drivers/video/fbdev/au1200fb.c

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This source file includes following definitions.
winbpp
fbinfo2index
au1200_setlocation
au1200_setpanel
au1200_setmode
au1200fb_update_fbinfo
au1200fb_fb_check_var
au1200fb_fb_set_par
au1200fb_fb_setcolreg
au1200fb_fb_blank
au1200fb_fb_mmap
set_global
get_global
set_window
get_window
au1200fb_ioctl
au1200fb_handle_irq
au1200fb_init_fbinfo
au1200fb_setup
au1200fb_drv_probe
au1200fb_drv_remove
au1200fb_drv_suspend
au1200fb_drv_resume
   1 /*
   2  * BRIEF MODULE DESCRIPTION
   3  *      Au1200 LCD Driver.
   4  *
   5  * Copyright 2004-2005 AMD
   6  * Author: AMD
   7  *
   8  * Based on:
   9  * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
  10  *  Created 28 Dec 1997 by Geert Uytterhoeven
  11  *
  12  *  This program is free software; you can redistribute  it and/or modify it
  13  *  under  the terms of  the GNU General  Public License as published by the
  14  *  Free Software Foundation;  either version 2 of the  License, or (at your
  15  *  option) any later version.
  16  *
  17  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  18  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  19  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  20  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  21  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  23  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  24  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  25  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  *  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 along
  29  *  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 0
  56 
  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 DEBUG
  62 #define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
  63 #else
  64 #define print_dbg(f, arg...) do {} while (0)
  65 #endif
  66 
  67 
  68 #define AU1200_LCD_FB_IOCTL 0x46FF
  69 
  70 #define AU1200_LCD_SET_SCREEN 1
  71 #define AU1200_LCD_GET_SCREEN 2
  72 #define AU1200_LCD_SET_WINDOW 3
  73 #define AU1200_LCD_GET_WINDOW 4
  74 #define AU1200_LCD_SET_PANEL  5
  75 #define AU1200_LCD_GET_PANEL  6
  76 
  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 
  83 struct 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 
 111 struct 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 
 133 struct 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_11
 141 #else
 142 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
 143 #endif
 144 #define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
 145 
 146 /* Private, per-framebuffer management information (independent of the panel itself) */
 147 struct 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     1280
 162 #define AU1200_LCD_MAX_YRES     1024
 163 #define AU1200_LCD_MAX_BPP      32
 164 #define AU1200_LCD_MAX_CLK      96000000 /* fixme: this needs to go away ? */
 165 #define AU1200_LCD_NBR_PALETTE_ENTRIES 256
 166 
 167 /* Default number of visible screen buffer to allocate */
 168 #define AU1200FB_NBR_VIDEO_BUFFERS 1
 169 
 170 /* Default maximum number of fb devices to create */
 171 #define MAX_DEVICE_COUNT        4
 172 
 173 /* Default window configuration entry to use (see windows[]) */
 174 #define DEFAULT_WINDOW_INDEX    2
 175 
 176 /********************************************************************/
 177 
 178 static struct fb_info *_au1200fb_infos[MAX_DEVICE_COUNT];
 179 static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
 180 static int device_count = MAX_DEVICE_COUNT;
 181 static int window_index = DEFAULT_WINDOW_INDEX; /* default is zero */
 182 static int panel_index = 2; /* default is zero */
 183 static struct window_settings *win;
 184 static struct panel_settings *panel;
 185 static int noblanking = 1;
 186 static int nohwcursor = 0;
 187 
 188 struct 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_00
 205 #else
 206 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
 207 #endif
 208 
 209 /*
 210  * Default window configurations
 211  */
 212 static 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_16BPP565
 261                                 | 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 
 321 struct panel_settings
 322 {
 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_xres
 339 #define Yres min_yres
 340         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 the
 351  * Generic_TFT one, and MAKE SURE that it doesn't conflicts
 352  * with the controller restrictions. Restrictions are:
 353  *
 354  * STN color panels: max_bpp <= 12
 355  * STN mono panels: max_bpp <= 4
 356  * TFT panels: max_bpp <= 16
 357  * max_xres <= 800
 358  * max_yres <= 600
 359  */
 360 static 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 
 653 static 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 
 690 static 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 
 702 static 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 
 772 static void au1200_setpanel(struct panel_settings *newpanel,
 773                             struct au1200fb_platdata *pd)
 774 {
 775         /*
 776          * Perform global setup/init of LCD controller
 777          */
 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 reconfiguring
 786          */
 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 driving
 803                     the controller, the clock cannot be turned off before first
 804                         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 timings
 838          */
 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 valid
 850          * for new geometry */
 851 #if 0
 852         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 #endif
 857         lcd->winenable = winenable;
 858 
 859         /*
 860          * Re-enable screen now that it is configured
 861          */
 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 0
 888 #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 #endif
 935 }
 936 
 937 static void au1200_setmode(struct au1200fb_device *fbdev)
 938 {
 939         int plane = fbdev->plane;
 940         /* Window/plane setup */
 941         lcd->window[plane].winctrl1 = ( 0
 942                 | 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 = ( 0
 949                 | LCD_WINCTRL2_CKMODE_00
 950                 | LCD_WINCTRL2_DBM
 951                 | LCD_WINCTRL2_BX_N(fbdev->fb_info->fix.line_length)
 952                 | LCD_WINCTRL2_SCX_1
 953                 | LCD_WINCTRL2_SCY_1
 954                 ) ;
 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. */
 968 static 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 
1002 static 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_var
1034  * Validate var settings with hardware restrictions and modify it if necessary
1035  */
1036 static 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         plane = fbdev->plane;
1044 
1045         /* Make sure that the mode respect all LCD controller and
1046          * panel restrictions. */
1047         var->xres = win->w[plane].xres;
1048         var->yres = win->w[plane].yres;
1049 
1050         /* No need for virtual resolution support */
1051         var->xres_virtual = var->xres;
1052         var->yres_virtual = var->yres;
1053 
1054         var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
1055 
1056         screen_size = var->xres_virtual * var->yres_virtual;
1057         if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
1058         else screen_size /= (8/var->bits_per_pixel);
1059 
1060         if (fbdev->fb_len < screen_size)
1061                 return -EINVAL; /* Virtual screen is to big, abort */
1062 
1063         /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
1064         /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
1065          * clock can only be obtain by dividing this value by an even integer.
1066          * Fallback to a slower pixel clock if necessary. */
1067         pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
1068         pixclock = min3(pixclock, fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2);
1069 
1070         if (AU1200_LCD_MAX_CLK % pixclock) {
1071                 int diff = AU1200_LCD_MAX_CLK % pixclock;
1072                 pixclock -= diff;
1073         }
1074 
1075         var->pixclock = KHZ2PICOS(pixclock/1000);
1076 #if 0
1077         if (!panel_is_active(panel)) {
1078                 int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
1079 
1080                 if (!panel_is_color(panel)
1081                         && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
1082                         /* STN 8bit mono panel support is up to 6MHz pixclock */
1083                         var->pixclock = KHZ2PICOS(6000);
1084                 } else if (!pcd) {
1085                         /* Other STN panel support is up to 12MHz  */
1086                         var->pixclock = KHZ2PICOS(12000);
1087                 }
1088         }
1089 #endif
1090         /* Set bitfield accordingly */
1091         switch (var->bits_per_pixel) {
1092                 case 16:
1093                 {
1094                         /* 16bpp True color.
1095                          * These must be set to MATCH WINCTRL[FORM] */
1096                         int idx;
1097                         idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1098                         var->red    = rgb_bitfields[idx][0];
1099                         var->green  = rgb_bitfields[idx][1];
1100                         var->blue   = rgb_bitfields[idx][2];
1101                         var->transp = rgb_bitfields[idx][3];
1102                         break;
1103                 }
1104 
1105                 case 32:
1106                 {
1107                         /* 32bpp True color.
1108                          * These must be set to MATCH WINCTRL[FORM] */
1109                         int idx;
1110                         idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1111                         var->red    = rgb_bitfields[idx][0];
1112                         var->green  = rgb_bitfields[idx][1];
1113                         var->blue   = rgb_bitfields[idx][2];
1114                         var->transp = rgb_bitfields[idx][3];
1115                         break;
1116                 }
1117                 default:
1118                         print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
1119                         return -EINVAL;
1120         }
1121 
1122         return 0;
1123 }
1124 
1125 /* fb_set_par
1126  * Set hardware with var settings. This will enable the controller with a
1127  * specific mode, normally validated with the fb_check_var method
1128  */
1129 static int au1200fb_fb_set_par(struct fb_info *fbi)
1130 {
1131         struct au1200fb_device *fbdev = fbi->par;
1132 
1133         au1200fb_update_fbinfo(fbi);
1134         au1200_setmode(fbdev);
1135 
1136         return 0;
1137 }
1138 
1139 /* fb_setcolreg
1140  * Set color in LCD palette.
1141  */
1142 static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1143         unsigned blue, unsigned transp, struct fb_info *fbi)
1144 {
1145         volatile u32 *palette = lcd->palette;
1146         u32 value;
1147 
1148         if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
1149                 return -EINVAL;
1150 
1151         if (fbi->var.grayscale) {
1152                 /* Convert color to grayscale */
1153                 red = green = blue =
1154                         (19595 * red + 38470 * green + 7471 * blue) >> 16;
1155         }
1156 
1157         if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
1158                 /* Place color in the pseudopalette */
1159                 if (regno > 16)
1160                         return -EINVAL;
1161 
1162                 palette = (u32*) fbi->pseudo_palette;
1163 
1164                 red   >>= (16 - fbi->var.red.length);
1165                 green >>= (16 - fbi->var.green.length);
1166                 blue  >>= (16 - fbi->var.blue.length);
1167 
1168                 value = (red   << fbi->var.red.offset)  |
1169                         (green << fbi->var.green.offset)|
1170                         (blue  << fbi->var.blue.offset);
1171                 value &= 0xFFFF;
1172 
1173         } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
1174                 /* COLOR TFT PALLETTIZED (use RGB 565) */
1175                 value = (red & 0xF800)|((green >> 5) &
1176                                 0x07E0)|((blue >> 11) & 0x001F);
1177                 value &= 0xFFFF;
1178 
1179         } else if (0 /*panel_is_color(fbdev->panel)*/) {
1180                 /* COLOR STN MODE */
1181                 value = 0x1234;
1182                 value &= 0xFFF;
1183         } else {
1184                 /* MONOCHROME MODE */
1185                 value = (green >> 12) & 0x000F;
1186                 value &= 0xF;
1187         }
1188 
1189         palette[regno] = value;
1190 
1191         return 0;
1192 }
1193 
1194 /* fb_blank
1195  * Blank the screen. Depending on the mode, the screen will be
1196  * activated with the backlight color, or desactivated
1197  */
1198 static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
1199 {
1200         struct au1200fb_device *fbdev = fbi->par;
1201 
1202         /* Short-circuit screen blanking */
1203         if (noblanking)
1204                 return 0;
1205 
1206         switch (blank_mode) {
1207 
1208         case FB_BLANK_UNBLANK:
1209         case FB_BLANK_NORMAL:
1210                 /* printk("turn on panel\n"); */
1211                 au1200_setpanel(panel, fbdev->pd);
1212                 break;
1213         case FB_BLANK_VSYNC_SUSPEND:
1214         case FB_BLANK_HSYNC_SUSPEND:
1215         case FB_BLANK_POWERDOWN:
1216                 /* printk("turn off panel\n"); */
1217                 au1200_setpanel(NULL, fbdev->pd);
1218                 break;
1219         default:
1220                 break;
1221 
1222         }
1223 
1224         /* FB_BLANK_NORMAL is a soft blank */
1225         return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
1226 }
1227 
1228 /* fb_mmap
1229  * Map video memory in user space. We don't use the generic fb_mmap
1230  * method mainly to allow the use of the TLB streaming flag (CCA=6)
1231  */
1232 static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1233 {
1234         struct au1200fb_device *fbdev = info->par;
1235 
1236         return dma_mmap_attrs(fbdev->dev, vma, fbdev->fb_mem, fbdev->fb_phys,
1237                         fbdev->fb_len, 0);
1238 }
1239 
1240 static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1241 {
1242 
1243         unsigned int hi1, divider;
1244 
1245         /* SCREEN_SIZE: user cannot reset size, must switch panel choice */
1246 
1247         if (pdata->flags & SCREEN_BACKCOLOR)
1248                 lcd->backcolor = pdata->backcolor;
1249 
1250         if (pdata->flags & SCREEN_BRIGHTNESS) {
1251 
1252                 // limit brightness pwm duty to >= 30/1600
1253                 if (pdata->brightness < 30) {
1254                         pdata->brightness = 30;
1255                 }
1256                 divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1257                 hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
1258                 lcd->pwmhi &= 0xFFFF;
1259                 lcd->pwmhi |= (hi1 << 16);
1260         }
1261 
1262         if (pdata->flags & SCREEN_COLORKEY)
1263                 lcd->colorkey = pdata->colorkey;
1264 
1265         if (pdata->flags & SCREEN_MASK)
1266                 lcd->colorkeymsk = pdata->mask;
1267         wmb(); /* drain writebuffer */
1268 }
1269 
1270 static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1271 {
1272         unsigned int hi1, divider;
1273 
1274         pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
1275         pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
1276 
1277         pdata->backcolor = lcd->backcolor;
1278         pdata->colorkey = lcd->colorkey;
1279         pdata->mask = lcd->colorkeymsk;
1280 
1281         // brightness
1282         hi1 = (lcd->pwmhi >> 16) + 1;
1283         divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1284         pdata->brightness = ((hi1 << 8) / divider) - 1;
1285         wmb(); /* drain writebuffer */
1286 }
1287 
1288 static void set_window(unsigned int plane,
1289         struct au1200_lcd_window_regs_t *pdata)
1290 {
1291         unsigned int val, bpp;
1292 
1293         /* Window control register 0 */
1294         if (pdata->flags & WIN_POSITION) {
1295                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
1296                                 LCD_WINCTRL0_OY);
1297                 val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
1298                 val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
1299                 lcd->window[plane].winctrl0 = val;
1300         }
1301         if (pdata->flags & WIN_ALPHA_COLOR) {
1302                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
1303                 val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
1304                 lcd->window[plane].winctrl0 = val;
1305         }
1306         if (pdata->flags & WIN_ALPHA_MODE) {
1307                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
1308                 val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
1309                 lcd->window[plane].winctrl0 = val;
1310         }
1311 
1312         /* Window control register 1 */
1313         if (pdata->flags & WIN_PRIORITY) {
1314                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
1315                 val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
1316                 lcd->window[plane].winctrl1 = val;
1317         }
1318         if (pdata->flags & WIN_CHANNEL) {
1319                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
1320                 val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
1321                 lcd->window[plane].winctrl1 = val;
1322         }
1323         if (pdata->flags & WIN_BUFFER_FORMAT) {
1324                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
1325                 val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
1326                 lcd->window[plane].winctrl1 = val;
1327         }
1328         if (pdata->flags & WIN_COLOR_ORDER) {
1329                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
1330                 val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
1331                 lcd->window[plane].winctrl1 = val;
1332         }
1333         if (pdata->flags & WIN_PIXEL_ORDER) {
1334                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
1335                 val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
1336                 lcd->window[plane].winctrl1 = val;
1337         }
1338         if (pdata->flags & WIN_SIZE) {
1339                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
1340                                 LCD_WINCTRL1_SZY);
1341                 val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
1342                 val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
1343                 lcd->window[plane].winctrl1 = val;
1344                 /* program buffer line width */
1345                 bpp = winbpp(val) / 8;
1346                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
1347                 val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
1348                 lcd->window[plane].winctrl2 = val;
1349         }
1350 
1351         /* Window control register 2 */
1352         if (pdata->flags & WIN_COLORKEY_MODE) {
1353                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
1354                 val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
1355                 lcd->window[plane].winctrl2 = val;
1356         }
1357         if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
1358                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
1359                 val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
1360                 lcd->window[plane].winctrl2 = val;
1361         }
1362         if (pdata->flags & WIN_RAM_ARRAY_MODE) {
1363                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
1364                 val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
1365                 lcd->window[plane].winctrl2 = val;
1366         }
1367 
1368         /* Buffer line width programmed with WIN_SIZE */
1369 
1370         if (pdata->flags & WIN_BUFFER_SCALE) {
1371                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
1372                                 LCD_WINCTRL2_SCY);
1373                 val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
1374                 val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
1375                 lcd->window[plane].winctrl2 = val;
1376         }
1377 
1378         if (pdata->flags & WIN_ENABLE) {
1379                 val = lcd->winenable;
1380                 val &= ~(1<<plane);
1381                 val |= (pdata->enable & 1) << plane;
1382                 lcd->winenable = val;
1383         }
1384         wmb(); /* drain writebuffer */
1385 }
1386 
1387 static void get_window(unsigned int plane,
1388         struct au1200_lcd_window_regs_t *pdata)
1389 {
1390         /* Window control register 0 */
1391         pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
1392         pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
1393         pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
1394         pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
1395 
1396         /* Window control register 1 */
1397         pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
1398         pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
1399         pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1400         pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
1401         pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
1402         pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
1403         pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
1404 
1405         /* Window control register 2 */
1406         pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
1407         pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
1408         pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
1409 
1410         pdata->enable = (lcd->winenable >> plane) & 1;
1411         wmb(); /* drain writebuffer */
1412 }
1413 
1414 static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
1415                           unsigned long arg)
1416 {
1417         struct au1200fb_device *fbdev = info->par;
1418         int plane;
1419         int val;
1420 
1421         plane = fbinfo2index(info);
1422         print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
1423 
1424         if (cmd == AU1200_LCD_FB_IOCTL) {
1425                 struct au1200_lcd_iodata_t iodata;
1426 
1427                 if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
1428                         return -EFAULT;
1429 
1430                 print_dbg("FB IOCTL called\n");
1431 
1432                 switch (iodata.subcmd) {
1433                 case AU1200_LCD_SET_SCREEN:
1434                         print_dbg("AU1200_LCD_SET_SCREEN\n");
1435                         set_global(cmd, &iodata.global);
1436                         break;
1437 
1438                 case AU1200_LCD_GET_SCREEN:
1439                         print_dbg("AU1200_LCD_GET_SCREEN\n");
1440                         get_global(cmd, &iodata.global);
1441                         break;
1442 
1443                 case AU1200_LCD_SET_WINDOW:
1444                         print_dbg("AU1200_LCD_SET_WINDOW\n");
1445                         set_window(plane, &iodata.window);
1446                         break;
1447 
1448                 case AU1200_LCD_GET_WINDOW:
1449                         print_dbg("AU1200_LCD_GET_WINDOW\n");
1450                         get_window(plane, &iodata.window);
1451                         break;
1452 
1453                 case AU1200_LCD_SET_PANEL:
1454                         print_dbg("AU1200_LCD_SET_PANEL\n");
1455                         if ((iodata.global.panel_choice >= 0) &&
1456                                         (iodata.global.panel_choice <
1457                                          NUM_PANELS))
1458                         {
1459                                 struct panel_settings *newpanel;
1460                                 panel_index = iodata.global.panel_choice;
1461                                 newpanel = &known_lcd_panels[panel_index];
1462                                 au1200_setpanel(newpanel, fbdev->pd);
1463                         }
1464                         break;
1465 
1466                 case AU1200_LCD_GET_PANEL:
1467                         print_dbg("AU1200_LCD_GET_PANEL\n");
1468                         iodata.global.panel_choice = panel_index;
1469                         break;
1470 
1471                 default:
1472                         return -EINVAL;
1473                 }
1474 
1475                 val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
1476                 if (val) {
1477                         print_dbg("error: could not copy %d bytes\n", val);
1478                         return -EFAULT;
1479                 }
1480         }
1481 
1482         return 0;
1483 }
1484 
1485 
1486 static struct fb_ops au1200fb_fb_ops = {
1487         .owner          = THIS_MODULE,
1488         .fb_check_var   = au1200fb_fb_check_var,
1489         .fb_set_par     = au1200fb_fb_set_par,
1490         .fb_setcolreg   = au1200fb_fb_setcolreg,
1491         .fb_blank       = au1200fb_fb_blank,
1492         .fb_fillrect    = sys_fillrect,
1493         .fb_copyarea    = sys_copyarea,
1494         .fb_imageblit   = sys_imageblit,
1495         .fb_read        = fb_sys_read,
1496         .fb_write       = fb_sys_write,
1497         .fb_sync        = NULL,
1498         .fb_ioctl       = au1200fb_ioctl,
1499         .fb_mmap        = au1200fb_fb_mmap,
1500 };
1501 
1502 /*-------------------------------------------------------------------------*/
1503 
1504 static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
1505 {
1506         /* Nothing to do for now, just clear any pending interrupt */
1507         lcd->intstatus = lcd->intstatus;
1508         wmb(); /* drain writebuffer */
1509 
1510         return IRQ_HANDLED;
1511 }
1512 
1513 /*-------------------------------------------------------------------------*/
1514 
1515 /* AU1200 LCD device probe helpers */
1516 
1517 static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
1518 {
1519         struct fb_info *fbi = fbdev->fb_info;
1520         int bpp, ret;
1521 
1522         fbi->fbops = &au1200fb_fb_ops;
1523 
1524         bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
1525 
1526         /* Copy monitor specs from panel data */
1527         /* fixme: we're setting up LCD controller windows, so these dont give a
1528         damn as to what the monitor specs are (the panel itself does, but that
1529         isn't done here...so maybe need a generic catchall monitor setting??? */
1530         memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
1531 
1532         /* We first try the user mode passed in argument. If that failed,
1533          * or if no one has been specified, we default to the first mode of the
1534          * panel list. Note that after this call, var data will be set */
1535         if (!fb_find_mode(&fbi->var,
1536                           fbi,
1537                           NULL, /* drv_info.opt_mode, */
1538                           fbi->monspecs.modedb,
1539                           fbi->monspecs.modedb_len,
1540                           fbi->monspecs.modedb,
1541                           bpp)) {
1542 
1543                 print_err("Cannot find valid mode for panel %s", panel->name);
1544                 return -EFAULT;
1545         }
1546 
1547         fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
1548         if (!fbi->pseudo_palette)
1549                 return -ENOMEM;
1550 
1551         ret = fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0);
1552         if (ret < 0) {
1553                 print_err("Fail to allocate colormap (%d entries)",
1554                           AU1200_LCD_NBR_PALETTE_ENTRIES);
1555                 return ret;
1556         }
1557 
1558         strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
1559         fbi->fix.smem_start = fbdev->fb_phys;
1560         fbi->fix.smem_len = fbdev->fb_len;
1561         fbi->fix.type = FB_TYPE_PACKED_PIXELS;
1562         fbi->fix.xpanstep = 0;
1563         fbi->fix.ypanstep = 0;
1564         fbi->fix.mmio_start = 0;
1565         fbi->fix.mmio_len = 0;
1566         fbi->fix.accel = FB_ACCEL_NONE;
1567 
1568         fbi->screen_base = (char __iomem *) fbdev->fb_mem;
1569 
1570         au1200fb_update_fbinfo(fbi);
1571 
1572         return 0;
1573 }
1574 
1575 /*-------------------------------------------------------------------------*/
1576 
1577 
1578 static int au1200fb_setup(struct au1200fb_platdata *pd)
1579 {
1580         char *options = NULL;
1581         char *this_opt, *endptr;
1582         int num_panels = ARRAY_SIZE(known_lcd_panels);
1583         int panel_idx = -1;
1584 
1585         fb_get_options(DRIVER_NAME, &options);
1586 
1587         if (!options)
1588                 goto out;
1589 
1590         while ((this_opt = strsep(&options, ",")) != NULL) {
1591                 /* Panel option - can be panel name,
1592                  * "bs" for board-switch, or number/index */
1593                 if (!strncmp(this_opt, "panel:", 6)) {
1594                         int i;
1595                         long int li;
1596                         char *endptr;
1597                         this_opt += 6;
1598                         /* First check for index, which allows
1599                          * to short circuit this mess */
1600                         li = simple_strtol(this_opt, &endptr, 0);
1601                         if (*endptr == '\0')
1602                                 panel_idx = (int)li;
1603                         else if (strcmp(this_opt, "bs") == 0)
1604                                 panel_idx = pd->panel_index();
1605                         else {
1606                                 for (i = 0; i < num_panels; i++) {
1607                                         if (!strcmp(this_opt,
1608                                                     known_lcd_panels[i].name)) {
1609                                                 panel_idx = i;
1610                                                 break;
1611                                         }
1612                                 }
1613                         }
1614                         if ((panel_idx < 0) || (panel_idx >= num_panels))
1615                                 print_warn("Panel %s not supported!", this_opt);
1616                         else
1617                                 panel_index = panel_idx;
1618 
1619                 } else if (strncmp(this_opt, "nohwcursor", 10) == 0)
1620                         nohwcursor = 1;
1621                 else if (strncmp(this_opt, "devices:", 8) == 0) {
1622                         this_opt += 8;
1623                         device_count = simple_strtol(this_opt, &endptr, 0);
1624                         if ((device_count < 0) ||
1625                             (device_count > MAX_DEVICE_COUNT))
1626                                 device_count = MAX_DEVICE_COUNT;
1627                 } else if (strncmp(this_opt, "wincfg:", 7) == 0) {
1628                         this_opt += 7;
1629                         window_index = simple_strtol(this_opt, &endptr, 0);
1630                         if ((window_index < 0) ||
1631                             (window_index >= ARRAY_SIZE(windows)))
1632                                 window_index = DEFAULT_WINDOW_INDEX;
1633                 } else if (strncmp(this_opt, "off", 3) == 0)
1634                         return 1;
1635                 else
1636                         print_warn("Unsupported option \"%s\"", this_opt);
1637         }
1638 
1639 out:
1640         return 0;
1641 }
1642 
1643 /* AU1200 LCD controller device driver */
1644 static int au1200fb_drv_probe(struct platform_device *dev)
1645 {
1646         struct au1200fb_device *fbdev;
1647         struct au1200fb_platdata *pd;
1648         struct fb_info *fbi = NULL;
1649         int bpp, plane, ret, irq;
1650 
1651         print_info("" DRIVER_DESC "");
1652 
1653         pd = dev->dev.platform_data;
1654         if (!pd)
1655                 return -ENODEV;
1656 
1657         /* Setup driver with options */
1658         if (au1200fb_setup(pd))
1659                 return -ENODEV;
1660 
1661         /* Point to the panel selected */
1662         panel = &known_lcd_panels[panel_index];
1663         win = &windows[window_index];
1664 
1665         printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
1666         printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
1667 
1668         for (plane = 0; plane < device_count; ++plane) {
1669                 bpp = winbpp(win->w[plane].mode_winctrl1);
1670                 if (win->w[plane].xres == 0)
1671                         win->w[plane].xres = panel->Xres;
1672                 if (win->w[plane].yres == 0)
1673                         win->w[plane].yres = panel->Yres;
1674 
1675                 fbi = framebuffer_alloc(sizeof(struct au1200fb_device),
1676                                         &dev->dev);
1677                 if (!fbi) {
1678                         ret = -ENOMEM;
1679                         goto failed;
1680                 }
1681 
1682                 _au1200fb_infos[plane] = fbi;
1683                 fbdev = fbi->par;
1684                 fbdev->fb_info = fbi;
1685                 fbdev->pd = pd;
1686                 fbdev->dev = &dev->dev;
1687 
1688                 fbdev->plane = plane;
1689 
1690                 /* Allocate the framebuffer to the maximum screen size */
1691                 fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
1692 
1693                 fbdev->fb_mem = dmam_alloc_attrs(&dev->dev,
1694                                 PAGE_ALIGN(fbdev->fb_len),
1695                                 &fbdev->fb_phys, GFP_KERNEL, 0);
1696                 if (!fbdev->fb_mem) {
1697                         print_err("fail to allocate framebuffer (size: %dK))",
1698                                   fbdev->fb_len / 1024);
1699                         ret = -ENOMEM;
1700                         goto failed;
1701                 }
1702 
1703                 print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
1704                 print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
1705 
1706                 /* Init FB data */
1707                 ret = au1200fb_init_fbinfo(fbdev);
1708                 if (ret < 0)
1709                         goto failed;
1710 
1711                 /* Register new framebuffer */
1712                 ret = register_framebuffer(fbi);
1713                 if (ret < 0) {
1714                         print_err("cannot register new framebuffer");
1715                         goto failed;
1716                 }
1717 
1718                 au1200fb_fb_set_par(fbi);
1719 
1720 #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
1721                 if (plane == 0)
1722                         if (fb_prepare_logo(fbi, FB_ROTATE_UR)) {
1723                                 /* Start display and show logo on boot */
1724                                 fb_set_cmap(&fbi->cmap, fbi);
1725                                 fb_show_logo(fbi, FB_ROTATE_UR);
1726                         }
1727 #endif
1728         }
1729 
1730         /* Now hook interrupt too */
1731         irq = platform_get_irq(dev, 0);
1732         ret = request_irq(irq, au1200fb_handle_irq,
1733                           IRQF_SHARED, "lcd", (void *)dev);
1734         if (ret) {
1735                 print_err("fail to request interrupt line %d (err: %d)",
1736                           irq, ret);
1737                 goto failed;
1738         }
1739 
1740         platform_set_drvdata(dev, pd);
1741 
1742         /* Kickstart the panel */
1743         au1200_setpanel(panel, pd);
1744 
1745         return 0;
1746 
1747 failed:
1748         for (plane = 0; plane < device_count; ++plane) {
1749                 fbi = _au1200fb_infos[plane];
1750                 if (!fbi)
1751                         break;
1752 
1753                 /* Clean up all probe data */
1754                 unregister_framebuffer(fbi);
1755                 if (fbi->cmap.len != 0)
1756                         fb_dealloc_cmap(&fbi->cmap);
1757                 kfree(fbi->pseudo_palette);
1758 
1759                 framebuffer_release(fbi);
1760                 _au1200fb_infos[plane] = NULL;
1761         }
1762         return ret;
1763 }
1764 
1765 static int au1200fb_drv_remove(struct platform_device *dev)
1766 {
1767         struct au1200fb_platdata *pd = platform_get_drvdata(dev);
1768         struct fb_info *fbi;
1769         int plane;
1770 
1771         /* Turn off the panel */
1772         au1200_setpanel(NULL, pd);
1773 
1774         for (plane = 0; plane < device_count; ++plane)  {
1775                 fbi = _au1200fb_infos[plane];
1776 
1777                 /* Clean up all probe data */
1778                 unregister_framebuffer(fbi);
1779                 if (fbi->cmap.len != 0)
1780                         fb_dealloc_cmap(&fbi->cmap);
1781                 kfree(fbi->pseudo_palette);
1782 
1783                 framebuffer_release(fbi);
1784                 _au1200fb_infos[plane] = NULL;
1785         }
1786 
1787         free_irq(platform_get_irq(dev, 0), (void *)dev);
1788 
1789         return 0;
1790 }
1791 
1792 #ifdef CONFIG_PM
1793 static int au1200fb_drv_suspend(struct device *dev)
1794 {
1795         struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1796         au1200_setpanel(NULL, pd);
1797 
1798         lcd->outmask = 0;
1799         wmb(); /* drain writebuffer */
1800 
1801         return 0;
1802 }
1803 
1804 static int au1200fb_drv_resume(struct device *dev)
1805 {
1806         struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1807         struct fb_info *fbi;
1808         int i;
1809 
1810         /* Kickstart the panel */
1811         au1200_setpanel(panel, pd);
1812 
1813         for (i = 0; i < device_count; i++) {
1814                 fbi = _au1200fb_infos[i];
1815                 au1200fb_fb_set_par(fbi);
1816         }
1817 
1818         return 0;
1819 }
1820 
1821 static const struct dev_pm_ops au1200fb_pmops = {
1822         .suspend        = au1200fb_drv_suspend,
1823         .resume         = au1200fb_drv_resume,
1824         .freeze         = au1200fb_drv_suspend,
1825         .thaw           = au1200fb_drv_resume,
1826 };
1827 
1828 #define AU1200FB_PMOPS  (&au1200fb_pmops)
1829 
1830 #else
1831 #define AU1200FB_PMOPS  NULL
1832 #endif /* CONFIG_PM */
1833 
1834 static struct platform_driver au1200fb_driver = {
1835         .driver = {
1836                 .name   = "au1200-lcd",
1837                 .pm     = AU1200FB_PMOPS,
1838         },
1839         .probe          = au1200fb_drv_probe,
1840         .remove         = au1200fb_drv_remove,
1841 };
1842 module_platform_driver(au1200fb_driver);
1843 
1844 MODULE_DESCRIPTION(DRIVER_DESC);
1845 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/video/fbdev/au1200fb.c

DEFINITIONS
