Merge remote-tracking branches 'regulator/topic/tps6524x' and 'regulator/topic/twl' into regulator-next
diff --git a/Documentation/devicetree/bindings/regulator/twl-regulator.txt b/Documentation/devicetree/bindings/regulator/twl-regulator.txt
index 75b0c16..74a91c4 100644
--- a/Documentation/devicetree/bindings/regulator/twl-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/twl-regulator.txt
@@ -57,6 +57,12 @@
Optional properties:
- Any optional property defined in bindings/regulator/regulator.txt
+For twl4030 regulators/LDOs:
+ - regulator-initial-mode:
+ - 0x08 - Sleep mode, the nominal output voltage is maintained with low power
+ consumption with low load current capability.
+ - 0x0e - Active mode, the regulator can deliver its nominal output voltage
+ with full-load current capability.
Example:
diff --git a/drivers/regulator/tps6524x-regulator.c b/drivers/regulator/tps6524x-regulator.c
index 9d6ea3a..67cac26 100644
--- a/drivers/regulator/tps6524x-regulator.c
+++ b/drivers/regulator/tps6524x-regulator.c
@@ -600,7 +600,7 @@
memset(hw, 0, sizeof(struct tps6524x));
hw->dev = dev;
- hw->spi = spi_dev_get(spi);
+ hw->spi = spi;
mutex_init(&hw->lock);
for (i = 0; i < N_REGULATORS; i++, info++, init_data++) {
diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c
index 955a6fb..faeb5ee 100644
--- a/drivers/regulator/twl-regulator.c
+++ b/drivers/regulator/twl-regulator.c
@@ -21,7 +21,7 @@
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/i2c/twl.h>
-
+#include <linux/delay.h>
/*
* The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
@@ -188,6 +188,74 @@
return grp && (val == TWL6030_CFG_STATE_ON);
}
+#define PB_I2C_BUSY BIT(0)
+#define PB_I2C_BWEN BIT(1)
+
+/* Wait until buffer empty/ready to send a word on power bus. */
+static int twl4030_wait_pb_ready(void)
+{
+
+ int ret;
+ int timeout = 10;
+ u8 val;
+
+ do {
+ ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
+ TWL4030_PM_MASTER_PB_CFG);
+ if (ret < 0)
+ return ret;
+
+ if (!(val & PB_I2C_BUSY))
+ return 0;
+
+ mdelay(1);
+ timeout--;
+ } while (timeout);
+
+ return -ETIMEDOUT;
+}
+
+/* Send a word over the powerbus */
+static int twl4030_send_pb_msg(unsigned msg)
+{
+ u8 val;
+ int ret;
+
+ /* save powerbus configuration */
+ ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
+ TWL4030_PM_MASTER_PB_CFG);
+ if (ret < 0)
+ return ret;
+
+ /* Enable i2c access to powerbus */
+ ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val | PB_I2C_BWEN,
+ TWL4030_PM_MASTER_PB_CFG);
+ if (ret < 0)
+ return ret;
+
+ ret = twl4030_wait_pb_ready();
+ if (ret < 0)
+ return ret;
+
+ ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg >> 8,
+ TWL4030_PM_MASTER_PB_WORD_MSB);
+ if (ret < 0)
+ return ret;
+
+ ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg & 0xff,
+ TWL4030_PM_MASTER_PB_WORD_LSB);
+ if (ret < 0)
+ return ret;
+
+ ret = twl4030_wait_pb_ready();
+ if (ret < 0)
+ return ret;
+
+ /* Restore powerbus configuration */
+ return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val,
+ TWL4030_PM_MASTER_PB_CFG);
+}
+
static int twl4030reg_enable(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
@@ -303,7 +371,6 @@
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
unsigned message;
- int status;
/* We can only set the mode through state machine commands... */
switch (mode) {
@@ -317,20 +384,19 @@
return -EINVAL;
}
- /* Ensure the resource is associated with some group */
- status = twlreg_grp(rdev);
- if (status < 0)
- return status;
- if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
- return -EACCES;
+ return twl4030_send_pb_msg(message);
+}
- status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
- message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
- if (status < 0)
- return status;
-
- return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
- message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
+static inline unsigned int twl4030reg_map_mode(unsigned int mode)
+{
+ switch (mode) {
+ case RES_STATE_ACTIVE:
+ return REGULATOR_MODE_NORMAL;
+ case RES_STATE_SLEEP:
+ return REGULATOR_MODE_STANDBY;
+ default:
+ return -EINVAL;
+ }
}
static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
@@ -835,10 +901,11 @@
#define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
remap_conf) \
TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
- remap_conf, TWL4030, twl4030fixed_ops)
+ remap_conf, TWL4030, twl4030fixed_ops, \
+ twl4030reg_map_mode)
#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
- 0x0, TWL6030, twl6030fixed_ops)
+ 0x0, TWL6030, twl6030fixed_ops, 0x0)
#define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
static const struct twlreg_info TWL4030_INFO_##label = { \
@@ -855,6 +922,7 @@
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.enable_time = turnon_delay, \
+ .of_map_mode = twl4030reg_map_mode, \
}, \
}
@@ -870,6 +938,7 @@
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.enable_time = turnon_delay, \
+ .of_map_mode = twl4030reg_map_mode, \
}, \
}
@@ -915,7 +984,7 @@
}
#define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
- family, operations) \
+ family, operations, map_mode) \
static const struct twlreg_info TWLFIXED_INFO_##label = { \
.base = offset, \
.id = num, \
@@ -930,6 +999,7 @@
.owner = THIS_MODULE, \
.min_uV = mVolts * 1000, \
.enable_time = turnon_delay, \
+ .of_map_mode = map_mode, \
}, \
}
