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 if (helper->crtc_info[i].mode_set.mode) 561 drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); 562 } 563 free(helper->crtc_info, DRM_MEM_KMS); 564 } 565 566 int drm_fb_helper_init(struct drm_device *dev, 567 struct drm_fb_helper *fb_helper, 568 int crtc_count, int max_conn_count) 569 { 570 struct drm_crtc *crtc; 571 int i; 572 573 fb_helper->dev = dev; 574 575 INIT_LIST_HEAD(&fb_helper->kernel_fb_list); 576 577 fb_helper->crtc_info = malloc(crtc_count * 578 sizeof(struct drm_fb_helper_crtc), DRM_MEM_KMS, M_WAITOK | M_ZERO); 579 580 fb_helper->crtc_count = crtc_count; 581 fb_helper->connector_info = malloc(dev->mode_config.num_connector * 582 sizeof(struct drm_fb_helper_connector *), DRM_MEM_KMS, 583 M_WAITOK | M_ZERO); 584 fb_helper->connector_count = 0; 585 586 for (i = 0; i < crtc_count; i++) { 587 fb_helper->crtc_info[i].mode_set.connectors = 588 malloc(max_conn_count * sizeof(struct drm_connector *), 589 DRM_MEM_KMS, M_WAITOK | M_ZERO); 590 591 fb_helper->crtc_info[i].mode_set.num_connectors = 0; 592 } 593 594 i = 0; 595 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 596 fb_helper->crtc_info[i].crtc_id = crtc->base.id; 597 fb_helper->crtc_info[i].mode_set.crtc = crtc; 598 i++; 599 } 600 fb_helper->conn_limit = max_conn_count; 601 return 0; 602 } 603 604 void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) 605 { 606 if (!list_empty(&fb_helper->kernel_fb_list)) { 607 list_del(&fb_helper->kernel_fb_list); 608 if (list_empty(&kernel_fb_helper_list)) { 609 #if 0 610 printk(KERN_INFO "drm: unregistered panic notifier\n"); 611 atomic_notifier_chain_unregister(&panic_notifier_list, 612 &paniced); 613 unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); 614 #endif 615 } 616 } 617 618 drm_fb_helper_crtc_free(fb_helper); 619 620 } 621 622 #if 0 623 static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, 624 u16 blue, u16 regno, struct fb_info *info) 625 { 626 struct drm_fb_helper *fb_helper = info->par; 627 struct drm_framebuffer *fb = fb_helper->fb; 628 int pindex; 629 630 if (info->fix.visual == FB_VISUAL_trueCOLOR) { 631 u32 *palette; 632 u32 value; 633 /* place color in psuedopalette */ 634 if (regno > 16) 635 return -EINVAL; 636 palette = (u32 *)info->pseudo_palette; 637 red >>= (16 - info->var.red.length); 638 green >>= (16 - info->var.green.length); 639 blue >>= (16 - info->var.blue.length); 640 value = (red << info->var.red.offset) | 641 (green << info->var.green.offset) | 642 (blue << info->var.blue.offset); 643 if (info->var.transp.length > 0) { 644 u32 mask = (1 << info->var.transp.length) - 1; 645 mask <<= info->var.transp.offset; 646 value |= mask; 647 } 648 palette[regno] = value; 649 return 0; 650 } 651 652 pindex = regno; 653 654 if (fb->bits_per_pixel == 16) { 655 pindex = regno << 3; 656 657 if (fb->depth == 16 && regno > 63) 658 return -EINVAL; 659 if (fb->depth == 15 && regno > 31) 660 return -EINVAL; 661 662 if (fb->depth == 16) { 663 u16 r, g, b; 664 int i; 665 if (regno < 32) { 666 for (i = 0; i < 8; i++) 667 fb_helper->funcs->gamma_set(crtc, red, 668 green, blue, pindex + i); 669 } 670 671 fb_helper->funcs->gamma_get(crtc, &r, 672 &g, &b, 673 pindex >> 1); 674 675 for (i = 0; i < 4; i++) 676 fb_helper->funcs->gamma_set(crtc, r, 677 green, b, 678 (pindex >> 1) + i); 679 } 680 } 681 682 if (fb->depth != 16) 683 fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); 684 return 0; 685 } 686 #endif 687 688 #if 0 689 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) 690 { 691 struct drm_fb_helper *fb_helper = info->par; 692 struct drm_crtc_helper_funcs *crtc_funcs; 693 u16 *red, *green, *blue, *transp; 694 struct drm_crtc *crtc; 695 int i, j, rc = 0; 696 int start; 697 698 for (i = 0; i < fb_helper->crtc_count; i++) { 699 crtc = fb_helper->crtc_info[i].mode_set.crtc; 700 crtc_funcs = crtc->helper_private; 701 702 red = cmap->red; 703 green = cmap->green; 704 blue = cmap->blue; 705 transp = cmap->transp; 706 start = cmap->start; 707 708 for (j = 0; j < cmap->len; j++) { 709 u16 hred, hgreen, hblue, htransp = 0xffff; 710 711 hred = *red++; 712 hgreen = *green++; 713 hblue = *blue++; 714 715 if (transp) 716 htransp = *transp++; 717 718 rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); 719 if (rc) 720 return rc; 721 } 722 crtc_funcs->load_lut(crtc); 723 } 724 return rc; 725 } 726 #endif 727 728 #if 0 729 int drm_fb_helper_check_var(struct fb_var_screeninfo *var, 730 struct fb_info *info) 731 { 732 struct drm_fb_helper *fb_helper = info->par; 733 struct drm_framebuffer *fb = fb_helper->fb; 734 int depth; 735 736 if (var->pixclock != 0 || in_dbg_master()) 737 return -EINVAL; 738 739 /* Need to resize the fb object !!! */ 740 if (var->bits_per_pixel > fb->bits_per_pixel || 741 var->xres > fb->width || var->yres > fb->height || 742 var->xres_virtual > fb->width || var->yres_virtual > fb->height) { 743 DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " 744 "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", 745 var->xres, var->yres, var->bits_per_pixel, 746 var->xres_virtual, var->yres_virtual, 747 fb->width, fb->height, fb->bits_per_pixel); 748 return -EINVAL; 749 } 750 751 switch (var->bits_per_pixel) { 752 case 16: 753 depth = (var->green.length == 6) ? 16 : 15; 754 break; 755 case 32: 756 depth = (var->transp.length > 0) ? 32 : 24; 757 break; 758 default: 759 depth = var->bits_per_pixel; 760 break; 761 } 762 763 switch (depth) { 764 case 8: 765 var->red.offset = 0; 766 var->green.offset = 0; 767 var->blue.offset = 0; 768 var->red.length = 8; 769 var->green.length = 8; 770 var->blue.length = 8; 771 var->transp.length = 0; 772 var->transp.offset = 0; 773 break; 774 case 15: 775 var->red.offset = 10; 776 var->green.offset = 5; 777 var->blue.offset = 0; 778 var->red.length = 5; 779 var->green.length = 5; 780 var->blue.length = 5; 781 var->transp.length = 1; 782 var->transp.offset = 15; 783 break; 784 case 16: 785 var->red.offset = 11; 786 var->green.offset = 5; 787 var->blue.offset = 0; 788 var->red.length = 5; 789 var->green.length = 6; 790 var->blue.length = 5; 791 var->transp.length = 0; 792 var->transp.offset = 0; 793 break; 794 case 24: 795 var->red.offset = 16; 796 var->green.offset = 8; 797 var->blue.offset = 0; 798 var->red.length = 8; 799 var->green.length = 8; 800 var->blue.length = 8; 801 var->transp.length = 0; 802 var->transp.offset = 0; 803 break; 804 case 32: 805 var->red.offset = 16; 806 var->green.offset = 8; 807 var->blue.offset = 0; 808 var->red.length = 8; 809 var->green.length = 8; 810 var->blue.length = 8; 811 var->transp.length = 8; 812 var->transp.offset = 24; 813 break; 814 default: 815 return -EINVAL; 816 } 817 return 0; 818 } 819 #endif 820 821 #if 0 822 /* this will let fbcon do the mode init */ 823 int drm_fb_helper_set_par(struct fb_info *info) 824 { 825 struct drm_fb_helper *fb_helper = info->par; 826 struct drm_device *dev = fb_helper->dev; 827 struct fb_var_screeninfo *var = &info->var; 828 struct drm_crtc *crtc; 829 int ret; 830 int i; 831 832 if (var->pixclock != 0) { 833 DRM_ERROR("PIXEL CLOCK SET\n"); 834 return -EINVAL; 835 } 836 837 mutex_lock(&dev->mode_config.mutex); 838 for (i = 0; i < fb_helper->crtc_count; i++) { 839 crtc = fb_helper->crtc_info[i].mode_set.crtc; 840 ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); 841 if (ret) { 842 mutex_unlock(&dev->mode_config.mutex); 843 return ret; 844 } 845 } 846 mutex_unlock(&dev->mode_config.mutex); 847 848 if (fb_helper->delayed_hotplug) { 849 fb_helper->delayed_hotplug = false; 850 drm_fb_helper_hotplug_event(fb_helper); 851 } 852 return 0; 853 } 854 #endif 855 856 #if 0 857 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 858 struct fb_info *info) 859 { 860 struct drm_fb_helper *fb_helper = info->par; 861 struct drm_device *dev = fb_helper->dev; 862 struct drm_mode_set *modeset; 863 struct drm_crtc *crtc; 864 int ret = 0; 865 int i; 866 867 mutex_lock(&dev->mode_config.mutex); 868 for (i = 0; i < fb_helper->crtc_count; i++) { 869 crtc = fb_helper->crtc_info[i].mode_set.crtc; 870 871 modeset = &fb_helper->crtc_info[i].mode_set; 872 873 modeset->x = var->xoffset; 874 modeset->y = var->yoffset; 875 876 if (modeset->num_connectors) { 877 ret = crtc->funcs->set_config(modeset); 878 if (!ret) { 879 info->var.xoffset = var->xoffset; 880 info->var.yoffset = var->yoffset; 881 } 882 } 883 } 884 mutex_unlock(&dev->mode_config.mutex); 885 return ret; 886 } 887 #endif 888 889 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, 890 int preferred_bpp) 891 { 892 int new_fb = 0; 893 int crtc_count = 0; 894 int i; 895 #if 0 896 struct fb_info *info; 897 #endif 898 struct drm_fb_helper_surface_size sizes; 899 int gamma_size = 0; 900 901 memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); 902 sizes.surface_depth = 24; 903 sizes.surface_bpp = 32; 904 sizes.fb_width = (unsigned)-1; 905 sizes.fb_height = (unsigned)-1; 906 907 /* if driver picks 8 or 16 by default use that 908 for both depth/bpp */ 909 if (preferred_bpp != sizes.surface_bpp) { 910 sizes.surface_depth = sizes.surface_bpp = preferred_bpp; 911 } 912 /* first up get a count of crtcs now in use and new min/maxes width/heights */ 913 for (i = 0; i < fb_helper->connector_count; i++) { 914 struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; 915 struct drm_fb_helper_cmdline_mode *cmdline_mode; 916 917 cmdline_mode = &fb_helper_conn->cmdline_mode; 918 919 if (cmdline_mode->bpp_specified) { 920 switch (cmdline_mode->bpp) { 921 case 8: 922 sizes.surface_depth = sizes.surface_bpp = 8; 923 break; 924 case 15: 925 sizes.surface_depth = 15; 926 sizes.surface_bpp = 16; 927 break; 928 case 16: 929 sizes.surface_depth = sizes.surface_bpp = 16; 930 break; 931 case 24: 932 sizes.surface_depth = sizes.surface_bpp = 24; 933 break; 934 case 32: 935 sizes.surface_depth = 24; 936 sizes.surface_bpp = 32; 937 break; 938 } 939 break; 940 } 941 } 942 943 crtc_count = 0; 944 for (i = 0; i < fb_helper->crtc_count; i++) { 945 struct drm_display_mode *desired_mode; 946 desired_mode = fb_helper->crtc_info[i].desired_mode; 947 948 if (desired_mode) { 949 if (gamma_size == 0) 950 gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; 951 if (desired_mode->hdisplay < sizes.fb_width) 952 sizes.fb_width = desired_mode->hdisplay; 953 if (desired_mode->vdisplay < sizes.fb_height) 954 sizes.fb_height = desired_mode->vdisplay; 955 if (desired_mode->hdisplay > sizes.surface_width) 956 sizes.surface_width = desired_mode->hdisplay; 957 if (desired_mode->vdisplay > sizes.surface_height) 958 sizes.surface_height = desired_mode->vdisplay; 959 crtc_count++; 960 } 961 } 962 963 if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { 964 /* hmm everyone went away - assume VGA cable just fell out 965 and will come back later. */ 966 DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); 967 sizes.fb_width = sizes.surface_width = 1024; 968 sizes.fb_height = sizes.surface_height = 768; 969 } 970 971 /* push down into drivers */ 972 new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); 973 if (new_fb < 0) 974 return new_fb; 975 976 #if 0 977 info = fb_helper->fbdev; 978 #endif 979 980 /* set the fb pointer */ 981 for (i = 0; i < fb_helper->crtc_count; i++) { 982 fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; 983 } 984 985 #if 0 986 if (new_fb) { 987 info->var.pixclock = 0; 988 if (register_framebuffer(info) < 0) { 989 return -EINVAL; 990 } 991 992 printf("fb%d: %s frame buffer device\n", info->node, 993 info->fix.id); 994 995 } else { 996 drm_fb_helper_set_par(info); 997 } 998 999 /* Switch back to kernel console on panic */ 1000 /* multi card linked list maybe */ 1001 if (list_empty(&kernel_fb_helper_list)) { 1002 printf("drm: registered panic notifier\n"); 1003 atomic_notifier_chain_register(&panic_notifier_list, 1004 &paniced); 1005 } 1006 if (new_fb) 1007 list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); 1008 #endif 1009 1010 return 0; 1011 } 1012 1013 #if 0 1014 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, 1015 uint32_t depth) 1016 { 1017 info->fix.type = FB_TYPE_PACKED_PIXELS; 1018 info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : 1019 FB_VISUAL_trueCOLOR; 1020 info->fix.mmio_start = 0; 1021 info->fix.mmio_len = 0; 1022 info->fix.type_aux = 0; 1023 info->fix.xpanstep = 1; /* doing it in hw */ 1024 info->fix.ypanstep = 1; /* doing it in hw */ 1025 info->fix.ywrapstep = 0; 1026 info->fix.accel = FB_ACCEL_NONE; 1027 info->fix.type_aux = 0; 1028 1029 info->fix.line_length = pitch; 1030 return; 1031 } 1032 1033 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, 1034 uint32_t fb_width, uint32_t fb_height) 1035 { 1036 struct drm_framebuffer *fb = fb_helper->fb; 1037 info->pseudo_palette = fb_helper->pseudo_palette; 1038 info->var.xres_virtual = fb->width; 1039 info->var.yres_virtual = fb->height; 1040 info->var.bits_per_pixel = fb->bits_per_pixel; 1041 info->var.accel_flags = FB_ACCELF_TEXT; 1042 info->var.xoffset = 0; 1043 info->var.yoffset = 0; 1044 info->var.activate = FB_ACTIVATE_NOW; 1045 info->var.height = -1; 1046 info->var.width = -1; 1047 1048 switch (fb->depth) { 1049 case 8: 1050 info->var.red.offset = 0; 1051 info->var.green.offset = 0; 1052 info->var.blue.offset = 0; 1053 info->var.red.length = 8; /* 8bit DAC */ 1054 info->var.green.length = 8; 1055 info->var.blue.length = 8; 1056 info->var.transp.offset = 0; 1057 info->var.transp.length = 0; 1058 break; 1059 case 15: 1060 info->var.red.offset = 10; 1061 info->var.green.offset = 5; 1062 info->var.blue.offset = 0; 1063 info->var.red.length = 5; 1064 info->var.green.length = 5; 1065 info->var.blue.length = 5; 1066 info->var.transp.offset = 15; 1067 info->var.transp.length = 1; 1068 break; 1069 case 16: 1070 info->var.red.offset = 11; 1071 info->var.green.offset = 5; 1072 info->var.blue.offset = 0; 1073 info->var.red.length = 5; 1074 info->var.green.length = 6; 1075 info->var.blue.length = 5; 1076 info->var.transp.offset = 0; 1077 break; 1078 case 24: 1079 info->var.red.offset = 16; 1080 info->var.green.offset = 8; 1081 info->var.blue.offset = 0; 1082 info->var.red.length = 8; 1083 info->var.green.length = 8; 1084 info->var.blue.length = 8; 1085 info->var.transp.offset = 0; 1086 info->var.transp.length = 0; 1087 break; 1088 case 32: 1089 info->var.red.offset = 16; 1090 info->var.green.offset = 8; 1091 info->var.blue.offset = 0; 1092 info->var.red.length = 8; 1093 info->var.green.length = 8; 1094 info->var.blue.length = 8; 1095 info->var.transp.offset = 24; 1096 info->var.transp.length = 8; 1097 break; 1098 default: 1099 break; 1100 } 1101 1102 info->var.xres = fb_width; 1103 info->var.yres = fb_height; 1104 } 1105 #endif 1106 1107 static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, 1108 uint32_t maxX, 1109 uint32_t maxY) 1110 { 1111 struct drm_connector *connector; 1112 int count = 0; 1113 int i; 1114 1115 for (i = 0; i < fb_helper->connector_count; i++) { 1116 connector = fb_helper->connector_info[i]->connector; 1117 count += connector->funcs->fill_modes(connector, maxX, maxY); 1118 } 1119 1120 return count; 1121 } 1122 1123 static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) 1124 { 1125 struct drm_display_mode *mode; 1126 1127 list_for_each_entry(mode, &fb_connector->connector->modes, head) { 1128 if (drm_mode_width(mode) > width || 1129 drm_mode_height(mode) > height) 1130 continue; 1131 if (mode->type & DRM_MODE_TYPE_PREFERRED) 1132 return mode; 1133 } 1134 return NULL; 1135 } 1136 1137 static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) 1138 { 1139 struct drm_fb_helper_cmdline_mode *cmdline_mode; 1140 cmdline_mode = &fb_connector->cmdline_mode; 1141 return cmdline_mode->specified; 1142 } 1143 1144 static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, 1145 int width, int height) 1146 { 1147 struct drm_cmdline_mode *cmdline_mode; 1148 struct drm_display_mode *mode = NULL; 1149 1150 cmdline_mode = &fb_helper_conn->cmdline_mode1; 1151 if (cmdline_mode->specified == false && 1152 !drm_fetch_cmdline_mode_from_kenv(fb_helper_conn->connector, 1153 cmdline_mode)) 1154 return (NULL); 1155 1156 /* attempt to find a matching mode in the list of modes 1157 * we have gotten so far, if not add a CVT mode that conforms 1158 */ 1159 if (cmdline_mode->rb || cmdline_mode->margins) 1160 goto create_mode; 1161 1162 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1163 /* check width/height */ 1164 if (mode->hdisplay != cmdline_mode->xres || 1165 mode->vdisplay != cmdline_mode->yres) 1166 continue; 1167 1168 if (cmdline_mode->refresh_specified) { 1169 if (mode->vrefresh != cmdline_mode->refresh) 1170 continue; 1171 } 1172 1173 if (cmdline_mode->interlace) { 1174 if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) 1175 continue; 1176 } 1177 return mode; 1178 } 1179 1180 create_mode: 1181 if (cmdline_mode->cvt) 1182 mode = drm_cvt_mode(fb_helper_conn->connector->dev, 1183 cmdline_mode->xres, cmdline_mode->yres, 1184 cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, 1185 cmdline_mode->rb, cmdline_mode->interlace, 1186 cmdline_mode->margins); 1187 else 1188 mode = drm_gtf_mode(fb_helper_conn->connector->dev, 1189 cmdline_mode->xres, cmdline_mode->yres, 1190 cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, 1191 cmdline_mode->interlace, 1192 cmdline_mode->margins); 1193 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 1194 list_add(&mode->head, &fb_helper_conn->connector->modes); 1195 return mode; 1196 } 1197 1198 static bool drm_connector_enabled(struct drm_connector *connector, bool strict) 1199 { 1200 bool enable; 1201 1202 if (strict) { 1203 enable = connector->status == connector_status_connected; 1204 } else { 1205 enable = connector->status != connector_status_disconnected; 1206 } 1207 return enable; 1208 } 1209 1210 static void drm_enable_connectors(struct drm_fb_helper *fb_helper, 1211 bool *enabled) 1212 { 1213 bool any_enabled = false; 1214 struct drm_connector *connector; 1215 int i = 0; 1216 1217 for (i = 0; i < fb_helper->connector_count; i++) { 1218 connector = fb_helper->connector_info[i]->connector; 1219 enabled[i] = drm_connector_enabled(connector, true); 1220 DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, 1221 enabled[i] ? "yes" : "no"); 1222 any_enabled |= enabled[i]; 1223 } 1224 1225 if (any_enabled) 1226 return; 1227 1228 for (i = 0; i < fb_helper->connector_count; i++) { 1229 connector = fb_helper->connector_info[i]->connector; 1230 enabled[i] = drm_connector_enabled(connector, false); 1231 } 1232 } 1233 1234 static bool drm_target_cloned(struct drm_fb_helper *fb_helper, 1235 struct drm_display_mode **modes, 1236 bool *enabled, int width, int height) 1237 { 1238 int count, i, j; 1239 bool can_clone = false; 1240 struct drm_fb_helper_connector *fb_helper_conn; 1241 struct drm_display_mode *dmt_mode, *mode; 1242 1243 /* only contemplate cloning in the single crtc case */ 1244 if (fb_helper->crtc_count > 1) 1245 return false; 1246 1247 count = 0; 1248 for (i = 0; i < fb_helper->connector_count; i++) { 1249 if (enabled[i]) 1250 count++; 1251 } 1252 1253 /* only contemplate cloning if more than one connector is enabled */ 1254 if (count <= 1) 1255 return false; 1256 1257 /* check the command line or if nothing common pick 1024x768 */ 1258 can_clone = true; 1259 for (i = 0; i < fb_helper->connector_count; i++) { 1260 if (!enabled[i]) 1261 continue; 1262 fb_helper_conn = fb_helper->connector_info[i]; 1263 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1264 if (!modes[i]) { 1265 can_clone = false; 1266 break; 1267 } 1268 for (j = 0; j < i; j++) { 1269 if (!enabled[j]) 1270 continue; 1271 if (!drm_mode_equal(modes[j], modes[i])) 1272 can_clone = false; 1273 } 1274 } 1275 1276 if (can_clone) { 1277 DRM_DEBUG_KMS("can clone using command line\n"); 1278 return true; 1279 } 1280 1281 /* try and find a 1024x768 mode on each connector */ 1282 can_clone = true; 1283 dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60); 1284 1285 for (i = 0; i < fb_helper->connector_count; i++) { 1286 1287 if (!enabled[i]) 1288 continue; 1289 1290 fb_helper_conn = fb_helper->connector_info[i]; 1291 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1292 if (drm_mode_equal(mode, dmt_mode)) 1293 modes[i] = mode; 1294 } 1295 if (!modes[i]) 1296 can_clone = false; 1297 } 1298 1299 if (can_clone) { 1300 DRM_DEBUG_KMS("can clone using 1024x768\n"); 1301 return true; 1302 } 1303 DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); 1304 return false; 1305 } 1306 1307 static bool drm_target_preferred(struct drm_fb_helper *fb_helper, 1308 struct drm_display_mode **modes, 1309 bool *enabled, int width, int height) 1310 { 1311 struct drm_fb_helper_connector *fb_helper_conn; 1312 int i; 1313 1314 for (i = 0; i < fb_helper->connector_count; i++) { 1315 fb_helper_conn = fb_helper->connector_info[i]; 1316 1317 if (enabled[i] == false) 1318 continue; 1319 1320 DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", 1321 fb_helper_conn->connector->base.id); 1322 1323 /* got for command line mode first */ 1324 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1325 if (!modes[i]) { 1326 DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", 1327 fb_helper_conn->connector->base.id); 1328 modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); 1329 } 1330 /* No preferred modes, pick one off the list */ 1331 if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { 1332 list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) 1333 break; 1334 } 1335 DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : 1336 "none"); 1337 } 1338 return true; 1339 } 1340 1341 static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, 1342 struct drm_fb_helper_crtc **best_crtcs, 1343 struct drm_display_mode **modes, 1344 int n, int width, int height) 1345 { 1346 int c, o; 1347 struct drm_device *dev = fb_helper->dev; 1348 struct drm_connector *connector; 1349 struct drm_connector_helper_funcs *connector_funcs; 1350 struct drm_encoder *encoder; 1351 struct drm_fb_helper_crtc *best_crtc; 1352 int my_score, best_score, score; 1353 struct drm_fb_helper_crtc **crtcs, *crtc; 1354 struct drm_fb_helper_connector *fb_helper_conn; 1355 1356 if (n == fb_helper->connector_count) 1357 return 0; 1358 1359 fb_helper_conn = fb_helper->connector_info[n]; 1360 connector = fb_helper_conn->connector; 1361 1362 best_crtcs[n] = NULL; 1363 best_crtc = NULL; 1364 best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); 1365 if (modes[n] == NULL) 1366 return best_score; 1367 1368 crtcs = malloc(dev->mode_config.num_connector * 1369 sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, 1370 M_WAITOK | M_ZERO); 1371 1372 my_score = 1; 1373 if (connector->status == connector_status_connected) 1374 my_score++; 1375 if (drm_has_cmdline_mode(fb_helper_conn)) 1376 my_score++; 1377 if (drm_has_preferred_mode(fb_helper_conn, width, height)) 1378 my_score++; 1379 1380 connector_funcs = connector->helper_private; 1381 encoder = connector_funcs->best_encoder(connector); 1382 if (!encoder) 1383 goto out; 1384 1385 /* select a crtc for this connector and then attempt to configure 1386 remaining connectors */ 1387 for (c = 0; c < fb_helper->crtc_count; c++) { 1388 crtc = &fb_helper->crtc_info[c]; 1389 1390 if ((encoder->possible_crtcs & (1 << c)) == 0) { 1391 continue; 1392 } 1393 1394 for (o = 0; o < n; o++) 1395 if (best_crtcs[o] == crtc) 1396 break; 1397 1398 if (o < n) { 1399 /* ignore cloning unless only a single crtc */ 1400 if (fb_helper->crtc_count > 1) 1401 continue; 1402 1403 if (!drm_mode_equal(modes[o], modes[n])) 1404 continue; 1405 } 1406 1407 crtcs[n] = crtc; 1408 memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); 1409 score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, 1410 width, height); 1411 if (score > best_score) { 1412 best_crtc = crtc; 1413 best_score = score; 1414 memcpy(best_crtcs, crtcs, 1415 dev->mode_config.num_connector * 1416 sizeof(struct drm_fb_helper_crtc *)); 1417 } 1418 } 1419 out: 1420 free(crtcs, DRM_MEM_KMS); 1421 return best_score; 1422 } 1423 1424 static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) 1425 { 1426 struct drm_device *dev = fb_helper->dev; 1427 struct drm_fb_helper_crtc **crtcs; 1428 struct drm_display_mode **modes; 1429 struct drm_encoder *encoder; 1430 struct drm_mode_set *modeset; 1431 bool *enabled; 1432 int width, height; 1433 int i, ret; 1434 1435 DRM_DEBUG_KMS("\n"); 1436 1437 width = dev->mode_config.max_width; 1438 height = dev->mode_config.max_height; 1439 1440 /* clean out all the encoder/crtc combos */ 1441 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 1442 encoder->crtc = NULL; 1443 } 1444 1445 crtcs = malloc(dev->mode_config.num_connector * 1446 sizeof(struct drm_fb_helper_crtc *), DRM_MEM_KMS, 1447 M_WAITOK | M_ZERO); 1448 modes = malloc(dev->mode_config.num_connector * 1449 sizeof(struct drm_display_mode *), DRM_MEM_KMS, 1450 M_WAITOK | M_ZERO); 1451 enabled = malloc(dev->mode_config.num_connector * 1452 sizeof(bool), DRM_MEM_KMS, M_WAITOK | M_ZERO); 1453 1454 drm_enable_connectors(fb_helper, enabled); 1455 1456 ret = drm_target_cloned(fb_helper, modes, enabled, width, height); 1457 if (!ret) { 1458 ret = drm_target_preferred(fb_helper, modes, enabled, width, height); 1459 if (!ret) 1460 DRM_ERROR("Unable to find initial modes\n"); 1461 } 1462 1463 DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); 1464 1465 drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); 1466 1467 /* need to set the modesets up here for use later */ 1468 /* fill out the connector<->crtc mappings into the modesets */ 1469 for (i = 0; i < fb_helper->crtc_count; i++) { 1470 modeset = &fb_helper->crtc_info[i].mode_set; 1471 modeset->num_connectors = 0; 1472 } 1473 1474 for (i = 0; i < fb_helper->connector_count; i++) { 1475 struct drm_display_mode *mode = modes[i]; 1476 struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; 1477 modeset = &fb_crtc->mode_set; 1478 1479 if (mode && fb_crtc) { 1480 DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", 1481 mode->name, fb_crtc->mode_set.crtc->base.id); 1482 fb_crtc->desired_mode = mode; 1483 if (modeset->mode) 1484 drm_mode_destroy(dev, modeset->mode); 1485 modeset->mode = drm_mode_duplicate(dev, 1486 fb_crtc->desired_mode); 1487 modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; 1488 } 1489 } 1490 1491 free(crtcs, DRM_MEM_KMS); 1492 free(modes, DRM_MEM_KMS); 1493 free(enabled, DRM_MEM_KMS); 1494 } 1495 1496 /** 1497 * drm_helper_initial_config - setup a sane initial connector configuration 1498 * @dev: DRM device 1499 * 1500 * LOCKING: 1501 * Called at init time, must take mode config lock. 1502 * 1503 * Scan the CRTCs and connectors and try to put together an initial setup. 1504 * At the moment, this is a cloned configuration across all heads with 1505 * a new framebuffer object as the backing store. 1506 * 1507 * RETURNS: 1508 * Zero if everything went ok, nonzero otherwise. 1509 */ 1510 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) 1511 { 1512 struct drm_device *dev = fb_helper->dev; 1513 int count = 0; 1514 1515 /* disable all the possible outputs/crtcs before entering KMS mode */ 1516 drm_helper_disable_unused_functions(fb_helper->dev); 1517 1518 drm_fb_helper_parse_command_line(fb_helper); 1519 1520 count = drm_fb_helper_probe_connector_modes(fb_helper, 1521 dev->mode_config.max_width, 1522 dev->mode_config.max_height); 1523 /* 1524 * we shouldn't end up with no modes here. 1525 */ 1526 if (count == 0) { 1527 printf("No connectors reported connected with modes\n"); 1528 } 1529 drm_setup_crtcs(fb_helper); 1530 1531 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); 1532 } 1533 1534 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) 1535 { 1536 struct drm_device *dev = fb_helper->dev; 1537 int count = 0; 1538 u32 max_width, max_height, bpp_sel; 1539 bool bound = false, crtcs_bound = false; 1540 struct drm_crtc *crtc; 1541 1542 if (!fb_helper->fb) 1543 return 0; 1544 1545 sx_xlock(&dev->mode_config.mutex); 1546 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 1547 if (crtc->fb) 1548 crtcs_bound = true; 1549 if (crtc->fb == fb_helper->fb) 1550 bound = true; 1551 } 1552 1553 if (!bound && crtcs_bound) { 1554 fb_helper->delayed_hotplug = true; 1555 sx_xunlock(&dev->mode_config.mutex); 1556 return 0; 1557 } 1558 DRM_DEBUG_KMS("\n"); 1559 1560 max_width = fb_helper->fb->width; 1561 max_height = fb_helper->fb->height; 1562 bpp_sel = fb_helper->fb->bits_per_pixel; 1563 1564 count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, 1565 max_height); 1566 drm_setup_crtcs(fb_helper); 1567 sx_xunlock(&dev->mode_config.mutex); 1568 1569 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); 1570 } 1571 1572