1 /* 2 * Copyright (c) 2006-2008 Intel Corporation 3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> 4 * Copyright (c) 2008 Red Hat Inc. 5 * 6 * DRM core CRTC related 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 * Keith Packard 28 * Eric Anholt <eric@anholt.net> 29 * Dave Airlie <airlied@linux.ie> 30 * Jesse Barnes <jesse.barnes@intel.com> 31 */ 32 #include <linux/ctype.h> 33 #include <linux/list.h> 34 #include <linux/slab.h> 35 #include <linux/export.h> 36 #include <linux/dma-fence.h> 37 #include <drm/drmP.h> 38 #include <drm/drm_crtc.h> 39 #include <drm/drm_edid.h> 40 #include <drm/drm_fourcc.h> 41 #include <drm/drm_modeset_lock.h> 42 #include <drm/drm_atomic.h> 43 #include <drm/drm_auth.h> 44 #include <drm/drm_debugfs_crc.h> 45 46 #include "drm_crtc_internal.h" 47 #include "drm_internal.h" 48 49 /** 50 * drm_crtc_force_disable - Forcibly turn off a CRTC 51 * @crtc: CRTC to turn off 52 * 53 * Returns: 54 * Zero on success, error code on failure. 55 */ 56 int drm_crtc_force_disable(struct drm_crtc *crtc) 57 { 58 struct drm_mode_set set = { 59 .crtc = crtc, 60 }; 61 62 return drm_mode_set_config_internal(&set); 63 } 64 EXPORT_SYMBOL(drm_crtc_force_disable); 65 66 /** 67 * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs 68 * @dev: DRM device whose CRTCs to turn off 69 * 70 * Drivers may want to call this on unload to ensure that all displays are 71 * unlit and the GPU is in a consistent, low power state. Takes modeset locks. 72 * 73 * Returns: 74 * Zero on success, error code on failure. 75 */ 76 int drm_crtc_force_disable_all(struct drm_device *dev) 77 { 78 struct drm_crtc *crtc; 79 int ret = 0; 80 81 drm_modeset_lock_all(dev); 82 drm_for_each_crtc(crtc, dev) 83 if (crtc->enabled) { 84 ret = drm_crtc_force_disable(crtc); 85 if (ret) 86 goto out; 87 } 88 out: 89 drm_modeset_unlock_all(dev); 90 return ret; 91 } 92 EXPORT_SYMBOL(drm_crtc_force_disable_all); 93 94 static unsigned int drm_num_crtcs(struct drm_device *dev) 95 { 96 unsigned int num = 0; 97 struct drm_crtc *tmp; 98 99 drm_for_each_crtc(tmp, dev) { 100 num++; 101 } 102 103 return num; 104 } 105 106 int drm_crtc_register_all(struct drm_device *dev) 107 { 108 struct drm_crtc *crtc; 109 int ret = 0; 110 111 drm_for_each_crtc(crtc, dev) { 112 if (drm_debugfs_crtc_add(crtc)) 113 DRM_ERROR("Failed to initialize debugfs entry for CRTC '%s'.\n", 114 crtc->name); 115 116 if (crtc->funcs->late_register) 117 ret = crtc->funcs->late_register(crtc); 118 if (ret) 119 return ret; 120 } 121 122 return 0; 123 } 124 125 void drm_crtc_unregister_all(struct drm_device *dev) 126 { 127 struct drm_crtc *crtc; 128 129 drm_for_each_crtc(crtc, dev) { 130 if (crtc->funcs->early_unregister) 131 crtc->funcs->early_unregister(crtc); 132 drm_debugfs_crtc_remove(crtc); 133 } 134 } 135 136 static int drm_crtc_crc_init(struct drm_crtc *crtc) 137 { 138 #ifdef CONFIG_DEBUG_FS 139 spin_lock_init(&crtc->crc.lock); 140 init_waitqueue_head(&crtc->crc.wq); 141 crtc->crc.source = kstrdup("auto", GFP_KERNEL); 142 if (!crtc->crc.source) 143 return -ENOMEM; 144 #endif 145 return 0; 146 } 147 148 static void drm_crtc_crc_fini(struct drm_crtc *crtc) 149 { 150 #ifdef CONFIG_DEBUG_FS 151 kfree(crtc->crc.source); 152 #endif 153 } 154 155 static const struct dma_fence_ops drm_crtc_fence_ops; 156 157 static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) 158 { 159 BUG_ON(fence->ops != &drm_crtc_fence_ops); 160 return container_of(fence->lock, struct drm_crtc, fence_lock); 161 } 162 163 static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) 164 { 165 struct drm_crtc *crtc = fence_to_crtc(fence); 166 167 return crtc->dev->driver->name; 168 } 169 170 static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence) 171 { 172 struct drm_crtc *crtc = fence_to_crtc(fence); 173 174 return crtc->timeline_name; 175 } 176 177 static bool drm_crtc_fence_enable_signaling(struct dma_fence *fence) 178 { 179 return true; 180 } 181 182 static const struct dma_fence_ops drm_crtc_fence_ops = { 183 .get_driver_name = drm_crtc_fence_get_driver_name, 184 .get_timeline_name = drm_crtc_fence_get_timeline_name, 185 .enable_signaling = drm_crtc_fence_enable_signaling, 186 .wait = dma_fence_default_wait, 187 }; 188 189 struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc) 190 { 191 struct dma_fence *fence; 192 193 fence = kzalloc(sizeof(*fence), GFP_KERNEL); 194 if (!fence) 195 return NULL; 196 197 dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock, 198 crtc->fence_context, ++crtc->fence_seqno); 199 200 return fence; 201 } 202 203 /** 204 * drm_crtc_init_with_planes - Initialise a new CRTC object with 205 * specified primary and cursor planes. 206 * @dev: DRM device 207 * @crtc: CRTC object to init 208 * @primary: Primary plane for CRTC 209 * @cursor: Cursor plane for CRTC 210 * @funcs: callbacks for the new CRTC 211 * @name: printf style format string for the CRTC name, or NULL for default name 212 * 213 * Inits a new object created as base part of a driver crtc object. Drivers 214 * should use this function instead of drm_crtc_init(), which is only provided 215 * for backwards compatibility with drivers which do not yet support universal 216 * planes). For really simple hardware which has only 1 plane look at 217 * drm_simple_display_pipe_init() instead. 218 * 219 * Returns: 220 * Zero on success, error code on failure. 221 */ 222 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, 223 struct drm_plane *primary, 224 struct drm_plane *cursor, 225 const struct drm_crtc_funcs *funcs, 226 const char *name, ...) 227 { 228 struct drm_mode_config *config = &dev->mode_config; 229 int ret; 230 231 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); 232 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); 233 234 crtc->dev = dev; 235 crtc->funcs = funcs; 236 237 INIT_LIST_HEAD(&crtc->commit_list); 238 lockinit(&crtc->commit_lock, "dccl", 0, 0); 239 240 drm_modeset_lock_init(&crtc->mutex); 241 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 242 if (ret) 243 return ret; 244 245 if (name) { 246 va_list ap; 247 248 va_start(ap, name); 249 crtc->name = kvasprintf(GFP_KERNEL, name, ap); 250 va_end(ap); 251 } else { 252 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", 253 drm_num_crtcs(dev)); 254 } 255 if (!crtc->name) { 256 drm_mode_object_unregister(dev, &crtc->base); 257 return -ENOMEM; 258 } 259 260 crtc->fence_context = dma_fence_context_alloc(1); 261 lockinit(&crtc->fence_lock, "drmcfl", 0, 0); 262 snprintf(crtc->timeline_name, sizeof(crtc->timeline_name), 263 "CRTC:%d-%s", crtc->base.id, crtc->name); 264 265 crtc->base.properties = &crtc->properties; 266 267 list_add_tail(&crtc->head, &config->crtc_list); 268 crtc->index = config->num_crtc++; 269 270 crtc->primary = primary; 271 crtc->cursor = cursor; 272 if (primary && !primary->possible_crtcs) 273 primary->possible_crtcs = 1 << drm_crtc_index(crtc); 274 if (cursor && !cursor->possible_crtcs) 275 cursor->possible_crtcs = 1 << drm_crtc_index(crtc); 276 277 ret = drm_crtc_crc_init(crtc); 278 if (ret) { 279 drm_mode_object_unregister(dev, &crtc->base); 280 return ret; 281 } 282 283 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { 284 drm_object_attach_property(&crtc->base, config->prop_active, 0); 285 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); 286 drm_object_attach_property(&crtc->base, 287 config->prop_out_fence_ptr, 0); 288 } 289 290 return 0; 291 } 292 EXPORT_SYMBOL(drm_crtc_init_with_planes); 293 294 /** 295 * drm_crtc_cleanup - Clean up the core crtc usage 296 * @crtc: CRTC to cleanup 297 * 298 * This function cleans up @crtc and removes it from the DRM mode setting 299 * core. Note that the function does *not* free the crtc structure itself, 300 * this is the responsibility of the caller. 301 */ 302 void drm_crtc_cleanup(struct drm_crtc *crtc) 303 { 304 struct drm_device *dev = crtc->dev; 305 306 /* Note that the crtc_list is considered to be static; should we 307 * remove the drm_crtc at runtime we would have to decrement all 308 * the indices on the drm_crtc after us in the crtc_list. 309 */ 310 311 drm_crtc_crc_fini(crtc); 312 313 kfree(crtc->gamma_store); 314 crtc->gamma_store = NULL; 315 316 drm_modeset_lock_fini(&crtc->mutex); 317 318 drm_mode_object_unregister(dev, &crtc->base); 319 list_del(&crtc->head); 320 dev->mode_config.num_crtc--; 321 322 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); 323 if (crtc->state && crtc->funcs->atomic_destroy_state) 324 crtc->funcs->atomic_destroy_state(crtc, crtc->state); 325 326 kfree(crtc->name); 327 328 memset(crtc, 0, sizeof(*crtc)); 329 } 330 EXPORT_SYMBOL(drm_crtc_cleanup); 331 332 /** 333 * drm_connector_index - find the index of a registered connector 334 * @connector: connector to find index for 335 * 336 * Given a registered connector, return the index of that connector within a DRM 337 * device's list of connectors. 338 */ 339 unsigned int drm_connector_index(struct drm_connector *connector) 340 { 341 unsigned int index = 0; 342 struct drm_connector *tmp; 343 struct drm_mode_config *config = &connector->dev->mode_config; 344 345 WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); 346 347 drm_for_each_connector(tmp, connector->dev) { 348 if (tmp == connector) 349 return index; 350 351 index++; 352 } 353 354 BUG(); 355 } 356 EXPORT_SYMBOL(drm_connector_index); 357 358 /** 359 * drm_mode_getcrtc - get CRTC configuration 360 * @dev: drm device for the ioctl 361 * @data: data pointer for the ioctl 362 * @file_priv: drm file for the ioctl call 363 * 364 * Construct a CRTC configuration structure to return to the user. 365 * 366 * Called by the user via ioctl. 367 * 368 * Returns: 369 * Zero on success, negative errno on failure. 370 */ 371 int drm_mode_getcrtc(struct drm_device *dev, 372 void *data, struct drm_file *file_priv) 373 { 374 struct drm_mode_crtc *crtc_resp = data; 375 struct drm_crtc *crtc; 376 377 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 378 return -EINVAL; 379 380 crtc = drm_crtc_find(dev, crtc_resp->crtc_id); 381 if (!crtc) 382 return -ENOENT; 383 384 drm_modeset_lock_crtc(crtc, crtc->primary); 385 crtc_resp->gamma_size = crtc->gamma_size; 386 if (crtc->primary->fb) 387 crtc_resp->fb_id = crtc->primary->fb->base.id; 388 else 389 crtc_resp->fb_id = 0; 390 391 if (crtc->state) { 392 crtc_resp->x = crtc->primary->state->src_x >> 16; 393 crtc_resp->y = crtc->primary->state->src_y >> 16; 394 if (crtc->state->enable) { 395 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); 396 crtc_resp->mode_valid = 1; 397 398 } else { 399 crtc_resp->mode_valid = 0; 400 } 401 } else { 402 crtc_resp->x = crtc->x; 403 crtc_resp->y = crtc->y; 404 if (crtc->enabled) { 405 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); 406 crtc_resp->mode_valid = 1; 407 408 } else { 409 crtc_resp->mode_valid = 0; 410 } 411 } 412 drm_modeset_unlock_crtc(crtc); 413 414 return 0; 415 } 416 417 /** 418 * drm_mode_set_config_internal - helper to call ->set_config 419 * @set: modeset config to set 420 * 421 * This is a little helper to wrap internal calls to the ->set_config driver 422 * interface. The only thing it adds is correct refcounting dance. 423 * 424 * Returns: 425 * Zero on success, negative errno on failure. 426 */ 427 int drm_mode_set_config_internal(struct drm_mode_set *set) 428 { 429 struct drm_crtc *crtc = set->crtc; 430 struct drm_framebuffer *fb; 431 struct drm_crtc *tmp; 432 int ret; 433 434 /* 435 * NOTE: ->set_config can also disable other crtcs (if we steal all 436 * connectors from it), hence we need to refcount the fbs across all 437 * crtcs. Atomic modeset will have saner semantics ... 438 */ 439 drm_for_each_crtc(tmp, crtc->dev) 440 tmp->primary->old_fb = tmp->primary->fb; 441 442 fb = set->fb; 443 444 ret = crtc->funcs->set_config(set); 445 if (ret == 0) { 446 crtc->primary->crtc = crtc; 447 crtc->primary->fb = fb; 448 } 449 450 drm_for_each_crtc(tmp, crtc->dev) { 451 if (tmp->primary->fb) 452 drm_framebuffer_reference(tmp->primary->fb); 453 if (tmp->primary->old_fb) 454 drm_framebuffer_unreference(tmp->primary->old_fb); 455 tmp->primary->old_fb = NULL; 456 } 457 458 return ret; 459 } 460 EXPORT_SYMBOL(drm_mode_set_config_internal); 461 462 /** 463 * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode 464 * @mode: mode to query 465 * @hdisplay: hdisplay value to fill in 466 * @vdisplay: vdisplay value to fill in 467 * 468 * The vdisplay value will be doubled if the specified mode is a stereo mode of 469 * the appropriate layout. 470 */ 471 void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, 472 int *hdisplay, int *vdisplay) 473 { 474 struct drm_display_mode adjusted; 475 476 drm_mode_copy(&adjusted, mode); 477 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY); 478 *hdisplay = adjusted.crtc_hdisplay; 479 *vdisplay = adjusted.crtc_vdisplay; 480 } 481 EXPORT_SYMBOL(drm_crtc_get_hv_timing); 482 483 /** 484 * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the 485 * CRTC viewport 486 * @crtc: CRTC that framebuffer will be displayed on 487 * @x: x panning 488 * @y: y panning 489 * @mode: mode that framebuffer will be displayed under 490 * @fb: framebuffer to check size of 491 */ 492 int drm_crtc_check_viewport(const struct drm_crtc *crtc, 493 int x, int y, 494 const struct drm_display_mode *mode, 495 const struct drm_framebuffer *fb) 496 497 { 498 int hdisplay, vdisplay; 499 500 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay); 501 502 if (crtc->state && 503 drm_rotation_90_or_270(crtc->primary->state->rotation)) 504 swap(hdisplay, vdisplay); 505 506 return drm_framebuffer_check_src_coords(x << 16, y << 16, 507 hdisplay << 16, vdisplay << 16, 508 fb); 509 } 510 EXPORT_SYMBOL(drm_crtc_check_viewport); 511 512 /** 513 * drm_mode_setcrtc - set CRTC configuration 514 * @dev: drm device for the ioctl 515 * @data: data pointer for the ioctl 516 * @file_priv: drm file for the ioctl call 517 * 518 * Build a new CRTC configuration based on user request. 519 * 520 * Called by the user via ioctl. 521 * 522 * Returns: 523 * Zero on success, negative errno on failure. 524 */ 525 int drm_mode_setcrtc(struct drm_device *dev, void *data, 526 struct drm_file *file_priv) 527 { 528 struct drm_mode_config *config = &dev->mode_config; 529 struct drm_mode_crtc *crtc_req = data; 530 struct drm_crtc *crtc; 531 struct drm_connector **connector_set = NULL, *connector; 532 struct drm_framebuffer *fb = NULL; 533 struct drm_display_mode *mode = NULL; 534 struct drm_mode_set set; 535 uint32_t __user *set_connectors_ptr; 536 int ret; 537 int i; 538 539 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 540 return -EINVAL; 541 542 /* 543 * Universal plane src offsets are only 16.16, prevent havoc for 544 * drivers using universal plane code internally. 545 */ 546 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) 547 return -ERANGE; 548 549 drm_modeset_lock_all(dev); 550 crtc = drm_crtc_find(dev, crtc_req->crtc_id); 551 if (!crtc) { 552 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 553 ret = -ENOENT; 554 goto out; 555 } 556 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); 557 558 if (crtc_req->mode_valid) { 559 /* If we have a mode we need a framebuffer. */ 560 /* If we pass -1, set the mode with the currently bound fb */ 561 if (crtc_req->fb_id == -1) { 562 if (!crtc->primary->fb) { 563 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 564 ret = -EINVAL; 565 goto out; 566 } 567 fb = crtc->primary->fb; 568 /* Make refcounting symmetric with the lookup path. */ 569 drm_framebuffer_reference(fb); 570 } else { 571 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); 572 if (!fb) { 573 DRM_DEBUG_KMS("Unknown FB ID%d\n", 574 crtc_req->fb_id); 575 ret = -ENOENT; 576 goto out; 577 } 578 } 579 580 mode = drm_mode_create(dev); 581 if (!mode) { 582 ret = -ENOMEM; 583 goto out; 584 } 585 586 ret = drm_mode_convert_umode(mode, &crtc_req->mode); 587 if (ret) { 588 DRM_DEBUG_KMS("Invalid mode\n"); 589 goto out; 590 } 591 592 /* 593 * Check whether the primary plane supports the fb pixel format. 594 * Drivers not implementing the universal planes API use a 595 * default formats list provided by the DRM core which doesn't 596 * match real hardware capabilities. Skip the check in that 597 * case. 598 */ 599 if (!crtc->primary->format_default) { 600 ret = drm_plane_check_pixel_format(crtc->primary, 601 fb->pixel_format); 602 if (ret) { 603 struct drm_format_name_buf format_name; 604 DRM_DEBUG_KMS("Invalid pixel format %s\n", 605 drm_get_format_name(fb->pixel_format, 606 &format_name)); 607 goto out; 608 } 609 } 610 611 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, 612 mode, fb); 613 if (ret) 614 goto out; 615 616 } 617 618 if (crtc_req->count_connectors == 0 && mode) { 619 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 620 ret = -EINVAL; 621 goto out; 622 } 623 624 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 625 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 626 crtc_req->count_connectors); 627 ret = -EINVAL; 628 goto out; 629 } 630 631 if (crtc_req->count_connectors > 0) { 632 u32 out_id; 633 634 /* Avoid unbounded kernel memory allocation */ 635 if (crtc_req->count_connectors > config->num_connector) { 636 ret = -EINVAL; 637 goto out; 638 } 639 640 connector_set = kmalloc_array(crtc_req->count_connectors, 641 sizeof(struct drm_connector *), 642 GFP_KERNEL); 643 if (!connector_set) { 644 ret = -ENOMEM; 645 goto out; 646 } 647 648 for (i = 0; i < crtc_req->count_connectors; i++) { 649 connector_set[i] = NULL; 650 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 651 if (get_user(out_id, &set_connectors_ptr[i])) { 652 ret = -EFAULT; 653 goto out; 654 } 655 656 connector = drm_connector_lookup(dev, out_id); 657 if (!connector) { 658 DRM_DEBUG_KMS("Connector id %d unknown\n", 659 out_id); 660 ret = -ENOENT; 661 goto out; 662 } 663 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 664 connector->base.id, 665 connector->name); 666 667 connector_set[i] = connector; 668 } 669 } 670 671 set.crtc = crtc; 672 set.x = crtc_req->x; 673 set.y = crtc_req->y; 674 set.mode = mode; 675 set.connectors = connector_set; 676 set.num_connectors = crtc_req->count_connectors; 677 set.fb = fb; 678 ret = drm_mode_set_config_internal(&set); 679 680 out: 681 if (fb) 682 drm_framebuffer_unreference(fb); 683 684 if (connector_set) { 685 for (i = 0; i < crtc_req->count_connectors; i++) { 686 if (connector_set[i]) 687 drm_connector_unreference(connector_set[i]); 688 } 689 } 690 kfree(connector_set); 691 drm_mode_destroy(dev, mode); 692 drm_modeset_unlock_all(dev); 693 return ret; 694 } 695 696 int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 697 struct drm_property *property, 698 uint64_t value) 699 { 700 int ret = -EINVAL; 701 struct drm_crtc *crtc = obj_to_crtc(obj); 702 703 if (crtc->funcs->set_property) 704 ret = crtc->funcs->set_property(crtc, property, value); 705 if (!ret) 706 drm_object_property_set_value(obj, property, value); 707 708 return ret; 709 } 710