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
  30 #include <linux/config.h>
  31 #include <linux/module.h>
  32 #include <linux/mm.h>
  33 #include <linux/init.h>
  34 #include <linux/delay.h>
  35 #include <linux/platform_device.h>
  36 #include <linux/dma-mapping.h>
  37
  38 #include <asm/uaccess.h>
  39 #include <asm/atomic.h>
  40 #include <asm/mach-types.h>
  41
  42 #include <asm/arch/dma.h>
  43 #include <asm/arch/irqs.h>
  44 #include <asm/arch/mux.h>
  45 #include <asm/arch/board.h>
  46 #include <asm/arch/omapfb.h>
  47
  48 /* #define OMAPFB_DBG 1 */
  49
  50 #include "debug.h"
  51
  52 #define OMAPFB_DRIVER   "omapfb"
  53 #define MODULE_NAME     "omapfb"
  54
  55 #define pr_err(fmt, args...) printk(KERN_ERR MODULE_NAME ": " fmt, ## args)
  56
  57 static unsigned int     def_accel;
  58 static unsigned long    def_vram;
  59 static unsigned long    def_vxres;
  60 static unsigned long    def_vyres;
  61 static unsigned int     def_rotate;
  62 static unsigned int     def_mirror;
  63
  64 #ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
  65 static int              manual_update = 1;
  66 #else
  67 static int              manual_update;
  68 #endif
  69
  70 static struct caps_table_struct {
  71         unsigned long flag;
  72         const char *name;
  73 } omapfb_caps_table[] = {
  74         { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" },
  75         { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" },
  76 };
  77
  78 /*
  79  * ---------------------------------------------------------------------------
  80  * LCD panel
  81  * ---------------------------------------------------------------------------
  82  */
  83 extern struct lcd_panel h4_panel;
  84 extern struct lcd_panel h3_panel;
  85 extern struct lcd_panel h2_panel;
  86 extern struct lcd_panel p2_panel;
  87 extern struct lcd_panel osk_panel;
  88 extern struct lcd_panel palmte_panel;
  89 extern struct lcd_panel innovator1610_panel;
  90 extern struct lcd_panel innovator1510_panel;
  91 extern struct lcd_panel lph8923_panel;
  92
  93 static struct lcd_panel *panels[] = {
  94 #ifdef CONFIG_MACH_OMAP_H2
  95         &h2_panel,
  96 #endif
  97 #ifdef CONFIG_MACH_OMAP_H3
  98         &h3_panel,
  99 #endif
 100 #ifdef CONFIG_MACH_OMAP_H4
 101         &h4_panel,
 102 #endif
 103 #ifdef CONFIG_MACH_OMAP_PERSEUS2
 104         &p2_panel,
 105 #endif
 106 #ifdef CONFIG_MACH_OMAP_OSK
 107         &osk_panel,
 108 #endif
 109 #ifdef CONFIG_MACH_OMAP_PALMTE
 110         &palmte_panel,
 111 #endif
 112
 113 #ifdef CONFIG_MACH_OMAP_INNOVATOR
 114
 115 #ifdef CONFIG_ARCH_OMAP15XX
 116         &innovator1510_panel,
 117 #endif
 118 #ifdef CONFIG_ARCH_OMAP16XX
 119         &innovator1610_panel,
 120 #endif
 121
 122 #endif
 123 };
 124
 125 extern struct lcd_ctrl omap1_int_ctrl;
 126 extern struct lcd_ctrl omap2_int_ctrl;
 127 extern struct lcd_ctrl hwa742_ctrl;
 128 extern struct lcd_ctrl blizzard_ctrl;
 129
 130 static struct lcd_ctrl *ctrls[] = {
 131 #ifdef CONFIG_FB_OMAP_LCDC_INTERNAL
 132 #ifdef CONFIG_ARCH_OMAP1
 133         &omap1_int_ctrl,
 134 #else
 135         &omap2_int_ctrl,
 136 #endif
 137 #endif
 138 };
 139
 140 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
 141 #ifdef CONFIG_ARCH_OMAP1
 142 extern struct lcd_ctrl_extif sossi_extif;
 143 #else
 144 extern struct lcd_ctrl_extif rfbi_extif;
 145 #endif
 146 #endif
 147
 148 static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
 149 {
 150         down(&fbdev->rqueue_sema);
 151 }
 152
 153 static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
 154 {
 155         up(&fbdev->rqueue_sema);
 156 }
 157
 158 /*
 159  * ---------------------------------------------------------------------------
 160  * LCD controller and LCD DMA
 161  * ---------------------------------------------------------------------------
 162  */
 163 /* Lookup table to map elem size to elem type. */
 164 static const int dma_elem_type[] = {
 165         0,
 166         OMAP_DMA_DATA_TYPE_S8,
 167         OMAP_DMA_DATA_TYPE_S16,
 168         0,
 169         OMAP_DMA_DATA_TYPE_S32,
 170 };
 171
 172 /* Allocate resources needed for LCD controller and LCD DMA operations. Video
 173  * memory is allocated from system memory according to the virtual display
 174  * size, except if a bigger memory size is specified explicitly as a kernel
 175  * parameter.
 176  */
 177 static int ctrl_init(struct omapfb_device *fbdev)
 178 {
 179         int r;
 180
 181         DBGENTER(1);
 182
 183         r = fbdev->ctrl->init(fbdev, 0, def_vram);
 184         if (r < 0) {
 185                 pr_err("controller initialization failed\n");
 186                 goto exit;
 187         }
 188
 189         fbdev->ctrl->get_vram_layout(&fbdev->vram_size, &fbdev->vram_virt_base,
 190                                      &fbdev->vram_phys_base);
 191         memset((void *)fbdev->vram_virt_base, 0, fbdev->vram_size);
 192
 193         DBGPRINT(1, "vram_phys %08x vram_virt %p vram_size=%lu\n",
 194                  fbdev->vram_phys_base, fbdev->vram_virt_base,
 195                  fbdev->vram_size);
 196
 197         DBGLEAVE(1);
 198         return 0;
 199 exit:
 200         DBGLEAVE(1);
 201         return r;
 202 }
 203
 204 static void ctrl_cleanup(struct omapfb_device *fbdev)
 205 {
 206         fbdev->ctrl->cleanup();
 207 }
 208
 209 static int ctrl_change_mode(struct omapfb_device *fbdev)
 210 {
 211         int r;
 212         unsigned long offset;
 213         struct fb_var_screeninfo *var = &fbdev->fb_info->var;
 214
 215         DBGPRINT(1, "xoffset %d yoffset %d line_length %d bits_per_pixel %d\n",
 216                 var->xoffset, var->yoffset, fbdev->fb_info->fix.line_length,
 217                 var->bits_per_pixel);
 218         offset = var->yoffset * fbdev->fb_info->fix.line_length +
 219                  var->xoffset * var->bits_per_pixel / 8;
 220         r = fbdev->ctrl->setup_plane(OMAPFB_PLANE_GFX, OMAPFB_CHANNEL_OUT_LCD,
 221                                  offset, var->xres_virtual, 0, 0, var->xres,
 222                                  var->yres, fbdev->color_mode);
 223         DBGLEAVE(1);
 224
 225         return r;
 226 }
 227
 228 /*
 229  * ---------------------------------------------------------------------------
 230  * fbdev framework callbacks and the ioctl interface
 231  * ---------------------------------------------------------------------------
 232  */
 233 /* Called each time the omapfb device is opened */
 234 static int omapfb_open(struct fb_info *info, int user)
 235 {
 236         DBGENTER(1);
 237         DBGLEAVE(1);
 238         return 0;
 239 }
 240
 241 static void omapfb_sync(struct fb_info *info);
 242
 243 /* Called when the omapfb device is closed. We make sure that any pending
 244  * gfx DMA operations are ended, before we return. */
 245 static int omapfb_release(struct fb_info *info, int user)
 246 {
 247         DBGENTER(1);
 248
 249         omapfb_sync(info);
 250
 251         DBGLEAVE(1);
 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_device *fbdev = (struct omapfb_device *)info->par;
 263         int r = 0;
 264
 265         switch (fbdev->color_mode) {
 266         case OMAPFB_COLOR_YUV422:
 267         case OMAPFB_COLOR_YUV420:
 268                 r = -EINVAL;
 269                 break;
 270         case OMAPFB_COLOR_CLUT_8BPP:
 271         case OMAPFB_COLOR_CLUT_4BPP:
 272         case OMAPFB_COLOR_CLUT_2BPP:
 273         case OMAPFB_COLOR_CLUT_1BPP:
 274                 if (fbdev->ctrl->setcolreg)
 275                         r = fbdev->ctrl->setcolreg(regno, red, green, blue,
 276                                                         transp, update_hw_pal);
 277                 /* Fallthrough */
 278         case OMAPFB_COLOR_RGB565:
 279                 if (r != 0)
 280                         break;
 281
 282                 if (regno < 0) {
 283                         r = -EINVAL;
 284                         break;
 285                 }
 286
 287                 if (regno < 16) {
 288                         u16 pal;
 289                         pal = ((red >> 11) << 11) | ((green >> 10) << 5) |
 290                                 (blue >> 11);
 291                         ((u32 *)(info->pseudo_palette))[regno] = pal;
 292                 }
 293                 break;
 294         default:
 295                 BUG();
 296         }
 297         return r;
 298 }
 299
 300 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 301                             u_int transp, struct fb_info *info)
 302 {
 303         int r = 0;
 304
 305         DBGENTER(2);
 306
 307         _setcolreg(info, regno, red, green, blue, transp, 1);
 308
 309         DBGLEAVE(2);
 310
 311         return r;
 312 }
 313
 314 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
 315 {
 316         int count, index, r;
 317         u16 *red, *green, *blue, *transp;
 318         u16 trans = 0xffff;
 319
 320         red     = cmap->red;
 321         green   = cmap->green;
 322         blue    = cmap->blue;
 323         transp  = cmap->transp;
 324         index   = cmap->start;
 325
 326         for (count = 0; count < cmap->len; count++) {
 327                 if (transp)
 328                         trans = *transp++;
 329                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
 330                                 count == cmap->len - 1);
 331                 if (r != 0)
 332                         return r;
 333         }
 334
 335         return 0;
 336 }
 337
 338
 339 static void omapfb_update_full_screen(struct omapfb_device *fbdev);
 340
 341 static int omapfb_blank(int blank, struct fb_info *fbi)
 342 {
 343         struct omapfb_device *fbdev = (struct omapfb_device *)fbi->par;
 344         int r = 0;
 345
 346         DBGENTER(1);
 347
 348         omapfb_rqueue_lock(fbdev);
 349         switch (blank) {
 350         case VESA_NO_BLANKING:
 351                 if (fbdev->state == OMAPFB_SUSPENDED) {
 352                         fbdev->panel->enable();
 353                         if (fbdev->ctrl->resume)
 354                                 fbdev->ctrl->resume();
 355                         fbdev->state = OMAPFB_ACTIVE;
 356                         if (fbdev->ctrl->get_update_mode() ==
 357                                         OMAPFB_MANUAL_UPDATE)
 358                                 omapfb_update_full_screen(fbdev);
 359                 }
 360                 break;
 361         case VESA_POWERDOWN:
 362                 if (fbdev->state == OMAPFB_ACTIVE) {
 363                         if (fbdev->ctrl->suspend)
 364                                 fbdev->ctrl->suspend();
 365                         fbdev->panel->disable();
 366                         fbdev->state = OMAPFB_SUSPENDED;
 367                 }
 368                 break;
 369         default:
 370                 r = -EINVAL;
 371         }
 372         omapfb_rqueue_unlock(fbdev);
 373
 374         DBGLEAVE(1);
 375         return r;
 376 }
 377
 378 static void omapfb_sync(struct fb_info *fbi)
 379 {
 380         struct omapfb_device *fbdev = (struct omapfb_device *)fbi->par;
 381
 382         omapfb_rqueue_lock(fbdev);
 383         if (fbdev->ctrl->sync)
 384                 fbdev->ctrl->sync();
 385         omapfb_rqueue_unlock(fbdev);
 386 }
 387
 388 /* Set fb_info.fix fields and also updates fbdev.
 389  * When calling this fb_info.var must be set up already.
 390  */
 391 static void set_fb_fix(struct omapfb_device *fbdev)
 392 {
 393         struct fb_info           *fbi = fbdev->fb_info;
 394         struct fb_fix_screeninfo *fix = &fbi->fix;
 395         struct fb_var_screeninfo *var = &fbi->var;
 396
 397         strncpy(fix->id, OMAPFB_DRIVER, sizeof(fix->id));
 398         fix->type = FB_TYPE_PACKED_PIXELS;
 399         switch (var->bits_per_pixel) {
 400         case 16:
 401                 fix->visual = FB_VISUAL_TRUECOLOR;
 402                 break;
 403         case 1:
 404         case 2:
 405         case 4:
 406         case 8:
 407                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 408                 break;
 409         }
 410         fix->accel              = FB_ACCEL_OMAP1610;
 411         fix->line_length        = var->xres_virtual * var->bits_per_pixel / 8;
 412         fix->smem_len           = fbdev->vram_size;
 413         fix->smem_start         = fbdev->vram_phys_base;
 414 }
 415
 416 /* Check the values in var against our capabilities and in case of out of
 417  * bound values try to adjust them.
 418  */
 419 static int set_fb_var(struct omapfb_device *fbdev,
 420                       struct fb_var_screeninfo *var)
 421 {
 422         int             bpp;
 423         unsigned long   max_frame_size;
 424         unsigned long   line_size;
 425         struct lcd_panel *panel = fbdev->panel;
 426
 427         bpp = var->bits_per_pixel = panel->bpp;
 428
 429         switch (bpp) {
 430         case 16:
 431                 fbdev->color_mode = OMAPFB_COLOR_RGB565;
 432                 break;
 433         case 8:
 434                 fbdev->color_mode = OMAPFB_COLOR_CLUT_8BPP;
 435                 break;
 436         default:
 437                 /* FIXME: other BPPs not yet supported */
 438                 return -EINVAL;
 439         }
 440
 441         switch (var->rotate) {
 442         case 0:
 443         case 180:
 444                 var->xres = fbdev->panel->x_res;
 445                 var->yres = fbdev->panel->y_res;
 446                 break;
 447         case 90:
 448         case 270:
 449                 var->xres = fbdev->panel->y_res;
 450                 var->yres = fbdev->panel->x_res;
 451                 break;
 452         default:
 453                 return -EINVAL;
 454         }
 455         if (var->xres_virtual < var->xres)
 456                 var->xres_virtual = var->xres;
 457         if (var->yres_virtual < var->yres)
 458                 var->yres_virtual = var->yres;
 459         max_frame_size = fbdev->vram_size;
 460         line_size = var->xres_virtual * bpp / 8;
 461         if (line_size * var->yres_virtual > max_frame_size) {
 462                 /* Try to keep yres_virtual first */
 463                 line_size = max_frame_size / var->yres_virtual;
 464                 var->xres_virtual = line_size * 8 / bpp;
 465                 if (var->xres_virtual < var->xres) {
 466                         /* Still doesn't fit. Shrink yres_virtual too */
 467                         var->xres_virtual = var->xres;
 468                         line_size = var->xres * bpp / 8;
 469                         var->yres_virtual = max_frame_size / line_size;
 470                 }
 471         }
 472         if (var->xres + var->xoffset > var->xres_virtual)
 473                 var->xoffset = var->xres_virtual - var->xres;
 474         if (var->yres + var->yoffset > var->yres_virtual)
 475                 var->yoffset = var->yres_virtual - var->yres;
 476         line_size = var->xres * bpp / 8;
 477
 478         var->red.offset  = 11; var->red.length   = 5; var->red.msb_right   = 0;
 479         var->green.offset= 5;  var->green.length = 6; var->green.msb_right = 0;
 480         var->blue.offset = 0;  var->blue.length  = 5; var->blue.msb_right  = 0;
 481
 482         var->height             = -1;
 483         var->width              = -1;
 484         var->grayscale          = 0;
 485         var->nonstd             = 0;
 486
 487         /* pixclock in ps, the rest in pixclock */
 488         var->pixclock           = 10000000 / (panel->pixel_clock / 100);
 489         var->left_margin        = panel->hfp;
 490         var->right_margin       = panel->hbp;
 491         var->upper_margin       = panel->vfp;
 492         var->lower_margin       = panel->vbp;
 493         var->hsync_len          = panel->hsw;
 494         var->vsync_len          = panel->vsw;
 495
 496         /* TODO: get these from panel->config */
 497         var->vmode              = FB_VMODE_NONINTERLACED;
 498         var->sync               = 0;
 499
 500         return 0;
 501 }
 502
 503 static struct fb_var_screeninfo new_var;
 504
 505 /* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
 506 static void omapfb_rotate(struct fb_info *fbi, int rotate)
 507 {
 508         struct omapfb_device *fbdev = (struct omapfb_device *)fbi->par;
 509
 510         DBGENTER(1);
 511
 512         if (cpu_is_omap1510() && rotate != fbdev->fb_info->var.rotate) {
 513                 memcpy(&new_var, &fbi->var, sizeof(new_var));
 514                 new_var.rotate = rotate;
 515                 if (set_fb_var(fbdev, &new_var) == 0 &&
 516                     memcmp(&new_var, &fbi->var, sizeof(new_var))) {
 517                         memcpy(&fbi->var, &new_var, sizeof(new_var));
 518                         ctrl_change_mode(fbdev);
 519                 }
 520         }
 521
 522         DBGLEAVE(1);
 523 }
 524
 525 /* Set new x,y offsets in the virtual display for the visible area and switch
 526  * to the new mode.
 527  */
 528 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 529                                struct fb_info *fbi)
 530 {
 531         struct omapfb_device *fbdev = (struct omapfb_device *)fbi->par;
 532         int r = 0;
 533
 534         DBGENTER(1);
 535
 536         if (var->xoffset != fbi->var.xoffset ||
 537             var->yoffset != fbi->var.yoffset) {
 538                 memcpy(&new_var, &fbi->var, sizeof(new_var));
 539                 new_var.xoffset = var->xoffset;
 540                 new_var.yoffset = var->yoffset;
 541                 if (set_fb_var(fbdev, &new_var))
 542                         r = -EINVAL;
 543                 else {
 544                         memcpy(&fbi->var, &new_var, sizeof(new_var));
 545                         ctrl_change_mode(fbdev);
 546                 }
 547         }
 548
 549         DBGLEAVE(1);
 550         return r;
 551 }
 552
 553 /* Set mirror to vertical axis and switch to the new mode. */
 554 static int omapfb_mirror(struct omapfb_device *fbdev, int mirror)
 555 {
 556         int r = 0;
 557
 558         DBGENTER(1);
 559
 560         mirror = mirror ? 1 : 0;
 561         if (cpu_is_omap1510())
 562                 r = -EINVAL;
 563         else if (mirror != fbdev->mirror) {
 564                 fbdev->mirror = mirror;
 565                 r = ctrl_change_mode(fbdev);
 566         }
 567
 568         DBGLEAVE(1);
 569         return r;
 570 }
 571
 572 /* Check values in var, try to adjust them in case of out of bound values if
 573  * possible, or return error.
 574  */
 575 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 576 {
 577         struct omapfb_device *fbdev = (struct omapfb_device *)fbi->par;
 578         int r;
 579
 580         DBGENTER(1);
 581
 582         r = set_fb_var(fbdev, var);
 583
 584         DBGLEAVE(1);
 585         return r;
 586 }
 587
 588 /* Switch to a new mode. The parameters for it has been check already by
 589  * omapfb_check_var.
 590  */
 591 static int omapfb_set_par(struct fb_info *fbi)
 592 {
 593         int r;
 594         struct omapfb_device *fbdev = (struct omapfb_device *)fbi->par;
 595
 596         DBGENTER(1);
 597
 598         set_fb_fix(fbdev);
 599         r = ctrl_change_mode(fbdev);
 600
 601         DBGLEAVE(1);
 602         return r;
 603 }
 604
 605 static int omapfb_update_win(struct omapfb_device *fbdev,
 606                                 struct omapfb_update_window *win)
 607 {
 608         struct fb_var_screeninfo *var = &fbdev->fb_info->var;
 609         int ret;
 610
 611         if (win->x >= var->xres || win->y >= var->yres)
 612                 return -EINVAL;
 613
 614         if (!fbdev->ctrl->update_window ||
 615             fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
 616                 return -ENODEV;
 617
 618         if (win->x + win->width >= var->xres)
 619                 win->width = var->xres - win->x;
 620         if (win->y + win->height >= var->yres)
 621                 win->height = var->yres - win->y;
 622         if (!win->width || !win->height)
 623                 return 0;
 624
 625         omapfb_rqueue_lock(fbdev);
 626         ret = fbdev->ctrl->update_window(win, NULL, 0);
 627         omapfb_rqueue_unlock(fbdev);
 628
 629         return ret;
 630 }
 631
 632 static void omapfb_update_full_screen(struct omapfb_device *fbdev)
 633 {
 634         struct omapfb_update_window win;
 635
 636         win.x = 0;
 637         win.y = 0;
 638         win.width = fbdev->panel->x_res;
 639         win.height = fbdev->panel->y_res;
 640         win.format = 0;
 641
 642         omapfb_rqueue_lock(fbdev);
 643         fbdev->ctrl->update_window(&win, NULL, 0);
 644         omapfb_rqueue_unlock(fbdev);
 645 }
 646
 647 static int omapfb_setup_plane(struct omapfb_device *fbdev,
 648                               struct omapfb_setup_plane *sp)
 649 {
 650         int r;
 651
 652         omapfb_rqueue_lock(fbdev);
 653         r = fbdev->ctrl->setup_plane(sp->plane, sp->channel_out, sp->offset,
 654                                  sp->width, sp->pos_x, sp->pos_y, sp->width,
 655                                  sp->height, sp->color_mode);
 656         omapfb_rqueue_unlock(fbdev);
 657
 658         return r;
 659 }
 660
 661 static int omapfb_enable_plane(struct omapfb_device *fbdev, int plane,
 662                                 int enable)
 663 {
 664         int r;
 665
 666         omapfb_rqueue_lock(fbdev);
 667         r = fbdev->ctrl->enable_plane(plane, enable);
 668         omapfb_rqueue_unlock(fbdev);
 669
 670         return r;
 671 }
 672
 673 static int omapfb_set_color_key(struct omapfb_device *fbdev,
 674                                 struct omapfb_color_key *ck)
 675 {
 676         int r;
 677
 678         if (!fbdev->ctrl->set_color_key)
 679                 return -ENODEV;
 680
 681         omapfb_rqueue_lock(fbdev);
 682         r = fbdev->ctrl->set_color_key(ck);
 683         omapfb_rqueue_unlock(fbdev);
 684
 685         return r;
 686 }
 687
 688 static int omapfb_set_update_mode(struct omapfb_device *fbdev,
 689                                    enum omapfb_update_mode mode)
 690 {
 691         int r;
 692
 693         omapfb_rqueue_lock(fbdev);
 694         r = fbdev->ctrl->set_update_mode(mode);
 695         omapfb_rqueue_unlock(fbdev);
 696
 697         return r;
 698 }
 699
 700 static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
 701 {
 702         int r;
 703
 704         omapfb_rqueue_lock(fbdev);
 705         r = fbdev->ctrl->get_update_mode();
 706         omapfb_rqueue_unlock(fbdev);
 707
 708         return r;
 709 }
 710
 711 static unsigned long omapfb_get_caps(struct fb_info *fbi)
 712 {
 713         struct omapfb_device *fbdev = (struct omapfb_device *)fbi->par;
 714         unsigned long caps;
 715
 716         caps = 0;
 717         caps |= fbdev->panel->get_caps();
 718         caps |= fbdev->ctrl->get_caps();
 719         return caps;
 720 }
 721
 722 /* For lcd testing */
 723 void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
 724 {
 725         omapfb_rqueue_lock(fbdev);
 726         *(u16 *)fbdev->vram_virt_base = pixval;
 727         if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
 728                 struct omapfb_update_window win;
 729
 730                 win.x = 0;
 731                 win.y = 0;
 732                 win.width = 1;
 733                 win.height = 1;
 734                 win.format = 0;
 735                 fbdev->ctrl->update_window(&win, NULL, 0);
 736         }
 737         omapfb_rqueue_unlock(fbdev);
 738 }
 739 EXPORT_SYMBOL(omapfb_write_first_pixel);
 740
 741 /* Ioctl interface. Part of the kernel mode frame buffer API is duplicated
 742  * here to be accessible by user mode code. In addition transparent copy
 743  * graphics transformations, frame flipping support is provided through this
 744  * interface.
 745  */
 746 static int omapfb_ioctl(struct inode *inode, struct file *file,
 747                         unsigned int cmd, unsigned long arg,
 748                         struct fb_info *fbi)
 749 {
 750         struct omapfb_device    *fbdev = (struct omapfb_device *)fbi->par;
 751         struct fb_ops           *ops = fbi->fbops;
 752         union {
 753                 struct omapfb_update_window     update_window;
 754                 struct omapfb_setup_plane       setup_plane;
 755                 struct omapfb_enable_plane      enable_plane;
 756                 struct omapfb_color_key         color_key;
 757                 enum omapfb_update_mode         update_mode;
 758                 unsigned long           caps;
 759                 unsigned int            mirror;
 760         } p;
 761         int r = 0;
 762
 763         DBGENTER(2);
 764
 765         BUG_ON(!ops);
 766         DBGPRINT(2, "cmd=%010x\n", cmd);
 767         switch (cmd)
 768         {
 769         case OMAPFB_MIRROR:
 770                 if (get_user(p.mirror, (int __user *)arg))
 771                         r = -EFAULT;
 772                 else
 773                         omapfb_mirror(fbdev, p.mirror);
 774                 break;
 775         case OMAPFB_SYNC_GFX:
 776                 omapfb_sync(fbi);
 777                 break;
 778         case OMAPFB_VSYNC:
 779                 break;
 780         case OMAPFB_SET_UPDATE_MODE:
 781                 if (get_user(p.update_mode, (int __user *)arg))
 782                         r = -EFAULT;
 783                 else
 784                         r = omapfb_set_update_mode(fbdev, p.update_mode);
 785                 break;
 786         case OMAPFB_GET_UPDATE_MODE:
 787                 p.update_mode = omapfb_get_update_mode(fbdev);
 788                 if (put_user(p.update_mode,
 789                                         (enum omapfb_update_mode __user *)arg))
 790                         r = -EFAULT;
 791                 break;
 792         case OMAPFB_UPDATE_WINDOW:
 793                 if (copy_from_user(&p.update_window, (void __user *)arg,
 794                                    sizeof(p.update_window)))
 795                         r = -EFAULT;
 796                 else
 797                         r = omapfb_update_win(fbdev, &p.update_window);
 798                 break;
 799         case OMAPFB_SETUP_PLANE:
 800                 if (copy_from_user(&p.setup_plane, (void __user *)arg,
 801                                    sizeof(p.setup_plane)))
 802                         r = -EFAULT;
 803                 else
 804                         r = omapfb_setup_plane(fbdev, &p.setup_plane);
 805                 break;
 806         case OMAPFB_ENABLE_PLANE:
 807                 if (copy_from_user(&p.enable_plane, (void __user *)arg,
 808                                    sizeof(p.enable_plane)))
 809                         r = -EFAULT;
 810                 else
 811                         r = omapfb_enable_plane(fbdev,
 812                                 p.enable_plane.plane, p.enable_plane.enable);
 813                 break;
 814         case OMAPFB_SET_COLOR_KEY:
 815                 if (copy_from_user(&p.color_key, (void __user *)arg,
 816                                    sizeof(p.color_key)))
 817                         r = -EFAULT;
 818                 else
 819                         r = omapfb_set_color_key(fbdev, &p.color_key);
 820                 break;
 821         case OMAPFB_GET_CAPS:
 822                 p.caps = omapfb_get_caps(fbi);
 823                 if (put_user(p.caps, (unsigned long __user *)arg))
 824                         r = -EFAULT;
 825                 break;
 826         case OMAPFB_LCD_TEST:
 827                 {
 828                         int test_num;
 829
 830                         if (get_user(test_num, (int __user *)arg)) {
 831                                 r = -EFAULT;
 832                                 break;
 833                         }
 834                         if (!fbdev->panel->run_test) {
 835                                 r = -EINVAL;
 836                                 break;
 837                         }
 838                         r = fbdev->panel->run_test(test_num);
 839                         break;
 840                 }
 841         case OMAPFB_CTRL_TEST:
 842                 {
 843                         int test_num;
 844
 845                         if (get_user(test_num, (int __user *)arg)) {
 846                                 r = -EFAULT;
 847                                 break;
 848                         }
 849                         if (!fbdev->ctrl->run_test) {
 850                                 r = -EINVAL;
 851                                 break;
 852                         }
 853                         r = fbdev->ctrl->run_test(test_num);
 854                         break;
 855                 }
 856         default:
 857                 r = -EINVAL;
 858         }
 859
 860         DBGLEAVE(2);
 861         return r;
 862 }
 863
 864 /* Callback table for the frame buffer framework. Some of these pointers
 865  * will be changed according to the current setting of fb_info->accel_flags.
 866  */
 867 static struct fb_ops omapfb_ops = {
 868         .owner          = THIS_MODULE,
 869         .fb_open        = omapfb_open,
 870         .fb_release     = omapfb_release,
 871         .fb_setcolreg   = omapfb_setcolreg,
 872         .fb_setcmap     = omapfb_setcmap,
 873         .fb_fillrect    = cfb_fillrect,
 874         .fb_copyarea    = cfb_copyarea,
 875         .fb_imageblit   = cfb_imageblit,
 876         .fb_blank       = omapfb_blank,
 877         .fb_ioctl       = omapfb_ioctl,
 878         .fb_check_var   = omapfb_check_var,
 879         .fb_set_par     = omapfb_set_par,
 880         .fb_rotate      = omapfb_rotate,
 881         .fb_pan_display = omapfb_pan_display,
 882 };
 883
 884 /*
 885  * ---------------------------------------------------------------------------
 886  * Sysfs interface
 887  * ---------------------------------------------------------------------------
 888  */
 889 /* omapfbX sysfs entries */
 890 static ssize_t omapfb_show_caps_num(struct device *dev, struct device_attribute *attr, char *buf)
 891 {
 892         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
 893
 894         return snprintf(buf, PAGE_SIZE, "%#010lx\n",
 895                 omapfb_get_caps(fbdev->fb_info));
 896 }
 897
 898 static ssize_t omapfb_show_caps_text(struct device *dev, struct device_attribute *attr, char *buf)
 899 {
 900         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
 901         int pos = 0;
 902         int i;
 903         unsigned long caps;
 904
 905         caps = omapfb_get_caps(fbdev->fb_info);
 906         for (i = 0; i < ARRAY_SIZE(omapfb_caps_table) && pos < PAGE_SIZE; i++) {
 907                 if (omapfb_caps_table[i].flag & caps) {
 908                         pos += snprintf(&buf[pos], PAGE_SIZE - pos, "%s\n",
 909                                         omapfb_caps_table[i].name);
 910                 }
 911         }
 912         return min((int)PAGE_SIZE, pos);
 913 }
 914
 915 static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
 916 static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
 917
 918 /* panel sysfs entries */
 919 static ssize_t omapfb_show_panel_name(struct device *dev,
 920                                       struct device_attribute *attr, char *buf)
 921 {
 922         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
 923
 924         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
 925 }
 926
 927 static ssize_t omapfb_show_bklight_level(struct device *dev,
 928                                          struct device_attribute *attr,
 929                                          char *buf)
 930 {
 931         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
 932         int r;
 933
 934         if (fbdev->panel->get_bklight_level) {
 935                 r = snprintf(buf, PAGE_SIZE, "%d\n",
 936                              fbdev->panel->get_bklight_level());
 937         } else
 938                 r = -ENODEV;
 939         return r;
 940 }
 941
 942 static ssize_t omapfb_store_bklight_level(struct device *dev,
 943                                           struct device_attribute *attr,
 944                                           const char *buf, size_t size)
 945 {
 946         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
 947         int r;
 948
 949         if (fbdev->panel->set_bklight_level) {
 950                 unsigned int level;
 951
 952                 if (sscanf(buf, "%10d", &level) == 1) {
 953                         r = fbdev->panel->set_bklight_level(level);
 954                 } else
 955                         r = -EINVAL;
 956         } else
 957                 r = -ENODEV;
 958         return r ? r : size;
 959 }
 960
 961 static ssize_t omapfb_show_bklight_max(struct device *dev,
 962                                        struct device_attribute *attr, char *buf)
 963 {
 964         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
 965         int r;
 966
 967         if (fbdev->panel->get_bklight_level) {
 968                 r = snprintf(buf, PAGE_SIZE, "%d\n",
 969                              fbdev->panel->get_bklight_max());
 970         } else
 971                 r = -ENODEV;
 972         return r;
 973 }
 974
 975 static struct device_attribute dev_attr_panel_name =
 976         __ATTR(name, 0444, omapfb_show_panel_name, NULL);
 977 static DEVICE_ATTR(backlight_level, 0664,
 978                    omapfb_show_bklight_level, omapfb_store_bklight_level);
 979 static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
 980
 981 static struct attribute *panel_attrs[] = {
 982         &dev_attr_panel_name.attr,
 983         &dev_attr_backlight_level.attr,
 984         &dev_attr_backlight_max.attr,
 985         NULL,
 986 };
 987
 988 static struct attribute_group panel_attr_grp = {
 989         .name  = "panel",
 990         .attrs = panel_attrs,
 991 };
 992
 993 /* ctrl sysfs entries */
 994 static ssize_t omapfb_show_ctrl_name(struct device *dev,
 995                                      struct device_attribute *attr, char *buf)
 996 {
 997         struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
 998
 999         return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
1000 }
1001
1002 static struct device_attribute dev_attr_ctrl_name =
1003         __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
1004
1005 static struct attribute *ctrl_attrs[] = {
1006         &dev_attr_ctrl_name.attr,
1007         NULL,
1008 };
1009
1010 static struct attribute_group ctrl_attr_grp = {
1011         .name  = "ctrl",
1012         .attrs = ctrl_attrs,
1013 };
1014
1015 static int omapfb_register_sysfs(struct omapfb_device *fbdev)
1016 {
1017         int r;
1018
1019         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
1020                 goto fail0;
1021
1022         if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
1023                 goto fail1;
1024
1025         if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
1026                 goto fail2;
1027
1028         if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
1029                 goto fail3;
1030
1031         return 0;
1032 fail3:
1033         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1034 fail2:
1035         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1036 fail1:
1037         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1038 fail0:
1039         pr_err("unable to register sysfs interface\n");
1040         return r;
1041 }
1042
1043 static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
1044 {
1045         sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
1046         sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
1047         device_remove_file(fbdev->dev, &dev_attr_caps_num);
1048         device_remove_file(fbdev->dev, &dev_attr_caps_text);
1049 }
1050
1051 /*
1052  * ---------------------------------------------------------------------------
1053  * LDM callbacks
1054  * ---------------------------------------------------------------------------
1055  */
1056 /* Initialize system fb_info object and set the default video mode.
1057  * The frame buffer memory already allocated by lcddma_init
1058  */
1059 static int fbinfo_init(struct omapfb_device *fbdev)
1060 {
1061         struct fb_info                  *info = fbdev->fb_info;
1062         struct fb_var_screeninfo        *var = &info->var;
1063         int                             r = 0;
1064
1065         DBGENTER(1);
1066
1067         BUG_ON(!fbdev->vram_virt_base);
1068
1069         info->fbops = &omapfb_ops;
1070         info->flags = FBINFO_FLAG_DEFAULT;
1071         info->screen_base = (char __iomem *)fbdev->vram_virt_base;
1072
1073         info->pseudo_palette = fbdev->pseudo_palette;
1074
1075         var->accel_flags  = def_accel ? FB_ACCELF_TEXT : 0;
1076         var->xres_virtual = def_vxres;
1077         var->yres_virtual = def_vyres;
1078         var->rotate       = def_rotate;
1079
1080         fbdev->mirror = def_mirror;
1081
1082         set_fb_var(fbdev, var);
1083         set_fb_fix(fbdev);
1084
1085         r = fb_alloc_cmap(&info->cmap, 16, 0);
1086         if (r != 0)
1087                 pr_err("unable to allocate color map memory\n");
1088
1089         DBGLEAVE(1);
1090         return r;
1091 }
1092
1093 /* Release the fb_info object */
1094 static void fbinfo_cleanup(struct omapfb_device *fbdev)
1095 {
1096         DBGENTER(1);
1097
1098         fb_dealloc_cmap(&fbdev->fb_info->cmap);
1099
1100         DBGLEAVE(1);
1101 }
1102
1103 /* Free driver resources. Can be called to rollback an aborted initialization
1104  * sequence.
1105  */
1106 static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
1107 {
1108         switch (state) {
1109         case OMAPFB_ACTIVE:
1110                 unregister_framebuffer(fbdev->fb_info);
1111         case 6:
1112                 omapfb_unregister_sysfs(fbdev);
1113                 omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
1114         case 5:
1115                 fbdev->panel->disable();
1116         case 4:
1117                 fbinfo_cleanup(fbdev);
1118         case 3:
1119                 ctrl_cleanup(fbdev);
1120         case 2:
1121                 fbdev->panel->cleanup();
1122         case 1:
1123                 dev_set_drvdata(fbdev->dev, NULL);
1124                 framebuffer_release(fbdev->fb_info);
1125         case 0:
1126                 /* nothing to free */
1127                 break;
1128         default:
1129                 BUG();
1130         }
1131 }
1132
1133 static int omapfb_find_panel(struct omapfb_device *fbdev)
1134 {
1135         const struct omap_lcd_config *conf;
1136         char name[17];
1137         int i;
1138
1139         conf = (struct omap_lcd_config *)fbdev->dev->platform_data;
1140         fbdev->panel = NULL;
1141         if (conf == NULL)
1142                 return -1;
1143
1144         strncpy(name, conf->panel_name, sizeof(name) - 1);
1145         name[sizeof(name) - 1] = 0;
1146         for (i = 0; i < ARRAY_SIZE(panels); i++) {
1147                 if (strcmp(panels[i]->name, name) == 0) {
1148                         fbdev->panel = panels[i];
1149                         break;
1150                 }
1151         }
1152
1153         if (fbdev->panel == NULL)
1154                 return -1;
1155
1156         return 0;
1157 }
1158
1159 static int omapfb_find_ctrl(struct omapfb_device *fbdev)
1160 {
1161         struct omap_lcd_config *conf;
1162         char name[17];
1163         int i;
1164
1165         conf = (struct omap_lcd_config *)fbdev->dev->platform_data;
1166
1167         fbdev->ctrl = NULL;
1168         if (conf == NULL)
1169                 return -1;
1170
1171         strncpy(name, conf->ctrl_name, sizeof(name) - 1);
1172         name[sizeof(name) - 1] = '\0';
1173
1174         if (strcmp(name, "internal") == 0) {
1175                 fbdev->ctrl = fbdev->int_ctrl;
1176                 return 0;
1177         }
1178
1179         for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
1180                 if (strcmp(ctrls[i]->name, name) == 0) {
1181                         fbdev->ctrl = ctrls[i];
1182                         break;
1183                 }
1184         }
1185
1186         if (fbdev->ctrl == NULL)
1187                 return -1;
1188
1189         return 0;
1190 }
1191
1192 static void check_required_callbacks(struct omapfb_device *fbdev)
1193 {
1194 #define _C(x) (fbdev->ctrl->x != NULL)
1195 #define _P(x) (fbdev->panel->x != NULL)
1196         BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
1197         BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
1198                  _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
1199                  _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
1200                  _P(get_caps)));
1201 #undef _P
1202 #undef _C
1203 }
1204
1205 /* Called by LDM binding to probe and attach a new device.
1206  * Initialization sequence:
1207  *   1. allocate system fb_info structure
1208  *      select panel type according to machine type
1209  *   2. init LCD panel
1210  *   3. init LCD controller and LCD DMA
1211  *   4. init system fb_info structure
1212  *   5. init gfx DMA
1213  *   6. enable LCD panel
1214  *      start LCD frame transfer
1215  *   7. register system fb_info structure
1216  */
1217 static int omapfb_probe(struct device *dev)
1218 {
1219         struct platform_device  *pdev;
1220         struct omapfb_device    *fbdev = NULL;
1221         struct fb_info          *fbi;
1222         int                     init_state;
1223         unsigned long           phz, hhz, vhz;
1224         struct lcd_panel        *panel;
1225         int                     r = 0;
1226
1227         DBGENTER(1);
1228
1229         init_state = 0;
1230
1231         pdev = to_platform_device(dev);
1232         if (pdev->num_resources != 0) {
1233                 pr_err("probed for an unknown device\n");
1234                 r = -ENODEV;
1235                 goto cleanup;
1236         }
1237
1238         fbi = framebuffer_alloc(sizeof(struct omapfb_device), dev);
1239         if (fbi == NULL) {
1240                 pr_err("unable to allocate memory for device info\n");
1241                 r = -ENOMEM;
1242                 goto cleanup;
1243         }
1244         init_state++;
1245
1246         fbdev = (struct omapfb_device *)fbi->par;
1247         fbdev->fb_info = fbi;
1248         fbdev->dev = dev;
1249         dev_set_drvdata(dev, fbdev);
1250
1251         init_MUTEX(&fbdev->rqueue_sema);
1252
1253 #ifdef CONFIG_ARCH_OMAP1
1254         fbdev->int_ctrl = &omap1_int_ctrl;
1255 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1256         fbdev->ext_if = &sossi_extif;
1257 #endif
1258 #else   /* OMAP2 */
1259         fbdev->int_ctrl = &omap2_int_ctrl;
1260 #ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
1261         fbdev->ext_if = &rfbi_extif;
1262 #endif
1263 #endif
1264         if (omapfb_find_ctrl(fbdev) < 0) {
1265                 pr_err("LCD controller not found, board not supported\n");
1266                 r = -ENODEV;
1267                 goto cleanup;
1268         }
1269
1270         if (omapfb_find_panel(fbdev) < 0) {
1271                 pr_err("LCD panel not found, board not supported\n");
1272                 r = -ENODEV;
1273                 goto cleanup;
1274         }
1275
1276         check_required_callbacks(fbdev);
1277
1278
1279         pr_info(MODULE_NAME ": configured for panel %s\n", fbdev->panel->name);
1280
1281         r = fbdev->panel->init(fbdev);
1282         if (r)
1283                 goto cleanup;
1284         init_state++;
1285
1286         r = ctrl_init(fbdev);
1287         if (r)
1288                 goto cleanup;
1289         init_state++;
1290
1291         r = fbinfo_init(fbdev);
1292         if (r)
1293                 goto cleanup;
1294         init_state++;
1295
1296 #ifdef CONFIG_FB_OMAP_DMA_TUNE
1297         /* Set DMA priority for EMIFF access to highest */
1298         omap_set_dma_priority(OMAP_DMA_PORT_EMIFF, 15);
1299 #endif
1300
1301         r = fbdev->panel->enable();
1302         if (r)
1303                 goto cleanup;
1304         init_state++;
1305
1306         r = ctrl_change_mode(fbdev);
1307         if (r) {
1308                 pr_err("mode setting failed\n");
1309                 goto cleanup;
1310         }
1311
1312         omapfb_enable_plane(fbdev, 0, 1);
1313
1314         omapfb_set_update_mode(fbdev, manual_update ?
1315                                    OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
1316
1317         r = omapfb_register_sysfs(fbdev);
1318         if (r)
1319                 goto cleanup;
1320         init_state++;
1321
1322         r = register_framebuffer(fbdev->fb_info);
1323         if (r != 0) {
1324                 pr_err("register_framebuffer failed\n");
1325                 goto cleanup;
1326         }
1327
1328         fbdev->state = OMAPFB_ACTIVE;
1329
1330         panel = fbdev->panel;
1331         phz = panel->pixel_clock * 1000;
1332         hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
1333         vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
1334
1335         pr_info(MODULE_NAME ": initialized vram=%lu "
1336                         "pixclock %lu kHz hfreq %lu.%lu kHz vfreq %lu.%lu Hz\n",
1337                         fbdev->vram_size,
1338                         phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
1339
1340         DBGLEAVE(1);
1341         return 0;
1342
1343 cleanup:
1344         omapfb_free_resources(fbdev, init_state);
1345
1346         DBGLEAVE(1);
1347         return r;
1348 }
1349
1350 /* Called when the device is being detached from the driver */
1351 static int omapfb_remove(struct device *dev)
1352 {
1353         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1354         enum omapfb_state saved_state = fbdev->state;
1355
1356         DBGENTER(1);
1357         /* FIXME: wait till completion of pending events */
1358
1359         fbdev->state = OMAPFB_DISABLED;
1360         omapfb_free_resources(fbdev, saved_state);
1361
1362         DBGLEAVE(1);
1363         return 0;
1364 }
1365
1366 /* PM suspend */
1367 static int omapfb_suspend(struct device *dev, pm_message_t mesg)
1368 {
1369         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1370
1371         DBGENTER(1);
1372
1373         omapfb_blank(VESA_POWERDOWN, fbdev->fb_info);
1374
1375         DBGLEAVE(1);
1376
1377         return 0;
1378 }
1379
1380 /* PM resume */
1381 static int omapfb_resume(struct device *dev)
1382 {
1383         struct omapfb_device *fbdev = dev_get_drvdata(dev);
1384
1385         DBGENTER(1);
1386
1387         omapfb_blank(VESA_NO_BLANKING, fbdev->fb_info);
1388
1389         DBGLEAVE(1);
1390         return 0;
1391 }
1392
1393 static struct device_driver omapfb_driver = {
1394         .name           = OMAPFB_DRIVER,
1395         .bus            = &platform_bus_type,
1396         .probe          = omapfb_probe,
1397         .remove         = omapfb_remove,
1398         .suspend        = omapfb_suspend,
1399         .resume         = omapfb_resume
1400 };
1401
1402 #ifndef MODULE
1403
1404 /* Process kernel command line parameters */
1405 static int __init omapfb_setup(char *options)
1406 {
1407         char *this_opt = NULL;
1408         int r = 0;
1409
1410         DBGENTER(1);
1411
1412         if (!options || !*options)
1413                 goto exit;
1414
1415         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1416                 if (!strncmp(this_opt, "accel", 5))
1417                         def_accel = 1;
1418                 else if (!strncmp(this_opt, "vram:", 5)) {
1419                         char *suffix;
1420                         def_vram = (simple_strtoul(this_opt + 5, &suffix, 0));
1421                         switch (suffix[0]) {
1422                         case '\0':
1423                                 break;
1424                         case 'm':
1425                         case 'M':
1426                                 def_vram *= 1024;
1427                                 /* Fall through */
1428                         case 'k':
1429                         case 'K':
1430                                 def_vram *= 1024;
1431                                 break;
1432                         default:
1433                                 pr_err("invalid vram suffix\n");
1434                                 r = -1;
1435                         }
1436                 }
1437                 else if (!strncmp(this_opt, "vxres:", 6))
1438                         def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
1439                 else if (!strncmp(this_opt, "vyres:", 6))
1440                         def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
1441                 else if (!strncmp(this_opt, "rotate:", 7))
1442                         def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
1443                 else if (!strncmp(this_opt, "mirror:", 7))
1444                         def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
1445                 else if (!strncmp(this_opt, "manual_update", 13))
1446                         manual_update = 1;
1447                 else {
1448                         pr_err("invalid option\n");
1449                         r = -1;
1450                 }
1451         }
1452 exit:
1453         DBGLEAVE(1);
1454         return r;
1455 }
1456
1457 #endif
1458
1459 /* Register both the driver and the device */
1460 static int __init omapfb_init(void)
1461 {
1462         int r = 0;
1463
1464         DBGENTER(1);
1465
1466 #ifndef MODULE
1467         {
1468                 char *option;
1469
1470                 if (fb_get_options("omapfb", &option)) {
1471                         r = -ENODEV;
1472                         goto exit;
1473                 }
1474                 omapfb_setup(option);
1475         }
1476 #endif
1477         /* Register the driver with LDM */
1478         if (driver_register(&omapfb_driver)) {
1479                 pr_err("failed to register omapfb driver\n");
1480                 r = -ENODEV;
1481                 goto exit;
1482         }
1483
1484 exit:
1485         DBGLEAVE(1);
1486         return r;
1487 }
1488
1489 static void __exit omapfb_cleanup(void)
1490 {
1491         DBGENTER(1);
1492
1493         driver_unregister(&omapfb_driver);
1494
1495         DBGLEAVE(1);
1496 }
1497
1498 module_param_named(accel, def_accel, uint, 0664);
1499 module_param_named(vram, def_vram, ulong, 0664);
1500 module_param_named(vxres, def_vxres, long, 0664);
1501 module_param_named(vyres, def_vyres, long, 0664);
1502 module_param_named(rotate, def_rotate, uint, 0664);
1503 module_param_named(mirror, def_mirror, uint, 0664);
1504 module_param_named(manual_update, manual_update, bool, 0664);
1505
1506 module_init(omapfb_init);
1507 module_exit(omapfb_cleanup);
1508
1509 MODULE_DESCRIPTION("TI OMAP framebuffer driver");
1510 MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
1511 MODULE_LICENSE("GPL");