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 <video/omapvrfb.h> 35 36 #include "omapfb.h" 37 38 #define MODULE_NAME "omapfb" 39 40 #define OMAPFB_PLANE_XRES_MIN 8 41 #define OMAPFB_PLANE_YRES_MIN 8 42 43 static char *def_mode; 44 static char *def_vram; 45 static bool def_vrfb; 46 static int def_rotate; 47 static bool def_mirror; 48 static bool auto_update; 49 static unsigned int auto_update_freq; 50 module_param(auto_update, bool, 0); 51 module_param(auto_update_freq, uint, 0644); 52 53 #ifdef DEBUG 54 bool omapfb_debug; 55 module_param_named(debug, omapfb_debug, bool, 0644); 56 static bool omapfb_test_pattern; 57 module_param_named(test, omapfb_test_pattern, bool, 0644); 58 #endif 59 60 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi); 61 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev, 62 struct omap_dss_device *dssdev); 63 64 #ifdef DEBUG 65 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color) 66 { 67 struct fb_var_screeninfo *var = &fbi->var; 68 struct fb_fix_screeninfo *fix = &fbi->fix; 69 void __iomem *addr = fbi->screen_base; 70 const unsigned bytespp = var->bits_per_pixel >> 3; 71 const unsigned line_len = fix->line_length / bytespp; 72 73 int r = (color >> 16) & 0xff; 74 int g = (color >> 8) & 0xff; 75 int b = (color >> 0) & 0xff; 76 77 if (var->bits_per_pixel == 16) { 78 u16 __iomem *p = (u16 __iomem *)addr; 79 p += y * line_len + x; 80 81 r = r * 32 / 256; 82 g = g * 64 / 256; 83 b = b * 32 / 256; 84 85 __raw_writew((r << 11) | (g << 5) | (b << 0), p); 86 } else if (var->bits_per_pixel == 24) { 87 u8 __iomem *p = (u8 __iomem *)addr; 88 p += (y * line_len + x) * 3; 89 90 __raw_writeb(b, p + 0); 91 __raw_writeb(g, p + 1); 92 __raw_writeb(r, p + 2); 93 } else if (var->bits_per_pixel == 32) { 94 u32 __iomem *p = (u32 __iomem *)addr; 95 p += y * line_len + x; 96 __raw_writel(color, p); 97 } 98 } 99 100 static void fill_fb(struct fb_info *fbi) 101 { 102 struct fb_var_screeninfo *var = &fbi->var; 103 const short w = var->xres_virtual; 104 const short h = var->yres_virtual; 105 void __iomem *addr = fbi->screen_base; 106 int y, x; 107 108 if (!addr) 109 return; 110 111 DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length); 112 113 for (y = 0; y < h; y++) { 114 for (x = 0; x < w; x++) { 115 if (x < 20 && y < 20) 116 draw_pixel(fbi, x, y, 0xffffff); 117 else if (x < 20 && (y > 20 && y < h - 20)) 118 draw_pixel(fbi, x, y, 0xff); 119 else if (y < 20 && (x > 20 && x < w - 20)) 120 draw_pixel(fbi, x, y, 0xff00); 121 else if (x > w - 20 && (y > 20 && y < h - 20)) 122 draw_pixel(fbi, x, y, 0xff0000); 123 else if (y > h - 20 && (x > 20 && x < w - 20)) 124 draw_pixel(fbi, x, y, 0xffff00); 125 else if (x == 20 || x == w - 20 || 126 y == 20 || y == h - 20) 127 draw_pixel(fbi, x, y, 0xffffff); 128 else if (x == y || w - x == h - y) 129 draw_pixel(fbi, x, y, 0xff00ff); 130 else if (w - x == y || x == h - y) 131 draw_pixel(fbi, x, y, 0x00ffff); 132 else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) { 133 int t = x * 3 / w; 134 unsigned r = 0, g = 0, b = 0; 135 unsigned c; 136 if (var->bits_per_pixel == 16) { 137 if (t == 0) 138 b = (y % 32) * 256 / 32; 139 else if (t == 1) 140 g = (y % 64) * 256 / 64; 141 else if (t == 2) 142 r = (y % 32) * 256 / 32; 143 } else { 144 if (t == 0) 145 b = (y % 256); 146 else if (t == 1) 147 g = (y % 256); 148 else if (t == 2) 149 r = (y % 256); 150 } 151 c = (r << 16) | (g << 8) | (b << 0); 152 draw_pixel(fbi, x, y, c); 153 } else { 154 draw_pixel(fbi, x, y, 0); 155 } 156 } 157 } 158 } 159 #endif 160 161 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot) 162 { 163 const struct vrfb *vrfb = &ofbi->region->vrfb; 164 unsigned offset; 165 166 switch (rot) { 167 case FB_ROTATE_UR: 168 offset = 0; 169 break; 170 case FB_ROTATE_CW: 171 offset = vrfb->yoffset; 172 break; 173 case FB_ROTATE_UD: 174 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset; 175 break; 176 case FB_ROTATE_CCW: 177 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN; 178 break; 179 default: 180 BUG(); 181 return 0; 182 } 183 184 offset *= vrfb->bytespp; 185 186 return offset; 187 } 188 189 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot) 190 { 191 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { 192 return ofbi->region->vrfb.paddr[rot] 193 + omapfb_get_vrfb_offset(ofbi, rot); 194 } else { 195 return ofbi->region->paddr; 196 } 197 } 198 199 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi) 200 { 201 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) 202 return ofbi->region->vrfb.paddr[0]; 203 else 204 return ofbi->region->paddr; 205 } 206 207 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi) 208 { 209 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) 210 return ofbi->region->vrfb.vaddr[0]; 211 else 212 return ofbi->region->vaddr; 213 } 214 215 static struct omapfb_colormode omapfb_colormodes[] = { 216 { 217 .dssmode = OMAP_DSS_COLOR_UYVY, 218 .bits_per_pixel = 16, 219 .nonstd = OMAPFB_COLOR_YUV422, 220 }, { 221 .dssmode = OMAP_DSS_COLOR_YUV2, 222 .bits_per_pixel = 16, 223 .nonstd = OMAPFB_COLOR_YUY422, 224 }, { 225 .dssmode = OMAP_DSS_COLOR_ARGB16, 226 .bits_per_pixel = 16, 227 .red = { .length = 4, .offset = 8, .msb_right = 0 }, 228 .green = { .length = 4, .offset = 4, .msb_right = 0 }, 229 .blue = { .length = 4, .offset = 0, .msb_right = 0 }, 230 .transp = { .length = 4, .offset = 12, .msb_right = 0 }, 231 }, { 232 .dssmode = OMAP_DSS_COLOR_RGB16, 233 .bits_per_pixel = 16, 234 .red = { .length = 5, .offset = 11, .msb_right = 0 }, 235 .green = { .length = 6, .offset = 5, .msb_right = 0 }, 236 .blue = { .length = 5, .offset = 0, .msb_right = 0 }, 237 .transp = { .length = 0, .offset = 0, .msb_right = 0 }, 238 }, { 239 .dssmode = OMAP_DSS_COLOR_RGB24P, 240 .bits_per_pixel = 24, 241 .red = { .length = 8, .offset = 16, .msb_right = 0 }, 242 .green = { .length = 8, .offset = 8, .msb_right = 0 }, 243 .blue = { .length = 8, .offset = 0, .msb_right = 0 }, 244 .transp = { .length = 0, .offset = 0, .msb_right = 0 }, 245 }, { 246 .dssmode = OMAP_DSS_COLOR_RGB24U, 247 .bits_per_pixel = 32, 248 .red = { .length = 8, .offset = 16, .msb_right = 0 }, 249 .green = { .length = 8, .offset = 8, .msb_right = 0 }, 250 .blue = { .length = 8, .offset = 0, .msb_right = 0 }, 251 .transp = { .length = 0, .offset = 0, .msb_right = 0 }, 252 }, { 253 .dssmode = OMAP_DSS_COLOR_ARGB32, 254 .bits_per_pixel = 32, 255 .red = { .length = 8, .offset = 16, .msb_right = 0 }, 256 .green = { .length = 8, .offset = 8, .msb_right = 0 }, 257 .blue = { .length = 8, .offset = 0, .msb_right = 0 }, 258 .transp = { .length = 8, .offset = 24, .msb_right = 0 }, 259 }, { 260 .dssmode = OMAP_DSS_COLOR_RGBA32, 261 .bits_per_pixel = 32, 262 .red = { .length = 8, .offset = 24, .msb_right = 0 }, 263 .green = { .length = 8, .offset = 16, .msb_right = 0 }, 264 .blue = { .length = 8, .offset = 8, .msb_right = 0 }, 265 .transp = { .length = 8, .offset = 0, .msb_right = 0 }, 266 }, { 267 .dssmode = OMAP_DSS_COLOR_RGBX32, 268 .bits_per_pixel = 32, 269 .red = { .length = 8, .offset = 24, .msb_right = 0 }, 270 .green = { .length = 8, .offset = 16, .msb_right = 0 }, 271 .blue = { .length = 8, .offset = 8, .msb_right = 0 }, 272 .transp = { .length = 0, .offset = 0, .msb_right = 0 }, 273 }, 274 }; 275 276 static bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2) 277 { 278 return f1->length == f2->length && 279 f1->offset == f2->offset && 280 f1->msb_right == f2->msb_right; 281 } 282 283 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var, 284 struct omapfb_colormode *color) 285 { 286 if (var->bits_per_pixel == 0 || 287 var->red.length == 0 || 288 var->blue.length == 0 || 289 var->green.length == 0) 290 return 0; 291 292 return var->bits_per_pixel == color->bits_per_pixel && 293 cmp_component(&var->red, &color->red) && 294 cmp_component(&var->green, &color->green) && 295 cmp_component(&var->blue, &color->blue) && 296 cmp_component(&var->transp, &color->transp); 297 } 298 299 static void assign_colormode_to_var(struct fb_var_screeninfo *var, 300 struct omapfb_colormode *color) 301 { 302 var->bits_per_pixel = color->bits_per_pixel; 303 var->nonstd = color->nonstd; 304 var->red = color->red; 305 var->green = color->green; 306 var->blue = color->blue; 307 var->transp = color->transp; 308 } 309 310 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var, 311 enum omap_color_mode *mode) 312 { 313 enum omap_color_mode dssmode; 314 int i; 315 316 /* first match with nonstd field */ 317 if (var->nonstd) { 318 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) { 319 struct omapfb_colormode *m = &omapfb_colormodes[i]; 320 if (var->nonstd == m->nonstd) { 321 assign_colormode_to_var(var, m); 322 *mode = m->dssmode; 323 return 0; 324 } 325 } 326 327 return -EINVAL; 328 } 329 330 /* then try exact match of bpp and colors */ 331 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) { 332 struct omapfb_colormode *m = &omapfb_colormodes[i]; 333 if (cmp_var_to_colormode(var, m)) { 334 assign_colormode_to_var(var, m); 335 *mode = m->dssmode; 336 return 0; 337 } 338 } 339 340 /* match with bpp if user has not filled color fields 341 * properly */ 342 switch (var->bits_per_pixel) { 343 case 1: 344 dssmode = OMAP_DSS_COLOR_CLUT1; 345 break; 346 case 2: 347 dssmode = OMAP_DSS_COLOR_CLUT2; 348 break; 349 case 4: 350 dssmode = OMAP_DSS_COLOR_CLUT4; 351 break; 352 case 8: 353 dssmode = OMAP_DSS_COLOR_CLUT8; 354 break; 355 case 12: 356 dssmode = OMAP_DSS_COLOR_RGB12U; 357 break; 358 case 16: 359 dssmode = OMAP_DSS_COLOR_RGB16; 360 break; 361 case 24: 362 dssmode = OMAP_DSS_COLOR_RGB24P; 363 break; 364 case 32: 365 dssmode = OMAP_DSS_COLOR_RGB24U; 366 break; 367 default: 368 return -EINVAL; 369 } 370 371 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) { 372 struct omapfb_colormode *m = &omapfb_colormodes[i]; 373 if (dssmode == m->dssmode) { 374 assign_colormode_to_var(var, m); 375 *mode = m->dssmode; 376 return 0; 377 } 378 } 379 380 return -EINVAL; 381 } 382 383 static int check_fb_res_bounds(struct fb_var_screeninfo *var) 384 { 385 int xres_min = OMAPFB_PLANE_XRES_MIN; 386 int xres_max = 2048; 387 int yres_min = OMAPFB_PLANE_YRES_MIN; 388 int yres_max = 2048; 389 390 /* XXX: some applications seem to set virtual res to 0. */ 391 if (var->xres_virtual == 0) 392 var->xres_virtual = var->xres; 393 394 if (var->yres_virtual == 0) 395 var->yres_virtual = var->yres; 396 397 if (var->xres_virtual < xres_min || var->yres_virtual < yres_min) 398 return -EINVAL; 399 400 if (var->xres < xres_min) 401 var->xres = xres_min; 402 if (var->yres < yres_min) 403 var->yres = yres_min; 404 if (var->xres > xres_max) 405 var->xres = xres_max; 406 if (var->yres > yres_max) 407 var->yres = yres_max; 408 409 if (var->xres > var->xres_virtual) 410 var->xres = var->xres_virtual; 411 if (var->yres > var->yres_virtual) 412 var->yres = var->yres_virtual; 413 414 return 0; 415 } 416 417 static void shrink_height(unsigned long max_frame_size, 418 struct fb_var_screeninfo *var) 419 { 420 DBG("can't fit FB into memory, reducing y\n"); 421 var->yres_virtual = max_frame_size / 422 (var->xres_virtual * var->bits_per_pixel >> 3); 423 424 if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN) 425 var->yres_virtual = OMAPFB_PLANE_YRES_MIN; 426 427 if (var->yres > var->yres_virtual) 428 var->yres = var->yres_virtual; 429 } 430 431 static void shrink_width(unsigned long max_frame_size, 432 struct fb_var_screeninfo *var) 433 { 434 DBG("can't fit FB into memory, reducing x\n"); 435 var->xres_virtual = max_frame_size / var->yres_virtual / 436 (var->bits_per_pixel >> 3); 437 438 if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN) 439 var->xres_virtual = OMAPFB_PLANE_XRES_MIN; 440 441 if (var->xres > var->xres_virtual) 442 var->xres = var->xres_virtual; 443 } 444 445 static int check_vrfb_fb_size(unsigned long region_size, 446 const struct fb_var_screeninfo *var) 447 { 448 unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual, 449 var->yres_virtual, var->bits_per_pixel >> 3); 450 451 return min_phys_size > region_size ? -EINVAL : 0; 452 } 453 454 static int check_fb_size(const struct omapfb_info *ofbi, 455 struct fb_var_screeninfo *var) 456 { 457 unsigned long max_frame_size = ofbi->region->size; 458 int bytespp = var->bits_per_pixel >> 3; 459 unsigned long line_size = var->xres_virtual * bytespp; 460 461 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { 462 /* One needs to check for both VRFB and OMAPFB limitations. */ 463 if (check_vrfb_fb_size(max_frame_size, var)) 464 shrink_height(omap_vrfb_max_height( 465 max_frame_size, var->xres_virtual, bytespp) * 466 line_size, var); 467 468 if (check_vrfb_fb_size(max_frame_size, var)) { 469 DBG("cannot fit FB to memory\n"); 470 return -EINVAL; 471 } 472 473 return 0; 474 } 475 476 DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size); 477 478 if (line_size * var->yres_virtual > max_frame_size) 479 shrink_height(max_frame_size, var); 480 481 if (line_size * var->yres_virtual > max_frame_size) { 482 shrink_width(max_frame_size, var); 483 line_size = var->xres_virtual * bytespp; 484 } 485 486 if (line_size * var->yres_virtual > max_frame_size) { 487 DBG("cannot fit FB to memory\n"); 488 return -EINVAL; 489 } 490 491 return 0; 492 } 493 494 /* 495 * Consider if VRFB assisted rotation is in use and if the virtual space for 496 * the zero degree view needs to be mapped. The need for mapping also acts as 497 * the trigger for setting up the hardware on the context in question. This 498 * ensures that one does not attempt to access the virtual view before the 499 * hardware is serving the address translations. 500 */ 501 static int setup_vrfb_rotation(struct fb_info *fbi) 502 { 503 struct omapfb_info *ofbi = FB2OFB(fbi); 504 struct omapfb2_mem_region *rg = ofbi->region; 505 struct vrfb *vrfb = &rg->vrfb; 506 struct fb_var_screeninfo *var = &fbi->var; 507 struct fb_fix_screeninfo *fix = &fbi->fix; 508 unsigned bytespp; 509 bool yuv_mode; 510 enum omap_color_mode mode; 511 int r; 512 bool reconf; 513 514 if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB) 515 return 0; 516 517 DBG("setup_vrfb_rotation\n"); 518 519 r = fb_mode_to_dss_mode(var, &mode); 520 if (r) 521 return r; 522 523 bytespp = var->bits_per_pixel >> 3; 524 525 yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY; 526 527 /* We need to reconfigure VRFB if the resolution changes, if yuv mode 528 * is enabled/disabled, or if bytes per pixel changes */ 529 530 /* XXX we shouldn't allow this when framebuffer is mmapped */ 531 532 reconf = false; 533 534 if (yuv_mode != vrfb->yuv_mode) 535 reconf = true; 536 else if (bytespp != vrfb->bytespp) 537 reconf = true; 538 else if (vrfb->xres != var->xres_virtual || 539 vrfb->yres != var->yres_virtual) 540 reconf = true; 541 542 if (vrfb->vaddr[0] && reconf) { 543 fbi->screen_base = NULL; 544 fix->smem_start = 0; 545 fix->smem_len = 0; 546 iounmap(vrfb->vaddr[0]); 547 vrfb->vaddr[0] = NULL; 548 DBG("setup_vrfb_rotation: reset fb\n"); 549 } 550 551 if (vrfb->vaddr[0]) 552 return 0; 553 554 omap_vrfb_setup(&rg->vrfb, rg->paddr, 555 var->xres_virtual, 556 var->yres_virtual, 557 bytespp, yuv_mode); 558 559 /* Now one can ioremap the 0 angle view */ 560 r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0); 561 if (r) 562 return r; 563 564 /* used by open/write in fbmem.c */ 565 fbi->screen_base = ofbi->region->vrfb.vaddr[0]; 566 567 fix->smem_start = ofbi->region->vrfb.paddr[0]; 568 569 switch (var->nonstd) { 570 case OMAPFB_COLOR_YUV422: 571 case OMAPFB_COLOR_YUY422: 572 fix->line_length = 573 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2; 574 break; 575 default: 576 fix->line_length = 577 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3; 578 break; 579 } 580 581 fix->smem_len = var->yres_virtual * fix->line_length; 582 583 return 0; 584 } 585 586 int dss_mode_to_fb_mode(enum omap_color_mode dssmode, 587 struct fb_var_screeninfo *var) 588 { 589 int i; 590 591 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) { 592 struct omapfb_colormode *mode = &omapfb_colormodes[i]; 593 if (dssmode == mode->dssmode) { 594 assign_colormode_to_var(var, mode); 595 return 0; 596 } 597 } 598 return -ENOENT; 599 } 600 601 void set_fb_fix(struct fb_info *fbi) 602 { 603 struct fb_fix_screeninfo *fix = &fbi->fix; 604 struct fb_var_screeninfo *var = &fbi->var; 605 struct omapfb_info *ofbi = FB2OFB(fbi); 606 struct omapfb2_mem_region *rg = ofbi->region; 607 608 DBG("set_fb_fix\n"); 609 610 /* used by open/write in fbmem.c */ 611 fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi); 612 613 /* used by mmap in fbmem.c */ 614 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { 615 switch (var->nonstd) { 616 case OMAPFB_COLOR_YUV422: 617 case OMAPFB_COLOR_YUY422: 618 fix->line_length = 619 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2; 620 break; 621 default: 622 fix->line_length = 623 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3; 624 break; 625 } 626 627 fix->smem_len = var->yres_virtual * fix->line_length; 628 } else { 629 fix->line_length = 630 (var->xres_virtual * var->bits_per_pixel) >> 3; 631 fix->smem_len = rg->size; 632 } 633 634 fix->smem_start = omapfb_get_region_paddr(ofbi); 635 636 fix->type = FB_TYPE_PACKED_PIXELS; 637 638 if (var->nonstd) 639 fix->visual = FB_VISUAL_PSEUDOCOLOR; 640 else { 641 switch (var->bits_per_pixel) { 642 case 32: 643 case 24: 644 case 16: 645 case 12: 646 fix->visual = FB_VISUAL_TRUECOLOR; 647 /* 12bpp is stored in 16 bits */ 648 break; 649 case 1: 650 case 2: 651 case 4: 652 case 8: 653 fix->visual = FB_VISUAL_PSEUDOCOLOR; 654 break; 655 } 656 } 657 658 fix->accel = FB_ACCEL_NONE; 659 660 fix->xpanstep = 1; 661 fix->ypanstep = 1; 662 } 663 664 /* check new var and possibly modify it to be ok */ 665 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var) 666 { 667 struct omapfb_info *ofbi = FB2OFB(fbi); 668 struct omap_dss_device *display = fb2display(fbi); 669 enum omap_color_mode mode = 0; 670 int i; 671 int r; 672 673 DBG("check_fb_var %d\n", ofbi->id); 674 675 WARN_ON(!atomic_read(&ofbi->region->lock_count)); 676 677 r = fb_mode_to_dss_mode(var, &mode); 678 if (r) { 679 DBG("cannot convert var to omap dss mode\n"); 680 return r; 681 } 682 683 for (i = 0; i < ofbi->num_overlays; ++i) { 684 if ((ofbi->overlays[i]->supported_modes & mode) == 0) { 685 DBG("invalid mode\n"); 686 return -EINVAL; 687 } 688 } 689 690 if (var->rotate > 3) 691 return -EINVAL; 692 693 if (check_fb_res_bounds(var)) 694 return -EINVAL; 695 696 /* When no memory is allocated ignore the size check */ 697 if (ofbi->region->size != 0 && check_fb_size(ofbi, var)) 698 return -EINVAL; 699 700 if (var->xres + var->xoffset > var->xres_virtual) 701 var->xoffset = var->xres_virtual - var->xres; 702 if (var->yres + var->yoffset > var->yres_virtual) 703 var->yoffset = var->yres_virtual - var->yres; 704 705 DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n", 706 var->xres, var->yres, 707 var->xres_virtual, var->yres_virtual); 708 709 if (display && display->driver->get_dimensions) { 710 u32 w, h; 711 display->driver->get_dimensions(display, &w, &h); 712 var->width = DIV_ROUND_CLOSEST(w, 1000); 713 var->height = DIV_ROUND_CLOSEST(h, 1000); 714 } else { 715 var->height = -1; 716 var->width = -1; 717 } 718 719 var->grayscale = 0; 720 721 if (display && display->driver->get_timings) { 722 struct omap_video_timings timings; 723 display->driver->get_timings(display, &timings); 724 725 /* pixclock in ps, the rest in pixclock */ 726 var->pixclock = timings.pixelclock != 0 ? 727 KHZ2PICOS(timings.pixelclock / 1000) : 728 0; 729 var->left_margin = timings.hbp; 730 var->right_margin = timings.hfp; 731 var->upper_margin = timings.vbp; 732 var->lower_margin = timings.vfp; 733 var->hsync_len = timings.hsw; 734 var->vsync_len = timings.vsw; 735 var->sync |= timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH ? 736 FB_SYNC_HOR_HIGH_ACT : 0; 737 var->sync |= timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH ? 738 FB_SYNC_VERT_HIGH_ACT : 0; 739 var->vmode = timings.interlace ? 740 FB_VMODE_INTERLACED : FB_VMODE_NONINTERLACED; 741 } else { 742 var->pixclock = 0; 743 var->left_margin = 0; 744 var->right_margin = 0; 745 var->upper_margin = 0; 746 var->lower_margin = 0; 747 var->hsync_len = 0; 748 var->vsync_len = 0; 749 var->sync = 0; 750 var->vmode = FB_VMODE_NONINTERLACED; 751 } 752 753 return 0; 754 } 755 756 /* 757 * --------------------------------------------------------------------------- 758 * fbdev framework callbacks 759 * --------------------------------------------------------------------------- 760 */ 761 static int omapfb_open(struct fb_info *fbi, int user) 762 { 763 return 0; 764 } 765 766 static int omapfb_release(struct fb_info *fbi, int user) 767 { 768 return 0; 769 } 770 771 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var, 772 const struct fb_fix_screeninfo *fix, int rotation) 773 { 774 unsigned offset; 775 776 offset = var->yoffset * fix->line_length + 777 var->xoffset * (var->bits_per_pixel >> 3); 778 779 return offset; 780 } 781 782 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var, 783 const struct fb_fix_screeninfo *fix, int rotation) 784 { 785 unsigned offset; 786 787 if (rotation == FB_ROTATE_UD) 788 offset = (var->yres_virtual - var->yres) * 789 fix->line_length; 790 else if (rotation == FB_ROTATE_CW) 791 offset = (var->yres_virtual - var->yres) * 792 (var->bits_per_pixel >> 3); 793 else 794 offset = 0; 795 796 if (rotation == FB_ROTATE_UR) 797 offset += var->yoffset * fix->line_length + 798 var->xoffset * (var->bits_per_pixel >> 3); 799 else if (rotation == FB_ROTATE_UD) 800 offset -= var->yoffset * fix->line_length + 801 var->xoffset * (var->bits_per_pixel >> 3); 802 else if (rotation == FB_ROTATE_CW) 803 offset -= var->xoffset * fix->line_length + 804 var->yoffset * (var->bits_per_pixel >> 3); 805 else if (rotation == FB_ROTATE_CCW) 806 offset += var->xoffset * fix->line_length + 807 var->yoffset * (var->bits_per_pixel >> 3); 808 809 return offset; 810 } 811 812 static void omapfb_calc_addr(const struct omapfb_info *ofbi, 813 const struct fb_var_screeninfo *var, 814 const struct fb_fix_screeninfo *fix, 815 int rotation, u32 *paddr) 816 { 817 u32 data_start_p; 818 int offset; 819 820 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) 821 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation); 822 else 823 data_start_p = omapfb_get_region_paddr(ofbi); 824 825 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) 826 offset = calc_rotation_offset_vrfb(var, fix, rotation); 827 else 828 offset = calc_rotation_offset_dma(var, fix, rotation); 829 830 data_start_p += offset; 831 832 if (offset) 833 DBG("offset %d, %d = %d\n", 834 var->xoffset, var->yoffset, offset); 835 836 DBG("paddr %x\n", data_start_p); 837 838 *paddr = data_start_p; 839 } 840 841 /* setup overlay according to the fb */ 842 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl, 843 u16 posx, u16 posy, u16 outw, u16 outh) 844 { 845 int r = 0; 846 struct omapfb_info *ofbi = FB2OFB(fbi); 847 struct fb_var_screeninfo *var = &fbi->var; 848 struct fb_fix_screeninfo *fix = &fbi->fix; 849 enum omap_color_mode mode = 0; 850 u32 data_start_p = 0; 851 struct omap_overlay_info info; 852 int xres, yres; 853 int screen_width; 854 int mirror; 855 int rotation = var->rotate; 856 int i; 857 858 WARN_ON(!atomic_read(&ofbi->region->lock_count)); 859 860 for (i = 0; i < ofbi->num_overlays; i++) { 861 if (ovl != ofbi->overlays[i]) 862 continue; 863 864 rotation = (rotation + ofbi->rotation[i]) % 4; 865 break; 866 } 867 868 DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id, 869 posx, posy, outw, outh); 870 871 if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) { 872 xres = var->yres; 873 yres = var->xres; 874 } else { 875 xres = var->xres; 876 yres = var->yres; 877 } 878 879 if (ofbi->region->size) 880 omapfb_calc_addr(ofbi, var, fix, rotation, &data_start_p); 881 882 r = fb_mode_to_dss_mode(var, &mode); 883 if (r) { 884 DBG("fb_mode_to_dss_mode failed"); 885 goto err; 886 } 887 888 switch (var->nonstd) { 889 case OMAPFB_COLOR_YUV422: 890 case OMAPFB_COLOR_YUY422: 891 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { 892 screen_width = fix->line_length 893 / (var->bits_per_pixel >> 2); 894 break; 895 } 896 default: 897 screen_width = fix->line_length / (var->bits_per_pixel >> 3); 898 break; 899 } 900 901 ovl->get_overlay_info(ovl, &info); 902 903 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) 904 mirror = 0; 905 else 906 mirror = ofbi->mirror; 907 908 info.paddr = data_start_p; 909 info.screen_width = screen_width; 910 info.width = xres; 911 info.height = yres; 912 info.color_mode = mode; 913 info.rotation_type = ofbi->rotation_type; 914 info.rotation = rotation; 915 info.mirror = mirror; 916 917 info.pos_x = posx; 918 info.pos_y = posy; 919 info.out_width = outw; 920 info.out_height = outh; 921 922 r = ovl->set_overlay_info(ovl, &info); 923 if (r) { 924 DBG("ovl->setup_overlay_info failed\n"); 925 goto err; 926 } 927 928 return 0; 929 930 err: 931 DBG("setup_overlay failed\n"); 932 return r; 933 } 934 935 /* apply var to the overlay */ 936 int omapfb_apply_changes(struct fb_info *fbi, int init) 937 { 938 int r = 0; 939 struct omapfb_info *ofbi = FB2OFB(fbi); 940 struct fb_var_screeninfo *var = &fbi->var; 941 struct omap_overlay *ovl; 942 u16 posx, posy; 943 u16 outw, outh; 944 int i; 945 946 #ifdef DEBUG 947 if (omapfb_test_pattern) 948 fill_fb(fbi); 949 #endif 950 951 WARN_ON(!atomic_read(&ofbi->region->lock_count)); 952 953 for (i = 0; i < ofbi->num_overlays; i++) { 954 ovl = ofbi->overlays[i]; 955 956 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id); 957 958 if (ofbi->region->size == 0) { 959 /* the fb is not available. disable the overlay */ 960 omapfb_overlay_enable(ovl, 0); 961 if (!init && ovl->manager) 962 ovl->manager->apply(ovl->manager); 963 continue; 964 } 965 966 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) { 967 int rotation = (var->rotate + ofbi->rotation[i]) % 4; 968 if (rotation == FB_ROTATE_CW || 969 rotation == FB_ROTATE_CCW) { 970 outw = var->yres; 971 outh = var->xres; 972 } else { 973 outw = var->xres; 974 outh = var->yres; 975 } 976 } else { 977 struct omap_overlay_info info; 978 ovl->get_overlay_info(ovl, &info); 979 outw = info.out_width; 980 outh = info.out_height; 981 } 982 983 if (init) { 984 posx = 0; 985 posy = 0; 986 } else { 987 struct omap_overlay_info info; 988 ovl->get_overlay_info(ovl, &info); 989 posx = info.pos_x; 990 posy = info.pos_y; 991 } 992 993 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh); 994 if (r) 995 goto err; 996 997 if (!init && ovl->manager) 998 ovl->manager->apply(ovl->manager); 999 } 1000 return 0; 1001 err: 1002 DBG("apply_changes failed\n"); 1003 return r; 1004 } 1005 1006 /* checks var and eventually tweaks it to something supported, 1007 * DO NOT MODIFY PAR */ 1008 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) 1009 { 1010 struct omapfb_info *ofbi = FB2OFB(fbi); 1011 int r; 1012 1013 DBG("check_var(%d)\n", FB2OFB(fbi)->id); 1014 1015 omapfb_get_mem_region(ofbi->region); 1016 1017 r = check_fb_var(fbi, var); 1018 1019 omapfb_put_mem_region(ofbi->region); 1020 1021 return r; 1022 } 1023 1024 /* set the video mode according to info->var */ 1025 static int omapfb_set_par(struct fb_info *fbi) 1026 { 1027 struct omapfb_info *ofbi = FB2OFB(fbi); 1028 int r; 1029 1030 DBG("set_par(%d)\n", FB2OFB(fbi)->id); 1031 1032 omapfb_get_mem_region(ofbi->region); 1033 1034 set_fb_fix(fbi); 1035 1036 r = setup_vrfb_rotation(fbi); 1037 if (r) 1038 goto out; 1039 1040 r = omapfb_apply_changes(fbi, 0); 1041 1042 out: 1043 omapfb_put_mem_region(ofbi->region); 1044 1045 return r; 1046 } 1047 1048 static int omapfb_pan_display(struct fb_var_screeninfo *var, 1049 struct fb_info *fbi) 1050 { 1051 struct omapfb_info *ofbi = FB2OFB(fbi); 1052 struct fb_var_screeninfo new_var; 1053 int r; 1054 1055 DBG("pan_display(%d)\n", FB2OFB(fbi)->id); 1056 1057 if (var->xoffset == fbi->var.xoffset && 1058 var->yoffset == fbi->var.yoffset) 1059 return 0; 1060 1061 new_var = fbi->var; 1062 new_var.xoffset = var->xoffset; 1063 new_var.yoffset = var->yoffset; 1064 1065 fbi->var = new_var; 1066 1067 omapfb_get_mem_region(ofbi->region); 1068 1069 r = omapfb_apply_changes(fbi, 0); 1070 1071 omapfb_put_mem_region(ofbi->region); 1072 1073 return r; 1074 } 1075 1076 static void mmap_user_open(struct vm_area_struct *vma) 1077 { 1078 struct omapfb2_mem_region *rg = vma->vm_private_data; 1079 1080 omapfb_get_mem_region(rg); 1081 atomic_inc(&rg->map_count); 1082 omapfb_put_mem_region(rg); 1083 } 1084 1085 static void mmap_user_close(struct vm_area_struct *vma) 1086 { 1087 struct omapfb2_mem_region *rg = vma->vm_private_data; 1088 1089 omapfb_get_mem_region(rg); 1090 atomic_dec(&rg->map_count); 1091 omapfb_put_mem_region(rg); 1092 } 1093 1094 static struct vm_operations_struct mmap_user_ops = { 1095 .open = mmap_user_open, 1096 .close = mmap_user_close, 1097 }; 1098 1099 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma) 1100 { 1101 struct omapfb_info *ofbi = FB2OFB(fbi); 1102 struct fb_fix_screeninfo *fix = &fbi->fix; 1103 struct omapfb2_mem_region *rg; 1104 unsigned long start; 1105 u32 len; 1106 int r; 1107 1108 rg = omapfb_get_mem_region(ofbi->region); 1109 1110 start = omapfb_get_region_paddr(ofbi); 1111 len = fix->smem_len; 1112 1113 DBG("user mmap region start %lx, len %d, off %lx\n", start, len, 1114 vma->vm_pgoff << PAGE_SHIFT); 1115 1116 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 1117 vma->vm_ops = &mmap_user_ops; 1118 vma->vm_private_data = rg; 1119 1120 r = vm_iomap_memory(vma, start, len); 1121 if (r) 1122 goto error; 1123 1124 /* vm_ops.open won't be called for mmap itself. */ 1125 atomic_inc(&rg->map_count); 1126 1127 omapfb_put_mem_region(rg); 1128 1129 return 0; 1130 1131 error: 1132 omapfb_put_mem_region(ofbi->region); 1133 1134 return r; 1135 } 1136 1137 /* Store a single color palette entry into a pseudo palette or the hardware 1138 * palette if one is available. For now we support only 16bpp and thus store 1139 * the entry only to the pseudo palette. 1140 */ 1141 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green, 1142 u_int blue, u_int transp, int update_hw_pal) 1143 { 1144 /*struct omapfb_info *ofbi = FB2OFB(fbi);*/ 1145 /*struct omapfb2_device *fbdev = ofbi->fbdev;*/ 1146 struct fb_var_screeninfo *var = &fbi->var; 1147 int r = 0; 1148 1149 enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */ 1150 1151 /*switch (plane->color_mode) {*/ 1152 switch (mode) { 1153 case OMAPFB_COLOR_YUV422: 1154 case OMAPFB_COLOR_YUV420: 1155 case OMAPFB_COLOR_YUY422: 1156 r = -EINVAL; 1157 break; 1158 case OMAPFB_COLOR_CLUT_8BPP: 1159 case OMAPFB_COLOR_CLUT_4BPP: 1160 case OMAPFB_COLOR_CLUT_2BPP: 1161 case OMAPFB_COLOR_CLUT_1BPP: 1162 /* 1163 if (fbdev->ctrl->setcolreg) 1164 r = fbdev->ctrl->setcolreg(regno, red, green, blue, 1165 transp, update_hw_pal); 1166 */ 1167 /* Fallthrough */ 1168 r = -EINVAL; 1169 break; 1170 case OMAPFB_COLOR_RGB565: 1171 case OMAPFB_COLOR_RGB444: 1172 case OMAPFB_COLOR_RGB24P: 1173 case OMAPFB_COLOR_RGB24U: 1174 if (r != 0) 1175 break; 1176 1177 if (regno < 16) { 1178 u32 pal; 1179 pal = ((red >> (16 - var->red.length)) << 1180 var->red.offset) | 1181 ((green >> (16 - var->green.length)) << 1182 var->green.offset) | 1183 (blue >> (16 - var->blue.length)); 1184 ((u32 *)(fbi->pseudo_palette))[regno] = pal; 1185 } 1186 break; 1187 default: 1188 BUG(); 1189 } 1190 return r; 1191 } 1192 1193 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 1194 u_int transp, struct fb_info *info) 1195 { 1196 DBG("setcolreg\n"); 1197 1198 return _setcolreg(info, regno, red, green, blue, transp, 1); 1199 } 1200 1201 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info) 1202 { 1203 int count, index, r; 1204 u16 *red, *green, *blue, *transp; 1205 u16 trans = 0xffff; 1206 1207 DBG("setcmap\n"); 1208 1209 red = cmap->red; 1210 green = cmap->green; 1211 blue = cmap->blue; 1212 transp = cmap->transp; 1213 index = cmap->start; 1214 1215 for (count = 0; count < cmap->len; count++) { 1216 if (transp) 1217 trans = *transp++; 1218 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans, 1219 count == cmap->len - 1); 1220 if (r != 0) 1221 return r; 1222 } 1223 1224 return 0; 1225 } 1226 1227 static int omapfb_blank(int blank, struct fb_info *fbi) 1228 { 1229 struct omapfb_info *ofbi = FB2OFB(fbi); 1230 struct omapfb2_device *fbdev = ofbi->fbdev; 1231 struct omap_dss_device *display = fb2display(fbi); 1232 struct omapfb_display_data *d; 1233 int r = 0; 1234 1235 if (!display) 1236 return -EINVAL; 1237 1238 omapfb_lock(fbdev); 1239 1240 d = get_display_data(fbdev, display); 1241 1242 switch (blank) { 1243 case FB_BLANK_UNBLANK: 1244 if (display->state == OMAP_DSS_DISPLAY_ACTIVE) 1245 goto exit; 1246 1247 r = display->driver->enable(display); 1248 1249 if ((display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) && 1250 d->update_mode == OMAPFB_AUTO_UPDATE && 1251 !d->auto_update_work_enabled) 1252 omapfb_start_auto_update(fbdev, display); 1253 1254 break; 1255 1256 case FB_BLANK_NORMAL: 1257 /* FB_BLANK_NORMAL could be implemented. 1258 * Needs DSS additions. */ 1259 case FB_BLANK_VSYNC_SUSPEND: 1260 case FB_BLANK_HSYNC_SUSPEND: 1261 case FB_BLANK_POWERDOWN: 1262 if (display->state != OMAP_DSS_DISPLAY_ACTIVE) 1263 goto exit; 1264 1265 if (d->auto_update_work_enabled) 1266 omapfb_stop_auto_update(fbdev, display); 1267 1268 display->driver->disable(display); 1269 1270 break; 1271 1272 default: 1273 r = -EINVAL; 1274 } 1275 1276 exit: 1277 omapfb_unlock(fbdev); 1278 1279 return r; 1280 } 1281 1282 #if 0 1283 /* XXX fb_read and fb_write are needed for VRFB */ 1284 ssize_t omapfb_write(struct fb_info *info, const char __user *buf, 1285 size_t count, loff_t *ppos) 1286 { 1287 DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos); 1288 /* XXX needed for VRFB */ 1289 return count; 1290 } 1291 #endif 1292 1293 static struct fb_ops omapfb_ops = { 1294 .owner = THIS_MODULE, 1295 .fb_open = omapfb_open, 1296 .fb_release = omapfb_release, 1297 .fb_fillrect = cfb_fillrect, 1298 .fb_copyarea = cfb_copyarea, 1299 .fb_imageblit = cfb_imageblit, 1300 .fb_blank = omapfb_blank, 1301 .fb_ioctl = omapfb_ioctl, 1302 .fb_check_var = omapfb_check_var, 1303 .fb_set_par = omapfb_set_par, 1304 .fb_pan_display = omapfb_pan_display, 1305 .fb_mmap = omapfb_mmap, 1306 .fb_setcolreg = omapfb_setcolreg, 1307 .fb_setcmap = omapfb_setcmap, 1308 /*.fb_write = omapfb_write,*/ 1309 }; 1310 1311 static void omapfb_free_fbmem(struct fb_info *fbi) 1312 { 1313 struct omapfb_info *ofbi = FB2OFB(fbi); 1314 struct omapfb2_device *fbdev = ofbi->fbdev; 1315 struct omapfb2_mem_region *rg; 1316 1317 rg = ofbi->region; 1318 1319 if (rg->token == NULL) 1320 return; 1321 1322 WARN_ON(atomic_read(&rg->map_count)); 1323 1324 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { 1325 /* unmap the 0 angle rotation */ 1326 if (rg->vrfb.vaddr[0]) { 1327 iounmap(rg->vrfb.vaddr[0]); 1328 rg->vrfb.vaddr[0] = NULL; 1329 } 1330 1331 omap_vrfb_release_ctx(&rg->vrfb); 1332 } 1333 1334 dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle, 1335 &rg->attrs); 1336 1337 rg->token = NULL; 1338 rg->vaddr = NULL; 1339 rg->paddr = 0; 1340 rg->alloc = 0; 1341 rg->size = 0; 1342 } 1343 1344 static void clear_fb_info(struct fb_info *fbi) 1345 { 1346 memset(&fbi->var, 0, sizeof(fbi->var)); 1347 memset(&fbi->fix, 0, sizeof(fbi->fix)); 1348 strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id)); 1349 } 1350 1351 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev) 1352 { 1353 int i; 1354 1355 DBG("free all fbmem\n"); 1356 1357 for (i = 0; i < fbdev->num_fbs; i++) { 1358 struct fb_info *fbi = fbdev->fbs[i]; 1359 omapfb_free_fbmem(fbi); 1360 clear_fb_info(fbi); 1361 } 1362 1363 return 0; 1364 } 1365 1366 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size, 1367 unsigned long paddr) 1368 { 1369 struct omapfb_info *ofbi = FB2OFB(fbi); 1370 struct omapfb2_device *fbdev = ofbi->fbdev; 1371 struct omapfb2_mem_region *rg; 1372 void *token; 1373 DEFINE_DMA_ATTRS(attrs); 1374 dma_addr_t dma_handle; 1375 int r; 1376 1377 rg = ofbi->region; 1378 1379 rg->paddr = 0; 1380 rg->vaddr = NULL; 1381 memset(&rg->vrfb, 0, sizeof rg->vrfb); 1382 rg->size = 0; 1383 rg->type = 0; 1384 rg->alloc = false; 1385 rg->map = false; 1386 1387 size = PAGE_ALIGN(size); 1388 1389 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); 1390 1391 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) 1392 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs); 1393 1394 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id); 1395 1396 token = dma_alloc_attrs(fbdev->dev, size, &dma_handle, 1397 GFP_KERNEL, &attrs); 1398 1399 if (token == NULL) { 1400 dev_err(fbdev->dev, "failed to allocate framebuffer\n"); 1401 return -ENOMEM; 1402 } 1403 1404 DBG("allocated VRAM paddr %lx, vaddr %p\n", 1405 (unsigned long)dma_handle, token); 1406 1407 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { 1408 r = omap_vrfb_request_ctx(&rg->vrfb); 1409 if (r) { 1410 dma_free_attrs(fbdev->dev, size, token, dma_handle, 1411 &attrs); 1412 dev_err(fbdev->dev, "vrfb create ctx failed\n"); 1413 return r; 1414 } 1415 } 1416 1417 rg->attrs = attrs; 1418 rg->token = token; 1419 rg->dma_handle = dma_handle; 1420 1421 rg->paddr = (unsigned long)dma_handle; 1422 rg->vaddr = (void __iomem *)token; 1423 rg->size = size; 1424 rg->alloc = 1; 1425 1426 return 0; 1427 } 1428 1429 /* allocate fbmem using display resolution as reference */ 1430 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size, 1431 unsigned long paddr) 1432 { 1433 struct omapfb_info *ofbi = FB2OFB(fbi); 1434 struct omapfb2_device *fbdev = ofbi->fbdev; 1435 struct omap_dss_device *display; 1436 int bytespp; 1437 1438 display = fb2display(fbi); 1439 1440 if (!display) 1441 return 0; 1442 1443 switch (omapfb_get_recommended_bpp(fbdev, display)) { 1444 case 16: 1445 bytespp = 2; 1446 break; 1447 case 24: 1448 bytespp = 4; 1449 break; 1450 default: 1451 bytespp = 4; 1452 break; 1453 } 1454 1455 if (!size) { 1456 u16 w, h; 1457 1458 display->driver->get_resolution(display, &w, &h); 1459 1460 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) { 1461 size = max(omap_vrfb_min_phys_size(w, h, bytespp), 1462 omap_vrfb_min_phys_size(h, w, bytespp)); 1463 1464 DBG("adjusting fb mem size for VRFB, %u -> %lu\n", 1465 w * h * bytespp, size); 1466 } else { 1467 size = w * h * bytespp; 1468 } 1469 } 1470 1471 if (!size) 1472 return 0; 1473 1474 return omapfb_alloc_fbmem(fbi, size, paddr); 1475 } 1476 1477 static int omapfb_parse_vram_param(const char *param, int max_entries, 1478 unsigned long *sizes, unsigned long *paddrs) 1479 { 1480 int fbnum; 1481 unsigned long size; 1482 unsigned long paddr = 0; 1483 char *p, *start; 1484 1485 start = (char *)param; 1486 1487 while (1) { 1488 p = start; 1489 1490 fbnum = simple_strtoul(p, &p, 10); 1491 1492 if (p == start) 1493 return -EINVAL; 1494 1495 if (*p != ':') 1496 return -EINVAL; 1497 1498 if (fbnum >= max_entries) 1499 return -EINVAL; 1500 1501 size = memparse(p + 1, &p); 1502 1503 if (!size) 1504 return -EINVAL; 1505 1506 paddr = 0; 1507 1508 if (*p == '@') { 1509 paddr = simple_strtoul(p + 1, &p, 16); 1510 1511 if (!paddr) 1512 return -EINVAL; 1513 1514 } 1515 1516 WARN_ONCE(paddr, 1517 "reserving memory at predefined address not supported\n"); 1518 1519 paddrs[fbnum] = paddr; 1520 sizes[fbnum] = size; 1521 1522 if (*p == 0) 1523 break; 1524 1525 if (*p != ',') 1526 return -EINVAL; 1527 1528 ++p; 1529 1530 start = p; 1531 } 1532 1533 return 0; 1534 } 1535 1536 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev) 1537 { 1538 int i, r; 1539 unsigned long vram_sizes[10]; 1540 unsigned long vram_paddrs[10]; 1541 1542 memset(&vram_sizes, 0, sizeof(vram_sizes)); 1543 memset(&vram_paddrs, 0, sizeof(vram_paddrs)); 1544 1545 if (def_vram && omapfb_parse_vram_param(def_vram, 10, 1546 vram_sizes, vram_paddrs)) { 1547 dev_err(fbdev->dev, "failed to parse vram parameter\n"); 1548 1549 memset(&vram_sizes, 0, sizeof(vram_sizes)); 1550 memset(&vram_paddrs, 0, sizeof(vram_paddrs)); 1551 } 1552 1553 for (i = 0; i < fbdev->num_fbs; i++) { 1554 /* allocate memory automatically only for fb0, or if 1555 * excplicitly defined with vram or plat data option */ 1556 if (i == 0 || vram_sizes[i] != 0) { 1557 r = omapfb_alloc_fbmem_display(fbdev->fbs[i], 1558 vram_sizes[i], vram_paddrs[i]); 1559 1560 if (r) 1561 return r; 1562 } 1563 } 1564 1565 for (i = 0; i < fbdev->num_fbs; i++) { 1566 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]); 1567 struct omapfb2_mem_region *rg; 1568 rg = ofbi->region; 1569 1570 DBG("region%d phys %08x virt %p size=%lu\n", 1571 i, 1572 rg->paddr, 1573 rg->vaddr, 1574 rg->size); 1575 } 1576 1577 return 0; 1578 } 1579 1580 static void omapfb_clear_fb(struct fb_info *fbi) 1581 { 1582 const struct fb_fillrect rect = { 1583 .dx = 0, 1584 .dy = 0, 1585 .width = fbi->var.xres_virtual, 1586 .height = fbi->var.yres_virtual, 1587 .color = 0, 1588 .rop = ROP_COPY, 1589 }; 1590 1591 cfb_fillrect(fbi, &rect); 1592 } 1593 1594 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type) 1595 { 1596 struct omapfb_info *ofbi = FB2OFB(fbi); 1597 struct omapfb2_device *fbdev = ofbi->fbdev; 1598 struct omapfb2_mem_region *rg = ofbi->region; 1599 unsigned long old_size = rg->size; 1600 unsigned long old_paddr = rg->paddr; 1601 int old_type = rg->type; 1602 int r; 1603 1604 if (type != OMAPFB_MEMTYPE_SDRAM) 1605 return -EINVAL; 1606 1607 size = PAGE_ALIGN(size); 1608 1609 if (old_size == size && old_type == type) 1610 return 0; 1611 1612 omapfb_free_fbmem(fbi); 1613 1614 if (size == 0) { 1615 clear_fb_info(fbi); 1616 return 0; 1617 } 1618 1619 r = omapfb_alloc_fbmem(fbi, size, 0); 1620 1621 if (r) { 1622 if (old_size) 1623 omapfb_alloc_fbmem(fbi, old_size, old_paddr); 1624 1625 if (rg->size == 0) 1626 clear_fb_info(fbi); 1627 1628 return r; 1629 } 1630 1631 if (old_size == size) 1632 return 0; 1633 1634 if (old_size == 0) { 1635 DBG("initializing fb %d\n", ofbi->id); 1636 r = omapfb_fb_init(fbdev, fbi); 1637 if (r) { 1638 DBG("omapfb_fb_init failed\n"); 1639 goto err; 1640 } 1641 r = omapfb_apply_changes(fbi, 1); 1642 if (r) { 1643 DBG("omapfb_apply_changes failed\n"); 1644 goto err; 1645 } 1646 } else { 1647 struct fb_var_screeninfo new_var; 1648 memcpy(&new_var, &fbi->var, sizeof(new_var)); 1649 r = check_fb_var(fbi, &new_var); 1650 if (r) 1651 goto err; 1652 memcpy(&fbi->var, &new_var, sizeof(fbi->var)); 1653 set_fb_fix(fbi); 1654 r = setup_vrfb_rotation(fbi); 1655 if (r) 1656 goto err; 1657 } 1658 1659 omapfb_clear_fb(fbi); 1660 1661 return 0; 1662 err: 1663 omapfb_free_fbmem(fbi); 1664 clear_fb_info(fbi); 1665 return r; 1666 } 1667 1668 static void omapfb_auto_update_work(struct work_struct *work) 1669 { 1670 struct omap_dss_device *dssdev; 1671 struct omap_dss_driver *dssdrv; 1672 struct omapfb_display_data *d; 1673 u16 w, h; 1674 unsigned int freq; 1675 struct omapfb2_device *fbdev; 1676 1677 d = container_of(work, struct omapfb_display_data, 1678 auto_update_work.work); 1679 1680 dssdev = d->dssdev; 1681 dssdrv = dssdev->driver; 1682 fbdev = d->fbdev; 1683 1684 if (!dssdrv || !dssdrv->update) 1685 return; 1686 1687 if (dssdrv->sync) 1688 dssdrv->sync(dssdev); 1689 1690 dssdrv->get_resolution(dssdev, &w, &h); 1691 dssdrv->update(dssdev, 0, 0, w, h); 1692 1693 freq = auto_update_freq; 1694 if (freq == 0) 1695 freq = 20; 1696 queue_delayed_work(fbdev->auto_update_wq, 1697 &d->auto_update_work, HZ / freq); 1698 } 1699 1700 void omapfb_start_auto_update(struct omapfb2_device *fbdev, 1701 struct omap_dss_device *display) 1702 { 1703 struct omapfb_display_data *d; 1704 1705 if (fbdev->auto_update_wq == NULL) { 1706 struct workqueue_struct *wq; 1707 1708 wq = create_singlethread_workqueue("omapfb_auto_update"); 1709 1710 if (wq == NULL) { 1711 dev_err(fbdev->dev, "Failed to create workqueue for " 1712 "auto-update\n"); 1713 return; 1714 } 1715 1716 fbdev->auto_update_wq = wq; 1717 } 1718 1719 d = get_display_data(fbdev, display); 1720 1721 INIT_DELAYED_WORK(&d->auto_update_work, omapfb_auto_update_work); 1722 1723 d->auto_update_work_enabled = true; 1724 1725 omapfb_auto_update_work(&d->auto_update_work.work); 1726 } 1727 1728 void omapfb_stop_auto_update(struct omapfb2_device *fbdev, 1729 struct omap_dss_device *display) 1730 { 1731 struct omapfb_display_data *d; 1732 1733 d = get_display_data(fbdev, display); 1734 1735 cancel_delayed_work_sync(&d->auto_update_work); 1736 1737 d->auto_update_work_enabled = false; 1738 } 1739 1740 /* initialize fb_info, var, fix to something sane based on the display */ 1741 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi) 1742 { 1743 struct fb_var_screeninfo *var = &fbi->var; 1744 struct omap_dss_device *display = fb2display(fbi); 1745 struct omapfb_info *ofbi = FB2OFB(fbi); 1746 int r = 0; 1747 1748 fbi->fbops = &omapfb_ops; 1749 fbi->flags = FBINFO_FLAG_DEFAULT; 1750 fbi->pseudo_palette = fbdev->pseudo_palette; 1751 1752 if (ofbi->region->size == 0) { 1753 clear_fb_info(fbi); 1754 return 0; 1755 } 1756 1757 var->nonstd = 0; 1758 var->bits_per_pixel = 0; 1759 1760 var->rotate = def_rotate; 1761 1762 if (display) { 1763 u16 w, h; 1764 int rotation = (var->rotate + ofbi->rotation[0]) % 4; 1765 1766 display->driver->get_resolution(display, &w, &h); 1767 1768 if (rotation == FB_ROTATE_CW || 1769 rotation == FB_ROTATE_CCW) { 1770 var->xres = h; 1771 var->yres = w; 1772 } else { 1773 var->xres = w; 1774 var->yres = h; 1775 } 1776 1777 var->xres_virtual = var->xres; 1778 var->yres_virtual = var->yres; 1779 1780 if (!var->bits_per_pixel) { 1781 switch (omapfb_get_recommended_bpp(fbdev, display)) { 1782 case 16: 1783 var->bits_per_pixel = 16; 1784 break; 1785 case 24: 1786 var->bits_per_pixel = 32; 1787 break; 1788 default: 1789 dev_err(fbdev->dev, "illegal display " 1790 "bpp\n"); 1791 return -EINVAL; 1792 } 1793 } 1794 } else { 1795 /* if there's no display, let's just guess some basic values */ 1796 var->xres = 320; 1797 var->yres = 240; 1798 var->xres_virtual = var->xres; 1799 var->yres_virtual = var->yres; 1800 if (!var->bits_per_pixel) 1801 var->bits_per_pixel = 16; 1802 } 1803 1804 r = check_fb_var(fbi, var); 1805 if (r) 1806 goto err; 1807 1808 set_fb_fix(fbi); 1809 r = setup_vrfb_rotation(fbi); 1810 if (r) 1811 goto err; 1812 1813 r = fb_alloc_cmap(&fbi->cmap, 256, 0); 1814 if (r) 1815 dev_err(fbdev->dev, "unable to allocate color map memory\n"); 1816 1817 err: 1818 return r; 1819 } 1820 1821 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi) 1822 { 1823 fb_dealloc_cmap(&fbi->cmap); 1824 } 1825 1826 1827 static void omapfb_free_resources(struct omapfb2_device *fbdev) 1828 { 1829 int i; 1830 1831 DBG("free_resources\n"); 1832 1833 if (fbdev == NULL) 1834 return; 1835 1836 for (i = 0; i < fbdev->num_overlays; i++) { 1837 struct omap_overlay *ovl = fbdev->overlays[i]; 1838 1839 ovl->disable(ovl); 1840 1841 if (ovl->manager) 1842 ovl->unset_manager(ovl); 1843 } 1844 1845 for (i = 0; i < fbdev->num_fbs; i++) 1846 unregister_framebuffer(fbdev->fbs[i]); 1847 1848 /* free the reserved fbmem */ 1849 omapfb_free_all_fbmem(fbdev); 1850 1851 for (i = 0; i < fbdev->num_fbs; i++) { 1852 fbinfo_cleanup(fbdev, fbdev->fbs[i]); 1853 framebuffer_release(fbdev->fbs[i]); 1854 } 1855 1856 for (i = 0; i < fbdev->num_displays; i++) { 1857 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev; 1858 1859 if (fbdev->displays[i].auto_update_work_enabled) 1860 omapfb_stop_auto_update(fbdev, dssdev); 1861 1862 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) 1863 dssdev->driver->disable(dssdev); 1864 1865 dssdev->driver->disconnect(dssdev); 1866 1867 omap_dss_put_device(dssdev); 1868 } 1869 1870 if (fbdev->auto_update_wq != NULL) { 1871 flush_workqueue(fbdev->auto_update_wq); 1872 destroy_workqueue(fbdev->auto_update_wq); 1873 fbdev->auto_update_wq = NULL; 1874 } 1875 1876 dev_set_drvdata(fbdev->dev, NULL); 1877 } 1878 1879 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev) 1880 { 1881 int r, i; 1882 1883 fbdev->num_fbs = 0; 1884 1885 DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS); 1886 1887 /* allocate fb_infos */ 1888 for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) { 1889 struct fb_info *fbi; 1890 struct omapfb_info *ofbi; 1891 1892 fbi = framebuffer_alloc(sizeof(struct omapfb_info), 1893 fbdev->dev); 1894 1895 if (fbi == NULL) { 1896 dev_err(fbdev->dev, 1897 "unable to allocate memory for plane info\n"); 1898 return -ENOMEM; 1899 } 1900 1901 clear_fb_info(fbi); 1902 1903 fbdev->fbs[i] = fbi; 1904 1905 ofbi = FB2OFB(fbi); 1906 ofbi->fbdev = fbdev; 1907 ofbi->id = i; 1908 1909 ofbi->region = &fbdev->regions[i]; 1910 ofbi->region->id = i; 1911 init_rwsem(&ofbi->region->lock); 1912 1913 /* assign these early, so that fb alloc can use them */ 1914 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB : 1915 OMAP_DSS_ROT_DMA; 1916 ofbi->mirror = def_mirror; 1917 1918 fbdev->num_fbs++; 1919 } 1920 1921 DBG("fb_infos allocated\n"); 1922 1923 /* assign overlays for the fbs */ 1924 for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) { 1925 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]); 1926 1927 ofbi->overlays[0] = fbdev->overlays[i]; 1928 ofbi->num_overlays = 1; 1929 } 1930 1931 /* allocate fb memories */ 1932 r = omapfb_allocate_all_fbs(fbdev); 1933 if (r) { 1934 dev_err(fbdev->dev, "failed to allocate fbmem\n"); 1935 return r; 1936 } 1937 1938 DBG("fbmems allocated\n"); 1939 1940 /* setup fb_infos */ 1941 for (i = 0; i < fbdev->num_fbs; i++) { 1942 struct fb_info *fbi = fbdev->fbs[i]; 1943 struct omapfb_info *ofbi = FB2OFB(fbi); 1944 1945 omapfb_get_mem_region(ofbi->region); 1946 r = omapfb_fb_init(fbdev, fbi); 1947 omapfb_put_mem_region(ofbi->region); 1948 1949 if (r) { 1950 dev_err(fbdev->dev, "failed to setup fb_info\n"); 1951 return r; 1952 } 1953 } 1954 1955 for (i = 0; i < fbdev->num_fbs; i++) { 1956 struct fb_info *fbi = fbdev->fbs[i]; 1957 struct omapfb_info *ofbi = FB2OFB(fbi); 1958 1959 if (ofbi->region->size == 0) 1960 continue; 1961 1962 omapfb_clear_fb(fbi); 1963 } 1964 1965 DBG("fb_infos initialized\n"); 1966 1967 for (i = 0; i < fbdev->num_fbs; i++) { 1968 r = register_framebuffer(fbdev->fbs[i]); 1969 if (r != 0) { 1970 dev_err(fbdev->dev, 1971 "registering framebuffer %d failed\n", i); 1972 return r; 1973 } 1974 } 1975 1976 DBG("framebuffers registered\n"); 1977 1978 for (i = 0; i < fbdev->num_fbs; i++) { 1979 struct fb_info *fbi = fbdev->fbs[i]; 1980 struct omapfb_info *ofbi = FB2OFB(fbi); 1981 1982 omapfb_get_mem_region(ofbi->region); 1983 r = omapfb_apply_changes(fbi, 1); 1984 omapfb_put_mem_region(ofbi->region); 1985 1986 if (r) { 1987 dev_err(fbdev->dev, "failed to change mode\n"); 1988 return r; 1989 } 1990 } 1991 1992 /* Enable fb0 */ 1993 if (fbdev->num_fbs > 0) { 1994 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]); 1995 1996 if (ofbi->num_overlays > 0) { 1997 struct omap_overlay *ovl = ofbi->overlays[0]; 1998 1999 ovl->manager->apply(ovl->manager); 2000 2001 r = omapfb_overlay_enable(ovl, 1); 2002 2003 if (r) { 2004 dev_err(fbdev->dev, 2005 "failed to enable overlay\n"); 2006 return r; 2007 } 2008 } 2009 } 2010 2011 DBG("create_framebuffers done\n"); 2012 2013 return 0; 2014 } 2015 2016 static int omapfb_mode_to_timings(const char *mode_str, 2017 struct omap_dss_device *display, 2018 struct omap_video_timings *timings, u8 *bpp) 2019 { 2020 struct fb_info *fbi; 2021 struct fb_var_screeninfo *var; 2022 struct fb_ops *fbops; 2023 int r; 2024 2025 #ifdef CONFIG_OMAP2_DSS_VENC 2026 if (strcmp(mode_str, "pal") == 0) { 2027 *timings = omap_dss_pal_timings; 2028 *bpp = 24; 2029 return 0; 2030 } else if (strcmp(mode_str, "ntsc") == 0) { 2031 *timings = omap_dss_ntsc_timings; 2032 *bpp = 24; 2033 return 0; 2034 } 2035 #endif 2036 2037 /* this is quite a hack, but I wanted to use the modedb and for 2038 * that we need fb_info and var, so we create dummy ones */ 2039 2040 *bpp = 0; 2041 fbi = NULL; 2042 var = NULL; 2043 fbops = NULL; 2044 2045 fbi = kzalloc(sizeof(*fbi), GFP_KERNEL); 2046 if (fbi == NULL) { 2047 r = -ENOMEM; 2048 goto err; 2049 } 2050 2051 var = kzalloc(sizeof(*var), GFP_KERNEL); 2052 if (var == NULL) { 2053 r = -ENOMEM; 2054 goto err; 2055 } 2056 2057 fbops = kzalloc(sizeof(*fbops), GFP_KERNEL); 2058 if (fbops == NULL) { 2059 r = -ENOMEM; 2060 goto err; 2061 } 2062 2063 fbi->fbops = fbops; 2064 2065 r = fb_find_mode(var, fbi, mode_str, NULL, 0, NULL, 24); 2066 if (r == 0) { 2067 r = -EINVAL; 2068 goto err; 2069 } 2070 2071 if (display->driver->get_timings) { 2072 display->driver->get_timings(display, timings); 2073 } else { 2074 timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; 2075 timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH; 2076 timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES; 2077 } 2078 2079 timings->pixelclock = PICOS2KHZ(var->pixclock) * 1000; 2080 timings->hbp = var->left_margin; 2081 timings->hfp = var->right_margin; 2082 timings->vbp = var->upper_margin; 2083 timings->vfp = var->lower_margin; 2084 timings->hsw = var->hsync_len; 2085 timings->vsw = var->vsync_len; 2086 timings->x_res = var->xres; 2087 timings->y_res = var->yres; 2088 timings->hsync_level = var->sync & FB_SYNC_HOR_HIGH_ACT ? 2089 OMAPDSS_SIG_ACTIVE_HIGH : 2090 OMAPDSS_SIG_ACTIVE_LOW; 2091 timings->vsync_level = var->sync & FB_SYNC_VERT_HIGH_ACT ? 2092 OMAPDSS_SIG_ACTIVE_HIGH : 2093 OMAPDSS_SIG_ACTIVE_LOW; 2094 timings->interlace = var->vmode & FB_VMODE_INTERLACED; 2095 2096 switch (var->bits_per_pixel) { 2097 case 16: 2098 *bpp = 16; 2099 break; 2100 case 24: 2101 case 32: 2102 default: 2103 *bpp = 24; 2104 break; 2105 } 2106 2107 r = 0; 2108 2109 err: 2110 kfree(fbi); 2111 kfree(var); 2112 kfree(fbops); 2113 2114 return r; 2115 } 2116 2117 static int omapfb_set_def_mode(struct omapfb2_device *fbdev, 2118 struct omap_dss_device *display, char *mode_str) 2119 { 2120 int r; 2121 u8 bpp; 2122 struct omap_video_timings timings, temp_timings; 2123 struct omapfb_display_data *d; 2124 2125 r = omapfb_mode_to_timings(mode_str, display, &timings, &bpp); 2126 if (r) 2127 return r; 2128 2129 d = get_display_data(fbdev, display); 2130 d->bpp_override = bpp; 2131 2132 if (display->driver->check_timings) { 2133 r = display->driver->check_timings(display, &timings); 2134 if (r) 2135 return r; 2136 } else { 2137 /* If check_timings is not present compare xres and yres */ 2138 if (display->driver->get_timings) { 2139 display->driver->get_timings(display, &temp_timings); 2140 2141 if (temp_timings.x_res != timings.x_res || 2142 temp_timings.y_res != timings.y_res) 2143 return -EINVAL; 2144 } 2145 } 2146 2147 if (display->driver->set_timings) 2148 display->driver->set_timings(display, &timings); 2149 2150 return 0; 2151 } 2152 2153 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev, 2154 struct omap_dss_device *dssdev) 2155 { 2156 struct omapfb_display_data *d; 2157 2158 BUG_ON(dssdev->driver->get_recommended_bpp == NULL); 2159 2160 d = get_display_data(fbdev, dssdev); 2161 2162 if (d->bpp_override != 0) 2163 return d->bpp_override; 2164 2165 return dssdev->driver->get_recommended_bpp(dssdev); 2166 } 2167 2168 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev) 2169 { 2170 char *str, *options, *this_opt; 2171 int r = 0; 2172 2173 str = kstrdup(def_mode, GFP_KERNEL); 2174 if (!str) 2175 return -ENOMEM; 2176 options = str; 2177 2178 while (!r && (this_opt = strsep(&options, ",")) != NULL) { 2179 char *p, *display_str, *mode_str; 2180 struct omap_dss_device *display; 2181 int i; 2182 2183 p = strchr(this_opt, ':'); 2184 if (!p) { 2185 r = -EINVAL; 2186 break; 2187 } 2188 2189 *p = 0; 2190 display_str = this_opt; 2191 mode_str = p + 1; 2192 2193 display = NULL; 2194 for (i = 0; i < fbdev->num_displays; ++i) { 2195 if (strcmp(fbdev->displays[i].dssdev->name, 2196 display_str) == 0) { 2197 display = fbdev->displays[i].dssdev; 2198 break; 2199 } 2200 } 2201 2202 if (!display) { 2203 r = -EINVAL; 2204 break; 2205 } 2206 2207 r = omapfb_set_def_mode(fbdev, display, mode_str); 2208 if (r) 2209 break; 2210 } 2211 2212 kfree(str); 2213 2214 return r; 2215 } 2216 2217 static void fb_videomode_to_omap_timings(struct fb_videomode *m, 2218 struct omap_dss_device *display, 2219 struct omap_video_timings *t) 2220 { 2221 if (display->driver->get_timings) { 2222 display->driver->get_timings(display, t); 2223 } else { 2224 t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; 2225 t->de_level = OMAPDSS_SIG_ACTIVE_HIGH; 2226 t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES; 2227 } 2228 2229 t->x_res = m->xres; 2230 t->y_res = m->yres; 2231 t->pixelclock = PICOS2KHZ(m->pixclock) * 1000; 2232 t->hsw = m->hsync_len; 2233 t->hfp = m->right_margin; 2234 t->hbp = m->left_margin; 2235 t->vsw = m->vsync_len; 2236 t->vfp = m->lower_margin; 2237 t->vbp = m->upper_margin; 2238 t->hsync_level = m->sync & FB_SYNC_HOR_HIGH_ACT ? 2239 OMAPDSS_SIG_ACTIVE_HIGH : 2240 OMAPDSS_SIG_ACTIVE_LOW; 2241 t->vsync_level = m->sync & FB_SYNC_VERT_HIGH_ACT ? 2242 OMAPDSS_SIG_ACTIVE_HIGH : 2243 OMAPDSS_SIG_ACTIVE_LOW; 2244 t->interlace = m->vmode & FB_VMODE_INTERLACED; 2245 } 2246 2247 static int omapfb_find_best_mode(struct omap_dss_device *display, 2248 struct omap_video_timings *timings) 2249 { 2250 struct fb_monspecs *specs; 2251 u8 *edid; 2252 int r, i, best_idx, len; 2253 2254 if (!display->driver->read_edid) 2255 return -ENODEV; 2256 2257 len = 0x80 * 2; 2258 edid = kmalloc(len, GFP_KERNEL); 2259 if (edid == NULL) 2260 return -ENOMEM; 2261 2262 r = display->driver->read_edid(display, edid, len); 2263 if (r < 0) 2264 goto err1; 2265 2266 specs = kzalloc(sizeof(*specs), GFP_KERNEL); 2267 if (specs == NULL) { 2268 r = -ENOMEM; 2269 goto err1; 2270 } 2271 2272 fb_edid_to_monspecs(edid, specs); 2273 2274 best_idx = -1; 2275 2276 for (i = 0; i < specs->modedb_len; ++i) { 2277 struct fb_videomode *m; 2278 struct omap_video_timings t; 2279 2280 m = &specs->modedb[i]; 2281 2282 if (m->pixclock == 0) 2283 continue; 2284 2285 /* skip repeated pixel modes */ 2286 if (m->xres == 2880 || m->xres == 1440) 2287 continue; 2288 2289 if (m->vmode & FB_VMODE_INTERLACED || 2290 m->vmode & FB_VMODE_DOUBLE) 2291 continue; 2292 2293 fb_videomode_to_omap_timings(m, display, &t); 2294 2295 r = display->driver->check_timings(display, &t); 2296 if (r == 0) { 2297 best_idx = i; 2298 break; 2299 } 2300 } 2301 2302 if (best_idx == -1) { 2303 r = -ENOENT; 2304 goto err2; 2305 } 2306 2307 fb_videomode_to_omap_timings(&specs->modedb[best_idx], display, 2308 timings); 2309 2310 r = 0; 2311 2312 err2: 2313 fb_destroy_modedb(specs->modedb); 2314 kfree(specs); 2315 err1: 2316 kfree(edid); 2317 2318 return r; 2319 } 2320 2321 static int omapfb_init_display(struct omapfb2_device *fbdev, 2322 struct omap_dss_device *dssdev) 2323 { 2324 struct omap_dss_driver *dssdrv = dssdev->driver; 2325 struct omapfb_display_data *d; 2326 int r; 2327 2328 r = dssdrv->enable(dssdev); 2329 if (r) { 2330 dev_warn(fbdev->dev, "Failed to enable display '%s'\n", 2331 dssdev->name); 2332 return r; 2333 } 2334 2335 d = get_display_data(fbdev, dssdev); 2336 2337 d->fbdev = fbdev; 2338 2339 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) { 2340 u16 w, h; 2341 2342 if (auto_update) { 2343 omapfb_start_auto_update(fbdev, dssdev); 2344 d->update_mode = OMAPFB_AUTO_UPDATE; 2345 } else { 2346 d->update_mode = OMAPFB_MANUAL_UPDATE; 2347 } 2348 2349 if (dssdrv->enable_te) { 2350 r = dssdrv->enable_te(dssdev, 1); 2351 if (r) { 2352 dev_err(fbdev->dev, "Failed to set TE\n"); 2353 return r; 2354 } 2355 } 2356 2357 dssdrv->get_resolution(dssdev, &w, &h); 2358 r = dssdrv->update(dssdev, 0, 0, w, h); 2359 if (r) { 2360 dev_err(fbdev->dev, 2361 "Failed to update display\n"); 2362 return r; 2363 } 2364 } else { 2365 d->update_mode = OMAPFB_AUTO_UPDATE; 2366 } 2367 2368 return 0; 2369 } 2370 2371 static int omapfb_init_connections(struct omapfb2_device *fbdev, 2372 struct omap_dss_device *def_dssdev) 2373 { 2374 int i, r; 2375 struct omap_overlay_manager *mgr; 2376 2377 r = def_dssdev->driver->connect(def_dssdev); 2378 if (r) { 2379 dev_err(fbdev->dev, "failed to connect default display\n"); 2380 return r; 2381 } 2382 2383 for (i = 0; i < fbdev->num_displays; ++i) { 2384 struct omap_dss_device *dssdev = fbdev->displays[i].dssdev; 2385 2386 if (dssdev == def_dssdev) 2387 continue; 2388 2389 /* 2390 * We don't care if the connect succeeds or not. We just want to 2391 * connect as many displays as possible. 2392 */ 2393 dssdev->driver->connect(dssdev); 2394 } 2395 2396 mgr = omapdss_find_mgr_from_display(def_dssdev); 2397 2398 if (!mgr) { 2399 dev_err(fbdev->dev, "no ovl manager for the default display\n"); 2400 return -EINVAL; 2401 } 2402 2403 for (i = 0; i < fbdev->num_overlays; i++) { 2404 struct omap_overlay *ovl = fbdev->overlays[i]; 2405 2406 if (ovl->manager) 2407 ovl->unset_manager(ovl); 2408 2409 r = ovl->set_manager(ovl, mgr); 2410 if (r) 2411 dev_warn(fbdev->dev, 2412 "failed to connect overlay %s to manager %s\n", 2413 ovl->name, mgr->name); 2414 } 2415 2416 return 0; 2417 } 2418 2419 static struct omap_dss_device * 2420 omapfb_find_default_display(struct omapfb2_device *fbdev) 2421 { 2422 const char *def_name; 2423 int i; 2424 2425 /* 2426 * Search with the display name from the user or the board file, 2427 * comparing to display names and aliases 2428 */ 2429 2430 def_name = omapdss_get_default_display_name(); 2431 2432 if (def_name) { 2433 for (i = 0; i < fbdev->num_displays; ++i) { 2434 struct omap_dss_device *dssdev; 2435 2436 dssdev = fbdev->displays[i].dssdev; 2437 2438 if (dssdev->name && strcmp(def_name, dssdev->name) == 0) 2439 return dssdev; 2440 2441 if (strcmp(def_name, dssdev->alias) == 0) 2442 return dssdev; 2443 } 2444 2445 /* def_name given but not found */ 2446 return NULL; 2447 } 2448 2449 /* then look for DT alias display0 */ 2450 for (i = 0; i < fbdev->num_displays; ++i) { 2451 struct omap_dss_device *dssdev; 2452 int id; 2453 2454 dssdev = fbdev->displays[i].dssdev; 2455 2456 if (dssdev->dev->of_node == NULL) 2457 continue; 2458 2459 id = of_alias_get_id(dssdev->dev->of_node, "display"); 2460 if (id == 0) 2461 return dssdev; 2462 } 2463 2464 /* return the first display we have in the list */ 2465 return fbdev->displays[0].dssdev; 2466 } 2467 2468 static int omapfb_probe(struct platform_device *pdev) 2469 { 2470 struct omapfb2_device *fbdev = NULL; 2471 int r = 0; 2472 int i; 2473 struct omap_dss_device *def_display; 2474 struct omap_dss_device *dssdev; 2475 2476 DBG("omapfb_probe\n"); 2477 2478 if (omapdss_is_initialized() == false) 2479 return -EPROBE_DEFER; 2480 2481 if (pdev->num_resources != 0) { 2482 dev_err(&pdev->dev, "probed for an unknown device\n"); 2483 r = -ENODEV; 2484 goto err0; 2485 } 2486 2487 fbdev = devm_kzalloc(&pdev->dev, sizeof(struct omapfb2_device), 2488 GFP_KERNEL); 2489 if (fbdev == NULL) { 2490 r = -ENOMEM; 2491 goto err0; 2492 } 2493 2494 if (def_vrfb && !omap_vrfb_supported()) { 2495 def_vrfb = 0; 2496 dev_warn(&pdev->dev, "VRFB is not supported on this hardware, " 2497 "ignoring the module parameter vrfb=y\n"); 2498 } 2499 2500 r = omapdss_compat_init(); 2501 if (r) 2502 goto err0; 2503 2504 mutex_init(&fbdev->mtx); 2505 2506 fbdev->dev = &pdev->dev; 2507 platform_set_drvdata(pdev, fbdev); 2508 2509 fbdev->num_displays = 0; 2510 dssdev = NULL; 2511 for_each_dss_dev(dssdev) { 2512 struct omapfb_display_data *d; 2513 2514 omap_dss_get_device(dssdev); 2515 2516 if (!dssdev->driver) { 2517 dev_warn(&pdev->dev, "no driver for display: %s\n", 2518 dssdev->name); 2519 omap_dss_put_device(dssdev); 2520 continue; 2521 } 2522 2523 d = &fbdev->displays[fbdev->num_displays++]; 2524 d->dssdev = dssdev; 2525 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) 2526 d->update_mode = OMAPFB_MANUAL_UPDATE; 2527 else 2528 d->update_mode = OMAPFB_AUTO_UPDATE; 2529 } 2530 2531 if (fbdev->num_displays == 0) { 2532 dev_err(&pdev->dev, "no displays\n"); 2533 r = -EPROBE_DEFER; 2534 goto cleanup; 2535 } 2536 2537 fbdev->num_overlays = omap_dss_get_num_overlays(); 2538 for (i = 0; i < fbdev->num_overlays; i++) 2539 fbdev->overlays[i] = omap_dss_get_overlay(i); 2540 2541 fbdev->num_managers = omap_dss_get_num_overlay_managers(); 2542 for (i = 0; i < fbdev->num_managers; i++) 2543 fbdev->managers[i] = omap_dss_get_overlay_manager(i); 2544 2545 def_display = omapfb_find_default_display(fbdev); 2546 if (def_display == NULL) { 2547 dev_err(fbdev->dev, "failed to find default display\n"); 2548 r = -EPROBE_DEFER; 2549 goto cleanup; 2550 } 2551 2552 r = omapfb_init_connections(fbdev, def_display); 2553 if (r) { 2554 dev_err(fbdev->dev, "failed to init overlay connections\n"); 2555 goto cleanup; 2556 } 2557 2558 if (def_mode && strlen(def_mode) > 0) { 2559 if (omapfb_parse_def_modes(fbdev)) 2560 dev_warn(&pdev->dev, "cannot parse default modes\n"); 2561 } else if (def_display && def_display->driver->set_timings && 2562 def_display->driver->check_timings) { 2563 struct omap_video_timings t; 2564 2565 r = omapfb_find_best_mode(def_display, &t); 2566 2567 if (r == 0) 2568 def_display->driver->set_timings(def_display, &t); 2569 } 2570 2571 r = omapfb_create_framebuffers(fbdev); 2572 if (r) 2573 goto cleanup; 2574 2575 for (i = 0; i < fbdev->num_managers; i++) { 2576 struct omap_overlay_manager *mgr; 2577 mgr = fbdev->managers[i]; 2578 r = mgr->apply(mgr); 2579 if (r) 2580 dev_warn(fbdev->dev, "failed to apply dispc config\n"); 2581 } 2582 2583 DBG("mgr->apply'ed\n"); 2584 2585 if (def_display) { 2586 r = omapfb_init_display(fbdev, def_display); 2587 if (r) { 2588 dev_err(fbdev->dev, 2589 "failed to initialize default " 2590 "display\n"); 2591 goto cleanup; 2592 } 2593 } 2594 2595 DBG("create sysfs for fbs\n"); 2596 r = omapfb_create_sysfs(fbdev); 2597 if (r) { 2598 dev_err(fbdev->dev, "failed to create sysfs entries\n"); 2599 goto cleanup; 2600 } 2601 2602 if (def_display) { 2603 u16 w, h; 2604 2605 def_display->driver->get_resolution(def_display, &w, &h); 2606 2607 dev_info(fbdev->dev, "using display '%s' mode %dx%d\n", 2608 def_display->name, w, h); 2609 } 2610 2611 return 0; 2612 2613 cleanup: 2614 omapfb_free_resources(fbdev); 2615 omapdss_compat_uninit(); 2616 err0: 2617 dev_err(&pdev->dev, "failed to setup omapfb\n"); 2618 return r; 2619 } 2620 2621 static int omapfb_remove(struct platform_device *pdev) 2622 { 2623 struct omapfb2_device *fbdev = platform_get_drvdata(pdev); 2624 2625 /* FIXME: wait till completion of pending events */ 2626 2627 omapfb_remove_sysfs(fbdev); 2628 2629 omapfb_free_resources(fbdev); 2630 2631 omapdss_compat_uninit(); 2632 2633 return 0; 2634 } 2635 2636 static struct platform_driver omapfb_driver = { 2637 .probe = omapfb_probe, 2638 .remove = omapfb_remove, 2639 .driver = { 2640 .name = "omapfb", 2641 }, 2642 }; 2643 2644 module_param_named(mode, def_mode, charp, 0); 2645 module_param_named(vram, def_vram, charp, 0); 2646 module_param_named(rotate, def_rotate, int, 0); 2647 module_param_named(vrfb, def_vrfb, bool, 0); 2648 module_param_named(mirror, def_mirror, bool, 0); 2649 2650 module_platform_driver(omapfb_driver); 2651 2652 MODULE_ALIAS("platform:omapfb"); 2653 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); 2654 MODULE_DESCRIPTION("OMAP2/3 Framebuffer"); 2655 MODULE_LICENSE("GPL v2"); 2656