1 /* 2 * Copyright (c) 2006-2009 Red Hat Inc. 3 * Copyright (c) 2006-2008 Intel Corporation 4 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> 5 * 6 * DRM framebuffer helper functions 7 * 8 * Permission to use, copy, modify, distribute, and sell this software and its 9 * documentation for any purpose is hereby granted without fee, provided that 10 * the above copyright notice appear in all copies and that both that copyright 11 * notice and this permission notice appear in supporting documentation, and 12 * that the name of the copyright holders not be used in advertising or 13 * publicity pertaining to distribution of the software without specific, 14 * written prior permission. The copyright holders make no representations 15 * about the suitability of this software for any purpose. It is provided "as 16 * is" without express or implied warranty. 17 * 18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 24 * OF THIS SOFTWARE. 25 * 26 * Authors: 27 * Dave Airlie <airlied@linux.ie> 28 * Jesse Barnes <jesse.barnes@intel.com> 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <dev/drm2/drmP.h> 35 #include <dev/drm2/drm_crtc.h> 36 #include <dev/drm2/drm_fb_helper.h> 37 #include <dev/drm2/drm_crtc_helper.h> 38 39 static DRM_LIST_HEAD(kernel_fb_helper_list); 40 41 /* simple single crtc case helper function */ 42 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) 43 { 44 struct drm_device *dev = fb_helper->dev; 45 struct drm_connector *connector; 46 47 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 48 struct drm_fb_helper_connector *fb_helper_connector; 49 50 fb_helper_connector = malloc( 51 sizeof(struct drm_fb_helper_connector), DRM_MEM_KMS, 52 M_WAITOK | M_ZERO); 53 54 fb_helper_connector->connector = connector; 55 fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; 56 } 57 return 0; 58 } 59 60 const char *fb_mode_option; 61 62 /** 63 * drm_fb_helper_connector_parse_command_line - parse command line for connector 64 * @connector - connector to parse line for 65 * @mode_option - per connector mode option 66 * 67 * This parses the connector specific then generic command lines for 68 * modes and options to configure the connector. 69 * 70 * This uses the same parameters as the fb modedb.c, except for extra 71 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] 72 * 73 * enable/enable Digital/disable bit at the end 74 */ 75 static bool drm_fb_helper_connector_parse_command_line(struct drm_fb_helper_connector *fb_helper_conn, 76 const char *mode_option) 77 { 78 const char *name; 79 unsigned int namelen; 80 int res_specified = 0, bpp_specified = 0, refresh_specified = 0; 81 unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; 82 int yres_specified = 0, cvt = 0, rb = 0, interlace = 0, margins = 0; 83 int i; 84 enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; 85 struct drm_fb_helper_cmdline_mode *cmdline_mode; 86 struct drm_connector *connector; 87 88 if (!fb_helper_conn) 89 return false; 90 connector = fb_helper_conn->connector; 91 92 cmdline_mode = &fb_helper_conn->cmdline_mode; 93 if (!mode_option) 94 mode_option = fb_mode_option; 95 96 if (!mode_option) { 97 cmdline_mode->specified = false; 98 return false; 99 } 100 101 name = mode_option; 102 namelen = strlen(name); 103 for (i = namelen-1; i >= 0; i--) { 104 switch (name[i]) { 105 case '@': 106 namelen = i; 107 if (!refresh_specified && !bpp_specified && 108 !yres_specified) { 109 refresh = strtol(&name[i+1], NULL, 10); 110 refresh_specified = 1; 111 if (cvt || rb) 112 cvt = 0; 113 } else 114 goto done; 115 break; 116 case '-': 117 namelen = i; 118 if (!bpp_specified && !yres_specified) { 119 bpp = strtol(&name[i+1], NULL, 10); 120 bpp_specified = 1; 121 if (cvt || rb) 122 cvt = 0; 123 } else 124 goto done; 125 break; 126 case 'x': 127 if (!yres_specified) { 128 yres = strtol(&name[i+1], NULL, 10); 129 yres_specified = 1; 130 } else 131 goto done; 132 case '0' ... '9': 133 break; 134 case 'M': 135 if (!yres_specified) 136 cvt = 1; 137 break; 138 case 'R': 139 if (cvt) 140 rb = 1; 141 break; 142 case 'm': 143 if (!cvt) 144 margins = 1; 145 break; 146 case 'i': 147 if (!cvt) 148 interlace = 1; 149 break; 150 case 'e': 151 force = DRM_FORCE_ON; 152 break; 153 case 'D': 154 if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && 155 (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) 156 force = DRM_FORCE_ON; 157 else 158 force = DRM_FORCE_ON_DIGITAL; 159 break; 160 case 'd': 161 force = DRM_FORCE_OFF; 162 break; 163 default: 164 goto done; 165 } 166 } 167 if (i < 0 && yres_specified) { 168 xres = strtol(name, NULL, 10); 169 res_specified = 1; 170 } 171 done: 172 173 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", 174 drm_get_connector_name(connector), xres, yres, 175 (refresh) ? refresh : 60, (rb) ? " reduced blanking" : 176 "", (margins) ? " with margins" : "", (interlace) ? 177 " interlaced" : ""); 178 179 if (force) { 180 const char *s; 181 switch (force) { 182 case DRM_FORCE_OFF: s = "OFF"; break; 183 case DRM_FORCE_ON_DIGITAL: s = "ON - dig"; break; 184 default: 185 case DRM_FORCE_ON: s = "ON"; break; 186 } 187 188 DRM_INFO("forcing %s connector %s\n", 189 drm_get_connector_name(connector), s); 190 connector->force = force; 191 } 192 193 if (res_specified) { 194 cmdline_mode->specified = true; 195 cmdline_mode->xres = xres; 196 cmdline_mode->yres = yres; 197 } 198 199 if (refresh_specified) { 200 cmdline_mode->refresh_specified = true; 201 cmdline_mode->refresh = refresh; 202 } 203 204 if (bpp_specified) { 205 cmdline_mode->bpp_specified = true; 206 cmdline_mode->bpp = bpp; 207 } 208 cmdline_mode->rb = rb ? true : false; 209 cmdline_mode->cvt = cvt ? true : false; 210 cmdline_mode->interlace = interlace ? true : false; 211 212 return true; 213 } 214 215 static int 216 fb_get_options(const char *connector_name, char **option) 217 { 218 219 return (1); 220 } 221 222 static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) 223 { 224 struct drm_fb_helper_connector *fb_helper_conn; 225 int i; 226 227 for (i = 0; i < fb_helper->connector_count; i++) { 228 char *option = NULL; 229 230 fb_helper_conn = fb_helper->connector_info[i]; 231 232 /* do something on return - turn off connector maybe */ 233 if (fb_get_options(drm_get_connector_name(fb_helper_conn->connector), &option)) 234 continue; 235 236 drm_fb_helper_connector_parse_command_line(fb_helper_conn, option); 237 } 238 return 0; 239 } 240 241 #if 0 242 static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) 243 { 244 uint16_t *r_base, *g_base, *b_base; 245 int i; 246 247 r_base = crtc->gamma_store; 248 g_base = r_base + crtc->gamma_size; 249 b_base = g_base + crtc->gamma_size; 250 251 for (i = 0; i < crtc->gamma_size; i++) 252 helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); 253 } 254 255 static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) 256 { 257 uint16_t *r_base, *g_base, *b_base; 258 259 r_base = crtc->gamma_store; 260 g_base = r_base + crtc->gamma_size; 261 b_base = g_base + crtc->gamma_size; 262 263 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 264 } 265 #endif 266 267 #if 0 268 int drm_fb_helper_debug_enter(struct fb_info *info) 269 { 270 struct drm_fb_helper *helper = info->par; 271 struct drm_crtc_helper_funcs *funcs; 272 int i; 273 274 if (list_empty(&kernel_fb_helper_list)) 275 return false; 276 277 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { 278 for (i = 0; i < helper->crtc_count; i++) { 279 struct drm_mode_set *mode_set = 280 &helper->crtc_info[i].mode_set; 281 282 if (!mode_set->crtc->enabled) 283 continue; 284 285 funcs = mode_set->crtc->helper_private; 286 drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); 287 funcs->mode_set_base_atomic(mode_set->crtc, 288 mode_set->fb, 289 mode_set->x, 290 mode_set->y, 291 ENTER_ATOMIC_MODE_SET); 292 } 293 } 294 295 return 0; 296 } 297 #endif 298 299 #if 0 300 /* Find the real fb for a given fb helper CRTC */ 301 static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) 302 { 303 struct drm_device *dev = crtc->dev; 304 struct drm_crtc *c; 305 306 list_for_each_entry(c, &dev->mode_config.crtc_list, head) { 307 if (crtc->base.id == c->base.id) 308 return c->fb; 309 } 310 311 return NULL; 312 } 313 #endif 314 315 #if 0 316 int drm_fb_helper_debug_leave(struct fb_info *info) 317 { 318 struct drm_fb_helper *helper = info->par; 319 struct drm_crtc *crtc; 320 struct drm_crtc_helper_funcs *funcs; 321 struct drm_framebuffer *fb; 322 int i; 323 324 for (i = 0; i < helper->crtc_count; i++) { 325 struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; 326 crtc = mode_set->crtc; 327 funcs = crtc->helper_private; 328 fb = drm_mode_config_fb(crtc); 329 330 if (!crtc->enabled) 331 continue; 332 333 if (!fb) { 334 DRM_ERROR("no fb to restore??\n"); 335 continue; 336 } 337 338 drm_fb_helper_restore_lut_atomic(mode_set->crtc); 339 funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, 340 crtc->y, LEAVE_ATOMIC_MODE_SET); 341 } 342 343 return 0; 344 } 345 #endif 346 347 bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) 348 { 349 bool error = false; 350 int i, ret; 351 for (i = 0; i < fb_helper->crtc_count; i++) { 352 struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; 353 ret = drm_crtc_helper_set_config(mode_set); 354 if (ret) 355 error = true; 356 } 357 return error; 358 } 359 360 #if 0 361 bool drm_fb_helper_force_kernel_mode(void) 362 { 363 bool ret, error = false; 364 struct drm_fb_helper *helper; 365 366 if (list_empty(&kernel_fb_helper_list)) 367 return false; 368 369 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { 370 if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) 371 continue; 372 373 ret = drm_fb_helper_restore_fbdev_mode(helper); 374 if (ret) 375 error = true; 376 } 377 return error; 378 } 379 #endif 380 381 #if 0 382 int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, 383 void *panic_str) 384 { 385 printf("panic occurred, switching back to text console\n"); 386 return drm_fb_helper_force_kernel_mode(); 387 return 0; 388 } 389 390 static struct notifier_block paniced = { 391 .notifier_call = drm_fb_helper_panic, 392 }; 393 394 /** 395 * drm_fb_helper_restore - restore the framebuffer console (kernel) config 396 * 397 * Restore's the kernel's fbcon mode, used for lastclose & panic paths. 398 */ 399 void drm_fb_helper_restore(void) 400 { 401 bool ret; 402 ret = drm_fb_helper_force_kernel_mode(); 403 if (ret == true) 404 DRM_ERROR("Failed to restore crtc configuration\n"); 405 } 406 407 #ifdef CONFIG_MAGIC_SYSRQ 408 static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) 409 { 410 drm_fb_helper_restore(); 411 } 412 static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); 413 414 static void drm_fb_helper_sysrq(int dummy1) 415 { 416 schedule_work(&drm_fb_helper_restore_work); 417 } 418 419 static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { 420 .handler = drm_fb_helper_sysrq, 421 .help_msg = "force-fb(V)", 422 .action_msg = "Restore framebuffer console", 423 }; 424 #else 425 static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; 426 #endif 427 #endif 428 429 #if 0 430 static void drm_fb_helper_on(struct fb_info *info) 431 { 432 struct drm_fb_helper *fb_helper = info->par; 433 struct drm_device *dev = fb_helper->dev; 434 struct drm_crtc *crtc; 435 struct drm_crtc_helper_funcs *crtc_funcs; 436 struct drm_connector *connector; 437 struct drm_encoder *encoder; 438 int i, j; 439 440 /* 441 * For each CRTC in this fb, turn the crtc on then, 442 * find all associated encoders and turn them on. 443 */ 444 sx_xlock(&dev->mode_config.mutex); 445 for (i = 0; i < fb_helper->crtc_count; i++) { 446 crtc = fb_helper->crtc_info[i].mode_set.crtc; 447 crtc_funcs = crtc->helper_private; 448 449 if (!crtc->enabled) 450 continue; 451 452 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); 453 454 /* Walk the connectors & encoders on this fb turning them on */ 455 for (j = 0; j < fb_helper->connector_count; j++) { 456 connector = fb_helper->connector_info[j]->connector; 457 connector->dpms = DRM_MODE_DPMS_ON; 458 drm_connector_property_set_value(connector, 459 dev->mode_config.dpms_property, 460 DRM_MODE_DPMS_ON); 461 } 462 /* Found a CRTC on this fb, now find encoders */ 463 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 464 if (encoder->crtc == crtc) { 465 struct drm_encoder_helper_funcs *encoder_funcs; 466 467 encoder_funcs = encoder->helper_private; 468 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); 469 } 470 } 471 } 472 sx_xunlock(&dev->mode_config.mutex); 473 } 474 #endif 475 476 #if 0 477 static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) 478 { 479 struct drm_fb_helper *fb_helper = info->par; 480 struct drm_device *dev = fb_helper->dev; 481 struct drm_crtc *crtc; 482 struct drm_crtc_helper_funcs *crtc_funcs; 483 struct drm_connector *connector; 484 struct drm_encoder *encoder; 485 int i, j; 486 487 /* 488 * For each CRTC in this fb, find all associated encoders 489 * and turn them off, then turn off the CRTC. 490 */ 491 sx_xlock(&dev->mode_config.mutex); 492 for (i = 0; i < fb_helper->crtc_count; i++) { 493 crtc = fb_helper->crtc_info[i].mode_set.crtc; 494 crtc_funcs = crtc->helper_private; 495 496 if (!crtc->enabled) 497 continue; 498 499 /* Walk the connectors on this fb and mark them off */ 500 for (j = 0; j < fb_helper->connector_count; j++) { 501 connector = fb_helper->connector_info[j]->connector; 502 connector->dpms = dpms_mode; 503 drm_connector_property_set_value(connector, 504 dev->mode_config.dpms_property, 505 dpms_mode); 506 } 507 /* Found a CRTC on this fb, now find encoders */ 508 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 509 if (encoder->crtc == crtc) { 510 struct drm_encoder_helper_funcs *encoder_funcs; 511 512 encoder_funcs = encoder->helper_private; 513 encoder_funcs->dpms(encoder, dpms_mode); 514 } 515 } 516 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); 517 } 518 sx_xunlock(&dev->mode_config.mutex); 519 } 520 #endif 521 522 #if 0 523 int drm_fb_helper_blank(int blank, struct fb_info *info) 524 { 525 switch (blank) { 526 /* Display: On; HSync: On, VSync: On */ 527 case FB_BLANK_UNBLANK: 528 drm_fb_helper_on(info); 529 break; 530 /* Display: Off; HSync: On, VSync: On */ 531 case FB_BLANK_NORMAL: 532 drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); 533 break; 534 /* Display: Off; HSync: Off, VSync: On */ 535 case FB_BLANK_HSYNC_SUSPEND: 536 drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); 537 break; 538 /* Display: Off; HSync: On, VSync: Off */ 539 case FB_BLANK_VSYNC_SUSPEND: 540 drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); 541 break; 542 /* Display: Off; HSync: Off, VSync: Off */ 543 case FB_BLANK_POWERDOWN: 544 drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); 545 break; 546 } 547 return 0; 548 } 549 #endif 550 551 static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) 552 { 553 int i; 554 555 for (i = 0; i < helper->connector_count; i++) 556 free(helper->connector_info[i], DRM_MEM_KMS); 557 free(helper->connector_info, DRM_MEM_KMS); 558 for (i = 0; i < helper->crtc_count; i++) 559 free(helper->crtc_info[i].mode_set.connectors, DRM_MEM_KMS); 560 free(helper->crtc_info, DRM_MEM_KMS); 561 } 562 563 int drm_fb_helper_init(struct drm_device *dev, 564 struct drm_fb_helper *fb_helper, 565 int crtc_count, int max_conn_count) 566 { 567 struct drm_crtc *crtc; 568 int i; 569 570 fb_helper->dev = dev; 571 572 INIT_LIST_HEAD(&fb_helper->kernel_fb_list); 573 574 fb_helper->crtc_info = malloc(crtc_count * 575 sizeof(struct drm_fb_helper_crtc), DRM_MEM_KMS, M_WAITOK | M_ZERO); 576 577 fb_helper->crtc_count = crtc_count; 578 fb_helper->connector_info = malloc(dev->mode_config.num_connector * 579 sizeof(struct drm_fb_helper_connector *), DRM_MEM_KMS, 580 M_WAITOK | M_ZERO); 581 fb_helper->connector_count = 0; 582 583 for (i = 0; i < crtc_count; i++) { 584 fb_helper->crtc_info[i].mode_set.connectors = 585 malloc(max_conn_count * sizeof(struct drm_connector *), 586 DRM_MEM_KMS, M_WAITOK | M_ZERO); 587 588 fb_helper->crtc_info[i].mode_set.num_connectors = 0; 589 } 590 591 i = 0; 592 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 593 fb_helper->crtc_info[i].crtc_id = crtc->base.id; 594 fb_helper->crtc_info[i].mode_set.crtc = crtc; 595 i++; 596 } 597 fb_helper->conn_limit = max_conn_count; 598 return 0; 599 } 600 601 void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) 602 { 603 if (!list_empty(&fb_helper->kernel_fb_list)) { 604 list_del(&fb_helper->kernel_fb_list); 605 if (list_empty(&kernel_fb_helper_list)) { 606 #if 0 607 printk(KERN_INFO "drm: unregistered panic notifier\n"); 608 atomic_notifier_chain_unregister(&panic_notifier_list, 609 &paniced); 610 unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); 611 #endif 612 } 613 } 614 615 drm_fb_helper_crtc_free(fb_helper); 616 617 } 618 619 #if 0 620 static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, 621 u16 blue, u16 regno, struct fb_info *info) 622 { 623 struct drm_fb_helper *fb_helper = info->par; 624 struct drm_framebuffer *fb = fb_helper->fb; 625 int pindex; 626 627 if (info->fix.visual == FB_VISUAL_trueCOLOR) { 628 u32 *palette; 629 u32 value; 630 /* place color in psuedopalette */ 631 if (regno > 16) 632 return -EINVAL; 633 palette = (u32 *)info->pseudo_palette; 634 red >>= (16 - info->var.red.length); 635 green >>= (16 - info->var.green.length); 636 blue >>= (16 - info->var.blue.length); 637 value = (red << info->var.red.offset) | 638 (green << info->var.green.offset) | 639 (blue << info->var.blue.offset); 640 if (info->var.transp.length > 0) { 641 u32 mask = (1 << info->var.transp.length) - 1; 642 mask <<= info->var.transp.offset; 643 value |= mask; 644 } 645 palette[regno] = value; 646 return 0; 647 } 648 649 pindex = regno; 650 651 if (fb->bits_per_pixel == 16) { 652 pindex = regno << 3; 653 654 if (fb->depth == 16 && regno > 63) 655 return -EINVAL; 656 if (fb->depth == 15 && regno > 31) 657 return -EINVAL; 658 659 if (fb->depth == 16) { 660 u16 r, g, b; 661 int i; 662 if (regno < 32) { 663 for (i = 0; i < 8; i++) 664 fb_helper->funcs->gamma_set(crtc, red, 665 green, blue, pindex + i); 666 } 667 668 fb_helper->funcs->gamma_get(crtc, &r, 669 &g, &b, 670 pindex >> 1); 671 672 for (i = 0; i < 4; i++) 673 fb_helper->funcs->gamma_set(crtc, r, 674 green, b, 675 (pindex >> 1) + i); 676 } 677 } 678 679 if (fb->depth != 16) 680 fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); 681 return 0; 682 } 683 #endif 684 685 #if 0 686 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) 687 { 688 struct drm_fb_helper *fb_helper = info->par; 689 struct drm_crtc_helper_funcs *crtc_funcs; 690 u16 *red, *green, *blue, *transp; 691 struct drm_crtc *crtc; 692 int i, j, rc = 0; 693 int start; 694 695 for (i = 0; i < fb_helper->crtc_count; i++) { 696 crtc = fb_helper->crtc_info[i].mode_set.crtc; 697 crtc_funcs = crtc->helper_private; 698 699 red = cmap->red; 700 green = cmap->green; 701 blue = cmap->blue; 702 transp = cmap->transp; 703 start = cmap->start; 704 705 for (j = 0; j < cmap->len; j++) { 706 u16 hred, hgreen, hblue, htransp = 0xffff; 707 708 hred = *red++; 709 hgreen = *green++; 710 hblue = *blue++; 711 712 if (transp) 713 htransp = *transp++; 714 715 rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); 716 if (rc) 717 return rc; 718 } 719 crtc_funcs->load_lut(crtc); 720 } 721 return rc; 722 } 723 #endif 724 725 #if 0 726 int drm_fb_helper_check_var(struct fb_var_screeninfo *var, 727 struct fb_info *info) 728 { 729 struct drm_fb_helper *fb_helper = info->par; 730 struct drm_framebuffer *fb = fb_helper->fb; 731 int depth; 732 733 if (var->pixclock != 0 || in_dbg_master()) 734 return -EINVAL; 735 736 /* Need to resize the fb object !!! */ 737 if (var->bits_per_pixel > fb->bits_per_pixel || 738 var->xres > fb->width || var->yres > fb->height || 739 var->xres_virtual > fb->width || var->yres_virtual > fb->height) { 740 DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " 741 "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", 742 var->xres, var->yres, var->bits_per_pixel, 743 var->xres_virtual, var->yres_virtual, 744 fb->width, fb->height, fb->bits_per_pixel); 745 return -EINVAL; 746 } 747 748 switch (var->bits_per_pixel) { 749 case 16: 750 depth = (var->green.length == 6) ? 16 : 15; 751 break; 752 case 32: 753 depth = (var->transp.length > 0) ? 32 : 24; 754 break; 755 default: 756 depth = var->bits_per_pixel; 757 break; 758 } 759 760 switch (depth) { 761 case 8: 762 var->red.offset = 0; 763 var->green.offset = 0; 764 var->blue.offset = 0; 765 var->red.length = 8; 766 var->green.length = 8; 767 var->blue.length = 8; 768 var->transp.length = 0; 769 var->transp.offset = 0; 770 break; 771 case 15: 772 var->red.offset = 10; 773 var->green.offset = 5; 774 var->blue.offset = 0; 775 var->red.length = 5; 776 var->green.length = 5; 777 var->blue.length = 5; 778 var->transp.length = 1; 779 var->transp.offset = 15; 780 break; 781 case 16: 782 var->red.offset = 11; 783 var->green.offset = 5; 784 var->blue.offset = 0; 785 var->red.length = 5; 786 var->green.length = 6; 787 var->blue.length = 5; 788 var->transp.length = 0; 789 var->transp.offset = 0; 790 break; 791 case 24: 792 var->red.offset = 16; 793 var->green.offset = 8; 794 var->blue.offset = 0; 795 var->red.length = 8; 796 var->green.length = 8; 797 var->blue.length = 8; 798 var->transp.length = 0; 799 var->transp.offset = 0; 800 break; 801 case 32: 802 var->red.offset = 16; 803 var->green.offset = 8; 804 var->blue.offset = 0; 805 var->red.length = 8; 806 var->green.length = 8; 807 var->blue.length = 8; 808 var->transp.length = 8; 809 var->transp.offset = 24; 810 break; 811 default: 812 return -EINVAL; 813 } 814 return 0; 815 } 816 #endif 817 818 #if 0 819 /* this will let fbcon do the mode init */ 820 int drm_fb_helper_set_par(struct fb_info *info) 821 { 822 struct drm_fb_helper *fb_helper = info->par; 823 struct drm_device *dev = fb_helper->dev; 824 struct fb_var_screeninfo *var = &info->var; 825 struct drm_crtc *crtc; 826 int ret; 827 int i; 828 829 if (var->pixclock != 0) { 830 DRM_ERROR("PIXEL CLOCK SET\n"); 831 return -EINVAL; 832 } 833 834 mutex_lock(&dev->mode_config.mutex); 835 for (i = 0; i < fb_helper->crtc_count; i++) { 836 crtc = fb_helper->crtc_info[i].mode_set.crtc; 837 ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); 838 if (ret) { 839 mutex_unlock(&dev->mode_config.mutex); 840 return ret; 841 } 842 } 843 mutex_unlock(&dev->mode_config.mutex); 844 845 if (fb_helper->delayed_hotplug) { 846 fb_helper->delayed_hotplug = false; 847 drm_fb_helper_hotplug_event(fb_helper); 848 } 849 return 0; 850 } 851 #endif 852 853 #if 0 854 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 855 struct fb_info *info) 856 { 857 struct drm_fb_helper *fb_helper = info->par; 858 struct drm_device *dev = fb_helper->dev; 859 struct drm_mode_set *modeset; 860 struct drm_crtc *crtc; 861 int ret = 0; 862 int i; 863 864 mutex_lock(&dev->mode_config.mutex); 865 for (i = 0; i < fb_helper->crtc_count; i++) { 866 crtc = fb_helper->crtc_info[i].mode_set.crtc; 867 868 modeset = &fb_helper->crtc_info[i].mode_set; 869 870 modeset->x = var->xoffset; 871 modeset->y = var->yoffset; 872 873 if (modeset->num_connectors) { 874 ret = crtc->funcs->set_config(modeset); 875 if (!ret) { 876 info->var.xoffset = var->xoffset; 877 info->var.yoffset = var->yoffset; 878 } 879 } 880 } 881 mutex_unlock(&dev->mode_config.mutex); 882 return ret; 883 } 884 #endif 885 886 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, 887 int preferred_bpp) 888 { 889 int new_fb = 0; 890 int crtc_count = 0; 891 int i; 892 #if 0 893 struct fb_info *info; 894 #endif 895 struct drm_fb_helper_surface_size sizes; 896 int gamma_size = 0; 897 898 memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); 899 sizes.surface_depth = 24; 900 sizes.surface_bpp = 32; 901 sizes.fb_width = (unsigned)-1; 902 sizes.fb_height = (unsigned)-1; 903 904 /* if driver picks 8 or 16 by default use that 905 for both depth/bpp */ 906 if (preferred_bpp != sizes.surface_bpp) { 907 sizes.surface_depth = sizes.surface_bpp = preferred_bpp; 908 } 909 /* first up get a count of crtcs now in use and new min/maxes width/heights */ 910 for (i = 0; i < fb_helper->connector_count; i++) { 911 struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; 912 struct drm_fb_helper_cmdline_mode *cmdline_mode; 913 914 cmdline_mode = &fb_helper_conn->cmdline_mode; 915 916 if (cmdline_mode->bpp_specified) { 917 switch (cmdline_mode->bpp) { 918 case 8: 919 sizes.surface_depth = sizes.surface_bpp = 8; 920 break; 921 case 15: 922 sizes.surface_depth = 15; 923 sizes.surface_bpp = 16; 924 break; 925 case 16: 926 sizes.surface_depth = sizes.surface_bpp = 16; 927 break; 928 case 24: 929 sizes.surface_depth = sizes.surface_bpp = 24; 930 break; 931 case 32: 932 sizes.surface_depth = 24; 933 sizes.surface_bpp = 32; 934 break; 935 } 936 break; 937 } 938 } 939 940 crtc_count = 0; 941 for (i = 0; i < fb_helper->crtc_count; i++) { 942 struct drm_display_mode *desired_mode; 943 desired_mode = fb_helper->crtc_info[i].desired_mode; 944 945 if (desired_mode) { 946 if (gamma_size == 0) 947 gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; 948 if (desired_mode->hdisplay < sizes.fb_width) 949 sizes.fb_width = desired_mode->hdisplay; 950 if (desired_mode->vdisplay < sizes.fb_height) 951 sizes.fb_height = desired_mode->vdisplay; 952 if (desired_mode->hdisplay > sizes.surface_width) 953 sizes.surface_width = desired_mode->hdisplay; 954 if (desired_mode->vdisplay > sizes.surface_height) 955 sizes.surface_height = desired_mode->vdisplay; 956 crtc_count++; 957 } 958 } 959 960 if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { 961 /* hmm everyone went away - assume VGA cable just fell out 962 and will come back later. */ 963 DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); 964 sizes.fb_width = sizes.surface_width = 1024; 965 sizes.fb_height = sizes.surface_height = 768; 966 } 967 968 /* push down into drivers */ 969 new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); 970 if (new_fb < 0) 971 return new_fb; 972 973 #if 0 974 info = fb_helper->fbdev; 975 #endif 976 977 /* set the fb pointer */ 978 for (i = 0; i < fb_helper->crtc_count; i++) { 979 fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; 980 } 981 982 #if 0 983 if (new_fb) { 984 info->var.pixclock = 0; 985 if (register_framebuffer(info) < 0) { 986 return -EINVAL; 987 } 988 989 printf("fb%d: %s frame buffer device\n", info->node, 990 info->fix.id); 991 992 } else { 993 drm_fb_helper_set_par(info); 994 } 995 996 /* Switch back to kernel console on panic */ 997 /* multi card linked list maybe */ 998 if (list_empty(&kernel_fb_helper_list)) { 999 printf("drm: registered panic notifier\n"); 1000 atomic_notifier_chain_register(&panic_notifier_list, 1001 &paniced); 1002 } 1003 if (new_fb) 1004 list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); 1005 #endif 1006 1007 return 0; 1008 } 1009 1010 #if 0 1011 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, 1012 uint32_t depth) 1013 { 1014 info->fix.type = FB_TYPE_PACKED_PIXELS; 1015 info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : 1016 FB_VISUAL_trueCOLOR; 1017 info->fix.mmio_start = 0; 1018 info->fix.mmio_len = 0; 1019 info->fix.type_aux = 0; 1020 info->fix.xpanstep = 1; /* doing it in hw */ 1021 info->fix.ypanstep = 1; /* doing it in hw */ 1022 info->fix.ywrapstep = 0; 1023 info->fix.accel = FB_ACCEL_NONE; 1024 info->fix.type_aux = 0; 1025 1026 info->fix.line_length = pitch; 1027 return; 1028 } 1029 1030 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, 1031 uint32_t fb_width, uint32_t fb_height) 1032 { 1033 struct drm_framebuffer *fb = fb_helper->fb; 1034 info->pseudo_palette = fb_helper->pseudo_palette; 1035 info->var.xres_virtual = fb->width; 1036 info->var.yres_virtual = fb->height; 1037 info->var.bits_per_pixel = fb->bits_per_pixel; 1038 info->var.accel_flags = FB_ACCELF_TEXT; 1039 info->var.xoffset = 0; 1040 info->var.yoffset = 0; 1041 info->var.activate = FB_ACTIVATE_NOW; 1042 info->var.height = -1; 1043 info->var.width = -1; 1044 1045 switch (fb->depth) { 1046 case 8: 1047 info->var.red.offset = 0; 1048 info->var.green.offset = 0; 1049 info->var.blue.offset = 0; 1050 info->var.red.length = 8; /* 8bit DAC */ 1051 info->var.green.length = 8; 1052 info->var.blue.length = 8; 1053 info->var.transp.offset = 0; 1054 info->var.transp.length = 0; 1055 break; 1056 case 15: 1057 info->var.red.offset = 10; 1058 info->var.green.offset = 5; 1059 info->var.blue.offset = 0; 1060 info->var.red.length = 5; 1061 info->var.green.length = 5; 1062 info->var.blue.length = 5; 1063 info->var.transp.offset = 15; 1064 info->var.transp.length = 1; 1065 break; 1066 case 16: 1067 info->var.red.offset = 11; 1068 info->var.green.offset = 5; 1069 info->var.blue.offset = 0; 1070 info->var.red.length = 5; 1071 info->var.green.length = 6; 1072 info->var.blue.length = 5; 1073 info->var.transp.offset = 0; 1074 break; 1075 case 24: 1076 info->var.red.offset = 16; 1077 info->var.green.offset = 8; 1078 info->var.blue.offset = 0; 1079 info->var.red.length = 8; 1080 info->var.green.length = 8; 1081 info->var.blue.length = 8; 1082 info->var.transp.offset = 0; 1083 info->var.transp.length = 0; 1084 break; 1085 case 32: 1086 info->var.red.offset = 16; 1087 info->var.green.offset = 8; 1088 info->var.blue.offset = 0; 1089 info->var.red.length = 8; 1090 info->var.green.length = 8; 1091 info->var.blue.length = 8; 1092 info->var.transp.offset = 24; 1093 info->var.transp.length = 8; 1094 break; 1095 default: 1096 break; 1097 } 1098 1099 info->var.xres = fb_width; 1100 info->var.yres = fb_height; 1101 } 1102 #endif 1103 1104 static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, 1105 uint32_t maxX, 1106 uint32_t maxY) 1107 { 1108 struct drm_connector *connector; 1109 int count = 0; 1110 int i; 1111 1112 for (i = 0; i < fb_helper->connector_count; i++) { 1113 connector = fb_helper->connector_info[i]->connector; 1114 count += connector->funcs->fill_modes(connector, maxX, maxY); 1115 } 1116 1117 return count; 1118 } 1119 1120 static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) 1121 { 1122 struct drm_display_mode *mode; 1123 1124 list_for_each_entry(mode, &fb_connector->connector->modes, head) { 1125 if (drm_mode_width(mode) > width || 1126 drm_mode_height(mode) > height) 1127 continue; 1128 if (mode->type & DRM_MODE_TYPE_PREFERRED) 1129 return mode; 1130 } 1131 return NULL; 1132 } 1133 1134 static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) 1135 { 1136 struct drm_fb_helper_cmdline_mode *cmdline_mode; 1137 cmdline_mode = &fb_connector->cmdline_mode; 1138 return cmdline_mode->specified; 1139 } 1140 1141 static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, 1142 int width, int height) 1143 { 1144 struct drm_cmdline_mode *cmdline_mode; 1145 struct drm_display_mode *mode = NULL; 1146 1147 cmdline_mode = &fb_helper_conn->cmdline_mode1; 1148 if (cmdline_mode->specified == false && 1149 !drm_fetch_cmdline_mode_from_kenv(fb_helper_conn->connector, 1150 cmdline_mode)) 1151 return (NULL); 1152 1153 /* attempt to find a matching mode in the list of modes 1154 * we have gotten so far, if not add a CVT mode that conforms 1155 */ 1156 if (cmdline_mode->rb || cmdline_mode->margins) 1157 goto create_mode; 1158 1159 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1160 /* check width/height */ 1161 if (mode->hdisplay != cmdline_mode->xres || 1162 mode->vdisplay != cmdline_mode->yres) 1163 continue; 1164 1165 if (cmdline_mode->refresh_specified) { 1166 if (mode->vrefresh != cmdline_mode->refresh) 1167 continue; 1168 } 1169 1170 if (cmdline_mode->interlace) { 1171 if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) 1172 continue; 1173 } 1174 return mode; 1175 } 1176 1177 create_mode: 1178 if (cmdline_mode->cvt) 1179 mode = drm_cvt_mode(fb_helper_conn->connector->dev, 1180 cmdline_mode->xres, cmdline_mode->yres, 1181 cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, 1182 cmdline_mode->rb, cmdline_mode->interlace, 1183 cmdline_mode->margins); 1184 else 1185 mode = drm_gtf_mode(fb_helper_conn->connector->dev, 1186 cmdline_mode->xres, cmdline_mode->yres, 1187 cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, 1188 cmdline_mode->interlace, 1189 cmdline_mode->margins); 1190 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 1191 list_add(&mode->head, &fb_helper_conn->connector->modes); 1192 return mode; 1193 } 1194 1195 static bool drm_connector_enabled(struct drm_connector *connector, bool strict) 1196 { 1197 bool enable; 1198 1199 if (strict) { 1200 enable = connector->status == connector_status_connected; 1201 } else { 1202 enable = connector->status != connector_status_disconnected; 1203 } 1204 return enable; 1205 } 1206 1207 static void drm_enable_connectors(struct drm_fb_helper *fb_helper, 1208 bool *enabled) 1209 { 1210 bool any_enabled = false; 1211 struct drm_connector *connector; 1212 int i = 0; 1213 1214 for (i = 0; i < fb_helper->connector_count; i++) { 1215 connector = fb_helper->connector_info[i]->connector; 1216 enabled[i] = drm_connector_enabled(connector, true); 1217 DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, 1218 enabled[i] ? "yes" : "no"); 1219 any_enabled |= enabled[i]; 1220 } 1221 1222 if (any_enabled) 1223 return; 1224 1225 for (i = 0; i < fb_helper->connector_count; i++) { 1226 connector = fb_helper->connector_info[i]->connector; 1227 enabled[i] = drm_connector_enabled(connector, false); 1228 } 1229 } 1230 1231 static bool drm_target_cloned(struct drm_fb_helper *fb_helper, 1232 struct drm_display_mode **modes, 1233 bool *enabled, int width, int height) 1234 { 1235 int count, i, j; 1236 bool can_clone = false; 1237 struct drm_fb_helper_connector *fb_helper_conn; 1238 struct drm_display_mode *dmt_mode, *mode; 1239 1240 /* only contemplate cloning in the single crtc case */ 1241 if (fb_helper->crtc_count > 1) 1242 return false; 1243 1244 count = 0; 1245 for (i = 0; i < fb_helper->connector_count; i++) { 1246 if (enabled[i]) 1247 count++; 1248 } 1249 1250 /* only contemplate cloning if more than one connector is enabled */ 1251 if (count <= 1) 1252 return false; 1253 1254 /* check the command line or if nothing common pick 1024x768 */ 1255 can_clone = true; 1256 for (i = 0; i < fb_helper->connector_count; i++) { 1257 if (!enabled[i]) 1258 continue; 1259 fb_helper_conn = fb_helper->connector_info[i]; 1260 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1261 if (!modes[i]) { 1262 can_clone = false; 1263 break; 1264 } 1265 for (j = 0; j < i; j++) { 1266 if (!enabled[j]) 1267 continue; 1268 if (!drm_mode_equal(modes[j], modes[i])) 1269 can_clone = false; 1270 } 1271 } 1272 1273 if (can_clone) { 1274 DRM_DEBUG_KMS("can clone using command line\n"); 1275 return true; 1276 } 1277 1278 /* try and find a 1024x768 mode on each connector */ 1279 can_clone = true; 1280 dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); 1281 1282 for (i = 0; i < fb_helper->connector_count; i++) { 1283 1284 if (!enabled[i]) 1285 continue; 1286 1287 fb_helper_conn = fb_helper->connector_info[i]; 1288 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1289 if (drm_mode_equal(mode, dmt_mode)) 1290 modes[i] = mode; 1291 } 1292 if (!modes[i]) 1293 can_clone = false; 1294 } 1295 1296 if (can_clone) { 1297 DRM_DEBUG_KMS("can clone using 1024x768\n"); 1298 return true; 1299 } 1300 DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); 1301 return false; 1302 } 1303 1304 static bool drm_target_preferred(struct drm_fb_helper *fb_helper, 1305 struct drm_display_mode **modes, 1306 bool *enabled, int width, int height) 1307 { 1308 struct drm_fb_helper_connector *fb_helper_conn; 1309 int i; 1310 1311 for (i = 0; i < fb_helper->connector_count; i++) { 1312 fb_helper_conn = fb_helper->connector_info[i]; 1313 1314 if (enabled[i] == false) 1315 continue; 1316 1317 DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", 1318 fb_helper_conn->connector->base.id); 1319 1320 /* got for command line mode first */ 1321 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1322 if (!modes[i]) { 1323 DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", 1324 fb_helper_conn->connector->base.id); 1325 modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); 1326 } 1327 /* No preferred modes, pick one off the list */ 1328 if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { 1329 list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) 1330 break; 1331 } 1332 DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : 1333 "none"); 1334 } 1335 return true; 1336 } 1337 1338 static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, 1339 struct drm_fb_helper_crtc **best_crtcs, 1340 struct drm_display_mode **modes, 1341 int n, int width, int height) 1342 { 1343 int c, o; 1344 struct drm_device *dev = fb_helper->dev; 1345 struct drm_connector *connector; 1346 struct drm_connector_helper_funcs *connector_funcs; 1347 struct drm_encoder *encoder; 1348 struct drm_fb_helper_crtc *best_crtc; 1349 int my_score, best_score, score; 1350 struct drm_fb_helper_crtc **crtcs, *crtc; 1351 struct drm_fb_helper_connector *fb_helper_conn; 1352 1353 if (n == fb_helper->connector_count) 1354 return 0; 1355 1356 fb_helper_conn = fb_helper->connector_info[n]; 1357 connector = fb_helper_conn->connector; 1358 1359 best_crtcs[n] = NULL; 1360 best_crtc = NULL; 1361 best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); 1362 if (modes[n] == NULL) 1363 return best_score; 1364 1365 crtcs = malloc(dev->mode_config.num_connector * 1366 sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, 1367 M_WAITOK | M_ZERO); 1368 1369 my_score = 1; 1370 if (connector->status == connector_status_connected) 1371 my_score++; 1372 if (drm_has_cmdline_mode(fb_helper_conn)) 1373 my_score++; 1374 if (drm_has_preferred_mode(fb_helper_conn, width, height)) 1375 my_score++; 1376 1377 connector_funcs = connector->helper_private; 1378 encoder = connector_funcs->best_encoder(connector); 1379 if (!encoder) 1380 goto out; 1381 1382 /* select a crtc for this connector and then attempt to configure 1383 remaining connectors */ 1384 for (c = 0; c < fb_helper->crtc_count; c++) { 1385 crtc = &fb_helper->crtc_info[c]; 1386 1387 if ((encoder->possible_crtcs & (1 << c)) == 0) { 1388 continue; 1389 } 1390 1391 for (o = 0; o < n; o++) 1392 if (best_crtcs[o] == crtc) 1393 break; 1394 1395 if (o < n) { 1396 /* ignore cloning unless only a single crtc */ 1397 if (fb_helper->crtc_count > 1) 1398 continue; 1399 1400 if (!drm_mode_equal(modes[o], modes[n])) 1401 continue; 1402 } 1403 1404 crtcs[n] = crtc; 1405 memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); 1406 score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, 1407 width, height); 1408 if (score > best_score) { 1409 best_crtc = crtc; 1410 best_score = score; 1411 memcpy(best_crtcs, crtcs, 1412 dev->mode_config.num_connector * 1413 sizeof(struct drm_fb_helper_crtc *)); 1414 } 1415 } 1416 out: 1417 free(crtcs, DRM_MEM_KMS); 1418 return best_score; 1419 } 1420 1421 static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) 1422 { 1423 struct drm_device *dev = fb_helper->dev; 1424 struct drm_fb_helper_crtc **crtcs; 1425 struct drm_display_mode **modes; 1426 struct drm_encoder *encoder; 1427 struct drm_mode_set *modeset; 1428 bool *enabled; 1429 int width, height; 1430 int i, ret; 1431 1432 DRM_DEBUG_KMS("\n"); 1433 1434 width = dev->mode_config.max_width; 1435 height = dev->mode_config.max_height; 1436 1437 /* clean out all the encoder/crtc combos */ 1438 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 1439 encoder->crtc = NULL; 1440 } 1441 1442 crtcs = malloc(dev->mode_config.num_connector * 1443 sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, 1444 M_WAITOK | M_ZERO); 1445 modes = malloc(dev->mode_config.num_connector * 1446 sizeof(struct drm_display_mode *), DRM_MEM_KMS, 1447 M_WAITOK | M_ZERO); 1448 enabled = malloc(dev->mode_config.num_connector * 1449 sizeof(bool), DRM_MEM_KMS, M_WAITOK | M_ZERO); 1450 1451 drm_enable_connectors(fb_helper, enabled); 1452 1453 ret = drm_target_cloned(fb_helper, modes, enabled, width, height); 1454 if (!ret) { 1455 ret = drm_target_preferred(fb_helper, modes, enabled, width, height); 1456 if (!ret) 1457 DRM_ERROR("Unable to find initial modes\n"); 1458 } 1459 1460 DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); 1461 1462 drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); 1463 1464 /* need to set the modesets up here for use later */ 1465 /* fill out the connector<->crtc mappings into the modesets */ 1466 for (i = 0; i < fb_helper->crtc_count; i++) { 1467 modeset = &fb_helper->crtc_info[i].mode_set; 1468 modeset->num_connectors = 0; 1469 } 1470 1471 for (i = 0; i < fb_helper->connector_count; i++) { 1472 struct drm_display_mode *mode = modes[i]; 1473 struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; 1474 modeset = &fb_crtc->mode_set; 1475 1476 if (mode && fb_crtc) { 1477 DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", 1478 mode->name, fb_crtc->mode_set.crtc->base.id); 1479 fb_crtc->desired_mode = mode; 1480 if (modeset->mode) 1481 drm_mode_destroy(dev, modeset->mode); 1482 modeset->mode = drm_mode_duplicate(dev, 1483 fb_crtc->desired_mode); 1484 modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; 1485 } 1486 } 1487 1488 free(crtcs, DRM_MEM_KMS); 1489 free(modes, DRM_MEM_KMS); 1490 free(enabled, DRM_MEM_KMS); 1491 } 1492 1493 /** 1494 * drm_helper_initial_config - setup a sane initial connector configuration 1495 * @dev: DRM device 1496 * 1497 * LOCKING: 1498 * Called at init time, must take mode config lock. 1499 * 1500 * Scan the CRTCs and connectors and try to put together an initial setup. 1501 * At the moment, this is a cloned configuration across all heads with 1502 * a new framebuffer object as the backing store. 1503 * 1504 * RETURNS: 1505 * Zero if everything went ok, nonzero otherwise. 1506 */ 1507 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) 1508 { 1509 struct drm_device *dev = fb_helper->dev; 1510 int count = 0; 1511 1512 /* disable all the possible outputs/crtcs before entering KMS mode */ 1513 drm_helper_disable_unused_functions(fb_helper->dev); 1514 1515 drm_fb_helper_parse_command_line(fb_helper); 1516 1517 count = drm_fb_helper_probe_connector_modes(fb_helper, 1518 dev->mode_config.max_width, 1519 dev->mode_config.max_height); 1520 /* 1521 * we shouldn't end up with no modes here. 1522 */ 1523 if (count == 0) { 1524 printf("No connectors reported connected with modes\n"); 1525 } 1526 drm_setup_crtcs(fb_helper); 1527 1528 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); 1529 } 1530 1531 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) 1532 { 1533 struct drm_device *dev = fb_helper->dev; 1534 int count = 0; 1535 u32 max_width, max_height, bpp_sel; 1536 bool bound = false, crtcs_bound = false; 1537 struct drm_crtc *crtc; 1538 1539 if (!fb_helper->fb) 1540 return 0; 1541 1542 sx_xlock(&dev->mode_config.mutex); 1543 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 1544 if (crtc->fb) 1545 crtcs_bound = true; 1546 if (crtc->fb == fb_helper->fb) 1547 bound = true; 1548 } 1549 1550 if (!bound && crtcs_bound) { 1551 fb_helper->delayed_hotplug = true; 1552 sx_xunlock(&dev->mode_config.mutex); 1553 return 0; 1554 } 1555 DRM_DEBUG_KMS("\n"); 1556 1557 max_width = fb_helper->fb->width; 1558 max_height = fb_helper->fb->height; 1559 bpp_sel = fb_helper->fb->bits_per_pixel; 1560 1561 count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, 1562 max_height); 1563 drm_setup_crtcs(fb_helper); 1564 sx_xunlock(&dev->mode_config.mutex); 1565 1566 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); 1567 } 1568 1569