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

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