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/slab.h>
  30 #include <linux/uaccess.h>
  31 #include <linux/module.h>
  32
  33 #include <plat/dma.h>
  34
  35 #include "omapfb.h"
  36 #include "lcdc.h"
  37
  38 #define MODULE_NAME     "omapfb"
  39
  40 static unsigned int     def_accel;
  41 static unsigned long    def_vram[OMAPFB_PLANE_NUM];
  42 static unsigned int     def_vram_cnt;
  43 static unsigned long    def_vxres;
  44 static unsigned long    def_vyres;
  45 static unsigned int     def_rotate;
  46 static unsigned int     def_mirror;
  47
  48 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
  49 static bool             manual_update = 1;
  50 #else
  51 static bool             manual_update;
  52 #endif
  53
  54 static struct platform_device   *fbdev_pdev;
  55 static struct lcd_panel         *fbdev_panel;
  56 static struct omapfb_device     *omapfb_dev;
  57
  58 struct caps_table_struct {
  59         unsigned long flag;
  60         const char *name;
  61 };
  62
  63 static struct caps_table_struct ctrl_caps[] = {
  64         { OMAPFB_CAPS_MANUAL_UPDATE,  "manual update" },
  65         { OMAPFB_CAPS_TEARSYNC,       "tearing synchronization" },
  66         { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" },
  67         { OMAPFB_CAPS_PLANE_SCALE,    "scale plane" },
  68         { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" },
  69         { OMAPFB_CAPS_WINDOW_SCALE,   "scale window" },
  70         { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" },
  71         { OMAPFB_CAPS_WINDOW_ROTATE,  "rotate window" },
  72         { OMAPFB_CAPS_SET_BACKLIGHT,  "backlight setting" },
  73 };
  74
  75 static struct caps_table_struct color_caps[] = {
  76         { 1 << OMAPFB_COLOR_RGB565,     "RGB565", },
  77         { 1 << OMAPFB_COLOR_YUV422,     "YUV422", },
  78         { 1 << OMAPFB_COLOR_YUV420,     "YUV420", },
  79         { 1 << OMAPFB_COLOR_CLUT_8BPP,  "CLUT8", },
  80         { 1 << OMAPFB_COLOR_CLUT_4BPP,  "CLUT4", },
  81         { 1 << OMAPFB_COLOR_CLUT_2BPP,  "CLUT2", },
  82         { 1 << OMAPFB_COLOR_CLUT_1BPP,  "CLUT1", },
  83         { 1 << OMAPFB_COLOR_RGB444,     "RGB444", },
  84         { 1 << OMAPFB_COLOR_YUY422,     "YUY422", },
  85 };
  86
  87 static void omapdss_release(struct device *dev)
  88 {
  89 }
  90
  91 /* dummy device for clocks */
  92 static struct platform_device omapdss_device = {
  93         .name           = "omapdss_dss",
  94         .id             = -1,
  95         .dev            = {
  96                 .release = omapdss_release,
  97         },
  98 };
  99
 100 /*
 101  * ---------------------------------------------------------------------------
 102  * LCD panel
 103  * ---------------------------------------------------------------------------
 104  */
 105 extern struct lcd_ctrl hwa742_ctrl;
 106
 107 static const struct lcd_ctrl *ctrls[] = {
 108         &omap1_int_ctrl,
 109
 110 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
 111         &hwa742_ctrl,
 112 #endif
 113 };
 114
 115 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
 116 extern struct lcd_ctrl_extif omap1_ext_if;
 117 #endif
 118
 119 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
 120 {
 121         mutex_lock(&fbdev->rqueue_mutex);
 122 }
 123
 124 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
 125 {
 126         mutex_unlock(&fbdev->rqueue_mutex);
 127 }
 128
 129 /*
 130  * ---------------------------------------------------------------------------
 131  * LCD controller and LCD DMA
 132  * ---------------------------------------------------------------------------
 133  */
 134 /* Lookup table to map elem size to elem type. */
 135 static const int dma_elem_type[] = {
 136         0,
 137         OMAP_DMA_DATA_TYPE_S8,
 138         OMAP_DMA_DATA_TYPE_S16,
 139         0,
 140         OMAP_DMA_DATA_TYPE_S32,
 141 };
 142
 143 /*
 144  * Allocate resources needed for LCD controller and LCD DMA operations. Video
 145  * memory is allocated from system memory according to the virtual display
 146  * size, except if a bigger memory size is specified explicitly as a kernel
 147  * parameter.
 148  */
 149 static int ctrl_init(struct omapfb_device *fbdev)
 150 {
 151         int r;
 152         int i;
 153
 154         /* kernel/module vram parameters override boot tags/board config */
 155         if (def_vram_cnt) {
 156                 for (i = 0; i < def_vram_cnt; i++)
 157                         fbdev->mem_desc.region[i].size =
 158                                 PAGE_ALIGN(def_vram[i]);
 159                 fbdev->mem_desc.region_cnt = i;
 160         }
 161
 162         if (!fbdev->mem_desc.region_cnt) {
 163                 struct lcd_panel *panel = fbdev->panel;
 164                 int def_size;
 165                 int bpp = panel->bpp;
 166
 167                 /* 12 bpp is packed in 16 bits */
 168                 if (bpp == 12)
 169                         bpp = 16;
 170                 def_size = def_vxres * def_vyres * bpp / 8;
 171                 fbdev->mem_desc.region_cnt = 1;
 172                 fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
 173         }
 174         r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
 175         if (r < 0) {
 176                 dev_err(fbdev->dev, "controller initialization failed (%d)\n",
 177                         r);
 178                 return r;
 179         }
 180
 181 #ifdef DEBUG
 182         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
 183                 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
 184                          i,
 185                          fbdev->mem_desc.region[i].paddr,
 186                          fbdev->mem_desc.region[i].vaddr,
 187                          fbdev->mem_desc.region[i].size);
 188         }
 189 #endif
 190         return 0;
 191 }
 192
 193 static void ctrl_cleanup(struct omapfb_device *fbdev)
 194 {
 195         fbdev->ctrl->cleanup();
 196 }
 197
 198 /* Must be called with fbdev->rqueue_mutex held. */
 199 static int ctrl_change_mode(struct fb_info *fbi)
 200 {
 201         int r;
 202         unsigned long offset;
 203         struct omapfb_plane_struct *plane = fbi->par;
 204         struct omapfb_device *fbdev = plane->fbdev;
 205         struct fb_var_screeninfo *var = &fbi->var;
 206
 207         offset = var->yoffset * fbi->fix.line_length +
 208                  var->xoffset * var->bits_per_pixel / 8;
 209
 210         if (fbdev->ctrl->sync)
 211                 fbdev->ctrl->sync();
 212         r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
 213                                  offset, var->xres_virtual,
 214                                  plane->info.pos_x, plane->info.pos_y,
 215                                  var->xres, var->yres, plane->color_mode);
 216         if (r < 0)
 217                 return r;
 218
 219         if (fbdev->ctrl->set_rotate != NULL) {
 220                 r = fbdev->ctrl->set_rotate(var->rotate);
 221                 if (r < 0)
 222                         return r;
 223         }
 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 FB_BLANK_UNBLANK:
 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 FB_BLANK_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, int from_init)
 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        = rg->vaddr;
 403
 404         if (!from_init) {
 405                 mutex_lock(&fbi->mm_lock);
 406                 fix->smem_start         = rg->paddr;
 407                 fix->smem_len           = rg->size;
 408                 mutex_unlock(&fbi->mm_lock);
 409         } else {
 410                 fix->smem_start         = rg->paddr;
 411                 fix->smem_len           = rg->size;
 412         }
 413
 414         fix->type = FB_TYPE_PACKED_PIXELS;
 415         bpp = var->bits_per_pixel;
 416         if (var->nonstd)
 417                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 418         else switch (var->bits_per_pixel) {
 419         case 16:
 420         case 12:
 421                 fix->visual = FB_VISUAL_TRUECOLOR;
 422                 /* 12bpp is stored in 16 bits */
 423                 bpp = 16;
 424                 break;
 425         case 1:
 426         case 2:
 427         case 4:
 428         case 8:
 429                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 430                 break;
 431         }
 432         fix->accel              = FB_ACCEL_OMAP1610;
 433         fix->line_length        = var->xres_virtual * bpp / 8;
 434 }
 435
 436 static int set_color_mode(struct omapfb_plane_struct *plane,
 437                           struct fb_var_screeninfo *var)
 438 {
 439         switch (var->nonstd) {
 440         case 0:
 441                 break;
 442         case OMAPFB_COLOR_YUV422:
 443                 var->bits_per_pixel = 16;
 444                 plane->color_mode = var->nonstd;
 445                 return 0;
 446         case OMAPFB_COLOR_YUV420:
 447                 var->bits_per_pixel = 12;
 448                 plane->color_mode = var->nonstd;
 449                 return 0;
 450         case OMAPFB_COLOR_YUY422:
 451                 var->bits_per_pixel = 16;
 452                 plane->color_mode = var->nonstd;
 453                 return 0;
 454         default:
 455                 return -EINVAL;
 456         }
 457
 458         switch (var->bits_per_pixel) {
 459         case 1:
 460                 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
 461                 return 0;
 462         case 2:
 463                 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
 464                 return 0;
 465         case 4:
 466                 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
 467                 return 0;
 468         case 8:
 469                 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
 470                 return 0;
 471         case 12:
 472                 var->bits_per_pixel = 16;
 473         case 16:
 474                 if (plane->fbdev->panel->bpp == 12)
 475                         plane->color_mode = OMAPFB_COLOR_RGB444;
 476                 else
 477                         plane->color_mode = OMAPFB_COLOR_RGB565;
 478                 return 0;
 479         default:
 480                 return -EINVAL;
 481         }
 482 }
 483
 484 /*
 485  * Check the values in var against our capabilities and in case of out of
 486  * bound values try to adjust them.
 487  */
 488 static int set_fb_var(struct fb_info *fbi,
 489                       struct fb_var_screeninfo *var)
 490 {
 491         int             bpp;
 492         unsigned long   max_frame_size;
 493         unsigned long   line_size;
 494         int             xres_min, xres_max;
 495         int             yres_min, yres_max;
 496         struct omapfb_plane_struct *plane = fbi->par;
 497         struct omapfb_device *fbdev = plane->fbdev;
 498         struct lcd_panel *panel = fbdev->panel;
 499
 500         if (set_color_mode(plane, var) < 0)
 501                 return -EINVAL;
 502
 503         bpp = var->bits_per_pixel;
 504         if (plane->color_mode == OMAPFB_COLOR_RGB444)
 505                 bpp = 16;
 506
 507         switch (var->rotate) {
 508         case 0:
 509         case 180:
 510                 xres_min = OMAPFB_PLANE_XRES_MIN;
 511                 xres_max = panel->x_res;
 512                 yres_min = OMAPFB_PLANE_YRES_MIN;
 513                 yres_max = panel->y_res;
 514                 if (cpu_is_omap15xx()) {
 515                         var->xres = panel->x_res;
 516                         var->yres = panel->y_res;
 517                 }
 518                 break;
 519         case 90:
 520         case 270:
 521                 xres_min = OMAPFB_PLANE_YRES_MIN;
 522                 xres_max = panel->y_res;
 523                 yres_min = OMAPFB_PLANE_XRES_MIN;
 524                 yres_max = panel->x_res;
 525                 if (cpu_is_omap15xx()) {
 526                         var->xres = panel->y_res;
 527                         var->yres = panel->x_res;
 528                 }
 529                 break;
 530         default:
 531                 return -EINVAL;
 532         }
 533
 534         if (var->xres < xres_min)
 535                 var->xres = xres_min;
 536         if (var->yres < yres_min)
 537                 var->yres = yres_min;
 538         if (var->xres > xres_max)
 539                 var->xres = xres_max;
 540         if (var->yres > yres_max)
 541                 var->yres = yres_max;
 542
 543         if (var->xres_virtual < var->xres)
 544                 var->xres_virtual = var->xres;
 545         if (var->yres_virtual < var->yres)
 546                 var->yres_virtual = var->yres;
 547         max_frame_size = fbdev->mem_desc.region[plane->idx].size;
 548         line_size = var->xres_virtual * bpp / 8;
 549         if (line_size * var->yres_virtual > max_frame_size) {
 550                 /* Try to keep yres_virtual first */
 551                 line_size = max_frame_size / var->yres_virtual;
 552                 var->xres_virtual = line_size * 8 / bpp;
 553                 if (var->xres_virtual < var->xres) {
 554                         /* Still doesn't fit. Shrink yres_virtual too */
 555                         var->xres_virtual = var->xres;
 556                         line_size = var->xres * bpp / 8;
 557                         var->yres_virtual = max_frame_size / line_size;
 558                 }
 559                 /* Recheck this, as the virtual size changed. */
 560                 if (var->xres_virtual < var->xres)
 561                         var->xres = var->xres_virtual;
 562                 if (var->yres_virtual < var->yres)
 563                         var->yres = var->yres_virtual;
 564                 if (var->xres < xres_min || var->yres < yres_min)
 565                         return -EINVAL;
 566         }
 567         if (var->xres + var->xoffset > var->xres_virtual)
 568                 var->xoffset = var->xres_virtual - var->xres;
 569         if (var->yres + var->yoffset > var->yres_virtual)
 570                 var->yoffset = var->yres_virtual - var->yres;
 571
 572         if (plane->color_mode == OMAPFB_COLOR_RGB444) {
 573                 var->red.offset   = 8; var->red.length   = 4;
 574                                                 var->red.msb_right   = 0;
 575                 var->green.offset = 4; var->green.length = 4;
 576                                                 var->green.msb_right = 0;
 577                 var->blue.offset  = 0; var->blue.length  = 4;
 578                                                 var->blue.msb_right  = 0;
 579         } else {
 580                 var->red.offset  = 11; var->red.length   = 5;
 581                                                 var->red.msb_right   = 0;
 582                 var->green.offset = 5;  var->green.length = 6;
 583                                                 var->green.msb_right = 0;
 584                 var->blue.offset = 0;  var->blue.length  = 5;
 585                                                 var->blue.msb_right  = 0;
 586         }
 587
 588         var->height             = -1;
 589         var->width              = -1;
 590         var->grayscale          = 0;
 591
 592         /* pixclock in ps, the rest in pixclock */
 593         var->pixclock           = 10000000 / (panel->pixel_clock / 100);
 594         var->left_margin        = panel->hfp;
 595         var->right_margin       = panel->hbp;
 596         var->upper_margin       = panel->vfp;
 597         var->lower_margin       = panel->vbp;
 598         var->hsync_len          = panel->hsw;
 599         var->vsync_len          = panel->vsw;
 600
 601         /* TODO: get these from panel->config */
 602         var->vmode              = FB_VMODE_NONINTERLACED;
 603         var->sync               = 0;
 604
 605         return 0;
 606 }
 607
 608
 609 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
 610 static void omapfb_rotate(struct fb_info *fbi, int rotate)
 611 {
 612         struct omapfb_plane_struct *plane = fbi->par;
 613         struct omapfb_device *fbdev = plane->fbdev;
 614
 615         omapfb_rqueue_lock(fbdev);
 616         if (rotate != fbi->var.rotate) {
 617                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 618
 619                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 620                 new_var->rotate = rotate;
 621                 if (set_fb_var(fbi, new_var) == 0 &&
 622                     memcmp(new_var, &fbi->var, sizeof(*new_var))) {
 623                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 624                         ctrl_change_mode(fbi);
 625                 }
 626         }
 627         omapfb_rqueue_unlock(fbdev);
 628 }
 629
 630 /*
 631  * Set new x,y offsets in the virtual display for the visible area and switch
 632  * to the new mode.
 633  */
 634 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 635                                struct fb_info *fbi)
 636 {
 637         struct omapfb_plane_struct *plane = fbi->par;
 638         struct omapfb_device *fbdev = plane->fbdev;
 639         int r = 0;
 640
 641         omapfb_rqueue_lock(fbdev);
 642         if (var->xoffset != fbi->var.xoffset ||
 643             var->yoffset != fbi->var.yoffset) {
 644                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 645
 646                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 647                 new_var->xoffset = var->xoffset;
 648                 new_var->yoffset = var->yoffset;
 649                 if (set_fb_var(fbi, new_var))
 650                         r = -EINVAL;
 651                 else {
 652                         memcpy(&fbi->var, new_var, sizeof(*new_var));
 653                         ctrl_change_mode(fbi);
 654                 }
 655         }
 656         omapfb_rqueue_unlock(fbdev);
 657
 658         return r;
 659 }
 660
 661 /* Set mirror to vertical axis and switch to the new mode. */
 662 static int omapfb_mirror(struct fb_info *fbi, int mirror)
 663 {
 664         struct omapfb_plane_struct *plane = fbi->par;
 665         struct omapfb_device *fbdev = plane->fbdev;
 666         int r = 0;
 667
 668         omapfb_rqueue_lock(fbdev);
 669         mirror = mirror ? 1 : 0;
 670         if (cpu_is_omap15xx())
 671                 r = -EINVAL;
 672         else if (mirror != plane->info.mirror) {
 673                 plane->info.mirror = mirror;
 674                 r = ctrl_change_mode(fbi);
 675         }
 676         omapfb_rqueue_unlock(fbdev);
 677
 678         return r;
 679 }
 680
 681 /*
 682  * Check values in var, try to adjust them in case of out of bound values if
 683  * possible, or return error.
 684  */
 685 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 686 {
 687         struct omapfb_plane_struct *plane = fbi->par;
 688         struct omapfb_device *fbdev = plane->fbdev;
 689         int r;
 690
 691         omapfb_rqueue_lock(fbdev);
 692         if (fbdev->ctrl->sync != NULL)
 693                 fbdev->ctrl->sync();
 694         r = set_fb_var(fbi, var);
 695         omapfb_rqueue_unlock(fbdev);
 696
 697         return r;
 698 }
 699
 700 /*
 701  * Switch to a new mode. The parameters for it has been check already by
 702  * omapfb_check_var.
 703  */
 704 static int omapfb_set_par(struct fb_info *fbi)
 705 {
 706         struct omapfb_plane_struct *plane = fbi->par;
 707         struct omapfb_device *fbdev = plane->fbdev;
 708         int r = 0;
 709
 710         omapfb_rqueue_lock(fbdev);
 711         set_fb_fix(fbi, 0);
 712         r = ctrl_change_mode(fbi);
 713         omapfb_rqueue_unlock(fbdev);
 714
 715         return r;
 716 }
 717
 718 int omapfb_update_window_async(struct fb_info *fbi,
 719                                 struct omapfb_update_window *win,
 720                                 void (*callback)(void *),
 721                                 void *callback_data)
 722 {
 723         int xres, yres;
 724         struct omapfb_plane_struct *plane = fbi->par;
 725         struct omapfb_device *fbdev = plane->fbdev;
 726         struct fb_var_screeninfo *var = &fbi->var;
 727
 728         switch (var->rotate) {
 729         case 0:
 730         case 180:
 731                 xres = fbdev->panel->x_res;
 732                 yres = fbdev->panel->y_res;
 733                 break;
 734         case 90:
 735         case 270:
 736                 xres = fbdev->panel->y_res;
 737                 yres = fbdev->panel->x_res;
 738                 break;
 739         default:
 740                 return -EINVAL;
 741         }
 742
 743         if (win->x >= xres || win->y >= yres ||
 744             win->out_x > xres || win->out_y > yres)
 745                 return -EINVAL;
 746
 747         if (!fbdev->ctrl->update_window ||
 748             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 749                 return -ENODEV;
 750
 751         if (win->x + win->width > xres)
 752                 win->width = xres - win->x;
 753         if (win->y + win->height > yres)
 754                 win->height = yres - win->y;
 755         if (win->out_x + win->out_width > xres)
 756                 win->out_width = xres - win->out_x;
 757         if (win->out_y + win->out_height > yres)
 758                 win->out_height = yres - win->out_y;
 759         if (!win->width || !win->height || !win->out_width || !win->out_height)
 760                 return 0;
 761
 762         return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
 763 }
 764 EXPORT_SYMBOL(omapfb_update_window_async);
 765
 766 static int omapfb_update_win(struct fb_info *fbi,
 767                                 struct omapfb_update_window *win)
 768 {
 769         struct omapfb_plane_struct *plane = fbi->par;
 770         int ret;
 771
 772         omapfb_rqueue_lock(plane->fbdev);
 773         ret = omapfb_update_window_async(fbi, win, NULL, NULL);
 774         omapfb_rqueue_unlock(plane->fbdev);
 775
 776         return ret;
 777 }
 778
 779 static int omapfb_update_full_screen(struct fb_info *fbi)
 780 {
 781         struct omapfb_plane_struct *plane = fbi->par;
 782         struct omapfb_device *fbdev = plane->fbdev;
 783         struct omapfb_update_window win;
 784         int r;
 785
 786         if (!fbdev->ctrl->update_window ||
 787             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 788                 return -ENODEV;
 789
 790         win.x = 0;
 791         win.y = 0;
 792         win.width = fbi->var.xres;
 793         win.height = fbi->var.yres;
 794         win.out_x = 0;
 795         win.out_y = 0;
 796         win.out_width = fbi->var.xres;
 797         win.out_height = fbi->var.yres;
 798         win.format = 0;
 799
 800         omapfb_rqueue_lock(fbdev);
 801         r = fbdev->ctrl->update_window(fbi, &win, NULL, NULL);
 802         omapfb_rqueue_unlock(fbdev);
 803
 804         return r;
 805 }
 806
 807 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 808 {
 809         struct omapfb_plane_struct *plane = fbi->par;
 810         struct omapfb_device *fbdev = plane->fbdev;
 811         struct lcd_panel *panel = fbdev->panel;
 812         struct omapfb_plane_info old_info;
 813         int r = 0;
 814
 815         if (pi->pos_x + pi->out_width > panel->x_res ||
 816             pi->pos_y + pi->out_height > panel->y_res)
 817                 return -EINVAL;
 818
 819         omapfb_rqueue_lock(fbdev);
 820         if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
 821                 /*
 822                  * This plane's memory was freed, can't enable it
 823                  * until it's reallocated.
 824                  */
 825                 r = -EINVAL;
 826                 goto out;
 827         }
 828         old_info = plane->info;
 829         plane->info = *pi;
 830         if (pi->enabled) {
 831                 r = ctrl_change_mode(fbi);
 832                 if (r < 0) {
 833                         plane->info = old_info;
 834                         goto out;
 835                 }
 836         }
 837         r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
 838         if (r < 0) {
 839                 plane->info = old_info;
 840                 goto out;
 841         }
 842 out:
 843         omapfb_rqueue_unlock(fbdev);
 844         return r;
 845 }
 846
 847 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 848 {
 849         struct omapfb_plane_struct *plane = fbi->par;
 850
 851         *pi = plane->info;
 852         return 0;
 853 }
 854
 855 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 856 {
 857         struct omapfb_plane_struct *plane = fbi->par;
 858         struct omapfb_device *fbdev = plane->fbdev;
 859         struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
 860         size_t size;
 861         int r = 0;
 862
 863         if (fbdev->ctrl->setup_mem == NULL)
 864                 return -ENODEV;
 865         if (mi->type != OMAPFB_MEMTYPE_SDRAM)
 866                 return -EINVAL;
 867
 868         size = PAGE_ALIGN(mi->size);
 869         omapfb_rqueue_lock(fbdev);
 870         if (plane->info.enabled) {
 871                 r = -EBUSY;
 872                 goto out;
 873         }
 874         if (rg->size != size || rg->type != mi->type) {
 875                 struct fb_var_screeninfo *new_var = &fbdev->new_var;
 876                 unsigned long old_size = rg->size;
 877                 u8            old_type = rg->type;
 878                 unsigned long paddr;
 879
 880                 rg->size = size;
 881                 rg->type = mi->type;
 882                 /*
 883                  * size == 0 is a special case, for which we
 884                  * don't check / adjust the screen parameters.
 885                  * This isn't a problem since the plane can't
 886                  * be reenabled unless its size is > 0.
 887                  */
 888                 if (old_size != size && size) {
 889                         if (size) {
 890                                 memcpy(new_var, &fbi->var, sizeof(*new_var));
 891                                 r = set_fb_var(fbi, new_var);
 892                                 if (r < 0)
 893                                         goto out;
 894                         }
 895                 }
 896
 897                 if (fbdev->ctrl->sync)
 898                         fbdev->ctrl->sync();
 899                 r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
 900                 if (r < 0) {
 901                         /* Revert changes. */
 902                         rg->size = old_size;
 903                         rg->type = old_type;
 904                         goto out;
 905                 }
 906                 rg->paddr = paddr;
 907
 908                 if (old_size != size) {
 909                         if (size) {
 910                                 memcpy(&fbi->var, new_var, sizeof(fbi->var));
 911                                 set_fb_fix(fbi, 0);
 912                         } else {
 913                                 /*
 914                                  * Set these explicitly to indicate that the
 915                                  * plane memory is dealloce'd, the other
 916                                  * screen parameters in var / fix are invalid.
 917                                  */
 918                                 mutex_lock(&fbi->mm_lock);
 919                                 fbi->fix.smem_start = 0;
 920                                 fbi->fix.smem_len = 0;
 921                                 mutex_unlock(&fbi->mm_lock);
 922                         }
 923                 }
 924         }
 925 out:
 926         omapfb_rqueue_unlock(fbdev);
 927
 928         return r;
 929 }
 930
 931 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 932 {
 933         struct omapfb_plane_struct *plane = fbi->par;
 934         struct omapfb_device *fbdev = plane->fbdev;
 935         struct omapfb_mem_region *rg;
 936
 937         rg = &fbdev->mem_desc.region[plane->idx];
 938         memset(mi, 0, sizeof(*mi));
 939         mi->size = rg->size;
 940         mi->type = rg->type;
 941
 942         return 0;
 943 }
 944
 945 static int omapfb_set_color_key(struct omapfb_device *fbdev,
 946                                 struct omapfb_color_key *ck)
 947 {
 948         int r;
 949
 950         if (!fbdev->ctrl->set_color_key)
 951                 return -ENODEV;
 952
 953         omapfb_rqueue_lock(fbdev);
 954         r = fbdev->ctrl->set_color_key(ck);
 955         omapfb_rqueue_unlock(fbdev);
 956
 957         return r;
 958 }
 959
 960 static int omapfb_get_color_key(struct omapfb_device *fbdev,
 961                                 struct omapfb_color_key *ck)
 962 {
 963         int r;
 964
 965         if (!fbdev->ctrl->get_color_key)
 966                 return -ENODEV;
 967
 968         omapfb_rqueue_lock(fbdev);
 969         r = fbdev->ctrl->get_color_key(ck);
 970         omapfb_rqueue_unlock(fbdev);
 971
 972         return r;
 973 }
 974
 975 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
 976 static int notifier_inited;
 977
 978 static void omapfb_init_notifier(void)
 979 {
 980         int i;
 981
 982         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
 983                 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
 984 }
 985
 986 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
 987                                 omapfb_notifier_callback_t callback,
 988                                 void *callback_data)
 989 {
 990         int r;
 991
 992         if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
 993                 return -EINVAL;
 994
 995         if (!notifier_inited) {
 996                 omapfb_init_notifier();
 997                 notifier_inited = 1;
 998         }
 999
1000         omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
1001                                         unsigned long, void *))callback;
1002         omapfb_nb->data = callback_data;
1003         r = blocking_notifier_chain_register(
1004                                 &omapfb_client_list[omapfb_nb->plane_idx],
1005                                 &omapfb_nb->nb);
1006         if (r)
1007                 return r;
1008         if (omapfb_dev != NULL &&
1009             omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
1010                 omapfb_dev->ctrl->bind_client(omapfb_nb);
1011         }
1012
1013         return 0;
1014 }
1015 EXPORT_SYMBOL(omapfb_register_client);
1016
1017 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
1018 {
1019         return blocking_notifier_chain_unregister(
1020                 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
1021 }
1022 EXPORT_SYMBOL(omapfb_unregister_client);
1023
1024 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
1025 {
1026         int i;
1027
1028         if (!notifier_inited)
1029                 /* no client registered yet */
1030                 return;
1031
1032         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
1033                 blocking_notifier_call_chain(&omapfb_client_list[i], event,
1034                                     fbdev->fb_info[i]);
1035 }
1036 EXPORT_SYMBOL(omapfb_notify_clients);
1037
1038 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
1039                                    enum omapfb_update_mode mode)
1040 {
1041         int r;
1042
1043         omapfb_rqueue_lock(fbdev);
1044         r = fbdev->ctrl->set_update_mode(mode);
1045         omapfb_rqueue_unlock(fbdev);
1046
1047         return r;
1048 }
1049
1050 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
1051 {
1052         int r;
1053
1054         omapfb_rqueue_lock(fbdev);
1055         r = fbdev->ctrl->get_update_mode();
1056         omapfb_rqueue_unlock(fbdev);
1057
1058         return r;
1059 }
1060
1061 static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
1062                                      struct omapfb_caps *caps)
1063 {
1064         memset(caps, 0, sizeof(*caps));
1065         fbdev->ctrl->get_caps(plane, caps);
1066         caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
1067 }
1068
1069 /* For lcd testing */
1070 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
1071 {
1072         omapfb_rqueue_lock(fbdev);
1073         *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
1074         if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
1075                 struct omapfb_update_window win;
1076
1077                 memset(&win, 0, sizeof(win));
1078                 win.width = 2;
1079                 win.height = 2;
1080                 win.out_width = 2;
1081                 win.out_height = 2;
1082                 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, NULL);
1083         }
1084         omapfb_rqueue_unlock(fbdev);
1085 }
1086 EXPORT_SYMBOL(omapfb_write_first_pixel);
1087
1088 /*
1089  * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
1090  * here to be accessible by user mode code.
1091  */
1092 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
1093                         unsigned long arg)
1094 {
1095         struct omapfb_plane_struct *plane = fbi->par;
1096         struct omapfb_device    *fbdev = plane->fbdev;
1097         struct fb_ops           *ops = fbi->fbops;
1098         union {
1099                 struct omapfb_update_window     update_window;
1100                 struct omapfb_plane_info        plane_info;
1101                 struct omapfb_mem_info          mem_info;
1102                 struct omapfb_color_key         color_key;
1103                 enum omapfb_update_mode         update_mode;
1104                 struct omapfb_caps              caps;
1105                 unsigned int            mirror;
1106                 int                     plane_out;
1107                 int                     enable_plane;
1108         } p;
1109         int r = 0;
1110
1111         BUG_ON(!ops);
1112         switch (cmd) {
1113         case OMAPFB_MIRROR:
1114                 if (get_user(p.mirror, (int __user *)arg))
1115                         r = -EFAULT;
1116                 else
1117                         omapfb_mirror(fbi, p.mirror);
1118                 break;
1119         case OMAPFB_SYNC_GFX:
1120                 omapfb_sync(fbi);
1121                 break;
1122         case OMAPFB_VSYNC:
1123                 break;
1124         case OMAPFB_SET_UPDATE_MODE:
1125                 if (get_user(p.update_mode, (int __user *)arg))
1126                         r = -EFAULT;
1127                 else
1128                         r = omapfb_set_update_mode(fbdev, p.update_mode);
1129                 break;
1130         case OMAPFB_GET_UPDATE_MODE:
1131                 p.update_mode = omapfb_get_update_mode(fbdev);
1132                 if (put_user(p.update_mode,
1133                                         (enum omapfb_update_mode __user *)arg))
1134                         r = -EFAULT;
1135                 break;
1136         case OMAPFB_UPDATE_WINDOW_OLD:
1137                 if (copy_from_user(&p.update_window, (void __user *)arg,
1138                                    sizeof(struct omapfb_update_window_old)))
1139                         r = -EFAULT;
1140                 else {
1141                         struct omapfb_update_window *u = &p.update_window;
1142                         u->out_x = u->x;
1143                         u->out_y = u->y;
1144                         u->out_width = u->width;
1145                         u->out_height = u->height;
1146                         memset(u->reserved, 0, sizeof(u->reserved));
1147                         r = omapfb_update_win(fbi, u);
1148                 }
1149                 break;
1150         case OMAPFB_UPDATE_WINDOW:
1151                 if (copy_from_user(&p.update_window, (void __user *)arg,
1152                                    sizeof(p.update_window)))
1153                         r = -EFAULT;
1154                 else
1155                         r = omapfb_update_win(fbi, &p.update_window);
1156                 break;
1157         case OMAPFB_SETUP_PLANE:
1158                 if (copy_from_user(&p.plane_info, (void __user *)arg,
1159                                    sizeof(p.plane_info)))
1160                         r = -EFAULT;
1161                 else
1162                         r = omapfb_setup_plane(fbi, &p.plane_info);
1163                 break;
1164         case OMAPFB_QUERY_PLANE:
1165                 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
1166                         break;
1167                 if (copy_to_user((void __user *)arg, &p.plane_info,
1168                                    sizeof(p.plane_info)))
1169                         r = -EFAULT;
1170                 break;
1171         case OMAPFB_SETUP_MEM:
1172                 if (copy_from_user(&p.mem_info, (void __user *)arg,
1173                                    sizeof(p.mem_info)))
1174                         r = -EFAULT;
1175                 else
1176                         r = omapfb_setup_mem(fbi, &p.mem_info);
1177                 break;
1178         case OMAPFB_QUERY_MEM:
1179                 if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
1180                         break;
1181                 if (copy_to_user((void __user *)arg, &p.mem_info,
1182                                    sizeof(p.mem_info)))
1183                         r = -EFAULT;
1184                 break;
1185         case OMAPFB_SET_COLOR_KEY:
1186                 if (copy_from_user(&p.color_key, (void __user *)arg,
1187                                    sizeof(p.color_key)))
1188                         r = -EFAULT;
1189                 else
1190                         r = omapfb_set_color_key(fbdev, &p.color_key);
1191                 break;
1192         case OMAPFB_GET_COLOR_KEY:
1193                 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
1194                         break;
1195                 if (copy_to_user((void __user *)arg, &p.color_key,
1196                                  sizeof(p.color_key)))
1197                         r = -EFAULT;
1198                 break;
1199         case OMAPFB_GET_CAPS:
1200                 omapfb_get_caps(fbdev, plane->idx, &p.caps);
1201                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
1202                         r = -EFAULT;
1203                 break;
1204         case OMAPFB_LCD_TEST:
1205                 {
1206                         int test_num;
1207
1208                         if (get_user(test_num, (int __user *)arg)) {
1209                                 r = -EFAULT;
1210                                 break;
1211                         }
1212                         if (!fbdev->panel->run_test) {
1213                                 r = -EINVAL;
1214                                 break;
1215                         }
1216                         r = fbdev->panel->run_test(fbdev->panel, test_num);
1217                         break;
1218                 }
1219         case OMAPFB_CTRL_TEST:
1220                 {
1221                         int test_num;
1222
1223                         if (get_user(test_num, (int __user *)arg)) {
1224                                 r = -EFAULT;
1225                                 break;
1226                         }
1227                         if (!fbdev->ctrl->run_test) {
1228                                 r = -EINVAL;
1229                                 break;
1230                         }
1231                         r = fbdev->ctrl->run_test(test_num);
1232                         break;
1233                 }
1234         default:
1235                 r = -EINVAL;
1236         }
1237
1238         return r;
1239 }
1240
1241 static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
1242 {
1243         struct omapfb_plane_struct *plane = info->par;
1244         struct omapfb_device *fbdev = plane->fbdev;
1245         int r;
1246
1247         omapfb_rqueue_lock(fbdev);
1248         r = fbdev->ctrl->mmap(info, vma);
1249         omapfb_rqueue_unlock(fbdev);
1250
1251         return r;
1252 }
1253
1254 /*
1255  * Callback table for the frame buffer framework. Some of these pointers
1256  * will be changed according to the current setting of fb_info->accel_flags.
1257  */
1258 static struct fb_ops omapfb_ops = {
1259         .owner          = THIS_MODULE,
1260         .fb_open        = omapfb_open,
1261         .fb_release     = omapfb_release,
1262         .fb_setcolreg   = omapfb_setcolreg,
1263         .fb_setcmap     = omapfb_setcmap,
1264         .fb_fillrect    = cfb_fillrect,
1265         .fb_copyarea    = cfb_copyarea,
1266         .fb_imageblit   = cfb_imageblit,
1267         .fb_blank       = omapfb_blank,
1268         .fb_ioctl       = omapfb_ioctl,
1269         .fb_check_var   = omapfb_check_var,
1270         .fb_set_par     = omapfb_set_par,
1271         .fb_rotate      = omapfb_rotate,
1272         .fb_pan_display = omapfb_pan_display,
1273 };
1274
1275 /*
1276  * ---------------------------------------------------------------------------
1277  * Sysfs interface
1278  * ---------------------------------------------------------------------------
1279  */
1280 /* omapfbX sysfs entries */
1281 static ssize_t omapfb_show_caps_num(struct device *dev,
1282                                     struct device_attribute *attr, char *buf)
1283 {
1284         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1285         int plane;
1286         size_t size;
1287         struct omapfb_caps caps;
1288
1289         plane = 0;
1290         size = 0;
1291         while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1292                 omapfb_get_caps(fbdev, plane, &caps);
1293                 size += snprintf(&buf[size], PAGE_SIZE - size,
1294                         "plane#%d %#010x %#010x %#010x\n",
1295                         plane, caps.ctrl, caps.plane_color, caps.wnd_color);
1296                 plane++;
1297         }
1298         return size;
1299 }
1300
1301 static ssize_t omapfb_show_caps_text(struct device *dev,
1302                                      struct device_attribute *attr, char *buf)
1303 {
1304         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1305         int i;
1306         struct omapfb_caps caps;
1307         int plane;
1308         size_t size;
1309
1310         plane = 0;
1311         size = 0;
1312         while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
1313                 omapfb_get_caps(fbdev, plane, &caps);
1314                 size += snprintf(&buf[size], PAGE_SIZE - size,
1315                                  "plane#%d:\n", plane);
1316                 for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
1317                      size < PAGE_SIZE; i++) {
1318                         if (ctrl_caps[i].flag & caps.ctrl)
1319                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1320                                         " %s\n", ctrl_caps[i].name);
1321                 }
1322                 size += snprintf(&buf[size], PAGE_SIZE - size,
1323                                  " plane colors:\n");
1324                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1325                      size < PAGE_SIZE; i++) {
1326                         if (color_caps[i].flag & caps.plane_color)
1327                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1328                                         "  %s\n", color_caps[i].name);
1329                 }
1330                 size += snprintf(&buf[size], PAGE_SIZE - size,
1331                                  " window colors:\n");
1332                 for (i = 0; i < ARRAY_SIZE(color_caps) &&
1333                      size < PAGE_SIZE; i++) {
1334                         if (color_caps[i].flag & caps.wnd_color)
1335                                 size += snprintf(&buf[size], PAGE_SIZE - size,
1336                                         "  %s\n", color_caps[i].name);
1337                 }
1338
1339                 plane++;
1340         }
1341         return size;
1342 }
1343
1344 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1345 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1346
1347 /* panel sysfs entries */
1348 static ssize_t omapfb_show_panel_name(struct device *dev,
1349                                       struct device_attribute *attr, char *buf)
1350 {
1351         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1352
1353         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1354 }
1355
1356 static ssize_t omapfb_show_bklight_level(struct device *dev,
1357                                          struct device_attribute *attr,
1358                                          char *buf)
1359 {
1360         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1361         int r;
1362
1363         if (fbdev->panel->get_bklight_level) {
1364                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1365                              fbdev->panel->get_bklight_level(fbdev->panel));
1366         } else
1367                 r = -ENODEV;
1368         return r;
1369 }
1370
1371 static ssize_t omapfb_store_bklight_level(struct device *dev,
1372                                           struct device_attribute *attr,
1373                                           const char *buf, size_t size)
1374 {
1375         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1376         int r;
1377
1378         if (fbdev->panel->set_bklight_level) {
1379                 unsigned int level;
1380
1381                 if (sscanf(buf, "%10d", &level) == 1) {
1382                         r = fbdev->panel->set_bklight_level(fbdev->panel,
1383                                                             level);
1384                 } else
1385                         r = -EINVAL;
1386         } else
1387                 r = -ENODEV;
1388         return r ? r : size;
1389 }
1390
1391 static ssize_t omapfb_show_bklight_max(struct device *dev,
1392                                        struct device_attribute *attr, char *buf)
1393 {
1394         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1395         int r;
1396
1397         if (fbdev->panel->get_bklight_level) {
1398                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1399                              fbdev->panel->get_bklight_max(fbdev->panel));
1400         } else
1401                 r = -ENODEV;
1402         return r;
1403 }
1404
1405 static struct device_attribute dev_attr_panel_name =
1406         __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1407 static DEVICE_ATTR(backlight_level, 0664,
1408                    omapfb_show_bklight_level, omapfb_store_bklight_level);
1409 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1410
1411 static struct attribute *panel_attrs[] = {
1412         &dev_attr_panel_name.attr,
1413         &dev_attr_backlight_level.attr,
1414         &dev_attr_backlight_max.attr,
1415         NULL,
1416 };
1417
1418 static struct attribute_group panel_attr_grp = {
1419         .name  = "panel",
1420         .attrs = panel_attrs,
1421 };
1422
1423 /* ctrl sysfs entries */
1424 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1425                                      struct device_attribute *attr, char *buf)
1426 {
1427         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1428
1429         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1430 }
1431
1432 static struct device_attribute dev_attr_ctrl_name =
1433         __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1434
1435 static struct attribute *ctrl_attrs[] = {
1436         &dev_attr_ctrl_name.attr,
1437         NULL,
1438 };
1439
1440 static struct attribute_group ctrl_attr_grp = {
1441         .name  = "ctrl",
1442         .attrs = ctrl_attrs,
1443 };
1444
1445 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1446 {
1447         int r;
1448
1449         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1450                 goto fail0;
1451
1452         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1453                 goto fail1;
1454
1455         if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1456                 goto fail2;
1457
1458         if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1459                 goto fail3;
1460
1461         return 0;
1462 fail3:
1463         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1464 fail2:
1465         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1466 fail1:
1467         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1468 fail0:
1469         dev_err(fbdev->dev, "unable to register sysfs interface\n");
1470         return r;
1471 }
1472
1473 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1474 {
1475         sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1476         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1477         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1478         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1479 }
1480
1481 /*
1482  * ---------------------------------------------------------------------------
1483  * LDM callbacks
1484  * ---------------------------------------------------------------------------
1485  */
1486 /* Initialize system fb_info object and set the default video mode.
1487  * The frame buffer memory already allocated by lcddma_init
1488  */
1489 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
1490 {
1491         struct fb_var_screeninfo        *var = &info->var;
1492         struct fb_fix_screeninfo        *fix = &info->fix;
1493         int                             r = 0;
1494
1495         info->fbops = &omapfb_ops;
1496         info->flags = FBINFO_FLAG_DEFAULT;
1497
1498         strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1499
1500         info->pseudo_palette = fbdev->pseudo_palette;
1501
1502         var->accel_flags  = def_accel ? FB_ACCELF_TEXT : 0;
1503         var->xres = def_vxres;
1504         var->yres = def_vyres;
1505         var->xres_virtual = def_vxres;
1506         var->yres_virtual = def_vyres;
1507         var->rotate       = def_rotate;
1508         var->bits_per_pixel = fbdev->panel->bpp;
1509
1510         set_fb_var(info, var);
1511         set_fb_fix(info, 1);
1512
1513         r = fb_alloc_cmap(&info->cmap, 16, 0);
1514         if (r != 0)
1515                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1516
1517         return r;
1518 }
1519
1520 /* Release the fb_info object */
1521 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1522 {
1523         fb_dealloc_cmap(&fbi->cmap);
1524 }
1525
1526 static void planes_cleanup(struct omapfb_device *fbdev)
1527 {
1528         int i;
1529
1530         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1531                 if (fbdev->fb_info[i] == NULL)
1532                         break;
1533                 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1534                 framebuffer_release(fbdev->fb_info[i]);
1535         }
1536 }
1537
1538 static int planes_init(struct omapfb_device *fbdev)
1539 {
1540         struct fb_info *fbi;
1541         int i;
1542         int r;
1543
1544         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1545                 struct omapfb_plane_struct *plane;
1546                 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1547                                         fbdev->dev);
1548                 if (fbi == NULL) {
1549                         dev_err(fbdev->dev,
1550                                 "unable to allocate memory for plane info\n");
1551                         planes_cleanup(fbdev);
1552                         return -ENOMEM;
1553                 }
1554                 plane = fbi->par;
1555                 plane->idx = i;
1556                 plane->fbdev = fbdev;
1557                 plane->info.mirror = def_mirror;
1558                 fbdev->fb_info[i] = fbi;
1559
1560                 if ((r = fbinfo_init(fbdev, fbi)) < 0) {
1561                         framebuffer_release(fbi);
1562                         planes_cleanup(fbdev);
1563                         return r;
1564                 }
1565                 plane->info.out_width = fbi->var.xres;
1566                 plane->info.out_height = fbi->var.yres;
1567         }
1568         return 0;
1569 }
1570
1571 /*
1572  * Free driver resources. Can be called to rollback an aborted initialization
1573  * sequence.
1574  */
1575 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1576 {
1577         int i;
1578
1579         switch (state) {
1580         case OMAPFB_ACTIVE:
1581                 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1582                         unregister_framebuffer(fbdev->fb_info[i]);
1583         case 7:
1584                 omapfb_unregister_sysfs(fbdev);
1585         case 6:
1586                 fbdev->panel->disable(fbdev->panel);
1587         case 5:
1588                 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1589         case 4:
1590                 planes_cleanup(fbdev);
1591         case 3:
1592                 ctrl_cleanup(fbdev);
1593         case 2:
1594                 fbdev->panel->cleanup(fbdev->panel);
1595         case 1:
1596                 dev_set_drvdata(fbdev->dev, NULL);
1597                 kfree(fbdev);
1598         case 0:
1599                 /* nothing to free */
1600                 break;
1601         default:
1602                 BUG();
1603         }
1604 }
1605
1606 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1607 {
1608         struct omapfb_platform_data *conf;
1609         char name[17];
1610         int i;
1611
1612         conf = fbdev->dev->platform_data;
1613
1614         fbdev->ctrl = NULL;
1615
1616         strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1617         name[sizeof(name) - 1] = '\0';
1618
1619         if (strcmp(name, "internal") == 0) {
1620                 fbdev->ctrl = fbdev->int_ctrl;
1621                 return 0;
1622         }
1623
1624         for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1625                 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1626                 if (strcmp(ctrls[i]->name, name) == 0) {
1627                         fbdev->ctrl = ctrls[i];
1628                         break;
1629                 }
1630         }
1631
1632         if (fbdev->ctrl == NULL) {
1633                 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1634                 return -1;
1635         }
1636
1637         return 0;
1638 }
1639
1640 static void check_required_callbacks(struct omapfb_device *fbdev)
1641 {
1642 #define _C(x) (fbdev->ctrl->x != NULL)
1643 #define _P(x) (fbdev->panel->x != NULL)
1644         BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1645         BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1646                  _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1647                  _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1648                  _P(get_caps)));
1649 #undef _P
1650 #undef _C
1651 }
1652
1653 /*
1654  * Called by LDM binding to probe and attach a new device.
1655  * Initialization sequence:
1656  *   1. allocate system omapfb_device structure
1657  *   2. select controller type according to platform configuration
1658  *      init LCD panel
1659  *   3. init LCD controller and LCD DMA
1660  *   4. init system fb_info structure for all planes
1661  *   5. setup video mode for first plane and enable it
1662  *   6. enable LCD panel
1663  *   7. register sysfs attributes
1664  *   OMAPFB_ACTIVE: register system fb_info structure for all planes
1665  */
1666 static int omapfb_do_probe(struct platform_device *pdev,
1667                                 struct lcd_panel *panel)
1668 {
1669         struct omapfb_device    *fbdev = NULL;
1670         int                     init_state;
1671         unsigned long           phz, hhz, vhz;
1672         unsigned long           vram;
1673         int                     i;
1674         int                     r = 0;
1675
1676         init_state = 0;
1677
1678         if (pdev->num_resources != 0) {
1679                 dev_err(&pdev->dev, "probed for an unknown device\n");
1680                 r = -ENODEV;
1681                 goto cleanup;
1682         }
1683
1684         if (pdev->dev.platform_data == NULL) {
1685                 dev_err(&pdev->dev, "missing platform data\n");
1686                 r = -ENOENT;
1687                 goto cleanup;
1688         }
1689
1690         fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1691         if (fbdev == NULL) {
1692                 dev_err(&pdev->dev,
1693                         "unable to allocate memory for device info\n");
1694                 r = -ENOMEM;
1695                 goto cleanup;
1696         }
1697         init_state++;
1698
1699         fbdev->dev = &pdev->dev;
1700         fbdev->panel = panel;
1701         fbdev->dssdev = &omapdss_device;
1702         platform_set_drvdata(pdev, fbdev);
1703
1704         mutex_init(&fbdev->rqueue_mutex);
1705
1706         fbdev->int_ctrl = &omap1_int_ctrl;
1707 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1708         fbdev->ext_if = &omap1_ext_if;
1709 #endif
1710         if (omapfb_find_ctrl(fbdev) < 0) {
1711                 dev_err(fbdev->dev,
1712                         "LCD controller not found, board not supported\n");
1713                 r = -ENODEV;
1714                 goto cleanup;
1715         }
1716
1717         r = fbdev->panel->init(fbdev->panel, fbdev);
1718         if (r)
1719                 goto cleanup;
1720
1721         pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1722
1723         def_vxres = def_vxres ? def_vxres : fbdev->panel->x_res;
1724         def_vyres = def_vyres ? def_vyres : fbdev->panel->y_res;
1725
1726         init_state++;
1727
1728         r = ctrl_init(fbdev);
1729         if (r)
1730                 goto cleanup;
1731         if (fbdev->ctrl->mmap != NULL)
1732                 omapfb_ops.fb_mmap = omapfb_mmap;
1733         init_state++;
1734
1735         check_required_callbacks(fbdev);
1736
1737         r = planes_init(fbdev);
1738         if (r)
1739                 goto cleanup;
1740         init_state++;
1741
1742 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1743         /* Set DMA priority for EMIFF access to highest */
1744         omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1745 #endif
1746
1747         r = ctrl_change_mode(fbdev->fb_info[0]);
1748         if (r) {
1749                 dev_err(fbdev->dev, "mode setting failed\n");
1750                 goto cleanup;
1751         }
1752
1753         /* GFX plane is enabled by default */
1754         r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1755         if (r)
1756                 goto cleanup;
1757
1758         omapfb_set_update_mode(fbdev, manual_update ?
1759                                    OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1760         init_state++;
1761
1762         r = fbdev->panel->enable(fbdev->panel);
1763         if (r)
1764                 goto cleanup;
1765         init_state++;
1766
1767         r = omapfb_register_sysfs(fbdev);
1768         if (r)
1769                 goto cleanup;
1770         init_state++;
1771
1772         vram = 0;
1773         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1774                 r = register_framebuffer(fbdev->fb_info[i]);
1775                 if (r != 0) {
1776                         dev_err(fbdev->dev,
1777                                 "registering framebuffer %d failed\n", i);
1778                         goto cleanup;
1779                 }
1780                 vram += fbdev->mem_desc.region[i].size;
1781         }
1782
1783         fbdev->state = OMAPFB_ACTIVE;
1784
1785         panel = fbdev->panel;
1786         phz = panel->pixel_clock * 1000;
1787         hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1788         vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1789
1790         omapfb_dev = fbdev;
1791
1792         pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1793                         vram, fbdev->mem_desc.region_cnt);
1794         pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1795                         "vfreq %lu.%lu Hz\n",
1796                         phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1797
1798         return 0;
1799
1800 cleanup:
1801         omapfb_free_resources(fbdev, init_state);
1802
1803         return r;
1804 }
1805
1806 static int omapfb_probe(struct platform_device *pdev)
1807 {
1808         int r;
1809
1810         BUG_ON(fbdev_pdev != NULL);
1811
1812         r = platform_device_register(&omapdss_device);
1813         if (r) {
1814                 dev_err(&pdev->dev, "can't register omapdss device\n");
1815                 return r;
1816         }
1817
1818         /* Delay actual initialization until the LCD is registered */
1819         fbdev_pdev = pdev;
1820         if (fbdev_panel != NULL)
1821                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1822         return 0;
1823 }
1824
1825 void omapfb_register_panel(struct lcd_panel *panel)
1826 {
1827         BUG_ON(fbdev_panel != NULL);
1828
1829         fbdev_panel = panel;
1830         if (fbdev_pdev != NULL)
1831                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1832 }
1833
1834 /* Called when the device is being detached from the driver */
1835 static int omapfb_remove(struct platform_device *pdev)
1836 {
1837         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1838         enum omapfb_state saved_state = fbdev->state;
1839
1840         /* FIXME: wait till completion of pending events */
1841
1842         fbdev->state = OMAPFB_DISABLED;
1843         omapfb_free_resources(fbdev, saved_state);
1844
1845         platform_device_unregister(&omapdss_device);
1846         fbdev->dssdev = NULL;
1847
1848         return 0;
1849 }
1850
1851 /* PM suspend */
1852 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1853 {
1854         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1855
1856         if (fbdev != NULL)
1857                 omapfb_blank(FB_BLANK_POWERDOWN, fbdev->fb_info[0]);
1858         return 0;
1859 }
1860
1861 /* PM resume */
1862 static int omapfb_resume(struct platform_device *pdev)
1863 {
1864         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1865
1866         if (fbdev != NULL)
1867                 omapfb_blank(FB_BLANK_UNBLANK, fbdev->fb_info[0]);
1868         return 0;
1869 }
1870
1871 static struct platform_driver omapfb_driver = {
1872         .probe          = omapfb_probe,
1873         .remove         = omapfb_remove,
1874         .suspend        = omapfb_suspend,
1875         .resume         = omapfb_resume,
1876         .driver         = {
1877                 .name   = MODULE_NAME,
1878                 .owner  = THIS_MODULE,
1879         },
1880 };
1881
1882 #ifndef MODULE
1883
1884 /* Process kernel command line parameters */
1885 static int __init omapfb_setup(char *options)
1886 {
1887         char *this_opt = NULL;
1888         int r = 0;
1889
1890         pr_debug("omapfb: options %s\n", options);
1891
1892         if (!options || !*options)
1893                 return 0;
1894
1895         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1896                 if (!strncmp(this_opt, "accel", 5))
1897                         def_accel = 1;
1898                 else if (!strncmp(this_opt, "vram:", 5)) {
1899                         char *suffix;
1900                         unsigned long vram;
1901                         vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1902                         switch (suffix[0]) {
1903                         case '\0':
1904                                 break;
1905                         case 'm':
1906                         case 'M':
1907                                 vram *= 1024;
1908                                 /* Fall through */
1909                         case 'k':
1910                         case 'K':
1911                                 vram *= 1024;
1912                                 break;
1913                         default:
1914                                 pr_debug("omapfb: invalid vram suffix %c\n",
1915                                          suffix[0]);
1916                                 r = -1;
1917                         }
1918                         def_vram[def_vram_cnt++] = vram;
1919                 }
1920                 else if (!strncmp(this_opt, "vxres:", 6))
1921                         def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1922                 else if (!strncmp(this_opt, "vyres:", 6))
1923                         def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1924                 else if (!strncmp(this_opt, "rotate:", 7))
1925                         def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1926                 else if (!strncmp(this_opt, "mirror:", 7))
1927                         def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1928                 else if (!strncmp(this_opt, "manual_update", 13))
1929                         manual_update = 1;
1930                 else {
1931                         pr_debug("omapfb: invalid option\n");
1932                         r = -1;
1933                 }
1934         }
1935
1936         return r;
1937 }
1938
1939 #endif
1940
1941 /* Register both the driver and the device */
1942 static int __init omapfb_init(void)
1943 {
1944 #ifndef MODULE
1945         char *option;
1946
1947         if (fb_get_options("omapfb", &option))
1948                 return -ENODEV;
1949         omapfb_setup(option);
1950 #endif
1951         /* Register the driver with LDM */
1952         if (platform_driver_register(&omapfb_driver)) {
1953                 pr_debug("failed to register omapfb driver\n");
1954                 return -ENODEV;
1955         }
1956
1957         return 0;
1958 }
1959
1960 static void __exit omapfb_cleanup(void)
1961 {
1962         platform_driver_unregister(&omapfb_driver);
1963 }
1964
1965 module_param_named(accel, def_accel, uint, 0664);
1966 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1967 module_param_named(vxres, def_vxres, long, 0664);
1968 module_param_named(vyres, def_vyres, long, 0664);
1969 module_param_named(rotate, def_rotate, uint, 0664);
1970 module_param_named(mirror, def_mirror, uint, 0664);
1971 module_param_named(manual_update, manual_update, bool, 0664);
1972
1973 module_init(omapfb_init);
1974 module_exit(omapfb_cleanup);
1975
1976 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1977 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1978 MODULE_LICENSE("GPL");