drivers/video/s3c-fb.c

   1 /* linux/drivers/video/s3c-fb.c
   2  *
   3  * Copyright 2008 Openmoko Inc.
   4  * Copyright 2008-2010 Simtec Electronics
   5  *      Ben Dooks <ben@simtec.co.uk>
   6  *      http://armlinux.simtec.co.uk/
   7  *
   8  * Samsung SoC Framebuffer driver
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software FoundatIon.
  13 */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/dma-mapping.h>
  19 #include <linux/slab.h>
  20 #include <linux/init.h>
  21 #include <linux/clk.h>
  22 #include <linux/fb.h>
  23 #include <linux/io.h>
  24
  25 #include <mach/map.h>
  26 #include <plat/regs-fb-v4.h>
  27 #include <plat/fb.h>
  28
  29 /* This driver will export a number of framebuffer interfaces depending
  30  * on the configuration passed in via the platform data. Each fb instance
  31  * maps to a hardware window. Currently there is no support for runtime
  32  * setting of the alpha-blending functions that each window has, so only
  33  * window 0 is actually useful.
  34  *
  35  * Window 0 is treated specially, it is used for the basis of the LCD
  36  * output timings and as the control for the output power-down state.
  37 */
  38
  39 /* note, the previous use of <mach/regs-fb.h> to get platform specific data
  40  * has been replaced by using the platform device name to pick the correct
  41  * configuration data for the system.
  42 */
  43
  44 #ifdef CONFIG_FB_S3C_DEBUG_REGWRITE
  45 #undef writel
  46 #define writel(v, r) do { \
  47         printk(KERN_DEBUG "%s: %08x => %p\n", __func__, (unsigned int)v, r); \
  48         __raw_writel(v, r); } while(0)
  49 #endif /* FB_S3C_DEBUG_REGWRITE */
  50
  51 struct s3c_fb;
  52
  53 #define VALID_BPP(x) (1 << ((x) - 1))
  54
  55 #define OSD_BASE(win, variant) ((variant).osd + ((win) * (variant).osd_stride))
  56 #define VIDOSD_A(win, variant) (OSD_BASE(win, variant) + 0x00)
  57 #define VIDOSD_B(win, variant) (OSD_BASE(win, variant) + 0x04)
  58 #define VIDOSD_C(win, variant) (OSD_BASE(win, variant) + 0x08)
  59 #define VIDOSD_D(win, variant) (OSD_BASE(win, variant) + 0x0C)
  60
  61 /**
  62  * struct s3c_fb_variant - fb variant information
  63  * @is_2443: Set if S3C2443/S3C2416 style hardware.
  64  * @nr_windows: The number of windows.
  65  * @vidtcon: The base for the VIDTCONx registers
  66  * @wincon: The base for the WINxCON registers.
  67  * @winmap: The base for the WINxMAP registers.
  68  * @keycon: The abse for the WxKEYCON registers.
  69  * @buf_start: Offset of buffer start registers.
  70  * @buf_size: Offset of buffer size registers.
  71  * @buf_end: Offset of buffer end registers.
  72  * @osd: The base for the OSD registers.
  73  * @palette: Address of palette memory, or 0 if none.
  74  * @has_prtcon: Set if has PRTCON register.
  75  */
  76 struct s3c_fb_variant {
  77         unsigned int    is_2443:1;
  78         unsigned short  nr_windows;
  79         unsigned short  vidtcon;
  80         unsigned short  wincon;
  81         unsigned short  winmap;
  82         unsigned short  keycon;
  83         unsigned short  buf_start;
  84         unsigned short  buf_end;
  85         unsigned short  buf_size;
  86         unsigned short  osd;
  87         unsigned short  osd_stride;
  88         unsigned short  palette[S3C_FB_MAX_WIN];
  89
  90         unsigned int    has_prtcon:1;
  91 };
  92
  93 /**
  94  * struct s3c_fb_win_variant
  95  * @has_osd_c: Set if has OSD C register.
  96  * @has_osd_d: Set if has OSD D register.
  97  * @palette_sz: Size of palette in entries.
  98  * @palette_16bpp: Set if palette is 16bits wide.
  99  * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel.
 100  *
 101  * valid_bpp bit x is set if (x+1)BPP is supported.
 102  */
 103 struct s3c_fb_win_variant {
 104         unsigned int    has_osd_c:1;
 105         unsigned int    has_osd_d:1;
 106         unsigned int    palette_16bpp:1;
 107         unsigned short  palette_sz;
 108         u32             valid_bpp;
 109 };
 110
 111 /**
 112  * struct s3c_fb_driverdata - per-device type driver data for init time.
 113  * @variant: The variant information for this driver.
 114  * @win: The window information for each window.
 115  */
 116 struct s3c_fb_driverdata {
 117         struct s3c_fb_variant   variant;
 118         struct s3c_fb_win_variant *win[S3C_FB_MAX_WIN];
 119 };
 120
 121 /**
 122  * struct s3c_fb_palette - palette information
 123  * @r: Red bitfield.
 124  * @g: Green bitfield.
 125  * @b: Blue bitfield.
 126  * @a: Alpha bitfield.
 127  */
 128 struct s3c_fb_palette {
 129         struct fb_bitfield      r;
 130         struct fb_bitfield      g;
 131         struct fb_bitfield      b;
 132         struct fb_bitfield      a;
 133 };
 134
 135 /**
 136  * struct s3c_fb_win - per window private data for each framebuffer.
 137  * @windata: The platform data supplied for the window configuration.
 138  * @parent: The hardware that this window is part of.
 139  * @fbinfo: Pointer pack to the framebuffer info for this window.
 140  * @varint: The variant information for this window.
 141  * @palette_buffer: Buffer/cache to hold palette entries.
 142  * @pseudo_palette: For use in TRUECOLOUR modes for entries 0..15/
 143  * @index: The window number of this window.
 144  * @palette: The bitfields for changing r/g/b into a hardware palette entry.
 145  */
 146 struct s3c_fb_win {
 147         struct s3c_fb_pd_win    *windata;
 148         struct s3c_fb           *parent;
 149         struct fb_info          *fbinfo;
 150         struct s3c_fb_palette    palette;
 151         struct s3c_fb_win_variant variant;
 152
 153         u32                     *palette_buffer;
 154         u32                      pseudo_palette[16];
 155         unsigned int             index;
 156 };
 157
 158 /**
 159  * struct s3c_fb - overall hardware state of the hardware
 160  * @dev: The device that we bound to, for printing, etc.
 161  * @regs_res: The resource we claimed for the IO registers.
 162  * @bus_clk: The clk (hclk) feeding our interface and possibly pixclk.
 163  * @regs: The mapped hardware registers.
 164  * @variant: Variant information for this hardware.
 165  * @enabled: A bitmask of enabled hardware windows.
 166  * @pdata: The platform configuration data passed with the device.
 167  * @windows: The hardware windows that have been claimed.
 168  */
 169 struct s3c_fb {
 170         struct device           *dev;
 171         struct resource         *regs_res;
 172         struct clk              *bus_clk;
 173         void __iomem            *regs;
 174         struct s3c_fb_variant    variant;
 175
 176         unsigned char            enabled;
 177
 178         struct s3c_fb_platdata  *pdata;
 179         struct s3c_fb_win       *windows[S3C_FB_MAX_WIN];
 180 };
 181
 182 /**
 183  * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode.
 184  * @win: The device window.
 185  * @bpp: The bit depth.
 186  */
 187 static bool s3c_fb_validate_win_bpp(struct s3c_fb_win *win, unsigned int bpp)
 188 {
 189         return win->variant.valid_bpp & VALID_BPP(bpp);
 190 }
 191
 192 /**
 193  * s3c_fb_check_var() - framebuffer layer request to verify a given mode.
 194  * @var: The screen information to verify.
 195  * @info: The framebuffer device.
 196  *
 197  * Framebuffer layer call to verify the given information and allow us to
 198  * update various information depending on the hardware capabilities.
 199  */
 200 static int s3c_fb_check_var(struct fb_var_screeninfo *var,
 201                             struct fb_info *info)
 202 {
 203         struct s3c_fb_win *win = info->par;
 204         struct s3c_fb_pd_win *windata = win->windata;
 205         struct s3c_fb *sfb = win->parent;
 206
 207         dev_dbg(sfb->dev, "checking parameters\n");
 208
 209         var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres);
 210         var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres);
 211
 212         if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) {
 213                 dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n",
 214                         win->index, var->bits_per_pixel);
 215                 return -EINVAL;
 216         }
 217
 218         /* always ensure these are zero, for drop through cases below */
 219         var->transp.offset = 0;
 220         var->transp.length = 0;
 221
 222         switch (var->bits_per_pixel) {
 223         case 1:
 224         case 2:
 225         case 4:
 226         case 8:
 227                 if (sfb->variant.palette[win->index] != 0) {
 228                         /* non palletised, A:1,R:2,G:3,B:2 mode */
 229                         var->red.offset         = 4;
 230                         var->green.offset       = 2;
 231                         var->blue.offset        = 0;
 232                         var->red.length         = 5;
 233                         var->green.length       = 3;
 234                         var->blue.length        = 2;
 235                         var->transp.offset      = 7;
 236                         var->transp.length      = 1;
 237                 } else {
 238                         var->red.offset = 0;
 239                         var->red.length = var->bits_per_pixel;
 240                         var->green      = var->red;
 241                         var->blue       = var->red;
 242                 }
 243                 break;
 244
 245         case 19:
 246                 /* 666 with one bit alpha/transparency */
 247                 var->transp.offset      = 18;
 248                 var->transp.length      = 1;
 249         case 18:
 250                 var->bits_per_pixel     = 32;
 251
 252                 /* 666 format */
 253                 var->red.offset         = 12;
 254                 var->green.offset       = 6;
 255                 var->blue.offset        = 0;
 256                 var->red.length         = 6;
 257                 var->green.length       = 6;
 258                 var->blue.length        = 6;
 259                 break;
 260
 261         case 16:
 262                 /* 16 bpp, 565 format */
 263                 var->red.offset         = 11;
 264                 var->green.offset       = 5;
 265                 var->blue.offset        = 0;
 266                 var->red.length         = 5;
 267                 var->green.length       = 6;
 268                 var->blue.length        = 5;
 269                 break;
 270
 271         case 28:
 272         case 25:
 273                 var->transp.length      = var->bits_per_pixel - 24;
 274                 var->transp.offset      = 24;
 275                 /* drop through */
 276         case 24:
 277                 /* our 24bpp is unpacked, so 32bpp */
 278                 var->bits_per_pixel     = 32;
 279         case 32:
 280                 var->red.offset         = 16;
 281                 var->red.length         = 8;
 282                 var->green.offset       = 8;
 283                 var->green.length       = 8;
 284                 var->blue.offset        = 0;
 285                 var->blue.length        = 8;
 286                 break;
 287
 288         default:
 289                 dev_err(sfb->dev, "invalid bpp\n");
 290         }
 291
 292         dev_dbg(sfb->dev, "%s: verified parameters\n", __func__);
 293         return 0;
 294 }
 295
 296 /**
 297  * s3c_fb_calc_pixclk() - calculate the divider to create the pixel clock.
 298  * @sfb: The hardware state.
 299  * @pixclock: The pixel clock wanted, in picoseconds.
 300  *
 301  * Given the specified pixel clock, work out the necessary divider to get
 302  * close to the output frequency.
 303  */
 304 static int s3c_fb_calc_pixclk(struct s3c_fb *sfb, unsigned int pixclk)
 305 {
 306         unsigned long clk = clk_get_rate(sfb->bus_clk);
 307         unsigned long long tmp;
 308         unsigned int result;
 309
 310         tmp = (unsigned long long)clk;
 311         tmp *= pixclk;
 312
 313         do_div(tmp, 1000000000UL);
 314         result = (unsigned int)tmp / 1000;
 315
 316         dev_dbg(sfb->dev, "pixclk=%u, clk=%lu, div=%d (%lu)\n",
 317                 pixclk, clk, result, clk / result);
 318
 319         return result;
 320 }
 321
 322 /**
 323  * s3c_fb_align_word() - align pixel count to word boundary
 324  * @bpp: The number of bits per pixel
 325  * @pix: The value to be aligned.
 326  *
 327  * Align the given pixel count so that it will start on an 32bit word
 328  * boundary.
 329  */
 330 static int s3c_fb_align_word(unsigned int bpp, unsigned int pix)
 331 {
 332         int pix_per_word;
 333
 334         if (bpp > 16)
 335                 return pix;
 336
 337         pix_per_word = (8 * 32) / bpp;
 338         return ALIGN(pix, pix_per_word);
 339 }
 340
 341 /**
 342  * s3c_fb_set_par() - framebuffer request to set new framebuffer state.
 343  * @info: The framebuffer to change.
 344  *
 345  * Framebuffer layer request to set a new mode for the specified framebuffer
 346  */
 347 static int s3c_fb_set_par(struct fb_info *info)
 348 {
 349         struct fb_var_screeninfo *var = &info->var;
 350         struct s3c_fb_win *win = info->par;
 351         struct s3c_fb *sfb = win->parent;
 352         void __iomem *regs = sfb->regs;
 353         void __iomem *buf = regs;
 354         int win_no = win->index;
 355         u32 osdc_data = 0;
 356         u32 data;
 357         u32 pagewidth;
 358         int clkdiv;
 359
 360         dev_dbg(sfb->dev, "setting framebuffer parameters\n");
 361
 362         switch (var->bits_per_pixel) {
 363         case 32:
 364         case 24:
 365         case 16:
 366         case 12:
 367                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 368                 break;
 369         case 8:
 370                 if (win->variant.palette_sz >= 256)
 371                         info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 372                 else
 373                         info->fix.visual = FB_VISUAL_TRUECOLOR;
 374                 break;
 375         case 1:
 376                 info->fix.visual = FB_VISUAL_MONO01;
 377                 break;
 378         default:
 379                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 380                 break;
 381         }
 382
 383         info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8;
 384
 385         info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0;
 386         info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0;
 387
 388         /* disable the window whilst we update it */
 389         writel(0, regs + WINCON(win_no));
 390
 391         /* use platform specified window as the basis for the lcd timings */
 392
 393         if (win_no == sfb->pdata->default_win) {
 394                 clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock);
 395
 396                 data = sfb->pdata->vidcon0;
 397                 data &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR);
 398
 399                 if (clkdiv > 1)
 400                         data |= VIDCON0_CLKVAL_F(clkdiv-1) | VIDCON0_CLKDIR;
 401                 else
 402                         data &= ~VIDCON0_CLKDIR;        /* 1:1 clock */
 403
 404                 /* write the timing data to the panel */
 405
 406                 if (sfb->variant.is_2443)
 407                         data |= (1 << 5);
 408
 409                 data |= VIDCON0_ENVID | VIDCON0_ENVID_F;
 410                 writel(data, regs + VIDCON0);
 411
 412                 data = VIDTCON0_VBPD(var->upper_margin - 1) |
 413                        VIDTCON0_VFPD(var->lower_margin - 1) |
 414                        VIDTCON0_VSPW(var->vsync_len - 1);
 415
 416                 writel(data, regs + sfb->variant.vidtcon);
 417
 418                 data = VIDTCON1_HBPD(var->left_margin - 1) |
 419                        VIDTCON1_HFPD(var->right_margin - 1) |
 420                        VIDTCON1_HSPW(var->hsync_len - 1);
 421
 422                 /* VIDTCON1 */
 423                 writel(data, regs + sfb->variant.vidtcon + 4);
 424
 425                 data = VIDTCON2_LINEVAL(var->yres - 1) |
 426                        VIDTCON2_HOZVAL(var->xres - 1);
 427                 writel(data, regs +sfb->variant.vidtcon + 8 );
 428         }
 429
 430         /* write the buffer address */
 431
 432         /* start and end registers stride is 8 */
 433         buf = regs + win_no * 8;
 434
 435         writel(info->fix.smem_start, buf + sfb->variant.buf_start);
 436
 437         data = info->fix.smem_start + info->fix.line_length * var->yres;
 438         writel(data, buf + sfb->variant.buf_end);
 439
 440         pagewidth = (var->xres * var->bits_per_pixel) >> 3;
 441         data = VIDW_BUF_SIZE_OFFSET(info->fix.line_length - pagewidth) |
 442                VIDW_BUF_SIZE_PAGEWIDTH(pagewidth);
 443         writel(data, regs + sfb->variant.buf_size + (win_no * 4));
 444
 445         /* write 'OSD' registers to control position of framebuffer */
 446
 447         data = VIDOSDxA_TOPLEFT_X(0) | VIDOSDxA_TOPLEFT_Y(0);
 448         writel(data, regs + VIDOSD_A(win_no, sfb->variant));
 449
 450         data = VIDOSDxB_BOTRIGHT_X(s3c_fb_align_word(var->bits_per_pixel,
 451                                                      var->xres - 1)) |
 452                VIDOSDxB_BOTRIGHT_Y(var->yres - 1);
 453
 454         writel(data, regs + VIDOSD_B(win_no, sfb->variant));
 455
 456         data = var->xres * var->yres;
 457
 458         osdc_data = VIDISD14C_ALPHA1_R(0xf) |
 459                 VIDISD14C_ALPHA1_G(0xf) |
 460                 VIDISD14C_ALPHA1_B(0xf);
 461
 462         if (win->variant.has_osd_d) {
 463                 writel(data, regs + VIDOSD_D(win_no, sfb->variant));
 464                 writel(osdc_data, regs + VIDOSD_C(win_no, sfb->variant));
 465         } else
 466                 writel(data, regs + VIDOSD_C(win_no, sfb->variant));
 467
 468         data = WINCONx_ENWIN;
 469
 470         /* note, since we have to round up the bits-per-pixel, we end up
 471          * relying on the bitfield information for r/g/b/a to work out
 472          * exactly which mode of operation is intended. */
 473
 474         switch (var->bits_per_pixel) {
 475         case 1:
 476                 data |= WINCON0_BPPMODE_1BPP;
 477                 data |= WINCONx_BITSWP;
 478                 data |= WINCONx_BURSTLEN_4WORD;
 479                 break;
 480         case 2:
 481                 data |= WINCON0_BPPMODE_2BPP;
 482                 data |= WINCONx_BITSWP;
 483                 data |= WINCONx_BURSTLEN_8WORD;
 484                 break;
 485         case 4:
 486                 data |= WINCON0_BPPMODE_4BPP;
 487                 data |= WINCONx_BITSWP;
 488                 data |= WINCONx_BURSTLEN_8WORD;
 489                 break;
 490         case 8:
 491                 if (var->transp.length != 0)
 492                         data |= WINCON1_BPPMODE_8BPP_1232;
 493                 else
 494                         data |= WINCON0_BPPMODE_8BPP_PALETTE;
 495                 data |= WINCONx_BURSTLEN_8WORD;
 496                 data |= WINCONx_BYTSWP;
 497                 break;
 498         case 16:
 499                 if (var->transp.length != 0)
 500                         data |= WINCON1_BPPMODE_16BPP_A1555;
 501                 else
 502                         data |= WINCON0_BPPMODE_16BPP_565;
 503                 data |= WINCONx_HAWSWP;
 504                 data |= WINCONx_BURSTLEN_16WORD;
 505                 break;
 506         case 24:
 507         case 32:
 508                 if (var->red.length == 6) {
 509                         if (var->transp.length != 0)
 510                                 data |= WINCON1_BPPMODE_19BPP_A1666;
 511                         else
 512                                 data |= WINCON1_BPPMODE_18BPP_666;
 513                 } else if (var->transp.length == 1)
 514                         data |= WINCON1_BPPMODE_25BPP_A1888
 515                                 | WINCON1_BLD_PIX;
 516                 else if (var->transp.length == 4)
 517                         data |= WINCON1_BPPMODE_28BPP_A4888
 518                                 | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL;
 519                 else
 520                         data |= WINCON0_BPPMODE_24BPP_888;
 521
 522                 data |= WINCONx_WSWP;
 523                 data |= WINCONx_BURSTLEN_16WORD;
 524                 break;
 525         }
 526
 527         /* Enable the colour keying for the window below this one */
 528         if (win_no > 0) {
 529                 u32 keycon0_data = 0, keycon1_data = 0;
 530                 void __iomem *keycon = regs + sfb->variant.keycon;
 531
 532                 keycon0_data = ~(WxKEYCON0_KEYBL_EN |
 533                                 WxKEYCON0_KEYEN_F |
 534                                 WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0);
 535
 536                 keycon1_data = WxKEYCON1_COLVAL(0xffffff);
 537
 538                 keycon += (win_no - 1) * 8;
 539
 540                 writel(keycon0_data, keycon + WKEYCON0);
 541                 writel(keycon1_data, keycon + WKEYCON1);
 542         }
 543
 544         writel(data, regs + sfb->variant.wincon + (win_no * 4));
 545         writel(0x0, regs + sfb->variant.winmap + (win_no * 4));
 546
 547         return 0;
 548 }
 549
 550 /**
 551  * s3c_fb_update_palette() - set or schedule a palette update.
 552  * @sfb: The hardware information.
 553  * @win: The window being updated.
 554  * @reg: The palette index being changed.
 555  * @value: The computed palette value.
 556  *
 557  * Change the value of a palette register, either by directly writing to
 558  * the palette (this requires the palette RAM to be disconnected from the
 559  * hardware whilst this is in progress) or schedule the update for later.
 560  *
 561  * At the moment, since we have no VSYNC interrupt support, we simply set
 562  * the palette entry directly.
 563  */
 564 static void s3c_fb_update_palette(struct s3c_fb *sfb,
 565                                   struct s3c_fb_win *win,
 566                                   unsigned int reg,
 567                                   u32 value)
 568 {
 569         void __iomem *palreg;
 570         u32 palcon;
 571
 572         palreg = sfb->regs + sfb->variant.palette[win->index];
 573
 574         dev_dbg(sfb->dev, "%s: win %d, reg %d (%p): %08x\n",
 575                 __func__, win->index, reg, palreg, value);
 576
 577         win->palette_buffer[reg] = value;
 578
 579         palcon = readl(sfb->regs + WPALCON);
 580         writel(palcon | WPALCON_PAL_UPDATE, sfb->regs + WPALCON);
 581
 582         if (win->variant.palette_16bpp)
 583                 writew(value, palreg + (reg * 2));
 584         else
 585                 writel(value, palreg + (reg * 4));
 586
 587         writel(palcon, sfb->regs + WPALCON);
 588 }
 589
 590 static inline unsigned int chan_to_field(unsigned int chan,
 591                                          struct fb_bitfield *bf)
 592 {
 593         chan &= 0xffff;
 594         chan >>= 16 - bf->length;
 595         return chan << bf->offset;
 596 }
 597
 598 /**
 599  * s3c_fb_setcolreg() - framebuffer layer request to change palette.
 600  * @regno: The palette index to change.
 601  * @red: The red field for the palette data.
 602  * @green: The green field for the palette data.
 603  * @blue: The blue field for the palette data.
 604  * @trans: The transparency (alpha) field for the palette data.
 605  * @info: The framebuffer being changed.
 606  */
 607 static int s3c_fb_setcolreg(unsigned regno,
 608                             unsigned red, unsigned green, unsigned blue,
 609                             unsigned transp, struct fb_info *info)
 610 {
 611         struct s3c_fb_win *win = info->par;
 612         struct s3c_fb *sfb = win->parent;
 613         unsigned int val;
 614
 615         dev_dbg(sfb->dev, "%s: win %d: %d => rgb=%d/%d/%d\n",
 616                 __func__, win->index, regno, red, green, blue);
 617
 618         switch (info->fix.visual) {
 619         case FB_VISUAL_TRUECOLOR:
 620                 /* true-colour, use pseudo-palette */
 621
 622                 if (regno < 16) {
 623                         u32 *pal = info->pseudo_palette;
 624
 625                         val  = chan_to_field(red,   &info->var.red);
 626                         val |= chan_to_field(green, &info->var.green);
 627                         val |= chan_to_field(blue,  &info->var.blue);
 628
 629                         pal[regno] = val;
 630                 }
 631                 break;
 632
 633         case FB_VISUAL_PSEUDOCOLOR:
 634                 if (regno < win->variant.palette_sz) {
 635                         val  = chan_to_field(red, &win->palette.r);
 636                         val |= chan_to_field(green, &win->palette.g);
 637                         val |= chan_to_field(blue, &win->palette.b);
 638
 639                         s3c_fb_update_palette(sfb, win, regno, val);
 640                 }
 641
 642                 break;
 643
 644         default:
 645                 return 1;       /* unknown type */
 646         }
 647
 648         return 0;
 649 }
 650
 651 /**
 652  * s3c_fb_enable() - Set the state of the main LCD output
 653  * @sfb: The main framebuffer state.
 654  * @enable: The state to set.
 655  */
 656 static void s3c_fb_enable(struct s3c_fb *sfb, int enable)
 657 {
 658         u32 vidcon0 = readl(sfb->regs + VIDCON0);
 659
 660         if (enable)
 661                 vidcon0 |= VIDCON0_ENVID | VIDCON0_ENVID_F;
 662         else {
 663                 /* see the note in the framebuffer datasheet about
 664                  * why you cannot take both of these bits down at the
 665                  * same time. */
 666
 667                 if (!(vidcon0 & VIDCON0_ENVID))
 668                         return;
 669
 670                 vidcon0 |= VIDCON0_ENVID;
 671                 vidcon0 &= ~VIDCON0_ENVID_F;
 672         }
 673
 674         writel(vidcon0, sfb->regs + VIDCON0);
 675 }
 676
 677 /**
 678  * s3c_fb_blank() - blank or unblank the given window
 679  * @blank_mode: The blank state from FB_BLANK_*
 680  * @info: The framebuffer to blank.
 681  *
 682  * Framebuffer layer request to change the power state.
 683  */
 684 static int s3c_fb_blank(int blank_mode, struct fb_info *info)
 685 {
 686         struct s3c_fb_win *win = info->par;
 687         struct s3c_fb *sfb = win->parent;
 688         unsigned int index = win->index;
 689         u32 wincon;
 690
 691         dev_dbg(sfb->dev, "blank mode %d\n", blank_mode);
 692
 693         wincon = readl(sfb->regs + sfb->variant.wincon + (index * 4));
 694
 695         switch (blank_mode) {
 696         case FB_BLANK_POWERDOWN:
 697                 wincon &= ~WINCONx_ENWIN;
 698                 sfb->enabled &= ~(1 << index);
 699                 /* fall through to FB_BLANK_NORMAL */
 700
 701         case FB_BLANK_NORMAL:
 702                 /* disable the DMA and display 0x0 (black) */
 703                 writel(WINxMAP_MAP | WINxMAP_MAP_COLOUR(0x0),
 704                        sfb->regs + sfb->variant.winmap + (index * 4));
 705                 break;
 706
 707         case FB_BLANK_UNBLANK:
 708                 writel(0x0, sfb->regs + sfb->variant.winmap + (index * 4));
 709                 wincon |= WINCONx_ENWIN;
 710                 sfb->enabled |= (1 << index);
 711                 break;
 712
 713         case FB_BLANK_VSYNC_SUSPEND:
 714         case FB_BLANK_HSYNC_SUSPEND:
 715         default:
 716                 return 1;
 717         }
 718
 719         writel(wincon, sfb->regs + sfb->variant.wincon + (index * 4));
 720
 721         /* Check the enabled state to see if we need to be running the
 722          * main LCD interface, as if there are no active windows then
 723          * it is highly likely that we also do not need to output
 724          * anything.
 725          */
 726
 727         /* We could do something like the following code, but the current
 728          * system of using framebuffer events means that we cannot make
 729          * the distinction between just window 0 being inactive and all
 730          * the windows being down.
 731          *
 732          * s3c_fb_enable(sfb, sfb->enabled ? 1 : 0);
 733         */
 734
 735         /* we're stuck with this until we can do something about overriding
 736          * the power control using the blanking event for a single fb.
 737          */
 738         if (index == sfb->pdata->default_win)
 739                 s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0);
 740
 741         return 0;
 742 }
 743
 744 /**
 745  * s3c_fb_pan_display() - Pan the display.
 746  *
 747  * Note that the offsets can be written to the device at any time, as their
 748  * values are latched at each vsync automatically. This also means that only
 749  * the last call to this function will have any effect on next vsync, but
 750  * there is no need to sleep waiting for it to prevent tearing.
 751  *
 752  * @var: The screen information to verify.
 753  * @info: The framebuffer device.
 754  */
 755 static int s3c_fb_pan_display(struct fb_var_screeninfo *var,
 756                               struct fb_info *info)
 757 {
 758         struct s3c_fb_win *win  = info->par;
 759         struct s3c_fb *sfb      = win->parent;
 760         void __iomem *buf       = sfb->regs + win->index * 8;
 761         unsigned int start_boff, end_boff;
 762
 763         /* Offset in bytes to the start of the displayed area */
 764         start_boff = var->yoffset * info->fix.line_length;
 765         /* X offset depends on the current bpp */
 766         if (info->var.bits_per_pixel >= 8) {
 767                 start_boff += var->xoffset * (info->var.bits_per_pixel >> 3);
 768         } else {
 769                 switch (info->var.bits_per_pixel) {
 770                 case 4:
 771                         start_boff += var->xoffset >> 1;
 772                         break;
 773                 case 2:
 774                         start_boff += var->xoffset >> 2;
 775                         break;
 776                 case 1:
 777                         start_boff += var->xoffset >> 3;
 778                         break;
 779                 default:
 780                         dev_err(sfb->dev, "invalid bpp\n");
 781                         return -EINVAL;
 782                 }
 783         }
 784         /* Offset in bytes to the end of the displayed area */
 785         end_boff = start_boff + var->yres * info->fix.line_length;
 786
 787         /* Temporarily turn off per-vsync update from shadow registers until
 788          * both start and end addresses are updated to prevent corruption */
 789         if (sfb->variant.has_prtcon)
 790                 writel(PRTCON_PROTECT, sfb->regs + PRTCON);
 791
 792         writel(info->fix.smem_start + start_boff, buf + sfb->variant.buf_start);
 793         writel(info->fix.smem_start + end_boff, buf + sfb->variant.buf_end);
 794
 795         if (sfb->variant.has_prtcon)
 796                 writel(0, sfb->regs + PRTCON);
 797
 798         return 0;
 799 }
 800
 801 static struct fb_ops s3c_fb_ops = {
 802         .owner          = THIS_MODULE,
 803         .fb_check_var   = s3c_fb_check_var,
 804         .fb_set_par     = s3c_fb_set_par,
 805         .fb_blank       = s3c_fb_blank,
 806         .fb_setcolreg   = s3c_fb_setcolreg,
 807         .fb_fillrect    = cfb_fillrect,
 808         .fb_copyarea    = cfb_copyarea,
 809         .fb_imageblit   = cfb_imageblit,
 810         .fb_pan_display = s3c_fb_pan_display,
 811 };
 812
 813 /**
 814  * s3c_fb_alloc_memory() - allocate display memory for framebuffer window
 815  * @sfb: The base resources for the hardware.
 816  * @win: The window to initialise memory for.
 817  *
 818  * Allocate memory for the given framebuffer.
 819  */
 820 static int __devinit s3c_fb_alloc_memory(struct s3c_fb *sfb,
 821                                          struct s3c_fb_win *win)
 822 {
 823         struct s3c_fb_pd_win *windata = win->windata;
 824         unsigned int real_size, virt_size, size;
 825         struct fb_info *fbi = win->fbinfo;
 826         dma_addr_t map_dma;
 827
 828         dev_dbg(sfb->dev, "allocating memory for display\n");
 829
 830         real_size = windata->win_mode.xres * windata->win_mode.yres;
 831         virt_size = windata->virtual_x * windata->virtual_y;
 832
 833         dev_dbg(sfb->dev, "real_size=%u (%u.%u), virt_size=%u (%u.%u)\n",
 834                 real_size, windata->win_mode.xres, windata->win_mode.yres,
 835                 virt_size, windata->virtual_x, windata->virtual_y);
 836
 837         size = (real_size > virt_size) ? real_size : virt_size;
 838         size *= (windata->max_bpp > 16) ? 32 : windata->max_bpp;
 839         size /= 8;
 840
 841         fbi->fix.smem_len = size;
 842         size = PAGE_ALIGN(size);
 843
 844         dev_dbg(sfb->dev, "want %u bytes for window\n", size);
 845
 846         fbi->screen_base = dma_alloc_writecombine(sfb->dev, size,
 847                                                   &map_dma, GFP_KERNEL);
 848         if (!fbi->screen_base)
 849                 return -ENOMEM;
 850
 851         dev_dbg(sfb->dev, "mapped %x to %p\n",
 852                 (unsigned int)map_dma, fbi->screen_base);
 853
 854         memset(fbi->screen_base, 0x0, size);
 855         fbi->fix.smem_start = map_dma;
 856
 857         return 0;
 858 }
 859
 860 /**
 861  * s3c_fb_free_memory() - free the display memory for the given window
 862  * @sfb: The base resources for the hardware.
 863  * @win: The window to free the display memory for.
 864  *
 865  * Free the display memory allocated by s3c_fb_alloc_memory().
 866  */
 867 static void s3c_fb_free_memory(struct s3c_fb *sfb, struct s3c_fb_win *win)
 868 {
 869         struct fb_info *fbi = win->fbinfo;
 870
 871         if (fbi->screen_base)
 872                 dma_free_writecombine(sfb->dev, PAGE_ALIGN(fbi->fix.smem_len),
 873                               fbi->screen_base, fbi->fix.smem_start);
 874 }
 875
 876 /**
 877  * s3c_fb_release_win() - release resources for a framebuffer window.
 878  * @win: The window to cleanup the resources for.
 879  *
 880  * Release the resources that where claimed for the hardware window,
 881  * such as the framebuffer instance and any memory claimed for it.
 882  */
 883 static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win)
 884 {
 885         if (win->fbinfo) {
 886                 unregister_framebuffer(win->fbinfo);
 887                 if (win->fbinfo->cmap.len)
 888                         fb_dealloc_cmap(&win->fbinfo->cmap);
 889                 s3c_fb_free_memory(sfb, win);
 890                 framebuffer_release(win->fbinfo);
 891         }
 892 }
 893
 894 /**
 895  * s3c_fb_probe_win() - register an hardware window
 896  * @sfb: The base resources for the hardware
 897  * @variant: The variant information for this window.
 898  * @res: Pointer to where to place the resultant window.
 899  *
 900  * Allocate and do the basic initialisation for one of the hardware's graphics
 901  * windows.
 902  */
 903 static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
 904                                       struct s3c_fb_win_variant *variant,
 905                                       struct s3c_fb_win **res)
 906 {
 907         struct fb_var_screeninfo *var;
 908         struct fb_videomode *initmode;
 909         struct s3c_fb_pd_win *windata;
 910         struct s3c_fb_win *win;
 911         struct fb_info *fbinfo;
 912         int palette_size;
 913         int ret;
 914
 915         dev_dbg(sfb->dev, "probing window %d, variant %p\n", win_no, variant);
 916
 917         palette_size = variant->palette_sz * 4;
 918
 919         fbinfo = framebuffer_alloc(sizeof(struct s3c_fb_win) +
 920                                    palette_size * sizeof(u32), sfb->dev);
 921         if (!fbinfo) {
 922                 dev_err(sfb->dev, "failed to allocate framebuffer\n");
 923                 return -ENOENT;
 924         }
 925
 926         windata = sfb->pdata->win[win_no];
 927         initmode = &windata->win_mode;
 928
 929         WARN_ON(windata->max_bpp == 0);
 930         WARN_ON(windata->win_mode.xres == 0);
 931         WARN_ON(windata->win_mode.yres == 0);
 932
 933         win = fbinfo->par;
 934         *res = win;
 935         var = &fbinfo->var;
 936         win->variant = *variant;
 937         win->fbinfo = fbinfo;
 938         win->parent = sfb;
 939         win->windata = windata;
 940         win->index = win_no;
 941         win->palette_buffer = (u32 *)(win + 1);
 942
 943         ret = s3c_fb_alloc_memory(sfb, win);
 944         if (ret) {
 945                 dev_err(sfb->dev, "failed to allocate display memory\n");
 946                 return ret;
 947         }
 948
 949         /* setup the r/b/g positions for the window's palette */
 950         if (win->variant.palette_16bpp) {
 951                 /* Set RGB 5:6:5 as default */
 952                 win->palette.r.offset = 11;
 953                 win->palette.r.length = 5;
 954                 win->palette.g.offset = 5;
 955                 win->palette.g.length = 6;
 956                 win->palette.b.offset = 0;
 957                 win->palette.b.length = 5;
 958
 959         } else {
 960                 /* Set 8bpp or 8bpp and 1bit alpha */
 961                 win->palette.r.offset = 16;
 962                 win->palette.r.length = 8;
 963                 win->palette.g.offset = 8;
 964                 win->palette.g.length = 8;
 965                 win->palette.b.offset = 0;
 966                 win->palette.b.length = 8;
 967         }
 968
 969         /* setup the initial video mode from the window */
 970         fb_videomode_to_var(&fbinfo->var, initmode);
 971
 972         fbinfo->fix.type        = FB_TYPE_PACKED_PIXELS;
 973         fbinfo->fix.accel       = FB_ACCEL_NONE;
 974         fbinfo->var.activate    = FB_ACTIVATE_NOW;
 975         fbinfo->var.vmode       = FB_VMODE_NONINTERLACED;
 976         fbinfo->var.bits_per_pixel = windata->default_bpp;
 977         fbinfo->fbops           = &s3c_fb_ops;
 978         fbinfo->flags           = FBINFO_FLAG_DEFAULT;
 979         fbinfo->pseudo_palette  = &win->pseudo_palette;
 980
 981         /* prepare to actually start the framebuffer */
 982
 983         ret = s3c_fb_check_var(&fbinfo->var, fbinfo);
 984         if (ret < 0) {
 985                 dev_err(sfb->dev, "check_var failed on initial video params\n");
 986                 return ret;
 987         }
 988
 989         /* create initial colour map */
 990
 991         ret = fb_alloc_cmap(&fbinfo->cmap, win->variant.palette_sz, 1);
 992         if (ret == 0)
 993                 fb_set_cmap(&fbinfo->cmap, fbinfo);
 994         else
 995                 dev_err(sfb->dev, "failed to allocate fb cmap\n");
 996
 997         s3c_fb_set_par(fbinfo);
 998
 999         dev_dbg(sfb->dev, "about to register framebuffer\n");
1000
1001         /* run the check_var and set_par on our configuration. */
1002
1003         ret = register_framebuffer(fbinfo);
1004         if (ret < 0) {
1005                 dev_err(sfb->dev, "failed to register framebuffer\n");
1006                 return ret;
1007         }
1008
1009         dev_info(sfb->dev, "window %d: fb %s\n", win_no, fbinfo->fix.id);
1010
1011         return 0;
1012 }
1013
1014 /**
1015  * s3c_fb_clear_win() - clear hardware window registers.
1016  * @sfb: The base resources for the hardware.
1017  * @win: The window to process.
1018  *
1019  * Reset the specific window registers to a known state.
1020  */
1021 static void s3c_fb_clear_win(struct s3c_fb *sfb, int win)
1022 {
1023         void __iomem *regs = sfb->regs;
1024
1025         writel(0, regs + sfb->variant.wincon + (win * 4));
1026         writel(0, regs + VIDOSD_A(win, sfb->variant));
1027         writel(0, regs + VIDOSD_B(win, sfb->variant));
1028         writel(0, regs + VIDOSD_C(win, sfb->variant));
1029 }
1030
1031 static int __devinit s3c_fb_probe(struct platform_device *pdev)
1032 {
1033         struct s3c_fb_driverdata *fbdrv;
1034         struct device *dev = &pdev->dev;
1035         struct s3c_fb_platdata *pd;
1036         struct s3c_fb *sfb;
1037         struct resource *res;
1038         int win;
1039         int ret = 0;
1040
1041         fbdrv = (struct s3c_fb_driverdata *)platform_get_device_id(pdev)->driver_data;
1042
1043         if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) {
1044                 dev_err(dev, "too many windows, cannot attach\n");
1045                 return -EINVAL;
1046         }
1047
1048         pd = pdev->dev.platform_data;
1049         if (!pd) {
1050                 dev_err(dev, "no platform data specified\n");
1051                 return -EINVAL;
1052         }
1053
1054         sfb = kzalloc(sizeof(struct s3c_fb), GFP_KERNEL);
1055         if (!sfb) {
1056                 dev_err(dev, "no memory for framebuffers\n");
1057                 return -ENOMEM;
1058         }
1059
1060         dev_dbg(dev, "allocate new framebuffer %p\n", sfb);
1061
1062         sfb->dev = dev;
1063         sfb->pdata = pd;
1064         sfb->variant = fbdrv->variant;
1065
1066         sfb->bus_clk = clk_get(dev, "lcd");
1067         if (IS_ERR(sfb->bus_clk)) {
1068                 dev_err(dev, "failed to get bus clock\n");
1069                 goto err_sfb;
1070         }
1071
1072         clk_enable(sfb->bus_clk);
1073
1074         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1075         if (!res) {
1076                 dev_err(dev, "failed to find registers\n");
1077                 ret = -ENOENT;
1078                 goto err_clk;
1079         }
1080
1081         sfb->regs_res = request_mem_region(res->start, resource_size(res),
1082                                            dev_name(dev));
1083         if (!sfb->regs_res) {
1084                 dev_err(dev, "failed to claim register region\n");
1085                 ret = -ENOENT;
1086                 goto err_clk;
1087         }
1088
1089         sfb->regs = ioremap(res->start, resource_size(res));
1090         if (!sfb->regs) {
1091                 dev_err(dev, "failed to map registers\n");
1092                 ret = -ENXIO;
1093                 goto err_req_region;
1094         }
1095
1096         dev_dbg(dev, "got resources (regs %p), probing windows\n", sfb->regs);
1097
1098         /* setup gpio and output polarity controls */
1099
1100         pd->setup_gpio();
1101
1102         writel(pd->vidcon1, sfb->regs + VIDCON1);
1103
1104         /* zero all windows before we do anything */
1105
1106         for (win = 0; win < fbdrv->variant.nr_windows; win++)
1107                 s3c_fb_clear_win(sfb, win);
1108
1109         /* initialise colour key controls */
1110         for (win = 0; win < (fbdrv->variant.nr_windows - 1); win++) {
1111                 void __iomem *regs = sfb->regs + sfb->variant.keycon;
1112
1113                 regs += (win * 8);
1114                 writel(0xffffff, regs + WKEYCON0);
1115                 writel(0xffffff, regs + WKEYCON1);
1116         }
1117
1118         /* we have the register setup, start allocating framebuffers */
1119
1120         for (win = 0; win < fbdrv->variant.nr_windows; win++) {
1121                 if (!pd->win[win])
1122                         continue;
1123
1124                 ret = s3c_fb_probe_win(sfb, win, fbdrv->win[win],
1125                                        &sfb->windows[win]);
1126                 if (ret < 0) {
1127                         dev_err(dev, "failed to create window %d\n", win);
1128                         for (; win >= 0; win--)
1129                                 s3c_fb_release_win(sfb, sfb->windows[win]);
1130                         goto err_ioremap;
1131                 }
1132         }
1133
1134         platform_set_drvdata(pdev, sfb);
1135
1136         return 0;
1137
1138 err_ioremap:
1139         iounmap(sfb->regs);
1140
1141 err_req_region:
1142         release_resource(sfb->regs_res);
1143         kfree(sfb->regs_res);
1144
1145 err_clk:
1146         clk_disable(sfb->bus_clk);
1147         clk_put(sfb->bus_clk);
1148
1149 err_sfb:
1150         kfree(sfb);
1151         return ret;
1152 }
1153
1154 /**
1155  * s3c_fb_remove() - Cleanup on module finalisation
1156  * @pdev: The platform device we are bound to.
1157  *
1158  * Shutdown and then release all the resources that the driver allocated
1159  * on initialisation.
1160  */
1161 static int __devexit s3c_fb_remove(struct platform_device *pdev)
1162 {
1163         struct s3c_fb *sfb = platform_get_drvdata(pdev);
1164         int win;
1165
1166         for (win = 0; win < S3C_FB_MAX_WIN; win++)
1167                 if (sfb->windows[win])
1168                         s3c_fb_release_win(sfb, sfb->windows[win]);
1169
1170         iounmap(sfb->regs);
1171
1172         clk_disable(sfb->bus_clk);
1173         clk_put(sfb->bus_clk);
1174
1175         release_resource(sfb->regs_res);
1176         kfree(sfb->regs_res);
1177
1178         kfree(sfb);
1179
1180         return 0;
1181 }
1182
1183 #ifdef CONFIG_PM
1184 static int s3c_fb_suspend(struct platform_device *pdev, pm_message_t state)
1185 {
1186         struct s3c_fb *sfb = platform_get_drvdata(pdev);
1187         struct s3c_fb_win *win;
1188         int win_no;
1189
1190         for (win_no = S3C_FB_MAX_WIN - 1; win_no >= 0; win_no--) {
1191                 win = sfb->windows[win_no];
1192                 if (!win)
1193                         continue;
1194
1195                 /* use the blank function to push into power-down */
1196                 s3c_fb_blank(FB_BLANK_POWERDOWN, win->fbinfo);
1197         }
1198
1199         clk_disable(sfb->bus_clk);
1200         return 0;
1201 }
1202
1203 static int s3c_fb_resume(struct platform_device *pdev)
1204 {
1205         struct s3c_fb *sfb = platform_get_drvdata(pdev);
1206         struct s3c_fb_platdata *pd = sfb->pdata;
1207         struct s3c_fb_win *win;
1208         int win_no;
1209
1210         clk_enable(sfb->bus_clk);
1211
1212         /* setup registers */
1213         writel(pd->vidcon1, sfb->regs + VIDCON1);
1214
1215         /* zero all windows before we do anything */
1216         for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++)
1217                 s3c_fb_clear_win(sfb, win_no);
1218
1219         for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) {
1220                 void __iomem *regs = sfb->regs + sfb->variant.keycon;
1221
1222                 regs += (win_no * 8);
1223                 writel(0xffffff, regs + WKEYCON0);
1224                 writel(0xffffff, regs + WKEYCON1);
1225         }
1226
1227         /* restore framebuffers */
1228         for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) {
1229                 win = sfb->windows[win_no];
1230                 if (!win)
1231                         continue;
1232
1233                 dev_dbg(&pdev->dev, "resuming window %d\n", win_no);
1234                 s3c_fb_set_par(win->fbinfo);
1235         }
1236
1237         return 0;
1238 }
1239 #else
1240 #define s3c_fb_suspend NULL
1241 #define s3c_fb_resume  NULL
1242 #endif
1243
1244
1245 #define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4))
1246 #define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8))
1247
1248 static struct s3c_fb_win_variant s3c_fb_data_64xx_wins[] __devinitdata = {
1249         [0] = {
1250                 .has_osd_c      = 1,
1251                 .palette_sz     = 256,
1252                 .valid_bpp      = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24),
1253         },
1254         [1] = {
1255                 .has_osd_c      = 1,
1256                 .has_osd_d      = 1,
1257                 .palette_sz     = 256,
1258                 .valid_bpp      = (VALID_BPP1248 | VALID_BPP(16) |
1259                                    VALID_BPP(18) | VALID_BPP(19) |
1260                                    VALID_BPP(24) | VALID_BPP(25)),
1261         },
1262         [2] = {
1263                 .has_osd_c      = 1,
1264                 .has_osd_d      = 1,
1265                 .palette_sz     = 16,
1266                 .palette_16bpp  = 1,
1267                 .valid_bpp      = (VALID_BPP1248 | VALID_BPP(16) |
1268                                    VALID_BPP(18) | VALID_BPP(19) |
1269                                    VALID_BPP(24) | VALID_BPP(25)),
1270         },
1271         [3] = {
1272                 .has_osd_c      = 1,
1273                 .has_osd_d      = 1,
1274                 .palette_sz     = 16,
1275                 .palette_16bpp  = 1,
1276                 .valid_bpp      = (VALID_BPP124  | VALID_BPP(16) |
1277                                    VALID_BPP(18) | VALID_BPP(19) |
1278                                    VALID_BPP(24) | VALID_BPP(25)),
1279         },
1280         [4] = {
1281                 .has_osd_c      = 1,
1282                 .palette_sz     = 4,
1283                 .palette_16bpp  = 1,
1284                 .valid_bpp      = (VALID_BPP(1) | VALID_BPP(2) |
1285                                    VALID_BPP(16) | VALID_BPP(18) |
1286                                    VALID_BPP(24) | VALID_BPP(25)),
1287         },
1288 };
1289
1290 static struct s3c_fb_driverdata s3c_fb_data_64xx __devinitdata = {
1291         .variant = {
1292                 .nr_windows     = 5,
1293                 .vidtcon        = VIDTCON0,
1294                 .wincon         = WINCON(0),
1295                 .winmap         = WINxMAP(0),
1296                 .keycon         = WKEYCON,
1297                 .osd            = VIDOSD_BASE,
1298                 .osd_stride     = 16,
1299                 .buf_start      = VIDW_BUF_START(0),
1300                 .buf_size       = VIDW_BUF_SIZE(0),
1301                 .buf_end        = VIDW_BUF_END(0),
1302
1303                 .palette = {
1304                         [0] = 0x400,
1305                         [1] = 0x800,
1306                         [2] = 0x300,
1307                         [3] = 0x320,
1308                         [4] = 0x340,
1309                 },
1310
1311                 .has_prtcon     = 1,
1312         },
1313         .win[0] = &s3c_fb_data_64xx_wins[0],
1314         .win[1] = &s3c_fb_data_64xx_wins[1],
1315         .win[2] = &s3c_fb_data_64xx_wins[2],
1316         .win[3] = &s3c_fb_data_64xx_wins[3],
1317         .win[4] = &s3c_fb_data_64xx_wins[4],
1318 };
1319
1320 static struct s3c_fb_driverdata s3c_fb_data_s5pc100 __devinitdata = {
1321         .variant = {
1322                 .nr_windows     = 5,
1323                 .vidtcon        = VIDTCON0,
1324                 .wincon         = WINCON(0),
1325                 .winmap         = WINxMAP(0),
1326                 .keycon         = WKEYCON,
1327                 .osd            = VIDOSD_BASE,
1328                 .osd_stride     = 16,
1329                 .buf_start      = VIDW_BUF_START(0),
1330                 .buf_size       = VIDW_BUF_SIZE(0),
1331                 .buf_end        = VIDW_BUF_END(0),
1332
1333                 .palette = {
1334                         [0] = 0x2400,
1335                         [1] = 0x2800,
1336                         [2] = 0x2c00,
1337                         [3] = 0x3000,
1338                         [4] = 0x3400,
1339                 },
1340
1341                 .has_prtcon     = 1,
1342         },
1343         .win[0] = &s3c_fb_data_64xx_wins[0],
1344         .win[1] = &s3c_fb_data_64xx_wins[1],
1345         .win[2] = &s3c_fb_data_64xx_wins[2],
1346         .win[3] = &s3c_fb_data_64xx_wins[3],
1347         .win[4] = &s3c_fb_data_64xx_wins[4],
1348 };
1349
1350 static struct s3c_fb_driverdata s3c_fb_data_s5pv210 __devinitdata = {
1351         .variant = {
1352                 .nr_windows     = 5,
1353                 .vidtcon        = VIDTCON0,
1354                 .wincon         = WINCON(0),
1355                 .winmap         = WINxMAP(0),
1356                 .keycon         = WKEYCON,
1357                 .osd            = VIDOSD_BASE,
1358                 .osd_stride     = 16,
1359                 .buf_start      = VIDW_BUF_START(0),
1360                 .buf_size       = VIDW_BUF_SIZE(0),
1361                 .buf_end        = VIDW_BUF_END(0),
1362
1363                 .palette = {
1364                         [0] = 0x2400,
1365                         [1] = 0x2800,
1366                         [2] = 0x2c00,
1367                         [3] = 0x3000,
1368                         [4] = 0x3400,
1369                 },
1370         },
1371         .win[0] = &s3c_fb_data_64xx_wins[0],
1372         .win[1] = &s3c_fb_data_64xx_wins[1],
1373         .win[2] = &s3c_fb_data_64xx_wins[2],
1374         .win[3] = &s3c_fb_data_64xx_wins[3],
1375         .win[4] = &s3c_fb_data_64xx_wins[4],
1376 };
1377
1378 /* S3C2443/S3C2416 style hardware */
1379 static struct s3c_fb_driverdata s3c_fb_data_s3c2443 __devinitdata = {
1380         .variant = {
1381                 .nr_windows     = 2,
1382                 .is_2443        = 1,
1383
1384                 .vidtcon        = 0x08,
1385                 .wincon         = 0x14,
1386                 .winmap         = 0xd0,
1387                 .keycon         = 0xb0,
1388                 .osd            = 0x28,
1389                 .osd_stride     = 12,
1390                 .buf_start      = 0x64,
1391                 .buf_size       = 0x94,
1392                 .buf_end        = 0x7c,
1393
1394                 .palette = {
1395                         [0] = 0x400,
1396                         [1] = 0x800,
1397                 },
1398         },
1399         .win[0] = &(struct s3c_fb_win_variant) {
1400                 .palette_sz     = 256,
1401                 .valid_bpp      = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24),
1402         },
1403         .win[1] = &(struct s3c_fb_win_variant) {
1404                 .has_osd_c      = 1,
1405                 .palette_sz     = 256,
1406                 .valid_bpp      = (VALID_BPP1248 | VALID_BPP(16) |
1407                                    VALID_BPP(18) | VALID_BPP(19) |
1408                                    VALID_BPP(24) | VALID_BPP(25) |
1409                                    VALID_BPP(28)),
1410         },
1411 };
1412
1413 static struct platform_device_id s3c_fb_driver_ids[] = {
1414         {
1415                 .name           = "s3c-fb",
1416                 .driver_data    = (unsigned long)&s3c_fb_data_64xx,
1417         }, {
1418                 .name           = "s5pc100-fb",
1419                 .driver_data    = (unsigned long)&s3c_fb_data_s5pc100,
1420         }, {
1421                 .name           = "s5pv210-fb",
1422                 .driver_data    = (unsigned long)&s3c_fb_data_s5pv210,
1423         }, {
1424                 .name           = "s3c2443-fb",
1425                 .driver_data    = (unsigned long)&s3c_fb_data_s3c2443,
1426         },
1427         {},
1428 };
1429 MODULE_DEVICE_TABLE(platform, s3c_fb_driver_ids);
1430
1431 static struct platform_driver s3c_fb_driver = {
1432         .probe          = s3c_fb_probe,
1433         .remove         = __devexit_p(s3c_fb_remove),
1434         .suspend        = s3c_fb_suspend,
1435         .resume         = s3c_fb_resume,
1436         .id_table       = s3c_fb_driver_ids,
1437         .driver         = {
1438                 .name   = "s3c-fb",
1439                 .owner  = THIS_MODULE,
1440         },
1441 };
1442
1443 static int __init s3c_fb_init(void)
1444 {
1445         return platform_driver_register(&s3c_fb_driver);
1446 }
1447
1448 static void __exit s3c_fb_cleanup(void)
1449 {
1450         platform_driver_unregister(&s3c_fb_driver);
1451 }
1452
1453 module_init(s3c_fb_init);
1454 module_exit(s3c_fb_cleanup);
1455
1456 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
1457 MODULE_DESCRIPTION("Samsung S3C SoC Framebuffer driver");
1458 MODULE_LICENSE("GPL");
1459 MODULE_ALIAS("platform:s3c-fb");