drivers/video/omap2/omapfb/omapfb-main.c

   1 /*
   2  * linux/drivers/video/omap2/omapfb-main.c
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   6  *
   7  * Some code and ideas taken from drivers/video/omap/ driver
   8  * by Imre Deak.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published by
  12  * the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/slab.h>
  26 #include <linux/fb.h>
  27 #include <linux/dma-mapping.h>
  28 #include <linux/vmalloc.h>
  29 #include <linux/device.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/omapfb.h>
  32
  33 #include <video/omapdss.h>
  34 #include <plat/vram.h>
  35 #include <plat/vrfb.h>
  36
  37 #include "omapfb.h"
  38
  39 #define MODULE_NAME     "omapfb"
  40
  41 #define OMAPFB_PLANE_XRES_MIN           8
  42 #define OMAPFB_PLANE_YRES_MIN           8
  43
  44 static char *def_mode;
  45 static char *def_vram;
  46 static int def_vrfb;
  47 static int def_rotate;
  48 static int def_mirror;
  49 static bool auto_update;
  50 static unsigned int auto_update_freq;
  51 module_param(auto_update, bool, 0);
  52 module_param(auto_update_freq, uint, 0644);
  53
  54 #ifdef DEBUG
  55 unsigned int omapfb_debug;
  56 module_param_named(debug, omapfb_debug, bool, 0644);
  57 static unsigned int omapfb_test_pattern;
  58 module_param_named(test, omapfb_test_pattern, bool, 0644);
  59 #endif
  60
  61 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
  62 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
  63                 struct omap_dss_device *dssdev);
  64
  65 #ifdef DEBUG
  66 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  67 {
  68         struct fb_var_screeninfo *var = &fbi->var;
  69         struct fb_fix_screeninfo *fix = &fbi->fix;
  70         void __iomem *addr = fbi->screen_base;
  71         const unsigned bytespp = var->bits_per_pixel >> 3;
  72         const unsigned line_len = fix->line_length / bytespp;
  73
  74         int r = (color >> 16) & 0xff;
  75         int g = (color >> 8) & 0xff;
  76         int b = (color >> 0) & 0xff;
  77
  78         if (var->bits_per_pixel == 16) {
  79                 u16 __iomem *p = (u16 __iomem *)addr;
  80                 p += y * line_len + x;
  81
  82                 r = r * 32 / 256;
  83                 g = g * 64 / 256;
  84                 b = b * 32 / 256;
  85
  86                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  87         } else if (var->bits_per_pixel == 24) {
  88                 u8 __iomem *p = (u8 __iomem *)addr;
  89                 p += (y * line_len + x) * 3;
  90
  91                 __raw_writeb(b, p + 0);
  92                 __raw_writeb(g, p + 1);
  93                 __raw_writeb(r, p + 2);
  94         } else if (var->bits_per_pixel == 32) {
  95                 u32 __iomem *p = (u32 __iomem *)addr;
  96                 p += y * line_len + x;
  97                 __raw_writel(color, p);
  98         }
  99 }
 100
 101 static void fill_fb(struct fb_info *fbi)
 102 {
 103         struct fb_var_screeninfo *var = &fbi->var;
 104         const short w = var->xres_virtual;
 105         const short h = var->yres_virtual;
 106         void __iomem *addr = fbi->screen_base;
 107         int y, x;
 108
 109         if (!addr)
 110                 return;
 111
 112         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 113
 114         for (y = 0; y < h; y++) {
 115                 for (x = 0; x < w; x++) {
 116                         if (x < 20 && y < 20)
 117                                 draw_pixel(fbi, x, y, 0xffffff);
 118                         else if (x < 20 && (y > 20 && y < h - 20))
 119                                 draw_pixel(fbi, x, y, 0xff);
 120                         else if (y < 20 && (x > 20 && x < w - 20))
 121                                 draw_pixel(fbi, x, y, 0xff00);
 122                         else if (x > w - 20 && (y > 20 && y < h - 20))
 123                                 draw_pixel(fbi, x, y, 0xff0000);
 124                         else if (y > h - 20 && (x > 20 && x < w - 20))
 125                                 draw_pixel(fbi, x, y, 0xffff00);
 126                         else if (x == 20 || x == w - 20 ||
 127                                         y == 20 || y == h - 20)
 128                                 draw_pixel(fbi, x, y, 0xffffff);
 129                         else if (x == y || w - x == h - y)
 130                                 draw_pixel(fbi, x, y, 0xff00ff);
 131                         else if (w - x == y || x == h - y)
 132                                 draw_pixel(fbi, x, y, 0x00ffff);
 133                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 134                                 int t = x * 3 / w;
 135                                 unsigned r = 0, g = 0, b = 0;
 136                                 unsigned c;
 137                                 if (var->bits_per_pixel == 16) {
 138                                         if (t == 0)
 139                                                 b = (y % 32) * 256 / 32;
 140                                         else if (t == 1)
 141                                                 g = (y % 64) * 256 / 64;
 142                                         else if (t == 2)
 143                                                 r = (y % 32) * 256 / 32;
 144                                 } else {
 145                                         if (t == 0)
 146                                                 b = (y % 256);
 147                                         else if (t == 1)
 148                                                 g = (y % 256);
 149                                         else if (t == 2)
 150                                                 r = (y % 256);
 151                                 }
 152                                 c = (r << 16) | (g << 8) | (b << 0);
 153                                 draw_pixel(fbi, x, y, c);
 154                         } else {
 155                                 draw_pixel(fbi, x, y, 0);
 156                         }
 157                 }
 158         }
 159 }
 160 #endif
 161
 162 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
 163 {
 164         const struct vrfb *vrfb = &ofbi->region->vrfb;
 165         unsigned offset;
 166
 167         switch (rot) {
 168         case FB_ROTATE_UR:
 169                 offset = 0;
 170                 break;
 171         case FB_ROTATE_CW:
 172                 offset = vrfb->yoffset;
 173                 break;
 174         case FB_ROTATE_UD:
 175                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 176                 break;
 177         case FB_ROTATE_CCW:
 178                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 179                 break;
 180         default:
 181                 BUG();
 182         }
 183
 184         offset *= vrfb->bytespp;
 185
 186         return offset;
 187 }
 188
 189 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
 190 {
 191         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 192                 return ofbi->region->vrfb.paddr[rot]
 193                         + omapfb_get_vrfb_offset(ofbi, rot);
 194         } else {
 195                 return ofbi->region->paddr;
 196         }
 197 }
 198
 199 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
 200 {
 201         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 202                 return ofbi->region->vrfb.paddr[0];
 203         else
 204                 return ofbi->region->paddr;
 205 }
 206
 207 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
 208 {
 209         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 210                 return ofbi->region->vrfb.vaddr[0];
 211         else
 212                 return ofbi->region->vaddr;
 213 }
 214
 215 static struct omapfb_colormode omapfb_colormodes[] = {
 216         {
 217                 .dssmode = OMAP_DSS_COLOR_UYVY,
 218                 .bits_per_pixel = 16,
 219                 .nonstd = OMAPFB_COLOR_YUV422,
 220         }, {
 221                 .dssmode = OMAP_DSS_COLOR_YUV2,
 222                 .bits_per_pixel = 16,
 223                 .nonstd = OMAPFB_COLOR_YUY422,
 224         }, {
 225                 .dssmode = OMAP_DSS_COLOR_ARGB16,
 226                 .bits_per_pixel = 16,
 227                 .red    = { .length = 4, .offset = 8, .msb_right = 0 },
 228                 .green  = { .length = 4, .offset = 4, .msb_right = 0 },
 229                 .blue   = { .length = 4, .offset = 0, .msb_right = 0 },
 230                 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
 231         }, {
 232                 .dssmode = OMAP_DSS_COLOR_RGB16,
 233                 .bits_per_pixel = 16,
 234                 .red    = { .length = 5, .offset = 11, .msb_right = 0 },
 235                 .green  = { .length = 6, .offset = 5, .msb_right = 0 },
 236                 .blue   = { .length = 5, .offset = 0, .msb_right = 0 },
 237                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 238         }, {
 239                 .dssmode = OMAP_DSS_COLOR_RGB24P,
 240                 .bits_per_pixel = 24,
 241                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 242                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 243                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 244                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 245         }, {
 246                 .dssmode = OMAP_DSS_COLOR_RGB24U,
 247                 .bits_per_pixel = 32,
 248                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 249                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 250                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 251                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 252         }, {
 253                 .dssmode = OMAP_DSS_COLOR_ARGB32,
 254                 .bits_per_pixel = 32,
 255                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 256                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 257                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 258                 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
 259         }, {
 260                 .dssmode = OMAP_DSS_COLOR_RGBA32,
 261                 .bits_per_pixel = 32,
 262                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 263                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 264                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 265                 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
 266         }, {
 267                 .dssmode = OMAP_DSS_COLOR_RGBX32,
 268                 .bits_per_pixel = 32,
 269                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 270                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 271                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 272                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 273         },
 274 };
 275
 276 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
 277                 struct omapfb_colormode *color)
 278 {
 279         bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
 280         {
 281                 return f1->length == f2->length &&
 282                         f1->offset == f2->offset &&
 283                         f1->msb_right == f2->msb_right;
 284         }
 285
 286         if (var->bits_per_pixel == 0 ||
 287                         var->red.length == 0 ||
 288                         var->blue.length == 0 ||
 289                         var->green.length == 0)
 290                 return 0;
 291
 292         return var->bits_per_pixel == color->bits_per_pixel &&
 293                 cmp_component(&var->red, &color->red) &&
 294                 cmp_component(&var->green, &color->green) &&
 295                 cmp_component(&var->blue, &color->blue) &&
 296                 cmp_component(&var->transp, &color->transp);
 297 }
 298
 299 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
 300                 struct omapfb_colormode *color)
 301 {
 302         var->bits_per_pixel = color->bits_per_pixel;
 303         var->nonstd = color->nonstd;
 304         var->red = color->red;
 305         var->green = color->green;
 306         var->blue = color->blue;
 307         var->transp = color->transp;
 308 }
 309
 310 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
 311                 enum omap_color_mode *mode)
 312 {
 313         enum omap_color_mode dssmode;
 314         int i;
 315
 316         /* first match with nonstd field */
 317         if (var->nonstd) {
 318                 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 319                         struct omapfb_colormode *m = &omapfb_colormodes[i];
 320                         if (var->nonstd == m->nonstd) {
 321                                 assign_colormode_to_var(var, m);
 322                                 *mode = m->dssmode;
 323                                 return 0;
 324                         }
 325                 }
 326
 327                 return -EINVAL;
 328         }
 329
 330         /* then try exact match of bpp and colors */
 331         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 332                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 333                 if (cmp_var_to_colormode(var, m)) {
 334                         assign_colormode_to_var(var, m);
 335                         *mode = m->dssmode;
 336                         return 0;
 337                 }
 338         }
 339
 340         /* match with bpp if user has not filled color fields
 341          * properly */
 342         switch (var->bits_per_pixel) {
 343         case 1:
 344                 dssmode = OMAP_DSS_COLOR_CLUT1;
 345                 break;
 346         case 2:
 347                 dssmode = OMAP_DSS_COLOR_CLUT2;
 348                 break;
 349         case 4:
 350                 dssmode = OMAP_DSS_COLOR_CLUT4;
 351                 break;
 352         case 8:
 353                 dssmode = OMAP_DSS_COLOR_CLUT8;
 354                 break;
 355         case 12:
 356                 dssmode = OMAP_DSS_COLOR_RGB12U;
 357                 break;
 358         case 16:
 359                 dssmode = OMAP_DSS_COLOR_RGB16;
 360                 break;
 361         case 24:
 362                 dssmode = OMAP_DSS_COLOR_RGB24P;
 363                 break;
 364         case 32:
 365                 dssmode = OMAP_DSS_COLOR_RGB24U;
 366                 break;
 367         default:
 368                 return -EINVAL;
 369         }
 370
 371         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 372                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 373                 if (dssmode == m->dssmode) {
 374                         assign_colormode_to_var(var, m);
 375                         *mode = m->dssmode;
 376                         return 0;
 377                 }
 378         }
 379
 380         return -EINVAL;
 381 }
 382
 383 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
 384 {
 385         int xres_min = OMAPFB_PLANE_XRES_MIN;
 386         int xres_max = 2048;
 387         int yres_min = OMAPFB_PLANE_YRES_MIN;
 388         int yres_max = 2048;
 389
 390         /* XXX: some applications seem to set virtual res to 0. */
 391         if (var->xres_virtual == 0)
 392                 var->xres_virtual = var->xres;
 393
 394         if (var->yres_virtual == 0)
 395                 var->yres_virtual = var->yres;
 396
 397         if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
 398                 return -EINVAL;
 399
 400         if (var->xres < xres_min)
 401                 var->xres = xres_min;
 402         if (var->yres < yres_min)
 403                 var->yres = yres_min;
 404         if (var->xres > xres_max)
 405                 var->xres = xres_max;
 406         if (var->yres > yres_max)
 407                 var->yres = yres_max;
 408
 409         if (var->xres > var->xres_virtual)
 410                 var->xres = var->xres_virtual;
 411         if (var->yres > var->yres_virtual)
 412                 var->yres = var->yres_virtual;
 413
 414         return 0;
 415 }
 416
 417 static void shrink_height(unsigned long max_frame_size,
 418                 struct fb_var_screeninfo *var)
 419 {
 420         DBG("can't fit FB into memory, reducing y\n");
 421         var->yres_virtual = max_frame_size /
 422                 (var->xres_virtual * var->bits_per_pixel >> 3);
 423
 424         if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
 425                 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
 426
 427         if (var->yres > var->yres_virtual)
 428                 var->yres = var->yres_virtual;
 429 }
 430
 431 static void shrink_width(unsigned long max_frame_size,
 432                 struct fb_var_screeninfo *var)
 433 {
 434         DBG("can't fit FB into memory, reducing x\n");
 435         var->xres_virtual = max_frame_size / var->yres_virtual /
 436                 (var->bits_per_pixel >> 3);
 437
 438         if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
 439                 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
 440
 441         if (var->xres > var->xres_virtual)
 442                 var->xres = var->xres_virtual;
 443 }
 444
 445 static int check_vrfb_fb_size(unsigned long region_size,
 446                 const struct fb_var_screeninfo *var)
 447 {
 448         unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
 449                 var->yres_virtual, var->bits_per_pixel >> 3);
 450
 451         return min_phys_size > region_size ? -EINVAL : 0;
 452 }
 453
 454 static int check_fb_size(const struct omapfb_info *ofbi,
 455                 struct fb_var_screeninfo *var)
 456 {
 457         unsigned long max_frame_size = ofbi->region->size;
 458         int bytespp = var->bits_per_pixel >> 3;
 459         unsigned long line_size = var->xres_virtual * bytespp;
 460
 461         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 462                 /* One needs to check for both VRFB and OMAPFB limitations. */
 463                 if (check_vrfb_fb_size(max_frame_size, var))
 464                         shrink_height(omap_vrfb_max_height(
 465                                 max_frame_size, var->xres_virtual, bytespp) *
 466                                 line_size, var);
 467
 468                 if (check_vrfb_fb_size(max_frame_size, var)) {
 469                         DBG("cannot fit FB to memory\n");
 470                         return -EINVAL;
 471                 }
 472
 473                 return 0;
 474         }
 475
 476         DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
 477
 478         if (line_size * var->yres_virtual > max_frame_size)
 479                 shrink_height(max_frame_size, var);
 480
 481         if (line_size * var->yres_virtual > max_frame_size) {
 482                 shrink_width(max_frame_size, var);
 483                 line_size = var->xres_virtual * bytespp;
 484         }
 485
 486         if (line_size * var->yres_virtual > max_frame_size) {
 487                 DBG("cannot fit FB to memory\n");
 488                 return -EINVAL;
 489         }
 490
 491         return 0;
 492 }
 493
 494 /*
 495  * Consider if VRFB assisted rotation is in use and if the virtual space for
 496  * the zero degree view needs to be mapped. The need for mapping also acts as
 497  * the trigger for setting up the hardware on the context in question. This
 498  * ensures that one does not attempt to access the virtual view before the
 499  * hardware is serving the address translations.
 500  */
 501 static int setup_vrfb_rotation(struct fb_info *fbi)
 502 {
 503         struct omapfb_info *ofbi = FB2OFB(fbi);
 504         struct omapfb2_mem_region *rg = ofbi->region;
 505         struct vrfb *vrfb = &rg->vrfb;
 506         struct fb_var_screeninfo *var = &fbi->var;
 507         struct fb_fix_screeninfo *fix = &fbi->fix;
 508         unsigned bytespp;
 509         bool yuv_mode;
 510         enum omap_color_mode mode;
 511         int r;
 512         bool reconf;
 513
 514         if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
 515                 return 0;
 516
 517         DBG("setup_vrfb_rotation\n");
 518
 519         r = fb_mode_to_dss_mode(var, &mode);
 520         if (r)
 521                 return r;
 522
 523         bytespp = var->bits_per_pixel >> 3;
 524
 525         yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
 526
 527         /* We need to reconfigure VRFB if the resolution changes, if yuv mode
 528          * is enabled/disabled, or if bytes per pixel changes */
 529
 530         /* XXX we shouldn't allow this when framebuffer is mmapped */
 531
 532         reconf = false;
 533
 534         if (yuv_mode != vrfb->yuv_mode)
 535                 reconf = true;
 536         else if (bytespp != vrfb->bytespp)
 537                 reconf = true;
 538         else if (vrfb->xres != var->xres_virtual ||
 539                         vrfb->yres != var->yres_virtual)
 540                 reconf = true;
 541
 542         if (vrfb->vaddr[0] && reconf) {
 543                 fbi->screen_base = NULL;
 544                 fix->smem_start = 0;
 545                 fix->smem_len = 0;
 546                 iounmap(vrfb->vaddr[0]);
 547                 vrfb->vaddr[0] = NULL;
 548                 DBG("setup_vrfb_rotation: reset fb\n");
 549         }
 550
 551         if (vrfb->vaddr[0])
 552                 return 0;
 553
 554         omap_vrfb_setup(&rg->vrfb, rg->paddr,
 555                         var->xres_virtual,
 556                         var->yres_virtual,
 557                         bytespp, yuv_mode);
 558
 559         /* Now one can ioremap the 0 angle view */
 560         r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
 561         if (r)
 562                 return r;
 563
 564         /* used by open/write in fbmem.c */
 565         fbi->screen_base = ofbi->region->vrfb.vaddr[0];
 566
 567         fix->smem_start = ofbi->region->vrfb.paddr[0];
 568
 569         switch (var->nonstd) {
 570         case OMAPFB_COLOR_YUV422:
 571         case OMAPFB_COLOR_YUY422:
 572                 fix->line_length =
 573                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 574                 break;
 575         default:
 576                 fix->line_length =
 577                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 578                 break;
 579         }
 580
 581         fix->smem_len = var->yres_virtual * fix->line_length;
 582
 583         return 0;
 584 }
 585
 586 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
 587                         struct fb_var_screeninfo *var)
 588 {
 589         int i;
 590
 591         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 592                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 593                 if (dssmode == mode->dssmode) {
 594                         assign_colormode_to_var(var, mode);
 595                         return 0;
 596                 }
 597         }
 598         return -ENOENT;
 599 }
 600
 601 void set_fb_fix(struct fb_info *fbi)
 602 {
 603         struct fb_fix_screeninfo *fix = &fbi->fix;
 604         struct fb_var_screeninfo *var = &fbi->var;
 605         struct omapfb_info *ofbi = FB2OFB(fbi);
 606         struct omapfb2_mem_region *rg = ofbi->region;
 607
 608         DBG("set_fb_fix\n");
 609
 610         /* used by open/write in fbmem.c */
 611         fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
 612
 613         /* used by mmap in fbmem.c */
 614         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 615                 switch (var->nonstd) {
 616                 case OMAPFB_COLOR_YUV422:
 617                 case OMAPFB_COLOR_YUY422:
 618                         fix->line_length =
 619                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 620                         break;
 621                 default:
 622                         fix->line_length =
 623                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 624                         break;
 625                 }
 626
 627                 fix->smem_len = var->yres_virtual * fix->line_length;
 628         } else {
 629                 fix->line_length =
 630                         (var->xres_virtual * var->bits_per_pixel) >> 3;
 631                 fix->smem_len = rg->size;
 632         }
 633
 634         fix->smem_start = omapfb_get_region_paddr(ofbi);
 635
 636         fix->type = FB_TYPE_PACKED_PIXELS;
 637
 638         if (var->nonstd)
 639                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 640         else {
 641                 switch (var->bits_per_pixel) {
 642                 case 32:
 643                 case 24:
 644                 case 16:
 645                 case 12:
 646                         fix->visual = FB_VISUAL_TRUECOLOR;
 647                         /* 12bpp is stored in 16 bits */
 648                         break;
 649                 case 1:
 650                 case 2:
 651                 case 4:
 652                 case 8:
 653                         fix->visual = FB_VISUAL_PSEUDOCOLOR;
 654                         break;
 655                 }
 656         }
 657
 658         fix->accel = FB_ACCEL_NONE;
 659
 660         fix->xpanstep = 1;
 661         fix->ypanstep = 1;
 662 }
 663
 664 /* check new var and possibly modify it to be ok */
 665 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 666 {
 667         struct omapfb_info *ofbi = FB2OFB(fbi);
 668         struct omap_dss_device *display = fb2display(fbi);
 669         enum omap_color_mode mode = 0;
 670         int i;
 671         int r;
 672
 673         DBG("check_fb_var %d\n", ofbi->id);
 674
 675         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 676
 677         r = fb_mode_to_dss_mode(var, &mode);
 678         if (r) {
 679                 DBG("cannot convert var to omap dss mode\n");
 680                 return r;
 681         }
 682
 683         for (i = 0; i < ofbi->num_overlays; ++i) {
 684                 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
 685                         DBG("invalid mode\n");
 686                         return -EINVAL;
 687                 }
 688         }
 689
 690         if (var->rotate > 3)
 691                 return -EINVAL;
 692
 693         if (check_fb_res_bounds(var))
 694                 return -EINVAL;
 695
 696         /* When no memory is allocated ignore the size check */
 697         if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
 698                 return -EINVAL;
 699
 700         if (var->xres + var->xoffset > var->xres_virtual)
 701                 var->xoffset = var->xres_virtual - var->xres;
 702         if (var->yres + var->yoffset > var->yres_virtual)
 703                 var->yoffset = var->yres_virtual - var->yres;
 704
 705         DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
 706                         var->xres, var->yres,
 707                         var->xres_virtual, var->yres_virtual);
 708
 709         if (display && display->driver->get_dimensions) {
 710                 u32 w, h;
 711                 display->driver->get_dimensions(display, &w, &h);
 712                 var->width = DIV_ROUND_CLOSEST(w, 1000);
 713                 var->height = DIV_ROUND_CLOSEST(h, 1000);
 714         } else {
 715                 var->height = -1;
 716                 var->width = -1;
 717         }
 718
 719         var->grayscale          = 0;
 720
 721         if (display && display->driver->get_timings) {
 722                 struct omap_video_timings timings;
 723                 display->driver->get_timings(display, &timings);
 724
 725                 /* pixclock in ps, the rest in pixclock */
 726                 var->pixclock = timings.pixel_clock != 0 ?
 727                         KHZ2PICOS(timings.pixel_clock) :
 728                         0;
 729                 var->left_margin = timings.hbp;
 730                 var->right_margin = timings.hfp;
 731                 var->upper_margin = timings.vbp;
 732                 var->lower_margin = timings.vfp;
 733                 var->hsync_len = timings.hsw;
 734                 var->vsync_len = timings.vsw;
 735         } else {
 736                 var->pixclock = 0;
 737                 var->left_margin = 0;
 738                 var->right_margin = 0;
 739                 var->upper_margin = 0;
 740                 var->lower_margin = 0;
 741                 var->hsync_len = 0;
 742                 var->vsync_len = 0;
 743         }
 744
 745         /* TODO: get these from panel->config */
 746         var->vmode              = FB_VMODE_NONINTERLACED;
 747         var->sync               = 0;
 748
 749         return 0;
 750 }
 751
 752 /*
 753  * ---------------------------------------------------------------------------
 754  * fbdev framework callbacks
 755  * ---------------------------------------------------------------------------
 756  */
 757 static int omapfb_open(struct fb_info *fbi, int user)
 758 {
 759         return 0;
 760 }
 761
 762 static int omapfb_release(struct fb_info *fbi, int user)
 763 {
 764         return 0;
 765 }
 766
 767 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
 768                 const struct fb_fix_screeninfo *fix, int rotation)
 769 {
 770         unsigned offset;
 771
 772         offset = var->yoffset * fix->line_length +
 773                 var->xoffset * (var->bits_per_pixel >> 3);
 774
 775         return offset;
 776 }
 777
 778 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
 779                 const struct fb_fix_screeninfo *fix, int rotation)
 780 {
 781         unsigned offset;
 782
 783         if (rotation == FB_ROTATE_UD)
 784                 offset = (var->yres_virtual - var->yres) *
 785                         fix->line_length;
 786         else if (rotation == FB_ROTATE_CW)
 787                 offset = (var->yres_virtual - var->yres) *
 788                         (var->bits_per_pixel >> 3);
 789         else
 790                 offset = 0;
 791
 792         if (rotation == FB_ROTATE_UR)
 793                 offset += var->yoffset * fix->line_length +
 794                         var->xoffset * (var->bits_per_pixel >> 3);
 795         else if (rotation == FB_ROTATE_UD)
 796                 offset -= var->yoffset * fix->line_length +
 797                         var->xoffset * (var->bits_per_pixel >> 3);
 798         else if (rotation == FB_ROTATE_CW)
 799                 offset -= var->xoffset * fix->line_length +
 800                         var->yoffset * (var->bits_per_pixel >> 3);
 801         else if (rotation == FB_ROTATE_CCW)
 802                 offset += var->xoffset * fix->line_length +
 803                         var->yoffset * (var->bits_per_pixel >> 3);
 804
 805         return offset;
 806 }
 807
 808 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
 809                              const struct fb_var_screeninfo *var,
 810                              const struct fb_fix_screeninfo *fix,
 811                              int rotation, u32 *paddr, void __iomem **vaddr)
 812 {
 813         u32 data_start_p;
 814         void __iomem *data_start_v;
 815         int offset;
 816
 817         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 818                 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
 819                 data_start_v = NULL;
 820         } else {
 821                 data_start_p = omapfb_get_region_paddr(ofbi);
 822                 data_start_v = omapfb_get_region_vaddr(ofbi);
 823         }
 824
 825         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 826                 offset = calc_rotation_offset_vrfb(var, fix, rotation);
 827         else
 828                 offset = calc_rotation_offset_dma(var, fix, rotation);
 829
 830         data_start_p += offset;
 831         data_start_v += offset;
 832
 833         if (offset)
 834                 DBG("offset %d, %d = %d\n",
 835                     var->xoffset, var->yoffset, offset);
 836
 837         DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
 838
 839         *paddr = data_start_p;
 840         *vaddr = data_start_v;
 841 }
 842
 843 /* setup overlay according to the fb */
 844 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 845                 u16 posx, u16 posy, u16 outw, u16 outh)
 846 {
 847         int r = 0;
 848         struct omapfb_info *ofbi = FB2OFB(fbi);
 849         struct fb_var_screeninfo *var = &fbi->var;
 850         struct fb_fix_screeninfo *fix = &fbi->fix;
 851         enum omap_color_mode mode = 0;
 852         u32 data_start_p = 0;
 853         void __iomem *data_start_v = NULL;
 854         struct omap_overlay_info info;
 855         int xres, yres;
 856         int screen_width;
 857         int mirror;
 858         int rotation = var->rotate;
 859         int i;
 860
 861         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 862
 863         for (i = 0; i < ofbi->num_overlays; i++) {
 864                 if (ovl != ofbi->overlays[i])
 865                         continue;
 866
 867                 rotation = (rotation + ofbi->rotation[i]) % 4;
 868                 break;
 869         }
 870
 871         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 872                         posx, posy, outw, outh);
 873
 874         if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
 875                 xres = var->yres;
 876                 yres = var->xres;
 877         } else {
 878                 xres = var->xres;
 879                 yres = var->yres;
 880         }
 881
 882         if (ofbi->region->size)
 883                 omapfb_calc_addr(ofbi, var, fix, rotation,
 884                                  &data_start_p, &data_start_v);
 885
 886         r = fb_mode_to_dss_mode(var, &mode);
 887         if (r) {
 888                 DBG("fb_mode_to_dss_mode failed");
 889                 goto err;
 890         }
 891
 892         switch (var->nonstd) {
 893         case OMAPFB_COLOR_YUV422:
 894         case OMAPFB_COLOR_YUY422:
 895                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 896                         screen_width = fix->line_length
 897                                 / (var->bits_per_pixel >> 2);
 898                         break;
 899                 }
 900         default:
 901                 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 902                 break;
 903         }
 904
 905         ovl->get_overlay_info(ovl, &info);
 906
 907         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 908                 mirror = 0;
 909         else
 910                 mirror = ofbi->mirror;
 911
 912         info.paddr = data_start_p;
 913         info.vaddr = data_start_v;
 914         info.screen_width = screen_width;
 915         info.width = xres;
 916         info.height = yres;
 917         info.color_mode = mode;
 918         info.rotation_type = ofbi->rotation_type;
 919         info.rotation = rotation;
 920         info.mirror = mirror;
 921
 922         info.pos_x = posx;
 923         info.pos_y = posy;
 924         info.out_width = outw;
 925         info.out_height = outh;
 926
 927         r = ovl->set_overlay_info(ovl, &info);
 928         if (r) {
 929                 DBG("ovl->setup_overlay_info failed\n");
 930                 goto err;
 931         }
 932
 933         return 0;
 934
 935 err:
 936         DBG("setup_overlay failed\n");
 937         return r;
 938 }
 939
 940 /* apply var to the overlay */
 941 int omapfb_apply_changes(struct fb_info *fbi, int init)
 942 {
 943         int r = 0;
 944         struct omapfb_info *ofbi = FB2OFB(fbi);
 945         struct fb_var_screeninfo *var = &fbi->var;
 946         struct omap_overlay *ovl;
 947         u16 posx, posy;
 948         u16 outw, outh;
 949         int i;
 950
 951 #ifdef DEBUG
 952         if (omapfb_test_pattern)
 953                 fill_fb(fbi);
 954 #endif
 955
 956         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 957
 958         for (i = 0; i < ofbi->num_overlays; i++) {
 959                 ovl = ofbi->overlays[i];
 960
 961                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 962
 963                 if (ofbi->region->size == 0) {
 964                         /* the fb is not available. disable the overlay */
 965                         omapfb_overlay_enable(ovl, 0);
 966                         if (!init && ovl->manager)
 967                                 ovl->manager->apply(ovl->manager);
 968                         continue;
 969                 }
 970
 971                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 972                         int rotation = (var->rotate + ofbi->rotation[i]) % 4;
 973                         if (rotation == FB_ROTATE_CW ||
 974                                         rotation == FB_ROTATE_CCW) {
 975                                 outw = var->yres;
 976                                 outh = var->xres;
 977                         } else {
 978                                 outw = var->xres;
 979                                 outh = var->yres;
 980                         }
 981                 } else {
 982                         outw = ovl->info.out_width;
 983                         outh = ovl->info.out_height;
 984                 }
 985
 986                 if (init) {
 987                         posx = 0;
 988                         posy = 0;
 989                 } else {
 990                         posx = ovl->info.pos_x;
 991                         posy = ovl->info.pos_y;
 992                 }
 993
 994                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
 995                 if (r)
 996                         goto err;
 997
 998                 if (!init && ovl->manager)
 999                         ovl->manager->apply(ovl->manager);
1000         }
1001         return 0;
1002 err:
1003         DBG("apply_changes failed\n");
1004         return r;
1005 }
1006
1007 /* checks var and eventually tweaks it to something supported,
1008  * DO NOT MODIFY PAR */
1009 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1010 {
1011         struct omapfb_info *ofbi = FB2OFB(fbi);
1012         int r;
1013
1014         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1015
1016         omapfb_get_mem_region(ofbi->region);
1017
1018         r = check_fb_var(fbi, var);
1019
1020         omapfb_put_mem_region(ofbi->region);
1021
1022         return r;
1023 }
1024
1025 /* set the video mode according to info->var */
1026 static int omapfb_set_par(struct fb_info *fbi)
1027 {
1028         struct omapfb_info *ofbi = FB2OFB(fbi);
1029         int r;
1030
1031         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1032
1033         omapfb_get_mem_region(ofbi->region);
1034
1035         set_fb_fix(fbi);
1036
1037         r = setup_vrfb_rotation(fbi);
1038         if (r)
1039                 goto out;
1040
1041         r = omapfb_apply_changes(fbi, 0);
1042
1043  out:
1044         omapfb_put_mem_region(ofbi->region);
1045
1046         return r;
1047 }
1048
1049 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1050                 struct fb_info *fbi)
1051 {
1052         struct omapfb_info *ofbi = FB2OFB(fbi);
1053         struct fb_var_screeninfo new_var;
1054         int r;
1055
1056         DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1057
1058         if (var->xoffset == fbi->var.xoffset &&
1059             var->yoffset == fbi->var.yoffset)
1060                 return 0;
1061
1062         new_var = fbi->var;
1063         new_var.xoffset = var->xoffset;
1064         new_var.yoffset = var->yoffset;
1065
1066         fbi->var = new_var;
1067
1068         omapfb_get_mem_region(ofbi->region);
1069
1070         r = omapfb_apply_changes(fbi, 0);
1071
1072         omapfb_put_mem_region(ofbi->region);
1073
1074         return r;
1075 }
1076
1077 static void mmap_user_open(struct vm_area_struct *vma)
1078 {
1079         struct omapfb2_mem_region *rg = vma->vm_private_data;
1080
1081         omapfb_get_mem_region(rg);
1082         atomic_inc(&rg->map_count);
1083         omapfb_put_mem_region(rg);
1084 }
1085
1086 static void mmap_user_close(struct vm_area_struct *vma)
1087 {
1088         struct omapfb2_mem_region *rg = vma->vm_private_data;
1089
1090         omapfb_get_mem_region(rg);
1091         atomic_dec(&rg->map_count);
1092         omapfb_put_mem_region(rg);
1093 }
1094
1095 static struct vm_operations_struct mmap_user_ops = {
1096         .open = mmap_user_open,
1097         .close = mmap_user_close,
1098 };
1099
1100 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1101 {
1102         struct omapfb_info *ofbi = FB2OFB(fbi);
1103         struct fb_fix_screeninfo *fix = &fbi->fix;
1104         struct omapfb2_mem_region *rg;
1105         unsigned long off;
1106         unsigned long start;
1107         u32 len;
1108         int r = -EINVAL;
1109
1110         if (vma->vm_end - vma->vm_start == 0)
1111                 return 0;
1112         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1113                 return -EINVAL;
1114         off = vma->vm_pgoff << PAGE_SHIFT;
1115
1116         rg = omapfb_get_mem_region(ofbi->region);
1117
1118         start = omapfb_get_region_paddr(ofbi);
1119         len = fix->smem_len;
1120         if (off >= len)
1121                 goto error;
1122         if ((vma->vm_end - vma->vm_start + off) > len)
1123                 goto error;
1124
1125         off += start;
1126
1127         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1128
1129         vma->vm_pgoff = off >> PAGE_SHIFT;
1130         vma->vm_flags |= VM_IO | VM_RESERVED;
1131         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1132         vma->vm_ops = &mmap_user_ops;
1133         vma->vm_private_data = rg;
1134         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1135                                vma->vm_end - vma->vm_start,
1136                                vma->vm_page_prot)) {
1137                 r = -EAGAIN;
1138                 goto error;
1139         }
1140
1141         /* vm_ops.open won't be called for mmap itself. */
1142         atomic_inc(&rg->map_count);
1143
1144         omapfb_put_mem_region(rg);
1145
1146         return 0;
1147
1148  error:
1149         omapfb_put_mem_region(ofbi->region);
1150
1151         return r;
1152 }
1153
1154 /* Store a single color palette entry into a pseudo palette or the hardware
1155  * palette if one is available. For now we support only 16bpp and thus store
1156  * the entry only to the pseudo palette.
1157  */
1158 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1159                 u_int blue, u_int transp, int update_hw_pal)
1160 {
1161         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1162         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1163         struct fb_var_screeninfo *var = &fbi->var;
1164         int r = 0;
1165
1166         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1167
1168         /*switch (plane->color_mode) {*/
1169         switch (mode) {
1170         case OMAPFB_COLOR_YUV422:
1171         case OMAPFB_COLOR_YUV420:
1172         case OMAPFB_COLOR_YUY422:
1173                 r = -EINVAL;
1174                 break;
1175         case OMAPFB_COLOR_CLUT_8BPP:
1176         case OMAPFB_COLOR_CLUT_4BPP:
1177         case OMAPFB_COLOR_CLUT_2BPP:
1178         case OMAPFB_COLOR_CLUT_1BPP:
1179                 /*
1180                    if (fbdev->ctrl->setcolreg)
1181                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1182                    transp, update_hw_pal);
1183                    */
1184                 /* Fallthrough */
1185                 r = -EINVAL;
1186                 break;
1187         case OMAPFB_COLOR_RGB565:
1188         case OMAPFB_COLOR_RGB444:
1189         case OMAPFB_COLOR_RGB24P:
1190         case OMAPFB_COLOR_RGB24U:
1191                 if (r != 0)
1192                         break;
1193
1194                 if (regno < 16) {
1195                         u16 pal;
1196                         pal = ((red >> (16 - var->red.length)) <<
1197                                         var->red.offset) |
1198                                 ((green >> (16 - var->green.length)) <<
1199                                  var->green.offset) |
1200                                 (blue >> (16 - var->blue.length));
1201                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1202                 }
1203                 break;
1204         default:
1205                 BUG();
1206         }
1207         return r;
1208 }
1209
1210 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1211                 u_int transp, struct fb_info *info)
1212 {
1213         DBG("setcolreg\n");
1214
1215         return _setcolreg(info, regno, red, green, blue, transp, 1);
1216 }
1217
1218 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1219 {
1220         int count, index, r;
1221         u16 *red, *green, *blue, *transp;
1222         u16 trans = 0xffff;
1223
1224         DBG("setcmap\n");
1225
1226         red     = cmap->red;
1227         green   = cmap->green;
1228         blue    = cmap->blue;
1229         transp  = cmap->transp;
1230         index   = cmap->start;
1231
1232         for (count = 0; count < cmap->len; count++) {
1233                 if (transp)
1234                         trans = *transp++;
1235                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1236                                 count == cmap->len - 1);
1237                 if (r != 0)
1238                         return r;
1239         }
1240
1241         return 0;
1242 }
1243
1244 static int omapfb_blank(int blank, struct fb_info *fbi)
1245 {
1246         struct omapfb_info *ofbi = FB2OFB(fbi);
1247         struct omapfb2_device *fbdev = ofbi->fbdev;
1248         struct omap_dss_device *display = fb2display(fbi);
1249         struct omapfb_display_data *d;
1250         int r = 0;
1251
1252         if (!display)
1253                 return -EINVAL;
1254
1255         omapfb_lock(fbdev);
1256
1257         d = get_display_data(fbdev, display);
1258
1259         switch (blank) {
1260         case FB_BLANK_UNBLANK:
1261                 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1262                         goto exit;
1263
1264                 if (display->driver->resume)
1265                         r = display->driver->resume(display);
1266
1267                 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1268                                 d->update_mode == OMAPFB_AUTO_UPDATE &&
1269                                 !d->auto_update_work_enabled)
1270                         omapfb_start_auto_update(fbdev, display);
1271
1272                 break;
1273
1274         case FB_BLANK_NORMAL:
1275                 /* FB_BLANK_NORMAL could be implemented.
1276                  * Needs DSS additions. */
1277         case FB_BLANK_VSYNC_SUSPEND:
1278         case FB_BLANK_HSYNC_SUSPEND:
1279         case FB_BLANK_POWERDOWN:
1280                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1281                         goto exit;
1282
1283                 if (d->auto_update_work_enabled)
1284                         omapfb_stop_auto_update(fbdev, display);
1285
1286                 if (display->driver->suspend)
1287                         r = display->driver->suspend(display);
1288
1289                 break;
1290
1291         default:
1292                 r = -EINVAL;
1293         }
1294
1295 exit:
1296         omapfb_unlock(fbdev);
1297
1298         return r;
1299 }
1300
1301 #if 0
1302 /* XXX fb_read and fb_write are needed for VRFB */
1303 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1304                 size_t count, loff_t *ppos)
1305 {
1306         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1307         /* XXX needed for VRFB */
1308         return count;
1309 }
1310 #endif
1311
1312 static struct fb_ops omapfb_ops = {
1313         .owner          = THIS_MODULE,
1314         .fb_open        = omapfb_open,
1315         .fb_release     = omapfb_release,
1316         .fb_fillrect    = cfb_fillrect,
1317         .fb_copyarea    = cfb_copyarea,
1318         .fb_imageblit   = cfb_imageblit,
1319         .fb_blank       = omapfb_blank,
1320         .fb_ioctl       = omapfb_ioctl,
1321         .fb_check_var   = omapfb_check_var,
1322         .fb_set_par     = omapfb_set_par,
1323         .fb_pan_display = omapfb_pan_display,
1324         .fb_mmap        = omapfb_mmap,
1325         .fb_setcolreg   = omapfb_setcolreg,
1326         .fb_setcmap     = omapfb_setcmap,
1327         /*.fb_write     = omapfb_write,*/
1328 };
1329
1330 static void omapfb_free_fbmem(struct fb_info *fbi)
1331 {
1332         struct omapfb_info *ofbi = FB2OFB(fbi);
1333         struct omapfb2_device *fbdev = ofbi->fbdev;
1334         struct omapfb2_mem_region *rg;
1335
1336         rg = ofbi->region;
1337
1338         WARN_ON(atomic_read(&rg->map_count));
1339
1340         if (rg->paddr)
1341                 if (omap_vram_free(rg->paddr, rg->size))
1342                         dev_err(fbdev->dev, "VRAM FREE failed\n");
1343
1344         if (rg->vaddr)
1345                 iounmap(rg->vaddr);
1346
1347         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1348                 /* unmap the 0 angle rotation */
1349                 if (rg->vrfb.vaddr[0]) {
1350                         iounmap(rg->vrfb.vaddr[0]);
1351                         omap_vrfb_release_ctx(&rg->vrfb);
1352                         rg->vrfb.vaddr[0] = NULL;
1353                 }
1354         }
1355
1356         rg->vaddr = NULL;
1357         rg->paddr = 0;
1358         rg->alloc = 0;
1359         rg->size = 0;
1360 }
1361
1362 static void clear_fb_info(struct fb_info *fbi)
1363 {
1364         memset(&fbi->var, 0, sizeof(fbi->var));
1365         memset(&fbi->fix, 0, sizeof(fbi->fix));
1366         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1367 }
1368
1369 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1370 {
1371         int i;
1372
1373         DBG("free all fbmem\n");
1374
1375         for (i = 0; i < fbdev->num_fbs; i++) {
1376                 struct fb_info *fbi = fbdev->fbs[i];
1377                 omapfb_free_fbmem(fbi);
1378                 clear_fb_info(fbi);
1379         }
1380
1381         return 0;
1382 }
1383
1384 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1385                 unsigned long paddr)
1386 {
1387         struct omapfb_info *ofbi = FB2OFB(fbi);
1388         struct omapfb2_device *fbdev = ofbi->fbdev;
1389         struct omapfb2_mem_region *rg;
1390         void __iomem *vaddr;
1391         int r;
1392
1393         rg = ofbi->region;
1394
1395         rg->paddr = 0;
1396         rg->vaddr = NULL;
1397         memset(&rg->vrfb, 0, sizeof rg->vrfb);
1398         rg->size = 0;
1399         rg->type = 0;
1400         rg->alloc = false;
1401         rg->map = false;
1402
1403         size = PAGE_ALIGN(size);
1404
1405         if (!paddr) {
1406                 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1407                 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1408         } else {
1409                 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1410                                 ofbi->id);
1411                 r = omap_vram_reserve(paddr, size);
1412         }
1413
1414         if (r) {
1415                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1416                 return -ENOMEM;
1417         }
1418
1419         if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1420                 vaddr = ioremap_wc(paddr, size);
1421
1422                 if (!vaddr) {
1423                         dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1424                         omap_vram_free(paddr, size);
1425                         return -ENOMEM;
1426                 }
1427
1428                 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1429         } else {
1430                 r = omap_vrfb_request_ctx(&rg->vrfb);
1431                 if (r) {
1432                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1433                         return r;
1434                 }
1435
1436                 vaddr = NULL;
1437         }
1438
1439         rg->paddr = paddr;
1440         rg->vaddr = vaddr;
1441         rg->size = size;
1442         rg->alloc = 1;
1443
1444         return 0;
1445 }
1446
1447 /* allocate fbmem using display resolution as reference */
1448 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1449                 unsigned long paddr)
1450 {
1451         struct omapfb_info *ofbi = FB2OFB(fbi);
1452         struct omapfb2_device *fbdev = ofbi->fbdev;
1453         struct omap_dss_device *display;
1454         int bytespp;
1455
1456         display =  fb2display(fbi);
1457
1458         if (!display)
1459                 return 0;
1460
1461         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1462         case 16:
1463                 bytespp = 2;
1464                 break;
1465         case 24:
1466                 bytespp = 4;
1467                 break;
1468         default:
1469                 bytespp = 4;
1470                 break;
1471         }
1472
1473         if (!size) {
1474                 u16 w, h;
1475
1476                 display->driver->get_resolution(display, &w, &h);
1477
1478                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1479                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1480                                         omap_vrfb_min_phys_size(h, w, bytespp));
1481
1482                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1483                                         w * h * bytespp, size);
1484                 } else {
1485                         size = w * h * bytespp;
1486                 }
1487         }
1488
1489         if (!size)
1490                 return 0;
1491
1492         return omapfb_alloc_fbmem(fbi, size, paddr);
1493 }
1494
1495 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1496 {
1497         enum omap_color_mode mode;
1498
1499         switch (fmt) {
1500         case OMAPFB_COLOR_RGB565:
1501                 mode = OMAP_DSS_COLOR_RGB16;
1502                 break;
1503         case OMAPFB_COLOR_YUV422:
1504                 mode = OMAP_DSS_COLOR_YUV2;
1505                 break;
1506         case OMAPFB_COLOR_CLUT_8BPP:
1507                 mode = OMAP_DSS_COLOR_CLUT8;
1508                 break;
1509         case OMAPFB_COLOR_CLUT_4BPP:
1510                 mode = OMAP_DSS_COLOR_CLUT4;
1511                 break;
1512         case OMAPFB_COLOR_CLUT_2BPP:
1513                 mode = OMAP_DSS_COLOR_CLUT2;
1514                 break;
1515         case OMAPFB_COLOR_CLUT_1BPP:
1516                 mode = OMAP_DSS_COLOR_CLUT1;
1517                 break;
1518         case OMAPFB_COLOR_RGB444:
1519                 mode = OMAP_DSS_COLOR_RGB12U;
1520                 break;
1521         case OMAPFB_COLOR_YUY422:
1522                 mode = OMAP_DSS_COLOR_UYVY;
1523                 break;
1524         case OMAPFB_COLOR_ARGB16:
1525                 mode = OMAP_DSS_COLOR_ARGB16;
1526                 break;
1527         case OMAPFB_COLOR_RGB24U:
1528                 mode = OMAP_DSS_COLOR_RGB24U;
1529                 break;
1530         case OMAPFB_COLOR_RGB24P:
1531                 mode = OMAP_DSS_COLOR_RGB24P;
1532                 break;
1533         case OMAPFB_COLOR_ARGB32:
1534                 mode = OMAP_DSS_COLOR_ARGB32;
1535                 break;
1536         case OMAPFB_COLOR_RGBA32:
1537                 mode = OMAP_DSS_COLOR_RGBA32;
1538                 break;
1539         case OMAPFB_COLOR_RGBX32:
1540                 mode = OMAP_DSS_COLOR_RGBX32;
1541                 break;
1542         default:
1543                 mode = -EINVAL;
1544         }
1545
1546         return mode;
1547 }
1548
1549 static int omapfb_parse_vram_param(const char *param, int max_entries,
1550                 unsigned long *sizes, unsigned long *paddrs)
1551 {
1552         int fbnum;
1553         unsigned long size;
1554         unsigned long paddr = 0;
1555         char *p, *start;
1556
1557         start = (char *)param;
1558
1559         while (1) {
1560                 p = start;
1561
1562                 fbnum = simple_strtoul(p, &p, 10);
1563
1564                 if (p == param)
1565                         return -EINVAL;
1566
1567                 if (*p != ':')
1568                         return -EINVAL;
1569
1570                 if (fbnum >= max_entries)
1571                         return -EINVAL;
1572
1573                 size = memparse(p + 1, &p);
1574
1575                 if (!size)
1576                         return -EINVAL;
1577
1578                 paddr = 0;
1579
1580                 if (*p == '@') {
1581                         paddr = simple_strtoul(p + 1, &p, 16);
1582
1583                         if (!paddr)
1584                                 return -EINVAL;
1585
1586                 }
1587
1588                 paddrs[fbnum] = paddr;
1589                 sizes[fbnum] = size;
1590
1591                 if (*p == 0)
1592                         break;
1593
1594                 if (*p != ',')
1595                         return -EINVAL;
1596
1597                 ++p;
1598
1599                 start = p;
1600         }
1601
1602         return 0;
1603 }
1604
1605 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1606 {
1607         int i, r;
1608         unsigned long vram_sizes[10];
1609         unsigned long vram_paddrs[10];
1610
1611         memset(&vram_sizes, 0, sizeof(vram_sizes));
1612         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1613
1614         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1615                                 vram_sizes, vram_paddrs)) {
1616                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1617
1618                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1619                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1620         }
1621
1622         if (fbdev->dev->platform_data) {
1623                 struct omapfb_platform_data *opd;
1624                 opd = fbdev->dev->platform_data;
1625                 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1626                         if (!vram_sizes[i]) {
1627                                 unsigned long size;
1628                                 unsigned long paddr;
1629
1630                                 size = opd->mem_desc.region[i].size;
1631                                 paddr = opd->mem_desc.region[i].paddr;
1632
1633                                 vram_sizes[i] = size;
1634                                 vram_paddrs[i] = paddr;
1635                         }
1636                 }
1637         }
1638
1639         for (i = 0; i < fbdev->num_fbs; i++) {
1640                 /* allocate memory automatically only for fb0, or if
1641                  * excplicitly defined with vram or plat data option */
1642                 if (i == 0 || vram_sizes[i] != 0) {
1643                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1644                                         vram_sizes[i], vram_paddrs[i]);
1645
1646                         if (r)
1647                                 return r;
1648                 }
1649         }
1650
1651         for (i = 0; i < fbdev->num_fbs; i++) {
1652                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1653                 struct omapfb2_mem_region *rg;
1654                 rg = ofbi->region;
1655
1656                 DBG("region%d phys %08x virt %p size=%lu\n",
1657                                 i,
1658                                 rg->paddr,
1659                                 rg->vaddr,
1660                                 rg->size);
1661         }
1662
1663         return 0;
1664 }
1665
1666 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1667 {
1668         struct omapfb_info *ofbi = FB2OFB(fbi);
1669         struct omapfb2_device *fbdev = ofbi->fbdev;
1670         struct omap_dss_device *display = fb2display(fbi);
1671         struct omapfb2_mem_region *rg = ofbi->region;
1672         unsigned long old_size = rg->size;
1673         unsigned long old_paddr = rg->paddr;
1674         int old_type = rg->type;
1675         int r;
1676
1677         if (type > OMAPFB_MEMTYPE_MAX)
1678                 return -EINVAL;
1679
1680         size = PAGE_ALIGN(size);
1681
1682         if (old_size == size && old_type == type)
1683                 return 0;
1684
1685         if (display && display->driver->sync)
1686                         display->driver->sync(display);
1687
1688         omapfb_free_fbmem(fbi);
1689
1690         if (size == 0) {
1691                 clear_fb_info(fbi);
1692                 return 0;
1693         }
1694
1695         r = omapfb_alloc_fbmem(fbi, size, 0);
1696
1697         if (r) {
1698                 if (old_size)
1699                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1700
1701                 if (rg->size == 0)
1702                         clear_fb_info(fbi);
1703
1704                 return r;
1705         }
1706
1707         if (old_size == size)
1708                 return 0;
1709
1710         if (old_size == 0) {
1711                 DBG("initializing fb %d\n", ofbi->id);
1712                 r = omapfb_fb_init(fbdev, fbi);
1713                 if (r) {
1714                         DBG("omapfb_fb_init failed\n");
1715                         goto err;
1716                 }
1717                 r = omapfb_apply_changes(fbi, 1);
1718                 if (r) {
1719                         DBG("omapfb_apply_changes failed\n");
1720                         goto err;
1721                 }
1722         } else {
1723                 struct fb_var_screeninfo new_var;
1724                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1725                 r = check_fb_var(fbi, &new_var);
1726                 if (r)
1727                         goto err;
1728                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1729                 set_fb_fix(fbi);
1730                 r = setup_vrfb_rotation(fbi);
1731                 if (r)
1732                         goto err;
1733         }
1734
1735         return 0;
1736 err:
1737         omapfb_free_fbmem(fbi);
1738         clear_fb_info(fbi);
1739         return r;
1740 }
1741
1742 static void omapfb_auto_update_work(struct work_struct *work)
1743 {
1744         struct omap_dss_device *dssdev;
1745         struct omap_dss_driver *dssdrv;
1746         struct omapfb_display_data *d;
1747         u16 w, h;
1748         unsigned int freq;
1749         struct omapfb2_device *fbdev;
1750
1751         d = container_of(work, struct omapfb_display_data,
1752                         auto_update_work.work);
1753
1754         dssdev = d->dssdev;
1755         dssdrv = dssdev->driver;
1756         fbdev = d->fbdev;
1757
1758         if (!dssdrv || !dssdrv->update)
1759                 return;
1760
1761         if (dssdrv->sync)
1762                 dssdrv->sync(dssdev);
1763
1764         dssdrv->get_resolution(dssdev, &w, &h);
1765         dssdrv->update(dssdev, 0, 0, w, h);
1766
1767         freq = auto_update_freq;
1768         if (freq == 0)
1769                 freq = 20;
1770         queue_delayed_work(fbdev->auto_update_wq,
1771                         &d->auto_update_work, HZ / freq);
1772 }
1773
1774 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1775                 struct omap_dss_device *display)
1776 {
1777         struct omapfb_display_data *d;
1778
1779         if (fbdev->auto_update_wq == NULL) {
1780                 struct workqueue_struct *wq;
1781
1782                 wq = create_singlethread_workqueue("omapfb_auto_update");
1783
1784                 if (wq == NULL) {
1785                         dev_err(fbdev->dev, "Failed to create workqueue for "
1786                                         "auto-update\n");
1787                         return;
1788                 }
1789
1790                 fbdev->auto_update_wq = wq;
1791         }
1792
1793         d = get_display_data(fbdev, display);
1794
1795         INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1796
1797         d->auto_update_work_enabled = true;
1798
1799         omapfb_auto_update_work(&d->auto_update_work.work);
1800 }
1801
1802 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1803                 struct omap_dss_device *display)
1804 {
1805         struct omapfb_display_data *d;
1806
1807         d = get_display_data(fbdev, display);
1808
1809         cancel_delayed_work_sync(&d->auto_update_work);
1810
1811         d->auto_update_work_enabled = false;
1812 }
1813
1814 /* initialize fb_info, var, fix to something sane based on the display */
1815 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1816 {
1817         struct fb_var_screeninfo *var = &fbi->var;
1818         struct omap_dss_device *display = fb2display(fbi);
1819         struct omapfb_info *ofbi = FB2OFB(fbi);
1820         int r = 0;
1821
1822         fbi->fbops = &omapfb_ops;
1823         fbi->flags = FBINFO_FLAG_DEFAULT;
1824         fbi->pseudo_palette = fbdev->pseudo_palette;
1825
1826         if (ofbi->region->size == 0) {
1827                 clear_fb_info(fbi);
1828                 return 0;
1829         }
1830
1831         var->nonstd = 0;
1832         var->bits_per_pixel = 0;
1833
1834         var->rotate = def_rotate;
1835
1836         /*
1837          * Check if there is a default color format set in the board file,
1838          * and use this format instead the default deducted from the
1839          * display bpp.
1840          */
1841         if (fbdev->dev->platform_data) {
1842                 struct omapfb_platform_data *opd;
1843                 int id = ofbi->id;
1844
1845                 opd = fbdev->dev->platform_data;
1846                 if (opd->mem_desc.region[id].format_used) {
1847                         enum omap_color_mode mode;
1848                         enum omapfb_color_format format;
1849
1850                         format = opd->mem_desc.region[id].format;
1851                         mode = fb_format_to_dss_mode(format);
1852                         if (mode < 0) {
1853                                 r = mode;
1854                                 goto err;
1855                         }
1856                         r = dss_mode_to_fb_mode(mode, var);
1857                         if (r < 0)
1858                                 goto err;
1859                 }
1860         }
1861
1862         if (display) {
1863                 u16 w, h;
1864                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1865
1866                 display->driver->get_resolution(display, &w, &h);
1867
1868                 if (rotation == FB_ROTATE_CW ||
1869                                 rotation == FB_ROTATE_CCW) {
1870                         var->xres = h;
1871                         var->yres = w;
1872                 } else {
1873                         var->xres = w;
1874                         var->yres = h;
1875                 }
1876
1877                 var->xres_virtual = var->xres;
1878                 var->yres_virtual = var->yres;
1879
1880                 if (!var->bits_per_pixel) {
1881                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1882                         case 16:
1883                                 var->bits_per_pixel = 16;
1884                                 break;
1885                         case 24:
1886                                 var->bits_per_pixel = 32;
1887                                 break;
1888                         default:
1889                                 dev_err(fbdev->dev, "illegal display "
1890                                                 "bpp\n");
1891                                 return -EINVAL;
1892                         }
1893                 }
1894         } else {
1895                 /* if there's no display, let's just guess some basic values */
1896                 var->xres = 320;
1897                 var->yres = 240;
1898                 var->xres_virtual = var->xres;
1899                 var->yres_virtual = var->yres;
1900                 if (!var->bits_per_pixel)
1901                         var->bits_per_pixel = 16;
1902         }
1903
1904         r = check_fb_var(fbi, var);
1905         if (r)
1906                 goto err;
1907
1908         set_fb_fix(fbi);
1909         r = setup_vrfb_rotation(fbi);
1910         if (r)
1911                 goto err;
1912
1913         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1914         if (r)
1915                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1916
1917 err:
1918         return r;
1919 }
1920
1921 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1922 {
1923         fb_dealloc_cmap(&fbi->cmap);
1924 }
1925
1926
1927 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1928 {
1929         int i;
1930
1931         DBG("free_resources\n");
1932
1933         if (fbdev == NULL)
1934                 return;
1935
1936         for (i = 0; i < fbdev->num_fbs; i++)
1937                 unregister_framebuffer(fbdev->fbs[i]);
1938
1939         /* free the reserved fbmem */
1940         omapfb_free_all_fbmem(fbdev);
1941
1942         for (i = 0; i < fbdev->num_fbs; i++) {
1943                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1944                 framebuffer_release(fbdev->fbs[i]);
1945         }
1946
1947         for (i = 0; i < fbdev->num_displays; i++) {
1948                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1949
1950                 if (fbdev->displays[i].auto_update_work_enabled)
1951                         omapfb_stop_auto_update(fbdev, dssdev);
1952
1953                 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1954                         dssdev->driver->disable(dssdev);
1955
1956                 omap_dss_put_device(dssdev);
1957         }
1958
1959         if (fbdev->auto_update_wq != NULL) {
1960                 flush_workqueue(fbdev->auto_update_wq);
1961                 destroy_workqueue(fbdev->auto_update_wq);
1962                 fbdev->auto_update_wq = NULL;
1963         }
1964
1965         dev_set_drvdata(fbdev->dev, NULL);
1966         kfree(fbdev);
1967 }
1968
1969 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1970 {
1971         int r, i;
1972
1973         fbdev->num_fbs = 0;
1974
1975         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1976
1977         /* allocate fb_infos */
1978         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1979                 struct fb_info *fbi;
1980                 struct omapfb_info *ofbi;
1981
1982                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1983                                 fbdev->dev);
1984
1985                 if (fbi == NULL) {
1986                         dev_err(fbdev->dev,
1987                                 "unable to allocate memory for plane info\n");
1988                         return -ENOMEM;
1989                 }
1990
1991                 clear_fb_info(fbi);
1992
1993                 fbdev->fbs[i] = fbi;
1994
1995                 ofbi = FB2OFB(fbi);
1996                 ofbi->fbdev = fbdev;
1997                 ofbi->id = i;
1998
1999                 ofbi->region = &fbdev->regions[i];
2000                 ofbi->region->id = i;
2001                 init_rwsem(&ofbi->region->lock);
2002
2003                 /* assign these early, so that fb alloc can use them */
2004                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
2005                         OMAP_DSS_ROT_DMA;
2006                 ofbi->mirror = def_mirror;
2007
2008                 fbdev->num_fbs++;
2009         }
2010
2011         DBG("fb_infos allocated\n");
2012
2013         /* assign overlays for the fbs */
2014         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
2015                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
2016
2017                 ofbi->overlays[0] = fbdev->overlays[i];
2018                 ofbi->num_overlays = 1;
2019         }
2020
2021         /* allocate fb memories */
2022         r = omapfb_allocate_all_fbs(fbdev);
2023         if (r) {
2024                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
2025                 return r;
2026         }
2027
2028         DBG("fbmems allocated\n");
2029
2030         /* setup fb_infos */
2031         for (i = 0; i < fbdev->num_fbs; i++) {
2032                 struct fb_info *fbi = fbdev->fbs[i];
2033                 struct omapfb_info *ofbi = FB2OFB(fbi);
2034
2035                 omapfb_get_mem_region(ofbi->region);
2036                 r = omapfb_fb_init(fbdev, fbi);
2037                 omapfb_put_mem_region(ofbi->region);
2038
2039                 if (r) {
2040                         dev_err(fbdev->dev, "failed to setup fb_info\n");
2041                         return r;
2042                 }
2043         }
2044
2045         DBG("fb_infos initialized\n");
2046
2047         for (i = 0; i < fbdev->num_fbs; i++) {
2048                 r = register_framebuffer(fbdev->fbs[i]);
2049                 if (r != 0) {
2050                         dev_err(fbdev->dev,
2051                                 "registering framebuffer %d failed\n", i);
2052                         return r;
2053                 }
2054         }
2055
2056         DBG("framebuffers registered\n");
2057
2058         for (i = 0; i < fbdev->num_fbs; i++) {
2059                 struct fb_info *fbi = fbdev->fbs[i];
2060                 struct omapfb_info *ofbi = FB2OFB(fbi);
2061
2062                 omapfb_get_mem_region(ofbi->region);
2063                 r = omapfb_apply_changes(fbi, 1);
2064                 omapfb_put_mem_region(ofbi->region);
2065
2066                 if (r) {
2067                         dev_err(fbdev->dev, "failed to change mode\n");
2068                         return r;
2069                 }
2070         }
2071
2072         /* Enable fb0 */
2073         if (fbdev->num_fbs > 0) {
2074                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2075
2076                 if (ofbi->num_overlays > 0) {
2077                         struct omap_overlay *ovl = ofbi->overlays[0];
2078
2079                         r = omapfb_overlay_enable(ovl, 1);
2080
2081                         if (r) {
2082                                 dev_err(fbdev->dev,
2083                                                 "failed to enable overlay\n");
2084                                 return r;
2085                         }
2086                 }
2087         }
2088
2089         DBG("create_framebuffers done\n");
2090
2091         return 0;
2092 }
2093
2094 static int omapfb_mode_to_timings(const char *mode_str,
2095                 struct omap_video_timings *timings, u8 *bpp)
2096 {
2097         struct fb_info *fbi;
2098         struct fb_var_screeninfo *var;
2099         struct fb_ops *fbops;
2100         int r;
2101
2102 #ifdef CONFIG_OMAP2_DSS_VENC
2103         if (strcmp(mode_str, "pal") == 0) {
2104                 *timings = omap_dss_pal_timings;
2105                 *bpp = 24;
2106                 return 0;
2107         } else if (strcmp(mode_str, "ntsc") == 0) {
2108                 *timings = omap_dss_ntsc_timings;
2109                 *bpp = 24;
2110                 return 0;
2111         }
2112 #endif
2113
2114         /* this is quite a hack, but I wanted to use the modedb and for
2115          * that we need fb_info and var, so we create dummy ones */
2116
2117         *bpp = 0;
2118         fbi = NULL;
2119         var = NULL;
2120         fbops = NULL;
2121
2122         fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2123         if (fbi == NULL) {
2124                 r = -ENOMEM;
2125                 goto err;
2126         }
2127
2128         var = kzalloc(sizeof(*var), GFP_KERNEL);
2129         if (var == NULL) {
2130                 r = -ENOMEM;
2131                 goto err;
2132         }
2133
2134         fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2135         if (fbops == NULL) {
2136                 r = -ENOMEM;
2137                 goto err;
2138         }
2139
2140         fbi->fbops = fbops;
2141
2142         r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2143         if (r == 0) {
2144                 r = -EINVAL;
2145                 goto err;
2146         }
2147
2148         timings->pixel_clock = PICOS2KHZ(var->pixclock);
2149         timings->hbp = var->left_margin;
2150         timings->hfp = var->right_margin;
2151         timings->vbp = var->upper_margin;
2152         timings->vfp = var->lower_margin;
2153         timings->hsw = var->hsync_len;
2154         timings->vsw = var->vsync_len;
2155         timings->x_res = var->xres;
2156         timings->y_res = var->yres;
2157
2158         switch (var->bits_per_pixel) {
2159         case 16:
2160                 *bpp = 16;
2161                 break;
2162         case 24:
2163         case 32:
2164         default:
2165                 *bpp = 24;
2166                 break;
2167         }
2168
2169         r = 0;
2170
2171 err:
2172         kfree(fbi);
2173         kfree(var);
2174         kfree(fbops);
2175
2176         return r;
2177 }
2178
2179 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2180                 struct omap_dss_device *display, char *mode_str)
2181 {
2182         int r;
2183         u8 bpp;
2184         struct omap_video_timings timings, temp_timings;
2185         struct omapfb_display_data *d;
2186
2187         r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2188         if (r)
2189                 return r;
2190
2191         d = get_display_data(fbdev, display);
2192         d->bpp_override = bpp;
2193
2194         if (display->driver->check_timings) {
2195                 r = display->driver->check_timings(display, &timings);
2196                 if (r)
2197                         return r;
2198         } else {
2199                 /* If check_timings is not present compare xres and yres */
2200                 if (display->driver->get_timings) {
2201                         display->driver->get_timings(display, &temp_timings);
2202
2203                         if (temp_timings.x_res != timings.x_res ||
2204                                 temp_timings.y_res != timings.y_res)
2205                                 return -EINVAL;
2206                 }
2207         }
2208
2209         if (display->driver->set_timings)
2210                         display->driver->set_timings(display, &timings);
2211
2212         return 0;
2213 }
2214
2215 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2216                 struct omap_dss_device *dssdev)
2217 {
2218         struct omapfb_display_data *d;
2219
2220         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2221
2222         d = get_display_data(fbdev, dssdev);
2223
2224         if (d->bpp_override != 0)
2225                 return d->bpp_override;
2226
2227         return dssdev->driver->get_recommended_bpp(dssdev);
2228 }
2229
2230 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2231 {
2232         char *str, *options, *this_opt;
2233         int r = 0;
2234
2235         str = kstrdup(def_mode, GFP_KERNEL);
2236         if (!str)
2237                 return -ENOMEM;
2238         options = str;
2239
2240         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2241                 char *p, *display_str, *mode_str;
2242                 struct omap_dss_device *display;
2243                 int i;
2244
2245                 p = strchr(this_opt, ':');
2246                 if (!p) {
2247                         r = -EINVAL;
2248                         break;
2249                 }
2250
2251                 *p = 0;
2252                 display_str = this_opt;
2253                 mode_str = p + 1;
2254
2255                 display = NULL;
2256                 for (i = 0; i < fbdev->num_displays; ++i) {
2257                         if (strcmp(fbdev->displays[i].dssdev->name,
2258                                                 display_str) == 0) {
2259                                 display = fbdev->displays[i].dssdev;
2260                                 break;
2261                         }
2262                 }
2263
2264                 if (!display) {
2265                         r = -EINVAL;
2266                         break;
2267                 }
2268
2269                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2270                 if (r)
2271                         break;
2272         }
2273
2274         kfree(str);
2275
2276         return r;
2277 }
2278
2279 static int omapfb_init_display(struct omapfb2_device *fbdev,
2280                 struct omap_dss_device *dssdev)
2281 {
2282         struct omap_dss_driver *dssdrv = dssdev->driver;
2283         struct omapfb_display_data *d;
2284         int r;
2285
2286         r = dssdrv->enable(dssdev);
2287         if (r) {
2288                 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2289                                 dssdev->name);
2290                 return r;
2291         }
2292
2293         d = get_display_data(fbdev, dssdev);
2294
2295         d->fbdev = fbdev;
2296
2297         if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2298                 u16 w, h;
2299
2300                 if (auto_update) {
2301                         omapfb_start_auto_update(fbdev, dssdev);
2302                         d->update_mode = OMAPFB_AUTO_UPDATE;
2303                 } else {
2304                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2305                 }
2306
2307                 if (dssdrv->enable_te) {
2308                         r = dssdrv->enable_te(dssdev, 1);
2309                         if (r) {
2310                                 dev_err(fbdev->dev, "Failed to set TE\n");
2311                                 return r;
2312                         }
2313                 }
2314
2315                 dssdrv->get_resolution(dssdev, &w, &h);
2316                 r = dssdrv->update(dssdev, 0, 0, w, h);
2317                 if (r) {
2318                         dev_err(fbdev->dev,
2319                                         "Failed to update display\n");
2320                         return r;
2321                 }
2322         } else {
2323                 d->update_mode = OMAPFB_AUTO_UPDATE;
2324         }
2325
2326         return 0;
2327 }
2328
2329 static int omapfb_probe(struct platform_device *pdev)
2330 {
2331         struct omapfb2_device *fbdev = NULL;
2332         int r = 0;
2333         int i;
2334         struct omap_overlay *ovl;
2335         struct omap_dss_device *def_display;
2336         struct omap_dss_device *dssdev;
2337
2338         DBG("omapfb_probe\n");
2339
2340         if (pdev->num_resources != 0) {
2341                 dev_err(&pdev->dev, "probed for an unknown device\n");
2342                 r = -ENODEV;
2343                 goto err0;
2344         }
2345
2346         fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2347         if (fbdev == NULL) {
2348                 r = -ENOMEM;
2349                 goto err0;
2350         }
2351
2352         /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2353         *        available for OMAP2 and OMAP3
2354         */
2355         if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2356                 def_vrfb = 0;
2357                 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2358                                 "ignoring the module parameter vrfb=y\n");
2359         }
2360
2361
2362         mutex_init(&fbdev->mtx);
2363
2364         fbdev->dev = &pdev->dev;
2365         platform_set_drvdata(pdev, fbdev);
2366
2367         r = 0;
2368         fbdev->num_displays = 0;
2369         dssdev = NULL;
2370         for_each_dss_dev(dssdev) {
2371                 struct omapfb_display_data *d;
2372
2373                 omap_dss_get_device(dssdev);
2374
2375                 if (!dssdev->driver) {
2376                         dev_err(&pdev->dev, "no driver for display\n");
2377                         r = -ENODEV;
2378                 }
2379
2380                 d = &fbdev->displays[fbdev->num_displays++];
2381                 d->dssdev = dssdev;
2382                 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2383                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2384                 else
2385                         d->update_mode = OMAPFB_AUTO_UPDATE;
2386         }
2387
2388         if (r)
2389                 goto cleanup;
2390
2391         if (fbdev->num_displays == 0) {
2392                 dev_err(&pdev->dev, "no displays\n");
2393                 r = -EINVAL;
2394                 goto cleanup;
2395         }
2396
2397         fbdev->num_overlays = omap_dss_get_num_overlays();
2398         for (i = 0; i < fbdev->num_overlays; i++)
2399                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2400
2401         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2402         for (i = 0; i < fbdev->num_managers; i++)
2403                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2404
2405         if (def_mode && strlen(def_mode) > 0) {
2406                 if (omapfb_parse_def_modes(fbdev))
2407                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2408         }
2409
2410         r = omapfb_create_framebuffers(fbdev);
2411         if (r)
2412                 goto cleanup;
2413
2414         for (i = 0; i < fbdev->num_managers; i++) {
2415                 struct omap_overlay_manager *mgr;
2416                 mgr = fbdev->managers[i];
2417                 r = mgr->apply(mgr);
2418                 if (r)
2419                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2420         }
2421
2422         DBG("mgr->apply'ed\n");
2423
2424         /* gfx overlay should be the default one. find a display
2425          * connected to that, and use it as default display */
2426         ovl = omap_dss_get_overlay(0);
2427         if (ovl->manager && ovl->manager->device) {
2428                 def_display = ovl->manager->device;
2429         } else {
2430                 dev_warn(&pdev->dev, "cannot find default display\n");
2431                 def_display = NULL;
2432         }
2433
2434         if (def_display) {
2435                 r = omapfb_init_display(fbdev, def_display);
2436                 if (r) {
2437                         dev_err(fbdev->dev,
2438                                         "failed to initialize default "
2439                                         "display\n");
2440                         goto cleanup;
2441                 }
2442         }
2443
2444         DBG("create sysfs for fbs\n");
2445         r = omapfb_create_sysfs(fbdev);
2446         if (r) {
2447                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2448                 goto cleanup;
2449         }
2450
2451         return 0;
2452
2453 cleanup:
2454         omapfb_free_resources(fbdev);
2455 err0:
2456         dev_err(&pdev->dev, "failed to setup omapfb\n");
2457         return r;
2458 }
2459
2460 static int omapfb_remove(struct platform_device *pdev)
2461 {
2462         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2463
2464         /* FIXME: wait till completion of pending events */
2465
2466         omapfb_remove_sysfs(fbdev);
2467
2468         omapfb_free_resources(fbdev);
2469
2470         return 0;
2471 }
2472
2473 static struct platform_driver omapfb_driver = {
2474         .probe          = omapfb_probe,
2475         .remove         = omapfb_remove,
2476         .driver         = {
2477                 .name   = "omapfb",
2478                 .owner  = THIS_MODULE,
2479         },
2480 };
2481
2482 static int __init omapfb_init(void)
2483 {
2484         DBG("omapfb_init\n");
2485
2486         if (platform_driver_register(&omapfb_driver)) {
2487                 printk(KERN_ERR "failed to register omapfb driver\n");
2488                 return -ENODEV;
2489         }
2490
2491         return 0;
2492 }
2493
2494 static void __exit omapfb_exit(void)
2495 {
2496         DBG("omapfb_exit\n");
2497         platform_driver_unregister(&omapfb_driver);
2498 }
2499
2500 module_param_named(mode, def_mode, charp, 0);
2501 module_param_named(vram, def_vram, charp, 0);
2502 module_param_named(rotate, def_rotate, int, 0);
2503 module_param_named(vrfb, def_vrfb, bool, 0);
2504 module_param_named(mirror, def_mirror, bool, 0);
2505
2506 /* late_initcall to let panel/ctrl drivers loaded first.
2507  * I guess better option would be a more dynamic approach,
2508  * so that omapfb reacts to new panels when they are loaded */
2509 late_initcall(omapfb_init);
2510 /*module_init(omapfb_init);*/
2511 module_exit(omapfb_exit);
2512
2513 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2514 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2515 MODULE_LICENSE("GPL v2");