patch-2.4.9 linux/drivers/video/sa1100fb.c
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- Lines: 3374
- Date:
Sun Aug 12 17:37:53 2001
- Orig file:
v2.4.8/linux/drivers/video/sa1100fb.c
- Orig date:
Wed Apr 18 11:49:12 2001
diff -u --recursive --new-file v2.4.8/linux/drivers/video/sa1100fb.c linux/drivers/video/sa1100fb.c
@@ -1,59 +1,135 @@
/*
- * linux/drivers/video/sa1100fb.c -- StrongARM 1100 LCD Controller Frame Buffer Device
+ * 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.
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
*
- */
-
-
-/*
- * Code Status:
+ * 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.
+ *
+ *
+ * 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.
- *
+ * - 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.
+ * - 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.
*
- * 2000/04/10:
- * Big cleanup for dynamic selection of machine type at run time.
- * Nicolas Pitre <nico@cam.org>
- *
- * 2000/07/19:
- * Support for Bitsy aka Compaq iPAQ H3600 added.
- * Jamey Hicks <jamey@crl.dec.com>
- *
- * 2000/08/07:
- * 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.
- * Tak-Shing Chan <tchan.rd@idthk.com>
- * Jeff Sutherland <jsutherland@accelent.com>
- *
- * 2000/08/09:
- * XP860 support added
- * Kunihiko IMAI <imai@vasara.co.jp>
- *
- * 2000/08/19:
- * Allows standard options to be passed on the kernel command line
- * for most common passive displays.
- * Mark Huang <mhuang@livetoy.com>
+ * 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
+ * - 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.
*/
#include <linux/config.h>
@@ -62,21 +138,19 @@
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
-#include <linux/ctype.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
+#include <linux/interrupt.h>
#include <linux/slab.h>
-#include <linux/init.h>
#include <linux/fb.h>
#include <linux/delay.h>
-#include <linux/wrapper.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/proc/pgtable.h>
#include <video/fbcon.h>
#include <video/fbcon-mfb.h>
@@ -84,328 +158,902 @@
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
+/*
+ * enable this if your panel appears to have broken
+ */
+#undef CHECK_COMPAT
/*
- * Debug macros
+ * debugging?
*/
-//#define DEBUG
-#ifdef DEBUG
-# define DPRINTK(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ## args)
-#else
-# define DPRINTK(fmt, args...)
-#endif
+#define DEBUG 0
+/*
+ * Complain if VAR is out of range.
+ */
+#define DEBUG_VAR 1
+#undef ASSABET_PAL_VIDEO
-/* Memory size macros for determining required FrameBuffer size */
-#define MAX_PALETTE_NUM_ENTRIES 256
-#define MAX_PALETTE_MEM_SIZE (MAX_PALETTE_NUM_ENTRIES * 2)
-#define MAX_PIXEL_MEM_SIZE \
- ((current_par.max_xres * current_par.max_yres * current_par.max_bpp)/8)
-#define MAX_FRAMEBUFFER_MEM_SIZE \
- (MAX_PIXEL_MEM_SIZE + MAX_PALETTE_MEM_SIZE + 32)
-#define ALLOCATED_FB_MEM_SIZE \
- (PAGE_ALIGN(MAX_FRAMEBUFFER_MEM_SIZE + PAGE_SIZE * 2))
+#include "sa1100fb.h"
-#define SA1100_PALETTE_MEM_SIZE(bpp) (((bpp)==8?256:16)*2)
-#define SA1100_PALETTE_MODE_VAL(bpp) (((bpp) & 0x018) << 9)
+void (*sa1100fb_blank_helper)(int blank);
+EXPORT_SYMBOL(sa1100fb_blank_helper);
-/* Minimum X and Y resolutions */
-#define MIN_XRES 64
-#define MIN_YRES 64
-/* Possible controller_state modes */
-#define LCD_MODE_DISABLED 0 // Controller is disabled and Disable Done received
-#define LCD_MODE_DISABLE_BEFORE_ENABLE 1 // Re-enable after Disable Done IRQ is received
-#define LCD_MODE_ENABLED 2 // Controller is enabled
+#ifdef CHECK_COMPAT
+static void
+sa1100fb_check_shadow(struct sa1100fb_lcd_reg *new_regs,
+ struct fb_var_screeninfo *var, u_int pcd)
+{
+ struct sa1100fb_lcd_reg shadow;
+ int different = 0;
-#define SA1100_NAME "SA1100"
-#define NR_MONTYPES 1
+ /*
+ * These machines are good machines!
+ */
+ if (machine_is_assabet() || machine_is_bitsy())
+ return;
-static inline void
-sa1100fb_assabet_set_truecolor(u_int is_true_color)
-{
-#ifdef CONFIG_SA1100_ASSABET
+ /*
+ * The following ones are bad, bad, bad.
+ * Please make yours good!
+ */
+ if (machine_is_pangolin()) {
+ DPRINTK("Configuring Pangolin LCD\n");
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_LDM +
+ LCCR0_BAM + LCCR0_ERM + LCCR0_Act +
+ LCCR0_LtlEnd + LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(64) +
+ LCCR1_BegLnDel(160) + LCCR1_EndLnDel(24);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(7) +
+ LCCR2_BegFrmDel(7) + LCCR2_EndFrmDel(1);
+ shadow.lccr3 =
+ LCCR3_PixClkDiv(pcd) + LCCR3_HorSnchH +
+ LCCR3_VrtSnchH + LCCR3_PixFlEdg + LCCR3_OutEnH;
+
+ DPRINTK("pcd = %x, PixCldDiv(pcd)=%x\n",
+ pcd, LCCR3_PixClkDiv(pcd));
+ }
+ if (machine_is_freebird()) {
+ DPRINTK("Configuring Freebird LCD\n");
#if 1
- // phase 4 or newer Assabet's
- if (is_true_color)
- BCR_set(BCR_LCD_12RGB);
- else
- BCR_clear(BCR_LCD_12RGB);
+ shadow.lccr0 = 0x00000038;
+ shadow.lccr1 = 0x010108e0;
+ shadow.lccr2 = 0x0000053f;
+ shadow.lccr3 = 0x00000c20;
#else
- // older Assabet's
- if (is_true_color)
- BCR_clear(BCR_LCD_12RGB);
- else
- BCR_set(BCR_LCD_12RGB);
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl +
+ LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + LCCR0_Pas +
+ LCCR0_LtlEnd + LCCR0_DMADel(0);
+ /* Check ,Chester */
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(5) +
+ LCCR1_BegLnDel(61) + LCCR1_EndLnDel(9);
+ /* Check ,Chester */
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
+ LCCR2_BegFrmDel(3) + LCCR2_EndFrmDel(0);
+ /* Check ,Chester */
+ shadow.lccr3 =
+ LCCR3_OutEnH + LCCR3_PixFlEdg + LCCR3_VrtSnchH +
+ LCCR3_HorSnchH + LCCR3_ACBsCntOff +
+ LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(pcd);
+#endif
+ }
+ if (machine_is_brutus()) {
+ DPRINTK("Configuring Brutus LCD\n");
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Pas +
+ LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM +
+ LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(3) +
+ LCCR1_BegLnDel(41) + LCCR1_EndLnDel(101);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
+ LCCR2_BegFrmDel(0) + LCCR2_EndFrmDel(0);
+ shadow.lccr3 =
+ LCCR3_OutEnH + LCCR3_PixRsEdg + LCCR3_VrtSnchH +
+ LCCR3_HorSnchH + LCCR3_ACBsCntOff +
+ LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(44);
+ }
+ if (machine_is_huw_webpanel()) {
+ DPRINTK("Configuring HuW LCD\n");
+ shadow.lccr0 = LCCR0_LEN + LCCR0_Dual + LCCR0_LDM;
+ shadow.lccr1 = LCCR1_DisWdth(var->xres) +
+ LCCR1_HorSnchWdth(3) +
+ LCCR1_BegLnDel(41) + LCCR1_EndLnDel(101);
+ shadow.lccr2 = 239 + LCCR2_VrtSnchWdth(1);
+ shadow.lccr3 = 8 + LCCR3_OutEnH +
+ LCCR3_PixRsEdg + LCCR3_VrtSnchH +
+ LCCR3_HorSnchH + LCCR3_ACBsCntOff + LCCR3_ACBsDiv(2);
+ }
+#ifdef CONFIG_SA1100_CERF
+ if (machine_is_cerf()) {
+ DPRINTK("Configuring Cerf LCD\n");
+#if defined (CONFIG_CERF_LCD_72_A)
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Dual +
+ LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + LCCR0_Pas +
+ LCCR0_LtlEnd + LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(5) +
+ LCCR1_BegLnDel(61) + LCCR1_EndLnDel(9);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres / 2) + LCCR2_VrtSnchWdth(1) +
+ LCCR2_BegFrmDel(3) + LCCR2_EndFrmDel(0);
+ shadow.lccr3 =
+ LCCR3_OutEnH + LCCR3_PixRsEdg + LCCR3_VrtSnchH +
+ LCCR3_HorSnchH + LCCR3_ACBsCntOff +
+ LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(38);
+#elif defined (CONFIG_CERF_LCD_57_A)
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl +
+ LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + LCCR0_Pas +
+ LCCR0_LtlEnd + LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(5) +
+ LCCR1_BegLnDel(61) + LCCR1_EndLnDel(9);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
+ LCCR2_BegFrmDel(3) + LCCR2_EndFrmDel(0);
+ shadow.lccr3 =
+ LCCR3_OutEnH + LCCR3_PixRsEdg + LCCR3_VrtSnchH +
+ LCCR3_HorSnchH + LCCR3_ACBsCntOff +
+ LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(38);
+#elif defined (CONFIG_CERF_LCD_38_A)
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl +
+ LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + LCCR0_Pas +
+ LCCR0_LtlEnd + LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(5) +
+ LCCR1_BegLnDel(61) + LCCR1_EndLnDel(9);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
+ LCCR2_BegFrmDel(3) + LCCR2_EndFrmDel(0);
+ shadow.lccr3 =
+ LCCR3_OutEnH + LCCR3_PixRsEdg + LCCR3_VrtSnchH +
+ LCCR3_HorSnchH + LCCR3_ACBsCntOff +
+ LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(38);
+#else
+#error "Must have a CerfBoard LCD form factor selected"
+#endif
+ }
+#endif
+ if (machine_is_lart()) {
+ DPRINTK("Configuring LART LCD\n");
+#if defined LART_GREY_LCD
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Mono + LCCR0_Sngl + LCCR0_Pas +
+ LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM +
+ LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(1) +
+ LCCR1_BegLnDel(4) + LCCR1_EndLnDel(2);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
+ LCCR2_BegFrmDel(0) + LCCR2_EndFrmDel(0);
+ shadow.lccr3 =
+ LCCR3_PixClkDiv(34) + LCCR3_ACBsDiv(512) +
+ LCCR3_ACBsCntOff + LCCR3_HorSnchH + LCCR3_VrtSnchH;
+#endif
+#if defined LART_COLOR_LCD
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act +
+ LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM +
+ LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(2) +
+ LCCR1_BegLnDel(69) + LCCR1_EndLnDel(8);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(3) +
+ LCCR2_BegFrmDel(14) + LCCR2_EndFrmDel(4);
+ shadow.lccr3 =
+ LCCR3_PixClkDiv(34) + LCCR3_ACBsDiv(512) +
+ LCCR3_ACBsCntOff + LCCR3_HorSnchL + LCCR3_VrtSnchL +
+ LCCR3_PixFlEdg;
#endif
+#if defined LART_VIDEO_OUT
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act +
+ LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM +
+ LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(640) + LCCR1_HorSnchWdth(95) +
+ LCCR1_BegLnDel(40) + LCCR1_EndLnDel(24);
+ shadow.lccr2 =
+ LCCR2_DisHght(480) + LCCR2_VrtSnchWdth(2) +
+ LCCR2_BegFrmDel(32) + LCCR2_EndFrmDel(11);
+ shadow.lccr3 =
+ LCCR3_PixClkDiv(8) + LCCR3_ACBsDiv(512) +
+ LCCR3_ACBsCntOff + LCCR3_HorSnchH + LCCR3_VrtSnchH +
+ LCCR3_PixFlEdg + LCCR3_OutEnL;
#endif
+ }
+ if (machine_is_graphicsclient()) {
+ DPRINTK("Configuring GraphicsClient LCD\n");
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act;
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(9) +
+ LCCR1_EndLnDel(54) + LCCR1_BegLnDel(54);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(9) +
+ LCCR2_EndFrmDel(32) + LCCR2_BegFrmDel(24);
+ shadow.lccr3 =
+ LCCR3_PixClkDiv(10) + LCCR3_ACBsDiv(2) +
+ LCCR3_ACBsCntOff + LCCR3_HorSnchL + LCCR3_VrtSnchL;
+ }
+ if (machine_is_omnimeter()) {
+ DPRINTK("Configuring OMNI LCD\n");
+ shadow.lccr0 = LCCR0_LEN | LCCR0_CMS | LCCR0_DPD;
+ shadow.lccr1 =
+ LCCR1_BegLnDel(10) + LCCR1_EndLnDel(10) +
+ LCCR1_HorSnchWdth(1) + LCCR1_DisWdth(var->xres);
+ shadow.lccr2 = LCCR2_DisHght(var->yres);
+ shadow.lccr3 =
+ LCCR3_ACBsDiv(0xFF) + LCCR3_PixClkDiv(44);
+//jca (GetPCD(25) << LCD3_V_PCD);
+ }
+ if (machine_is_xp860()) {
+ DPRINTK("Configuring XP860 LCD\n");
+ shadow.lccr0 =
+ LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act +
+ LCCR0_LtlEnd + LCCR0_LDM + LCCR0_ERM + LCCR0_DMADel(0);
+ shadow.lccr1 =
+ LCCR1_DisWdth(var->xres) +
+ LCCR1_HorSnchWdth(var->hsync_len) +
+ LCCR1_BegLnDel(var->left_margin) +
+ LCCR1_EndLnDel(var->right_margin);
+ shadow.lccr2 =
+ LCCR2_DisHght(var->yres) +
+ LCCR2_VrtSnchWdth(var->vsync_len) +
+ LCCR2_BegFrmDel(var->upper_margin) +
+ LCCR2_EndFrmDel(var->lower_margin);
+ shadow.lccr3 =
+ LCCR3_PixClkDiv(6) + LCCR3_HorSnchL + LCCR3_VrtSnchL;
+ }
+
+ /*
+ * Ok, since we're calculating these values, we want to know
+ * if the calculation is correct. If you see any of these
+ * messages _PLEASE_ report the incident to me for diagnosis,
+ * including details about what was happening when the
+ * messages appeared. --rmk, 30 March 2001
+ */
+ if (shadow.lccr0 != new_regs->lccr0) {
+ printk(KERN_ERR "LCCR1 mismatch: 0x%08x != 0x%08x\n",
+ shadow.lccr1, new_regs->lccr1);
+ different = 1;
+ }
+ if (shadow.lccr1 != new_regs->lccr1) {
+ printk(KERN_ERR "LCCR1 mismatch: 0x%08x != 0x%08x\n",
+ shadow.lccr1, new_regs->lccr1);
+ different = 1;
+ }
+ if (shadow.lccr2 != new_regs->lccr2) {
+ printk(KERN_ERR "LCCR2 mismatch: 0x%08x != 0x%08x\n",
+ shadow.lccr2, new_regs->lccr2);
+ different = 1;
+ }
+ if (shadow.lccr3 != new_regs->lccr3) {
+ printk(KERN_ERR "LCCR3 mismatch: 0x%08x != 0x%08x\n",
+ shadow.lccr3, new_regs->lccr3);
+ different = 1;
+ }
+ if (different) {
+ printk(KERN_ERR "var: xres=%d hslen=%d lm=%d rm=%d\n",
+ var->xres, var->hsync_len,
+ var->left_margin, var->right_margin);
+ printk(KERN_ERR "var: yres=%d vslen=%d um=%d bm=%d\n",
+ var->yres, var->vsync_len,
+ var->upper_margin, var->lower_margin);
+
+ printk(KERN_ERR "Please report this to Russell King "
+ "<rmk@arm.linux.org.uk>\n");
+ }
+
+ DPRINTK("olccr0 = 0x%08x\n", shadow.lccr0);
+ DPRINTK("olccr1 = 0x%08x\n", shadow.lccr1);
+ DPRINTK("olccr2 = 0x%08x\n", shadow.lccr2);
+ DPRINTK("olccr3 = 0x%08x\n", shadow.lccr3);
}
+#else
+#define sa1100fb_check_shadow(regs,var,pcd)
+#endif
+
-static u_char *VideoMemRegion;
-static u_char *VideoMemRegion_phys;
-/* Local LCD controller parameters */
-/* These can be reduced by making better use of fb_var_screeninfo parameters. */
-/* Several duplicates exist in the two structures. */
-struct sa1100fb_par {
- u_char *p_screen_base;
- u_char *v_screen_base;
- u_short *p_palette_base;
- u_short *v_palette_base;
- unsigned long screen_size;
- unsigned int palette_size;
- unsigned int max_xres;
- unsigned int max_yres;
- unsigned int xres;
- unsigned int yres;
- unsigned int xres_virtual;
- unsigned int yres_virtual;
- unsigned int max_bpp;
- unsigned int bits_per_pixel;
- signed int montype;
- unsigned int currcon;
- unsigned int visual;
- unsigned int allow_modeset : 1;
- unsigned int active_lcd : 1;
- unsigned int inv_4bpp : 1;
- volatile u_char controller_state;
+/*
+ * 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, },
};
-/* Shadows for LCD controller registers */
-struct sa1100fb_lcd_reg {
- Address dbar1;
- Address dbar2;
- Word lccr0;
- Word lccr1;
- Word lccr2;
- Word lccr3;
+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, },
};
-/* Fake monspecs to fill in fbinfo structure */
-static struct fb_monspecs monspecs __initdata = {
- 30000, 70000, 50, 65, 0 /* Generic */
+#ifdef CONFIG_SA1100_ASSABET
+static struct sa1100fb_mach_info assabet_info __initdata = {
+#ifdef ASSABET_PAL_VIDEO
+ 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),
+#else
+ 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),
+#endif
};
+#endif
-static struct display global_disp; /* Initial (default) Display Settings */
-static struct fb_info fb_info;
-static struct sa1100fb_par current_par;
-static struct fb_var_screeninfo __initdata init_var = {};
-static struct sa1100fb_lcd_reg lcd_shadow;
-
-
-static int sa1100fb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info);
-static int sa1100fb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info);
-static int sa1100fb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info);
-static int sa1100fb_get_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info);
-static int sa1100fb_set_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info);
-
-static int sa1100fb_switch(int con, struct fb_info *info);
-static void sa1100fb_blank(int blank, struct fb_info *info);
-static int sa1100fb_map_video_memory(void);
-static int sa1100fb_activate_var(struct fb_var_screeninfo *var);
-static void sa1100fb_enable_lcd_controller(void);
-static void sa1100fb_disable_lcd_controller(void);
+#ifdef CONFIG_SA1100_BITSY
+static struct sa1100fb_mach_info bitsy_info __initdata = {
+#ifdef CONFIG_IPAQ_H3100
+ pixclock: 0, bpp: 4,
+ xres: 320, yres: 240,
+
+ hsync_len: 26, vsync_len: 41,
+ left_margin: 4, upper_margin: 0,
+ right_margin: 4, lower_margin: 0,
+
+ sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ cmap_greyscale: 1, cmap_static: 1,
+ cmap_inverse: 1,
+
+ lccr0: LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
+ lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
+#error FIXME
+ /*
+ * Sorry, this should have read:
+ * FIXME: please get rid of the PCD and PixClkDiv definitions
+ * in favour of pixclock. --rmk
+ */
+#else
+ pixclock: 5722222, bpp: 16,
+ xres: 320, yres: 240,
-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,
+ hsync_len: 3, vsync_len: 3,
+ left_margin: 12, upper_margin: 10,
+ right_margin: 17, lower_margin: 1,
+
+ sync: 0,
+
+ lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+ lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
+#endif
};
+static struct sa1100fb_rgb bitsy_rgb_16 = {
+ red: { offset: 12, length: 4, },
+ green: { offset: 7, length: 4, },
+ blue: { offset: 1, length: 4, },
+ transp: { offset: 0, length: 0, },
+};
+#endif
-/*
- * sa1100fb_palette_write:
- * Write palette data to the LCD frame buffer's palette area
- */
-static inline void
-sa1100fb_palette_write(u_int regno, u_short pal)
+#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 = {
+ pixclock: 171521, bpp: 8,
+#if defined(CONFIG_CERF_LCD_72_A)
+ 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)
+ 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)
+ xres: 240, yres: 320,
+ lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Pas,
+ lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2) |
+ 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,
+
+};
+#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: 0, 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) |
+ LCCR3_PixClkDiv(10),
+};
+#endif
+
+#ifdef CONFIG_SA1100_HUW_WEBPANEL
+static struct sa1100fb_mach_info huw_webpanel_info __initdata = {
+ pixclock: 0, bpp: 8,
+ xres: 640, yres: 480,
+
+ hsync_len: 3, vsync_len: 1,
+ left_margin: 41, upper_margin: 0,
+ right_margin: 101, lower_margin: 0,
+
+ sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+
+ lccr0: LCCR0_Color | LCCR0_Dual | LCCR0_Pas,
+ lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2) | 8,
+#error FIXME
+ /*
+ * FIXME: please get rid of the '| 8' in preference to an
+ * LCCR3_PixClkDiv() version. --rmk
+ */
+};
+#endif
+
+#ifdef LART_GREY_LCD
+static struct sa1100fb_mach_info lart_grey_info __initdata = {
+ pixclock: 150000, bpp: 4,
+ xres: 320, yres: 240,
+
+ hsync_len: 1, vsync_len: 1,
+ left_margin: 4, upper_margin: 0,
+ right_margin: 2, lower_margin: 0,
+
+ cmap_greyscale: 1,
+ sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+
+ lccr0: LCCR0_Mono | LCCR0_Sngl | LCCR0_Pas | LCCR0_4PixMono,
+ lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(512),
+};
+#endif
+#ifdef LART_COLOR_LCD
+static struct sa1100fb_mach_info lart_color_info __initdata = {
+ pixclock: 150000, bpp: 16,
+ xres: 320, yres: 240,
+
+ hsync_len: 2, vsync_len: 3,
+ left_margin: 69, upper_margin: 14,
+ right_margin: 8, lower_margin: 4,
+
+ sync: 0,
+
+ lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+ lccr3: LCCR3_OutEnH | LCCR3_PixFlEdg | LCCR3_ACBsDiv(512),
+};
+#endif
+#ifdef LART_VIDEO_OUT
+static struct sa1100fb_mach_info lart_video_info __initdata = {
+ pixclock: 39721, bpp: 16,
+ xres: 640, yres: 480,
+
+ hsync_len: 95, vsync_len: 2,
+ left_margin: 40, upper_margin: 32,
+ right_margin: 24, lower_margin: 11,
+
+ sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+
+ lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+ lccr3: LCCR3_OutEnL | LCCR3_PixFlEdg | LCCR3_ACBsDiv(512),
+};
+#endif
+
+#ifdef LART_KIT01_LCD
+static struct sa1100fb_mach_info lart_kit01_info __initdata =
{
- current_par.v_palette_base[regno] = (regno ? pal : pal |
- SA1100_PALETTE_MODE_VAL(current_par.bits_per_pixel));
-}
+ pixclock: 63291, bpp: 16,
+ xres: 640, yres: 480,
+
+ hsync_len: 64, vsync_len: 3,
+ left_margin: 122, upper_margin: 45,
+ right_margin: 10, lower_margin: 10,
+
+ sync: 0,
+
+ lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+ lccr3: LCCR3_OutEnH | LCCR3_PixFlEdg
+};
+#endif
+#ifdef CONFIG_SA1100_OMNIMETER
+static struct sa1100fb_mach_info omnimeter_info __initdata = {
+ pixclock: 0, bpp: 4,
+ xres: 480, yres: 320,
+
+ hsync_len: 1, vsync_len: 1,
+ left_margin: 10, upper_margin: 0,
+ right_margin: 10, lower_margin: 0,
+
+ cmap_greyscale: 1,
+ sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+
+ lccr0: LCCR0_Mono | LCCR0_Sngl | LCCR0_Pas | LCCR0_8PixMono,
+ lccr3: LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(255) |
+ LCCR3_PixClkDiv(44),
+#error FIXME: fix pixclock, ACBsDiv
+ /*
+ * FIXME: I think ACBsDiv is wrong above - should it be 512 (disabled)?
+ * - rmk
+ */
+};
+#endif
+
+#ifdef CONFIG_SA1100_PANGOLIN
+static struct sa1100fb_mach_info pangolin_info __initdata = {
+ pixclock: 341521, bpp: 16,
+ xres: 800, yres: 600,
+
+ hsync_len: 64, vsync_len: 7,
+ left_margin: 160, upper_margin: 7,
+ right_margin: 24, lower_margin: 1,
+
+ sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+
+ lccr0: LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
+ lccr3: LCCR3_OutEnH | LCCR3_PixFlEdg,
+};
+#endif
-static inline u_short
-sa1100fb_palette_encode(u_int regno, u_int red, u_int green, u_int blue, u_int trans)
+#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)
{
- u_int pal;
+ struct sa1100fb_mach_info *inf = NULL;
- if(current_par.bits_per_pixel == 4){
- /*
- * RGB -> luminance is defined to be
- * Y = 0.299 * R + 0.587 * G + 0.114 * B
- */
- pal = (19595 * red + 38470 * green + 7471 * blue) >> 28;
- if( current_par.inv_4bpp )
- pal = 15 - pal;
+ /*
+ * R G B T
+ * default {11,5}, { 5,6}, { 0,5}, { 0,0}
+ * bitsy {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()) {
+ inf = &assabet_info;
}
- else{
- pal = ((red >> 4) & 0xf00);
- pal |= ((green >> 8) & 0x0f0);
- pal |= ((blue >> 12) & 0x00f);
+#endif
+#ifdef CONFIG_SA1100_BITSY
+ if (machine_is_bitsy()) {
+ inf = &bitsy_info;
+ fbi->rgb[RGB_16] = &bitsy_rgb_16;
}
-
- return pal;
-}
-
-static inline u_short
-sa1100fb_palette_read(u_int regno)
-{
- return (current_par.v_palette_base[regno] & 0x0FFF);
+#endif
+#ifdef CONFIG_SA1100_BRUTUS
+ if (machine_is_brutus()) {
+ inf = &brutus_info;
+ }
+#endif
+#ifdef CONFIG_SA1100_CERF
+ if (machine_is_cerf()) {
+ inf = &cerf_info;
+ }
+#endif
+#ifdef CONFIG_SA1100_FREEBIRD
+ if (machine_is_freebird()) {
+ inf = &freebird_info;
+ fbi->rgb[RGB_16] = &freebird_rgb16;
+ }
+#endif
+#ifdef CONFIG_SA1100_GRAPHICSCLIENT
+ if (machine_is_graphicsclient()) {
+ inf = &graphicsclient_info;
+ }
+#endif
+#ifdef CONFIG_SA1100_HUW_WEBPANEL
+ if (machine_is_huw_webpanel()) {
+ inf = &huw_webpanel_info;
+ }
+#endif
+#ifdef CONFIG_SA1100_LART
+ if (machine_is_lart()) {
+#ifdef LART_GREY_LCD
+ inf = &lart_grey_info;
+#endif
+#ifdef LART_COLOR_LCD
+ inf = &lart_color_info;
+#endif
+#ifdef LART_VIDEO_OUT
+ inf = &lart_video_info;
+#endif
+#ifdef LART_KIT01_LCD
+ inf = &lart_kit01_info;
+#endif
+ }
+#endif
+#ifdef CONFIG_SA1100_OMNIMETER
+ if (machine_is_omnimeter()) {
+ inf = &omnimeter_info;
+ }
+#endif
+#ifdef CONFIG_SA1100_PANGOLIN
+ if (machine_is_pangolin()) {
+ inf = &pangolin_info;
+ }
+#endif
+#ifdef CONFIG_SA1100_XP860
+ if (machine_is_xp860()) {
+ inf = &xp860_info;
+ }
+#endif
+ 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 void
-sa1100fb_palette_decode(u_int regno, u_int *red, u_int *green, u_int *blue, u_int *trans)
+static inline void sa1100fb_schedule_task(struct sa1100fb_info *fbi, u_int state)
{
- u_short pal;
+ unsigned long flags;
- pal = sa1100fb_palette_read(regno);
-
- if( current_par.bits_per_pixel == 4){
- if( current_par.inv_4bpp )
- pal = 15 - pal;
- pal &= 0x000f;
- pal |= pal << 4;
- pal |= pal << 8;
- *blue = *green = *red = pal;
- }
- else{
- *blue = (pal & 0x000f) << 12;
- *green = (pal & 0x00f0) << 8;
- *red = (pal & 0x0f00) << 4;
+ 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);
}
- *trans = 0;
+ local_irq_restore(flags);
}
-static int
-sa1100fb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue, u_int *trans, struct fb_info *info)
+/*
+ * Get the VAR structure pointer for the specified console
+ */
+static inline struct fb_var_screeninfo *get_con_var(struct fb_info *info, int con)
{
- if (regno >= current_par.palette_size)
- return 1;
-
- sa1100fb_palette_decode(regno, red, green, blue, trans);
-
- return 0;
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ return (con == fbi->currcon || con == -1) ? &fbi->fb.var : &fb_display[con].var;
}
-
-static int
-sa1100fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int trans, struct fb_info *info)
+/*
+ * Get the DISPLAY structure pointer for the specified console
+ */
+static inline struct display *get_con_display(struct fb_info *info, int con)
{
- u_short pal;
-
- if (regno >= current_par.palette_size)
- return 1;
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ return (con < 0) ? fbi->fb.disp : &fb_display[con];
+}
- pal = sa1100fb_palette_encode(regno, red, green, blue, trans);
+/*
+ * 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;
+}
- sa1100fb_palette_write(regno, pal);
+static inline u_int
+chan_to_field(u_int chan, struct fb_bitfield *bf)
+{
+ chan &= 0xffff;
+ chan >>= 16 - bf->length;
+ return chan << bf->offset;
+}
- return 0;
+/*
+ * 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_get_cmap(struct fb_cmap *cmap, int kspc, int con,
- struct fb_info *info)
+sa1100fb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int trans, struct fb_info *info)
{
- int err = 0;
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ u_int val, ret = 1;
- DPRINTK("current_par.visual=%d\n", current_par.visual);
- if (con == current_par.currcon)
- err = fb_get_cmap(cmap, kspc, sa1100fb_getcolreg, info);
- else if (fb_display[con].cmap.len)
- fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
- else
- fb_copy_cmap(fb_default_cmap(current_par.palette_size),
- cmap, kspc ? 0 : 2);
- return err;
+ 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_set_cmap(struct fb_cmap *cmap, int kspc, int con,
- struct fb_info *info)
+sa1100fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int trans, struct fb_info *info)
{
- int err = 0;
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ struct display *disp = get_con_display(info, fbi->currcon);
+ u_int val;
+ int ret = 1;
- DPRINTK("current_par.visual=%d\n", current_par.visual);
- if (!fb_display[con].cmap.len)
- err = fb_alloc_cmap(&fb_display[con].cmap,
- current_par.palette_size, 0);
- if (!err) {
- if (con == current_par.currcon)
- err = fb_set_cmap(cmap, kspc, sa1100fb_setcolreg,
- info);
- fb_copy_cmap(cmap, &fb_display[con].cmap, kspc ? 0 : 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;
}
- return err;
-}
-static void inline
-sa1100fb_get_par(struct sa1100fb_par *par)
-{
- *par = current_par;
-}
+ /*
+ * 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_encode_var():
- * Modify var structure using values in par
+ * sa1100fb_display_dma_period()
+ * Calculate the minimum period (in picoseconds) between two DMA
+ * requests for the LCD controller.
*/
-static int
-sa1100fb_encode_var(struct fb_var_screeninfo *var,
- struct sa1100fb_par *par)
+static unsigned int
+sa1100fb_display_dma_period(struct fb_var_screeninfo *var)
{
- // Don't know if really want to zero var on entry.
- // Look at set_var to see. If so, may need to add extra params to par
-// memset(var, 0, sizeof(struct fb_var_screeninfo));
-
- var->xres = par->xres;
- var->yres = par->yres;
- var->xres_virtual = par->xres_virtual;
- var->yres_virtual = par->yres_virtual;
+ unsigned int mem_bits_per_pixel;
- var->bits_per_pixel = par->bits_per_pixel;
+ mem_bits_per_pixel = var->bits_per_pixel;
+ if (mem_bits_per_pixel == 12)
+ mem_bits_per_pixel = 16;
- DPRINTK("var->bits_per_pixel=%d\n", var->bits_per_pixel);
- switch(var->bits_per_pixel) {
- case 2:
- case 4:
- case 8:
- var->red.length = 4;
- var->green = var->red;
- var->blue = var->red;
- var->transp.length = 0;
- break;
- case 12: // This case should differ for Active/Passive mode
- case 16:
- if (machine_is_bitsy()) {
- var->red.length = 4;
- var->blue.length = 4;
- var->green.length = 4;
- var->transp.length = 0;
- var->red.offset = 12;
- var->green.offset = 7;
- var->blue.offset = 1;
- var->transp.offset = 0;
- } else {
- var->red.length = 5;
- var->blue.length = 5;
- var->green.length = 6;
- var->transp.length = 0;
- var->red.offset = 11;
- var->green.offset = 5;
- var->blue.offset = 0;
- var->transp.offset = 0;
- }
- break;
- }
- return 0;
+ /*
+ * 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,
@@ -416,867 +1064,1236 @@
* bitfields, horizontal timing, vertical timing.
*/
static int
-sa1100fb_decode_var(struct fb_var_screeninfo *var,
- struct sa1100fb_par *par)
+sa1100fb_validate_var(struct fb_var_screeninfo *var,
+ struct sa1100fb_info *fbi)
+{
+ int ret = -EINVAL;
+
+ if (var->xres < MIN_XRES)
+ var->xres = MIN_XRES;
+ if (var->yres < MIN_YRES)
+ var->yres = MIN_YRES;
+ if (var->xres > fbi->max_xres)
+ var->xres = fbi->max_xres;
+ if (var->yres > fbi->max_yres)
+ var->yres = fbi->max_yres;
+ var->xres_virtual =
+ var->xres_virtual < var->xres ? var->xres : var->xres_virtual;
+ var->yres_virtual =
+ var->yres_virtual < var->yres ? var->yres : var->yres_virtual;
+
+ DPRINTK("var->bits_per_pixel=%d\n", var->bits_per_pixel);
+ switch (var->bits_per_pixel) {
+#ifdef FBCON_HAS_CFB4
+ case 4: ret = 0; break;
+#endif
+#ifdef FBCON_HAS_CFB8
+ case 8: ret = 0; break;
+#endif
+#ifdef FBCON_HAS_CFB16
+ case 16: ret = 0; break;
+#endif
+ default:
+ break;
+ }
+
+ printk(KERN_DEBUG "dma period = %d ps, clock = %d kHz",
+ sa1100fb_display_dma_period(var),
+ cpufreq_get(smp_processor_id()));
+
+ return ret;
+}
+
+static inline void sa1100fb_set_truecolor(u_int is_true_color)
+{
+ DPRINTK("true_color = %d\n", is_true_color);
+#ifdef CONFIG_SA1100_ASSABET
+ if (machine_is_assabet()) {
+#if 1
+ // phase 4 or newer Assabet's
+ if (is_true_color)
+ BCR_set(BCR_LCD_12RGB);
+ else
+ BCR_clear(BCR_LCD_12RGB);
+#else
+ // older Assabet's
+ if (is_true_color)
+ BCR_clear(BCR_LCD_12RGB);
+ else
+ BCR_set(BCR_LCD_12RGB);
+#endif
+ }
+#endif
+}
+
+static void
+sa1100fb_hw_set_var(struct fb_var_screeninfo *var, struct sa1100fb_info *fbi)
{
- u_long palette_mem_phys;
u_long palette_mem_size;
- *par = current_par;
+ fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16;
+
+ palette_mem_size = fbi->palette_size * sizeof(u16);
+
+ DPRINTK("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size);
+
+ fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - palette_mem_size);
+ fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size;
+
+ fb_set_cmap(&fbi->fb.cmap, 1, sa1100fb_setcolreg, &fbi->fb);
+
+ /* Set board control register to handle new color depth */
+ sa1100fb_set_truecolor(var->bits_per_pixel >= 16);
+
+#ifdef CONFIG_SA1100_OMNIMETER
+#error Do we have to do this here? We already do it at init time.
+ if (machine_is_omnimeter())
+ SetLCDContrast(DefaultLCDContrast);
+#endif
+
+ sa1100fb_activate_var(var, fbi);
+
+ fbi->palette_cpu[0] = (fbi->palette_cpu[0] &
+ 0xcfff) | palette_pbs(var);
+
+}
+
+/*
+ * sa1100fb_set_var():
+ * Set the user defined part of the display for the specified console
+ */
+static int
+sa1100fb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
+{
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ struct fb_var_screeninfo *dvar = get_con_var(&fbi->fb, con);
+ struct display *display = get_con_display(&fbi->fb, con);
+ int err, chgvar = 0, rgbidx;
+
+ DPRINTK("set_var\n");
- if ((par->xres = var->xres) < MIN_XRES)
- par->xres = MIN_XRES;
- if ((par->yres = var->yres) < MIN_YRES)
- par->yres = MIN_YRES;
- if (par->xres > current_par.max_xres)
- par->xres = current_par.max_xres;
- if (par->yres > current_par.max_yres)
- par->yres = current_par.max_yres;
- par->xres_virtual =
- var->xres_virtual < par->xres ? par->xres : var->xres_virtual;
- par->yres_virtual =
- var->yres_virtual < par->yres ? par->yres : var->yres_virtual;
- par->bits_per_pixel = var->bits_per_pixel;
+ /*
+ * 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;
- DPRINTK("par->bits_per_pixel=%d\n", par->bits_per_pixel);
- switch (par->bits_per_pixel) {
+ switch (var->bits_per_pixel) {
#ifdef FBCON_HAS_CFB4
- case 4:
- par->visual = FB_VISUAL_PSEUDOCOLOR;
- par->palette_size = 16;
- break;
+ 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:
- par->visual = FB_VISUAL_PSEUDOCOLOR;
- par->palette_size = 256;
+ 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: /* RGB 565 */
- par->visual = FB_VISUAL_TRUECOLOR;
- par->palette_size = 0;
+ case 16:
+ display->visual = FB_VISUAL_TRUECOLOR;
+ display->line_length = var->xres * 2;
+ display->dispsw = &fbcon_cfb16;
+ display->dispsw_data = fbi->fb.pseudo_palette;
+ rgbidx = RGB_16;
break;
#endif
default:
+ rgbidx = 0;
+ display->dispsw = &fbcon_dummy;
+ break;
+ }
+
+ display->screen_base = fbi->screen_cpu;
+ display->next_line = display->line_length;
+ display->type = fbi->fb.fix.type;
+ display->type_aux = fbi->fb.fix.type_aux;
+ display->ypanstep = fbi->fb.fix.ypanstep;
+ display->ywrapstep = fbi->fb.fix.ywrapstep;
+ display->can_soft_blank = 1;
+ display->inverse = fbi->cmap_inverse;
+
+ *dvar = *var;
+ dvar->activate &= ~FB_ACTIVATE_ALL;
+
+ /*
+ * Copy the RGB parameters for this display
+ * from the machine specific parameters.
+ */
+ dvar->red = fbi->rgb[rgbidx]->red;
+ dvar->green = fbi->rgb[rgbidx]->green;
+ dvar->blue = fbi->rgb[rgbidx]->blue;
+ dvar->transp = fbi->rgb[rgbidx]->transp;
+
+ DPRINTK("RGBT length = %d:%d:%d:%d\n",
+ dvar->red.length, dvar->green.length, dvar->blue.length,
+ dvar->transp.length);
+
+ DPRINTK("RGBT offset = %d:%d:%d:%d\n",
+ dvar->red.offset, dvar->green.offset, dvar->blue.offset,
+ dvar->transp.offset);
+
+ /*
+ * Update the old var. The fbcon drivers still use this.
+ * Once they are using fbi->fb.var, this can be dropped.
+ */
+ display->var = *dvar;
+
+ /*
+ * If we are setting all the virtual consoles, also set the
+ * defaults used to create new consoles.
+ */
+ if (var->activate & FB_ACTIVATE_ALL)
+ fbi->fb.disp->var = *dvar;
+
+ /*
+ * If the console has changed and the console has defined
+ * a changevar function, call that function.
+ */
+ if (chgvar && info && fbi->fb.changevar)
+ fbi->fb.changevar(con);
+
+ /* If the current console is selected, activate the new var. */
+ if (con != fbi->currcon)
+ return 0;
+
+ sa1100fb_hw_set_var(dvar, fbi);
+
+ return 0;
+}
+
+static int
+__do_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info)
+{
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ struct fb_cmap *dcmap = get_con_cmap(info, con);
+ int err = 0;
+
+ if (con == -1)
+ con = fbi->currcon;
+
+ /* no colormap allocated? (we always have "this" colour map allocated) */
+ if (con >= 0)
+ err = fb_alloc_cmap(&fb_display[con].cmap, fbi->palette_size, 0);
+
+ if (!err && con == fbi->currcon)
+ err = fb_set_cmap(cmap, kspc, sa1100fb_setcolreg, info);
+
+ if (!err)
+ fb_copy_cmap(cmap, dcmap, kspc ? 0 : 1);
+
+ return err;
+}
+
+static int
+sa1100fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+ struct fb_info *info)
+{
+ struct display *disp = get_con_display(info, con);
+
+ if (disp->visual == FB_VISUAL_TRUECOLOR ||
+ disp->visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
return -EINVAL;
+
+ return __do_set_cmap(cmap, kspc, con, info);
+}
+
+static int
+sa1100fb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info)
+{
+ struct display *display = get_con_display(info, con);
+
+ *fix = info->fix;
+
+ fix->line_length = display->line_length;
+ fix->visual = display->visual;
+ return 0;
+}
+
+static int
+sa1100fb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
+{
+ *var = *get_con_var(info, con);
+ return 0;
+}
+
+static int
+sa1100fb_get_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info)
+{
+ struct fb_cmap *dcmap = get_con_cmap(info, con);
+ fb_copy_cmap(dcmap, cmap, kspc ? 0 : 2);
+ return 0;
+}
+
+static struct fb_ops sa1100fb_ops = {
+ owner: THIS_MODULE,
+ fb_get_fix: sa1100fb_get_fix,
+ fb_get_var: sa1100fb_get_var,
+ fb_set_var: sa1100fb_set_var,
+ fb_get_cmap: sa1100fb_get_cmap,
+ fb_set_cmap: sa1100fb_set_cmap,
+};
+
+/*
+ * sa1100fb_switch():
+ * Change to the specified console. Palette and video mode
+ * are changed to the console's stored parameters.
+ *
+ * Uh oh, this can be called from a tasklet (IRQ)
+ */
+static int sa1100fb_switch(int con, struct fb_info *info)
+{
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ struct display *disp;
+ struct fb_cmap *cmap;
+
+ DPRINTK("con=%d info->modename=%s\n", con, fbi->fb.modename);
+
+ if (con == fbi->currcon)
+ return 0;
+
+ if (fbi->currcon >= 0) {
+ disp = fb_display + fbi->currcon;
+
+ /*
+ * Save the old colormap and video mode.
+ */
+ disp->var = fbi->fb.var;
+
+ if (disp->cmap.len)
+ fb_copy_cmap(&fbi->fb.cmap, &disp->cmap, 0);
}
- palette_mem_size = SA1100_PALETTE_MEM_SIZE(par->bits_per_pixel);
- palette_mem_phys = (u_long)VideoMemRegion_phys + PAGE_SIZE - palette_mem_size;
- par->p_palette_base = (u_short *)palette_mem_phys;
- par->v_palette_base = (u_short *)((u_long)VideoMemRegion + PAGE_SIZE - palette_mem_size);
- par->p_screen_base = (u_char *)((u_long)VideoMemRegion_phys + PAGE_SIZE);
- par->v_screen_base = (u_char *)((u_long)VideoMemRegion + PAGE_SIZE);
-
- DPRINTK("p_palette_base = 0x%08lx\n",(u_long)par->p_palette_base);
- DPRINTK("v_palette_base = 0x%08lx\n",(u_long)par->v_palette_base);
- DPRINTK("palette_size = 0x%08lx\n",(u_long)par->palette_size);
- DPRINTK("palette_mem_size = 0x%08lx\n",(u_long)palette_mem_size);
- DPRINTK("p_screen_base = 0x%08lx\n",(u_long)par->p_screen_base);
- DPRINTK("v_screen_base = 0x%08lx\n",(u_long)par->v_screen_base);
- DPRINTK("VideoMemRegion = 0x%08lx\n",(u_long)VideoMemRegion);
- DPRINTK("VideoMemRegion_phys = 0x%08lx\n",(u_long)VideoMemRegion_phys);
+ fbi->currcon = con;
+ disp = fb_display + con;
+
+ /*
+ * Make sure that our colourmap contains 256 entries.
+ */
+ fb_alloc_cmap(&fbi->fb.cmap, 256, 0);
+
+ if (disp->cmap.len)
+ cmap = &disp->cmap;
+ else
+ cmap = fb_default_cmap(1 << disp->var.bits_per_pixel);
+
+ fb_copy_cmap(cmap, &fbi->fb.cmap, 0);
+
+ fbi->fb.var = disp->var;
+ fbi->fb.var.activate = FB_ACTIVATE_NOW;
+
+ sa1100fb_set_var(&fbi->fb.var, con, info);
+ return 0;
+}
+
+/*
+ * Formal definition of the VESA spec:
+ * On
+ * This refers to the state of the display when it is in full operation
+ * Stand-By
+ * This defines an optional operating state of minimal power reduction with
+ * the shortest recovery time
+ * Suspend
+ * This refers to a level of power management in which substantial power
+ * reduction is achieved by the display. The display can have a longer
+ * recovery time from this state than from the Stand-by state
+ * Off
+ * This indicates that the display is consuming the lowest level of power
+ * and is non-operational. Recovery from this state may optionally require
+ * the user to manually power on the monitor
+ *
+ * Now, the fbdev driver adds an additional state, (blank), where they
+ * turn off the video (maybe by colormap tricks), but don't mess with the
+ * video itself: think of it semantically between on and Stand-By.
+ *
+ * So here's what we should do in our fbdev blank routine:
+ *
+ * VESA_NO_BLANKING (mode 0) Video on, front/back light on
+ * VESA_VSYNC_SUSPEND (mode 1) Video on, front/back light off
+ * VESA_HSYNC_SUSPEND (mode 2) Video on, front/back light off
+ * VESA_POWERDOWN (mode 3) Video off, front/back light off
+ *
+ * This will match the matrox implementation.
+ */
+/*
+ * sa1100fb_blank():
+ * Blank the display by setting all palette values to zero. Note, the
+ * 12 and 16 bpp modes don't really use the palette, so this will not
+ * blank the display in all modes.
+ */
+static void sa1100fb_blank(int blank, struct fb_info *info)
+{
+ struct sa1100fb_info *fbi = (struct sa1100fb_info *)info;
+ int i;
+
+ DPRINTK("sa1100fb_blank: blank=%d info->modename=%s\n", blank,
+ fbi->fb.modename);
+
+ switch (blank) {
+ case VESA_POWERDOWN:
+ case VESA_VSYNC_SUSPEND:
+ case VESA_HSYNC_SUSPEND:
+ if (fbi->fb.disp->visual == FB_VISUAL_PSEUDOCOLOR ||
+ fbi->fb.disp->visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
+ for (i = 0; i < fbi->palette_size; i++)
+ sa1100fb_setpalettereg(i, 0, 0, 0, 0, info);
+ sa1100fb_schedule_task(fbi, C_DISABLE);
+ if (sa1100fb_blank_helper)
+ sa1100fb_blank_helper(blank);
+ break;
+
+ case VESA_NO_BLANKING:
+ if (sa1100fb_blank_helper)
+ sa1100fb_blank_helper(blank);
+ if (fbi->fb.disp->visual == FB_VISUAL_PSEUDOCOLOR ||
+ fbi->fb.disp->visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
+ fb_set_cmap(&fbi->fb.cmap, 1, sa1100fb_setcolreg, info);
+ sa1100fb_schedule_task(fbi, C_ENABLE);
+ }
+}
+
+static int sa1100fb_updatevar(int con, struct fb_info *info)
+{
+ DPRINTK("entered\n");
+ return 0;
+}
+
+/*
+ * Calculate the PCD value from the clock rate (in picoseconds).
+ * We take account of the PPCR clock setting.
+ */
+static inline int get_pcd(unsigned int pixclock)
+{
+ unsigned int pcd;
- return 0;
+ if (pixclock) {
+ pcd = get_cclk_frequency() * pixclock;
+ pcd /= 10000000;
+ pcd += 1; /* make up for integer math truncations */
+ } else {
+ /*
+ * People seem to be missing this message. Make it big.
+ * Make it stand out. Make sure people see it.
+ */
+ printk(KERN_WARNING "******************************************************\n");
+ printk(KERN_WARNING "** ZERO PIXEL CLOCK DETECTED **\n");
+ printk(KERN_WARNING "** You are using a zero pixclock. This means that **\n");
+ printk(KERN_WARNING "** clock scaling will not be able to adjust your **\n");
+ printk(KERN_WARNING "** your timing parameters appropriately, and the **\n");
+ printk(KERN_WARNING "** bandwidth calculations will fail to work. This **\n");
+ printk(KERN_WARNING "** will shortly become an error condition, which **\n");
+ printk(KERN_WARNING "** will prevent your LCD display working. Please **\n");
+ printk(KERN_WARNING "** send your patches in as soon as possible to shut **\n");
+ printk(KERN_WARNING "** this message up. **\n");
+ printk(KERN_WARNING "******************************************************\n");
+ pcd = 0;
+ }
+ return pcd;
}
-static int
-sa1100fb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
+/*
+ * 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_par par;
+ struct sa1100fb_lcd_reg new_regs;
+ u_int half_screen_size, yres, pcd = get_pcd(var->pixclock);
+ u_long flags;
+
+ DPRINTK("Configuring SA1100 LCD\n");
+
+ DPRINTK("var: xres=%d hslen=%d lm=%d rm=%d\n",
+ var->xres, var->hsync_len,
+ var->left_margin, var->right_margin);
+ DPRINTK("var: yres=%d vslen=%d um=%d bm=%d\n",
+ var->yres, var->vsync_len,
+ var->upper_margin, var->lower_margin);
+
+#if DEBUG_VAR
+ if (var->xres < 16 || var->xres > 1024)
+ printk(KERN_ERR "%s: invalid xres %d\n",
+ fbi->fb.fix.id, var->xres);
+ if (var->hsync_len < 1 || var->hsync_len > 64)
+ printk(KERN_ERR "%s: invalid hsync_len %d\n",
+ fbi->fb.fix.id, var->hsync_len);
+ if (var->left_margin < 1 || var->left_margin > 255)
+ printk(KERN_ERR "%s: invalid left_margin %d\n",
+ fbi->fb.fix.id, var->left_margin);
+ if (var->right_margin < 1 || var->right_margin > 255)
+ printk(KERN_ERR "%s: invalid right_margin %d\n",
+ fbi->fb.fix.id, var->right_margin);
+ if (var->yres < 1 || var->yres > 1024)
+ printk(KERN_ERR "%s: invalid yres %d\n",
+ fbi->fb.fix.id, var->yres);
+ if (var->vsync_len < 1 || var->vsync_len > 64)
+ printk(KERN_ERR "%s: invalid vsync_len %d\n",
+ fbi->fb.fix.id, var->vsync_len);
+ if (var->upper_margin < 0 || var->upper_margin > 255)
+ printk(KERN_ERR "%s: invalid upper_margin %d\n",
+ fbi->fb.fix.id, var->upper_margin);
+ if (var->lower_margin < 0 || var->lower_margin > 255)
+ printk(KERN_ERR "%s: invalid lower_margin %d\n",
+ fbi->fb.fix.id, var->lower_margin);
+#endif
+
+ new_regs.lccr0 = fbi->lccr0 |
+ LCCR0_LEN | LCCR0_LDM | LCCR0_BAM |
+ LCCR0_ERM | LCCR0_LtlEnd | LCCR0_DMADel(0);
+
+ new_regs.lccr1 =
+ LCCR1_DisWdth(var->xres) +
+ LCCR1_HorSnchWdth(var->hsync_len) +
+ LCCR1_BegLnDel(var->left_margin) +
+ LCCR1_EndLnDel(var->right_margin);
+
+ /*
+ * If we have a dual scan LCD, then we need to halve
+ * the YRES parameter.
+ */
+ yres = var->yres;
+ if (fbi->lccr0 & LCCR0_Dual)
+ yres /= 2;
+
+ new_regs.lccr2 =
+ LCCR2_DisHght(yres) +
+ LCCR2_VrtSnchWdth(var->vsync_len) +
+ LCCR2_BegFrmDel(var->upper_margin) +
+ LCCR2_EndFrmDel(var->lower_margin);
+
+ new_regs.lccr3 = fbi->lccr3 |
+ (var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) |
+ (var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL) |
+ LCCR3_ACBsCntOff;
+
+ if (pcd)
+ new_regs.lccr3 |= LCCR3_PixClkDiv(pcd);
+
+ sa1100fb_check_shadow(&new_regs, var, pcd);
+
+ DPRINTK("nlccr0 = 0x%08x\n", new_regs.lccr0);
+ DPRINTK("nlccr1 = 0x%08x\n", new_regs.lccr1);
+ DPRINTK("nlccr2 = 0x%08x\n", new_regs.lccr2);
+ DPRINTK("nlccr3 = 0x%08x\n", new_regs.lccr3);
+
+ half_screen_size = var->bits_per_pixel;
+ half_screen_size = half_screen_size * var->xres * var->yres / 16;
+
+ /* Update shadow copy atomically */
+ local_irq_save(flags);
+ fbi->dbar1 = fbi->palette_dma;
+ fbi->dbar2 = fbi->screen_dma + half_screen_size;
+
+ fbi->reg_lccr0 = new_regs.lccr0;
+ fbi->reg_lccr1 = new_regs.lccr1;
+ fbi->reg_lccr2 = new_regs.lccr2;
+ fbi->reg_lccr3 = new_regs.lccr3;
+ local_irq_restore(flags);
- DPRINTK("con=%d\n", con);
- if (con == -1) {
- sa1100fb_get_par(&par);
- sa1100fb_encode_var(var, &par);
- } else
- *var = fb_display[con].var;
+ /*
+ * 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 != (Address) fbi->dbar1) || (DBAR2 != (Address) fbi->dbar2))
+ sa1100fb_schedule_task(fbi, C_REENABLE);
return 0;
}
/*
- * sa1100fb_set_var():
- * Set the user defined part of the display for the specified console
+ * 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 int
-sa1100fb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
+
+/*
+ * 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)
{
- struct display *display;
- int err, chgvar = 0;
- struct sa1100fb_par par;
+ DPRINTK("backlight on\n");
- if (con >= 0)
- display = &fb_display[con]; /* Display settings for console */
- else
- display = &global_disp; /* Default display settings */
+#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_BITSY
+ /* what rmk said --dneuer */
+#endif
+}
- /* Decode var contents into a par structure, adjusting any */
- /* out of range values. */
- if ((err = sa1100fb_decode_var(var, &par)))
- return err;
- // Store adjusted par values into var structure
- sa1100fb_encode_var(var, &par);
-
- if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST)
- return 0;
- else if (((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW) &&
- ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NXTOPEN))
- return -EINVAL;
+/*
+ * FIXME: move LCD power stuf into sa1100fb_power_down_lcd()
+ * Also, I'm expecting that the backlight stuff should
+ * be handled differently.
+ */
+static void sa1100fb_backlight_off(struct sa1100fb_info *fbi)
+{
+ DPRINTK("backlight off\n");
- if (con >= 0) {
- if ((display->var.xres != var->xres) ||
- (display->var.yres != var->yres) ||
- (display->var.xres_virtual != var->xres_virtual) ||
- (display->var.yres_virtual != var->yres_virtual) ||
- (display->var.sync != var->sync) ||
- (display->var.bits_per_pixel != var->bits_per_pixel) ||
- (memcmp(&display->var.red, &var->red, sizeof(var->red))) ||
- (memcmp(&display->var.green, &var->green, sizeof(var->green))) ||
- (memcmp(&display->var.blue, &var->blue, sizeof(var->blue))))
- chgvar = 1;
- }
-
- display->var = *var;
- display->screen_base = par.v_screen_base;
- display->visual = par.visual;
- display->type = FB_TYPE_PACKED_PIXELS;
- display->type_aux = 0;
- display->ypanstep = 0;
- display->ywrapstep = 0;
- display->line_length =
- display->next_line = (var->xres * var->bits_per_pixel) / 8;
+#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_BITSY
+ /* what rmk said --dneuer */
+#endif
+}
- display->can_soft_blank = 1;
- display->inverse = 0;
+static void sa1100fb_power_up_lcd(struct sa1100fb_info *fbi)
+{
+ DPRINTK("LCD power on\n");
- switch (display->var.bits_per_pixel) {
-#ifdef FBCON_HAS_CFB4
- case 4:
- display->dispsw = &fbcon_cfb4;
- break;
+#if defined(CONFIG_SA1100_ASSABET) && !defined(ASSABET_PAL_VIDEO)
+ if (machine_is_assabet())
+ BCR_set(BCR_LCD_ON);
#endif
-#ifdef FBCON_HAS_CFB8
- case 8:
- display->dispsw = &fbcon_cfb8;
- break;
+#ifdef CONFIG_SA1100_HUW_WEBPANEL
+ if (machine_is_huw_webpanel())
+ BCR_clear(BCR_TFT_NPWR);
#endif
-#ifdef FBCON_HAS_CFB16
- case 16:
- display->dispsw = &fbcon_cfb16;
- break;
+#ifdef CONFIG_SA1100_OMNIMETER
+ if (machine_is_omnimeter())
+ LCDPowerOn();
#endif
- default:
- display->dispsw = &fbcon_dummy;
- break;
+#ifdef CONFIG_SA1100_BITSY
+ if (machine_is_bitsy()) {
+ set_bitsy_egpio(EGPIO_BITSY_LCD_ON |
+ EGPIO_BITSY_LCD_PCI |
+ EGPIO_BITSY_LCD_5V_ON |
+ EGPIO_BITSY_LVDD_ON);
}
+#endif
+}
- /* If the console has changed and the console has defined */
- /* a changevar function, call that function. */
- if (chgvar && info && info->changevar)
- info->changevar(con);
-
- /* If the current console is selected and it's not truecolor,
- * update the palette
- */
- if ((con == current_par.currcon) &&
- (current_par.visual != FB_VISUAL_TRUECOLOR)) {
- struct fb_cmap *cmap;
-
- current_par = par;
- if (display->cmap.len)
- cmap = &display->cmap;
- else
- cmap = fb_default_cmap(current_par.palette_size);
+static void sa1100fb_power_down_lcd(struct sa1100fb_info *fbi)
+{
+ DPRINTK("LCD power off\n");
- fb_set_cmap(cmap, 1, sa1100fb_setcolreg, info);
+#if defined(CONFIG_SA1100_ASSABET) && !defined(ASSABET_PAL_VIDEO)
+ if (machine_is_assabet())
+ BCR_clear(BCR_LCD_ON);
+#endif
+#ifdef CONFIG_SA1100_HUW_WEBPANEL
+ // dont forget to set the control lines to zero (?)
+ if (machine_is_huw_webpanel())
+ BCR_set(BCR_TFT_NPWR);
+#endif
+#ifdef CONFIG_SA1100_BITSY
+ if (machine_is_bitsy()) {
+ clr_bitsy_egpio(EGPIO_BITSY_LCD_ON |
+ EGPIO_BITSY_LCD_PCI |
+ EGPIO_BITSY_LCD_5V_ON |
+ EGPIO_BITSY_LVDD_ON);
}
-
- /* If the current console is selected, activate the new var. */
- if (con == current_par.currcon)
- sa1100fb_activate_var(var);
-
- return 0;
+#endif
}
-static int
-sa1100fb_updatevar(int con, struct fb_info *info)
+static void sa1100fb_setup_gpio(struct sa1100fb_info *fbi)
{
- DPRINTK("entered\n");
- return 0;
-}
+ u_int mask = 0;
-static int
-sa1100fb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info)
-{
- struct display *display;
+ /*
+ * 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;
- memset(fix, 0, sizeof(struct fb_fix_screeninfo));
- strcpy(fix->id, SA1100_NAME);
+ }
- if (con >= 0)
- {
- DPRINTK("Using console specific display for con=%d\n",con);
- display = &fb_display[con]; /* Display settings for console */
+#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;
}
- else
- display = &global_disp; /* Default display settings */
+#endif
+#ifdef CONFIG_SA1100_CERF
+#error Please contact <rmk@arm.linux.org.uk> about this
+ if (machine_is_cerf()) {
+ /* GPIO15 is used as a bypass for 3.8" displays */
+ mask |= GPIO_GPIO15;
+
+ /* 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>
+ */
- fix->smem_start = (unsigned long)current_par.p_screen_base;
- fix->smem_len = current_par.screen_size;
- fix->type = display->type;
- fix->type_aux = display->type_aux;
- fix->xpanstep = 0;
- fix->ypanstep = display->ypanstep;
- fix->ywrapstep = display->ywrapstep;
- fix->visual = display->visual;
- fix->line_length = display->line_length;
- fix->accel = FB_ACCEL_NONE;
+ /* 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
- return 0;
+ if (mask) {
+ GPDR |= mask;
+ GAFR |= mask;
+ }
}
-
-static void
-__init sa1100fb_init_fbinfo(void)
+static void sa1100fb_enable_controller(struct sa1100fb_info *fbi)
{
- strcpy(fb_info.modename, SA1100_NAME);
- strcpy(fb_info.fontname, "Acorn8x8");
-
- fb_info.node = -1;
- fb_info.flags = FBINFO_FLAG_DEFAULT;
- fb_info.fbops = &sa1100fb_ops;
- fb_info.monspecs = monspecs;
- fb_info.disp = &global_disp;
- fb_info.changevar = NULL;
- fb_info.switch_con = sa1100fb_switch;
- fb_info.updatevar = sa1100fb_updatevar;
- fb_info.blank = sa1100fb_blank;
-
- /*
- * setup initial parameters
- */
- memset(&init_var, 0, sizeof(init_var));
-
- init_var.transp.length = 0;
- init_var.nonstd = 0;
- init_var.activate = FB_ACTIVATE_NOW;
- init_var.xoffset = 0;
- init_var.yoffset = 0;
- init_var.height = -1;
- init_var.width = -1;
- init_var.vmode = FB_VMODE_NONINTERLACED;
+ DPRINTK("Enabling LCD controller\n");
- if (machine_is_assabet()) {
- current_par.max_xres = 320;
- current_par.max_yres = 240;
- current_par.max_bpp = 16;
- init_var.red.length = 5;
- init_var.green.length = 6;
- init_var.blue.length = 5;
- init_var.grayscale = 0;
- init_var.sync = 0;
- init_var.pixclock = 171521;
- } else if (machine_is_cerf()) {
- current_par.max_xres = 320;
- current_par.max_yres = 240;
- current_par.max_bpp = 8;
- init_var.red.length = 4;
- init_var.green.length = 4;
- init_var.blue.length = 4;
- init_var.grayscale = 0;
- init_var.sync = 0;
- init_var.pixclock = 171521;
- } else if (machine_is_pangolin()) {
- current_par.max_xres = 1024;
- current_par.max_yres = 768;
- current_par.max_bpp = 16;
- init_var.red.length = 5;
- init_var.green.length = 6;
- init_var.blue.length = 5;
- init_var.grayscale = 0;
- init_var.sync = 0;
- init_var.pixclock = 15400;
- } else if (machine_is_bitsy()) {
- current_par.max_xres = 320;
- current_par.max_yres = 240;
- current_par.max_bpp = 16;
- init_var.red.length = 4;
- init_var.green.length = 4;
- init_var.blue.length = 4;
- init_var.red.offset = 12;
- init_var.green.offset = 7;
- init_var.blue.offset = 1;
- init_var.grayscale = 0;
- } else if (machine_is_brutus()) {
- current_par.max_xres = 320;
- current_par.max_yres = 240;
- current_par.max_bpp = 8;
- init_var.red.length = 4;
- init_var.green = init_var.red;
- init_var.blue = init_var.red;
- init_var.sync = 0;
- } else if (machine_is_lart()) {
- current_par.max_xres = 320;
- current_par.max_yres = 240;
- current_par.max_bpp = 4;
- init_var.red.length = 4;
- init_var.green = init_var.red;
- init_var.blue = init_var.red;
- init_var.grayscale = 1;
- init_var.pixclock = 150000;
- init_var.sync = 0;
- } else if (machine_is_graphicsclient()) {
- current_par.max_xres = 640;
- current_par.max_yres = 480;
- current_par.max_bpp = 8;
- init_var.red.length = 4;
- init_var.green = init_var.red;
- init_var.blue = init_var.red;
- init_var.sync = 0;
- } else if (machine_is_xp860()) {
- current_par.max_xres = 1024;
- current_par.max_yres = 768;
-
- current_par.max_bpp = 8;
- init_var.red.length = 4;
- init_var.green = init_var.red;
- init_var.blue = init_var.red;
-
- init_var.hsync_len = 4;
- init_var.left_margin = 3;
- init_var.right_margin = 2;
-
- init_var.vsync_len = 3;
- init_var.upper_margin = 2;
- init_var.lower_margin = 1;
-
- }
-
- current_par.p_palette_base = NULL;
- current_par.v_palette_base = NULL;
- current_par.p_screen_base = NULL;
- current_par.v_screen_base = NULL;
- current_par.palette_size = MAX_PALETTE_NUM_ENTRIES;
- current_par.screen_size = MAX_PIXEL_MEM_SIZE;
- current_par.montype = -1;
- current_par.currcon = -1;
- current_par.allow_modeset = 1;
- current_par.controller_state = LCD_MODE_DISABLED;
-
- init_var.xres = current_par.max_xres;
- init_var.yres = current_par.max_yres;
- init_var.xres_virtual = init_var.xres;
- init_var.yres_virtual = init_var.yres;
- init_var.bits_per_pixel = current_par.max_bpp;
-
-}
+ /*
+ * 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 = (Address) fbi->dbar1;
+ DBAR2 = (Address) fbi->dbar2;
+ LCCR0 |= LCCR0_LEN;
+
+#ifdef CONFIG_SA1100_GRAPHICSCLIENT
+#error Where is GPIO24 set as an output? Can we fit this in somewhere else?
+ if (machine_is_graphicsclient()) {
+ // From ADS doc again...same as disable
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(20 * HZ / 1000);
+ GPSR |= GPIO_GPIO24;
+ }
+#endif
+ DPRINTK("DBAR1 = %p\n", DBAR1);
+ DPRINTK("DBAR2 = %p\n", DBAR2);
+ DPRINTK("LCCR0 = 0x%08x\n", LCCR0);
+ DPRINTK("LCCR1 = 0x%08x\n", LCCR1);
+ DPRINTK("LCCR2 = 0x%08x\n", LCCR2);
+ DPRINTK("LCCR3 = 0x%08x\n", LCCR3);
+}
-/*
- * 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(void)
+static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
{
- u_int required_pages;
- u_int extra_pages;
- u_int order;
- struct page *page;
- char *allocated_region;
+ DECLARE_WAITQUEUE(wait, current);
- if (VideoMemRegion != NULL)
- return -EINVAL;
+ DPRINTK("Disabling LCD controller\n");
- DPRINTK("-1-");
+#ifdef CONFIG_SA1100_GRAPHICSCLIENT
+#error Where is GPIO24 set as an output? Can we fit this in somewhere else?
+ if (machine_is_graphicsclient()) {
+ /*
+ * From ADS internal document:
+ * GPIO24 should be LOW at least 10msec prior to disabling
+ * the LCD interface.
+ *
+ * We'll wait 20msec.
+ */
+ GPCR |= GPIO_GPIO24;
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(20 * HZ / 1000);
+ }
+#endif
+#ifdef CONFIG_SA1100_HUW_WEBPANEL
+#error Move me into sa1100fb_power_up_lcd and/or sa1100fb_backlight_on
+ if (machine_is_huw_webpanel()) {
+ // dont forget to set the control lines to zero (?)
+ DPRINTK("ShutDown HuW LCD controller\n");
+ BCR_clear(BCR_TFT_ENA + BCR_CCFL_POW + BCR_PWM_BACKLIGHT);
+ }
+#endif
- /* Find order required to allocate enough memory for framebuffer */
- required_pages = ALLOCATED_FB_MEM_SIZE >> PAGE_SHIFT;
- for (order = 0 ; required_pages >> order ; order++) {;}
- extra_pages = (1 << order) - required_pages;
-
- if ((allocated_region =
- (char *)__get_free_pages(GFP_KERNEL | GFP_DMA, order)) == NULL)
- return -ENOMEM;
-
- VideoMemRegion = (u_char *)allocated_region + (extra_pages << PAGE_SHIFT);
- VideoMemRegion_phys = (u_char *)__virt_to_phys((u_long)VideoMemRegion);
-
- /* Free all pages that we don't need but were given to us because */
- /* __get_free_pages() works on powers of 2. */
- for (;extra_pages;extra_pages--)
- free_page((u_int)allocated_region + ((extra_pages-1) << PAGE_SHIFT));
-
- /* Set reserved flag for fb memory to allow it to be remapped into */
- /* user space by the common fbmem driver using remap_page_range(). */
- for(page = virt_to_page(VideoMemRegion);
- page < virt_to_page(VideoMemRegion + ALLOCATED_FB_MEM_SIZE); page++)
- mem_map_reserve(page);
-
- /* Remap the fb memory to a non-buffered, non-cached region */
- VideoMemRegion = (u_char *)__ioremap((u_long)VideoMemRegion_phys,
- ALLOCATED_FB_MEM_SIZE,
- L_PTE_PRESENT |
- L_PTE_YOUNG |
- L_PTE_DIRTY |
- L_PTE_WRITE);
- return (VideoMemRegion == NULL ? -EINVAL : 0);
-}
-
-static const int frequency[16] = {
- 59000000,
- 73700000,
- 88500000,
- 103200000,
- 118000000,
- 132700000,
- 147500000,
- 162200000,
- 176900000,
- 191700000,
- 206400000,
- 230000000,
- 245000000,
- 260000000,
- 275000000,
- 290000000
-};
+ 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);
+}
-static inline int get_pcd(unsigned int pixclock)
+/*
+ * sa1100fb_handle_irq: Handle 'LCD DONE' interrupts.
+ */
+static void sa1100fb_handle_irq(int irq, void *dev_id, struct pt_regs *regs)
{
- unsigned int pcd = 0;
+ struct sa1100fb_info *fbi = dev_id;
+ unsigned int lcsr = LCSR;
- if (machine_is_assabet() | machine_is_pangolin()) {
- pcd = frequency[PPCR & 0xf] / 1000;
- pcd *= pixclock / 1000;
- pcd = pcd / 1000000;
- pcd++; /* make up for integer math truncations */
+ if (lcsr & LCSR_LDD) {
+ LCCR0 |= LCCR0_LDM;
+ wake_up(&fbi->ctrlr_wait);
}
- return pcd;
-}
+ LCSR = lcsr;
+}
/*
- * sa1100fb_activate_var():
- * Configures LCD Controller based on entries in var parameter. Settings are
- * only written to the controller if changes were made.
+ * 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 int
-sa1100fb_activate_var(struct fb_var_screeninfo *var)
-{
- u_long flags;
- int pcd = get_pcd(var->pixclock);
-
- DPRINTK("Configuring SA1100 LCD\n");
+static void set_ctrlr_state(struct sa1100fb_info *fbi, u_int state)
+{
+ u_int old_state;
- if (current_par.p_palette_base == NULL)
- return -EINVAL;
+ down(&fbi->ctrlr_sem);
- DPRINTK("activating\n");
+ old_state = fbi->state;
- /* Disable interrupts and save status */
- local_irq_save(flags); // disable the interrupts and save flags
+ switch (state) {
+ case C_DISABLE_CLKCHANGE:
+ /*
+ * Disable controller for clock change. If the
+ * controller is already disabled, then do nothing.
+ */
+ if (old_state != C_DISABLE) {
+ fbi->state = state;
+ sa1100fb_disable_controller(fbi);
+ }
+ break;
- /* Reset the LCD Controller's DMA address if it has changed */
- lcd_shadow.dbar1 = (Address)current_par.p_palette_base;
- lcd_shadow.dbar2 = (Address)(current_par.p_screen_base + (current_par.xres * current_par.yres * current_par.bits_per_pixel / 8 / 2));
+ case C_DISABLE:
+ /*
+ * Disable controller
+ */
+ if (old_state != C_DISABLE) {
+ fbi->state = state;
- DPRINTK("Configuring xres = %d, yres = %d\n",var->xres, var->yres);
+ sa1100fb_backlight_off(fbi);
+ if (old_state != C_DISABLE_CLKCHANGE)
+ sa1100fb_disable_controller(fbi);
+ sa1100fb_power_down_lcd(fbi);
+ }
+ break;
- if (machine_is_assabet()) {
- DPRINTK("Configuring Assabet LCD\n");
- lcd_shadow.lccr0 =
- LCCR0_LEN + LCCR0_Color + LCCR0_Sngl +
- LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + LCCR0_Act +
- LCCR0_LtlEnd + LCCR0_DMADel(0);
- lcd_shadow.lccr1 =
- LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(6) +
- LCCR1_BegLnDel(61) + LCCR1_EndLnDel(9);
- lcd_shadow.lccr2 =
- LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
- LCCR2_BegFrmDel(3) + LCCR2_EndFrmDel(0);
- lcd_shadow.lccr3 =
- LCCR3_OutEnH + LCCR3_PixFlEdg + LCCR3_VrtSnchH +
- LCCR3_HorSnchH + LCCR3_ACBsCntOff +
- LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(pcd);
-
- /* Set board control register to handle new color depth */
- sa1100fb_assabet_set_truecolor(var->bits_per_pixel >= 16);
- } else if (machine_is_pangolin()) {
- DPRINTK("Configuring Pangolin LCD\n");
- lcd_shadow.lccr0 =
- LCCR0_LEN + LCCR0_Color + LCCR0_LDM +
- LCCR0_BAM + LCCR0_ERM + LCCR0_Act +
- LCCR0_LtlEnd + LCCR0_DMADel(0);
- lcd_shadow.lccr1 =
- LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(63) +
- LCCR1_BegLnDel(127) + LCCR1_EndLnDel(127);
- lcd_shadow.lccr2 =
- LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(2) +
- LCCR2_BegFrmDel(18) + LCCR2_EndFrmDel(18);
- lcd_shadow.lccr3 =
- LCCR3_PixClkDiv(pcd) + LCCR3_HorSnchH +
- LCCR3_VrtSnchH + LCCR3_OutEnH;
- DPRINTK("pcd = %d\n", pcd);
- DPRINTK("LCCR1_DisWdth(var->xres) = 0x%x\n",
- LCCR1_DisWdth(var->xres));
- DPRINTK("LCCR2_DisHght(var->yres) = 0x%x\n",
- LCCR2_DisHght(var->yres));
- } else if (machine_is_bitsy()) {
- DPRINTK("Configuring Bitsy LCD\n");
- lcd_shadow.lccr0 = LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act +
- LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM +
- LCCR0_DMADel(0);
- lcd_shadow.lccr1 = LCCR1_DisWdth( var->xres ) +
- LCCR1_HorSnchWdth( 4 ) +
- LCCR1_BegLnDel( 0xC ) +
- LCCR1_EndLnDel( 0x11 );
- lcd_shadow.lccr2 = LCCR2_DisHght( var->yres + 1 ) +
- LCCR2_VrtSnchWdth( 3 )+
- LCCR2_BegFrmDel( 10 ) +
- LCCR2_EndFrmDel( 1 );
- lcd_shadow.lccr3 = (/* PCD */ 0x10
- | /* ACB */ 0
- | /* API */ 0
- | LCCR3_VrtSnchL
- | LCCR3_HorSnchL);
- } else if (machine_is_brutus()) {
- DPRINTK("Configuring Brutus LCD\n");
- lcd_shadow.lccr0 =
- LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Pas +
- LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM +
- LCCR0_DMADel(0);
- lcd_shadow.lccr1 =
- LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(4) +
- LCCR1_BegLnDel(41) + LCCR1_EndLnDel(101);
- lcd_shadow.lccr2 =
- LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
- LCCR2_BegFrmDel(0) + LCCR2_EndFrmDel(0);
- lcd_shadow.lccr3 =
- LCCR3_OutEnH + LCCR3_PixFlEdg + LCCR3_VrtSnchH +
- LCCR3_HorSnchH + LCCR3_ACBsCntOff +
- LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(44);
- } else if (machine_is_cerf()) {
- DPRINTK("Configuring Cerf LCD\n");
- lcd_shadow.lccr0 =
- LCCR0_LEN + LCCR0_Color + LCCR0_Sngl +
- LCCR0_LDM + LCCR0_BAM + LCCR0_ERM + LCCR0_Pas +
- LCCR0_LtlEnd + LCCR0_DMADel(0);
- lcd_shadow.lccr1 =
- LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(6) +
- LCCR1_BegLnDel(61) + LCCR1_EndLnDel(9);
- lcd_shadow.lccr2 =
- LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
- LCCR2_BegFrmDel(3) + LCCR2_EndFrmDel(0);
- lcd_shadow.lccr3 =
- LCCR3_OutEnH + LCCR3_PixFlEdg + LCCR3_VrtSnchH +
- LCCR3_HorSnchH + LCCR3_ACBsCntOff +
- LCCR3_ACBsDiv(2) + LCCR3_PixClkDiv(38);
- } else if (machine_is_lart()) {
- DPRINTK("Configuring LART LCD\n");
- lcd_shadow.lccr0 =
- LCCR0_LEN + LCCR0_Mono + LCCR0_Sngl + LCCR0_Pas +
- LCCR0_LtlEnd + LCCR0_LDM + LCCR0_BAM + LCCR0_ERM +
- LCCR0_DMADel(0);
- lcd_shadow.lccr1 =
- LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(2) +
- LCCR1_BegLnDel(4) + LCCR1_EndLnDel(2);
- lcd_shadow.lccr2 =
- LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(1) +
- LCCR2_BegFrmDel(0) + LCCR2_EndFrmDel(0);
- lcd_shadow.lccr3 =
- LCCR3_PixClkDiv(34) + LCCR3_ACBsDiv(512) +
- LCCR3_ACBsCntOff + LCCR3_HorSnchH + LCCR3_VrtSnchH;
- } else if (machine_is_graphicsclient()) {
- DPRINTK("Configuring GraphicsClient LCD\n");
- lcd_shadow.lccr0 =
- LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act;
- lcd_shadow.lccr1 =
- LCCR1_DisWdth(var->xres) + LCCR1_HorSnchWdth(10) +
- LCCR1_EndLnDel(81) + LCCR1_BegLnDel(81);
- lcd_shadow.lccr2 =
- LCCR2_DisHght(var->yres) + LCCR2_VrtSnchWdth(9) +
- LCCR2_EndFrmDel (20) + LCCR2_BegFrmDel(20);
- lcd_shadow.lccr3 =
- LCCR3_PixClkDiv(6) + LCCR3_ACBsDiv(2) +
- LCCR3_ACBsCntOff + LCCR3_HorSnchL + LCCR3_VrtSnchL;
- } else if (machine_is_xp860()) {
- DPRINTK("Configuring XP860 LCD\n");
- lcd_shadow.lccr0 =
- LCCR0_LEN + LCCR0_Color + LCCR0_Sngl + LCCR0_Act +
- LCCR0_LtlEnd + LCCR0_LDM + LCCR0_ERM +
- LCCR0_DMADel(0);
- lcd_shadow.lccr1 =
- LCCR1_DisWdth(var->xres) +
- LCCR1_HorSnchWdth(var->hsync_len) +
- LCCR1_BegLnDel(var->left_margin) +
- LCCR1_EndLnDel(var->right_margin);
- lcd_shadow.lccr2 =
- LCCR2_DisHght(var->yres) +
- LCCR2_VrtSnchWdth(var->vsync_len) +
- LCCR2_BegFrmDel(var->upper_margin) +
- LCCR2_EndFrmDel(var->lower_margin);
- lcd_shadow.lccr3 =
- LCCR3_PixClkDiv(6) +
- LCCR3_HorSnchL + LCCR3_VrtSnchL;
- }
+ 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;
- /* Restore interrupt status */
- local_irq_restore(flags);
+ 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;
- if (( LCCR0 != lcd_shadow.lccr0 ) ||
- ( LCCR1 != lcd_shadow.lccr1 ) ||
- ( LCCR2 != lcd_shadow.lccr2 ) ||
- ( LCCR3 != lcd_shadow.lccr3 ) ||
- ( DBAR1 != lcd_shadow.dbar1 ) ||
- ( DBAR2 != lcd_shadow.dbar2 ))
- {
- sa1100fb_enable_lcd_controller();
+ 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;
}
-
- return 0;
+ up(&fbi->ctrlr_sem);
}
-
/*
- * sa1100fb_inter_handler():
- * Interrupt handler for LCD controller. Processes disable done interrupt (LDD)
- * to reenable controller if controller was disabled to change register values.
+ * Our LCD controller task (which is called when we blank or unblank)
+ * via keventd.
*/
-static void sa1100fb_inter_handler(int irq, void *dev_id, struct pt_regs *regs)
+static void sa1100fb_task(void *dummy)
{
- if (LCSR & LCSR_LDD) {
- int controller_state = current_par.controller_state;
- /* Disable Done Flag is set */
- LCCR0 |= LCCR0_LDM; /* Mask LCD Disable Done Interrupt */
- current_par.controller_state = LCD_MODE_DISABLED;
- if (controller_state == LCD_MODE_DISABLE_BEFORE_ENABLE) {
- DPRINTK("sa1100fb_inter_handler: re-enabling LCD controller\n");
- sa1100fb_enable_lcd_controller();
- } else {
- /*
- * Second half of sa1100fb_disable_lcd_controller()
- */
- if (machine_is_assabet()) {
-#ifdef CONFIG_SA1100_ASSABET
- BCR_clear(BCR_LCD_ON);
-#endif
- } else if (machine_is_bitsy()) {
-#ifdef CONFIG_SA1100_BITSY
- if (current_par.controller_state != LCD_MODE_DISABLE_BEFORE_ENABLE)
- clr_bitsy_egpio(EGPIO_BITSY_LCD_ON | EGPIO_BITSY_LCD_PCI | EGPIO_BITSY_LCD_5V_ON | EGPIO_BITSY_LVDD_ON);
-#endif
- }
- }
- }
- LCSR = 0; /* Clear LCD Status Register */
-}
+ struct sa1100fb_info *fbi = dummy;
+ u_int state = xchg(&fbi->task_state, -1);
+ set_ctrlr_state(fbi, state);
+}
+#ifdef CONFIG_CPU_FREQ
/*
- * sa1100fb_disable_lcd_controller():
- * Disables LCD controller by and enables LDD interrupt. The controller_state
- * is not changed until the LDD interrupt is received to indicate the current
- * frame has completed. Platform specific hardware disabling is also included.
+ * 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 void sa1100fb_disable_lcd_controller(void)
+static unsigned int sa1100fb_min_dma_period(struct sa1100fb_info *fbi)
{
- DPRINTK("Disabling LCD controller\n");
+ unsigned int min_period = (unsigned int)-1;
+ int i;
- /* Exit if already LCD disabled, or LDD IRQ unmasked */
- if ((current_par.controller_state == LCD_MODE_DISABLED) ||
- (!(LCCR0 & LCCR0_LDM))) {
- DPRINTK("LCD already disabled\n");
- return;
+ 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, i));
+ if (period < min_period)
+ min_period = period;
}
- LCSR = 0; /* 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 */
+ return min_period;
}
/*
- * sa1100fb_enable_lcd_controller():
- * Enables LCD controller. If the controller is already enabled, it is first disabled.
- * This forces all changes to the LCD controller registers to be done when the
- * controller is disabled. Platform specific hardware enabling is also included.
+ * 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 void sa1100fb_enable_lcd_controller(void)
+static int
+sa1100fb_clkchg_notifier(struct notifier_block *nb, unsigned long val,
+ void *data)
{
- u_long flags;
-
- local_irq_save(flags);
+ struct sa1100fb_info *fbi = TO_INF(nb, clockchg);
+ struct cpufreq_minmax *mm = data;
+ u_int pcd;
+
+ switch (val) {
+ case CPUFREQ_MINMAX:
+ printk(KERN_DEBUG "min dma period: %d ps, old clock %d kHz, "
+ "new clock %d kHz\n", sa1100fb_min_dma_period(fbi),
+ mm->cur_freq, mm->new_freq);
+ /* todo: fill in min/max values */
+ break;
- /* Disable controller before changing parameters */
- if (current_par.controller_state == LCD_MODE_ENABLED) {
- current_par.controller_state = LCD_MODE_DISABLE_BEFORE_ENABLE;
- sa1100fb_disable_lcd_controller();
- } else {
- DPRINTK("Enabling LCD controller\n");
+ case CPUFREQ_PRECHANGE:
+ set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE);
+ break;
- /* Make sure the mode bits are present in the first palette entry */
- current_par.v_palette_base[0] &= 0x0FFF;
- current_par.v_palette_base[0] |= SA1100_PALETTE_MODE_VAL(current_par.bits_per_pixel);
-
- /* Enable GPIO<9:2> for LCD usage if dual-scan */
- if (lcd_shadow.lccr0 & LCCR0_SDS) {
- GPDR |= 0x3fc;
- GAFR |= 0x3fc;
- }
+ 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
- /* Sequence from 11.7.10 */
- LCCR3 = lcd_shadow.lccr3;
- LCCR2 = lcd_shadow.lccr2;
- LCCR1 = lcd_shadow.lccr1;
- LCCR0 = lcd_shadow.lccr0 & ~LCCR0_LEN;
- DBAR1 = lcd_shadow.dbar1;
- DBAR2 = lcd_shadow.dbar2;
- LCCR0 |= LCCR0_LEN;
+#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;
- if (machine_is_assabet()) {
-#ifdef CONFIG_SA1100_ASSABET
- BCR_set(BCR_LCD_ON);
-#endif
- } else if (machine_is_bitsy()) {
-#ifdef CONFIG_SA1100_BITSY
- set_bitsy_egpio(EGPIO_BITSY_LCD_ON | EGPIO_BITSY_LCD_PCI | EGPIO_BITSY_LCD_5V_ON | EGPIO_BITSY_LVDD_ON);
- DPRINTK("DBAR1=%p\n", DBAR1);
- DPRINTK("LCCR0=%x\n", LCCR0);
- DPRINTK("LCCR1=%x\n", LCCR1);
- DPRINTK("LCCR2=%x\n", LCCR2);
- DPRINTK("LCCR3=%x\n", LCCR3);
-#endif
- }
+ DPRINTK("pm_callback: %d\n", req);
- current_par.controller_state = LCD_MODE_ENABLED;
+ if (req == PM_SUSPEND || req == PM_RESUME) {
+ int state = (int)data;
+ if (state == 0) {
+ /* Enter D0. */
+ set_ctrlr_state(fbi, C_ENABLE);
+ } else {
+ /* Enter D1-D3. Disable the LCD controller. */
+ set_ctrlr_state(fbi, C_DISABLE);
+ }
}
- /* Restore interrupt status */
- local_irq_restore(flags);
+ DPRINTK("done\n");
+ return 0;
}
+#endif
/*
- * 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.
+ * 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 void
-sa1100fb_blank(int blank, struct fb_info *info)
+static int __init sa1100fb_map_video_memory(struct sa1100fb_info *fbi)
{
- int i;
+ /*
+ * 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);
- DPRINTK("blank=%d info->modename=%s\n", blank, info->modename);
- if (blank) {
- if (current_par.visual != FB_VISUAL_TRUECOLOR)
- for (i = 0; i < current_par.palette_size; i++)
- sa1100fb_palette_write(i, sa1100fb_palette_encode(i, 0, 0, 0, 0));
- sa1100fb_disable_lcd_controller();
- }
- else {
- if (current_par.visual != FB_VISUAL_TRUECOLOR)
- sa1100fb_set_cmap(&fb_display[current_par.currcon].cmap, 1,
- current_par.currcon, info);
- sa1100fb_enable_lcd_controller();
+ 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;
}
- /* TODO: Bitsy support for blanking display */
+
+ 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 */
+};
-/*
- * sa1100fb_switch():
- * Change to the specified console. Palette and video mode
- * are changed to the console's stored parameters.
- */
-static int
-sa1100fb_switch(int con, struct fb_info *info)
-{
- DPRINTK("con=%d info->modename=%s\n", con, info->modename);
- if (current_par.visual != FB_VISUAL_TRUECOLOR) {
- struct fb_cmap *cmap;
- if (current_par.currcon >= 0) {
- // Get the colormap for the selected console
- cmap = &fb_display[current_par.currcon].cmap;
-
- if (cmap->len)
- fb_get_cmap(cmap, 1, sa1100fb_getcolreg, info);
- }
- }
+static struct sa1100fb_info * __init sa1100fb_init_fbinfo(void)
+{
+ struct sa1100fb_mach_info *inf;
+ struct sa1100fb_info *fbi;
- current_par.currcon = con;
- fb_display[con].var.activate = FB_ACTIVATE_NOW;
- DPRINTK("fb_display[%d].var.activate=%x\n", con, fb_display[con].var.activate);
- sa1100fb_set_var(&fb_display[con].var, con, info);
- current_par.v_palette_base[0] = (current_par.v_palette_base[0] &
- 0xcfff) | SA1100_PALETTE_MODE_VAL(current_par.bits_per_pixel);
+ 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 0;
+ return fbi;
}
-
int __init sa1100fb_init(void)
{
+ struct sa1100fb_info *fbi;
int ret;
- sa1100fb_init_fbinfo();
+ fbi = sa1100fb_init_fbinfo();
+ ret = -ENOMEM;
+ if (!fbi)
+ goto failed;
/* Initialize video memory */
- if ((ret = sa1100fb_map_video_memory()) != 0)
- return ret;
+ ret = sa1100fb_map_video_memory(fbi);
+ if (ret)
+ goto failed;
+
+ ret = request_irq(IRQ_LCD, sa1100fb_handle_irq, SA_INTERRUPT,
+ fbi->fb.fix.id, fbi);
+ if (ret) {
+ printk(KERN_ERR "sa1100fb: failed in request_irq: %d\n", ret);
+ goto failed;
+ }
- if (current_par.montype < 0 || current_par.montype > NR_MONTYPES)
- current_par.montype = 1;
+#if defined(CONFIG_SA1100_ASSABET) && defined(ASSABET_PAL_VIDEO)
+ if (machine_is_assabet())
+ BCR_clear(BCR_LCD_ON);
+#endif
- if (request_irq(IRQ_LCD, sa1100fb_inter_handler, SA_INTERRUPT, "SA1100 LCD", NULL) != 0) {
- printk(KERN_ERR "sa1100fb: failed in request_irq\n");
- return -EBUSY;
+#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);
}
- DPRINTK("sa1100fb: request_irq succeeded\n");
- disable_irq(IRQ_LCD);
+#endif
- if (machine_is_assabet()) {
- GPDR |= 0x3fc;
- GAFR |= 0x3fc;
- sa1100fb_assabet_set_truecolor(current_par.visual ==
- FB_VISUAL_TRUECOLOR);
- } else if (machine_is_pangolin()) {
- GPDR |= 0x3fc;
- GAFR |= 0x3fc;
- } else if (machine_is_bitsy()) {
- GPDR = (GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 | GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8);
- GAFR |= (GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 | GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8);
- } else if (machine_is_cerf()) {
- GPDR |= 0x3fc;
- GAFR |= 0x3fc;
- } else if (machine_is_xp860()) {
- GPDR |= 0x3fc;
- GAFR |= 0x3fc;
- }
-
- if (sa1100fb_set_var(&init_var, -1, &fb_info))
- current_par.allow_modeset = 0;
- sa1100fb_decode_var(&init_var, ¤t_par);
+ 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
- register_framebuffer(&fb_info);
+ /*
+ * 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)
@@ -1285,24 +2302,33 @@
for (this_opt = strtok(options, ","); this_opt;
this_opt = strtok(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);
+ 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;
}
-
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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)