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 <video/omapvrfb.h>
  35
  36 #include "omapfb.h"
  37
  38 #define MODULE_NAME     "omapfb"
  39
  40 #define OMAPFB_PLANE_XRES_MIN           8
  41 #define OMAPFB_PLANE_YRES_MIN           8
  42
  43 static char *def_mode;
  44 static char *def_vram;
  45 static bool def_vrfb;
  46 static int def_rotate;
  47 static bool def_mirror;
  48 static bool auto_update;
  49 static unsigned int auto_update_freq;
  50 module_param(auto_update, bool, 0);
  51 module_param(auto_update_freq, uint, 0644);
  52
  53 #ifdef DEBUG
  54 bool omapfb_debug;
  55 module_param_named(debug, omapfb_debug, bool, 0644);
  56 static bool omapfb_test_pattern;
  57 module_param_named(test, omapfb_test_pattern, bool, 0644);
  58 #endif
  59
  60 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
  61 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
  62                 struct omap_dss_device *dssdev);
  63
  64 #ifdef DEBUG
  65 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  66 {
  67         struct fb_var_screeninfo *var = &fbi->var;
  68         struct fb_fix_screeninfo *fix = &fbi->fix;
  69         void __iomem *addr = fbi->screen_base;
  70         const unsigned bytespp = var->bits_per_pixel >> 3;
  71         const unsigned line_len = fix->line_length / bytespp;
  72
  73         int r = (color >> 16) & 0xff;
  74         int g = (color >> 8) & 0xff;
  75         int b = (color >> 0) & 0xff;
  76
  77         if (var->bits_per_pixel == 16) {
  78                 u16 __iomem *p = (u16 __iomem *)addr;
  79                 p += y * line_len + x;
  80
  81                 r = r * 32 / 256;
  82                 g = g * 64 / 256;
  83                 b = b * 32 / 256;
  84
  85                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  86         } else if (var->bits_per_pixel == 24) {
  87                 u8 __iomem *p = (u8 __iomem *)addr;
  88                 p += (y * line_len + x) * 3;
  89
  90                 __raw_writeb(b, p + 0);
  91                 __raw_writeb(g, p + 1);
  92                 __raw_writeb(r, p + 2);
  93         } else if (var->bits_per_pixel == 32) {
  94                 u32 __iomem *p = (u32 __iomem *)addr;
  95                 p += y * line_len + x;
  96                 __raw_writel(color, p);
  97         }
  98 }
  99
 100 static void fill_fb(struct fb_info *fbi)
 101 {
 102         struct fb_var_screeninfo *var = &fbi->var;
 103         const short w = var->xres_virtual;
 104         const short h = var->yres_virtual;
 105         void __iomem *addr = fbi->screen_base;
 106         int y, x;
 107
 108         if (!addr)
 109                 return;
 110
 111         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 112
 113         for (y = 0; y < h; y++) {
 114                 for (x = 0; x < w; x++) {
 115                         if (x < 20 && y < 20)
 116                                 draw_pixel(fbi, x, y, 0xffffff);
 117                         else if (x < 20 && (y > 20 && y < h - 20))
 118                                 draw_pixel(fbi, x, y, 0xff);
 119                         else if (y < 20 && (x > 20 && x < w - 20))
 120                                 draw_pixel(fbi, x, y, 0xff00);
 121                         else if (x > w - 20 && (y > 20 && y < h - 20))
 122                                 draw_pixel(fbi, x, y, 0xff0000);
 123                         else if (y > h - 20 && (x > 20 && x < w - 20))
 124                                 draw_pixel(fbi, x, y, 0xffff00);
 125                         else if (x == 20 || x == w - 20 ||
 126                                         y == 20 || y == h - 20)
 127                                 draw_pixel(fbi, x, y, 0xffffff);
 128                         else if (x == y || w - x == h - y)
 129                                 draw_pixel(fbi, x, y, 0xff00ff);
 130                         else if (w - x == y || x == h - y)
 131                                 draw_pixel(fbi, x, y, 0x00ffff);
 132                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 133                                 int t = x * 3 / w;
 134                                 unsigned r = 0, g = 0, b = 0;
 135                                 unsigned c;
 136                                 if (var->bits_per_pixel == 16) {
 137                                         if (t == 0)
 138                                                 b = (y % 32) * 256 / 32;
 139                                         else if (t == 1)
 140                                                 g = (y % 64) * 256 / 64;
 141                                         else if (t == 2)
 142                                                 r = (y % 32) * 256 / 32;
 143                                 } else {
 144                                         if (t == 0)
 145                                                 b = (y % 256);
 146                                         else if (t == 1)
 147                                                 g = (y % 256);
 148                                         else if (t == 2)
 149                                                 r = (y % 256);
 150                                 }
 151                                 c = (r << 16) | (g << 8) | (b << 0);
 152                                 draw_pixel(fbi, x, y, c);
 153                         } else {
 154                                 draw_pixel(fbi, x, y, 0);
 155                         }
 156                 }
 157         }
 158 }
 159 #endif
 160
 161 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
 162 {
 163         const struct vrfb *vrfb = &ofbi->region->vrfb;
 164         unsigned offset;
 165
 166         switch (rot) {
 167         case FB_ROTATE_UR:
 168                 offset = 0;
 169                 break;
 170         case FB_ROTATE_CW:
 171                 offset = vrfb->yoffset;
 172                 break;
 173         case FB_ROTATE_UD:
 174                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 175                 break;
 176         case FB_ROTATE_CCW:
 177                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 178                 break;
 179         default:
 180                 BUG();
 181                 return 0;
 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                 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
 736                                 FB_SYNC_HOR_HIGH_ACT : 0;
 737                 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
 738                                 FB_SYNC_VERT_HIGH_ACT : 0;
 739                 var->vmode = timings.interlace ?
 740                                 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
 741         } else {
 742                 var->pixclock = 0;
 743                 var->left_margin = 0;
 744                 var->right_margin = 0;
 745                 var->upper_margin = 0;
 746                 var->lower_margin = 0;
 747                 var->hsync_len = 0;
 748                 var->vsync_len = 0;
 749                 var->sync = 0;
 750                 var->vmode = FB_VMODE_NONINTERLACED;
 751         }
 752
 753         return 0;
 754 }
 755
 756 /*
 757  * ---------------------------------------------------------------------------
 758  * fbdev framework callbacks
 759  * ---------------------------------------------------------------------------
 760  */
 761 static int omapfb_open(struct fb_info *fbi, int user)
 762 {
 763         return 0;
 764 }
 765
 766 static int omapfb_release(struct fb_info *fbi, int user)
 767 {
 768         return 0;
 769 }
 770
 771 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
 772                 const struct fb_fix_screeninfo *fix, int rotation)
 773 {
 774         unsigned offset;
 775
 776         offset = var->yoffset * fix->line_length +
 777                 var->xoffset * (var->bits_per_pixel >> 3);
 778
 779         return offset;
 780 }
 781
 782 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
 783                 const struct fb_fix_screeninfo *fix, int rotation)
 784 {
 785         unsigned offset;
 786
 787         if (rotation == FB_ROTATE_UD)
 788                 offset = (var->yres_virtual - var->yres) *
 789                         fix->line_length;
 790         else if (rotation == FB_ROTATE_CW)
 791                 offset = (var->yres_virtual - var->yres) *
 792                         (var->bits_per_pixel >> 3);
 793         else
 794                 offset = 0;
 795
 796         if (rotation == FB_ROTATE_UR)
 797                 offset += var->yoffset * fix->line_length +
 798                         var->xoffset * (var->bits_per_pixel >> 3);
 799         else if (rotation == FB_ROTATE_UD)
 800                 offset -= var->yoffset * fix->line_length +
 801                         var->xoffset * (var->bits_per_pixel >> 3);
 802         else if (rotation == FB_ROTATE_CW)
 803                 offset -= var->xoffset * fix->line_length +
 804                         var->yoffset * (var->bits_per_pixel >> 3);
 805         else if (rotation == FB_ROTATE_CCW)
 806                 offset += var->xoffset * fix->line_length +
 807                         var->yoffset * (var->bits_per_pixel >> 3);
 808
 809         return offset;
 810 }
 811
 812 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
 813                              const struct fb_var_screeninfo *var,
 814                              const struct fb_fix_screeninfo *fix,
 815                              int rotation, u32 *paddr)
 816 {
 817         u32 data_start_p;
 818         int offset;
 819
 820         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 821                 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
 822         else
 823                 data_start_p = omapfb_get_region_paddr(ofbi);
 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
 832         if (offset)
 833                 DBG("offset %d, %d = %d\n",
 834                     var->xoffset, var->yoffset, offset);
 835
 836         DBG("paddr %x\n", data_start_p);
 837
 838         *paddr = data_start_p;
 839 }
 840
 841 /* setup overlay according to the fb */
 842 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 843                 u16 posx, u16 posy, u16 outw, u16 outh)
 844 {
 845         int r = 0;
 846         struct omapfb_info *ofbi = FB2OFB(fbi);
 847         struct fb_var_screeninfo *var = &fbi->var;
 848         struct fb_fix_screeninfo *fix = &fbi->fix;
 849         enum omap_color_mode mode = 0;
 850         u32 data_start_p = 0;
 851         struct omap_overlay_info info;
 852         int xres, yres;
 853         int screen_width;
 854         int mirror;
 855         int rotation = var->rotate;
 856         int i;
 857
 858         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 859
 860         for (i = 0; i < ofbi->num_overlays; i++) {
 861                 if (ovl != ofbi->overlays[i])
 862                         continue;
 863
 864                 rotation = (rotation + ofbi->rotation[i]) % 4;
 865                 break;
 866         }
 867
 868         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 869                         posx, posy, outw, outh);
 870
 871         if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
 872                 xres = var->yres;
 873                 yres = var->xres;
 874         } else {
 875                 xres = var->xres;
 876                 yres = var->yres;
 877         }
 878
 879         if (ofbi->region->size)
 880                 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
 881
 882         r = fb_mode_to_dss_mode(var, &mode);
 883         if (r) {
 884                 DBG("fb_mode_to_dss_mode failed");
 885                 goto err;
 886         }
 887
 888         switch (var->nonstd) {
 889         case OMAPFB_COLOR_YUV422:
 890         case OMAPFB_COLOR_YUY422:
 891                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 892                         screen_width = fix->line_length
 893                                 / (var->bits_per_pixel >> 2);
 894                         break;
 895                 }
 896         default:
 897                 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 898                 break;
 899         }
 900
 901         ovl->get_overlay_info(ovl, &info);
 902
 903         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 904                 mirror = 0;
 905         else
 906                 mirror = ofbi->mirror;
 907
 908         info.paddr = data_start_p;
 909         info.screen_width = screen_width;
 910         info.width = xres;
 911         info.height = yres;
 912         info.color_mode = mode;
 913         info.rotation_type = ofbi->rotation_type;
 914         info.rotation = rotation;
 915         info.mirror = mirror;
 916
 917         info.pos_x = posx;
 918         info.pos_y = posy;
 919         info.out_width = outw;
 920         info.out_height = outh;
 921
 922         r = ovl->set_overlay_info(ovl, &info);
 923         if (r) {
 924                 DBG("ovl->setup_overlay_info failed\n");
 925                 goto err;
 926         }
 927
 928         return 0;
 929
 930 err:
 931         DBG("setup_overlay failed\n");
 932         return r;
 933 }
 934
 935 /* apply var to the overlay */
 936 int omapfb_apply_changes(struct fb_info *fbi, int init)
 937 {
 938         int r = 0;
 939         struct omapfb_info *ofbi = FB2OFB(fbi);
 940         struct fb_var_screeninfo *var = &fbi->var;
 941         struct omap_overlay *ovl;
 942         u16 posx, posy;
 943         u16 outw, outh;
 944         int i;
 945
 946 #ifdef DEBUG
 947         if (omapfb_test_pattern)
 948                 fill_fb(fbi);
 949 #endif
 950
 951         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 952
 953         for (i = 0; i < ofbi->num_overlays; i++) {
 954                 ovl = ofbi->overlays[i];
 955
 956                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 957
 958                 if (ofbi->region->size == 0) {
 959                         /* the fb is not available. disable the overlay */
 960                         omapfb_overlay_enable(ovl, 0);
 961                         if (!init && ovl->manager)
 962                                 ovl->manager->apply(ovl->manager);
 963                         continue;
 964                 }
 965
 966                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 967                         int rotation = (var->rotate + ofbi->rotation[i]) % 4;
 968                         if (rotation == FB_ROTATE_CW ||
 969                                         rotation == FB_ROTATE_CCW) {
 970                                 outw = var->yres;
 971                                 outh = var->xres;
 972                         } else {
 973                                 outw = var->xres;
 974                                 outh = var->yres;
 975                         }
 976                 } else {
 977                         struct omap_overlay_info info;
 978                         ovl->get_overlay_info(ovl, &info);
 979                         outw = info.out_width;
 980                         outh = info.out_height;
 981                 }
 982
 983                 if (init) {
 984                         posx = 0;
 985                         posy = 0;
 986                 } else {
 987                         struct omap_overlay_info info;
 988                         ovl->get_overlay_info(ovl, &info);
 989                         posx = info.pos_x;
 990                         posy = info.pos_y;
 991                 }
 992
 993                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
 994                 if (r)
 995                         goto err;
 996
 997                 if (!init && ovl->manager)
 998                         ovl->manager->apply(ovl->manager);
 999         }
1000         return 0;
1001 err:
1002         DBG("apply_changes failed\n");
1003         return r;
1004 }
1005
1006 /* checks var and eventually tweaks it to something supported,
1007  * DO NOT MODIFY PAR */
1008 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1009 {
1010         struct omapfb_info *ofbi = FB2OFB(fbi);
1011         int r;
1012
1013         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1014
1015         omapfb_get_mem_region(ofbi->region);
1016
1017         r = check_fb_var(fbi, var);
1018
1019         omapfb_put_mem_region(ofbi->region);
1020
1021         return r;
1022 }
1023
1024 /* set the video mode according to info->var */
1025 static int omapfb_set_par(struct fb_info *fbi)
1026 {
1027         struct omapfb_info *ofbi = FB2OFB(fbi);
1028         int r;
1029
1030         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1031
1032         omapfb_get_mem_region(ofbi->region);
1033
1034         set_fb_fix(fbi);
1035
1036         r = setup_vrfb_rotation(fbi);
1037         if (r)
1038                 goto out;
1039
1040         r = omapfb_apply_changes(fbi, 0);
1041
1042  out:
1043         omapfb_put_mem_region(ofbi->region);
1044
1045         return r;
1046 }
1047
1048 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1049                 struct fb_info *fbi)
1050 {
1051         struct omapfb_info *ofbi = FB2OFB(fbi);
1052         struct fb_var_screeninfo new_var;
1053         int r;
1054
1055         DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1056
1057         if (var->xoffset == fbi->var.xoffset &&
1058             var->yoffset == fbi->var.yoffset)
1059                 return 0;
1060
1061         new_var = fbi->var;
1062         new_var.xoffset = var->xoffset;
1063         new_var.yoffset = var->yoffset;
1064
1065         fbi->var = new_var;
1066
1067         omapfb_get_mem_region(ofbi->region);
1068
1069         r = omapfb_apply_changes(fbi, 0);
1070
1071         omapfb_put_mem_region(ofbi->region);
1072
1073         return r;
1074 }
1075
1076 static void mmap_user_open(struct vm_area_struct *vma)
1077 {
1078         struct omapfb2_mem_region *rg = vma->vm_private_data;
1079
1080         omapfb_get_mem_region(rg);
1081         atomic_inc(&rg->map_count);
1082         omapfb_put_mem_region(rg);
1083 }
1084
1085 static void mmap_user_close(struct vm_area_struct *vma)
1086 {
1087         struct omapfb2_mem_region *rg = vma->vm_private_data;
1088
1089         omapfb_get_mem_region(rg);
1090         atomic_dec(&rg->map_count);
1091         omapfb_put_mem_region(rg);
1092 }
1093
1094 static struct vm_operations_struct mmap_user_ops = {
1095         .open = mmap_user_open,
1096         .close = mmap_user_close,
1097 };
1098
1099 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1100 {
1101         struct omapfb_info *ofbi = FB2OFB(fbi);
1102         struct fb_fix_screeninfo *fix = &fbi->fix;
1103         struct omapfb2_mem_region *rg;
1104         unsigned long off;
1105         unsigned long start;
1106         u32 len;
1107         int r = -EINVAL;
1108
1109         if (vma->vm_end - vma->vm_start == 0)
1110                 return 0;
1111         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1112                 return -EINVAL;
1113         off = vma->vm_pgoff << PAGE_SHIFT;
1114
1115         rg = omapfb_get_mem_region(ofbi->region);
1116
1117         start = omapfb_get_region_paddr(ofbi);
1118         len = fix->smem_len;
1119         if (off >= len)
1120                 goto error;
1121         if ((vma->vm_end - vma->vm_start + off) > len)
1122                 goto error;
1123
1124         off += start;
1125
1126         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1127
1128         vma->vm_pgoff = off >> PAGE_SHIFT;
1129         /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */
1130         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1131         vma->vm_ops = &mmap_user_ops;
1132         vma->vm_private_data = rg;
1133         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1134                                vma->vm_end - vma->vm_start,
1135                                vma->vm_page_prot)) {
1136                 r = -EAGAIN;
1137                 goto error;
1138         }
1139
1140         /* vm_ops.open won't be called for mmap itself. */
1141         atomic_inc(&rg->map_count);
1142
1143         omapfb_put_mem_region(rg);
1144
1145         return 0;
1146
1147  error:
1148         omapfb_put_mem_region(ofbi->region);
1149
1150         return r;
1151 }
1152
1153 /* Store a single color palette entry into a pseudo palette or the hardware
1154  * palette if one is available. For now we support only 16bpp and thus store
1155  * the entry only to the pseudo palette.
1156  */
1157 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1158                 u_int blue, u_int transp, int update_hw_pal)
1159 {
1160         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1161         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1162         struct fb_var_screeninfo *var = &fbi->var;
1163         int r = 0;
1164
1165         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1166
1167         /*switch (plane->color_mode) {*/
1168         switch (mode) {
1169         case OMAPFB_COLOR_YUV422:
1170         case OMAPFB_COLOR_YUV420:
1171         case OMAPFB_COLOR_YUY422:
1172                 r = -EINVAL;
1173                 break;
1174         case OMAPFB_COLOR_CLUT_8BPP:
1175         case OMAPFB_COLOR_CLUT_4BPP:
1176         case OMAPFB_COLOR_CLUT_2BPP:
1177         case OMAPFB_COLOR_CLUT_1BPP:
1178                 /*
1179                    if (fbdev->ctrl->setcolreg)
1180                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1181                    transp, update_hw_pal);
1182                    */
1183                 /* Fallthrough */
1184                 r = -EINVAL;
1185                 break;
1186         case OMAPFB_COLOR_RGB565:
1187         case OMAPFB_COLOR_RGB444:
1188         case OMAPFB_COLOR_RGB24P:
1189         case OMAPFB_COLOR_RGB24U:
1190                 if (r != 0)
1191                         break;
1192
1193                 if (regno < 16) {
1194                         u32 pal;
1195                         pal = ((red >> (16 - var->red.length)) <<
1196                                         var->red.offset) |
1197                                 ((green >> (16 - var->green.length)) <<
1198                                  var->green.offset) |
1199                                 (blue >> (16 - var->blue.length));
1200                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1201                 }
1202                 break;
1203         default:
1204                 BUG();
1205         }
1206         return r;
1207 }
1208
1209 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1210                 u_int transp, struct fb_info *info)
1211 {
1212         DBG("setcolreg\n");
1213
1214         return _setcolreg(info, regno, red, green, blue, transp, 1);
1215 }
1216
1217 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1218 {
1219         int count, index, r;
1220         u16 *red, *green, *blue, *transp;
1221         u16 trans = 0xffff;
1222
1223         DBG("setcmap\n");
1224
1225         red     = cmap->red;
1226         green   = cmap->green;
1227         blue    = cmap->blue;
1228         transp  = cmap->transp;
1229         index   = cmap->start;
1230
1231         for (count = 0; count < cmap->len; count++) {
1232                 if (transp)
1233                         trans = *transp++;
1234                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1235                                 count == cmap->len - 1);
1236                 if (r != 0)
1237                         return r;
1238         }
1239
1240         return 0;
1241 }
1242
1243 static int omapfb_blank(int blank, struct fb_info *fbi)
1244 {
1245         struct omapfb_info *ofbi = FB2OFB(fbi);
1246         struct omapfb2_device *fbdev = ofbi->fbdev;
1247         struct omap_dss_device *display = fb2display(fbi);
1248         struct omapfb_display_data *d;
1249         int r = 0;
1250
1251         if (!display)
1252                 return -EINVAL;
1253
1254         omapfb_lock(fbdev);
1255
1256         d = get_display_data(fbdev, display);
1257
1258         switch (blank) {
1259         case FB_BLANK_UNBLANK:
1260                 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1261                         goto exit;
1262
1263                 r = display->driver->enable(display);
1264
1265                 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1266                                 d->update_mode == OMAPFB_AUTO_UPDATE &&
1267                                 !d->auto_update_work_enabled)
1268                         omapfb_start_auto_update(fbdev, display);
1269
1270                 break;
1271
1272         case FB_BLANK_NORMAL:
1273                 /* FB_BLANK_NORMAL could be implemented.
1274                  * Needs DSS additions. */
1275         case FB_BLANK_VSYNC_SUSPEND:
1276         case FB_BLANK_HSYNC_SUSPEND:
1277         case FB_BLANK_POWERDOWN:
1278                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1279                         goto exit;
1280
1281                 if (d->auto_update_work_enabled)
1282                         omapfb_stop_auto_update(fbdev, display);
1283
1284                 display->driver->disable(display);
1285
1286                 break;
1287
1288         default:
1289                 r = -EINVAL;
1290         }
1291
1292 exit:
1293         omapfb_unlock(fbdev);
1294
1295         return r;
1296 }
1297
1298 #if 0
1299 /* XXX fb_read and fb_write are needed for VRFB */
1300 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1301                 size_t count, loff_t *ppos)
1302 {
1303         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1304         /* XXX needed for VRFB */
1305         return count;
1306 }
1307 #endif
1308
1309 static struct fb_ops omapfb_ops = {
1310         .owner          = THIS_MODULE,
1311         .fb_open        = omapfb_open,
1312         .fb_release     = omapfb_release,
1313         .fb_fillrect    = cfb_fillrect,
1314         .fb_copyarea    = cfb_copyarea,
1315         .fb_imageblit   = cfb_imageblit,
1316         .fb_blank       = omapfb_blank,
1317         .fb_ioctl       = omapfb_ioctl,
1318         .fb_check_var   = omapfb_check_var,
1319         .fb_set_par     = omapfb_set_par,
1320         .fb_pan_display = omapfb_pan_display,
1321         .fb_mmap        = omapfb_mmap,
1322         .fb_setcolreg   = omapfb_setcolreg,
1323         .fb_setcmap     = omapfb_setcmap,
1324         /*.fb_write     = omapfb_write,*/
1325 };
1326
1327 static void omapfb_free_fbmem(struct fb_info *fbi)
1328 {
1329         struct omapfb_info *ofbi = FB2OFB(fbi);
1330         struct omapfb2_device *fbdev = ofbi->fbdev;
1331         struct omapfb2_mem_region *rg;
1332
1333         rg = ofbi->region;
1334
1335         if (rg->token == NULL)
1336                 return;
1337
1338         WARN_ON(atomic_read(&rg->map_count));
1339
1340         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1341                 /* unmap the 0 angle rotation */
1342                 if (rg->vrfb.vaddr[0]) {
1343                         iounmap(rg->vrfb.vaddr[0]);
1344                         rg->vrfb.vaddr[0] = NULL;
1345                 }
1346
1347                 omap_vrfb_release_ctx(&rg->vrfb);
1348         }
1349
1350         dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1351                         &rg->attrs);
1352
1353         rg->token = NULL;
1354         rg->vaddr = NULL;
1355         rg->paddr = 0;
1356         rg->alloc = 0;
1357         rg->size = 0;
1358 }
1359
1360 static void clear_fb_info(struct fb_info *fbi)
1361 {
1362         memset(&fbi->var, 0, sizeof(fbi->var));
1363         memset(&fbi->fix, 0, sizeof(fbi->fix));
1364         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1365 }
1366
1367 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1368 {
1369         int i;
1370
1371         DBG("free all fbmem\n");
1372
1373         for (i = 0; i < fbdev->num_fbs; i++) {
1374                 struct fb_info *fbi = fbdev->fbs[i];
1375                 omapfb_free_fbmem(fbi);
1376                 clear_fb_info(fbi);
1377         }
1378
1379         return 0;
1380 }
1381
1382 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1383                 unsigned long paddr)
1384 {
1385         struct omapfb_info *ofbi = FB2OFB(fbi);
1386         struct omapfb2_device *fbdev = ofbi->fbdev;
1387         struct omapfb2_mem_region *rg;
1388         void *token;
1389         DEFINE_DMA_ATTRS(attrs);
1390         dma_addr_t dma_handle;
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         dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
1406
1407         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1408                 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
1409
1410         DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1411
1412         token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1413                         GFP_KERNEL, &attrs);
1414
1415         if (token == NULL) {
1416                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1417                 return -ENOMEM;
1418         }
1419
1420         DBG("allocated VRAM paddr %lx, vaddr %p\n",
1421                         (unsigned long)dma_handle, token);
1422
1423         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1424                 r = omap_vrfb_request_ctx(&rg->vrfb);
1425                 if (r) {
1426                         dma_free_attrs(fbdev->dev, size, token, dma_handle,
1427                                         &attrs);
1428                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1429                         return r;
1430                 }
1431         }
1432
1433         rg->attrs = attrs;
1434         rg->token = token;
1435         rg->dma_handle = dma_handle;
1436
1437         rg->paddr = (unsigned long)dma_handle;
1438         rg->vaddr = (void __iomem *)token;
1439         rg->size = size;
1440         rg->alloc = 1;
1441
1442         return 0;
1443 }
1444
1445 /* allocate fbmem using display resolution as reference */
1446 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1447                 unsigned long paddr)
1448 {
1449         struct omapfb_info *ofbi = FB2OFB(fbi);
1450         struct omapfb2_device *fbdev = ofbi->fbdev;
1451         struct omap_dss_device *display;
1452         int bytespp;
1453
1454         display =  fb2display(fbi);
1455
1456         if (!display)
1457                 return 0;
1458
1459         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1460         case 16:
1461                 bytespp = 2;
1462                 break;
1463         case 24:
1464                 bytespp = 4;
1465                 break;
1466         default:
1467                 bytespp = 4;
1468                 break;
1469         }
1470
1471         if (!size) {
1472                 u16 w, h;
1473
1474                 display->driver->get_resolution(display, &w, &h);
1475
1476                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1477                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1478                                         omap_vrfb_min_phys_size(h, w, bytespp));
1479
1480                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1481                                         w * h * bytespp, size);
1482                 } else {
1483                         size = w * h * bytespp;
1484                 }
1485         }
1486
1487         if (!size)
1488                 return 0;
1489
1490         return omapfb_alloc_fbmem(fbi, size, paddr);
1491 }
1492
1493 static int omapfb_parse_vram_param(const char *param, int max_entries,
1494                 unsigned long *sizes, unsigned long *paddrs)
1495 {
1496         int fbnum;
1497         unsigned long size;
1498         unsigned long paddr = 0;
1499         char *p, *start;
1500
1501         start = (char *)param;
1502
1503         while (1) {
1504                 p = start;
1505
1506                 fbnum = simple_strtoul(p, &p, 10);
1507
1508                 if (p == start)
1509                         return -EINVAL;
1510
1511                 if (*p != ':')
1512                         return -EINVAL;
1513
1514                 if (fbnum >= max_entries)
1515                         return -EINVAL;
1516
1517                 size = memparse(p + 1, &p);
1518
1519                 if (!size)
1520                         return -EINVAL;
1521
1522                 paddr = 0;
1523
1524                 if (*p == '@') {
1525                         paddr = simple_strtoul(p + 1, &p, 16);
1526
1527                         if (!paddr)
1528                                 return -EINVAL;
1529
1530                 }
1531
1532                 WARN_ONCE(paddr,
1533                         "reserving memory at predefined address not supported\n");
1534
1535                 paddrs[fbnum] = paddr;
1536                 sizes[fbnum] = size;
1537
1538                 if (*p == 0)
1539                         break;
1540
1541                 if (*p != ',')
1542                         return -EINVAL;
1543
1544                 ++p;
1545
1546                 start = p;
1547         }
1548
1549         return 0;
1550 }
1551
1552 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1553 {
1554         int i, r;
1555         unsigned long vram_sizes[10];
1556         unsigned long vram_paddrs[10];
1557
1558         memset(&vram_sizes, 0, sizeof(vram_sizes));
1559         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1560
1561         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1562                                 vram_sizes, vram_paddrs)) {
1563                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1564
1565                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1566                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1567         }
1568
1569         for (i = 0; i < fbdev->num_fbs; i++) {
1570                 /* allocate memory automatically only for fb0, or if
1571                  * excplicitly defined with vram or plat data option */
1572                 if (i == 0 || vram_sizes[i] != 0) {
1573                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1574                                         vram_sizes[i], vram_paddrs[i]);
1575
1576                         if (r)
1577                                 return r;
1578                 }
1579         }
1580
1581         for (i = 0; i < fbdev->num_fbs; i++) {
1582                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1583                 struct omapfb2_mem_region *rg;
1584                 rg = ofbi->region;
1585
1586                 DBG("region%d phys %08x virt %p size=%lu\n",
1587                                 i,
1588                                 rg->paddr,
1589                                 rg->vaddr,
1590                                 rg->size);
1591         }
1592
1593         return 0;
1594 }
1595
1596 static void omapfb_clear_fb(struct fb_info *fbi)
1597 {
1598         const struct fb_fillrect rect = {
1599                 .dx = 0,
1600                 .dy = 0,
1601                 .width = fbi->var.xres_virtual,
1602                 .height = fbi->var.yres_virtual,
1603                 .color = 0,
1604                 .rop = ROP_COPY,
1605         };
1606
1607         cfb_fillrect(fbi, &rect);
1608 }
1609
1610 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1611 {
1612         struct omapfb_info *ofbi = FB2OFB(fbi);
1613         struct omapfb2_device *fbdev = ofbi->fbdev;
1614         struct omapfb2_mem_region *rg = ofbi->region;
1615         unsigned long old_size = rg->size;
1616         unsigned long old_paddr = rg->paddr;
1617         int old_type = rg->type;
1618         int r;
1619
1620         if (type != OMAPFB_MEMTYPE_SDRAM)
1621                 return -EINVAL;
1622
1623         size = PAGE_ALIGN(size);
1624
1625         if (old_size == size && old_type == type)
1626                 return 0;
1627
1628         omapfb_free_fbmem(fbi);
1629
1630         if (size == 0) {
1631                 clear_fb_info(fbi);
1632                 return 0;
1633         }
1634
1635         r = omapfb_alloc_fbmem(fbi, size, 0);
1636
1637         if (r) {
1638                 if (old_size)
1639                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1640
1641                 if (rg->size == 0)
1642                         clear_fb_info(fbi);
1643
1644                 return r;
1645         }
1646
1647         if (old_size == size)
1648                 return 0;
1649
1650         if (old_size == 0) {
1651                 DBG("initializing fb %d\n", ofbi->id);
1652                 r = omapfb_fb_init(fbdev, fbi);
1653                 if (r) {
1654                         DBG("omapfb_fb_init failed\n");
1655                         goto err;
1656                 }
1657                 r = omapfb_apply_changes(fbi, 1);
1658                 if (r) {
1659                         DBG("omapfb_apply_changes failed\n");
1660                         goto err;
1661                 }
1662         } else {
1663                 struct fb_var_screeninfo new_var;
1664                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1665                 r = check_fb_var(fbi, &new_var);
1666                 if (r)
1667                         goto err;
1668                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1669                 set_fb_fix(fbi);
1670                 r = setup_vrfb_rotation(fbi);
1671                 if (r)
1672                         goto err;
1673         }
1674
1675         omapfb_clear_fb(fbi);
1676
1677         return 0;
1678 err:
1679         omapfb_free_fbmem(fbi);
1680         clear_fb_info(fbi);
1681         return r;
1682 }
1683
1684 static void omapfb_auto_update_work(struct work_struct *work)
1685 {
1686         struct omap_dss_device *dssdev;
1687         struct omap_dss_driver *dssdrv;
1688         struct omapfb_display_data *d;
1689         u16 w, h;
1690         unsigned int freq;
1691         struct omapfb2_device *fbdev;
1692
1693         d = container_of(work, struct omapfb_display_data,
1694                         auto_update_work.work);
1695
1696         dssdev = d->dssdev;
1697         dssdrv = dssdev->driver;
1698         fbdev = d->fbdev;
1699
1700         if (!dssdrv || !dssdrv->update)
1701                 return;
1702
1703         if (dssdrv->sync)
1704                 dssdrv->sync(dssdev);
1705
1706         dssdrv->get_resolution(dssdev, &w, &h);
1707         dssdrv->update(dssdev, 0, 0, w, h);
1708
1709         freq = auto_update_freq;
1710         if (freq == 0)
1711                 freq = 20;
1712         queue_delayed_work(fbdev->auto_update_wq,
1713                         &d->auto_update_work, HZ / freq);
1714 }
1715
1716 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1717                 struct omap_dss_device *display)
1718 {
1719         struct omapfb_display_data *d;
1720
1721         if (fbdev->auto_update_wq == NULL) {
1722                 struct workqueue_struct *wq;
1723
1724                 wq = create_singlethread_workqueue("omapfb_auto_update");
1725
1726                 if (wq == NULL) {
1727                         dev_err(fbdev->dev, "Failed to create workqueue for "
1728                                         "auto-update\n");
1729                         return;
1730                 }
1731
1732                 fbdev->auto_update_wq = wq;
1733         }
1734
1735         d = get_display_data(fbdev, display);
1736
1737         INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1738
1739         d->auto_update_work_enabled = true;
1740
1741         omapfb_auto_update_work(&d->auto_update_work.work);
1742 }
1743
1744 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1745                 struct omap_dss_device *display)
1746 {
1747         struct omapfb_display_data *d;
1748
1749         d = get_display_data(fbdev, display);
1750
1751         cancel_delayed_work_sync(&d->auto_update_work);
1752
1753         d->auto_update_work_enabled = false;
1754 }
1755
1756 /* initialize fb_info, var, fix to something sane based on the display */
1757 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1758 {
1759         struct fb_var_screeninfo *var = &fbi->var;
1760         struct omap_dss_device *display = fb2display(fbi);
1761         struct omapfb_info *ofbi = FB2OFB(fbi);
1762         int r = 0;
1763
1764         fbi->fbops = &omapfb_ops;
1765         fbi->flags = FBINFO_FLAG_DEFAULT;
1766         fbi->pseudo_palette = fbdev->pseudo_palette;
1767
1768         if (ofbi->region->size == 0) {
1769                 clear_fb_info(fbi);
1770                 return 0;
1771         }
1772
1773         var->nonstd = 0;
1774         var->bits_per_pixel = 0;
1775
1776         var->rotate = def_rotate;
1777
1778         if (display) {
1779                 u16 w, h;
1780                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1781
1782                 display->driver->get_resolution(display, &w, &h);
1783
1784                 if (rotation == FB_ROTATE_CW ||
1785                                 rotation == FB_ROTATE_CCW) {
1786                         var->xres = h;
1787                         var->yres = w;
1788                 } else {
1789                         var->xres = w;
1790                         var->yres = h;
1791                 }
1792
1793                 var->xres_virtual = var->xres;
1794                 var->yres_virtual = var->yres;
1795
1796                 if (!var->bits_per_pixel) {
1797                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1798                         case 16:
1799                                 var->bits_per_pixel = 16;
1800                                 break;
1801                         case 24:
1802                                 var->bits_per_pixel = 32;
1803                                 break;
1804                         default:
1805                                 dev_err(fbdev->dev, "illegal display "
1806                                                 "bpp\n");
1807                                 return -EINVAL;
1808                         }
1809                 }
1810         } else {
1811                 /* if there's no display, let's just guess some basic values */
1812                 var->xres = 320;
1813                 var->yres = 240;
1814                 var->xres_virtual = var->xres;
1815                 var->yres_virtual = var->yres;
1816                 if (!var->bits_per_pixel)
1817                         var->bits_per_pixel = 16;
1818         }
1819
1820         r = check_fb_var(fbi, var);
1821         if (r)
1822                 goto err;
1823
1824         set_fb_fix(fbi);
1825         r = setup_vrfb_rotation(fbi);
1826         if (r)
1827                 goto err;
1828
1829         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1830         if (r)
1831                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1832
1833 err:
1834         return r;
1835 }
1836
1837 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1838 {
1839         fb_dealloc_cmap(&fbi->cmap);
1840 }
1841
1842
1843 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1844 {
1845         int i;
1846
1847         DBG("free_resources\n");
1848
1849         if (fbdev == NULL)
1850                 return;
1851
1852         for (i = 0; i < fbdev->num_fbs; i++)
1853                 unregister_framebuffer(fbdev->fbs[i]);
1854
1855         /* free the reserved fbmem */
1856         omapfb_free_all_fbmem(fbdev);
1857
1858         for (i = 0; i < fbdev->num_fbs; i++) {
1859                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1860                 framebuffer_release(fbdev->fbs[i]);
1861         }
1862
1863         for (i = 0; i < fbdev->num_displays; i++) {
1864                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1865
1866                 if (fbdev->displays[i].auto_update_work_enabled)
1867                         omapfb_stop_auto_update(fbdev, dssdev);
1868
1869                 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1870                         dssdev->driver->disable(dssdev);
1871
1872                 omap_dss_put_device(dssdev);
1873         }
1874
1875         if (fbdev->auto_update_wq != NULL) {
1876                 flush_workqueue(fbdev->auto_update_wq);
1877                 destroy_workqueue(fbdev->auto_update_wq);
1878                 fbdev->auto_update_wq = NULL;
1879         }
1880
1881         dev_set_drvdata(fbdev->dev, NULL);
1882 }
1883
1884 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1885 {
1886         int r, i;
1887
1888         fbdev->num_fbs = 0;
1889
1890         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1891
1892         /* allocate fb_infos */
1893         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1894                 struct fb_info *fbi;
1895                 struct omapfb_info *ofbi;
1896
1897                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1898                                 fbdev->dev);
1899
1900                 if (fbi == NULL) {
1901                         dev_err(fbdev->dev,
1902                                 "unable to allocate memory for plane info\n");
1903                         return -ENOMEM;
1904                 }
1905
1906                 clear_fb_info(fbi);
1907
1908                 fbdev->fbs[i] = fbi;
1909
1910                 ofbi = FB2OFB(fbi);
1911                 ofbi->fbdev = fbdev;
1912                 ofbi->id = i;
1913
1914                 ofbi->region = &fbdev->regions[i];
1915                 ofbi->region->id = i;
1916                 init_rwsem(&ofbi->region->lock);
1917
1918                 /* assign these early, so that fb alloc can use them */
1919                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1920                         OMAP_DSS_ROT_DMA;
1921                 ofbi->mirror = def_mirror;
1922
1923                 fbdev->num_fbs++;
1924         }
1925
1926         DBG("fb_infos allocated\n");
1927
1928         /* assign overlays for the fbs */
1929         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1930                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1931
1932                 ofbi->overlays[0] = fbdev->overlays[i];
1933                 ofbi->num_overlays = 1;
1934         }
1935
1936         /* allocate fb memories */
1937         r = omapfb_allocate_all_fbs(fbdev);
1938         if (r) {
1939                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1940                 return r;
1941         }
1942
1943         DBG("fbmems allocated\n");
1944
1945         /* setup fb_infos */
1946         for (i = 0; i < fbdev->num_fbs; i++) {
1947                 struct fb_info *fbi = fbdev->fbs[i];
1948                 struct omapfb_info *ofbi = FB2OFB(fbi);
1949
1950                 omapfb_get_mem_region(ofbi->region);
1951                 r = omapfb_fb_init(fbdev, fbi);
1952                 omapfb_put_mem_region(ofbi->region);
1953
1954                 if (r) {
1955                         dev_err(fbdev->dev, "failed to setup fb_info\n");
1956                         return r;
1957                 }
1958         }
1959
1960         for (i = 0; i < fbdev->num_fbs; i++) {
1961                 struct fb_info *fbi = fbdev->fbs[i];
1962                 struct omapfb_info *ofbi = FB2OFB(fbi);
1963
1964                 if (ofbi->region->size == 0)
1965                         continue;
1966
1967                 omapfb_clear_fb(fbi);
1968         }
1969
1970         DBG("fb_infos initialized\n");
1971
1972         for (i = 0; i < fbdev->num_fbs; i++) {
1973                 r = register_framebuffer(fbdev->fbs[i]);
1974                 if (r != 0) {
1975                         dev_err(fbdev->dev,
1976                                 "registering framebuffer %d failed\n", i);
1977                         return r;
1978                 }
1979         }
1980
1981         DBG("framebuffers registered\n");
1982
1983         for (i = 0; i < fbdev->num_fbs; i++) {
1984                 struct fb_info *fbi = fbdev->fbs[i];
1985                 struct omapfb_info *ofbi = FB2OFB(fbi);
1986
1987                 omapfb_get_mem_region(ofbi->region);
1988                 r = omapfb_apply_changes(fbi, 1);
1989                 omapfb_put_mem_region(ofbi->region);
1990
1991                 if (r) {
1992                         dev_err(fbdev->dev, "failed to change mode\n");
1993                         return r;
1994                 }
1995         }
1996
1997         /* Enable fb0 */
1998         if (fbdev->num_fbs > 0) {
1999                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2000
2001                 if (ofbi->num_overlays > 0) {
2002                         struct omap_overlay *ovl = ofbi->overlays[0];
2003
2004                         ovl->manager->apply(ovl->manager);
2005
2006                         r = omapfb_overlay_enable(ovl, 1);
2007
2008                         if (r) {
2009                                 dev_err(fbdev->dev,
2010                                                 "failed to enable overlay\n");
2011                                 return r;
2012                         }
2013                 }
2014         }
2015
2016         DBG("create_framebuffers done\n");
2017
2018         return 0;
2019 }
2020
2021 static int omapfb_mode_to_timings(const char *mode_str,
2022                 struct omap_dss_device *display,
2023                 struct omap_video_timings *timings, u8 *bpp)
2024 {
2025         struct fb_info *fbi;
2026         struct fb_var_screeninfo *var;
2027         struct fb_ops *fbops;
2028         int r;
2029
2030 #ifdef CONFIG_OMAP2_DSS_VENC
2031         if (strcmp(mode_str, "pal") == 0) {
2032                 *timings = omap_dss_pal_timings;
2033                 *bpp = 24;
2034                 return 0;
2035         } else if (strcmp(mode_str, "ntsc") == 0) {
2036                 *timings = omap_dss_ntsc_timings;
2037                 *bpp = 24;
2038                 return 0;
2039         }
2040 #endif
2041
2042         /* this is quite a hack, but I wanted to use the modedb and for
2043          * that we need fb_info and var, so we create dummy ones */
2044
2045         *bpp = 0;
2046         fbi = NULL;
2047         var = NULL;
2048         fbops = NULL;
2049
2050         fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2051         if (fbi == NULL) {
2052                 r = -ENOMEM;
2053                 goto err;
2054         }
2055
2056         var = kzalloc(sizeof(*var), GFP_KERNEL);
2057         if (var == NULL) {
2058                 r = -ENOMEM;
2059                 goto err;
2060         }
2061
2062         fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2063         if (fbops == NULL) {
2064                 r = -ENOMEM;
2065                 goto err;
2066         }
2067
2068         fbi->fbops = fbops;
2069
2070         r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2071         if (r == 0) {
2072                 r = -EINVAL;
2073                 goto err;
2074         }
2075
2076         if (display->driver->get_timings) {
2077                 display->driver->get_timings(display, timings);
2078         } else {
2079                 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2080                 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2081                 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2082         }
2083
2084         timings->pixel_clock = PICOS2KHZ(var->pixclock);
2085         timings->hbp = var->left_margin;
2086         timings->hfp = var->right_margin;
2087         timings->vbp = var->upper_margin;
2088         timings->vfp = var->lower_margin;
2089         timings->hsw = var->hsync_len;
2090         timings->vsw = var->vsync_len;
2091         timings->x_res = var->xres;
2092         timings->y_res = var->yres;
2093         timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2094                                 OMAPDSS_SIG_ACTIVE_HIGH :
2095                                 OMAPDSS_SIG_ACTIVE_LOW;
2096         timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2097                                 OMAPDSS_SIG_ACTIVE_HIGH :
2098                                 OMAPDSS_SIG_ACTIVE_LOW;
2099         timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2100
2101         switch (var->bits_per_pixel) {
2102         case 16:
2103                 *bpp = 16;
2104                 break;
2105         case 24:
2106         case 32:
2107         default:
2108                 *bpp = 24;
2109                 break;
2110         }
2111
2112         r = 0;
2113
2114 err:
2115         kfree(fbi);
2116         kfree(var);
2117         kfree(fbops);
2118
2119         return r;
2120 }
2121
2122 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2123                 struct omap_dss_device *display, char *mode_str)
2124 {
2125         int r;
2126         u8 bpp;
2127         struct omap_video_timings timings, temp_timings;
2128         struct omapfb_display_data *d;
2129
2130         r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2131         if (r)
2132                 return r;
2133
2134         d = get_display_data(fbdev, display);
2135         d->bpp_override = bpp;
2136
2137         if (display->driver->check_timings) {
2138                 r = display->driver->check_timings(display, &timings);
2139                 if (r)
2140                         return r;
2141         } else {
2142                 /* If check_timings is not present compare xres and yres */
2143                 if (display->driver->get_timings) {
2144                         display->driver->get_timings(display, &temp_timings);
2145
2146                         if (temp_timings.x_res != timings.x_res ||
2147                                 temp_timings.y_res != timings.y_res)
2148                                 return -EINVAL;
2149                 }
2150         }
2151
2152         if (display->driver->set_timings)
2153                         display->driver->set_timings(display, &timings);
2154
2155         return 0;
2156 }
2157
2158 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2159                 struct omap_dss_device *dssdev)
2160 {
2161         struct omapfb_display_data *d;
2162
2163         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2164
2165         d = get_display_data(fbdev, dssdev);
2166
2167         if (d->bpp_override != 0)
2168                 return d->bpp_override;
2169
2170         return dssdev->driver->get_recommended_bpp(dssdev);
2171 }
2172
2173 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2174 {
2175         char *str, *options, *this_opt;
2176         int r = 0;
2177
2178         str = kstrdup(def_mode, GFP_KERNEL);
2179         if (!str)
2180                 return -ENOMEM;
2181         options = str;
2182
2183         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2184                 char *p, *display_str, *mode_str;
2185                 struct omap_dss_device *display;
2186                 int i;
2187
2188                 p = strchr(this_opt, ':');
2189                 if (!p) {
2190                         r = -EINVAL;
2191                         break;
2192                 }
2193
2194                 *p = 0;
2195                 display_str = this_opt;
2196                 mode_str = p + 1;
2197
2198                 display = NULL;
2199                 for (i = 0; i < fbdev->num_displays; ++i) {
2200                         if (strcmp(fbdev->displays[i].dssdev->name,
2201                                                 display_str) == 0) {
2202                                 display = fbdev->displays[i].dssdev;
2203                                 break;
2204                         }
2205                 }
2206
2207                 if (!display) {
2208                         r = -EINVAL;
2209                         break;
2210                 }
2211
2212                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2213                 if (r)
2214                         break;
2215         }
2216
2217         kfree(str);
2218
2219         return r;
2220 }
2221
2222 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2223                 struct omap_dss_device *display,
2224                 struct omap_video_timings *t)
2225 {
2226         if (display->driver->get_timings) {
2227                 display->driver->get_timings(display, t);
2228         } else {
2229                 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2230                 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2231                 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;
2232         }
2233
2234         t->x_res = m->xres;
2235         t->y_res = m->yres;
2236         t->pixel_clock = PICOS2KHZ(m->pixclock);
2237         t->hsw = m->hsync_len;
2238         t->hfp = m->right_margin;
2239         t->hbp = m->left_margin;
2240         t->vsw = m->vsync_len;
2241         t->vfp = m->lower_margin;
2242         t->vbp = m->upper_margin;
2243         t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2244                                 OMAPDSS_SIG_ACTIVE_HIGH :
2245                                 OMAPDSS_SIG_ACTIVE_LOW;
2246         t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2247                                 OMAPDSS_SIG_ACTIVE_HIGH :
2248                                 OMAPDSS_SIG_ACTIVE_LOW;
2249         t->interlace = m->vmode & FB_VMODE_INTERLACED;
2250 }
2251
2252 static int omapfb_find_best_mode(struct omap_dss_device *display,
2253                 struct omap_video_timings *timings)
2254 {
2255         struct fb_monspecs *specs;
2256         u8 *edid;
2257         int r, i, best_idx, len;
2258
2259         if (!display->driver->read_edid)
2260                 return -ENODEV;
2261
2262         len = 0x80 * 2;
2263         edid = kmalloc(len, GFP_KERNEL);
2264         if (edid == NULL)
2265                 return -ENOMEM;
2266
2267         r = display->driver->read_edid(display, edid, len);
2268         if (r < 0)
2269                 goto err1;
2270
2271         specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2272         if (specs == NULL) {
2273                 r = -ENOMEM;
2274                 goto err1;
2275         }
2276
2277         fb_edid_to_monspecs(edid, specs);
2278
2279         best_idx = -1;
2280
2281         for (i = 0; i < specs->modedb_len; ++i) {
2282                 struct fb_videomode *m;
2283                 struct omap_video_timings t;
2284
2285                 m = &specs->modedb[i];
2286
2287                 if (m->pixclock == 0)
2288                         continue;
2289
2290                 /* skip repeated pixel modes */
2291                 if (m->xres == 2880 || m->xres == 1440)
2292                         continue;
2293
2294                 if (m->vmode & FB_VMODE_INTERLACED ||
2295                                 m->vmode & FB_VMODE_DOUBLE)
2296                         continue;
2297
2298                 fb_videomode_to_omap_timings(m, display, &t);
2299
2300                 r = display->driver->check_timings(display, &t);
2301                 if (r == 0) {
2302                         best_idx = i;
2303                         break;
2304                 }
2305         }
2306
2307         if (best_idx == -1) {
2308                 r = -ENOENT;
2309                 goto err2;
2310         }
2311
2312         fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2313                 timings);
2314
2315         r = 0;
2316
2317 err2:
2318         fb_destroy_modedb(specs->modedb);
2319         kfree(specs);
2320 err1:
2321         kfree(edid);
2322
2323         return r;
2324 }
2325
2326 static int omapfb_init_display(struct omapfb2_device *fbdev,
2327                 struct omap_dss_device *dssdev)
2328 {
2329         struct omap_dss_driver *dssdrv = dssdev->driver;
2330         struct omapfb_display_data *d;
2331         int r;
2332
2333         r = dssdrv->enable(dssdev);
2334         if (r) {
2335                 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2336                                 dssdev->name);
2337                 return r;
2338         }
2339
2340         d = get_display_data(fbdev, dssdev);
2341
2342         d->fbdev = fbdev;
2343
2344         if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2345                 u16 w, h;
2346
2347                 if (auto_update) {
2348                         omapfb_start_auto_update(fbdev, dssdev);
2349                         d->update_mode = OMAPFB_AUTO_UPDATE;
2350                 } else {
2351                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2352                 }
2353
2354                 if (dssdrv->enable_te) {
2355                         r = dssdrv->enable_te(dssdev, 1);
2356                         if (r) {
2357                                 dev_err(fbdev->dev, "Failed to set TE\n");
2358                                 return r;
2359                         }
2360                 }
2361
2362                 dssdrv->get_resolution(dssdev, &w, &h);
2363                 r = dssdrv->update(dssdev, 0, 0, w, h);
2364                 if (r) {
2365                         dev_err(fbdev->dev,
2366                                         "Failed to update display\n");
2367                         return r;
2368                 }
2369         } else {
2370                 d->update_mode = OMAPFB_AUTO_UPDATE;
2371         }
2372
2373         return 0;
2374 }
2375
2376 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2377                 struct omap_dss_device *def_dssdev)
2378 {
2379         int i, r;
2380         struct omap_overlay_manager *mgr;
2381
2382         if (!def_dssdev->output) {
2383                 dev_err(fbdev->dev, "no output for the default display\n");
2384                 return -EINVAL;
2385         }
2386
2387         for (i = 0; i < fbdev->num_displays; ++i) {
2388                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2389                 struct omap_dss_output *out = dssdev->output;
2390
2391                 mgr = omap_dss_get_overlay_manager(out->dispc_channel);
2392
2393                 if (!mgr || !out)
2394                         continue;
2395
2396                 if (mgr->output)
2397                         mgr->unset_output(mgr);
2398
2399                 mgr->set_output(mgr, out);
2400         }
2401
2402         mgr = def_dssdev->output->manager;
2403
2404         if (!mgr) {
2405                 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2406                 return -EINVAL;
2407         }
2408
2409         for (i = 0; i < fbdev->num_overlays; i++) {
2410                 struct omap_overlay *ovl = fbdev->overlays[i];
2411
2412                 if (ovl->manager)
2413                         ovl->unset_manager(ovl);
2414
2415                 r = ovl->set_manager(ovl, mgr);
2416                 if (r)
2417                         dev_warn(fbdev->dev,
2418                                         "failed to connect overlay %s to manager %s\n",
2419                                         ovl->name, mgr->name);
2420         }
2421
2422         return 0;
2423 }
2424
2425 static int omapfb_probe(struct platform_device *pdev)
2426 {
2427         struct omapfb2_device *fbdev = NULL;
2428         int r = 0;
2429         int i;
2430         struct omap_dss_device *def_display;
2431         struct omap_dss_device *dssdev;
2432
2433         DBG("omapfb_probe\n");
2434
2435         if (pdev->num_resources != 0) {
2436                 dev_err(&pdev->dev, "probed for an unknown device\n");
2437                 r = -ENODEV;
2438                 goto err0;
2439         }
2440
2441         fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2442                         GFP_KERNEL);
2443         if (fbdev == NULL) {
2444                 r = -ENOMEM;
2445                 goto err0;
2446         }
2447
2448         if (def_vrfb && !omap_vrfb_supported()) {
2449                 def_vrfb = 0;
2450                 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2451                                 "ignoring the module parameter vrfb=y\n");
2452         }
2453
2454         r = omapdss_compat_init();
2455         if (r)
2456                 goto err0;
2457
2458         mutex_init(&fbdev->mtx);
2459
2460         fbdev->dev = &pdev->dev;
2461         platform_set_drvdata(pdev, fbdev);
2462
2463         fbdev->num_displays = 0;
2464         dssdev = NULL;
2465         for_each_dss_dev(dssdev) {
2466                 struct omapfb_display_data *d;
2467
2468                 omap_dss_get_device(dssdev);
2469
2470                 if (!dssdev->driver) {
2471                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2472                                 dssdev->name);
2473                         omap_dss_put_device(dssdev);
2474                         continue;
2475                 }
2476
2477                 d = &fbdev->displays[fbdev->num_displays++];
2478                 d->dssdev = dssdev;
2479                 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2480                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2481                 else
2482                         d->update_mode = OMAPFB_AUTO_UPDATE;
2483         }
2484
2485         if (fbdev->num_displays == 0) {
2486                 dev_err(&pdev->dev, "no displays\n");
2487                 r = -EPROBE_DEFER;
2488                 goto cleanup;
2489         }
2490
2491         fbdev->num_overlays = omap_dss_get_num_overlays();
2492         for (i = 0; i < fbdev->num_overlays; i++)
2493                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2494
2495         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2496         for (i = 0; i < fbdev->num_managers; i++)
2497                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2498
2499         def_display = NULL;
2500
2501         for (i = 0; i < fbdev->num_displays; ++i) {
2502                 struct omap_dss_device *dssdev;
2503                 const char *def_name;
2504
2505                 def_name = omapdss_get_default_display_name();
2506
2507                 dssdev = fbdev->displays[i].dssdev;
2508
2509                 if (def_name == NULL ||
2510                         (dssdev->name && strcmp(def_name, dssdev->name) == 0)) {
2511                         def_display = dssdev;
2512                         break;
2513                 }
2514         }
2515
2516         if (def_display == NULL) {
2517                 dev_err(fbdev->dev, "failed to find default display\n");
2518                 r = -EINVAL;
2519                 goto cleanup;
2520         }
2521
2522         r = omapfb_init_connections(fbdev, def_display);
2523         if (r) {
2524                 dev_err(fbdev->dev, "failed to init overlay connections\n");
2525                 goto cleanup;
2526         }
2527
2528         if (def_mode && strlen(def_mode) > 0) {
2529                 if (omapfb_parse_def_modes(fbdev))
2530                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2531         } else if (def_display && def_display->driver->set_timings &&
2532                         def_display->driver->check_timings) {
2533                 struct omap_video_timings t;
2534
2535                 r = omapfb_find_best_mode(def_display, &t);
2536
2537                 if (r == 0)
2538                         def_display->driver->set_timings(def_display, &t);
2539         }
2540
2541         r = omapfb_create_framebuffers(fbdev);
2542         if (r)
2543                 goto cleanup;
2544
2545         for (i = 0; i < fbdev->num_managers; i++) {
2546                 struct omap_overlay_manager *mgr;
2547                 mgr = fbdev->managers[i];
2548                 r = mgr->apply(mgr);
2549                 if (r)
2550                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2551         }
2552
2553         DBG("mgr->apply'ed\n");
2554
2555         if (def_display) {
2556                 r = omapfb_init_display(fbdev, def_display);
2557                 if (r) {
2558                         dev_err(fbdev->dev,
2559                                         "failed to initialize default "
2560                                         "display\n");
2561                         goto cleanup;
2562                 }
2563         }
2564
2565         DBG("create sysfs for fbs\n");
2566         r = omapfb_create_sysfs(fbdev);
2567         if (r) {
2568                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2569                 goto cleanup;
2570         }
2571
2572         return 0;
2573
2574 cleanup:
2575         omapfb_free_resources(fbdev);
2576         omapdss_compat_uninit();
2577 err0:
2578         dev_err(&pdev->dev, "failed to setup omapfb\n");
2579         return r;
2580 }
2581
2582 static int __exit omapfb_remove(struct platform_device *pdev)
2583 {
2584         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2585
2586         /* FIXME: wait till completion of pending events */
2587
2588         omapfb_remove_sysfs(fbdev);
2589
2590         omapfb_free_resources(fbdev);
2591
2592         omapdss_compat_uninit();
2593
2594         return 0;
2595 }
2596
2597 static struct platform_driver omapfb_driver = {
2598         .probe          = omapfb_probe,
2599         .remove         = __exit_p(omapfb_remove),
2600         .driver         = {
2601                 .name   = "omapfb",
2602                 .owner  = THIS_MODULE,
2603         },
2604 };
2605
2606 module_param_named(mode, def_mode, charp, 0);
2607 module_param_named(vram, def_vram, charp, 0);
2608 module_param_named(rotate, def_rotate, int, 0);
2609 module_param_named(vrfb, def_vrfb, bool, 0);
2610 module_param_named(mirror, def_mirror, bool, 0);
2611
2612 module_platform_driver(omapfb_driver);
2613
2614 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2615 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2616 MODULE_LICENSE("GPL v2");