drivers/video/fbdev/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/mm.h>
  29 #include <linux/slab.h>
  30 #include <linux/uaccess.h>
  31 #include <linux/module.h>
  32
  33 #include <linux/omap-dma.h>
  34
  35 #include <mach/hardware.h>
  36
  37 #include "omapfb.h"
  38 #include "lcdc.h"
  39
  40 #define MODULE_NAME     "omapfb"
  41
  42 static unsigned int     def_accel;
  43 static unsigned long    def_vram[OMAPFB_PLANE_NUM];
  44 static unsigned int     def_vram_cnt;
  45 static unsigned long    def_vxres;
  46 static unsigned long    def_vyres;
  47 static unsigned int     def_rotate;
  48 static unsigned int     def_mirror;
  49
  50 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
  51 static bool             manual_update = 1;
  52 #else
  53 static bool             manual_update;
  54 #endif
  55
  56 static struct platform_device   *fbdev_pdev;
  57 static struct lcd_panel         *fbdev_panel;
  58 static struct omapfb_device     *omapfb_dev;
  59
  60 struct caps_table_struct {
  61         unsigned long flag;
  62         const char *name;
  63 };
  64
  65 static struct caps_table_struct ctrl_caps[] = {
  66         { OMAPFB_CAPS_MANUAL_UPDATE,  "manual update" },
  67         { OMAPFB_CAPS_TEARSYNC,       "tearing synchronization" },
  68         { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" },
  69         { OMAPFB_CAPS_PLANE_SCALE,    "scale plane" },
  70         { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" },
  71         { OMAPFB_CAPS_WINDOW_SCALE,   "scale window" },
  72         { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" },
  73         { OMAPFB_CAPS_WINDOW_ROTATE,  "rotate window" },
  74         { OMAPFB_CAPS_SET_BACKLIGHT,  "backlight setting" },
  75 };
  76
  77 static struct caps_table_struct color_caps[] = {
  78         { 1 << OMAPFB_COLOR_RGB565,     "RGB565", },
  79         { 1 << OMAPFB_COLOR_YUV422,     "YUV422", },
  80         { 1 << OMAPFB_COLOR_YUV420,     "YUV420", },
  81         { 1 << OMAPFB_COLOR_CLUT_8BPP,  "CLUT8", },
  82         { 1 << OMAPFB_COLOR_CLUT_4BPP,  "CLUT4", },
  83         { 1 << OMAPFB_COLOR_CLUT_2BPP,  "CLUT2", },
  84         { 1 << OMAPFB_COLOR_CLUT_1BPP,  "CLUT1", },
  85         { 1 << OMAPFB_COLOR_RGB444,     "RGB444", },
  86         { 1 << OMAPFB_COLOR_YUY422,     "YUY422", },
  87 };
  88
  89 static void omapdss_release(struct device *dev)
  90 {
  91 }
  92
  93 /* dummy device for clocks */
  94 static struct platform_device omapdss_device = {
  95         .name           = "omapdss_dss",
  96         .id             = -1,
  97         .dev            = {
  98                 .release = omapdss_release,
  99         },
 100 };
 101
 102 /*
 103  * ---------------------------------------------------------------------------
 104  * LCD panel
 105  * ---------------------------------------------------------------------------
 106  */
 107 extern struct lcd_ctrl hwa742_ctrl;
 108
 109 static const struct lcd_ctrl *ctrls[] = {
 110         &omap1_int_ctrl,
 111
 112 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
 113         &hwa742_ctrl,
 114 #endif
 115 };
 116
 117 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
 118 extern struct lcd_ctrl_extif omap1_ext_if;
 119 #endif
 120
 121 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
 122 {
 123         mutex_lock(&fbdev->rqueue_mutex);
 124 }
 125
 126 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
 127 {
 128         mutex_unlock(&fbdev->rqueue_mutex);
 129 }
 130
 131 /*
 132  * ---------------------------------------------------------------------------
 133  * LCD controller and LCD DMA
 134  * ---------------------------------------------------------------------------
 135  */
 136 /*
 137  * Allocate resources needed for LCD controller and LCD DMA operations. Video
 138  * memory is allocated from system memory according to the virtual display
 139  * size, except if a bigger memory size is specified explicitly as a kernel
 140  * parameter.
 141  */
 142 static int ctrl_init(struct omapfb_device *fbdev)
 143 {
 144         int r;
 145         int i;
 146
 147         /* kernel/module vram parameters override boot tags/board config */
 148         if (def_vram_cnt) {
 149                 for (i = 0; i < def_vram_cnt; i++)
 150                         fbdev->mem_desc.region[i].size =
 151                                 PAGE_ALIGN(def_vram[i]);
 152                 fbdev->mem_desc.region_cnt = i;
 153         }
 154
 155         if (!fbdev->mem_desc.region_cnt) {
 156                 struct lcd_panel *panel = fbdev->panel;
 157                 int def_size;
 158                 int bpp = panel->bpp;
 159
 160                 /* 12 bpp is packed in 16 bits */
 161                 if (bpp == 12)
 162                         bpp = 16;
 163                 def_size = def_vxres * def_vyres * bpp / 8;
 164                 fbdev->mem_desc.region_cnt = 1;
 165                 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
 166         }
 167         r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
 168         if (r < 0) {
 169                 dev_err(fbdev->dev, "controller initialization failed (%d)\n",
 170                         r);
 171                 return r;
 172         }
 173
 174 #ifdef DEBUG
 175         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
 176                 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
 177                          i,
 178                          fbdev->mem_desc.region[i].paddr,
 179                          fbdev->mem_desc.region[i].vaddr,
 180                          fbdev->mem_desc.region[i].size);
 181         }
 182 #endif
 183         return 0;
 184 }
 185
 186 static void ctrl_cleanup(struct omapfb_device *fbdev)
 187 {
 188         fbdev->ctrl->cleanup();
 189 }
 190
 191 /* Must be called with fbdev->rqueue_mutex held. */
 192 static int ctrl_change_mode(struct fb_info *fbi)
 193 {
 194         int r;
 195         unsigned long offset;
 196         struct omapfb_plane_struct *plane = fbi->par;
 197         struct omapfb_device *fbdev = plane->fbdev;
 198         struct fb_var_screeninfo *var = &fbi->var;
 199
 200         offset = var->yoffset * fbi->fix.line_length +
 201                  var->xoffset * var->bits_per_pixel / 8;
 202
 203         if (fbdev->ctrl->sync)
 204                 fbdev->ctrl->sync();
 205         r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
 206                                  offset, var->xres_virtual,
 207                                  plane->info.pos_x, plane->info.pos_y,
 208                                  var->xres, var->yres, plane->color_mode);
 209         if (r < 0)
 210                 return r;
 211
 212         if (fbdev->ctrl->set_rotate != NULL) {
 213                 r = fbdev->ctrl->set_rotate(var->rotate);
 214                 if (r < 0)
 215                         return r;
 216         }
 217
 218         if (fbdev->ctrl->set_scale != NULL)
 219                 r = fbdev->ctrl->set_scale(plane->idx,
 220                                    var->xres, var->yres,
 221                                    plane->info.out_width,
 222                                    plane->info.out_height);
 223
 224         return r;
 225 }
 226
 227 /*
 228  * ---------------------------------------------------------------------------
 229  * fbdev framework callbacks and the ioctl interface
 230  * ---------------------------------------------------------------------------
 231  */
 232 /* Called each time the omapfb device is opened */
 233 static int omapfb_open(struct fb_info *info, int user)
 234 {
 235         return 0;
 236 }
 237
 238 static void omapfb_sync(struct fb_info *info);
 239
 240 /* Called when the omapfb device is closed. We make sure that any pending
 241  * gfx DMA operations are ended, before we return. */
 242 static int omapfb_release(struct fb_info *info, int user)
 243 {
 244         omapfb_sync(info);
 245         return 0;
 246 }
 247
 248 /* Store a single color palette entry into a pseudo palette or the hardware
 249  * palette if one is available. For now we support only 16bpp and thus store
 250  * the entry only to the pseudo palette.
 251  */
 252 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
 253                         u_int blue, u_int transp, int update_hw_pal)
 254 {
 255         struct omapfb_plane_struct *plane = info->par;
 256         struct omapfb_device *fbdev = plane->fbdev;
 257         struct fb_var_screeninfo *var = &info->var;
 258         int r = 0;
 259
 260         switch (plane->color_mode) {
 261         case OMAPFB_COLOR_YUV422:
 262         case OMAPFB_COLOR_YUV420:
 263         case OMAPFB_COLOR_YUY422:
 264                 r = -EINVAL;
 265                 break;
 266         case OMAPFB_COLOR_CLUT_8BPP:
 267         case OMAPFB_COLOR_CLUT_4BPP:
 268         case OMAPFB_COLOR_CLUT_2BPP:
 269         case OMAPFB_COLOR_CLUT_1BPP:
 270                 if (fbdev->ctrl->setcolreg)
 271                         r = fbdev->ctrl->setcolreg(regno, red, green, blue,
 272                                                         transp, update_hw_pal);
 273                 /* Fallthrough */
 274         case OMAPFB_COLOR_RGB565:
 275         case OMAPFB_COLOR_RGB444:
 276                 if (r != 0)
 277                         break;
 278
 279                 if (regno < 16) {
 280                         u16 pal;
 281                         pal = ((red >> (16 - var->red.length)) <<
 282                                         var->red.offset) |
 283                               ((green >> (16 - var->green.length)) <<
 284                                         var->green.offset) |
 285                               (blue >> (16 - var->blue.length));
 286                         ((u32 *)(info->pseudo_palette))[regno] = pal;
 287                 }
 288                 break;
 289         default:
 290                 BUG();
 291         }
 292         return r;
 293 }
 294
 295 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 296                             u_int transp, struct fb_info *info)
 297 {
 298         return _setcolreg(info, regno, red, green, blue, transp, 1);
 299 }
 300
 301 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
 302 {
 303         int count, index, r;
 304         u16 *red, *green, *blue, *transp;
 305         u16 trans = 0xffff;
 306
 307         red     = cmap->red;
 308         green   = cmap->green;
 309         blue    = cmap->blue;
 310         transp  = cmap->transp;
 311         index   = cmap->start;
 312
 313         for (count = 0; count < cmap->len; count++) {
 314                 if (transp)
 315                         trans = *transp++;
 316                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
 317                                 count == cmap->len - 1);
 318                 if (r != 0)
 319                         return r;
 320         }
 321
 322         return 0;
 323 }
 324
 325 static int omapfb_update_full_screen(struct fb_info *fbi);
 326
 327 static int omapfb_blank(int blank, struct fb_info *fbi)
 328 {
 329         struct omapfb_plane_struct *plane = fbi->par;
 330         struct omapfb_device *fbdev = plane->fbdev;
 331         int do_update = 0;
 332         int r = 0;
 333
 334         omapfb_rqueue_lock(fbdev);
 335         switch (blank) {
 336         case FB_BLANK_UNBLANK:
 337                 if (fbdev->state == OMAPFB_SUSPENDED) {
 338                         if (fbdev->ctrl->resume)
 339                                 fbdev->ctrl->resume();
 340                         fbdev->panel->enable(fbdev->panel);
 341                         fbdev->state = OMAPFB_ACTIVE;
 342                         if (fbdev->ctrl->get_update_mode() ==
 343                                         OMAPFB_MANUAL_UPDATE)
 344                                 do_update = 1;
 345                 }
 346                 break;
 347         case FB_BLANK_POWERDOWN:
 348                 if (fbdev->state == OMAPFB_ACTIVE) {
 349                         fbdev->panel->disable(fbdev->panel);
 350                         if (fbdev->ctrl->suspend)
 351                                 fbdev->ctrl->suspend();
 352                         fbdev->state = OMAPFB_SUSPENDED;
 353                 }
 354                 break;
 355         default:
 356                 r = -EINVAL;
 357         }
 358         omapfb_rqueue_unlock(fbdev);
 359
 360         if (r == 0 && do_update)
 361                 r = omapfb_update_full_screen(fbi);
 362
 363         return r;
 364 }
 365
 366 static void omapfb_sync(struct fb_info *fbi)
 367 {
 368         struct omapfb_plane_struct *plane = fbi->par;
 369         struct omapfb_device *fbdev = plane->fbdev;
 370
 371         omapfb_rqueue_lock(fbdev);
 372         if (fbdev->ctrl->sync)
 373                 fbdev->ctrl->sync();
 374         omapfb_rqueue_unlock(fbdev);
 375 }
 376
 377 /*
 378  * Set fb_info.fix fields and also updates fbdev.
 379  * When calling this fb_info.var must be set up already.
 380  */
 381 static void set_fb_fix(struct fb_info *fbi, int from_init)
 382 {
 383         struct fb_fix_screeninfo *fix = &fbi->fix;
 384         struct fb_var_screeninfo *var = &fbi->var;
 385         struct omapfb_plane_struct *plane = fbi->par;
 386         struct omapfb_mem_region *rg;
 387         int bpp;
 388
 389         rg = &plane->fbdev->mem_desc.region[plane->idx];
 390         fbi->screen_base        = rg->vaddr;
 391
 392         if (!from_init) {
 393                 mutex_lock(&fbi->mm_lock);
 394                 fix->smem_start         = rg->paddr;
 395                 fix->smem_len           = rg->size;
 396                 mutex_unlock(&fbi->mm_lock);
 397         } else {
 398                 fix->smem_start         = rg->paddr;
 399                 fix->smem_len           = rg->size;
 400         }
 401
 402         fix->type = FB_TYPE_PACKED_PIXELS;
 403         bpp = var->bits_per_pixel;
 404         if (var->nonstd)
 405                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 406         else switch (var->bits_per_pixel) {
 407         case 16:
 408         case 12:
 409                 fix->visual = FB_VISUAL_TRUECOLOR;
 410                 /* 12bpp is stored in 16 bits */
 411                 bpp = 16;
 412                 break;
 413         case 1:
 414         case 2:
 415         case 4:
 416         case 8:
 417                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 418                 break;
 419         }
 420         fix->accel              = FB_ACCEL_OMAP1610;
 421         fix->line_length        = var->xres_virtual * bpp / 8;
 422 }
 423
 424 static int set_color_mode(struct omapfb_plane_struct *plane,
 425                           struct fb_var_screeninfo *var)
 426 {
 427         switch (var->nonstd) {
 428         case 0:
 429                 break;
 430         case OMAPFB_COLOR_YUV422:
 431                 var->bits_per_pixel = 16;
 432                 plane->color_mode = var->nonstd;
 433                 return 0;
 434         case OMAPFB_COLOR_YUV420:
 435                 var->bits_per_pixel = 12;
 436                 plane->color_mode = var->nonstd;
 437                 return 0;
 438         case OMAPFB_COLOR_YUY422:
 439                 var->bits_per_pixel = 16;
 440                 plane->color_mode = var->nonstd;
 441                 return 0;
 442         default:
 443                 return -EINVAL;
 444         }
 445
 446         switch (var->bits_per_pixel) {
 447         case 1:
 448                 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
 449                 return 0;
 450         case 2:
 451                 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
 452                 return 0;
 453         case 4:
 454                 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
 455                 return 0;
 456         case 8:
 457                 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
 458                 return 0;
 459         case 12:
 460                 var->bits_per_pixel = 16;
 461         case 16:
 462                 if (plane->fbdev->panel->bpp == 12)
 463                         plane->color_mode = OMAPFB_COLOR_RGB444;
 464                 else
 465                         plane->color_mode = OMAPFB_COLOR_RGB565;
 466                 return 0;
 467         default:
 468                 return -EINVAL;
 469         }
 470 }
 471
 472 /*
 473  * Check the values in var against our capabilities and in case of out of
 474  * bound values try to adjust them.
 475  */
 476 static int set_fb_var(struct fb_info *fbi,
 477                       struct fb_var_screeninfo *var)
 478 {
 479         int             bpp;
 480         unsigned long   max_frame_size;
 481         unsigned long   line_size;
 482         int             xres_min, xres_max;
 483         int             yres_min, yres_max;
 484         struct omapfb_plane_struct *plane = fbi->par;
 485         struct omapfb_device *fbdev = plane->fbdev;
 486         struct lcd_panel *panel = fbdev->panel;
 487
 488         if (set_color_mode(plane, var) < 0)
 489                 return -EINVAL;
 490
 491         bpp = var->bits_per_pixel;
 492         if (plane->color_mode == OMAPFB_COLOR_RGB444)
 493                 bpp = 16;
 494
 495         switch (var->rotate) {
 496         case 0:
 497         case 180:
 498                 xres_min = OMAPFB_PLANE_XRES_MIN;
 499                 xres_max = panel->x_res;
 500                 yres_min = OMAPFB_PLANE_YRES_MIN;
 501                 yres_max = panel->y_res;
 502                 if (cpu_is_omap15xx()) {
 503                         var->xres = panel->x_res;
 504                         var->yres = panel->y_res;
 505                 }
 506                 break;
 507         case 90:
 508         case 270:
 509                 xres_min = OMAPFB_PLANE_YRES_MIN;
 510                 xres_max = panel->y_res;
 511                 yres_min = OMAPFB_PLANE_XRES_MIN;
 512                 yres_max = panel->x_res;
 513                 if (cpu_is_omap15xx()) {
 514                         var->xres = panel->y_res;
 515                         var->yres = panel->x_res;
 516                 }
 517                 break;
 518         default:
 519                 return -EINVAL;
 520         }
 521
 522         if (var->xres < xres_min)
 523                 var->xres = xres_min;
 524         if (var->yres < yres_min)
 525                 var->yres = yres_min;
 526         if (var->xres > xres_max)
 527                 var->xres = xres_max;
 528         if (var->yres > yres_max)
 529                 var->yres = yres_max;
 530
 531         if (var->xres_virtual < var->xres)
 532                 var->xres_virtual = var->xres;
 533         if (var->yres_virtual < var->yres)
 534                 var->yres_virtual = var->yres;
 535         max_frame_size = fbdev->mem_desc.region[plane->idx].size;
 536         line_size = var->xres_virtual * bpp / 8;
 537         if (line_size * var->yres_virtual > max_frame_size) {
 538                 /* Try to keep yres_virtual first */
 539                 line_size = max_frame_size / var->yres_virtual;
 540                 var->xres_virtual = line_size * 8 / bpp;
 541                 if (var->xres_virtual < var->xres) {
 542                         /* Still doesn't fit. Shrink yres_virtual too */
 543                         var->xres_virtual = var->xres;
 544                         line_size = var->xres * bpp / 8;
 545                         var->yres_virtual = max_frame_size / line_size;
 546                 }
 547                 /* Recheck this, as the virtual size changed. */
 548                 if (var->xres_virtual < var->xres)
 549                         var->xres = var->xres_virtual;
 550                 if (var->yres_virtual < var->yres)
 551                         var->yres = var->yres_virtual;
 552                 if (var->xres < xres_min || var->yres < yres_min)
 553                         return -EINVAL;
 554         }
 555         if (var->xres + var->xoffset > var->xres_virtual)
 556                 var->xoffset = var->xres_virtual - var->xres;
 557         if (var->yres + var->yoffset > var->yres_virtual)
 558                 var->yoffset = var->yres_virtual - var->yres;
 559
 560         if (plane->color_mode == OMAPFB_COLOR_RGB444) {
 561                 var->red.offset   = 8; var->red.length   = 4;
 562                                                 var->red.msb_right   = 0;
 563                 var->green.offset = 4; var->green.length = 4;
 564                                                 var->green.msb_right = 0;
 565                 var->blue.offset  = 0; var->blue.length  = 4;
 566                                                 var->blue.msb_right  = 0;
 567         } else {
 568                 var->red.offset  = 11; var->red.length   = 5;
 569                                                 var->red.msb_right   = 0;
 570                 var->green.offset = 5;  var->green.length = 6;
 571                                                 var->green.msb_right = 0;
 572                 var->blue.offset = 0;  var->blue.length  = 5;
 573                                                 var->blue.msb_right  = 0;
 574         }
 575
 576         var->height             = -1;
 577         var->width              = -1;
 578         var->grayscale          = 0;
 579
 580         /* pixclock in ps, the rest in pixclock */
 581         var->pixclock           = 10000000 / (panel->pixel_clock / 100);
 582         var->left_margin        = panel->hfp;
 583         var->right_margin       = panel->hbp;
 584         var->upper_margin       = panel->vfp;
 585         var->lower_margin       = panel->vbp;
 586         var->hsync_len          = panel->hsw;
 587         var->vsync_len          = panel->vsw;
 588
 589         /* TODO: get these from panel->config */
 590         var->vmode              = FB_VMODE_NONINTERLACED;
 591         var->sync               = 0;
 592
 593         return 0;
 594 }
 595
 596
 597 /*
 598  * Set new x,y offsets in the virtual display for the visible area and switch
 599  * to the new mode.
 600  */
 601 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 602                                struct fb_info *fbi)
 603 {
 604         struct omapfb_plane_struct *plane = fbi->par;
 605         struct omapfb_device *fbdev = plane->fbdev;
 606         int r = 0;
 607
 608         omapfb_rqueue_lock(fbdev);
 609         if (var->xoffset != fbi->var.xoffset ||
 610             var->yoffset != fbi->var.yoffset) {
 611                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 612
 613                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 614                 new_var->xoffset = var->xoffset;
 615                 new_var->yoffset = var->yoffset;
 616                 if (set_fb_var(fbi, new_var))
 617                         r = -EINVAL;
 618                 else {
 619                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 620                         ctrl_change_mode(fbi);
 621                 }
 622         }
 623         omapfb_rqueue_unlock(fbdev);
 624
 625         return r;
 626 }
 627
 628 /* Set mirror to vertical axis and switch to the new mode. */
 629 static int omapfb_mirror(struct fb_info *fbi, int mirror)
 630 {
 631         struct omapfb_plane_struct *plane = fbi->par;
 632         struct omapfb_device *fbdev = plane->fbdev;
 633         int r = 0;
 634
 635         omapfb_rqueue_lock(fbdev);
 636         mirror = mirror ? 1 : 0;
 637         if (cpu_is_omap15xx())
 638                 r = -EINVAL;
 639         else if (mirror != plane->info.mirror) {
 640                 plane->info.mirror = mirror;
 641                 r = ctrl_change_mode(fbi);
 642         }
 643         omapfb_rqueue_unlock(fbdev);
 644
 645         return r;
 646 }
 647
 648 /*
 649  * Check values in var, try to adjust them in case of out of bound values if
 650  * possible, or return error.
 651  */
 652 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 653 {
 654         struct omapfb_plane_struct *plane = fbi->par;
 655         struct omapfb_device *fbdev = plane->fbdev;
 656         int r;
 657
 658         omapfb_rqueue_lock(fbdev);
 659         if (fbdev->ctrl->sync != NULL)
 660                 fbdev->ctrl->sync();
 661         r = set_fb_var(fbi, var);
 662         omapfb_rqueue_unlock(fbdev);
 663
 664         return r;
 665 }
 666
 667 /*
 668  * Switch to a new mode. The parameters for it has been check already by
 669  * omapfb_check_var.
 670  */
 671 static int omapfb_set_par(struct fb_info *fbi)
 672 {
 673         struct omapfb_plane_struct *plane = fbi->par;
 674         struct omapfb_device *fbdev = plane->fbdev;
 675         int r = 0;
 676
 677         omapfb_rqueue_lock(fbdev);
 678         set_fb_fix(fbi, 0);
 679         r = ctrl_change_mode(fbi);
 680         omapfb_rqueue_unlock(fbdev);
 681
 682         return r;
 683 }
 684
 685 int omapfb_update_window_async(struct fb_info *fbi,
 686                                 struct omapfb_update_window *win,
 687                                 void (*callback)(void *),
 688                                 void *callback_data)
 689 {
 690         int xres, yres;
 691         struct omapfb_plane_struct *plane = fbi->par;
 692         struct omapfb_device *fbdev = plane->fbdev;
 693         struct fb_var_screeninfo *var = &fbi->var;
 694
 695         switch (var->rotate) {
 696         case 0:
 697         case 180:
 698                 xres = fbdev->panel->x_res;
 699                 yres = fbdev->panel->y_res;
 700                 break;
 701         case 90:
 702         case 270:
 703                 xres = fbdev->panel->y_res;
 704                 yres = fbdev->panel->x_res;
 705                 break;
 706         default:
 707                 return -EINVAL;
 708         }
 709
 710         if (win->x >= xres || win->y >= yres ||
 711             win->out_x > xres || win->out_y > yres)
 712                 return -EINVAL;
 713
 714         if (!fbdev->ctrl->update_window ||
 715             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 716                 return -ENODEV;
 717
 718         if (win->x + win->width > xres)
 719                 win->width = xres - win->x;
 720         if (win->y + win->height > yres)
 721                 win->height = yres - win->y;
 722         if (win->out_x + win->out_width > xres)
 723                 win->out_width = xres - win->out_x;
 724         if (win->out_y + win->out_height > yres)
 725                 win->out_height = yres - win->out_y;
 726         if (!win->width || !win->height || !win->out_width || !win->out_height)
 727                 return 0;
 728
 729         return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
 730 }
 731 EXPORT_SYMBOL(omapfb_update_window_async);
 732
 733 static int omapfb_update_win(struct fb_info *fbi,
 734                                 struct omapfb_update_window *win)
 735 {
 736         struct omapfb_plane_struct *plane = fbi->par;
 737         int ret;
 738
 739         omapfb_rqueue_lock(plane->fbdev);
 740         ret = omapfb_update_window_async(fbi, win, NULL, NULL);
 741         omapfb_rqueue_unlock(plane->fbdev);
 742
 743         return ret;
 744 }
 745
 746 static int omapfb_update_full_screen(struct fb_info *fbi)
 747 {
 748         struct omapfb_plane_struct *plane = fbi->par;
 749         struct omapfb_device *fbdev = plane->fbdev;
 750         struct omapfb_update_window win;
 751         int r;
 752
 753         if (!fbdev->ctrl->update_window ||
 754             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 755                 return -ENODEV;
 756
 757         win.x = 0;
 758         win.y = 0;
 759         win.width = fbi->var.xres;
 760         win.height = fbi->var.yres;
 761         win.out_x = 0;
 762         win.out_y = 0;
 763         win.out_width = fbi->var.xres;
 764         win.out_height = fbi->var.yres;
 765         win.format = 0;
 766
 767         omapfb_rqueue_lock(fbdev);
 768         r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
 769         omapfb_rqueue_unlock(fbdev);
 770
 771         return r;
 772 }
 773
 774 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 775 {
 776         struct omapfb_plane_struct *plane = fbi->par;
 777         struct omapfb_device *fbdev = plane->fbdev;
 778         struct lcd_panel *panel = fbdev->panel;
 779         struct omapfb_plane_info old_info;
 780         int r = 0;
 781
 782         if (pi->pos_x + pi->out_width > panel->x_res ||
 783             pi->pos_y + pi->out_height > panel->y_res)
 784                 return -EINVAL;
 785
 786         omapfb_rqueue_lock(fbdev);
 787         if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
 788                 /*
 789                  * This plane's memory was freed, can't enable it
 790                  * until it's reallocated.
 791                  */
 792                 r = -EINVAL;
 793                 goto out;
 794         }
 795         old_info = plane->info;
 796         plane->info = *pi;
 797         if (pi->enabled) {
 798                 r = ctrl_change_mode(fbi);
 799                 if (r < 0) {
 800                         plane->info = old_info;
 801                         goto out;
 802                 }
 803         }
 804         r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
 805         if (r < 0) {
 806                 plane->info = old_info;
 807                 goto out;
 808         }
 809 out:
 810         omapfb_rqueue_unlock(fbdev);
 811         return r;
 812 }
 813
 814 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 815 {
 816         struct omapfb_plane_struct *plane = fbi->par;
 817
 818         *pi = plane->info;
 819         return 0;
 820 }
 821
 822 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 823 {
 824         struct omapfb_plane_struct *plane = fbi->par;
 825         struct omapfb_device *fbdev = plane->fbdev;
 826         struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
 827         size_t size;
 828         int r = 0;
 829
 830         if (fbdev->ctrl->setup_mem == NULL)
 831                 return -ENODEV;
 832         if (mi->type != OMAPFB_MEMTYPE_SDRAM)
 833                 return -EINVAL;
 834
 835         size = PAGE_ALIGN(mi->size);
 836         omapfb_rqueue_lock(fbdev);
 837         if (plane->info.enabled) {
 838                 r = -EBUSY;
 839                 goto out;
 840         }
 841         if (rg->size != size || rg->type != mi->type) {
 842                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 843                 unsigned long old_size = rg->size;
 844                 u8            old_type = rg->type;
 845                 unsigned long paddr;
 846
 847                 rg->size = size;
 848                 rg->type = mi->type;
 849                 /*
 850                  * size == 0 is a special case, for which we
 851                  * don't check / adjust the screen parameters.
 852                  * This isn't a problem since the plane can't
 853                  * be reenabled unless its size is > 0.
 854                  */
 855                 if (old_size != size && size) {
 856                         if (size) {
 857                                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 858                                 r = set_fb_var(fbi, new_var);
 859                                 if (r < 0)
 860                                         goto out;
 861                         }
 862                 }
 863
 864                 if (fbdev->ctrl->sync)
 865                         fbdev->ctrl->sync();
 866                 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
 867                 if (r < 0) {
 868                         /* Revert changes. */
 869                         rg->size = old_size;
 870                         rg->type = old_type;
 871                         goto out;
 872                 }
 873                 rg->paddr = paddr;
 874
 875                 if (old_size != size) {
 876                         if (size) {
 877                                 memcpy(&fbi->var, new_var, sizeof(fbi->var));
 878                                 set_fb_fix(fbi, 0);
 879                         } else {
 880                                 /*
 881                                  * Set these explicitly to indicate that the
 882                                  * plane memory is dealloce'd, the other
 883                                  * screen parameters in var / fix are invalid.
 884                                  */
 885                                 mutex_lock(&fbi->mm_lock);
 886                                 fbi->fix.smem_start = 0;
 887                                 fbi->fix.smem_len = 0;
 888                                 mutex_unlock(&fbi->mm_lock);
 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, NULL);
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         case OMAPFB_MIRROR:
1081                 if (get_user(p.mirror, (int __user *)arg))
1082                         r = -EFAULT;
1083                 else
1084                         omapfb_mirror(fbi, p.mirror);
1085                 break;
1086         case OMAPFB_SYNC_GFX:
1087                 omapfb_sync(fbi);
1088                 break;
1089         case OMAPFB_VSYNC:
1090                 break;
1091         case OMAPFB_SET_UPDATE_MODE:
1092                 if (get_user(p.update_mode, (int __user *)arg))
1093                         r = -EFAULT;
1094                 else
1095                         r = omapfb_set_update_mode(fbdev, p.update_mode);
1096                 break;
1097         case OMAPFB_GET_UPDATE_MODE:
1098                 p.update_mode = omapfb_get_update_mode(fbdev);
1099                 if (put_user(p.update_mode,
1100                                         (enum omapfb_update_mode __user *)arg))
1101                         r = -EFAULT;
1102                 break;
1103         case OMAPFB_UPDATE_WINDOW_OLD:
1104                 if (copy_from_user(&p.update_window, (void __user *)arg,
1105                                    sizeof(struct omapfb_update_window_old)))
1106                         r = -EFAULT;
1107                 else {
1108                         struct omapfb_update_window *u = &p.update_window;
1109                         u->out_x = u->x;
1110                         u->out_y = u->y;
1111                         u->out_width = u->width;
1112                         u->out_height = u->height;
1113                         memset(u->reserved, 0, sizeof(u->reserved));
1114                         r = omapfb_update_win(fbi, u);
1115                 }
1116                 break;
1117         case OMAPFB_UPDATE_WINDOW:
1118                 if (copy_from_user(&p.update_window, (void __user *)arg,
1119                                    sizeof(p.update_window)))
1120                         r = -EFAULT;
1121                 else
1122                         r = omapfb_update_win(fbi, &p.update_window);
1123                 break;
1124         case OMAPFB_SETUP_PLANE:
1125                 if (copy_from_user(&p.plane_info, (void __user *)arg,
1126                                    sizeof(p.plane_info)))
1127                         r = -EFAULT;
1128                 else
1129                         r = omapfb_setup_plane(fbi, &p.plane_info);
1130                 break;
1131         case OMAPFB_QUERY_PLANE:
1132                 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1133                         break;
1134                 if (copy_to_user((void __user *)arg, &p.plane_info,
1135                                    sizeof(p.plane_info)))
1136                         r = -EFAULT;
1137                 break;
1138         case OMAPFB_SETUP_MEM:
1139                 if (copy_from_user(&p.mem_info, (void __user *)arg,
1140                                    sizeof(p.mem_info)))
1141                         r = -EFAULT;
1142                 else
1143                         r = omapfb_setup_mem(fbi, &p.mem_info);
1144                 break;
1145         case OMAPFB_QUERY_MEM:
1146                 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1147                         break;
1148                 if (copy_to_user((void __user *)arg, &p.mem_info,
1149                                    sizeof(p.mem_info)))
1150                         r = -EFAULT;
1151                 break;
1152         case OMAPFB_SET_COLOR_KEY:
1153                 if (copy_from_user(&p.color_key, (void __user *)arg,
1154                                    sizeof(p.color_key)))
1155                         r = -EFAULT;
1156                 else
1157                         r = omapfb_set_color_key(fbdev, &p.color_key);
1158                 break;
1159         case OMAPFB_GET_COLOR_KEY:
1160                 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1161                         break;
1162                 if (copy_to_user((void __user *)arg, &p.color_key,
1163                                  sizeof(p.color_key)))
1164                         r = -EFAULT;
1165                 break;
1166         case OMAPFB_GET_CAPS:
1167                 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1168                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1169                         r = -EFAULT;
1170                 break;
1171         case OMAPFB_LCD_TEST:
1172                 {
1173                         int test_num;
1174
1175                         if (get_user(test_num, (int __user *)arg)) {
1176                                 r = -EFAULT;
1177                                 break;
1178                         }
1179                         if (!fbdev->panel->run_test) {
1180                                 r = -EINVAL;
1181                                 break;
1182                         }
1183                         r = fbdev->panel->run_test(fbdev->panel, test_num);
1184                         break;
1185                 }
1186         case OMAPFB_CTRL_TEST:
1187                 {
1188                         int test_num;
1189
1190                         if (get_user(test_num, (int __user *)arg)) {
1191                                 r = -EFAULT;
1192                                 break;
1193                         }
1194                         if (!fbdev->ctrl->run_test) {
1195                                 r = -EINVAL;
1196                                 break;
1197                         }
1198                         r = fbdev->ctrl->run_test(test_num);
1199                         break;
1200                 }
1201         default:
1202                 r = -EINVAL;
1203         }
1204
1205         return r;
1206 }
1207
1208 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1209 {
1210         struct omapfb_plane_struct *plane = info->par;
1211         struct omapfb_device *fbdev = plane->fbdev;
1212         int r;
1213
1214         omapfb_rqueue_lock(fbdev);
1215         r = fbdev->ctrl->mmap(info, vma);
1216         omapfb_rqueue_unlock(fbdev);
1217
1218         return r;
1219 }
1220
1221 /*
1222  * Callback table for the frame buffer framework. Some of these pointers
1223  * will be changed according to the current setting of fb_info->accel_flags.
1224  */
1225 static struct fb_ops omapfb_ops = {
1226         .owner          = THIS_MODULE,
1227         .fb_open        = omapfb_open,
1228         .fb_release     = omapfb_release,
1229         .fb_setcolreg   = omapfb_setcolreg,
1230         .fb_setcmap     = omapfb_setcmap,
1231         .fb_fillrect    = cfb_fillrect,
1232         .fb_copyarea    = cfb_copyarea,
1233         .fb_imageblit   = cfb_imageblit,
1234         .fb_blank       = omapfb_blank,
1235         .fb_ioctl       = omapfb_ioctl,
1236         .fb_check_var   = omapfb_check_var,
1237         .fb_set_par     = omapfb_set_par,
1238         .fb_pan_display = omapfb_pan_display,
1239 };
1240
1241 /*
1242  * ---------------------------------------------------------------------------
1243  * Sysfs interface
1244  * ---------------------------------------------------------------------------
1245  */
1246 /* omapfbX sysfs entries */
1247 static ssize_t omapfb_show_caps_num(struct device *dev,
1248                                     struct device_attribute *attr, char *buf)
1249 {
1250         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1251         int plane;
1252         size_t size;
1253         struct omapfb_caps caps;
1254
1255         plane = 0;
1256         size = 0;
1257         while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1258                 omapfb_get_caps(fbdev, plane, &caps);
1259                 size += snprintf(&buf[size], PAGE_SIZE - size,
1260                         "plane#%d %#010x %#010x %#010x\n",
1261                         plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1262                 plane++;
1263         }
1264         return size;
1265 }
1266
1267 static ssize_t omapfb_show_caps_text(struct device *dev,
1268                                      struct device_attribute *attr, char *buf)
1269 {
1270         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1271         int i;
1272         struct omapfb_caps caps;
1273         int plane;
1274         size_t size;
1275
1276         plane = 0;
1277         size = 0;
1278         while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1279                 omapfb_get_caps(fbdev, plane, &caps);
1280                 size += snprintf(&buf[size], PAGE_SIZE - size,
1281                                  "plane#%d:\n", plane);
1282                 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1283                      size < PAGE_SIZE; i++) {
1284                         if (ctrl_caps[i].flag & caps.ctrl)
1285                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1286                                         " %s\n", ctrl_caps[i].name);
1287                 }
1288                 size += snprintf(&buf[size], PAGE_SIZE - size,
1289                                  " plane colors:\n");
1290                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1291                      size < PAGE_SIZE; i++) {
1292                         if (color_caps[i].flag & caps.plane_color)
1293                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1294                                         "  %s\n", color_caps[i].name);
1295                 }
1296                 size += snprintf(&buf[size], PAGE_SIZE - size,
1297                                  " window colors:\n");
1298                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1299                      size < PAGE_SIZE; i++) {
1300                         if (color_caps[i].flag & caps.wnd_color)
1301                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1302                                         "  %s\n", color_caps[i].name);
1303                 }
1304
1305                 plane++;
1306         }
1307         return size;
1308 }
1309
1310 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1311 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1312
1313 /* panel sysfs entries */
1314 static ssize_t omapfb_show_panel_name(struct device *dev,
1315                                       struct device_attribute *attr, char *buf)
1316 {
1317         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1318
1319         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1320 }
1321
1322 static ssize_t omapfb_show_bklight_level(struct device *dev,
1323                                          struct device_attribute *attr,
1324                                          char *buf)
1325 {
1326         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1327         int r;
1328
1329         if (fbdev->panel->get_bklight_level) {
1330                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1331                              fbdev->panel->get_bklight_level(fbdev->panel));
1332         } else
1333                 r = -ENODEV;
1334         return r;
1335 }
1336
1337 static ssize_t omapfb_store_bklight_level(struct device *dev,
1338                                           struct device_attribute *attr,
1339                                           const char *buf, size_t size)
1340 {
1341         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1342         int r;
1343
1344         if (fbdev->panel->set_bklight_level) {
1345                 unsigned int level;
1346
1347                 if (sscanf(buf, "%10d", &level) == 1) {
1348                         r = fbdev->panel->set_bklight_level(fbdev->panel,
1349                                                             level);
1350                 } else
1351                         r = -EINVAL;
1352         } else
1353                 r = -ENODEV;
1354         return r ? r : size;
1355 }
1356
1357 static ssize_t omapfb_show_bklight_max(struct device *dev,
1358                                        struct device_attribute *attr, char *buf)
1359 {
1360         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1361         int r;
1362
1363         if (fbdev->panel->get_bklight_level) {
1364                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1365                              fbdev->panel->get_bklight_max(fbdev->panel));
1366         } else
1367                 r = -ENODEV;
1368         return r;
1369 }
1370
1371 static struct device_attribute dev_attr_panel_name =
1372         __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1373 static DEVICE_ATTR(backlight_level, 0664,
1374                    omapfb_show_bklight_level, omapfb_store_bklight_level);
1375 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1376
1377 static struct attribute *panel_attrs[] = {
1378         &dev_attr_panel_name.attr,
1379         &dev_attr_backlight_level.attr,
1380         &dev_attr_backlight_max.attr,
1381         NULL,
1382 };
1383
1384 static struct attribute_group panel_attr_grp = {
1385         .name  = "panel",
1386         .attrs = panel_attrs,
1387 };
1388
1389 /* ctrl sysfs entries */
1390 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1391                                      struct device_attribute *attr, char *buf)
1392 {
1393         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1394
1395         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1396 }
1397
1398 static struct device_attribute dev_attr_ctrl_name =
1399         __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1400
1401 static struct attribute *ctrl_attrs[] = {
1402         &dev_attr_ctrl_name.attr,
1403         NULL,
1404 };
1405
1406 static struct attribute_group ctrl_attr_grp = {
1407         .name  = "ctrl",
1408         .attrs = ctrl_attrs,
1409 };
1410
1411 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1412 {
1413         int r;
1414
1415         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1416                 goto fail0;
1417
1418         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1419                 goto fail1;
1420
1421         if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1422                 goto fail2;
1423
1424         if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1425                 goto fail3;
1426
1427         return 0;
1428 fail3:
1429         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1430 fail2:
1431         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1432 fail1:
1433         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1434 fail0:
1435         dev_err(fbdev->dev, "unable to register sysfs interface\n");
1436         return r;
1437 }
1438
1439 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1440 {
1441         sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1442         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1443         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1444         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1445 }
1446
1447 /*
1448  * ---------------------------------------------------------------------------
1449  * LDM callbacks
1450  * ---------------------------------------------------------------------------
1451  */
1452 /* Initialize system fb_info object and set the default video mode.
1453  * The frame buffer memory already allocated by lcddma_init
1454  */
1455 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1456 {
1457         struct fb_var_screeninfo        *var = &info->var;
1458         struct fb_fix_screeninfo        *fix = &info->fix;
1459         int                             r = 0;
1460
1461         info->fbops = &omapfb_ops;
1462         info->flags = FBINFO_FLAG_DEFAULT;
1463
1464         strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1465
1466         info->pseudo_palette = fbdev->pseudo_palette;
1467
1468         var->accel_flags  = def_accel ? FB_ACCELF_TEXT : 0;
1469         var->xres = def_vxres;
1470         var->yres = def_vyres;
1471         var->xres_virtual = def_vxres;
1472         var->yres_virtual = def_vyres;
1473         var->rotate       = def_rotate;
1474         var->bits_per_pixel = fbdev->panel->bpp;
1475
1476         set_fb_var(info, var);
1477         set_fb_fix(info, 1);
1478
1479         r = fb_alloc_cmap(&info->cmap, 16, 0);
1480         if (r != 0)
1481                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1482
1483         return r;
1484 }
1485
1486 /* Release the fb_info object */
1487 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1488 {
1489         fb_dealloc_cmap(&fbi->cmap);
1490 }
1491
1492 static void planes_cleanup(struct omapfb_device *fbdev)
1493 {
1494         int i;
1495
1496         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1497                 if (fbdev->fb_info[i] == NULL)
1498                         break;
1499                 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1500                 framebuffer_release(fbdev->fb_info[i]);
1501         }
1502 }
1503
1504 static int planes_init(struct omapfb_device *fbdev)
1505 {
1506         struct fb_info *fbi;
1507         int i;
1508         int r;
1509
1510         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1511                 struct omapfb_plane_struct *plane;
1512                 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1513                                         fbdev->dev);
1514                 if (fbi == NULL) {
1515                         dev_err(fbdev->dev,
1516                                 "unable to allocate memory for plane info\n");
1517                         planes_cleanup(fbdev);
1518                         return -ENOMEM;
1519                 }
1520                 plane = fbi->par;
1521                 plane->idx = i;
1522                 plane->fbdev = fbdev;
1523                 plane->info.mirror = def_mirror;
1524                 fbdev->fb_info[i] = fbi;
1525
1526                 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1527                         framebuffer_release(fbi);
1528                         planes_cleanup(fbdev);
1529                         return r;
1530                 }
1531                 plane->info.out_width = fbi->var.xres;
1532                 plane->info.out_height = fbi->var.yres;
1533         }
1534         return 0;
1535 }
1536
1537 /*
1538  * Free driver resources. Can be called to rollback an aborted initialization
1539  * sequence.
1540  */
1541 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1542 {
1543         int i;
1544
1545         switch (state) {
1546         case OMAPFB_ACTIVE:
1547                 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1548                         unregister_framebuffer(fbdev->fb_info[i]);
1549         case 7:
1550                 omapfb_unregister_sysfs(fbdev);
1551         case 6:
1552                 fbdev->panel->disable(fbdev->panel);
1553         case 5:
1554                 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1555         case 4:
1556                 planes_cleanup(fbdev);
1557         case 3:
1558                 ctrl_cleanup(fbdev);
1559         case 2:
1560                 fbdev->panel->cleanup(fbdev->panel);
1561         case 1:
1562                 dev_set_drvdata(fbdev->dev, NULL);
1563                 kfree(fbdev);
1564         case 0:
1565                 /* nothing to free */
1566                 break;
1567         default:
1568                 BUG();
1569         }
1570 }
1571
1572 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1573 {
1574         struct omapfb_platform_data *conf;
1575         char name[17];
1576         int i;
1577
1578         conf = dev_get_platdata(fbdev->dev);
1579
1580         fbdev->ctrl = NULL;
1581
1582         strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1583         name[sizeof(name) - 1] = '\0';
1584
1585         if (strcmp(name, "internal") == 0) {
1586                 fbdev->ctrl = fbdev->int_ctrl;
1587                 return 0;
1588         }
1589
1590         for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1591                 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1592                 if (strcmp(ctrls[i]->name, name) == 0) {
1593                         fbdev->ctrl = ctrls[i];
1594                         break;
1595                 }
1596         }
1597
1598         if (fbdev->ctrl == NULL) {
1599                 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1600                 return -1;
1601         }
1602
1603         return 0;
1604 }
1605
1606 static void check_required_callbacks(struct omapfb_device *fbdev)
1607 {
1608 #define _C(x) (fbdev->ctrl->x != NULL)
1609 #define _P(x) (fbdev->panel->x != NULL)
1610         BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1611         BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1612                  _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1613                  _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1614                  _P(get_caps)));
1615 #undef _P
1616 #undef _C
1617 }
1618
1619 /*
1620  * Called by LDM binding to probe and attach a new device.
1621  * Initialization sequence:
1622  *   1. allocate system omapfb_device structure
1623  *   2. select controller type according to platform configuration
1624  *      init LCD panel
1625  *   3. init LCD controller and LCD DMA
1626  *   4. init system fb_info structure for all planes
1627  *   5. setup video mode for first plane and enable it
1628  *   6. enable LCD panel
1629  *   7. register sysfs attributes
1630  *   OMAPFB_ACTIVE: register system fb_info structure for all planes
1631  */
1632 static int omapfb_do_probe(struct platform_device *pdev,
1633                                 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 (dev_get_platdata(&pdev->dev) == 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         fbdev->dssdev = &omapdss_device;
1668         platform_set_drvdata(pdev, fbdev);
1669
1670         mutex_init(&fbdev->rqueue_mutex);
1671
1672         fbdev->int_ctrl = &omap1_int_ctrl;
1673 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1674         fbdev->ext_if = &omap1_ext_if;
1675 #endif
1676         if (omapfb_find_ctrl(fbdev) < 0) {
1677                 dev_err(fbdev->dev,
1678                         "LCD controller not found, board not supported\n");
1679                 r = -ENODEV;
1680                 goto cleanup;
1681         }
1682
1683         r = fbdev->panel->init(fbdev->panel, fbdev);
1684         if (r)
1685                 goto cleanup;
1686
1687         pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1688
1689         def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res;
1690         def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res;
1691
1692         init_state++;
1693
1694         r = ctrl_init(fbdev);
1695         if (r)
1696                 goto cleanup;
1697         if (fbdev->ctrl->mmap != NULL)
1698                 omapfb_ops.fb_mmap = omapfb_mmap;
1699         init_state++;
1700
1701         check_required_callbacks(fbdev);
1702
1703         r = planes_init(fbdev);
1704         if (r)
1705                 goto cleanup;
1706         init_state++;
1707
1708 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1709         /* Set DMA priority for EMIFF access to highest */
1710         omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1711 #endif
1712
1713         r = ctrl_change_mode(fbdev->fb_info[0]);
1714         if (r) {
1715                 dev_err(fbdev->dev, "mode setting failed\n");
1716                 goto cleanup;
1717         }
1718
1719         /* GFX plane is enabled by default */
1720         r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1721         if (r)
1722                 goto cleanup;
1723
1724         omapfb_set_update_mode(fbdev, manual_update ?
1725                                    OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1726         init_state++;
1727
1728         r = fbdev->panel->enable(fbdev->panel);
1729         if (r)
1730                 goto cleanup;
1731         init_state++;
1732
1733         r = omapfb_register_sysfs(fbdev);
1734         if (r)
1735                 goto cleanup;
1736         init_state++;
1737
1738         vram = 0;
1739         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1740                 r = register_framebuffer(fbdev->fb_info[i]);
1741                 if (r != 0) {
1742                         dev_err(fbdev->dev,
1743                                 "registering framebuffer %d failed\n", i);
1744                         goto cleanup;
1745                 }
1746                 vram += fbdev->mem_desc.region[i].size;
1747         }
1748
1749         fbdev->state = OMAPFB_ACTIVE;
1750
1751         panel = fbdev->panel;
1752         phz = panel->pixel_clock * 1000;
1753         hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1754         vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1755
1756         omapfb_dev = fbdev;
1757
1758         pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1759                         vram, fbdev->mem_desc.region_cnt);
1760         pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1761                         "vfreq %lu.%lu Hz\n",
1762                         phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1763
1764         return 0;
1765
1766 cleanup:
1767         omapfb_free_resources(fbdev, init_state);
1768
1769         return r;
1770 }
1771
1772 static int omapfb_probe(struct platform_device *pdev)
1773 {
1774         int r;
1775
1776         BUG_ON(fbdev_pdev != NULL);
1777
1778         r = platform_device_register(&omapdss_device);
1779         if (r) {
1780                 dev_err(&pdev->dev, "can't register omapdss device\n");
1781                 return r;
1782         }
1783
1784         /* Delay actual initialization until the LCD is registered */
1785         fbdev_pdev = pdev;
1786         if (fbdev_panel != NULL)
1787                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1788         return 0;
1789 }
1790
1791 void omapfb_register_panel(struct lcd_panel *panel)
1792 {
1793         BUG_ON(fbdev_panel != NULL);
1794
1795         fbdev_panel = panel;
1796         if (fbdev_pdev != NULL)
1797                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1798 }
1799 EXPORT_SYMBOL_GPL(omapfb_register_panel);
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         platform_device_unregister(&omapdss_device);
1813         fbdev->dssdev = NULL;
1814
1815         return 0;
1816 }
1817
1818 /* PM suspend */
1819 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1820 {
1821         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1822
1823         if (fbdev != NULL)
1824                 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]);
1825         return 0;
1826 }
1827
1828 /* PM resume */
1829 static int omapfb_resume(struct platform_device *pdev)
1830 {
1831         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1832
1833         if (fbdev != NULL)
1834                 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]);
1835         return 0;
1836 }
1837
1838 static struct platform_driver omapfb_driver = {
1839         .probe          = omapfb_probe,
1840         .remove         = omapfb_remove,
1841         .suspend        = omapfb_suspend,
1842         .resume         = omapfb_resume,
1843         .driver         = {
1844                 .name   = MODULE_NAME,
1845         },
1846 };
1847
1848 #ifndef MODULE
1849
1850 /* Process kernel command line parameters */
1851 static int __init omapfb_setup(char *options)
1852 {
1853         char *this_opt = NULL;
1854         int r = 0;
1855
1856         pr_debug("omapfb: options %s\n", options);
1857
1858         if (!options || !*options)
1859                 return 0;
1860
1861         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1862                 if (!strncmp(this_opt, "accel", 5))
1863                         def_accel = 1;
1864                 else if (!strncmp(this_opt, "vram:", 5)) {
1865                         char *suffix;
1866                         unsigned long vram;
1867                         vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1868                         switch (suffix[0]) {
1869                         case '\0':
1870                                 break;
1871                         case 'm':
1872                         case 'M':
1873                                 vram *= 1024;
1874                                 /* Fall through */
1875                         case 'k':
1876                         case 'K':
1877                                 vram *= 1024;
1878                                 break;
1879                         default:
1880                                 pr_debug("omapfb: invalid vram suffix %c\n",
1881                                          suffix[0]);
1882                                 r = -1;
1883                         }
1884                         def_vram[def_vram_cnt++] = vram;
1885                 }
1886                 else if (!strncmp(this_opt, "vxres:", 6))
1887                         def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1888                 else if (!strncmp(this_opt, "vyres:", 6))
1889                         def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1890                 else if (!strncmp(this_opt, "rotate:", 7))
1891                         def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1892                 else if (!strncmp(this_opt, "mirror:", 7))
1893                         def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1894                 else if (!strncmp(this_opt, "manual_update", 13))
1895                         manual_update = 1;
1896                 else {
1897                         pr_debug("omapfb: invalid option\n");
1898                         r = -1;
1899                 }
1900         }
1901
1902         return r;
1903 }
1904
1905 #endif
1906
1907 /* Register both the driver and the device */
1908 static int __init omapfb_init(void)
1909 {
1910 #ifndef MODULE
1911         char *option;
1912
1913         if (fb_get_options("omapfb", &option))
1914                 return -ENODEV;
1915         omapfb_setup(option);
1916 #endif
1917         /* Register the driver with LDM */
1918         if (platform_driver_register(&omapfb_driver)) {
1919                 pr_debug("failed to register omapfb driver\n");
1920                 return -ENODEV;
1921         }
1922
1923         return 0;
1924 }
1925
1926 static void __exit omapfb_cleanup(void)
1927 {
1928         platform_driver_unregister(&omapfb_driver);
1929 }
1930
1931 module_param_named(accel, def_accel, uint, 0664);
1932 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1933 module_param_named(vxres, def_vxres, long, 0664);
1934 module_param_named(vyres, def_vyres, long, 0664);
1935 module_param_named(rotate, def_rotate, uint, 0664);
1936 module_param_named(mirror, def_mirror, uint, 0664);
1937 module_param_named(manual_update, manual_update, bool, 0664);
1938
1939 module_init(omapfb_init);
1940 module_exit(omapfb_cleanup);
1941
1942 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1943 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1944 MODULE_LICENSE("GPL");