pxafb.c
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- /*
- * linux/drivers/video/pxafb.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.
- *
- * Intel PXA250/210 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.
- *
- *
- * Code Status:
- * 1999/04/01:
- * - Driver appears to be working for Brutus 320x200x8bpp mode. Other
- * resolutions are working, but only the 8bpp mode is supported.
- * Changes need to be made to the palette encode and decode routines
- * to support 4 and 16 bpp modes.
- * Driver is not designed to be a module. The FrameBuffer is statically
- * allocated since dynamic allocation of a 300k buffer cannot be
- * guaranteed.
- *
- * 1999/06/17:
- * - FrameBuffer memory is now allocated at run-time when the
- * driver is initialized.
- *
- * 2000/04/10: Nicolas Pitre <nico@cam.org>
- * - Big cleanup for dynamic selection of machine type at run time.
- *
- * 2000/07/19: Jamey Hicks <jamey@crl.dec.com>
- * - Support for Bitsy aka Compaq iPAQ H3600 added.
- *
- * 2000/08/07: Tak-Shing Chan <tchan.rd@idthk.com>
- * Jeff Sutherland <jsutherland@accelent.com>
- * - Resolved an issue caused by a change made to the Assabet's PLD
- * earlier this year which broke the framebuffer driver for newer
- * Phase 4 Assabets. Some other parameters were changed to optimize
- * for the Sharp display.
- *
- * 2000/08/09: Cliff Brake <cbrake@accelent.com>
- * - modified for Accelent
- *
- * 2000/08/09: Kunihiko IMAI <imai@vasara.co.jp>
- * - XP860 support added
- *
- * 2000/08/19: Mark Huang <mhuang@livetoy.com>
- * - Allows standard options to be passed on the kernel command line
- * for most common passive displays.
- *
- * 2000/08/29:
- * - s/save_flags_cli/local_irq_save/
- * - remove unneeded extra save_flags_cli in sa1100fb_enable_lcd_controller
- *
- * 2000/10/10: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
- * - Updated LART stuff. Fixed some minor bugs.
- *
- * 2000/10/30: Murphy Chen <murphy@mail.dialogue.com.tw>
- * - Pangolin support added
- *
- * 2000/10/31: Roman Jordan <jor@hoeft-wessel.de>
- * - Huw Webpanel support added
- *
- * 2000/11/23: Eric Peng <ericpeng@coventive.com>
- * - Freebird add
- *
- * 2001/02/07: Jamey Hicks <jamey.hicks@compaq.com>
- * Cliff Brake <cbrake@accelent.com>
- * - Added PM callback
- *
- * 2001/05/26: <rmk@arm.linux.org.uk>
- * - Fix 16bpp so that (a) we use the right colours rather than some
- * totally random colour depending on what was in page 0, and (b)
- * we don't de-reference a NULL pointer.
- * - remove duplicated implementation of consistent_alloc()
- * - convert dma address types to dma_addr_t
- * - remove unused 'montype' stuff
- * - remove redundant zero inits of init_var after the initial
- * memzero.
- * - remove allow_modeset (acornfb idea does not belong here)
- *
- * 2001/05/28: <rmk@arm.linux.org.uk>
- * - massive cleanup - move machine dependent data into structures
- * - I've left various #warnings in - if you see one, and know
- * the hardware concerned, please get in contact with me.
- *
- * 2001/05/31: <rmk@arm.linux.org.uk>
- * - Fix LCCR1 HSW value, fix all machine type specifications to
- * keep values in line. (Please check your machine type specs)
- *
- * 2001/06/10: <rmk@arm.linux.org.uk>
- * - Fiddle with the LCD controller from task context only; mainly
- * so that we can run with interrupts on, and sleep.
- * - Convert #warnings into #errors. No pain, no gain. ;)
- *
- * 2001/06/14: <rmk@arm.linux.org.uk>
- * - Make the palette BPS value for 12bpp come out correctly.
- * - Take notice of "greyscale" on any colour depth.
- * - Make truecolor visuals use the RGB channel encoding information.
- *
- * 2001/07/02: <rmk@arm.linux.org.uk>
- * - Fix colourmap problems.
- *
- * 2001/08/03: <cbrake@accelent.com>
- * - Ported from SA1100 to PXA250
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/errno.h>
- #include <linux/string.h>
- #include <linux/interrupt.h>
- #include <linux/slab.h>
- #include <linux/fb.h>
- #include <linux/delay.h>
- #include <linux/pm.h>
- #include <linux/init.h>
- #include <asm/hardware.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <asm/mach-types.h>
- #include <asm/uaccess.h>
- #include <video/fbcon.h>
- #include <video/fbcon-mfb.h>
- #include <video/fbcon-cfb4.h>
- #include <video/fbcon-cfb8.h>
- #include <video/fbcon-cfb16.h>
- /*
- * debugging?
- */
- #define DEBUG 0
- /*
- * Complain if VAR is out of range.
- */
- #define DEBUG_VAR 1
- #undef ASSABET_PAL_VIDEO
- #include "pxafb.h"
- void (*pxafb_blank_helper)(int blank);
- EXPORT_SYMBOL(pxafb_blank_helper);
- /*
- * IMHO this looks wrong. In 8BPP, length should be 8.
- */
- static struct pxafb_rgb rgb_8 = {
- red: { offset: 0, length: 4, },
- green: { offset: 0, length: 4, },
- blue: { offset: 0, length: 4, },
- transp: { offset: 0, length: 0, },
- };
- static struct pxafb_rgb def_rgb_16 = {
- red: { offset: 11, length: 5, },
- green: { offset: 5, length: 6, },
- blue: { offset: 0, length: 5, },
- transp: { offset: 0, length: 0, },
- };
- static struct pxafb_mach_info lubbock_info __initdata = {
- pixclock: 150000, /* clock period in ps */
- bpp: 8,
- xres: 640,
- yres: 480,
- hsync_len: 1, // LCD_HORIZONTAL_SYNC_PULSE_WIDTH,
- vsync_len: 1, // LCD_VERTICAL_SYNC_PULSE_WIDTH,
- left_margin: 3, // LCD_BEGIN_OF_LINE_WAIT_COUNT,
- upper_margin: 0, //LCD_BEGIN_FRAME_WAIT_COUNT,
- right_margin: 3, //LCD_END_OF_LINE_WAIT_COUNT,
- lower_margin: 0, //LCD_END_OF_FRAME_WAIT_COUNT,
- sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- lccr0: 0x0030087C, //LCD_CTL0_VALUE,
- lccr3: 0x0340FF0C //LCD_CTL3_VALUE,
- };
- static struct pxafb_mach_info idp_info __initdata = {
- pixclock: 150000, /* clock period in ps */
- bpp: 8,
- xres: 640,
- yres: 480,
- hsync_len: 1, // LCD_HORIZONTAL_SYNC_PULSE_WIDTH,
- vsync_len: 1, // LCD_VERTICAL_SYNC_PULSE_WIDTH,
- left_margin: 3, // LCD_BEGIN_OF_LINE_WAIT_COUNT,
- upper_margin: 0, //LCD_BEGIN_FRAME_WAIT_COUNT,
- right_margin: 3, //LCD_END_OF_LINE_WAIT_COUNT,
- lower_margin: 0, //LCD_END_OF_FRAME_WAIT_COUNT,
- sync: FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- lccr0: 0x0030087C, //LCD_CTL0_VALUE,
- lccr3: 0x0340FF0C //LCD_CTL3_VALUE,
- };
- static struct pxafb_mach_info * __init
- pxafb_get_machine_info(struct pxafb_info *fbi)
- {
- struct pxafb_mach_info *inf = NULL;
- /*
- * 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}
- */
- if (machine_is_lubbock()) {
- inf = &lubbock_info;
- } else if (machine_is_pxa_idp()) {
- inf = &idp_info;
- }
- return inf;
- }
- static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *);
- static void set_ctrlr_state(struct pxafb_info *fbi, u_int state);
- static inline void pxafb_schedule_task(struct pxafb_info *fbi, u_int state)
- {
- unsigned long flags;
- local_irq_save(flags);
- /*
- * We need to handle two requests being made at the same time.
- * There are two important cases:
- * 1. When we are changing VT (C_REENABLE) while unblanking (C_ENABLE)
- * We must perform the unblanking, which will do our REENABLE for us.
- * 2. When we are blanking, but immediately unblank before we have
- * blanked. We do the "REENABLE" thing here as well, just to be sure.
- */
- if (fbi->task_state == C_ENABLE && state == C_REENABLE)
- state = (u_int) -1;
- if (fbi->task_state == C_DISABLE && state == C_ENABLE)
- state = C_REENABLE;
- if (state != (u_int)-1) {
- fbi->task_state = state;
- schedule_task(&fbi->task);
- }
- local_irq_restore(flags);
- }
- /*
- * Get the VAR structure pointer for the specified console
- */
- static inline struct fb_var_screeninfo *get_con_var(struct fb_info *info, int con)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- return (con == fbi->currcon || con == -1) ? &fbi->fb.var : &fb_display[con].var;
- }
- /*
- * Get the DISPLAY structure pointer for the specified console
- */
- static inline struct display *get_con_display(struct fb_info *info, int con)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- return (con < 0) ? fbi->fb.disp : &fb_display[con];
- }
- /*
- * Get the CMAP pointer for the specified console
- */
- static inline struct fb_cmap *get_con_cmap(struct fb_info *info, int con)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- return (con == fbi->currcon || con == -1) ? &fbi->fb.cmap : &fb_display[con].cmap;
- }
- static inline u_int
- chan_to_field(u_int chan, struct fb_bitfield *bf)
- {
- chan &= 0xffff;
- chan >>= 16 - bf->length;
- return chan << bf->offset;
- }
- static int
- pxafb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
- u_int trans, struct fb_info *info)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- u_int val, ret = 1;
- if (regno < fbi->palette_size) {
- val = ((red >> 0) & 0xf800);
- val |= ((green >> 5) & 0x07e0);
- val |= ((blue >> 11) & 0x001f);
- fbi->palette_cpu[regno] = val;
- ret = 0;
- }
- return ret;
- }
- static int
- pxafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int trans, struct fb_info *info)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- u_int val;
- int ret = 1;
- /*
- * 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_PSEUDOCOLOR:
- ret = pxafb_setpalettereg(regno, red, green, blue, trans, info);
- break;
- }
- return ret;
- }
- /*
- * pxafb_decode_var():
- * Get the video params out of 'var'. If a value doesn't fit, round it up,
- * if it's too big, return -EINVAL.
- *
- * Suggestion: Round up in the following order: bits_per_pixel, xres,
- * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale,
- * bitfields, horizontal timing, vertical timing.
- */
- static int pxafb_validate_var(struct fb_var_screeninfo *var,
- struct pxafb_info *fbi)
- {
- int ret = -EINVAL;
- if (var->xres < MIN_XRES)
- var->xres = MIN_XRES;
- if (var->yres < MIN_YRES)
- var->yres = MIN_YRES;
- if (var->xres > fbi->max_xres)
- var->xres = fbi->max_xres;
- if (var->yres > fbi->max_yres)
- var->yres = fbi->max_yres;
- var->xres_virtual =
- var->xres_virtual < var->xres ? var->xres : var->xres_virtual;
- var->yres_virtual =
- var->yres_virtual < var->yres ? var->yres : var->yres_virtual;
- DPRINTK("var->bits_per_pixel=%dn", var->bits_per_pixel);
- switch (var->bits_per_pixel) {
- #ifdef FBCON_HAS_CFB4
- case 4: ret = 0; break;
- #endif
- #ifdef FBCON_HAS_CFB8
- case 8: ret = 0; break;
- #endif
- #ifdef FBCON_HAS_CFB16
- case 12:
- /* make sure we are in passive mode */
- if (!(fbi->lccr0 & LCCR0_PAS))
- ret = 0;
- break;
- case 16:
- /* make sure we are in active mode */
- if ((fbi->lccr0 & LCCR0_PAS))
- ret = 0;
- break;
- #endif
- default:
- break;
- }
- return ret;
- }
- static inline void pxafb_set_truecolor(u_int is_true_color)
- {
- DPRINTK("true_color = %dn", 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
- pxafb_hw_set_var(struct fb_var_screeninfo *var, struct pxafb_info *fbi)
- {
- fb_set_cmap(&fbi->fb.cmap, 1, pxafb_setcolreg, &fbi->fb);
- /* Set board control register to handle new color depth */
- pxafb_set_truecolor(var->bits_per_pixel >= 16);
- pxafb_activate_var(var, fbi);
- }
- /*
- * pxafb_set_var():
- * Set the user defined part of the display for the specified console
- */
- static int
- pxafb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- struct fb_var_screeninfo *dvar = get_con_var(&fbi->fb, con);
- struct display *display = get_con_display(&fbi->fb, con);
- int err, chgvar = 0, rgbidx;
- DPRINTK("set_varn");
- /*
- * Decode var contents into a par structure, adjusting any
- * out of range values.
- */
- err = pxafb_validate_var(var, fbi);
- if (err)
- return err;
- if (var->activate & FB_ACTIVATE_TEST)
- return 0;
- if ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW)
- return -EINVAL;
- if (dvar->xres != var->xres)
- chgvar = 1;
- if (dvar->yres != var->yres)
- chgvar = 1;
- if (dvar->xres_virtual != var->xres_virtual)
- chgvar = 1;
- if (dvar->yres_virtual != var->yres_virtual)
- chgvar = 1;
- if (dvar->bits_per_pixel != var->bits_per_pixel)
- chgvar = 1;
- if (con < 0)
- chgvar = 0;
- switch (var->bits_per_pixel) {
- #ifdef FBCON_HAS_CFB4
- case 4:
- if (fbi->cmap_static)
- display->visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
- else
- display->visual = FB_VISUAL_PSEUDOCOLOR;
- display->line_length = var->xres / 2;
- display->dispsw = &fbcon_cfb4;
- rgbidx = RGB_8;
- break;
- #endif
- #ifdef FBCON_HAS_CFB8
- case 8:
- if (fbi->cmap_static)
- display->visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
- else
- display->visual = FB_VISUAL_PSEUDOCOLOR;
- display->line_length = var->xres;
- display->dispsw = &fbcon_cfb8;
- rgbidx = RGB_8;
- break;
- #endif
- #ifdef FBCON_HAS_CFB16
- case 12:
- 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 = 0;
- *dvar = *var;
- dvar->activate &= ~FB_ACTIVATE_ALL;
- /*
- * Copy the RGB parameters for this display
- * from the machine specific parameters.
- */
- dvar->red = fbi->rgb[rgbidx]->red;
- dvar->green = fbi->rgb[rgbidx]->green;
- dvar->blue = fbi->rgb[rgbidx]->blue;
- dvar->transp = fbi->rgb[rgbidx]->transp;
- DPRINTK("RGBT length = %d:%d:%d:%dn",
- dvar->red.length, dvar->green.length, dvar->blue.length,
- dvar->transp.length);
- DPRINTK("RGBT offset = %d:%d:%d:%dn",
- dvar->red.offset, dvar->green.offset, dvar->blue.offset,
- dvar->transp.offset);
- /*
- * Update the old var. The fbcon drivers still use this.
- * Once they are using fbi->fb.var, this can be dropped.
- */
- display->var = *dvar;
- /*
- * If we are setting all the virtual consoles, also set the
- * defaults used to create new consoles.
- */
- if (var->activate & FB_ACTIVATE_ALL)
- fbi->fb.disp->var = *dvar;
- /*
- * If the console has changed and the console has defined
- * a changevar function, call that function.
- */
- if (chgvar && info && fbi->fb.changevar)
- fbi->fb.changevar(con);
- /* If the current console is selected, activate the new var. */
- if (con != fbi->currcon)
- return 0;
- pxafb_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 pxafb_info *fbi = (struct pxafb_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, pxafb_setcolreg, info);
- if (!err)
- fb_copy_cmap(cmap, dcmap, kspc ? 0 : 1);
- return err;
- }
- static int
- pxafb_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)
- return -EINVAL;
- return __do_set_cmap(cmap, kspc, con, info);
- }
- static int
- pxafb_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
- pxafb_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
- {
- *var = *get_con_var(info, con);
- return 0;
- }
- static int
- pxafb_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 pxafb_ops = {
- owner: THIS_MODULE,
- fb_get_fix: pxafb_get_fix,
- fb_get_var: pxafb_get_var,
- fb_set_var: pxafb_set_var,
- fb_get_cmap: pxafb_get_cmap,
- fb_set_cmap: pxafb_set_cmap,
- };
- /*
- * pxafb_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 pxafb_switch(int con, struct fb_info *info)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- struct display *disp;
- struct fb_cmap *cmap;
- DPRINTK("con=%d info->modename=%sn", con, fbi->fb.modename);
- if (con == fbi->currcon)
- return 0;
- if (fbi->currcon >= 0) {
- disp = fb_display + fbi->currcon;
- /*
- * Save the old colormap and video mode.
- */
- disp->var = fbi->fb.var;
- if (disp->cmap.len)
- fb_copy_cmap(&fbi->fb.cmap, &disp->cmap, 0);
- }
- fbi->currcon = con;
- disp = fb_display + con;
- /*
- * Make sure that our colourmap contains 256 entries.
- */
- fb_alloc_cmap(&fbi->fb.cmap, 256, 0);
- if (disp->cmap.len)
- cmap = &disp->cmap;
- else
- cmap = fb_default_cmap(1 << disp->var.bits_per_pixel);
- fb_copy_cmap(cmap, &fbi->fb.cmap, 0);
- fbi->fb.var = disp->var;
- fbi->fb.var.activate = FB_ACTIVATE_NOW;
- pxafb_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.
- */
- /*
- * pxafb_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 pxafb_blank(int blank, struct fb_info *info)
- {
- struct pxafb_info *fbi = (struct pxafb_info *)info;
- int i;
- DPRINTK("pxafb_blank: blank=%d info->modename=%sn", blank,
- fbi->fb.modename);
- switch (blank) {
- case VESA_POWERDOWN:
- case VESA_VSYNC_SUSPEND:
- case VESA_HSYNC_SUSPEND:
- if (fbi->fb.disp->visual == FB_VISUAL_PSEUDOCOLOR ||
- fbi->fb.disp->visual == FB_VISUAL_STATIC_PSEUDOCOLOR)
- for (i = 0; i < fbi->palette_size; i++)
- pxafb_setpalettereg(i, 0, 0, 0, 0, info);
- pxafb_schedule_task(fbi, C_DISABLE);
- if (pxafb_blank_helper)
- pxafb_blank_helper(blank);
- break;
- case VESA_NO_BLANKING:
- if (pxafb_blank_helper)
- pxafb_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, pxafb_setcolreg, info);
- pxafb_schedule_task(fbi, C_ENABLE);
- }
- }
- static int pxafb_updatevar(int con, struct fb_info *info)
- {
- DPRINTK("enteredn");
- return 0;
- }
- /*
- * Calculate the PCD value from the clock rate (in picoseconds).
- * We take account of the PPCR clock setting.
- */
- static inline int get_pcd(unsigned int pixclock)
- {
- unsigned int pcd;
- if (pixclock) {
- pcd = get_lclk_frequency_10khz() * pixclock;
- pcd /= 100000000;
- pcd += 1; /* make up for integer math truncations */
- } else {
- printk(KERN_WARNING "Please convert me to use the PCD calculationsn");
- pcd = 0;
- }
- return pcd;
- }
- /*
- * pxafb_activate_var():
- * Configures LCD Controller based on entries in var parameter. Settings are
- * only written to the controller if changes were made.
- */
- static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *fbi)
- {
- struct pxafb_lcd_reg new_regs;
- u_int pcd = get_pcd(var->pixclock);
- u_long flags;
- DPRINTK("Configuring PXA LCDn");
- DPRINTK("var: xres=%d hslen=%d lm=%d rm=%dn",
- var->xres, var->hsync_len,
- var->left_margin, var->right_margin);
- DPRINTK("var: yres=%d vslen=%d um=%d bm=%dn",
- var->yres, var->vsync_len,
- var->upper_margin, var->lower_margin);
- #if DEBUG_VAR
- if (var->xres < 16 || var->xres > 1024)
- printk(KERN_ERR "%s: invalid xres %dn",
- fbi->fb.fix.id, var->xres);
- if (var->hsync_len < 1 || var->hsync_len > 64)
- printk(KERN_ERR "%s: invalid hsync_len %dn",
- fbi->fb.fix.id, var->hsync_len);
- if (var->left_margin < 1 || var->left_margin > 255)
- printk(KERN_ERR "%s: invalid left_margin %dn",
- fbi->fb.fix.id, var->left_margin);
- if (var->right_margin < 1 || var->right_margin > 255)
- printk(KERN_ERR "%s: invalid right_margin %dn",
- fbi->fb.fix.id, var->right_margin);
- if (var->yres < 1 || var->yres > 1024)
- printk(KERN_ERR "%s: invalid yres %dn",
- fbi->fb.fix.id, var->yres);
- if (var->vsync_len < 1 || var->vsync_len > 64)
- printk(KERN_ERR "%s: invalid vsync_len %dn",
- fbi->fb.fix.id, var->vsync_len);
- if (var->upper_margin < 0 || var->upper_margin > 255)
- printk(KERN_ERR "%s: invalid upper_margin %dn",
- fbi->fb.fix.id, var->upper_margin);
- if (var->lower_margin < 0 || var->lower_margin > 255)
- printk(KERN_ERR "%s: invalid lower_margin %dn",
- fbi->fb.fix.id, var->lower_margin);
- #endif
- // FIXME using hardcoded values for now
- new_regs.lccr0 = fbi->lccr0;
- // |
- // LCCR0_LEN | LCCR0_LDM | LCCR0_BAM |
- // LCCR0_ERM | LCCR0_LtlEnd | LCCR0_DMADel(0);
- new_regs.lccr1 = 0x3030A7F;
- // LCCR1_DisWdth(var->xres) +
- // LCCR1_HorSnchWdth(var->hsync_len) +
- // LCCR1_BegLnDel(var->left_margin) +
- // LCCR1_EndLnDel(var->right_margin);
- new_regs.lccr2 = 0x4EF;
- // LCCR2_DisHght(var->yres) +
- // LCCR2_VrtSnchWdth(var->vsync_len) +
- // LCCR2_BegFrmDel(var->upper_margin) +
- // LCCR2_EndFrmDel(var->lower_margin);
- new_regs.lccr3 = fbi->lccr3;
- // |
- // (var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) |
- // (var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL) |
- // LCCR3_ACBsCntOff;
- // if (pcd)
- // new_regs.lccr3 |= LCCR3_PixClkDiv(pcd);
- DPRINTK("nlccr0 = 0x%08xn", new_regs.lccr0);
- DPRINTK("nlccr1 = 0x%08xn", new_regs.lccr1);
- DPRINTK("nlccr2 = 0x%08xn", new_regs.lccr2);
- DPRINTK("nlccr3 = 0x%08xn", new_regs.lccr3);
- /* Update shadow copy atomically */
- local_irq_save(flags);
- /* setup dma descriptors */
- fbi->dmadesc_fblow_cpu = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette_cpu - 3*16);
- fbi->dmadesc_fbhigh_cpu = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette_cpu - 2*16);
- fbi->dmadesc_palette_cpu = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette_cpu - 1*16);
- fbi->dmadesc_fblow_dma = fbi->palette_dma - 3*16;
- fbi->dmadesc_fbhigh_dma = fbi->palette_dma - 2*16;
- fbi->dmadesc_palette_dma = fbi->palette_dma - 1*16;
- DPRINTK("fbi->dmadesc_fblow_cpu = 0x%xn", fbi->dmadesc_fblow_cpu);
- DPRINTK("fbi->dmadesc_fbhigh_cpu = 0x%xn", fbi->dmadesc_fbhigh_cpu);
- DPRINTK("fbi->dmadesc_palette_cpu = 0x%xn", fbi->dmadesc_palette_cpu);
- DPRINTK("fbi->dmadesc_fblow_dma = 0x%xn", fbi->dmadesc_fblow_dma);
- DPRINTK("fbi->dmadesc_fbhigh_dma = 0x%xn", fbi->dmadesc_fbhigh_dma);
- DPRINTK("fbi->dmadesc_palette_dma = 0x%xn", fbi->dmadesc_palette_dma);
- DPRINTK("fbi->dmadesc_fblow_cpu->fdadr = 0x%xn", fbi->dmadesc_fblow_cpu->fdadr);
- DPRINTK("fbi->dmadesc_fbhigh_cpu->fdadr = 0x%xn", fbi->dmadesc_fbhigh_cpu->fdadr);
- DPRINTK("fbi->dmadesc_palette_cpu->fdadr = 0x%xn", fbi->dmadesc_palette_cpu->fdadr);
- DPRINTK("fbi->dmadesc_fblow_cpu->fsadr = 0x%xn", fbi->dmadesc_fblow_cpu->fsadr);
- DPRINTK("fbi->dmadesc_fbhigh_cpu->fsadr = 0x%xn", fbi->dmadesc_fbhigh_cpu->fsadr);
- DPRINTK("fbi->dmadesc_palette_cpu->fsadr = 0x%xn", fbi->dmadesc_palette_cpu->fsadr);
- DPRINTK("fbi->dmadesc_fblow_cpu->ldcmd = 0x%xn", fbi->dmadesc_fblow_cpu->ldcmd);
- DPRINTK("fbi->dmadesc_fbhigh_cpu->ldcmd = 0x%xn", fbi->dmadesc_fbhigh_cpu->ldcmd);
- DPRINTK("fbi->dmadesc_palette_cpu->ldcmd = 0x%xn", fbi->dmadesc_palette_cpu->ldcmd);
-
- #define BYTES_PER_PANEL ((fbi->lccr0 & LCCR0_SDS) ? (var->xres * var->yres * var->bits_per_pixel / 8 / 2) :
- (var->xres * var->yres * var->bits_per_pixel / 8))
-
- /* populate descriptors */
- fbi->dmadesc_fblow_cpu->fdadr = fbi->dmadesc_fblow_dma;
- fbi->dmadesc_fblow_cpu->fsadr = fbi->screen_dma + BYTES_PER_PANEL;
- fbi->dmadesc_fblow_cpu->ldcmd = BYTES_PER_PANEL;
-
- fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_palette_dma;
- fbi->dmadesc_fbhigh_cpu->fsadr = fbi->screen_dma;
- fbi->dmadesc_fbhigh_cpu->ldcmd = BYTES_PER_PANEL;
- fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_fbhigh_dma;
- fbi->dmadesc_palette_cpu->fsadr = fbi->palette_dma;
- fbi->dmadesc_palette_cpu->ldcmd = (fbi->palette_size * 2) | LDCMD_PAL;
-
- fbi->fdadr0 = fbi->dmadesc_palette_dma;
- fbi->fdadr1 = fbi->dmadesc_fblow_dma;
-
- fbi->reg_lccr0 = new_regs.lccr0;
- fbi->reg_lccr1 = new_regs.lccr1;
- fbi->reg_lccr2 = new_regs.lccr2;
- fbi->reg_lccr3 = new_regs.lccr3;
- local_irq_restore(flags);
- /*
- * Only update the registers if the controller is enabled
- * and something has changed.
- */
- if ((LCCR0 != fbi->reg_lccr0) || (LCCR1 != fbi->reg_lccr1) ||
- (LCCR2 != fbi->reg_lccr2) || (LCCR3 != fbi->reg_lccr3) ||
- (FDADR0 != fbi->fdadr0) || (FDADR1 != fbi->fdadr1))
- pxafb_schedule_task(fbi, C_REENABLE);
- return 0;
- }
- /*
- * NOTE! The following functions are purely helpers for set_ctrlr_state.
- * Do not call them directly; set_ctrlr_state does the correct serialisation
- * to ensure that things happen in the right way 100% of time time.
- * -- rmk
- */
- /*
- * FIXME: move LCD power stuff into pxafb_power_up_lcd()
- * Also, I'm expecting that the backlight stuff should
- * be handled differently.
- */
- static void pxafb_backlight_on(struct pxafb_info *fbi)
- {
- DPRINTK("backlight onn");
- #ifdef CONFIG_ARCH_PXA_IDP
- if(machine_is_pxa_idp()) {
- FB_BACKLIGHT_ON();
- }
- #endif
- }
- /*
- * FIXME: move LCD power stuf into pxafb_power_down_lcd()
- * Also, I'm expecting that the backlight stuff should
- * be handled differently.
- */
- static void pxafb_backlight_off(struct pxafb_info *fbi)
- {
- DPRINTK("backlight offn");
- #ifdef CONFIG_ARCH_PXA_IDP
- if(machine_is_pxa_idp()) {
- FB_BACKLIGHT_OFF();
- }
- #endif
-
- }
- static void pxafb_power_up_lcd(struct pxafb_info *fbi)
- {
- DPRINTK("LCD power onn");
- CKEN |= CKEN16_LCD;
- #if CONFIG_ARCH_PXA_IDP
- /* set GPIOs, etc */
- if(machine_is_pxa_idp()) {
- // FIXME need to add proper delays
- FB_PWR_ON();
- FB_VLCD_ON(); // FIXME this should be after scanning starts
- }
- #endif
- }
- static void pxafb_power_down_lcd(struct pxafb_info *fbi)
- {
- DPRINTK("LCD power offn");
- CKEN &= ~CKEN16_LCD;
- /* set GPIOs, etc */
- #if CONFIG_ARCH_PXA_IDP
- if(machine_is_pxa_idp()) {
- // FIXME need to add proper delays
- FB_PWR_OFF();
- FB_VLCD_OFF(); // FIXME this should be before scanning stops
- }
- #endif
- }
- static void pxafb_setup_gpio(struct pxafb_info *fbi)
- {
- unsigned int lccr0;
- /*
- * setup is based on type of panel supported
- */
- lccr0 = fbi->lccr0;
- /* 4 bit interface */
- if ((lccr0 & LCCR0_CMS) && (lccr0 & LCCR0_SDS) && !(lccr0 & LCCR0_DPD))
- {
- // bits 58-61
- GPDR1 |= (0xf << 26);
- GAFR1_U = (GAFR1_U & (0xff << 20)) | (0xaa << 20);
- // bits 74-77
- GPDR2 |= (0xf << 10);
- GAFR2_L = (0xaa << 20);
- }
- /* 8 bit interface */
- else if (((lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_DPD))) ||
- (!(lccr0 & LCCR0_CMS) && !(lccr0 & LCCR0_PAS) && !(lccr0 & LCCR0_SDS)))
- {
- GPDR1 |= (0x3f << 26);
- GPDR2 |= (0x3);
- GAFR1_U = (GAFR1_U & (0xfff << 20)) | (0x2aa << 20);
- GAFR2_L = (GAFR2_L & 0xf) + (0xa);
- // bits 74-77
- GPDR2 |= (0xf << 10);
- GAFR2_L |= (0xaa << 20);
- }
-
- /* 16 bit interface */
- else if (!(lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_PAS)))
- {
- GPDR1 |= 0xFC000000;
- GPDR2 |= 0x00003FFF;
- GAFR1_U = (GAFR1_U & 0x000FFFFF) | 0xAAA00000;
- GAFR2_L = (GAFR2_L & 0xF0000000) | 0x0AAAAAAA;
- }
- }
- static void pxafb_enable_controller(struct pxafb_info *fbi)
- {
- DPRINTK("Enabling LCD controllern");
- /* Sequence from 11.7.10 */
- LCCR3 = fbi->reg_lccr3;
- LCCR2 = fbi->reg_lccr2;
- LCCR1 = fbi->reg_lccr1;
- LCCR0 = fbi->reg_lccr0 & ~LCCR0_ENB;
- /* FIXME we used to have LCD power control here */
- FDADR0 = fbi->fdadr0;
- FDADR1 = fbi->fdadr1;
- LCCR0 |= LCCR0_ENB;
- DPRINTK("FDADR0 = 0x%08xn", (unsigned int)FDADR0);
- DPRINTK("FDADR1 = 0x%08xn", (unsigned int)FDADR1);
- DPRINTK("LCCR0 = 0x%08xn", (unsigned int)LCCR0);
- DPRINTK("LCCR1 = 0x%08xn", (unsigned int)LCCR1);
- DPRINTK("LCCR2 = 0x%08xn", (unsigned int)LCCR2);
- DPRINTK("LCCR3 = 0x%08xn", (unsigned int)LCCR3);
- }
- static void pxafb_disable_controller(struct pxafb_info *fbi)
- {
- DECLARE_WAITQUEUE(wait, current);
- DPRINTK("Disabling LCD controllern");
- /* FIXME add power down GPIO stuff here */
- 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_ENB; /* Disable LCD Controller */
- schedule_timeout(20 * HZ / 1000);
- current->state = TASK_RUNNING;
- remove_wait_queue(&fbi->ctrlr_wait, &wait);
- }
- /*
- * pxafb_handle_irq: Handle 'LCD DONE' interrupts.
- */
- static void pxafb_handle_irq(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct pxafb_info *fbi = dev_id;
- unsigned int lcsr = LCSR;
- if (lcsr & LCSR_LDD) {
- LCCR0 |= LCCR0_LDM;
- wake_up(&fbi->ctrlr_wait);
- }
- LCSR = lcsr;
- }
- /*
- * This function must be called from task context only, since it will
- * sleep when disabling the LCD controller, or if we get two contending
- * processes trying to alter state.
- */
- static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
- {
- u_int old_state;
- down(&fbi->ctrlr_sem);
- old_state = fbi->state;
- switch (state) {
- case C_DISABLE_CLKCHANGE:
- /*
- * Disable controller for clock change. If the
- * controller is already disabled, then do nothing.
- */
- if (old_state != C_DISABLE) {
- fbi->state = state;
- pxafb_disable_controller(fbi);
- }
- break;
- case C_DISABLE:
- /*
- * Disable controller
- */
- if (old_state != C_DISABLE) {
- fbi->state = state;
- pxafb_backlight_off(fbi);
- if (old_state != C_DISABLE_CLKCHANGE)
- pxafb_disable_controller(fbi);
- pxafb_power_down_lcd(fbi);
- }
- break;
- case C_ENABLE_CLKCHANGE:
- /*
- * Enable the controller after clock change. Only
- * do this if we were disabled for the clock change.
- */
- if (old_state == C_DISABLE_CLKCHANGE) {
- fbi->state = C_ENABLE;
- pxafb_enable_controller(fbi);
- }
- break;
- case C_REENABLE:
- /*
- * Re-enable the controller only if it was already
- * enabled. This is so we reprogram the control
- * registers.
- */
- if (old_state == C_ENABLE) {
- pxafb_disable_controller(fbi);
- pxafb_setup_gpio(fbi);
- pxafb_enable_controller(fbi);
- }
- break;
- case C_ENABLE:
- /*
- * Power up the LCD screen, enable controller, and
- * turn on the backlight.
- */
- if (old_state != C_ENABLE) {
- fbi->state = C_ENABLE;
- pxafb_setup_gpio(fbi);
- pxafb_power_up_lcd(fbi);
- pxafb_enable_controller(fbi);
- pxafb_backlight_on(fbi);
- }
- break;
- }
- up(&fbi->ctrlr_sem);
- }
- /*
- * Our LCD controller task (which is called when we blank or unblank)
- * via keventd.
- */
- static void pxafb_task(void *dummy)
- {
- struct pxafb_info *fbi = dummy;
- u_int state = xchg(&fbi->task_state, -1);
- set_ctrlr_state(fbi, state);
- }
- #ifdef CONFIG_CPU_FREQ
- /*
- * CPU clock speed change handler. We need to adjust the LCD timing
- * parameters when the CPU clock is adjusted by the power management
- * subsystem.
- */
- static int
- pxafb_clkchg_notifier(struct notifier_block *nb, unsigned long val,
- void *data)
- {
- struct pxafb_info *fbi = TO_INF(nb, clockchg);
- u_int pcd;
- switch (val) {
- case CPUFREQ_MINMAX:
- /* todo: fill in min/max values */
- break;
- case CPUFREQ_PRECHANGE:
- set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE);
- break;
- case CPUFREQ_POSTCHANGE:
- pcd = get_pcd(fbi->fb.var.pixclock);
- fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | LCCR3_PixClkDiv(pcd);
- set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE);
- break;
- }
- return 0;
- }
- #endif
- #ifdef CONFIG_PM
- /*
- * Power management hook. Note that we won't be called from IRQ context,
- * unlike the blank functions above, so we may sleep.
- */
- static int
- pxafb_pm_callback(struct pm_dev *pm_dev, pm_request_t req, void *data)
- {
- struct pxafb_info *fbi = pm_dev->data;
- DPRINTK("pm_callback: %dn", req);
- if (req == PM_SUSPEND || req == PM_RESUME) {
- int state = (int)data;
- if (state == 0) {
- /* Enter D0. */
- set_ctrlr_state(fbi, C_ENABLE);
- } else {
- /* Enter D1-D3. Disable the LCD controller. */
- set_ctrlr_state(fbi, C_DISABLE);
- }
- }
- DPRINTK("donen");
- return 0;
- }
- #endif
- /*
- * pxafb_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 pxafb_map_video_memory(struct pxafb_info *fbi)
- {
- u_long palette_mem_size;
- /*
- * We reserve one page for the palette, plus the size
- * of the framebuffer.
- *
- * layout of stuff in memory
- *
- * fblow descriptor
- * fbhigh descriptor
- * palette descriptor
- * palette
- * page boundary->
- * frame buffer
- */
- fbi->map_size = PAGE_ALIGN(fbi->fb.fix.smem_len + PAGE_SIZE);
- fbi->map_cpu = consistent_alloc(GFP_KERNEL, fbi->map_size,
- &fbi->map_dma);
- if (fbi->map_cpu) {
- fbi->screen_cpu = fbi->map_cpu + PAGE_SIZE;
- fbi->screen_dma = fbi->map_dma + PAGE_SIZE;
- fbi->fb.fix.smem_start = fbi->screen_dma;
- fbi->palette_size = fbi->fb.var.bits_per_pixel == 8 ? 256 : 16;
- palette_mem_size = fbi->palette_size * sizeof(u16);
- DPRINTK("palette_mem_size = 0x%08lxn", (u_long) palette_mem_size);
- fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - palette_mem_size);
- fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size;
- }
- return fbi->map_cpu ? 0 : -ENOMEM;
- }
- /* Fake monspecs to fill in fbinfo structure */
- static struct fb_monspecs monspecs __initdata = {
- 30000, 70000, 50, 65, 0 /* Generic */
- };
- static struct pxafb_info * __init pxafb_init_fbinfo(void)
- {
- struct pxafb_mach_info *inf;
- struct pxafb_info *fbi;
- fbi = kmalloc(sizeof(struct pxafb_info) + sizeof(struct display) +
- sizeof(u16) * 16, GFP_KERNEL);
- if (!fbi)
- return NULL;
- memset(fbi, 0, sizeof(struct pxafb_info) + sizeof(struct display));
- fbi->currcon = -1;
- strcpy(fbi->fb.fix.id, PXA_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, PXA_NAME);
- strcpy(fbi->fb.fontname, "Acorn8x8");
- fbi->fb.fbops = &pxafb_ops;
- fbi->fb.changevar = NULL;
- fbi->fb.switch_con = pxafb_switch;
- fbi->fb.updatevar = pxafb_updatevar;
- fbi->fb.blank = pxafb_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 = pxafb_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, pxafb_task, fbi);
- init_MUTEX(&fbi->ctrlr_sem);
- return fbi;
- }
- int __init pxafb_init(void)
- {
- struct pxafb_info *fbi;
- int ret;
- fbi = pxafb_init_fbinfo();
- ret = -ENOMEM;
- if (!fbi)
- goto failed;
- /* Initialize video memory */
- ret = pxafb_map_video_memory(fbi);
- if (ret)
- goto failed;
- ret = request_irq(IRQ_LCD, pxafb_handle_irq, SA_INTERRUPT,
- "LCD", fbi);
- if (ret) {
- printk(KERN_ERR "pxafb: failed in request_irq: %dn", ret);
- goto failed;
- }
- pxafb_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, pxafb_pm_callback);
- if (fbi->pm)
- fbi->pm->data = fbi;
- #endif
- #ifdef CONFIG_CPU_FREQ
- fbi->clockchg.notifier_call = pxafb_clkchg_notifier;
- cpufreq_register_notifier(&fbi->clockchg);
- #endif
- /*
- * Ok, now enable the LCD controller
- */
- set_ctrlr_state(fbi, C_ENABLE);
- /* This driver cannot be unloaded at the moment */
- MOD_INC_USE_COUNT;
- return 0;
- failed:
- if (fbi)
- kfree(fbi);
- return ret;
- }
- int __init pxafb_setup(char *options)
- {
- #if 0
- char *this_opt;
- if (!options || !*options)
- return 0;
- 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);
- }
- #endif
- return 0;
- }