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                 /* fall through */
 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                 /* Fallthrough */
1158                 r = -EINVAL;
1159                 break;
1160         case OMAPFB_COLOR_RGB565:
1161         case OMAPFB_COLOR_RGB444:
1162         case OMAPFB_COLOR_RGB24P:
1163         case OMAPFB_COLOR_RGB24U:
1164                 if (r != 0)
1165                         break;
1166
1167                 if (regno < 16) {
1168                         u32 pal;
1169                         pal = ((red >> (16 - var->red.length)) <<
1170                                         var->red.offset) |
1171                                 ((green >> (16 - var->green.length)) <<
1172                                  var->green.offset) |
1173                                 (blue >> (16 - var->blue.length));
1174                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1175                 }
1176                 break;
1177         default:
1178                 BUG();
1179         }
1180         return r;
1181 }
1182
1183 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1184                 u_int transp, struct fb_info *info)
1185 {
1186         DBG("setcolreg\n");
1187
1188         return _setcolreg(info, regno, red, green, blue, transp, 1);
1189 }
1190
1191 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1192 {
1193         int count, index, r;
1194         u16 *red, *green, *blue, *transp;
1195         u16 trans = 0xffff;
1196
1197         DBG("setcmap\n");
1198
1199         red     = cmap->red;
1200         green   = cmap->green;
1201         blue    = cmap->blue;
1202         transp  = cmap->transp;
1203         index   = cmap->start;
1204
1205         for (count = 0; count < cmap->len; count++) {
1206                 if (transp)
1207                         trans = *transp++;
1208                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1209                                 count == cmap->len - 1);
1210                 if (r != 0)
1211                         return r;
1212         }
1213
1214         return 0;
1215 }
1216
1217 static int omapfb_blank(int blank, struct fb_info *fbi)
1218 {
1219         struct omapfb_info *ofbi = FB2OFB(fbi);
1220         struct omapfb2_device *fbdev = ofbi->fbdev;
1221         struct omap_dss_device *display = fb2display(fbi);
1222         struct omapfb_display_data *d;
1223         int r = 0;
1224
1225         if (!display)
1226                 return -EINVAL;
1227
1228         omapfb_lock(fbdev);
1229
1230         d = get_display_data(fbdev, display);
1231
1232         switch (blank) {
1233         case FB_BLANK_UNBLANK:
1234                 if (display->state == OMAP_DSS_DISPLAY_ACTIVE)
1235                         goto exit;
1236
1237                 r = display->driver->enable(display);
1238
1239                 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) &&
1240                                 d->update_mode == OMAPFB_AUTO_UPDATE &&
1241                                 !d->auto_update_work_enabled)
1242                         omapfb_start_auto_update(fbdev, display);
1243
1244                 break;
1245
1246         case FB_BLANK_NORMAL:
1247                 /* FB_BLANK_NORMAL could be implemented.
1248                  * Needs DSS additions. */
1249         case FB_BLANK_VSYNC_SUSPEND:
1250         case FB_BLANK_HSYNC_SUSPEND:
1251         case FB_BLANK_POWERDOWN:
1252                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1253                         goto exit;
1254
1255                 if (d->auto_update_work_enabled)
1256                         omapfb_stop_auto_update(fbdev, display);
1257
1258                 display->driver->disable(display);
1259
1260                 break;
1261
1262         default:
1263                 r = -EINVAL;
1264         }
1265
1266 exit:
1267         omapfb_unlock(fbdev);
1268
1269         return r;
1270 }
1271
1272 #if 0
1273 /* XXX fb_read and fb_write are needed for VRFB */
1274 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1275                 size_t count, loff_t *ppos)
1276 {
1277         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1278         /* XXX needed for VRFB */
1279         return count;
1280 }
1281 #endif
1282
1283 static struct fb_ops omapfb_ops = {
1284         .owner          = THIS_MODULE,
1285         .fb_open        = omapfb_open,
1286         .fb_release     = omapfb_release,
1287         .fb_fillrect    = cfb_fillrect,
1288         .fb_copyarea    = cfb_copyarea,
1289         .fb_imageblit   = cfb_imageblit,
1290         .fb_blank       = omapfb_blank,
1291         .fb_ioctl       = omapfb_ioctl,
1292         .fb_check_var   = omapfb_check_var,
1293         .fb_set_par     = omapfb_set_par,
1294         .fb_pan_display = omapfb_pan_display,
1295         .fb_mmap        = omapfb_mmap,
1296         .fb_setcolreg   = omapfb_setcolreg,
1297         .fb_setcmap     = omapfb_setcmap,
1298         /*.fb_write     = omapfb_write,*/
1299 };
1300
1301 static void omapfb_free_fbmem(struct fb_info *fbi)
1302 {
1303         struct omapfb_info *ofbi = FB2OFB(fbi);
1304         struct omapfb2_device *fbdev = ofbi->fbdev;
1305         struct omapfb2_mem_region *rg;
1306
1307         rg = ofbi->region;
1308
1309         if (rg->token == NULL)
1310                 return;
1311
1312         WARN_ON(atomic_read(&rg->map_count));
1313
1314         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1315                 /* unmap the 0 angle rotation */
1316                 if (rg->vrfb.vaddr[0]) {
1317                         iounmap(rg->vrfb.vaddr[0]);
1318                         rg->vrfb.vaddr[0] = NULL;
1319                 }
1320
1321                 omap_vrfb_release_ctx(&rg->vrfb);
1322         }
1323
1324         dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
1325                         rg->attrs);
1326
1327         rg->token = NULL;
1328         rg->vaddr = NULL;
1329         rg->paddr = 0;
1330         rg->alloc = 0;
1331         rg->size = 0;
1332 }
1333
1334 static void clear_fb_info(struct fb_info *fbi)
1335 {
1336         memset(&fbi->var, 0, sizeof(fbi->var));
1337         memset(&fbi->fix, 0, sizeof(fbi->fix));
1338         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1339 }
1340
1341 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1342 {
1343         int i;
1344
1345         DBG("free all fbmem\n");
1346
1347         for (i = 0; i < fbdev->num_fbs; i++) {
1348                 struct fb_info *fbi = fbdev->fbs[i];
1349                 omapfb_free_fbmem(fbi);
1350                 clear_fb_info(fbi);
1351         }
1352
1353         return 0;
1354 }
1355
1356 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1357                 unsigned long paddr)
1358 {
1359         struct omapfb_info *ofbi = FB2OFB(fbi);
1360         struct omapfb2_device *fbdev = ofbi->fbdev;
1361         struct omapfb2_mem_region *rg;
1362         void *token;
1363         unsigned long attrs;
1364         dma_addr_t dma_handle;
1365         int r;
1366
1367         rg = ofbi->region;
1368
1369         rg->paddr = 0;
1370         rg->vaddr = NULL;
1371         memset(&rg->vrfb, 0, sizeof rg->vrfb);
1372         rg->size = 0;
1373         rg->type = 0;
1374         rg->alloc = false;
1375         rg->map = false;
1376
1377         size = PAGE_ALIGN(size);
1378
1379         attrs = DMA_ATTR_WRITE_COMBINE;
1380
1381         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
1382                 attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
1383
1384         DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1385
1386         token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
1387                         GFP_KERNEL, attrs);
1388
1389         if (token == NULL) {
1390                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1391                 return -ENOMEM;
1392         }
1393
1394         DBG("allocated VRAM paddr %lx, vaddr %p\n",
1395                         (unsigned long)dma_handle, token);
1396
1397         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1398                 r = omap_vrfb_request_ctx(&rg->vrfb);
1399                 if (r) {
1400                         dma_free_attrs(fbdev->dev, size, token, dma_handle,
1401                                         attrs);
1402                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1403                         return r;
1404                 }
1405         }
1406
1407         rg->attrs = attrs;
1408         rg->token = token;
1409         rg->dma_handle = dma_handle;
1410
1411         rg->paddr = (unsigned long)dma_handle;
1412         rg->vaddr = (void __iomem *)token;
1413         rg->size = size;
1414         rg->alloc = 1;
1415
1416         return 0;
1417 }
1418
1419 /* allocate fbmem using display resolution as reference */
1420 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1421                 unsigned long paddr)
1422 {
1423         struct omapfb_info *ofbi = FB2OFB(fbi);
1424         struct omapfb2_device *fbdev = ofbi->fbdev;
1425         struct omap_dss_device *display;
1426         int bytespp;
1427
1428         display =  fb2display(fbi);
1429
1430         if (!display)
1431                 return 0;
1432
1433         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1434         case 16:
1435                 bytespp = 2;
1436                 break;
1437         case 24:
1438                 bytespp = 4;
1439                 break;
1440         default:
1441                 bytespp = 4;
1442                 break;
1443         }
1444
1445         if (!size) {
1446                 u16 w, h;
1447
1448                 display->driver->get_resolution(display, &w, &h);
1449
1450                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1451                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1452                                         omap_vrfb_min_phys_size(h, w, bytespp));
1453
1454                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1455                                         w * h * bytespp, size);
1456                 } else {
1457                         size = w * h * bytespp;
1458                 }
1459         }
1460
1461         if (!size)
1462                 return 0;
1463
1464         return omapfb_alloc_fbmem(fbi, size, paddr);
1465 }
1466
1467 static int omapfb_parse_vram_param(const char *param, int max_entries,
1468                 unsigned long *sizes, unsigned long *paddrs)
1469 {
1470         unsigned int fbnum;
1471         unsigned long size;
1472         unsigned long paddr = 0;
1473         char *p, *start;
1474
1475         start = (char *)param;
1476
1477         while (1) {
1478                 p = start;
1479
1480                 fbnum = simple_strtoul(p, &p, 10);
1481
1482                 if (p == start)
1483                         return -EINVAL;
1484
1485                 if (*p != ':')
1486                         return -EINVAL;
1487
1488                 if (fbnum >= max_entries)
1489                         return -EINVAL;
1490
1491                 size = memparse(p + 1, &p);
1492
1493                 if (!size)
1494                         return -EINVAL;
1495
1496                 paddr = 0;
1497
1498                 if (*p == '@') {
1499                         paddr = simple_strtoul(p + 1, &p, 16);
1500
1501                         if (!paddr)
1502                                 return -EINVAL;
1503
1504                 }
1505
1506                 WARN_ONCE(paddr,
1507                         "reserving memory at predefined address not supported\n");
1508
1509                 paddrs[fbnum] = paddr;
1510                 sizes[fbnum] = size;
1511
1512                 if (*p == 0)
1513                         break;
1514
1515                 if (*p != ',')
1516                         return -EINVAL;
1517
1518                 ++p;
1519
1520                 start = p;
1521         }
1522
1523         return 0;
1524 }
1525
1526 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1527 {
1528         int i, r;
1529         unsigned long vram_sizes[10];
1530         unsigned long vram_paddrs[10];
1531
1532         memset(&vram_sizes, 0, sizeof(vram_sizes));
1533         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1534
1535         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1536                                 vram_sizes, vram_paddrs)) {
1537                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1538
1539                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1540                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1541         }
1542
1543         for (i = 0; i < fbdev->num_fbs; i++) {
1544                 /* allocate memory automatically only for fb0, or if
1545                  * excplicitly defined with vram or plat data option */
1546                 if (i == 0 || vram_sizes[i] != 0) {
1547                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1548                                         vram_sizes[i], vram_paddrs[i]);
1549
1550                         if (r)
1551                                 return r;
1552                 }
1553         }
1554
1555         for (i = 0; i < fbdev->num_fbs; i++) {
1556                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1557                 struct omapfb2_mem_region *rg;
1558                 rg = ofbi->region;
1559
1560                 DBG("region%d phys %08x virt %p size=%lu\n",
1561                                 i,
1562                                 rg->paddr,
1563                                 rg->vaddr,
1564                                 rg->size);
1565         }
1566
1567         return 0;
1568 }
1569
1570 static void omapfb_clear_fb(struct fb_info *fbi)
1571 {
1572         const struct fb_fillrect rect = {
1573                 .dx = 0,
1574                 .dy = 0,
1575                 .width = fbi->var.xres_virtual,
1576                 .height = fbi->var.yres_virtual,
1577                 .color = 0,
1578                 .rop = ROP_COPY,
1579         };
1580
1581         cfb_fillrect(fbi, &rect);
1582 }
1583
1584 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1585 {
1586         struct omapfb_info *ofbi = FB2OFB(fbi);
1587         struct omapfb2_device *fbdev = ofbi->fbdev;
1588         struct omapfb2_mem_region *rg = ofbi->region;
1589         unsigned long old_size = rg->size;
1590         unsigned long old_paddr = rg->paddr;
1591         int old_type = rg->type;
1592         int r;
1593
1594         if (type != OMAPFB_MEMTYPE_SDRAM)
1595                 return -EINVAL;
1596
1597         size = PAGE_ALIGN(size);
1598
1599         if (old_size == size && old_type == type)
1600                 return 0;
1601
1602         omapfb_free_fbmem(fbi);
1603
1604         if (size == 0) {
1605                 clear_fb_info(fbi);
1606                 return 0;
1607         }
1608
1609         r = omapfb_alloc_fbmem(fbi, size, 0);
1610
1611         if (r) {
1612                 if (old_size)
1613                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1614
1615                 if (rg->size == 0)
1616                         clear_fb_info(fbi);
1617
1618                 return r;
1619         }
1620
1621         if (old_size == size)
1622                 return 0;
1623
1624         if (old_size == 0) {
1625                 DBG("initializing fb %d\n", ofbi->id);
1626                 r = omapfb_fb_init(fbdev, fbi);
1627                 if (r) {
1628                         DBG("omapfb_fb_init failed\n");
1629                         goto err;
1630                 }
1631                 r = omapfb_apply_changes(fbi, 1);
1632                 if (r) {
1633                         DBG("omapfb_apply_changes failed\n");
1634                         goto err;
1635                 }
1636         } else {
1637                 struct fb_var_screeninfo new_var;
1638                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1639                 r = check_fb_var(fbi, &new_var);
1640                 if (r)
1641                         goto err;
1642                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1643                 set_fb_fix(fbi);
1644                 r = setup_vrfb_rotation(fbi);
1645                 if (r)
1646                         goto err;
1647         }
1648
1649         omapfb_clear_fb(fbi);
1650
1651         return 0;
1652 err:
1653         omapfb_free_fbmem(fbi);
1654         clear_fb_info(fbi);
1655         return r;
1656 }
1657
1658 static void omapfb_auto_update_work(struct work_struct *work)
1659 {
1660         struct omap_dss_device *dssdev;
1661         struct omap_dss_driver *dssdrv;
1662         struct omapfb_display_data *d;
1663         u16 w, h;
1664         unsigned int freq;
1665         struct omapfb2_device *fbdev;
1666
1667         d = container_of(work, struct omapfb_display_data,
1668                         auto_update_work.work);
1669
1670         dssdev = d->dssdev;
1671         dssdrv = dssdev->driver;
1672         fbdev = d->fbdev;
1673
1674         if (!dssdrv || !dssdrv->update)
1675                 return;
1676
1677         if (dssdrv->sync)
1678                 dssdrv->sync(dssdev);
1679
1680         dssdrv->get_resolution(dssdev, &w, &h);
1681         dssdrv->update(dssdev, 0, 0, w, h);
1682
1683         freq = auto_update_freq;
1684         if (freq == 0)
1685                 freq = 20;
1686         queue_delayed_work(fbdev->auto_update_wq,
1687                         &d->auto_update_work, HZ / freq);
1688 }
1689
1690 void omapfb_start_auto_update(struct omapfb2_device *fbdev,
1691                 struct omap_dss_device *display)
1692 {
1693         struct omapfb_display_data *d;
1694
1695         if (fbdev->auto_update_wq == NULL) {
1696                 struct workqueue_struct *wq;
1697
1698                 wq = create_singlethread_workqueue("omapfb_auto_update");
1699
1700                 if (wq == NULL) {
1701                         dev_err(fbdev->dev, "Failed to create workqueue for "
1702                                         "auto-update\n");
1703                         return;
1704                 }
1705
1706                 fbdev->auto_update_wq = wq;
1707         }
1708
1709         d = get_display_data(fbdev, display);
1710
1711         INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work);
1712
1713         d->auto_update_work_enabled = true;
1714
1715         omapfb_auto_update_work(&d->auto_update_work.work);
1716 }
1717
1718 void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
1719                 struct omap_dss_device *display)
1720 {
1721         struct omapfb_display_data *d;
1722
1723         d = get_display_data(fbdev, display);
1724
1725         cancel_delayed_work_sync(&d->auto_update_work);
1726
1727         d->auto_update_work_enabled = false;
1728 }
1729
1730 /* initialize fb_info, var, fix to something sane based on the display */
1731 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1732 {
1733         struct fb_var_screeninfo *var = &fbi->var;
1734         struct omap_dss_device *display = fb2display(fbi);
1735         struct omapfb_info *ofbi = FB2OFB(fbi);
1736         int r = 0;
1737
1738         fbi->fbops = &omapfb_ops;
1739         fbi->flags = FBINFO_FLAG_DEFAULT;
1740         fbi->pseudo_palette = fbdev->pseudo_palette;
1741
1742         if (ofbi->region->size == 0) {
1743                 clear_fb_info(fbi);
1744                 return 0;
1745         }
1746
1747         var->nonstd = 0;
1748         var->bits_per_pixel = 0;
1749
1750         var->rotate = def_rotate;
1751
1752         if (display) {
1753                 u16 w, h;
1754                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1755
1756                 display->driver->get_resolution(display, &w, &h);
1757
1758                 if (rotation == FB_ROTATE_CW ||
1759                                 rotation == FB_ROTATE_CCW) {
1760                         var->xres = h;
1761                         var->yres = w;
1762                 } else {
1763                         var->xres = w;
1764                         var->yres = h;
1765                 }
1766
1767                 var->xres_virtual = var->xres;
1768                 var->yres_virtual = var->yres;
1769
1770                 if (!var->bits_per_pixel) {
1771                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1772                         case 16:
1773                                 var->bits_per_pixel = 16;
1774                                 break;
1775                         case 24:
1776                                 var->bits_per_pixel = 32;
1777                                 break;
1778                         default:
1779                                 dev_err(fbdev->dev, "illegal display "
1780                                                 "bpp\n");
1781                                 return -EINVAL;
1782                         }
1783                 }
1784         } else {
1785                 /* if there's no display, let's just guess some basic values */
1786                 var->xres = 320;
1787                 var->yres = 240;
1788                 var->xres_virtual = var->xres;
1789                 var->yres_virtual = var->yres;
1790                 if (!var->bits_per_pixel)
1791                         var->bits_per_pixel = 16;
1792         }
1793
1794         r = check_fb_var(fbi, var);
1795         if (r)
1796                 goto err;
1797
1798         set_fb_fix(fbi);
1799         r = setup_vrfb_rotation(fbi);
1800         if (r)
1801                 goto err;
1802
1803         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1804         if (r)
1805                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1806
1807 err:
1808         return r;
1809 }
1810
1811 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1812 {
1813         fb_dealloc_cmap(&fbi->cmap);
1814 }
1815
1816
1817 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1818 {
1819         int i;
1820
1821         DBG("free_resources\n");
1822
1823         if (fbdev == NULL)
1824                 return;
1825
1826         for (i = 0; i < fbdev->num_overlays; i++) {
1827                 struct omap_overlay *ovl = fbdev->overlays[i];
1828
1829                 ovl->disable(ovl);
1830
1831                 if (ovl->manager)
1832                         ovl->unset_manager(ovl);
1833         }
1834
1835         for (i = 0; i < fbdev->num_fbs; i++)
1836                 unregister_framebuffer(fbdev->fbs[i]);
1837
1838         /* free the reserved fbmem */
1839         omapfb_free_all_fbmem(fbdev);
1840
1841         for (i = 0; i < fbdev->num_fbs; i++) {
1842                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1843                 framebuffer_release(fbdev->fbs[i]);
1844         }
1845
1846         for (i = 0; i < fbdev->num_displays; i++) {
1847                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
1848
1849                 if (fbdev->displays[i].auto_update_work_enabled)
1850                         omapfb_stop_auto_update(fbdev, dssdev);
1851
1852                 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
1853                         dssdev->driver->disable(dssdev);
1854
1855                 dssdev->driver->disconnect(dssdev);
1856
1857                 omap_dss_put_device(dssdev);
1858         }
1859
1860         if (fbdev->auto_update_wq != NULL) {
1861                 flush_workqueue(fbdev->auto_update_wq);
1862                 destroy_workqueue(fbdev->auto_update_wq);
1863                 fbdev->auto_update_wq = NULL;
1864         }
1865
1866         dev_set_drvdata(fbdev->dev, NULL);
1867 }
1868
1869 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1870 {
1871         int r, i;
1872
1873         fbdev->num_fbs = 0;
1874
1875         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1876
1877         /* allocate fb_infos */
1878         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1879                 struct fb_info *fbi;
1880                 struct omapfb_info *ofbi;
1881
1882                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1883                                 fbdev->dev);
1884                 if (!fbi)
1885                         return -ENOMEM;
1886
1887                 clear_fb_info(fbi);
1888
1889                 fbdev->fbs[i] = fbi;
1890
1891                 ofbi = FB2OFB(fbi);
1892                 ofbi->fbdev = fbdev;
1893                 ofbi->id = i;
1894
1895                 ofbi->region = &fbdev->regions[i];
1896                 ofbi->region->id = i;
1897                 init_rwsem(&ofbi->region->lock);
1898
1899                 /* assign these early, so that fb alloc can use them */
1900                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1901                         OMAP_DSS_ROT_DMA;
1902                 ofbi->mirror = def_mirror;
1903
1904                 fbdev->num_fbs++;
1905         }
1906
1907         DBG("fb_infos allocated\n");
1908
1909         /* assign overlays for the fbs */
1910         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1911                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1912
1913                 ofbi->overlays[0] = fbdev->overlays[i];
1914                 ofbi->num_overlays = 1;
1915         }
1916
1917         /* allocate fb memories */
1918         r = omapfb_allocate_all_fbs(fbdev);
1919         if (r) {
1920                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1921                 return r;
1922         }
1923
1924         DBG("fbmems allocated\n");
1925
1926         /* setup fb_infos */
1927         for (i = 0; i < fbdev->num_fbs; i++) {
1928                 struct fb_info *fbi = fbdev->fbs[i];
1929                 struct omapfb_info *ofbi = FB2OFB(fbi);
1930
1931                 omapfb_get_mem_region(ofbi->region);
1932                 r = omapfb_fb_init(fbdev, fbi);
1933                 omapfb_put_mem_region(ofbi->region);
1934
1935                 if (r) {
1936                         dev_err(fbdev->dev, "failed to setup fb_info\n");
1937                         return r;
1938                 }
1939         }
1940
1941         for (i = 0; i < fbdev->num_fbs; i++) {
1942                 struct fb_info *fbi = fbdev->fbs[i];
1943                 struct omapfb_info *ofbi = FB2OFB(fbi);
1944
1945                 if (ofbi->region->size == 0)
1946                         continue;
1947
1948                 omapfb_clear_fb(fbi);
1949         }
1950
1951         DBG("fb_infos initialized\n");
1952
1953         for (i = 0; i < fbdev->num_fbs; i++) {
1954                 r = register_framebuffer(fbdev->fbs[i]);
1955                 if (r != 0) {
1956                         dev_err(fbdev->dev,
1957                                 "registering framebuffer %d failed\n", i);
1958                         return r;
1959                 }
1960         }
1961
1962         DBG("framebuffers registered\n");
1963
1964         for (i = 0; i < fbdev->num_fbs; i++) {
1965                 struct fb_info *fbi = fbdev->fbs[i];
1966                 struct omapfb_info *ofbi = FB2OFB(fbi);
1967
1968                 omapfb_get_mem_region(ofbi->region);
1969                 r = omapfb_apply_changes(fbi, 1);
1970                 omapfb_put_mem_region(ofbi->region);
1971
1972                 if (r) {
1973                         dev_err(fbdev->dev, "failed to change mode\n");
1974                         return r;
1975                 }
1976         }
1977
1978         /* Enable fb0 */
1979         if (fbdev->num_fbs > 0) {
1980                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1981
1982                 if (ofbi->num_overlays > 0) {
1983                         struct omap_overlay *ovl = ofbi->overlays[0];
1984
1985                         ovl->manager->apply(ovl->manager);
1986
1987                         r = omapfb_overlay_enable(ovl, 1);
1988
1989                         if (r) {
1990                                 dev_err(fbdev->dev,
1991                                                 "failed to enable overlay\n");
1992                                 return r;
1993                         }
1994                 }
1995         }
1996
1997         DBG("create_framebuffers done\n");
1998
1999         return 0;
2000 }
2001
2002 static int omapfb_mode_to_timings(const char *mode_str,
2003                 struct omap_dss_device *display,
2004                 struct omap_video_timings *timings, u8 *bpp)
2005 {
2006         struct fb_info *fbi;
2007         struct fb_var_screeninfo *var;
2008         struct fb_ops *fbops;
2009         int r;
2010
2011 #ifdef CONFIG_OMAP2_DSS_VENC
2012         if (strcmp(mode_str, "pal") == 0) {
2013                 *timings = omap_dss_pal_timings;
2014                 *bpp = 24;
2015                 return 0;
2016         } else if (strcmp(mode_str, "ntsc") == 0) {
2017                 *timings = omap_dss_ntsc_timings;
2018                 *bpp = 24;
2019                 return 0;
2020         }
2021 #endif
2022
2023         /* this is quite a hack, but I wanted to use the modedb and for
2024          * that we need fb_info and var, so we create dummy ones */
2025
2026         *bpp = 0;
2027         fbi = NULL;
2028         var = NULL;
2029         fbops = NULL;
2030
2031         fbi = kzalloc(sizeof(*fbi), GFP_KERNEL);
2032         if (fbi == NULL) {
2033                 r = -ENOMEM;
2034                 goto err;
2035         }
2036
2037         var = kzalloc(sizeof(*var), GFP_KERNEL);
2038         if (var == NULL) {
2039                 r = -ENOMEM;
2040                 goto err;
2041         }
2042
2043         fbops = kzalloc(sizeof(*fbops), GFP_KERNEL);
2044         if (fbops == NULL) {
2045                 r = -ENOMEM;
2046                 goto err;
2047         }
2048
2049         fbi->fbops = fbops;
2050
2051         r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24);
2052         if (r == 0) {
2053                 r = -EINVAL;
2054                 goto err;
2055         }
2056
2057         if (display->driver->get_timings) {
2058                 display->driver->get_timings(display, timings);
2059         } else {
2060                 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2061                 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2062                 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2063         }
2064
2065         timings->pixelclock = PICOS2KHZ(var->pixclock) * 1000;
2066         timings->hbp = var->left_margin;
2067         timings->hfp = var->right_margin;
2068         timings->vbp = var->upper_margin;
2069         timings->vfp = var->lower_margin;
2070         timings->hsw = var->hsync_len;
2071         timings->vsw = var->vsync_len;
2072         timings->x_res = var->xres;
2073         timings->y_res = var->yres;
2074         timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ?
2075                                 OMAPDSS_SIG_ACTIVE_HIGH :
2076                                 OMAPDSS_SIG_ACTIVE_LOW;
2077         timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ?
2078                                 OMAPDSS_SIG_ACTIVE_HIGH :
2079                                 OMAPDSS_SIG_ACTIVE_LOW;
2080         timings->interlace = var->vmode & FB_VMODE_INTERLACED;
2081
2082         switch (var->bits_per_pixel) {
2083         case 16:
2084                 *bpp = 16;
2085                 break;
2086         case 24:
2087         case 32:
2088         default:
2089                 *bpp = 24;
2090                 break;
2091         }
2092
2093         r = 0;
2094
2095 err:
2096         kfree(fbi);
2097         kfree(var);
2098         kfree(fbops);
2099
2100         return r;
2101 }
2102
2103 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2104                 struct omap_dss_device *display, char *mode_str)
2105 {
2106         int r;
2107         u8 bpp;
2108         struct omap_video_timings timings, temp_timings;
2109         struct omapfb_display_data *d;
2110
2111         r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp);
2112         if (r)
2113                 return r;
2114
2115         d = get_display_data(fbdev, display);
2116         d->bpp_override = bpp;
2117
2118         if (display->driver->check_timings) {
2119                 r = display->driver->check_timings(display, &timings);
2120                 if (r)
2121                         return r;
2122         } else {
2123                 /* If check_timings is not present compare xres and yres */
2124                 if (display->driver->get_timings) {
2125                         display->driver->get_timings(display, &temp_timings);
2126
2127                         if (temp_timings.x_res != timings.x_res ||
2128                                 temp_timings.y_res != timings.y_res)
2129                                 return -EINVAL;
2130                 }
2131         }
2132
2133         if (display->driver->set_timings)
2134                         display->driver->set_timings(display, &timings);
2135
2136         return 0;
2137 }
2138
2139 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2140                 struct omap_dss_device *dssdev)
2141 {
2142         struct omapfb_display_data *d;
2143
2144         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2145
2146         d = get_display_data(fbdev, dssdev);
2147
2148         if (d->bpp_override != 0)
2149                 return d->bpp_override;
2150
2151         return dssdev->driver->get_recommended_bpp(dssdev);
2152 }
2153
2154 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2155 {
2156         char *str, *options, *this_opt;
2157         int r = 0;
2158
2159         str = kstrdup(def_mode, GFP_KERNEL);
2160         if (!str)
2161                 return -ENOMEM;
2162         options = str;
2163
2164         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2165                 char *p, *display_str, *mode_str;
2166                 struct omap_dss_device *display;
2167                 int i;
2168
2169                 p = strchr(this_opt, ':');
2170                 if (!p) {
2171                         r = -EINVAL;
2172                         break;
2173                 }
2174
2175                 *p = 0;
2176                 display_str = this_opt;
2177                 mode_str = p + 1;
2178
2179                 display = NULL;
2180                 for (i = 0; i < fbdev->num_displays; ++i) {
2181                         if (strcmp(fbdev->displays[i].dssdev->name,
2182                                                 display_str) == 0) {
2183                                 display = fbdev->displays[i].dssdev;
2184                                 break;
2185                         }
2186                 }
2187
2188                 if (!display) {
2189                         r = -EINVAL;
2190                         break;
2191                 }
2192
2193                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2194                 if (r)
2195                         break;
2196         }
2197
2198         kfree(str);
2199
2200         return r;
2201 }
2202
2203 static void fb_videomode_to_omap_timings(struct fb_videomode *m,
2204                 struct omap_dss_device *display,
2205                 struct omap_video_timings *t)
2206 {
2207         if (display->driver->get_timings) {
2208                 display->driver->get_timings(display, t);
2209         } else {
2210                 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
2211                 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH;
2212                 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
2213         }
2214
2215         t->x_res = m->xres;
2216         t->y_res = m->yres;
2217         t->pixelclock = PICOS2KHZ(m->pixclock) * 1000;
2218         t->hsw = m->hsync_len;
2219         t->hfp = m->right_margin;
2220         t->hbp = m->left_margin;
2221         t->vsw = m->vsync_len;
2222         t->vfp = m->lower_margin;
2223         t->vbp = m->upper_margin;
2224         t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ?
2225                                 OMAPDSS_SIG_ACTIVE_HIGH :
2226                                 OMAPDSS_SIG_ACTIVE_LOW;
2227         t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ?
2228                                 OMAPDSS_SIG_ACTIVE_HIGH :
2229                                 OMAPDSS_SIG_ACTIVE_LOW;
2230         t->interlace = m->vmode & FB_VMODE_INTERLACED;
2231 }
2232
2233 static int omapfb_find_best_mode(struct omap_dss_device *display,
2234                 struct omap_video_timings *timings)
2235 {
2236         struct fb_monspecs *specs;
2237         u8 *edid;
2238         int r, i, best_idx, len;
2239
2240         if (!display->driver->read_edid)
2241                 return -ENODEV;
2242
2243         len = 0x80 * 2;
2244         edid = kmalloc(len, GFP_KERNEL);
2245         if (edid == NULL)
2246                 return -ENOMEM;
2247
2248         r = display->driver->read_edid(display, edid, len);
2249         if (r < 0)
2250                 goto err1;
2251
2252         specs = kzalloc(sizeof(*specs), GFP_KERNEL);
2253         if (specs == NULL) {
2254                 r = -ENOMEM;
2255                 goto err1;
2256         }
2257
2258         fb_edid_to_monspecs(edid, specs);
2259
2260         best_idx = -1;
2261
2262         for (i = 0; i < specs->modedb_len; ++i) {
2263                 struct fb_videomode *m;
2264                 struct omap_video_timings t;
2265
2266                 m = &specs->modedb[i];
2267
2268                 if (m->pixclock == 0)
2269                         continue;
2270
2271                 /* skip repeated pixel modes */
2272                 if (m->xres == 2880 || m->xres == 1440)
2273                         continue;
2274
2275                 if (m->vmode & FB_VMODE_INTERLACED ||
2276                                 m->vmode & FB_VMODE_DOUBLE)
2277                         continue;
2278
2279                 fb_videomode_to_omap_timings(m, display, &t);
2280
2281                 r = display->driver->check_timings(display, &t);
2282                 if (r == 0) {
2283                         best_idx = i;
2284                         break;
2285                 }
2286         }
2287
2288         if (best_idx == -1) {
2289                 r = -ENOENT;
2290                 goto err2;
2291         }
2292
2293         fb_videomode_to_omap_timings(&specs->modedb[best_idx], display,
2294                 timings);
2295
2296         r = 0;
2297
2298 err2:
2299         fb_destroy_modedb(specs->modedb);
2300         kfree(specs);
2301 err1:
2302         kfree(edid);
2303
2304         return r;
2305 }
2306
2307 static int omapfb_init_display(struct omapfb2_device *fbdev,
2308                 struct omap_dss_device *dssdev)
2309 {
2310         struct omap_dss_driver *dssdrv = dssdev->driver;
2311         struct omapfb_display_data *d;
2312         int r;
2313
2314         r = dssdrv->enable(dssdev);
2315         if (r) {
2316                 dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2317                                 dssdev->name);
2318                 return r;
2319         }
2320
2321         d = get_display_data(fbdev, dssdev);
2322
2323         d->fbdev = fbdev;
2324
2325         if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2326                 u16 w, h;
2327
2328                 if (auto_update) {
2329                         omapfb_start_auto_update(fbdev, dssdev);
2330                         d->update_mode = OMAPFB_AUTO_UPDATE;
2331                 } else {
2332                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2333                 }
2334
2335                 if (dssdrv->enable_te) {
2336                         r = dssdrv->enable_te(dssdev, 1);
2337                         if (r) {
2338                                 dev_err(fbdev->dev, "Failed to set TE\n");
2339                                 return r;
2340                         }
2341                 }
2342
2343                 dssdrv->get_resolution(dssdev, &w, &h);
2344                 r = dssdrv->update(dssdev, 0, 0, w, h);
2345                 if (r) {
2346                         dev_err(fbdev->dev,
2347                                         "Failed to update display\n");
2348                         return r;
2349                 }
2350         } else {
2351                 d->update_mode = OMAPFB_AUTO_UPDATE;
2352         }
2353
2354         return 0;
2355 }
2356
2357 static int omapfb_init_connections(struct omapfb2_device *fbdev,
2358                 struct omap_dss_device *def_dssdev)
2359 {
2360         int i, r;
2361         struct omap_overlay_manager *mgr;
2362
2363         r = def_dssdev->driver->connect(def_dssdev);
2364         if (r) {
2365                 dev_err(fbdev->dev, "failed to connect default display\n");
2366                 return r;
2367         }
2368
2369         for (i = 0; i < fbdev->num_displays; ++i) {
2370                 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev;
2371
2372                 if (dssdev == def_dssdev)
2373                         continue;
2374
2375                 /*
2376                  * We don't care if the connect succeeds or not. We just want to
2377                  * connect as many displays as possible.
2378                  */
2379                 dssdev->driver->connect(dssdev);
2380         }
2381
2382         mgr = omapdss_find_mgr_from_display(def_dssdev);
2383
2384         if (!mgr) {
2385                 dev_err(fbdev->dev, "no ovl manager for the default display\n");
2386                 return -EINVAL;
2387         }
2388
2389         for (i = 0; i < fbdev->num_overlays; i++) {
2390                 struct omap_overlay *ovl = fbdev->overlays[i];
2391
2392                 if (ovl->manager)
2393                         ovl->unset_manager(ovl);
2394
2395                 r = ovl->set_manager(ovl, mgr);
2396                 if (r)
2397                         dev_warn(fbdev->dev,
2398                                         "failed to connect overlay %s to manager %s\n",
2399                                         ovl->name, mgr->name);
2400         }
2401
2402         return 0;
2403 }
2404
2405 static struct omap_dss_device *
2406 omapfb_find_default_display(struct omapfb2_device *fbdev)
2407 {
2408         const char *def_name;
2409         int i;
2410
2411         /*
2412          * Search with the display name from the user or the board file,
2413          * comparing to display names and aliases
2414          */
2415
2416         def_name = omapdss_get_default_display_name();
2417
2418         if (def_name) {
2419                 for (i = 0; i < fbdev->num_displays; ++i) {
2420                         struct omap_dss_device *dssdev;
2421
2422                         dssdev = fbdev->displays[i].dssdev;
2423
2424                         if (dssdev->name && strcmp(def_name, dssdev->name) == 0)
2425                                 return dssdev;
2426
2427                         if (strcmp(def_name, dssdev->alias) == 0)
2428                                 return dssdev;
2429                 }
2430
2431                 /* def_name given but not found */
2432                 return NULL;
2433         }
2434
2435         /* then look for DT alias display0 */
2436         for (i = 0; i < fbdev->num_displays; ++i) {
2437                 struct omap_dss_device *dssdev;
2438                 int id;
2439
2440                 dssdev = fbdev->displays[i].dssdev;
2441
2442                 if (dssdev->dev->of_node == NULL)
2443                         continue;
2444
2445                 id = of_alias_get_id(dssdev->dev->of_node, "display");
2446                 if (id == 0)
2447                         return dssdev;
2448         }
2449
2450         /* return the first display we have in the list */
2451         return fbdev->displays[0].dssdev;
2452 }
2453
2454 static int omapfb_probe(struct platform_device *pdev)
2455 {
2456         struct omapfb2_device *fbdev = NULL;
2457         int r = 0;
2458         int i;
2459         struct omap_dss_device *def_display;
2460         struct omap_dss_device *dssdev;
2461
2462         DBG("omapfb_probe\n");
2463
2464         if (omapdss_is_initialized() == false)
2465                 return -EPROBE_DEFER;
2466
2467         if (pdev->num_resources != 0) {
2468                 dev_err(&pdev->dev, "probed for an unknown device\n");
2469                 r = -ENODEV;
2470                 goto err0;
2471         }
2472
2473         fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device),
2474                         GFP_KERNEL);
2475         if (fbdev == NULL) {
2476                 r = -ENOMEM;
2477                 goto err0;
2478         }
2479
2480         if (def_vrfb && !omap_vrfb_supported()) {
2481                 def_vrfb = 0;
2482                 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, "
2483                                 "ignoring the module parameter vrfb=y\n");
2484         }
2485
2486         r = omapdss_compat_init();
2487         if (r)
2488                 goto err0;
2489
2490         mutex_init(&fbdev->mtx);
2491
2492         fbdev->dev = &pdev->dev;
2493         platform_set_drvdata(pdev, fbdev);
2494
2495         fbdev->num_displays = 0;
2496         dssdev = NULL;
2497         for_each_dss_dev(dssdev) {
2498                 struct omapfb_display_data *d;
2499
2500                 omap_dss_get_device(dssdev);
2501
2502                 if (!dssdev->driver) {
2503                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2504                                 dssdev->name);
2505                         omap_dss_put_device(dssdev);
2506                         continue;
2507                 }
2508
2509                 d = &fbdev->displays[fbdev->num_displays++];
2510                 d->dssdev = dssdev;
2511                 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
2512                         d->update_mode = OMAPFB_MANUAL_UPDATE;
2513                 else
2514                         d->update_mode = OMAPFB_AUTO_UPDATE;
2515         }
2516
2517         if (fbdev->num_displays == 0) {
2518                 dev_err(&pdev->dev, "no displays\n");
2519                 r = -EPROBE_DEFER;
2520                 goto cleanup;
2521         }
2522
2523         fbdev->num_overlays = omap_dss_get_num_overlays();
2524         for (i = 0; i < fbdev->num_overlays; i++)
2525                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2526
2527         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2528         for (i = 0; i < fbdev->num_managers; i++)
2529                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2530
2531         def_display = omapfb_find_default_display(fbdev);
2532         if (def_display == NULL) {
2533                 dev_err(fbdev->dev, "failed to find default display\n");
2534                 r = -EPROBE_DEFER;
2535                 goto cleanup;
2536         }
2537
2538         r = omapfb_init_connections(fbdev, def_display);
2539         if (r) {
2540                 dev_err(fbdev->dev, "failed to init overlay connections\n");
2541                 goto cleanup;
2542         }
2543
2544         if (def_mode && strlen(def_mode) > 0) {
2545                 if (omapfb_parse_def_modes(fbdev))
2546                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2547         } else if (def_display && def_display->driver->set_timings &&
2548                         def_display->driver->check_timings) {
2549                 struct omap_video_timings t;
2550
2551                 r = omapfb_find_best_mode(def_display, &t);
2552
2553                 if (r == 0)
2554                         def_display->driver->set_timings(def_display, &t);
2555         }
2556
2557         r = omapfb_create_framebuffers(fbdev);
2558         if (r)
2559                 goto cleanup;
2560
2561         for (i = 0; i < fbdev->num_managers; i++) {
2562                 struct omap_overlay_manager *mgr;
2563                 mgr = fbdev->managers[i];
2564                 r = mgr->apply(mgr);
2565                 if (r)
2566                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2567         }
2568
2569         DBG("mgr->apply'ed\n");
2570
2571         if (def_display) {
2572                 r = omapfb_init_display(fbdev, def_display);
2573                 if (r) {
2574                         dev_err(fbdev->dev,
2575                                         "failed to initialize default "
2576                                         "display\n");
2577                         goto cleanup;
2578                 }
2579         }
2580
2581         DBG("create sysfs for fbs\n");
2582         r = omapfb_create_sysfs(fbdev);
2583         if (r) {
2584                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
2585                 goto cleanup;
2586         }
2587
2588         if (def_display) {
2589                 u16 w, h;
2590
2591                 def_display->driver->get_resolution(def_display, &w, &h);
2592
2593                 dev_info(fbdev->dev, "using display '%s' mode %dx%d\n",
2594                         def_display->name, w, h);
2595         }
2596
2597         return 0;
2598
2599 cleanup:
2600         omapfb_free_resources(fbdev);
2601         omapdss_compat_uninit();
2602 err0:
2603         dev_err(&pdev->dev, "failed to setup omapfb\n");
2604         return r;
2605 }
2606
2607 static int omapfb_remove(struct platform_device *pdev)
2608 {
2609         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2610
2611         /* FIXME: wait till completion of pending events */
2612
2613         omapfb_remove_sysfs(fbdev);
2614
2615         omapfb_free_resources(fbdev);
2616
2617         omapdss_compat_uninit();
2618
2619         return 0;
2620 }
2621
2622 static struct platform_driver omapfb_driver = {
2623         .probe          = omapfb_probe,
2624         .remove         = omapfb_remove,
2625         .driver         = {
2626                 .name   = "omapfb",
2627         },
2628 };
2629
2630 module_param_named(mode, def_mode, charp, 0);
2631 module_param_named(vram, def_vram, charp, 0);
2632 module_param_named(rotate, def_rotate, int, 0);
2633 module_param_named(vrfb, def_vrfb, bool, 0);
2634 module_param_named(mirror, def_mirror, bool, 0);
2635
2636 module_platform_driver(omapfb_driver);
2637
2638 MODULE_ALIAS("platform:omapfb");
2639 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2640 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2641 MODULE_LICENSE("GPL v2");