drivers/video/au1200fb.c

   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/module.h>
  34 #include <linux/platform_device.h>
  35 #include <linux/kernel.h>
  36 #include <linux/errno.h>
  37 #include <linux/string.h>
  38 #include <linux/mm.h>
  39 #include <linux/fb.h>
  40 #include <linux/init.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/ctype.h>
  43 #include <linux/dma-mapping.h>
  44 #include <linux/slab.h>
  45
  46 #include <asm/mach-au1x00/au1000.h>
  47 #include <asm/mach-au1x00/au1200fb.h>   /* platform_data */
  48 #include "au1200fb.h"
  49
  50 #define DRIVER_NAME "au1200fb"
  51 #define DRIVER_DESC "LCD controller driver for AU1200 processors"
  52
  53 #define DEBUG 0
  54
  55 #define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
  56 #define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
  57 #define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
  58
  59 #if DEBUG
  60 #define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
  61 #else
  62 #define print_dbg(f, arg...) do {} while (0)
  63 #endif
  64
  65
  66 #define AU1200_LCD_FB_IOCTL 0x46FF
  67
  68 #define AU1200_LCD_SET_SCREEN 1
  69 #define AU1200_LCD_GET_SCREEN 2
  70 #define AU1200_LCD_SET_WINDOW 3
  71 #define AU1200_LCD_GET_WINDOW 4
  72 #define AU1200_LCD_SET_PANEL  5
  73 #define AU1200_LCD_GET_PANEL  6
  74
  75 #define SCREEN_SIZE                 (1<< 1)
  76 #define SCREEN_BACKCOLOR    (1<< 2)
  77 #define SCREEN_BRIGHTNESS   (1<< 3)
  78 #define SCREEN_COLORKEY     (1<< 4)
  79 #define SCREEN_MASK         (1<< 5)
  80
  81 struct au1200_lcd_global_regs_t {
  82         unsigned int flags;
  83         unsigned int xsize;
  84         unsigned int ysize;
  85         unsigned int backcolor;
  86         unsigned int brightness;
  87         unsigned int colorkey;
  88         unsigned int mask;
  89         unsigned int panel_choice;
  90         char panel_desc[80];
  91
  92 };
  93
  94 #define WIN_POSITION            (1<< 0)
  95 #define WIN_ALPHA_COLOR         (1<< 1)
  96 #define WIN_ALPHA_MODE          (1<< 2)
  97 #define WIN_PRIORITY            (1<< 3)
  98 #define WIN_CHANNEL             (1<< 4)
  99 #define WIN_BUFFER_FORMAT       (1<< 5)
 100 #define WIN_COLOR_ORDER         (1<< 6)
 101 #define WIN_PIXEL_ORDER         (1<< 7)
 102 #define WIN_SIZE                (1<< 8)
 103 #define WIN_COLORKEY_MODE       (1<< 9)
 104 #define WIN_DOUBLE_BUFFER_MODE  (1<< 10)
 105 #define WIN_RAM_ARRAY_MODE      (1<< 11)
 106 #define WIN_BUFFER_SCALE        (1<< 12)
 107 #define WIN_ENABLE                  (1<< 13)
 108
 109 struct au1200_lcd_window_regs_t {
 110         unsigned int flags;
 111         unsigned int xpos;
 112         unsigned int ypos;
 113         unsigned int alpha_color;
 114         unsigned int alpha_mode;
 115         unsigned int priority;
 116         unsigned int channel;
 117         unsigned int buffer_format;
 118         unsigned int color_order;
 119         unsigned int pixel_order;
 120         unsigned int xsize;
 121         unsigned int ysize;
 122         unsigned int colorkey_mode;
 123         unsigned int double_buffer_mode;
 124         unsigned int ram_array_mode;
 125         unsigned int xscale;
 126         unsigned int yscale;
 127         unsigned int enable;
 128 };
 129
 130
 131 struct au1200_lcd_iodata_t {
 132         unsigned int subcmd;
 133         struct au1200_lcd_global_regs_t global;
 134         struct au1200_lcd_window_regs_t window;
 135 };
 136
 137 #if defined(__BIG_ENDIAN)
 138 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
 139 #else
 140 #define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
 141 #endif
 142 #define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
 143
 144 /* Private, per-framebuffer management information (independent of the panel itself) */
 145 struct au1200fb_device {
 146         struct fb_info *fb_info;                /* FB driver info record */
 147         struct au1200fb_platdata *pd;
 148
 149         int                                     plane;
 150         unsigned char*          fb_mem;         /* FrameBuffer memory map */
 151         unsigned int            fb_len;
 152         dma_addr_t              fb_phys;
 153 };
 154
 155 /********************************************************************/
 156
 157 /* LCD controller restrictions */
 158 #define AU1200_LCD_MAX_XRES     1280
 159 #define AU1200_LCD_MAX_YRES     1024
 160 #define AU1200_LCD_MAX_BPP      32
 161 #define AU1200_LCD_MAX_CLK      96000000 /* fixme: this needs to go away ? */
 162 #define AU1200_LCD_NBR_PALETTE_ENTRIES 256
 163
 164 /* Default number of visible screen buffer to allocate */
 165 #define AU1200FB_NBR_VIDEO_BUFFERS 1
 166
 167 /* Default maximum number of fb devices to create */
 168 #define MAX_DEVICE_COUNT        4
 169
 170 /* Default window configuration entry to use (see windows[]) */
 171 #define DEFAULT_WINDOW_INDEX    2
 172
 173 /********************************************************************/
 174
 175 static struct fb_info *_au1200fb_infos[MAX_DEVICE_COUNT];
 176 static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
 177 static int device_count = MAX_DEVICE_COUNT;
 178 static int window_index = DEFAULT_WINDOW_INDEX; /* default is zero */
 179 static int panel_index = 2; /* default is zero */
 180 static struct window_settings *win;
 181 static struct panel_settings *panel;
 182 static int noblanking = 1;
 183 static int nohwcursor = 0;
 184
 185 struct window_settings {
 186         unsigned char name[64];
 187         uint32 mode_backcolor;
 188         uint32 mode_colorkey;
 189         uint32 mode_colorkeymsk;
 190         struct {
 191                 int xres;
 192                 int yres;
 193                 int xpos;
 194                 int ypos;
 195                 uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
 196                 uint32 mode_winenable;
 197         } w[4];
 198 };
 199
 200 #if defined(__BIG_ENDIAN)
 201 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
 202 #else
 203 #define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
 204 #endif
 205
 206 /*
 207  * Default window configurations
 208  */
 209 static struct window_settings windows[] = {
 210         { /* Index 0 */
 211                 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 212                 /* mode_backcolor       */ 0x006600ff,
 213                 /* mode_colorkey,msk*/ 0, 0,
 214                 {
 215                         {
 216                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 217                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 218                                 LCD_WINCTRL1_PO_16BPP,
 219                         /* mode_winenable*/ LCD_WINENABLE_WEN0,
 220                         },
 221                         {
 222                         /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
 223                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 224                                 LCD_WINCTRL1_PO_16BPP |
 225                                 LCD_WINCTRL1_PIPE,
 226                         /* mode_winenable*/ LCD_WINENABLE_WEN1,
 227                         },
 228                         {
 229                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 230                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 231                                 LCD_WINCTRL1_PO_16BPP,
 232                         /* mode_winenable*/ 0,
 233                         },
 234                         {
 235                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 236                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 237                                 LCD_WINCTRL1_PO_16BPP |
 238                                 LCD_WINCTRL1_PIPE,
 239                         /* mode_winenable*/ 0,
 240                         },
 241                 },
 242         },
 243
 244         { /* Index 1 */
 245                 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 246                 /* mode_backcolor       */ 0x006600ff,
 247                 /* mode_colorkey,msk*/ 0, 0,
 248                 {
 249                         {
 250                         /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
 251                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
 252                                 LCD_WINCTRL1_PO_00,
 253                         /* mode_winenable*/ LCD_WINENABLE_WEN0,
 254                         },
 255                         {
 256                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 257                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
 258                                 | LCD_WINCTRL1_PO_16BPP,
 259                         /* mode_winenable*/ 0,
 260                         },
 261                         {
 262                         /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
 263                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 264                                 LCD_WINCTRL1_PO_16BPP |
 265                                 LCD_WINCTRL1_PIPE,
 266                         /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
 267                         },
 268                         {
 269                         /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
 270                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 271                                 LCD_WINCTRL1_PO_16BPP |
 272                                 LCD_WINCTRL1_PIPE,
 273                         /* mode_winenable*/ 0,
 274                         },
 275                 },
 276         },
 277         { /* Index 2 */
 278                 "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
 279                 /* mode_backcolor       */ 0x006600ff,
 280                 /* mode_colorkey,msk*/ 0, 0,
 281                 {
 282                         {
 283                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 284                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 285                                 LCD_WINCTRL1_PO_16BPP,
 286                         /* mode_winenable*/ LCD_WINENABLE_WEN0,
 287                         },
 288                         {
 289                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 290                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 291                                 LCD_WINCTRL1_PO_16BPP,
 292                         /* mode_winenable*/ 0,
 293                         },
 294                         {
 295                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 296                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
 297                                 LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
 298                         /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
 299                         },
 300                         {
 301                         /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
 302                         /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
 303                                 LCD_WINCTRL1_PO_16BPP |
 304                                 LCD_WINCTRL1_PIPE,
 305                         /* mode_winenable*/ 0,
 306                         },
 307                 },
 308         },
 309         /* Need VGA 640 @ 24bpp, @ 32bpp */
 310         /* Need VGA 800 @ 24bpp, @ 32bpp */
 311         /* Need VGA 1024 @ 24bpp, @ 32bpp */
 312 };
 313
 314 /*
 315  * Controller configurations for various panels.
 316  */
 317
 318 struct panel_settings
 319 {
 320         const char name[25];            /* Full name <vendor>_<model> */
 321
 322         struct  fb_monspecs monspecs;   /* FB monitor specs */
 323
 324         /* panel timings */
 325         uint32 mode_screen;
 326         uint32 mode_horztiming;
 327         uint32 mode_verttiming;
 328         uint32 mode_clkcontrol;
 329         uint32 mode_pwmdiv;
 330         uint32 mode_pwmhi;
 331         uint32 mode_outmask;
 332         uint32 mode_fifoctrl;
 333         uint32 mode_toyclksrc;
 334         uint32 mode_backlight;
 335         uint32 mode_auxpll;
 336 #define Xres min_xres
 337 #define Yres min_yres
 338         u32     min_xres;               /* Minimum horizontal resolution */
 339         u32     max_xres;               /* Maximum horizontal resolution */
 340         u32     min_yres;               /* Minimum vertical resolution */
 341         u32     max_yres;               /* Maximum vertical resolution */
 342 };
 343
 344 /********************************************************************/
 345 /* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
 346
 347 /* List of panels known to work with the AU1200 LCD controller.
 348  * To add a new panel, enter the same specifications as the
 349  * Generic_TFT one, and MAKE SURE that it doesn't conflicts
 350  * with the controller restrictions. Restrictions are:
 351  *
 352  * STN color panels: max_bpp <= 12
 353  * STN mono panels: max_bpp <= 4
 354  * TFT panels: max_bpp <= 16
 355  * max_xres <= 800
 356  * max_yres <= 600
 357  */
 358 static struct panel_settings known_lcd_panels[] =
 359 {
 360         [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
 361                 .name = "QVGA_320x240",
 362                 .monspecs = {
 363                         .modedb = NULL,
 364                         .modedb_len = 0,
 365                         .hfmin = 30000,
 366                         .hfmax = 70000,
 367                         .vfmin = 60,
 368                         .vfmax = 60,
 369                         .dclkmin = 6000000,
 370                         .dclkmax = 28000000,
 371                         .input = FB_DISP_RGB,
 372                 },
 373                 .mode_screen            = LCD_SCREEN_SX_N(320) |
 374                         LCD_SCREEN_SY_N(240),
 375                 .mode_horztiming        = 0x00c4623b,
 376                 .mode_verttiming        = 0x00502814,
 377                 .mode_clkcontrol        = 0x00020002, /* /4=24Mhz */
 378                 .mode_pwmdiv            = 0x00000000,
 379                 .mode_pwmhi             = 0x00000000,
 380                 .mode_outmask   = 0x00FFFFFF,
 381                 .mode_fifoctrl  = 0x2f2f2f2f,
 382                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 383                 .mode_backlight = 0x00000000,
 384                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 385                 320, 320,
 386                 240, 240,
 387         },
 388
 389         [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
 390                 .name = "VGA_640x480",
 391                 .monspecs = {
 392                         .modedb = NULL,
 393                         .modedb_len = 0,
 394                         .hfmin = 30000,
 395                         .hfmax = 70000,
 396                         .vfmin = 60,
 397                         .vfmax = 60,
 398                         .dclkmin = 6000000,
 399                         .dclkmax = 28000000,
 400                         .input = FB_DISP_RGB,
 401                 },
 402                 .mode_screen            = 0x13f9df80,
 403                 .mode_horztiming        = 0x003c5859,
 404                 .mode_verttiming        = 0x00741201,
 405                 .mode_clkcontrol        = 0x00020001, /* /4=24Mhz */
 406                 .mode_pwmdiv            = 0x00000000,
 407                 .mode_pwmhi             = 0x00000000,
 408                 .mode_outmask   = 0x00FFFFFF,
 409                 .mode_fifoctrl  = 0x2f2f2f2f,
 410                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 411                 .mode_backlight = 0x00000000,
 412                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 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_toyclksrc = 0x00000004, /* AUXPLL directly */
 439                 .mode_backlight = 0x00000000,
 440                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 441                 800, 800,
 442                 600, 600,
 443         },
 444
 445         [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
 446                 .name = "XVGA_1024x768",
 447                 .monspecs = {
 448                         .modedb = NULL,
 449                         .modedb_len = 0,
 450                         .hfmin = 30000,
 451                         .hfmax = 70000,
 452                         .vfmin = 60,
 453                         .vfmax = 60,
 454                         .dclkmin = 6000000,
 455                         .dclkmax = 28000000,
 456                         .input = FB_DISP_RGB,
 457                 },
 458                 .mode_screen            = 0x1ffaff80,
 459                 .mode_horztiming        = 0x007d0e57,
 460                 .mode_verttiming        = 0x00740a01,
 461                 .mode_clkcontrol        = 0x000A0000, /* /1 */
 462                 .mode_pwmdiv            = 0x00000000,
 463                 .mode_pwmhi             = 0x00000000,
 464                 .mode_outmask   = 0x00FFFFFF,
 465                 .mode_fifoctrl  = 0x2f2f2f2f,
 466                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 467                 .mode_backlight = 0x00000000,
 468                 .mode_auxpll            = 6, /* 72MHz AUXPLL */
 469                 1024, 1024,
 470                 768, 768,
 471         },
 472
 473         [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
 474                 .name = "XVGA_1280x1024",
 475                 .monspecs = {
 476                         .modedb = NULL,
 477                         .modedb_len = 0,
 478                         .hfmin = 30000,
 479                         .hfmax = 70000,
 480                         .vfmin = 60,
 481                         .vfmax = 60,
 482                         .dclkmin = 6000000,
 483                         .dclkmax = 28000000,
 484                         .input = FB_DISP_RGB,
 485                 },
 486                 .mode_screen            = 0x27fbff80,
 487                 .mode_horztiming        = 0x00cdb2c7,
 488                 .mode_verttiming        = 0x00600002,
 489                 .mode_clkcontrol        = 0x000A0000, /* /1 */
 490                 .mode_pwmdiv            = 0x00000000,
 491                 .mode_pwmhi             = 0x00000000,
 492                 .mode_outmask   = 0x00FFFFFF,
 493                 .mode_fifoctrl  = 0x2f2f2f2f,
 494                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 495                 .mode_backlight = 0x00000000,
 496                 .mode_auxpll            = 10, /* 120MHz AUXPLL */
 497                 1280, 1280,
 498                 1024, 1024,
 499         },
 500
 501         [5] = { /* Samsung 1024x768 TFT */
 502                 .name = "Samsung_1024x768_TFT",
 503                 .monspecs = {
 504                         .modedb = NULL,
 505                         .modedb_len = 0,
 506                         .hfmin = 30000,
 507                         .hfmax = 70000,
 508                         .vfmin = 60,
 509                         .vfmax = 60,
 510                         .dclkmin = 6000000,
 511                         .dclkmax = 28000000,
 512                         .input = FB_DISP_RGB,
 513                 },
 514                 .mode_screen            = 0x1ffaff80,
 515                 .mode_horztiming        = 0x018cc677,
 516                 .mode_verttiming        = 0x00241217,
 517                 .mode_clkcontrol        = 0x00000000, /* SCB 0x1 /4=24Mhz */
 518                 .mode_pwmdiv            = 0x8000063f, /* SCB 0x0 */
 519                 .mode_pwmhi             = 0x03400000, /* SCB 0x0 */
 520                 .mode_outmask   = 0x00FFFFFF,
 521                 .mode_fifoctrl  = 0x2f2f2f2f,
 522                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 523                 .mode_backlight = 0x00000000,
 524                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 525                 1024, 1024,
 526                 768, 768,
 527         },
 528
 529         [6] = { /* Toshiba 640x480 TFT */
 530                 .name = "Toshiba_640x480_TFT",
 531                 .monspecs = {
 532                         .modedb = NULL,
 533                         .modedb_len = 0,
 534                         .hfmin = 30000,
 535                         .hfmax = 70000,
 536                         .vfmin = 60,
 537                         .vfmax = 60,
 538                         .dclkmin = 6000000,
 539                         .dclkmax = 28000000,
 540                         .input = FB_DISP_RGB,
 541                 },
 542                 .mode_screen            = LCD_SCREEN_SX_N(640) |
 543                         LCD_SCREEN_SY_N(480),
 544                 .mode_horztiming        = LCD_HORZTIMING_HPW_N(96) |
 545                         LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
 546                 .mode_verttiming        = LCD_VERTTIMING_VPW_N(2) |
 547                         LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
 548                 .mode_clkcontrol        = 0x00000000, /* /4=24Mhz */
 549                 .mode_pwmdiv            = 0x8000063f,
 550                 .mode_pwmhi             = 0x03400000,
 551                 .mode_outmask   = 0x00fcfcfc,
 552                 .mode_fifoctrl  = 0x2f2f2f2f,
 553                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 554                 .mode_backlight = 0x00000000,
 555                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 556                 640, 480,
 557                 640, 480,
 558         },
 559
 560         [7] = { /* Sharp 320x240 TFT */
 561                 .name = "Sharp_320x240_TFT",
 562                 .monspecs = {
 563                         .modedb = NULL,
 564                         .modedb_len = 0,
 565                         .hfmin = 12500,
 566                         .hfmax = 20000,
 567                         .vfmin = 38,
 568                         .vfmax = 81,
 569                         .dclkmin = 4500000,
 570                         .dclkmax = 6800000,
 571                         .input = FB_DISP_RGB,
 572                 },
 573                 .mode_screen            = LCD_SCREEN_SX_N(320) |
 574                         LCD_SCREEN_SY_N(240),
 575                 .mode_horztiming        = LCD_HORZTIMING_HPW_N(60) |
 576                         LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
 577                 .mode_verttiming        = LCD_VERTTIMING_VPW_N(2) |
 578                         LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
 579                 .mode_clkcontrol        = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
 580                 .mode_pwmdiv            = 0x8000063f,
 581                 .mode_pwmhi             = 0x03400000,
 582                 .mode_outmask   = 0x00fcfcfc,
 583                 .mode_fifoctrl  = 0x2f2f2f2f,
 584                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 585                 .mode_backlight = 0x00000000,
 586                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 587                 320, 320,
 588                 240, 240,
 589         },
 590
 591         [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
 592                 .name = "Toppoly_TD070WGCB2",
 593                 .monspecs = {
 594                         .modedb = NULL,
 595                         .modedb_len = 0,
 596                         .hfmin = 30000,
 597                         .hfmax = 70000,
 598                         .vfmin = 60,
 599                         .vfmax = 60,
 600                         .dclkmin = 6000000,
 601                         .dclkmax = 28000000,
 602                         .input = FB_DISP_RGB,
 603                 },
 604                 .mode_screen            = LCD_SCREEN_SX_N(856) |
 605                         LCD_SCREEN_SY_N(480),
 606                 .mode_horztiming        = LCD_HORZTIMING_HND2_N(43) |
 607                         LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
 608                 .mode_verttiming        = LCD_VERTTIMING_VND2_N(20) |
 609                         LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
 610                 .mode_clkcontrol        = 0x00020001, /* /4=24Mhz */
 611                 .mode_pwmdiv            = 0x8000063f,
 612                 .mode_pwmhi             = 0x03400000,
 613                 .mode_outmask   = 0x00fcfcfc,
 614                 .mode_fifoctrl  = 0x2f2f2f2f,
 615                 .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
 616                 .mode_backlight = 0x00000000,
 617                 .mode_auxpll            = 8, /* 96MHz AUXPLL */
 618                 856, 856,
 619                 480, 480,
 620         },
 621         [9] = {
 622                 .name = "DB1300_800x480",
 623                 .monspecs = {
 624                         .modedb = NULL,
 625                         .modedb_len = 0,
 626                         .hfmin = 30000,
 627                         .hfmax = 70000,
 628                         .vfmin = 60,
 629                         .vfmax = 60,
 630                         .dclkmin = 6000000,
 631                         .dclkmax = 28000000,
 632                         .input = FB_DISP_RGB,
 633                 },
 634                 .mode_screen            = LCD_SCREEN_SX_N(800) |
 635                                           LCD_SCREEN_SY_N(480),
 636                 .mode_horztiming        = LCD_HORZTIMING_HPW_N(5) |
 637                                           LCD_HORZTIMING_HND1_N(16) |
 638                                           LCD_HORZTIMING_HND2_N(8),
 639                 .mode_verttiming        = LCD_VERTTIMING_VPW_N(4) |
 640                                           LCD_VERTTIMING_VND1_N(8) |
 641                                           LCD_VERTTIMING_VND2_N(5),
 642                 .mode_clkcontrol        = LCD_CLKCONTROL_PCD_N(1) |
 643                                           LCD_CLKCONTROL_IV |
 644                                           LCD_CLKCONTROL_IH,
 645                 .mode_pwmdiv            = 0x00000000,
 646                 .mode_pwmhi             = 0x00000000,
 647                 .mode_outmask           = 0x00FFFFFF,
 648                 .mode_fifoctrl          = 0x2f2f2f2f,
 649                 .mode_toyclksrc         = 0x00000004, /* AUXPLL directly */
 650                 .mode_backlight         = 0x00000000,
 651                 .mode_auxpll            = (48/12) * 2,
 652                 800, 800,
 653                 480, 480,
 654         },
 655 };
 656
 657 #define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
 658
 659 /********************************************************************/
 660
 661 static int winbpp (unsigned int winctrl1)
 662 {
 663         int bits = 0;
 664
 665         /* how many bits are needed for each pixel format */
 666         switch (winctrl1 & LCD_WINCTRL1_FRM) {
 667         case LCD_WINCTRL1_FRM_1BPP:
 668                 bits = 1;
 669                 break;
 670         case LCD_WINCTRL1_FRM_2BPP:
 671                 bits = 2;
 672                 break;
 673         case LCD_WINCTRL1_FRM_4BPP:
 674                 bits = 4;
 675                 break;
 676         case LCD_WINCTRL1_FRM_8BPP:
 677                 bits = 8;
 678                 break;
 679         case LCD_WINCTRL1_FRM_12BPP:
 680         case LCD_WINCTRL1_FRM_16BPP655:
 681         case LCD_WINCTRL1_FRM_16BPP565:
 682         case LCD_WINCTRL1_FRM_16BPP556:
 683         case LCD_WINCTRL1_FRM_16BPPI1555:
 684         case LCD_WINCTRL1_FRM_16BPPI5551:
 685         case LCD_WINCTRL1_FRM_16BPPA1555:
 686         case LCD_WINCTRL1_FRM_16BPPA5551:
 687                 bits = 16;
 688                 break;
 689         case LCD_WINCTRL1_FRM_24BPP:
 690         case LCD_WINCTRL1_FRM_32BPP:
 691                 bits = 32;
 692                 break;
 693         }
 694
 695         return bits;
 696 }
 697
 698 static int fbinfo2index (struct fb_info *fb_info)
 699 {
 700         int i;
 701
 702         for (i = 0; i < device_count; ++i) {
 703                 if (fb_info == _au1200fb_infos[i])
 704                         return i;
 705         }
 706         printk("au1200fb: ERROR: fbinfo2index failed!\n");
 707         return -1;
 708 }
 709
 710 static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
 711         int xpos, int ypos)
 712 {
 713         uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
 714         int xsz, ysz;
 715
 716         /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
 717
 718         winctrl0 = lcd->window[plane].winctrl0;
 719         winctrl1 = lcd->window[plane].winctrl1;
 720         winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
 721         winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
 722
 723         /* Check for off-screen adjustments */
 724         xsz = win->w[plane].xres;
 725         ysz = win->w[plane].yres;
 726         if ((xpos + win->w[plane].xres) > panel->Xres) {
 727                 /* Off-screen to the right */
 728                 xsz = panel->Xres - xpos; /* off by 1 ??? */
 729                 /*printk("off screen right\n");*/
 730         }
 731
 732         if ((ypos + win->w[plane].yres) > panel->Yres) {
 733                 /* Off-screen to the bottom */
 734                 ysz = panel->Yres - ypos; /* off by 1 ??? */
 735                 /*printk("off screen bottom\n");*/
 736         }
 737
 738         if (xpos < 0) {
 739                 /* Off-screen to the left */
 740                 xsz = win->w[plane].xres + xpos;
 741                 fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
 742                 xpos = 0;
 743                 /*printk("off screen left\n");*/
 744         }
 745
 746         if (ypos < 0) {
 747                 /* Off-screen to the top */
 748                 ysz = win->w[plane].yres + ypos;
 749                 /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
 750                 ypos = 0;
 751                 /*printk("off screen top\n");*/
 752         }
 753
 754         /* record settings */
 755         win->w[plane].xpos = xpos;
 756         win->w[plane].ypos = ypos;
 757
 758         xsz -= 1;
 759         ysz -= 1;
 760         winctrl0 |= (xpos << 21);
 761         winctrl0 |= (ypos << 10);
 762         winctrl1 |= (xsz << 11);
 763         winctrl1 |= (ysz << 0);
 764
 765         /* Disable the window while making changes, then restore WINEN */
 766         winenable = lcd->winenable & (1 << plane);
 767         au_sync();
 768         lcd->winenable &= ~(1 << plane);
 769         lcd->window[plane].winctrl0 = winctrl0;
 770         lcd->window[plane].winctrl1 = winctrl1;
 771         lcd->window[plane].winbuf0 =
 772         lcd->window[plane].winbuf1 = fbdev->fb_phys;
 773         lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
 774         lcd->winenable |= winenable;
 775         au_sync();
 776
 777         return 0;
 778 }
 779
 780 static void au1200_setpanel(struct panel_settings *newpanel,
 781                             struct au1200fb_platdata *pd)
 782 {
 783         /*
 784          * Perform global setup/init of LCD controller
 785          */
 786         uint32 winenable;
 787
 788         /* Make sure all windows disabled */
 789         winenable = lcd->winenable;
 790         lcd->winenable = 0;
 791         au_sync();
 792         /*
 793          * Ensure everything is disabled before reconfiguring
 794          */
 795         if (lcd->screen & LCD_SCREEN_SEN) {
 796                 /* Wait for vertical sync period */
 797                 lcd->intstatus = LCD_INT_SS;
 798                 while ((lcd->intstatus & LCD_INT_SS) == 0) {
 799                         au_sync();
 800                 }
 801
 802                 lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
 803
 804                 do {
 805                         lcd->intstatus = lcd->intstatus; /*clear interrupts*/
 806                         au_sync();
 807                 /*wait for controller to shut down*/
 808                 } while ((lcd->intstatus & LCD_INT_SD) == 0);
 809
 810                 /* Call shutdown of current panel (if up) */
 811                 /* this must occur last, because if an external clock is driving
 812                     the controller, the clock cannot be turned off before first
 813                         shutting down the controller.
 814                  */
 815                 if (pd->panel_shutdown)
 816                         pd->panel_shutdown();
 817         }
 818
 819         /* Newpanel == NULL indicates a shutdown operation only */
 820         if (newpanel == NULL)
 821                 return;
 822
 823         panel = newpanel;
 824
 825         printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
 826
 827         /*
 828          * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
 829          */
 830         if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
 831         {
 832                 uint32 sys_clksrc;
 833                 au_writel(panel->mode_auxpll, SYS_AUXPLL);
 834                 sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
 835                 sys_clksrc |= panel->mode_toyclksrc;
 836                 au_writel(sys_clksrc, SYS_CLKSRC);
 837         }
 838
 839         /*
 840          * Configure panel timings
 841          */
 842         lcd->screen = panel->mode_screen;
 843         lcd->horztiming = panel->mode_horztiming;
 844         lcd->verttiming = panel->mode_verttiming;
 845         lcd->clkcontrol = panel->mode_clkcontrol;
 846         lcd->pwmdiv = panel->mode_pwmdiv;
 847         lcd->pwmhi = panel->mode_pwmhi;
 848         lcd->outmask = panel->mode_outmask;
 849         lcd->fifoctrl = panel->mode_fifoctrl;
 850         au_sync();
 851
 852         /* fixme: Check window settings to make sure still valid
 853          * for new geometry */
 854 #if 0
 855         au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
 856         au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
 857         au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
 858         au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
 859 #endif
 860         lcd->winenable = winenable;
 861
 862         /*
 863          * Re-enable screen now that it is configured
 864          */
 865         lcd->screen |= LCD_SCREEN_SEN;
 866         au_sync();
 867
 868         /* Call init of panel */
 869         if (pd->panel_init)
 870                 pd->panel_init();
 871
 872         /* FIX!!!! not appropriate on panel change!!! Global setup/init */
 873         lcd->intenable = 0;
 874         lcd->intstatus = ~0;
 875         lcd->backcolor = win->mode_backcolor;
 876
 877         /* Setup Color Key - FIX!!! */
 878         lcd->colorkey = win->mode_colorkey;
 879         lcd->colorkeymsk = win->mode_colorkeymsk;
 880
 881         /* Setup HWCursor - FIX!!! Need to support this eventually */
 882         lcd->hwc.cursorctrl = 0;
 883         lcd->hwc.cursorpos = 0;
 884         lcd->hwc.cursorcolor0 = 0;
 885         lcd->hwc.cursorcolor1 = 0;
 886         lcd->hwc.cursorcolor2 = 0;
 887         lcd->hwc.cursorcolor3 = 0;
 888
 889
 890 #if 0
 891 #define D(X) printk("%25s: %08X\n", #X, X)
 892         D(lcd->screen);
 893         D(lcd->horztiming);
 894         D(lcd->verttiming);
 895         D(lcd->clkcontrol);
 896         D(lcd->pwmdiv);
 897         D(lcd->pwmhi);
 898         D(lcd->outmask);
 899         D(lcd->fifoctrl);
 900         D(lcd->window[0].winctrl0);
 901         D(lcd->window[0].winctrl1);
 902         D(lcd->window[0].winctrl2);
 903         D(lcd->window[0].winbuf0);
 904         D(lcd->window[0].winbuf1);
 905         D(lcd->window[0].winbufctrl);
 906         D(lcd->window[1].winctrl0);
 907         D(lcd->window[1].winctrl1);
 908         D(lcd->window[1].winctrl2);
 909         D(lcd->window[1].winbuf0);
 910         D(lcd->window[1].winbuf1);
 911         D(lcd->window[1].winbufctrl);
 912         D(lcd->window[2].winctrl0);
 913         D(lcd->window[2].winctrl1);
 914         D(lcd->window[2].winctrl2);
 915         D(lcd->window[2].winbuf0);
 916         D(lcd->window[2].winbuf1);
 917         D(lcd->window[2].winbufctrl);
 918         D(lcd->window[3].winctrl0);
 919         D(lcd->window[3].winctrl1);
 920         D(lcd->window[3].winctrl2);
 921         D(lcd->window[3].winbuf0);
 922         D(lcd->window[3].winbuf1);
 923         D(lcd->window[3].winbufctrl);
 924         D(lcd->winenable);
 925         D(lcd->intenable);
 926         D(lcd->intstatus);
 927         D(lcd->backcolor);
 928         D(lcd->winenable);
 929         D(lcd->colorkey);
 930     D(lcd->colorkeymsk);
 931         D(lcd->hwc.cursorctrl);
 932         D(lcd->hwc.cursorpos);
 933         D(lcd->hwc.cursorcolor0);
 934         D(lcd->hwc.cursorcolor1);
 935         D(lcd->hwc.cursorcolor2);
 936         D(lcd->hwc.cursorcolor3);
 937 #endif
 938 }
 939
 940 static void au1200_setmode(struct au1200fb_device *fbdev)
 941 {
 942         int plane = fbdev->plane;
 943         /* Window/plane setup */
 944         lcd->window[plane].winctrl1 = ( 0
 945                 | LCD_WINCTRL1_PRI_N(plane)
 946                 | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
 947                 ) ;
 948
 949         au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
 950
 951         lcd->window[plane].winctrl2 = ( 0
 952                 | LCD_WINCTRL2_CKMODE_00
 953                 | LCD_WINCTRL2_DBM
 954                 | LCD_WINCTRL2_BX_N(fbdev->fb_info->fix.line_length)
 955                 | LCD_WINCTRL2_SCX_1
 956                 | LCD_WINCTRL2_SCY_1
 957                 ) ;
 958         lcd->winenable |= win->w[plane].mode_winenable;
 959         au_sync();
 960 }
 961
 962
 963 /* Inline helpers */
 964
 965 /*#define panel_is_dual(panel)  ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
 966 /*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
 967
 968 #define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
 969
 970 /* Bitfields format supported by the controller. */
 971 static struct fb_bitfield rgb_bitfields[][4] = {
 972         /*     Red,        Green,        Blue,       Transp   */
 973         [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
 974                 { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 975
 976         [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
 977                 { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 978
 979         [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
 980                 { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
 981
 982         [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
 983                 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
 984
 985         [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
 986                 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
 987
 988         [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
 989                 { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
 990
 991         [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
 992                 { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
 993
 994         [LCD_WINCTRL1_FRM_24BPP >> 25] =
 995                 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
 996
 997         [LCD_WINCTRL1_FRM_32BPP >> 25] =
 998                 { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
 999 };
1000
1001 /*-------------------------------------------------------------------------*/
1002
1003 /* Helpers */
1004
1005 static void au1200fb_update_fbinfo(struct fb_info *fbi)
1006 {
1007         /* FIX!!!! This also needs to take the window pixel format into account!!! */
1008
1009         /* Update var-dependent FB info */
1010         if (panel_is_color(panel)) {
1011                 if (fbi->var.bits_per_pixel <= 8) {
1012                         /* palettized */
1013                         fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1014                         fbi->fix.line_length = fbi->var.xres_virtual /
1015                                 (8/fbi->var.bits_per_pixel);
1016                 } else {
1017                         /* non-palettized */
1018                         fbi->fix.visual = FB_VISUAL_TRUECOLOR;
1019                         fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
1020                 }
1021         } else {
1022                 /* mono FIX!!! mono 8 and 4 bits */
1023                 fbi->fix.visual = FB_VISUAL_MONO10;
1024                 fbi->fix.line_length = fbi->var.xres_virtual / 8;
1025         }
1026
1027         fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
1028         print_dbg("line length: %d\n", fbi->fix.line_length);
1029         print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
1030 }
1031
1032 /*-------------------------------------------------------------------------*/
1033
1034 /* AU1200 framebuffer driver */
1035
1036 /* fb_check_var
1037  * Validate var settings with hardware restrictions and modify it if necessary
1038  */
1039 static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
1040         struct fb_info *fbi)
1041 {
1042         struct au1200fb_device *fbdev = fbi->par;
1043         u32 pixclock;
1044         int screen_size, plane;
1045
1046         plane = fbdev->plane;
1047
1048         /* Make sure that the mode respect all LCD controller and
1049          * 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 pixel
1068          * 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 0
1080         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 #endif
1093         /* 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_par
1129  * Set hardware with var settings. This will enable the controller with a
1130  * specific mode, normally validated with the fb_check_var method
1131  */
1132 static 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_setcolreg
1143  * Set color in LCD palette.
1144  */
1145 static 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_blank
1198  * Blank the screen. Depending on the mode, the screen will be
1199  * activated with the backlight color, or desactivated
1200  */
1201 static 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_mmap
1232  * Map video memory in user space. We don't use the generic fb_mmap
1233  * method mainly to allow the use of the TLB streaming flag (CCA=6)
1234  */
1235 static 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_noncached(vma->vm_page_prot);
1240         pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */
1241
1242         return vm_iomap_memory(vma, fbdev->fb_phys, fbdev->fb_len);
1243 }
1244
1245 static 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 >= 30/1600
1258                 if (pdata->brightness < 30) {
1259                         pdata->brightness = 30;
1260                 }
1261                 divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1262                 hi1 = (lcd->pwmhi >> 16) + 1;
1263                 hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
1264                 lcd->pwmhi &= 0xFFFF;
1265                 lcd->pwmhi |= (hi1 << 16);
1266         }
1267
1268         if (pdata->flags & SCREEN_COLORKEY)
1269                 lcd->colorkey = pdata->colorkey;
1270
1271         if (pdata->flags & SCREEN_MASK)
1272                 lcd->colorkeymsk = pdata->mask;
1273         au_sync();
1274 }
1275
1276 static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
1277 {
1278         unsigned int hi1, divider;
1279
1280         pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
1281         pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
1282
1283         pdata->backcolor = lcd->backcolor;
1284         pdata->colorkey = lcd->colorkey;
1285         pdata->mask = lcd->colorkeymsk;
1286
1287         // brightness
1288         hi1 = (lcd->pwmhi >> 16) + 1;
1289         divider = (lcd->pwmdiv & 0x3FFFF) + 1;
1290         pdata->brightness = ((hi1 << 8) / divider) - 1;
1291         au_sync();
1292 }
1293
1294 static void set_window(unsigned int plane,
1295         struct au1200_lcd_window_regs_t *pdata)
1296 {
1297         unsigned int val, bpp;
1298
1299         /* Window control register 0 */
1300         if (pdata->flags & WIN_POSITION) {
1301                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
1302                                 LCD_WINCTRL0_OY);
1303                 val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
1304                 val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
1305                 lcd->window[plane].winctrl0 = val;
1306         }
1307         if (pdata->flags & WIN_ALPHA_COLOR) {
1308                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
1309                 val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
1310                 lcd->window[plane].winctrl0 = val;
1311         }
1312         if (pdata->flags & WIN_ALPHA_MODE) {
1313                 val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
1314                 val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
1315                 lcd->window[plane].winctrl0 = val;
1316         }
1317
1318         /* Window control register 1 */
1319         if (pdata->flags & WIN_PRIORITY) {
1320                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
1321                 val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
1322                 lcd->window[plane].winctrl1 = val;
1323         }
1324         if (pdata->flags & WIN_CHANNEL) {
1325                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
1326                 val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
1327                 lcd->window[plane].winctrl1 = val;
1328         }
1329         if (pdata->flags & WIN_BUFFER_FORMAT) {
1330                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
1331                 val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
1332                 lcd->window[plane].winctrl1 = val;
1333         }
1334         if (pdata->flags & WIN_COLOR_ORDER) {
1335                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
1336                 val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
1337                 lcd->window[plane].winctrl1 = val;
1338         }
1339         if (pdata->flags & WIN_PIXEL_ORDER) {
1340                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
1341                 val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
1342                 lcd->window[plane].winctrl1 = val;
1343         }
1344         if (pdata->flags & WIN_SIZE) {
1345                 val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
1346                                 LCD_WINCTRL1_SZY);
1347                 val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
1348                 val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
1349                 lcd->window[plane].winctrl1 = val;
1350                 /* program buffer line width */
1351                 bpp = winbpp(val) / 8;
1352                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
1353                 val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
1354                 lcd->window[plane].winctrl2 = val;
1355         }
1356
1357         /* Window control register 2 */
1358         if (pdata->flags & WIN_COLORKEY_MODE) {
1359                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
1360                 val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
1361                 lcd->window[plane].winctrl2 = val;
1362         }
1363         if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
1364                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
1365                 val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
1366                 lcd->window[plane].winctrl2 = val;
1367         }
1368         if (pdata->flags & WIN_RAM_ARRAY_MODE) {
1369                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
1370                 val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
1371                 lcd->window[plane].winctrl2 = val;
1372         }
1373
1374         /* Buffer line width programmed with WIN_SIZE */
1375
1376         if (pdata->flags & WIN_BUFFER_SCALE) {
1377                 val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
1378                                 LCD_WINCTRL2_SCY);
1379                 val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
1380                 val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
1381                 lcd->window[plane].winctrl2 = val;
1382         }
1383
1384         if (pdata->flags & WIN_ENABLE) {
1385                 val = lcd->winenable;
1386                 val &= ~(1<<plane);
1387                 val |= (pdata->enable & 1) << plane;
1388                 lcd->winenable = val;
1389         }
1390         au_sync();
1391 }
1392
1393 static void get_window(unsigned int plane,
1394         struct au1200_lcd_window_regs_t *pdata)
1395 {
1396         /* Window control register 0 */
1397         pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
1398         pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
1399         pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
1400         pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
1401
1402         /* Window control register 1 */
1403         pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
1404         pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
1405         pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
1406         pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
1407         pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
1408         pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
1409         pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
1410
1411         /* Window control register 2 */
1412         pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
1413         pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
1414         pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
1415
1416         pdata->enable = (lcd->winenable >> plane) & 1;
1417         au_sync();
1418 }
1419
1420 static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
1421                           unsigned long arg)
1422 {
1423         struct au1200fb_device *fbdev = info->par;
1424         int plane;
1425         int val;
1426
1427         plane = fbinfo2index(info);
1428         print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
1429
1430         if (cmd == AU1200_LCD_FB_IOCTL) {
1431                 struct au1200_lcd_iodata_t iodata;
1432
1433                 if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
1434                         return -EFAULT;
1435
1436                 print_dbg("FB IOCTL called\n");
1437
1438                 switch (iodata.subcmd) {
1439                 case AU1200_LCD_SET_SCREEN:
1440                         print_dbg("AU1200_LCD_SET_SCREEN\n");
1441                         set_global(cmd, &iodata.global);
1442                         break;
1443
1444                 case AU1200_LCD_GET_SCREEN:
1445                         print_dbg("AU1200_LCD_GET_SCREEN\n");
1446                         get_global(cmd, &iodata.global);
1447                         break;
1448
1449                 case AU1200_LCD_SET_WINDOW:
1450                         print_dbg("AU1200_LCD_SET_WINDOW\n");
1451                         set_window(plane, &iodata.window);
1452                         break;
1453
1454                 case AU1200_LCD_GET_WINDOW:
1455                         print_dbg("AU1200_LCD_GET_WINDOW\n");
1456                         get_window(plane, &iodata.window);
1457                         break;
1458
1459                 case AU1200_LCD_SET_PANEL:
1460                         print_dbg("AU1200_LCD_SET_PANEL\n");
1461                         if ((iodata.global.panel_choice >= 0) &&
1462                                         (iodata.global.panel_choice <
1463                                          NUM_PANELS))
1464                         {
1465                                 struct panel_settings *newpanel;
1466                                 panel_index = iodata.global.panel_choice;
1467                                 newpanel = &known_lcd_panels[panel_index];
1468                                 au1200_setpanel(newpanel, fbdev->pd);
1469                         }
1470                         break;
1471
1472                 case AU1200_LCD_GET_PANEL:
1473                         print_dbg("AU1200_LCD_GET_PANEL\n");
1474                         iodata.global.panel_choice = panel_index;
1475                         break;
1476
1477                 default:
1478                         return -EINVAL;
1479                 }
1480
1481                 val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
1482                 if (val) {
1483                         print_dbg("error: could not copy %d bytes\n", val);
1484                         return -EFAULT;
1485                 }
1486         }
1487
1488         return 0;
1489 }
1490
1491
1492 static struct fb_ops au1200fb_fb_ops = {
1493         .owner          = THIS_MODULE,
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_fillrect    = sys_fillrect,
1499         .fb_copyarea    = sys_copyarea,
1500         .fb_imageblit   = sys_imageblit,
1501         .fb_read        = fb_sys_read,
1502         .fb_write       = fb_sys_write,
1503         .fb_sync        = NULL,
1504         .fb_ioctl       = au1200fb_ioctl,
1505         .fb_mmap        = au1200fb_fb_mmap,
1506 };
1507
1508 /*-------------------------------------------------------------------------*/
1509
1510 static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
1511 {
1512         /* Nothing to do for now, just clear any pending interrupt */
1513         lcd->intstatus = lcd->intstatus;
1514         au_sync();
1515
1516         return IRQ_HANDLED;
1517 }
1518
1519 /*-------------------------------------------------------------------------*/
1520
1521 /* AU1200 LCD device probe helpers */
1522
1523 static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
1524 {
1525         struct fb_info *fbi = fbdev->fb_info;
1526         int bpp;
1527
1528         fbi->fbops = &au1200fb_fb_ops;
1529
1530         bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
1531
1532         /* Copy monitor specs from panel data */
1533         /* fixme: we're setting up LCD controller windows, so these dont give a
1534         damn as to what the monitor specs are (the panel itself does, but that
1535         isn't done here...so maybe need a generic catchall monitor setting??? */
1536         memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
1537
1538         /* We first try the user mode passed in argument. If that failed,
1539          * or if no one has been specified, we default to the first mode of the
1540          * panel list. Note that after this call, var data will be set */
1541         if (!fb_find_mode(&fbi->var,
1542                           fbi,
1543                           NULL, /* drv_info.opt_mode, */
1544                           fbi->monspecs.modedb,
1545                           fbi->monspecs.modedb_len,
1546                           fbi->monspecs.modedb,
1547                           bpp)) {
1548
1549                 print_err("Cannot find valid mode for panel %s", panel->name);
1550                 return -EFAULT;
1551         }
1552
1553         fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
1554         if (!fbi->pseudo_palette) {
1555                 return -ENOMEM;
1556         }
1557
1558         if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
1559                 print_err("Fail to allocate colormap (%d entries)",
1560                            AU1200_LCD_NBR_PALETTE_ENTRIES);
1561                 kfree(fbi->pseudo_palette);
1562                 return -EFAULT;
1563         }
1564
1565         strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
1566         fbi->fix.smem_start = fbdev->fb_phys;
1567         fbi->fix.smem_len = fbdev->fb_len;
1568         fbi->fix.type = FB_TYPE_PACKED_PIXELS;
1569         fbi->fix.xpanstep = 0;
1570         fbi->fix.ypanstep = 0;
1571         fbi->fix.mmio_start = 0;
1572         fbi->fix.mmio_len = 0;
1573         fbi->fix.accel = FB_ACCEL_NONE;
1574
1575         fbi->screen_base = (char __iomem *) fbdev->fb_mem;
1576
1577         au1200fb_update_fbinfo(fbi);
1578
1579         return 0;
1580 }
1581
1582 /*-------------------------------------------------------------------------*/
1583
1584
1585 static int au1200fb_setup(struct au1200fb_platdata *pd)
1586 {
1587         char *options = NULL;
1588         char *this_opt, *endptr;
1589         int num_panels = ARRAY_SIZE(known_lcd_panels);
1590         int panel_idx = -1;
1591
1592         fb_get_options(DRIVER_NAME, &options);
1593
1594         if (!options)
1595                 goto out;
1596
1597         while ((this_opt = strsep(&options, ",")) != NULL) {
1598                 /* Panel option - can be panel name,
1599                  * "bs" for board-switch, or number/index */
1600                 if (!strncmp(this_opt, "panel:", 6)) {
1601                         int i;
1602                         long int li;
1603                         char *endptr;
1604                         this_opt += 6;
1605                         /* First check for index, which allows
1606                          * to short circuit this mess */
1607                         li = simple_strtol(this_opt, &endptr, 0);
1608                         if (*endptr == '\0')
1609                                 panel_idx = (int)li;
1610                         else if (strcmp(this_opt, "bs") == 0)
1611                                 panel_idx = pd->panel_index();
1612                         else {
1613                                 for (i = 0; i < num_panels; i++) {
1614                                         if (!strcmp(this_opt,
1615                                                     known_lcd_panels[i].name)) {
1616                                                 panel_idx = i;
1617                                                 break;
1618                                         }
1619                                 }
1620                         }
1621                         if ((panel_idx < 0) || (panel_idx >= num_panels))
1622                                 print_warn("Panel %s not supported!", this_opt);
1623                         else
1624                                 panel_index = panel_idx;
1625
1626                 } else if (strncmp(this_opt, "nohwcursor", 10) == 0)
1627                         nohwcursor = 1;
1628                 else if (strncmp(this_opt, "devices:", 8) == 0) {
1629                         this_opt += 8;
1630                         device_count = simple_strtol(this_opt, &endptr, 0);
1631                         if ((device_count < 0) ||
1632                             (device_count > MAX_DEVICE_COUNT))
1633                                 device_count = MAX_DEVICE_COUNT;
1634                 } else if (strncmp(this_opt, "wincfg:", 7) == 0) {
1635                         this_opt += 7;
1636                         window_index = simple_strtol(this_opt, &endptr, 0);
1637                         if ((window_index < 0) ||
1638                             (window_index >= ARRAY_SIZE(windows)))
1639                                 window_index = DEFAULT_WINDOW_INDEX;
1640                 } else if (strncmp(this_opt, "off", 3) == 0)
1641                         return 1;
1642                 else
1643                         print_warn("Unsupported option \"%s\"", this_opt);
1644         }
1645
1646 out:
1647         return 0;
1648 }
1649
1650 /* AU1200 LCD controller device driver */
1651 static int au1200fb_drv_probe(struct platform_device *dev)
1652 {
1653         struct au1200fb_device *fbdev;
1654         struct au1200fb_platdata *pd;
1655         struct fb_info *fbi = NULL;
1656         unsigned long page;
1657         int bpp, plane, ret, irq;
1658
1659         print_info("" DRIVER_DESC "");
1660
1661         pd = dev->dev.platform_data;
1662         if (!pd)
1663                 return -ENODEV;
1664
1665         /* Setup driver with options */
1666         if (au1200fb_setup(pd))
1667                 return -ENODEV;
1668
1669         /* Point to the panel selected */
1670         panel = &known_lcd_panels[panel_index];
1671         win = &windows[window_index];
1672
1673         printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
1674         printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
1675
1676         /* shut gcc up */
1677         ret = 0;
1678         fbdev = NULL;
1679
1680         for (plane = 0; plane < device_count; ++plane) {
1681                 bpp = winbpp(win->w[plane].mode_winctrl1);
1682                 if (win->w[plane].xres == 0)
1683                         win->w[plane].xres = panel->Xres;
1684                 if (win->w[plane].yres == 0)
1685                         win->w[plane].yres = panel->Yres;
1686
1687                 fbi = framebuffer_alloc(sizeof(struct au1200fb_device),
1688                                         &dev->dev);
1689                 if (!fbi)
1690                         goto failed;
1691
1692                 _au1200fb_infos[plane] = fbi;
1693                 fbdev = fbi->par;
1694                 fbdev->fb_info = fbi;
1695                 fbdev->pd = pd;
1696
1697                 fbdev->plane = plane;
1698
1699                 /* Allocate the framebuffer to the maximum screen size */
1700                 fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
1701
1702                 fbdev->fb_mem = dmam_alloc_noncoherent(&dev->dev,
1703                                 PAGE_ALIGN(fbdev->fb_len),
1704                                 &fbdev->fb_phys, GFP_KERNEL);
1705                 if (!fbdev->fb_mem) {
1706                         print_err("fail to allocate frambuffer (size: %dK))",
1707                                   fbdev->fb_len / 1024);
1708                         return -ENOMEM;
1709                 }
1710
1711                 /*
1712                  * Set page reserved so that mmap will work. This is necessary
1713                  * since we'll be remapping normal memory.
1714                  */
1715                 for (page = (unsigned long)fbdev->fb_phys;
1716                      page < PAGE_ALIGN((unsigned long)fbdev->fb_phys +
1717                              fbdev->fb_len);
1718                      page += PAGE_SIZE) {
1719                         SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */
1720                 }
1721                 print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
1722                 print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
1723
1724                 /* Init FB data */
1725                 if ((ret = au1200fb_init_fbinfo(fbdev)) < 0)
1726                         goto failed;
1727
1728                 /* Register new framebuffer */
1729                 ret = register_framebuffer(fbi);
1730                 if (ret < 0) {
1731                         print_err("cannot register new framebuffer");
1732                         goto failed;
1733                 }
1734
1735                 au1200fb_fb_set_par(fbi);
1736
1737 #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
1738                 if (plane == 0)
1739                         if (fb_prepare_logo(fbi, FB_ROTATE_UR)) {
1740                                 /* Start display and show logo on boot */
1741                                 fb_set_cmap(&fbi->cmap, fbi);
1742                                 fb_show_logo(fbi, FB_ROTATE_UR);
1743                         }
1744 #endif
1745         }
1746
1747         /* Now hook interrupt too */
1748         irq = platform_get_irq(dev, 0);
1749         ret = request_irq(irq, au1200fb_handle_irq,
1750                           IRQF_SHARED, "lcd", (void *)dev);
1751         if (ret) {
1752                 print_err("fail to request interrupt line %d (err: %d)",
1753                           irq, ret);
1754                 goto failed;
1755         }
1756
1757         platform_set_drvdata(dev, pd);
1758
1759         /* Kickstart the panel */
1760         au1200_setpanel(panel, pd);
1761
1762         return 0;
1763
1764 failed:
1765         /* NOTE: This only does the current plane/window that failed; others are still active */
1766         if (fbi) {
1767                 if (fbi->cmap.len != 0)
1768                         fb_dealloc_cmap(&fbi->cmap);
1769                 kfree(fbi->pseudo_palette);
1770         }
1771         if (plane == 0)
1772                 free_irq(AU1200_LCD_INT, (void*)dev);
1773         return ret;
1774 }
1775
1776 static int au1200fb_drv_remove(struct platform_device *dev)
1777 {
1778         struct au1200fb_platdata *pd = platform_get_drvdata(dev);
1779         struct au1200fb_device *fbdev;
1780         struct fb_info *fbi;
1781         int plane;
1782
1783         /* Turn off the panel */
1784         au1200_setpanel(NULL, pd);
1785
1786         for (plane = 0; plane < device_count; ++plane)  {
1787                 fbi = _au1200fb_infos[plane];
1788                 fbdev = fbi->par;
1789
1790                 /* Clean up all probe data */
1791                 unregister_framebuffer(fbi);
1792                 if (fbi->cmap.len != 0)
1793                         fb_dealloc_cmap(&fbi->cmap);
1794                 kfree(fbi->pseudo_palette);
1795
1796                 framebuffer_release(fbi);
1797                 _au1200fb_infos[plane] = NULL;
1798         }
1799
1800         free_irq(platform_get_irq(dev, 0), (void *)dev);
1801
1802         return 0;
1803 }
1804
1805 #ifdef CONFIG_PM
1806 static int au1200fb_drv_suspend(struct device *dev)
1807 {
1808         struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1809         au1200_setpanel(NULL, pd);
1810
1811         lcd->outmask = 0;
1812         au_sync();
1813
1814         return 0;
1815 }
1816
1817 static int au1200fb_drv_resume(struct device *dev)
1818 {
1819         struct au1200fb_platdata *pd = dev_get_drvdata(dev);
1820         struct fb_info *fbi;
1821         int i;
1822
1823         /* Kickstart the panel */
1824         au1200_setpanel(panel, pd);
1825
1826         for (i = 0; i < device_count; i++) {
1827                 fbi = _au1200fb_infos[i];
1828                 au1200fb_fb_set_par(fbi);
1829         }
1830
1831         return 0;
1832 }
1833
1834 static const struct dev_pm_ops au1200fb_pmops = {
1835         .suspend        = au1200fb_drv_suspend,
1836         .resume         = au1200fb_drv_resume,
1837         .freeze         = au1200fb_drv_suspend,
1838         .thaw           = au1200fb_drv_resume,
1839 };
1840
1841 #define AU1200FB_PMOPS  (&au1200fb_pmops)
1842
1843 #else
1844 #define AU1200FB_PMOPS  NULL
1845 #endif /* CONFIG_PM */
1846
1847 static struct platform_driver au1200fb_driver = {
1848         .driver = {
1849                 .name   = "au1200-lcd",
1850                 .owner  = THIS_MODULE,
1851                 .pm     = AU1200FB_PMOPS,
1852         },
1853         .probe          = au1200fb_drv_probe,
1854         .remove         = au1200fb_drv_remove,
1855 };
1856 module_platform_driver(au1200fb_driver);
1857
1858 MODULE_DESCRIPTION(DRIVER_DESC);
1859 MODULE_LICENSE("GPL");