| /* |
| * linux/drivers/video/sa1100fb.c |
| * |
| * Copyright (C) 1999 Eric A. Thomas |
| * Based on acornfb.c Copyright (C) Russell King. |
| * |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file COPYING in the main directory of this archive for |
| * more details. |
| * |
| * StrongARM 1100 LCD Controller Frame Buffer Driver |
| * |
| * Please direct your questions and comments on this driver to the following |
| * email address: |
| * |
| * linux-arm-kernel@lists.arm.linux.org.uk |
| * |
| * Clean patches should be sent to the ARM Linux Patch System. Please see the |
| * following web page for more information: |
| * |
| * http://www.arm.linux.org.uk/developer/patches/info.shtml |
| * |
| * Thank you. |
| * |
| * Known problems: |
| * - With the Neponset plugged into an Assabet, LCD powerdown |
| * doesn't work (LCD stays powered up). Therefore we shouldn't |
| * blank the screen. |
| * - We don't limit the CPU clock rate nor the mode selection |
| * according to the available SDRAM bandwidth. |
| * |
| * Other notes: |
| * - Linear grayscale palettes and the kernel. |
| * Such code does not belong in the kernel. The kernel frame buffer |
| * drivers do not expect a linear colourmap, but a colourmap based on |
| * the VT100 standard mapping. |
| * |
| * If your _userspace_ requires a linear colourmap, then the setup of |
| * such a colourmap belongs _in userspace_, not in the kernel. Code |
| * to set the colourmap correctly from user space has been sent to |
| * David Neuer. It's around 8 lines of C code, plus another 4 to |
| * detect if we are using grayscale. |
| * |
| * Code Status: |
| * 1999/04/01: |
| * - Driver appears to be working for Brutus 320x200x8bpp mode. Other |
| * resolutions are working, but only the 8bpp mode is supported. |
| * Changes need to be made to the palette encode and decode routines |
| * to support 4 and 16 bpp modes. |
| * Driver is not designed to be a module. The FrameBuffer is statically |
| * allocated since dynamic allocation of a 300k buffer cannot be |
| * guaranteed. |
| * |
| * 1999/06/17: |
| * - FrameBuffer memory is now allocated at run-time when the |
| * driver is initialized. |
| * |
| * 2000/04/10: Nicolas Pitre <nico@cam.org> |
| * - Big cleanup for dynamic selection of machine type at run time. |
| * |
| * 2000/07/19: Jamey Hicks <jamey@crl.dec.com> |
| * - Support for Bitsy aka Compaq iPAQ H3600 added. |
| * |
| * 2000/08/07: Tak-Shing Chan <tchan.rd@idthk.com> |
| * Jeff Sutherland <jsutherland@accelent.com> |
| * - Resolved an issue caused by a change made to the Assabet's PLD |
| * earlier this year which broke the framebuffer driver for newer |
| * Phase 4 Assabets. Some other parameters were changed to optimize |
| * for the Sharp display. |
| * |
| * 2000/08/09: Kunihiko IMAI <imai@vasara.co.jp> |
| * - XP860 support added |
| * |
| * 2000/08/19: Mark Huang <mhuang@livetoy.com> |
| * - Allows standard options to be passed on the kernel command line |
| * for most common passive displays. |
| * |
| * 2000/08/29: |
| * - s/save_flags_cli/local_irq_save/ |
| * - remove unneeded extra save_flags_cli in sa1100fb_enable_lcd_controller |
| * |
| * 2000/10/10: Erik Mouw <J.A.K.Mouw@its.tudelft.nl> |
| * - Updated LART stuff. Fixed some minor bugs. |
| * |
| * 2000/10/30: Murphy Chen <murphy@mail.dialogue.com.tw> |
| * - Pangolin support added |
| * |
| * 2000/10/31: Roman Jordan <jor@hoeft-wessel.de> |
| * - Huw Webpanel support added |
| * |
| * 2000/11/23: Eric Peng <ericpeng@coventive.com> |
| * - Freebird add |
| * |
| * 2001/02/07: Jamey Hicks <jamey.hicks@compaq.com> |
| * Cliff Brake <cbrake@accelent.com> |
| * - Added PM callback |
| * |
| * 2001/05/26: <rmk@arm.linux.org.uk> |
| * - Fix 16bpp so that (a) we use the right colours rather than some |
| * totally random colour depending on what was in page 0, and (b) |
| * we don't de-reference a NULL pointer. |
| * - remove duplicated implementation of consistent_alloc() |
| * - convert dma address types to dma_addr_t |
| * - remove unused 'montype' stuff |
| * - remove redundant zero inits of init_var after the initial |
| * memzero. |
| * - remove allow_modeset (acornfb idea does not belong here) |
| * |
| * 2001/05/28: <rmk@arm.linux.org.uk> |
| * - massive cleanup - move machine dependent data into structures |
| * - I've left various #warnings in - if you see one, and know |
| * the hardware concerned, please get in contact with me. |
| * |
| * 2001/05/31: <rmk@arm.linux.org.uk> |
| * - Fix LCCR1 HSW value, fix all machine type specifications to |
| * keep values in line. (Please check your machine type specs) |
| * |
| * 2001/06/10: <rmk@arm.linux.org.uk> |
| * - Fiddle with the LCD controller from task context only; mainly |
| * so that we can run with interrupts on, and sleep. |
| * - Convert #warnings into #errors. No pain, no gain. ;) |
| * |
| * 2001/06/14: <rmk@arm.linux.org.uk> |
| * - Make the palette BPS value for 12bpp come out correctly. |
| * - Take notice of "greyscale" on any colour depth. |
| * - Make truecolor visuals use the RGB channel encoding information. |
| * |
| * 2001/07/02: <rmk@arm.linux.org.uk> |
| * - Fix colourmap problems. |
| * |
| * 2001/07/13: <abraham@2d3d.co.za> |
| * - Added support for the ICP LCD-Kit01 on LART. This LCD is |
| * manufactured by Prime View, model no V16C6448AB |
| * |
| * 2001/07/23: <rmk@arm.linux.org.uk> |
| * - Hand merge version from handhelds.org CVS tree. See patch |
| * notes for 595/1 for more information. |
| * - Drop 12bpp (it's 16bpp with different colour register mappings). |
| * - This hardware can not do direct colour. Therefore we don't |
| * support it. |
| * |
| * 2001/07/27: <rmk@arm.linux.org.uk> |
| * - Halve YRES on dual scan LCDs. |
| * |
| * 2001/08/22: <rmk@arm.linux.org.uk> |
| * - Add b/w iPAQ pixclock value. |
| * |
| * 2001/10/12: <rmk@arm.linux.org.uk> |
| * - Add patch 681/1 and clean up stork definitions. |
| */ |
| |
| #include <linux/config.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/interrupt.h> |
| #include <linux/slab.h> |
| #include <linux/fb.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/init.h> |
| #include <linux/cpufreq.h> |
| |
| #include <asm/hardware.h> |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/mach-types.h> |
| #include <asm/uaccess.h> |
| #include <asm/arch/assabet.h> |
| |
| #include <video/fbcon.h> |
| #include <video/fbcon-mfb.h> |
| #include <video/fbcon-cfb4.h> |
| #include <video/fbcon-cfb8.h> |
| #include <video/fbcon-cfb16.h> |
| |
| /* |
| * enable this if your panel appears to have broken |
| */ |
| #undef CHECK_COMPAT |
| |
| /* |
| * debugging? |
| */ |
| #define DEBUG 0 |
| /* |
| * Complain if VAR is out of range. |
| */ |
| #define DEBUG_VAR 1 |
| |
| #undef ASSABET_PAL_VIDEO |
| |
| #include "sa1100fb.h" |
| |
| void (*sa1100fb_blank_helper)(int blank); |
| EXPORT_SYMBOL(sa1100fb_blank_helper); |
| |
| |
| #ifdef CHECK_COMPAT |
| static void |
| sa1100fb_check_shadow(struct sa1100fb_lcd_reg *new_regs, |
| struct fb_var_screeninfo *var, u_int pcd) |
| { |
| struct sa1100fb_lcd_reg shadow; |
| int different = 0; |
| |
| /* |
| * These machines are good machines! |
| */ |
| if (machine_is_assabet() || machine_is_h3600()) |
| return; |
| |
| /* |
| * The following ones are bad, bad, bad. |
| * Please make yours good! |
| */ |
| if (machine_is_pangolin()) { |
| DPRINTK("Configuring Pangolin LCD\n"); |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Color + LCCR0_LDM + |
| LCCR0_BAM + LCCR0_ERM + LCCR0_Act + |
| LCCR0_LtlEnd + LCCR0_DMADel(0); |
| shadow.lccr1 = |
| LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(64) + |
| LCCR1_BegLnDel(160) + LCCR1_EndLnDel(24); |
| shadow.lccr2 = |
| LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(7) + |
| LCCR2_BegFrmDel(7) + LCCR2_EndFrmDel(1); |
| shadow.lccr3 = |
| LCCR3_PixClkDiv(pcd) + LCCR3_HorSnchH + |
| LCCR3_VrtSnchH + LCCR3_PixFlEdg + LCCR3_OutEnH; |
| |
| DPRINTK("pcd = %x, PixCldDiv(pcd)=%x\n", |
| pcd, LCCR3_PixClkDiv(pcd)); |
| } |
| if (machine_is_freebird()) { |
| DPRINTK("Configuring Freebird LCD\n"); |
| #if 1 |
| shadow.lccr0 = 0x00000038; |
| shadow.lccr1 = 0x010108e0; |
| shadow.lccr2 = 0x0000053f; |
| shadow.lccr3 = 0x00000c20; |
| #else |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + |
| LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + LCCR0_Pas + |
| LCCR0_LtlEnd + LCCR0_DMADel(0); |
| /* Check ,Chester */ |
| shadow.lccr1 = |
| LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(5) + |
| LCCR1_BegLnDel(61) + LCCR1_EndLnDel(9); |
| /* Check ,Chester */ |
| shadow.lccr2 = |
| LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) + |
| LCCR2_BegFrmDel(3) + LCCR2_EndFrmDel(0); |
| /* Check ,Chester */ |
| shadow.lccr3 = |
| LCCR3_OutEnH + LCCR3_PixFlEdg + LCCR3_VrtSnchH + |
| LCCR3_HorSnchH + LCCR3_ACBsCntOff + |
| LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(pcd); |
| #endif |
| } |
| if (machine_is_brutus()) { |
| DPRINTK("Configuring Brutus LCD\n"); |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Pas + |
| LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + |
| LCCR0_DMADel(0); |
| shadow.lccr1 = |
| LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(3) + |
| LCCR1_BegLnDel(41) + LCCR1_EndLnDel(101); |
| shadow.lccr2 = |
| LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) + |
| LCCR2_BegFrmDel(0) + LCCR2_EndFrmDel(0); |
| shadow.lccr3 = |
| LCCR3_OutEnH + LCCR3_PixRsEdg + LCCR3_VrtSnchH + |
| LCCR3_HorSnchH + LCCR3_ACBsCntOff + |
| LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(44); |
| } |
| if (machine_is_huw_webpanel()) { |
| DPRINTK("Configuring HuW LCD\n"); |
| shadow.lccr0 = LCCR0_LEN + LCCR0_Dual + LCCR0_LDM; |
| shadow.lccr1 = LCCR1_DisWdth(var->xres) + |
| LCCR1_HorSnchWdth(3) + |
| LCCR1_BegLnDel(41) + LCCR1_EndLnDel(101); |
| shadow.lccr2 = 239 + LCCR2_VrtSnchWdth(1); |
| shadow.lccr3 = 8 + LCCR3_OutEnH + |
| LCCR3_PixRsEdg + LCCR3_VrtSnchH + |
| LCCR3_HorSnchH + LCCR3_ACBsCntOff + LCCR3_ACBsDiv(2); |
| } |
| if (machine_is_lart()) { |
| DPRINTK("Configuring LART LCD\n"); |
| #if defined LART_GREY_LCD |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Mono + LCCR0_Sngl + LCCR0_Pas + |
| LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + |
| LCCR0_DMADel(0); |
| shadow.lccr1 = |
| LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(1) + |
| LCCR1_BegLnDel(4) + LCCR1_EndLnDel(2); |
| shadow.lccr2 = |
| LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) + |
| LCCR2_BegFrmDel(0) + LCCR2_EndFrmDel(0); |
| shadow.lccr3 = |
| LCCR3_PixClkDiv(34) + LCCR3_ACBsDiv(512) + |
| LCCR3_ACBsCntOff + LCCR3_HorSnchH + LCCR3_VrtSnchH; |
| #endif |
| #if defined LART_COLOR_LCD |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act + |
| LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + |
| LCCR0_DMADel(0); |
| shadow.lccr1 = |
| LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(2) + |
| LCCR1_BegLnDel(69) + LCCR1_EndLnDel(8); |
| shadow.lccr2 = |
| LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(3) + |
| LCCR2_BegFrmDel(14) + LCCR2_EndFrmDel(4); |
| shadow.lccr3 = |
| LCCR3_PixClkDiv(34) + LCCR3_ACBsDiv(512) + |
| LCCR3_ACBsCntOff + LCCR3_HorSnchL + LCCR3_VrtSnchL + |
| LCCR3_PixFlEdg; |
| #endif |
| #if defined LART_VIDEO_OUT |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act + |
| LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + |
| LCCR0_DMADel(0); |
| shadow.lccr1 = |
| LCCR1_DisWdth(640) + LCCR1_HorSnchWdth(95) + |
| LCCR1_BegLnDel(40) + LCCR1_EndLnDel(24); |
| shadow.lccr2 = |
| LCCR2_DisHght(480) + LCCR2_VrtSnchWdth(2) + |
| LCCR2_BegFrmDel(32) + LCCR2_EndFrmDel(11); |
| shadow.lccr3 = |
| LCCR3_PixClkDiv(8) + LCCR3_ACBsDiv(512) + |
| LCCR3_ACBsCntOff + LCCR3_HorSnchH + LCCR3_VrtSnchH + |
| LCCR3_PixFlEdg + LCCR3_OutEnL; |
| #endif |
| } |
| if (machine_is_graphicsclient()) { |
| DPRINTK("Configuring GraphicsClient LCD\n"); |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act; |
| shadow.lccr1 = |
| LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(9) + |
| LCCR1_EndLnDel(54) + LCCR1_BegLnDel(54); |
| shadow.lccr2 = |
| LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(9) + |
| LCCR2_EndFrmDel(32) + LCCR2_BegFrmDel(24); |
| shadow.lccr3 = |
| LCCR3_PixClkDiv(10) + LCCR3_ACBsDiv(2) + |
| LCCR3_ACBsCntOff + LCCR3_HorSnchL + LCCR3_VrtSnchL; |
| } |
| if (machine_is_omnimeter()) { |
| DPRINTK("Configuring OMNI LCD\n"); |
| shadow.lccr0 = LCCR0_LEN | LCCR0_CMS | LCCR0_DPD; |
| shadow.lccr1 = |
| LCCR1_BegLnDel(10) + LCCR1_EndLnDel(10) + |
| LCCR1_HorSnchWdth(1) + LCCR1_DisWdth(var->xres); |
| shadow.lccr2 = LCCR2_DisHght(var->yres); |
| shadow.lccr3 = |
| LCCR3_ACBsDiv(0xFF) + LCCR3_PixClkDiv(44); |
| //jca (GetPCD(25) << LCD3_V_PCD); |
| } |
| if (machine_is_xp860()) { |
| DPRINTK("Configuring XP860 LCD\n"); |
| shadow.lccr0 = |
| LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act + |
| LCCR0_LtlEnd + LCCR0_LDM + LCCR0_ERM + LCCR0_DMADel(0); |
| shadow.lccr1 = |
| LCCR1_DisWdth(var->xres) + |
| LCCR1_HorSnchWdth(var->hsync_len) + |
| LCCR1_BegLnDel(var->left_margin) + |
| LCCR1_EndLnDel(var->right_margin); |
| shadow.lccr2 = |
| LCCR2_DisHght(var->yres) + |
| LCCR2_VrtSnchWdth(var->vsync_len) + |
| LCCR2_BegFrmDel(var->upper_margin) + |
| LCCR2_EndFrmDel(var->lower_margin); |
| shadow.lccr3 = |
| LCCR3_PixClkDiv(6) + LCCR3_HorSnchL + LCCR3_VrtSnchL; |
| } |
| |
| /* |
| * Ok, since we're calculating these values, we want to know |
| * if the calculation is correct. If you see any of these |
| * messages _PLEASE_ report the incident to me for diagnosis, |
| * including details about what was happening when the |
| * messages appeared. --rmk, 30 March 2001 |
| */ |
| if (shadow.lccr0 != new_regs->lccr0) { |
| printk(KERN_ERR "LCCR1 mismatch: 0x%08x != 0x%08x\n", |
| shadow.lccr1, new_regs->lccr1); |
| different = 1; |
| } |
| if (shadow.lccr1 != new_regs->lccr1) { |
| printk(KERN_ERR "LCCR1 mismatch: 0x%08x != 0x%08x\n", |
| shadow.lccr1, new_regs->lccr1); |
| different = 1; |
| } |
| if (shadow.lccr2 != new_regs->lccr2) { |
| printk(KERN_ERR "LCCR2 mismatch: 0x%08x != 0x%08x\n", |
| shadow.lccr2, new_regs->lccr2); |
| different = 1; |
| } |
| if (shadow.lccr3 != new_regs->lccr3) { |
| printk(KERN_ERR "LCCR3 mismatch: 0x%08x != 0x%08x\n", |
| shadow.lccr3, new_regs->lccr3); |
| different = 1; |
| } |
| if (different) { |
| printk(KERN_ERR "var: xres=%d hslen=%d lm=%d rm=%d\n", |
| var->xres, var->hsync_len, |
| var->left_margin, var->right_margin); |
| printk(KERN_ERR "var: yres=%d vslen=%d um=%d bm=%d\n", |
| var->yres, var->vsync_len, |
| var->upper_margin, var->lower_margin); |
| |
| printk(KERN_ERR "Please report this to Russell King " |
| "<rmk@arm.linux.org.uk>\n"); |
| } |
| |
| DPRINTK("olccr0 = 0x%08x\n", shadow.lccr0); |
| DPRINTK("olccr1 = 0x%08x\n", shadow.lccr1); |
| DPRINTK("olccr2 = 0x%08x\n", shadow.lccr2); |
| DPRINTK("olccr3 = 0x%08x\n", shadow.lccr3); |
| } |
| #else |
| #define sa1100fb_check_shadow(regs,var,pcd) |
| #endif |
| |
| |
| |
| /* |
| * IMHO this looks wrong. In 8BPP, length should be 8. |
| */ |
| static struct sa1100fb_rgb rgb_8 = { |
| red: { offset: 0, length: 4, }, |
| green: { offset: 0, length: 4, }, |
| blue: { offset: 0, length: 4, }, |
| transp: { offset: 0, length: 0, }, |
| }; |
| |
| static struct sa1100fb_rgb def_rgb_16 = { |
| red: { offset: 11, length: 5, }, |
| green: { offset: 5, length: 6, }, |
| blue: { offset: 0, length: 5, }, |
| transp: { offset: 0, length: 0, }, |
| }; |
| |
| #ifdef CONFIG_SA1100_ASSABET |
| #ifndef ASSABET_PAL_VIDEO |
| /* |
| * The assabet uses a sharp LQ039Q2DS54 LCD module. It is actually |
| * takes an RGB666 signal, but we provide it with an RGB565 signal |
| * instead (def_rgb_16). |
| */ |
| static struct sa1100fb_mach_info lq039q2ds54_info __initdata = { |
| pixclock: 171521, bpp: 16, |
| xres: 320, yres: 240, |
| |
| hsync_len: 5, vsync_len: 1, |
| left_margin: 61, upper_margin: 3, |
| right_margin: 9, lower_margin: 0, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), |
| }; |
| #else |
| static struct sa1100fb_mach_info pal_info __initdata = { |
| pixclock: 67797, bpp: 16, |
| xres: 640, yres: 512, |
| |
| hsync_len: 64, vsync_len: 6, |
| left_margin: 125, upper_margin: 70, |
| right_margin: 115, lower_margin: 36, |
| |
| sync: 0, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(512), |
| }; |
| #endif |
| #endif |
| |
| #ifdef CONFIG_SA1100_H3600 |
| static struct sa1100fb_mach_info h3600_info __initdata = { |
| #ifdef CONFIG_IPAQ_H3100 |
| pixclock: 407766, bpp: 4, |
| xres: 320, yres: 240, |
| |
| hsync_len: 26, vsync_len: 41, |
| left_margin: 4, upper_margin: 0, |
| right_margin: 4, lower_margin: 0, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| cmap_greyscale: 1, cmap_static: 1, |
| cmap_inverse: 1, |
| |
| lccr0: LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), |
| #else |
| pixclock: 174757, bpp: 16, |
| xres: 320, yres: 240, |
| |
| hsync_len: 3, vsync_len: 3, |
| left_margin: 12, upper_margin: 10, |
| right_margin: 17, lower_margin: 1, |
| |
| sync: 0, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), |
| #endif |
| }; |
| |
| static struct sa1100fb_rgb h3600_rgb_16 = { |
| red: { offset: 12, length: 4, }, |
| green: { offset: 7, length: 4, }, |
| blue: { offset: 1, length: 4, }, |
| transp: { offset: 0, length: 0, }, |
| }; |
| #endif |
| |
| #ifdef CONFIG_SA1100_BRUTUS |
| static struct sa1100fb_mach_info brutus_info __initdata = { |
| pixclock: 0, bpp: 8, |
| xres: 320, yres: 240, |
| |
| hsync_len: 3, vsync_len: 1, |
| left_margin: 41, upper_margin: 0, |
| right_margin: 101, lower_margin: 0, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2) | |
| LCCR3_PixClkDiv(44), |
| }; |
| #endif |
| |
| #ifdef CONFIG_SA1100_CERF |
| static struct sa1100fb_mach_info cerf_info __initdata = { |
| #if defined(CONFIG_CERF_LCD_72_A) |
| pixclock: 171521, bpp: 8, |
| xres: 640, yres: 480, |
| lccr0: LCCR0_Color | LCCR0_Dual | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2) | |
| LCCR3_PixClkDiv(38), |
| #elif defined(CONFIG_CERF_LCD_57_A) |
| pixclock: 171521, bpp: 8, |
| xres: 320, yres: 240, |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2) | |
| LCCR3_PixClkDiv(38), |
| #elif defined(CONFIG_CERF_LCD_38_A) |
| pixclock: 171521, bpp: 8, |
| xres: 240, yres: 320, |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(56) | |
| LCCR3_PixClkDiv(38), |
| #elif defined(CONFIG_CERF_LCD_38_B) |
| pixclock: 171521, bpp: 4, |
| xres: 320, yres: 240, |
| lccr0: LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(56) | |
| LCCR3_PixClkDiv(38), |
| #else |
| #error "Must have a CerfBoard LCD form factor selected" |
| #endif |
| |
| hsync_len: 5, vsync_len: 1, |
| left_margin: 61, upper_margin: 3, |
| right_margin: 9, lower_margin: 0, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| }; |
| |
| #if 0 |
| static struct sa1100fb_rgb cerf_rgb_16 = { |
| red: { offset: 8, length: 4, }, |
| green: { offset: 4, length: 4, }, |
| blue: { offset: 0, length: 4, }, |
| transp: { offset: 0, length: 0, }, |
| }; |
| #endif |
| #endif |
| |
| #ifdef CONFIG_SA1100_FREEBIRD |
| #warning Please check this carefully |
| static struct sa1100fb_mach_info freebird_info __initdata = { |
| pixclock: 171521, bpp: 16, |
| xres: 240, yres: 320, |
| |
| hsync_len: 3, vsync_len: 2, |
| left_margin: 2, upper_margin: 0, |
| right_margin: 2, lower_margin: 0, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixFlEdg | LCCR3_ACBsDiv(2), |
| }; |
| |
| static struct sa1100fb_rgb freebird_rgb_16 = { |
| red: { offset: 8, length: 4, }, |
| green: { offset: 4, length: 4, }, |
| blue: { offset: 0, length: 4, }, |
| transp: { offset: 12, length: 4, }, |
| }; |
| #endif |
| |
| #ifdef CONFIG_SA1100_GRAPHICSCLIENT |
| static struct sa1100fb_mach_info graphicsclient_info __initdata = { |
| pixclock: 53500, bpp: 8, |
| xres: 640, yres: 480, |
| |
| hsync_len: 9, vsync_len: 9, |
| left_margin: 54, upper_margin: 24, |
| right_margin: 54, lower_margin: 32, |
| |
| sync: 0, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), |
| }; |
| #endif |
| |
| #ifdef CONFIG_SA1100_HUW_WEBPANEL |
| static struct sa1100fb_mach_info huw_webpanel_info __initdata = { |
| pixclock: 0, bpp: 8, |
| xres: 640, yres: 480, |
| |
| hsync_len: 3, vsync_len: 1, |
| left_margin: 41, upper_margin: 0, |
| right_margin: 101, lower_margin: 0, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Color | LCCR0_Dual | LCCR0_Pas, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2) | 8, |
| #error FIXME |
| /* |
| * FIXME: please get rid of the '| 8' in preference to an |
| * LCCR3_PixClkDiv() version. --rmk |
| */ |
| }; |
| #endif |
| |
| #ifdef LART_GREY_LCD |
| static struct sa1100fb_mach_info lart_grey_info __initdata = { |
| pixclock: 150000, bpp: 4, |
| xres: 320, yres: 240, |
| |
| hsync_len: 1, vsync_len: 1, |
| left_margin: 4, upper_margin: 0, |
| right_margin: 2, lower_margin: 0, |
| |
| cmap_greyscale: 1, |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Mono | LCCR0_Sngl | LCCR0_Pas | LCCR0_4PixMono, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(512), |
| }; |
| #endif |
| #ifdef LART_COLOR_LCD |
| static struct sa1100fb_mach_info lart_color_info __initdata = { |
| pixclock: 150000, bpp: 16, |
| xres: 320, yres: 240, |
| |
| hsync_len: 2, vsync_len: 3, |
| left_margin: 69, upper_margin: 14, |
| right_margin: 8, lower_margin: 4, |
| |
| sync: 0, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixFlEdg | LCCR3_ACBsDiv(512), |
| }; |
| #endif |
| #ifdef LART_VIDEO_OUT |
| static struct sa1100fb_mach_info lart_video_info __initdata = { |
| pixclock: 39721, bpp: 16, |
| xres: 640, yres: 480, |
| |
| hsync_len: 95, vsync_len: 2, |
| left_margin: 40, upper_margin: 32, |
| right_margin: 24, lower_margin: 11, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnL | LCCR3_PixFlEdg | LCCR3_ACBsDiv(512), |
| }; |
| #endif |
| |
| #ifdef LART_KIT01_LCD |
| static struct sa1100fb_mach_info lart_kit01_info __initdata = |
| { |
| pixclock: 63291, bpp: 16, |
| xres: 640, yres: 480, |
| |
| hsync_len: 64, vsync_len: 3, |
| left_margin: 122, upper_margin: 45, |
| right_margin: 10, lower_margin: 10, |
| |
| sync: 0, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixFlEdg |
| }; |
| #endif |
| |
| #ifdef CONFIG_SA1100_OMNIMETER |
| static struct sa1100fb_mach_info omnimeter_info __initdata = { |
| pixclock: 0, bpp: 4, |
| xres: 480, yres: 320, |
| |
| hsync_len: 1, vsync_len: 1, |
| left_margin: 10, upper_margin: 0, |
| right_margin: 10, lower_margin: 0, |
| |
| cmap_greyscale: 1, |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Mono | LCCR0_Sngl | LCCR0_Pas | LCCR0_8PixMono, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(255) | |
| LCCR3_PixClkDiv(44), |
| #error FIXME: fix pixclock, ACBsDiv |
| /* |
| * FIXME: I think ACBsDiv is wrong above - should it be 512 (disabled)? |
| * - rmk |
| */ |
| }; |
| #endif |
| |
| #ifdef CONFIG_SA1100_PANGOLIN |
| static struct sa1100fb_mach_info pangolin_info __initdata = { |
| pixclock: 341521, bpp: 16, |
| xres: 800, yres: 600, |
| |
| hsync_len: 64, vsync_len: 7, |
| left_margin: 160, upper_margin: 7, |
| right_margin: 24, lower_margin: 1, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixFlEdg, |
| }; |
| #endif |
| |
| #ifdef CONFIG_SA1100_STORK |
| #if STORK_TFT /* ie the NEC TFT */ |
| /* |
| * pixclock is ps per clock. say 72Hz, 800x600 clocks => (1/72)/(800*600) |
| * = 28935 and a bit |
| * NB likely to be increased to ease bus timings wrt pcmcia interface |
| */ |
| static struct sa1100fb_mach_info stork_tft_info __initdata = { |
| pixclock: 28935, bpp: 16, |
| xres: 640, yres: 480, |
| |
| hsync_len: 64, vsync_len: 2, |
| left_margin: 48, upper_margin: 12, |
| right_margin: 48, lower_margin: 31, |
| |
| sync: 0, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg, |
| }; |
| |
| static struct sa1100fb_rgb stork_tft_rgb_16 = { |
| red: { offset: 11, length: 5, }, |
| green: { offset: 5, length: 6, }, |
| blue: { offset: 0, length: 5, }, |
| transp: { offset: 0, length: 0, }, |
| }; |
| |
| #else /* Kyocera DSTN */ |
| |
| static struct sa1100fb_mach_info stork_dstn_info __initdata = { |
| pixclock: 0, bpp: 16, |
| xres: 640, yres: 480, |
| |
| hsync_len: 2, vsync_len: 2, |
| left_margin: 2, upper_margin: 0, |
| right_margin: 2, lower_margin: 0, |
| |
| sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT , |
| |
| lccr0: LCCR0_Color | LCCR0_Dual | LCCR0_Pas, |
| #error Fixme |
| lccr3: 0xff00 | |
| 0x18 /* ought to be 0x14 but DMA isn't up to that as yet */ |
| }; |
| |
| static struct sa1100fb_rgb stork_dstn_rgb_16 = { |
| red: { offset: 8, length: 4, }, |
| green: { offset: 4, length: 4, }, |
| blue: { offset: 0, length: 4, }, |
| transp: { offset: 0, length: 0, }, |
| }; |
| #endif |
| #endif |
| |
| #ifdef CONFIG_SA1100_XP860 |
| static struct sa1100fb_mach_info xp860_info __initdata = { |
| pixclock: 0, bpp: 8, |
| xres: 1024, yres: 768, |
| |
| hsync_len: 3, vsync_len: 3, |
| left_margin: 3, upper_margin: 2, |
| right_margin: 2, lower_margin: 1, |
| |
| sync: 0, |
| |
| lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act, |
| lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_PixClkDiv(6), |
| }; |
| #endif |
| |
| |
| |
| static struct sa1100fb_mach_info * __init |
| sa1100fb_get_machine_info(struct sa1100fb_info *fbi) |
| { |
| struct sa1100fb_mach_info *inf = NULL; |
| |
| /* |
| * R G B T |
| * default {11,5}, { 5,6}, { 0,5}, { 0,0} |
| * h3600 {12,4}, { 7,4}, { 1,4}, { 0,0} |
| * freebird { 8,4}, { 4,4}, { 0,4}, {12,4} |
| */ |
| #ifdef CONFIG_SA1100_ASSABET |
| if (machine_is_assabet()) { |
| #ifndef ASSABET_PAL_VIDEO |
| inf = &lq039q2ds54_info; |
| #else |
| inf = &pal_info; |
| #endif |
| } |
| #endif |
| #ifdef CONFIG_SA1100_H3600 |
| if (machine_is_h3600()) { |
| inf = &h3600_info; |
| fbi->rgb[RGB_16] = &h3600_rgb_16; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_BRUTUS |
| if (machine_is_brutus()) { |
| inf = &brutus_info; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_CERF |
| if (machine_is_cerf()) { |
| inf = &cerf_info; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_FREEBIRD |
| if (machine_is_freebird()) { |
| inf = &freebird_info; |
| fbi->rgb[RGB_16] = &freebird_rgb16; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_GRAPHICSCLIENT |
| if (machine_is_graphicsclient()) { |
| inf = &graphicsclient_info; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_HUW_WEBPANEL |
| if (machine_is_huw_webpanel()) { |
| inf = &huw_webpanel_info; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_LART |
| if (machine_is_lart()) { |
| #ifdef LART_GREY_LCD |
| inf = &lart_grey_info; |
| #endif |
| #ifdef LART_COLOR_LCD |
| inf = &lart_color_info; |
| #endif |
| #ifdef LART_VIDEO_OUT |
| inf = &lart_video_info; |
| #endif |
| #ifdef LART_KIT01_LCD |
| inf = &lart_kit01_info; |
| #endif |
| } |
| #endif |
| #ifdef CONFIG_SA1100_OMNIMETER |
| if (machine_is_omnimeter()) { |
| inf = &omnimeter_info; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_PANGOLIN |
| if (machine_is_pangolin()) { |
| inf = &pangolin_info; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_XP860 |
| if (machine_is_xp860()) { |
| inf = &xp860_info; |
| } |
| #endif |
| #ifdef CONFIG_SA1100_STORK |
| if (machine_is_stork()) { |
| #if STORK_TFT |
| inf = &stork_tft_info; |
| fbi->rgb[RGB_16] = &stork_tft_rgb_16; |
| #else |
| inf = &stork_dstn_info; |
| fbi->rgb[RGB_16] = &stork_dstn_rgb_16; |
| #endif |
| } |
| #endif |
| return inf; |
| } |
| |
| static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_info *); |
| static void set_ctrlr_state(struct sa1100fb_info *fbi, u_int state); |
| |
| static inline void sa1100fb_schedule_task(struct sa1100fb_info *fbi, u_int state) |
| { |
| unsigned long flags; |
| |
| local_irq_save(flags); |
| /* |
| * We need to handle two requests being made at the same time. |
| * There are two important cases: |
| * 1. When we are changing VT (C_REENABLE) while unblanking (C_ENABLE) |
| * We must perform the unblanking, which will do our REENABLE for us. |
| * 2. When we are blanking, but immediately unblank before we have |
| * blanked. We do the "REENABLE" thing here as well, just to be sure. |
| */ |
| if (fbi->task_state == C_ENABLE && state == C_REENABLE) |
| state = (u_int) -1; |
| if (fbi->task_state == C_DISABLE && state == C_ENABLE) |
| state = C_REENABLE; |
| |
| if (state != (u_int)-1) { |
| fbi->task_state = state; |
| schedule_task(&fbi->task); |
| } |
| local_irq_restore(flags); |
| } |
| |
| /* |
| * Get the VAR structure pointer for the specified console |
| */ |
| static inline struct fb_var_screeninfo *get_con_var(struct fb_info *info, int con) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| return (con == fbi->currcon || con == -1) ? &fbi->fb.var : &fb_display[con].var; |
| } |
| |
| /* |
| * Get the DISPLAY structure pointer for the specified console |
| */ |
| static inline struct display *get_con_display(struct fb_info *info, int con) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| return (con < 0) ? fbi->fb.disp : &fb_display[con]; |
| } |
| |
| /* |
| * Get the CMAP pointer for the specified console |
| */ |
| static inline struct fb_cmap *get_con_cmap(struct fb_info *info, int con) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| return (con == fbi->currcon || con == -1) ? &fbi->fb.cmap : &fb_display[con].cmap; |
| } |
| |
| static inline u_int |
| chan_to_field(u_int chan, struct fb_bitfield *bf) |
| { |
| chan &= 0xffff; |
| chan >>= 16 - bf->length; |
| return chan << bf->offset; |
| } |
| |
| /* |
| * Convert bits-per-pixel to a hardware palette PBS value. |
| */ |
| static inline u_int |
| palette_pbs(struct fb_var_screeninfo *var) |
| { |
| int ret = 0; |
| switch (var->bits_per_pixel) { |
| #ifdef FBCON_HAS_CFB4 |
| case 4: ret = 0 << 12; break; |
| #endif |
| #ifdef FBCON_HAS_CFB8 |
| case 8: ret = 1 << 12; break; |
| #endif |
| #ifdef FBCON_HAS_CFB16 |
| case 16: ret = 2 << 12; break; |
| #endif |
| } |
| return ret; |
| } |
| |
| static int |
| sa1100fb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue, |
| u_int trans, struct fb_info *info) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| u_int val, ret = 1; |
| |
| if (regno < fbi->palette_size) { |
| val = ((red >> 4) & 0xf00); |
| val |= ((green >> 8) & 0x0f0); |
| val |= ((blue >> 12) & 0x00f); |
| |
| if (regno == 0) |
| val |= palette_pbs(&fbi->fb.var); |
| |
| fbi->palette_cpu[regno] = val; |
| ret = 0; |
| } |
| return ret; |
| } |
| |
| static int |
| sa1100fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
| u_int trans, struct fb_info *info) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| struct display *disp = get_con_display(info, fbi->currcon); |
| u_int val; |
| int ret = 1; |
| |
| /* |
| * If inverse mode was selected, invert all the colours |
| * rather than the register number. The register number |
| * is what you poke into the framebuffer to produce the |
| * colour you requested. |
| */ |
| if (disp->inverse) { |
| red = 0xffff - red; |
| green = 0xffff - green; |
| blue = 0xffff - blue; |
| } |
| |
| /* |
| * If greyscale is true, then we convert the RGB value |
| * to greyscale no mater what visual we are using. |
| */ |
| if (fbi->fb.var.grayscale) |
| red = green = blue = (19595 * red + 38470 * green + |
| 7471 * blue) >> 16; |
| |
| switch (fbi->fb.disp->visual) { |
| case FB_VISUAL_TRUECOLOR: |
| /* |
| * 12 or 16-bit True Colour. We encode the RGB value |
| * according to the RGB bitfield information. |
| */ |
| if (regno < 16) { |
| u16 *pal = fbi->fb.pseudo_palette; |
| |
| val = chan_to_field(red, &fbi->fb.var.red); |
| val |= chan_to_field(green, &fbi->fb.var.green); |
| val |= chan_to_field(blue, &fbi->fb.var.blue); |
| |
| pal[regno] = val; |
| ret = 0; |
| } |
| break; |
| |
| case FB_VISUAL_STATIC_PSEUDOCOLOR: |
| case FB_VISUAL_PSEUDOCOLOR: |
| ret = sa1100fb_setpalettereg(regno, red, green, blue, trans, info); |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * sa1100fb_display_dma_period() |
| * Calculate the minimum period (in picoseconds) between two DMA |
| * requests for the LCD controller. |
| */ |
| static unsigned int |
| sa1100fb_display_dma_period(struct fb_var_screeninfo *var) |
| { |
| unsigned int mem_bits_per_pixel; |
| |
| mem_bits_per_pixel = var->bits_per_pixel; |
| if (mem_bits_per_pixel == 12) |
| mem_bits_per_pixel = 16; |
| |
| /* |
| * Period = pixclock * bits_per_byte * bytes_per_transfer |
| * / memory_bits_per_pixel; |
| */ |
| return var->pixclock * 8 * 16 / mem_bits_per_pixel; |
| } |
| |
| /* |
| * sa1100fb_decode_var(): |
| * Get the video params out of 'var'. If a value doesn't fit, round it up, |
| * if it's too big, return -EINVAL. |
| * |
| * Suggestion: Round up in the following order: bits_per_pixel, xres, |
| * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, |
| * bitfields, horizontal timing, vertical timing. |
| */ |
| static int |
| sa1100fb_validate_var(struct fb_var_screeninfo *var, |
| struct sa1100fb_info *fbi) |
| { |
| int ret = -EINVAL; |
| |
| if (var->xres < MIN_XRES) |
| var->xres = MIN_XRES; |
| if (var->yres < MIN_YRES) |
| var->yres = MIN_YRES; |
| if (var->xres > fbi->max_xres) |
| var->xres = fbi->max_xres; |
| if (var->yres > fbi->max_yres) |
| var->yres = fbi->max_yres; |
| var->xres_virtual = |
| var->xres_virtual < var->xres ? var->xres : var->xres_virtual; |
| var->yres_virtual = |
| var->yres_virtual < var->yres ? var->yres : var->yres_virtual; |
| |
| DPRINTK("var->bits_per_pixel=%d\n", var->bits_per_pixel); |
| switch (var->bits_per_pixel) { |
| #ifdef FBCON_HAS_CFB4 |
| case 4: ret = 0; break; |
| #endif |
| #ifdef FBCON_HAS_CFB8 |
| case 8: ret = 0; break; |
| #endif |
| #ifdef FBCON_HAS_CFB16 |
| case 16: ret = 0; break; |
| #endif |
| default: |
| break; |
| } |
| |
| #ifdef CONFIG_CPU_FREQ |
| printk(KERN_DEBUG "dma period = %d ps, clock = %d kHz\n", |
| sa1100fb_display_dma_period(var), |
| cpufreq_get(smp_processor_id())); |
| #endif |
| |
| return ret; |
| } |
| |
| static inline void sa1100fb_set_truecolor(u_int is_true_color) |
| { |
| DPRINTK("true_color = %d\n", is_true_color); |
| |
| if (machine_is_assabet()) { |
| #if 1 |
| // phase 4 or newer Assabet's |
| if (is_true_color) |
| ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB); |
| else |
| ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB); |
| #else |
| // older Assabet's |
| if (is_true_color) |
| ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB); |
| else |
| ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB); |
| #endif |
| } |
| } |
| |
| static void |
| sa1100fb_hw_set_var(struct fb_var_screeninfo *var, struct sa1100fb_info *fbi) |
| { |
| u_long palette_mem_size; |
| |
| fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16; |
| |
| palette_mem_size = fbi->palette_size * sizeof(u16); |
| |
| DPRINTK("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size); |
| |
| fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - palette_mem_size); |
| fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size; |
| |
| fb_set_cmap(&fbi->fb.cmap, 1, sa1100fb_setcolreg, &fbi->fb); |
| |
| /* Set board control register to handle new color depth */ |
| sa1100fb_set_truecolor(var->bits_per_pixel >= 16); |
| |
| #ifdef CONFIG_SA1100_OMNIMETER |
| #error Do we have to do this here? We already do it at init time. |
| if (machine_is_omnimeter()) |
| SetLCDContrast(DefaultLCDContrast); |
| #endif |
| |
| sa1100fb_activate_var(var, fbi); |
| |
| fbi->palette_cpu[0] = (fbi->palette_cpu[0] & |
| 0xcfff) | palette_pbs(var); |
| |
| } |
| |
| /* |
| * sa1100fb_set_var(): |
| * Set the user defined part of the display for the specified console |
| */ |
| static int |
| sa1100fb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| struct fb_var_screeninfo *dvar = get_con_var(&fbi->fb, con); |
| struct display *display = get_con_display(&fbi->fb, con); |
| int err, chgvar = 0, rgbidx; |
| |
| DPRINTK("set_var\n"); |
| |
| /* |
| * Decode var contents into a par structure, adjusting any |
| * out of range values. |
| */ |
| err = sa1100fb_validate_var(var, fbi); |
| if (err) |
| return err; |
| |
| if (var->activate & FB_ACTIVATE_TEST) |
| return 0; |
| |
| if ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW) |
| return -EINVAL; |
| |
| if (dvar->xres != var->xres) |
| chgvar = 1; |
| if (dvar->yres != var->yres) |
| chgvar = 1; |
| if (dvar->xres_virtual != var->xres_virtual) |
| chgvar = 1; |
| if (dvar->yres_virtual != var->yres_virtual) |
| chgvar = 1; |
| if (dvar->bits_per_pixel != var->bits_per_pixel) |
| chgvar = 1; |
| if (con < 0) |
| chgvar = 0; |
| |
| switch (var->bits_per_pixel) { |
| #ifdef FBCON_HAS_CFB4 |
| case 4: |
| if (fbi->cmap_static) |
| display->visual = FB_VISUAL_STATIC_PSEUDOCOLOR; |
| else |
| display->visual = FB_VISUAL_PSEUDOCOLOR; |
| display->line_length = var->xres / 2; |
| display->dispsw = &fbcon_cfb4; |
| rgbidx = RGB_8; |
| break; |
| #endif |
| #ifdef FBCON_HAS_CFB8 |
| case 8: |
| if (fbi->cmap_static) |
| display->visual = FB_VISUAL_STATIC_PSEUDOCOLOR; |
| else |
| display->visual = FB_VISUAL_PSEUDOCOLOR; |
| display->line_length = var->xres; |
| display->dispsw = &fbcon_cfb8; |
| rgbidx = RGB_8; |
| break; |
| #endif |
| #ifdef FBCON_HAS_CFB16 |
| case 16: |
| display->visual = FB_VISUAL_TRUECOLOR; |
| display->line_length = var->xres * 2; |
| display->dispsw = &fbcon_cfb16; |
| display->dispsw_data = fbi->fb.pseudo_palette; |
| rgbidx = RGB_16; |
| break; |
| #endif |
| default: |
| rgbidx = 0; |
| display->dispsw = &fbcon_dummy; |
| break; |
| } |
| |
| display->screen_base = fbi->screen_cpu; |
| display->next_line = display->line_length; |
| display->type = fbi->fb.fix.type; |
| display->type_aux = fbi->fb.fix.type_aux; |
| display->ypanstep = fbi->fb.fix.ypanstep; |
| display->ywrapstep = fbi->fb.fix.ywrapstep; |
| display->can_soft_blank = 1; |
| display->inverse = fbi->cmap_inverse; |
| |
| *dvar = *var; |
| dvar->activate &= ~FB_ACTIVATE_ALL; |
| |
| /* |
| * Copy the RGB parameters for this display |
| * from the machine specific parameters. |
| */ |
| dvar->red = fbi->rgb[rgbidx]->red; |
| dvar->green = fbi->rgb[rgbidx]->green; |
| dvar->blue = fbi->rgb[rgbidx]->blue; |
| dvar->transp = fbi->rgb[rgbidx]->transp; |
| |
| DPRINTK("RGBT length = %d:%d:%d:%d\n", |
| dvar->red.length, dvar->green.length, dvar->blue.length, |
| dvar->transp.length); |
| |
| DPRINTK("RGBT offset = %d:%d:%d:%d\n", |
| dvar->red.offset, dvar->green.offset, dvar->blue.offset, |
| dvar->transp.offset); |
| |
| /* |
| * Update the old var. The fbcon drivers still use this. |
| * Once they are using fbi->fb.var, this can be dropped. |
| */ |
| display->var = *dvar; |
| |
| /* |
| * If we are setting all the virtual consoles, also set the |
| * defaults used to create new consoles. |
| */ |
| if (var->activate & FB_ACTIVATE_ALL) |
| fbi->fb.disp->var = *dvar; |
| |
| /* |
| * If the console has changed and the console has defined |
| * a changevar function, call that function. |
| */ |
| if (chgvar && info && fbi->fb.changevar) |
| fbi->fb.changevar(con); |
| |
| /* If the current console is selected, activate the new var. */ |
| if (con != fbi->currcon) |
| return 0; |
| |
| sa1100fb_hw_set_var(dvar, fbi); |
| |
| return 0; |
| } |
| |
| static int |
| __do_set_cmap(struct fb_cmap *cmap, int kspc, int con, |
| struct fb_info *info) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| struct fb_cmap *dcmap = get_con_cmap(info, con); |
| int err = 0; |
| |
| if (con == -1) |
| con = fbi->currcon; |
| |
| /* no colormap allocated? (we always have "this" colour map allocated) */ |
| if (con >= 0) |
| err = fb_alloc_cmap(&fb_display[con].cmap, fbi->palette_size, 0); |
| |
| if (!err && con == fbi->currcon) |
| err = fb_set_cmap(cmap, kspc, sa1100fb_setcolreg, info); |
| |
| if (!err) |
| fb_copy_cmap(cmap, dcmap, kspc ? 0 : 1); |
| |
| return err; |
| } |
| |
| static int |
| sa1100fb_set_cmap(struct fb_cmap *cmap, int kspc, int con, |
| struct fb_info *info) |
| { |
| struct display *disp = get_con_display(info, con); |
| |
| if (disp->visual == FB_VISUAL_TRUECOLOR || |
| disp->visual == FB_VISUAL_STATIC_PSEUDOCOLOR) |
| return -EINVAL; |
| |
| return __do_set_cmap(cmap, kspc, con, info); |
| } |
| |
| static int |
| sa1100fb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info) |
| { |
| struct display *display = get_con_display(info, con); |
| |
| *fix = info->fix; |
| |
| fix->line_length = display->line_length; |
| fix->visual = display->visual; |
| return 0; |
| } |
| |
| static int |
| sa1100fb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info) |
| { |
| *var = *get_con_var(info, con); |
| return 0; |
| } |
| |
| static int |
| sa1100fb_get_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info) |
| { |
| struct fb_cmap *dcmap = get_con_cmap(info, con); |
| fb_copy_cmap(dcmap, cmap, kspc ? 0 : 2); |
| return 0; |
| } |
| |
| static struct fb_ops sa1100fb_ops = { |
| owner: THIS_MODULE, |
| fb_get_fix: sa1100fb_get_fix, |
| fb_get_var: sa1100fb_get_var, |
| fb_set_var: sa1100fb_set_var, |
| fb_get_cmap: sa1100fb_get_cmap, |
| fb_set_cmap: sa1100fb_set_cmap, |
| }; |
| |
| /* |
| * sa1100fb_switch(): |
| * Change to the specified console. Palette and video mode |
| * are changed to the console's stored parameters. |
| * |
| * Uh oh, this can be called from a tasklet (IRQ) |
| */ |
| static int sa1100fb_switch(int con, struct fb_info *info) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| struct display *disp; |
| struct fb_cmap *cmap; |
| |
| DPRINTK("con=%d info->modename=%s\n", con, fbi->fb.modename); |
| |
| if (con == fbi->currcon) |
| return 0; |
| |
| if (fbi->currcon >= 0) { |
| disp = fb_display + fbi->currcon; |
| |
| /* |
| * Save the old colormap and video mode. |
| */ |
| disp->var = fbi->fb.var; |
| |
| if (disp->cmap.len) |
| fb_copy_cmap(&fbi->fb.cmap, &disp->cmap, 0); |
| } |
| |
| fbi->currcon = con; |
| disp = fb_display + con; |
| |
| /* |
| * Make sure that our colourmap contains 256 entries. |
| */ |
| fb_alloc_cmap(&fbi->fb.cmap, 256, 0); |
| |
| if (disp->cmap.len) |
| cmap = &disp->cmap; |
| else |
| cmap = fb_default_cmap(1 << disp->var.bits_per_pixel); |
| |
| fb_copy_cmap(cmap, &fbi->fb.cmap, 0); |
| |
| fbi->fb.var = disp->var; |
| fbi->fb.var.activate = FB_ACTIVATE_NOW; |
| |
| sa1100fb_set_var(&fbi->fb.var, con, info); |
| return 0; |
| } |
| |
| /* |
| * Formal definition of the VESA spec: |
| * On |
| * This refers to the state of the display when it is in full operation |
| * Stand-By |
| * This defines an optional operating state of minimal power reduction with |
| * the shortest recovery time |
| * Suspend |
| * This refers to a level of power management in which substantial power |
| * reduction is achieved by the display. The display can have a longer |
| * recovery time from this state than from the Stand-by state |
| * Off |
| * This indicates that the display is consuming the lowest level of power |
| * and is non-operational. Recovery from this state may optionally require |
| * the user to manually power on the monitor |
| * |
| * Now, the fbdev driver adds an additional state, (blank), where they |
| * turn off the video (maybe by colormap tricks), but don't mess with the |
| * video itself: think of it semantically between on and Stand-By. |
| * |
| * So here's what we should do in our fbdev blank routine: |
| * |
| * VESA_NO_BLANKING (mode 0) Video on, front/back light on |
| * VESA_VSYNC_SUSPEND (mode 1) Video on, front/back light off |
| * VESA_HSYNC_SUSPEND (mode 2) Video on, front/back light off |
| * VESA_POWERDOWN (mode 3) Video off, front/back light off |
| * |
| * This will match the matrox implementation. |
| */ |
| /* |
| * sa1100fb_blank(): |
| * Blank the display by setting all palette values to zero. Note, the |
| * 12 and 16 bpp modes don't really use the palette, so this will not |
| * blank the display in all modes. |
| */ |
| static void sa1100fb_blank(int blank, struct fb_info *info) |
| { |
| struct sa1100fb_info *fbi = (struct sa1100fb_info *)info; |
| int i; |
| |
| DPRINTK("sa1100fb_blank: blank=%d info->modename=%s\n", blank, |
| fbi->fb.modename); |
| |
| switch (blank) { |
| case VESA_POWERDOWN: |
| case VESA_VSYNC_SUSPEND: |
| case VESA_HSYNC_SUSPEND: |
| if (fbi->fb.disp->visual == FB_VISUAL_PSEUDOCOLOR || |
| fbi->fb.disp->visual == FB_VISUAL_STATIC_PSEUDOCOLOR) |
| for (i = 0; i < fbi->palette_size; i++) |
| sa1100fb_setpalettereg(i, 0, 0, 0, 0, info); |
| sa1100fb_schedule_task(fbi, C_DISABLE); |
| if (sa1100fb_blank_helper) |
| sa1100fb_blank_helper(blank); |
| break; |
| |
| case VESA_NO_BLANKING: |
| if (sa1100fb_blank_helper) |
| sa1100fb_blank_helper(blank); |
| if (fbi->fb.disp->visual == FB_VISUAL_PSEUDOCOLOR || |
| fbi->fb.disp->visual == FB_VISUAL_STATIC_PSEUDOCOLOR) |
| fb_set_cmap(&fbi->fb.cmap, 1, sa1100fb_setcolreg, info); |
| sa1100fb_schedule_task(fbi, C_ENABLE); |
| } |
| } |
| |
| static int sa1100fb_updatevar(int con, struct fb_info *info) |
| { |
| DPRINTK("entered\n"); |
| return 0; |
| } |
| |
| /* |
| * Calculate the PCD value from the clock rate (in picoseconds). |
| * We take account of the PPCR clock setting. |
| */ |
| static inline int get_pcd(unsigned int pixclock) |
| { |
| unsigned int pcd; |
| |
| if (pixclock) { |
| pcd = get_cclk_frequency() * pixclock; |
| pcd /= 10000000; |
| pcd += 1; /* make up for integer math truncations */ |
| } else { |
| /* |
| * People seem to be missing this message. Make it big. |
| * Make it stand out. Make sure people see it. |
| */ |
| printk(KERN_WARNING "******************************************************\n"); |
| printk(KERN_WARNING "** ZERO PIXEL CLOCK DETECTED **\n"); |
| printk(KERN_WARNING "** You are using a zero pixclock. This means that **\n"); |
| printk(KERN_WARNING "** clock scaling will not be able to adjust your **\n"); |
| printk(KERN_WARNING "** your timing parameters appropriately, and the **\n"); |
| printk(KERN_WARNING "** bandwidth calculations will fail to work. This **\n"); |
| printk(KERN_WARNING "** will shortly become an error condition, which **\n"); |
| printk(KERN_WARNING "** will prevent your LCD display working. Please **\n"); |
| printk(KERN_WARNING "** send your patches in as soon as possible to shut **\n"); |
| printk(KERN_WARNING "** this message up. **\n"); |
| printk(KERN_WARNING "******************************************************\n"); |
| pcd = 0; |
| } |
| return pcd; |
| } |
| |
| /* |
| * sa1100fb_activate_var(): |
| * Configures LCD Controller based on entries in var parameter. Settings are |
| * only written to the controller if changes were made. |
| */ |
| static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_info *fbi) |
| { |
| struct sa1100fb_lcd_reg new_regs; |
| u_int half_screen_size, yres, pcd = get_pcd(var->pixclock); |
| u_long flags; |
| |
| DPRINTK("Configuring SA1100 LCD\n"); |
| |
| DPRINTK("var: xres=%d hslen=%d lm=%d rm=%d\n", |
| var->xres, var->hsync_len, |
| var->left_margin, var->right_margin); |
| DPRINTK("var: yres=%d vslen=%d um=%d bm=%d\n", |
| var->yres, var->vsync_len, |
| var->upper_margin, var->lower_margin); |
| |
| #if DEBUG_VAR |
| if (var->xres < 16 || var->xres > 1024) |
| printk(KERN_ERR "%s: invalid xres %d\n", |
| fbi->fb.fix.id, var->xres); |
| if (var->hsync_len < 1 || var->hsync_len > 64) |
| printk(KERN_ERR "%s: invalid hsync_len %d\n", |
| fbi->fb.fix.id, var->hsync_len); |
| if (var->left_margin < 1 || var->left_margin > 255) |
| printk(KERN_ERR "%s: invalid left_margin %d\n", |
| fbi->fb.fix.id, var->left_margin); |
| if (var->right_margin < 1 || var->right_margin > 255) |
| printk(KERN_ERR "%s: invalid right_margin %d\n", |
| fbi->fb.fix.id, var->right_margin); |
| if (var->yres < 1 || var->yres > 1024) |
| printk(KERN_ERR "%s: invalid yres %d\n", |
| fbi->fb.fix.id, var->yres); |
| if (var->vsync_len < 1 || var->vsync_len > 64) |
| printk(KERN_ERR "%s: invalid vsync_len %d\n", |
| fbi->fb.fix.id, var->vsync_len); |
| if (var->upper_margin < 0 || var->upper_margin > 255) |
| printk(KERN_ERR "%s: invalid upper_margin %d\n", |
| fbi->fb.fix.id, var->upper_margin); |
| if (var->lower_margin < 0 || var->lower_margin > 255) |
| printk(KERN_ERR "%s: invalid lower_margin %d\n", |
| fbi->fb.fix.id, var->lower_margin); |
| #endif |
| |
| new_regs.lccr0 = fbi->lccr0 | |
| LCCR0_LEN | LCCR0_LDM | LCCR0_BAM | |
| LCCR0_ERM | LCCR0_LtlEnd | LCCR0_DMADel(0); |
| |
| new_regs.lccr1 = |
| LCCR1_DisWdth(var->xres) + |
| LCCR1_HorSnchWdth(var->hsync_len) + |
| LCCR1_BegLnDel(var->left_margin) + |
| LCCR1_EndLnDel(var->right_margin); |
| |
| /* |
| * If we have a dual scan LCD, then we need to halve |
| * the YRES parameter. |
| */ |
| yres = var->yres; |
| if (fbi->lccr0 & LCCR0_Dual) |
| yres /= 2; |
| |
| new_regs.lccr2 = |
| LCCR2_DisHght(yres) + |
| LCCR2_VrtSnchWdth(var->vsync_len) + |
| LCCR2_BegFrmDel(var->upper_margin) + |
| LCCR2_EndFrmDel(var->lower_margin); |
| |
| new_regs.lccr3 = fbi->lccr3 | |
| (var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) | |
| (var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL) | |
| LCCR3_ACBsCntOff; |
| |
| if (pcd) |
| new_regs.lccr3 |= LCCR3_PixClkDiv(pcd); |
| |
| sa1100fb_check_shadow(&new_regs, var, pcd); |
| |
| DPRINTK("nlccr0 = 0x%08x\n", new_regs.lccr0); |
| DPRINTK("nlccr1 = 0x%08x\n", new_regs.lccr1); |
| DPRINTK("nlccr2 = 0x%08x\n", new_regs.lccr2); |
| DPRINTK("nlccr3 = 0x%08x\n", new_regs.lccr3); |
| |
| half_screen_size = var->bits_per_pixel; |
| half_screen_size = half_screen_size * var->xres * var->yres / 16; |
| |
| /* Update shadow copy atomically */ |
| local_irq_save(flags); |
| fbi->dbar1 = fbi->palette_dma; |
| fbi->dbar2 = fbi->screen_dma + half_screen_size; |
| |
| fbi->reg_lccr0 = new_regs.lccr0; |
| fbi->reg_lccr1 = new_regs.lccr1; |
| fbi->reg_lccr2 = new_regs.lccr2; |
| fbi->reg_lccr3 = new_regs.lccr3; |
| local_irq_restore(flags); |
| |
| /* |
| * Only update the registers if the controller is enabled |
| * and something has changed. |
| */ |
| if ((LCCR0 != fbi->reg_lccr0) || (LCCR1 != fbi->reg_lccr1) || |
| (LCCR2 != fbi->reg_lccr2) || (LCCR3 != fbi->reg_lccr3) || |
| (DBAR1 != fbi->dbar1) || (DBAR2 != fbi->dbar2)) |
| sa1100fb_schedule_task(fbi, C_REENABLE); |
| |
| return 0; |
| } |
| |
| /* |
| * NOTE! The following functions are purely helpers for set_ctrlr_state. |
| * Do not call them directly; set_ctrlr_state does the correct serialisation |
| * to ensure that things happen in the right way 100% of time time. |
| * -- rmk |
| */ |
| |
| /* |
| * FIXME: move LCD power stuff into sa1100fb_power_up_lcd() |
| * Also, I'm expecting that the backlight stuff should |
| * be handled differently. |
| */ |
| static void sa1100fb_backlight_on(struct sa1100fb_info *fbi) |
| { |
| DPRINTK("backlight on\n"); |
| |
| #ifdef CONFIG_SA1100_FREEBIRD |
| #error FIXME |
| if (machine_is_freebird()) { |
| BCR_set(BCR_FREEBIRD_LCD_PWR | BCR_FREEBIRD_LCD_DISP); |
| } |
| #endif |
| #ifdef CONFIG_SA1100_FREEBIRD |
| if (machine_is_freebird()) { |
| /* Turn on backlight ,Chester */ |
| BCR_set(BCR_FREEBIRD_LCD_BACKLIGHT); |
| } |
| #endif |
| #ifdef CONFIG_SA1100_HUW_WEBPANEL |
| #error FIXME |
| if (machine_is_huw_webpanel()) { |
| BCR_set(BCR_CCFL_POW + BCR_PWM_BACKLIGHT); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| schedule_task(200 * HZ / 1000); |
| BCR_set(BCR_TFT_ENA); |
| } |
| #endif |
| #ifdef CONFIG_SA1100_OMNIMETER |
| if (machine_is_omnimeter()) |
| LEDBacklightOn(); |
| #endif |
| } |
| |
| /* |
| * FIXME: move LCD power stuf into sa1100fb_power_down_lcd() |
| * Also, I'm expecting that the backlight stuff should |
| * be handled differently. |
| */ |
| static void sa1100fb_backlight_off(struct sa1100fb_info *fbi) |
| { |
| DPRINTK("backlight off\n"); |
| |
| #ifdef CONFIG_SA1100_FREEBIRD |
| #error FIXME |
| if (machine_is_freebird()) { |
| BCR_clear(BCR_FREEBIRD_LCD_PWR | BCR_FREEBIRD_LCD_DISP |
| /*| BCR_FREEBIRD_LCD_BACKLIGHT */ ); |
| } |
| #endif |
| #ifdef CONFIG_SA1100_OMNIMETER |
| if (machine_is_omnimeter()) |
| LEDBacklightOff(); |
| #endif |
| } |
| |
| static void sa1100fb_power_up_lcd(struct sa1100fb_info *fbi) |
| { |
| DPRINTK("LCD power on\n"); |
| |
| #ifndef ASSABET_PAL_VIDEO |
| if (machine_is_assabet()) |
| ASSABET_BCR_set(ASSABET_BCR_LCD_ON); |
| #endif |
| #ifdef CONFIG_SA1100_HUW_WEBPANEL |
| if (machine_is_huw_webpanel()) |
| BCR_clear(BCR_TFT_NPWR); |
| #endif |
| #ifdef CONFIG_SA1100_OMNIMETER |
| if (machine_is_omnimeter()) |
| LCDPowerOn(); |
| #endif |
| #ifdef CONFIG_SA1100_H3600 |
| if (machine_is_h3600()) { |
| set_h3600_egpio(EGPIO_H3600_LCD_ON | |
| EGPIO_H3600_LCD_PCI | |
| EGPIO_H3600_LCD_5V_ON | |
| EGPIO_H3600_LVDD_ON); |
| } |
| #endif |
| #ifdef CONFIG_SA1100_STORK |
| if (machine_is_stork()) { |
| storkSetLCDCPLD(0, 1); |
| storkSetLatchA(STORK_LCD_BACKLIGHT_INVERTER_ON); |
| } |
| #endif |
| } |
| |
| static void sa1100fb_power_down_lcd(struct sa1100fb_info *fbi) |
| { |
| DPRINTK("LCD power off\n"); |
| |
| #ifndef ASSABET_PAL_VIDEO |
| if (machine_is_assabet()) |
| ASSABET_BCR_clear(ASSABET_BCR_LCD_ON); |
| #endif |
| #ifdef CONFIG_SA1100_HUW_WEBPANEL |
| // dont forget to set the control lines to zero (?) |
| if (machine_is_huw_webpanel()) |
| BCR_set(BCR_TFT_NPWR); |
| #endif |
| #ifdef CONFIG_SA1100_H3600 |
| if (machine_is_h3600()) { |
| clr_h3600_egpio(EGPIO_H3600_LCD_ON | |
| EGPIO_H3600_LCD_PCI | |
| EGPIO_H3600_LCD_5V_ON | |
| EGPIO_H3600_LVDD_ON); |
| } |
| #endif |
| #ifdef CONFIG_SA1100_STORK |
| if (machine_is_stork()) { |
| storkSetLCDCPLD(0, 0); |
| storkClearLatchA(STORK_LCD_BACKLIGHT_INVERTER_ON); |
| } |
| #endif |
| } |
| |
| static void sa1100fb_setup_gpio(struct sa1100fb_info *fbi) |
| { |
| u_int mask = 0; |
| |
| /* |
| * Enable GPIO<9:2> for LCD use if: |
| * 1. Active display, or |
| * 2. Color Dual Passive display |
| * |
| * see table 11.8 on page 11-27 in the SA1100 manual |
| * -- Erik. |
| * |
| * SA1110 spec update nr. 25 says we can and should |
| * clear LDD15 to 12 for 4 or 8bpp modes with active |
| * panels. |
| */ |
| if ((fbi->reg_lccr0 & LCCR0_CMS) == LCCR0_Color && |
| (fbi->reg_lccr0 & (LCCR0_Dual|LCCR0_Act)) != 0) { |
| mask = GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8; |
| |
| if (fbi->fb.var.bits_per_pixel > 8 || |
| (fbi->reg_lccr0 & (LCCR0_Dual|LCCR0_Act)) == LCCR0_Dual) |
| mask |= GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12; |
| |
| } |
| |
| #ifdef CONFIG_SA1100_FREEBIRD |
| #error Please contact <rmk@arm.linux.org.uk> about this |
| if (machine_is_freebird()) { |
| /* Color single passive */ |
| mask |= GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 | |
| GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8; |
| } |
| #endif |
| if (machine_is_cerf()) { |
| /* GPIO15 is used as a bypass for 3.8" displays */ |
| mask |= GPIO_GPIO15; |
| #ifdef CONFIG_SA1100_CERF |
| #warning Read Me Now! |
| #endif |
| #if 0 /* if this causes you problems, mail <rmk@arm.linux.org.uk> please. */ |
| /* |
| * This was enabled for the 72_A version only, which is a _color_ |
| * _dual_ LCD. Now look at the generic test above, and calculate |
| * the mask value for a colour dual display... |
| * |
| * I therefore conclude that the code below is redundant, and will |
| * be killed at the start of November 2001. |
| */ |
| /* FIXME: why is this? The Cerf's display doesn't seem |
| * to be dual scan or active. I just leave it here, |
| * but in my opinion this is definitively wrong. |
| * -- Erik <J.A.K.Mouw@its.tudelft.nl> |
| */ |
| |
| /* REPLY: Umm.. Well to be honest, the 5.7" LCD which |
| * this was used for does not use these pins, but |
| * apparently all hell breaks loose if they are not |
| * set on the Cerf, so we decided to leave them in ;) |
| * -- Daniel Chemko <dchemko@intrinsyc.com> |
| */ |
| /* color {dual/single} passive */ |
| mask |= GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 | |
| GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8; |
| #endif |
| } |
| |
| if (mask) { |
| GPDR |= mask; |
| GAFR |= mask; |
| } |
| } |
| |
| static void sa1100fb_enable_controller(struct sa1100fb_info *fbi) |
| { |
| DPRINTK("Enabling LCD controller\n"); |
| |
| /* |
| * Make sure the mode bits are present in the first palette entry |
| */ |
| fbi->palette_cpu[0] &= 0xcfff; |
| fbi->palette_cpu[0] |= palette_pbs(&fbi->fb.var); |
| |
| /* Sequence from 11.7.10 */ |
| LCCR3 = fbi->reg_lccr3; |
| LCCR2 = fbi->reg_lccr2; |
| LCCR1 = fbi->reg_lccr1; |
| LCCR0 = fbi->reg_lccr0 & ~LCCR0_LEN; |
| DBAR1 = fbi->dbar1; |
| DBAR2 = fbi->dbar2; |
| LCCR0 |= LCCR0_LEN; |
| |
| #ifdef CONFIG_SA1100_GRAPHICSCLIENT |
| #error Where is GPIO24 set as an output? Can we fit this in somewhere else? |
| if (machine_is_graphicsclient()) { |
| // From ADS doc again...same as disable |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| schedule_timeout(20 * HZ / 1000); |
| GPSR |= GPIO_GPIO24; |
| } |
| #endif |
| |
| DPRINTK("DBAR1 = %p\n", DBAR1); |
| DPRINTK("DBAR2 = %p\n", DBAR2); |
| DPRINTK("LCCR0 = 0x%08x\n", LCCR0); |
| DPRINTK("LCCR1 = 0x%08x\n", LCCR1); |
| DPRINTK("LCCR2 = 0x%08x\n", LCCR2); |
| DPRINTK("LCCR3 = 0x%08x\n", LCCR3); |
| } |
| |
| static void sa1100fb_disable_controller(struct sa1100fb_info *fbi) |
| { |
| DECLARE_WAITQUEUE(wait, current); |
| |
| DPRINTK("Disabling LCD controller\n"); |
| |
| #ifdef CONFIG_SA1100_GRAPHICSCLIENT |
| #error Where is GPIO24 set as an output? Can we fit this in somewhere else? |
| if (machine_is_graphicsclient()) { |
| /* |
| * From ADS internal document: |
| * GPIO24 should be LOW at least 10msec prior to disabling |
| * the LCD interface. |
| * |
| * We'll wait 20msec. |
| */ |
| GPCR |= GPIO_GPIO24; |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| schedule_timeout(20 * HZ / 1000); |
| } |
| #endif |
| #ifdef CONFIG_SA1100_HUW_WEBPANEL |
| #error Move me into sa1100fb_power_up_lcd and/or sa1100fb_backlight_on |
| if (machine_is_huw_webpanel()) { |
| // dont forget to set the control lines to zero (?) |
| DPRINTK("ShutDown HuW LCD controller\n"); |
| BCR_clear(BCR_TFT_ENA + BCR_CCFL_POW + BCR_PWM_BACKLIGHT); |
| } |
| #endif |
| |
| add_wait_queue(&fbi->ctrlr_wait, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| |
| LCSR = 0xffffffff; /* Clear LCD Status Register */ |
| LCCR0 &= ~LCCR0_LDM; /* Enable LCD Disable Done Interrupt */ |
| enable_irq(IRQ_LCD); /* Enable LCD IRQ */ |
| LCCR0 &= ~LCCR0_LEN; /* Disable LCD Controller */ |
| |
| schedule_timeout(20 * HZ / 1000); |
| current->state = TASK_RUNNING; |
| remove_wait_queue(&fbi->ctrlr_wait, &wait); |
| } |
| |
| /* |
| * sa1100fb_handle_irq: Handle 'LCD DONE' interrupts. |
| */ |
| static void sa1100fb_handle_irq(int irq, void *dev_id, struct pt_regs *regs) |
| { |
| struct sa1100fb_info *fbi = dev_id; |
| unsigned int lcsr = LCSR; |
| |
| if (lcsr & LCSR_LDD) { |
| LCCR0 |= LCCR0_LDM; |
| wake_up(&fbi->ctrlr_wait); |
| } |
| |
| LCSR = lcsr; |
| } |
| |
| /* |
| * This function must be called from task context only, since it will |
| * sleep when disabling the LCD controller, or if we get two contending |
| * processes trying to alter state. |
| */ |
| static void set_ctrlr_state(struct sa1100fb_info *fbi, u_int state) |
| { |
| u_int old_state; |
| |
| down(&fbi->ctrlr_sem); |
| |
| old_state = fbi->state; |
| |
| switch (state) { |
| case C_DISABLE_CLKCHANGE: |
| /* |
| * Disable controller for clock change. If the |
| * controller is already disabled, then do nothing. |
| */ |
| if (old_state != C_DISABLE) { |
| fbi->state = state; |
| sa1100fb_disable_controller(fbi); |
| } |
| break; |
| |
| case C_DISABLE: |
| /* |
| * Disable controller |
| */ |
| if (old_state != C_DISABLE) { |
| fbi->state = state; |
| |
| sa1100fb_backlight_off(fbi); |
| if (old_state != C_DISABLE_CLKCHANGE) |
| sa1100fb_disable_controller(fbi); |
| sa1100fb_power_down_lcd(fbi); |
| } |
| break; |
| |
| case C_ENABLE_CLKCHANGE: |
| /* |
| * Enable the controller after clock change. Only |
| * do this if we were disabled for the clock change. |
| */ |
| if (old_state == C_DISABLE_CLKCHANGE) { |
| fbi->state = C_ENABLE; |
| sa1100fb_enable_controller(fbi); |
| } |
| break; |
| |
| case C_REENABLE: |
| /* |
| * Re-enable the controller only if it was already |
| * enabled. This is so we reprogram the control |
| * registers. |
| */ |
| if (old_state == C_ENABLE) { |
| sa1100fb_disable_controller(fbi); |
| sa1100fb_setup_gpio(fbi); |
| sa1100fb_enable_controller(fbi); |
| } |
| break; |
| |
| case C_ENABLE: |
| /* |
| * Power up the LCD screen, enable controller, and |
| * turn on the backlight. |
| */ |
| if (old_state != C_ENABLE) { |
| fbi->state = C_ENABLE; |
| sa1100fb_setup_gpio(fbi); |
| sa1100fb_power_up_lcd(fbi); |
| sa1100fb_enable_controller(fbi); |
| sa1100fb_backlight_on(fbi); |
| } |
| break; |
| } |
| up(&fbi->ctrlr_sem); |
| } |
| |
| /* |
| * Our LCD controller task (which is called when we blank or unblank) |
| * via keventd. |
| */ |
| static void sa1100fb_task(void *dummy) |
| { |
| struct sa1100fb_info *fbi = dummy; |
| u_int state = xchg(&fbi->task_state, -1); |
| |
| set_ctrlr_state(fbi, state); |
| } |
| |
| #ifdef CONFIG_CPU_FREQ |
| /* |
| * Calculate the minimum DMA period over all displays that we own. |
| * This, together with the SDRAM bandwidth defines the slowest CPU |
| * frequency that can be selected. |
| */ |
| static unsigned int sa1100fb_min_dma_period(struct sa1100fb_info *fbi) |
| { |
| unsigned int min_period = (unsigned int)-1; |
| int i; |
| |
| for (i = 0; i < MAX_NR_CONSOLES; i++) { |
| unsigned int period; |
| |
| /* |
| * Do we own this display? |
| */ |
| if (fb_display[i].fb_info != &fbi->fb) |
| continue; |
| |
| /* |
| * Ok, calculate its DMA period |
| */ |
| period = sa1100fb_display_dma_period(get_con_var(&fbi->fb, i)); |
| if (period < min_period) |
| min_period = period; |
| } |
| |
| return min_period; |
| } |
| |
| /* |
| * CPU clock speed change handler. We need to adjust the LCD timing |
| * parameters when the CPU clock is adjusted by the power management |
| * subsystem. |
| */ |
| static int |
| sa1100fb_clkchg_notifier(struct notifier_block *nb, unsigned long val, |
| void *data) |
| { |
| struct sa1100fb_info *fbi = TO_INF(nb, clockchg); |
| struct cpufreq_minmax *mm = data; |
| u_int pcd; |
| |
| switch (val) { |
| case CPUFREQ_MINMAX: |
| printk(KERN_DEBUG "min dma period: %d ps, old clock %d kHz, " |
| "new clock %d kHz\n", sa1100fb_min_dma_period(fbi), |
| mm->cur_freq, mm->new_freq); |
| /* todo: fill in min/max values */ |
| break; |
| |
| case CPUFREQ_PRECHANGE: |
| set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE); |
| break; |
| |
| case CPUFREQ_POSTCHANGE: |
| pcd = get_pcd(fbi->fb.var.pixclock); |
| fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | LCCR3_PixClkDiv(pcd); |
| set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE); |
| break; |
| } |
| return 0; |
| } |
| #endif |
| |
| #ifdef CONFIG_PM |
| /* |
| * Power management hook. Note that we won't be called from IRQ context, |
| * unlike the blank functions above, so we may sleep. |
| */ |
| static int |
| sa1100fb_pm_callback(struct pm_dev *pm_dev, pm_request_t req, void *data) |
| { |
| struct sa1100fb_info *fbi = pm_dev->data; |
| |
| DPRINTK("pm_callback: %d\n", req); |
| |
| if (req == PM_SUSPEND || req == PM_RESUME) { |
| int state = (int)data; |
| |
| if (state == 0) { |
| /* Enter D0. */ |
| set_ctrlr_state(fbi, C_ENABLE); |
| } else { |
| /* Enter D1-D3. Disable the LCD controller. */ |
| set_ctrlr_state(fbi, C_DISABLE); |
| } |
| } |
| DPRINTK("done\n"); |
| return 0; |
| } |
| #endif |
| |
| /* |
| * sa1100fb_map_video_memory(): |
| * Allocates the DRAM memory for the frame buffer. This buffer is |
| * remapped into a non-cached, non-buffered, memory region to |
| * allow palette and pixel writes to occur without flushing the |
| * cache. Once this area is remapped, all virtual memory |
| * access to the video memory should occur at the new region. |
| */ |
| static int __init sa1100fb_map_video_memory(struct sa1100fb_info *fbi) |
| { |
| /* |
| * We reserve one page for the palette, plus the size |
| * of the framebuffer. |
| */ |
| fbi->map_size = PAGE_ALIGN(fbi->fb.fix.smem_len + PAGE_SIZE); |
| fbi->map_cpu = consistent_alloc(GFP_KERNEL, fbi->map_size, |
| &fbi->map_dma); |
| |
| if (fbi->map_cpu) { |
| fbi->screen_cpu = fbi->map_cpu + PAGE_SIZE; |
| fbi->screen_dma = fbi->map_dma + PAGE_SIZE; |
| fbi->fb.fix.smem_start = fbi->screen_dma; |
| } |
| |
| return fbi->map_cpu ? 0 : -ENOMEM; |
| } |
| |
| /* Fake monspecs to fill in fbinfo structure */ |
| static struct fb_monspecs monspecs __initdata = { |
| 30000, 70000, 50, 65, 0 /* Generic */ |
| }; |
| |
| |
| static struct sa1100fb_info * __init sa1100fb_init_fbinfo(void) |
| { |
| struct sa1100fb_mach_info *inf; |
| struct sa1100fb_info *fbi; |
| |
| fbi = kmalloc(sizeof(struct sa1100fb_info) + sizeof(struct display) + |
| sizeof(u16) * 16, GFP_KERNEL); |
| if (!fbi) |
| return NULL; |
| |
| memset(fbi, 0, sizeof(struct sa1100fb_info) + sizeof(struct display)); |
| |
| fbi->currcon = -1; |
| |
| strcpy(fbi->fb.fix.id, SA1100_NAME); |
| |
| fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS; |
| fbi->fb.fix.type_aux = 0; |
| fbi->fb.fix.xpanstep = 0; |
| fbi->fb.fix.ypanstep = 0; |
| fbi->fb.fix.ywrapstep = 0; |
| fbi->fb.fix.accel = FB_ACCEL_NONE; |
| |
| fbi->fb.var.nonstd = 0; |
| fbi->fb.var.activate = FB_ACTIVATE_NOW; |
| fbi->fb.var.height = -1; |
| fbi->fb.var.width = -1; |
| fbi->fb.var.accel_flags = 0; |
| fbi->fb.var.vmode = FB_VMODE_NONINTERLACED; |
| |
| strcpy(fbi->fb.modename, SA1100_NAME); |
| strcpy(fbi->fb.fontname, "Acorn8x8"); |
| |
| fbi->fb.fbops = &sa1100fb_ops; |
| fbi->fb.changevar = NULL; |
| fbi->fb.switch_con = sa1100fb_switch; |
| fbi->fb.updatevar = sa1100fb_updatevar; |
| fbi->fb.blank = sa1100fb_blank; |
| fbi->fb.flags = FBINFO_FLAG_DEFAULT; |
| fbi->fb.node = -1; |
| fbi->fb.monspecs = monspecs; |
| fbi->fb.disp = (struct display *)(fbi + 1); |
| fbi->fb.pseudo_palette = (void *)(fbi->fb.disp + 1); |
| |
| fbi->rgb[RGB_8] = &rgb_8; |
| fbi->rgb[RGB_16] = &def_rgb_16; |
| |
| inf = sa1100fb_get_machine_info(fbi); |
| |
| fbi->max_xres = inf->xres; |
| fbi->fb.var.xres = inf->xres; |
| fbi->fb.var.xres_virtual = inf->xres; |
| fbi->max_yres = inf->yres; |
| fbi->fb.var.yres = inf->yres; |
| fbi->fb.var.yres_virtual = inf->yres; |
| fbi->max_bpp = inf->bpp; |
| fbi->fb.var.bits_per_pixel = inf->bpp; |
| fbi->fb.var.pixclock = inf->pixclock; |
| fbi->fb.var.hsync_len = inf->hsync_len; |
| fbi->fb.var.left_margin = inf->left_margin; |
| fbi->fb.var.right_margin = inf->right_margin; |
| fbi->fb.var.vsync_len = inf->vsync_len; |
| fbi->fb.var.upper_margin = inf->upper_margin; |
| fbi->fb.var.lower_margin = inf->lower_margin; |
| fbi->fb.var.sync = inf->sync; |
| fbi->fb.var.grayscale = inf->cmap_greyscale; |
| fbi->cmap_inverse = inf->cmap_inverse; |
| fbi->cmap_static = inf->cmap_static; |
| fbi->lccr0 = inf->lccr0; |
| fbi->lccr3 = inf->lccr3; |
| fbi->state = C_DISABLE; |
| fbi->task_state = (u_char)-1; |
| fbi->fb.fix.smem_len = fbi->max_xres * fbi->max_yres * |
| fbi->max_bpp / 8; |
| |
| init_waitqueue_head(&fbi->ctrlr_wait); |
| INIT_TQUEUE(&fbi->task, sa1100fb_task, fbi); |
| init_MUTEX(&fbi->ctrlr_sem); |
| |
| return fbi; |
| } |
| |
| int __init sa1100fb_init(void) |
| { |
| struct sa1100fb_info *fbi; |
| int ret; |
| |
| fbi = sa1100fb_init_fbinfo(); |
| ret = -ENOMEM; |
| if (!fbi) |
| goto failed; |
| |
| /* Initialize video memory */ |
| ret = sa1100fb_map_video_memory(fbi); |
| if (ret) |
| goto failed; |
| |
| ret = request_irq(IRQ_LCD, sa1100fb_handle_irq, SA_INTERRUPT, |
| fbi->fb.fix.id, fbi); |
| if (ret) { |
| printk(KERN_ERR "sa1100fb: request_irq failed: %d\n", ret); |
| goto failed; |
| } |
| |
| #ifdef ASSABET_PAL_VIDEO |
| if (machine_is_assabet()) |
| ASSABET_BCR_clear(ASSABET_BCR_LCD_ON); |
| #endif |
| |
| #ifdef CONFIG_SA1100_FREEBIRD |
| #error Please move this into sa1100fb_power_up_lcd |
| if (machine_is_freebird()) { |
| BCR_set(BCR_FREEBIRD_LCD_DISP); |
| mdelay(20); |
| BCR_set(BCR_FREEBIRD_LCD_PWR); |
| mdelay(20); |
| } |
| #endif |
| |
| sa1100fb_set_var(&fbi->fb.var, -1, &fbi->fb); |
| |
| ret = register_framebuffer(&fbi->fb); |
| if (ret < 0) |
| goto failed; |
| |
| #ifdef CONFIG_PM |
| /* |
| * Note that the console registers this as well, but we want to |
| * power down the display prior to sleeping. |
| */ |
| fbi->pm = pm_register(PM_SYS_DEV, PM_SYS_VGA, sa1100fb_pm_callback); |
| if (fbi->pm) |
| fbi->pm->data = fbi; |
| #endif |
| #ifdef CONFIG_CPU_FREQ |
| fbi->clockchg.notifier_call = sa1100fb_clkchg_notifier; |
| cpufreq_register_notifier(&fbi->clockchg); |
| #endif |
| |
| /* |
| * Ok, now enable the LCD controller |
| */ |
| set_ctrlr_state(fbi, C_ENABLE); |
| |
| /* This driver cannot be unloaded at the moment */ |
| MOD_INC_USE_COUNT; |
| |
| return 0; |
| |
| failed: |
| if (fbi) |
| kfree(fbi); |
| return ret; |
| } |
| |
| int __init sa1100fb_setup(char *options) |
| { |
| #if 0 |
| char *this_opt; |
| |
| if (!options || !*options) |
| return 0; |
| |
| while ((this_opt = strsep(&options, ",")) != NULL) { |
| |
| if (!strncmp(this_opt, "bpp:", 4)) |
| current_par.max_bpp = |
| simple_strtoul(this_opt + 4, NULL, 0); |
| |
| if (!strncmp(this_opt, "lccr0:", 6)) |
| lcd_shadow.lccr0 = |
| simple_strtoul(this_opt + 6, NULL, 0); |
| if (!strncmp(this_opt, "lccr1:", 6)) { |
| lcd_shadow.lccr1 = |
| simple_strtoul(this_opt + 6, NULL, 0); |
| current_par.max_xres = |
| (lcd_shadow.lccr1 & 0x3ff) + 16; |
| } |
| if (!strncmp(this_opt, "lccr2:", 6)) { |
| lcd_shadow.lccr2 = |
| simple_strtoul(this_opt + 6, NULL, 0); |
| current_par.max_yres = |
| (lcd_shadow. |
| lccr0 & LCCR0_SDS) ? ((lcd_shadow. |
| lccr2 & 0x3ff) + |
| 1) * |
| 2 : ((lcd_shadow.lccr2 & 0x3ff) + 1); |
| } |
| if (!strncmp(this_opt, "lccr3:", 6)) |
| lcd_shadow.lccr3 = |
| simple_strtoul(this_opt + 6, NULL, 0); |
| } |
| #endif |
| return 0; |
| } |
| |
| MODULE_DESCRIPTION("StrongARM-1100/1110 framebuffer driver"); |
| MODULE_LICENSE("GPL"); |