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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/drivers/video/omap2/omapfb-main.c
   4  *
   5  * Copyright (C) 2008 Nokia Corporation
   6  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   7  *
   8  * Some code and ideas taken from drivers/video/omap/ driver
   9  * by Imre Deak.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/delay.h>
  14 #include <linux/slab.h>
  15 #include <linux/fb.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/vmalloc.h>
  18 #include <linux/device.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/omapfb.h>
  21
  22 #include <video/omapfb_dss.h>
  23 #include <video/omapvrfb.h>
  24
  25 #include "omapfb.h"
  26
  27 #define MODULE_NAME     "omapfb"
  28
  29 #define OMAPFB_PLANE_XRES_MIN           8
  30 #define OMAPFB_PLANE_YRES_MIN           8
  31
  32 static char *def_mode;
  33 static char *def_vram;
  34 static bool def_vrfb;
  35 static int def_rotate;
  36 static bool def_mirror;
  37 static bool auto_update;
  38 static unsigned int auto_update_freq;
  39 module_param(auto_update, bool, 0);
  40 module_param(auto_update_freq, uint, 0644);
  41
  42 #ifdef DEBUG
  43 bool omapfb_debug;
  44 module_param_named(debug, omapfb_debug, bool, 0644);
  45 static bool omapfb_test_pattern;
  46 module_param_named(test, omapfb_test_pattern, bool, 0644);
  47 #endif
  48
  49 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
  50 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
  51                 struct omap_dss_device *dssdev);
  52
  53 #ifdef DEBUG
  54 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  55 {
  56         struct fb_var_screeninfo *var = &fbi->var;
  57         struct fb_fix_screeninfo *fix = &fbi->fix;
  58         void __iomem *addr = fbi->screen_base;
  59         const unsigned bytespp = var->bits_per_pixel >> 3;
  60         const unsigned line_len = fix->line_length / bytespp;
  61
  62         int r = (color >> 16) & 0xff;
  63         int g = (color >> 8) & 0xff;
  64         int b = (color >> 0) & 0xff;
  65
  66         if (var->bits_per_pixel == 16) {
  67                 u16 __iomem *p = (u16 __iomem *)addr;
  68                 p += y * line_len + x;
  69
  70                 r = r * 32 / 256;
  71                 g = g * 64 / 256;
  72                 b = b * 32 / 256;
  73
  74                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  75         } else if (var->bits_per_pixel == 24) {
  76                 u8 __iomem *p = (u8 __iomem *)addr;
  77                 p += (y * line_len + x) * 3;
  78
  79                 __raw_writeb(b, p + 0);
  80                 __raw_writeb(g, p + 1);
  81                 __raw_writeb(r, p + 2);
  82         } else if (var->bits_per_pixel == 32) {
  83                 u32 __iomem *p = (u32 __iomem *)addr;
  84                 p += y * line_len + x;
  85                 __raw_writel(color, p);
  86         }
  87 }
  88
  89 static void fill_fb(struct fb_info *fbi)
  90 {
  91         struct fb_var_screeninfo *var = &fbi->var;
  92         const short w = var->xres_virtual;
  93         const short h = var->yres_virtual;
  94         void __iomem *addr = fbi->screen_base;
  95         int y, x;
  96
  97         if (!addr)
  98                 return;
  99
 100         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 101
 102         for (y = 0; y < h; y++) {
 103                 for (x = 0; x < w; x++) {
 104                         if (x < 20 && y < 20)
 105                                 draw_pixel(fbi, x, y, 0xffffff);
 106                         else if (x < 20 && (y > 20 && y < h - 20))
 107                                 draw_pixel(fbi, x, y, 0xff);
 108                         else if (y < 20 && (x > 20 && x < w - 20))
 109                                 draw_pixel(fbi, x, y, 0xff00);
 110                         else if (x > w - 20 && (y > 20 && y < h - 20))
 111                                 draw_pixel(fbi, x, y, 0xff0000);
 112                         else if (y > h - 20 && (x > 20 && x < w - 20))
 113                                 draw_pixel(fbi, x, y, 0xffff00);
 114                         else if (x == 20 || x == w - 20 ||
 115                                         y == 20 || y == h - 20)
 116                                 draw_pixel(fbi, x, y, 0xffffff);
 117                         else if (x == y || w - x == h - y)
 118                                 draw_pixel(fbi, x, y, 0xff00ff);
 119                         else if (w - x == y || x == h - y)
 120                                 draw_pixel(fbi, x, y, 0x00ffff);
 121                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 122                                 int t = x * 3 / w;
 123                                 unsigned r = 0, g = 0, b = 0;
 124                                 unsigned c;
 125                                 if (var->bits_per_pixel == 16) {
 126                                         if (t == 0)
 127                                                 b = (y % 32) * 256 / 32;
 128                                         else if (t == 1)
 129                                                 g = (y % 64) * 256 / 64;
 130                                         else if (t == 2)
 131                                                 r = (y % 32) * 256 / 32;
 132                                 } else {
 133                                         if (t == 0)
 134                                                 b = (y % 256);
 135                                         else if (t == 1)
 136                                                 g = (y % 256);
 137                                         else if (t == 2)
 138                                                 r = (y % 256);
 139                                 }
 140                                 c = (r << 16) | (g << 8) | (b << 0);
 141                                 draw_pixel(fbi, x, y, c);
 142                         } else {
 143                                 draw_pixel(fbi, x, y, 0);
 144                         }
 145                 }
 146         }
 147 }
 148 #endif
 149
 150 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
 151 {
 152         const struct vrfb *vrfb = &ofbi->region->vrfb;
 153         unsigned offset;
 154
 155         switch (rot) {
 156         case FB_ROTATE_UR:
 157                 offset = 0;
 158                 break;
 159         case FB_ROTATE_CW:
 160                 offset = vrfb->yoffset;
 161                 break;
 162         case FB_ROTATE_UD:
 163                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 164                 break;
 165         case FB_ROTATE_CCW:
 166                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 167                 break;
 168         default:
 169                 BUG();
 170                 return 0;
 171         }
 172
 173         offset *= vrfb->bytespp;
 174
 175         return offset;
 176 }
 177
 178 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
 179 {
 180         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 181                 return ofbi->region->vrfb.paddr[rot]
 182                         + omapfb_get_vrfb_offset(ofbi, rot);
 183         } else {
 184                 return ofbi->region->paddr;
 185         }
 186 }
 187
 188 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
 189 {
 190         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 191                 return ofbi->region->vrfb.paddr[0];
 192         else
 193                 return ofbi->region->paddr;
 194 }
 195
 196 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
 197 {
 198         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 199                 return ofbi->region->vrfb.vaddr[0];
 200         else
 201                 return ofbi->region->vaddr;
 202 }
 203
 204 static struct omapfb_colormode omapfb_colormodes[] = {
 205         {
 206                 .dssmode = OMAP_DSS_COLOR_UYVY,
 207                 .bits_per_pixel = 16,
 208                 .nonstd = OMAPFB_COLOR_YUV422,
 209         }, {
 210                 .dssmode = OMAP_DSS_COLOR_YUV2,
 211                 .bits_per_pixel = 16,
 212                 .nonstd = OMAPFB_COLOR_YUY422,
 213         }, {
 214                 .dssmode = OMAP_DSS_COLOR_ARGB16,
 215                 .bits_per_pixel = 16,
 216                 .red    = { .length = 4, .offset = 8, .msb_right = 0 },
 217                 .green  = { .length = 4, .offset = 4, .msb_right = 0 },
 218                 .blue   = { .length = 4, .offset = 0, .msb_right = 0 },
 219                 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
 220         }, {
 221                 .dssmode = OMAP_DSS_COLOR_RGB16,
 222                 .bits_per_pixel = 16,
 223                 .red    = { .length = 5, .offset = 11, .msb_right = 0 },
 224                 .green  = { .length = 6, .offset = 5, .msb_right = 0 },
 225                 .blue   = { .length = 5, .offset = 0, .msb_right = 0 },
 226                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 227         }, {
 228                 .dssmode = OMAP_DSS_COLOR_RGB24P,
 229                 .bits_per_pixel = 24,
 230                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 231                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 232                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 233                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 234         }, {
 235                 .dssmode = OMAP_DSS_COLOR_RGB24U,
 236                 .bits_per_pixel = 32,
 237                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 238                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 239                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 240                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 241         }, {
 242                 .dssmode = OMAP_DSS_COLOR_ARGB32,
 243                 .bits_per_pixel = 32,
 244                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 245                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 246                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 247                 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
 248         }, {
 249                 .dssmode = OMAP_DSS_COLOR_RGBA32,
 250                 .bits_per_pixel = 32,
 251                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 252                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 253                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 254                 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
 255         }, {
 256                 .dssmode = OMAP_DSS_COLOR_RGBX32,
 257                 .bits_per_pixel = 32,
 258                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 259                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 260                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 261                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 262         },
 263 };
 264
 265 static bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
 266 {
 267         return f1->length == f2->length &&
 268                 f1->offset == f2->offset &&
 269                 f1->msb_right == f2->msb_right;
 270 }
 271
 272 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
 273                 struct omapfb_colormode *color)
 274 {
 275         if (var->bits_per_pixel == 0 ||
 276                         var->red.length == 0 ||
 277                         var->blue.length == 0 ||
 278                         var->green.length == 0)
 279                 return false;
 280
 281         return var->bits_per_pixel == color->bits_per_pixel &&
 282                 cmp_component(&var->red, &color->red) &&
 283                 cmp_component(&var->green, &color->green) &&
 284                 cmp_component(&var->blue, &color->blue) &&
 285                 cmp_component(&var->transp, &color->transp);
 286 }
 287
 288 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
 289                 struct omapfb_colormode *color)
 290 {
 291         var->bits_per_pixel = color->bits_per_pixel;
 292         var->nonstd = color->nonstd;
 293         var->red = color->red;
 294         var->green = color->green;
 295         var->blue = color->blue;
 296         var->transp = color->transp;
 297 }
 298
 299 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
 300                 enum omap_color_mode *mode)
 301 {
 302         enum omap_color_mode dssmode;
 303         int i;
 304
 305         /* first match with nonstd field */
 306         if (var->nonstd) {
 307                 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 308                         struct omapfb_colormode *m = &omapfb_colormodes[i];
 309                         if (var->nonstd == m->nonstd) {
 310                                 assign_colormode_to_var(var, m);
 311                                 *mode = m->dssmode;
 312                                 return 0;
 313                         }
 314                 }
 315
 316                 return -EINVAL;
 317         }
 318
 319         /* then try exact match of bpp and colors */
 320         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 321                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 322                 if (cmp_var_to_colormode(var, m)) {
 323                         assign_colormode_to_var(var, m);
 324                         *mode = m->dssmode;
 325                         return 0;
 326                 }
 327         }
 328
 329         /* match with bpp if user has not filled color fields
 330          * properly */
 331         switch (var->bits_per_pixel) {
 332         case 1:
 333                 dssmode = OMAP_DSS_COLOR_CLUT1;
 334                 break;
 335         case 2:
 336                 dssmode = OMAP_DSS_COLOR_CLUT2;
 337                 break;
 338         case 4:
 339                 dssmode = OMAP_DSS_COLOR_CLUT4;
 340                 break;
 341         case 8:
 342                 dssmode = OMAP_DSS_COLOR_CLUT8;
 343                 break;
 344         case 12:
 345                 dssmode = OMAP_DSS_COLOR_RGB12U;
 346                 break;
 347         case 16:
 348                 dssmode = OMAP_DSS_COLOR_RGB16;
 349                 break;
 350         case 24:
 351                 dssmode = OMAP_DSS_COLOR_RGB24P;
 352                 break;
 353         case 32:
 354                 dssmode = OMAP_DSS_COLOR_RGB24U;
 355                 break;
 356         default:
 357                 return -EINVAL;
 358         }
 359
 360         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 361                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 362                 if (dssmode == m->dssmode) {
 363                         assign_colormode_to_var(var, m);
 364                         *mode = m->dssmode;
 365                         return 0;
 366                 }
 367         }
 368
 369         return -EINVAL;
 370 }
 371
 372 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
 373 {
 374         int xres_min = OMAPFB_PLANE_XRES_MIN;
 375         int xres_max = 2048;
 376         int yres_min = OMAPFB_PLANE_YRES_MIN;
 377         int yres_max = 2048;
 378
 379         /* XXX: some applications seem to set virtual res to 0. */
 380         if (var->xres_virtual == 0)
 381                 var->xres_virtual = var->xres;
 382
 383         if (var->yres_virtual == 0)
 384                 var->yres_virtual = var->yres;
 385
 386         if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
 387                 return -EINVAL;
 388
 389         if (var->xres < xres_min)
 390                 var->xres = xres_min;
 391         if (var->yres < yres_min)
 392                 var->yres = yres_min;
 393         if (var->xres > xres_max)
 394                 var->xres = xres_max;
 395         if (var->yres > yres_max)
 396                 var->yres = yres_max;
 397
 398         if (var->xres > var->xres_virtual)
 399                 var->xres = var->xres_virtual;
 400         if (var->yres > var->yres_virtual)
 401                 var->yres = var->yres_virtual;
 402
 403         return 0;
 404 }
 405
 406 static void shrink_height(unsigned long max_frame_size,
 407                 struct fb_var_screeninfo *var)
 408 {
 409         DBG("can't fit FB into memory, reducing y\n");
 410         var->yres_virtual = max_frame_size /
 411                 (var->xres_virtual * var->bits_per_pixel >> 3);
 412
 413         if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
 414                 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
 415
 416         if (var->yres > var->yres_virtual)
 417                 var->yres = var->yres_virtual;
 418 }
 419
 420 static void shrink_width(unsigned long max_frame_size,
 421                 struct fb_var_screeninfo *var)
 422 {
 423         DBG("can't fit FB into memory, reducing x\n");
 424         var->xres_virtual = max_frame_size / var->yres_virtual /
 425                 (var->bits_per_pixel >> 3);
 426
 427         if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
 428                 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
 429
 430         if (var->xres > var->xres_virtual)
 431                 var->xres = var->xres_virtual;
 432 }
 433
 434 static int check_vrfb_fb_size(unsigned long region_size,
 435                 const struct fb_var_screeninfo *var)
 436 {
 437         unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
 438                 var->yres_virtual, var->bits_per_pixel >> 3);
 439
 440         return min_phys_size > region_size ? -EINVAL : 0;
 441 }
 442
 443 static int check_fb_size(const struct omapfb_info *ofbi,
 444                 struct fb_var_screeninfo *var)
 445 {
 446         unsigned long max_frame_size = ofbi->region->size;
 447         int bytespp = var->bits_per_pixel >> 3;
 448         unsigned long line_size = var->xres_virtual * bytespp;
 449
 450         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 451                 /* One needs to check for both VRFB and OMAPFB limitations. */
 452                 if (check_vrfb_fb_size(max_frame_size, var))
 453                         shrink_height(omap_vrfb_max_height(
 454                                 max_frame_size, var->xres_virtual, bytespp) *
 455                                 line_size, var);
 456
 457                 if (check_vrfb_fb_size(max_frame_size, var)) {
 458                         DBG("cannot fit FB to memory\n");
 459                         return -EINVAL;
 460                 }
 461
 462                 return 0;
 463         }
 464
 465         DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
 466
 467         if (line_size * var->yres_virtual > max_frame_size)
 468                 shrink_height(max_frame_size, var);
 469
 470         if (line_size * var->yres_virtual > max_frame_size) {
 471                 shrink_width(max_frame_size, var);
 472                 line_size = var->xres_virtual * bytespp;
 473         }
 474
 475         if (line_size * var->yres_virtual > max_frame_size) {
 476                 DBG("cannot fit FB to memory\n");
 477                 return -EINVAL;
 478         }
 479
 480         return 0;
 481 }
 482
 483 /*
 484  * Consider if VRFB assisted rotation is in use and if the virtual space for
 485  * the zero degree view needs to be mapped. The need for mapping also acts as
 486  * the trigger for setting up the hardware on the context in question. This
 487  * ensures that one does not attempt to access the virtual view before the
 488  * hardware is serving the address translations.
 489  */
 490 static int setup_vrfb_rotation(struct fb_info *fbi)
 491 {
 492         struct omapfb_info *ofbi = FB2OFB(fbi);
 493         struct omapfb2_mem_region *rg = ofbi->region;
 494         struct vrfb *vrfb = &rg->vrfb;
 495         struct fb_var_screeninfo *var = &fbi->var;
 496         struct fb_fix_screeninfo *fix = &fbi->fix;
 497         unsigned bytespp;
 498         bool yuv_mode;
 499         enum omap_color_mode mode;
 500         int r;
 501         bool reconf;
 502
 503         if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
 504                 return 0;
 505
 506         DBG("setup_vrfb_rotation\n");
 507
 508         r = fb_mode_to_dss_mode(var, &mode);
 509         if (r)
 510                 return r;
 511
 512         bytespp = var->bits_per_pixel >> 3;
 513
 514         yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
 515
 516         /* We need to reconfigure VRFB if the resolution changes, if yuv mode
 517          * is enabled/disabled, or if bytes per pixel changes */
 518
 519         /* XXX we shouldn't allow this when framebuffer is mmapped */
 520
 521         reconf = false;
 522
 523         if (yuv_mode != vrfb->yuv_mode)
 524                 reconf = true;
 525         else if (bytespp != vrfb->bytespp)
 526                 reconf = true;
 527         else if (vrfb->xres != var->xres_virtual ||
 528                         vrfb->yres != var->yres_virtual)
 529                 reconf = true;
 530
 531         if (vrfb->vaddr[0] && reconf) {
 532                 fbi->screen_base = NULL;
 533                 fix->smem_start = 0;
 534                 fix->smem_len = 0;
 535                 iounmap(vrfb->vaddr[0]);
 536                 vrfb->vaddr[0] = NULL;
 537                 DBG("setup_vrfb_rotation: reset fb\n");
 538         }
 539
 540         if (vrfb->vaddr[0])
 541                 return 0;
 542
 543         omap_vrfb_setup(&rg->vrfb, rg->paddr,
 544                         var->xres_virtual,
 545                         var->yres_virtual,
 546                         bytespp, yuv_mode);
 547
 548         /* Now one can ioremap the 0 angle view */
 549         r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
 550         if (r)
 551                 return r;
 552
 553         /* used by open/write in fbmem.c */
 554         fbi->screen_base = ofbi->region->vrfb.vaddr[0];
 555
 556         fix->smem_start = ofbi->region->vrfb.paddr[0];
 557
 558         switch (var->nonstd) {
 559         case OMAPFB_COLOR_YUV422:
 560         case OMAPFB_COLOR_YUY422:
 561                 fix->line_length =
 562                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 563                 break;
 564         default:
 565                 fix->line_length =
 566                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 567                 break;
 568         }
 569
 570         fix->smem_len = var->yres_virtual * fix->line_length;
 571
 572         return 0;
 573 }
 574
 575 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
 576                         struct fb_var_screeninfo *var)
 577 {
 578         int i;
 579
 580         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 581                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 582                 if (dssmode == mode->dssmode) {
 583                         assign_colormode_to_var(var, mode);
 584                         return 0;
 585                 }
 586         }
 587         return -ENOENT;
 588 }
 589
 590 void set_fb_fix(struct fb_info *fbi)
 591 {
 592         struct fb_fix_screeninfo *fix = &fbi->fix;
 593         struct fb_var_screeninfo *var = &fbi->var;
 594         struct omapfb_info *ofbi = FB2OFB(fbi);
 595         struct omapfb2_mem_region *rg = ofbi->region;
 596
 597         DBG("set_fb_fix\n");
 598
 599         /* used by open/write in fbmem.c */
 600         fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
 601
 602         /* used by mmap in fbmem.c */
 603         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 604                 switch (var->nonstd) {
 605                 case OMAPFB_COLOR_YUV422:
 606                 case OMAPFB_COLOR_YUY422:
 607                         fix->line_length =
 608                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 609                         break;
 610                 default:
 611                         fix->line_length =
 612                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 613                         break;
 614                 }
 615
 616                 fix->smem_len = var->yres_virtual * fix->line_length;
 617         } else {
 618                 fix->line_length =
 619                         (var->xres_virtual * var->bits_per_pixel) >> 3;
 620                 fix->smem_len = rg->size;
 621         }
 622
 623         fix->smem_start = omapfb_get_region_paddr(ofbi);
 624
 625         fix->type = FB_TYPE_PACKED_PIXELS;
 626
 627         if (var->nonstd)
 628                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 629         else {
 630                 switch (var->bits_per_pixel) {
 631                 case 32:
 632                 case 24:
 633                 case 16:
 634                 case 12:
 635                         fix->visual = FB_VISUAL_TRUECOLOR;
 636                         /* 12bpp is stored in 16 bits */
 637                         break;
 638                 case 1:
 639                 case 2:
 640                 case 4:
 641                 case 8:
 642                         fix->visual = FB_VISUAL_PSEUDOCOLOR;
 643                         break;
 644                 }
 645         }
 646
 647         fix->accel = FB_ACCEL_NONE;
 648
 649         fix->xpanstep = 1;
 650         fix->ypanstep = 1;
 651 }
 652
 653 /* check new var and possibly modify it to be ok */
 654 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 655 {
 656         struct omapfb_info *ofbi = FB2OFB(fbi);
 657         struct omap_dss_device *display = fb2display(fbi);
 658         enum omap_color_mode mode = 0;
 659         int i;
 660         int r;
 661
 662         DBG("check_fb_var %d\n", ofbi->id);
 663
 664         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 665
 666         r = fb_mode_to_dss_mode(var, &mode);
 667         if (r) {
 668                 DBG("cannot convert var to omap dss mode\n");
 669                 return r;
 670         }
 671
 672         for (i = 0; i < ofbi->num_overlays; ++i) {
 673                 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
 674                         DBG("invalid mode\n");
 675                         return -EINVAL;
 676                 }
 677         }
 678
 679         if (var->rotate > 3)
 680                 return -EINVAL;
 681
 682         if (check_fb_res_bounds(var))
 683                 return -EINVAL;
 684
 685         /* When no memory is allocated ignore the size check */
 686         if (ofbi->region->size != 0 && check_fb_size(ofbi, var))
 687                 return -EINVAL;
 688
 689         if (var->xres + var->xoffset > var->xres_virtual)
 690                 var->xoffset = var->xres_virtual - var->xres;
 691         if (var->yres + var->yoffset > var->yres_virtual)
 692                 var->yoffset = var->yres_virtual - var->yres;
 693
 694         DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
 695                         var->xres, var->yres,
 696                         var->xres_virtual, var->yres_virtual);
 697
 698         if (display && display->driver->get_dimensions) {
 699                 u32 w, h;
 700                 display->driver->get_dimensions(display, &w, &h);
 701                 var->width = DIV_ROUND_CLOSEST(w, 1000);
 702                 var->height = DIV_ROUND_CLOSEST(h, 1000);
 703         } else {
 704                 var->height = -1;
 705                 var->width = -1;
 706         }
 707
 708         var->grayscale          = 0;
 709
 710         if (display && display->driver->get_timings) {
 711                 struct omap_video_timings timings;
 712                 display->driver->get_timings(display, &timings);
 713
 714                 /* pixclock in ps, the rest in pixclock */
 715                 var->pixclock = timings.pixelclock != 0 ?
 716                         KHZ2PICOS(timings.pixelclock / 1000) :
 717                         0;
 718                 var->left_margin = timings.hbp;
 719                 var->right_margin = timings.hfp;
 720                 var->upper_margin = timings.vbp;
 721                 var->lower_margin = timings.vfp;
 722                 var->hsync_len = timings.hsw;
 723                 var->vsync_len = timings.vsw;
 724                 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
 725                                 FB_SYNC_HOR_HIGH_ACT : 0;
 726                 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ?
 727                                 FB_SYNC_VERT_HIGH_ACT : 0;
 728                 var->vmode = timings.interlace ?
 729                                 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED;
 730         } else {
 731                 var->pixclock = 0;
 732                 var->left_margin = 0;
 733                 var->right_margin = 0;
 734                 var->upper_margin = 0;
 735                 var->lower_margin = 0;
 736                 var->hsync_len = 0;
 737                 var->vsync_len = 0;
 738                 var->sync = 0;
 739                 var->vmode = FB_VMODE_NONINTERLACED;
 740         }
 741
 742         return 0;
 743 }
 744
 745 /*
 746  * ---------------------------------------------------------------------------
 747  * fbdev framework callbacks
 748  * ---------------------------------------------------------------------------
 749  */
 750 static int omapfb_open(struct fb_info *fbi, int user)
 751 {
 752         return 0;
 753 }
 754
 755 static int omapfb_release(struct fb_info *fbi, int user)
 756 {
 757         return 0;
 758 }
 759
 760 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
 761                 const struct fb_fix_screeninfo *fix, int rotation)
 762 {
 763         unsigned offset;
 764
 765         offset = var->yoffset * fix->line_length +
 766                 var->xoffset * (var->bits_per_pixel >> 3);
 767
 768         return offset;
 769 }
 770
 771 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
 772                 const struct fb_fix_screeninfo *fix, int rotation)
 773 {
 774         unsigned offset;
 775
 776         if (rotation == FB_ROTATE_UD)
 777                 offset = (var->yres_virtual - var->yres) *
 778                         fix->line_length;
 779         else if (rotation == FB_ROTATE_CW)
 780                 offset = (var->yres_virtual - var->yres) *
 781                         (var->bits_per_pixel >> 3);
 782         else
 783                 offset = 0;
 784
 785         if (rotation == FB_ROTATE_UR)
 786                 offset += var->yoffset * fix->line_length +
 787                         var->xoffset * (var->bits_per_pixel >> 3);
 788         else if (rotation == FB_ROTATE_UD)
 789                 offset -= var->yoffset * fix->line_length +
 790                         var->xoffset * (var->bits_per_pixel >> 3);
 791         else if (rotation == FB_ROTATE_CW)
 792                 offset -= var->xoffset * fix->line_length +
 793                         var->yoffset * (var->bits_per_pixel >> 3);
 794         else if (rotation == FB_ROTATE_CCW)
 795                 offset += var->xoffset * fix->line_length +
 796                         var->yoffset * (var->bits_per_pixel >> 3);
 797
 798         return offset;
 799 }
 800
 801 static void omapfb_calc_addr(const struct omapfb_info *ofbi,
 802                              const struct fb_var_screeninfo *var,
 803                              const struct fb_fix_screeninfo *fix,
 804                              int rotation, u32 *paddr)
 805 {
 806         u32 data_start_p;
 807         int offset;
 808
 809         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 810                 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
 811         else
 812                 data_start_p = omapfb_get_region_paddr(ofbi);
 813
 814         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 815                 offset = calc_rotation_offset_vrfb(var, fix, rotation);
 816         else
 817                 offset = calc_rotation_offset_dma(var, fix, rotation);
 818
 819         data_start_p += offset;
 820
 821         if (offset)
 822                 DBG("offset %d, %d = %d\n",
 823                     var->xoffset, var->yoffset, offset);
 824
 825         DBG("paddr %x\n", data_start_p);
 826
 827         *paddr = data_start_p;
 828 }
 829
 830 /* setup overlay according to the fb */
 831 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 832                 u16 posx, u16 posy, u16 outw, u16 outh)
 833 {
 834         int r = 0;
 835         struct omapfb_info *ofbi = FB2OFB(fbi);
 836         struct fb_var_screeninfo *var = &fbi->var;
 837         struct fb_fix_screeninfo *fix = &fbi->fix;
 838         enum omap_color_mode mode = 0;
 839         u32 data_start_p = 0;
 840         struct omap_overlay_info info;
 841         int xres, yres;
 842         int screen_width;
 843         int mirror;
 844         int rotation = var->rotate;
 845         int i;
 846
 847         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 848
 849         for (i = 0; i < ofbi->num_overlays; i++) {
 850                 if (ovl != ofbi->overlays[i])
 851                         continue;
 852
 853                 rotation = (rotation + ofbi->rotation[i]) % 4;
 854                 break;
 855         }
 856
 857         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 858                         posx, posy, outw, outh);
 859
 860         if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
 861                 xres = var->yres;
 862                 yres = var->xres;
 863         } else {
 864                 xres = var->xres;
 865                 yres = var->yres;
 866         }
 867
 868         if (ofbi->region->size)
 869                 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p);
 870
 871         r = fb_mode_to_dss_mode(var, &mode);
 872         if (r) {
 873                 DBG("fb_mode_to_dss_mode failed");
 874                 goto err;
 875         }
 876
 877         switch (var->nonstd) {
 878         case OMAPFB_COLOR_YUV422:
 879         case OMAPFB_COLOR_YUY422:
 880                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 881                         screen_width = fix->line_length
 882                                 / (var->bits_per_pixel >> 2);
 883                         break;
 884                 }
 885                 fallthrough;
 886         default:
 887                 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 888                 break;
 889         }
 890
 891         ovl->get_overlay_info(ovl, &info);
 892
 893         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 894                 mirror = 0;
 895         else
 896                 mirror = ofbi->mirror;
 897
 898         info.paddr = data_start_p;
 899         info.screen_width = screen_width;
 900         info.width = xres;
 901         info.height = yres;
 902         info.color_mode = mode;
 903         info.rotation_type = ofbi->rotation_type;
 904         info.rotation = rotation;
 905         info.mirror = mirror;
 906
 907         info.pos_x = posx;
 908         info.pos_y = posy;
 909         info.out_width = outw;
 910         info.out_height = outh;
 911
 912         r = ovl->set_overlay_info(ovl, &info);
 913         if (r) {
 914                 DBG("ovl->setup_overlay_info failed\n");
 915                 goto err;
 916         }
 917
 918         return 0;
 919
 920 err:
 921         DBG("setup_overlay failed\n");
 922         return r;
 923 }
 924
 925 /* apply var to the overlay */
 926 int omapfb_apply_changes(struct fb_info *fbi, int init)
 927 {
 928         int r = 0;
 929         struct omapfb_info *ofbi = FB2OFB(fbi);
 930         struct fb_var_screeninfo *var = &fbi->var;
 931         struct omap_overlay *ovl;
 932         u16 posx, posy;
 933         u16 outw, outh;
 934         int i;
 935
 936 #ifdef DEBUG
 937         if (omapfb_test_pattern)
 938                 fill_fb(fbi);
 939 #endif
 940
 941         WARN_ON(!atomic_read(&ofbi->region->lock_count));
 942
 943         for (i = 0; i < ofbi->num_overlays; i++) {
 944                 ovl = ofbi->overlays[i];
 945
 946                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 947
 948                 if (ofbi->region->size == 0) {
 949                         /* the fb is not available. disable the overlay */
 950                         omapfb_overlay_enable(ovl, 0);
 951                         if (!init && ovl->manager)
 952                                 ovl->manager->apply(ovl->manager);
 953                         continue;
 954                 }
 955
 956                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 957                         int rotation = (var->rotate + ofbi->rotation[i]) % 4;
 958                         if (rotation == FB_ROTATE_CW ||
 959                                         rotation == FB_ROTATE_CCW) {
 960                                 outw = var->yres;
 961                                 outh = var->xres;
 962                         } else {
 963                                 outw = var->xres;
 964                                 outh = var->yres;
 965                         }
 966                 } else {
 967                         struct omap_overlay_info info;
 968                         ovl->get_overlay_info(ovl, &info);
 969                         outw = info.out_width;
 970                         outh = info.out_height;
 971                 }
 972
 973                 if (init) {
 974                         posx = 0;
 975                         posy = 0;
 976                 } else {
 977                         struct omap_overlay_info info;
 978                         ovl->get_overlay_info(ovl, &info);
 979                         posx = info.pos_x;
 980                         posy = info.pos_y;
 981                 }
 982
 983                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
 984                 if (r)
 985                         goto err;
 986
 987                 if (!init && ovl->manager)
 988                         ovl->manager->apply(ovl->manager);
 989         }
 990         return 0;
 991 err:
 992         DBG("apply_changes failed\n");
 993         return r;
 994 }
 995
 996 /* checks var and eventually tweaks it to something supported,
 997  * DO NOT MODIFY PAR */
 998 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 999 {
1000         struct omapfb_info *ofbi = FB2OFB(fbi);
1001         int r;
1002
1003         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1004
1005         omapfb_get_mem_region(ofbi->region);
1006
1007         r = check_fb_var(fbi, var);
1008
1009         omapfb_put_mem_region(ofbi->region);
1010
1011         return r;
1012 }
1013
1014 /* set the video mode according to info->var */
1015 static int omapfb_set_par(struct fb_info *fbi)
1016 {
1017         struct omapfb_info *ofbi = FB2OFB(fbi);
1018         int r;
1019
1020         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1021
1022         omapfb_get_mem_region(ofbi->region);
1023
1024         set_fb_fix(fbi);
1025
1026         r = setup_vrfb_rotation(fbi);
1027         if (r)
1028                 goto out;
1029
1030         r = omapfb_apply_changes(fbi, 0);
1031
1032  out:
1033         omapfb_put_mem_region(ofbi->region);
1034
1035         return r;
1036 }
1037
1038 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1039                 struct fb_info *fbi)
1040 {
1041         struct omapfb_info *ofbi = FB2OFB(fbi);
1042         struct fb_var_screeninfo new_var;
1043         int r;
1044
1045         DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1046
1047         if (var->xoffset == fbi->var.xoffset &&
1048             var->yoffset == fbi->var.yoffset)
1049                 return 0;
1050
1051         new_var = fbi->var;
1052         new_var.xoffset = var->xoffset;
1053         new_var.yoffset = var->yoffset;
1054
1055         fbi->var = new_var;
1056
1057         omapfb_get_mem_region(ofbi->region);
1058
1059         r = omapfb_apply_changes(fbi, 0);
1060
1061         omapfb_put_mem_region(ofbi->region);
1062
1063         return r;
1064 }
1065
1066 static void mmap_user_open(struct vm_area_struct *vma)
1067 {
1068         struct omapfb2_mem_region *rg = vma->vm_private_data;
1069
1070         omapfb_get_mem_region(rg);
1071         atomic_inc(&rg->map_count);
1072         omapfb_put_mem_region(rg);
1073 }
1074
1075 static void mmap_user_close(struct vm_area_struct *vma)
1076 {
1077         struct omapfb2_mem_region *rg = vma->vm_private_data;
1078
1079         omapfb_get_mem_region(rg);
1080         atomic_dec(&rg->map_count);
1081         omapfb_put_mem_region(rg);
1082 }
1083
1084 static const struct vm_operations_struct mmap_user_ops = {
1085         .open = mmap_user_open,
1086         .close = mmap_user_close,
1087 };
1088
1089 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1090 {
1091         struct omapfb_info *ofbi = FB2OFB(fbi);
1092         struct fb_fix_screeninfo *fix = &fbi->fix;
1093         struct omapfb2_mem_region *rg;
1094         unsigned long start;
1095         u32 len;
1096         int r;
1097
1098         rg = omapfb_get_mem_region(ofbi->region);
1099
1100         start = omapfb_get_region_paddr(ofbi);
1101         len = fix->smem_len;
1102
1103         DBG("user mmap region start %lx, len %d, off %lx\n", start, len,
1104                         vma->vm_pgoff << PAGE_SHIFT);
1105
1106         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1107         vma->vm_ops = &mmap_user_ops;
1108         vma->vm_private_data = rg;
1109
1110         r = vm_iomap_memory(vma, start, len);
1111         if (r)
1112                 goto error;
1113
1114         /* vm_ops.open won't be called for mmap itself. */
1115         atomic_inc(&rg->map_count);
1116
1117         omapfb_put_mem_region(rg);
1118
1119         return 0;
1120
1121 error:
1122         omapfb_put_mem_region(ofbi->region);
1123
1124         return r;
1125 }
1126
1127 /* Store a single color palette entry into a pseudo palette or the hardware
1128  * palette if one is available. For now we support only 16bpp and thus store
1129  * the entry only to the pseudo palette.
1130  */
1131 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1132                 u_int blue, u_int transp, int update_hw_pal)
1133 {
1134         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1135         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1136         struct fb_var_screeninfo *var = &fbi->var;
1137         int r = 0;
1138
1139         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1140
1141         /*switch (plane->color_mode) {*/
1142         switch (mode) {
1143         case OMAPFB_COLOR_YUV422:
1144         case OMAPFB_COLOR_YUV420:
1145         case OMAPFB_COLOR_YUY422:
1146                 r = -EINVAL;
1147                 break;
1148         case OMAPFB_COLOR_CLUT_8BPP:
1149         case OMAPFB_COLOR_CLUT_4BPP:
1150         case OMAPFB_COLOR_CLUT_2BPP:
1151         case OMAPFB_COLOR_CLUT_1BPP:
1152                 /*
1153                    if (fbdev->ctrl->setcolreg)
1154                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1155                    transp, update_hw_pal);
1156                    */
1157                 r = -EINVAL;
1158                 break;
1159         case OMAPFB_COLOR_RGB565:
1160         case OMAPFB_COLOR_RGB444:
1161         case OMAPFB_COLOR_RGB24P:
1162         case OMAPFB_COLOR_RGB24U:
1163                 if (regno < 16) {
1164                         u32 pal;
1165                         pal = ((red >> (16 - var->red.length)) <<
1166                                         var->red.offset) |
1167                                 ((green >> (16 - var->green.length)) <<
1168                                  var->green.offset) |
1169                                 (blue >> (16 - var->blue.length));
1170                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1171                 }
1172                 break;
1173         default:
1174                 BUG();
1175         }
1176         return r;
1177 }
1178
1179 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1180                 u_int transp, struct fb_info *info)
1181 {
1182         DBG("setcolreg\n");
1183
1184         return _setcolreg(info, regno, red, green, blue, transp, 1);
1185 }
1186
1187 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1188 {
1189         int count, index, r;
1190         u16 *red, *green, *blue, *transp;
1191         u16 trans = 0xffff;
1192
1193         DBG("setcmap\n");
1194
1195         red     = cmap->red;
1196         green   = cmap->green;
1197         blue    = cmap->blue;
1198         transp  = cmap->transp;
1199         index   = cmap->start;
1200
1201         for (count = 0; count < cmap->len; count++) {
1202                 if (transp)
1203                         trans = *transp++;
1204                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1205                                 count == cmap->len - 1);
1206                 if (r != 0)
1207                         return r;
1208         }
1209
1210         return 0;
1211 }
1212
1213 static int omapfb_blank(int blank, struct fb_info *fbi)
1214 {
1215         struct omapfb_info *ofbi = FB2OFB(fbi);
1216         struct omapfb2_device *fbdev = ofbi->fbdev;
1217         struct omap_dss_device *display = fb2display(fbi);
1218         struct omapfb_display_data *d;
1219         int r = 0;
1220
1221         if (!display)
1222                 return -EINVAL;
1223
1224         omapfb_lock(fbdev);
1225
1226         d = get_display_data(fbdev, display);
1227
1228         switch (blank) {
1229         case FB_BLANK_UNBLANK:
1230                 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1231                         goto exit;
1232
1233                 r = display->driver->enable(display);
1234
1235                 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1236                                 d->update_mode == OMAPFB_AUTO_UPDATE &&
1237                                 !d->auto_update_work_enabled)
1238                         omapfb_start_auto_update(fbdev, display);
1239
1240                 break;
1241
1242         case FB_BLANK_NORMAL:
1243                 /* FB_BLANK_NORMAL could be implemented.
1244                  * Needs DSS additions. */
1245         case FB_BLANK_VSYNC_SUSPEND:
1246         case FB_BLANK_HSYNC_SUSPEND:
1247         case FB_BLANK_POWERDOWN:
1248                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1249                         goto exit;
1250
1251                 if (d->auto_update_work_enabled)
1252                         omapfb_stop_auto_update(fbdev, display);
1253
1254                 display->driver->disable(display);
1255
1256                 break;
1257
1258         default:
1259                 r = -EINVAL;
1260         }
1261
1262 exit:
1263         omapfb_unlock(fbdev);
1264
1265         return r;
1266 }
1267
1268 #if 0
1269 /* XXX fb_read and fb_write are needed for VRFB */
1270 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1271                 size_t count, loff_t *ppos)
1272 {
1273         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1274         /* XXX needed for VRFB */
1275         return count;
1276 }
1277 #endif
1278
1279 static const struct fb_ops omapfb_ops = {
1280         .owner          = THIS_MODULE,
1281         .fb_open        = omapfb_open,
1282         .fb_release     = omapfb_release,
1283         .fb_fillrect    = cfb_fillrect,
1284         .fb_copyarea    = cfb_copyarea,
1285         .fb_imageblit   = cfb_imageblit,
1286         .fb_blank       = omapfb_blank,
1287         .fb_ioctl       = omapfb_ioctl,
1288         .fb_check_var   = omapfb_check_var,
1289         .fb_set_par     = omapfb_set_par,
1290         .fb_pan_display = omapfb_pan_display,
1291         .fb_mmap        = omapfb_mmap,
1292         .fb_setcolreg   = omapfb_setcolreg,
1293         .fb_setcmap     = omapfb_setcmap,
1294         /*.fb_write     = omapfb_write,*/
1295 };
1296
1297 static void omapfb_free_fbmem(struct fb_info *fbi)
1298 {
1299         struct omapfb_info *ofbi = FB2OFB(fbi);
1300         struct omapfb2_device *fbdev = ofbi->fbdev;
1301         struct omapfb2_mem_region *rg;
1302
1303         rg = ofbi->region;
1304
1305         if (rg->token == NULL)
1306                 return;
1307
1308         WARN_ON(atomic_read(&rg->map_count));
1309
1310         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1311                 /* unmap the 0 angle rotation */
1312                 if (rg->vrfb.vaddr[0]) {
1313                         iounmap(rg->vrfb.vaddr[0]);
1314                         rg->vrfb.vaddr[0] = NULL;
1315                 }
1316
1317                 omap_vrfb_release_ctx(&rg->vrfb);
1318         }
1319
1320         dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1321                         rg->attrs);
1322
1323         rg->token = NULL;
1324         rg->vaddr = NULL;
1325         rg->paddr = 0;
1326         rg->alloc = 0;
1327         rg->size = 0;
1328 }
1329
1330 static void clear_fb_info(struct fb_info *fbi)
1331 {
1332         memset(&fbi->var, 0, sizeof(fbi->var));
1333         memset(&fbi->fix, 0, sizeof(fbi->fix));
1334         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1335 }
1336
1337 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1338 {
1339         int i;
1340
1341         DBG("free all fbmem\n");
1342
1343         for (i = 0; i < fbdev->num_fbs; i++) {
1344                 struct fb_info *fbi = fbdev->fbs[i];
1345                 omapfb_free_fbmem(fbi);
1346                 clear_fb_info(fbi);
1347         }
1348
1349         return 0;
1350 }
1351
1352 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1353                 unsigned long paddr)
1354 {
1355         struct omapfb_info *ofbi = FB2OFB(fbi);
1356         struct omapfb2_device *fbdev = ofbi->fbdev;
1357         struct omapfb2_mem_region *rg;
1358         void *token;
1359         unsigned long attrs;
1360         dma_addr_t dma_handle;
1361         int r;
1362
1363         rg = ofbi->region;
1364
1365         rg->paddr = 0;
1366         rg->vaddr = NULL;
1367         memset(&rg->vrfb, 0, sizeof rg->vrfb);
1368         rg->size = 0;
1369         rg->type = 0;
1370         rg->alloc = false;
1371         rg->map = false;
1372
1373         size = PAGE_ALIGN(size);
1374
1375         attrs = DMA_ATTR_WRITE_COMBINE;
1376
1377         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1378                 attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
1379
1380         DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1381
1382         token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1383                         GFP_KERNEL, attrs);
1384
1385         if (token == NULL) {
1386                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1387                 return -ENOMEM;
1388         }
1389
1390         DBG("allocated VRAM paddr %lx, vaddr %p\n",
1391                         (unsigned long)dma_handle, token);
1392
1393         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1394                 r = omap_vrfb_request_ctx(&rg->vrfb);
1395                 if (r) {
1396                         dma_free_attrs(fbdev->dev, size, token, dma_handle,
1397                                         attrs);
1398                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1399                         return r;
1400                 }
1401         }
1402
1403         rg->attrs = attrs;
1404         rg->token = token;
1405         rg->dma_handle = dma_handle;
1406
1407         rg->paddr = (unsigned long)dma_handle;
1408         rg->vaddr = (void __iomem *)token;
1409         rg->size = size;
1410         rg->alloc = 1;
1411
1412         return 0;
1413 }
1414
1415 /* allocate fbmem using display resolution as reference */
1416 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1417                 unsigned long paddr)
1418 {
1419         struct omapfb_info *ofbi = FB2OFB(fbi);
1420         struct omapfb2_device *fbdev = ofbi->fbdev;
1421         struct omap_dss_device *display;
1422         int bytespp;
1423
1424         display =  fb2display(fbi);
1425
1426         if (!display)
1427                 return 0;
1428
1429         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1430         case 16:
1431                 bytespp = 2;
1432                 break;
1433         case 24:
1434                 bytespp = 4;
1435                 break;
1436         default:
1437                 bytespp = 4;
1438                 break;
1439         }
1440
1441         if (!size) {
1442                 u16 w, h;
1443
1444                 display->driver->get_resolution(display, &w, &h);
1445
1446                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1447                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1448                                         omap_vrfb_min_phys_size(h, w, bytespp));
1449
1450                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1451                                         w * h * bytespp, size);
1452                 } else {
1453                         size = w * h * bytespp;
1454                 }
1455         }
1456
1457         if (!size)
1458                 return 0;
1459
1460         return omapfb_alloc_fbmem(fbi, size, paddr);
1461 }
1462
1463 static int omapfb_parse_vram_param(const char *param, int max_entries,
1464                 unsigned long *sizes, unsigned long *paddrs)
1465 {
1466         unsigned int fbnum;
1467         unsigned long size;
1468         unsigned long paddr = 0;
1469         char *p, *start;
1470
1471         start = (char *)param;
1472
1473         while (1) {
1474                 p = start;
1475
1476                 fbnum = simple_strtoul(p, &p, 10);
1477
1478                 if (p == start)
1479                         return -EINVAL;
1480
1481                 if (*p != ':')
1482                         return -EINVAL;
1483
1484                 if (fbnum >= max_entries)
1485                         return -EINVAL;
1486
1487                 size = memparse(p + 1, &p);
1488
1489                 if (!size)
1490                         return -EINVAL;
1491
1492                 paddr = 0;
1493
1494                 if (*p == '@') {
1495                         paddr = simple_strtoul(p + 1, &p, 16);
1496
1497                         if (!paddr)
1498                                 return -EINVAL;
1499
1500                 }
1501
1502                 WARN_ONCE(paddr,
1503                         "reserving memory at predefined address not supported\n");
1504
1505                 paddrs[fbnum] = paddr;
1506                 sizes[fbnum] = size;
1507
1508                 if (*p == 0)
1509                         break;
1510
1511                 if (*p != ',')
1512                         return -EINVAL;
1513
1514                 ++p;
1515
1516                 start = p;
1517         }
1518
1519         return 0;
1520 }
1521
1522 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1523 {
1524         int i, r;
1525         unsigned long vram_sizes[10];
1526         unsigned long vram_paddrs[10];
1527
1528         memset(&vram_sizes, 0, sizeof(vram_sizes));
1529         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1530
1531         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1532                                 vram_sizes, vram_paddrs)) {
1533                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1534
1535                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1536                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1537         }
1538
1539         for (i = 0; i < fbdev->num_fbs; i++) {
1540                 /* allocate memory automatically only for fb0, or if
1541                  * excplicitly defined with vram or plat data option */
1542                 if (i == 0 || vram_sizes[i] != 0) {
1543                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1544                                         vram_sizes[i], vram_paddrs[i]);
1545
1546                         if (r)
1547                                 return r;
1548                 }
1549         }
1550
1551         for (i = 0; i < fbdev->num_fbs; i++) {
1552                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1553                 struct omapfb2_mem_region *rg;
1554                 rg = ofbi->region;
1555
1556                 DBG("region%d phys %08x virt %p size=%lu\n",
1557                                 i,
1558                                 rg->paddr,
1559                                 rg->vaddr,
1560                                 rg->size);
1561         }
1562
1563         return 0;
1564 }
1565
1566 static void omapfb_clear_fb(struct fb_info *fbi)
1567 {
1568         const struct fb_fillrect rect = {
1569                 .dx = 0,
1570                 .dy = 0,
1571                 .width = fbi->var.xres_virtual,
1572                 .height = fbi->var.yres_virtual,
1573                 .color = 0,
1574                 .rop = ROP_COPY,
1575         };
1576
1577         cfb_fillrect(fbi, &rect);
1578 }
1579
1580 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1581 {
1582         struct omapfb_info *ofbi = FB2OFB(fbi);
1583         struct omapfb2_device *fbdev = ofbi->fbdev;
1584         struct omapfb2_mem_region *rg = ofbi->region;
1585         unsigned long old_size = rg->size;
1586         unsigned long old_paddr = rg->paddr;
1587         int old_type = rg->type;
1588         int r;
1589
1590         if (type != OMAPFB_MEMTYPE_SDRAM)
1591                 return -EINVAL;
1592
1593         size = PAGE_ALIGN(size);
1594
1595         if (old_size == size && old_type == type)
1596                 return 0;
1597
1598         omapfb_free_fbmem(fbi);
1599
1600         if (size == 0) {
1601                 clear_fb_info(fbi);
1602                 return 0;
1603         }
1604
1605         r = omapfb_alloc_fbmem(fbi, size, 0);
1606
1607         if (r) {
1608                 if (old_size)
1609                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1610
1611                 if (rg->size == 0)
1612                         clear_fb_info(fbi);
1613
1614                 return r;
1615         }
1616
1617         if (old_size == size)
1618                 return 0;
1619
1620         if (old_size == 0) {
1621                 DBG("initializing fb %d\n", ofbi->id);
1622                 r = omapfb_fb_init(fbdev, fbi);
1623                 if (r) {
1624                         DBG("omapfb_fb_init failed\n");
1625                         goto err;
1626                 }
1627                 r = omapfb_apply_changes(fbi, 1);
1628                 if (r) {
1629                         DBG("omapfb_apply_changes failed\n");
1630                         goto err;
1631                 }
1632         } else {
1633                 struct fb_var_screeninfo new_var;
1634                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1635                 r = check_fb_var(fbi, &new_var);
1636                 if (r)
1637                         goto err;
1638                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1639                 set_fb_fix(fbi);
1640                 r = setup_vrfb_rotation(fbi);
1641                 if (r)
1642                         goto err;
1643         }
1644
1645         omapfb_clear_fb(fbi);
1646
1647         return 0;
1648 err:
1649         omapfb_free_fbmem(fbi);
1650         clear_fb_info(fbi);
1651         return r;
1652 }
1653
1654 static void omapfb_auto_update_work(struct work_struct *work)
1655 {
1656         struct omap_dss_device *dssdev;
1657         struct omap_dss_driver *dssdrv;
1658         struct omapfb_display_data *d;
1659         u16 w, h;
1660         unsigned int freq;
1661         struct omapfb2_device *fbdev;
1662
1663         d = container_of(work, struct omapfb_display_data,
1664                         auto_update_work.work);
1665
1666         dssdev = d->dssdev;
1667         dssdrv = dssdev->driver;
1668         fbdev = d->fbdev;
1669
1670         if (!dssdrv || !dssdrv->update)
1671                 return;
1672
1673         if (dssdrv->sync)
1674                 dssdrv->sync(dssdev);
1675
1676         dssdrv->get_resolution(dssdev, &w, &h);
1677         dssdrv->update(dssdev, 0, 0, w, h);
1678
1679         freq = auto_update_freq;
1680         if (freq == 0)
1681                 freq = 20;
1682         queue_delayed_work(fbdev->auto_update_wq,
1683                         &d->auto_update_work, HZ / freq);
1684 }
1685
1686 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1687                 struct omap_dss_device *display)
1688 {
1689         struct omapfb_display_data *d;
1690
1691         if (fbdev->auto_update_wq == NULL) {
1692                 struct workqueue_struct *wq;
1693
1694                 wq = create_singlethread_workqueue("omapfb_auto_update");
1695
1696                 if (wq == NULL) {
1697                         dev_err(fbdev->dev, "Failed to create workqueue for "
1698                                         "auto-update\n");
1699                         return;
1700                 }
1701
1702                 fbdev->auto_update_wq = wq;
1703         }
1704
1705         d = get_display_data(fbdev, display);
1706
1707         INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1708
1709         d->auto_update_work_enabled = true;
1710
1711         omapfb_auto_update_work(&d->auto_update_work.work);
1712 }
1713
1714 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1715                 struct omap_dss_device *display)
1716 {
1717         struct omapfb_display_data *d;
1718
1719         d = get_display_data(fbdev, display);
1720
1721         cancel_delayed_work_sync(&d->auto_update_work);
1722
1723         d->auto_update_work_enabled = false;
1724 }
1725
1726 /* initialize fb_info, var, fix to something sane based on the display */
1727 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1728 {
1729         struct fb_var_screeninfo *var = &fbi->var;
1730         struct omap_dss_device *display = fb2display(fbi);
1731         struct omapfb_info *ofbi = FB2OFB(fbi);
1732         int r = 0;
1733
1734         fbi->fbops = &omapfb_ops;
1735         fbi->flags = FBINFO_FLAG_DEFAULT;
1736         fbi->pseudo_palette = fbdev->pseudo_palette;
1737
1738         if (ofbi->region->size == 0) {
1739                 clear_fb_info(fbi);
1740                 return 0;
1741         }
1742
1743         var->nonstd = 0;
1744         var->bits_per_pixel = 0;
1745
1746         var->rotate = def_rotate;
1747
1748         if (display) {
1749                 u16 w, h;
1750                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1751
1752                 display->driver->get_resolution(display, &w, &h);
1753
1754                 if (rotation == FB_ROTATE_CW ||
1755                                 rotation == FB_ROTATE_CCW) {
1756                         var->xres = h;
1757                         var->yres = w;
1758                 } else {
1759                         var->xres = w;
1760                         var->yres = h;
1761                 }
1762
1763                 var->xres_virtual = var->xres;
1764                 var->yres_virtual = var->yres;
1765
1766                 if (!var->bits_per_pixel) {
1767                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1768                         case 16:
1769                                 var->bits_per_pixel = 16;
1770                                 break;
1771                         case 24:
1772                                 var->bits_per_pixel = 32;
1773                                 break;
1774                         default:
1775                                 dev_err(fbdev->dev, "illegal display "
1776                                                 "bpp\n");
1777                                 return -EINVAL;
1778                         }
1779                 }
1780         } else {
1781                 /* if there's no display, let's just guess some basic values */
1782                 var->xres = 320;
1783                 var->yres = 240;
1784                 var->xres_virtual = var->xres;
1785                 var->yres_virtual = var->yres;
1786                 if (!var->bits_per_pixel)
1787                         var->bits_per_pixel = 16;
1788         }
1789
1790         r = check_fb_var(fbi, var);
1791         if (r)
1792                 goto err;
1793
1794         set_fb_fix(fbi);
1795         r = setup_vrfb_rotation(fbi);
1796         if (r)
1797                 goto err;
1798
1799         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1800         if (r)
1801                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1802
1803 err:
1804         return r;
1805 }
1806
1807 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1808 {
1809         fb_dealloc_cmap(&fbi->cmap);
1810 }
1811
1812
1813 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1814 {
1815         int i;
1816
1817         DBG("free_resources\n");
1818
1819         if (fbdev == NULL)
1820                 return;
1821
1822         for (i = 0; i < fbdev->num_overlays; i++) {
1823                 struct omap_overlay *ovl = fbdev->overlays[i];
1824
1825                 ovl->disable(ovl);
1826
1827                 if (ovl->manager)
1828                         ovl->unset_manager(ovl);
1829         }
1830
1831         for (i = 0; i < fbdev->num_fbs; i++)
1832                 unregister_framebuffer(fbdev->fbs[i]);
1833
1834         /* free the reserved fbmem */
1835         omapfb_free_all_fbmem(fbdev);
1836
1837         for (i = 0; i < fbdev->num_fbs; i++) {
1838                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1839                 framebuffer_release(fbdev->fbs[i]);
1840         }
1841
1842         for (i = 0; i < fbdev->num_displays; i++) {
1843                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1844
1845                 if (fbdev->displays[i].auto_update_work_enabled)
1846                         omapfb_stop_auto_update(fbdev, dssdev);
1847
1848                 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1849                         dssdev->driver->disable(dssdev);
1850
1851                 dssdev->driver->disconnect(dssdev);
1852
1853                 omap_dss_put_device(dssdev);
1854         }
1855
1856         if (fbdev->auto_update_wq != NULL) {
1857                 destroy_workqueue(fbdev->auto_update_wq);
1858                 fbdev->auto_update_wq = NULL;
1859         }
1860
1861         dev_set_drvdata(fbdev->dev, NULL);
1862 }
1863
1864 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1865 {
1866         int r, i;
1867
1868         fbdev->num_fbs = 0;
1869
1870         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1871
1872         /* allocate fb_infos */
1873         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1874                 struct fb_info *fbi;
1875                 struct omapfb_info *ofbi;
1876
1877                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1878                                 fbdev->dev);
1879                 if (!fbi)
1880                         return -ENOMEM;
1881
1882                 clear_fb_info(fbi);
1883
1884                 fbdev->fbs[i] = fbi;
1885
1886                 ofbi = FB2OFB(fbi);
1887                 ofbi->fbdev = fbdev;
1888                 ofbi->id = i;
1889
1890                 ofbi->region = &fbdev->regions[i];
1891                 ofbi->region->id = i;
1892                 init_rwsem(&ofbi->region->lock);
1893
1894                 /* assign these early, so that fb alloc can use them */
1895                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1896                         OMAP_DSS_ROT_DMA;
1897                 ofbi->mirror = def_mirror;
1898
1899                 fbdev->num_fbs++;
1900         }
1901
1902         DBG("fb_infos allocated\n");
1903
1904         /* assign overlays for the fbs */
1905         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1906                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1907
1908                 ofbi->overlays[0] = fbdev->overlays[i];
1909                 ofbi->num_overlays = 1;
1910         }
1911
1912         /* allocate fb memories */
1913         r = omapfb_allocate_all_fbs(fbdev);
1914         if (r) {
1915                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1916                 return r;
1917         }
1918
1919         DBG("fbmems allocated\n");
1920
1921         /* setup fb_infos */
1922         for (i = 0; i < fbdev->num_fbs; i++) {
1923                 struct fb_info *fbi = fbdev->fbs[i];
1924                 struct omapfb_info *ofbi = FB2OFB(fbi);
1925
1926                 omapfb_get_mem_region(ofbi->region);
1927                 r = omapfb_fb_init(fbdev, fbi);
1928                 omapfb_put_mem_region(ofbi->region);
1929
1930                 if (r) {
1931                         dev_err(fbdev->dev, "failed to setup fb_info\n");
1932                         return r;
1933                 }
1934         }
1935
1936         for (i = 0; i < fbdev->num_fbs; i++) {
1937                 struct fb_info *fbi = fbdev->fbs[i];
1938                 struct omapfb_info *ofbi = FB2OFB(fbi);
1939
1940                 if (ofbi->region->size == 0)
1941                         continue;
1942
1943                 omapfb_clear_fb(fbi);
1944         }
1945
1946         DBG("fb_infos initialized\n");
1947
1948         for (i = 0; i < fbdev->num_fbs; i++) {
1949                 r = register_framebuffer(fbdev->fbs[i]);
1950                 if (r != 0) {
1951                         dev_err(fbdev->dev,
1952                                 "registering framebuffer %d failed\n", i);
1953                         return r;
1954                 }
1955         }
1956
1957         DBG("framebuffers registered\n");
1958
1959         for (i = 0; i < fbdev->num_fbs; i++) {
1960                 struct fb_info *fbi = fbdev->fbs[i];
1961                 struct omapfb_info *ofbi = FB2OFB(fbi);
1962
1963                 omapfb_get_mem_region(ofbi->region);
1964                 r = omapfb_apply_changes(fbi, 1);
1965                 omapfb_put_mem_region(ofbi->region);
1966
1967                 if (r) {
1968                         dev_err(fbdev->dev, "failed to change mode\n");
1969                         return r;
1970                 }
1971         }
1972
1973         /* Enable fb0 */
1974         if (fbdev->num_fbs > 0) {
1975                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1976
1977                 if (ofbi->num_overlays > 0) {
1978                         struct omap_overlay *ovl = ofbi->overlays[0];
1979
1980                         ovl->manager->apply(ovl->manager);
1981
1982                         r = omapfb_overlay_enable(ovl, 1);
1983
1984                         if (r) {
1985                                 dev_err(fbdev->dev,
1986                                                 "failed to enable overlay\n");
1987                                 return r;
1988                         }
1989                 }
1990         }
1991
1992         DBG("create_framebuffers done\n");
1993
1994         return 0;
1995 }
1996
1997 static int omapfb_mode_to_timings(const char *mode_str,
1998                 struct omap_dss_device *display,
1999                 struct omap_video_timings *timings, u8 *bpp)
2000 {
2001         struct fb_info *fbi;
2002         struct fb_var_screeninfo *var;
2003         struct fb_ops *fbops;
2004         int r;
2005
2006 #ifdef CONFIG_OMAP2_DSS_VENC
2007         if (strcmp(mode_str, "pal") == 0) {
2008                 *timings = omap_dss_pal_timings;
2009                 *bpp = 24;
2010                 return 0;
2011         } else if (strcmp(mode_str, "ntsc") == 0) {
2012                 *timings = omap_dss_ntsc_timings;
2013                 *bpp = 24;
2014                 return 0;
2015         }
2016 #endif
2017
2018         /* this is quite a hack, but I wanted to use the modedb and for
2019          * that we need fb_info and var, so we create dummy ones */
2020
2021         *bpp = 0;
2022         fbi = NULL;
2023         var = NULL;
2024         fbops = NULL;
2025
2026         fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2027         if (fbi == NULL) {
2028                 r = -ENOMEM;
2029                 goto err;
2030         }
2031
2032         var = kzalloc(sizeof(*var), GFP_KERNEL);
2033         if (var == NULL) {
2034                 r = -ENOMEM;
2035                 goto err;
2036         }
2037
2038         fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2039         if (fbops == NULL) {
2040                 r = -ENOMEM;
2041                 goto err;
2042         }
2043
2044         fbi->fbops = fbops;
2045
2046         r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2047         if (r == 0) {
2048                 r = -EINVAL;
2049                 goto err;
2050         }
2051
2052         if (display->driver->get_timings) {
2053                 display->driver->get_timings(display, timings);
2054         } else {
2055                 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2056                 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2057                 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2058         }
2059
2060         timings->pixelclock = PICOS2KHZ(var->pixclock) * 1000;
2061         timings->hbp = var->left_margin;
2062         timings->hfp = var->right_margin;
2063         timings->vbp = var->upper_margin;
2064         timings->vfp = var->lower_margin;
2065         timings->hsw = var->hsync_len;
2066         timings->vsw = var->vsync_len;
2067         timings->x_res = var->xres;
2068         timings->y_res = var->yres;
2069         timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2070                                 OMAPDSS_SIG_ACTIVE_HIGH :
2071                                 OMAPDSS_SIG_ACTIVE_LOW;
2072         timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2073                                 OMAPDSS_SIG_ACTIVE_HIGH :
2074                                 OMAPDSS_SIG_ACTIVE_LOW;
2075         timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2076
2077         switch (var->bits_per_pixel) {
2078         case 16:
2079                 *bpp = 16;
2080                 break;
2081         case 24:
2082         case 32:
2083         default:
2084                 *bpp = 24;
2085                 break;
2086         }
2087
2088         r = 0;
2089
2090 err:
2091         kfree(fbi);
2092         kfree(var);
2093         kfree(fbops);
2094
2095         return r;
2096 }
2097
2098 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2099                 struct omap_dss_device *display, char *mode_str)
2100 {
2101         int r;
2102         u8 bpp;
2103         struct omap_video_timings timings, temp_timings;
2104         struct omapfb_display_data *d;
2105
2106         r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2107         if (r)
2108                 return r;
2109
2110         d = get_display_data(fbdev, display);
2111         d->bpp_override = bpp;
2112
2113         if (display->driver->check_timings) {
2114                 r = display->driver->check_timings(display, &timings);
2115                 if (r)
2116                         return r;
2117         } else {
2118                 /* If check_timings is not present compare xres and yres */
2119                 if (display->driver->get_timings) {
2120                         display->driver->get_timings(display, &temp_timings);
2121
2122                         if (temp_timings.x_res != timings.x_res ||
2123                                 temp_timings.y_res != timings.y_res)
2124                                 return -EINVAL;
2125                 }
2126         }
2127
2128         if (display->driver->set_timings)
2129                         display->driver->set_timings(display, &timings);
2130
2131         return 0;
2132 }
2133
2134 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2135                 struct omap_dss_device *dssdev)
2136 {
2137         struct omapfb_display_data *d;
2138
2139         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2140
2141         d = get_display_data(fbdev, dssdev);
2142
2143         if (d->bpp_override != 0)
2144                 return d->bpp_override;
2145
2146         return dssdev->driver->get_recommended_bpp(dssdev);
2147 }
2148
2149 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2150 {
2151         char *str, *options, *this_opt;
2152         int r = 0;
2153
2154         str = kstrdup(def_mode, GFP_KERNEL);
2155         if (!str)
2156                 return -ENOMEM;
2157         options = str;
2158
2159         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2160                 char *p, *display_str, *mode_str;
2161                 struct omap_dss_device *display;
2162                 int i;
2163
2164                 p = strchr(this_opt, ':');
2165                 if (!p) {
2166                         r = -EINVAL;
2167                         break;
2168                 }
2169
2170                 *p = 0;
2171                 display_str = this_opt;
2172                 mode_str = p + 1;
2173
2174                 display = NULL;
2175                 for (i = 0; i < fbdev->num_displays; ++i) {
2176                         if (strcmp(fbdev->displays[i].dssdev->name,
2177                                                 display_str) == 0) {
2178                                 display = fbdev->displays[i].dssdev;
2179                                 break;
2180                         }
2181                 }
2182
2183                 if (!display) {
2184                         r = -EINVAL;
2185                         break;
2186                 }
2187
2188                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2189                 if (r)
2190                         break;
2191         }
2192
2193         kfree(str);
2194
2195         return r;
2196 }
2197
2198 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2199                 struct omap_dss_device *display,
2200                 struct omap_video_timings *t)
2201 {
2202         if (display->driver->get_timings) {
2203                 display->driver->get_timings(display, t);
2204         } else {
2205                 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2206                 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2207                 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2208         }
2209
2210         t->x_res = m->xres;
2211         t->y_res = m->yres;
2212         t->pixelclock = PICOS2KHZ(m->pixclock) * 1000;
2213         t->hsw = m->hsync_len;
2214         t->hfp = m->right_margin;
2215         t->hbp = m->left_margin;
2216         t->vsw = m->vsync_len;
2217         t->vfp = m->lower_margin;
2218         t->vbp = m->upper_margin;
2219         t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2220                                 OMAPDSS_SIG_ACTIVE_HIGH :
2221                                 OMAPDSS_SIG_ACTIVE_LOW;
2222         t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2223                                 OMAPDSS_SIG_ACTIVE_HIGH :
2224                                 OMAPDSS_SIG_ACTIVE_LOW;
2225         t->interlace = m->vmode & FB_VMODE_INTERLACED;
2226 }
2227
2228 static int omapfb_find_best_mode(struct omap_dss_device *display,
2229                 struct omap_video_timings *timings)
2230 {
2231         struct fb_monspecs *specs;
2232         u8 *edid;
2233         int r, i, best_idx, len;
2234
2235         if (!display->driver->read_edid)
2236                 return -ENODEV;
2237
2238         len = 0x80 * 2;
2239         edid = kmalloc(len, GFP_KERNEL);
2240         if (edid == NULL)
2241                 return -ENOMEM;
2242
2243         r = display->driver->read_edid(display, edid, len);
2244         if (r < 0)
2245                 goto err1;
2246
2247         specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2248         if (specs == NULL) {
2249                 r = -ENOMEM;
2250                 goto err1;
2251         }
2252
2253         fb_edid_to_monspecs(edid, specs);
2254
2255         best_idx = -1;
2256
2257         for (i = 0; i < specs->modedb_len; ++i) {
2258                 struct fb_videomode *m;
2259                 struct omap_video_timings t;
2260
2261                 m = &specs->modedb[i];
2262
2263                 if (m->pixclock == 0)
2264                         continue;
2265
2266                 /* skip repeated pixel modes */
2267                 if (m->xres == 2880 || m->xres == 1440)
2268                         continue;
2269
2270                 if (m->vmode & FB_VMODE_INTERLACED ||
2271                                 m->vmode & FB_VMODE_DOUBLE)
2272                         continue;
2273
2274                 fb_videomode_to_omap_timings(m, display, &t);
2275
2276                 r = display->driver->check_timings(display, &t);
2277                 if (r == 0) {
2278                         best_idx = i;
2279                         break;
2280                 }
2281         }
2282
2283         if (best_idx == -1) {
2284                 r = -ENOENT;
2285                 goto err2;
2286         }
2287
2288         fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2289                 timings);
2290
2291         r = 0;
2292
2293 err2:
2294         fb_destroy_modedb(specs->modedb);
2295         kfree(specs);
2296 err1:
2297         kfree(edid);
2298
2299         return r;
2300 }
2301
2302 static int omapfb_init_display(struct omapfb2_device *fbdev,
2303                 struct omap_dss_device *dssdev)
2304 {
2305         struct omap_dss_driver *dssdrv = dssdev->driver;
2306         struct omapfb_display_data *d;
2307         int r;
2308
2309         r = dssdrv->enable(dssdev);
2310         if (r) {
2311                 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2312                                 dssdev->name);
2313                 return r;
2314         }
2315
2316         d = get_display_data(fbdev, dssdev);
2317
2318         d->fbdev = fbdev;
2319
2320         if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2321                 u16 w, h;
2322
2323                 if (auto_update) {
2324                         omapfb_start_auto_update(fbdev, dssdev);
2325                         d->update_mode = OMAPFB_AUTO_UPDATE;
2326                 } else {
2327                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2328                 }
2329
2330                 if (dssdrv->enable_te) {
2331                         r = dssdrv->enable_te(dssdev, 1);
2332                         if (r) {
2333                                 dev_err(fbdev->dev, "Failed to set TE\n");
2334                                 return r;
2335                         }
2336                 }
2337
2338                 dssdrv->get_resolution(dssdev, &w, &h);
2339                 r = dssdrv->update(dssdev, 0, 0, w, h);
2340                 if (r) {
2341                         dev_err(fbdev->dev,
2342                                         "Failed to update display\n");
2343                         return r;
2344                 }
2345         } else {
2346                 d->update_mode = OMAPFB_AUTO_UPDATE;
2347         }
2348
2349         return 0;
2350 }
2351
2352 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2353                 struct omap_dss_device *def_dssdev)
2354 {
2355         int i, r;
2356         struct omap_overlay_manager *mgr;
2357
2358         r = def_dssdev->driver->connect(def_dssdev);
2359         if (r) {
2360                 dev_err(fbdev->dev, "failed to connect default display\n");
2361                 return r;
2362         }
2363
2364         for (i = 0; i < fbdev->num_displays; ++i) {
2365                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2366
2367                 if (dssdev == def_dssdev)
2368                         continue;
2369
2370                 /*
2371                  * We don't care if the connect succeeds or not. We just want to
2372                  * connect as many displays as possible.
2373                  */
2374                 dssdev->driver->connect(dssdev);
2375         }
2376
2377         mgr = omapdss_find_mgr_from_display(def_dssdev);
2378
2379         if (!mgr) {
2380                 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2381                 return -EINVAL;
2382         }
2383
2384         for (i = 0; i < fbdev->num_overlays; i++) {
2385                 struct omap_overlay *ovl = fbdev->overlays[i];
2386
2387                 if (ovl->manager)
2388                         ovl->unset_manager(ovl);
2389
2390                 r = ovl->set_manager(ovl, mgr);
2391                 if (r)
2392                         dev_warn(fbdev->dev,
2393                                         "failed to connect overlay %s to manager %s\n",
2394                                         ovl->name, mgr->name);
2395         }
2396
2397         return 0;
2398 }
2399
2400 static struct omap_dss_device *
2401 omapfb_find_default_display(struct omapfb2_device *fbdev)
2402 {
2403         const char *def_name;
2404         int i;
2405
2406         /*
2407          * Search with the display name from the user or the board file,
2408          * comparing to display names and aliases
2409          */
2410
2411         def_name = omapdss_get_default_display_name();
2412
2413         if (def_name) {
2414                 for (i = 0; i < fbdev->num_displays; ++i) {
2415                         struct omap_dss_device *dssdev;
2416
2417                         dssdev = fbdev->displays[i].dssdev;
2418
2419                         if (dssdev->name && strcmp(def_name, dssdev->name) == 0)
2420                                 return dssdev;
2421
2422                         if (strcmp(def_name, dssdev->alias) == 0)
2423                                 return dssdev;
2424                 }
2425
2426                 /* def_name given but not found */
2427                 return NULL;
2428         }
2429
2430         /* then look for DT alias display0 */
2431         for (i = 0; i < fbdev->num_displays; ++i) {
2432                 struct omap_dss_device *dssdev;
2433                 int id;
2434
2435                 dssdev = fbdev->displays[i].dssdev;
2436
2437                 if (dssdev->dev->of_node == NULL)
2438                         continue;
2439
2440                 id = of_alias_get_id(dssdev->dev->of_node, "display");
2441                 if (id == 0)
2442                         return dssdev;
2443         }
2444
2445         /* return the first display we have in the list */
2446         return fbdev->displays[0].dssdev;
2447 }
2448
2449 static int omapfb_probe(struct platform_device *pdev)
2450 {
2451         struct omapfb2_device *fbdev = NULL;
2452         int r = 0;
2453         int i;
2454         struct omap_dss_device *def_display;
2455         struct omap_dss_device *dssdev;
2456
2457         DBG("omapfb_probe\n");
2458
2459         if (omapdss_is_initialized() == false)
2460                 return -EPROBE_DEFER;
2461
2462         if (pdev->num_resources != 0) {
2463                 dev_err(&pdev->dev, "probed for an unknown device\n");
2464                 r = -ENODEV;
2465                 goto err0;
2466         }
2467
2468         fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2469                         GFP_KERNEL);
2470         if (fbdev == NULL) {
2471                 r = -ENOMEM;
2472                 goto err0;
2473         }
2474
2475         if (def_vrfb && !omap_vrfb_supported()) {
2476                 def_vrfb = 0;
2477                 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2478                                 "ignoring the module parameter vrfb=y\n");
2479         }
2480
2481         r = omapdss_compat_init();
2482         if (r)
2483                 goto err0;
2484
2485         mutex_init(&fbdev->mtx);
2486
2487         fbdev->dev = &pdev->dev;
2488         platform_set_drvdata(pdev, fbdev);
2489
2490         fbdev->num_displays = 0;
2491         dssdev = NULL;
2492         for_each_dss_dev(dssdev) {
2493                 struct omapfb_display_data *d;
2494
2495                 omap_dss_get_device(dssdev);
2496
2497                 if (!dssdev->driver) {
2498                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2499                                 dssdev->name);
2500                         omap_dss_put_device(dssdev);
2501                         continue;
2502                 }
2503
2504                 d = &fbdev->displays[fbdev->num_displays++];
2505                 d->dssdev = dssdev;
2506                 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2507                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2508                 else
2509                         d->update_mode = OMAPFB_AUTO_UPDATE;
2510         }
2511
2512         if (fbdev->num_displays == 0) {
2513                 dev_err(&pdev->dev, "no displays\n");
2514                 r = -EPROBE_DEFER;
2515                 goto cleanup;
2516         }
2517
2518         fbdev->num_overlays = omap_dss_get_num_overlays();
2519         for (i = 0; i < fbdev->num_overlays; i++)
2520                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2521
2522         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2523         for (i = 0; i < fbdev->num_managers; i++)
2524                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2525
2526         def_display = omapfb_find_default_display(fbdev);
2527         if (def_display == NULL) {
2528                 dev_err(fbdev->dev, "failed to find default display\n");
2529                 r = -EPROBE_DEFER;
2530                 goto cleanup;
2531         }
2532
2533         r = omapfb_init_connections(fbdev, def_display);
2534         if (r) {
2535                 dev_err(fbdev->dev, "failed to init overlay connections\n");
2536                 goto cleanup;
2537         }
2538
2539         if (def_mode && strlen(def_mode) > 0) {
2540                 if (omapfb_parse_def_modes(fbdev))
2541                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2542         } else if (def_display && def_display->driver->set_timings &&
2543                         def_display->driver->check_timings) {
2544                 struct omap_video_timings t;
2545
2546                 r = omapfb_find_best_mode(def_display, &t);
2547
2548                 if (r == 0)
2549                         def_display->driver->set_timings(def_display, &t);
2550         }
2551
2552         r = omapfb_create_framebuffers(fbdev);
2553         if (r)
2554                 goto cleanup;
2555
2556         for (i = 0; i < fbdev->num_managers; i++) {
2557                 struct omap_overlay_manager *mgr;
2558                 mgr = fbdev->managers[i];
2559                 r = mgr->apply(mgr);
2560                 if (r)
2561                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2562         }
2563
2564         DBG("mgr->apply'ed\n");
2565
2566         if (def_display) {
2567                 r = omapfb_init_display(fbdev, def_display);
2568                 if (r) {
2569                         dev_err(fbdev->dev,
2570                                         "failed to initialize default "
2571                                         "display\n");
2572                         goto cleanup;
2573                 }
2574         }
2575
2576         DBG("create sysfs for fbs\n");
2577         r = omapfb_create_sysfs(fbdev);
2578         if (r) {
2579                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2580                 goto cleanup;
2581         }
2582
2583         if (def_display) {
2584                 u16 w, h;
2585
2586                 def_display->driver->get_resolution(def_display, &w, &h);
2587
2588                 dev_info(fbdev->dev, "using display '%s' mode %dx%d\n",
2589                         def_display->name, w, h);
2590         }
2591
2592         return 0;
2593
2594 cleanup:
2595         omapfb_free_resources(fbdev);
2596         omapdss_compat_uninit();
2597 err0:
2598         dev_err(&pdev->dev, "failed to setup omapfb\n");
2599         return r;
2600 }
2601
2602 static int omapfb_remove(struct platform_device *pdev)
2603 {
2604         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2605
2606         /* FIXME: wait till completion of pending events */
2607
2608         omapfb_remove_sysfs(fbdev);
2609
2610         omapfb_free_resources(fbdev);
2611
2612         omapdss_compat_uninit();
2613
2614         return 0;
2615 }
2616
2617 static struct platform_driver omapfb_driver = {
2618         .probe          = omapfb_probe,
2619         .remove         = omapfb_remove,
2620         .driver         = {
2621                 .name   = "omapfb",
2622         },
2623 };
2624
2625 module_param_named(mode, def_mode, charp, 0);
2626 module_param_named(vram, def_vram, charp, 0);
2627 module_param_named(rotate, def_rotate, int, 0);
2628 module_param_named(vrfb, def_vrfb, bool, 0);
2629 module_param_named(mirror, def_mirror, bool, 0);
2630
2631 module_platform_driver(omapfb_driver);
2632
2633 MODULE_ALIAS("platform:omapfb");
2634 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2635 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2636 MODULE_LICENSE("GPL v2");