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 #include <linux/uaccess.h>
  29
  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",
 178                         r);
 179                 return r;
 180         }
 181
 182 #ifdef DEBUG
 183         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
 184                 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
 185                          i,
 186                          fbdev->mem_desc.region[i].paddr,
 187                          fbdev->mem_desc.region[i].vaddr,
 188                          fbdev->mem_desc.region[i].size);
 189         }
 190 #endif
 191         return 0;
 192 }
 193
 194 static void ctrl_cleanup(struct omapfb_device *fbdev)
 195 {
 196         fbdev->ctrl->cleanup();
 197 }
 198
 199 /* Must be called with fbdev->rqueue_mutex held. */
 200 static int ctrl_change_mode(struct fb_info *fbi)
 201 {
 202         int r;
 203         unsigned long offset;
 204         struct omapfb_plane_struct *plane = fbi->par;
 205         struct omapfb_device *fbdev = plane->fbdev;
 206         struct fb_var_screeninfo *var = &fbi->var;
 207
 208         offset = var->yoffset * fbi->fix.line_length +
 209                  var->xoffset * var->bits_per_pixel / 8;
 210
 211         if (fbdev->ctrl->sync)
 212                 fbdev->ctrl->sync();
 213         r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
 214                                  offset, var->xres_virtual,
 215                                  plane->info.pos_x, plane->info.pos_y,
 216                                  var->xres, var->yres, plane->color_mode);
 217         if (fbdev->ctrl->set_scale != NULL)
 218                 r = fbdev->ctrl->set_scale(plane->idx,
 219                                    var->xres, var->yres,
 220                                    plane->info.out_width,
 221                                    plane->info.out_height);
 222
 223         return r;
 224 }
 225
 226 /*
 227  * ---------------------------------------------------------------------------
 228  * fbdev framework callbacks and the ioctl interface
 229  * ---------------------------------------------------------------------------
 230  */
 231 /* Called each time the omapfb device is opened */
 232 static int omapfb_open(struct fb_info *info, int user)
 233 {
 234         return 0;
 235 }
 236
 237 static void omapfb_sync(struct fb_info *info);
 238
 239 /* Called when the omapfb device is closed. We make sure that any pending
 240  * gfx DMA operations are ended, before we return. */
 241 static int omapfb_release(struct fb_info *info, int user)
 242 {
 243         omapfb_sync(info);
 244         return 0;
 245 }
 246
 247 /* Store a single color palette entry into a pseudo palette or the hardware
 248  * palette if one is available. For now we support only 16bpp and thus store
 249  * the entry only to the pseudo palette.
 250  */
 251 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
 252                         u_int blue, u_int transp, int update_hw_pal)
 253 {
 254         struct omapfb_plane_struct *plane = info->par;
 255         struct omapfb_device *fbdev = plane->fbdev;
 256         struct fb_var_screeninfo *var = &info->var;
 257         int r = 0;
 258
 259         switch (plane->color_mode) {
 260         case OMAPFB_COLOR_YUV422:
 261         case OMAPFB_COLOR_YUV420:
 262         case OMAPFB_COLOR_YUY422:
 263                 r = -EINVAL;
 264                 break;
 265         case OMAPFB_COLOR_CLUT_8BPP:
 266         case OMAPFB_COLOR_CLUT_4BPP:
 267         case OMAPFB_COLOR_CLUT_2BPP:
 268         case OMAPFB_COLOR_CLUT_1BPP:
 269                 if (fbdev->ctrl->setcolreg)
 270                         r = fbdev->ctrl->setcolreg(regno, red, green, blue,
 271                                                         transp, update_hw_pal);
 272                 /* Fallthrough */
 273         case OMAPFB_COLOR_RGB565:
 274         case OMAPFB_COLOR_RGB444:
 275                 if (r != 0)
 276                         break;
 277
 278                 if (regno < 0) {
 279                         r = -EINVAL;
 280                         break;
 281                 }
 282
 283                 if (regno < 16) {
 284                         u16 pal;
 285                         pal = ((red >> (16 - var->red.length)) <<
 286                                         var->red.offset) |
 287                               ((green >> (16 - var->green.length)) <<
 288                                         var->green.offset) |
 289                               (blue >> (16 - var->blue.length));
 290                         ((u32 *)(info->pseudo_palette))[regno] = pal;
 291                 }
 292                 break;
 293         default:
 294                 BUG();
 295         }
 296         return r;
 297 }
 298
 299 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 300                             u_int transp, struct fb_info *info)
 301 {
 302         return _setcolreg(info, regno, red, green, blue, transp, 1);
 303 }
 304
 305 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
 306 {
 307         int count, index, r;
 308         u16 *red, *green, *blue, *transp;
 309         u16 trans = 0xffff;
 310
 311         red     = cmap->red;
 312         green   = cmap->green;
 313         blue    = cmap->blue;
 314         transp  = cmap->transp;
 315         index   = cmap->start;
 316
 317         for (count = 0; count < cmap->len; count++) {
 318                 if (transp)
 319                         trans = *transp++;
 320                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
 321                                 count == cmap->len - 1);
 322                 if (r != 0)
 323                         return r;
 324         }
 325
 326         return 0;
 327 }
 328
 329 static int omapfb_update_full_screen(struct fb_info *fbi);
 330
 331 static int omapfb_blank(int blank, struct fb_info *fbi)
 332 {
 333         struct omapfb_plane_struct *plane = fbi->par;
 334         struct omapfb_device *fbdev = plane->fbdev;
 335         int do_update = 0;
 336         int r = 0;
 337
 338         omapfb_rqueue_lock(fbdev);
 339         switch (blank) {
 340         case VESA_NO_BLANKING:
 341                 if (fbdev->state == OMAPFB_SUSPENDED) {
 342                         if (fbdev->ctrl->resume)
 343                                 fbdev->ctrl->resume();
 344                         fbdev->panel->enable(fbdev->panel);
 345                         fbdev->state = OMAPFB_ACTIVE;
 346                         if (fbdev->ctrl->get_update_mode() ==
 347                                         OMAPFB_MANUAL_UPDATE)
 348                                 do_update = 1;
 349                 }
 350                 break;
 351         case VESA_POWERDOWN:
 352                 if (fbdev->state == OMAPFB_ACTIVE) {
 353                         fbdev->panel->disable(fbdev->panel);
 354                         if (fbdev->ctrl->suspend)
 355                                 fbdev->ctrl->suspend();
 356                         fbdev->state = OMAPFB_SUSPENDED;
 357                 }
 358                 break;
 359         default:
 360                 r = -EINVAL;
 361         }
 362         omapfb_rqueue_unlock(fbdev);
 363
 364         if (r == 0 && do_update)
 365                 r = omapfb_update_full_screen(fbi);
 366
 367         return r;
 368 }
 369
 370 static void omapfb_sync(struct fb_info *fbi)
 371 {
 372         struct omapfb_plane_struct *plane = fbi->par;
 373         struct omapfb_device *fbdev = plane->fbdev;
 374
 375         omapfb_rqueue_lock(fbdev);
 376         if (fbdev->ctrl->sync)
 377                 fbdev->ctrl->sync();
 378         omapfb_rqueue_unlock(fbdev);
 379 }
 380
 381 /*
 382  * Set fb_info.fix fields and also updates fbdev.
 383  * When calling this fb_info.var must be set up already.
 384  */
 385 static void set_fb_fix(struct fb_info *fbi)
 386 {
 387         struct fb_fix_screeninfo *fix = &fbi->fix;
 388         struct fb_var_screeninfo *var = &fbi->var;
 389         struct omapfb_plane_struct *plane = fbi->par;
 390         struct omapfb_mem_region *rg;
 391         int bpp;
 392
 393         rg = &plane->fbdev->mem_desc.region[plane->idx];
 394         fbi->screen_base        = (char __iomem *)rg->vaddr;
 395         fix->smem_start         = rg->paddr;
 396         fix->smem_len           = rg->size;
 397
 398         fix->type = FB_TYPE_PACKED_PIXELS;
 399         bpp = var->bits_per_pixel;
 400         if (var->nonstd)
 401                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 402         else switch (var->bits_per_pixel) {
 403         case 16:
 404         case 12:
 405                 fix->visual = FB_VISUAL_TRUECOLOR;
 406                 /* 12bpp is stored in 16 bits */
 407                 bpp = 16;
 408                 break;
 409         case 1:
 410         case 2:
 411         case 4:
 412         case 8:
 413                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 414                 break;
 415         }
 416         fix->accel              = FB_ACCEL_OMAP1610;
 417         fix->line_length        = var->xres_virtual * bpp / 8;
 418 }
 419
 420 static int set_color_mode(struct omapfb_plane_struct *plane,
 421                           struct fb_var_screeninfo *var)
 422 {
 423         switch (var->nonstd) {
 424         case 0:
 425                 break;
 426         case OMAPFB_COLOR_YUV422:
 427                 var->bits_per_pixel = 16;
 428                 plane->color_mode = var->nonstd;
 429                 return 0;
 430         case OMAPFB_COLOR_YUV420:
 431                 var->bits_per_pixel = 12;
 432                 plane->color_mode = var->nonstd;
 433                 return 0;
 434         case OMAPFB_COLOR_YUY422:
 435                 var->bits_per_pixel = 16;
 436                 plane->color_mode = var->nonstd;
 437                 return 0;
 438         default:
 439                 return -EINVAL;
 440         }
 441
 442         switch (var->bits_per_pixel) {
 443         case 1:
 444                 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
 445                 return 0;
 446         case 2:
 447                 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
 448                 return 0;
 449         case 4:
 450                 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
 451                 return 0;
 452         case 8:
 453                 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
 454                 return 0;
 455         case 12:
 456                 var->bits_per_pixel = 16;
 457                 plane->color_mode = OMAPFB_COLOR_RGB444;
 458                 return 0;
 459         case 16:
 460                 plane->color_mode = OMAPFB_COLOR_RGB565;
 461                 return 0;
 462         default:
 463                 return -EINVAL;
 464         }
 465 }
 466
 467 /*
 468  * Check the values in var against our capabilities and in case of out of
 469  * bound values try to adjust them.
 470  */
 471 static int set_fb_var(struct fb_info *fbi,
 472                       struct fb_var_screeninfo *var)
 473 {
 474         int             bpp;
 475         unsigned long   max_frame_size;
 476         unsigned long   line_size;
 477         int             xres_min, xres_max;
 478         int             yres_min, yres_max;
 479         struct omapfb_plane_struct *plane = fbi->par;
 480         struct omapfb_device *fbdev = plane->fbdev;
 481         struct lcd_panel *panel = fbdev->panel;
 482
 483         if (set_color_mode(plane, var) < 0)
 484                 return -EINVAL;
 485
 486         bpp = var->bits_per_pixel;
 487         if (plane->color_mode == OMAPFB_COLOR_RGB444)
 488                 bpp = 16;
 489
 490         switch (var->rotate) {
 491         case 0:
 492         case 180:
 493                 xres_min = OMAPFB_PLANE_XRES_MIN;
 494                 xres_max = panel->x_res;
 495                 yres_min = OMAPFB_PLANE_YRES_MIN;
 496                 yres_max = panel->y_res;
 497                 if (cpu_is_omap15xx()) {
 498                         var->xres = panel->x_res;
 499                         var->yres = panel->y_res;
 500                 }
 501                 break;
 502         case 90:
 503         case 270:
 504                 xres_min = OMAPFB_PLANE_YRES_MIN;
 505                 xres_max = panel->y_res;
 506                 yres_min = OMAPFB_PLANE_XRES_MIN;
 507                 yres_max = panel->x_res;
 508                 if (cpu_is_omap15xx()) {
 509                         var->xres = panel->y_res;
 510                         var->yres = panel->x_res;
 511                 }
 512                 break;
 513         default:
 514                 return -EINVAL;
 515         }
 516
 517         if (var->xres < xres_min)
 518                 var->xres = xres_min;
 519         if (var->yres < yres_min)
 520                 var->yres = yres_min;
 521         if (var->xres > xres_max)
 522                 var->xres = xres_max;
 523         if (var->yres > yres_max)
 524                 var->yres = yres_max;
 525
 526         if (var->xres_virtual < var->xres)
 527                 var->xres_virtual = var->xres;
 528         if (var->yres_virtual < var->yres)
 529                 var->yres_virtual = var->yres;
 530         max_frame_size = fbdev->mem_desc.region[plane->idx].size;
 531         line_size = var->xres_virtual * bpp / 8;
 532         if (line_size * var->yres_virtual > max_frame_size) {
 533                 /* Try to keep yres_virtual first */
 534                 line_size = max_frame_size / var->yres_virtual;
 535                 var->xres_virtual = line_size * 8 / bpp;
 536                 if (var->xres_virtual < var->xres) {
 537                         /* Still doesn't fit. Shrink yres_virtual too */
 538                         var->xres_virtual = var->xres;
 539                         line_size = var->xres * bpp / 8;
 540                         var->yres_virtual = max_frame_size / line_size;
 541                 }
 542                 /* Recheck this, as the virtual size changed. */
 543                 if (var->xres_virtual < var->xres)
 544                         var->xres = var->xres_virtual;
 545                 if (var->yres_virtual < var->yres)
 546                         var->yres = var->yres_virtual;
 547                 if (var->xres < xres_min || var->yres < yres_min)
 548                         return -EINVAL;
 549         }
 550         if (var->xres + var->xoffset > var->xres_virtual)
 551                 var->xoffset = var->xres_virtual - var->xres;
 552         if (var->yres + var->yoffset > var->yres_virtual)
 553                 var->yoffset = var->yres_virtual - var->yres;
 554         line_size = var->xres * bpp / 8;
 555
 556         if (plane->color_mode == OMAPFB_COLOR_RGB444) {
 557                 var->red.offset   = 8; var->red.length   = 4;
 558                                                 var->red.msb_right   = 0;
 559                 var->green.offset = 4; var->green.length = 4;
 560                                                 var->green.msb_right = 0;
 561                 var->blue.offset  = 0; var->blue.length  = 4;
 562                                                 var->blue.msb_right  = 0;
 563         } else {
 564                 var->red.offset  = 11; var->red.length   = 5;
 565                                                 var->red.msb_right   = 0;
 566                 var->green.offset = 5;  var->green.length = 6;
 567                                                 var->green.msb_right = 0;
 568                 var->blue.offset = 0;  var->blue.length  = 5;
 569                                                 var->blue.msb_right  = 0;
 570         }
 571
 572         var->height             = -1;
 573         var->width              = -1;
 574         var->grayscale          = 0;
 575
 576         /* pixclock in ps, the rest in pixclock */
 577         var->pixclock           = 10000000 / (panel->pixel_clock / 100);
 578         var->left_margin        = panel->hfp;
 579         var->right_margin       = panel->hbp;
 580         var->upper_margin       = panel->vfp;
 581         var->lower_margin       = panel->vbp;
 582         var->hsync_len          = panel->hsw;
 583         var->vsync_len          = panel->vsw;
 584
 585         /* TODO: get these from panel->config */
 586         var->vmode              = FB_VMODE_NONINTERLACED;
 587         var->sync               = 0;
 588
 589         return 0;
 590 }
 591
 592
 593 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
 594 static void omapfb_rotate(struct fb_info *fbi, int rotate)
 595 {
 596         struct omapfb_plane_struct *plane = fbi->par;
 597         struct omapfb_device *fbdev = plane->fbdev;
 598
 599         omapfb_rqueue_lock(fbdev);
 600         if (cpu_is_omap15xx() && rotate != fbi->var.rotate) {
 601                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 602
 603                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 604                 new_var->rotate = rotate;
 605                 if (set_fb_var(fbi, new_var) == 0 &&
 606                     memcmp(new_var, &fbi->var, sizeof(*new_var))) {
 607                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 608                         ctrl_change_mode(fbi);
 609                 }
 610         }
 611         omapfb_rqueue_unlock(fbdev);
 612 }
 613
 614 /*
 615  * Set new x,y offsets in the virtual display for the visible area and switch
 616  * to the new mode.
 617  */
 618 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 619                                struct fb_info *fbi)
 620 {
 621         struct omapfb_plane_struct *plane = fbi->par;
 622         struct omapfb_device *fbdev = plane->fbdev;
 623         int r = 0;
 624
 625         omapfb_rqueue_lock(fbdev);
 626         if (var->xoffset != fbi->var.xoffset ||
 627             var->yoffset != fbi->var.yoffset) {
 628                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 629
 630                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 631                 new_var->xoffset = var->xoffset;
 632                 new_var->yoffset = var->yoffset;
 633                 if (set_fb_var(fbi, new_var))
 634                         r = -EINVAL;
 635                 else {
 636                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 637                         ctrl_change_mode(fbi);
 638                 }
 639         }
 640         omapfb_rqueue_unlock(fbdev);
 641
 642         return r;
 643 }
 644
 645 /* Set mirror to vertical axis and switch to the new mode. */
 646 static int omapfb_mirror(struct fb_info *fbi, int mirror)
 647 {
 648         struct omapfb_plane_struct *plane = fbi->par;
 649         struct omapfb_device *fbdev = plane->fbdev;
 650         int r = 0;
 651
 652         omapfb_rqueue_lock(fbdev);
 653         mirror = mirror ? 1 : 0;
 654         if (cpu_is_omap15xx())
 655                 r = -EINVAL;
 656         else if (mirror != plane->info.mirror) {
 657                 plane->info.mirror = mirror;
 658                 r = ctrl_change_mode(fbi);
 659         }
 660         omapfb_rqueue_unlock(fbdev);
 661
 662         return r;
 663 }
 664
 665 /*
 666  * Check values in var, try to adjust them in case of out of bound values if
 667  * possible, or return error.
 668  */
 669 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 670 {
 671         struct omapfb_plane_struct *plane = fbi->par;
 672         struct omapfb_device *fbdev = plane->fbdev;
 673         int r;
 674
 675         omapfb_rqueue_lock(fbdev);
 676         if (fbdev->ctrl->sync != NULL)
 677                 fbdev->ctrl->sync();
 678         r = set_fb_var(fbi, var);
 679         omapfb_rqueue_unlock(fbdev);
 680
 681         return r;
 682 }
 683
 684 /*
 685  * Switch to a new mode. The parameters for it has been check already by
 686  * omapfb_check_var.
 687  */
 688 static int omapfb_set_par(struct fb_info *fbi)
 689 {
 690         struct omapfb_plane_struct *plane = fbi->par;
 691         struct omapfb_device *fbdev = plane->fbdev;
 692         int r = 0;
 693
 694         omapfb_rqueue_lock(fbdev);
 695         set_fb_fix(fbi);
 696         r = ctrl_change_mode(fbi);
 697         omapfb_rqueue_unlock(fbdev);
 698
 699         return r;
 700 }
 701
 702 int omapfb_update_window_async(struct fb_info *fbi,
 703                                 struct omapfb_update_window *win,
 704                                 void (*callback)(void *),
 705                                 void *callback_data)
 706 {
 707         struct omapfb_plane_struct *plane = fbi->par;
 708         struct omapfb_device *fbdev = plane->fbdev;
 709         struct fb_var_screeninfo *var;
 710
 711         var = &fbi->var;
 712         if (win->x >= var->xres || win->y >= var->yres ||
 713             win->out_x > var->xres || win->out_y >= var->yres)
 714                 return -EINVAL;
 715
 716         if (!fbdev->ctrl->update_window ||
 717             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 718                 return -ENODEV;
 719
 720         if (win->x + win->width >= var->xres)
 721                 win->width = var->xres - win->x;
 722         if (win->y + win->height >= var->yres)
 723                 win->height = var->yres - win->y;
 724         /* The out sizes should be cropped to the LCD size */
 725         if (win->out_x + win->out_width > fbdev->panel->x_res)
 726                 win->out_width = fbdev->panel->x_res - win->out_x;
 727         if (win->out_y + win->out_height > fbdev->panel->y_res)
 728                 win->out_height = fbdev->panel->y_res - win->out_y;
 729         if (!win->width || !win->height || !win->out_width || !win->out_height)
 730                 return 0;
 731
 732         return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
 733 }
 734 EXPORT_SYMBOL(omapfb_update_window_async);
 735
 736 static int omapfb_update_win(struct fb_info *fbi,
 737                                 struct omapfb_update_window *win)
 738 {
 739         struct omapfb_plane_struct *plane = fbi->par;
 740         int ret;
 741
 742         omapfb_rqueue_lock(plane->fbdev);
 743         ret = omapfb_update_window_async(fbi, win, NULL, 0);
 744         omapfb_rqueue_unlock(plane->fbdev);
 745
 746         return ret;
 747 }
 748
 749 static int omapfb_update_full_screen(struct fb_info *fbi)
 750 {
 751         struct omapfb_plane_struct *plane = fbi->par;
 752         struct omapfb_device *fbdev = plane->fbdev;
 753         struct omapfb_update_window win;
 754         int r;
 755
 756         if (!fbdev->ctrl->update_window ||
 757             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 758                 return -ENODEV;
 759
 760         win.x = 0;
 761         win.y = 0;
 762         win.width = fbi->var.xres;
 763         win.height = fbi->var.yres;
 764         win.out_x = 0;
 765         win.out_y = 0;
 766         win.out_width = fbi->var.xres;
 767         win.out_height = fbi->var.yres;
 768         win.format = 0;
 769
 770         omapfb_rqueue_lock(fbdev);
 771         r = fbdev->ctrl->update_window(fbi, &win, NULL, 0);
 772         omapfb_rqueue_unlock(fbdev);
 773
 774         return r;
 775 }
 776
 777 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 778 {
 779         struct omapfb_plane_struct *plane = fbi->par;
 780         struct omapfb_device *fbdev = plane->fbdev;
 781         struct lcd_panel *panel = fbdev->panel;
 782         struct omapfb_plane_info old_info;
 783         int r = 0;
 784
 785         if (pi->pos_x + pi->out_width > panel->x_res ||
 786             pi->pos_y + pi->out_height > panel->y_res)
 787                 return -EINVAL;
 788
 789         omapfb_rqueue_lock(fbdev);
 790         if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
 791                 /*
 792                  * This plane's memory was freed, can't enable it
 793                  * until it's reallocated.
 794                  */
 795                 r = -EINVAL;
 796                 goto out;
 797         }
 798         old_info = plane->info;
 799         plane->info = *pi;
 800         if (pi->enabled) {
 801                 r = ctrl_change_mode(fbi);
 802                 if (r < 0) {
 803                         plane->info = old_info;
 804                         goto out;
 805                 }
 806         }
 807         r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
 808         if (r < 0) {
 809                 plane->info = old_info;
 810                 goto out;
 811         }
 812 out:
 813         omapfb_rqueue_unlock(fbdev);
 814         return r;
 815 }
 816
 817 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 818 {
 819         struct omapfb_plane_struct *plane = fbi->par;
 820
 821         *pi = plane->info;
 822         return 0;
 823 }
 824
 825 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 826 {
 827         struct omapfb_plane_struct *plane = fbi->par;
 828         struct omapfb_device *fbdev = plane->fbdev;
 829         struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
 830         size_t size;
 831         int r = 0;
 832
 833         if (fbdev->ctrl->setup_mem == NULL)
 834                 return -ENODEV;
 835         if (mi->type > OMAPFB_MEMTYPE_MAX)
 836                 return -EINVAL;
 837
 838         size = PAGE_ALIGN(mi->size);
 839         omapfb_rqueue_lock(fbdev);
 840         if (plane->info.enabled) {
 841                 r = -EBUSY;
 842                 goto out;
 843         }
 844         if (rg->size != size || rg->type != mi->type) {
 845                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 846                 unsigned long old_size = rg->size;
 847                 u8            old_type = rg->type;
 848                 unsigned long paddr;
 849
 850                 rg->size = size;
 851                 rg->type = mi->type;
 852                 /*
 853                  * size == 0 is a special case, for which we
 854                  * don't check / adjust the screen parameters.
 855                  * This isn't a problem since the plane can't
 856                  * be reenabled unless its size is > 0.
 857                  */
 858                 if (old_size != size && size) {
 859                         if (size) {
 860                                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 861                                 r = set_fb_var(fbi, new_var);
 862                                 if (r < 0)
 863                                         goto out;
 864                         }
 865                 }
 866
 867                 if (fbdev->ctrl->sync)
 868                         fbdev->ctrl->sync();
 869                 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
 870                 if (r < 0) {
 871                         /* Revert changes. */
 872                         rg->size = old_size;
 873                         rg->type = old_type;
 874                         goto out;
 875                 }
 876                 rg->paddr = paddr;
 877
 878                 if (old_size != size) {
 879                         if (size) {
 880                                 memcpy(&fbi->var, new_var, sizeof(fbi->var));
 881                                 set_fb_fix(fbi);
 882                         } else {
 883                                 /*
 884                                  * Set these explicitly to indicate that the
 885                                  * plane memory is dealloce'd, the other
 886                                  * screen parameters in var / fix are invalid.
 887                                  */
 888                                 fbi->fix.smem_start = 0;
 889                                 fbi->fix.smem_len = 0;
 890                         }
 891                 }
 892         }
 893 out:
 894         omapfb_rqueue_unlock(fbdev);
 895
 896         return r;
 897 }
 898
 899 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 900 {
 901         struct omapfb_plane_struct *plane = fbi->par;
 902         struct omapfb_device *fbdev = plane->fbdev;
 903         struct omapfb_mem_region *rg;
 904
 905         rg = &fbdev->mem_desc.region[plane->idx];
 906         memset(mi, 0, sizeof(*mi));
 907         mi->size = rg->size;
 908         mi->type = rg->type;
 909
 910         return 0;
 911 }
 912
 913 static int omapfb_set_color_key(struct omapfb_device *fbdev,
 914                                 struct omapfb_color_key *ck)
 915 {
 916         int r;
 917
 918         if (!fbdev->ctrl->set_color_key)
 919                 return -ENODEV;
 920
 921         omapfb_rqueue_lock(fbdev);
 922         r = fbdev->ctrl->set_color_key(ck);
 923         omapfb_rqueue_unlock(fbdev);
 924
 925         return r;
 926 }
 927
 928 static int omapfb_get_color_key(struct omapfb_device *fbdev,
 929                                 struct omapfb_color_key *ck)
 930 {
 931         int r;
 932
 933         if (!fbdev->ctrl->get_color_key)
 934                 return -ENODEV;
 935
 936         omapfb_rqueue_lock(fbdev);
 937         r = fbdev->ctrl->get_color_key(ck);
 938         omapfb_rqueue_unlock(fbdev);
 939
 940         return r;
 941 }
 942
 943 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
 944 static int notifier_inited;
 945
 946 static void omapfb_init_notifier(void)
 947 {
 948         int i;
 949
 950         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
 951                 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
 952 }
 953
 954 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
 955                                 omapfb_notifier_callback_t callback,
 956                                 void *callback_data)
 957 {
 958         int r;
 959
 960         if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
 961                 return -EINVAL;
 962
 963         if (!notifier_inited) {
 964                 omapfb_init_notifier();
 965                 notifier_inited = 1;
 966         }
 967
 968         omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
 969                                         unsigned long, void *))callback;
 970         omapfb_nb->data = callback_data;
 971         r = blocking_notifier_chain_register(
 972                                 &omapfb_client_list[omapfb_nb->plane_idx],
 973                                 &omapfb_nb->nb);
 974         if (r)
 975                 return r;
 976         if (omapfb_dev != NULL &&
 977             omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
 978                 omapfb_dev->ctrl->bind_client(omapfb_nb);
 979         }
 980
 981         return 0;
 982 }
 983 EXPORT_SYMBOL(omapfb_register_client);
 984
 985 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
 986 {
 987         return blocking_notifier_chain_unregister(
 988                 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
 989 }
 990 EXPORT_SYMBOL(omapfb_unregister_client);
 991
 992 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
 993 {
 994         int i;
 995
 996         if (!notifier_inited)
 997                 /* no client registered yet */
 998                 return;
 999
1000         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1001                 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1002                                     fbdev->fb_info[i]);
1003 }
1004 EXPORT_SYMBOL(omapfb_notify_clients);
1005
1006 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1007                                    enum omapfb_update_mode mode)
1008 {
1009         int r;
1010
1011         omapfb_rqueue_lock(fbdev);
1012         r = fbdev->ctrl->set_update_mode(mode);
1013         omapfb_rqueue_unlock(fbdev);
1014
1015         return r;
1016 }
1017
1018 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1019 {
1020         int r;
1021
1022         omapfb_rqueue_lock(fbdev);
1023         r = fbdev->ctrl->get_update_mode();
1024         omapfb_rqueue_unlock(fbdev);
1025
1026         return r;
1027 }
1028
1029 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1030                                      struct omapfb_caps *caps)
1031 {
1032         memset(caps, 0, sizeof(*caps));
1033         fbdev->ctrl->get_caps(plane, caps);
1034         caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1035 }
1036
1037 /* For lcd testing */
1038 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1039 {
1040         omapfb_rqueue_lock(fbdev);
1041         *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1042         if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1043                 struct omapfb_update_window win;
1044
1045                 memset(&win, 0, sizeof(win));
1046                 win.width = 2;
1047                 win.height = 2;
1048                 win.out_width = 2;
1049                 win.out_height = 2;
1050                 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, 0);
1051         }
1052         omapfb_rqueue_unlock(fbdev);
1053 }
1054 EXPORT_SYMBOL(omapfb_write_first_pixel);
1055
1056 /*
1057  * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1058  * here to be accessible by user mode code.
1059  */
1060 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1061                         unsigned long arg)
1062 {
1063         struct omapfb_plane_struct *plane = fbi->par;
1064         struct omapfb_device    *fbdev = plane->fbdev;
1065         struct fb_ops           *ops = fbi->fbops;
1066         union {
1067                 struct omapfb_update_window     update_window;
1068                 struct omapfb_plane_info        plane_info;
1069                 struct omapfb_mem_info          mem_info;
1070                 struct omapfb_color_key         color_key;
1071                 enum omapfb_update_mode         update_mode;
1072                 struct omapfb_caps              caps;
1073                 unsigned int            mirror;
1074                 int                     plane_out;
1075                 int                     enable_plane;
1076         } p;
1077         int r = 0;
1078
1079         BUG_ON(!ops);
1080         switch (cmd) {
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,
1351                                                             level);
1352                 } else
1353                         r = -EINVAL;
1354         } else
1355                 r = -ENODEV;
1356         return r ? r : size;
1357 }
1358
1359 static ssize_t omapfb_show_bklight_max(struct device *dev,
1360                                        struct device_attribute *attr, char *buf)
1361 {
1362         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1363         int r;
1364
1365         if (fbdev->panel->get_bklight_level) {
1366                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1367                              fbdev->panel->get_bklight_max(fbdev->panel));
1368         } else
1369                 r = -ENODEV;
1370         return r;
1371 }
1372
1373 static struct device_attribute dev_attr_panel_name =
1374         __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1375 static DEVICE_ATTR(backlight_level, 0664,
1376                    omapfb_show_bklight_level, omapfb_store_bklight_level);
1377 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1378
1379 static struct attribute *panel_attrs[] = {
1380         &dev_attr_panel_name.attr,
1381         &dev_attr_backlight_level.attr,
1382         &dev_attr_backlight_max.attr,
1383         NULL,
1384 };
1385
1386 static struct attribute_group panel_attr_grp = {
1387         .name  = "panel",
1388         .attrs = panel_attrs,
1389 };
1390
1391 /* ctrl sysfs entries */
1392 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1393                                      struct device_attribute *attr, char *buf)
1394 {
1395         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1396
1397         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1398 }
1399
1400 static struct device_attribute dev_attr_ctrl_name =
1401         __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1402
1403 static struct attribute *ctrl_attrs[] = {
1404         &dev_attr_ctrl_name.attr,
1405         NULL,
1406 };
1407
1408 static struct attribute_group ctrl_attr_grp = {
1409         .name  = "ctrl",
1410         .attrs = ctrl_attrs,
1411 };
1412
1413 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1414 {
1415         int r;
1416
1417         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1418                 goto fail0;
1419
1420         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1421                 goto fail1;
1422
1423         if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1424                 goto fail2;
1425
1426         if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1427                 goto fail3;
1428
1429         return 0;
1430 fail3:
1431         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1432 fail2:
1433         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1434 fail1:
1435         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1436 fail0:
1437         dev_err(fbdev->dev, "unable to register sysfs interface\n");
1438         return r;
1439 }
1440
1441 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1442 {
1443         sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1444         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1445         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1446         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1447 }
1448
1449 /*
1450  * ---------------------------------------------------------------------------
1451  * LDM callbacks
1452  * ---------------------------------------------------------------------------
1453  */
1454 /* Initialize system fb_info object and set the default video mode.
1455  * The frame buffer memory already allocated by lcddma_init
1456  */
1457 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1458 {
1459         struct fb_var_screeninfo        *var = &info->var;
1460         struct fb_fix_screeninfo        *fix = &info->fix;
1461         int                             r = 0;
1462
1463         info->fbops = &omapfb_ops;
1464         info->flags = FBINFO_FLAG_DEFAULT;
1465
1466         strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1467
1468         info->pseudo_palette = fbdev->pseudo_palette;
1469
1470         var->accel_flags  = def_accel ? FB_ACCELF_TEXT : 0;
1471         var->xres = def_vxres;
1472         var->yres = def_vyres;
1473         var->xres_virtual = def_vxres;
1474         var->yres_virtual = def_vyres;
1475         var->rotate       = def_rotate;
1476         var->bits_per_pixel = fbdev->panel->bpp;
1477
1478         set_fb_var(info, var);
1479         set_fb_fix(info);
1480
1481         r = fb_alloc_cmap(&info->cmap, 16, 0);
1482         if (r != 0)
1483                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1484
1485         return r;
1486 }
1487
1488 /* Release the fb_info object */
1489 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1490 {
1491         fb_dealloc_cmap(&fbi->cmap);
1492 }
1493
1494 static void planes_cleanup(struct omapfb_device *fbdev)
1495 {
1496         int i;
1497
1498         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1499                 if (fbdev->fb_info[i] == NULL)
1500                         break;
1501                 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1502                 framebuffer_release(fbdev->fb_info[i]);
1503         }
1504 }
1505
1506 static int planes_init(struct omapfb_device *fbdev)
1507 {
1508         struct fb_info *fbi;
1509         int i;
1510         int r;
1511
1512         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1513                 struct omapfb_plane_struct *plane;
1514                 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1515                                         fbdev->dev);
1516                 if (fbi == NULL) {
1517                         dev_err(fbdev->dev,
1518                                 "unable to allocate memory for plane info\n");
1519                         planes_cleanup(fbdev);
1520                         return -ENOMEM;
1521                 }
1522                 plane = fbi->par;
1523                 plane->idx = i;
1524                 plane->fbdev = fbdev;
1525                 plane->info.mirror = def_mirror;
1526                 fbdev->fb_info[i] = fbi;
1527
1528                 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1529                         framebuffer_release(fbi);
1530                         planes_cleanup(fbdev);
1531                         return r;
1532                 }
1533                 plane->info.out_width = fbi->var.xres;
1534                 plane->info.out_height = fbi->var.yres;
1535         }
1536         return 0;
1537 }
1538
1539 /*
1540  * Free driver resources. Can be called to rollback an aborted initialization
1541  * sequence.
1542  */
1543 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1544 {
1545         int i;
1546
1547         switch (state) {
1548         case OMAPFB_ACTIVE:
1549                 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1550                         unregister_framebuffer(fbdev->fb_info[i]);
1551         case 7:
1552                 omapfb_unregister_sysfs(fbdev);
1553         case 6:
1554                 fbdev->panel->disable(fbdev->panel);
1555         case 5:
1556                 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1557         case 4:
1558                 planes_cleanup(fbdev);
1559         case 3:
1560                 ctrl_cleanup(fbdev);
1561         case 2:
1562                 fbdev->panel->cleanup(fbdev->panel);
1563         case 1:
1564                 dev_set_drvdata(fbdev->dev, NULL);
1565                 kfree(fbdev);
1566         case 0:
1567                 /* nothing to free */
1568                 break;
1569         default:
1570                 BUG();
1571         }
1572 }
1573
1574 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1575 {
1576         struct omapfb_platform_data *conf;
1577         char name[17];
1578         int i;
1579
1580         conf = fbdev->dev->platform_data;
1581
1582         fbdev->ctrl = NULL;
1583
1584         strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1585         name[sizeof(name) - 1] = '\0';
1586
1587         if (strcmp(name, "internal") == 0) {
1588                 fbdev->ctrl = fbdev->int_ctrl;
1589                 return 0;
1590         }
1591
1592         for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1593                 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1594                 if (strcmp(ctrls[i]->name, name) == 0) {
1595                         fbdev->ctrl = ctrls[i];
1596                         break;
1597                 }
1598         }
1599
1600         if (fbdev->ctrl == NULL) {
1601                 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1602                 return -1;
1603         }
1604
1605         return 0;
1606 }
1607
1608 static void check_required_callbacks(struct omapfb_device *fbdev)
1609 {
1610 #define _C(x) (fbdev->ctrl->x != NULL)
1611 #define _P(x) (fbdev->panel->x != NULL)
1612         BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1613         BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1614                  _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1615                  _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1616                  _P(get_caps)));
1617 #undef _P
1618 #undef _C
1619 }
1620
1621 /*
1622  * Called by LDM binding to probe and attach a new device.
1623  * Initialization sequence:
1624  *   1. allocate system omapfb_device structure
1625  *   2. select controller type according to platform configuration
1626  *      init LCD panel
1627  *   3. init LCD controller and LCD DMA
1628  *   4. init system fb_info structure for all planes
1629  *   5. setup video mode for first plane and enable it
1630  *   6. enable LCD panel
1631  *   7. register sysfs attributes
1632  *   OMAPFB_ACTIVE: register system fb_info structure for all planes
1633  */
1634 static int omapfb_do_probe(struct platform_device *pdev,
1635                                 struct lcd_panel *panel)
1636 {
1637         struct omapfb_device    *fbdev = NULL;
1638         int                     init_state;
1639         unsigned long           phz, hhz, vhz;
1640         unsigned long           vram;
1641         int                     i;
1642         int                     r = 0;
1643
1644         init_state = 0;
1645
1646         if (pdev->num_resources != 0) {
1647                 dev_err(&pdev->dev, "probed for an unknown device\n");
1648                 r = -ENODEV;
1649                 goto cleanup;
1650         }
1651
1652         if (pdev->dev.platform_data == NULL) {
1653                 dev_err(&pdev->dev, "missing platform data\n");
1654                 r = -ENOENT;
1655                 goto cleanup;
1656         }
1657
1658         fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1659         if (fbdev == NULL) {
1660                 dev_err(&pdev->dev,
1661                         "unable to allocate memory for device info\n");
1662                 r = -ENOMEM;
1663                 goto cleanup;
1664         }
1665         init_state++;
1666
1667         fbdev->dev = &pdev->dev;
1668         fbdev->panel = panel;
1669         platform_set_drvdata(pdev, fbdev);
1670
1671         mutex_init(&fbdev->rqueue_mutex);
1672
1673 #ifdef CONFIG_ARCH_OMAP1
1674         fbdev->int_ctrl = &omap1_int_ctrl;
1675 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1676         fbdev->ext_if = &omap1_ext_if;
1677 #endif
1678 #else   /* OMAP2 */
1679         fbdev->int_ctrl = &omap2_int_ctrl;
1680 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1681         fbdev->ext_if = &omap2_ext_if;
1682 #endif
1683 #endif
1684         if (omapfb_find_ctrl(fbdev) < 0) {
1685                 dev_err(fbdev->dev,
1686                         "LCD controller not found, board not supported\n");
1687                 r = -ENODEV;
1688                 goto cleanup;
1689         }
1690
1691         r = fbdev->panel->init(fbdev->panel, fbdev);
1692         if (r)
1693                 goto cleanup;
1694
1695         pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1696
1697         def_vxres = def_vxres ? : fbdev->panel->x_res;
1698         def_vyres = def_vyres ? : fbdev->panel->y_res;
1699
1700         init_state++;
1701
1702         r = ctrl_init(fbdev);
1703         if (r)
1704                 goto cleanup;
1705         if (fbdev->ctrl->mmap != NULL)
1706                 omapfb_ops.fb_mmap = omapfb_mmap;
1707         init_state++;
1708
1709         check_required_callbacks(fbdev);
1710
1711         r = planes_init(fbdev);
1712         if (r)
1713                 goto cleanup;
1714         init_state++;
1715
1716 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1717         /* Set DMA priority for EMIFF access to highest */
1718         if (cpu_class_is_omap1())
1719                 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1720 #endif
1721
1722         r = ctrl_change_mode(fbdev->fb_info[0]);
1723         if (r) {
1724                 dev_err(fbdev->dev, "mode setting failed\n");
1725                 goto cleanup;
1726         }
1727
1728         /* GFX plane is enabled by default */
1729         r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1730         if (r)
1731                 goto cleanup;
1732
1733         omapfb_set_update_mode(fbdev, manual_update ?
1734                                    OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1735         init_state++;
1736
1737         r = fbdev->panel->enable(fbdev->panel);
1738         if (r)
1739                 goto cleanup;
1740         init_state++;
1741
1742         r = omapfb_register_sysfs(fbdev);
1743         if (r)
1744                 goto cleanup;
1745         init_state++;
1746
1747         vram = 0;
1748         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1749                 r = register_framebuffer(fbdev->fb_info[i]);
1750                 if (r != 0) {
1751                         dev_err(fbdev->dev,
1752                                 "registering framebuffer %d failed\n", i);
1753                         goto cleanup;
1754                 }
1755                 vram += fbdev->mem_desc.region[i].size;
1756         }
1757
1758         fbdev->state = OMAPFB_ACTIVE;
1759
1760         panel = fbdev->panel;
1761         phz = panel->pixel_clock * 1000;
1762         hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1763         vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1764
1765         omapfb_dev = fbdev;
1766
1767         pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1768                         vram, fbdev->mem_desc.region_cnt);
1769         pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1770                         "vfreq %lu.%lu Hz\n",
1771                         phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1772
1773         return 0;
1774
1775 cleanup:
1776         omapfb_free_resources(fbdev, init_state);
1777
1778         return r;
1779 }
1780
1781 static int omapfb_probe(struct platform_device *pdev)
1782 {
1783         BUG_ON(fbdev_pdev != NULL);
1784
1785         /* Delay actual initialization until the LCD is registered */
1786         fbdev_pdev = pdev;
1787         if (fbdev_panel != NULL)
1788                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1789         return 0;
1790 }
1791
1792 void omapfb_register_panel(struct lcd_panel *panel)
1793 {
1794         BUG_ON(fbdev_panel != NULL);
1795
1796         fbdev_panel = panel;
1797         if (fbdev_pdev != NULL)
1798                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1799 }
1800
1801 /* Called when the device is being detached from the driver */
1802 static int omapfb_remove(struct platform_device *pdev)
1803 {
1804         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1805         enum omapfb_state saved_state = fbdev->state;
1806
1807         /* FIXME: wait till completion of pending events */
1808
1809         fbdev->state = OMAPFB_DISABLED;
1810         omapfb_free_resources(fbdev, saved_state);
1811
1812         return 0;
1813 }
1814
1815 /* PM suspend */
1816 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1817 {
1818         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1819
1820         omapfb_blank(VESA_POWERDOWN, fbdev->fb_info[0]);
1821
1822         return 0;
1823 }
1824
1825 /* PM resume */
1826 static int omapfb_resume(struct platform_device *pdev)
1827 {
1828         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1829
1830         omapfb_blank(VESA_NO_BLANKING, fbdev->fb_info[0]);
1831         return 0;
1832 }
1833
1834 static struct platform_driver omapfb_driver = {
1835         .probe          = omapfb_probe,
1836         .remove         = omapfb_remove,
1837         .suspend        = omapfb_suspend,
1838         .resume         = omapfb_resume,
1839         .driver         = {
1840                 .name   = MODULE_NAME,
1841                 .owner  = THIS_MODULE,
1842         },
1843 };
1844
1845 #ifndef MODULE
1846
1847 /* Process kernel command line parameters */
1848 static int __init omapfb_setup(char *options)
1849 {
1850         char *this_opt = NULL;
1851         int r = 0;
1852
1853         pr_debug("omapfb: options %s\n", options);
1854
1855         if (!options || !*options)
1856                 return 0;
1857
1858         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1859                 if (!strncmp(this_opt, "accel", 5))
1860                         def_accel = 1;
1861                 else if (!strncmp(this_opt, "vram:", 5)) {
1862                         char *suffix;
1863                         unsigned long vram;
1864                         vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1865                         switch (suffix[0]) {
1866                         case '\0':
1867                                 break;
1868                         case 'm':
1869                         case 'M':
1870                                 vram *= 1024;
1871                                 /* Fall through */
1872                         case 'k':
1873                         case 'K':
1874                                 vram *= 1024;
1875                                 break;
1876                         default:
1877                                 pr_debug("omapfb: invalid vram suffix %c\n",
1878                                          suffix[0]);
1879                                 r = -1;
1880                         }
1881                         def_vram[def_vram_cnt++] = vram;
1882                 }
1883                 else if (!strncmp(this_opt, "vxres:", 6))
1884                         def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1885                 else if (!strncmp(this_opt, "vyres:", 6))
1886                         def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1887                 else if (!strncmp(this_opt, "rotate:", 7))
1888                         def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1889                 else if (!strncmp(this_opt, "mirror:", 7))
1890                         def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1891                 else if (!strncmp(this_opt, "manual_update", 13))
1892                         manual_update = 1;
1893                 else {
1894                         pr_debug("omapfb: invalid option\n");
1895                         r = -1;
1896                 }
1897         }
1898
1899         return r;
1900 }
1901
1902 #endif
1903
1904 /* Register both the driver and the device */
1905 static int __init omapfb_init(void)
1906 {
1907 #ifndef MODULE
1908         char *option;
1909
1910         if (fb_get_options("omapfb", &option))
1911                 return -ENODEV;
1912         omapfb_setup(option);
1913 #endif
1914         /* Register the driver with LDM */
1915         if (platform_driver_register(&omapfb_driver)) {
1916                 pr_debug("failed to register omapfb driver\n");
1917                 return -ENODEV;
1918         }
1919
1920         return 0;
1921 }
1922
1923 static void __exit omapfb_cleanup(void)
1924 {
1925         platform_driver_unregister(&omapfb_driver);
1926 }
1927
1928 module_param_named(accel, def_accel, uint, 0664);
1929 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1930 module_param_named(vxres, def_vxres, long, 0664);
1931 module_param_named(vyres, def_vyres, long, 0664);
1932 module_param_named(rotate, def_rotate, uint, 0664);
1933 module_param_named(mirror, def_mirror, uint, 0664);
1934 module_param_named(manual_update, manual_update, bool, 0664);
1935
1936 module_init(omapfb_init);
1937 module_exit(omapfb_cleanup);
1938
1939 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1940 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1941 MODULE_LICENSE("GPL");