sa1100fb.c
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- /*
- * 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.
- *
- * - The following must never be specified in a panel definition:
- * LCCR0_LtlEnd, LCCR3_PixClkDiv, LCCR3_VrtSnchL, LCCR3_HorSnchL
- *
- * - The following should be specified:
- * either LCCR0_Color or LCCR0_Mono
- * either LCCR0_Sngl or LCCR0_Dual
- * either LCCR0_Act or LCCR0_Pas
- * either LCCR3_OutEnH or LCCD3_OutEnL
- * either LCCR3_PixRsEdg or LCCR3_PixFlEdg
- * either LCCR3_ACBsDiv or LCCR3_ACBsCntOff
- *
- * 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.
- *
- * 2002/02/21: <abraham@2d3d.co.za>
- * - Added support for ICP LCD-Kit01 on Frodo.
- * - Added support for backlight via CPLDs on Frodo.
- */
- #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 <asm/arch/shannon.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>
- /*
- * 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);
- /*
- * 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_H3XXX
- static struct sa1100fb_mach_info h3800_info __initdata = {
- 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, cmap_static: 1,
- lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
- lccr3: LCCR3_ACBsCntOff | LCCR3_PixFlEdg | LCCR3_OutEnH,
- };
- static struct sa1100fb_mach_info h3600_info __initdata = {
- 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, cmap_static: 1,
- lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
- lccr3: LCCR3_ACBsCntOff | LCCR3_OutEnH | LCCR3_PixFlEdg,
- };
- 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, },
- };
- static struct sa1100fb_mach_info h3100_info __initdata = {
- pixclock: 406977, 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_inverse: 1,
- lccr0: LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
- lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
- };
- #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 CONFIG_SA1100_FRODO
- /* At the moment, this is the only LCD available
- for the 2d3D, Inc. SA-1110 Development Board */
- #define KIT01_LCD
- #endif
- #ifdef KIT01_LCD
- static struct sa1100fb_mach_info 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_SHANNON
- static struct sa1100fb_mach_info shannon_info __initdata = {
- pixclock: 152500, bpp: 8,
- xres: 640, yres: 480,
- hsync_len: 4, vsync_len: 3,
- left_margin: 2, upper_margin: 0,
- right_margin: 1, lower_margin: 0,
- sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- lccr0: LCCR0_Color | LCCR0_Dual | LCCR0_Pas,
- lccr3: LCCR3_ACBsDiv(512),
- };
- #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 | LCCR3_ACBsCntOff,
- };
- #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_H3XXX
- if (machine_is_h3600()) {
- inf = &h3600_info;
- fbi->rgb[RGB_16] = &h3600_rgb_16;
- }
- if (machine_is_h3100()) {
- inf = &h3100_info;
- }
- if (machine_is_h3800()) {
- inf = &h3800_info;
- }
- #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 KIT01_LCD
- inf = &kit01_info;
- #endif
- }
- #endif
- #ifdef CONFIG_SA1100_FRODO
- if (machine_is_frodo()) {
- #ifdef KIT01_LCD
- inf = &kit01_info;
- #endif
- }
- #endif
- #ifdef CONFIG_SA1100_SHANNON
- if (machine_is_shannon()) {
- inf = &shannon_info;
- }
- #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=%dn", 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 kHzn",
- 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 = %dn", 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%08lxn", (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_varn");
- /*
- * 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:%dn",
- dvar->red.length, dvar->green.length, dvar->blue.length,
- dvar->transp.length);
- DPRINTK("RGBT offset = %d:%d:%d:%dn",
- 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=%sn", 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=%sn", 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("enteredn");
- 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 = cpufreq_get(0) / 100;
- pcd *= 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 LCDn");
- DPRINTK("var: xres=%d hslen=%d lm=%d rm=%dn",
- var->xres, var->hsync_len,
- var->left_margin, var->right_margin);
- DPRINTK("var: yres=%d vslen=%d um=%d bm=%dn",
- 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 %dn",
- fbi->fb.fix.id, var->xres);
- if (var->hsync_len < 1 || var->hsync_len > 64)
- printk(KERN_ERR "%s: invalid hsync_len %dn",
- fbi->fb.fix.id, var->hsync_len);
- if (var->left_margin < 1 || var->left_margin > 255)
- printk(KERN_ERR "%s: invalid left_margin %dn",
- fbi->fb.fix.id, var->left_margin);
- if (var->right_margin < 1 || var->right_margin > 255)
- printk(KERN_ERR "%s: invalid right_margin %dn",
- fbi->fb.fix.id, var->right_margin);
- if (var->yres < 1 || var->yres > 1024)
- printk(KERN_ERR "%s: invalid yres %dn",
- fbi->fb.fix.id, var->yres);
- if (var->vsync_len < 1 || var->vsync_len > 64)
- printk(KERN_ERR "%s: invalid vsync_len %dn",
- fbi->fb.fix.id, var->vsync_len);
- if (var->upper_margin < 0 || var->upper_margin > 255)
- printk(KERN_ERR "%s: invalid upper_margin %dn",
- fbi->fb.fix.id, var->upper_margin);
- if (var->lower_margin < 0 || var->lower_margin > 255)
- printk(KERN_ERR "%s: invalid lower_margin %dn",
- 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);
- DPRINTK("nlccr0 = 0x%08xn", new_regs.lccr0);
- DPRINTK("nlccr1 = 0x%08xn", new_regs.lccr1);
- DPRINTK("nlccr2 = 0x%08xn", new_regs.lccr2);
- DPRINTK("nlccr3 = 0x%08xn", 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 onn");
- #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
- #ifdef CONFIG_SA1100_FRODO
- if (machine_is_frodo())
- FRODO_CPLD_GENERAL |= FRODO_LCD_BACKLIGHT;
- #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 offn");
- #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
- #ifdef CONFIG_SA1100_FRODO
- if (machine_is_frodo())
- FRODO_CPLD_GENERAL &= ~FRODO_LCD_BACKLIGHT;
- #endif
- }
- static void sa1100fb_power_up_lcd(struct sa1100fb_info *fbi)
- {
- DPRINTK("LCD power onn");
- #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
- if (machine_is_h3xxx())
- set_h3600_egpio( IPAQ_EGPIO_LCD_ON ); /* Turn on power to the LCD */
- #ifdef CONFIG_SA1100_STORK
- if (machine_is_stork()) {
- storkSetLCDCPLD(0, 1);
- storkSetLatchA(STORK_LCD_BACKLIGHT_INVERTER_ON);
- }
- #endif
- #ifdef CONFIG_SA1100_FRODO
- if (machine_is_frodo())
- sa1100fb_backlight_on(fbi);
- #endif
- }
- static void sa1100fb_power_down_lcd(struct sa1100fb_info *fbi)
- {
- DPRINTK("LCD power offn");
- #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
- if (machine_is_h3xxx())
- clr_h3600_egpio( IPAQ_EGPIO_LCD_ON );
- #ifdef CONFIG_SA1100_STORK
- if (machine_is_stork()) {
- storkSetLCDCPLD(0, 0);
- storkClearLatchA(STORK_LCD_BACKLIGHT_INVERTER_ON);
- }
- #endif
- #ifdef CONFIG_SA1100_FRODO
- if (machine_is_frodo())
- sa1100fb_backlight_off(fbi);
- #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 controllern");
- /*
- * 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
- if (machine_is_shannon()) {
- GPDR |= SHANNON_GPIO_DISP_EN;
- GPSR |= SHANNON_GPIO_DISP_EN;
- }
- DPRINTK("DBAR1 = %pn", DBAR1);
- DPRINTK("DBAR2 = %pn", DBAR2);
- DPRINTK("LCCR0 = 0x%08xn", LCCR0);
- DPRINTK("LCCR1 = 0x%08xn", LCCR1);
- DPRINTK("LCCR2 = 0x%08xn", LCCR2);
- DPRINTK("LCCR3 = 0x%08xn", LCCR3);
- }
- static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
- {
- DECLARE_WAITQUEUE(wait, current);
- DPRINTK("Disabling LCD controllern");
- #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 controllern");
- BCR_clear(BCR_TFT_ENA + BCR_CCFL_POW + BCR_PWM_BACKLIGHT);
- }
- #endif
- if (machine_is_shannon()) {
- GPCR |= SHANNON_GPIO_DISP_EN;
- }
- 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 && old_state != C_DISABLE_PM) {
- fbi->state = state;
- sa1100fb_disable_controller(fbi);
- }
- break;
- case C_DISABLE_PM:
- 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_PM:
- /*
- * Re-enable the controller after PM. This is not
- * perfect - think about the case where we were doing
- * a clock change, and we suspended half-way through.
- */
- if (old_state != C_DISABLE_PM)
- break;
- /* fall through */
- 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 kHzn", 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: %dn", req);
- if (req == PM_SUSPEND || req == PM_RESUME) {
- int state = (int)data;
- if (state == 0) {
- /* Enter D0. */
- set_ctrlr_state(fbi, C_ENABLE_PM);
- } else {
- /* Enter D1-D3. Disable the LCD controller. */
- set_ctrlr_state(fbi, C_DISABLE_PM);
- }
- }
- DPRINTK("donen");
- 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,
- "LCD", fbi);
- if (ret) {
- printk(KERN_ERR "sa1100fb: request_irq failed: %dn", 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");