Merge 3.19-rc5 into staging-next

We want the staging fixes in this branch as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 815de37..ce8f420 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -106,4 +106,6 @@
 
 source "drivers/staging/clocking-wizard/Kconfig"
 
+source "drivers/staging/fbtft/Kconfig"
+
 endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 33c640b..c242787 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -45,3 +45,4 @@
 obj-$(CONFIG_CRYPTO_SKEIN)	+= skein/
 obj-$(CONFIG_UNISYSSPAR)	+= unisys/
 obj-$(CONFIG_COMMON_CLK_XLNX_CLKWZRD)	+= clocking-wizard/
+obj-$(CONFIG_FB_TFT)		+= fbtft/
diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c
index 8c78527..d140b733 100644
--- a/drivers/staging/android/ashmem.c
+++ b/drivers/staging/android/ashmem.c
@@ -447,8 +447,8 @@
 		loff_t end = (range->pgend + 1) * PAGE_SIZE;
 
 		vfs_fallocate(range->asma->file,
-				FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
-				start, end - start);
+			      FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
+			      start, end - start);
 		range->purged = ASHMEM_WAS_PURGED;
 		lru_del(range);
 
@@ -549,7 +549,6 @@
 
 	mutex_lock(&ashmem_mutex);
 	if (asma->name[ASHMEM_NAME_PREFIX_LEN] != '\0') {
-
 		/*
 		 * Copying only `len', instead of ASHMEM_NAME_LEN, bytes
 		 * prevents us from revealing one user's stack to another.
@@ -751,10 +750,10 @@
 
 	switch (cmd) {
 	case ASHMEM_SET_NAME:
-		ret = set_name(asma, (void __user *) arg);
+		ret = set_name(asma, (void __user *)arg);
 		break;
 	case ASHMEM_GET_NAME:
-		ret = get_name(asma, (void __user *) arg);
+		ret = get_name(asma, (void __user *)arg);
 		break;
 	case ASHMEM_SET_SIZE:
 		ret = -EINVAL;
@@ -775,7 +774,7 @@
 	case ASHMEM_PIN:
 	case ASHMEM_UNPIN:
 	case ASHMEM_GET_PIN_STATUS:
-		ret = ashmem_pin_unpin(asma, cmd, (void __user *) arg);
+		ret = ashmem_pin_unpin(asma, cmd, (void __user *)arg);
 		break;
 	case ASHMEM_PURGE_ALL_CACHES:
 		ret = -EPERM;
@@ -798,7 +797,6 @@
 static long compat_ashmem_ioctl(struct file *file, unsigned int cmd,
 				unsigned long arg)
 {
-
 	switch (cmd) {
 	case COMPAT_ASHMEM_SET_SIZE:
 		cmd = ASHMEM_SET_SIZE;
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 296d347..b8f1c49 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1508,6 +1508,9 @@
 		pr_err("%s: can not add heap with invalid ops struct.\n",
 		       __func__);
 
+	spin_lock_init(&heap->free_lock);
+	heap->free_list_size = 0;
+
 	if (heap->flags & ION_HEAP_FLAG_DEFER_FREE)
 		ion_heap_init_deferred_free(heap);
 
diff --git a/drivers/staging/android/ion/ion_cma_heap.c b/drivers/staging/android/ion/ion_cma_heap.c
index f8cabcb..f4211f1 100644
--- a/drivers/staging/android/ion/ion_cma_heap.c
+++ b/drivers/staging/android/ion/ion_cma_heap.c
@@ -39,24 +39,6 @@
 	struct sg_table *table;
 };
 
-/*
- * Create scatter-list for the already allocated DMA buffer.
- * This function could be replaced by dma_common_get_sgtable
- * as soon as it will avalaible.
- */
-static int ion_cma_get_sgtable(struct device *dev, struct sg_table *sgt,
-			       void *cpu_addr, dma_addr_t handle, size_t size)
-{
-	struct page *page = virt_to_page(cpu_addr);
-	int ret;
-
-	ret = sg_alloc_table(sgt, 1, GFP_KERNEL);
-	if (unlikely(ret))
-		return ret;
-
-	sg_set_page(sgt->sgl, page, PAGE_ALIGN(size), 0);
-	return 0;
-}
 
 /* ION CMA heap operations functions */
 static int ion_cma_allocate(struct ion_heap *heap, struct ion_buffer *buffer,
@@ -91,7 +73,7 @@
 	if (!info->table)
 		goto free_mem;
 
-	if (ion_cma_get_sgtable
+	if (dma_common_get_sgtable
 	    (dev, info->table, info->cpu_addr, info->handle, len))
 		goto free_table;
 	/* keep this for memory release */
diff --git a/drivers/staging/android/ion/ion_heap.c b/drivers/staging/android/ion/ion_heap.c
index 4605e04..fd13d05 100644
--- a/drivers/staging/android/ion/ion_heap.c
+++ b/drivers/staging/android/ion/ion_heap.c
@@ -253,8 +253,6 @@
 	struct sched_param param = { .sched_priority = 0 };
 
 	INIT_LIST_HEAD(&heap->free_list);
-	heap->free_list_size = 0;
-	spin_lock_init(&heap->free_lock);
 	init_waitqueue_head(&heap->waitqueue);
 	heap->task = kthread_run(ion_heap_deferred_free, heap,
 				 "%s", heap->name);
diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c
index a673ffa..59ea1a7 100644
--- a/drivers/staging/android/logger.c
+++ b/drivers/staging/android/logger.c
@@ -63,7 +63,6 @@
 
 static LIST_HEAD(log_list);
 
-
 /**
  * struct logger_reader - a logging device open for reading
  * @log:	The associated log
@@ -89,7 +88,6 @@
 	return n & (log->size - 1);
 }
 
-
 /*
  * file_get_log - Given a file structure, return the associated log
  *
@@ -122,14 +120,15 @@
  * the log entry spans the end and beginning of the circular buffer.
  */
 static struct logger_entry *get_entry_header(struct logger_log *log,
-		size_t off, struct logger_entry *scratch)
+					     size_t off,
+					     struct logger_entry *scratch)
 {
 	size_t len = min(sizeof(struct logger_entry), log->size - off);
 
 	if (len != sizeof(struct logger_entry)) {
-		memcpy(((void *) scratch), log->buffer + off, len);
-		memcpy(((void *) scratch) + len, log->buffer,
-			sizeof(struct logger_entry) - len);
+		memcpy(((void *)scratch), log->buffer + off, len);
+		memcpy(((void *)scratch) + len, log->buffer,
+		       sizeof(struct logger_entry) - len);
 		return scratch;
 	}
 
@@ -163,7 +162,7 @@
 }
 
 static ssize_t copy_header_to_user(int ver, struct logger_entry *entry,
-					 char __user *buf)
+				   char __user *buf)
 {
 	void *hdr;
 	size_t hdr_len;
@@ -213,7 +212,7 @@
 	count -= get_user_hdr_len(reader->r_ver);
 	buf += get_user_hdr_len(reader->r_ver);
 	msg_start = logger_offset(log,
-		reader->r_off + sizeof(struct logger_entry));
+				  reader->r_off + sizeof(struct logger_entry));
 
 	/*
 	 * We read from the msg in two disjoint operations. First, we read from
@@ -243,7 +242,7 @@
  * 'log->buffer' which contains the first entry readable by 'euid'
  */
 static size_t get_next_entry_by_uid(struct logger_log *log,
-		size_t off, kuid_t euid)
+				    size_t off, kuid_t euid)
 {
 	while (off != log->w_off) {
 		struct logger_entry *entry;
@@ -530,8 +529,9 @@
 		mutex_unlock(&log->mutex);
 
 		file->private_data = reader;
-	} else
+	} else {
 		file->private_data = log;
+	}
 
 	return 0;
 }
@@ -611,7 +611,7 @@
 	struct logger_log *log = file_get_log(file);
 	struct logger_reader *reader;
 	long ret = -EINVAL;
-	void __user *argp = (void __user *) arg;
+	void __user *argp = (void __user *)arg;
 
 	mutex_lock(&log->mutex);
 
@@ -653,7 +653,7 @@
 			break;
 		}
 		if (!(in_egroup_p(file_inode(file)->i_gid) ||
-				capable(CAP_SYSLOG))) {
+		      capable(CAP_SYSLOG))) {
 			ret = -EPERM;
 			break;
 		}
@@ -741,12 +741,12 @@
 	ret = misc_register(&log->misc);
 	if (unlikely(ret)) {
 		pr_err("failed to register misc device for log '%s'!\n",
-				log->misc.name);
+		       log->misc.name);
 		goto out_free_misc_name;
 	}
 
 	pr_info("created %luK log '%s'\n",
-		(unsigned long) log->size >> 10, log->misc.name);
+		(unsigned long)log->size >> 10, log->misc.name);
 
 	return 0;
 
@@ -799,7 +799,6 @@
 	}
 }
 
-
 device_initcall(logger_init);
 module_exit(logger_exit);
 
diff --git a/drivers/staging/android/sync_debug.c b/drivers/staging/android/sync_debug.c
index 1532a86..91ed2c4 100644
--- a/drivers/staging/android/sync_debug.c
+++ b/drivers/staging/android/sync_debug.c
@@ -96,7 +96,8 @@
 		   sync_status_str(status));
 
 	if (status <= 0) {
-		struct timespec64 ts64 = ktime_to_timespec64(pt->base.timestamp);
+		struct timespec64 ts64 =
+			ktime_to_timespec64(pt->base.timestamp);
 
 		seq_printf(s, "@%lld.%09ld", (s64)ts64.tv_sec, ts64.tv_nsec);
 	}
diff --git a/drivers/staging/board/board.c b/drivers/staging/board/board.c
index 6050fbd..d5a6abc 100644
--- a/drivers/staging/board/board.c
+++ b/drivers/staging/board/board.c
@@ -11,8 +11,7 @@
 	struct resource res;
 
 	while (dn) {
-		if (of_can_translate_address(dn)
-		    && !of_address_to_resource(dn, 0, &res)) {
+		if (!of_address_to_resource(dn, 0, &res)) {
 			if (res.start == base_address) {
 				of_node_put(dn);
 				return true;
diff --git a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
index 471d0877..5455bf3 100644
--- a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
+++ b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
@@ -91,8 +91,10 @@
 
 	if (ndata->clk == clk_wzrd->clk_in1)
 		max = clk_wzrd_max_freq[clk_wzrd->speed_grade - 1];
-	if (ndata->clk == clk_wzrd->axi_clk)
+	else if (ndata->clk == clk_wzrd->axi_clk)
 		max = WZRD_ACLK_MAX_FREQ;
+	else
+		return NOTIFY_DONE;	/* should never happen */
 
 	switch (event) {
 	case PRE_RATE_CHANGE:
@@ -239,6 +241,7 @@
 	/* register div per output */
 	for (i = WZRD_NUM_OUTPUTS - 1; i >= 0 ; i--) {
 		const char *clkout_name;
+
 		if (of_property_read_string_index(np, "clock-output-names", i,
 						  &clkout_name)) {
 			dev_err(&pdev->dev,
diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
index a8201fe..593fcb1 100644
--- a/drivers/staging/comedi/Kconfig
+++ b/drivers/staging/comedi/Kconfig
@@ -168,7 +168,7 @@
 
 config COMEDI_PCL812
 	tristate "Advantech PCL-812/813 and ADlink ACL-8112/8113/8113/8216"
-	depends on VIRT_TO_BUS && ISA_DMA_API
+	select COMEDI_ISADMA if ISA_DMA_API
 	---help---
 	  Enable support for Advantech PCL-812/PG, PCL-813/B, ADLink
 	  ACL-8112DG/HG/PG, ACL-8113, ACL-8216, ICP DAS A-821PGH/PGL/PGL-NDA,
@@ -179,7 +179,7 @@
 
 config COMEDI_PCL816
 	tristate "Advantech PCL-814 and PCL-816 ISA card support"
-	depends on VIRT_TO_BUS && ISA_DMA_API
+	select COMEDI_ISADMA if ISA_DMA_API
 	---help---
 	  Enable support for Advantech PCL-814 and PCL-816 ISA cards
 
@@ -188,7 +188,7 @@
 
 config COMEDI_PCL818
 	tristate "Advantech PCL-718 and PCL-818 ISA card support"
-	depends on VIRT_TO_BUS && ISA_DMA_API
+	select COMEDI_ISADMA if ISA_DMA_API
 	---help---
 	  Enable support for Advantech PCL-818 ISA cards
 	  PCL-818L, PCL-818H, PCL-818HD, PCL-818HG, PCL-818 and PCL-718
@@ -281,7 +281,7 @@
 
 config COMEDI_DAS16
 	tristate "DAS-16 compatible ISA and PC/104 card support"
-	depends on ISA_DMA_API
+	select COMEDI_ISADMA if ISA_DMA_API
 	select COMEDI_8255
 	---help---
 	  Enable support for Keithley Metrabyte/ComputerBoards DAS16
@@ -309,7 +309,7 @@
 
 config COMEDI_DAS1800
 	tristate "DAS1800 and compatible ISA card support"
-	depends on VIRT_TO_BUS && ISA_DMA_API
+	select COMEDI_ISADMA if ISA_DMA_API
 	---help---
 	  Enable support for DAS1800 and compatible ISA cards
 	  Keithley Metrabyte DAS-1701ST, DAS-1701ST-DA, DAS-1701/AO,
@@ -372,7 +372,7 @@
 
 config COMEDI_DT282X
 	tristate "Data Translation DT2821 series and DT-EZ ISA card support"
-	depends on VIRT_TO_BUS && ISA_DMA_API
+	select COMEDI_ISADMA if ISA_DMA_API
 	---help---
 	  Enable support for Data Translation DT2821 series including DT-EZ
 	  DT2821, DT2821-F-16SE, DT2821-F-8DI, DT2821-G-16SE, DT2821-G-8DI,
@@ -462,7 +462,7 @@
 
 config COMEDI_NI_AT_A2150
 	tristate "NI AT-A2150 ISA card support"
-	depends on VIRT_TO_BUS && ISA_DMA_API
+	select COMEDI_ISADMA if ISA_DMA_API
 	---help---
 	  Enable support for National Instruments AT-A2150 cards
 
@@ -502,7 +502,7 @@
 config COMEDI_NI_LABPC_ISA
 	tristate "NI Lab-PC and compatibles ISA support"
 	select COMEDI_NI_LABPC
-	select COMEDI_NI_LABPC_ISADMA if ISA_DMA_API && VIRT_TO_BUS
+	select COMEDI_NI_LABPC_ISADMA if ISA_DMA_API
 	---help---
 	  Enable support for National Instruments Lab-PC and compatibles
 	  Lab-PC-1200, Lab-PC-1200AI, Lab-PC+.
@@ -724,7 +724,6 @@
 config COMEDI_ADL_PCI9118
 	tristate "ADLink PCI-9118DG, PCI-9118HG, PCI-9118HR support"
 	depends on HAS_DMA
-	depends on VIRT_TO_BUS
 	---help---
 	  Enable support for ADlink PCI-9118DG, PCI-9118HG, PCI-9118HR cards
 
@@ -1263,12 +1262,16 @@
 	tristate
 	select COMEDI_8255
 
+config COMEDI_ISADMA
+	tristate
+
 config COMEDI_NI_LABPC
 	tristate
 	select COMEDI_8255
 
 config COMEDI_NI_LABPC_ISADMA
 	tristate
+	select COMEDI_ISADMA
 
 config COMEDI_NI_TIO
 	tristate
diff --git a/drivers/staging/comedi/drivers/8255_pci.c b/drivers/staging/comedi/drivers/8255_pci.c
index 8b95898..9847642 100644
--- a/drivers/staging/comedi/drivers/8255_pci.c
+++ b/drivers/staging/comedi/drivers/8255_pci.c
@@ -22,33 +22,44 @@
  */
 
 /*
-Driver: 8255_pci
-Description: Generic PCI based 8255 Digital I/O boards
-Devices: (ADLink) PCI-7224 [adl_pci-7224] - 24 channels
-	 (ADLink) PCI-7248 [adl_pci-7248] - 48 channels
-	 (ADLink) PCI-7296 [adl_pci-7296] - 96 channels
-	 (Measurement Computing) PCI-DIO24 [cb_pci-dio24] - 24 channels
-	 (Measurement Computing) PCI-DIO24H [cb_pci-dio24h] - 24 channels
-	 (Measurement Computing) PCI-DIO48H [cb_pci-dio48h] - 48 channels
-	 (Measurement Computing) PCI-DIO96H [cb_pci-dio96h] - 96 channels
-	 (National Instruments) PCI-DIO-96 [ni_pci-dio-96] - 96 channels
-	 (National Instruments) PCI-DIO-96B [ni_pci-dio-96b] - 96 channels
-	 (National Instruments) PXI-6508 [ni_pxi-6508] - 96 channels
-	 (National Instruments) PCI-6503 [ni_pci-6503] - 24 channels
-	 (National Instruments) PCI-6503B [ni_pci-6503b] - 24 channels
-	 (National Instruments) PCI-6503X [ni_pci-6503x] - 24 channels
-	 (National Instruments) PXI-6503 [ni_pxi-6503] - 24 channels
-Author: H Hartley Sweeten <hsweeten@visionengravers.com>
-Updated: Wed, 12 Sep 2012 11:52:01 -0700
-Status: untested
-
-Some of these boards also have an 8254 programmable timer/counter
-chip. This chip is not currently supported by this driver.
-
-Interrupt support for these boards is also not currently supported.
-
-Configuration Options: not applicable, uses PCI auto config
-*/
+ * Driver: 8255_pci
+ * Description: Generic PCI based 8255 Digital I/O boards
+ * Devices: [ADLink] PCI-7224 (adl_pci-7224), PCI-7248 (adl_pci-7248),
+ *   PCI-7296 (adl_pci-7296),
+ *   [Measurement Computing] PCI-DIO24 (cb_pci-dio24),
+ *   PCI-DIO24H (cb_pci-dio24h), PCI-DIO48H (cb_pci-dio48h),
+ *   PCI-DIO96H (cb_pci-dio96h),
+ *   [National Instruments] PCI-DIO-96 (ni_pci-dio-96),
+ *   PCI-DIO-96B (ni_pci-dio-96b), PXI-6508 (ni_pxi-6508),
+ *   PCI-6503 (ni_pci-6503), PCI-6503B (ni_pci-6503b),
+ *   PCI-6503X (ni_pci-6503x), PXI-6503 (ni_pxi-6503)
+ * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
+ * Updated: Wed, 12 Sep 2012 11:52:01 -0700
+ * Status: untested
+ *
+ * These boards have one or more 8255 digital I/O chips, each of which
+ * is supported as a separate 24-channel DIO subdevice.
+ *
+ * Boards with 24 DIO channels (1 DIO subdevice):
+ *
+ *   PCI-7224, PCI-DIO24, PCI-DIO24H, PCI-6503, PCI-6503B, PCI-6503X,
+ *   PXI-6503
+ *
+ * Boards with 48 DIO channels (2 DIO subdevices):
+ *
+ *   PCI-7248, PCI-DIO48H
+ *
+ * Boards with 96 DIO channels (4 DIO subdevices):
+ *
+ *   PCI-7296, PCI-DIO96H, PCI-DIO-96, PCI-DIO-96B, PXI-6508
+ *
+ * Some of these boards also have an 8254 programmable timer/counter
+ * chip.  This chip is not currently supported by this driver.
+ *
+ * Interrupt support for these boards is also not currently supported.
+ *
+ * Configuration Options: not applicable, uses PCI auto config.
+ */
 
 #include <linux/module.h>
 #include <linux/pci.h>
diff --git a/drivers/staging/comedi/drivers/Makefile b/drivers/staging/comedi/drivers/Makefile
index 84fdf20..7d1fbd5 100644
--- a/drivers/staging/comedi/drivers/Makefile
+++ b/drivers/staging/comedi/drivers/Makefile
@@ -3,6 +3,7 @@
 ccflags-$(CONFIG_COMEDI_DEBUG)		:= -DDEBUG
 
 # Comedi "helper" modules
+obj-$(CONFIG_COMEDI_ISADMA)		+= comedi_isadma.o
 
 # Comedi misc drivers
 obj-$(CONFIG_COMEDI_BOND)		+= comedi_bond.o
diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c
index bfa9228..5bf943d 100644
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1500.c
@@ -21,17 +21,11 @@
  *
  */
 
-/* Card Specific information */
-#define APCI1500_ADDRESS_RANGE		4
-
 /* DIGITAL INPUT-OUTPUT DEFINE */
 
-#define APCI1500_DIGITAL_OP		2
-#define APCI1500_DIGITAL_IP		0
 #define APCI1500_AND			2
 #define APCI1500_OR			4
 #define APCI1500_OR_PRIORITY		6
-#define APCI1500_CLK_SELECT		0
 #define COUNTER1			0
 #define COUNTER2			1
 #define COUNTER3			2
@@ -51,16 +45,6 @@
 #define TRIGGER				2
 
 /*
- * Zillog I/O enumeration
- */
-enum {
-	APCI1500_Z8536_PORT_C,
-	APCI1500_Z8536_PORT_B,
-	APCI1500_Z8536_PORT_A,
-	APCI1500_Z8536_CONTROL_REGISTER
-};
-
-/*
  * Z8536 CIO Internal Address
  */
 enum {
@@ -129,6 +113,99 @@
 static int i_TimerCounter1Enabled, i_TimerCounter2Enabled,
 	   i_WatchdogCounter3Enabled;
 
+static unsigned int z8536_read(struct comedi_device *dev, unsigned int reg)
+{
+	unsigned long flags;
+	unsigned int val;
+
+	spin_lock_irqsave(&dev->spinlock, flags);
+	outb(reg, dev->iobase + APCI1500_Z8536_CTRL_REG);
+	val = inb(dev->iobase + APCI1500_Z8536_CTRL_REG);
+	spin_unlock_irqrestore(&dev->spinlock, flags);
+
+	return val;
+}
+
+static void z8536_write(struct comedi_device *dev,
+			unsigned int val, unsigned int reg)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->spinlock, flags);
+	outb(reg, dev->iobase + APCI1500_Z8536_CTRL_REG);
+	outb(val, dev->iobase + APCI1500_Z8536_CTRL_REG);
+	spin_unlock_irqrestore(&dev->spinlock, flags);
+}
+
+static void z8536_reset(struct comedi_device *dev)
+{
+	unsigned long flags;
+
+	/*
+	 * Even if the state of the Z8536 is not known, the following
+	 * sequence will reset it and put it in State 0.
+	 */
+	spin_lock_irqsave(&dev->spinlock, flags);
+	inb(dev->iobase + APCI1500_Z8536_CTRL_REG);
+	outb(0, dev->iobase + APCI1500_Z8536_CTRL_REG);
+	inb(dev->iobase + APCI1500_Z8536_CTRL_REG);
+	outb(0, dev->iobase + APCI1500_Z8536_CTRL_REG);
+	outb(1, dev->iobase + APCI1500_Z8536_CTRL_REG);
+	outb(0, dev->iobase + APCI1500_Z8536_CTRL_REG);
+	spin_unlock_irqrestore(&dev->spinlock, flags);
+
+	z8536_write(dev, 0xf4, APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
+
+	z8536_write(dev, 0x10, APCI1500_RW_PORT_A_SPECIFICATION);
+	/* High level of port A means 1 */
+	z8536_write(dev, 0xff, APCI1500_RW_PORT_A_DATA_PCITCH_POLARITY);
+	/* All bits used as inputs */
+	z8536_write(dev, 0xff, APCI1500_RW_PORT_A_DATA_DIRECTION);
+	/* Deletes IP and IUS */
+	z8536_write(dev, 0x20, APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
+	/* Deactivates the interrupt management of port A */
+	z8536_write(dev, 0xe0, APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
+	/* Deletes the register */
+	z8536_write(dev, 0x00, APCI1500_RW_PORT_A_HANDSHAKE_SPECIFICATION);
+
+	z8536_write(dev, 0x10, APCI1500_RW_PORT_B_SPECIFICATION);
+	/* A high level of port B means 1 */
+	z8536_write(dev, 0x7f, APCI1500_RW_PORT_B_DATA_PCITCH_POLARITY);
+	/* All bits used as inputs */
+	z8536_write(dev, 0xff, APCI1500_RW_PORT_B_DATA_DIRECTION);
+	/* Deletes IP and IUS */
+	z8536_write(dev, 0x20, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
+	/* Deactivates the interrupt management of port B */
+	z8536_write(dev, 0xe0, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
+	/* Deletes the register */
+	z8536_write(dev, 0x00, APCI1500_RW_PORT_B_HANDSHAKE_SPECIFICATION);
+
+	/* High level of port C means 1 */
+	z8536_write(dev, 0x09, APCI1500_RW_PORT_C_DATA_PCITCH_POLARITY);
+	/* All bits used as inputs except channel 1 */
+	z8536_write(dev, 0x0e, APCI1500_RW_PORT_C_DATA_DIRECTION);
+	/* Deletes it */
+	z8536_write(dev, 0x00, APCI1500_RW_PORT_C_SPECIAL_IO_CONTROL);
+
+	/* Deletes IP and IUS */
+	z8536_write(dev, 0x20, APCI1500_RW_CPT_TMR1_CMD_STATUS);
+	/* Deactivates the interrupt management of timer 1 */
+	z8536_write(dev, 0xe0, APCI1500_RW_CPT_TMR1_CMD_STATUS);
+
+	/* Deletes IP and IUS */
+	z8536_write(dev, 0x20, APCI1500_RW_CPT_TMR2_CMD_STATUS);
+	/* Deactivates Timer 2 interrupt management */
+	z8536_write(dev, 0xe0, APCI1500_RW_CPT_TMR2_CMD_STATUS);
+
+	/* Deletes IP and IUS */
+	z8536_write(dev, 0x20, APCI1500_RW_CPT_TMR3_CMD_STATUS);
+	/* Deactivates interrupt management of timer 3 */
+	z8536_write(dev, 0xe0, APCI1500_RW_CPT_TMR3_CMD_STATUS);
+
+	/* Deletes all interrupts */
+	z8536_write(dev, 0x00, APCI1500_RW_MASTER_INTERRUPT_CONTROL);
+}
+
 /*
  * An event can be generated for each port. The first event is related to the
  * first 8 channels (port 1) and the second to the following 6 channels (port 2)
@@ -158,17 +235,13 @@
 			      struct comedi_insn *insn,
 			      unsigned int *data)
 {
-	struct apci1500_private *devpriv = dev->private;
 	int i_PatternPolarity = 0, i_PatternTransition = 0, i_PatternMask = 0;
 	int i_MaxChannel = 0, i_Count = 0, i_EventMask = 0;
 	int i_PatternTransitionCount = 0, i_RegValue;
 	int i;
 
-	/* Selects the master interrupt control register */
-	outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Disables  the main interrupt on the board */
-	outb(0x00, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	/* Disables the main interrupt on the board */
+	z8536_write(dev, 0x00, APCI1500_RW_MASTER_INTERRUPT_CONTROL);
 
 	if (data[0] == 1) {
 		i_MaxChannel = 8;
@@ -278,73 +351,29 @@
 				}
 			}
 
-			/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-			outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
 			/* Disable Port A */
-			outb(0xF0,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Selects the polarity register of port 1    */
-			outb(APCI1500_RW_PORT_A_PATTERN_POLARITY,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_PatternPolarity,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, 0xf0,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 
-			/* Selects the pattern mask register of      */
-			/* port 1                                    */
-			outb(APCI1500_RW_PORT_A_PATTERN_MASK,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_PatternMask,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Selects the pattern transition register  */
-			/* of port 1                                */
-			outb(APCI1500_RW_PORT_A_PATTERN_TRANSITION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_PatternTransition,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-
-			/* Selects the mode specification mask    */
-			/* register of port 1                     */
-			outb(APCI1500_RW_PORT_A_SPECIFICATION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			i_RegValue =
-				inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-
-			/* Selects the mode specification mask    */
-			/* register of port 1                     */
-			outb(APCI1500_RW_PORT_A_SPECIFICATION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, i_PatternPolarity,
+				    APCI1500_RW_PORT_A_PATTERN_POLARITY);
+			z8536_write(dev, i_PatternMask,
+				    APCI1500_RW_PORT_A_PATTERN_MASK);
+			z8536_write(dev, i_PatternTransition,
+				    APCI1500_RW_PORT_A_PATTERN_TRANSITION);
 
 			/* Port A new mode    */
-
+			i_RegValue = z8536_read(dev,
+					APCI1500_RW_PORT_A_SPECIFICATION);
 			i_RegValue = (i_RegValue & 0xF9) | data[1] | 0x9;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, i_RegValue,
+				    APCI1500_RW_PORT_A_SPECIFICATION);
 
 			i_Event1Status = 1;
 
-			/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-
-			outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
 			/* Enable Port A */
-			outb(0xF4,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-
+			z8536_write(dev, 0xf4,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 		} else {
 			dev_warn(dev->class_dev,
 				"The choice for interrupt logic does not exist\n");
@@ -358,93 +387,39 @@
 		/* Test the event logic */
 
 		if (data[1] == APCI1500_OR) {
-			/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-			outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
 			/* Disable Port B */
-			outb(0x74,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Selects the mode specification mask  */
-			/* register of port B                   */
-			outb(APCI1500_RW_PORT_B_SPECIFICATION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			i_RegValue =
-				inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, 0x74,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 
-			/* Selects the mode specification mask    */
-			/* register of port B                     */
-			outb(APCI1500_RW_PORT_B_SPECIFICATION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			i_RegValue = z8536_read(dev,
+					APCI1500_RW_PORT_B_SPECIFICATION);
 			i_RegValue = i_RegValue & 0xF9;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, i_RegValue,
+				    APCI1500_RW_PORT_B_SPECIFICATION);
 
 			/* Selects error channels 1 and 2 */
-
 			i_PatternMask = (i_PatternMask | 0xC0);
 			i_PatternPolarity = (i_PatternPolarity | 0xC0);
 			i_PatternTransition = (i_PatternTransition | 0xC0);
 
-			/* Selects the polarity register of port 2    */
-			outb(APCI1500_RW_PORT_B_PATTERN_POLARITY,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_PatternPolarity,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Selects the pattern transition register    */
-			/* of port 2                                  */
-			outb(APCI1500_RW_PORT_B_PATTERN_TRANSITION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_PatternTransition,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Selects the pattern Mask register    */
-			/* of port 2                                  */
+			z8536_write(dev, i_PatternPolarity,
+				    APCI1500_RW_PORT_B_PATTERN_POLARITY);
+			z8536_write(dev, i_PatternTransition,
+				    APCI1500_RW_PORT_B_PATTERN_TRANSITION);
+			z8536_write(dev, i_PatternMask,
+				    APCI1500_RW_PORT_B_PATTERN_MASK);
 
-			outb(APCI1500_RW_PORT_B_PATTERN_MASK,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_PatternMask,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-
-			/* Selects the mode specification mask    */
-			/* register of port 2                     */
-			outb(APCI1500_RW_PORT_B_SPECIFICATION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			i_RegValue =
-				inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Selects the mode specification mask    */
-			/* register of port 2                     */
-			outb(APCI1500_RW_PORT_B_SPECIFICATION,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			i_RegValue = z8536_read(dev,
+					APCI1500_RW_PORT_B_SPECIFICATION);
 			i_RegValue = (i_RegValue & 0xF9) | 4;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, i_RegValue,
+				    APCI1500_RW_PORT_B_SPECIFICATION);
 
 			i_Event2Status = 1;
-			/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
 
-			outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
 			/* Enable Port B */
-
-			outb(0xF4,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, 0xf4,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 		} else {
 			dev_warn(dev->class_dev,
 				"The choice for interrupt logic does not exist\n");
@@ -466,7 +441,6 @@
 			     struct comedi_insn *insn,
 			     unsigned int *data)
 {
-	struct apci1500_private *devpriv = dev->private;
 	int i_Event1InterruptStatus = 0, i_Event2InterruptStatus =
 		0, i_RegValue;
 
@@ -480,40 +454,24 @@
 			if (data[1] == 1) {
 				/* Test if event initialised */
 				if (i_Event1Status == 1) {
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 					/* Disable Port A */
-					outb(0xF0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the command and status register of      */
-					/* port 1                                          */
-					outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xf0,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 					/* Allows the pattern interrupt      */
-					outb(0xC0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xc0,
+					    APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
 					/* Enable Port A */
-					outb(0xF4,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xf4,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
+
 					i_Event1InterruptStatus = 1;
-					outb(APCI1500_RW_PORT_A_SPECIFICATION,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					i_RegValue =
-						inb(devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
 
-					/* Selects the master interrupt control register */
-					outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					i_RegValue = z8536_read(dev,
+					    APCI1500_RW_PORT_A_SPECIFICATION);
+
 					/* Authorizes the main interrupt on the board */
-					outb(0xD0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-
+					z8536_write(dev, 0xd0,
+					    APCI1500_RW_MASTER_INTERRUPT_CONTROL);
 				} else {
 					dev_warn(dev->class_dev,
 						"Event 1 not initialised\n");
@@ -523,32 +481,20 @@
 			if (data[1] == 2) {
 
 				if (i_Event2Status == 1) {
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 					/* Disable Port B */
-					outb(0x74,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the command and status register of      */
-					/* port 2                                          */
-					outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0x74,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 					/* Allows the pattern interrupt      */
-					outb(0xC0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xc0,
+					    APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
 					/* Enable Port B */
-					outb(0xF4,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xf4,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 
-					/* Selects the master interrupt control register */
-					outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 					/* Authorizes the main interrupt on the board */
-					outb(0xD0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xd0,
+					    APCI1500_RW_MASTER_INTERRUPT_CONTROL);
+
 					i_Event2InterruptStatus = 1;
 				} else {
 					dev_warn(dev->class_dev,
@@ -573,25 +519,16 @@
 			if (data[1] == 1) {
 				/* Test if event initialised */
 				if (i_Event1Status == 1) {
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 					/* Disable Port A */
-					outb(0xF0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the command and status register of      */
-					/* port 1                                          */
-					outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-					/* Inhibits the pattern interrupt      */
-					outb(0xE0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xf0,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
+					/* Inhibits the pattern interrupt */
+					z8536_write(dev, 0xe0,
+					    APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
 					/* Enable Port A */
-					outb(0xF4,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xf4,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
+
 					i_Event1InterruptStatus = 0;
 				} else {
 					dev_warn(dev->class_dev,
@@ -602,25 +539,16 @@
 			if (data[1] == 2) {
 				/* Test if event initialised */
 				if (i_Event2Status == 1) {
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 					/* Disable Port B */
-					outb(0x74,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the command and status register of      */
-					/* port 2                                         */
-					outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0x74,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 					/* Inhibits the pattern interrupt      */
-					outb(0xE0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					/* Selects the APCI1500_RW_MASTER_CONFIGURATION_CONTROL register */
-					outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xe0,
+					    APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
 					/* Enable Port B */
-					outb(0xF4,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0xf4,
+					    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
+
 					i_Event2InterruptStatus = 0;
 				} else {
 
@@ -653,134 +581,9 @@
 			    struct comedi_insn *insn,
 			    unsigned int *data)
 {
-	struct apci1500_private *devpriv = dev->private;
-	int i_DummyRead = 0;
-
 	/* Software reset */
-	i_DummyRead = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_DummyRead = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(1, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_reset(dev);
 
-	/* Selects the master configuration control register */
-	outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0xF4, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the mode specification register of port A */
-	outb(APCI1500_RW_PORT_A_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0x10, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the data path polarity register of port A */
-	outb(APCI1500_RW_PORT_A_DATA_PCITCH_POLARITY,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* High level of port A means 1 */
-	outb(0xFF, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the data direction register of port A */
-	outb(APCI1500_RW_PORT_A_DATA_DIRECTION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* All bits used as inputs */
-	outb(0xFF, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port A */
-	outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/*  Selects the command and status register of port A */
-	outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates the interrupt management of port A:  */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the handshake specification register of port A */
-	outb(APCI1500_RW_PORT_A_HANDSHAKE_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes the register */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the mode specification register of port B */
-	outb(APCI1500_RW_PORT_B_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0x10, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the data path polarity register of port B */
-	outb(APCI1500_RW_PORT_B_DATA_PCITCH_POLARITY,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* A high level of port B means 1 */
-	outb(0x7F, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the data direction register of port B */
-	outb(APCI1500_RW_PORT_B_DATA_DIRECTION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* All bits used as inputs */
-	outb(0xFF, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port B */
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port B */
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates the interrupt management of port B:         */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the handshake specification register of port B */
-	outb(APCI1500_RW_PORT_B_HANDSHAKE_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes the register */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the data path polarity register of port C */
-	outb(APCI1500_RW_PORT_C_DATA_PCITCH_POLARITY,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* High level of port C means 1 */
-	outb(0x9, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the data direction register of port C */
-	outb(APCI1500_RW_PORT_C_DATA_DIRECTION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* All bits used as inputs except channel 1 */
-	outb(0x0E, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the special IO register of port C */
-	outb(APCI1500_RW_PORT_C_SPECIAL_IO_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes it */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 1 */
-	outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 1 */
-	outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates the interrupt management of timer 1         */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 2 */
-	outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 2 */
-	outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates Timer 2 interrupt management:               */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 3 */
-	outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of Timer 3 */
-	outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates interrupt management of timer 3:            */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the master interrupt control register */
-	outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes all interrupts */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	return insn->n;
 }
 
@@ -791,7 +594,7 @@
 {
 	struct apci1500_private *devpriv = dev->private;
 
-	data[1] = inw(devpriv->i_IobaseAddon + APCI1500_DIGITAL_IP);
+	data[1] = inw(devpriv->addon + APCI1500_DI_REG);
 
 	return insn->n;
 }
@@ -832,8 +635,7 @@
 	if (data[3] == 0) {
 		if (data[1] == 0) {
 			data[0] = (data[0] << ui_NoOfChannel) | ui_Temp;
-			outw(data[0],
-				devpriv->i_IobaseAddon + APCI1500_DIGITAL_OP);
+			outw(data[0], devpriv->addon + APCI1500_DO_REG);
 		} else {
 			if (data[1] == 1) {
 				switch (ui_NoOfChannel) {
@@ -867,9 +669,7 @@
 
 				}
 
-				outw(data[0],
-					devpriv->i_IobaseAddon +
-					APCI1500_DIGITAL_OP);
+				outw(data[0], devpriv->addon + APCI1500_DO_REG);
 			} else {
 				dev_warn(dev->class_dev,
 					"Specified channel not supported\n");
@@ -887,9 +687,7 @@
 					(data[0] << ui_NoOfChannel) ^
 					0xffffffff;
 				data[0] = data[0] & ui_Temp;
-				outw(data[0],
-					devpriv->i_IobaseAddon +
-					APCI1500_DIGITAL_OP);
+				outw(data[0], devpriv->addon + APCI1500_DO_REG);
 			} else {
 				if (data[1] == 1) {
 					switch (ui_NoOfChannel) {
@@ -944,8 +742,7 @@
 					}
 
 					outw(data[0],
-						devpriv->i_IobaseAddon +
-						APCI1500_DIGITAL_OP);
+					     devpriv->addon + APCI1500_DO_REG);
 				} else {
 					dev_warn(dev->class_dev,
 						"Specified channel not supported\n");
@@ -988,7 +785,7 @@
 
 	/* Selection of the input clock */
 	if (data[0] == 0 || data[0] == 1 || data[0] == 2) {
-		outw(data[0], devpriv->i_IobaseAddon + APCI1500_CLK_SELECT);
+		outw(data[0], devpriv->addon + APCI1500_CLK_SEL_REG);
 	} else {
 		if (data[0] != 3) {
 			dev_warn(dev->class_dev,
@@ -1031,91 +828,34 @@
 		/* Test the reload value */
 
 		if ((data[3] >= 0) && (data[3] <= 65535)) {
-			if (data[7] == APCI1500_ENABLE
-				|| data[7] == APCI1500_DISABLE) {
-
-				/* Selects the mode register of timer/counter 1 */
-				outb(APCI1500_RW_CPT_TMR1_MODE_SPECIFICATION,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+			if (data[7] == APCI1500_ENABLE ||
+			    data[7] == APCI1500_DISABLE) {
 				/* Writes the new mode */
-				outb(i_TimerCounterMode,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_TimerCounterMode,
+				    APCI1500_RW_CPT_TMR1_MODE_SPECIFICATION);
 
-				/* Selects the constant register of timer/counter 1 */
-
-				outb(APCI1500_RW_CPT_TMR1_TIME_CST_LOW,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Writes the low value  */
-
-				outb(data[3],
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Selects the constant register of timer/counter 1 */
-
-				outb(APCI1500_RW_CPT_TMR1_TIME_CST_HIGH,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
+				/* Writes the low value */
+				z8536_write(dev, data[3],
+					    APCI1500_RW_CPT_TMR1_TIME_CST_LOW);
 				/* Writes the high value  */
-
 				data[3] = data[3] >> 8;
-				outb(data[3],
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Selects the master configuration register */
-
-				outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Reads the register */
-
-				i_MasterConfiguration =
-					inb(devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, data[3],
+					    APCI1500_RW_CPT_TMR1_TIME_CST_HIGH);
 
 				/* Enables timer/counter 1 and triggers timer/counter 1 */
-
+				i_MasterConfiguration = z8536_read(dev,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 				i_MasterConfiguration =
 					i_MasterConfiguration | 0x40;
-
-				/* Selects the master configuration register */
-				outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Writes the new configuration */
-				outb(i_MasterConfiguration,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				/* Selects the commands register of     */
-				/* timer/counter 1                      */
-
-				outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_MasterConfiguration,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 
 				/* Disable timer/counter 1 */
-
-				outb(0x0,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				/* Selects the commands register of     */
-				/* timer/counter 1                      */
-				outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
+				z8536_write(dev, 0x00,
+					    APCI1500_RW_CPT_TMR1_CMD_STATUS);
 				/* Trigger timer/counter 1 */
-				outb(0x2,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, 0x02,
+					    APCI1500_RW_CPT_TMR1_CMD_STATUS);
 			} else {
 				dev_warn(dev->class_dev,
 					"Error in selection of interrupt enable or disable\n");
@@ -1191,91 +931,34 @@
 		/* Test the reload value */
 
 		if ((data[3] >= 0) && (data[3] <= 65535)) {
-			if (data[7] == APCI1500_ENABLE
-				|| data[7] == APCI1500_DISABLE) {
-
-				/* Selects the mode register of timer/counter 2 */
-				outb(APCI1500_RW_CPT_TMR2_MODE_SPECIFICATION,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+			if (data[7] == APCI1500_ENABLE ||
+			    data[7] == APCI1500_DISABLE) {
 				/* Writes the new mode */
-				outb(i_TimerCounterMode,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_TimerCounterMode,
+				    APCI1500_RW_CPT_TMR2_MODE_SPECIFICATION);
 
-				/* Selects the constant register of timer/counter 2 */
-
-				outb(APCI1500_RW_CPT_TMR2_TIME_CST_LOW,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Writes the low value  */
-
-				outb(data[3],
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Selects the constant register of timer/counter 2 */
-
-				outb(APCI1500_RW_CPT_TMR2_TIME_CST_HIGH,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Writes the high value  */
-
+				/* Writes the low value */
+				z8536_write(dev, data[3],
+					    APCI1500_RW_CPT_TMR2_TIME_CST_LOW);
+				/* Writes the high value */
 				data[3] = data[3] >> 8;
-				outb(data[3],
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Selects the master configuration register */
-
-				outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Reads the register */
-
-				i_MasterConfiguration =
-					inb(devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, data[3],
+					    APCI1500_RW_CPT_TMR2_TIME_CST_HIGH);
 
 				/* Enables timer/counter 2 and triggers timer/counter 2 */
-
+				i_MasterConfiguration = z8536_read(dev,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 				i_MasterConfiguration =
 					i_MasterConfiguration | 0x20;
-
-				/* Selects the master configuration register */
-				outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Writes the new configuration */
-				outb(i_MasterConfiguration,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				/* Selects the commands register of     */
-				/* timer/counter 2                      */
-
-				outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_MasterConfiguration,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 
 				/* Disable timer/counter 2 */
-
-				outb(0x0,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				/* Selects the commands register of     */
-				/* timer/counter 2                      */
-				outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
+				z8536_write(dev, 0x00,
+					    APCI1500_RW_CPT_TMR2_CMD_STATUS);
 				/* Trigger timer/counter 1 */
-				outb(0x2,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, 0x02,
+					    APCI1500_RW_CPT_TMR2_CMD_STATUS);
 			} else {
 				dev_warn(dev->class_dev,
 					"Error in selection of interrupt enable or disable\n");
@@ -1345,94 +1028,36 @@
 		/* Test the reload value */
 
 		if ((data[3] >= 0) && (data[3] <= 65535)) {
-			if (data[7] == APCI1500_ENABLE
-				|| data[7] == APCI1500_DISABLE) {
-
-				/* Selects the mode register of watchdog/counter 3 */
-				outb(APCI1500_RW_CPT_TMR3_MODE_SPECIFICATION,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+			if (data[7] == APCI1500_ENABLE ||
+			    data[7] == APCI1500_DISABLE) {
 				/* Writes the new mode */
-				outb(i_TimerCounterMode,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Selects the constant register of watchdog/counter 3 */
-
-				outb(APCI1500_RW_CPT_TMR3_TIME_CST_LOW,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_TimerCounterMode,
+				    APCI1500_RW_CPT_TMR3_MODE_SPECIFICATION);
 
 				/* Writes the low value  */
-
-				outb(data[3],
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Selects the constant register of watchdog/counter 3 */
-
-				outb(APCI1500_RW_CPT_TMR3_TIME_CST_HIGH,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
+				z8536_write(dev, data[3],
+					    APCI1500_RW_CPT_TMR3_TIME_CST_LOW);
 				/* Writes the high value  */
-
 				data[3] = data[3] >> 8;
-				outb(data[3],
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Selects the master configuration register */
-
-				outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Reads the register */
-
-				i_MasterConfiguration =
-					inb(devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, data[3],
+					    APCI1500_RW_CPT_TMR3_TIME_CST_HIGH);
 
 				/* Enables watchdog/counter 3 and triggers watchdog/counter 3 */
-
+				i_MasterConfiguration = z8536_read(dev,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 				i_MasterConfiguration =
 					i_MasterConfiguration | 0x10;
-
-				/* Selects the master configuration register */
-				outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
-				/* Writes the new configuration */
-				outb(i_MasterConfiguration,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_MasterConfiguration,
+				    APCI1500_RW_MASTER_CONFIGURATION_CONTROL);
 
 				/* Test if COUNTER */
 				if (data[2] == APCI1500_COUNTER) {
-
-					/* Selects the command register of   */
-					/* watchdog/counter 3                */
-					outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
 					/* Disable the  watchdog/counter 3 and starts it */
-					outb(0x0,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-
-					/* Selects the command register of   */
-					/* watchdog/counter 3                */
-
-					outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0x00,
+					    APCI1500_RW_CPT_TMR3_CMD_STATUS);
 					/* Trigger the  watchdog/counter 3 and starts it */
-					outb(0x2,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-
+					z8536_write(dev, 0x02,
+					    APCI1500_RW_CPT_TMR3_CMD_STATUS);
 				}
 
 			} else {
@@ -1471,7 +1096,6 @@
 				struct comedi_insn *insn,
 				unsigned int *data)
 {
-	struct apci1500_private *devpriv = dev->private;
 	int i_CommandAndStatusValue;
 
 	switch (data[0]) {
@@ -1486,13 +1110,8 @@
 
 				/* Starts timer/counter 1 */
 				i_TimerCounter1Enabled = 1;
-				/* Selects the commands and status register */
-				outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				outb(i_CommandAndStatusValue,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_CommandAndStatusValue,
+					    APCI1500_RW_CPT_TMR1_CMD_STATUS);
 			} else {
 				dev_warn(dev->class_dev,
 					"Counter/Timer1 not configured\n");
@@ -1501,16 +1120,8 @@
 			break;
 
 		case STOP:
-
 			/* Stop timer/counter 1 */
-
-			/* Selects the commands and status register */
-			outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(0x00,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, 0x00, APCI1500_RW_CPT_TMR1_CMD_STATUS);
 			i_TimerCounter1Enabled = 0;
 			break;
 
@@ -1525,14 +1136,8 @@
 
 					i_CommandAndStatusValue = 0x2;
 				}
-
-				/* Selects the commands and status register */
-				outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				outb(i_CommandAndStatusValue,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_CommandAndStatusValue,
+					    APCI1500_RW_CPT_TMR1_CMD_STATUS);
 			} else {
 				dev_warn(dev->class_dev,
 					"Counter/Timer1 not configured\n");
@@ -1558,13 +1163,8 @@
 
 				/* Starts timer/counter 2 */
 				i_TimerCounter2Enabled = 1;
-				/* Selects the commands and status register */
-				outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				outb(i_CommandAndStatusValue,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_CommandAndStatusValue,
+					    APCI1500_RW_CPT_TMR2_CMD_STATUS);
 			} else {
 				dev_warn(dev->class_dev,
 					"Counter/Timer2 not configured\n");
@@ -1573,16 +1173,8 @@
 			break;
 
 		case STOP:
-
 			/* Stop timer/counter 2 */
-
-			/* Selects the commands and status register */
-			outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(0x00,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, 0x00, APCI1500_RW_CPT_TMR2_CMD_STATUS);
 			i_TimerCounter2Enabled = 0;
 			break;
 		case TRIGGER:
@@ -1596,14 +1188,8 @@
 
 					i_CommandAndStatusValue = 0x2;
 				}
-
-				/* Selects the commands and status register */
-				outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				outb(i_CommandAndStatusValue,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+				z8536_write(dev, i_CommandAndStatusValue,
+					    APCI1500_RW_CPT_TMR2_CMD_STATUS);
 			} else {
 				dev_warn(dev->class_dev,
 					"Counter/Timer2 not configured\n");
@@ -1628,14 +1214,8 @@
 
 				/* Starts Watchdog/counter 3 */
 				i_WatchdogCounter3Enabled = 1;
-				/* Selects the commands and status register */
-				outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				outb(i_CommandAndStatusValue,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-
+				z8536_write(dev, i_CommandAndStatusValue,
+					    APCI1500_RW_CPT_TMR3_CMD_STATUS);
 			} else {
 				dev_warn(dev->class_dev,
 					"Watchdog/Counter3 not configured\n");
@@ -1644,16 +1224,8 @@
 			break;
 
 		case STOP:
-
 			/* Stop Watchdog/counter 3 */
-
-			/* Selects the commands and status register */
-			outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(0x00,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			z8536_write(dev, 0x00, APCI1500_RW_CPT_TMR3_CMD_STATUS);
 			i_WatchdogCounter3Enabled = 0;
 			break;
 
@@ -1670,14 +1242,8 @@
 
 						i_CommandAndStatusValue = 0x2;
 					}
-
-					/* Selects the commands and status register */
-					outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					outb(i_CommandAndStatusValue,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, i_CommandAndStatusValue,
+					    APCI1500_RW_CPT_TMR3_CMD_STATUS);
 				} else {
 					dev_warn(dev->class_dev,
 						"Counter3 not configured\n");
@@ -1687,14 +1253,8 @@
 			case 1:
 				/* triggering Watchdog 3 */
 				if (i_WatchdogCounter3Init == 1) {
-
-					/* Selects the commands and status register */
-					outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
-					outb(0x6,
-						devpriv->iobase +
-						APCI1500_Z8536_CONTROL_REGISTER);
+					z8536_write(dev, 0x06,
+					    APCI1500_RW_CPT_TMR3_CMD_STATUS);
 				} else {
 					dev_warn(dev->class_dev,
 						"Watchdog 3 not configured\n");
@@ -1731,7 +1291,6 @@
 			       struct comedi_insn *insn,
 			       unsigned int *data)
 {
-	struct apci1500_private *devpriv = dev->private;
 	int i_CommandAndStatusValue;
 
 	switch (data[0]) {
@@ -1747,30 +1306,15 @@
 
 				i_CommandAndStatusValue = 0x8;
 			}
+			z8536_write(dev, i_CommandAndStatusValue,
+				    APCI1500_RW_CPT_TMR1_CMD_STATUS);
 
-			/* Selects the commands and status register */
-			outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_CommandAndStatusValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-
-			/* Selects the counter register (high) */
-			outb(APCI1500_R_CPT_TMR1_VALUE_HIGH,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			data[0] =
-				inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			data[0] = z8536_read(dev,
+					     APCI1500_R_CPT_TMR1_VALUE_HIGH);
 			data[0] = data[0] << 8;
 			data[0] = data[0] & 0xff00;
-			outb(APCI1500_R_CPT_TMR1_VALUE_LOW,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			data[0] =
-				data[0] | inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			data[0] |= z8536_read(dev,
+					      APCI1500_R_CPT_TMR1_VALUE_LOW);
 		} else {
 			dev_warn(dev->class_dev,
 				"Timer/Counter1 not configured\n");
@@ -1789,30 +1333,15 @@
 
 				i_CommandAndStatusValue = 0x8;
 			}
+			z8536_write(dev, i_CommandAndStatusValue,
+				    APCI1500_RW_CPT_TMR2_CMD_STATUS);
 
-			/* Selects the commands and status register */
-			outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_CommandAndStatusValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-
-			/* Selects the counter register (high) */
-			outb(APCI1500_R_CPT_TMR2_VALUE_HIGH,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			data[0] =
-				inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			data[0] = z8536_read(dev,
+					     APCI1500_R_CPT_TMR2_VALUE_HIGH);
 			data[0] = data[0] << 8;
 			data[0] = data[0] & 0xff00;
-			outb(APCI1500_R_CPT_TMR2_VALUE_LOW,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			data[0] =
-				data[0] | inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			data[0] |= z8536_read(dev,
+					      APCI1500_R_CPT_TMR2_VALUE_LOW);
 		} else {
 			dev_warn(dev->class_dev,
 				"Timer/Counter2 not configured\n");
@@ -1831,30 +1360,15 @@
 
 				i_CommandAndStatusValue = 0x8;
 			}
+			z8536_write(dev, i_CommandAndStatusValue,
+				    APCI1500_RW_CPT_TMR3_CMD_STATUS);
 
-			/* Selects the commands and status register */
-			outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			outb(i_CommandAndStatusValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-
-			/* Selects the counter register (high) */
-			outb(APCI1500_R_CPT_TMR3_VALUE_HIGH,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			data[0] =
-				inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			data[0] = z8536_read(dev,
+					     APCI1500_R_CPT_TMR3_VALUE_HIGH);
 			data[0] = data[0] << 8;
 			data[0] = data[0] & 0xff00;
-			outb(APCI1500_R_CPT_TMR3_VALUE_LOW,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			data[0] =
-				data[0] | inb(devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
+			data[0] |= z8536_read(dev,
+					      APCI1500_R_CPT_TMR3_VALUE_LOW);
 		} else {
 			dev_warn(dev->class_dev,
 				"WatchdogCounter3 not configured\n");
@@ -1896,12 +1410,11 @@
 			    unsigned int *data)
 {
 	struct apci1500_private *devpriv = dev->private;
-	unsigned int ui_Status;
 	int i_RegValue;
 	int i_Constant;
 
 	devpriv->tsk_Current = current;
-	outl(0x0, devpriv->i_IobaseAmcc + 0x38);
+	outl(0x0, devpriv->amcc + AMCC_OP_REG_INTCSR);
 	if (data[0] == 1) {
 		i_Constant = 0xC0;
 	} else {
@@ -1914,99 +1427,53 @@
 		}
 	}
 
-	/* Selects the mode specification register of port B */
-	outb(APCI1500_RW_PORT_B_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_RegValue = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(APCI1500_RW_PORT_B_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	/* Writes the new configuration (APCI1500_OR) */
+	i_RegValue = z8536_read(dev, APCI1500_RW_PORT_B_SPECIFICATION);
 	i_RegValue = (i_RegValue & 0xF9) | APCI1500_OR;
+	z8536_write(dev, i_RegValue, APCI1500_RW_PORT_B_SPECIFICATION);
 
-	outb(i_RegValue, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port B */
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	/* Authorises the interrupt on the board */
-	outb(0xC0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the pattern polarity register of port B */
-	outb(APCI1500_RW_PORT_B_PATTERN_POLARITY,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(i_Constant, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the pattern transition register of port B */
-	outb(APCI1500_RW_PORT_B_PATTERN_TRANSITION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(i_Constant, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the pattern mask register of port B */
-	outb(APCI1500_RW_PORT_B_PATTERN_MASK,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(i_Constant, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, 0xc0, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
 
-	/* Selects the command and status register of port A */
-	outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_RegValue = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, i_Constant, APCI1500_RW_PORT_B_PATTERN_POLARITY);
+	z8536_write(dev, i_Constant, APCI1500_RW_PORT_B_PATTERN_TRANSITION);
+	z8536_write(dev, i_Constant, APCI1500_RW_PORT_B_PATTERN_MASK);
+
 	/* Deletes the interrupt of port A */
-
+	i_RegValue = z8536_read(dev, APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
 	i_RegValue = (i_RegValue & 0x0F) | 0x20;
-	outb(i_RegValue, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port  B */
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_RegValue = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, i_RegValue, APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
+
 	/* Deletes the interrupt of port B */
-
+	i_RegValue = z8536_read(dev, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
 	i_RegValue = (i_RegValue & 0x0F) | 0x20;
-	outb(i_RegValue, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, i_RegValue, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
 
-	/* Selects the command and status register of timer 1 */
-	outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_RegValue = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	/* Deletes the interrupt of timer 1 */
-
+	i_RegValue = z8536_read(dev, APCI1500_RW_CPT_TMR1_CMD_STATUS);
 	i_RegValue = (i_RegValue & 0x0F) | 0x20;
-	outb(i_RegValue, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, i_RegValue, APCI1500_RW_CPT_TMR1_CMD_STATUS);
 
-	/* Selects the command and status register of timer 2 */
-	outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_RegValue = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	/* Deletes the interrupt of timer 2 */
-
+	i_RegValue = z8536_read(dev, APCI1500_RW_CPT_TMR2_CMD_STATUS);
 	i_RegValue = (i_RegValue & 0x0F) | 0x20;
-	outb(i_RegValue, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, i_RegValue, APCI1500_RW_CPT_TMR2_CMD_STATUS);
 
-	/* Selects the command and status register of timer 3 */
-	outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_RegValue = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	/* Deletes the interrupt of timer 3 */
-
+	i_RegValue = z8536_read(dev, APCI1500_RW_CPT_TMR3_CMD_STATUS);
 	i_RegValue = (i_RegValue & 0x0F) | 0x20;
-	outb(i_RegValue, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, i_RegValue, APCI1500_RW_CPT_TMR3_CMD_STATUS);
 
-	/* Selects the master interrupt control register */
-	outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	/* Authorizes the main interrupt on the board */
-	outb(0xD0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, 0xd0, APCI1500_RW_MASTER_INTERRUPT_CONTROL);
 
 	/* Enables the PCI interrupt */
-	outl(0x3000, devpriv->i_IobaseAmcc + 0x38);
-	ui_Status = inl(devpriv->i_IobaseAmcc + 0x10);
-	ui_Status = inl(devpriv->i_IobaseAmcc + 0x38);
-	outl(0x23000, devpriv->i_IobaseAmcc + 0x38);
+	outl(0x2000 | INTCSR_INBOX_FULL_INT,
+	     devpriv->amcc + AMCC_OP_REG_INTCSR);
+	inl(devpriv->amcc + AMCC_OP_REG_IMB1);
+	inl(devpriv->amcc + AMCC_OP_REG_INTCSR);
+	outl(INTCSR_INBOX_INTR_STATUS | 0x2000 | INTCSR_INBOX_FULL_INT,
+	     devpriv->amcc + AMCC_OP_REG_INTCSR);
 
 	return insn->n;
 }
@@ -2016,178 +1483,110 @@
 
 	struct comedi_device *dev = d;
 	struct apci1500_private *devpriv = dev->private;
-	unsigned int ui_InterruptStatus = 0;
-	int i_RegValue = 0;
+	unsigned int val;
 
 	/* Clear the interrupt mask */
 	i_InterruptMask = 0;
 
-	/* Read the board interrupt status */
-	ui_InterruptStatus = inl(devpriv->i_IobaseAmcc + 0x38);
+	val = inl(devpriv->amcc + AMCC_OP_REG_INTCSR);
+	if (!(val & INTCSR_INTR_ASSERTED))
+		return IRQ_NONE;
 
-	/* Test if board generated a interrupt */
-	if ((ui_InterruptStatus & 0x800000) == 0x800000) {
-		/* Disable all Interrupt */
-		/* Selects the master interrupt control register */
-		/* Disables  the main interrupt on the board */
-		/* Selects the command and status register of port A */
-		outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-			devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		i_RegValue =
-			inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		if ((i_RegValue & 0x60) == 0x60) {
-			/* Selects the command and status register of port A */
-			outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Deletes the interrupt of port A */
-			i_RegValue = (i_RegValue & 0x0F) | 0x20;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			i_InterruptMask = i_InterruptMask | 1;
-			if (i_Logic == APCI1500_OR_PRIORITY) {
-				outb(APCI1500_RW_PORT_A_SPECIFICATION,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				i_RegValue =
-					inb(devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+	/* Disable all Interrupt */
+	/* Selects the master interrupt control register */
+	/* Disables  the main interrupt on the board */
+	val = z8536_read(dev, APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
+	if ((val & 0x60) == 0x60) {
+		/* Deletes the interrupt of port A */
+		val &= 0x0f;
+		val |= 0x20;
+		z8536_write(dev, val, APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
+		i_InterruptMask = i_InterruptMask | 1;
+		if (i_Logic == APCI1500_OR_PRIORITY) {
+			val = z8536_read(dev, APCI1500_RW_PORT_A_SPECIFICATION);
 
-				/* Selects the interrupt vector register of port A */
-				outb(APCI1500_RW_PORT_A_INTERRUPT_CONTROL,
-					devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
-				i_RegValue =
-					inb(devpriv->iobase +
-					APCI1500_Z8536_CONTROL_REGISTER);
+			val = z8536_read(dev,
+					 APCI1500_RW_PORT_A_INTERRUPT_CONTROL);
 
-				i_InputChannel = 1 + (i_RegValue >> 1);
+			i_InputChannel = 1 + (val >> 1);
 
-			} else {
-				i_InputChannel = 0;
-			}
+		} else {
+			i_InputChannel = 0;
 		}
-
-		/* Selects the command and status register of port B */
-		outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-			devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		i_RegValue =
-			inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		if ((i_RegValue & 0x60) == 0x60) {
-			/* Selects the command and status register of port B */
-			outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Deletes the interrupt of port B */
-			i_RegValue = (i_RegValue & 0x0F) | 0x20;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Reads port B */
-			i_RegValue =
-				inb((unsigned int) devpriv->iobase +
-				APCI1500_Z8536_PORT_B);
-
-			i_RegValue = i_RegValue & 0xC0;
-			/* Tests if this is an external error */
-
-			if (i_RegValue) {
-				/* Disable the interrupt */
-				/* Selects the command and status register of port B */
-				outl(0x0, devpriv->i_IobaseAmcc + 0x38);
-
-				if (i_RegValue & 0x80) {
-					i_InterruptMask =
-						i_InterruptMask | 0x40;
-				}
-
-				if (i_RegValue & 0x40) {
-					i_InterruptMask =
-						i_InterruptMask | 0x80;
-				}
-			} else {
-				i_InterruptMask = i_InterruptMask | 2;
-			}
-		}
-
-		/* Selects the command and status register of timer 1 */
-		outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-			devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		i_RegValue =
-			inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		if ((i_RegValue & 0x60) == 0x60) {
-			/* Selects the command and status register of timer 1 */
-			outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Deletes the interrupt of timer 1 */
-			i_RegValue = (i_RegValue & 0x0F) | 0x20;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			i_InterruptMask = i_InterruptMask | 4;
-		}
-		/* Selects the command and status register of timer 2 */
-		outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-			devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		i_RegValue =
-			inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		if ((i_RegValue & 0x60) == 0x60) {
-			/* Selects the command and status register of timer 2 */
-			outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Deletes the interrupt of timer 2 */
-			i_RegValue = (i_RegValue & 0x0F) | 0x20;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			i_InterruptMask = i_InterruptMask | 8;
-		}
-
-		/* Selects the command and status register of timer 3 */
-		outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-			devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		i_RegValue =
-			inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		if ((i_RegValue & 0x60) == 0x60) {
-			/* Selects the command and status register of timer 3 */
-			outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			/* Deletes the interrupt of timer 3 */
-			i_RegValue = (i_RegValue & 0x0F) | 0x20;
-			outb(i_RegValue,
-				devpriv->iobase +
-				APCI1500_Z8536_CONTROL_REGISTER);
-			if (i_CounterLogic == APCI1500_COUNTER)
-				i_InterruptMask = i_InterruptMask | 0x10;
-			else
-				i_InterruptMask = i_InterruptMask | 0x20;
-		}
-
-		send_sig(SIGIO, devpriv->tsk_Current, 0);	/*  send signal to the sample */
-		/* Enable all Interrupts */
-
-		/* Selects the master interrupt control register */
-		outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL,
-			devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-		/* Authorizes the main interrupt on the board */
-		outb(0xD0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	} else {
-		dev_warn(dev->class_dev,
-			"Interrupt from unknown source\n");
-
 	}
 
+	val = z8536_read(dev, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
+	if ((val & 0x60) == 0x60) {
+		/* Deletes the interrupt of port B */
+		val &= 0x0f;
+		val |= 0x20;
+		z8536_write(dev, val, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
+
+		/* Reads port B */
+		val = inb(dev->iobase + APCI1500_Z8536_PORTB_REG);
+		val &= 0xc0;
+		/* Tests if this is an external error */
+		if (val) {
+			/* Disable the interrupt */
+			/* Selects the command and status register of port B */
+			outl(0x0, devpriv->amcc + AMCC_OP_REG_INTCSR);
+
+			if (val & 0x80)
+				i_InterruptMask |= 0x40;
+
+			if (val & 0x40) {
+				i_InterruptMask |= 0x80;
+			}
+		} else {
+			i_InterruptMask |= 0x02;
+		}
+	}
+
+	val = z8536_read(dev, APCI1500_RW_CPT_TMR1_CMD_STATUS);
+	if ((val & 0x60) == 0x60) {
+		/* Deletes the interrupt of timer 1 */
+		val &= 0x0f;
+		val |= 0x20;
+		z8536_write(dev, val, APCI1500_RW_CPT_TMR1_CMD_STATUS);
+
+		i_InterruptMask |= 0x04;
+	}
+
+	val = z8536_read(dev, APCI1500_RW_CPT_TMR2_CMD_STATUS);
+	if ((val & 0x60) == 0x60) {
+		/* Deletes the interrupt of timer 2 */
+		val &= 0x0f;
+		val |= 0x20;
+		z8536_write(dev, val, APCI1500_RW_CPT_TMR2_CMD_STATUS);
+
+		i_InterruptMask |= 0x08;
+	}
+
+	val = z8536_read(dev, APCI1500_RW_CPT_TMR3_CMD_STATUS);
+	if ((val & 0x60) == 0x60) {
+		/* Deletes the interrupt of timer 3 */
+		val &= 0x0f;
+		val |= 0x20;
+		z8536_write(dev, val, APCI1500_RW_CPT_TMR3_CMD_STATUS);
+
+		if (i_CounterLogic == APCI1500_COUNTER)
+			i_InterruptMask |= 0x10;
+		else
+			i_InterruptMask |= 0x20;
+	}
+
+	/* send signal to the sample */
+	send_sig(SIGIO, devpriv->tsk_Current, 0);
+
+	/* Authorizes the main interrupt on the board */
+	z8536_write(dev, 0xd0, APCI1500_RW_MASTER_INTERRUPT_CONTROL);
+
 	return IRQ_HANDLED;
 }
 
 static int apci1500_reset(struct comedi_device *dev)
 {
 	struct apci1500_private *devpriv = dev->private;
-	int i_DummyRead = 0;
 
 	i_TimerCounter1Init = 0;
 	i_TimerCounter2Init = 0;
@@ -2204,162 +1603,18 @@
 	i_WatchdogCounter3Enabled = 0;
 
 	/* Software reset */
-	i_DummyRead = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	i_DummyRead = inb(devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(1, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_reset(dev);
 
-	/* Selects the master configuration control register */
-	outb(APCI1500_RW_MASTER_CONFIGURATION_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0xF4, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the mode specification register of port A */
-	outb(APCI1500_RW_PORT_A_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0x10, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the data path polarity register of port A */
-	outb(APCI1500_RW_PORT_A_DATA_PCITCH_POLARITY,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* High level of port A means 1 */
-	outb(0xFF, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the data direction register of port A */
-	outb(APCI1500_RW_PORT_A_DATA_DIRECTION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* All bits used as inputs */
-	outb(0xFF, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port A */
-	outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/*  Selects the command and status register of port A */
-	outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates the interrupt management of port A:  */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the handshake specification register of port A */
-	outb(APCI1500_RW_PORT_A_HANDSHAKE_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes the register */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the mode specification register of port B */
-	outb(APCI1500_RW_PORT_B_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	outb(0x10, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the data path polarity register of port B */
-	outb(APCI1500_RW_PORT_B_DATA_PCITCH_POLARITY,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* A high level of port B means 1 */
-	outb(0x7F, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the data direction register of port B */
-	outb(APCI1500_RW_PORT_B_DATA_DIRECTION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* All bits used as inputs */
-	outb(0xFF, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port B */
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port B */
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates the interrupt management of port B:         */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the handshake specification register of port B */
-	outb(APCI1500_RW_PORT_B_HANDSHAKE_SPECIFICATION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes the register */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-
-	/* Selects the data path polarity register of port C */
-	outb(APCI1500_RW_PORT_C_DATA_PCITCH_POLARITY,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* High level of port C means 1 */
-	outb(0x9, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the data direction register of port C */
-	outb(APCI1500_RW_PORT_C_DATA_DIRECTION,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* All bits used as inputs except channel 1 */
-	outb(0x0E, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the special IO register of port C */
-	outb(APCI1500_RW_PORT_C_SPECIAL_IO_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes it */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 1 */
-	outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 1 */
-	outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates the interrupt management of timer 1         */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 2 */
-	outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 2 */
-	outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates Timer 2 interrupt management:               */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 3 */
-	outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes IP and IUS */
-	outb(0x20, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of Timer 3 */
-	outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates interrupt management of timer 3:            */
-	outb(0xE0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the master interrupt control register */
-	outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deletes all interrupts */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
 	/* reset all the digital outputs */
-	outw(0x0, devpriv->i_IobaseAddon + APCI1500_DIGITAL_OP);
-	/* Disable the board interrupt */
-	/* Selects the master interrupt control register */
-	outb(APCI1500_RW_MASTER_INTERRUPT_CONTROL,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	outw(0x0, devpriv->addon + APCI1500_DO_REG);
+
 	/* Deactivates all interrupts */
-	outb(0, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port A */
-	outb(APCI1500_RW_PORT_A_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates all interrupts */
-	outb(0x00, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of port B */
-	outb(APCI1500_RW_PORT_B_COMMAND_AND_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates all interrupts */
-	outb(0x00, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 1 */
-	outb(APCI1500_RW_CPT_TMR1_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates all interrupts */
-	outb(0x00, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 2 */
-	outb(APCI1500_RW_CPT_TMR2_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates all interrupts */
-	outb(0x00, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Selects the command and status register of timer 3*/
-	outb(APCI1500_RW_CPT_TMR3_CMD_STATUS,
-		devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
-	/* Deactivates all interrupts */
-	outb(0x00, devpriv->iobase + APCI1500_Z8536_CONTROL_REGISTER);
+	z8536_write(dev, 0x00, APCI1500_RW_MASTER_INTERRUPT_CONTROL);
+	z8536_write(dev, 0x00, APCI1500_RW_PORT_A_COMMAND_AND_STATUS);
+	z8536_write(dev, 0x00, APCI1500_RW_PORT_B_COMMAND_AND_STATUS);
+	z8536_write(dev, 0x00, APCI1500_RW_CPT_TMR1_CMD_STATUS);
+	z8536_write(dev, 0x00, APCI1500_RW_CPT_TMR2_CMD_STATUS);
+	z8536_write(dev, 0x00, APCI1500_RW_CPT_TMR3_CMD_STATUS);
+
 	return 0;
 }
diff --git a/drivers/staging/comedi/drivers/addi_apci_1500.c b/drivers/staging/comedi/drivers/addi_apci_1500.c
index 30b132c..6892c0a 100644
--- a/drivers/staging/comedi/drivers/addi_apci_1500.c
+++ b/drivers/staging/comedi/drivers/addi_apci_1500.c
@@ -7,11 +7,29 @@
 #include "comedi_fc.h"
 #include "amcc_s5933.h"
 
+/*
+ * PCI Bar 0 Register map (devpriv->amcc)
+ * see amcc_s5933.h for register and bit defines
+ */
+
+/*
+ * PCI Bar 1 Register map (dev->iobase)
+ */
+#define APCI1500_Z8536_PORTC_REG	0x00
+#define APCI1500_Z8536_PORTB_REG	0x01
+#define APCI1500_Z8536_PORTA_REG	0x02
+#define APCI1500_Z8536_CTRL_REG		0x03
+
+/*
+ * PCI Bar 2 Register map (devpriv->addon)
+ */
+#define APCI1500_CLK_SEL_REG		0x00
+#define APCI1500_DI_REG			0x00
+#define APCI1500_DO_REG			0x02
+
 struct apci1500_private {
-	int iobase;
-	int i_IobaseAmcc;
-	int i_IobaseAddon;
-	int i_IobaseReserved;
+	unsigned long amcc;
+	unsigned long addon;
 	unsigned char b_OutputMemoryStatus;
 	struct task_struct *tsk_Current;
 };
@@ -35,10 +53,8 @@
 		return ret;
 
 	dev->iobase = pci_resource_start(pcidev, 1);
-	devpriv->iobase = dev->iobase;
-	devpriv->i_IobaseAmcc = pci_resource_start(pcidev, 0);
-	devpriv->i_IobaseAddon = pci_resource_start(pcidev, 2);
-	devpriv->i_IobaseReserved = pci_resource_start(pcidev, 3);
+	devpriv->amcc = pci_resource_start(pcidev, 0);
+	devpriv->addon = pci_resource_start(pcidev, 2);
 
 	if (pcidev->irq > 0) {
 		ret = request_irq(pcidev->irq, apci1500_interrupt, IRQF_SHARED,
diff --git a/drivers/staging/comedi/drivers/adl_pci6208.c b/drivers/staging/comedi/drivers/adl_pci6208.c
index 528f15c..a3ea4b7 100644
--- a/drivers/staging/comedi/drivers/adl_pci6208.c
+++ b/drivers/staging/comedi/drivers/adl_pci6208.c
@@ -19,8 +19,7 @@
 /*
  * Driver: adl_pci6208
  * Description: ADLink PCI-6208/6216 Series Multi-channel Analog Output Cards
- * Devices: (ADLink) PCI-6208 [adl_pci6208]
- *	    (ADLink) PCI-6216 [adl_pci6216]
+ * Devices: [ADLink] PCI-6208 (adl_pci6208), PCI-6216 (adl_pci6216)
  * Author: nsyeow <nsyeow@pd.jaring.my>
  * Updated: Fri, 30 Jan 2004 14:44:27 +0800
  * Status: untested
diff --git a/drivers/staging/comedi/drivers/adl_pci7x3x.c b/drivers/staging/comedi/drivers/adl_pci7x3x.c
index fb8e5f5..618e641 100644
--- a/drivers/staging/comedi/drivers/adl_pci7x3x.c
+++ b/drivers/staging/comedi/drivers/adl_pci7x3x.c
@@ -22,27 +22,35 @@
  */
 
 /*
-Driver: adl_pci7x3x
-Description: 32/64-Channel Isolated Digital I/O Boards
-Devices: (ADLink) PCI-7230 [adl_pci7230] - 16 input / 16 output
-	 (ADLink) PCI-7233 [adl_pci7233] - 32 input
-	 (ADLink) PCI-7234 [adl_pci7234] - 32 output
-	 (ADLink) PCI-7432 [adl_pci7432] - 32 input / 32 output
-	 (ADLink) PCI-7433 [adl_pci7433] - 64 input
-	 (ADLink) PCI-7434 [adl_pci7434] - 64 output
-Author: H Hartley Sweeten <hsweeten@visionengravers.com>
-Updated: Thu, 02 Aug 2012 14:27:46 -0700
-Status: untested
-
-The PCI-7230, PCI-7432 and PCI-7433 boards also support external
-interrupt signals on digital input channels 0 and 1. The PCI-7233
-has dual-interrupt sources for change-of-state (COS) on any 16
-digital input channels of LSB and for COS on any 16 digital input
-lines of MSB. Interrupts are not currently supported by this
-driver.
-
-Configuration Options: not applicable, uses comedi PCI auto config
-*/
+ * Driver: adl_pci7x3x
+ * Description: 32/64-Channel Isolated Digital I/O Boards
+ * Devices: [ADLink] PCI-7230 (adl_pci7230), PCI-7233 (adl_pci7233),
+ *   PCI-7234 (adl_pci7234), PCI-7432 (adl_pci7432), PCI-7433 (adl_pci7433),
+ *   PCI-7434 (adl_pci7434)
+ * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
+ * Updated: Thu, 02 Aug 2012 14:27:46 -0700
+ * Status: untested
+ *
+ * One or two subdevices are setup by this driver depending on
+ * the number of digital inputs and/or outputs provided by the
+ * board. Each subdevice has a maximum of 32 channels.
+ *
+ *	PCI-7230 - 2 subdevices: 0 - 16 input, 1 - 16 output
+ *	PCI-7233 - 1 subdevice: 0 - 32 input
+ *	PCI-7234 - 1 subdevice: 0 - 32 output
+ *	PCI-7432 - 2 subdevices: 0 - 32 input, 1 - 32 output
+ *	PCI-7433 - 2 subdevices: 0 - 32 input, 1 - 32 input
+ *	PCI-7434 - 2 subdevices: 0 - 32 output, 1 - 32 output
+ *
+ * The PCI-7230, PCI-7432 and PCI-7433 boards also support external
+ * interrupt signals on digital input channels 0 and 1. The PCI-7233
+ * has dual-interrupt sources for change-of-state (COS) on any 16
+ * digital input channels of LSB and for COS on any 16 digital input
+ * lines of MSB. Interrupts are not currently supported by this
+ * driver.
+ *
+ * Configuration Options: not applicable, uses comedi PCI auto config
+ */
 
 #include <linux/module.h>
 #include <linux/pci.h>
@@ -155,18 +163,6 @@
 		return ret;
 	dev->iobase = pci_resource_start(pcidev, 2);
 
-	/*
-	 * One or two subdevices are setup by this driver depending on
-	 * the number of digital inputs and/or outputs provided by the
-	 * board. Each subdevice has a maximum of 32 channels.
-	 *
-	 *	PCI-7230 - 2 subdevices: 0 - 16 input, 1 - 16 output
-	 *	PCI-7233 - 1 subdevice: 0 - 32 input
-	 *	PCI-7234 - 1 subdevice: 0 - 32 output
-	 *	PCI-7432 - 2 subdevices: 0 - 32 input, 1 - 32 output
-	 *	PCI-7433 - 2 subdevices: 0 - 32 input, 1 - 32 input
-	 *	PCI-7434 - 2 subdevices: 0 - 32 output, 1 - 32 output
-	 */
 	ret = comedi_alloc_subdevices(dev, board->nsubdevs);
 	if (ret)
 		return ret;
diff --git a/drivers/staging/comedi/drivers/adl_pci8164.c b/drivers/staging/comedi/drivers/adl_pci8164.c
index 72bccb44..cc6c53b 100644
--- a/drivers/staging/comedi/drivers/adl_pci8164.c
+++ b/drivers/staging/comedi/drivers/adl_pci8164.c
@@ -18,7 +18,7 @@
 /*
  * Driver: adl_pci8164
  * Description: Driver for the Adlink PCI-8164 4 Axes Motion Control board
- * Devices: (ADLink) PCI-8164 [adl_pci8164]
+ * Devices: [ADLink] PCI-8164 (adl_pci8164)
  * Author: Michel Lachaine <mike@mikelachaine.ca>
  * Status: experimental
  * Updated: Mon, 14 Apr 2008 15:10:32 +0100
diff --git a/drivers/staging/comedi/drivers/adv_pci1723.c b/drivers/staging/comedi/drivers/adv_pci1723.c
index 65f854e..f1945be 100644
--- a/drivers/staging/comedi/drivers/adv_pci1723.c
+++ b/drivers/staging/comedi/drivers/adv_pci1723.c
@@ -20,7 +20,7 @@
  * Driver: adv_pci1723
  * Description: Advantech PCI-1723
  * Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk>
- * Devices: (Advantech) PCI-1723 [adv_pci1723]
+ * Devices: [Advantech] PCI-1723 (adv_pci1723)
  * Updated: Mon, 14 Apr 2008 15:12:56 +0100
  * Status: works
  *
diff --git a/drivers/staging/comedi/drivers/adv_pci1724.c b/drivers/staging/comedi/drivers/adv_pci1724.c
index a8d2840..a3573ea 100644
--- a/drivers/staging/comedi/drivers/adv_pci1724.c
+++ b/drivers/staging/comedi/drivers/adv_pci1724.c
@@ -22,7 +22,7 @@
 /*
  * Driver: adv_pci1724
  * Description: Advantech PCI-1724U
- * Devices: (Advantech) PCI-1724U [adv_pci1724]
+ * Devices: [Advantech] PCI-1724U (adv_pci1724)
  * Author: Frank Mori Hess <fmh6jj@gmail.com>
  * Updated: 2013-02-09
  * Status: works
diff --git a/drivers/staging/comedi/drivers/aio_iiro_16.c b/drivers/staging/comedi/drivers/aio_iiro_16.c
index 7b5ed43..d8884a3 100644
--- a/drivers/staging/comedi/drivers/aio_iiro_16.c
+++ b/drivers/staging/comedi/drivers/aio_iiro_16.c
@@ -1,48 +1,138 @@
 /*
-
-    comedi/drivers/aio_iiro_16.c
-
-    Driver for Access I/O Products PC-104 AIO-IIRO-16 Digital I/O board
-    Copyright (C) 2006 C&C Technologies, Inc.
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-*/
+ * aio_iiro_16.c
+ * Comedi driver for Access I/O Products 104-IIRO-16 board
+ * Copyright (C) 2006 C&C Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 
 /*
-
-Driver: aio_iiro_16
-Description: Access I/O Products PC-104 IIRO16 Relay And Isolated Input Board
-Author: Zachary Ware <zach.ware@cctechnol.com>
-Devices:
- [Access I/O] PC-104 AIO12-8
-Status: experimental
-
-Configuration Options:
-  [0] - I/O port base address
-
-*/
+ * Driver: aio_iiro_16
+ * Description: Access I/O Products PC/104 Isolated Input/Relay Output Board
+ * Author: Zachary Ware <zach.ware@cctechnol.com>
+ * Devices: [Access I/O] 104-IIRO-16 (aio_iiro_16)
+ * Status: experimental
+ *
+ * Configuration Options:
+ *   [0] - I/O port base address
+ *   [1] - IRQ (optional)
+ *
+ * The board supports interrupts on change of state of the digital inputs.
+ * The sample data returned by the async command indicates which inputs
+ * changed state:
+ *
+ *	Bit 7 - IRQ Enable (1) / Disable (0)
+ *	Bit 1 - Input 8-15 Changed State (1 = Changed, 0 = No Change)
+ *	Bit 0 - Input 0-7 Changed State (1 = Changed, 0 = No Change)
+ */
 
 #include <linux/module.h>
+#include <linux/interrupt.h>
+
 #include "../comedidev.h"
 
-#define AIO_IIRO_16_RELAY_0_7	0x00
-#define AIO_IIRO_16_INPUT_0_7	0x01
-#define AIO_IIRO_16_IRQ		0x02
-#define AIO_IIRO_16_RELAY_8_15	0x04
-#define AIO_IIRO_16_INPUT_8_15	0x05
+#include "comedi_fc.h"
 
-static int aio_iiro_16_dio_insn_bits_write(struct comedi_device *dev,
-					   struct comedi_subdevice *s,
-					   struct comedi_insn *insn,
-					   unsigned int *data)
+#define AIO_IIRO_16_RELAY_0_7		0x00
+#define AIO_IIRO_16_INPUT_0_7		0x01
+#define AIO_IIRO_16_IRQ			0x02
+#define AIO_IIRO_16_RELAY_8_15		0x04
+#define AIO_IIRO_16_INPUT_8_15		0x05
+#define AIO_IIRO_16_STATUS		0x07
+#define AIO_IIRO_16_STATUS_IRQE		BIT(7)
+#define AIO_IIRO_16_STATUS_INPUT_8_15	BIT(1)
+#define AIO_IIRO_16_STATUS_INPUT_0_7	BIT(0)
+
+static irqreturn_t aio_iiro_16_cos(int irq, void *d)
+{
+	struct comedi_device *dev = d;
+	struct comedi_subdevice *s = dev->read_subdev;
+	unsigned int status;
+
+	status = inb(dev->iobase + AIO_IIRO_16_STATUS);
+	if (!(status & AIO_IIRO_16_STATUS_IRQE))
+		return IRQ_NONE;
+
+	comedi_buf_write_samples(s, &status, 1);
+	comedi_handle_events(dev, s);
+
+	return IRQ_HANDLED;
+}
+
+static void aio_iiro_enable_irq(struct comedi_device *dev, bool enable)
+{
+	if (enable)
+		inb(dev->iobase + AIO_IIRO_16_IRQ);
+	else
+		outb(0, dev->iobase + AIO_IIRO_16_IRQ);
+}
+
+static int aio_iiro_16_cos_cancel(struct comedi_device *dev,
+				  struct comedi_subdevice *s)
+{
+	aio_iiro_enable_irq(dev, false);
+
+	return 0;
+}
+
+static int aio_iiro_16_cos_cmd(struct comedi_device *dev,
+			       struct comedi_subdevice *s)
+{
+	aio_iiro_enable_irq(dev, true);
+
+	return 0;
+}
+
+static int aio_iiro_16_cos_cmdtest(struct comedi_device *dev,
+				   struct comedi_subdevice *s,
+				   struct comedi_cmd *cmd)
+{
+	int err = 0;
+
+	/* Step 1 : check if triggers are trivially valid */
+
+	err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
+	err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
+	err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
+	err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+	err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_NONE);
+
+	if (err)
+		return 1;
+
+	/* Step 2a : make sure trigger sources are unique */
+	/* Step 2b : and mutually compatible */
+
+	/* Step 3: check if arguments are trivially valid */
+
+	err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
+	err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
+	err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
+
+	if (err)
+		return 3;
+
+	/* Step 4: fix up any arguments */
+
+	/* Step 5: check channel list if it exists */
+
+	return 0;
+}
+
+static int aio_iiro_16_do_insn_bits(struct comedi_device *dev,
+				    struct comedi_subdevice *s,
+				    struct comedi_insn *insn,
+				    unsigned int *data)
 {
 	if (comedi_dio_update_state(s, data)) {
 		outb(s->state & 0xff, dev->iobase + AIO_IIRO_16_RELAY_0_7);
@@ -55,10 +145,10 @@
 	return insn->n;
 }
 
-static int aio_iiro_16_dio_insn_bits_read(struct comedi_device *dev,
-					  struct comedi_subdevice *s,
-					  struct comedi_insn *insn,
-					  unsigned int *data)
+static int aio_iiro_16_di_insn_bits(struct comedi_device *dev,
+				    struct comedi_subdevice *s,
+				    struct comedi_insn *insn,
+				    unsigned int *data)
 {
 	data[1] = 0;
 	data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_0_7);
@@ -77,25 +167,52 @@
 	if (ret)
 		return ret;
 
+	aio_iiro_enable_irq(dev, false);
+
+	/*
+	 * Digital input change of state interrupts are optionally supported
+	 * using IRQ 2-7, 10-12, 14, or 15.
+	 */
+	if ((1 << it->options[1]) & 0xdcfc) {
+		ret = request_irq(it->options[1], aio_iiro_16_cos, 0,
+				  dev->board_name, dev);
+		if (ret == 0)
+			dev->irq = it->options[1];
+	}
+
 	ret = comedi_alloc_subdevices(dev, 2);
 	if (ret)
 		return ret;
 
+	/* Digital Output subdevice */
 	s = &dev->subdevices[0];
-	s->type = COMEDI_SUBD_DIO;
-	s->subdev_flags = SDF_WRITABLE;
-	s->n_chan = 16;
-	s->maxdata = 1;
-	s->range_table = &range_digital;
-	s->insn_bits = aio_iiro_16_dio_insn_bits_write;
+	s->type		= COMEDI_SUBD_DO;
+	s->subdev_flags	= SDF_WRITABLE;
+	s->n_chan	= 16;
+	s->maxdata	= 1;
+	s->range_table	= &range_digital;
+	s->insn_bits	= aio_iiro_16_do_insn_bits;
 
+	/* get the initial state of the relays */
+	s->state = inb(dev->iobase + AIO_IIRO_16_RELAY_0_7) |
+		   (inb(dev->iobase + AIO_IIRO_16_RELAY_8_15) << 8);
+
+	/* Digital Input subdevice */
 	s = &dev->subdevices[1];
-	s->type = COMEDI_SUBD_DIO;
-	s->subdev_flags = SDF_READABLE;
-	s->n_chan = 16;
-	s->maxdata = 1;
-	s->range_table = &range_digital;
-	s->insn_bits = aio_iiro_16_dio_insn_bits_read;
+	s->type		= COMEDI_SUBD_DI;
+	s->subdev_flags	= SDF_READABLE;
+	s->n_chan	= 16;
+	s->maxdata	= 1;
+	s->range_table	= &range_digital;
+	s->insn_bits	= aio_iiro_16_di_insn_bits;
+	if (dev->irq) {
+		dev->read_subdev = s;
+		s->subdev_flags	|= SDF_CMD_READ;
+		s->len_chanlist	= 1;
+		s->do_cmdtest	= aio_iiro_16_cos_cmdtest;
+		s->do_cmd	= aio_iiro_16_cos_cmd;
+		s->cancel	= aio_iiro_16_cos_cancel;
+	}
 
 	return 0;
 }
@@ -109,5 +226,5 @@
 module_comedi_driver(aio_iiro_16_driver);
 
 MODULE_AUTHOR("Comedi http://www.comedi.org");
-MODULE_DESCRIPTION("Comedi low-level driver");
+MODULE_DESCRIPTION("Comedi driver for Access I/O Products 104-IIRO-16 board");
 MODULE_LICENSE("GPL");
diff --git a/drivers/staging/comedi/drivers/c6xdigio.c b/drivers/staging/comedi/drivers/c6xdigio.c
index e7cb703..1a109e3 100644
--- a/drivers/staging/comedi/drivers/c6xdigio.c
+++ b/drivers/staging/comedi/drivers/c6xdigio.c
@@ -22,7 +22,7 @@
  * Description: Mechatronic Systems Inc. C6x_DIGIO DSP daughter card
  * Author: Dan Block
  * Status: unknown
- * Devices: (Mechatronic Systems Inc.) C6x_DIGIO DSP daughter card [c6xdigio]
+ * Devices: [Mechatronic Systems Inc.] C6x_DIGIO DSP daughter card (c6xdigio)
  * Updated: Sun Nov 20 20:18:34 EST 2005
  *
  * Configuration Options:
diff --git a/drivers/staging/comedi/drivers/cb_pcidda.c b/drivers/staging/comedi/drivers/cb_pcidda.c
index 01875d7..2b2cfcd 100644
--- a/drivers/staging/comedi/drivers/cb_pcidda.c
+++ b/drivers/staging/comedi/drivers/cb_pcidda.c
@@ -22,12 +22,10 @@
 /*
  * Driver: cb_pcidda
  * Description: MeasurementComputing PCI-DDA series
- * Devices: (Measurement Computing) PCI-DDA08/12 [pci-dda08/12]
- *	    (Measurement Computing) PCI-DDA04/12 [pci-dda04/12]
- *	    (Measurement Computing) PCI-DDA02/12 [pci-dda02/12]
- *	    (Measurement Computing) PCI-DDA08/16 [pci-dda08/16]
- *	    (Measurement Computing) PCI-DDA04/16 [pci-dda04/16]
- *	    (Measurement Computing) PCI-DDA02/16 [pci-dda02/16]
+ * Devices: [Measurement Computing] PCI-DDA08/12 (pci-dda08/12),
+ *   PCI-DDA04/12 (pci-dda04/12), PCI-DDA02/12 (pci-dda02/12),
+ *   PCI-DDA08/16 (pci-dda08/16), PCI-DDA04/16 (pci-dda04/16),
+ *   PCI-DDA02/16 (pci-dda02/16)
  * Author: Ivan Martinez <ivanmr@altavista.com>
  *	   Frank Mori Hess <fmhess@users.sourceforge.net>
  * Status: works
diff --git a/drivers/staging/comedi/drivers/comedi_bond.c b/drivers/staging/comedi/drivers/comedi_bond.c
index 85b2f4a..221d381 100644
--- a/drivers/staging/comedi/drivers/comedi_bond.c
+++ b/drivers/staging/comedi/drivers/comedi_bond.c
@@ -261,6 +261,7 @@
 			{
 				/* Append dev:subdev to devpriv->name */
 				char buf[20];
+
 				snprintf(buf, sizeof(buf), "%u:%u ",
 					 bdev->minor, bdev->subdev);
 				strlcat(devpriv->name, buf,
diff --git a/drivers/staging/comedi/drivers/comedi_isadma.c b/drivers/staging/comedi/drivers/comedi_isadma.c
new file mode 100644
index 0000000..dbdea71
--- /dev/null
+++ b/drivers/staging/comedi/drivers/comedi_isadma.c
@@ -0,0 +1,262 @@
+/*
+ * COMEDI ISA DMA support functions
+ * Copyright (c) 2014 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <asm/dma.h>
+
+#include "../comedidev.h"
+
+#include "comedi_isadma.h"
+
+/**
+ * comedi_isadma_program - program and enable an ISA DMA transfer
+ * @desc:	the ISA DMA cookie to program and enable
+ */
+void comedi_isadma_program(struct comedi_isadma_desc *desc)
+{
+	unsigned long flags;
+
+	flags = claim_dma_lock();
+	clear_dma_ff(desc->chan);
+	set_dma_mode(desc->chan, desc->mode);
+	set_dma_addr(desc->chan, desc->hw_addr);
+	set_dma_count(desc->chan, desc->size);
+	enable_dma(desc->chan);
+	release_dma_lock(flags);
+}
+EXPORT_SYMBOL_GPL(comedi_isadma_program);
+
+/**
+ * comedi_isadma_disable - disable the ISA DMA channel
+ * @dma_chan:	the DMA channel to disable
+ *
+ * Returns the residue (remaining bytes) left in the DMA transfer.
+ */
+unsigned int comedi_isadma_disable(unsigned int dma_chan)
+{
+	unsigned long flags;
+	unsigned int residue;
+
+	flags = claim_dma_lock();
+	disable_dma(dma_chan);
+	residue = get_dma_residue(dma_chan);
+	release_dma_lock(flags);
+
+	return residue;
+}
+EXPORT_SYMBOL_GPL(comedi_isadma_disable);
+
+/**
+ * comedi_isadma_disable_on_sample - disable the ISA DMA channel
+ * @dma_chan:	the DMA channel to disable
+ * @size:	the sample size (in bytes)
+ *
+ * Returns the residue (remaining bytes) left in the DMA transfer.
+ */
+unsigned int comedi_isadma_disable_on_sample(unsigned int dma_chan,
+					     unsigned int size)
+{
+	int stalled = 0;
+	unsigned long flags;
+	unsigned int residue;
+	unsigned int new_residue;
+
+	residue = comedi_isadma_disable(dma_chan);
+	while (residue % size) {
+		/* residue is a partial sample, enable DMA to allow more data */
+		flags = claim_dma_lock();
+		enable_dma(dma_chan);
+		release_dma_lock(flags);
+
+		udelay(2);
+		new_residue = comedi_isadma_disable(dma_chan);
+
+		/* is DMA stalled? */
+		if (new_residue == residue) {
+			stalled++;
+			if (stalled > 10)
+				break;
+		}
+		residue = new_residue;
+		stalled = 0;
+	}
+	return residue;
+}
+EXPORT_SYMBOL_GPL(comedi_isadma_disable_on_sample);
+
+/**
+ * comedi_isadma_poll - poll the current DMA transfer
+ * @dma:	the ISA DMA to poll
+ *
+ * Returns the position (in bytes) of the current DMA transfer.
+ */
+unsigned int comedi_isadma_poll(struct comedi_isadma *dma)
+{
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
+	unsigned long flags;
+	unsigned int result;
+	unsigned int result1;
+
+	flags = claim_dma_lock();
+	clear_dma_ff(desc->chan);
+	if (!isa_dma_bridge_buggy)
+		disable_dma(desc->chan);
+	result = get_dma_residue(desc->chan);
+	/*
+	 * Read the counter again and choose higher value in order to
+	 * avoid reading during counter lower byte roll over if the
+	 * isa_dma_bridge_buggy is set.
+	 */
+	result1 = get_dma_residue(desc->chan);
+	if (!isa_dma_bridge_buggy)
+		enable_dma(desc->chan);
+	release_dma_lock(flags);
+
+	if (result < result1)
+		result = result1;
+	if (result >= desc->size || result == 0)
+		return 0;
+	else
+		return desc->size - result;
+}
+EXPORT_SYMBOL_GPL(comedi_isadma_poll);
+
+/**
+ * comedi_isadma_set_mode - set the ISA DMA transfer direction
+ * @desc:	the ISA DMA cookie to set
+ * @dma_dir:	the DMA direction
+ */
+void comedi_isadma_set_mode(struct comedi_isadma_desc *desc, char dma_dir)
+{
+	desc->mode = (dma_dir == COMEDI_ISADMA_READ) ? DMA_MODE_READ
+						     : DMA_MODE_WRITE;
+}
+EXPORT_SYMBOL_GPL(comedi_isadma_set_mode);
+
+/**
+ * comedi_isadma_alloc - allocate and initialize the ISA DMA
+ * @dev:	comedi_device struct
+ * @n_desc:	the number of cookies to allocate
+ * @dma_chan:	DMA channel for the first cookie
+ * @dma_chan2:	DMA channel for the second cookie
+ * @maxsize:	the size of the buffer to allocate for each cookie
+ * @dma_dir:	the DMA direction
+ *
+ * Returns the allocated and initialized ISA DMA or NULL if anything fails.
+ */
+struct comedi_isadma *comedi_isadma_alloc(struct comedi_device *dev,
+					  int n_desc, unsigned int dma_chan1,
+					  unsigned int dma_chan2,
+					  unsigned int maxsize, char dma_dir)
+{
+	struct comedi_isadma *dma = NULL;
+	struct comedi_isadma_desc *desc;
+	unsigned int dma_chans[2];
+	int i;
+
+	if (n_desc < 1 || n_desc > 2)
+		goto no_dma;
+
+	dma = kzalloc(sizeof(*dma), GFP_KERNEL);
+	if (!dma)
+		goto no_dma;
+
+	desc = kcalloc(n_desc, sizeof(*desc), GFP_KERNEL);
+	if (!desc)
+		goto no_dma;
+	dma->desc = desc;
+	dma->n_desc = n_desc;
+
+	dma_chans[0] = dma_chan1;
+	if (dma_chan2 == 0 || dma_chan2 == dma_chan1)
+		dma_chans[1] = dma_chan1;
+	else
+		dma_chans[1] = dma_chan2;
+
+	if (request_dma(dma_chans[0], dev->board_name))
+		goto no_dma;
+	dma->chan = dma_chans[0];
+	if (dma_chans[1] != dma_chans[0]) {
+		if (request_dma(dma_chans[1], dev->board_name))
+			goto no_dma;
+	}
+	dma->chan2 = dma_chans[1];
+
+	for (i = 0; i < n_desc; i++) {
+		desc = &dma->desc[i];
+		desc->chan = dma_chans[i];
+		desc->maxsize = maxsize;
+		desc->virt_addr = dma_alloc_coherent(NULL, desc->maxsize,
+						     &desc->hw_addr,
+						     GFP_KERNEL);
+		if (!desc->virt_addr)
+			goto no_dma;
+		comedi_isadma_set_mode(desc, dma_dir);
+	}
+
+	return dma;
+
+no_dma:
+	comedi_isadma_free(dma);
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(comedi_isadma_alloc);
+
+/**
+ * comedi_isadma_free - free the ISA DMA
+ * @dma:	the ISA DMA to free
+ */
+void comedi_isadma_free(struct comedi_isadma *dma)
+{
+	struct comedi_isadma_desc *desc;
+	int i;
+
+	if (!dma)
+		return;
+
+	if (dma->desc) {
+		for (i = 0; i < dma->n_desc; i++) {
+			desc = &dma->desc[i];
+			if (desc->virt_addr)
+				dma_free_coherent(NULL, desc->maxsize,
+						desc->virt_addr, desc->hw_addr);
+		}
+		kfree(dma->desc);
+	}
+	if (dma->chan2 && dma->chan2 != dma->chan)
+		free_dma(dma->chan2);
+	if (dma->chan)
+		free_dma(dma->chan);
+	kfree(dma);
+}
+EXPORT_SYMBOL_GPL(comedi_isadma_free);
+
+static int __init comedi_isadma_init(void)
+{
+	return 0;
+}
+module_init(comedi_isadma_init);
+
+static void __exit comedi_isadma_exit(void)
+{
+}
+module_exit(comedi_isadma_exit);
+
+MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
+MODULE_DESCRIPTION("Comedi ISA DMA support");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/comedi/drivers/comedi_isadma.h b/drivers/staging/comedi/drivers/comedi_isadma.h
new file mode 100644
index 0000000..c7c524f
--- /dev/null
+++ b/drivers/staging/comedi/drivers/comedi_isadma.h
@@ -0,0 +1,116 @@
+/*
+ * COMEDI ISA DMA support functions
+ * Copyright (c) 2014 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _COMEDI_ISADMA_H
+#define _COMEDI_ISADMA_H
+
+/*
+ * These are used to avoid issues when <asm/dma.h> and the DMA_MODE_
+ * defines are not available.
+ */
+#define COMEDI_ISADMA_READ	0
+#define COMEDI_ISADMA_WRITE	1
+
+/**
+ * struct comedi_isadma_desc - cookie for ISA DMA
+ * @virt_addr:	virtual address of buffer
+ * @hw_addr:	hardware (bus) address of buffer
+ * @chan:	DMA channel
+ * @maxsize:	allocated size of buffer (in bytes)
+ * @size:	transfer size (in bytes)
+ * @mode:	DMA_MODE_READ or DMA_MODE_WRITE
+ */
+struct comedi_isadma_desc {
+	void *virt_addr;
+	dma_addr_t hw_addr;
+	unsigned int chan;
+	unsigned int maxsize;
+	unsigned int size;
+	char mode;
+};
+
+/**
+ * struct comedi_isadma - ISA DMA data
+ * @desc:	cookie for each DMA buffer
+ * @n_desc:	the number of cookies
+ * @cur_dma:	the current cookie in use
+ * @chan:	the first DMA channel requested
+ * @chan2:	the second DMA channel requested
+ */
+struct comedi_isadma {
+	struct comedi_isadma_desc *desc;
+	int n_desc;
+	int cur_dma;
+	unsigned int chan;
+	unsigned int chan2;
+};
+
+#if IS_ENABLED(CONFIG_ISA_DMA_API)
+
+void comedi_isadma_program(struct comedi_isadma_desc *);
+unsigned int comedi_isadma_disable(unsigned int dma_chan);
+unsigned int comedi_isadma_disable_on_sample(unsigned int dma_chan,
+					     unsigned int size);
+unsigned int comedi_isadma_poll(struct comedi_isadma *);
+void comedi_isadma_set_mode(struct comedi_isadma_desc *, char dma_dir);
+
+struct comedi_isadma *comedi_isadma_alloc(struct comedi_device *,
+					  int n_desc, unsigned int dma_chan1,
+					  unsigned int dma_chan2,
+					  unsigned int maxsize, char dma_dir);
+void comedi_isadma_free(struct comedi_isadma *);
+
+#else	/* !IS_ENABLED(CONFIG_ISA_DMA_API) */
+
+static inline void comedi_isadma_program(struct comedi_isadma_desc *desc)
+{
+}
+
+static inline unsigned int comedi_isadma_disable(unsigned int dma_chan)
+{
+	return 0;
+}
+
+static inline unsigned int
+comedi_isadma_disable_on_sample(unsigned int dma_chan, unsigned int size)
+{
+	return 0;
+}
+
+static inline unsigned int comedi_isadma_poll(struct comedi_isadma *dma)
+{
+	return 0;
+}
+
+static inline void comedi_isadma_set_mode(struct comedi_isadma_desc *desc,
+					  char dma_dir)
+{
+}
+
+static inline struct comedi_isadma *
+comedi_isadma_alloc(struct comedi_device *dev, int n_desc,
+		    unsigned int dma_chan1, unsigned int dma_chan2,
+		    unsigned int maxsize, char dma_dir)
+{
+	return NULL;
+}
+
+static inline void comedi_isadma_free(struct comedi_isadma *dma)
+{
+}
+
+#endif	/* !IS_ENABLED(CONFIG_ISA_DMA_API) */
+
+#endif	/* #ifndef _COMEDI_ISADMA_H */
diff --git a/drivers/staging/comedi/drivers/comedi_parport.c b/drivers/staging/comedi/drivers/comedi_parport.c
index 3bac903..ceef693 100644
--- a/drivers/staging/comedi/drivers/comedi_parport.c
+++ b/drivers/staging/comedi/drivers/comedi_parport.c
@@ -24,7 +24,7 @@
  * Description: Standard PC parallel port
  * Author: ds
  * Status: works in immediate mode
- * Devices: (standard) parallel port [comedi_parport]
+ * Devices: [standard] parallel port (comedi_parport)
  * Updated: Tue, 30 Apr 2002 21:11:45 -0700
  *
  * A cheap and easy way to get a few more digital I/O lines. Steal
diff --git a/drivers/staging/comedi/drivers/dac02.c b/drivers/staging/comedi/drivers/dac02.c
index beb36c8..a6798ad 100644
--- a/drivers/staging/comedi/drivers/dac02.c
+++ b/drivers/staging/comedi/drivers/dac02.c
@@ -24,7 +24,7 @@
 /*
  * Driver: dac02
  * Description: Comedi driver for DAC02 compatible boards
- * Devices: (Keithley Metrabyte) DAC-02 [dac02]
+ * Devices: [Keithley Metrabyte] DAC-02 (dac02)
  * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
  * Updated: Tue, 11 Mar 2014 11:27:19 -0700
  * Status: unknown
diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c
index 20a9f0e..c78c0df 100644
--- a/drivers/staging/comedi/drivers/das08.c
+++ b/drivers/staging/comedi/drivers/das08.c
@@ -1,6 +1,6 @@
 /*
  *  comedi/drivers/das08.c
- *  comedi driver for common DAS08 support (used by ISA/PCI/PCMCIA drivers)
+ *  comedi module for common DAS08 support (used by ISA/PCI/PCMCIA drivers)
  *
  *  COMEDI - Linux Control and Measurement Device Interface
  *  Copyright (C) 2000 David A. Schleef <ds@schleef.org>
@@ -18,21 +18,6 @@
  *  GNU General Public License for more details.
  */
 
-/*
- * Driver: das08
- * Description: DAS-08 compatible boards
- * Devices: various, see das08_isa, das08_cs, and das08_pci drivers
- * Author: Warren Jasper, ds, Frank Hess
- * Updated: Fri, 31 Aug 2012 19:19:06 +0100
- * Status: works
- *
- * This driver is used by the das08_isa, das08_cs, and das08_pci
- * drivers to provide the common support for the DAS-08 hardware.
- *
- * The driver doesn't support asynchronous commands, since the
- * cheap das08 hardware doesn't really support them.
- */
-
 #include <linux/module.h>
 
 #include "../comedidev.h"
diff --git a/drivers/staging/comedi/drivers/das08_isa.c b/drivers/staging/comedi/drivers/das08_isa.c
index e4ba268..2d9a31d 100644
--- a/drivers/staging/comedi/drivers/das08_isa.c
+++ b/drivers/staging/comedi/drivers/das08_isa.c
@@ -21,18 +21,12 @@
 /*
  * Driver: das08_isa
  * Description: DAS-08 ISA/PC-104 compatible boards
- * Devices: (Keithley Metrabyte) DAS08 [isa-das08],
- *	    (ComputerBoards) DAS08 [isa-das08]
- *	    (ComputerBoards) DAS08-PGM [das08-pgm]
- *	    (ComputerBoards) DAS08-PGH [das08-pgh]
- *	    (ComputerBoards) DAS08-PGL [das08-pgl]
- *	    (ComputerBoards) DAS08-AOH [das08-aoh]
- *	    (ComputerBoards) DAS08-AOL [das08-aol]
- *	    (ComputerBoards) DAS08-AOM [das08-aom]
- *	    (ComputerBoards) DAS08/JR-AO [das08/jr-ao]
- *	    (ComputerBoards) DAS08/JR-16-AO [das08jr-16-ao]
- *	    (ComputerBoards) PC104-DAS08 [pc104-das08]
- *	    (ComputerBoards) DAS08/JR/16 [das08jr/16]
+ * Devices: [Keithley Metrabyte] DAS08 (isa-das08),
+ *   [ComputerBoards] DAS08 (isa-das08), DAS08-PGM (das08-pgm),
+ *   DAS08-PGH (das08-pgh), DAS08-PGL (das08-pgl), DAS08-AOH (das08-aoh),
+ *   DAS08-AOL (das08-aol), DAS08-AOM (das08-aom), DAS08/JR-AO (das08/jr-ao),
+ *   DAS08/JR-16-AO (das08jr-16-ao), PC104-DAS08 (pc104-das08),
+ *   DAS08/JR/16 (das08jr/16)
  * Author: Warren Jasper, ds, Frank Hess
  * Updated: Fri, 31 Aug 2012 19:19:06 +0100
  * Status: works
diff --git a/drivers/staging/comedi/drivers/das08_pci.c b/drivers/staging/comedi/drivers/das08_pci.c
index 0987ce55..b2ea10b 100644
--- a/drivers/staging/comedi/drivers/das08_pci.c
+++ b/drivers/staging/comedi/drivers/das08_pci.c
@@ -21,7 +21,7 @@
 /*
  * Driver: das08_pci
  * Description: DAS-08 PCI compatible boards
- * Devices: (ComputerBoards) PCI-DAS08 [pci-das08]
+ * Devices: [ComputerBoards] PCI-DAS08 (pci-das08)
  * Author: Warren Jasper, ds, Frank Hess
  * Updated: Fri, 31 Aug 2012 19:19:06 +0100
  * Status: works
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c
index 2436057..466d4ef 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -22,28 +22,17 @@
  * Driver: das16
  * Description: DAS16 compatible boards
  * Author: Sam Moore, Warren Jasper, ds, Chris Baugher, Frank Hess, Roman Fietze
- * Devices: (Keithley Metrabyte) DAS-16 [das-16]
- *	    (Keithley Metrabyte) DAS-16G [das-16g]
- *	    (Keithley Metrabyte) DAS-16F [das-16f]
- *	    (Keithley Metrabyte) DAS-1201 [das-1201]
- *	    (Keithley Metrabyte) DAS-1202 [das-1202]
- *	    (Keithley Metrabyte) DAS-1401 [das-1401]
- *	    (Keithley Metrabyte) DAS-1402 [das-1402]
- *	    (Keithley Metrabyte) DAS-1601 [das-1601]
- *	    (Keithley Metrabyte) DAS-1602 [das-1602]
- *	    (ComputerBoards) PC104-DAS16/JR [pc104-das16jr]
- *	    (ComputerBoards) PC104-DAS16JR/16 [pc104-das16jr/16]
- *	    (ComputerBoards) CIO-DAS16 [cio-das16]
- *	    (ComputerBoards) CIO-DAS16F [cio-das16/f]
- *	    (ComputerBoards) CIO-DAS16/JR [cio-das16/jr]
- *	    (ComputerBoards) CIO-DAS16JR/16 [cio-das16jr/16]
- *	    (ComputerBoards) CIO-DAS1401/12 [cio-das1401/12]
- *	    (ComputerBoards) CIO-DAS1402/12 [cio-das1402/12]
- *	    (ComputerBoards) CIO-DAS1402/16 [cio-das1402/16]
- *	    (ComputerBoards) CIO-DAS1601/12 [cio-das1601/12]
- *	    (ComputerBoards) CIO-DAS1602/12 [cio-das1602/12]
- *	    (ComputerBoards) CIO-DAS1602/16 [cio-das1602/16]
- *	    (ComputerBoards) CIO-DAS16/330 [cio-das16/330]
+ * Devices: [Keithley Metrabyte] DAS-16 (das-16), DAS-16G (das-16g),
+ *   DAS-16F (das-16f), DAS-1201 (das-1201), DAS-1202 (das-1202),
+ *   DAS-1401 (das-1401), DAS-1402 (das-1402), DAS-1601 (das-1601),
+ *   DAS-1602 (das-1602),
+ *   [ComputerBoards] PC104-DAS16/JR (pc104-das16jr),
+ *   PC104-DAS16JR/16 (pc104-das16jr/16), CIO-DAS16 (cio-das16),
+ *   CIO-DAS16F (cio-das16/f), CIO-DAS16/JR (cio-das16/jr),
+ *   CIO-DAS16JR/16 (cio-das16jr/16), CIO-DAS1401/12 (cio-das1401/12),
+ *   CIO-DAS1402/12 (cio-das1402/12), CIO-DAS1402/16 (cio-das1402/16),
+ *   CIO-DAS1601/12 (cio-das1601/12), CIO-DAS1602/12 (cio-das1602/12),
+ *   CIO-DAS1602/16 (cio-das1602/16), CIO-DAS16/330 (cio-das16/330)
  * Status: works
  * Updated: 2003-10-12
  *
@@ -82,17 +71,14 @@
 
 #include <linux/module.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
 #include <linux/interrupt.h>
 
-#include <asm/dma.h>
-
 #include "../comedidev.h"
 
+#include "comedi_isadma.h"
+#include "comedi_fc.h"
 #include "8253.h"
 #include "8255.h"
-#include "comedi_fc.h"
 
 #define DAS16_DMA_SIZE 0xff00	/*  size in bytes of allocated dma buffer */
 
@@ -451,16 +437,12 @@
 }
 
 struct das16_private_struct {
+	struct comedi_isadma	*dma;
 	unsigned int		clockbase;
 	unsigned int		ctrl_reg;
 	unsigned long		adc_byte_count;
 	unsigned int		divisor1;
 	unsigned int		divisor2;
-	unsigned int		dma_chan;
-	uint16_t		*dma_buffer[2];
-	dma_addr_t		dma_buffer_addr[2];
-	unsigned int		current_buffer;
-	unsigned int		dma_transfer_size;
 	struct comedi_lrange	*user_ai_range_table;
 	struct comedi_lrange	*user_ao_range_table;
 	struct timer_list	timer;
@@ -497,53 +479,17 @@
 	outb(devpriv->ctrl_reg, dev->iobase + DAS16_CTRL_REG);
 }
 
-/* the pc104-das16jr (at least) has problems if the dma
-	transfer is interrupted in the middle of transferring
-	a 16 bit sample, so this function takes care to get
-	an even transfer count after disabling dma
-	channel.
-*/
-static int disable_dma_on_even(struct comedi_device *dev)
-{
-	struct das16_private_struct *devpriv = dev->private;
-	static const int disable_limit = 100;
-	static const int enable_timeout = 100;
-	int residue;
-	int new_residue;
-	int i;
-	int j;
-
-	disable_dma(devpriv->dma_chan);
-	residue = get_dma_residue(devpriv->dma_chan);
-	for (i = 0; i < disable_limit && (residue % 2); ++i) {
-		enable_dma(devpriv->dma_chan);
-		for (j = 0; j < enable_timeout; ++j) {
-			udelay(2);
-			new_residue = get_dma_residue(devpriv->dma_chan);
-			if (new_residue != residue)
-				break;
-		}
-		disable_dma(devpriv->dma_chan);
-		residue = get_dma_residue(devpriv->dma_chan);
-	}
-	if (i == disable_limit) {
-		dev_err(dev->class_dev,
-			"failed to get an even dma transfer, could be trouble\n");
-	}
-	return residue;
-}
-
 static void das16_interrupt(struct comedi_device *dev)
 {
 	struct das16_private_struct *devpriv = dev->private;
 	struct comedi_subdevice *s = dev->read_subdev;
 	struct comedi_async *async = s->async;
 	struct comedi_cmd *cmd = &async->cmd;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
 	unsigned long spin_flags;
-	unsigned long dma_flags;
 	unsigned int nsamples;
 	int num_bytes, residue;
-	int buffer_index;
 
 	spin_lock_irqsave(&dev->spinlock, spin_flags);
 	if (!(devpriv->ctrl_reg & DAS16_CTRL_DMAE)) {
@@ -551,17 +497,21 @@
 		return;
 	}
 
-	dma_flags = claim_dma_lock();
-	clear_dma_ff(devpriv->dma_chan);
-	residue = disable_dma_on_even(dev);
+	/*
+	 * The pc104-das16jr (at least) has problems if the dma
+	 * transfer is interrupted in the middle of transferring
+	 * a 16 bit sample.
+	 */
+	residue = comedi_isadma_disable_on_sample(desc->chan,
+						  comedi_bytes_per_sample(s));
 
 	/*  figure out how many points to read */
-	if (residue > devpriv->dma_transfer_size) {
+	if (residue > desc->size) {
 		dev_err(dev->class_dev, "residue > transfer size!\n");
 		async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
 		num_bytes = 0;
 	} else
-		num_bytes = devpriv->dma_transfer_size - residue;
+		num_bytes = desc->size - residue;
 
 	if (cmd->stop_src == TRIG_COUNT &&
 					num_bytes >= devpriv->adc_byte_count) {
@@ -569,24 +519,21 @@
 		async->events |= COMEDI_CB_EOA;
 	}
 
-	buffer_index = devpriv->current_buffer;
-	devpriv->current_buffer = (devpriv->current_buffer + 1) % 2;
+	dma->cur_dma = 1 - dma->cur_dma;
 	devpriv->adc_byte_count -= num_bytes;
 
-	/*  re-enable  dma */
+	/* re-enable dma */
 	if ((async->events & COMEDI_CB_EOA) == 0) {
-		set_dma_addr(devpriv->dma_chan,
-			     devpriv->dma_buffer_addr[devpriv->current_buffer]);
-		set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size);
-		enable_dma(devpriv->dma_chan);
+		struct comedi_isadma_desc *nxt_desc = &dma->desc[dma->cur_dma];
+
+		nxt_desc->size = nxt_desc->maxsize;
+		comedi_isadma_program(nxt_desc);
 	}
-	release_dma_lock(dma_flags);
 
 	spin_unlock_irqrestore(&dev->spinlock, spin_flags);
 
 	nsamples = comedi_bytes_to_samples(s, num_bytes);
-	comedi_buf_write_samples(s, devpriv->dma_buffer[buffer_index],
-				 nsamples);
+	comedi_buf_write_samples(s, desc->virt_addr, nsamples);
 
 	comedi_handle_events(dev, s);
 }
@@ -757,6 +704,8 @@
 {
 	const struct das16_board *board = dev->board_ptr;
 	struct das16_private_struct *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[0];
 	struct comedi_async *async = s->async;
 	struct comedi_cmd *cmd = &async->cmd;
 	unsigned int byte;
@@ -805,19 +754,10 @@
 	}
 	outb(byte, dev->iobase + DAS16_PACER_REG);
 
-	/*  set up dma transfer */
-	flags = claim_dma_lock();
-	disable_dma(devpriv->dma_chan);
-	/* clear flip-flop to make sure 2-byte registers for
-	 * count and address get set correctly */
-	clear_dma_ff(devpriv->dma_chan);
-	devpriv->current_buffer = 0;
-	set_dma_addr(devpriv->dma_chan,
-		     devpriv->dma_buffer_addr[devpriv->current_buffer]);
-	devpriv->dma_transfer_size = DAS16_DMA_SIZE;
-	set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size);
-	enable_dma(devpriv->dma_chan);
-	release_dma_lock(flags);
+	/* set up dma transfer */
+	dma->cur_dma = 0;
+	desc->size = desc->maxsize;
+	comedi_isadma_program(desc);
 
 	/*  set up timer */
 	spin_lock_irqsave(&dev->spinlock, flags);
@@ -837,12 +777,13 @@
 static int das16_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct das16_private_struct *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
 	unsigned long flags;
 
 	spin_lock_irqsave(&dev->spinlock, flags);
 
 	das16_ai_disable(dev);
-	disable_dma(devpriv->dma_chan);
+	comedi_isadma_disable(dma->chan);
 
 	/*  disable SW timer */
 	if (devpriv->timer_running) {
@@ -1001,6 +942,35 @@
 	outb(0, dev->iobase + DAS16_TIMER_BASE_REG + i8254_control_reg);
 }
 
+static void das16_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
+{
+	struct das16_private_struct *devpriv = dev->private;
+
+	/* only DMA channels 3 and 1 are valid */
+	if (!(dma_chan == 1 || dma_chan == 3))
+		return;
+
+	/* DMA uses two buffers */
+	devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
+					   DAS16_DMA_SIZE, COMEDI_ISADMA_READ);
+	if (devpriv->dma) {
+		init_timer(&devpriv->timer);
+		devpriv->timer.function = das16_timer_interrupt;
+		devpriv->timer.data = (unsigned long)dev;
+	}
+}
+
+static void das16_free_dma(struct comedi_device *dev)
+{
+	struct das16_private_struct *devpriv = dev->private;
+
+	if (devpriv) {
+		if (devpriv->timer.data)
+			del_timer_sync(&devpriv->timer);
+		comedi_isadma_free(devpriv->dma);
+	}
+}
+
 static int das16_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
 	const struct das16_board *board = dev->board_ptr;
@@ -1008,7 +978,6 @@
 	struct comedi_subdevice *s;
 	struct comedi_lrange *lrange;
 	struct comedi_krange *krange;
-	unsigned int dma_chan = it->options[2];
 	unsigned int status;
 	int ret;
 
@@ -1063,39 +1032,7 @@
 			devpriv->clockbase = I8254_OSC_BASE_1MHZ;
 	}
 
-	/* initialize dma */
-	if (dma_chan == 1 || dma_chan == 3) {
-		unsigned long flags;
-		int i;
-
-		if (request_dma(dma_chan, dev->board_name)) {
-			dev_err(dev->class_dev,
-				"failed to request dma channel %i\n",
-				dma_chan);
-			return -EINVAL;
-		}
-		devpriv->dma_chan = dma_chan;
-
-		/* allocate dma buffers */
-		for (i = 0; i < 2; i++) {
-			void *p;
-
-			p = pci_alloc_consistent(NULL, DAS16_DMA_SIZE,
-						 &devpriv->dma_buffer_addr[i]);
-			if (!p)
-				return -ENOMEM;
-			devpriv->dma_buffer[i] = p;
-		}
-
-		flags = claim_dma_lock();
-		disable_dma(devpriv->dma_chan);
-		set_dma_mode(devpriv->dma_chan, DMA_MODE_READ);
-		release_dma_lock(flags);
-
-		init_timer(&devpriv->timer);
-		devpriv->timer.function = das16_timer_interrupt;
-		devpriv->timer.data = (unsigned long)dev;
-	}
+	das16_alloc_dma(dev, it->options[2]);
 
 	/* get any user-defined input range */
 	if (board->ai_pg == das16_pg_none &&
@@ -1157,7 +1094,7 @@
 		s->range_table	= das16_ai_bip_lranges[board->ai_pg];
 	}
 	s->insn_read	= das16_ai_insn_read;
-	if (devpriv->dma_chan) {
+	if (devpriv->dma) {
 		dev->read_subdev = s;
 		s->subdev_flags	|= SDF_CMD_READ;
 		s->do_cmdtest	= das16_cmd_test;
@@ -1230,23 +1167,11 @@
 {
 	const struct das16_board *board = dev->board_ptr;
 	struct das16_private_struct *devpriv = dev->private;
-	int i;
 
 	if (devpriv) {
-		if (devpriv->timer.data)
-			del_timer_sync(&devpriv->timer);
 		if (dev->iobase)
 			das16_reset(dev);
-
-		for (i = 0; i < 2; i++) {
-			if (devpriv->dma_buffer[i])
-				pci_free_consistent(NULL, DAS16_DMA_SIZE,
-						    devpriv->dma_buffer[i],
-						    devpriv->
-						    dma_buffer_addr[i]);
-		}
-		if (devpriv->dma_chan)
-			free_dma(devpriv->dma_chan);
+		das16_free_dma(dev);
 		kfree(devpriv->user_ai_range_table);
 		kfree(devpriv->user_ao_range_table);
 
diff --git a/drivers/staging/comedi/drivers/das1800.c b/drivers/staging/comedi/drivers/das1800.c
index be825d2..381ae94 100644
--- a/drivers/staging/comedi/drivers/das1800.c
+++ b/drivers/staging/comedi/drivers/das1800.c
@@ -98,12 +98,12 @@
 #include <linux/interrupt.h>
 #include <linux/slab.h>
 #include <linux/io.h>
+
 #include "../comedidev.h"
 
-#include <asm/dma.h>
-
-#include "8253.h"
+#include "comedi_isadma.h"
 #include "comedi_fc.h"
+#include "8253.h"
 
 /* misc. defines */
 #define DAS1800_SIZE           16	/* uses 16 io addresses */
@@ -421,19 +421,14 @@
 };
 
 struct das1800_private {
+	struct comedi_isadma *dma;
 	unsigned int divisor1;	/* value to load into board's counter 1 for timed conversions */
 	unsigned int divisor2;	/* value to load into board's counter 2 for timed conversions */
 	int irq_dma_bits;	/* bits for control register b */
 	/* dma bits for control register b, stored so that dma can be
 	 * turned on and off */
 	int dma_bits;
-	unsigned int dma0;	/* dma channels used */
-	unsigned int dma1;
-	unsigned int dma_current;	/* dma channel currently in use */
-	uint16_t *ai_buf0;	/* pointers to dma buffers */
-	uint16_t *ai_buf1;
-	uint16_t *dma_current_buf;	/* pointer to dma buffer currently being used */
-	unsigned int dma_transfer_size;	/* size of transfer currently used, in bytes */
+	uint16_t *fifo_buf;	/* bounce buffer for analog input FIFO */
 	unsigned long iobase2;	/* secondary io address used for analog out on 'ao' boards */
 	unsigned short ao_update_bits;	/* remembers the last write to the
 					 * 'update' dac */
@@ -480,9 +475,9 @@
 	struct das1800_private *devpriv = dev->private;
 	unsigned int nsamples = comedi_nsamples_left(s, FIFO_SIZE / 2);
 
-	insw(dev->iobase + DAS1800_FIFO, devpriv->ai_buf0, nsamples);
-	munge_data(dev, devpriv->ai_buf0, nsamples);
-	comedi_buf_write_samples(s, devpriv->ai_buf0, nsamples);
+	insw(dev->iobase + DAS1800_FIFO, devpriv->fifo_buf, nsamples);
+	munge_data(dev, devpriv->fifo_buf, nsamples);
+	comedi_buf_write_samples(s, devpriv->fifo_buf, nsamples);
 }
 
 static void das1800_handle_fifo_not_empty(struct comedi_device *dev,
@@ -508,29 +503,21 @@
 	}
 }
 
-/* Utility function used by das1800_flush_dma() and das1800_handle_dma().
- * Assumes dma lock is held */
+/* Utility function used by das1800_flush_dma() and das1800_handle_dma() */
 static void das1800_flush_dma_channel(struct comedi_device *dev,
 				      struct comedi_subdevice *s,
-				      unsigned int channel, uint16_t *buffer)
+				      struct comedi_isadma_desc *desc)
 {
-	struct das1800_private *devpriv = dev->private;
-	unsigned int nbytes;
+	unsigned int residue = comedi_isadma_disable(desc->chan);
+	unsigned int nbytes = desc->size - residue;
 	unsigned int nsamples;
 
-	disable_dma(channel);
-
-	/* clear flip-flop to make sure 2-byte registers
-	 * get set correctly */
-	clear_dma_ff(channel);
-
 	/*  figure out how many points to read */
-	nbytes = devpriv->dma_transfer_size - get_dma_residue(channel);
 	nsamples = comedi_bytes_to_samples(s, nbytes);
 	nsamples = comedi_nsamples_left(s, nsamples);
 
-	munge_data(dev, buffer, nsamples);
-	comedi_buf_write_samples(s, buffer, nsamples);
+	munge_data(dev, desc->virt_addr, nsamples);
+	comedi_buf_write_samples(s, desc->virt_addr, nsamples);
 }
 
 /* flushes remaining data from board when external trigger has stopped acquisition
@@ -539,28 +526,19 @@
 			      struct comedi_subdevice *s)
 {
 	struct das1800_private *devpriv = dev->private;
-	unsigned long flags;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
 	const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL;
 
-	flags = claim_dma_lock();
-	das1800_flush_dma_channel(dev, s, devpriv->dma_current,
-				  devpriv->dma_current_buf);
+	das1800_flush_dma_channel(dev, s, desc);
 
 	if (dual_dma) {
 		/*  switch to other channel and flush it */
-		if (devpriv->dma_current == devpriv->dma0) {
-			devpriv->dma_current = devpriv->dma1;
-			devpriv->dma_current_buf = devpriv->ai_buf1;
-		} else {
-			devpriv->dma_current = devpriv->dma0;
-			devpriv->dma_current_buf = devpriv->ai_buf0;
-		}
-		das1800_flush_dma_channel(dev, s, devpriv->dma_current,
-					  devpriv->dma_current_buf);
+		dma->cur_dma = 1 - dma->cur_dma;
+		desc = &dma->desc[dma->cur_dma];
+		das1800_flush_dma_channel(dev, s, desc);
 	}
 
-	release_dma_lock(flags);
-
 	/*  get any remaining samples in fifo */
 	das1800_handle_fifo_not_empty(dev, s);
 }
@@ -569,47 +547,41 @@
 			       struct comedi_subdevice *s, unsigned int status)
 {
 	struct das1800_private *devpriv = dev->private;
-	unsigned long flags;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
 	const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL;
 
-	flags = claim_dma_lock();
-	das1800_flush_dma_channel(dev, s, devpriv->dma_current,
-				  devpriv->dma_current_buf);
-	/*  re-enable  dma channel */
-	set_dma_addr(devpriv->dma_current,
-		     virt_to_bus(devpriv->dma_current_buf));
-	set_dma_count(devpriv->dma_current, devpriv->dma_transfer_size);
-	enable_dma(devpriv->dma_current);
-	release_dma_lock(flags);
+	das1800_flush_dma_channel(dev, s, desc);
+
+	/* re-enable dma channel */
+	comedi_isadma_program(desc);
 
 	if (status & DMATC) {
 		/*  clear DMATC interrupt bit */
 		outb(CLEAR_INTR_MASK & ~DMATC, dev->iobase + DAS1800_STATUS);
 		/*  switch dma channels for next time, if appropriate */
-		if (dual_dma) {
-			/*  read data from the other channel next time */
-			if (devpriv->dma_current == devpriv->dma0) {
-				devpriv->dma_current = devpriv->dma1;
-				devpriv->dma_current_buf = devpriv->ai_buf1;
-			} else {
-				devpriv->dma_current = devpriv->dma0;
-				devpriv->dma_current_buf = devpriv->ai_buf0;
-			}
-		}
+		if (dual_dma)
+			dma->cur_dma = 1 - dma->cur_dma;
 	}
 }
 
 static int das1800_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct das1800_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc;
+	int i;
 
 	outb(0x0, dev->iobase + DAS1800_STATUS);	/* disable conversions */
 	outb(0x0, dev->iobase + DAS1800_CONTROL_B);	/* disable interrupts and dma */
 	outb(0x0, dev->iobase + DAS1800_CONTROL_A);	/* disable and clear fifo and stop triggering */
-	if (devpriv->dma0)
-		disable_dma(devpriv->dma0);
-	if (devpriv->dma1)
-		disable_dma(devpriv->dma1);
+
+	for (i = 0; i < 2; i++) {
+		desc = &dma->desc[i];
+		if (desc->chan)
+			comedi_isadma_disable(desc->chan);
+	}
+
 	return 0;
 }
 
@@ -963,79 +935,64 @@
 	}
 }
 
-/* utility function that suggests a dma transfer size based on the conversion period 'ns' */
-static unsigned int suggest_transfer_size(const struct comedi_cmd *cmd)
+static unsigned int das1800_ai_transfer_size(struct comedi_device *dev,
+					     struct comedi_subdevice *s,
+					     unsigned int maxbytes,
+					     unsigned int ns)
 {
-	unsigned int size = DMA_BUF_SIZE;
-	static const int sample_size = 2;	/*  size in bytes of one sample from board */
-	unsigned int fill_time = 300000000;	/*  target time in nanoseconds for filling dma buffer */
-	unsigned int max_size;	/*  maximum size we will allow for a transfer */
+	struct comedi_cmd *cmd = &s->async->cmd;
+	unsigned int max_samples = comedi_bytes_to_samples(s, maxbytes);
+	unsigned int samples;
 
-	/*  make dma buffer fill in 0.3 seconds for timed modes */
+	samples = max_samples;
+
+	/* for timed modes, make dma buffer fill in 'ns' time */
 	switch (cmd->scan_begin_src) {
-	case TRIG_FOLLOW:	/*  not in burst mode */
+	case TRIG_FOLLOW:	/* not in burst mode */
 		if (cmd->convert_src == TRIG_TIMER)
-			size = (fill_time / cmd->convert_arg) * sample_size;
+			samples = ns / cmd->convert_arg;
 		break;
 	case TRIG_TIMER:
-		size = (fill_time / (cmd->scan_begin_arg * cmd->chanlist_len)) *
-		    sample_size;
-		break;
-	default:
-		size = DMA_BUF_SIZE;
+		samples = ns / (cmd->scan_begin_arg * cmd->chanlist_len);
 		break;
 	}
 
-	/*  set a minimum and maximum size allowed */
-	max_size = DMA_BUF_SIZE;
-	/*  if we are taking limited number of conversions, limit transfer size to that */
-	if (cmd->stop_src == TRIG_COUNT &&
-	    cmd->stop_arg * cmd->chanlist_len * sample_size < max_size)
-		max_size = cmd->stop_arg * cmd->chanlist_len * sample_size;
+	/* limit samples to what is remaining in the command */
+	samples = comedi_nsamples_left(s, samples);
 
-	if (size > max_size)
-		size = max_size;
-	if (size < sample_size)
-		size = sample_size;
+	if (samples > max_samples)
+		samples = max_samples;
+	if (samples < 1)
+		samples = 1;
 
-	return size;
+	return comedi_samples_to_bytes(s, samples);
 }
 
-/* sets up dma */
-static void setup_dma(struct comedi_device *dev, const struct comedi_cmd *cmd)
+static void das1800_ai_setup_dma(struct comedi_device *dev,
+				 struct comedi_subdevice *s)
 {
 	struct das1800_private *devpriv = dev->private;
-	unsigned long lock_flags;
-	const int dual_dma = devpriv->irq_dma_bits & DMA_DUAL;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[0];
+	unsigned int bytes;
 
 	if ((devpriv->irq_dma_bits & DMA_ENABLED) == 0)
 		return;
 
-	/* determine a reasonable dma transfer size */
-	devpriv->dma_transfer_size = suggest_transfer_size(cmd);
-	lock_flags = claim_dma_lock();
-	disable_dma(devpriv->dma0);
-	/* clear flip-flop to make sure 2-byte registers for
-	 * count and address get set correctly */
-	clear_dma_ff(devpriv->dma0);
-	set_dma_addr(devpriv->dma0, virt_to_bus(devpriv->ai_buf0));
-	/*  set appropriate size of transfer */
-	set_dma_count(devpriv->dma0, devpriv->dma_transfer_size);
-	devpriv->dma_current = devpriv->dma0;
-	devpriv->dma_current_buf = devpriv->ai_buf0;
-	enable_dma(devpriv->dma0);
-	/*  set up dual dma if appropriate */
-	if (dual_dma) {
-		disable_dma(devpriv->dma1);
-		/* clear flip-flop to make sure 2-byte registers for
-		 * count and address get set correctly */
-		clear_dma_ff(devpriv->dma1);
-		set_dma_addr(devpriv->dma1, virt_to_bus(devpriv->ai_buf1));
-		/*  set appropriate size of transfer */
-		set_dma_count(devpriv->dma1, devpriv->dma_transfer_size);
-		enable_dma(devpriv->dma1);
+	dma->cur_dma = 0;
+
+	/* determine a dma transfer size to fill buffer in 0.3 sec */
+	bytes = das1800_ai_transfer_size(dev, s, desc->maxsize, 300000000);
+
+	desc->size = bytes;
+	comedi_isadma_program(desc);
+
+	/* set up dual dma if appropriate */
+	if (devpriv->irq_dma_bits & DMA_DUAL) {
+		desc = &dma->desc[1];
+		desc->size = bytes;
+		comedi_isadma_program(desc);
 	}
-	release_dma_lock(lock_flags);
 }
 
 /* programs channel/gain list into card */
@@ -1097,7 +1054,7 @@
 	/* setup card and start */
 	program_chanlist(dev, cmd);
 	das1800_setup_counters(dev, cmd);
-	setup_dma(dev, cmd);
+	das1800_ai_setup_dma(dev, s);
 	outb(control_c, dev->iobase + DAS1800_CONTROL_C);
 	/*  set conversion rate and length for burst mode */
 	if (control_c & BMDE) {
@@ -1234,79 +1191,57 @@
 	return insn->n;
 }
 
-static int das1800_init_dma(struct comedi_device *dev, unsigned int dma0,
-			    unsigned int dma1)
+static void das1800_init_dma(struct comedi_device *dev,
+			     struct comedi_devconfig *it)
 {
 	struct das1800_private *devpriv = dev->private;
-	unsigned long flags;
+	unsigned int *dma_chan;
 
-	/*  need an irq to do dma */
-	if (dev->irq && dma0) {
-		/* encode dma0 and dma1 into 2 digit hexadecimal for switch */
-		switch ((dma0 & 0x7) | (dma1 << 4)) {
-		case 0x5:	/*  dma0 == 5 */
-			devpriv->dma_bits |= DMA_CH5;
-			break;
-		case 0x6:	/*  dma0 == 6 */
-			devpriv->dma_bits |= DMA_CH6;
-			break;
-		case 0x7:	/*  dma0 == 7 */
-			devpriv->dma_bits |= DMA_CH7;
-			break;
-		case 0x65:	/*  dma0 == 5, dma1 == 6 */
-			devpriv->dma_bits |= DMA_CH5_CH6;
-			break;
-		case 0x76:	/*  dma0 == 6, dma1 == 7 */
-			devpriv->dma_bits |= DMA_CH6_CH7;
-			break;
-		case 0x57:	/*  dma0 == 7, dma1 == 5 */
-			devpriv->dma_bits |= DMA_CH7_CH5;
-			break;
-		default:
-			dev_err(dev->class_dev,
-				"only supports dma channels 5 through 7\n");
-			dev_err(dev->class_dev,
-				"Dual dma only allows the following combinations:\n");
-			dev_err(dev->class_dev,
-				"dma 5,6 / 6,7 / or 7,5\n");
-			return -EINVAL;
-		}
-		if (request_dma(dma0, dev->driver->driver_name)) {
-			dev_err(dev->class_dev,
-				"failed to allocate dma channel %i\n", dma0);
-			return -EINVAL;
-		}
-		devpriv->dma0 = dma0;
-		devpriv->dma_current = dma0;
-		if (dma1) {
-			if (request_dma(dma1, dev->driver->driver_name)) {
-				dev_err(dev->class_dev,
-					"failed to allocate dma channel %i\n",
-					dma1);
-				return -EINVAL;
-			}
-			devpriv->dma1 = dma1;
-		}
-		devpriv->ai_buf0 = kmalloc(DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA);
-		if (devpriv->ai_buf0 == NULL)
-			return -ENOMEM;
-		devpriv->dma_current_buf = devpriv->ai_buf0;
-		if (dma1) {
-			devpriv->ai_buf1 =
-			    kmalloc(DMA_BUF_SIZE, GFP_KERNEL | GFP_DMA);
-			if (devpriv->ai_buf1 == NULL)
-				return -ENOMEM;
-		}
-		flags = claim_dma_lock();
-		disable_dma(devpriv->dma0);
-		set_dma_mode(devpriv->dma0, DMA_MODE_READ);
-		if (dma1) {
-			disable_dma(devpriv->dma1);
-			set_dma_mode(devpriv->dma1, DMA_MODE_READ);
-		}
-		release_dma_lock(flags);
+	/*
+	 * it->options[2] is DMA channel 0
+	 * it->options[3] is DMA channel 1
+	 *
+	 * Encode the DMA channels into 2 digit hexadecimal for switch.
+	 */
+	dma_chan = &it->options[2];
+
+	switch ((dma_chan[0] & 0x7) | (dma_chan[1] << 4)) {
+	case 0x5:	/*  dma0 == 5 */
+		devpriv->dma_bits = DMA_CH5;
+		break;
+	case 0x6:	/*  dma0 == 6 */
+		devpriv->dma_bits = DMA_CH6;
+		break;
+	case 0x7:	/*  dma0 == 7 */
+		devpriv->dma_bits = DMA_CH7;
+		break;
+	case 0x65:	/*  dma0 == 5, dma1 == 6 */
+		devpriv->dma_bits = DMA_CH5_CH6;
+		break;
+	case 0x76:	/*  dma0 == 6, dma1 == 7 */
+		devpriv->dma_bits = DMA_CH6_CH7;
+		break;
+	case 0x57:	/*  dma0 == 7, dma1 == 5 */
+		devpriv->dma_bits = DMA_CH7_CH5;
+		break;
+	default:
+		return;
 	}
-	return 0;
+
+	/* DMA can use 1 or 2 buffers, each with a separate channel */
+	devpriv->dma = comedi_isadma_alloc(dev, dma_chan[1] ? 2 : 1,
+					   dma_chan[0], dma_chan[1],
+					   DMA_BUF_SIZE, COMEDI_ISADMA_READ);
+	if (!devpriv->dma)
+		devpriv->dma_bits = 0;
+}
+
+static void das1800_free_dma(struct comedi_device *dev)
+{
+	struct das1800_private *devpriv = dev->private;
+
+	if (devpriv)
+		comedi_isadma_free(devpriv->dma);
 }
 
 static int das1800_probe(struct comedi_device *dev)
@@ -1374,8 +1309,6 @@
 	struct das1800_private *devpriv;
 	struct comedi_subdevice *s;
 	unsigned int irq = it->options[1];
-	unsigned int dma0 = it->options[2];
-	unsigned int dma1 = it->options[3];
 	int board;
 	int ret;
 
@@ -1437,16 +1370,13 @@
 		}
 	}
 
-	ret = das1800_init_dma(dev, dma0, dma1);
-	if (ret < 0)
-		return ret;
+	/* an irq and one dma channel is required to use dma */
+	if (dev->irq & it->options[2])
+		das1800_init_dma(dev, it);
 
-	if (devpriv->ai_buf0 == NULL) {
-		devpriv->ai_buf0 =
-		    kmalloc(FIFO_SIZE * sizeof(uint16_t), GFP_KERNEL);
-		if (devpriv->ai_buf0 == NULL)
-			return -ENOMEM;
-	}
+	devpriv->fifo_buf = kmalloc(FIFO_SIZE * sizeof(uint16_t), GFP_KERNEL);
+	if (!devpriv->fifo_buf)
+		return -ENOMEM;
 
 	ret = comedi_alloc_subdevices(dev, 4);
 	if (ret)
@@ -1523,13 +1453,9 @@
 {
 	struct das1800_private *devpriv = dev->private;
 
+	das1800_free_dma(dev);
 	if (devpriv) {
-		if (devpriv->dma0)
-			free_dma(devpriv->dma0);
-		if (devpriv->dma1)
-			free_dma(devpriv->dma1);
-		kfree(devpriv->ai_buf0);
-		kfree(devpriv->ai_buf1);
+		kfree(devpriv->fifo_buf);
 		if (devpriv->iobase2)
 			release_region(devpriv->iobase2, DAS1800_SIZE);
 	}
diff --git a/drivers/staging/comedi/drivers/das6402.c b/drivers/staging/comedi/drivers/das6402.c
index 780f4f6..b8755b5 100644
--- a/drivers/staging/comedi/drivers/das6402.c
+++ b/drivers/staging/comedi/drivers/das6402.c
@@ -20,8 +20,8 @@
 /*
  * Driver: das6402
  * Description: Keithley Metrabyte DAS6402 (& compatibles)
- * Devices: (Keithley Metrabyte) DAS6402-12 (das6402-12)
- *	    (Keithley Metrabyte) DAS6402-16 (das6402-16)
+ * Devices: [Keithley Metrabyte] DAS6402-12 (das6402-12),
+ *   DAS6402-16 (das6402-16)
  * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
  * Updated: Fri, 14 Mar 2014 10:18:43 -0700
  * Status: unknown
diff --git a/drivers/staging/comedi/drivers/dmm32at.c b/drivers/staging/comedi/drivers/dmm32at.c
index 6df298a..1af0066 100644
--- a/drivers/staging/comedi/drivers/dmm32at.c
+++ b/drivers/staging/comedi/drivers/dmm32at.c
@@ -19,7 +19,7 @@
 /*
  * Driver: dmm32at
  * Description: Diamond Systems Diamond-MM-32-AT
- * Devices: (Diamond Systems) Diamond-MM-32-AT [dmm32at]
+ * Devices: [Diamond Systems] Diamond-MM-32-AT (dmm32at)
  * Author: Perry J. Piplani <perry.j.piplani@nasa.gov>
  * Updated: Fri Jun  4 09:13:24 CDT 2004
  * Status: experimental
@@ -365,7 +365,7 @@
 	/* enable the ai conversion interrupt and the clock to start scans */
 	outb(DMM32AT_INTCLK_ADINT |
 	     DMM32AT_INTCLK_CLKEN | DMM32AT_INTCLK_CLKSEL,
-             dev->iobase + DMM32AT_INTCLK_REG);
+	     dev->iobase + DMM32AT_INTCLK_REG);
 }
 
 static int dmm32at_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
diff --git a/drivers/staging/comedi/drivers/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c
index 2be98bb..051dfb2 100644
--- a/drivers/staging/comedi/drivers/dt282x.c
+++ b/drivers/staging/comedi/drivers/dt282x.c
@@ -20,22 +20,12 @@
  * Driver: dt282x
  * Description: Data Translation DT2821 series (including DT-EZ)
  * Author: ds
- * Devices: (Data Translation) DT2821 [dt2821]
- *	    (Data Translation) DT2821-F-16SE [dt2821-f]
- *	    (Data Translation) DT2821-F-8DI [dt2821-f]
- *	    (Data Translation) DT2821-G-16SE [dt2821-g]
- *	    (Data Translation) DT2821-G-8DI [dt2821-g]
- *	    (Data Translation) DT2823 [dt2823]
- *	    (Data Translation) DT2824-PGH [dt2824-pgh]
- *	    (Data Translation) DT2824-PGL [dt2824-pgl]
- *	    (Data Translation) DT2825 [dt2825]
- *	    (Data Translation) DT2827 [dt2827]
- *	    (Data Translation) DT2828 [dt2828]
- *	    (Data Translation) DT2928 [dt2829]
- *	    (Data Translation) DT21-EZ [dt21-ez]
- *	    (Data Translation) DT23-EZ [dt23-ez]
- *	    (Data Translation) DT24-EZ [dt24-ez]
- *	    (Data Translation) DT24-EZ-PGL [dt24-ez-pgl]
+ * Devices: [Data Translation] DT2821 (dt2821), DT2821-F-16SE (dt2821-f),
+ *   DT2821-F-8DI (dt2821-f), DT2821-G-16SE (dt2821-g),
+ *   DT2821-G-8DI (dt2821-g), DT2823 (dt2823), DT2824-PGH (dt2824-pgh),
+ *   DT2824-PGL (dt2824-pgl), DT2825 (dt2825), DT2827 (dt2827),
+ *   DT2828 (dt2828), DT2928 (dt2829), DT21-EZ (dt21-ez), DT23-EZ (dt23-ez),
+ *   DT24-EZ (dt24-ez), DT24-EZ-PGL (dt24-ez-pgl)
  * Status: complete
  * Updated: Wed, 22 Aug 2001 17:11:34 -0700
  *
@@ -66,15 +56,14 @@
  */
 
 #include <linux/module.h>
-#include "../comedidev.h"
-
 #include <linux/delay.h>
 #include <linux/gfp.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 
-#include <asm/dma.h>
+#include "../comedidev.h"
 
+#include "comedi_isadma.h"
 #include "comedi_fc.h"
 
 /*
@@ -311,55 +300,36 @@
 };
 
 struct dt282x_private {
+	struct comedi_isadma *dma;
 	unsigned int ad_2scomp:1;
-
 	unsigned int divisor;
-
 	int dacsr;	/* software copies of registers */
 	int adcsr;
 	int supcsr;
-
 	int ntrig;
 	int nread;
-
-	struct {
-		int chan;
-		unsigned short *buf;	/* DMA buffer */
-		int size;	/* size of current transfer */
-	} dma[2];
-	int dma_maxsize;	/* max size of DMA transfer (in bytes) */
-	int current_dma_index;
 	int dma_dir;
 };
 
 static int dt282x_prep_ai_dma(struct comedi_device *dev, int dma_index, int n)
 {
 	struct dt282x_private *devpriv = dev->private;
-	int dma_chan;
-	unsigned long dma_ptr;
-	unsigned long flags;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma_index];
 
 	if (!devpriv->ntrig)
 		return 0;
 
 	if (n == 0)
-		n = devpriv->dma_maxsize;
+		n = desc->maxsize;
 	if (n > devpriv->ntrig * 2)
 		n = devpriv->ntrig * 2;
 	devpriv->ntrig -= n / 2;
 
-	devpriv->dma[dma_index].size = n;
-	dma_chan = devpriv->dma[dma_index].chan;
-	dma_ptr = virt_to_bus(devpriv->dma[dma_index].buf);
+	desc->size = n;
+	comedi_isadma_set_mode(desc, devpriv->dma_dir);
 
-	set_dma_mode(dma_chan, DMA_MODE_READ);
-	flags = claim_dma_lock();
-	clear_dma_ff(dma_chan);
-	set_dma_addr(dma_chan, dma_ptr);
-	set_dma_count(dma_chan, n);
-	release_dma_lock(flags);
-
-	enable_dma(dma_chan);
+	comedi_isadma_program(desc);
 
 	return n;
 }
@@ -367,22 +337,13 @@
 static int dt282x_prep_ao_dma(struct comedi_device *dev, int dma_index, int n)
 {
 	struct dt282x_private *devpriv = dev->private;
-	int dma_chan;
-	unsigned long dma_ptr;
-	unsigned long flags;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma_index];
 
-	devpriv->dma[dma_index].size = n;
-	dma_chan = devpriv->dma[dma_index].chan;
-	dma_ptr = virt_to_bus(devpriv->dma[dma_index].buf);
+	desc->size = n;
+	comedi_isadma_set_mode(desc, devpriv->dma_dir);
 
-	set_dma_mode(dma_chan, DMA_MODE_WRITE);
-	flags = claim_dma_lock();
-	clear_dma_ff(dma_chan);
-	set_dma_addr(dma_chan, dma_ptr);
-	set_dma_count(dma_chan, n);
-	release_dma_lock(flags);
-
-	enable_dma(dma_chan);
+	comedi_isadma_program(desc);
 
 	return n;
 }
@@ -390,9 +351,14 @@
 static void dt282x_disable_dma(struct comedi_device *dev)
 {
 	struct dt282x_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc;
+	int i;
 
-	disable_dma(devpriv->dma[0].chan);
-	disable_dma(devpriv->dma[1].chan);
+	for (i = 0; i < 2; i++) {
+		desc = &dma->desc[i];
+		comedi_isadma_disable(desc->chan);
+	}
 }
 
 static unsigned int dt282x_ns_to_timer(unsigned int *ns, unsigned int flags)
@@ -454,11 +420,12 @@
 					int cur_dma)
 {
 	struct dt282x_private *devpriv = dev->private;
-	void *ptr = devpriv->dma[cur_dma].buf;
-	unsigned int nsamples = comedi_bytes_to_samples(s, devpriv->dma_maxsize);
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[cur_dma];
+	unsigned int nsamples = comedi_bytes_to_samples(s, desc->maxsize);
 	unsigned int nbytes;
 
-	nbytes = comedi_buf_read_samples(s, ptr, nsamples);
+	nbytes = comedi_buf_read_samples(s, desc->virt_addr, nsamples);
 	if (nbytes)
 		dt282x_prep_ao_dma(dev, cur_dma, nbytes);
 	else
@@ -471,39 +438,37 @@
 				    struct comedi_subdevice *s)
 {
 	struct dt282x_private *devpriv = dev->private;
-	int cur_dma = devpriv->current_dma_index;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
 
 	outw(devpriv->supcsr | DT2821_SUPCSR_CLRDMADNE,
 	     dev->iobase + DT2821_SUPCSR_REG);
 
-	disable_dma(devpriv->dma[cur_dma].chan);
+	comedi_isadma_disable(desc->chan);
 
-	devpriv->current_dma_index = 1 - cur_dma;
-
-	if (!dt282x_ao_setup_dma(dev, s, cur_dma))
+	if (!dt282x_ao_setup_dma(dev, s, dma->cur_dma))
 		s->async->events |= COMEDI_CB_OVERFLOW;
+
+	dma->cur_dma = 1 - dma->cur_dma;
 }
 
 static void dt282x_ai_dma_interrupt(struct comedi_device *dev,
 				    struct comedi_subdevice *s)
 {
 	struct dt282x_private *devpriv = dev->private;
-	int cur_dma = devpriv->current_dma_index;
-	void *ptr = devpriv->dma[cur_dma].buf;
-	int size = devpriv->dma[cur_dma].size;
-	unsigned int nsamples = comedi_bytes_to_samples(s, size);
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
+	unsigned int nsamples = comedi_bytes_to_samples(s, desc->size);
 	int ret;
 
 	outw(devpriv->supcsr | DT2821_SUPCSR_CLRDMADNE,
 	     dev->iobase + DT2821_SUPCSR_REG);
 
-	disable_dma(devpriv->dma[cur_dma].chan);
+	comedi_isadma_disable(desc->chan);
 
-	devpriv->current_dma_index = 1 - cur_dma;
-
-	dt282x_munge(dev, s, ptr, size);
-	ret = comedi_buf_write_samples(s, ptr, nsamples);
-	if (ret != size)
+	dt282x_munge(dev, s, desc->virt_addr, desc->size);
+	ret = comedi_buf_write_samples(s, desc->virt_addr, nsamples);
+	if (ret != desc->size)
 		return;
 
 	devpriv->nread -= nsamples;
@@ -524,7 +489,9 @@
 	}
 #endif
 	/* restart the channel */
-	dt282x_prep_ai_dma(dev, cur_dma, 0);
+	dt282x_prep_ai_dma(dev, dma->cur_dma, 0);
+
+	dma->cur_dma = 1 - dma->cur_dma;
 }
 
 static irqreturn_t dt282x_interrupt(int irq, void *d)
@@ -545,7 +512,7 @@
 	dacsr = inw(dev->iobase + DT2821_DACSR_REG);
 	supcsr = inw(dev->iobase + DT2821_SUPCSR_REG);
 	if (supcsr & DT2821_SUPCSR_DMAD) {
-		if (devpriv->dma_dir == DMA_MODE_READ)
+		if (devpriv->dma_dir == COMEDI_ISADMA_READ)
 			dt282x_ai_dma_interrupt(dev, s);
 		else
 			dt282x_ao_dma_interrupt(dev, s_ao);
@@ -757,6 +724,7 @@
 static int dt282x_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct dt282x_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
 	struct comedi_cmd *cmd = &s->async->cmd;
 	int ret;
 
@@ -778,8 +746,8 @@
 	devpriv->ntrig = cmd->stop_arg * cmd->scan_end_arg;
 	devpriv->nread = devpriv->ntrig;
 
-	devpriv->dma_dir = DMA_MODE_READ;
-	devpriv->current_dma_index = 0;
+	devpriv->dma_dir = COMEDI_ISADMA_READ;
+	dma->cur_dma = 0;
 	dt282x_prep_ai_dma(dev, 0, 0);
 	if (devpriv->ntrig) {
 		dt282x_prep_ai_dma(dev, 1, 0);
@@ -942,6 +910,7 @@
 static int dt282x_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct dt282x_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
 	struct comedi_cmd *cmd = &s->async->cmd;
 
 	dt282x_disable_dma(dev);
@@ -958,8 +927,8 @@
 	devpriv->ntrig = cmd->stop_arg * cmd->chanlist_len;
 	devpriv->nread = devpriv->ntrig;
 
-	devpriv->dma_dir = DMA_MODE_WRITE;
-	devpriv->current_dma_index = 0;
+	devpriv->dma_dir = COMEDI_ISADMA_WRITE;
+	dma->cur_dma = 0;
 
 	outw(devpriv->divisor, dev->iobase + DT2821_TMRCTR_REG);
 
@@ -1063,46 +1032,42 @@
 	return ai_range_table[x];
 }
 
-static int dt282x_grab_dma(struct comedi_device *dev, int dma1, int dma2)
+static void dt282x_alloc_dma(struct comedi_device *dev,
+			     struct comedi_devconfig *it)
 {
 	struct dt282x_private *devpriv = dev->private;
-	int ret;
+	unsigned int irq_num = it->options[1];
+	unsigned int dma_chan[2];
 
-	ret = request_dma(dma1, "dt282x A");
-	if (ret)
-		return -EBUSY;
-	devpriv->dma[0].chan = dma1;
+	if (it->options[2] < it->options[3]) {
+		dma_chan[0] = it->options[2];
+		dma_chan[1] = it->options[3];
+	} else {
+		dma_chan[0] = it->options[3];
+		dma_chan[1] = it->options[2];
+	}
 
-	ret = request_dma(dma2, "dt282x B");
-	if (ret)
-		return -EBUSY;
-	devpriv->dma[1].chan = dma2;
+	if (!irq_num || dma_chan[0] == dma_chan[1] ||
+	    dma_chan[0] < 5 || dma_chan[0] > 7 ||
+	    dma_chan[1] < 5 || dma_chan[1] > 7)
+		return;
 
-	devpriv->dma_maxsize = PAGE_SIZE;
-	devpriv->dma[0].buf = (void *)__get_free_page(GFP_KERNEL | GFP_DMA);
-	devpriv->dma[1].buf = (void *)__get_free_page(GFP_KERNEL | GFP_DMA);
-	if (!devpriv->dma[0].buf || !devpriv->dma[1].buf)
-		return -ENOMEM;
+	if (request_irq(irq_num, dt282x_interrupt, 0, dev->board_name, dev))
+		return;
 
-	return 0;
+	/* DMA uses two 4K buffers with separate DMA channels */
+	devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan[0], dma_chan[1],
+					   PAGE_SIZE, 0);
+	if (!devpriv->dma)
+		free_irq(irq_num, dev);
 }
 
 static void dt282x_free_dma(struct comedi_device *dev)
 {
 	struct dt282x_private *devpriv = dev->private;
-	int i;
 
-	if (!devpriv)
-		return;
-
-	for (i = 0; i < 2; i++) {
-		if (devpriv->dma[i].chan)
-			free_dma(devpriv->dma[i].chan);
-		if (devpriv->dma[i].buf)
-			free_page((unsigned long)devpriv->dma[i].buf);
-		devpriv->dma[i].chan = 0;
-		devpriv->dma[i].buf = NULL;
-	}
+	if (devpriv)
+		comedi_isadma_free(devpriv->dma);
 }
 
 static int dt282x_initialize(struct comedi_device *dev)
@@ -1160,36 +1125,7 @@
 		return -ENOMEM;
 
 	/* an IRQ and 2 DMA channels are required for async command support */
-	if (it->options[1] && it->options[2] && it->options[3]) {
-		unsigned int irq = it->options[1];
-		unsigned int dma1 = it->options[2];
-		unsigned int dma2 = it->options[3];
-
-		if (dma2 < dma1) {
-			unsigned int swap;
-
-			swap = dma1;
-			dma1 = dma2;
-			dma2 = swap;
-		}
-
-		if (dma1 != dma2 &&
-		    dma1 >= 5 && dma1 <= 7 &&
-		    dma2 >= 5 && dma2 <= 7) {
-			ret = request_irq(irq, dt282x_interrupt, 0,
-					  dev->board_name, dev);
-			if (ret == 0) {
-				dev->irq = irq;
-
-				ret = dt282x_grab_dma(dev, dma1, dma2);
-				if (ret < 0) {
-					dt282x_free_dma(dev);
-					free_irq(dev->irq, dev);
-					dev->irq = 0;
-				}
-			}
-		}
-	}
+	dt282x_alloc_dma(dev, it);
 
 	ret = comedi_alloc_subdevices(dev, 3);
 	if (ret)
diff --git a/drivers/staging/comedi/drivers/dyna_pci10xx.c b/drivers/staging/comedi/drivers/dyna_pci10xx.c
index 1b6324c..6c1e442 100644
--- a/drivers/staging/comedi/drivers/dyna_pci10xx.c
+++ b/drivers/staging/comedi/drivers/dyna_pci10xx.c
@@ -14,24 +14,23 @@
  */
 
 /*
- Driver: dyna_pci10xx
- Devices: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
- Author: Prashant Shah <pshah.mumbai@gmail.com>
- Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
- Prof. Kannan Moudgalya <kannan@iitb.ac.in>
- http://www.iitb.ac.in
- Status: Stable
- Version: 1.0
- Device Supported :
- - Dynalog PCI 1050
-
- Notes :
- - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
- they are using the PLX Technlogies Vendor ID since that is the PCI Chip used
- in the card.
- - Dynalog India Pvt. Ltd. has provided the internal register specification for
- their cards in their manuals.
-*/
+ * Driver: dyna_pci10xx
+ * Description: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
+ * Devices: [Dynalog] PCI-1050 (dyna_pci1050)
+ * Author: Prashant Shah <pshah.mumbai@gmail.com>
+ * Status: Stable
+ *
+ * Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
+ * Prof. Kannan Moudgalya <kannan@iitb.ac.in>
+ * http://www.iitb.ac.in
+ *
+ * Notes :
+ * - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
+ *   they are using the PLX Technlogies Vendor ID since that is the PCI Chip
+ *   used in the card.
+ * - Dynalog India Pvt. Ltd. has provided the internal register specification
+ *   for their cards in their manuals.
+ */
 
 #include <linux/module.h>
 #include <linux/delay.h>
diff --git a/drivers/staging/comedi/drivers/ii_pci20kc.c b/drivers/staging/comedi/drivers/ii_pci20kc.c
index 1085d66..0768bc42 100644
--- a/drivers/staging/comedi/drivers/ii_pci20kc.c
+++ b/drivers/staging/comedi/drivers/ii_pci20kc.c
@@ -9,7 +9,7 @@
 /*
  * Driver: ii_pci20kc
  * Description: Intelligent Instruments PCI-20001C carrier board
- * Devices: (Intelligent Instrumentation) PCI-20001C [ii_pci20kc]
+ * Devices: [Intelligent Instrumentation] PCI-20001C (ii_pci20kc)
  * Author: Markus Kempf <kempf@matsci.uni-sb.de>
  * Status: works
  *
diff --git a/drivers/staging/comedi/drivers/ke_counter.c b/drivers/staging/comedi/drivers/ke_counter.c
index 77e94a3..3c19e0f 100644
--- a/drivers/staging/comedi/drivers/ke_counter.c
+++ b/drivers/staging/comedi/drivers/ke_counter.c
@@ -19,7 +19,7 @@
 /*
  * Driver: ke_counter
  * Description: Driver for Kolter Electronic Counter Card
- * Devices: (Kolter Electronic) PCI Counter Card [ke_counter]
+ * Devices: [Kolter Electronic] PCI Counter Card (ke_counter)
  * Author: Michael Hillmann
  * Updated: Mon, 14 Apr 2008 15:42:42 +0100
  * Status: tested
diff --git a/drivers/staging/comedi/drivers/me_daq.c b/drivers/staging/comedi/drivers/me_daq.c
index b5278c1..bffc161 100644
--- a/drivers/staging/comedi/drivers/me_daq.c
+++ b/drivers/staging/comedi/drivers/me_daq.c
@@ -19,8 +19,7 @@
 /*
  * Driver: me_daq
  * Description: Meilhaus PCI data acquisition cards
- * Devices: (Meilhaus) ME-2600i [me-2600i]
- *          (Meilhaus) ME-2000i [me-2000i]
+ * Devices: [Meilhaus] ME-2600i (me-2600i), ME-2000i (me-2000i)
  * Author: Michael Hillmann <hillmann@syscongroup.de>
  * Status: experimental
  *
diff --git a/drivers/staging/comedi/drivers/mf6x4.c b/drivers/staging/comedi/drivers/mf6x4.c
index af21bc1..db972bc 100644
--- a/drivers/staging/comedi/drivers/mf6x4.c
+++ b/drivers/staging/comedi/drivers/mf6x4.c
@@ -18,7 +18,7 @@
 /*
  * Driver: mf6x4
  * Description: Humusoft MF634 and MF624 Data acquisition card driver
- * Devices: Humusoft MF634, Humusoft MF624
+ * Devices: [Humusoft] MF634 (mf634), MF624 (mf624)
  * Author: Rostislav Lisovy <lisovy@gmail.com>
  * Status: works
  * Updated:
diff --git a/drivers/staging/comedi/drivers/ni_6527.c b/drivers/staging/comedi/drivers/ni_6527.c
index f99847f..530f716 100644
--- a/drivers/staging/comedi/drivers/ni_6527.c
+++ b/drivers/staging/comedi/drivers/ni_6527.c
@@ -19,8 +19,7 @@
 /*
  * Driver: ni_6527
  * Description: National Instruments 6527
- * Devices: (National Instruments) PCI-6527 [pci-6527]
- *          (National Instruments) PXI-6527 [pxi-6527]
+ * Devices: [National Instruments] PCI-6527 (pci-6527), PXI-6527 (pxi-6527)
  * Author: David A. Schleef <ds@schleef.org>
  * Updated: Sat, 25 Jan 2003 13:24:40 -0800
  * Status: works
diff --git a/drivers/staging/comedi/drivers/ni_65xx.c b/drivers/staging/comedi/drivers/ni_65xx.c
index bcb326e..67cb758 100644
--- a/drivers/staging/comedi/drivers/ni_65xx.c
+++ b/drivers/staging/comedi/drivers/ni_65xx.c
@@ -25,28 +25,14 @@
  * Author: Jon Grierson <jd@renko.co.uk>,
  *	   Frank Mori Hess <fmhess@users.sourceforge.net>
  * Status: testing
- * Devices: (National Instruments) PCI-6509 [ni_65xx]
- *	    (National Instruments) PXI-6509 [ni_65xx]
- *	    (National Instruments) PCI-6510 [ni_65xx]
- *	    (National Instruments) PCI-6511 [ni_65xx]
- *	    (National Instruments) PXI-6511 [ni_65xx]
- *	    (National Instruments) PCI-6512 [ni_65xx]
- *	    (National Instruments) PXI-6512 [ni_65xx]
- *	    (National Instruments) PCI-6513 [ni_65xx]
- *	    (National Instruments) PXI-6513 [ni_65xx]
- *	    (National Instruments) PCI-6514 [ni_65xx]
- *	    (National Instruments) PXI-6514 [ni_65xx]
- *	    (National Instruments) PCI-6515 [ni_65xx]
- *	    (National Instruments) PXI-6515 [ni_65xx]
- *	    (National Instruments) PCI-6516 [ni_65xx]
- *	    (National Instruments) PCI-6517 [ni_65xx]
- *	    (National Instruments) PCI-6518 [ni_65xx]
- *	    (National Instruments) PCI-6519 [ni_65xx]
- *	    (National Instruments) PCI-6520 [ni_65xx]
- *	    (National Instruments) PCI-6521 [ni_65xx]
- *	    (National Instruments) PXI-6521 [ni_65xx]
- *	    (National Instruments) PCI-6528 [ni_65xx]
- *	    (National Instruments) PXI-6528 [ni_65xx]
+ * Devices: [National Instruments] PCI-6509 (pci-6509), PXI-6509 (pxi-6509),
+ *   PCI-6510 (pci-6510), PCI-6511 (pci-6511), PXI-6511 (pxi-6511),
+ *   PCI-6512 (pci-6512), PXI-6512 (pxi-6512), PCI-6513 (pci-6513),
+ *   PXI-6513 (pxi-6513), PCI-6514 (pci-6514), PXI-6514 (pxi-6514),
+ *   PCI-6515 (pxi-6515), PXI-6515 (pxi-6515), PCI-6516 (pci-6516),
+ *   PCI-6517 (pci-6517), PCI-6518 (pci-6518), PCI-6519 (pci-6519),
+ *   PCI-6520 (pci-6520), PCI-6521 (pci-6521), PXI-6521 (pxi-6521),
+ *   PCI-6528 (pci-6528), PXI-6528 (pxi-6528)
  * Updated: Mon, 21 Jul 2014 12:49:58 +0000
  *
  * Configuration Options: not applicable, uses PCI auto config
diff --git a/drivers/staging/comedi/drivers/ni_at_a2150.c b/drivers/staging/comedi/drivers/ni_at_a2150.c
index 69e543a..2500148 100644
--- a/drivers/staging/comedi/drivers/ni_at_a2150.c
+++ b/drivers/staging/comedi/drivers/ni_at_a2150.c
@@ -62,14 +62,13 @@
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
-#include "../comedidev.h"
-
 #include <linux/io.h>
 
-#include <asm/dma.h>
+#include "../comedidev.h"
 
-#include "8253.h"
+#include "comedi_isadma.h"
 #include "comedi_fc.h"
+#include "8253.h"
 
 #define A2150_DMA_BUFFER_SIZE	0xff00	/*  size in bytes of dma buffer */
 
@@ -146,11 +145,8 @@
 };
 
 struct a2150_private {
-
-	volatile unsigned int count;	/* number of data points left to be taken */
-	unsigned int dma;	/*  dma channel */
-	uint16_t *dma_buffer;	/*  dma buffer */
-	unsigned int dma_transfer_size;	/*  size in bytes of dma transfers */
+	struct comedi_isadma *dma;
+	unsigned int count;	/* number of data points left to be taken */
 	int irq_dma_bits;	/*  irq/dma register bits */
 	int config_bits;	/*  config register bits */
 };
@@ -158,68 +154,54 @@
 /* interrupt service routine */
 static irqreturn_t a2150_interrupt(int irq, void *d)
 {
-	int i;
-	int status;
-	unsigned long flags;
 	struct comedi_device *dev = d;
 	struct a2150_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[0];
 	struct comedi_subdevice *s = dev->read_subdev;
-	struct comedi_async *async;
-	struct comedi_cmd *cmd;
+	struct comedi_async *async = s->async;
+	struct comedi_cmd *cmd = &async->cmd;
+	unsigned short *buf = desc->virt_addr;
 	unsigned int max_points, num_points, residue, leftover;
 	unsigned short dpnt;
+	int status;
+	int i;
 
-	if (!dev->attached) {
-		dev_err(dev->class_dev, "premature interrupt\n");
+	if (!dev->attached)
 		return IRQ_HANDLED;
-	}
-	/*  initialize async here to make sure s is not NULL */
-	async = s->async;
-	cmd = &async->cmd;
 
 	status = inw(dev->iobase + STATUS_REG);
-
-	if ((status & INTR_BIT) == 0) {
-		dev_err(dev->class_dev, "spurious interrupt\n");
+	if ((status & INTR_BIT) == 0)
 		return IRQ_NONE;
-	}
 
 	if (status & OVFL_BIT) {
-		dev_err(dev->class_dev, "fifo overflow\n");
 		async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
 		comedi_handle_events(dev, s);
 	}
 
 	if ((status & DMA_TC_BIT) == 0) {
-		dev_err(dev->class_dev,
-			"caught non-dma interrupt?  Aborting.\n");
 		async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
 		comedi_handle_events(dev, s);
 		return IRQ_HANDLED;
 	}
 
-	flags = claim_dma_lock();
-	disable_dma(devpriv->dma);
-	/* clear flip-flop to make sure 2-byte registers for
-	 * count and address get set correctly */
-	clear_dma_ff(devpriv->dma);
-
-	/*  figure out how many points to read */
-	max_points = comedi_bytes_to_samples(s, devpriv->dma_transfer_size);
-	/* residue is the number of points left to be done on the dma
+	/*
+	 * residue is the number of bytes left to be done on the dma
 	 * transfer.  It should always be zero at this point unless
 	 * the stop_src is set to external triggering.
 	 */
-	residue = comedi_bytes_to_samples(s, get_dma_residue(devpriv->dma));
-	num_points = max_points - residue;
+	residue = comedi_isadma_disable(desc->chan);
+
+	/*  figure out how many points to read */
+	max_points = comedi_bytes_to_samples(s, desc->size);
+	num_points = max_points - comedi_bytes_to_samples(s, residue);
 	if (devpriv->count < num_points && cmd->stop_src == TRIG_COUNT)
 		num_points = devpriv->count;
 
 	/*  figure out how many points will be stored next time */
 	leftover = 0;
 	if (cmd->stop_src == TRIG_NONE) {
-		leftover = comedi_bytes_to_samples(s,
-						   devpriv->dma_transfer_size);
+		leftover = comedi_bytes_to_samples(s, desc->size);
 	} else if (devpriv->count > max_points) {
 		leftover = devpriv->count - max_points;
 		if (leftover > max_points)
@@ -234,7 +216,7 @@
 
 	for (i = 0; i < num_points; i++) {
 		/* write data point to comedi buffer */
-		dpnt = devpriv->dma_buffer[i];
+		dpnt = buf[i];
 		/*  convert from 2's complement to unsigned coding */
 		dpnt ^= 0x8000;
 		comedi_buf_write_samples(s, &dpnt, 1);
@@ -245,14 +227,11 @@
 			}
 		}
 	}
-	/*  re-enable  dma */
+	/* re-enable dma */
 	if (leftover) {
-		set_dma_addr(devpriv->dma, virt_to_bus(devpriv->dma_buffer));
-		set_dma_count(devpriv->dma,
-			      comedi_samples_to_bytes(s, leftover));
-		enable_dma(devpriv->dma);
+		desc->size = comedi_samples_to_bytes(s, leftover);
+		comedi_isadma_program(desc);
 	}
-	release_dma_lock(flags);
 
 	comedi_handle_events(dev, s);
 
@@ -265,13 +244,15 @@
 static int a2150_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct a2150_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[0];
 
 	/*  disable dma on card */
 	devpriv->irq_dma_bits &= ~DMA_INTR_EN_BIT & ~DMA_EN_BIT;
 	outw(devpriv->irq_dma_bits, dev->iobase + IRQ_DMA_CNTRL_REG);
 
 	/*  disable computer's dma */
-	disable_dma(devpriv->dma);
+	comedi_isadma_disable(desc->chan);
 
 	/*  clear fifo and reset triggering circuitry */
 	outw(0, dev->iobase + FIFO_RESET_REG);
@@ -503,10 +484,11 @@
 static int a2150_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct a2150_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[0];
 	struct comedi_async *async = s->async;
 	struct comedi_cmd *cmd = &async->cmd;
 	unsigned long timer_base = dev->iobase + I8253_BASE_REG;
-	unsigned long lock_flags;
 	unsigned int old_config_bits = devpriv->config_bits;
 	unsigned int trigger_bits;
 
@@ -542,27 +524,19 @@
 	/*  initialize number of samples remaining */
 	devpriv->count = cmd->stop_arg * cmd->chanlist_len;
 
-	/*  enable computer's dma */
-	lock_flags = claim_dma_lock();
-	disable_dma(devpriv->dma);
-	/* clear flip-flop to make sure 2-byte registers for
-	 * count and address get set correctly */
-	clear_dma_ff(devpriv->dma);
-	set_dma_addr(devpriv->dma, virt_to_bus(devpriv->dma_buffer));
+	comedi_isadma_disable(desc->chan);
+
 	/*  set size of transfer to fill in 1/3 second */
 #define ONE_THIRD_SECOND 333333333
-	devpriv->dma_transfer_size =
-	    sizeof(devpriv->dma_buffer[0]) * cmd->chanlist_len *
-	    ONE_THIRD_SECOND / cmd->scan_begin_arg;
-	if (devpriv->dma_transfer_size > A2150_DMA_BUFFER_SIZE)
-		devpriv->dma_transfer_size = A2150_DMA_BUFFER_SIZE;
-	if (devpriv->dma_transfer_size < sizeof(devpriv->dma_buffer[0]))
-		devpriv->dma_transfer_size = sizeof(devpriv->dma_buffer[0]);
-	devpriv->dma_transfer_size -=
-	    devpriv->dma_transfer_size % sizeof(devpriv->dma_buffer[0]);
-	set_dma_count(devpriv->dma, devpriv->dma_transfer_size);
-	enable_dma(devpriv->dma);
-	release_dma_lock(lock_flags);
+	desc->size = comedi_bytes_per_sample(s) * cmd->chanlist_len *
+		    ONE_THIRD_SECOND / cmd->scan_begin_arg;
+	if (desc->size > desc->maxsize)
+		desc->size = desc->maxsize;
+	if (desc->size < comedi_bytes_per_sample(s))
+		desc->size = comedi_bytes_per_sample(s);
+	desc->size -= desc->size % comedi_bytes_per_sample(s);
+
+	comedi_isadma_program(desc);
 
 	/* clear dma interrupt before enabling it, to try and get rid of that
 	 * one spurious interrupt that has been happening */
@@ -677,6 +651,45 @@
 	return n;
 }
 
+static void a2150_alloc_irq_and_dma(struct comedi_device *dev,
+				    struct comedi_devconfig *it)
+{
+	struct a2150_private *devpriv = dev->private;
+	unsigned int irq_num = it->options[1];
+	unsigned int dma_chan = it->options[2];
+
+	/*
+	 * Only IRQs 15, 14, 12-9, and 7-3 are valid.
+	 * Only DMA channels 7-5 and 3-0 are valid.
+	 */
+	if (irq_num > 15 || dma_chan > 7 ||
+	    !((1 << irq_num) & 0xdef8) || !((1 << dma_chan) & 0xef))
+		return;
+
+	if (request_irq(irq_num, a2150_interrupt, 0, dev->board_name, dev))
+		return;
+
+	/* DMA uses 1 buffer */
+	devpriv->dma = comedi_isadma_alloc(dev, 1, dma_chan, dma_chan,
+					   A2150_DMA_BUFFER_SIZE,
+					   COMEDI_ISADMA_READ);
+	if (!devpriv->dma) {
+		free_irq(irq_num, dev);
+	} else {
+		dev->irq = irq_num;
+		devpriv->irq_dma_bits = IRQ_LVL_BITS(irq_num) |
+					DMA_CHAN_BITS(dma_chan);
+	}
+}
+
+static void a2150_free_dma(struct comedi_device *dev)
+{
+	struct a2150_private *devpriv = dev->private;
+
+	if (devpriv)
+		comedi_isadma_free(devpriv->dma);
+}
+
 /* probes board type, returns offset */
 static int a2150_probe(struct comedi_device *dev)
 {
@@ -690,8 +703,6 @@
 	const struct a2150_board *thisboard;
 	struct a2150_private *devpriv;
 	struct comedi_subdevice *s;
-	unsigned int irq = it->options[1];
-	unsigned int dma = it->options[2];
 	static const int timeout = 2000;
 	int i;
 	int ret;
@@ -712,31 +723,8 @@
 	thisboard = dev->board_ptr;
 	dev->board_name = thisboard->name;
 
-	if ((irq >= 3 && irq <= 7) || (irq >= 9 && irq <= 12) ||
-	    irq == 14 || irq == 15) {
-		ret = request_irq(irq, a2150_interrupt, 0,
-				  dev->board_name, dev);
-		if (ret == 0) {
-			devpriv->irq_dma_bits |= IRQ_LVL_BITS(irq);
-			dev->irq = irq;
-		}
-	}
-
-	if (dev->irq && dma <= 7 && dma != 4) {
-		ret = request_dma(dma, dev->board_name);
-		if (ret == 0) {
-			devpriv->dma = dma;
-			devpriv->dma_buffer = kmalloc(A2150_DMA_BUFFER_SIZE,
-						      GFP_KERNEL | GFP_DMA);
-			if (!devpriv->dma_buffer)
-				return -ENOMEM;
-
-			disable_dma(dma);
-			set_dma_mode(dma, DMA_MODE_READ);
-
-			devpriv->irq_dma_bits |= DMA_CHAN_BITS(dma);
-		}
-	}
+	/* an IRQ and DMA are required to support async commands */
+	a2150_alloc_irq_and_dma(dev, it);
 
 	ret = comedi_alloc_subdevices(dev, 1);
 	if (ret)
@@ -750,7 +738,7 @@
 	s->maxdata = 0xffff;
 	s->range_table = &range_a2150;
 	s->insn_read = a2150_ai_rinsn;
-	if (dev->irq && devpriv->dma) {
+	if (dev->irq) {
 		dev->read_subdev = s;
 		s->subdev_flags |= SDF_CMD_READ;
 		s->len_chanlist = s->n_chan;
@@ -791,15 +779,9 @@
 
 static void a2150_detach(struct comedi_device *dev)
 {
-	struct a2150_private *devpriv = dev->private;
-
 	if (dev->iobase)
 		outw(APD_BIT | DPD_BIT, dev->iobase + CONFIG_REG);
-	if (devpriv) {
-		if (devpriv->dma)
-			free_dma(devpriv->dma);
-		kfree(devpriv->dma_buffer);
-	}
+	a2150_free_dma(dev);
 	comedi_legacy_detach(dev);
 };
 
diff --git a/drivers/staging/comedi/drivers/ni_at_ao.c b/drivers/staging/comedi/drivers/ni_at_ao.c
index 05370a4..9eeaf3c 100644
--- a/drivers/staging/comedi/drivers/ni_at_ao.c
+++ b/drivers/staging/comedi/drivers/ni_at_ao.c
@@ -19,8 +19,7 @@
 /*
  * Driver: ni_at_ao
  * Description: National Instruments AT-AO-6/10
- * Devices: (National Instruments) AT-AO-6 [at-ao-6]
- *          (National Instruments) AT-AO-10 [at-ao-10]
+ * Devices: [National Instruments] AT-AO-6 (at-ao-6), AT-AO-10 (at-ao-10)
  * Status: should work
  * Author: David A. Schleef <ds@schleef.org>
  * Updated: Sun Dec 26 12:26:28 EST 2004
diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c
index 1fbfdb4..59da404 100644
--- a/drivers/staging/comedi/drivers/ni_labpc.c
+++ b/drivers/staging/comedi/drivers/ni_labpc.c
@@ -17,9 +17,8 @@
 /*
  * Driver: ni_labpc
  * Description: National Instruments Lab-PC (& compatibles)
- * Devices: (National Instruments) Lab-PC-1200 [lab-pc-1200]
- *	    (National Instruments) Lab-PC-1200AI [lab-pc-1200ai]
- *	    (National Instruments) Lab-PC+ [lab-pc+]
+ * Devices: [National Instruments] Lab-PC-1200 (lab-pc-1200),
+ *   Lab-PC-1200AI (lab-pc-1200ai), Lab-PC+ (lab-pc+)
  * Author: Frank Mori Hess <fmhess@users.sourceforge.net>
  * Status: works
  *
diff --git a/drivers/staging/comedi/drivers/ni_labpc.h b/drivers/staging/comedi/drivers/ni_labpc.h
index ac2c01f..be89ae4 100644
--- a/drivers/staging/comedi/drivers/ni_labpc.h
+++ b/drivers/staging/comedi/drivers/ni_labpc.h
@@ -35,6 +35,8 @@
 };
 
 struct labpc_private {
+	struct comedi_isadma *dma;
+
 	/*  number of data points left to be taken */
 	unsigned long long count;
 	/*  software copys of bits written to command registers */
@@ -61,11 +63,7 @@
 	 * conversions
 	 */
 	unsigned int divisor_b1;
-	unsigned int dma_chan;	/*  dma channel to use */
-	u16 *dma_buffer;	/*  buffer ai will dma into */
-	phys_addr_t dma_addr;
-	/* transfer size in bytes for current transfer */
-	unsigned int dma_transfer_size;
+
 	/* we are using dma/fifo-half-full/etc. */
 	enum transfer_type current_transfer;
 	/*
diff --git a/drivers/staging/comedi/drivers/ni_labpc_common.c b/drivers/staging/comedi/drivers/ni_labpc_common.c
index d89d585..eea7f94 100644
--- a/drivers/staging/comedi/drivers/ni_labpc_common.c
+++ b/drivers/staging/comedi/drivers/ni_labpc_common.c
@@ -687,7 +687,7 @@
 	}
 
 	/* figure out what method we will use to transfer data */
-	if (labpc_have_dma_chan(dev) &&
+	if (devpriv->dma &&
 	    /* dma unsafe at RT priority,
 	     * and too much setup time for CMDF_WAKE_EOS */
 	    (cmd->flags & (CMDF_WAKE_EOS | CMDF_PRIORITY)) == 0)
diff --git a/drivers/staging/comedi/drivers/ni_labpc_isadma.c b/drivers/staging/comedi/drivers/ni_labpc_isadma.c
index 6d38605..6b4ccd8 100644
--- a/drivers/staging/comedi/drivers/ni_labpc_isadma.c
+++ b/drivers/staging/comedi/drivers/ni_labpc_isadma.c
@@ -19,23 +19,25 @@
 
 #include <linux/module.h>
 #include <linux/slab.h>
+
 #include "../comedidev.h"
 
-#include <asm/dma.h>
-
+#include "comedi_isadma.h"
 #include "comedi_fc.h"
 #include "ni_labpc.h"
 #include "ni_labpc_regs.h"
 #include "ni_labpc_isadma.h"
 
 /* size in bytes of dma buffer */
-static const int dma_buffer_size = 0xff00;
-/* 2 bytes per sample */
-static const int sample_size = 2;
+#define LABPC_ISADMA_BUFFER_SIZE	0xff00
 
 /* utility function that suggests a dma transfer size in bytes */
-static unsigned int labpc_suggest_transfer_size(const struct comedi_cmd *cmd)
+static unsigned int labpc_suggest_transfer_size(struct comedi_device *dev,
+						struct comedi_subdevice *s,
+						unsigned int maxbytes)
 {
+	struct comedi_cmd *cmd = &s->async->cmd;
+	unsigned int sample_size = comedi_bytes_per_sample(s);
 	unsigned int size;
 	unsigned int freq;
 
@@ -49,8 +51,8 @@
 	size = (freq / 3) * sample_size;
 
 	/* set a minimum and maximum size allowed */
-	if (size > dma_buffer_size)
-		size = dma_buffer_size - dma_buffer_size % sample_size;
+	if (size > maxbytes)
+		size = maxbytes;
 	else if (size < sample_size)
 		size = sample_size;
 
@@ -60,23 +62,18 @@
 void labpc_setup_dma(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct labpc_private *devpriv = dev->private;
+	struct comedi_isadma_desc *desc = &devpriv->dma->desc[0];
 	struct comedi_cmd *cmd = &s->async->cmd;
-	unsigned long irq_flags;
+	unsigned int sample_size = comedi_bytes_per_sample(s);
 
-	irq_flags = claim_dma_lock();
-	disable_dma(devpriv->dma_chan);
-	/* clear flip-flop to make sure 2-byte registers for
-	 * count and address get set correctly */
-	clear_dma_ff(devpriv->dma_chan);
-	set_dma_addr(devpriv->dma_chan, devpriv->dma_addr);
 	/* set appropriate size of transfer */
-	devpriv->dma_transfer_size = labpc_suggest_transfer_size(cmd);
+	desc->size = labpc_suggest_transfer_size(dev, s, desc->maxsize);
 	if (cmd->stop_src == TRIG_COUNT &&
-	    devpriv->count * sample_size < devpriv->dma_transfer_size)
-		devpriv->dma_transfer_size = devpriv->count * sample_size;
-	set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size);
-	enable_dma(devpriv->dma_chan);
-	release_dma_lock(irq_flags);
+	    devpriv->count * sample_size < desc->size)
+		desc->size = devpriv->count * sample_size;
+
+	comedi_isadma_program(desc);
+
 	/* set CMD3 bits for caller to enable DMA and interrupt */
 	devpriv->cmd3 |= (CMD3_DMAEN | CMD3_DMATCINTEN);
 }
@@ -85,61 +82,55 @@
 void labpc_drain_dma(struct comedi_device *dev)
 {
 	struct labpc_private *devpriv = dev->private;
+	struct comedi_isadma_desc *desc = &devpriv->dma->desc[0];
 	struct comedi_subdevice *s = dev->read_subdev;
 	struct comedi_async *async = s->async;
 	struct comedi_cmd *cmd = &async->cmd;
-	int status;
-	unsigned long flags;
-	unsigned int max_points, num_points, residue, leftover;
+	unsigned int max_samples = comedi_bytes_to_samples(s, desc->size);
+	unsigned int residue;
+	unsigned int nsamples;
+	unsigned int leftover;
 
-	status = devpriv->stat1;
-
-	flags = claim_dma_lock();
-	disable_dma(devpriv->dma_chan);
-	/* clear flip-flop to make sure 2-byte registers for
-	 * count and address get set correctly */
-	clear_dma_ff(devpriv->dma_chan);
-
-	/* figure out how many points to read */
-	max_points = devpriv->dma_transfer_size / sample_size;
-	/* residue is the number of points left to be done on the dma
+	/*
+	 * residue is the number of bytes left to be done on the dma
 	 * transfer.  It should always be zero at this point unless
 	 * the stop_src is set to external triggering.
 	 */
-	residue = get_dma_residue(devpriv->dma_chan) / sample_size;
-	num_points = max_points - residue;
-	if (cmd->stop_src == TRIG_COUNT && devpriv->count < num_points)
-		num_points = devpriv->count;
+	residue = comedi_isadma_disable(desc->chan);
 
-	/* figure out how many points will be stored next time */
-	leftover = 0;
-	if (cmd->stop_src != TRIG_COUNT) {
-		leftover = devpriv->dma_transfer_size / sample_size;
-	} else if (devpriv->count > num_points) {
-		leftover = devpriv->count - num_points;
-		if (leftover > max_points)
-			leftover = max_points;
+	/*
+	 * Figure out how many samples to read for this transfer and
+	 * how many will be stored for next time.
+	 */
+	nsamples = max_samples - comedi_bytes_to_samples(s, residue);
+	if (cmd->stop_src == TRIG_COUNT) {
+		if (devpriv->count <= nsamples) {
+			nsamples = devpriv->count;
+			leftover = 0;
+		} else {
+			leftover = devpriv->count - nsamples;
+			if (leftover > max_samples)
+				leftover = max_samples;
+		}
+		devpriv->count -= nsamples;
+	} else {
+		leftover = max_samples;
 	}
+	desc->size = comedi_samples_to_bytes(s, leftover);
 
-	comedi_buf_write_samples(s, devpriv->dma_buffer, num_points);
-
-	if (cmd->stop_src == TRIG_COUNT)
-		devpriv->count -= num_points;
-
-	/* set address and count for next transfer */
-	set_dma_addr(devpriv->dma_chan, devpriv->dma_addr);
-	set_dma_count(devpriv->dma_chan, leftover * sample_size);
-	release_dma_lock(flags);
+	comedi_buf_write_samples(s, desc->virt_addr, nsamples);
 }
 EXPORT_SYMBOL_GPL(labpc_drain_dma);
 
 static void handle_isa_dma(struct comedi_device *dev)
 {
 	struct labpc_private *devpriv = dev->private;
+	struct comedi_isadma_desc *desc = &devpriv->dma->desc[0];
 
 	labpc_drain_dma(dev);
 
-	enable_dma(devpriv->dma_chan);
+	if (desc->size)
+		comedi_isadma_program(desc);
 
 	/* clear dma tc interrupt */
 	devpriv->write_byte(dev, 0x1, DMATC_CLEAR_REG);
@@ -160,36 +151,18 @@
 }
 EXPORT_SYMBOL_GPL(labpc_handle_dma_status);
 
-int labpc_init_dma_chan(struct comedi_device *dev, unsigned int dma_chan)
+void labpc_init_dma_chan(struct comedi_device *dev, unsigned int dma_chan)
 {
 	struct labpc_private *devpriv = dev->private;
-	void *dma_buffer;
-	unsigned long dma_flags;
-	int ret;
 
+	/* only DMA channels 3 and 1 are valid */
 	if (dma_chan != 1 && dma_chan != 3)
-		return -EINVAL;
+		return;
 
-	dma_buffer = kmalloc(dma_buffer_size, GFP_KERNEL | GFP_DMA);
-	if (!dma_buffer)
-		return -ENOMEM;
-
-	ret = request_dma(dma_chan, dev->board_name);
-	if (ret) {
-		kfree(dma_buffer);
-		return ret;
-	}
-
-	devpriv->dma_buffer = dma_buffer;
-	devpriv->dma_chan = dma_chan;
-	devpriv->dma_addr = virt_to_bus(devpriv->dma_buffer);
-
-	dma_flags = claim_dma_lock();
-	disable_dma(devpriv->dma_chan);
-	set_dma_mode(devpriv->dma_chan, DMA_MODE_READ);
-	release_dma_lock(dma_flags);
-
-	return 0;
+	/* DMA uses 1 buffer */
+	devpriv->dma = comedi_isadma_alloc(dev, 1, dma_chan, dma_chan,
+					   LABPC_ISADMA_BUFFER_SIZE,
+					   COMEDI_ISADMA_READ);
 }
 EXPORT_SYMBOL_GPL(labpc_init_dma_chan);
 
@@ -197,12 +170,8 @@
 {
 	struct labpc_private *devpriv = dev->private;
 
-	kfree(devpriv->dma_buffer);
-	devpriv->dma_buffer = NULL;
-	if (devpriv->dma_chan) {
-		free_dma(devpriv->dma_chan);
-		devpriv->dma_chan = 0;
-	}
+	if (devpriv)
+		comedi_isadma_free(devpriv->dma);
 }
 EXPORT_SYMBOL_GPL(labpc_free_dma_chan);
 
diff --git a/drivers/staging/comedi/drivers/ni_labpc_isadma.h b/drivers/staging/comedi/drivers/ni_labpc_isadma.h
index 771af4bd..b8a1b0e 100644
--- a/drivers/staging/comedi/drivers/ni_labpc_isadma.h
+++ b/drivers/staging/comedi/drivers/ni_labpc_isadma.h
@@ -5,18 +5,9 @@
 #ifndef _NI_LABPC_ISADMA_H
 #define _NI_LABPC_ISADMA_H
 
-#define NI_LABPC_HAVE_ISA_DMA	IS_ENABLED(CONFIG_COMEDI_NI_LABPC_ISADMA)
+#if IS_ENABLED(CONFIG_COMEDI_NI_LABPC_ISADMA)
 
-#if NI_LABPC_HAVE_ISA_DMA
-
-static inline bool labpc_have_dma_chan(struct comedi_device *dev)
-{
-	struct labpc_private *devpriv = dev->private;
-
-	return (bool)devpriv->dma_chan;
-}
-
-int labpc_init_dma_chan(struct comedi_device *dev, unsigned int dma_chan);
+void labpc_init_dma_chan(struct comedi_device *dev, unsigned int dma_chan);
 void labpc_free_dma_chan(struct comedi_device *dev);
 void labpc_setup_dma(struct comedi_device *dev, struct comedi_subdevice *s);
 void labpc_drain_dma(struct comedi_device *dev);
@@ -24,15 +15,9 @@
 
 #else
 
-static inline bool labpc_have_dma_chan(struct comedi_device *dev)
+static inline void labpc_init_dma_chan(struct comedi_device *dev,
+				       unsigned int dma_chan)
 {
-	return false;
-}
-
-static inline int labpc_init_dma_chan(struct comedi_device *dev,
-				      unsigned int dma_chan)
-{
-	return -ENOTSUPP;
 }
 
 static inline void labpc_free_dma_chan(struct comedi_device *dev)
diff --git a/drivers/staging/comedi/drivers/ni_labpc_pci.c b/drivers/staging/comedi/drivers/ni_labpc_pci.c
index 3fc4204..a9f408a 100644
--- a/drivers/staging/comedi/drivers/ni_labpc_pci.c
+++ b/drivers/staging/comedi/drivers/ni_labpc_pci.c
@@ -17,7 +17,7 @@
 /*
  * Driver: ni_labpc_pci
  * Description: National Instruments Lab-PC PCI-1200
- * Devices: (National Instruments) PCI-1200 [ni_pci-1200]
+ * Devices: [National Instruments] PCI-1200 (ni_pci-1200)
  * Author: Frank Mori Hess <fmhess@users.sourceforge.net>
  * Status: works
  *
diff --git a/drivers/staging/comedi/drivers/ni_tio.c b/drivers/staging/comedi/drivers/ni_tio.c
index 0525292..c20c51b 100644
--- a/drivers/staging/comedi/drivers/ni_tio.c
+++ b/drivers/staging/comedi/drivers/ni_tio.c
@@ -16,29 +16,28 @@
 */
 
 /*
-Driver: ni_tio
-Description: National Instruments general purpose counters
-Devices:
-Author: J.P. Mellor <jpmellor@rose-hulman.edu>,
-	Herman.Bruyninckx@mech.kuleuven.ac.be,
-	Wim.Meeussen@mech.kuleuven.ac.be,
-	Klaas.Gadeyne@mech.kuleuven.ac.be,
-	Frank Mori Hess <fmhess@users.sourceforge.net>
-Updated: Thu Nov 16 09:50:32 EST 2006
-Status: works
+ * Module: ni_tio
+ * Description: National Instruments general purpose counters
+ * Author: J.P. Mellor <jpmellor@rose-hulman.edu>,
+ *         Herman.Bruyninckx@mech.kuleuven.ac.be,
+ *         Wim.Meeussen@mech.kuleuven.ac.be,
+ *         Klaas.Gadeyne@mech.kuleuven.ac.be,
+ *         Frank Mori Hess <fmhess@users.sourceforge.net>
+ * Updated: Thu Nov 16 09:50:32 EST 2006
+ * Status: works
+ *
+ * This module is not used directly by end-users.  Rather, it
+ * is used by other drivers (for example ni_660x and ni_pcimio)
+ * to provide support for NI's general purpose counters.  It was
+ * originally based on the counter code from ni_660x.c and
+ * ni_mio_common.c.
+ *
+ * References:
+ * DAQ 660x Register-Level Programmer Manual  (NI 370505A-01)
+ * DAQ 6601/6602 User Manual (NI 322137B-01)
+ * 340934b.pdf  DAQ-STC reference manual
+ */
 
-This module is not used directly by end-users.  Rather, it
-is used by other drivers (for example ni_660x and ni_pcimio)
-to provide support for NI's general purpose counters.  It was
-originally based on the counter code from ni_660x.c and
-ni_mio_common.c.
-
-References:
-DAQ 660x Register-Level Programmer Manual  (NI 370505A-01)
-DAQ 6601/6602 User Manual (NI 322137B-01)
-340934b.pdf  DAQ-STC reference manual
-
-*/
 /*
 TODO:
 	Support use of both banks X and Y
diff --git a/drivers/staging/comedi/drivers/ni_tiocmd.c b/drivers/staging/comedi/drivers/ni_tiocmd.c
index 6037bec..d36c3ab 100644
--- a/drivers/staging/comedi/drivers/ni_tiocmd.c
+++ b/drivers/staging/comedi/drivers/ni_tiocmd.c
@@ -16,29 +16,28 @@
 */
 
 /*
-Driver: ni_tiocmd
-Description: National Instruments general purpose counters command support
-Devices:
-Author: J.P. Mellor <jpmellor@rose-hulman.edu>,
-	Herman.Bruyninckx@mech.kuleuven.ac.be,
-	Wim.Meeussen@mech.kuleuven.ac.be,
-	Klaas.Gadeyne@mech.kuleuven.ac.be,
-	Frank Mori Hess <fmhess@users.sourceforge.net>
-Updated: Fri, 11 Apr 2008 12:32:35 +0100
-Status: works
+ * Module: ni_tiocmd
+ * Description: National Instruments general purpose counters command support
+ * Author: J.P. Mellor <jpmellor@rose-hulman.edu>,
+ *         Herman.Bruyninckx@mech.kuleuven.ac.be,
+ *         Wim.Meeussen@mech.kuleuven.ac.be,
+ *         Klaas.Gadeyne@mech.kuleuven.ac.be,
+ *         Frank Mori Hess <fmhess@users.sourceforge.net>
+ * Updated: Fri, 11 Apr 2008 12:32:35 +0100
+ * Status: works
+ *
+ * This module is not used directly by end-users.  Rather, it
+ * is used by other drivers (for example ni_660x and ni_pcimio)
+ * to provide command support for NI's general purpose counters.
+ * It was originally split out of ni_tio.c to stop the 'ni_tio'
+ * module depending on the 'mite' module.
+ *
+ * References:
+ * DAQ 660x Register-Level Programmer Manual  (NI 370505A-01)
+ * DAQ 6601/6602 User Manual (NI 322137B-01)
+ * 340934b.pdf  DAQ-STC reference manual
+ */
 
-This module is not used directly by end-users.  Rather, it
-is used by other drivers (for example ni_660x and ni_pcimio)
-to provide command support for NI's general purpose counters.
-It was originally split out of ni_tio.c to stop the 'ni_tio'
-module depending on the 'mite' module.
-
-References:
-DAQ 660x Register-Level Programmer Manual  (NI 370505A-01)
-DAQ 6601/6602 User Manual (NI 322137B-01)
-340934b.pdf  DAQ-STC reference manual
-
-*/
 /*
 TODO:
 	Support use of both banks X and Y
diff --git a/drivers/staging/comedi/drivers/pcl711.c b/drivers/staging/comedi/drivers/pcl711.c
index 938aebc..cb7e4c3 100644
--- a/drivers/staging/comedi/drivers/pcl711.c
+++ b/drivers/staging/comedi/drivers/pcl711.c
@@ -22,10 +22,8 @@
 /*
  * Driver: pcl711
  * Description: Advantech PCL-711 and 711b, ADLink ACL-8112
- * Devices: (Advantech) PCL-711 [pcl711]
- *	    (Advantech) PCL-711B [pcl711b]
- *	    (AdLink) ACL-8112HG [acl8112hg]
- *	    (AdLink) ACL-8112DG [acl8112dg]
+ * Devices: [Advantech] PCL-711 (pcl711), PCL-711B (pcl711b),
+ *   [ADLink] ACL-8112HG (acl8112hg), ACL-8112DG (acl8112dg)
  * Author: David A. Schleef <ds@schleef.org>
  *	   Janne Jalkanen <jalkanen@cs.hut.fi>
  *	   Eric Bunn <ebu@cs.hut.fi>
diff --git a/drivers/staging/comedi/drivers/pcl724.c b/drivers/staging/comedi/drivers/pcl724.c
index fcc4408..74b07e1 100644
--- a/drivers/staging/comedi/drivers/pcl724.c
+++ b/drivers/staging/comedi/drivers/pcl724.c
@@ -8,14 +8,10 @@
 /*
  * Driver: pcl724
  * Description: Comedi driver for 8255 based ISA DIO boards
- * Devices: (Advantech) PCL-724 [pcl724]
- *	    (Advantech) PCL-722 [pcl722]
- *	    (Advantech) PCL-731 [pcl731]
- *	    (ADLink) ACL-7122 [acl7122]
- *	    (ADLink) ACL-7124 [acl7124]
- *	    (ADLink) PET-48DIO [pet48dio]
- *	    (WinSystems) PCM-IO48 [pcmio48]
- *	    (Diamond Systems) ONYX-MM-DIO [onyx-mm-dio]
+ * Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731),
+ *  [ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio),
+ *  [WinSystems] PCM-IO48 (pcmio48),
+ *  [Diamond Systems] ONYX-MM-DIO (onyx-mm-dio)
  * Author: Michal Dobes <dobes@tesnet.cz>
  * Status: untested
  *
diff --git a/drivers/staging/comedi/drivers/pcl726.c b/drivers/staging/comedi/drivers/pcl726.c
index 86f713f..4079815 100644
--- a/drivers/staging/comedi/drivers/pcl726.c
+++ b/drivers/staging/comedi/drivers/pcl726.c
@@ -21,11 +21,8 @@
  * Description: Advantech PCL-726 & compatibles
  * Author: David A. Schleef <ds@schleef.org>
  * Status: untested
- * Devices: (Advantech) PCL-726 [pcl726]
- *	    (Advantech) PCL-727 [pcl727]
- *	    (Advantech) PCL-728 [pcl728]
- *	    (ADLink) ACL-6126 [acl6126]
- *	    (ADLink) ACL-6128 [acl6128]
+ * Devices: [Advantech] PCL-726 (pcl726), PCL-727 (pcl727), PCL-728 (pcl728),
+ *   [ADLink] ACL-6126 (acl6126), ACL-6128 (acl6128)
  *
  * Configuration Options:
  *   [0]  - IO Base
diff --git a/drivers/staging/comedi/drivers/pcl730.c b/drivers/staging/comedi/drivers/pcl730.c
index a6c5770..ce958ee 100644
--- a/drivers/staging/comedi/drivers/pcl730.c
+++ b/drivers/staging/comedi/drivers/pcl730.c
@@ -7,19 +7,12 @@
 /*
  * Driver: pcl730
  * Description: Advantech PCL-730 (& compatibles)
- * Devices: (Advantech) PCL-730 [pcl730]
- *	    (ICP) ISO-730 [iso730]
- *	    (Adlink) ACL-7130 [acl7130]
- *	    (Advantech) PCM-3730 [pcm3730]
- *	    (Advantech) PCL-725 [pcl725]
- *	    (ICP) P8R8-DIO [p16r16dio]
- *	    (Adlink) ACL-7225b [acl7225b]
- *	    (ICP) P16R16-DIO [p16r16dio]
- *	    (Advantech) PCL-733 [pcl733]
- *	    (Advantech) PCL-734 [pcl734]
- *	    (Diamond Systems) OPMM-1616-XT [opmm-1616-xt]
- *	    (Diamond Systems) PEARL-MM-P [prearl-mm-p]
- *	    (Diamond Systems) IR104-PBF [ir104-pbf]
+ * Devices: [Advantech] PCL-730 (pcl730), PCM-3730 (pcm3730), PCL-725 (pcl725),
+ *   PCL-733 (pcl733), PCL-734 (pcl734),
+ *   [ADLink] ACL-7130 (acl7130), ACL-7225b (acl7225b),
+ *   [ICP] ISO-730 (iso730), P8R8-DIO (p8r8dio), P16R16-DIO (p16r16dio),
+ *   [Diamond Systems] OPMM-1616-XT (opmm-1616-xt), PEARL-MM-P (pearl-mm-p),
+ *   IR104-PBF (ir104-pbf),
  * Author: José Luis Sánchez (jsanchezv@teleline.es)
  * Status: untested
  *
diff --git a/drivers/staging/comedi/drivers/pcl812.c b/drivers/staging/comedi/drivers/pcl812.c
index ac243ca..f76601aa 100644
--- a/drivers/staging/comedi/drivers/pcl812.c
+++ b/drivers/staging/comedi/drivers/pcl812.c
@@ -111,12 +111,12 @@
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/gfp.h>
-#include "../comedidev.h"
-
 #include <linux/delay.h>
 #include <linux/io.h>
-#include <asm/dma.h>
 
+#include "../comedidev.h"
+
+#include "comedi_isadma.h"
 #include "comedi_fc.h"
 #include "8253.h"
 
@@ -507,19 +507,11 @@
 };
 
 struct pcl812_private {
-	unsigned char dma;	/*  >0 use dma ( usedDMA channel) */
+	struct comedi_isadma *dma;
 	unsigned char range_correction;	/*  =1 we must add 1 to range number */
 	unsigned int last_ai_chanspec;
 	unsigned char mode_reg_int;	/*  there is stored INT number for some card */
 	unsigned int ai_poll_ptr;	/*  how many sampes transfer poll */
-	unsigned int dmapages;
-	unsigned int hwdmasize;
-	unsigned long dmabuf[2];	/*  PTR to DMA buf */
-	unsigned int hwdmaptr[2];	/*  HW PTR to DMA buf */
-	unsigned int dmabytestomove[2];	/*  how many bytes DMA transfer */
-	int next_dma_buf;	/*  which buffer is next to use */
-	unsigned int dma_runs_to_end;	/*  how many times we must switch DMA buffers */
-	unsigned int last_dma_run;	/*  how many bytes to transfer on last DMA buffer */
 	unsigned int max_812_ai_mode0_rangewait;	/*  setling time for gain */
 	unsigned int divisor1;
 	unsigned int divisor2;
@@ -546,90 +538,32 @@
 }
 
 static void pcl812_ai_setup_dma(struct comedi_device *dev,
-				struct comedi_subdevice *s)
+				struct comedi_subdevice *s,
+				unsigned int unread_samples)
 {
 	struct pcl812_private *devpriv = dev->private;
-	struct comedi_cmd *cmd = &s->async->cmd;
-	unsigned int dma_flags;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
 	unsigned int bytes;
+	unsigned int max_samples;
+	unsigned int nsamples;
 
-	/*  we use EOS, so adapt DMA buffer to one scan */
-	if (devpriv->ai_eos) {
-		devpriv->dmabytestomove[0] = comedi_bytes_per_scan(s);
-		devpriv->dmabytestomove[1] = comedi_bytes_per_scan(s);
-		devpriv->dma_runs_to_end = 1;
-	} else {
-		devpriv->dmabytestomove[0] = devpriv->hwdmasize;
-		devpriv->dmabytestomove[1] = devpriv->hwdmasize;
-		if (s->async->prealloc_bufsz < devpriv->hwdmasize) {
-			devpriv->dmabytestomove[0] =
-				s->async->prealloc_bufsz;
-			devpriv->dmabytestomove[1] =
-				s->async->prealloc_bufsz;
-		}
-		if (cmd->stop_src == TRIG_NONE) {
-			devpriv->dma_runs_to_end = 1;
-		} else {
-			/*  how many samples we must transfer? */
-			bytes = cmd->stop_arg * comedi_bytes_per_scan(s);
+	comedi_isadma_disable(dma->chan);
 
-			/*  how many DMA pages we must fill */
-			devpriv->dma_runs_to_end =
-				bytes / devpriv->dmabytestomove[0];
+	/* if using EOS, adapt DMA buffer to one scan */
+	bytes = devpriv->ai_eos ? comedi_bytes_per_scan(s) : desc->maxsize;
+	max_samples = comedi_bytes_to_samples(s, bytes);
 
-			/* on last dma transfer must be moved */
-			devpriv->last_dma_run =
-				bytes % devpriv->dmabytestomove[0];
-			if (devpriv->dma_runs_to_end == 0)
-				devpriv->dmabytestomove[0] =
-					devpriv->last_dma_run;
-			devpriv->dma_runs_to_end--;
-		}
+	/*
+	 * Determine dma size based on the buffer size plus the number of
+	 * unread samples and the number of samples remaining in the command.
+	 */
+	nsamples = comedi_nsamples_left(s, max_samples + unread_samples);
+	if (nsamples > max_samples) {
+		nsamples -= max_samples;
+		desc->size = comedi_samples_to_bytes(s, nsamples);
+		comedi_isadma_program(desc);
 	}
-	if (devpriv->dmabytestomove[0] > devpriv->hwdmasize) {
-		devpriv->dmabytestomove[0] = devpriv->hwdmasize;
-		devpriv->ai_eos = 0;
-	}
-	if (devpriv->dmabytestomove[1] > devpriv->hwdmasize) {
-		devpriv->dmabytestomove[1] = devpriv->hwdmasize;
-		devpriv->ai_eos = 0;
-	}
-	devpriv->next_dma_buf = 0;
-	set_dma_mode(devpriv->dma, DMA_MODE_READ);
-	dma_flags = claim_dma_lock();
-	clear_dma_ff(devpriv->dma);
-	set_dma_addr(devpriv->dma, devpriv->hwdmaptr[0]);
-	set_dma_count(devpriv->dma, devpriv->dmabytestomove[0]);
-	release_dma_lock(dma_flags);
-	enable_dma(devpriv->dma);
-}
-
-static void pcl812_ai_setup_next_dma(struct comedi_device *dev,
-				     struct comedi_subdevice *s)
-{
-	struct pcl812_private *devpriv = dev->private;
-	unsigned long dma_flags;
-
-	devpriv->next_dma_buf = 1 - devpriv->next_dma_buf;
-	disable_dma(devpriv->dma);
-	set_dma_mode(devpriv->dma, DMA_MODE_READ);
-	dma_flags = claim_dma_lock();
-	set_dma_addr(devpriv->dma, devpriv->hwdmaptr[devpriv->next_dma_buf]);
-	if (devpriv->ai_eos) {
-		set_dma_count(devpriv->dma,
-			      devpriv->dmabytestomove[devpriv->next_dma_buf]);
-	} else {
-		if (devpriv->dma_runs_to_end) {
-			set_dma_count(devpriv->dma,
-				      devpriv->dmabytestomove[devpriv->
-							      next_dma_buf]);
-		} else {
-			set_dma_count(devpriv->dma, devpriv->last_dma_run);
-		}
-		devpriv->dma_runs_to_end--;
-	}
-	release_dma_lock(dma_flags);
-	enable_dma(devpriv->dma);
 }
 
 static void pcl812_ai_set_chan_range(struct comedi_device *dev,
@@ -786,6 +720,7 @@
 static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct pcl812_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
 	struct comedi_cmd *cmd = &s->async->cmd;
 	unsigned int ctrl = 0;
 	unsigned int i;
@@ -794,7 +729,7 @@
 
 	pcl812_ai_set_chan_range(dev, cmd->chanlist[0], 1);
 
-	if (devpriv->dma) {	/*  check if we can use DMA transfer */
+	if (dma) {	/*  check if we can use DMA transfer */
 		devpriv->ai_dma = 1;
 		for (i = 1; i < cmd->chanlist_len; i++)
 			if (cmd->chanlist[0] != cmd->chanlist[i]) {
@@ -817,8 +752,11 @@
 			devpriv->ai_dma = 0;
 	}
 
-	if (devpriv->ai_dma)
-		pcl812_ai_setup_dma(dev, s);
+	if (devpriv->ai_dma) {
+		/* setup and enable dma for the first buffer */
+		dma->cur_dma = 0;
+		pcl812_ai_setup_dma(dev, s, 0);
+	}
 
 	switch (cmd->convert_src) {
 	case TRIG_TIMER:
@@ -895,19 +833,21 @@
 			      struct comedi_subdevice *s)
 {
 	struct pcl812_private *devpriv = dev->private;
-	int len, bufptr;
-	unsigned short *ptr;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
+	unsigned int nsamples;
+	int bufptr;
 
-	ptr = (unsigned short *)devpriv->dmabuf[devpriv->next_dma_buf];
-	len = (devpriv->dmabytestomove[devpriv->next_dma_buf] >> 1) -
-	    devpriv->ai_poll_ptr;
-
-	pcl812_ai_setup_next_dma(dev, s);
-
+	nsamples = comedi_bytes_to_samples(s, desc->size) -
+		   devpriv->ai_poll_ptr;
 	bufptr = devpriv->ai_poll_ptr;
 	devpriv->ai_poll_ptr = 0;
 
-	transfer_from_dma_buf(dev, s, ptr, bufptr, len);
+	/* restart dma with the next buffer */
+	dma->cur_dma = 1 - dma->cur_dma;
+	pcl812_ai_setup_dma(dev, s, nsamples);
+
+	transfer_from_dma_buf(dev, s, desc->virt_addr, bufptr, nsamples);
 }
 
 static irqreturn_t pcl812_interrupt(int irq, void *d)
@@ -935,45 +875,37 @@
 static int pcl812_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct pcl812_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc;
 	unsigned long flags;
-	unsigned int top1, top2, i;
+	unsigned int poll;
+	int ret;
 
+	/* poll is valid only for DMA transfer */
 	if (!devpriv->ai_dma)
-		return 0;	/*  poll is valid only for DMA transfer */
+		return 0;
 
 	spin_lock_irqsave(&dev->spinlock, flags);
 
-	for (i = 0; i < 10; i++) {
-		/*  where is now DMA */
-		top1 = get_dma_residue(devpriv->ai_dma);
-		top2 = get_dma_residue(devpriv->ai_dma);
-		if (top1 == top2)
-			break;
-	}
+	poll = comedi_isadma_poll(dma);
+	poll = comedi_bytes_to_samples(s, poll);
+	if (poll > devpriv->ai_poll_ptr) {
+		desc = &dma->desc[dma->cur_dma];
+		transfer_from_dma_buf(dev, s, desc->virt_addr,
+				      devpriv->ai_poll_ptr,
+				      poll - devpriv->ai_poll_ptr);
+		/* new buffer position */
+		devpriv->ai_poll_ptr = poll;
 
-	if (top1 != top2) {
-		spin_unlock_irqrestore(&dev->spinlock, flags);
-		return 0;
+		ret = comedi_buf_n_bytes_ready(s);
+	} else {
+		/* no new samples */
+		ret = 0;
 	}
-	/*  where is now DMA in buffer */
-	top1 = devpriv->dmabytestomove[1 - devpriv->next_dma_buf] - top1;
-	top1 >>= 1;		/*  sample position */
-	top2 = top1 - devpriv->ai_poll_ptr;
-	if (top2 < 1) {		/*  no new samples */
-		spin_unlock_irqrestore(&dev->spinlock, flags);
-		return 0;
-	}
-
-	transfer_from_dma_buf(dev, s,
-			      (void *)devpriv->dmabuf[1 -
-						      devpriv->next_dma_buf],
-			      devpriv->ai_poll_ptr, top2);
-
-	devpriv->ai_poll_ptr = top1;	/*  new buffer position */
 
 	spin_unlock_irqrestore(&dev->spinlock, flags);
 
-	return comedi_buf_n_bytes_ready(s);
+	return ret;
 }
 
 static int pcl812_ai_cancel(struct comedi_device *dev,
@@ -982,7 +914,7 @@
 	struct pcl812_private *devpriv = dev->private;
 
 	if (devpriv->ai_dma)
-		disable_dma(devpriv->dma);
+		comedi_isadma_disable(devpriv->dma->chan);
 
 	outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
 	     dev->iobase + PCL812_CTRL_REG);
@@ -1192,6 +1124,27 @@
 	}
 }
 
+static void pcl812_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
+{
+	struct pcl812_private *devpriv = dev->private;
+
+	/* only DMA channels 3 and 1 are valid */
+	if (!(dma_chan == 3 || dma_chan == 1))
+		return;
+
+	/* DMA uses two 8K buffers */
+	devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
+					   PAGE_SIZE * 2, COMEDI_ISADMA_READ);
+}
+
+static void pcl812_free_dma(struct comedi_device *dev)
+{
+	struct pcl812_private *devpriv = dev->private;
+
+	if (devpriv)
+		comedi_isadma_free(devpriv->dma);
+}
+
 static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
 	const struct pcl812_board *board = dev->board_ptr;
@@ -1200,7 +1153,6 @@
 	int n_subdevices;
 	int subdev;
 	int ret;
-	int i;
 
 	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 	if (!devpriv)
@@ -1218,31 +1170,8 @@
 	}
 
 	/* we need an IRQ to do DMA on channel 3 or 1 */
-	if (dev->irq && board->has_dma &&
-	    (it->options[2] == 3 || it->options[2] == 1)) {
-		ret = request_dma(it->options[2], dev->board_name);
-		if (ret) {
-			dev_err(dev->class_dev,
-				"unable to request DMA channel %d\n",
-				it->options[2]);
-			return -EBUSY;
-		}
-		devpriv->dma = it->options[2];
-
-		devpriv->dmapages = 1;	/* we want 8KB */
-		devpriv->hwdmasize = (1 << devpriv->dmapages) * PAGE_SIZE;
-
-		for (i = 0; i < 2; i++) {
-			unsigned long dmabuf;
-
-			dmabuf =  __get_dma_pages(GFP_KERNEL, devpriv->dmapages);
-			if (!dmabuf)
-				return -ENOMEM;
-
-			devpriv->dmabuf[i] = dmabuf;
-			devpriv->hwdmaptr[i] = virt_to_bus((void *)dmabuf);
-		}
-	}
+	if (dev->irq && board->has_dma)
+		 pcl812_alloc_dma(dev, it->options[2]);
 
 	/* differential analog inputs? */
 	switch (board->board_type) {
@@ -1384,16 +1313,7 @@
 
 static void pcl812_detach(struct comedi_device *dev)
 {
-	struct pcl812_private *devpriv = dev->private;
-
-	if (devpriv) {
-		if (devpriv->dmabuf[0])
-			free_pages(devpriv->dmabuf[0], devpriv->dmapages);
-		if (devpriv->dmabuf[1])
-			free_pages(devpriv->dmabuf[1], devpriv->dmapages);
-		if (devpriv->dma)
-			free_dma(devpriv->dma);
-	}
+	pcl812_free_dma(dev);
 	comedi_legacy_detach(dev);
 }
 
diff --git a/drivers/staging/comedi/drivers/pcl816.c b/drivers/staging/comedi/drivers/pcl816.c
index 73deb4b..da35edf 100644
--- a/drivers/staging/comedi/drivers/pcl816.c
+++ b/drivers/staging/comedi/drivers/pcl816.c
@@ -33,14 +33,14 @@
 */
 
 #include <linux/module.h>
-#include "../comedidev.h"
-
 #include <linux/gfp.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/interrupt.h>
-#include <asm/dma.h>
 
+#include "../comedidev.h"
+
+#include "comedi_isadma.h"
 #include "comedi_fc.h"
 #include "8253.h"
 
@@ -114,14 +114,7 @@
 };
 
 struct pcl816_private {
-	unsigned int dma;	/*  used DMA, 0=don't use DMA */
-	unsigned int dmapages;
-	unsigned int hwdmasize;
-	unsigned long dmabuf[2];	/*  pointers to begin of DMA buffers */
-	unsigned int hwdmaptr[2];	/*  hardware address of DMA buffers */
-	int next_dma_buf;	/*  which DMA buffer will be used next round */
-	long dma_runs_to_end;	/*  how many we must permorm DMA transfer to end of record */
-	unsigned long last_dma_run;	/*  how many bytes we must transfer on last DMA page */
+	struct comedi_isadma *dma;
 	unsigned int ai_poll_ptr;	/*  how many sampes transfer poll */
 	unsigned int divisor1;
 	unsigned int divisor2;
@@ -149,63 +142,27 @@
 }
 
 static void pcl816_ai_setup_dma(struct comedi_device *dev,
-				struct comedi_subdevice *s)
+				struct comedi_subdevice *s,
+				unsigned int unread_samples)
 {
 	struct pcl816_private *devpriv = dev->private;
-	struct comedi_cmd *cmd = &s->async->cmd;
-	unsigned int dma_flags;
-	unsigned int bytes;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
+	unsigned int max_samples = comedi_bytes_to_samples(s, desc->maxsize);
+	unsigned int nsamples;
 
-	bytes = devpriv->hwdmasize;
-	if (cmd->stop_src == TRIG_COUNT) {
-		/*  how many */
-		bytes = cmd->stop_arg * comedi_bytes_per_scan(s);
+	comedi_isadma_disable(dma->chan);
 
-		/*  how many DMA pages we must fill */
-		devpriv->dma_runs_to_end = bytes / devpriv->hwdmasize;
-
-		/* on last dma transfer must be moved */
-		devpriv->last_dma_run = bytes % devpriv->hwdmasize;
-		devpriv->dma_runs_to_end--;
-		if (devpriv->dma_runs_to_end >= 0)
-			bytes = devpriv->hwdmasize;
-	} else
-		devpriv->dma_runs_to_end = -1;
-
-	devpriv->next_dma_buf = 0;
-	set_dma_mode(devpriv->dma, DMA_MODE_READ);
-	dma_flags = claim_dma_lock();
-	clear_dma_ff(devpriv->dma);
-	set_dma_addr(devpriv->dma, devpriv->hwdmaptr[0]);
-	set_dma_count(devpriv->dma, bytes);
-	release_dma_lock(dma_flags);
-	enable_dma(devpriv->dma);
-}
-
-static void pcl816_ai_setup_next_dma(struct comedi_device *dev,
-				     struct comedi_subdevice *s)
-{
-	struct pcl816_private *devpriv = dev->private;
-	struct comedi_cmd *cmd = &s->async->cmd;
-	unsigned long dma_flags;
-
-	disable_dma(devpriv->dma);
-	if (devpriv->dma_runs_to_end > -1 || cmd->stop_src == TRIG_NONE) {
-		/* switch dma bufs */
-		devpriv->next_dma_buf = 1 - devpriv->next_dma_buf;
-		set_dma_mode(devpriv->dma, DMA_MODE_READ);
-		dma_flags = claim_dma_lock();
-		set_dma_addr(devpriv->dma,
-			     devpriv->hwdmaptr[devpriv->next_dma_buf]);
-		if (devpriv->dma_runs_to_end)
-			set_dma_count(devpriv->dma, devpriv->hwdmasize);
-		else
-			set_dma_count(devpriv->dma, devpriv->last_dma_run);
-		release_dma_lock(dma_flags);
-		enable_dma(devpriv->dma);
+	/*
+	 * Determine dma size based on the buffer maxsize plus the number of
+	 * unread samples and the number of samples remaining in the command.
+	 */
+	nsamples = comedi_nsamples_left(s, max_samples + unread_samples);
+	if (nsamples > unread_samples) {
+		nsamples -= unread_samples;
+		desc->size = comedi_samples_to_bytes(s, nsamples);
+		comedi_isadma_program(desc);
 	}
-
-	devpriv->dma_runs_to_end--;
 }
 
 static void pcl816_ai_set_chan_range(struct comedi_device *dev,
@@ -318,9 +275,10 @@
 	struct comedi_device *dev = d;
 	struct comedi_subdevice *s = dev->read_subdev;
 	struct pcl816_private *devpriv = dev->private;
-	unsigned short *ptr;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
+	unsigned int nsamples;
 	unsigned int bufptr;
-	unsigned int len;
 
 	if (!dev->attached || !devpriv->ai_cmd_running) {
 		pcl816_ai_clear_eoc(dev);
@@ -333,15 +291,16 @@
 		return IRQ_HANDLED;
 	}
 
-	ptr = (unsigned short *)devpriv->dmabuf[devpriv->next_dma_buf];
-
-	pcl816_ai_setup_next_dma(dev, s);
-
-	len = (devpriv->hwdmasize >> 1) - devpriv->ai_poll_ptr;
+	nsamples = comedi_bytes_to_samples(s, desc->size) -
+		   devpriv->ai_poll_ptr;
 	bufptr = devpriv->ai_poll_ptr;
 	devpriv->ai_poll_ptr = 0;
 
-	transfer_from_dma_buf(dev, s, ptr, bufptr, len);
+	/* restart dma with the next buffer */
+	dma->cur_dma = 1 - dma->cur_dma;
+	pcl816_ai_setup_dma(dev, s, nsamples);
+
+	transfer_from_dma_buf(dev, s, desc->virt_addr, bufptr, nsamples);
 
 	pcl816_ai_clear_eoc(dev);
 
@@ -483,6 +442,7 @@
 static int pcl816_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct pcl816_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
 	struct comedi_cmd *cmd = &s->async->cmd;
 	unsigned int ctrl;
 	unsigned int seglen;
@@ -502,7 +462,9 @@
 	devpriv->ai_poll_ptr = 0;
 	devpriv->ai_cmd_canceled = 0;
 
-	pcl816_ai_setup_dma(dev, s);
+	/* setup and enable dma for the first buffer */
+	dma->cur_dma = 0;
+	pcl816_ai_setup_dma(dev, s, 0);
 
 	pcl816_start_pacer(dev, true);
 
@@ -513,7 +475,8 @@
 		ctrl |= PCL816_CTRL_EXT_TRIG;
 
 	outb(ctrl, dev->iobase + PCL816_CTRL_REG);
-	outb((devpriv->dma << 4) | dev->irq, dev->iobase + PCL816_STATUS_REG);
+	outb((dma->chan << 4) | dev->irq,
+	     dev->iobase + PCL816_STATUS_REG);
 
 	return 0;
 }
@@ -521,42 +484,34 @@
 static int pcl816_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct pcl816_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc;
 	unsigned long flags;
-	unsigned int top1, top2, i;
+	unsigned int poll;
+	int ret;
 
 	spin_lock_irqsave(&dev->spinlock, flags);
 
-	for (i = 0; i < 20; i++) {
-		top1 = get_dma_residue(devpriv->dma);	/*  where is now DMA */
-		top2 = get_dma_residue(devpriv->dma);
-		if (top1 == top2)
-			break;
-	}
-	if (top1 != top2) {
-		spin_unlock_irqrestore(&dev->spinlock, flags);
-		return 0;
-	}
+	poll = comedi_isadma_poll(dma);
+	poll = comedi_bytes_to_samples(s, poll);
+	if (poll > devpriv->ai_poll_ptr) {
+		desc = &dma->desc[dma->cur_dma];
+		transfer_from_dma_buf(dev, s, desc->virt_addr,
+				      devpriv->ai_poll_ptr,
+				      poll - devpriv->ai_poll_ptr);
+		/* new buffer position */
+		devpriv->ai_poll_ptr = poll;
 
-	/*  where is now DMA in buffer */
-	top1 = devpriv->hwdmasize - top1;
-	top1 >>= 1;		/*  sample position */
-	top2 = top1 - devpriv->ai_poll_ptr;
-	if (top2 < 1) {		/*  no new samples */
-		spin_unlock_irqrestore(&dev->spinlock, flags);
-		return 0;
+		comedi_handle_events(dev, s);
+
+		ret = comedi_buf_n_bytes_ready(s);
+	} else {
+		/* no new samples */
+		ret = 0;
 	}
-
-	transfer_from_dma_buf(dev, s,
-			      (unsigned short *)devpriv->dmabuf[devpriv->
-								next_dma_buf],
-			      devpriv->ai_poll_ptr, top2);
-
-	devpriv->ai_poll_ptr = top1;	/*  new buffer position */
 	spin_unlock_irqrestore(&dev->spinlock, flags);
 
-	comedi_handle_events(dev, s);
-
-	return comedi_buf_n_bytes_ready(s);
+	return ret;
 }
 
 static int pcl816_ai_cancel(struct comedi_device *dev,
@@ -657,13 +612,44 @@
 	outb(0, dev->iobase + PCL816_DO_DI_MSB_REG);
 }
 
+static void pcl816_alloc_irq_and_dma(struct comedi_device *dev,
+				     struct comedi_devconfig *it)
+{
+	struct pcl816_private *devpriv = dev->private;
+	unsigned int irq_num = it->options[1];
+	unsigned int dma_chan = it->options[2];
+
+	/* only IRQs 2-7 and DMA channels 3 and 1 are valid */
+	if (!(irq_num >= 2 && irq_num <= 7) ||
+	    !(dma_chan == 3 || dma_chan == 1))
+		return;
+
+	if (request_irq(irq_num, pcl816_interrupt, 0, dev->board_name, dev))
+		return;
+
+	/* DMA uses two 16K buffers */
+	devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
+					   PAGE_SIZE * 4, COMEDI_ISADMA_READ);
+	if (!devpriv->dma)
+		free_irq(irq_num, dev);
+	else
+		dev->irq = irq_num;
+}
+
+static void pcl816_free_dma(struct comedi_device *dev)
+{
+	struct pcl816_private *devpriv = dev->private;
+
+	if (devpriv)
+		comedi_isadma_free(devpriv->dma);
+}
+
 static int pcl816_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
 	const struct pcl816_board *board = dev->board_ptr;
 	struct pcl816_private *devpriv;
 	struct comedi_subdevice *s;
 	int ret;
-	int i;
 
 	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 	if (!devpriv)
@@ -673,39 +659,8 @@
 	if (ret)
 		return ret;
 
-	/* we can use IRQ 2-7 for async command support */
-	if (it->options[1] >= 2 && it->options[1] <= 7) {
-		ret = request_irq(it->options[1], pcl816_interrupt, 0,
-				  dev->board_name, dev);
-		if (ret == 0)
-			dev->irq = it->options[1];
-	}
-
-	/* we need an IRQ to do DMA on channel 3 or 1 */
-	if (dev->irq && (it->options[2] == 3 || it->options[2] == 1)) {
-		ret = request_dma(it->options[2], dev->board_name);
-		if (ret) {
-			dev_err(dev->class_dev,
-				"unable to request DMA channel %d\n",
-				it->options[2]);
-			return -EBUSY;
-		}
-		devpriv->dma = it->options[2];
-
-		devpriv->dmapages = 2;	/* we need 16KB */
-		devpriv->hwdmasize = (1 << devpriv->dmapages) * PAGE_SIZE;
-
-		for (i = 0; i < 2; i++) {
-			unsigned long dmabuf;
-
-			dmabuf = __get_dma_pages(GFP_KERNEL, devpriv->dmapages);
-			if (!dmabuf)
-				return -ENOMEM;
-
-			devpriv->dmabuf[i] = dmabuf;
-			devpriv->hwdmaptr[i] = virt_to_bus((void *)dmabuf);
-		}
-	}
+	/* an IRQ and DMA are required to support async commands */
+	pcl816_alloc_irq_and_dma(dev, it);
 
 	ret = comedi_alloc_subdevices(dev, 4);
 	if (ret)
@@ -718,7 +673,7 @@
 	s->maxdata	= board->ai_maxdata;
 	s->range_table	= &range_pcl816;
 	s->insn_read	= pcl816_ai_insn_read;
-	if (devpriv->dma) {
+	if (dev->irq) {
 		dev->read_subdev = s;
 		s->subdev_flags	|= SDF_CMD_READ;
 		s->len_chanlist	= board->ai_chanlist;
@@ -764,18 +719,11 @@
 
 static void pcl816_detach(struct comedi_device *dev)
 {
-	struct pcl816_private *devpriv = dev->private;
-
 	if (dev->private) {
 		pcl816_ai_cancel(dev, dev->read_subdev);
 		pcl816_reset(dev);
-		if (devpriv->dma)
-			free_dma(devpriv->dma);
-		if (devpriv->dmabuf[0])
-			free_pages(devpriv->dmabuf[0], devpriv->dmapages);
-		if (devpriv->dmabuf[1])
-			free_pages(devpriv->dmabuf[1], devpriv->dmapages);
 	}
+	pcl816_free_dma(dev);
 	comedi_legacy_detach(dev);
 }
 
diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index 8edea35..ba2e137 100644
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -103,10 +103,10 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/interrupt.h>
-#include <asm/dma.h>
 
 #include "../comedidev.h"
 
+#include "comedi_isadma.h"
 #include "comedi_fc.h"
 #include "8253.h"
 
@@ -303,20 +303,12 @@
 };
 
 struct pcl818_private {
-	unsigned int dma;	/*  used DMA, 0=don't use DMA */
-	unsigned int dmapages;
-	unsigned int hwdmasize;
-	unsigned long dmabuf[2];	/*  pointers to begin of DMA buffers */
-	unsigned int hwdmaptr[2];	/*  hardware address of DMA buffers */
-	int next_dma_buf;	/*  which DMA buffer will be used next round */
-	long dma_runs_to_end;	/*  how many we must permorm DMA transfer to end of record */
-	unsigned long last_dma_run;	/*  how many bytes we must transfer on last DMA page */
+	struct comedi_isadma *dma;
 	unsigned int ns_min;	/*  manimal allowed delay between samples (in us) for actual card */
 	int i8253_osc_base;	/*  1/frequency of on board oscilator in ns */
 	unsigned int act_chanlist[16];	/*  MUX setting for actual AI operations */
 	unsigned int act_chanlist_len;	/*  how long is actual MUX list */
 	unsigned int act_chanlist_pos;	/*  actual position in MUX list */
-	unsigned int ai_data_len;	/*  len of data buffer */
 	unsigned int divisor1;
 	unsigned int divisor2;
 	unsigned int usefifo:1;
@@ -340,58 +332,27 @@
 }
 
 static void pcl818_ai_setup_dma(struct comedi_device *dev,
-				struct comedi_subdevice *s)
+				struct comedi_subdevice *s,
+				unsigned int unread_samples)
 {
 	struct pcl818_private *devpriv = dev->private;
-	struct comedi_cmd *cmd = &s->async->cmd;
-	unsigned int flags;
-	unsigned int bytes;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
+	unsigned int max_samples = comedi_bytes_to_samples(s, desc->maxsize);
+	unsigned int nsamples;
 
-	disable_dma(devpriv->dma);	/*  disable dma */
-	bytes = devpriv->hwdmasize;
-	if (cmd->stop_src == TRIG_COUNT) {
-		bytes = cmd->stop_arg * comedi_bytes_per_scan(s);
-		devpriv->dma_runs_to_end = bytes / devpriv->hwdmasize;
-		devpriv->last_dma_run = bytes % devpriv->hwdmasize;
-		devpriv->dma_runs_to_end--;
-		if (devpriv->dma_runs_to_end >= 0)
-			bytes = devpriv->hwdmasize;
+	comedi_isadma_disable(dma->chan);
+
+	/*
+	 * Determine dma size based on the buffer maxsize plus the number of
+	 * unread samples and the number of samples remaining in the command.
+	 */
+	nsamples = comedi_nsamples_left(s, max_samples + unread_samples);
+	if (nsamples > unread_samples) {
+		nsamples -= unread_samples;
+		desc->size = comedi_samples_to_bytes(s, nsamples);
+		comedi_isadma_program(desc);
 	}
-
-	devpriv->next_dma_buf = 0;
-	set_dma_mode(devpriv->dma, DMA_MODE_READ);
-	flags = claim_dma_lock();
-	clear_dma_ff(devpriv->dma);
-	set_dma_addr(devpriv->dma, devpriv->hwdmaptr[0]);
-	set_dma_count(devpriv->dma, bytes);
-	release_dma_lock(flags);
-	enable_dma(devpriv->dma);
-}
-
-static void pcl818_ai_setup_next_dma(struct comedi_device *dev,
-				     struct comedi_subdevice *s)
-{
-	struct pcl818_private *devpriv = dev->private;
-	struct comedi_cmd *cmd = &s->async->cmd;
-	unsigned long flags;
-
-	disable_dma(devpriv->dma);
-	devpriv->next_dma_buf = 1 - devpriv->next_dma_buf;
-	if (devpriv->dma_runs_to_end > -1 || cmd->stop_src == TRIG_NONE) {
-		/* switch dma bufs */
-		set_dma_mode(devpriv->dma, DMA_MODE_READ);
-		flags = claim_dma_lock();
-		set_dma_addr(devpriv->dma,
-			     devpriv->hwdmaptr[devpriv->next_dma_buf]);
-		if (devpriv->dma_runs_to_end || cmd->stop_src == TRIG_NONE)
-			set_dma_count(devpriv->dma, devpriv->hwdmasize);
-		else
-			set_dma_count(devpriv->dma, devpriv->last_dma_run);
-		release_dma_lock(flags);
-		enable_dma(devpriv->dma);
-	}
-
-	devpriv->dma_runs_to_end--;
 }
 
 static void pcl818_ai_set_chan_range(struct comedi_device *dev,
@@ -558,20 +519,20 @@
 			      struct comedi_subdevice *s)
 {
 	struct pcl818_private *devpriv = dev->private;
-	unsigned short *ptr;
+	struct comedi_isadma *dma = devpriv->dma;
+	struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
+	unsigned short *ptr = desc->virt_addr;
+	unsigned int nsamples = comedi_bytes_to_samples(s, desc->size);
 	unsigned int chan;
 	unsigned int val;
-	int i, len, bufptr;
+	int i;
 
-	pcl818_ai_setup_next_dma(dev, s);
+	/* restart dma with the next buffer */
+	dma->cur_dma = 1 - dma->cur_dma;
+	pcl818_ai_setup_dma(dev, s, nsamples);
 
-	ptr = (unsigned short *)devpriv->dmabuf[1 - devpriv->next_dma_buf];
-
-	len = devpriv->hwdmasize >> 1;
-	bufptr = 0;
-
-	for (i = 0; i < len; i++) {
-		val = ptr[bufptr++];
+	for (i = 0; i < nsamples; i++) {
+		val = ptr[i];
 		chan = val & 0xf;
 		val = (val >> 4) & s->maxdata;
 
@@ -804,6 +765,7 @@
 			 struct comedi_subdevice *s)
 {
 	struct pcl818_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
 	struct comedi_cmd *cmd = &s->async->cmd;
 	unsigned int ctrl = 0;
 	unsigned int seglen;
@@ -818,11 +780,9 @@
 		return -EINVAL;
 	pcl818_ai_setup_chanlist(dev, cmd->chanlist, seglen);
 
-	devpriv->ai_data_len = s->async->prealloc_bufsz;
 	devpriv->ai_cmd_running = 1;
 	devpriv->ai_cmd_canceled = 0;
 	devpriv->act_chanlist_pos = 0;
-	devpriv->dma_runs_to_end = 0;
 
 	if (cmd->convert_src == TRIG_TIMER)
 		ctrl |= PCL818_CTRL_PACER_TRIG;
@@ -831,8 +791,10 @@
 
 	outb(PCL818_CNTENABLE_PACER_ENA, dev->iobase + PCL818_CNTENABLE_REG);
 
-	if (devpriv->dma) {
-		pcl818_ai_setup_dma(dev, s);
+	if (dma) {
+		/* setup and enable dma for the first buffer */
+		dma->cur_dma = 0;
+		pcl818_ai_setup_dma(dev, s, 0);
 
 		ctrl |= PCL818_CTRL_INTE | PCL818_CTRL_IRQ(dev->irq) |
 			PCL818_CTRL_DMAE;
@@ -854,12 +816,13 @@
 			    struct comedi_subdevice *s)
 {
 	struct pcl818_private *devpriv = dev->private;
+	struct comedi_isadma *dma = devpriv->dma;
 	struct comedi_cmd *cmd = &s->async->cmd;
 
 	if (!devpriv->ai_cmd_running)
 		return 0;
 
-	if (devpriv->dma) {
+	if (dma) {
 		if (cmd->stop_src == TRIG_NONE ||
 		    (cmd->stop_src == TRIG_COUNT &&
 		     s->async->scans_done < cmd->stop_arg)) {
@@ -872,7 +835,7 @@
 				return 0;
 			}
 		}
-		disable_dma(devpriv->dma);
+		comedi_isadma_disable(dma->chan);
 	}
 
 	outb(PCL818_CTRL_DISABLE_TRIG, dev->iobase + PCL818_CTRL_REG);
@@ -1054,13 +1017,33 @@
 	}
 }
 
+static void pcl818_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
+{
+	struct pcl818_private *devpriv = dev->private;
+
+	/* only DMA channels 3 and 1 are valid */
+	if (!(dma_chan == 3 || dma_chan == 1))
+		return;
+
+	/* DMA uses two 16K buffers */
+	devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
+					   PAGE_SIZE * 4, COMEDI_ISADMA_READ);
+}
+
+static void pcl818_free_dma(struct comedi_device *dev)
+{
+	struct pcl818_private *devpriv = dev->private;
+
+	if (devpriv)
+		comedi_isadma_free(devpriv->dma);
+}
+
 static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
 	const struct pcl818_board *board = dev->board_ptr;
 	struct pcl818_private *devpriv;
 	struct comedi_subdevice *s;
 	int ret;
-	int i;
 
 	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 	if (!devpriv)
@@ -1084,31 +1067,8 @@
 		devpriv->usefifo = 1;
 
 	/* we need an IRQ to do DMA on channel 3 or 1 */
-	if (dev->irq && board->has_dma &&
-	    (it->options[2] == 3 || it->options[2] == 1)) {
-		ret = request_dma(it->options[2], dev->board_name);
-		if (ret) {
-			dev_err(dev->class_dev,
-				"unable to request DMA channel %d\n",
-				it->options[2]);
-			return -EBUSY;
-		}
-		devpriv->dma = it->options[2];
-
-		devpriv->dmapages = 2;	/* we need 16KB */
-		devpriv->hwdmasize = (1 << devpriv->dmapages) * PAGE_SIZE;
-
-		for (i = 0; i < 2; i++) {
-			unsigned long dmabuf;
-
-			dmabuf = __get_dma_pages(GFP_KERNEL, devpriv->dmapages);
-			if (!dmabuf)
-				return -ENOMEM;
-
-			devpriv->dmabuf[i] = dmabuf;
-			devpriv->hwdmaptr[i] = virt_to_bus((void *)dmabuf);
-		}
-	}
+	if (dev->irq && board->has_dma)
+		pcl818_alloc_dma(dev, it->options[2]);
 
 	ret = comedi_alloc_subdevices(dev, 4);
 	if (ret)
@@ -1210,13 +1170,8 @@
 	if (devpriv) {
 		pcl818_ai_cancel(dev, dev->read_subdev);
 		pcl818_reset(dev);
-		if (devpriv->dma)
-			free_dma(devpriv->dma);
-		if (devpriv->dmabuf[0])
-			free_pages(devpriv->dmabuf[0], devpriv->dmapages);
-		if (devpriv->dmabuf[1])
-			free_pages(devpriv->dmabuf[1], devpriv->dmapages);
 	}
+	pcl818_free_dma(dev);
 	comedi_legacy_detach(dev);
 }
 
diff --git a/drivers/staging/comedi/drivers/pcmad.c b/drivers/staging/comedi/drivers/pcmad.c
index e3ac8ac..12f94fe 100644
--- a/drivers/staging/comedi/drivers/pcmad.c
+++ b/drivers/staging/comedi/drivers/pcmad.c
@@ -19,8 +19,7 @@
 /*
  * Driver: pcmad
  * Description: Winsystems PCM-A/D12, PCM-A/D16
- * Devices: (Winsystems) PCM-A/D12 [pcmad12]
- *	    (Winsystems) PCM-A/D16 [pcmad16]
+ * Devices: [Winsystems] PCM-A/D12 (pcmad12), PCM-A/D16 (pcmad16)
  * Author: ds
  * Status: untested
  *
diff --git a/drivers/staging/comedi/drivers/pcmda12.c b/drivers/staging/comedi/drivers/pcmda12.c
index 59108c0..d86c5e2 100644
--- a/drivers/staging/comedi/drivers/pcmda12.c
+++ b/drivers/staging/comedi/drivers/pcmda12.c
@@ -19,7 +19,7 @@
 /*
  * Driver: pcmda12
  * Description: A driver for the Winsystems PCM-D/A-12
- * Devices: (Winsystems) PCM-D/A-12 [pcmda12]
+ * Devices: [Winsystems] PCM-D/A-12 (pcmda12)
  * Author: Calin Culianu <calin@ajvar.org>
  * Updated: Fri, 13 Jan 2006 12:01:01 -0500
  * Status: works
diff --git a/drivers/staging/comedi/drivers/pcmmio.c b/drivers/staging/comedi/drivers/pcmmio.c
index f0059e9..2c0e7ec 100644
--- a/drivers/staging/comedi/drivers/pcmmio.c
+++ b/drivers/staging/comedi/drivers/pcmmio.c
@@ -19,7 +19,7 @@
 /*
  * Driver: pcmmio
  * Description: A driver for the PCM-MIO multifunction board
- * Devices: (Winsystems) PCM-MIO [pcmmio]
+ * Devices: [Winsystems] PCM-MIO (pcmmio)
  * Author: Calin Culianu <calin@ajvar.org>
  * Updated: Wed, May 16 2007 16:21:10 -0500
  * Status: works
diff --git a/drivers/staging/comedi/drivers/pcmuio.c b/drivers/staging/comedi/drivers/pcmuio.c
index 0f5483b..a1641d9 100644
--- a/drivers/staging/comedi/drivers/pcmuio.c
+++ b/drivers/staging/comedi/drivers/pcmuio.c
@@ -19,8 +19,7 @@
 /*
  * Driver: pcmuio
  * Description: Winsystems PC-104 based 48/96-channel DIO boards.
- * Devices: (Winsystems) PCM-UIO48A [pcmuio48]
- *	    (Winsystems) PCM-UIO96A [pcmuio96]
+ * Devices: [Winsystems] PCM-UIO48A (pcmuio48), PCM-UIO96A (pcmuio96)
  * Author: Calin Culianu <calin@ajvar.org>
  * Updated: Fri, 13 Jan 2006 12:01:01 -0500
  * Status: works
diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c
index 581aa58..06ae436 100644
--- a/drivers/staging/comedi/drivers/rtd520.c
+++ b/drivers/staging/comedi/drivers/rtd520.c
@@ -19,10 +19,8 @@
 /*
  * Driver: rtd520
  * Description: Real Time Devices PCI4520/DM7520
- * Devices: (Real Time Devices) DM7520HR-1 [DM7520]
- *	    (Real Time Devices) DM7520HR-8 [DM7520]
- *	    (Real Time Devices) PCI4520 [PCI4520]
- *	    (Real Time Devices) PCI4520-8 [PCI4520]
+ * Devices: [Real Time Devices] DM7520HR-1 (DM7520), DM7520HR-8,
+ *   PCI4520 (PCI4520), PCI4520-8
  * Author: Dan Christian
  * Status: Works. Only tested on DM7520-8. Not SMP safe.
  *
diff --git a/drivers/staging/comedi/drivers/rti800.c b/drivers/staging/comedi/drivers/rti800.c
index 67b4b37..340ac77 100644
--- a/drivers/staging/comedi/drivers/rti800.c
+++ b/drivers/staging/comedi/drivers/rti800.c
@@ -19,8 +19,7 @@
 /*
  * Driver: rti800
  * Description: Analog Devices RTI-800/815
- * Devices: (Analog Devices) RTI-800 [rti800]
- *	    (Analog Devices) RTI-815 [rti815]
+ * Devices: [Analog Devices] RTI-800 (rti800), RTI-815 (rti815)
  * Author: David A. Schleef <ds@schleef.org>
  * Status: unknown
  * Updated: Fri, 05 Sep 2008 14:50:44 +0100
diff --git a/drivers/staging/comedi/drivers/rti802.c b/drivers/staging/comedi/drivers/rti802.c
index 96c3974..6db58fc 100644
--- a/drivers/staging/comedi/drivers/rti802.c
+++ b/drivers/staging/comedi/drivers/rti802.c
@@ -20,7 +20,7 @@
  * Driver: rti802
  * Description: Analog Devices RTI-802
  * Author: Anders Blomdell <anders.blomdell@control.lth.se>
- * Devices: (Analog Devices) RTI-802 [rti802]
+ * Devices: [Analog Devices] RTI-802 (rti802)
  * Status: works
  *
  * Configuration Options:
diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c
index 14932c5..fc497dd 100644
--- a/drivers/staging/comedi/drivers/s626.c
+++ b/drivers/staging/comedi/drivers/s626.c
@@ -118,7 +118,7 @@
 static void s626_mc_disable(struct comedi_device *dev,
 			    unsigned int cmd, unsigned int reg)
 {
-	writel(cmd << 16 , dev->mmio + reg);
+	writel(cmd << 16, dev->mmio + reg);
 	mmiowb();
 }
 
diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index 4737dbf..0683d6a 100644
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -16,10 +16,11 @@
 /*
  * Driver: usbdux
  * Description: University of Stirling USB DAQ & INCITE Technology Limited
- * Devices: (ITL) USB-DUX [usbdux]
+ * Devices: [ITL] USB-DUX (usbdux)
  * Author: Bernd Porr <mail@berndporr.me.uk>
  * Updated: 10 Oct 2014
  * Status: Stable
+ *
  * Connection scheme for the counter at the digital port:
  * 0=/CLK0, 1=UP/DOWN0, 2=RESET0, 4=/CLK1, 5=UP/DOWN1, 6=RESET1.
  * The sampling rate of the counter is approximately 500Hz.
diff --git a/drivers/staging/comedi/drivers/usbduxfast.c b/drivers/staging/comedi/drivers/usbduxfast.c
index ddc4cb9..85071da 100644
--- a/drivers/staging/comedi/drivers/usbduxfast.c
+++ b/drivers/staging/comedi/drivers/usbduxfast.c
@@ -15,7 +15,7 @@
 /*
  * Driver: usbduxfast
  * Description: University of Stirling USB DAQ & INCITE Technology Limited
- * Devices: (ITL) USB-DUX [usbduxfast]
+ * Devices: [ITL] USB-DUX-FAST (usbduxfast)
  * Author: Bernd Porr <mail@berndporr.me.uk>
  * Updated: 10 Oct 2014
  * Status: stable
diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c
index dc19435..17e5a81 100644
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -16,7 +16,7 @@
 /*
  * Driver: usbduxsigma
  * Description: University of Stirling USB DAQ & INCITE Technology Limited
- * Devices: (ITL) USB-DUX [usbduxsigma]
+ * Devices: [ITL] USB-DUX-SIGMA (usbduxsigma)
  * Author: Bernd Porr <mail@berndporr.me.uk>
  * Updated: 10 Oct 2014
  * Status: stable
diff --git a/drivers/staging/comedi/drivers/vmk80xx.c b/drivers/staging/comedi/drivers/vmk80xx.c
index a19a56e..5312e0ff 100644
--- a/drivers/staging/comedi/drivers/vmk80xx.c
+++ b/drivers/staging/comedi/drivers/vmk80xx.c
@@ -18,21 +18,22 @@
     GNU General Public License for more details.
 */
 /*
-Driver: vmk80xx
-Description: Velleman USB Board Low-Level Driver
-Devices: K8055/K8061 aka VM110/VM140
-Author: Manuel Gebele <forensixs@gmx.de>
-Updated: Sun, 10 May 2009 11:14:59 +0200
-Status: works
-
-Supports:
- - analog input
- - analog output
- - digital input
- - digital output
- - counter
- - pwm
-*/
+ * Driver: vmk80xx
+ * Description: Velleman USB Board Low-Level Driver
+ * Devices: [Velleman] K8055 (K8055/VM110), K8061 (K8061/VM140),
+ *   VM110 (K8055/VM110), VM140 (K8061/VM140)
+ * Author: Manuel Gebele <forensixs@gmx.de>
+ * Updated: Sun, 10 May 2009 11:14:59 +0200
+ * Status: works
+ *
+ * Supports:
+ *  - analog input
+ *  - analog output
+ *  - digital input
+ *  - digital output
+ *  - counter
+ *  - pwm
+ */
 
 #include <linux/kernel.h>
 #include <linux/module.h>
diff --git a/drivers/staging/comedi/kcomedilib/kcomedilib_main.c b/drivers/staging/comedi/kcomedilib/kcomedilib_main.c
index 8777f95..973f544 100644
--- a/drivers/staging/comedi/kcomedilib/kcomedilib_main.c
+++ b/drivers/staging/comedi/kcomedilib/kcomedilib_main.c
@@ -95,7 +95,7 @@
 
 	if (s->type == COMEDI_SUBD_UNUSED) {
 		dev_err(dev->class_dev,
-			"%d not useable subdevice\n", insn->subdev);
+			"%d not usable subdevice\n", insn->subdev);
 		ret = -EIO;
 		goto error;
 	}
diff --git a/drivers/staging/cptm1217/clearpad_tm1217.c b/drivers/staging/cptm1217/clearpad_tm1217.c
index 7f265ce..4304604 100644
--- a/drivers/staging/cptm1217/clearpad_tm1217.c
+++ b/drivers/staging/cptm1217/clearpad_tm1217.c
@@ -446,6 +446,12 @@
 
 	/* Mask all the interrupts */
 	retval = cp_tm1217_mask_interrupt(ts);
+	if (retval) {
+		dev_err(ts->dev, "failed to mask interrupts, error: %d\n",
+			retval);
+		kfree(ts);
+		return retval;
+	}
 
 	/* Read the controller information */
 	cp_tm1217_init_data(ts);
diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c
index bdb5317..518ab56 100644
--- a/drivers/staging/dgap/dgap.c
+++ b/drivers/staging/dgap/dgap.c
@@ -1400,27 +1400,27 @@
 		return -ENOMEM;
 
 	if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000,
-					"dgap")) {
-		release_mem_region(brd->membase, 0x200000);
-		return -ENOMEM;
-	}
+					"dgap"))
+		goto err_req_mem;
 
 	brd->re_map_membase = ioremap(brd->membase, 0x200000);
-	if (!brd->re_map_membase) {
-		release_mem_region(brd->membase, 0x200000);
-		release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
-		return -ENOMEM;
-	}
+	if (!brd->re_map_membase)
+		goto err_remap_mem;
 
 	brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
-	if (!brd->re_map_port) {
-		release_mem_region(brd->membase, 0x200000);
-		release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
-		iounmap(brd->re_map_membase);
-		return -ENOMEM;
-	}
+	if (!brd->re_map_port)
+		goto err_remap_port;
 
 	return 0;
+
+err_remap_port:
+	iounmap(brd->re_map_membase);
+err_remap_mem:
+	release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
+err_req_mem:
+	release_mem_region(brd->membase, 0x200000);
+
+	return -ENOMEM;
 }
 
 static void dgap_unmap(struct board_t *brd)
diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index ba98ff3..f610ae1 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -238,6 +238,7 @@
 {
 	int rc = 0;
 	unsigned long flags;
+	struct device *dev;
 
 	/* make sure that the globals are init'd before we do anything else */
 	dgnc_init_globals();
@@ -257,9 +258,20 @@
 	dgnc_Major = rc;
 
 	dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt");
-	device_create(dgnc_class, NULL,
-		MKDEV(dgnc_Major, 0),
-		NULL, "dgnc_mgmt");
+	if (IS_ERR(dgnc_class)) {
+		rc = PTR_ERR(dgnc_class);
+		pr_err(DRVSTR ": Can't create dgnc_mgmt class (%d)\n", rc);
+		goto failed_class;
+	}
+
+	dev = device_create(dgnc_class, NULL,
+			MKDEV(dgnc_Major, 0),
+			NULL, "dgnc_mgmt");
+	if (IS_ERR(dev)) {
+		rc = PTR_ERR(dev);
+		pr_err(DRVSTR ": Can't create device (%d)\n", rc);
+		goto failed_device;
+	}
 
 	/*
 	 * Init any global tty stuff.
@@ -268,7 +280,7 @@
 
 	if (rc < 0) {
 		pr_err(DRVSTR ": tty preinit - not enough memory (%d)\n", rc);
-		return rc;
+		goto failed_tty;
 	}
 
 	/* Start the poller */
@@ -282,6 +294,14 @@
 
 	add_timer(&dgnc_poll_timer);
 
+	return 0;
+
+failed_tty:
+	device_destroy(dgnc_class, MKDEV(dgnc_Major, 0));
+failed_device:
+	class_destroy(dgnc_class);
+failed_class:
+	unregister_chrdev(dgnc_Major, "dgnc");
 	return rc;
 }
 
diff --git a/drivers/staging/fbtft/Kconfig b/drivers/staging/fbtft/Kconfig
new file mode 100644
index 0000000..995a910
--- /dev/null
+++ b/drivers/staging/fbtft/Kconfig
@@ -0,0 +1,169 @@
+menuconfig FB_TFT
+	tristate "Support for small TFT LCD display modules"
+	depends on FB && SPI && GPIOLIB
+	select FB_SYS_FILLRECT
+	select FB_SYS_COPYAREA
+	select FB_SYS_IMAGEBLIT
+	select FB_SYS_FOPS
+	select FB_DEFERRED_IO
+	select FB_BACKLIGHT
+
+config FB_TFT_AGM1264K_FL
+	tristate "FB driver for the AGM1264K-FL LCD display"
+	depends on FB_TFT
+	help
+	  Framebuffer support for the AGM1264K-FL LCD display (two Samsung KS0108 compatable chips)
+
+config FB_TFT_BD663474
+	tristate "FB driver for the BD663474 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for BD663474
+
+config FB_TFT_HX8340BN
+	tristate "FB driver for the HX8340BN LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for HX8340BN
+
+config FB_TFT_HX8347D
+	tristate "FB driver for the HX8347D LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for HX8347D
+
+config FB_TFT_HX8353D
+	tristate "FB driver for the HX8353D LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for HX8353D
+
+config FB_TFT_ILI9320
+	tristate "FB driver for the ILI9320 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9320
+
+config FB_TFT_ILI9325
+	tristate "FB driver for the ILI9325 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9325
+
+config FB_TFT_ILI9340
+	tristate "FB driver for the ILI9340 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9340
+
+config FB_TFT_ILI9341
+	tristate "FB driver for the ILI9341 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9341
+
+config FB_TFT_ILI9481
+	tristate "FB driver for the ILI9481 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9481
+
+config FB_TFT_ILI9486
+	tristate "FB driver for the ILI9486 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ILI9486
+
+config FB_TFT_PCD8544
+	tristate "FB driver for the PCD8544 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for PCD8544
+
+config FB_TFT_RA8875
+        tristate "FB driver for the RA8875 LCD Controller"
+        depends on FB_TFT
+	help
+	  Generic Framebuffer support for RA8875
+
+config FB_TFT_S6D02A1
+	tristate "FB driver for the S6D02A1 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for S6D02A1
+
+config FB_TFT_S6D1121
+	tristate "FB driver for the S6D1211 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for S6D1121
+
+config FB_TFT_SSD1289
+	tristate "FB driver for the SSD1289 LCD Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1289
+
+config FB_TFT_SSD1306
+	tristate "FB driver for the SSD1306 OLED Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1306
+
+config FB_TFT_SSD1331
+	tristate "FB driver for the SSD1331 LCD Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1331
+
+config FB_TFT_SSD1351
+	tristate "FB driver for the SSD1351 LCD Controller"
+	depends on FB_TFT
+	help
+	  Framebuffer support for SSD1351
+
+config FB_TFT_ST7735R
+	tristate "FB driver for the ST7735R LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for ST7735R
+
+config FB_TFT_TINYLCD
+	tristate "FB driver for tinylcd.com display"
+	depends on FB_TFT
+	help
+	  Custom Framebuffer support for tinylcd.com display
+
+config FB_TFT_TLS8204
+	tristate "FB driver for the TLS8204 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for TLS8204
+
+config FB_TFT_UC1701
+	tristate "FB driver for the UC1701 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for UC1701
+
+config FB_TFT_UPD161704
+	tristate "FB driver for the uPD161704 LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for uPD161704
+
+config FB_TFT_WATTEROTT
+	tristate "FB driver for the WATTEROTT LCD Controller"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for WATTEROTT
+
+config FB_FLEX
+	tristate "Generic FB driver for TFT LCD displays"
+	depends on FB_TFT
+	help
+	  Generic Framebuffer support for TFT LCD displays.
+
+config FB_TFT_FBTFT_DEVICE
+	tristate "Module to for adding FBTFT devices"
+	depends on FB_TFT
diff --git a/drivers/staging/fbtft/Makefile b/drivers/staging/fbtft/Makefile
new file mode 100644
index 0000000..e773f0f
--- /dev/null
+++ b/drivers/staging/fbtft/Makefile
@@ -0,0 +1,34 @@
+# Core module
+obj-$(CONFIG_FB_TFT)             += fbtft.o
+fbtft-y                          += fbtft-core.o fbtft-sysfs.o fbtft-bus.o fbtft-io.o
+
+# drivers
+obj-$(CONFIG_FB_TFT_AGM1264K_FL) += fb_agm1264k-fl.o
+obj-$(CONFIG_FB_TFT_BD663474)    += fb_bd663474.o
+obj-$(CONFIG_FB_TFT_HX8340BN)    += fb_hx8340bn.o
+obj-$(CONFIG_FB_TFT_HX8347D)     += fb_hx8347d.o
+obj-$(CONFIG_FB_TFT_HX8353D)     += fb_hx8353d.o
+obj-$(CONFIG_FB_TFT_ILI9320)     += fb_ili9320.o
+obj-$(CONFIG_FB_TFT_ILI9325)     += fb_ili9325.o
+obj-$(CONFIG_FB_TFT_ILI9340)     += fb_ili9340.o
+obj-$(CONFIG_FB_TFT_ILI9341)     += fb_ili9341.o
+obj-$(CONFIG_FB_TFT_ILI9481)     += fb_ili9481.o
+obj-$(CONFIG_FB_TFT_ILI9486)     += fb_ili9486.o
+obj-$(CONFIG_FB_TFT_PCD8544)     += fb_pcd8544.o
+obj-$(CONFIG_FB_TFT_RA8875)      += fb_ra8875.o
+obj-$(CONFIG_FB_TFT_S6D02A1)     += fb_s6d02a1.o
+obj-$(CONFIG_FB_TFT_S6D1121)     += fb_s6d1121.o
+obj-$(CONFIG_FB_TFT_SSD1289)     += fb_ssd1289.o
+obj-$(CONFIG_FB_TFT_SSD1306)     += fb_ssd1306.o
+obj-$(CONFIG_FB_TFT_SSD1331)     += fb_ssd1331.o
+obj-$(CONFIG_FB_TFT_SSD1351)     += fb_ssd1351.o
+obj-$(CONFIG_FB_TFT_ST7735R)     += fb_st7735r.o
+obj-$(CONFIG_FB_TFT_TINYLCD)     += fb_tinylcd.o
+obj-$(CONFIG_FB_TFT_TLS8204)     += fb_tls8204.o
+obj-$(CONFIG_FB_TFT_UC1701)      += fb_uc1701.o
+obj-$(CONFIG_FB_TFT_UPD161704)   += fb_upd161704.o
+obj-$(CONFIG_FB_TFT_WATTEROTT)   += fb_watterott.o
+obj-$(CONFIG_FB_FLEX)            += flexfb.o
+
+# Device modules
+obj-$(CONFIG_FB_TFT_FBTFT_DEVICE) += fbtft_device.o
diff --git a/drivers/staging/fbtft/README b/drivers/staging/fbtft/README
new file mode 100644
index 0000000..bc89b58
--- /dev/null
+++ b/drivers/staging/fbtft/README
@@ -0,0 +1,32 @@
+  FBTFT
+=========
+
+Linux Framebuffer drivers for small TFT LCD display modules.
+The module 'fbtft' makes writing drivers for some of these displays very easy.
+
+Development is done on a Raspberry Pi running the Raspbian "wheezy" distribution.
+
+INSTALLATION
+  Download kernel sources
+
+  From Linux 3.15  
+    cd drivers/video/fbdev/fbtft
+    git clone https://github.com/notro/fbtft.git
+    
+    Add to drivers/video/fbdev/Kconfig:   source "drivers/video/fbdev/fbtft/Kconfig"
+    Add to drivers/video/fbdev/Makefile:  obj-y += fbtft/
+  
+  Before Linux 3.15  
+    cd drivers/video
+    git clone https://github.com/notro/fbtft.git
+    
+    Add to drivers/video/Kconfig:   source "drivers/video/fbtft/Kconfig"
+    Add to drivers/video/Makefile:  obj-y += fbtft/
+  
+  Enable driver(s) in menuconfig and build the kernel
+
+
+See wiki for more information: https://github.com/notro/fbtft/wiki
+
+
+Source: https://github.com/notro/fbtft/
diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c
new file mode 100644
index 0000000..7fe4fa0
--- /dev/null
+++ b/drivers/staging/fbtft/fb_agm1264k-fl.c
@@ -0,0 +1,462 @@
+/*
+ * FB driver for Two KS0108 LCD controllers in AGM1264K-FL display
+ *
+ * Copyright (C) 2014 ololoshka2871
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+
+#include "fbtft.h"
+
+/* Uncomment text line to use negative image on display */
+/*#define NEGATIVE*/
+
+#define WHITE		0xff
+#define BLACK		0
+
+#define DRVNAME		"fb_agm1264k-fl"
+#define WIDTH		64
+#define HEIGHT		64
+#define TOTALWIDTH	(WIDTH * 2)	 /* because 2 x ks0108 in one display */
+#define FPS			20
+
+#define EPIN		gpio.wr
+#define RS			gpio.dc
+#define RW			gpio.aux[2]
+#define CS0			gpio.aux[0]
+#define CS1			gpio.aux[1]
+
+
+/* diffusing error (“Floyd-Steinberg”) */
+#define DIFFUSING_MATRIX_WIDTH	2
+#define DIFFUSING_MATRIX_HEIGHT	2
+
+static const signed char
+diffusing_matrix[DIFFUSING_MATRIX_WIDTH][DIFFUSING_MATRIX_HEIGHT] = {
+	{-1, 3},
+	{3, 2},
+};
+
+static const unsigned char gamma_correction_table[] = {
+0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,
+1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6,
+6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 11, 11, 11, 12, 12, 13,
+13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21,
+22, 22, 23, 23, 24, 25, 25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 32,
+33, 33, 34, 35, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45,
+46, 47, 48, 49, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
+62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 81,
+82, 83, 84, 85, 87, 88, 89, 90, 91, 93, 94, 95, 97, 98, 99, 100, 102,
+103, 105, 106, 107, 109, 110, 111, 113, 114, 116, 117, 119, 120, 121,
+123, 124, 126, 127, 129, 130, 132, 133, 135, 137, 138, 140, 141, 143,
+145, 146, 148, 149, 151, 153, 154, 156, 158, 159, 161, 163, 165, 166,
+168, 170, 172, 173, 175, 177, 179, 181, 182, 184, 186, 188, 190, 192,
+194, 196, 197, 199, 201, 203, 205, 207, 209, 211, 213, 215, 217, 219,
+221, 223, 225, 227, 229, 231, 234, 236, 238, 240, 242, 244, 246, 248,
+251, 253, 255
+};
+
+static int init_display(struct fbtft_par *par)
+{
+	u8 i;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	for (i = 0; i < 2; ++i) {
+		write_reg(par, i, 0x3f); /* display on */
+		write_reg(par, i, 0x40); /* set x to 0 */
+		write_reg(par, i, 0xb0); /* set page to 0 */
+		write_reg(par, i, 0xc0); /* set start line to 0 */
+	}
+
+	return 0;
+}
+
+void reset(struct fbtft_par *par)
+{
+	if (par->gpio.reset == -1)
+		return;
+
+	fbtft_dev_dbg(DEBUG_RESET, par, par->info->device, "%s()\n", __func__);
+
+	gpio_set_value(par->gpio.reset, 0);
+	udelay(20);
+	gpio_set_value(par->gpio.reset, 1);
+	mdelay(120);
+}
+
+/* Check if all necessary GPIOS defined */
+static int verify_gpios(struct fbtft_par *par)
+{
+	int i;
+
+	fbtft_dev_dbg(DEBUG_VERIFY_GPIOS, par, par->info->device,
+		"%s()\n", __func__);
+
+	if (par->EPIN < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'wr' (aka E) gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	for (i = 0; i < 8; ++i) {
+		if (par->gpio.db[i] < 0) {
+			dev_err(par->info->device,
+				"Missing info about 'db[%i]' gpio. Aborting.\n",
+				i);
+			return -EINVAL;
+		}
+	}
+	if (par->CS0 < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'cs0' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (par->CS1 < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'cs1' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (par->RW < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'rw' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static unsigned long
+request_gpios_match(struct fbtft_par *par, const struct fbtft_gpio *gpio)
+{
+	fbtft_dev_dbg(DEBUG_REQUEST_GPIOS_MATCH, par, par->info->device,
+		"%s('%s')\n", __func__, gpio->name);
+
+	if (strcasecmp(gpio->name, "wr") == 0) {
+		/* left ks0108 E pin */
+		par->EPIN = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (strcasecmp(gpio->name, "cs0") == 0) {
+		/* left ks0108 controller pin */
+		par->CS0 = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "cs1") == 0) {
+		/* right ks0108 controller pin */
+		par->CS1 = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	}
+
+	/* if write (rw = 0) e(1->0) perform write */
+	/* if read (rw = 1) e(0->1) set data on D0-7*/
+	else if (strcasecmp(gpio->name, "rw") == 0) {
+		par->RW = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	}
+
+	return FBTFT_GPIO_NO_MATCH;
+}
+
+/* This function oses to enter commands
+ * first byte - destination controller 0 or 1
+ * folowing - commands
+ */
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = (u8 *)par->buf;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++)
+			buf[i] = (u8)va_arg(args, unsigned int);
+
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
+			par->info->device, u8, buf, len, "%s: ", __func__);
+	}
+
+	va_start(args, len);
+
+	*buf = (u8)va_arg(args, unsigned int);
+
+	if (*buf > 1) {
+		va_end(args);
+		dev_err(par->info->device, "%s: Incorrect chip sellect request (%d)\n",
+			__func__, *buf);
+		return;
+	}
+
+	/* select chip */
+	if (*buf) {
+		/* cs1 */
+		gpio_set_value(par->CS0, 1);
+		gpio_set_value(par->CS1, 0);
+	} else {
+		/* cs0 */
+		gpio_set_value(par->CS0, 0);
+		gpio_set_value(par->CS1, 1);
+	}
+
+	gpio_set_value(par->RS, 0); /* RS->0 (command mode) */
+	len--;
+
+	if (len) {
+		i = len;
+		while (i--)
+			*buf++ = (u8)va_arg(args, unsigned int);
+		ret = par->fbtftops.write(par, par->buf, len * (sizeof(u8)));
+		if (ret < 0) {
+			va_end(args);
+			dev_err(par->info->device, "%s: write() failed and returned %d\n",
+				__func__, ret);
+			return;
+		}
+	}
+
+	va_end(args);
+}
+
+static struct
+{
+	int xs, ys_page, xe, ye_page;
+} addr_win;
+
+/* save display writing zone */
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	addr_win.xs = xs;
+	addr_win.ys_page = ys / 8;
+	addr_win.xe = xe;
+	addr_win.ye_page = ye / 8;
+
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys_page=%d, xe=%d, ye_page=%d)\n", __func__,
+		addr_win.xs, addr_win.ys_page, addr_win.xe, addr_win.ye_page);
+}
+
+static void
+construct_line_bitmap(struct fbtft_par *par, u8 *dest, signed short *src,
+						int xs, int xe, int y)
+{
+	int x, i;
+
+	for (x = xs; x < xe; ++x) {
+		u8 res = 0;
+
+		for (i = 0; i < 8; i++)
+			if (src[(y * 8 + i) * par->info->var.xres + x])
+				res |= 1 << i;
+#ifdef NEGATIVE
+		*dest++ = res;
+#else
+		*dest++ = ~res;
+#endif
+	}
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y;
+	int ret = 0;
+
+	/* buffer to convert RGB565 -> grayscale16 -> Ditherd image 1bpp */
+	signed short *convert_buf = kmalloc(par->info->var.xres *
+		par->info->var.yres * sizeof(signed short), GFP_NOIO);
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	/* converting to grayscale16 */
+	for (x = 0; x < par->info->var.xres; ++x)
+		for (y = 0; y < par->info->var.yres; ++y) {
+			u16 pixel = vmem16[y *  par->info->var.xres + x];
+			u16 b = pixel & 0x1f;
+			u16 g = (pixel & (0x3f << 5)) >> 5;
+			u16 r = (pixel & (0x1f << (5 + 6))) >> (5 + 6);
+
+			pixel = (299 * r + 587 * g + 114 * b) / 200;
+			if (pixel > 255)
+				pixel = 255;
+
+			/* gamma-correction by table */
+			convert_buf[y *  par->info->var.xres + x] =
+				(signed short)gamma_correction_table[pixel];
+		}
+
+	/* Image Dithering */
+	for (x = 0; x < par->info->var.xres; ++x)
+		for (y = 0; y < par->info->var.yres; ++y) {
+			signed short pixel =
+				convert_buf[y *  par->info->var.xres + x];
+			signed short error_b = pixel - BLACK;
+			signed short error_w = pixel - WHITE;
+			signed short error;
+			u16 i, j;
+
+			/* what color close? */
+			if (abs(error_b) >= abs(error_w)) {
+				/* white */
+				error = error_w;
+				pixel = 0xff;
+			} else {
+				/* black */
+				error = error_b;
+				pixel = 0;
+			}
+
+			error /= 8;
+
+			/* diffusion matrix row */
+			for (i = 0; i < DIFFUSING_MATRIX_WIDTH; ++i)
+				/* diffusion matrix column */
+				for (j = 0; j < DIFFUSING_MATRIX_HEIGHT; ++j) {
+					signed short *write_pos;
+					signed char coeff;
+
+					/* skip pixels out of zone */
+					if (x + i < 0 ||
+						x + i >= par->info->var.xres
+						|| y + j >= par->info->var.yres)
+						continue;
+					write_pos = &convert_buf[
+						(y + j) * par->info->var.xres +
+						x + i];
+					coeff = diffusing_matrix[i][j];
+					if (coeff == -1)
+						/* pixel itself */
+						*write_pos = pixel;
+					else {
+						signed short p = *write_pos +
+							error * coeff;
+
+						if (p > WHITE)
+							p = WHITE;
+						if (p < BLACK)
+							p = BLACK;
+						*write_pos = p;
+					}
+				}
+		}
+
+	 /* 1 string = 2 pages */
+	 for (y = addr_win.ys_page; y <= addr_win.ye_page; ++y) {
+		/* left half of display */
+		if (addr_win.xs < par->info->var.xres / 2) {
+			construct_line_bitmap(par, buf, convert_buf,
+				addr_win.xs, par->info->var.xres / 2, y);
+
+			len = par->info->var.xres / 2 - addr_win.xs;
+
+			/* select left side (sc0)
+			 * set addr
+			 */
+			write_reg(par, 0x00, (1 << 6) | (u8)addr_win.xs);
+			write_reg(par, 0x00, (0x17 << 3) | (u8)y);
+
+			/* write bitmap */
+			gpio_set_value(par->RS, 1); /* RS->1 (data mode) */
+			ret = par->fbtftops.write(par, buf, len);
+			if (ret < 0)
+				dev_err(par->info->device,
+					"%s: write failed and returned: %d\n",
+					__func__, ret);
+		}
+		/* right half of display */
+		if (addr_win.xe >= par->info->var.xres / 2) {
+			construct_line_bitmap(par, buf,
+				convert_buf, par->info->var.xres / 2,
+				addr_win.xe + 1, y);
+
+			len = addr_win.xe + 1 - par->info->var.xres / 2;
+
+			/* select right side (sc1)
+			 * set addr
+			 */
+			write_reg(par, 0x01, (1 << 6));
+			write_reg(par, 0x01, (0x17 << 3) | (u8)y);
+
+			/* write bitmap */
+			gpio_set_value(par->RS, 1); /* RS->1 (data mode) */
+			par->fbtftops.write(par, buf, len);
+			if (ret < 0)
+				dev_err(par->info->device,
+					"%s: write failed and returned: %d\n",
+					__func__, ret);
+		}
+	}
+	kfree(convert_buf);
+
+	gpio_set_value(par->CS0, 1);
+	gpio_set_value(par->CS1, 1);
+
+	return ret;
+}
+
+static int write(struct fbtft_par *par, void *buf, size_t len)
+{
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	gpio_set_value(par->RW, 0); /* set write mode */
+
+
+	while (len--) {
+		u8 i, data;
+
+		data = *(u8 *) buf++;
+
+		/* set data bus */
+		for (i = 0; i < 8; ++i)
+			gpio_set_value(par->gpio.db[i], data & (1 << i));
+		/* set E */
+		gpio_set_value(par->EPIN, 1);
+		udelay(5);
+		/* unset E - write */
+		gpio_set_value(par->EPIN, 0);
+		udelay(1);
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = TOTALWIDTH,
+	.height = HEIGHT,
+	.fps = FPS,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.verify_gpios = verify_gpios,
+		.request_gpios_match = request_gpios_match,
+		.reset = reset,
+		.write = write,
+		.write_register = write_reg8_bus8,
+		.write_vmem = write_vmem,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "displaytronic,fb_agm1264k-fl", &display);
+
+MODULE_ALIAS("platform:" DRVNAME);
+
+MODULE_DESCRIPTION("Two KS0108 LCD controllers in AGM1264K-FL display");
+MODULE_AUTHOR("ololoshka2871");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_bd663474.c b/drivers/staging/fbtft/fb_bd663474.c
new file mode 100644
index 0000000..7e00c60
--- /dev/null
+++ b/drivers/staging/fbtft/fb_bd663474.c
@@ -0,0 +1,193 @@
+/*
+ * FB driver for the uPD161704 LCD Controller
+ *
+ * Copyright (C) 2014 Seong-Woo Kim
+ *
+ * Based on fb_ili9325.c by Noralf Tronnes
+ * Based on ili9325.c by Jeroen Domburg
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_bd663474"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	par->fbtftops.reset(par);
+
+	/* Initialization sequence from Lib_UTFT */
+
+	/* oscillator start */
+	write_reg(par, 0x000,0x0001);	/*oscillator 0: stop, 1: operation */
+	mdelay(10);
+
+	/* Power settings */
+	write_reg(par, 0x100, 0x0000 ); /* power supply setup */
+	write_reg(par, 0x101, 0x0000 );
+	write_reg(par, 0x102, 0x3110 );
+	write_reg(par, 0x103, 0xe200 );
+	write_reg(par, 0x110, 0x009d );
+	write_reg(par, 0x111, 0x0022 );
+	write_reg(par, 0x100, 0x0120 );
+	mdelay( 20 );
+
+	write_reg(par, 0x100, 0x3120 );
+	mdelay( 80 );
+	/* Display control */
+	write_reg(par, 0x001, 0x0100 );
+	write_reg(par, 0x002, 0x0000 );
+	write_reg(par, 0x003, 0x1230 );
+	write_reg(par, 0x006, 0x0000 );
+	write_reg(par, 0x007, 0x0101 );
+	write_reg(par, 0x008, 0x0808 );
+	write_reg(par, 0x009, 0x0000 );
+	write_reg(par, 0x00b, 0x0000 );
+	write_reg(par, 0x00c, 0x0000 );
+	write_reg(par, 0x00d, 0x0018 );
+	/* LTPS control settings */
+	write_reg(par, 0x012, 0x0000 );
+	write_reg(par, 0x013, 0x0000 );
+	write_reg(par, 0x018, 0x0000 );
+	write_reg(par, 0x019, 0x0000 );
+
+	write_reg(par, 0x203, 0x0000 );
+	write_reg(par, 0x204, 0x0000 );
+
+	write_reg(par, 0x210, 0x0000 );
+	write_reg(par, 0x211, 0x00ef );
+	write_reg(par, 0x212, 0x0000 );
+	write_reg(par, 0x213, 0x013f );
+	write_reg(par, 0x214, 0x0000 );
+	write_reg(par, 0x215, 0x0000 );
+	write_reg(par, 0x216, 0x0000 );
+	write_reg(par, 0x217, 0x0000 );
+
+	/* Gray scale settings */
+	write_reg(par, 0x300, 0x5343);
+	write_reg(par, 0x301, 0x1021);
+	write_reg(par, 0x302, 0x0003);
+	write_reg(par, 0x303, 0x0011);
+	write_reg(par, 0x304, 0x050a);
+	write_reg(par, 0x305, 0x4342);
+	write_reg(par, 0x306, 0x1100);
+	write_reg(par, 0x307, 0x0003);
+	write_reg(par, 0x308, 0x1201);
+	write_reg(par, 0x309, 0x050a);
+
+	/* RAM access settings */
+	write_reg(par, 0x400, 0x4027 );
+	write_reg(par, 0x401, 0x0000 );
+	write_reg(par, 0x402, 0x0000 );  /* First screen drive position (1) */
+	write_reg(par, 0x403, 0x013f );  /* First screen drive position (2) */
+	write_reg(par, 0x404, 0x0000 );
+
+	write_reg(par, 0x200, 0x0000 );
+	write_reg(par, 0x201, 0x0000 );
+	write_reg(par, 0x100, 0x7120 );
+	write_reg(par, 0x007, 0x0103 );
+	mdelay( 10 );
+	write_reg(par, 0x007, 0x0113 );
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R200h = Horizontal GRAM Start Address */
+	/* R201h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0200, xs);
+		write_reg(par, 0x0201, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0200, WIDTH - 1 - xs);
+		write_reg(par, 0x0201, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0200, WIDTH - 1 - ys);
+		write_reg(par, 0x0201, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0200, ys);
+		write_reg(par, 0x0201, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x202); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x003, 0x1230);
+		break;
+	case 180:
+		write_reg(par, 0x003, 0x1200);
+		break;
+	case 270:
+		write_reg(par, 0x003, 0x1228);
+		break;
+	case 90:
+		write_reg(par, 0x003, 0x1218);
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.bpp = BPP,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "hitachi,bd663474", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:bd663474");
+MODULE_ALIAS("platform:bd663474");
+
+MODULE_DESCRIPTION("FB driver for the uPD161704 LCD Controller");
+MODULE_AUTHOR("Seong-Woo Kim");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_hx8340bn.c b/drivers/staging/fbtft/fb_hx8340bn.c
new file mode 100644
index 0000000..3939502
--- /dev/null
+++ b/drivers/staging/fbtft/fb_hx8340bn.c
@@ -0,0 +1,229 @@
+/*
+ * FB driver for the HX8340BN LCD Controller
+ *
+ * This display uses 9-bit SPI: Data/Command bit + 8 data bits
+ * For platforms that doesn't support 9-bit, the driver is capable
+ * of emulating this using 8-bit transfer.
+ * This is done by transfering eight 9-bit words in 9 bytes.
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_hx8340bn"
+#define WIDTH		176
+#define HEIGHT		220
+#define TXBUFLEN	(4 * PAGE_SIZE)
+#define DEFAULT_GAMMA	"1 3 0E 5 0 2 09 0 6 1 7 1 0 2 2\n" \
+			"3 3 17 8 4 7 05 7 6 0 3 1 6 0 0 "
+
+
+static bool emulate;
+module_param(emulate, bool, 0);
+MODULE_PARM_DESC(emulate, "Force emulation in 9-bit mode");
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* BTL221722-276L startup sequence, from datasheet */
+
+	/* SETEXTCOM: Set extended command set (C1h)
+	   This command is used to set extended command set access enable.
+	   Enable: After command (C1h), must write: ffh,83h,40h */
+	write_reg(par, 0xC1, 0xFF, 0x83, 0x40);
+
+	/* Sleep out
+	   This command turns off sleep mode.
+	   In this mode the DC/DC converter is enabled, Internal oscillator
+	   is started, and panel scanning is started. */
+	write_reg(par, 0x11);
+	mdelay(150);
+
+	/* Undoc'd register? */
+	write_reg(par, 0xCA, 0x70, 0x00, 0xD9);
+
+	/* SETOSC: Set Internal Oscillator (B0h)
+	   This command is used to set internal oscillator related settings */
+	/*	OSC_EN: Enable internal oscillator */
+	/*	Internal oscillator frequency: 125% x 2.52MHz */
+	write_reg(par, 0xB0, 0x01, 0x11);
+
+	/* Drive ability setting */
+	write_reg(par, 0xC9, 0x90, 0x49, 0x10, 0x28, 0x28, 0x10, 0x00, 0x06);
+	mdelay(20);
+
+	/* SETPWCTR5: Set Power Control 5(B5h)
+	   This command is used to set VCOM Low and VCOM High Voltage */
+	/* VCOMH 0110101 :  3.925 */
+	/* VCOML 0100000 : -1.700 */
+	/* 45h=69  VCOMH: "VMH" + 5d   VCOML: "VMH" + 5d */
+	write_reg(par, 0xB5, 0x35, 0x20, 0x45);
+
+	/* SETPWCTR4: Set Power Control 4(B4h)
+		VRH[4:0]:	Specify the VREG1 voltage adjusting.
+				VREG1 voltage is for gamma voltage setting.
+		BT[2:0]:	Switch the output factor of step-up circuit 2
+				for VGH and VGL voltage generation. */
+	write_reg(par, 0xB4, 0x33, 0x25, 0x4C);
+	mdelay(10);
+
+	/* Interface Pixel Format (3Ah)
+	   This command is used to define the format of RGB picture data,
+	   which is to be transfer via the system and RGB interface. */
+	/* RGB interface: 16 Bit/Pixel	*/
+	write_reg(par, 0x3A, 0x05);
+
+	/* Display on (29h)
+	   This command is used to recover from DISPLAY OFF mode.
+	   Output from the Frame Memory is enabled. */
+	write_reg(par, 0x29);
+	mdelay(10);
+
+	return 0;
+}
+
+void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, FBTFT_CASET, 0x00, xs, 0x00, xe);
+	write_reg(par, FBTFT_RASET, 0x00, ys, 0x00, ye);
+	write_reg(par, FBTFT_RAMWR);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* MADCTL - Memory data access control */
+	/* RGB/BGR can be set with H/W pin SRGB and MADCTL BGR bit */
+#define MY (1 << 7)
+#define MX (1 << 6)
+#define MV (1 << 5)
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, MX | MV | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, MX | MY | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, MY | MV | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma Curve selection, GC (only GC0 can be customized):
+    0 = 2.2, 1 = 1.8, 2 = 2.5, 3 = 1.0
+  Gamma string format:
+    OP0 OP1 CP0 CP1 CP2 CP3 CP4 MP0 MP1 MP2 MP3 MP4 MP5 CGM0 CGM1
+    ON0 ON1 CN0 CN1 CN2 CN3 CN4 MN0 MN1 MN2 MN3 MN4 MN5 XXXX  GC
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b1111, 0b1111, 0b11111, 0b1111, 0b1111, 0b1111, 0b11111,
+		0b111, 0b111, 0b111, 0b111, 0b111, 0b111, 0b11, 0b11,
+		0b1111, 0b1111, 0b11111, 0b1111, 0b1111, 0b1111, 0b11111,
+		0b111, 0b111, 0b111, 0b111, 0b111, 0b111, 0b0, 0b0 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < par->gamma.num_curves; i++)
+		for (j = 0; j < par->gamma.num_values; j++)
+			CURVE(i, j) &= mask[i * par->gamma.num_values + j];
+
+	write_reg(par, 0x26, 1 << CURVE(1, 14)); /* Gamma Set (26h) */
+
+	if (CURVE(1, 14))
+		return 0; /* only GC0 can be customized */
+
+	write_reg(par, 0xC2,
+		(CURVE(0, 8) << 4) | CURVE(0, 7),
+		(CURVE(0, 10) << 4) | CURVE(0, 9),
+		(CURVE(0, 12) << 4) | CURVE(0, 11),
+		CURVE(0, 2),
+		(CURVE(0, 4) << 4) | CURVE(0, 3),
+		CURVE(0, 5),
+		CURVE(0, 6),
+		(CURVE(0, 1) << 4) | CURVE(0, 0),
+		(CURVE(0, 14) << 2) | CURVE(0, 13));
+
+	write_reg(par, 0xC3,
+		(CURVE(1, 8) << 4) | CURVE(1, 7),
+		(CURVE(1, 10) << 4) | CURVE(1, 9),
+		(CURVE(1, 12) << 4) | CURVE(1, 11),
+		CURVE(1, 2),
+		(CURVE(1, 4) << 4) | CURVE(1, 3),
+		CURVE(1, 5),
+		CURVE(1, 6),
+		(CURVE(1, 1) << 4) | CURVE(1, 0));
+
+	mdelay(10);
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 2,
+	.gamma_len = 15,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8340bn", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:hx8340bn");
+MODULE_ALIAS("platform:hx8340bn");
+
+MODULE_DESCRIPTION("FB driver for the HX8340BN LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_hx8347d.c b/drivers/staging/fbtft/fb_hx8347d.c
new file mode 100644
index 0000000..8139a8f
--- /dev/null
+++ b/drivers/staging/fbtft/fb_hx8347d.c
@@ -0,0 +1,181 @@
+/*
+ * FB driver for the HX8347D LCD Controller
+ *
+ * Copyright (C) 2013 Christian Vogelgsang
+ *
+ * Based on driver code found here: https://github.com/watterott/r61505u-Adapter
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_hx8347d"
+#define WIDTH		320
+#define HEIGHT		240
+#define DEFAULT_GAMMA	"0 0 0 0 0 0 0 0 0 0 0 0 0 0\n" \
+			"0 0 0 0 0 0 0 0 0 0 0 0 0 0"
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* driving ability */
+	write_reg(par, 0xEA, 0x00);
+	write_reg(par, 0xEB, 0x20);
+	write_reg(par, 0xEC, 0x0C);
+	write_reg(par, 0xED, 0xC4);
+	write_reg(par, 0xE8, 0x40);
+	write_reg(par, 0xE9, 0x38);
+	write_reg(par, 0xF1, 0x01);
+	write_reg(par, 0xF2, 0x10);
+	write_reg(par, 0x27, 0xA3);
+
+	/* power voltage */
+	write_reg(par, 0x1B, 0x1B);
+	write_reg(par, 0x1A, 0x01);
+	write_reg(par, 0x24, 0x2F);
+	write_reg(par, 0x25, 0x57);
+
+	/* VCOM offset */
+	write_reg(par, 0x23, 0x8D); /* for flicker adjust */
+
+	/* power on */
+	write_reg(par, 0x18, 0x36);
+	write_reg(par, 0x19, 0x01); /* start osc */
+	write_reg(par, 0x01, 0x00); /* wakeup */
+	write_reg(par, 0x1F, 0x88);
+	mdelay(5);
+	write_reg(par, 0x1F, 0x80);
+	mdelay(5);
+	write_reg(par, 0x1F, 0x90);
+	mdelay(5);
+	write_reg(par, 0x1F, 0xD0);
+	mdelay(5);
+
+	/* color selection */
+	write_reg(par, 0x17, 0x05); /* 65k */
+
+	/*panel characteristic */
+	write_reg(par, 0x36, 0x00);
+
+	/*display on */
+	write_reg(par, 0x28, 0x38);
+	mdelay(40);
+	write_reg(par, 0x28, 0x3C);
+
+	/* orientation */
+	write_reg(par, 0x16, 0x60 | (par->bgr << 3));
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x02, (xs >> 8) & 0xFF);
+	write_reg(par, 0x03, xs & 0xFF);
+	write_reg(par, 0x04, (xe >> 8) & 0xFF);
+	write_reg(par, 0x05, xe & 0xFF);
+	write_reg(par, 0x06, (ys >> 8) & 0xFF);
+	write_reg(par, 0x07, ys & 0xFF);
+	write_reg(par, 0x08, (ye >> 8) & 0xFF);
+	write_reg(par, 0x09, ye & 0xFF);
+	write_reg(par, 0x22);
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 VRP2 VRP3 VRP4 VRP5 PRP0 PRP1 PKP0 PKP1 PKP2 PKP3 PKP4 CGM
+    VRN0 VRN1 VRN2 VRN3 VRN4 VRN5 PRN0 PRN1 PKN0 PKN1 PKN2 PKN3 PKN4 CGM
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b1111111, 0b1111111,
+		0b11111, 0b11111, 0b11111, 0b11111, 0b11111,
+		0b1111};
+	int i, j;
+	int acc = 0;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < par->gamma.num_curves; i++)
+		for (j = 0; j < par->gamma.num_values; j++) {
+			acc += CURVE(i, j);
+			CURVE(i, j) &= mask[j];
+		}
+
+	if (acc == 0) /* skip if all values are zero */
+		return 0;
+
+	for (i = 0; i < par->gamma.num_curves; i++) {
+		write_reg(par, 0x40 + (i * 0x10), CURVE(i, 0));
+		write_reg(par, 0x41 + (i * 0x10), CURVE(i, 1));
+		write_reg(par, 0x42 + (i * 0x10), CURVE(i, 2));
+		write_reg(par, 0x43 + (i * 0x10), CURVE(i, 3));
+		write_reg(par, 0x44 + (i * 0x10), CURVE(i, 4));
+		write_reg(par, 0x45 + (i * 0x10), CURVE(i, 5));
+		write_reg(par, 0x46 + (i * 0x10), CURVE(i, 6));
+		write_reg(par, 0x47 + (i * 0x10), CURVE(i, 7));
+		write_reg(par, 0x48 + (i * 0x10), CURVE(i, 8));
+		write_reg(par, 0x49 + (i * 0x10), CURVE(i, 9));
+		write_reg(par, 0x4A + (i * 0x10), CURVE(i, 10));
+		write_reg(par, 0x4B + (i * 0x10), CURVE(i, 11));
+		write_reg(par, 0x4C + (i * 0x10), CURVE(i, 12));
+	}
+	write_reg(par, 0x5D, (CURVE(1, 0) << 4) | CURVE(0, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 2,
+	.gamma_len = 14,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8347d", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:hx8347d");
+MODULE_ALIAS("platform:hx8347d");
+
+MODULE_DESCRIPTION("FB driver for the HX8347D LCD Controller");
+MODULE_AUTHOR("Christian Vogelgsang");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_hx8353d.c b/drivers/staging/fbtft/fb_hx8353d.c
new file mode 100644
index 0000000..c9512dc
--- /dev/null
+++ b/drivers/staging/fbtft/fb_hx8353d.c
@@ -0,0 +1,166 @@
+/*
+ * FB driver for the HX8353D LCD Controller
+ *
+ * Copyright (c) 2014 Petr Olivka
+ * Copyright (c) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_hx8353d"
+#define DEFAULT_GAMMA "50 77 40 08 BF 00 03 0F 00 01 73 00 72 03 B0 0F 08 00 0F"
+
+static int init_display(struct fbtft_par *par)
+{
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+	mdelay(150);
+
+	/* SETEXTC */
+	write_reg(par, 0xB9, 0xFF, 0x83, 0x53);
+
+	/* RADJ */
+	write_reg(par, 0xB0, 0x3C, 0x01);
+
+	/* VCOM */
+	write_reg(par, 0xB6, 0x94, 0x6C, 0x50);
+
+	/* PWR */
+	write_reg(par, 0xB1, 0x00, 0x01, 0x1B, 0x03, 0x01, 0x08, 0x77, 0x89);
+
+	/* COLMOD */
+	write_reg(par, 0x3A, 0x05);
+
+	/* MEM ACCESS */
+	write_reg(par, 0x36, 0xC0);
+
+	/* SLPOUT - Sleep out & booster on */
+	write_reg(par, 0x11);
+	mdelay(150);
+
+	/* DISPON - Display On */
+	write_reg(par, 0x29);
+
+	/* RGBSET */
+	write_reg(par, 0x2D,
+		 0,  2,  4,  6,  8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
+		32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62,
+		 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+		16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+		32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+		48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+		 0,  2,  4,  6,  8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
+		32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62);
+
+	return 0;
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* column address */
+	write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff);
+
+	/* row adress */
+	write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);
+
+	/* memory write */
+	write_reg(par, 0x2c);
+}
+
+#define my (1 << 7)
+#define mx (1 << 6)
+#define mv (1 << 5)
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* madctl - memory data access control
+	     rgb/bgr:
+	     1. mode selection pin srgb
+		rgb h/w pin for color filter setting: 0=rgb, 1=bgr
+	     2. madctl rgb bit
+		rgb-bgr order color filter panel: 0=rgb, 1=bgr */
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, mx | my | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, my | mv | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, mx | mv | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  gamma string format:
+*/
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	write_reg(par, 0xE0,
+		curves[0], curves[1], curves[2], curves[3],
+		curves[4], curves[5], curves[6], curves[7],
+		curves[8], curves[9], curves[10], curves[11],
+		curves[12], curves[13], curves[14], curves[15],
+		curves[16], curves[17], curves[18]);
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = 128,
+	.height = 160,
+	.gamma_num = 1,
+	.gamma_len = 19,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "himax,hx8353d", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:hx8353d");
+MODULE_ALIAS("platform:hx8353d");
+
+MODULE_DESCRIPTION("FB driver for the HX8353D LCD Controller");
+MODULE_AUTHOR("Petr Olivka");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ili9320.c b/drivers/staging/fbtft/fb_ili9320.c
new file mode 100644
index 0000000..b26d893
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9320.c
@@ -0,0 +1,234 @@
+/*
+ * FB driver for the ILI9320 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9320"
+#define WIDTH		240
+#define HEIGHT		320
+#define DEFAULT_GAMMA	"07 07 6 0 0 0 5 5 4 0\n" \
+			"07 08 4 7 5 1 2 0 7 7"
+
+
+static unsigned read_devicecode(struct fbtft_par *par)
+{
+	int ret;
+	u8 rxbuf[8] = {0, };
+
+	write_reg(par, 0x0000);
+	ret = par->fbtftops.read(par, rxbuf, 4);
+	return (rxbuf[2] << 8) | rxbuf[3];
+}
+
+static int init_display(struct fbtft_par *par)
+{
+	unsigned devcode;
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	devcode = read_devicecode(par);
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "Device code: 0x%04X\n",
+		devcode);
+	if ((devcode != 0x0000) && (devcode != 0x9320))
+		dev_warn(par->info->device,
+			"Unrecognized Device code: 0x%04X (expected 0x9320)\n",
+			devcode);
+
+	/* Initialization sequence from ILI9320 Application Notes */
+
+	/* *********** Start Initial Sequence ********* */
+	write_reg(par, 0x00E5, 0x8000); /* Set the Vcore voltage and this setting is must. */
+	write_reg(par, 0x0000, 0x0001); /* Start internal OSC. */
+	write_reg(par, 0x0001, 0x0100); /* set SS and SM bit */
+	write_reg(par, 0x0002, 0x0700); /* set 1 line inversion */
+	write_reg(par, 0x0004, 0x0000); /* Resize register */
+	write_reg(par, 0x0008, 0x0202); /* set the back and front porch */
+	write_reg(par, 0x0009, 0x0000); /* set non-display area refresh cycle */
+	write_reg(par, 0x000A, 0x0000); /* FMARK function */
+	write_reg(par, 0x000C, 0x0000); /* RGB interface setting */
+	write_reg(par, 0x000D, 0x0000); /* Frame marker Position */
+	write_reg(par, 0x000F, 0x0000); /* RGB interface polarity */
+
+	/* ***********Power On sequence *************** */
+	write_reg(par, 0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+	write_reg(par, 0x0011, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
+	write_reg(par, 0x0012, 0x0000); /* VREG1OUT voltage */
+	write_reg(par, 0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
+	mdelay(200); /* Dis-charge capacitor power voltage */
+	write_reg(par, 0x0010, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+	write_reg(par, 0x0011, 0x0031); /* R11h=0x0031 at VCI=3.3V DC1[2:0], DC0[2:0], VC[2:0] */
+	mdelay(50);
+	write_reg(par, 0x0012, 0x0138); /* R12h=0x0138 at VCI=3.3V VREG1OUT voltage */
+	mdelay(50);
+	write_reg(par, 0x0013, 0x1800); /* R13h=0x1800 at VCI=3.3V VDV[4:0] for VCOM amplitude */
+	write_reg(par, 0x0029, 0x0008); /* R29h=0x0008 at VCI=3.3V VCM[4:0] for VCOMH */
+	mdelay(50);
+	write_reg(par, 0x0020, 0x0000); /* GRAM horizontal Address */
+	write_reg(par, 0x0021, 0x0000); /* GRAM Vertical Address */
+
+	/* ------------------ Set GRAM area --------------- */
+	write_reg(par, 0x0050, 0x0000); /* Horizontal GRAM Start Address */
+	write_reg(par, 0x0051, 0x00EF); /* Horizontal GRAM End Address */
+	write_reg(par, 0x0052, 0x0000); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0053, 0x013F); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0060, 0x2700); /* Gate Scan Line */
+	write_reg(par, 0x0061, 0x0001); /* NDL,VLE, REV */
+	write_reg(par, 0x006A, 0x0000); /* set scrolling line */
+
+	/* -------------- Partial Display Control --------- */
+	write_reg(par, 0x0080, 0x0000);
+	write_reg(par, 0x0081, 0x0000);
+	write_reg(par, 0x0082, 0x0000);
+	write_reg(par, 0x0083, 0x0000);
+	write_reg(par, 0x0084, 0x0000);
+	write_reg(par, 0x0085, 0x0000);
+
+	/* -------------- Panel Control ------------------- */
+	write_reg(par, 0x0090, 0x0010);
+	write_reg(par, 0x0092, 0x0000);
+	write_reg(par, 0x0093, 0x0003);
+	write_reg(par, 0x0095, 0x0110);
+	write_reg(par, 0x0097, 0x0000);
+	write_reg(par, 0x0098, 0x0000);
+	write_reg(par, 0x0007, 0x0173); /* 262K color and display ON */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, WIDTH - 1 - xs);
+		write_reg(par, 0x0021, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, WIDTH - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x30);
+		break;
+	case 270:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x28);
+		break;
+	case 180:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x00);
+		break;
+	case 90:
+		write_reg(par, 0x3, (par->bgr << 12) | 0x18);
+		break;
+	}
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 RP0 RP1 KP0 KP1 KP2 KP3 KP4 KP5
+    VRN0 VRN1 RN0 RN1 KN0 KN1 KN2 KN3 KN4 KN5
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111,
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 10; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
+	write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0035, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0036, CURVE(0, 1) << 8 | CURVE(0, 0));
+
+	write_reg(par, 0x0037, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0038, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x0039, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x003C, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x003D, CURVE(1, 1) << 8 | CURVE(1, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 2,
+	.gamma_len = 10,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9320", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9320");
+MODULE_ALIAS("platform:ili9320");
+
+MODULE_DESCRIPTION("FB driver for the ILI9320 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ili9325.c b/drivers/staging/fbtft/fb_ili9325.c
new file mode 100644
index 0000000..5f88145
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9325.c
@@ -0,0 +1,291 @@
+/*
+ * FB driver for the ILI9325 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * Based on ili9325.c by Jeroen Domburg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9325"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+#define FPS		20
+#define DEFAULT_GAMMA	"0F 00 7 2 0 0 6 5 4 1\n" \
+			"04 16 2 7 6 3 2 1 7 7"
+
+
+static unsigned bt = 6; /* VGL=Vci*4 , VGH=Vci*4 */
+module_param(bt, uint, 0);
+MODULE_PARM_DESC(bt, "Sets the factor used in the step-up circuits");
+
+static unsigned vc = 0b011; /* Vci1=Vci*0.80 */
+module_param(vc, uint, 0);
+MODULE_PARM_DESC(vc,
+"Sets the ratio factor of Vci to generate the reference voltages Vci1");
+
+static unsigned vrh = 0b1101; /* VREG1OUT=Vci*1.85 */
+module_param(vrh, uint, 0);
+MODULE_PARM_DESC(vrh,
+"Set the amplifying rate (1.6 ~ 1.9) of Vci applied to output the VREG1OUT");
+
+static unsigned vdv = 0b10010; /* VCOMH amplitude=VREG1OUT*0.98 */
+module_param(vdv, uint, 0);
+MODULE_PARM_DESC(vdv,
+"Select the factor of VREG1OUT to set the amplitude of Vcom");
+
+static unsigned vcm = 0b001010; /* VCOMH=VREG1OUT*0.735 */
+module_param(vcm, uint, 0);
+MODULE_PARM_DESC(vcm, "Set the internal VcomH voltage");
+
+
+/*
+Verify that this configuration is within the Voltage limits
+
+Display module configuration: Vcc = IOVcc = Vci = 3.3V
+
+ Voltages
+----------
+Vci                                =   3.3
+Vci1           =  Vci * 0.80       =   2.64
+DDVDH          =  Vci1 * 2         =   5.28
+VCL            = -Vci1             =  -2.64
+VREG1OUT       =  Vci * 1.85       =   4.88
+VCOMH          =  VREG1OUT * 0.735 =   3.59
+VCOM amplitude =  VREG1OUT * 0.98  =   4.79
+VGH            =  Vci * 4          =  13.2
+VGL            = -Vci * 4          = -13.2
+
+ Limits
+--------
+Power supplies
+1.65 < IOVcc < 3.30   =>  1.65 < 3.3 < 3.30
+2.40 < Vcc   < 3.30   =>  2.40 < 3.3 < 3.30
+2.50 < Vci   < 3.30   =>  2.50 < 3.3 < 3.30
+
+Source/VCOM power supply voltage
+ 4.50 < DDVDH < 6.0   =>  4.50 <  5.28 <  6.0
+-3.0  < VCL   < -2.0  =>  -3.0 < -2.64 < -2.0
+VCI - VCL < 6.0       =>  5.94 < 6.0
+
+Gate driver output voltage
+ 10  < VGH   < 20     =>   10 <  13.2  < 20
+-15  < VGL   < -5     =>  -15 < -13.2  < -5
+VGH - VGL < 32        =>   26.4 < 32
+
+VCOM driver output voltage
+VCOMH - VCOML < 6.0   =>  4.79 < 6.0
+*/
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	bt &= 0b111;
+	vc &= 0b111;
+	vrh &= 0b1111;
+	vdv &= 0b11111;
+	vcm &= 0b111111;
+
+	/* Initialization sequence from ILI9325 Application Notes */
+
+	/* ----------- Start Initial Sequence ----------- */
+	write_reg(par, 0x00E3, 0x3008); /* Set internal timing */
+	write_reg(par, 0x00E7, 0x0012); /* Set internal timing */
+	write_reg(par, 0x00EF, 0x1231); /* Set internal timing */
+	write_reg(par, 0x0001, 0x0100); /* set SS and SM bit */
+	write_reg(par, 0x0002, 0x0700); /* set 1 line inversion */
+	write_reg(par, 0x0004, 0x0000); /* Resize register */
+	write_reg(par, 0x0008, 0x0207); /* set the back porch and front porch */
+	write_reg(par, 0x0009, 0x0000); /* set non-display area refresh cycle */
+	write_reg(par, 0x000A, 0x0000); /* FMARK function */
+	write_reg(par, 0x000C, 0x0000); /* RGB interface setting */
+	write_reg(par, 0x000D, 0x0000); /* Frame marker Position */
+	write_reg(par, 0x000F, 0x0000); /* RGB interface polarity */
+
+	/* ----------- Power On sequence ----------- */
+	write_reg(par, 0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+	write_reg(par, 0x0011, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
+	write_reg(par, 0x0012, 0x0000); /* VREG1OUT voltage */
+	write_reg(par, 0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */
+	mdelay(200); /* Dis-charge capacitor power voltage */
+	write_reg(par, 0x0010, /* SAP, BT[3:0], AP, DSTB, SLP, STB */
+		(1 << 12) | (bt << 8) | (1 << 7) | (0b001 << 4));
+	write_reg(par, 0x0011, 0x220 | vc); /* DC1[2:0], DC0[2:0], VC[2:0] */
+	mdelay(50); /* Delay 50ms */
+	write_reg(par, 0x0012, vrh); /* Internal reference voltage= Vci; */
+	mdelay(50); /* Delay 50ms */
+	write_reg(par, 0x0013, vdv << 8); /* Set VDV[4:0] for VCOM amplitude */
+	write_reg(par, 0x0029, vcm); /* Set VCM[5:0] for VCOMH */
+	write_reg(par, 0x002B, 0x000C); /* Set Frame Rate */
+	mdelay(50); /* Delay 50ms */
+	write_reg(par, 0x0020, 0x0000); /* GRAM horizontal Address */
+	write_reg(par, 0x0021, 0x0000); /* GRAM Vertical Address */
+
+	/*------------------ Set GRAM area --------------- */
+	write_reg(par, 0x0050, 0x0000); /* Horizontal GRAM Start Address */
+	write_reg(par, 0x0051, 0x00EF); /* Horizontal GRAM End Address */
+	write_reg(par, 0x0052, 0x0000); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0053, 0x013F); /* Vertical GRAM Start Address */
+	write_reg(par, 0x0060, 0xA700); /* Gate Scan Line */
+	write_reg(par, 0x0061, 0x0001); /* NDL,VLE, REV */
+	write_reg(par, 0x006A, 0x0000); /* set scrolling line */
+
+	/*-------------- Partial Display Control --------- */
+	write_reg(par, 0x0080, 0x0000);
+	write_reg(par, 0x0081, 0x0000);
+	write_reg(par, 0x0082, 0x0000);
+	write_reg(par, 0x0083, 0x0000);
+	write_reg(par, 0x0084, 0x0000);
+	write_reg(par, 0x0085, 0x0000);
+
+	/*-------------- Panel Control ------------------- */
+	write_reg(par, 0x0090, 0x0010);
+	write_reg(par, 0x0092, 0x0600);
+	write_reg(par, 0x0007, 0x0133); /* 262K color and display ON */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, WIDTH - 1 - xs);
+		write_reg(par, 0x0021, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, WIDTH - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x03, 0x0030 | (par->bgr << 12));
+		break;
+	case 180:
+		write_reg(par, 0x03, 0x0000 | (par->bgr << 12));
+		break;
+	case 270:
+		write_reg(par, 0x03, 0x0028 | (par->bgr << 12));
+		break;
+	case 90:
+		write_reg(par, 0x03, 0x0018 | (par->bgr << 12));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 RP0 RP1 KP0 KP1 KP2 KP3 KP4 KP5
+    VRN0 VRN1 RN0 RN1 KN0 KN1 KN2 KN3 KN4 KN5
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111,
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 10; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
+	write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0035, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0036, CURVE(0, 1) << 8 | CURVE(0, 0));
+
+	write_reg(par, 0x0037, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0038, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x0039, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x003C, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x003D, CURVE(1, 1) << 8 | CURVE(1, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.bpp = BPP,
+	.fps = FPS,
+	.gamma_num = 2,
+	.gamma_len = 10,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9325", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9325");
+MODULE_ALIAS("platform:ili9325");
+
+MODULE_DESCRIPTION("FB driver for the ILI9325 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ili9340.c b/drivers/staging/fbtft/fb_ili9340.c
new file mode 100644
index 0000000..985687d
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9340.c
@@ -0,0 +1,163 @@
+/*
+ * FB driver for the ILI9340 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9340"
+#define WIDTH		240
+#define HEIGHT		320
+
+
+/* Init sequence taken from: Arduino Library for the Adafruit 2.2" display */
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xEF, 0x03, 0x80, 0x02);
+	write_reg(par, 0xCF, 0x00 , 0XC1 , 0X30);
+	write_reg(par, 0xED, 0x64 , 0x03 , 0X12 , 0X81);
+	write_reg(par, 0xE8, 0x85 , 0x00 , 0x78);
+	write_reg(par, 0xCB, 0x39 , 0x2C , 0x00 , 0x34 , 0x02);
+	write_reg(par, 0xF7, 0x20);
+	write_reg(par, 0xEA, 0x00 , 0x00);
+
+	/* Power Control 1 */
+	write_reg(par, 0xC0, 0x23);
+
+	/* Power Control 2 */
+	write_reg(par, 0xC1, 0x10);
+
+	/* VCOM Control 1 */
+	write_reg(par, 0xC5, 0x3e, 0x28);
+
+	/* VCOM Control 2 */
+	write_reg(par, 0xC7, 0x86);
+
+	/* COLMOD: Pixel Format Set */
+	/* 16 bits/pixel */
+	write_reg(par, 0x3A, 0x55);
+
+	/* Frame Rate Control */
+	/* Division ratio = fosc, Frame Rate = 79Hz */
+	write_reg(par, 0xB1, 0x00, 0x18);
+
+	/* Display Function Control */
+	write_reg(par, 0xB6, 0x08, 0x82, 0x27);
+
+	/* Gamma Function Disable */
+	write_reg(par, 0xF2, 0x00);
+
+	/* Gamma curve selected  */
+	write_reg(par, 0x26, 0x01);
+
+	/* Positive Gamma Correction */
+	write_reg(par, 0xE0,
+		0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1,
+		0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00);
+
+	/* Negative Gamma Correction */
+	write_reg(par, 0xE1,
+		0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1,
+		0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F);
+
+	/* Sleep OUT */
+	write_reg(par, 0x11);
+
+	mdelay(120);
+
+	/* Display ON */
+	write_reg(par, 0x29);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define ILI9340_MADCTL_MV  0x20
+#define ILI9340_MADCTL_MX  0x40
+#define ILI9340_MADCTL_MY  0x80
+static int set_var(struct fbtft_par *par)
+{
+	u8 val;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 270:
+		val = ILI9340_MADCTL_MV;
+		break;
+	case 180:
+		val = ILI9340_MADCTL_MY;
+		break;
+	case 90:
+		val = ILI9340_MADCTL_MV | ILI9340_MADCTL_MY | ILI9340_MADCTL_MX;
+		break;
+	default:
+		val = ILI9340_MADCTL_MX;
+		break;
+	}
+	/* Memory Access Control  */
+	write_reg(par, 0x36, val | (par->bgr << 3));
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9340", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9340");
+MODULE_ALIAS("platform:ili9340");
+
+MODULE_DESCRIPTION("FB driver for the ILI9340 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ili9341.c b/drivers/staging/fbtft/fb_ili9341.c
new file mode 100644
index 0000000..225b2d8
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9341.c
@@ -0,0 +1,179 @@
+/*
+ * FB driver for the ILI9341 LCD display controller
+ *
+ * This display uses 9-bit SPI: Data/Command bit + 8 data bits
+ * For platforms that doesn't support 9-bit, the driver is capable
+ * of emulating this using 8-bit transfer.
+ * This is done by transfering eight 9-bit words in 9 bytes.
+ *
+ * Copyright (C) 2013 Christian Vogelgsang
+ * Based on adafruit22fb.c by Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9341"
+#define WIDTH		240
+#define HEIGHT		320
+#define TXBUFLEN	(4 * PAGE_SIZE)
+#define DEFAULT_GAMMA	"1F 1A 18 0A 0F 06 45 87 32 0A 07 02 07 05 00\n" \
+			"00 25 27 05 10 09 3A 78 4D 05 18 0D 38 3A 1F"
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* startup sequence for MI0283QT-9A */
+	write_reg(par, 0x01); /* software reset */
+	mdelay(5);
+	write_reg(par, 0x28); /* display off */
+	/* --------------------------------------------------------- */
+	write_reg(par, 0xCF, 0x00, 0x83, 0x30);
+	write_reg(par, 0xED, 0x64, 0x03, 0x12, 0x81);
+	write_reg(par, 0xE8, 0x85, 0x01, 0x79);
+	write_reg(par, 0xCB, 0x39, 0X2C, 0x00, 0x34, 0x02);
+	write_reg(par, 0xF7, 0x20);
+	write_reg(par, 0xEA, 0x00, 0x00);
+	/* ------------power control-------------------------------- */
+	write_reg(par, 0xC0, 0x26);
+	write_reg(par, 0xC1, 0x11);
+	/* ------------VCOM --------- */
+	write_reg(par, 0xC5, 0x35, 0x3E);
+	write_reg(par, 0xC7, 0xBE);
+	/* ------------memory access control------------------------ */
+	write_reg(par, 0x3A, 0x55); /* 16bit pixel */
+	/* ------------frame rate----------------------------------- */
+	write_reg(par, 0xB1, 0x00, 0x1B);
+	/* ------------Gamma---------------------------------------- */
+	/* write_reg(par, 0xF2, 0x08); */ /* Gamma Function Disable */
+	write_reg(par, 0x26, 0x01);
+	/* ------------display-------------------------------------- */
+	write_reg(par, 0xB7, 0x07); /* entry mode set */
+	write_reg(par, 0xB6, 0x0A, 0x82, 0x27, 0x00);
+	write_reg(par, 0x11); /* sleep out */
+	mdelay(100);
+	write_reg(par, 0x29); /* display on */
+	mdelay(20);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address set */
+	write_reg(par, 0x2A,
+		(xs >> 8) & 0xFF, xs & 0xFF, (xe >> 8) & 0xFF, xe & 0xFF);
+
+	/* Row adress set */
+	write_reg(par, 0x2B,
+		(ys >> 8) & 0xFF, ys & 0xFF, (ye >> 8) & 0xFF, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define MEM_Y   (7) /* MY row address order */
+#define MEM_X   (6) /* MX column address order */
+#define MEM_V   (5) /* MV row / column exchange */
+#define MEM_L   (4) /* ML vertical refresh order */
+#define MEM_H   (2) /* MH horizontal refresh order */
+#define MEM_BGR (3) /* RGB-BGR Order */
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, (1 << MEM_X) | (par->bgr << MEM_BGR));
+		break;
+	case 270:
+		write_reg(par, 0x36,
+			(1<<MEM_V) | (1 << MEM_L) | (par->bgr << MEM_BGR));
+		break;
+	case 180:
+		write_reg(par, 0x36, (1 << MEM_Y) | (par->bgr << MEM_BGR));
+		break;
+	case 90:
+		write_reg(par, 0x36, (1 << MEM_Y) | (1 << MEM_X) |
+				     (1 << MEM_V) | (par->bgr << MEM_BGR));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    Positive: Par1 Par2 [...] Par15
+    Negative: Par1 Par2 [...] Par15
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	int i;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	for (i = 0; i < par->gamma.num_curves; i++)
+		write_reg(par, 0xE0 + i,
+			CURVE(i, 0), CURVE(i, 1), CURVE(i, 2),
+			CURVE(i, 3), CURVE(i, 4), CURVE(i, 5),
+			CURVE(i, 6), CURVE(i, 7), CURVE(i, 8),
+			CURVE(i, 9), CURVE(i, 10), CURVE(i, 11),
+			CURVE(i, 12), CURVE(i, 13), CURVE(i, 14));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 2,
+	.gamma_len = 15,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9341", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9341");
+MODULE_ALIAS("platform:ili9341");
+
+MODULE_DESCRIPTION("FB driver for the ILI9341 LCD display controller");
+MODULE_AUTHOR("Christian Vogelgsang");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ili9481.c b/drivers/staging/fbtft/fb_ili9481.c
new file mode 100644
index 0000000..725157a
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9481.c
@@ -0,0 +1,117 @@
+/*
+ * FB driver for the ILI9481 LCD Controller
+ *
+ * Copyright (c) 2014 Petr Olivka
+ * Copyright (c) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	"fb_ili9481"
+#define WIDTH		320
+#define HEIGHT		480
+
+static int default_init_sequence[] = {
+
+	/* SLP_OUT - Sleep out */
+	-1, 0x11,
+	-2, 50,
+	/* Power setting */
+	-1, 0xD0, 0x07, 0x42, 0x18,
+	/* VCOM */
+	-1, 0xD1, 0x00, 0x07, 0x10,
+	/* Power setting for norm. mode */
+	-1, 0xD2, 0x01, 0x02,
+	/* Panel driving setting */
+	-1, 0xC0, 0x10, 0x3B, 0x00, 0x02, 0x11,
+	/* Frame rate & inv. */
+	-1, 0xC5, 0x03,
+	/* Pixel format */
+	-1, 0x3A, 0x55,
+	/* Gamma */
+	-1, 0xC8, 0x00, 0x32, 0x36, 0x45, 0x06, 0x16,
+		  0x37, 0x75, 0x77, 0x54, 0x0C, 0x00,
+	/* DISP_ON */
+	-1, 0x29,
+	-3
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* column address */
+	write_reg(par, 0x2a, xs >> 8, xs & 0xff, xe >> 8, xe & 0xff);
+
+	/* row adress */
+	write_reg(par, 0x2b, ys >> 8, ys & 0xff, ye >> 8, ye & 0xff);
+
+	/* memory write */
+	write_reg(par, 0x2c);
+}
+
+#define HFLIP 0x01
+#define VFLIP 0x02
+#define ROWxCOL 0x20
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 270:
+		write_reg(par, 0x36, ROWxCOL | HFLIP | VFLIP | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, VFLIP | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, ROWxCOL | (par->bgr << 3));
+		break;
+	default:
+		write_reg(par, 0x36, HFLIP | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.init_sequence = default_init_sequence,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9481", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9481");
+MODULE_ALIAS("platform:ili9481");
+
+MODULE_DESCRIPTION("FB driver for the ILI9481 LCD Controller");
+MODULE_AUTHOR("Petr Olivka");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ili9486.c b/drivers/staging/fbtft/fb_ili9486.c
new file mode 100644
index 0000000..95b8999
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ili9486.c
@@ -0,0 +1,121 @@
+/*
+ * FB driver for the ILI9486 LCD Controller
+ *
+ * Copyright (C) 2014 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ili9486"
+#define WIDTH		320
+#define HEIGHT		480
+
+
+/* this init sequence matches PiScreen */
+static int default_init_sequence[] = {
+	/* Interface Mode Control */
+	-1, 0xb0, 0x0,
+	/* Sleep OUT */
+	-1, 0x11,
+	-2, 250,
+	/* Interface Pixel Format */
+	-1, 0x3A, 0x55,
+	/* Power Control 3 */
+	-1, 0xC2, 0x44,
+	/* VCOM Control 1 */
+	-1, 0xC5, 0x00, 0x00, 0x00, 0x00,
+	/* PGAMCTRL(Positive Gamma Control) */
+	-1, 0xE0, 0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98,
+	          0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00,
+	/* NGAMCTRL(Negative Gamma Control) */
+	-1, 0xE1, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+	          0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
+	/* Digital Gamma Control 1 */
+	-1, 0xE2, 0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75,
+	          0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00,
+	/* Sleep OUT */
+	-1, 0x11,
+	/* Display ON */
+	-1, 0x29,
+	/* end marker */
+	-3
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, 0x80 | (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, 0x20 | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, 0x40 | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, 0xE0 | (par->bgr << 3));
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.init_sequence = default_init_sequence,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9486", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ili9486");
+MODULE_ALIAS("platform:ili9486");
+
+MODULE_DESCRIPTION("FB driver for the ILI9486 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_pcd8544.c b/drivers/staging/fbtft/fb_pcd8544.c
new file mode 100644
index 0000000..678ab8e
--- /dev/null
+++ b/drivers/staging/fbtft/fb_pcd8544.c
@@ -0,0 +1,177 @@
+/*
+ * FB driver for the PCD8544 LCD Controller
+ *
+ * The display is monochrome and the video memory is RGB565.
+ * Any pixel value except 0 turns the pixel on.
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	       "fb_pcd8544"
+#define WIDTH          84
+#define HEIGHT         48
+#define TXBUFLEN       84*6
+#define DEFAULT_GAMMA  "40" /* gamma is used to control contrast in this driver */
+
+static unsigned tc = 0;
+module_param(tc, uint, 0);
+MODULE_PARM_DESC(tc, "TC[1:0] Temperature coefficient: 0-3 (default: 0)");
+
+static unsigned bs = 4;
+module_param(bs, uint, 0);
+MODULE_PARM_DESC(bs, "BS[2:0] Bias voltage level: 0-7 (default: 4)");
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* Function set */
+	write_reg(par, 0x21); /* 5:1  1
+	                         2:0  PD - Powerdown control: chip is active
+							 1:0  V  - Entry mode: horizontal addressing
+							 0:1  H  - Extended instruction set control: extended
+						  */
+
+	/* H=1 Temperature control */
+	write_reg(par, 0x04 | (tc & 0x3)); /* 
+	                         2:1  1
+	                         1:x  TC1 - Temperature Coefficient: 0x10
+							 0:x  TC0
+						  */
+
+	/* H=1 Bias system */
+	write_reg(par, 0x10 | (bs & 0x7)); /* 
+	                         4:1  1
+	                         3:0  0
+							 2:x  BS2 - Bias System
+							 1:x  BS1
+							 0:x  BS0
+	                      */
+
+	/* Function set */
+	write_reg(par, 0x22); /* 5:1  1
+	                         2:0  PD - Powerdown control: chip is active
+							 1:1  V  - Entry mode: vertical addressing
+							 0:0  H  - Extended instruction set control: basic
+						  */
+
+	/* H=0 Display control */
+	write_reg(par, 0x08 | 4); /* 
+	                         3:1  1
+	                         2:1  D  - DE: 10=normal mode
+							 1:0  0
+							 0:0  E
+						  */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* H=0 Set X address of RAM */
+	write_reg(par, 0x80); /* 7:1  1
+	                         6-0: X[6:0] - 0x00
+	                      */
+
+	/* H=0 Set Y address of RAM */
+	write_reg(par, 0x40); /* 7:0  0
+	                         6:1  1
+	                         2-0: Y[2:0] - 0x0
+	                      */
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (x=0;x<84;x++) {
+		for (y=0;y<6;y++) {
+			*buf = 0x00;
+			for (i=0;i<8;i++) {
+				*buf |= (vmem16[(y*8+i)*84+x] ? 1 : 0) << i;
+			}
+			buf++;
+		}
+	}
+
+	/* Write data */
+	gpio_set_value(par->gpio.dc, 1);
+	ret = par->fbtftops.write(par, par->txbuf.buf, 6*84);
+	if (ret < 0)
+		dev_err(par->info->device, "%s: write failed and returned: %d\n", __func__, ret);
+
+	return ret;
+}
+
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	curves[0] &= 0x7F;
+
+	write_reg(par, 0x23); /* turn on extended instruction set */
+	write_reg(par, 0x80 | curves[0]);
+	write_reg(par, 0x22); /* turn off extended instruction set */
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 1,
+	.gamma_len = 1,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_vmem = write_vmem,
+		.set_gamma = set_gamma,
+	},
+	.backlight = 1,
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "philips,pdc8544", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:pdc8544");
+
+MODULE_DESCRIPTION("FB driver for the PCD8544 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ra8875.c b/drivers/staging/fbtft/fb_ra8875.c
new file mode 100644
index 0000000..c323c06
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ra8875.c
@@ -0,0 +1,331 @@
+/******************************************************************************
+
+  ProjectName: FBTFT driver                       ***** *****
+	       for the RA8875 LCD Controller     *     *      ************
+						*   **   **   *           *
+  Copyright © by Pf@nne & NOTRO                *   *   *   *   *   ****	   *
+						*   *       *   *   *   *   *
+  Last modification by:                        *   *       *   *   ****    *
+  - Pf@nne (pf@nne-mail.de)                     *   *     *****           *
+						 *   *        *   *******
+						  *****      *   *
+  Date    : 10.06.2014                                      *   *
+  Version : V1.13                                          *****
+  Revison : 5
+
+*******************************************************************************
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <linux/gpio.h>
+#include "fbtft.h"
+
+#define DRVNAME "fb_ra8875"
+
+static int write_spi(struct fbtft_par *par, void *buf, size_t len)
+{
+	struct spi_transfer t = {
+		.tx_buf = buf,
+		.len = len,
+		.speed_hz = 1000000,
+	};
+	struct spi_message m;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	if (!par->spi) {
+		dev_err(par->info->device,
+			"%s: par->spi is unexpectedly NULL\n", __func__);
+		return -1;
+	}
+
+	spi_message_init(&m);
+	if (par->txbuf.dma && buf == par->txbuf.buf) {
+		t.tx_dma = par->txbuf.dma;
+		m.is_dma_mapped = 1;
+	}
+	spi_message_add_tail(&t, &m);
+	return spi_sync(par->spi, &m);
+}
+
+static int init_display(struct fbtft_par *par)
+{
+	gpio_set_value(par->gpio.dc, 1);
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+		"%s()\n", __func__);
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+		"display size %dx%d\n", par->info->var.xres, par->info->var.yres);
+
+	par->fbtftops.reset(par);
+
+	if ((par->info->var.xres == 320) && (par->info->var.yres == 240)) {
+		/* PLL clock frequency */
+		write_reg(par, 0x88 , 0x0A);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period  */
+		write_reg(par, 0x04 , 0x03);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x27);
+		write_reg(par, 0x15 , 0x00);
+		write_reg(par, 0x16 , 0x05);
+		write_reg(par, 0x17 , 0x04);
+		write_reg(par, 0x18 , 0x03);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0xEF);
+		write_reg(par, 0x1A , 0x00);
+		write_reg(par, 0x1B , 0x05);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x0E);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x02);
+	} else if ((par->info->var.xres == 480) && (par->info->var.yres == 272)) {
+		/* PLL clock frequency  */
+		write_reg(par, 0x88 , 0x0A);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period  */
+		write_reg(par, 0x04 , 0x82);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x3B);
+		write_reg(par, 0x15 , 0x00);
+		write_reg(par, 0x16 , 0x01);
+		write_reg(par, 0x17 , 0x00);
+		write_reg(par, 0x18 , 0x05);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0x0F);
+		write_reg(par, 0x1A , 0x01);
+		write_reg(par, 0x1B , 0x02);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x07);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x09);
+	} else if ((par->info->var.xres == 640) && (par->info->var.yres == 480)) {
+		/* PLL clock frequency */
+		write_reg(par, 0x88 , 0x0B);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period */
+		write_reg(par, 0x04 , 0x01);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x4F);
+		write_reg(par, 0x15 , 0x05);
+		write_reg(par, 0x16 , 0x0F);
+		write_reg(par, 0x17 , 0x01);
+		write_reg(par, 0x18 , 0x00);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0xDF);
+		write_reg(par, 0x1A , 0x01);
+		write_reg(par, 0x1B , 0x0A);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x0E);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x01);
+	} else if ((par->info->var.xres == 800) && (par->info->var.yres == 480)) {
+		/* PLL clock frequency */
+		write_reg(par, 0x88 , 0x0B);
+		write_reg(par, 0x89 , 0x02);
+		mdelay(10);
+		/* color deep / MCU Interface */
+		write_reg(par, 0x10 , 0x0C);
+		/* pixel clock period */
+		write_reg(par, 0x04 , 0x81);
+		mdelay(1);
+		/* horizontal settings */
+		write_reg(par, 0x14 , 0x63);
+		write_reg(par, 0x15 , 0x03);
+		write_reg(par, 0x16 , 0x03);
+		write_reg(par, 0x17 , 0x02);
+		write_reg(par, 0x18 , 0x00);
+		/* vertical settings */
+		write_reg(par, 0x19 , 0xDF);
+		write_reg(par, 0x1A , 0x01);
+		write_reg(par, 0x1B , 0x14);
+		write_reg(par, 0x1C , 0x00);
+		write_reg(par, 0x1D , 0x06);
+		write_reg(par, 0x1E , 0x00);
+		write_reg(par, 0x1F , 0x01);
+	} else {
+		dev_err(par->info->device, "display size is not supported!!");
+		return -1;
+	}
+
+	/* PWM clock */
+	write_reg(par, 0x8a , 0x81);
+	write_reg(par, 0x8b , 0xFF);
+	mdelay(10);
+
+	/* Display ON */
+	write_reg(par, 0x01 , 0x80);
+	mdelay(10);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Set_Active_Window */
+	write_reg(par, 0x30 , xs & 0x00FF);
+	write_reg(par, 0x31 , (xs & 0xFF00) >> 8);
+	write_reg(par, 0x32 , ys & 0x00FF);
+	write_reg(par, 0x33 , (ys & 0xFF00) >> 8);
+	write_reg(par, 0x34 , (xs+xe) & 0x00FF);
+	write_reg(par, 0x35 , ((xs+xe) & 0xFF00) >> 8);
+	write_reg(par, 0x36 , (ys+ye) & 0x00FF);
+	write_reg(par, 0x37 , ((ys+ye) & 0xFF00) >> 8);
+
+	/* Set_Memory_Write_Cursor */
+	write_reg(par, 0x46,  xs & 0xff);
+	write_reg(par, 0x47, (xs >> 8) & 0x03);
+	write_reg(par, 0x48,  ys & 0xff);
+	write_reg(par, 0x49, (ys >> 8) & 0x01);
+
+	write_reg(par, 0x02);
+}
+
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = (u8 *)par->buf;
+
+	/* slow down spi-speed for writing registers */
+	par->fbtftops.write = write_spi;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++)
+			buf[i] = (u8)va_arg(args, unsigned int);
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device,
+			u8, buf, len, "%s: ", __func__);
+	}
+
+	va_start(args, len);
+	*buf++ = 0x80;
+	*buf = (u8)va_arg(args, unsigned int);
+	ret = par->fbtftops.write(par, par->buf, 2);
+	if (ret < 0) {
+		va_end(args);
+		dev_err(par->info->device, "%s: write() failed and returned %dn",
+			__func__, ret);
+		return;
+	}
+	len--;
+
+	udelay(100);
+
+	if (len) {
+		buf = (u8 *)par->buf;
+		*buf++ = 0x00;
+		i = len;
+		while (i--)
+			*buf++ = (u8)va_arg(args, unsigned int);
+
+		ret = par->fbtftops.write(par, par->buf, len + 1);
+		if (ret < 0) {
+			va_end(args);
+			dev_err(par->info->device, "%s: write() failed and returned %dn",
+				__func__, ret);
+			return;
+		}
+	}
+	va_end(args);
+
+	/* restore user spi-speed */
+	par->fbtftops.write = fbtft_write_spi;
+	udelay(100);
+}
+
+static int write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16;
+	u16 *txbuf16 = (u16 *)par->txbuf.buf;
+	size_t remain;
+	size_t to_copy;
+	size_t tx_array_size;
+	int i;
+	int ret = 0;
+	size_t startbyte_size = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	remain = len / 2;
+	vmem16 = (u16 *)(par->info->screen_base + offset);
+	tx_array_size = par->txbuf.len / 2;
+		txbuf16 = (u16 *)(par->txbuf.buf + 1);
+		tx_array_size -= 2;
+		*(u8 *)(par->txbuf.buf) = 0x00;
+		startbyte_size = 1;
+
+	while (remain) {
+		to_copy = remain > tx_array_size ? tx_array_size : remain;
+		dev_dbg(par->info->device, "    to_copy=%zu, remain=%zu\n",
+			to_copy, remain - to_copy);
+
+		for (i = 0; i < to_copy; i++)
+			txbuf16[i] = cpu_to_be16(vmem16[i]);
+
+		vmem16 = vmem16 + to_copy;
+		ret = par->fbtftops.write(par, par->txbuf.buf,
+			startbyte_size + to_copy * 2);
+		if (ret < 0)
+			return ret;
+		remain -= to_copy;
+	}
+
+	return ret;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_register = write_reg8_bus8,
+		.write_vmem = write_vmem16_bus8,
+		.write = write_spi,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "raio,ra8875", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ra8875");
+MODULE_ALIAS("platform:ra8875");
+
+MODULE_DESCRIPTION("FB driver for the RA8875 LCD Controller");
+MODULE_AUTHOR("Pf@nne");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_s6d02a1.c b/drivers/staging/fbtft/fb_s6d02a1.c
new file mode 100644
index 0000000..e412a42
--- /dev/null
+++ b/drivers/staging/fbtft/fb_s6d02a1.c
@@ -0,0 +1,168 @@
+/*
+ * FB driver for the S6D02A1 LCD Controller
+ *
+ * Based on fb_st7735r.c by Noralf Tronnes
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_s6d02a1"
+
+static int default_init_sequence[] = {
+
+	-1, 0xf0, 0x5a, 0x5a,
+
+	-1, 0xfc, 0x5a, 0x5a,
+
+	-1, 0xfa, 0x02, 0x1f, 0x00, 0x10, 0x22, 0x30, 0x38, 0x3A, 0x3A, 0x3A, 0x3A, 0x3A, 0x3d, 0x02, 0x01,
+
+	-1, 0xfb, 0x21, 0x00, 0x02, 0x04, 0x07, 0x0a, 0x0b, 0x0c, 0x0c, 0x16, 0x1e, 0x30, 0x3f, 0x01, 0x02,
+
+	/* power setting sequence */
+	-1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x01, 0x01, 0x00, 0x1f, 0x1f,
+
+	-1, 0xf4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
+
+	-1, 0xf5, 0x00, 0x70, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6d, 0x66, 0x06,
+
+	-1, 0xf6, 0x02, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x02, 0x00, 0x06, 0x01, 0x00,
+
+	-1, 0xf2, 0x00, 0x01, 0x03, 0x08, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x04, 0x08, 0x08,
+
+	-1, 0xf8, 0x11,
+
+	-1, 0xf7, 0xc8, 0x20, 0x00, 0x00,
+
+	-1, 0xf3, 0x00, 0x00,
+
+	-1, 0x11,
+	-2, 50,
+
+	-1, 0xf3, 0x00, 0x01,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x03,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x07,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x0f,
+	-2, 50,
+
+	-1, 0xf4, 0x00, 0x04, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
+	-2, 50,
+
+	-1, 0xf3, 0x00, 0x1f,
+	-2, 50,
+	-1, 0xf3, 0x00, 0x7f,
+	-2, 50,
+
+	-1, 0xf3, 0x00, 0xff,
+	-2, 50,
+
+	-1, 0xfd, 0x00, 0x00, 0x00, 0x17, 0x10, 0x00, 0x00, 0x01, 0x00, 0x16, 0x16,
+
+	-1, 0xf4, 0x00, 0x09, 0x00, 0x00, 0x00, 0x3f, 0x3f, 0x07, 0x00, 0x3C, 0x36, 0x00, 0x3C, 0x36, 0x00,
+
+	/* initializing sequence */
+
+	-1, 0x36, 0x08,
+
+	-1, 0x35, 0x00,
+
+	-1, 0x3a, 0x05,
+
+	/* gamma setting sequence */
+	-1, 0x26, 0x01,	/* preset gamma curves, possible values 0x01, 0x02, 0x04, 0x08 */
+
+	-2, 150,
+	-1, 0x29,
+	-1, 0x2c,
+	/* end marker */
+	-3
+
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define MY (1 << 7)
+#define MX (1 << 6)
+#define MV (1 << 5)
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* MADCTL - Memory data access control
+	     RGB/BGR:
+		1. Mode selection pin SRGB
+			RGB H/W pin for color filter setting: 0=RGB, 1=BGR
+		2. MADCTL RGB bit
+			RGB-BGR ORDER color filter panel: 0=RGB, 1=BGR */
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, MX | MY | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, MY | MV | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, MX | MV | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = 128,
+	.height = 160,
+	.init_sequence = default_init_sequence,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "samsung,s6d02a1", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:s6d02a1");
+MODULE_ALIAS("platform:s6d02a1");
+
+MODULE_DESCRIPTION("FB driver for the S6D02A1 LCD Controller");
+MODULE_AUTHOR("WOLFGANG BUENING");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_s6d1121.c b/drivers/staging/fbtft/fb_s6d1121.c
new file mode 100644
index 0000000..1ef8c1a
--- /dev/null
+++ b/drivers/staging/fbtft/fb_s6d1121.c
@@ -0,0 +1,208 @@
+/*
+ * FB driver for the S6D1121 LCD Controller
+ *
+ * Copyright (C) 2013 Roman Rolinsky
+ *
+ * Based on fb_ili9325.c by Noralf Tronnes
+ * Based on ili9325.c by Jeroen Domburg
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_s6d1121"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+#define FPS		20
+#define DEFAULT_GAMMA	"26 09 24 2C 1F 23 24 25 22 26 25 23 0D 00\n" \
+			"1C 1A 13 1D 0B 11 12 10 13 15 36 19 00 0D"
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	/* Initialization sequence from Lib_UTFT */
+
+	write_reg(par, 0x0011, 0x2004);
+	write_reg(par, 0x0013, 0xCC00);
+	write_reg(par, 0x0015, 0x2600);
+	write_reg(par, 0x0014, 0x252A);
+	write_reg(par, 0x0012, 0x0033);
+	write_reg(par, 0x0013, 0xCC04);
+	write_reg(par, 0x0013, 0xCC06);
+	write_reg(par, 0x0013, 0xCC4F);
+	write_reg(par, 0x0013, 0x674F);
+	write_reg(par, 0x0011, 0x2003);
+	write_reg(par, 0x0016, 0x0007);
+	write_reg(par, 0x0002, 0x0013);
+	write_reg(par, 0x0003, 0x0003);
+	write_reg(par, 0x0001, 0x0127);
+	write_reg(par, 0x0008, 0x0303);
+	write_reg(par, 0x000A, 0x000B);
+	write_reg(par, 0x000B, 0x0003);
+	write_reg(par, 0x000C, 0x0000);
+	write_reg(par, 0x0041, 0x0000);
+	write_reg(par, 0x0050, 0x0000);
+	write_reg(par, 0x0060, 0x0005);
+	write_reg(par, 0x0070, 0x000B);
+	write_reg(par, 0x0071, 0x0000);
+	write_reg(par, 0x0078, 0x0000);
+	write_reg(par, 0x007A, 0x0000);
+	write_reg(par, 0x0079, 0x0007);
+	write_reg(par, 0x0007, 0x0051);
+	write_reg(par, 0x0007, 0x0053);
+	write_reg(par, 0x0079, 0x0000);
+
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, WIDTH - 1 - xs);
+		write_reg(par, 0x0021, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, WIDTH - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, HEIGHT - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x03, 0x0003 | (par->bgr << 12));
+		break;
+	case 180:
+		write_reg(par, 0x03, 0x0000 | (par->bgr << 12));
+		break;
+	case 270:
+		write_reg(par, 0x03, 0x000A | (par->bgr << 12));
+		break;
+	case 90:
+		write_reg(par, 0x03, 0x0009 | (par->bgr << 12));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    PKP0 PKP1 PKP2 PKP3 PKP4 PKP5 PKP6 PKP7 PKP8 PKP9 PKP10 PKP11 VRP0 VRP1
+    PKN0 PKN1 PKN2 PKN3 PKN4 PKN5 PKN6 PKN7 PRN8 PRN9 PRN10 PRN11 VRN0 VRN1
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b11111, 0b11111,
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b111111, 0b111111, 0b111111, 0b111111, 0b111111, 0b111111,
+		0b11111, 0b11111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 14; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 1) << 8 | CURVE(0, 0));
+	write_reg(par, 0x0031, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0032, CURVE(0, 5) << 8 | CURVE(0, 3));
+	write_reg(par, 0x0033, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0034, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0035, CURVE(0, 11) << 8 | CURVE(0, 10));
+
+	write_reg(par, 0x0036, CURVE(1, 1) << 8 | CURVE(1, 0));
+	write_reg(par, 0x0037, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x0038, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0039, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x003A, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x003B, CURVE(1, 11) << 8 | CURVE(1, 10));
+
+	write_reg(par, 0x003C, CURVE(0, 13) << 8 | CURVE(0, 12));
+	write_reg(par, 0x003D, CURVE(1, 13) << 8 | CURVE(1, 12));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.bpp = BPP,
+	.fps = FPS,
+	.gamma_num = 2,
+	.gamma_len = 14,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "samsung,s6d1121", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:s6d1121");
+MODULE_ALIAS("platform:s6d1121");
+
+MODULE_DESCRIPTION("FB driver for the S6D1121 LCD Controller");
+MODULE_AUTHOR("Roman Rolinsky");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ssd1289.c b/drivers/staging/fbtft/fb_ssd1289.c
new file mode 100644
index 0000000..ef46fbc
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ssd1289.c
@@ -0,0 +1,206 @@
+/*
+ * FB driver for the SSD1289 LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * Init sequence taken from ITDB02_Graph16.cpp - (C)2010-2011 Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1289"
+#define WIDTH		240
+#define HEIGHT		320
+#define DEFAULT_GAMMA	"02 03 2 5 7 7 4 2 4 2\n" \
+			"02 03 2 5 7 5 4 2 4 2"
+
+static unsigned reg11 = 0x6040;
+module_param(reg11, uint, 0);
+MODULE_PARM_DESC(reg11, "Register 11h value");
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	write_reg(par, 0x00, 0x0001);
+	write_reg(par, 0x03, 0xA8A4);
+	write_reg(par, 0x0C, 0x0000);
+	write_reg(par, 0x0D, 0x080C);
+	write_reg(par, 0x0E, 0x2B00);
+	write_reg(par, 0x1E, 0x00B7);
+	write_reg(par, 0x01,
+		(1 << 13) | (par->bgr << 11) | (1 << 9) | (HEIGHT - 1));
+	write_reg(par, 0x02, 0x0600);
+	write_reg(par, 0x10, 0x0000);
+	write_reg(par, 0x05, 0x0000);
+	write_reg(par, 0x06, 0x0000);
+	write_reg(par, 0x16, 0xEF1C);
+	write_reg(par, 0x17, 0x0003);
+	write_reg(par, 0x07, 0x0233);
+	write_reg(par, 0x0B, 0x0000);
+	write_reg(par, 0x0F, 0x0000);
+	write_reg(par, 0x41, 0x0000);
+	write_reg(par, 0x42, 0x0000);
+	write_reg(par, 0x48, 0x0000);
+	write_reg(par, 0x49, 0x013F);
+	write_reg(par, 0x4A, 0x0000);
+	write_reg(par, 0x4B, 0x0000);
+	write_reg(par, 0x44, 0xEF00);
+	write_reg(par, 0x45, 0x0000);
+	write_reg(par, 0x46, 0x013F);
+	write_reg(par, 0x23, 0x0000);
+	write_reg(par, 0x24, 0x0000);
+	write_reg(par, 0x25, 0x8000);
+	write_reg(par, 0x4f, 0x0000);
+	write_reg(par, 0x4e, 0x0000);
+	write_reg(par, 0x22);
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	switch (par->info->var.rotate) {
+	/* R4Eh - Set GDDRAM X address counter */
+	/* R4Fh - Set GDDRAM Y address counter */
+	case 0:
+		write_reg(par, 0x4e, xs);
+		write_reg(par, 0x4f, ys);
+		break;
+	case 180:
+		write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
+		write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
+		write_reg(par, 0x4f, xs);
+		break;
+	case 90:
+		write_reg(par, 0x4e, ys);
+		write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
+		break;
+	}
+
+	/* R22h - RAM data write */
+	write_reg(par, 0x22);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->fbtftops.init_display != init_display) {
+		/* don't risk messing up register 11h */
+		fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+			"%s: skipping since custom init_display() is used\n",
+			__func__);
+		return 0;
+	}
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x11, reg11 | 0b110000);
+		break;
+	case 270:
+		write_reg(par, 0x11, reg11 | 0b101000);
+		break;
+	case 180:
+		write_reg(par, 0x11, reg11 | 0b000000);
+		break;
+	case 90:
+		write_reg(par, 0x11, reg11 | 0b011000);
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRP0 VRP1 PRP0 PRP1 PKP0 PKP1 PKP2 PKP3 PKP4 PKP5
+    VRN0 VRN1 PRN0 PRN1 PKN0 PKN1 PKN2 PKN3 PKN4 PKN5
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long mask[] = {
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111,
+		0b11111, 0b11111, 0b111, 0b111, 0b111,
+		0b111, 0b111, 0b111, 0b111, 0b111 };
+	int i, j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 10; j++)
+			CURVE(i, j) &= mask[i*par->gamma.num_values + j];
+
+	write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
+	write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
+	write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
+	write_reg(par, 0x0033, CURVE(0, 3) << 8 | CURVE(0, 2));
+	write_reg(par, 0x0034, CURVE(1, 5) << 8 | CURVE(1, 4));
+	write_reg(par, 0x0035, CURVE(1, 7) << 8 | CURVE(1, 6));
+	write_reg(par, 0x0036, CURVE(1, 9) << 8 | CURVE(1, 8));
+	write_reg(par, 0x0037, CURVE(1, 3) << 8 | CURVE(1, 2));
+	write_reg(par, 0x003A, CURVE(0, 1) << 8 | CURVE(0, 0));
+	write_reg(par, 0x003B, CURVE(1, 1) << 8 | CURVE(1, 0));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 2,
+	.gamma_len = 10,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1289", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1289");
+MODULE_ALIAS("platform:ssd1289");
+
+MODULE_DESCRIPTION("FB driver for the SSD1289 LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ssd1306.c b/drivers/staging/fbtft/fb_ssd1306.c
new file mode 100644
index 0000000..5ea195b
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ssd1306.c
@@ -0,0 +1,229 @@
+/*
+ * FB driver for the SSD1306 OLED Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1306"
+#define WIDTH		128
+#define HEIGHT		64
+
+
+/*
+  write_reg() caveat:
+
+     This doesn't work because D/C has to be LOW for both values:
+       write_reg(par, val1, val2);
+
+     Do it like this:
+       write_reg(par, val1);
+       write_reg(par, val2);
+*/
+
+/* Init sequence taken from the Adafruit SSD1306 Arduino library */
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gamma.curves[0] == 0) {
+		mutex_lock(&par->gamma.lock);
+		if (par->info->var.yres == 64)
+			par->gamma.curves[0] = 0xCF;
+		else
+			par->gamma.curves[0] = 0x8F;
+		mutex_unlock(&par->gamma.lock);
+	}
+
+	/* Set Display OFF */
+	write_reg(par, 0xAE);
+
+	/* Set Display Clock Divide Ratio/ Oscillator Frequency */
+	write_reg(par, 0xD5);
+	write_reg(par, 0x80);
+
+	/* Set Multiplex Ratio */
+	write_reg(par, 0xA8);
+	if (par->info->var.yres == 64)
+		write_reg(par, 0x3F);
+	else
+		write_reg(par, 0x1F);
+
+	/* Set Display Offset */
+	write_reg(par, 0xD3);
+	write_reg(par, 0x0);
+
+	/* Set Display Start Line */
+	write_reg(par, 0x40 | 0x0);
+
+	/* Charge Pump Setting */
+	write_reg(par, 0x8D);
+	/* A[2] = 1b, Enable charge pump during display on */
+	write_reg(par, 0x14);
+
+	/* Set Memory Addressing Mode */
+	write_reg(par, 0x20);
+	/* Vertical addressing mode  */
+	write_reg(par, 0x01);
+
+	/*Set Segment Re-map */
+	/* column address 127 is mapped to SEG0 */
+	write_reg(par, 0xA0 | 0x1);
+
+	/* Set COM Output Scan Direction */
+	/* remapped mode. Scan from COM[N-1] to COM0 */
+	write_reg(par, 0xC8);
+
+	/* Set COM Pins Hardware Configuration */
+	write_reg(par, 0xDA);
+	if (par->info->var.yres == 64)
+		/* A[4]=1b, Alternative COM pin configuration */
+		write_reg(par, 0x12);
+	else
+		/* A[4]=0b, Sequential COM pin configuration */
+		write_reg(par, 0x02);
+
+	/* Set Pre-charge Period */
+	write_reg(par, 0xD9);
+	write_reg(par, 0xF1);
+
+	/* Set VCOMH Deselect Level */
+	write_reg(par, 0xDB);
+	/* according to the datasheet, this value is out of bounds */
+	write_reg(par, 0x40);
+
+	/* Entire Display ON */
+	/* Resume to RAM content display. Output follows RAM content */
+	write_reg(par, 0xA4);
+
+	/* Set Normal Display
+	   0 in RAM: OFF in display panel
+	   1 in RAM: ON in display panel */
+	write_reg(par, 0xA6);
+
+	/* Set Display ON */
+	write_reg(par, 0xAF);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Set Lower Column Start Address for Page Addressing Mode */
+	write_reg(par, 0x00 | 0x0);
+	/* Set Higher Column Start Address for Page Addressing Mode */
+	write_reg(par, 0x10 | 0x0);
+	/* Set Display Start Line */
+	write_reg(par, 0x40 | 0x0);
+}
+
+static int blank(struct fbtft_par *par, bool on)
+{
+	fbtft_par_dbg(DEBUG_BLANK, par, "%s(blank=%s)\n",
+		__func__, on ? "true" : "false");
+
+	if (on)
+		write_reg(par, 0xAE);
+	else
+		write_reg(par, 0xAF);
+	return 0;
+}
+
+/* Gamma is used to control Contrast */
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	curves[0] &= 0xFF;
+
+	/* Set Contrast Control for BANK0 */
+	write_reg(par, 0x81);
+	write_reg(par, curves[0]);
+
+	return 0;
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (x = 0; x < par->info->var.xres; x++) {
+		for (y = 0; y < par->info->var.yres/8; y++) {
+			*buf = 0x00;
+			for (i = 0; i < 8; i++)
+				*buf |= (vmem16[(y*8+i)*par->info->var.xres+x] ? 1 : 0) << i;
+			buf++;
+		}
+	}
+
+	/* Write data */
+	gpio_set_value(par->gpio.dc, 1);
+	ret = par->fbtftops.write(par, par->txbuf.buf,
+				par->info->var.xres*par->info->var.yres/8);
+	if (ret < 0)
+		dev_err(par->info->device,
+			"%s: write failed and returned: %d\n", __func__, ret);
+
+	return ret;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = 1,
+	.gamma_len = 1,
+	.gamma = "00",
+	.fbtftops = {
+		.write_vmem = write_vmem,
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.blank = blank,
+		.set_gamma = set_gamma,
+	},
+};
+
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1306", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1306");
+MODULE_ALIAS("platform:ssd1306");
+
+MODULE_DESCRIPTION("SSD1306 OLED Driver");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ssd1331.c b/drivers/staging/fbtft/fb_ssd1331.c
new file mode 100644
index 0000000..da7464f
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ssd1331.c
@@ -0,0 +1,205 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1331"
+#define WIDTH		96
+#define HEIGHT		64
+#define GAMMA_NUM	1
+#define GAMMA_LEN	63
+#define DEFAULT_GAMMA	"0 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2" \
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xae); /* Display Off */
+	write_reg(par, 0xa0, 0x70 | (par->bgr << 2)); /* Set Colour Depth */
+	write_reg(par, 0x72); // RGB colour
+	write_reg(par, 0xa1, 0x00); /* Set Display Start Line */
+	write_reg(par, 0xa2, 0x00); /* Set Display Offset */
+	write_reg(par, 0xa4); /* NORMALDISPLAY */
+	write_reg(par, 0xa8, 0x3f); // Set multiplex
+	write_reg(par, 0xad, 0x8e); // Set master
+	// write_reg(par, 0xb0, 0x0b); // Set power mode
+	write_reg(par, 0xb1, 0x31); // Precharge
+	write_reg(par, 0xb3, 0xf0); // Clock div
+	write_reg(par, 0x8a, 0x64); // Precharge A
+	write_reg(par, 0x8b, 0x78); // Precharge B
+	write_reg(par, 0x8c, 0x64); // Precharge C
+	write_reg(par, 0xbb, 0x3a); // Precharge level
+	write_reg(par, 0xbe, 0x3e); // vcomh
+	write_reg(par, 0x87, 0x06); // Master current
+	write_reg(par, 0x81, 0x91); // Contrast A
+	write_reg(par, 0x82, 0x50); // Contrast B
+	write_reg(par, 0x83, 0x7d); // Contrast C
+	write_reg(par, 0xaf); /* Set Sleep Mode Display On */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x15, xs, xe);
+	write_reg(par, 0x75, ys, ye);
+}
+
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = (u8 *)par->buf;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++) {
+			buf[i] = (u8)va_arg(args, unsigned int);
+		}
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device, u8, buf, len, "%s: ", __func__);
+	}
+
+	va_start(args, len);
+
+	*buf = (u8)va_arg(args, unsigned int);
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 0);
+	ret = par->fbtftops.write(par, par->buf, sizeof(u8));
+	if (ret < 0) {
+		va_end(args);
+		dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret);
+		return;
+	}
+	len--;
+
+	if (len) {
+		i = len;
+		while (i--) {
+			*buf++ = (u8)va_arg(args, unsigned int);
+		}
+		ret = par->fbtftops.write(par, par->buf, len * (sizeof(u8)));
+		if (ret < 0) {
+			va_end(args);
+			dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret);
+			return;
+		}
+	}
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 1);
+	va_end(args);
+}
+
+/*
+	Grayscale Lookup Table
+	GS1 - GS63
+	The driver Gamma curve contains the relative values between the entries
+	in the Lookup table.
+
+	From datasheet:
+	8.8 Gray Scale Decoder
+
+		there are total 180 Gamma Settings (Setting 0 to Setting 180)
+		available for the Gray Scale table.
+
+		The gray scale is defined in incremental way, with reference
+		to the length of previous table entry:
+			Setting of GS1 has to be >= 0
+			Setting of GS2 has to be > Setting of GS1 +1
+			Setting of GS3 has to be > Setting of GS2 +1
+			:
+			Setting of GS63 has to be > Setting of GS62 +1
+
+
+*/
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long tmp[GAMMA_NUM * GAMMA_LEN];
+	int i, acc = 0;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	for (i = 0; i < 63; i++) {
+		if (i > 0 && curves[i] < 2) {
+			dev_err(par->info->device,
+				"Illegal value in Grayscale Lookup Table at index %d. " \
+				"Must be greater than 1\n", i);
+			return -EINVAL;
+		}
+		acc += curves[i];
+		tmp[i] = acc;
+		if (acc > 180) {
+			dev_err(par->info->device,
+				"Illegal value(s) in Grayscale Lookup Table. " \
+				"At index=%d, the accumulated value has exceeded 180\n", i);
+			return -EINVAL;
+		}
+	}
+
+	write_reg(par, 0xB8,
+	tmp[0], tmp[1], tmp[2], tmp[3], tmp[4], tmp[5], tmp[6], tmp[7],
+	tmp[8], tmp[9], tmp[10], tmp[11], tmp[12], tmp[13], tmp[14], tmp[15],
+	tmp[16], tmp[17], tmp[18], tmp[19], tmp[20], tmp[21], tmp[22], tmp[23],
+	tmp[24], tmp[25], tmp[26], tmp[27], tmp[28], tmp[29], tmp[30], tmp[31],
+	tmp[32], tmp[33], tmp[34], tmp[35], tmp[36], tmp[37], tmp[38], tmp[39],
+	tmp[40], tmp[41], tmp[42], tmp[43], tmp[44], tmp[45], tmp[46], tmp[47],
+	tmp[48], tmp[49], tmp[50], tmp[51], tmp[52], tmp[53], tmp[54], tmp[55],
+	tmp[56], tmp[57], tmp[58], tmp[59], tmp[60], tmp[61], tmp[62]);
+
+	return 0;
+}
+
+static int blank(struct fbtft_par *par, bool on)
+{
+	fbtft_par_dbg(DEBUG_BLANK, par, "%s(blank=%s)\n",
+		__func__, on ? "true" : "false");
+	if (on)
+		write_reg(par, 0xAE);
+	else
+		write_reg(par, 0xAF);
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = GAMMA_NUM,
+	.gamma_len = GAMMA_LEN,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.write_register = write_reg8_bus8,
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_gamma = set_gamma,
+		.blank = blank,
+	},
+};
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1331", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1331");
+MODULE_ALIAS("platform:ssd1331");
+
+MODULE_DESCRIPTION("SSD1331 OLED Driver");
+MODULE_AUTHOR("Alec Smecher (adapted from SSD1351 by James Davies)");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_ssd1351.c b/drivers/staging/fbtft/fb_ssd1351.c
new file mode 100644
index 0000000..062d986
--- /dev/null
+++ b/drivers/staging/fbtft/fb_ssd1351.c
@@ -0,0 +1,258 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_ssd1351"
+#define WIDTH		128
+#define HEIGHT		128
+#define GAMMA_NUM	1
+#define GAMMA_LEN	63
+#define DEFAULT_GAMMA	"0 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2 2 " \
+			"2 2 2 2 2 2 2" \
+
+static void register_onboard_backlight(struct fbtft_par *par);
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->pdata
+		&& par->pdata->display.backlight == FBTFT_ONBOARD_BACKLIGHT) {
+		/* module uses onboard GPIO for panel power */
+		par->fbtftops.register_backlight = register_onboard_backlight;
+	}
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xfd, 0x12); /* Command Lock */
+	write_reg(par, 0xfd, 0xb1); /* Command Lock */
+	write_reg(par, 0xae); /* Display Off */
+	write_reg(par, 0xb3, 0xf1); /* Front Clock Div */
+	write_reg(par, 0xca, 0x7f); /* Set Mux Ratio */
+	write_reg(par, 0x15, 0x00, 0x7f); /* Set Column Address */
+	write_reg(par, 0x75, 0x00, 0x7f); /* Set Row Address */
+	write_reg(par, 0xa1, 0x00); /* Set Display Start Line */
+	write_reg(par, 0xa2, 0x00); /* Set Display Offset */
+	write_reg(par, 0xb5, 0x00); /* Set GPIO */
+	write_reg(par, 0xab, 0x01); /* Set Function Selection */
+	write_reg(par, 0xb1, 0x32); /* Set Phase Length */
+	write_reg(par, 0xb4, 0xa0, 0xb5, 0x55); /* Set Segment Low Voltage */
+	write_reg(par, 0xbb, 0x17); /* Set Precharge Voltage */
+	write_reg(par, 0xbe, 0x05); /* Set VComH Voltage */
+	write_reg(par, 0xc1, 0xc8, 0x80, 0xc8); /* Set Contrast */
+	write_reg(par, 0xc7, 0x0f); /* Set Master Contrast */
+	write_reg(par, 0xb6, 0x01); /* Set Second Precharge Period */
+	write_reg(par, 0xa6); /* Set Display Mode Reset */
+	write_reg(par, 0xaf); /* Set Sleep Mode Display On */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x15, xs, xe);
+	write_reg(par, 0x75, ys, ye);
+	write_reg(par, 0x5c);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	unsigned remap;
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (par->fbtftops.init_display != init_display) {
+		/* don't risk messing up register A0h */
+		fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+			"%s: skipping since custom init_display() is used\n",
+			__func__);
+		return 0;
+	}
+
+	remap = 0x60 | (par->bgr << 2); /* Set Colour Depth */
+
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0xA0, remap | 0b00 | 1<<4);
+		break;
+	case 270:
+		write_reg(par, 0xA0, remap | 0b11 | 1<<4);
+		break;
+	case 180:
+		write_reg(par, 0xA0, remap | 0b10);
+		break;
+	case 90:
+		write_reg(par, 0xA0, remap | 0b01);
+		break;
+	}
+
+	return 0;
+}
+
+/*
+	Grayscale Lookup Table
+	GS1 - GS63
+	The driver Gamma curve contains the relative values between the entries
+	in the Lookup table.
+
+	From datasheet:
+	8.8 Gray Scale Decoder
+
+		there are total 180 Gamma Settings (Setting 0 to Setting 180)
+		available for the Gray Scale table.
+
+		The gray scale is defined in incremental way, with reference
+		to the length of previous table entry:
+			Setting of GS1 has to be >= 0
+			Setting of GS2 has to be > Setting of GS1 +1
+			Setting of GS3 has to be > Setting of GS2 +1
+			:
+			Setting of GS63 has to be > Setting of GS62 +1
+
+
+*/
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	unsigned long tmp[GAMMA_NUM * GAMMA_LEN];
+	int i, acc = 0;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	for (i = 0; i < 63; i++) {
+		if (i > 0 && curves[i] < 2) {
+			dev_err(par->info->device,
+				"Illegal value in Grayscale Lookup Table at index %d. " \
+				"Must be greater than 1\n", i);
+			return -EINVAL;
+		}
+		acc += curves[i];
+		tmp[i] = acc;
+		if (acc > 180) {
+			dev_err(par->info->device,
+				"Illegal value(s) in Grayscale Lookup Table. " \
+				"At index=%d, the accumulated value has exceeded 180\n", i);
+			return -EINVAL;
+		}
+	}
+
+	write_reg(par, 0xB8,
+	tmp[0], tmp[1], tmp[2], tmp[3], tmp[4], tmp[5], tmp[6], tmp[7],
+	tmp[8], tmp[9], tmp[10], tmp[11], tmp[12], tmp[13], tmp[14], tmp[15],
+	tmp[16], tmp[17], tmp[18], tmp[19], tmp[20], tmp[21], tmp[22], tmp[23],
+	tmp[24], tmp[25], tmp[26], tmp[27], tmp[28], tmp[29], tmp[30], tmp[31],
+	tmp[32], tmp[33], tmp[34], tmp[35], tmp[36], tmp[37], tmp[38], tmp[39],
+	tmp[40], tmp[41], tmp[42], tmp[43], tmp[44], tmp[45], tmp[46], tmp[47],
+	tmp[48], tmp[49], tmp[50], tmp[51], tmp[52], tmp[53], tmp[54], tmp[55],
+	tmp[56], tmp[57], tmp[58], tmp[59], tmp[60], tmp[61], tmp[62]);
+
+	return 0;
+}
+
+static int blank(struct fbtft_par *par, bool on)
+{
+	fbtft_par_dbg(DEBUG_BLANK, par, "%s(blank=%s)\n",
+		__func__, on ? "true" : "false");
+	if (on)
+		write_reg(par, 0xAE);
+	else
+		write_reg(par, 0xAF);
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.gamma_num = GAMMA_NUM,
+	.gamma_len = GAMMA_LEN,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+		.blank = blank,
+	},
+};
+
+#ifdef CONFIG_FB_BACKLIGHT
+static int update_onboard_backlight(struct backlight_device *bd)
+{
+	struct fbtft_par *par = bl_get_data(bd);
+	bool on;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+		"%s: power=%d, fb_blank=%d\n",
+		__func__, bd->props.power, bd->props.fb_blank);
+
+	on = (bd->props.power == FB_BLANK_UNBLANK)
+		&& (bd->props.fb_blank == FB_BLANK_UNBLANK);
+	/* Onboard backlight connected to GPIO0 on SSD1351, GPIO1 unused */
+	write_reg(par, 0xB5, on ? 0x03 : 0x02);
+
+	return 0;
+}
+
+static void register_onboard_backlight(struct fbtft_par *par)
+{
+	struct backlight_device *bd;
+	struct backlight_properties bl_props = { 0, };
+	struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	bl_ops = devm_kzalloc(par->info->device, sizeof(struct backlight_ops),
+				GFP_KERNEL);
+	if (!bl_ops) {
+		dev_err(par->info->device,
+			"%s: could not allocate memory for backlight operations.\n",
+			__func__);
+		return;
+	}
+
+	bl_ops->update_status = update_onboard_backlight;
+	bl_props.type = BACKLIGHT_RAW;
+	bl_props.power = FB_BLANK_POWERDOWN;
+
+	bd = backlight_device_register(dev_driver_string(par->info->device),
+				par->info->device, par, bl_ops, &bl_props);
+	if (IS_ERR(bd)) {
+		dev_err(par->info->device,
+			"cannot register backlight device (%ld)\n",
+			PTR_ERR(bd));
+		return;
+	}
+	par->info->bl_dev = bd;
+
+	if (!par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
+}
+#else
+static void register_onboard_backlight(struct fbtft_par *par) { };
+#endif
+
+
+FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1351", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:ssd1351");
+MODULE_ALIAS("platform:ssd1351");
+
+MODULE_DESCRIPTION("SSD1351 OLED Driver");
+MODULE_AUTHOR("James Davies");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_st7735r.c b/drivers/staging/fbtft/fb_st7735r.c
new file mode 100644
index 0000000..b63aa38
--- /dev/null
+++ b/drivers/staging/fbtft/fb_st7735r.c
@@ -0,0 +1,195 @@
+/*
+ * FB driver for the ST7735R LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fb_st7735r"
+#define DEFAULT_GAMMA "0F 1A 0F 18 2F 28 20 22 1F 1B 23 37 00 07 02 10\n" \
+                      "0F 1B 0F 17 33 2C 29 2E 30 30 39 3F 00 07 03 10"
+
+
+static int default_init_sequence[] = {
+	/* SWRESET - Software reset */
+	-1, 0x01,                                
+	-2, 150,                               /* delay */
+
+	/* SLPOUT - Sleep out & booster on */
+	-1, 0x11,                          
+	-2, 500,                               /* delay */
+
+	/* FRMCTR1 - frame rate control: normal mode
+	     frame rate = fosc / (1 x 2 + 40) * (LINE + 2C + 2D) */
+	-1, 0xB1, 0x01, 0x2C, 0x2D, 
+
+	/* FRMCTR2 - frame rate control: idle mode
+	     frame rate = fosc / (1 x 2 + 40) * (LINE + 2C + 2D) */
+	-1, 0xB2, 0x01, 0x2C, 0x2D, 
+
+	/* FRMCTR3 - frame rate control - partial mode
+	     dot inversion mode, line inversion mode */
+	-1, 0xB3, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D,
+
+	/* INVCTR - display inversion control
+	     no inversion */
+	-1, 0xB4, 0x07,
+
+	/* PWCTR1 - Power Control
+	     -4.6V, AUTO mode */
+	-1, 0xC0, 0xA2, 0x02, 0x84,
+
+	/* PWCTR2 - Power Control
+	     VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD */
+	-1, 0xC1, 0xC5,
+
+	/* PWCTR3 - Power Control
+	     Opamp current small, Boost frequency */
+	-1, 0xC2, 0x0A, 0x00,
+
+	/* PWCTR4 - Power Control
+	     BCLK/2, Opamp current small & Medium low */
+	-1, 0xC3,0x8A,0x2A,
+
+	/* PWCTR5 - Power Control */
+	-1, 0xC4, 0x8A, 0xEE,
+
+	/* VMCTR1 - Power Control */
+	-1, 0xC5, 0x0E,
+
+	/* INVOFF - Display inversion off */
+	-1, 0x20,
+
+	/* COLMOD - Interface pixel format */
+	-1, 0x3A, 0x05,
+
+	/* DISPON - Display On */
+	-1, 0x29,
+	-2, 100,                               /* delay */
+
+	/* NORON - Partial off (Normal) */
+	-1, 0x13,
+	-2, 10,                               /* delay */
+
+	/* end marker */
+	-3                                  
+};
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+#define MY (1 << 7)
+#define MX (1 << 6)
+#define MV (1 << 5)
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* MADCTL - Memory data access control
+	     RGB/BGR:
+	     1. Mode selection pin SRGB
+	        RGB H/W pin for color filter setting: 0=RGB, 1=BGR
+	     2. MADCTL RGB bit
+	        RGB-BGR ORDER color filter panel: 0=RGB, 1=BGR */
+	switch (par->info->var.rotate) {
+	case 0:
+		write_reg(par, 0x36, MX | MY | (par->bgr << 3));
+		break;
+	case 270:
+		write_reg(par, 0x36, MY | MV | (par->bgr << 3));
+		break;
+	case 180:
+		write_reg(par, 0x36, (par->bgr << 3));
+		break;
+	case 90:
+		write_reg(par, 0x36, MX | MV | (par->bgr << 3));
+		break;
+	}
+
+	return 0;
+}
+
+/*
+  Gamma string format:
+    VRF0P VOS0P PK0P PK1P PK2P PK3P PK4P PK5P PK6P PK7P PK8P PK9P SELV0P SELV1P SELV62P SELV63P
+    VRF0N VOS0N PK0N PK1N PK2N PK3N PK4N PK5N PK6N PK7N PK8N PK9N SELV0N SELV1N SELV62N SELV63N
+*/
+#define CURVE(num, idx)  curves[num*par->gamma.num_values + idx]
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	int i,j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	for (i = 0; i < par->gamma.num_curves; i++)
+		for (j = 0; j < par->gamma.num_values; j++)
+			CURVE(i,j) &= 0b111111;
+
+	for (i = 0; i < par->gamma.num_curves; i++)
+		write_reg(par, 0xE0 + i,
+			CURVE(i, 0), CURVE(i, 1), CURVE(i, 2), CURVE(i, 3),
+			CURVE(i, 4), CURVE(i, 5), CURVE(i, 6), CURVE(i, 7),
+			CURVE(i, 8), CURVE(i, 9), CURVE(i, 10), CURVE(i, 11),
+			CURVE(i, 12), CURVE(i, 13), CURVE(i, 14), CURVE(i,15));
+
+	return 0;
+}
+#undef CURVE
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = 128,
+	.height = 160,
+	.init_sequence = default_init_sequence,
+	.gamma_num = 2,
+	.gamma_len = 16,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.set_gamma = set_gamma,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "sitronix,st7735r", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:st7735r");
+MODULE_ALIAS("platform:st7735r");
+
+MODULE_DESCRIPTION("FB driver for the ST7735R LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_tinylcd.c b/drivers/staging/fbtft/fb_tinylcd.c
new file mode 100644
index 0000000..ca98bfb
--- /dev/null
+++ b/drivers/staging/fbtft/fb_tinylcd.c
@@ -0,0 +1,124 @@
+/*
+ * Custom FB driver for tinylcd.com display
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_tinylcd"
+#define WIDTH		320
+#define HEIGHT		480
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	write_reg(par, 0xB0, 0x80);
+	write_reg(par, 0xC0, 0x0A, 0x0A);
+	write_reg(par, 0xC1, 0x45, 0x07);
+	write_reg(par, 0xC2, 0x33);
+	write_reg(par, 0xC5, 0x00, 0x42, 0x80);
+	write_reg(par, 0xB1, 0xD0, 0x11);
+	write_reg(par, 0xB4, 0x02);
+	write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+	write_reg(par, 0xB7, 0x07);
+	write_reg(par, 0x36, 0x58);
+	write_reg(par, 0xF0, 0x36, 0xA5, 0xD3);
+	write_reg(par, 0xE5, 0x80);
+	write_reg(par, 0xE5, 0x01);
+	write_reg(par, 0xB3, 0x00);
+	write_reg(par, 0xE5, 0x00);
+	write_reg(par, 0xF0, 0x36, 0xA5, 0x53);
+	write_reg(par, 0xE0, 0x00, 0x35, 0x33, 0x00, 0x00, 0x00,
+	                     0x00, 0x35, 0x33, 0x00, 0x00, 0x00);
+	write_reg(par, 0x3A, 0x55);
+	write_reg(par, 0x11);
+	udelay(250);
+	write_reg(par, 0x29);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address */
+	write_reg(par, 0x2A, xs >> 8, xs & 0xFF, xe >> 8, xe & 0xFF);
+
+	/* Row adress */
+	write_reg(par, 0x2B, ys >> 8, ys & 0xFF, ye >> 8, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	case 270:
+		write_reg(par, 0xB6, 0x00, 0x02, 0x3B);
+		write_reg(par, 0x36, 0x28);
+		break;
+	case 180:
+		write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+		write_reg(par, 0x36, 0x58);
+		break;
+	case 90:
+		write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+		write_reg(par, 0x36, 0x38);
+		break;
+	default:
+		write_reg(par, 0xB6, 0x00, 0x22, 0x3B);
+		write_reg(par, 0x36, 0x08);
+		break;
+	}
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "neosec,tinylcd", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:tinylcd");
+
+MODULE_DESCRIPTION("Custom FB driver for tinylcd.com display");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_tls8204.c b/drivers/staging/fbtft/fb_tls8204.c
new file mode 100644
index 0000000..8738c7a
--- /dev/null
+++ b/drivers/staging/fbtft/fb_tls8204.c
@@ -0,0 +1,176 @@
+/*
+ * FB driver for the TLS8204 LCD Controller
+ *
+ * The display is monochrome and the video memory is RGB565.
+ * Any pixel value except 0 turns the pixel on.
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ * Copyright (C) 2014 Michael Hope (adapted for the TLS8204)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_tls8204"
+#define WIDTH		84
+#define HEIGHT		48
+#define TXBUFLEN	WIDTH
+#define DEFAULT_GAMMA	"40" /* gamma is used to control contrast in this driver */
+
+static unsigned bs = 4;
+module_param(bs, uint, 0);
+MODULE_PARM_DESC(bs, "BS[2:0] Bias voltage level: 0-7 (default: 4)");
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* Enter extended command mode */
+	write_reg(par, 0x21); /* 5:1  1
+				 2:0  PD - Powerdown control: chip is active
+				 1:0  V  - Entry mode: horizontal addressing
+				 0:1  H  - Extended instruction set control: extended
+			      */
+
+	/* H=1 Bias system */
+	write_reg(par, 0x10 | (bs & 0x7)); /*
+				 4:1  1
+				 3:0  0
+				 2:x  BS2 - Bias System
+				 1:x  BS1
+				 0:x  BS0
+			      */
+
+	/* Set the address of the first display line. */
+	write_reg(par, 0x04 | (64 >> 6));
+	write_reg(par, 0x40 | (64 & 0x3F));
+
+	/* Enter H=0 standard command mode */
+	write_reg(par, 0x20);
+
+	/* H=0 Display control */
+	write_reg(par, 0x08 | 4); /*
+				 3:1  1
+				 2:1  D  - DE: 10=normal mode
+				 1:0  0
+				 0:0  E
+			      */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* H=0 Set X address of RAM */
+	write_reg(par, 0x80); /* 7:1  1
+				 6-0: X[6:0] - 0x00
+			      */
+
+	/* H=0 Set Y address of RAM */
+	write_reg(par, 0x40); /* 7:0  0
+				 6:1  1
+				 2-0: Y[2:0] - 0x0
+			      */
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (y = 0; y < HEIGHT/8; y++) {
+		u8 *buf = par->txbuf.buf;
+		/* The display is 102x68 but the LCD is 84x48.  Set
+		   the write pointer at the start of each row. */
+		gpio_set_value(par->gpio.dc, 0);
+		write_reg(par, 0x80 | 0);
+		write_reg(par, 0x40 | y);
+
+		for (x = 0; x < WIDTH; x++) {
+			u8 ch = 0;
+			for (i = 0; i < 8*WIDTH; i += WIDTH) {
+				ch >>= 1;
+				if (vmem16[(y*8*WIDTH)+i+x])
+					ch |= 0x80;
+			}
+			*buf++ = ch;
+		}
+		/* Write the row */
+		gpio_set_value(par->gpio.dc, 1);
+		ret = par->fbtftops.write(par, par->txbuf.buf, WIDTH);
+		if (ret < 0) {
+			dev_err(par->info->device,
+				"%s: write failed and returned: %d\n", __func__, ret);
+			break;
+		}
+	}
+
+	return ret;
+}
+
+static int set_gamma(struct fbtft_par *par, unsigned long *curves)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* apply mask */
+	curves[0] &= 0x7F;
+
+	write_reg(par, 0x21); /* turn on extended instruction set */
+	write_reg(par, 0x80 | curves[0]);
+	write_reg(par, 0x20); /* turn off extended instruction set */
+
+	return 0;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.txbuflen = TXBUFLEN,
+	.gamma_num = 1,
+	.gamma_len = 1,
+	.gamma = DEFAULT_GAMMA,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_vmem = write_vmem,
+		.set_gamma = set_gamma,
+	},
+	.backlight = 1,
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "teralane,tls8204", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:tls8204");
+
+MODULE_DESCRIPTION("FB driver for the TLS8204 LCD Controller");
+MODULE_AUTHOR("Michael Hope");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_uc1701.c b/drivers/staging/fbtft/fb_uc1701.c
new file mode 100644
index 0000000..d70ac52
--- /dev/null
+++ b/drivers/staging/fbtft/fb_uc1701.c
@@ -0,0 +1,210 @@
+/*
+ * FB driver for the UC1701 LCD Controller
+ *
+ * The display is monochrome and the video memory is RGB565.
+ * Any pixel value except 0 turns the pixel on.
+ *
+ * Copyright (C) 2014 Juergen Holzmann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	"fb_uc1701"
+#define WIDTH	  102
+#define HEIGHT	 64
+#define PAGES	  (HEIGHT/8)
+
+/* 1: Display on/off */
+#define LCD_DISPLAY_ENABLE    0xAE
+/* 2: display start line set */
+#define LCD_START_LINE	0x40
+/* 3: Page address set (lower 4 bits select one of the pages) */
+#define LCD_PAGE_ADDRESS      0xB0
+/* 4: column address */
+#define LCD_COL_ADDRESS       0x10
+/* 8: select orientation */
+#define LCD_BOTTOMVIEW	0xA0
+/* 9: inverted display */
+#define LCD_DISPLAY_INVERT    0xA6
+/* 10: show memory content or switch all pixels on */
+#define LCD_ALL_PIXEL	 0xA4
+/* 11: lcd bias set */
+#define LCD_BIAS	      0xA2
+/* 14: Reset Controller */
+#define LCD_RESET_CMD	 0xE2
+/* 15: output mode select (turns display upside-down) */
+#define LCD_SCAN_DIR	  0xC0
+/* 16: power control set */
+#define LCD_POWER_CONTROL     0x28
+/* 17: voltage regulator resistor ratio set */
+#define LCD_VOLTAGE	   0x20
+/* 18: Volume mode set */
+#define LCD_VOLUME_MODE       0x81
+/* 22: NOP command */
+#define LCD_NO_OP	     0xE3
+/* 25: advanced program control */
+#define LCD_ADV_PROG_CTRL     0xFA
+/* 25: advanced program control2 */
+#define LCD_ADV_PROG_CTRL2    0x10
+#define LCD_TEMPCOMP_HIGH     0x80
+/* column offset for normal orientation */
+#define SHIFT_ADDR_NORMAL     0
+/* column offset for bottom view orientation */
+#define SHIFT_ADDR_TOPVIEW    30
+
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	/* softreset of LCD */
+	write_reg(par, LCD_RESET_CMD);
+	mdelay(10);
+
+	/* set startpoint */
+	/* LCD_START_LINE | (pos & 0x3F) */
+	write_reg(par, LCD_START_LINE);
+
+	/* select orientation BOTTOMVIEW */
+	write_reg(par, LCD_BOTTOMVIEW | 1);
+	/* output mode select (turns display upside-down) */
+	write_reg(par, LCD_SCAN_DIR | 0x00);
+
+	/* Normal Pixel mode */
+	write_reg(par, LCD_ALL_PIXEL | 0);
+
+	/* positive display */
+	write_reg(par, LCD_DISPLAY_INVERT | 0);
+
+	/* bias 1/9 */
+	write_reg(par, LCD_BIAS | 0);
+
+	/* power control mode: all features on */
+	/* LCD_POWER_CONTROL | (val&0x07) */
+	write_reg(par, LCD_POWER_CONTROL | 0x07);
+
+	/* set voltage regulator R/R */
+	/* LCD_VOLTAGE | (val&0x07) */
+	write_reg(par, LCD_VOLTAGE | 0x07);
+
+	/* volume mode set */
+	/* LCD_VOLUME_MODE,val&0x3f,LCD_NO_OP */
+	write_reg(par, LCD_VOLUME_MODE);
+	/* LCD_VOLUME_MODE,val&0x3f,LCD_NO_OP */
+	write_reg(par, 0x09);
+	/* ???? */
+	/* LCD_VOLUME_MODE,val&0x3f,LCD_NO_OP */
+	write_reg(par, LCD_NO_OP);
+
+	/* advanced program control */
+	write_reg(par, LCD_ADV_PROG_CTRL);
+	write_reg(par, LCD_ADV_PROG_CTRL2|LCD_TEMPCOMP_HIGH);
+
+	/* enable display */
+	write_reg(par, LCD_DISPLAY_ENABLE | 1);
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* goto address */
+	/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+	 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+	 LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+	write_reg(par, LCD_PAGE_ADDRESS);
+	/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+	 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+	  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+	write_reg(par, 0x00);
+	/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+	 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+	  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+	write_reg(par, LCD_COL_ADDRESS);
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16 = (u16 *)par->info->screen_base;
+	u8 *buf = par->txbuf.buf;
+	int x, y, i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	for (y = 0; y < PAGES; y++) {
+		buf = par->txbuf.buf;
+		for (x = 0; x < WIDTH; x++) {
+			*buf = 0x00;
+			for (i = 0; i < 8; i++)
+				*buf |= (vmem16[((y*8*WIDTH)+(i*WIDTH))+x] ? 1 : 0) << i;
+			buf++;
+		}
+		/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+		 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+		  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+		write_reg(par, LCD_PAGE_ADDRESS|(u8)y);
+		/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+		 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+		  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+		write_reg(par, 0x00);
+		/* LCD_PAGE_ADDRESS | ((page) & 0x1F),
+		 (((col)+SHIFT_ADDR_NORMAL) & 0x0F),
+		  LCD_COL_ADDRESS | ((((col)+SHIFT_ADDR_NORMAL)>>4) & 0x0F) */
+		write_reg(par, LCD_COL_ADDRESS);
+		gpio_set_value(par->gpio.dc, 1);
+		ret = par->fbtftops.write(par, par->txbuf.buf, WIDTH);
+		gpio_set_value(par->gpio.dc, 0);
+	}
+
+	if (ret < 0)
+		dev_err(par->info->device, "%s: write failed and returned: %d\n", __func__, ret);
+
+	return ret;
+}
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.write_vmem = write_vmem,
+	},
+	.backlight = 1,
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "UltraChip,uc1701", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("spi:uc1701");
+
+MODULE_DESCRIPTION("FB driver for the UC1701 LCD Controller");
+MODULE_AUTHOR("Juergen Holzmann");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_upd161704.c b/drivers/staging/fbtft/fb_upd161704.c
new file mode 100644
index 0000000..fff57b3
--- /dev/null
+++ b/drivers/staging/fbtft/fb_upd161704.c
@@ -0,0 +1,206 @@
+/*
+ * FB driver for the uPD161704 LCD Controller
+ *
+ * Copyright (C) 2014 Seong-Woo Kim
+ *
+ * Based on fb_ili9325.c by Noralf Tronnes
+ * Based on ili9325.c by Jeroen Domburg
+ * Init code from UTFT library by Henning Karlsen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME		"fb_upd161704"
+#define WIDTH		240
+#define HEIGHT		320
+#define BPP		16
+
+static int init_display(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	par->fbtftops.reset(par);
+
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	/* Initialization sequence from Lib_UTFT */
+
+	/* register reset */
+	write_reg(par, 0x0003,0x0001);	/* Soft reset */
+
+	/* oscillator start */
+	write_reg(par, 0x003A,0x0001);	/*Oscillator 0: stop, 1: operation */
+	udelay(100);
+
+	/* y-setting */
+	write_reg(par, 0x0024,0x007B);	/* amplitude setting */
+	udelay(10);
+	write_reg(par, 0x0025,0x003B);	/* amplitude setting */
+	write_reg(par, 0x0026,0x0034);	/* amplitude setting */
+	udelay(10);
+	write_reg(par, 0x0027,0x0004);	/* amplitude setting */
+	write_reg(par, 0x0052,0x0025);	/* circuit setting 1 */
+	udelay(10);
+	write_reg(par, 0x0053,0x0033);	/* circuit setting 2 */
+	write_reg(par, 0x0061,0x001C);	/* adjustment V10 positive polarity */
+	udelay(10);
+	write_reg(par, 0x0062,0x002C);	/* adjustment V9 negative polarity */
+	write_reg(par, 0x0063,0x0022);	/* adjustment V34 positive polarity */
+	udelay(10);
+	write_reg(par, 0x0064,0x0027);	/* adjustment V31 negative polarity */
+	udelay(10);
+	write_reg(par, 0x0065,0x0014);	/* adjustment V61 negative polarity */
+	udelay(10);
+	write_reg(par, 0x0066,0x0010);	/* adjustment V61 negative polarity */
+	
+	/* Basical clock for 1 line (BASECOUNT[7:0]) number specified */
+	write_reg(par, 0x002E,0x002D);
+	
+	/* Power supply setting */
+	write_reg(par, 0x0019,0x0000);	/* DC/DC output setting */
+	udelay(200);
+	write_reg(par, 0x001A,0x1000);	/* DC/DC frequency setting */
+	write_reg(par, 0x001B,0x0023);	/* DC/DC rising setting */
+	write_reg(par, 0x001C,0x0C01);	/* Regulator voltage setting */
+	write_reg(par, 0x001D,0x0000);	/* Regulator current setting */
+	write_reg(par, 0x001E,0x0009);	/* VCOM output setting */
+	write_reg(par, 0x001F,0x0035);	/* VCOM amplitude setting */
+	write_reg(par, 0x0020,0x0015);	/* VCOMM cencter setting */
+	write_reg(par, 0x0018,0x1E7B);	/* DC/DC operation setting */
+
+	/* windows setting */
+	write_reg(par, 0x0008,0x0000);	/* Minimum X address */
+	write_reg(par, 0x0009,0x00EF);	/* Maximum X address */
+	write_reg(par, 0x000a,0x0000);	/* Minimum Y address */
+	write_reg(par, 0x000b,0x013F);	/* Maximum Y address */
+
+	/* LCD display area setting */
+	write_reg(par, 0x0029,0x0000);	/* [LCDSIZE]  X MIN. size set */
+	write_reg(par, 0x002A,0x0000);	/* [LCDSIZE]  Y MIN. size set */
+	write_reg(par, 0x002B,0x00EF);	/* [LCDSIZE]  X MAX. size set */
+	write_reg(par, 0x002C,0x013F);	/* [LCDSIZE]  Y MAX. size set */
+
+	/* Gate scan setting */
+	write_reg(par, 0x0032,0x0002);
+	
+	/* n line inversion line number */
+	write_reg(par, 0x0033,0x0000);
+
+	/* Line inversion/frame inversion/interlace setting */
+	write_reg(par, 0x0037,0x0000);
+	
+	/* Gate scan operation setting register */
+	write_reg(par, 0x003B,0x0001);
+	
+	/* Color mode */
+	/*GS = 0: 260-k color (64 gray scale), GS = 1: 8 color (2 gray scale) */
+	write_reg(par, 0x0004,0x0000);
+
+	/* RAM control register */
+	write_reg(par, 0x0005,0x0000);	/*Window access 00:Normal, 10:Window */
+
+	/* Display setting register 2 */
+	write_reg(par, 0x0001,0x0000);
+
+	/* display setting */
+	write_reg(par, 0x0000,0x0000);	/* display on */
+
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0006, xs);
+		write_reg(par, 0x0007, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0006, WIDTH - 1 - xs);
+		write_reg(par, 0x0007, HEIGHT - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0006, WIDTH - 1 - ys);
+		write_reg(par, 0x0007, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0006, ys);
+		write_reg(par, 0x0007, HEIGHT - 1 - xs);
+		break;
+	}
+
+	write_reg(par, 0x0e); /* Write Data to GRAM */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	switch (par->info->var.rotate) {
+	/* AM: GRAM update direction */
+	case 0:
+		write_reg(par, 0x01, 0x0000);
+		write_reg(par, 0x05, 0x0000);
+		break;
+	case 180:
+		write_reg(par, 0x01, 0x00C0);
+		write_reg(par, 0x05, 0x0000);
+		break;
+	case 270:
+		write_reg(par, 0x01, 0x0080);
+		write_reg(par, 0x05, 0x0001);
+		break;
+	case 90:
+		write_reg(par, 0x01, 0x0040);
+		write_reg(par, 0x05, 0x0001);
+		break;
+	}
+
+	return 0;
+}
+
+static struct fbtft_display display = {
+	.regwidth = 16,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fbtftops = {
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "nec,upd161704", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+MODULE_ALIAS("platform:" DRVNAME);
+MODULE_ALIAS("spi:upd161704");
+MODULE_ALIAS("platform:upd161704");
+
+MODULE_DESCRIPTION("FB driver for the uPD161704 LCD Controller");
+MODULE_AUTHOR("Seong-Woo Kim");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fb_watterott.c b/drivers/staging/fbtft/fb_watterott.c
new file mode 100644
index 0000000..975b579
--- /dev/null
+++ b/drivers/staging/fbtft/fb_watterott.c
@@ -0,0 +1,324 @@
+/*
+ * FB driver for the Watterott LCD Controller
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME			"fb_watterott"
+#define WIDTH			320
+#define HEIGHT			240
+#define FPS			5
+#define TXBUFLEN		1024
+#define DEFAULT_BRIGHTNESS	50
+
+#define CMD_VERSION		0x01
+#define CMD_LCD_LED		0x10
+#define CMD_LCD_RESET		0x11
+#define CMD_LCD_ORIENTATION	0x20
+#define CMD_LCD_DRAWIMAGE	0x27
+#define COLOR_RGB323		8
+#define COLOR_RGB332		9
+#define COLOR_RGB233		10
+#define COLOR_RGB565		16
+
+
+static short mode = 565;
+module_param(mode, short, 0);
+MODULE_PARM_DESC(mode, "RGB color transfer mode: 332, 565 (default)");
+
+static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	u8 *buf = par->buf;
+
+	va_start(args, len);
+	for (i = 0; i < len; i++)
+		*buf++ = (u8)va_arg(args, unsigned int);
+	va_end(args);
+
+	fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
+		par->info->device, u8, par->buf, len, "%s: ", __func__);
+
+	ret = par->fbtftops.write(par, par->buf, len);
+	if (ret < 0) {
+		dev_err(par->info->device,
+			"%s: write() failed and returned %d\n", __func__, ret);
+		return;
+	}
+}
+
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	unsigned start_line, end_line;
+	u16 *vmem16 = (u16 *)(par->info->screen_base + offset);
+	u16 *pos = par->txbuf.buf + 1;
+	u16 *buf16 = par->txbuf.buf + 10;
+	int i, j;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	start_line = offset / par->info->fix.line_length;
+	end_line = start_line + (len / par->info->fix.line_length) - 1;
+
+	/* Set command header. pos: x, y, w, h */
+	((u8 *)par->txbuf.buf)[0] = CMD_LCD_DRAWIMAGE;
+	pos[0] = 0;
+	pos[2] = cpu_to_be16(par->info->var.xres);
+	pos[3] = cpu_to_be16(1);
+	((u8 *)par->txbuf.buf)[9] = COLOR_RGB565;
+
+	for (i = start_line; i <= end_line; i++) {
+		pos[1] = cpu_to_be16(i);
+		for (j = 0; j < par->info->var.xres; j++)
+			buf16[j] = cpu_to_be16(*vmem16++);
+		ret = par->fbtftops.write(par,
+			par->txbuf.buf, 10 + par->info->fix.line_length);
+		if (ret < 0)
+			return ret;
+		udelay(300);
+	}
+
+	return 0;
+}
+
+#define RGB565toRGB323(c) (((c&0xE000)>>8) | ((c&0600)>>6) | ((c&0x001C)>>2))
+#define RGB565toRGB332(c) (((c&0xE000)>>8) | ((c&0700)>>6) | ((c&0x0018)>>3))
+#define RGB565toRGB233(c) (((c&0xC000)>>8) | ((c&0700)>>5) | ((c&0x001C)>>2))
+
+static int write_vmem_8bit(struct fbtft_par *par, size_t offset, size_t len)
+{
+	unsigned start_line, end_line;
+	u16 *vmem16 = (u16 *)(par->info->screen_base + offset);
+	u16 *pos = par->txbuf.buf + 1;
+	u8 *buf8 = par->txbuf.buf + 10;
+	int i, j;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s()\n", __func__);
+
+	start_line = offset / par->info->fix.line_length;
+	end_line = start_line + (len / par->info->fix.line_length) - 1;
+
+	/* Set command header. pos: x, y, w, h */
+	((u8 *)par->txbuf.buf)[0] = CMD_LCD_DRAWIMAGE;
+	pos[0] = 0;
+	pos[2] = cpu_to_be16(par->info->var.xres);
+	pos[3] = cpu_to_be16(1);
+	((u8 *)par->txbuf.buf)[9] = COLOR_RGB332;
+
+	for (i = start_line; i <= end_line; i++) {
+		pos[1] = cpu_to_be16(i);
+		for (j = 0; j < par->info->var.xres; j++) {
+			buf8[j] = RGB565toRGB332(*vmem16);
+			vmem16++;
+		}
+		ret = par->fbtftops.write(par,
+			par->txbuf.buf, 10 + par->info->var.xres);
+		if (ret < 0)
+			return ret;
+		udelay(700);
+	}
+
+	return 0;
+}
+
+static unsigned firmware_version(struct fbtft_par *par)
+{
+	u8 rxbuf[4] = {0, };
+
+	write_reg(par, CMD_VERSION);
+	par->fbtftops.read(par, rxbuf, 4);
+	if (rxbuf[1] != '.')
+		return 0;
+
+	return (rxbuf[0] - '0') << 8 | (rxbuf[2] - '0') << 4 | (rxbuf[3] - '0');
+}
+
+static int init_display(struct fbtft_par *par)
+{
+	int ret;
+	unsigned version;
+	u8 save_mode;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* enable SPI interface by having CS and MOSI low during reset */
+	save_mode = par->spi->mode;
+	par->spi->mode |= SPI_CS_HIGH;
+	ret = par->spi->master->setup(par->spi); /* set CS inactive low */
+	if (ret) {
+		dev_err(par->info->device, "Could not set SPI_CS_HIGH\n");
+		return ret;
+	}
+	write_reg(par, 0x00); /* make sure mode is set */
+
+	mdelay(50);
+	par->fbtftops.reset(par);
+	mdelay(1000);
+	par->spi->mode = save_mode;
+	ret = par->spi->master->setup(par->spi);
+	if (ret) {
+		dev_err(par->info->device, "Could not restore SPI mode\n");
+		return ret;
+	}
+	write_reg(par, 0x00);
+
+	version = firmware_version(par);
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "Firmware version: %x.%02x\n",
+						version >> 8, version & 0xFF);
+
+	if (mode == 332)
+		par->fbtftops.write_vmem = write_vmem_8bit;
+	return 0;
+}
+
+static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	/* not used on this controller */
+}
+
+static int set_var(struct fbtft_par *par)
+{
+	u8 rotate;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* this controller rotates clock wise */
+	switch (par->info->var.rotate) {
+	case 90:
+		rotate = 27;
+		break;
+	case 180:
+		rotate = 18;
+		break;
+	case 270:
+		rotate = 9;
+		break;
+	default:
+		rotate = 0;
+	}
+	write_reg(par, CMD_LCD_ORIENTATION, rotate);
+
+	return 0;
+}
+
+static int verify_gpios(struct fbtft_par *par)
+{
+	if (par->gpio.reset < 0) {
+		dev_err(par->info->device, "Missing 'reset' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+#ifdef CONFIG_FB_BACKLIGHT
+static int backlight_chip_update_status(struct backlight_device *bd)
+{
+	struct fbtft_par *par = bl_get_data(bd);
+	int brightness = bd->props.brightness;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+		"%s: brightness=%d, power=%d, fb_blank=%d\n",
+		__func__, bd->props.brightness, bd->props.power,
+		bd->props.fb_blank);
+
+	if (bd->props.power != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	write_reg(par, CMD_LCD_LED, brightness);
+
+	return 0;
+}
+
+static void register_chip_backlight(struct fbtft_par *par)
+{
+	struct backlight_device *bd;
+	struct backlight_properties bl_props = { 0, };
+	struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	bl_ops = devm_kzalloc(par->info->device, sizeof(struct backlight_ops),
+				GFP_KERNEL);
+	if (!bl_ops) {
+		dev_err(par->info->device,
+			"%s: could not allocate memory for backlight operations.\n",
+			__func__);
+		return;
+	}
+
+	bl_ops->update_status = backlight_chip_update_status;
+	bl_props.type = BACKLIGHT_RAW;
+	bl_props.power = FB_BLANK_POWERDOWN;
+	bl_props.max_brightness = 100;
+	bl_props.brightness = DEFAULT_BRIGHTNESS;
+
+	bd = backlight_device_register(dev_driver_string(par->info->device),
+				par->info->device, par, bl_ops, &bl_props);
+	if (IS_ERR(bd)) {
+		dev_err(par->info->device,
+			"cannot register backlight device (%ld)\n",
+			PTR_ERR(bd));
+		return;
+	}
+	par->info->bl_dev = bd;
+
+	if (!par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
+}
+#else
+#define register_chip_backlight NULL
+#endif
+
+
+static struct fbtft_display display = {
+	.regwidth = 8,
+	.buswidth = 8,
+	.width = WIDTH,
+	.height = HEIGHT,
+	.fps = FPS,
+	.txbuflen = TXBUFLEN,
+	.fbtftops = {
+		.write_register = write_reg8_bus8,
+		.write_vmem = write_vmem,
+		.init_display = init_display,
+		.set_addr_win = set_addr_win,
+		.set_var = set_var,
+		.verify_gpios = verify_gpios,
+		.register_backlight = register_chip_backlight,
+	},
+};
+FBTFT_REGISTER_DRIVER(DRVNAME, "watterott,openlcd", &display);
+
+MODULE_ALIAS("spi:" DRVNAME);
+
+MODULE_DESCRIPTION("FB driver for the Watterott LCD Controller");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fbtft-bus.c b/drivers/staging/fbtft/fbtft-bus.c
new file mode 100644
index 0000000..b3cddb0
--- /dev/null
+++ b/drivers/staging/fbtft/fbtft-bus.c
@@ -0,0 +1,256 @@
+#include <linux/export.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include "fbtft.h"
+
+
+
+
+/*****************************************************************************
+ *
+ *   void (*write_reg)(struct fbtft_par *par, int len, ...);
+ *
+ *****************************************************************************/
+
+#define define_fbtft_write_reg(func, type, modifier)                          \
+void func(struct fbtft_par *par, int len, ...)                                \
+{                                                                             \
+	va_list args;                                                         \
+	int i, ret;                                                           \
+	int offset = 0;                                                       \
+	type *buf = (type *)par->buf;                                         \
+									      \
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {                    \
+		va_start(args, len);                                          \
+		for (i = 0; i < len; i++) {                                   \
+			buf[i] = (type)va_arg(args, unsigned int);            \
+		}                                                             \
+		va_end(args);                                                 \
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par, par->info->device, type, buf, len, "%s: ", __func__);   \
+	}                                                                     \
+									      \
+	va_start(args, len);                                                  \
+									      \
+	if (par->startbyte) {                                                 \
+		*(u8 *)par->buf = par->startbyte;                             \
+		buf = (type *)(par->buf + 1);                                 \
+		offset = 1;                                                   \
+	}                                                                     \
+									      \
+	*buf = modifier((type)va_arg(args, unsigned int));                    \
+	if (par->gpio.dc != -1)                                               \
+		gpio_set_value(par->gpio.dc, 0);                              \
+	ret = par->fbtftops.write(par, par->buf, sizeof(type)+offset);        \
+	if (ret < 0) {                                                        \
+		va_end(args);                                                 \
+		dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret); \
+		return;                                                       \
+	}                                                                     \
+	len--;                                                                \
+									      \
+	if (par->startbyte)                                                   \
+		*(u8 *)par->buf = par->startbyte | 0x2;                       \
+									      \
+	if (len) {                                                            \
+		i = len;                                                      \
+		while (i--) {                                                 \
+			*buf++ = modifier((type)va_arg(args, unsigned int));  \
+		}                                                             \
+		if (par->gpio.dc != -1)                                       \
+			gpio_set_value(par->gpio.dc, 1);                      \
+		ret = par->fbtftops.write(par, par->buf, len * (sizeof(type)+offset)); \
+		if (ret < 0) {                                                \
+			va_end(args);                                         \
+			dev_err(par->info->device, "%s: write() failed and returned %d\n", __func__, ret); \
+			return;                                               \
+		}                                                             \
+	}                                                                     \
+	va_end(args);                                                         \
+}                                                                             \
+EXPORT_SYMBOL(func);
+
+define_fbtft_write_reg(fbtft_write_reg8_bus8, u8, )
+define_fbtft_write_reg(fbtft_write_reg16_bus8, u16, cpu_to_be16)
+define_fbtft_write_reg(fbtft_write_reg16_bus16, u16, )
+
+void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...)
+{
+	va_list args;
+	int i, ret;
+	int pad = 0;
+	u16 *buf = (u16 *)par->buf;
+
+	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
+		va_start(args, len);
+		for (i = 0; i < len; i++)
+			*(((u8 *)buf) + i) = (u8)va_arg(args, unsigned int);
+		va_end(args);
+		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
+			par->info->device, u8, buf, len, "%s: ", __func__);
+	}
+	if (len <= 0)
+		return;
+
+	if (par->spi && (par->spi->bits_per_word == 8)) {
+		/* we're emulating 9-bit, pad start of buffer with no-ops
+		   (assuming here that zero is a no-op) */
+		pad = (len % 4) ? 4 - (len % 4) : 0;
+		for (i = 0; i < pad; i++)
+			*buf++ = 0x000;
+	}
+
+	va_start(args, len);
+	*buf++ = (u8)va_arg(args, unsigned int);
+	i = len - 1;
+	while (i--) {
+		*buf = (u8)va_arg(args, unsigned int);
+		*buf++ |= 0x100; /* dc=1 */
+	}
+	va_end(args);
+	ret = par->fbtftops.write(par, par->buf, (len + pad) * sizeof(u16));
+	if (ret < 0) {
+		dev_err(par->info->device,
+			"%s: write() failed and returned %d\n", __func__, ret);
+		return;
+	}
+}
+EXPORT_SYMBOL(fbtft_write_reg8_bus9);
+
+
+
+
+/*****************************************************************************
+ *
+ *   int (*write_vmem)(struct fbtft_par *par);
+ *
+ *****************************************************************************/
+
+/* 16 bit pixel over 8-bit databus */
+int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16;
+	u16 *txbuf16 = (u16 *)par->txbuf.buf;
+	size_t remain;
+	size_t to_copy;
+	size_t tx_array_size;
+	int i;
+	int ret = 0;
+	size_t startbyte_size = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	remain = len / 2;
+	vmem16 = (u16 *)(par->info->screen_base + offset);
+
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 1);
+
+	/* non buffered write */
+	if (!par->txbuf.buf)
+		return par->fbtftops.write(par, vmem16, len);
+
+	/* buffered write */
+	tx_array_size = par->txbuf.len / 2;
+
+	if (par->startbyte) {
+		txbuf16 = (u16 *)(par->txbuf.buf + 1);
+		tx_array_size -= 2;
+		*(u8 *)(par->txbuf.buf) = par->startbyte | 0x2;
+		startbyte_size = 1;
+	}
+
+	while (remain) {
+		to_copy = remain > tx_array_size ? tx_array_size : remain;
+		dev_dbg(par->info->device, "    to_copy=%zu, remain=%zu\n",
+						to_copy, remain - to_copy);
+
+		for (i = 0; i < to_copy; i++)
+			txbuf16[i] = cpu_to_be16(vmem16[i]);
+
+		vmem16 = vmem16 + to_copy;
+		ret = par->fbtftops.write(par, par->txbuf.buf,
+						startbyte_size + to_copy * 2);
+		if (ret < 0)
+			return ret;
+		remain -= to_copy;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_write_vmem16_bus8);
+
+/* 16 bit pixel over 9-bit SPI bus: dc + high byte, dc + low byte */
+int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u8 *vmem8;
+	u16 *txbuf16 = par->txbuf.buf;
+	size_t remain;
+	size_t to_copy;
+	size_t tx_array_size;
+	int i;
+	int ret = 0;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	if (!par->txbuf.buf) {
+		dev_err(par->info->device, "%s: txbuf.buf is NULL\n", __func__);
+		return -1;
+	}
+
+	remain = len;
+	vmem8 = par->info->screen_base + offset;
+
+	tx_array_size = par->txbuf.len / 2;
+
+	while (remain) {
+		to_copy = remain > tx_array_size ? tx_array_size : remain;
+		dev_dbg(par->info->device, "    to_copy=%zu, remain=%zu\n",
+						to_copy, remain - to_copy);
+
+#ifdef __LITTLE_ENDIAN
+		for (i = 0; i < to_copy; i += 2) {
+			txbuf16[i]   = 0x0100 | vmem8[i+1];
+			txbuf16[i+1] = 0x0100 | vmem8[i];
+		}
+#else
+		for (i = 0; i < to_copy; i++)
+			txbuf16[i]   = 0x0100 | vmem8[i];
+#endif
+		vmem8 = vmem8 + to_copy;
+		ret = par->fbtftops.write(par, par->txbuf.buf, to_copy*2);
+		if (ret < 0)
+			return ret;
+		remain -= to_copy;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_write_vmem16_bus9);
+
+int fbtft_write_vmem8_bus8(struct fbtft_par *par, size_t offset, size_t len)
+{
+	dev_err(par->info->device, "%s: function not implemented\n", __func__);
+	return -1;
+}
+EXPORT_SYMBOL(fbtft_write_vmem8_bus8);
+
+/* 16 bit pixel over 16-bit databus */
+int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len)
+{
+	u16 *vmem16;
+
+	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
+		__func__, offset, len);
+
+	vmem16 = (u16 *)(par->info->screen_base + offset);
+
+	if (par->gpio.dc != -1)
+		gpio_set_value(par->gpio.dc, 1);
+
+	/* no need for buffered write with 16-bit bus */
+	return par->fbtftops.write(par, vmem16, len);
+}
+EXPORT_SYMBOL(fbtft_write_vmem16_bus16);
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
new file mode 100644
index 0000000..873e2c7
--- /dev/null
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -0,0 +1,1516 @@
+/*
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This driver is inspired by:
+ *   st7735fb.c, Copyright (C) 2011, Matt Porter
+ *   broadsheetfb.c, Copyright (C) 2008, Jaya Kumar
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+#include <linux/uaccess.h>
+#include <linux/backlight.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+
+#include "fbtft.h"
+
+extern void fbtft_sysfs_init(struct fbtft_par *par);
+extern void fbtft_sysfs_exit(struct fbtft_par *par);
+extern void fbtft_expand_debug_value(unsigned long *debug);
+extern int fbtft_gamma_parse_str(struct fbtft_par *par, unsigned long *curves,
+						const char *str, int size);
+
+static unsigned long debug;
+module_param(debug, ulong , 0);
+MODULE_PARM_DESC(debug, "override device debug level");
+
+static bool dma = true;
+module_param(dma, bool, 0);
+MODULE_PARM_DESC(dma, "Use DMA buffer");
+
+
+void fbtft_dbg_hex(const struct device *dev, int groupsize,
+			void *buf, size_t len, const char *fmt, ...)
+{
+	va_list args;
+	static char textbuf[512];
+	char *text = textbuf;
+	size_t text_len;
+
+	va_start(args, fmt);
+	text_len = vscnprintf(text, sizeof(textbuf), fmt, args);
+	va_end(args);
+
+	hex_dump_to_buffer(buf, len, 32, groupsize, text + text_len,
+				512 - text_len, false);
+
+	if (len > 32)
+		dev_info(dev, "%s ...\n", text);
+	else
+		dev_info(dev, "%s\n", text);
+}
+EXPORT_SYMBOL(fbtft_dbg_hex);
+
+unsigned long fbtft_request_gpios_match(struct fbtft_par *par,
+					const struct fbtft_gpio *gpio)
+{
+	int ret;
+	long val;
+
+	fbtft_par_dbg(DEBUG_REQUEST_GPIOS_MATCH, par, "%s('%s')\n",
+		__func__, gpio->name);
+
+	if (strcasecmp(gpio->name, "reset") == 0) {
+		par->gpio.reset = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "dc") == 0) {
+		par->gpio.dc = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (strcasecmp(gpio->name, "cs") == 0) {
+		par->gpio.cs = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "wr") == 0) {
+		par->gpio.wr = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "rd") == 0) {
+		par->gpio.rd = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	} else if (strcasecmp(gpio->name, "latch") == 0) {
+		par->gpio.latch = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (gpio->name[0] == 'd' && gpio->name[1] == 'b') {
+		ret = kstrtol(&gpio->name[2], 10, &val);
+		if (ret == 0 && val < 16) {
+			par->gpio.db[val] = gpio->gpio;
+			return GPIOF_OUT_INIT_LOW;
+		}
+	} else if (strcasecmp(gpio->name, "led") == 0) {
+		par->gpio.led[0] = gpio->gpio;
+		return GPIOF_OUT_INIT_LOW;
+	} else if (strcasecmp(gpio->name, "led_") == 0) {
+		par->gpio.led[0] = gpio->gpio;
+		return GPIOF_OUT_INIT_HIGH;
+	}
+
+	return FBTFT_GPIO_NO_MATCH;
+}
+
+int fbtft_request_gpios(struct fbtft_par *par)
+{
+	struct fbtft_platform_data *pdata = par->pdata;
+	const struct fbtft_gpio *gpio;
+	unsigned long flags;
+	int ret;
+
+	if (pdata && pdata->gpios) {
+		gpio = pdata->gpios;
+		while (gpio->name[0]) {
+			flags = FBTFT_GPIO_NO_MATCH;
+			/* if driver provides match function, try it first,
+			   if no match use our own */
+			if (par->fbtftops.request_gpios_match)
+				flags = par->fbtftops.request_gpios_match(par, gpio);
+			if (flags == FBTFT_GPIO_NO_MATCH)
+				flags = fbtft_request_gpios_match(par, gpio);
+			if (flags != FBTFT_GPIO_NO_MATCH) {
+				ret = devm_gpio_request_one(par->info->device,
+						gpio->gpio, flags,
+						par->info->device->driver->name);
+				if (ret < 0) {
+					dev_err(par->info->device,
+						"%s: gpio_request_one('%s'=%d) failed with %d\n",
+						__func__, gpio->name,
+						gpio->gpio, ret);
+					return ret;
+				}
+				fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par,
+					"%s: '%s' = GPIO%d\n",
+					__func__, gpio->name, gpio->gpio);
+			}
+			gpio++;
+		}
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static int fbtft_request_one_gpio(struct fbtft_par *par,
+				  const char *name, int index, int *gpiop)
+{
+	struct device *dev = par->info->device;
+	struct device_node *node = dev->of_node;
+	int gpio, flags, ret = 0;
+	enum of_gpio_flags of_flags;
+
+	if (of_find_property(node, name, NULL)) {
+		gpio = of_get_named_gpio_flags(node, name, index, &of_flags);
+		if (gpio == -ENOENT)
+			return 0;
+		if (gpio == -EPROBE_DEFER)
+			return gpio;
+		if (gpio < 0) {
+			dev_err(dev,
+				"failed to get '%s' from DT\n", name);
+			return gpio;
+		}
+
+		/* active low translates to initially low */
+		flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
+							GPIOF_OUT_INIT_HIGH;
+		ret = devm_gpio_request_one(dev, gpio, flags,
+						dev->driver->name);
+		if (ret) {
+			dev_err(dev,
+				"gpio_request_one('%s'=%d) failed with %d\n",
+				name, gpio, ret);
+			return ret;
+		}
+		if (gpiop)
+			*gpiop = gpio;
+		fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n",
+							__func__, name, gpio);
+	}
+
+	return ret;
+}
+
+static int fbtft_request_gpios_dt(struct fbtft_par *par)
+{
+	int i;
+	int ret;
+
+	if (!par->info->device->of_node)
+		return -EINVAL;
+
+	ret = fbtft_request_one_gpio(par, "reset-gpios", 0, &par->gpio.reset);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "dc-gpios", 0, &par->gpio.dc);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "rd-gpios", 0, &par->gpio.rd);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "wr-gpios", 0, &par->gpio.wr);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "cs-gpios", 0, &par->gpio.cs);
+	if (ret)
+		return ret;
+	ret = fbtft_request_one_gpio(par, "latch-gpios", 0, &par->gpio.latch);
+	if (ret)
+		return ret;
+	for (i = 0; i < 16; i++) {
+		ret = fbtft_request_one_gpio(par, "db-gpios", i,
+						&par->gpio.db[i]);
+		if (ret)
+			return ret;
+		ret = fbtft_request_one_gpio(par, "led-gpios", i,
+						&par->gpio.led[i]);
+		if (ret)
+			return ret;
+		ret = fbtft_request_one_gpio(par, "aux-gpios", i,
+						&par->gpio.aux[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_FB_BACKLIGHT
+int fbtft_backlight_update_status(struct backlight_device *bd)
+{
+	struct fbtft_par *par = bl_get_data(bd);
+	bool polarity = !!(bd->props.state & BL_CORE_DRIVER1);
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+		"%s: polarity=%d, power=%d, fb_blank=%d\n",
+		__func__, polarity, bd->props.power, bd->props.fb_blank);
+
+	if ((bd->props.power == FB_BLANK_UNBLANK) && (bd->props.fb_blank == FB_BLANK_UNBLANK))
+		gpio_set_value(par->gpio.led[0], polarity);
+	else
+		gpio_set_value(par->gpio.led[0], !polarity);
+
+	return 0;
+}
+
+int fbtft_backlight_get_brightness(struct backlight_device *bd)
+{
+	return bd->props.brightness;
+}
+
+void fbtft_unregister_backlight(struct fbtft_par *par)
+{
+	const struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	if (par->info->bl_dev) {
+		par->info->bl_dev->props.power = FB_BLANK_POWERDOWN;
+		backlight_update_status(par->info->bl_dev);
+		bl_ops = par->info->bl_dev->ops;
+		backlight_device_unregister(par->info->bl_dev);
+		par->info->bl_dev = NULL;
+	}
+}
+
+void fbtft_register_backlight(struct fbtft_par *par)
+{
+	struct backlight_device *bd;
+	struct backlight_properties bl_props = { 0, };
+	struct backlight_ops *bl_ops;
+
+	fbtft_par_dbg(DEBUG_BACKLIGHT, par, "%s()\n", __func__);
+
+	if (par->gpio.led[0] == -1) {
+		fbtft_par_dbg(DEBUG_BACKLIGHT, par,
+			"%s(): led pin not set, exiting.\n", __func__);
+		return;
+	}
+
+	bl_ops = devm_kzalloc(par->info->device, sizeof(struct backlight_ops),
+				GFP_KERNEL);
+	if (!bl_ops) {
+		dev_err(par->info->device,
+			"%s: could not allocate memeory for backlight operations.\n",
+			__func__);
+		return;
+	}
+
+	bl_ops->get_brightness = fbtft_backlight_get_brightness;
+	bl_ops->update_status = fbtft_backlight_update_status;
+	bl_props.type = BACKLIGHT_RAW;
+	/* Assume backlight is off, get polarity from current state of pin */
+	bl_props.power = FB_BLANK_POWERDOWN;
+	if (!gpio_get_value(par->gpio.led[0]))
+		bl_props.state |= BL_CORE_DRIVER1;
+
+	bd = backlight_device_register(dev_driver_string(par->info->device),
+				par->info->device, par, bl_ops, &bl_props);
+	if (IS_ERR(bd)) {
+		dev_err(par->info->device,
+			"cannot register backlight device (%ld)\n",
+			PTR_ERR(bd));
+		return;
+	}
+	par->info->bl_dev = bd;
+
+	if (!par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight = fbtft_unregister_backlight;
+}
+#else
+void fbtft_register_backlight(struct fbtft_par *par) { };
+void fbtft_unregister_backlight(struct fbtft_par *par) { };
+#endif
+EXPORT_SYMBOL(fbtft_register_backlight);
+EXPORT_SYMBOL(fbtft_unregister_backlight);
+
+void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	/* Column address set */
+	write_reg(par, 0x2A,
+		(xs >> 8) & 0xFF, xs & 0xFF, (xe >> 8) & 0xFF, xe & 0xFF);
+
+	/* Row adress set */
+	write_reg(par, 0x2B,
+		(ys >> 8) & 0xFF, ys & 0xFF, (ye >> 8) & 0xFF, ye & 0xFF);
+
+	/* Memory write */
+	write_reg(par, 0x2C);
+}
+
+
+void fbtft_reset(struct fbtft_par *par)
+{
+	if (par->gpio.reset == -1)
+		return;
+	fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
+	gpio_set_value(par->gpio.reset, 0);
+	udelay(20);
+	gpio_set_value(par->gpio.reset, 1);
+	mdelay(120);
+}
+
+
+void fbtft_update_display(struct fbtft_par *par, unsigned start_line, unsigned end_line)
+{
+	size_t offset, len;
+	struct timespec ts_start, ts_end, ts_fps, ts_duration;
+	long fps_ms, fps_us, duration_ms, duration_us;
+	long fps, throughput;
+	bool timeit = false;
+	int ret = 0;
+
+	if (unlikely(par->debug & (DEBUG_TIME_FIRST_UPDATE | DEBUG_TIME_EACH_UPDATE))) {
+		if ((par->debug & DEBUG_TIME_EACH_UPDATE) || \
+				((par->debug & DEBUG_TIME_FIRST_UPDATE) && !par->first_update_done)) {
+			getnstimeofday(&ts_start);
+			timeit = true;
+		}
+	}
+
+	/* Sanity checks */
+	if (start_line > end_line) {
+		dev_warn(par->info->device,
+			"%s: start_line=%u is larger than end_line=%u. Shouldn't happen, will do full display update\n",
+			__func__, start_line, end_line);
+		start_line = 0;
+		end_line = par->info->var.yres - 1;
+	}
+	if (start_line > par->info->var.yres - 1 || end_line > par->info->var.yres - 1) {
+		dev_warn(par->info->device,
+			"%s: start_line=%u or end_line=%u is larger than max=%d. Shouldn't happen, will do full display update\n",
+			__func__, start_line, end_line, par->info->var.yres - 1);
+		start_line = 0;
+		end_line = par->info->var.yres - 1;
+	}
+
+	fbtft_par_dbg(DEBUG_UPDATE_DISPLAY, par, "%s(start_line=%u, end_line=%u)\n",
+		__func__, start_line, end_line);
+
+	if (par->fbtftops.set_addr_win)
+		par->fbtftops.set_addr_win(par, 0, start_line,
+				par->info->var.xres-1, end_line);
+
+	offset = start_line * par->info->fix.line_length;
+	len = (end_line - start_line + 1) * par->info->fix.line_length;
+	ret = par->fbtftops.write_vmem(par, offset, len);
+	if (ret < 0)
+		dev_err(par->info->device,
+			"%s: write_vmem failed to update display buffer\n",
+			__func__);
+
+	if (unlikely(timeit)) {
+		getnstimeofday(&ts_end);
+		if (par->update_time.tv_nsec == 0 && par->update_time.tv_sec == 0) {
+			par->update_time.tv_sec = ts_start.tv_sec;
+			par->update_time.tv_nsec = ts_start.tv_nsec;
+		}
+		ts_fps = timespec_sub(ts_start, par->update_time);
+		par->update_time.tv_sec = ts_start.tv_sec;
+		par->update_time.tv_nsec = ts_start.tv_nsec;
+		fps_ms = (ts_fps.tv_sec * 1000) + ((ts_fps.tv_nsec / 1000000) % 1000);
+		fps_us = (ts_fps.tv_nsec / 1000) % 1000;
+		fps = fps_ms * 1000 + fps_us;
+		fps = fps ? 1000000 / fps : 0;
+
+		ts_duration = timespec_sub(ts_end, ts_start);
+		duration_ms = (ts_duration.tv_sec * 1000) + ((ts_duration.tv_nsec / 1000000) % 1000);
+		duration_us = (ts_duration.tv_nsec / 1000) % 1000;
+		throughput = duration_ms * 1000 + duration_us;
+		throughput = throughput ? (len * 1000) / throughput : 0;
+		throughput = throughput * 1000 / 1024;
+
+		dev_info(par->info->device,
+			"Display update: %ld kB/s (%ld.%.3ld ms), fps=%ld (%ld.%.3ld ms)\n",
+			throughput, duration_ms, duration_us,
+			fps, fps_ms, fps_us);
+		par->first_update_done = true;
+	}
+}
+
+
+void fbtft_mkdirty(struct fb_info *info, int y, int height)
+{
+	struct fbtft_par *par = info->par;
+	struct fb_deferred_io *fbdefio = info->fbdefio;
+
+	/* special case, needed ? */
+	if (y == -1) {
+		y = 0;
+		height = info->var.yres - 1;
+	}
+
+	/* Mark display lines/area as dirty */
+	spin_lock(&par->dirty_lock);
+	if (y < par->dirty_lines_start)
+		par->dirty_lines_start = y;
+	if (y + height - 1 > par->dirty_lines_end)
+		par->dirty_lines_end = y + height - 1;
+	spin_unlock(&par->dirty_lock);
+
+	/* Schedule deferred_io to update display (no-op if already on queue)*/
+	schedule_delayed_work(&info->deferred_work, fbdefio->delay);
+}
+
+void fbtft_deferred_io(struct fb_info *info, struct list_head *pagelist)
+{
+	struct fbtft_par *par = info->par;
+	unsigned dirty_lines_start, dirty_lines_end;
+	struct page *page;
+	unsigned long index;
+	unsigned y_low = 0, y_high = 0;
+	int count = 0;
+
+	spin_lock(&par->dirty_lock);
+	dirty_lines_start = par->dirty_lines_start;
+	dirty_lines_end = par->dirty_lines_end;
+	/* set display line markers as clean */
+	par->dirty_lines_start = par->info->var.yres - 1;
+	par->dirty_lines_end = 0;
+	spin_unlock(&par->dirty_lock);
+
+	/* Mark display lines as dirty */
+	list_for_each_entry(page, pagelist, lru) {
+		count++;
+		index = page->index << PAGE_SHIFT;
+		y_low = index / info->fix.line_length;
+		y_high = (index + PAGE_SIZE - 1) / info->fix.line_length;
+		fbtft_dev_dbg(DEBUG_DEFERRED_IO, par, info->device,
+			"page->index=%lu y_low=%d y_high=%d\n",
+			page->index, y_low, y_high);
+		if (y_high > info->var.yres - 1)
+			y_high = info->var.yres - 1;
+		if (y_low < dirty_lines_start)
+			dirty_lines_start = y_low;
+		if (y_high > dirty_lines_end)
+			dirty_lines_end = y_high;
+	}
+
+	par->fbtftops.update_display(info->par,
+					dirty_lines_start, dirty_lines_end);
+}
+
+
+void fbtft_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+	struct fbtft_par *par = info->par;
+
+	fbtft_dev_dbg(DEBUG_FB_FILLRECT, par, info->dev,
+		"%s: dx=%d, dy=%d, width=%d, height=%d\n",
+		__func__, rect->dx, rect->dy, rect->width, rect->height);
+	sys_fillrect(info, rect);
+
+	par->fbtftops.mkdirty(info, rect->dy, rect->height);
+}
+
+void fbtft_fb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+	struct fbtft_par *par = info->par;
+
+	fbtft_dev_dbg(DEBUG_FB_COPYAREA, par, info->dev,
+		"%s: dx=%d, dy=%d, width=%d, height=%d\n",
+		__func__,  area->dx, area->dy, area->width, area->height);
+	sys_copyarea(info, area);
+
+	par->fbtftops.mkdirty(info, area->dy, area->height);
+}
+
+void fbtft_fb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+	struct fbtft_par *par = info->par;
+
+	fbtft_dev_dbg(DEBUG_FB_IMAGEBLIT, par, info->dev,
+		"%s: dx=%d, dy=%d, width=%d, height=%d\n",
+		__func__,  image->dx, image->dy, image->width, image->height);
+	sys_imageblit(info, image);
+
+	par->fbtftops.mkdirty(info, image->dy, image->height);
+}
+
+ssize_t fbtft_fb_write(struct fb_info *info,
+			const char __user *buf, size_t count, loff_t *ppos)
+{
+	struct fbtft_par *par = info->par;
+	ssize_t res;
+
+	fbtft_dev_dbg(DEBUG_FB_WRITE, par, info->dev,
+		"%s: count=%zd, ppos=%llu\n", __func__,  count, *ppos);
+	res = fb_sys_write(info, buf, count, ppos);
+
+	/* TODO: only mark changed area
+	   update all for now */
+	par->fbtftops.mkdirty(info, -1, 0);
+
+	return res;
+}
+
+/* from pxafb.c */
+unsigned int chan_to_field(unsigned chan, struct fb_bitfield *bf)
+{
+	chan &= 0xffff;
+	chan >>= 16 - bf->length;
+	return chan << bf->offset;
+}
+
+int fbtft_fb_setcolreg(unsigned regno,
+			       unsigned red, unsigned green, unsigned blue,
+			       unsigned transp, struct fb_info *info)
+{
+	struct fbtft_par *par = info->par;
+	unsigned val;
+	int ret = 1;
+
+	fbtft_dev_dbg(DEBUG_FB_SETCOLREG, par, info->dev,
+		"%s(regno=%u, red=0x%X, green=0x%X, blue=0x%X, trans=0x%X)\n",
+		__func__, regno, red, green, blue, transp);
+
+	switch (info->fix.visual) {
+	case FB_VISUAL_TRUECOLOR:
+		if (regno < 16) {
+			u32 *pal = info->pseudo_palette;
+
+			val  = chan_to_field(red,   &info->var.red);
+			val |= chan_to_field(green, &info->var.green);
+			val |= chan_to_field(blue,  &info->var.blue);
+
+			pal[regno] = val;
+			ret = 0;
+		}
+		break;
+
+	}
+	return ret;
+}
+
+int fbtft_fb_blank(int blank, struct fb_info *info)
+{
+	struct fbtft_par *par = info->par;
+	int ret = -EINVAL;
+
+	fbtft_dev_dbg(DEBUG_FB_BLANK, par, info->dev, "%s(blank=%d)\n",
+		__func__, blank);
+
+	if (!par->fbtftops.blank)
+		return ret;
+
+	switch (blank) {
+	case FB_BLANK_POWERDOWN:
+	case FB_BLANK_VSYNC_SUSPEND:
+	case FB_BLANK_HSYNC_SUSPEND:
+	case FB_BLANK_NORMAL:
+		ret = par->fbtftops.blank(par, true);
+		break;
+	case FB_BLANK_UNBLANK:
+		ret = par->fbtftops.blank(par, false);
+		break;
+	}
+	return ret;
+}
+
+void fbtft_merge_fbtftops(struct fbtft_ops *dst, struct fbtft_ops *src)
+{
+	if (src->write)
+		dst->write = src->write;
+	if (src->read)
+		dst->read = src->read;
+	if (src->write_vmem)
+		dst->write_vmem = src->write_vmem;
+	if (src->write_register)
+		dst->write_register = src->write_register;
+	if (src->set_addr_win)
+		dst->set_addr_win = src->set_addr_win;
+	if (src->reset)
+		dst->reset = src->reset;
+	if (src->mkdirty)
+		dst->mkdirty = src->mkdirty;
+	if (src->update_display)
+		dst->update_display = src->update_display;
+	if (src->init_display)
+		dst->init_display = src->init_display;
+	if (src->blank)
+		dst->blank = src->blank;
+	if (src->request_gpios_match)
+		dst->request_gpios_match = src->request_gpios_match;
+	if (src->request_gpios)
+		dst->request_gpios = src->request_gpios;
+	if (src->verify_gpios)
+		dst->verify_gpios = src->verify_gpios;
+	if (src->register_backlight)
+		dst->register_backlight = src->register_backlight;
+	if (src->unregister_backlight)
+		dst->unregister_backlight = src->unregister_backlight;
+	if (src->set_var)
+		dst->set_var = src->set_var;
+	if (src->set_gamma)
+		dst->set_gamma = src->set_gamma;
+}
+
+/**
+ * fbtft_framebuffer_alloc - creates a new frame buffer info structure
+ *
+ * @display: pointer to structure describing the display
+ * @dev: pointer to the device for this fb, this can be NULL
+ *
+ * Creates a new frame buffer info structure.
+ *
+ * Also creates and populates the following structures:
+ *   info->fbops
+ *   info->fbdefio
+ *   info->pseudo_palette
+ *   par->fbtftops
+ *   par->txbuf
+ *
+ * Returns the new structure, or NULL if an error occurred.
+ *
+ */
+struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
+					struct device *dev)
+{
+	struct fb_info *info;
+	struct fbtft_par *par;
+	struct fb_ops *fbops = NULL;
+	struct fb_deferred_io *fbdefio = NULL;
+	struct fbtft_platform_data *pdata = dev->platform_data;
+	u8 *vmem = NULL;
+	void *txbuf = NULL;
+	void *buf = NULL;
+	unsigned width;
+	unsigned height;
+	int txbuflen = display->txbuflen;
+	unsigned bpp = display->bpp;
+	unsigned fps = display->fps;
+	int vmem_size, i;
+	int *init_sequence = display->init_sequence;
+	char *gamma = display->gamma;
+	unsigned long *gamma_curves = NULL;
+
+	/* sanity check */
+	if (display->gamma_num * display->gamma_len > FBTFT_GAMMA_MAX_VALUES_TOTAL) {
+		dev_err(dev,
+			"%s: FBTFT_GAMMA_MAX_VALUES_TOTAL=%d is exceeded\n",
+			__func__, FBTFT_GAMMA_MAX_VALUES_TOTAL);
+		return NULL;
+	}
+
+	/* defaults */
+	if (!fps)
+		fps = 20;
+	if (!bpp)
+		bpp = 16;
+
+	if (!pdata) {
+		dev_err(dev, "platform data is missing\n");
+		return NULL;
+	}
+
+	/* override driver values? */
+	if (pdata->fps)
+		fps = pdata->fps;
+	if (pdata->txbuflen)
+		txbuflen = pdata->txbuflen;
+	if (pdata->display.init_sequence)
+		init_sequence = pdata->display.init_sequence;
+	if (pdata->gamma)
+		gamma = pdata->gamma;
+	if (pdata->display.debug)
+		display->debug = pdata->display.debug;
+	if (pdata->display.backlight)
+		display->backlight = pdata->display.backlight;
+	if (pdata->display.width)
+		display->width = pdata->display.width;
+	if (pdata->display.height)
+		display->height = pdata->display.height;
+	if (pdata->display.buswidth)
+		display->buswidth = pdata->display.buswidth;
+	if (pdata->display.regwidth)
+		display->regwidth = pdata->display.regwidth;
+
+	display->debug |= debug;
+	fbtft_expand_debug_value(&display->debug);
+
+	switch (pdata->rotate) {
+	case 90:
+	case 270:
+		width =  display->height;
+		height = display->width;
+		break;
+	default:
+		width =  display->width;
+		height = display->height;
+	}
+
+	vmem_size = display->width * display->height * bpp / 8;
+	vmem = vzalloc(vmem_size);
+	if (!vmem)
+		goto alloc_fail;
+
+	fbops = devm_kzalloc(dev, sizeof(struct fb_ops), GFP_KERNEL);
+	if (!fbops)
+		goto alloc_fail;
+
+	fbdefio = devm_kzalloc(dev, sizeof(struct fb_deferred_io), GFP_KERNEL);
+	if (!fbdefio)
+		goto alloc_fail;
+
+	buf = devm_kzalloc(dev, 128, GFP_KERNEL);
+	if (!buf)
+		goto alloc_fail;
+
+	if (display->gamma_num && display->gamma_len) {
+		gamma_curves = devm_kzalloc(dev, display->gamma_num * display->gamma_len * sizeof(gamma_curves[0]),
+						GFP_KERNEL);
+		if (!gamma_curves)
+			goto alloc_fail;
+	}
+
+	info = framebuffer_alloc(sizeof(struct fbtft_par), dev);
+	if (!info)
+		goto alloc_fail;
+
+	info->screen_base = (u8 __force __iomem *)vmem;
+	info->fbops = fbops;
+	info->fbdefio = fbdefio;
+
+	fbops->owner        =      dev->driver->owner;
+	fbops->fb_read      =      fb_sys_read;
+	fbops->fb_write     =      fbtft_fb_write;
+	fbops->fb_fillrect  =      fbtft_fb_fillrect;
+	fbops->fb_copyarea  =      fbtft_fb_copyarea;
+	fbops->fb_imageblit =      fbtft_fb_imageblit;
+	fbops->fb_setcolreg =      fbtft_fb_setcolreg;
+	fbops->fb_blank     =      fbtft_fb_blank;
+
+	fbdefio->delay =           HZ/fps;
+	fbdefio->deferred_io =     fbtft_deferred_io;
+	fb_deferred_io_init(info);
+
+	strncpy(info->fix.id, dev->driver->name, 16);
+	info->fix.type =           FB_TYPE_PACKED_PIXELS;
+	info->fix.visual =         FB_VISUAL_TRUECOLOR;
+	info->fix.xpanstep =	   0;
+	info->fix.ypanstep =	   0;
+	info->fix.ywrapstep =	   0;
+	info->fix.line_length =    width*bpp/8;
+	info->fix.accel =          FB_ACCEL_NONE;
+	info->fix.smem_len =       vmem_size;
+
+	info->var.rotate =         pdata->rotate;
+	info->var.xres =           width;
+	info->var.yres =           height;
+	info->var.xres_virtual =   info->var.xres;
+	info->var.yres_virtual =   info->var.yres;
+	info->var.bits_per_pixel = bpp;
+	info->var.nonstd =         1;
+
+	/* RGB565 */
+	info->var.red.offset =     11;
+	info->var.red.length =     5;
+	info->var.green.offset =   5;
+	info->var.green.length =   6;
+	info->var.blue.offset =    0;
+	info->var.blue.length =    5;
+	info->var.transp.offset =  0;
+	info->var.transp.length =  0;
+
+	info->flags =              FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
+
+	par = info->par;
+	par->info = info;
+	par->pdata = dev->platform_data;
+	par->debug = display->debug;
+	par->buf = buf;
+	spin_lock_init(&par->dirty_lock);
+	par->bgr = pdata->bgr;
+	par->startbyte = pdata->startbyte;
+	par->init_sequence = init_sequence;
+	par->gamma.curves = gamma_curves;
+	par->gamma.num_curves = display->gamma_num;
+	par->gamma.num_values = display->gamma_len;
+	mutex_init(&par->gamma.lock);
+	info->pseudo_palette = par->pseudo_palette;
+
+	if (par->gamma.curves && gamma) {
+		if (fbtft_gamma_parse_str(par,
+			par->gamma.curves, gamma, strlen(gamma)))
+			goto alloc_fail;
+	}
+
+	/* Transmit buffer */
+	if (txbuflen == -1)
+		txbuflen = vmem_size + 2; /* add in case startbyte is used */
+
+#ifdef __LITTLE_ENDIAN
+	if ((!txbuflen) && (bpp > 8))
+		txbuflen = PAGE_SIZE; /* need buffer for byteswapping */
+#endif
+
+	if (txbuflen > 0) {
+		if (dma) {
+			dev->coherent_dma_mask = ~0;
+			txbuf = dmam_alloc_coherent(dev, txbuflen, &par->txbuf.dma, GFP_DMA);
+		} else {
+			txbuf = devm_kzalloc(par->info->device, txbuflen, GFP_KERNEL);
+		}
+		if (!txbuf)
+			goto alloc_fail;
+		par->txbuf.buf = txbuf;
+		par->txbuf.len = txbuflen;
+	}
+
+	/* Initialize gpios to disabled */
+	par->gpio.reset = -1;
+	par->gpio.dc = -1;
+	par->gpio.rd = -1;
+	par->gpio.wr = -1;
+	par->gpio.cs = -1;
+	par->gpio.latch = -1;
+	for (i = 0; i < 16; i++) {
+		par->gpio.db[i] = -1;
+		par->gpio.led[i] = -1;
+		par->gpio.aux[i] = -1;
+	}
+
+	/* default fbtft operations */
+	par->fbtftops.write = fbtft_write_spi;
+	par->fbtftops.read = fbtft_read_spi;
+	par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+	par->fbtftops.write_register = fbtft_write_reg8_bus8;
+	par->fbtftops.set_addr_win = fbtft_set_addr_win;
+	par->fbtftops.reset = fbtft_reset;
+	par->fbtftops.mkdirty = fbtft_mkdirty;
+	par->fbtftops.update_display = fbtft_update_display;
+	par->fbtftops.request_gpios = fbtft_request_gpios;
+	if (display->backlight)
+		par->fbtftops.register_backlight = fbtft_register_backlight;
+
+	/* use driver provided functions */
+	fbtft_merge_fbtftops(&par->fbtftops, &display->fbtftops);
+
+	return info;
+
+alloc_fail:
+	vfree(vmem);
+
+	return NULL;
+}
+EXPORT_SYMBOL(fbtft_framebuffer_alloc);
+
+/**
+ * fbtft_framebuffer_release - frees up all memory used by the framebuffer
+ *
+ * @info: frame buffer info structure
+ *
+ */
+void fbtft_framebuffer_release(struct fb_info *info)
+{
+	fb_deferred_io_cleanup(info);
+	vfree(info->screen_base);
+	framebuffer_release(info);
+}
+EXPORT_SYMBOL(fbtft_framebuffer_release);
+
+/**
+ *	fbtft_register_framebuffer - registers a tft frame buffer device
+ *	@fb_info: frame buffer info structure
+ *
+ *  Sets SPI driverdata if needed
+ *  Requests needed gpios.
+ *  Initializes display
+ *  Updates display.
+ *	Registers a frame buffer device @fb_info.
+ *
+ *	Returns negative errno on error, or zero for success.
+ *
+ */
+int fbtft_register_framebuffer(struct fb_info *fb_info)
+{
+	int ret;
+	char text1[50] = "";
+	char text2[50] = "";
+	struct fbtft_par *par = fb_info->par;
+	struct spi_device *spi = par->spi;
+
+	/* sanity checks */
+	if (!par->fbtftops.init_display) {
+		dev_err(fb_info->device, "missing fbtftops.init_display()\n");
+		return -EINVAL;
+	}
+
+	if (spi)
+		spi_set_drvdata(spi, fb_info);
+	if (par->pdev)
+		platform_set_drvdata(par->pdev, fb_info);
+
+	ret = par->fbtftops.request_gpios(par);
+	if (ret < 0)
+		goto reg_fail;
+
+	if (par->fbtftops.verify_gpios) {
+		ret = par->fbtftops.verify_gpios(par);
+		if (ret < 0)
+			goto reg_fail;
+	}
+
+	ret = par->fbtftops.init_display(par);
+	if (ret < 0)
+		goto reg_fail;
+	if (par->fbtftops.set_var) {
+		ret = par->fbtftops.set_var(par);
+		if (ret < 0)
+			goto reg_fail;
+	}
+
+	/* update the entire display */
+	par->fbtftops.update_display(par, 0, par->info->var.yres - 1);
+
+	if (par->fbtftops.set_gamma && par->gamma.curves) {
+		ret = par->fbtftops.set_gamma(par, par->gamma.curves);
+		if (ret)
+			goto reg_fail;
+	}
+
+	if (par->fbtftops.register_backlight)
+		par->fbtftops.register_backlight(par);
+
+	ret = register_framebuffer(fb_info);
+	if (ret < 0)
+		goto reg_fail;
+
+	fbtft_sysfs_init(par);
+
+	if (par->txbuf.buf)
+		sprintf(text1, ", %d KiB %sbuffer memory",
+			par->txbuf.len >> 10, par->txbuf.dma ? "DMA " : "");
+	if (spi)
+		sprintf(text2, ", spi%d.%d at %d MHz", spi->master->bus_num,
+				spi->chip_select, spi->max_speed_hz/1000000);
+	dev_info(fb_info->dev,
+		"%s frame buffer, %dx%d, %d KiB video memory%s, fps=%lu%s\n",
+		fb_info->fix.id, fb_info->var.xres, fb_info->var.yres,
+		fb_info->fix.smem_len >> 10, text1,
+		HZ/fb_info->fbdefio->delay, text2);
+
+#ifdef CONFIG_FB_BACKLIGHT
+	/* Turn on backlight if available */
+	if (fb_info->bl_dev) {
+		fb_info->bl_dev->props.power = FB_BLANK_UNBLANK;
+		fb_info->bl_dev->ops->update_status(fb_info->bl_dev);
+	}
+#endif
+
+	return 0;
+
+reg_fail:
+	if (par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight(par);
+	if (spi)
+		spi_set_drvdata(spi, NULL);
+	if (par->pdev)
+		platform_set_drvdata(par->pdev, NULL);
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_register_framebuffer);
+
+/**
+ *	fbtft_unregister_framebuffer - releases a tft frame buffer device
+ *	@fb_info: frame buffer info structure
+ *
+ *  Frees SPI driverdata if needed
+ *  Frees gpios.
+ *	Unregisters frame buffer device.
+ *
+ */
+int fbtft_unregister_framebuffer(struct fb_info *fb_info)
+{
+	struct fbtft_par *par = fb_info->par;
+	struct spi_device *spi = par->spi;
+	int ret;
+
+	if (spi)
+		spi_set_drvdata(spi, NULL);
+	if (par->pdev)
+		platform_set_drvdata(par->pdev, NULL);
+	if (par->fbtftops.unregister_backlight)
+		par->fbtftops.unregister_backlight(par);
+	fbtft_sysfs_exit(par);
+	ret = unregister_framebuffer(fb_info);
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_unregister_framebuffer);
+
+#ifdef CONFIG_OF
+/**
+ * fbtft_init_display_dt() - Device Tree init_display() function
+ * @par: Driver data
+ *
+ * Return: 0 if successful, negative if error
+ */
+static int fbtft_init_display_dt(struct fbtft_par *par)
+{
+	struct device_node *node = par->info->device->of_node;
+	struct property *prop;
+	const __be32 *p;
+	u32 val;
+	int buf[64], i, j;
+	char msg[128];
+	char str[16];
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	if (!node)
+		return -EINVAL;
+
+	prop = of_find_property(node, "init", NULL);
+	p = of_prop_next_u32(prop, NULL, &val);
+	if (!p)
+		return -EINVAL;
+	while (p) {
+		if (val & FBTFT_OF_INIT_CMD) {
+			val &= 0xFFFF;
+			i = 0;
+			while (p && !(val & 0xFFFF0000)) {
+				if (i > 63) {
+					dev_err(par->info->device,
+					"%s: Maximum register values exceeded\n",
+					__func__);
+					return -EINVAL;
+				}
+				buf[i++] = val;
+				p = of_prop_next_u32(prop, p, &val);
+			}
+			/* make debug message */
+			msg[0] = '\0';
+			for (j = 0; j < i; j++) {
+				snprintf(str, 128, " %02X", buf[j]);
+				strcat(msg, str);
+			}
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: write_register:%s\n", msg);
+
+			par->fbtftops.write_register(par, i,
+				buf[0], buf[1], buf[2], buf[3],
+				buf[4], buf[5], buf[6], buf[7],
+				buf[8], buf[9], buf[10], buf[11],
+				buf[12], buf[13], buf[14], buf[15],
+				buf[16], buf[17], buf[18], buf[19],
+				buf[20], buf[21], buf[22], buf[23],
+				buf[24], buf[25], buf[26], buf[27],
+				buf[28], buf[29], buf[30], buf[31],
+				buf[32], buf[33], buf[34], buf[35],
+				buf[36], buf[37], buf[38], buf[39],
+				buf[40], buf[41], buf[42], buf[43],
+				buf[44], buf[45], buf[46], buf[47],
+				buf[48], buf[49], buf[50], buf[51],
+				buf[52], buf[53], buf[54], buf[55],
+				buf[56], buf[57], buf[58], buf[59],
+				buf[60], buf[61], buf[62], buf[63]);
+		} else if (val & FBTFT_OF_INIT_DELAY) {
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: msleep(%u)\n", val & 0xFFFF);
+			msleep(val & 0xFFFF);
+			p = of_prop_next_u32(prop, p, &val);
+		} else {
+			dev_err(par->info->device, "illegal init value 0x%X\n",
+									val);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+#endif
+
+/**
+ * fbtft_init_display() - Generic init_display() function
+ * @par: Driver data
+ *
+ * Uses par->init_sequence to do the initialization
+ *
+ * Return: 0 if successful, negative if error
+ */
+int fbtft_init_display(struct fbtft_par *par)
+{
+	int buf[64];
+	char msg[128];
+	char str[16];
+	int i = 0;
+	int j;
+
+	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
+
+	/* sanity check */
+	if (!par->init_sequence) {
+		dev_err(par->info->device,
+			"error: init_sequence is not set\n");
+		return -EINVAL;
+	}
+
+	/* make sure stop marker exists */
+	for (i = 0; i < FBTFT_MAX_INIT_SEQUENCE; i++)
+		if (par->init_sequence[i] == -3)
+			break;
+	if (i == FBTFT_MAX_INIT_SEQUENCE) {
+		dev_err(par->info->device,
+			"missing stop marker at end of init sequence\n");
+		return -EINVAL;
+	}
+
+	par->fbtftops.reset(par);
+	if (par->gpio.cs != -1)
+		gpio_set_value(par->gpio.cs, 0);  /* Activate chip */
+
+	i = 0;
+	while (i < FBTFT_MAX_INIT_SEQUENCE) {
+		if (par->init_sequence[i] == -3) {
+			/* done */
+			return 0;
+		}
+		if (par->init_sequence[i] >= 0) {
+			dev_err(par->info->device,
+				"missing delimiter at position %d\n", i);
+			return -EINVAL;
+		}
+		if (par->init_sequence[i+1] < 0) {
+			dev_err(par->info->device,
+				"missing value after delimiter %d at position %d\n",
+				par->init_sequence[i], i);
+			return -EINVAL;
+		}
+		switch (par->init_sequence[i]) {
+		case -1:
+			i++;
+			/* make debug message */
+			strcpy(msg, "");
+			j = i + 1;
+			while (par->init_sequence[j] >= 0) {
+				sprintf(str, "0x%02X ", par->init_sequence[j]);
+				strcat(msg, str);
+				j++;
+			}
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: write(0x%02X) %s\n",
+				par->init_sequence[i], msg);
+
+			/* Write */
+			j = 0;
+			while (par->init_sequence[i] >= 0) {
+				if (j > 63) {
+					dev_err(par->info->device,
+					"%s: Maximum register values exceeded\n",
+					__func__);
+					return -EINVAL;
+				}
+				buf[j++] = par->init_sequence[i++];
+			}
+			par->fbtftops.write_register(par, j,
+				buf[0], buf[1], buf[2], buf[3],
+				buf[4], buf[5], buf[6], buf[7],
+				buf[8], buf[9], buf[10], buf[11],
+				buf[12], buf[13], buf[14], buf[15],
+				buf[16], buf[17], buf[18], buf[19],
+				buf[20], buf[21], buf[22], buf[23],
+				buf[24], buf[25], buf[26], buf[27],
+				buf[28], buf[29], buf[30], buf[31],
+				buf[32], buf[33], buf[34], buf[35],
+				buf[36], buf[37], buf[38], buf[39],
+				buf[40], buf[41], buf[42], buf[43],
+				buf[44], buf[45], buf[46], buf[47],
+				buf[48], buf[49], buf[50], buf[51],
+				buf[52], buf[53], buf[54], buf[55],
+				buf[56], buf[57], buf[58], buf[59],
+				buf[60], buf[61], buf[62], buf[63]);
+			break;
+		case -2:
+			i++;
+			fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
+				"init: mdelay(%d)\n", par->init_sequence[i]);
+			mdelay(par->init_sequence[i++]);
+			break;
+		default:
+			dev_err(par->info->device,
+				"unknown delimiter %d at position %d\n",
+				par->init_sequence[i], i);
+			return -EINVAL;
+		}
+	}
+
+	dev_err(par->info->device,
+		"%s: something is wrong. Shouldn't get here.\n", __func__);
+	return -EINVAL;
+}
+EXPORT_SYMBOL(fbtft_init_display);
+
+/**
+ * fbtft_verify_gpios() - Generic verify_gpios() function
+ * @par: Driver data
+ *
+ * Uses @spi, @pdev and @buswidth to determine which GPIOs is needed
+ *
+ * Return: 0 if successful, negative if error
+ */
+int fbtft_verify_gpios(struct fbtft_par *par)
+{
+	struct fbtft_platform_data *pdata;
+	int i;
+
+	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
+
+	pdata = par->info->device->platform_data;
+	if (pdata->display.buswidth != 9 && par->startbyte == 0 && \
+							par->gpio.dc < 0) {
+		dev_err(par->info->device,
+			"Missing info about 'dc' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+
+	if (!par->pdev)
+		return 0;
+
+	if (par->gpio.wr < 0) {
+		dev_err(par->info->device, "Missing 'wr' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	for (i = 0; i < pdata->display.buswidth; i++) {
+		if (par->gpio.db[i] < 0) {
+			dev_err(par->info->device,
+				"Missing 'db%02d' gpio. Aborting.\n", i);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+/* returns 0 if the property is not present */
+static u32 fbtft_of_value(struct device_node *node, const char *propname)
+{
+	int ret;
+	u32 val = 0;
+
+	ret = of_property_read_u32(node, propname, &val);
+	if (ret == 0)
+		pr_info("%s: %s = %u\n", __func__, propname, val);
+
+	return val;
+}
+
+static struct fbtft_platform_data *fbtft_probe_dt(struct device *dev)
+{
+	struct device_node *node = dev->of_node;
+	struct fbtft_platform_data *pdata;
+
+	if (!node) {
+		dev_err(dev, "Missing platform data or DT\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return ERR_PTR(-ENOMEM);
+
+	pdata->display.width = fbtft_of_value(node, "width");
+	pdata->display.height = fbtft_of_value(node, "height");
+	pdata->display.regwidth = fbtft_of_value(node, "regwidth");
+	pdata->display.buswidth = fbtft_of_value(node, "buswidth");
+	pdata->display.backlight = fbtft_of_value(node, "backlight");
+	pdata->display.bpp = fbtft_of_value(node, "bpp");
+	pdata->display.debug = fbtft_of_value(node, "debug");
+	pdata->rotate = fbtft_of_value(node, "rotate");
+	pdata->bgr = of_property_read_bool(node, "bgr");
+	pdata->fps = fbtft_of_value(node, "fps");
+	pdata->txbuflen = fbtft_of_value(node, "txbuflen");
+	pdata->startbyte = fbtft_of_value(node, "startbyte");
+	of_property_read_string(node, "gamma", (const char **)&pdata->gamma);
+
+	if (of_find_property(node, "led-gpios", NULL))
+		pdata->display.backlight = 1;
+	if (of_find_property(node, "init", NULL))
+		pdata->display.fbtftops.init_display = fbtft_init_display_dt;
+	pdata->display.fbtftops.request_gpios = fbtft_request_gpios_dt;
+
+	return pdata;
+}
+#else
+static struct fbtft_platform_data *fbtft_probe_dt(struct device *dev)
+{
+	dev_err(dev, "Missing platform data\n");
+	return ERR_PTR(-EINVAL);
+}
+#endif
+
+/**
+ * fbtft_probe_common() - Generic device probe() helper function
+ * @display: Display properties
+ * @sdev: SPI device
+ * @pdev: Platform device
+ *
+ * Allocates, initializes and registers a framebuffer
+ *
+ * Either @sdev or @pdev should be NULL
+ *
+ * Return: 0 if successful, negative if error
+ */
+int fbtft_probe_common(struct fbtft_display *display,
+			struct spi_device *sdev, struct platform_device *pdev)
+{
+	struct device *dev;
+	struct fb_info *info;
+	struct fbtft_par *par;
+	struct fbtft_platform_data *pdata;
+	int ret;
+
+	if (sdev)
+		dev = &sdev->dev;
+	else
+		dev = &pdev->dev;
+
+	if (unlikely(display->debug & DEBUG_DRIVER_INIT_FUNCTIONS))
+		dev_info(dev, "%s()\n", __func__);
+
+	pdata = dev->platform_data;
+	if (!pdata) {
+		pdata = fbtft_probe_dt(dev);
+		if (IS_ERR(pdata))
+			return PTR_ERR(pdata);
+		dev->platform_data = pdata;
+	}
+
+	info = fbtft_framebuffer_alloc(display, dev);
+	if (!info)
+		return -ENOMEM;
+
+	par = info->par;
+	par->spi = sdev;
+	par->pdev = pdev;
+
+	if (display->buswidth == 0) {
+		dev_err(dev, "buswidth is not set\n");
+		return -EINVAL;
+	}
+
+	/* write register functions */
+	if (display->regwidth == 8 && display->buswidth == 8) {
+		par->fbtftops.write_register = fbtft_write_reg8_bus8;
+	} else
+	if (display->regwidth == 8 && display->buswidth == 9 && par->spi) {
+		par->fbtftops.write_register = fbtft_write_reg8_bus9;
+	} else if (display->regwidth == 16 && display->buswidth == 8) {
+		par->fbtftops.write_register = fbtft_write_reg16_bus8;
+	} else if (display->regwidth == 16 && display->buswidth == 16) {
+		par->fbtftops.write_register = fbtft_write_reg16_bus16;
+	} else {
+		dev_warn(dev,
+			"no default functions for regwidth=%d and buswidth=%d\n",
+			display->regwidth, display->buswidth);
+	}
+
+	/* write_vmem() functions */
+	if (display->buswidth == 8)
+		par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+	else if (display->buswidth == 9)
+		par->fbtftops.write_vmem = fbtft_write_vmem16_bus9;
+	else if (display->buswidth == 16)
+		par->fbtftops.write_vmem = fbtft_write_vmem16_bus16;
+
+	/* GPIO write() functions */
+	if (par->pdev) {
+		if (display->buswidth == 8)
+			par->fbtftops.write = fbtft_write_gpio8_wr;
+		else if (display->buswidth == 16)
+			par->fbtftops.write = fbtft_write_gpio16_wr;
+	}
+
+	/* 9-bit SPI setup */
+	if (par->spi && display->buswidth == 9) {
+		par->spi->bits_per_word = 9;
+		ret = par->spi->master->setup(par->spi);
+		if (ret) {
+			dev_warn(&par->spi->dev,
+				"9-bit SPI not available, emulating using 8-bit.\n");
+			par->spi->bits_per_word = 8;
+			ret = par->spi->master->setup(par->spi);
+			if (ret)
+				goto out_release;
+			/* allocate buffer with room for dc bits */
+			par->extra = devm_kzalloc(par->info->device,
+				par->txbuf.len + (par->txbuf.len / 8) + 8,
+				GFP_KERNEL);
+			if (!par->extra) {
+				ret = -ENOMEM;
+				goto out_release;
+			}
+			par->fbtftops.write = fbtft_write_spi_emulate_9;
+		}
+	}
+
+	if (!par->fbtftops.verify_gpios)
+		par->fbtftops.verify_gpios = fbtft_verify_gpios;
+
+	/* make sure we still use the driver provided functions */
+	fbtft_merge_fbtftops(&par->fbtftops, &display->fbtftops);
+
+	/* use init_sequence if provided */
+	if (par->init_sequence)
+		par->fbtftops.init_display = fbtft_init_display;
+
+	/* use platform_data provided functions above all */
+	fbtft_merge_fbtftops(&par->fbtftops, &pdata->display.fbtftops);
+
+	ret = fbtft_register_framebuffer(info);
+	if (ret < 0)
+		goto out_release;
+
+	return 0;
+
+out_release:
+	fbtft_framebuffer_release(info);
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_probe_common);
+
+/**
+ * fbtft_remove_common() - Generic device remove() helper function
+ * @dev: Device
+ * @info: Framebuffer
+ *
+ * Unregisters and releases the framebuffer
+ *
+ * Return: 0 if successful, negative if error
+ */
+int fbtft_remove_common(struct device *dev, struct fb_info *info)
+{
+	struct fbtft_par *par;
+
+	if (!info)
+		return -EINVAL;
+	par = info->par;
+	if (par)
+		fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par,
+			"%s()\n", __func__);
+	fbtft_unregister_framebuffer(info);
+	fbtft_framebuffer_release(info);
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_remove_common);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/fbtft-io.c b/drivers/staging/fbtft/fbtft-io.c
new file mode 100644
index 0000000..dfa2c46
--- /dev/null
+++ b/drivers/staging/fbtft/fbtft-io.c
@@ -0,0 +1,409 @@
+#include <linux/export.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#ifdef CONFIG_ARCH_BCM2708
+#include <mach/platform.h>
+#endif
+#include "fbtft.h"
+
+int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len)
+{
+	struct spi_transfer t = {
+		.tx_buf = buf,
+		.len = len,
+	};
+	struct spi_message m;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	if (!par->spi) {
+		dev_err(par->info->device,
+			"%s: par->spi is unexpectedly NULL\n", __func__);
+		return -1;
+	}
+
+	spi_message_init(&m);
+	if (par->txbuf.dma && buf == par->txbuf.buf) {
+		t.tx_dma = par->txbuf.dma;
+		m.is_dma_mapped = 1;
+	}
+	spi_message_add_tail(&t, &m);
+	return spi_sync(par->spi, &m);
+}
+EXPORT_SYMBOL(fbtft_write_spi);
+
+/**
+ * fbtft_write_spi_emulate_9() - write SPI emulating 9-bit
+ * @par: Driver data
+ * @buf: Buffer to write
+ * @len: Length of buffer (must be divisible by 8)
+ *
+ * When 9-bit SPI is not available, this function can be used to emulate that.
+ * par->extra must hold a transformation buffer used for transfer.
+ */
+int fbtft_write_spi_emulate_9(struct fbtft_par *par, void *buf, size_t len)
+{
+	u16 *src = buf;
+	u8 *dst = par->extra;
+	size_t size = len / 2;
+	size_t added = 0;
+	int bits, i, j;
+	u64 val, dc, tmp;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	if (!par->extra) {
+		dev_err(par->info->device, "%s: error: par->extra is NULL\n",
+			__func__);
+		return -EINVAL;
+	}
+	if ((len % 8) != 0) {
+		dev_err(par->info->device,
+			"%s: error: len=%d must be divisible by 8\n",
+			__func__, len);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < size; i += 8) {
+		tmp = 0;
+		bits = 63;
+		for (j = 0; j < 7; j++) {
+			dc = (*src & 0x0100) ? 1 : 0;
+			val = *src & 0x00FF;
+			tmp |= dc << bits;
+			bits -= 8;
+			tmp |= val << bits--;
+			src++;
+		}
+		tmp |= ((*src & 0x0100) ? 1 : 0);
+		*(u64 *)dst = cpu_to_be64(tmp);
+		dst += 8;
+		*dst++ = (u8)(*src++ & 0x00FF);
+		added++;
+	}
+
+	return spi_write(par->spi, par->extra, size + added);
+}
+EXPORT_SYMBOL(fbtft_write_spi_emulate_9);
+
+int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len)
+{
+	int ret;
+	u8 txbuf[32] = { 0, };
+	struct spi_transfer	t = {
+			.speed_hz = 2000000,
+			.rx_buf		= buf,
+			.len		= len,
+		};
+	struct spi_message	m;
+
+	if (!par->spi) {
+		dev_err(par->info->device,
+			"%s: par->spi is unexpectedly NULL\n", __func__);
+		return -ENODEV;
+	}
+
+	if (par->startbyte) {
+		if (len > 32) {
+			dev_err(par->info->device,
+				"%s: len=%d can't be larger than 32 when using 'startbyte'\n",
+				__func__, len);
+			return -EINVAL;
+		}
+		txbuf[0] = par->startbyte | 0x3;
+		t.tx_buf = txbuf;
+		fbtft_par_dbg_hex(DEBUG_READ, par, par->info->device, u8,
+			txbuf, len, "%s(len=%d) txbuf => ", __func__, len);
+	}
+
+	spi_message_init(&m);
+	spi_message_add_tail(&t, &m);
+	ret = spi_sync(par->spi, &m);
+	fbtft_par_dbg_hex(DEBUG_READ, par, par->info->device, u8, buf, len,
+		"%s(len=%d) buf <= ", __func__, len);
+
+	return ret;
+}
+EXPORT_SYMBOL(fbtft_read_spi);
+
+
+#ifdef CONFIG_ARCH_BCM2708
+
+/*
+ *  Raspberry Pi
+ *  -  writing directly to the registers is 40-50% faster than
+ *     optimized use of gpiolib
+ */
+
+#define GPIOSET(no, ishigh)           \
+do {                                  \
+	if (ishigh)                   \
+		set |= (1 << (no));   \
+	else                          \
+		reset |= (1 << (no)); \
+} while (0)
+
+int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
+{
+	unsigned int set = 0;
+	unsigned int reset = 0;
+	u8 data;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len--) {
+		data = *(u8 *) buf;
+		buf++;
+
+		/* Set data */
+		GPIOSET(par->gpio.db[0], (data&0x01));
+		GPIOSET(par->gpio.db[1], (data&0x02));
+		GPIOSET(par->gpio.db[2], (data&0x04));
+		GPIOSET(par->gpio.db[3], (data&0x08));
+		GPIOSET(par->gpio.db[4], (data&0x10));
+		GPIOSET(par->gpio.db[5], (data&0x20));
+		GPIOSET(par->gpio.db[6], (data&0x40));
+		GPIOSET(par->gpio.db[7], (data&0x80));
+		writel(set, __io_address(GPIO_BASE+0x1C));
+		writel(reset, __io_address(GPIO_BASE+0x28));
+
+		/* Pulse /WR low */
+		writel((1<<par->gpio.wr),  __io_address(GPIO_BASE+0x28));
+		writel(0,  __io_address(GPIO_BASE+0x28)); /* used as a delay */
+		writel((1<<par->gpio.wr),  __io_address(GPIO_BASE+0x1C));
+
+		set = 0;
+		reset = 0;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_write_gpio8_wr);
+
+int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
+{
+	unsigned int set = 0;
+	unsigned int reset = 0;
+	u16 data;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len) {
+		len -= 2;
+		data = *(u16 *) buf;
+		buf += 2;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Set data */
+		GPIOSET(par->gpio.db[0],  (data&0x0001));
+		GPIOSET(par->gpio.db[1],  (data&0x0002));
+		GPIOSET(par->gpio.db[2],  (data&0x0004));
+		GPIOSET(par->gpio.db[3],  (data&0x0008));
+		GPIOSET(par->gpio.db[4],  (data&0x0010));
+		GPIOSET(par->gpio.db[5],  (data&0x0020));
+		GPIOSET(par->gpio.db[6],  (data&0x0040));
+		GPIOSET(par->gpio.db[7],  (data&0x0080));
+
+		GPIOSET(par->gpio.db[8],  (data&0x0100));
+		GPIOSET(par->gpio.db[9],  (data&0x0200));
+		GPIOSET(par->gpio.db[10], (data&0x0400));
+		GPIOSET(par->gpio.db[11], (data&0x0800));
+		GPIOSET(par->gpio.db[12], (data&0x1000));
+		GPIOSET(par->gpio.db[13], (data&0x2000));
+		GPIOSET(par->gpio.db[14], (data&0x4000));
+		GPIOSET(par->gpio.db[15], (data&0x8000));
+
+		writel(set, __io_address(GPIO_BASE+0x1C));
+		writel(reset, __io_address(GPIO_BASE+0x28));
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+		set = 0;
+		reset = 0;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_write_gpio16_wr);
+
+int fbtft_write_gpio16_wr_latched(struct fbtft_par *par, void *buf, size_t len)
+{
+	unsigned int set = 0;
+	unsigned int reset = 0;
+	u16 data;
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len) {
+		len -= 2;
+		data = *(u16 *) buf;
+		buf += 2;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Low byte */
+		GPIOSET(par->gpio.db[0],  (data&0x0001));
+		GPIOSET(par->gpio.db[1],  (data&0x0002));
+		GPIOSET(par->gpio.db[2],  (data&0x0004));
+		GPIOSET(par->gpio.db[3],  (data&0x0008));
+		GPIOSET(par->gpio.db[4],  (data&0x0010));
+		GPIOSET(par->gpio.db[5],  (data&0x0020));
+		GPIOSET(par->gpio.db[6],  (data&0x0040));
+		GPIOSET(par->gpio.db[7],  (data&0x0080));
+		writel(set, __io_address(GPIO_BASE+0x1C));
+		writel(reset, __io_address(GPIO_BASE+0x28));
+
+		/* Pulse 'latch' high */
+		gpio_set_value(par->gpio.latch, 1);
+		gpio_set_value(par->gpio.latch, 0);
+
+		/* High byte */
+		GPIOSET(par->gpio.db[0], (data&0x0100));
+		GPIOSET(par->gpio.db[1], (data&0x0200));
+		GPIOSET(par->gpio.db[2], (data&0x0400));
+		GPIOSET(par->gpio.db[3], (data&0x0800));
+		GPIOSET(par->gpio.db[4], (data&0x1000));
+		GPIOSET(par->gpio.db[5], (data&0x2000));
+		GPIOSET(par->gpio.db[6], (data&0x4000));
+		GPIOSET(par->gpio.db[7], (data&0x8000));
+		writel(set, __io_address(GPIO_BASE+0x1C));
+		writel(reset, __io_address(GPIO_BASE+0x28));
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+		set = 0;
+		reset = 0;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_write_gpio16_wr_latched);
+
+#undef GPIOSET
+
+#else
+
+/*
+ * Optimized use of gpiolib is twice as fast as no optimization
+ * only one driver can use the optimized version at a time
+ */
+int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len)
+{
+	u8 data;
+	int i;
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+	static u8 prev_data;
+#endif
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len--) {
+		data = *(u8 *) buf;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Set data */
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		if (data == prev_data) {
+			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+		} else {
+			for (i = 0; i < 8; i++) {
+				if ((data & 1) != (prev_data & 1))
+					gpio_set_value(par->gpio.db[i],
+								(data & 1));
+				data >>= 1;
+				prev_data >>= 1;
+			}
+		}
+#else
+		for (i = 0; i < 8; i++) {
+			gpio_set_value(par->gpio.db[i], (data & 1));
+			data >>= 1;
+		}
+#endif
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		prev_data = *(u8 *) buf;
+#endif
+		buf++;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_write_gpio8_wr);
+
+int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len)
+{
+	u16 data;
+	int i;
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+	static u16 prev_data;
+#endif
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len) {
+		data = *(u16 *) buf;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Set data */
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		if (data == prev_data) {
+			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+		} else {
+			for (i = 0; i < 16; i++) {
+				if ((data & 1) != (prev_data & 1))
+					gpio_set_value(par->gpio.db[i],
+								(data & 1));
+				data >>= 1;
+				prev_data >>= 1;
+			}
+		}
+#else
+		for (i = 0; i < 16; i++) {
+			gpio_set_value(par->gpio.db[i], (data & 1));
+			data >>= 1;
+		}
+#endif
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		prev_data = *(u16 *) buf;
+#endif
+		buf += 2;
+		len -= 2;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(fbtft_write_gpio16_wr);
+
+int fbtft_write_gpio16_wr_latched(struct fbtft_par *par, void *buf, size_t len)
+{
+	dev_err(par->info->device, "%s: function not implemented\n", __func__);
+	return -1;
+}
+EXPORT_SYMBOL(fbtft_write_gpio16_wr_latched);
+
+#endif /* CONFIG_ARCH_BCM2708 */
diff --git a/drivers/staging/fbtft/fbtft-sysfs.c b/drivers/staging/fbtft/fbtft-sysfs.c
new file mode 100644
index 0000000..45f8de3
--- /dev/null
+++ b/drivers/staging/fbtft/fbtft-sysfs.c
@@ -0,0 +1,222 @@
+#include "fbtft.h"
+
+
+static int get_next_ulong(char **str_p, unsigned long *val, char *sep, int base)
+{
+	char *p_val;
+	int ret;
+
+	if (!str_p || !(*str_p))
+		return -EINVAL;
+
+	p_val = strsep(str_p, sep);
+
+	if (!p_val)
+		return -EINVAL;
+
+	ret = kstrtoul(p_val, base, val);
+	if (ret)
+		return -EINVAL;
+
+	return 0;
+}
+
+int fbtft_gamma_parse_str(struct fbtft_par *par, unsigned long *curves,
+						const char *str, int size)
+{
+	char *str_p, *curve_p = NULL;
+	char *tmp;
+	unsigned long val = 0;
+	int ret = 0;
+	int curve_counter, value_counter;
+
+	fbtft_par_dbg(DEBUG_SYSFS, par, "%s() str=\n", __func__);
+
+	if (!str || !curves)
+		return -EINVAL;
+
+	fbtft_par_dbg(DEBUG_SYSFS, par, "%s\n", str);
+
+	tmp = kmalloc(size+1, GFP_KERNEL);
+	if (!tmp)
+		return -ENOMEM;
+	memcpy(tmp, str, size+1);
+
+	/* replace optional separators */
+	str_p = tmp;
+	while (*str_p) {
+		if (*str_p == ',')
+			*str_p = ' ';
+		if (*str_p == ';')
+			*str_p = '\n';
+		str_p++;
+	}
+
+	str_p = strim(tmp);
+
+	curve_counter = 0;
+	while (str_p) {
+		if (curve_counter == par->gamma.num_curves) {
+			dev_err(par->info->device, "Gamma: Too many curves\n");
+			ret = -EINVAL;
+			goto out;
+		}
+		curve_p = strsep(&str_p, "\n");
+		value_counter = 0;
+		while (curve_p) {
+			if (value_counter == par->gamma.num_values) {
+				dev_err(par->info->device,
+					"Gamma: Too many values\n");
+				ret = -EINVAL;
+				goto out;
+			}
+			ret = get_next_ulong(&curve_p, &val, " ", 16);
+			if (ret)
+				goto out;
+			curves[curve_counter * par->gamma.num_values + value_counter] = val;
+			value_counter++;
+		}
+		if (value_counter != par->gamma.num_values) {
+			dev_err(par->info->device, "Gamma: Too few values\n");
+			ret = -EINVAL;
+			goto out;
+		}
+		curve_counter++;
+	}
+	if (curve_counter != par->gamma.num_curves) {
+		dev_err(par->info->device, "Gamma: Too few curves\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+out:
+	kfree(tmp);
+	return ret;
+}
+
+static ssize_t
+sprintf_gamma(struct fbtft_par *par, unsigned long *curves, char *buf)
+{
+	ssize_t len = 0;
+	unsigned int i, j;
+
+	mutex_lock(&par->gamma.lock);
+	for (i = 0; i < par->gamma.num_curves; i++) {
+		for (j = 0; j < par->gamma.num_values; j++)
+			len += scnprintf(&buf[len], PAGE_SIZE,
+				"%04lx ", curves[i*par->gamma.num_values + j]);
+		buf[len-1] = '\n';
+	}
+	mutex_unlock(&par->gamma.lock);
+
+	return len;
+}
+
+static ssize_t store_gamma_curve(struct device *device,
+					struct device_attribute *attr,
+					const char *buf, size_t count)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+	unsigned long tmp_curves[FBTFT_GAMMA_MAX_VALUES_TOTAL];
+	int ret;
+
+	ret = fbtft_gamma_parse_str(par, tmp_curves, buf, count);
+	if (ret)
+		return ret;
+
+	ret = par->fbtftops.set_gamma(par, tmp_curves);
+	if (ret)
+		return ret;
+
+	mutex_lock(&par->gamma.lock);
+	memcpy(par->gamma.curves, tmp_curves,
+		par->gamma.num_curves * par->gamma.num_values * sizeof(tmp_curves[0]));
+	mutex_unlock(&par->gamma.lock);
+
+	return count;
+}
+
+static ssize_t show_gamma_curve(struct device *device,
+				struct device_attribute *attr, char *buf)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+
+	return sprintf_gamma(par, par->gamma.curves, buf);
+}
+
+static struct device_attribute gamma_device_attrs[] = {
+	__ATTR(gamma, 0660, show_gamma_curve, store_gamma_curve),
+};
+
+
+void fbtft_expand_debug_value(unsigned long *debug)
+{
+	switch (*debug & 0b111) {
+	case 1:
+		*debug |= DEBUG_LEVEL_1;
+		break;
+	case 2:
+		*debug |= DEBUG_LEVEL_2;
+		break;
+	case 3:
+		*debug |= DEBUG_LEVEL_3;
+		break;
+	case 4:
+		*debug |= DEBUG_LEVEL_4;
+		break;
+	case 5:
+		*debug |= DEBUG_LEVEL_5;
+		break;
+	case 6:
+		*debug |= DEBUG_LEVEL_6;
+		break;
+	case 7:
+		*debug = 0xFFFFFFFF;
+		break;
+	}
+}
+
+static ssize_t store_debug(struct device *device,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+	int ret;
+
+	ret = kstrtoul(buf, 10, &par->debug);
+	if (ret)
+		return ret;
+	fbtft_expand_debug_value(&par->debug);
+
+	return count;
+}
+
+static ssize_t show_debug(struct device *device,
+				struct device_attribute *attr, char *buf)
+{
+	struct fb_info *fb_info = dev_get_drvdata(device);
+	struct fbtft_par *par = fb_info->par;
+
+	return snprintf(buf, PAGE_SIZE, "%lu\n", par->debug);
+}
+
+static struct device_attribute debug_device_attr = \
+	__ATTR(debug, 0660, show_debug, store_debug);
+
+
+void fbtft_sysfs_init(struct fbtft_par *par)
+{
+	device_create_file(par->info->dev, &debug_device_attr);
+	if (par->gamma.curves && par->fbtftops.set_gamma)
+		device_create_file(par->info->dev, &gamma_device_attrs[0]);
+}
+
+void fbtft_sysfs_exit(struct fbtft_par *par)
+{
+	device_remove_file(par->info->dev, &debug_device_attr);
+	if (par->gamma.curves && par->fbtftops.set_gamma)
+		device_remove_file(par->info->dev, &gamma_device_attrs[0]);
+}
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
new file mode 100644
index 0000000..0dbf3f9
--- /dev/null
+++ b/drivers/staging/fbtft/fbtft.h
@@ -0,0 +1,447 @@
+/*
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __LINUX_FBTFT_H
+#define __LINUX_FBTFT_H
+
+#include <linux/fb.h>
+#include <linux/spinlock.h>
+#include <linux/spi/spi.h>
+#include <linux/platform_device.h>
+
+
+#define FBTFT_NOP		0x00
+#define FBTFT_SWRESET	0x01
+#define FBTFT_RDDID		0x04
+#define FBTFT_RDDST		0x09
+#define FBTFT_CASET		0x2A
+#define FBTFT_RASET		0x2B
+#define FBTFT_RAMWR		0x2C
+
+#define FBTFT_ONBOARD_BACKLIGHT 2
+
+#define FBTFT_GPIO_NO_MATCH		0xFFFF
+#define FBTFT_GPIO_NAME_SIZE	32
+#define FBTFT_MAX_INIT_SEQUENCE      512
+#define FBTFT_GAMMA_MAX_VALUES_TOTAL 128
+
+#define FBTFT_OF_INIT_CMD	BIT(24)
+#define FBTFT_OF_INIT_DELAY	BIT(25)
+
+/**
+ * struct fbtft_gpio - Structure that holds one pinname to gpio mapping
+ * @name: pinname (reset, dc, etc.)
+ * @gpio: GPIO number
+ *
+ */
+struct fbtft_gpio {
+	char name[FBTFT_GPIO_NAME_SIZE];
+	unsigned gpio;
+};
+
+struct fbtft_par;
+
+/**
+ * struct fbtft_ops - FBTFT operations structure
+ * @write: Writes to interface bus
+ * @read: Reads from interface bus
+ * @write_vmem: Writes video memory to display
+ * @write_reg: Writes to controller register
+ * @set_addr_win: Set the GRAM update window
+ * @reset: Reset the LCD controller
+ * @mkdirty: Marks display lines for update
+ * @update_display: Updates the display
+ * @init_display: Initializes the display
+ * @blank: Blank the display (optional)
+ * @request_gpios_match: Do pinname to gpio matching
+ * @request_gpios: Request gpios from the kernel
+ * @free_gpios: Free previously requested gpios
+ * @verify_gpios: Verify that necessary gpios is present (optional)
+ * @register_backlight: Used to register backlight device (optional)
+ * @unregister_backlight: Unregister backlight device (optional)
+ * @set_var: Configure LCD with values from variables like @rotate and @bgr
+ *           (optional)
+ * @set_gamma: Set Gamma curve (optional)
+ *
+ * Most of these operations have default functions assigned to them in
+ *     fbtft_framebuffer_alloc()
+ */
+struct fbtft_ops {
+	int (*write)(struct fbtft_par *par, void *buf, size_t len);
+	int (*read)(struct fbtft_par *par, void *buf, size_t len);
+	int (*write_vmem)(struct fbtft_par *par, size_t offset, size_t len);
+	void (*write_register)(struct fbtft_par *par, int len, ...);
+
+	void (*set_addr_win)(struct fbtft_par *par,
+		int xs, int ys, int xe, int ye);
+	void (*reset)(struct fbtft_par *par);
+	void (*mkdirty)(struct fb_info *info, int from, int to);
+	void (*update_display)(struct fbtft_par *par,
+				unsigned start_line, unsigned end_line);
+	int (*init_display)(struct fbtft_par *par);
+	int (*blank)(struct fbtft_par *par, bool on);
+
+	unsigned long (*request_gpios_match)(struct fbtft_par *par,
+		const struct fbtft_gpio *gpio);
+	int (*request_gpios)(struct fbtft_par *par);
+	int (*verify_gpios)(struct fbtft_par *par);
+
+	void (*register_backlight)(struct fbtft_par *par);
+	void (*unregister_backlight)(struct fbtft_par *par);
+
+	int (*set_var)(struct fbtft_par *par);
+	int (*set_gamma)(struct fbtft_par *par, unsigned long *curves);
+};
+
+/**
+ * struct fbtft_display - Describes the display properties
+ * @width: Width of display in pixels
+ * @height: Height of display in pixels
+ * @regwidth: LCD Controller Register width in bits
+ * @buswidth: Display interface bus width in bits
+ * @backlight: Backlight type.
+ * @fbtftops: FBTFT operations provided by driver or device (platform_data)
+ * @bpp: Bits per pixel
+ * @fps: Frames per second
+ * @txbuflen: Size of transmit buffer
+ * @init_sequence: Pointer to LCD initialization array
+ * @gamma: String representation of Gamma curve(s)
+ * @gamma_num: Number of Gamma curves
+ * @gamma_len: Number of values per Gamma curve
+ * @debug: Initial debug value
+ *
+ * This structure is not stored by FBTFT except for init_sequence.
+ */
+struct fbtft_display {
+	unsigned width;
+	unsigned height;
+	unsigned regwidth;
+	unsigned buswidth;
+	unsigned backlight;
+	struct fbtft_ops fbtftops;
+	unsigned bpp;
+	unsigned fps;
+	int txbuflen;
+	int *init_sequence;
+	char *gamma;
+	int gamma_num;
+	int gamma_len;
+	unsigned long debug;
+};
+
+/**
+ * struct fbtft_platform_data - Passes display specific data to the driver
+ * @display: Display properties
+ * @gpios: Pointer to an array of piname to gpio mappings
+ * @rotate: Display rotation angle
+ * @bgr: LCD Controller BGR bit
+ * @fps: Frames per second (this will go away, use @fps in @fbtft_display)
+ * @txbuflen: Size of transmit buffer
+ * @startbyte: When set, enables use of Startbyte in transfers
+ * @gamma: String representation of Gamma curve(s)
+ * @extra: A way to pass extra info
+ */
+struct fbtft_platform_data {
+	struct fbtft_display display;
+	const struct fbtft_gpio *gpios;
+	unsigned rotate;
+	bool bgr;
+	unsigned fps;
+	int txbuflen;
+	u8 startbyte;
+	char *gamma;
+	void *extra;
+};
+
+/**
+ * struct fbtft_par - Main FBTFT data structure
+ *
+ * This structure holds all relevant data to operate the display
+ *
+ * See sourcefile for documentation since nested structs is not
+ * supported by kernel-doc.
+ *
+ */
+/* @spi: Set if it is a SPI device
+ * @pdev: Set if it is a platform device
+ * @info: Pointer to framebuffer fb_info structure
+ * @pdata: Pointer to platform data
+ * @ssbuf: Not used
+ * @pseudo_palette: Used by fb_set_colreg()
+ * @txbuf.buf: Transmit buffer
+ * @txbuf.len: Transmit buffer length
+ * @buf: Small buffer used when writing init data over SPI
+ * @startbyte: Used by some controllers when in SPI mode.
+ *             Format: 6 bit Device id + RS bit + RW bit
+ * @fbtftops: FBTFT operations provided by driver or device (platform_data)
+ * @dirty_lock: Protects dirty_lines_start and dirty_lines_end
+ * @dirty_lines_start: Where to begin updating display
+ * @dirty_lines_end: Where to end updating display
+ * @gpio.reset: GPIO used to reset display
+ * @gpio.dc: Data/Command signal, also known as RS
+ * @gpio.rd: Read latching signal
+ * @gpio.wr: Write latching signal
+ * @gpio.latch: Bus latch signal, eg. 16->8 bit bus latch
+ * @gpio.cs: LCD Chip Select with parallel interface bus
+ * @gpio.db[16]: Parallel databus
+ * @gpio.led[16]: Led control signals
+ * @gpio.aux[16]: Auxillary signals, not used by core
+ * @init_sequence: Pointer to LCD initialization array
+ * @gamma.lock: Mutex for Gamma curve locking
+ * @gamma.curves: Pointer to Gamma curve array
+ * @gamma.num_values: Number of values per Gamma curve
+ * @gamma.num_curves: Number of Gamma curves
+ * @debug: Pointer to debug value
+ * @current_debug:
+ * @first_update_done: Used to only time the first display update
+ * @update_time: Used to calculate 'fps' in debug output
+ * @bgr: BGR mode/\n
+ * @extra: Extra info needed by driver
+ */
+struct fbtft_par {
+	struct spi_device *spi;
+	struct platform_device *pdev;
+	struct fb_info *info;
+	struct fbtft_platform_data *pdata;
+	u16 *ssbuf;
+	u32 pseudo_palette[16];
+	struct {
+		void *buf;
+		dma_addr_t dma;
+		size_t len;
+	} txbuf;
+	u8 *buf;
+	u8 startbyte;
+	struct fbtft_ops fbtftops;
+	spinlock_t dirty_lock;
+	unsigned dirty_lines_start;
+	unsigned dirty_lines_end;
+	struct {
+		int reset;
+		int dc;
+		int rd;
+		int wr;
+		int latch;
+		int cs;
+		int db[16];
+		int led[16];
+		int aux[16];
+	} gpio;
+	int *init_sequence;
+	struct {
+		struct mutex lock;
+		unsigned long *curves;
+		int num_values;
+		int num_curves;
+	} gamma;
+	unsigned long debug;
+	bool first_update_done;
+	struct timespec update_time;
+	bool bgr;
+	void *extra;
+};
+
+#define NUMARGS(...)  (sizeof((int[]){__VA_ARGS__})/sizeof(int))
+
+#define write_reg(par, ...)                                              \
+do {                                                                     \
+	par->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__); \
+} while (0)
+
+/* fbtft-core.c */
+extern void fbtft_dbg_hex(const struct device *dev,
+	int groupsize, void *buf, size_t len, const char *fmt, ...);
+extern struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
+	struct device *dev);
+extern void fbtft_framebuffer_release(struct fb_info *info);
+extern int fbtft_register_framebuffer(struct fb_info *fb_info);
+extern int fbtft_unregister_framebuffer(struct fb_info *fb_info);
+extern void fbtft_register_backlight(struct fbtft_par *par);
+extern void fbtft_unregister_backlight(struct fbtft_par *par);
+extern int fbtft_init_display(struct fbtft_par *par);
+extern int fbtft_probe_common(struct fbtft_display *display,
+	struct spi_device *sdev, struct platform_device *pdev);
+extern int fbtft_remove_common(struct device *dev, struct fb_info *info);
+
+/* fbtft-io.c */
+extern int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_spi_emulate_9(struct fbtft_par *par,
+	void *buf, size_t len);
+extern int fbtft_read_spi(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_gpio8_wr(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_gpio16_wr(struct fbtft_par *par, void *buf, size_t len);
+extern int fbtft_write_gpio16_wr_latched(struct fbtft_par *par,
+	void *buf, size_t len);
+
+/* fbtft-bus.c */
+extern int fbtft_write_vmem8_bus8(struct fbtft_par *par, size_t offset, size_t len);
+extern int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len);
+extern int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len);
+extern int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len);
+extern void fbtft_write_reg8_bus8(struct fbtft_par *par, int len, ...);
+extern void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...);
+extern void fbtft_write_reg16_bus8(struct fbtft_par *par, int len, ...);
+extern void fbtft_write_reg16_bus16(struct fbtft_par *par, int len, ...);
+
+
+#define FBTFT_REGISTER_DRIVER(_name, _compatible, _display)                \
+									   \
+static int fbtft_driver_probe_spi(struct spi_device *spi)                  \
+{                                                                          \
+	return fbtft_probe_common(_display, spi, NULL);                    \
+}                                                                          \
+									   \
+static int fbtft_driver_remove_spi(struct spi_device *spi)                 \
+{                                                                          \
+	struct fb_info *info = spi_get_drvdata(spi);                       \
+									   \
+	return fbtft_remove_common(&spi->dev, info);                       \
+}                                                                          \
+									   \
+static int fbtft_driver_probe_pdev(struct platform_device *pdev)           \
+{                                                                          \
+	return fbtft_probe_common(_display, NULL, pdev);                   \
+}                                                                          \
+									   \
+static int fbtft_driver_remove_pdev(struct platform_device *pdev)          \
+{                                                                          \
+	struct fb_info *info = platform_get_drvdata(pdev);                 \
+									   \
+	return fbtft_remove_common(&pdev->dev, info);                      \
+}                                                                          \
+									   \
+static const struct of_device_id dt_ids[] = {                              \
+        { .compatible = _compatible },                                     \
+        {},                                                                \
+};                                                                         \
+									   \
+MODULE_DEVICE_TABLE(of, dt_ids);                                           \
+									   \
+									   \
+static struct spi_driver fbtft_driver_spi_driver = {                       \
+	.driver = {                                                        \
+		.name   = _name,                                           \
+		.owner  = THIS_MODULE,                                     \
+                .of_match_table = of_match_ptr(dt_ids),                    \
+	},                                                                 \
+	.probe  = fbtft_driver_probe_spi,                                  \
+	.remove = fbtft_driver_remove_spi,                                 \
+};                                                                         \
+									   \
+static struct platform_driver fbtft_driver_platform_driver = {             \
+	.driver = {                                                        \
+		.name   = _name,                                           \
+		.owner  = THIS_MODULE,                                     \
+                .of_match_table = of_match_ptr(dt_ids),                    \
+	},                                                                 \
+	.probe  = fbtft_driver_probe_pdev,                                 \
+	.remove = fbtft_driver_remove_pdev,                                \
+};                                                                         \
+									   \
+static int __init fbtft_driver_module_init(void)                           \
+{                                                                          \
+	int ret;                                                           \
+									   \
+	ret = spi_register_driver(&fbtft_driver_spi_driver);               \
+	if (ret < 0)                                                       \
+		return ret;                                                \
+	return platform_driver_register(&fbtft_driver_platform_driver);    \
+}                                                                          \
+									   \
+static void __exit fbtft_driver_module_exit(void)                          \
+{                                                                          \
+	spi_unregister_driver(&fbtft_driver_spi_driver);                   \
+	platform_driver_unregister(&fbtft_driver_platform_driver);         \
+}                                                                          \
+									   \
+module_init(fbtft_driver_module_init);                                     \
+module_exit(fbtft_driver_module_exit);
+
+
+/* Debug macros */
+
+/* shorthand debug levels */
+#define DEBUG_LEVEL_1	DEBUG_REQUEST_GPIOS
+#define DEBUG_LEVEL_2	(DEBUG_LEVEL_1 | DEBUG_DRIVER_INIT_FUNCTIONS | DEBUG_TIME_FIRST_UPDATE)
+#define DEBUG_LEVEL_3	(DEBUG_LEVEL_2 | DEBUG_RESET | DEBUG_INIT_DISPLAY | DEBUG_BLANK | DEBUG_REQUEST_GPIOS | DEBUG_FREE_GPIOS | DEBUG_VERIFY_GPIOS | DEBUG_BACKLIGHT | DEBUG_SYSFS)
+#define DEBUG_LEVEL_4	(DEBUG_LEVEL_2 | DEBUG_FB_READ | DEBUG_FB_WRITE | DEBUG_FB_FILLRECT | DEBUG_FB_COPYAREA | DEBUG_FB_IMAGEBLIT | DEBUG_FB_BLANK)
+#define DEBUG_LEVEL_5	(DEBUG_LEVEL_3 | DEBUG_UPDATE_DISPLAY)
+#define DEBUG_LEVEL_6	(DEBUG_LEVEL_4 | DEBUG_LEVEL_5)
+#define DEBUG_LEVEL_7	0xFFFFFFFF
+
+#define DEBUG_DRIVER_INIT_FUNCTIONS (1<<3)
+#define DEBUG_TIME_FIRST_UPDATE     (1<<4)
+#define DEBUG_TIME_EACH_UPDATE      (1<<5)
+#define DEBUG_DEFERRED_IO           (1<<6)
+#define DEBUG_FBTFT_INIT_FUNCTIONS  (1<<7)
+
+/* fbops */
+#define DEBUG_FB_READ               (1<<8)
+#define DEBUG_FB_WRITE              (1<<9)
+#define DEBUG_FB_FILLRECT           (1<<10)
+#define DEBUG_FB_COPYAREA           (1<<11)
+#define DEBUG_FB_IMAGEBLIT          (1<<12)
+#define DEBUG_FB_SETCOLREG          (1<<13)
+#define DEBUG_FB_BLANK              (1<<14)
+
+#define DEBUG_SYSFS                 (1<<16)
+
+/* fbtftops */
+#define DEBUG_BACKLIGHT             (1<<17)
+#define DEBUG_READ                  (1<<18)
+#define DEBUG_WRITE                 (1<<19)
+#define DEBUG_WRITE_VMEM            (1<<20)
+#define DEBUG_WRITE_REGISTER        (1<<21)
+#define DEBUG_SET_ADDR_WIN          (1<<22)
+#define DEBUG_RESET                 (1<<23)
+#define DEBUG_MKDIRTY               (1<<24)
+#define DEBUG_UPDATE_DISPLAY        (1<<25)
+#define DEBUG_INIT_DISPLAY          (1<<26)
+#define DEBUG_BLANK                 (1<<27)
+#define DEBUG_REQUEST_GPIOS         (1<<28)
+#define DEBUG_FREE_GPIOS            (1<<29)
+#define DEBUG_REQUEST_GPIOS_MATCH   (1<<30)
+#define DEBUG_VERIFY_GPIOS          (1<<31)
+
+
+#define fbtft_init_dbg(dev, format, arg...)                  \
+do {                                                         \
+	if (unlikely((dev)->platform_data &&                 \
+	    (((struct fbtft_platform_data *)(dev)->platform_data)->display.debug & DEBUG_DRIVER_INIT_FUNCTIONS))) \
+		dev_info(dev, format, ##arg);                \
+} while (0)
+
+#define fbtft_par_dbg(level, par, format, arg...)            \
+do {                                                         \
+	if (unlikely(par->debug & level))                    \
+		dev_info(par->info->device, format, ##arg);  \
+} while (0)
+
+#define fbtft_dev_dbg(level, par, dev, format, arg...)       \
+do {                                                         \
+	if (unlikely(par->debug & level))                    \
+		dev_info(dev, format, ##arg);                \
+} while (0)
+
+#define fbtft_par_dbg_hex(level, par, dev, type, buf, num, format, arg...) \
+do {                                                                       \
+	if (unlikely(par->debug & level))                                  \
+		fbtft_dbg_hex(dev, sizeof(type), buf, num * sizeof(type), format, ##arg); \
+} while (0)
+
+#endif /* __LINUX_FBTFT_H */
diff --git a/drivers/staging/fbtft/fbtft_device.c b/drivers/staging/fbtft/fbtft_device.c
new file mode 100644
index 0000000..b9f4c30
--- /dev/null
+++ b/drivers/staging/fbtft/fbtft_device.c
@@ -0,0 +1,1444 @@
+/*
+ *
+ * Copyright (C) 2013, Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+
+#include "fbtft.h"
+
+#define DRVNAME "fbtft_device"
+
+#define MAX_GPIOS 32
+
+struct spi_device *spi_device;
+struct platform_device *p_device;
+
+static char *name;
+module_param(name, charp, 0);
+MODULE_PARM_DESC(name, "Devicename (required). " \
+"name=list => list all supported devices.");
+
+static unsigned rotate;
+module_param(rotate, uint, 0);
+MODULE_PARM_DESC(rotate,
+"Angle to rotate display counter clockwise: 0, 90, 180, 270");
+
+static unsigned busnum;
+module_param(busnum, uint, 0);
+MODULE_PARM_DESC(busnum, "SPI bus number (default=0)");
+
+static unsigned cs;
+module_param(cs, uint, 0);
+MODULE_PARM_DESC(cs, "SPI chip select (default=0)");
+
+static unsigned speed;
+module_param(speed, uint, 0);
+MODULE_PARM_DESC(speed, "SPI speed (override device default)");
+
+static int mode = -1;
+module_param(mode, int, 0);
+MODULE_PARM_DESC(mode, "SPI mode (override device default)");
+
+static char *gpios;
+module_param(gpios, charp, 0);
+MODULE_PARM_DESC(gpios,
+"List of gpios. Comma separated with the form: reset:23,dc:24 " \
+"(when overriding the default, all gpios must be specified)");
+
+static unsigned fps;
+module_param(fps, uint, 0);
+MODULE_PARM_DESC(fps, "Frames per second (override driver default)");
+
+static char *gamma;
+module_param(gamma, charp, 0);
+MODULE_PARM_DESC(gamma,
+"String representation of Gamma Curve(s). Driver specific.");
+
+static int txbuflen;
+module_param(txbuflen, int, 0);
+MODULE_PARM_DESC(txbuflen, "txbuflen (override driver default)");
+
+static int bgr = -1;
+module_param(bgr, int, 0);
+MODULE_PARM_DESC(bgr,
+"BGR bit (supported by some drivers).");
+
+static unsigned startbyte;
+module_param(startbyte, uint, 0);
+MODULE_PARM_DESC(startbyte, "Sets the Start byte used by some SPI displays.");
+
+static bool custom;
+module_param(custom, bool, 0);
+MODULE_PARM_DESC(custom, "Add a custom display device. " \
+"Use speed= argument to make it a SPI device, else platform_device");
+
+static unsigned width;
+module_param(width, uint, 0);
+MODULE_PARM_DESC(width, "Display width, used with the custom argument");
+
+static unsigned height;
+module_param(height, uint, 0);
+MODULE_PARM_DESC(height, "Display height, used with the custom argument");
+
+static unsigned buswidth = 8;
+module_param(buswidth, uint, 0);
+MODULE_PARM_DESC(buswidth, "Display bus width, used with the custom argument");
+
+static int init[FBTFT_MAX_INIT_SEQUENCE];
+static int init_num;
+module_param_array(init, int, &init_num, 0);
+MODULE_PARM_DESC(init, "Init sequence, used with the custom argument");
+
+static unsigned long debug;
+module_param(debug, ulong , 0);
+MODULE_PARM_DESC(debug,
+"level: 0-7 (the remaining 29 bits is for advanced usage)");
+
+static unsigned verbose = 3;
+module_param(verbose, uint, 0);
+MODULE_PARM_DESC(verbose,
+"0 silent, >0 show gpios, >1 show devices, >2 show devices before (default=3)");
+
+
+struct fbtft_device_display {
+	char *name;
+	struct spi_board_info *spi;
+	struct platform_device *pdev;
+};
+
+static void fbtft_device_pdev_release(struct device *dev);
+
+static int write_gpio16_wr_slow(struct fbtft_par *par, void *buf, size_t len);
+static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par,
+	int xs, int ys, int xe, int ye);
+
+#define ADAFRUIT18_GAMMA \
+		"02 1c 07 12 37 32 29 2d 29 25 2B 39 00 01 03 10\n" \
+		"03 1d 07 06 2E 2C 29 2D 2E 2E 37 3F 00 00 02 10"
+
+static int hy28b_init_sequence[] = {
+	-1,0x00e7,0x0010,-1,0x0000,0x0001,-1,0x0001,0x0100,-1,0x0002,0x0700,
+	-1,0x0003,0x1030,-1,0x0004,0x0000,-1,0x0008,0x0207,-1,0x0009,0x0000,
+	-1,0x000a,0x0000,-1,0x000c,0x0001,-1,0x000d,0x0000,-1,0x000f,0x0000,
+	-1,0x0010,0x0000,-1,0x0011,0x0007,-1,0x0012,0x0000,-1,0x0013,0x0000,
+	-2,50,-1,0x0010,0x1590,-1,0x0011,0x0227,-2,50,-1,0x0012,0x009c,-2,50,
+	-1,0x0013,0x1900,-1,0x0029,0x0023,-1,0x002b,0x000e,-2,50,
+	-1,0x0020,0x0000,-1,0x0021,0x0000,-2,50,-1,0x0050,0x0000,
+	-1,0x0051,0x00ef,-1,0x0052,0x0000,-1,0x0053,0x013f,-1,0x0060,0xa700,
+	-1,0x0061,0x0001,-1,0x006a,0x0000,-1,0x0080,0x0000,-1,0x0081,0x0000,
+	-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000,-1,0x0085,0x0000,
+	-1,0x0090,0x0010,-1,0x0092,0x0000,-1,0x0093,0x0003,-1,0x0095,0x0110,
+	-1,0x0097,0x0000,-1,0x0098,0x0000,-1,0x0007,0x0133,-1,0x0020,0x0000,
+	-1,0x0021,0x0000,-2,100,-3 };
+
+#define HY28B_GAMMA \
+	"04 1F 4 7 7 0 7 7 6 0\n" \
+	"0F 00 1 7 4 0 0 0 6 7"
+
+static int pitft_init_sequence[] = {
+	-1,0x01,-2,5,-1,0x28,-1,0xEF,0x03,0x80,0x02,-1,0xCF,0x00,0xC1,0x30,
+	-1,0xED,0x64,0x03,0x12,0x81,-1,0xE8,0x85,0x00,0x78,
+	-1,0xCB,0x39,0x2C,0x00,0x34,0x02,-1,0xF7,0x20,-1,0xEA,0x00,0x00,
+	-1,0xC0,0x23,-1,0xC1,0x10,-1,0xC5,0x3e,0x28,-1,0xC7,0x86,-1,0x3A,0x55,
+	-1,0xB1,0x00,0x18,-1,0xB6,0x08,0x82,0x27,-1,0xF2,0x00,-1,0x26,0x01,
+	-1,0xE0,0x0F,0x31,0x2B,0x0C,0x0E,0x08,0x4E,0xF1,0x37,0x07,0x10,0x03,
+	0x0E,0x09,0x00,-1,0xE1,0x00,0x0E,0x14,0x03,0x11,0x07,0x31,0xC1,0x48,
+	0x08,0x0F,0x0C,0x31,0x36,0x0F,-1,0x11,-2,100,-1,0x29,-2,20,-3 };
+
+static int waveshare32b_init_sequence[] = {
+	-1,0xCB,0x39,0x2C,0x00,0x34,0x02,-1,0xCF,0x00,0xC1,0x30,
+	-1,0xE8,0x85,0x00,0x78,-1,0xEA,0x00,0x00,-1,0xED,0x64,0x03,0x12,0x81,
+	-1,0xF7,0x20,-1,0xC0,0x23,-1,0xC1,0x10,-1,0xC5,0x3e,0x28,-1,0xC7,0x86,
+	-1,0x36,0x28,-1,0x3A,0x55,-1,0xB1,0x00,0x18,-1,0xB6,0x08,0x82,0x27,
+	-1,0xF2,0x00,-1,0x26,0x01,
+	-1,0xE0,0x0F,0x31,0x2B,0x0C,0x0E,0x08,0x4E,0xF1,0x37,0x07,0x10,0x03,0x0E,0x09,0x00,
+	-1,0xE1,0x00,0x0E,0x14,0x03,0x11,0x07,0x31,0xC1,0x48,0x08,0x0F,0x0C,0x31,0x36,0x0F,
+	-1,0x11,-2,120,-1,0x29,-1,0x2c,-3 };
+
+/* Supported displays in alphabetical order */
+static struct fbtft_device_display displays[] = {
+	{
+		.name = "adafruit18",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_st7735r",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+				.gamma = ADAFRUIT18_GAMMA,
+			}
+		}
+	}, {
+		.name = "adafruit18_green",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_st7735r",
+			.max_speed_hz = 4000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.fbtftops.set_addr_win = \
+					    adafruit18_green_tab_set_addr_win,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+				.gamma = ADAFRUIT18_GAMMA,
+			}
+		}
+	}, {
+		.name = "adafruit22",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_hx8340bn",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 9,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "adafruit22a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9340",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "adafruit28",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "adafruit13m",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1306",
+			.max_speed_hz = 16000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "agm1264k-fl",
+		.pdev = &(struct platform_device) {
+			.name = "fb_agm1264k-fl",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = FBTFT_ONBOARD_BACKLIGHT,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+			}
+		}
+	}, {
+		.name = "dogs102",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_uc1701",
+			.max_speed_hz = 8000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 13 },
+					{ "dc", 6 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "er_tftm050_2",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ra8875",
+			.max_speed_hz = 5000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.width = 480,
+					.height = 272,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "er_tftm070_5",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ra8875",
+			.max_speed_hz = 5000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.width = 800,
+					.height = 480,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "flexfb",
+		.spi = &(struct spi_board_info) {
+			.modalias = "flexfb",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "flexpfb",
+		.pdev = &(struct platform_device) {
+			.name = "flexpfb",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 17 },
+					{ "dc", 1 },
+					{ "wr", 0 },
+					{ "cs", 21 },
+					{ "db00", 9 },
+					{ "db01", 11 },
+					{ "db02", 18 },
+					{ "db03", 23 },
+					{ "db04", 24 },
+					{ "db05", 25 },
+					{ "db06", 8 },
+					{ "db07", 7 },
+					{ "led", 4 },
+					{},
+				},
+			},
+			}
+		}
+	}, {
+		.name = "freetronicsoled128",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1351",
+			.max_speed_hz = 20000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = FBTFT_ONBOARD_BACKLIGHT,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "hx8353d",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_hx8353d",
+			.max_speed_hz = 16000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "hy28a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9320",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.startbyte = 0b01110000,
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "hy28b",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9325",
+			.max_speed_hz = 48000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.init_sequence = hy28b_init_sequence,
+				},
+				.startbyte = 0b01110000,
+				.bgr = true,
+				.fps= 50,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 18 },
+					{},
+				},
+				.gamma = HY28B_GAMMA,
+			}
+		}
+	}, {
+		.name = "ili9481",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9481",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.regwidth = 16,
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 22 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "itdb24",
+		.pdev = &(struct platform_device) {
+			.name = "fb_s6d1121",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = false,
+				.gpios = (const struct fbtft_gpio []) {
+					/* Wiring for LCD adapter kit */
+					{ "reset", 7 },
+					{ "dc", 0 }, 	/* rev 2: 2 */
+					{ "wr", 1 }, 	/* rev 2: 3 */
+					{ "cs", 8 },
+					{ "db00", 17 },
+					{ "db01", 18 },
+					{ "db02", 21 }, /* rev 2: 27 */
+					{ "db03", 22 },
+					{ "db04", 23 },
+					{ "db05", 24 },
+					{ "db06", 25 },
+					{ "db07", 4 },
+					{}
+				},
+			},
+			}
+		}
+	}, {
+		.name = "itdb28",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ili9325",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+			}
+		}
+	}, {
+		.name = "itdb28_spi",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9325",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "mi0283qt-2",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_hx8347d",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.startbyte = 0b01110000,
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "mi0283qt-9a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 9,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "mi0283qt-v2",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_watterott",
+			.max_speed_hz = 4000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "nokia3310",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_pcd8544",
+			.max_speed_hz = 400000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "nokia3310a",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_tls8204",
+			.max_speed_hz = 1000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "piscreen",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9486",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.regwidth = 16,
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 22 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "pitft",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9340",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.chip_select = 0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.init_sequence = pitft_init_sequence,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "pioled",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1351",
+			.max_speed_hz = 20000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+				.gamma =	"0 2 2 2 2 2 2 2 " \
+						"2 2 2 2 2 2 2 2 " \
+						"2 2 2 2 2 2 2 2 " \
+						"2 2 2 2 2 2 2 3 " \
+						"3 3 3 3 3 3 3 3 " \
+						"3 3 3 3 3 3 3 3 " \
+						"3 3 3 4 4 4 4 4 " \
+						"4 4 4 4 4 4 4"
+			}
+		}
+	}, {
+		.name = "rpi-display",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 23 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "s6d02a1",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_s6d02a1",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 23 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "sainsmart18",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_st7735r",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "sainsmart32",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ssd1289",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 16,
+					.txbuflen = -2, /* disable buffer */
+					.backlight = 1,
+					.fbtftops.write = write_gpio16_wr_slow,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		}
+	}, {
+		.name = "sainsmart32_fast",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ssd1289",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 16,
+					.txbuflen = -2, /* disable buffer */
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		}
+	}, {
+		.name = "sainsmart32_latched",
+		.pdev = &(struct platform_device) {
+			.name = "fb_ssd1289",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 16,
+					.txbuflen = -2, /* disable buffer */
+					.backlight = 1,
+					.fbtftops.write = \
+						fbtft_write_gpio16_wr_latched,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		}
+	}, {
+		.name = "sainsmart32_spi",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1289",
+			.max_speed_hz = 16000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "spidev",
+		.spi = &(struct spi_board_info) {
+			.modalias = "spidev",
+			.max_speed_hz = 500000,
+			.bus_num = 0,
+			.chip_select = 0,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "ssd1331",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ssd1331",
+			.max_speed_hz = 20000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tinylcd35",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_tinylcd",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tm022hdh26",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9341",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 25 },
+					{ "dc", 24 },
+					{ "led", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tontec35_9481", /* boards before 02 July 2014 */
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9481",
+			.max_speed_hz = 128000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 15 },
+					{ "dc", 25 },
+					{ "led_", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "tontec35_9486", /* boards after 02 July 2014 */
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9486",
+			.max_speed_hz = 128000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 15 },
+					{ "dc", 25 },
+					{ "led_", 18 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "upd161704",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_upd161704",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "waveshare32b",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_ili9340",
+			.max_speed_hz = 48000000,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+					.backlight = 1,
+					.init_sequence = waveshare32b_init_sequence,
+				},
+				.bgr = true,
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 27 },
+					{ "dc", 22 },
+					{},
+				},
+			}
+		}
+	}, {
+		.name = "waveshare22",
+		.spi = &(struct spi_board_info) {
+			.modalias = "fb_bd663474",
+			.max_speed_hz = 32000000,
+			.mode = SPI_MODE_3,
+			.platform_data = &(struct fbtft_platform_data) {
+				.display = {
+					.buswidth = 8,
+				},
+				.gpios = (const struct fbtft_gpio []) {
+					{ "reset", 24 },
+					{ "dc", 25 },
+					{},
+				},
+			}
+		}
+	}, {
+		/* This should be the last item.
+		   Used with the custom argument */
+		.name = "",
+		.spi = &(struct spi_board_info) {
+			.modalias = "",
+			.max_speed_hz = 0,
+			.mode = SPI_MODE_0,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			}
+		},
+		.pdev = &(struct platform_device) {
+			.name = "",
+			.id = 0,
+			.dev = {
+			.release = fbtft_device_pdev_release,
+			.platform_data = &(struct fbtft_platform_data) {
+				.gpios = (const struct fbtft_gpio []) {
+					{},
+				},
+			},
+		},
+		},
+	}
+};
+
+static int write_gpio16_wr_slow(struct fbtft_par *par, void *buf, size_t len)
+{
+	u16 data;
+	int i;
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+	static u16 prev_data;
+#endif
+
+	fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len,
+		"%s(len=%d): ", __func__, len);
+
+	while (len) {
+		data = *(u16 *) buf;
+
+		/* Start writing by pulling down /WR */
+		gpio_set_value(par->gpio.wr, 0);
+
+		/* Set data */
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		if (data == prev_data) {
+			gpio_set_value(par->gpio.wr, 0); /* used as delay */
+		} else {
+			for (i = 0; i < 16; i++) {
+				if ((data & 1) != (prev_data & 1))
+					gpio_set_value(par->gpio.db[i],
+								(data & 1));
+				data >>= 1;
+				prev_data >>= 1;
+			}
+		}
+#else
+		for (i = 0; i < 16; i++) {
+			gpio_set_value(par->gpio.db[i], (data & 1));
+			data >>= 1;
+		}
+#endif
+
+		/* Pullup /WR */
+		gpio_set_value(par->gpio.wr, 1);
+
+#ifndef DO_NOT_OPTIMIZE_FBTFT_WRITE_GPIO
+		prev_data = *(u16 *) buf;
+#endif
+		buf += 2;
+		len -= 2;
+	}
+
+	return 0;
+}
+
+static void adafruit18_green_tab_set_addr_win(struct fbtft_par *par,
+						int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
+		"%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	write_reg(par, 0x2A, 0, xs + 2, 0, xe + 2);
+	write_reg(par, 0x2B, 0, ys + 1, 0, ye + 1);
+	write_reg(par, 0x2C);
+}
+
+/* used if gpios parameter is present */
+static struct fbtft_gpio fbtft_device_param_gpios[MAX_GPIOS+1] = { };
+
+static void fbtft_device_pdev_release(struct device *dev)
+{
+/* Needed to silence this message:
+Device 'xxx' does not have a release() function, it is broken and must be fixed
+*/
+}
+
+static int spi_device_found(struct device *dev, void *data)
+{
+	struct spi_device *spi = container_of(dev, struct spi_device, dev);
+
+	pr_info(DRVNAME":      %s %s %dkHz %d bits mode=0x%02X\n",
+		spi->modalias, dev_name(dev), spi->max_speed_hz/1000,
+		spi->bits_per_word, spi->mode);
+
+	return 0;
+}
+
+static void pr_spi_devices(void)
+{
+	pr_info(DRVNAME":  SPI devices registered:\n");
+	bus_for_each_dev(&spi_bus_type, NULL, NULL, spi_device_found);
+}
+
+static int p_device_found(struct device *dev, void *data)
+{
+	struct platform_device
+	*pdev = container_of(dev, struct platform_device, dev);
+
+	if (strstr(pdev->name, "fb"))
+		pr_info(DRVNAME":      %s id=%d pdata? %s\n",
+				pdev->name, pdev->id,
+				pdev->dev.platform_data ? "yes" : "no");
+
+	return 0;
+}
+
+static void pr_p_devices(void)
+{
+	pr_info(DRVNAME":  'fb' Platform devices registered:\n");
+	bus_for_each_dev(&platform_bus_type, NULL, NULL, p_device_found);
+}
+
+#ifdef MODULE
+static void fbtft_device_spi_delete(struct spi_master *master, unsigned cs)
+{
+	struct device *dev;
+	char str[32];
+
+	snprintf(str, sizeof(str), "%s.%u", dev_name(&master->dev), cs);
+
+	dev = bus_find_device_by_name(&spi_bus_type, NULL, str);
+	if (dev) {
+		if (verbose)
+			pr_info(DRVNAME": Deleting %s\n", str);
+		device_del(dev);
+	}
+}
+
+static int fbtft_device_spi_device_register(struct spi_board_info *spi)
+{
+	struct spi_master *master;
+
+	master = spi_busnum_to_master(spi->bus_num);
+	if (!master) {
+		pr_err(DRVNAME ":  spi_busnum_to_master(%d) returned NULL\n",
+								spi->bus_num);
+		return -EINVAL;
+	}
+	/* make sure it's available */
+	fbtft_device_spi_delete(master, spi->chip_select);
+	spi_device = spi_new_device(master, spi);
+	put_device(&master->dev);
+	if (!spi_device) {
+		pr_err(DRVNAME ":    spi_new_device() returned NULL\n");
+		return -EPERM;
+	}
+	return 0;
+}
+#else
+static int fbtft_device_spi_device_register(struct spi_board_info *spi)
+{
+	return spi_register_board_info(spi, 1);
+}
+#endif
+
+static int __init fbtft_device_init(void)
+{
+	struct spi_board_info *spi = NULL;
+	struct fbtft_platform_data *pdata;
+	const struct fbtft_gpio *gpio = NULL;
+	char *p_gpio, *p_name, *p_num;
+	bool found = false;
+	int i = 0;
+	long val;
+	int ret = 0;
+
+	pr_debug("\n\n"DRVNAME": init\n");
+
+	if (name == NULL) {
+#ifdef MODULE
+		pr_err(DRVNAME":  missing module parameter: 'name'\n");
+		return -EINVAL;
+#else
+		return 0;
+#endif
+	}
+
+	if (init_num > FBTFT_MAX_INIT_SEQUENCE) {
+		pr_err(DRVNAME \
+			":  init parameter: exceeded max array size: %d\n",
+			FBTFT_MAX_INIT_SEQUENCE);
+		return -EINVAL;
+	}
+
+	/* parse module parameter: gpios */
+	while ((p_gpio = strsep(&gpios, ","))) {
+		if (strchr(p_gpio, ':') == NULL) {
+			pr_err(DRVNAME \
+				":  error: missing ':' in gpios parameter: %s\n",
+				p_gpio);
+			return -EINVAL;
+		}
+		p_num = p_gpio;
+		p_name = strsep(&p_num, ":");
+		if (p_name == NULL || p_num == NULL) {
+			pr_err(DRVNAME \
+				":  something bad happened parsing gpios parameter: %s\n",
+				p_gpio);
+			return -EINVAL;
+		}
+		ret = kstrtol(p_num, 10, &val);
+		if (ret) {
+			pr_err(DRVNAME \
+				":  could not parse number in gpios parameter: %s:%s\n",
+				p_name, p_num);
+			return -EINVAL;
+		}
+		strcpy(fbtft_device_param_gpios[i].name, p_name);
+		fbtft_device_param_gpios[i++].gpio = (int) val;
+		if (i == MAX_GPIOS) {
+			pr_err(DRVNAME \
+				":  gpios parameter: exceeded max array size: %d\n",
+				MAX_GPIOS);
+			return -EINVAL;
+		}
+	}
+	if (fbtft_device_param_gpios[0].name[0])
+		gpio = fbtft_device_param_gpios;
+
+	if (verbose > 2)
+		pr_spi_devices(); /* print list of registered SPI devices */
+
+	if (verbose > 2)
+		pr_p_devices(); /* print list of 'fb' platform devices */
+
+	pr_debug(DRVNAME":  name='%s', busnum=%d, cs=%d\n", name, busnum, cs);
+
+	if (rotate > 0 && rotate < 4) {
+		rotate = (4 - rotate) * 90;
+		pr_warn("argument 'rotate' should be an angle. Values 1-3 is deprecated. Setting it to %d.\n",
+			rotate);
+	}
+	if (rotate != 0 && rotate != 90 && rotate != 180 && rotate != 270) {
+		pr_warn("argument 'rotate' illegal value: %d. Setting it to 0.\n",
+			rotate);
+		rotate = 0;
+	}
+
+	/* name=list lists all supported displays */
+	if (strncmp(name, "list", 32) == 0) {
+		pr_info(DRVNAME":  Supported displays:\n");
+
+		for (i = 0; i < ARRAY_SIZE(displays); i++)
+			pr_info(DRVNAME":      %s\n", displays[i].name);
+		return -ECANCELED;
+	}
+
+	if (custom) {
+		i = ARRAY_SIZE(displays) - 1;
+		displays[i].name = name;
+		if (speed == 0) {
+			displays[i].pdev->name = name;
+			displays[i].spi = NULL;
+		} else {
+			strncpy(displays[i].spi->modalias, name, SPI_NAME_SIZE);
+			displays[i].pdev = NULL;
+		}
+	}
+
+	for (i = 0; i < ARRAY_SIZE(displays); i++) {
+		if (strncmp(name, displays[i].name, 32) == 0) {
+			if (displays[i].spi) {
+				spi = displays[i].spi;
+				spi->chip_select = cs;
+				spi->bus_num = busnum;
+				if (speed)
+					spi->max_speed_hz = speed;
+				if (mode != -1)
+					spi->mode = mode;
+				pdata = (void *)spi->platform_data;
+			} else if (displays[i].pdev) {
+				p_device = displays[i].pdev;
+				pdata = p_device->dev.platform_data;
+			} else {
+				pr_err(DRVNAME": broken displays array\n");
+				return -EINVAL;
+			}
+
+			pdata->rotate = rotate;
+			if (bgr == 0)
+				pdata->bgr = false;
+			else if (bgr == 1)
+				pdata->bgr = true;
+			if (startbyte)
+				pdata->startbyte = startbyte;
+			if (gamma)
+				pdata->gamma = gamma;
+			pdata->display.debug = debug;
+			if (fps)
+				pdata->fps = fps;
+			if (txbuflen)
+				pdata->txbuflen = txbuflen;
+			if (init_num)
+				pdata->display.init_sequence = init;
+			if (gpio)
+				pdata->gpios = gpio;
+			if (custom) {
+				pdata->display.width = width;
+				pdata->display.height = height;
+				pdata->display.buswidth = buswidth;
+				pdata->display.backlight = 1;
+			}
+
+			if (displays[i].spi) {
+				ret = fbtft_device_spi_device_register(spi);
+				if (ret) {
+					pr_err(DRVNAME \
+						": failed to register SPI device\n");
+					return ret;
+				}
+				found = true;
+				break;
+			} else {
+				ret = platform_device_register(p_device);
+				if (ret < 0) {
+					pr_err(DRVNAME \
+						":    platform_device_register() returned %d\n",
+						ret);
+					return ret;
+				}
+				found = true;
+				break;
+			}
+		}
+	}
+
+	if (!found) {
+		pr_err(DRVNAME":  display not supported: '%s'\n", name);
+		return -EINVAL;
+	}
+
+	if (verbose && pdata && pdata->gpios) {
+		gpio = pdata->gpios;
+		pr_info(DRVNAME":  GPIOS used by '%s':\n", name);
+		found = false;
+		while (verbose && gpio->name[0]) {
+			pr_info(DRVNAME":    '%s' = GPIO%d\n",
+				gpio->name, gpio->gpio);
+			gpio++;
+			found = true;
+		}
+		if (!found)
+			pr_info(DRVNAME":    (none)\n");
+	}
+
+	if (spi_device && (verbose > 1))
+		pr_spi_devices();
+	if (p_device && (verbose > 1))
+		pr_p_devices();
+
+	return 0;
+}
+
+static void __exit fbtft_device_exit(void)
+{
+	pr_debug(DRVNAME" - exit\n");
+
+	if (spi_device) {
+		device_del(&spi_device->dev);
+		kfree(spi_device);
+	}
+
+	if (p_device)
+		platform_device_unregister(p_device);
+
+}
+
+arch_initcall(fbtft_device_init);
+module_exit(fbtft_device_exit);
+
+MODULE_DESCRIPTION("Add a FBTFT device.");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/fbtft/flexfb.c b/drivers/staging/fbtft/flexfb.c
new file mode 100644
index 0000000..45574a0
--- /dev/null
+++ b/drivers/staging/fbtft/flexfb.c
@@ -0,0 +1,593 @@
+/*
+ * Generic FB driver for TFT LCD displays
+ *
+ * Copyright (C) 2013 Noralf Tronnes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/delay.h>
+
+#include "fbtft.h"
+
+#define DRVNAME	    "flexfb"
+
+
+static char *chip = NULL;
+module_param(chip, charp, 0);
+MODULE_PARM_DESC(chip, "LCD controller");
+
+static unsigned int width = 0;
+module_param(width, uint, 0);
+MODULE_PARM_DESC(width, "Display width");
+
+static unsigned int height = 0;
+module_param(height, uint, 0);
+MODULE_PARM_DESC(height, "Display height");
+
+static int init[512];
+static int init_num = 0;
+module_param_array(init, int, &init_num, 0);
+MODULE_PARM_DESC(init, "Init sequence");
+
+static unsigned int setaddrwin = 0;
+module_param(setaddrwin, uint, 0);
+MODULE_PARM_DESC(setaddrwin, "Which set_addr_win() implementation to use");
+
+static unsigned int buswidth = 8;
+module_param(buswidth, uint, 0);
+MODULE_PARM_DESC(buswidth, "Width of databus (default: 8)");
+
+static unsigned int regwidth = 8;
+module_param(regwidth, uint, 0);
+MODULE_PARM_DESC(regwidth, "Width of controller register (default: 8)");
+
+static bool nobacklight = false;
+module_param(nobacklight, bool, 0);
+MODULE_PARM_DESC(nobacklight, "Turn off backlight functionality.");
+
+static bool latched = false;
+module_param(latched, bool, 0);
+MODULE_PARM_DESC(latched, "Use with latched 16-bit databus");
+
+
+static int *initp = NULL;
+static int initp_num = 0;
+
+/* default init sequences */
+static int st7735r_init[] = { \
+-1,0x01,-2,150,-1,0x11,-2,500,-1,0xB1,0x01,0x2C,0x2D,-1,0xB2,0x01,0x2C,0x2D,-1,0xB3,0x01,0x2C,0x2D,0x01,0x2C,0x2D, \
+-1,0xB4,0x07,-1,0xC0,0xA2,0x02,0x84,-1,0xC1,0xC5,-1,0xC2,0x0A,0x00,-1,0xC3,0x8A,0x2A,-1,0xC4,0x8A,0xEE,-1,0xC5,0x0E, \
+-1,0x20,-1,0x36,0xC0,-1,0x3A,0x05,-1,0xE0,0x0f,0x1a,0x0f,0x18,0x2f,0x28,0x20,0x22,0x1f,0x1b,0x23,0x37,0x00,0x07,0x02,0x10, \
+-1,0xE1,0x0f,0x1b,0x0f,0x17,0x33,0x2c,0x29,0x2e,0x30,0x30,0x39,0x3f,0x00,0x07,0x03,0x10,-1,0x29,-2,100,-1,0x13,-2,10,-3 };
+
+static int ssd1289_init[] = { \
+-1,0x00,0x0001,-1,0x03,0xA8A4,-1,0x0C,0x0000,-1,0x0D,0x080C,-1,0x0E,0x2B00,-1,0x1E,0x00B7,-1,0x01,0x2B3F,-1,0x02,0x0600, \
+-1,0x10,0x0000,-1,0x11,0x6070,-1,0x05,0x0000,-1,0x06,0x0000,-1,0x16,0xEF1C,-1,0x17,0x0003,-1,0x07,0x0233,-1,0x0B,0x0000, \
+-1,0x0F,0x0000,-1,0x41,0x0000,-1,0x42,0x0000,-1,0x48,0x0000,-1,0x49,0x013F,-1,0x4A,0x0000,-1,0x4B,0x0000,-1,0x44,0xEF00, \
+-1,0x45,0x0000,-1,0x46,0x013F,-1,0x30,0x0707,-1,0x31,0x0204,-1,0x32,0x0204,-1,0x33,0x0502,-1,0x34,0x0507,-1,0x35,0x0204, \
+-1,0x36,0x0204,-1,0x37,0x0502,-1,0x3A,0x0302,-1,0x3B,0x0302,-1,0x23,0x0000,-1,0x24,0x0000,-1,0x25,0x8000,-1,0x4f,0x0000, \
+-1,0x4e,0x0000,-1,0x22,-3 };
+
+static int hx8340bn_init[] = { \
+-1,0xC1,0xFF,0x83,0x40,-1,0x11,-2,150,-1,0xCA,0x70,0x00,0xD9,-1,0xB0,0x01,0x11, \
+-1,0xC9,0x90,0x49,0x10,0x28,0x28,0x10,0x00,0x06,-2,20,-1,0xC2,0x60,0x71,0x01,0x0E,0x05,0x02,0x09,0x31,0x0A, \
+-1,0xC3,0x67,0x30,0x61,0x17,0x48,0x07,0x05,0x33,-2,10,-1,0xB5,0x35,0x20,0x45,-1,0xB4,0x33,0x25,0x4C,-2,10, \
+-1,0x3A,0x05,-1,0x29,-2,10,-3 };
+
+static int ili9225_init[] = { \
+-1,0x0001,0x011C,-1,0x0002,0x0100,-1,0x0003,0x1030,-1,0x0008,0x0808,-1,0x000C,0x0000,-1,0x000F,0x0A01,-1,0x0020,0x0000, \
+-1,0x0021,0x0000,-2,50,-1,0x0010,0x0A00,-1,0x0011,0x1038,-2,50,-1,0x0012,0x1121,-1,0x0013,0x004E,-1,0x0014,0x676F, \
+-1,0x0030,0x0000,-1,0x0031,0x00DB,-1,0x0032,0x0000,-1,0x0033,0x0000,-1,0x0034,0x00DB,-1,0x0035,0x0000,-1,0x0036,0x00AF, \
+-1,0x0037,0x0000,-1,0x0038,0x00DB,-1,0x0039,0x0000,-1,0x0050,0x0000,-1,0x0051,0x060A,-1,0x0052,0x0D0A,-1,0x0053,0x0303, \
+-1,0x0054,0x0A0D,-1,0x0055,0x0A06,-1,0x0056,0x0000,-1,0x0057,0x0303,-1,0x0058,0x0000,-1,0x0059,0x0000,-2,50, \
+-1,0x0007,0x1017,-2,50,-3 };
+
+static int ili9320_init[] = { \
+-1,0x00E5,0x8000,-1,0x0000,0x0001,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000,-1,0x0008,0x0202, \
+-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000,-1,0x0011,0x0007, \
+-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x17B0,-1,0x0011,0x0031,-2,50,-1,0x0012,0x0138,-2,50,-1,0x0013,0x1800, \
+-1,0x0029,0x0008,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000,-1,0x0031,0x0505,-1,0x0032,0x0004, \
+-1,0x0035,0x0006,-1,0x0036,0x0707,-1,0x0037,0x0105,-1,0x0038,0x0002,-1,0x0039,0x0707,-1,0x003C,0x0704,-1,0x003D,0x0807, \
+-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0x2700,-1,0x0061,0x0001,-1,0x006A,0x0000, \
+-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000,-1,0x0085,0x0000,-1,0x0090,0x0010, \
+-1,0x0092,0x0000,-1,0x0093,0x0003,-1,0x0095,0x0110,-1,0x0097,0x0000,-1,0x0098,0x0000,-1,0x0007,0x0173,-3 };
+
+static int ili9325_init[] = { \
+-1,0x00E3,0x3008,-1,0x00E7,0x0012,-1,0x00EF,0x1231,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000, \
+-1,0x0008,0x0207,-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000, \
+-1,0x0011,0x0007,-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x1690,-1,0x0011,0x0223,-2,50,-1,0x0012,0x000D,-2,50, \
+-1,0x0013,0x1200,-1,0x0029,0x000A,-1,0x002B,0x000C,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000, \
+-1,0x0031,0x0506,-1,0x0032,0x0104,-1,0x0035,0x0207,-1,0x0036,0x000F,-1,0x0037,0x0306,-1,0x0038,0x0102,-1,0x0039,0x0707, \
+-1,0x003C,0x0702,-1,0x003D,0x1604,-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0xA700, \
+-1,0x0061,0x0001,-1,0x006A,0x0000,-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000, \
+-1,0x0085,0x0000,-1,0x0090,0x0010,-1,0x0092,0x0600,-1,0x0007,0x0133,-3 };
+
+static int ili9341_init[] = { \
+-1,0x28,-2,20,-1,0xCF,0x00,0x83,0x30,-1,0xED,0x64,0x03,0x12,0x81,-1,0xE8,0x85,0x01,0x79, \
+-1,0xCB,0x39,0x2c,0x00,0x34,0x02,-1,0xF7,0x20,-1,0xEA,0x00,0x00,-1,0xC0,0x26,-1,0xC1,0x11, \
+-1,0xC5,0x35,0x3E,-1,0xC7,0xBE,-1,0xB1,0x00,0x1B,-1,0xB6,0x0a,0x82,0x27,0x00,-1,0xB7,0x07, \
+-1,0x3A,0x55,-1,0x36,0x48,-1,0x11,-2,120,-1,0x29,-2,20,-3 };
+
+static int ssd1351_init[] = { -1,0xfd,0x12,-1,0xfd,0xb1,-1,0xae,-1,0xb3,0xf1,-1,0xca,0x7f,-1,0xa0,0x74, \
+                              -1,0x15,0x00,0x7f,-1,0x75,0x00,0x7f,-1,0xa1,0x00,-1,0xa2,0x00,-1,0xb5,0x00, \
+                              -1,0xab,0x01,-1,0xb1,0x32,-1,0xb4,0xa0,0xb5,0x55,-1,0xbb,0x17,-1,0xbe,0x05, \
+                              -1,0xc1,0xc8,0x80,0xc8,-1,0xc7,0x0f,-1,0xb6,0x01,-1,0xa6,-1,0xaf,-3 };
+
+
+/* ili9320, ili9325 */
+static void flexfb_set_addr_win_1(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+	switch (par->info->var.rotate) {
+	/* R20h = Horizontal GRAM Start Address */
+	/* R21h = Vertical GRAM Start Address */
+	case 0:
+		write_reg(par, 0x0020, xs);
+		write_reg(par, 0x0021, ys);
+		break;
+	case 180:
+		write_reg(par, 0x0020, width - 1 - xs);
+		write_reg(par, 0x0021, height - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x0020, width - 1 - ys);
+		write_reg(par, 0x0021, xs);
+		break;
+	case 90:
+		write_reg(par, 0x0020, ys);
+		write_reg(par, 0x0021, height - 1 - xs);
+		break;
+	}
+	write_reg(par, 0x0022); /* Write Data to GRAM */
+}
+
+/* ssd1289 */
+static void flexfb_set_addr_win_2(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	switch (par->info->var.rotate) {
+	/* R4Eh - Set GDDRAM X address counter */
+	/* R4Fh - Set GDDRAM Y address counter */
+	case 0:
+		write_reg(par, 0x4e, xs);
+		write_reg(par, 0x4f, ys);
+		break;
+	case 180:
+		write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
+		write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
+		break;
+	case 270:
+		write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
+		write_reg(par, 0x4f, xs);
+		break;
+	case 90:
+		write_reg(par, 0x4e, ys);
+		write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
+		break;
+	}
+
+	/* R22h - RAM data write */
+	write_reg(par, 0x22, 0);
+}
+
+/* ssd1351 */
+static void set_addr_win_3(struct fbtft_par *par, int xs, int ys, int xe, int ye)
+{
+	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye);
+
+	write_reg(par, 0x15, xs, xe);
+	write_reg(par, 0x75, ys, ye);
+	write_reg(par, 0x5C);
+}
+
+static int flexfb_verify_gpios_dc(struct fbtft_par *par)
+{
+	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
+
+	if (par->gpio.dc < 0) {
+		dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int flexfb_verify_gpios_db(struct fbtft_par *par)
+{
+	int i;
+	int num_db = buswidth;
+
+	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
+
+	if (par->gpio.dc < 0) {
+		dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (par->gpio.wr < 0) {
+		dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (latched && (par->gpio.latch < 0)) {
+		dev_err(par->info->device, "Missing info about 'latch' gpio. Aborting.\n");
+		return -EINVAL;
+	}
+	if (latched)
+		num_db=buswidth/2;
+	for (i=0;i < num_db;i++) {
+		if (par->gpio.db[i] < 0) {
+			dev_err(par->info->device, "Missing info about 'db%02d' gpio. Aborting.\n", i);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static struct fbtft_display flex_display = { };
+
+static int flexfb_probe_common(struct spi_device *sdev, struct platform_device *pdev)
+{
+	struct device *dev;
+	struct fb_info *info;
+	struct fbtft_par *par;
+	int ret;
+
+	initp = init;
+	initp_num = init_num;
+
+	if (sdev)
+		dev = &sdev->dev;
+	else
+		dev = &pdev->dev;
+
+	fbtft_init_dbg(dev, "%s(%s)\n", __func__, sdev ? "'SPI device'" : "'Platform device'");
+
+	if (chip) {
+
+		if (!strcmp(chip, "st7735r")) {
+			if (!width)
+				width = 128;
+			if (!height)
+				height = 160;
+			if (init_num == 0) {
+				initp = st7735r_init;
+				initp_num = ARRAY_SIZE(st7735r_init);
+			}
+
+
+		} else if (!strcmp(chip, "hx8340bn")) {
+			if (!width)
+				width = 176;
+			if (!height)
+				height = 220;
+			setaddrwin = 0;
+			if (init_num == 0) {
+				initp = hx8340bn_init;
+				initp_num = ARRAY_SIZE(hx8340bn_init);
+			}
+
+
+		} else if (!strcmp(chip, "ili9225")) {
+			if (!width)
+				width = 176;
+			if (!height)
+				height = 220;
+			setaddrwin = 0;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ili9225_init;
+				initp_num = ARRAY_SIZE(ili9225_init);
+			}
+
+
+
+		} else if (!strcmp(chip, "ili9320")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 1;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ili9320_init;
+				initp_num = ARRAY_SIZE(ili9320_init);
+			}
+
+
+		} else if (!strcmp(chip, "ili9325")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 1;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ili9325_init;
+				initp_num = ARRAY_SIZE(ili9325_init);
+			}
+
+		} else if (!strcmp(chip, "ili9341")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 0;
+			regwidth = 8;
+			if (init_num == 0) {
+				initp = ili9341_init;
+				initp_num = ARRAY_SIZE(ili9341_init);
+			}
+
+
+		} else if (!strcmp(chip, "ssd1289")) {
+			if (!width)
+				width = 240;
+			if (!height)
+				height = 320;
+			setaddrwin = 2;
+			regwidth = 16;
+			if (init_num == 0) {
+				initp = ssd1289_init;
+				initp_num = ARRAY_SIZE(ssd1289_init);
+			}
+
+
+
+		} else if (!strcmp(chip, "ssd1351")) {
+			if (!width)
+				width = 128;
+			if (!height)
+				height = 128;
+			setaddrwin = 3;
+			if (init_num == 0) {
+				initp = ssd1351_init;
+				initp_num = ARRAY_SIZE(ssd1351_init);
+			}
+		} else {
+			dev_err(dev, "chip=%s is not supported\n", chip);
+			return -EINVAL;
+		}
+	}
+
+	if (width == 0 || height == 0) {
+		dev_err(dev, "argument(s) missing: width and height has to be set.\n");
+		return -EINVAL;
+	}
+	flex_display.width = width;
+	flex_display.height = height;
+	fbtft_init_dbg(dev, "Display resolution: %dx%d\n", width, height);
+	fbtft_init_dbg(dev, "chip = %s\n", chip ? chip : "not set");
+	fbtft_init_dbg(dev, "setaddrwin = %d\n", setaddrwin);
+	fbtft_init_dbg(dev, "regwidth = %d\n", regwidth);
+	fbtft_init_dbg(dev, "buswidth = %d\n", buswidth);
+
+	info = fbtft_framebuffer_alloc(&flex_display, dev);
+	if (!info)
+		return -ENOMEM;
+
+	par = info->par;
+	if (sdev)
+		par->spi = sdev;
+	else
+		par->pdev = pdev;
+	if (!par->init_sequence)
+		par->init_sequence = initp;
+	par->fbtftops.init_display = fbtft_init_display;
+
+	/* registerwrite functions */
+	switch (regwidth) {
+	case 8:
+		par->fbtftops.write_register = fbtft_write_reg8_bus8;
+		break;
+	case 16:
+		par->fbtftops.write_register = fbtft_write_reg16_bus8;
+		break;
+	default:
+		dev_err(dev, "argument 'regwidth': %d is not supported.\n", regwidth);
+		return -EINVAL;
+	}
+
+	/* bus functions */
+	if (sdev) {
+		par->fbtftops.write = fbtft_write_spi;
+		switch (buswidth) {
+		case 8:
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+			if (!par->startbyte)
+				par->fbtftops.verify_gpios = flexfb_verify_gpios_dc;
+			break;
+		case 9:
+			if (regwidth == 16) {
+				dev_err(dev, "argument 'regwidth': %d is not supported with buswidth=%d and SPI.\n", regwidth, buswidth);
+				return -EINVAL;
+			}
+			par->fbtftops.write_register = fbtft_write_reg8_bus9;
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus9;
+			sdev->bits_per_word=9;
+			ret = sdev->master->setup(sdev);
+			if (ret) {
+				dev_warn(dev,
+					"9-bit SPI not available, emulating using 8-bit.\n");
+				sdev->bits_per_word = 8;
+				ret = sdev->master->setup(sdev);
+				if (ret)
+					goto out_release;
+				/* allocate buffer with room for dc bits */
+				par->extra = devm_kzalloc(par->info->device,
+						par->txbuf.len + (par->txbuf.len / 8) + 8,
+						GFP_KERNEL);
+				if (!par->extra) {
+					ret = -ENOMEM;
+					goto out_release;
+				}
+				par->fbtftops.write = fbtft_write_spi_emulate_9;
+			}
+			break;
+		default:
+			dev_err(dev, "argument 'buswidth': %d is not supported with SPI.\n", buswidth);
+			return -EINVAL;
+		}
+	} else {
+		par->fbtftops.verify_gpios = flexfb_verify_gpios_db;
+		switch (buswidth) {
+		case 8:
+			par->fbtftops.write = fbtft_write_gpio8_wr;
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
+			break;
+		case 16:
+			par->fbtftops.write_register = fbtft_write_reg16_bus16;
+			if (latched)
+				par->fbtftops.write = fbtft_write_gpio16_wr_latched;
+			else
+				par->fbtftops.write = fbtft_write_gpio16_wr;
+			par->fbtftops.write_vmem = fbtft_write_vmem16_bus16;
+			break;
+		default:
+			dev_err(dev, "argument 'buswidth': %d is not supported with parallel.\n", buswidth);
+			return -EINVAL;
+		}
+	}
+
+	/* set_addr_win function */
+	switch (setaddrwin) {
+	case 0:
+		/* use default */
+		break;
+	case 1:
+		par->fbtftops.set_addr_win = flexfb_set_addr_win_1;
+		break;
+	case 2:
+		par->fbtftops.set_addr_win = flexfb_set_addr_win_2;
+		break;
+	case 3:
+		par->fbtftops.set_addr_win = set_addr_win_3;
+		break;
+	default:
+		dev_err(dev, "argument 'setaddrwin': unknown value %d.\n", setaddrwin);
+		return -EINVAL;
+	}
+
+	if (!nobacklight)
+		par->fbtftops.register_backlight = fbtft_register_backlight;
+
+	ret = fbtft_register_framebuffer(info);
+	if (ret < 0)
+		goto out_release;
+
+	return 0;
+
+out_release:
+	fbtft_framebuffer_release(info);
+
+	return ret;
+}
+
+static int flexfb_remove_common(struct device *dev, struct fb_info *info)
+{
+	struct fbtft_par *par;
+
+	if (!info)
+		return -EINVAL;
+	par = info->par;
+	if (par)
+		fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par,
+			"%s()\n", __func__);
+	fbtft_unregister_framebuffer(info);
+	fbtft_framebuffer_release(info);
+
+	return 0;
+}
+
+static int flexfb_probe_spi(struct spi_device *spi)
+{
+	return flexfb_probe_common(spi, NULL);
+}
+
+static int flexfb_remove_spi(struct spi_device *spi)
+{
+	struct fb_info *info = spi_get_drvdata(spi);
+
+	return flexfb_remove_common(&spi->dev, info);
+}
+
+static int flexfb_probe_pdev(struct platform_device *pdev)
+{
+	return flexfb_probe_common(NULL, pdev);
+}
+
+static int flexfb_remove_pdev(struct platform_device *pdev)
+{
+	struct fb_info *info = platform_get_drvdata(pdev);
+
+	return flexfb_remove_common(&pdev->dev, info);
+}
+
+static struct spi_driver flexfb_spi_driver = {
+	.driver = {
+		.name   = DRVNAME,
+		.owner  = THIS_MODULE,
+	},
+	.probe  = flexfb_probe_spi,
+	.remove = flexfb_remove_spi,
+};
+
+static const struct platform_device_id flexfb_platform_ids[] = {
+	{ "flexpfb", 0 },
+	{ },
+};
+
+static struct platform_driver flexfb_platform_driver = {
+	.driver = {
+		.name   = DRVNAME,
+		.owner  = THIS_MODULE,
+	},
+	.id_table = flexfb_platform_ids,
+	.probe  = flexfb_probe_pdev,
+	.remove = flexfb_remove_pdev,
+};
+
+static int __init flexfb_init(void)
+{
+	int ret, ret2;
+
+	ret = spi_register_driver(&flexfb_spi_driver);
+	ret2 = platform_driver_register(&flexfb_platform_driver);
+	if (ret < 0)
+		return ret;
+	return ret2;
+}
+
+static void __exit flexfb_exit(void)
+{
+	spi_unregister_driver(&flexfb_spi_driver);
+	platform_driver_unregister(&flexfb_platform_driver);
+}
+
+/* ------------------------------------------------------------------------- */
+
+module_init(flexfb_init);
+module_exit(flexfb_exit);
+
+MODULE_DESCRIPTION("Generic FB driver for TFT LCD displays");
+MODULE_AUTHOR("Noralf Tronnes");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/ft1000/ft1000-pcmcia/ft1000_hw.c b/drivers/staging/ft1000/ft1000-pcmcia/ft1000_hw.c
index d5475b7..5e0cdcf 100644
--- a/drivers/staging/ft1000/ft1000-pcmcia/ft1000_hw.c
+++ b/drivers/staging/ft1000/ft1000-pcmcia/ft1000_hw.c
@@ -172,11 +172,11 @@
 	spin_lock_irqsave(&info->dpram_lock, flags);
 	ft1000_write_reg(dev, FT1000_REG_DPRAM_ADDR, offset);
 	/* check if we want to read upper or lower 32-bit word */
-	if (Index) {
+	if (Index)
 		data = ft1000_read_reg(dev, FT1000_REG_MAG_DPDATAL);
-	} else {
+	else
 		data = ft1000_read_reg(dev, FT1000_REG_MAG_DPDATAH);
-	}
+
 	spin_unlock_irqrestore(&info->dpram_lock, flags);
 
 	return data;
@@ -570,12 +570,12 @@
 		pr_debug("hi_ho value = 0x%x\n", tempword);
 		/* Let's perform another check if ho is not detected */
 		if (tempword != ho) {
-			if (info->AsicID == ELECTRABUZZ_ID) {
+			if (info->AsicID == ELECTRABUZZ_ID)
 				tempword = ft1000_read_dpram(dev, FT1000_HI_HO);
-			}
-			else {
-				tempword = ntohs(ft1000_read_dpram_mag_16(dev, FT1000_MAG_HI_HO, FT1000_MAG_HI_HO_INDX));
-			}
+			else
+				tempword = ntohs(ft1000_read_dpram_mag_16(dev,
+							FT1000_MAG_HI_HO,
+							FT1000_MAG_HI_HO_INDX));
 		}
 		if (tempword != ho) {
 			pr_info("heartbeat failed - no ho detected\n");
@@ -686,19 +686,15 @@
 		}
 		/* Let's write hi again if fail */
 		if (tempword != hi) {
-			if (info->AsicID == ELECTRABUZZ_ID) {
+			if (info->AsicID == ELECTRABUZZ_ID)
 				ft1000_write_dpram(dev, FT1000_HI_HO, hi);
-			}
-			else {
+			else
 				ft1000_write_dpram_mag_16(dev, FT1000_MAG_HI_HO, hi_mag, FT1000_MAG_HI_HO_INDX);
-			}
 
-			if (info->AsicID == ELECTRABUZZ_ID) {
+			if (info->AsicID == ELECTRABUZZ_ID)
 				tempword = ft1000_read_dpram(dev, FT1000_HI_HO);
-			}
-			else {
+			else
 				tempword = ntohs(ft1000_read_dpram_mag_16(dev, FT1000_MAG_HI_HO, FT1000_MAG_HI_HO_INDX));
-			}
 
 		}
 
@@ -957,12 +953,11 @@
 		u16 wrd;
 	} convert;
 
-	if (info->AsicID == ELECTRABUZZ_ID) {
+	if (info->AsicID == ELECTRABUZZ_ID)
 		tempword = FT1000_DPRAM_RX_BASE+2;
-	}
-	else {
+	else
 		tempword = FT1000_DPRAM_MAG_RX_BASE;
-	}
+
 	if (ft1000_receive_cmd(dev, &cmdbuffer[0], MAX_CMD_SQSIZE, &tempword)) {
 
 		/* Get the message type which is total_len + PSEUDO header + msgtype + message body */
@@ -1039,8 +1034,7 @@
 						info->ConTm = 0;
 					}
 				}
-			}
-			else {
+			} else {
 				pr_debug("Media is down\n");
 				if (info->mediastate == 1) {
 					info->mediastate = 0;
diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
index d12cfc9..f0ac438 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
@@ -332,15 +332,15 @@
 
 	pr_debug("enter card_send_command... size=%d\n", size);
 
+	ret = ft1000_read_register(ft1000dev, &temp, FT1000_REG_DOORBELL);
+	if (ret)
+		return ret;
+
 	commandbuf = kmalloc(size + 2, GFP_KERNEL);
 	if (!commandbuf)
 		return -ENOMEM;
 	memcpy((void *)commandbuf + 2, (void *)ptempbuffer, size);
 
-	ret = ft1000_read_register(ft1000dev, &temp, FT1000_REG_DOORBELL);
-	if (ret)
-		return ret;
-
 	if (temp & 0x0100)
 		usleep_range(900, 1100);
 
diff --git a/drivers/staging/gdm724x/gdm_lte.c b/drivers/staging/gdm724x/gdm_lte.c
index 73eede1..7c4a77b 100644
--- a/drivers/staging/gdm724x/gdm_lte.c
+++ b/drivers/staging/gdm724x/gdm_lte.c
@@ -281,7 +281,8 @@
 		icmp6_out.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT;
 		icmp6_out.icmp6_code = 0;
 		icmp6_out.icmp6_cksum = 0;
-		icmp6_out.icmp6_dataun.un_data32[0] = htonl(0x60000000); /* R=0, S=1, O=1 */
+		/* R=0, S=1, O=1 */
+		icmp6_out.icmp6_dataun.un_data32[0] = htonl(0x60000000);
 
 		ns = (struct neighbour_solicitation *)
 			(skb_in->data + mac_header_len +
diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c
index b5b063a..d1ab996 100644
--- a/drivers/staging/gdm724x/gdm_mux.c
+++ b/drivers/staging/gdm724x/gdm_mux.c
@@ -220,7 +220,7 @@
 static void do_rx(struct work_struct *work)
 {
 	struct mux_dev *mux_dev =
-		container_of(work, struct mux_dev , work_rx.work);
+		container_of(work, struct mux_dev, work_rx.work);
 	struct mux_rx *r;
 	struct rx_cxt *rx = (struct rx_cxt *)&mux_dev->rx;
 	unsigned long flags;
diff --git a/drivers/staging/gs_fpgaboot/io.c b/drivers/staging/gs_fpgaboot/io.c
index b260e45..819db53 100644
--- a/drivers/staging/gs_fpgaboot/io.c
+++ b/drivers/staging/gs_fpgaboot/io.c
@@ -79,15 +79,6 @@
 /*
  * generic bit swap for xilinx SYSTEMMAP FPGA programming
  */
-static inline unsigned char bitswap(unsigned char s)
-{
-	unsigned char d;
-
-	d = (((s&0x80)>>7) | ((s&0x40)>>5) | ((s&0x20)>>3) | ((s&0x10)>>1) |
-		((s&0x08)<<1) | ((s&0x04)<<3) | ((s&0x02)<<5) | ((s&0x01)<<7));
-	return d;
-}
-
 void xl_program_b(int32_t i)
 {
 }
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
index a6b2f90..4410d7f 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
@@ -85,6 +85,9 @@
 
 #include <linux/list.h>
 
+int libcfs_arch_init(void);
+void libcfs_arch_cleanup(void);
+
 /* libcfs tcpip */
 int libcfs_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
 int libcfs_ipif_enumerate(char ***names);
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h
index 2817112..3d86fb5 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h
@@ -458,14 +458,6 @@
 	struct page   *ldu_memhog_root_page;
 };
 
-/* what used to be in portals_lib.h */
-#ifndef MIN
-# define MIN(a, b) (((a) < (b)) ? (a) : (b))
-#endif
-#ifndef MAX
-# define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#endif
-
 #define MKSTR(ptr) ((ptr)) ? (ptr) : ""
 
 static inline int cfs_size_round4(int val)
diff --git a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
index 7e89b3b..99fb52a 100644
--- a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
+++ b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
@@ -752,9 +752,9 @@
 void lnet_counters_get(lnet_counters_t *counters);
 void lnet_counters_reset(void);
 
-unsigned int lnet_iov_nob(unsigned int niov, struct iovec *iov);
-int lnet_extract_iov(int dst_niov, struct iovec *dst,
-		     int src_niov, struct iovec *src,
+unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
+int lnet_extract_iov(int dst_niov, struct kvec *dst,
+		     int src_niov, struct kvec *src,
 		      unsigned int offset, unsigned int len);
 
 unsigned int lnet_kiov_nob(unsigned int niov, lnet_kiov_t *iov);
@@ -762,17 +762,17 @@
 		      int src_niov, lnet_kiov_t *src,
 		      unsigned int offset, unsigned int len);
 
-void lnet_copy_iov2iov(unsigned int ndiov, struct iovec *diov,
+void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
 		       unsigned int doffset,
-			unsigned int nsiov, struct iovec *siov,
+			unsigned int nsiov, struct kvec *siov,
 			unsigned int soffset, unsigned int nob);
-void lnet_copy_kiov2iov(unsigned int niov, struct iovec *iov,
+void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
 			unsigned int iovoffset,
 			 unsigned int nkiov, lnet_kiov_t *kiov,
 			 unsigned int kiovoffset, unsigned int nob);
 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
 			unsigned int kiovoffset,
-			 unsigned int niov, struct iovec *iov,
+			 unsigned int niov, struct kvec *iov,
 			 unsigned int iovoffset, unsigned int nob);
 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
 			 unsigned int doffset,
@@ -781,10 +781,10 @@
 
 static inline void
 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
-		   unsigned int nsiov, struct iovec *siov, unsigned int soffset,
+		   unsigned int nsiov, struct kvec *siov, unsigned int soffset,
 		   unsigned int nob)
 {
-	struct iovec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
+	struct kvec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
 
 	lnet_copy_iov2iov(1, &diov, doffset,
 			  nsiov, siov, soffset, nob);
@@ -795,17 +795,17 @@
 		    unsigned int nsiov, lnet_kiov_t *skiov,
 		    unsigned int soffset, unsigned int nob)
 {
-	struct iovec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
+	struct kvec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
 
 	lnet_copy_kiov2iov(1, &diov, doffset,
 			   nsiov, skiov, soffset, nob);
 }
 
 static inline void
-lnet_copy_flat2iov(unsigned int ndiov, struct iovec *diov, unsigned int doffset,
+lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
 		   int slen, void *src, unsigned int soffset, unsigned int nob)
 {
-	struct iovec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
+	struct kvec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
 
 	lnet_copy_iov2iov(ndiov, diov, doffset,
 			  1, &siov, soffset, nob);
@@ -816,7 +816,7 @@
 		    unsigned int doffset, int slen, void *src,
 		    unsigned int soffset, unsigned int nob)
 {
-	struct iovec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
+	struct kvec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
 
 	lnet_copy_iov2kiov(ndiov, dkiov, doffset,
 			   1, &siov, soffset, nob);
diff --git a/drivers/staging/lustre/include/linux/lnet/lib-types.h b/drivers/staging/lustre/include/linux/lnet/lib-types.h
index f16213f..ba1876f 100644
--- a/drivers/staging/lustre/include/linux/lnet/lib-types.h
+++ b/drivers/staging/lustre/include/linux/lnet/lib-types.h
@@ -217,7 +217,7 @@
 	unsigned int	  msg_wanted;
 	unsigned int	  msg_offset;
 	unsigned int	  msg_niov;
-	struct iovec	 *msg_iov;
+	struct kvec	 *msg_iov;
 	lnet_kiov_t	  *msg_kiov;
 
 	lnet_event_t	  msg_ev;
@@ -271,7 +271,7 @@
 	lnet_eq_t	    *md_eq;
 	unsigned int	  md_niov;		/* # frags */
 	union {
-		struct iovec  iov[LNET_MAX_IOV];
+		struct kvec   iov[LNET_MAX_IOV];
 		lnet_kiov_t   kiov[LNET_MAX_IOV];
 	} md_iov;
 } lnet_libmd_t;
@@ -346,7 +346,7 @@
 	 * credit if the LND does flow control. */
 	int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
 			int delayed, unsigned int niov,
-			struct iovec *iov, lnet_kiov_t *kiov,
+			struct kvec *iov, lnet_kiov_t *kiov,
 			unsigned int offset, unsigned int mlen, unsigned int rlen);
 
 	/* lnet_parse() has had to delay processing of this message
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
index 62b575d..6510169 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
@@ -1538,7 +1538,7 @@
 	fmr->fmr_pfmr = NULL;
 
 	spin_lock(&fps->fps_lock);
-	fpo->fpo_map_count --;  /* decref the pool */
+	fpo->fpo_map_count--;  /* decref the pool */
 
 	list_for_each_entry_safe(fpo, tmp, &fps->fps_pool_list, fpo_list) {
 		/* the first pool is persistent */
@@ -1547,7 +1547,7 @@
 
 		if (kiblnd_fmr_pool_is_idle(fpo, now)) {
 			list_move(&fpo->fpo_list, &zombies);
-			fps->fps_version ++;
+			fps->fps_version++;
 		}
 	}
 	spin_unlock(&fps->fps_lock);
@@ -1752,7 +1752,7 @@
 
 	LASSERT (pool->po_allocated > 0);
 	list_add(node, &pool->po_free_list);
-	pool->po_allocated --;
+	pool->po_allocated--;
 
 	list_for_each_entry_safe(pool, tmp, &ps->ps_pool_list, po_list) {
 		/* the first pool is persistent */
@@ -1781,7 +1781,7 @@
 		if (list_empty(&pool->po_free_list))
 			continue;
 
-		pool->po_allocated ++;
+		pool->po_allocated++;
 		pool->po_deadline = cfs_time_shift(IBLND_POOL_DEADLINE);
 		node = pool->po_free_list.next;
 		list_del(node);
@@ -1864,7 +1864,7 @@
 		return -EAGAIN;
 	}
 
-	for (i = 0; i < rd->rd_nfrags; i ++) {
+	for (i = 0; i < rd->rd_nfrags; i++) {
 		pmr->pmr_ipb[i].addr = rd->rd_frags[i].rf_addr;
 		pmr->pmr_ipb[i].size = rd->rd_frags[i].rf_nob;
 	}
@@ -2117,7 +2117,7 @@
 					     tps_poolset);
 	kib_tx_t	 *tx  = list_entry(node, kib_tx_t, tx_list);
 
-	tx->tx_cookie = tps->tps_next_tx_cookie ++;
+	tx->tx_cookie = tps->tps_next_tx_cookie++;
 }
 
 static void
@@ -2326,7 +2326,7 @@
 	}
 
 	for (hdev->ibh_mr_shift = 0;
-	     hdev->ibh_mr_shift < 64; hdev->ibh_mr_shift ++) {
+	     hdev->ibh_mr_shift < 64; hdev->ibh_mr_shift++) {
 		if (hdev->ibh_mr_size == (1ULL << hdev->ibh_mr_shift) ||
 		    hdev->ibh_mr_size == (1ULL << hdev->ibh_mr_shift) - 1)
 			return 0;
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
index b02b4ec..ab128de 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
@@ -1026,5 +1026,5 @@
 
 int  kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
 int  kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
-		 unsigned int niov, struct iovec *iov, lnet_kiov_t *kiov,
+		 unsigned int niov, struct kvec *iov, lnet_kiov_t *kiov,
 		 unsigned int offset, unsigned int mlen, unsigned int rlen);
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
index b48d7ed..4fd5d94 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
@@ -697,7 +697,7 @@
 
 static int
 kiblnd_setup_rd_iov(lnet_ni_t *ni, kib_tx_t *tx, kib_rdma_desc_t *rd,
-		    unsigned int niov, struct iovec *iov, int offset, int nob)
+		    unsigned int niov, struct kvec *iov, int offset, int nob)
 {
 	kib_net_t	  *net = ni->ni_data;
 	struct page	*page;
@@ -1125,7 +1125,7 @@
 			break;
 		}
 
-		wrknob = MIN(MIN(kiblnd_rd_frag_size(srcrd, srcidx),
+		wrknob = min(min(kiblnd_rd_frag_size(srcrd, srcidx),
 				 kiblnd_rd_frag_size(dstrd, dstidx)), resid);
 
 		sge = &tx->tx_sge[tx->tx_nwrq];
@@ -1461,7 +1461,7 @@
 	int	       target_is_router = lntmsg->msg_target_is_router;
 	int	       routing = lntmsg->msg_routing;
 	unsigned int      payload_niov = lntmsg->msg_niov;
-	struct iovec     *payload_iov = lntmsg->msg_iov;
+	struct kvec      *payload_iov = lntmsg->msg_iov;
 	lnet_kiov_t      *payload_kiov = lntmsg->msg_kiov;
 	unsigned int      payload_offset = lntmsg->msg_offset;
 	unsigned int      payload_nob = lntmsg->msg_len;
@@ -1628,7 +1628,7 @@
 {
 	lnet_process_id_t target = lntmsg->msg_target;
 	unsigned int      niov = lntmsg->msg_niov;
-	struct iovec     *iov = lntmsg->msg_iov;
+	struct kvec      *iov = lntmsg->msg_iov;
 	lnet_kiov_t      *kiov = lntmsg->msg_kiov;
 	unsigned int      offset = lntmsg->msg_offset;
 	unsigned int      nob = lntmsg->msg_len;
@@ -1687,7 +1687,7 @@
 
 int
 kiblnd_recv (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
-	     unsigned int niov, struct iovec *iov, lnet_kiov_t *kiov,
+	     unsigned int niov, struct kvec *iov, lnet_kiov_t *kiov,
 	     unsigned int offset, unsigned int mlen, unsigned int rlen)
 {
 	kib_rx_t    *rx = private;
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
index 9188b34..5956dba 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
@@ -773,7 +773,7 @@
 	/* Only match interfaces for additional connections
 	 * if I have > 1 interface */
 	n_ips = (net->ksnn_ninterfaces < 2) ? 0 :
-		MIN(n_peerips, net->ksnn_ninterfaces);
+		min(n_peerips, net->ksnn_ninterfaces);
 
 	for (i = 0; peer->ksnp_n_passive_ips < n_ips; i++) {
 		/*	      ^ yes really... */
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.h b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.h
index a29d4da..03488d2 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.h
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.h
@@ -69,7 +69,7 @@
 	int			kss_nconns;
 	struct ksock_sched_info	*kss_info;	/* owner of it */
 	struct page		*kss_rx_scratch_pgs[LNET_MAX_IOV];
-	struct iovec		kss_scratch_iov[LNET_MAX_IOV];
+	struct kvec		kss_scratch_iov[LNET_MAX_IOV];
 } ksock_sched_t;
 
 struct ksock_sched_info {
@@ -213,7 +213,7 @@
 	int	    tx_nob;	 /* # packet bytes */
 	int	    tx_resid;       /* residual bytes */
 	int	    tx_niov;	/* # packet iovec frags */
-	struct iovec  *tx_iov;	 /* packet iovec frags */
+	struct kvec  *tx_iov;	 /* packet iovec frags */
 	int	    tx_nkiov;       /* # packet page frags */
 	unsigned short tx_zc_aborted;  /* aborted ZC request */
 	unsigned short tx_zc_capable:1; /* payload is large enough for ZC */
@@ -227,11 +227,11 @@
 	int	    tx_desc_size;   /* size of this descriptor */
 	union {
 		struct {
-			struct iovec iov;       /* virt hdr */
+			struct kvec iov;       /* virt hdr */
 			lnet_kiov_t  kiov[0];   /* paged payload */
 		}		  paged;
 		struct {
-			struct iovec iov[1];    /* virt hdr + payload */
+			struct kvec iov[1];    /* virt hdr + payload */
 		}		  virt;
 	}		       tx_frags;
 } ksock_tx_t;
@@ -243,7 +243,7 @@
 /* space for the rx frag descriptors; we either read a single contiguous
  * header, or up to LNET_MAX_IOV frags of payload of either type. */
 typedef union {
-	struct iovec     iov[LNET_MAX_IOV];
+	struct kvec      iov[LNET_MAX_IOV];
 	lnet_kiov_t      kiov[LNET_MAX_IOV];
 } ksock_rxiovspace_t;
 
@@ -284,7 +284,7 @@
 	int		   ksnc_rx_nob_left; /* # bytes to next hdr/body */
 	int		   ksnc_rx_nob_wanted; /* bytes actually wanted */
 	int		   ksnc_rx_niov;     /* # iovec frags */
-	struct iovec	 *ksnc_rx_iov;      /* the iovec frags */
+	struct kvec 	 *ksnc_rx_iov;      /* the iovec frags */
 	int		   ksnc_rx_nkiov;    /* # page frags */
 	lnet_kiov_t	  *ksnc_rx_kiov;     /* the page frags */
 	ksock_rxiovspace_t    ksnc_rx_iov_space;/* space for frag descriptors */
@@ -517,7 +517,7 @@
 int ksocknal_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
 int ksocknal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
 		  int delayed, unsigned int niov,
-		  struct iovec *iov, lnet_kiov_t *kiov,
+		  struct kvec *iov, lnet_kiov_t *kiov,
 		  unsigned int offset, unsigned int mlen, unsigned int rlen);
 int ksocknal_accept(lnet_ni_t *ni, struct socket *sock);
 
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c
index e6c1d36..92760fe 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c
@@ -110,7 +110,7 @@
 static int
 ksocknal_send_iov (ksock_conn_t *conn, ksock_tx_t *tx)
 {
-	struct iovec  *iov = tx->tx_iov;
+	struct kvec  *iov = tx->tx_iov;
 	int    nob;
 	int    rc;
 
@@ -251,7 +251,7 @@
 static int
 ksocknal_recv_iov (ksock_conn_t *conn)
 {
-	struct iovec *iov = conn->ksnc_rx_iov;
+	struct kvec *iov = conn->ksnc_rx_iov;
 	int     nob;
 	int     rc;
 
@@ -926,7 +926,7 @@
 	int	       type = lntmsg->msg_type;
 	lnet_process_id_t target = lntmsg->msg_target;
 	unsigned int      payload_niov = lntmsg->msg_niov;
-	struct iovec     *payload_iov = lntmsg->msg_iov;
+	struct kvec      *payload_iov = lntmsg->msg_iov;
 	lnet_kiov_t      *payload_kiov = lntmsg->msg_kiov;
 	unsigned int      payload_offset = lntmsg->msg_offset;
 	unsigned int      payload_nob = lntmsg->msg_len;
@@ -1047,8 +1047,8 @@
 		case  KSOCK_PROTO_V2:
 		case  KSOCK_PROTO_V3:
 			conn->ksnc_rx_state = SOCKNAL_RX_KSM_HEADER;
-			conn->ksnc_rx_iov = (struct iovec *)&conn->ksnc_rx_iov_space;
-			conn->ksnc_rx_iov[0].iov_base = (char *)&conn->ksnc_msg;
+			conn->ksnc_rx_iov = (struct kvec *)&conn->ksnc_rx_iov_space;
+			conn->ksnc_rx_iov[0].iov_base = &conn->ksnc_msg;
 
 			conn->ksnc_rx_nob_wanted = offsetof(ksock_msg_t, ksm_u);
 			conn->ksnc_rx_nob_left = offsetof(ksock_msg_t, ksm_u);
@@ -1061,8 +1061,8 @@
 			conn->ksnc_rx_nob_wanted = sizeof(lnet_hdr_t);
 			conn->ksnc_rx_nob_left = sizeof(lnet_hdr_t);
 
-			conn->ksnc_rx_iov = (struct iovec *)&conn->ksnc_rx_iov_space;
-			conn->ksnc_rx_iov[0].iov_base = (char *)&conn->ksnc_msg.ksm_u.lnetmsg;
+			conn->ksnc_rx_iov = (struct kvec *)&conn->ksnc_rx_iov_space;
+			conn->ksnc_rx_iov[0].iov_base = &conn->ksnc_msg.ksm_u.lnetmsg;
 			conn->ksnc_rx_iov[0].iov_len  = sizeof (lnet_hdr_t);
 			break;
 
@@ -1082,12 +1082,12 @@
 
 	conn->ksnc_rx_state = SOCKNAL_RX_SLOP;
 	conn->ksnc_rx_nob_left = nob_to_skip;
-	conn->ksnc_rx_iov = (struct iovec *)&conn->ksnc_rx_iov_space;
+	conn->ksnc_rx_iov = (struct kvec *)&conn->ksnc_rx_iov_space;
 	skipped = 0;
 	niov = 0;
 
 	do {
-		nob = MIN (nob_to_skip, sizeof (ksocknal_slop_buffer));
+		nob = min_t(int, nob_to_skip, sizeof(ksocknal_slop_buffer));
 
 		conn->ksnc_rx_iov[niov].iov_base = ksocknal_slop_buffer;
 		conn->ksnc_rx_iov[niov].iov_len  = nob;
@@ -1212,8 +1212,8 @@
 		conn->ksnc_rx_nob_wanted = sizeof(ksock_lnet_msg_t);
 		conn->ksnc_rx_nob_left = sizeof(ksock_lnet_msg_t);
 
-		conn->ksnc_rx_iov = (struct iovec *)&conn->ksnc_rx_iov_space;
-		conn->ksnc_rx_iov[0].iov_base = (char *)&conn->ksnc_msg.ksm_u.lnetmsg;
+		conn->ksnc_rx_iov = (struct kvec *)&conn->ksnc_rx_iov_space;
+		conn->ksnc_rx_iov[0].iov_base = &conn->ksnc_msg.ksm_u.lnetmsg;
 		conn->ksnc_rx_iov[0].iov_len  = sizeof(ksock_lnet_msg_t);
 
 		conn->ksnc_rx_niov = 1;
@@ -1311,7 +1311,7 @@
 
 int
 ksocknal_recv (lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
-	       unsigned int niov, struct iovec *iov, lnet_kiov_t *kiov,
+	       unsigned int niov, struct kvec *iov, lnet_kiov_t *kiov,
 	       unsigned int offset, unsigned int mlen, unsigned int rlen)
 {
 	ksock_conn_t  *conn = (ksock_conn_t *)private;
@@ -1950,10 +1950,10 @@
 	/* This is a retry rather than a new connection */
 	route->ksnr_retry_interval *= 2;
 	route->ksnr_retry_interval =
-		MAX(route->ksnr_retry_interval,
+		max(route->ksnr_retry_interval,
 		    cfs_time_seconds(*ksocknal_tunables.ksnd_min_reconnectms)/1000);
 	route->ksnr_retry_interval =
-		MIN(route->ksnr_retry_interval,
+		min(route->ksnr_retry_interval,
 		    cfs_time_seconds(*ksocknal_tunables.ksnd_max_reconnectms)/1000);
 
 	LASSERT (route->ksnr_retry_interval != 0);
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib-linux.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib-linux.c
index 245c9d7..66cc509 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib-linux.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib-linux.c
@@ -92,11 +92,11 @@
 
 	{
 #if SOCKNAL_SINGLE_FRAG_TX
-		struct iovec    scratch;
-		struct iovec   *scratchiov = &scratch;
+		struct kvec    scratch;
+		struct kvec   *scratchiov = &scratch;
 		unsigned int    niov = 1;
 #else
-		struct iovec   *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+		struct kvec   *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
 		unsigned int    niov = tx->tx_niov;
 #endif
 		struct msghdr msg = {.msg_flags = MSG_DONTWAIT};
@@ -111,7 +111,7 @@
 		    nob < tx->tx_resid)
 			msg.msg_flags |= MSG_MORE;
 
-		rc = kernel_sendmsg(sock, &msg, (struct kvec *)scratchiov, niov, nob);
+		rc = kernel_sendmsg(sock, &msg, scratchiov, niov, nob);
 	}
 	return rc;
 }
@@ -153,14 +153,14 @@
 		}
 	} else {
 #if SOCKNAL_SINGLE_FRAG_TX || !SOCKNAL_RISK_KMAP_DEADLOCK
-		struct iovec  scratch;
-		struct iovec *scratchiov = &scratch;
+		struct kvec  scratch;
+		struct kvec *scratchiov = &scratch;
 		unsigned int  niov = 1;
 #else
 #ifdef CONFIG_HIGHMEM
 #warning "XXX risk of kmap deadlock on multiple frags..."
 #endif
-		struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+		struct kvec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
 		unsigned int  niov = tx->tx_nkiov;
 #endif
 		struct msghdr msg = {.msg_flags = MSG_DONTWAIT};
@@ -203,14 +203,14 @@
 ksocknal_lib_recv_iov (ksock_conn_t *conn)
 {
 #if SOCKNAL_SINGLE_FRAG_RX
-	struct iovec  scratch;
-	struct iovec *scratchiov = &scratch;
+	struct kvec  scratch;
+	struct kvec *scratchiov = &scratch;
 	unsigned int  niov = 1;
 #else
-	struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+	struct kvec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
 	unsigned int  niov = conn->ksnc_rx_niov;
 #endif
-	struct iovec *iov = conn->ksnc_rx_iov;
+	struct kvec *iov = conn->ksnc_rx_iov;
 	struct msghdr msg = {
 		.msg_flags      = 0
 	};
@@ -232,7 +232,7 @@
 	LASSERT (nob <= conn->ksnc_rx_nob_wanted);
 
 	rc = kernel_recvmsg(conn->ksnc_sock, &msg,
-		(struct kvec *)scratchiov, niov, nob, MSG_DONTWAIT);
+		scratchiov, niov, nob, MSG_DONTWAIT);
 
 	saved_csum = 0;
 	if (conn->ksnc_proto == &ksocknal_protocol_v2x) {
@@ -269,7 +269,7 @@
 
 static void *
 ksocknal_lib_kiov_vmap(lnet_kiov_t *kiov, int niov,
-		       struct iovec *iov, struct page **pages)
+		       struct kvec *iov, struct page **pages)
 {
 	void	     *addr;
 	int	       nob;
@@ -307,15 +307,15 @@
 ksocknal_lib_recv_kiov (ksock_conn_t *conn)
 {
 #if SOCKNAL_SINGLE_FRAG_RX || !SOCKNAL_RISK_KMAP_DEADLOCK
-	struct iovec   scratch;
-	struct iovec  *scratchiov = &scratch;
+	struct kvec   scratch;
+	struct kvec  *scratchiov = &scratch;
 	struct page  **pages      = NULL;
 	unsigned int   niov       = 1;
 #else
 #ifdef CONFIG_HIGHMEM
 #warning "XXX risk of kmap deadlock on multiple frags..."
 #endif
-	struct iovec  *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+	struct kvec  *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
 	struct page  **pages      = conn->ksnc_scheduler->kss_rx_scratch_pgs;
 	unsigned int   niov       = conn->ksnc_rx_nkiov;
 #endif
@@ -390,13 +390,13 @@
 	__u32	csum;
 	void	*base;
 
-	LASSERT(tx->tx_iov[0].iov_base == (void *)&tx->tx_msg);
+	LASSERT(tx->tx_iov[0].iov_base == &tx->tx_msg);
 	LASSERT(tx->tx_conn != NULL);
 	LASSERT(tx->tx_conn->ksnc_proto == &ksocknal_protocol_v2x);
 
 	tx->tx_msg.ksm_csum = 0;
 
-	csum = ksocknal_csum(~0, (void *)tx->tx_iov[0].iov_base,
+	csum = ksocknal_csum(~0, tx->tx_iov[0].iov_base,
 			     tx->tx_iov[0].iov_len);
 
 	if (tx->tx_kiov != NULL) {
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_proto.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_proto.c
index ea9d80f..b2f88eb 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_proto.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_proto.c
@@ -717,7 +717,7 @@
 	LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
 	LASSERT(tx->tx_lnetmsg != NULL);
 
-	tx->tx_iov[0].iov_base = (void *)&tx->tx_lnetmsg->msg_hdr;
+	tx->tx_iov[0].iov_base = &tx->tx_lnetmsg->msg_hdr;
 	tx->tx_iov[0].iov_len  = sizeof(lnet_hdr_t);
 
 	tx->tx_resid = tx->tx_nob = tx->tx_lnetmsg->msg_len + sizeof(lnet_hdr_t);
@@ -726,7 +726,7 @@
 static void
 ksocknal_pack_msg_v2(ksock_tx_t *tx)
 {
-	tx->tx_iov[0].iov_base = (void *)&tx->tx_msg;
+	tx->tx_iov[0].iov_base = &tx->tx_msg;
 
 	if (tx->tx_lnetmsg != NULL) {
 		LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
diff --git a/drivers/staging/lustre/lnet/lnet/lib-move.c b/drivers/staging/lustre/lnet/lnet/lib-move.c
index c8c1ed8..ed6eec9 100644
--- a/drivers/staging/lustre/lnet/lnet/lib-move.c
+++ b/drivers/staging/lustre/lnet/lnet/lib-move.c
@@ -158,7 +158,7 @@
 }
 
 unsigned int
-lnet_iov_nob(unsigned int niov, struct iovec *iov)
+lnet_iov_nob(unsigned int niov, struct kvec *iov)
 {
 	unsigned int nob = 0;
 
@@ -170,8 +170,8 @@
 EXPORT_SYMBOL(lnet_iov_nob);
 
 void
-lnet_copy_iov2iov(unsigned int ndiov, struct iovec *diov, unsigned int doffset,
-		   unsigned int nsiov, struct iovec *siov, unsigned int soffset,
+lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
+		   unsigned int nsiov, struct kvec *siov, unsigned int soffset,
 		   unsigned int nob)
 {
 	/* NB diov, siov are READ-ONLY */
@@ -201,9 +201,9 @@
 	do {
 		LASSERT(ndiov > 0);
 		LASSERT(nsiov > 0);
-		this_nob = MIN(diov->iov_len - doffset,
+		this_nob = min(diov->iov_len - doffset,
 			       siov->iov_len - soffset);
-		this_nob = MIN(this_nob, nob);
+		this_nob = min(this_nob, nob);
 
 		memcpy((char *)diov->iov_base + doffset,
 			(char *)siov->iov_base + soffset, this_nob);
@@ -229,8 +229,8 @@
 EXPORT_SYMBOL(lnet_copy_iov2iov);
 
 int
-lnet_extract_iov(int dst_niov, struct iovec *dst,
-		  int src_niov, struct iovec *src,
+lnet_extract_iov(int dst_niov, struct kvec *dst,
+		  int src_niov, struct kvec *src,
 		  unsigned int offset, unsigned int len)
 {
 	/* Initialise 'dst' to the subset of 'src' starting at 'offset',
@@ -322,9 +322,9 @@
 	do {
 		LASSERT(ndiov > 0);
 		LASSERT(nsiov > 0);
-		this_nob = MIN(diov->kiov_len - doffset,
+		this_nob = min(diov->kiov_len - doffset,
 			       siov->kiov_len - soffset);
-		this_nob = MIN(this_nob, nob);
+		this_nob = min(this_nob, nob);
 
 		if (daddr == NULL)
 			daddr = ((char *)kmap(diov->kiov_page)) +
@@ -371,7 +371,7 @@
 EXPORT_SYMBOL(lnet_copy_kiov2kiov);
 
 void
-lnet_copy_kiov2iov(unsigned int niov, struct iovec *iov, unsigned int iovoffset,
+lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov, unsigned int iovoffset,
 		   unsigned int nkiov, lnet_kiov_t *kiov,
 		   unsigned int kiovoffset, unsigned int nob)
 {
@@ -403,9 +403,9 @@
 	do {
 		LASSERT(niov > 0);
 		LASSERT(nkiov > 0);
-		this_nob = MIN(iov->iov_len - iovoffset,
-			       kiov->kiov_len - kiovoffset);
-		this_nob = MIN(this_nob, nob);
+		this_nob = min(iov->iov_len - iovoffset,
+			       (__kernel_size_t) kiov->kiov_len - kiovoffset);
+		this_nob = min(this_nob, nob);
 
 		if (addr == NULL)
 			addr = ((char *)kmap(kiov->kiov_page)) +
@@ -443,7 +443,7 @@
 void
 lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
 		   unsigned int kiovoffset, unsigned int niov,
-		   struct iovec *iov, unsigned int iovoffset,
+		   struct kvec *iov, unsigned int iovoffset,
 		   unsigned int nob)
 {
 	/* NB kiov, iov are READ-ONLY */
@@ -474,9 +474,9 @@
 	do {
 		LASSERT(nkiov > 0);
 		LASSERT(niov > 0);
-		this_nob = MIN(kiov->kiov_len - kiovoffset,
+		this_nob = min((__kernel_size_t) kiov->kiov_len - kiovoffset,
 			       iov->iov_len - iovoffset);
-		this_nob = MIN(this_nob, nob);
+		this_nob = min(this_nob, nob);
 
 		if (addr == NULL)
 			addr = ((char *)kmap(kiov->kiov_page)) +
@@ -566,7 +566,7 @@
 	     unsigned int offset, unsigned int mlen, unsigned int rlen)
 {
 	unsigned int  niov = 0;
-	struct iovec *iov = NULL;
+	struct kvec *iov = NULL;
 	lnet_kiov_t  *kiov = NULL;
 	int	   rc;
 
@@ -1530,7 +1530,7 @@
 	LASSERT(md->md_offset == 0);
 
 	rlength = hdr->payload_length;
-	mlength = MIN(rlength, (int)md->md_length);
+	mlength = min_t(int, rlength, md->md_length);
 
 	if (mlength < rlength &&
 	    (md->md_options & LNET_MD_TRUNCATE) == 0) {
diff --git a/drivers/staging/lustre/lnet/lnet/lo.c b/drivers/staging/lustre/lnet/lnet/lo.c
index 17e1643..f708c2e 100644
--- a/drivers/staging/lustre/lnet/lnet/lo.c
+++ b/drivers/staging/lustre/lnet/lnet/lo.c
@@ -47,7 +47,7 @@
 static int
 lolnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
 	    int delayed, unsigned int niov,
-	    struct iovec *iov, lnet_kiov_t *kiov,
+	    struct kvec *iov, lnet_kiov_t *kiov,
 	    unsigned int offset, unsigned int mlen, unsigned int rlen)
 {
 	lnet_msg_t *sendmsg = private;
diff --git a/drivers/staging/lustre/lnet/lnet/router.c b/drivers/staging/lustre/lnet/lnet/router.c
index c667b5b..1bbaa5b 100644
--- a/drivers/staging/lustre/lnet/lnet/router.c
+++ b/drivers/staging/lustre/lnet/lnet/router.c
@@ -46,7 +46,7 @@
 static int large_router_buffers;
 module_param(large_router_buffers, int, 0444);
 MODULE_PARM_DESC(large_router_buffers, "# of large messages to buffer in the router");
-static int peer_buffer_credits = 0;
+static int peer_buffer_credits;
 module_param(peer_buffer_credits, int, 0444);
 MODULE_PARM_DESC(peer_buffer_credits, "# router buffer credits per peer");
 
@@ -80,7 +80,7 @@
 
 #endif
 
-static int check_routers_before_use = 0;
+static int check_routers_before_use;
 module_param(check_routers_before_use, int, 0444);
 MODULE_PARM_DESC(check_routers_before_use, "Assume routers are down and ping them before use");
 
@@ -245,7 +245,7 @@
 
 static void lnet_shuffle_seed(void)
 {
-	static int seeded = 0;
+	static int seeded;
 	int lnd_type, seed[2];
 	struct timeval tv;
 	lnet_ni_t *ni;
@@ -793,7 +793,7 @@
 	LASSERT(the_lnet.ln_routing);
 
 	timeout = router_ping_timeout +
-		  MAX(live_router_check_interval, dead_router_check_interval);
+		  max(live_router_check_interval, dead_router_check_interval);
 
 	now = get_seconds();
 	list_for_each_entry(ni, &the_lnet.ln_nis, ni_list) {
@@ -1578,8 +1578,8 @@
 void
 lnet_router_checker (void)
 {
-	static time_t last = 0;
-	static int    running = 0;
+	static time_t last;
+	static int    running;
 
 	time_t	    now = get_seconds();
 	int	       interval = now - last;
@@ -1593,7 +1593,7 @@
 		return;
 
 	if (last != 0 &&
-	    interval > MAX(live_router_check_interval,
+	    interval > max(live_router_check_interval,
 			   dead_router_check_interval))
 		CNETERR("Checker(%d/%d) not called for %d seconds\n",
 			live_router_check_interval, dead_router_check_interval,
@@ -1664,13 +1664,16 @@
 	char *s;
 
 	s = getenv("LNET_ROUTER_PING_TIMEOUT");
-	if (s != NULL) router_ping_timeout = atoi(s);
+	if (s != NULL)
+		router_ping_timeout = atoi(s);
 
 	s = getenv("LNET_LIVE_ROUTER_CHECK_INTERVAL");
-	if (s != NULL) live_router_check_interval = atoi(s);
+	if (s != NULL)
+		live_router_check_interval = atoi(s);
 
 	s = getenv("LNET_DEAD_ROUTER_CHECK_INTERVAL");
-	if (s != NULL) dead_router_check_interval = atoi(s);
+	if (s != NULL)
+		dead_router_check_interval = atoi(s);
 
 	/* This replaces old lnd_notify mechanism */
 	check_routers_before_use = 1;
diff --git a/drivers/staging/lustre/lnet/lnet/router_proc.c b/drivers/staging/lustre/lnet/lnet/router_proc.c
index 46cde70..c055afc 100644
--- a/drivers/staging/lustre/lnet/lnet/router_proc.c
+++ b/drivers/staging/lustre/lnet/lnet/router_proc.c
@@ -49,7 +49,7 @@
  */
 #define LNET_PROC_CPT_BITS	(LNET_CPT_BITS + 1)
 /* change version, 16 bits or 8 bits */
-#define LNET_PROC_VER_BITS	MAX(((MIN(LNET_LOFFT_BITS, 64)) / 4), 8)
+#define LNET_PROC_VER_BITS	max_t(size_t, min_t(size_t, LNET_LOFFT_BITS, 64) / 4, 8)
 
 #define LNET_PROC_HASH_BITS	LNET_PEER_HASH_BITS
 /*
diff --git a/drivers/staging/lustre/lnet/selftest/conrpc.h b/drivers/staging/lustre/lnet/selftest/conrpc.h
index fc1cb56..2353889 100644
--- a/drivers/staging/lustre/lnet/selftest/conrpc.h
+++ b/drivers/staging/lustre/lnet/selftest/conrpc.h
@@ -54,7 +54,7 @@
 #define LST_TRANS_TIMEOUT       30
 #define LST_TRANS_MIN_TIMEOUT   3
 
-#define LST_VALIDATE_TIMEOUT(t) MIN(MAX(t, LST_TRANS_MIN_TIMEOUT), LST_TRANS_TIMEOUT)
+#define LST_VALIDATE_TIMEOUT(t) min(max(t, LST_TRANS_MIN_TIMEOUT), LST_TRANS_TIMEOUT)
 
 #define LST_PING_INTERVAL       8
 
diff --git a/drivers/staging/lustre/lnet/selftest/framework.c b/drivers/staging/lustre/lnet/selftest/framework.c
index cc9d182..5709148 100644
--- a/drivers/staging/lustre/lnet/selftest/framework.c
+++ b/drivers/staging/lustre/lnet/selftest/framework.c
@@ -103,7 +103,7 @@
 #define sfw_test_active(t)      (atomic_read(&(t)->tsi_nactive) != 0)
 #define sfw_batch_active(b)     (atomic_read(&(b)->bat_nactive) != 0)
 
-struct smoketest_framework {
+static struct smoketest_framework {
 	struct list_head	 fw_zombie_rpcs;     /* RPCs to be recycled */
 	struct list_head	 fw_zombie_sessions; /* stopping sessions */
 	struct list_head	 fw_tests;	   /* registered test cases */
@@ -194,9 +194,9 @@
 	return EBUSY; /* racing with sfw_session_expired() */
 }
 
-/* called with sfw_data.fw_lock held */
 static void
 sfw_deactivate_session (void)
+	__must_hold(&sfw_data.fw_lock)
 {
 	sfw_session_t *sn = sfw_data.fw_session;
 	int	    nactive = 0;
diff --git a/drivers/staging/lustre/lnet/selftest/module.c b/drivers/staging/lustre/lnet/selftest/module.c
index c6ef5b0..faf4098 100644
--- a/drivers/staging/lustre/lnet/selftest/module.c
+++ b/drivers/staging/lustre/lnet/selftest/module.c
@@ -61,31 +61,31 @@
 	int	i;
 
 	switch (lst_init_step) {
-		case LST_INIT_CONSOLE:
-			lstcon_console_fini();
-		case LST_INIT_FW:
-			sfw_shutdown();
-		case LST_INIT_RPC:
-			srpc_shutdown();
-		case LST_INIT_WI_TEST:
-			for (i = 0;
-			     i < cfs_cpt_number(lnet_cpt_table()); i++) {
-				if (lst_sched_test[i] == NULL)
-					continue;
-				cfs_wi_sched_destroy(lst_sched_test[i]);
-			}
-			LIBCFS_FREE(lst_sched_test,
-				    sizeof(lst_sched_test[0]) *
-				    cfs_cpt_number(lnet_cpt_table()));
-			lst_sched_test = NULL;
+	case LST_INIT_CONSOLE:
+		lstcon_console_fini();
+	case LST_INIT_FW:
+		sfw_shutdown();
+	case LST_INIT_RPC:
+		srpc_shutdown();
+	case LST_INIT_WI_TEST:
+		for (i = 0;
+		     i < cfs_cpt_number(lnet_cpt_table()); i++) {
+			if (lst_sched_test[i] == NULL)
+				continue;
+			cfs_wi_sched_destroy(lst_sched_test[i]);
+		}
+		LIBCFS_FREE(lst_sched_test,
+			    sizeof(lst_sched_test[0]) *
+			    cfs_cpt_number(lnet_cpt_table()));
+		lst_sched_test = NULL;
 
-		case LST_INIT_WI_SERIAL:
-			cfs_wi_sched_destroy(lst_sched_serial);
-			lst_sched_serial = NULL;
-		case LST_INIT_NONE:
-			break;
-		default:
-			LBUG();
+	case LST_INIT_WI_SERIAL:
+		cfs_wi_sched_destroy(lst_sched_serial);
+		lst_sched_serial = NULL;
+	case LST_INIT_NONE:
+		break;
+	default:
+		LBUG();
 	}
 	return;
 }
diff --git a/drivers/staging/lustre/lnet/selftest/rpc.c b/drivers/staging/lustre/lnet/selftest/rpc.c
index f753add..1f7d9a6 100644
--- a/drivers/staging/lustre/lnet/selftest/rpc.c
+++ b/drivers/staging/lustre/lnet/selftest/rpc.c
@@ -54,7 +54,7 @@
 	SRPC_STATE_STOPPING,
 } srpc_state_t;
 
-struct smoketest_rpc {
+static struct smoketest_rpc {
 	spinlock_t	 rpc_glock;	/* global lock */
 	srpc_service_t	*rpc_services[SRPC_SERVICE_MAX_ID + 1];
 	lnet_handle_eq_t rpc_lnet_eq;	/* _the_ LNet event queue */
@@ -468,6 +468,7 @@
 
 static int
 srpc_service_post_buffer(struct srpc_service_cd *scd, struct srpc_buffer *buf)
+	__must_hold(&scd->scd_lock)
 {
 	struct srpc_service	*sv = scd->scd_svc;
 	struct srpc_msg		*msg = &buf->buf_msg;
@@ -559,7 +560,7 @@
 		LASSERT(scd->scd_buf_posting > 0);
 		scd->scd_buf_posting--;
 		scd->scd_buf_total++;
-		scd->scd_buf_low = MAX(2, scd->scd_buf_total / 4);
+		scd->scd_buf_low = max(2, scd->scd_buf_total / 4);
 	}
 
 	if (rc != 0) {
@@ -697,6 +698,7 @@
 /* called with sv->sv_lock held */
 static void
 srpc_service_recycle_buffer(struct srpc_service_cd *scd, srpc_buffer_t *buf)
+	__must_hold(&scd->scd_lock)
 {
 	if (!scd->scd_svc->sv_shuttingdown && scd->scd_buf_adjust >= 0) {
 		if (srpc_service_post_buffer(scd, buf) != 0) {
@@ -1486,7 +1488,7 @@
 		if (scd->scd_buf_err == 0 && /* adding buffer is enabled */
 		    scd->scd_buf_adjust == 0 &&
 		    scd->scd_buf_nposted < scd->scd_buf_low) {
-			scd->scd_buf_adjust = MAX(scd->scd_buf_total / 2,
+			scd->scd_buf_adjust = max(scd->scd_buf_total / 2,
 						  SFW_TEST_WI_MIN);
 			swi_schedule_workitem(&scd->scd_buf_wi);
 		}
diff --git a/drivers/staging/lustre/lnet/selftest/selftest.h b/drivers/staging/lustre/lnet/selftest/selftest.h
index 9b5c5df..d487018 100644
--- a/drivers/staging/lustre/lnet/selftest/selftest.h
+++ b/drivers/staging/lustre/lnet/selftest/selftest.h
@@ -609,4 +609,16 @@
 	}
 }
 
+extern sfw_test_client_ops_t brw_test_client;
+void brw_init_test_client(void);
+
+extern srpc_service_t brw_test_service;
+void brw_init_test_service(void);
+
+extern sfw_test_client_ops_t ping_test_client;
+void ping_init_test_client(void);
+
+extern srpc_service_t ping_test_service;
+void ping_init_test_service(void);
+
 #endif /* __SELFTEST_SELFTEST_H__ */
diff --git a/drivers/staging/lustre/lnet/selftest/timer.c b/drivers/staging/lustre/lnet/selftest/timer.c
index f8352c2..441f947 100644
--- a/drivers/staging/lustre/lnet/selftest/timer.c
+++ b/drivers/staging/lustre/lnet/selftest/timer.c
@@ -57,7 +57,7 @@
 #define STTIMER_SLOT(t)	       (&stt_data.stt_hash[(((t) >> STTIMER_MINPOLL) & \
 						    (STTIMER_NSLOTS - 1))])
 
-struct st_timer_data {
+static struct st_timer_data {
 	spinlock_t	 stt_lock;
 	/* start time of the slot processed previously */
 	unsigned long       stt_prev_slot;
diff --git a/drivers/staging/lustre/lustre/fid/fid_internal.h b/drivers/staging/lustre/lustre/fid/fid_internal.h
index eb607c5..b5e8da8 100644
--- a/drivers/staging/lustre/lustre/fid/fid_internal.h
+++ b/drivers/staging/lustre/lustre/fid/fid_internal.h
@@ -47,7 +47,7 @@
 int seq_client_alloc_super(struct lu_client_seq *seq,
 			   const struct lu_env *env);
 
-#if defined (CONFIG_PROC_FS)
+#if defined(CONFIG_PROC_FS)
 extern struct lprocfs_vars seq_client_proc_list[];
 #endif
 
diff --git a/drivers/staging/lustre/lustre/fid/fid_request.c b/drivers/staging/lustre/lustre/fid/fid_request.c
index 64b1d80..063441a 100644
--- a/drivers/staging/lustre/lustre/fid/fid_request.c
+++ b/drivers/staging/lustre/lustre/fid/fid_request.c
@@ -402,7 +402,7 @@
 
 static void seq_client_proc_fini(struct lu_client_seq *seq)
 {
-#if defined (CONFIG_PROC_FS)
+#if defined(CONFIG_PROC_FS)
 	if (seq->lcs_proc_dir) {
 		if (!IS_ERR(seq->lcs_proc_dir))
 			lprocfs_remove(&seq->lcs_proc_dir);
@@ -413,7 +413,7 @@
 
 static int seq_client_proc_init(struct lu_client_seq *seq)
 {
-#if defined (CONFIG_PROC_FS)
+#if defined(CONFIG_PROC_FS)
 	int rc;
 
 	seq->lcs_proc_dir = lprocfs_register(seq->lcs_name,
diff --git a/drivers/staging/lustre/lustre/fld/fld_internal.h b/drivers/staging/lustre/lustre/fld/fld_internal.h
index 8806b60..6125bbe8 100644
--- a/drivers/staging/lustre/lustre/fld/fld_internal.h
+++ b/drivers/staging/lustre/lustre/fld/fld_internal.h
@@ -111,7 +111,7 @@
 
 	/**
 	 * Cache name used for debug and messages. */
-	char		     fci_name[80];
+	char		     fci_name[LUSTRE_MDT_MAXNAMELEN];
 	unsigned int		 fci_no_shrink:1;
 };
 
diff --git a/drivers/staging/lustre/lustre/fld/fld_request.c b/drivers/staging/lustre/lustre/fld/fld_request.c
index 0d361ff..7801db0 100644
--- a/drivers/staging/lustre/lustre/fld/fld_request.c
+++ b/drivers/staging/lustre/lustre/fld/fld_request.c
@@ -269,7 +269,7 @@
 }
 EXPORT_SYMBOL(fld_client_del_target);
 
-struct proc_dir_entry *fld_type_proc_dir = NULL;
+static struct proc_dir_entry *fld_type_proc_dir;
 
 #if defined (CONFIG_PROC_FS)
 static int fld_client_proc_init(struct lu_client_fld *fld)
diff --git a/drivers/staging/lustre/lustre/fld/lproc_fld.c b/drivers/staging/lustre/lustre/fld/lproc_fld.c
index 95e7de1..74b4db9 100644
--- a/drivers/staging/lustre/lustre/fld/lproc_fld.c
+++ b/drivers/staging/lustre/lustre/fld/lproc_fld.c
@@ -87,13 +87,25 @@
 }
 
 static ssize_t
-fld_proc_hash_seq_write(struct file *file, const char *buffer,
-			size_t count, loff_t *off)
+fld_proc_hash_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct lu_client_fld *fld;
 	struct lu_fld_hash *hash = NULL;
+	char *name;
 	int i;
 
+	if (count > 80)
+		return -ENAMETOOLONG;
+
+	name = kmalloc(count, GFP_KERNEL);
+	if (!name)
+		return -ENOMEM;
+
+	if (copy_from_user(name, buffer, count) != 0)
+		return -EFAULT;
+
 	fld = ((struct seq_file *)file->private_data)->private;
 	LASSERT(fld != NULL);
 
@@ -101,7 +113,7 @@
 		if (count != strlen(fld_hash[i].fh_name))
 			continue;
 
-		if (!strncmp(fld_hash[i].fh_name, buffer, count)) {
+		if (!strncmp(fld_hash[i].fh_name, name, count)) {
 			hash = &fld_hash[i];
 			break;
 		}
@@ -116,6 +128,7 @@
 		       fld->lcf_name, hash->fh_name);
 	}
 
+	kfree(name);
 	return count;
 }
 
diff --git a/drivers/staging/lustre/lustre/include/lclient.h b/drivers/staging/lustre/lustre/include/lclient.h
index b3b841f..316500c 100644
--- a/drivers/staging/lustre/lustre/include/lclient.h
+++ b/drivers/staging/lustre/lustre/include/lclient.h
@@ -135,6 +135,7 @@
 static inline struct cl_attr *ccc_env_thread_attr(const struct lu_env *env)
 {
 	struct cl_attr *attr = &ccc_env_info(env)->cti_attr;
+
 	memset(attr, 0, sizeof(*attr));
 	return attr;
 }
@@ -142,6 +143,7 @@
 static inline struct cl_io *ccc_env_thread_io(const struct lu_env *env)
 {
 	struct cl_io *io = &ccc_env_info(env)->cti_io;
+
 	memset(io, 0, sizeof(*io));
 	return io;
 }
diff --git a/drivers/staging/lustre/lustre/include/lprocfs_status.h b/drivers/staging/lustre/lustre/include/lprocfs_status.h
index cfe503b..8a25cf6 100644
--- a/drivers/staging/lustre/lustre/include/lprocfs_status.h
+++ b/drivers/staging/lustre/lustre/include/lprocfs_status.h
@@ -627,16 +627,16 @@
 extern int lprocfs_at_hist_helper(struct seq_file *m,
 				  struct adaptive_timeout *at);
 extern int lprocfs_rd_timeouts(struct seq_file *m, void *data);
-extern int lprocfs_wr_timeouts(struct file *file, const char *buffer,
+extern int lprocfs_wr_timeouts(struct file *file, const char __user *buffer,
 			       unsigned long count, void *data);
-extern int lprocfs_wr_evict_client(struct file *file, const char *buffer,
+extern int lprocfs_wr_evict_client(struct file *file, const char __user *buffer,
 			    size_t count, loff_t *off);
-extern int lprocfs_wr_ping(struct file *file, const char *buffer,
+extern int lprocfs_wr_ping(struct file *file, const char __user *buffer,
 			   size_t count, loff_t *off);
-extern int lprocfs_wr_import(struct file *file, const char *buffer,
+extern int lprocfs_wr_import(struct file *file, const char __user *buffer,
 		      size_t count, loff_t *off);
 extern int lprocfs_rd_pinger_recov(struct seq_file *m, void *n);
-extern int lprocfs_wr_pinger_recov(struct file *file, const char *buffer,
+extern int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
 				   size_t count, loff_t *off);
 
 /* Statfs helpers */
@@ -650,8 +650,8 @@
 extern int lprocfs_write_helper(const char __user *buffer, unsigned long count,
 				int *val);
 extern int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult);
-extern int lprocfs_write_u64_helper(const char *buffer, unsigned long count,
-				    __u64 *val);
+extern int lprocfs_write_u64_helper(const char __user *buffer,
+				unsigned long count, __u64 *val);
 extern int lprocfs_write_frac_u64_helper(const char *buffer,
 					 unsigned long count,
 					 __u64 *val, int mult);
@@ -716,7 +716,8 @@
 		return lprocfs_rd_##type(m, m->private);		\
 	}								\
 	static ssize_t name##_##type##_seq_write(struct file *file,	\
-			const char *buffer, size_t count, loff_t *off)	\
+			const char __user *buffer, size_t count,	\
+						loff_t *off)		\
 	{								\
 		struct seq_file *seq = file->private_data;		\
 		return lprocfs_wr_##type(file, buffer,			\
@@ -726,7 +727,8 @@
 
 #define LPROC_SEQ_FOPS_WR_ONLY(name, type)				\
 	static ssize_t name##_##type##_write(struct file *file,		\
-			const char *buffer, size_t count, loff_t *off)	\
+			const char __user *buffer, size_t count,	\
+						loff_t *off)		\
 	{								\
 		return lprocfs_wr_##type(file, buffer, count, off);	\
 	}								\
@@ -939,20 +941,24 @@
 static inline int lprocfs_rd_timeouts(struct seq_file *m, void *data)
 { return 0; }
 static inline int lprocfs_wr_timeouts(struct file *file,
-				      const char *buffer,
-				      unsigned long count, void *data)
+				const char __user *buffer,
+				unsigned long count, void *data)
 { return 0; }
-static inline int lprocfs_wr_evict_client(struct file *file, const char *buffer,
-				    size_t count, loff_t *off)
+static inline int lprocfs_wr_evict_client(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 { return 0; }
-static inline int lprocfs_wr_ping(struct file *file, const char *buffer,
-			   size_t count, loff_t *off)
+static inline int lprocfs_wr_ping(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 { return 0; }
-static inline int lprocfs_wr_import(struct file *file, const char *buffer,
-			      size_t count, loff_t *off)
+static inline int lprocfs_wr_import(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 { return 0; }
-static inline int lprocfs_wr_pinger_recov(struct file *file, const char *buffer,
-					size_t count, loff_t *off)
+static inline int lprocfs_wr_pinger_recov(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 { return 0; }
 
 /* Statfs helpers */
diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
index 7b7457c..305ecbe 100644
--- a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
+++ b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
@@ -105,6 +105,11 @@
  * FOO_BULK_PORTAL    is for incoming bulk on the FOO
  */
 
+/* Lustre service names are following the format
+ * service name + MDT + seq name
+ */
+#define LUSTRE_MDT_MAXNAMELEN	80
+
 #define CONNMGR_REQUEST_PORTAL	  1
 #define CONNMGR_REPLY_PORTAL	    2
 //#define OSC_REQUEST_PORTAL	    3
diff --git a/drivers/staging/lustre/lustre/include/lustre_fid.h b/drivers/staging/lustre/lustre/include/lustre_fid.h
index 2d6fbb4..0a0929f 100644
--- a/drivers/staging/lustre/lustre/include/lustre_fid.h
+++ b/drivers/staging/lustre/lustre/include/lustre_fid.h
@@ -358,7 +358,7 @@
 	 * Service uuid, passed from MDT + seq name to form unique seq name to
 	 * use it with procfs.
 	 */
-	char		    lcs_name[80];
+	char		    lcs_name[LUSTRE_MDT_MAXNAMELEN];
 
 	/*
 	 * Sequence width, that is how many objects may be allocated in one
@@ -408,7 +408,7 @@
 	 * Service uuid, passed from MDT + seq name to form unique seq name to
 	 * use it with procfs.
 	 */
-	char		    lss_name[80];
+	char		    lss_name[LUSTRE_MDT_MAXNAMELEN];
 
 	/*
 	 * Allocation chunks for super and meta sequences. Default values are
diff --git a/drivers/staging/lustre/lustre/include/lustre_fld.h b/drivers/staging/lustre/lustre/include/lustre_fld.h
index 64c5048..5ee4b1e 100644
--- a/drivers/staging/lustre/lustre/include/lustre_fld.h
+++ b/drivers/staging/lustre/lustre/include/lustre_fld.h
@@ -93,7 +93,7 @@
 
 	/**
 	 * Fld service name in form "fld-srv-lustre-MDTXXX" */
-	char		     lsf_name[80];
+	char		     lsf_name[LUSTRE_MDT_MAXNAMELEN];
 
 };
 
@@ -124,7 +124,7 @@
 
 	/**
 	 * Client fld proc entry name. */
-	char		     lcf_name[80];
+	char		     lcf_name[LUSTRE_MDT_MAXNAMELEN];
 
 	int		      lcf_flags;
 };
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h b/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h
index 6c6c57c..20e64cd 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_internal.h
@@ -249,8 +249,9 @@
 	struct __##var##__dummy_read {; } /* semicolon catcher */
 
 #define LDLM_POOL_PROC_WRITER(var, type)				    \
-	static int lprocfs_wr_##var(struct file *file, const char *buffer,  \
-			     unsigned long count, void *data)		    \
+	static int lprocfs_wr_##var(struct file *file,			    \
+				const char __user *buffer,		    \
+				unsigned long count, void *data)	    \
 	{								    \
 		struct ldlm_pool *pl = data;				    \
 		type tmp;						    \
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c b/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c
index 4c838f6..142b3dd 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_pool.c
@@ -697,8 +697,8 @@
 LDLM_POOL_PROC_READER_SEQ_SHOW(recalc_period, int);
 LDLM_POOL_PROC_WRITER(recalc_period, int);
 static ssize_t lprocfs_recalc_period_seq_write(struct file *file,
-					       const char *buf, size_t len,
-					       loff_t *off)
+					       const char __user *buf,
+					       size_t len, loff_t *off)
 {
 	struct seq_file *seq = file->private_data;
 
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
index 1f150e4..c6f62a9 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
@@ -72,7 +72,7 @@
 unsigned int ldlm_dump_granted_max = 256;
 
 #if defined(CONFIG_PROC_FS)
-static ssize_t lprocfs_wr_dump_ns(struct file *file, const char *buffer,
+static ssize_t lprocfs_wr_dump_ns(struct file *file, const char __user *buffer,
 				  size_t count, loff_t *off)
 {
 	ldlm_dump_all_namespaces(LDLM_NAMESPACE_SERVER, D_DLMTRACE);
@@ -287,8 +287,9 @@
 	return lprocfs_rd_uint(m, &supp);
 }
 
-static ssize_t lprocfs_elc_seq_write(struct file *file, const char *buffer,
-				 size_t count, loff_t *off)
+static ssize_t lprocfs_elc_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct ldlm_namespace *ns = ((struct seq_file *)file->private_data)->private;
 	unsigned int supp = -1;
diff --git a/drivers/staging/lustre/lustre/libcfs/libcfs_string.c b/drivers/staging/lustre/lustre/libcfs/libcfs_string.c
index fb88733..76d4392 100644
--- a/drivers/staging/lustre/lustre/libcfs/libcfs_string.c
+++ b/drivers/staging/lustre/lustre/libcfs/libcfs_string.c
@@ -47,7 +47,7 @@
 		 int *oldmask, int minmask, int allmask)
 {
 	const char *debugstr;
-	char op = 0;
+	char op = '\0';
 	int newmask = minmask, i, len, found = 0;
 
 	/* <str> must be a list of tokens separated by whitespace
@@ -55,10 +55,10 @@
 	 * appears first in <str>, '*oldmask' is used as the starting point
 	 * (relative), otherwise minmask is used (absolute).  An operator
 	 * applies to all following tokens up to the next operator. */
-	while (*str != 0) {
+	while (*str != '\0') {
 		while (isspace(*str))
 			str++;
-		if (*str == 0)
+		if (*str == '\0')
 			break;
 		if (*str == '+' || *str == '-') {
 			op = *str++;
@@ -67,13 +67,15 @@
 				newmask = *oldmask;
 			while (isspace(*str))
 				str++;
-			if (*str == 0)	  /* trailing op */
+			if (*str == '\0')  /* trailing op */
 				return -EINVAL;
 		}
 
 		/* find token length */
-		for (len = 0; str[len] != 0 && !isspace(str[len]) &&
-		      str[len] != '+' && str[len] != '-'; len++);
+		len = 0;
+		while (str[len] != '\0' && !isspace(str[len]) &&
+		       str[len] != '+' && str[len] != '-')
+			len++;
 
 		/* match token */
 		found = 0;
@@ -132,7 +134,7 @@
 		++end;
 	}
 
-	*end= '\0';
+	*end = '\0';
 out:
 	return str;
 }
diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-curproc.c b/drivers/staging/lustre/lustre/libcfs/linux/linux-curproc.c
index d71ad5e..9515347 100644
--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-curproc.c
+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-curproc.c
@@ -88,11 +88,6 @@
 	*cap = kcap.cap[0];
 }
 
-void cfs_kernel_cap_unpack(kernel_cap_t *kcap, cfs_cap_t cap)
-{
-	kcap->cap[0] = cap;
-}
-
 cfs_cap_t cfs_curproc_cap_pack(void)
 {
 	cfs_cap_t cap;
diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-tracefile.c b/drivers/staging/lustre/lustre/libcfs/linux/linux-tracefile.c
index 976c61e..fdc7189 100644
--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-tracefile.c
+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-tracefile.c
@@ -269,5 +269,5 @@
 {
 	int  total_mb = (totalram_pages >> (20 - PAGE_SHIFT));
 
-	return MAX(512, (total_mb * 80)/100);
+	return max(512, (total_mb * 80)/100);
 }
diff --git a/drivers/staging/lustre/lustre/libcfs/module.c b/drivers/staging/lustre/lustre/libcfs/module.c
index 2c4fc74..7dc77dd 100644
--- a/drivers/staging/lustre/lustre/libcfs/module.c
+++ b/drivers/staging/lustre/lustre/libcfs/module.c
@@ -42,8 +42,7 @@
 #include "../../include/linux/lnet/lnet.h"
 #include "tracefile.h"
 
-void
-kportal_memhog_free (struct libcfs_device_userstate *ldu)
+static void kportal_memhog_free (struct libcfs_device_userstate *ldu)
 {
 	struct page **level0p = &ldu->ldu_memhog_root_page;
 	struct page **level1p;
@@ -86,8 +85,7 @@
 	LASSERT (ldu->ldu_memhog_pages == 0);
 }
 
-int
-kportal_memhog_alloc(struct libcfs_device_userstate *ldu, int npages,
+static int kportal_memhog_alloc(struct libcfs_device_userstate *ldu, int npages,
 		     gfp_t flags)
 {
 	struct page **level0p;
@@ -334,8 +332,6 @@
 extern struct cfs_wi_sched *cfs_sched_rehash;
 
 extern void libcfs_init_nidstrings(void);
-extern int libcfs_arch_init(void);
-extern void libcfs_arch_cleanup(void);
 
 static int init_libcfs_module(void)
 {
diff --git a/drivers/staging/lustre/lustre/libcfs/nidstrings.c b/drivers/staging/lustre/lustre/libcfs/nidstrings.c
index 47c239f..c70da37 100644
--- a/drivers/staging/lustre/lustre/libcfs/nidstrings.c
+++ b/drivers/staging/lustre/lustre/libcfs/nidstrings.c
@@ -81,14 +81,105 @@
 	return str;
 }
 
-static int  libcfs_lo_str2addr(const char *str, int nob, __u32 *addr);
-static void libcfs_ip_addr2str(__u32 addr, char *str);
-static int  libcfs_ip_str2addr(const char *str, int nob, __u32 *addr);
-static void libcfs_decnum_addr2str(__u32 addr, char *str);
-static void libcfs_hexnum_addr2str(__u32 addr, char *str);
-static int  libcfs_num_str2addr(const char *str, int nob, __u32 *addr);
-static int  libcfs_num_parse(char *str, int len, struct list_head *list);
-static int  libcfs_num_match(__u32 addr, struct list_head *list);
+static int libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
+{
+	*addr = 0;
+	return 1;
+}
+
+static void libcfs_ip_addr2str(__u32 addr, char *str)
+{
+	snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u",
+		 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
+		 (addr >> 8) & 0xff, addr & 0xff);
+}
+
+static int libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
+{
+	unsigned int	a;
+	unsigned int	b;
+	unsigned int	c;
+	unsigned int	d;
+	int		n = nob; /* XscanfX */
+
+	/* numeric IP? */
+	if (sscanf(str, "%u.%u.%u.%u%n", &a, &b, &c, &d, &n) >= 4 &&
+	    n == nob &&
+	    (a & ~0xff) == 0 && (b & ~0xff) == 0 &&
+	    (c & ~0xff) == 0 && (d & ~0xff) == 0) {
+		*addr = ((a<<24)|(b<<16)|(c<<8)|d);
+		return 1;
+	}
+
+	return 0;
+}
+
+static void libcfs_decnum_addr2str(__u32 addr, char *str)
+{
+	snprintf(str, LNET_NIDSTR_SIZE, "%u", addr);
+}
+
+static void libcfs_hexnum_addr2str(__u32 addr, char *str)
+{
+	snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr);
+}
+
+static int libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
+{
+	int     n;
+
+	n = nob;
+	if (sscanf(str, "0x%x%n", addr, &n) >= 1 && n == nob)
+		return 1;
+
+	n = nob;
+	if (sscanf(str, "0X%x%n", addr, &n) >= 1 && n == nob)
+		return 1;
+
+	n = nob;
+	if (sscanf(str, "%u%n", addr, &n) >= 1 && n == nob)
+		return 1;
+
+	return 0;
+}
+
+/**
+ * Nf_parse_addrlist method for networks using numeric addresses.
+ *
+ * Examples of such networks are gm and elan.
+ *
+ * \retval 0 if \a str parsed to numeric address
+ * \retval errno otherwise
+ */
+static int
+libcfs_num_parse(char *str, int len, struct list_head *list)
+{
+	struct cfs_expr_list *el;
+	int	rc;
+
+	rc = cfs_expr_list_parse(str, len, 0, MAX_NUMERIC_VALUE, &el);
+	if (rc == 0)
+		list_add_tail(&el->el_link, list);
+
+	return rc;
+}
+
+/*
+ * Nf_match_addr method for networks using numeric addresses
+ *
+ * \retval 1 on match
+ * \retval 0 otherwise
+ */
+static int
+libcfs_num_match(__u32 addr, struct list_head *numaddr)
+{
+	struct cfs_expr_list *el;
+
+	LASSERT(!list_empty(numaddr));
+	el = list_entry(numaddr->next, struct cfs_expr_list, el_link);
+
+	return cfs_expr_list_match(addr, el);
+}
 
 struct netstrfns {
 	int	  nf_type;
@@ -197,24 +288,7 @@
 	{/* .nf_type      */  -1},
 };
 
-const int libcfs_nnetstrfns = ARRAY_SIZE(libcfs_netstrfns);
-
-int
-libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
-{
-	*addr = 0;
-	return 1;
-}
-
-void
-libcfs_ip_addr2str(__u32 addr, char *str)
-{
-#if 0   /* never lookup */
-#endif
-	snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u",
-		 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
-		 (addr >> 8) & 0xff, addr & 0xff);
-}
+static const int libcfs_nnetstrfns = ARRAY_SIZE(libcfs_netstrfns);
 
 /* CAVEAT EMPTOR XscanfX
  * I use "%n" at the end of a sscanf format to detect trailing junk.  However
@@ -223,60 +297,7 @@
  * fine, if it doesn't, then the scan ended at the end of the string, which is
  * fine too :) */
 
-int
-libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
-{
-	unsigned int	a;
-	unsigned int	b;
-	unsigned int	c;
-	unsigned int	d;
-	int		n = nob; /* XscanfX */
-
-	/* numeric IP? */
-	if (sscanf(str, "%u.%u.%u.%u%n", &a, &b, &c, &d, &n) >= 4 &&
-	    n == nob &&
-	    (a & ~0xff) == 0 && (b & ~0xff) == 0 &&
-	    (c & ~0xff) == 0 && (d & ~0xff) == 0) {
-		*addr = ((a<<24)|(b<<16)|(c<<8)|d);
-		return 1;
-	}
-
-	return 0;
-}
-
-void
-libcfs_decnum_addr2str(__u32 addr, char *str)
-{
-	snprintf(str, LNET_NIDSTR_SIZE, "%u", addr);
-}
-
-void
-libcfs_hexnum_addr2str(__u32 addr, char *str)
-{
-	snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr);
-}
-
-int
-libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
-{
-	int     n;
-
-	n = nob;
-	if (sscanf(str, "0x%x%n", addr, &n) >= 1 && n == nob)
-		return 1;
-
-	n = nob;
-	if (sscanf(str, "0X%x%n", addr, &n) >= 1 && n == nob)
-		return 1;
-
-	n = nob;
-	if (sscanf(str, "%u%n", addr, &n) >= 1 && n == nob)
-		return 1;
-
-	return 0;
-}
-
-struct netstrfns *
+static struct netstrfns *
 libcfs_lnd2netstrfns(int lnd)
 {
 	int    i;
@@ -289,7 +310,7 @@
 	return NULL;
 }
 
-struct netstrfns *
+static struct netstrfns *
 libcfs_namenum2netstrfns(const char *name)
 {
 	struct netstrfns *nf;
@@ -304,7 +325,7 @@
 	return NULL;
 }
 
-struct netstrfns *
+static struct netstrfns *
 libcfs_name2netstrfns(const char *name)
 {
 	int    i;
@@ -586,27 +607,6 @@
 };
 
 /**
- * Nf_parse_addrlist method for networks using numeric addresses.
- *
- * Examples of such networks are gm and elan.
- *
- * \retval 0 if \a str parsed to numeric address
- * \retval errno otherwise
- */
-static int
-libcfs_num_parse(char *str, int len, struct list_head *list)
-{
-	struct cfs_expr_list *el;
-	int	rc;
-
-	rc = cfs_expr_list_parse(str, len, 0, MAX_NUMERIC_VALUE, &el);
-	if (rc == 0)
-		list_add_tail(&el->el_link, list);
-
-	return rc;
-}
-
-/**
  * Parses \<addrrange\> token on the syntax.
  *
  * Allocates struct addrrange and links to \a nidrange via
@@ -812,23 +812,6 @@
 }
 EXPORT_SYMBOL(cfs_parse_nidlist);
 
-/*
- * Nf_match_addr method for networks using numeric addresses
- *
- * \retval 1 on match
- * \retval 0 otherwise
- */
-static int
-libcfs_num_match(__u32 addr, struct list_head *numaddr)
-{
-	struct cfs_expr_list *el;
-
-	LASSERT(!list_empty(numaddr));
-	el = list_entry(numaddr->next, struct cfs_expr_list, el_link);
-
-	return cfs_expr_list_match(addr, el);
-}
-
 /**
  * Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist).
  *
diff --git a/drivers/staging/lustre/lustre/lov/lproc_lov.c b/drivers/staging/lustre/lustre/lov/lproc_lov.c
index c993f25..c99f2f4 100644
--- a/drivers/staging/lustre/lustre/lov/lproc_lov.c
+++ b/drivers/staging/lustre/lustre/lov/lproc_lov.c
@@ -51,8 +51,9 @@
 	return seq_printf(m, "%llu\n", desc->ld_default_stripe_size);
 }
 
-static ssize_t lov_stripesize_seq_write(struct file *file, const char *buffer,
-				    size_t count, loff_t *off)
+static ssize_t lov_stripesize_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	struct lov_desc *desc;
@@ -81,8 +82,9 @@
 	return seq_printf(m, "%llu\n", desc->ld_default_stripe_offset);
 }
 
-static ssize_t lov_stripeoffset_seq_write(struct file *file, const char *buffer,
-				      size_t count, loff_t *off)
+static ssize_t lov_stripeoffset_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	struct lov_desc *desc;
@@ -110,8 +112,9 @@
 	return seq_printf(m, "%u\n", desc->ld_pattern);
 }
 
-static ssize_t lov_stripetype_seq_write(struct file *file, const char *buffer,
-				    size_t count, loff_t *off)
+static ssize_t lov_stripetype_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	struct lov_desc *desc;
@@ -140,8 +143,9 @@
 			(__s16)(desc->ld_default_stripe_count + 1) - 1);
 }
 
-static ssize_t lov_stripecount_seq_write(struct file *file, const char *buffer,
-				     size_t count, loff_t *off)
+static ssize_t lov_stripecount_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	struct lov_desc *desc;
diff --git a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
index 16341c8..c420219 100644
--- a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
+++ b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
@@ -52,7 +52,7 @@
 }
 
 static ssize_t mdc_max_rpcs_in_flight_seq_write(struct file *file,
-						const char *buffer,
+						const char __user *buffer,
 						size_t count,
 						loff_t *off)
 {
@@ -82,8 +82,9 @@
 }
 
 /* temporary for testing */
-static ssize_t mdc_kuc_write(struct file *file, const char *buffer,
-			     size_t count, loff_t *off)
+static ssize_t mdc_kuc_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *obd =
 			((struct seq_file *)file->private_data)->private;
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_lib.c b/drivers/staging/lustre/lustre/mdc/mdc_lib.c
index 4e59995..d3234cb 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_lib.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_lib.c
@@ -222,10 +222,9 @@
 	rec->cr_fsuid    = from_kuid(&init_user_ns, current_fsuid());
 	rec->cr_fsgid    = from_kgid(&init_user_ns, current_fsgid());
 	rec->cr_cap      = cfs_curproc_cap_pack();
-	if (op_data != NULL) {
-		rec->cr_fid1 = op_data->op_fid1;
-		rec->cr_fid2 = op_data->op_fid2;
-	}
+	rec->cr_fid1 = op_data->op_fid1;
+	rec->cr_fid2 = op_data->op_fid2;
+
 	rec->cr_mode     = mode;
 	cr_flags = mds_pack_open_flags(flags, mode);
 	rec->cr_rdev     = rdev;
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c
index 3b0f245..05d05ce 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_request.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c
@@ -1908,8 +1908,8 @@
 
 		/* copy UUID */
 		if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
-				     min((int) data->ioc_plen2,
-					 (int) sizeof(struct obd_uuid)))) {
+				 min_t(size_t, data->ioc_plen2,
+					       sizeof(struct obd_uuid)))) {
 			rc = -EFAULT;
 			goto out;
 		}
@@ -1921,8 +1921,8 @@
 			goto out;
 
 		if (copy_to_user(data->ioc_pbuf1, &stat_buf,
-				     min((int) data->ioc_plen1,
-					 (int) sizeof(stat_buf)))) {
+				 min_t(size_t, data->ioc_plen1,
+					       sizeof(stat_buf)))) {
 			rc = -EFAULT;
 			goto out;
 		}
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_object.c b/drivers/staging/lustre/lustre/obdclass/cl_object.c
index ce96bd2..c40bb6c 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_object.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_object.c
@@ -662,7 +662,8 @@
 	return cl_env_hash != NULL ? 0 :-ENOMEM;
 }
 
-static void cl_env_store_fini(void) {
+static void cl_env_store_fini(void)
+{
 	cfs_hash_putref(cl_env_hash);
 }
 
diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
index 66ceab2..b94aeac 100644
--- a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
+++ b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
@@ -83,9 +83,8 @@
 	int err;
 	int offset = 0;
 
-	err = copy_from_user(&hdr, (void *)arg, sizeof(hdr));
-	if (err)
-		return err;
+	if (copy_from_user(&hdr, (void *)arg, sizeof(hdr)))
+		return -EFAULT;
 
 	if (hdr.ioc_version != OBD_IOCTL_VERSION) {
 		CERROR("Version mismatch kernel (%x) vs application (%x)\n",
@@ -117,18 +116,19 @@
 	*len = hdr.ioc_len;
 	data = (struct obd_ioctl_data *)*buf;
 
-	err = copy_from_user(*buf, (void *)arg, hdr.ioc_len);
-	if (err) {
-		OBD_FREE_LARGE(*buf, hdr.ioc_len);
-		return err;
+	if (copy_from_user(*buf, (void *)arg, hdr.ioc_len)) {
+		err = -EFAULT;
+		goto free_buf;
 	}
-	if (hdr.ioc_len != data->ioc_len)
-		return -EINVAL;
+	if (hdr.ioc_len != data->ioc_len) {
+		err = -EINVAL;
+		goto free_buf;
+	}
 
 	if (obd_ioctl_is_invalid(data)) {
 		CERROR("ioctl not correctly formatted\n");
-		OBD_FREE_LARGE(*buf, hdr.ioc_len);
-		return -EINVAL;
+		err = -EINVAL;
+		goto free_buf;
 	}
 
 	if (data->ioc_inllen1) {
@@ -151,6 +151,10 @@
 	}
 
 	return 0;
+
+free_buf:
+	OBD_FREE_LARGE(*buf, hdr.ioc_len);
+	return err;
 }
 EXPORT_SYMBOL(obd_ioctl_getdata);
 
@@ -272,8 +276,9 @@
 	return seq_printf(m, "%s\n", obd_jobid_var);
 }
 
-static ssize_t obd_proc_jobid_var_seq_write(struct file *file, const char *buffer,
-					size_t count, loff_t *off)
+static ssize_t obd_proc_jobid_var_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	if (!count || count > JOBSTATS_JOBID_VAR_MAX_LEN)
 		return -EINVAL;
diff --git a/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c b/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
index 3b7dfc3..ddab94d 100644
--- a/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
+++ b/drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
@@ -45,6 +45,7 @@
 #include "../include/lprocfs_status.h"
 #include "../include/lustre/lustre_idl.h"
 #include <linux/seq_file.h>
+#include <linux/ctype.h>
 
 static const char * const obd_connect_names[] = {
 	"read_only",
@@ -1849,7 +1850,7 @@
 }
 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
 
-int lprocfs_write_u64_helper(const char *buffer, unsigned long count,
+int lprocfs_write_u64_helper(const char __user *buffer, unsigned long count,
 			     __u64 *val)
 {
 	return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
@@ -1862,6 +1863,7 @@
 	char kernbuf[22], *end, *pbuf;
 	__u64 whole, frac = 0, units;
 	unsigned frac_d = 1;
+	int sign = 1;
 
 	if (count > (sizeof(kernbuf) - 1))
 		return -EINVAL;
@@ -1872,7 +1874,7 @@
 	kernbuf[count] = '\0';
 	pbuf = kernbuf;
 	if (*pbuf == '-') {
-		mult = -mult;
+		sign = -1;
 		pbuf++;
 	}
 
@@ -1880,7 +1882,7 @@
 	if (pbuf == end)
 		return -EINVAL;
 
-	if (end != NULL && *end == '.') {
+	if (*end == '.') {
 		int i;
 		pbuf = end + 1;
 
@@ -1895,25 +1897,25 @@
 	}
 
 	units = 1;
-	switch (*end) {
-	case 'p': case 'P':
+	switch (tolower(*end)) {
+	case 'p':
 		units <<= 10;
-	case 't': case 'T':
+	case 't':
 		units <<= 10;
-	case 'g': case 'G':
+	case 'g':
 		units <<= 10;
-	case 'm': case 'M':
+	case 'm':
 		units <<= 10;
-	case 'k': case 'K':
+	case 'k':
 		units <<= 10;
 	}
 	/* Specified units override the multiplier */
-	if (units)
-		mult = mult < 0 ? -units : units;
+	if (units > 1)
+		mult = units;
 
 	frac *= mult;
 	do_div(frac, frac_d);
-	*val = whole * mult + frac;
+	*val = sign * (whole * mult + frac);
 	return 0;
 }
 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
diff --git a/drivers/staging/lustre/lustre/osc/lproc_osc.c b/drivers/staging/lustre/lustre/osc/lproc_osc.c
index 9f719bc..8e22e45 100644
--- a/drivers/staging/lustre/lustre/osc/lproc_osc.c
+++ b/drivers/staging/lustre/lustre/osc/lproc_osc.c
@@ -53,8 +53,9 @@
 	return rc;
 }
 
-static ssize_t osc_active_seq_write(struct file *file, const char *buffer,
-				    size_t count, loff_t *off)
+static ssize_t osc_active_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	int val, rc;
@@ -88,7 +89,8 @@
 }
 
 static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
-			const char *buffer, size_t count, loff_t *off)
+			const char __user *buffer,
+			size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	struct client_obd *cli = &dev->u.cli;
@@ -130,8 +132,9 @@
 	return lprocfs_seq_read_frac_helper(m, val, mult);
 }
 
-static ssize_t osc_max_dirty_mb_seq_write(struct file *file, const char *buffer,
-				      size_t count, loff_t *off)
+static ssize_t osc_max_dirty_mb_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	struct client_obd *cli = &dev->u.cli;
@@ -233,8 +236,9 @@
 	return rc;
 }
 
-static ssize_t osc_cur_grant_bytes_seq_write(struct file *file, const char *buffer,
-				  size_t count, loff_t *off)
+static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 	struct client_obd *cli = &obd->u.cli;
@@ -290,7 +294,8 @@
 }
 
 static ssize_t osc_grant_shrink_interval_seq_write(struct file *file,
-				const char *buffer, size_t count, loff_t *off)
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 	int val, rc;
@@ -322,8 +327,9 @@
 			obd->u.cli.cl_checksum ? 1 : 0);
 }
 
-static ssize_t osc_checksum_seq_write(struct file *file, const char *buffer,
-			   size_t count, loff_t *off)
+static ssize_t osc_checksum_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 	int val, rc;
@@ -362,7 +368,8 @@
 	return 0;
 }
 
-static ssize_t osc_checksum_type_seq_write(struct file *file, const char *buffer,
+static ssize_t osc_checksum_type_seq_write(struct file *file,
+				const char __user *buffer,
 				size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
@@ -401,8 +408,9 @@
 	return seq_printf(m, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 }
 
-static ssize_t osc_resend_count_seq_write(struct file *file, const char *buffer,
-			       size_t count, loff_t *off)
+static ssize_t osc_resend_count_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 	int val, rc;
@@ -428,8 +436,9 @@
 	return seq_printf(m, "%u\n", od->od_contention_time);
 }
 
-static ssize_t osc_contention_seconds_seq_write(struct file *file, const char *buffer,
-				     size_t count, loff_t *off)
+static ssize_t osc_contention_seconds_seq_write(struct file *file,
+					const char __user *buffer,
+					size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 	struct osc_device *od  = obd2osc_dev(obd);
@@ -447,8 +456,9 @@
 	return seq_printf(m, "%u\n", od->od_lockless_truncate);
 }
 
-static ssize_t osc_lockless_truncate_seq_write(struct file *file, const char *buffer,
-				    size_t count, loff_t *off)
+static ssize_t osc_lockless_truncate_seq_write(struct file *file,
+					const char __user *buffer,
+					size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 	struct osc_device *od  = obd2osc_dev(obd);
@@ -472,7 +482,8 @@
 }
 
 static ssize_t osc_obd_max_pages_per_rpc_seq_write(struct file *file,
-				const char *buffer, size_t count, loff_t *off)
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 	struct client_obd *cli = &dev->u.cli;
@@ -664,8 +675,9 @@
 }
 #undef pct
 
-static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
-				       size_t len, loff_t *off)
+static ssize_t osc_rpc_stats_seq_write(struct file *file,
+				const char __user *buf,
+				size_t len, loff_t *off)
 {
 	struct seq_file *seq = file->private_data;
 	struct obd_device *dev = seq->private;
@@ -702,8 +714,9 @@
 	return 0;
 }
 
-static ssize_t osc_stats_seq_write(struct file *file, const char *buf,
-				   size_t len, loff_t *off)
+static ssize_t osc_stats_seq_write(struct file *file,
+				const char __user *buf,
+				size_t len, loff_t *off)
 {
 	struct seq_file *seq = file->private_data;
 	struct obd_device *dev = seq->private;
diff --git a/drivers/staging/lustre/lustre/osc/osc_internal.h b/drivers/staging/lustre/lustre/osc/osc_internal.h
index d788dac..af96c7b 100644
--- a/drivers/staging/lustre/lustre/osc/osc_internal.h
+++ b/drivers/staging/lustre/lustre/osc/osc_internal.h
@@ -160,11 +160,6 @@
 	return cli->cl_r_in_flight + cli->cl_w_in_flight;
 }
 
-#ifndef min_t
-#define min_t(type, x, y) \
-	({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
-#endif
-
 struct osc_device {
 	struct cl_device    od_cl;
 	struct obd_export  *od_exp;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c b/drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c
index 4011e00..90448e9 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c
@@ -181,9 +181,10 @@
 	return ll_eopcode_table[opcode].opname;
 }
 #if defined (CONFIG_PROC_FS)
-void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
-			     char *name, struct proc_dir_entry **procroot_ret,
-			     struct lprocfs_stats **stats_ret)
+static void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
+				    char *name,
+				    struct proc_dir_entry **procroot_ret,
+				    struct lprocfs_stats **stats_ret)
 {
 	struct proc_dir_entry *svc_procroot;
 	struct lprocfs_stats *svc_stats;
@@ -284,8 +285,9 @@
 }
 
 static ssize_t
-ptlrpc_lprocfs_req_history_max_seq_write(struct file *file, const char *buffer,
-					 size_t count, loff_t *off)
+ptlrpc_lprocfs_req_history_max_seq_write(struct file *file,
+					const char __user *buffer,
+					size_t count, loff_t *off)
 {
 	struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
 	int			    bufpages;
@@ -329,8 +331,9 @@
 }
 
 static ssize_t
-ptlrpc_lprocfs_threads_min_seq_write(struct file *file, const char *buffer,
-				     size_t count, loff_t *off)
+ptlrpc_lprocfs_threads_min_seq_write(struct file *file,
+					const char __user *buffer,
+					size_t count, loff_t *off)
 {
 	struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
 	int	val;
@@ -381,8 +384,9 @@
 }
 
 static ssize_t
-ptlrpc_lprocfs_threads_max_seq_write(struct file *file, const char *buffer,
-				     size_t count, loff_t *off)
+ptlrpc_lprocfs_threads_max_seq_write(struct file *file,
+				const char __user *buffer,
+				size_t count, loff_t *off)
 {
 	struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
 	int	val;
@@ -1025,7 +1029,7 @@
 }
 
 static ssize_t ptlrpc_lprocfs_hp_ratio_seq_write(struct file *file,
-					     const char *buffer,
+					     const char __user *buffer,
 					     size_t count,
 					     loff_t *off)
 {
@@ -1175,7 +1179,7 @@
 
 #define BUFLEN (UUID_MAX + 5)
 
-int lprocfs_wr_evict_client(struct file *file, const char *buffer,
+int lprocfs_wr_evict_client(struct file *file, const char __user *buffer,
 			    size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
@@ -1223,7 +1227,7 @@
 
 #undef BUFLEN
 
-int lprocfs_wr_ping(struct file *file, const char *buffer,
+int lprocfs_wr_ping(struct file *file, const char __user *buffer,
 		    size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
@@ -1251,7 +1255,7 @@
  * The connection UUID is a node's primary NID. For example,
  * "echo connection=192.168.0.1@tcp0::instance > .../import".
  */
-int lprocfs_wr_import(struct file *file, const char *buffer,
+int lprocfs_wr_import(struct file *file, const char __user *buffer,
 		      size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
@@ -1329,7 +1333,7 @@
 }
 EXPORT_SYMBOL(lprocfs_rd_pinger_recov);
 
-int lprocfs_wr_pinger_recov(struct file *file, const char *buffer,
+int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
 		      size_t count, loff_t *off)
 {
 	struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c b/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c
index c500aff..81de68e 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_gc.c
@@ -47,6 +47,8 @@
 #include "../include/lustre_net.h"
 #include "../include/lustre_sec.h"
 
+#include "ptlrpc_internal.h"
+
 #define SEC_GC_INTERVAL (30 * 60)
 
 
diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c
index 704fa20..a425f71 100644
--- a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c
+++ b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c
@@ -901,7 +901,7 @@
 	struct device *dev = ipipe->subdev.v4l2_dev->dev;
 
 	if (!gbce_param) {
-		memset(gbce, 0 , sizeof(struct vpfe_ipipe_gbce));
+		memset(gbce, 0, sizeof(struct vpfe_ipipe_gbce));
 	} else {
 		memcpy(gbce, gbce_param, sizeof(struct vpfe_ipipe_gbce));
 		if (ipipe_validate_gbce_params(gbce) < 0) {
@@ -1086,7 +1086,7 @@
 	struct vpfe_ipipe_car *car = &ipipe->config.car;
 
 	if (!car_param) {
-		memset(car , 0, sizeof(struct vpfe_ipipe_car));
+		memset(car, 0, sizeof(struct vpfe_ipipe_car));
 	} else {
 		memcpy(car, car_param, sizeof(struct vpfe_ipipe_car));
 		if (ipipe_validate_car_params(car) < 0) {
diff --git a/drivers/staging/mt29f_spinand/Kconfig b/drivers/staging/mt29f_spinand/Kconfig
index 4031748..f3f9cb3 100644
--- a/drivers/staging/mt29f_spinand/Kconfig
+++ b/drivers/staging/mt29f_spinand/Kconfig
@@ -12,5 +12,5 @@
 	bool "Use SPINAND internal ECC"
 	depends on MTD_SPINAND_MT29F
 	help
-	  Internel ECC.
+	  Internal ECC.
 	  Enables Hardware ECC support for Micron SPI NAND.
diff --git a/drivers/staging/mt29f_spinand/mt29f_spinand.c b/drivers/staging/mt29f_spinand/mt29f_spinand.c
index 3628bcb..3b191fc 100644
--- a/drivers/staging/mt29f_spinand/mt29f_spinand.c
+++ b/drivers/staging/mt29f_spinand/mt29f_spinand.c
@@ -626,7 +626,8 @@
 static int spinand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
 		uint8_t *buf, int oob_required, int page)
 {
-	u8 retval, status;
+	int retval;
+	u8 status;
 	uint8_t *p = buf;
 	int eccsize = chip->ecc.size;
 	int eccsteps = chip->ecc.steps;
@@ -640,6 +641,13 @@
 
 	while (1) {
 		retval = spinand_read_status(info->spi, &status);
+		if (retval < 0) {
+			dev_err(&mtd->dev,
+					"error %d reading status register\n",
+					retval);
+			return retval;
+		}
+
 		if ((status & STATUS_OIP_MASK) == STATUS_READY) {
 			if ((status & STATUS_ECC_MASK) == STATUS_ECC_ERROR) {
 				pr_info("spinand: ECC error\n");
@@ -685,6 +693,13 @@
 
 	while (time_before(jiffies, timeo)) {
 		retval = spinand_read_status(info->spi, &status);
+		if (retval < 0) {
+			dev_err(&mtd->dev,
+					"error %d reading status register\n",
+					retval);
+			return retval;
+		}
+
 		if ((status & STATUS_OIP_MASK) == STATUS_READY)
 			return 0;
 
diff --git a/drivers/staging/netlogic/xlr_net.c b/drivers/staging/netlogic/xlr_net.c
index 5ecb3e6..e8aae09 100644
--- a/drivers/staging/netlogic/xlr_net.c
+++ b/drivers/staging/netlogic/xlr_net.c
@@ -788,7 +788,7 @@
 			xlr_nae_wreg(priv->base_addr, R_MAC_CONFIG_2, 0x7117);
 			priv->phy_speed = speed;
 		}
-		/* Set SGMII speed in Interface controll reg */
+		/* Set SGMII speed in Interface control reg */
 		if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
 			if (speed == SPEED_10)
 				xlr_nae_wreg(priv->base_addr,
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index 093535c..2637059 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -259,7 +259,7 @@
  * and return immediately.
  *
  * Returns: 0 on success, a negative error code on failure. If a failure
- * occured, the nvec driver may print an error.
+ * occurred, the nvec driver may print an error.
  */
 int nvec_write_async(struct nvec_chip *nvec, const unsigned char *data,
 			short size)
diff --git a/drivers/staging/octeon-usb/octeon-hcd.c b/drivers/staging/octeon-usb/octeon-hcd.c
index 6b8b108..1daeb31 100644
--- a/drivers/staging/octeon-usb/octeon-hcd.c
+++ b/drivers/staging/octeon-usb/octeon-hcd.c
@@ -2687,7 +2687,7 @@
 
 	/*
 	 * Read the channel config info so we can figure out how much data
-	 * transfered
+	 * transferred
 	 */
 	usbc_hcchar.u32 = __cvmx_usb_read_csr32(usb,
 			CVMX_USBCX_HCCHARX(channel, usb->index));
diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
index fcbe836..22667db 100644
--- a/drivers/staging/octeon/ethernet-rx.c
+++ b/drivers/staging/octeon/ethernet-rx.c
@@ -109,6 +109,7 @@
 		int interface = cvmx_helper_get_interface_num(work->ipprt);
 		int index = cvmx_helper_get_interface_index_num(work->ipprt);
 		union cvmx_gmxx_rxx_frm_ctl gmxx_rxx_frm_ctl;
+
 		gmxx_rxx_frm_ctl.u64 =
 		    cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface));
 		if (gmxx_rxx_frm_ctl.s.pre_chk == 0) {
@@ -214,6 +215,7 @@
 		did_work_request = 0;
 		if (work == NULL) {
 			union cvmx_pow_wq_int wq_int;
+
 			wq_int.u64 = 0;
 			wq_int.s.iq_dis = 1 << pow_receive_group;
 			wq_int.s.wq_int = 1 << pow_receive_group;
diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c
index ee32149..460e854 100644
--- a/drivers/staging/octeon/ethernet.c
+++ b/drivers/staging/octeon/ethernet.c
@@ -798,7 +798,7 @@
 	cvm_oct_rx_initialize();
 
 	/*
-	 * 150 uS: about 10 1500-byte packtes at 1GE.
+	 * 150 uS: about 10 1500-byte packets at 1GE.
 	 */
 	cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000);
 
diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c
index 6a9a881..bc7e664 100644
--- a/drivers/staging/olpc_dcon/olpc_dcon.c
+++ b/drivers/staging/olpc_dcon/olpc_dcon.c
@@ -780,7 +780,7 @@
 };
 MODULE_DEVICE_TABLE(i2c, dcon_idtable);
 
-struct i2c_driver dcon_driver = {
+static struct i2c_driver dcon_driver = {
 	.driver = {
 		.name	= "olpc_dcon",
 		.pm = &dcon_pm_ops,
diff --git a/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c b/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c
index 77e8eb5..0c5a10c 100644
--- a/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c
+++ b/drivers/staging/olpc_dcon/olpc_dcon_xo_1.c
@@ -52,7 +52,7 @@
 	 * Determine the current state by reading the GPIO bit; earlier
 	 * stages of the boot process have established the state.
 	 *
-	 * Note that we read GPIO_OUPUT_VAL rather than GPIO_READ_BACK here;
+	 * Note that we read GPIO_OUTPUT_VAL rather than GPIO_READ_BACK here;
 	 * this is because OFW will disable input for the pin and set a value..
 	 * READ_BACK will only contain a valid value if input is enabled and
 	 * then a value is set.  So, future readings of the pin can use
diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c
index 98325b7..9c68ccf 100644
--- a/drivers/staging/panel/panel.c
+++ b/drivers/staging/panel/panel.c
@@ -130,6 +130,30 @@
 #define LCD_FLAG_N		0x0040	/* 2-rows mode */
 #define LCD_FLAG_L		0x0080	/* backlight enabled */
 
+/* LCD commands */
+#define LCD_CMD_DISPLAY_CLEAR	0x01	/* Clear entire display */
+
+#define LCD_CMD_ENTRY_MODE	0x04	/* Set entry mode */
+#define LCD_CMD_CURSOR_INC	0x02	/* Increment cursor */
+
+#define LCD_CMD_DISPLAY_CTRL	0x08	/* Display control */
+#define LCD_CMD_DISPLAY_ON	0x04	/* Set display on */
+#define LCD_CMD_CURSOR_ON	0x02	/* Set cursor on */
+#define LCD_CMD_BLINK_ON	0x01	/* Set blink on */
+
+#define LCD_CMD_SHIFT		0x10	/* Shift cursor/display */
+#define LCD_CMD_DISPLAY_SHIFT	0x08	/* Shift display instead of cursor */
+#define LCD_CMD_SHIFT_RIGHT	0x04	/* Shift display/cursor to the right */
+
+#define LCD_CMD_FUNCTION_SET	0x20	/* Set function */
+#define LCD_CMD_DATA_LEN_8BITS	0x10	/* Set data length to 8 bits */
+#define LCD_CMD_TWO_LINES	0x08	/* Set to two display lines */
+#define LCD_CMD_FONT_5X10_DOTS	0x04	/* Set char font to 5x10 dots */
+
+#define LCD_CMD_SET_CGRAM_ADDR	0x40	/* Set char generator RAM address */
+
+#define LCD_CMD_SET_DDRAM_ADDR	0x80	/* Set display data RAM address */
+
 #define LCD_ESCAPE_LEN		24	/* max chars for LCD escape command */
 #define LCD_ESCAPE_CHAR	27	/* use char 27 for escape command */
 
@@ -228,9 +252,6 @@
 	bool initialized;
 	bool must_clear;
 
-	/* TODO: use bool here? */
-	char left_shift;
-
 	int height;
 	int width;
 	int bwidth;
@@ -886,7 +907,7 @@
 
 static void lcd_gotoxy(void)
 {
-	lcd_write_cmd(0x80	/* set DDRAM address */
+	lcd_write_cmd(LCD_CMD_SET_DDRAM_ADDR
 		      | (lcd.addr.y ? lcd.hwidth : 0)
 		      /* we force the cursor to stay at the end of the
 			 line if it wants to go farther */
@@ -994,7 +1015,7 @@
 /* clears the display and resets X/Y */
 static void lcd_clear_display(void)
 {
-	lcd_write_cmd(0x01);	/* clear display */
+	lcd_write_cmd(LCD_CMD_DISPLAY_CLEAR);
 	lcd.addr.x = 0;
 	lcd.addr.y = 0;
 	/* we must wait a few milliseconds (15) */
@@ -1008,26 +1029,29 @@
 
 	long_sleep(20);		/* wait 20 ms after power-up for the paranoid */
 
-	lcd_write_cmd(0x30);	/* 8bits, 1 line, small fonts */
+	/* 8bits, 1 line, small fonts; let's do it 3 times */
+	lcd_write_cmd(LCD_CMD_FUNCTION_SET | LCD_CMD_DATA_LEN_8BITS);
 	long_sleep(10);
-	lcd_write_cmd(0x30);	/* 8bits, 1 line, small fonts */
+	lcd_write_cmd(LCD_CMD_FUNCTION_SET | LCD_CMD_DATA_LEN_8BITS);
 	long_sleep(10);
-	lcd_write_cmd(0x30);	/* 8bits, 1 line, small fonts */
+	lcd_write_cmd(LCD_CMD_FUNCTION_SET | LCD_CMD_DATA_LEN_8BITS);
 	long_sleep(10);
 
-	lcd_write_cmd(0x30	/* set font height and lines number */
-		      | ((lcd.flags & LCD_FLAG_F) ? 4 : 0)
-		      | ((lcd.flags & LCD_FLAG_N) ? 8 : 0)
+	/* set font height and lines number */
+	lcd_write_cmd(LCD_CMD_FUNCTION_SET | LCD_CMD_DATA_LEN_8BITS
+		      | ((lcd.flags & LCD_FLAG_F) ? LCD_CMD_FONT_5X10_DOTS : 0)
+		      | ((lcd.flags & LCD_FLAG_N) ? LCD_CMD_TWO_LINES : 0)
 	    );
 	long_sleep(10);
 
-	lcd_write_cmd(0x08);	/* display off, cursor off, blink off */
+	/* display off, cursor off, blink off */
+	lcd_write_cmd(LCD_CMD_DISPLAY_CTRL);
 	long_sleep(10);
 
-	lcd_write_cmd(0x08	/* set display mode */
-		      | ((lcd.flags & LCD_FLAG_D) ? 4 : 0)
-		      | ((lcd.flags & LCD_FLAG_C) ? 2 : 0)
-		      | ((lcd.flags & LCD_FLAG_B) ? 1 : 0)
+	lcd_write_cmd(LCD_CMD_DISPLAY_CTRL	/* set display mode */
+		      | ((lcd.flags & LCD_FLAG_D) ? LCD_CMD_DISPLAY_ON : 0)
+		      | ((lcd.flags & LCD_FLAG_C) ? LCD_CMD_CURSOR_ON : 0)
+		      | ((lcd.flags & LCD_FLAG_B) ? LCD_CMD_BLINK_ON : 0)
 	    );
 
 	lcd_backlight((lcd.flags & LCD_FLAG_L) ? 1 : 0);
@@ -1035,7 +1059,7 @@
 	long_sleep(10);
 
 	/* entry mode set : increment, cursor shifting */
-	lcd_write_cmd(0x06);
+	lcd_write_cmd(LCD_CMD_ENTRY_MODE | LCD_CMD_CURSOR_INC);
 
 	lcd_clear_display();
 }
@@ -1119,7 +1143,7 @@
 		if (lcd.addr.x > 0) {
 			/* back one char if not at end of line */
 			if (lcd.addr.x < lcd.bwidth)
-				lcd_write_cmd(0x10);
+				lcd_write_cmd(LCD_CMD_SHIFT);
 			lcd.addr.x--;
 		}
 		processed = 1;
@@ -1127,21 +1151,20 @@
 	case 'r':	/* shift cursor right */
 		if (lcd.addr.x < lcd.width) {
 			/* allow the cursor to pass the end of the line */
-			if (lcd.addr.x <
-			    (lcd.bwidth - 1))
-				lcd_write_cmd(0x14);
+			if (lcd.addr.x < (lcd.bwidth - 1))
+				lcd_write_cmd(LCD_CMD_SHIFT |
+						LCD_CMD_SHIFT_RIGHT);
 			lcd.addr.x++;
 		}
 		processed = 1;
 		break;
 	case 'L':	/* shift display left */
-		lcd.left_shift++;
-		lcd_write_cmd(0x18);
+		lcd_write_cmd(LCD_CMD_SHIFT | LCD_CMD_DISPLAY_SHIFT);
 		processed = 1;
 		break;
 	case 'R':	/* shift display right */
-		lcd.left_shift--;
-		lcd_write_cmd(0x1C);
+		lcd_write_cmd(LCD_CMD_SHIFT | LCD_CMD_DISPLAY_SHIFT |
+				LCD_CMD_SHIFT_RIGHT);
 		processed = 1;
 		break;
 	case 'k': {	/* kill end of line */
@@ -1157,7 +1180,6 @@
 	}
 	case 'I':	/* reinitialize display */
 		lcd_init_display();
-		lcd.left_shift = 0;
 		processed = 1;
 		break;
 	case 'G': {
@@ -1211,7 +1233,7 @@
 			esc++;
 		}
 
-		lcd_write_cmd(0x40 | (cgaddr * 8));
+		lcd_write_cmd(LCD_CMD_SET_CGRAM_ADDR | (cgaddr * 8));
 		for (addr = 0; addr < cgoffset; addr++)
 			lcd_write_data(cgbytes[addr]);
 
@@ -1244,21 +1266,29 @@
 		break;
 	}
 
+	/* TODO: This indent party here got ugly, clean it! */
 	/* Check whether one flag was changed */
 	if (oldflags != lcd.flags) {
 		/* check whether one of B,C,D flags were changed */
 		if ((oldflags ^ lcd.flags) &
 		    (LCD_FLAG_B | LCD_FLAG_C | LCD_FLAG_D))
 			/* set display mode */
-			lcd_write_cmd(0x08
-				      | ((lcd.flags & LCD_FLAG_D) ? 4 : 0)
-				      | ((lcd.flags & LCD_FLAG_C) ? 2 : 0)
-				      | ((lcd.flags & LCD_FLAG_B) ? 1 : 0));
+			lcd_write_cmd(LCD_CMD_DISPLAY_CTRL
+				      | ((lcd.flags & LCD_FLAG_D)
+						      ? LCD_CMD_DISPLAY_ON : 0)
+				      | ((lcd.flags & LCD_FLAG_C)
+						      ? LCD_CMD_CURSOR_ON : 0)
+				      | ((lcd.flags & LCD_FLAG_B)
+						      ? LCD_CMD_BLINK_ON : 0));
 		/* check whether one of F,N flags was changed */
 		else if ((oldflags ^ lcd.flags) & (LCD_FLAG_F | LCD_FLAG_N))
-			lcd_write_cmd(0x30
-				      | ((lcd.flags & LCD_FLAG_F) ? 4 : 0)
-				      | ((lcd.flags & LCD_FLAG_N) ? 8 : 0));
+			lcd_write_cmd(LCD_CMD_FUNCTION_SET
+				      | LCD_CMD_DATA_LEN_8BITS
+				      | ((lcd.flags & LCD_FLAG_F)
+						      ? LCD_CMD_TWO_LINES : 0)
+				      | ((lcd.flags & LCD_FLAG_N)
+						      ? LCD_CMD_FONT_5X10_DOTS
+								      : 0));
 		/* check whether L flag was changed */
 		else if ((oldflags ^ lcd.flags) & (LCD_FLAG_L)) {
 			if (lcd.flags & (LCD_FLAG_L))
@@ -1297,13 +1327,13 @@
 				   end of the line */
 				if (lcd.addr.x < lcd.bwidth)
 					/* back one char */
-					lcd_write_cmd(0x10);
+					lcd_write_cmd(LCD_CMD_SHIFT);
 				lcd.addr.x--;
 			}
 			/* replace with a space */
 			lcd_write_data(' ');
 			/* back one char again */
-			lcd_write_cmd(0x10);
+			lcd_write_cmd(LCD_CMD_SHIFT);
 			break;
 		case '\014':
 			/* quickly clear the display */
diff --git a/drivers/staging/rtl8188eu/core/rtw_ap.c b/drivers/staging/rtl8188eu/core/rtw_ap.c
index d61842e..da19145 100644
--- a/drivers/staging/rtl8188eu/core/rtw_ap.c
+++ b/drivers/staging/rtl8188eu/core/rtw_ap.c
@@ -509,7 +509,7 @@
 		tx_ra_bitmap |= ((raid<<28)&0xf0000000);
 
 		DBG_88E("%s => mac_id:%d , raid:%d , bitmap = 0x%x, arg = 0x%x\n",
-			__func__ , psta->mac_id, raid , tx_ra_bitmap, arg);
+			__func__, psta->mac_id, raid, tx_ra_bitmap, arg);
 
 		/* bitmap[0:27] = tx_rate_bitmap */
 		/* bitmap[28:31]= Rate Adaptive id */
diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
index e4b7ee4c..28918201 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
@@ -577,13 +577,14 @@
 	uint len = precv_frame->len;
 	struct wlan_bssid_ex *pbss;
 	int ret = _SUCCESS;
+	struct wlan_bssid_ex *pnetwork = &(pmlmeinfo->network);
 
 	if (pmlmeext->sitesurvey_res.state == SCAN_PROCESS) {
 		report_survey_event(padapter, precv_frame);
 		return _SUCCESS;
 	}
 
-	if (!memcmp(GetAddr3Ptr(pframe), get_my_bssid(&pmlmeinfo->network), ETH_ALEN)) {
+	if (!memcmp(GetAddr3Ptr(pframe), pnetwork->MacAddress, ETH_ALEN)) {
 		if (pmlmeinfo->state & WIFI_FW_AUTH_NULL) {
 			/* we should update current network before auth, or some IE is wrong */
 			pbss = (struct wlan_bssid_ex *)rtw_malloc(sizeof(struct wlan_bssid_ex));
@@ -1445,10 +1446,10 @@
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
 	u8 *pframe = precv_frame->rx_data;
+	struct wlan_bssid_ex *pnetwork = &(pmlmeinfo->network);
 
 	/* check A3 */
-	if (memcmp(GetAddr3Ptr(pframe), get_my_bssid(&pmlmeinfo->network),
-		   ETH_ALEN))
+	if (memcmp(GetAddr3Ptr(pframe), pnetwork->MacAddress, ETH_ALEN))
 		return _SUCCESS;
 
 	reason = le16_to_cpu(*(__le16 *)(pframe + WLAN_HDR_A3_LEN));
@@ -1499,10 +1500,10 @@
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
 	u8 *pframe = precv_frame->rx_data;
+	struct wlan_bssid_ex *pnetwork = &(pmlmeinfo->network);
 
 	/* check A3 */
-	if (memcmp(GetAddr3Ptr(pframe), get_my_bssid(&pmlmeinfo->network),
-		   ETH_ALEN))
+	if (memcmp(GetAddr3Ptr(pframe), pnetwork->MacAddress, ETH_ALEN))
 		return _SUCCESS;
 
 	reason = le16_to_cpu(*(__le16 *)(pframe + WLAN_HDR_A3_LEN));
@@ -2018,7 +2019,7 @@
 
 	memcpy(pwlanhdr->addr1, bc_addr, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(cur_network), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, cur_network->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, 0/*pmlmeext->mgnt_seq*/);
 	/* pmlmeext->mgnt_seq++; */
@@ -2422,6 +2423,7 @@
 	struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
 	struct mlme_ext_priv	*pmlmeext = &(padapter->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
 	if (pmgntframe == NULL)
@@ -2487,9 +2489,9 @@
 	} else {
 		__le32 le_tmp32;
 		__le16 le_tmp16;
-		memcpy(pwlanhdr->addr1, get_my_bssid(&pmlmeinfo->network), ETH_ALEN);
+		memcpy(pwlanhdr->addr1, pnetwork->MacAddress, ETH_ALEN);
 		memcpy(pwlanhdr->addr2, myid(&padapter->eeprompriv), ETH_ALEN);
-		memcpy(pwlanhdr->addr3, get_my_bssid(&pmlmeinfo->network), ETH_ALEN);
+		memcpy(pwlanhdr->addr3, pnetwork->MacAddress, ETH_ALEN);
 
 		/*  setting auth algo number */
 		val16 = (pmlmeinfo->auth_algo == dot11AuthAlgrthm_Shared) ? 1 : 0;/*  0:OPEN System, 1:Shared key */
@@ -2582,7 +2584,7 @@
 
 	memcpy((void *)GetAddr1Ptr(pwlanhdr), pstat->hwaddr, ETH_ALEN);
 	memcpy((void *)GetAddr2Ptr(pwlanhdr), myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy((void *)GetAddr3Ptr(pwlanhdr), get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy((void *)GetAddr3Ptr(pwlanhdr), pnetwork->MacAddress, ETH_ALEN);
 
 
 	SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
@@ -2687,6 +2689,7 @@
 	struct mlme_ext_priv	*pmlmeext = &(padapter->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
 	int	bssrate_len = 0, sta_bssrate_len = 0;
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
 	if (pmgntframe == NULL)
@@ -2702,9 +2705,9 @@
 
 	fctrl = &(pwlanhdr->frame_ctl);
 	*(fctrl) = 0;
-	memcpy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr1, pnetwork->MacAddress, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, pnetwork->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
 	pmlmeext->mgnt_seq++;
@@ -2879,6 +2882,7 @@
 	struct xmit_priv	*pxmitpriv;
 	struct mlme_ext_priv	*pmlmeext;
 	struct mlme_ext_info	*pmlmeinfo;
+	struct wlan_bssid_ex    *pnetwork;
 
 	if (!padapter)
 		goto exit;
@@ -2886,6 +2890,7 @@
 	pxmitpriv = &(padapter->xmitpriv);
 	pmlmeext = &(padapter->mlmeextpriv);
 	pmlmeinfo = &(pmlmeext->mlmext_info);
+	pnetwork = &(pmlmeinfo->network);
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
 	if (pmgntframe == NULL)
@@ -2914,7 +2919,7 @@
 
 	memcpy(pwlanhdr->addr1, da, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, pnetwork->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
 	pmlmeext->mgnt_seq++;
@@ -2946,10 +2951,11 @@
 	u32 start = jiffies;
 	struct mlme_ext_priv	*pmlmeext = &(padapter->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 
 	/* da == NULL, assume it's null data for sta to ap*/
 	if (da == NULL)
-		da = get_my_bssid(&(pmlmeinfo->network));
+		da = pnetwork->MacAddress;
 
 	do {
 		ret = _issue_nulldata(padapter, da, power_mode, wait_ms > 0 ? true : false);
@@ -2995,6 +3001,7 @@
 	struct xmit_priv			*pxmitpriv = &(padapter->xmitpriv);
 	struct mlme_ext_priv	*pmlmeext = &(padapter->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 
 	DBG_88E("%s\n", __func__);
 
@@ -3038,7 +3045,7 @@
 
 	memcpy(pwlanhdr->addr1, da, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, pnetwork->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
 	pmlmeext->mgnt_seq++;
@@ -3069,10 +3076,11 @@
 	u32 start = jiffies;
 	struct mlme_ext_priv	*pmlmeext = &(padapter->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 
 	/* da == NULL, assume it's null data for sta to ap*/
 	if (da == NULL)
-		da = get_my_bssid(&(pmlmeinfo->network));
+		da = pnetwork->MacAddress;
 
 	do {
 		ret = _issue_qos_nulldata(padapter, da, tid, wait_ms > 0 ? true : false);
@@ -3115,6 +3123,7 @@
 	struct xmit_priv			*pxmitpriv = &(padapter->xmitpriv);
 	struct mlme_ext_priv	*pmlmeext = &(padapter->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 	int ret = _FAIL;
 	__le16 le_tmp;
 
@@ -3137,7 +3146,7 @@
 
 	memcpy(pwlanhdr->addr1, da, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, pnetwork->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
 	pmlmeext->mgnt_seq++;
@@ -3288,6 +3297,7 @@
 	struct sta_info *psta;
 	struct sta_priv *pstapriv = &padapter->stapriv;
 	struct registry_priv *pregpriv = &padapter->registrypriv;
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 
 	DBG_88E("%s, category=%d, action=%d, status=%d\n", __func__, category, action, status);
 
@@ -3310,7 +3320,7 @@
 	/* memcpy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN); */
 	memcpy(pwlanhdr->addr1, raddr, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, pnetwork->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
 	pmlmeext->mgnt_seq++;
@@ -3420,6 +3430,8 @@
 	struct __queue *queue	= &(pmlmepriv->scanned_queue);
 	u8 InfoContent[16] = {0};
 	u8 ICS[8][15];
+	struct wlan_bssid_ex  *cur_network   = &(pmlmeinfo->network);
+
 	if ((pmlmepriv->num_FortyMHzIntolerant == 0) || (pmlmepriv->num_sta_no_ht == 0))
 		return;
 
@@ -3449,9 +3461,9 @@
 	fctrl = &(pwlanhdr->frame_ctl);
 	*(fctrl) = 0;
 
-	memcpy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr1, cur_network->MacAddress, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, cur_network->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
 	pmlmeext->mgnt_seq++;
@@ -4042,9 +4054,10 @@
 {
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
+	struct wlan_bssid_ex    *pnetwork = &(pmlmeinfo->network);
 
 	/* check A3 */
-	if (memcmp(MacAddr, get_my_bssid(&pmlmeinfo->network), ETH_ALEN))
+	if (memcmp(MacAddr, pnetwork->MacAddress, ETH_ALEN))
 		return _SUCCESS;
 
 	DBG_88E("%s\n", __func__);
@@ -4924,11 +4937,6 @@
 	}
 }
 
-u8 NULL_hdl(struct adapter *padapter, u8 *pbuf)
-{
-	return H2C_SUCCESS;
-}
-
 u8 setopmode_hdl(struct adapter *padapter, u8 *pbuf)
 {
 	u8 type;
diff --git a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
index 324c1a7..3e9b6e9 100644
--- a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
+++ b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
@@ -405,11 +405,6 @@
 		return 0;
 }
 
-__inline u8 *get_my_bssid(struct wlan_bssid_ex *pnetwork)
-{
-	return pnetwork->MacAddress;
-}
-
 u16 get_beacon_interval(struct wlan_bssid_ex *bss)
 {
 	__le16 val;
diff --git a/drivers/staging/rtl8188eu/hal/rtl8188e_cmd.c b/drivers/staging/rtl8188eu/hal/rtl8188e_cmd.c
index 7f30dea..86347f2 100644
--- a/drivers/staging/rtl8188eu/hal/rtl8188e_cmd.c
+++ b/drivers/staging/rtl8188eu/hal/rtl8188e_cmd.c
@@ -127,22 +127,6 @@
 	return ret;
 }
 
-u8 rtl8188e_set_rssi_cmd(struct adapter *adapt, u8 *param)
-{
-	u8 res = _SUCCESS;
-	struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
-
-	if (haldata->fw_ractrl) {
-		;
-	} else {
-		DBG_88E("==>%s fw dont support RA\n", __func__);
-		res = _FAIL;
-	}
-
-
-	return res;
-}
-
 u8 rtl8188e_set_raid_cmd(struct adapter *adapt, u32 mask)
 {
 	u8 buf[3];
@@ -276,7 +260,7 @@
 
 	memcpy(pwlanhdr->addr1, bc_addr, ETH_ALEN);
 	memcpy(pwlanhdr->addr2, myid(&(adapt->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(cur_network), ETH_ALEN);
+	memcpy(pwlanhdr->addr3, cur_network->MacAddress, ETH_ALEN);
 
 	SetSeqNum(pwlanhdr, 0/*pmlmeext->mgnt_seq*/);
 	SetFrameSubType(pframe, WIFI_BEACON);
@@ -350,6 +334,7 @@
 	struct mlme_ext_priv *pmlmeext = &(adapt->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
 	__le16 *fctrl;
+	struct wlan_bssid_ex *pnetwork = &(pmlmeinfo->network);
 
 	pwlanhdr = (struct rtw_ieee80211_hdr *)pframe;
 
@@ -363,7 +348,7 @@
 	SetDuration(pframe, (pmlmeinfo->aid | 0xc000));
 
 	/*  BSSID. */
-	memcpy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	memcpy(pwlanhdr->addr1, pnetwork->MacAddress, ETH_ALEN);
 
 	/*  TA. */
 	memcpy(pwlanhdr->addr2, myid(&(adapt->eeprompriv)), ETH_ALEN);
@@ -386,6 +371,7 @@
 	struct wlan_network		*cur_network = &pmlmepriv->cur_network;
 	struct mlme_ext_priv *pmlmeext = &(adapt->mlmeextpriv);
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
+	struct wlan_bssid_ex *pnetwork = &(pmlmeinfo->network);
 
 	pwlanhdr = (struct rtw_ieee80211_hdr *)pframe;
 
@@ -397,21 +383,21 @@
 	switch (cur_network->network.InfrastructureMode) {
 	case Ndis802_11Infrastructure:
 		SetToDs(fctrl);
-		memcpy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+		memcpy(pwlanhdr->addr1, pnetwork->MacAddress, ETH_ALEN);
 		memcpy(pwlanhdr->addr2, myid(&(adapt->eeprompriv)), ETH_ALEN);
 		memcpy(pwlanhdr->addr3, StaAddr, ETH_ALEN);
 		break;
 	case Ndis802_11APMode:
 		SetFrDs(fctrl);
 		memcpy(pwlanhdr->addr1, StaAddr, ETH_ALEN);
-		memcpy(pwlanhdr->addr2, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+		memcpy(pwlanhdr->addr2, pnetwork->MacAddress, ETH_ALEN);
 		memcpy(pwlanhdr->addr3, myid(&(adapt->eeprompriv)), ETH_ALEN);
 		break;
 	case Ndis802_11IBSS:
 	default:
 		memcpy(pwlanhdr->addr1, StaAddr, ETH_ALEN);
 		memcpy(pwlanhdr->addr2, myid(&(adapt->eeprompriv)), ETH_ALEN);
-		memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+		memcpy(pwlanhdr->addr3, pnetwork->MacAddress, ETH_ALEN);
 		break;
 	}
 
@@ -498,6 +484,7 @@
 	u16 BufIndex;
 	u32 TotalPacketLen;
 	struct rsvdpage_loc RsvdPageLoc;
+	struct wlan_bssid_ex *pnetwork;
 
 	DBG_88E("%s\n", __func__);
 	ReservedPagePacket = kzalloc(1000, GFP_KERNEL);
@@ -510,6 +497,7 @@
 	pxmitpriv = &adapt->xmitpriv;
 	pmlmeext = &adapt->mlmeextpriv;
 	pmlmeinfo = &pmlmeext->mlmext_info;
+	pnetwork = &(pmlmeinfo->network);
 
 	TxDescLen = TXDESC_SIZE;
 	PageNum = 0;
@@ -541,7 +529,7 @@
 
 	/* 3 (3) null data * 1 page */
 	RsvdPageLoc.LocNullData = PageNum;
-	ConstructNullFunctionData(adapt, &ReservedPagePacket[BufIndex], &NullDataLength, get_my_bssid(&pmlmeinfo->network), false, 0, 0, false);
+	ConstructNullFunctionData(adapt, &ReservedPagePacket[BufIndex], &NullDataLength, pnetwork->MacAddress, false, 0, 0, false);
 	rtl8188e_fill_fake_txdesc(adapt, &ReservedPagePacket[BufIndex-TxDescLen], NullDataLength, false, false);
 
 	PageNeed = (u8)PageNum_128(TxDescLen + NullDataLength);
@@ -551,7 +539,7 @@
 
 	/* 3 (4) probe response * 1page */
 	RsvdPageLoc.LocProbeRsp = PageNum;
-	ConstructProbeRsp(adapt, &ReservedPagePacket[BufIndex], &ProbeRspLength, get_my_bssid(&pmlmeinfo->network), false);
+	ConstructProbeRsp(adapt, &ReservedPagePacket[BufIndex], &ProbeRspLength, pnetwork->MacAddress, false);
 	rtl8188e_fill_fake_txdesc(adapt, &ReservedPagePacket[BufIndex-TxDescLen], ProbeRspLength, false, false);
 
 	PageNeed = (u8)PageNum_128(TxDescLen + ProbeRspLength);
@@ -562,7 +550,7 @@
 	/* 3 (5) Qos null data */
 	RsvdPageLoc.LocQosNull = PageNum;
 	ConstructNullFunctionData(adapt, &ReservedPagePacket[BufIndex],
-				  &QosNullLength, get_my_bssid(&pmlmeinfo->network), true, 0, 0, false);
+				  &QosNullLength, pnetwork->MacAddress, true, 0, 0, false);
 	rtl8188e_fill_fake_txdesc(adapt, &ReservedPagePacket[BufIndex-TxDescLen], QosNullLength, false, false);
 
 	PageNeed = (u8)PageNum_128(TxDescLen + QosNullLength);
diff --git a/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c b/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c
index 7d460ea..3222d8d 100644
--- a/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c
+++ b/drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c
@@ -242,20 +242,6 @@
 	pHalFunc->hal_notch_filter = &hal_notch_filter_8188e;
 }
 
-u8 GetEEPROMSize8188E(struct adapter *padapter)
-{
-	u8 size = 0;
-	u32	cr;
-
-	cr = usb_read16(padapter, REG_9346CR);
-	/*  6: EEPROM used is 93C46, 4: boot from E-Fuse. */
-	size = (cr & BOOT_FROM_EEPROM) ? 6 : 4;
-
-	MSG_88E("EEPROM type is %s\n", size == 4 ? "E-FUSE" : "93C46");
-
-	return size;
-}
-
 /*  */
 /*  */
 /*  LLT R/W/Init function */
diff --git a/drivers/staging/rtl8188eu/include/rtl8188e_cmd.h b/drivers/staging/rtl8188eu/include/rtl8188e_cmd.h
index 0e78e2a..42b1f22 100644
--- a/drivers/staging/rtl8188eu/include/rtl8188e_cmd.h
+++ b/drivers/staging/rtl8188eu/include/rtl8188e_cmd.h
@@ -107,7 +107,6 @@
 /*  host message to firmware cmd */
 void rtl8188e_set_FwPwrMode_cmd(struct adapter *padapter, u8 Mode);
 void rtl8188e_set_FwJoinBssReport_cmd(struct adapter *padapter, u8 mstatus);
-u8 rtl8188e_set_rssi_cmd(struct adapter *padapter, u8 *param);
 u8 rtl8188e_set_raid_cmd(struct adapter *padapter, u32 mask);
 void rtl8188e_Add_RateATid(struct adapter *padapter, u32 bitmap, u8 arg,
 			   u8 rssi_level);
diff --git a/drivers/staging/rtl8188eu/include/rtl8188e_hal.h b/drivers/staging/rtl8188eu/include/rtl8188e_hal.h
index 42ab1d2..b8c42ee 100644
--- a/drivers/staging/rtl8188eu/include/rtl8188e_hal.h
+++ b/drivers/staging/rtl8188eu/include/rtl8188e_hal.h
@@ -391,7 +391,6 @@
 s32 InitLLTTable(struct adapter *padapter, u8 txpktbuf_bndy);
 
 /*  EFuse */
-u8 GetEEPROMSize8188E(struct adapter *padapter);
 void Hal_InitPGData88E(struct adapter *padapter);
 void Hal_EfuseParseIDCode88E(struct adapter *padapter, u8 *hwinfo);
 void Hal_ReadTxPowerInfo88E(struct adapter *padapter, u8 *hwinfo,
diff --git a/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h b/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
index 8d72ccf..4f05aee 100644
--- a/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
+++ b/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
@@ -496,7 +496,6 @@
 		    struct adapter *adapter, bool update_ie);
 
 int get_bsstype(unsigned short capability);
-u8 *get_my_bssid(struct wlan_bssid_ex *pnetwork);
 u16 get_beacon_interval(struct wlan_bssid_ex *bss);
 
 int is_client_associated_to_ap(struct adapter *padapter);
@@ -516,7 +515,7 @@
 void VCS_update(struct adapter *padapter, struct sta_info *psta);
 
 void update_beacon_info(struct adapter *padapter, u8 *pframe, uint len,
-		        struct sta_info *psta);
+			struct sta_info *psta);
 int rtw_check_bcn_info(struct adapter  *Adapter, u8 *pframe, u32 packet_len);
 void update_IOT_info(struct adapter *padapter);
 void update_capinfo(struct adapter *adapter, u16 updatecap);
@@ -679,7 +678,6 @@
 u8 write_bbreg_hdl(struct adapter *padapter, u8 *pbuf);
 u8 read_rfreg_hdl(struct adapter *padapter, u8 *pbuf);
 u8 write_rfreg_hdl(struct adapter *padapter, u8 *pbuf);
-u8 NULL_hdl(struct adapter *padapter, u8 *pbuf);
 u8 join_cmd_hdl(struct adapter *padapter, u8 *pbuf);
 u8 disconnect_hdl(struct adapter *padapter, u8 *pbuf);
 u8 createbss_hdl(struct adapter *padapter, u8 *pbuf);
diff --git a/drivers/staging/rtl8188eu/include/usb_ops_linux.h b/drivers/staging/rtl8188eu/include/usb_ops_linux.h
index 01b3810..4fdc536 100644
--- a/drivers/staging/rtl8188eu/include/usb_ops_linux.h
+++ b/drivers/staging/rtl8188eu/include/usb_ops_linux.h
@@ -79,7 +79,6 @@
 int usb_write8(struct adapter *adapter, u32 addr, u8 val);
 int usb_write16(struct adapter *adapter, u32 addr, u16 val);
 int usb_write32(struct adapter *adapter, u32 addr, u32 val);
-int usb_writeN(struct adapter *adapter, u32 addr, u32 length, u8 *pdata);
 
 u32 usb_write_port(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
 void usb_write_port_cancel(struct adapter *adapter);
diff --git a/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c b/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
index d2efa9d..80e7ef9 100644
--- a/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
@@ -615,33 +615,6 @@
 	return ret;
 }
 
-int usb_writeN(struct adapter *adapter, u32 addr, u32 length, u8 *pdata)
-{
-	u8 request;
-	u8 requesttype;
-	u16 wvalue;
-	u16 index;
-	u16 len;
-	u8 buf[VENDOR_CMD_MAX_DATA_LEN] = {0};
-	int ret;
-
-
-	request = 0x05;
-	requesttype = 0x00;/* write_out */
-	index = 0;/* n/a */
-
-	wvalue = (u16)(addr&0x0000ffff);
-	len = length;
-	 memcpy(buf, pdata, len);
-
-	ret = usbctrl_vendorreq(adapter, request, wvalue, index, buf, len, requesttype);
-
-
-	return RTW_STATUS_CODE(ret);
-}
-
-
-
 static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
 {
 	struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c
index 6c64e08..89ea70b 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c
@@ -167,35 +167,6 @@
 	RT_TRACE(COMP_SEC, "=========>after set key, usconfig:%x\n", usConfig);
 }
 
-void CAM_read_entry(struct net_device *dev, u32 iIndex)
-{
-	u32 target_command = 0;
-	u32 target_content = 0;
-	u8 entry_i = 0;
-	u32 ulStatus;
-	s32 i = 100;
-
-	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
-		target_command = entry_i+CAM_CONTENT_COUNT*iIndex;
-		target_command = target_command | BIT31;
-
-		while ((i--) >= 0) {
-			ulStatus = read_nic_dword(dev, RWCAM);
-			if (ulStatus & BIT31)
-				continue;
-			else
-				break;
-		}
-		write_nic_dword(dev, RWCAM, target_command);
-		RT_TRACE(COMP_SEC, "CAM_read_entry(): WRITE A0: %x\n",
-			 target_command);
-		target_content = read_nic_dword(dev, RCAMO);
-		RT_TRACE(COMP_SEC, "CAM_read_entry(): WRITE A8: %x\n",
-			 target_content);
-	}
-	printk(KERN_INFO "\n");
-}
-
 void CamRestoreAllEntry(struct net_device *dev)
 {
 	u8 EntryId = 0;
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h
index 7d075d3..3c4c0e6 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.h
@@ -41,6 +41,4 @@
 
 void CamRestoreAllEntry(struct net_device *dev);
 
-void CAM_read_entry(struct net_device *dev, u32 iIndex);
-
 #endif
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_dm.c b/drivers/staging/rtl8192e/rtl8192e/rtl_dm.c
index 885315c..b8891c6 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_dm.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_dm.c
@@ -1661,8 +1661,8 @@
 		dm_digtable.rssi_low_thresh = dm_value;
 	} else if (dm_type == DIG_TYPE_THRESH_HIGHPWR_HIGH) {
 		dm_digtable.rssi_high_power_highthresh = dm_value;
-	} else if (dm_type == DIG_TYPE_THRESH_HIGHPWR_HIGH) {
-		dm_digtable.rssi_high_power_highthresh = dm_value;
+	} else if (dm_type == DIG_TYPE_THRESH_HIGHPWR_LOW) {
+		dm_digtable.rssi_high_power_lowthresh = dm_value;
 	} else if (dm_type == DIG_TYPE_ENABLE) {
 		dm_digtable.dig_state		= DM_STA_DIG_MAX;
 		dm_digtable.dig_enable_flag	= true;
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_pm.c b/drivers/staging/rtl8192e/rtl8192e/rtl_pm.c
index 8e1a5d5..0b4f764 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_pm.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_pm.c
@@ -22,12 +22,6 @@
 #include "r8190P_rtl8256.h"
 #include "rtl_pm.h"
 
-int rtl8192E_save_state(struct pci_dev *dev, pm_message_t state)
-{
-	printk(KERN_NOTICE "r8192E save state call (state %u).\n", state.event);
-	return -EAGAIN;
-}
-
 
 int rtl8192E_suspend(struct pci_dev *pdev, pm_message_t state)
 {
@@ -124,11 +118,3 @@
 	return 0;
 }
 
-
-int rtl8192E_enable_wake(struct pci_dev *dev, pm_message_t state, int enable)
-{
-	printk(KERN_NOTICE "r8192E enable wake call (state %u, enable %d).\n",
-	       state.event, enable);
-	return -EAGAIN;
-}
-
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_pm.h b/drivers/staging/rtl8192e/rtl8192e/rtl_pm.h
index e5299fc..7bfe448 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_pm.h
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_pm.h
@@ -23,9 +23,7 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 
-int rtl8192E_save_state(struct pci_dev *dev, pm_message_t state);
 int rtl8192E_suspend(struct pci_dev *dev, pm_message_t state);
 int rtl8192E_resume(struct pci_dev *dev);
-int rtl8192E_enable_wake(struct pci_dev *dev, pm_message_t state, int enable);
 
 #endif
diff --git a/drivers/staging/rtl8192e/rtl819x_HTProc.c b/drivers/staging/rtl8192e/rtl819x_HTProc.c
index c7f4508..1ea426b 100644
--- a/drivers/staging/rtl8192e/rtl819x_HTProc.c
+++ b/drivers/staging/rtl8192e/rtl819x_HTProc.c
@@ -34,13 +34,13 @@
 	 468, 520, 0, 78, 104, 130, 117, 156, 195, 104, 130, 130, 156, 182,
 	 182, 208, 156, 195, 195, 234, 273, 273, 312, 130, 156, 181, 156,
 	 181, 208, 234, 208, 234, 260, 260, 286, 195, 234, 273, 234, 273,
-	 312, 351, 312, 351, 390, 390, 429} ,
+	 312, 351, 312, 351, 390, 390, 429},
 	{14, 29, 43, 58, 87, 116, 130, 144, 29, 58, 87, 116, 173, 231, 260, 289,
 	 43, 87, 130, 173, 260, 347, 390, 433, 58, 116, 173, 231, 347, 462, 520,
 	 578, 0, 87, 116, 144, 130, 173, 217, 116, 144, 144, 173, 202, 202, 231,
 	 173, 217, 217, 260, 303, 303, 347, 144, 173, 202, 173, 202, 231, 260,
 	 231, 260, 289, 289, 318, 217, 260, 303, 260, 303, 347, 390, 347, 390,
-	 433, 433, 477} } ,
+	 433, 433, 477} },
 	{{27, 54, 81, 108, 162, 216, 243, 270, 54, 108, 162, 216, 324, 432, 486,
 	 540, 81, 162, 243, 324, 486, 648, 729, 810, 108, 216, 324, 432, 648,
 	 864, 972, 1080, 12, 162, 216, 270, 243, 324, 405, 216, 270, 270, 324,
diff --git a/drivers/staging/rtl8192e/rtllib_rx.c b/drivers/staging/rtl8192e/rtllib_rx.c
index cf11b04..1664040 100644
--- a/drivers/staging/rtl8192e/rtllib_rx.c
+++ b/drivers/staging/rtl8192e/rtllib_rx.c
@@ -70,8 +70,7 @@
 		if (entry->skb != NULL &&
 		    time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
 			RTLLIB_DEBUG_FRAG(
-				"expiring fragment cache entry "
-				"seq=%u last_frag=%u\n",
+				"expiring fragment cache entry seq=%u last_frag=%u\n",
 				entry->seq, entry->last_frag);
 			dev_kfree_skb_any(entry->skb);
 			entry->skb = NULL;
@@ -188,8 +187,7 @@
 
 	if (entry == NULL) {
 		RTLLIB_DEBUG_FRAG(
-			"could not invalidate fragment cache "
-			"entry (seq=%u)\n", seq);
+			"could not invalidate fragment cache entry (seq=%u)\n", seq);
 		return -1;
 	}
 
@@ -305,11 +303,9 @@
 	atomic_dec(&crypt->refcnt);
 	if (res < 0) {
 		RTLLIB_DEBUG_DROP(
-			"decryption failed (SA= %pM"
-			") res=%d\n", hdr->addr2, res);
+			"decryption failed (SA= %pM) res=%d\n", hdr->addr2, res);
 		if (res == -2)
-			RTLLIB_DEBUG_DROP("Decryption failed ICV "
-					     "mismatch (key %d)\n",
+			RTLLIB_DEBUG_DROP("Decryption failed ICV mismatch (key %d)\n",
 					     skb->data[hdrlen + 3] >> 6);
 		ieee->ieee_stats.rx_discards_undecryptable++;
 		return -1;
@@ -345,8 +341,7 @@
 	res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
 	atomic_dec(&crypt->refcnt);
 	if (res < 0) {
-		printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
-		       " (SA= %pM keyidx=%d)\n",
+		printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed (SA= %pM keyidx=%d)\n",
 		       ieee->dev->name, hdr->addr2, keyidx);
 		return -1;
 	}
@@ -559,8 +554,7 @@
 	bool bMatchWinStart = false, bPktInBuf = false;
 	unsigned long flags;
 
-	RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Seq is %d, pTS->RxIndicateSeq"
-		     " is %d, WinSize is %d\n", __func__, SeqNum,
+	RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Seq is %d, pTS->RxIndicateSeq is %d, WinSize is %d\n", __func__, SeqNum,
 		     pTS->RxIndicateSeq, WinSize);
 
 	spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
@@ -600,8 +594,7 @@
 			pTS->RxIndicateSeq = SeqNum + 1 - WinSize;
 		else
 			pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum + 1)) + 1;
-		RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Window Shift! IndicateSeq: %d,"
-			     " NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum);
+		RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum);
 	}
 
 	/*
@@ -617,8 +610,7 @@
 	 */
 	if (bMatchWinStart) {
 		/* Current packet is going to be indicated.*/
-		RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packets indication!! "
-				"IndicateSeq: %d, NewSeq: %d\n",
+		RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packets indication!! IndicateSeq: %d, NewSeq: %d\n",
 				pTS->RxIndicateSeq, SeqNum);
 		ieee->prxbIndicateArray[0] = prxb;
 		index = 1;
@@ -636,9 +628,7 @@
 
 			if (!AddReorderEntry(pTS, pReorderEntry)) {
 				RTLLIB_DEBUG(RTLLIB_DL_REORDER,
-					     "%s(): Duplicate packet is "
-					     "dropped!! IndicateSeq: %d, "
-					     "NewSeq: %d\n",
+					     "%s(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n",
 					    __func__, pTS->RxIndicateSeq,
 					    SeqNum);
 				list_add_tail(&pReorderEntry->List,
@@ -652,8 +642,7 @@
 				}
 			} else {
 				RTLLIB_DEBUG(RTLLIB_DL_REORDER,
-					 "Pkt insert into struct buffer!! "
-					 "IndicateSeq: %d, NewSeq: %d\n",
+					 "Pkt insert into struct buffer!! IndicateSeq: %d, NewSeq: %d\n",
 					 pTS->RxIndicateSeq, SeqNum);
 			}
 		} else {
@@ -663,9 +652,7 @@
 			 * indicate all the packets in struct buffer and get
 			 * reorder entries.
 			 */
-			RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket():"
-				     " There is no reorder entry!! Packet is "
-				     "dropped!!\n");
+			RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket(): There is no reorder entry!! Packet is dropped!!\n");
 			{
 				int i;
 
@@ -687,8 +674,7 @@
 				SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) {
 			/* This protect struct buffer from overflow. */
 			if (index >= REORDER_WIN_SIZE) {
-				RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicate"
-					     "Packet(): Buffer overflow!!\n");
+				RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket(): Buffer overflow!!\n");
 				bPktInBuf = true;
 				break;
 			}
@@ -699,8 +685,7 @@
 				pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
 
 			ieee->prxbIndicateArray[index] = pReorderEntry->prxb;
-			RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum"
-				     " %d!\n", __func__, pReorderEntry->SeqNum);
+			RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum %d!\n", __func__, pReorderEntry->SeqNum);
 			index++;
 
 			list_add_tail(&pReorderEntry->List,
@@ -719,8 +704,7 @@
 		pTS->RxTimeoutIndicateSeq = 0xffff;
 
 		if (index > REORDER_WIN_SIZE) {
-			RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket():"
-				     " Rx Reorder struct buffer full!!\n");
+			RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket(): Rx Reorder struct buffer full!!\n");
 			spin_unlock_irqrestore(&(ieee->reorder_spinlock),
 					       flags);
 			return;
@@ -809,14 +793,11 @@
 					   (nSubframe_Length << 8);
 
 			if (skb->len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
-				printk(KERN_INFO "%s: A-MSDU parse error!! "
-				       "pRfd->nTotalSubframe : %d\n",\
+				printk(KERN_INFO "%s: A-MSDU parse error!! pRfd->nTotalSubframe : %d\n",\
 				       __func__, rxb->nr_subframes);
-				printk(KERN_INFO "%s: A-MSDU parse error!! "
-				       "Subframe Length: %d\n", __func__,
+				printk(KERN_INFO "%s: A-MSDU parse error!! Subframe Length: %d\n", __func__,
 				       nSubframe_Length);
-				printk(KERN_INFO "nRemain_Length is %d and "
-				       "nSubframe_Length is : %d\n", skb->len,
+				printk(KERN_INFO "nRemain_Length is %d and nSubframe_Length is : %d\n", skb->len,
 				       nSubframe_Length);
 				printk(KERN_INFO "The Packet SeqNum is %d\n", SeqNum);
 				return 0;
@@ -844,8 +825,7 @@
 			sub_skb->dev = ieee->dev;
 			rxb->subframes[rxb->nr_subframes++] = sub_skb;
 			if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
-				RTLLIB_DEBUG_RX("ParseSubframe(): Too many "
-						"Subframes! Packets dropped!\n");
+				RTLLIB_DEBUG_RX("ParseSubframe(): Too many Subframes! Packets dropped!\n");
 				break;
 			}
 			skb_pull(skb, nSubframe_Length);
@@ -922,8 +902,7 @@
 			pRxTS->RxLastFragNum = frag;
 			pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
 		} else {
-			RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!%s(): No TS!! Skip"
-				     " the check!!\n", __func__);
+			RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!%s(): No TS!! Skip the check!!\n", __func__);
 			return -1;
 		}
 	}
@@ -996,9 +975,7 @@
 		    stype != RTLLIB_STYPE_QOS_DATA) {
 			if (stype != RTLLIB_STYPE_NULLFUNC)
 				RTLLIB_DEBUG_DROP(
-					"RX: dropped data frame "
-					"with no data (type=0x%02x, "
-					"subtype=0x%02x)\n",
+					"RX: dropped data frame with no data (type=0x%02x, subtype=0x%02x)\n",
 					type, stype);
 			return -1;
 		}
@@ -1041,8 +1018,7 @@
 			 * frames from other than current BSS, so just drop the
 			 * frames silently instead of filling system log with
 			 * these reports. */
-			RTLLIB_DEBUG_DROP("Decryption failed (not set)"
-					     " (SA= %pM)\n",
+			RTLLIB_DEBUG_DROP("Decryption failed (not set) (SA= %pM)\n",
 					     hdr->addr2);
 			ieee->ieee_stats.rx_discards_undecryptable++;
 			return -1;
@@ -1086,8 +1062,7 @@
 
 		if (!frag_skb) {
 			RTLLIB_DEBUG(RTLLIB_DL_RX | RTLLIB_DL_FRAG,
-					"Rx cannot get skb from fragment "
-					"cache (morefrag=%d seq=%u frag=%u)\n",
+					"Rx cannot get skb from fragment cache (morefrag=%d seq=%u frag=%u)\n",
 					(fc & RTLLIB_FCTL_MOREFRAGS) != 0,
 					WLAN_GET_SEQ_SEQ(sc), frag);
 			return -1;
@@ -1097,8 +1072,7 @@
 			flen -= hdrlen;
 
 		if (frag_skb->tail + flen > frag_skb->end) {
-			printk(KERN_WARNING "%s: host decrypted and "
-			       "reassembled frame did not fit skb\n",
+			printk(KERN_WARNING "%s: host decrypted and reassembled frame did not fit skb\n",
 			       __func__);
 			rtllib_frag_cache_invalidate(ieee, hdr);
 			return -1;
@@ -1152,8 +1126,7 @@
 						eap_get_type(eap->type));
 		} else {
 			RTLLIB_DEBUG_DROP(
-				"encryption configured, but RX "
-				"frame not encrypted (SA= %pM)\n",
+				"encryption configured, but RX frame not encrypted (SA= %pM)\n",
 				hdr->addr2);
 			return -1;
 		}
@@ -1170,9 +1143,7 @@
 	if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep &&
 	    !rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
 		RTLLIB_DEBUG_DROP(
-			"dropped unencrypted RX data "
-			"frame from %pM"
-			" (drop_unencrypted=1)\n",
+			"dropped unencrypted RX data frame from %pM (drop_unencrypted=1)\n",
 			hdr->addr2);
 		return -1;
 	}
@@ -1762,9 +1733,7 @@
 
 	while (length >= sizeof(*info_element)) {
 		if (sizeof(*info_element) + info_element->len > length) {
-			RTLLIB_DEBUG_MGMT("Info elem: parse failed: "
-					     "info_element->len + 2 > left : "
-					     "info_element->len+2=%zd left=%d, id=%d.\n",
+			RTLLIB_DEBUG_MGMT("Info elem: parse failed: info_element->len + 2 > left : info_element->len+2=%zd left=%d, id=%d.\n",
 					     info_element->len +
 					     sizeof(*info_element),
 					     length, info_element->id);
@@ -2207,34 +2176,6 @@
 	return 0;
 }
 
-static inline u8 rtllib_SignalStrengthTranslate(u8  CurrSS)
-{
-	u8 RetSS;
-
-	if (CurrSS >= 71 && CurrSS <= 100)
-		RetSS = 90 + ((CurrSS - 70) / 3);
-	else if (CurrSS >= 41 && CurrSS <= 70)
-		RetSS = 78 + ((CurrSS - 40) / 3);
-	else if (CurrSS >= 31 && CurrSS <= 40)
-		RetSS = 66 + (CurrSS - 30);
-	else if (CurrSS >= 21 && CurrSS <= 30)
-		RetSS = 54 + (CurrSS - 20);
-	else if (CurrSS >= 5 && CurrSS <= 20)
-		RetSS = 42 + (((CurrSS - 5) * 2) / 3);
-	else if (CurrSS == 4)
-		RetSS = 36;
-	else if (CurrSS == 3)
-		RetSS = 27;
-	else if (CurrSS == 2)
-		RetSS = 18;
-	else if (CurrSS == 1)
-		RetSS = 9;
-	else
-		RetSS = CurrSS;
-
-	return RetSS;
-}
-
 static long rtllib_translate_todbm(u8 signal_strength_index)
 {
 	long	signal_power;
@@ -2321,8 +2262,7 @@
 	}
 
 	if (network->mode == 0) {
-		RTLLIB_DEBUG_SCAN("Filtered out '%s (%pM)' "
-				     "network.\n",
+		RTLLIB_DEBUG_SCAN("Filtered out '%s (%pM)' network.\n",
 				     escape_essid(network->ssid,
 						  network->ssid_len),
 				     network->bssid);
@@ -2363,13 +2303,6 @@
 		(dst->capability & WLAN_CAPABILITY_ESS)));
 }
 
-static inline void update_ibss_network(struct rtllib_network *dst,
-				  struct rtllib_network *src)
-{
-	memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_rx_stats));
-	dst->last_scanned = jiffies;
-}
-
 
 static inline void update_network(struct rtllib_network *dst,
 				  struct rtllib_network *src)
@@ -2568,8 +2501,7 @@
 	if (WLAN_FC_GET_STYPE(le16_to_cpu(beacon->header.frame_ctl)) ==
 	    RTLLIB_STYPE_PROBE_RESP) {
 		if (IsPassiveChannel(ieee, network->channel)) {
-			printk(KERN_INFO "GetScanInfo(): For Global Domain, "
-			       "filter probe response at channel(%d).\n",
+			printk(KERN_INFO "GetScanInfo(): For Global Domain, filter probe response at channel(%d).\n",
 			       network->channel);
 			goto free_network;
 		}
@@ -2618,8 +2550,7 @@
 			/* If there are no more slots, expire the oldest */
 			list_del(&oldest->list);
 			target = oldest;
-			RTLLIB_DEBUG_SCAN("Expired '%s' ( %pM) from "
-					     "network list.\n",
+			RTLLIB_DEBUG_SCAN("Expired '%s' ( %pM) from network list.\n",
 					     escape_essid(target->ssid,
 							  target->ssid_len),
 					     target->bssid);
diff --git a/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c b/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c
index cd196ce..a9fd2cb 100644
--- a/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c
+++ b/drivers/staging/rtl8192u/ieee80211/rtl819x_BAProc.c
@@ -114,9 +114,9 @@
 	u16 len = ieee->tx_headroom + 9;
 	//category(1) + action field(1) + Dialog Token(1) + BA Parameter Set(2) +  BA Timeout Value(2) +  BA Start SeqCtrl(2)(or StatusCode(2))
 	IEEE80211_DEBUG(IEEE80211_DL_TRACE | IEEE80211_DL_BA, "========>%s(), frame(%d) sentd to:%pM, ieee->dev:%p\n", __func__, type, Dst, ieee->dev);
-	if (pBA == NULL||ieee == NULL)
+	if (pBA == NULL)
 	{
-		IEEE80211_DEBUG(IEEE80211_DL_ERR, "pBA(%p) is NULL or ieee(%p) is NULL\n", pBA, ieee);
+		IEEE80211_DEBUG(IEEE80211_DL_ERR, "pBA is NULL\n");
 		return NULL;
 	}
 	skb = dev_alloc_skb(len + sizeof( struct ieee80211_hdr_3addr)); //need to add something others? FIXME
diff --git a/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c b/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c
index c4514109..acaa723 100644
--- a/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c
+++ b/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c
@@ -241,7 +241,7 @@
 {
 	//DIRECTION_VALUE	dir;
 	u8	dir;
-	bool				search_dir[4] = {0, 0, 0, 0};
+	bool				search_dir[4] = {0};
 	struct list_head		*psearch_list; //FIXME
 	PTS_COMMON_INFO	pRet = NULL;
 	if(ieee->iw_mode == IW_MODE_MASTER) //ap mode
diff --git a/drivers/staging/rtl8192u/r8190_rtl8256.c b/drivers/staging/rtl8192u/r8190_rtl8256.c
index 45514aa..1868352 100644
--- a/drivers/staging/rtl8192u/r8190_rtl8256.c
+++ b/drivers/staging/rtl8192u/r8190_rtl8256.c
@@ -23,7 +23,7 @@
  * Return:      NONE
  * Note:	8226 support both 20M  and 40 MHz
  *---------------------------------------------------------------------------*/
-void PHY_SetRF8256Bandwidth(struct net_device *dev , HT_CHANNEL_WIDTH Bandwidth)
+void PHY_SetRF8256Bandwidth(struct net_device *dev, HT_CHANNEL_WIDTH Bandwidth)
 {
 	u8	eRFPath;
 	struct r8192_priv *priv = ieee80211_priv(dev);
diff --git a/drivers/staging/rtl8192u/r8192U_dm.c b/drivers/staging/rtl8192u/r8192U_dm.c
index 936565d..b3b508c 100644
--- a/drivers/staging/rtl8192u/r8192U_dm.c
+++ b/drivers/staging/rtl8192u/r8192U_dm.c
@@ -480,15 +480,13 @@
 
 	if(priv->CurrentChannelBW == HT_CHANNEL_WIDTH_20 ||!priv->ieee80211->bandwidth_auto_switch.bautoswitch_enable){
 		return;
-	}else{
-		if(priv->ieee80211->bandwidth_auto_switch.bforced_tx20Mhz == false){//If send packets in 40 Mhz in 20/40
-			if(priv->undecorated_smoothed_pwdb <= priv->ieee80211->bandwidth_auto_switch.threshold_40Mhzto20Mhz)
-				priv->ieee80211->bandwidth_auto_switch.bforced_tx20Mhz = true;
-		}else{//in force send packets in 20 Mhz in 20/40
-			if(priv->undecorated_smoothed_pwdb >= priv->ieee80211->bandwidth_auto_switch.threshold_20Mhzto40Mhz)
-				priv->ieee80211->bandwidth_auto_switch.bforced_tx20Mhz = false;
-
-		}
+	}
+	if(priv->ieee80211->bandwidth_auto_switch.bforced_tx20Mhz == false){//If send packets in 40 Mhz in 20/40
+		if(priv->undecorated_smoothed_pwdb <= priv->ieee80211->bandwidth_auto_switch.threshold_40Mhzto20Mhz)
+			priv->ieee80211->bandwidth_auto_switch.bforced_tx20Mhz = true;
+	}else{//in force send packets in 20 Mhz in 20/40
+		if(priv->undecorated_smoothed_pwdb >= priv->ieee80211->bandwidth_auto_switch.threshold_20Mhzto40Mhz)
+			priv->ieee80211->bandwidth_auto_switch.bforced_tx20Mhz = false;
 	}
 }	// dm_BandwidthAutoSwitch
 
diff --git a/drivers/staging/rtl8712/rtl8712_cmd.h b/drivers/staging/rtl8712/rtl8712_cmd.h
index 039ab3e..67e9e91 100644
--- a/drivers/staging/rtl8712/rtl8712_cmd.h
+++ b/drivers/staging/rtl8712/rtl8712_cmd.h
@@ -109,16 +109,16 @@
 	GEN_CMD_CODE(_DisconnectCtrlEx), /*61*/
 
 	/* To do, modify these h2c cmd, add or delete */
-	GEN_CMD_CODE(_GetH2cLbk) ,
+	GEN_CMD_CODE(_GetH2cLbk),
 
 	/* WPS extra IE */
-	GEN_CMD_CODE(_SetProbeReqExtraIE) ,
-	GEN_CMD_CODE(_SetAssocReqExtraIE) ,
-	GEN_CMD_CODE(_SetProbeRspExtraIE) ,
-	GEN_CMD_CODE(_SetAssocRspExtraIE) ,
+	GEN_CMD_CODE(_SetProbeReqExtraIE),
+	GEN_CMD_CODE(_SetAssocReqExtraIE),
+	GEN_CMD_CODE(_SetProbeRspExtraIE),
+	GEN_CMD_CODE(_SetAssocRspExtraIE),
 
 	/* the following is driver will do */
-	GEN_CMD_CODE(_GetCurDataRate) ,
+	GEN_CMD_CODE(_GetCurDataRate),
 
 	GEN_CMD_CODE(_GetTxRetrycnt),  /* to record times that Tx retry to
 					* transmit packet after association
diff --git a/drivers/staging/rtl8712/rtl8712_event.h b/drivers/staging/rtl8712/rtl8712_event.h
index 3d7f79e..29a4c23 100644
--- a/drivers/staging/rtl8712/rtl8712_event.h
+++ b/drivers/staging/rtl8712/rtl8712_event.h
@@ -27,7 +27,7 @@
 #define _RTL8712_EVENT_H_
 
 void r8712_event_handle(struct _adapter *padapter, uint *peventbuf);
-void r8712_got_addbareq_event_callback(struct _adapter *adapter , u8 *pbuf);
+void r8712_got_addbareq_event_callback(struct _adapter *adapter, u8 *pbuf);
 
 enum rtl8712_c2h_event {
 	GEN_EVT_CODE(_Read_MACREG) = 0,		/*0*/
diff --git a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
index 73b7d86..9bb364f 100644
--- a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
+++ b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
@@ -196,7 +196,7 @@
 	if (p && ht_ielen > 0) {
 		ht_cap = true;
 		pht_capie = (struct ieee80211_ht_cap *)(p + 2);
-		memcpy(&mcs_rate , pht_capie->supp_mcs_set, 2);
+		memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
 	}
 	/* Add the protocol name */
 	iwe.cmd = SIOCGIWNAME;
@@ -1436,7 +1436,7 @@
 		if (p && ht_ielen > 0) {
 			ht_cap = true;
 			pht_capie = (struct ieee80211_ht_cap *)(p + 2);
-			memcpy(&mcs_rate , pht_capie->supp_mcs_set, 2);
+			memcpy(&mcs_rate, pht_capie->supp_mcs_set, 2);
 			bw_40MHz = (pht_capie->cap_info &
 				    IEEE80211_HT_CAP_SUP_WIDTH) ? 1 : 0;
 			short_GI = (pht_capie->cap_info &
diff --git a/drivers/staging/rtl8712/rtl871x_mlme.c b/drivers/staging/rtl8712/rtl871x_mlme.c
index b7462e8..977a833 100644
--- a/drivers/staging/rtl8712/rtl871x_mlme.c
+++ b/drivers/staging/rtl8712/rtl871x_mlme.c
@@ -93,7 +93,7 @@
 		return NULL;
 	spin_lock_irqsave(&free_queue->lock, irqL);
 	plist = free_queue->queue.next;
-	pnetwork = LIST_CONTAINOR(plist , struct wlan_network, list);
+	pnetwork = LIST_CONTAINOR(plist, struct wlan_network, list);
 	list_del_init(&pnetwork->list);
 	pnetwork->last_scanned = jiffies;
 	pmlmepriv->num_of_scanned++;
@@ -499,7 +499,7 @@
 }
 
 /* TODO: Perry : For Power Management */
-void r8712_atimdone_event_callback(struct _adapter *adapter , u8 *pbuf)
+void r8712_atimdone_event_callback(struct _adapter *adapter, u8 *pbuf)
 {
 }
 
diff --git a/drivers/staging/rtl8712/rtl871x_mp_ioctl.c b/drivers/staging/rtl8712/rtl871x_mp_ioctl.c
index a16f15e..49fa1d1 100644
--- a/drivers/staging/rtl8712/rtl871x_mp_ioctl.c
+++ b/drivers/staging/rtl8712/rtl871x_mp_ioctl.c
@@ -575,26 +575,6 @@
 	return RNDIS_STATUS_SUCCESS;
 }
 
-uint oid_rt_pro8711_join_bss_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint status = RNDIS_STATUS_SUCCESS;
-	struct ndis_802_11_ssid *pssid;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	*poid_par_priv->bytes_needed = (u32)sizeof(struct ndis_802_11_ssid);
-	*poid_par_priv->bytes_rw = 0;
-	if (poid_par_priv->information_buf_len < *poid_par_priv->bytes_needed)
-		return RNDIS_STATUS_INVALID_LENGTH;
-	pssid = (struct ndis_802_11_ssid *)poid_par_priv->information_buf;
-	if (mp_start_joinbss(Adapter, pssid) == _FAIL)
-		status = RNDIS_STATUS_NOT_ACCEPTED;
-	*poid_par_priv->bytes_rw = sizeof(struct ndis_802_11_ssid);
-	return status;
-}
-
 uint oid_rt_pro_read_register_hdl(struct oid_par_priv
 					 *poid_par_priv)
 {
@@ -696,172 +676,6 @@
 	return status;
 }
 
-uint oid_rt_pro_burst_read_register_hdl(struct oid_par_priv
-					       *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	struct burst_rw_reg *pBstRwReg;
-
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	pBstRwReg = (struct burst_rw_reg *)poid_par_priv->information_buf;
-	r8712_read_mem(Adapter, pBstRwReg->offset, (u32)pBstRwReg->len,
-		 pBstRwReg->Data);
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_burst_write_register_hdl(struct oid_par_priv
-						*poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	struct burst_rw_reg *pBstRwReg;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	pBstRwReg = (struct burst_rw_reg *)poid_par_priv->information_buf;
-	r8712_write_mem(Adapter, pBstRwReg->offset, (u32)pBstRwReg->len,
-		  pBstRwReg->Data);
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_write_txcmd_hdl(struct oid_par_priv *poid_par_priv)
-{
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_read16_eeprom_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	struct eeprom_rw_param *pEEPROM;
-
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	pEEPROM = (struct eeprom_rw_param *)poid_par_priv->information_buf;
-	pEEPROM->value = r8712_eeprom_read16(Adapter,
-					     (u16)(pEEPROM->offset >> 1));
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_write16_eeprom_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	struct eeprom_rw_param *pEEPROM;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	pEEPROM = (struct eeprom_rw_param *)poid_par_priv->information_buf;
-	r8712_eeprom_write16(Adapter, (u16)(pEEPROM->offset >> 1),
-			     pEEPROM->value);
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro8711_wi_poll_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	struct mp_wiparam *pwi_param;
-
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (poid_par_priv->information_buf_len < sizeof(struct mp_wiparam))
-		return RNDIS_STATUS_INVALID_LENGTH;
-	if (Adapter->mppriv.workparam.bcompleted == false)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	pwi_param = (struct mp_wiparam *)poid_par_priv->information_buf;
-	memcpy(pwi_param, &Adapter->mppriv.workparam,
-		sizeof(struct mp_wiparam));
-	Adapter->mppriv.act_in_progress = false;
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro8711_pkt_loss_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (poid_par_priv->information_buf_len < sizeof(uint) * 2)
-		return RNDIS_STATUS_INVALID_LENGTH;
-	if (*(uint *)poid_par_priv->information_buf == 1)
-		Adapter->mppriv.rx_pktloss = 0;
-	*((uint *)poid_par_priv->information_buf+1) =
-					 Adapter->mppriv.rx_pktloss;
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_rd_attrib_mem_hdl(struct oid_par_priv *poid_par_priv)
-{
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_wr_attrib_mem_hdl(struct oid_par_priv *poid_par_priv)
-{
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_set_rf_intfs_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint status = RNDIS_STATUS_SUCCESS;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (r8712_setrfintfs_cmd(Adapter, *(unsigned char *)
-	    poid_par_priv->information_buf) == _FAIL)
-		status = RNDIS_STATUS_NOT_ACCEPTED;
-	return status;
-}
-
-uint oid_rt_poll_rx_status_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	memcpy(poid_par_priv->information_buf,
-		(unsigned char *)&Adapter->mppriv.rxstat,
-		sizeof(struct recv_stat));
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_cfg_debug_message_hdl(struct oid_par_priv
-					     *poid_par_priv)
-{
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_set_data_rate_ex_hdl(struct oid_par_priv
-					    *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint status = RNDIS_STATUS_SUCCESS;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (r8712_setdatarate_cmd(Adapter,
-	    poid_par_priv->information_buf) != _SUCCESS)
-		status = RNDIS_STATUS_NOT_ACCEPTED;
-	return status;
-}
-
 uint oid_rt_get_thermal_meter_hdl(struct oid_par_priv *poid_par_priv)
 {
 	struct _adapter *Adapter = (struct _adapter *)
@@ -890,250 +704,12 @@
 	return RNDIS_STATUS_SUCCESS;
 }
 
-uint oid_rt_pro_set_power_tracking_hdl(struct oid_par_priv
-					      *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint status = RNDIS_STATUS_SUCCESS;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (poid_par_priv->information_buf_len < sizeof(u8))
-		return RNDIS_STATUS_INVALID_LENGTH;
-	if (!r8712_setptm_cmd(Adapter, *((u8 *)poid_par_priv->information_buf)))
-		status = RNDIS_STATUS_NOT_ACCEPTED;
-	return status;
-}
-
-uint oid_rt_pro_set_basic_rate_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	u8 mpdatarate[NumRates] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0xff};
-	uint status = RNDIS_STATUS_SUCCESS;
-	u32 ratevalue;
-	u8 datarates[NumRates];
-	int i;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	ratevalue = *((u32 *)poid_par_priv->information_buf);
-	for (i = 0; i < NumRates; i++) {
-		if (ratevalue == mpdatarate[i])
-			datarates[i] = mpdatarate[i];
-		else
-			datarates[i] = 0xff;
-	}
-	if (r8712_setbasicrate_cmd(Adapter, datarates) != _SUCCESS)
-		status = RNDIS_STATUS_NOT_ACCEPTED;
-	return status;
-}
-
-uint oid_rt_pro_qry_pwrstate_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (poid_par_priv->information_buf_len < 8)
-		return RNDIS_STATUS_INVALID_LENGTH;
-	*poid_par_priv->bytes_rw = 8;
-	memcpy(poid_par_priv->information_buf,
-		&(Adapter->pwrctrlpriv.pwr_mode), 8);
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_set_pwrstate_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint pwr_mode, smart_ps;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	*poid_par_priv->bytes_rw = 0;
-	*poid_par_priv->bytes_needed = 8;
-	if (poid_par_priv->information_buf_len < 8)
-		return RNDIS_STATUS_INVALID_LENGTH;
-	pwr_mode = *(uint *)(poid_par_priv->information_buf);
-	smart_ps = *(uint *)((addr_t)poid_par_priv->information_buf + 4);
-	if (pwr_mode != Adapter->pwrctrlpriv.pwr_mode || smart_ps !=
-			Adapter->pwrctrlpriv.smart_ps)
-		r8712_set_ps_mode(Adapter, pwr_mode, smart_ps);
-	*poid_par_priv->bytes_rw = 8;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_h2c_set_rate_table_hdl(struct oid_par_priv
-					      *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint status = RNDIS_STATUS_SUCCESS;
-	struct setratable_parm *prate_table;
-	u8 res;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	*poid_par_priv->bytes_needed  = sizeof(struct setratable_parm);
-	if (poid_par_priv->information_buf_len <
-	    sizeof(struct setratable_parm))
-		return RNDIS_STATUS_INVALID_LENGTH;
-	prate_table = (struct setratable_parm *)poid_par_priv->information_buf;
-	res = r8712_setrttbl_cmd(Adapter, prate_table);
-	if (res == _FAIL)
-		status = RNDIS_STATUS_FAILURE;
-	return status;
-}
-
-uint oid_rt_pro_h2c_get_rate_table_hdl(struct oid_par_priv
-					      *poid_par_priv)
-{
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_encryption_ctrl_hdl(struct oid_par_priv
-					   *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	struct security_priv *psecuritypriv = &Adapter->securitypriv;
-	enum ENCRY_CTRL_STATE encry_mode = 0;
-
-	*poid_par_priv->bytes_needed = sizeof(u8);
-	if (poid_par_priv->information_buf_len < *poid_par_priv->bytes_needed)
-		return RNDIS_STATUS_INVALID_LENGTH;
-
-	if (poid_par_priv->type_of_oid == SET_OID) {
-		encry_mode = *((u8 *)poid_par_priv->information_buf);
-		switch (encry_mode) {
-		case HW_CONTROL:
-			psecuritypriv->sw_decrypt = false;
-			psecuritypriv->sw_encrypt = false;
-			break;
-		case SW_CONTROL:
-			psecuritypriv->sw_decrypt = true;
-			psecuritypriv->sw_encrypt = true;
-			break;
-		case HW_ENCRY_SW_DECRY:
-			psecuritypriv->sw_decrypt = true;
-			psecuritypriv->sw_encrypt = false;
-			break;
-		case SW_ENCRY_HW_DECRY:
-			psecuritypriv->sw_decrypt = false;
-			psecuritypriv->sw_encrypt = true;
-			break;
-		}
-	} else {
-		if ((psecuritypriv->sw_encrypt == false) &&
-		    (psecuritypriv->sw_decrypt == false))
-			encry_mode = HW_CONTROL;
-		else if ((psecuritypriv->sw_encrypt == false) &&
-			 (psecuritypriv->sw_decrypt == true))
-			encry_mode = HW_ENCRY_SW_DECRY;
-		else if ((psecuritypriv->sw_encrypt == true) &&
-			 (psecuritypriv->sw_decrypt == false))
-			encry_mode = SW_ENCRY_HW_DECRY;
-		else if ((psecuritypriv->sw_encrypt == true) &&
-			 (psecuritypriv->sw_decrypt == true))
-			encry_mode = SW_CONTROL;
-		*(u8 *)poid_par_priv->information_buf =  encry_mode;
-		*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	}
-	return RNDIS_STATUS_SUCCESS;
-}
-/*----------------------------------------------------------------------*/
-uint oid_rt_pro_add_sta_info_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-
-	uint status = RNDIS_STATUS_SUCCESS;
-
-	struct sta_info	*psta = NULL;
-	u8	*macaddr;
-
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-
-	*poid_par_priv->bytes_needed = ETH_ALEN;
-	if (poid_par_priv->information_buf_len < *poid_par_priv->bytes_needed)
-		return RNDIS_STATUS_INVALID_LENGTH;
-	macaddr = (u8 *) poid_par_priv->information_buf;
-	psta = r8712_get_stainfo(&Adapter->stapriv, macaddr);
-	if (psta == NULL) { /* the sta in sta_info_queue => do nothing*/
-		psta = r8712_alloc_stainfo(&Adapter->stapriv, macaddr);
-		if (psta == NULL)
-			status = RNDIS_STATUS_FAILURE;
-	}
-	return status;
-}
-/*-------------------------------------------------------------------------*/
-uint oid_rt_pro_dele_sta_info_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-
-	unsigned long			irqL;
-
-	struct sta_info		*psta = NULL;
-	u8			*macaddr;
-
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-
-	*poid_par_priv->bytes_needed = ETH_ALEN;
-	if (poid_par_priv->information_buf_len < *poid_par_priv->bytes_needed)
-		return RNDIS_STATUS_INVALID_LENGTH;
-
-	macaddr = (u8 *)poid_par_priv->information_buf;
-
-	psta = r8712_get_stainfo(&Adapter->stapriv, macaddr);
-	if (psta != NULL) {
-		spin_lock_irqsave(&(Adapter->stapriv.sta_hash_lock), irqL);
-		r8712_free_stainfo(Adapter, psta);
-		spin_unlock_irqrestore(&(Adapter->stapriv.sta_hash_lock), irqL);
-	}
-
-	return RNDIS_STATUS_SUCCESS;
-}
 /*--------------------------------------------------------------------------*/
 static u32 mp_query_drv_var(struct _adapter *padapter, u8 offset, u32 var)
 {
 	return var;
 }
 
-uint oid_rt_pro_query_dr_variable_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-
-	struct DR_VARIABLE_STRUCT *pdrv_var;
-
-	if (poid_par_priv->type_of_oid != QUERY_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	*poid_par_priv->bytes_needed = sizeof(struct DR_VARIABLE_STRUCT);
-	if (poid_par_priv->information_buf_len < *poid_par_priv->bytes_needed)
-		return RNDIS_STATUS_INVALID_LENGTH;
-	pdrv_var = (struct DR_VARIABLE_STRUCT *)poid_par_priv->information_buf;
-	pdrv_var->variable = mp_query_drv_var(Adapter, pdrv_var->offset,
-					      pdrv_var->variable);
-	*poid_par_priv->bytes_rw = poid_par_priv->information_buf_len;
-	return RNDIS_STATUS_SUCCESS;
-}
-
-/*--------------------------------------------------------------------------*/
-uint oid_rt_pro_rx_packet_type_hdl(struct oid_par_priv *poid_par_priv)
-{
-	return RNDIS_STATUS_SUCCESS;
-}
 /*------------------------------------------------------------------------*/
 uint oid_rt_pro_read_efuse_hdl(struct oid_par_priv *poid_par_priv)
 {
@@ -1192,38 +768,6 @@
 	return status;
 }
 /*----------------------------------------------------------------------*/
-uint oid_rt_pro_rw_efuse_pgpkt_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint status = RNDIS_STATUS_SUCCESS;
-	struct PGPKT_STRUCT	*ppgpkt;
-
-	*poid_par_priv->bytes_rw = 0;
-	if (poid_par_priv->information_buf_len < sizeof(struct PGPKT_STRUCT))
-		return RNDIS_STATUS_INVALID_LENGTH;
-	ppgpkt = (struct PGPKT_STRUCT *)poid_par_priv->information_buf;
-	if (poid_par_priv->type_of_oid == QUERY_OID) {
-		if (r8712_efuse_pg_packet_read(Adapter, ppgpkt->offset,
-		    ppgpkt->data) == true)
-			*poid_par_priv->bytes_rw =
-				 poid_par_priv->information_buf_len;
-		else
-			status = RNDIS_STATUS_FAILURE;
-	} else {
-		if (r8712_efuse_reg_init(Adapter) == true) {
-			if (r8712_efuse_pg_packet_write(Adapter, ppgpkt->offset,
-			    ppgpkt->word_en, ppgpkt->data) == true)
-				*poid_par_priv->bytes_rw =
-					 poid_par_priv->information_buf_len;
-			else
-				status = RNDIS_STATUS_FAILURE;
-			r8712_efuse_reg_uninit(Adapter);
-		} else
-			status = RNDIS_STATUS_FAILURE;
-	}
-	return status;
-}
 
 uint oid_rt_get_efuse_current_size_hdl(struct oid_par_priv
 					      *poid_par_priv)
@@ -1319,24 +863,6 @@
 	return RNDIS_STATUS_SUCCESS;
 }
 
-uint oid_rt_set_crystal_cap_hdl(struct oid_par_priv *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	u32		crystal_cap = 0;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (poid_par_priv->information_buf_len < sizeof(u32))
-		return RNDIS_STATUS_INVALID_LENGTH;
-	crystal_cap = *((u32 *)poid_par_priv->information_buf);/*4*/
-	if (crystal_cap > 0xf)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	Adapter->mppriv.curr_crystalcap = crystal_cap;
-	r8712_SetCrystalCap(Adapter);
-	return RNDIS_STATUS_SUCCESS;
-}
-
 uint oid_rt_set_rx_packet_type_hdl(struct oid_par_priv
 					   *poid_par_priv)
 {
@@ -1378,50 +904,6 @@
 	return RNDIS_STATUS_SUCCESS;
 }
 
-uint oid_rt_pro_set_tx_agc_offset_hdl(struct oid_par_priv
-					     *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	u32 txagc;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-	if (poid_par_priv->information_buf_len < sizeof(u32))
-		return RNDIS_STATUS_INVALID_LENGTH;
-	txagc = *(u32 *)poid_par_priv->information_buf;
-	r8712_SetTxAGCOffset(Adapter, txagc);
-	return RNDIS_STATUS_SUCCESS;
-}
-
-uint oid_rt_pro_set_pkt_test_mode_hdl(struct oid_par_priv
-					     *poid_par_priv)
-{
-	struct _adapter *Adapter = (struct _adapter *)
-				   (poid_par_priv->adapter_context);
-	uint status = RNDIS_STATUS_SUCCESS;
-	struct mlme_priv	*pmlmepriv = &Adapter->mlmepriv;
-	struct mp_priv		*pmppriv = &Adapter->mppriv;
-	u32			type;
-
-	if (poid_par_priv->type_of_oid != SET_OID)
-		return RNDIS_STATUS_NOT_ACCEPTED;
-
-	if (poid_par_priv->information_buf_len < sizeof(u32))
-		return RNDIS_STATUS_INVALID_LENGTH;
-
-	type = *(u32 *)poid_par_priv->information_buf;
-
-	if (_LOOPBOOK_MODE_ == type) {
-		pmppriv->mode = type;
-		set_fwstate(pmlmepriv, WIFI_MP_LPBK_STATE); /*append txdesc*/
-	} else if (_2MAC_MODE_ == type) {
-		pmppriv->mode = type;
-		_clr_fwstate_(pmlmepriv, WIFI_MP_LPBK_STATE);
-	} else
-		status = RNDIS_STATUS_NOT_ACCEPTED;
-	return status;
-}
 /*--------------------------------------------------------------------------*/
 /*Linux*/
 unsigned int mp_ioctl_xmit_packet_hdl(struct oid_par_priv *poid_par_priv)
diff --git a/drivers/staging/rtl8712/rtl871x_mp_ioctl.h b/drivers/staging/rtl8712/rtl871x_mp_ioctl.h
index 850143d..8e7c7f8 100644
--- a/drivers/staging/rtl8712/rtl871x_mp_ioctl.h
+++ b/drivers/staging/rtl8712/rtl871x_mp_ioctl.h
@@ -86,41 +86,8 @@
 int mp_start_joinbss(struct _adapter *padapter, struct ndis_802_11_ssid *pssid);
 
 /* oid_rtl_seg_87_11_00 */
-uint oid_rt_pro8711_join_bss_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_pro_read_register_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_pro_write_register_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_burst_read_register_hdl(struct oid_par_priv*
-					       poid_par_priv);
-uint oid_rt_pro_burst_write_register_hdl(struct oid_par_priv*
-						poid_par_priv);
-uint oid_rt_pro_write_txcmd_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_read16_eeprom_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_write16_eeprom_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro8711_wi_poll_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro8711_pkt_loss_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_rd_attrib_mem_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_wr_attrib_mem_hdl(struct oid_par_priv *poid_par_priv);
-uint  oid_rt_pro_set_rf_intfs_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_poll_rx_status_hdl(struct oid_par_priv *poid_par_priv);
-/* oid_rtl_seg_87_11_20 */
-uint oid_rt_pro_cfg_debug_message_hdl(
-				struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_set_data_rate_ex_hdl(
-				struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_set_basic_rate_hdl(
-				struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_set_power_tracking_hdl(
-				struct oid_par_priv *poid_par_priv);
-/* oid_rtl_seg_87_11_50 */
-uint oid_rt_pro_qry_pwrstate_hdl(
-				struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_set_pwrstate_hdl(
-				struct oid_par_priv *poid_par_priv);
-/* oid_rtl_seg_87_11_F0 */
-uint oid_rt_pro_h2c_set_rate_table_hdl(
-				struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_h2c_get_rate_table_hdl(
-				struct oid_par_priv *poid_par_priv);
 /* oid_rtl_seg_81_80_00 */
 uint oid_rt_pro_set_data_rate_hdl(
 				struct oid_par_priv *poid_par_priv);
@@ -159,28 +126,15 @@
 uint oid_rt_pro_read_rf_reg_hdl(struct oid_par_priv *poid_par_priv);
 /* oid_rtl_seg_81_85 */
 uint oid_rt_wireless_mode_hdl(struct oid_par_priv *poid_par_priv);
-/* oid_rtl_seg_87_12_00 */
-uint oid_rt_pro_encryption_ctrl_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_add_sta_info_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_dele_sta_info_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_query_dr_variable_hdl(
-				struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_rx_packet_type_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_pro_read_efuse_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_pro_write_efuse_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_rw_efuse_pgpkt_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_get_efuse_current_size_hdl(
 				struct oid_par_priv *poid_par_priv);
 uint oid_rt_pro_efuse_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_pro_efuse_map_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_set_bandwidth_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_set_crystal_cap_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_set_rx_packet_type_hdl(struct oid_par_priv *poid_par_priv);
 uint oid_rt_get_efuse_max_size_hdl(struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_set_tx_agc_offset_hdl(
-				struct oid_par_priv *poid_par_priv);
-uint oid_rt_pro_set_pkt_test_mode_hdl(
-				struct oid_par_priv *poid_par_priv);
 uint oid_rt_get_thermal_meter_hdl(
 				struct oid_par_priv *poid_par_priv);
 uint oid_rt_reset_phy_rx_packet_count_hdl(
diff --git a/drivers/staging/rtl8712/rtl871x_pwrctrl.h b/drivers/staging/rtl8712/rtl871x_pwrctrl.h
index 0526ba0..dbfb555 100644
--- a/drivers/staging/rtl8712/rtl871x_pwrctrl.h
+++ b/drivers/staging/rtl8712/rtl871x_pwrctrl.h
@@ -33,17 +33,17 @@
 #define CMD_ALIVE	BIT(2)
 
 enum Power_Mgnt {
-	PS_MODE_ACTIVE	= 0	,
-	PS_MODE_MIN			,
-	PS_MODE_MAX			,
-	PS_MODE_DTIM			,
-	PS_MODE_VOIP			,
-	PS_MODE_UAPSD_WMM	,
-	PS_MODE_UAPSD			,
-	PS_MODE_IBSS			,
-	PS_MODE_WWLAN		,
-	PM_Radio_Off			,
-	PM_Card_Disable		,
+	PS_MODE_ACTIVE	= 0,
+	PS_MODE_MIN,
+	PS_MODE_MAX,
+	PS_MODE_DTIM,
+	PS_MODE_VOIP,
+	PS_MODE_UAPSD_WMM,
+	PS_MODE_UAPSD,
+	PS_MODE_IBSS,
+	PS_MODE_WWLAN,
+	PM_Radio_Off,
+	PM_Card_Disable,
 	PS_MODE_NUM
 };
 
diff --git a/drivers/staging/rtl8712/rtl871x_sta_mgt.c b/drivers/staging/rtl8712/rtl871x_sta_mgt.c
index 4c9b98e..1752121 100644
--- a/drivers/staging/rtl8712/rtl871x_sta_mgt.c
+++ b/drivers/staging/rtl8712/rtl871x_sta_mgt.c
@@ -83,9 +83,8 @@
 	spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
 	phead = &pstapriv->free_sta_queue.queue;
 	plist = phead->next;
-	while ((end_of_queue_search(phead, plist)) == false) {
+	while ((end_of_queue_search(phead, plist)) == false)
 		plist = plist->next;
-	}
 
 	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
 }
@@ -228,7 +227,7 @@
 					      struct sta_info, hash_list);
 			plist = plist->next;
 			if (pbcmc_stainfo != psta)
-				r8712_free_stainfo(padapter , psta);
+				r8712_free_stainfo(padapter, psta);
 		}
 	}
 	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
diff --git a/drivers/staging/rtl8712/rtl871x_xmit.c b/drivers/staging/rtl8712/rtl871x_xmit.c
index 62a377e..a28af03 100644
--- a/drivers/staging/rtl8712/rtl871x_xmit.c
+++ b/drivers/staging/rtl8712/rtl871x_xmit.c
@@ -471,7 +471,7 @@
 	return _SUCCESS;
 }
 
-static sint make_wlanhdr(struct _adapter *padapter , u8 *hdr,
+static sint make_wlanhdr(struct _adapter *padapter, u8 *hdr,
 			 struct pkt_attrib *pattrib)
 {
 	u16 *qc;
diff --git a/drivers/staging/rtl8712/sta_info.h b/drivers/staging/rtl8712/sta_info.h
index c4e0ef2..742dfa0 100644
--- a/drivers/staging/rtl8712/sta_info.h
+++ b/drivers/staging/rtl8712/sta_info.h
@@ -135,7 +135,7 @@
 u32 _r8712_free_sta_priv(struct sta_priv *pstapriv);
 struct sta_info *r8712_alloc_stainfo(struct sta_priv *pstapriv,
 				     u8 *hwaddr);
-void r8712_free_stainfo(struct _adapter *padapter , struct sta_info *psta);
+void r8712_free_stainfo(struct _adapter *padapter, struct sta_info *psta);
 void r8712_free_all_stainfo(struct _adapter *padapter);
 struct sta_info *r8712_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr);
 void r8712_init_bcmc_stainfo(struct _adapter *padapter);
diff --git a/drivers/staging/rtl8723au/core/rtw_ap.c b/drivers/staging/rtl8723au/core/rtw_ap.c
index e394d12..c6327c0 100644
--- a/drivers/staging/rtl8723au/core/rtw_ap.c
+++ b/drivers/staging/rtl8723au/core/rtw_ap.c
@@ -456,8 +456,8 @@
 		       sizeof(struct stainfo_stats));
 
 		/* prepare for add_RATid23a */
-		supportRateNum = rtw_get_rateset_len23a((u8*)&pcur_network->SupportedRates);
-		network_type = rtw_check_network_type23a((u8*)&pcur_network->SupportedRates, supportRateNum, 1);
+		supportRateNum = rtw_get_rateset_len23a((u8 *)&pcur_network->SupportedRates);
+		network_type = rtw_check_network_type23a((u8 *)&pcur_network->SupportedRates, supportRateNum, 1);
 
 		memcpy(psta->bssrateset, &pcur_network->SupportedRates, supportRateNum);
 		psta->bssratelen = supportRateNum;
@@ -897,7 +897,7 @@
 	pairwise_cipher = 0;
 	psecuritypriv->wpa_group_cipher = 0;
 	psecuritypriv->wpa_pairwise_cipher = 0;
-	for (p = ie; ;p += (ie_len + 2)) {
+	for (p = ie; ; p += (ie_len + 2)) {
 		p = rtw_get_ie23a(p, WLAN_EID_VENDOR_SPECIFIC, &ie_len,
 				  pbss_network->IELength - (ie_len + 2));
 		if ((p) && (!memcmp(p+2, RTW_WPA_OUI23A_TYPE, 4))) {
@@ -924,7 +924,7 @@
 	ie_len = 0;
 	pmlmepriv->qos_option = 0;
 	if (pregistrypriv->wmm_enable) {
-		for (p = ie; ;p += (ie_len + 2)) {
+		for (p = ie; ; p += (ie_len + 2)) {
 			p = rtw_get_ie23a(p, WLAN_EID_VENDOR_SPECIFIC, &ie_len,
 					  (pbss_network->IELength -
 					   (ie_len + 2)));
@@ -1204,7 +1204,7 @@
 {
 }
 
-static void update_bcn_vendor_spec_ie(struct rtw_adapter *padapter, u8*oui)
+static void update_bcn_vendor_spec_ie(struct rtw_adapter *padapter, u8 *oui)
 {
 	DBG_8723A("%s\n", __func__);
 
diff --git a/drivers/staging/rtl8723au/core/rtw_efuse.c b/drivers/staging/rtl8723au/core/rtw_efuse.c
index 81960e7..a6deddc 100644
--- a/drivers/staging/rtl8723au/core/rtw_efuse.c
+++ b/drivers/staging/rtl8723au/core/rtw_efuse.c
@@ -327,15 +327,9 @@
  *---------------------------------------------------------------------------*/
 
 void
-EFUSE_Write1Byte(
-	struct rtw_adapter *	Adapter,
-	u16		Address,
-	u8		Value);
+EFUSE_Write1Byte(struct rtw_adapter *Adapter, u16 Address, u8 Value);
 void
-EFUSE_Write1Byte(
-	struct rtw_adapter *	Adapter,
-	u16		Address,
-	u8		Value)
+EFUSE_Write1Byte(struct rtw_adapter *Adapter, u16 Address, u8 Value)
 {
 	u8	Bytetemp = {0x00};
 	u8	temp = {0x00};
@@ -635,10 +629,7 @@
  *
  *---------------------------------------------------------------------------*/
 static void
-efuse_ShadowRead1Byte(
-	struct rtw_adapter *	pAdapter,
-	u16		Offset,
-	u8		*Value)
+efuse_ShadowRead1Byte(struct rtw_adapter *pAdapter, u16 Offset, u8 *Value)
 {
 	struct eeprom_priv *pEEPROM = GET_EEPROM_EFUSE_PRIV(pAdapter);
 
@@ -647,10 +638,7 @@
 
 /* Read Two Bytes */
 static void
-efuse_ShadowRead2Byte(
-	struct rtw_adapter *	pAdapter,
-	u16		Offset,
-	u16		*Value)
+efuse_ShadowRead2Byte(struct rtw_adapter *pAdapter, u16 Offset, u16 *Value)
 {
 	struct eeprom_priv *pEEPROM = GET_EEPROM_EFUSE_PRIV(pAdapter);
 
@@ -660,10 +648,7 @@
 
 /* Read Four Bytes */
 static void
-efuse_ShadowRead4Byte(
-	struct rtw_adapter *	pAdapter,
-	u16		Offset,
-	u32		*Value)
+efuse_ShadowRead4Byte(struct rtw_adapter *pAdapter, u16 Offset, u32 *Value)
 {
 	struct eeprom_priv *pEEPROM = GET_EEPROM_EFUSE_PRIV(pAdapter);
 
@@ -722,11 +707,8 @@
  *
  *---------------------------------------------------------------------------*/
 void
-EFUSE_ShadowRead23a(
-	struct rtw_adapter *	pAdapter,
-	u8		Type,
-	u16		Offset,
-	u32		*Value)
+EFUSE_ShadowRead23a(struct rtw_adapter *pAdapter,
+		    u8 Type, u16 Offset, u32 *Value)
 {
 	if (Type == 1)
 		efuse_ShadowRead1Byte(pAdapter, Offset, (u8 *)Value);
diff --git a/drivers/staging/rtl8723au/core/rtw_xmit.c b/drivers/staging/rtl8723au/core/rtw_xmit.c
index 7a5e6bf..1c82dff 100644
--- a/drivers/staging/rtl8723au/core/rtw_xmit.c
+++ b/drivers/staging/rtl8723au/core/rtw_xmit.c
@@ -2372,12 +2372,3 @@
 	return rtw_sctx_wait23a(pack_tx_ops);
 }
 
-void rtw_ack_tx_done23a(struct xmit_priv *pxmitpriv, int status)
-{
-	struct submit_ctx *pack_tx_ops = &pxmitpriv->ack_tx_ops;
-
-	if (pxmitpriv->ack_tx)
-		rtw23a_sctx_done_err(&pack_tx_ops, status);
-	else
-		DBG_8723A("%s ack_tx not set\n", __func__);
-}
diff --git a/drivers/staging/rtl8723au/hal/HalPwrSeqCmd.c b/drivers/staging/rtl8723au/hal/HalPwrSeqCmd.c
index 1da4eec..33777d2 100644
--- a/drivers/staging/rtl8723au/hal/HalPwrSeqCmd.c
+++ b/drivers/staging/rtl8723au/hal/HalPwrSeqCmd.c
@@ -47,11 +47,11 @@
 		       u8 FabVersion, u8 InterfaceType,
 		       struct wlan_pwr_cfg PwrSeqCmd[])
 {
-	struct wlan_pwr_cfg PwrCfgCmd = { 0 };
-	u8 bPollingBit = false;
+	struct wlan_pwr_cfg PwrCfgCmd;
+	u8 bPollingBit;
 	u32 AryIdx = 0;
-	u8 value = 0;
-	u32 offset = 0;
+	u8 value;
+	u32 offset;
 	u32 pollingCount = 0;	/*  polling autoload done. */
 	u32 maxPollingCnt = 5000;
 
diff --git a/drivers/staging/rtl8723au/hal/odm.c b/drivers/staging/rtl8723au/hal/odm.c
index 1c0f106d..5269b46 100644
--- a/drivers/staging/rtl8723au/hal/odm.c
+++ b/drivers/staging/rtl8723au/hal/odm.c
@@ -187,24 +187,13 @@
 
 void odm_DynamicBBPowerSaving23a(struct dm_odm_t *pDM_Odm);
 
-void odm_1R_CCA23a(struct dm_odm_t *pDM_Odm);
 /* END---------BB POWER SAVE----------------------- */
 
-void odm_RefreshRateAdaptiveMask23aMP23a(struct dm_odm_t *pDM_Odm);
-
 void odm_RefreshRateAdaptiveMask23aCE23a(struct dm_odm_t *pDM_Odm);
 
-void odm_RefreshRateAdaptiveMask23aAPADSL23a(struct dm_odm_t *pDM_Odm);
-
 void odm_DynamicTxPower23aInit(struct dm_odm_t *pDM_Odm);
 
-void odm_RSSIMonitorInit(struct dm_odm_t *pDM_Odm);
-
-void odm_RSSIMonitorCheck23aMP(struct dm_odm_t *pDM_Odm);
-
 void odm_RSSIMonitorCheck23aCE(struct dm_odm_t *pDM_Odm);
-void odm_RSSIMonitorCheck23aAP(struct dm_odm_t *pDM_Odm);
-
 void odm_RSSIMonitorCheck23a(struct dm_odm_t *pDM_Odm);
 void odm_DynamicTxPower23a(struct dm_odm_t *pDM_Odm);
 
@@ -212,16 +201,12 @@
 
 void ODM_TXPowerTrackingCheck23a(struct dm_odm_t *pDM_Odm);
 
-void odm_TXPowerTrackingCheckAP(struct dm_odm_t *pDM_Odm);
-
 void odm_RateAdaptiveMaskInit23a(struct dm_odm_t *pDM_Odm);
 
 void odm_TXPowerTrackingThermalMeterInit23a(struct dm_odm_t *pDM_Odm);
 
 void odm_TXPowerTrackingInit23a(struct dm_odm_t *pDM_Odm);
 
-void odm_TXPowerTrackingCheckMP(struct dm_odm_t *pDM_Odm);
-
 void odm_TXPowerTrackingCheckCE23a(struct dm_odm_t *pDM_Odm);
 
 static void odm_EdcaTurboCheck23a(struct dm_odm_t *pDM_Odm);
@@ -946,47 +931,13 @@
 	return;
 }
 
-void odm_1R_CCA23a(struct dm_odm_t *pDM_Odm)
-{
-	struct dynamic_pwr_sav *pDM_PSTable = &pDM_Odm->DM_PSTable;
-
-	if (pDM_Odm->RSSI_Min != 0xFF) {
-		if (pDM_PSTable->PreCCAState == CCA_2R) {
-			if (pDM_Odm->RSSI_Min >= 35)
-				pDM_PSTable->CurCCAState = CCA_1R;
-			else
-				pDM_PSTable->CurCCAState = CCA_2R;
-		} else {
-			if (pDM_Odm->RSSI_Min <= 30)
-				pDM_PSTable->CurCCAState = CCA_2R;
-			else
-				pDM_PSTable->CurCCAState = CCA_1R;
-		}
-	} else {
-		pDM_PSTable->CurCCAState = CCA_MAX;
-	}
-
-	if (pDM_PSTable->PreCCAState != pDM_PSTable->CurCCAState) {
-		if (pDM_PSTable->CurCCAState == CCA_1R) {
-			if (pDM_Odm->RFType == ODM_2T2R)
-				ODM_SetBBReg(pDM_Odm, 0xc04, bMaskByte0, 0x13);
-			else
-				ODM_SetBBReg(pDM_Odm, 0xc04, bMaskByte0, 0x23);
-		} else {
-			ODM_SetBBReg(pDM_Odm, 0xc04, bMaskByte0, 0x33);
-			/* PHY_SetBBReg(pAdapter, 0xe70, bMaskByte3, 0x63); */
-		}
-		pDM_PSTable->PreCCAState = pDM_PSTable->CurCCAState;
-	}
-}
-
 void ODM_RF_Saving23a(struct dm_odm_t *pDM_Odm, u8 bForceInNormal)
 {
 	struct dynamic_pwr_sav *pDM_PSTable = &pDM_Odm->DM_PSTable;
-	u8 Rssi_Up_bound = 30 ;
+	u8 Rssi_Up_bound = 30;
 	u8 Rssi_Low_bound = 25;
 	if (pDM_Odm->PatchID == 40) { /* RT_CID_819x_FUNAI_TV */
-		Rssi_Up_bound = 50 ;
+		Rssi_Up_bound = 50;
 		Rssi_Low_bound = 45;
 	}
 	if (pDM_PSTable->initialize == 0) {
@@ -1177,10 +1128,6 @@
 	odm_RefreshRateAdaptiveMask23aCE23a(pDM_Odm);
 }
 
-void odm_RefreshRateAdaptiveMask23aMP23a(struct dm_odm_t *pDM_Odm)
-{
-}
-
 void odm_RefreshRateAdaptiveMask23aCE23a(struct dm_odm_t *pDM_Odm)
 {
 	u8 i;
@@ -1216,10 +1163,6 @@
 
 }
 
-void odm_RefreshRateAdaptiveMask23aAPADSL23a(struct dm_odm_t *pDM_Odm)
-{
-}
-
 /*  Return Value: bool */
 /*  - true: RATRState is changed. */
 bool ODM_RAStateCheck23a(struct dm_odm_t *pDM_Odm, s32 RSSI, bool bForceUpdate,
@@ -1284,14 +1227,6 @@
 	pdmpriv->DynamicTxHighPowerLvl = TxHighPwrLevel_Normal;
 }
 
-/* 3 ============================================================ */
-/* 3 RSSI Monitor */
-/* 3 ============================================================ */
-
-void odm_RSSIMonitorInit(struct dm_odm_t *pDM_Odm)
-{
-}
-
 void odm_RSSIMonitorCheck23a(struct dm_odm_t *pDM_Odm)
 {
 	/*  For AP/ADSL use struct rtl8723a_priv * */
@@ -1306,10 +1241,6 @@
 	odm_RSSIMonitorCheck23aCE(pDM_Odm);
 }	/*  odm_RSSIMonitorCheck23a */
 
-void odm_RSSIMonitorCheck23aMP(struct dm_odm_t *pDM_Odm)
-{
-}
-
 static void
 FindMinimumRSSI(
 	struct rtw_adapter *pAdapter
@@ -1378,10 +1309,6 @@
 	ODM_CmnInfoUpdate23a(&pHalData->odmpriv, ODM_CMNINFO_RSSI_MIN, pdmpriv->MinUndecoratedPWDBForDM);
 }
 
-void odm_RSSIMonitorCheck23aAP(struct dm_odm_t *pDM_Odm)
-{
-}
-
 /* endif */
 /* 3 ============================================================ */
 /* 3 Tx Power Tracking */
@@ -1422,19 +1349,12 @@
 {
 }
 
-void odm_TXPowerTrackingCheckMP(struct dm_odm_t *pDM_Odm)
-{
-}
-
-void odm_TXPowerTrackingCheckAP(struct dm_odm_t *pDM_Odm)
-{
-}
-
 /* EDCA Turbo */
 static void ODM_EdcaTurboInit23a(struct dm_odm_t *pDM_Odm)
 {
 
 	struct rtw_adapter *Adapter = pDM_Odm->Adapter;
+
 	pDM_Odm->DM_EDCA_Table.bCurrentTurboEDCA = false;
 	pDM_Odm->DM_EDCA_Table.bIsCurRDLState = false;
 	Adapter->recvpriv.bIsAnyNonBEPkts = false;
@@ -1591,6 +1511,7 @@
 void ODM_SingleDualAntennaDefaultSetting(struct dm_odm_t *pDM_Odm)
 {
 	struct sw_ant_sw *pDM_SWAT_Table = &pDM_Odm->DM_SWAT_Table;
+
 	pDM_SWAT_Table->ANTA_ON = true;
 	pDM_SWAT_Table->ANTB_ON = true;
 }
diff --git a/drivers/staging/rtl8723au/hal/odm_HWConfig.c b/drivers/staging/rtl8723au/hal/odm_HWConfig.c
index fb3cc87..33aafa0 100644
--- a/drivers/staging/rtl8723au/hal/odm_HWConfig.c
+++ b/drivers/staging/rtl8723au/hal/odm_HWConfig.c
@@ -113,7 +113,7 @@
 
 		cck_highpwr = pDM_Odm->bCckHighPower;
 
-		cck_agc_rpt =  pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a ;
+		cck_agc_rpt =  pPhyStaRpt->cck_agc_rpt_ofdm_cfosho_a;
 
 		/* The RSSI formula should be modified according to the gain table */
 		if (!cck_highpwr) {
@@ -138,16 +138,16 @@
 			report = (cck_agc_rpt & 0x60)>>5;
 			switch (report) {
 			case 0x3:
-				rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f)<<1) ;
+				rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f)<<1);
 				break;
 			case 0x2:
 				rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f)<<1);
 				break;
 			case 0x1:
-				rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f)<<1) ;
+				rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f)<<1);
 				break;
 			case 0x0:
-				rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f)<<1) ;
+				rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f)<<1);
 				break;
 			}
 		}
diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_bt-coexist.c b/drivers/staging/rtl8723au/hal/rtl8723a_bt-coexist.c
index 86a8397..412d8cf 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723a_bt-coexist.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723a_bt-coexist.c
@@ -9145,7 +9145,7 @@
 	u32	counters = 0;
 
 	counters = pHalData->bt_coexist.halCoex8723.lowPriorityTx+
-		pHalData->bt_coexist.halCoex8723.lowPriorityRx ;
+		pHalData->bt_coexist.halCoex8723.lowPriorityRx;
 	return counters;
 }
 
diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_phycfg.c b/drivers/staging/rtl8723au/hal/rtl8723a_phycfg.c
index 88e91cd..19dc5e3 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723a_phycfg.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723a_phycfg.c
@@ -698,7 +698,7 @@
  * 11/10/2008	tynli	Modify to mew files.
  *---------------------------------------------------------------------------*/
 static	int
-phy_ConfigBBWithPgHeaderFile(struct rtw_adapter *Adapter, u8 ConfigType)
+phy_ConfigBBWithPgHeaderFile(struct rtw_adapter *Adapter)
 {
 	int i;
 	u32 *Rtl819XPHY_REGArray_Table_PG;
@@ -707,17 +707,15 @@
 	PHY_REGArrayPGLen = Rtl8723_PHY_REG_Array_PGLength;
 	Rtl819XPHY_REGArray_Table_PG = (u32 *)Rtl8723_PHY_REG_Array_PG;
 
-	if (ConfigType == BaseBand_Config_PHY_REG) {
-		for (i = 0; i < PHY_REGArrayPGLen; i = i + 3) {
-			storePwrIndexDiffRateOffset(Adapter,
-				Rtl819XPHY_REGArray_Table_PG[i],
-				Rtl819XPHY_REGArray_Table_PG[i+1],
-				Rtl819XPHY_REGArray_Table_PG[i+2]);
-		}
+	for (i = 0; i < PHY_REGArrayPGLen; i = i + 3) {
+		storePwrIndexDiffRateOffset(Adapter,
+					    Rtl819XPHY_REGArray_Table_PG[i],
+					    Rtl819XPHY_REGArray_Table_PG[i+1],
+					    Rtl819XPHY_REGArray_Table_PG[i+2]);
 	}
 
 	return _SUCCESS;
-}	/* phy_ConfigBBWithPgHeaderFile */
+}
 
 static void
 phy_BB8192C_Config_1T(struct rtw_adapter *Adapter)
@@ -768,8 +766,7 @@
 	if (pEEPROM->bautoload_fail_flag == false) {
 		pHalData->pwrGroupCnt = 0;
 
-		rtStatus = phy_ConfigBBWithPgHeaderFile(Adapter,
-							BaseBand_Config_PHY_REG);
+		rtStatus = phy_ConfigBBWithPgHeaderFile(Adapter);
 	}
 
 	if (rtStatus != _SUCCESS)
@@ -923,9 +920,6 @@
 	u8 regBwOpMode;
 	u8 regRRSR_RSC;
 
-	if (pHalData->rf_chip == RF_PSEUDO_11N)
-		return;
-
 	/*  There is no 40MHz mode in RF_8225. */
 	if (pHalData->rf_chip == RF_8225)
 		return;
@@ -1021,10 +1015,6 @@
 		/*  PHY_SetRF8258Bandwidth(); */
 		break;
 
-	case RF_PSEUDO_11N:
-		/*  Do Nothing */
-		break;
-
 	case RF_6052:
 		rtl8723a_phy_rf6052set_bw(Adapter, pHalData->CurrentChannelBW);
 		break;
@@ -1074,7 +1064,7 @@
 
 static void _PHY_SwChnl8723A(struct rtw_adapter *Adapter, u8 channel)
 {
-	u8 eRFPath;
+	enum RF_RADIO_PATH eRFPath;
 	u32 param1, param2;
 	struct hal_data_8723a *pHalData = GET_HAL_DATA(Adapter);
 
@@ -1088,7 +1078,7 @@
 	for (eRFPath = 0; eRFPath < pHalData->NumTotalRFPath; eRFPath++) {
 		pHalData->RfRegChnlVal[eRFPath] =
 			(pHalData->RfRegChnlVal[eRFPath] & 0xfffffc00) | param2;
-		PHY_SetRFReg(Adapter, (enum RF_RADIO_PATH)eRFPath, param1,
+		PHY_SetRFReg(Adapter, eRFPath, param1,
 			     bRFRegOffsetMask, pHalData->RfRegChnlVal[eRFPath]);
 	}
 
@@ -1101,11 +1091,6 @@
 	u8 tmpchannel = pHalData->CurrentChannel;
 	bool  result = true;
 
-	if (pHalData->rf_chip == RF_PSEUDO_11N) {
-		/* return immediately if it is peudo-phy */
-		return;
-	}
-
 	if (channel == 0)
 		channel = 1;
 
diff --git a/drivers/staging/rtl8723au/hal/rtl8723au_xmit.c b/drivers/staging/rtl8723au/hal/rtl8723au_xmit.c
index 6070510..1759487 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723au_xmit.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723au_xmit.c
@@ -79,7 +79,7 @@
 	}
 }
 
-static void fill_txdesc_vcs(struct pkt_attrib *pattrib, u32 *pdw)
+static void fill_txdesc_vcs(struct pkt_attrib *pattrib, __le32 *pdw)
 {
 	/* DBG_8723A("cvs_mode =%d\n", pattrib->vcs_mode); */
 
@@ -114,7 +114,7 @@
 	}
 }
 
-static void fill_txdesc_phy(struct pkt_attrib *pattrib, u32 *pdw)
+static void fill_txdesc_phy(struct pkt_attrib *pattrib, __le32 *pdw)
 {
 	if (pattrib->ht_en) {
 		*pdw |= (pattrib->bwmode&HT_CHANNEL_WIDTH_40) ? cpu_to_le32(BIT(25)) : 0;
diff --git a/drivers/staging/rtl8723au/hal/usb_halinit.c b/drivers/staging/rtl8723au/hal/usb_halinit.c
index febe5ce..adbf1c2 100644
--- a/drivers/staging/rtl8723au/hal/usb_halinit.c
+++ b/drivers/staging/rtl8723au/hal/usb_halinit.c
@@ -625,10 +625,10 @@
 	}
 
 	/* reducing 80M spur */
-	PHY_SetBBReg(Adapter, RF_T_METER, bMaskDWord, 0x0381808d);
-	PHY_SetBBReg(Adapter, RF_SYN_G4, bMaskDWord, 0xf2ffff83);
-	PHY_SetBBReg(Adapter, RF_SYN_G4, bMaskDWord, 0xf2ffff82);
-	PHY_SetBBReg(Adapter, RF_SYN_G4, bMaskDWord, 0xf2ffff83);
+	PHY_SetBBReg(Adapter, REG_AFE_XTAL_CTRL, bMaskDWord, 0x0381808d);
+	PHY_SetBBReg(Adapter, REG_AFE_PLL_CTRL, bMaskDWord, 0xf0ffff83);
+	PHY_SetBBReg(Adapter, REG_AFE_PLL_CTRL, bMaskDWord, 0xf0ffff82);
+	PHY_SetBBReg(Adapter, REG_AFE_PLL_CTRL, bMaskDWord, 0xf0ffff83);
 
 	/* RFSW Control */
 	PHY_SetBBReg(Adapter, rFPGA0_TxInfo, bMaskDWord, 0x00000003);	/* 0x804[14]= 0 */
@@ -640,8 +640,10 @@
 	/*  */
 	/*  Joseph Note: Keep RfRegChnlVal for later use. */
 	/*  */
-	pHalData->RfRegChnlVal[0] = PHY_QueryRFReg(Adapter, (enum RF_RADIO_PATH)0, RF_CHNLBW, bRFRegOffsetMask);
-	pHalData->RfRegChnlVal[1] = PHY_QueryRFReg(Adapter, (enum RF_RADIO_PATH)1, RF_CHNLBW, bRFRegOffsetMask);
+	pHalData->RfRegChnlVal[0] = PHY_QueryRFReg(Adapter, RF_PATH_A,
+						   RF_CHNLBW, bRFRegOffsetMask);
+	pHalData->RfRegChnlVal[1] = PHY_QueryRFReg(Adapter, RF_PATH_B,
+						   RF_CHNLBW, bRFRegOffsetMask);
 
 	if (!mac_on) {
 		_InitQueueReservedPage(Adapter);
diff --git a/drivers/staging/rtl8723au/include/Hal8723APhyCfg.h b/drivers/staging/rtl8723au/include/Hal8723APhyCfg.h
index 688f204..2247d98 100644
--- a/drivers/staging/rtl8723au/include/Hal8723APhyCfg.h
+++ b/drivers/staging/rtl8723au/include/Hal8723APhyCfg.h
@@ -17,46 +17,9 @@
 #define __INC_HAL8723PHYCFG_H__
 
 /*--------------------------Define Parameters-------------------------------*/
-#define LOOP_LIMIT				5
-#define MAX_STALL_TIME		50		/* us */
-#define AntennaDiversityValue	0x80
-#define MAX_TXPWR_IDX_NMODE_92S	63
-#define Reset_Cnt_Limit		3
-
-
 #define MAX_AGGR_NUM	0x0909
 
-/*--------------------------Define Parameters-------------------------------*/
-
-
 /*------------------------------Define structure----------------------------*/
-enum swchnlcmdid {
-	CmdID_End,
-	CmdID_SetTxPowerLevel,
-	CmdID_BBRegWrite10,
-	CmdID_WritePortUlong,
-	CmdID_WritePortUshort,
-	CmdID_WritePortUchar,
-	CmdID_RF_WriteReg,
-};
-
-
-/* 1. Switch channel related */
-struct swchnlcmd {
-	enum swchnlcmdid	CmdID;
-	u32			Para1;
-	u32			Para2;
-	u32			msDelay;
-};
-
-enum HW90_BLOCK {
-	HW90_BLOCK_MAC = 0,
-	HW90_BLOCK_PHY0 = 1,
-	HW90_BLOCK_PHY1 = 2,
-	HW90_BLOCK_RF = 3,
-	HW90_BLOCK_MAXIMUM = 4, /*  Never use this */
-};
-
 enum RF_RADIO_PATH {
 	RF_PATH_A = 0,			/* Radio Path A */
 	RF_PATH_B = 1,			/* Radio Path B */
@@ -64,7 +27,6 @@
 };
 
 #define CHANNEL_MAX_NUMBER		14	/*  14 is the max channel number */
-#define CHANNEL_GROUP_MAX		3	/*  ch1~3, ch4~9, ch10~14 total three groups */
 
 enum WIRELESS_MODE {
 	WIRELESS_MODE_UNKNOWN	= 0x00,
@@ -77,22 +39,6 @@
 	WIRELESS_MODE_AC	= BIT(6)
 };
 
-enum baseband_config_type {
-	BaseBand_Config_PHY_REG = 0,			/* Radio Path A */
-	BaseBand_Config_AGC_TAB = 1,			/* Radio Path B */
-};
-
-enum ra_offset_area {
-	RA_OFFSET_LEGACY_OFDM1,
-	RA_OFFSET_LEGACY_OFDM2,
-	RA_OFFSET_HT_OFDM1,
-	RA_OFFSET_HT_OFDM2,
-	RA_OFFSET_HT_OFDM3,
-	RA_OFFSET_HT_OFDM4,
-	RA_OFFSET_HT_CCK,
-};
-
-
 /* BB/RF related */
 enum rf_type_8190p {
 	RF_TYPE_MIN,		/*  0 */
@@ -100,7 +46,6 @@
 	RF_8256 = 2,		/*  2 11b/g/n */
 	RF_8258 = 3,		/*  3 11a/b/g/n RF */
 	RF_6052 = 4,		/*  4 11b/g/n RF */
-	RF_PSEUDO_11N = 5,	/*  5, It is a temporality RF. */
 };
 
 struct bb_reg_define {
diff --git a/drivers/staging/rtl8723au/include/Hal8723PwrSeq.h b/drivers/staging/rtl8723au/include/Hal8723PwrSeq.h
index 4a1f58f..3771d6b 100644
--- a/drivers/staging/rtl8723au/include/Hal8723PwrSeq.h
+++ b/drivers/staging/rtl8723au/include/Hal8723PwrSeq.h
@@ -39,10 +39,10 @@
  * { offset, cut_msk, fab_msk|interface_msk, base|cmd, msk, value },  comments here
  */
 #define RTL8723A_TRANS_CARDEMU_TO_ACT														\
-	{0x0020, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), BIT(0)}, /*0x20[0] = 1b'1 enable LDOA12 MACRO block for all interface*/ \
-	{0x0067, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), 0}, /*0x67[0] = 0 to disable BT_GPS_SEL pins*/	\
-	{0x0001, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_DELAY, 1, PWRSEQ_DELAY_MS},/*Delay 1ms*/   \
-	{0x0000, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(5), 0}, /*0x00[5] = 1b'0 release analog Ips to digital , 1:isolation*/   \
+	{0x0020, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), BIT(0)}, /*0x20[0] = 1b'1 enable LDOA12 MACRO block for all interface*/ \
+	{0x0067, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), 0}, /*0x67[0] = 0 to disable BT_GPS_SEL pins*/	\
+	{0x0001, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_DELAY, 1, PWRSEQ_DELAY_MS},/*Delay 1ms*/   \
+	{0x0000, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(5), 0}, /*0x00[5] = 1b'0 release analog Ips to digital , 1:isolation*/   \
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(2), 0},/* disable SW LPS 0x04[10]= 0*/	\
 	{0x0006, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_POLLING, BIT(1), BIT(1)},/* wait till 0x04[17] = 1    power ready*/	\
 	{0x0006, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), BIT(0)},/* release WLON reset  0x04[16]= 1*/ \
@@ -57,48 +57,28 @@
 	{0x004E, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(7), 0},/*0x4C[23] = 0x4E[7] = 0, switch DPDT_SEL_P output from register 0x65[2] */\
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(1), BIT(1)}, /*0x04[9] = 1 turn off MAC by HW state machine*/	\
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_POLLING, BIT(1), 0}, /*wait till 0x04[9] = 0 polling until return 0 to disable*/	\
-	{0x0000, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(5), BIT(5)}, /*0x00[5] = 1b'1 analog Ips to digital , 1:isolation*/   \
-	{0x0020, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), 0}, /*0x20[0] = 1b'0 disable LDOA12 MACRO block*/   \
+	{0x0000, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(5), BIT(5)}, /*0x00[5] = 1b'1 analog Ips to digital , 1:isolation*/   \
+	{0x0020, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), 0}, /*0x20[0] = 1b'0 disable LDOA12 MACRO block*/   \
 
 
 #define RTL8723A_TRANS_CARDEMU_TO_SUS													\
-	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_PCI_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4)|BIT(3), (BIT(4)|BIT(3))}, /*0x04[12:11] = 2b'11 enable WL suspend for PCIe*/	\
-	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), BIT(3)}, /*0x04[12:11] = 2b'01 enable WL suspend*/	\
-	{0x0023, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), BIT(4)}, /*0x23[4] = 1b'1 12H LDO enter sleep mode*/   \
-	{0x0007, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x20}, /*0x07[7:0] = 0x20 SDIO SOP option to disable BG/MB/ACK/SWR*/   \
-	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_PCI_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), BIT(3)|BIT(4)}, /*0x04[12:11] = 2b'11 enable WL suspend for PCIe*/	\
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_WRITE, BIT(0), BIT(0)}, /*Set SDIO suspend local register*/	\
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_POLLING, BIT(1), 0}, /*wait power state to suspend*/
+	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), BIT(3)}, /*0x04[12:11] = 2b'01 enable WL suspend*/
 
 #define RTL8723A_TRANS_SUS_TO_CARDEMU													\
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3) | BIT(7), 0}, /*clear suspend enable and power down enable*/	\
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_WRITE, BIT(0), 0}, /*Set SDIO suspend local register*/	\
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_POLLING, BIT(1), BIT(1)}, /*wait power state to suspend*/\
-	{0x0023, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), 0}, /*0x23[4] = 1b'0 12H LDO enter normal mode*/   \
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), 0}, /*0x04[12:11] = 2b'01enable WL suspend*/
 
 #define RTL8723A_TRANS_CARDEMU_TO_CARDDIS													\
-	{0x0007, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x20}, /*0x07 = 0x20 , SOP option to disable BG/MB*/	\
-	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK|PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), BIT(3)}, /*0x04[12:11] = 2b'01 enable WL suspend*/	\
-	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_PCI_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(2), BIT(2)}, /*0x04[10] = 1, enable SW LPS*/	\
-	{0x004A, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), 1}, /*0x48[16] = 1 to enable GPIO9 as EXT WAKEUP*/   \
-	{0x0023, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), BIT(4)}, /*0x23[4] = 1b'1 12H LDO enter sleep mode*/   \
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_WRITE, BIT(0), BIT(0)}, /*Set SDIO suspend local register*/	\
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_POLLING, BIT(1), 0}, /*wait power state to suspend*/
+	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), BIT(3)}, /*0x04[12:11] = 2b'01 enable WL suspend*/	\
+	{0x004A, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), BIT(0)}, /*0x48[16] = 1 to enable GPIO9 as EXT WAKEUP*/
 
 #define RTL8723A_TRANS_CARDDIS_TO_CARDEMU													\
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3) | BIT(7), 0}, /*clear suspend enable and power down enable*/	\
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_WRITE, BIT(0), 0}, /*Set SDIO suspend local register*/	\
-	{0x0086, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_POLLING, BIT(1), BIT(1)}, /*wait power state to suspend*/\
 	{0x004A, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), 0}, /*0x48[16] = 0 to disable GPIO9 as EXT WAKEUP*/   \
-	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), 0}, /*0x04[12:11] = 2b'01enable WL suspend*/\
-	{0x0023, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), 0}, /*0x23[4] = 1b'0 12H LDO enter normal mode*/   \
-	{0x0301, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_PCI_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0},/*PCIe DMA start*/
-
+	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(3)|BIT(4), 0}, /*0x04[12:11] = 2b'01enable WL suspend*/
 
 #define RTL8723A_TRANS_CARDEMU_TO_PDN												\
-	{0x0023, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), BIT(4)}, /*0x23[4] = 1b'1 12H LDO enter sleep mode*/   \
-	{0x0007, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK|PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x20}, /*0x07[7:0] = 0x20 SOP option to disable BG/MB/ACK/SWR*/   \
+	{0x0007, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x20}, /*0x07[7:0] = 0x20 SOP option to disable BG/MB/ACK/SWR*/   \
 	{0x0006, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(0), 0},/* 0x04[16] = 0*/\
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(7), BIT(7)},/* 0x04[15] = 1*/
 
@@ -106,7 +86,6 @@
 	{0x0005, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(7), 0},/* 0x04[15] = 0*/
 
 #define RTL8723A_TRANS_ACT_TO_LPS														\
-	{0x0301, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_PCI_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0xFF},/*PCIe DMA stop*/	\
 	{0x0522, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0xFF},/*Tx Pause*/	\
 	{0x05F8, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_POLLING, 0xFF, 0},/*Should be zero if no packet is transmitting*/	\
 	{0x05F9, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_POLLING, 0xFF, 0},/*Should be zero if no packet is transmitting*/	\
@@ -117,13 +96,10 @@
 	{0x0002, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(1), 0},/*Whole BB is reset*/	\
 	{0x0100, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x03},/*Reset MAC TRX*/	\
 	{0x0101, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(1), 0},/*check if removed later*/	\
-	{0x0093, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x00},/*When driver enter Sus/ Disable, enable LOP for BT*/	\
 	{0x0553, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(5), BIT(5)},/*Respond TxOK to scheduler*/
 
 #define RTL8723A_TRANS_LPS_TO_ACT															\
-	{0x0080, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, PWR_BASEADDR_SDIO, PWR_CMD_WRITE, 0xFF, 0x84}, /*SDIO RPWM*/\
 	{0xFE58, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_USB_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x84}, /*USB RPWM*/\
-	{0x0361, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_PCI_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, 0xFF, 0x84}, /*PCIe RPWM*/\
 	{0x0002, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_DELAY, 0, PWRSEQ_DELAY_MS}, /*Delay*/\
 	{0x0008, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_WRITE, BIT(4), 0}, /*.	0x08[4] = 0		 switch TSF to 40M*/\
 	{0x0109, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_ALL_MSK, PWR_BASEADDR_MAC, PWR_CMD_POLLING, BIT(7), 0}, /*Polling 0x109[7]= 0  TSF in 40M*/\
diff --git a/drivers/staging/rtl8723au/include/rtl8723a_bt-coexist.h b/drivers/staging/rtl8723au/include/rtl8723a_bt-coexist.h
index 0506965..7add5df 100644
--- a/drivers/staging/rtl8723au/include/rtl8723a_bt-coexist.h
+++ b/drivers/staging/rtl8723au/include/rtl8723a_bt-coexist.h
@@ -31,8 +31,8 @@
 
 void BT_SignalCompensation(struct rtw_adapter *padapter,
 			   u8 *rssi_wifi, u8 *rssi_bt);
-void BT_HaltProcess(struct rtw_adapter * padapter);
-void BT_LpsLeave(struct rtw_adapter * padapter);
+void BT_HaltProcess(struct rtw_adapter *padapter);
+void BT_LpsLeave(struct rtw_adapter *padapter);
 
 
 #define	BT_HsConnectionEstablished(Adapter)		false
@@ -1092,17 +1092,20 @@
 	BTHCI_StateMachine(_Adapter, _StateToEnter, _StateCmd, _EntryNum);\
 }
 
-void BTHCI_EventParse(struct rtw_adapter * padapter, void *pEvntData, u32 dataLen);
+void BTHCI_EventParse(struct rtw_adapter *padapter, void *pEvntData,
+		      u32 dataLen);
 #define BT_EventParse BTHCI_EventParse
-u8 BTHCI_HsConnectionEstablished(struct rtw_adapter * padapter);
-void BTHCI_UpdateBTProfileRTKToMoto(struct rtw_adapter * padapter);
-void BTHCI_WifiScanNotify(struct rtw_adapter * padapter, u8 scanType);
-void BTHCI_StateMachine(struct rtw_adapter * padapter, u8 StateToEnter, enum hci_state_with_cmd StateCmd, u8 EntryNum);
-void BTHCI_DisconnectPeer(struct rtw_adapter * padapter, u8 EntryNum);
-void BTHCI_EventNumOfCompletedDataBlocks(struct rtw_adapter * padapter);
-void BTHCI_EventAMPStatusChange(struct rtw_adapter * padapter, u8 AMP_Status);
-void BTHCI_DisconnectAll(struct rtw_adapter * padapter);
-enum hci_status BTHCI_HandleHCICMD(struct rtw_adapter * padapter, struct packet_irp_hcicmd_data *pHciCmd);
+u8 BTHCI_HsConnectionEstablished(struct rtw_adapter *padapter);
+void BTHCI_UpdateBTProfileRTKToMoto(struct rtw_adapter *padapter);
+void BTHCI_WifiScanNotify(struct rtw_adapter *padapter, u8 scanType);
+void BTHCI_StateMachine(struct rtw_adapter *padapter, u8 StateToEnter,
+			enum hci_state_with_cmd StateCmd, u8 EntryNum);
+void BTHCI_DisconnectPeer(struct rtw_adapter *padapter, u8 EntryNum);
+void BTHCI_EventNumOfCompletedDataBlocks(struct rtw_adapter *padapter);
+void BTHCI_EventAMPStatusChange(struct rtw_adapter *padapter, u8 AMP_Status);
+void BTHCI_DisconnectAll(struct rtw_adapter *padapter);
+enum hci_status BTHCI_HandleHCICMD(struct rtw_adapter *padapter,
+				   struct packet_irp_hcicmd_data *pHciCmd);
 
 /*  ===== End of sync from SD7 driver COMMON/bt_hci.h ===== */
 
@@ -1157,9 +1160,10 @@
 	u8		bRAChanged;
 };
 
-void BTDM_1AntSignalCompensation(struct rtw_adapter * padapter, u8 *rssi_wifi, u8 *rssi_bt);
-void BTDM_1AntForDhcp(struct rtw_adapter * padapter);
-void BTDM_1AntBtCoexist8723A(struct rtw_adapter * padapter);
+void BTDM_1AntSignalCompensation(struct rtw_adapter *padapter,
+				 u8 *rssi_wifi, u8 *rssi_bt);
+void BTDM_1AntForDhcp(struct rtw_adapter *padapter);
+void BTDM_1AntBtCoexist8723A(struct rtw_adapter *padapter);
 
 /*  ===== End of sync from SD7 driver HAL/BTCoexist/HalBtc87231Ant.h ===== */
 
@@ -1241,7 +1245,7 @@
 	u8	btStatus;
 };
 
-void BTDM_2AntBtCoexist8723A(struct rtw_adapter * padapter);
+void BTDM_2AntBtCoexist8723A(struct rtw_adapter *padapter);
 /*  ===== End of sync from SD7 driver HAL/BTCoexist/HalBtc87232Ant.h ===== */
 
 /*  ===== Below this line is sync from SD7 driver HAL/BTCoexist/HalBtc8723.h ===== */
@@ -1310,15 +1314,17 @@
 	struct btdm_8723a_1ant			btdm1Ant;
 };
 
-void BTDM_SetFwChnlInfo(struct rtw_adapter * padapter, enum rt_media_status mstatus);
-u8 BTDM_IsWifiConnectionExist(struct rtw_adapter * padapter);
-void BTDM_SetFw3a(struct rtw_adapter * padapter, u8 byte1, u8 byte2, u8 byte3, u8 byte4, u8 byte5);
-void BTDM_QueryBtInformation(struct rtw_adapter * padapter);
-void BTDM_SetSwRfRxLpfCorner(struct rtw_adapter * padapter, u8 type);
-void BTDM_SetSwPenaltyTxRateAdaptive(struct rtw_adapter * padapter, u8 raType);
-void BTDM_SetFwDecBtPwr(struct rtw_adapter * padapter, u8 bDecBtPwr);
-u8 BTDM_BtProfileSupport(struct rtw_adapter * padapter);
-void BTDM_LpsLeave(struct rtw_adapter * padapter);
+void BTDM_SetFwChnlInfo(struct rtw_adapter *padapter,
+			enum rt_media_status mstatus);
+u8 BTDM_IsWifiConnectionExist(struct rtw_adapter *padapter);
+void BTDM_SetFw3a(struct rtw_adapter *padapter, u8 byte1, u8 byte2, u8 byte3,
+		  u8 byte4, u8 byte5);
+void BTDM_QueryBtInformation(struct rtw_adapter *padapter);
+void BTDM_SetSwRfRxLpfCorner(struct rtw_adapter *padapter, u8 type);
+void BTDM_SetSwPenaltyTxRateAdaptive(struct rtw_adapter *padapter, u8 raType);
+void BTDM_SetFwDecBtPwr(struct rtw_adapter *padapter, u8 bDecBtPwr);
+u8 BTDM_BtProfileSupport(struct rtw_adapter *padapter);
+void BTDM_LpsLeave(struct rtw_adapter *padapter);
 
 /*  ===== End of sync from SD7 driver HAL/BTCoexist/HalBtc8723.h ===== */
 
@@ -1340,8 +1346,9 @@
 #define BTDM_ANT_BT						2
 
 
-void BTDM_SingleAnt(struct rtw_adapter * padapter, u8 bSingleAntOn, u8 bInterruptOn, u8 bMultiNAVOn);
-void BTDM_CheckBTIdleChange1Ant(struct rtw_adapter * padapter);
+void BTDM_SingleAnt(struct rtw_adapter *padapter, u8 bSingleAntOn,
+		    u8 bInterruptOn, u8 bMultiNAVOn);
+void BTDM_CheckBTIdleChange1Ant(struct rtw_adapter *padapter);
 
 /*  ===== End of sync from SD7 driver HAL/BTCoexist/HalBtcCsr1Ant.h ===== */
 
@@ -1361,7 +1368,8 @@
 #define	BT_DACSWING_M7				2
 #define	BT_DACSWING_M10				3
 
-void BTDM_DiminishWiFi(struct rtw_adapter * Adapter, u8 bDACOn, u8 bInterruptOn, u8 DACSwingLevel, u8 bNAVOn);
+void BTDM_DiminishWiFi(struct rtw_adapter *Adapter, u8 bDACOn, u8 bInterruptOn,
+		       u8 DACSwingLevel, u8 bNAVOn);
 
 /*  ===== End of sync from SD7 driver HAL/BTCoexist/HalBtcCsr2Ant.h ===== */
 
@@ -1534,58 +1542,63 @@
 	u8			fw3aVal[5];
 };
 
-void BTDM_CheckAntSelMode(struct rtw_adapter * padapter);
-void BTDM_FwC2hBtRssi(struct rtw_adapter * padapter, u8 *tmpBuf);
+void BTDM_CheckAntSelMode(struct rtw_adapter *padapter);
+void BTDM_FwC2hBtRssi(struct rtw_adapter *padapter, u8 *tmpBuf);
 #define BT_FwC2hBtRssi BTDM_FwC2hBtRssi
-void BTDM_DisplayBtCoexInfo(struct rtw_adapter * padapter);
+void BTDM_DisplayBtCoexInfo(struct rtw_adapter *padapter);
 #define BT_DisplayBtCoexInfo BTDM_DisplayBtCoexInfo
-void BTDM_RejectAPAggregatedPacket(struct rtw_adapter * padapter, u8 bReject);
-u8 BTDM_IsHT40(struct rtw_adapter * padapter);
-u8 BTDM_Legacy(struct rtw_adapter * padapter);
-void BTDM_CheckWiFiState(struct rtw_adapter * padapter);
-s32 BTDM_GetRxSS(struct rtw_adapter * padapter);
-u8 BTDM_CheckCoexBcnRssiState(struct rtw_adapter * padapter, u8 levelNum, u8 RssiThresh, u8 RssiThresh1);
-u8 BTDM_CheckCoexRSSIState1(struct rtw_adapter * padapter, u8 levelNum, u8 RssiThresh, u8 RssiThresh1);
-u8 BTDM_CheckCoexRSSIState(struct rtw_adapter * padapter, u8 levelNum, u8 RssiThresh, u8 RssiThresh1);
-void BTDM_Balance(struct rtw_adapter * padapter, u8 bBalanceOn, u8 ms0, u8 ms1);
-void BTDM_AGCTable(struct rtw_adapter * padapter, u8 type);
-void BTDM_BBBackOffLevel(struct rtw_adapter * padapter, u8 type);
-void BTDM_FWCoexAllOff(struct rtw_adapter * padapter);
-void BTDM_SWCoexAllOff(struct rtw_adapter * padapter);
-void BTDM_HWCoexAllOff(struct rtw_adapter * padapter);
-void BTDM_CoexAllOff(struct rtw_adapter * padapter);
-void BTDM_TurnOffBtCoexistBeforeEnterIPS(struct rtw_adapter * padapter);
-void BTDM_SignalCompensation(struct rtw_adapter * padapter, u8 *rssi_wifi, u8 *rssi_bt);
-void BTDM_UpdateCoexState(struct rtw_adapter * padapter);
-u8 BTDM_IsSameCoexistState(struct rtw_adapter * padapter);
-void BTDM_PWDBMonitor(struct rtw_adapter * padapter);
-u8 BTDM_IsBTBusy(struct rtw_adapter * padapter);
+void BTDM_RejectAPAggregatedPacket(struct rtw_adapter *padapter, u8 bReject);
+u8 BTDM_IsHT40(struct rtw_adapter *padapter);
+u8 BTDM_Legacy(struct rtw_adapter *padapter);
+void BTDM_CheckWiFiState(struct rtw_adapter *padapter);
+s32 BTDM_GetRxSS(struct rtw_adapter *padapter);
+u8 BTDM_CheckCoexBcnRssiState(struct rtw_adapter *padapter, u8 levelNum,
+			      u8 RssiThresh, u8 RssiThresh1);
+u8 BTDM_CheckCoexRSSIState1(struct rtw_adapter *padapter, u8 levelNum,
+			    u8 RssiThresh, u8 RssiThresh1);
+u8 BTDM_CheckCoexRSSIState(struct rtw_adapter *padapter, u8 levelNum,
+			   u8 RssiThresh, u8 RssiThresh1);
+void BTDM_Balance(struct rtw_adapter *padapter, u8 bBalanceOn, u8 ms0, u8 ms1);
+void BTDM_AGCTable(struct rtw_adapter *padapter, u8 type);
+void BTDM_BBBackOffLevel(struct rtw_adapter *padapter, u8 type);
+void BTDM_FWCoexAllOff(struct rtw_adapter *padapter);
+void BTDM_SWCoexAllOff(struct rtw_adapter *padapter);
+void BTDM_HWCoexAllOff(struct rtw_adapter *padapter);
+void BTDM_CoexAllOff(struct rtw_adapter *padapter);
+void BTDM_TurnOffBtCoexistBeforeEnterIPS(struct rtw_adapter *padapter);
+void BTDM_SignalCompensation(struct rtw_adapter *padapter, u8 *rssi_wifi,
+			     u8 *rssi_bt);
+void BTDM_UpdateCoexState(struct rtw_adapter *padapter);
+u8 BTDM_IsSameCoexistState(struct rtw_adapter *padapter);
+void BTDM_PWDBMonitor(struct rtw_adapter *padapter);
+u8 BTDM_IsBTBusy(struct rtw_adapter *padapter);
 #define BT_IsBtBusy BTDM_IsBTBusy
-u8 BTDM_IsWifiBusy(struct rtw_adapter * padapter);
-u8 BTDM_IsCoexistStateChanged(struct rtw_adapter * padapter);
-u8 BTDM_IsWifiUplink(struct rtw_adapter * padapter);
-u8 BTDM_IsWifiDownlink(struct rtw_adapter * padapter);
-u8 BTDM_IsBTHSMode(struct rtw_adapter * padapter);
-u8 BTDM_IsBTUplink(struct rtw_adapter * padapter);
-u8 BTDM_IsBTDownlink(struct rtw_adapter * padapter);
-void BTDM_AdjustForBtOperation(struct rtw_adapter * padapter);
-void BTDM_ForHalt(struct rtw_adapter * padapter);
-void BTDM_WifiScanNotify(struct rtw_adapter * padapter, u8 scanType);
-void BTDM_WifiAssociateNotify(struct rtw_adapter * padapter, u8 action);
-void BTDM_MediaStatusNotify(struct rtw_adapter * padapter, enum rt_media_status mstatus);
-void BTDM_ForDhcp(struct rtw_adapter * padapter);
-void BTDM_ResetActionProfileState(struct rtw_adapter * padapter);
-void BTDM_SetBtCoexCurrAntNum(struct rtw_adapter * padapter, u8 antNum);
+u8 BTDM_IsWifiBusy(struct rtw_adapter *padapter);
+u8 BTDM_IsCoexistStateChanged(struct rtw_adapter *padapter);
+u8 BTDM_IsWifiUplink(struct rtw_adapter *padapter);
+u8 BTDM_IsWifiDownlink(struct rtw_adapter *padapter);
+u8 BTDM_IsBTHSMode(struct rtw_adapter *padapter);
+u8 BTDM_IsBTUplink(struct rtw_adapter *padapter);
+u8 BTDM_IsBTDownlink(struct rtw_adapter *padapter);
+void BTDM_AdjustForBtOperation(struct rtw_adapter *padapter);
+void BTDM_ForHalt(struct rtw_adapter *padapter);
+void BTDM_WifiScanNotify(struct rtw_adapter *padapter, u8 scanType);
+void BTDM_WifiAssociateNotify(struct rtw_adapter *padapter, u8 action);
+void BTDM_MediaStatusNotify(struct rtw_adapter *padapter,
+			    enum rt_media_status mstatus);
+void BTDM_ForDhcp(struct rtw_adapter *padapter);
+void BTDM_ResetActionProfileState(struct rtw_adapter *padapter);
+void BTDM_SetBtCoexCurrAntNum(struct rtw_adapter *padapter, u8 antNum);
 #define BT_SetBtCoexCurrAntNum BTDM_SetBtCoexCurrAntNum
-u8 BTDM_IsActionSCO(struct rtw_adapter * padapter);
-u8 BTDM_IsActionHID(struct rtw_adapter * padapter);
-u8 BTDM_IsActionA2DP(struct rtw_adapter * padapter);
-u8 BTDM_IsActionPAN(struct rtw_adapter * padapter);
-u8 BTDM_IsActionHIDA2DP(struct rtw_adapter * padapter);
-u8 BTDM_IsActionHIDPAN(struct rtw_adapter * padapter);
-u8 BTDM_IsActionPANA2DP(struct rtw_adapter * padapter);
-u32 BTDM_BtTxRxCounterH(struct rtw_adapter * padapter);
-u32 BTDM_BtTxRxCounterL(struct rtw_adapter * padapter);
+u8 BTDM_IsActionSCO(struct rtw_adapter *padapter);
+u8 BTDM_IsActionHID(struct rtw_adapter *padapter);
+u8 BTDM_IsActionA2DP(struct rtw_adapter *padapter);
+u8 BTDM_IsActionPAN(struct rtw_adapter *padapter);
+u8 BTDM_IsActionHIDA2DP(struct rtw_adapter *padapter);
+u8 BTDM_IsActionHIDPAN(struct rtw_adapter *padapter);
+u8 BTDM_IsActionPANA2DP(struct rtw_adapter *padapter);
+u32 BTDM_BtTxRxCounterH(struct rtw_adapter *padapter);
+u32 BTDM_BtTxRxCounterL(struct rtw_adapter *padapter);
 
 /*  ===== End of sync from SD7 driver HAL/BTCoexist/HalBtCoexist.h ===== */
 
@@ -1593,14 +1606,14 @@
 
 #define RTS_CTS_NO_LEN_LIMIT	0
 
-u8 HALBT_GetPGAntNum(struct rtw_adapter * padapter);
+u8 HALBT_GetPGAntNum(struct rtw_adapter *padapter);
 #define BT_GetPGAntNum HALBT_GetPGAntNum
-void HALBT_SetKey(struct rtw_adapter * padapter, u8 EntryNum);
-void HALBT_RemoveKey(struct rtw_adapter * padapter, u8 EntryNum);
-u8 HALBT_IsBTExist(struct rtw_adapter * padapter);
+void HALBT_SetKey(struct rtw_adapter *padapter, u8 EntryNum);
+void HALBT_RemoveKey(struct rtw_adapter *padapter, u8 EntryNum);
+u8 HALBT_IsBTExist(struct rtw_adapter *padapter);
 #define BT_IsBtExist HALBT_IsBTExist
-u8 HALBT_BTChipType(struct rtw_adapter * padapter);
-void HALBT_SetRtsCtsNoLenLimit(struct rtw_adapter * padapter);
+u8 HALBT_BTChipType(struct rtw_adapter *padapter);
+void HALBT_SetRtsCtsNoLenLimit(struct rtw_adapter *padapter);
 
 /*  ===== End of sync from SD7 driver HAL/HalBT.c ===== */
 
diff --git a/drivers/staging/rtl8723au/include/rtl8723a_recv.h b/drivers/staging/rtl8723au/include/rtl8723a_recv.h
index 0177bbc..875d37b 100644
--- a/drivers/staging/rtl8723au/include/rtl8723a_recv.h
+++ b/drivers/staging/rtl8723au/include/rtl8723a_recv.h
@@ -56,8 +56,8 @@
 	unsigned int  MSG_EX;
 };
 
-int rtl8723au_init_recv_priv(struct rtw_adapter * padapter);
-void rtl8723au_free_recv_priv(struct rtw_adapter * padapter);
+int rtl8723au_init_recv_priv(struct rtw_adapter *padapter);
+void rtl8723au_free_recv_priv(struct rtw_adapter *padapter);
 void rtl8723a_process_phy_info(struct rtw_adapter *padapter, void *prframe);
 void update_recvframe_attrib(struct recv_frame *precvframe, struct recv_stat *prxstat);
 void update_recvframe_phyinfo(struct recv_frame *precvframe, struct phy_stat *pphy_info);
diff --git a/drivers/staging/rtl8723au/include/rtw_cmd.h b/drivers/staging/rtl8723au/include/rtw_cmd.h
index 71044107..92c8ec4 100644
--- a/drivers/staging/rtl8723au/include/rtw_cmd.h
+++ b/drivers/staging/rtl8723au/include/rtw_cmd.h
@@ -689,10 +689,10 @@
 int rtw_setopmode_cmd23a(struct rtw_adapter *padapter, enum nl80211_iftype ifmode);
 int rtw_setdatarate_cmd(struct rtw_adapter  *padapter, u8 *rateset);
 int rtw_setbasicrate_cmd(struct rtw_adapter  *padapter, u8 *rateset);
-int rtw_setbbreg_cmd(struct rtw_adapter * padapter, u8 offset, u8 val);
-int rtw_setrfreg_cmd(struct rtw_adapter * padapter, u8 offset, u32 val);
-int rtw_getbbreg_cmd(struct rtw_adapter * padapter, u8 offset, u8 * pval);
-int rtw_getrfreg_cmd(struct rtw_adapter * padapter, u8 offset, u8 * pval);
+int rtw_setbbreg_cmd(struct rtw_adapter *padapter, u8 offset, u8 val);
+int rtw_setrfreg_cmd(struct rtw_adapter *padapter, u8 offset, u32 val);
+int rtw_getbbreg_cmd(struct rtw_adapter *padapter, u8 offset, u8 *pval);
+int rtw_getrfreg_cmd(struct rtw_adapter *padapter, u8 offset, u8 *pval);
 int rtw_setrfintfs_cmd(struct rtw_adapter  *padapter, u8 mode);
 int rtw_setrttbl_cmd(struct rtw_adapter  *padapter, struct setratable_parm *prate_table);
 int rtw_getrttbl_cmd(struct rtw_adapter  *padapter, struct getratable_rsp *pval);
diff --git a/drivers/staging/rtl8723au/include/rtw_mlme_ext.h b/drivers/staging/rtl8723au/include/rtw_mlme_ext.h
index 51dba1f..ffb37b2 100644
--- a/drivers/staging/rtl8723au/include/rtw_mlme_ext.h
+++ b/drivers/staging/rtl8723au/include/rtw_mlme_ext.h
@@ -509,7 +509,7 @@
 			  struct ieee80211_mgmt *mgmt, u32 packet_len);
 void update_IOT_info23a(struct rtw_adapter *padapter);
 void update_capinfo23a(struct rtw_adapter *Adapter, u16 updateCap);
-void update_wireless_mode23a(struct rtw_adapter * padapter);
+void update_wireless_mode23a(struct rtw_adapter *padapter);
 void update_tx_basic_rate23a(struct rtw_adapter *padapter, u8 modulation);
 void update_bmc_sta_support_rate23a(struct rtw_adapter *padapter, u32 mac_id);
 int update_sta_support_rate23a(struct rtw_adapter *padapter, u8 *pvar_ie,
diff --git a/drivers/staging/rtl8723au/include/wifi.h b/drivers/staging/rtl8723au/include/wifi.h
index fd3da3b..25d573c 100644
--- a/drivers/staging/rtl8723au/include/wifi.h
+++ b/drivers/staging/rtl8723au/include/wifi.h
@@ -26,9 +26,9 @@
 ------------------------------------------------------------------------------*/
 
 struct AC_param {
-	unsigned char		ACI_AIFSN;
-	unsigned char		CW;
-	unsigned short	TXOP_limit;
+	u8			ACI_AIFSN;
+	u8			CW;
+	__le16			TXOP_limit;
 }  __packed;
 
 struct WMM_para_element {
@@ -38,10 +38,10 @@
 }  __packed;
 
 struct ADDBA_request {
-	unsigned char		dialog_token;
-	unsigned short	BA_para_set;
-	unsigned short	BA_timeout_value;
-	unsigned short	BA_starting_seqctrl;
+	u8		dialog_token;
+	__le16		BA_para_set;
+	__le16		BA_timeout_value;
+	__le16		BA_starting_seqctrl;
 }  __packed;
 
 
diff --git a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
index 82a8c06..9e1304f 100644
--- a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
+++ b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
@@ -1468,9 +1468,8 @@
 		return 0;
 	}
 
-	if (wpa_version & (NL80211_WPA_VERSION_1 | NL80211_WPA_VERSION_2)) {
+	if (wpa_version & (NL80211_WPA_VERSION_1 | NL80211_WPA_VERSION_2))
 		psecuritypriv->ndisauthtype = Ndis802_11AuthModeWPAPSK;
-	}
 
 /*
 	if (wpa_version & NL80211_WPA_VERSION_2)
diff --git a/drivers/staging/rtl8723au/os_dep/usb_intf.c b/drivers/staging/rtl8723au/os_dep/usb_intf.c
index 373a617..5007349 100644
--- a/drivers/staging/rtl8723au/os_dep/usb_intf.c
+++ b/drivers/staging/rtl8723au/os_dep/usb_intf.c
@@ -80,11 +80,9 @@
 	struct usb_config_descriptor *pconf_desc;
 	struct usb_host_interface *phost_iface;
 	struct usb_interface_descriptor *piface_desc;
-	struct usb_host_endpoint *phost_endp;
 	struct usb_endpoint_descriptor *pendp_desc;
-	struct usb_device		 *pusbd;
-	int	i;
-	int	status = _FAIL;
+	struct usb_device *pusbd;
+	int i, status = _FAIL;
 
 	pdvobjpriv = kzalloc(sizeof(*pdvobjpriv), GFP_KERNEL);
 	if (!pdvobjpriv)
@@ -114,42 +112,38 @@
 	pdvobjpriv->nr_endpoint = piface_desc->bNumEndpoints;
 
 	for (i = 0; i < pdvobjpriv->nr_endpoint; i++) {
-		phost_endp = phost_iface->endpoint + i;
-		if (phost_endp) {
-			pendp_desc = &phost_endp->desc;
+		pendp_desc = &phost_iface->endpoint[i].desc;
 
-			DBG_8723A("\nusb_endpoint_descriptor(%d):\n", i);
-			DBG_8723A("bLength =%x\n", pendp_desc->bLength);
-			DBG_8723A("bDescriptorType =%x\n",
-				  pendp_desc->bDescriptorType);
-			DBG_8723A("bEndpointAddress =%x\n",
-				  pendp_desc->bEndpointAddress);
-			DBG_8723A("wMaxPacketSize =%d\n",
-				  le16_to_cpu(pendp_desc->wMaxPacketSize));
-			DBG_8723A("bInterval =%x\n", pendp_desc->bInterval);
+		DBG_8723A("\nusb_endpoint_descriptor(%d):\n", i);
+		DBG_8723A("bLength =%x\n", pendp_desc->bLength);
+		DBG_8723A("bDescriptorType =%x\n", pendp_desc->bDescriptorType);
+		DBG_8723A("bEndpointAddress =%x\n",
+			  pendp_desc->bEndpointAddress);
+		DBG_8723A("wMaxPacketSize =%d\n",
+			  le16_to_cpu(pendp_desc->wMaxPacketSize));
+		DBG_8723A("bInterval =%x\n", pendp_desc->bInterval);
 
-			if (usb_endpoint_is_bulk_in(pendp_desc)) {
-				DBG_8723A("usb_endpoint_is_bulk_in = %x\n",
-					  usb_endpoint_num(pendp_desc));
-				pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] =
-					usb_endpoint_num(pendp_desc);
-				pdvobjpriv->RtNumInPipes++;
-			} else if (usb_endpoint_is_int_in(pendp_desc)) {
-				DBG_8723A("usb_endpoint_is_int_in = %x, Interval = %x\n",
-					  usb_endpoint_num(pendp_desc),
-					  pendp_desc->bInterval);
-				pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] =
-					usb_endpoint_num(pendp_desc);
-				pdvobjpriv->RtNumInPipes++;
-			} else if (usb_endpoint_is_bulk_out(pendp_desc)) {
-				DBG_8723A("usb_endpoint_is_bulk_out = %x\n",
-					  usb_endpoint_num(pendp_desc));
-				pdvobjpriv->RtOutPipe[pdvobjpriv->RtNumOutPipes] =
-					usb_endpoint_num(pendp_desc);
-				pdvobjpriv->RtNumOutPipes++;
-			}
-			pdvobjpriv->ep_num[i] = usb_endpoint_num(pendp_desc);
+		if (usb_endpoint_is_bulk_in(pendp_desc)) {
+			DBG_8723A("usb_endpoint_is_bulk_in = %x\n",
+				  usb_endpoint_num(pendp_desc));
+			pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] =
+				usb_endpoint_num(pendp_desc);
+			pdvobjpriv->RtNumInPipes++;
+		} else if (usb_endpoint_is_int_in(pendp_desc)) {
+			DBG_8723A("usb_endpoint_is_int_in = %x, Interval = "
+				  "%x\n", usb_endpoint_num(pendp_desc),
+				  pendp_desc->bInterval);
+			pdvobjpriv->RtInPipe[pdvobjpriv->RtNumInPipes] =
+				usb_endpoint_num(pendp_desc);
+			pdvobjpriv->RtNumInPipes++;
+		} else if (usb_endpoint_is_bulk_out(pendp_desc)) {
+			DBG_8723A("usb_endpoint_is_bulk_out = %x\n",
+				  usb_endpoint_num(pendp_desc));
+			pdvobjpriv->RtOutPipe[pdvobjpriv->RtNumOutPipes] =
+				usb_endpoint_num(pendp_desc);
+			pdvobjpriv->RtNumOutPipes++;
 		}
+		pdvobjpriv->ep_num[i] = usb_endpoint_num(pendp_desc);
 	}
 	DBG_8723A("nr_endpoint =%d, in_num =%d, out_num =%d\n\n",
 		  pdvobjpriv->nr_endpoint, pdvobjpriv->RtNumInPipes,
diff --git a/drivers/staging/rts5208/ms.c b/drivers/staging/rts5208/ms.c
index b4612fb..a47a191 100644
--- a/drivers/staging/rts5208/ms.c
+++ b/drivers/staging/rts5208/ms.c
@@ -781,7 +781,7 @@
 	buf[4] = 0;
 	buf[5] = 0;
 
-	retval = ms_write_bytes(chip, PRO_WRITE_REG , 6, NO_WAIT_INT, buf, 6);
+	retval = ms_write_bytes(chip, PRO_WRITE_REG, 6, NO_WAIT_INT, buf, 6);
 	if (retval != STATUS_SUCCESS)
 		TRACE_RET(chip, STATUS_FAIL);
 
@@ -1291,7 +1291,7 @@
 	for (i = 6; i < MS_EXTRA_SIZE + 6; i++)
 		data[i] = buf[i - 6];
 
-	retval = ms_write_bytes(chip, WRITE_REG , (6+MS_EXTRA_SIZE),
+	retval = ms_write_bytes(chip, WRITE_REG, (6 + MS_EXTRA_SIZE),
 				NO_WAIT_INT, data, 16);
 	if (retval != STATUS_SUCCESS)
 		TRACE_RET(chip, STATUS_FAIL);
@@ -1342,7 +1342,7 @@
 	data[4] = 0x20;
 	data[5] = page_num;
 
-	retval = ms_write_bytes(chip, WRITE_REG , 6, NO_WAIT_INT, data, 6);
+	retval = ms_write_bytes(chip, WRITE_REG, 6, NO_WAIT_INT, data, 6);
 	if (retval != STATUS_SUCCESS)
 		TRACE_RET(chip, STATUS_FAIL);
 
@@ -1619,7 +1619,7 @@
 		data[4] = 0x20;
 		data[5] = i;
 
-		retval = ms_write_bytes(chip, WRITE_REG , 6, NO_WAIT_INT,
+		retval = ms_write_bytes(chip, WRITE_REG, 6, NO_WAIT_INT,
 					data, 6);
 		if (retval != STATUS_SUCCESS)
 			TRACE_RET(chip, STATUS_FAIL);
@@ -1695,7 +1695,7 @@
 		}
 
 		retval = ms_set_rw_reg_addr(chip, OverwriteFlag,
-				MS_EXTRA_SIZE, SystemParm, (6+MS_EXTRA_SIZE));
+				MS_EXTRA_SIZE, SystemParm, (6 + MS_EXTRA_SIZE));
 
 		ms_set_err_code(chip, MS_NO_ERROR);
 
@@ -1988,7 +1988,7 @@
 		RTSX_WRITE_REG(chip, PPBUF_BASE2, 0xFF, 0x88);
 		RTSX_WRITE_REG(chip, PPBUF_BASE2 + 1, 0xFF, 0);
 
-		retval = ms_transfer_tpc(chip, MS_TM_WRITE_BYTES, WRITE_REG , 1,
+		retval = ms_transfer_tpc(chip, MS_TM_WRITE_BYTES, WRITE_REG, 1,
 					NO_WAIT_INT);
 		if (retval != STATUS_SUCCESS)
 			TRACE_RET(chip, STATUS_FAIL);
diff --git a/drivers/staging/skein/skein_block.c b/drivers/staging/skein/skein_block.c
index 66261ab..9bd69ce 100644
--- a/drivers/staging/skein/skein_block.c
+++ b/drivers/staging/skein/skein_block.c
@@ -82,10 +82,7 @@
 } while (0)
 #else
 /* looping version */
-#define R256(p0, p1, p2, p3, ROT, r_num) \
-do { \
-	ROUND256(p0, p1, p2, p3, ROT, r_num); \
-} while (0)
+#define R256(p0, p1, p2, p3, ROT, r_num) ROUND256(p0, p1, p2, p3, ROT, r_num)
 
 #define I256(R) \
 do { \
@@ -174,9 +171,7 @@
 
 #else /* looping version */
 #define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num)                 \
-do {                                                                     \
-	ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num);            \
-} while (0)
+	ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num)             \
 
 #define I512(R)                                                           \
 do {                                                                      \
@@ -263,10 +258,8 @@
 #if SKEIN_UNROLL_1024 == 0
 #define R1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, pF, \
 	      ROT, rn)                                                        \
-do {                                                                          \
 	ROUND1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
-		  pF, ROT, rn);                                               \
-} while (0)
+		  pF, ROT, rn)                                                \
 
 #define I1024(R)                                                          \
 do {                                                                      \
@@ -291,10 +284,8 @@
 #else /* looping version */
 #define R1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, pF, \
 	      ROT, rn)                                                        \
-do {                                                                          \
 	ROUND1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
-		  pF, ROT, rn);                                               \
-} while (0)
+		  pF, ROT, rn)                                                \
 
 #define I1024(R)                                                           \
 do {                                                                       \
diff --git a/drivers/staging/skein/skein_generic.c b/drivers/staging/skein/skein_generic.c
index 85bd7d0..899078f 100644
--- a/drivers/staging/skein/skein_generic.c
+++ b/drivers/staging/skein/skein_generic.c
@@ -191,7 +191,6 @@
 
 	return 0;
 
-		
 unreg512:
 	crypto_unregister_shash(&alg512);
 unreg256:
diff --git a/drivers/staging/speakup/kobjects.c b/drivers/staging/speakup/kobjects.c
index b12c76d..3708bc1 100644
--- a/drivers/staging/speakup/kobjects.c
+++ b/drivers/staging/speakup/kobjects.c
@@ -566,7 +566,7 @@
 				if (ch >= ' ' && ch < '~')
 					*cp1++ = ch;
 				else
-					cp1 += sprintf(cp1, "\\""x%02x", ch);
+					cp1 += sprintf(cp1, "\\x%02x", ch);
 			}
 			*cp1++ = '"';
 			*cp1++ = '\n';
diff --git a/drivers/staging/speakup/synth.c b/drivers/staging/speakup/synth.c
index f3aa423..01eddab 100644
--- a/drivers/staging/speakup/synth.c
+++ b/drivers/staging/speakup/synth.c
@@ -30,9 +30,9 @@
 	 * must be taken at each kernel->speakup transition and released at
 	 * each corresponding speakup->kernel transition.
 	 *
-	 * The progression thread only interferes with the speakup machinery through
-	 * the synth buffer, so only needs to take the lock while tinkering with
-	 * the buffer.
+	 * The progression thread only interferes with the speakup machinery
+	 * through the synth buffer, so only needs to take the lock
+	 * while tinkering with the buffer.
 	 *
 	 * We use spin_lock/trylock_irqsave and spin_unlock_irqrestore with this
 	 * spinlock because speakup needs to disable the keyboard IRQ.
diff --git a/drivers/staging/unisys/Kconfig b/drivers/staging/unisys/Kconfig
index ac080c9..19fcb34 100644
--- a/drivers/staging/unisys/Kconfig
+++ b/drivers/staging/unisys/Kconfig
@@ -12,7 +12,6 @@
 source "drivers/staging/unisys/visorutil/Kconfig"
 source "drivers/staging/unisys/visorchannel/Kconfig"
 source "drivers/staging/unisys/visorchipset/Kconfig"
-source "drivers/staging/unisys/channels/Kconfig"
 source "drivers/staging/unisys/uislib/Kconfig"
 source "drivers/staging/unisys/virtpci/Kconfig"
 source "drivers/staging/unisys/virthba/Kconfig"
diff --git a/drivers/staging/unisys/Makefile b/drivers/staging/unisys/Makefile
index b988d69..68b9925 100644
--- a/drivers/staging/unisys/Makefile
+++ b/drivers/staging/unisys/Makefile
@@ -4,7 +4,6 @@
 obj-$(CONFIG_UNISYS_VISORUTIL)		+= visorutil/
 obj-$(CONFIG_UNISYS_VISORCHANNEL)	+= visorchannel/
 obj-$(CONFIG_UNISYS_VISORCHIPSET)	+= visorchipset/
-obj-$(CONFIG_UNISYS_CHANNELSTUB)	+= channels/
 obj-$(CONFIG_UNISYS_UISLIB)		+= uislib/
 obj-$(CONFIG_UNISYS_VIRTPCI)		+= virtpci/
 obj-$(CONFIG_UNISYS_VIRTHBA)		+= virthba/
diff --git a/drivers/staging/unisys/channels/Kconfig b/drivers/staging/unisys/channels/Kconfig
deleted file mode 100644
index 179c6ce..0000000
--- a/drivers/staging/unisys/channels/Kconfig
+++ /dev/null
@@ -1,10 +0,0 @@
-#
-# Unisys channels configuration
-#
-
-config UNISYS_CHANNELSTUB
-	tristate "Unisys channelstub driver"
-	depends on UNISYSSPAR && UNISYS_VISORUTIL
-	---help---
-	If you say Y here, you will enable the Unisys channels driver.
-
diff --git a/drivers/staging/unisys/channels/Makefile b/drivers/staging/unisys/channels/Makefile
deleted file mode 100644
index adc1842..0000000
--- a/drivers/staging/unisys/channels/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-#
-# Makefile for Unisys channelstub
-#
-
-obj-$(CONFIG_UNISYS_CHANNELSTUB)	+= visorchannelstub.o
-
-visorchannelstub-y := channel.o chanstub.o
-
-ccflags-y += -Idrivers/staging/unisys/include
-ccflags-y += -Idrivers/staging/unisys/common-spar/include
-ccflags-y += -Idrivers/staging/unisys/common-spar/include/channels
diff --git a/drivers/staging/unisys/channels/channel.c b/drivers/staging/unisys/channels/channel.c
deleted file mode 100644
index 74cc4d6..0000000
--- a/drivers/staging/unisys/channels/channel.c
+++ /dev/null
@@ -1,219 +0,0 @@
-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- */
-
-#include <linux/kernel.h>
-#ifdef CONFIG_MODVERSIONS
-#include <config/modversions.h>
-#endif
-#include <linux/module.h>
-#include <linux/init.h>		/* for module_init and module_exit */
-#include <linux/slab.h>		/* for memcpy */
-#include <linux/types.h>
-
-/* Implementation of exported functions for Supervisor channels */
-#include "channel.h"
-
-/*
- * Routine Description:
- * Tries to insert the prebuilt signal pointed to by pSignal into the nth
- * Queue of the Channel pointed to by pChannel
- *
- * Parameters:
- * pChannel: (IN) points to the IO Channel
- * Queue: (IN) nth Queue of the IO Channel
- * pSignal: (IN) pointer to the signal
- *
- * Assumptions:
- * - pChannel, Queue and pSignal are valid.
- * - If insertion fails due to a full queue, the caller will determine the
- * retry policy (e.g. wait & try again, report an error, etc.).
- *
- * Return value:
- * 1 if the insertion succeeds, 0 if the queue was full.
- */
-unsigned char spar_signal_insert(struct channel_header __iomem *ch, u32 queue,
-				 void *sig)
-{
-	void __iomem *psignal;
-	unsigned int head, tail, nof;
-
-	struct signal_queue_header __iomem *pqhdr =
-	    (struct signal_queue_header __iomem *)
-		((char __iomem *)ch + readq(&ch->ch_space_offset))
-		+ queue;
-
-	/* capture current head and tail */
-	head = readl(&pqhdr->head);
-	tail = readl(&pqhdr->tail);
-
-	/* queue is full if (head + 1) % n equals tail */
-	if (((head + 1) % readl(&pqhdr->max_slots)) == tail) {
-		nof = readq(&pqhdr->num_overflows) + 1;
-		writeq(nof, &pqhdr->num_overflows);
-		return 0;
-	}
-
-	/* increment the head index */
-	head = (head + 1) % readl(&pqhdr->max_slots);
-
-	/* copy signal to the head location from the area pointed to
-	 * by pSignal
-	 */
-	psignal = (char __iomem *)pqhdr + readq(&pqhdr->sig_base_offset) +
-		(head * readl(&pqhdr->signal_size));
-	memcpy_toio(psignal, sig, readl(&pqhdr->signal_size));
-
-	mb(); /* channel synch */
-	writel(head, &pqhdr->head);
-
-	writeq(readq(&pqhdr->num_sent) + 1, &pqhdr->num_sent);
-	return 1;
-}
-EXPORT_SYMBOL_GPL(spar_signal_insert);
-
-/*
- * Routine Description:
- * Removes one signal from Channel pChannel's nth Queue at the
- * time of the call and copies it into the memory pointed to by
- * pSignal.
- *
- * Parameters:
- * pChannel: (IN) points to the IO Channel
- * Queue: (IN) nth Queue of the IO Channel
- * pSignal: (IN) pointer to where the signals are to be copied
- *
- * Assumptions:
- * - pChannel and Queue are valid.
- * - pSignal points to a memory area large enough to hold queue's SignalSize
- *
- * Return value:
- * 1 if the removal succeeds, 0 if the queue was empty.
- */
-unsigned char
-spar_signal_remove(struct channel_header __iomem *ch, u32 queue, void *sig)
-{
-	void __iomem *psource;
-	unsigned int head, tail;
-	struct signal_queue_header __iomem *pqhdr =
-	    (struct signal_queue_header __iomem *)((char __iomem *)ch +
-				    readq(&ch->ch_space_offset)) + queue;
-
-	/* capture current head and tail */
-	head = readl(&pqhdr->head);
-	tail = readl(&pqhdr->tail);
-
-	/* queue is empty if the head index equals the tail index */
-	if (head == tail) {
-		writeq(readq(&pqhdr->num_empty) + 1, &pqhdr->num_empty);
-		return 0;
-	}
-
-	/* advance past the 'empty' front slot */
-	tail = (tail + 1) % readl(&pqhdr->max_slots);
-
-	/* copy signal from tail location to the area pointed to by pSignal */
-	psource = (char __iomem *)pqhdr + readq(&pqhdr->sig_base_offset) +
-		(tail * readl(&pqhdr->signal_size));
-	memcpy_fromio(sig, psource, readl(&pqhdr->signal_size));
-
-	mb(); /* channel synch */
-	writel(tail, &pqhdr->tail);
-
-	writeq(readq(&pqhdr->num_received) + 1,
-	       &pqhdr->num_received);
-	return 1;
-}
-EXPORT_SYMBOL_GPL(spar_signal_remove);
-
-/*
- * Routine Description:
- * Removes all signals present in Channel pChannel's nth Queue at the
- * time of the call and copies them into the memory pointed to by
- * pSignal.  Returns the # of signals copied as the value of the routine.
- *
- * Parameters:
- * pChannel: (IN) points to the IO Channel
- * Queue: (IN) nth Queue of the IO Channel
- * pSignal: (IN) pointer to where the signals are to be copied
- *
- * Assumptions:
- * - pChannel and Queue are valid.
- * - pSignal points to a memory area large enough to hold Queue's MaxSignals
- * # of signals, each of which is Queue's SignalSize.
- *
- * Return value:
- * # of signals copied.
- */
-unsigned int spar_signal_remove_all(struct channel_header *ch, u32 queue,
-				    void *sig)
-{
-	void *psource;
-	unsigned int head, tail, count = 0;
-	struct signal_queue_header *pqhdr =
-	    (struct signal_queue_header *)((char *)ch +
-				    ch->ch_space_offset) + queue;
-
-	/* capture current head and tail */
-	head = pqhdr->head;
-	tail = pqhdr->tail;
-
-	/* queue is empty if the head index equals the tail index */
-	if (head == tail)
-		return 0;
-
-	while (head != tail) {
-		/* advance past the 'empty' front slot */
-		tail = (tail + 1) % pqhdr->max_slots;
-
-		/* copy signal from tail location to the area pointed
-		 * to by pSignal
-		 */
-		psource =
-		    (char *)pqhdr + pqhdr->sig_base_offset +
-		    (tail * pqhdr->signal_size);
-		memcpy((char *)sig + (pqhdr->signal_size * count),
-		       psource, pqhdr->signal_size);
-
-		mb(); /* channel synch */
-		pqhdr->tail = tail;
-
-		count++;
-		pqhdr->num_received++;
-	}
-
-	return count;
-}
-
-/*
- * Routine Description:
- * Determine whether a signal queue is empty.
- *
- * Parameters:
- * pChannel: (IN) points to the IO Channel
- * Queue: (IN) nth Queue of the IO Channel
- *
- * Return value:
- * 1 if the signal queue is empty, 0 otherwise.
- */
-unsigned char spar_signalqueue_empty(struct channel_header __iomem *ch,
-				     u32 queue)
-{
-	struct signal_queue_header __iomem *pqhdr =
-	    (struct signal_queue_header __iomem *)((char __iomem *)ch +
-				    readq(&ch->ch_space_offset)) + queue;
-	return readl(&pqhdr->head) == readl(&pqhdr->tail);
-}
-EXPORT_SYMBOL_GPL(spar_signalqueue_empty);
-
diff --git a/drivers/staging/unisys/channels/chanstub.c b/drivers/staging/unisys/channels/chanstub.c
deleted file mode 100644
index b6fd126..0000000
--- a/drivers/staging/unisys/channels/chanstub.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- */
-
-#define EXPORT_SYMTAB
-#include <linux/kernel.h>
-#ifdef CONFIG_MODVERSIONS
-#include <config/modversions.h>
-#endif
-#include <linux/module.h>
-#include <linux/init.h>		/* for module_init and module_exit */
-#include <linux/slab.h>		/* for memcpy */
-#include <linux/types.h>
-
-#include "channel.h"
-#include "chanstub.h"
-#include "timskmod.h"
-#include "version.h"
-
-static __init int
-channel_mod_init(void)
-{
-	if (!unisys_spar_platform)
-		return -ENODEV;
-	return 0;
-}
-
-static __exit void
-channel_mod_exit(void)
-{
-}
-
-unsigned char
-SignalInsert_withLock(struct channel_header __iomem *pChannel, u32 Queue,
-		      void *pSignal, spinlock_t *lock)
-{
-	unsigned char result;
-	unsigned long flags;
-
-	spin_lock_irqsave(lock, flags);
-	result = spar_signal_insert(pChannel, Queue, pSignal);
-	spin_unlock_irqrestore(lock, flags);
-	return result;
-}
-
-unsigned char
-SignalRemove_withLock(struct channel_header __iomem *pChannel, u32 Queue,
-		      void *pSignal, spinlock_t *lock)
-{
-	unsigned char result;
-
-	spin_lock(lock);
-	result = spar_signal_remove(pChannel, Queue, pSignal);
-	spin_unlock(lock);
-	return result;
-}
-
-module_init(channel_mod_init);
-module_exit(channel_mod_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Bryan Glaudel");
-MODULE_ALIAS("uischan");
-	/* this is extracted during depmod and kept in modules.dep */
diff --git a/drivers/staging/unisys/channels/chanstub.h b/drivers/staging/unisys/channels/chanstub.h
deleted file mode 100644
index 1531759..0000000
--- a/drivers/staging/unisys/channels/chanstub.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/* Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- */
-
-#ifndef __CHANSTUB_H__
-#define __CHANSTUB_H__
-unsigned char SignalInsert_withLock(struct channel_header __iomem *pChannel,
-				    u32 Queue, void *pSignal, spinlock_t *lock);
-unsigned char SignalRemove_withLock(struct channel_header __iomem *pChannel,
-				    u32 Queue, void *pSignal, spinlock_t *lock);
-
-#endif
diff --git a/drivers/staging/unisys/common-spar/include/version.h b/drivers/staging/unisys/common-spar/include/version.h
index f25208f..83d1da7 100644
--- a/drivers/staging/unisys/common-spar/include/version.h
+++ b/drivers/staging/unisys/common-spar/include/version.h
@@ -30,7 +30,6 @@
 #define SPARVER4 "0"
 
 #define  VERSION        SPARVER1 "." SPARVER2 "." SPARVER3 "." SPARVER4
-#define  VERSIONDATE    __DATE__
 
 /* Here are various version forms needed in Windows environments.
  */
diff --git a/drivers/staging/unisys/uislib/Kconfig b/drivers/staging/unisys/uislib/Kconfig
index 6b134e2..a712eb8 100644
--- a/drivers/staging/unisys/uislib/Kconfig
+++ b/drivers/staging/unisys/uislib/Kconfig
@@ -4,7 +4,7 @@
 
 config UNISYS_UISLIB
 	tristate "Unisys uislib driver"
-	depends on UNISYSSPAR && UNISYS_VISORCHIPSET && UNISYS_CHANNELSTUB && HAS_IOMEM
+	depends on UNISYSSPAR && UNISYS_VISORCHIPSET && HAS_IOMEM
 	---help---
 	If you say Y here, you will enable the Unisys uislib driver.
 
diff --git a/drivers/staging/unisys/uislib/uislib.c b/drivers/staging/unisys/uislib/uislib.c
index 7c87452a..a9eedde 100644
--- a/drivers/staging/unisys/uislib/uislib.c
+++ b/drivers/staging/unisys/uislib/uislib.c
@@ -41,7 +41,6 @@
 
 #include "sparstop.h"
 #include "visorchipset.h"
-#include "chanstub.h"
 #include "version.h"
 #include "guestlinuxdebug.h"
 
@@ -59,8 +58,8 @@
 /* global function pointers that act as callback functions into virtpcimod */
 int (*virt_control_chan_func)(struct guest_msgs *);
 
-static int ProcReadBufferValid;
-static char *ProcReadBuffer;	/* Note this MUST be global,
+static int debug_buf_valid;
+static char *debug_buf;	/* Note this MUST be global,
 					 * because the contents must */
 static unsigned int chipset_inited;
 
@@ -71,24 +70,24 @@
 		UIS_THREAD_WAIT;	\
 	} while (1)
 
-static struct bus_info *BusListHead;
-static rwlock_t BusListLock;
-static int BusListCount;	/* number of buses in the list */
-static int MaxBusCount;		/* maximum number of buses expected */
-static u64 PhysicalDataChan;
-static int PlatformNumber;
+static struct bus_info *bus_list;
+static rwlock_t bus_list_lock;
+static int bus_list_count;	/* number of buses in the list */
+static int max_bus_count;		/* maximum number of buses expected */
+static u64 phys_data_chan;
+static int platform_no;
 
-static struct uisthread_info Incoming_ThreadInfo;
-static BOOL Incoming_Thread_Started = FALSE;
-static LIST_HEAD(List_Polling_Device_Channels);
+static struct uisthread_info incoming_ti;
+static BOOL incoming_started = FALSE;
+static LIST_HEAD(poll_dev_chan);
 static unsigned long long tot_moved_to_tail_cnt;
 static unsigned long long tot_wait_cnt;
 static unsigned long long tot_wakeup_cnt;
 static unsigned long long tot_schedule_cnt;
 static int en_smart_wakeup = 1;
-static DEFINE_SEMAPHORE(Lock_Polling_Device_Channels);	/* unlocked */
-static DECLARE_WAIT_QUEUE_HEAD(Wakeup_Polling_Device_Channels);
-static int Go_Polling_Device_Channels;
+static DEFINE_SEMAPHORE(poll_dev_lock);	/* unlocked */
+static DECLARE_WAIT_QUEUE_HEAD(poll_dev_wake_q);
+static int poll_dev_start;
 
 #define CALLHOME_PROC_ENTRY_FN "callhome"
 #define CALLHOME_THROTTLED_PROC_ENTRY_FN "callhome_throttled"
@@ -115,7 +114,7 @@
 /*****************************************************/
 
 static ssize_t info_debugfs_read(struct file *file, char __user *buf,
-			      size_t len, loff_t *offset);
+				 size_t len, loff_t *offset);
 static const struct file_operations debugfs_info_fops = {
 	.read = info_debugfs_read,
 };
@@ -129,58 +128,52 @@
 	msg->hdr.flags.server = svr;
 }
 
-static __iomem void *
-init_vbus_channel(u64 channelAddr, u32 channelBytes)
+static __iomem void *init_vbus_channel(u64 ch_addr, u32 ch_bytes)
 {
-	void __iomem *rc = NULL;
-	void __iomem *pChan = uislib_ioremap_cache(channelAddr, channelBytes);
+	void __iomem *ch = uislib_ioremap_cache(ch_addr, ch_bytes);
 
-	if (!pChan) {
+	if (!ch) {
 		LOGERR("CONTROLVM_BUS_CREATE error: ioremap_cache of channelAddr:%Lx for channelBytes:%llu failed",
-		     (unsigned long long) channelAddr,
-		     (unsigned long long) channelBytes);
-		rc = NULL;
-		goto Away;
+		       (unsigned long long)ch_addr,
+		       (unsigned long long)ch_bytes);
+		return NULL;
 	}
-	if (!SPAR_VBUS_CHANNEL_OK_CLIENT(pChan)) {
+	if (!SPAR_VBUS_CHANNEL_OK_CLIENT(ch)) {
 		ERRDRV("%s channel cannot be used", __func__);
-		uislib_iounmap(pChan);
-		rc = NULL;
-		goto Away;
+		uislib_iounmap(ch);
+		return NULL;
 	}
-	rc = pChan;
-Away:
-	return rc;
+	return ch;
 }
 
 static int
 create_bus(struct controlvm_message *msg, char *buf)
 {
-	u32 busNo, deviceCount;
+	u32 bus_no, dev_count;
 	struct bus_info *tmp, *bus;
 	size_t size;
 
-	if (MaxBusCount == BusListCount) {
+	if (max_bus_count == bus_list_count) {
 		LOGERR("CONTROLVM_BUS_CREATE Failed: max buses:%d already created\n",
-		     MaxBusCount);
-		POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, MaxBusCount,
+		       max_bus_count);
+		POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, max_bus_count,
 				 POSTCODE_SEVERITY_ERR);
 		return CONTROLVM_RESP_ERROR_MAX_BUSES;
 	}
 
-	busNo = msg->cmd.create_bus.bus_no;
-	deviceCount = msg->cmd.create_bus.dev_count;
+	bus_no = msg->cmd.create_bus.bus_no;
+	dev_count = msg->cmd.create_bus.dev_count;
 
-	POSTCODE_LINUX_4(BUS_CREATE_ENTRY_PC, busNo, deviceCount,
+	POSTCODE_LINUX_4(BUS_CREATE_ENTRY_PC, bus_no, dev_count,
 			 POSTCODE_SEVERITY_INFO);
 
 	size =
 	    sizeof(struct bus_info) +
-	    (deviceCount * sizeof(struct device_info *));
+	    (dev_count * sizeof(struct device_info *));
 	bus = kzalloc(size, GFP_ATOMIC);
 	if (!bus) {
 		LOGERR("CONTROLVM_BUS_CREATE Failed: kmalloc for bus failed.\n");
-		POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo,
+		POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus_no,
 				 POSTCODE_SEVERITY_ERR);
 		return CONTROLVM_RESP_ERROR_KMALLOC_FAILED;
 	}
@@ -191,27 +184,29 @@
 	if (msg->hdr.flags.test_message) {
 		/* This implies we're the IOVM so set guest handle to 0... */
 		bus->guest_handle = 0;
-		bus->bus_no = busNo;
+		bus->bus_no = bus_no;
 		bus->local_vnic = 1;
-	} else
-		bus->bus_no = bus->guest_handle = busNo;
-	sprintf(bus->name, "%d", (int) bus->bus_no);
-	bus->device_count = deviceCount;
+	} else {
+		bus->bus_no = bus_no;
+		bus->guest_handle = bus_no;
+	}
+	sprintf(bus->name, "%d", (int)bus->bus_no);
+	bus->device_count = dev_count;
 	bus->device =
-	    (struct device_info **) ((char *) bus + sizeof(struct bus_info));
+	    (struct device_info **)((char *)bus + sizeof(struct bus_info));
 	bus->bus_inst_uuid = msg->cmd.create_bus.bus_inst_uuid;
 	bus->bus_channel_bytes = 0;
 	bus->bus_channel = NULL;
 
 	/* add bus to our bus list - but check for duplicates first */
-	read_lock(&BusListLock);
-	for (tmp = BusListHead; tmp; tmp = tmp->next) {
+	read_lock(&bus_list_lock);
+	for (tmp = bus_list; tmp; tmp = tmp->next) {
 		if (tmp->bus_no == bus->bus_no)
 			break;
 	}
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 	if (tmp) {
-		/* found a bus already in the list with same busNo -
+		/* found a bus already in the list with same bus_no -
 		 * reject add
 		 */
 		LOGERR("CONTROLVM_BUS_CREATE Failed: bus %d already exists.\n",
@@ -221,8 +216,8 @@
 		kfree(bus);
 		return CONTROLVM_RESP_ERROR_ALREADY_DONE;
 	}
-	if ((msg->cmd.create_bus.channel_addr != 0)
-	    && (msg->cmd.create_bus.channel_bytes != 0)) {
+	if ((msg->cmd.create_bus.channel_addr != 0) &&
+	    (msg->cmd.create_bus.channel_bytes != 0)) {
 		bus->bus_channel_bytes = msg->cmd.create_bus.channel_bytes;
 		bus->bus_channel =
 		    init_vbus_channel(msg->cmd.create_bus.channel_addr,
@@ -233,9 +228,9 @@
 		struct guest_msgs cmd;
 
 		cmd.msgtype = GUEST_ADD_VBUS;
-		cmd.add_vbus.bus_no = busNo;
+		cmd.add_vbus.bus_no = bus_no;
 		cmd.add_vbus.chanptr = bus->bus_channel;
-		cmd.add_vbus.dev_count = deviceCount;
+		cmd.add_vbus.dev_count = dev_count;
 		cmd.add_vbus.bus_uuid = msg->cmd.create_bus.bus_data_type_uuid;
 		cmd.add_vbus.instance_uuid = msg->cmd.create_bus.bus_inst_uuid;
 		if (!virt_control_chan_func) {
@@ -256,15 +251,15 @@
 	}
 
 	/* add bus at the head of our list */
-	write_lock(&BusListLock);
-	if (!BusListHead)
-		BusListHead = bus;
-	else {
-		bus->next = BusListHead;
-		BusListHead = bus;
+	write_lock(&bus_list_lock);
+	if (!bus_list) {
+		bus_list = bus;
+	} else {
+		bus->next = bus_list;
+		bus_list = bus;
 	}
-	BusListCount++;
-	write_unlock(&BusListLock);
+	bus_list_count++;
+	write_unlock(&bus_list_lock);
 
 	POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC, bus->bus_no,
 			 POSTCODE_SEVERITY_INFO);
@@ -277,15 +272,15 @@
 	int i;
 	struct bus_info *bus, *prev = NULL;
 	struct guest_msgs cmd;
-	u32 busNo;
+	u32 bus_no;
 
-	busNo = msg->cmd.destroy_bus.bus_no;
+	bus_no = msg->cmd.destroy_bus.bus_no;
 
-	read_lock(&BusListLock);
+	read_lock(&bus_list_lock);
 
-	bus = BusListHead;
+	bus = bus_list;
 	while (bus) {
-		if (bus->bus_no == busNo)
+		if (bus->bus_no == bus_no)
 			break;
 		prev = bus;
 		bus = bus->next;
@@ -293,8 +288,8 @@
 
 	if (!bus) {
 		LOGERR("CONTROLVM_BUS_DESTROY Failed: failed to find bus %d.\n",
-		       busNo);
-		read_unlock(&BusListLock);
+		       bus_no);
+		read_unlock(&bus_list_lock);
 		return CONTROLVM_RESP_ERROR_ALREADY_DONE;
 	}
 
@@ -302,12 +297,12 @@
 	for (i = 0; i < bus->device_count; i++) {
 		if (bus->device[i] != NULL) {
 			LOGERR("CONTROLVM_BUS_DESTROY Failed: device %i attached to bus %d.",
-			     i, busNo);
-			read_unlock(&BusListLock);
+			       i, bus_no);
+			read_unlock(&bus_list_lock);
 			return CONTROLVM_RESP_ERROR_BUS_DEVICE_ATTACHED;
 		}
 	}
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 
 	if (msg->hdr.flags.server)
 		goto remove;
@@ -315,7 +310,7 @@
 	/* client messages require us to call the virtpci callback associated
 	   with this bus. */
 	cmd.msgtype = GUEST_DEL_VBUS;
-	cmd.del_vbus.bus_no = busNo;
+	cmd.del_vbus.bus_no = bus_no;
 	if (!virt_control_chan_func) {
 		LOGERR("CONTROLVM_BUS_DESTROY Failed: virtpci callback not registered.");
 		return CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
@@ -327,13 +322,13 @@
 
 	/* finally, remove the bus from the list */
 remove:
-	write_lock(&BusListLock);
+	write_lock(&bus_list_lock);
 	if (prev)	/* not at head */
 		prev->next = bus->next;
 	else
-		BusListHead = bus->next;
-	BusListCount--;
-	write_unlock(&BusListLock);
+		bus_list = bus->next;
+	bus_list_count--;
+	write_unlock(&bus_list_lock);
 
 	if (bus->bus_channel) {
 		uislib_iounmap(bus->bus_channel);
@@ -344,26 +339,26 @@
 	return CONTROLVM_RESP_SUCCESS;
 }
 
-static int
-create_device(struct controlvm_message *msg, char *buf)
+static int create_device(struct controlvm_message *msg, char *buf)
 {
 	struct device_info *dev;
 	struct bus_info *bus;
-	u32 busNo, devNo;
+	struct guest_msgs cmd;
+	u32 bus_no, dev_no;
 	int result = CONTROLVM_RESP_SUCCESS;
-	u64 minSize = MIN_IO_CHANNEL_SIZE;
-	struct req_handler_info *pReqHandler;
+	u64 min_size = MIN_IO_CHANNEL_SIZE;
+	struct req_handler_info *req_handler;
 
-	busNo = msg->cmd.create_device.bus_no;
-	devNo = msg->cmd.create_device.dev_no;
+	bus_no = msg->cmd.create_device.bus_no;
+	dev_no = msg->cmd.create_device.dev_no;
 
-	POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, devNo, busNo,
+	POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, dev_no, bus_no,
 			 POSTCODE_SEVERITY_INFO);
 
-	dev = kzalloc(sizeof(struct device_info), GFP_ATOMIC);
+	dev = kzalloc(sizeof(*dev), GFP_ATOMIC);
 	if (!dev) {
 		LOGERR("CONTROLVM_DEVICE_CREATE Failed: kmalloc for dev failed.\n");
-		POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
+		POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no,
 				 POSTCODE_SEVERITY_ERR);
 		return CONTROLVM_RESP_ERROR_KMALLOC_FAILED;
 	}
@@ -371,169 +366,157 @@
 	dev->channel_uuid = msg->cmd.create_device.data_type_uuid;
 	dev->intr = msg->cmd.create_device.intr;
 	dev->channel_addr = msg->cmd.create_device.channel_addr;
-	dev->bus_no = busNo;
-	dev->dev_no = devNo;
+	dev->bus_no = bus_no;
+	dev->dev_no = dev_no;
 	sema_init(&dev->interrupt_callback_lock, 1);	/* unlocked */
-	sprintf(dev->devid, "vbus%u:dev%u", (unsigned) busNo, (unsigned) devNo);
+	sprintf(dev->devid, "vbus%u:dev%u", (unsigned)bus_no, (unsigned)dev_no);
 	/* map the channel memory for the device. */
-	if (msg->hdr.flags.test_message)
+	if (msg->hdr.flags.test_message) {
 		dev->chanptr = (void __iomem *)__va(dev->channel_addr);
-	else {
-		pReqHandler = req_handler_find(dev->channel_uuid);
-		if (pReqHandler)
+	} else {
+		req_handler = req_handler_find(dev->channel_uuid);
+		if (req_handler)
 			/* generic service handler registered for this
 			 * channel
 			 */
-			minSize = pReqHandler->min_channel_bytes;
-		if (minSize > msg->cmd.create_device.channel_bytes) {
+			min_size = req_handler->min_channel_bytes;
+		if (min_size > msg->cmd.create_device.channel_bytes) {
 			LOGERR("CONTROLVM_DEVICE_CREATE Failed: channel size is too small, channel size:0x%lx, required size:0x%lx",
-			     (ulong) msg->cmd.create_device.channel_bytes,
-			     (ulong) minSize);
-			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
-					 POSTCODE_SEVERITY_ERR);
+			       (ulong)msg->cmd.create_device.channel_bytes,
+			       (ulong)min_size);
+			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no,
+					 bus_no, POSTCODE_SEVERITY_ERR);
 			result = CONTROLVM_RESP_ERROR_CHANNEL_SIZE_TOO_SMALL;
-			goto Away;
+			goto cleanup;
 		}
 		dev->chanptr =
 		    uislib_ioremap_cache(dev->channel_addr,
 					 msg->cmd.create_device.channel_bytes);
 		if (!dev->chanptr) {
 			LOGERR("CONTROLVM_DEVICE_CREATE Failed: ioremap_cache of channelAddr:%Lx for channelBytes:%llu failed",
-			     dev->channel_addr,
-			     msg->cmd.create_device.channel_bytes);
+			       dev->channel_addr,
+			       msg->cmd.create_device.channel_bytes);
 			result = CONTROLVM_RESP_ERROR_IOREMAP_FAILED;
-			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
-					 POSTCODE_SEVERITY_ERR);
-			goto Away;
+			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no,
+					 bus_no, POSTCODE_SEVERITY_ERR);
+			goto cleanup;
 		}
 	}
 	dev->instance_uuid = msg->cmd.create_device.dev_inst_uuid;
 	dev->channel_bytes = msg->cmd.create_device.channel_bytes;
 
-	read_lock(&BusListLock);
-	for (bus = BusListHead; bus; bus = bus->next) {
-		if (bus->bus_no == busNo) {
-			/* make sure the device number is valid */
-			if (devNo >= bus->device_count) {
-				LOGERR("CONTROLVM_DEVICE_CREATE Failed: device (%d) >= deviceCount (%d).",
-				     devNo, bus->device_count);
-				result = CONTROLVM_RESP_ERROR_MAX_DEVICES;
-				POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC,
-						 devNo, busNo,
-						 POSTCODE_SEVERITY_ERR);
-				read_unlock(&BusListLock);
-				goto Away;
-			}
-			/* make sure this device is not already set */
-			if (bus->device[devNo]) {
-				LOGERR("CONTROLVM_DEVICE_CREATE Failed: device %d is already exists.",
-				     devNo);
-				POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC,
-						 devNo, busNo,
-						 POSTCODE_SEVERITY_ERR);
-				result = CONTROLVM_RESP_ERROR_ALREADY_DONE;
-				read_unlock(&BusListLock);
-				goto Away;
-			}
-			read_unlock(&BusListLock);
-			/* the msg is bound for virtpci; send
-			 * guest_msgs struct to callback
-			 */
-			if (!msg->hdr.flags.server) {
-				struct guest_msgs cmd;
-
-				if (!uuid_le_cmp(dev->channel_uuid,
-				     spar_vhba_channel_protocol_uuid)) {
-					wait_for_valid_guid(&((
-						struct channel_header
-							__iomem *) (dev->
-								  chanptr))->
-							    chtype);
-					if (!SPAR_VHBA_CHANNEL_OK_CLIENT
-					    (dev->chanptr)) {
-						LOGERR("CONTROLVM_DEVICE_CREATE Failed:[CLIENT]VHBA dev %d chan invalid.",
-						     devNo);
-						POSTCODE_LINUX_4
-						    (DEVICE_CREATE_FAILURE_PC,
-						     devNo, busNo,
-						     POSTCODE_SEVERITY_ERR);
-						result = CONTROLVM_RESP_ERROR_CHANNEL_INVALID;
-						goto Away;
-					}
-					cmd.msgtype = GUEST_ADD_VHBA;
-					cmd.add_vhba.chanptr = dev->chanptr;
-					cmd.add_vhba.bus_no = busNo;
-					cmd.add_vhba.device_no = devNo;
-					cmd.add_vhba.instance_uuid =
-					    dev->instance_uuid;
-					cmd.add_vhba.intr = dev->intr;
-				} else
-				    if (!uuid_le_cmp(dev->channel_uuid,
-					 spar_vnic_channel_protocol_uuid)) {
-					wait_for_valid_guid(&((
-						struct channel_header
-							__iomem *) (dev->
-								  chanptr))->
-							    chtype);
-					if (!SPAR_VNIC_CHANNEL_OK_CLIENT
-					    (dev->chanptr)) {
-						LOGERR("CONTROLVM_DEVICE_CREATE Failed: VNIC[CLIENT] dev %d chan invalid.",
-						     devNo);
-						POSTCODE_LINUX_4
-						    (DEVICE_CREATE_FAILURE_PC,
-						     devNo, busNo,
-						     POSTCODE_SEVERITY_ERR);
-						result = CONTROLVM_RESP_ERROR_CHANNEL_INVALID;
-						goto Away;
-					}
-					cmd.msgtype = GUEST_ADD_VNIC;
-					cmd.add_vnic.chanptr = dev->chanptr;
-					cmd.add_vnic.bus_no = busNo;
-					cmd.add_vnic.device_no = devNo;
-					cmd.add_vnic.instance_uuid =
-					    dev->instance_uuid;
-					cmd.add_vhba.intr = dev->intr;
-				} else {
-					LOGERR("CONTROLVM_DEVICE_CREATE Failed: unknown channelTypeGuid.\n");
-					POSTCODE_LINUX_4
-					    (DEVICE_CREATE_FAILURE_PC, devNo,
-					     busNo, POSTCODE_SEVERITY_ERR);
-					result = CONTROLVM_RESP_ERROR_CHANNEL_TYPE_UNKNOWN;
-					goto Away;
-				}
-
-				if (!virt_control_chan_func) {
-					LOGERR("CONTROLVM_DEVICE_CREATE Failed: virtpci callback not registered.");
-					POSTCODE_LINUX_4
-					    (DEVICE_CREATE_FAILURE_PC, devNo,
-					     busNo, POSTCODE_SEVERITY_ERR);
-					result = CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
-					goto Away;
-				}
-
-				if (!virt_control_chan_func(&cmd)) {
-					LOGERR("CONTROLVM_DEVICE_CREATE Failed: virtpci GUEST_ADD_[VHBA||VNIC] returned error.");
-					POSTCODE_LINUX_4
-					    (DEVICE_CREATE_FAILURE_PC, devNo,
-					     busNo, POSTCODE_SEVERITY_ERR);
-					result = CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_CALLBACK_ERROR;
-					goto Away;
-				}
-			}
-			bus->device[devNo] = dev;
-			POSTCODE_LINUX_4(DEVICE_CREATE_SUCCESS_PC, devNo, busNo,
-					 POSTCODE_SEVERITY_INFO);
+	read_lock(&bus_list_lock);
+	for (bus = bus_list; bus; bus = bus->next) {
+		if (bus->bus_no != bus_no)
+			continue;
+		/* make sure the device number is valid */
+		if (dev_no >= bus->device_count) {
+			LOGERR("CONTROLVM_DEVICE_CREATE Failed: device (%d) >= deviceCount (%d).",
+			       dev_no, bus->device_count);
+			result = CONTROLVM_RESP_ERROR_MAX_DEVICES;
+			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no,
+					 bus_no, POSTCODE_SEVERITY_ERR);
+			read_unlock(&bus_list_lock);
+			goto cleanup;
+		}
+		/* make sure this device is not already set */
+		if (bus->device[dev_no]) {
+			LOGERR("CONTROLVM_DEVICE_CREATE Failed: device %d is already exists.",
+			       dev_no);
+			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC,
+					 dev_no, bus_no,
+					 POSTCODE_SEVERITY_ERR);
+			result = CONTROLVM_RESP_ERROR_ALREADY_DONE;
+			read_unlock(&bus_list_lock);
+			goto cleanup;
+		}
+		read_unlock(&bus_list_lock);
+		/* the msg is bound for virtpci; send
+		 * guest_msgs struct to callback
+		 */
+		if (msg->hdr.flags.server) {
+			bus->device[dev_no] = dev;
+			POSTCODE_LINUX_4(DEVICE_CREATE_SUCCESS_PC, dev_no,
+					 bus_no, POSTCODE_SEVERITY_INFO);
 			return CONTROLVM_RESP_SUCCESS;
 		}
-	}
-	read_unlock(&BusListLock);
+		if (uuid_le_cmp(dev->channel_uuid,
+				spar_vhba_channel_protocol_uuid) == 0) {
+			wait_for_valid_guid(&((struct channel_header __iomem *)
+					    (dev->chanptr))->chtype);
+			if (!SPAR_VHBA_CHANNEL_OK_CLIENT(dev->chanptr)) {
+				LOGERR("CONTROLVM_DEVICE_CREATE Failed:[CLIENT]VHBA dev %d chan invalid.",
+				       dev_no);
+				POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC,
+						 dev_no, bus_no,
+						 POSTCODE_SEVERITY_ERR);
+				result = CONTROLVM_RESP_ERROR_CHANNEL_INVALID;
+				goto cleanup;
+			}
+			cmd.msgtype = GUEST_ADD_VHBA;
+			cmd.add_vhba.chanptr = dev->chanptr;
+			cmd.add_vhba.bus_no = bus_no;
+			cmd.add_vhba.device_no = dev_no;
+			cmd.add_vhba.instance_uuid = dev->instance_uuid;
+			cmd.add_vhba.intr = dev->intr;
+		} else if (uuid_le_cmp(dev->channel_uuid,
+				       spar_vnic_channel_protocol_uuid) == 0) {
+			wait_for_valid_guid(&((struct channel_header __iomem *)
+					    (dev->chanptr))->chtype);
+			if (!SPAR_VNIC_CHANNEL_OK_CLIENT(dev->chanptr)) {
+				LOGERR("CONTROLVM_DEVICE_CREATE Failed: VNIC[CLIENT] dev %d chan invalid.",
+				       dev_no);
+				POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC,
+						 dev_no, bus_no,
+						 POSTCODE_SEVERITY_ERR);
+				result = CONTROLVM_RESP_ERROR_CHANNEL_INVALID;
+				goto cleanup;
+			}
+			cmd.msgtype = GUEST_ADD_VNIC;
+			cmd.add_vnic.chanptr = dev->chanptr;
+			cmd.add_vnic.bus_no = bus_no;
+			cmd.add_vnic.device_no = dev_no;
+			cmd.add_vnic.instance_uuid = dev->instance_uuid;
+			cmd.add_vhba.intr = dev->intr;
+		} else {
+			LOGERR("CONTROLVM_DEVICE_CREATE Failed: unknown channelTypeGuid.\n");
+			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no,
+					 bus_no, POSTCODE_SEVERITY_ERR);
+			result = CONTROLVM_RESP_ERROR_CHANNEL_TYPE_UNKNOWN;
+			goto cleanup;
+		}
 
-	LOGERR("CONTROLVM_DEVICE_CREATE Failed: failed to find bus %d.", busNo);
-	POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
+		if (!virt_control_chan_func) {
+			LOGERR("CONTROLVM_DEVICE_CREATE Failed: virtpci callback not registered.");
+			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no,
+					 bus_no, POSTCODE_SEVERITY_ERR);
+			result = CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
+			goto cleanup;
+		}
+
+		if (!virt_control_chan_func(&cmd)) {
+			LOGERR("CONTROLVM_DEVICE_CREATE Failed: virtpci GUEST_ADD_[VHBA||VNIC] returned error.");
+			POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no,
+					 bus_no, POSTCODE_SEVERITY_ERR);
+			result =
+			     CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_CALLBACK_ERROR;
+			goto cleanup;
+		}
+
+		bus->device[dev_no] = dev;
+		POSTCODE_LINUX_4(DEVICE_CREATE_SUCCESS_PC, dev_no,
+				 bus_no, POSTCODE_SEVERITY_INFO);
+		return CONTROLVM_RESP_SUCCESS;
+	}
+	read_unlock(&bus_list_lock);
+
+	LOGERR("CONTROLVM_DEVICE_CREATE Failed: failed to find bus %d.",
+	       bus_no);
+	POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no,
 			 POSTCODE_SEVERITY_ERR);
 	result = CONTROLVM_RESP_ERROR_BUS_INVALID;
 
-Away:
+cleanup:
 	if (!msg->hdr.flags.test_message) {
 		uislib_iounmap(dev->chanptr);
 		dev->chanptr = NULL;
@@ -543,32 +526,31 @@
 	return result;
 }
 
-static int
-pause_device(struct controlvm_message *msg)
+static int pause_device(struct controlvm_message *msg)
 {
-	u32 busNo, devNo;
+	u32 bus_no, dev_no;
 	struct bus_info *bus;
 	struct device_info *dev;
 	struct guest_msgs cmd;
 	int retval = CONTROLVM_RESP_SUCCESS;
 
-	busNo = msg->cmd.device_change_state.bus_no;
-	devNo = msg->cmd.device_change_state.dev_no;
+	bus_no = msg->cmd.device_change_state.bus_no;
+	dev_no = msg->cmd.device_change_state.dev_no;
 
-	read_lock(&BusListLock);
-	for (bus = BusListHead; bus; bus = bus->next) {
-		if (bus->bus_no == busNo) {
+	read_lock(&bus_list_lock);
+	for (bus = bus_list; bus; bus = bus->next) {
+		if (bus->bus_no == bus_no) {
 			/* make sure the device number is valid */
-			if (devNo >= bus->device_count) {
+			if (dev_no >= bus->device_count) {
 				LOGERR("CONTROLVM_DEVICE_CHANGESTATE:pause Failed: device(%d) >= deviceCount(%d).",
-				     devNo, bus->device_count);
+				       dev_no, bus->device_count);
 				retval = CONTROLVM_RESP_ERROR_DEVICE_INVALID;
 			} else {
 				/* make sure this device exists */
-				dev = bus->device[devNo];
+				dev = bus->device[dev_no];
 				if (!dev) {
 					LOGERR("CONTROLVM_DEVICE_CHANGESTATE:pause Failed: device %d does not exist.",
-					     devNo);
+					       dev_no);
 					retval =
 					  CONTROLVM_RESP_ERROR_ALREADY_DONE;
 				}
@@ -578,20 +560,20 @@
 	}
 	if (!bus) {
 		LOGERR("CONTROLVM_DEVICE_CHANGESTATE:pause Failed: bus %d does not exist",
-		     busNo);
+		       bus_no);
 		retval = CONTROLVM_RESP_ERROR_BUS_INVALID;
 	}
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 	if (retval == CONTROLVM_RESP_SUCCESS) {
 		/* the msg is bound for virtpci; send
 		 * guest_msgs struct to callback
 		 */
-		if (!uuid_le_cmp(dev->channel_uuid,
-				spar_vhba_channel_protocol_uuid)) {
+		if (uuid_le_cmp(dev->channel_uuid,
+				spar_vhba_channel_protocol_uuid) == 0) {
 			cmd.msgtype = GUEST_PAUSE_VHBA;
 			cmd.pause_vhba.chanptr = dev->chanptr;
-		} else if (!uuid_le_cmp(dev->channel_uuid,
-					spar_vnic_channel_protocol_uuid)) {
+		} else if (uuid_le_cmp(dev->channel_uuid,
+				       spar_vnic_channel_protocol_uuid) == 0) {
 			cmd.msgtype = GUEST_PAUSE_VNIC;
 			cmd.pause_vnic.chanptr = dev->chanptr;
 		} else {
@@ -611,32 +593,31 @@
 	return retval;
 }
 
-static int
-resume_device(struct controlvm_message *msg)
+static int resume_device(struct controlvm_message *msg)
 {
-	u32 busNo, devNo;
+	u32 bus_no, dev_no;
 	struct bus_info *bus;
 	struct device_info *dev;
 	struct guest_msgs cmd;
 	int retval = CONTROLVM_RESP_SUCCESS;
 
-	busNo = msg->cmd.device_change_state.bus_no;
-	devNo = msg->cmd.device_change_state.dev_no;
+	bus_no = msg->cmd.device_change_state.bus_no;
+	dev_no = msg->cmd.device_change_state.dev_no;
 
-	read_lock(&BusListLock);
-	for (bus = BusListHead; bus; bus = bus->next) {
-		if (bus->bus_no == busNo) {
+	read_lock(&bus_list_lock);
+	for (bus = bus_list; bus; bus = bus->next) {
+		if (bus->bus_no == bus_no) {
 			/* make sure the device number is valid */
-			if (devNo >= bus->device_count) {
+			if (dev_no >= bus->device_count) {
 				LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: device(%d) >= deviceCount(%d).",
-				     devNo, bus->device_count);
+				       dev_no, bus->device_count);
 				retval = CONTROLVM_RESP_ERROR_DEVICE_INVALID;
 			} else {
 				/* make sure this device exists */
-				dev = bus->device[devNo];
+				dev = bus->device[dev_no];
 				if (!dev) {
 					LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: device %d does not exist.",
-					     devNo);
+					       dev_no);
 					retval =
 					  CONTROLVM_RESP_ERROR_ALREADY_DONE;
 				}
@@ -647,20 +628,20 @@
 
 	if (!bus) {
 		LOGERR("CONTROLVM_DEVICE_CHANGESTATE:resume Failed: bus %d does not exist",
-		     busNo);
+		       bus_no);
 		retval = CONTROLVM_RESP_ERROR_BUS_INVALID;
 	}
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 	/* the msg is bound for virtpci; send
 	 * guest_msgs struct to callback
 	 */
 	if (retval == CONTROLVM_RESP_SUCCESS) {
-		if (!uuid_le_cmp(dev->channel_uuid,
-				 spar_vhba_channel_protocol_uuid)) {
+		if (uuid_le_cmp(dev->channel_uuid,
+				spar_vhba_channel_protocol_uuid) == 0) {
 			cmd.msgtype = GUEST_RESUME_VHBA;
 			cmd.resume_vhba.chanptr = dev->chanptr;
-		} else if (!uuid_le_cmp(dev->channel_uuid,
-					spar_vnic_channel_protocol_uuid)) {
+		} else if (uuid_le_cmp(dev->channel_uuid,
+				       spar_vnic_channel_protocol_uuid) == 0) {
 			cmd.msgtype = GUEST_RESUME_VNIC;
 			cmd.resume_vnic.chanptr = dev->chanptr;
 		} else {
@@ -680,33 +661,33 @@
 	return retval;
 }
 
-static int
-destroy_device(struct controlvm_message *msg, char *buf)
+static int destroy_device(struct controlvm_message *msg, char *buf)
 {
-	u32 busNo, devNo;
+	u32 bus_no, dev_no;
 	struct bus_info *bus;
 	struct device_info *dev;
 	struct guest_msgs cmd;
 	int retval = CONTROLVM_RESP_SUCCESS;
 
-	busNo = msg->cmd.destroy_device.bus_no;
-	devNo = msg->cmd.destroy_device.bus_no;
+	bus_no = msg->cmd.destroy_device.bus_no;
+	dev_no = msg->cmd.destroy_device.bus_no;
 
-	read_lock(&BusListLock);
-	LOGINF("destroy_device called for busNo=%u, devNo=%u", busNo, devNo);
-	for (bus = BusListHead; bus; bus = bus->next) {
-		if (bus->bus_no == busNo) {
+	read_lock(&bus_list_lock);
+	LOGINF("destroy_device called for bus_no=%u, dev_no=%u", bus_no,
+	       dev_no);
+	for (bus = bus_list; bus; bus = bus->next) {
+		if (bus->bus_no == bus_no) {
 			/* make sure the device number is valid */
-			if (devNo >= bus->device_count) {
-				LOGERR("CONTROLVM_DEVICE_DESTORY Failed: device(%d) >= deviceCount(%d).",
-				       devNo, bus->device_count);
+			if (dev_no >= bus->device_count) {
+				LOGERR("CONTROLVM_DEVICE_DESTROY Failed: device(%d) >= device_count(%d).",
+				       dev_no, bus->device_count);
 				retval = CONTROLVM_RESP_ERROR_DEVICE_INVALID;
 			} else {
 				/* make sure this device exists */
-				dev = bus->device[devNo];
+				dev = bus->device[dev_no];
 				if (!dev) {
 					LOGERR("CONTROLVM_DEVICE_DESTROY Failed: device %d does not exist.",
-					       devNo);
+					       dev_no);
 					retval =
 					     CONTROLVM_RESP_ERROR_ALREADY_DONE;
 				}
@@ -717,20 +698,20 @@
 
 	if (!bus) {
 		LOGERR("CONTROLVM_DEVICE_DESTROY Failed: bus %d does not exist",
-		       busNo);
+		       bus_no);
 		retval = CONTROLVM_RESP_ERROR_BUS_INVALID;
 	}
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 	if (retval == CONTROLVM_RESP_SUCCESS) {
 		/* the msg is bound for virtpci; send
 		 * guest_msgs struct to callback
 		 */
-		if (!uuid_le_cmp(dev->channel_uuid,
-				 spar_vhba_channel_protocol_uuid)) {
+		if (uuid_le_cmp(dev->channel_uuid,
+				spar_vhba_channel_protocol_uuid) == 0) {
 			cmd.msgtype = GUEST_DEL_VHBA;
 			cmd.del_vhba.chanptr = dev->chanptr;
-		} else if (!uuid_le_cmp(dev->channel_uuid,
-					spar_vnic_channel_protocol_uuid)) {
+		} else if (uuid_le_cmp(dev->channel_uuid,
+				       spar_vnic_channel_protocol_uuid) == 0) {
 			cmd.msgtype = GUEST_DEL_VNIC;
 			cmd.del_vnic.chanptr = dev->chanptr;
 		} else {
@@ -739,7 +720,7 @@
 			    CONTROLVM_RESP_ERROR_CHANNEL_TYPE_UNKNOWN;
 		}
 		if (!virt_control_chan_func) {
-			LOGERR("CONTROLVM_DEVICE_DESTORY Failed: virtpci callback not registered.");
+			LOGERR("CONTROLVM_DEVICE_DESTROY Failed: virtpci callback not registered.");
 			return
 			    CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
 		}
@@ -755,7 +736,7 @@
  */
 		if (dev->polling) {
 			LOGINF("calling uislib_disable_channel_interrupts");
-			uislib_disable_channel_interrupts(busNo, devNo);
+			uislib_disable_channel_interrupts(bus_no, dev_no);
 		}
 		/* unmap the channel memory for the device. */
 		if (!msg->hdr.flags.test_message) {
@@ -763,7 +744,7 @@
 			uislib_iounmap(dev->chanptr);
 		}
 		kfree(dev);
-		bus->device[devNo] = NULL;
+		bus->device[dev_no] = NULL;
 	}
 	return retval;
 }
@@ -773,9 +754,9 @@
 {
 	POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC, POSTCODE_SEVERITY_INFO);
 
-	MaxBusCount = msg->cmd.init_chipset.bus_count;
-	PlatformNumber = msg->cmd.init_chipset.platform_number;
-	PhysicalDataChan = 0;
+	max_bus_count = msg->cmd.init_chipset.bus_count;
+	platform_no = msg->cmd.init_chipset.platform_number;
+	phys_data_chan = 0;
 
 	/* We need to make sure we have our functions registered
 	* before processing messages.  If we are a test vehicle the
@@ -793,31 +774,29 @@
 	return CONTROLVM_RESP_SUCCESS;
 }
 
-static int
-delete_bus_glue(u32 busNo)
+static int delete_bus_glue(u32 bus_no)
 {
 	struct controlvm_message msg;
 
 	init_msg_header(&msg, CONTROLVM_BUS_DESTROY, 0, 0);
-	msg.cmd.destroy_bus.bus_no = busNo;
+	msg.cmd.destroy_bus.bus_no = bus_no;
 	if (destroy_bus(&msg, NULL) != CONTROLVM_RESP_SUCCESS) {
-		LOGERR("destroy_bus failed. busNo=0x%x\n", busNo);
+		LOGERR("destroy_bus failed. bus_no=0x%x\n", bus_no);
 		return 0;
 	}
 	return 1;
 }
 
-static int
-delete_device_glue(u32 busNo, u32 devNo)
+static int delete_device_glue(u32 bus_no, u32 dev_no)
 {
 	struct controlvm_message msg;
 
 	init_msg_header(&msg, CONTROLVM_DEVICE_DESTROY, 0, 0);
-	msg.cmd.destroy_device.bus_no = busNo;
-	msg.cmd.destroy_device.dev_no = devNo;
+	msg.cmd.destroy_device.bus_no = bus_no;
+	msg.cmd.destroy_device.dev_no = dev_no;
 	if (destroy_device(&msg, NULL) != CONTROLVM_RESP_SUCCESS) {
-		LOGERR("destroy_device failed. busNo=0x%x devNo=0x%x\n", busNo,
-		       devNo);
+		LOGERR("destroy_device failed. bus_no=0x%x dev_no=0x%x\n",
+		       bus_no, dev_no);
 		return 0;
 	}
 	return 1;
@@ -874,7 +853,6 @@
 }
 EXPORT_SYMBOL_GPL(uislib_client_inject_add_bus);
 
-
 int
 uislib_client_inject_del_bus(u32 bus_no)
 {
@@ -919,7 +897,6 @@
 		return rc;
 	}
 	return 0;
-
 }
 EXPORT_SYMBOL_GPL(uislib_client_inject_resume_vhba);
 
@@ -956,7 +933,7 @@
 	msg.cmd.create_device.channel_addr = phys_chan_addr;
 	if (chan_bytes < MIN_IO_CHANNEL_SIZE) {
 		LOGERR("wrong channel size.chan_bytes = 0x%x IO_CHANNEL_SIZE= 0x%x\n",
-		     chan_bytes, (unsigned int) MIN_IO_CHANNEL_SIZE);
+		       chan_bytes, (unsigned int)MIN_IO_CHANNEL_SIZE);
 		POSTCODE_LINUX_4(VHBA_CREATE_FAILURE_PC, chan_bytes,
 				 MIN_IO_CHANNEL_SIZE, POSTCODE_SEVERITY_ERR);
 		return 0;
@@ -1015,7 +992,7 @@
 	msg.cmd.create_device.channel_addr = phys_chan_addr;
 	if (chan_bytes < MIN_IO_CHANNEL_SIZE) {
 		LOGERR("wrong channel size.chan_bytes = 0x%x IO_CHANNEL_SIZE= 0x%x\n",
-		     chan_bytes, (unsigned int) MIN_IO_CHANNEL_SIZE);
+		       chan_bytes, (unsigned int)MIN_IO_CHANNEL_SIZE);
 		POSTCODE_LINUX_4(VNIC_CREATE_FAILURE_PC, chan_bytes,
 				 MIN_IO_CHANNEL_SIZE, POSTCODE_SEVERITY_ERR);
 		return 0;
@@ -1072,7 +1049,6 @@
 		return -1;
 	}
 	return 0;
-
 }
 EXPORT_SYMBOL_GPL(uislib_client_inject_resume_vnic);
 
@@ -1129,14 +1105,12 @@
 	if (PLINE("\nBuses:\n") < 0)
 		goto err_done;
 
-	read_lock(&BusListLock);
-	for (bus = BusListHead; bus; bus = bus->next) {
-
+	read_lock(&bus_list_lock);
+	for (bus = bus_list; bus; bus = bus->next) {
 		if (PLINE("    bus=0x%p, busNo=%d, deviceCount=%d\n",
 			  bus, bus->bus_no, bus->device_count) < 0)
 			goto err_done_unlock;
 
-
 		if (PLINE("        Devices:\n") < 0)
 			goto err_done_unlock;
 
@@ -1156,7 +1130,7 @@
 			}
 		}
 	}
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 
 	if (PLINE("UisUtils_Registered_Services: %d\n",
 		  atomic_read(&uisutils_registered_services)) < 0)
@@ -1175,70 +1149,68 @@
 	return tot;
 
 err_done_unlock:
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 err_done:
 	return -1;
 }
 
-static ssize_t
-info_debugfs_read(struct file *file, char __user *buf,
-		size_t len, loff_t *offset)
+static ssize_t info_debugfs_read(struct file *file, char __user *buf,
+				 size_t len, loff_t *offset)
 {
 	char *temp;
-	int totalBytes = 0;
+	int total_bytes = 0;
 	int remaining_bytes = PROC_READ_BUFFER_SIZE;
 
 /* *start = buf; */
-	if (ProcReadBuffer == NULL) {
-		DBGINF("ProcReadBuffer == NULL; allocating buffer.\n.");
-		ProcReadBuffer = vmalloc(PROC_READ_BUFFER_SIZE);
+	if (debug_buf == NULL) {
+		DBGINF("debug_buf == NULL; allocating buffer.\n.");
+		debug_buf = vmalloc(PROC_READ_BUFFER_SIZE);
 
-		if (ProcReadBuffer == NULL) {
+		if (debug_buf == NULL) {
 			LOGERR("failed to allocate buffer to provide proc data.\n");
 			return -ENOMEM;
 		}
 	}
 
-	temp = ProcReadBuffer;
+	temp = debug_buf;
 
-	if ((*offset == 0) || (!ProcReadBufferValid)) {
+	if ((*offset == 0) || (!debug_buf_valid)) {
 		DBGINF("calling info_debugfs_read_helper.\n");
 		/* if the read fails, then -1 will be returned */
-		totalBytes = info_debugfs_read_helper(&temp, &remaining_bytes);
-		ProcReadBufferValid = 1;
-	} else
-		totalBytes = strlen(ProcReadBuffer);
+		total_bytes = info_debugfs_read_helper(&temp, &remaining_bytes);
+		debug_buf_valid = 1;
+	} else {
+		total_bytes = strlen(debug_buf);
+	}
 
 	return simple_read_from_buffer(buf, len, offset,
-				       ProcReadBuffer, totalBytes);
+				       debug_buf, total_bytes);
 }
 
-static struct device_info *
-find_dev(u32 busNo, u32 devNo)
+static struct device_info *find_dev(u32 bus_no, u32 dev_no)
 {
 	struct bus_info *bus;
 	struct device_info *dev = NULL;
 
-	read_lock(&BusListLock);
-	for (bus = BusListHead; bus; bus = bus->next) {
-		if (bus->bus_no == busNo) {
+	read_lock(&bus_list_lock);
+	for (bus = bus_list; bus; bus = bus->next) {
+		if (bus->bus_no == bus_no) {
 			/* make sure the device number is valid */
-			if (devNo >= bus->device_count) {
-				LOGERR("%s bad busNo, devNo=%d,%d",
+			if (dev_no >= bus->device_count) {
+				LOGERR("%s bad bus_no, dev_no=%d,%d",
 				       __func__,
-				       (int) (busNo), (int) (devNo));
-				goto Away;
+				       (int)bus_no, (int)dev_no);
+				break;
 			}
-			dev = bus->device[devNo];
+			dev = bus->device[dev_no];
 			if (!dev)
-				LOGERR("%s bad busNo, devNo=%d,%d",
+				LOGERR("%s bad bus_no, dev_no=%d,%d",
 				       __func__,
-				       (int) (busNo), (int) (devNo));
-			goto Away;
+				       (int)bus_no, (int)dev_no);
+			break;
 		}
 	}
-Away:
-	read_unlock(&BusListLock);
+	read_unlock(&bus_list_lock);
 	return dev;
 }
 
@@ -1262,8 +1234,7 @@
  *    less-busy ones.
  *
  */
-static int
-Process_Incoming(void *v)
+static int process_incoming(void *v)
 {
 	unsigned long long cur_cycles, old_cycles, idle_cycles, delta_cycles;
 	struct list_head *new_tail = NULL;
@@ -1272,7 +1243,7 @@
 	UIS_DAEMONIZE("dev_incoming");
 	for (i = 0; i < 16; i++) {
 		old_cycles = get_cycles();
-		wait_event_timeout(Wakeup_Polling_Device_Channels,
+		wait_event_timeout(poll_dev_wake_q,
 				   0, POLLJIFFIES_NORMAL);
 		cur_cycles = get_cycles();
 		if (wait_cycles == 0) {
@@ -1285,15 +1256,15 @@
 	LOGINF("wait_cycles=%llu", wait_cycles);
 	cycles_before_wait = wait_cycles;
 	idle_cycles = 0;
-	Go_Polling_Device_Channels = 0;
+	poll_dev_start = 0;
 	while (1) {
 		struct list_head *lelt, *tmp;
 		struct device_info *dev = NULL;
 
 		/* poll each channel for input */
-		down(&Lock_Polling_Device_Channels);
+		down(&poll_dev_lock);
 		new_tail = NULL;
-		list_for_each_safe(lelt, tmp, &List_Polling_Device_Channels) {
+		list_for_each_safe(lelt, tmp, &poll_dev_chan) {
 			int rc = 0;
 
 			dev = list_entry(lelt, struct device_info,
@@ -1315,22 +1286,22 @@
 					if (!
 					    (list_is_last
 					     (lelt,
-					      &List_Polling_Device_Channels))) {
+					      &poll_dev_chan))) {
 						new_tail = lelt;
 						dev->moved_to_tail_cnt++;
-					} else
+					} else {
 						dev->last_on_list_cnt++;
+					}
 				}
-
 			}
-			if (Incoming_ThreadInfo.should_stop)
+			if (incoming_ti.should_stop)
 				break;
 		}
 		if (new_tail != NULL) {
 			tot_moved_to_tail_cnt++;
-			list_move_tail(new_tail, &List_Polling_Device_Channels);
+			list_move_tail(new_tail, &poll_dev_chan);
 		}
-		up(&Lock_Polling_Device_Channels);
+		up(&poll_dev_lock);
 		cur_cycles = get_cycles();
 		delta_cycles = cur_cycles - old_cycles;
 		old_cycles = cur_cycles;
@@ -1340,24 +1311,24 @@
 		* - there is no input waiting on any of the channels
 		* - we have received a signal to stop this thread
 		*/
-		if (Incoming_ThreadInfo.should_stop)
+		if (incoming_ti.should_stop)
 			break;
 		if (en_smart_wakeup == 0xFF) {
 			LOGINF("en_smart_wakeup set to 0xff, to force exiting process_incoming");
 			break;
 		}
 		/* wait for POLLJIFFIES_NORMAL jiffies, or until
-		* someone wakes up Wakeup_Polling_Device_Channels,
+		* someone wakes up poll_dev_wake_q,
 		* whichever comes first only do a wait when we have
 		* been idle for cycles_before_wait cycles.
 		*/
 		if (idle_cycles > cycles_before_wait) {
-			Go_Polling_Device_Channels = 0;
+			poll_dev_start = 0;
 			tot_wait_cnt++;
-			wait_event_timeout(Wakeup_Polling_Device_Channels,
-					   Go_Polling_Device_Channels,
+			wait_event_timeout(poll_dev_wake_q,
+					   poll_dev_start,
 					   POLLJIFFIES_NORMAL);
-			Go_Polling_Device_Channels = 1;
+			poll_dev_start = 1;
 		} else {
 			tot_schedule_cnt++;
 			schedule();
@@ -1365,25 +1336,25 @@
 		}
 	}
 	DBGINF("exiting.\n");
-	complete_and_exit(&Incoming_ThreadInfo.has_stopped, 0);
+	complete_and_exit(&incoming_ti.has_stopped, 0);
 }
 
 static BOOL
-Initialize_incoming_thread(void)
+initialize_incoming_thread(void)
 {
-	if (Incoming_Thread_Started)
+	if (incoming_started)
 		return TRUE;
-	if (!uisthread_start(&Incoming_ThreadInfo,
-			     &Process_Incoming, NULL, "dev_incoming")) {
-		LOGERR("uisthread_start Initialize_incoming_thread ****FAILED");
+	if (!uisthread_start(&incoming_ti,
+			     &process_incoming, NULL, "dev_incoming")) {
+		LOGERR("uisthread_start initialize_incoming_thread ****FAILED");
 		return FALSE;
 	}
-	Incoming_Thread_Started = TRUE;
+	incoming_started = TRUE;
 	return TRUE;
 }
 
 /*  Add a new device/channel to the list being processed by
- *  Process_Incoming().
+ *  process_incoming().
  *  <interrupt> - indicates the function to call periodically.
  *  <interrupt_context> - indicates the data to pass to the <interrupt>
  *                        function.
@@ -1397,23 +1368,23 @@
 
 	dev = find_dev(bus_no, dev_no);
 	if (!dev) {
-		LOGERR("%s busNo=%d, devNo=%d", __func__, (int) (bus_no),
-		       (int) (dev_no));
+		LOGERR("%s busNo=%d, devNo=%d", __func__, (int)(bus_no),
+		       (int)(dev_no));
 		return;
 	}
-	down(&Lock_Polling_Device_Channels);
-	Initialize_incoming_thread();
+	down(&poll_dev_lock);
+	initialize_incoming_thread();
 	dev->interrupt = interrupt;
 	dev->interrupt_context = interrupt_context;
 	dev->polling = TRUE;
-	list_add_tail(&(dev->list_polling_device_channels),
-		      &List_Polling_Device_Channels);
-	up(&Lock_Polling_Device_Channels);
+	list_add_tail(&dev->list_polling_device_channels,
+		      &poll_dev_chan);
+	up(&poll_dev_lock);
 }
 EXPORT_SYMBOL_GPL(uislib_enable_channel_interrupts);
 
 /*  Remove a device/channel from the list being processed by
- *  Process_Incoming().
+ *  process_incoming().
  */
 void
 uislib_disable_channel_interrupts(u32 bus_no, u32 dev_no)
@@ -1422,31 +1393,31 @@
 
 	dev = find_dev(bus_no, dev_no);
 	if (!dev) {
-		LOGERR("%s busNo=%d, devNo=%d", __func__, (int) (bus_no),
-		       (int) (dev_no));
+		LOGERR("%s busNo=%d, devNo=%d", __func__, (int)(bus_no),
+		       (int)(dev_no));
 		return;
 	}
-	down(&Lock_Polling_Device_Channels);
+	down(&poll_dev_lock);
 	list_del(&dev->list_polling_device_channels);
 	dev->polling = FALSE;
 	dev->interrupt = NULL;
-	up(&Lock_Polling_Device_Channels);
+	up(&poll_dev_lock);
 }
 EXPORT_SYMBOL_GPL(uislib_disable_channel_interrupts);
 
 static void
 do_wakeup_polling_device_channels(struct work_struct *dummy)
 {
-	if (!Go_Polling_Device_Channels) {
-		Go_Polling_Device_Channels = 1;
-		wake_up(&Wakeup_Polling_Device_Channels);
+	if (!poll_dev_start) {
+		poll_dev_start = 1;
+		wake_up(&poll_dev_wake_q);
 	}
 }
 
-static DECLARE_WORK(Work_wakeup_polling_device_channels,
+static DECLARE_WORK(work_wakeup_polling_device_channels,
 		    do_wakeup_polling_device_channels);
 
-/*  Call this function when you want to send a hint to Process_Incoming() that
+/*  Call this function when you want to send a hint to process_incoming() that
  *  your device might have more requests.
  */
 void
@@ -1454,14 +1425,14 @@
 {
 	if (en_smart_wakeup == 0)
 		return;
-	if (Go_Polling_Device_Channels)
+	if (poll_dev_start)
 		return;
 	/* The point of using schedule_work() instead of just doing
 	 * the work inline is to force a slight delay before waking up
-	 * the Process_Incoming() thread.
+	 * the process_incoming() thread.
 	 */
 	tot_wakeup_cnt++;
-	schedule_work(&Work_wakeup_polling_device_channels);
+	schedule_work(&work_wakeup_polling_device_channels);
 }
 EXPORT_SYMBOL_GPL(uislib_force_channel_interrupt);
 
@@ -1472,35 +1443,35 @@
 static int __init
 uislib_mod_init(void)
 {
-
 	if (!unisys_spar_platform)
 		return -ENODEV;
 
 	LOGINF("MONITORAPIS");
 
 	LOGINF("sizeof(struct uiscmdrsp):%lu bytes\n",
-	       (ulong) sizeof(struct uiscmdrsp));
+	       (ulong)sizeof(struct uiscmdrsp));
 	LOGINF("sizeof(struct phys_info):%lu\n",
-	       (ulong) sizeof(struct phys_info));
+	       (ulong)sizeof(struct phys_info));
 	LOGINF("sizeof(uiscmdrsp_scsi):%lu\n",
-	       (ulong) sizeof(struct uiscmdrsp_scsi));
+	       (ulong)sizeof(struct uiscmdrsp_scsi));
 	LOGINF("sizeof(uiscmdrsp_net):%lu\n",
-	       (ulong) sizeof(struct uiscmdrsp_net));
+	       (ulong)sizeof(struct uiscmdrsp_net));
 	LOGINF("sizeof(CONTROLVM_MESSAGE):%lu bytes\n",
-	       (ulong) sizeof(struct controlvm_message));
+	       (ulong)sizeof(struct controlvm_message));
 	LOGINF("sizeof(struct spar_controlvm_channel_protocol):%lu bytes\n",
-	       (ulong) sizeof(struct spar_controlvm_channel_protocol));
+	       (ulong)sizeof(struct spar_controlvm_channel_protocol));
 	LOGINF("sizeof(CHANNEL_HEADER):%lu bytes\n",
-	       (ulong) sizeof(struct channel_header));
+	       (ulong)sizeof(struct channel_header));
 	LOGINF("sizeof(struct spar_io_channel_protocol):%lu bytes\n",
-	       (ulong) sizeof(struct spar_io_channel_protocol));
+	       (ulong)sizeof(struct spar_io_channel_protocol));
 	LOGINF("SIZEOF_CMDRSP:%lu bytes\n", SIZEOF_CMDRSP);
 	LOGINF("SIZEOF_PROTOCOL:%lu bytes\n", SIZEOF_PROTOCOL);
 
 	/* initialize global pointers to NULL */
-	BusListHead = NULL;
-	BusListCount = MaxBusCount = 0;
-	rwlock_init(&BusListLock);
+	bus_list = NULL;
+	bus_list_count = 0;
+	max_bus_count = 0;
+	rwlock_init(&bus_list_lock);
 	virt_control_chan_func = NULL;
 
 	/* Issue VMCALL_GET_CONTROLVM_ADDR to get CtrlChanPhysAddr and
@@ -1515,7 +1486,7 @@
 
 		platformnumber_debugfs_read = debugfs_create_u32(
 			PLATFORMNUMBER_DEBUGFS_ENTRY_FN, 0444, dir_debugfs,
-			&PlatformNumber);
+			&platform_no);
 
 		cycles_before_wait_debugfs_read = debugfs_create_u64(
 			CYCLES_BEFORE_WAIT_DEBUGFS_ENTRY_FN, 0666, dir_debugfs,
@@ -1533,9 +1504,9 @@
 static void __exit
 uislib_mod_exit(void)
 {
-	if (ProcReadBuffer) {
-		vfree(ProcReadBuffer);
-		ProcReadBuffer = NULL;
+	if (debug_buf) {
+		vfree(debug_buf);
+		debug_buf = NULL;
 	}
 
 	debugfs_remove(info_debugfs_entry);
diff --git a/drivers/staging/unisys/uislib/uisqueue.c b/drivers/staging/unisys/uislib/uisqueue.c
index f9f8442..71bb7b6 100644
--- a/drivers/staging/unisys/uislib/uisqueue.c
+++ b/drivers/staging/unisys/uislib/uisqueue.c
@@ -21,8 +21,6 @@
 
 #include "uisutils.h"
 
-#include "chanstub.h"
-
 /* this is shorter than using __FILE__ (full path name) in
  * debug/info/error messages */
 #define CURRENT_FILE_PC UISLIB_PC_uisqueue_c
@@ -33,9 +31,202 @@
 /*****************************************************/
 /* Exported functions                                */
 /*****************************************************/
+
+/*
+ * Routine Description:
+ * Tries to insert the prebuilt signal pointed to by pSignal into the nth
+ * Queue of the Channel pointed to by pChannel
+ *
+ * Parameters:
+ * pChannel: (IN) points to the IO Channel
+ * Queue: (IN) nth Queue of the IO Channel
+ * pSignal: (IN) pointer to the signal
+ *
+ * Assumptions:
+ * - pChannel, Queue and pSignal are valid.
+ * - If insertion fails due to a full queue, the caller will determine the
+ * retry policy (e.g. wait & try again, report an error, etc.).
+ *
+ * Return value:
+ * 1 if the insertion succeeds, 0 if the queue was full.
+ */
+unsigned char spar_signal_insert(struct channel_header __iomem *ch, u32 queue,
+				 void *sig)
+{
+	void __iomem *psignal;
+	unsigned int head, tail, nof;
+
+	struct signal_queue_header __iomem *pqhdr =
+	    (struct signal_queue_header __iomem *)
+		((char __iomem *)ch + readq(&ch->ch_space_offset))
+		+ queue;
+
+	/* capture current head and tail */
+	head = readl(&pqhdr->head);
+	tail = readl(&pqhdr->tail);
+
+	/* queue is full if (head + 1) % n equals tail */
+	if (((head + 1) % readl(&pqhdr->max_slots)) == tail) {
+		nof = readq(&pqhdr->num_overflows) + 1;
+		writeq(nof, &pqhdr->num_overflows);
+		return 0;
+	}
+
+	/* increment the head index */
+	head = (head + 1) % readl(&pqhdr->max_slots);
+
+	/* copy signal to the head location from the area pointed to
+	 * by pSignal
+	 */
+	psignal = (char __iomem *)pqhdr + readq(&pqhdr->sig_base_offset) +
+		(head * readl(&pqhdr->signal_size));
+	memcpy_toio(psignal, sig, readl(&pqhdr->signal_size));
+
+	mb(); /* channel synch */
+	writel(head, &pqhdr->head);
+
+	writeq(readq(&pqhdr->num_sent) + 1, &pqhdr->num_sent);
+	return 1;
+}
+EXPORT_SYMBOL_GPL(spar_signal_insert);
+
+/*
+ * Routine Description:
+ * Removes one signal from Channel pChannel's nth Queue at the
+ * time of the call and copies it into the memory pointed to by
+ * pSignal.
+ *
+ * Parameters:
+ * pChannel: (IN) points to the IO Channel
+ * Queue: (IN) nth Queue of the IO Channel
+ * pSignal: (IN) pointer to where the signals are to be copied
+ *
+ * Assumptions:
+ * - pChannel and Queue are valid.
+ * - pSignal points to a memory area large enough to hold queue's SignalSize
+ *
+ * Return value:
+ * 1 if the removal succeeds, 0 if the queue was empty.
+ */
+unsigned char
+spar_signal_remove(struct channel_header __iomem *ch, u32 queue, void *sig)
+{
+	void __iomem *psource;
+	unsigned int head, tail;
+	struct signal_queue_header __iomem *pqhdr =
+	    (struct signal_queue_header __iomem *)((char __iomem *)ch +
+				    readq(&ch->ch_space_offset)) + queue;
+
+	/* capture current head and tail */
+	head = readl(&pqhdr->head);
+	tail = readl(&pqhdr->tail);
+
+	/* queue is empty if the head index equals the tail index */
+	if (head == tail) {
+		writeq(readq(&pqhdr->num_empty) + 1, &pqhdr->num_empty);
+		return 0;
+	}
+
+	/* advance past the 'empty' front slot */
+	tail = (tail + 1) % readl(&pqhdr->max_slots);
+
+	/* copy signal from tail location to the area pointed to by pSignal */
+	psource = (char __iomem *)pqhdr + readq(&pqhdr->sig_base_offset) +
+		(tail * readl(&pqhdr->signal_size));
+	memcpy_fromio(sig, psource, readl(&pqhdr->signal_size));
+
+	mb(); /* channel synch */
+	writel(tail, &pqhdr->tail);
+
+	writeq(readq(&pqhdr->num_received) + 1,
+	       &pqhdr->num_received);
+	return 1;
+}
+EXPORT_SYMBOL_GPL(spar_signal_remove);
+
+/*
+ * Routine Description:
+ * Removes all signals present in Channel pChannel's nth Queue at the
+ * time of the call and copies them into the memory pointed to by
+ * pSignal.  Returns the # of signals copied as the value of the routine.
+ *
+ * Parameters:
+ * pChannel: (IN) points to the IO Channel
+ * Queue: (IN) nth Queue of the IO Channel
+ * pSignal: (IN) pointer to where the signals are to be copied
+ *
+ * Assumptions:
+ * - pChannel and Queue are valid.
+ * - pSignal points to a memory area large enough to hold Queue's MaxSignals
+ * # of signals, each of which is Queue's SignalSize.
+ *
+ * Return value:
+ * # of signals copied.
+ */
+unsigned int spar_signal_remove_all(struct channel_header *ch, u32 queue,
+				    void *sig)
+{
+	void *psource;
+	unsigned int head, tail, count = 0;
+	struct signal_queue_header *pqhdr =
+	    (struct signal_queue_header *)((char *)ch +
+				    ch->ch_space_offset) + queue;
+
+	/* capture current head and tail */
+	head = pqhdr->head;
+	tail = pqhdr->tail;
+
+	/* queue is empty if the head index equals the tail index */
+	if (head == tail)
+		return 0;
+
+	while (head != tail) {
+		/* advance past the 'empty' front slot */
+		tail = (tail + 1) % pqhdr->max_slots;
+
+		/* copy signal from tail location to the area pointed
+		 * to by pSignal
+		 */
+		psource =
+		    (char *)pqhdr + pqhdr->sig_base_offset +
+		    (tail * pqhdr->signal_size);
+		memcpy((char *)sig + (pqhdr->signal_size * count),
+		       psource, pqhdr->signal_size);
+
+		mb(); /* channel synch */
+		pqhdr->tail = tail;
+
+		count++;
+		pqhdr->num_received++;
+	}
+
+	return count;
+}
+
+/*
+ * Routine Description:
+ * Determine whether a signal queue is empty.
+ *
+ * Parameters:
+ * pChannel: (IN) points to the IO Channel
+ * Queue: (IN) nth Queue of the IO Channel
+ *
+ * Return value:
+ * 1 if the signal queue is empty, 0 otherwise.
+ */
+unsigned char spar_signalqueue_empty(struct channel_header __iomem *ch,
+				     u32 queue)
+{
+	struct signal_queue_header __iomem *pqhdr =
+	    (struct signal_queue_header __iomem *)((char __iomem *)ch +
+				    readq(&ch->ch_space_offset)) + queue;
+	return readl(&pqhdr->head) == readl(&pqhdr->tail);
+}
+EXPORT_SYMBOL_GPL(spar_signalqueue_empty);
+
 unsigned long long
 uisqueue_interlocked_or(unsigned long long __iomem *tgt,
-		       unsigned long long set)
+			unsigned long long set)
 {
 	unsigned long long i;
 	unsigned long long j;
@@ -53,7 +244,7 @@
 
 unsigned long long
 uisqueue_interlocked_and(unsigned long long __iomem *tgt,
-			unsigned long long set)
+			 unsigned long long set)
 {
 	unsigned long long i;
 	unsigned long long j;
@@ -72,22 +263,21 @@
 static u8
 do_locked_client_insert(struct uisqueue_info *queueinfo,
 			unsigned int whichqueue,
-			void *pSignal,
+			void *signal,
 			spinlock_t *lock,
-			unsigned char issueInterruptIfEmpty,
-			u64 interruptHandle, u8 *channelId)
+			u8 *channel_id)
 {
 	unsigned long flags;
 	u8 rc = 0;
 
 	spin_lock_irqsave(lock, flags);
-	if (!spar_channel_client_acquire_os(queueinfo->chan, channelId))
+	if (!spar_channel_client_acquire_os(queueinfo->chan, channel_id))
 		goto unlock;
-	if (spar_signal_insert(queueinfo->chan, whichqueue, pSignal)) {
+	if (spar_signal_insert(queueinfo->chan, whichqueue, signal)) {
 		queueinfo->packets_sent++;
 		rc = 1;
 	}
-	spar_channel_client_release_os(queueinfo->chan, channelId);
+	spar_channel_client_release_os(queueinfo->chan, channel_id);
 unlock:
 	spin_unlock_irqrestore((spinlock_t *)lock, flags);
 	return rc;
@@ -103,9 +293,8 @@
 				     char oktowait, u8 *channel_id)
 {
 	while (!do_locked_client_insert(queueinfo, whichqueue, cmdrsp,
-					(spinlock_t *) insertlock,
-					issue_irq_if_empty,
-					irq_handle, channel_id)) {
+					(spinlock_t *)insertlock,
+					channel_id)) {
 		if (oktowait != OK_TO_WAIT) {
 			LOGERR("****FAILED visor_signal_insert failed; cannot wait; insert aborted\n");
 			return 0;	/* failed to queue */
diff --git a/drivers/staging/unisys/uislib/uisthread.c b/drivers/staging/unisys/uislib/uisthread.c
index c0fc812..25adf1a 100644
--- a/drivers/staging/unisys/uislib/uisthread.c
+++ b/drivers/staging/unisys/uislib/uisthread.c
@@ -53,7 +53,6 @@
 	wake_up_process(thrinfo->task);
 	LOGINF("started thread pid:%d\n", thrinfo->id);
 	return 1;
-
 }
 EXPORT_SYMBOL_GPL(uisthread_start);
 
diff --git a/drivers/staging/unisys/uislib/uisutils.c b/drivers/staging/unisys/uislib/uisutils.c
index 4a5b867..31318d2 100644
--- a/drivers/staging/unisys/uislib/uisutils.c
+++ b/drivers/staging/unisys/uislib/uisutils.c
@@ -42,14 +42,13 @@
 					 * uisctrl_register_req_handler() or
 					 * uisctrl_register_req_handler_ex() */
 
-
 /*****************************************************/
 /* Utility functions                                 */
 /*****************************************************/
 
 int
 uisutil_add_proc_line_ex(int *total, char **buffer, int *buffer_remaining,
-		      char *format, ...)
+			 char *format, ...)
 {
 	va_list args;
 	int len;
@@ -57,6 +56,7 @@
 	DBGINF("buffer = 0x%p : *buffer = 0x%p.\n", buffer, *buffer);
 	va_start(args, format);
 	len = vsnprintf(*buffer, *buffer_remaining, format, args);
+	va_end(args);
 	if (len >= *buffer_remaining) {
 		*buffer += *buffer_remaining;
 		*total += *buffer_remaining;
@@ -96,7 +96,7 @@
 	}
 	if (chipset_driver_info)
 		bus_device_info_init(chipset_driver_info, "chipset", "uislib",
-				   VERSION, NULL);
+				     VERSION, NULL);
 
 	return 1;
 }
@@ -113,66 +113,57 @@
 						u32 client_str_len, u64 bytes),
 			struct ultra_vbus_deviceinfo *chipset_driver_info)
 {
-	struct req_handler_info *pReqHandlerInfo;
-	int rc = 0;		/* assume failure */
+	struct req_handler_info *req_handler;
 
 	LOGINF("type=%pUL, controlfunc=0x%p.\n",
 	       &switch_uuid, controlfunc);
 	if (!controlfunc) {
 		LOGERR("%pUL: controlfunc must be supplied\n", &switch_uuid);
-		goto Away;
+		return 0;
 	}
 	if (!server_channel_ok) {
 		LOGERR("%pUL: Server_Channel_Ok must be supplied\n",
 				&switch_uuid);
-		goto Away;
+		return 0;
 	}
 	if (!server_channel_init) {
 		LOGERR("%pUL: Server_Channel_Init must be supplied\n",
 				&switch_uuid);
-		goto Away;
+		return 0;
 	}
-	pReqHandlerInfo = req_handler_add(switch_uuid,
-					switch_type_name,
-					controlfunc,
-					min_channel_bytes,
-					server_channel_ok, server_channel_init);
-	if (!pReqHandlerInfo) {
+	req_handler = req_handler_add(switch_uuid,
+				      switch_type_name,
+				      controlfunc,
+				      min_channel_bytes,
+				      server_channel_ok, server_channel_init);
+	if (!req_handler) {
 		LOGERR("failed to add %pUL to server list\n", &switch_uuid);
-		goto Away;
+		return 0;
 	}
 
 	atomic_inc(&uisutils_registered_services);
-	rc = 1;			/* success */
-Away:
-	if (rc) {
-		if (chipset_driver_info)
-			bus_device_info_init(chipset_driver_info, "chipset",
-					   "uislib", VERSION, NULL);
-	} else
-		LOGERR("failed to register type %pUL.\n", &switch_uuid);
+	if (chipset_driver_info) {
+		bus_device_info_init(chipset_driver_info, "chipset",
+				     "uislib", VERSION, NULL);
+		return 1;
+	}
 
-	return rc;
+	LOGERR("failed to register type %pUL.\n", &switch_uuid);
+	return 0;
 }
 EXPORT_SYMBOL_GPL(uisctrl_register_req_handler_ex);
 
 int
 uisctrl_unregister_req_handler_ex(uuid_le switch_uuid)
 {
-	int rc = 0;		/* assume failure */
-
 	LOGINF("type=%pUL.\n", &switch_uuid);
 	if (req_handler_del(switch_uuid) < 0) {
 		LOGERR("failed to remove %pUL from server list\n",
-				&switch_uuid);
-		goto Away;
+		       &switch_uuid);
+		return 0;
 	}
 	atomic_dec(&uisutils_registered_services);
-	rc = 1;			/* success */
-Away:
-	if (!rc)
-		LOGERR("failed to unregister type %pUL.\n", &switch_uuid);
-	return rc;
+	return 1;
 }
 EXPORT_SYMBOL_GPL(uisctrl_unregister_req_handler_ex);
 
@@ -214,10 +205,10 @@
 		frags[count].pi_pfn =
 		    page_to_pfn(virt_to_page(skb->data + offset));
 		frags[count].pi_off =
-		    (unsigned long) (skb->data + offset) & PI_PAGE_MASK;
+		    (unsigned long)(skb->data + offset) & PI_PAGE_MASK;
 		size =
 		    min(firstfraglen,
-			(unsigned int) (PI_PAGE_SIZE - frags[count].pi_off));
+			(unsigned int)(PI_PAGE_SIZE - frags[count].pi_off));
 		/* can take smallest of firstfraglen(what's left) OR
 		* bytes left in the page
 		*/
@@ -231,7 +222,7 @@
 
 	if ((count + numfrags) > frags_max) {
 		LOGERR("**** FAILED %s frags array too small: max:%d count+nr_frags:%d\n",
-		     calling_ctx, frags_max, count + numfrags);
+		       calling_ctx, frags_max, count + numfrags);
 		return -1;	/* failure */
 	}
 
@@ -255,7 +246,6 @@
 
 		for (skbinlist = skb_shinfo(skb)->frag_list; skbinlist;
 		     skbinlist = skbinlist->next) {
-
 			c = uisutil_copy_fragsinfo_from_skb("recursive",
 				skbinlist,
 				skbinlist->len - skbinlist->data_len,
@@ -272,17 +262,18 @@
 }
 EXPORT_SYMBOL_GPL(uisutil_copy_fragsinfo_from_skb);
 
-static LIST_HEAD(ReqHandlerInfo_list);	/* list of struct req_handler_info */
-static DEFINE_SPINLOCK(ReqHandlerInfo_list_lock);
+static LIST_HEAD(req_handler_info_list); /* list of struct req_handler_info */
+static DEFINE_SPINLOCK(req_handler_info_list_lock);
 
 struct req_handler_info *
 req_handler_add(uuid_le switch_uuid,
 	      const char *switch_type_name,
 	      int (*controlfunc)(struct io_msgs *),
 	      unsigned long min_channel_bytes,
-	      int (*Server_Channel_Ok)(unsigned long channelBytes),
-	      int (*Server_Channel_Init)
-	       (void *x, unsigned char *clientStr, u32 clientStrLen, u64 bytes))
+	      int (*server_channel_ok)(unsigned long channel_bytes),
+	      int (*server_channel_init)
+	       (void *x, unsigned char *clientstr, u32 clientstr_len,
+		u64 bytes))
 {
 	struct req_handler_info *rc = NULL;
 
@@ -292,14 +283,14 @@
 	rc->switch_uuid = switch_uuid;
 	rc->controlfunc = controlfunc;
 	rc->min_channel_bytes = min_channel_bytes;
-	rc->server_channel_ok = Server_Channel_Ok;
-	rc->server_channel_init = Server_Channel_Init;
+	rc->server_channel_ok = server_channel_ok;
+	rc->server_channel_init = server_channel_init;
 	if (switch_type_name)
 		strncpy(rc->switch_type_name, switch_type_name,
 			sizeof(rc->switch_type_name) - 1);
-	spin_lock(&ReqHandlerInfo_list_lock);
-	list_add_tail(&(rc->list_link), &ReqHandlerInfo_list);
-	spin_unlock(&ReqHandlerInfo_list_lock);
+	spin_lock(&req_handler_info_list_lock);
+	list_add_tail(&rc->list_link, &req_handler_info_list);
+	spin_unlock(&req_handler_info_list_lock);
 
 	return rc;
 }
@@ -310,15 +301,15 @@
 	struct list_head *lelt, *tmp;
 	struct req_handler_info *entry = NULL;
 
-	spin_lock(&ReqHandlerInfo_list_lock);
-	list_for_each_safe(lelt, tmp, &ReqHandlerInfo_list) {
+	spin_lock(&req_handler_info_list_lock);
+	list_for_each_safe(lelt, tmp, &req_handler_info_list) {
 		entry = list_entry(lelt, struct req_handler_info, list_link);
 		if (uuid_le_cmp(entry->switch_uuid, switch_uuid) == 0) {
-			spin_unlock(&ReqHandlerInfo_list_lock);
+			spin_unlock(&req_handler_info_list_lock);
 			return entry;
 		}
 	}
-	spin_unlock(&ReqHandlerInfo_list_lock);
+	spin_unlock(&req_handler_info_list_lock);
 	return NULL;
 }
 
@@ -329,8 +320,8 @@
 	struct req_handler_info *entry = NULL;
 	int rc = -1;
 
-	spin_lock(&ReqHandlerInfo_list_lock);
-	list_for_each_safe(lelt, tmp, &ReqHandlerInfo_list) {
+	spin_lock(&req_handler_info_list_lock);
+	list_for_each_safe(lelt, tmp, &req_handler_info_list) {
 		entry = list_entry(lelt, struct req_handler_info, list_link);
 		if (uuid_le_cmp(entry->switch_uuid, switch_uuid) == 0) {
 			list_del(lelt);
@@ -338,6 +329,6 @@
 			rc++;
 		}
 	}
-	spin_unlock(&ReqHandlerInfo_list_lock);
+	spin_unlock(&req_handler_info_list_lock);
 	return rc;
 }
diff --git a/drivers/staging/unisys/virthba/Kconfig b/drivers/staging/unisys/virthba/Kconfig
index c0d7986..9af98fc 100644
--- a/drivers/staging/unisys/virthba/Kconfig
+++ b/drivers/staging/unisys/virthba/Kconfig
@@ -4,7 +4,7 @@
 
 config UNISYS_VIRTHBA
 	tristate "Unisys virthba driver"
-	depends on UNISYSSPAR && UNISYS_VISORCHIPSET && UNISYS_CHANNELSTUB && UNISYS_UISLIB && UNISYS_VIRTPCI && SCSI
+	depends on UNISYSSPAR && UNISYS_VISORCHIPSET && UNISYS_UISLIB && UNISYS_VIRTPCI && SCSI
 	---help---
 	If you say Y here, you will enable the Unisys virthba driver.
 
diff --git a/drivers/staging/unisys/virthba/virthba.c b/drivers/staging/unisys/virthba/virthba.c
index d7a629b..82fcb3b 100644
--- a/drivers/staging/unisys/virthba/virthba.c
+++ b/drivers/staging/unisys/virthba/virthba.c
@@ -1438,7 +1438,7 @@
 		return -EFAULT;
 	}
 
-	i = kstrtoint(buf, 10 , &new_value);
+	i = kstrtoint(buf, 10, &new_value);
 
 	if (i != 0) {
 		LOGERR("Failed to scan value for enable_ints, buf<<%.*s>>",
diff --git a/drivers/staging/unisys/virtpci/virtpci.c b/drivers/staging/unisys/virtpci/virtpci.c
index 39b828d..8fdfd6f 100644
--- a/drivers/staging/unisys/virtpci/virtpci.c
+++ b/drivers/staging/unisys/virtpci/virtpci.c
@@ -104,8 +104,6 @@
 					 const char *buf, size_t count);
 static int virtpci_bus_match(struct device *dev, struct device_driver *drv);
 static int virtpci_uevent(struct device *dev, struct kobj_uevent_env *env);
-static int virtpci_device_suspend(struct device *dev, pm_message_t state);
-static int virtpci_device_resume(struct device *dev);
 static int virtpci_device_probe(struct device *dev);
 static int virtpci_device_remove(struct device *dev);
 
@@ -128,8 +126,6 @@
 	.name = "uisvirtpci",
 	.match = virtpci_bus_match,
 	.uevent = virtpci_uevent,
-	.suspend = virtpci_device_suspend,
-	.resume = virtpci_device_resume,
 };
 
 static struct device virtpci_rootbus_device = {
@@ -279,9 +275,9 @@
 		POSTCODE_LINUX_2(VPCI_CREATE_FAILURE_PC, POSTCODE_SEVERITY_ERR);
 		return 0;
 	}
-	write_vbus_chp_info(vbus->platform_data /* chanptr */ ,
+	write_vbus_chp_info(vbus->platform_data /* chanptr */,
 			    &chipset_driver_info);
-	write_vbus_bus_info(vbus->platform_data /* chanptr */ ,
+	write_vbus_bus_info(vbus->platform_data /* chanptr */,
 			    &bus_driver_info);
 	LOGINF("Added vbus %d; device %s created successfully\n",
 	       addparams->bus_no, BUS_ID(vbus));
@@ -466,7 +462,7 @@
 	GET_SCSIADAPINFO_FROM_CHANPTR(pauseparams->chanptr);
 
 	LOGINF("Pausing vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, scsi.wwnn.wwnn2);
-	i = virtpci_device_serverdown(NULL /*no parent bus */ , VIRTHBA_TYPE,
+	i = virtpci_device_serverdown(NULL /*no parent bus */, VIRTHBA_TYPE,
 				      &scsi.wwnn, NULL);
 	if (i)
 		LOGINF("Paused vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1,
@@ -487,7 +483,7 @@
 	LOGINF("Pausing vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
 	       net.mac_addr[0], net.mac_addr[1], net.mac_addr[2],
 	       net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]);
-	i = virtpci_device_serverdown(NULL /*no parent bus */ , VIRTNIC_TYPE,
+	i = virtpci_device_serverdown(NULL /*no parent bus */, VIRTNIC_TYPE,
 				      NULL, net.mac_addr);
 	if (i) {
 		LOGINF(" Paused vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
@@ -508,7 +504,7 @@
 	GET_SCSIADAPINFO_FROM_CHANPTR(resumeparams->chanptr);
 
 	LOGINF("Resuming vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, scsi.wwnn.wwnn2);
-	i = virtpci_device_serverup(NULL /*no parent bus */ , VIRTHBA_TYPE,
+	i = virtpci_device_serverup(NULL /*no parent bus */, VIRTHBA_TYPE,
 				    &scsi.wwnn, NULL);
 	if (i)
 		LOGINF("Resumed vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1,
@@ -530,7 +526,7 @@
 	LOGINF("Resuming vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
 	       net.mac_addr[0], net.mac_addr[1], net.mac_addr[2],
 	       net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]);
-	i = virtpci_device_serverup(NULL /*no parent bus */ , VIRTNIC_TYPE,
+	i = virtpci_device_serverup(NULL /*no parent bus */, VIRTNIC_TYPE,
 				    NULL, net.mac_addr);
 	if (i) {
 		LOGINF(" Resumed vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
@@ -551,7 +547,7 @@
 	GET_SCSIADAPINFO_FROM_CHANPTR(delparams->chanptr);
 
 	LOGINF("Deleting vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1, scsi.wwnn.wwnn2);
-	i = virtpci_device_del(NULL /*no parent bus */ , VIRTHBA_TYPE,
+	i = virtpci_device_del(NULL /*no parent bus */, VIRTHBA_TYPE,
 			       &scsi.wwnn, NULL);
 	if (i) {
 		LOGINF("Deleted vhba wwnn:%x:%x\n", scsi.wwnn.wwnn1,
@@ -574,7 +570,7 @@
 	LOGINF("Deleting vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
 	       net.mac_addr[0], net.mac_addr[1], net.mac_addr[2],
 	       net.mac_addr[3], net.mac_addr[4], net.mac_addr[5]);
-	i = virtpci_device_del(NULL /*no parent bus */ , VIRTNIC_TYPE, NULL,
+	i = virtpci_device_del(NULL /*no parent bus */, VIRTNIC_TYPE, NULL,
 			       net.mac_addr);
 	if (i) {
 		LOGINF("Deleted vnic macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
@@ -757,18 +753,6 @@
 	return 0;
 }
 
-static int virtpci_device_suspend(struct device *dev, pm_message_t state)
-{
-	DBGINF("In virtpci_device_suspend -NYI ****\n");
-	return 0;
-}
-
-static int virtpci_device_resume(struct device *dev)
-{
-	DBGINF("In virtpci_device_resume -NYI ****\n");
-	return 0;
-}
-
 /* For a child device just created on a client bus, fill in
  * information about the driver that is controlling this device into
  * the appropriate slot within the vbus channel of the bus
@@ -1338,18 +1322,13 @@
 	ssize_t ret = 0;
 
 	struct driver_private *dprivate = to_driver(kobj);
-	struct device_driver *driver;
+	struct device_driver *driver = dprivate->driver;
 
-	if (dprivate != NULL)
-		driver = dprivate->driver;
-	else
-		driver = NULL;
+	DBGINF("In virtpci_driver_attr_show driver->name:%s\n",	driver->name);
 
-	DBGINF("In virtpci_driver_attr_show driver->name:%s\n", driver->name);
-	if (driver) {
-		if (dattr->show)
-			ret = dattr->show(driver, buf);
-	}
+	if (dattr->show)
+		ret = dattr->show(driver, buf);
+
 	return ret;
 }
 
@@ -1361,19 +1340,13 @@
 	ssize_t ret = 0;
 
 	struct driver_private *dprivate = to_driver(kobj);
-	struct device_driver *driver;
-
-	if (dprivate != NULL)
-		driver = dprivate->driver;
-	else
-		driver = NULL;
+	struct device_driver *driver = dprivate->driver;
 
 	DBGINF("In virtpci_driver_attr_store driver->name:%s\n", driver->name);
 
-	if (driver) {
-		if (dattr->store)
-			ret = dattr->store(driver, buf, count);
-	}
+	if (dattr->store)
+		ret = dattr->store(driver, buf, count);
+
 	return ret;
 }
 
diff --git a/drivers/staging/unisys/visorchannel/visorchannel.h b/drivers/staging/unisys/visorchannel/visorchannel.h
index 5061edf..63f1b97 100644
--- a/drivers/staging/unisys/visorchannel/visorchannel.h
+++ b/drivers/staging/unisys/visorchannel/visorchannel.h
@@ -29,49 +29,48 @@
 #define BOOL int
 #endif
 
-/* VISORCHANNEL is an opaque structure to users.
- * Fields are declared only in the implementation .c files.
- */
-typedef struct VISORCHANNEL_Tag VISORCHANNEL;
-
 /* Note that for visorchannel_create() and visorchannel_create_overlapped(),
- * <channelBytes> and <guid> arguments may be 0 if we are a channel CLIENT.
+ * <channel_bytes> and <guid> arguments may be 0 if we are a channel CLIENT.
  * In this case, the values can simply be read from the channel header.
  */
-VISORCHANNEL *visorchannel_create(HOSTADDRESS physaddr,
-				  ulong channelBytes, uuid_le guid);
-VISORCHANNEL *visorchannel_create_overlapped(ulong channelBytes,
-					     VISORCHANNEL *parent, ulong off,
-					     uuid_le guid);
-VISORCHANNEL *visorchannel_create_with_lock(HOSTADDRESS physaddr,
-					    ulong channelBytes, uuid_le guid);
-VISORCHANNEL *visorchannel_create_overlapped_with_lock(ulong channelBytes,
-						       VISORCHANNEL *parent,
-						       ulong off, uuid_le guid);
-void visorchannel_destroy(VISORCHANNEL *channel);
-int visorchannel_read(VISORCHANNEL *channel, ulong offset,
+struct visorchannel *visorchannel_create(HOSTADDRESS physaddr,
+					 ulong channel_bytes, uuid_le guid);
+struct visorchannel *visorchannel_create_overlapped(ulong channel_bytes,
+						    struct visorchannel *parent,
+						    ulong off, uuid_le guid);
+struct visorchannel *visorchannel_create_with_lock(HOSTADDRESS physaddr,
+						   ulong channel_bytes,
+						   uuid_le guid);
+struct visorchannel *visorchannel_create_overlapped_with_lock(
+				ulong channel_bytes,
+				struct visorchannel *parent,
+				ulong off, uuid_le guid);
+void visorchannel_destroy(struct visorchannel *channel);
+int visorchannel_read(struct visorchannel *channel, ulong offset,
 		      void *local, ulong nbytes);
-int visorchannel_write(VISORCHANNEL *channel, ulong offset,
+int visorchannel_write(struct visorchannel *channel, ulong offset,
 		       void *local, ulong nbytes);
-int visorchannel_clear(VISORCHANNEL *channel, ulong offset,
+int visorchannel_clear(struct visorchannel *channel, ulong offset,
 		       u8 ch, ulong nbytes);
-BOOL visorchannel_signalremove(VISORCHANNEL *channel, u32 queue, void *msg);
-BOOL visorchannel_signalinsert(VISORCHANNEL *channel, u32 queue, void *msg);
-int visorchannel_signalqueue_slots_avail(VISORCHANNEL *channel, u32 queue);
-int visorchannel_signalqueue_max_slots(VISORCHANNEL *channel, u32 queue);
-
-HOSTADDRESS visorchannel_get_physaddr(VISORCHANNEL *channel);
-ulong visorchannel_get_nbytes(VISORCHANNEL *channel);
-char *visorchannel_id(VISORCHANNEL *channel, char *s);
-char *visorchannel_zoneid(VISORCHANNEL *channel, char *s);
-u64 visorchannel_get_clientpartition(VISORCHANNEL *channel);
-uuid_le visorchannel_get_uuid(VISORCHANNEL *channel);
-struct memregion *visorchannel_get_memregion(VISORCHANNEL *channel);
+BOOL visorchannel_signalremove(struct visorchannel *channel, u32 queue,
+			       void *msg);
+BOOL visorchannel_signalinsert(struct visorchannel *channel, u32 queue,
+			       void *msg);
+int visorchannel_signalqueue_slots_avail(struct visorchannel *channel,
+					 u32 queue);
+int visorchannel_signalqueue_max_slots(struct visorchannel *channel, u32 queue);
+HOSTADDRESS visorchannel_get_physaddr(struct visorchannel *channel);
+ulong visorchannel_get_nbytes(struct visorchannel *channel);
+char *visorchannel_id(struct visorchannel *channel, char *s);
+char *visorchannel_zoneid(struct visorchannel *channel, char *s);
+u64 visorchannel_get_clientpartition(struct visorchannel *channel);
+uuid_le visorchannel_get_uuid(struct visorchannel *channel);
+struct memregion *visorchannel_get_memregion(struct visorchannel *channel);
 char *visorchannel_uuid_id(uuid_le *guid, char *s);
-void visorchannel_debug(VISORCHANNEL *channel, int nQueues,
+void visorchannel_debug(struct visorchannel *channel, int num_queues,
 			struct seq_file *seq, u32 off);
-void visorchannel_dump_section(VISORCHANNEL *chan, char *s,
+void visorchannel_dump_section(struct visorchannel *chan, char *s,
 			       int off, int len, struct seq_file *seq);
-void __iomem *visorchannel_get_header(VISORCHANNEL *channel);
+void __iomem *visorchannel_get_header(struct visorchannel *channel);
 
 #endif
diff --git a/drivers/staging/unisys/visorchannel/visorchannel_funcs.c b/drivers/staging/unisys/visorchannel/visorchannel_funcs.c
index 36559d5..6c48ba1 100644
--- a/drivers/staging/unisys/visorchannel/visorchannel_funcs.c
+++ b/drivers/staging/unisys/visorchannel/visorchannel_funcs.c
@@ -28,14 +28,15 @@
 
 #define MYDRVNAME "visorchannel"
 
-struct VISORCHANNEL_Tag {
+struct visorchannel {
 	struct memregion *memregion;	/* from visor_memregion_create() */
 	struct channel_header chan_hdr;
 	uuid_le guid;
 	ulong size;
-	BOOL needs_lock;
-	spinlock_t insert_lock;
-	spinlock_t remove_lock;
+	BOOL needs_lock;	/* channel creator knows if more than one
+				 * thread will be inserting or removing */
+	spinlock_t insert_lock; /* protect head writes in chan_hdr */
+	spinlock_t remove_lock;	/* protect tail writes in chan_hdr */
 
 	struct {
 		struct signal_queue_header req_queue;
@@ -45,18 +46,18 @@
 	} safe_uis_queue;
 };
 
-/* Creates the VISORCHANNEL abstraction for a data area in memory, but does
- * NOT modify this data area.
+/* Creates the struct visorchannel abstraction for a data area in memory,
+ * but does NOT modify this data area.
  */
-static VISORCHANNEL *
-visorchannel_create_guts(HOSTADDRESS physaddr, ulong channelBytes,
-			 VISORCHANNEL *parent, ulong off, uuid_le guid,
+static struct visorchannel *
+visorchannel_create_guts(HOSTADDRESS physaddr, ulong channel_bytes,
+			 struct visorchannel *parent, ulong off, uuid_le guid,
 			 BOOL needs_lock)
 {
-	VISORCHANNEL *p = NULL;
+	struct visorchannel *p = NULL;
 	void *rc = NULL;
 
-	p = kmalloc(sizeof(VISORCHANNEL), GFP_KERNEL|__GFP_NORETRY);
+	p = kmalloc(sizeof(*p), GFP_KERNEL|__GFP_NORETRY);
 	if (p == NULL) {
 		ERRDRV("allocation failed: (status=0)\n");
 		rc = NULL;
@@ -87,18 +88,18 @@
 		rc = NULL;
 		goto cleanup;
 	}
-	if (channelBytes == 0)
+	if (channel_bytes == 0)
 		/* we had better be a CLIENT of this channel */
-		channelBytes = (ulong)p->chan_hdr.size;
+		channel_bytes = (ulong)p->chan_hdr.size;
 	if (uuid_le_cmp(guid, NULL_UUID_LE) == 0)
 		/* we had better be a CLIENT of this channel */
 		guid = p->chan_hdr.chtype;
-	if (visor_memregion_resize(p->memregion, channelBytes) < 0) {
+	if (visor_memregion_resize(p->memregion, channel_bytes) < 0) {
 		ERRDRV("visor_memregion_resize failed: (status=0)\n");
 		rc = NULL;
 		goto cleanup;
 	}
-	p->size = channelBytes;
+	p->size = channel_bytes;
 	p->guid = guid;
 
 	rc = p;
@@ -113,44 +114,45 @@
 	return rc;
 }
 
-VISORCHANNEL *
-visorchannel_create(HOSTADDRESS physaddr, ulong channelBytes, uuid_le guid)
+struct visorchannel *
+visorchannel_create(HOSTADDRESS physaddr, ulong channel_bytes, uuid_le guid)
 {
-	return visorchannel_create_guts(physaddr, channelBytes, NULL, 0, guid,
+	return visorchannel_create_guts(physaddr, channel_bytes, NULL, 0, guid,
 					FALSE);
 }
 EXPORT_SYMBOL_GPL(visorchannel_create);
 
-VISORCHANNEL *
-visorchannel_create_with_lock(HOSTADDRESS physaddr, ulong channelBytes,
+struct visorchannel *
+visorchannel_create_with_lock(HOSTADDRESS physaddr, ulong channel_bytes,
 			      uuid_le guid)
 {
-	return visorchannel_create_guts(physaddr, channelBytes, NULL, 0, guid,
+	return visorchannel_create_guts(physaddr, channel_bytes, NULL, 0, guid,
 					TRUE);
 }
 EXPORT_SYMBOL_GPL(visorchannel_create_with_lock);
 
-VISORCHANNEL *
-visorchannel_create_overlapped(ulong channelBytes,
-			       VISORCHANNEL *parent, ulong off, uuid_le guid)
+struct visorchannel *
+visorchannel_create_overlapped(ulong channel_bytes,
+			       struct visorchannel *parent, ulong off,
+			       uuid_le guid)
 {
-	return visorchannel_create_guts(0, channelBytes, parent, off, guid,
+	return visorchannel_create_guts(0, channel_bytes, parent, off, guid,
 					FALSE);
 }
 EXPORT_SYMBOL_GPL(visorchannel_create_overlapped);
 
-VISORCHANNEL *
-visorchannel_create_overlapped_with_lock(ulong channelBytes,
-					 VISORCHANNEL *parent, ulong off,
+struct visorchannel *
+visorchannel_create_overlapped_with_lock(ulong channel_bytes,
+					 struct visorchannel *parent, ulong off,
 					 uuid_le guid)
 {
-	return visorchannel_create_guts(0, channelBytes, parent, off, guid,
+	return visorchannel_create_guts(0, channel_bytes, parent, off, guid,
 					TRUE);
 }
 EXPORT_SYMBOL_GPL(visorchannel_create_overlapped_with_lock);
 
 void
-visorchannel_destroy(VISORCHANNEL *channel)
+visorchannel_destroy(struct visorchannel *channel)
 {
 	if (channel == NULL)
 		return;
@@ -163,14 +165,14 @@
 EXPORT_SYMBOL_GPL(visorchannel_destroy);
 
 HOSTADDRESS
-visorchannel_get_physaddr(VISORCHANNEL *channel)
+visorchannel_get_physaddr(struct visorchannel *channel)
 {
 	return visor_memregion_get_physaddr(channel->memregion);
 }
 EXPORT_SYMBOL_GPL(visorchannel_get_physaddr);
 
 ulong
-visorchannel_get_nbytes(VISORCHANNEL *channel)
+visorchannel_get_nbytes(struct visorchannel *channel)
 {
 	return channel->size;
 }
@@ -185,42 +187,42 @@
 EXPORT_SYMBOL_GPL(visorchannel_uuid_id);
 
 char *
-visorchannel_id(VISORCHANNEL *channel, char *s)
+visorchannel_id(struct visorchannel *channel, char *s)
 {
 	return visorchannel_uuid_id(&channel->guid, s);
 }
 EXPORT_SYMBOL_GPL(visorchannel_id);
 
 char *
-visorchannel_zoneid(VISORCHANNEL *channel, char *s)
+visorchannel_zoneid(struct visorchannel *channel, char *s)
 {
 	return visorchannel_uuid_id(&channel->chan_hdr.zone_uuid, s);
 }
 EXPORT_SYMBOL_GPL(visorchannel_zoneid);
 
 HOSTADDRESS
-visorchannel_get_clientpartition(VISORCHANNEL *channel)
+visorchannel_get_clientpartition(struct visorchannel *channel)
 {
 	return channel->chan_hdr.partition_handle;
 }
 EXPORT_SYMBOL_GPL(visorchannel_get_clientpartition);
 
 uuid_le
-visorchannel_get_uuid(VISORCHANNEL *channel)
+visorchannel_get_uuid(struct visorchannel *channel)
 {
 	return channel->guid;
 }
 EXPORT_SYMBOL_GPL(visorchannel_get_uuid);
 
 struct memregion *
-visorchannel_get_memregion(VISORCHANNEL *channel)
+visorchannel_get_memregion(struct visorchannel *channel)
 {
 	return channel->memregion;
 }
 EXPORT_SYMBOL_GPL(visorchannel_get_memregion);
 
 int
-visorchannel_read(VISORCHANNEL *channel, ulong offset,
+visorchannel_read(struct visorchannel *channel, ulong offset,
 		  void *local, ulong nbytes)
 {
 	int rc = visor_memregion_read(channel->memregion, offset,
@@ -235,7 +237,7 @@
 EXPORT_SYMBOL_GPL(visorchannel_read);
 
 int
-visorchannel_write(VISORCHANNEL *channel, ulong offset,
+visorchannel_write(struct visorchannel *channel, ulong offset,
 		   void *local, ulong nbytes)
 {
 	if (offset == 0 && nbytes >= sizeof(struct channel_header))
@@ -246,7 +248,8 @@
 EXPORT_SYMBOL_GPL(visorchannel_write);
 
 int
-visorchannel_clear(VISORCHANNEL *channel, ulong offset, u8 ch, ulong nbytes)
+visorchannel_clear(struct visorchannel *channel, ulong offset, u8 ch,
+		   ulong nbytes)
 {
 	int rc = -1;
 	int bufsize = 65536;
@@ -285,7 +288,7 @@
 EXPORT_SYMBOL_GPL(visorchannel_clear);
 
 void __iomem  *
-visorchannel_get_header(VISORCHANNEL *channel)
+visorchannel_get_header(struct visorchannel *channel)
 {
 	return (void __iomem *)&channel->chan_hdr;
 }
@@ -316,7 +319,7 @@
 			       sizeof((sig_hdr)->FIELD)) >= 0)
 
 static BOOL
-sig_read_header(VISORCHANNEL *channel, u32 queue,
+sig_read_header(struct visorchannel *channel, u32 queue,
 		struct signal_queue_header *sig_hdr)
 {
 	BOOL rc = FALSE;
@@ -344,7 +347,7 @@
 }
 
 static BOOL
-sig_do_data(VISORCHANNEL *channel, u32 queue,
+sig_do_data(struct visorchannel *channel, u32 queue,
 	    struct signal_queue_header *sig_hdr, u32 slot, void *data,
 	    BOOL is_write)
 {
@@ -373,14 +376,14 @@
 }
 
 static inline BOOL
-sig_read_data(VISORCHANNEL *channel, u32 queue,
+sig_read_data(struct visorchannel *channel, u32 queue,
 	      struct signal_queue_header *sig_hdr, u32 slot, void *data)
 {
 	return sig_do_data(channel, queue, sig_hdr, slot, data, FALSE);
 }
 
 static inline BOOL
-sig_write_data(VISORCHANNEL *channel, u32 queue,
+sig_write_data(struct visorchannel *channel, u32 queue,
 	       struct signal_queue_header *sig_hdr, u32 slot, void *data)
 {
 	return sig_do_data(channel, queue, sig_hdr, slot, data, TRUE);
@@ -409,7 +412,7 @@
 }				/* end safe_sig_queue_validate */
 
 BOOL
-visorchannel_signalremove(VISORCHANNEL *channel, u32 queue, void *msg)
+visorchannel_signalremove(struct visorchannel *channel, u32 queue, void *msg)
 {
 	BOOL rc = FALSE;
 	struct signal_queue_header sig_hdr;
@@ -456,7 +459,7 @@
 EXPORT_SYMBOL_GPL(visorchannel_signalremove);
 
 BOOL
-visorchannel_signalinsert(VISORCHANNEL *channel, u32 queue, void *msg)
+visorchannel_signalinsert(struct visorchannel *channel, u32 queue, void *msg)
 {
 	BOOL rc = FALSE;
 	struct signal_queue_header sig_hdr;
@@ -511,7 +514,7 @@
 EXPORT_SYMBOL_GPL(visorchannel_signalinsert);
 
 int
-visorchannel_signalqueue_slots_avail(VISORCHANNEL *channel, u32 queue)
+visorchannel_signalqueue_slots_avail(struct visorchannel *channel, u32 queue)
 {
 	struct signal_queue_header sig_hdr;
 	u32 slots_avail, slots_used;
@@ -530,7 +533,7 @@
 EXPORT_SYMBOL_GPL(visorchannel_signalqueue_slots_avail);
 
 int
-visorchannel_signalqueue_max_slots(VISORCHANNEL *channel, u32 queue)
+visorchannel_signalqueue_max_slots(struct visorchannel *channel, u32 queue)
 {
 	struct signal_queue_header sig_hdr;
 
@@ -565,7 +568,7 @@
 }
 
 void
-visorchannel_debug(VISORCHANNEL *channel, int nQueues,
+visorchannel_debug(struct visorchannel *channel, int num_queues,
 		   struct seq_file *seq, u32 off)
 {
 	HOSTADDRESS addr = 0;
@@ -625,7 +628,7 @@
 	if ((phdr->ch_space_offset == 0) || (errcode < 0))
 		;
 	else
-		for (i = 0; i < nQueues; i++) {
+		for (i = 0; i < num_queues; i++) {
 			struct signal_queue_header q;
 
 			errcode = visorchannel_read(channel,
@@ -647,7 +650,7 @@
 EXPORT_SYMBOL_GPL(visorchannel_debug);
 
 void
-visorchannel_dump_section(VISORCHANNEL *chan, char *s,
+visorchannel_dump_section(struct visorchannel *chan, char *s,
 			  int off, int len, struct seq_file *seq)
 {
 	char *buf, *tbuf, *fmtbuf;
diff --git a/drivers/staging/unisys/visorchipset/file.c b/drivers/staging/unisys/visorchipset/file.c
index 373fa36..e51fd4e 100644
--- a/drivers/staging/unisys/visorchipset/file.c
+++ b/drivers/staging/unisys/visorchipset/file.c
@@ -28,85 +28,75 @@
 
 #define CURRENT_FILE_PC VISOR_CHIPSET_PC_file_c
 
-static struct cdev Cdev;
-static VISORCHANNEL **PControlVm_channel;
-static dev_t MajorDev = -1; /**< indicates major num for device */
-static BOOL Registered = FALSE;
+static struct cdev file_cdev;
+static struct visorchannel **file_controlvm_channel;
+static dev_t majordev = -1; /**< indicates major num for device */
+static BOOL registered = FALSE;
 
 static int visorchipset_open(struct inode *inode, struct file *file);
 static int visorchipset_release(struct inode *inode, struct file *file);
 static int visorchipset_mmap(struct file *file, struct vm_area_struct *vma);
-#ifdef HAVE_UNLOCKED_IOCTL
 long visorchipset_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
-#else
-int visorchipset_ioctl(struct inode *inode, struct file *file,
-		       unsigned int cmd, unsigned long arg);
-#endif
 
 static const struct file_operations visorchipset_fops = {
 	.owner = THIS_MODULE,
 	.open = visorchipset_open,
 	.read = NULL,
 	.write = NULL,
-#ifdef HAVE_UNLOCKED_IOCTL
 	.unlocked_ioctl = visorchipset_ioctl,
-#else
-	.ioctl = visorchipset_ioctl,
-#endif
 	.release = visorchipset_release,
 	.mmap = visorchipset_mmap,
 };
 
 int
-visorchipset_file_init(dev_t majorDev, VISORCHANNEL **pControlVm_channel)
+visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel)
 {
-	int rc = -1;
+	int rc = 0;
 
-	PControlVm_channel = pControlVm_channel;
-	MajorDev = majorDev;
-	cdev_init(&Cdev, &visorchipset_fops);
-	Cdev.owner = THIS_MODULE;
-	if (MAJOR(MajorDev) == 0) {
+	file_controlvm_channel = controlvm_channel;
+	majordev = major_dev;
+	cdev_init(&file_cdev, &visorchipset_fops);
+	file_cdev.owner = THIS_MODULE;
+	if (MAJOR(majordev) == 0) {
 		/* dynamic major device number registration required */
-		if (alloc_chrdev_region(&MajorDev, 0, 1, MYDRVNAME) < 0) {
+		if (alloc_chrdev_region(&majordev, 0, 1, MYDRVNAME) < 0) {
 			ERRDRV("Unable to allocate+register char device %s",
 			       MYDRVNAME);
-			goto Away;
+			return -1;
 		}
-		Registered = TRUE;
-		INFODRV("New major number %d registered\n", MAJOR(MajorDev));
+		registered = TRUE;
+		INFODRV("New major number %d registered\n", MAJOR(majordev));
 	} else {
 		/* static major device number registration required */
-		if (register_chrdev_region(MajorDev, 1, MYDRVNAME) < 0) {
+		if (register_chrdev_region(majordev, 1, MYDRVNAME) < 0) {
 			ERRDRV("Unable to register char device %s", MYDRVNAME);
-			goto Away;
+			return -1;
 		}
-		Registered = TRUE;
-		INFODRV("Static major number %d registered\n", MAJOR(MajorDev));
+		registered = TRUE;
+		INFODRV("Static major number %d registered\n", MAJOR(majordev));
 	}
-	if (cdev_add(&Cdev, MKDEV(MAJOR(MajorDev), 0), 1) < 0) {
+	rc = cdev_add(&file_cdev, MKDEV(MAJOR(majordev), 0), 1);
+	if (rc  < 0) {
 		ERRDRV("failed to create char device: (status=%d)\n", rc);
-		goto Away;
+		return -1;
 	}
 	INFODRV("Registered char device for %s (major=%d)",
-		MYDRVNAME, MAJOR(MajorDev));
-	rc = 0;
-Away:
-	return rc;
+		MYDRVNAME, MAJOR(majordev));
+	return 0;
 }
 
 void
 visorchipset_file_cleanup(void)
 {
-	if (Cdev.ops != NULL)
-		cdev_del(&Cdev);
-	Cdev.ops = NULL;
-	if (Registered) {
-		if (MAJOR(MajorDev) >= 0) {
-			unregister_chrdev_region(MajorDev, 1);
-			MajorDev = MKDEV(0, 0);
+	if (file_cdev.ops != NULL)
+		cdev_del(&file_cdev);
+	file_cdev.ops = NULL;
+	if (registered) {
+		if (MAJOR(majordev) >= 0) {
+			unregister_chrdev_region(majordev, 1);
+			majordev = MKDEV(0, 0);
 		}
-		Registered = FALSE;
+		registered = FALSE;
 	}
 }
 
@@ -114,17 +104,12 @@
 visorchipset_open(struct inode *inode, struct file *file)
 {
 	unsigned minor_number = iminor(inode);
-	int rc = -ENODEV;
 
 	DEBUGDRV("%s", __func__);
 	if (minor_number != 0)
-		goto Away;
+		return -ENODEV;
 	file->private_data = NULL;
-	rc = 0;
-Away:
-	if (rc < 0)
-		ERRDRV("%s minor=%d failed", __func__, minor_number);
-	return rc;
+	return 0;
 }
 
 static int
@@ -137,7 +122,7 @@
 static int
 visorchipset_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	ulong physAddr = 0;
+	ulong physaddr = 0;
 	ulong offset = vma->vm_pgoff << PAGE_SHIFT;
 	GUEST_PHYSICAL_ADDRESS addr = 0;
 
@@ -150,11 +135,11 @@
 	switch (offset) {
 	case VISORCHIPSET_MMAP_CONTROLCHANOFFSET:
 		vma->vm_flags |= VM_IO;
-		if (*PControlVm_channel == NULL) {
+		if (*file_controlvm_channel == NULL) {
 			ERRDRV("%s no controlvm channel yet", __func__);
 			return -ENXIO;
 		}
-		visorchannel_read(*PControlVm_channel,
+		visorchannel_read(*file_controlvm_channel,
 			offsetof(struct spar_controlvm_channel_protocol,
 				 gp_control_channel),
 			&addr, sizeof(addr));
@@ -162,10 +147,10 @@
 			ERRDRV("%s control channel address is 0", __func__);
 			return -ENXIO;
 		}
-		physAddr = (ulong) (addr);
-		DEBUGDRV("mapping physical address = 0x%lx", physAddr);
+		physaddr = (ulong)addr;
+		DEBUGDRV("mapping physical address = 0x%lx", physaddr);
 		if (remap_pfn_range(vma, vma->vm_start,
-				    physAddr >> PAGE_SHIFT,
+				    physaddr >> PAGE_SHIFT,
 				    vma->vm_end - vma->vm_start,
 				    /*pgprot_noncached */
 				    (vma->vm_page_prot))) {
@@ -180,16 +165,8 @@
 	return 0;
 }
 
-#ifdef HAVE_UNLOCKED_IOCTL
-long
-visorchipset_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-#else
-int
-visorchipset_ioctl(struct inode *inode, struct file *file,
-		   unsigned int cmd, unsigned long arg)
-#endif
+long visorchipset_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-	int rc = SUCCESS;
 	s64 adjustment;
 	s64 vrtc_offset;
 
@@ -200,28 +177,21 @@
 		vrtc_offset = issue_vmcall_query_guest_virtual_time_offset();
 		if (copy_to_user
 		    ((void __user *)arg, &vrtc_offset, sizeof(vrtc_offset))) {
-			rc = -EFAULT;
-			goto Away;
+			return -EFAULT;
 		}
 		DBGINF("insde visorchipset_ioctl, cmd=%d, vrtc_offset=%lld",
 		       cmd, vrtc_offset);
-		break;
+		return SUCCESS;
 	case VMCALL_UPDATE_PHYSICAL_TIME:
 		if (copy_from_user
 		    (&adjustment, (void __user *)arg, sizeof(adjustment))) {
-			rc = -EFAULT;
-			goto Away;
+			return -EFAULT;
 		}
 		DBGINF("insde visorchipset_ioctl, cmd=%d, adjustment=%lld", cmd,
 		       adjustment);
-		rc = issue_vmcall_update_physical_time(adjustment);
-		break;
+		return issue_vmcall_update_physical_time(adjustment);
 	default:
 		LOGERR("visorchipset_ioctl received invalid command");
-		rc = -EFAULT;
-		break;
+		return -EFAULT;
 	}
-Away:
-	DBGINF("exiting %d!", rc);
-	return rc;
 }
diff --git a/drivers/staging/unisys/visorchipset/file.h b/drivers/staging/unisys/visorchipset/file.h
index 21bb906..dc7a195 100644
--- a/drivers/staging/unisys/visorchipset/file.h
+++ b/drivers/staging/unisys/visorchipset/file.h
@@ -20,7 +20,8 @@
 
 #include "globals.h"
 
-int visorchipset_file_init(dev_t majorDev, VISORCHANNEL **pControlVm_channel);
+int visorchipset_file_init(dev_t majorDev,
+			   struct visorchannel **pControlVm_channel);
 void visorchipset_file_cleanup(void);
 
 #endif
diff --git a/drivers/staging/unisys/visorchipset/globals.h b/drivers/staging/unisys/visorchipset/globals.h
index 0fe1459..a1d35d4 100644
--- a/drivers/staging/unisys/visorchipset/globals.h
+++ b/drivers/staging/unisys/visorchipset/globals.h
@@ -15,7 +15,6 @@
  * details.
  */
 
-
 #ifndef __VISORCHIPSET_GLOBALS_H__
 #define __VISORCHIPSET_GLOBALS_H__
 
@@ -28,7 +27,6 @@
 
 #define MYDRVNAME "visorchipset"
 
-
 /* module parameters */
 
 extern int visorchipset_testvnic;
diff --git a/drivers/staging/unisys/visorchipset/testing.h b/drivers/staging/unisys/visorchipset/testing.h
deleted file mode 100644
index 573aa8b..0000000
--- a/drivers/staging/unisys/visorchipset/testing.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* testing.h
- *
- * Copyright (C) 2010 - 2013 UNISYS CORPORATION
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- */
-
-#ifndef __VISORCHIPSET_TESTING_H__
-#define __VISORCHIPSET_TESTING_H__
-
-#define VISORCHIPSET_TEST_PROC
-#include <linux/uuid.h>
-#include "globals.h"
-#include "controlvmchannel.h"
-
-void test_produce_test_message(struct controlvm_message *msg,
-			       int isLocalTestAddr);
-BOOL test_consume_test_message(struct controlvm_message *msg);
-void test_manufacture_vnic_client_add(void *p);
-void test_manufacture_vnic_client_add_phys(HOSTADDRESS addr);
-void test_manufacture_preamble_messages(void);
-void test_manufacture_device_attach(ulong busNo, ulong devNo);
-void test_manufacture_device_add(ulong busNo, ulong devNo, uuid_le dataTypeGuid,
-				 void *pChannel);
-void test_manufacture_add_bus(ulong busNo, ulong maxDevices,
-			      uuid_le id, u8 *name, BOOL isServer);
-void test_manufacture_device_destroy(ulong busNo, ulong devNo);
-void test_manufacture_bus_destroy(ulong busNo);
-void test_manufacture_detach_externalPort(ulong switchNo, ulong externalPortNo);
-void test_manufacture_detach_internalPort(ulong switchNo, ulong internalPortNo);
-void test_cleanup(void);
-
-#endif
diff --git a/drivers/staging/unisys/visorchipset/visorchipset.h b/drivers/staging/unisys/visorchipset/visorchipset.h
index 46dad63..98f3ba4 100644
--- a/drivers/staging/unisys/visorchipset/visorchipset.h
+++ b/drivers/staging/unisys/visorchipset/visorchipset.h
@@ -158,61 +158,6 @@
 	return NULL;
 }
 
-/** Attributes for a particular Supervisor switch.
- */
-struct visorchipset_switch_info {
-	u32 switch_no;
-	struct visorchipset_state state;
-	uuid_le switch_type_uuid;
-	u8 *authservice1;
-	u8 *authservice2;
-	u8 *authservice3;
-	u8 *security_context;
-	u64 reserved;
-	u32 reserved2;		/* control_vm_id */
-	struct device dev;
-	BOOL dev_exists;
-	struct controlvm_message_header pending_msg_hdr;
-};
-
-/** Attributes for a particular Supervisor external port, which is connected
- *  to a specific switch.
- */
-struct visorchipset_externalport_info {
-	u32 switch_no;
-	u32 external_port_no;
-	struct visorchipset_state state;
-	uuid_le network_zone_uuid;
-	int pd_port;
-	u8 *ip;
-	u8 *ip_netmask;
-	u8 *ip_broadcast;
-	u8 *ip_network;
-	u8 *ip_gateway;
-	u8 *ip_dns;
-	u64 reserved1;
-	u32 reserved2;		/* control_vm_id */
-	struct device dev;
-	BOOL dev_exists;
-	struct controlvm_message_header pending_msg_hdr;
-};
-
-/** Attributes for a particular Supervisor internal port, which is how a
- *  device connects to a particular switch.
- */
-struct visorchipset_internalport_info {
-	u32 switch_no;
-	u32 internal_port_no;
-	struct visorchipset_state state;
-	u32 bus_no;		/* valid only when state.attached == 1 */
-	u32 dev_no;		/* valid only when state.attached == 1 */
-	u64 reserved1;
-	u32 reserved2;		/* CONTROLVM_ID */
-	struct controlvm_message_header pending_msg_hdr;
-	MYPROCOBJECT *proc_object;
-
-};
-
 /*  These functions will be called from within visorchipset when certain
  *  events happen.  (The implementation of these functions is outside of
  *  visorchipset.)
diff --git a/drivers/staging/unisys/visorchipset/visorchipset_main.c b/drivers/staging/unisys/visorchipset/visorchipset_main.c
index 7e6be32..82e259d 100644
--- a/drivers/staging/unisys/visorchipset/visorchipset_main.c
+++ b/drivers/staging/unisys/visorchipset/visorchipset_main.c
@@ -20,7 +20,6 @@
 #include "procobjecttree.h"
 #include "visorchannel.h"
 #include "periodic_work.h"
-#include "testing.h"
 #include "file.h"
 #include "parser.h"
 #include "uniklog.h"
@@ -102,7 +101,7 @@
 static LIST_HEAD(BusInfoList);
 static LIST_HEAD(DevInfoList);
 
-static VISORCHANNEL *ControlVm_channel;
+static struct visorchannel *ControlVm_channel;
 
 typedef struct {
 	u8 __iomem *ptr;	/* pointer to base address of payload pool */
diff --git a/drivers/staging/unisys/visorchipset/visorchipset_umode.h b/drivers/staging/unisys/visorchipset/visorchipset_umode.h
index 06ba5b7..6cf6eccb 100644
--- a/drivers/staging/unisys/visorchipset/visorchipset_umode.h
+++ b/drivers/staging/unisys/visorchipset/visorchipset_umode.h
@@ -26,8 +26,6 @@
 #ifndef __VISORCHIPSET_UMODE_H
 #define __VISORCHIPSET_UMODE_H
 
-
-
 /** The user-mode program can access the control channel buffer directly
  *  via this memory map.
  */
diff --git a/drivers/staging/unisys/visorutil/charqueue.c b/drivers/staging/unisys/visorutil/charqueue.c
index 1ce7003..ac7acb7 100644
--- a/drivers/staging/unisys/visorutil/charqueue.c
+++ b/drivers/staging/unisys/visorutil/charqueue.c
@@ -28,7 +28,7 @@
 struct charqueue {
 	int alloc_size;
 	int nslots;
-	spinlock_t lock;
+	spinlock_t lock; /* read/write lock for this structure */
 	int head, tail;
 	unsigned char buf[0];
 };
diff --git a/drivers/staging/vt6655/baseband.c b/drivers/staging/vt6655/baseband.c
index f8c5fc3..ecf7dac 100644
--- a/drivers/staging/vt6655/baseband.c
+++ b/drivers/staging/vt6655/baseband.c
@@ -27,7 +27,8 @@
  *
  * Functions:
  *      BBuGetFrameTime        - Calculate data frame transmitting time
- *      BBvCaculateParameter   - Caculate PhyLength, PhyService and Phy Signal parameter for baseband Tx
+ *      BBvCaculateParameter   - Caculate PhyLength, PhyService and Phy Signal
+ *                               parameter for baseband Tx
  *      BBbReadEmbedded         - Embedded read baseband register via MAC
  *      BBbWriteEmbedded        - Embedded write baseband register via MAC
  *      BBbVT3253Init          - VIA VT3253 baseband chip init code
diff --git a/drivers/staging/vt6655/card.c b/drivers/staging/vt6655/card.c
index a079640..47801ca 100644
--- a/drivers/staging/vt6655/card.c
+++ b/drivers/staging/vt6655/card.c
@@ -670,6 +670,9 @@
 {
 	union vnt_phy_field_swap phy;
 	unsigned char byTxRate, byRsvTime;      /* For OFDM */
+	unsigned long flags;
+
+	spin_lock_irqsave(&pDevice->lock, flags);
 
 	/* Set to Page1 */
 	MACvSelectPage1(pDevice->PortOffset);
@@ -767,6 +770,8 @@
 	VNSvOutPortW(pDevice->PortOffset + MAC_REG_RSPINF_A_72, MAKEWORD(byTxRate, byRsvTime));
 	/* Set to Page0 */
 	MACvSelectPage0(pDevice->PortOffset);
+
+	spin_unlock_irqrestore(&pDevice->lock, flags);
 }
 
 void CARDvUpdateBasicTopRate(struct vnt_private *pDevice)
diff --git a/drivers/staging/vt6655/channel.c b/drivers/staging/vt6655/channel.c
index 70f8705..d593f5f 100644
--- a/drivers/staging/vt6655/channel.c
+++ b/drivers/staging/vt6655/channel.c
@@ -210,6 +210,10 @@
 	BBvSoftwareReset(pDevice);
 
 	if (pDevice->byLocalID > REV_ID_VT3253_B1) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&pDevice->lock, flags);
+
 		/* set HW default power register */
 		MACvSelectPage1(pDevice->PortOffset);
 		RFbSetPower(pDevice, RATE_1M, pDevice->byCurrentCh);
@@ -217,6 +221,8 @@
 		RFbSetPower(pDevice, RATE_6M, pDevice->byCurrentCh);
 		VNSvOutPortB(pDevice->PortOffset + MAC_REG_PWROFDM, pDevice->byCurPwr);
 		MACvSelectPage0(pDevice->PortOffset);
+
+		spin_unlock_irqrestore(&pDevice->lock, flags);
 	}
 
 	if (pDevice->byBBType == BB_TYPE_11B)
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index cd1a277..c755ec2 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1572,6 +1572,10 @@
 
 	if (changed_flags & FIF_ALLMULTI) {
 		if (*total_flags & FIF_ALLMULTI) {
+			unsigned long flags;
+
+			spin_lock_irqsave(&priv->lock, flags);
+
 			if (priv->mc_list_count > 2) {
 				MACvSelectPage1(priv->PortOffset);
 
@@ -1593,6 +1597,8 @@
 				MACvSelectPage0(priv->PortOffset);
 			}
 
+			spin_unlock_irqrestore(&priv->lock, flags);
+
 			rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
 		} else {
 			rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
@@ -1676,7 +1682,7 @@
 	.reset_tsf		= vnt_reset_tsf,
 };
 
-int vnt_init(struct vnt_private *priv)
+static int vnt_init(struct vnt_private *priv)
 {
 	SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);
 
diff --git a/drivers/staging/vt6655/mac.c b/drivers/staging/vt6655/mac.c
index 8f0d652..63c9c7e 100644
--- a/drivers/staging/vt6655/mac.c
+++ b/drivers/staging/vt6655/mac.c
@@ -30,7 +30,6 @@
  *      MACbIsRegBitsOff - Test if All test Bits Off
  *      MACbIsIntDisable - Test if MAC interrupt disable
  *      MACvSetShortRetryLimit - Set 802.11 Short Retry limit
- *      MACvGetShortRetryLimit - Get 802.11 Short Retry limit
  *      MACvSetLongRetryLimit - Set 802.11 Long Retry limit
  *      MACvSetLoopbackMode - Set MAC Loopback Mode
  *      MACvSaveContext - Save Context of MAC Registers
@@ -146,24 +145,6 @@
 	VNSvOutPortB(dwIoBase + MAC_REG_SRT, byRetryLimit);
 }
 
-/*
- * Description:
- *      Get 802.11 Short Retry Limit
- *
- * Parameters:
- *  In:
- *      dwIoBase        - Base Address for MAC
- *  Out:
- *      pbyRetryLimit   - Retry Limit Get
- *
- * Return Value: none
- *
- */
-void MACvGetShortRetryLimit(void __iomem *dwIoBase, unsigned char *pbyRetryLimit)
-{
-	// get SRT
-	VNSvInPortB(dwIoBase + MAC_REG_SRT, pbyRetryLimit);
-}
 
 /*
  * Description:
@@ -356,7 +337,7 @@
 
 /*
  * Description:
- *      Trun Off MAC Rx
+ *      Turn Off MAC Rx
  *
  * Parameters:
  *  In:
@@ -417,7 +398,7 @@
 
 /*
  * Description:
- *      Trun Off MAC Tx
+ *      Turn Off MAC Tx
  *
  * Parameters:
  *  In:
diff --git a/drivers/staging/vt6655/mac.h b/drivers/staging/vt6655/mac.h
index e1e7e10..8e0200a 100644
--- a/drivers/staging/vt6655/mac.h
+++ b/drivers/staging/vt6655/mac.h
@@ -38,13 +38,11 @@
 #include "upc.h"
 
 /*---------------------  Export Definitions -------------------------*/
-//
-// Registers in the MAC
-//
+/* Registers in the MAC */
 #define MAC_MAX_CONTEXT_SIZE_PAGE0  256
 #define MAC_MAX_CONTEXT_SIZE_PAGE1  128
 
-// Registers not related to 802.11b
+/* Registers not related to 802.11b */
 #define MAC_REG_BCFG0       0x00
 #define MAC_REG_BCFG1       0x01
 #define MAC_REG_FCR0        0x02
@@ -69,15 +67,16 @@
 #define MAC_REG_TMCTL0      0x18
 #define MAC_REG_TMCTL1      0x19
 #define MAC_REG_TMDATA0     0x1C
-// MAC Parameter related
-#define MAC_REG_LRT         0x20        //
-#define MAC_REG_SRT         0x21        //
-#define MAC_REG_SIFS        0x22        //
-#define MAC_REG_DIFS        0x23        //
-#define MAC_REG_EIFS        0x24        //
-#define MAC_REG_SLOT        0x25        //
-#define MAC_REG_BI          0x26        //
-#define MAC_REG_CWMAXMIN0   0x28        //
+
+/* MAC Parameter related */
+#define MAC_REG_LRT         0x20
+#define MAC_REG_SRT         0x21
+#define MAC_REG_SIFS        0x22
+#define MAC_REG_DIFS        0x23
+#define MAC_REG_EIFS        0x24
+#define MAC_REG_SLOT        0x25
+#define MAC_REG_BI          0x26
+#define MAC_REG_CWMAXMIN0   0x28
 #define MAC_REG_LINKOFFTOTM 0x2A
 #define MAC_REG_SWTMOT      0x2B
 #define MAC_REG_MIBCNTR     0x2C
@@ -85,26 +84,29 @@
 #define MAC_REG_RTSFAILCNT  0x2D
 #define MAC_REG_ACKFAILCNT  0x2E
 #define MAC_REG_FCSERRCNT   0x2F
-// TSF Related
-#define MAC_REG_TSFCNTR     0x30        //
-#define MAC_REG_NEXTTBTT    0x38        //
-#define MAC_REG_TSFOFST     0x40        //
-#define MAC_REG_TFTCTL      0x48        //
-// WMAC Control/Status Related
-#define MAC_REG_ENCFG       0x4C        //
-#define MAC_REG_PAGE1SEL    0x4F        //
-#define MAC_REG_CFG         0x50        //
-#define MAC_REG_TEST        0x52        //
-#define MAC_REG_HOSTCR      0x54        //
-#define MAC_REG_MACCR       0x55        //
-#define MAC_REG_RCR         0x56        //
-#define MAC_REG_TCR         0x57        //
-#define MAC_REG_IMR         0x58        //
+
+/* TSF Related */
+#define MAC_REG_TSFCNTR     0x30
+#define MAC_REG_NEXTTBTT    0x38
+#define MAC_REG_TSFOFST     0x40
+#define MAC_REG_TFTCTL      0x48
+
+/* WMAC Control/Status Related */
+#define MAC_REG_ENCFG       0x4C
+#define MAC_REG_PAGE1SEL    0x4F
+#define MAC_REG_CFG         0x50
+#define MAC_REG_TEST        0x52
+#define MAC_REG_HOSTCR      0x54
+#define MAC_REG_MACCR       0x55
+#define MAC_REG_RCR         0x56
+#define MAC_REG_TCR         0x57
+#define MAC_REG_IMR         0x58
 #define MAC_REG_ISR         0x5C
-// Power Saving Related
-#define MAC_REG_PSCFG       0x60        //
-#define MAC_REG_PSCTL       0x61        //
-#define MAC_REG_PSPWRSIG    0x62        //
+
+/* Power Saving Related */
+#define MAC_REG_PSCFG       0x60
+#define MAC_REG_PSCTL       0x61
+#define MAC_REG_PSPWRSIG    0x62
 #define MAC_REG_BBCR13      0x63
 #define MAC_REG_AIDATIM     0x64
 #define MAC_REG_PWBT        0x66
@@ -112,41 +114,45 @@
 #define MAC_REG_CALTMR      0x69
 #define MAC_REG_SYNSPACCNT  0x6A
 #define MAC_REG_WAKSYNOPT   0x6B
-// Baseband/IF Control Group
-#define MAC_REG_BBREGCTL    0x6C        //
+
+/* Baseband/IF Control Group */
+#define MAC_REG_BBREGCTL    0x6C
 #define MAC_REG_CHANNEL     0x6D
 #define MAC_REG_BBREGADR    0x6E
 #define MAC_REG_BBREGDATA   0x6F
-#define MAC_REG_IFREGCTL    0x70        //
-#define MAC_REG_IFDATA      0x71        //
-#define MAC_REG_ITRTMSET    0x74        //
+#define MAC_REG_IFREGCTL    0x70
+#define MAC_REG_IFDATA      0x71
+#define MAC_REG_ITRTMSET    0x74
 #define MAC_REG_PAPEDELAY   0x77
-#define MAC_REG_SOFTPWRCTL  0x78        //
-#define MAC_REG_GPIOCTL0    0x7A        //
-#define MAC_REG_GPIOCTL1    0x7B        //
+#define MAC_REG_SOFTPWRCTL  0x78
+#define MAC_REG_GPIOCTL0    0x7A
+#define MAC_REG_GPIOCTL1    0x7B
 
-// MAC DMA Related Group
-#define MAC_REG_TXDMACTL0   0x7C        //
-#define MAC_REG_TXDMAPTR0   0x80        //
-#define MAC_REG_AC0DMACTL   0x84        //
-#define MAC_REG_AC0DMAPTR   0x88        //
-#define MAC_REG_BCNDMACTL   0x8C        //
-#define MAC_REG_BCNDMAPTR   0x90        //
-#define MAC_REG_RXDMACTL0   0x94        //
-#define MAC_REG_RXDMAPTR0   0x98        //
-#define MAC_REG_RXDMACTL1   0x9C        //
-#define MAC_REG_RXDMAPTR1   0xA0        //
-#define MAC_REG_SYNCDMACTL  0xA4        //
+/* MAC DMA Related Group */
+#define MAC_REG_TXDMACTL0   0x7C
+#define MAC_REG_TXDMAPTR0   0x80
+#define MAC_REG_AC0DMACTL   0x84
+#define MAC_REG_AC0DMAPTR   0x88
+#define MAC_REG_BCNDMACTL   0x8C
+#define MAC_REG_BCNDMAPTR   0x90
+#define MAC_REG_RXDMACTL0   0x94
+#define MAC_REG_RXDMAPTR0   0x98
+#define MAC_REG_RXDMACTL1   0x9C
+#define MAC_REG_RXDMAPTR1   0xA0
+#define MAC_REG_SYNCDMACTL  0xA4
 #define MAC_REG_SYNCDMAPTR  0xA8
 #define MAC_REG_ATIMDMACTL  0xAC
 #define MAC_REG_ATIMDMAPTR  0xB0
-// MiscFF PIO related
+
+/* MiscFF PIO related */
 #define MAC_REG_MISCFFNDEX  0xB4
 #define MAC_REG_MISCFFCTL   0xB6
 #define MAC_REG_MISCFFDATA  0xB8
-// Extend SW Timer
+
+/* Extend SW Timer */
 #define MAC_REG_TMDATA1     0xBC
-// WOW Related Group
+
+/* WOW Related Group */
 #define MAC_REG_WAKEUPEN0   0xC0
 #define MAC_REG_WAKEUPEN1   0xC1
 #define MAC_REG_WAKEUPSR0   0xC2
@@ -156,19 +162,21 @@
 #define MAC_REG_WAKE128_2   0xE4
 #define MAC_REG_WAKE128_3   0xF4
 
-/////////////// Page 1 ///////////////////
+/************** Page 1 ******************/
 #define MAC_REG_CRC_128_0   0x04
 #define MAC_REG_CRC_128_1   0x06
 #define MAC_REG_CRC_128_2   0x08
 #define MAC_REG_CRC_128_3   0x0A
-// MAC Configuration Group
+
+/* MAC Configuration Group */
 #define MAC_REG_PAR0        0x0C
 #define MAC_REG_PAR4        0x10
 #define MAC_REG_BSSID0      0x14
 #define MAC_REG_BSSID4      0x18
 #define MAC_REG_MAR0        0x1C
 #define MAC_REG_MAR4        0x20
-// MAC RSPPKT INFO Group
+
+/* MAC RSPPKT INFO Group */
 #define MAC_REG_RSPINF_B_1  0x24
 #define MAC_REG_RSPINF_B_2  0x28
 #define MAC_REG_RSPINF_B_5  0x2C
@@ -183,7 +191,7 @@
 #define MAC_REG_RSPINF_A_54 0x42
 #define MAC_REG_RSPINF_A_72 0x44
 
-// 802.11h relative
+/* 802.11h relative */
 #define MAC_REG_QUIETINIT   0x60
 #define MAC_REG_QUIETGAP    0x62
 #define MAC_REG_QUIETDUR    0x64
@@ -195,9 +203,7 @@
 #define MAC_REG_PWRCCK      0x73
 #define MAC_REG_PWROFDM     0x7C
 
-//
-// Bits in the BCFG0 register
-//
+/* Bits in the BCFG0 register */
 #define BCFG0_PERROFF       0x40
 #define BCFG0_MRDMDIS       0x20
 #define BCFG0_MRDLDIS       0x10
@@ -205,9 +211,7 @@
 #define BCFG0_VSERREN       0x02
 #define BCFG0_LATMEN        0x01
 
-//
-// Bits in the BCFG1 register
-//
+/* Bits in the BCFG1 register */
 #define BCFG1_CFUNOPT       0x80
 #define BCFG1_CREQOPT       0x40
 #define BCFG1_DMA8          0x10
@@ -216,25 +220,23 @@
 #define BCFG1_MIOEN         0x02
 #define BCFG1_CISDLYEN      0x01
 
-// Bits in RAMBIST registers
-#define BISTCMD_TSTPAT5     0x00        //
-#define BISTCMD_TSTPATA     0x80        //
-#define BISTCMD_TSTERR      0x20        //
-#define BISTCMD_TSTPATF     0x18        //
-#define BISTCMD_TSTPAT0     0x10        //
-#define BISTCMD_TSTMODE     0x04        //
-#define BISTCMD_TSTITTX     0x03        //
-#define BISTCMD_TSTATRX     0x02        //
-#define BISTCMD_TSTATTX     0x01        //
-#define BISTCMD_TSTRX       0x00        //
-#define BISTSR0_BISTGO      0x01        //
-#define BISTSR1_TSTSR       0x01        //
-#define BISTSR2_CMDPRTEN    0x02        //
-#define BISTSR2_RAMTSTEN    0x01        //
+/* Bits in RAMBIST registers */
+#define BISTCMD_TSTPAT5     0x00
+#define BISTCMD_TSTPATA     0x80
+#define BISTCMD_TSTERR      0x20
+#define BISTCMD_TSTPATF     0x18
+#define BISTCMD_TSTPAT0     0x10
+#define BISTCMD_TSTMODE     0x04
+#define BISTCMD_TSTITTX     0x03
+#define BISTCMD_TSTATRX     0x02
+#define BISTCMD_TSTATTX     0x01
+#define BISTCMD_TSTRX       0x00
+#define BISTSR0_BISTGO      0x01
+#define BISTSR1_TSTSR       0x01
+#define BISTSR2_CMDPRTEN    0x02
+#define BISTSR2_RAMTSTEN    0x01
 
-//
-// Bits in the I2MCFG EEPROM register
-//
+/* Bits in the I2MCFG EEPROM register */
 #define I2MCFG_BOUNDCTL     0x80
 #define I2MCFG_WAITCTL      0x20
 #define I2MCFG_SCLOECTL     0x10
@@ -243,50 +245,38 @@
 #define I2MCFG_I2MLDSEQ     0x02
 #define I2MCFG_I2CMFAST     0x01
 
-//
-// Bits in the I2MCSR EEPROM register
-//
+/* Bits in the I2MCSR EEPROM register */
 #define I2MCSR_EEMW         0x80
 #define I2MCSR_EEMR         0x40
 #define I2MCSR_AUTOLD       0x08
 #define I2MCSR_NACK         0x02
 #define I2MCSR_DONE         0x01
 
-//
-// Bits in the PMC1 register
-//
+/* Bits in the PMC1 register */
 #define SPS_RST             0x80
 #define PCISTIKY            0x40
 #define PME_OVR             0x02
 
-//
-// Bits in the STICKYHW register
-//
+/* Bits in the STICKYHW register */
 #define STICKHW_DS1_SHADOW  0x02
 #define STICKHW_DS0_SHADOW  0x01
 
-//
-// Bits in the TMCTL register
-//
+/* Bits in the TMCTL register */
 #define TMCTL_TSUSP         0x04
 #define TMCTL_TMD           0x02
 #define TMCTL_TE            0x01
 
-//
-// Bits in the TFTCTL register
-//
-#define TFTCTL_HWUTSF       0x80        //
+/* Bits in the TFTCTL register */
+#define TFTCTL_HWUTSF       0x80
 #define TFTCTL_TBTTSYNC     0x40
 #define TFTCTL_HWUTSFEN     0x20
-#define TFTCTL_TSFCNTRRD    0x10        //
-#define TFTCTL_TBTTSYNCEN   0x08        //
-#define TFTCTL_TSFSYNCEN    0x04        //
-#define TFTCTL_TSFCNTRST    0x02        //
-#define TFTCTL_TSFCNTREN    0x01        //
+#define TFTCTL_TSFCNTRRD    0x10
+#define TFTCTL_TBTTSYNCEN   0x08
+#define TFTCTL_TSFSYNCEN    0x04
+#define TFTCTL_TSFCNTRST    0x02
+#define TFTCTL_TSFCNTREN    0x01
 
-//
-// Bits in the EnhanceCFG register
-//
+/* Bits in the EnhanceCFG register */
 #define EnCFG_BarkerPream   0x00020000
 #define EnCFG_NXTBTTCFPSTR  0x00010000
 #define EnCFG_BcnSusClr     0x00000200
@@ -300,14 +290,10 @@
 #define EnCFG_BBType_b      0x00000001
 #define EnCFG_BBType_a      0x00000000
 
-//
-// Bits in the Page1Sel register
-//
+/* Bits in the Page1Sel register */
 #define PAGE1_SEL           0x01
 
-//
-// Bits in the CFG register
-//
+/* Bits in the CFG register */
 #define CFG_TKIPOPT         0x80
 #define CFG_RXDMAOPT        0x40
 #define CFG_TMOT_SW         0x20
@@ -318,242 +304,196 @@
 #define CFG_NOTXTIMEOUT     0x02
 #define CFG_NOBUFOPT        0x01
 
-//
-// Bits in the TEST register
-//
-#define TEST_LBEXT          0x80        //
-#define TEST_LBINT          0x40        //
-#define TEST_LBNONE         0x00        //
-#define TEST_SOFTINT        0x20        //
-#define TEST_CONTTX         0x10        //
-#define TEST_TXPE           0x08        //
-#define TEST_NAVDIS         0x04        //
-#define TEST_NOCTS          0x02        //
-#define TEST_NOACK          0x01        //
+/* Bits in the TEST register */
+#define TEST_LBEXT          0x80
+#define TEST_LBINT          0x40
+#define TEST_LBNONE         0x00
+#define TEST_SOFTINT        0x20
+#define TEST_CONTTX         0x10
+#define TEST_TXPE           0x08
+#define TEST_NAVDIS         0x04
+#define TEST_NOCTS          0x02
+#define TEST_NOACK          0x01
 
-//
-// Bits in the HOSTCR register
-//
-#define HOSTCR_TXONST       0x80        //
-#define HOSTCR_RXONST       0x40        //
-#define HOSTCR_ADHOC        0x20        // Network Type 1 = Ad-hoc
-#define HOSTCR_AP           0x10        // Port Type 1 = AP
-#define HOSTCR_TXON         0x08        //0000 1000
-#define HOSTCR_RXON         0x04        //0000 0100
-#define HOSTCR_MACEN        0x02        //0000 0010
-#define HOSTCR_SOFTRST      0x01        //0000 0001
+/* Bits in the HOSTCR register */
+#define HOSTCR_TXONST       0x80
+#define HOSTCR_RXONST       0x40
+#define HOSTCR_ADHOC        0x20 /* Network Type 1 = Ad-hoc */
+#define HOSTCR_AP           0x10 /* Port Type 1 = AP */
+#define HOSTCR_TXON         0x08 /* 0000 1000 */
+#define HOSTCR_RXON         0x04 /* 0000 0100 */
+#define HOSTCR_MACEN        0x02 /* 0000 0010 */
+#define HOSTCR_SOFTRST      0x01 /* 0000 0001 */
 
-//
-// Bits in the MACCR register
-//
-#define MACCR_SYNCFLUSHOK   0x04        //
-#define MACCR_SYNCFLUSH     0x02        //
-#define MACCR_CLRNAV        0x01        //
+/* Bits in the MACCR register */
+#define MACCR_SYNCFLUSHOK   0x04
+#define MACCR_SYNCFLUSH     0x02
+#define MACCR_CLRNAV        0x01
 
-// Bits in the MAC_REG_GPIOCTL0 register
-//
-#define LED_ACTSET           0x01        //
-#define LED_RFOFF            0x02        //
-#define LED_NOCONNECT        0x04        //
-//
-// Bits in the RCR register
-//
+/* Bits in the MAC_REG_GPIOCTL0 register */
+#define LED_ACTSET           0x01
+#define LED_RFOFF            0x02
+#define LED_NOCONNECT        0x04
+
+/* Bits in the RCR register */
 #define RCR_SSID            0x80
-#define RCR_RXALLTYPE       0x40        //
-#define RCR_UNICAST         0x20        //
-#define RCR_BROADCAST       0x10        //
-#define RCR_MULTICAST       0x08        //
-#define RCR_WPAERR          0x04        //
-#define RCR_ERRCRC          0x02        //
-#define RCR_BSSID           0x01        //
+#define RCR_RXALLTYPE       0x40
+#define RCR_UNICAST         0x20
+#define RCR_BROADCAST       0x10
+#define RCR_MULTICAST       0x08
+#define RCR_WPAERR          0x04
+#define RCR_ERRCRC          0x02
+#define RCR_BSSID           0x01
 
-//
-// Bits in the TCR register
-//
-#define TCR_SYNCDCFOPT      0x02        //
-#define TCR_AUTOBCNTX       0x01        // Beacon automatically transmit enable
+/* Bits in the TCR register */
+#define TCR_SYNCDCFOPT      0x02
+#define TCR_AUTOBCNTX       0x01 /* Beacon automatically transmit enable */
 
-//
-// Bits in the IMR register
-//
-#define IMR_MEASURESTART    0x80000000      //
-#define IMR_QUIETSTART      0x20000000      //
-#define IMR_RADARDETECT     0x10000000      //
-#define IMR_MEASUREEND      0x08000000      //
-#define IMR_SOFTTIMER1      0x00200000      //
-#define IMR_RXDMA1          0x00001000      //0000 0000 0001 0000 0000 0000
-#define IMR_RXNOBUF         0x00000800      //
-#define IMR_MIBNEARFULL     0x00000400      //
-#define IMR_SOFTINT         0x00000200      //
-#define IMR_FETALERR        0x00000100      //
-#define IMR_WATCHDOG        0x00000080      //
-#define IMR_SOFTTIMER       0x00000040      //
-#define IMR_GPIO            0x00000020      //
-#define IMR_TBTT            0x00000010      //
-#define IMR_RXDMA0          0x00000008      //
-#define IMR_BNTX            0x00000004      //
-#define IMR_AC0DMA          0x00000002      //
-#define IMR_TXDMA0          0x00000001      //
+/* Bits in the IMR register */
+#define IMR_MEASURESTART    0x80000000
+#define IMR_QUIETSTART      0x20000000
+#define IMR_RADARDETECT     0x10000000
+#define IMR_MEASUREEND      0x08000000
+#define IMR_SOFTTIMER1      0x00200000
+#define IMR_RXDMA1          0x00001000 /* 0000 0000 0001 0000 0000 0000 */
+#define IMR_RXNOBUF         0x00000800
+#define IMR_MIBNEARFULL     0x00000400
+#define IMR_SOFTINT         0x00000200
+#define IMR_FETALERR        0x00000100
+#define IMR_WATCHDOG        0x00000080
+#define IMR_SOFTTIMER       0x00000040
+#define IMR_GPIO            0x00000020
+#define IMR_TBTT            0x00000010
+#define IMR_RXDMA0          0x00000008
+#define IMR_BNTX            0x00000004
+#define IMR_AC0DMA          0x00000002
+#define IMR_TXDMA0          0x00000001
 
-//
-// Bits in the ISR register
-//
+/* Bits in the ISR register */
+#define ISR_MEASURESTART    0x80000000
+#define ISR_QUIETSTART      0x20000000
+#define ISR_RADARDETECT     0x10000000
+#define ISR_MEASUREEND      0x08000000
+#define ISR_SOFTTIMER1      0x00200000
+#define ISR_RXDMA1          0x00001000 /* 0000 0000 0001 0000 0000 0000 */
+#define ISR_RXNOBUF         0x00000800 /* 0000 0000 0000 1000 0000 0000 */
+#define ISR_MIBNEARFULL     0x00000400 /* 0000 0000 0000 0100 0000 0000 */
+#define ISR_SOFTINT         0x00000200
+#define ISR_FETALERR        0x00000100
+#define ISR_WATCHDOG        0x00000080
+#define ISR_SOFTTIMER       0x00000040
+#define ISR_GPIO            0x00000020
+#define ISR_TBTT            0x00000010
+#define ISR_RXDMA0          0x00000008
+#define ISR_BNTX            0x00000004
+#define ISR_AC0DMA          0x00000002
+#define ISR_TXDMA0          0x00000001
 
-#define ISR_MEASURESTART    0x80000000      //
-#define ISR_QUIETSTART      0x20000000      //
-#define ISR_RADARDETECT     0x10000000      //
-#define ISR_MEASUREEND      0x08000000      //
-#define ISR_SOFTTIMER1      0x00200000      //
-#define ISR_RXDMA1          0x00001000      //0000 0000 0001 0000 0000 0000
-#define ISR_RXNOBUF         0x00000800      //0000 0000 0000 1000 0000 0000
-#define ISR_MIBNEARFULL     0x00000400      //0000 0000 0000 0100 0000 0000
-#define ISR_SOFTINT         0x00000200      //
-#define ISR_FETALERR        0x00000100      //
-#define ISR_WATCHDOG        0x00000080      //
-#define ISR_SOFTTIMER       0x00000040      //
-#define ISR_GPIO            0x00000020      //
-#define ISR_TBTT            0x00000010      //
-#define ISR_RXDMA0          0x00000008      //
-#define ISR_BNTX            0x00000004      //
-#define ISR_AC0DMA          0x00000002      //
-#define ISR_TXDMA0          0x00000001      //
+/* Bits in the PSCFG register */
+#define PSCFG_PHILIPMD      0x40
+#define PSCFG_WAKECALEN     0x20
+#define PSCFG_WAKETMREN     0x10
+#define PSCFG_BBPSPROG      0x08
+#define PSCFG_WAKESYN       0x04
+#define PSCFG_SLEEPSYN      0x02
+#define PSCFG_AUTOSLEEP     0x01
 
-//
-// Bits in the PSCFG register
-//
-#define PSCFG_PHILIPMD      0x40        //
-#define PSCFG_WAKECALEN     0x20        //
-#define PSCFG_WAKETMREN     0x10        //
-#define PSCFG_BBPSPROG      0x08        //
-#define PSCFG_WAKESYN       0x04        //
-#define PSCFG_SLEEPSYN      0x02        //
-#define PSCFG_AUTOSLEEP     0x01        //
+/* Bits in the PSCTL register */
+#define PSCTL_WAKEDONE      0x20
+#define PSCTL_PS            0x10
+#define PSCTL_GO2DOZE       0x08
+#define PSCTL_LNBCN         0x04
+#define PSCTL_ALBCN         0x02
+#define PSCTL_PSEN          0x01
 
-//
-// Bits in the PSCTL register
-//
-#define PSCTL_WAKEDONE      0x20        //
-#define PSCTL_PS            0x10        //
-#define PSCTL_GO2DOZE       0x08        //
-#define PSCTL_LNBCN         0x04        //
-#define PSCTL_ALBCN         0x02        //
-#define PSCTL_PSEN          0x01        //
+/* Bits in the PSPWSIG register */
+#define PSSIG_WPE3          0x80
+#define PSSIG_WPE2          0x40
+#define PSSIG_WPE1          0x20
+#define PSSIG_WRADIOPE      0x10
+#define PSSIG_SPE3          0x08
+#define PSSIG_SPE2          0x04
+#define PSSIG_SPE1          0x02
+#define PSSIG_SRADIOPE      0x01
 
-//
-// Bits in the PSPWSIG register
-//
-#define PSSIG_WPE3          0x80        //
-#define PSSIG_WPE2          0x40        //
-#define PSSIG_WPE1          0x20        //
-#define PSSIG_WRADIOPE      0x10        //
-#define PSSIG_SPE3          0x08        //
-#define PSSIG_SPE2          0x04        //
-#define PSSIG_SPE1          0x02        //
-#define PSSIG_SRADIOPE      0x01        //
+/* Bits in the BBREGCTL register */
+#define BBREGCTL_DONE       0x04
+#define BBREGCTL_REGR       0x02
+#define BBREGCTL_REGW       0x01
 
-//
-// Bits in the BBREGCTL register
-//
-#define BBREGCTL_DONE       0x04        //
-#define BBREGCTL_REGR       0x02        //
-#define BBREGCTL_REGW       0x01        //
+/* Bits in the IFREGCTL register */
+#define IFREGCTL_DONE       0x04
+#define IFREGCTL_IFRF       0x02
+#define IFREGCTL_REGW       0x01
 
-//
-// Bits in the IFREGCTL register
-//
-#define IFREGCTL_DONE       0x04        //
-#define IFREGCTL_IFRF       0x02        //
-#define IFREGCTL_REGW       0x01        //
+/* Bits in the SOFTPWRCTL register */
+#define SOFTPWRCTL_RFLEOPT      0x0800
+#define SOFTPWRCTL_TXPEINV      0x0200
+#define SOFTPWRCTL_SWPECTI      0x0100
+#define SOFTPWRCTL_SWPAPE       0x0020
+#define SOFTPWRCTL_SWCALEN      0x0010
+#define SOFTPWRCTL_SWRADIO_PE   0x0008
+#define SOFTPWRCTL_SWPE2        0x0004
+#define SOFTPWRCTL_SWPE1        0x0002
+#define SOFTPWRCTL_SWPE3        0x0001
 
-//
-// Bits in the SOFTPWRCTL register
-//
-#define SOFTPWRCTL_RFLEOPT      0x0800  //
-#define SOFTPWRCTL_TXPEINV      0x0200  //
-#define SOFTPWRCTL_SWPECTI      0x0100  //
-#define SOFTPWRCTL_SWPAPE       0x0020  //
-#define SOFTPWRCTL_SWCALEN      0x0010  //
-#define SOFTPWRCTL_SWRADIO_PE   0x0008  //
-#define SOFTPWRCTL_SWPE2        0x0004  //
-#define SOFTPWRCTL_SWPE1        0x0002  //
-#define SOFTPWRCTL_SWPE3        0x0001  //
+/* Bits in the GPIOCTL1 register */
+#define GPIO1_DATA1             0x20
+#define GPIO1_MD1               0x10
+#define GPIO1_DATA0             0x02
+#define GPIO1_MD0               0x01
 
-//
-// Bits in the GPIOCTL1 register
-//
-#define GPIO1_DATA1             0x20    //
-#define GPIO1_MD1               0x10    //
-#define GPIO1_DATA0             0x02    //
-#define GPIO1_MD0               0x01    //
+/* Bits in the DMACTL register */
+#define DMACTL_CLRRUN       0x00080000
+#define DMACTL_RUN          0x00000008
+#define DMACTL_WAKE         0x00000004
+#define DMACTL_DEAD         0x00000002
+#define DMACTL_ACTIVE       0x00000001
 
-//
-// Bits in the DMACTL register
-//
-#define DMACTL_CLRRUN       0x00080000  //
-#define DMACTL_RUN          0x00000008  //
-#define DMACTL_WAKE         0x00000004  //
-#define DMACTL_DEAD         0x00000002  //
-#define DMACTL_ACTIVE       0x00000001  //
-//
-// Bits in the RXDMACTL0 register
-//
-#define RX_PERPKT           0x00000100  //
-#define RX_PERPKTCLR        0x01000000  //
-//
-// Bits in the BCNDMACTL register
-//
-#define BEACON_READY        0x01        //
-//
-// Bits in the MISCFFCTL register
-//
-#define MISCFFCTL_WRITE     0x0001      //
+/* Bits in the RXDMACTL0 register */
+#define RX_PERPKT           0x00000100
+#define RX_PERPKTCLR        0x01000000
 
-//
-// Bits in WAKEUPEN0
-//
+/* Bits in the BCNDMACTL register */
+#define BEACON_READY        0x01
+
+/* Bits in the MISCFFCTL register */
+#define MISCFFCTL_WRITE     0x0001
+
+/* Bits in WAKEUPEN0 */
 #define WAKEUPEN0_DIRPKT    0x10
 #define WAKEUPEN0_LINKOFF   0x08
 #define WAKEUPEN0_ATIMEN    0x04
 #define WAKEUPEN0_TIMEN     0x02
 #define WAKEUPEN0_MAGICEN   0x01
 
-//
-// Bits in WAKEUPEN1
-//
+/* Bits in WAKEUPEN1 */
 #define WAKEUPEN1_128_3     0x08
 #define WAKEUPEN1_128_2     0x04
 #define WAKEUPEN1_128_1     0x02
 #define WAKEUPEN1_128_0     0x01
 
-//
-// Bits in WAKEUPSR0
-//
+/* Bits in WAKEUPSR0 */
 #define WAKEUPSR0_DIRPKT    0x10
 #define WAKEUPSR0_LINKOFF   0x08
 #define WAKEUPSR0_ATIMEN    0x04
 #define WAKEUPSR0_TIMEN     0x02
 #define WAKEUPSR0_MAGICEN   0x01
 
-//
-// Bits in WAKEUPSR1
-//
+/* Bits in WAKEUPSR1 */
 #define WAKEUPSR1_128_3     0x08
 #define WAKEUPSR1_128_2     0x04
 #define WAKEUPSR1_128_1     0x02
 #define WAKEUPSR1_128_0     0x01
 
-//
-// Bits in the MAC_REG_GPIOCTL register
-//
-#define GPIO0_MD            0x01        //
-#define GPIO0_DATA          0x02        //
-#define GPIO0_INTMD         0x04        //
-#define GPIO1_MD            0x10        //
-#define GPIO1_DATA          0x20        //
+/* Bits in the MAC_REG_GPIOCTL register */
+#define GPIO0_MD            0x01
+#define GPIO0_DATA          0x02
+#define GPIO0_INTMD         0x04
+#define GPIO1_MD            0x10
+#define GPIO1_DATA          0x20
 
-//
-// Bits in the MSRCTL register
-//
+/* Bits in the MSRCTL register */
 #define MSRCTL_FINISH       0x80
 #define MSRCTL_READY        0x40
 #define MSRCTL_RADARDETECT  0x20
@@ -562,28 +502,27 @@
 #define MSRCTL_QUIETRPT     0x04
 #define MSRCTL_QUIETINT     0x02
 #define MSRCTL_QUIETEN      0x01
-//
-// Bits in the MSRCTL1 register
-//
+
+/* Bits in the MSRCTL1 register */
 #define MSRCTL1_TXPWR       0x08
 #define MSRCTL1_CSAPAREN    0x04
 #define MSRCTL1_TXPAUSE     0x01
 
-// Loopback mode
-#define MAC_LB_EXT          0x02        //
-#define MAC_LB_INTERNAL     0x01        //
-#define MAC_LB_NONE         0x00        //
+/* Loopback mode */
+#define MAC_LB_EXT          0x02
+#define MAC_LB_INTERNAL     0x01
+#define MAC_LB_NONE         0x00
 
 #define Default_BI              0x200
 
-// MiscFIFO Offset
+/* MiscFIFO Offset */
 #define MISCFIFO_KEYETRY0       32
 #define MISCFIFO_KEYENTRYSIZE   22
 #define MISCFIFO_SYNINFO_IDX    10
 #define MISCFIFO_SYNDATA_IDX    11
 #define MISCFIFO_SYNDATASIZE    21
 
-// enabled mask value of irq
+/* enabled mask value of irq */
 #define IMR_MASK_VALUE     (IMR_SOFTTIMER1 |	\
 			    IMR_RXDMA1 |	\
 			    IMR_RXNOBUF |	\
@@ -599,15 +538,13 @@
 			    IMR_AC0DMA |	\
 			    IMR_TXDMA0)
 
-// max time out delay time
-#define W_MAX_TIMEOUT       0xFFF0U     //
+/* max time out delay time */
+#define W_MAX_TIMEOUT       0xFFF0U
 
-// wait time within loop
-#define CB_DELAY_LOOP_WAIT  10          // 10ms
+/* wait time within loop */
+#define CB_DELAY_LOOP_WAIT  10 /* 10ms */
 
-//
-// revision id
-//
+/* revision id */
 #define REV_ID_VT3253_A0    0x00
 #define REV_ID_VT3253_A1    0x01
 #define REV_ID_VT3253_B0    0x08
@@ -691,12 +628,12 @@
 	VNSvInPortD(dwIoBase + MAC_REG_ATIMDMAPTR,		\
 		    (unsigned long *)pdwCurrDescAddr)
 
-// set the chip with current BCN tx descriptor address
+/* set the chip with current BCN tx descriptor address */
 #define MACvSetCurrBCNTxDescAddr(dwIoBase, dwCurrDescAddr)	\
 	VNSvOutPortD(dwIoBase + MAC_REG_BCNDMAPTR,		\
 		     dwCurrDescAddr)
 
-// set the chip with current BCN length
+/* set the chip with current BCN length */
 #define MACvSetCurrBCNLength(dwIoBase, wCurrBCNLength)		\
 	VNSvOutPortW(dwIoBase + MAC_REG_BCNDMACTL+2,		\
 		     wCurrBCNLength)
@@ -888,7 +825,7 @@
 	VNSvOutPortB(dwIoBase + MAC_REG_PAGE1SEL, 1)
 
 #define MACvReadMIBCounter(dwIoBase, pdwCounter)			\
-	VNSvInPortD(dwIoBase + MAC_REG_MIBCNTR , pdwCounter)
+	VNSvInPortD(dwIoBase + MAC_REG_MIBCNTR, pdwCounter)
 
 #define MACvPwrEvntDisable(dwIoBase)					\
 	VNSvOutPortW(dwIoBase + MAC_REG_WAKEUPEN0, 0x0000)
@@ -896,7 +833,7 @@
 #define MACvEnableProtectMD(dwIoBase)					\
 do {									\
 	unsigned long dwOrgValue;					\
-	VNSvInPortD(dwIoBase + MAC_REG_ENCFG , &dwOrgValue);		\
+	VNSvInPortD(dwIoBase + MAC_REG_ENCFG, &dwOrgValue);		\
 	dwOrgValue = dwOrgValue | EnCFG_ProtectMd;			\
 	VNSvOutPortD(dwIoBase + MAC_REG_ENCFG, dwOrgValue);		\
 } while (0)
@@ -904,7 +841,7 @@
 #define MACvDisableProtectMD(dwIoBase)					\
 do {									\
 	unsigned long dwOrgValue;					\
-	VNSvInPortD(dwIoBase + MAC_REG_ENCFG , &dwOrgValue);		\
+	VNSvInPortD(dwIoBase + MAC_REG_ENCFG, &dwOrgValue);		\
 	dwOrgValue = dwOrgValue & ~EnCFG_ProtectMd;			\
 	VNSvOutPortD(dwIoBase + MAC_REG_ENCFG, dwOrgValue);		\
 } while (0)
@@ -912,7 +849,7 @@
 #define MACvEnableBarkerPreambleMd(dwIoBase)				\
 do {									\
 	unsigned long dwOrgValue;					\
-	VNSvInPortD(dwIoBase + MAC_REG_ENCFG , &dwOrgValue);		\
+	VNSvInPortD(dwIoBase + MAC_REG_ENCFG, &dwOrgValue);		\
 	dwOrgValue = dwOrgValue | EnCFG_BarkerPream;			\
 	VNSvOutPortD(dwIoBase + MAC_REG_ENCFG, dwOrgValue);		\
 } while (0)
@@ -920,7 +857,7 @@
 #define MACvDisableBarkerPreambleMd(dwIoBase)				\
 do {									\
 	unsigned long dwOrgValue;					\
-	VNSvInPortD(dwIoBase + MAC_REG_ENCFG , &dwOrgValue);		\
+	VNSvInPortD(dwIoBase + MAC_REG_ENCFG, &dwOrgValue);		\
 	dwOrgValue = dwOrgValue & ~EnCFG_BarkerPream;			\
 	VNSvOutPortD(dwIoBase + MAC_REG_ENCFG, dwOrgValue);		\
 } while (0)
@@ -928,7 +865,7 @@
 #define MACvSetBBType(dwIoBase, byTyp)					\
 do {									\
 	unsigned long dwOrgValue;					\
-	VNSvInPortD(dwIoBase + MAC_REG_ENCFG , &dwOrgValue);		\
+	VNSvInPortD(dwIoBase + MAC_REG_ENCFG, &dwOrgValue);		\
 	dwOrgValue = dwOrgValue & ~EnCFG_BBType_MASK;			\
 	dwOrgValue = dwOrgValue | (unsigned long)byTyp;			\
 	VNSvOutPortD(dwIoBase + MAC_REG_ENCFG, dwOrgValue);		\
@@ -953,15 +890,18 @@
 #define MACvSetRFLE_LatchBase(dwIoBase)                                 \
 	MACvWordRegBitsOn(dwIoBase, MAC_REG_SOFTPWRCTL, SOFTPWRCTL_RFLEOPT)
 
-bool MACbIsRegBitsOn(void __iomem *dwIoBase, unsigned char byRegOfs, unsigned char byTestBits);
-bool MACbIsRegBitsOff(void __iomem *dwIoBase, unsigned char byRegOfs, unsigned char byTestBits);
+bool MACbIsRegBitsOn(void __iomem *dwIoBase, unsigned char byRegOfs,
+		     unsigned char byTestBits);
+bool MACbIsRegBitsOff(void __iomem *dwIoBase, unsigned char byRegOfs,
+		      unsigned char byTestBits);
 
 bool MACbIsIntDisable(void __iomem *dwIoBase);
 
 void MACvSetShortRetryLimit(void __iomem *dwIoBase, unsigned char byRetryLimit);
 
 void MACvSetLongRetryLimit(void __iomem *dwIoBase, unsigned char byRetryLimit);
-void MACvGetLongRetryLimit(void __iomem *dwIoBase, unsigned char *pbyRetryLimit);
+void MACvGetLongRetryLimit(void __iomem *dwIoBase,
+			   unsigned char *pbyRetryLimit);
 
 void MACvSetLoopbackMode(void __iomem *dwIoBase, unsigned char byLoopbackMode);
 
@@ -975,22 +915,32 @@
 bool MACbSafeStop(void __iomem *dwIoBase);
 bool MACbShutdown(void __iomem *dwIoBase);
 void MACvInitialize(void __iomem *dwIoBase);
-void MACvSetCurrRx0DescAddr(void __iomem *dwIoBase, unsigned long dwCurrDescAddr);
-void MACvSetCurrRx1DescAddr(void __iomem *dwIoBase, unsigned long dwCurrDescAddr);
-void MACvSetCurrTXDescAddr(int iTxType, void __iomem *dwIoBase, unsigned long dwCurrDescAddr);
-void MACvSetCurrTx0DescAddrEx(void __iomem *dwIoBase, unsigned long dwCurrDescAddr);
-void MACvSetCurrAC0DescAddrEx(void __iomem *dwIoBase, unsigned long dwCurrDescAddr);
-void MACvSetCurrSyncDescAddrEx(void __iomem *dwIoBase, unsigned long dwCurrDescAddr);
-void MACvSetCurrATIMDescAddrEx(void __iomem *dwIoBase, unsigned long dwCurrDescAddr);
+void MACvSetCurrRx0DescAddr(void __iomem *dwIoBase,
+			    unsigned long dwCurrDescAddr);
+void MACvSetCurrRx1DescAddr(void __iomem *dwIoBase,
+			    unsigned long dwCurrDescAddr);
+void MACvSetCurrTXDescAddr(int iTxType, void __iomem *dwIoBase,
+			   unsigned long dwCurrDescAddr);
+void MACvSetCurrTx0DescAddrEx(void __iomem *dwIoBase,
+			      unsigned long dwCurrDescAddr);
+void MACvSetCurrAC0DescAddrEx(void __iomem *dwIoBase,
+			      unsigned long dwCurrDescAddr);
+void MACvSetCurrSyncDescAddrEx(void __iomem *dwIoBase,
+			       unsigned long dwCurrDescAddr);
+void MACvSetCurrATIMDescAddrEx(void __iomem *dwIoBase,
+			       unsigned long dwCurrDescAddr);
 void MACvTimer0MicroSDelay(void __iomem *dwIoBase, unsigned int uDelay);
 void MACvOneShotTimer1MicroSec(void __iomem *dwIoBase, unsigned int uDelayTime);
 
-void MACvSetMISCFifo(void __iomem *dwIoBase, unsigned short wOffset, unsigned long dwData);
+void MACvSetMISCFifo(void __iomem *dwIoBase, unsigned short wOffset,
+		     unsigned long dwData);
 
 bool MACbPSWakeup(void __iomem *dwIoBase);
 
-void MACvSetKeyEntry(void __iomem *dwIoBase, unsigned short wKeyCtl, unsigned int uEntryIdx,
-		     unsigned int uKeyIdx, unsigned char *pbyAddr, u32 *pdwKey, unsigned char byLocalID);
+void MACvSetKeyEntry(void __iomem *dwIoBase, unsigned short wKeyCtl,
+		     unsigned int uEntryIdx, unsigned int uKeyIdx,
+		     unsigned char *pbyAddr, u32 *pdwKey,
+		     unsigned char byLocalID);
 void MACvDisableKeyEntry(void __iomem *dwIoBase, unsigned int uEntryIdx);
 
-#endif // __MAC_H__
+#endif /* __MAC_H__ */
diff --git a/drivers/staging/vt6655/power.c b/drivers/staging/vt6655/power.c
index e826f07..be3c4e9 100644
--- a/drivers/staging/vt6655/power.c
+++ b/drivers/staging/vt6655/power.c
@@ -71,33 +71,33 @@
 	struct vnt_private *pDevice = hDeviceContext;
 	u16 wAID = pDevice->current_aid | BIT(14) | BIT(15);
 
-	// set period of power up before TBTT
+	/* set period of power up before TBTT */
 	VNSvOutPortW(pDevice->PortOffset + MAC_REG_PWBT, C_PWBT);
 	if (pDevice->op_mode != NL80211_IFTYPE_ADHOC) {
-		// set AID
+		/* set AID */
 		VNSvOutPortW(pDevice->PortOffset + MAC_REG_AIDATIM, wAID);
 	} else {
-		// set ATIM Window
+		/* set ATIM Window */
 #if 0 /* TODO atim window */
 		MACvWriteATIMW(pDevice->PortOffset, pMgmt->wCurrATIMWindow);
 #endif
 	}
-	// Set AutoSleep
+	/* Set AutoSleep */
 	MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCFG, PSCFG_AUTOSLEEP);
-	// Set HWUTSF
+	/* Set HWUTSF */
 	MACvRegBitsOn(pDevice->PortOffset, MAC_REG_TFTCTL, TFTCTL_HWUTSF);
 
 	if (wListenInterval >= 2) {
-		// clear always listen beacon
+		/* clear always listen beacon */
 		MACvRegBitsOff(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN);
-		// first time set listen next beacon
+		/* first time set listen next beacon */
 		MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_LNBCN);
 	} else {
-		// always listen beacon
+		/* always listen beacon */
 		MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN);
 	}
 
-	// enable power saving hw function
+	/* enable power saving hw function */
 	MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PSEN);
 	pDevice->bEnablePSMode = true;
 
@@ -122,13 +122,13 @@
 {
 	struct vnt_private *pDevice = hDeviceContext;
 
-	// disable power saving hw function
+	/* disable power saving hw function */
 	MACbPSWakeup(pDevice->PortOffset);
-	//clear AutoSleep
+	/* clear AutoSleep */
 	MACvRegBitsOff(pDevice->PortOffset, MAC_REG_PSCFG, PSCFG_AUTOSLEEP);
-	//clear HWUTSF
+	/* clear HWUTSF */
 	MACvRegBitsOff(pDevice->PortOffset, MAC_REG_TFTCTL, TFTCTL_HWUTSF);
-	// set always listen beacon
+	/* set always listen beacon */
 	MACvRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_ALBCN);
 
 	pDevice->bEnablePSMode = false;
diff --git a/drivers/staging/vt6655/rxtx.c b/drivers/staging/vt6655/rxtx.c
index b5b0155..9cade85 100644
--- a/drivers/staging/vt6655/rxtx.c
+++ b/drivers/staging/vt6655/rxtx.c
@@ -205,7 +205,7 @@
 	unsigned short wCurrentRate
 )
 {
-	unsigned int uRrvTime  , uRTSTime, uCTSTime, uAckTime, uDataTime;
+	unsigned int uRrvTime, uRTSTime, uCTSTime, uAckTime, uDataTime;
 
 	uRrvTime = uRTSTime = uCTSTime = uAckTime = uDataTime = 0;
 
diff --git a/drivers/staging/vt6655/upc.h b/drivers/staging/vt6655/upc.h
index c53703a..cc63dc8 100644
--- a/drivers/staging/vt6655/upc.h
+++ b/drivers/staging/vt6655/upc.h
@@ -33,9 +33,9 @@
 
 /*---------------------  Export Definitions -------------------------*/
 
-//
-//  For memory mapped IO
-//
+
+/* For memory mapped IO */
+
 
 #define VNSvInPortB(dwIOAddress, pbyData)				\
 do {									\
@@ -86,4 +86,4 @@
 
 /*---------------------  Export Functions  --------------------------*/
 
-#endif // __UPC_H__
+#endif /* __UPC_H__ */
diff --git a/drivers/staging/vt6656/card.c b/drivers/staging/vt6656/card.c
index 9340f15..67ff13f 100644
--- a/drivers/staging/vt6656/card.c
+++ b/drivers/staging/vt6656/card.c
@@ -78,7 +78,7 @@
 	/* Set Channel[7] = 0 to tell H/W channel is changing now. */
 	vnt_mac_reg_bits_off(priv, MAC_REG_CHANNEL, 0xb0);
 
-	vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNLE,
+	vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNEL,
 					connection_channel, 0, 0, NULL);
 
 	vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_CHANNEL,
diff --git a/drivers/staging/vt6656/device.h b/drivers/staging/vt6656/device.h
index 5a7ca52..f71d59f 100644
--- a/drivers/staging/vt6656/device.h
+++ b/drivers/staging/vt6656/device.h
@@ -160,7 +160,7 @@
 #define MESSAGE_TYPE_CLRKEYENTRY	0x9
 #define MESSAGE_TYPE_WRITE_MISCFF	0xa
 #define MESSAGE_TYPE_SET_ANTMD		0xb
-#define MESSAGE_TYPE_SELECT_CHANNLE	0xc
+#define MESSAGE_TYPE_SELECT_CHANNEL	0xc
 #define MESSAGE_TYPE_SET_TSFTBTT	0xd
 #define MESSAGE_TYPE_SET_SSTIFS		0xe
 #define MESSAGE_TYPE_CHANGE_BBTYPE	0xf
@@ -307,8 +307,8 @@
 
 	struct vnt_cmd_card_init init_command;
 	struct vnt_rsp_card_init init_response;
-	u8 current_net_addr[ETH_ALEN];
-	u8 permanent_net_addr[ETH_ALEN];
+	u8 current_net_addr[ETH_ALEN] __aligned(2);
+	u8 permanent_net_addr[ETH_ALEN] __aligned(2);
 
 	u8 exist_sw_net_addr;
 
diff --git a/drivers/staging/vt6656/dpc.h b/drivers/staging/vt6656/dpc.h
index fab195f..95e0e83 100644
--- a/drivers/staging/vt6656/dpc.h
+++ b/drivers/staging/vt6656/dpc.h
@@ -32,6 +32,6 @@
 #include "device.h"
 
 int vnt_rx_data(struct vnt_private *, struct vnt_rcb *,
-	unsigned long bytes_recieved);
+	unsigned long bytes_received);
 
 #endif /* __RXTX_H__ */
diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index b95d5b1..71adc1f 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -34,6 +34,7 @@
  */
 #undef __NO_VERSION__
 
+#include <linux/etherdevice.h>
 #include <linux/file.h>
 #include "device.h"
 #include "card.h"
@@ -319,7 +320,7 @@
 
 	/* get permanent network address */
 	memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
-	memcpy(priv->current_net_addr, priv->permanent_net_addr, ETH_ALEN);
+	ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
 
 	/* if exist SW network address, use it */
 	dev_dbg(&priv->usb->dev, "Network address = %pM\n",
diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c
index ea5140a..bb6a4d4 100644
--- a/drivers/staging/vt6656/rxtx.c
+++ b/drivers/staging/vt6656/rxtx.c
@@ -36,6 +36,7 @@
  *
  */
 
+#include <linux/etherdevice.h>
 #include "device.h"
 #include "rxtx.h"
 #include "card.h"
@@ -55,7 +56,7 @@
 
 static const u16 vnt_fb_opt1[2][5] = {
 	{RATE_12M, RATE_18M, RATE_24M, RATE_24M, RATE_36M}, /* fallback_rate0 */
-	{RATE_6M , RATE_6M,  RATE_12M, RATE_12M, RATE_18M}, /* fallback_rate1 */
+	{RATE_6M,  RATE_6M,  RATE_12M, RATE_12M, RATE_18M}, /* fallback_rate1 */
 };
 
 #define RTSDUR_BB       0
@@ -392,8 +393,8 @@
 	rts->frame_control =
 		cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 
-	memcpy(rts->ra, hdr->addr1, ETH_ALEN);
-	memcpy(rts->ta, hdr->addr2, ETH_ALEN);
+	ether_addr_copy(rts->ra, hdr->addr1);
+	ether_addr_copy(rts->ta, hdr->addr2);
 
 	return 0;
 }
@@ -552,7 +553,7 @@
 		buf->data.frame_control =
 			cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 
-		memcpy(buf->data.ra, priv->current_net_addr, ETH_ALEN);
+		ether_addr_copy(buf->data.ra, priv->current_net_addr);
 
 		return vnt_rxtx_datahead_g_fb(tx_context, &buf->data_head);
 	} else {
@@ -570,12 +571,10 @@
 		buf->data.frame_control =
 			cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 
-		memcpy(buf->data.ra, priv->current_net_addr, ETH_ALEN);
+		ether_addr_copy(buf->data.ra, priv->current_net_addr);
 
 		return vnt_rxtx_datahead_g(tx_context, &buf->data_head);
 	}
-
-	return 0;
 }
 
 static u16 vnt_rxtx_rts(struct vnt_usb_send_context *tx_context,
diff --git a/drivers/staging/wlan-ng/hfa384x.h b/drivers/staging/wlan-ng/hfa384x.h
index 20d146b..5b7b408 100644
--- a/drivers/staging/wlan-ng/hfa384x.h
+++ b/drivers/staging/wlan-ng/hfa384x.h
@@ -1268,7 +1268,7 @@
 	hfa384x_downloadbuffer_t bufinfo;
 	u16 dltimeout;
 
-	int scanflag;		/* to signal scan comlete */
+	int scanflag;		/* to signal scan complete */
 	int join_ap;		/* are we joined to a specific ap */
 	int join_retries;	/* number of join retries till we fail */
 	hfa384x_JoinRequest_data_t joinreq;	/* join request saved data */
diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c
index 55d2f56..2245339 100644
--- a/drivers/staging/wlan-ng/hfa384x_usb.c
+++ b/drivers/staging/wlan-ng/hfa384x_usb.c
@@ -382,7 +382,7 @@
 *
 * Arguments:
 *	hw		device struct
-*	tx_urb		URB of data for tranmission
+*	tx_urb		URB of data for transmission
 *	memflags	memory allocation flags
 *
 * Returns:
@@ -2391,7 +2391,7 @@
 *	0		success
 *	>0		f/w reported error - f/w status code
 *	<0		driver reported error
-*	-ETIMEDOUT	timout waiting for the cmd regs to become
+*	-ETIMEDOUT	timeout waiting for the cmd regs to become
 *			available, or waiting for the control reg
 *			to indicate the Aux port is enabled.
 *	-ENODATA	the buffer does NOT contain a valid PDA.
@@ -4123,12 +4123,11 @@
 			pr_debug("Encountered unknown PDR#=0x%04x, assuming it's ok.\n",
 				 pdrcode);
 			return 1;
-		} else {
-			/* bad code */
-			pr_debug("Encountered unknown PDR#=0x%04x, (>=0x1000), assuming it's bad.\n",
-				 pdrcode);
-			return 0;
 		}
+		break;
 	}
-	return 0;		/* avoid compiler warnings */
+	/* bad code */
+	pr_debug("Encountered unknown PDR#=0x%04x, (>=0x1000), assuming it's bad.\n",
+		 pdrcode);
+	return 0;
 }
diff --git a/drivers/staging/wlan-ng/p80211conv.c b/drivers/staging/wlan-ng/p80211conv.c
index 7eaaf9a6..bd69e8c 100644
--- a/drivers/staging/wlan-ng/p80211conv.c
+++ b/drivers/staging/wlan-ng/p80211conv.c
@@ -511,7 +511,7 @@
 * protocol.
 *
 * Arguments:
-*	proto	protocl number (in host order) to search for.
+*	proto	protocol number (in host order) to search for.
 *
 * Returns:
 *	1 - if the table is empty or a match is found.
diff --git a/drivers/staging/wlan-ng/p80211req.c b/drivers/staging/wlan-ng/p80211req.c
index 7221379..4b84b56 100644
--- a/drivers/staging/wlan-ng/p80211req.c
+++ b/drivers/staging/wlan-ng/p80211req.c
@@ -80,7 +80,7 @@
 /*----------------------------------------------------------------
 * p80211req_dorequest
 *
-* Handles an MLME reqest/confirm message.
+* Handles an MLME request/confirm message.
 *
 * Arguments:
 *	wlandev		WLAN device struct
diff --git a/drivers/staging/wlan-ng/prism2mgmt.h b/drivers/staging/wlan-ng/prism2mgmt.h
index b62fdcb..16f1239 100644
--- a/drivers/staging/wlan-ng/prism2mgmt.h
+++ b/drivers/staging/wlan-ng/prism2mgmt.h
@@ -45,7 +45,7 @@
 * --------------------------------------------------------------------
 *
 * This file contains the constants and data structures for interaction
-* with the hfa384x Wireless LAN (WLAN) Media Access Contoller (MAC).
+* with the hfa384x Wireless LAN (WLAN) Media Access Controller (MAC).
 * The hfa384x is a portion of the Harris PRISM(tm) WLAN chipset.
 *
 * [Implementation and usage notes]
diff --git a/drivers/staging/wlan-ng/prism2sta.c b/drivers/staging/wlan-ng/prism2sta.c
index df577df..10ad24a 100644
--- a/drivers/staging/wlan-ng/prism2sta.c
+++ b/drivers/staging/wlan-ng/prism2sta.c
@@ -199,7 +199,7 @@
 /*----------------------------------------------------------------
 * prism2sta_reset
 *
-* Not currently implented.
+* Currently not implemented.
 *
 * Arguments:
 *	wlandev		wlan device structure
@@ -662,7 +662,7 @@
 		       "ident:  ap f/w: id=0x%02x %d.%d.%d\n",
 		       hw->ident_sta_fw.id, hw->ident_sta_fw.major,
 		       hw->ident_sta_fw.minor, hw->ident_sta_fw.variant);
-		netdev_err(wlandev->netdev, "Unsupported Tertiary AP firmeare loaded!\n");
+		netdev_err(wlandev->netdev, "Unsupported Tertiary AP firmware loaded!\n");
 		goto failed;
 	}
 
diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
index 709d49e..74a8db8 100644
--- a/drivers/staging/xgifb/XGI_main_26.c
+++ b/drivers/staging/xgifb/XGI_main_26.c
@@ -952,7 +952,7 @@
 	} pr_debug("var->pixclock=%d, htotal=%d, vtotal=%d\n",
 			var->pixclock, htotal, vtotal);
 
-	if (var->pixclock && htotal && vtotal) {
+	if (var->pixclock) {
 		drate = 1000000000 / var->pixclock;
 		hrate = (drate * 1000) / htotal;
 		xgifb_info->refresh_rate = (unsigned int) (hrate * 2