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/fb.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/vmalloc.h>
  28 #include <linux/device.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/omapfb.h>
  31
  32 #include <mach/display.h>
  33 #include <mach/vram.h>
  34 #include <mach/vrfb.h>
  35
  36 #include "omapfb.h"
  37
  38 #define MODULE_NAME     "omapfb"
  39
  40 static char *def_mode;
  41 static char *def_vram;
  42 static int def_vrfb;
  43 static int def_rotate;
  44 static int def_mirror;
  45
  46 #ifdef DEBUG
  47 unsigned int omapfb_debug;
  48 module_param_named(debug, omapfb_debug, bool, 0644);
  49 static unsigned int omapfb_test_pattern;
  50 module_param_named(test, omapfb_test_pattern, bool, 0644);
  51 #endif
  52
  53 #ifdef DEBUG
  54 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  55 {
  56         struct fb_var_screeninfo *var = &fbi->var;
  57         struct fb_fix_screeninfo *fix = &fbi->fix;
  58         void __iomem *addr = fbi->screen_base;
  59         const unsigned bytespp = var->bits_per_pixel >> 3;
  60         const unsigned line_len = fix->line_length / bytespp;
  61
  62         int r = (color >> 16) & 0xff;
  63         int g = (color >> 8) & 0xff;
  64         int b = (color >> 0) & 0xff;
  65
  66         if (var->bits_per_pixel == 16) {
  67                 u16 __iomem *p = (u16 __iomem *)addr;
  68                 p += y * line_len + x;
  69
  70                 r = r * 32 / 256;
  71                 g = g * 64 / 256;
  72                 b = b * 32 / 256;
  73
  74                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  75         } else if (var->bits_per_pixel == 24) {
  76                 u8 __iomem *p = (u8 __iomem *)addr;
  77                 p += (y * line_len + x) * 3;
  78
  79                 __raw_writeb(b, p + 0);
  80                 __raw_writeb(g, p + 1);
  81                 __raw_writeb(r, p + 2);
  82         } else if (var->bits_per_pixel == 32) {
  83                 u32 __iomem *p = (u32 __iomem *)addr;
  84                 p += y * line_len + x;
  85                 __raw_writel(color, p);
  86         }
  87 }
  88
  89 static void fill_fb(struct fb_info *fbi)
  90 {
  91         struct fb_var_screeninfo *var = &fbi->var;
  92         const short w = var->xres_virtual;
  93         const short h = var->yres_virtual;
  94         void __iomem *addr = fbi->screen_base;
  95         int y, x;
  96
  97         if (!addr)
  98                 return;
  99
 100         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 101
 102         for (y = 0; y < h; y++) {
 103                 for (x = 0; x < w; x++) {
 104                         if (x < 20 && y < 20)
 105                                 draw_pixel(fbi, x, y, 0xffffff);
 106                         else if (x < 20 && (y > 20 && y < h - 20))
 107                                 draw_pixel(fbi, x, y, 0xff);
 108                         else if (y < 20 && (x > 20 && x < w - 20))
 109                                 draw_pixel(fbi, x, y, 0xff00);
 110                         else if (x > w - 20 && (y > 20 && y < h - 20))
 111                                 draw_pixel(fbi, x, y, 0xff0000);
 112                         else if (y > h - 20 && (x > 20 && x < w - 20))
 113                                 draw_pixel(fbi, x, y, 0xffff00);
 114                         else if (x == 20 || x == w - 20 ||
 115                                         y == 20 || y == h - 20)
 116                                 draw_pixel(fbi, x, y, 0xffffff);
 117                         else if (x == y || w - x == h - y)
 118                                 draw_pixel(fbi, x, y, 0xff00ff);
 119                         else if (w - x == y || x == h - y)
 120                                 draw_pixel(fbi, x, y, 0x00ffff);
 121                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 122                                 int t = x * 3 / w;
 123                                 unsigned r = 0, g = 0, b = 0;
 124                                 unsigned c;
 125                                 if (var->bits_per_pixel == 16) {
 126                                         if (t == 0)
 127                                                 b = (y % 32) * 256 / 32;
 128                                         else if (t == 1)
 129                                                 g = (y % 64) * 256 / 64;
 130                                         else if (t == 2)
 131                                                 r = (y % 32) * 256 / 32;
 132                                 } else {
 133                                         if (t == 0)
 134                                                 b = (y % 256);
 135                                         else if (t == 1)
 136                                                 g = (y % 256);
 137                                         else if (t == 2)
 138                                                 r = (y % 256);
 139                                 }
 140                                 c = (r << 16) | (g << 8) | (b << 0);
 141                                 draw_pixel(fbi, x, y, c);
 142                         } else {
 143                                 draw_pixel(fbi, x, y, 0);
 144                         }
 145                 }
 146         }
 147 }
 148 #endif
 149
 150 static unsigned omapfb_get_vrfb_offset(struct omapfb_info *ofbi, int rot)
 151 {
 152         struct vrfb *vrfb = &ofbi->region.vrfb;
 153         unsigned offset;
 154
 155         switch (rot) {
 156         case FB_ROTATE_UR:
 157                 offset = 0;
 158                 break;
 159         case FB_ROTATE_CW:
 160                 offset = vrfb->yoffset;
 161                 break;
 162         case FB_ROTATE_UD:
 163                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 164                 break;
 165         case FB_ROTATE_CCW:
 166                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 167                 break;
 168         default:
 169                 BUG();
 170         }
 171
 172         offset *= vrfb->bytespp;
 173
 174         return offset;
 175 }
 176
 177 static u32 omapfb_get_region_rot_paddr(struct omapfb_info *ofbi)
 178 {
 179         if (ofbi->rotation_type == OMAPFB_ROT_VRFB) {
 180                 unsigned offset;
 181                 int rot;
 182
 183                 rot = ofbi->rotation;
 184
 185                 offset = omapfb_get_vrfb_offset(ofbi, rot);
 186
 187                 return ofbi->region.vrfb.paddr[rot] + offset;
 188         } else {
 189                 return ofbi->region.paddr;
 190         }
 191 }
 192
 193 u32 omapfb_get_region_paddr(struct omapfb_info *ofbi)
 194 {
 195         if (ofbi->rotation_type == OMAPFB_ROT_VRFB)
 196                 return ofbi->region.vrfb.paddr[0];
 197         else
 198                 return ofbi->region.paddr;
 199 }
 200
 201 void __iomem *omapfb_get_region_vaddr(struct omapfb_info *ofbi)
 202 {
 203         if (ofbi->rotation_type == OMAPFB_ROT_VRFB)
 204                 return ofbi->region.vrfb.vaddr[0];
 205         else
 206                 return ofbi->region.vaddr;
 207 }
 208
 209 static struct omapfb_colormode omapfb_colormodes[] = {
 210         {
 211                 .dssmode = OMAP_DSS_COLOR_UYVY,
 212                 .bits_per_pixel = 16,
 213                 .nonstd = OMAPFB_COLOR_YUV422,
 214         }, {
 215                 .dssmode = OMAP_DSS_COLOR_YUV2,
 216                 .bits_per_pixel = 16,
 217                 .nonstd = OMAPFB_COLOR_YUY422,
 218         }, {
 219                 .dssmode = OMAP_DSS_COLOR_ARGB16,
 220                 .bits_per_pixel = 16,
 221                 .red    = { .length = 4, .offset = 8, .msb_right = 0 },
 222                 .green  = { .length = 4, .offset = 4, .msb_right = 0 },
 223                 .blue   = { .length = 4, .offset = 0, .msb_right = 0 },
 224                 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
 225         }, {
 226                 .dssmode = OMAP_DSS_COLOR_RGB16,
 227                 .bits_per_pixel = 16,
 228                 .red    = { .length = 5, .offset = 11, .msb_right = 0 },
 229                 .green  = { .length = 6, .offset = 5, .msb_right = 0 },
 230                 .blue   = { .length = 5, .offset = 0, .msb_right = 0 },
 231                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 232         }, {
 233                 .dssmode = OMAP_DSS_COLOR_RGB24P,
 234                 .bits_per_pixel = 24,
 235                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 236                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 237                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 238                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 239         }, {
 240                 .dssmode = OMAP_DSS_COLOR_RGB24U,
 241                 .bits_per_pixel = 32,
 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_ARGB32,
 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 = 8, .offset = 24, .msb_right = 0 },
 253         }, {
 254                 .dssmode = OMAP_DSS_COLOR_RGBA32,
 255                 .bits_per_pixel = 32,
 256                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 257                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 258                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 259                 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
 260         }, {
 261                 .dssmode = OMAP_DSS_COLOR_RGBX32,
 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 = 0, .offset = 0, .msb_right = 0 },
 267         },
 268 };
 269
 270 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
 271                 struct omapfb_colormode *color)
 272 {
 273         bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
 274         {
 275                 return f1->length == f2->length &&
 276                         f1->offset == f2->offset &&
 277                         f1->msb_right == f2->msb_right;
 278         }
 279
 280         if (var->bits_per_pixel == 0 ||
 281                         var->red.length == 0 ||
 282                         var->blue.length == 0 ||
 283                         var->green.length == 0)
 284                 return 0;
 285
 286         return var->bits_per_pixel == color->bits_per_pixel &&
 287                 cmp_component(&var->red, &color->red) &&
 288                 cmp_component(&var->green, &color->green) &&
 289                 cmp_component(&var->blue, &color->blue) &&
 290                 cmp_component(&var->transp, &color->transp);
 291 }
 292
 293 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
 294                 struct omapfb_colormode *color)
 295 {
 296         var->bits_per_pixel = color->bits_per_pixel;
 297         var->nonstd = color->nonstd;
 298         var->red = color->red;
 299         var->green = color->green;
 300         var->blue = color->blue;
 301         var->transp = color->transp;
 302 }
 303
 304 static enum omap_color_mode fb_mode_to_dss_mode(struct fb_var_screeninfo *var)
 305 {
 306         enum omap_color_mode dssmode;
 307         int i;
 308
 309         /* first match with nonstd field */
 310         if (var->nonstd) {
 311                 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 312                         struct omapfb_colormode *mode = &omapfb_colormodes[i];
 313                         if (var->nonstd == mode->nonstd) {
 314                                 assign_colormode_to_var(var, mode);
 315                                 return mode->dssmode;
 316                         }
 317                 }
 318
 319                 return -EINVAL;
 320         }
 321
 322         /* then try exact match of bpp and colors */
 323         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 324                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 325                 if (cmp_var_to_colormode(var, mode)) {
 326                         assign_colormode_to_var(var, mode);
 327                         return mode->dssmode;
 328                 }
 329         }
 330
 331         /* match with bpp if user has not filled color fields
 332          * properly */
 333         switch (var->bits_per_pixel) {
 334         case 1:
 335                 dssmode = OMAP_DSS_COLOR_CLUT1;
 336                 break;
 337         case 2:
 338                 dssmode = OMAP_DSS_COLOR_CLUT2;
 339                 break;
 340         case 4:
 341                 dssmode = OMAP_DSS_COLOR_CLUT4;
 342                 break;
 343         case 8:
 344                 dssmode = OMAP_DSS_COLOR_CLUT8;
 345                 break;
 346         case 12:
 347                 dssmode = OMAP_DSS_COLOR_RGB12U;
 348                 break;
 349         case 16:
 350                 dssmode = OMAP_DSS_COLOR_RGB16;
 351                 break;
 352         case 24:
 353                 dssmode = OMAP_DSS_COLOR_RGB24P;
 354                 break;
 355         case 32:
 356                 dssmode = OMAP_DSS_COLOR_RGB24U;
 357                 break;
 358         default:
 359                 return -EINVAL;
 360         }
 361
 362         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 363                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 364                 if (dssmode == mode->dssmode) {
 365                         assign_colormode_to_var(var, mode);
 366                         return mode->dssmode;
 367                 }
 368         }
 369
 370         return -EINVAL;
 371 }
 372
 373 void set_fb_fix(struct fb_info *fbi)
 374 {
 375         struct fb_fix_screeninfo *fix = &fbi->fix;
 376         struct fb_var_screeninfo *var = &fbi->var;
 377         struct omapfb_info *ofbi = FB2OFB(fbi);
 378         struct omapfb2_mem_region *rg = &ofbi->region;
 379
 380         DBG("set_fb_fix\n");
 381
 382         /* used by open/write in fbmem.c */
 383         fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
 384
 385         /* used by mmap in fbmem.c */
 386         if (ofbi->rotation_type == OMAPFB_ROT_VRFB)
 387                 fix->line_length =
 388                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 389         else
 390                 fix->line_length =
 391                         (var->xres_virtual * var->bits_per_pixel) >> 3;
 392         fix->smem_start = omapfb_get_region_paddr(ofbi);
 393         fix->smem_len = rg->size;
 394
 395         fix->type = FB_TYPE_PACKED_PIXELS;
 396
 397         if (var->nonstd)
 398                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 399         else {
 400                 switch (var->bits_per_pixel) {
 401                 case 32:
 402                 case 24:
 403                 case 16:
 404                 case 12:
 405                         fix->visual = FB_VISUAL_TRUECOLOR;
 406                         /* 12bpp is stored in 16 bits */
 407                         break;
 408                 case 1:
 409                 case 2:
 410                 case 4:
 411                 case 8:
 412                         fix->visual = FB_VISUAL_PSEUDOCOLOR;
 413                         break;
 414                 }
 415         }
 416
 417         fix->accel = FB_ACCEL_NONE;
 418
 419         fix->xpanstep = 1;
 420         fix->ypanstep = 1;
 421
 422         if (rg->size) {
 423                 if (ofbi->rotation_type == OMAPFB_ROT_VRFB)
 424                         omap_vrfb_setup(&rg->vrfb, rg->paddr,
 425                                         var->xres_virtual, var->yres_virtual,
 426                                         var->bits_per_pixel >> 3);
 427         }
 428 }
 429
 430 /* check new var and possibly modify it to be ok */
 431 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 432 {
 433         struct omapfb_info *ofbi = FB2OFB(fbi);
 434         struct omap_display *display = fb2display(fbi);
 435         unsigned long max_frame_size;
 436         unsigned long line_size;
 437         int xres_min, yres_min;
 438         int xres_max, yres_max;
 439         enum omap_color_mode mode = 0;
 440         int i;
 441         int bytespp;
 442
 443         DBG("check_fb_var %d\n", ofbi->id);
 444
 445         if (ofbi->region.size == 0)
 446                 return 0;
 447
 448         mode = fb_mode_to_dss_mode(var);
 449         if (mode < 0) {
 450                 DBG("cannot convert var to omap dss mode\n");
 451                 return -EINVAL;
 452         }
 453
 454         for (i = 0; i < ofbi->num_overlays; ++i) {
 455                 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
 456                         DBG("invalid mode\n");
 457                         return -EINVAL;
 458                 }
 459         }
 460
 461         if (var->rotate < 0 || var->rotate > 3)
 462                 return -EINVAL;
 463
 464         if (var->rotate != fbi->var.rotate) {
 465                 DBG("rotation changing\n");
 466
 467                 ofbi->rotation = var->rotate;
 468
 469                 if (abs(var->rotate - fbi->var.rotate) != 2) {
 470                         int tmp;
 471                         DBG("rotate changing 90/270 degrees. "
 472                                         "swapping x/y res\n");
 473
 474                         tmp = var->yres;
 475                         var->yres = var->xres;
 476                         var->xres = tmp;
 477
 478                         tmp = var->yres_virtual;
 479                         var->yres_virtual = var->xres_virtual;
 480                         var->xres_virtual = tmp;
 481                 }
 482         }
 483
 484         xres_min = OMAPFB_PLANE_XRES_MIN;
 485         xres_max = 2048;
 486         yres_min = OMAPFB_PLANE_YRES_MIN;
 487         yres_max = 2048;
 488
 489         bytespp = var->bits_per_pixel >> 3;
 490
 491         /* XXX: some applications seem to set virtual res to 0. */
 492         if (var->xres_virtual == 0)
 493                 var->xres_virtual = var->xres;
 494
 495         if (var->yres_virtual == 0)
 496                 var->yres_virtual = var->yres;
 497
 498         if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
 499                 return -EINVAL;
 500
 501         if (var->xres < xres_min)
 502                 var->xres = xres_min;
 503         if (var->yres < yres_min)
 504                 var->yres = yres_min;
 505         if (var->xres > xres_max)
 506                 var->xres = xres_max;
 507         if (var->yres > yres_max)
 508                 var->yres = yres_max;
 509
 510         if (var->xres > var->xres_virtual)
 511                 var->xres = var->xres_virtual;
 512         if (var->yres > var->yres_virtual)
 513                 var->yres = var->yres_virtual;
 514
 515         if (ofbi->rotation_type == OMAPFB_ROT_VRFB)
 516                 line_size = OMAP_VRFB_LINE_LEN * bytespp;
 517         else
 518                 line_size = var->xres_virtual * bytespp;
 519
 520         max_frame_size = ofbi->region.size;
 521
 522         DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
 523
 524         if (line_size * var->yres_virtual > max_frame_size) {
 525                 DBG("can't fit FB into memory, reducing y\n");
 526                 var->yres_virtual = max_frame_size / line_size;
 527
 528                 if (var->yres_virtual < yres_min)
 529                         var->yres_virtual = yres_min;
 530
 531                 if (var->yres > var->yres_virtual)
 532                         var->yres = var->yres_virtual;
 533         }
 534
 535         if (line_size * var->yres_virtual > max_frame_size) {
 536                 DBG("can't fit FB into memory, reducing x\n");
 537                 if (ofbi->rotation_type == OMAPFB_ROT_VRFB)
 538                         return -EINVAL;
 539
 540                 var->xres_virtual = max_frame_size / var->yres_virtual /
 541                         bytespp;
 542
 543                 if (var->xres_virtual < xres_min)
 544                         var->xres_virtual = xres_min;
 545
 546                 if (var->xres > var->xres_virtual)
 547                         var->xres = var->xres_virtual;
 548
 549                 line_size = var->xres_virtual * bytespp;
 550         }
 551
 552         if (line_size * var->yres_virtual > max_frame_size) {
 553                 DBG("cannot fit FB to memory\n");
 554                 return -EINVAL;
 555         }
 556
 557         if (var->xres + var->xoffset > var->xres_virtual)
 558                 var->xoffset = var->xres_virtual - var->xres;
 559         if (var->yres + var->yoffset > var->yres_virtual)
 560                 var->yoffset = var->yres_virtual - var->yres;
 561
 562         DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
 563                         var->xres, var->yres,
 564                         var->xres_virtual, var->yres_virtual);
 565
 566         var->height             = -1;
 567         var->width              = -1;
 568         var->grayscale          = 0;
 569
 570         if (display && display->get_timings) {
 571                 struct omap_video_timings timings;
 572                 display->get_timings(display, &timings);
 573
 574                 /* pixclock in ps, the rest in pixclock */
 575                 var->pixclock = timings.pixel_clock != 0 ?
 576                         KHZ2PICOS(timings.pixel_clock) :
 577                         0;
 578                 var->left_margin = timings.hfp;
 579                 var->right_margin = timings.hbp;
 580                 var->upper_margin = timings.vfp;
 581                 var->lower_margin = timings.vbp;
 582                 var->hsync_len = timings.hsw;
 583                 var->vsync_len = timings.vsw;
 584         } else {
 585                 var->pixclock = 0;
 586                 var->left_margin = 0;
 587                 var->right_margin = 0;
 588                 var->upper_margin = 0;
 589                 var->lower_margin = 0;
 590                 var->hsync_len = 0;
 591                 var->vsync_len = 0;
 592         }
 593
 594         /* TODO: get these from panel->config */
 595         var->vmode              = FB_VMODE_NONINTERLACED;
 596         var->sync               = 0;
 597
 598         return 0;
 599 }
 600
 601 /*
 602  * ---------------------------------------------------------------------------
 603  * fbdev framework callbacks
 604  * ---------------------------------------------------------------------------
 605  */
 606 static int omapfb_open(struct fb_info *fbi, int user)
 607 {
 608         return 0;
 609 }
 610
 611 static int omapfb_release(struct fb_info *fbi, int user)
 612 {
 613         struct omapfb_info *ofbi = FB2OFB(fbi);
 614         struct omapfb2_device *fbdev = ofbi->fbdev;
 615         struct omap_display *display = fb2display(fbi);
 616
 617         DBG("Closing fb with plane index %d\n", ofbi->id);
 618
 619         omapfb_lock(fbdev);
 620 #if 1
 621         if (display && display->get_update_mode && display->update) {
 622                 /* XXX this update should be removed, I think. But it's
 623                  * good for debugging */
 624                 if (display->get_update_mode(display) ==
 625                                 OMAP_DSS_UPDATE_MANUAL) {
 626                         u16 w, h;
 627
 628                         if (display->sync)
 629                                 display->sync(display);
 630
 631                         display->get_resolution(display, &w, &h);
 632                         display->update(display, 0, 0, w, h);
 633                 }
 634         }
 635 #endif
 636
 637         if (display && display->sync)
 638                 display->sync(display);
 639
 640         omapfb_unlock(fbdev);
 641
 642         return 0;
 643 }
 644
 645 /* setup overlay according to the fb */
 646 static int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 647                 u16 posx, u16 posy, u16 outw, u16 outh)
 648 {
 649         int r = 0;
 650         struct omapfb_info *ofbi = FB2OFB(fbi);
 651         struct fb_var_screeninfo *var = &fbi->var;
 652         struct fb_fix_screeninfo *fix = &fbi->fix;
 653         enum omap_color_mode mode = 0;
 654         int offset;
 655         u32 data_start_p;
 656         void __iomem *data_start_v;
 657         struct omap_overlay_info info;
 658         int xres, yres;
 659         int screen_width;
 660         int rot, mirror;
 661
 662         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 663                         posx, posy, outw, outh);
 664
 665         if (ofbi->rotation == FB_ROTATE_CW || ofbi->rotation == FB_ROTATE_CCW) {
 666                 xres = var->yres;
 667                 yres = var->xres;
 668         } else {
 669                 xres = var->xres;
 670                 yres = var->yres;
 671         }
 672
 673         offset = ((var->yoffset * var->xres_virtual +
 674                                 var->xoffset) * var->bits_per_pixel) >> 3;
 675
 676         if (ofbi->rotation_type == OMAPFB_ROT_VRFB) {
 677                 data_start_p = omapfb_get_region_rot_paddr(ofbi);
 678                 data_start_v = NULL;
 679         } else {
 680                 data_start_p = omapfb_get_region_paddr(ofbi);
 681                 data_start_v = omapfb_get_region_vaddr(ofbi);
 682         }
 683
 684         data_start_p += offset;
 685         data_start_v += offset;
 686
 687         mode = fb_mode_to_dss_mode(var);
 688
 689         if (mode == -EINVAL) {
 690                 DBG("fb_mode_to_dss_mode failed");
 691                 r = -EINVAL;
 692                 goto err;
 693         }
 694
 695         screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 696
 697         ovl->get_overlay_info(ovl, &info);
 698
 699         if (ofbi->rotation_type == OMAPFB_ROT_VRFB) {
 700                 rot = 0;
 701                 mirror = 0;
 702         } else {
 703                 rot = ofbi->rotation;
 704                 mirror = ofbi->mirror;
 705         }
 706
 707         info.paddr = data_start_p;
 708         info.vaddr = data_start_v;
 709         info.screen_width = screen_width;
 710         info.width = xres;
 711         info.height = yres;
 712         info.color_mode = mode;
 713         info.rotation = rot;
 714         info.mirror = mirror;
 715
 716         info.pos_x = posx;
 717         info.pos_y = posy;
 718         info.out_width = outw;
 719         info.out_height = outh;
 720
 721         r = ovl->set_overlay_info(ovl, &info);
 722         if (r) {
 723                 DBG("ovl->setup_overlay_info failed\n");
 724                 goto err;
 725         }
 726
 727         return 0;
 728
 729 err:
 730         DBG("setup_overlay failed\n");
 731         return r;
 732 }
 733
 734 /* apply var to the overlay */
 735 int omapfb_apply_changes(struct fb_info *fbi, int init)
 736 {
 737         int r = 0;
 738         struct omapfb_info *ofbi = FB2OFB(fbi);
 739         struct fb_var_screeninfo *var = &fbi->var;
 740         struct omap_overlay *ovl;
 741         u16 posx, posy;
 742         u16 outw, outh;
 743         int i;
 744
 745 #ifdef DEBUG
 746         if (omapfb_test_pattern)
 747                 fill_fb(fbi);
 748 #endif
 749
 750         for (i = 0; i < ofbi->num_overlays; i++) {
 751                 ovl = ofbi->overlays[i];
 752
 753                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 754
 755                 if (ofbi->region.size == 0) {
 756                         /* the fb is not available. disable the overlay */
 757                         omapfb_overlay_enable(ovl, 0);
 758                         if (!init && ovl->manager)
 759                                 ovl->manager->apply(ovl->manager);
 760                         continue;
 761                 }
 762
 763                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 764                         if (ofbi->rotation == FB_ROTATE_CW ||
 765                                         ofbi->rotation == FB_ROTATE_CCW) {
 766                                 outw = var->yres;
 767                                 outh = var->xres;
 768                         } else {
 769                                 outw = var->xres;
 770                                 outh = var->yres;
 771                         }
 772                 } else {
 773                         outw = ovl->info.out_width;
 774                         outh = ovl->info.out_height;
 775                 }
 776
 777                 if (init) {
 778                         posx = 0;
 779                         posy = 0;
 780                 } else {
 781                         posx = ovl->info.pos_x;
 782                         posy = ovl->info.pos_y;
 783                 }
 784
 785                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
 786                 if (r)
 787                         goto err;
 788
 789                 if (!init && ovl->manager)
 790                         ovl->manager->apply(ovl->manager);
 791         }
 792         return 0;
 793 err:
 794         DBG("apply_changes failed\n");
 795         return r;
 796 }
 797
 798 /* checks var and eventually tweaks it to something supported,
 799  * DO NOT MODIFY PAR */
 800 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
 801 {
 802         int r;
 803
 804         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
 805
 806         r = check_fb_var(fbi, var);
 807
 808         return r;
 809 }
 810
 811 /* set the video mode according to info->var */
 812 static int omapfb_set_par(struct fb_info *fbi)
 813 {
 814         int r;
 815
 816         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
 817
 818         set_fb_fix(fbi);
 819         r = omapfb_apply_changes(fbi, 0);
 820
 821         return r;
 822 }
 823
 824 static int omapfb_pan_display(struct fb_var_screeninfo *var,
 825                 struct fb_info *fbi)
 826 {
 827         struct omapfb_info *ofbi = FB2OFB(fbi);
 828         struct omapfb2_device *fbdev = ofbi->fbdev;
 829         int r = 0;
 830
 831         DBG("pan_display(%d)\n", ofbi->id);
 832
 833         omapfb_lock(fbdev);
 834
 835         if (var->xoffset != fbi->var.xoffset ||
 836             var->yoffset != fbi->var.yoffset) {
 837                 struct fb_var_screeninfo new_var;
 838
 839                 new_var = fbi->var;
 840                 new_var.xoffset = var->xoffset;
 841                 new_var.yoffset = var->yoffset;
 842
 843                 r = check_fb_var(fbi, &new_var);
 844
 845                 if (r == 0) {
 846                         fbi->var = new_var;
 847                         set_fb_fix(fbi);
 848                         r = omapfb_apply_changes(fbi, 0);
 849                 }
 850         }
 851
 852         omapfb_unlock(fbdev);
 853
 854         return r;
 855 }
 856
 857 static void mmap_user_open(struct vm_area_struct *vma)
 858 {
 859         struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
 860
 861         atomic_inc(&ofbi->map_count);
 862 }
 863
 864 static void mmap_user_close(struct vm_area_struct *vma)
 865 {
 866         struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
 867
 868         atomic_dec(&ofbi->map_count);
 869 }
 870
 871 static struct vm_operations_struct mmap_user_ops = {
 872         .open = mmap_user_open,
 873         .close = mmap_user_close,
 874 };
 875
 876 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
 877 {
 878         struct omapfb_info *ofbi = FB2OFB(fbi);
 879         struct fb_fix_screeninfo *fix = &fbi->fix;
 880         unsigned long off;
 881         unsigned long start;
 882         u32 len;
 883
 884         if (vma->vm_end - vma->vm_start == 0)
 885                 return 0;
 886         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
 887                 return -EINVAL;
 888         off = vma->vm_pgoff << PAGE_SHIFT;
 889
 890         start = omapfb_get_region_paddr(ofbi);
 891         len = fix->smem_len;
 892         if (off >= len)
 893                 return -EINVAL;
 894         if ((vma->vm_end - vma->vm_start + off) > len)
 895                 return -EINVAL;
 896
 897         off += start;
 898
 899         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
 900
 901         vma->vm_pgoff = off >> PAGE_SHIFT;
 902         vma->vm_flags |= VM_IO | VM_RESERVED;
 903         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 904         vma->vm_ops = &mmap_user_ops;
 905         vma->vm_private_data = ofbi;
 906         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
 907                              vma->vm_end - vma->vm_start, vma->vm_page_prot))
 908                 return -EAGAIN;
 909         /* vm_ops.open won't be called for mmap itself. */
 910         atomic_inc(&ofbi->map_count);
 911         return 0;
 912 }
 913
 914 /* Store a single color palette entry into a pseudo palette or the hardware
 915  * palette if one is available. For now we support only 16bpp and thus store
 916  * the entry only to the pseudo palette.
 917  */
 918 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
 919                 u_int blue, u_int transp, int update_hw_pal)
 920 {
 921         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
 922         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
 923         struct fb_var_screeninfo *var = &fbi->var;
 924         int r = 0;
 925
 926         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
 927
 928         /*switch (plane->color_mode) {*/
 929         switch (mode) {
 930         case OMAPFB_COLOR_YUV422:
 931         case OMAPFB_COLOR_YUV420:
 932         case OMAPFB_COLOR_YUY422:
 933                 r = -EINVAL;
 934                 break;
 935         case OMAPFB_COLOR_CLUT_8BPP:
 936         case OMAPFB_COLOR_CLUT_4BPP:
 937         case OMAPFB_COLOR_CLUT_2BPP:
 938         case OMAPFB_COLOR_CLUT_1BPP:
 939                 /*
 940                    if (fbdev->ctrl->setcolreg)
 941                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
 942                    transp, update_hw_pal);
 943                    */
 944                 /* Fallthrough */
 945                 r = -EINVAL;
 946                 break;
 947         case OMAPFB_COLOR_RGB565:
 948         case OMAPFB_COLOR_RGB444:
 949         case OMAPFB_COLOR_RGB24P:
 950         case OMAPFB_COLOR_RGB24U:
 951                 if (r != 0)
 952                         break;
 953
 954                 if (regno < 0) {
 955                         r = -EINVAL;
 956                         break;
 957                 }
 958
 959                 if (regno < 16) {
 960                         u16 pal;
 961                         pal = ((red >> (16 - var->red.length)) <<
 962                                         var->red.offset) |
 963                                 ((green >> (16 - var->green.length)) <<
 964                                  var->green.offset) |
 965                                 (blue >> (16 - var->blue.length));
 966                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
 967                 }
 968                 break;
 969         default:
 970                 BUG();
 971         }
 972         return r;
 973 }
 974
 975 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 976                 u_int transp, struct fb_info *info)
 977 {
 978         DBG("setcolreg\n");
 979
 980         return _setcolreg(info, regno, red, green, blue, transp, 1);
 981 }
 982
 983 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
 984 {
 985         int count, index, r;
 986         u16 *red, *green, *blue, *transp;
 987         u16 trans = 0xffff;
 988
 989         DBG("setcmap\n");
 990
 991         red     = cmap->red;
 992         green   = cmap->green;
 993         blue    = cmap->blue;
 994         transp  = cmap->transp;
 995         index   = cmap->start;
 996
 997         for (count = 0; count < cmap->len; count++) {
 998                 if (transp)
 999                         trans = *transp++;
1000                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1001                                 count == cmap->len - 1);
1002                 if (r != 0)
1003                         return r;
1004         }
1005
1006         return 0;
1007 }
1008
1009 static int omapfb_blank(int blank, struct fb_info *fbi)
1010 {
1011         struct omapfb_info *ofbi = FB2OFB(fbi);
1012         struct omapfb2_device *fbdev = ofbi->fbdev;
1013         struct omap_display *display = fb2display(fbi);
1014         int do_update = 0;
1015         int r = 0;
1016
1017         omapfb_lock(fbdev);
1018
1019         switch (blank) {
1020         case FB_BLANK_UNBLANK:
1021                 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1022                         goto exit;
1023
1024                 if (display->resume)
1025                         r = display->resume(display);
1026
1027                 if (r == 0 && display->get_update_mode &&
1028                                 display->get_update_mode(display) ==
1029                                 OMAP_DSS_UPDATE_MANUAL)
1030                         do_update = 1;
1031
1032                 break;
1033
1034         case FB_BLANK_NORMAL:
1035                 /* FB_BLANK_NORMAL could be implemented.
1036                  * Needs DSS additions. */
1037         case FB_BLANK_VSYNC_SUSPEND:
1038         case FB_BLANK_HSYNC_SUSPEND:
1039         case FB_BLANK_POWERDOWN:
1040                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1041                         goto exit;
1042
1043                 if (display->suspend)
1044                         r = display->suspend(display);
1045
1046                 break;
1047
1048         default:
1049                 r = -EINVAL;
1050         }
1051
1052 exit:
1053         omapfb_unlock(fbdev);
1054
1055         if (r == 0 && do_update && display->update) {
1056                 u16 w, h;
1057                 display->get_resolution(display, &w, &h);
1058
1059                 r = display->update(display, 0, 0, w, h);
1060         }
1061
1062         return r;
1063 }
1064
1065 #if 0
1066 /* XXX fb_read and fb_write are needed for VRFB */
1067 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1068                 size_t count, loff_t *ppos)
1069 {
1070         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1071         // XXX needed for VRFB
1072         return count;
1073 }
1074 #endif
1075
1076 static struct fb_ops omapfb_ops = {
1077         .owner          = THIS_MODULE,
1078         .fb_open        = omapfb_open,
1079         .fb_release     = omapfb_release,
1080         .fb_fillrect    = cfb_fillrect,
1081         .fb_copyarea    = cfb_copyarea,
1082         .fb_imageblit   = cfb_imageblit,
1083         .fb_blank       = omapfb_blank,
1084         .fb_ioctl       = omapfb_ioctl,
1085         .fb_check_var   = omapfb_check_var,
1086         .fb_set_par     = omapfb_set_par,
1087         .fb_pan_display = omapfb_pan_display,
1088         .fb_mmap        = omapfb_mmap,
1089         .fb_setcolreg   = omapfb_setcolreg,
1090         .fb_setcmap     = omapfb_setcmap,
1091         //.fb_write     = omapfb_write,
1092 };
1093
1094 static void omapfb_free_fbmem(struct fb_info *fbi)
1095 {
1096         struct omapfb_info *ofbi = FB2OFB(fbi);
1097         struct omapfb2_device *fbdev = ofbi->fbdev;
1098         struct omapfb2_mem_region *rg;
1099
1100         rg = &ofbi->region;
1101
1102         if (rg->paddr)
1103                 if (omap_vram_free(rg->paddr, rg->size))
1104                         dev_err(fbdev->dev, "VRAM FREE failed\n");
1105
1106         if (rg->vaddr)
1107                 iounmap(rg->vaddr);
1108
1109         if (ofbi->rotation_type == OMAPFB_ROT_VRFB) {
1110                 /* unmap the 0 angle rotation */
1111                 if (rg->vrfb.vaddr[0]) {
1112                         iounmap(rg->vrfb.vaddr[0]);
1113                         omap_vrfb_release_ctx(&rg->vrfb);
1114                 }
1115         }
1116
1117         rg->vaddr = NULL;
1118         rg->paddr = 0;
1119         rg->alloc = 0;
1120         rg->size = 0;
1121 }
1122
1123 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1124 {
1125         int i;
1126
1127         DBG("free all fbmem\n");
1128
1129         for (i = 0; i < fbdev->num_fbs; i++) {
1130                 struct fb_info *fbi = fbdev->fbs[i];
1131                 omapfb_free_fbmem(fbi);
1132                 memset(&fbi->fix, 0, sizeof(fbi->fix));
1133                 memset(&fbi->var, 0, sizeof(fbi->var));
1134         }
1135
1136         return 0;
1137 }
1138
1139 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1140                 unsigned long paddr)
1141 {
1142         struct omapfb_info *ofbi = FB2OFB(fbi);
1143         struct omapfb2_device *fbdev = ofbi->fbdev;
1144         struct omapfb2_mem_region *rg;
1145         void __iomem *vaddr;
1146         int r;
1147         int clear = 0;
1148
1149         rg = &ofbi->region;
1150         memset(rg, 0, sizeof(*rg));
1151
1152         size = PAGE_ALIGN(size);
1153
1154         if (!paddr) {
1155                 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1156                 r = omap_vram_alloc(OMAPFB_MEMTYPE_SDRAM, size, &paddr);
1157                 clear = 1;
1158         } else {
1159                 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1160                                 ofbi->id);
1161                 r = omap_vram_reserve(paddr, size);
1162         }
1163
1164         if (r) {
1165                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1166                 return -ENOMEM;
1167         }
1168
1169         if (ofbi->rotation_type != OMAPFB_ROT_VRFB) {
1170                 vaddr = ioremap_wc(paddr, size);
1171
1172                 if (!vaddr) {
1173                         dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1174                         omap_vram_free(paddr, size);
1175                         return -ENOMEM;
1176                 }
1177
1178                 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1179
1180                 if (clear)
1181                         memset_io(vaddr, 0, size);
1182         } else {
1183                 void __iomem *va;
1184
1185                 r = omap_vrfb_request_ctx(&rg->vrfb);
1186                 if (r) {
1187                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1188                         return r;
1189                 }
1190
1191                 /* only ioremap the 0 angle view */
1192                 va = ioremap_wc(rg->vrfb.paddr[0], size);
1193
1194                 if(!va) {
1195                         printk(KERN_ERR "vrfb: ioremap failed\n");
1196                         omap_vrfb_release_ctx(&rg->vrfb);
1197                         return -ENOMEM;
1198                 }
1199
1200                 DBG("ioremapped vrfb area 0 to %p\n", va);
1201
1202                 rg->vrfb.vaddr[0] = va;
1203
1204                 vaddr = NULL;
1205
1206                 if (clear)
1207                         memset_io(va, 0, size);
1208         }
1209
1210         rg->paddr = paddr;
1211         rg->vaddr = vaddr;
1212         rg->size = size;
1213         rg->alloc = 1;
1214
1215         return 0;
1216 }
1217
1218 /* allocate fbmem using display resolution as reference */
1219 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1220                 unsigned long paddr)
1221 {
1222         struct omapfb_info *ofbi = FB2OFB(fbi);
1223         struct omap_display *display;
1224         int bytespp;
1225
1226         display =  fb2display(fbi);
1227
1228         if (!display)
1229                 return 0;
1230
1231         switch (display->get_recommended_bpp(display)) {
1232         case 16:
1233                 bytespp = 2;
1234                 break;
1235         case 24:
1236                 bytespp = 4;
1237                 break;
1238         default:
1239                 bytespp = 4;
1240                 break;
1241         }
1242
1243         if (!size) {
1244                 u16 w, h;
1245
1246                 display->get_resolution(display, &w, &h);
1247
1248                 if (ofbi->rotation_type == OMAPFB_ROT_VRFB) {
1249                         int oldw = w, oldh = h;
1250
1251                         omap_vrfb_adjust_size(&w, &h, bytespp);
1252
1253                         /* Because we change the resolution of the 0 degree view,
1254                          * we need to alloc max(w, h) for height */
1255                         h = max(w, h);
1256                         w = OMAP_VRFB_LINE_LEN;
1257
1258                         DBG("adjusting fb mem size for VRFB, %dx%d -> %dx%d\n",
1259                                         oldw, oldh, w, h);
1260                 }
1261
1262                 size = w * h * bytespp;
1263         }
1264
1265         return omapfb_alloc_fbmem(fbi, size, paddr);
1266 }
1267
1268 static int omapfb_parse_vram_param(const char *param, int max_entries,
1269                 unsigned long *sizes, unsigned long *paddrs)
1270 {
1271         int fbnum;
1272         unsigned long size;
1273         unsigned long paddr = 0;
1274         char *p, *start;
1275
1276         start = (char *)param;
1277
1278         while (1) {
1279                 p = start;
1280
1281                 fbnum = simple_strtoul(p, &p, 10);
1282
1283                 if (p == param)
1284                         return -EINVAL;
1285
1286                 if (*p != ':')
1287                         return -EINVAL;
1288
1289                 if (fbnum >= max_entries)
1290                         return -EINVAL;
1291
1292                 size = memparse(p + 1, &p);
1293
1294                 if (!size)
1295                         return -EINVAL;
1296
1297                 paddr = 0;
1298
1299                 if (*p == '@') {
1300                         paddr = simple_strtoul(p + 1, &p, 16);
1301
1302                         if (!paddr)
1303                                 return -EINVAL;
1304
1305                 }
1306
1307                 paddrs[fbnum] = paddr;
1308                 sizes[fbnum] = size;
1309
1310                 if (*p == 0)
1311                         break;
1312
1313                 if (*p != ',')
1314                         return -EINVAL;
1315
1316                 ++p;
1317
1318                 start = p;
1319         }
1320
1321         return 0;
1322 }
1323
1324 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1325 {
1326         int i, r;
1327         unsigned long vram_sizes[10];
1328         unsigned long vram_paddrs[10];
1329
1330         memset(&vram_sizes, 0, sizeof(vram_sizes));
1331         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1332
1333         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1334                                 vram_sizes, vram_paddrs)) {
1335                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1336
1337                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1338                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1339         }
1340
1341         if (fbdev->dev->platform_data) {
1342                 struct omapfb_platform_data *opd;
1343                 opd = fbdev->dev->platform_data;
1344                 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1345                         if (!vram_sizes[i]) {
1346                                 unsigned long size;
1347                                 unsigned long paddr;
1348
1349                                 size = opd->mem_desc.region[i].size;
1350                                 paddr = opd->mem_desc.region[i].paddr;
1351
1352                                 vram_sizes[i] = size;
1353                                 vram_paddrs[i] = paddr;
1354                         }
1355                 }
1356         }
1357
1358         for (i = 0; i < fbdev->num_fbs; i++) {
1359                 /* allocate memory automatically only for fb0, or if
1360                  * excplicitly defined with vram or plat data option */
1361                 if (i == 0 || vram_sizes[i] != 0) {
1362                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1363                                         vram_sizes[i], vram_paddrs[i]);
1364
1365                         if (r)
1366                                 return r;
1367                 }
1368         }
1369
1370         for (i = 0; i < fbdev->num_fbs; i++) {
1371                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1372                 struct omapfb2_mem_region *rg;
1373                 rg = &ofbi->region;
1374
1375                 DBG("region%d phys %08x virt %p size=%lu\n",
1376                                 i,
1377                                 rg->paddr,
1378                                 rg->vaddr,
1379                                 rg->size);
1380         }
1381
1382         return 0;
1383 }
1384
1385 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1386 {
1387         struct omapfb_info *ofbi = FB2OFB(fbi);
1388         struct omapfb2_device *fbdev = ofbi->fbdev;
1389         struct omap_display *display = fb2display(fbi);
1390         struct omapfb2_mem_region *rg = &ofbi->region;
1391         unsigned long old_size = rg->size;
1392         unsigned long old_paddr = rg->paddr;
1393         int old_type = rg->type;
1394         int r;
1395
1396         if (type > OMAPFB_MEMTYPE_MAX)
1397                 return -EINVAL;
1398
1399         size = PAGE_ALIGN(size);
1400
1401         if (old_size == size && old_type == type)
1402                 return 0;
1403
1404         if (display && display->sync)
1405                         display->sync(display);
1406
1407         omapfb_free_fbmem(fbi);
1408
1409         if (size == 0) {
1410                 memset(&fbi->fix, 0, sizeof(fbi->fix));
1411                 memset(&fbi->var, 0, sizeof(fbi->var));
1412                 return 0;
1413         }
1414
1415         r = omapfb_alloc_fbmem(fbi, size, 0);
1416
1417         if (r) {
1418                 if (old_size)
1419                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1420
1421                 if (rg->size == 0) {
1422                         memset(&fbi->fix, 0, sizeof(fbi->fix));
1423                         memset(&fbi->var, 0, sizeof(fbi->var));
1424                 }
1425
1426                 return r;
1427         }
1428
1429         if (old_size == size)
1430                 return 0;
1431
1432         if (old_size == 0) {
1433                 DBG("initializing fb %d\n", ofbi->id);
1434                 r = omapfb_fb_init(fbdev, fbi);
1435                 if (r) {
1436                         DBG("omapfb_fb_init failed\n");
1437                         goto err;
1438                 }
1439                 r = omapfb_apply_changes(fbi, 1);
1440                 if (r) {
1441                         DBG("omapfb_apply_changes failed\n");
1442                         goto err;
1443                 }
1444         } else {
1445                 struct fb_var_screeninfo new_var;
1446                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1447                 r = check_fb_var(fbi, &new_var);
1448                 if (r)
1449                         goto err;
1450                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1451                 set_fb_fix(fbi);
1452         }
1453
1454         return 0;
1455 err:
1456         omapfb_free_fbmem(fbi);
1457         memset(&fbi->fix, 0, sizeof(fbi->fix));
1458         memset(&fbi->var, 0, sizeof(fbi->var));
1459         return r;
1460 }
1461
1462 /* initialize fb_info, var, fix to something sane based on the display */
1463 int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1464 {
1465         struct fb_var_screeninfo *var = &fbi->var;
1466         struct fb_fix_screeninfo *fix = &fbi->fix;
1467         struct omap_display *display = fb2display(fbi);
1468         struct omapfb_info *ofbi = FB2OFB(fbi);
1469         int r = 0;
1470
1471         fbi->fbops = &omapfb_ops;
1472         fbi->flags = FBINFO_FLAG_DEFAULT;
1473         fbi->pseudo_palette = fbdev->pseudo_palette;
1474
1475         strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
1476
1477         if (ofbi->region.size == 0) {
1478                 memset(&fbi->fix, 0, sizeof(fbi->fix));
1479                 memset(&fbi->var, 0, sizeof(fbi->var));
1480                 return 0;
1481         }
1482
1483         var->nonstd = 0;
1484
1485         var->rotate = ofbi->rotation;
1486
1487         if (display) {
1488                 u16 w, h;
1489                 display->get_resolution(display, &w, &h);
1490
1491                 if (ofbi->rotation == FB_ROTATE_CW ||
1492                                 ofbi->rotation == FB_ROTATE_CCW) {
1493                         var->xres = h;
1494                         var->yres = w;
1495                 } else {
1496                         var->xres = w;
1497                         var->yres = h;
1498                 }
1499
1500                 var->xres_virtual = var->xres;
1501                 var->yres_virtual = var->yres;
1502
1503                 switch (display->get_recommended_bpp(display)) {
1504                 case 16:
1505                         var->bits_per_pixel = 16;
1506                         break;
1507                 case 24:
1508                         var->bits_per_pixel = 32;
1509                         break;
1510                 default:
1511                         dev_err(fbdev->dev, "illegal display bpp\n");
1512                         return -EINVAL;
1513                 }
1514         } else {
1515                 /* if there's no display, let's just guess some basic values */
1516                 var->xres = 320;
1517                 var->yres = 240;
1518                 var->xres_virtual = var->xres;
1519                 var->yres_virtual = var->yres;
1520                 var->bits_per_pixel = 16;
1521         }
1522
1523         r = check_fb_var(fbi, var);
1524         if (r)
1525                 goto err;
1526
1527         set_fb_fix(fbi);
1528 err:
1529         return r;
1530 }
1531
1532 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1533 {
1534         fb_dealloc_cmap(&fbi->cmap);
1535 }
1536
1537
1538 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1539 {
1540         int i;
1541
1542         DBG("free_resources\n");
1543
1544         if (fbdev == NULL)
1545                 return;
1546
1547         for (i = 0; i < fbdev->num_fbs; i++)
1548                 unregister_framebuffer(fbdev->fbs[i]);
1549
1550         /* free the reserved fbmem */
1551         omapfb_free_all_fbmem(fbdev);
1552
1553         for (i = 0; i < fbdev->num_fbs; i++) {
1554                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1555                 framebuffer_release(fbdev->fbs[i]);
1556         }
1557
1558         for (i = 0; i < fbdev->num_displays; i++) {
1559                 if (fbdev->displays[i]->state != OMAP_DSS_DISPLAY_DISABLED)
1560                         fbdev->displays[i]->disable(fbdev->displays[i]);
1561
1562                 omap_dss_put_display(fbdev->displays[i]);
1563         }
1564
1565         dev_set_drvdata(fbdev->dev, NULL);
1566         kfree(fbdev);
1567 }
1568
1569 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1570 {
1571         int r, i;
1572
1573         fbdev->num_fbs = 0;
1574
1575         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1576
1577         /* allocate fb_infos */
1578         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1579                 struct fb_info *fbi;
1580                 struct omapfb_info *ofbi;
1581
1582                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1583                                 fbdev->dev);
1584
1585                 if (fbi == NULL) {
1586                         dev_err(fbdev->dev,
1587                                 "unable to allocate memory for plane info\n");
1588                         return -ENOMEM;
1589                 }
1590
1591                 fbdev->fbs[i] = fbi;
1592
1593                 ofbi = FB2OFB(fbi);
1594                 ofbi->fbdev = fbdev;
1595                 ofbi->id = i;
1596
1597                 /* assign these early, so that fb alloc can use them */
1598                 ofbi->rotation_type = def_vrfb ? OMAPFB_ROT_VRFB :
1599                         OMAPFB_ROT_DMA;
1600                 ofbi->rotation = def_rotate;
1601                 ofbi->mirror = def_mirror;
1602
1603                 fbdev->num_fbs++;
1604         }
1605
1606         DBG("fb_infos allocated\n");
1607
1608         /* assign overlays for the fbs */
1609         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1610                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1611
1612                 ofbi->overlays[0] = fbdev->overlays[i];
1613                 ofbi->num_overlays = 1;
1614         }
1615
1616         /* allocate fb memories */
1617         r = omapfb_allocate_all_fbs(fbdev);
1618         if (r) {
1619                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1620                 return r;
1621         }
1622
1623         DBG("fbmems allocated\n");
1624
1625         /* setup fb_infos */
1626         for (i = 0; i < fbdev->num_fbs; i++) {
1627                 r = omapfb_fb_init(fbdev, fbdev->fbs[i]);
1628                 if (r) {
1629                         dev_err(fbdev->dev, "failed to setup fb_info\n");
1630                         return r;
1631                 }
1632         }
1633
1634         DBG("fb_infos initialized\n");
1635
1636         for (i = 0; i < fbdev->num_fbs; i++) {
1637                 r = register_framebuffer(fbdev->fbs[i]);
1638                 if (r != 0) {
1639                         dev_err(fbdev->dev,
1640                                 "registering framebuffer %d failed\n", i);
1641                         return r;
1642                 }
1643         }
1644
1645         DBG("framebuffers registered\n");
1646
1647         for (i = 0; i < fbdev->num_fbs; i++) {
1648                 r = omapfb_apply_changes(fbdev->fbs[i], 1);
1649                 if (r) {
1650                         dev_err(fbdev->dev, "failed to change mode\n");
1651                         return r;
1652                 }
1653         }
1654
1655         DBG("create sysfs for fbs\n");
1656         r = omapfb_create_sysfs(fbdev);
1657         if (r) {
1658                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
1659                 return r;
1660         }
1661
1662         /* Enable fb0 */
1663         if (fbdev->num_fbs > 0) {
1664                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1665
1666                 if (ofbi->num_overlays > 0 ) {
1667                         struct omap_overlay *ovl = ofbi->overlays[0];
1668
1669                         r = omapfb_overlay_enable(ovl, 1);
1670
1671                         if (r) {
1672                                 dev_err(fbdev->dev,
1673                                                 "failed to enable overlay\n");
1674                                 return r;
1675                         }
1676                 }
1677         }
1678
1679         DBG("create_framebuffers done\n");
1680
1681         return 0;
1682 }
1683
1684 int omapfb_mode_to_timings(const char *mode_str,
1685                 struct omap_video_timings *timings, u8 *bpp)
1686 {
1687         struct fb_info fbi;
1688         struct fb_var_screeninfo var;
1689         struct fb_ops fbops;
1690         int r;
1691
1692 #ifdef CONFIG_OMAP2_DSS_VENC
1693         if (strcmp(mode_str, "pal") == 0) {
1694                 *timings = omap_dss_pal_timings;
1695                 *bpp = 0;
1696                 return 0;
1697         } else if (strcmp(mode_str, "ntsc") == 0) {
1698                 *timings = omap_dss_ntsc_timings;
1699                 *bpp = 0;
1700                 return 0;
1701         }
1702 #endif
1703
1704         /* this is quite a hack, but I wanted to use the modedb and for
1705          * that we need fb_info and var, so we create dummy ones */
1706
1707         memset(&fbi, 0, sizeof(fbi));
1708         memset(&var, 0, sizeof(var));
1709         memset(&fbops, 0, sizeof(fbops));
1710         fbi.fbops = &fbops;
1711
1712         r = fb_find_mode(&var, &fbi, mode_str, NULL, 0, NULL, 24);
1713
1714         if (r != 0) {
1715                 timings->pixel_clock = PICOS2KHZ(var.pixclock);
1716                 timings->hfp = var.left_margin;
1717                 timings->hbp = var.right_margin;
1718                 timings->vfp = var.upper_margin;
1719                 timings->vbp = var.lower_margin;
1720                 timings->hsw = var.hsync_len;
1721                 timings->vsw = var.vsync_len;
1722                 timings->x_res = var.xres;
1723                 timings->y_res = var.yres;
1724
1725                 switch (var.bits_per_pixel) {
1726                 case 16:
1727                         *bpp = 16;
1728                         break;
1729                 case 24:
1730                 case 32:
1731                 default:
1732                         *bpp = 24;
1733                         break;
1734                 }
1735
1736                 return 0;
1737         } else {
1738                 return -EINVAL;
1739         }
1740 }
1741
1742 static int omapfb_set_def_mode(struct omap_display *display, char *mode_str)
1743 {
1744         int r;
1745         u8 bpp;
1746         struct omap_video_timings timings;
1747
1748         r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
1749         if (r)
1750                 return r;
1751
1752         display->panel->recommended_bpp = bpp;
1753
1754         if (!display->check_timings || !display->set_timings)
1755                 return -EINVAL;
1756
1757         r = display->check_timings(display, &timings);
1758         if (r)
1759                 return r;
1760
1761         display->set_timings(display, &timings);
1762
1763         return 0;
1764 }
1765
1766 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
1767 {
1768         char *str, *options, *this_opt;
1769         int r = 0;
1770
1771         str = kmalloc(strlen(def_mode) + 1, GFP_KERNEL);
1772         strcpy(str, def_mode);
1773         options = str;
1774
1775         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
1776                 char *p, *display_str, *mode_str;
1777                 struct omap_display *display;
1778                 int i;
1779
1780                 p = strchr(this_opt, ':');
1781                 if (!p) {
1782                         r = -EINVAL;
1783                         break;
1784                 }
1785
1786                 *p = 0;
1787                 display_str = this_opt;
1788                 mode_str = p + 1;
1789
1790                 display = NULL;
1791                 for (i = 0; i < fbdev->num_displays; ++i) {
1792                         if (strcmp(fbdev->displays[i]->name,
1793                                                 display_str) == 0) {
1794                                 display = fbdev->displays[i];
1795                                 break;
1796                         }
1797                 }
1798
1799                 if (!display) {
1800                         r = -EINVAL;
1801                         break;
1802                 }
1803
1804                 r = omapfb_set_def_mode(display, mode_str);
1805                 if (r)
1806                         break;
1807         }
1808
1809         kfree(str);
1810
1811         return r;
1812 }
1813
1814 static int omapfb_probe(struct platform_device *pdev)
1815 {
1816         struct omapfb2_device *fbdev = NULL;
1817         int r = 0;
1818         int i, t;
1819         struct omap_overlay *ovl;
1820         struct omap_display *def_display;
1821
1822         DBG("omapfb_probe\n");
1823
1824         if (pdev->num_resources != 0) {
1825                 dev_err(&pdev->dev, "probed for an unknown device\n");
1826                 r = -ENODEV;
1827                 goto err0;
1828         }
1829
1830         fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
1831         if (fbdev == NULL) {
1832                 r = -ENOMEM;
1833                 goto err0;
1834         }
1835
1836         mutex_init(&fbdev->mtx);
1837
1838         fbdev->dev = &pdev->dev;
1839         platform_set_drvdata(pdev, fbdev);
1840
1841         fbdev->num_displays = 0;
1842         t = omap_dss_get_num_displays();
1843         for (i = 0; i < t; i++) {
1844                 struct omap_display *display;
1845                 display = omap_dss_get_display(i);
1846                 if (!display) {
1847                         dev_err(&pdev->dev, "can't get display %d\n", i);
1848                         r = -EINVAL;
1849                         goto cleanup;
1850                 }
1851
1852                 fbdev->displays[fbdev->num_displays++] = display;
1853         }
1854
1855         if (fbdev->num_displays == 0) {
1856                 dev_err(&pdev->dev, "no displays\n");
1857                 r = -EINVAL;
1858                 goto cleanup;
1859         }
1860
1861         fbdev->num_overlays = omap_dss_get_num_overlays();
1862         for (i = 0; i < fbdev->num_overlays; i++)
1863                 fbdev->overlays[i] = omap_dss_get_overlay(i);
1864
1865         fbdev->num_managers = omap_dss_get_num_overlay_managers();
1866         for (i = 0; i < fbdev->num_managers; i++)
1867                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
1868
1869
1870         /* gfx overlay should be the default one. find a display
1871          * connected to that, and use it as default display */
1872         ovl = omap_dss_get_overlay(0);
1873         if (ovl->manager && ovl->manager->display) {
1874                 def_display = ovl->manager->display;
1875         } else {
1876                 dev_err(&pdev->dev, "cannot find default display\n");
1877                 r = -EINVAL;
1878                 goto cleanup;
1879         }
1880
1881         if (def_mode && strlen(def_mode) > 0) {
1882                 if (omapfb_parse_def_modes(fbdev))
1883                         dev_err(&pdev->dev, "cannot parse default modes\n");
1884         }
1885
1886         r = omapfb_create_framebuffers(fbdev);
1887         if (r)
1888                 goto cleanup;
1889
1890         for (i = 0; i < fbdev->num_managers; i++) {
1891                 struct omap_overlay_manager *mgr;
1892                 mgr = fbdev->managers[i];
1893                 r = mgr->apply(mgr);
1894                 if (r) {
1895                         dev_err(fbdev->dev, "failed to apply dispc config\n");
1896                         goto cleanup;
1897                 }
1898         }
1899
1900         DBG("mgr->apply'ed\n");
1901
1902         r = def_display->enable(def_display);
1903         if (r) {
1904                 dev_err(fbdev->dev, "Failed to enable display '%s'\n",
1905                                 def_display->name);
1906                 goto cleanup;
1907         }
1908
1909         /* set the update mode */
1910         if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
1911 #ifdef CONFIG_FB_OMAP2_FORCE_AUTO_UPDATE
1912                 if (def_display->set_update_mode)
1913                         def_display->set_update_mode(def_display,
1914                                         OMAP_DSS_UPDATE_AUTO);
1915                 if (def_display->enable_te)
1916                         def_display->enable_te(def_display, 1);
1917 #else
1918                 if (def_display->set_update_mode)
1919                         def_display->set_update_mode(def_display,
1920                                         OMAP_DSS_UPDATE_MANUAL);
1921                 if (def_display->enable_te)
1922                         def_display->enable_te(def_display, 0);
1923 #endif
1924         } else {
1925                 if (def_display->set_update_mode)
1926                         def_display->set_update_mode(def_display,
1927                                         OMAP_DSS_UPDATE_AUTO);
1928         }
1929
1930         for (i = 0; i < fbdev->num_displays; i++) {
1931                 struct omap_display *display = fbdev->displays[i];
1932                 u16 w, h;
1933
1934                 if (!display->get_update_mode || !display->update)
1935                         continue;
1936
1937                 if (display->get_update_mode(display) ==
1938                                 OMAP_DSS_UPDATE_MANUAL) {
1939
1940                         display->get_resolution(display, &w, &h);
1941                         display->update(display, 0, 0, w, h);
1942                 }
1943         }
1944
1945         DBG("display->updated\n");
1946
1947         return 0;
1948
1949 cleanup:
1950         omapfb_free_resources(fbdev);
1951 err0:
1952         dev_err(&pdev->dev, "failed to setup omapfb\n");
1953         return r;
1954 }
1955
1956 static int omapfb_remove(struct platform_device *pdev)
1957 {
1958         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
1959
1960         /* FIXME: wait till completion of pending events */
1961
1962         omapfb_remove_sysfs(fbdev);
1963
1964         omapfb_free_resources(fbdev);
1965
1966         return 0;
1967 }
1968
1969 static struct platform_driver omapfb_driver = {
1970         .probe          = omapfb_probe,
1971         .remove         = omapfb_remove,
1972         .driver         = {
1973                 .name   = "omapfb",
1974                 .owner  = THIS_MODULE,
1975         },
1976 };
1977
1978 static int __init omapfb_init(void)
1979 {
1980         DBG("omapfb_init\n");
1981
1982         if (platform_driver_register(&omapfb_driver)) {
1983                 printk(KERN_ERR "failed to register omapfb driver\n");
1984                 return -ENODEV;
1985         }
1986
1987         return 0;
1988 }
1989
1990 static void __exit omapfb_exit(void)
1991 {
1992         DBG("omapfb_exit\n");
1993         platform_driver_unregister(&omapfb_driver);
1994 }
1995
1996 module_param_named(mode, def_mode, charp, 0);
1997 module_param_named(vram, def_vram, charp, 0);
1998 module_param_named(rotate, def_rotate, int, 0);
1999 module_param_named(vrfb, def_vrfb, bool, 0);
2000 module_param_named(mirror, def_mirror, bool, 0);
2001
2002 /* late_initcall to let panel/ctrl drivers loaded first.
2003  * I guess better option would be a more dynamic approach,
2004  * so that omapfb reacts to new panels when they are loaded */
2005 late_initcall(omapfb_init);
2006 /*module_init(omapfb_init);*/
2007 module_exit(omapfb_exit);
2008
2009 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2010 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2011 MODULE_LICENSE("GPL v2");