drm_crtc.c revision ed8d19756e80ec63003a93aa4d70406e6ba61522
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 <drm/drmP.h> 37#include <drm/drm_crtc.h> 38#include <drm/drm_edid.h> 39#include <drm/drm_fourcc.h> 40 41/** 42 * drm_modeset_lock_all - take all modeset locks 43 * @dev: drm device 44 * 45 * This function takes all modeset locks, suitable where a more fine-grained 46 * scheme isn't (yet) implemented. 47 */ 48void drm_modeset_lock_all(struct drm_device *dev) 49{ 50 struct drm_crtc *crtc; 51 52 mutex_lock(&dev->mode_config.mutex); 53 54 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 55 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); 56} 57EXPORT_SYMBOL(drm_modeset_lock_all); 58 59/** 60 * drm_modeset_unlock_all - drop all modeset locks 61 * @dev: device 62 */ 63void drm_modeset_unlock_all(struct drm_device *dev) 64{ 65 struct drm_crtc *crtc; 66 67 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 68 mutex_unlock(&crtc->mutex); 69 70 mutex_unlock(&dev->mode_config.mutex); 71} 72EXPORT_SYMBOL(drm_modeset_unlock_all); 73 74/** 75 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked 76 * @dev: device 77 */ 78void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) 79{ 80 struct drm_crtc *crtc; 81 82 /* Locking is currently fubar in the panic handler. */ 83 if (oops_in_progress) 84 return; 85 86 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 87 WARN_ON(!mutex_is_locked(&crtc->mutex)); 88 89 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); 90} 91EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); 92 93/* Avoid boilerplate. I'm tired of typing. */ 94#define DRM_ENUM_NAME_FN(fnname, list) \ 95 const char *fnname(int val) \ 96 { \ 97 int i; \ 98 for (i = 0; i < ARRAY_SIZE(list); i++) { \ 99 if (list[i].type == val) \ 100 return list[i].name; \ 101 } \ 102 return "(unknown)"; \ 103 } 104 105/* 106 * Global properties 107 */ 108static const struct drm_prop_enum_list drm_dpms_enum_list[] = 109{ { DRM_MODE_DPMS_ON, "On" }, 110 { DRM_MODE_DPMS_STANDBY, "Standby" }, 111 { DRM_MODE_DPMS_SUSPEND, "Suspend" }, 112 { DRM_MODE_DPMS_OFF, "Off" } 113}; 114 115DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) 116 117/* 118 * Optional properties 119 */ 120static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = 121{ 122 { DRM_MODE_SCALE_NONE, "None" }, 123 { DRM_MODE_SCALE_FULLSCREEN, "Full" }, 124 { DRM_MODE_SCALE_CENTER, "Center" }, 125 { DRM_MODE_SCALE_ASPECT, "Full aspect" }, 126}; 127 128/* 129 * Non-global properties, but "required" for certain connectors. 130 */ 131static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = 132{ 133 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 134 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 135 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 136}; 137 138DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) 139 140static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = 141{ 142 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 143 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 144 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 145}; 146 147DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, 148 drm_dvi_i_subconnector_enum_list) 149 150static const struct drm_prop_enum_list drm_tv_select_enum_list[] = 151{ 152 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 153 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 154 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 155 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 156 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 157}; 158 159DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 160 161static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = 162{ 163 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 164 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 165 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 166 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 167 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 168}; 169 170DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 171 drm_tv_subconnector_enum_list) 172 173static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = { 174 { DRM_MODE_DIRTY_OFF, "Off" }, 175 { DRM_MODE_DIRTY_ON, "On" }, 176 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, 177}; 178 179struct drm_conn_prop_enum_list { 180 int type; 181 const char *name; 182 struct ida ida; 183}; 184 185/* 186 * Connector and encoder types. 187 */ 188static struct drm_conn_prop_enum_list drm_connector_enum_list[] = 189{ { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, 190 { DRM_MODE_CONNECTOR_VGA, "VGA" }, 191 { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, 192 { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, 193 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, 194 { DRM_MODE_CONNECTOR_Composite, "Composite" }, 195 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, 196 { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, 197 { DRM_MODE_CONNECTOR_Component, "Component" }, 198 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, 199 { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, 200 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, 201 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, 202 { DRM_MODE_CONNECTOR_TV, "TV" }, 203 { DRM_MODE_CONNECTOR_eDP, "eDP" }, 204 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, 205}; 206 207static const struct drm_prop_enum_list drm_encoder_enum_list[] = 208{ { DRM_MODE_ENCODER_NONE, "None" }, 209 { DRM_MODE_ENCODER_DAC, "DAC" }, 210 { DRM_MODE_ENCODER_TMDS, "TMDS" }, 211 { DRM_MODE_ENCODER_LVDS, "LVDS" }, 212 { DRM_MODE_ENCODER_TVDAC, "TV" }, 213 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, 214}; 215 216void drm_connector_ida_init(void) 217{ 218 int i; 219 220 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) 221 ida_init(&drm_connector_enum_list[i].ida); 222} 223 224void drm_connector_ida_destroy(void) 225{ 226 int i; 227 228 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) 229 ida_destroy(&drm_connector_enum_list[i].ida); 230} 231 232const char *drm_get_encoder_name(const struct drm_encoder *encoder) 233{ 234 static char buf[32]; 235 236 snprintf(buf, 32, "%s-%d", 237 drm_encoder_enum_list[encoder->encoder_type].name, 238 encoder->base.id); 239 return buf; 240} 241EXPORT_SYMBOL(drm_get_encoder_name); 242 243const char *drm_get_connector_name(const struct drm_connector *connector) 244{ 245 static char buf[32]; 246 247 snprintf(buf, 32, "%s-%d", 248 drm_connector_enum_list[connector->connector_type].name, 249 connector->connector_type_id); 250 return buf; 251} 252EXPORT_SYMBOL(drm_get_connector_name); 253 254const char *drm_get_connector_status_name(enum drm_connector_status status) 255{ 256 if (status == connector_status_connected) 257 return "connected"; 258 else if (status == connector_status_disconnected) 259 return "disconnected"; 260 else 261 return "unknown"; 262} 263EXPORT_SYMBOL(drm_get_connector_status_name); 264 265static char printable_char(int c) 266{ 267 return isascii(c) && isprint(c) ? c : '?'; 268} 269 270const char *drm_get_format_name(uint32_t format) 271{ 272 static char buf[32]; 273 274 snprintf(buf, sizeof(buf), 275 "%c%c%c%c %s-endian (0x%08x)", 276 printable_char(format & 0xff), 277 printable_char((format >> 8) & 0xff), 278 printable_char((format >> 16) & 0xff), 279 printable_char((format >> 24) & 0x7f), 280 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little", 281 format); 282 283 return buf; 284} 285EXPORT_SYMBOL(drm_get_format_name); 286 287/** 288 * drm_mode_object_get - allocate a new modeset identifier 289 * @dev: DRM device 290 * @obj: object pointer, used to generate unique ID 291 * @obj_type: object type 292 * 293 * Create a unique identifier based on @ptr in @dev's identifier space. Used 294 * for tracking modes, CRTCs and connectors. 295 * 296 * RETURNS: 297 * New unique (relative to other objects in @dev) integer identifier for the 298 * object. 299 */ 300static int drm_mode_object_get(struct drm_device *dev, 301 struct drm_mode_object *obj, uint32_t obj_type) 302{ 303 int ret; 304 305 mutex_lock(&dev->mode_config.idr_mutex); 306 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL); 307 if (ret >= 0) { 308 /* 309 * Set up the object linking under the protection of the idr 310 * lock so that other users can't see inconsistent state. 311 */ 312 obj->id = ret; 313 obj->type = obj_type; 314 } 315 mutex_unlock(&dev->mode_config.idr_mutex); 316 317 return ret < 0 ? ret : 0; 318} 319 320/** 321 * drm_mode_object_put - free a modeset identifer 322 * @dev: DRM device 323 * @object: object to free 324 * 325 * Free @id from @dev's unique identifier pool. 326 */ 327static void drm_mode_object_put(struct drm_device *dev, 328 struct drm_mode_object *object) 329{ 330 mutex_lock(&dev->mode_config.idr_mutex); 331 idr_remove(&dev->mode_config.crtc_idr, object->id); 332 mutex_unlock(&dev->mode_config.idr_mutex); 333} 334 335/** 336 * drm_mode_object_find - look up a drm object with static lifetime 337 * @dev: drm device 338 * @id: id of the mode object 339 * @type: type of the mode object 340 * 341 * Note that framebuffers cannot be looked up with this functions - since those 342 * are reference counted, they need special treatment. 343 */ 344struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 345 uint32_t id, uint32_t type) 346{ 347 struct drm_mode_object *obj = NULL; 348 349 /* Framebuffers are reference counted and need their own lookup 350 * function.*/ 351 WARN_ON(type == DRM_MODE_OBJECT_FB); 352 353 mutex_lock(&dev->mode_config.idr_mutex); 354 obj = idr_find(&dev->mode_config.crtc_idr, id); 355 if (!obj || (obj->type != type) || (obj->id != id)) 356 obj = NULL; 357 mutex_unlock(&dev->mode_config.idr_mutex); 358 359 return obj; 360} 361EXPORT_SYMBOL(drm_mode_object_find); 362 363/** 364 * drm_framebuffer_init - initialize a framebuffer 365 * @dev: DRM device 366 * @fb: framebuffer to be initialized 367 * @funcs: ... with these functions 368 * 369 * Allocates an ID for the framebuffer's parent mode object, sets its mode 370 * functions & device file and adds it to the master fd list. 371 * 372 * IMPORTANT: 373 * This functions publishes the fb and makes it available for concurrent access 374 * by other users. Which means by this point the fb _must_ be fully set up - 375 * since all the fb attributes are invariant over its lifetime, no further 376 * locking but only correct reference counting is required. 377 * 378 * RETURNS: 379 * Zero on success, error code on failure. 380 */ 381int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, 382 const struct drm_framebuffer_funcs *funcs) 383{ 384 int ret; 385 386 mutex_lock(&dev->mode_config.fb_lock); 387 kref_init(&fb->refcount); 388 INIT_LIST_HEAD(&fb->filp_head); 389 fb->dev = dev; 390 fb->funcs = funcs; 391 392 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); 393 if (ret) 394 goto out; 395 396 /* Grab the idr reference. */ 397 drm_framebuffer_reference(fb); 398 399 dev->mode_config.num_fb++; 400 list_add(&fb->head, &dev->mode_config.fb_list); 401out: 402 mutex_unlock(&dev->mode_config.fb_lock); 403 404 return 0; 405} 406EXPORT_SYMBOL(drm_framebuffer_init); 407 408static void drm_framebuffer_free(struct kref *kref) 409{ 410 struct drm_framebuffer *fb = 411 container_of(kref, struct drm_framebuffer, refcount); 412 fb->funcs->destroy(fb); 413} 414 415static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev, 416 uint32_t id) 417{ 418 struct drm_mode_object *obj = NULL; 419 struct drm_framebuffer *fb; 420 421 mutex_lock(&dev->mode_config.idr_mutex); 422 obj = idr_find(&dev->mode_config.crtc_idr, id); 423 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id)) 424 fb = NULL; 425 else 426 fb = obj_to_fb(obj); 427 mutex_unlock(&dev->mode_config.idr_mutex); 428 429 return fb; 430} 431 432/** 433 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference 434 * @dev: drm device 435 * @id: id of the fb object 436 * 437 * If successful, this grabs an additional reference to the framebuffer - 438 * callers need to make sure to eventually unreference the returned framebuffer 439 * again. 440 */ 441struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, 442 uint32_t id) 443{ 444 struct drm_framebuffer *fb; 445 446 mutex_lock(&dev->mode_config.fb_lock); 447 fb = __drm_framebuffer_lookup(dev, id); 448 if (fb) 449 drm_framebuffer_reference(fb); 450 mutex_unlock(&dev->mode_config.fb_lock); 451 452 return fb; 453} 454EXPORT_SYMBOL(drm_framebuffer_lookup); 455 456/** 457 * drm_framebuffer_unreference - unref a framebuffer 458 * @fb: framebuffer to unref 459 * 460 * This functions decrements the fb's refcount and frees it if it drops to zero. 461 */ 462void drm_framebuffer_unreference(struct drm_framebuffer *fb) 463{ 464 DRM_DEBUG("FB ID: %d\n", fb->base.id); 465 kref_put(&fb->refcount, drm_framebuffer_free); 466} 467EXPORT_SYMBOL(drm_framebuffer_unreference); 468 469/** 470 * drm_framebuffer_reference - incr the fb refcnt 471 * @fb: framebuffer 472 */ 473void drm_framebuffer_reference(struct drm_framebuffer *fb) 474{ 475 DRM_DEBUG("FB ID: %d\n", fb->base.id); 476 kref_get(&fb->refcount); 477} 478EXPORT_SYMBOL(drm_framebuffer_reference); 479 480static void drm_framebuffer_free_bug(struct kref *kref) 481{ 482 BUG(); 483} 484 485static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) 486{ 487 DRM_DEBUG("FB ID: %d\n", fb->base.id); 488 kref_put(&fb->refcount, drm_framebuffer_free_bug); 489} 490 491/* dev->mode_config.fb_lock must be held! */ 492static void __drm_framebuffer_unregister(struct drm_device *dev, 493 struct drm_framebuffer *fb) 494{ 495 mutex_lock(&dev->mode_config.idr_mutex); 496 idr_remove(&dev->mode_config.crtc_idr, fb->base.id); 497 mutex_unlock(&dev->mode_config.idr_mutex); 498 499 fb->base.id = 0; 500 501 __drm_framebuffer_unreference(fb); 502} 503 504/** 505 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr 506 * @fb: fb to unregister 507 * 508 * Drivers need to call this when cleaning up driver-private framebuffers, e.g. 509 * those used for fbdev. Note that the caller must hold a reference of it's own, 510 * i.e. the object may not be destroyed through this call (since it'll lead to a 511 * locking inversion). 512 */ 513void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) 514{ 515 struct drm_device *dev = fb->dev; 516 517 mutex_lock(&dev->mode_config.fb_lock); 518 /* Mark fb as reaped and drop idr ref. */ 519 __drm_framebuffer_unregister(dev, fb); 520 mutex_unlock(&dev->mode_config.fb_lock); 521} 522EXPORT_SYMBOL(drm_framebuffer_unregister_private); 523 524/** 525 * drm_framebuffer_cleanup - remove a framebuffer object 526 * @fb: framebuffer to remove 527 * 528 * Cleanup references to a user-created framebuffer. This function is intended 529 * to be used from the drivers ->destroy callback. 530 * 531 * Note that this function does not remove the fb from active usuage - if it is 532 * still used anywhere, hilarity can ensue since userspace could call getfb on 533 * the id and get back -EINVAL. Obviously no concern at driver unload time. 534 * 535 * Also, the framebuffer will not be removed from the lookup idr - for 536 * user-created framebuffers this will happen in in the rmfb ioctl. For 537 * driver-private objects (e.g. for fbdev) drivers need to explicitly call 538 * drm_framebuffer_unregister_private. 539 */ 540void drm_framebuffer_cleanup(struct drm_framebuffer *fb) 541{ 542 struct drm_device *dev = fb->dev; 543 544 mutex_lock(&dev->mode_config.fb_lock); 545 list_del(&fb->head); 546 dev->mode_config.num_fb--; 547 mutex_unlock(&dev->mode_config.fb_lock); 548} 549EXPORT_SYMBOL(drm_framebuffer_cleanup); 550 551/** 552 * drm_framebuffer_remove - remove and unreference a framebuffer object 553 * @fb: framebuffer to remove 554 * 555 * Scans all the CRTCs and planes in @dev's mode_config. If they're 556 * using @fb, removes it, setting it to NULL. Then drops the reference to the 557 * passed-in framebuffer. Might take the modeset locks. 558 * 559 * Note that this function optimizes the cleanup away if the caller holds the 560 * last reference to the framebuffer. It is also guaranteed to not take the 561 * modeset locks in this case. 562 */ 563void drm_framebuffer_remove(struct drm_framebuffer *fb) 564{ 565 struct drm_device *dev = fb->dev; 566 struct drm_crtc *crtc; 567 struct drm_plane *plane; 568 struct drm_mode_set set; 569 int ret; 570 571 WARN_ON(!list_empty(&fb->filp_head)); 572 573 /* 574 * drm ABI mandates that we remove any deleted framebuffers from active 575 * useage. But since most sane clients only remove framebuffers they no 576 * longer need, try to optimize this away. 577 * 578 * Since we're holding a reference ourselves, observing a refcount of 1 579 * means that we're the last holder and can skip it. Also, the refcount 580 * can never increase from 1 again, so we don't need any barriers or 581 * locks. 582 * 583 * Note that userspace could try to race with use and instate a new 584 * usage _after_ we've cleared all current ones. End result will be an 585 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot 586 * in this manner. 587 */ 588 if (atomic_read(&fb->refcount.refcount) > 1) { 589 drm_modeset_lock_all(dev); 590 /* remove from any CRTC */ 591 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 592 if (crtc->fb == fb) { 593 /* should turn off the crtc */ 594 memset(&set, 0, sizeof(struct drm_mode_set)); 595 set.crtc = crtc; 596 set.fb = NULL; 597 ret = drm_mode_set_config_internal(&set); 598 if (ret) 599 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); 600 } 601 } 602 603 list_for_each_entry(plane, &dev->mode_config.plane_list, head) { 604 if (plane->fb == fb) 605 drm_plane_force_disable(plane); 606 } 607 drm_modeset_unlock_all(dev); 608 } 609 610 drm_framebuffer_unreference(fb); 611} 612EXPORT_SYMBOL(drm_framebuffer_remove); 613 614/** 615 * drm_crtc_init - Initialise a new CRTC object 616 * @dev: DRM device 617 * @crtc: CRTC object to init 618 * @funcs: callbacks for the new CRTC 619 * 620 * Inits a new object created as base part of a driver crtc object. 621 * 622 * RETURNS: 623 * Zero on success, error code on failure. 624 */ 625int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 626 const struct drm_crtc_funcs *funcs) 627{ 628 int ret; 629 630 crtc->dev = dev; 631 crtc->funcs = funcs; 632 crtc->invert_dimensions = false; 633 634 drm_modeset_lock_all(dev); 635 mutex_init(&crtc->mutex); 636 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); 637 638 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 639 if (ret) 640 goto out; 641 642 crtc->base.properties = &crtc->properties; 643 644 list_add_tail(&crtc->head, &dev->mode_config.crtc_list); 645 dev->mode_config.num_crtc++; 646 647 out: 648 drm_modeset_unlock_all(dev); 649 650 return ret; 651} 652EXPORT_SYMBOL(drm_crtc_init); 653 654/** 655 * drm_crtc_cleanup - Clean up the core crtc usage 656 * @crtc: CRTC to cleanup 657 * 658 * This function cleans up @crtc and removes it from the DRM mode setting 659 * core. Note that the function does *not* free the crtc structure itself, 660 * this is the responsibility of the caller. 661 */ 662void drm_crtc_cleanup(struct drm_crtc *crtc) 663{ 664 struct drm_device *dev = crtc->dev; 665 666 kfree(crtc->gamma_store); 667 crtc->gamma_store = NULL; 668 669 drm_mode_object_put(dev, &crtc->base); 670 list_del(&crtc->head); 671 dev->mode_config.num_crtc--; 672} 673EXPORT_SYMBOL(drm_crtc_cleanup); 674 675/** 676 * drm_mode_probed_add - add a mode to a connector's probed mode list 677 * @connector: connector the new mode 678 * @mode: mode data 679 * 680 * Add @mode to @connector's mode list for later use. 681 */ 682void drm_mode_probed_add(struct drm_connector *connector, 683 struct drm_display_mode *mode) 684{ 685 list_add_tail(&mode->head, &connector->probed_modes); 686} 687EXPORT_SYMBOL(drm_mode_probed_add); 688 689/* 690 * drm_mode_remove - remove and free a mode 691 * @connector: connector list to modify 692 * @mode: mode to remove 693 * 694 * Remove @mode from @connector's mode list, then free it. 695 */ 696static void drm_mode_remove(struct drm_connector *connector, 697 struct drm_display_mode *mode) 698{ 699 list_del(&mode->head); 700 drm_mode_destroy(connector->dev, mode); 701} 702 703/** 704 * drm_connector_init - Init a preallocated connector 705 * @dev: DRM device 706 * @connector: the connector to init 707 * @funcs: callbacks for this connector 708 * @connector_type: user visible type of the connector 709 * 710 * Initialises a preallocated connector. Connectors should be 711 * subclassed as part of driver connector objects. 712 * 713 * RETURNS: 714 * Zero on success, error code on failure. 715 */ 716int drm_connector_init(struct drm_device *dev, 717 struct drm_connector *connector, 718 const struct drm_connector_funcs *funcs, 719 int connector_type) 720{ 721 int ret; 722 struct ida *connector_ida = 723 &drm_connector_enum_list[connector_type].ida; 724 725 drm_modeset_lock_all(dev); 726 727 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); 728 if (ret) 729 goto out; 730 731 connector->base.properties = &connector->properties; 732 connector->dev = dev; 733 connector->funcs = funcs; 734 connector->connector_type = connector_type; 735 connector->connector_type_id = 736 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); 737 if (connector->connector_type_id < 0) { 738 ret = connector->connector_type_id; 739 drm_mode_object_put(dev, &connector->base); 740 goto out; 741 } 742 INIT_LIST_HEAD(&connector->probed_modes); 743 INIT_LIST_HEAD(&connector->modes); 744 connector->edid_blob_ptr = NULL; 745 connector->status = connector_status_unknown; 746 747 list_add_tail(&connector->head, &dev->mode_config.connector_list); 748 dev->mode_config.num_connector++; 749 750 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) 751 drm_object_attach_property(&connector->base, 752 dev->mode_config.edid_property, 753 0); 754 755 drm_object_attach_property(&connector->base, 756 dev->mode_config.dpms_property, 0); 757 758 out: 759 drm_modeset_unlock_all(dev); 760 761 return ret; 762} 763EXPORT_SYMBOL(drm_connector_init); 764 765/** 766 * drm_connector_cleanup - cleans up an initialised connector 767 * @connector: connector to cleanup 768 * 769 * Cleans up the connector but doesn't free the object. 770 */ 771void drm_connector_cleanup(struct drm_connector *connector) 772{ 773 struct drm_device *dev = connector->dev; 774 struct drm_display_mode *mode, *t; 775 776 list_for_each_entry_safe(mode, t, &connector->probed_modes, head) 777 drm_mode_remove(connector, mode); 778 779 list_for_each_entry_safe(mode, t, &connector->modes, head) 780 drm_mode_remove(connector, mode); 781 782 ida_remove(&drm_connector_enum_list[connector->connector_type].ida, 783 connector->connector_type_id); 784 785 drm_mode_object_put(dev, &connector->base); 786 list_del(&connector->head); 787 dev->mode_config.num_connector--; 788} 789EXPORT_SYMBOL(drm_connector_cleanup); 790 791void drm_connector_unplug_all(struct drm_device *dev) 792{ 793 struct drm_connector *connector; 794 795 /* taking the mode config mutex ends up in a clash with sysfs */ 796 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 797 drm_sysfs_connector_remove(connector); 798 799} 800EXPORT_SYMBOL(drm_connector_unplug_all); 801 802int drm_encoder_init(struct drm_device *dev, 803 struct drm_encoder *encoder, 804 const struct drm_encoder_funcs *funcs, 805 int encoder_type) 806{ 807 int ret; 808 809 drm_modeset_lock_all(dev); 810 811 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); 812 if (ret) 813 goto out; 814 815 encoder->dev = dev; 816 encoder->encoder_type = encoder_type; 817 encoder->funcs = funcs; 818 819 list_add_tail(&encoder->head, &dev->mode_config.encoder_list); 820 dev->mode_config.num_encoder++; 821 822 out: 823 drm_modeset_unlock_all(dev); 824 825 return ret; 826} 827EXPORT_SYMBOL(drm_encoder_init); 828 829void drm_encoder_cleanup(struct drm_encoder *encoder) 830{ 831 struct drm_device *dev = encoder->dev; 832 drm_modeset_lock_all(dev); 833 drm_mode_object_put(dev, &encoder->base); 834 list_del(&encoder->head); 835 dev->mode_config.num_encoder--; 836 drm_modeset_unlock_all(dev); 837} 838EXPORT_SYMBOL(drm_encoder_cleanup); 839 840/** 841 * drm_plane_init - Initialise a new plane object 842 * @dev: DRM device 843 * @plane: plane object to init 844 * @possible_crtcs: bitmask of possible CRTCs 845 * @funcs: callbacks for the new plane 846 * @formats: array of supported formats (%DRM_FORMAT_*) 847 * @format_count: number of elements in @formats 848 * @priv: plane is private (hidden from userspace)? 849 * 850 * Inits a new object created as base part of a driver plane object. 851 * 852 * RETURNS: 853 * Zero on success, error code on failure. 854 */ 855int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, 856 unsigned long possible_crtcs, 857 const struct drm_plane_funcs *funcs, 858 const uint32_t *formats, uint32_t format_count, 859 bool priv) 860{ 861 int ret; 862 863 drm_modeset_lock_all(dev); 864 865 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); 866 if (ret) 867 goto out; 868 869 plane->base.properties = &plane->properties; 870 plane->dev = dev; 871 plane->funcs = funcs; 872 plane->format_types = kmalloc(sizeof(uint32_t) * format_count, 873 GFP_KERNEL); 874 if (!plane->format_types) { 875 DRM_DEBUG_KMS("out of memory when allocating plane\n"); 876 drm_mode_object_put(dev, &plane->base); 877 ret = -ENOMEM; 878 goto out; 879 } 880 881 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); 882 plane->format_count = format_count; 883 plane->possible_crtcs = possible_crtcs; 884 885 /* private planes are not exposed to userspace, but depending on 886 * display hardware, might be convenient to allow sharing programming 887 * for the scanout engine with the crtc implementation. 888 */ 889 if (!priv) { 890 list_add_tail(&plane->head, &dev->mode_config.plane_list); 891 dev->mode_config.num_plane++; 892 } else { 893 INIT_LIST_HEAD(&plane->head); 894 } 895 896 out: 897 drm_modeset_unlock_all(dev); 898 899 return ret; 900} 901EXPORT_SYMBOL(drm_plane_init); 902 903/** 904 * drm_plane_cleanup - Clean up the core plane usage 905 * @plane: plane to cleanup 906 * 907 * This function cleans up @plane and removes it from the DRM mode setting 908 * core. Note that the function does *not* free the plane structure itself, 909 * this is the responsibility of the caller. 910 */ 911void drm_plane_cleanup(struct drm_plane *plane) 912{ 913 struct drm_device *dev = plane->dev; 914 915 drm_modeset_lock_all(dev); 916 kfree(plane->format_types); 917 drm_mode_object_put(dev, &plane->base); 918 /* if not added to a list, it must be a private plane */ 919 if (!list_empty(&plane->head)) { 920 list_del(&plane->head); 921 dev->mode_config.num_plane--; 922 } 923 drm_modeset_unlock_all(dev); 924} 925EXPORT_SYMBOL(drm_plane_cleanup); 926 927/** 928 * drm_plane_force_disable - Forcibly disable a plane 929 * @plane: plane to disable 930 * 931 * Forces the plane to be disabled. 932 * 933 * Used when the plane's current framebuffer is destroyed, 934 * and when restoring fbdev mode. 935 */ 936void drm_plane_force_disable(struct drm_plane *plane) 937{ 938 int ret; 939 940 if (!plane->fb) 941 return; 942 943 ret = plane->funcs->disable_plane(plane); 944 if (ret) 945 DRM_ERROR("failed to disable plane with busy fb\n"); 946 /* disconnect the plane from the fb and crtc: */ 947 __drm_framebuffer_unreference(plane->fb); 948 plane->fb = NULL; 949 plane->crtc = NULL; 950} 951EXPORT_SYMBOL(drm_plane_force_disable); 952 953/** 954 * drm_mode_create - create a new display mode 955 * @dev: DRM device 956 * 957 * Create a new drm_display_mode, give it an ID, and return it. 958 * 959 * RETURNS: 960 * Pointer to new mode on success, NULL on error. 961 */ 962struct drm_display_mode *drm_mode_create(struct drm_device *dev) 963{ 964 struct drm_display_mode *nmode; 965 966 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 967 if (!nmode) 968 return NULL; 969 970 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { 971 kfree(nmode); 972 return NULL; 973 } 974 975 return nmode; 976} 977EXPORT_SYMBOL(drm_mode_create); 978 979/** 980 * drm_mode_destroy - remove a mode 981 * @dev: DRM device 982 * @mode: mode to remove 983 * 984 * Free @mode's unique identifier, then free it. 985 */ 986void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 987{ 988 if (!mode) 989 return; 990 991 drm_mode_object_put(dev, &mode->base); 992 993 kfree(mode); 994} 995EXPORT_SYMBOL(drm_mode_destroy); 996 997static int drm_mode_create_standard_connector_properties(struct drm_device *dev) 998{ 999 struct drm_property *edid; 1000 struct drm_property *dpms; 1001 1002 /* 1003 * Standard properties (apply to all connectors) 1004 */ 1005 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | 1006 DRM_MODE_PROP_IMMUTABLE, 1007 "EDID", 0); 1008 dev->mode_config.edid_property = edid; 1009 1010 dpms = drm_property_create_enum(dev, 0, 1011 "DPMS", drm_dpms_enum_list, 1012 ARRAY_SIZE(drm_dpms_enum_list)); 1013 dev->mode_config.dpms_property = dpms; 1014 1015 return 0; 1016} 1017 1018/** 1019 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties 1020 * @dev: DRM device 1021 * 1022 * Called by a driver the first time a DVI-I connector is made. 1023 */ 1024int drm_mode_create_dvi_i_properties(struct drm_device *dev) 1025{ 1026 struct drm_property *dvi_i_selector; 1027 struct drm_property *dvi_i_subconnector; 1028 1029 if (dev->mode_config.dvi_i_select_subconnector_property) 1030 return 0; 1031 1032 dvi_i_selector = 1033 drm_property_create_enum(dev, 0, 1034 "select subconnector", 1035 drm_dvi_i_select_enum_list, 1036 ARRAY_SIZE(drm_dvi_i_select_enum_list)); 1037 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; 1038 1039 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1040 "subconnector", 1041 drm_dvi_i_subconnector_enum_list, 1042 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); 1043 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; 1044 1045 return 0; 1046} 1047EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); 1048 1049/** 1050 * drm_create_tv_properties - create TV specific connector properties 1051 * @dev: DRM device 1052 * @num_modes: number of different TV formats (modes) supported 1053 * @modes: array of pointers to strings containing name of each format 1054 * 1055 * Called by a driver's TV initialization routine, this function creates 1056 * the TV specific connector properties for a given device. Caller is 1057 * responsible for allocating a list of format names and passing them to 1058 * this routine. 1059 */ 1060int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, 1061 char *modes[]) 1062{ 1063 struct drm_property *tv_selector; 1064 struct drm_property *tv_subconnector; 1065 int i; 1066 1067 if (dev->mode_config.tv_select_subconnector_property) 1068 return 0; 1069 1070 /* 1071 * Basic connector properties 1072 */ 1073 tv_selector = drm_property_create_enum(dev, 0, 1074 "select subconnector", 1075 drm_tv_select_enum_list, 1076 ARRAY_SIZE(drm_tv_select_enum_list)); 1077 dev->mode_config.tv_select_subconnector_property = tv_selector; 1078 1079 tv_subconnector = 1080 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1081 "subconnector", 1082 drm_tv_subconnector_enum_list, 1083 ARRAY_SIZE(drm_tv_subconnector_enum_list)); 1084 dev->mode_config.tv_subconnector_property = tv_subconnector; 1085 1086 /* 1087 * Other, TV specific properties: margins & TV modes. 1088 */ 1089 dev->mode_config.tv_left_margin_property = 1090 drm_property_create_range(dev, 0, "left margin", 0, 100); 1091 1092 dev->mode_config.tv_right_margin_property = 1093 drm_property_create_range(dev, 0, "right margin", 0, 100); 1094 1095 dev->mode_config.tv_top_margin_property = 1096 drm_property_create_range(dev, 0, "top margin", 0, 100); 1097 1098 dev->mode_config.tv_bottom_margin_property = 1099 drm_property_create_range(dev, 0, "bottom margin", 0, 100); 1100 1101 dev->mode_config.tv_mode_property = 1102 drm_property_create(dev, DRM_MODE_PROP_ENUM, 1103 "mode", num_modes); 1104 for (i = 0; i < num_modes; i++) 1105 drm_property_add_enum(dev->mode_config.tv_mode_property, i, 1106 i, modes[i]); 1107 1108 dev->mode_config.tv_brightness_property = 1109 drm_property_create_range(dev, 0, "brightness", 0, 100); 1110 1111 dev->mode_config.tv_contrast_property = 1112 drm_property_create_range(dev, 0, "contrast", 0, 100); 1113 1114 dev->mode_config.tv_flicker_reduction_property = 1115 drm_property_create_range(dev, 0, "flicker reduction", 0, 100); 1116 1117 dev->mode_config.tv_overscan_property = 1118 drm_property_create_range(dev, 0, "overscan", 0, 100); 1119 1120 dev->mode_config.tv_saturation_property = 1121 drm_property_create_range(dev, 0, "saturation", 0, 100); 1122 1123 dev->mode_config.tv_hue_property = 1124 drm_property_create_range(dev, 0, "hue", 0, 100); 1125 1126 return 0; 1127} 1128EXPORT_SYMBOL(drm_mode_create_tv_properties); 1129 1130/** 1131 * drm_mode_create_scaling_mode_property - create scaling mode property 1132 * @dev: DRM device 1133 * 1134 * Called by a driver the first time it's needed, must be attached to desired 1135 * connectors. 1136 */ 1137int drm_mode_create_scaling_mode_property(struct drm_device *dev) 1138{ 1139 struct drm_property *scaling_mode; 1140 1141 if (dev->mode_config.scaling_mode_property) 1142 return 0; 1143 1144 scaling_mode = 1145 drm_property_create_enum(dev, 0, "scaling mode", 1146 drm_scaling_mode_enum_list, 1147 ARRAY_SIZE(drm_scaling_mode_enum_list)); 1148 1149 dev->mode_config.scaling_mode_property = scaling_mode; 1150 1151 return 0; 1152} 1153EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); 1154 1155/** 1156 * drm_mode_create_dirty_property - create dirty property 1157 * @dev: DRM device 1158 * 1159 * Called by a driver the first time it's needed, must be attached to desired 1160 * connectors. 1161 */ 1162int drm_mode_create_dirty_info_property(struct drm_device *dev) 1163{ 1164 struct drm_property *dirty_info; 1165 1166 if (dev->mode_config.dirty_info_property) 1167 return 0; 1168 1169 dirty_info = 1170 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1171 "dirty", 1172 drm_dirty_info_enum_list, 1173 ARRAY_SIZE(drm_dirty_info_enum_list)); 1174 dev->mode_config.dirty_info_property = dirty_info; 1175 1176 return 0; 1177} 1178EXPORT_SYMBOL(drm_mode_create_dirty_info_property); 1179 1180static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) 1181{ 1182 uint32_t total_objects = 0; 1183 1184 total_objects += dev->mode_config.num_crtc; 1185 total_objects += dev->mode_config.num_connector; 1186 total_objects += dev->mode_config.num_encoder; 1187 1188 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); 1189 if (!group->id_list) 1190 return -ENOMEM; 1191 1192 group->num_crtcs = 0; 1193 group->num_connectors = 0; 1194 group->num_encoders = 0; 1195 return 0; 1196} 1197 1198int drm_mode_group_init_legacy_group(struct drm_device *dev, 1199 struct drm_mode_group *group) 1200{ 1201 struct drm_crtc *crtc; 1202 struct drm_encoder *encoder; 1203 struct drm_connector *connector; 1204 int ret; 1205 1206 if ((ret = drm_mode_group_init(dev, group))) 1207 return ret; 1208 1209 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 1210 group->id_list[group->num_crtcs++] = crtc->base.id; 1211 1212 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 1213 group->id_list[group->num_crtcs + group->num_encoders++] = 1214 encoder->base.id; 1215 1216 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 1217 group->id_list[group->num_crtcs + group->num_encoders + 1218 group->num_connectors++] = connector->base.id; 1219 1220 return 0; 1221} 1222EXPORT_SYMBOL(drm_mode_group_init_legacy_group); 1223 1224/** 1225 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo 1226 * @out: drm_mode_modeinfo struct to return to the user 1227 * @in: drm_display_mode to use 1228 * 1229 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 1230 * the user. 1231 */ 1232static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, 1233 const struct drm_display_mode *in) 1234{ 1235 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || 1236 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || 1237 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || 1238 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || 1239 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, 1240 "timing values too large for mode info\n"); 1241 1242 out->clock = in->clock; 1243 out->hdisplay = in->hdisplay; 1244 out->hsync_start = in->hsync_start; 1245 out->hsync_end = in->hsync_end; 1246 out->htotal = in->htotal; 1247 out->hskew = in->hskew; 1248 out->vdisplay = in->vdisplay; 1249 out->vsync_start = in->vsync_start; 1250 out->vsync_end = in->vsync_end; 1251 out->vtotal = in->vtotal; 1252 out->vscan = in->vscan; 1253 out->vrefresh = in->vrefresh; 1254 out->flags = in->flags; 1255 out->type = in->type; 1256 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1257 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1258} 1259 1260/** 1261 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode 1262 * @out: drm_display_mode to return to the user 1263 * @in: drm_mode_modeinfo to use 1264 * 1265 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 1266 * the caller. 1267 * 1268 * RETURNS: 1269 * Zero on success, errno on failure. 1270 */ 1271static int drm_crtc_convert_umode(struct drm_display_mode *out, 1272 const struct drm_mode_modeinfo *in) 1273{ 1274 if (in->clock > INT_MAX || in->vrefresh > INT_MAX) 1275 return -ERANGE; 1276 1277 out->clock = in->clock; 1278 out->hdisplay = in->hdisplay; 1279 out->hsync_start = in->hsync_start; 1280 out->hsync_end = in->hsync_end; 1281 out->htotal = in->htotal; 1282 out->hskew = in->hskew; 1283 out->vdisplay = in->vdisplay; 1284 out->vsync_start = in->vsync_start; 1285 out->vsync_end = in->vsync_end; 1286 out->vtotal = in->vtotal; 1287 out->vscan = in->vscan; 1288 out->vrefresh = in->vrefresh; 1289 out->flags = in->flags; 1290 out->type = in->type; 1291 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1292 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1293 1294 return 0; 1295} 1296 1297/** 1298 * drm_mode_getresources - get graphics configuration 1299 * @dev: drm device for the ioctl 1300 * @data: data pointer for the ioctl 1301 * @file_priv: drm file for the ioctl call 1302 * 1303 * Construct a set of configuration description structures and return 1304 * them to the user, including CRTC, connector and framebuffer configuration. 1305 * 1306 * Called by the user via ioctl. 1307 * 1308 * RETURNS: 1309 * Zero on success, errno on failure. 1310 */ 1311int drm_mode_getresources(struct drm_device *dev, void *data, 1312 struct drm_file *file_priv) 1313{ 1314 struct drm_mode_card_res *card_res = data; 1315 struct list_head *lh; 1316 struct drm_framebuffer *fb; 1317 struct drm_connector *connector; 1318 struct drm_crtc *crtc; 1319 struct drm_encoder *encoder; 1320 int ret = 0; 1321 int connector_count = 0; 1322 int crtc_count = 0; 1323 int fb_count = 0; 1324 int encoder_count = 0; 1325 int copied = 0, i; 1326 uint32_t __user *fb_id; 1327 uint32_t __user *crtc_id; 1328 uint32_t __user *connector_id; 1329 uint32_t __user *encoder_id; 1330 struct drm_mode_group *mode_group; 1331 1332 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1333 return -EINVAL; 1334 1335 1336 mutex_lock(&file_priv->fbs_lock); 1337 /* 1338 * For the non-control nodes we need to limit the list of resources 1339 * by IDs in the group list for this node 1340 */ 1341 list_for_each(lh, &file_priv->fbs) 1342 fb_count++; 1343 1344 /* handle this in 4 parts */ 1345 /* FBs */ 1346 if (card_res->count_fbs >= fb_count) { 1347 copied = 0; 1348 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; 1349 list_for_each_entry(fb, &file_priv->fbs, filp_head) { 1350 if (put_user(fb->base.id, fb_id + copied)) { 1351 mutex_unlock(&file_priv->fbs_lock); 1352 return -EFAULT; 1353 } 1354 copied++; 1355 } 1356 } 1357 card_res->count_fbs = fb_count; 1358 mutex_unlock(&file_priv->fbs_lock); 1359 1360 drm_modeset_lock_all(dev); 1361 mode_group = &file_priv->master->minor->mode_group; 1362 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1363 1364 list_for_each(lh, &dev->mode_config.crtc_list) 1365 crtc_count++; 1366 1367 list_for_each(lh, &dev->mode_config.connector_list) 1368 connector_count++; 1369 1370 list_for_each(lh, &dev->mode_config.encoder_list) 1371 encoder_count++; 1372 } else { 1373 1374 crtc_count = mode_group->num_crtcs; 1375 connector_count = mode_group->num_connectors; 1376 encoder_count = mode_group->num_encoders; 1377 } 1378 1379 card_res->max_height = dev->mode_config.max_height; 1380 card_res->min_height = dev->mode_config.min_height; 1381 card_res->max_width = dev->mode_config.max_width; 1382 card_res->min_width = dev->mode_config.min_width; 1383 1384 /* CRTCs */ 1385 if (card_res->count_crtcs >= crtc_count) { 1386 copied = 0; 1387 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; 1388 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1389 list_for_each_entry(crtc, &dev->mode_config.crtc_list, 1390 head) { 1391 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1392 if (put_user(crtc->base.id, crtc_id + copied)) { 1393 ret = -EFAULT; 1394 goto out; 1395 } 1396 copied++; 1397 } 1398 } else { 1399 for (i = 0; i < mode_group->num_crtcs; i++) { 1400 if (put_user(mode_group->id_list[i], 1401 crtc_id + copied)) { 1402 ret = -EFAULT; 1403 goto out; 1404 } 1405 copied++; 1406 } 1407 } 1408 } 1409 card_res->count_crtcs = crtc_count; 1410 1411 /* Encoders */ 1412 if (card_res->count_encoders >= encoder_count) { 1413 copied = 0; 1414 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; 1415 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1416 list_for_each_entry(encoder, 1417 &dev->mode_config.encoder_list, 1418 head) { 1419 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, 1420 drm_get_encoder_name(encoder)); 1421 if (put_user(encoder->base.id, encoder_id + 1422 copied)) { 1423 ret = -EFAULT; 1424 goto out; 1425 } 1426 copied++; 1427 } 1428 } else { 1429 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { 1430 if (put_user(mode_group->id_list[i], 1431 encoder_id + copied)) { 1432 ret = -EFAULT; 1433 goto out; 1434 } 1435 copied++; 1436 } 1437 1438 } 1439 } 1440 card_res->count_encoders = encoder_count; 1441 1442 /* Connectors */ 1443 if (card_res->count_connectors >= connector_count) { 1444 copied = 0; 1445 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; 1446 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1447 list_for_each_entry(connector, 1448 &dev->mode_config.connector_list, 1449 head) { 1450 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 1451 connector->base.id, 1452 drm_get_connector_name(connector)); 1453 if (put_user(connector->base.id, 1454 connector_id + copied)) { 1455 ret = -EFAULT; 1456 goto out; 1457 } 1458 copied++; 1459 } 1460 } else { 1461 int start = mode_group->num_crtcs + 1462 mode_group->num_encoders; 1463 for (i = start; i < start + mode_group->num_connectors; i++) { 1464 if (put_user(mode_group->id_list[i], 1465 connector_id + copied)) { 1466 ret = -EFAULT; 1467 goto out; 1468 } 1469 copied++; 1470 } 1471 } 1472 } 1473 card_res->count_connectors = connector_count; 1474 1475 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, 1476 card_res->count_connectors, card_res->count_encoders); 1477 1478out: 1479 drm_modeset_unlock_all(dev); 1480 return ret; 1481} 1482 1483/** 1484 * drm_mode_getcrtc - get CRTC configuration 1485 * @dev: drm device for the ioctl 1486 * @data: data pointer for the ioctl 1487 * @file_priv: drm file for the ioctl call 1488 * 1489 * Construct a CRTC configuration structure to return to the user. 1490 * 1491 * Called by the user via ioctl. 1492 * 1493 * RETURNS: 1494 * Zero on success, errno on failure. 1495 */ 1496int drm_mode_getcrtc(struct drm_device *dev, 1497 void *data, struct drm_file *file_priv) 1498{ 1499 struct drm_mode_crtc *crtc_resp = data; 1500 struct drm_crtc *crtc; 1501 struct drm_mode_object *obj; 1502 int ret = 0; 1503 1504 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1505 return -EINVAL; 1506 1507 drm_modeset_lock_all(dev); 1508 1509 obj = drm_mode_object_find(dev, crtc_resp->crtc_id, 1510 DRM_MODE_OBJECT_CRTC); 1511 if (!obj) { 1512 ret = -EINVAL; 1513 goto out; 1514 } 1515 crtc = obj_to_crtc(obj); 1516 1517 crtc_resp->x = crtc->x; 1518 crtc_resp->y = crtc->y; 1519 crtc_resp->gamma_size = crtc->gamma_size; 1520 if (crtc->fb) 1521 crtc_resp->fb_id = crtc->fb->base.id; 1522 else 1523 crtc_resp->fb_id = 0; 1524 1525 if (crtc->enabled) { 1526 1527 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); 1528 crtc_resp->mode_valid = 1; 1529 1530 } else { 1531 crtc_resp->mode_valid = 0; 1532 } 1533 1534out: 1535 drm_modeset_unlock_all(dev); 1536 return ret; 1537} 1538 1539/** 1540 * drm_mode_getconnector - get connector configuration 1541 * @dev: drm device for the ioctl 1542 * @data: data pointer for the ioctl 1543 * @file_priv: drm file for the ioctl call 1544 * 1545 * Construct a connector configuration structure to return to the user. 1546 * 1547 * Called by the user via ioctl. 1548 * 1549 * RETURNS: 1550 * Zero on success, errno on failure. 1551 */ 1552int drm_mode_getconnector(struct drm_device *dev, void *data, 1553 struct drm_file *file_priv) 1554{ 1555 struct drm_mode_get_connector *out_resp = data; 1556 struct drm_mode_object *obj; 1557 struct drm_connector *connector; 1558 struct drm_display_mode *mode; 1559 int mode_count = 0; 1560 int props_count = 0; 1561 int encoders_count = 0; 1562 int ret = 0; 1563 int copied = 0; 1564 int i; 1565 struct drm_mode_modeinfo u_mode; 1566 struct drm_mode_modeinfo __user *mode_ptr; 1567 uint32_t __user *prop_ptr; 1568 uint64_t __user *prop_values; 1569 uint32_t __user *encoder_ptr; 1570 1571 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1572 return -EINVAL; 1573 1574 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); 1575 1576 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); 1577 1578 mutex_lock(&dev->mode_config.mutex); 1579 1580 obj = drm_mode_object_find(dev, out_resp->connector_id, 1581 DRM_MODE_OBJECT_CONNECTOR); 1582 if (!obj) { 1583 ret = -EINVAL; 1584 goto out; 1585 } 1586 connector = obj_to_connector(obj); 1587 1588 props_count = connector->properties.count; 1589 1590 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1591 if (connector->encoder_ids[i] != 0) { 1592 encoders_count++; 1593 } 1594 } 1595 1596 if (out_resp->count_modes == 0) { 1597 connector->funcs->fill_modes(connector, 1598 dev->mode_config.max_width, 1599 dev->mode_config.max_height); 1600 } 1601 1602 /* delayed so we get modes regardless of pre-fill_modes state */ 1603 list_for_each_entry(mode, &connector->modes, head) 1604 mode_count++; 1605 1606 out_resp->connector_id = connector->base.id; 1607 out_resp->connector_type = connector->connector_type; 1608 out_resp->connector_type_id = connector->connector_type_id; 1609 out_resp->mm_width = connector->display_info.width_mm; 1610 out_resp->mm_height = connector->display_info.height_mm; 1611 out_resp->subpixel = connector->display_info.subpixel_order; 1612 out_resp->connection = connector->status; 1613 if (connector->encoder) 1614 out_resp->encoder_id = connector->encoder->base.id; 1615 else 1616 out_resp->encoder_id = 0; 1617 1618 /* 1619 * This ioctl is called twice, once to determine how much space is 1620 * needed, and the 2nd time to fill it. 1621 */ 1622 if ((out_resp->count_modes >= mode_count) && mode_count) { 1623 copied = 0; 1624 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; 1625 list_for_each_entry(mode, &connector->modes, head) { 1626 drm_crtc_convert_to_umode(&u_mode, mode); 1627 if (copy_to_user(mode_ptr + copied, 1628 &u_mode, sizeof(u_mode))) { 1629 ret = -EFAULT; 1630 goto out; 1631 } 1632 copied++; 1633 } 1634 } 1635 out_resp->count_modes = mode_count; 1636 1637 if ((out_resp->count_props >= props_count) && props_count) { 1638 copied = 0; 1639 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); 1640 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); 1641 for (i = 0; i < connector->properties.count; i++) { 1642 if (put_user(connector->properties.ids[i], 1643 prop_ptr + copied)) { 1644 ret = -EFAULT; 1645 goto out; 1646 } 1647 1648 if (put_user(connector->properties.values[i], 1649 prop_values + copied)) { 1650 ret = -EFAULT; 1651 goto out; 1652 } 1653 copied++; 1654 } 1655 } 1656 out_resp->count_props = props_count; 1657 1658 if ((out_resp->count_encoders >= encoders_count) && encoders_count) { 1659 copied = 0; 1660 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); 1661 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1662 if (connector->encoder_ids[i] != 0) { 1663 if (put_user(connector->encoder_ids[i], 1664 encoder_ptr + copied)) { 1665 ret = -EFAULT; 1666 goto out; 1667 } 1668 copied++; 1669 } 1670 } 1671 } 1672 out_resp->count_encoders = encoders_count; 1673 1674out: 1675 mutex_unlock(&dev->mode_config.mutex); 1676 1677 return ret; 1678} 1679 1680int drm_mode_getencoder(struct drm_device *dev, void *data, 1681 struct drm_file *file_priv) 1682{ 1683 struct drm_mode_get_encoder *enc_resp = data; 1684 struct drm_mode_object *obj; 1685 struct drm_encoder *encoder; 1686 int ret = 0; 1687 1688 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1689 return -EINVAL; 1690 1691 drm_modeset_lock_all(dev); 1692 obj = drm_mode_object_find(dev, enc_resp->encoder_id, 1693 DRM_MODE_OBJECT_ENCODER); 1694 if (!obj) { 1695 ret = -EINVAL; 1696 goto out; 1697 } 1698 encoder = obj_to_encoder(obj); 1699 1700 if (encoder->crtc) 1701 enc_resp->crtc_id = encoder->crtc->base.id; 1702 else 1703 enc_resp->crtc_id = 0; 1704 enc_resp->encoder_type = encoder->encoder_type; 1705 enc_resp->encoder_id = encoder->base.id; 1706 enc_resp->possible_crtcs = encoder->possible_crtcs; 1707 enc_resp->possible_clones = encoder->possible_clones; 1708 1709out: 1710 drm_modeset_unlock_all(dev); 1711 return ret; 1712} 1713 1714/** 1715 * drm_mode_getplane_res - get plane info 1716 * @dev: DRM device 1717 * @data: ioctl data 1718 * @file_priv: DRM file info 1719 * 1720 * Return an plane count and set of IDs. 1721 */ 1722int drm_mode_getplane_res(struct drm_device *dev, void *data, 1723 struct drm_file *file_priv) 1724{ 1725 struct drm_mode_get_plane_res *plane_resp = data; 1726 struct drm_mode_config *config; 1727 struct drm_plane *plane; 1728 uint32_t __user *plane_ptr; 1729 int copied = 0, ret = 0; 1730 1731 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1732 return -EINVAL; 1733 1734 drm_modeset_lock_all(dev); 1735 config = &dev->mode_config; 1736 1737 /* 1738 * This ioctl is called twice, once to determine how much space is 1739 * needed, and the 2nd time to fill it. 1740 */ 1741 if (config->num_plane && 1742 (plane_resp->count_planes >= config->num_plane)) { 1743 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; 1744 1745 list_for_each_entry(plane, &config->plane_list, head) { 1746 if (put_user(plane->base.id, plane_ptr + copied)) { 1747 ret = -EFAULT; 1748 goto out; 1749 } 1750 copied++; 1751 } 1752 } 1753 plane_resp->count_planes = config->num_plane; 1754 1755out: 1756 drm_modeset_unlock_all(dev); 1757 return ret; 1758} 1759 1760/** 1761 * drm_mode_getplane - get plane info 1762 * @dev: DRM device 1763 * @data: ioctl data 1764 * @file_priv: DRM file info 1765 * 1766 * Return plane info, including formats supported, gamma size, any 1767 * current fb, etc. 1768 */ 1769int drm_mode_getplane(struct drm_device *dev, void *data, 1770 struct drm_file *file_priv) 1771{ 1772 struct drm_mode_get_plane *plane_resp = data; 1773 struct drm_mode_object *obj; 1774 struct drm_plane *plane; 1775 uint32_t __user *format_ptr; 1776 int ret = 0; 1777 1778 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1779 return -EINVAL; 1780 1781 drm_modeset_lock_all(dev); 1782 obj = drm_mode_object_find(dev, plane_resp->plane_id, 1783 DRM_MODE_OBJECT_PLANE); 1784 if (!obj) { 1785 ret = -ENOENT; 1786 goto out; 1787 } 1788 plane = obj_to_plane(obj); 1789 1790 if (plane->crtc) 1791 plane_resp->crtc_id = plane->crtc->base.id; 1792 else 1793 plane_resp->crtc_id = 0; 1794 1795 if (plane->fb) 1796 plane_resp->fb_id = plane->fb->base.id; 1797 else 1798 plane_resp->fb_id = 0; 1799 1800 plane_resp->plane_id = plane->base.id; 1801 plane_resp->possible_crtcs = plane->possible_crtcs; 1802 plane_resp->gamma_size = 0; 1803 1804 /* 1805 * This ioctl is called twice, once to determine how much space is 1806 * needed, and the 2nd time to fill it. 1807 */ 1808 if (plane->format_count && 1809 (plane_resp->count_format_types >= plane->format_count)) { 1810 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; 1811 if (copy_to_user(format_ptr, 1812 plane->format_types, 1813 sizeof(uint32_t) * plane->format_count)) { 1814 ret = -EFAULT; 1815 goto out; 1816 } 1817 } 1818 plane_resp->count_format_types = plane->format_count; 1819 1820out: 1821 drm_modeset_unlock_all(dev); 1822 return ret; 1823} 1824 1825/** 1826 * drm_mode_setplane - set up or tear down an plane 1827 * @dev: DRM device 1828 * @data: ioctl data* 1829 * @file_priv: DRM file info 1830 * 1831 * Set plane info, including placement, fb, scaling, and other factors. 1832 * Or pass a NULL fb to disable. 1833 */ 1834int drm_mode_setplane(struct drm_device *dev, void *data, 1835 struct drm_file *file_priv) 1836{ 1837 struct drm_mode_set_plane *plane_req = data; 1838 struct drm_mode_object *obj; 1839 struct drm_plane *plane; 1840 struct drm_crtc *crtc; 1841 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 1842 int ret = 0; 1843 unsigned int fb_width, fb_height; 1844 int i; 1845 1846 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1847 return -EINVAL; 1848 1849 /* 1850 * First, find the plane, crtc, and fb objects. If not available, 1851 * we don't bother to call the driver. 1852 */ 1853 obj = drm_mode_object_find(dev, plane_req->plane_id, 1854 DRM_MODE_OBJECT_PLANE); 1855 if (!obj) { 1856 DRM_DEBUG_KMS("Unknown plane ID %d\n", 1857 plane_req->plane_id); 1858 return -ENOENT; 1859 } 1860 plane = obj_to_plane(obj); 1861 1862 /* No fb means shut it down */ 1863 if (!plane_req->fb_id) { 1864 drm_modeset_lock_all(dev); 1865 old_fb = plane->fb; 1866 plane->funcs->disable_plane(plane); 1867 plane->crtc = NULL; 1868 plane->fb = NULL; 1869 drm_modeset_unlock_all(dev); 1870 goto out; 1871 } 1872 1873 obj = drm_mode_object_find(dev, plane_req->crtc_id, 1874 DRM_MODE_OBJECT_CRTC); 1875 if (!obj) { 1876 DRM_DEBUG_KMS("Unknown crtc ID %d\n", 1877 plane_req->crtc_id); 1878 ret = -ENOENT; 1879 goto out; 1880 } 1881 crtc = obj_to_crtc(obj); 1882 1883 fb = drm_framebuffer_lookup(dev, plane_req->fb_id); 1884 if (!fb) { 1885 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", 1886 plane_req->fb_id); 1887 ret = -ENOENT; 1888 goto out; 1889 } 1890 1891 /* Check whether this plane supports the fb pixel format. */ 1892 for (i = 0; i < plane->format_count; i++) 1893 if (fb->pixel_format == plane->format_types[i]) 1894 break; 1895 if (i == plane->format_count) { 1896 DRM_DEBUG_KMS("Invalid pixel format %s\n", 1897 drm_get_format_name(fb->pixel_format)); 1898 ret = -EINVAL; 1899 goto out; 1900 } 1901 1902 fb_width = fb->width << 16; 1903 fb_height = fb->height << 16; 1904 1905 /* Make sure source coordinates are inside the fb. */ 1906 if (plane_req->src_w > fb_width || 1907 plane_req->src_x > fb_width - plane_req->src_w || 1908 plane_req->src_h > fb_height || 1909 plane_req->src_y > fb_height - plane_req->src_h) { 1910 DRM_DEBUG_KMS("Invalid source coordinates " 1911 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", 1912 plane_req->src_w >> 16, 1913 ((plane_req->src_w & 0xffff) * 15625) >> 10, 1914 plane_req->src_h >> 16, 1915 ((plane_req->src_h & 0xffff) * 15625) >> 10, 1916 plane_req->src_x >> 16, 1917 ((plane_req->src_x & 0xffff) * 15625) >> 10, 1918 plane_req->src_y >> 16, 1919 ((plane_req->src_y & 0xffff) * 15625) >> 10); 1920 ret = -ENOSPC; 1921 goto out; 1922 } 1923 1924 /* Give drivers some help against integer overflows */ 1925 if (plane_req->crtc_w > INT_MAX || 1926 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || 1927 plane_req->crtc_h > INT_MAX || 1928 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { 1929 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", 1930 plane_req->crtc_w, plane_req->crtc_h, 1931 plane_req->crtc_x, plane_req->crtc_y); 1932 ret = -ERANGE; 1933 goto out; 1934 } 1935 1936 drm_modeset_lock_all(dev); 1937 ret = plane->funcs->update_plane(plane, crtc, fb, 1938 plane_req->crtc_x, plane_req->crtc_y, 1939 plane_req->crtc_w, plane_req->crtc_h, 1940 plane_req->src_x, plane_req->src_y, 1941 plane_req->src_w, plane_req->src_h); 1942 if (!ret) { 1943 old_fb = plane->fb; 1944 plane->crtc = crtc; 1945 plane->fb = fb; 1946 fb = NULL; 1947 } 1948 drm_modeset_unlock_all(dev); 1949 1950out: 1951 if (fb) 1952 drm_framebuffer_unreference(fb); 1953 if (old_fb) 1954 drm_framebuffer_unreference(old_fb); 1955 1956 return ret; 1957} 1958 1959/** 1960 * drm_mode_set_config_internal - helper to call ->set_config 1961 * @set: modeset config to set 1962 * 1963 * This is a little helper to wrap internal calls to the ->set_config driver 1964 * interface. The only thing it adds is correct refcounting dance. 1965 */ 1966int drm_mode_set_config_internal(struct drm_mode_set *set) 1967{ 1968 struct drm_crtc *crtc = set->crtc; 1969 struct drm_framebuffer *fb; 1970 struct drm_crtc *tmp; 1971 int ret; 1972 1973 /* 1974 * NOTE: ->set_config can also disable other crtcs (if we steal all 1975 * connectors from it), hence we need to refcount the fbs across all 1976 * crtcs. Atomic modeset will have saner semantics ... 1977 */ 1978 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) 1979 tmp->old_fb = tmp->fb; 1980 1981 fb = set->fb; 1982 1983 ret = crtc->funcs->set_config(set); 1984 if (ret == 0) { 1985 /* crtc->fb must be updated by ->set_config, enforces this. */ 1986 WARN_ON(fb != crtc->fb); 1987 } 1988 1989 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) { 1990 if (tmp->fb) 1991 drm_framebuffer_reference(tmp->fb); 1992 if (tmp->old_fb) 1993 drm_framebuffer_unreference(tmp->old_fb); 1994 } 1995 1996 return ret; 1997} 1998EXPORT_SYMBOL(drm_mode_set_config_internal); 1999 2000/** 2001 * drm_mode_setcrtc - set CRTC configuration 2002 * @dev: drm device for the ioctl 2003 * @data: data pointer for the ioctl 2004 * @file_priv: drm file for the ioctl call 2005 * 2006 * Build a new CRTC configuration based on user request. 2007 * 2008 * Called by the user via ioctl. 2009 * 2010 * RETURNS: 2011 * Zero on success, errno on failure. 2012 */ 2013int drm_mode_setcrtc(struct drm_device *dev, void *data, 2014 struct drm_file *file_priv) 2015{ 2016 struct drm_mode_config *config = &dev->mode_config; 2017 struct drm_mode_crtc *crtc_req = data; 2018 struct drm_mode_object *obj; 2019 struct drm_crtc *crtc; 2020 struct drm_connector **connector_set = NULL, *connector; 2021 struct drm_framebuffer *fb = NULL; 2022 struct drm_display_mode *mode = NULL; 2023 struct drm_mode_set set; 2024 uint32_t __user *set_connectors_ptr; 2025 int ret; 2026 int i; 2027 2028 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2029 return -EINVAL; 2030 2031 /* For some reason crtc x/y offsets are signed internally. */ 2032 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) 2033 return -ERANGE; 2034 2035 drm_modeset_lock_all(dev); 2036 obj = drm_mode_object_find(dev, crtc_req->crtc_id, 2037 DRM_MODE_OBJECT_CRTC); 2038 if (!obj) { 2039 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 2040 ret = -EINVAL; 2041 goto out; 2042 } 2043 crtc = obj_to_crtc(obj); 2044 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 2045 2046 if (crtc_req->mode_valid) { 2047 int hdisplay, vdisplay; 2048 /* If we have a mode we need a framebuffer. */ 2049 /* If we pass -1, set the mode with the currently bound fb */ 2050 if (crtc_req->fb_id == -1) { 2051 if (!crtc->fb) { 2052 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 2053 ret = -EINVAL; 2054 goto out; 2055 } 2056 fb = crtc->fb; 2057 /* Make refcounting symmetric with the lookup path. */ 2058 drm_framebuffer_reference(fb); 2059 } else { 2060 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); 2061 if (!fb) { 2062 DRM_DEBUG_KMS("Unknown FB ID%d\n", 2063 crtc_req->fb_id); 2064 ret = -EINVAL; 2065 goto out; 2066 } 2067 } 2068 2069 mode = drm_mode_create(dev); 2070 if (!mode) { 2071 ret = -ENOMEM; 2072 goto out; 2073 } 2074 2075 ret = drm_crtc_convert_umode(mode, &crtc_req->mode); 2076 if (ret) { 2077 DRM_DEBUG_KMS("Invalid mode\n"); 2078 goto out; 2079 } 2080 2081 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 2082 2083 hdisplay = mode->hdisplay; 2084 vdisplay = mode->vdisplay; 2085 2086 if (crtc->invert_dimensions) 2087 swap(hdisplay, vdisplay); 2088 2089 if (hdisplay > fb->width || 2090 vdisplay > fb->height || 2091 crtc_req->x > fb->width - hdisplay || 2092 crtc_req->y > fb->height - vdisplay) { 2093 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 2094 fb->width, fb->height, 2095 hdisplay, vdisplay, crtc_req->x, crtc_req->y, 2096 crtc->invert_dimensions ? " (inverted)" : ""); 2097 ret = -ENOSPC; 2098 goto out; 2099 } 2100 } 2101 2102 if (crtc_req->count_connectors == 0 && mode) { 2103 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 2104 ret = -EINVAL; 2105 goto out; 2106 } 2107 2108 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 2109 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 2110 crtc_req->count_connectors); 2111 ret = -EINVAL; 2112 goto out; 2113 } 2114 2115 if (crtc_req->count_connectors > 0) { 2116 u32 out_id; 2117 2118 /* Avoid unbounded kernel memory allocation */ 2119 if (crtc_req->count_connectors > config->num_connector) { 2120 ret = -EINVAL; 2121 goto out; 2122 } 2123 2124 connector_set = kmalloc(crtc_req->count_connectors * 2125 sizeof(struct drm_connector *), 2126 GFP_KERNEL); 2127 if (!connector_set) { 2128 ret = -ENOMEM; 2129 goto out; 2130 } 2131 2132 for (i = 0; i < crtc_req->count_connectors; i++) { 2133 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 2134 if (get_user(out_id, &set_connectors_ptr[i])) { 2135 ret = -EFAULT; 2136 goto out; 2137 } 2138 2139 obj = drm_mode_object_find(dev, out_id, 2140 DRM_MODE_OBJECT_CONNECTOR); 2141 if (!obj) { 2142 DRM_DEBUG_KMS("Connector id %d unknown\n", 2143 out_id); 2144 ret = -EINVAL; 2145 goto out; 2146 } 2147 connector = obj_to_connector(obj); 2148 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 2149 connector->base.id, 2150 drm_get_connector_name(connector)); 2151 2152 connector_set[i] = connector; 2153 } 2154 } 2155 2156 set.crtc = crtc; 2157 set.x = crtc_req->x; 2158 set.y = crtc_req->y; 2159 set.mode = mode; 2160 set.connectors = connector_set; 2161 set.num_connectors = crtc_req->count_connectors; 2162 set.fb = fb; 2163 ret = drm_mode_set_config_internal(&set); 2164 2165out: 2166 if (fb) 2167 drm_framebuffer_unreference(fb); 2168 2169 kfree(connector_set); 2170 drm_mode_destroy(dev, mode); 2171 drm_modeset_unlock_all(dev); 2172 return ret; 2173} 2174 2175static int drm_mode_cursor_common(struct drm_device *dev, 2176 struct drm_mode_cursor2 *req, 2177 struct drm_file *file_priv) 2178{ 2179 struct drm_mode_object *obj; 2180 struct drm_crtc *crtc; 2181 int ret = 0; 2182 2183 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2184 return -EINVAL; 2185 2186 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) 2187 return -EINVAL; 2188 2189 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); 2190 if (!obj) { 2191 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); 2192 return -EINVAL; 2193 } 2194 crtc = obj_to_crtc(obj); 2195 2196 mutex_lock(&crtc->mutex); 2197 if (req->flags & DRM_MODE_CURSOR_BO) { 2198 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { 2199 ret = -ENXIO; 2200 goto out; 2201 } 2202 /* Turns off the cursor if handle is 0 */ 2203 if (crtc->funcs->cursor_set2) 2204 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, 2205 req->width, req->height, req->hot_x, req->hot_y); 2206 else 2207 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, 2208 req->width, req->height); 2209 } 2210 2211 if (req->flags & DRM_MODE_CURSOR_MOVE) { 2212 if (crtc->funcs->cursor_move) { 2213 ret = crtc->funcs->cursor_move(crtc, req->x, req->y); 2214 } else { 2215 ret = -EFAULT; 2216 goto out; 2217 } 2218 } 2219out: 2220 mutex_unlock(&crtc->mutex); 2221 2222 return ret; 2223 2224} 2225int drm_mode_cursor_ioctl(struct drm_device *dev, 2226 void *data, struct drm_file *file_priv) 2227{ 2228 struct drm_mode_cursor *req = data; 2229 struct drm_mode_cursor2 new_req; 2230 2231 memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); 2232 new_req.hot_x = new_req.hot_y = 0; 2233 2234 return drm_mode_cursor_common(dev, &new_req, file_priv); 2235} 2236 2237int drm_mode_cursor2_ioctl(struct drm_device *dev, 2238 void *data, struct drm_file *file_priv) 2239{ 2240 struct drm_mode_cursor2 *req = data; 2241 return drm_mode_cursor_common(dev, req, file_priv); 2242} 2243 2244/* Original addfb only supported RGB formats, so figure out which one */ 2245uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 2246{ 2247 uint32_t fmt; 2248 2249 switch (bpp) { 2250 case 8: 2251 fmt = DRM_FORMAT_C8; 2252 break; 2253 case 16: 2254 if (depth == 15) 2255 fmt = DRM_FORMAT_XRGB1555; 2256 else 2257 fmt = DRM_FORMAT_RGB565; 2258 break; 2259 case 24: 2260 fmt = DRM_FORMAT_RGB888; 2261 break; 2262 case 32: 2263 if (depth == 24) 2264 fmt = DRM_FORMAT_XRGB8888; 2265 else if (depth == 30) 2266 fmt = DRM_FORMAT_XRGB2101010; 2267 else 2268 fmt = DRM_FORMAT_ARGB8888; 2269 break; 2270 default: 2271 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); 2272 fmt = DRM_FORMAT_XRGB8888; 2273 break; 2274 } 2275 2276 return fmt; 2277} 2278EXPORT_SYMBOL(drm_mode_legacy_fb_format); 2279 2280/** 2281 * drm_mode_addfb - add an FB to the graphics configuration 2282 * @dev: drm device for the ioctl 2283 * @data: data pointer for the ioctl 2284 * @file_priv: drm file for the ioctl call 2285 * 2286 * Add a new FB to the specified CRTC, given a user request. 2287 * 2288 * Called by the user via ioctl. 2289 * 2290 * RETURNS: 2291 * Zero on success, errno on failure. 2292 */ 2293int drm_mode_addfb(struct drm_device *dev, 2294 void *data, struct drm_file *file_priv) 2295{ 2296 struct drm_mode_fb_cmd *or = data; 2297 struct drm_mode_fb_cmd2 r = {}; 2298 struct drm_mode_config *config = &dev->mode_config; 2299 struct drm_framebuffer *fb; 2300 int ret = 0; 2301 2302 /* Use new struct with format internally */ 2303 r.fb_id = or->fb_id; 2304 r.width = or->width; 2305 r.height = or->height; 2306 r.pitches[0] = or->pitch; 2307 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); 2308 r.handles[0] = or->handle; 2309 2310 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2311 return -EINVAL; 2312 2313 if ((config->min_width > r.width) || (r.width > config->max_width)) 2314 return -EINVAL; 2315 2316 if ((config->min_height > r.height) || (r.height > config->max_height)) 2317 return -EINVAL; 2318 2319 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); 2320 if (IS_ERR(fb)) { 2321 DRM_DEBUG_KMS("could not create framebuffer\n"); 2322 return PTR_ERR(fb); 2323 } 2324 2325 mutex_lock(&file_priv->fbs_lock); 2326 or->fb_id = fb->base.id; 2327 list_add(&fb->filp_head, &file_priv->fbs); 2328 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2329 mutex_unlock(&file_priv->fbs_lock); 2330 2331 return ret; 2332} 2333 2334static int format_check(const struct drm_mode_fb_cmd2 *r) 2335{ 2336 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; 2337 2338 switch (format) { 2339 case DRM_FORMAT_C8: 2340 case DRM_FORMAT_RGB332: 2341 case DRM_FORMAT_BGR233: 2342 case DRM_FORMAT_XRGB4444: 2343 case DRM_FORMAT_XBGR4444: 2344 case DRM_FORMAT_RGBX4444: 2345 case DRM_FORMAT_BGRX4444: 2346 case DRM_FORMAT_ARGB4444: 2347 case DRM_FORMAT_ABGR4444: 2348 case DRM_FORMAT_RGBA4444: 2349 case DRM_FORMAT_BGRA4444: 2350 case DRM_FORMAT_XRGB1555: 2351 case DRM_FORMAT_XBGR1555: 2352 case DRM_FORMAT_RGBX5551: 2353 case DRM_FORMAT_BGRX5551: 2354 case DRM_FORMAT_ARGB1555: 2355 case DRM_FORMAT_ABGR1555: 2356 case DRM_FORMAT_RGBA5551: 2357 case DRM_FORMAT_BGRA5551: 2358 case DRM_FORMAT_RGB565: 2359 case DRM_FORMAT_BGR565: 2360 case DRM_FORMAT_RGB888: 2361 case DRM_FORMAT_BGR888: 2362 case DRM_FORMAT_XRGB8888: 2363 case DRM_FORMAT_XBGR8888: 2364 case DRM_FORMAT_RGBX8888: 2365 case DRM_FORMAT_BGRX8888: 2366 case DRM_FORMAT_ARGB8888: 2367 case DRM_FORMAT_ABGR8888: 2368 case DRM_FORMAT_RGBA8888: 2369 case DRM_FORMAT_BGRA8888: 2370 case DRM_FORMAT_XRGB2101010: 2371 case DRM_FORMAT_XBGR2101010: 2372 case DRM_FORMAT_RGBX1010102: 2373 case DRM_FORMAT_BGRX1010102: 2374 case DRM_FORMAT_ARGB2101010: 2375 case DRM_FORMAT_ABGR2101010: 2376 case DRM_FORMAT_RGBA1010102: 2377 case DRM_FORMAT_BGRA1010102: 2378 case DRM_FORMAT_YUYV: 2379 case DRM_FORMAT_YVYU: 2380 case DRM_FORMAT_UYVY: 2381 case DRM_FORMAT_VYUY: 2382 case DRM_FORMAT_AYUV: 2383 case DRM_FORMAT_NV12: 2384 case DRM_FORMAT_NV21: 2385 case DRM_FORMAT_NV16: 2386 case DRM_FORMAT_NV61: 2387 case DRM_FORMAT_NV24: 2388 case DRM_FORMAT_NV42: 2389 case DRM_FORMAT_YUV410: 2390 case DRM_FORMAT_YVU410: 2391 case DRM_FORMAT_YUV411: 2392 case DRM_FORMAT_YVU411: 2393 case DRM_FORMAT_YUV420: 2394 case DRM_FORMAT_YVU420: 2395 case DRM_FORMAT_YUV422: 2396 case DRM_FORMAT_YVU422: 2397 case DRM_FORMAT_YUV444: 2398 case DRM_FORMAT_YVU444: 2399 return 0; 2400 default: 2401 return -EINVAL; 2402 } 2403} 2404 2405static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) 2406{ 2407 int ret, hsub, vsub, num_planes, i; 2408 2409 ret = format_check(r); 2410 if (ret) { 2411 DRM_DEBUG_KMS("bad framebuffer format %s\n", 2412 drm_get_format_name(r->pixel_format)); 2413 return ret; 2414 } 2415 2416 hsub = drm_format_horz_chroma_subsampling(r->pixel_format); 2417 vsub = drm_format_vert_chroma_subsampling(r->pixel_format); 2418 num_planes = drm_format_num_planes(r->pixel_format); 2419 2420 if (r->width == 0 || r->width % hsub) { 2421 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height); 2422 return -EINVAL; 2423 } 2424 2425 if (r->height == 0 || r->height % vsub) { 2426 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); 2427 return -EINVAL; 2428 } 2429 2430 for (i = 0; i < num_planes; i++) { 2431 unsigned int width = r->width / (i != 0 ? hsub : 1); 2432 unsigned int height = r->height / (i != 0 ? vsub : 1); 2433 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); 2434 2435 if (!r->handles[i]) { 2436 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); 2437 return -EINVAL; 2438 } 2439 2440 if ((uint64_t) width * cpp > UINT_MAX) 2441 return -ERANGE; 2442 2443 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) 2444 return -ERANGE; 2445 2446 if (r->pitches[i] < width * cpp) { 2447 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); 2448 return -EINVAL; 2449 } 2450 } 2451 2452 return 0; 2453} 2454 2455/** 2456 * drm_mode_addfb2 - add an FB to the graphics configuration 2457 * @dev: drm device for the ioctl 2458 * @data: data pointer for the ioctl 2459 * @file_priv: drm file for the ioctl call 2460 * 2461 * Add a new FB to the specified CRTC, given a user request with format. 2462 * 2463 * Called by the user via ioctl. 2464 * 2465 * RETURNS: 2466 * Zero on success, errno on failure. 2467 */ 2468int drm_mode_addfb2(struct drm_device *dev, 2469 void *data, struct drm_file *file_priv) 2470{ 2471 struct drm_mode_fb_cmd2 *r = data; 2472 struct drm_mode_config *config = &dev->mode_config; 2473 struct drm_framebuffer *fb; 2474 int ret; 2475 2476 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2477 return -EINVAL; 2478 2479 if (r->flags & ~DRM_MODE_FB_INTERLACED) { 2480 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); 2481 return -EINVAL; 2482 } 2483 2484 if ((config->min_width > r->width) || (r->width > config->max_width)) { 2485 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", 2486 r->width, config->min_width, config->max_width); 2487 return -EINVAL; 2488 } 2489 if ((config->min_height > r->height) || (r->height > config->max_height)) { 2490 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", 2491 r->height, config->min_height, config->max_height); 2492 return -EINVAL; 2493 } 2494 2495 ret = framebuffer_check(r); 2496 if (ret) 2497 return ret; 2498 2499 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 2500 if (IS_ERR(fb)) { 2501 DRM_DEBUG_KMS("could not create framebuffer\n"); 2502 return PTR_ERR(fb); 2503 } 2504 2505 mutex_lock(&file_priv->fbs_lock); 2506 r->fb_id = fb->base.id; 2507 list_add(&fb->filp_head, &file_priv->fbs); 2508 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2509 mutex_unlock(&file_priv->fbs_lock); 2510 2511 2512 return ret; 2513} 2514 2515/** 2516 * drm_mode_rmfb - remove an FB from the configuration 2517 * @dev: drm device for the ioctl 2518 * @data: data pointer for the ioctl 2519 * @file_priv: drm file for the ioctl call 2520 * 2521 * Remove the FB specified by the user. 2522 * 2523 * Called by the user via ioctl. 2524 * 2525 * RETURNS: 2526 * Zero on success, errno on failure. 2527 */ 2528int drm_mode_rmfb(struct drm_device *dev, 2529 void *data, struct drm_file *file_priv) 2530{ 2531 struct drm_framebuffer *fb = NULL; 2532 struct drm_framebuffer *fbl = NULL; 2533 uint32_t *id = data; 2534 int found = 0; 2535 2536 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2537 return -EINVAL; 2538 2539 mutex_lock(&file_priv->fbs_lock); 2540 mutex_lock(&dev->mode_config.fb_lock); 2541 fb = __drm_framebuffer_lookup(dev, *id); 2542 if (!fb) 2543 goto fail_lookup; 2544 2545 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 2546 if (fb == fbl) 2547 found = 1; 2548 if (!found) 2549 goto fail_lookup; 2550 2551 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2552 __drm_framebuffer_unregister(dev, fb); 2553 2554 list_del_init(&fb->filp_head); 2555 mutex_unlock(&dev->mode_config.fb_lock); 2556 mutex_unlock(&file_priv->fbs_lock); 2557 2558 drm_framebuffer_remove(fb); 2559 2560 return 0; 2561 2562fail_lookup: 2563 mutex_unlock(&dev->mode_config.fb_lock); 2564 mutex_unlock(&file_priv->fbs_lock); 2565 2566 return -EINVAL; 2567} 2568 2569/** 2570 * drm_mode_getfb - get FB info 2571 * @dev: drm device for the ioctl 2572 * @data: data pointer for the ioctl 2573 * @file_priv: drm file for the ioctl call 2574 * 2575 * Lookup the FB given its ID and return info about it. 2576 * 2577 * Called by the user via ioctl. 2578 * 2579 * RETURNS: 2580 * Zero on success, errno on failure. 2581 */ 2582int drm_mode_getfb(struct drm_device *dev, 2583 void *data, struct drm_file *file_priv) 2584{ 2585 struct drm_mode_fb_cmd *r = data; 2586 struct drm_framebuffer *fb; 2587 int ret; 2588 2589 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2590 return -EINVAL; 2591 2592 fb = drm_framebuffer_lookup(dev, r->fb_id); 2593 if (!fb) 2594 return -EINVAL; 2595 2596 r->height = fb->height; 2597 r->width = fb->width; 2598 r->depth = fb->depth; 2599 r->bpp = fb->bits_per_pixel; 2600 r->pitch = fb->pitches[0]; 2601 if (fb->funcs->create_handle) 2602 ret = fb->funcs->create_handle(fb, file_priv, &r->handle); 2603 else 2604 ret = -ENODEV; 2605 2606 drm_framebuffer_unreference(fb); 2607 2608 return ret; 2609} 2610 2611int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 2612 void *data, struct drm_file *file_priv) 2613{ 2614 struct drm_clip_rect __user *clips_ptr; 2615 struct drm_clip_rect *clips = NULL; 2616 struct drm_mode_fb_dirty_cmd *r = data; 2617 struct drm_framebuffer *fb; 2618 unsigned flags; 2619 int num_clips; 2620 int ret; 2621 2622 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2623 return -EINVAL; 2624 2625 fb = drm_framebuffer_lookup(dev, r->fb_id); 2626 if (!fb) 2627 return -EINVAL; 2628 2629 num_clips = r->num_clips; 2630 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; 2631 2632 if (!num_clips != !clips_ptr) { 2633 ret = -EINVAL; 2634 goto out_err1; 2635 } 2636 2637 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; 2638 2639 /* If userspace annotates copy, clips must come in pairs */ 2640 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { 2641 ret = -EINVAL; 2642 goto out_err1; 2643 } 2644 2645 if (num_clips && clips_ptr) { 2646 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { 2647 ret = -EINVAL; 2648 goto out_err1; 2649 } 2650 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 2651 if (!clips) { 2652 ret = -ENOMEM; 2653 goto out_err1; 2654 } 2655 2656 ret = copy_from_user(clips, clips_ptr, 2657 num_clips * sizeof(*clips)); 2658 if (ret) { 2659 ret = -EFAULT; 2660 goto out_err2; 2661 } 2662 } 2663 2664 if (fb->funcs->dirty) { 2665 drm_modeset_lock_all(dev); 2666 ret = fb->funcs->dirty(fb, file_priv, flags, r->color, 2667 clips, num_clips); 2668 drm_modeset_unlock_all(dev); 2669 } else { 2670 ret = -ENOSYS; 2671 } 2672 2673out_err2: 2674 kfree(clips); 2675out_err1: 2676 drm_framebuffer_unreference(fb); 2677 2678 return ret; 2679} 2680 2681 2682/** 2683 * drm_fb_release - remove and free the FBs on this file 2684 * @priv: drm file for the ioctl 2685 * 2686 * Destroy all the FBs associated with @filp. 2687 * 2688 * Called by the user via ioctl. 2689 * 2690 * RETURNS: 2691 * Zero on success, errno on failure. 2692 */ 2693void drm_fb_release(struct drm_file *priv) 2694{ 2695 struct drm_device *dev = priv->minor->dev; 2696 struct drm_framebuffer *fb, *tfb; 2697 2698 mutex_lock(&priv->fbs_lock); 2699 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 2700 2701 mutex_lock(&dev->mode_config.fb_lock); 2702 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2703 __drm_framebuffer_unregister(dev, fb); 2704 mutex_unlock(&dev->mode_config.fb_lock); 2705 2706 list_del_init(&fb->filp_head); 2707 2708 /* This will also drop the fpriv->fbs reference. */ 2709 drm_framebuffer_remove(fb); 2710 } 2711 mutex_unlock(&priv->fbs_lock); 2712} 2713 2714struct drm_property *drm_property_create(struct drm_device *dev, int flags, 2715 const char *name, int num_values) 2716{ 2717 struct drm_property *property = NULL; 2718 int ret; 2719 2720 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 2721 if (!property) 2722 return NULL; 2723 2724 if (num_values) { 2725 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 2726 if (!property->values) 2727 goto fail; 2728 } 2729 2730 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 2731 if (ret) 2732 goto fail; 2733 2734 property->flags = flags; 2735 property->num_values = num_values; 2736 INIT_LIST_HEAD(&property->enum_blob_list); 2737 2738 if (name) { 2739 strncpy(property->name, name, DRM_PROP_NAME_LEN); 2740 property->name[DRM_PROP_NAME_LEN-1] = '\0'; 2741 } 2742 2743 list_add_tail(&property->head, &dev->mode_config.property_list); 2744 return property; 2745fail: 2746 kfree(property->values); 2747 kfree(property); 2748 return NULL; 2749} 2750EXPORT_SYMBOL(drm_property_create); 2751 2752struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 2753 const char *name, 2754 const struct drm_prop_enum_list *props, 2755 int num_values) 2756{ 2757 struct drm_property *property; 2758 int i, ret; 2759 2760 flags |= DRM_MODE_PROP_ENUM; 2761 2762 property = drm_property_create(dev, flags, name, num_values); 2763 if (!property) 2764 return NULL; 2765 2766 for (i = 0; i < num_values; i++) { 2767 ret = drm_property_add_enum(property, i, 2768 props[i].type, 2769 props[i].name); 2770 if (ret) { 2771 drm_property_destroy(dev, property); 2772 return NULL; 2773 } 2774 } 2775 2776 return property; 2777} 2778EXPORT_SYMBOL(drm_property_create_enum); 2779 2780struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 2781 int flags, const char *name, 2782 const struct drm_prop_enum_list *props, 2783 int num_values) 2784{ 2785 struct drm_property *property; 2786 int i, ret; 2787 2788 flags |= DRM_MODE_PROP_BITMASK; 2789 2790 property = drm_property_create(dev, flags, name, num_values); 2791 if (!property) 2792 return NULL; 2793 2794 for (i = 0; i < num_values; i++) { 2795 ret = drm_property_add_enum(property, i, 2796 props[i].type, 2797 props[i].name); 2798 if (ret) { 2799 drm_property_destroy(dev, property); 2800 return NULL; 2801 } 2802 } 2803 2804 return property; 2805} 2806EXPORT_SYMBOL(drm_property_create_bitmask); 2807 2808struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 2809 const char *name, 2810 uint64_t min, uint64_t max) 2811{ 2812 struct drm_property *property; 2813 2814 flags |= DRM_MODE_PROP_RANGE; 2815 2816 property = drm_property_create(dev, flags, name, 2); 2817 if (!property) 2818 return NULL; 2819 2820 property->values[0] = min; 2821 property->values[1] = max; 2822 2823 return property; 2824} 2825EXPORT_SYMBOL(drm_property_create_range); 2826 2827int drm_property_add_enum(struct drm_property *property, int index, 2828 uint64_t value, const char *name) 2829{ 2830 struct drm_property_enum *prop_enum; 2831 2832 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) 2833 return -EINVAL; 2834 2835 /* 2836 * Bitmask enum properties have the additional constraint of values 2837 * from 0 to 63 2838 */ 2839 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) 2840 return -EINVAL; 2841 2842 if (!list_empty(&property->enum_blob_list)) { 2843 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2844 if (prop_enum->value == value) { 2845 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2846 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2847 return 0; 2848 } 2849 } 2850 } 2851 2852 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 2853 if (!prop_enum) 2854 return -ENOMEM; 2855 2856 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2857 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2858 prop_enum->value = value; 2859 2860 property->values[index] = value; 2861 list_add_tail(&prop_enum->head, &property->enum_blob_list); 2862 return 0; 2863} 2864EXPORT_SYMBOL(drm_property_add_enum); 2865 2866void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 2867{ 2868 struct drm_property_enum *prop_enum, *pt; 2869 2870 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 2871 list_del(&prop_enum->head); 2872 kfree(prop_enum); 2873 } 2874 2875 if (property->num_values) 2876 kfree(property->values); 2877 drm_mode_object_put(dev, &property->base); 2878 list_del(&property->head); 2879 kfree(property); 2880} 2881EXPORT_SYMBOL(drm_property_destroy); 2882 2883void drm_object_attach_property(struct drm_mode_object *obj, 2884 struct drm_property *property, 2885 uint64_t init_val) 2886{ 2887 int count = obj->properties->count; 2888 2889 if (count == DRM_OBJECT_MAX_PROPERTY) { 2890 WARN(1, "Failed to attach object property (type: 0x%x). Please " 2891 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " 2892 "you see this message on the same object type.\n", 2893 obj->type); 2894 return; 2895 } 2896 2897 obj->properties->ids[count] = property->base.id; 2898 obj->properties->values[count] = init_val; 2899 obj->properties->count++; 2900} 2901EXPORT_SYMBOL(drm_object_attach_property); 2902 2903int drm_object_property_set_value(struct drm_mode_object *obj, 2904 struct drm_property *property, uint64_t val) 2905{ 2906 int i; 2907 2908 for (i = 0; i < obj->properties->count; i++) { 2909 if (obj->properties->ids[i] == property->base.id) { 2910 obj->properties->values[i] = val; 2911 return 0; 2912 } 2913 } 2914 2915 return -EINVAL; 2916} 2917EXPORT_SYMBOL(drm_object_property_set_value); 2918 2919int drm_object_property_get_value(struct drm_mode_object *obj, 2920 struct drm_property *property, uint64_t *val) 2921{ 2922 int i; 2923 2924 for (i = 0; i < obj->properties->count; i++) { 2925 if (obj->properties->ids[i] == property->base.id) { 2926 *val = obj->properties->values[i]; 2927 return 0; 2928 } 2929 } 2930 2931 return -EINVAL; 2932} 2933EXPORT_SYMBOL(drm_object_property_get_value); 2934 2935int drm_mode_getproperty_ioctl(struct drm_device *dev, 2936 void *data, struct drm_file *file_priv) 2937{ 2938 struct drm_mode_object *obj; 2939 struct drm_mode_get_property *out_resp = data; 2940 struct drm_property *property; 2941 int enum_count = 0; 2942 int blob_count = 0; 2943 int value_count = 0; 2944 int ret = 0, i; 2945 int copied; 2946 struct drm_property_enum *prop_enum; 2947 struct drm_mode_property_enum __user *enum_ptr; 2948 struct drm_property_blob *prop_blob; 2949 uint32_t __user *blob_id_ptr; 2950 uint64_t __user *values_ptr; 2951 uint32_t __user *blob_length_ptr; 2952 2953 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2954 return -EINVAL; 2955 2956 drm_modeset_lock_all(dev); 2957 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 2958 if (!obj) { 2959 ret = -EINVAL; 2960 goto done; 2961 } 2962 property = obj_to_property(obj); 2963 2964 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 2965 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 2966 enum_count++; 2967 } else if (property->flags & DRM_MODE_PROP_BLOB) { 2968 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 2969 blob_count++; 2970 } 2971 2972 value_count = property->num_values; 2973 2974 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 2975 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 2976 out_resp->flags = property->flags; 2977 2978 if ((out_resp->count_values >= value_count) && value_count) { 2979 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; 2980 for (i = 0; i < value_count; i++) { 2981 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 2982 ret = -EFAULT; 2983 goto done; 2984 } 2985 } 2986 } 2987 out_resp->count_values = value_count; 2988 2989 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 2990 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 2991 copied = 0; 2992 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; 2993 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2994 2995 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 2996 ret = -EFAULT; 2997 goto done; 2998 } 2999 3000 if (copy_to_user(&enum_ptr[copied].name, 3001 &prop_enum->name, DRM_PROP_NAME_LEN)) { 3002 ret = -EFAULT; 3003 goto done; 3004 } 3005 copied++; 3006 } 3007 } 3008 out_resp->count_enum_blobs = enum_count; 3009 } 3010 3011 if (property->flags & DRM_MODE_PROP_BLOB) { 3012 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 3013 copied = 0; 3014 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; 3015 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; 3016 3017 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 3018 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 3019 ret = -EFAULT; 3020 goto done; 3021 } 3022 3023 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 3024 ret = -EFAULT; 3025 goto done; 3026 } 3027 3028 copied++; 3029 } 3030 } 3031 out_resp->count_enum_blobs = blob_count; 3032 } 3033done: 3034 drm_modeset_unlock_all(dev); 3035 return ret; 3036} 3037 3038static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 3039 void *data) 3040{ 3041 struct drm_property_blob *blob; 3042 int ret; 3043 3044 if (!length || !data) 3045 return NULL; 3046 3047 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 3048 if (!blob) 3049 return NULL; 3050 3051 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 3052 if (ret) { 3053 kfree(blob); 3054 return NULL; 3055 } 3056 3057 blob->length = length; 3058 3059 memcpy(blob->data, data, length); 3060 3061 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 3062 return blob; 3063} 3064 3065static void drm_property_destroy_blob(struct drm_device *dev, 3066 struct drm_property_blob *blob) 3067{ 3068 drm_mode_object_put(dev, &blob->base); 3069 list_del(&blob->head); 3070 kfree(blob); 3071} 3072 3073int drm_mode_getblob_ioctl(struct drm_device *dev, 3074 void *data, struct drm_file *file_priv) 3075{ 3076 struct drm_mode_object *obj; 3077 struct drm_mode_get_blob *out_resp = data; 3078 struct drm_property_blob *blob; 3079 int ret = 0; 3080 void __user *blob_ptr; 3081 3082 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3083 return -EINVAL; 3084 3085 drm_modeset_lock_all(dev); 3086 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 3087 if (!obj) { 3088 ret = -EINVAL; 3089 goto done; 3090 } 3091 blob = obj_to_blob(obj); 3092 3093 if (out_resp->length == blob->length) { 3094 blob_ptr = (void __user *)(unsigned long)out_resp->data; 3095 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 3096 ret = -EFAULT; 3097 goto done; 3098 } 3099 } 3100 out_resp->length = blob->length; 3101 3102done: 3103 drm_modeset_unlock_all(dev); 3104 return ret; 3105} 3106 3107int drm_mode_connector_update_edid_property(struct drm_connector *connector, 3108 struct edid *edid) 3109{ 3110 struct drm_device *dev = connector->dev; 3111 int ret, size; 3112 3113 if (connector->edid_blob_ptr) 3114 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 3115 3116 /* Delete edid, when there is none. */ 3117 if (!edid) { 3118 connector->edid_blob_ptr = NULL; 3119 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); 3120 return ret; 3121 } 3122 3123 size = EDID_LENGTH * (1 + edid->extensions); 3124 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 3125 size, edid); 3126 if (!connector->edid_blob_ptr) 3127 return -EINVAL; 3128 3129 ret = drm_object_property_set_value(&connector->base, 3130 dev->mode_config.edid_property, 3131 connector->edid_blob_ptr->base.id); 3132 3133 return ret; 3134} 3135EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 3136 3137static bool drm_property_change_is_valid(struct drm_property *property, 3138 uint64_t value) 3139{ 3140 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 3141 return false; 3142 if (property->flags & DRM_MODE_PROP_RANGE) { 3143 if (value < property->values[0] || value > property->values[1]) 3144 return false; 3145 return true; 3146 } else if (property->flags & DRM_MODE_PROP_BITMASK) { 3147 int i; 3148 uint64_t valid_mask = 0; 3149 for (i = 0; i < property->num_values; i++) 3150 valid_mask |= (1ULL << property->values[i]); 3151 return !(value & ~valid_mask); 3152 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3153 /* Only the driver knows */ 3154 return true; 3155 } else { 3156 int i; 3157 for (i = 0; i < property->num_values; i++) 3158 if (property->values[i] == value) 3159 return true; 3160 return false; 3161 } 3162} 3163 3164int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 3165 void *data, struct drm_file *file_priv) 3166{ 3167 struct drm_mode_connector_set_property *conn_set_prop = data; 3168 struct drm_mode_obj_set_property obj_set_prop = { 3169 .value = conn_set_prop->value, 3170 .prop_id = conn_set_prop->prop_id, 3171 .obj_id = conn_set_prop->connector_id, 3172 .obj_type = DRM_MODE_OBJECT_CONNECTOR 3173 }; 3174 3175 /* It does all the locking and checking we need */ 3176 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); 3177} 3178 3179static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, 3180 struct drm_property *property, 3181 uint64_t value) 3182{ 3183 int ret = -EINVAL; 3184 struct drm_connector *connector = obj_to_connector(obj); 3185 3186 /* Do DPMS ourselves */ 3187 if (property == connector->dev->mode_config.dpms_property) { 3188 if (connector->funcs->dpms) 3189 (*connector->funcs->dpms)(connector, (int)value); 3190 ret = 0; 3191 } else if (connector->funcs->set_property) 3192 ret = connector->funcs->set_property(connector, property, value); 3193 3194 /* store the property value if successful */ 3195 if (!ret) 3196 drm_object_property_set_value(&connector->base, property, value); 3197 return ret; 3198} 3199 3200static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 3201 struct drm_property *property, 3202 uint64_t value) 3203{ 3204 int ret = -EINVAL; 3205 struct drm_crtc *crtc = obj_to_crtc(obj); 3206 3207 if (crtc->funcs->set_property) 3208 ret = crtc->funcs->set_property(crtc, property, value); 3209 if (!ret) 3210 drm_object_property_set_value(obj, property, value); 3211 3212 return ret; 3213} 3214 3215static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, 3216 struct drm_property *property, 3217 uint64_t value) 3218{ 3219 int ret = -EINVAL; 3220 struct drm_plane *plane = obj_to_plane(obj); 3221 3222 if (plane->funcs->set_property) 3223 ret = plane->funcs->set_property(plane, property, value); 3224 if (!ret) 3225 drm_object_property_set_value(obj, property, value); 3226 3227 return ret; 3228} 3229 3230int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 3231 struct drm_file *file_priv) 3232{ 3233 struct drm_mode_obj_get_properties *arg = data; 3234 struct drm_mode_object *obj; 3235 int ret = 0; 3236 int i; 3237 int copied = 0; 3238 int props_count = 0; 3239 uint32_t __user *props_ptr; 3240 uint64_t __user *prop_values_ptr; 3241 3242 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3243 return -EINVAL; 3244 3245 drm_modeset_lock_all(dev); 3246 3247 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3248 if (!obj) { 3249 ret = -EINVAL; 3250 goto out; 3251 } 3252 if (!obj->properties) { 3253 ret = -EINVAL; 3254 goto out; 3255 } 3256 3257 props_count = obj->properties->count; 3258 3259 /* This ioctl is called twice, once to determine how much space is 3260 * needed, and the 2nd time to fill it. */ 3261 if ((arg->count_props >= props_count) && props_count) { 3262 copied = 0; 3263 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 3264 prop_values_ptr = (uint64_t __user *)(unsigned long) 3265 (arg->prop_values_ptr); 3266 for (i = 0; i < props_count; i++) { 3267 if (put_user(obj->properties->ids[i], 3268 props_ptr + copied)) { 3269 ret = -EFAULT; 3270 goto out; 3271 } 3272 if (put_user(obj->properties->values[i], 3273 prop_values_ptr + copied)) { 3274 ret = -EFAULT; 3275 goto out; 3276 } 3277 copied++; 3278 } 3279 } 3280 arg->count_props = props_count; 3281out: 3282 drm_modeset_unlock_all(dev); 3283 return ret; 3284} 3285 3286int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 3287 struct drm_file *file_priv) 3288{ 3289 struct drm_mode_obj_set_property *arg = data; 3290 struct drm_mode_object *arg_obj; 3291 struct drm_mode_object *prop_obj; 3292 struct drm_property *property; 3293 int ret = -EINVAL; 3294 int i; 3295 3296 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3297 return -EINVAL; 3298 3299 drm_modeset_lock_all(dev); 3300 3301 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3302 if (!arg_obj) 3303 goto out; 3304 if (!arg_obj->properties) 3305 goto out; 3306 3307 for (i = 0; i < arg_obj->properties->count; i++) 3308 if (arg_obj->properties->ids[i] == arg->prop_id) 3309 break; 3310 3311 if (i == arg_obj->properties->count) 3312 goto out; 3313 3314 prop_obj = drm_mode_object_find(dev, arg->prop_id, 3315 DRM_MODE_OBJECT_PROPERTY); 3316 if (!prop_obj) 3317 goto out; 3318 property = obj_to_property(prop_obj); 3319 3320 if (!drm_property_change_is_valid(property, arg->value)) 3321 goto out; 3322 3323 switch (arg_obj->type) { 3324 case DRM_MODE_OBJECT_CONNECTOR: 3325 ret = drm_mode_connector_set_obj_prop(arg_obj, property, 3326 arg->value); 3327 break; 3328 case DRM_MODE_OBJECT_CRTC: 3329 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); 3330 break; 3331 case DRM_MODE_OBJECT_PLANE: 3332 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); 3333 break; 3334 } 3335 3336out: 3337 drm_modeset_unlock_all(dev); 3338 return ret; 3339} 3340 3341int drm_mode_connector_attach_encoder(struct drm_connector *connector, 3342 struct drm_encoder *encoder) 3343{ 3344 int i; 3345 3346 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3347 if (connector->encoder_ids[i] == 0) { 3348 connector->encoder_ids[i] = encoder->base.id; 3349 return 0; 3350 } 3351 } 3352 return -ENOMEM; 3353} 3354EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 3355 3356void drm_mode_connector_detach_encoder(struct drm_connector *connector, 3357 struct drm_encoder *encoder) 3358{ 3359 int i; 3360 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3361 if (connector->encoder_ids[i] == encoder->base.id) { 3362 connector->encoder_ids[i] = 0; 3363 if (connector->encoder == encoder) 3364 connector->encoder = NULL; 3365 break; 3366 } 3367 } 3368} 3369EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 3370 3371int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 3372 int gamma_size) 3373{ 3374 crtc->gamma_size = gamma_size; 3375 3376 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 3377 if (!crtc->gamma_store) { 3378 crtc->gamma_size = 0; 3379 return -ENOMEM; 3380 } 3381 3382 return 0; 3383} 3384EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 3385 3386int drm_mode_gamma_set_ioctl(struct drm_device *dev, 3387 void *data, struct drm_file *file_priv) 3388{ 3389 struct drm_mode_crtc_lut *crtc_lut = data; 3390 struct drm_mode_object *obj; 3391 struct drm_crtc *crtc; 3392 void *r_base, *g_base, *b_base; 3393 int size; 3394 int ret = 0; 3395 3396 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3397 return -EINVAL; 3398 3399 drm_modeset_lock_all(dev); 3400 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3401 if (!obj) { 3402 ret = -EINVAL; 3403 goto out; 3404 } 3405 crtc = obj_to_crtc(obj); 3406 3407 if (crtc->funcs->gamma_set == NULL) { 3408 ret = -ENOSYS; 3409 goto out; 3410 } 3411 3412 /* memcpy into gamma store */ 3413 if (crtc_lut->gamma_size != crtc->gamma_size) { 3414 ret = -EINVAL; 3415 goto out; 3416 } 3417 3418 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3419 r_base = crtc->gamma_store; 3420 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 3421 ret = -EFAULT; 3422 goto out; 3423 } 3424 3425 g_base = r_base + size; 3426 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 3427 ret = -EFAULT; 3428 goto out; 3429 } 3430 3431 b_base = g_base + size; 3432 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 3433 ret = -EFAULT; 3434 goto out; 3435 } 3436 3437 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 3438 3439out: 3440 drm_modeset_unlock_all(dev); 3441 return ret; 3442 3443} 3444 3445int drm_mode_gamma_get_ioctl(struct drm_device *dev, 3446 void *data, struct drm_file *file_priv) 3447{ 3448 struct drm_mode_crtc_lut *crtc_lut = data; 3449 struct drm_mode_object *obj; 3450 struct drm_crtc *crtc; 3451 void *r_base, *g_base, *b_base; 3452 int size; 3453 int ret = 0; 3454 3455 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3456 return -EINVAL; 3457 3458 drm_modeset_lock_all(dev); 3459 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3460 if (!obj) { 3461 ret = -EINVAL; 3462 goto out; 3463 } 3464 crtc = obj_to_crtc(obj); 3465 3466 /* memcpy into gamma store */ 3467 if (crtc_lut->gamma_size != crtc->gamma_size) { 3468 ret = -EINVAL; 3469 goto out; 3470 } 3471 3472 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3473 r_base = crtc->gamma_store; 3474 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 3475 ret = -EFAULT; 3476 goto out; 3477 } 3478 3479 g_base = r_base + size; 3480 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 3481 ret = -EFAULT; 3482 goto out; 3483 } 3484 3485 b_base = g_base + size; 3486 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 3487 ret = -EFAULT; 3488 goto out; 3489 } 3490out: 3491 drm_modeset_unlock_all(dev); 3492 return ret; 3493} 3494 3495int drm_mode_page_flip_ioctl(struct drm_device *dev, 3496 void *data, struct drm_file *file_priv) 3497{ 3498 struct drm_mode_crtc_page_flip *page_flip = data; 3499 struct drm_mode_object *obj; 3500 struct drm_crtc *crtc; 3501 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 3502 struct drm_pending_vblank_event *e = NULL; 3503 unsigned long flags; 3504 int hdisplay, vdisplay; 3505 int ret = -EINVAL; 3506 3507 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || 3508 page_flip->reserved != 0) 3509 return -EINVAL; 3510 3511 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); 3512 if (!obj) 3513 return -EINVAL; 3514 crtc = obj_to_crtc(obj); 3515 3516 mutex_lock(&crtc->mutex); 3517 if (crtc->fb == NULL) { 3518 /* The framebuffer is currently unbound, presumably 3519 * due to a hotplug event, that userspace has not 3520 * yet discovered. 3521 */ 3522 ret = -EBUSY; 3523 goto out; 3524 } 3525 3526 if (crtc->funcs->page_flip == NULL) 3527 goto out; 3528 3529 fb = drm_framebuffer_lookup(dev, page_flip->fb_id); 3530 if (!fb) 3531 goto out; 3532 3533 hdisplay = crtc->mode.hdisplay; 3534 vdisplay = crtc->mode.vdisplay; 3535 3536 if (crtc->invert_dimensions) 3537 swap(hdisplay, vdisplay); 3538 3539 if (hdisplay > fb->width || 3540 vdisplay > fb->height || 3541 crtc->x > fb->width - hdisplay || 3542 crtc->y > fb->height - vdisplay) { 3543 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 3544 fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y, 3545 crtc->invert_dimensions ? " (inverted)" : ""); 3546 ret = -ENOSPC; 3547 goto out; 3548 } 3549 3550 if (crtc->fb->pixel_format != fb->pixel_format) { 3551 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); 3552 ret = -EINVAL; 3553 goto out; 3554 } 3555 3556 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3557 ret = -ENOMEM; 3558 spin_lock_irqsave(&dev->event_lock, flags); 3559 if (file_priv->event_space < sizeof e->event) { 3560 spin_unlock_irqrestore(&dev->event_lock, flags); 3561 goto out; 3562 } 3563 file_priv->event_space -= sizeof e->event; 3564 spin_unlock_irqrestore(&dev->event_lock, flags); 3565 3566 e = kzalloc(sizeof *e, GFP_KERNEL); 3567 if (e == NULL) { 3568 spin_lock_irqsave(&dev->event_lock, flags); 3569 file_priv->event_space += sizeof e->event; 3570 spin_unlock_irqrestore(&dev->event_lock, flags); 3571 goto out; 3572 } 3573 3574 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 3575 e->event.base.length = sizeof e->event; 3576 e->event.user_data = page_flip->user_data; 3577 e->base.event = &e->event.base; 3578 e->base.file_priv = file_priv; 3579 e->base.destroy = 3580 (void (*) (struct drm_pending_event *)) kfree; 3581 } 3582 3583 old_fb = crtc->fb; 3584 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); 3585 if (ret) { 3586 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3587 spin_lock_irqsave(&dev->event_lock, flags); 3588 file_priv->event_space += sizeof e->event; 3589 spin_unlock_irqrestore(&dev->event_lock, flags); 3590 kfree(e); 3591 } 3592 /* Keep the old fb, don't unref it. */ 3593 old_fb = NULL; 3594 } else { 3595 /* 3596 * Warn if the driver hasn't properly updated the crtc->fb 3597 * field to reflect that the new framebuffer is now used. 3598 * Failing to do so will screw with the reference counting 3599 * on framebuffers. 3600 */ 3601 WARN_ON(crtc->fb != fb); 3602 /* Unref only the old framebuffer. */ 3603 fb = NULL; 3604 } 3605 3606out: 3607 if (fb) 3608 drm_framebuffer_unreference(fb); 3609 if (old_fb) 3610 drm_framebuffer_unreference(old_fb); 3611 mutex_unlock(&crtc->mutex); 3612 3613 return ret; 3614} 3615 3616void drm_mode_config_reset(struct drm_device *dev) 3617{ 3618 struct drm_crtc *crtc; 3619 struct drm_encoder *encoder; 3620 struct drm_connector *connector; 3621 3622 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 3623 if (crtc->funcs->reset) 3624 crtc->funcs->reset(crtc); 3625 3626 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 3627 if (encoder->funcs->reset) 3628 encoder->funcs->reset(encoder); 3629 3630 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 3631 connector->status = connector_status_unknown; 3632 3633 if (connector->funcs->reset) 3634 connector->funcs->reset(connector); 3635 } 3636} 3637EXPORT_SYMBOL(drm_mode_config_reset); 3638 3639int drm_mode_create_dumb_ioctl(struct drm_device *dev, 3640 void *data, struct drm_file *file_priv) 3641{ 3642 struct drm_mode_create_dumb *args = data; 3643 3644 if (!dev->driver->dumb_create) 3645 return -ENOSYS; 3646 return dev->driver->dumb_create(file_priv, dev, args); 3647} 3648 3649int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 3650 void *data, struct drm_file *file_priv) 3651{ 3652 struct drm_mode_map_dumb *args = data; 3653 3654 /* call driver ioctl to get mmap offset */ 3655 if (!dev->driver->dumb_map_offset) 3656 return -ENOSYS; 3657 3658 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); 3659} 3660 3661int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 3662 void *data, struct drm_file *file_priv) 3663{ 3664 struct drm_mode_destroy_dumb *args = data; 3665 3666 if (!dev->driver->dumb_destroy) 3667 return -ENOSYS; 3668 3669 return dev->driver->dumb_destroy(file_priv, dev, args->handle); 3670} 3671 3672/* 3673 * Just need to support RGB formats here for compat with code that doesn't 3674 * use pixel formats directly yet. 3675 */ 3676void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 3677 int *bpp) 3678{ 3679 switch (format) { 3680 case DRM_FORMAT_C8: 3681 case DRM_FORMAT_RGB332: 3682 case DRM_FORMAT_BGR233: 3683 *depth = 8; 3684 *bpp = 8; 3685 break; 3686 case DRM_FORMAT_XRGB1555: 3687 case DRM_FORMAT_XBGR1555: 3688 case DRM_FORMAT_RGBX5551: 3689 case DRM_FORMAT_BGRX5551: 3690 case DRM_FORMAT_ARGB1555: 3691 case DRM_FORMAT_ABGR1555: 3692 case DRM_FORMAT_RGBA5551: 3693 case DRM_FORMAT_BGRA5551: 3694 *depth = 15; 3695 *bpp = 16; 3696 break; 3697 case DRM_FORMAT_RGB565: 3698 case DRM_FORMAT_BGR565: 3699 *depth = 16; 3700 *bpp = 16; 3701 break; 3702 case DRM_FORMAT_RGB888: 3703 case DRM_FORMAT_BGR888: 3704 *depth = 24; 3705 *bpp = 24; 3706 break; 3707 case DRM_FORMAT_XRGB8888: 3708 case DRM_FORMAT_XBGR8888: 3709 case DRM_FORMAT_RGBX8888: 3710 case DRM_FORMAT_BGRX8888: 3711 *depth = 24; 3712 *bpp = 32; 3713 break; 3714 case DRM_FORMAT_XRGB2101010: 3715 case DRM_FORMAT_XBGR2101010: 3716 case DRM_FORMAT_RGBX1010102: 3717 case DRM_FORMAT_BGRX1010102: 3718 case DRM_FORMAT_ARGB2101010: 3719 case DRM_FORMAT_ABGR2101010: 3720 case DRM_FORMAT_RGBA1010102: 3721 case DRM_FORMAT_BGRA1010102: 3722 *depth = 30; 3723 *bpp = 32; 3724 break; 3725 case DRM_FORMAT_ARGB8888: 3726 case DRM_FORMAT_ABGR8888: 3727 case DRM_FORMAT_RGBA8888: 3728 case DRM_FORMAT_BGRA8888: 3729 *depth = 32; 3730 *bpp = 32; 3731 break; 3732 default: 3733 DRM_DEBUG_KMS("unsupported pixel format\n"); 3734 *depth = 0; 3735 *bpp = 0; 3736 break; 3737 } 3738} 3739EXPORT_SYMBOL(drm_fb_get_bpp_depth); 3740 3741/** 3742 * drm_format_num_planes - get the number of planes for format 3743 * @format: pixel format (DRM_FORMAT_*) 3744 * 3745 * RETURNS: 3746 * The number of planes used by the specified pixel format. 3747 */ 3748int drm_format_num_planes(uint32_t format) 3749{ 3750 switch (format) { 3751 case DRM_FORMAT_YUV410: 3752 case DRM_FORMAT_YVU410: 3753 case DRM_FORMAT_YUV411: 3754 case DRM_FORMAT_YVU411: 3755 case DRM_FORMAT_YUV420: 3756 case DRM_FORMAT_YVU420: 3757 case DRM_FORMAT_YUV422: 3758 case DRM_FORMAT_YVU422: 3759 case DRM_FORMAT_YUV444: 3760 case DRM_FORMAT_YVU444: 3761 return 3; 3762 case DRM_FORMAT_NV12: 3763 case DRM_FORMAT_NV21: 3764 case DRM_FORMAT_NV16: 3765 case DRM_FORMAT_NV61: 3766 case DRM_FORMAT_NV24: 3767 case DRM_FORMAT_NV42: 3768 return 2; 3769 default: 3770 return 1; 3771 } 3772} 3773EXPORT_SYMBOL(drm_format_num_planes); 3774 3775/** 3776 * drm_format_plane_cpp - determine the bytes per pixel value 3777 * @format: pixel format (DRM_FORMAT_*) 3778 * @plane: plane index 3779 * 3780 * RETURNS: 3781 * The bytes per pixel value for the specified plane. 3782 */ 3783int drm_format_plane_cpp(uint32_t format, int plane) 3784{ 3785 unsigned int depth; 3786 int bpp; 3787 3788 if (plane >= drm_format_num_planes(format)) 3789 return 0; 3790 3791 switch (format) { 3792 case DRM_FORMAT_YUYV: 3793 case DRM_FORMAT_YVYU: 3794 case DRM_FORMAT_UYVY: 3795 case DRM_FORMAT_VYUY: 3796 return 2; 3797 case DRM_FORMAT_NV12: 3798 case DRM_FORMAT_NV21: 3799 case DRM_FORMAT_NV16: 3800 case DRM_FORMAT_NV61: 3801 case DRM_FORMAT_NV24: 3802 case DRM_FORMAT_NV42: 3803 return plane ? 2 : 1; 3804 case DRM_FORMAT_YUV410: 3805 case DRM_FORMAT_YVU410: 3806 case DRM_FORMAT_YUV411: 3807 case DRM_FORMAT_YVU411: 3808 case DRM_FORMAT_YUV420: 3809 case DRM_FORMAT_YVU420: 3810 case DRM_FORMAT_YUV422: 3811 case DRM_FORMAT_YVU422: 3812 case DRM_FORMAT_YUV444: 3813 case DRM_FORMAT_YVU444: 3814 return 1; 3815 default: 3816 drm_fb_get_bpp_depth(format, &depth, &bpp); 3817 return bpp >> 3; 3818 } 3819} 3820EXPORT_SYMBOL(drm_format_plane_cpp); 3821 3822/** 3823 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor 3824 * @format: pixel format (DRM_FORMAT_*) 3825 * 3826 * RETURNS: 3827 * The horizontal chroma subsampling factor for the 3828 * specified pixel format. 3829 */ 3830int drm_format_horz_chroma_subsampling(uint32_t format) 3831{ 3832 switch (format) { 3833 case DRM_FORMAT_YUV411: 3834 case DRM_FORMAT_YVU411: 3835 case DRM_FORMAT_YUV410: 3836 case DRM_FORMAT_YVU410: 3837 return 4; 3838 case DRM_FORMAT_YUYV: 3839 case DRM_FORMAT_YVYU: 3840 case DRM_FORMAT_UYVY: 3841 case DRM_FORMAT_VYUY: 3842 case DRM_FORMAT_NV12: 3843 case DRM_FORMAT_NV21: 3844 case DRM_FORMAT_NV16: 3845 case DRM_FORMAT_NV61: 3846 case DRM_FORMAT_YUV422: 3847 case DRM_FORMAT_YVU422: 3848 case DRM_FORMAT_YUV420: 3849 case DRM_FORMAT_YVU420: 3850 return 2; 3851 default: 3852 return 1; 3853 } 3854} 3855EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); 3856 3857/** 3858 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor 3859 * @format: pixel format (DRM_FORMAT_*) 3860 * 3861 * RETURNS: 3862 * The vertical chroma subsampling factor for the 3863 * specified pixel format. 3864 */ 3865int drm_format_vert_chroma_subsampling(uint32_t format) 3866{ 3867 switch (format) { 3868 case DRM_FORMAT_YUV410: 3869 case DRM_FORMAT_YVU410: 3870 return 4; 3871 case DRM_FORMAT_YUV420: 3872 case DRM_FORMAT_YVU420: 3873 case DRM_FORMAT_NV12: 3874 case DRM_FORMAT_NV21: 3875 return 2; 3876 default: 3877 return 1; 3878 } 3879} 3880EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); 3881 3882/** 3883 * drm_mode_config_init - initialize DRM mode_configuration structure 3884 * @dev: DRM device 3885 * 3886 * Initialize @dev's mode_config structure, used for tracking the graphics 3887 * configuration of @dev. 3888 * 3889 * Since this initializes the modeset locks, no locking is possible. Which is no 3890 * problem, since this should happen single threaded at init time. It is the 3891 * driver's problem to ensure this guarantee. 3892 * 3893 */ 3894void drm_mode_config_init(struct drm_device *dev) 3895{ 3896 mutex_init(&dev->mode_config.mutex); 3897 mutex_init(&dev->mode_config.idr_mutex); 3898 mutex_init(&dev->mode_config.fb_lock); 3899 INIT_LIST_HEAD(&dev->mode_config.fb_list); 3900 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 3901 INIT_LIST_HEAD(&dev->mode_config.connector_list); 3902 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 3903 INIT_LIST_HEAD(&dev->mode_config.property_list); 3904 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 3905 INIT_LIST_HEAD(&dev->mode_config.plane_list); 3906 idr_init(&dev->mode_config.crtc_idr); 3907 3908 drm_modeset_lock_all(dev); 3909 drm_mode_create_standard_connector_properties(dev); 3910 drm_modeset_unlock_all(dev); 3911 3912 /* Just to be sure */ 3913 dev->mode_config.num_fb = 0; 3914 dev->mode_config.num_connector = 0; 3915 dev->mode_config.num_crtc = 0; 3916 dev->mode_config.num_encoder = 0; 3917} 3918EXPORT_SYMBOL(drm_mode_config_init); 3919 3920/** 3921 * drm_mode_config_cleanup - free up DRM mode_config info 3922 * @dev: DRM device 3923 * 3924 * Free up all the connectors and CRTCs associated with this DRM device, then 3925 * free up the framebuffers and associated buffer objects. 3926 * 3927 * Note that since this /should/ happen single-threaded at driver/device 3928 * teardown time, no locking is required. It's the driver's job to ensure that 3929 * this guarantee actually holds true. 3930 * 3931 * FIXME: cleanup any dangling user buffer objects too 3932 */ 3933void drm_mode_config_cleanup(struct drm_device *dev) 3934{ 3935 struct drm_connector *connector, *ot; 3936 struct drm_crtc *crtc, *ct; 3937 struct drm_encoder *encoder, *enct; 3938 struct drm_framebuffer *fb, *fbt; 3939 struct drm_property *property, *pt; 3940 struct drm_property_blob *blob, *bt; 3941 struct drm_plane *plane, *plt; 3942 3943 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 3944 head) { 3945 encoder->funcs->destroy(encoder); 3946 } 3947 3948 list_for_each_entry_safe(connector, ot, 3949 &dev->mode_config.connector_list, head) { 3950 connector->funcs->destroy(connector); 3951 } 3952 3953 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 3954 head) { 3955 drm_property_destroy(dev, property); 3956 } 3957 3958 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, 3959 head) { 3960 drm_property_destroy_blob(dev, blob); 3961 } 3962 3963 /* 3964 * Single-threaded teardown context, so it's not required to grab the 3965 * fb_lock to protect against concurrent fb_list access. Contrary, it 3966 * would actually deadlock with the drm_framebuffer_cleanup function. 3967 * 3968 * Also, if there are any framebuffers left, that's a driver leak now, 3969 * so politely WARN about this. 3970 */ 3971 WARN_ON(!list_empty(&dev->mode_config.fb_list)); 3972 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 3973 drm_framebuffer_remove(fb); 3974 } 3975 3976 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 3977 head) { 3978 plane->funcs->destroy(plane); 3979 } 3980 3981 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 3982 crtc->funcs->destroy(crtc); 3983 } 3984 3985 idr_destroy(&dev->mode_config.crtc_idr); 3986} 3987EXPORT_SYMBOL(drm_mode_config_cleanup); 3988