Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1574 insertions, 0 deletions

diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c
new file mode 100644
index 00000000000..4f8043a71f2
--- /dev/null
+++ b/drivers/video/sa1100fb.c
@@ -0,0 +1,1574 @@
+/*
+ *  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.
+ */
+
+#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/init.h>
+#include <linux/ioport.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.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>
+
+/*
+ * debugging?
+ */
+#define DEBUG 0
+/*
+ * Complain if VAR is out of range.
+ */
+#define DEBUG_VAR 1
+
+#undef ASSABET_PAL_VIDEO
+
+#include "sa1100fb.h"
+
+extern void (*sa1100fb_backlight_power)(int on);
+extern void (*sa1100fb_lcd_power)(int on);
+
+/*
+ * 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,
+
+	.lccr0		= LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+	.lccr3		= LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(512),
+};
+#endif
+#endif
+
+#ifdef CONFIG_SA1100_H3800
+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,
+
+	.cmap_static	= 1,
+
+	.lccr0		= LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+	.lccr3		= LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
+};
+#endif
+
+#ifdef CONFIG_SA1100_H3600
+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,
+
+	.cmap_static	= 1,
+
+	.lccr0		= LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+	.lccr3		= LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
+};
+
+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_H3100
+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_COLLIE
+static struct sa1100fb_mach_info collie_info __initdata = {
+	.pixclock	= 171521,	.bpp		= 16,
+	.xres		= 320,		.yres		= 240,
+
+	.hsync_len	= 5,		.vsync_len	= 1,
+	.left_margin	= 11,		.upper_margin	= 2,
+	.right_margin	= 30,		.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),
+};
+#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,
+
+	.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,
+
+	.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
+
+
+
+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_H3100
+	if (machine_is_h3100()) {
+		inf = &h3100_info;
+	}
+#endif
+#ifdef CONFIG_SA1100_H3600
+	if (machine_is_h3600()) {
+		inf = &h3600_info;
+		fbi->rgb[RGB_16] = &h3600_rgb_16;
+	}
+#endif
+#ifdef CONFIG_SA1100_H3800
+	if (machine_is_h3800()) {
+		inf = &h3800_info;
+	}
+#endif
+#ifdef CONFIG_SA1100_COLLIE
+	if (machine_is_collie()) {
+		inf = &collie_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_SHANNON
+	if (machine_is_shannon()) {
+		inf = &shannon_info;
+	}
+#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_work(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_work(&fbi->task);
+	}
+	local_irq_restore(flags);
+}
+
+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) {
+	case 4:  ret = 0 << 12;	break;
+	case 8:  ret = 1 << 12; break;
+	case 16: ret = 2 << 12; break;
+	}
+	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;
+	unsigned 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 (fbi->cmap_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.fix.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) {
+			u32 *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.  If we hit this, it means we're
+ *    doing nothing but LCD DMA.
+ */
+static unsigned int sa1100fb_display_dma_period(struct fb_var_screeninfo *var)
+{
+	/*
+	 * Period = pixclock * bits_per_byte * bytes_per_transfer
+	 *		/ memory_bits_per_pixel;
+	 */
+	return var->pixclock * 8 * 16 / var->bits_per_pixel;
+}
+
+/*
+ *  sa1100fb_check_var():
+ *    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_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+	int rgbidx;
+
+	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 = max(var->xres_virtual, var->xres);
+	var->yres_virtual = max(var->yres_virtual, var->yres);
+
+	DPRINTK("var->bits_per_pixel=%d\n", var->bits_per_pixel);
+	switch (var->bits_per_pixel) {
+	case 4:
+		rgbidx = RGB_8;
+		break;
+	case 8:
+		rgbidx = RGB_8;
+		break;
+	case 16:
+		rgbidx = RGB_16;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/*
+	 * Copy the RGB parameters for this display
+	 * from the machine specific parameters.
+	 */
+	var->red    = fbi->rgb[rgbidx]->red;
+	var->green  = fbi->rgb[rgbidx]->green;
+	var->blue   = fbi->rgb[rgbidx]->blue;
+	var->transp = fbi->rgb[rgbidx]->transp;
+
+	DPRINTK("RGBT length = %d:%d:%d:%d\n",
+		var->red.length, var->green.length, var->blue.length,
+		var->transp.length);
+
+	DPRINTK("RGBT offset = %d:%d:%d:%d\n",
+		var->red.offset, var->green.offset, var->blue.offset,
+		var->transp.offset);
+
+#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 0;
+}
+
+static inline void sa1100fb_set_truecolor(u_int 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
+	}
+}
+
+/*
+ * sa1100fb_set_par():
+ *	Set the user defined part of the display for the specified console
+ */
+static int sa1100fb_set_par(struct fb_info *info)
+{
+	struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+	struct fb_var_screeninfo *var = &info->var;
+	unsigned long palette_mem_size;
+
+	DPRINTK("set_par\n");
+
+	if (var->bits_per_pixel == 16)
+		fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+	else if (!fbi->cmap_static)
+		fbi->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
+	else {
+		/*
+		 * Some people have weird ideas about wanting static
+		 * pseudocolor maps.  I suspect their user space
+		 * applications are broken.
+		 */
+		fbi->fb.fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
+	}
+
+	fbi->fb.fix.line_length = var->xres_virtual *
+				  var->bits_per_pixel / 8;
+	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;
+
+	/*
+	 * Set (any) board control register to handle new color depth
+	 */
+	sa1100fb_set_truecolor(fbi->fb.fix.visual == FB_VISUAL_TRUECOLOR);
+	sa1100fb_activate_var(var, fbi);
+
+	return 0;
+}
+
+#if 0
+static int
+sa1100fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+		  struct fb_info *info)
+{
+	struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+
+	/*
+	 * Make sure the user isn't doing something stupid.
+	 */
+	if (!kspc && (fbi->fb.var.bits_per_pixel == 16 || fbi->cmap_static))
+		return -EINVAL;
+
+	return gen_set_cmap(cmap, kspc, con, info);
+}
+#endif
+
+/*
+ * 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 int sa1100fb_blank(int blank, struct fb_info *info)
+{
+	struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+	int i;
+
+	DPRINTK("sa1100fb_blank: blank=%d\n", blank);
+
+	switch (blank) {
+	case FB_BLANK_POWERDOWN:
+	case FB_BLANK_VSYNC_SUSPEND:
+	case FB_BLANK_HSYNC_SUSPEND:
+	case FB_BLANK_NORMAL:
+		if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR ||
+		    fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
+			for (i = 0; i < fbi->palette_size; i++)
+				sa1100fb_setpalettereg(i, 0, 0, 0, 0, info);
+		sa1100fb_schedule_work(fbi, C_DISABLE);
+		break;
+
+	case FB_BLANK_UNBLANK:
+		if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR ||
+		    fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
+			fb_set_cmap(&fbi->fb.cmap, info);
+		sa1100fb_schedule_work(fbi, C_ENABLE);
+	}
+	return 0;
+}
+
+static int sa1100fb_mmap(struct fb_info *info, struct file *file,
+			 struct vm_area_struct *vma)
+{
+	struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+	unsigned long start, len, off = vma->vm_pgoff << PAGE_SHIFT;
+
+	if (off < info->fix.smem_len) {
+		vma->vm_pgoff += 1; /* skip over the palette */
+		return dma_mmap_writecombine(fbi->dev, vma, fbi->map_cpu,
+					     fbi->map_dma, fbi->map_size);
+	}
+
+	start = info->fix.mmio_start;
+	len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len);
+
+	if ((vma->vm_end - vma->vm_start + off) > len)
+		return -EINVAL;
+
+	off += start & PAGE_MASK;
+	vma->vm_pgoff = off >> PAGE_SHIFT;
+	vma->vm_flags |= VM_IO;
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+	return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
+				   vma->vm_end - vma->vm_start,
+				   vma->vm_page_prot);
+}
+
+static struct fb_ops sa1100fb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_check_var	= sa1100fb_check_var,
+	.fb_set_par	= sa1100fb_set_par,
+//	.fb_set_cmap	= sa1100fb_set_cmap,
+	.fb_setcolreg	= sa1100fb_setcolreg,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+	.fb_blank	= sa1100fb_blank,
+	.fb_cursor	= soft_cursor,
+	.fb_mmap	= sa1100fb_mmap,
+};
+
+/*
+ * Calculate the PCD value from the clock rate (in picoseconds).
+ * We take account of the PPCR clock setting.
+ */
+static inline unsigned int get_pcd(unsigned int pixclock, unsigned int cpuclock)
+{
+	unsigned int pcd = cpuclock / 100;
+
+	pcd *= pixclock;
+	pcd /= 10000000;
+
+	return pcd + 1;	/* make up for integer math truncations */
+}
+
+/*
+ * 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;
+	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);
+
+	pcd = get_pcd(var->pixclock, cpufreq_get(0));
+	new_regs.lccr3 = LCCR3_PixClkDiv(pcd) | fbi->lccr3 |
+		(var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) |
+		(var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL);
+
+	DPRINTK("nlccr0 = 0x%08lx\n", new_regs.lccr0);
+	DPRINTK("nlccr1 = 0x%08lx\n", new_regs.lccr1);
+	DPRINTK("nlccr2 = 0x%08lx\n", new_regs.lccr2);
+	DPRINTK("nlccr3 = 0x%08lx\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_work(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
+ */
+static inline void __sa1100fb_backlight_power(struct sa1100fb_info *fbi, int on)
+{
+	DPRINTK("backlight o%s\n", on ? "n" : "ff");
+
+	if (sa1100fb_backlight_power)
+		sa1100fb_backlight_power(on);
+}
+
+static inline void __sa1100fb_lcd_power(struct sa1100fb_info *fbi, int on)
+{
+	DPRINTK("LCD power o%s\n", on ? "n" : "ff");
+
+	if (sa1100fb_lcd_power)
+		sa1100fb_lcd_power(on);
+}
+
+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;
+
+	}
+
+	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;
+
+	if (machine_is_shannon()) {
+		GPDR |= SHANNON_GPIO_DISP_EN;
+		GPSR |= SHANNON_GPIO_DISP_EN;
+	}
+
+	DPRINTK("DBAR1 = 0x%08x\n", DBAR1);
+	DPRINTK("DBAR2 = 0x%08x\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");
+
+	if (machine_is_shannon()) {
+		GPCR |= SHANNON_GPIO_DISP_EN;
+	}	
+
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	add_wait_queue(&fbi->ctrlr_wait, &wait);
+
+	LCSR = 0xffffffff;	/* Clear LCD Status Register */
+	LCCR0 &= ~LCCR0_LDM;	/* Enable LCD Disable Done Interrupt */
+	LCCR0 &= ~LCCR0_LEN;	/* Disable LCD Controller */
+
+	schedule_timeout(20 * HZ / 1000);
+	remove_wait_queue(&fbi->ctrlr_wait, &wait);
+}
+
+/*
+ *  sa1100fb_handle_irq: Handle 'LCD DONE' interrupts.
+ */
+static irqreturn_t 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;
+	return IRQ_HANDLED;
+}
+
+/*
+ * 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;
+
+	/*
+	 * Hack around fbcon initialisation.
+	 */
+	if (old_state == C_STARTUP && state == C_REENABLE)
+		state = C_ENABLE;
+
+	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_power(fbi, 0);
+			if (old_state != C_DISABLE_CLKCHANGE)
+				sa1100fb_disable_controller(fbi);
+			__sa1100fb_lcd_power(fbi, 0);
+		}
+		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_lcd_power(fbi, 1);
+			sa1100fb_enable_controller(fbi);
+			__sa1100fb_backlight_power(fbi, 1);
+		}
+		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)
+{
+#if 0
+	unsigned int min_period = (unsigned int)-1;
+	int i;
+
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
+		struct display *disp = &fb_display[i];
+		unsigned int period;
+
+		/*
+		 * Do we own this display?
+		 */
+		if (disp->fb_info != &fbi->fb)
+			continue;
+
+		/*
+		 * Ok, calculate its DMA period
+		 */
+		period = sa1100fb_display_dma_period(&disp->var);
+		if (period < min_period)
+			min_period = period;
+	}
+
+	return min_period;
+#else
+	/*
+	 * FIXME: we need to verify _all_ consoles.
+	 */
+	return sa1100fb_display_dma_period(&fbi->fb.var);
+#endif
+}
+
+/*
+ * 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_freq_transition(struct notifier_block *nb, unsigned long val,
+			 void *data)
+{
+	struct sa1100fb_info *fbi = TO_INF(nb, freq_transition);
+	struct cpufreq_freqs *f = data;
+	u_int pcd;
+
+	switch (val) {
+	case CPUFREQ_PRECHANGE:
+		set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE);
+		break;
+
+	case CPUFREQ_POSTCHANGE:
+		pcd = get_pcd(fbi->fb.var.pixclock, f->new);
+		fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | LCCR3_PixClkDiv(pcd);
+		set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE);
+		break;
+	}
+	return 0;
+}
+
+static int
+sa1100fb_freq_policy(struct notifier_block *nb, unsigned long val,
+		     void *data)
+{
+	struct sa1100fb_info *fbi = TO_INF(nb, freq_policy);
+	struct cpufreq_policy *policy = data;
+
+	switch (val) {
+	case CPUFREQ_ADJUST:
+	case CPUFREQ_INCOMPATIBLE:
+		printk(KERN_DEBUG "min dma period: %d ps, "
+			"new clock %d kHz\n", sa1100fb_min_dma_period(fbi),
+			policy->max);
+		/* todo: fill in min/max values */
+		break;
+	case CPUFREQ_NOTIFY:
+		do {} while(0);
+		/* todo: panic if min/max values aren't fulfilled 
+		 * [can't really happen unless there's a bug in the
+		 * CPU policy verififcation process *
+		 */
+		break;
+	}
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_PM
+/*
+ * Power management hooks.  Note that we won't be called from IRQ context,
+ * unlike the blank functions above, so we may sleep.
+ */
+static int sa1100fb_suspend(struct device *dev, u32 state, u32 level)
+{
+	struct sa1100fb_info *fbi = dev_get_drvdata(dev);
+
+	if (level == SUSPEND_DISABLE || level == SUSPEND_POWER_DOWN)
+		set_ctrlr_state(fbi, C_DISABLE_PM);
+	return 0;
+}
+
+static int sa1100fb_resume(struct device *dev, u32 level)
+{
+	struct sa1100fb_info *fbi = dev_get_drvdata(dev);
+
+	if (level == RESUME_ENABLE)
+		set_ctrlr_state(fbi, C_ENABLE_PM);
+	return 0;
+}
+#else
+#define sa1100fb_suspend	NULL
+#define sa1100fb_resume		NULL
+#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 = dma_alloc_writecombine(fbi->dev, fbi->map_size,
+					      &fbi->map_dma, GFP_KERNEL);
+
+	if (fbi->map_cpu) {
+		fbi->fb.screen_base = fbi->map_cpu + PAGE_SIZE;
+		fbi->screen_dma = fbi->map_dma + PAGE_SIZE;
+		/*
+		 * FIXME: this is actually the wrong thing to place in
+		 * smem_start.  But fbdev suffers from the problem that
+		 * it needs an API which doesn't exist (in this case,
+		 * dma_writecombine_mmap)
+		 */
+		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 = {
+	.hfmin	= 30000,
+	.hfmax	= 70000,
+	.vfmin	= 50,
+	.vfmax	= 65,
+};
+
+
+static struct sa1100fb_info * __init sa1100fb_init_fbinfo(struct device *dev)
+{
+	struct sa1100fb_mach_info *inf;
+	struct sa1100fb_info *fbi;
+
+	fbi = kmalloc(sizeof(struct sa1100fb_info) + sizeof(u32) * 16,
+		      GFP_KERNEL);
+	if (!fbi)
+		return NULL;
+
+	memset(fbi, 0, sizeof(struct sa1100fb_info));
+	fbi->dev = dev;
+
+	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;
+
+	fbi->fb.fbops		= &sa1100fb_ops;
+	fbi->fb.flags		= FBINFO_DEFAULT;
+	fbi->fb.monspecs	= monspecs;
+	fbi->fb.pseudo_palette	= (fbi + 1);
+
+	fbi->rgb[RGB_8]		= &rgb_8;
+	fbi->rgb[RGB_16]	= &def_rgb_16;
+
+	inf = sa1100fb_get_machine_info(fbi);
+
+	/*
+	 * People just don't seem to get this.  We don't support
+	 * anything but correct entries now, so panic if someone
+	 * does something stupid.
+	 */
+	if (inf->lccr3 & (LCCR3_VrtSnchL|LCCR3_HorSnchL|0xff) ||
+	    inf->pixclock == 0)
+		panic("sa1100fb error: invalid LCCR3 fields set or zero "
+			"pixclock.");
+
+	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_STARTUP;
+	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_WORK(&fbi->task, sa1100fb_task, fbi);
+	init_MUTEX(&fbi->ctrlr_sem);
+
+	return fbi;
+}
+
+static int __init sa1100fb_probe(struct device *dev)
+{
+	struct sa1100fb_info *fbi;
+	int ret;
+
+	if (!request_mem_region(0xb0100000, 0x10000, "LCD"))
+		return -EBUSY;
+
+	fbi = sa1100fb_init_fbinfo(dev);
+	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: %d\n", ret);
+		goto failed;
+	}
+
+#ifdef ASSABET_PAL_VIDEO
+	if (machine_is_assabet())
+		ASSABET_BCR_clear(ASSABET_BCR_LCD_ON);
+#endif
+
+	/*
+	 * This makes sure that our colour bitfield
+	 * descriptors are correctly initialised.
+	 */
+	sa1100fb_check_var(&fbi->fb.var, &fbi->fb);
+
+	dev_set_drvdata(dev, fbi);
+
+	ret = register_framebuffer(&fbi->fb);
+	if (ret < 0)
+		goto failed;
+
+#ifdef CONFIG_CPU_FREQ
+	fbi->freq_transition.notifier_call = sa1100fb_freq_transition;
+	fbi->freq_policy.notifier_call = sa1100fb_freq_policy;
+	cpufreq_register_notifier(&fbi->freq_transition, CPUFREQ_TRANSITION_NOTIFIER);
+	cpufreq_register_notifier(&fbi->freq_policy, CPUFREQ_POLICY_NOTIFIER);
+#endif
+
+	/* This driver cannot be unloaded at the moment */
+	return 0;
+
+failed:
+	dev_set_drvdata(dev, NULL);
+	kfree(fbi);
+	release_mem_region(0xb0100000, 0x10000);
+	return ret;
+}
+
+static struct device_driver sa1100fb_driver = {
+	.name		= "sa11x0-fb",
+	.bus		= &platform_bus_type,
+	.probe		= sa1100fb_probe,
+	.suspend	= sa1100fb_suspend,
+	.resume		= sa1100fb_resume,
+};
+
+int __init sa1100fb_init(void)
+{
+	if (fb_get_options("sa1100fb", NULL))
+		return -ENODEV;
+
+	return driver_register(&sa1100fb_driver);
+}
+
+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_init(sa1100fb_init);
+MODULE_DESCRIPTION("StrongARM-1100/1110 framebuffer driver");
+MODULE_LICENSE("GPL");