1 /* 2 * Copyright (c) 2016 Intel Corporation 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that copyright 7 * notice and this permission notice appear in supporting documentation, and 8 * that the name of the copyright holders not be used in advertising or 9 * publicity pertaining to distribution of the software without specific, 10 * written prior permission. The copyright holders make no representations 11 * about the suitability of this software for any purpose. It is provided "as 12 * is" without express or implied warranty. 13 * 14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 20 * OF THIS SOFTWARE. 21 */ 22 23 #ifndef __DRM_MODE_CONFIG_H__ 24 #define __DRM_MODE_CONFIG_H__ 25 26 #include <linux/mutex.h> 27 #include <linux/types.h> 28 #include <linux/idr.h> 29 #include <linux/workqueue.h> 30 31 #include <drm/drm_modeset_lock.h> 32 33 struct drm_file; 34 struct drm_device; 35 struct drm_atomic_state; 36 struct drm_mode_fb_cmd2; 37 struct drm_format_info; 38 39 /** 40 * struct drm_mode_config_funcs - basic driver provided mode setting functions 41 * 42 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that 43 * involve drivers. 44 */ 45 struct drm_mode_config_funcs { 46 /** 47 * @fb_create: 48 * 49 * Create a new framebuffer object. The core does basic checks on the 50 * requested metadata, but most of that is left to the driver. See 51 * &struct drm_mode_fb_cmd2 for details. 52 * 53 * If the parameters are deemed valid and the backing storage objects in 54 * the underlying memory manager all exist, then the driver allocates 55 * a new &drm_framebuffer structure, subclassed to contain 56 * driver-specific information (like the internal native buffer object 57 * references). It also needs to fill out all relevant metadata, which 58 * should be done by calling drm_helper_mode_fill_fb_struct(). 59 * 60 * The initialization is finalized by calling drm_framebuffer_init(), 61 * which registers the framebuffer and makes it accessible to other 62 * threads. 63 * 64 * RETURNS: 65 * 66 * A new framebuffer with an initial reference count of 1 or a negative 67 * error code encoded with ERR_PTR(). 68 */ 69 struct drm_framebuffer *(*fb_create)(struct drm_device *dev, 70 struct drm_file *file_priv, 71 const struct drm_mode_fb_cmd2 *mode_cmd); 72 73 /** 74 * @get_format_info: 75 * 76 * Allows a driver to return custom format information for special 77 * fb layouts (eg. ones with auxiliary compression control planes). 78 * 79 * RETURNS: 80 * 81 * The format information specific to the given fb metadata, or 82 * NULL if none is found. 83 */ 84 const struct drm_format_info *(*get_format_info)(const struct drm_mode_fb_cmd2 *mode_cmd); 85 86 /** 87 * @output_poll_changed: 88 * 89 * Callback used by helpers to inform the driver of output configuration 90 * changes. 91 * 92 * Drivers implementing fbdev emulation with the helpers can call 93 * drm_fb_helper_hotplug_changed from this hook to inform the fbdev 94 * helper of output changes. 95 * 96 * FIXME: 97 * 98 * Except that there's no vtable for device-level helper callbacks 99 * there's no reason this is a core function. 100 */ 101 void (*output_poll_changed)(struct drm_device *dev); 102 103 /** 104 * @atomic_check: 105 * 106 * This is the only hook to validate an atomic modeset update. This 107 * function must reject any modeset and state changes which the hardware 108 * or driver doesn't support. This includes but is of course not limited 109 * to: 110 * 111 * - Checking that the modes, framebuffers, scaling and placement 112 * requirements and so on are within the limits of the hardware. 113 * 114 * - Checking that any hidden shared resources are not oversubscribed. 115 * This can be shared PLLs, shared lanes, overall memory bandwidth, 116 * display fifo space (where shared between planes or maybe even 117 * CRTCs). 118 * 119 * - Checking that virtualized resources exported to userspace are not 120 * oversubscribed. For various reasons it can make sense to expose 121 * more planes, crtcs or encoders than which are physically there. One 122 * example is dual-pipe operations (which generally should be hidden 123 * from userspace if when lockstepped in hardware, exposed otherwise), 124 * where a plane might need 1 hardware plane (if it's just on one 125 * pipe), 2 hardware planes (when it spans both pipes) or maybe even 126 * shared a hardware plane with a 2nd plane (if there's a compatible 127 * plane requested on the area handled by the other pipe). 128 * 129 * - Check that any transitional state is possible and that if 130 * requested, the update can indeed be done in the vblank period 131 * without temporarily disabling some functions. 132 * 133 * - Check any other constraints the driver or hardware might have. 134 * 135 * - This callback also needs to correctly fill out the &drm_crtc_state 136 * in this update to make sure that drm_atomic_crtc_needs_modeset() 137 * reflects the nature of the possible update and returns true if and 138 * only if the update cannot be applied without tearing within one 139 * vblank on that CRTC. The core uses that information to reject 140 * updates which require a full modeset (i.e. blanking the screen, or 141 * at least pausing updates for a substantial amount of time) if 142 * userspace has disallowed that in its request. 143 * 144 * - The driver also does not need to repeat basic input validation 145 * like done for the corresponding legacy entry points. The core does 146 * that before calling this hook. 147 * 148 * See the documentation of @atomic_commit for an exhaustive list of 149 * error conditions which don't have to be checked at the in this 150 * callback. 151 * 152 * See the documentation for &struct drm_atomic_state for how exactly 153 * an atomic modeset update is described. 154 * 155 * Drivers using the atomic helpers can implement this hook using 156 * drm_atomic_helper_check(), or one of the exported sub-functions of 157 * it. 158 * 159 * RETURNS: 160 * 161 * 0 on success or one of the below negative error codes: 162 * 163 * - -EINVAL, if any of the above constraints are violated. 164 * 165 * - -EDEADLK, when returned from an attempt to acquire an additional 166 * &drm_modeset_lock through drm_modeset_lock(). 167 * 168 * - -ENOMEM, if allocating additional state sub-structures failed due 169 * to lack of memory. 170 * 171 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. 172 * This can either be due to a pending signal, or because the driver 173 * needs to completely bail out to recover from an exceptional 174 * situation like a GPU hang. From a userspace point all errors are 175 * treated equally. 176 */ 177 int (*atomic_check)(struct drm_device *dev, 178 struct drm_atomic_state *state); 179 180 /** 181 * @atomic_commit: 182 * 183 * This is the only hook to commit an atomic modeset update. The core 184 * guarantees that @atomic_check has been called successfully before 185 * calling this function, and that nothing has been changed in the 186 * interim. 187 * 188 * See the documentation for &struct drm_atomic_state for how exactly 189 * an atomic modeset update is described. 190 * 191 * Drivers using the atomic helpers can implement this hook using 192 * drm_atomic_helper_commit(), or one of the exported sub-functions of 193 * it. 194 * 195 * Nonblocking commits (as indicated with the nonblock parameter) must 196 * do any preparatory work which might result in an unsuccessful commit 197 * in the context of this callback. The only exceptions are hardware 198 * errors resulting in -EIO. But even in that case the driver must 199 * ensure that the display pipe is at least running, to avoid 200 * compositors crashing when pageflips don't work. Anything else, 201 * specifically committing the update to the hardware, should be done 202 * without blocking the caller. For updates which do not require a 203 * modeset this must be guaranteed. 204 * 205 * The driver must wait for any pending rendering to the new 206 * framebuffers to complete before executing the flip. It should also 207 * wait for any pending rendering from other drivers if the underlying 208 * buffer is a shared dma-buf. Nonblocking commits must not wait for 209 * rendering in the context of this callback. 210 * 211 * An application can request to be notified when the atomic commit has 212 * completed. These events are per-CRTC and can be distinguished by the 213 * CRTC index supplied in &drm_event to userspace. 214 * 215 * The drm core will supply a &struct drm_event in each CRTC's 216 * &drm_crtc_state.event. See the documentation for 217 * &drm_crtc_state.event for more details about the precise semantics of 218 * this event. 219 * 220 * NOTE: 221 * 222 * Drivers are not allowed to shut down any display pipe successfully 223 * enabled through an atomic commit on their own. Doing so can result in 224 * compositors crashing if a page flip is suddenly rejected because the 225 * pipe is off. 226 * 227 * RETURNS: 228 * 229 * 0 on success or one of the below negative error codes: 230 * 231 * - -EBUSY, if a nonblocking updated is requested and there is 232 * an earlier updated pending. Drivers are allowed to support a queue 233 * of outstanding updates, but currently no driver supports that. 234 * Note that drivers must wait for preceding updates to complete if a 235 * synchronous update is requested, they are not allowed to fail the 236 * commit in that case. 237 * 238 * - -ENOMEM, if the driver failed to allocate memory. Specifically 239 * this can happen when trying to pin framebuffers, which must only 240 * be done when committing the state. 241 * 242 * - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate 243 * that the driver has run out of vram, iommu space or similar GPU 244 * address space needed for framebuffer. 245 * 246 * - -EIO, if the hardware completely died. 247 * 248 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. 249 * This can either be due to a pending signal, or because the driver 250 * needs to completely bail out to recover from an exceptional 251 * situation like a GPU hang. From a userspace point of view all errors are 252 * treated equally. 253 * 254 * This list is exhaustive. Specifically this hook is not allowed to 255 * return -EINVAL (any invalid requests should be caught in 256 * @atomic_check) or -EDEADLK (this function must not acquire 257 * additional modeset locks). 258 */ 259 int (*atomic_commit)(struct drm_device *dev, 260 struct drm_atomic_state *state, 261 bool nonblock); 262 263 /** 264 * @atomic_state_alloc: 265 * 266 * This optional hook can be used by drivers that want to subclass struct 267 * &drm_atomic_state to be able to track their own driver-private global 268 * state easily. If this hook is implemented, drivers must also 269 * implement @atomic_state_clear and @atomic_state_free. 270 * 271 * RETURNS: 272 * 273 * A new &drm_atomic_state on success or NULL on failure. 274 */ 275 struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev); 276 277 /** 278 * @atomic_state_clear: 279 * 280 * This hook must clear any driver private state duplicated into the 281 * passed-in &drm_atomic_state. This hook is called when the caller 282 * encountered a &drm_modeset_lock deadlock and needs to drop all 283 * already acquired locks as part of the deadlock avoidance dance 284 * implemented in drm_modeset_backoff(). 285 * 286 * Any duplicated state must be invalidated since a concurrent atomic 287 * update might change it, and the drm atomic interfaces always apply 288 * updates as relative changes to the current state. 289 * 290 * Drivers that implement this must call drm_atomic_state_default_clear() 291 * to clear common state. 292 */ 293 void (*atomic_state_clear)(struct drm_atomic_state *state); 294 295 /** 296 * @atomic_state_free: 297 * 298 * This hook needs driver private resources and the &drm_atomic_state 299 * itself. Note that the core first calls drm_atomic_state_clear() to 300 * avoid code duplicate between the clear and free hooks. 301 * 302 * Drivers that implement this must call 303 * drm_atomic_state_default_release() to release common resources. 304 */ 305 void (*atomic_state_free)(struct drm_atomic_state *state); 306 }; 307 308 /** 309 * struct drm_mode_config - Mode configuration control structure 310 * @min_width: minimum pixel width on this device 311 * @min_height: minimum pixel height on this device 312 * @max_width: maximum pixel width on this device 313 * @max_height: maximum pixel height on this device 314 * @funcs: core driver provided mode setting functions 315 * @fb_base: base address of the framebuffer 316 * @poll_enabled: track polling support for this device 317 * @poll_running: track polling status for this device 318 * @delayed_event: track delayed poll uevent deliver for this device 319 * @output_poll_work: delayed work for polling in process context 320 * @preferred_depth: preferred RBG pixel depth, used by fb helpers 321 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering 322 * @cursor_width: hint to userspace for max cursor width 323 * @cursor_height: hint to userspace for max cursor height 324 * @helper_private: mid-layer private data 325 * 326 * Core mode resource tracking structure. All CRTC, encoders, and connectors 327 * enumerated by the driver are added here, as are global properties. Some 328 * global restrictions are also here, e.g. dimension restrictions. 329 */ 330 struct drm_mode_config { 331 /** 332 * @mutex: 333 * 334 * This is the big scary modeset BKL which protects everything that 335 * isn't protect otherwise. Scope is unclear and fuzzy, try to remove 336 * anything from under it's protection and move it into more well-scoped 337 * locks. 338 * 339 * The one important thing this protects is the use of @acquire_ctx. 340 */ 341 struct mutex mutex; 342 343 /** 344 * @connection_mutex: 345 * 346 * This protects connector state and the connector to encoder to CRTC 347 * routing chain. 348 * 349 * For atomic drivers specifically this protects &drm_connector.state. 350 */ 351 struct drm_modeset_lock connection_mutex; 352 353 /** 354 * @acquire_ctx: 355 * 356 * Global implicit acquire context used by atomic drivers for legacy 357 * IOCTLs. Deprecated, since implicit locking contexts make it 358 * impossible to use driver-private &struct drm_modeset_lock. Users of 359 * this must hold @mutex. 360 */ 361 struct drm_modeset_acquire_ctx *acquire_ctx; 362 363 /** 364 * @idr_mutex: 365 * 366 * Mutex for KMS ID allocation and management. Protects both @crtc_idr 367 * and @tile_idr. 368 */ 369 struct mutex idr_mutex; 370 371 /** 372 * @crtc_idr: 373 * 374 * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc, 375 * connector, modes - just makes life easier to have only one. 376 */ 377 struct idr crtc_idr; 378 379 /** 380 * @tile_idr: 381 * 382 * Use this idr for allocating new IDs for tiled sinks like use in some 383 * high-res DP MST screens. 384 */ 385 struct idr tile_idr; 386 387 /** @fb_lock: Mutex to protect fb the global @fb_list and @num_fb. */ 388 struct mutex fb_lock; 389 /** @num_fb: Number of entries on @fb_list. */ 390 int num_fb; 391 /** @fb_list: List of all &struct drm_framebuffer. */ 392 struct list_head fb_list; 393 394 /** 395 * @connector_list_lock: Protects @num_connector and 396 * @connector_list. 397 */ 398 spinlock_t connector_list_lock; 399 /** 400 * @num_connector: Number of connectors on this device. Protected by 401 * @connector_list_lock. 402 */ 403 int num_connector; 404 /** 405 * @connector_ida: ID allocator for connector indices. 406 */ 407 struct ida connector_ida; 408 /** 409 * @connector_list: 410 * 411 * List of connector objects linked with &drm_connector.head. Protected 412 * by @connector_list_lock. Only use drm_for_each_connector_iter() and 413 * &struct drm_connector_list_iter to walk this list. 414 */ 415 struct list_head connector_list; 416 /** 417 * @num_encoder: 418 * 419 * Number of encoders on this device. This is invariant over the 420 * lifetime of a device and hence doesn't need any locks. 421 */ 422 int num_encoder; 423 /** 424 * @encoder_list: 425 * 426 * List of encoder objects linked with &drm_encoder.head. This is 427 * invariant over the lifetime of a device and hence doesn't need any 428 * locks. 429 */ 430 struct list_head encoder_list; 431 432 /** 433 * @num_total_plane: 434 * 435 * Number of universal (i.e. with primary/curso) planes on this device. 436 * This is invariant over the lifetime of a device and hence doesn't 437 * need any locks. 438 */ 439 int num_total_plane; 440 /** 441 * @plane_list: 442 * 443 * List of plane objects linked with &drm_plane.head. This is invariant 444 * over the lifetime of a device and hence doesn't need any locks. 445 */ 446 struct list_head plane_list; 447 448 /** 449 * @num_crtc: 450 * 451 * Number of CRTCs on this device linked with &drm_crtc.head. This is invariant over the lifetime 452 * of a device and hence doesn't need any locks. 453 */ 454 int num_crtc; 455 /** 456 * @crtc_list: 457 * 458 * List of CRTC objects linked with &drm_crtc.head. This is invariant 459 * over the lifetime of a device and hence doesn't need any locks. 460 */ 461 struct list_head crtc_list; 462 463 /** 464 * @property_list: 465 * 466 * List of property type objects linked with &drm_property.head. This is 467 * invariant over the lifetime of a device and hence doesn't need any 468 * locks. 469 */ 470 struct list_head property_list; 471 472 int min_width, min_height; 473 int max_width, max_height; 474 const struct drm_mode_config_funcs *funcs; 475 resource_size_t fb_base; 476 477 /* output poll support */ 478 bool poll_enabled; 479 bool poll_running; 480 bool delayed_event; 481 struct delayed_work output_poll_work; 482 483 /** 484 * @blob_lock: 485 * 486 * Mutex for blob property allocation and management, protects 487 * @property_blob_list and &drm_file.blobs. 488 */ 489 struct mutex blob_lock; 490 491 /** 492 * @property_blob_list: 493 * 494 * List of all the blob property objects linked with 495 * &drm_property_blob.head. Protected by @blob_lock. 496 */ 497 struct list_head property_blob_list; 498 499 /* pointers to standard properties */ 500 501 /** 502 * @edid_property: Default connector property to hold the EDID of the 503 * currently connected sink, if any. 504 */ 505 struct drm_property *edid_property; 506 /** 507 * @dpms_property: Default connector property to control the 508 * connector's DPMS state. 509 */ 510 struct drm_property *dpms_property; 511 /** 512 * @path_property: Default connector property to hold the DP MST path 513 * for the port. 514 */ 515 struct drm_property *path_property; 516 /** 517 * @tile_property: Default connector property to store the tile 518 * position of a tiled screen, for sinks which need to be driven with 519 * multiple CRTCs. 520 */ 521 struct drm_property *tile_property; 522 /** 523 * @link_status_property: Default connector property for link status 524 * of a connector 525 */ 526 struct drm_property *link_status_property; 527 /** 528 * @plane_type_property: Default plane property to differentiate 529 * CURSOR, PRIMARY and OVERLAY legacy uses of planes. 530 */ 531 struct drm_property *plane_type_property; 532 /** 533 * @prop_src_x: Default atomic plane property for the plane source 534 * position in the connected &drm_framebuffer. 535 */ 536 struct drm_property *prop_src_x; 537 /** 538 * @prop_src_y: Default atomic plane property for the plane source 539 * position in the connected &drm_framebuffer. 540 */ 541 struct drm_property *prop_src_y; 542 /** 543 * @prop_src_w: Default atomic plane property for the plane source 544 * position in the connected &drm_framebuffer. 545 */ 546 struct drm_property *prop_src_w; 547 /** 548 * @prop_src_h: Default atomic plane property for the plane source 549 * position in the connected &drm_framebuffer. 550 */ 551 struct drm_property *prop_src_h; 552 /** 553 * @prop_crtc_x: Default atomic plane property for the plane destination 554 * position in the &drm_crtc is is being shown on. 555 */ 556 struct drm_property *prop_crtc_x; 557 /** 558 * @prop_crtc_y: Default atomic plane property for the plane destination 559 * position in the &drm_crtc is is being shown on. 560 */ 561 struct drm_property *prop_crtc_y; 562 /** 563 * @prop_crtc_w: Default atomic plane property for the plane destination 564 * position in the &drm_crtc is is being shown on. 565 */ 566 struct drm_property *prop_crtc_w; 567 /** 568 * @prop_crtc_h: Default atomic plane property for the plane destination 569 * position in the &drm_crtc is is being shown on. 570 */ 571 struct drm_property *prop_crtc_h; 572 /** 573 * @prop_fb_id: Default atomic plane property to specify the 574 * &drm_framebuffer. 575 */ 576 struct drm_property *prop_fb_id; 577 /** 578 * @prop_in_fence_fd: Sync File fd representing the incoming fences 579 * for a Plane. 580 */ 581 struct drm_property *prop_in_fence_fd; 582 /** 583 * @prop_out_fence_ptr: Sync File fd pointer representing the 584 * outgoing fences for a CRTC. Userspace should provide a pointer to a 585 * value of type s32, and then cast that pointer to u64. 586 */ 587 struct drm_property *prop_out_fence_ptr; 588 /** 589 * @prop_crtc_id: Default atomic plane property to specify the 590 * &drm_crtc. 591 */ 592 struct drm_property *prop_crtc_id; 593 /** 594 * @prop_active: Default atomic CRTC property to control the active 595 * state, which is the simplified implementation for DPMS in atomic 596 * drivers. 597 */ 598 struct drm_property *prop_active; 599 /** 600 * @prop_mode_id: Default atomic CRTC property to set the mode for a 601 * CRTC. A 0 mode implies that the CRTC is entirely disabled - all 602 * connectors must be of and active must be set to disabled, too. 603 */ 604 struct drm_property *prop_mode_id; 605 606 /** 607 * @dvi_i_subconnector_property: Optional DVI-I property to 608 * differentiate between analog or digital mode. 609 */ 610 struct drm_property *dvi_i_subconnector_property; 611 /** 612 * @dvi_i_select_subconnector_property: Optional DVI-I property to 613 * select between analog or digital mode. 614 */ 615 struct drm_property *dvi_i_select_subconnector_property; 616 617 /** 618 * @tv_subconnector_property: Optional TV property to differentiate 619 * between different TV connector types. 620 */ 621 struct drm_property *tv_subconnector_property; 622 /** 623 * @tv_select_subconnector_property: Optional TV property to select 624 * between different TV connector types. 625 */ 626 struct drm_property *tv_select_subconnector_property; 627 /** 628 * @tv_mode_property: Optional TV property to select 629 * the output TV mode. 630 */ 631 struct drm_property *tv_mode_property; 632 /** 633 * @tv_left_margin_property: Optional TV property to set the left 634 * margin. 635 */ 636 struct drm_property *tv_left_margin_property; 637 /** 638 * @tv_right_margin_property: Optional TV property to set the right 639 * margin. 640 */ 641 struct drm_property *tv_right_margin_property; 642 /** 643 * @tv_top_margin_property: Optional TV property to set the right 644 * margin. 645 */ 646 struct drm_property *tv_top_margin_property; 647 /** 648 * @tv_bottom_margin_property: Optional TV property to set the right 649 * margin. 650 */ 651 struct drm_property *tv_bottom_margin_property; 652 /** 653 * @tv_brightness_property: Optional TV property to set the 654 * brightness. 655 */ 656 struct drm_property *tv_brightness_property; 657 /** 658 * @tv_contrast_property: Optional TV property to set the 659 * contrast. 660 */ 661 struct drm_property *tv_contrast_property; 662 /** 663 * @tv_flicker_reduction_property: Optional TV property to control the 664 * flicker reduction mode. 665 */ 666 struct drm_property *tv_flicker_reduction_property; 667 /** 668 * @tv_overscan_property: Optional TV property to control the overscan 669 * setting. 670 */ 671 struct drm_property *tv_overscan_property; 672 /** 673 * @tv_saturation_property: Optional TV property to set the 674 * saturation. 675 */ 676 struct drm_property *tv_saturation_property; 677 /** 678 * @tv_hue_property: Optional TV property to set the hue. 679 */ 680 struct drm_property *tv_hue_property; 681 682 /** 683 * @scaling_mode_property: Optional connector property to control the 684 * upscaling, mostly used for built-in panels. 685 */ 686 struct drm_property *scaling_mode_property; 687 /** 688 * @aspect_ratio_property: Optional connector property to control the 689 * HDMI infoframe aspect ratio setting. 690 */ 691 struct drm_property *aspect_ratio_property; 692 /** 693 * @degamma_lut_property: Optional CRTC property to set the LUT used to 694 * convert the framebuffer's colors to linear gamma. 695 */ 696 struct drm_property *degamma_lut_property; 697 /** 698 * @degamma_lut_size_property: Optional CRTC property for the size of 699 * the degamma LUT as supported by the driver (read-only). 700 */ 701 struct drm_property *degamma_lut_size_property; 702 /** 703 * @ctm_property: Optional CRTC property to set the 704 * matrix used to convert colors after the lookup in the 705 * degamma LUT. 706 */ 707 struct drm_property *ctm_property; 708 /** 709 * @gamma_lut_property: Optional CRTC property to set the LUT used to 710 * convert the colors, after the CTM matrix, to the gamma space of the 711 * connected screen. 712 */ 713 struct drm_property *gamma_lut_property; 714 /** 715 * @gamma_lut_size_property: Optional CRTC property for the size of the 716 * gamma LUT as supported by the driver (read-only). 717 */ 718 struct drm_property *gamma_lut_size_property; 719 720 /** 721 * @suggested_x_property: Optional connector property with a hint for 722 * the position of the output on the host's screen. 723 */ 724 struct drm_property *suggested_x_property; 725 /** 726 * @suggested_y_property: Optional connector property with a hint for 727 * the position of the output on the host's screen. 728 */ 729 struct drm_property *suggested_y_property; 730 731 /** 732 * @non_desktop_property: Optional connector property with a hint 733 * that device isn't a standard display, and the console/desktop, 734 * should not be displayed on it. 735 */ 736 struct drm_property *non_desktop_property; 737 738 /* dumb ioctl parameters */ 739 uint32_t preferred_depth, prefer_shadow; 740 741 /** 742 * @async_page_flip: Does this device support async flips on the primary 743 * plane? 744 */ 745 bool async_page_flip; 746 747 /** 748 * @allow_fb_modifiers: 749 * 750 * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call. 751 */ 752 bool allow_fb_modifiers; 753 754 /** 755 * @modifiers: Plane property to list support modifier/format 756 * combination. 757 */ 758 struct drm_property *modifiers_property; 759 760 /* cursor size */ 761 uint32_t cursor_width, cursor_height; 762 763 const struct drm_mode_config_helper_funcs *helper_private; 764 }; 765 766 void drm_mode_config_init(struct drm_device *dev); 767 void drm_mode_config_reset(struct drm_device *dev); 768 void drm_mode_config_cleanup(struct drm_device *dev); 769 770 #endif 771