1842 lines · c
1/*2 * BRIEF MODULE DESCRIPTION3 * Au1200 LCD Driver.4 *5 * Copyright 2004-2005 AMD6 * Author: AMD7 *8 * Based on:9 * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device10 * Created 28 Dec 1997 by Geert Uytterhoeven11 *12 * This program is free software; you can redistribute it and/or modify it13 * under the terms of the GNU General Public License as published by the14 * Free Software Foundation; either version 2 of the License, or (at your15 * option) any later version.16 *17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN20 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON24 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.27 *28 * You should have received a copy of the GNU General Public License along29 * with this program; if not, write to the Free Software Foundation, Inc.,30 * 675 Mass Ave, Cambridge, MA 02139, USA.31 */32 33#include <linux/clk.h>34#include <linux/module.h>35#include <linux/platform_device.h>36#include <linux/kernel.h>37#include <linux/errno.h>38#include <linux/string.h>39#include <linux/mm.h>40#include <linux/fb.h>41#include <linux/init.h>42#include <linux/interrupt.h>43#include <linux/ctype.h>44#include <linux/dma-mapping.h>45#include <linux/slab.h>46#include <linux/uaccess.h>47 48#include <asm/mach-au1x00/au1000.h>49#include <asm/mach-au1x00/au1200fb.h> /* platform_data */50#include "au1200fb.h"51 52#define DRIVER_NAME "au1200fb"53#define DRIVER_DESC "LCD controller driver for AU1200 processors"54 55#define DEBUG 056 57#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)58#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)59#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)60 61#if DEBUG62#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)63#else64#define print_dbg(f, arg...) do {} while (0)65#endif66 67 68#define AU1200_LCD_FB_IOCTL 0x46FF69 70#define AU1200_LCD_SET_SCREEN 171#define AU1200_LCD_GET_SCREEN 272#define AU1200_LCD_SET_WINDOW 373#define AU1200_LCD_GET_WINDOW 474#define AU1200_LCD_SET_PANEL 575#define AU1200_LCD_GET_PANEL 676 77#define SCREEN_SIZE (1<< 1)78#define SCREEN_BACKCOLOR (1<< 2)79#define SCREEN_BRIGHTNESS (1<< 3)80#define SCREEN_COLORKEY (1<< 4)81#define SCREEN_MASK (1<< 5)82 83struct au1200_lcd_global_regs_t {84 unsigned int flags;85 unsigned int xsize;86 unsigned int ysize;87 unsigned int backcolor;88 unsigned int brightness;89 unsigned int colorkey;90 unsigned int mask;91 unsigned int panel_choice;92 char panel_desc[80];93 94};95 96#define WIN_POSITION (1<< 0)97#define WIN_ALPHA_COLOR (1<< 1)98#define WIN_ALPHA_MODE (1<< 2)99#define WIN_PRIORITY (1<< 3)100#define WIN_CHANNEL (1<< 4)101#define WIN_BUFFER_FORMAT (1<< 5)102#define WIN_COLOR_ORDER (1<< 6)103#define WIN_PIXEL_ORDER (1<< 7)104#define WIN_SIZE (1<< 8)105#define WIN_COLORKEY_MODE (1<< 9)106#define WIN_DOUBLE_BUFFER_MODE (1<< 10)107#define WIN_RAM_ARRAY_MODE (1<< 11)108#define WIN_BUFFER_SCALE (1<< 12)109#define WIN_ENABLE (1<< 13)110 111struct au1200_lcd_window_regs_t {112 unsigned int flags;113 unsigned int xpos;114 unsigned int ypos;115 unsigned int alpha_color;116 unsigned int alpha_mode;117 unsigned int priority;118 unsigned int channel;119 unsigned int buffer_format;120 unsigned int color_order;121 unsigned int pixel_order;122 unsigned int xsize;123 unsigned int ysize;124 unsigned int colorkey_mode;125 unsigned int double_buffer_mode;126 unsigned int ram_array_mode;127 unsigned int xscale;128 unsigned int yscale;129 unsigned int enable;130};131 132 133struct au1200_lcd_iodata_t {134 unsigned int subcmd;135 struct au1200_lcd_global_regs_t global;136 struct au1200_lcd_window_regs_t window;137};138 139#if defined(__BIG_ENDIAN)140#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11141#else142#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00143#endif144#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565145 146/* Private, per-framebuffer management information (independent of the panel itself) */147struct au1200fb_device {148 struct fb_info *fb_info; /* FB driver info record */149 struct au1200fb_platdata *pd;150 struct device *dev;151 152 int plane;153 unsigned char* fb_mem; /* FrameBuffer memory map */154 unsigned int fb_len;155 dma_addr_t fb_phys;156};157 158/********************************************************************/159 160/* LCD controller restrictions */161#define AU1200_LCD_MAX_XRES 1280162#define AU1200_LCD_MAX_YRES 1024163#define AU1200_LCD_MAX_BPP 32164#define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */165#define AU1200_LCD_NBR_PALETTE_ENTRIES 256166 167/* Default number of visible screen buffer to allocate */168#define AU1200FB_NBR_VIDEO_BUFFERS 1169 170/* Default maximum number of fb devices to create */171#define MAX_DEVICE_COUNT 4172 173/* Default window configuration entry to use (see windows[]) */174#define DEFAULT_WINDOW_INDEX 2175 176/********************************************************************/177 178static struct fb_info *_au1200fb_infos[MAX_DEVICE_COUNT];179static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;180static int device_count = MAX_DEVICE_COUNT;181static int window_index = DEFAULT_WINDOW_INDEX; /* default is zero */182static int panel_index = 2; /* default is zero */183static struct window_settings *win;184static struct panel_settings *panel;185static int noblanking = 1;186static int nohwcursor = 0;187 188struct window_settings {189 unsigned char name[64];190 uint32 mode_backcolor;191 uint32 mode_colorkey;192 uint32 mode_colorkeymsk;193 struct {194 int xres;195 int yres;196 int xpos;197 int ypos;198 uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */199 uint32 mode_winenable;200 } w[4];201};202 203#if defined(__BIG_ENDIAN)204#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00205#else206#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01207#endif208 209/*210 * Default window configurations211 */212static struct window_settings windows[] = {213 { /* Index 0 */214 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",215 /* mode_backcolor */ 0x006600ff,216 /* mode_colorkey,msk*/ 0, 0,217 {218 {219 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,220 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |221 LCD_WINCTRL1_PO_16BPP,222 /* mode_winenable*/ LCD_WINENABLE_WEN0,223 },224 {225 /* xres, yres, xpos, ypos */ 100, 100, 100, 100,226 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |227 LCD_WINCTRL1_PO_16BPP |228 LCD_WINCTRL1_PIPE,229 /* mode_winenable*/ LCD_WINENABLE_WEN1,230 },231 {232 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,233 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |234 LCD_WINCTRL1_PO_16BPP,235 /* mode_winenable*/ 0,236 },237 {238 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,239 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |240 LCD_WINCTRL1_PO_16BPP |241 LCD_WINCTRL1_PIPE,242 /* mode_winenable*/ 0,243 },244 },245 },246 247 { /* Index 1 */248 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",249 /* mode_backcolor */ 0x006600ff,250 /* mode_colorkey,msk*/ 0, 0,251 {252 {253 /* xres, yres, xpos, ypos */ 320, 240, 5, 5,254 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |255 LCD_WINCTRL1_PO_00,256 /* mode_winenable*/ LCD_WINENABLE_WEN0,257 },258 {259 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,260 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565261 | LCD_WINCTRL1_PO_16BPP,262 /* mode_winenable*/ 0,263 },264 {265 /* xres, yres, xpos, ypos */ 100, 100, 0, 0,266 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |267 LCD_WINCTRL1_PO_16BPP |268 LCD_WINCTRL1_PIPE,269 /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,270 },271 {272 /* xres, yres, xpos, ypos */ 200, 25, 0, 0,273 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |274 LCD_WINCTRL1_PO_16BPP |275 LCD_WINCTRL1_PIPE,276 /* mode_winenable*/ 0,277 },278 },279 },280 { /* Index 2 */281 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",282 /* mode_backcolor */ 0x006600ff,283 /* mode_colorkey,msk*/ 0, 0,284 {285 {286 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,287 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |288 LCD_WINCTRL1_PO_16BPP,289 /* mode_winenable*/ LCD_WINENABLE_WEN0,290 },291 {292 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,293 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |294 LCD_WINCTRL1_PO_16BPP,295 /* mode_winenable*/ 0,296 },297 {298 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,299 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |300 LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,301 /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,302 },303 {304 /* xres, yres, xpos, ypos */ 0, 0, 0, 0,305 /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |306 LCD_WINCTRL1_PO_16BPP |307 LCD_WINCTRL1_PIPE,308 /* mode_winenable*/ 0,309 },310 },311 },312 /* Need VGA 640 @ 24bpp, @ 32bpp */313 /* Need VGA 800 @ 24bpp, @ 32bpp */314 /* Need VGA 1024 @ 24bpp, @ 32bpp */315};316 317/*318 * Controller configurations for various panels.319 */320 321struct panel_settings322{323 const char name[25]; /* Full name <vendor>_<model> */324 325 struct fb_monspecs monspecs; /* FB monitor specs */326 327 /* panel timings */328 uint32 mode_screen;329 uint32 mode_horztiming;330 uint32 mode_verttiming;331 uint32 mode_clkcontrol;332 uint32 mode_pwmdiv;333 uint32 mode_pwmhi;334 uint32 mode_outmask;335 uint32 mode_fifoctrl;336 uint32 mode_backlight;337 uint32 lcdclk;338#define Xres min_xres339#define Yres min_yres340 u32 min_xres; /* Minimum horizontal resolution */341 u32 max_xres; /* Maximum horizontal resolution */342 u32 min_yres; /* Minimum vertical resolution */343 u32 max_yres; /* Maximum vertical resolution */344};345 346/********************************************************************/347/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */348 349/* List of panels known to work with the AU1200 LCD controller.350 * To add a new panel, enter the same specifications as the351 * Generic_TFT one, and MAKE SURE that it doesn't conflicts352 * with the controller restrictions. Restrictions are:353 *354 * STN color panels: max_bpp <= 12355 * STN mono panels: max_bpp <= 4356 * TFT panels: max_bpp <= 16357 * max_xres <= 800358 * max_yres <= 600359 */360static struct panel_settings known_lcd_panels[] =361{362 [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */363 .name = "QVGA_320x240",364 .monspecs = {365 .modedb = NULL,366 .modedb_len = 0,367 .hfmin = 30000,368 .hfmax = 70000,369 .vfmin = 60,370 .vfmax = 60,371 .dclkmin = 6000000,372 .dclkmax = 28000000,373 .input = FB_DISP_RGB,374 },375 .mode_screen = LCD_SCREEN_SX_N(320) |376 LCD_SCREEN_SY_N(240),377 .mode_horztiming = 0x00c4623b,378 .mode_verttiming = 0x00502814,379 .mode_clkcontrol = 0x00020002, /* /4=24Mhz */380 .mode_pwmdiv = 0x00000000,381 .mode_pwmhi = 0x00000000,382 .mode_outmask = 0x00FFFFFF,383 .mode_fifoctrl = 0x2f2f2f2f,384 .mode_backlight = 0x00000000,385 .lcdclk = 96,386 320, 320,387 240, 240,388 },389 390 [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */391 .name = "VGA_640x480",392 .monspecs = {393 .modedb = NULL,394 .modedb_len = 0,395 .hfmin = 30000,396 .hfmax = 70000,397 .vfmin = 60,398 .vfmax = 60,399 .dclkmin = 6000000,400 .dclkmax = 28000000,401 .input = FB_DISP_RGB,402 },403 .mode_screen = 0x13f9df80,404 .mode_horztiming = 0x003c5859,405 .mode_verttiming = 0x00741201,406 .mode_clkcontrol = 0x00020001, /* /4=24Mhz */407 .mode_pwmdiv = 0x00000000,408 .mode_pwmhi = 0x00000000,409 .mode_outmask = 0x00FFFFFF,410 .mode_fifoctrl = 0x2f2f2f2f,411 .mode_backlight = 0x00000000,412 .lcdclk = 96,413 640, 480,414 640, 480,415 },416 417 [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */418 .name = "SVGA_800x600",419 .monspecs = {420 .modedb = NULL,421 .modedb_len = 0,422 .hfmin = 30000,423 .hfmax = 70000,424 .vfmin = 60,425 .vfmax = 60,426 .dclkmin = 6000000,427 .dclkmax = 28000000,428 .input = FB_DISP_RGB,429 },430 .mode_screen = 0x18fa5780,431 .mode_horztiming = 0x00dc7e77,432 .mode_verttiming = 0x00584805,433 .mode_clkcontrol = 0x00020000, /* /2=48Mhz */434 .mode_pwmdiv = 0x00000000,435 .mode_pwmhi = 0x00000000,436 .mode_outmask = 0x00FFFFFF,437 .mode_fifoctrl = 0x2f2f2f2f,438 .mode_backlight = 0x00000000,439 .lcdclk = 96,440 800, 800,441 600, 600,442 },443 444 [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */445 .name = "XVGA_1024x768",446 .monspecs = {447 .modedb = NULL,448 .modedb_len = 0,449 .hfmin = 30000,450 .hfmax = 70000,451 .vfmin = 60,452 .vfmax = 60,453 .dclkmin = 6000000,454 .dclkmax = 28000000,455 .input = FB_DISP_RGB,456 },457 .mode_screen = 0x1ffaff80,458 .mode_horztiming = 0x007d0e57,459 .mode_verttiming = 0x00740a01,460 .mode_clkcontrol = 0x000A0000, /* /1 */461 .mode_pwmdiv = 0x00000000,462 .mode_pwmhi = 0x00000000,463 .mode_outmask = 0x00FFFFFF,464 .mode_fifoctrl = 0x2f2f2f2f,465 .mode_backlight = 0x00000000,466 .lcdclk = 72,467 1024, 1024,468 768, 768,469 },470 471 [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */472 .name = "XVGA_1280x1024",473 .monspecs = {474 .modedb = NULL,475 .modedb_len = 0,476 .hfmin = 30000,477 .hfmax = 70000,478 .vfmin = 60,479 .vfmax = 60,480 .dclkmin = 6000000,481 .dclkmax = 28000000,482 .input = FB_DISP_RGB,483 },484 .mode_screen = 0x27fbff80,485 .mode_horztiming = 0x00cdb2c7,486 .mode_verttiming = 0x00600002,487 .mode_clkcontrol = 0x000A0000, /* /1 */488 .mode_pwmdiv = 0x00000000,489 .mode_pwmhi = 0x00000000,490 .mode_outmask = 0x00FFFFFF,491 .mode_fifoctrl = 0x2f2f2f2f,492 .mode_backlight = 0x00000000,493 .lcdclk = 120,494 1280, 1280,495 1024, 1024,496 },497 498 [5] = { /* Samsung 1024x768 TFT */499 .name = "Samsung_1024x768_TFT",500 .monspecs = {501 .modedb = NULL,502 .modedb_len = 0,503 .hfmin = 30000,504 .hfmax = 70000,505 .vfmin = 60,506 .vfmax = 60,507 .dclkmin = 6000000,508 .dclkmax = 28000000,509 .input = FB_DISP_RGB,510 },511 .mode_screen = 0x1ffaff80,512 .mode_horztiming = 0x018cc677,513 .mode_verttiming = 0x00241217,514 .mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */515 .mode_pwmdiv = 0x8000063f, /* SCB 0x0 */516 .mode_pwmhi = 0x03400000, /* SCB 0x0 */517 .mode_outmask = 0x00FFFFFF,518 .mode_fifoctrl = 0x2f2f2f2f,519 .mode_backlight = 0x00000000,520 .lcdclk = 96,521 1024, 1024,522 768, 768,523 },524 525 [6] = { /* Toshiba 640x480 TFT */526 .name = "Toshiba_640x480_TFT",527 .monspecs = {528 .modedb = NULL,529 .modedb_len = 0,530 .hfmin = 30000,531 .hfmax = 70000,532 .vfmin = 60,533 .vfmax = 60,534 .dclkmin = 6000000,535 .dclkmax = 28000000,536 .input = FB_DISP_RGB,537 },538 .mode_screen = LCD_SCREEN_SX_N(640) |539 LCD_SCREEN_SY_N(480),540 .mode_horztiming = LCD_HORZTIMING_HPW_N(96) |541 LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),542 .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |543 LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),544 .mode_clkcontrol = 0x00000000, /* /4=24Mhz */545 .mode_pwmdiv = 0x8000063f,546 .mode_pwmhi = 0x03400000,547 .mode_outmask = 0x00fcfcfc,548 .mode_fifoctrl = 0x2f2f2f2f,549 .mode_backlight = 0x00000000,550 .lcdclk = 96,551 640, 480,552 640, 480,553 },554 555 [7] = { /* Sharp 320x240 TFT */556 .name = "Sharp_320x240_TFT",557 .monspecs = {558 .modedb = NULL,559 .modedb_len = 0,560 .hfmin = 12500,561 .hfmax = 20000,562 .vfmin = 38,563 .vfmax = 81,564 .dclkmin = 4500000,565 .dclkmax = 6800000,566 .input = FB_DISP_RGB,567 },568 .mode_screen = LCD_SCREEN_SX_N(320) |569 LCD_SCREEN_SY_N(240),570 .mode_horztiming = LCD_HORZTIMING_HPW_N(60) |571 LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),572 .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |573 LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),574 .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/575 .mode_pwmdiv = 0x8000063f,576 .mode_pwmhi = 0x03400000,577 .mode_outmask = 0x00fcfcfc,578 .mode_fifoctrl = 0x2f2f2f2f,579 .mode_backlight = 0x00000000,580 .lcdclk = 96, /* 96MHz AUXPLL */581 320, 320,582 240, 240,583 },584 585 [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */586 .name = "Toppoly_TD070WGCB2",587 .monspecs = {588 .modedb = NULL,589 .modedb_len = 0,590 .hfmin = 30000,591 .hfmax = 70000,592 .vfmin = 60,593 .vfmax = 60,594 .dclkmin = 6000000,595 .dclkmax = 28000000,596 .input = FB_DISP_RGB,597 },598 .mode_screen = LCD_SCREEN_SX_N(856) |599 LCD_SCREEN_SY_N(480),600 .mode_horztiming = LCD_HORZTIMING_HND2_N(43) |601 LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),602 .mode_verttiming = LCD_VERTTIMING_VND2_N(20) |603 LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),604 .mode_clkcontrol = 0x00020001, /* /4=24Mhz */605 .mode_pwmdiv = 0x8000063f,606 .mode_pwmhi = 0x03400000,607 .mode_outmask = 0x00fcfcfc,608 .mode_fifoctrl = 0x2f2f2f2f,609 .mode_backlight = 0x00000000,610 .lcdclk = 96,611 856, 856,612 480, 480,613 },614 [9] = {615 .name = "DB1300_800x480",616 .monspecs = {617 .modedb = NULL,618 .modedb_len = 0,619 .hfmin = 30000,620 .hfmax = 70000,621 .vfmin = 60,622 .vfmax = 60,623 .dclkmin = 6000000,624 .dclkmax = 28000000,625 .input = FB_DISP_RGB,626 },627 .mode_screen = LCD_SCREEN_SX_N(800) |628 LCD_SCREEN_SY_N(480),629 .mode_horztiming = LCD_HORZTIMING_HPW_N(5) |630 LCD_HORZTIMING_HND1_N(16) |631 LCD_HORZTIMING_HND2_N(8),632 .mode_verttiming = LCD_VERTTIMING_VPW_N(4) |633 LCD_VERTTIMING_VND1_N(8) |634 LCD_VERTTIMING_VND2_N(5),635 .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(1) |636 LCD_CLKCONTROL_IV |637 LCD_CLKCONTROL_IH,638 .mode_pwmdiv = 0x00000000,639 .mode_pwmhi = 0x00000000,640 .mode_outmask = 0x00FFFFFF,641 .mode_fifoctrl = 0x2f2f2f2f,642 .mode_backlight = 0x00000000,643 .lcdclk = 96,644 800, 800,645 480, 480,646 },647};648 649#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))650 651/********************************************************************/652 653static int winbpp (unsigned int winctrl1)654{655 int bits = 0;656 657 /* how many bits are needed for each pixel format */658 switch (winctrl1 & LCD_WINCTRL1_FRM) {659 case LCD_WINCTRL1_FRM_1BPP:660 bits = 1;661 break;662 case LCD_WINCTRL1_FRM_2BPP:663 bits = 2;664 break;665 case LCD_WINCTRL1_FRM_4BPP:666 bits = 4;667 break;668 case LCD_WINCTRL1_FRM_8BPP:669 bits = 8;670 break;671 case LCD_WINCTRL1_FRM_12BPP:672 case LCD_WINCTRL1_FRM_16BPP655:673 case LCD_WINCTRL1_FRM_16BPP565:674 case LCD_WINCTRL1_FRM_16BPP556:675 case LCD_WINCTRL1_FRM_16BPPI1555:676 case LCD_WINCTRL1_FRM_16BPPI5551:677 case LCD_WINCTRL1_FRM_16BPPA1555:678 case LCD_WINCTRL1_FRM_16BPPA5551:679 bits = 16;680 break;681 case LCD_WINCTRL1_FRM_24BPP:682 case LCD_WINCTRL1_FRM_32BPP:683 bits = 32;684 break;685 }686 687 return bits;688}689 690static int fbinfo2index (struct fb_info *fb_info)691{692 int i;693 694 for (i = 0; i < device_count; ++i) {695 if (fb_info == _au1200fb_infos[i])696 return i;697 }698 printk("au1200fb: ERROR: fbinfo2index failed!\n");699 return -1;700}701 702static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,703 int xpos, int ypos)704{705 uint32 winctrl0, winctrl1, winenable, fb_offset = 0;706 int xsz, ysz;707 708 /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */709 710 winctrl0 = lcd->window[plane].winctrl0;711 winctrl1 = lcd->window[plane].winctrl1;712 winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);713 winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);714 715 /* Check for off-screen adjustments */716 xsz = win->w[plane].xres;717 ysz = win->w[plane].yres;718 if ((xpos + win->w[plane].xres) > panel->Xres) {719 /* Off-screen to the right */720 xsz = panel->Xres - xpos; /* off by 1 ??? */721 /*printk("off screen right\n");*/722 }723 724 if ((ypos + win->w[plane].yres) > panel->Yres) {725 /* Off-screen to the bottom */726 ysz = panel->Yres - ypos; /* off by 1 ??? */727 /*printk("off screen bottom\n");*/728 }729 730 if (xpos < 0) {731 /* Off-screen to the left */732 xsz = win->w[plane].xres + xpos;733 fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);734 xpos = 0;735 /*printk("off screen left\n");*/736 }737 738 if (ypos < 0) {739 /* Off-screen to the top */740 ysz = win->w[plane].yres + ypos;741 /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */742 ypos = 0;743 /*printk("off screen top\n");*/744 }745 746 /* record settings */747 win->w[plane].xpos = xpos;748 win->w[plane].ypos = ypos;749 750 xsz -= 1;751 ysz -= 1;752 winctrl0 |= (xpos << 21);753 winctrl0 |= (ypos << 10);754 winctrl1 |= (xsz << 11);755 winctrl1 |= (ysz << 0);756 757 /* Disable the window while making changes, then restore WINEN */758 winenable = lcd->winenable & (1 << plane);759 wmb(); /* drain writebuffer */760 lcd->winenable &= ~(1 << plane);761 lcd->window[plane].winctrl0 = winctrl0;762 lcd->window[plane].winctrl1 = winctrl1;763 lcd->window[plane].winbuf0 =764 lcd->window[plane].winbuf1 = fbdev->fb_phys;765 lcd->window[plane].winbufctrl = 0; /* select winbuf0 */766 lcd->winenable |= winenable;767 wmb(); /* drain writebuffer */768 769 return 0;770}771 772static void au1200_setpanel(struct panel_settings *newpanel,773 struct au1200fb_platdata *pd)774{775 /*776 * Perform global setup/init of LCD controller777 */778 uint32 winenable;779 780 /* Make sure all windows disabled */781 winenable = lcd->winenable;782 lcd->winenable = 0;783 wmb(); /* drain writebuffer */784 /*785 * Ensure everything is disabled before reconfiguring786 */787 if (lcd->screen & LCD_SCREEN_SEN) {788 /* Wait for vertical sync period */789 lcd->intstatus = LCD_INT_SS;790 while ((lcd->intstatus & LCD_INT_SS) == 0)791 ;792 793 lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/794 795 do {796 lcd->intstatus = lcd->intstatus; /*clear interrupts*/797 wmb(); /* drain writebuffer */798 /*wait for controller to shut down*/799 } while ((lcd->intstatus & LCD_INT_SD) == 0);800 801 /* Call shutdown of current panel (if up) */802 /* this must occur last, because if an external clock is driving803 the controller, the clock cannot be turned off before first804 shutting down the controller.805 */806 if (pd->panel_shutdown)807 pd->panel_shutdown();808 }809 810 /* Newpanel == NULL indicates a shutdown operation only */811 if (newpanel == NULL)812 return;813 814 panel = newpanel;815 816 printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);817 818 /*819 * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)820 */821 if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))822 {823 struct clk *c = clk_get(NULL, "lcd_intclk");824 long r, pc = panel->lcdclk * 1000000;825 826 if (!IS_ERR(c)) {827 r = clk_round_rate(c, pc);828 if ((pc - r) < (pc / 10)) { /* 10% slack */829 clk_set_rate(c, r);830 clk_prepare_enable(c);831 }832 clk_put(c);833 }834 }835 836 /*837 * Configure panel timings838 */839 lcd->screen = panel->mode_screen;840 lcd->horztiming = panel->mode_horztiming;841 lcd->verttiming = panel->mode_verttiming;842 lcd->clkcontrol = panel->mode_clkcontrol;843 lcd->pwmdiv = panel->mode_pwmdiv;844 lcd->pwmhi = panel->mode_pwmhi;845 lcd->outmask = panel->mode_outmask;846 lcd->fifoctrl = panel->mode_fifoctrl;847 wmb(); /* drain writebuffer */848 849 /* fixme: Check window settings to make sure still valid850 * for new geometry */851#if 0852 au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);853 au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);854 au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);855 au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);856#endif857 lcd->winenable = winenable;858 859 /*860 * Re-enable screen now that it is configured861 */862 lcd->screen |= LCD_SCREEN_SEN;863 wmb(); /* drain writebuffer */864 865 /* Call init of panel */866 if (pd->panel_init)867 pd->panel_init();868 869 /* FIX!!!! not appropriate on panel change!!! Global setup/init */870 lcd->intenable = 0;871 lcd->intstatus = ~0;872 lcd->backcolor = win->mode_backcolor;873 874 /* Setup Color Key - FIX!!! */875 lcd->colorkey = win->mode_colorkey;876 lcd->colorkeymsk = win->mode_colorkeymsk;877 878 /* Setup HWCursor - FIX!!! Need to support this eventually */879 lcd->hwc.cursorctrl = 0;880 lcd->hwc.cursorpos = 0;881 lcd->hwc.cursorcolor0 = 0;882 lcd->hwc.cursorcolor1 = 0;883 lcd->hwc.cursorcolor2 = 0;884 lcd->hwc.cursorcolor3 = 0;885 886 887#if 0888#define D(X) printk("%25s: %08X\n", #X, X)889 D(lcd->screen);890 D(lcd->horztiming);891 D(lcd->verttiming);892 D(lcd->clkcontrol);893 D(lcd->pwmdiv);894 D(lcd->pwmhi);895 D(lcd->outmask);896 D(lcd->fifoctrl);897 D(lcd->window[0].winctrl0);898 D(lcd->window[0].winctrl1);899 D(lcd->window[0].winctrl2);900 D(lcd->window[0].winbuf0);901 D(lcd->window[0].winbuf1);902 D(lcd->window[0].winbufctrl);903 D(lcd->window[1].winctrl0);904 D(lcd->window[1].winctrl1);905 D(lcd->window[1].winctrl2);906 D(lcd->window[1].winbuf0);907 D(lcd->window[1].winbuf1);908 D(lcd->window[1].winbufctrl);909 D(lcd->window[2].winctrl0);910 D(lcd->window[2].winctrl1);911 D(lcd->window[2].winctrl2);912 D(lcd->window[2].winbuf0);913 D(lcd->window[2].winbuf1);914 D(lcd->window[2].winbufctrl);915 D(lcd->window[3].winctrl0);916 D(lcd->window[3].winctrl1);917 D(lcd->window[3].winctrl2);918 D(lcd->window[3].winbuf0);919 D(lcd->window[3].winbuf1);920 D(lcd->window[3].winbufctrl);921 D(lcd->winenable);922 D(lcd->intenable);923 D(lcd->intstatus);924 D(lcd->backcolor);925 D(lcd->winenable);926 D(lcd->colorkey);927 D(lcd->colorkeymsk);928 D(lcd->hwc.cursorctrl);929 D(lcd->hwc.cursorpos);930 D(lcd->hwc.cursorcolor0);931 D(lcd->hwc.cursorcolor1);932 D(lcd->hwc.cursorcolor2);933 D(lcd->hwc.cursorcolor3);934#endif935}936 937static void au1200_setmode(struct au1200fb_device *fbdev)938{939 int plane = fbdev->plane;940 /* Window/plane setup */941 lcd->window[plane].winctrl1 = ( 0942 | LCD_WINCTRL1_PRI_N(plane)943 | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */944 ) ;945 946 au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);947 948 lcd->window[plane].winctrl2 = ( 0949 | LCD_WINCTRL2_CKMODE_00950 | LCD_WINCTRL2_DBM951 | LCD_WINCTRL2_BX_N(fbdev->fb_info->fix.line_length)952 | LCD_WINCTRL2_SCX_1953 | LCD_WINCTRL2_SCY_1954 ) ;955 lcd->winenable |= win->w[plane].mode_winenable;956 wmb(); /* drain writebuffer */957}958 959 960/* Inline helpers */961 962/*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/963/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/964 965#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)966 967/* Bitfields format supported by the controller. */968static struct fb_bitfield rgb_bitfields[][4] = {969 /* Red, Green, Blue, Transp */970 [LCD_WINCTRL1_FRM_16BPP655 >> 25] =971 { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },972 973 [LCD_WINCTRL1_FRM_16BPP565 >> 25] =974 { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },975 976 [LCD_WINCTRL1_FRM_16BPP556 >> 25] =977 { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },978 979 [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =980 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },981 982 [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =983 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },984 985 [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =986 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },987 988 [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =989 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },990 991 [LCD_WINCTRL1_FRM_24BPP >> 25] =992 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },993 994 [LCD_WINCTRL1_FRM_32BPP >> 25] =995 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },996};997 998/*-------------------------------------------------------------------------*/999 1000/* Helpers */1001 1002static void au1200fb_update_fbinfo(struct fb_info *fbi)1003{1004 /* FIX!!!! This also needs to take the window pixel format into account!!! */1005 1006 /* Update var-dependent FB info */1007 if (panel_is_color(panel)) {1008 if (fbi->var.bits_per_pixel <= 8) {1009 /* palettized */1010 fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;1011 fbi->fix.line_length = fbi->var.xres_virtual /1012 (8/fbi->var.bits_per_pixel);1013 } else {1014 /* non-palettized */1015 fbi->fix.visual = FB_VISUAL_TRUECOLOR;1016 fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);1017 }1018 } else {1019 /* mono FIX!!! mono 8 and 4 bits */1020 fbi->fix.visual = FB_VISUAL_MONO10;1021 fbi->fix.line_length = fbi->var.xres_virtual / 8;1022 }1023 1024 fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;1025 print_dbg("line length: %d\n", fbi->fix.line_length);1026 print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);1027}1028 1029/*-------------------------------------------------------------------------*/1030 1031/* AU1200 framebuffer driver */1032 1033/* fb_check_var1034 * Validate var settings with hardware restrictions and modify it if necessary1035 */1036static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,1037 struct fb_info *fbi)1038{1039 struct au1200fb_device *fbdev = fbi->par;1040 u32 pixclock;1041 int screen_size, plane;1042 1043 if (!var->pixclock)1044 return -EINVAL;1045 1046 plane = fbdev->plane;1047 1048 /* Make sure that the mode respect all LCD controller and1049 * panel restrictions. */1050 var->xres = win->w[plane].xres;1051 var->yres = win->w[plane].yres;1052 1053 /* No need for virtual resolution support */1054 var->xres_virtual = var->xres;1055 var->yres_virtual = var->yres;1056 1057 var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);1058 1059 screen_size = var->xres_virtual * var->yres_virtual;1060 if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);1061 else screen_size /= (8/var->bits_per_pixel);1062 1063 if (fbdev->fb_len < screen_size)1064 return -EINVAL; /* Virtual screen is to big, abort */1065 1066 /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */1067 /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel1068 * clock can only be obtain by dividing this value by an even integer.1069 * Fallback to a slower pixel clock if necessary. */1070 pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);1071 pixclock = min3(pixclock, fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2);1072 1073 if (AU1200_LCD_MAX_CLK % pixclock) {1074 int diff = AU1200_LCD_MAX_CLK % pixclock;1075 pixclock -= diff;1076 }1077 1078 var->pixclock = KHZ2PICOS(pixclock/1000);1079#if 01080 if (!panel_is_active(panel)) {1081 int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;1082 1083 if (!panel_is_color(panel)1084 && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {1085 /* STN 8bit mono panel support is up to 6MHz pixclock */1086 var->pixclock = KHZ2PICOS(6000);1087 } else if (!pcd) {1088 /* Other STN panel support is up to 12MHz */1089 var->pixclock = KHZ2PICOS(12000);1090 }1091 }1092#endif1093 /* Set bitfield accordingly */1094 switch (var->bits_per_pixel) {1095 case 16:1096 {1097 /* 16bpp True color.1098 * These must be set to MATCH WINCTRL[FORM] */1099 int idx;1100 idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;1101 var->red = rgb_bitfields[idx][0];1102 var->green = rgb_bitfields[idx][1];1103 var->blue = rgb_bitfields[idx][2];1104 var->transp = rgb_bitfields[idx][3];1105 break;1106 }1107 1108 case 32:1109 {1110 /* 32bpp True color.1111 * These must be set to MATCH WINCTRL[FORM] */1112 int idx;1113 idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;1114 var->red = rgb_bitfields[idx][0];1115 var->green = rgb_bitfields[idx][1];1116 var->blue = rgb_bitfields[idx][2];1117 var->transp = rgb_bitfields[idx][3];1118 break;1119 }1120 default:1121 print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);1122 return -EINVAL;1123 }1124 1125 return 0;1126}1127 1128/* fb_set_par1129 * Set hardware with var settings. This will enable the controller with a1130 * specific mode, normally validated with the fb_check_var method1131 */1132static int au1200fb_fb_set_par(struct fb_info *fbi)1133{1134 struct au1200fb_device *fbdev = fbi->par;1135 1136 au1200fb_update_fbinfo(fbi);1137 au1200_setmode(fbdev);1138 1139 return 0;1140}1141 1142/* fb_setcolreg1143 * Set color in LCD palette.1144 */1145static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,1146 unsigned blue, unsigned transp, struct fb_info *fbi)1147{1148 volatile u32 *palette = lcd->palette;1149 u32 value;1150 1151 if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))1152 return -EINVAL;1153 1154 if (fbi->var.grayscale) {1155 /* Convert color to grayscale */1156 red = green = blue =1157 (19595 * red + 38470 * green + 7471 * blue) >> 16;1158 }1159 1160 if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {1161 /* Place color in the pseudopalette */1162 if (regno > 16)1163 return -EINVAL;1164 1165 palette = (u32*) fbi->pseudo_palette;1166 1167 red >>= (16 - fbi->var.red.length);1168 green >>= (16 - fbi->var.green.length);1169 blue >>= (16 - fbi->var.blue.length);1170 1171 value = (red << fbi->var.red.offset) |1172 (green << fbi->var.green.offset)|1173 (blue << fbi->var.blue.offset);1174 value &= 0xFFFF;1175 1176 } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {1177 /* COLOR TFT PALLETTIZED (use RGB 565) */1178 value = (red & 0xF800)|((green >> 5) &1179 0x07E0)|((blue >> 11) & 0x001F);1180 value &= 0xFFFF;1181 1182 } else if (0 /*panel_is_color(fbdev->panel)*/) {1183 /* COLOR STN MODE */1184 value = 0x1234;1185 value &= 0xFFF;1186 } else {1187 /* MONOCHROME MODE */1188 value = (green >> 12) & 0x000F;1189 value &= 0xF;1190 }1191 1192 palette[regno] = value;1193 1194 return 0;1195}1196 1197/* fb_blank1198 * Blank the screen. Depending on the mode, the screen will be1199 * activated with the backlight color, or desactivated1200 */1201static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)1202{1203 struct au1200fb_device *fbdev = fbi->par;1204 1205 /* Short-circuit screen blanking */1206 if (noblanking)1207 return 0;1208 1209 switch (blank_mode) {1210 1211 case FB_BLANK_UNBLANK:1212 case FB_BLANK_NORMAL:1213 /* printk("turn on panel\n"); */1214 au1200_setpanel(panel, fbdev->pd);1215 break;1216 case FB_BLANK_VSYNC_SUSPEND:1217 case FB_BLANK_HSYNC_SUSPEND:1218 case FB_BLANK_POWERDOWN:1219 /* printk("turn off panel\n"); */1220 au1200_setpanel(NULL, fbdev->pd);1221 break;1222 default:1223 break;1224 1225 }1226 1227 /* FB_BLANK_NORMAL is a soft blank */1228 return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;1229}1230 1231/* fb_mmap1232 * Map video memory in user space. We don't use the generic fb_mmap1233 * method mainly to allow the use of the TLB streaming flag (CCA=6)1234 */1235static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)1236{1237 struct au1200fb_device *fbdev = info->par;1238 1239 vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot);1240 1241 return dma_mmap_coherent(fbdev->dev, vma,1242 fbdev->fb_mem, fbdev->fb_phys, fbdev->fb_len);1243}1244 1245static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)1246{1247 1248 unsigned int hi1, divider;1249 1250 /* SCREEN_SIZE: user cannot reset size, must switch panel choice */1251 1252 if (pdata->flags & SCREEN_BACKCOLOR)1253 lcd->backcolor = pdata->backcolor;1254 1255 if (pdata->flags & SCREEN_BRIGHTNESS) {1256 1257 // limit brightness pwm duty to >= 30/16001258 if (pdata->brightness < 30) {1259 pdata->brightness = 30;1260 }1261 divider = (lcd->pwmdiv & 0x3FFFF) + 1;1262 hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);1263 lcd->pwmhi &= 0xFFFF;1264 lcd->pwmhi |= (hi1 << 16);1265 }1266 1267 if (pdata->flags & SCREEN_COLORKEY)1268 lcd->colorkey = pdata->colorkey;1269 1270 if (pdata->flags & SCREEN_MASK)1271 lcd->colorkeymsk = pdata->mask;1272 wmb(); /* drain writebuffer */1273}1274 1275static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)1276{1277 unsigned int hi1, divider;1278 1279 pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;1280 pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;1281 1282 pdata->backcolor = lcd->backcolor;1283 pdata->colorkey = lcd->colorkey;1284 pdata->mask = lcd->colorkeymsk;1285 1286 // brightness1287 hi1 = (lcd->pwmhi >> 16) + 1;1288 divider = (lcd->pwmdiv & 0x3FFFF) + 1;1289 pdata->brightness = ((hi1 << 8) / divider) - 1;1290 wmb(); /* drain writebuffer */1291}1292 1293static void set_window(unsigned int plane,1294 struct au1200_lcd_window_regs_t *pdata)1295{1296 unsigned int val, bpp;1297 1298 /* Window control register 0 */1299 if (pdata->flags & WIN_POSITION) {1300 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |1301 LCD_WINCTRL0_OY);1302 val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);1303 val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);1304 lcd->window[plane].winctrl0 = val;1305 }1306 if (pdata->flags & WIN_ALPHA_COLOR) {1307 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);1308 val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);1309 lcd->window[plane].winctrl0 = val;1310 }1311 if (pdata->flags & WIN_ALPHA_MODE) {1312 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);1313 val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);1314 lcd->window[plane].winctrl0 = val;1315 }1316 1317 /* Window control register 1 */1318 if (pdata->flags & WIN_PRIORITY) {1319 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);1320 val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);1321 lcd->window[plane].winctrl1 = val;1322 }1323 if (pdata->flags & WIN_CHANNEL) {1324 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);1325 val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);1326 lcd->window[plane].winctrl1 = val;1327 }1328 if (pdata->flags & WIN_BUFFER_FORMAT) {1329 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);1330 val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);1331 lcd->window[plane].winctrl1 = val;1332 }1333 if (pdata->flags & WIN_COLOR_ORDER) {1334 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);1335 val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);1336 lcd->window[plane].winctrl1 = val;1337 }1338 if (pdata->flags & WIN_PIXEL_ORDER) {1339 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);1340 val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);1341 lcd->window[plane].winctrl1 = val;1342 }1343 if (pdata->flags & WIN_SIZE) {1344 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |1345 LCD_WINCTRL1_SZY);1346 val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);1347 val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);1348 lcd->window[plane].winctrl1 = val;1349 /* program buffer line width */1350 bpp = winbpp(val) / 8;1351 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);1352 val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);1353 lcd->window[plane].winctrl2 = val;1354 }1355 1356 /* Window control register 2 */1357 if (pdata->flags & WIN_COLORKEY_MODE) {1358 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);1359 val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);1360 lcd->window[plane].winctrl2 = val;1361 }1362 if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {1363 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);1364 val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);1365 lcd->window[plane].winctrl2 = val;1366 }1367 if (pdata->flags & WIN_RAM_ARRAY_MODE) {1368 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);1369 val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);1370 lcd->window[plane].winctrl2 = val;1371 }1372 1373 /* Buffer line width programmed with WIN_SIZE */1374 1375 if (pdata->flags & WIN_BUFFER_SCALE) {1376 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |1377 LCD_WINCTRL2_SCY);1378 val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);1379 val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);1380 lcd->window[plane].winctrl2 = val;1381 }1382 1383 if (pdata->flags & WIN_ENABLE) {1384 val = lcd->winenable;1385 val &= ~(1<<plane);1386 val |= (pdata->enable & 1) << plane;1387 lcd->winenable = val;1388 }1389 wmb(); /* drain writebuffer */1390}1391 1392static void get_window(unsigned int plane,1393 struct au1200_lcd_window_regs_t *pdata)1394{1395 /* Window control register 0 */1396 pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;1397 pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;1398 pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;1399 pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;1400 1401 /* Window control register 1 */1402 pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;1403 pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;1404 pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;1405 pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;1406 pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;1407 pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;1408 pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;1409 1410 /* Window control register 2 */1411 pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;1412 pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;1413 pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;1414 1415 pdata->enable = (lcd->winenable >> plane) & 1;1416 wmb(); /* drain writebuffer */1417}1418 1419static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,1420 unsigned long arg)1421{1422 struct au1200fb_device *fbdev = info->par;1423 int plane;1424 int val;1425 1426 plane = fbinfo2index(info);1427 print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);1428 1429 if (cmd == AU1200_LCD_FB_IOCTL) {1430 struct au1200_lcd_iodata_t iodata;1431 1432 if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))1433 return -EFAULT;1434 1435 print_dbg("FB IOCTL called\n");1436 1437 switch (iodata.subcmd) {1438 case AU1200_LCD_SET_SCREEN:1439 print_dbg("AU1200_LCD_SET_SCREEN\n");1440 set_global(cmd, &iodata.global);1441 break;1442 1443 case AU1200_LCD_GET_SCREEN:1444 print_dbg("AU1200_LCD_GET_SCREEN\n");1445 get_global(cmd, &iodata.global);1446 break;1447 1448 case AU1200_LCD_SET_WINDOW:1449 print_dbg("AU1200_LCD_SET_WINDOW\n");1450 set_window(plane, &iodata.window);1451 break;1452 1453 case AU1200_LCD_GET_WINDOW:1454 print_dbg("AU1200_LCD_GET_WINDOW\n");1455 get_window(plane, &iodata.window);1456 break;1457 1458 case AU1200_LCD_SET_PANEL:1459 print_dbg("AU1200_LCD_SET_PANEL\n");1460 if ((iodata.global.panel_choice >= 0) &&1461 (iodata.global.panel_choice <1462 NUM_PANELS))1463 {1464 struct panel_settings *newpanel;1465 panel_index = iodata.global.panel_choice;1466 newpanel = &known_lcd_panels[panel_index];1467 au1200_setpanel(newpanel, fbdev->pd);1468 }1469 break;1470 1471 case AU1200_LCD_GET_PANEL:1472 print_dbg("AU1200_LCD_GET_PANEL\n");1473 iodata.global.panel_choice = panel_index;1474 break;1475 1476 default:1477 return -EINVAL;1478 }1479 1480 val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));1481 if (val) {1482 print_dbg("error: could not copy %d bytes\n", val);1483 return -EFAULT;1484 }1485 }1486 1487 return 0;1488}1489 1490 1491static const struct fb_ops au1200fb_fb_ops = {1492 .owner = THIS_MODULE,1493 __FB_DEFAULT_DMAMEM_OPS_RDWR,1494 .fb_check_var = au1200fb_fb_check_var,1495 .fb_set_par = au1200fb_fb_set_par,1496 .fb_setcolreg = au1200fb_fb_setcolreg,1497 .fb_blank = au1200fb_fb_blank,1498 __FB_DEFAULT_DMAMEM_OPS_DRAW,1499 .fb_sync = NULL,1500 .fb_ioctl = au1200fb_ioctl,1501 .fb_mmap = au1200fb_fb_mmap,1502};1503 1504/*-------------------------------------------------------------------------*/1505 1506static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)1507{1508 /* Nothing to do for now, just clear any pending interrupt */1509 lcd->intstatus = lcd->intstatus;1510 wmb(); /* drain writebuffer */1511 1512 return IRQ_HANDLED;1513}1514 1515/*-------------------------------------------------------------------------*/1516 1517/* AU1200 LCD device probe helpers */1518 1519static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)1520{1521 struct fb_info *fbi = fbdev->fb_info;1522 int bpp, ret;1523 1524 fbi->fbops = &au1200fb_fb_ops;1525 1526 bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);1527 1528 /* Copy monitor specs from panel data */1529 /* fixme: we're setting up LCD controller windows, so these dont give a1530 damn as to what the monitor specs are (the panel itself does, but that1531 isn't done here...so maybe need a generic catchall monitor setting??? */1532 memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));1533 1534 /* We first try the user mode passed in argument. If that failed,1535 * or if no one has been specified, we default to the first mode of the1536 * panel list. Note that after this call, var data will be set */1537 if (!fb_find_mode(&fbi->var,1538 fbi,1539 NULL, /* drv_info.opt_mode, */1540 fbi->monspecs.modedb,1541 fbi->monspecs.modedb_len,1542 fbi->monspecs.modedb,1543 bpp)) {1544 1545 print_err("Cannot find valid mode for panel %s", panel->name);1546 return -EFAULT;1547 }1548 1549 fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);1550 if (!fbi->pseudo_palette)1551 return -ENOMEM;1552 1553 ret = fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0);1554 if (ret < 0) {1555 print_err("Fail to allocate colormap (%d entries)",1556 AU1200_LCD_NBR_PALETTE_ENTRIES);1557 return ret;1558 }1559 1560 strscpy(fbi->fix.id, "AU1200");1561 fbi->fix.smem_start = fbdev->fb_phys;1562 fbi->fix.smem_len = fbdev->fb_len;1563 fbi->fix.type = FB_TYPE_PACKED_PIXELS;1564 fbi->fix.xpanstep = 0;1565 fbi->fix.ypanstep = 0;1566 fbi->fix.mmio_start = 0;1567 fbi->fix.mmio_len = 0;1568 fbi->fix.accel = FB_ACCEL_NONE;1569 1570 fbi->flags |= FBINFO_VIRTFB;1571 1572 fbi->screen_buffer = fbdev->fb_mem;1573 1574 au1200fb_update_fbinfo(fbi);1575 1576 return 0;1577}1578 1579/*-------------------------------------------------------------------------*/1580 1581 1582static int au1200fb_setup(struct au1200fb_platdata *pd)1583{1584 char *options = NULL;1585 char *this_opt, *endptr;1586 int num_panels = ARRAY_SIZE(known_lcd_panels);1587 int panel_idx = -1;1588 1589 fb_get_options(DRIVER_NAME, &options);1590 1591 if (!options)1592 goto out;1593 1594 while ((this_opt = strsep(&options, ",")) != NULL) {1595 /* Panel option - can be panel name,1596 * "bs" for board-switch, or number/index */1597 if (!strncmp(this_opt, "panel:", 6)) {1598 int i;1599 long int li;1600 char *endptr;1601 this_opt += 6;1602 /* First check for index, which allows1603 * to short circuit this mess */1604 li = simple_strtol(this_opt, &endptr, 0);1605 if (*endptr == '\0')1606 panel_idx = (int)li;1607 else if (strcmp(this_opt, "bs") == 0)1608 panel_idx = pd->panel_index();1609 else {1610 for (i = 0; i < num_panels; i++) {1611 if (!strcmp(this_opt,1612 known_lcd_panels[i].name)) {1613 panel_idx = i;1614 break;1615 }1616 }1617 }1618 if ((panel_idx < 0) || (panel_idx >= num_panels))1619 print_warn("Panel %s not supported!", this_opt);1620 else1621 panel_index = panel_idx;1622 1623 } else if (strncmp(this_opt, "nohwcursor", 10) == 0)1624 nohwcursor = 1;1625 else if (strncmp(this_opt, "devices:", 8) == 0) {1626 this_opt += 8;1627 device_count = simple_strtol(this_opt, &endptr, 0);1628 if ((device_count < 0) ||1629 (device_count > MAX_DEVICE_COUNT))1630 device_count = MAX_DEVICE_COUNT;1631 } else if (strncmp(this_opt, "wincfg:", 7) == 0) {1632 this_opt += 7;1633 window_index = simple_strtol(this_opt, &endptr, 0);1634 if ((window_index < 0) ||1635 (window_index >= ARRAY_SIZE(windows)))1636 window_index = DEFAULT_WINDOW_INDEX;1637 } else if (strncmp(this_opt, "off", 3) == 0)1638 return 1;1639 else1640 print_warn("Unsupported option \"%s\"", this_opt);1641 }1642 1643out:1644 return 0;1645}1646 1647/* AU1200 LCD controller device driver */1648static int au1200fb_drv_probe(struct platform_device *dev)1649{1650 struct au1200fb_device *fbdev;1651 struct au1200fb_platdata *pd;1652 struct fb_info *fbi = NULL;1653 int bpp, plane, ret, irq;1654 1655 print_info("" DRIVER_DESC "");1656 1657 pd = dev->dev.platform_data;1658 if (!pd)1659 return -ENODEV;1660 1661 /* Setup driver with options */1662 if (au1200fb_setup(pd))1663 return -ENODEV;1664 1665 /* Point to the panel selected */1666 panel = &known_lcd_panels[panel_index];1667 win = &windows[window_index];1668 1669 printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);1670 printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);1671 1672 for (plane = 0; plane < device_count; ++plane) {1673 bpp = winbpp(win->w[plane].mode_winctrl1);1674 if (win->w[plane].xres == 0)1675 win->w[plane].xres = panel->Xres;1676 if (win->w[plane].yres == 0)1677 win->w[plane].yres = panel->Yres;1678 1679 fbi = framebuffer_alloc(sizeof(struct au1200fb_device),1680 &dev->dev);1681 if (!fbi) {1682 ret = -ENOMEM;1683 goto failed;1684 }1685 1686 _au1200fb_infos[plane] = fbi;1687 fbdev = fbi->par;1688 fbdev->fb_info = fbi;1689 fbdev->pd = pd;1690 fbdev->dev = &dev->dev;1691 1692 fbdev->plane = plane;1693 1694 /* Allocate the framebuffer to the maximum screen size */1695 fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;1696 1697 fbdev->fb_mem = dmam_alloc_attrs(&dev->dev,1698 PAGE_ALIGN(fbdev->fb_len),1699 &fbdev->fb_phys, GFP_KERNEL, 0);1700 if (!fbdev->fb_mem) {1701 print_err("fail to allocate framebuffer (size: %dK))",1702 fbdev->fb_len / 1024);1703 ret = -ENOMEM;1704 goto failed;1705 }1706 1707 print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);1708 print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);1709 1710 /* Init FB data */1711 ret = au1200fb_init_fbinfo(fbdev);1712 if (ret < 0)1713 goto failed;1714 1715 /* Register new framebuffer */1716 ret = register_framebuffer(fbi);1717 if (ret < 0) {1718 print_err("cannot register new framebuffer");1719 goto failed;1720 }1721 1722 au1200fb_fb_set_par(fbi);1723 }1724 1725 /* Now hook interrupt too */1726 irq = platform_get_irq(dev, 0);1727 if (irq < 0)1728 return irq;1729 1730 ret = request_irq(irq, au1200fb_handle_irq,1731 IRQF_SHARED, "lcd", (void *)dev);1732 if (ret) {1733 print_err("fail to request interrupt line %d (err: %d)",1734 irq, ret);1735 goto failed;1736 }1737 1738 platform_set_drvdata(dev, pd);1739 1740 /* Kickstart the panel */1741 au1200_setpanel(panel, pd);1742 1743 return 0;1744 1745failed:1746 for (plane = 0; plane < device_count; ++plane) {1747 fbi = _au1200fb_infos[plane];1748 if (!fbi)1749 break;1750 1751 /* Clean up all probe data */1752 unregister_framebuffer(fbi);1753 if (fbi->cmap.len != 0)1754 fb_dealloc_cmap(&fbi->cmap);1755 kfree(fbi->pseudo_palette);1756 1757 framebuffer_release(fbi);1758 _au1200fb_infos[plane] = NULL;1759 }1760 return ret;1761}1762 1763static void au1200fb_drv_remove(struct platform_device *dev)1764{1765 struct au1200fb_platdata *pd = platform_get_drvdata(dev);1766 struct fb_info *fbi;1767 int plane;1768 1769 /* Turn off the panel */1770 au1200_setpanel(NULL, pd);1771 1772 for (plane = 0; plane < device_count; ++plane) {1773 fbi = _au1200fb_infos[plane];1774 1775 /* Clean up all probe data */1776 unregister_framebuffer(fbi);1777 if (fbi->cmap.len != 0)1778 fb_dealloc_cmap(&fbi->cmap);1779 kfree(fbi->pseudo_palette);1780 1781 framebuffer_release(fbi);1782 _au1200fb_infos[plane] = NULL;1783 }1784 1785 free_irq(platform_get_irq(dev, 0), (void *)dev);1786}1787 1788#ifdef CONFIG_PM1789static int au1200fb_drv_suspend(struct device *dev)1790{1791 struct au1200fb_platdata *pd = dev_get_drvdata(dev);1792 au1200_setpanel(NULL, pd);1793 1794 lcd->outmask = 0;1795 wmb(); /* drain writebuffer */1796 1797 return 0;1798}1799 1800static int au1200fb_drv_resume(struct device *dev)1801{1802 struct au1200fb_platdata *pd = dev_get_drvdata(dev);1803 struct fb_info *fbi;1804 int i;1805 1806 /* Kickstart the panel */1807 au1200_setpanel(panel, pd);1808 1809 for (i = 0; i < device_count; i++) {1810 fbi = _au1200fb_infos[i];1811 au1200fb_fb_set_par(fbi);1812 }1813 1814 return 0;1815}1816 1817static const struct dev_pm_ops au1200fb_pmops = {1818 .suspend = au1200fb_drv_suspend,1819 .resume = au1200fb_drv_resume,1820 .freeze = au1200fb_drv_suspend,1821 .thaw = au1200fb_drv_resume,1822};1823 1824#define AU1200FB_PMOPS (&au1200fb_pmops)1825 1826#else1827#define AU1200FB_PMOPS NULL1828#endif /* CONFIG_PM */1829 1830static struct platform_driver au1200fb_driver = {1831 .driver = {1832 .name = "au1200-lcd",1833 .pm = AU1200FB_PMOPS,1834 },1835 .probe = au1200fb_drv_probe,1836 .remove = au1200fb_drv_remove,1837};1838module_platform_driver(au1200fb_driver);1839 1840MODULE_DESCRIPTION(DRIVER_DESC);1841MODULE_LICENSE("GPL");1842