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

   1 /*
   2  * linux/drivers/video/omap2/omapfb-main.c
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   6  *
   7  * Some code and ideas taken from drivers/video/omap/ driver
   8  * by Imre Deak.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published by
  12  * the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/slab.h>
  26 #include <linux/fb.h>
  27 #include <linux/dma-mapping.h>
  28 #include <linux/vmalloc.h>
  29 #include <linux/device.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/omapfb.h>
  32
  33 #include <video/omapdss.h>
  34 #include <plat/vram.h>
  35 #include <plat/vrfb.h>
  36
  37 #include "omapfb.h"
  38
  39 #define MODULE_NAME     "omapfb"
  40
  41 #define OMAPFB_PLANE_XRES_MIN           8
  42 #define OMAPFB_PLANE_YRES_MIN           8
  43
  44 static char *def_mode;
  45 static char *def_vram;
  46 static int def_vrfb;
  47 static int def_rotate;
  48 static int def_mirror;
  49 static bool auto_update;
  50 static unsigned int auto_update_freq;
  51 module_param(auto_update, bool, 0);
  52 module_param(auto_update_freq, uint, 0644);
  53
  54 #ifdef DEBUG
  55 unsigned int omapfb_debug;
  56 module_param_named(debug, omapfb_debug, bool, 0644);
  57 static unsigned int omapfb_test_pattern;
  58 module_param_named(test, omapfb_test_pattern, bool, 0644);
  59 #endif
  60
  61 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
  62 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
  63                 struct omap_dss_device *dssdev);
  64
  65 #ifdef DEBUG
  66 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  67 {
  68         struct fb_var_screeninfo *var = &fbi->var;
  69         struct fb_fix_screeninfo *fix = &fbi->fix;
  70         void __iomem *addr = fbi->screen_base;
  71         const unsigned bytespp = var->bits_per_pixel >> 3;
  72         const unsigned line_len = fix->line_length / bytespp;
  73
  74         int r = (color >> 16) & 0xff;
  75         int g = (color >> 8) & 0xff;
  76         int b = (color >> 0) & 0xff;
  77
  78         if (var->bits_per_pixel == 16) {
  79                 u16 __iomem *p = (u16 __iomem *)addr;
  80                 p += y * line_len + x;
  81
  82                 r = r * 32 / 256;
  83                 g = g * 64 / 256;
  84                 b = b * 32 / 256;
  85
  86                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  87         } else if (var->bits_per_pixel == 24) {
  88                 u8 __iomem *p = (u8 __iomem *)addr;
  89                 p += (y * line_len + x) * 3;
  90
  91                 __raw_writeb(b, p + 0);
  92                 __raw_writeb(g, p + 1);
  93                 __raw_writeb(r, p + 2);
  94         } else if (var->bits_per_pixel == 32) {
  95                 u32 __iomem *p = (u32 __iomem *)addr;
  96                 p += y * line_len + x;
  97                 __raw_writel(color, p);
  98         }
  99 }
 100
 101 static void fill_fb(struct fb_info *fbi)
 102 {
 103         struct fb_var_screeninfo *var = &fbi->var;
 104         const short w = var->xres_virtual;
 105         const short h = var->yres_virtual;
 106         void __iomem *addr = fbi->screen_base;
 107         int y, x;
 108
 109         if (!addr)
 110                 return;
 111
 112         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 113
 114         for (y = 0; y < h; y++) {
 115                 for (x = 0; x < w; x++) {
 116                         if (x < 20 && y < 20)
 117                                 draw_pixel(fbi, x, y, 0xffffff);
 118                         else if (x < 20 && (y > 20 && y < h - 20))
 119                                 draw_pixel(fbi, x, y, 0xff);
 120                         else if (y < 20 && (x > 20 && x < w - 20))
 121                                 draw_pixel(fbi, x, y, 0xff00);
 122                         else if (x > w - 20 && (y > 20 && y < h - 20))
 123                                 draw_pixel(fbi, x, y, 0xff0000);
 124                         else if (y > h - 20 && (x > 20 && x < w - 20))
 125                                 draw_pixel(fbi, x, y, 0xffff00);
 126                         else if (x == 20 || x == w - 20 ||
 127                                         y == 20 || y == h - 20)
 128                                 draw_pixel(fbi, x, y, 0xffffff);
 129                         else if (x == y || w - x == h - y)
 130                                 draw_pixel(fbi, x, y, 0xff00ff);
 131                         else if (w - x == y || x == h - y)
 132                                 draw_pixel(fbi, x, y, 0x00ffff);
 133                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 134                                 int t = x * 3 / w;
 135                                 unsigned r = 0, g = 0, b = 0;
 136                                 unsigned c;
 137                                 if (var->bits_per_pixel == 16) {
 138                                         if (t == 0)
 139                                                 b = (y % 32) * 256 / 32;
 140                                         else if (t == 1)
 141                                                 g = (y % 64) * 256 / 64;
 142                                         else if (t == 2)
 143                                                 r = (y % 32) * 256 / 32;
 144                                 } else {
 145                                         if (t == 0)
 146                                                 b = (y % 256);
 147                                         else if (t == 1)
 148                                                 g = (y % 256);
 149                                         else if (t == 2)
 150                                                 r = (y % 256);
 151                                 }
 152                                 c = (r << 16) | (g << 8) | (b << 0);
 153                                 draw_pixel(fbi, x, y, c);
 154                         } else {
 155                                 draw_pixel(fbi, x, y, 0);
 156                         }
 157                 }
 158         }
 159 }
 160 #endif
 161
 162 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
 163 {
 164         const struct vrfb *vrfb = &ofbi->region->vrfb;
 165         unsigned offset;
 166
 167         switch (rot) {
 168         case FB_ROTATE_UR:
 169                 offset = 0;
 170                 break;
 171         case FB_ROTATE_CW:
 172                 offset = vrfb->yoffset;
 173                 break;
 174         case FB_ROTATE_UD:
 175                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 176                 break;
 177         case FB_ROTATE_CCW:
 178                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 179                 break;
 180         default:
 181                 BUG();
 182         }
 183
 184         offset *= vrfb->bytespp;
 185
 186         return offset;
 187 }
 188
 189 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
 190 {
 191         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 192                 return ofbi->region->vrfb.paddr[rot]
 193                         + omapfb_get_vrfb_offset(ofbi, rot);
 194         } else {
 195                 return ofbi->region->paddr;
 196         }
 197 }
 198
 199 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
 200 {
 201         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 202                 return ofbi->region->vrfb.paddr[0];
 203         else
 204                 return ofbi->region->paddr;
 205 }
 206
 207 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
 208 {
 209         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 210                 return ofbi->region->vrfb.vaddr[0];
 211         else
 212                 return ofbi->region->vaddr;
 213 }
 214
 215 static struct omapfb_colormode omapfb_colormodes[] = {
 216         {
 217                 .dssmode = OMAP_DSS_COLOR_UYVY,
 218                 .bits_per_pixel = 16,
 219                 .nonstd = OMAPFB_COLOR_YUV422,
 220         }, {
 221                 .dssmode = OMAP_DSS_COLOR_YUV2,
 222                 .bits_per_pixel = 16,
 223                 .nonstd = OMAPFB_COLOR_YUY422,
 224         }, {
 225                 .dssmode = OMAP_DSS_COLOR_ARGB16,
 226                 .bits_per_pixel = 16,
 227                 .red    = { .length = 4, .offset = 8, .msb_right = 0 },
 228                 .green  = { .length = 4, .offset = 4, .msb_right = 0 },
 229                 .blue   = { .length = 4, .offset = 0, .msb_right = 0 },
 230                 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
 231         }, {
 232                 .dssmode = OMAP_DSS_COLOR_RGB16,
 233                 .bits_per_pixel = 16,
 234                 .red    = { .length = 5, .offset = 11, .msb_right = 0 },
 235                 .green  = { .length = 6, .offset = 5, .msb_right = 0 },
 236                 .blue   = { .length = 5, .offset = 0, .msb_right = 0 },
 237                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 238         }, {
 239                 .dssmode = OMAP_DSS_COLOR_RGB24P,
 240                 .bits_per_pixel = 24,
 241                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 242                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 243                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 244                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 245         }, {
 246                 .dssmode = OMAP_DSS_COLOR_RGB24U,
 247                 .bits_per_pixel = 32,
 248                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 249                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 250                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 251                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 252         }, {
 253                 .dssmode = OMAP_DSS_COLOR_ARGB32,
 254                 .bits_per_pixel = 32,
 255                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 256                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 257                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 258                 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
 259         }, {
 260                 .dssmode = OMAP_DSS_COLOR_RGBA32,
 261                 .bits_per_pixel = 32,
 262                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 263                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 264                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 265                 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
 266         }, {
 267                 .dssmode = OMAP_DSS_COLOR_RGBX32,
 268                 .bits_per_pixel = 32,
 269                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 270                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 271                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 272                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 273         },
 274 };
 275
 276 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
 277                 struct omapfb_colormode *color)
 278 {
 279         bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
 280         {
 281                 return f1->length == f2->length &&
 282                         f1->offset == f2->offset &&
 283                         f1->msb_right == f2->msb_right;
 284         }
 285
 286         if (var->bits_per_pixel == 0 ||
 287                         var->red.length == 0 ||
 288                         var->blue.length == 0 ||
 289                         var->green.length == 0)
 290                 return 0;
 291
 292         return var->bits_per_pixel == color->bits_per_pixel &&
 293                 cmp_component(&var->red, &color->red) &&
 294                 cmp_component(&var->green, &color->green) &&
 295                 cmp_component(&var->blue, &color->blue) &&
 296                 cmp_component(&var->transp, &color->transp);
 297 }
 298
 299 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
 300                 struct omapfb_colormode *color)
 301 {
 302         var->bits_per_pixel = color->bits_per_pixel;
 303         var->nonstd = color->nonstd;
 304         var->red = color->red;
 305         var->green = color->green;
 306         var->blue = color->blue;
 307         var->transp = color->transp;
 308 }
 309
 310 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
 311                 enum omap_color_mode *mode)
 312 {
 313         enum omap_color_mode dssmode;
 314         int i;
 315
 316         /* first match with nonstd field */
 317         if (var->nonstd) {
 318                 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 319                         struct omapfb_colormode *m = &omapfb_colormodes[i];
 320                         if (var->nonstd == m->nonstd) {
 321                                 assign_colormode_to_var(var, m);
 322                                 *mode = m->dssmode;
 323                                 return 0;
 324                         }
 325                 }
 326
 327                 return -EINVAL;
 328         }
 329
 330         /* then try exact match of bpp and colors */
 331         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 332                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 333                 if (cmp_var_to_colormode(var, m)) {
 334                         assign_colormode_to_var(var, m);
 335                         *mode = m->dssmode;
 336                         return 0;
 337                 }
 338         }
 339
 340         /* match with bpp if user has not filled color fields
 341          * properly */
 342         switch (var->bits_per_pixel) {
 343         case 1:
 344                 dssmode = OMAP_DSS_COLOR_CLUT1;
 345                 break;
 346         case 2:
 347                 dssmode = OMAP_DSS_COLOR_CLUT2;
 348                 break;
 349         case 4:
 350                 dssmode = OMAP_DSS_COLOR_CLUT4;
 351                 break;
 352         case 8:
 353                 dssmode = OMAP_DSS_COLOR_CLUT8;
 354                 break;
 355         case 12:
 356                 dssmode = OMAP_DSS_COLOR_RGB12U;
 357                 break;
 358         case 16:
 359                 dssmode = OMAP_DSS_COLOR_RGB16;
 360                 break;
 361         case 24:
 362                 dssmode = OMAP_DSS_COLOR_RGB24P;
 363                 break;
 364         case 32:
 365                 dssmode = OMAP_DSS_COLOR_RGB24U;
 366                 break;
 367         default:
 368                 return -EINVAL;
 369         }
 370
 371         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 372                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 373                 if (dssmode == m->dssmode) {
 374                         assign_colormode_to_var(var, m);
 375                         *mode = m->dssmode;
 376                         return 0;
 377                 }
 378         }
 379
 380         return -EINVAL;
 381 }
 382
 383 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
 384 {
 385         int xres_min = OMAPFB_PLANE_XRES_MIN;
 386         int xres_max = 2048;
 387         int yres_min = OMAPFB_PLANE_YRES_MIN;
 388         int yres_max = 2048;
 389
 390         /* XXX: some applications seem to set virtual res to 0. */
 391         if (var->xres_virtual == 0)
 392                 var->xres_virtual = var->xres;
 393
 394         if (var->yres_virtual == 0)
 395                 var->yres_virtual = var->yres;
 396
 397         if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
 398                 return -EINVAL;
 399
 400         if (var->xres < xres_min)
 401                 var->xres = xres_min;
 402         if (var->yres < yres_min)
 403                 var->yres = yres_min;
 404         if (var->xres > xres_max)
 405                 var->xres = xres_max;
 406         if (var->yres > yres_max)
 407                 var->yres = yres_max;
 408
 409         if (var->xres > var->xres_virtual)
 410                 var->xres = var->xres_virtual;
 411         if (var->yres > var->yres_virtual)
 412                 var->yres = var->yres_virtual;
 413
 414         return 0;
 415 }
 416
 417 static void shrink_height(unsigned long max_frame_size,
 418                 struct fb_var_screeninfo *var)
 419 {
 420         DBG("can't fit FB into memory, reducing y\n");
 421         var->yres_virtual = max_frame_size /
 422                 (var->xres_virtual * var->bits_per_pixel >> 3);
 423
 424         if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
 425                 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
 426
 427         if (var->yres > var->yres_virtual)
 428                 var->yres = var->yres_virtual;
 429 }
 430
 431 static void shrink_width(unsigned long max_frame_size,
 432                 struct fb_var_screeninfo *var)
 433 {
 434         DBG("can't fit FB into memory, reducing x\n");
 435         var->xres_virtual = max_frame_size / var->yres_virtual /
 436                 (var->bits_per_pixel >> 3);
 437
 438         if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
 439                 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
 440
 441         if (var->xres > var->xres_virtual)
 442                 var->xres = var->xres_virtual;
 443 }
 444
 445 static int check_vrfb_fb_size(unsigned long region_size,
 446                 const struct fb_var_screeninfo *var)
 447 {
 448         unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
 449                 var->yres_virtual, var->bits_per_pixel >> 3);
 450
 451         return min_phys_size > region_size ? -EINVAL : 0;
 452 }
 453
 454 static int check_fb_size(const struct omapfb_info *ofbi,
 455                 struct fb_var_screeninfo *var)
 456 {
 457         unsigned long max_frame_size = ofbi->region->size;
 458         int bytespp = var->bits_per_pixel >> 3;
 459         unsigned long line_size = var->xres_virtual * bytespp;
 460
 461         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 462                 /* One needs to check for both VRFB and OMAPFB limitations. */
 463                 if (check_vrfb_fb_size(max_frame_size, var))
 464                         shrink_height(omap_vrfb_max_height(
 465                                 max_frame_size, var->xres_virtual, bytespp) *
 466                                 line_size, var);
 467
 468                 if (check_vrfb_fb_size(max_frame_size, var)) {
 469                         DBG("cannot fit FB to memory\n");
 470                         return -EINVAL;
 471                 }
 472
 473                 return 0;
 474         }
 475
 476         DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
 477
 478         if (line_size * var->yres_virtual > max_frame_size)
 479                 shrink_height(max_frame_size, var);
 480
 481         if (line_size * var->yres_virtual > max_frame_size) {
 482                 shrink_width(max_frame_size, var);
 483                 line_size = var->xres_virtual * bytespp;
 484         }
 485
 486         if (line_size * var->yres_virtual > max_frame_size) {
 487                 DBG("cannot fit FB to memory\n");
 488                 return -EINVAL;
 489         }
 490
 491         return 0;
 492 }
 493
 494 /*
 495  * Consider if VRFB assisted rotation is in use and if the virtual space for
 496  * the zero degree view needs to be mapped. The need for mapping also acts as
 497  * the trigger for setting up the hardware on the context in question. This
 498  * ensures that one does not attempt to access the virtual view before the
 499  * hardware is serving the address translations.
 500  */
 501 static int setup_vrfb_rotation(struct fb_info *fbi)
 502 {
 503         struct omapfb_info *ofbi = FB2OFB(fbi);
 504         struct omapfb2_mem_region *rg = ofbi->region;
 505         struct vrfb *vrfb = &rg->vrfb;
 506         struct fb_var_screeninfo *var = &fbi->var;
 507         struct fb_fix_screeninfo *fix = &fbi->fix;
 508         unsigned bytespp;
 509         bool yuv_mode;
 510         enum omap_color_mode mode;
 511         int r;
 512         bool reconf;
 513
 514         if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
 515                 return 0;
 516
 517         DBG("setup_vrfb_rotation\n");
 518
 519         r = fb_mode_to_dss_mode(var, &mode);
 520         if (r)
 521                 return r;
 522
 523         bytespp = var->bits_per_pixel >> 3;
 524
 525         yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
 526
 527         /* We need to reconfigure VRFB if the resolution changes, if yuv mode
 528          * is enabled/disabled, or if bytes per pixel changes */
 529
 530         /* XXX we shouldn't allow this when framebuffer is mmapped */
 531
 532         reconf = false;
 533
 534         if (yuv_mode != vrfb->yuv_mode)
 535                 reconf = true;
 536         else if (bytespp != vrfb->bytespp)
 537                 reconf = true;
 538         else if (vrfb->xres != var->xres_virtual ||
 539                         vrfb->yres != var->yres_virtual)
 540                 reconf = true;
 541
 542         if (vrfb->vaddr[0] && reconf) {
 543                 fbi->screen_base = NULL;
 544                 fix->smem_start = 0;
 545                 fix->smem_len = 0;
 546                 iounmap(vrfb->vaddr[0]);
 547                 vrfb->vaddr[0] = NULL;
 548                 DBG("setup_vrfb_rotation: reset fb\n");
 549         }
 550
 551         if (vrfb->vaddr[0])
 552                 return 0;
 553
 554         omap_vrfb_setup(&rg->vrfb, rg->paddr,
 555                         var->xres_virtual,
 556                         var->yres_virtual,
 557                         bytespp, yuv_mode);
 558
 559         /* Now one can ioremap the 0 angle view */
 560         r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
 561         if (r)
 562                 return r;
 563
 564         /* used by open/write in fbmem.c */
 565         fbi->screen_base = ofbi->region->vrfb.vaddr[0];
 566
 567         fix->smem_start = ofbi->region->vrfb.paddr[0];
 568
 569         switch (var->nonstd) {
 570         case OMAPFB_COLOR_YUV422:
 571         case OMAPFB_COLOR_YUY422:
 572                 fix->line_length =
 573                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 574                 break;
 575         default:
 576                 fix->line_length =
 577                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 578                 break;
 579         }
 580
 581         fix->smem_len = var->yres_virtual * fix->line_length;
 582
 583         return 0;
 584 }
 585
 586 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
 587                         struct fb_var_screeninfo *var)
 588 {
 589         int i;
 590
 591         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 592                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 593                 if (dssmode == mode->dssmode) {
 594                         assign_colormode_to_var(var, mode);
 595                         return 0;
 596                 }
 597         }
 598         return -ENOENT;
 599 }
 600
 601 void set_fb_fix(struct fb_info *fbi)
 602 {
 603         struct fb_fix_screeninfo *fix = &fbi->fix;
 604         struct fb_var_screeninfo *var = &fbi->var;
 605         struct omapfb_info *ofbi = FB2OFB(fbi);
 606         struct omapfb2_mem_region *rg = ofbi->region;
 607
 608         DBG("set_fb_fix\n");
 609
 610         /* used by open/write in fbmem.c */
 611         fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
 612
 613         /* used by mmap in fbmem.c */
 614         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 615                 switch (var->nonstd) {
 616                 case OMAPFB_COLOR_YUV422:
 617                 case OMAPFB_COLOR_YUY422:
 618                         fix->line_length =
 619                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 620                         break;
 621                 default:
 622                         fix->line_length =
 623                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 624                         break;
 625                 }
 626
 627                 fix->smem_len = var->yres_virtual * fix->line_length;
 628         } else {
 629                 fix->line_length =
 630                         (var->xres_virtual * var->bits_per_pixel) >> 3;
 631                 fix->smem_len = rg->size;
 632         }
 633
 634         fix->smem_start = omapfb_get_region_paddr(ofbi);
 635
 636         fix->type = FB_TYPE_PACKED_PIXELS;
 637
 638         if (var->nonstd)
 639                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 640         else {
 641                 switch (var->bits_per_pixel) {
 642                 case 32:
 643                 case 24:
 644                 case 16:
 645                 case 12:
 646                         fix->visual = FB_VISUAL_TRUECOLOR;
 647                         /* 12bpp is stored in 16 bits */
 648                         break;
 649                 case 1:
 650                 case 2:
 651                 case 4:
 652                 case 8:
 653                         fix->visual = FB_VISUAL_PSEUDOCOLOR;
 654                         break;
 655                 }
 656         }
 657
 658         fix->accel = FB_ACCEL_NONE;
 659
 660         fix->xpanstep = 1;
 661         fix->ypanstep = 1;
 662 }
 663
 664 /* check new var and possibly modify it to be ok */
 665 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 666 {
 667         struct omapfb_info *ofbi = FB2OFB(fbi);
 668         struct omap_dss_device *display = fb2display(fbi);
 669         enum omap_color_mode mode = 0;
 670         int i;
 671         int r;
 672
 673         DBG("check_fb_var %d\n", ofbi->id);
 674
 675         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 676
 677         r = fb_mode_to_dss_mode(var, &mode);
 678         if (r) {
 679                 DBG("cannot convert var to omap dss mode\n");
 680                 return r;
 681         }
 682
 683         for (i = 0; i < ofbi->num_overlays; ++i) {
 684                 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
 685                         DBG("invalid mode\n");
 686                         return -EINVAL;
 687                 }
 688         }
 689
 690         if (var->rotate > 3)
 691                 return -EINVAL;
 692
 693         if (check_fb_res_bounds(var))
 694                 return -EINVAL;
 695
 696         /* When no memory is allocated ignore the size check */
 697         if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
 698                 return -EINVAL;
 699
 700         if (var->xres + var->xoffset > var->xres_virtual)
 701                 var->xoffset = var->xres_virtual - var->xres;
 702         if (var->yres + var->yoffset > var->yres_virtual)
 703                 var->yoffset = var->yres_virtual - var->yres;
 704
 705         DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
 706                         var->xres, var->yres,
 707                         var->xres_virtual, var->yres_virtual);
 708
 709         if (display && display->driver->get_dimensions) {
 710                 u32 w, h;
 711                 display->driver->get_dimensions(display, &w, &h);
 712                 var->width = DIV_ROUND_CLOSEST(w, 1000);
 713                 var->height = DIV_ROUND_CLOSEST(h, 1000);
 714         } else {
 715                 var->height = -1;
 716                 var->width = -1;
 717         }
 718
 719         var->grayscale          = 0;
 720
 721         if (display && display->driver->get_timings) {
 722                 struct omap_video_timings timings;
 723                 display->driver->get_timings(display, &timings);
 724
 725                 /* pixclock in ps, the rest in pixclock */
 726                 var->pixclock = timings.pixel_clock != 0 ?
 727                         KHZ2PICOS(timings.pixel_clock) :
 728                         0;
 729                 var->left_margin = timings.hbp;
 730                 var->right_margin = timings.hfp;
 731                 var->upper_margin = timings.vbp;
 732                 var->lower_margin = timings.vfp;
 733                 var->hsync_len = timings.hsw;
 734                 var->vsync_len = timings.vsw;
 735         } else {
 736                 var->pixclock = 0;
 737                 var->left_margin = 0;
 738                 var->right_margin = 0;
 739                 var->upper_margin = 0;
 740                 var->lower_margin = 0;
 741                 var->hsync_len = 0;
 742                 var->vsync_len = 0;
 743         }
 744
 745         /* TODO: get these from panel->config */
 746         var->vmode              = FB_VMODE_NONINTERLACED;
 747         var->sync               = 0;
 748
 749         return 0;
 750 }
 751
 752 /*
 753  * ---------------------------------------------------------------------------
 754  * fbdev framework callbacks
 755  * ---------------------------------------------------------------------------
 756  */
 757 static int omapfb_open(struct fb_info *fbi, int user)
 758 {
 759         return 0;
 760 }
 761
 762 static int omapfb_release(struct fb_info *fbi, int user)
 763 {
 764         return 0;
 765 }
 766
 767 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
 768                 const struct fb_fix_screeninfo *fix, int rotation)
 769 {
 770         unsigned offset;
 771
 772         offset = var->yoffset * fix->line_length +
 773                 var->xoffset * (var->bits_per_pixel >> 3);
 774
 775         return offset;
 776 }
 777
 778 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
 779                 const struct fb_fix_screeninfo *fix, int rotation)
 780 {
 781         unsigned offset;
 782
 783         if (rotation == FB_ROTATE_UD)
 784                 offset = (var->yres_virtual - var->yres) *
 785                         fix->line_length;
 786         else if (rotation == FB_ROTATE_CW)
 787                 offset = (var->yres_virtual - var->yres) *
 788                         (var->bits_per_pixel >> 3);
 789         else
 790                 offset = 0;
 791
 792         if (rotation == FB_ROTATE_UR)
 793                 offset += var->yoffset * fix->line_length +
 794                         var->xoffset * (var->bits_per_pixel >> 3);
 795         else if (rotation == FB_ROTATE_UD)
 796                 offset -= var->yoffset * fix->line_length +
 797                         var->xoffset * (var->bits_per_pixel >> 3);
 798         else if (rotation == FB_ROTATE_CW)
 799                 offset -= var->xoffset * fix->line_length +
 800                         var->yoffset * (var->bits_per_pixel >> 3);
 801         else if (rotation == FB_ROTATE_CCW)
 802                 offset += var->xoffset * fix->line_length +
 803                         var->yoffset * (var->bits_per_pixel >> 3);
 804
 805         return offset;
 806 }
 807
 808 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
 809                              const struct fb_var_screeninfo *var,
 810                              const struct fb_fix_screeninfo *fix,
 811                              int rotation, u32 *paddr)
 812 {
 813         u32 data_start_p;
 814         int offset;
 815
 816         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 817                 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
 818         else
 819                 data_start_p = omapfb_get_region_paddr(ofbi);
 820
 821         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 822                 offset = calc_rotation_offset_vrfb(var, fix, rotation);
 823         else
 824                 offset = calc_rotation_offset_dma(var, fix, rotation);
 825
 826         data_start_p += offset;
 827
 828         if (offset)
 829                 DBG("offset %d, %d = %d\n",
 830                     var->xoffset, var->yoffset, offset);
 831
 832         DBG("paddr %x\n", data_start_p);
 833
 834         *paddr = data_start_p;
 835 }
 836
 837 /* setup overlay according to the fb */
 838 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 839                 u16 posx, u16 posy, u16 outw, u16 outh)
 840 {
 841         int r = 0;
 842         struct omapfb_info *ofbi = FB2OFB(fbi);
 843         struct fb_var_screeninfo *var = &fbi->var;
 844         struct fb_fix_screeninfo *fix = &fbi->fix;
 845         enum omap_color_mode mode = 0;
 846         u32 data_start_p = 0;
 847         struct omap_overlay_info info;
 848         int xres, yres;
 849         int screen_width;
 850         int mirror;
 851         int rotation = var->rotate;
 852         int i;
 853
 854         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 855
 856         for (i = 0; i < ofbi->num_overlays; i++) {
 857                 if (ovl != ofbi->overlays[i])
 858                         continue;
 859
 860                 rotation = (rotation + ofbi->rotation[i]) % 4;
 861                 break;
 862         }
 863
 864         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 865                         posx, posy, outw, outh);
 866
 867         if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
 868                 xres = var->yres;
 869                 yres = var->xres;
 870         } else {
 871                 xres = var->xres;
 872                 yres = var->yres;
 873         }
 874
 875         if (ofbi->region->size)
 876                 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
 877
 878         r = fb_mode_to_dss_mode(var, &mode);
 879         if (r) {
 880                 DBG("fb_mode_to_dss_mode failed");
 881                 goto err;
 882         }
 883
 884         switch (var->nonstd) {
 885         case OMAPFB_COLOR_YUV422:
 886         case OMAPFB_COLOR_YUY422:
 887                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 888                         screen_width = fix->line_length
 889                                 / (var->bits_per_pixel >> 2);
 890                         break;
 891                 }
 892         default:
 893                 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 894                 break;
 895         }
 896
 897         ovl->get_overlay_info(ovl, &info);
 898
 899         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 900                 mirror = 0;
 901         else
 902                 mirror = ofbi->mirror;
 903
 904         info.paddr = data_start_p;
 905         info.screen_width = screen_width;
 906         info.width = xres;
 907         info.height = yres;
 908         info.color_mode = mode;
 909         info.rotation_type = ofbi->rotation_type;
 910         info.rotation = rotation;
 911         info.mirror = mirror;
 912
 913         info.pos_x = posx;
 914         info.pos_y = posy;
 915         info.out_width = outw;
 916         info.out_height = outh;
 917
 918         r = ovl->set_overlay_info(ovl, &info);
 919         if (r) {
 920                 DBG("ovl->setup_overlay_info failed\n");
 921                 goto err;
 922         }
 923
 924         return 0;
 925
 926 err:
 927         DBG("setup_overlay failed\n");
 928         return r;
 929 }
 930
 931 /* apply var to the overlay */
 932 int omapfb_apply_changes(struct fb_info *fbi, int init)
 933 {
 934         int r = 0;
 935         struct omapfb_info *ofbi = FB2OFB(fbi);
 936         struct fb_var_screeninfo *var = &fbi->var;
 937         struct omap_overlay *ovl;
 938         u16 posx, posy;
 939         u16 outw, outh;
 940         int i;
 941
 942 #ifdef DEBUG
 943         if (omapfb_test_pattern)
 944                 fill_fb(fbi);
 945 #endif
 946
 947         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 948
 949         for (i = 0; i < ofbi->num_overlays; i++) {
 950                 ovl = ofbi->overlays[i];
 951
 952                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 953
 954                 if (ofbi->region->size == 0) {
 955                         /* the fb is not available. disable the overlay */
 956                         omapfb_overlay_enable(ovl, 0);
 957                         if (!init && ovl->manager)
 958                                 ovl->manager->apply(ovl->manager);
 959                         continue;
 960                 }
 961
 962                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 963                         int rotation = (var->rotate + ofbi->rotation[i]) % 4;
 964                         if (rotation == FB_ROTATE_CW ||
 965                                         rotation == FB_ROTATE_CCW) {
 966                                 outw = var->yres;
 967                                 outh = var->xres;
 968                         } else {
 969                                 outw = var->xres;
 970                                 outh = var->yres;
 971                         }
 972                 } else {
 973                         struct omap_overlay_info info;
 974                         ovl->get_overlay_info(ovl, &info);
 975                         outw = info.out_width;
 976                         outh = info.out_height;
 977                 }
 978
 979                 if (init) {
 980                         posx = 0;
 981                         posy = 0;
 982                 } else {
 983                         struct omap_overlay_info info;
 984                         ovl->get_overlay_info(ovl, &info);
 985                         posx = info.pos_x;
 986                         posy = info.pos_y;
 987                 }
 988
 989                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
 990                 if (r)
 991                         goto err;
 992
 993                 if (!init && ovl->manager)
 994                         ovl->manager->apply(ovl->manager);
 995         }
 996         return 0;
 997 err:
 998         DBG("apply_changes failed\n");
 999         return r;
1000 }
1001
1002 /* checks var and eventually tweaks it to something supported,
1003  * DO NOT MODIFY PAR */
1004 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1005 {
1006         struct omapfb_info *ofbi = FB2OFB(fbi);
1007         int r;
1008
1009         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1010
1011         omapfb_get_mem_region(ofbi->region);
1012
1013         r = check_fb_var(fbi, var);
1014
1015         omapfb_put_mem_region(ofbi->region);
1016
1017         return r;
1018 }
1019
1020 /* set the video mode according to info->var */
1021 static int omapfb_set_par(struct fb_info *fbi)
1022 {
1023         struct omapfb_info *ofbi = FB2OFB(fbi);
1024         int r;
1025
1026         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1027
1028         omapfb_get_mem_region(ofbi->region);
1029
1030         set_fb_fix(fbi);
1031
1032         r = setup_vrfb_rotation(fbi);
1033         if (r)
1034                 goto out;
1035
1036         r = omapfb_apply_changes(fbi, 0);
1037
1038  out:
1039         omapfb_put_mem_region(ofbi->region);
1040
1041         return r;
1042 }
1043
1044 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1045                 struct fb_info *fbi)
1046 {
1047         struct omapfb_info *ofbi = FB2OFB(fbi);
1048         struct fb_var_screeninfo new_var;
1049         int r;
1050
1051         DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1052
1053         if (var->xoffset == fbi->var.xoffset &&
1054             var->yoffset == fbi->var.yoffset)
1055                 return 0;
1056
1057         new_var = fbi->var;
1058         new_var.xoffset = var->xoffset;
1059         new_var.yoffset = var->yoffset;
1060
1061         fbi->var = new_var;
1062
1063         omapfb_get_mem_region(ofbi->region);
1064
1065         r = omapfb_apply_changes(fbi, 0);
1066
1067         omapfb_put_mem_region(ofbi->region);
1068
1069         return r;
1070 }
1071
1072 static void mmap_user_open(struct vm_area_struct *vma)
1073 {
1074         struct omapfb2_mem_region *rg = vma->vm_private_data;
1075
1076         omapfb_get_mem_region(rg);
1077         atomic_inc(&rg->map_count);
1078         omapfb_put_mem_region(rg);
1079 }
1080
1081 static void mmap_user_close(struct vm_area_struct *vma)
1082 {
1083         struct omapfb2_mem_region *rg = vma->vm_private_data;
1084
1085         omapfb_get_mem_region(rg);
1086         atomic_dec(&rg->map_count);
1087         omapfb_put_mem_region(rg);
1088 }
1089
1090 static struct vm_operations_struct mmap_user_ops = {
1091         .open = mmap_user_open,
1092         .close = mmap_user_close,
1093 };
1094
1095 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1096 {
1097         struct omapfb_info *ofbi = FB2OFB(fbi);
1098         struct fb_fix_screeninfo *fix = &fbi->fix;
1099         struct omapfb2_mem_region *rg;
1100         unsigned long off;
1101         unsigned long start;
1102         u32 len;
1103         int r = -EINVAL;
1104
1105         if (vma->vm_end - vma->vm_start == 0)
1106                 return 0;
1107         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1108                 return -EINVAL;
1109         off = vma->vm_pgoff << PAGE_SHIFT;
1110
1111         rg = omapfb_get_mem_region(ofbi->region);
1112
1113         start = omapfb_get_region_paddr(ofbi);
1114         len = fix->smem_len;
1115         if (off >= len)
1116                 goto error;
1117         if ((vma->vm_end - vma->vm_start + off) > len)
1118                 goto error;
1119
1120         off += start;
1121
1122         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1123
1124         vma->vm_pgoff = off >> PAGE_SHIFT;
1125         vma->vm_flags |= VM_IO | VM_RESERVED;
1126         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1127         vma->vm_ops = &mmap_user_ops;
1128         vma->vm_private_data = rg;
1129         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1130                                vma->vm_end - vma->vm_start,
1131                                vma->vm_page_prot)) {
1132                 r = -EAGAIN;
1133                 goto error;
1134         }
1135
1136         /* vm_ops.open won't be called for mmap itself. */
1137         atomic_inc(&rg->map_count);
1138
1139         omapfb_put_mem_region(rg);
1140
1141         return 0;
1142
1143  error:
1144         omapfb_put_mem_region(ofbi->region);
1145
1146         return r;
1147 }
1148
1149 /* Store a single color palette entry into a pseudo palette or the hardware
1150  * palette if one is available. For now we support only 16bpp and thus store
1151  * the entry only to the pseudo palette.
1152  */
1153 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1154                 u_int blue, u_int transp, int update_hw_pal)
1155 {
1156         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1157         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1158         struct fb_var_screeninfo *var = &fbi->var;
1159         int r = 0;
1160
1161         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1162
1163         /*switch (plane->color_mode) {*/
1164         switch (mode) {
1165         case OMAPFB_COLOR_YUV422:
1166         case OMAPFB_COLOR_YUV420:
1167         case OMAPFB_COLOR_YUY422:
1168                 r = -EINVAL;
1169                 break;
1170         case OMAPFB_COLOR_CLUT_8BPP:
1171         case OMAPFB_COLOR_CLUT_4BPP:
1172         case OMAPFB_COLOR_CLUT_2BPP:
1173         case OMAPFB_COLOR_CLUT_1BPP:
1174                 /*
1175                    if (fbdev->ctrl->setcolreg)
1176                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1177                    transp, update_hw_pal);
1178                    */
1179                 /* Fallthrough */
1180                 r = -EINVAL;
1181                 break;
1182         case OMAPFB_COLOR_RGB565:
1183         case OMAPFB_COLOR_RGB444:
1184         case OMAPFB_COLOR_RGB24P:
1185         case OMAPFB_COLOR_RGB24U:
1186                 if (r != 0)
1187                         break;
1188
1189                 if (regno < 16) {
1190                         u16 pal;
1191                         pal = ((red >> (16 - var->red.length)) <<
1192                                         var->red.offset) |
1193                                 ((green >> (16 - var->green.length)) <<
1194                                  var->green.offset) |
1195                                 (blue >> (16 - var->blue.length));
1196                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1197                 }
1198                 break;
1199         default:
1200                 BUG();
1201         }
1202         return r;
1203 }
1204
1205 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1206                 u_int transp, struct fb_info *info)
1207 {
1208         DBG("setcolreg\n");
1209
1210         return _setcolreg(info, regno, red, green, blue, transp, 1);
1211 }
1212
1213 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1214 {
1215         int count, index, r;
1216         u16 *red, *green, *blue, *transp;
1217         u16 trans = 0xffff;
1218
1219         DBG("setcmap\n");
1220
1221         red     = cmap->red;
1222         green   = cmap->green;
1223         blue    = cmap->blue;
1224         transp  = cmap->transp;
1225         index   = cmap->start;
1226
1227         for (count = 0; count < cmap->len; count++) {
1228                 if (transp)
1229                         trans = *transp++;
1230                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1231                                 count == cmap->len - 1);
1232                 if (r != 0)
1233                         return r;
1234         }
1235
1236         return 0;
1237 }
1238
1239 static int omapfb_blank(int blank, struct fb_info *fbi)
1240 {
1241         struct omapfb_info *ofbi = FB2OFB(fbi);
1242         struct omapfb2_device *fbdev = ofbi->fbdev;
1243         struct omap_dss_device *display = fb2display(fbi);
1244         struct omapfb_display_data *d;
1245         int r = 0;
1246
1247         if (!display)
1248                 return -EINVAL;
1249
1250         omapfb_lock(fbdev);
1251
1252         d = get_display_data(fbdev, display);
1253
1254         switch (blank) {
1255         case FB_BLANK_UNBLANK:
1256                 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1257                         goto exit;
1258
1259                 if (display->driver->resume)
1260                         r = display->driver->resume(display);
1261
1262                 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1263                                 d->update_mode == OMAPFB_AUTO_UPDATE &&
1264                                 !d->auto_update_work_enabled)
1265                         omapfb_start_auto_update(fbdev, display);
1266
1267                 break;
1268
1269         case FB_BLANK_NORMAL:
1270                 /* FB_BLANK_NORMAL could be implemented.
1271                  * Needs DSS additions. */
1272         case FB_BLANK_VSYNC_SUSPEND:
1273         case FB_BLANK_HSYNC_SUSPEND:
1274         case FB_BLANK_POWERDOWN:
1275                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1276                         goto exit;
1277
1278                 if (d->auto_update_work_enabled)
1279                         omapfb_stop_auto_update(fbdev, display);
1280
1281                 if (display->driver->suspend)
1282                         r = display->driver->suspend(display);
1283
1284                 break;
1285
1286         default:
1287                 r = -EINVAL;
1288         }
1289
1290 exit:
1291         omapfb_unlock(fbdev);
1292
1293         return r;
1294 }
1295
1296 #if 0
1297 /* XXX fb_read and fb_write are needed for VRFB */
1298 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1299                 size_t count, loff_t *ppos)
1300 {
1301         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1302         /* XXX needed for VRFB */
1303         return count;
1304 }
1305 #endif
1306
1307 static struct fb_ops omapfb_ops = {
1308         .owner          = THIS_MODULE,
1309         .fb_open        = omapfb_open,
1310         .fb_release     = omapfb_release,
1311         .fb_fillrect    = cfb_fillrect,
1312         .fb_copyarea    = cfb_copyarea,
1313         .fb_imageblit   = cfb_imageblit,
1314         .fb_blank       = omapfb_blank,
1315         .fb_ioctl       = omapfb_ioctl,
1316         .fb_check_var   = omapfb_check_var,
1317         .fb_set_par     = omapfb_set_par,
1318         .fb_pan_display = omapfb_pan_display,
1319         .fb_mmap        = omapfb_mmap,
1320         .fb_setcolreg   = omapfb_setcolreg,
1321         .fb_setcmap     = omapfb_setcmap,
1322         /*.fb_write     = omapfb_write,*/
1323 };
1324
1325 static void omapfb_free_fbmem(struct fb_info *fbi)
1326 {
1327         struct omapfb_info *ofbi = FB2OFB(fbi);
1328         struct omapfb2_device *fbdev = ofbi->fbdev;
1329         struct omapfb2_mem_region *rg;
1330
1331         rg = ofbi->region;
1332
1333         WARN_ON(atomic_read(&rg->map_count));
1334
1335         if (rg->paddr)
1336                 if (omap_vram_free(rg->paddr, rg->size))
1337                         dev_err(fbdev->dev, "VRAM FREE failed\n");
1338
1339         if (rg->vaddr)
1340                 iounmap(rg->vaddr);
1341
1342         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1343                 /* unmap the 0 angle rotation */
1344                 if (rg->vrfb.vaddr[0]) {
1345                         iounmap(rg->vrfb.vaddr[0]);
1346                         omap_vrfb_release_ctx(&rg->vrfb);
1347                         rg->vrfb.vaddr[0] = NULL;
1348                 }
1349         }
1350
1351         rg->vaddr = NULL;
1352         rg->paddr = 0;
1353         rg->alloc = 0;
1354         rg->size = 0;
1355 }
1356
1357 static void clear_fb_info(struct fb_info *fbi)
1358 {
1359         memset(&fbi->var, 0, sizeof(fbi->var));
1360         memset(&fbi->fix, 0, sizeof(fbi->fix));
1361         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1362 }
1363
1364 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1365 {
1366         int i;
1367
1368         DBG("free all fbmem\n");
1369
1370         for (i = 0; i < fbdev->num_fbs; i++) {
1371                 struct fb_info *fbi = fbdev->fbs[i];
1372                 omapfb_free_fbmem(fbi);
1373                 clear_fb_info(fbi);
1374         }
1375
1376         return 0;
1377 }
1378
1379 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1380                 unsigned long paddr)
1381 {
1382         struct omapfb_info *ofbi = FB2OFB(fbi);
1383         struct omapfb2_device *fbdev = ofbi->fbdev;
1384         struct omapfb2_mem_region *rg;
1385         void __iomem *vaddr;
1386         int r;
1387
1388         rg = ofbi->region;
1389
1390         rg->paddr = 0;
1391         rg->vaddr = NULL;
1392         memset(&rg->vrfb, 0, sizeof rg->vrfb);
1393         rg->size = 0;
1394         rg->type = 0;
1395         rg->alloc = false;
1396         rg->map = false;
1397
1398         size = PAGE_ALIGN(size);
1399
1400         if (!paddr) {
1401                 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1402                 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1403         } else {
1404                 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1405                                 ofbi->id);
1406                 r = omap_vram_reserve(paddr, size);
1407         }
1408
1409         if (r) {
1410                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1411                 return -ENOMEM;
1412         }
1413
1414         if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1415                 vaddr = ioremap_wc(paddr, size);
1416
1417                 if (!vaddr) {
1418                         dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1419                         omap_vram_free(paddr, size);
1420                         return -ENOMEM;
1421                 }
1422
1423                 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1424         } else {
1425                 r = omap_vrfb_request_ctx(&rg->vrfb);
1426                 if (r) {
1427                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1428                         return r;
1429                 }
1430
1431                 vaddr = NULL;
1432         }
1433
1434         rg->paddr = paddr;
1435         rg->vaddr = vaddr;
1436         rg->size = size;
1437         rg->alloc = 1;
1438
1439         return 0;
1440 }
1441
1442 /* allocate fbmem using display resolution as reference */
1443 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1444                 unsigned long paddr)
1445 {
1446         struct omapfb_info *ofbi = FB2OFB(fbi);
1447         struct omapfb2_device *fbdev = ofbi->fbdev;
1448         struct omap_dss_device *display;
1449         int bytespp;
1450
1451         display =  fb2display(fbi);
1452
1453         if (!display)
1454                 return 0;
1455
1456         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1457         case 16:
1458                 bytespp = 2;
1459                 break;
1460         case 24:
1461                 bytespp = 4;
1462                 break;
1463         default:
1464                 bytespp = 4;
1465                 break;
1466         }
1467
1468         if (!size) {
1469                 u16 w, h;
1470
1471                 display->driver->get_resolution(display, &w, &h);
1472
1473                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1474                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1475                                         omap_vrfb_min_phys_size(h, w, bytespp));
1476
1477                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1478                                         w * h * bytespp, size);
1479                 } else {
1480                         size = w * h * bytespp;
1481                 }
1482         }
1483
1484         if (!size)
1485                 return 0;
1486
1487         return omapfb_alloc_fbmem(fbi, size, paddr);
1488 }
1489
1490 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1491 {
1492         enum omap_color_mode mode;
1493
1494         switch (fmt) {
1495         case OMAPFB_COLOR_RGB565:
1496                 mode = OMAP_DSS_COLOR_RGB16;
1497                 break;
1498         case OMAPFB_COLOR_YUV422:
1499                 mode = OMAP_DSS_COLOR_YUV2;
1500                 break;
1501         case OMAPFB_COLOR_CLUT_8BPP:
1502                 mode = OMAP_DSS_COLOR_CLUT8;
1503                 break;
1504         case OMAPFB_COLOR_CLUT_4BPP:
1505                 mode = OMAP_DSS_COLOR_CLUT4;
1506                 break;
1507         case OMAPFB_COLOR_CLUT_2BPP:
1508                 mode = OMAP_DSS_COLOR_CLUT2;
1509                 break;
1510         case OMAPFB_COLOR_CLUT_1BPP:
1511                 mode = OMAP_DSS_COLOR_CLUT1;
1512                 break;
1513         case OMAPFB_COLOR_RGB444:
1514                 mode = OMAP_DSS_COLOR_RGB12U;
1515                 break;
1516         case OMAPFB_COLOR_YUY422:
1517                 mode = OMAP_DSS_COLOR_UYVY;
1518                 break;
1519         case OMAPFB_COLOR_ARGB16:
1520                 mode = OMAP_DSS_COLOR_ARGB16;
1521                 break;
1522         case OMAPFB_COLOR_RGB24U:
1523                 mode = OMAP_DSS_COLOR_RGB24U;
1524                 break;
1525         case OMAPFB_COLOR_RGB24P:
1526                 mode = OMAP_DSS_COLOR_RGB24P;
1527                 break;
1528         case OMAPFB_COLOR_ARGB32:
1529                 mode = OMAP_DSS_COLOR_ARGB32;
1530                 break;
1531         case OMAPFB_COLOR_RGBA32:
1532                 mode = OMAP_DSS_COLOR_RGBA32;
1533                 break;
1534         case OMAPFB_COLOR_RGBX32:
1535                 mode = OMAP_DSS_COLOR_RGBX32;
1536                 break;
1537         default:
1538                 mode = -EINVAL;
1539         }
1540
1541         return mode;
1542 }
1543
1544 static int omapfb_parse_vram_param(const char *param, int max_entries,
1545                 unsigned long *sizes, unsigned long *paddrs)
1546 {
1547         int fbnum;
1548         unsigned long size;
1549         unsigned long paddr = 0;
1550         char *p, *start;
1551
1552         start = (char *)param;
1553
1554         while (1) {
1555                 p = start;
1556
1557                 fbnum = simple_strtoul(p, &p, 10);
1558
1559                 if (p == param)
1560                         return -EINVAL;
1561
1562                 if (*p != ':')
1563                         return -EINVAL;
1564
1565                 if (fbnum >= max_entries)
1566                         return -EINVAL;
1567
1568                 size = memparse(p + 1, &p);
1569
1570                 if (!size)
1571                         return -EINVAL;
1572
1573                 paddr = 0;
1574
1575                 if (*p == '@') {
1576                         paddr = simple_strtoul(p + 1, &p, 16);
1577
1578                         if (!paddr)
1579                                 return -EINVAL;
1580
1581                 }
1582
1583                 paddrs[fbnum] = paddr;
1584                 sizes[fbnum] = size;
1585
1586                 if (*p == 0)
1587                         break;
1588
1589                 if (*p != ',')
1590                         return -EINVAL;
1591
1592                 ++p;
1593
1594                 start = p;
1595         }
1596
1597         return 0;
1598 }
1599
1600 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1601 {
1602         int i, r;
1603         unsigned long vram_sizes[10];
1604         unsigned long vram_paddrs[10];
1605
1606         memset(&vram_sizes, 0, sizeof(vram_sizes));
1607         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1608
1609         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1610                                 vram_sizes, vram_paddrs)) {
1611                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1612
1613                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1614                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1615         }
1616
1617         if (fbdev->dev->platform_data) {
1618                 struct omapfb_platform_data *opd;
1619                 opd = fbdev->dev->platform_data;
1620                 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1621                         if (!vram_sizes[i]) {
1622                                 unsigned long size;
1623                                 unsigned long paddr;
1624
1625                                 size = opd->mem_desc.region[i].size;
1626                                 paddr = opd->mem_desc.region[i].paddr;
1627
1628                                 vram_sizes[i] = size;
1629                                 vram_paddrs[i] = paddr;
1630                         }
1631                 }
1632         }
1633
1634         for (i = 0; i < fbdev->num_fbs; i++) {
1635                 /* allocate memory automatically only for fb0, or if
1636                  * excplicitly defined with vram or plat data option */
1637                 if (i == 0 || vram_sizes[i] != 0) {
1638                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1639                                         vram_sizes[i], vram_paddrs[i]);
1640
1641                         if (r)
1642                                 return r;
1643                 }
1644         }
1645
1646         for (i = 0; i < fbdev->num_fbs; i++) {
1647                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1648                 struct omapfb2_mem_region *rg;
1649                 rg = ofbi->region;
1650
1651                 DBG("region%d phys %08x virt %p size=%lu\n",
1652                                 i,
1653                                 rg->paddr,
1654                                 rg->vaddr,
1655                                 rg->size);
1656         }
1657
1658         return 0;
1659 }
1660
1661 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1662 {
1663         struct omapfb_info *ofbi = FB2OFB(fbi);
1664         struct omapfb2_device *fbdev = ofbi->fbdev;
1665         struct omap_dss_device *display = fb2display(fbi);
1666         struct omapfb2_mem_region *rg = ofbi->region;
1667         unsigned long old_size = rg->size;
1668         unsigned long old_paddr = rg->paddr;
1669         int old_type = rg->type;
1670         int r;
1671
1672         if (type > OMAPFB_MEMTYPE_MAX)
1673                 return -EINVAL;
1674
1675         size = PAGE_ALIGN(size);
1676
1677         if (old_size == size && old_type == type)
1678                 return 0;
1679
1680         if (display && display->driver->sync)
1681                         display->driver->sync(display);
1682
1683         omapfb_free_fbmem(fbi);
1684
1685         if (size == 0) {
1686                 clear_fb_info(fbi);
1687                 return 0;
1688         }
1689
1690         r = omapfb_alloc_fbmem(fbi, size, 0);
1691
1692         if (r) {
1693                 if (old_size)
1694                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1695
1696                 if (rg->size == 0)
1697                         clear_fb_info(fbi);
1698
1699                 return r;
1700         }
1701
1702         if (old_size == size)
1703                 return 0;
1704
1705         if (old_size == 0) {
1706                 DBG("initializing fb %d\n", ofbi->id);
1707                 r = omapfb_fb_init(fbdev, fbi);
1708                 if (r) {
1709                         DBG("omapfb_fb_init failed\n");
1710                         goto err;
1711                 }
1712                 r = omapfb_apply_changes(fbi, 1);
1713                 if (r) {
1714                         DBG("omapfb_apply_changes failed\n");
1715                         goto err;
1716                 }
1717         } else {
1718                 struct fb_var_screeninfo new_var;
1719                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1720                 r = check_fb_var(fbi, &new_var);
1721                 if (r)
1722                         goto err;
1723                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1724                 set_fb_fix(fbi);
1725                 r = setup_vrfb_rotation(fbi);
1726                 if (r)
1727                         goto err;
1728         }
1729
1730         return 0;
1731 err:
1732         omapfb_free_fbmem(fbi);
1733         clear_fb_info(fbi);
1734         return r;
1735 }
1736
1737 static void omapfb_auto_update_work(struct work_struct *work)
1738 {
1739         struct omap_dss_device *dssdev;
1740         struct omap_dss_driver *dssdrv;
1741         struct omapfb_display_data *d;
1742         u16 w, h;
1743         unsigned int freq;
1744         struct omapfb2_device *fbdev;
1745
1746         d = container_of(work, struct omapfb_display_data,
1747                         auto_update_work.work);
1748
1749         dssdev = d->dssdev;
1750         dssdrv = dssdev->driver;
1751         fbdev = d->fbdev;
1752
1753         if (!dssdrv || !dssdrv->update)
1754                 return;
1755
1756         if (dssdrv->sync)
1757                 dssdrv->sync(dssdev);
1758
1759         dssdrv->get_resolution(dssdev, &w, &h);
1760         dssdrv->update(dssdev, 0, 0, w, h);
1761
1762         freq = auto_update_freq;
1763         if (freq == 0)
1764                 freq = 20;
1765         queue_delayed_work(fbdev->auto_update_wq,
1766                         &d->auto_update_work, HZ / freq);
1767 }
1768
1769 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1770                 struct omap_dss_device *display)
1771 {
1772         struct omapfb_display_data *d;
1773
1774         if (fbdev->auto_update_wq == NULL) {
1775                 struct workqueue_struct *wq;
1776
1777                 wq = create_singlethread_workqueue("omapfb_auto_update");
1778
1779                 if (wq == NULL) {
1780                         dev_err(fbdev->dev, "Failed to create workqueue for "
1781                                         "auto-update\n");
1782                         return;
1783                 }
1784
1785                 fbdev->auto_update_wq = wq;
1786         }
1787
1788         d = get_display_data(fbdev, display);
1789
1790         INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1791
1792         d->auto_update_work_enabled = true;
1793
1794         omapfb_auto_update_work(&d->auto_update_work.work);
1795 }
1796
1797 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1798                 struct omap_dss_device *display)
1799 {
1800         struct omapfb_display_data *d;
1801
1802         d = get_display_data(fbdev, display);
1803
1804         cancel_delayed_work_sync(&d->auto_update_work);
1805
1806         d->auto_update_work_enabled = false;
1807 }
1808
1809 /* initialize fb_info, var, fix to something sane based on the display */
1810 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1811 {
1812         struct fb_var_screeninfo *var = &fbi->var;
1813         struct omap_dss_device *display = fb2display(fbi);
1814         struct omapfb_info *ofbi = FB2OFB(fbi);
1815         int r = 0;
1816
1817         fbi->fbops = &omapfb_ops;
1818         fbi->flags = FBINFO_FLAG_DEFAULT;
1819         fbi->pseudo_palette = fbdev->pseudo_palette;
1820
1821         if (ofbi->region->size == 0) {
1822                 clear_fb_info(fbi);
1823                 return 0;
1824         }
1825
1826         var->nonstd = 0;
1827         var->bits_per_pixel = 0;
1828
1829         var->rotate = def_rotate;
1830
1831         /*
1832          * Check if there is a default color format set in the board file,
1833          * and use this format instead the default deducted from the
1834          * display bpp.
1835          */
1836         if (fbdev->dev->platform_data) {
1837                 struct omapfb_platform_data *opd;
1838                 int id = ofbi->id;
1839
1840                 opd = fbdev->dev->platform_data;
1841                 if (opd->mem_desc.region[id].format_used) {
1842                         enum omap_color_mode mode;
1843                         enum omapfb_color_format format;
1844
1845                         format = opd->mem_desc.region[id].format;
1846                         mode = fb_format_to_dss_mode(format);
1847                         if (mode < 0) {
1848                                 r = mode;
1849                                 goto err;
1850                         }
1851                         r = dss_mode_to_fb_mode(mode, var);
1852                         if (r < 0)
1853                                 goto err;
1854                 }
1855         }
1856
1857         if (display) {
1858                 u16 w, h;
1859                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1860
1861                 display->driver->get_resolution(display, &w, &h);
1862
1863                 if (rotation == FB_ROTATE_CW ||
1864                                 rotation == FB_ROTATE_CCW) {
1865                         var->xres = h;
1866                         var->yres = w;
1867                 } else {
1868                         var->xres = w;
1869                         var->yres = h;
1870                 }
1871
1872                 var->xres_virtual = var->xres;
1873                 var->yres_virtual = var->yres;
1874
1875                 if (!var->bits_per_pixel) {
1876                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1877                         case 16:
1878                                 var->bits_per_pixel = 16;
1879                                 break;
1880                         case 24:
1881                                 var->bits_per_pixel = 32;
1882                                 break;
1883                         default:
1884                                 dev_err(fbdev->dev, "illegal display "
1885                                                 "bpp\n");
1886                                 return -EINVAL;
1887                         }
1888                 }
1889         } else {
1890                 /* if there's no display, let's just guess some basic values */
1891                 var->xres = 320;
1892                 var->yres = 240;
1893                 var->xres_virtual = var->xres;
1894                 var->yres_virtual = var->yres;
1895                 if (!var->bits_per_pixel)
1896                         var->bits_per_pixel = 16;
1897         }
1898
1899         r = check_fb_var(fbi, var);
1900         if (r)
1901                 goto err;
1902
1903         set_fb_fix(fbi);
1904         r = setup_vrfb_rotation(fbi);
1905         if (r)
1906                 goto err;
1907
1908         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1909         if (r)
1910                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1911
1912 err:
1913         return r;
1914 }
1915
1916 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1917 {
1918         fb_dealloc_cmap(&fbi->cmap);
1919 }
1920
1921
1922 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1923 {
1924         int i;
1925
1926         DBG("free_resources\n");
1927
1928         if (fbdev == NULL)
1929                 return;
1930
1931         for (i = 0; i < fbdev->num_fbs; i++)
1932                 unregister_framebuffer(fbdev->fbs[i]);
1933
1934         /* free the reserved fbmem */
1935         omapfb_free_all_fbmem(fbdev);
1936
1937         for (i = 0; i < fbdev->num_fbs; i++) {
1938                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1939                 framebuffer_release(fbdev->fbs[i]);
1940         }
1941
1942         for (i = 0; i < fbdev->num_displays; i++) {
1943                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1944
1945                 if (fbdev->displays[i].auto_update_work_enabled)
1946                         omapfb_stop_auto_update(fbdev, dssdev);
1947
1948                 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1949                         dssdev->driver->disable(dssdev);
1950
1951                 omap_dss_put_device(dssdev);
1952         }
1953
1954         if (fbdev->auto_update_wq != NULL) {
1955                 flush_workqueue(fbdev->auto_update_wq);
1956                 destroy_workqueue(fbdev->auto_update_wq);
1957                 fbdev->auto_update_wq = NULL;
1958         }
1959
1960         dev_set_drvdata(fbdev->dev, NULL);
1961         kfree(fbdev);
1962 }
1963
1964 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1965 {
1966         int r, i;
1967
1968         fbdev->num_fbs = 0;
1969
1970         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1971
1972         /* allocate fb_infos */
1973         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1974                 struct fb_info *fbi;
1975                 struct omapfb_info *ofbi;
1976
1977                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1978                                 fbdev->dev);
1979
1980                 if (fbi == NULL) {
1981                         dev_err(fbdev->dev,
1982                                 "unable to allocate memory for plane info\n");
1983                         return -ENOMEM;
1984                 }
1985
1986                 clear_fb_info(fbi);
1987
1988                 fbdev->fbs[i] = fbi;
1989
1990                 ofbi = FB2OFB(fbi);
1991                 ofbi->fbdev = fbdev;
1992                 ofbi->id = i;
1993
1994                 ofbi->region = &fbdev->regions[i];
1995                 ofbi->region->id = i;
1996                 init_rwsem(&ofbi->region->lock);
1997
1998                 /* assign these early, so that fb alloc can use them */
1999                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
2000                         OMAP_DSS_ROT_DMA;
2001                 ofbi->mirror = def_mirror;
2002
2003                 fbdev->num_fbs++;
2004         }
2005
2006         DBG("fb_infos allocated\n");
2007
2008         /* assign overlays for the fbs */
2009         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
2010                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
2011
2012                 ofbi->overlays[0] = fbdev->overlays[i];
2013                 ofbi->num_overlays = 1;
2014         }
2015
2016         /* allocate fb memories */
2017         r = omapfb_allocate_all_fbs(fbdev);
2018         if (r) {
2019                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
2020                 return r;
2021         }
2022
2023         DBG("fbmems allocated\n");
2024
2025         /* setup fb_infos */
2026         for (i = 0; i < fbdev->num_fbs; i++) {
2027                 struct fb_info *fbi = fbdev->fbs[i];
2028                 struct omapfb_info *ofbi = FB2OFB(fbi);
2029
2030                 omapfb_get_mem_region(ofbi->region);
2031                 r = omapfb_fb_init(fbdev, fbi);
2032                 omapfb_put_mem_region(ofbi->region);
2033
2034                 if (r) {
2035                         dev_err(fbdev->dev, "failed to setup fb_info\n");
2036                         return r;
2037                 }
2038         }
2039
2040         DBG("fb_infos initialized\n");
2041
2042         for (i = 0; i < fbdev->num_fbs; i++) {
2043                 r = register_framebuffer(fbdev->fbs[i]);
2044                 if (r != 0) {
2045                         dev_err(fbdev->dev,
2046                                 "registering framebuffer %d failed\n", i);
2047                         return r;
2048                 }
2049         }
2050
2051         DBG("framebuffers registered\n");
2052
2053         for (i = 0; i < fbdev->num_fbs; i++) {
2054                 struct fb_info *fbi = fbdev->fbs[i];
2055                 struct omapfb_info *ofbi = FB2OFB(fbi);
2056
2057                 omapfb_get_mem_region(ofbi->region);
2058                 r = omapfb_apply_changes(fbi, 1);
2059                 omapfb_put_mem_region(ofbi->region);
2060
2061                 if (r) {
2062                         dev_err(fbdev->dev, "failed to change mode\n");
2063                         return r;
2064                 }
2065         }
2066
2067         /* Enable fb0 */
2068         if (fbdev->num_fbs > 0) {
2069                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
2070
2071                 if (ofbi->num_overlays > 0) {
2072                         struct omap_overlay *ovl = ofbi->overlays[0];
2073
2074                         ovl->manager->apply(ovl->manager);
2075
2076                         r = omapfb_overlay_enable(ovl, 1);
2077
2078                         if (r) {
2079                                 dev_err(fbdev->dev,
2080                                                 "failed to enable overlay\n");
2081                                 return r;
2082                         }
2083                 }
2084         }
2085
2086         DBG("create_framebuffers done\n");
2087
2088         return 0;
2089 }
2090
2091 static int omapfb_mode_to_timings(const char *mode_str,
2092                 struct omap_video_timings *timings, u8 *bpp)
2093 {
2094         struct fb_info *fbi;
2095         struct fb_var_screeninfo *var;
2096         struct fb_ops *fbops;
2097         int r;
2098
2099 #ifdef CONFIG_OMAP2_DSS_VENC
2100         if (strcmp(mode_str, "pal") == 0) {
2101                 *timings = omap_dss_pal_timings;
2102                 *bpp = 24;
2103                 return 0;
2104         } else if (strcmp(mode_str, "ntsc") == 0) {
2105                 *timings = omap_dss_ntsc_timings;
2106                 *bpp = 24;
2107                 return 0;
2108         }
2109 #endif
2110
2111         /* this is quite a hack, but I wanted to use the modedb and for
2112          * that we need fb_info and var, so we create dummy ones */
2113
2114         *bpp = 0;
2115         fbi = NULL;
2116         var = NULL;
2117         fbops = NULL;
2118
2119         fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2120         if (fbi == NULL) {
2121                 r = -ENOMEM;
2122                 goto err;
2123         }
2124
2125         var = kzalloc(sizeof(*var), GFP_KERNEL);
2126         if (var == NULL) {
2127                 r = -ENOMEM;
2128                 goto err;
2129         }
2130
2131         fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2132         if (fbops == NULL) {
2133                 r = -ENOMEM;
2134                 goto err;
2135         }
2136
2137         fbi->fbops = fbops;
2138
2139         r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2140         if (r == 0) {
2141                 r = -EINVAL;
2142                 goto err;
2143         }
2144
2145         timings->pixel_clock = PICOS2KHZ(var->pixclock);
2146         timings->hbp = var->left_margin;
2147         timings->hfp = var->right_margin;
2148         timings->vbp = var->upper_margin;
2149         timings->vfp = var->lower_margin;
2150         timings->hsw = var->hsync_len;
2151         timings->vsw = var->vsync_len;
2152         timings->x_res = var->xres;
2153         timings->y_res = var->yres;
2154
2155         switch (var->bits_per_pixel) {
2156         case 16:
2157                 *bpp = 16;
2158                 break;
2159         case 24:
2160         case 32:
2161         default:
2162                 *bpp = 24;
2163                 break;
2164         }
2165
2166         r = 0;
2167
2168 err:
2169         kfree(fbi);
2170         kfree(var);
2171         kfree(fbops);
2172
2173         return r;
2174 }
2175
2176 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2177                 struct omap_dss_device *display, char *mode_str)
2178 {
2179         int r;
2180         u8 bpp;
2181         struct omap_video_timings timings, temp_timings;
2182         struct omapfb_display_data *d;
2183
2184         r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2185         if (r)
2186                 return r;
2187
2188         d = get_display_data(fbdev, display);
2189         d->bpp_override = bpp;
2190
2191         if (display->driver->check_timings) {
2192                 r = display->driver->check_timings(display, &timings);
2193                 if (r)
2194                         return r;
2195         } else {
2196                 /* If check_timings is not present compare xres and yres */
2197                 if (display->driver->get_timings) {
2198                         display->driver->get_timings(display, &temp_timings);
2199
2200                         if (temp_timings.x_res != timings.x_res ||
2201                                 temp_timings.y_res != timings.y_res)
2202                                 return -EINVAL;
2203                 }
2204         }
2205
2206         if (display->driver->set_timings)
2207                         display->driver->set_timings(display, &timings);
2208
2209         return 0;
2210 }
2211
2212 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2213                 struct omap_dss_device *dssdev)
2214 {
2215         struct omapfb_display_data *d;
2216
2217         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2218
2219         d = get_display_data(fbdev, dssdev);
2220
2221         if (d->bpp_override != 0)
2222                 return d->bpp_override;
2223
2224         return dssdev->driver->get_recommended_bpp(dssdev);
2225 }
2226
2227 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2228 {
2229         char *str, *options, *this_opt;
2230         int r = 0;
2231
2232         str = kstrdup(def_mode, GFP_KERNEL);
2233         if (!str)
2234                 return -ENOMEM;
2235         options = str;
2236
2237         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2238                 char *p, *display_str, *mode_str;
2239                 struct omap_dss_device *display;
2240                 int i;
2241
2242                 p = strchr(this_opt, ':');
2243                 if (!p) {
2244                         r = -EINVAL;
2245                         break;
2246                 }
2247
2248                 *p = 0;
2249                 display_str = this_opt;
2250                 mode_str = p + 1;
2251
2252                 display = NULL;
2253                 for (i = 0; i < fbdev->num_displays; ++i) {
2254                         if (strcmp(fbdev->displays[i].dssdev->name,
2255                                                 display_str) == 0) {
2256                                 display = fbdev->displays[i].dssdev;
2257                                 break;
2258                         }
2259                 }
2260
2261                 if (!display) {
2262                         r = -EINVAL;
2263                         break;
2264                 }
2265
2266                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2267                 if (r)
2268                         break;
2269         }
2270
2271         kfree(str);
2272
2273         return r;
2274 }
2275
2276 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2277                 struct omap_video_timings *t)
2278 {
2279         t->x_res = m->xres;
2280         t->y_res = m->yres;
2281         t->pixel_clock = PICOS2KHZ(m->pixclock);
2282         t->hsw = m->hsync_len;
2283         t->hfp = m->right_margin;
2284         t->hbp = m->left_margin;
2285         t->vsw = m->vsync_len;
2286         t->vfp = m->lower_margin;
2287         t->vbp = m->upper_margin;
2288 }
2289
2290 static int omapfb_find_best_mode(struct omap_dss_device *display,
2291                 struct omap_video_timings *timings)
2292 {
2293         struct fb_monspecs *specs;
2294         u8 *edid;
2295         int r, i, best_xres, best_idx, len;
2296
2297         if (!display->driver->read_edid)
2298                 return -ENODEV;
2299
2300         len = 0x80 * 2;
2301         edid = kmalloc(len, GFP_KERNEL);
2302
2303         r = display->driver->read_edid(display, edid, len);
2304         if (r < 0)
2305                 goto err1;
2306
2307         specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2308
2309         fb_edid_to_monspecs(edid, specs);
2310
2311         if (edid[126] > 0)
2312                 fb_edid_add_monspecs(edid + 0x80, specs);
2313
2314         best_xres = 0;
2315         best_idx = -1;
2316
2317         for (i = 0; i < specs->modedb_len; ++i) {
2318                 struct fb_videomode *m;
2319                 struct omap_video_timings t;
2320
2321                 m = &specs->modedb[i];
2322
2323                 if (m->pixclock == 0)
2324                         continue;
2325
2326                 /* skip repeated pixel modes */
2327                 if (m->xres == 2880 || m->xres == 1440)
2328                         continue;
2329
2330                 fb_videomode_to_omap_timings(m, &t);
2331
2332                 r = display->driver->check_timings(display, &t);
2333                 if (r == 0 && best_xres < m->xres) {
2334                         best_xres = m->xres;
2335                         best_idx = i;
2336                 }
2337         }
2338
2339         if (best_xres == 0) {
2340                 r = -ENOENT;
2341                 goto err2;
2342         }
2343
2344         fb_videomode_to_omap_timings(&specs->modedb[best_idx], timings);
2345
2346         r = 0;
2347
2348 err2:
2349         fb_destroy_modedb(specs->modedb);
2350         kfree(specs);
2351 err1:
2352         kfree(edid);
2353
2354         return r;
2355 }
2356
2357 static int omapfb_init_display(struct omapfb2_device *fbdev,
2358                 struct omap_dss_device *dssdev)
2359 {
2360         struct omap_dss_driver *dssdrv = dssdev->driver;
2361         struct omapfb_display_data *d;
2362         int r;
2363
2364         r = dssdrv->enable(dssdev);
2365         if (r) {
2366                 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2367                                 dssdev->name);
2368                 return r;
2369         }
2370
2371         d = get_display_data(fbdev, dssdev);
2372
2373         d->fbdev = fbdev;
2374
2375         if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2376                 u16 w, h;
2377
2378                 if (auto_update) {
2379                         omapfb_start_auto_update(fbdev, dssdev);
2380                         d->update_mode = OMAPFB_AUTO_UPDATE;
2381                 } else {
2382                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2383                 }
2384
2385                 if (dssdrv->enable_te) {
2386                         r = dssdrv->enable_te(dssdev, 1);
2387                         if (r) {
2388                                 dev_err(fbdev->dev, "Failed to set TE\n");
2389                                 return r;
2390                         }
2391                 }
2392
2393                 dssdrv->get_resolution(dssdev, &w, &h);
2394                 r = dssdrv->update(dssdev, 0, 0, w, h);
2395                 if (r) {
2396                         dev_err(fbdev->dev,
2397                                         "Failed to update display\n");
2398                         return r;
2399                 }
2400         } else {
2401                 d->update_mode = OMAPFB_AUTO_UPDATE;
2402         }
2403
2404         return 0;
2405 }
2406
2407 static int omapfb_probe(struct platform_device *pdev)
2408 {
2409         struct omapfb2_device *fbdev = NULL;
2410         int r = 0;
2411         int i;
2412         struct omap_overlay *ovl;
2413         struct omap_dss_device *def_display;
2414         struct omap_dss_device *dssdev;
2415
2416         DBG("omapfb_probe\n");
2417
2418         if (pdev->num_resources != 0) {
2419                 dev_err(&pdev->dev, "probed for an unknown device\n");
2420                 r = -ENODEV;
2421                 goto err0;
2422         }
2423
2424         fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2425         if (fbdev == NULL) {
2426                 r = -ENOMEM;
2427                 goto err0;
2428         }
2429
2430         /* TODO : Replace cpu check with omap_has_vrfb once HAS_FEATURE
2431         *        available for OMAP2 and OMAP3
2432         */
2433         if (def_vrfb && !cpu_is_omap24xx() && !cpu_is_omap34xx()) {
2434                 def_vrfb = 0;
2435                 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2436                                 "ignoring the module parameter vrfb=y\n");
2437         }
2438
2439
2440         mutex_init(&fbdev->mtx);
2441
2442         fbdev->dev = &pdev->dev;
2443         platform_set_drvdata(pdev, fbdev);
2444
2445         r = 0;
2446         fbdev->num_displays = 0;
2447         dssdev = NULL;
2448         for_each_dss_dev(dssdev) {
2449                 struct omapfb_display_data *d;
2450
2451                 omap_dss_get_device(dssdev);
2452
2453                 if (!dssdev->driver) {
2454                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2455                                 dssdev->name);
2456                         omap_dss_put_device(dssdev);
2457                         continue;
2458                 }
2459
2460                 d = &fbdev->displays[fbdev->num_displays++];
2461                 d->dssdev = dssdev;
2462                 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2463                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2464                 else
2465                         d->update_mode = OMAPFB_AUTO_UPDATE;
2466         }
2467
2468         if (r)
2469                 goto cleanup;
2470
2471         if (fbdev->num_displays == 0) {
2472                 dev_err(&pdev->dev, "no displays\n");
2473                 r = -EINVAL;
2474                 goto cleanup;
2475         }
2476
2477         fbdev->num_overlays = omap_dss_get_num_overlays();
2478         for (i = 0; i < fbdev->num_overlays; i++)
2479                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2480
2481         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2482         for (i = 0; i < fbdev->num_managers; i++)
2483                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2484
2485         /* gfx overlay should be the default one. find a display
2486          * connected to that, and use it as default display */
2487         ovl = omap_dss_get_overlay(0);
2488         if (ovl->manager && ovl->manager->device) {
2489                 def_display = ovl->manager->device;
2490         } else {
2491                 dev_warn(&pdev->dev, "cannot find default display\n");
2492                 def_display = NULL;
2493         }
2494
2495         if (def_mode && strlen(def_mode) > 0) {
2496                 if (omapfb_parse_def_modes(fbdev))
2497                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2498         } else if (def_display && def_display->driver->set_timings &&
2499                         def_display->driver->check_timings) {
2500                 struct omap_video_timings t;
2501
2502                 r = omapfb_find_best_mode(def_display, &t);
2503
2504                 if (r == 0)
2505                         def_display->driver->set_timings(def_display, &t);
2506         }
2507
2508         r = omapfb_create_framebuffers(fbdev);
2509         if (r)
2510                 goto cleanup;
2511
2512         for (i = 0; i < fbdev->num_managers; i++) {
2513                 struct omap_overlay_manager *mgr;
2514                 mgr = fbdev->managers[i];
2515                 r = mgr->apply(mgr);
2516                 if (r)
2517                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2518         }
2519
2520         DBG("mgr->apply'ed\n");
2521
2522         if (def_display) {
2523                 r = omapfb_init_display(fbdev, def_display);
2524                 if (r) {
2525                         dev_err(fbdev->dev,
2526                                         "failed to initialize default "
2527                                         "display\n");
2528                         goto cleanup;
2529                 }
2530         }
2531
2532         DBG("create sysfs for fbs\n");
2533         r = omapfb_create_sysfs(fbdev);
2534         if (r) {
2535                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2536                 goto cleanup;
2537         }
2538
2539         return 0;
2540
2541 cleanup:
2542         omapfb_free_resources(fbdev);
2543 err0:
2544         dev_err(&pdev->dev, "failed to setup omapfb\n");
2545         return r;
2546 }
2547
2548 static int omapfb_remove(struct platform_device *pdev)
2549 {
2550         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2551
2552         /* FIXME: wait till completion of pending events */
2553
2554         omapfb_remove_sysfs(fbdev);
2555
2556         omapfb_free_resources(fbdev);
2557
2558         return 0;
2559 }
2560
2561 static struct platform_driver omapfb_driver = {
2562         .probe          = omapfb_probe,
2563         .remove         = omapfb_remove,
2564         .driver         = {
2565                 .name   = "omapfb",
2566                 .owner  = THIS_MODULE,
2567         },
2568 };
2569
2570 static int __init omapfb_init(void)
2571 {
2572         DBG("omapfb_init\n");
2573
2574         if (platform_driver_register(&omapfb_driver)) {
2575                 printk(KERN_ERR "failed to register omapfb driver\n");
2576                 return -ENODEV;
2577         }
2578
2579         return 0;
2580 }
2581
2582 static void __exit omapfb_exit(void)
2583 {
2584         DBG("omapfb_exit\n");
2585         platform_driver_unregister(&omapfb_driver);
2586 }
2587
2588 module_param_named(mode, def_mode, charp, 0);
2589 module_param_named(vram, def_vram, charp, 0);
2590 module_param_named(rotate, def_rotate, int, 0);
2591 module_param_named(vrfb, def_vrfb, bool, 0);
2592 module_param_named(mirror, def_mirror, bool, 0);
2593
2594 /* late_initcall to let panel/ctrl drivers loaded first.
2595  * I guess better option would be a more dynamic approach,
2596  * so that omapfb reacts to new panels when they are loaded */
2597 late_initcall(omapfb_init);
2598 /*module_init(omapfb_init);*/
2599 module_exit(omapfb_exit);
2600
2601 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2602 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2603 MODULE_LICENSE("GPL v2");