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 <linux/uaccess.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 #include <drm/drm_drv.h> 46 #include <drm/drm_print.h> 47 #include <drm/drm_file.h> 48 49 #include "drm_crtc_internal.h" 50 #include "drm_internal.h" 51 52 /** 53 * DOC: overview 54 * 55 * A CRTC represents the overall display pipeline. It receives pixel data from 56 * &drm_plane and blends them together. The &drm_display_mode is also attached 57 * to the CRTC, specifying display timings. On the output side the data is fed 58 * to one or more &drm_encoder, which are then each connected to one 59 * &drm_connector. 60 * 61 * To create a CRTC, a KMS drivers allocates and zeroes an instances of 62 * &struct drm_crtc (possibly as part of a larger structure) and registers it 63 * with a call to drm_crtc_init_with_planes(). 64 * 65 * The CRTC is also the entry point for legacy modeset operations, see 66 * &drm_crtc_funcs.set_config, legacy plane operations, see 67 * &drm_crtc_funcs.page_flip and &drm_crtc_funcs.cursor_set2, and other legacy 68 * operations like &drm_crtc_funcs.gamma_set. For atomic drivers all these 69 * features are controlled through &drm_property and 70 * &drm_mode_config_funcs.atomic_check and &drm_mode_config_funcs.atomic_check. 71 */ 72 73 /** 74 * drm_crtc_from_index - find the registered CRTC at an index 75 * @dev: DRM device 76 * @idx: index of registered CRTC to find for 77 * 78 * Given a CRTC index, return the registered CRTC from DRM device's 79 * list of CRTCs with matching index. This is the inverse of drm_crtc_index(). 80 * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or 81 * &drm_driver.disable_vblank), since that still deals with indices instead 82 * of pointers to &struct drm_crtc." 83 */ 84 struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) 85 { 86 struct drm_crtc *crtc; 87 88 drm_for_each_crtc(crtc, dev) 89 if (idx == crtc->index) 90 return crtc; 91 92 return NULL; 93 } 94 EXPORT_SYMBOL(drm_crtc_from_index); 95 96 int drm_crtc_force_disable(struct drm_crtc *crtc) 97 { 98 struct drm_mode_set set = { 99 .crtc = crtc, 100 }; 101 102 WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); 103 104 return drm_mode_set_config_internal(&set); 105 } 106 107 static unsigned int drm_num_crtcs(struct drm_device *dev) 108 { 109 unsigned int num = 0; 110 struct drm_crtc *tmp; 111 112 drm_for_each_crtc(tmp, dev) { 113 num++; 114 } 115 116 return num; 117 } 118 119 int drm_crtc_register_all(struct drm_device *dev) 120 { 121 struct drm_crtc *crtc; 122 int ret = 0; 123 124 drm_for_each_crtc(crtc, dev) { 125 drm_debugfs_crtc_add(crtc); 126 127 if (crtc->funcs->late_register) 128 ret = crtc->funcs->late_register(crtc); 129 if (ret) 130 return ret; 131 } 132 133 return 0; 134 } 135 136 void drm_crtc_unregister_all(struct drm_device *dev) 137 { 138 struct drm_crtc *crtc; 139 140 drm_for_each_crtc(crtc, dev) { 141 if (crtc->funcs->early_unregister) 142 crtc->funcs->early_unregister(crtc); 143 drm_debugfs_crtc_remove(crtc); 144 } 145 } 146 147 static int drm_crtc_crc_init(struct drm_crtc *crtc) 148 { 149 #ifdef CONFIG_DEBUG_FS 150 spin_lock_init(&crtc->crc.lock); 151 init_waitqueue_head(&crtc->crc.wq); 152 crtc->crc.source = kstrdup("auto", GFP_KERNEL); 153 if (!crtc->crc.source) 154 return -ENOMEM; 155 #endif 156 return 0; 157 } 158 159 static void drm_crtc_crc_fini(struct drm_crtc *crtc) 160 { 161 #ifdef CONFIG_DEBUG_FS 162 kfree(crtc->crc.source); 163 #endif 164 } 165 166 static const struct dma_fence_ops drm_crtc_fence_ops; 167 168 static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) 169 { 170 BUG_ON(fence->ops != &drm_crtc_fence_ops); 171 return container_of(fence->lock, struct drm_crtc, fence_lock); 172 } 173 174 static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) 175 { 176 struct drm_crtc *crtc = fence_to_crtc(fence); 177 178 return crtc->dev->driver->name; 179 } 180 181 static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence) 182 { 183 struct drm_crtc *crtc = fence_to_crtc(fence); 184 185 return crtc->timeline_name; 186 } 187 188 static const struct dma_fence_ops drm_crtc_fence_ops = { 189 .get_driver_name = drm_crtc_fence_get_driver_name, 190 .get_timeline_name = drm_crtc_fence_get_timeline_name, 191 }; 192 193 struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc) 194 { 195 struct dma_fence *fence; 196 197 fence = kzalloc(sizeof(*fence), GFP_KERNEL); 198 if (!fence) 199 return NULL; 200 201 dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock, 202 crtc->fence_context, ++crtc->fence_seqno); 203 204 return fence; 205 } 206 207 /** 208 * drm_crtc_init_with_planes - Initialise a new CRTC object with 209 * specified primary and cursor planes. 210 * @dev: DRM device 211 * @crtc: CRTC object to init 212 * @primary: Primary plane for CRTC 213 * @cursor: Cursor plane for CRTC 214 * @funcs: callbacks for the new CRTC 215 * @name: printf style format string for the CRTC name, or NULL for default name 216 * 217 * Inits a new object created as base part of a driver crtc object. Drivers 218 * should use this function instead of drm_crtc_init(), which is only provided 219 * for backwards compatibility with drivers which do not yet support universal 220 * planes). For really simple hardware which has only 1 plane look at 221 * drm_simple_display_pipe_init() instead. 222 * 223 * Returns: 224 * Zero on success, error code on failure. 225 */ 226 int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, 227 struct drm_plane *primary, 228 struct drm_plane *cursor, 229 const struct drm_crtc_funcs *funcs, 230 const char *name, ...) 231 { 232 struct drm_mode_config *config = &dev->mode_config; 233 int ret; 234 235 WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); 236 WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); 237 238 /* crtc index is used with 32bit bitmasks */ 239 if (WARN_ON(config->num_crtc >= 32)) 240 return -EINVAL; 241 242 WARN_ON(drm_drv_uses_atomic_modeset(dev) && 243 (!funcs->atomic_destroy_state || 244 !funcs->atomic_duplicate_state)); 245 246 crtc->dev = dev; 247 crtc->funcs = funcs; 248 249 INIT_LIST_HEAD(&crtc->commit_list); 250 spin_lock_init(&crtc->commit_lock); 251 252 drm_modeset_lock_init(&crtc->mutex); 253 ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 254 if (ret) 255 return ret; 256 257 if (name) { 258 va_list ap; 259 260 va_start(ap, name); 261 crtc->name = kvasprintf(GFP_KERNEL, name, ap); 262 va_end(ap); 263 } else { 264 crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", 265 drm_num_crtcs(dev)); 266 } 267 if (!crtc->name) { 268 drm_mode_object_unregister(dev, &crtc->base); 269 return -ENOMEM; 270 } 271 272 crtc->fence_context = dma_fence_context_alloc(1); 273 spin_lock_init(&crtc->fence_lock); 274 snprintf(crtc->timeline_name, sizeof(crtc->timeline_name), 275 "CRTC:%d-%s", crtc->base.id, crtc->name); 276 277 crtc->base.properties = &crtc->properties; 278 279 list_add_tail(&crtc->head, &config->crtc_list); 280 crtc->index = config->num_crtc++; 281 282 crtc->primary = primary; 283 crtc->cursor = cursor; 284 if (primary && !primary->possible_crtcs) 285 primary->possible_crtcs = drm_crtc_mask(crtc); 286 if (cursor && !cursor->possible_crtcs) 287 cursor->possible_crtcs = drm_crtc_mask(crtc); 288 289 ret = drm_crtc_crc_init(crtc); 290 if (ret) { 291 drm_mode_object_unregister(dev, &crtc->base); 292 return ret; 293 } 294 295 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { 296 drm_object_attach_property(&crtc->base, config->prop_active, 0); 297 drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); 298 drm_object_attach_property(&crtc->base, 299 config->prop_out_fence_ptr, 0); 300 drm_object_attach_property(&crtc->base, 301 config->prop_vrr_enabled, 0); 302 } 303 304 return 0; 305 } 306 EXPORT_SYMBOL(drm_crtc_init_with_planes); 307 308 /** 309 * drm_crtc_cleanup - Clean up the core crtc usage 310 * @crtc: CRTC to cleanup 311 * 312 * This function cleans up @crtc and removes it from the DRM mode setting 313 * core. Note that the function does *not* free the crtc structure itself, 314 * this is the responsibility of the caller. 315 */ 316 void drm_crtc_cleanup(struct drm_crtc *crtc) 317 { 318 struct drm_device *dev = crtc->dev; 319 320 /* Note that the crtc_list is considered to be static; should we 321 * remove the drm_crtc at runtime we would have to decrement all 322 * the indices on the drm_crtc after us in the crtc_list. 323 */ 324 325 drm_crtc_crc_fini(crtc); 326 327 kfree(crtc->gamma_store); 328 crtc->gamma_store = NULL; 329 330 drm_modeset_lock_fini(&crtc->mutex); 331 332 drm_mode_object_unregister(dev, &crtc->base); 333 list_del(&crtc->head); 334 dev->mode_config.num_crtc--; 335 336 WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); 337 if (crtc->state && crtc->funcs->atomic_destroy_state) 338 crtc->funcs->atomic_destroy_state(crtc, crtc->state); 339 340 kfree(crtc->name); 341 342 memset(crtc, 0, sizeof(*crtc)); 343 } 344 EXPORT_SYMBOL(drm_crtc_cleanup); 345 346 /** 347 * drm_mode_getcrtc - get CRTC configuration 348 * @dev: drm device for the ioctl 349 * @data: data pointer for the ioctl 350 * @file_priv: drm file for the ioctl call 351 * 352 * Construct a CRTC configuration structure to return to the user. 353 * 354 * Called by the user via ioctl. 355 * 356 * Returns: 357 * Zero on success, negative errno on failure. 358 */ 359 int drm_mode_getcrtc(struct drm_device *dev, 360 void *data, struct drm_file *file_priv) 361 { 362 struct drm_mode_crtc *crtc_resp = data; 363 struct drm_crtc *crtc; 364 struct drm_plane *plane; 365 366 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 367 return -EOPNOTSUPP; 368 369 crtc = drm_crtc_find(dev, file_priv, crtc_resp->crtc_id); 370 if (!crtc) 371 return -ENOENT; 372 373 plane = crtc->primary; 374 375 crtc_resp->gamma_size = crtc->gamma_size; 376 377 drm_modeset_lock(&plane->mutex, NULL); 378 if (plane->state && plane->state->fb) 379 crtc_resp->fb_id = plane->state->fb->base.id; 380 else if (!plane->state && plane->fb) 381 crtc_resp->fb_id = plane->fb->base.id; 382 else 383 crtc_resp->fb_id = 0; 384 385 if (plane->state) { 386 crtc_resp->x = plane->state->src_x >> 16; 387 crtc_resp->y = plane->state->src_y >> 16; 388 } 389 drm_modeset_unlock(&plane->mutex); 390 391 drm_modeset_lock(&crtc->mutex, NULL); 392 if (crtc->state) { 393 if (crtc->state->enable) { 394 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); 395 crtc_resp->mode_valid = 1; 396 } else { 397 crtc_resp->mode_valid = 0; 398 } 399 } else { 400 crtc_resp->x = crtc->x; 401 crtc_resp->y = crtc->y; 402 403 if (crtc->enabled) { 404 drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); 405 crtc_resp->mode_valid = 1; 406 407 } else { 408 crtc_resp->mode_valid = 0; 409 } 410 } 411 if (!file_priv->aspect_ratio_allowed) 412 crtc_resp->mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; 413 drm_modeset_unlock(&crtc->mutex); 414 415 return 0; 416 } 417 418 static int __drm_mode_set_config_internal(struct drm_mode_set *set, 419 struct drm_modeset_acquire_ctx *ctx) 420 { 421 struct drm_crtc *crtc = set->crtc; 422 struct drm_framebuffer *fb; 423 struct drm_crtc *tmp; 424 int ret; 425 426 WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); 427 428 /* 429 * NOTE: ->set_config can also disable other crtcs (if we steal all 430 * connectors from it), hence we need to refcount the fbs across all 431 * crtcs. Atomic modeset will have saner semantics ... 432 */ 433 drm_for_each_crtc(tmp, crtc->dev) { 434 struct drm_plane *plane = tmp->primary; 435 436 plane->old_fb = plane->fb; 437 } 438 439 fb = set->fb; 440 441 ret = crtc->funcs->set_config(set, ctx); 442 if (ret == 0) { 443 struct drm_plane *plane = crtc->primary; 444 445 plane->crtc = fb ? crtc : NULL; 446 plane->fb = fb; 447 } 448 449 drm_for_each_crtc(tmp, crtc->dev) { 450 struct drm_plane *plane = tmp->primary; 451 452 if (plane->fb) 453 drm_framebuffer_get(plane->fb); 454 if (plane->old_fb) 455 drm_framebuffer_put(plane->old_fb); 456 plane->old_fb = NULL; 457 } 458 459 return ret; 460 } 461 462 /** 463 * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config 464 * @set: modeset config to set 465 * 466 * This is a little helper to wrap internal calls to the 467 * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is 468 * correct refcounting dance. 469 * 470 * This should only be used by non-atomic legacy drivers. 471 * 472 * Returns: 473 * Zero on success, negative errno on failure. 474 */ 475 int drm_mode_set_config_internal(struct drm_mode_set *set) 476 { 477 WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev)); 478 479 return __drm_mode_set_config_internal(set, NULL); 480 } 481 EXPORT_SYMBOL(drm_mode_set_config_internal); 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_mode_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_plane *plane; 532 struct drm_connector **connector_set = NULL, *connector; 533 struct drm_framebuffer *fb = NULL; 534 struct drm_display_mode *mode = NULL; 535 struct drm_mode_set set; 536 uint32_t __user *set_connectors_ptr; 537 struct drm_modeset_acquire_ctx ctx; 538 int ret; 539 int i; 540 541 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 542 return -EOPNOTSUPP; 543 544 /* 545 * Universal plane src offsets are only 16.16, prevent havoc for 546 * drivers using universal plane code internally. 547 */ 548 if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) 549 return -ERANGE; 550 551 crtc = drm_crtc_find(dev, file_priv, crtc_req->crtc_id); 552 if (!crtc) { 553 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 554 return -ENOENT; 555 } 556 DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); 557 558 plane = crtc->primary; 559 560 /* allow disabling with the primary plane leased */ 561 if (crtc_req->mode_valid && !drm_lease_held(file_priv, plane->base.id)) 562 return -EACCES; 563 564 mutex_lock(&crtc->dev->mode_config.mutex); 565 DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 566 DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret); 567 568 if (crtc_req->mode_valid) { 569 /* If we have a mode we need a framebuffer. */ 570 /* If we pass -1, set the mode with the currently bound fb */ 571 if (crtc_req->fb_id == -1) { 572 struct drm_framebuffer *old_fb; 573 574 if (plane->state) 575 old_fb = plane->state->fb; 576 else 577 old_fb = plane->fb; 578 579 if (!old_fb) { 580 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 581 ret = -EINVAL; 582 goto out; 583 } 584 585 fb = old_fb; 586 /* Make refcounting symmetric with the lookup path. */ 587 drm_framebuffer_get(fb); 588 } else { 589 fb = drm_framebuffer_lookup(dev, file_priv, crtc_req->fb_id); 590 if (!fb) { 591 DRM_DEBUG_KMS("Unknown FB ID%d\n", 592 crtc_req->fb_id); 593 ret = -ENOENT; 594 goto out; 595 } 596 } 597 598 mode = drm_mode_create(dev); 599 if (!mode) { 600 ret = -ENOMEM; 601 goto out; 602 } 603 if (!file_priv->aspect_ratio_allowed && 604 (crtc_req->mode.flags & DRM_MODE_FLAG_PIC_AR_MASK) != DRM_MODE_FLAG_PIC_AR_NONE) { 605 DRM_DEBUG_KMS("Unexpected aspect-ratio flag bits\n"); 606 ret = -EINVAL; 607 goto out; 608 } 609 610 611 ret = drm_mode_convert_umode(dev, mode, &crtc_req->mode); 612 if (ret) { 613 DRM_DEBUG_KMS("Invalid mode (ret=%d, status=%s)\n", 614 ret, drm_get_mode_status_name(mode->status)); 615 drm_mode_debug_printmodeline(mode); 616 goto out; 617 } 618 619 /* 620 * Check whether the primary plane supports the fb pixel format. 621 * Drivers not implementing the universal planes API use a 622 * default formats list provided by the DRM core which doesn't 623 * match real hardware capabilities. Skip the check in that 624 * case. 625 */ 626 if (!plane->format_default) { 627 ret = drm_plane_check_pixel_format(plane, 628 fb->format->format, 629 fb->modifier); 630 if (ret) { 631 struct drm_format_name_buf format_name; 632 DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n", 633 drm_get_format_name(fb->format->format, 634 &format_name), 635 fb->modifier); 636 goto out; 637 } 638 } 639 640 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, 641 mode, fb); 642 if (ret) 643 goto out; 644 645 } 646 647 if (crtc_req->count_connectors == 0 && mode) { 648 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 649 ret = -EINVAL; 650 goto out; 651 } 652 653 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 654 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 655 crtc_req->count_connectors); 656 ret = -EINVAL; 657 goto out; 658 } 659 660 if (crtc_req->count_connectors > 0) { 661 u32 out_id; 662 663 /* Avoid unbounded kernel memory allocation */ 664 if (crtc_req->count_connectors > config->num_connector) { 665 ret = -EINVAL; 666 goto out; 667 } 668 669 connector_set = kmalloc_array(crtc_req->count_connectors, 670 sizeof(struct drm_connector *), 671 GFP_KERNEL); 672 if (!connector_set) { 673 ret = -ENOMEM; 674 goto out; 675 } 676 677 for (i = 0; i < crtc_req->count_connectors; i++) { 678 connector_set[i] = NULL; 679 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 680 if (get_user(out_id, &set_connectors_ptr[i])) { 681 ret = -EFAULT; 682 goto out; 683 } 684 685 connector = drm_connector_lookup(dev, file_priv, out_id); 686 if (!connector) { 687 DRM_DEBUG_KMS("Connector id %d unknown\n", 688 out_id); 689 ret = -ENOENT; 690 goto out; 691 } 692 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 693 connector->base.id, 694 connector->name); 695 696 connector_set[i] = connector; 697 } 698 } 699 700 set.crtc = crtc; 701 set.x = crtc_req->x; 702 set.y = crtc_req->y; 703 set.mode = mode; 704 set.connectors = connector_set; 705 set.num_connectors = crtc_req->count_connectors; 706 set.fb = fb; 707 708 if (drm_drv_uses_atomic_modeset(dev)) 709 ret = crtc->funcs->set_config(&set, &ctx); 710 else 711 ret = __drm_mode_set_config_internal(&set, &ctx); 712 713 out: 714 if (fb) 715 drm_framebuffer_put(fb); 716 717 if (connector_set) { 718 for (i = 0; i < crtc_req->count_connectors; i++) { 719 if (connector_set[i]) 720 drm_connector_put(connector_set[i]); 721 } 722 } 723 kfree(connector_set); 724 drm_mode_destroy(dev, mode); 725 726 /* In case we need to retry... */ 727 connector_set = NULL; 728 fb = NULL; 729 mode = NULL; 730 731 DRM_MODESET_LOCK_ALL_END(ctx, ret); 732 mutex_unlock(&crtc->dev->mode_config.mutex); 733 734 return ret; 735 } 736 737 int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 738 struct drm_property *property, 739 uint64_t value) 740 { 741 int ret = -EINVAL; 742 struct drm_crtc *crtc = obj_to_crtc(obj); 743 744 if (crtc->funcs->set_property) 745 ret = crtc->funcs->set_property(crtc, property, value); 746 if (!ret) 747 drm_object_property_set_value(obj, property, value); 748 749 return ret; 750 } 751