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/mm.h>
  29 #include <linux/uaccess.h>
  30
  31 #include <mach/dma.h>
  32 #include <mach/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_WINDOW_ROTATE,  "rotate window" },
  68         { OMAPFB_CAPS_SET_BACKLIGHT,  "backlight setting" },
  69 };
  70
  71 static struct caps_table_struct color_caps[] = {
  72         { 1 << OMAPFB_COLOR_RGB565,     "RGB565", },
  73         { 1 << OMAPFB_COLOR_YUV422,     "YUV422", },
  74         { 1 << OMAPFB_COLOR_YUV420,     "YUV420", },
  75         { 1 << OMAPFB_COLOR_CLUT_8BPP,  "CLUT8", },
  76         { 1 << OMAPFB_COLOR_CLUT_4BPP,  "CLUT4", },
  77         { 1 << OMAPFB_COLOR_CLUT_2BPP,  "CLUT2", },
  78         { 1 << OMAPFB_COLOR_CLUT_1BPP,  "CLUT1", },
  79         { 1 << OMAPFB_COLOR_RGB444,     "RGB444", },
  80         { 1 << OMAPFB_COLOR_YUY422,     "YUY422", },
  81 };
  82
  83 /*
  84  * ---------------------------------------------------------------------------
  85  * LCD panel
  86  * ---------------------------------------------------------------------------
  87  */
  88 extern struct lcd_ctrl omap1_int_ctrl;
  89 extern struct lcd_ctrl omap2_int_ctrl;
  90 extern struct lcd_ctrl hwa742_ctrl;
  91 extern struct lcd_ctrl blizzard_ctrl;
  92
  93 static struct lcd_ctrl *ctrls[] = {
  94 #ifdef CONFIG_ARCH_OMAP1
  95         &omap1_int_ctrl,
  96 #else
  97         &omap2_int_ctrl,
  98 #endif
  99
 100 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
 101         &hwa742_ctrl,
 102 #endif
 103 #ifdef CONFIG_FB_OMAP_LCDC_BLIZZARD
 104         &blizzard_ctrl,
 105 #endif
 106 };
 107
 108 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
 109 #ifdef CONFIG_ARCH_OMAP1
 110 extern struct lcd_ctrl_extif omap1_ext_if;
 111 #else
 112 extern struct lcd_ctrl_extif omap2_ext_if;
 113 #endif
 114 #endif
 115
 116 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
 117 {
 118         mutex_lock(&fbdev->rqueue_mutex);
 119 }
 120
 121 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
 122 {
 123         mutex_unlock(&fbdev->rqueue_mutex);
 124 }
 125
 126 /*
 127  * ---------------------------------------------------------------------------
 128  * LCD controller and LCD DMA
 129  * ---------------------------------------------------------------------------
 130  */
 131 /* Lookup table to map elem size to elem type. */
 132 static const int dma_elem_type[] = {
 133         0,
 134         OMAP_DMA_DATA_TYPE_S8,
 135         OMAP_DMA_DATA_TYPE_S16,
 136         0,
 137         OMAP_DMA_DATA_TYPE_S32,
 138 };
 139
 140 /*
 141  * Allocate resources needed for LCD controller and LCD DMA operations. Video
 142  * memory is allocated from system memory according to the virtual display
 143  * size, except if a bigger memory size is specified explicitly as a kernel
 144  * parameter.
 145  */
 146 static int ctrl_init(struct omapfb_device *fbdev)
 147 {
 148         int r;
 149         int i;
 150
 151         /* kernel/module vram parameters override boot tags/board config */
 152         if (def_vram_cnt) {
 153                 for (i = 0; i < def_vram_cnt; i++)
 154                         fbdev->mem_desc.region[i].size =
 155                                 PAGE_ALIGN(def_vram[i]);
 156                 fbdev->mem_desc.region_cnt = i;
 157         } else {
 158                 struct omapfb_platform_data *conf;
 159
 160                 conf = fbdev->dev->platform_data;
 161                 fbdev->mem_desc = conf->mem_desc;
 162         }
 163
 164         if (!fbdev->mem_desc.region_cnt) {
 165                 struct lcd_panel *panel = fbdev->panel;
 166                 int def_size;
 167                 int bpp = panel->bpp;
 168
 169                 /* 12 bpp is packed in 16 bits */
 170                 if (bpp == 12)
 171                         bpp = 16;
 172                 def_size = def_vxres * def_vyres * bpp / 8;
 173                 fbdev->mem_desc.region_cnt = 1;
 174                 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
 175         }
 176         r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
 177         if (r < 0) {
 178                 dev_err(fbdev->dev, "controller initialization failed (%d)\n",
 179                         r);
 180                 return r;
 181         }
 182
 183 #ifdef DEBUG
 184         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
 185                 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
 186                          i,
 187                          fbdev->mem_desc.region[i].paddr,
 188                          fbdev->mem_desc.region[i].vaddr,
 189                          fbdev->mem_desc.region[i].size);
 190         }
 191 #endif
 192         return 0;
 193 }
 194
 195 static void ctrl_cleanup(struct omapfb_device *fbdev)
 196 {
 197         fbdev->ctrl->cleanup();
 198 }
 199
 200 /* Must be called with fbdev->rqueue_mutex held. */
 201 static int ctrl_change_mode(struct fb_info *fbi)
 202 {
 203         int r;
 204         unsigned long offset;
 205         struct omapfb_plane_struct *plane = fbi->par;
 206         struct omapfb_device *fbdev = plane->fbdev;
 207         struct fb_var_screeninfo *var = &fbi->var;
 208
 209         offset = var->yoffset * fbi->fix.line_length +
 210                  var->xoffset * var->bits_per_pixel / 8;
 211
 212         if (fbdev->ctrl->sync)
 213                 fbdev->ctrl->sync();
 214         r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
 215                                  offset, var->xres_virtual,
 216                                  plane->info.pos_x, plane->info.pos_y,
 217                                  var->xres, var->yres, plane->color_mode);
 218         if (r < 0)
 219                 return r;
 220
 221         if (fbdev->ctrl->set_rotate != NULL)
 222                 if((r = fbdev->ctrl->set_rotate(var->rotate)) < 0)
 223                         return r;
 224
 225         if (fbdev->ctrl->set_scale != NULL)
 226                 r = fbdev->ctrl->set_scale(plane->idx,
 227                                    var->xres, var->yres,
 228                                    plane->info.out_width,
 229                                    plane->info.out_height);
 230
 231         return r;
 232 }
 233
 234 /*
 235  * ---------------------------------------------------------------------------
 236  * fbdev framework callbacks and the ioctl interface
 237  * ---------------------------------------------------------------------------
 238  */
 239 /* Called each time the omapfb device is opened */
 240 static int omapfb_open(struct fb_info *info, int user)
 241 {
 242         return 0;
 243 }
 244
 245 static void omapfb_sync(struct fb_info *info);
 246
 247 /* Called when the omapfb device is closed. We make sure that any pending
 248  * gfx DMA operations are ended, before we return. */
 249 static int omapfb_release(struct fb_info *info, int user)
 250 {
 251         omapfb_sync(info);
 252         return 0;
 253 }
 254
 255 /* Store a single color palette entry into a pseudo palette or the hardware
 256  * palette if one is available. For now we support only 16bpp and thus store
 257  * the entry only to the pseudo palette.
 258  */
 259 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
 260                         u_int blue, u_int transp, int update_hw_pal)
 261 {
 262         struct omapfb_plane_struct *plane = info->par;
 263         struct omapfb_device *fbdev = plane->fbdev;
 264         struct fb_var_screeninfo *var = &info->var;
 265         int r = 0;
 266
 267         switch (plane->color_mode) {
 268         case OMAPFB_COLOR_YUV422:
 269         case OMAPFB_COLOR_YUV420:
 270         case OMAPFB_COLOR_YUY422:
 271                 r = -EINVAL;
 272                 break;
 273         case OMAPFB_COLOR_CLUT_8BPP:
 274         case OMAPFB_COLOR_CLUT_4BPP:
 275         case OMAPFB_COLOR_CLUT_2BPP:
 276         case OMAPFB_COLOR_CLUT_1BPP:
 277                 if (fbdev->ctrl->setcolreg)
 278                         r = fbdev->ctrl->setcolreg(regno, red, green, blue,
 279                                                         transp, update_hw_pal);
 280                 /* Fallthrough */
 281         case OMAPFB_COLOR_RGB565:
 282         case OMAPFB_COLOR_RGB444:
 283                 if (r != 0)
 284                         break;
 285
 286                 if (regno < 0) {
 287                         r = -EINVAL;
 288                         break;
 289                 }
 290
 291                 if (regno < 16) {
 292                         u16 pal;
 293                         pal = ((red >> (16 - var->red.length)) <<
 294                                         var->red.offset) |
 295                               ((green >> (16 - var->green.length)) <<
 296                                         var->green.offset) |
 297                               (blue >> (16 - var->blue.length));
 298                         ((u32 *)(info->pseudo_palette))[regno] = pal;
 299                 }
 300                 break;
 301         default:
 302                 BUG();
 303         }
 304         return r;
 305 }
 306
 307 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 308                             u_int transp, struct fb_info *info)
 309 {
 310         return _setcolreg(info, regno, red, green, blue, transp, 1);
 311 }
 312
 313 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
 314 {
 315         int count, index, r;
 316         u16 *red, *green, *blue, *transp;
 317         u16 trans = 0xffff;
 318
 319         red     = cmap->red;
 320         green   = cmap->green;
 321         blue    = cmap->blue;
 322         transp  = cmap->transp;
 323         index   = cmap->start;
 324
 325         for (count = 0; count < cmap->len; count++) {
 326                 if (transp)
 327                         trans = *transp++;
 328                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
 329                                 count == cmap->len - 1);
 330                 if (r != 0)
 331                         return r;
 332         }
 333
 334         return 0;
 335 }
 336
 337 static int omapfb_update_full_screen(struct fb_info *fbi);
 338
 339 static int omapfb_blank(int blank, struct fb_info *fbi)
 340 {
 341         struct omapfb_plane_struct *plane = fbi->par;
 342         struct omapfb_device *fbdev = plane->fbdev;
 343         int do_update = 0;
 344         int r = 0;
 345
 346         omapfb_rqueue_lock(fbdev);
 347         switch (blank) {
 348         case VESA_NO_BLANKING:
 349                 if (fbdev->state == OMAPFB_SUSPENDED) {
 350                         if (fbdev->ctrl->resume)
 351                                 fbdev->ctrl->resume();
 352                         fbdev->panel->enable(fbdev->panel);
 353                         fbdev->state = OMAPFB_ACTIVE;
 354                         if (fbdev->ctrl->get_update_mode() ==
 355                                         OMAPFB_MANUAL_UPDATE)
 356                                 do_update = 1;
 357                 }
 358                 break;
 359         case VESA_POWERDOWN:
 360                 if (fbdev->state == OMAPFB_ACTIVE) {
 361                         fbdev->panel->disable(fbdev->panel);
 362                         if (fbdev->ctrl->suspend)
 363                                 fbdev->ctrl->suspend();
 364                         fbdev->state = OMAPFB_SUSPENDED;
 365                 }
 366                 break;
 367         default:
 368                 r = -EINVAL;
 369         }
 370         omapfb_rqueue_unlock(fbdev);
 371
 372         if (r == 0 && do_update)
 373                 r = omapfb_update_full_screen(fbi);
 374
 375         return r;
 376 }
 377
 378 static void omapfb_sync(struct fb_info *fbi)
 379 {
 380         struct omapfb_plane_struct *plane = fbi->par;
 381         struct omapfb_device *fbdev = plane->fbdev;
 382
 383         omapfb_rqueue_lock(fbdev);
 384         if (fbdev->ctrl->sync)
 385                 fbdev->ctrl->sync();
 386         omapfb_rqueue_unlock(fbdev);
 387 }
 388
 389 /*
 390  * Set fb_info.fix fields and also updates fbdev.
 391  * When calling this fb_info.var must be set up already.
 392  */
 393 static void set_fb_fix(struct fb_info *fbi)
 394 {
 395         struct fb_fix_screeninfo *fix = &fbi->fix;
 396         struct fb_var_screeninfo *var = &fbi->var;
 397         struct omapfb_plane_struct *plane = fbi->par;
 398         struct omapfb_mem_region *rg;
 399         int bpp;
 400
 401         rg = &plane->fbdev->mem_desc.region[plane->idx];
 402         fbi->screen_base        = (char __iomem *)rg->vaddr;
 403         fix->smem_start         = rg->paddr;
 404         fix->smem_len           = rg->size;
 405
 406         fix->type = FB_TYPE_PACKED_PIXELS;
 407         bpp = var->bits_per_pixel;
 408         if (var->nonstd)
 409                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 410         else switch (var->bits_per_pixel) {
 411         case 16:
 412         case 12:
 413                 fix->visual = FB_VISUAL_TRUECOLOR;
 414                 /* 12bpp is stored in 16 bits */
 415                 bpp = 16;
 416                 break;
 417         case 1:
 418         case 2:
 419         case 4:
 420         case 8:
 421                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 422                 break;
 423         }
 424         fix->accel              = FB_ACCEL_OMAP1610;
 425         fix->line_length        = var->xres_virtual * bpp / 8;
 426 }
 427
 428 static int set_color_mode(struct omapfb_plane_struct *plane,
 429                           struct fb_var_screeninfo *var)
 430 {
 431         switch (var->nonstd) {
 432         case 0:
 433                 break;
 434         case OMAPFB_COLOR_YUV422:
 435                 var->bits_per_pixel = 16;
 436                 plane->color_mode = var->nonstd;
 437                 return 0;
 438         case OMAPFB_COLOR_YUV420:
 439                 var->bits_per_pixel = 12;
 440                 plane->color_mode = var->nonstd;
 441                 return 0;
 442         case OMAPFB_COLOR_YUY422:
 443                 var->bits_per_pixel = 16;
 444                 plane->color_mode = var->nonstd;
 445                 return 0;
 446         default:
 447                 return -EINVAL;
 448         }
 449
 450         switch (var->bits_per_pixel) {
 451         case 1:
 452                 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
 453                 return 0;
 454         case 2:
 455                 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
 456                 return 0;
 457         case 4:
 458                 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
 459                 return 0;
 460         case 8:
 461                 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
 462                 return 0;
 463         case 12:
 464                 var->bits_per_pixel = 16;
 465                 plane->color_mode = OMAPFB_COLOR_RGB444;
 466                 return 0;
 467         case 16:
 468                 plane->color_mode = OMAPFB_COLOR_RGB565;
 469                 return 0;
 470         default:
 471                 return -EINVAL;
 472         }
 473 }
 474
 475 /*
 476  * Check the values in var against our capabilities and in case of out of
 477  * bound values try to adjust them.
 478  */
 479 static int set_fb_var(struct fb_info *fbi,
 480                       struct fb_var_screeninfo *var)
 481 {
 482         int             bpp;
 483         unsigned long   max_frame_size;
 484         unsigned long   line_size;
 485         int             xres_min, xres_max;
 486         int             yres_min, yres_max;
 487         struct omapfb_plane_struct *plane = fbi->par;
 488         struct omapfb_device *fbdev = plane->fbdev;
 489         struct lcd_panel *panel = fbdev->panel;
 490
 491         if (set_color_mode(plane, var) < 0)
 492                 return -EINVAL;
 493
 494         bpp = var->bits_per_pixel;
 495         if (plane->color_mode == OMAPFB_COLOR_RGB444)
 496                 bpp = 16;
 497
 498         switch (var->rotate) {
 499         case 0:
 500         case 180:
 501                 xres_min = OMAPFB_PLANE_XRES_MIN;
 502                 xres_max = panel->x_res;
 503                 yres_min = OMAPFB_PLANE_YRES_MIN;
 504                 yres_max = panel->y_res;
 505                 if (cpu_is_omap15xx()) {
 506                         var->xres = panel->x_res;
 507                         var->yres = panel->y_res;
 508                 }
 509                 break;
 510         case 90:
 511         case 270:
 512                 xres_min = OMAPFB_PLANE_YRES_MIN;
 513                 xres_max = panel->y_res;
 514                 yres_min = OMAPFB_PLANE_XRES_MIN;
 515                 yres_max = panel->x_res;
 516                 if (cpu_is_omap15xx()) {
 517                         var->xres = panel->y_res;
 518                         var->yres = panel->x_res;
 519                 }
 520                 break;
 521         default:
 522                 return -EINVAL;
 523         }
 524
 525         if (var->xres < xres_min)
 526                 var->xres = xres_min;
 527         if (var->yres < yres_min)
 528                 var->yres = yres_min;
 529         if (var->xres > xres_max)
 530                 var->xres = xres_max;
 531         if (var->yres > yres_max)
 532                 var->yres = yres_max;
 533
 534         if (var->xres_virtual < var->xres)
 535                 var->xres_virtual = var->xres;
 536         if (var->yres_virtual < var->yres)
 537                 var->yres_virtual = var->yres;
 538         max_frame_size = fbdev->mem_desc.region[plane->idx].size;
 539         line_size = var->xres_virtual * bpp / 8;
 540         if (line_size * var->yres_virtual > max_frame_size) {
 541                 /* Try to keep yres_virtual first */
 542                 line_size = max_frame_size / var->yres_virtual;
 543                 var->xres_virtual = line_size * 8 / bpp;
 544                 if (var->xres_virtual < var->xres) {
 545                         /* Still doesn't fit. Shrink yres_virtual too */
 546                         var->xres_virtual = var->xres;
 547                         line_size = var->xres * bpp / 8;
 548                         var->yres_virtual = max_frame_size / line_size;
 549                 }
 550                 /* Recheck this, as the virtual size changed. */
 551                 if (var->xres_virtual < var->xres)
 552                         var->xres = var->xres_virtual;
 553                 if (var->yres_virtual < var->yres)
 554                         var->yres = var->yres_virtual;
 555                 if (var->xres < xres_min || var->yres < yres_min)
 556                         return -EINVAL;
 557         }
 558         if (var->xres + var->xoffset > var->xres_virtual)
 559                 var->xoffset = var->xres_virtual - var->xres;
 560         if (var->yres + var->yoffset > var->yres_virtual)
 561                 var->yoffset = var->yres_virtual - var->yres;
 562
 563         if (plane->color_mode == OMAPFB_COLOR_RGB444) {
 564                 var->red.offset   = 8; var->red.length   = 4;
 565                                                 var->red.msb_right   = 0;
 566                 var->green.offset = 4; var->green.length = 4;
 567                                                 var->green.msb_right = 0;
 568                 var->blue.offset  = 0; var->blue.length  = 4;
 569                                                 var->blue.msb_right  = 0;
 570         } else {
 571                 var->red.offset  = 11; var->red.length   = 5;
 572                                                 var->red.msb_right   = 0;
 573                 var->green.offset = 5;  var->green.length = 6;
 574                                                 var->green.msb_right = 0;
 575                 var->blue.offset = 0;  var->blue.length  = 5;
 576                                                 var->blue.msb_right  = 0;
 577         }
 578
 579         var->height             = -1;
 580         var->width              = -1;
 581         var->grayscale          = 0;
 582
 583         /* pixclock in ps, the rest in pixclock */
 584         var->pixclock           = 10000000 / (panel->pixel_clock / 100);
 585         var->left_margin        = panel->hfp;
 586         var->right_margin       = panel->hbp;
 587         var->upper_margin       = panel->vfp;
 588         var->lower_margin       = panel->vbp;
 589         var->hsync_len          = panel->hsw;
 590         var->vsync_len          = panel->vsw;
 591
 592         /* TODO: get these from panel->config */
 593         var->vmode              = FB_VMODE_NONINTERLACED;
 594         var->sync               = 0;
 595
 596         return 0;
 597 }
 598
 599
 600 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
 601 static void omapfb_rotate(struct fb_info *fbi, int rotate)
 602 {
 603         struct omapfb_plane_struct *plane = fbi->par;
 604         struct omapfb_device *fbdev = plane->fbdev;
 605
 606         omapfb_rqueue_lock(fbdev);
 607         if (rotate != fbi->var.rotate) {
 608                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 609
 610                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 611                 new_var->rotate = rotate;
 612                 if (set_fb_var(fbi, new_var) == 0 &&
 613                     memcmp(new_var, &fbi->var, sizeof(*new_var))) {
 614                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 615                         ctrl_change_mode(fbi);
 616                 }
 617         }
 618         omapfb_rqueue_unlock(fbdev);
 619 }
 620
 621 /*
 622  * Set new x,y offsets in the virtual display for the visible area and switch
 623  * to the new mode.
 624  */
 625 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 626                                struct fb_info *fbi)
 627 {
 628         struct omapfb_plane_struct *plane = fbi->par;
 629         struct omapfb_device *fbdev = plane->fbdev;
 630         int r = 0;
 631
 632         omapfb_rqueue_lock(fbdev);
 633         if (var->xoffset != fbi->var.xoffset ||
 634             var->yoffset != fbi->var.yoffset) {
 635                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 636
 637                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 638                 new_var->xoffset = var->xoffset;
 639                 new_var->yoffset = var->yoffset;
 640                 if (set_fb_var(fbi, new_var))
 641                         r = -EINVAL;
 642                 else {
 643                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 644                         ctrl_change_mode(fbi);
 645                 }
 646         }
 647         omapfb_rqueue_unlock(fbdev);
 648
 649         return r;
 650 }
 651
 652 /* Set mirror to vertical axis and switch to the new mode. */
 653 static int omapfb_mirror(struct fb_info *fbi, int mirror)
 654 {
 655         struct omapfb_plane_struct *plane = fbi->par;
 656         struct omapfb_device *fbdev = plane->fbdev;
 657         int r = 0;
 658
 659         omapfb_rqueue_lock(fbdev);
 660         mirror = mirror ? 1 : 0;
 661         if (cpu_is_omap15xx())
 662                 r = -EINVAL;
 663         else if (mirror != plane->info.mirror) {
 664                 plane->info.mirror = mirror;
 665                 r = ctrl_change_mode(fbi);
 666         }
 667         omapfb_rqueue_unlock(fbdev);
 668
 669         return r;
 670 }
 671
 672 /*
 673  * Check values in var, try to adjust them in case of out of bound values if
 674  * possible, or return error.
 675  */
 676 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 677 {
 678         struct omapfb_plane_struct *plane = fbi->par;
 679         struct omapfb_device *fbdev = plane->fbdev;
 680         int r;
 681
 682         omapfb_rqueue_lock(fbdev);
 683         if (fbdev->ctrl->sync != NULL)
 684                 fbdev->ctrl->sync();
 685         r = set_fb_var(fbi, var);
 686         omapfb_rqueue_unlock(fbdev);
 687
 688         return r;
 689 }
 690
 691 /*
 692  * Switch to a new mode. The parameters for it has been check already by
 693  * omapfb_check_var.
 694  */
 695 static int omapfb_set_par(struct fb_info *fbi)
 696 {
 697         struct omapfb_plane_struct *plane = fbi->par;
 698         struct omapfb_device *fbdev = plane->fbdev;
 699         int r = 0;
 700
 701         omapfb_rqueue_lock(fbdev);
 702         set_fb_fix(fbi);
 703         r = ctrl_change_mode(fbi);
 704         omapfb_rqueue_unlock(fbdev);
 705
 706         return r;
 707 }
 708
 709 int omapfb_update_window_async(struct fb_info *fbi,
 710                                 struct omapfb_update_window *win,
 711                                 void (*callback)(void *),
 712                                 void *callback_data)
 713 {
 714         int xres, yres;
 715         struct omapfb_plane_struct *plane = fbi->par;
 716         struct omapfb_device *fbdev = plane->fbdev;
 717         struct fb_var_screeninfo *var = &fbi->var;
 718
 719         switch (var->rotate) {
 720         case 0:
 721         case 180:
 722                 xres = fbdev->panel->x_res;
 723                 yres = fbdev->panel->y_res;
 724                 break;
 725         case 90:
 726         case 270:
 727                 xres = fbdev->panel->y_res;
 728                 yres = fbdev->panel->x_res;
 729                 break;
 730         default:
 731                 return -EINVAL;
 732         }
 733
 734         if (win->x >= xres || win->y >= yres ||
 735             win->out_x > xres || win->out_y > yres)
 736                 return -EINVAL;
 737
 738         if (!fbdev->ctrl->update_window ||
 739             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 740                 return -ENODEV;
 741
 742         if (win->x + win->width > xres)
 743                 win->width = xres - win->x;
 744         if (win->y + win->height > yres)
 745                 win->height = yres - win->y;
 746         if (win->out_x + win->out_width > xres)
 747                 win->out_width = xres - win->out_x;
 748         if (win->out_y + win->out_height > yres)
 749                 win->out_height = yres - win->out_y;
 750         if (!win->width || !win->height || !win->out_width || !win->out_height)
 751                 return 0;
 752
 753         return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
 754 }
 755 EXPORT_SYMBOL(omapfb_update_window_async);
 756
 757 static int omapfb_update_win(struct fb_info *fbi,
 758                                 struct omapfb_update_window *win)
 759 {
 760         struct omapfb_plane_struct *plane = fbi->par;
 761         int ret;
 762
 763         omapfb_rqueue_lock(plane->fbdev);
 764         ret = omapfb_update_window_async(fbi, win, NULL, 0);
 765         omapfb_rqueue_unlock(plane->fbdev);
 766
 767         return ret;
 768 }
 769
 770 static int omapfb_update_full_screen(struct fb_info *fbi)
 771 {
 772         struct omapfb_plane_struct *plane = fbi->par;
 773         struct omapfb_device *fbdev = plane->fbdev;
 774         struct omapfb_update_window win;
 775         int r;
 776
 777         if (!fbdev->ctrl->update_window ||
 778             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 779                 return -ENODEV;
 780
 781         win.x = 0;
 782         win.y = 0;
 783         win.width = fbi->var.xres;
 784         win.height = fbi->var.yres;
 785         win.out_x = 0;
 786         win.out_y = 0;
 787         win.out_width = fbi->var.xres;
 788         win.out_height = fbi->var.yres;
 789         win.format = 0;
 790
 791         omapfb_rqueue_lock(fbdev);
 792         r = fbdev->ctrl->update_window(fbi, &win, NULL, 0);
 793         omapfb_rqueue_unlock(fbdev);
 794
 795         return r;
 796 }
 797
 798 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 799 {
 800         struct omapfb_plane_struct *plane = fbi->par;
 801         struct omapfb_device *fbdev = plane->fbdev;
 802         struct lcd_panel *panel = fbdev->panel;
 803         struct omapfb_plane_info old_info;
 804         int r = 0;
 805
 806         if (pi->pos_x + pi->out_width > panel->x_res ||
 807             pi->pos_y + pi->out_height > panel->y_res)
 808                 return -EINVAL;
 809
 810         omapfb_rqueue_lock(fbdev);
 811         if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
 812                 /*
 813                  * This plane's memory was freed, can't enable it
 814                  * until it's reallocated.
 815                  */
 816                 r = -EINVAL;
 817                 goto out;
 818         }
 819         old_info = plane->info;
 820         plane->info = *pi;
 821         if (pi->enabled) {
 822                 r = ctrl_change_mode(fbi);
 823                 if (r < 0) {
 824                         plane->info = old_info;
 825                         goto out;
 826                 }
 827         }
 828         r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
 829         if (r < 0) {
 830                 plane->info = old_info;
 831                 goto out;
 832         }
 833 out:
 834         omapfb_rqueue_unlock(fbdev);
 835         return r;
 836 }
 837
 838 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 839 {
 840         struct omapfb_plane_struct *plane = fbi->par;
 841
 842         *pi = plane->info;
 843         return 0;
 844 }
 845
 846 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 847 {
 848         struct omapfb_plane_struct *plane = fbi->par;
 849         struct omapfb_device *fbdev = plane->fbdev;
 850         struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
 851         size_t size;
 852         int r = 0;
 853
 854         if (fbdev->ctrl->setup_mem == NULL)
 855                 return -ENODEV;
 856         if (mi->type > OMAPFB_MEMTYPE_MAX)
 857                 return -EINVAL;
 858
 859         size = PAGE_ALIGN(mi->size);
 860         omapfb_rqueue_lock(fbdev);
 861         if (plane->info.enabled) {
 862                 r = -EBUSY;
 863                 goto out;
 864         }
 865         if (rg->size != size || rg->type != mi->type) {
 866                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 867                 unsigned long old_size = rg->size;
 868                 u8            old_type = rg->type;
 869                 unsigned long paddr;
 870
 871                 rg->size = size;
 872                 rg->type = mi->type;
 873                 /*
 874                  * size == 0 is a special case, for which we
 875                  * don't check / adjust the screen parameters.
 876                  * This isn't a problem since the plane can't
 877                  * be reenabled unless its size is > 0.
 878                  */
 879                 if (old_size != size && size) {
 880                         if (size) {
 881                                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 882                                 r = set_fb_var(fbi, new_var);
 883                                 if (r < 0)
 884                                         goto out;
 885                         }
 886                 }
 887
 888                 if (fbdev->ctrl->sync)
 889                         fbdev->ctrl->sync();
 890                 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
 891                 if (r < 0) {
 892                         /* Revert changes. */
 893                         rg->size = old_size;
 894                         rg->type = old_type;
 895                         goto out;
 896                 }
 897                 rg->paddr = paddr;
 898
 899                 if (old_size != size) {
 900                         if (size) {
 901                                 memcpy(&fbi->var, new_var, sizeof(fbi->var));
 902                                 set_fb_fix(fbi);
 903                         } else {
 904                                 /*
 905                                  * Set these explicitly to indicate that the
 906                                  * plane memory is dealloce'd, the other
 907                                  * screen parameters in var / fix are invalid.
 908                                  */
 909                                 fbi->fix.smem_start = 0;
 910                                 fbi->fix.smem_len = 0;
 911                         }
 912                 }
 913         }
 914 out:
 915         omapfb_rqueue_unlock(fbdev);
 916
 917         return r;
 918 }
 919
 920 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 921 {
 922         struct omapfb_plane_struct *plane = fbi->par;
 923         struct omapfb_device *fbdev = plane->fbdev;
 924         struct omapfb_mem_region *rg;
 925
 926         rg = &fbdev->mem_desc.region[plane->idx];
 927         memset(mi, 0, sizeof(*mi));
 928         mi->size = rg->size;
 929         mi->type = rg->type;
 930
 931         return 0;
 932 }
 933
 934 static int omapfb_set_color_key(struct omapfb_device *fbdev,
 935                                 struct omapfb_color_key *ck)
 936 {
 937         int r;
 938
 939         if (!fbdev->ctrl->set_color_key)
 940                 return -ENODEV;
 941
 942         omapfb_rqueue_lock(fbdev);
 943         r = fbdev->ctrl->set_color_key(ck);
 944         omapfb_rqueue_unlock(fbdev);
 945
 946         return r;
 947 }
 948
 949 static int omapfb_get_color_key(struct omapfb_device *fbdev,
 950                                 struct omapfb_color_key *ck)
 951 {
 952         int r;
 953
 954         if (!fbdev->ctrl->get_color_key)
 955                 return -ENODEV;
 956
 957         omapfb_rqueue_lock(fbdev);
 958         r = fbdev->ctrl->get_color_key(ck);
 959         omapfb_rqueue_unlock(fbdev);
 960
 961         return r;
 962 }
 963
 964 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
 965 static int notifier_inited;
 966
 967 static void omapfb_init_notifier(void)
 968 {
 969         int i;
 970
 971         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
 972                 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
 973 }
 974
 975 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
 976                                 omapfb_notifier_callback_t callback,
 977                                 void *callback_data)
 978 {
 979         int r;
 980
 981         if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
 982                 return -EINVAL;
 983
 984         if (!notifier_inited) {
 985                 omapfb_init_notifier();
 986                 notifier_inited = 1;
 987         }
 988
 989         omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
 990                                         unsigned long, void *))callback;
 991         omapfb_nb->data = callback_data;
 992         r = blocking_notifier_chain_register(
 993                                 &omapfb_client_list[omapfb_nb->plane_idx],
 994                                 &omapfb_nb->nb);
 995         if (r)
 996                 return r;
 997         if (omapfb_dev != NULL &&
 998             omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
 999                 omapfb_dev->ctrl->bind_client(omapfb_nb);
1000         }
1001
1002         return 0;
1003 }
1004 EXPORT_SYMBOL(omapfb_register_client);
1005
1006 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
1007 {
1008         return blocking_notifier_chain_unregister(
1009                 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
1010 }
1011 EXPORT_SYMBOL(omapfb_unregister_client);
1012
1013 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
1014 {
1015         int i;
1016
1017         if (!notifier_inited)
1018                 /* no client registered yet */
1019                 return;
1020
1021         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1022                 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1023                                     fbdev->fb_info[i]);
1024 }
1025 EXPORT_SYMBOL(omapfb_notify_clients);
1026
1027 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1028                                    enum omapfb_update_mode mode)
1029 {
1030         int r;
1031
1032         omapfb_rqueue_lock(fbdev);
1033         r = fbdev->ctrl->set_update_mode(mode);
1034         omapfb_rqueue_unlock(fbdev);
1035
1036         return r;
1037 }
1038
1039 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1040 {
1041         int r;
1042
1043         omapfb_rqueue_lock(fbdev);
1044         r = fbdev->ctrl->get_update_mode();
1045         omapfb_rqueue_unlock(fbdev);
1046
1047         return r;
1048 }
1049
1050 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1051                                      struct omapfb_caps *caps)
1052 {
1053         memset(caps, 0, sizeof(*caps));
1054         fbdev->ctrl->get_caps(plane, caps);
1055         caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1056 }
1057
1058 /* For lcd testing */
1059 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1060 {
1061         omapfb_rqueue_lock(fbdev);
1062         *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1063         if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1064                 struct omapfb_update_window win;
1065
1066                 memset(&win, 0, sizeof(win));
1067                 win.width = 2;
1068                 win.height = 2;
1069                 win.out_width = 2;
1070                 win.out_height = 2;
1071                 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, 0);
1072         }
1073         omapfb_rqueue_unlock(fbdev);
1074 }
1075 EXPORT_SYMBOL(omapfb_write_first_pixel);
1076
1077 /*
1078  * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1079  * here to be accessible by user mode code.
1080  */
1081 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1082                         unsigned long arg)
1083 {
1084         struct omapfb_plane_struct *plane = fbi->par;
1085         struct omapfb_device    *fbdev = plane->fbdev;
1086         struct fb_ops           *ops = fbi->fbops;
1087         union {
1088                 struct omapfb_update_window     update_window;
1089                 struct omapfb_plane_info        plane_info;
1090                 struct omapfb_mem_info          mem_info;
1091                 struct omapfb_color_key         color_key;
1092                 enum omapfb_update_mode         update_mode;
1093                 struct omapfb_caps              caps;
1094                 unsigned int            mirror;
1095                 int                     plane_out;
1096                 int                     enable_plane;
1097         } p;
1098         int r = 0;
1099
1100         BUG_ON(!ops);
1101         switch (cmd) {
1102         case OMAPFB_MIRROR:
1103                 if (get_user(p.mirror, (int __user *)arg))
1104                         r = -EFAULT;
1105                 else
1106                         omapfb_mirror(fbi, p.mirror);
1107                 break;
1108         case OMAPFB_SYNC_GFX:
1109                 omapfb_sync(fbi);
1110                 break;
1111         case OMAPFB_VSYNC:
1112                 break;
1113         case OMAPFB_SET_UPDATE_MODE:
1114                 if (get_user(p.update_mode, (int __user *)arg))
1115                         r = -EFAULT;
1116                 else
1117                         r = omapfb_set_update_mode(fbdev, p.update_mode);
1118                 break;
1119         case OMAPFB_GET_UPDATE_MODE:
1120                 p.update_mode = omapfb_get_update_mode(fbdev);
1121                 if (put_user(p.update_mode,
1122                                         (enum omapfb_update_mode __user *)arg))
1123                         r = -EFAULT;
1124                 break;
1125         case OMAPFB_UPDATE_WINDOW_OLD:
1126                 if (copy_from_user(&p.update_window, (void __user *)arg,
1127                                    sizeof(struct omapfb_update_window_old)))
1128                         r = -EFAULT;
1129                 else {
1130                         struct omapfb_update_window *u = &p.update_window;
1131                         u->out_x = u->x;
1132                         u->out_y = u->y;
1133                         u->out_width = u->width;
1134                         u->out_height = u->height;
1135                         memset(u->reserved, 0, sizeof(u->reserved));
1136                         r = omapfb_update_win(fbi, u);
1137                 }
1138                 break;
1139         case OMAPFB_UPDATE_WINDOW:
1140                 if (copy_from_user(&p.update_window, (void __user *)arg,
1141                                    sizeof(p.update_window)))
1142                         r = -EFAULT;
1143                 else
1144                         r = omapfb_update_win(fbi, &p.update_window);
1145                 break;
1146         case OMAPFB_SETUP_PLANE:
1147                 if (copy_from_user(&p.plane_info, (void __user *)arg,
1148                                    sizeof(p.plane_info)))
1149                         r = -EFAULT;
1150                 else
1151                         r = omapfb_setup_plane(fbi, &p.plane_info);
1152                 break;
1153         case OMAPFB_QUERY_PLANE:
1154                 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1155                         break;
1156                 if (copy_to_user((void __user *)arg, &p.plane_info,
1157                                    sizeof(p.plane_info)))
1158                         r = -EFAULT;
1159                 break;
1160         case OMAPFB_SETUP_MEM:
1161                 if (copy_from_user(&p.mem_info, (void __user *)arg,
1162                                    sizeof(p.mem_info)))
1163                         r = -EFAULT;
1164                 else
1165                         r = omapfb_setup_mem(fbi, &p.mem_info);
1166                 break;
1167         case OMAPFB_QUERY_MEM:
1168                 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1169                         break;
1170                 if (copy_to_user((void __user *)arg, &p.mem_info,
1171                                    sizeof(p.mem_info)))
1172                         r = -EFAULT;
1173                 break;
1174         case OMAPFB_SET_COLOR_KEY:
1175                 if (copy_from_user(&p.color_key, (void __user *)arg,
1176                                    sizeof(p.color_key)))
1177                         r = -EFAULT;
1178                 else
1179                         r = omapfb_set_color_key(fbdev, &p.color_key);
1180                 break;
1181         case OMAPFB_GET_COLOR_KEY:
1182                 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1183                         break;
1184                 if (copy_to_user((void __user *)arg, &p.color_key,
1185                                  sizeof(p.color_key)))
1186                         r = -EFAULT;
1187                 break;
1188         case OMAPFB_GET_CAPS:
1189                 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1190                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1191                         r = -EFAULT;
1192                 break;
1193         case OMAPFB_LCD_TEST:
1194                 {
1195                         int test_num;
1196
1197                         if (get_user(test_num, (int __user *)arg)) {
1198                                 r = -EFAULT;
1199                                 break;
1200                         }
1201                         if (!fbdev->panel->run_test) {
1202                                 r = -EINVAL;
1203                                 break;
1204                         }
1205                         r = fbdev->panel->run_test(fbdev->panel, test_num);
1206                         break;
1207                 }
1208         case OMAPFB_CTRL_TEST:
1209                 {
1210                         int test_num;
1211
1212                         if (get_user(test_num, (int __user *)arg)) {
1213                                 r = -EFAULT;
1214                                 break;
1215                         }
1216                         if (!fbdev->ctrl->run_test) {
1217                                 r = -EINVAL;
1218                                 break;
1219                         }
1220                         r = fbdev->ctrl->run_test(test_num);
1221                         break;
1222                 }
1223         default:
1224                 r = -EINVAL;
1225         }
1226
1227         return r;
1228 }
1229
1230 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1231 {
1232         struct omapfb_plane_struct *plane = info->par;
1233         struct omapfb_device *fbdev = plane->fbdev;
1234         int r;
1235
1236         omapfb_rqueue_lock(fbdev);
1237         r = fbdev->ctrl->mmap(info, vma);
1238         omapfb_rqueue_unlock(fbdev);
1239
1240         return r;
1241 }
1242
1243 /*
1244  * Callback table for the frame buffer framework. Some of these pointers
1245  * will be changed according to the current setting of fb_info->accel_flags.
1246  */
1247 static struct fb_ops omapfb_ops = {
1248         .owner          = THIS_MODULE,
1249         .fb_open        = omapfb_open,
1250         .fb_release     = omapfb_release,
1251         .fb_setcolreg   = omapfb_setcolreg,
1252         .fb_setcmap     = omapfb_setcmap,
1253         .fb_fillrect    = cfb_fillrect,
1254         .fb_copyarea    = cfb_copyarea,
1255         .fb_imageblit   = cfb_imageblit,
1256         .fb_blank       = omapfb_blank,
1257         .fb_ioctl       = omapfb_ioctl,
1258         .fb_check_var   = omapfb_check_var,
1259         .fb_set_par     = omapfb_set_par,
1260         .fb_rotate      = omapfb_rotate,
1261         .fb_pan_display = omapfb_pan_display,
1262 };
1263
1264 /*
1265  * ---------------------------------------------------------------------------
1266  * Sysfs interface
1267  * ---------------------------------------------------------------------------
1268  */
1269 /* omapfbX sysfs entries */
1270 static ssize_t omapfb_show_caps_num(struct device *dev,
1271                                     struct device_attribute *attr, char *buf)
1272 {
1273         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1274         int plane;
1275         size_t size;
1276         struct omapfb_caps caps;
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 %#010x %#010x %#010x\n",
1284                         plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1285                 plane++;
1286         }
1287         return size;
1288 }
1289
1290 static ssize_t omapfb_show_caps_text(struct device *dev,
1291                                      struct device_attribute *attr, char *buf)
1292 {
1293         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1294         int i;
1295         struct omapfb_caps caps;
1296         int plane;
1297         size_t size;
1298
1299         plane = 0;
1300         size = 0;
1301         while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1302                 omapfb_get_caps(fbdev, plane, &caps);
1303                 size += snprintf(&buf[size], PAGE_SIZE - size,
1304                                  "plane#%d:\n", plane);
1305                 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1306                      size < PAGE_SIZE; i++) {
1307                         if (ctrl_caps[i].flag & caps.ctrl)
1308                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1309                                         " %s\n", ctrl_caps[i].name);
1310                 }
1311                 size += snprintf(&buf[size], PAGE_SIZE - size,
1312                                  " plane colors:\n");
1313                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1314                      size < PAGE_SIZE; i++) {
1315                         if (color_caps[i].flag & caps.plane_color)
1316                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1317                                         "  %s\n", color_caps[i].name);
1318                 }
1319                 size += snprintf(&buf[size], PAGE_SIZE - size,
1320                                  " window colors:\n");
1321                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1322                      size < PAGE_SIZE; i++) {
1323                         if (color_caps[i].flag & caps.wnd_color)
1324                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1325                                         "  %s\n", color_caps[i].name);
1326                 }
1327
1328                 plane++;
1329         }
1330         return size;
1331 }
1332
1333 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1334 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1335
1336 /* panel sysfs entries */
1337 static ssize_t omapfb_show_panel_name(struct device *dev,
1338                                       struct device_attribute *attr, char *buf)
1339 {
1340         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1341
1342         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1343 }
1344
1345 static ssize_t omapfb_show_bklight_level(struct device *dev,
1346                                          struct device_attribute *attr,
1347                                          char *buf)
1348 {
1349         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1350         int r;
1351
1352         if (fbdev->panel->get_bklight_level) {
1353                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1354                              fbdev->panel->get_bklight_level(fbdev->panel));
1355         } else
1356                 r = -ENODEV;
1357         return r;
1358 }
1359
1360 static ssize_t omapfb_store_bklight_level(struct device *dev,
1361                                           struct device_attribute *attr,
1362                                           const char *buf, size_t size)
1363 {
1364         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1365         int r;
1366
1367         if (fbdev->panel->set_bklight_level) {
1368                 unsigned int level;
1369
1370                 if (sscanf(buf, "%10d", &level) == 1) {
1371                         r = fbdev->panel->set_bklight_level(fbdev->panel,
1372                                                             level);
1373                 } else
1374                         r = -EINVAL;
1375         } else
1376                 r = -ENODEV;
1377         return r ? r : size;
1378 }
1379
1380 static ssize_t omapfb_show_bklight_max(struct device *dev,
1381                                        struct device_attribute *attr, char *buf)
1382 {
1383         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1384         int r;
1385
1386         if (fbdev->panel->get_bklight_level) {
1387                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1388                              fbdev->panel->get_bklight_max(fbdev->panel));
1389         } else
1390                 r = -ENODEV;
1391         return r;
1392 }
1393
1394 static struct device_attribute dev_attr_panel_name =
1395         __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1396 static DEVICE_ATTR(backlight_level, 0664,
1397                    omapfb_show_bklight_level, omapfb_store_bklight_level);
1398 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1399
1400 static struct attribute *panel_attrs[] = {
1401         &dev_attr_panel_name.attr,
1402         &dev_attr_backlight_level.attr,
1403         &dev_attr_backlight_max.attr,
1404         NULL,
1405 };
1406
1407 static struct attribute_group panel_attr_grp = {
1408         .name  = "panel",
1409         .attrs = panel_attrs,
1410 };
1411
1412 /* ctrl sysfs entries */
1413 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1414                                      struct device_attribute *attr, char *buf)
1415 {
1416         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1417
1418         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1419 }
1420
1421 static struct device_attribute dev_attr_ctrl_name =
1422         __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1423
1424 static struct attribute *ctrl_attrs[] = {
1425         &dev_attr_ctrl_name.attr,
1426         NULL,
1427 };
1428
1429 static struct attribute_group ctrl_attr_grp = {
1430         .name  = "ctrl",
1431         .attrs = ctrl_attrs,
1432 };
1433
1434 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1435 {
1436         int r;
1437
1438         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1439                 goto fail0;
1440
1441         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1442                 goto fail1;
1443
1444         if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1445                 goto fail2;
1446
1447         if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1448                 goto fail3;
1449
1450         return 0;
1451 fail3:
1452         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1453 fail2:
1454         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1455 fail1:
1456         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1457 fail0:
1458         dev_err(fbdev->dev, "unable to register sysfs interface\n");
1459         return r;
1460 }
1461
1462 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1463 {
1464         sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1465         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1466         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1467         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1468 }
1469
1470 /*
1471  * ---------------------------------------------------------------------------
1472  * LDM callbacks
1473  * ---------------------------------------------------------------------------
1474  */
1475 /* Initialize system fb_info object and set the default video mode.
1476  * The frame buffer memory already allocated by lcddma_init
1477  */
1478 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1479 {
1480         struct fb_var_screeninfo        *var = &info->var;
1481         struct fb_fix_screeninfo        *fix = &info->fix;
1482         int                             r = 0;
1483
1484         info->fbops = &omapfb_ops;
1485         info->flags = FBINFO_FLAG_DEFAULT;
1486
1487         strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1488
1489         info->pseudo_palette = fbdev->pseudo_palette;
1490
1491         var->accel_flags  = def_accel ? FB_ACCELF_TEXT : 0;
1492         var->xres = def_vxres;
1493         var->yres = def_vyres;
1494         var->xres_virtual = def_vxres;
1495         var->yres_virtual = def_vyres;
1496         var->rotate       = def_rotate;
1497         var->bits_per_pixel = fbdev->panel->bpp;
1498
1499         set_fb_var(info, var);
1500         set_fb_fix(info);
1501
1502         r = fb_alloc_cmap(&info->cmap, 16, 0);
1503         if (r != 0)
1504                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1505
1506         return r;
1507 }
1508
1509 /* Release the fb_info object */
1510 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1511 {
1512         fb_dealloc_cmap(&fbi->cmap);
1513 }
1514
1515 static void planes_cleanup(struct omapfb_device *fbdev)
1516 {
1517         int i;
1518
1519         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1520                 if (fbdev->fb_info[i] == NULL)
1521                         break;
1522                 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1523                 framebuffer_release(fbdev->fb_info[i]);
1524         }
1525 }
1526
1527 static int planes_init(struct omapfb_device *fbdev)
1528 {
1529         struct fb_info *fbi;
1530         int i;
1531         int r;
1532
1533         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1534                 struct omapfb_plane_struct *plane;
1535                 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1536                                         fbdev->dev);
1537                 if (fbi == NULL) {
1538                         dev_err(fbdev->dev,
1539                                 "unable to allocate memory for plane info\n");
1540                         planes_cleanup(fbdev);
1541                         return -ENOMEM;
1542                 }
1543                 plane = fbi->par;
1544                 plane->idx = i;
1545                 plane->fbdev = fbdev;
1546                 plane->info.mirror = def_mirror;
1547                 fbdev->fb_info[i] = fbi;
1548
1549                 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1550                         framebuffer_release(fbi);
1551                         planes_cleanup(fbdev);
1552                         return r;
1553                 }
1554                 plane->info.out_width = fbi->var.xres;
1555                 plane->info.out_height = fbi->var.yres;
1556         }
1557         return 0;
1558 }
1559
1560 /*
1561  * Free driver resources. Can be called to rollback an aborted initialization
1562  * sequence.
1563  */
1564 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1565 {
1566         int i;
1567
1568         switch (state) {
1569         case OMAPFB_ACTIVE:
1570                 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1571                         unregister_framebuffer(fbdev->fb_info[i]);
1572         case 7:
1573                 omapfb_unregister_sysfs(fbdev);
1574         case 6:
1575                 fbdev->panel->disable(fbdev->panel);
1576         case 5:
1577                 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1578         case 4:
1579                 planes_cleanup(fbdev);
1580         case 3:
1581                 ctrl_cleanup(fbdev);
1582         case 2:
1583                 fbdev->panel->cleanup(fbdev->panel);
1584         case 1:
1585                 dev_set_drvdata(fbdev->dev, NULL);
1586                 kfree(fbdev);
1587         case 0:
1588                 /* nothing to free */
1589                 break;
1590         default:
1591                 BUG();
1592         }
1593 }
1594
1595 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1596 {
1597         struct omapfb_platform_data *conf;
1598         char name[17];
1599         int i;
1600
1601         conf = fbdev->dev->platform_data;
1602
1603         fbdev->ctrl = NULL;
1604
1605         strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1606         name[sizeof(name) - 1] = '\0';
1607
1608         if (strcmp(name, "internal") == 0) {
1609                 fbdev->ctrl = fbdev->int_ctrl;
1610                 return 0;
1611         }
1612
1613         for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1614                 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1615                 if (strcmp(ctrls[i]->name, name) == 0) {
1616                         fbdev->ctrl = ctrls[i];
1617                         break;
1618                 }
1619         }
1620
1621         if (fbdev->ctrl == NULL) {
1622                 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1623                 return -1;
1624         }
1625
1626         return 0;
1627 }
1628
1629 static void check_required_callbacks(struct omapfb_device *fbdev)
1630 {
1631 #define _C(x) (fbdev->ctrl->x != NULL)
1632 #define _P(x) (fbdev->panel->x != NULL)
1633         BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1634         BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1635                  _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1636                  _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1637                  _P(get_caps)));
1638 #undef _P
1639 #undef _C
1640 }
1641
1642 /*
1643  * Called by LDM binding to probe and attach a new device.
1644  * Initialization sequence:
1645  *   1. allocate system omapfb_device structure
1646  *   2. select controller type according to platform configuration
1647  *      init LCD panel
1648  *   3. init LCD controller and LCD DMA
1649  *   4. init system fb_info structure for all planes
1650  *   5. setup video mode for first plane and enable it
1651  *   6. enable LCD panel
1652  *   7. register sysfs attributes
1653  *   OMAPFB_ACTIVE: register system fb_info structure for all planes
1654  */
1655 static int omapfb_do_probe(struct platform_device *pdev,
1656                                 struct lcd_panel *panel)
1657 {
1658         struct omapfb_device    *fbdev = NULL;
1659         int                     init_state;
1660         unsigned long           phz, hhz, vhz;
1661         unsigned long           vram;
1662         int                     i;
1663         int                     r = 0;
1664
1665         init_state = 0;
1666
1667         if (pdev->num_resources != 0) {
1668                 dev_err(&pdev->dev, "probed for an unknown device\n");
1669                 r = -ENODEV;
1670                 goto cleanup;
1671         }
1672
1673         if (pdev->dev.platform_data == NULL) {
1674                 dev_err(&pdev->dev, "missing platform data\n");
1675                 r = -ENOENT;
1676                 goto cleanup;
1677         }
1678
1679         fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1680         if (fbdev == NULL) {
1681                 dev_err(&pdev->dev,
1682                         "unable to allocate memory for device info\n");
1683                 r = -ENOMEM;
1684                 goto cleanup;
1685         }
1686         init_state++;
1687
1688         fbdev->dev = &pdev->dev;
1689         fbdev->panel = panel;
1690         platform_set_drvdata(pdev, fbdev);
1691
1692         mutex_init(&fbdev->rqueue_mutex);
1693
1694 #ifdef CONFIG_ARCH_OMAP1
1695         fbdev->int_ctrl = &omap1_int_ctrl;
1696 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1697         fbdev->ext_if = &omap1_ext_if;
1698 #endif
1699 #else   /* OMAP2 */
1700         fbdev->int_ctrl = &omap2_int_ctrl;
1701 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1702         fbdev->ext_if = &omap2_ext_if;
1703 #endif
1704 #endif
1705         if (omapfb_find_ctrl(fbdev) < 0) {
1706                 dev_err(fbdev->dev,
1707                         "LCD controller not found, board not supported\n");
1708                 r = -ENODEV;
1709                 goto cleanup;
1710         }
1711
1712         r = fbdev->panel->init(fbdev->panel, fbdev);
1713         if (r)
1714                 goto cleanup;
1715
1716         pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1717
1718         def_vxres = def_vxres ? : fbdev->panel->x_res;
1719         def_vyres = def_vyres ? : fbdev->panel->y_res;
1720
1721         init_state++;
1722
1723         r = ctrl_init(fbdev);
1724         if (r)
1725                 goto cleanup;
1726         if (fbdev->ctrl->mmap != NULL)
1727                 omapfb_ops.fb_mmap = omapfb_mmap;
1728         init_state++;
1729
1730         check_required_callbacks(fbdev);
1731
1732         r = planes_init(fbdev);
1733         if (r)
1734                 goto cleanup;
1735         init_state++;
1736
1737 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1738         /* Set DMA priority for EMIFF access to highest */
1739         if (cpu_class_is_omap1())
1740                 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1741 #endif
1742
1743         r = ctrl_change_mode(fbdev->fb_info[0]);
1744         if (r) {
1745                 dev_err(fbdev->dev, "mode setting failed\n");
1746                 goto cleanup;
1747         }
1748
1749         /* GFX plane is enabled by default */
1750         r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1751         if (r)
1752                 goto cleanup;
1753
1754         omapfb_set_update_mode(fbdev, manual_update ?
1755                                    OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1756         init_state++;
1757
1758         r = fbdev->panel->enable(fbdev->panel);
1759         if (r)
1760                 goto cleanup;
1761         init_state++;
1762
1763         r = omapfb_register_sysfs(fbdev);
1764         if (r)
1765                 goto cleanup;
1766         init_state++;
1767
1768         vram = 0;
1769         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1770                 r = register_framebuffer(fbdev->fb_info[i]);
1771                 if (r != 0) {
1772                         dev_err(fbdev->dev,
1773                                 "registering framebuffer %d failed\n", i);
1774                         goto cleanup;
1775                 }
1776                 vram += fbdev->mem_desc.region[i].size;
1777         }
1778
1779         fbdev->state = OMAPFB_ACTIVE;
1780
1781         panel = fbdev->panel;
1782         phz = panel->pixel_clock * 1000;
1783         hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1784         vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1785
1786         omapfb_dev = fbdev;
1787
1788         pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1789                         vram, fbdev->mem_desc.region_cnt);
1790         pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1791                         "vfreq %lu.%lu Hz\n",
1792                         phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1793
1794         return 0;
1795
1796 cleanup:
1797         omapfb_free_resources(fbdev, init_state);
1798
1799         return r;
1800 }
1801
1802 static int omapfb_probe(struct platform_device *pdev)
1803 {
1804         BUG_ON(fbdev_pdev != NULL);
1805
1806         /* Delay actual initialization until the LCD is registered */
1807         fbdev_pdev = pdev;
1808         if (fbdev_panel != NULL)
1809                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1810         return 0;
1811 }
1812
1813 void omapfb_register_panel(struct lcd_panel *panel)
1814 {
1815         BUG_ON(fbdev_panel != NULL);
1816
1817         fbdev_panel = panel;
1818         if (fbdev_pdev != NULL)
1819                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1820 }
1821
1822 /* Called when the device is being detached from the driver */
1823 static int omapfb_remove(struct platform_device *pdev)
1824 {
1825         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1826         enum omapfb_state saved_state = fbdev->state;
1827
1828         /* FIXME: wait till completion of pending events */
1829
1830         fbdev->state = OMAPFB_DISABLED;
1831         omapfb_free_resources(fbdev, saved_state);
1832
1833         return 0;
1834 }
1835
1836 /* PM suspend */
1837 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1838 {
1839         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1840
1841         if (fbdev != NULL)
1842                 omapfb_blank(VESA_POWERDOWN, fbdev->fb_info[0]);
1843         return 0;
1844 }
1845
1846 /* PM resume */
1847 static int omapfb_resume(struct platform_device *pdev)
1848 {
1849         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1850
1851         if (fbdev != NULL)
1852                 omapfb_blank(VESA_NO_BLANKING, fbdev->fb_info[0]);
1853         return 0;
1854 }
1855
1856 static struct platform_driver omapfb_driver = {
1857         .probe          = omapfb_probe,
1858         .remove         = omapfb_remove,
1859         .suspend        = omapfb_suspend,
1860         .resume         = omapfb_resume,
1861         .driver         = {
1862                 .name   = MODULE_NAME,
1863                 .owner  = THIS_MODULE,
1864         },
1865 };
1866
1867 #ifndef MODULE
1868
1869 /* Process kernel command line parameters */
1870 static int __init omapfb_setup(char *options)
1871 {
1872         char *this_opt = NULL;
1873         int r = 0;
1874
1875         pr_debug("omapfb: options %s\n", options);
1876
1877         if (!options || !*options)
1878                 return 0;
1879
1880         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1881                 if (!strncmp(this_opt, "accel", 5))
1882                         def_accel = 1;
1883                 else if (!strncmp(this_opt, "vram:", 5)) {
1884                         char *suffix;
1885                         unsigned long vram;
1886                         vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1887                         switch (suffix[0]) {
1888                         case '\0':
1889                                 break;
1890                         case 'm':
1891                         case 'M':
1892                                 vram *= 1024;
1893                                 /* Fall through */
1894                         case 'k':
1895                         case 'K':
1896                                 vram *= 1024;
1897                                 break;
1898                         default:
1899                                 pr_debug("omapfb: invalid vram suffix %c\n",
1900                                          suffix[0]);
1901                                 r = -1;
1902                         }
1903                         def_vram[def_vram_cnt++] = vram;
1904                 }
1905                 else if (!strncmp(this_opt, "vxres:", 6))
1906                         def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1907                 else if (!strncmp(this_opt, "vyres:", 6))
1908                         def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1909                 else if (!strncmp(this_opt, "rotate:", 7))
1910                         def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1911                 else if (!strncmp(this_opt, "mirror:", 7))
1912                         def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1913                 else if (!strncmp(this_opt, "manual_update", 13))
1914                         manual_update = 1;
1915                 else {
1916                         pr_debug("omapfb: invalid option\n");
1917                         r = -1;
1918                 }
1919         }
1920
1921         return r;
1922 }
1923
1924 #endif
1925
1926 /* Register both the driver and the device */
1927 static int __init omapfb_init(void)
1928 {
1929 #ifndef MODULE
1930         char *option;
1931
1932         if (fb_get_options("omapfb", &option))
1933                 return -ENODEV;
1934         omapfb_setup(option);
1935 #endif
1936         /* Register the driver with LDM */
1937         if (platform_driver_register(&omapfb_driver)) {
1938                 pr_debug("failed to register omapfb driver\n");
1939                 return -ENODEV;
1940         }
1941
1942         return 0;
1943 }
1944
1945 static void __exit omapfb_cleanup(void)
1946 {
1947         platform_driver_unregister(&omapfb_driver);
1948 }
1949
1950 module_param_named(accel, def_accel, uint, 0664);
1951 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1952 module_param_named(vxres, def_vxres, long, 0664);
1953 module_param_named(vyres, def_vyres, long, 0664);
1954 module_param_named(rotate, def_rotate, uint, 0664);
1955 module_param_named(mirror, def_mirror, uint, 0664);
1956 module_param_named(manual_update, manual_update, bool, 0664);
1957
1958 module_init(omapfb_init);
1959 module_exit(omapfb_cleanup);
1960
1961 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1962 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1963 MODULE_LICENSE("GPL");