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  40  * has been replaced by using the platform device name to pick the correct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  */
  75 struct s3c_fb_variant {
  76         unsigned int    is_2443:1;
  77         unsigned short  nr_windows;
  78         unsigned short  vidtcon;
  79         unsigned short  wincon;
  80         unsigned short  winmap;
  81         unsigned short  keycon;
  82         unsigned short  buf_start;
  83         unsigned short  buf_end;
  84         unsigned short  buf_size;
  85         unsigned short  osd;
  86         unsigned short  osd_stride;
  87         unsigned short  palette[S3C_FB_MAX_WIN];
  88 };
  89
  90 /**
  91  * struct s3c_fb_win_variant
  92  * @has_osd_c: Set if has OSD C register.
  93  * @has_osd_d: Set if has OSD D register.
  94  * @palette_sz: Size of palette in entries.
  95  * @palette_16bpp: Set if palette is 16bits wide.
  96  * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel.
  97  *
  98  * valid_bpp bit x is set if (x+1)BPP is supported.
  99  */
 100 struct s3c_fb_win_variant {
 101         unsigned int    has_osd_c:1;
 102         unsigned int    has_osd_d:1;
 103         unsigned int    palette_16bpp:1;
 104         unsigned short  palette_sz;
 105         u32             valid_bpp;
 106 };
 107
 108 /**
 109  * struct s3c_fb_driverdata - per-device type driver data for init time.
 110  * @variant: The variant information for this driver.
 111  * @win: The window information for each window.
 112  */
 113 struct s3c_fb_driverdata {
 114         struct s3c_fb_variant   variant;
 115         struct s3c_fb_win_variant *win[S3C_FB_MAX_WIN];
 116 };
 117
 118 /**
 119  * struct s3c_fb_palette - palette information
 120  * @r: Red bitfield.
 121  * @g: Green bitfield.
 122  * @b: Blue bitfield.
 123  * @a: Alpha bitfield.
 124  */
 125 struct s3c_fb_palette {
 126         struct fb_bitfield      r;
 127         struct fb_bitfield      g;
 128         struct fb_bitfield      b;
 129         struct fb_bitfield      a;
 130 };
 131
 132 /**
 133  * struct s3c_fb_win - per window private data for each framebuffer.
 134  * @windata: The platform data supplied for the window configuration.
 135  * @parent: The hardware that this window is part of.
 136  * @fbinfo: Pointer pack to the framebuffer info for this window.
 137  * @varint: The variant information for this window.
 138  * @palette_buffer: Buffer/cache to hold palette entries.
 139  * @pseudo_palette: For use in TRUECOLOUR modes for entries 0..15/
 140  * @index: The window number of this window.
 141  * @palette: The bitfields for changing r/g/b into a hardware palette entry.
 142  */
 143 struct s3c_fb_win {
 144         struct s3c_fb_pd_win    *windata;
 145         struct s3c_fb           *parent;
 146         struct fb_info          *fbinfo;
 147         struct s3c_fb_palette    palette;
 148         struct s3c_fb_win_variant variant;
 149
 150         u32                     *palette_buffer;
 151         u32                      pseudo_palette[16];
 152         unsigned int             index;
 153 };
 154
 155 /**
 156  * struct s3c_fb - overall hardware state of the hardware
 157  * @dev: The device that we bound to, for printing, etc.
 158  * @regs_res: The resource we claimed for the IO registers.
 159  * @bus_clk: The clk (hclk) feeding our interface and possibly pixclk.
 160  * @regs: The mapped hardware registers.
 161  * @variant: Variant information for this hardware.
 162  * @enabled: A bitmask of enabled hardware windows.
 163  * @pdata: The platform configuration data passed with the device.
 164  * @windows: The hardware windows that have been claimed.
 165  */
 166 struct s3c_fb {
 167         struct device           *dev;
 168         struct resource         *regs_res;
 169         struct clk              *bus_clk;
 170         void __iomem            *regs;
 171         struct s3c_fb_variant    variant;
 172
 173         unsigned char            enabled;
 174
 175         struct s3c_fb_platdata  *pdata;
 176         struct s3c_fb_win       *windows[S3C_FB_MAX_WIN];
 177 };
 178
 179 /**
 180  * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode.
 181  * @win: The device window.
 182  * @bpp: The bit depth.
 183  */
 184 static bool s3c_fb_validate_win_bpp(struct s3c_fb_win *win, unsigned int bpp)
 185 {
 186         return win->variant.valid_bpp & VALID_BPP(bpp);
 187 }
 188
 189 /**
 190  * s3c_fb_check_var() - framebuffer layer request to verify a given mode.
 191  * @var: The screen information to verify.
 192  * @info: The framebuffer device.
 193  *
 194  * Framebuffer layer call to verify the given information and allow us to
 195  * update various information depending on the hardware capabilities.
 196  */
 197 static int s3c_fb_check_var(struct fb_var_screeninfo *var,
 198                             struct fb_info *info)
 199 {
 200         struct s3c_fb_win *win = info->par;
 201         struct s3c_fb_pd_win *windata = win->windata;
 202         struct s3c_fb *sfb = win->parent;
 203
 204         dev_dbg(sfb->dev, "checking parameters\n");
 205
 206         var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres);
 207         var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres);
 208
 209         if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) {
 210                 dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n",
 211                         win->index, var->bits_per_pixel);
 212                 return -EINVAL;
 213         }
 214
 215         /* always ensure these are zero, for drop through cases below */
 216         var->transp.offset = 0;
 217         var->transp.length = 0;
 218
 219         switch (var->bits_per_pixel) {
 220         case 1:
 221         case 2:
 222         case 4:
 223         case 8:
 224                 if (sfb->variant.palette[win->index] != 0) {
 225                         /* non palletised, A:1,R:2,G:3,B:2 mode */
 226                         var->red.offset         = 4;
 227                         var->green.offset       = 2;
 228                         var->blue.offset        = 0;
 229                         var->red.length         = 5;
 230                         var->green.length       = 3;
 231                         var->blue.length        = 2;
 232                         var->transp.offset      = 7;
 233                         var->transp.length      = 1;
 234                 } else {
 235                         var->red.offset = 0;
 236                         var->red.length = var->bits_per_pixel;
 237                         var->green      = var->red;
 238                         var->blue       = var->red;
 239                 }
 240                 break;
 241
 242         case 19:
 243                 /* 666 with one bit alpha/transparency */
 244                 var->transp.offset      = 18;
 245                 var->transp.length      = 1;
 246         case 18:
 247                 var->bits_per_pixel     = 32;
 248
 249                 /* 666 format */
 250                 var->red.offset         = 12;
 251                 var->green.offset       = 6;
 252                 var->blue.offset        = 0;
 253                 var->red.length         = 6;
 254                 var->green.length       = 6;
 255                 var->blue.length        = 6;
 256                 break;
 257
 258         case 16:
 259                 /* 16 bpp, 565 format */
 260                 var->red.offset         = 11;
 261                 var->green.offset       = 5;
 262                 var->blue.offset        = 0;
 263                 var->red.length         = 5;
 264                 var->green.length       = 6;
 265                 var->blue.length        = 5;
 266                 break;
 267
 268         case 28:
 269         case 25:
 270                 var->transp.length      = var->bits_per_pixel - 24;
 271                 var->transp.offset      = 24;
 272                 /* drop through */
 273         case 24:
 274                 /* our 24bpp is unpacked, so 32bpp */
 275                 var->bits_per_pixel     = 32;
 276         case 32:
 277                 var->red.offset         = 16;
 278                 var->red.length         = 8;
 279                 var->green.offset       = 8;
 280                 var->green.length       = 8;
 281                 var->blue.offset        = 0;
 282                 var->blue.length        = 8;
 283                 break;
 284
 285         default:
 286                 dev_err(sfb->dev, "invalid bpp\n");
 287         }
 288
 289         dev_dbg(sfb->dev, "%s: verified parameters\n", __func__);
 290         return 0;
 291 }
 292
 293 /**
 294  * s3c_fb_calc_pixclk() - calculate the divider to create the pixel clock.
 295  * @sfb: The hardware state.
 296  * @pixclock: The pixel clock wanted, in picoseconds.
 297  *
 298  * Given the specified pixel clock, work out the necessary divider to get
 299  * close to the output frequency.
 300  */
 301 static int s3c_fb_calc_pixclk(struct s3c_fb *sfb, unsigned int pixclk)
 302 {
 303         unsigned long clk = clk_get_rate(sfb->bus_clk);
 304         unsigned long long tmp;
 305         unsigned int result;
 306
 307         tmp = (unsigned long long)clk;
 308         tmp *= pixclk;
 309
 310         do_div(tmp, 1000000000UL);
 311         result = (unsigned int)tmp / 1000;
 312
 313         dev_dbg(sfb->dev, "pixclk=%u, clk=%lu, div=%d (%lu)\n",
 314                 pixclk, clk, result, clk / result);
 315
 316         return result;
 317 }
 318
 319 /**
 320  * s3c_fb_align_word() - align pixel count to word boundary
 321  * @bpp: The number of bits per pixel
 322  * @pix: The value to be aligned.
 323  *
 324  * Align the given pixel count so that it will start on an 32bit word
 325  * boundary.
 326  */
 327 static int s3c_fb_align_word(unsigned int bpp, unsigned int pix)
 328 {
 329         int pix_per_word;
 330
 331         if (bpp > 16)
 332                 return pix;
 333
 334         pix_per_word = (8 * 32) / bpp;
 335         return ALIGN(pix, pix_per_word);
 336 }
 337
 338 /**
 339  * s3c_fb_set_par() - framebuffer request to set new framebuffer state.
 340  * @info: The framebuffer to change.
 341  *
 342  * Framebuffer layer request to set a new mode for the specified framebuffer
 343  */
 344 static int s3c_fb_set_par(struct fb_info *info)
 345 {
 346         struct fb_var_screeninfo *var = &info->var;
 347         struct s3c_fb_win *win = info->par;
 348         struct s3c_fb *sfb = win->parent;
 349         void __iomem *regs = sfb->regs;
 350         void __iomem *buf = regs;
 351         int win_no = win->index;
 352         u32 osdc_data = 0;
 353         u32 data;
 354         u32 pagewidth;
 355         int clkdiv;
 356
 357         dev_dbg(sfb->dev, "setting framebuffer parameters\n");
 358
 359         switch (var->bits_per_pixel) {
 360         case 32:
 361         case 24:
 362         case 16:
 363         case 12:
 364                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 365                 break;
 366         case 8:
 367                 if (win->variant.palette_sz >= 256)
 368                         info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 369                 else
 370                         info->fix.visual = FB_VISUAL_TRUECOLOR;
 371                 break;
 372         case 1:
 373                 info->fix.visual = FB_VISUAL_MONO01;
 374                 break;
 375         default:
 376                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 377                 break;
 378         }
 379
 380         info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8;
 381
 382         /* disable the window whilst we update it */
 383         writel(0, regs + WINCON(win_no));
 384
 385         /* use platform specified window as the basis for the lcd timings */
 386
 387         if (win_no == sfb->pdata->default_win) {
 388                 clkdiv = s3c_fb_calc_pixclk(sfb, var->pixclock);
 389
 390                 data = sfb->pdata->vidcon0;
 391                 data &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR);
 392
 393                 if (clkdiv > 1)
 394                         data |= VIDCON0_CLKVAL_F(clkdiv-1) | VIDCON0_CLKDIR;
 395                 else
 396                         data &= ~VIDCON0_CLKDIR;        /* 1:1 clock */
 397
 398                 /* write the timing data to the panel */
 399
 400                 if (sfb->variant.is_2443)
 401                         data |= (1 << 5);
 402
 403                 data |= VIDCON0_ENVID | VIDCON0_ENVID_F;
 404                 writel(data, regs + VIDCON0);
 405
 406                 data = VIDTCON0_VBPD(var->upper_margin - 1) |
 407                        VIDTCON0_VFPD(var->lower_margin - 1) |
 408                        VIDTCON0_VSPW(var->vsync_len - 1);
 409
 410                 writel(data, regs + sfb->variant.vidtcon);
 411
 412                 data = VIDTCON1_HBPD(var->left_margin - 1) |
 413                        VIDTCON1_HFPD(var->right_margin - 1) |
 414                        VIDTCON1_HSPW(var->hsync_len - 1);
 415
 416                 /* VIDTCON1 */
 417                 writel(data, regs + sfb->variant.vidtcon + 4);
 418
 419                 data = VIDTCON2_LINEVAL(var->yres - 1) |
 420                        VIDTCON2_HOZVAL(var->xres - 1);
 421                 writel(data, regs +sfb->variant.vidtcon + 8 );
 422         }
 423
 424         /* write the buffer address */
 425
 426         /* start and end registers stride is 8 */
 427         buf = regs + win_no * 8;
 428
 429         writel(info->fix.smem_start, buf + sfb->variant.buf_start);
 430
 431         data = info->fix.smem_start + info->fix.line_length * var->yres;
 432         writel(data, buf + sfb->variant.buf_end);
 433
 434         pagewidth = (var->xres * var->bits_per_pixel) >> 3;
 435         data = VIDW_BUF_SIZE_OFFSET(info->fix.line_length - pagewidth) |
 436                VIDW_BUF_SIZE_PAGEWIDTH(pagewidth);
 437         writel(data, regs + sfb->variant.buf_size + (win_no * 4));
 438
 439         /* write 'OSD' registers to control position of framebuffer */
 440
 441         data = VIDOSDxA_TOPLEFT_X(0) | VIDOSDxA_TOPLEFT_Y(0);
 442         writel(data, regs + VIDOSD_A(win_no, sfb->variant));
 443
 444         data = VIDOSDxB_BOTRIGHT_X(s3c_fb_align_word(var->bits_per_pixel,
 445                                                      var->xres - 1)) |
 446                VIDOSDxB_BOTRIGHT_Y(var->yres - 1);
 447
 448         writel(data, regs + VIDOSD_B(win_no, sfb->variant));
 449
 450         data = var->xres * var->yres;
 451
 452         osdc_data = VIDISD14C_ALPHA1_R(0xf) |
 453                 VIDISD14C_ALPHA1_G(0xf) |
 454                 VIDISD14C_ALPHA1_B(0xf);
 455
 456         if (win->variant.has_osd_d) {
 457                 writel(data, regs + VIDOSD_D(win_no, sfb->variant));
 458                 writel(osdc_data, regs + VIDOSD_C(win_no, sfb->variant));
 459         } else
 460                 writel(data, regs + VIDOSD_C(win_no, sfb->variant));
 461
 462         data = WINCONx_ENWIN;
 463
 464         /* note, since we have to round up the bits-per-pixel, we end up
 465          * relying on the bitfield information for r/g/b/a to work out
 466          * exactly which mode of operation is intended. */
 467
 468         switch (var->bits_per_pixel) {
 469         case 1:
 470                 data |= WINCON0_BPPMODE_1BPP;
 471                 data |= WINCONx_BITSWP;
 472                 data |= WINCONx_BURSTLEN_4WORD;
 473                 break;
 474         case 2:
 475                 data |= WINCON0_BPPMODE_2BPP;
 476                 data |= WINCONx_BITSWP;
 477                 data |= WINCONx_BURSTLEN_8WORD;
 478                 break;
 479         case 4:
 480                 data |= WINCON0_BPPMODE_4BPP;
 481                 data |= WINCONx_BITSWP;
 482                 data |= WINCONx_BURSTLEN_8WORD;
 483                 break;
 484         case 8:
 485                 if (var->transp.length != 0)
 486                         data |= WINCON1_BPPMODE_8BPP_1232;
 487                 else
 488                         data |= WINCON0_BPPMODE_8BPP_PALETTE;
 489                 data |= WINCONx_BURSTLEN_8WORD;
 490                 data |= WINCONx_BYTSWP;
 491                 break;
 492         case 16:
 493                 if (var->transp.length != 0)
 494                         data |= WINCON1_BPPMODE_16BPP_A1555;
 495                 else
 496                         data |= WINCON0_BPPMODE_16BPP_565;
 497                 data |= WINCONx_HAWSWP;
 498                 data |= WINCONx_BURSTLEN_16WORD;
 499                 break;
 500         case 24:
 501         case 32:
 502                 if (var->red.length == 6) {
 503                         if (var->transp.length != 0)
 504                                 data |= WINCON1_BPPMODE_19BPP_A1666;
 505                         else
 506                                 data |= WINCON1_BPPMODE_18BPP_666;
 507                 } else if (var->transp.length == 1)
 508                         data |= WINCON1_BPPMODE_25BPP_A1888
 509                                 | WINCON1_BLD_PIX;
 510                 else if (var->transp.length == 4)
 511                         data |= WINCON1_BPPMODE_28BPP_A4888
 512                                 | WINCON1_BLD_PIX | WINCON1_ALPHA_SEL;
 513                 else
 514                         data |= WINCON0_BPPMODE_24BPP_888;
 515
 516                 data |= WINCONx_WSWP;
 517                 data |= WINCONx_BURSTLEN_16WORD;
 518                 break;
 519         }
 520
 521         /* Enable the colour keying for the window below this one */
 522         if (win_no > 0) {
 523                 u32 keycon0_data = 0, keycon1_data = 0;
 524                 void __iomem *keycon = regs + sfb->variant.keycon;
 525
 526                 keycon0_data = ~(WxKEYCON0_KEYBL_EN |
 527                                 WxKEYCON0_KEYEN_F |
 528                                 WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0);
 529
 530                 keycon1_data = WxKEYCON1_COLVAL(0xffffff);
 531
 532                 keycon += (win_no - 1) * 8;
 533
 534                 writel(keycon0_data, keycon + WKEYCON0);
 535                 writel(keycon1_data, keycon + WKEYCON1);
 536         }
 537
 538         writel(data, regs + sfb->variant.wincon + (win_no * 4));
 539         writel(0x0, regs + sfb->variant.winmap + (win_no * 4));
 540
 541         return 0;
 542 }
 543
 544 /**
 545  * s3c_fb_update_palette() - set or schedule a palette update.
 546  * @sfb: The hardware information.
 547  * @win: The window being updated.
 548  * @reg: The palette index being changed.
 549  * @value: The computed palette value.
 550  *
 551  * Change the value of a palette register, either by directly writing to
 552  * the palette (this requires the palette RAM to be disconnected from the
 553  * hardware whilst this is in progress) or schedule the update for later.
 554  *
 555  * At the moment, since we have no VSYNC interrupt support, we simply set
 556  * the palette entry directly.
 557  */
 558 static void s3c_fb_update_palette(struct s3c_fb *sfb,
 559                                   struct s3c_fb_win *win,
 560                                   unsigned int reg,
 561                                   u32 value)
 562 {
 563         void __iomem *palreg;
 564         u32 palcon;
 565
 566         palreg = sfb->regs + sfb->variant.palette[win->index];
 567
 568         dev_dbg(sfb->dev, "%s: win %d, reg %d (%p): %08x\n",
 569                 __func__, win->index, reg, palreg, value);
 570
 571         win->palette_buffer[reg] = value;
 572
 573         palcon = readl(sfb->regs + WPALCON);
 574         writel(palcon | WPALCON_PAL_UPDATE, sfb->regs + WPALCON);
 575
 576         if (win->variant.palette_16bpp)
 577                 writew(value, palreg + (reg * 2));
 578         else
 579                 writel(value, palreg + (reg * 4));
 580
 581         writel(palcon, sfb->regs + WPALCON);
 582 }
 583
 584 static inline unsigned int chan_to_field(unsigned int chan,
 585                                          struct fb_bitfield *bf)
 586 {
 587         chan &= 0xffff;
 588         chan >>= 16 - bf->length;
 589         return chan << bf->offset;
 590 }
 591
 592 /**
 593  * s3c_fb_setcolreg() - framebuffer layer request to change palette.
 594  * @regno: The palette index to change.
 595  * @red: The red field for the palette data.
 596  * @green: The green field for the palette data.
 597  * @blue: The blue field for the palette data.
 598  * @trans: The transparency (alpha) field for the palette data.
 599  * @info: The framebuffer being changed.
 600  */
 601 static int s3c_fb_setcolreg(unsigned regno,
 602                             unsigned red, unsigned green, unsigned blue,
 603                             unsigned transp, struct fb_info *info)
 604 {
 605         struct s3c_fb_win *win = info->par;
 606         struct s3c_fb *sfb = win->parent;
 607         unsigned int val;
 608
 609         dev_dbg(sfb->dev, "%s: win %d: %d => rgb=%d/%d/%d\n",
 610                 __func__, win->index, regno, red, green, blue);
 611
 612         switch (info->fix.visual) {
 613         case FB_VISUAL_TRUECOLOR:
 614                 /* true-colour, use pseudo-palette */
 615
 616                 if (regno < 16) {
 617                         u32 *pal = info->pseudo_palette;
 618
 619                         val  = chan_to_field(red,   &info->var.red);
 620                         val |= chan_to_field(green, &info->var.green);
 621                         val |= chan_to_field(blue,  &info->var.blue);
 622
 623                         pal[regno] = val;
 624                 }
 625                 break;
 626
 627         case FB_VISUAL_PSEUDOCOLOR:
 628                 if (regno < win->variant.palette_sz) {
 629                         val  = chan_to_field(red, &win->palette.r);
 630                         val |= chan_to_field(green, &win->palette.g);
 631                         val |= chan_to_field(blue, &win->palette.b);
 632
 633                         s3c_fb_update_palette(sfb, win, regno, val);
 634                 }
 635
 636                 break;
 637
 638         default:
 639                 return 1;       /* unknown type */
 640         }
 641
 642         return 0;
 643 }
 644
 645 /**
 646  * s3c_fb_enable() - Set the state of the main LCD output
 647  * @sfb: The main framebuffer state.
 648  * @enable: The state to set.
 649  */
 650 static void s3c_fb_enable(struct s3c_fb *sfb, int enable)
 651 {
 652         u32 vidcon0 = readl(sfb->regs + VIDCON0);
 653
 654         if (enable)
 655                 vidcon0 |= VIDCON0_ENVID | VIDCON0_ENVID_F;
 656         else {
 657                 /* see the note in the framebuffer datasheet about
 658                  * why you cannot take both of these bits down at the
 659                  * same time. */
 660
 661                 if (!(vidcon0 & VIDCON0_ENVID))
 662                         return;
 663
 664                 vidcon0 |= VIDCON0_ENVID;
 665                 vidcon0 &= ~VIDCON0_ENVID_F;
 666         }
 667
 668         writel(vidcon0, sfb->regs + VIDCON0);
 669 }
 670
 671 /**
 672  * s3c_fb_blank() - blank or unblank the given window
 673  * @blank_mode: The blank state from FB_BLANK_*
 674  * @info: The framebuffer to blank.
 675  *
 676  * Framebuffer layer request to change the power state.
 677  */
 678 static int s3c_fb_blank(int blank_mode, struct fb_info *info)
 679 {
 680         struct s3c_fb_win *win = info->par;
 681         struct s3c_fb *sfb = win->parent;
 682         unsigned int index = win->index;
 683         u32 wincon;
 684
 685         dev_dbg(sfb->dev, "blank mode %d\n", blank_mode);
 686
 687         wincon = readl(sfb->regs + sfb->variant.wincon + (index * 4));
 688
 689         switch (blank_mode) {
 690         case FB_BLANK_POWERDOWN:
 691                 wincon &= ~WINCONx_ENWIN;
 692                 sfb->enabled &= ~(1 << index);
 693                 /* fall through to FB_BLANK_NORMAL */
 694
 695         case FB_BLANK_NORMAL:
 696                 /* disable the DMA and display 0x0 (black) */
 697                 writel(WINxMAP_MAP | WINxMAP_MAP_COLOUR(0x0),
 698                        sfb->regs + sfb->variant.winmap + (index * 4));
 699                 break;
 700
 701         case FB_BLANK_UNBLANK:
 702                 writel(0x0, sfb->regs + sfb->variant.winmap + (index * 4));
 703                 wincon |= WINCONx_ENWIN;
 704                 sfb->enabled |= (1 << index);
 705                 break;
 706
 707         case FB_BLANK_VSYNC_SUSPEND:
 708         case FB_BLANK_HSYNC_SUSPEND:
 709         default:
 710                 return 1;
 711         }
 712
 713         writel(wincon, sfb->regs + sfb->variant.wincon + (index * 4));
 714
 715         /* Check the enabled state to see if we need to be running the
 716          * main LCD interface, as if there are no active windows then
 717          * it is highly likely that we also do not need to output
 718          * anything.
 719          */
 720
 721         /* We could do something like the following code, but the current
 722          * system of using framebuffer events means that we cannot make
 723          * the distinction between just window 0 being inactive and all
 724          * the windows being down.
 725          *
 726          * s3c_fb_enable(sfb, sfb->enabled ? 1 : 0);
 727         */
 728
 729         /* we're stuck with this until we can do something about overriding
 730          * the power control using the blanking event for a single fb.
 731          */
 732         if (index == sfb->pdata->default_win)
 733                 s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0);
 734
 735         return 0;
 736 }
 737
 738 static struct fb_ops s3c_fb_ops = {
 739         .owner          = THIS_MODULE,
 740         .fb_check_var   = s3c_fb_check_var,
 741         .fb_set_par     = s3c_fb_set_par,
 742         .fb_blank       = s3c_fb_blank,
 743         .fb_setcolreg   = s3c_fb_setcolreg,
 744         .fb_fillrect    = cfb_fillrect,
 745         .fb_copyarea    = cfb_copyarea,
 746         .fb_imageblit   = cfb_imageblit,
 747 };
 748
 749 /**
 750  * s3c_fb_alloc_memory() - allocate display memory for framebuffer window
 751  * @sfb: The base resources for the hardware.
 752  * @win: The window to initialise memory for.
 753  *
 754  * Allocate memory for the given framebuffer.
 755  */
 756 static int __devinit s3c_fb_alloc_memory(struct s3c_fb *sfb,
 757                                          struct s3c_fb_win *win)
 758 {
 759         struct s3c_fb_pd_win *windata = win->windata;
 760         unsigned int real_size, virt_size, size;
 761         struct fb_info *fbi = win->fbinfo;
 762         dma_addr_t map_dma;
 763
 764         dev_dbg(sfb->dev, "allocating memory for display\n");
 765
 766         real_size = windata->win_mode.xres * windata->win_mode.yres;
 767         virt_size = windata->virtual_x * windata->virtual_y;
 768
 769         dev_dbg(sfb->dev, "real_size=%u (%u.%u), virt_size=%u (%u.%u)\n",
 770                 real_size, windata->win_mode.xres, windata->win_mode.yres,
 771                 virt_size, windata->virtual_x, windata->virtual_y);
 772
 773         size = (real_size > virt_size) ? real_size : virt_size;
 774         size *= (windata->max_bpp > 16) ? 32 : windata->max_bpp;
 775         size /= 8;
 776
 777         fbi->fix.smem_len = size;
 778         size = PAGE_ALIGN(size);
 779
 780         dev_dbg(sfb->dev, "want %u bytes for window\n", size);
 781
 782         fbi->screen_base = dma_alloc_writecombine(sfb->dev, size,
 783                                                   &map_dma, GFP_KERNEL);
 784         if (!fbi->screen_base)
 785                 return -ENOMEM;
 786
 787         dev_dbg(sfb->dev, "mapped %x to %p\n",
 788                 (unsigned int)map_dma, fbi->screen_base);
 789
 790         memset(fbi->screen_base, 0x0, size);
 791         fbi->fix.smem_start = map_dma;
 792
 793         return 0;
 794 }
 795
 796 /**
 797  * s3c_fb_free_memory() - free the display memory for the given window
 798  * @sfb: The base resources for the hardware.
 799  * @win: The window to free the display memory for.
 800  *
 801  * Free the display memory allocated by s3c_fb_alloc_memory().
 802  */
 803 static void s3c_fb_free_memory(struct s3c_fb *sfb, struct s3c_fb_win *win)
 804 {
 805         struct fb_info *fbi = win->fbinfo;
 806
 807         dma_free_writecombine(sfb->dev, PAGE_ALIGN(fbi->fix.smem_len),
 808                               fbi->screen_base, fbi->fix.smem_start);
 809 }
 810
 811 /**
 812  * s3c_fb_release_win() - release resources for a framebuffer window.
 813  * @win: The window to cleanup the resources for.
 814  *
 815  * Release the resources that where claimed for the hardware window,
 816  * such as the framebuffer instance and any memory claimed for it.
 817  */
 818 static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win)
 819 {
 820         if (win->fbinfo) {
 821                 unregister_framebuffer(win->fbinfo);
 822                 fb_dealloc_cmap(&win->fbinfo->cmap);
 823                 s3c_fb_free_memory(sfb, win);
 824                 framebuffer_release(win->fbinfo);
 825         }
 826 }
 827
 828 /**
 829  * s3c_fb_probe_win() - register an hardware window
 830  * @sfb: The base resources for the hardware
 831  * @variant: The variant information for this window.
 832  * @res: Pointer to where to place the resultant window.
 833  *
 834  * Allocate and do the basic initialisation for one of the hardware's graphics
 835  * windows.
 836  */
 837 static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
 838                                       struct s3c_fb_win_variant *variant,
 839                                       struct s3c_fb_win **res)
 840 {
 841         struct fb_var_screeninfo *var;
 842         struct fb_videomode *initmode;
 843         struct s3c_fb_pd_win *windata;
 844         struct s3c_fb_win *win;
 845         struct fb_info *fbinfo;
 846         int palette_size;
 847         int ret;
 848
 849         dev_dbg(sfb->dev, "probing window %d, variant %p\n", win_no, variant);
 850
 851         palette_size = variant->palette_sz * 4;
 852
 853         fbinfo = framebuffer_alloc(sizeof(struct s3c_fb_win) +
 854                                    palette_size * sizeof(u32), sfb->dev);
 855         if (!fbinfo) {
 856                 dev_err(sfb->dev, "failed to allocate framebuffer\n");
 857                 return -ENOENT;
 858         }
 859
 860         windata = sfb->pdata->win[win_no];
 861         initmode = &windata->win_mode;
 862
 863         WARN_ON(windata->max_bpp == 0);
 864         WARN_ON(windata->win_mode.xres == 0);
 865         WARN_ON(windata->win_mode.yres == 0);
 866
 867         win = fbinfo->par;
 868         var = &fbinfo->var;
 869         win->variant = *variant;
 870         win->fbinfo = fbinfo;
 871         win->parent = sfb;
 872         win->windata = windata;
 873         win->index = win_no;
 874         win->palette_buffer = (u32 *)(win + 1);
 875
 876         ret = s3c_fb_alloc_memory(sfb, win);
 877         if (ret) {
 878                 dev_err(sfb->dev, "failed to allocate display memory\n");
 879                 return ret;
 880         }
 881
 882         /* setup the r/b/g positions for the window's palette */
 883         if (win->variant.palette_16bpp) {
 884                 /* Set RGB 5:6:5 as default */
 885                 win->palette.r.offset = 11;
 886                 win->palette.r.length = 5;
 887                 win->palette.g.offset = 5;
 888                 win->palette.g.length = 6;
 889                 win->palette.b.offset = 0;
 890                 win->palette.b.length = 5;
 891
 892         } else {
 893                 /* Set 8bpp or 8bpp and 1bit alpha */
 894                 win->palette.r.offset = 16;
 895                 win->palette.r.length = 8;
 896                 win->palette.g.offset = 8;
 897                 win->palette.g.length = 8;
 898                 win->palette.b.offset = 0;
 899                 win->palette.b.length = 8;
 900         }
 901
 902         /* setup the initial video mode from the window */
 903         fb_videomode_to_var(&fbinfo->var, initmode);
 904
 905         fbinfo->fix.type        = FB_TYPE_PACKED_PIXELS;
 906         fbinfo->fix.accel       = FB_ACCEL_NONE;
 907         fbinfo->var.activate    = FB_ACTIVATE_NOW;
 908         fbinfo->var.vmode       = FB_VMODE_NONINTERLACED;
 909         fbinfo->var.bits_per_pixel = windata->default_bpp;
 910         fbinfo->fbops           = &s3c_fb_ops;
 911         fbinfo->flags           = FBINFO_FLAG_DEFAULT;
 912         fbinfo->pseudo_palette  = &win->pseudo_palette;
 913
 914         /* prepare to actually start the framebuffer */
 915
 916         ret = s3c_fb_check_var(&fbinfo->var, fbinfo);
 917         if (ret < 0) {
 918                 dev_err(sfb->dev, "check_var failed on initial video params\n");
 919                 return ret;
 920         }
 921
 922         /* create initial colour map */
 923
 924         ret = fb_alloc_cmap(&fbinfo->cmap, win->variant.palette_sz, 1);
 925         if (ret == 0)
 926                 fb_set_cmap(&fbinfo->cmap, fbinfo);
 927         else
 928                 dev_err(sfb->dev, "failed to allocate fb cmap\n");
 929
 930         s3c_fb_set_par(fbinfo);
 931
 932         dev_dbg(sfb->dev, "about to register framebuffer\n");
 933
 934         /* run the check_var and set_par on our configuration. */
 935
 936         ret = register_framebuffer(fbinfo);
 937         if (ret < 0) {
 938                 dev_err(sfb->dev, "failed to register framebuffer\n");
 939                 return ret;
 940         }
 941
 942         *res = win;
 943         dev_info(sfb->dev, "window %d: fb %s\n", win_no, fbinfo->fix.id);
 944
 945         return 0;
 946 }
 947
 948 /**
 949  * s3c_fb_clear_win() - clear hardware window registers.
 950  * @sfb: The base resources for the hardware.
 951  * @win: The window to process.
 952  *
 953  * Reset the specific window registers to a known state.
 954  */
 955 static void s3c_fb_clear_win(struct s3c_fb *sfb, int win)
 956 {
 957         void __iomem *regs = sfb->regs;
 958
 959         writel(0, regs + sfb->variant.wincon + (win * 4));
 960         writel(0, regs + VIDOSD_A(win, sfb->variant));
 961         writel(0, regs + VIDOSD_B(win, sfb->variant));
 962         writel(0, regs + VIDOSD_C(win, sfb->variant));
 963 }
 964
 965 static int __devinit s3c_fb_probe(struct platform_device *pdev)
 966 {
 967         struct s3c_fb_driverdata *fbdrv;
 968         struct device *dev = &pdev->dev;
 969         struct s3c_fb_platdata *pd;
 970         struct s3c_fb *sfb;
 971         struct resource *res;
 972         int win;
 973         int ret = 0;
 974
 975         fbdrv = (struct s3c_fb_driverdata *)platform_get_device_id(pdev)->driver_data;
 976
 977         if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) {
 978                 dev_err(dev, "too many windows, cannot attach\n");
 979                 return -EINVAL;
 980         }
 981
 982         pd = pdev->dev.platform_data;
 983         if (!pd) {
 984                 dev_err(dev, "no platform data specified\n");
 985                 return -EINVAL;
 986         }
 987
 988         sfb = kzalloc(sizeof(struct s3c_fb), GFP_KERNEL);
 989         if (!sfb) {
 990                 dev_err(dev, "no memory for framebuffers\n");
 991                 return -ENOMEM;
 992         }
 993
 994         dev_dbg(dev, "allocate new framebuffer %p\n", sfb);
 995
 996         sfb->dev = dev;
 997         sfb->pdata = pd;
 998         sfb->variant = fbdrv->variant;
 999
1000         sfb->bus_clk = clk_get(dev, "lcd");
1001         if (IS_ERR(sfb->bus_clk)) {
1002                 dev_err(dev, "failed to get bus clock\n");
1003                 goto err_sfb;
1004         }
1005
1006         clk_enable(sfb->bus_clk);
1007
1008         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1009         if (!res) {
1010                 dev_err(dev, "failed to find registers\n");
1011                 ret = -ENOENT;
1012                 goto err_clk;
1013         }
1014
1015         sfb->regs_res = request_mem_region(res->start, resource_size(res),
1016                                            dev_name(dev));
1017         if (!sfb->regs_res) {
1018                 dev_err(dev, "failed to claim register region\n");
1019                 ret = -ENOENT;
1020                 goto err_clk;
1021         }
1022
1023         sfb->regs = ioremap(res->start, resource_size(res));
1024         if (!sfb->regs) {
1025                 dev_err(dev, "failed to map registers\n");
1026                 ret = -ENXIO;
1027                 goto err_req_region;
1028         }
1029
1030         dev_dbg(dev, "got resources (regs %p), probing windows\n", sfb->regs);
1031
1032         /* setup gpio and output polarity controls */
1033
1034         pd->setup_gpio();
1035
1036         writel(pd->vidcon1, sfb->regs + VIDCON1);
1037
1038         /* zero all windows before we do anything */
1039
1040         for (win = 0; win < fbdrv->variant.nr_windows; win++)
1041                 s3c_fb_clear_win(sfb, win);
1042
1043         /* initialise colour key controls */
1044         for (win = 0; win < (fbdrv->variant.nr_windows - 1); win++) {
1045                 void __iomem *regs = sfb->regs + sfb->variant.keycon;
1046
1047                 regs += (win * 8);
1048                 writel(0xffffff, regs + WKEYCON0);
1049                 writel(0xffffff, regs + WKEYCON1);
1050         }
1051
1052         /* we have the register setup, start allocating framebuffers */
1053
1054         for (win = 0; win < fbdrv->variant.nr_windows; win++) {
1055                 if (!pd->win[win])
1056                         continue;
1057
1058                 ret = s3c_fb_probe_win(sfb, win, fbdrv->win[win],
1059                                        &sfb->windows[win]);
1060                 if (ret < 0) {
1061                         dev_err(dev, "failed to create window %d\n", win);
1062                         for (; win >= 0; win--)
1063                                 s3c_fb_release_win(sfb, sfb->windows[win]);
1064                         goto err_ioremap;
1065                 }
1066         }
1067
1068         platform_set_drvdata(pdev, sfb);
1069
1070         return 0;
1071
1072 err_ioremap:
1073         iounmap(sfb->regs);
1074
1075 err_req_region:
1076         release_resource(sfb->regs_res);
1077         kfree(sfb->regs_res);
1078
1079 err_clk:
1080         clk_disable(sfb->bus_clk);
1081         clk_put(sfb->bus_clk);
1082
1083 err_sfb:
1084         kfree(sfb);
1085         return ret;
1086 }
1087
1088 /**
1089  * s3c_fb_remove() - Cleanup on module finalisation
1090  * @pdev: The platform device we are bound to.
1091  *
1092  * Shutdown and then release all the resources that the driver allocated
1093  * on initialisation.
1094  */
1095 static int __devexit s3c_fb_remove(struct platform_device *pdev)
1096 {
1097         struct s3c_fb *sfb = platform_get_drvdata(pdev);
1098         int win;
1099
1100         for (win = 0; win < S3C_FB_MAX_WIN; win++)
1101                 if (sfb->windows[win])
1102                         s3c_fb_release_win(sfb, sfb->windows[win]);
1103
1104         iounmap(sfb->regs);
1105
1106         clk_disable(sfb->bus_clk);
1107         clk_put(sfb->bus_clk);
1108
1109         release_resource(sfb->regs_res);
1110         kfree(sfb->regs_res);
1111
1112         kfree(sfb);
1113
1114         return 0;
1115 }
1116
1117 #ifdef CONFIG_PM
1118 static int s3c_fb_suspend(struct platform_device *pdev, pm_message_t state)
1119 {
1120         struct s3c_fb *sfb = platform_get_drvdata(pdev);
1121         struct s3c_fb_win *win;
1122         int win_no;
1123
1124         for (win_no = S3C_FB_MAX_WIN - 1; win_no >= 0; win_no--) {
1125                 win = sfb->windows[win_no];
1126                 if (!win)
1127                         continue;
1128
1129                 /* use the blank function to push into power-down */
1130                 s3c_fb_blank(FB_BLANK_POWERDOWN, win->fbinfo);
1131         }
1132
1133         clk_disable(sfb->bus_clk);
1134         return 0;
1135 }
1136
1137 static int s3c_fb_resume(struct platform_device *pdev)
1138 {
1139         struct s3c_fb *sfb = platform_get_drvdata(pdev);
1140         struct s3c_fb_platdata *pd = sfb->pdata;
1141         struct s3c_fb_win *win;
1142         int win_no;
1143
1144         clk_enable(sfb->bus_clk);
1145
1146         /* setup registers */
1147         writel(pd->vidcon1, sfb->regs + VIDCON1);
1148
1149         /* zero all windows before we do anything */
1150         for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++)
1151                 s3c_fb_clear_win(sfb, win_no);
1152
1153         for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) {
1154                 void __iomem *regs = sfb->regs + sfb->variant.keycon;
1155
1156                 regs += (win_no * 8);
1157                 writel(0xffffff, regs + WKEYCON0);
1158                 writel(0xffffff, regs + WKEYCON1);
1159         }
1160
1161         /* restore framebuffers */
1162         for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++) {
1163                 win = sfb->windows[win_no];
1164                 if (!win)
1165                         continue;
1166
1167                 dev_dbg(&pdev->dev, "resuming window %d\n", win_no);
1168                 s3c_fb_set_par(win->fbinfo);
1169         }
1170
1171         return 0;
1172 }
1173 #else
1174 #define s3c_fb_suspend NULL
1175 #define s3c_fb_resume  NULL
1176 #endif
1177
1178
1179 #define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4))
1180 #define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8))
1181
1182 static struct s3c_fb_win_variant s3c_fb_data_64xx_wins[] __devinitdata = {
1183         [0] = {
1184                 .has_osd_c      = 1,
1185                 .palette_sz     = 256,
1186                 .valid_bpp      = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24),
1187         },
1188         [1] = {
1189                 .has_osd_c      = 1,
1190                 .has_osd_d      = 1,
1191                 .palette_sz     = 256,
1192                 .valid_bpp      = (VALID_BPP1248 | VALID_BPP(16) |
1193                                    VALID_BPP(18) | VALID_BPP(19) |
1194                                    VALID_BPP(24) | VALID_BPP(25)),
1195         },
1196         [2] = {
1197                 .has_osd_c      = 1,
1198                 .has_osd_d      = 1,
1199                 .palette_sz     = 16,
1200                 .palette_16bpp  = 1,
1201                 .valid_bpp      = (VALID_BPP1248 | VALID_BPP(16) |
1202                                    VALID_BPP(18) | VALID_BPP(19) |
1203                                    VALID_BPP(24) | VALID_BPP(25)),
1204         },
1205         [3] = {
1206                 .has_osd_c      = 1,
1207                 .has_osd_d      = 1,
1208                 .palette_sz     = 16,
1209                 .palette_16bpp  = 1,
1210                 .valid_bpp      = (VALID_BPP124  | VALID_BPP(16) |
1211                                    VALID_BPP(18) | VALID_BPP(19) |
1212                                    VALID_BPP(24) | VALID_BPP(25)),
1213         },
1214         [4] = {
1215                 .has_osd_c      = 1,
1216                 .palette_sz     = 4,
1217                 .palette_16bpp  = 1,
1218                 .valid_bpp      = (VALID_BPP(1) | VALID_BPP(2) |
1219                                    VALID_BPP(16) | VALID_BPP(18) |
1220                                    VALID_BPP(24) | VALID_BPP(25)),
1221         },
1222 };
1223
1224 static struct s3c_fb_driverdata s3c_fb_data_64xx __devinitdata = {
1225         .variant = {
1226                 .nr_windows     = 5,
1227                 .vidtcon        = VIDTCON0,
1228                 .wincon         = WINCON(0),
1229                 .winmap         = WINxMAP(0),
1230                 .keycon         = WKEYCON,
1231                 .osd            = VIDOSD_BASE,
1232                 .osd_stride     = 16,
1233                 .buf_start      = VIDW_BUF_START(0),
1234                 .buf_size       = VIDW_BUF_SIZE(0),
1235                 .buf_end        = VIDW_BUF_END(0),
1236
1237                 .palette = {
1238                         [0] = 0x400,
1239                         [1] = 0x800,
1240                         [2] = 0x300,
1241                         [3] = 0x320,
1242                         [4] = 0x340,
1243                 },
1244         },
1245         .win[0] = &s3c_fb_data_64xx_wins[0],
1246         .win[1] = &s3c_fb_data_64xx_wins[1],
1247         .win[2] = &s3c_fb_data_64xx_wins[2],
1248         .win[3] = &s3c_fb_data_64xx_wins[3],
1249         .win[4] = &s3c_fb_data_64xx_wins[4],
1250 };
1251
1252 static struct s3c_fb_driverdata s3c_fb_data_s5p __devinitdata = {
1253         .variant = {
1254                 .nr_windows     = 5,
1255                 .vidtcon        = VIDTCON0,
1256                 .wincon         = WINCON(0),
1257                 .winmap         = WINxMAP(0),
1258                 .keycon         = WKEYCON,
1259                 .osd            = VIDOSD_BASE,
1260                 .osd_stride     = 16,
1261                 .buf_start      = VIDW_BUF_START(0),
1262                 .buf_size       = VIDW_BUF_SIZE(0),
1263                 .buf_end        = VIDW_BUF_END(0),
1264
1265                 .palette = {
1266                         [0] = 0x2400,
1267                         [1] = 0x2800,
1268                         [2] = 0x2c00,
1269                         [3] = 0x3000,
1270                         [4] = 0x3400,
1271                 },
1272         },
1273         .win[0] = &s3c_fb_data_64xx_wins[0],
1274         .win[1] = &s3c_fb_data_64xx_wins[1],
1275         .win[2] = &s3c_fb_data_64xx_wins[2],
1276         .win[3] = &s3c_fb_data_64xx_wins[3],
1277         .win[4] = &s3c_fb_data_64xx_wins[4],
1278 };
1279
1280 /* S3C2443/S3C2416 style hardware */
1281 static struct s3c_fb_driverdata s3c_fb_data_s3c2443 __devinitdata = {
1282         .variant = {
1283                 .nr_windows     = 2,
1284                 .is_2443        = 1,
1285
1286                 .vidtcon        = 0x08,
1287                 .wincon         = 0x14,
1288                 .winmap         = 0xd0,
1289                 .keycon         = 0xb0,
1290                 .osd            = 0x28,
1291                 .osd_stride     = 12,
1292                 .buf_start      = 0x64,
1293                 .buf_size       = 0x94,
1294                 .buf_end        = 0x7c,
1295
1296                 .palette = {
1297                         [0] = 0x400,
1298                         [1] = 0x800,
1299                 },
1300         },
1301         .win[0] = &(struct s3c_fb_win_variant) {
1302                 .palette_sz     = 256,
1303                 .valid_bpp      = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24),
1304         },
1305         .win[1] = &(struct s3c_fb_win_variant) {
1306                 .has_osd_c      = 1,
1307                 .palette_sz     = 256,
1308                 .valid_bpp      = (VALID_BPP1248 | VALID_BPP(16) |
1309                                    VALID_BPP(18) | VALID_BPP(19) |
1310                                    VALID_BPP(24) | VALID_BPP(25) |
1311                                    VALID_BPP(28)),
1312         },
1313 };
1314
1315 static struct platform_device_id s3c_fb_driver_ids[] = {
1316         {
1317                 .name           = "s3c-fb",
1318                 .driver_data    = (unsigned long)&s3c_fb_data_64xx,
1319         }, {
1320                 .name           = "s5p-fb",
1321                 .driver_data    = (unsigned long)&s3c_fb_data_s5p,
1322         }, {
1323                 .name           = "s3c2443-fb",
1324                 .driver_data    = (unsigned long)&s3c_fb_data_s3c2443,
1325         },
1326         {},
1327 };
1328 MODULE_DEVICE_TABLE(platform, s3c_fb_driver_ids);
1329
1330 static struct platform_driver s3c_fb_driver = {
1331         .probe          = s3c_fb_probe,
1332         .remove         = __devexit_p(s3c_fb_remove),
1333         .suspend        = s3c_fb_suspend,
1334         .resume         = s3c_fb_resume,
1335         .id_table       = s3c_fb_driver_ids,
1336         .driver         = {
1337                 .name   = "s3c-fb",
1338                 .owner  = THIS_MODULE,
1339         },
1340 };
1341
1342 static int __init s3c_fb_init(void)
1343 {
1344         return platform_driver_register(&s3c_fb_driver);
1345 }
1346
1347 static void __exit s3c_fb_cleanup(void)
1348 {
1349         platform_driver_unregister(&s3c_fb_driver);
1350 }
1351
1352 module_init(s3c_fb_init);
1353 module_exit(s3c_fb_cleanup);
1354
1355 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
1356 MODULE_DESCRIPTION("Samsung S3C SoC Framebuffer driver");
1357 MODULE_LICENSE("GPL");
1358 MODULE_ALIAS("platform:s3c-fb");