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/list.h> 33 #include <linux/slab.h> 34 #include <linux/export.h> 35 #include <drm/drmP.h> 36 #include <drm/drm_crtc.h> 37 #include <drm/drm_edid.h> 38 #include <drm/drm_fourcc.h> 39 40 /** 41 * drm_modeset_lock_all - take all modeset locks 42 * @dev: drm device 43 * 44 * This function takes all modeset locks, suitable where a more fine-grained 45 * scheme isn't (yet) implemented. 46 */ 47 void drm_modeset_lock_all(struct drm_device *dev) 48 { 49 struct drm_crtc *crtc; 50 51 mutex_lock(&dev->mode_config.mutex); 52 53 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 54 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); 55 } 56 EXPORT_SYMBOL(drm_modeset_lock_all); 57 58 /** 59 * drm_modeset_unlock_all - drop all modeset locks 60 * @dev: device 61 */ 62 void drm_modeset_unlock_all(struct drm_device *dev) 63 { 64 struct drm_crtc *crtc; 65 66 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 67 mutex_unlock(&crtc->mutex); 68 69 mutex_unlock(&dev->mode_config.mutex); 70 } 71 EXPORT_SYMBOL(drm_modeset_unlock_all); 72 73 /** 74 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked 75 * @dev: device 76 */ 77 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) 78 { 79 struct drm_crtc *crtc; 80 81 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 82 WARN_ON(!mutex_is_locked(&crtc->mutex)); 83 84 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); 85 } 86 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); 87 88 /* Avoid boilerplate. I'm tired of typing. */ 89 #define DRM_ENUM_NAME_FN(fnname, list) \ 90 char *fnname(int val) \ 91 { \ 92 int i; \ 93 for (i = 0; i < ARRAY_SIZE(list); i++) { \ 94 if (list[i].type == val) \ 95 return list[i].name; \ 96 } \ 97 return "(unknown)"; \ 98 } 99 100 /* 101 * Global properties 102 */ 103 static struct drm_prop_enum_list drm_dpms_enum_list[] = 104 { { DRM_MODE_DPMS_ON, "On" }, 105 { DRM_MODE_DPMS_STANDBY, "Standby" }, 106 { DRM_MODE_DPMS_SUSPEND, "Suspend" }, 107 { DRM_MODE_DPMS_OFF, "Off" } 108 }; 109 110 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) 111 112 /* 113 * Optional properties 114 */ 115 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] = 116 { 117 { DRM_MODE_SCALE_NONE, "None" }, 118 { DRM_MODE_SCALE_FULLSCREEN, "Full" }, 119 { DRM_MODE_SCALE_CENTER, "Center" }, 120 { DRM_MODE_SCALE_ASPECT, "Full aspect" }, 121 }; 122 123 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] = 124 { 125 { DRM_MODE_DITHERING_OFF, "Off" }, 126 { DRM_MODE_DITHERING_ON, "On" }, 127 { DRM_MODE_DITHERING_AUTO, "Automatic" }, 128 }; 129 130 /* 131 * Non-global properties, but "required" for certain connectors. 132 */ 133 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = 134 { 135 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 136 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 137 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 138 }; 139 140 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) 141 142 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = 143 { 144 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 145 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 146 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 147 }; 148 149 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, 150 drm_dvi_i_subconnector_enum_list) 151 152 static struct drm_prop_enum_list drm_tv_select_enum_list[] = 153 { 154 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 155 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 156 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 157 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 158 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 159 }; 160 161 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 162 163 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = 164 { 165 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 166 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 167 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 168 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 169 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 170 }; 171 172 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 173 drm_tv_subconnector_enum_list) 174 175 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = { 176 { DRM_MODE_DIRTY_OFF, "Off" }, 177 { DRM_MODE_DIRTY_ON, "On" }, 178 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, 179 }; 180 181 DRM_ENUM_NAME_FN(drm_get_dirty_info_name, 182 drm_dirty_info_enum_list) 183 184 struct drm_conn_prop_enum_list { 185 int type; 186 char *name; 187 int count; 188 }; 189 190 /* 191 * Connector and encoder types. 192 */ 193 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = 194 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 }, 195 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 }, 196 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 }, 197 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 }, 198 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 }, 199 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 }, 200 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 }, 201 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 }, 202 { DRM_MODE_CONNECTOR_Component, "Component", 0 }, 203 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 }, 204 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 }, 205 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 }, 206 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 }, 207 { DRM_MODE_CONNECTOR_TV, "TV", 0 }, 208 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 }, 209 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0}, 210 }; 211 212 static struct drm_prop_enum_list drm_encoder_enum_list[] = 213 { { DRM_MODE_ENCODER_NONE, "None" }, 214 { DRM_MODE_ENCODER_DAC, "DAC" }, 215 { DRM_MODE_ENCODER_TMDS, "TMDS" }, 216 { DRM_MODE_ENCODER_LVDS, "LVDS" }, 217 { DRM_MODE_ENCODER_TVDAC, "TV" }, 218 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, 219 }; 220 221 char *drm_get_encoder_name(struct drm_encoder *encoder) 222 { 223 static char buf[32]; 224 225 snprintf(buf, 32, "%s-%d", 226 drm_encoder_enum_list[encoder->encoder_type].name, 227 encoder->base.id); 228 return buf; 229 } 230 EXPORT_SYMBOL(drm_get_encoder_name); 231 232 char *drm_get_connector_name(struct drm_connector *connector) 233 { 234 static char buf[32]; 235 236 snprintf(buf, 32, "%s-%d", 237 drm_connector_enum_list[connector->connector_type].name, 238 connector->connector_type_id); 239 return buf; 240 } 241 EXPORT_SYMBOL(drm_get_connector_name); 242 243 char *drm_get_connector_status_name(enum drm_connector_status status) 244 { 245 if (status == connector_status_connected) 246 return "connected"; 247 else if (status == connector_status_disconnected) 248 return "disconnected"; 249 else 250 return "unknown"; 251 } 252 253 /** 254 * drm_mode_object_get - allocate a new modeset identifier 255 * @dev: DRM device 256 * @obj: object pointer, used to generate unique ID 257 * @obj_type: object type 258 * 259 * Create a unique identifier based on @ptr in @dev's identifier space. Used 260 * for tracking modes, CRTCs and connectors. 261 * 262 * RETURNS: 263 * New unique (relative to other objects in @dev) integer identifier for the 264 * object. 265 */ 266 static int drm_mode_object_get(struct drm_device *dev, 267 struct drm_mode_object *obj, uint32_t obj_type) 268 { 269 int ret; 270 271 mutex_lock(&dev->mode_config.idr_mutex); 272 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL); 273 if (ret >= 0) { 274 /* 275 * Set up the object linking under the protection of the idr 276 * lock so that other users can't see inconsistent state. 277 */ 278 obj->id = ret; 279 obj->type = obj_type; 280 } 281 mutex_unlock(&dev->mode_config.idr_mutex); 282 283 return ret < 0 ? ret : 0; 284 } 285 286 /** 287 * drm_mode_object_put - free a modeset identifer 288 * @dev: DRM device 289 * @object: object to free 290 * 291 * Free @id from @dev's unique identifier pool. 292 */ 293 static void drm_mode_object_put(struct drm_device *dev, 294 struct drm_mode_object *object) 295 { 296 mutex_lock(&dev->mode_config.idr_mutex); 297 idr_remove(&dev->mode_config.crtc_idr, object->id); 298 mutex_unlock(&dev->mode_config.idr_mutex); 299 } 300 301 /** 302 * drm_mode_object_find - look up a drm object with static lifetime 303 * @dev: drm device 304 * @id: id of the mode object 305 * @type: type of the mode object 306 * 307 * Note that framebuffers cannot be looked up with this functions - since those 308 * are reference counted, they need special treatment. 309 */ 310 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 311 uint32_t id, uint32_t type) 312 { 313 struct drm_mode_object *obj = NULL; 314 315 /* Framebuffers are reference counted and need their own lookup 316 * function.*/ 317 WARN_ON(type == DRM_MODE_OBJECT_FB); 318 319 mutex_lock(&dev->mode_config.idr_mutex); 320 obj = idr_find(&dev->mode_config.crtc_idr, id); 321 if (!obj || (obj->type != type) || (obj->id != id)) 322 obj = NULL; 323 mutex_unlock(&dev->mode_config.idr_mutex); 324 325 return obj; 326 } 327 EXPORT_SYMBOL(drm_mode_object_find); 328 329 /** 330 * drm_framebuffer_init - initialize a framebuffer 331 * @dev: DRM device 332 * @fb: framebuffer to be initialized 333 * @funcs: ... with these functions 334 * 335 * Allocates an ID for the framebuffer's parent mode object, sets its mode 336 * functions & device file and adds it to the master fd list. 337 * 338 * IMPORTANT: 339 * This functions publishes the fb and makes it available for concurrent access 340 * by other users. Which means by this point the fb _must_ be fully set up - 341 * since all the fb attributes are invariant over its lifetime, no further 342 * locking but only correct reference counting is required. 343 * 344 * RETURNS: 345 * Zero on success, error code on failure. 346 */ 347 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, 348 const struct drm_framebuffer_funcs *funcs) 349 { 350 int ret; 351 352 mutex_lock(&dev->mode_config.fb_lock); 353 kref_init(&fb->refcount); 354 INIT_LIST_HEAD(&fb->filp_head); 355 fb->dev = dev; 356 fb->funcs = funcs; 357 358 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); 359 if (ret) 360 goto out; 361 362 /* Grab the idr reference. */ 363 drm_framebuffer_reference(fb); 364 365 dev->mode_config.num_fb++; 366 list_add(&fb->head, &dev->mode_config.fb_list); 367 out: 368 mutex_unlock(&dev->mode_config.fb_lock); 369 370 return 0; 371 } 372 EXPORT_SYMBOL(drm_framebuffer_init); 373 374 static void drm_framebuffer_free(struct kref *kref) 375 { 376 struct drm_framebuffer *fb = 377 container_of(kref, struct drm_framebuffer, refcount); 378 fb->funcs->destroy(fb); 379 } 380 381 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev, 382 uint32_t id) 383 { 384 struct drm_mode_object *obj = NULL; 385 struct drm_framebuffer *fb; 386 387 mutex_lock(&dev->mode_config.idr_mutex); 388 obj = idr_find(&dev->mode_config.crtc_idr, id); 389 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id)) 390 fb = NULL; 391 else 392 fb = obj_to_fb(obj); 393 mutex_unlock(&dev->mode_config.idr_mutex); 394 395 return fb; 396 } 397 398 /** 399 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference 400 * @dev: drm device 401 * @id: id of the fb object 402 * 403 * If successful, this grabs an additional reference to the framebuffer - 404 * callers need to make sure to eventually unreference the returned framebuffer 405 * again. 406 */ 407 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, 408 uint32_t id) 409 { 410 struct drm_framebuffer *fb; 411 412 mutex_lock(&dev->mode_config.fb_lock); 413 fb = __drm_framebuffer_lookup(dev, id); 414 if (fb) 415 kref_get(&fb->refcount); 416 mutex_unlock(&dev->mode_config.fb_lock); 417 418 return fb; 419 } 420 EXPORT_SYMBOL(drm_framebuffer_lookup); 421 422 /** 423 * drm_framebuffer_unreference - unref a framebuffer 424 * @fb: framebuffer to unref 425 * 426 * This functions decrements the fb's refcount and frees it if it drops to zero. 427 */ 428 void drm_framebuffer_unreference(struct drm_framebuffer *fb) 429 { 430 DRM_DEBUG("FB ID: %d\n", fb->base.id); 431 kref_put(&fb->refcount, drm_framebuffer_free); 432 } 433 EXPORT_SYMBOL(drm_framebuffer_unreference); 434 435 /** 436 * drm_framebuffer_reference - incr the fb refcnt 437 * @fb: framebuffer 438 */ 439 void drm_framebuffer_reference(struct drm_framebuffer *fb) 440 { 441 DRM_DEBUG("FB ID: %d\n", fb->base.id); 442 kref_get(&fb->refcount); 443 } 444 EXPORT_SYMBOL(drm_framebuffer_reference); 445 446 static void drm_framebuffer_free_bug(struct kref *kref) 447 { 448 BUG(); 449 } 450 451 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) 452 { 453 DRM_DEBUG("FB ID: %d\n", fb->base.id); 454 kref_put(&fb->refcount, drm_framebuffer_free_bug); 455 } 456 457 /* dev->mode_config.fb_lock must be held! */ 458 static void __drm_framebuffer_unregister(struct drm_device *dev, 459 struct drm_framebuffer *fb) 460 { 461 mutex_lock(&dev->mode_config.idr_mutex); 462 idr_remove(&dev->mode_config.crtc_idr, fb->base.id); 463 mutex_unlock(&dev->mode_config.idr_mutex); 464 465 fb->base.id = 0; 466 467 __drm_framebuffer_unreference(fb); 468 } 469 470 /** 471 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr 472 * @fb: fb to unregister 473 * 474 * Drivers need to call this when cleaning up driver-private framebuffers, e.g. 475 * those used for fbdev. Note that the caller must hold a reference of it's own, 476 * i.e. the object may not be destroyed through this call (since it'll lead to a 477 * locking inversion). 478 */ 479 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) 480 { 481 struct drm_device *dev = fb->dev; 482 483 mutex_lock(&dev->mode_config.fb_lock); 484 /* Mark fb as reaped and drop idr ref. */ 485 __drm_framebuffer_unregister(dev, fb); 486 mutex_unlock(&dev->mode_config.fb_lock); 487 } 488 EXPORT_SYMBOL(drm_framebuffer_unregister_private); 489 490 /** 491 * drm_framebuffer_cleanup - remove a framebuffer object 492 * @fb: framebuffer to remove 493 * 494 * Cleanup references to a user-created framebuffer. This function is intended 495 * to be used from the drivers ->destroy callback. 496 * 497 * Note that this function does not remove the fb from active usuage - if it is 498 * still used anywhere, hilarity can ensue since userspace could call getfb on 499 * the id and get back -EINVAL. Obviously no concern at driver unload time. 500 * 501 * Also, the framebuffer will not be removed from the lookup idr - for 502 * user-created framebuffers this will happen in in the rmfb ioctl. For 503 * driver-private objects (e.g. for fbdev) drivers need to explicitly call 504 * drm_framebuffer_unregister_private. 505 */ 506 void drm_framebuffer_cleanup(struct drm_framebuffer *fb) 507 { 508 struct drm_device *dev = fb->dev; 509 510 mutex_lock(&dev->mode_config.fb_lock); 511 list_del(&fb->head); 512 dev->mode_config.num_fb--; 513 mutex_unlock(&dev->mode_config.fb_lock); 514 } 515 EXPORT_SYMBOL(drm_framebuffer_cleanup); 516 517 /** 518 * drm_framebuffer_remove - remove and unreference a framebuffer object 519 * @fb: framebuffer to remove 520 * 521 * Scans all the CRTCs and planes in @dev's mode_config. If they're 522 * using @fb, removes it, setting it to NULL. Then drops the reference to the 523 * passed-in framebuffer. Might take the modeset locks. 524 * 525 * Note that this function optimizes the cleanup away if the caller holds the 526 * last reference to the framebuffer. It is also guaranteed to not take the 527 * modeset locks in this case. 528 */ 529 void drm_framebuffer_remove(struct drm_framebuffer *fb) 530 { 531 struct drm_device *dev = fb->dev; 532 struct drm_crtc *crtc; 533 struct drm_plane *plane; 534 struct drm_mode_set set; 535 int ret; 536 537 WARN_ON(!list_empty(&fb->filp_head)); 538 539 /* 540 * drm ABI mandates that we remove any deleted framebuffers from active 541 * useage. But since most sane clients only remove framebuffers they no 542 * longer need, try to optimize this away. 543 * 544 * Since we're holding a reference ourselves, observing a refcount of 1 545 * means that we're the last holder and can skip it. Also, the refcount 546 * can never increase from 1 again, so we don't need any barriers or 547 * locks. 548 * 549 * Note that userspace could try to race with use and instate a new 550 * usage _after_ we've cleared all current ones. End result will be an 551 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot 552 * in this manner. 553 */ 554 if (atomic_read(&fb->refcount.refcount) > 1) { 555 drm_modeset_lock_all(dev); 556 /* remove from any CRTC */ 557 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 558 if (crtc->fb == fb) { 559 /* should turn off the crtc */ 560 memset(&set, 0, sizeof(struct drm_mode_set)); 561 set.crtc = crtc; 562 set.fb = NULL; 563 ret = drm_mode_set_config_internal(&set); 564 if (ret) 565 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); 566 } 567 } 568 569 list_for_each_entry(plane, &dev->mode_config.plane_list, head) { 570 if (plane->fb == fb) { 571 /* should turn off the crtc */ 572 ret = plane->funcs->disable_plane(plane); 573 if (ret) 574 DRM_ERROR("failed to disable plane with busy fb\n"); 575 /* disconnect the plane from the fb and crtc: */ 576 __drm_framebuffer_unreference(plane->fb); 577 plane->fb = NULL; 578 plane->crtc = NULL; 579 } 580 } 581 drm_modeset_unlock_all(dev); 582 } 583 584 drm_framebuffer_unreference(fb); 585 } 586 EXPORT_SYMBOL(drm_framebuffer_remove); 587 588 /** 589 * drm_crtc_init - Initialise a new CRTC object 590 * @dev: DRM device 591 * @crtc: CRTC object to init 592 * @funcs: callbacks for the new CRTC 593 * 594 * Inits a new object created as base part of an driver crtc object. 595 * 596 * RETURNS: 597 * Zero on success, error code on failure. 598 */ 599 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 600 const struct drm_crtc_funcs *funcs) 601 { 602 int ret; 603 604 crtc->dev = dev; 605 crtc->funcs = funcs; 606 crtc->invert_dimensions = false; 607 608 drm_modeset_lock_all(dev); 609 mutex_init(&crtc->mutex); 610 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); 611 612 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 613 if (ret) 614 goto out; 615 616 crtc->base.properties = &crtc->properties; 617 618 list_add_tail(&crtc->head, &dev->mode_config.crtc_list); 619 dev->mode_config.num_crtc++; 620 621 out: 622 drm_modeset_unlock_all(dev); 623 624 return ret; 625 } 626 EXPORT_SYMBOL(drm_crtc_init); 627 628 /** 629 * drm_crtc_cleanup - Cleans up the core crtc usage. 630 * @crtc: CRTC to cleanup 631 * 632 * Cleanup @crtc. Removes from drm modesetting space 633 * does NOT free object, caller does that. 634 */ 635 void drm_crtc_cleanup(struct drm_crtc *crtc) 636 { 637 struct drm_device *dev = crtc->dev; 638 639 kfree(crtc->gamma_store); 640 crtc->gamma_store = NULL; 641 642 drm_mode_object_put(dev, &crtc->base); 643 list_del(&crtc->head); 644 dev->mode_config.num_crtc--; 645 } 646 EXPORT_SYMBOL(drm_crtc_cleanup); 647 648 /** 649 * drm_mode_probed_add - add a mode to a connector's probed mode list 650 * @connector: connector the new mode 651 * @mode: mode data 652 * 653 * Add @mode to @connector's mode list for later use. 654 */ 655 void drm_mode_probed_add(struct drm_connector *connector, 656 struct drm_display_mode *mode) 657 { 658 list_add(&mode->head, &connector->probed_modes); 659 } 660 EXPORT_SYMBOL(drm_mode_probed_add); 661 662 /** 663 * drm_mode_remove - remove and free a mode 664 * @connector: connector list to modify 665 * @mode: mode to remove 666 * 667 * Remove @mode from @connector's mode list, then free it. 668 */ 669 void drm_mode_remove(struct drm_connector *connector, 670 struct drm_display_mode *mode) 671 { 672 list_del(&mode->head); 673 drm_mode_destroy(connector->dev, mode); 674 } 675 EXPORT_SYMBOL(drm_mode_remove); 676 677 /** 678 * drm_connector_init - Init a preallocated connector 679 * @dev: DRM device 680 * @connector: the connector to init 681 * @funcs: callbacks for this connector 682 * @connector_type: user visible type of the connector 683 * 684 * Initialises a preallocated connector. Connectors should be 685 * subclassed as part of driver connector objects. 686 * 687 * RETURNS: 688 * Zero on success, error code on failure. 689 */ 690 int drm_connector_init(struct drm_device *dev, 691 struct drm_connector *connector, 692 const struct drm_connector_funcs *funcs, 693 int connector_type) 694 { 695 int ret; 696 697 drm_modeset_lock_all(dev); 698 699 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); 700 if (ret) 701 goto out; 702 703 connector->base.properties = &connector->properties; 704 connector->dev = dev; 705 connector->funcs = funcs; 706 connector->connector_type = connector_type; 707 connector->connector_type_id = 708 ++drm_connector_enum_list[connector_type].count; /* TODO */ 709 INIT_LIST_HEAD(&connector->user_modes); 710 INIT_LIST_HEAD(&connector->probed_modes); 711 INIT_LIST_HEAD(&connector->modes); 712 connector->edid_blob_ptr = NULL; 713 connector->status = connector_status_unknown; 714 715 list_add_tail(&connector->head, &dev->mode_config.connector_list); 716 dev->mode_config.num_connector++; 717 718 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) 719 drm_object_attach_property(&connector->base, 720 dev->mode_config.edid_property, 721 0); 722 723 drm_object_attach_property(&connector->base, 724 dev->mode_config.dpms_property, 0); 725 726 out: 727 drm_modeset_unlock_all(dev); 728 729 return ret; 730 } 731 EXPORT_SYMBOL(drm_connector_init); 732 733 /** 734 * drm_connector_cleanup - cleans up an initialised connector 735 * @connector: connector to cleanup 736 * 737 * Cleans up the connector but doesn't free the object. 738 */ 739 void drm_connector_cleanup(struct drm_connector *connector) 740 { 741 struct drm_device *dev = connector->dev; 742 struct drm_display_mode *mode, *t; 743 744 list_for_each_entry_safe(mode, t, &connector->probed_modes, head) 745 drm_mode_remove(connector, mode); 746 747 list_for_each_entry_safe(mode, t, &connector->modes, head) 748 drm_mode_remove(connector, mode); 749 750 list_for_each_entry_safe(mode, t, &connector->user_modes, head) 751 drm_mode_remove(connector, mode); 752 753 drm_mode_object_put(dev, &connector->base); 754 list_del(&connector->head); 755 dev->mode_config.num_connector--; 756 } 757 EXPORT_SYMBOL(drm_connector_cleanup); 758 759 void drm_connector_unplug_all(struct drm_device *dev) 760 { 761 struct drm_connector *connector; 762 763 /* taking the mode config mutex ends up in a clash with sysfs */ 764 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 765 drm_sysfs_connector_remove(connector); 766 767 } 768 EXPORT_SYMBOL(drm_connector_unplug_all); 769 770 int drm_encoder_init(struct drm_device *dev, 771 struct drm_encoder *encoder, 772 const struct drm_encoder_funcs *funcs, 773 int encoder_type) 774 { 775 int ret; 776 777 drm_modeset_lock_all(dev); 778 779 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); 780 if (ret) 781 goto out; 782 783 encoder->dev = dev; 784 encoder->encoder_type = encoder_type; 785 encoder->funcs = funcs; 786 787 list_add_tail(&encoder->head, &dev->mode_config.encoder_list); 788 dev->mode_config.num_encoder++; 789 790 out: 791 drm_modeset_unlock_all(dev); 792 793 return ret; 794 } 795 EXPORT_SYMBOL(drm_encoder_init); 796 797 void drm_encoder_cleanup(struct drm_encoder *encoder) 798 { 799 struct drm_device *dev = encoder->dev; 800 drm_modeset_lock_all(dev); 801 drm_mode_object_put(dev, &encoder->base); 802 list_del(&encoder->head); 803 dev->mode_config.num_encoder--; 804 drm_modeset_unlock_all(dev); 805 } 806 EXPORT_SYMBOL(drm_encoder_cleanup); 807 808 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, 809 unsigned long possible_crtcs, 810 const struct drm_plane_funcs *funcs, 811 const uint32_t *formats, uint32_t format_count, 812 bool priv) 813 { 814 int ret; 815 816 drm_modeset_lock_all(dev); 817 818 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); 819 if (ret) 820 goto out; 821 822 plane->base.properties = &plane->properties; 823 plane->dev = dev; 824 plane->funcs = funcs; 825 plane->format_types = kmalloc(sizeof(uint32_t) * format_count, 826 GFP_KERNEL); 827 if (!plane->format_types) { 828 DRM_DEBUG_KMS("out of memory when allocating plane\n"); 829 drm_mode_object_put(dev, &plane->base); 830 ret = -ENOMEM; 831 goto out; 832 } 833 834 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); 835 plane->format_count = format_count; 836 plane->possible_crtcs = possible_crtcs; 837 838 /* private planes are not exposed to userspace, but depending on 839 * display hardware, might be convenient to allow sharing programming 840 * for the scanout engine with the crtc implementation. 841 */ 842 if (!priv) { 843 list_add_tail(&plane->head, &dev->mode_config.plane_list); 844 dev->mode_config.num_plane++; 845 } else { 846 INIT_LIST_HEAD(&plane->head); 847 } 848 849 out: 850 drm_modeset_unlock_all(dev); 851 852 return ret; 853 } 854 EXPORT_SYMBOL(drm_plane_init); 855 856 void drm_plane_cleanup(struct drm_plane *plane) 857 { 858 struct drm_device *dev = plane->dev; 859 860 drm_modeset_lock_all(dev); 861 kfree(plane->format_types); 862 drm_mode_object_put(dev, &plane->base); 863 /* if not added to a list, it must be a private plane */ 864 if (!list_empty(&plane->head)) { 865 list_del(&plane->head); 866 dev->mode_config.num_plane--; 867 } 868 drm_modeset_unlock_all(dev); 869 } 870 EXPORT_SYMBOL(drm_plane_cleanup); 871 872 /** 873 * drm_mode_create - create a new display mode 874 * @dev: DRM device 875 * 876 * Create a new drm_display_mode, give it an ID, and return it. 877 * 878 * RETURNS: 879 * Pointer to new mode on success, NULL on error. 880 */ 881 struct drm_display_mode *drm_mode_create(struct drm_device *dev) 882 { 883 struct drm_display_mode *nmode; 884 885 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 886 if (!nmode) 887 return NULL; 888 889 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { 890 kfree(nmode); 891 return NULL; 892 } 893 894 return nmode; 895 } 896 EXPORT_SYMBOL(drm_mode_create); 897 898 /** 899 * drm_mode_destroy - remove a mode 900 * @dev: DRM device 901 * @mode: mode to remove 902 * 903 * Free @mode's unique identifier, then free it. 904 */ 905 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 906 { 907 if (!mode) 908 return; 909 910 drm_mode_object_put(dev, &mode->base); 911 912 kfree(mode); 913 } 914 EXPORT_SYMBOL(drm_mode_destroy); 915 916 static int drm_mode_create_standard_connector_properties(struct drm_device *dev) 917 { 918 struct drm_property *edid; 919 struct drm_property *dpms; 920 921 /* 922 * Standard properties (apply to all connectors) 923 */ 924 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | 925 DRM_MODE_PROP_IMMUTABLE, 926 "EDID", 0); 927 dev->mode_config.edid_property = edid; 928 929 dpms = drm_property_create_enum(dev, 0, 930 "DPMS", drm_dpms_enum_list, 931 ARRAY_SIZE(drm_dpms_enum_list)); 932 dev->mode_config.dpms_property = dpms; 933 934 return 0; 935 } 936 937 /** 938 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties 939 * @dev: DRM device 940 * 941 * Called by a driver the first time a DVI-I connector is made. 942 */ 943 int drm_mode_create_dvi_i_properties(struct drm_device *dev) 944 { 945 struct drm_property *dvi_i_selector; 946 struct drm_property *dvi_i_subconnector; 947 948 if (dev->mode_config.dvi_i_select_subconnector_property) 949 return 0; 950 951 dvi_i_selector = 952 drm_property_create_enum(dev, 0, 953 "select subconnector", 954 drm_dvi_i_select_enum_list, 955 ARRAY_SIZE(drm_dvi_i_select_enum_list)); 956 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; 957 958 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 959 "subconnector", 960 drm_dvi_i_subconnector_enum_list, 961 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); 962 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; 963 964 return 0; 965 } 966 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); 967 968 /** 969 * drm_create_tv_properties - create TV specific connector properties 970 * @dev: DRM device 971 * @num_modes: number of different TV formats (modes) supported 972 * @modes: array of pointers to strings containing name of each format 973 * 974 * Called by a driver's TV initialization routine, this function creates 975 * the TV specific connector properties for a given device. Caller is 976 * responsible for allocating a list of format names and passing them to 977 * this routine. 978 */ 979 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, 980 char *modes[]) 981 { 982 struct drm_property *tv_selector; 983 struct drm_property *tv_subconnector; 984 int i; 985 986 if (dev->mode_config.tv_select_subconnector_property) 987 return 0; 988 989 /* 990 * Basic connector properties 991 */ 992 tv_selector = drm_property_create_enum(dev, 0, 993 "select subconnector", 994 drm_tv_select_enum_list, 995 ARRAY_SIZE(drm_tv_select_enum_list)); 996 dev->mode_config.tv_select_subconnector_property = tv_selector; 997 998 tv_subconnector = 999 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1000 "subconnector", 1001 drm_tv_subconnector_enum_list, 1002 ARRAY_SIZE(drm_tv_subconnector_enum_list)); 1003 dev->mode_config.tv_subconnector_property = tv_subconnector; 1004 1005 /* 1006 * Other, TV specific properties: margins & TV modes. 1007 */ 1008 dev->mode_config.tv_left_margin_property = 1009 drm_property_create_range(dev, 0, "left margin", 0, 100); 1010 1011 dev->mode_config.tv_right_margin_property = 1012 drm_property_create_range(dev, 0, "right margin", 0, 100); 1013 1014 dev->mode_config.tv_top_margin_property = 1015 drm_property_create_range(dev, 0, "top margin", 0, 100); 1016 1017 dev->mode_config.tv_bottom_margin_property = 1018 drm_property_create_range(dev, 0, "bottom margin", 0, 100); 1019 1020 dev->mode_config.tv_mode_property = 1021 drm_property_create(dev, DRM_MODE_PROP_ENUM, 1022 "mode", num_modes); 1023 for (i = 0; i < num_modes; i++) 1024 drm_property_add_enum(dev->mode_config.tv_mode_property, i, 1025 i, modes[i]); 1026 1027 dev->mode_config.tv_brightness_property = 1028 drm_property_create_range(dev, 0, "brightness", 0, 100); 1029 1030 dev->mode_config.tv_contrast_property = 1031 drm_property_create_range(dev, 0, "contrast", 0, 100); 1032 1033 dev->mode_config.tv_flicker_reduction_property = 1034 drm_property_create_range(dev, 0, "flicker reduction", 0, 100); 1035 1036 dev->mode_config.tv_overscan_property = 1037 drm_property_create_range(dev, 0, "overscan", 0, 100); 1038 1039 dev->mode_config.tv_saturation_property = 1040 drm_property_create_range(dev, 0, "saturation", 0, 100); 1041 1042 dev->mode_config.tv_hue_property = 1043 drm_property_create_range(dev, 0, "hue", 0, 100); 1044 1045 return 0; 1046 } 1047 EXPORT_SYMBOL(drm_mode_create_tv_properties); 1048 1049 /** 1050 * drm_mode_create_scaling_mode_property - create scaling mode property 1051 * @dev: DRM device 1052 * 1053 * Called by a driver the first time it's needed, must be attached to desired 1054 * connectors. 1055 */ 1056 int drm_mode_create_scaling_mode_property(struct drm_device *dev) 1057 { 1058 struct drm_property *scaling_mode; 1059 1060 if (dev->mode_config.scaling_mode_property) 1061 return 0; 1062 1063 scaling_mode = 1064 drm_property_create_enum(dev, 0, "scaling mode", 1065 drm_scaling_mode_enum_list, 1066 ARRAY_SIZE(drm_scaling_mode_enum_list)); 1067 1068 dev->mode_config.scaling_mode_property = scaling_mode; 1069 1070 return 0; 1071 } 1072 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); 1073 1074 /** 1075 * drm_mode_create_dithering_property - create dithering property 1076 * @dev: DRM device 1077 * 1078 * Called by a driver the first time it's needed, must be attached to desired 1079 * connectors. 1080 */ 1081 int drm_mode_create_dithering_property(struct drm_device *dev) 1082 { 1083 struct drm_property *dithering_mode; 1084 1085 if (dev->mode_config.dithering_mode_property) 1086 return 0; 1087 1088 dithering_mode = 1089 drm_property_create_enum(dev, 0, "dithering", 1090 drm_dithering_mode_enum_list, 1091 ARRAY_SIZE(drm_dithering_mode_enum_list)); 1092 dev->mode_config.dithering_mode_property = dithering_mode; 1093 1094 return 0; 1095 } 1096 EXPORT_SYMBOL(drm_mode_create_dithering_property); 1097 1098 /** 1099 * drm_mode_create_dirty_property - create dirty property 1100 * @dev: DRM device 1101 * 1102 * Called by a driver the first time it's needed, must be attached to desired 1103 * connectors. 1104 */ 1105 int drm_mode_create_dirty_info_property(struct drm_device *dev) 1106 { 1107 struct drm_property *dirty_info; 1108 1109 if (dev->mode_config.dirty_info_property) 1110 return 0; 1111 1112 dirty_info = 1113 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1114 "dirty", 1115 drm_dirty_info_enum_list, 1116 ARRAY_SIZE(drm_dirty_info_enum_list)); 1117 dev->mode_config.dirty_info_property = dirty_info; 1118 1119 return 0; 1120 } 1121 EXPORT_SYMBOL(drm_mode_create_dirty_info_property); 1122 1123 /** 1124 * drm_mode_config_init - initialize DRM mode_configuration structure 1125 * @dev: DRM device 1126 * 1127 * Initialize @dev's mode_config structure, used for tracking the graphics 1128 * configuration of @dev. 1129 * 1130 * Since this initializes the modeset locks, no locking is possible. Which is no 1131 * problem, since this should happen single threaded at init time. It is the 1132 * driver's problem to ensure this guarantee. 1133 * 1134 */ 1135 void drm_mode_config_init(struct drm_device *dev) 1136 { 1137 mutex_init(&dev->mode_config.mutex); 1138 mutex_init(&dev->mode_config.idr_mutex); 1139 mutex_init(&dev->mode_config.fb_lock); 1140 INIT_LIST_HEAD(&dev->mode_config.fb_list); 1141 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 1142 INIT_LIST_HEAD(&dev->mode_config.connector_list); 1143 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 1144 INIT_LIST_HEAD(&dev->mode_config.property_list); 1145 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 1146 INIT_LIST_HEAD(&dev->mode_config.plane_list); 1147 idr_init(&dev->mode_config.crtc_idr); 1148 1149 drm_modeset_lock_all(dev); 1150 drm_mode_create_standard_connector_properties(dev); 1151 drm_modeset_unlock_all(dev); 1152 1153 /* Just to be sure */ 1154 dev->mode_config.num_fb = 0; 1155 dev->mode_config.num_connector = 0; 1156 dev->mode_config.num_crtc = 0; 1157 dev->mode_config.num_encoder = 0; 1158 } 1159 EXPORT_SYMBOL(drm_mode_config_init); 1160 1161 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) 1162 { 1163 uint32_t total_objects = 0; 1164 1165 total_objects += dev->mode_config.num_crtc; 1166 total_objects += dev->mode_config.num_connector; 1167 total_objects += dev->mode_config.num_encoder; 1168 1169 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); 1170 if (!group->id_list) 1171 return -ENOMEM; 1172 1173 group->num_crtcs = 0; 1174 group->num_connectors = 0; 1175 group->num_encoders = 0; 1176 return 0; 1177 } 1178 1179 int drm_mode_group_init_legacy_group(struct drm_device *dev, 1180 struct drm_mode_group *group) 1181 { 1182 struct drm_crtc *crtc; 1183 struct drm_encoder *encoder; 1184 struct drm_connector *connector; 1185 int ret; 1186 1187 if ((ret = drm_mode_group_init(dev, group))) 1188 return ret; 1189 1190 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 1191 group->id_list[group->num_crtcs++] = crtc->base.id; 1192 1193 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 1194 group->id_list[group->num_crtcs + group->num_encoders++] = 1195 encoder->base.id; 1196 1197 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 1198 group->id_list[group->num_crtcs + group->num_encoders + 1199 group->num_connectors++] = connector->base.id; 1200 1201 return 0; 1202 } 1203 EXPORT_SYMBOL(drm_mode_group_init_legacy_group); 1204 1205 /** 1206 * drm_mode_config_cleanup - free up DRM mode_config info 1207 * @dev: DRM device 1208 * 1209 * Free up all the connectors and CRTCs associated with this DRM device, then 1210 * free up the framebuffers and associated buffer objects. 1211 * 1212 * Note that since this /should/ happen single-threaded at driver/device 1213 * teardown time, no locking is required. It's the driver's job to ensure that 1214 * this guarantee actually holds true. 1215 * 1216 * FIXME: cleanup any dangling user buffer objects too 1217 */ 1218 void drm_mode_config_cleanup(struct drm_device *dev) 1219 { 1220 struct drm_connector *connector, *ot; 1221 struct drm_crtc *crtc, *ct; 1222 struct drm_encoder *encoder, *enct; 1223 struct drm_framebuffer *fb, *fbt; 1224 struct drm_property *property, *pt; 1225 struct drm_plane *plane, *plt; 1226 1227 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 1228 head) { 1229 encoder->funcs->destroy(encoder); 1230 } 1231 1232 list_for_each_entry_safe(connector, ot, 1233 &dev->mode_config.connector_list, head) { 1234 connector->funcs->destroy(connector); 1235 } 1236 1237 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 1238 head) { 1239 drm_property_destroy(dev, property); 1240 } 1241 1242 /* 1243 * Single-threaded teardown context, so it's not required to grab the 1244 * fb_lock to protect against concurrent fb_list access. Contrary, it 1245 * would actually deadlock with the drm_framebuffer_cleanup function. 1246 * 1247 * Also, if there are any framebuffers left, that's a driver leak now, 1248 * so politely WARN about this. 1249 */ 1250 WARN_ON(!list_empty(&dev->mode_config.fb_list)); 1251 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 1252 drm_framebuffer_remove(fb); 1253 } 1254 1255 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 1256 head) { 1257 plane->funcs->destroy(plane); 1258 } 1259 1260 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 1261 crtc->funcs->destroy(crtc); 1262 } 1263 1264 idr_destroy(&dev->mode_config.crtc_idr); 1265 } 1266 EXPORT_SYMBOL(drm_mode_config_cleanup); 1267 1268 /** 1269 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo 1270 * @out: drm_mode_modeinfo struct to return to the user 1271 * @in: drm_display_mode to use 1272 * 1273 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 1274 * the user. 1275 */ 1276 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, 1277 const struct drm_display_mode *in) 1278 { 1279 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || 1280 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || 1281 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || 1282 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || 1283 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, 1284 "timing values too large for mode info\n"); 1285 1286 out->clock = in->clock; 1287 out->hdisplay = in->hdisplay; 1288 out->hsync_start = in->hsync_start; 1289 out->hsync_end = in->hsync_end; 1290 out->htotal = in->htotal; 1291 out->hskew = in->hskew; 1292 out->vdisplay = in->vdisplay; 1293 out->vsync_start = in->vsync_start; 1294 out->vsync_end = in->vsync_end; 1295 out->vtotal = in->vtotal; 1296 out->vscan = in->vscan; 1297 out->vrefresh = in->vrefresh; 1298 out->flags = in->flags; 1299 out->type = in->type; 1300 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1301 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1302 } 1303 1304 /** 1305 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode 1306 * @out: drm_display_mode to return to the user 1307 * @in: drm_mode_modeinfo to use 1308 * 1309 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 1310 * the caller. 1311 * 1312 * RETURNS: 1313 * Zero on success, errno on failure. 1314 */ 1315 static int drm_crtc_convert_umode(struct drm_display_mode *out, 1316 const struct drm_mode_modeinfo *in) 1317 { 1318 if (in->clock > INT_MAX || in->vrefresh > INT_MAX) 1319 return -ERANGE; 1320 1321 out->clock = in->clock; 1322 out->hdisplay = in->hdisplay; 1323 out->hsync_start = in->hsync_start; 1324 out->hsync_end = in->hsync_end; 1325 out->htotal = in->htotal; 1326 out->hskew = in->hskew; 1327 out->vdisplay = in->vdisplay; 1328 out->vsync_start = in->vsync_start; 1329 out->vsync_end = in->vsync_end; 1330 out->vtotal = in->vtotal; 1331 out->vscan = in->vscan; 1332 out->vrefresh = in->vrefresh; 1333 out->flags = in->flags; 1334 out->type = in->type; 1335 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1336 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1337 1338 return 0; 1339 } 1340 1341 /** 1342 * drm_mode_getresources - get graphics configuration 1343 * @dev: drm device for the ioctl 1344 * @data: data pointer for the ioctl 1345 * @file_priv: drm file for the ioctl call 1346 * 1347 * Construct a set of configuration description structures and return 1348 * them to the user, including CRTC, connector and framebuffer configuration. 1349 * 1350 * Called by the user via ioctl. 1351 * 1352 * RETURNS: 1353 * Zero on success, errno on failure. 1354 */ 1355 int drm_mode_getresources(struct drm_device *dev, void *data, 1356 struct drm_file *file_priv) 1357 { 1358 struct drm_mode_card_res *card_res = data; 1359 struct list_head *lh; 1360 struct drm_framebuffer *fb; 1361 struct drm_connector *connector; 1362 struct drm_crtc *crtc; 1363 struct drm_encoder *encoder; 1364 int ret = 0; 1365 int connector_count = 0; 1366 int crtc_count = 0; 1367 int fb_count = 0; 1368 int encoder_count = 0; 1369 int copied = 0, i; 1370 uint32_t __user *fb_id; 1371 uint32_t __user *crtc_id; 1372 uint32_t __user *connector_id; 1373 uint32_t __user *encoder_id; 1374 struct drm_mode_group *mode_group; 1375 1376 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1377 return -EINVAL; 1378 1379 1380 mutex_lock(&file_priv->fbs_lock); 1381 /* 1382 * For the non-control nodes we need to limit the list of resources 1383 * by IDs in the group list for this node 1384 */ 1385 list_for_each(lh, &file_priv->fbs) 1386 fb_count++; 1387 1388 /* handle this in 4 parts */ 1389 /* FBs */ 1390 if (card_res->count_fbs >= fb_count) { 1391 copied = 0; 1392 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; 1393 list_for_each_entry(fb, &file_priv->fbs, filp_head) { 1394 if (put_user(fb->base.id, fb_id + copied)) { 1395 mutex_unlock(&file_priv->fbs_lock); 1396 return -EFAULT; 1397 } 1398 copied++; 1399 } 1400 } 1401 card_res->count_fbs = fb_count; 1402 mutex_unlock(&file_priv->fbs_lock); 1403 1404 drm_modeset_lock_all(dev); 1405 mode_group = &file_priv->master->minor->mode_group; 1406 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1407 1408 list_for_each(lh, &dev->mode_config.crtc_list) 1409 crtc_count++; 1410 1411 list_for_each(lh, &dev->mode_config.connector_list) 1412 connector_count++; 1413 1414 list_for_each(lh, &dev->mode_config.encoder_list) 1415 encoder_count++; 1416 } else { 1417 1418 crtc_count = mode_group->num_crtcs; 1419 connector_count = mode_group->num_connectors; 1420 encoder_count = mode_group->num_encoders; 1421 } 1422 1423 card_res->max_height = dev->mode_config.max_height; 1424 card_res->min_height = dev->mode_config.min_height; 1425 card_res->max_width = dev->mode_config.max_width; 1426 card_res->min_width = dev->mode_config.min_width; 1427 1428 /* CRTCs */ 1429 if (card_res->count_crtcs >= crtc_count) { 1430 copied = 0; 1431 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; 1432 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1433 list_for_each_entry(crtc, &dev->mode_config.crtc_list, 1434 head) { 1435 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1436 if (put_user(crtc->base.id, crtc_id + copied)) { 1437 ret = -EFAULT; 1438 goto out; 1439 } 1440 copied++; 1441 } 1442 } else { 1443 for (i = 0; i < mode_group->num_crtcs; i++) { 1444 if (put_user(mode_group->id_list[i], 1445 crtc_id + copied)) { 1446 ret = -EFAULT; 1447 goto out; 1448 } 1449 copied++; 1450 } 1451 } 1452 } 1453 card_res->count_crtcs = crtc_count; 1454 1455 /* Encoders */ 1456 if (card_res->count_encoders >= encoder_count) { 1457 copied = 0; 1458 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; 1459 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1460 list_for_each_entry(encoder, 1461 &dev->mode_config.encoder_list, 1462 head) { 1463 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, 1464 drm_get_encoder_name(encoder)); 1465 if (put_user(encoder->base.id, encoder_id + 1466 copied)) { 1467 ret = -EFAULT; 1468 goto out; 1469 } 1470 copied++; 1471 } 1472 } else { 1473 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { 1474 if (put_user(mode_group->id_list[i], 1475 encoder_id + copied)) { 1476 ret = -EFAULT; 1477 goto out; 1478 } 1479 copied++; 1480 } 1481 1482 } 1483 } 1484 card_res->count_encoders = encoder_count; 1485 1486 /* Connectors */ 1487 if (card_res->count_connectors >= connector_count) { 1488 copied = 0; 1489 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; 1490 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1491 list_for_each_entry(connector, 1492 &dev->mode_config.connector_list, 1493 head) { 1494 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 1495 connector->base.id, 1496 drm_get_connector_name(connector)); 1497 if (put_user(connector->base.id, 1498 connector_id + copied)) { 1499 ret = -EFAULT; 1500 goto out; 1501 } 1502 copied++; 1503 } 1504 } else { 1505 int start = mode_group->num_crtcs + 1506 mode_group->num_encoders; 1507 for (i = start; i < start + mode_group->num_connectors; i++) { 1508 if (put_user(mode_group->id_list[i], 1509 connector_id + copied)) { 1510 ret = -EFAULT; 1511 goto out; 1512 } 1513 copied++; 1514 } 1515 } 1516 } 1517 card_res->count_connectors = connector_count; 1518 1519 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, 1520 card_res->count_connectors, card_res->count_encoders); 1521 1522 out: 1523 drm_modeset_unlock_all(dev); 1524 return ret; 1525 } 1526 1527 /** 1528 * drm_mode_getcrtc - get CRTC configuration 1529 * @dev: drm device for the ioctl 1530 * @data: data pointer for the ioctl 1531 * @file_priv: drm file for the ioctl call 1532 * 1533 * Construct a CRTC configuration structure to return to the user. 1534 * 1535 * Called by the user via ioctl. 1536 * 1537 * RETURNS: 1538 * Zero on success, errno on failure. 1539 */ 1540 int drm_mode_getcrtc(struct drm_device *dev, 1541 void *data, struct drm_file *file_priv) 1542 { 1543 struct drm_mode_crtc *crtc_resp = data; 1544 struct drm_crtc *crtc; 1545 struct drm_mode_object *obj; 1546 int ret = 0; 1547 1548 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1549 return -EINVAL; 1550 1551 drm_modeset_lock_all(dev); 1552 1553 obj = drm_mode_object_find(dev, crtc_resp->crtc_id, 1554 DRM_MODE_OBJECT_CRTC); 1555 if (!obj) { 1556 ret = -EINVAL; 1557 goto out; 1558 } 1559 crtc = obj_to_crtc(obj); 1560 1561 crtc_resp->x = crtc->x; 1562 crtc_resp->y = crtc->y; 1563 crtc_resp->gamma_size = crtc->gamma_size; 1564 if (crtc->fb) 1565 crtc_resp->fb_id = crtc->fb->base.id; 1566 else 1567 crtc_resp->fb_id = 0; 1568 1569 if (crtc->enabled) { 1570 1571 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); 1572 crtc_resp->mode_valid = 1; 1573 1574 } else { 1575 crtc_resp->mode_valid = 0; 1576 } 1577 1578 out: 1579 drm_modeset_unlock_all(dev); 1580 return ret; 1581 } 1582 1583 /** 1584 * drm_mode_getconnector - get connector configuration 1585 * @dev: drm device for the ioctl 1586 * @data: data pointer for the ioctl 1587 * @file_priv: drm file for the ioctl call 1588 * 1589 * Construct a connector configuration structure to return to the user. 1590 * 1591 * Called by the user via ioctl. 1592 * 1593 * RETURNS: 1594 * Zero on success, errno on failure. 1595 */ 1596 int drm_mode_getconnector(struct drm_device *dev, void *data, 1597 struct drm_file *file_priv) 1598 { 1599 struct drm_mode_get_connector *out_resp = data; 1600 struct drm_mode_object *obj; 1601 struct drm_connector *connector; 1602 struct drm_display_mode *mode; 1603 int mode_count = 0; 1604 int props_count = 0; 1605 int encoders_count = 0; 1606 int ret = 0; 1607 int copied = 0; 1608 int i; 1609 struct drm_mode_modeinfo u_mode; 1610 struct drm_mode_modeinfo __user *mode_ptr; 1611 uint32_t __user *prop_ptr; 1612 uint64_t __user *prop_values; 1613 uint32_t __user *encoder_ptr; 1614 1615 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1616 return -EINVAL; 1617 1618 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); 1619 1620 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); 1621 1622 mutex_lock(&dev->mode_config.mutex); 1623 1624 obj = drm_mode_object_find(dev, out_resp->connector_id, 1625 DRM_MODE_OBJECT_CONNECTOR); 1626 if (!obj) { 1627 ret = -EINVAL; 1628 goto out; 1629 } 1630 connector = obj_to_connector(obj); 1631 1632 props_count = connector->properties.count; 1633 1634 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1635 if (connector->encoder_ids[i] != 0) { 1636 encoders_count++; 1637 } 1638 } 1639 1640 if (out_resp->count_modes == 0) { 1641 connector->funcs->fill_modes(connector, 1642 dev->mode_config.max_width, 1643 dev->mode_config.max_height); 1644 } 1645 1646 /* delayed so we get modes regardless of pre-fill_modes state */ 1647 list_for_each_entry(mode, &connector->modes, head) 1648 mode_count++; 1649 1650 out_resp->connector_id = connector->base.id; 1651 out_resp->connector_type = connector->connector_type; 1652 out_resp->connector_type_id = connector->connector_type_id; 1653 out_resp->mm_width = connector->display_info.width_mm; 1654 out_resp->mm_height = connector->display_info.height_mm; 1655 out_resp->subpixel = connector->display_info.subpixel_order; 1656 out_resp->connection = connector->status; 1657 if (connector->encoder) 1658 out_resp->encoder_id = connector->encoder->base.id; 1659 else 1660 out_resp->encoder_id = 0; 1661 1662 /* 1663 * This ioctl is called twice, once to determine how much space is 1664 * needed, and the 2nd time to fill it. 1665 */ 1666 if ((out_resp->count_modes >= mode_count) && mode_count) { 1667 copied = 0; 1668 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; 1669 list_for_each_entry(mode, &connector->modes, head) { 1670 drm_crtc_convert_to_umode(&u_mode, mode); 1671 if (copy_to_user(mode_ptr + copied, 1672 &u_mode, sizeof(u_mode))) { 1673 ret = -EFAULT; 1674 goto out; 1675 } 1676 copied++; 1677 } 1678 } 1679 out_resp->count_modes = mode_count; 1680 1681 if ((out_resp->count_props >= props_count) && props_count) { 1682 copied = 0; 1683 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); 1684 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); 1685 for (i = 0; i < connector->properties.count; i++) { 1686 if (put_user(connector->properties.ids[i], 1687 prop_ptr + copied)) { 1688 ret = -EFAULT; 1689 goto out; 1690 } 1691 1692 if (put_user(connector->properties.values[i], 1693 prop_values + copied)) { 1694 ret = -EFAULT; 1695 goto out; 1696 } 1697 copied++; 1698 } 1699 } 1700 out_resp->count_props = props_count; 1701 1702 if ((out_resp->count_encoders >= encoders_count) && encoders_count) { 1703 copied = 0; 1704 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); 1705 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1706 if (connector->encoder_ids[i] != 0) { 1707 if (put_user(connector->encoder_ids[i], 1708 encoder_ptr + copied)) { 1709 ret = -EFAULT; 1710 goto out; 1711 } 1712 copied++; 1713 } 1714 } 1715 } 1716 out_resp->count_encoders = encoders_count; 1717 1718 out: 1719 mutex_unlock(&dev->mode_config.mutex); 1720 1721 return ret; 1722 } 1723 1724 int drm_mode_getencoder(struct drm_device *dev, void *data, 1725 struct drm_file *file_priv) 1726 { 1727 struct drm_mode_get_encoder *enc_resp = data; 1728 struct drm_mode_object *obj; 1729 struct drm_encoder *encoder; 1730 int ret = 0; 1731 1732 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1733 return -EINVAL; 1734 1735 drm_modeset_lock_all(dev); 1736 obj = drm_mode_object_find(dev, enc_resp->encoder_id, 1737 DRM_MODE_OBJECT_ENCODER); 1738 if (!obj) { 1739 ret = -EINVAL; 1740 goto out; 1741 } 1742 encoder = obj_to_encoder(obj); 1743 1744 if (encoder->crtc) 1745 enc_resp->crtc_id = encoder->crtc->base.id; 1746 else 1747 enc_resp->crtc_id = 0; 1748 enc_resp->encoder_type = encoder->encoder_type; 1749 enc_resp->encoder_id = encoder->base.id; 1750 enc_resp->possible_crtcs = encoder->possible_crtcs; 1751 enc_resp->possible_clones = encoder->possible_clones; 1752 1753 out: 1754 drm_modeset_unlock_all(dev); 1755 return ret; 1756 } 1757 1758 /** 1759 * drm_mode_getplane_res - get plane info 1760 * @dev: DRM device 1761 * @data: ioctl data 1762 * @file_priv: DRM file info 1763 * 1764 * Return an plane count and set of IDs. 1765 */ 1766 int drm_mode_getplane_res(struct drm_device *dev, void *data, 1767 struct drm_file *file_priv) 1768 { 1769 struct drm_mode_get_plane_res *plane_resp = data; 1770 struct drm_mode_config *config; 1771 struct drm_plane *plane; 1772 uint32_t __user *plane_ptr; 1773 int copied = 0, ret = 0; 1774 1775 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1776 return -EINVAL; 1777 1778 drm_modeset_lock_all(dev); 1779 config = &dev->mode_config; 1780 1781 /* 1782 * This ioctl is called twice, once to determine how much space is 1783 * needed, and the 2nd time to fill it. 1784 */ 1785 if (config->num_plane && 1786 (plane_resp->count_planes >= config->num_plane)) { 1787 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; 1788 1789 list_for_each_entry(plane, &config->plane_list, head) { 1790 if (put_user(plane->base.id, plane_ptr + copied)) { 1791 ret = -EFAULT; 1792 goto out; 1793 } 1794 copied++; 1795 } 1796 } 1797 plane_resp->count_planes = config->num_plane; 1798 1799 out: 1800 drm_modeset_unlock_all(dev); 1801 return ret; 1802 } 1803 1804 /** 1805 * drm_mode_getplane - get plane info 1806 * @dev: DRM device 1807 * @data: ioctl data 1808 * @file_priv: DRM file info 1809 * 1810 * Return plane info, including formats supported, gamma size, any 1811 * current fb, etc. 1812 */ 1813 int drm_mode_getplane(struct drm_device *dev, void *data, 1814 struct drm_file *file_priv) 1815 { 1816 struct drm_mode_get_plane *plane_resp = data; 1817 struct drm_mode_object *obj; 1818 struct drm_plane *plane; 1819 uint32_t __user *format_ptr; 1820 int ret = 0; 1821 1822 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1823 return -EINVAL; 1824 1825 drm_modeset_lock_all(dev); 1826 obj = drm_mode_object_find(dev, plane_resp->plane_id, 1827 DRM_MODE_OBJECT_PLANE); 1828 if (!obj) { 1829 ret = -ENOENT; 1830 goto out; 1831 } 1832 plane = obj_to_plane(obj); 1833 1834 if (plane->crtc) 1835 plane_resp->crtc_id = plane->crtc->base.id; 1836 else 1837 plane_resp->crtc_id = 0; 1838 1839 if (plane->fb) 1840 plane_resp->fb_id = plane->fb->base.id; 1841 else 1842 plane_resp->fb_id = 0; 1843 1844 plane_resp->plane_id = plane->base.id; 1845 plane_resp->possible_crtcs = plane->possible_crtcs; 1846 plane_resp->gamma_size = plane->gamma_size; 1847 1848 /* 1849 * This ioctl is called twice, once to determine how much space is 1850 * needed, and the 2nd time to fill it. 1851 */ 1852 if (plane->format_count && 1853 (plane_resp->count_format_types >= plane->format_count)) { 1854 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; 1855 if (copy_to_user(format_ptr, 1856 plane->format_types, 1857 sizeof(uint32_t) * plane->format_count)) { 1858 ret = -EFAULT; 1859 goto out; 1860 } 1861 } 1862 plane_resp->count_format_types = plane->format_count; 1863 1864 out: 1865 drm_modeset_unlock_all(dev); 1866 return ret; 1867 } 1868 1869 /** 1870 * drm_mode_setplane - set up or tear down an plane 1871 * @dev: DRM device 1872 * @data: ioctl data* 1873 * @file_priv: DRM file info 1874 * 1875 * Set plane info, including placement, fb, scaling, and other factors. 1876 * Or pass a NULL fb to disable. 1877 */ 1878 int drm_mode_setplane(struct drm_device *dev, void *data, 1879 struct drm_file *file_priv) 1880 { 1881 struct drm_mode_set_plane *plane_req = data; 1882 struct drm_mode_object *obj; 1883 struct drm_plane *plane; 1884 struct drm_crtc *crtc; 1885 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 1886 int ret = 0; 1887 unsigned int fb_width, fb_height; 1888 int i; 1889 1890 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1891 return -EINVAL; 1892 1893 /* 1894 * First, find the plane, crtc, and fb objects. If not available, 1895 * we don't bother to call the driver. 1896 */ 1897 obj = drm_mode_object_find(dev, plane_req->plane_id, 1898 DRM_MODE_OBJECT_PLANE); 1899 if (!obj) { 1900 DRM_DEBUG_KMS("Unknown plane ID %d\n", 1901 plane_req->plane_id); 1902 return -ENOENT; 1903 } 1904 plane = obj_to_plane(obj); 1905 1906 /* No fb means shut it down */ 1907 if (!plane_req->fb_id) { 1908 drm_modeset_lock_all(dev); 1909 old_fb = plane->fb; 1910 plane->funcs->disable_plane(plane); 1911 plane->crtc = NULL; 1912 plane->fb = NULL; 1913 drm_modeset_unlock_all(dev); 1914 goto out; 1915 } 1916 1917 obj = drm_mode_object_find(dev, plane_req->crtc_id, 1918 DRM_MODE_OBJECT_CRTC); 1919 if (!obj) { 1920 DRM_DEBUG_KMS("Unknown crtc ID %d\n", 1921 plane_req->crtc_id); 1922 ret = -ENOENT; 1923 goto out; 1924 } 1925 crtc = obj_to_crtc(obj); 1926 1927 fb = drm_framebuffer_lookup(dev, plane_req->fb_id); 1928 if (!fb) { 1929 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", 1930 plane_req->fb_id); 1931 ret = -ENOENT; 1932 goto out; 1933 } 1934 1935 /* Check whether this plane supports the fb pixel format. */ 1936 for (i = 0; i < plane->format_count; i++) 1937 if (fb->pixel_format == plane->format_types[i]) 1938 break; 1939 if (i == plane->format_count) { 1940 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format); 1941 ret = -EINVAL; 1942 goto out; 1943 } 1944 1945 fb_width = fb->width << 16; 1946 fb_height = fb->height << 16; 1947 1948 /* Make sure source coordinates are inside the fb. */ 1949 if (plane_req->src_w > fb_width || 1950 plane_req->src_x > fb_width - plane_req->src_w || 1951 plane_req->src_h > fb_height || 1952 plane_req->src_y > fb_height - plane_req->src_h) { 1953 DRM_DEBUG_KMS("Invalid source coordinates " 1954 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", 1955 plane_req->src_w >> 16, 1956 ((plane_req->src_w & 0xffff) * 15625) >> 10, 1957 plane_req->src_h >> 16, 1958 ((plane_req->src_h & 0xffff) * 15625) >> 10, 1959 plane_req->src_x >> 16, 1960 ((plane_req->src_x & 0xffff) * 15625) >> 10, 1961 plane_req->src_y >> 16, 1962 ((plane_req->src_y & 0xffff) * 15625) >> 10); 1963 ret = -ENOSPC; 1964 goto out; 1965 } 1966 1967 /* Give drivers some help against integer overflows */ 1968 if (plane_req->crtc_w > INT_MAX || 1969 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || 1970 plane_req->crtc_h > INT_MAX || 1971 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { 1972 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", 1973 plane_req->crtc_w, plane_req->crtc_h, 1974 plane_req->crtc_x, plane_req->crtc_y); 1975 ret = -ERANGE; 1976 goto out; 1977 } 1978 1979 drm_modeset_lock_all(dev); 1980 ret = plane->funcs->update_plane(plane, crtc, fb, 1981 plane_req->crtc_x, plane_req->crtc_y, 1982 plane_req->crtc_w, plane_req->crtc_h, 1983 plane_req->src_x, plane_req->src_y, 1984 plane_req->src_w, plane_req->src_h); 1985 if (!ret) { 1986 old_fb = plane->fb; 1987 plane->crtc = crtc; 1988 plane->fb = fb; 1989 fb = NULL; 1990 } 1991 drm_modeset_unlock_all(dev); 1992 1993 out: 1994 if (fb) 1995 drm_framebuffer_unreference(fb); 1996 if (old_fb) 1997 drm_framebuffer_unreference(old_fb); 1998 1999 return ret; 2000 } 2001 2002 /** 2003 * drm_mode_set_config_internal - helper to call ->set_config 2004 * @set: modeset config to set 2005 * 2006 * This is a little helper to wrap internal calls to the ->set_config driver 2007 * interface. The only thing it adds is correct refcounting dance. 2008 */ 2009 int drm_mode_set_config_internal(struct drm_mode_set *set) 2010 { 2011 struct drm_crtc *crtc = set->crtc; 2012 struct drm_framebuffer *fb, *old_fb; 2013 int ret; 2014 2015 old_fb = crtc->fb; 2016 fb = set->fb; 2017 2018 ret = crtc->funcs->set_config(set); 2019 if (ret == 0) { 2020 if (old_fb) 2021 drm_framebuffer_unreference(old_fb); 2022 if (fb) 2023 drm_framebuffer_reference(fb); 2024 } 2025 2026 return ret; 2027 } 2028 EXPORT_SYMBOL(drm_mode_set_config_internal); 2029 2030 /** 2031 * drm_mode_setcrtc - set CRTC configuration 2032 * @dev: drm device for the ioctl 2033 * @data: data pointer for the ioctl 2034 * @file_priv: drm file for the ioctl call 2035 * 2036 * Build a new CRTC configuration based on user request. 2037 * 2038 * Called by the user via ioctl. 2039 * 2040 * RETURNS: 2041 * Zero on success, errno on failure. 2042 */ 2043 int drm_mode_setcrtc(struct drm_device *dev, void *data, 2044 struct drm_file *file_priv) 2045 { 2046 struct drm_mode_config *config = &dev->mode_config; 2047 struct drm_mode_crtc *crtc_req = data; 2048 struct drm_mode_object *obj; 2049 struct drm_crtc *crtc; 2050 struct drm_connector **connector_set = NULL, *connector; 2051 struct drm_framebuffer *fb = NULL; 2052 struct drm_display_mode *mode = NULL; 2053 struct drm_mode_set set; 2054 uint32_t __user *set_connectors_ptr; 2055 int ret; 2056 int i; 2057 2058 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2059 return -EINVAL; 2060 2061 /* For some reason crtc x/y offsets are signed internally. */ 2062 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) 2063 return -ERANGE; 2064 2065 drm_modeset_lock_all(dev); 2066 obj = drm_mode_object_find(dev, crtc_req->crtc_id, 2067 DRM_MODE_OBJECT_CRTC); 2068 if (!obj) { 2069 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 2070 ret = -EINVAL; 2071 goto out; 2072 } 2073 crtc = obj_to_crtc(obj); 2074 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 2075 2076 if (crtc_req->mode_valid) { 2077 int hdisplay, vdisplay; 2078 /* If we have a mode we need a framebuffer. */ 2079 /* If we pass -1, set the mode with the currently bound fb */ 2080 if (crtc_req->fb_id == -1) { 2081 if (!crtc->fb) { 2082 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 2083 ret = -EINVAL; 2084 goto out; 2085 } 2086 fb = crtc->fb; 2087 /* Make refcounting symmetric with the lookup path. */ 2088 drm_framebuffer_reference(fb); 2089 } else { 2090 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); 2091 if (!fb) { 2092 DRM_DEBUG_KMS("Unknown FB ID%d\n", 2093 crtc_req->fb_id); 2094 ret = -EINVAL; 2095 goto out; 2096 } 2097 } 2098 2099 mode = drm_mode_create(dev); 2100 if (!mode) { 2101 ret = -ENOMEM; 2102 goto out; 2103 } 2104 2105 ret = drm_crtc_convert_umode(mode, &crtc_req->mode); 2106 if (ret) { 2107 DRM_DEBUG_KMS("Invalid mode\n"); 2108 goto out; 2109 } 2110 2111 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 2112 2113 hdisplay = mode->hdisplay; 2114 vdisplay = mode->vdisplay; 2115 2116 if (crtc->invert_dimensions) 2117 swap(hdisplay, vdisplay); 2118 2119 if (hdisplay > fb->width || 2120 vdisplay > fb->height || 2121 crtc_req->x > fb->width - hdisplay || 2122 crtc_req->y > fb->height - vdisplay) { 2123 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 2124 fb->width, fb->height, 2125 hdisplay, vdisplay, crtc_req->x, crtc_req->y, 2126 crtc->invert_dimensions ? " (inverted)" : ""); 2127 ret = -ENOSPC; 2128 goto out; 2129 } 2130 } 2131 2132 if (crtc_req->count_connectors == 0 && mode) { 2133 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 2134 ret = -EINVAL; 2135 goto out; 2136 } 2137 2138 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 2139 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 2140 crtc_req->count_connectors); 2141 ret = -EINVAL; 2142 goto out; 2143 } 2144 2145 if (crtc_req->count_connectors > 0) { 2146 u32 out_id; 2147 2148 /* Avoid unbounded kernel memory allocation */ 2149 if (crtc_req->count_connectors > config->num_connector) { 2150 ret = -EINVAL; 2151 goto out; 2152 } 2153 2154 connector_set = kmalloc(crtc_req->count_connectors * 2155 sizeof(struct drm_connector *), 2156 GFP_KERNEL); 2157 if (!connector_set) { 2158 ret = -ENOMEM; 2159 goto out; 2160 } 2161 2162 for (i = 0; i < crtc_req->count_connectors; i++) { 2163 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 2164 if (get_user(out_id, &set_connectors_ptr[i])) { 2165 ret = -EFAULT; 2166 goto out; 2167 } 2168 2169 obj = drm_mode_object_find(dev, out_id, 2170 DRM_MODE_OBJECT_CONNECTOR); 2171 if (!obj) { 2172 DRM_DEBUG_KMS("Connector id %d unknown\n", 2173 out_id); 2174 ret = -EINVAL; 2175 goto out; 2176 } 2177 connector = obj_to_connector(obj); 2178 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 2179 connector->base.id, 2180 drm_get_connector_name(connector)); 2181 2182 connector_set[i] = connector; 2183 } 2184 } 2185 2186 set.crtc = crtc; 2187 set.x = crtc_req->x; 2188 set.y = crtc_req->y; 2189 set.mode = mode; 2190 set.connectors = connector_set; 2191 set.num_connectors = crtc_req->count_connectors; 2192 set.fb = fb; 2193 ret = drm_mode_set_config_internal(&set); 2194 2195 out: 2196 if (fb) 2197 drm_framebuffer_unreference(fb); 2198 2199 kfree(connector_set); 2200 drm_mode_destroy(dev, mode); 2201 drm_modeset_unlock_all(dev); 2202 return ret; 2203 } 2204 2205 int drm_mode_cursor_ioctl(struct drm_device *dev, 2206 void *data, struct drm_file *file_priv) 2207 { 2208 struct drm_mode_cursor *req = data; 2209 struct drm_mode_object *obj; 2210 struct drm_crtc *crtc; 2211 int ret = 0; 2212 2213 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2214 return -EINVAL; 2215 2216 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) 2217 return -EINVAL; 2218 2219 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); 2220 if (!obj) { 2221 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); 2222 return -EINVAL; 2223 } 2224 crtc = obj_to_crtc(obj); 2225 2226 mutex_lock(&crtc->mutex); 2227 if (req->flags & DRM_MODE_CURSOR_BO) { 2228 if (!crtc->funcs->cursor_set) { 2229 ret = -ENXIO; 2230 goto out; 2231 } 2232 /* Turns off the cursor if handle is 0 */ 2233 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, 2234 req->width, req->height); 2235 } 2236 2237 if (req->flags & DRM_MODE_CURSOR_MOVE) { 2238 if (crtc->funcs->cursor_move) { 2239 ret = crtc->funcs->cursor_move(crtc, req->x, req->y); 2240 } else { 2241 ret = -EFAULT; 2242 goto out; 2243 } 2244 } 2245 out: 2246 mutex_unlock(&crtc->mutex); 2247 2248 return ret; 2249 } 2250 2251 /* Original addfb only supported RGB formats, so figure out which one */ 2252 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 2253 { 2254 uint32_t fmt; 2255 2256 switch (bpp) { 2257 case 8: 2258 fmt = DRM_FORMAT_C8; 2259 break; 2260 case 16: 2261 if (depth == 15) 2262 fmt = DRM_FORMAT_XRGB1555; 2263 else 2264 fmt = DRM_FORMAT_RGB565; 2265 break; 2266 case 24: 2267 fmt = DRM_FORMAT_RGB888; 2268 break; 2269 case 32: 2270 if (depth == 24) 2271 fmt = DRM_FORMAT_XRGB8888; 2272 else if (depth == 30) 2273 fmt = DRM_FORMAT_XRGB2101010; 2274 else 2275 fmt = DRM_FORMAT_ARGB8888; 2276 break; 2277 default: 2278 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); 2279 fmt = DRM_FORMAT_XRGB8888; 2280 break; 2281 } 2282 2283 return fmt; 2284 } 2285 EXPORT_SYMBOL(drm_mode_legacy_fb_format); 2286 2287 /** 2288 * drm_mode_addfb - add an FB to the graphics configuration 2289 * @dev: drm device for the ioctl 2290 * @data: data pointer for the ioctl 2291 * @file_priv: drm file for the ioctl call 2292 * 2293 * Add a new FB to the specified CRTC, given a user request. 2294 * 2295 * Called by the user via ioctl. 2296 * 2297 * RETURNS: 2298 * Zero on success, errno on failure. 2299 */ 2300 int drm_mode_addfb(struct drm_device *dev, 2301 void *data, struct drm_file *file_priv) 2302 { 2303 struct drm_mode_fb_cmd *or = data; 2304 struct drm_mode_fb_cmd2 r = {}; 2305 struct drm_mode_config *config = &dev->mode_config; 2306 struct drm_framebuffer *fb; 2307 int ret = 0; 2308 2309 /* Use new struct with format internally */ 2310 r.fb_id = or->fb_id; 2311 r.width = or->width; 2312 r.height = or->height; 2313 r.pitches[0] = or->pitch; 2314 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); 2315 r.handles[0] = or->handle; 2316 2317 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2318 return -EINVAL; 2319 2320 if ((config->min_width > r.width) || (r.width > config->max_width)) 2321 return -EINVAL; 2322 2323 if ((config->min_height > r.height) || (r.height > config->max_height)) 2324 return -EINVAL; 2325 2326 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); 2327 if (IS_ERR(fb)) { 2328 DRM_DEBUG_KMS("could not create framebuffer\n"); 2329 return PTR_ERR(fb); 2330 } 2331 2332 mutex_lock(&file_priv->fbs_lock); 2333 or->fb_id = fb->base.id; 2334 list_add(&fb->filp_head, &file_priv->fbs); 2335 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2336 mutex_unlock(&file_priv->fbs_lock); 2337 2338 return ret; 2339 } 2340 2341 static int format_check(const struct drm_mode_fb_cmd2 *r) 2342 { 2343 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; 2344 2345 switch (format) { 2346 case DRM_FORMAT_C8: 2347 case DRM_FORMAT_RGB332: 2348 case DRM_FORMAT_BGR233: 2349 case DRM_FORMAT_XRGB4444: 2350 case DRM_FORMAT_XBGR4444: 2351 case DRM_FORMAT_RGBX4444: 2352 case DRM_FORMAT_BGRX4444: 2353 case DRM_FORMAT_ARGB4444: 2354 case DRM_FORMAT_ABGR4444: 2355 case DRM_FORMAT_RGBA4444: 2356 case DRM_FORMAT_BGRA4444: 2357 case DRM_FORMAT_XRGB1555: 2358 case DRM_FORMAT_XBGR1555: 2359 case DRM_FORMAT_RGBX5551: 2360 case DRM_FORMAT_BGRX5551: 2361 case DRM_FORMAT_ARGB1555: 2362 case DRM_FORMAT_ABGR1555: 2363 case DRM_FORMAT_RGBA5551: 2364 case DRM_FORMAT_BGRA5551: 2365 case DRM_FORMAT_RGB565: 2366 case DRM_FORMAT_BGR565: 2367 case DRM_FORMAT_RGB888: 2368 case DRM_FORMAT_BGR888: 2369 case DRM_FORMAT_XRGB8888: 2370 case DRM_FORMAT_XBGR8888: 2371 case DRM_FORMAT_RGBX8888: 2372 case DRM_FORMAT_BGRX8888: 2373 case DRM_FORMAT_ARGB8888: 2374 case DRM_FORMAT_ABGR8888: 2375 case DRM_FORMAT_RGBA8888: 2376 case DRM_FORMAT_BGRA8888: 2377 case DRM_FORMAT_XRGB2101010: 2378 case DRM_FORMAT_XBGR2101010: 2379 case DRM_FORMAT_RGBX1010102: 2380 case DRM_FORMAT_BGRX1010102: 2381 case DRM_FORMAT_ARGB2101010: 2382 case DRM_FORMAT_ABGR2101010: 2383 case DRM_FORMAT_RGBA1010102: 2384 case DRM_FORMAT_BGRA1010102: 2385 case DRM_FORMAT_YUYV: 2386 case DRM_FORMAT_YVYU: 2387 case DRM_FORMAT_UYVY: 2388 case DRM_FORMAT_VYUY: 2389 case DRM_FORMAT_AYUV: 2390 case DRM_FORMAT_NV12: 2391 case DRM_FORMAT_NV21: 2392 case DRM_FORMAT_NV16: 2393 case DRM_FORMAT_NV61: 2394 case DRM_FORMAT_NV24: 2395 case DRM_FORMAT_NV42: 2396 case DRM_FORMAT_YUV410: 2397 case DRM_FORMAT_YVU410: 2398 case DRM_FORMAT_YUV411: 2399 case DRM_FORMAT_YVU411: 2400 case DRM_FORMAT_YUV420: 2401 case DRM_FORMAT_YVU420: 2402 case DRM_FORMAT_YUV422: 2403 case DRM_FORMAT_YVU422: 2404 case DRM_FORMAT_YUV444: 2405 case DRM_FORMAT_YVU444: 2406 return 0; 2407 default: 2408 return -EINVAL; 2409 } 2410 } 2411 2412 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) 2413 { 2414 int ret, hsub, vsub, num_planes, i; 2415 2416 ret = format_check(r); 2417 if (ret) { 2418 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format); 2419 return ret; 2420 } 2421 2422 hsub = drm_format_horz_chroma_subsampling(r->pixel_format); 2423 vsub = drm_format_vert_chroma_subsampling(r->pixel_format); 2424 num_planes = drm_format_num_planes(r->pixel_format); 2425 2426 if (r->width == 0 || r->width % hsub) { 2427 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height); 2428 return -EINVAL; 2429 } 2430 2431 if (r->height == 0 || r->height % vsub) { 2432 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); 2433 return -EINVAL; 2434 } 2435 2436 for (i = 0; i < num_planes; i++) { 2437 unsigned int width = r->width / (i != 0 ? hsub : 1); 2438 unsigned int height = r->height / (i != 0 ? vsub : 1); 2439 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); 2440 2441 if (!r->handles[i]) { 2442 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); 2443 return -EINVAL; 2444 } 2445 2446 if ((uint64_t) width * cpp > UINT_MAX) 2447 return -ERANGE; 2448 2449 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) 2450 return -ERANGE; 2451 2452 if (r->pitches[i] < width * cpp) { 2453 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); 2454 return -EINVAL; 2455 } 2456 } 2457 2458 return 0; 2459 } 2460 2461 /** 2462 * drm_mode_addfb2 - add an FB to the graphics configuration 2463 * @dev: drm device for the ioctl 2464 * @data: data pointer for the ioctl 2465 * @file_priv: drm file for the ioctl call 2466 * 2467 * Add a new FB to the specified CRTC, given a user request with format. 2468 * 2469 * Called by the user via ioctl. 2470 * 2471 * RETURNS: 2472 * Zero on success, errno on failure. 2473 */ 2474 int drm_mode_addfb2(struct drm_device *dev, 2475 void *data, struct drm_file *file_priv) 2476 { 2477 struct drm_mode_fb_cmd2 *r = data; 2478 struct drm_mode_config *config = &dev->mode_config; 2479 struct drm_framebuffer *fb; 2480 int ret; 2481 2482 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2483 return -EINVAL; 2484 2485 if (r->flags & ~DRM_MODE_FB_INTERLACED) { 2486 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); 2487 return -EINVAL; 2488 } 2489 2490 if ((config->min_width > r->width) || (r->width > config->max_width)) { 2491 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", 2492 r->width, config->min_width, config->max_width); 2493 return -EINVAL; 2494 } 2495 if ((config->min_height > r->height) || (r->height > config->max_height)) { 2496 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", 2497 r->height, config->min_height, config->max_height); 2498 return -EINVAL; 2499 } 2500 2501 ret = framebuffer_check(r); 2502 if (ret) 2503 return ret; 2504 2505 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 2506 if (IS_ERR(fb)) { 2507 DRM_DEBUG_KMS("could not create framebuffer\n"); 2508 return PTR_ERR(fb); 2509 } 2510 2511 mutex_lock(&file_priv->fbs_lock); 2512 r->fb_id = fb->base.id; 2513 list_add(&fb->filp_head, &file_priv->fbs); 2514 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2515 mutex_unlock(&file_priv->fbs_lock); 2516 2517 2518 return ret; 2519 } 2520 2521 /** 2522 * drm_mode_rmfb - remove an FB from the configuration 2523 * @dev: drm device for the ioctl 2524 * @data: data pointer for the ioctl 2525 * @file_priv: drm file for the ioctl call 2526 * 2527 * Remove the FB specified by the user. 2528 * 2529 * Called by the user via ioctl. 2530 * 2531 * RETURNS: 2532 * Zero on success, errno on failure. 2533 */ 2534 int drm_mode_rmfb(struct drm_device *dev, 2535 void *data, struct drm_file *file_priv) 2536 { 2537 struct drm_framebuffer *fb = NULL; 2538 struct drm_framebuffer *fbl = NULL; 2539 uint32_t *id = data; 2540 int found = 0; 2541 2542 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2543 return -EINVAL; 2544 2545 mutex_lock(&file_priv->fbs_lock); 2546 mutex_lock(&dev->mode_config.fb_lock); 2547 fb = __drm_framebuffer_lookup(dev, *id); 2548 if (!fb) 2549 goto fail_lookup; 2550 2551 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 2552 if (fb == fbl) 2553 found = 1; 2554 if (!found) 2555 goto fail_lookup; 2556 2557 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2558 __drm_framebuffer_unregister(dev, fb); 2559 2560 list_del_init(&fb->filp_head); 2561 mutex_unlock(&dev->mode_config.fb_lock); 2562 mutex_unlock(&file_priv->fbs_lock); 2563 2564 drm_framebuffer_remove(fb); 2565 2566 return 0; 2567 2568 fail_lookup: 2569 mutex_unlock(&dev->mode_config.fb_lock); 2570 mutex_unlock(&file_priv->fbs_lock); 2571 2572 return -EINVAL; 2573 } 2574 2575 /** 2576 * drm_mode_getfb - get FB info 2577 * @dev: drm device for the ioctl 2578 * @data: data pointer for the ioctl 2579 * @file_priv: drm file for the ioctl call 2580 * 2581 * Lookup the FB given its ID and return info about it. 2582 * 2583 * Called by the user via ioctl. 2584 * 2585 * RETURNS: 2586 * Zero on success, errno on failure. 2587 */ 2588 int drm_mode_getfb(struct drm_device *dev, 2589 void *data, struct drm_file *file_priv) 2590 { 2591 struct drm_mode_fb_cmd *r = data; 2592 struct drm_framebuffer *fb; 2593 int ret; 2594 2595 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2596 return -EINVAL; 2597 2598 fb = drm_framebuffer_lookup(dev, r->fb_id); 2599 if (!fb) 2600 return -EINVAL; 2601 2602 r->height = fb->height; 2603 r->width = fb->width; 2604 r->depth = fb->depth; 2605 r->bpp = fb->bits_per_pixel; 2606 r->pitch = fb->pitches[0]; 2607 if (fb->funcs->create_handle) 2608 ret = fb->funcs->create_handle(fb, file_priv, &r->handle); 2609 else 2610 ret = -ENODEV; 2611 2612 drm_framebuffer_unreference(fb); 2613 2614 return ret; 2615 } 2616 2617 int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 2618 void *data, struct drm_file *file_priv) 2619 { 2620 struct drm_clip_rect __user *clips_ptr; 2621 struct drm_clip_rect *clips = NULL; 2622 struct drm_mode_fb_dirty_cmd *r = data; 2623 struct drm_framebuffer *fb; 2624 unsigned flags; 2625 int num_clips; 2626 int ret; 2627 2628 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2629 return -EINVAL; 2630 2631 fb = drm_framebuffer_lookup(dev, r->fb_id); 2632 if (!fb) 2633 return -EINVAL; 2634 2635 num_clips = r->num_clips; 2636 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; 2637 2638 if (!num_clips != !clips_ptr) { 2639 ret = -EINVAL; 2640 goto out_err1; 2641 } 2642 2643 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; 2644 2645 /* If userspace annotates copy, clips must come in pairs */ 2646 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { 2647 ret = -EINVAL; 2648 goto out_err1; 2649 } 2650 2651 if (num_clips && clips_ptr) { 2652 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { 2653 ret = -EINVAL; 2654 goto out_err1; 2655 } 2656 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 2657 if (!clips) { 2658 ret = -ENOMEM; 2659 goto out_err1; 2660 } 2661 2662 ret = copy_from_user(clips, clips_ptr, 2663 num_clips * sizeof(*clips)); 2664 if (ret) { 2665 ret = -EFAULT; 2666 goto out_err2; 2667 } 2668 } 2669 2670 if (fb->funcs->dirty) { 2671 drm_modeset_lock_all(dev); 2672 ret = fb->funcs->dirty(fb, file_priv, flags, r->color, 2673 clips, num_clips); 2674 drm_modeset_unlock_all(dev); 2675 } else { 2676 ret = -ENOSYS; 2677 } 2678 2679 out_err2: 2680 kfree(clips); 2681 out_err1: 2682 drm_framebuffer_unreference(fb); 2683 2684 return ret; 2685 } 2686 2687 2688 /** 2689 * drm_fb_release - remove and free the FBs on this file 2690 * @priv: drm file for the ioctl 2691 * 2692 * Destroy all the FBs associated with @filp. 2693 * 2694 * Called by the user via ioctl. 2695 * 2696 * RETURNS: 2697 * Zero on success, errno on failure. 2698 */ 2699 void drm_fb_release(struct drm_file *priv) 2700 { 2701 struct drm_device *dev = priv->minor->dev; 2702 struct drm_framebuffer *fb, *tfb; 2703 2704 mutex_lock(&priv->fbs_lock); 2705 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 2706 2707 mutex_lock(&dev->mode_config.fb_lock); 2708 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2709 __drm_framebuffer_unregister(dev, fb); 2710 mutex_unlock(&dev->mode_config.fb_lock); 2711 2712 list_del_init(&fb->filp_head); 2713 2714 /* This will also drop the fpriv->fbs reference. */ 2715 drm_framebuffer_remove(fb); 2716 } 2717 mutex_unlock(&priv->fbs_lock); 2718 } 2719 2720 /** 2721 * drm_mode_attachmode - add a mode to the user mode list 2722 * @dev: DRM device 2723 * @connector: connector to add the mode to 2724 * @mode: mode to add 2725 * 2726 * Add @mode to @connector's user mode list. 2727 */ 2728 static void drm_mode_attachmode(struct drm_device *dev, 2729 struct drm_connector *connector, 2730 struct drm_display_mode *mode) 2731 { 2732 list_add_tail(&mode->head, &connector->user_modes); 2733 } 2734 2735 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc, 2736 const struct drm_display_mode *mode) 2737 { 2738 struct drm_connector *connector; 2739 int ret = 0; 2740 struct drm_display_mode *dup_mode, *next; 2741 LIST_HEAD(list); 2742 2743 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2744 if (!connector->encoder) 2745 continue; 2746 if (connector->encoder->crtc == crtc) { 2747 dup_mode = drm_mode_duplicate(dev, mode); 2748 if (!dup_mode) { 2749 ret = -ENOMEM; 2750 goto out; 2751 } 2752 list_add_tail(&dup_mode->head, &list); 2753 } 2754 } 2755 2756 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2757 if (!connector->encoder) 2758 continue; 2759 if (connector->encoder->crtc == crtc) 2760 list_move_tail(list.next, &connector->user_modes); 2761 } 2762 2763 WARN_ON(!list_empty(&list)); 2764 2765 out: 2766 list_for_each_entry_safe(dup_mode, next, &list, head) 2767 drm_mode_destroy(dev, dup_mode); 2768 2769 return ret; 2770 } 2771 EXPORT_SYMBOL(drm_mode_attachmode_crtc); 2772 2773 static int drm_mode_detachmode(struct drm_device *dev, 2774 struct drm_connector *connector, 2775 struct drm_display_mode *mode) 2776 { 2777 int found = 0; 2778 int ret = 0; 2779 struct drm_display_mode *match_mode, *t; 2780 2781 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) { 2782 if (drm_mode_equal(match_mode, mode)) { 2783 list_del(&match_mode->head); 2784 drm_mode_destroy(dev, match_mode); 2785 found = 1; 2786 break; 2787 } 2788 } 2789 2790 if (!found) 2791 ret = -EINVAL; 2792 2793 return ret; 2794 } 2795 2796 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode) 2797 { 2798 struct drm_connector *connector; 2799 2800 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2801 drm_mode_detachmode(dev, connector, mode); 2802 } 2803 return 0; 2804 } 2805 EXPORT_SYMBOL(drm_mode_detachmode_crtc); 2806 2807 /** 2808 * drm_fb_attachmode - Attach a user mode to an connector 2809 * @dev: drm device for the ioctl 2810 * @data: data pointer for the ioctl 2811 * @file_priv: drm file for the ioctl call 2812 * 2813 * This attaches a user specified mode to an connector. 2814 * Called by the user via ioctl. 2815 * 2816 * RETURNS: 2817 * Zero on success, errno on failure. 2818 */ 2819 int drm_mode_attachmode_ioctl(struct drm_device *dev, 2820 void *data, struct drm_file *file_priv) 2821 { 2822 struct drm_mode_mode_cmd *mode_cmd = data; 2823 struct drm_connector *connector; 2824 struct drm_display_mode *mode; 2825 struct drm_mode_object *obj; 2826 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 2827 int ret; 2828 2829 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2830 return -EINVAL; 2831 2832 drm_modeset_lock_all(dev); 2833 2834 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 2835 if (!obj) { 2836 ret = -EINVAL; 2837 goto out; 2838 } 2839 connector = obj_to_connector(obj); 2840 2841 mode = drm_mode_create(dev); 2842 if (!mode) { 2843 ret = -ENOMEM; 2844 goto out; 2845 } 2846 2847 ret = drm_crtc_convert_umode(mode, umode); 2848 if (ret) { 2849 DRM_DEBUG_KMS("Invalid mode\n"); 2850 drm_mode_destroy(dev, mode); 2851 goto out; 2852 } 2853 2854 drm_mode_attachmode(dev, connector, mode); 2855 out: 2856 drm_modeset_unlock_all(dev); 2857 return ret; 2858 } 2859 2860 2861 /** 2862 * drm_fb_detachmode - Detach a user specified mode from an connector 2863 * @dev: drm device for the ioctl 2864 * @data: data pointer for the ioctl 2865 * @file_priv: drm file for the ioctl call 2866 * 2867 * Called by the user via ioctl. 2868 * 2869 * RETURNS: 2870 * Zero on success, errno on failure. 2871 */ 2872 int drm_mode_detachmode_ioctl(struct drm_device *dev, 2873 void *data, struct drm_file *file_priv) 2874 { 2875 struct drm_mode_object *obj; 2876 struct drm_mode_mode_cmd *mode_cmd = data; 2877 struct drm_connector *connector; 2878 struct drm_display_mode mode; 2879 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 2880 int ret; 2881 2882 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2883 return -EINVAL; 2884 2885 drm_modeset_lock_all(dev); 2886 2887 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 2888 if (!obj) { 2889 ret = -EINVAL; 2890 goto out; 2891 } 2892 connector = obj_to_connector(obj); 2893 2894 ret = drm_crtc_convert_umode(&mode, umode); 2895 if (ret) { 2896 DRM_DEBUG_KMS("Invalid mode\n"); 2897 goto out; 2898 } 2899 2900 ret = drm_mode_detachmode(dev, connector, &mode); 2901 out: 2902 drm_modeset_unlock_all(dev); 2903 return ret; 2904 } 2905 2906 struct drm_property *drm_property_create(struct drm_device *dev, int flags, 2907 const char *name, int num_values) 2908 { 2909 struct drm_property *property = NULL; 2910 int ret; 2911 2912 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 2913 if (!property) 2914 return NULL; 2915 2916 if (num_values) { 2917 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 2918 if (!property->values) 2919 goto fail; 2920 } 2921 2922 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 2923 if (ret) 2924 goto fail; 2925 2926 property->flags = flags; 2927 property->num_values = num_values; 2928 INIT_LIST_HEAD(&property->enum_blob_list); 2929 2930 if (name) { 2931 strncpy(property->name, name, DRM_PROP_NAME_LEN); 2932 property->name[DRM_PROP_NAME_LEN-1] = '\0'; 2933 } 2934 2935 list_add_tail(&property->head, &dev->mode_config.property_list); 2936 return property; 2937 fail: 2938 kfree(property->values); 2939 kfree(property); 2940 return NULL; 2941 } 2942 EXPORT_SYMBOL(drm_property_create); 2943 2944 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 2945 const char *name, 2946 const struct drm_prop_enum_list *props, 2947 int num_values) 2948 { 2949 struct drm_property *property; 2950 int i, ret; 2951 2952 flags |= DRM_MODE_PROP_ENUM; 2953 2954 property = drm_property_create(dev, flags, name, num_values); 2955 if (!property) 2956 return NULL; 2957 2958 for (i = 0; i < num_values; i++) { 2959 ret = drm_property_add_enum(property, i, 2960 props[i].type, 2961 props[i].name); 2962 if (ret) { 2963 drm_property_destroy(dev, property); 2964 return NULL; 2965 } 2966 } 2967 2968 return property; 2969 } 2970 EXPORT_SYMBOL(drm_property_create_enum); 2971 2972 struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 2973 int flags, const char *name, 2974 const struct drm_prop_enum_list *props, 2975 int num_values) 2976 { 2977 struct drm_property *property; 2978 int i, ret; 2979 2980 flags |= DRM_MODE_PROP_BITMASK; 2981 2982 property = drm_property_create(dev, flags, name, num_values); 2983 if (!property) 2984 return NULL; 2985 2986 for (i = 0; i < num_values; i++) { 2987 ret = drm_property_add_enum(property, i, 2988 props[i].type, 2989 props[i].name); 2990 if (ret) { 2991 drm_property_destroy(dev, property); 2992 return NULL; 2993 } 2994 } 2995 2996 return property; 2997 } 2998 EXPORT_SYMBOL(drm_property_create_bitmask); 2999 3000 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 3001 const char *name, 3002 uint64_t min, uint64_t max) 3003 { 3004 struct drm_property *property; 3005 3006 flags |= DRM_MODE_PROP_RANGE; 3007 3008 property = drm_property_create(dev, flags, name, 2); 3009 if (!property) 3010 return NULL; 3011 3012 property->values[0] = min; 3013 property->values[1] = max; 3014 3015 return property; 3016 } 3017 EXPORT_SYMBOL(drm_property_create_range); 3018 3019 int drm_property_add_enum(struct drm_property *property, int index, 3020 uint64_t value, const char *name) 3021 { 3022 struct drm_property_enum *prop_enum; 3023 3024 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) 3025 return -EINVAL; 3026 3027 /* 3028 * Bitmask enum properties have the additional constraint of values 3029 * from 0 to 63 3030 */ 3031 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) 3032 return -EINVAL; 3033 3034 if (!list_empty(&property->enum_blob_list)) { 3035 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 3036 if (prop_enum->value == value) { 3037 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 3038 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 3039 return 0; 3040 } 3041 } 3042 } 3043 3044 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 3045 if (!prop_enum) 3046 return -ENOMEM; 3047 3048 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 3049 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 3050 prop_enum->value = value; 3051 3052 property->values[index] = value; 3053 list_add_tail(&prop_enum->head, &property->enum_blob_list); 3054 return 0; 3055 } 3056 EXPORT_SYMBOL(drm_property_add_enum); 3057 3058 void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 3059 { 3060 struct drm_property_enum *prop_enum, *pt; 3061 3062 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 3063 list_del(&prop_enum->head); 3064 kfree(prop_enum); 3065 } 3066 3067 if (property->num_values) 3068 kfree(property->values); 3069 drm_mode_object_put(dev, &property->base); 3070 list_del(&property->head); 3071 kfree(property); 3072 } 3073 EXPORT_SYMBOL(drm_property_destroy); 3074 3075 void drm_object_attach_property(struct drm_mode_object *obj, 3076 struct drm_property *property, 3077 uint64_t init_val) 3078 { 3079 int count = obj->properties->count; 3080 3081 if (count == DRM_OBJECT_MAX_PROPERTY) { 3082 WARN(1, "Failed to attach object property (type: 0x%x). Please " 3083 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " 3084 "you see this message on the same object type.\n", 3085 obj->type); 3086 return; 3087 } 3088 3089 obj->properties->ids[count] = property->base.id; 3090 obj->properties->values[count] = init_val; 3091 obj->properties->count++; 3092 } 3093 EXPORT_SYMBOL(drm_object_attach_property); 3094 3095 int drm_object_property_set_value(struct drm_mode_object *obj, 3096 struct drm_property *property, uint64_t val) 3097 { 3098 int i; 3099 3100 for (i = 0; i < obj->properties->count; i++) { 3101 if (obj->properties->ids[i] == property->base.id) { 3102 obj->properties->values[i] = val; 3103 return 0; 3104 } 3105 } 3106 3107 return -EINVAL; 3108 } 3109 EXPORT_SYMBOL(drm_object_property_set_value); 3110 3111 int drm_object_property_get_value(struct drm_mode_object *obj, 3112 struct drm_property *property, uint64_t *val) 3113 { 3114 int i; 3115 3116 for (i = 0; i < obj->properties->count; i++) { 3117 if (obj->properties->ids[i] == property->base.id) { 3118 *val = obj->properties->values[i]; 3119 return 0; 3120 } 3121 } 3122 3123 return -EINVAL; 3124 } 3125 EXPORT_SYMBOL(drm_object_property_get_value); 3126 3127 int drm_mode_getproperty_ioctl(struct drm_device *dev, 3128 void *data, struct drm_file *file_priv) 3129 { 3130 struct drm_mode_object *obj; 3131 struct drm_mode_get_property *out_resp = data; 3132 struct drm_property *property; 3133 int enum_count = 0; 3134 int blob_count = 0; 3135 int value_count = 0; 3136 int ret = 0, i; 3137 int copied; 3138 struct drm_property_enum *prop_enum; 3139 struct drm_mode_property_enum __user *enum_ptr; 3140 struct drm_property_blob *prop_blob; 3141 uint32_t __user *blob_id_ptr; 3142 uint64_t __user *values_ptr; 3143 uint32_t __user *blob_length_ptr; 3144 3145 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3146 return -EINVAL; 3147 3148 drm_modeset_lock_all(dev); 3149 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 3150 if (!obj) { 3151 ret = -EINVAL; 3152 goto done; 3153 } 3154 property = obj_to_property(obj); 3155 3156 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3157 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 3158 enum_count++; 3159 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3160 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 3161 blob_count++; 3162 } 3163 3164 value_count = property->num_values; 3165 3166 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 3167 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 3168 out_resp->flags = property->flags; 3169 3170 if ((out_resp->count_values >= value_count) && value_count) { 3171 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; 3172 for (i = 0; i < value_count; i++) { 3173 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 3174 ret = -EFAULT; 3175 goto done; 3176 } 3177 } 3178 } 3179 out_resp->count_values = value_count; 3180 3181 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3182 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 3183 copied = 0; 3184 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; 3185 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 3186 3187 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 3188 ret = -EFAULT; 3189 goto done; 3190 } 3191 3192 if (copy_to_user(&enum_ptr[copied].name, 3193 &prop_enum->name, DRM_PROP_NAME_LEN)) { 3194 ret = -EFAULT; 3195 goto done; 3196 } 3197 copied++; 3198 } 3199 } 3200 out_resp->count_enum_blobs = enum_count; 3201 } 3202 3203 if (property->flags & DRM_MODE_PROP_BLOB) { 3204 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 3205 copied = 0; 3206 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; 3207 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; 3208 3209 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 3210 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 3211 ret = -EFAULT; 3212 goto done; 3213 } 3214 3215 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 3216 ret = -EFAULT; 3217 goto done; 3218 } 3219 3220 copied++; 3221 } 3222 } 3223 out_resp->count_enum_blobs = blob_count; 3224 } 3225 done: 3226 drm_modeset_unlock_all(dev); 3227 return ret; 3228 } 3229 3230 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 3231 void *data) 3232 { 3233 struct drm_property_blob *blob; 3234 int ret; 3235 3236 if (!length || !data) 3237 return NULL; 3238 3239 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 3240 if (!blob) 3241 return NULL; 3242 3243 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 3244 if (ret) { 3245 kfree(blob); 3246 return NULL; 3247 } 3248 3249 blob->length = length; 3250 3251 memcpy(blob->data, data, length); 3252 3253 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 3254 return blob; 3255 } 3256 3257 static void drm_property_destroy_blob(struct drm_device *dev, 3258 struct drm_property_blob *blob) 3259 { 3260 drm_mode_object_put(dev, &blob->base); 3261 list_del(&blob->head); 3262 kfree(blob); 3263 } 3264 3265 int drm_mode_getblob_ioctl(struct drm_device *dev, 3266 void *data, struct drm_file *file_priv) 3267 { 3268 struct drm_mode_object *obj; 3269 struct drm_mode_get_blob *out_resp = data; 3270 struct drm_property_blob *blob; 3271 int ret = 0; 3272 void __user *blob_ptr; 3273 3274 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3275 return -EINVAL; 3276 3277 drm_modeset_lock_all(dev); 3278 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 3279 if (!obj) { 3280 ret = -EINVAL; 3281 goto done; 3282 } 3283 blob = obj_to_blob(obj); 3284 3285 if (out_resp->length == blob->length) { 3286 blob_ptr = (void __user *)(unsigned long)out_resp->data; 3287 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 3288 ret = -EFAULT; 3289 goto done; 3290 } 3291 } 3292 out_resp->length = blob->length; 3293 3294 done: 3295 drm_modeset_unlock_all(dev); 3296 return ret; 3297 } 3298 3299 int drm_mode_connector_update_edid_property(struct drm_connector *connector, 3300 struct edid *edid) 3301 { 3302 struct drm_device *dev = connector->dev; 3303 int ret, size; 3304 3305 if (connector->edid_blob_ptr) 3306 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 3307 3308 /* Delete edid, when there is none. */ 3309 if (!edid) { 3310 connector->edid_blob_ptr = NULL; 3311 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); 3312 return ret; 3313 } 3314 3315 size = EDID_LENGTH * (1 + edid->extensions); 3316 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 3317 size, edid); 3318 if (!connector->edid_blob_ptr) 3319 return -EINVAL; 3320 3321 ret = drm_object_property_set_value(&connector->base, 3322 dev->mode_config.edid_property, 3323 connector->edid_blob_ptr->base.id); 3324 3325 return ret; 3326 } 3327 EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 3328 3329 static bool drm_property_change_is_valid(struct drm_property *property, 3330 uint64_t value) 3331 { 3332 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 3333 return false; 3334 if (property->flags & DRM_MODE_PROP_RANGE) { 3335 if (value < property->values[0] || value > property->values[1]) 3336 return false; 3337 return true; 3338 } else if (property->flags & DRM_MODE_PROP_BITMASK) { 3339 int i; 3340 uint64_t valid_mask = 0; 3341 for (i = 0; i < property->num_values; i++) 3342 valid_mask |= (1ULL << property->values[i]); 3343 return !(value & ~valid_mask); 3344 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3345 /* Only the driver knows */ 3346 return true; 3347 } else { 3348 int i; 3349 for (i = 0; i < property->num_values; i++) 3350 if (property->values[i] == value) 3351 return true; 3352 return false; 3353 } 3354 } 3355 3356 int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 3357 void *data, struct drm_file *file_priv) 3358 { 3359 struct drm_mode_connector_set_property *conn_set_prop = data; 3360 struct drm_mode_obj_set_property obj_set_prop = { 3361 .value = conn_set_prop->value, 3362 .prop_id = conn_set_prop->prop_id, 3363 .obj_id = conn_set_prop->connector_id, 3364 .obj_type = DRM_MODE_OBJECT_CONNECTOR 3365 }; 3366 3367 /* It does all the locking and checking we need */ 3368 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); 3369 } 3370 3371 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, 3372 struct drm_property *property, 3373 uint64_t value) 3374 { 3375 int ret = -EINVAL; 3376 struct drm_connector *connector = obj_to_connector(obj); 3377 3378 /* Do DPMS ourselves */ 3379 if (property == connector->dev->mode_config.dpms_property) { 3380 if (connector->funcs->dpms) 3381 (*connector->funcs->dpms)(connector, (int)value); 3382 ret = 0; 3383 } else if (connector->funcs->set_property) 3384 ret = connector->funcs->set_property(connector, property, value); 3385 3386 /* store the property value if successful */ 3387 if (!ret) 3388 drm_object_property_set_value(&connector->base, property, value); 3389 return ret; 3390 } 3391 3392 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 3393 struct drm_property *property, 3394 uint64_t value) 3395 { 3396 int ret = -EINVAL; 3397 struct drm_crtc *crtc = obj_to_crtc(obj); 3398 3399 if (crtc->funcs->set_property) 3400 ret = crtc->funcs->set_property(crtc, property, value); 3401 if (!ret) 3402 drm_object_property_set_value(obj, property, value); 3403 3404 return ret; 3405 } 3406 3407 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, 3408 struct drm_property *property, 3409 uint64_t value) 3410 { 3411 int ret = -EINVAL; 3412 struct drm_plane *plane = obj_to_plane(obj); 3413 3414 if (plane->funcs->set_property) 3415 ret = plane->funcs->set_property(plane, property, value); 3416 if (!ret) 3417 drm_object_property_set_value(obj, property, value); 3418 3419 return ret; 3420 } 3421 3422 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 3423 struct drm_file *file_priv) 3424 { 3425 struct drm_mode_obj_get_properties *arg = data; 3426 struct drm_mode_object *obj; 3427 int ret = 0; 3428 int i; 3429 int copied = 0; 3430 int props_count = 0; 3431 uint32_t __user *props_ptr; 3432 uint64_t __user *prop_values_ptr; 3433 3434 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3435 return -EINVAL; 3436 3437 drm_modeset_lock_all(dev); 3438 3439 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3440 if (!obj) { 3441 ret = -EINVAL; 3442 goto out; 3443 } 3444 if (!obj->properties) { 3445 ret = -EINVAL; 3446 goto out; 3447 } 3448 3449 props_count = obj->properties->count; 3450 3451 /* This ioctl is called twice, once to determine how much space is 3452 * needed, and the 2nd time to fill it. */ 3453 if ((arg->count_props >= props_count) && props_count) { 3454 copied = 0; 3455 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 3456 prop_values_ptr = (uint64_t __user *)(unsigned long) 3457 (arg->prop_values_ptr); 3458 for (i = 0; i < props_count; i++) { 3459 if (put_user(obj->properties->ids[i], 3460 props_ptr + copied)) { 3461 ret = -EFAULT; 3462 goto out; 3463 } 3464 if (put_user(obj->properties->values[i], 3465 prop_values_ptr + copied)) { 3466 ret = -EFAULT; 3467 goto out; 3468 } 3469 copied++; 3470 } 3471 } 3472 arg->count_props = props_count; 3473 out: 3474 drm_modeset_unlock_all(dev); 3475 return ret; 3476 } 3477 3478 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 3479 struct drm_file *file_priv) 3480 { 3481 struct drm_mode_obj_set_property *arg = data; 3482 struct drm_mode_object *arg_obj; 3483 struct drm_mode_object *prop_obj; 3484 struct drm_property *property; 3485 int ret = -EINVAL; 3486 int i; 3487 3488 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3489 return -EINVAL; 3490 3491 drm_modeset_lock_all(dev); 3492 3493 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3494 if (!arg_obj) 3495 goto out; 3496 if (!arg_obj->properties) 3497 goto out; 3498 3499 for (i = 0; i < arg_obj->properties->count; i++) 3500 if (arg_obj->properties->ids[i] == arg->prop_id) 3501 break; 3502 3503 if (i == arg_obj->properties->count) 3504 goto out; 3505 3506 prop_obj = drm_mode_object_find(dev, arg->prop_id, 3507 DRM_MODE_OBJECT_PROPERTY); 3508 if (!prop_obj) 3509 goto out; 3510 property = obj_to_property(prop_obj); 3511 3512 if (!drm_property_change_is_valid(property, arg->value)) 3513 goto out; 3514 3515 switch (arg_obj->type) { 3516 case DRM_MODE_OBJECT_CONNECTOR: 3517 ret = drm_mode_connector_set_obj_prop(arg_obj, property, 3518 arg->value); 3519 break; 3520 case DRM_MODE_OBJECT_CRTC: 3521 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); 3522 break; 3523 case DRM_MODE_OBJECT_PLANE: 3524 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); 3525 break; 3526 } 3527 3528 out: 3529 drm_modeset_unlock_all(dev); 3530 return ret; 3531 } 3532 3533 int drm_mode_connector_attach_encoder(struct drm_connector *connector, 3534 struct drm_encoder *encoder) 3535 { 3536 int i; 3537 3538 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3539 if (connector->encoder_ids[i] == 0) { 3540 connector->encoder_ids[i] = encoder->base.id; 3541 return 0; 3542 } 3543 } 3544 return -ENOMEM; 3545 } 3546 EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 3547 3548 void drm_mode_connector_detach_encoder(struct drm_connector *connector, 3549 struct drm_encoder *encoder) 3550 { 3551 int i; 3552 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3553 if (connector->encoder_ids[i] == encoder->base.id) { 3554 connector->encoder_ids[i] = 0; 3555 if (connector->encoder == encoder) 3556 connector->encoder = NULL; 3557 break; 3558 } 3559 } 3560 } 3561 EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 3562 3563 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 3564 int gamma_size) 3565 { 3566 crtc->gamma_size = gamma_size; 3567 3568 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 3569 if (!crtc->gamma_store) { 3570 crtc->gamma_size = 0; 3571 return -ENOMEM; 3572 } 3573 3574 return 0; 3575 } 3576 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 3577 3578 int drm_mode_gamma_set_ioctl(struct drm_device *dev, 3579 void *data, struct drm_file *file_priv) 3580 { 3581 struct drm_mode_crtc_lut *crtc_lut = data; 3582 struct drm_mode_object *obj; 3583 struct drm_crtc *crtc; 3584 void *r_base, *g_base, *b_base; 3585 int size; 3586 int ret = 0; 3587 3588 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3589 return -EINVAL; 3590 3591 drm_modeset_lock_all(dev); 3592 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3593 if (!obj) { 3594 ret = -EINVAL; 3595 goto out; 3596 } 3597 crtc = obj_to_crtc(obj); 3598 3599 if (crtc->funcs->gamma_set == NULL) { 3600 ret = -ENOSYS; 3601 goto out; 3602 } 3603 3604 /* memcpy into gamma store */ 3605 if (crtc_lut->gamma_size != crtc->gamma_size) { 3606 ret = -EINVAL; 3607 goto out; 3608 } 3609 3610 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3611 r_base = crtc->gamma_store; 3612 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 3613 ret = -EFAULT; 3614 goto out; 3615 } 3616 3617 g_base = r_base + size; 3618 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 3619 ret = -EFAULT; 3620 goto out; 3621 } 3622 3623 b_base = g_base + size; 3624 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 3625 ret = -EFAULT; 3626 goto out; 3627 } 3628 3629 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 3630 3631 out: 3632 drm_modeset_unlock_all(dev); 3633 return ret; 3634 3635 } 3636 3637 int drm_mode_gamma_get_ioctl(struct drm_device *dev, 3638 void *data, struct drm_file *file_priv) 3639 { 3640 struct drm_mode_crtc_lut *crtc_lut = data; 3641 struct drm_mode_object *obj; 3642 struct drm_crtc *crtc; 3643 void *r_base, *g_base, *b_base; 3644 int size; 3645 int ret = 0; 3646 3647 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3648 return -EINVAL; 3649 3650 drm_modeset_lock_all(dev); 3651 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3652 if (!obj) { 3653 ret = -EINVAL; 3654 goto out; 3655 } 3656 crtc = obj_to_crtc(obj); 3657 3658 /* memcpy into gamma store */ 3659 if (crtc_lut->gamma_size != crtc->gamma_size) { 3660 ret = -EINVAL; 3661 goto out; 3662 } 3663 3664 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3665 r_base = crtc->gamma_store; 3666 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 3667 ret = -EFAULT; 3668 goto out; 3669 } 3670 3671 g_base = r_base + size; 3672 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 3673 ret = -EFAULT; 3674 goto out; 3675 } 3676 3677 b_base = g_base + size; 3678 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 3679 ret = -EFAULT; 3680 goto out; 3681 } 3682 out: 3683 drm_modeset_unlock_all(dev); 3684 return ret; 3685 } 3686 3687 int drm_mode_page_flip_ioctl(struct drm_device *dev, 3688 void *data, struct drm_file *file_priv) 3689 { 3690 struct drm_mode_crtc_page_flip *page_flip = data; 3691 struct drm_mode_object *obj; 3692 struct drm_crtc *crtc; 3693 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 3694 struct drm_pending_vblank_event *e = NULL; 3695 unsigned long flags; 3696 int hdisplay, vdisplay; 3697 int ret = -EINVAL; 3698 3699 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || 3700 page_flip->reserved != 0) 3701 return -EINVAL; 3702 3703 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); 3704 if (!obj) 3705 return -EINVAL; 3706 crtc = obj_to_crtc(obj); 3707 3708 mutex_lock(&crtc->mutex); 3709 if (crtc->fb == NULL) { 3710 /* The framebuffer is currently unbound, presumably 3711 * due to a hotplug event, that userspace has not 3712 * yet discovered. 3713 */ 3714 ret = -EBUSY; 3715 goto out; 3716 } 3717 3718 if (crtc->funcs->page_flip == NULL) 3719 goto out; 3720 3721 fb = drm_framebuffer_lookup(dev, page_flip->fb_id); 3722 if (!fb) 3723 goto out; 3724 3725 hdisplay = crtc->mode.hdisplay; 3726 vdisplay = crtc->mode.vdisplay; 3727 3728 if (crtc->invert_dimensions) 3729 swap(hdisplay, vdisplay); 3730 3731 if (hdisplay > fb->width || 3732 vdisplay > fb->height || 3733 crtc->x > fb->width - hdisplay || 3734 crtc->y > fb->height - vdisplay) { 3735 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 3736 fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y, 3737 crtc->invert_dimensions ? " (inverted)" : ""); 3738 ret = -ENOSPC; 3739 goto out; 3740 } 3741 3742 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3743 ret = -ENOMEM; 3744 spin_lock_irqsave(&dev->event_lock, flags); 3745 if (file_priv->event_space < sizeof e->event) { 3746 spin_unlock_irqrestore(&dev->event_lock, flags); 3747 goto out; 3748 } 3749 file_priv->event_space -= sizeof e->event; 3750 spin_unlock_irqrestore(&dev->event_lock, flags); 3751 3752 e = kzalloc(sizeof *e, GFP_KERNEL); 3753 if (e == NULL) { 3754 spin_lock_irqsave(&dev->event_lock, flags); 3755 file_priv->event_space += sizeof e->event; 3756 spin_unlock_irqrestore(&dev->event_lock, flags); 3757 goto out; 3758 } 3759 3760 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 3761 e->event.base.length = sizeof e->event; 3762 e->event.user_data = page_flip->user_data; 3763 e->base.event = &e->event.base; 3764 e->base.file_priv = file_priv; 3765 e->base.destroy = 3766 (void (*) (struct drm_pending_event *)) kfree; 3767 } 3768 3769 old_fb = crtc->fb; 3770 ret = crtc->funcs->page_flip(crtc, fb, e); 3771 if (ret) { 3772 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3773 spin_lock_irqsave(&dev->event_lock, flags); 3774 file_priv->event_space += sizeof e->event; 3775 spin_unlock_irqrestore(&dev->event_lock, flags); 3776 kfree(e); 3777 } 3778 /* Keep the old fb, don't unref it. */ 3779 old_fb = NULL; 3780 } else { 3781 /* 3782 * Warn if the driver hasn't properly updated the crtc->fb 3783 * field to reflect that the new framebuffer is now used. 3784 * Failing to do so will screw with the reference counting 3785 * on framebuffers. 3786 */ 3787 WARN_ON(crtc->fb != fb); 3788 /* Unref only the old framebuffer. */ 3789 fb = NULL; 3790 } 3791 3792 out: 3793 if (fb) 3794 drm_framebuffer_unreference(fb); 3795 if (old_fb) 3796 drm_framebuffer_unreference(old_fb); 3797 mutex_unlock(&crtc->mutex); 3798 3799 return ret; 3800 } 3801 3802 void drm_mode_config_reset(struct drm_device *dev) 3803 { 3804 struct drm_crtc *crtc; 3805 struct drm_encoder *encoder; 3806 struct drm_connector *connector; 3807 3808 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 3809 if (crtc->funcs->reset) 3810 crtc->funcs->reset(crtc); 3811 3812 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 3813 if (encoder->funcs->reset) 3814 encoder->funcs->reset(encoder); 3815 3816 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 3817 connector->status = connector_status_unknown; 3818 3819 if (connector->funcs->reset) 3820 connector->funcs->reset(connector); 3821 } 3822 } 3823 EXPORT_SYMBOL(drm_mode_config_reset); 3824 3825 int drm_mode_create_dumb_ioctl(struct drm_device *dev, 3826 void *data, struct drm_file *file_priv) 3827 { 3828 struct drm_mode_create_dumb *args = data; 3829 3830 if (!dev->driver->dumb_create) 3831 return -ENOSYS; 3832 return dev->driver->dumb_create(file_priv, dev, args); 3833 } 3834 3835 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 3836 void *data, struct drm_file *file_priv) 3837 { 3838 struct drm_mode_map_dumb *args = data; 3839 3840 /* call driver ioctl to get mmap offset */ 3841 if (!dev->driver->dumb_map_offset) 3842 return -ENOSYS; 3843 3844 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); 3845 } 3846 3847 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 3848 void *data, struct drm_file *file_priv) 3849 { 3850 struct drm_mode_destroy_dumb *args = data; 3851 3852 if (!dev->driver->dumb_destroy) 3853 return -ENOSYS; 3854 3855 return dev->driver->dumb_destroy(file_priv, dev, args->handle); 3856 } 3857 3858 /* 3859 * Just need to support RGB formats here for compat with code that doesn't 3860 * use pixel formats directly yet. 3861 */ 3862 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 3863 int *bpp) 3864 { 3865 switch (format) { 3866 case DRM_FORMAT_C8: 3867 case DRM_FORMAT_RGB332: 3868 case DRM_FORMAT_BGR233: 3869 *depth = 8; 3870 *bpp = 8; 3871 break; 3872 case DRM_FORMAT_XRGB1555: 3873 case DRM_FORMAT_XBGR1555: 3874 case DRM_FORMAT_RGBX5551: 3875 case DRM_FORMAT_BGRX5551: 3876 case DRM_FORMAT_ARGB1555: 3877 case DRM_FORMAT_ABGR1555: 3878 case DRM_FORMAT_RGBA5551: 3879 case DRM_FORMAT_BGRA5551: 3880 *depth = 15; 3881 *bpp = 16; 3882 break; 3883 case DRM_FORMAT_RGB565: 3884 case DRM_FORMAT_BGR565: 3885 *depth = 16; 3886 *bpp = 16; 3887 break; 3888 case DRM_FORMAT_RGB888: 3889 case DRM_FORMAT_BGR888: 3890 *depth = 24; 3891 *bpp = 24; 3892 break; 3893 case DRM_FORMAT_XRGB8888: 3894 case DRM_FORMAT_XBGR8888: 3895 case DRM_FORMAT_RGBX8888: 3896 case DRM_FORMAT_BGRX8888: 3897 *depth = 24; 3898 *bpp = 32; 3899 break; 3900 case DRM_FORMAT_XRGB2101010: 3901 case DRM_FORMAT_XBGR2101010: 3902 case DRM_FORMAT_RGBX1010102: 3903 case DRM_FORMAT_BGRX1010102: 3904 case DRM_FORMAT_ARGB2101010: 3905 case DRM_FORMAT_ABGR2101010: 3906 case DRM_FORMAT_RGBA1010102: 3907 case DRM_FORMAT_BGRA1010102: 3908 *depth = 30; 3909 *bpp = 32; 3910 break; 3911 case DRM_FORMAT_ARGB8888: 3912 case DRM_FORMAT_ABGR8888: 3913 case DRM_FORMAT_RGBA8888: 3914 case DRM_FORMAT_BGRA8888: 3915 *depth = 32; 3916 *bpp = 32; 3917 break; 3918 default: 3919 DRM_DEBUG_KMS("unsupported pixel format\n"); 3920 *depth = 0; 3921 *bpp = 0; 3922 break; 3923 } 3924 } 3925 EXPORT_SYMBOL(drm_fb_get_bpp_depth); 3926 3927 /** 3928 * drm_format_num_planes - get the number of planes for format 3929 * @format: pixel format (DRM_FORMAT_*) 3930 * 3931 * RETURNS: 3932 * The number of planes used by the specified pixel format. 3933 */ 3934 int drm_format_num_planes(uint32_t format) 3935 { 3936 switch (format) { 3937 case DRM_FORMAT_YUV410: 3938 case DRM_FORMAT_YVU410: 3939 case DRM_FORMAT_YUV411: 3940 case DRM_FORMAT_YVU411: 3941 case DRM_FORMAT_YUV420: 3942 case DRM_FORMAT_YVU420: 3943 case DRM_FORMAT_YUV422: 3944 case DRM_FORMAT_YVU422: 3945 case DRM_FORMAT_YUV444: 3946 case DRM_FORMAT_YVU444: 3947 return 3; 3948 case DRM_FORMAT_NV12: 3949 case DRM_FORMAT_NV21: 3950 case DRM_FORMAT_NV16: 3951 case DRM_FORMAT_NV61: 3952 case DRM_FORMAT_NV24: 3953 case DRM_FORMAT_NV42: 3954 return 2; 3955 default: 3956 return 1; 3957 } 3958 } 3959 EXPORT_SYMBOL(drm_format_num_planes); 3960 3961 /** 3962 * drm_format_plane_cpp - determine the bytes per pixel value 3963 * @format: pixel format (DRM_FORMAT_*) 3964 * @plane: plane index 3965 * 3966 * RETURNS: 3967 * The bytes per pixel value for the specified plane. 3968 */ 3969 int drm_format_plane_cpp(uint32_t format, int plane) 3970 { 3971 unsigned int depth; 3972 int bpp; 3973 3974 if (plane >= drm_format_num_planes(format)) 3975 return 0; 3976 3977 switch (format) { 3978 case DRM_FORMAT_YUYV: 3979 case DRM_FORMAT_YVYU: 3980 case DRM_FORMAT_UYVY: 3981 case DRM_FORMAT_VYUY: 3982 return 2; 3983 case DRM_FORMAT_NV12: 3984 case DRM_FORMAT_NV21: 3985 case DRM_FORMAT_NV16: 3986 case DRM_FORMAT_NV61: 3987 case DRM_FORMAT_NV24: 3988 case DRM_FORMAT_NV42: 3989 return plane ? 2 : 1; 3990 case DRM_FORMAT_YUV410: 3991 case DRM_FORMAT_YVU410: 3992 case DRM_FORMAT_YUV411: 3993 case DRM_FORMAT_YVU411: 3994 case DRM_FORMAT_YUV420: 3995 case DRM_FORMAT_YVU420: 3996 case DRM_FORMAT_YUV422: 3997 case DRM_FORMAT_YVU422: 3998 case DRM_FORMAT_YUV444: 3999 case DRM_FORMAT_YVU444: 4000 return 1; 4001 default: 4002 drm_fb_get_bpp_depth(format, &depth, &bpp); 4003 return bpp >> 3; 4004 } 4005 } 4006 EXPORT_SYMBOL(drm_format_plane_cpp); 4007 4008 /** 4009 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor 4010 * @format: pixel format (DRM_FORMAT_*) 4011 * 4012 * RETURNS: 4013 * The horizontal chroma subsampling factor for the 4014 * specified pixel format. 4015 */ 4016 int drm_format_horz_chroma_subsampling(uint32_t format) 4017 { 4018 switch (format) { 4019 case DRM_FORMAT_YUV411: 4020 case DRM_FORMAT_YVU411: 4021 case DRM_FORMAT_YUV410: 4022 case DRM_FORMAT_YVU410: 4023 return 4; 4024 case DRM_FORMAT_YUYV: 4025 case DRM_FORMAT_YVYU: 4026 case DRM_FORMAT_UYVY: 4027 case DRM_FORMAT_VYUY: 4028 case DRM_FORMAT_NV12: 4029 case DRM_FORMAT_NV21: 4030 case DRM_FORMAT_NV16: 4031 case DRM_FORMAT_NV61: 4032 case DRM_FORMAT_YUV422: 4033 case DRM_FORMAT_YVU422: 4034 case DRM_FORMAT_YUV420: 4035 case DRM_FORMAT_YVU420: 4036 return 2; 4037 default: 4038 return 1; 4039 } 4040 } 4041 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); 4042 4043 /** 4044 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor 4045 * @format: pixel format (DRM_FORMAT_*) 4046 * 4047 * RETURNS: 4048 * The vertical chroma subsampling factor for the 4049 * specified pixel format. 4050 */ 4051 int drm_format_vert_chroma_subsampling(uint32_t format) 4052 { 4053 switch (format) { 4054 case DRM_FORMAT_YUV410: 4055 case DRM_FORMAT_YVU410: 4056 return 4; 4057 case DRM_FORMAT_YUV420: 4058 case DRM_FORMAT_YVU420: 4059 case DRM_FORMAT_NV12: 4060 case DRM_FORMAT_NV21: 4061 return 2; 4062 default: 4063 return 1; 4064 } 4065 } 4066 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); 4067