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 static struct caps_table_struct {
  57         unsigned long flag;
  58         const char *name;
  59 } omapfb_caps_table[] = {
  60         { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" },
  61         { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" },
  62 };
  63
  64 /*
  65  * ---------------------------------------------------------------------------
  66  * LCD panel
  67  * ---------------------------------------------------------------------------
  68  */
  69 extern struct lcd_ctrl omap1_int_ctrl;
  70 extern struct lcd_ctrl omap2_int_ctrl;
  71 extern struct lcd_ctrl hwa742_ctrl;
  72
  73 static struct lcd_ctrl *ctrls[] = {
  74 #ifdef CONFIG_ARCH_OMAP1
  75         &omap1_int_ctrl,
  76 #else
  77         &omap2_int_ctrl,
  78 #endif
  79
  80 #ifdef CONFIG_FB_OMAP_LCDC_HWA742
  81         &hwa742_ctrl,
  82 #endif
  83 };
  84
  85 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
  86 #ifdef CONFIG_ARCH_OMAP1
  87 extern struct lcd_ctrl_extif omap1_ext_if;
  88 #else
  89 extern struct lcd_ctrl_extif omap2_ext_if;
  90 #endif
  91 #endif
  92
  93 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
  94 {
  95         mutex_lock(&fbdev->rqueue_mutex);
  96 }
  97
  98 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
  99 {
 100         mutex_unlock(&fbdev->rqueue_mutex);
 101 }
 102
 103 /*
 104  * ---------------------------------------------------------------------------
 105  * LCD controller and LCD DMA
 106  * ---------------------------------------------------------------------------
 107  */
 108 /* Lookup table to map elem size to elem type. */
 109 static const int dma_elem_type[] = {
 110         0,
 111         OMAP_DMA_DATA_TYPE_S8,
 112         OMAP_DMA_DATA_TYPE_S16,
 113         0,
 114         OMAP_DMA_DATA_TYPE_S32,
 115 };
 116
 117 /* Allocate resources needed for LCD controller and LCD DMA operations. Video
 118  * memory is allocated from system memory according to the virtual display
 119  * size, except if a bigger memory size is specified explicitly as a kernel
 120  * parameter.
 121  */
 122 static int ctrl_init(struct omapfb_device *fbdev)
 123 {
 124         int r;
 125         int i;
 126
 127         /* kernel/module vram parameters override boot tags/board config */
 128         if (def_vram_cnt) {
 129                 for (i = 0; i < def_vram_cnt; i++)
 130                         fbdev->mem_desc.region[i].size = def_vram[i];
 131                 fbdev->mem_desc.region_cnt = i;
 132         } else {
 133                 struct omapfb_platform_data *conf;
 134
 135                 conf = fbdev->dev->platform_data;
 136                 fbdev->mem_desc = conf->mem_desc;
 137         }
 138
 139         if (!fbdev->mem_desc.region_cnt) {
 140                 struct lcd_panel *panel = fbdev->panel;
 141                 int def_size;
 142                 int bpp = panel->bpp;
 143
 144                 /* 12 bpp is packed in 16 bits */
 145                 if (bpp == 12)
 146                         bpp = 16;
 147                 def_size = def_vxres * def_vyres * bpp / 8;
 148                 fbdev->mem_desc.region_cnt = 1;
 149                 fbdev->mem_desc.region[0].size = def_size;
 150         }
 151         r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
 152         if (r < 0) {
 153                 dev_err(fbdev->dev, "controller initialization failed (%d)\n", r);
 154                 return r;
 155         }
 156
 157 #ifdef DEBUG
 158         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
 159                 dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
 160                          i,
 161                          fbdev->mem_desc.region[i].paddr,
 162                          fbdev->mem_desc.region[i].vaddr,
 163                          fbdev->mem_desc.region[i].size);
 164         }
 165 #endif
 166         return 0;
 167 }
 168
 169 static void ctrl_cleanup(struct omapfb_device *fbdev)
 170 {
 171         fbdev->ctrl->cleanup();
 172 }
 173
 174 static int ctrl_change_mode(struct fb_info *fbi)
 175 {
 176         int r;
 177         unsigned long offset;
 178         struct omapfb_plane_struct *plane = fbi->par;
 179         struct omapfb_device *fbdev = plane->fbdev;
 180         struct fb_var_screeninfo *var = &fbi->var;
 181
 182         offset = var->yoffset * fbi->fix.line_length +
 183                  var->xoffset * var->bits_per_pixel / 8;
 184
 185         omapfb_rqueue_lock(fbdev);
 186         r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
 187                                  offset, var->xres_virtual,
 188                                  plane->info.pos_x, plane->info.pos_y,
 189                                  var->xres, var->yres, plane->color_mode);
 190         if (fbdev->ctrl->set_scale != NULL)
 191                 r = fbdev->ctrl->set_scale(plane->idx,
 192                                    var->xres, var->yres,
 193                                    plane->info.out_width,
 194                                    plane->info.out_height);
 195         omapfb_rqueue_unlock(fbdev);
 196
 197         return r;
 198 }
 199
 200 /*
 201  * ---------------------------------------------------------------------------
 202  * fbdev framework callbacks and the ioctl interface
 203  * ---------------------------------------------------------------------------
 204  */
 205 /* Called each time the omapfb device is opened */
 206 static int omapfb_open(struct fb_info *info, int user)
 207 {
 208         return 0;
 209 }
 210
 211 static void omapfb_sync(struct fb_info *info);
 212
 213 /* Called when the omapfb device is closed. We make sure that any pending
 214  * gfx DMA operations are ended, before we return. */
 215 static int omapfb_release(struct fb_info *info, int user)
 216 {
 217         omapfb_sync(info);
 218         return 0;
 219 }
 220
 221 /* Store a single color palette entry into a pseudo palette or the hardware
 222  * palette if one is available. For now we support only 16bpp and thus store
 223  * the entry only to the pseudo palette.
 224  */
 225 static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
 226                         u_int blue, u_int transp, int update_hw_pal)
 227 {
 228         struct omapfb_plane_struct *plane = info->par;
 229         struct omapfb_device *fbdev = plane->fbdev;
 230         struct fb_var_screeninfo *var = &info->var;
 231         int r = 0;
 232
 233         switch (plane->color_mode) {
 234         case OMAPFB_COLOR_YUV422:
 235         case OMAPFB_COLOR_YUV420:
 236         case OMAPFB_COLOR_YUY422:
 237                 r = -EINVAL;
 238                 break;
 239         case OMAPFB_COLOR_CLUT_8BPP:
 240         case OMAPFB_COLOR_CLUT_4BPP:
 241         case OMAPFB_COLOR_CLUT_2BPP:
 242         case OMAPFB_COLOR_CLUT_1BPP:
 243                 if (fbdev->ctrl->setcolreg)
 244                         r = fbdev->ctrl->setcolreg(regno, red, green, blue,
 245                                                         transp, update_hw_pal);
 246                 /* Fallthrough */
 247         case OMAPFB_COLOR_RGB565:
 248         case OMAPFB_COLOR_RGB444:
 249                 if (r != 0)
 250                         break;
 251
 252                 if (regno < 0) {
 253                         r = -EINVAL;
 254                         break;
 255                 }
 256
 257                 if (regno < 16) {
 258                         u16 pal;
 259                         pal = ((red >> (16 - var->red.length)) <<
 260                                         var->red.offset) |
 261                               ((green >> (16 - var->green.length)) <<
 262                                         var->green.offset) |
 263                               (blue >> (16 - var->blue.length));
 264                         ((u32 *)(info->pseudo_palette))[regno] = pal;
 265                 }
 266                 break;
 267         default:
 268                 BUG();
 269         }
 270         return r;
 271 }
 272
 273 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 274                             u_int transp, struct fb_info *info)
 275 {
 276         return _setcolreg(info, regno, red, green, blue, transp, 1);
 277 }
 278
 279 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
 280 {
 281         int count, index, r;
 282         u16 *red, *green, *blue, *transp;
 283         u16 trans = 0xffff;
 284
 285         red     = cmap->red;
 286         green   = cmap->green;
 287         blue    = cmap->blue;
 288         transp  = cmap->transp;
 289         index   = cmap->start;
 290
 291         for (count = 0; count < cmap->len; count++) {
 292                 if (transp)
 293                         trans = *transp++;
 294                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
 295                                 count == cmap->len - 1);
 296                 if (r != 0)
 297                         return r;
 298         }
 299
 300         return 0;
 301 }
 302
 303 static int omapfb_update_full_screen(struct fb_info *fbi);
 304
 305 static int omapfb_blank(int blank, struct fb_info *fbi)
 306 {
 307         struct omapfb_plane_struct *plane = fbi->par;
 308         struct omapfb_device *fbdev = plane->fbdev;
 309         int do_update = 0;
 310         int r = 0;
 311
 312         omapfb_rqueue_lock(fbdev);
 313         switch (blank) {
 314         case VESA_NO_BLANKING:
 315                 if (fbdev->state == OMAPFB_SUSPENDED) {
 316                         if (fbdev->ctrl->resume)
 317                                 fbdev->ctrl->resume();
 318                         fbdev->panel->enable(fbdev->panel);
 319                         fbdev->state = OMAPFB_ACTIVE;
 320                         if (fbdev->ctrl->get_update_mode() ==
 321                                         OMAPFB_MANUAL_UPDATE)
 322                                 do_update = 1;
 323                 }
 324                 break;
 325         case VESA_POWERDOWN:
 326                 if (fbdev->state == OMAPFB_ACTIVE) {
 327                         fbdev->panel->disable(fbdev->panel);
 328                         if (fbdev->ctrl->suspend)
 329                                 fbdev->ctrl->suspend();
 330                         fbdev->state = OMAPFB_SUSPENDED;
 331                 }
 332                 break;
 333         default:
 334                 r = -EINVAL;
 335         }
 336         omapfb_rqueue_unlock(fbdev);
 337
 338         if (r == 0 && do_update)
 339                 r = omapfb_update_full_screen(fbi);
 340
 341         return r;
 342 }
 343
 344 static void omapfb_sync(struct fb_info *fbi)
 345 {
 346         struct omapfb_plane_struct *plane = fbi->par;
 347         struct omapfb_device *fbdev = plane->fbdev;
 348
 349         omapfb_rqueue_lock(fbdev);
 350         if (fbdev->ctrl->sync)
 351                 fbdev->ctrl->sync();
 352         omapfb_rqueue_unlock(fbdev);
 353 }
 354
 355 /* Set fb_info.fix fields and also updates fbdev.
 356  * When calling this fb_info.var must be set up already.
 357  */
 358 static void set_fb_fix(struct fb_info *fbi)
 359 {
 360         struct fb_fix_screeninfo *fix = &fbi->fix;
 361         struct fb_var_screeninfo *var = &fbi->var;
 362         int bpp;
 363
 364         fix->type = FB_TYPE_PACKED_PIXELS;
 365         bpp = var->bits_per_pixel;
 366         if (var->nonstd)
 367                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 368         else switch (var->bits_per_pixel) {
 369         case 16:
 370         case 12:
 371                 fix->visual = FB_VISUAL_TRUECOLOR;
 372                 /* 12bpp is stored in 16 bits */
 373                 bpp = 16;
 374                 break;
 375         case 1:
 376         case 2:
 377         case 4:
 378         case 8:
 379                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 380                 break;
 381         }
 382         fix->accel              = FB_ACCEL_OMAP1610;
 383         fix->line_length        = var->xres_virtual * bpp / 8;
 384 }
 385
 386 static int set_color_mode(struct omapfb_plane_struct *plane,
 387                           struct fb_var_screeninfo *var)
 388 {
 389         switch (var->nonstd) {
 390         case 0:
 391                 break;
 392         case OMAPFB_COLOR_YUV422:
 393                 var->bits_per_pixel = 16;
 394                 plane->color_mode = var->nonstd;
 395                 return 0;
 396         case OMAPFB_COLOR_YUV420:
 397                 var->bits_per_pixel = 12;
 398                 plane->color_mode = var->nonstd;
 399                 return 0;
 400         case OMAPFB_COLOR_YUY422:
 401                 var->bits_per_pixel = 16;
 402                 plane->color_mode = var->nonstd;
 403                 return 0;
 404         default:
 405                 return -EINVAL;
 406         }
 407
 408         switch (var->bits_per_pixel) {
 409         case 1:
 410                 plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
 411                 return 0;
 412         case 2:
 413                 plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
 414                 return 0;
 415         case 4:
 416                 plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
 417                 return 0;
 418         case 8:
 419                 plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
 420                 return 0;
 421         case 12:
 422                 var->bits_per_pixel = 16;
 423                 plane->color_mode = OMAPFB_COLOR_RGB444;
 424                 return 0;
 425         case 16:
 426                 plane->color_mode = OMAPFB_COLOR_RGB565;
 427                 return 0;
 428         default:
 429                 return -EINVAL;
 430         }
 431 }
 432
 433 /* Check the values in var against our capabilities and in case of out of
 434  * bound values try to adjust them.
 435  */
 436 static int set_fb_var(struct fb_info *fbi,
 437                       struct fb_var_screeninfo *var)
 438 {
 439         int             bpp;
 440         unsigned long   max_frame_size;
 441         unsigned long   line_size;
 442         int             xres_min, xres_max;
 443         int             yres_min, yres_max;
 444         struct omapfb_plane_struct *plane = fbi->par;
 445         struct omapfb_device *fbdev = plane->fbdev;
 446         struct lcd_panel *panel = fbdev->panel;
 447
 448         if (set_color_mode(plane, var) < 0)
 449                 return -EINVAL;
 450
 451         bpp = var->bits_per_pixel;
 452         if (plane->color_mode == OMAPFB_COLOR_RGB444)
 453                 bpp = 16;
 454
 455         switch (var->rotate) {
 456         case 0:
 457         case 180:
 458                 xres_min = OMAPFB_PLANE_XRES_MIN;
 459                 xres_max = panel->x_res;
 460                 yres_min = OMAPFB_PLANE_YRES_MIN;
 461                 yres_max = panel->y_res;
 462                 if (cpu_is_omap15xx()) {
 463                         var->xres = panel->x_res;
 464                         var->yres = panel->y_res;
 465                 }
 466                 break;
 467         case 90:
 468         case 270:
 469                 xres_min = OMAPFB_PLANE_YRES_MIN;
 470                 xres_max = panel->y_res;
 471                 yres_min = OMAPFB_PLANE_XRES_MIN;
 472                 yres_max = panel->x_res;
 473                 if (cpu_is_omap15xx()) {
 474                         var->xres = panel->y_res;
 475                         var->yres = panel->x_res;
 476                 }
 477                 break;
 478         default:
 479                 return -EINVAL;
 480         }
 481
 482         if (var->xres < xres_min)
 483                 var->xres = xres_min;
 484         if (var->yres < yres_min)
 485                 var->yres = yres_min;
 486         if (var->xres > xres_max)
 487                 var->xres = xres_max;
 488         if (var->yres > yres_max)
 489                 var->yres = yres_max;
 490
 491         if (var->xres_virtual < var->xres)
 492                 var->xres_virtual = var->xres;
 493         if (var->yres_virtual < var->yres)
 494                 var->yres_virtual = var->yres;
 495         max_frame_size = fbdev->mem_desc.region[plane->idx].size;
 496         line_size = var->xres_virtual * bpp / 8;
 497         if (line_size * var->yres_virtual > max_frame_size) {
 498                 /* Try to keep yres_virtual first */
 499                 line_size = max_frame_size / var->yres_virtual;
 500                 var->xres_virtual = line_size * 8 / bpp;
 501                 if (var->xres_virtual < var->xres) {
 502                         /* Still doesn't fit. Shrink yres_virtual too */
 503                         var->xres_virtual = var->xres;
 504                         line_size = var->xres * bpp / 8;
 505                         var->yres_virtual = max_frame_size / line_size;
 506                 }
 507         }
 508         if (var->xres + var->xoffset > var->xres_virtual)
 509                 var->xoffset = var->xres_virtual - var->xres;
 510         if (var->yres + var->yoffset > var->yres_virtual)
 511                 var->yoffset = var->yres_virtual - var->yres;
 512         line_size = var->xres * bpp / 8;
 513
 514         if (plane->color_mode == OMAPFB_COLOR_RGB444) {
 515                 var->red.offset   = 8; var->red.length   = 4;
 516                                                 var->red.msb_right   = 0;
 517                 var->green.offset = 4; var->green.length = 4;
 518                                                 var->green.msb_right = 0;
 519                 var->blue.offset  = 0; var->blue.length  = 4;
 520                                                 var->blue.msb_right  = 0;
 521         } else {
 522                 var->red.offset  = 11; var->red.length   = 5;
 523                                                 var->red.msb_right   = 0;
 524                 var->green.offset= 5;  var->green.length = 6;
 525                                                 var->green.msb_right = 0;
 526                 var->blue.offset = 0;  var->blue.length  = 5;
 527                                                 var->blue.msb_right  = 0;
 528         }
 529
 530         var->height             = -1;
 531         var->width              = -1;
 532         var->grayscale          = 0;
 533
 534         /* pixclock in ps, the rest in pixclock */
 535         var->pixclock           = 10000000 / (panel->pixel_clock / 100);
 536         var->left_margin        = panel->hfp;
 537         var->right_margin       = panel->hbp;
 538         var->upper_margin       = panel->vfp;
 539         var->lower_margin       = panel->vbp;
 540         var->hsync_len          = panel->hsw;
 541         var->vsync_len          = panel->vsw;
 542
 543         /* TODO: get these from panel->config */
 544         var->vmode              = FB_VMODE_NONINTERLACED;
 545         var->sync               = 0;
 546
 547         return 0;
 548 }
 549
 550 static struct fb_var_screeninfo new_var;
 551
 552 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
 553 static void omapfb_rotate(struct fb_info *fbi, int rotate)
 554 {
 555         if (cpu_is_omap15xx() && rotate != fbi->var.rotate) {
 556                 memcpy(&new_var, &fbi->var, sizeof(new_var));
 557                 new_var.rotate = rotate;
 558                 if (set_fb_var(fbi, &new_var) == 0 &&
 559                     memcmp(&new_var, &fbi->var, sizeof(new_var))) {
 560                         memcpy(&fbi->var, &new_var, sizeof(new_var));
 561                         ctrl_change_mode(fbi);
 562                 }
 563         }
 564 }
 565
 566 /* Set new x,y offsets in the virtual display for the visible area and switch
 567  * to the new mode.
 568  */
 569 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 570                                struct fb_info *fbi)
 571 {
 572         int r = 0;
 573
 574         if (var->xoffset != fbi->var.xoffset ||
 575             var->yoffset != fbi->var.yoffset) {
 576                 memcpy(&new_var, &fbi->var, sizeof(new_var));
 577                 new_var.xoffset = var->xoffset;
 578                 new_var.yoffset = var->yoffset;
 579                 if (set_fb_var(fbi, &new_var))
 580                         r = -EINVAL;
 581                 else {
 582                         memcpy(&fbi->var, &new_var, sizeof(new_var));
 583                         ctrl_change_mode(fbi);
 584                 }
 585         }
 586
 587         return r;
 588 }
 589
 590 /* Set mirror to vertical axis and switch to the new mode. */
 591 static int omapfb_mirror(struct fb_info *fbi, int mirror)
 592 {
 593         struct omapfb_plane_struct *plane = fbi->par;
 594         int r = 0;
 595
 596         mirror = mirror ? 1 : 0;
 597         if (cpu_is_omap15xx())
 598                 r = -EINVAL;
 599         else if (mirror != plane->info.mirror) {
 600                 plane->info.mirror = mirror;
 601                 r = ctrl_change_mode(fbi);
 602         }
 603
 604         return r;
 605 }
 606
 607 /* Check values in var, try to adjust them in case of out of bound values if
 608  * possible, or return error.
 609  */
 610 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 611 {
 612         return set_fb_var(fbi, var);
 613 }
 614
 615 /* Switch to a new mode. The parameters for it has been check already by
 616  * omapfb_check_var.
 617  */
 618 static int omapfb_set_par(struct fb_info *fbi)
 619 {
 620         set_fb_fix(fbi);
 621         return ctrl_change_mode(fbi);
 622 }
 623
 624 int omapfb_update_window_async(struct fb_info *fbi,
 625                                 struct omapfb_update_window *win,
 626                                 void (*callback)(void *),
 627                                 void *callback_data)
 628 {
 629         struct omapfb_plane_struct *plane;
 630         struct omapfb_device *fbdev;
 631         struct fb_var_screeninfo *var;
 632
 633         if (!fbi)
 634                 return -EINVAL;
 635
 636         plane = fbi->par;
 637         fbdev = plane->fbdev;
 638         var = &fbi->var;
 639
 640         if (win->x >= var->xres || win->y >= var->yres)
 641                 return -EINVAL;
 642
 643         if (!fbdev->ctrl->update_window ||
 644             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 645                 return -ENODEV;
 646
 647         if (win->x + win->width >= var->xres)
 648                 win->width = var->xres - win->x;
 649         if (win->y + win->height >= var->yres)
 650                 win->height = var->yres - win->y;
 651         if (!win->width || !win->height)
 652                 return 0;
 653
 654         return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
 655 }
 656 EXPORT_SYMBOL(omapfb_update_window_async);
 657
 658 static int omapfb_update_win(struct fb_info *fbi,
 659                                 struct omapfb_update_window *win)
 660 {
 661         struct omapfb_plane_struct *plane = fbi->par;
 662         int ret;
 663
 664         omapfb_rqueue_lock(plane->fbdev);
 665         ret = omapfb_update_window_async(fbi, win, NULL, 0);
 666         omapfb_rqueue_unlock(plane->fbdev);
 667
 668         return ret;
 669 }
 670
 671 static int omapfb_update_full_screen(struct fb_info *fbi)
 672 {
 673         struct omapfb_plane_struct *plane = fbi->par;
 674         struct omapfb_device *fbdev = plane->fbdev;
 675         struct omapfb_update_window win;
 676         int r;
 677
 678         if (!fbdev->ctrl->update_window ||
 679             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 680                 return -ENODEV;
 681
 682         win.x = 0;
 683         win.y = 0;
 684         win.width = fbi->var.xres;
 685         win.height = fbi->var.yres;
 686         win.format = 0;
 687
 688         omapfb_rqueue_lock(fbdev);
 689         r = fbdev->ctrl->update_window(fbi, &win, NULL, 0);
 690         omapfb_rqueue_unlock(fbdev);
 691
 692         return r;
 693 }
 694
 695 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 696 {
 697         struct omapfb_plane_struct *plane = fbi->par;
 698         struct omapfb_device *fbdev = plane->fbdev;
 699         struct lcd_panel *panel = fbdev->panel;
 700         int r;
 701
 702         if (pi->pos_x + pi->out_width > panel->x_res ||
 703             pi->pos_y + pi->out_height > panel->y_res)
 704                 return -EINVAL;
 705
 706         plane->info = *pi;
 707         r = ctrl_change_mode(fbi);
 708         if (r < 0)
 709                 return r;
 710         return fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
 711 }
 712
 713 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 714 {
 715         struct omapfb_plane_struct *plane = fbi->par;
 716
 717         *pi = plane->info;
 718         return 0;
 719 }
 720
 721 static int omapfb_set_color_key(struct omapfb_device *fbdev,
 722                                 struct omapfb_color_key *ck)
 723 {
 724         int r;
 725
 726         if (!fbdev->ctrl->set_color_key)
 727                 return -ENODEV;
 728
 729         omapfb_rqueue_lock(fbdev);
 730         r = fbdev->ctrl->set_color_key(ck);
 731         omapfb_rqueue_unlock(fbdev);
 732
 733         return r;
 734 }
 735
 736 static int omapfb_get_color_key(struct omapfb_device *fbdev,
 737                                 struct omapfb_color_key *ck)
 738 {
 739         int r;
 740
 741         if (!fbdev->ctrl->get_color_key)
 742                 return -ENODEV;
 743
 744         omapfb_rqueue_lock(fbdev);
 745         r = fbdev->ctrl->get_color_key(ck);
 746         omapfb_rqueue_unlock(fbdev);
 747
 748         return r;
 749 }
 750
 751 static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
 752 static int notifier_inited;
 753
 754 static void omapfb_init_notifier(void)
 755 {
 756         int i;
 757
 758         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
 759                 BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
 760 }
 761
 762 int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
 763                            omapfb_notifier_callback_t callback,
 764                            void *callback_data)
 765 {
 766         int r;
 767
 768         if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
 769                 return -EINVAL;
 770
 771         if (!notifier_inited) {
 772                 omapfb_init_notifier();
 773                 notifier_inited = 1;
 774         }
 775
 776         omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
 777                                         unsigned long, void *))callback;
 778         omapfb_nb->data = callback_data;
 779         r = blocking_notifier_chain_register(
 780                                 &omapfb_client_list[omapfb_nb->plane_idx],
 781                                 &omapfb_nb->nb);
 782         if (r)
 783                 return r;
 784         if (omapfb_dev != NULL &&
 785             omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
 786                 omapfb_dev->ctrl->bind_client(omapfb_nb);
 787         }
 788
 789         return 0;
 790 }
 791 EXPORT_SYMBOL(omapfb_register_client);
 792
 793 int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
 794 {
 795         return blocking_notifier_chain_unregister(
 796                 &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
 797 }
 798 EXPORT_SYMBOL(omapfb_unregister_client);
 799
 800 void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
 801 {
 802         int i;
 803
 804         if (!notifier_inited)
 805                 /* no client registered yet */
 806                 return;
 807
 808         for (i = 0; i < OMAPFB_PLANE_NUM; i++)
 809                 blocking_notifier_call_chain(&omapfb_client_list[i], event,
 810                                     fbdev->fb_info[i]);
 811 }
 812 EXPORT_SYMBOL(omapfb_notify_clients);
 813
 814 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
 815                                    enum omapfb_update_mode mode)
 816 {
 817         int r;
 818
 819         omapfb_rqueue_lock(fbdev);
 820         r = fbdev->ctrl->set_update_mode(mode);
 821         omapfb_rqueue_unlock(fbdev);
 822
 823         return r;
 824 }
 825
 826 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
 827 {
 828         int r;
 829
 830         omapfb_rqueue_lock(fbdev);
 831         r = fbdev->ctrl->get_update_mode();
 832         omapfb_rqueue_unlock(fbdev);
 833
 834         return r;
 835 }
 836
 837 static unsigned long omapfb_get_caps(struct omapfb_device *fbdev)
 838 {
 839         unsigned long caps;
 840
 841         caps = 0;
 842         caps |= fbdev->panel->get_caps(fbdev->panel);
 843         caps |= fbdev->ctrl->get_caps();
 844         return caps;
 845 }
 846
 847 /* For lcd testing */
 848 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
 849 {
 850         omapfb_rqueue_lock(fbdev);
 851         *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
 852         if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
 853                 struct omapfb_update_window win;
 854
 855                 win.x = 0;
 856                 win.y = 0;
 857                 win.width = 1;
 858                 win.height = 1;
 859                 win.format = 0;
 860                 fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, 0);
 861         }
 862         omapfb_rqueue_unlock(fbdev);
 863 }
 864 EXPORT_SYMBOL(omapfb_write_first_pixel);
 865
 866 /* Ioctl interface. Part of the kernel mode frame buffer API is duplicated
 867  * here to be accessible by user mode code.
 868  */
 869 static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
 870                         unsigned long arg)
 871 {
 872         struct omapfb_plane_struct *plane = fbi->par;
 873         struct omapfb_device    *fbdev = plane->fbdev;
 874         struct fb_ops           *ops = fbi->fbops;
 875         union {
 876                 struct omapfb_update_window     update_window;
 877                 struct omapfb_plane_info        plane_info;
 878                 struct omapfb_color_key         color_key;
 879                 enum omapfb_update_mode         update_mode;
 880                 unsigned long           caps;
 881                 unsigned int            mirror;
 882                 int                     plane_out;
 883                 int                     enable_plane;
 884         } p;
 885         int r = 0;
 886
 887         BUG_ON(!ops);
 888         switch (cmd)
 889         {
 890         case OMAPFB_MIRROR:
 891                 if (get_user(p.mirror, (int __user *)arg))
 892                         r = -EFAULT;
 893                 else
 894                         omapfb_mirror(fbi, p.mirror);
 895                 break;
 896         case OMAPFB_SYNC_GFX:
 897                 omapfb_sync(fbi);
 898                 break;
 899         case OMAPFB_VSYNC:
 900                 break;
 901         case OMAPFB_SET_UPDATE_MODE:
 902                 if (get_user(p.update_mode, (int __user *)arg))
 903                         r = -EFAULT;
 904                 else
 905                         r = omapfb_set_update_mode(fbdev, p.update_mode);
 906                 break;
 907         case OMAPFB_GET_UPDATE_MODE:
 908                 p.update_mode = omapfb_get_update_mode(fbdev);
 909                 if (put_user(p.update_mode,
 910                                         (enum omapfb_update_mode __user *)arg))
 911                         r = -EFAULT;
 912                 break;
 913         case OMAPFB_UPDATE_WINDOW_OLD:
 914                 if (copy_from_user(&p.update_window, (void __user *)arg,
 915                                    sizeof(struct omapfb_update_window_old)))
 916                         r = -EFAULT;
 917                 else {
 918                         p.update_window.format = 0;
 919                         r = omapfb_update_win(fbi, &p.update_window);
 920                 }
 921                 break;
 922         case OMAPFB_UPDATE_WINDOW:
 923                 if (copy_from_user(&p.update_window, (void __user *)arg,
 924                                    sizeof(p.update_window)))
 925                         r = -EFAULT;
 926                 else
 927                         r = omapfb_update_win(fbi, &p.update_window);
 928                 break;
 929         case OMAPFB_SETUP_PLANE:
 930                 if (copy_from_user(&p.plane_info, (void __user *)arg,
 931                                    sizeof(p.plane_info)))
 932                         r = -EFAULT;
 933                 else
 934                         r = omapfb_setup_plane(fbi, &p.plane_info);
 935                 break;
 936         case OMAPFB_QUERY_PLANE:
 937                 if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
 938                         break;
 939                 if (copy_to_user((void __user *)arg, &p.plane_info,
 940                                    sizeof(p.plane_info)))
 941                         r = -EFAULT;
 942                 break;
 943         case OMAPFB_SET_COLOR_KEY:
 944                 if (copy_from_user(&p.color_key, (void __user *)arg,
 945                                    sizeof(p.color_key)))
 946                         r = -EFAULT;
 947                 else
 948                         r = omapfb_set_color_key(fbdev, &p.color_key);
 949                 break;
 950         case OMAPFB_GET_COLOR_KEY:
 951                 if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
 952                         break;
 953                 if (copy_to_user((void __user *)arg, &p.color_key,
 954                                  sizeof(p.color_key)))
 955                         r = -EFAULT;
 956                 break;
 957         case OMAPFB_LCD_TEST:
 958                 {
 959                         int test_num;
 960
 961                         if (get_user(test_num, (int __user *)arg)) {
 962                                 r = -EFAULT;
 963                                 break;
 964                         }
 965                         if (!fbdev->panel->run_test) {
 966                                 r = -EINVAL;
 967                                 break;
 968                         }
 969                         r = fbdev->panel->run_test(fbdev->panel, test_num);
 970                         break;
 971                 }
 972         case OMAPFB_CTRL_TEST:
 973                 {
 974                         int test_num;
 975
 976                         if (get_user(test_num, (int __user *)arg)) {
 977                                 r = -EFAULT;
 978                                 break;
 979                         }
 980                         if (!fbdev->ctrl->run_test) {
 981                                 r = -EINVAL;
 982                                 break;
 983                         }
 984                         r = fbdev->ctrl->run_test(test_num);
 985                         break;
 986                 }
 987         default:
 988                 r = -EINVAL;
 989         }
 990
 991         return r;
 992 }
 993
 994 /* Callback table for the frame buffer framework. Some of these pointers
 995  * will be changed according to the current setting of fb_info->accel_flags.
 996  */
 997 static struct fb_ops omapfb_ops = {
 998         .owner          = THIS_MODULE,
 999         .fb_open        = omapfb_open,
1000         .fb_release     = omapfb_release,
1001         .fb_setcolreg   = omapfb_setcolreg,
1002         .fb_setcmap     = omapfb_setcmap,
1003         .fb_fillrect    = cfb_fillrect,
1004         .fb_copyarea    = cfb_copyarea,
1005         .fb_imageblit   = cfb_imageblit,
1006         .fb_blank       = omapfb_blank,
1007         .fb_ioctl       = omapfb_ioctl,
1008         .fb_check_var   = omapfb_check_var,
1009         .fb_set_par     = omapfb_set_par,
1010         .fb_rotate      = omapfb_rotate,
1011         .fb_pan_display = omapfb_pan_display,
1012 };
1013
1014 /*
1015  * ---------------------------------------------------------------------------
1016  * Sysfs interface
1017  * ---------------------------------------------------------------------------
1018  */
1019 /* omapfbX sysfs entries */
1020 static ssize_t omapfb_show_caps_num(struct device *dev, struct device_attribute *attr, char *buf)
1021 {
1022         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1023
1024         return snprintf(buf, PAGE_SIZE, "%#010lx\n", omapfb_get_caps(fbdev));
1025 }
1026
1027 static ssize_t omapfb_show_caps_text(struct device *dev, struct device_attribute *attr, char *buf)
1028 {
1029         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1030         int pos = 0;
1031         int i;
1032         unsigned long caps;
1033
1034         caps = omapfb_get_caps(fbdev);
1035         for (i = 0; i < ARRAY_SIZE(omapfb_caps_table) && pos < PAGE_SIZE; i++) {
1036                 if (omapfb_caps_table[i].flag & caps) {
1037                         pos += snprintf(&buf[pos], PAGE_SIZE - pos, "%s\n",
1038                                         omapfb_caps_table[i].name);
1039                 }
1040         }
1041         return min((int)PAGE_SIZE, pos);
1042 }
1043
1044 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
1045 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
1046
1047 /* panel sysfs entries */
1048 static ssize_t omapfb_show_panel_name(struct device *dev,
1049                                       struct device_attribute *attr, char *buf)
1050 {
1051         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1052
1053         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
1054 }
1055
1056 static ssize_t omapfb_show_bklight_level(struct device *dev,
1057                                          struct device_attribute *attr,
1058                                          char *buf)
1059 {
1060         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1061         int r;
1062
1063         if (fbdev->panel->get_bklight_level) {
1064                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1065                              fbdev->panel->get_bklight_level(fbdev->panel));
1066         } else
1067                 r = -ENODEV;
1068         return r;
1069 }
1070
1071 static ssize_t omapfb_store_bklight_level(struct device *dev,
1072                                           struct device_attribute *attr,
1073                                           const char *buf, size_t size)
1074 {
1075         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1076         int r;
1077
1078         if (fbdev->panel->set_bklight_level) {
1079                 unsigned int level;
1080
1081                 if (sscanf(buf, "%10d", &level) == 1) {
1082                         r = fbdev->panel->set_bklight_level(fbdev->panel, level);
1083                 } else
1084                         r = -EINVAL;
1085         } else
1086                 r = -ENODEV;
1087         return r ? r : size;
1088 }
1089
1090 static ssize_t omapfb_show_bklight_max(struct device *dev,
1091                                        struct device_attribute *attr, char *buf)
1092 {
1093         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1094         int r;
1095
1096         if (fbdev->panel->get_bklight_level) {
1097                 r = snprintf(buf, PAGE_SIZE, "%d\n",
1098                              fbdev->panel->get_bklight_max(fbdev->panel));
1099         } else
1100                 r = -ENODEV;
1101         return r;
1102 }
1103
1104 static struct device_attribute dev_attr_panel_name =
1105         __ATTR(name, 0444, omapfb_show_panel_name, NULL);
1106 static DEVICE_ATTR(backlight_level, 0664,
1107                    omapfb_show_bklight_level, omapfb_store_bklight_level);
1108 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
1109
1110 static struct attribute *panel_attrs[] = {
1111         &dev_attr_panel_name.attr,
1112         &dev_attr_backlight_level.attr,
1113         &dev_attr_backlight_max.attr,
1114         NULL,
1115 };
1116
1117 static struct attribute_group panel_attr_grp = {
1118         .name  = "panel",
1119         .attrs = panel_attrs,
1120 };
1121
1122 /* ctrl sysfs entries */
1123 static ssize_t omapfb_show_ctrl_name(struct device *dev,
1124                                      struct device_attribute *attr, char *buf)
1125 {
1126         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
1127
1128         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1129 }
1130
1131 static struct device_attribute dev_attr_ctrl_name =
1132         __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1133
1134 static struct attribute *ctrl_attrs[] = {
1135         &dev_attr_ctrl_name.attr,
1136         NULL,
1137 };
1138
1139 static struct attribute_group ctrl_attr_grp = {
1140         .name  = "ctrl",
1141         .attrs = ctrl_attrs,
1142 };
1143
1144 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1145 {
1146         int r;
1147
1148         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1149                 goto fail0;
1150
1151         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1152                 goto fail1;
1153
1154         if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1155                 goto fail2;
1156
1157         if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1158                 goto fail3;
1159
1160         return 0;
1161 fail3:
1162         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1163 fail2:
1164         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1165 fail1:
1166         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1167 fail0:
1168         dev_err(fbdev->dev, "unable to register sysfs interface\n");
1169         return r;
1170 }
1171
1172 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1173 {
1174         sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1175         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1176         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1177         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1178 }
1179
1180 /*
1181  * ---------------------------------------------------------------------------
1182  * LDM callbacks
1183  * ---------------------------------------------------------------------------
1184  */
1185 /* Initialize system fb_info object and set the default video mode.
1186  * The frame buffer memory already allocated by lcddma_init
1187  */
1188 static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info,
1189                         struct omapfb_mem_region *region)
1190 {
1191         struct fb_var_screeninfo        *var = &info->var;
1192         struct fb_fix_screeninfo        *fix = &info->fix;
1193         int                             r = 0;
1194
1195         info->fbops = &omapfb_ops;
1196         info->flags = FBINFO_FLAG_DEFAULT;
1197
1198         strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1199
1200         info->screen_base       = (char __iomem *)region->vaddr;
1201         fix->smem_start         = region->paddr;
1202         fix->smem_len           = region->size;
1203
1204         info->pseudo_palette = fbdev->pseudo_palette;
1205
1206         var->accel_flags  = def_accel ? FB_ACCELF_TEXT : 0;
1207         var->xres = def_vxres;
1208         var->yres = def_vyres;
1209         var->xres_virtual = def_vxres;
1210         var->yres_virtual = def_vyres;
1211         var->rotate       = def_rotate;
1212         var->bits_per_pixel = fbdev->panel->bpp;
1213
1214         set_fb_var(info, var);
1215         set_fb_fix(info);
1216
1217         r = fb_alloc_cmap(&info->cmap, 16, 0);
1218         if (r != 0)
1219                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1220
1221         return r;
1222 }
1223
1224 /* Release the fb_info object */
1225 static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
1226 {
1227         fb_dealloc_cmap(&fbi->cmap);
1228 }
1229
1230 static void planes_cleanup(struct omapfb_device *fbdev)
1231 {
1232         int i;
1233
1234         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1235                 if (fbdev->fb_info[i] == NULL)
1236                         break;
1237                 fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
1238                 framebuffer_release(fbdev->fb_info[i]);
1239         }
1240 }
1241
1242 static int planes_init(struct omapfb_device *fbdev)
1243 {
1244         struct fb_info *fbi;
1245         int i;
1246         int r;
1247
1248         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1249                 struct omapfb_plane_struct *plane;
1250                 fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
1251                                         fbdev->dev);
1252                 if (fbi == NULL) {
1253                         dev_err(fbdev->dev,
1254                                 "unable to allocate memory for plane info\n");
1255                         planes_cleanup(fbdev);
1256                         return -ENOMEM;
1257                 }
1258                 plane = fbi->par;
1259                 plane->idx = i;
1260                 plane->fbdev = fbdev;
1261                 plane->info.mirror = def_mirror;
1262                 fbdev->fb_info[i] = fbi;
1263
1264                 if ((r = fbinfo_init(fbdev, fbi,
1265                                         &fbdev->mem_desc.region[i])) < 0) {
1266                         framebuffer_release(fbi);
1267                         planes_cleanup(fbdev);
1268                         return r;
1269                 }
1270                 plane->info.out_width = fbi->var.xres;
1271                 plane->info.out_height = fbi->var.yres;
1272         }
1273         return 0;
1274 }
1275
1276 /* Free driver resources. Can be called to rollback an aborted initialization
1277  * sequence.
1278  */
1279 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1280 {
1281         int i;
1282
1283         switch (state) {
1284         case OMAPFB_ACTIVE:
1285                 for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
1286                         unregister_framebuffer(fbdev->fb_info[i]);
1287         case 7:
1288                 omapfb_unregister_sysfs(fbdev);
1289         case 6:
1290                 fbdev->panel->disable(fbdev->panel);
1291         case 5:
1292                 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1293         case 4:
1294                 planes_cleanup(fbdev);
1295         case 3:
1296                 ctrl_cleanup(fbdev);
1297         case 2:
1298                 fbdev->panel->cleanup(fbdev->panel);
1299         case 1:
1300                 dev_set_drvdata(fbdev->dev, NULL);
1301                 kfree(fbdev);
1302         case 0:
1303                 /* nothing to free */
1304                 break;
1305         default:
1306                 BUG();
1307         }
1308 }
1309
1310 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1311 {
1312         struct omapfb_platform_data *conf;
1313         char name[17];
1314         int i;
1315
1316         conf = fbdev->dev->platform_data;
1317
1318         fbdev->ctrl = NULL;
1319
1320         strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
1321         name[sizeof(name) - 1] = '\0';
1322
1323         if (strcmp(name, "internal") == 0) {
1324                 fbdev->ctrl = fbdev->int_ctrl;
1325                 return 0;
1326         }
1327
1328         for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1329                 dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
1330                 if (strcmp(ctrls[i]->name, name) == 0) {
1331                         fbdev->ctrl = ctrls[i];
1332                         break;
1333                 }
1334         }
1335
1336         if (fbdev->ctrl == NULL) {
1337                 dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
1338                 return -1;
1339         }
1340
1341         return 0;
1342 }
1343
1344 static void check_required_callbacks(struct omapfb_device *fbdev)
1345 {
1346 #define _C(x) (fbdev->ctrl->x != NULL)
1347 #define _P(x) (fbdev->panel->x != NULL)
1348         BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1349         BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1350                  _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1351                  _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1352                  _P(get_caps)));
1353 #undef _P
1354 #undef _C
1355 }
1356
1357 /* Called by LDM binding to probe and attach a new device.
1358  * Initialization sequence:
1359  *   1. allocate system omapfb_device structure
1360  *   2. select controller type according to platform configuration
1361  *      init LCD panel
1362  *   3. init LCD controller and LCD DMA
1363  *   4. init system fb_info structure for all planes
1364  *   5. setup video mode for first plane and enable it
1365  *   6. enable LCD panel
1366  *   7. register sysfs attributes
1367  *   OMAPFB_ACTIVE: register system fb_info structure for all planes
1368  */
1369 static int omapfb_do_probe(struct platform_device *pdev, struct lcd_panel *panel)
1370 {
1371         struct omapfb_device    *fbdev = NULL;
1372         int                     init_state;
1373         unsigned long           phz, hhz, vhz;
1374         unsigned long           vram;
1375         int                     i;
1376         int                     r = 0;
1377
1378         init_state = 0;
1379
1380         if (pdev->num_resources != 0) {
1381                 dev_err(&pdev->dev, "probed for an unknown device\n");
1382                 r = -ENODEV;
1383                 goto cleanup;
1384         }
1385
1386         if (pdev->dev.platform_data == NULL) {
1387                 dev_err(&pdev->dev, "missing platform data\n");
1388                 r = -ENOENT;
1389                 goto cleanup;
1390         }
1391
1392         fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
1393         if (fbdev == NULL) {
1394                 dev_err(&pdev->dev,
1395                         "unable to allocate memory for device info\n");
1396                 r = -ENOMEM;
1397                 goto cleanup;
1398         }
1399         init_state++;
1400
1401         fbdev->dev = &pdev->dev;
1402         fbdev->panel = panel;
1403         platform_set_drvdata(pdev, fbdev);
1404
1405         mutex_init(&fbdev->rqueue_mutex);
1406
1407 #ifdef CONFIG_ARCH_OMAP1
1408         fbdev->int_ctrl = &omap1_int_ctrl;
1409 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1410         fbdev->ext_if = &omap1_ext_if;
1411 #endif
1412 #else   /* OMAP2 */
1413         fbdev->int_ctrl = &omap2_int_ctrl;
1414 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1415         fbdev->ext_if = &omap2_ext_if;
1416 #endif
1417 #endif
1418         if (omapfb_find_ctrl(fbdev) < 0) {
1419                 dev_err(fbdev->dev,
1420                         "LCD controller not found, board not supported\n");
1421                 r = -ENODEV;
1422                 goto cleanup;
1423         }
1424
1425         r = fbdev->panel->init(fbdev->panel, fbdev);
1426         if (r)
1427                 goto cleanup;
1428
1429         pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
1430
1431         def_vxres = def_vxres ? : fbdev->panel->x_res;
1432         def_vyres = def_vyres ? : fbdev->panel->y_res;
1433
1434         init_state++;
1435
1436         r = ctrl_init(fbdev);
1437         if (r)
1438                 goto cleanup;
1439         init_state++;
1440
1441         check_required_callbacks(fbdev);
1442
1443         r = planes_init(fbdev);
1444         if (r)
1445                 goto cleanup;
1446         init_state++;
1447
1448 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1449         /* Set DMA priority for EMIFF access to highest */
1450         if (cpu_class_is_omap1())
1451                 omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
1452 #endif
1453
1454         r = ctrl_change_mode(fbdev->fb_info[0]);
1455         if (r) {
1456                 dev_err(fbdev->dev, "mode setting failed\n");
1457                 goto cleanup;
1458         }
1459
1460         /* GFX plane is enabled by default */
1461         r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
1462         if (r)
1463                 goto cleanup;
1464
1465         omapfb_set_update_mode(fbdev, manual_update ?
1466                                    OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1467         init_state++;
1468
1469         r = fbdev->panel->enable(fbdev->panel);
1470         if (r)
1471                 goto cleanup;
1472         init_state++;
1473
1474         r = omapfb_register_sysfs(fbdev);
1475         if (r)
1476                 goto cleanup;
1477         init_state++;
1478
1479         vram = 0;
1480         for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
1481                 r = register_framebuffer(fbdev->fb_info[i]);
1482                 if (r != 0) {
1483                         dev_err(fbdev->dev,
1484                                 "registering framebuffer %d failed\n", i);
1485                         goto cleanup;
1486                 }
1487                 vram += fbdev->mem_desc.region[i].size;
1488         }
1489
1490         fbdev->state = OMAPFB_ACTIVE;
1491
1492         panel = fbdev->panel;
1493         phz = panel->pixel_clock * 1000;
1494         hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1495         vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1496
1497         omapfb_dev = fbdev;
1498
1499         pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
1500                         vram, fbdev->mem_desc.region_cnt);
1501         pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
1502                         "vfreq %lu.%lu Hz\n",
1503                         phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1504
1505         return 0;
1506
1507 cleanup:
1508         omapfb_free_resources(fbdev, init_state);
1509
1510         return r;
1511 }
1512
1513 static int omapfb_probe(struct platform_device *pdev)
1514 {
1515         BUG_ON(fbdev_pdev != NULL);
1516
1517         /* Delay actual initialization until the LCD is registered */
1518         fbdev_pdev = pdev;
1519         if (fbdev_panel != NULL)
1520                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1521         return 0;
1522 }
1523
1524 void omapfb_register_panel(struct lcd_panel *panel)
1525 {
1526         BUG_ON(fbdev_panel != NULL);
1527
1528         fbdev_panel = panel;
1529         if (fbdev_pdev != NULL)
1530                 omapfb_do_probe(fbdev_pdev, fbdev_panel);
1531 }
1532
1533 /* Called when the device is being detached from the driver */
1534 static int omapfb_remove(struct platform_device *pdev)
1535 {
1536         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1537         enum omapfb_state saved_state = fbdev->state;
1538
1539         /* FIXME: wait till completion of pending events */
1540
1541         fbdev->state = OMAPFB_DISABLED;
1542         omapfb_free_resources(fbdev, saved_state);
1543
1544         return 0;
1545 }
1546
1547 /* PM suspend */
1548 static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
1549 {
1550         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1551
1552         omapfb_blank(VESA_POWERDOWN, fbdev->fb_info[0]);
1553
1554         return 0;
1555 }
1556
1557 /* PM resume */
1558 static int omapfb_resume(struct platform_device *pdev)
1559 {
1560         struct omapfb_device *fbdev = platform_get_drvdata(pdev);
1561
1562         omapfb_blank(VESA_NO_BLANKING, fbdev->fb_info[0]);
1563         return 0;
1564 }
1565
1566 static struct platform_driver omapfb_driver = {
1567         .probe          = omapfb_probe,
1568         .remove         = omapfb_remove,
1569         .suspend        = omapfb_suspend,
1570         .resume         = omapfb_resume,
1571         .driver         = {
1572                 .name   = MODULE_NAME,
1573                 .owner  = THIS_MODULE,
1574         },
1575 };
1576
1577 #ifndef MODULE
1578
1579 /* Process kernel command line parameters */
1580 static int __init omapfb_setup(char *options)
1581 {
1582         char *this_opt = NULL;
1583         int r = 0;
1584
1585         pr_debug("omapfb: options %s\n", options);
1586
1587         if (!options || !*options)
1588                 return 0;
1589
1590         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1591                 if (!strncmp(this_opt, "accel", 5))
1592                         def_accel = 1;
1593                 else if (!strncmp(this_opt, "vram:", 5)) {
1594                         char *suffix;
1595                         unsigned long vram;
1596                         vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1597                         switch (suffix[0]) {
1598                         case '\0':
1599                                 break;
1600                         case 'm':
1601                         case 'M':
1602                                 vram *= 1024;
1603                                 /* Fall through */
1604                         case 'k':
1605                         case 'K':
1606                                 vram *= 1024;
1607                                 break;
1608                         default:
1609                                 pr_debug("omapfb: invalid vram suffix %c\n",
1610                                          suffix[0]);
1611                                 r = -1;
1612                         }
1613                         def_vram[def_vram_cnt++] = vram;
1614                 }
1615                 else if (!strncmp(this_opt, "vxres:", 6))
1616                         def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1617                 else if (!strncmp(this_opt, "vyres:", 6))
1618                         def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1619                 else if (!strncmp(this_opt, "rotate:", 7))
1620                         def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1621                 else if (!strncmp(this_opt, "mirror:", 7))
1622                         def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1623                 else if (!strncmp(this_opt, "manual_update", 13))
1624                         manual_update = 1;
1625                 else {
1626                         pr_debug("omapfb: invalid option\n");
1627                         r = -1;
1628                 }
1629         }
1630
1631         return r;
1632 }
1633
1634 #endif
1635
1636 /* Register both the driver and the device */
1637 static int __init omapfb_init(void)
1638 {
1639 #ifndef MODULE
1640         char *option;
1641
1642         if (fb_get_options("omapfb", &option))
1643                 return -ENODEV;
1644         omapfb_setup(option);
1645 #endif
1646         /* Register the driver with LDM */
1647         if (platform_driver_register(&omapfb_driver)) {
1648                 pr_debug("failed to register omapfb driver\n");
1649                 return -ENODEV;
1650         }
1651
1652         return 0;
1653 }
1654
1655 static void __exit omapfb_cleanup(void)
1656 {
1657         platform_driver_unregister(&omapfb_driver);
1658 }
1659
1660 module_param_named(accel, def_accel, uint, 0664);
1661 module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
1662 module_param_named(vxres, def_vxres, long, 0664);
1663 module_param_named(vyres, def_vyres, long, 0664);
1664 module_param_named(rotate, def_rotate, uint, 0664);
1665 module_param_named(mirror, def_mirror, uint, 0664);
1666 module_param_named(manual_update, manual_update, bool, 0664);
1667
1668 module_init(omapfb_init);
1669 module_exit(omapfb_cleanup);
1670
1671 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1672 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1673 MODULE_LICENSE("GPL");