drivers/video/omap/omapfb_main.c

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