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