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