drivers/video/omap/omapfb_main.c

   1 /*
   2  * Framebuffer driver for TI OMAP boards
   3  *
   4  * Copyright (C) 2004 Nokia Corporation
   5  * Author: Imre Deak <imre.deak@nokia.com>
   6  *
   7  * Acknowledgements:
   8  *   Alex McMains <aam@ridgerun.com>       - Original driver
   9  *   Juha Yrjola <juha.yrjola@nokia.com>   - Original driver and improvements
  10  *   Dirk Behme <dirk.behme@de.bosch.com>  - changes for 2.6 kernel API
  11  *   Texas Instruments                     - H3 support
  12  *
  13  * This program is free software; you can redistribute it and/or modify it
  14  * under the terms of the GNU General Public License as published by the
  15  * Free Software Foundation; either version 2 of the License, or (at your
  16  * option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful, but
  19  * WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21  * General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License along
  24  * with this program; if not, write to the Free Software Foundation, Inc.,
  25  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26  */
  27 #include <linux/platform_device.h>
  28
  29 #include <asm/uaccess.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/arch/dma.h>
  32 #include <asm/arch/omapfb.h>
  33
  34 #define MODULE_NAME     "omapfb"
  35
  36 static unsigned int     def_accel;
  37 static unsigned long    def_vram[OMAPFB_PLANE_NUM];
  38 static int              def_vram_cnt;
  39 static unsigned long    def_vxres;
  40 static unsigned long    def_vyres;
  41 static unsigned int     def_rotate;
  42 static unsigned int     def_mirror;
  43
  44 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
  45 static int              manual_update = 1;
  46 #else
  47 static int              manual_update;
  48 #endif
  49
  50 static struct platform_device   *fbdev_pdev;
  51 static struct lcd_panel         *fbdev_panel;
  52 static struct omapfb_device     *omapfb_dev;
  53
  54 struct caps_table_struct {
  55         unsigned long flag;
  56         const char *name;
  57 };
  58
  59 static struct caps_table_struct ctrl_caps[] = {
  60         { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" },
  61         { OMAPFB_CAPS_TEARSYNC,      "tearing synchronization" },
  62         { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" },
  63         { OMAPFB_CAPS_PLANE_SCALE,   "scale plane" },
  64         { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" },
  65         { OMAPFB_CAPS_WINDOW_SCALE,  "scale window" },
  66         { OMAPFB_CAPS_WINDOW_OVERLAY,"overlay window" },
  67         { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" },
  68 };
  69
  70 static struct caps_table_struct color_caps[] = {
  71         { 1 << OMAPFB_COLOR_RGB565,     "RGB565", },
  72         { 1 << OMAPFB_COLOR_YUV422,     "YUV422", },
  73         { 1 << OMAPFB_COLOR_YUV420,     "YUV420", },
  74         { 1 << OMAPFB_COLOR_CLUT_8BPP,  "CLUT8", },
  75         { 1 << OMAPFB_COLOR_CLUT_4BPP,  "CLUT4", },
  76         { 1 << OMAPFB_COLOR_CLUT_2BPP,  "CLUT2", },
  77         { 1 << OMAPFB_COLOR_CLUT_1BPP,  "CLUT1", },
  78         { 1 << OMAPFB_COLOR_RGB444,     "RGB444", },
  79         { 1 << OMAPFB_COLOR_YUY422,     "YUY422", },
  80 };
  81
  82 /*
  83  * ---------------------------------------------------------------------------
  84  * LCD panel
  85  * ---------------------------------------------------------------------------
  86  */
  87 extern struct lcd_ctrl omap1_int_ctrl;
  88 extern struct lcd_ctrl omap2_int_ctrl;
  89 extern struct lcd_ctrl hwa742_ctrl;
  90 extern struct lcd_ctrl blizzard_ctrl;
  91
  92 static struct lcd_ctrl *ctrls[] = {
  93 #ifdef CONFIG_ARCH_OMAP1
  94         &omap1_int_ctrl,
  95 #else
  96         &omap2_int_ctrl,
  97 #endif
  98
  99 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
 100         &hwa742_ctrl,
 101 #endif
 102 #ifdef CONFIG_FB_OMAP_LCDC_BLIZZARD
 103         &blizzard_ctrl,
 104 #endif
 105 };
 106
 107 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
 108 #ifdef CONFIG_ARCH_OMAP1
 109 extern struct lcd_ctrl_extif omap1_ext_if;
 110 #else
 111 extern struct lcd_ctrl_extif omap2_ext_if;
 112 #endif
 113 #endif
 114
 115 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
 116 {
 117         mutex_lock(&fbdev->rqueue_mutex);
 118 }
 119
 120 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
 121 {
 122         mutex_unlock(&fbdev->rqueue_mutex);
 123 }
 124
 125 /*
 126  * ---------------------------------------------------------------------------
 127  * LCD controller and LCD DMA
 128  * ---------------------------------------------------------------------------
 129  */
 130 /* Lookup table to map elem size to elem type. */
 131 static const int dma_elem_type[] = {
 132         0,
 133         OMAP_DMA_DATA_TYPE_S8,
 134         OMAP_DMA_DATA_TYPE_S16,
 135         0,
 136         OMAP_DMA_DATA_TYPE_S32,
 137 };
 138
 139 /*
 140  * Allocate resources needed for LCD controller and LCD DMA operations. Video
 141  * memory is allocated from system memory according to the virtual display
 142  * size, except if a bigger memory size is specified explicitly as a kernel
 143  * parameter.
 144  */
 145 static int ctrl_init(struct omapfb_device *fbdev)
 146 {
 147         int r;
 148         int i;
 149
 150         /* kernel/module vram parameters override boot tags/board config */
 151         if (def_vram_cnt) {
 152                 for (i = 0; i < def_vram_cnt; i++)
 153                         fbdev->mem_desc.region[i].size =
 154                                 PAGE_ALIGN(def_vram[i]);
 155                 fbdev->mem_desc.region_cnt = i;
 156         } else {
 157                 struct omapfb_platform_data *conf;
 158
 159                 conf = fbdev->dev->platform_data;
 160                 fbdev->mem_desc = conf->mem_desc;
 161         }
 162
 163         if (!fbdev->mem_desc.region_cnt) {
 164                 struct lcd_panel *panel = fbdev->panel;
 165                 int def_size;
 166                 int bpp = panel->bpp;
 167
 168                 /* 12 bpp is packed in 16 bits */
 169                 if (bpp == 12)
 170                         bpp = 16;
 171                 def_size = def_vxres * def_vyres * bpp / 8;
 172                 fbdev->mem_desc.region_cnt = 1;
 173                 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
 174         }
 175         r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
 176         if (r < 0) {
 177                 dev_err(fbdev->dev, "controller initialization failed (%d)\n", r);
 178                 return r;
 179         }
 180
 181 #ifdef DEBUG
 182         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
 183                 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
 184                          i,
 185                          fbdev->mem_desc.region[i].paddr,
 186                          fbdev->mem_desc.region[i].vaddr,
 187                          fbdev->mem_desc.region[i].size);
 188         }
 189 #endif
 190         return 0;
 191 }
 192
 193 static void ctrl_cleanup(struct omapfb_device *fbdev)
 194 {
 195         fbdev->ctrl->cleanup();
 196 }
 197
 198 /* Must be called with fbdev->rqueue_mutex held. */
 199 static int ctrl_change_mode(struct fb_info *fbi)
 200 {
 201         int r;
 202         unsigned long offset;
 203         struct omapfb_plane_struct *plane = fbi->par;
 204         struct omapfb_device *fbdev = plane->fbdev;
 205         struct fb_var_screeninfo *var = &fbi->var;
 206
 207         offset = var->yoffset * fbi->fix.line_length +
 208                  var->xoffset * var->bits_per_pixel / 8;
 209
 210         if (fbdev->ctrl->sync)
 211                 fbdev->ctrl->sync();
 212         r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
 213                                  offset, var->xres_virtual,
 214                                  plane->info.pos_x, plane->info.pos_y,
 215                                  var->xres, var->yres, plane->color_mode);
 216         if (fbdev->ctrl->set_scale != NULL)
 217                 r = fbdev->ctrl->set_scale(plane->idx,
 218                                    var->xres, var->yres,
 219                                    plane->info.out_width,
 220                                    plane->info.out_height);
 221
 222         return r;
 223 }
 224
 225 /*
 226  * ---------------------------------------------------------------------------
 227  * fbdev framework callbacks and the ioctl interface
 228  * ---------------------------------------------------------------------------
 229  */
 230 /* Called each time the omapfb device is opened */
 231 static int omapfb_open(struct fb_info *info, int user)
 232 {
 233         return 0;
 234 }
 235
 236 static void omapfb_sync(struct fb_info *info);
 237
 238 /* Called when the omapfb device is closed. We make sure that any pending
 239  * gfx DMA operations are ended, before we return. */
 240 static int omapfb_release(struct fb_info *info, int user)
 241 {
 242         omapfb_sync(info);
 243         return 0;
 244 }
 245
 246 /* Store a single color palette entry into a pseudo palette or the hardware
 247  * palette if one is available. For now we support only 16bpp and thus store
 248  * the entry only to the pseudo palette.
 249  */
 250 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
 251                         u_int blue, u_int transp, int update_hw_pal)
 252 {
 253         struct omapfb_plane_struct *plane = info->par;
 254         struct omapfb_device *fbdev = plane->fbdev;
 255         struct fb_var_screeninfo *var = &info->var;
 256         int r = 0;
 257
 258         switch (plane->color_mode) {
 259         case OMAPFB_COLOR_YUV422:
 260         case OMAPFB_COLOR_YUV420:
 261         case OMAPFB_COLOR_YUY422:
 262                 r = -EINVAL;
 263                 break;
 264         case OMAPFB_COLOR_CLUT_8BPP:
 265         case OMAPFB_COLOR_CLUT_4BPP:
 266         case OMAPFB_COLOR_CLUT_2BPP:
 267         case OMAPFB_COLOR_CLUT_1BPP:
 268                 if (fbdev->ctrl->setcolreg)
 269                         r = fbdev->ctrl->setcolreg(regno, red, green, blue,
 270                                                         transp, update_hw_pal);
 271                 /* Fallthrough */
 272         case OMAPFB_COLOR_RGB565:
 273         case OMAPFB_COLOR_RGB444:
 274                 if (r != 0)
 275                         break;
 276
 277                 if (regno < 0) {
 278                         r = -EINVAL;
 279                         break;
 280                 }
 281
 282                 if (regno < 16) {
 283                         u16 pal;
 284                         pal = ((red >> (16 - var->red.length)) <<
 285                                         var->red.offset) |
 286                               ((green >> (16 - var->green.length)) <<
 287                                         var->green.offset) |
 288                               (blue >> (16 - var->blue.length));
 289                         ((u32 *)(info->pseudo_palette))[regno] = pal;
 290                 }
 291                 break;
 292         default:
 293                 BUG();
 294         }
 295         return r;
 296 }
 297
 298 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 299                             u_int transp, struct fb_info *info)
 300 {
 301         return _setcolreg(info, regno, red, green, blue, transp, 1);
 302 }
 303
 304 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
 305 {
 306         int count, index, r;
 307         u16 *red, *green, *blue, *transp;
 308         u16 trans = 0xffff;
 309
 310         red     = cmap->red;
 311         green   = cmap->green;
 312         blue    = cmap->blue;
 313         transp  = cmap->transp;
 314         index   = cmap->start;
 315
 316         for (count = 0; count < cmap->len; count++) {
 317                 if (transp)
 318                         trans = *transp++;
 319                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
 320                                 count == cmap->len - 1);
 321                 if (r != 0)
 322                         return r;
 323         }
 324
 325         return 0;
 326 }
 327
 328 static int omapfb_update_full_screen(struct fb_info *fbi);
 329
 330 static int omapfb_blank(int blank, struct fb_info *fbi)
 331 {
 332         struct omapfb_plane_struct *plane = fbi->par;
 333         struct omapfb_device *fbdev = plane->fbdev;
 334         int do_update = 0;
 335         int r = 0;
 336
 337         omapfb_rqueue_lock(fbdev);
 338         switch (blank) {
 339         case VESA_NO_BLANKING:
 340                 if (fbdev->state == OMAPFB_SUSPENDED) {
 341                         if (fbdev->ctrl->resume)
 342                                 fbdev->ctrl->resume();
 343                         fbdev->panel->enable(fbdev->panel);
 344                         fbdev->state = OMAPFB_ACTIVE;
 345                         if (fbdev->ctrl->get_update_mode() ==
 346                                         OMAPFB_MANUAL_UPDATE)
 347                                 do_update = 1;
 348                 }
 349                 break;
 350         case VESA_POWERDOWN:
 351                 if (fbdev->state == OMAPFB_ACTIVE) {
 352                         fbdev->panel->disable(fbdev->panel);
 353                         if (fbdev->ctrl->suspend)
 354                                 fbdev->ctrl->suspend();
 355                         fbdev->state = OMAPFB_SUSPENDED;
 356                 }
 357                 break;
 358         default:
 359                 r = -EINVAL;
 360         }
 361         omapfb_rqueue_unlock(fbdev);
 362
 363         if (r == 0 && do_update)
 364                 r = omapfb_update_full_screen(fbi);
 365
 366         return r;
 367 }
 368
 369 static void omapfb_sync(struct fb_info *fbi)
 370 {
 371         struct omapfb_plane_struct *plane = fbi->par;
 372         struct omapfb_device *fbdev = plane->fbdev;
 373
 374         omapfb_rqueue_lock(fbdev);
 375         if (fbdev->ctrl->sync)
 376                 fbdev->ctrl->sync();
 377         omapfb_rqueue_unlock(fbdev);
 378 }
 379
 380 /*
 381  * Set fb_info.fix fields and also updates fbdev.
 382  * When calling this fb_info.var must be set up already.
 383  */
 384 static void set_fb_fix(struct fb_info *fbi)
 385 {
 386         struct fb_fix_screeninfo *fix = &fbi->fix;
 387         struct fb_var_screeninfo *var = &fbi->var;
 388         struct omapfb_plane_struct *plane = fbi->par;
 389         struct omapfb_mem_region *rg;
 390         int bpp;
 391
 392         rg = &plane->fbdev->mem_desc.region[plane->idx];
 393         fbi->screen_base        = (char __iomem *)rg->vaddr;
 394         fix->smem_start         = rg->paddr;
 395         fix->smem_len           = rg->size;
 396
 397         fix->type = FB_TYPE_PACKED_PIXELS;
 398         bpp = var->bits_per_pixel;
 399         if (var->nonstd)
 400                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 401         else switch (var->bits_per_pixel) {
 402         case 16:
 403         case 12:
 404                 fix->visual = FB_VISUAL_TRUECOLOR;
 405                 /* 12bpp is stored in 16 bits */
 406                 bpp = 16;
 407                 break;
 408         case 1:
 409         case 2:
 410         case 4:
 411         case 8:
 412                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 413                 break;
 414         }
 415         fix->accel              = FB_ACCEL_OMAP1610;
 416         fix->line_length        = var->xres_virtual * bpp / 8;
 417 }
 418
 419 static int set_color_mode(struct omapfb_plane_struct *plane,
 420                           struct fb_var_screeninfo *var)
 421 {
 422         switch (var->nonstd) {
 423         case 0:
 424                 break;
 425         case OMAPFB_COLOR_YUV422:
 426                 var->bits_per_pixel = 16;
 427                 plane->color_mode = var->nonstd;
 428                 return 0;
 429         case OMAPFB_COLOR_YUV420:
 430                 var->bits_per_pixel = 12;
 431                 plane->color_mode = var->nonstd;
 432                 return 0;
 433         case OMAPFB_COLOR_YUY422:
 434                 var->bits_per_pixel = 16;
 435                 plane->color_mode = var->nonstd;
 436                 return 0;
 437         default:
 438                 return -EINVAL;
 439         }
 440
 441         switch (var->bits_per_pixel) {
 442         case 1:
 443                 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
 444                 return 0;
 445         case 2:
 446                 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
 447                 return 0;
 448         case 4:
 449                 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
 450                 return 0;
 451         case 8:
 452                 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
 453                 return 0;
 454         case 12:
 455                 var->bits_per_pixel = 16;
 456                 plane->color_mode = OMAPFB_COLOR_RGB444;
 457                 return 0;
 458         case 16:
 459                 plane->color_mode = OMAPFB_COLOR_RGB565;
 460                 return 0;
 461         default:
 462                 return -EINVAL;
 463         }
 464 }
 465
 466 /*
 467  * Check the values in var against our capabilities and in case of out of
 468  * bound values try to adjust them.
 469  */
 470 static int set_fb_var(struct fb_info *fbi,
 471                       struct fb_var_screeninfo *var)
 472 {
 473         int             bpp;
 474         unsigned long   max_frame_size;
 475         unsigned long   line_size;
 476         int             xres_min, xres_max;
 477         int             yres_min, yres_max;
 478         struct omapfb_plane_struct *plane = fbi->par;
 479         struct omapfb_device *fbdev = plane->fbdev;
 480         struct lcd_panel *panel = fbdev->panel;
 481
 482         if (set_color_mode(plane, var) < 0)
 483                 return -EINVAL;
 484
 485         bpp = var->bits_per_pixel;
 486         if (plane->color_mode == OMAPFB_COLOR_RGB444)
 487                 bpp = 16;
 488
 489         switch (var->rotate) {
 490         case 0:
 491         case 180:
 492                 xres_min = OMAPFB_PLANE_XRES_MIN;
 493                 xres_max = panel->x_res;
 494                 yres_min = OMAPFB_PLANE_YRES_MIN;
 495                 yres_max = panel->y_res;
 496                 if (cpu_is_omap15xx()) {
 497                         var->xres = panel->x_res;
 498                         var->yres = panel->y_res;
 499                 }
 500                 break;
 501         case 90:
 502         case 270:
 503                 xres_min = OMAPFB_PLANE_YRES_MIN;
 504                 xres_max = panel->y_res;
 505                 yres_min = OMAPFB_PLANE_XRES_MIN;
 506                 yres_max = panel->x_res;
 507                 if (cpu_is_omap15xx()) {
 508                         var->xres = panel->y_res;
 509                         var->yres = panel->x_res;
 510                 }
 511                 break;
 512         default:
 513                 return -EINVAL;
 514         }
 515
 516         if (var->xres < xres_min)
 517                 var->xres = xres_min;
 518         if (var->yres < yres_min)
 519                 var->yres = yres_min;
 520         if (var->xres > xres_max)
 521                 var->xres = xres_max;
 522         if (var->yres > yres_max)
 523                 var->yres = yres_max;
 524
 525         if (var->xres_virtual < var->xres)
 526                 var->xres_virtual = var->xres;
 527         if (var->yres_virtual < var->yres)
 528                 var->yres_virtual = var->yres;
 529         max_frame_size = fbdev->mem_desc.region[plane->idx].size;
 530         line_size = var->xres_virtual * bpp / 8;
 531         if (line_size * var->yres_virtual > max_frame_size) {
 532                 /* Try to keep yres_virtual first */
 533                 line_size = max_frame_size / var->yres_virtual;
 534                 var->xres_virtual = line_size * 8 / bpp;
 535                 if (var->xres_virtual < var->xres) {
 536                         /* Still doesn't fit. Shrink yres_virtual too */
 537                         var->xres_virtual = var->xres;
 538                         line_size = var->xres * bpp / 8;
 539                         var->yres_virtual = max_frame_size / line_size;
 540                 }
 541                 /* Recheck this, as the virtual size changed. */
 542                 if (var->xres_virtual < var->xres)
 543                         var->xres = var->xres_virtual;
 544                 if (var->yres_virtual < var->yres)
 545                         var->yres = var->yres_virtual;
 546                 if (var->xres < xres_min || var->yres < yres_min)
 547                         return -EINVAL;
 548         }
 549         if (var->xres + var->xoffset > var->xres_virtual)
 550                 var->xoffset = var->xres_virtual - var->xres;
 551         if (var->yres + var->yoffset > var->yres_virtual)
 552                 var->yoffset = var->yres_virtual - var->yres;
 553         line_size = var->xres * bpp / 8;
 554
 555         if (plane->color_mode == OMAPFB_COLOR_RGB444) {
 556                 var->red.offset   = 8; var->red.length   = 4;
 557                                                 var->red.msb_right   = 0;
 558                 var->green.offset = 4; var->green.length = 4;
 559                                                 var->green.msb_right = 0;
 560                 var->blue.offset  = 0; var->blue.length  = 4;
 561                                                 var->blue.msb_right  = 0;
 562         } else {
 563                 var->red.offset  = 11; var->red.length   = 5;
 564                                                 var->red.msb_right   = 0;
 565                 var->green.offset= 5;  var->green.length = 6;
 566                                                 var->green.msb_right = 0;
 567                 var->blue.offset = 0;  var->blue.length  = 5;
 568                                                 var->blue.msb_right  = 0;
 569         }
 570
 571         var->height             = -1;
 572         var->width              = -1;
 573         var->grayscale          = 0;
 574
 575         /* pixclock in ps, the rest in pixclock */
 576         var->pixclock           = 10000000 / (panel->pixel_clock / 100);
 577         var->left_margin        = panel->hfp;
 578         var->right_margin       = panel->hbp;
 579         var->upper_margin       = panel->vfp;
 580         var->lower_margin       = panel->vbp;
 581         var->hsync_len          = panel->hsw;
 582         var->vsync_len          = panel->vsw;
 583
 584         /* TODO: get these from panel->config */
 585         var->vmode              = FB_VMODE_NONINTERLACED;
 586         var->sync               = 0;
 587
 588         return 0;
 589 }
 590
 591
 592 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
 593 static void omapfb_rotate(struct fb_info *fbi, int rotate)
 594 {
 595         struct omapfb_plane_struct *plane = fbi->par;
 596         struct omapfb_device *fbdev = plane->fbdev;
 597
 598         omapfb_rqueue_lock(fbdev);
 599         if (cpu_is_omap15xx() && rotate != fbi->var.rotate) {
 600                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 601
 602                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 603                 new_var->rotate = rotate;
 604                 if (set_fb_var(fbi, new_var) == 0 &&
 605                     memcmp(new_var, &fbi->var, sizeof(*new_var))) {
 606                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 607                         ctrl_change_mode(fbi);
 608                 }
 609         }
 610         omapfb_rqueue_unlock(fbdev);
 611 }
 612
 613 /*
 614  * Set new x,y offsets in the virtual display for the visible area and switch
 615  * to the new mode.
 616  */
 617 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 618                                struct fb_info *fbi)
 619 {
 620         struct omapfb_plane_struct *plane = fbi->par;
 621         struct omapfb_device *fbdev = plane->fbdev;
 622         int r = 0;
 623
 624         omapfb_rqueue_lock(fbdev);
 625         if (var->xoffset != fbi->var.xoffset ||
 626             var->yoffset != fbi->var.yoffset) {
 627                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 628
 629                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 630                 new_var->xoffset = var->xoffset;
 631                 new_var->yoffset = var->yoffset;
 632                 if (set_fb_var(fbi, new_var))
 633                         r = -EINVAL;
 634                 else {
 635                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 636                         ctrl_change_mode(fbi);
 637                 }
 638         }
 639         omapfb_rqueue_unlock(fbdev);
 640
 641         return r;
 642 }
 643
 644 /* Set mirror to vertical axis and switch to the new mode. */
 645 static int omapfb_mirror(struct fb_info *fbi, int mirror)
 646 {
 647         struct omapfb_plane_struct *plane = fbi->par;
 648         struct omapfb_device *fbdev = plane->fbdev;
 649         int r = 0;
 650
 651         omapfb_rqueue_lock(fbdev);
 652         mirror = mirror ? 1 : 0;
 653         if (cpu_is_omap15xx())
 654                 r = -EINVAL;
 655         else if (mirror != plane->info.mirror) {
 656                 plane->info.mirror = mirror;
 657                 r = ctrl_change_mode(fbi);
 658         }
 659         omapfb_rqueue_unlock(fbdev);
 660
 661         return r;
 662 }
 663
 664 /*
 665  * Check values in var, try to adjust them in case of out of bound values if
 666  * possible, or return error.
 667  */
 668 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 669 {
 670         struct omapfb_plane_struct *plane = fbi->par;
 671         struct omapfb_device *fbdev = plane->fbdev;
 672         int r;
 673
 674         omapfb_rqueue_lock(fbdev);
 675         if (fbdev->ctrl->sync != NULL)
 676                 fbdev->ctrl->sync();
 677         r = set_fb_var(fbi, var);
 678         omapfb_rqueue_unlock(fbdev);
 679
 680         return r;
 681 }
 682
 683 /*
 684  * Switch to a new mode. The parameters for it has been check already by
 685  * omapfb_check_var.
 686  */
 687 static int omapfb_set_par(struct fb_info *fbi)
 688 {
 689         struct omapfb_plane_struct *plane = fbi->par;
 690         struct omapfb_device *fbdev = plane->fbdev;
 691         int r = 0;
 692
 693         omapfb_rqueue_lock(fbdev);
 694         set_fb_fix(fbi);
 695         r = ctrl_change_mode(fbi);
 696         omapfb_rqueue_unlock(fbdev);
 697
 698         return r;
 699 }
 700
 701 int omapfb_update_window_async(struct fb_info *fbi,
 702                                 struct omapfb_update_window *win,
 703                                 void (*callback)(void *),
 704                                 void *callback_data)
 705 {
 706         struct omapfb_plane_struct *plane = fbi->par;
 707         struct omapfb_device *fbdev = plane->fbdev;
 708         struct fb_var_screeninfo *var;
 709
 710         var = &fbi->var;
 711         if (win->x >= var->xres || win->y >= var->yres ||
 712             win->out_x > var->xres || win->out_y >= var->yres)
 713                 return -EINVAL;
 714
 715         if (!fbdev->ctrl->update_window ||
 716             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 717                 return -ENODEV;
 718
 719         if (win->x + win->width >= var->xres)
 720                 win->width = var->xres - win->x;
 721         if (win->y + win->height >= var->yres)
 722                 win->height = var->yres - win->y;
 723         /* The out sizes should be cropped to the LCD size */
 724         if (win->out_x + win->out_width > fbdev->panel->x_res)
 725                 win->out_width = fbdev->panel->x_res - win->out_x;
 726         if (win->out_y + win->out_height > fbdev->panel->y_res)
 727                 win->out_height = fbdev->panel->y_res - win->out_y;
 728         if (!win->width || !win->height || !win->out_width || !win->out_height)
 729                 return 0;
 730
 731         return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
 732 }
 733 EXPORT_SYMBOL(omapfb_update_window_async);
 734
 735 static int omapfb_update_win(struct fb_info *fbi,
 736                                 struct omapfb_update_window *win)
 737 {
 738         struct omapfb_plane_struct *plane = fbi->par;
 739         int ret;
 740
 741         omapfb_rqueue_lock(plane->fbdev);
 742         ret = omapfb_update_window_async(fbi, win, NULL, 0);
 743         omapfb_rqueue_unlock(plane->fbdev);
 744
 745         return ret;
 746 }
 747
 748 static int omapfb_update_full_screen(struct fb_info *fbi)
 749 {
 750         struct omapfb_plane_struct *plane = fbi->par;
 751         struct omapfb_device *fbdev = plane->fbdev;
 752         struct omapfb_update_window win;
 753         int r;
 754
 755         if (!fbdev->ctrl->update_window ||
 756             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 757                 return -ENODEV;
 758
 759         win.x = 0;
 760         win.y = 0;
 761         win.width = fbi->var.xres;
 762         win.height = fbi->var.yres;
 763         win.out_x = 0;
 764         win.out_y = 0;
 765         win.out_width = fbi->var.xres;
 766         win.out_height = fbi->var.yres;
 767         win.format = 0;
 768
 769         omapfb_rqueue_lock(fbdev);
 770         r = fbdev->ctrl->update_window(fbi, &win, NULL, 0);
 771         omapfb_rqueue_unlock(fbdev);
 772
 773         return r;
 774 }
 775
 776 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 777 {
 778         struct omapfb_plane_struct *plane = fbi->par;
 779         struct omapfb_device *fbdev = plane->fbdev;
 780         struct lcd_panel *panel = fbdev->panel;
 781         struct omapfb_plane_info old_info;
 782         int r = 0;
 783
 784         if (pi->pos_x + pi->out_width > panel->x_res ||
 785             pi->pos_y + pi->out_height > panel->y_res)
 786                 return -EINVAL;
 787
 788         omapfb_rqueue_lock(fbdev);
 789         if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
 790                 /*
 791                  * This plane's memory was freed, can't enable it
 792                  * until it's reallocated.
 793                  */
 794                 r = -EINVAL;
 795                 goto out;
 796         }
 797         old_info = plane->info;
 798         plane->info = *pi;
 799         if (pi->enabled) {
 800                 r = ctrl_change_mode(fbi);
 801                 if (r < 0) {
 802                         plane->info = old_info;
 803                         goto out;
 804                 }
 805         }
 806         r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
 807         if (r < 0) {
 808                 plane->info = old_info;
 809                 goto out;
 810         }
 811 out:
 812         omapfb_rqueue_unlock(fbdev);
 813         return r;
 814 }
 815
 816 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 817 {
 818         struct omapfb_plane_struct *plane = fbi->par;
 819
 820         *pi = plane->info;
 821         return 0;
 822 }
 823
 824 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 825 {
 826         struct omapfb_plane_struct *plane = fbi->par;
 827         struct omapfb_device *fbdev = plane->fbdev;
 828         struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
 829         size_t size;
 830         int r = 0;
 831
 832         if (fbdev->ctrl->setup_mem == NULL)
 833                 return -ENODEV;
 834         if (mi->type > OMAPFB_MEMTYPE_MAX)
 835                 return -EINVAL;
 836
 837         size = PAGE_ALIGN(mi->size);
 838         omapfb_rqueue_lock(fbdev);
 839         if (plane->info.enabled) {
 840                 r = -EBUSY;
 841                 goto out;
 842         }
 843         if (rg->size != size || rg->type != mi->type) {
 844                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 845                 unsigned long old_size = rg->size;
 846                 u8            old_type = rg->type;
 847                 unsigned long paddr;
 848
 849                 rg->size = size;
 850                 rg->type = mi->type;
 851                 /*
 852                  * size == 0 is a special case, for which we
 853                  * don't check / adjust the screen parameters.
 854                  * This isn't a problem since the plane can't
 855                  * be reenabled unless its size is > 0.
 856                  */
 857                 if (old_size != size && size) {
 858                         if (size) {
 859                                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 860                                 r = set_fb_var(fbi, new_var);
 861                                 if (r < 0)
 862                                         goto out;
 863                         }
 864                 }
 865
 866                 if (fbdev->ctrl->sync)
 867                         fbdev->ctrl->sync();
 868                 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
 869                 if (r < 0) {
 870                         /* Revert changes. */
 871                         rg->size = old_size;
 872                         rg->type = old_type;
 873                         goto out;
 874                 }
 875                 rg->paddr = paddr;
 876
 877                 if (old_size != size) {
 878                         if (size) {
 879                                 memcpy(&fbi->var, new_var, sizeof(fbi->var));
 880                                 set_fb_fix(fbi);
 881                         } else {
 882                                 /*
 883                                  * Set these explicitly to indicate that the
 884                                  * plane memory is dealloce'd, the other
 885                                  * screen parameters in var / fix are invalid.
 886                                  */
 887                                 fbi->fix.smem_start = 0;
 888                                 fbi->fix.smem_len = 0;
 889                         }
 890                 }
 891         }
 892 out:
 893         omapfb_rqueue_unlock(fbdev);
 894
 895         return r;
 896 }
 897
 898 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 899 {
 900         struct omapfb_plane_struct *plane = fbi->par;
 901         struct omapfb_device *fbdev = plane->fbdev;
 902         struct omapfb_mem_region *rg;
 903
 904         rg = &fbdev->mem_desc.region[plane->idx];
 905         memset(mi, 0, sizeof(*mi));
 906         mi->size = rg->size;
 907         mi->type = rg->type;
 908
 909         return 0;
 910 }
 911
 912 static int omapfb_set_color_key(struct omapfb_device *fbdev,
 913                                 struct omapfb_color_key *ck)
 914 {
 915         int r;
 916
 917         if (!fbdev->ctrl->set_color_key)
 918                 return -ENODEV;
 919
 920         omapfb_rqueue_lock(fbdev);
 921         r = fbdev->ctrl->set_color_key(ck);
 922         omapfb_rqueue_unlock(fbdev);
 923
 924         return r;
 925 }
 926
 927 static int omapfb_get_color_key(struct omapfb_device *fbdev,
 928                                 struct omapfb_color_key *ck)
 929 {
 930         int r;
 931
 932         if (!fbdev->ctrl->get_color_key)
 933                 return -ENODEV;
 934
 935         omapfb_rqueue_lock(fbdev);
 936         r = fbdev->ctrl->get_color_key(ck);
 937         omapfb_rqueue_unlock(fbdev);
 938
 939         return r;
 940 }
 941
 942 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
 943 static int notifier_inited;
 944
 945 static void omapfb_init_notifier(void)
 946 {
 947         int i;
 948
 949         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
 950                 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
 951 }
 952
 953 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
 954                            omapfb_notifier_callback_t callback,
 955                            void *callback_data)
 956 {
 957         int r;
 958
 959         if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
 960                 return -EINVAL;
 961
 962         if (!notifier_inited) {
 963                 omapfb_init_notifier();
 964                 notifier_inited = 1;
 965         }
 966
 967         omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
 968                                         unsigned long, void *))callback;
 969         omapfb_nb->data = callback_data;
 970         r = blocking_notifier_chain_register(
 971                                 &omapfb_client_list[omapfb_nb->plane_idx],
 972                                 &omapfb_nb->nb);
 973         if (r)
 974                 return r;
 975         if (omapfb_dev != NULL &&
 976             omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
 977                 omapfb_dev->ctrl->bind_client(omapfb_nb);
 978         }
 979
 980         return 0;
 981 }
 982 EXPORT_SYMBOL(omapfb_register_client);
 983
 984 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
 985 {
 986         return blocking_notifier_chain_unregister(
 987                 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
 988 }
 989 EXPORT_SYMBOL(omapfb_unregister_client);
 990
 991 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
 992 {
 993         int i;
 994
 995         if (!notifier_inited)
 996                 /* no client registered yet */
 997                 return;
 998
 999         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1000                 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1001                                     fbdev->fb_info[i]);
1002 }
1003 EXPORT_SYMBOL(omapfb_notify_clients);
1004
1005 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1006                                    enum omapfb_update_mode mode)
1007 {
1008         int r;
1009
1010         omapfb_rqueue_lock(fbdev);
1011         r = fbdev->ctrl->set_update_mode(mode);
1012         omapfb_rqueue_unlock(fbdev);
1013
1014         return r;
1015 }
1016
1017 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1018 {
1019         int r;
1020
1021         omapfb_rqueue_lock(fbdev);
1022         r = fbdev->ctrl->get_update_mode();
1023         omapfb_rqueue_unlock(fbdev);
1024
1025         return r;
1026 }
1027
1028 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1029                                      struct omapfb_caps *caps)
1030 {
1031         memset(caps, 0, sizeof(*caps));
1032         fbdev->ctrl->get_caps(plane, caps);
1033         caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1034 }
1035
1036 /* For lcd testing */
1037 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1038 {
1039         omapfb_rqueue_lock(fbdev);
1040         *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1041         if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1042                 struct omapfb_update_window win;
1043
1044                 memset(&win, 0, sizeof(win));
1045                 win.width = 2;
1046                 win.height = 2;
1047                 win.out_width = 2;
1048                 win.out_height = 2;
1049                 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, 0);
1050         }
1051         omapfb_rqueue_unlock(fbdev);
1052 }
1053 EXPORT_SYMBOL(omapfb_write_first_pixel);
1054
1055 /*
1056  * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1057  * here to be accessible by user mode code.
1058  */
1059 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1060                         unsigned long arg)
1061 {
1062         struct omapfb_plane_struct *plane = fbi->par;
1063         struct omapfb_device    *fbdev = plane->fbdev;
1064         struct fb_ops           *ops = fbi->fbops;
1065         union {
1066                 struct omapfb_update_window     update_window;
1067                 struct omapfb_plane_info        plane_info;
1068                 struct omapfb_mem_info          mem_info;
1069                 struct omapfb_color_key         color_key;
1070                 enum omapfb_update_mode         update_mode;
1071                 struct omapfb_caps              caps;
1072                 unsigned int            mirror;
1073                 int                     plane_out;
1074                 int                     enable_plane;
1075         } p;
1076         int r = 0;
1077
1078         BUG_ON(!ops);
1079         switch (cmd)
1080         {
1081         case OMAPFB_MIRROR:
1082                 if (get_user(p.mirror, (int __user *)arg))
1083                         r = -EFAULT;
1084                 else
1085                         omapfb_mirror(fbi, p.mirror);
1086                 break;
1087         case OMAPFB_SYNC_GFX:
1088                 omapfb_sync(fbi);
1089                 break;
1090         case OMAPFB_VSYNC:
1091                 break;
1092         case OMAPFB_SET_UPDATE_MODE:
1093                 if (get_user(p.update_mode, (int __user *)arg))
1094                         r = -EFAULT;
1095                 else
1096                         r = omapfb_set_update_mode(fbdev, p.update_mode);
1097                 break;
1098         case OMAPFB_GET_UPDATE_MODE:
1099                 p.update_mode = omapfb_get_update_mode(fbdev);
1100                 if (put_user(p.update_mode,
1101                                         (enum omapfb_update_mode __user *)arg))
1102                         r = -EFAULT;
1103                 break;
1104         case OMAPFB_UPDATE_WINDOW_OLD:
1105                 if (copy_from_user(&p.update_window, (void __user *)arg,
1106                                    sizeof(struct omapfb_update_window_old)))
1107                         r = -EFAULT;
1108                 else {
1109                         struct omapfb_update_window *u = &p.update_window;
1110                         u->out_x = u->x;
1111                         u->out_y = u->y;
1112                         u->out_width = u->width;
1113                         u->out_height = u->height;
1114                         memset(u->reserved, 0, sizeof(u->reserved));
1115                         r = omapfb_update_win(fbi, u);
1116                 }
1117                 break;
1118         case OMAPFB_UPDATE_WINDOW:
1119                 if (copy_from_user(&p.update_window, (void __user *)arg,
1120                                    sizeof(p.update_window)))
1121                         r = -EFAULT;
1122                 else
1123                         r = omapfb_update_win(fbi, &p.update_window);
1124                 break;
1125         case OMAPFB_SETUP_PLANE:
1126                 if (copy_from_user(&p.plane_info, (void __user *)arg,
1127                                    sizeof(p.plane_info)))
1128                         r = -EFAULT;
1129                 else
1130                         r = omapfb_setup_plane(fbi, &p.plane_info);
1131                 break;
1132         case OMAPFB_QUERY_PLANE:
1133                 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1134                         break;
1135                 if (copy_to_user((void __user *)arg, &p.plane_info,
1136                                    sizeof(p.plane_info)))
1137                         r = -EFAULT;
1138                 break;
1139         case OMAPFB_SETUP_MEM:
1140                 if (copy_from_user(&p.mem_info, (void __user *)arg,
1141                                    sizeof(p.mem_info)))
1142                         r = -EFAULT;
1143                 else
1144                         r = omapfb_setup_mem(fbi, &p.mem_info);
1145                 break;
1146         case OMAPFB_QUERY_MEM:
1147                 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1148                         break;
1149                 if (copy_to_user((void __user *)arg, &p.mem_info,
1150                                    sizeof(p.mem_info)))
1151                         r = -EFAULT;
1152                 break;
1153         case OMAPFB_SET_COLOR_KEY:
1154                 if (copy_from_user(&p.color_key, (void __user *)arg,
1155                                    sizeof(p.color_key)))
1156                         r = -EFAULT;
1157                 else
1158                         r = omapfb_set_color_key(fbdev, &p.color_key);
1159                 break;
1160         case OMAPFB_GET_COLOR_KEY:
1161                 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1162                         break;
1163                 if (copy_to_user((void __user *)arg, &p.color_key,
1164                                  sizeof(p.color_key)))
1165                         r = -EFAULT;
1166                 break;
1167         case OMAPFB_GET_CAPS:
1168                 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1169                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1170                         r = -EFAULT;
1171                 break;
1172         case OMAPFB_LCD_TEST:
1173                 {
1174                         int test_num;
1175
1176                         if (get_user(test_num, (int __user *)arg)) {
1177                                 r = -EFAULT;
1178                                 break;
1179                         }
1180                         if (!fbdev->panel->run_test) {
1181                                 r = -EINVAL;
1182                                 break;
1183                         }
1184                         r = fbdev->panel->run_test(fbdev->panel, test_num);
1185                         break;
1186                 }
1187         case OMAPFB_CTRL_TEST:
1188                 {
1189                         int test_num;
1190
1191                         if (get_user(test_num, (int __user *)arg)) {
1192                                 r = -EFAULT;
1193                                 break;
1194                         }
1195                         if (!fbdev->ctrl->run_test) {
1196                                 r = -EINVAL;
1197                                 break;
1198                         }
1199                         r = fbdev->ctrl->run_test(test_num);
1200                         break;
1201                 }
1202         default:
1203                 r = -EINVAL;
1204         }
1205
1206         return r;
1207 }
1208
1209 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1210 {
1211         struct omapfb_plane_struct *plane = info->par;
1212         struct omapfb_device *fbdev = plane->fbdev;
1213         int r;
1214
1215         omapfb_rqueue_lock(fbdev);
1216         r = fbdev->ctrl->mmap(info, vma);
1217         omapfb_rqueue_unlock(fbdev);
1218
1219         return r;
1220 }
1221
1222 /*
1223  * Callback table for the frame buffer framework. Some of these pointers
1224  * will be changed according to the current setting of fb_info->accel_flags.
1225  */
1226 static struct fb_ops omapfb_ops = {
1227         .owner          = THIS_MODULE,
1228         .fb_open        = omapfb_open,
1229         .fb_release     = omapfb_release,
1230         .fb_setcolreg   = omapfb_setcolreg,
1231         .fb_setcmap     = omapfb_setcmap,
1232         .fb_fillrect    = cfb_fillrect,
1233         .fb_copyarea    = cfb_copyarea,
1234         .fb_imageblit   = cfb_imageblit,
1235         .fb_blank       = omapfb_blank,
1236         .fb_ioctl       = omapfb_ioctl,
1237         .fb_check_var   = omapfb_check_var,
1238         .fb_set_par     = omapfb_set_par,
1239         .fb_rotate      = omapfb_rotate,
1240         .fb_pan_display = omapfb_pan_display,
1241 };
1242
1243 /*
1244  * ---------------------------------------------------------------------------
1245  * Sysfs interface
1246  * ---------------------------------------------------------------------------
1247  */
1248 /* omapfbX sysfs entries */
1249 static ssize_t omapfb_show_caps_num(struct device *dev,
1250                                     struct device_attribute *attr, char *buf)
1251 {
1252         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1253         int plane;
1254         size_t size;
1255         struct omapfb_caps caps;
1256
1257         plane = 0;
1258         size = 0;
1259         while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1260                 omapfb_get_caps(fbdev, plane, &caps);
1261                 size += snprintf(&buf[size], PAGE_SIZE - size,
1262                         "plane#%d %#010x %#010x %#010x\n",
1263                         plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1264                 plane++;
1265         }
1266         return size;
1267 }
1268
1269 static ssize_t omapfb_show_caps_text(struct device *dev,
1270                                      struct device_attribute *attr, char *buf)
1271 {
1272         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1273         int i;
1274         struct omapfb_caps caps;
1275         int plane;
1276         size_t size;
1277
1278         plane = 0;
1279         size = 0;
1280         while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1281                 omapfb_get_caps(fbdev, plane, &caps);
1282                 size += snprintf(&buf[size], PAGE_SIZE - size,
1283                                  "plane#%d:\n", plane);
1284                 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1285                      size < PAGE_SIZE; i++) {
1286                         if (ctrl_caps[i].flag & caps.ctrl)
1287                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1288                                         " %s\n", ctrl_caps[i].name);
1289                 }
1290                 size += snprintf(&buf[size], PAGE_SIZE - size,
1291                                  " plane colors:\n");
1292                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1293                      size < PAGE_SIZE; i++) {
1294                         if (color_caps[i].flag & caps.plane_color)
1295                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1296                                         "  %s\n", color_caps[i].name);
1297                 }
1298                 size += snprintf(&buf[size], PAGE_SIZE - size,
1299                                  " window colors:\n");
1300                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1301                      size < PAGE_SIZE; i++) {
1302                         if (color_caps[i].flag & caps.wnd_color)
1303                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1304                                         "  %s\n", color_caps[i].name);
1305                 }
1306
1307                 plane++;
1308         }
1309         return size;
1310 }
1311
1312 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1313 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1314
1315 /* panel sysfs entries */
1316 static ssize_t omapfb_show_panel_name(struct device *dev,
1317                                       struct device_attribute *attr, char *buf)
1318 {
1319         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1320
1321         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1322 }
1323
1324 static ssize_t omapfb_show_bklight_level(struct device *dev,
1325                                          struct device_attribute *attr,
1326                                          char *buf)
1327 {
1328         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1329         int r;
1330
1331         if (fbdev->panel->get_bklight_level) {
1332                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1333                              fbdev->panel->get_bklight_level(fbdev->panel));
1334         } else
1335                 r = -ENODEV;
1336         return r;
1337 }
1338
1339 static ssize_t omapfb_store_bklight_level(struct device *dev,
1340                                           struct device_attribute *attr,
1341                                           const char *buf, size_t size)
1342 {
1343         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1344         int r;
1345
1346         if (fbdev->panel->set_bklight_level) {
1347                 unsigned int level;
1348
1349                 if (sscanf(buf, "%10d", &level) == 1) {
1350                         r = fbdev->panel->set_bklight_level(fbdev->panel, level);
1351                 } else
1352                         r = -EINVAL;
1353         } else
1354                 r = -ENODEV;
1355         return r ? r : size;
1356 }
1357
1358 static ssize_t omapfb_show_bklight_max(struct device *dev,
1359                                        struct device_attribute *attr, char *buf)
1360 {
1361         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1362         int r;
1363
1364         if (fbdev->panel->get_bklight_level) {
1365                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1366                              fbdev->panel->get_bklight_max(fbdev->panel));
1367         } else
1368                 r = -ENODEV;
1369         return r;
1370 }
1371
1372 static struct device_attribute dev_attr_panel_name =
1373         __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1374 static DEVICE_ATTR(backlight_level, 0664,
1375                    omapfb_show_bklight_level, omapfb_store_bklight_level);
1376 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1377
1378 static struct attribute *panel_attrs[] = {
1379         &dev_attr_panel_name.attr,
1380         &dev_attr_backlight_level.attr,
1381         &dev_attr_backlight_max.attr,
1382         NULL,
1383 };
1384
1385 static struct attribute_group panel_attr_grp = {
1386         .name  = "panel",
1387         .attrs = panel_attrs,
1388 };
1389
1390 /* ctrl sysfs entries */
1391 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1392                                      struct device_attribute *attr, char *buf)
1393 {
1394         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1395
1396         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1397 }
1398
1399 static struct device_attribute dev_attr_ctrl_name =
1400         __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1401
1402 static struct attribute *ctrl_attrs[] = {
1403         &dev_attr_ctrl_name.attr,
1404         NULL,
1405 };
1406
1407 static struct attribute_group ctrl_attr_grp = {
1408         .name  = "ctrl",
1409         .attrs = ctrl_attrs,
1410 };
1411
1412 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1413 {
1414         int r;
1415
1416         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1417                 goto fail0;
1418
1419         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1420                 goto fail1;
1421
1422         if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1423                 goto fail2;
1424
1425         if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1426                 goto fail3;
1427
1428         return 0;
1429 fail3:
1430         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1431 fail2:
1432         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1433 fail1:
1434         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1435 fail0:
1436         dev_err(fbdev->dev, "unable to register sysfs interface\n");
1437         return r;
1438 }
1439
1440 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1441 {
1442         sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1443         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1444         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1445         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1446 }
1447
1448 /*
1449  * ---------------------------------------------------------------------------
1450  * LDM callbacks
1451  * ---------------------------------------------------------------------------
1452  */
1453 /* Initialize system fb_info object and set the default video mode.
1454  * The frame buffer memory already allocated by lcddma_init
1455  */
1456 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1457 {
1458         struct fb_var_screeninfo        *var = &info->var;
1459         struct fb_fix_screeninfo        *fix = &info->fix;
1460         int                             r = 0;
1461
1462         info->fbops = &omapfb_ops;
1463         info->flags = FBINFO_FLAG_DEFAULT;
1464
1465         strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1466
1467         info->pseudo_palette = fbdev->pseudo_palette;
1468
1469         var->accel_flags  = def_accel ? FB_ACCELF_TEXT : 0;
1470         var->xres = def_vxres;
1471         var->yres = def_vyres;
1472         var->xres_virtual = def_vxres;
1473         var->yres_virtual = def_vyres;
1474         var->rotate       = def_rotate;
1475         var->bits_per_pixel = fbdev->panel->bpp;
1476
1477         set_fb_var(info, var);
1478         set_fb_fix(info);
1479
1480         r = fb_alloc_cmap(&info->cmap, 16, 0);
1481         if (r != 0)
1482                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1483
1484         return r;
1485 }
1486
1487 /* Release the fb_info object */
1488 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1489 {
1490         fb_dealloc_cmap(&fbi->cmap);
1491 }
1492
1493 static void planes_cleanup(struct omapfb_device *fbdev)
1494 {
1495         int i;
1496
1497         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1498                 if (fbdev->fb_info[i] == NULL)
1499                         break;
1500                 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1501                 framebuffer_release(fbdev->fb_info[i]);
1502         }
1503 }
1504
1505 static int planes_init(struct omapfb_device *fbdev)
1506 {
1507         struct fb_info *fbi;
1508         int i;
1509         int r;
1510
1511         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1512                 struct omapfb_plane_struct *plane;
1513                 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1514                                         fbdev->dev);
1515                 if (fbi == NULL) {
1516                         dev_err(fbdev->dev,
1517                                 "unable to allocate memory for plane info\n");
1518                         planes_cleanup(fbdev);
1519                         return -ENOMEM;
1520                 }
1521                 plane = fbi->par;
1522                 plane->idx = i;
1523                 plane->fbdev = fbdev;
1524                 plane->info.mirror = def_mirror;
1525                 fbdev->fb_info[i] = fbi;
1526
1527                 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1528                         framebuffer_release(fbi);
1529                         planes_cleanup(fbdev);
1530                         return r;
1531                 }
1532                 plane->info.out_width = fbi->var.xres;
1533                 plane->info.out_height = fbi->var.yres;
1534         }
1535         return 0;
1536 }
1537
1538 /*
1539  * Free driver resources. Can be called to rollback an aborted initialization
1540  * sequence.
1541  */
1542 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1543 {
1544         int i;
1545
1546         switch (state) {
1547         case OMAPFB_ACTIVE:
1548                 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1549                         unregister_framebuffer(fbdev->fb_info[i]);
1550         case 7:
1551                 omapfb_unregister_sysfs(fbdev);
1552         case 6:
1553                 fbdev->panel->disable(fbdev->panel);
1554         case 5:
1555                 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1556         case 4:
1557                 planes_cleanup(fbdev);
1558         case 3:
1559                 ctrl_cleanup(fbdev);
1560         case 2:
1561                 fbdev->panel->cleanup(fbdev->panel);
1562         case 1:
1563                 dev_set_drvdata(fbdev->dev, NULL);
1564                 kfree(fbdev);
1565         case 0:
1566                 /* nothing to free */
1567                 break;
1568         default:
1569                 BUG();
1570         }
1571 }
1572
1573 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1574 {
1575         struct omapfb_platform_data *conf;
1576         char name[17];
1577         int i;
1578
1579         conf = fbdev->dev->platform_data;
1580
1581         fbdev->ctrl = NULL;
1582
1583         strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1584         name[sizeof(name) - 1] = '\0';
1585
1586         if (strcmp(name, "internal") == 0) {
1587                 fbdev->ctrl = fbdev->int_ctrl;
1588                 return 0;
1589         }
1590
1591         for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1592                 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1593                 if (strcmp(ctrls[i]->name, name) == 0) {
1594                         fbdev->ctrl = ctrls[i];
1595                         break;
1596                 }
1597         }
1598
1599         if (fbdev->ctrl == NULL) {
1600                 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1601                 return -1;
1602         }
1603
1604         return 0;
1605 }
1606
1607 static void check_required_callbacks(struct omapfb_device *fbdev)
1608 {
1609 #define _C(x) (fbdev->ctrl->x != NULL)
1610 #define _P(x) (fbdev->panel->x != NULL)
1611         BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1612         BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1613                  _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1614                  _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1615                  _P(get_caps)));
1616 #undef _P
1617 #undef _C
1618 }
1619
1620 /*
1621  * Called by LDM binding to probe and attach a new device.
1622  * Initialization sequence:
1623  *   1. allocate system omapfb_device structure
1624  *   2. select controller type according to platform configuration
1625  *      init LCD panel
1626  *   3. init LCD controller and LCD DMA
1627  *   4. init system fb_info structure for all planes
1628  *   5. setup video mode for first plane and enable it
1629  *   6. enable LCD panel
1630  *   7. register sysfs attributes
1631  *   OMAPFB_ACTIVE: register system fb_info structure for all planes
1632  */
1633 static int omapfb_do_probe(struct platform_device *pdev, struct lcd_panel *panel)
1634 {
1635         struct omapfb_device    *fbdev = NULL;
1636         int                     init_state;
1637         unsigned long           phz, hhz, vhz;
1638         unsigned long           vram;
1639         int                     i;
1640         int                     r = 0;
1641
1642         init_state = 0;
1643
1644         if (pdev->num_resources != 0) {
1645                 dev_err(&pdev->dev, "probed for an unknown device\n");
1646                 r = -ENODEV;
1647                 goto cleanup;
1648         }
1649
1650         if (pdev->dev.platform_data == NULL) {
1651                 dev_err(&pdev->dev, "missing platform data\n");
1652                 r = -ENOENT;
1653                 goto cleanup;
1654         }
1655
1656         fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1657         if (fbdev == NULL) {
1658                 dev_err(&pdev->dev,
1659                         "unable to allocate memory for device info\n");
1660                 r = -ENOMEM;
1661                 goto cleanup;
1662         }
1663         init_state++;
1664
1665         fbdev->dev = &pdev->dev;
1666         fbdev->panel = panel;
1667         platform_set_drvdata(pdev, fbdev);
1668
1669         mutex_init(&fbdev->rqueue_mutex);
1670
1671 #ifdef CONFIG_ARCH_OMAP1
1672         fbdev->int_ctrl = &omap1_int_ctrl;
1673 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1674         fbdev->ext_if = &omap1_ext_if;
1675 #endif
1676 #else   /* OMAP2 */
1677         fbdev->int_ctrl = &omap2_int_ctrl;
1678 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1679         fbdev->ext_if = &omap2_ext_if;
1680 #endif
1681 #endif
1682         if (omapfb_find_ctrl(fbdev) < 0) {
1683                 dev_err(fbdev->dev,
1684                         "LCD controller not found, board not supported\n");
1685                 r = -ENODEV;
1686                 goto cleanup;
1687         }
1688
1689         r = fbdev->panel->init(fbdev->panel, fbdev);
1690         if (r)
1691                 goto cleanup;
1692
1693         pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1694
1695         def_vxres = def_vxres ? : fbdev->panel->x_res;
1696         def_vyres = def_vyres ? : fbdev->panel->y_res;
1697
1698         init_state++;
1699
1700         r = ctrl_init(fbdev);
1701         if (r)
1702                 goto cleanup;
1703         if (fbdev->ctrl->mmap != NULL)
1704                 omapfb_ops.fb_mmap = omapfb_mmap;
1705         init_state++;
1706
1707         check_required_callbacks(fbdev);
1708
1709         r = planes_init(fbdev);
1710         if (r)
1711                 goto cleanup;
1712         init_state++;
1713
1714 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1715         /* Set DMA priority for EMIFF access to highest */
1716         if (cpu_class_is_omap1())
1717                 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1718 #endif
1719
1720         r = ctrl_change_mode(fbdev->fb_info[0]);
1721         if (r) {
1722                 dev_err(fbdev->dev, "mode setting failed\n");
1723                 goto cleanup;
1724         }
1725
1726         /* GFX plane is enabled by default */
1727         r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1728         if (r)
1729                 goto cleanup;
1730
1731         omapfb_set_update_mode(fbdev, manual_update ?
1732                                    OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1733         init_state++;
1734
1735         r = fbdev->panel->enable(fbdev->panel);
1736         if (r)
1737                 goto cleanup;
1738         init_state++;
1739
1740         r = omapfb_register_sysfs(fbdev);
1741         if (r)
1742                 goto cleanup;
1743         init_state++;
1744
1745         vram = 0;
1746         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1747                 r = register_framebuffer(fbdev->fb_info[i]);
1748                 if (r != 0) {
1749                         dev_err(fbdev->dev,
1750                                 "registering framebuffer %d failed\n", i);
1751                         goto cleanup;
1752                 }
1753                 vram += fbdev->mem_desc.region[i].size;
1754         }
1755
1756         fbdev->state = OMAPFB_ACTIVE;
1757
1758         panel = fbdev->panel;
1759         phz = panel->pixel_clock * 1000;
1760         hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1761         vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1762
1763         omapfb_dev = fbdev;
1764
1765         pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1766                         vram, fbdev->mem_desc.region_cnt);
1767         pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1768                         "vfreq %lu.%lu Hz\n",
1769                         phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1770
1771         return 0;
1772
1773 cleanup:
1774         omapfb_free_resources(fbdev, init_state);
1775
1776         return r;
1777 }
1778
1779 static int omapfb_probe(struct platform_device *pdev)
1780 {
1781         BUG_ON(fbdev_pdev != NULL);
1782
1783         /* Delay actual initialization until the LCD is registered */
1784         fbdev_pdev = pdev;
1785         if (fbdev_panel != NULL)
1786                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1787         return 0;
1788 }
1789
1790 void omapfb_register_panel(struct lcd_panel *panel)
1791 {
1792         BUG_ON(fbdev_panel != NULL);
1793
1794         fbdev_panel = panel;
1795         if (fbdev_pdev != NULL)
1796                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1797 }
1798
1799 /* Called when the device is being detached from the driver */
1800 static int omapfb_remove(struct platform_device *pdev)
1801 {
1802         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1803         enum omapfb_state saved_state = fbdev->state;
1804
1805         /* FIXME: wait till completion of pending events */
1806
1807         fbdev->state = OMAPFB_DISABLED;
1808         omapfb_free_resources(fbdev, saved_state);
1809
1810         return 0;
1811 }
1812
1813 /* PM suspend */
1814 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1815 {
1816         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1817
1818         omapfb_blank(VESA_POWERDOWN, fbdev->fb_info[0]);
1819
1820         return 0;
1821 }
1822
1823 /* PM resume */
1824 static int omapfb_resume(struct platform_device *pdev)
1825 {
1826         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1827
1828         omapfb_blank(VESA_NO_BLANKING, fbdev->fb_info[0]);
1829         return 0;
1830 }
1831
1832 static struct platform_driver omapfb_driver = {
1833         .probe          = omapfb_probe,
1834         .remove         = omapfb_remove,
1835         .suspend        = omapfb_suspend,
1836         .resume         = omapfb_resume,
1837         .driver         = {
1838                 .name   = MODULE_NAME,
1839                 .owner  = THIS_MODULE,
1840         },
1841 };
1842
1843 #ifndef MODULE
1844
1845 /* Process kernel command line parameters */
1846 static int __init omapfb_setup(char *options)
1847 {
1848         char *this_opt = NULL;
1849         int r = 0;
1850
1851         pr_debug("omapfb: options %s\n", options);
1852
1853         if (!options || !*options)
1854                 return 0;
1855
1856         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1857                 if (!strncmp(this_opt, "accel", 5))
1858                         def_accel = 1;
1859                 else if (!strncmp(this_opt, "vram:", 5)) {
1860                         char *suffix;
1861                         unsigned long vram;
1862                         vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1863                         switch (suffix[0]) {
1864                         case '\0':
1865                                 break;
1866                         case 'm':
1867                         case 'M':
1868                                 vram *= 1024;
1869                                 /* Fall through */
1870                         case 'k':
1871                         case 'K':
1872                                 vram *= 1024;
1873                                 break;
1874                         default:
1875                                 pr_debug("omapfb: invalid vram suffix %c\n",
1876                                          suffix[0]);
1877                                 r = -1;
1878                         }
1879                         def_vram[def_vram_cnt++] = vram;
1880                 }
1881                 else if (!strncmp(this_opt, "vxres:", 6))
1882                         def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1883                 else if (!strncmp(this_opt, "vyres:", 6))
1884                         def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1885                 else if (!strncmp(this_opt, "rotate:", 7))
1886                         def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1887                 else if (!strncmp(this_opt, "mirror:", 7))
1888                         def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1889                 else if (!strncmp(this_opt, "manual_update", 13))
1890                         manual_update = 1;
1891                 else {
1892                         pr_debug("omapfb: invalid option\n");
1893                         r = -1;
1894                 }
1895         }
1896
1897         return r;
1898 }
1899
1900 #endif
1901
1902 /* Register both the driver and the device */
1903 static int __init omapfb_init(void)
1904 {
1905 #ifndef MODULE
1906         char *option;
1907
1908         if (fb_get_options("omapfb", &option))
1909                 return -ENODEV;
1910         omapfb_setup(option);
1911 #endif
1912         /* Register the driver with LDM */
1913         if (platform_driver_register(&omapfb_driver)) {
1914                 pr_debug("failed to register omapfb driver\n");
1915                 return -ENODEV;
1916         }
1917
1918         return 0;
1919 }
1920
1921 static void __exit omapfb_cleanup(void)
1922 {
1923         platform_driver_unregister(&omapfb_driver);
1924 }
1925
1926 module_param_named(accel, def_accel, uint, 0664);
1927 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1928 module_param_named(vxres, def_vxres, long, 0664);
1929 module_param_named(vyres, def_vyres, long, 0664);
1930 module_param_named(rotate, def_rotate, uint, 0664);
1931 module_param_named(mirror, def_mirror, uint, 0664);
1932 module_param_named(manual_update, manual_update, bool, 0664);
1933
1934 module_init(omapfb_init);
1935 module_exit(omapfb_cleanup);
1936
1937 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1938 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1939 MODULE_LICENSE("GPL");