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 #include <linux/llist.h>
31
32 #include <drm/drm_modeset_lock.h>
33
34 struct drm_file;
35 struct drm_device;
36 struct drm_atomic_state;
37 struct drm_mode_fb_cmd2;
38 struct drm_format_info;
39 struct drm_display_mode;
40
41 /**
42 * struct drm_mode_config_funcs - basic driver provided mode setting functions
43 *
44 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
45 * involve drivers.
46 */
47 struct drm_mode_config_funcs {
48 /**
49 * @fb_create:
50 *
51 * Create a new framebuffer object. The core does basic checks on the
52 * requested metadata, but most of that is left to the driver. See
53 * &struct drm_mode_fb_cmd2 for details.
54 *
55 * To validate the pixel format and modifier drivers can use
56 * drm_any_plane_has_format() to make sure at least one plane supports
57 * the requested values. Note that the driver must first determine the
58 * actual modifier used if the request doesn't have it specified,
59 * ie. when (@mode_cmd->flags & DRM_MODE_FB_MODIFIERS) == 0.
60 *
61 * IMPORTANT: These implied modifiers for legacy userspace must be
62 * stored in struct &drm_framebuffer, including all relevant metadata
63 * like &drm_framebuffer.pitches and &drm_framebuffer.offsets if the
64 * modifier enables additional planes beyond the fourcc pixel format
65 * code. This is required by the GETFB2 ioctl.
66 *
67 * If the parameters are deemed valid and the backing storage objects in
68 * the underlying memory manager all exist, then the driver allocates
69 * a new &drm_framebuffer structure, subclassed to contain
70 * driver-specific information (like the internal native buffer object
71 * references). It also needs to fill out all relevant metadata, which
72 * should be done by calling drm_helper_mode_fill_fb_struct().
73 *
74 * The initialization is finalized by calling drm_framebuffer_init(),
75 * which registers the framebuffer and makes it accessible to other
76 * threads.
77 *
78 * RETURNS:
79 *
80 * A new framebuffer with an initial reference count of 1 or a negative
81 * error code encoded with ERR_PTR().
82 */
83 struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
84 struct drm_file *file_priv,
85 const struct drm_mode_fb_cmd2 *mode_cmd);
86
87 /**
88 * @get_format_info:
89 *
90 * Allows a driver to return custom format information for special
91 * fb layouts (eg. ones with auxiliary compression control planes).
92 *
93 * RETURNS:
94 *
95 * The format information specific to the given fb metadata, or
96 * NULL if none is found.
97 */
98 const struct drm_format_info *(*get_format_info)(const struct drm_mode_fb_cmd2 *mode_cmd);
99
100 /**
101 * @output_poll_changed:
102 *
103 * Callback used by helpers to inform the driver of output configuration
104 * changes.
105 *
106 * Drivers implementing fbdev emulation use drm_kms_helper_hotplug_event()
107 * to call this hook to inform the fbdev helper of output changes.
108 *
109 * This hook is deprecated, drivers should instead implement fbdev
110 * support with struct drm_client, which takes care of any necessary
111 * hotplug event forwarding already without further involvement by
112 * the driver.
113 */
114 void (*output_poll_changed)(struct drm_device *dev);
115
116 /**
117 * @mode_valid:
118 *
119 * Device specific validation of display modes. Can be used to reject
120 * modes that can never be supported. Only device wide constraints can
121 * be checked here. crtc/encoder/bridge/connector specific constraints
122 * should be checked in the .mode_valid() hook for each specific object.
123 */
124 enum drm_mode_status (*mode_valid)(struct drm_device *dev,
125 const struct drm_display_mode *mode);
126
127 /**
128 * @atomic_check:
129 *
130 * This is the only hook to validate an atomic modeset update. This
131 * function must reject any modeset and state changes which the hardware
132 * or driver doesn't support. This includes but is of course not limited
133 * to:
134 *
135 * - Checking that the modes, framebuffers, scaling and placement
136 * requirements and so on are within the limits of the hardware.
137 *
138 * - Checking that any hidden shared resources are not oversubscribed.
139 * This can be shared PLLs, shared lanes, overall memory bandwidth,
140 * display fifo space (where shared between planes or maybe even
141 * CRTCs).
142 *
143 * - Checking that virtualized resources exported to userspace are not
144 * oversubscribed. For various reasons it can make sense to expose
145 * more planes, crtcs or encoders than which are physically there. One
146 * example is dual-pipe operations (which generally should be hidden
147 * from userspace if when lockstepped in hardware, exposed otherwise),
148 * where a plane might need 1 hardware plane (if it's just on one
149 * pipe), 2 hardware planes (when it spans both pipes) or maybe even
150 * shared a hardware plane with a 2nd plane (if there's a compatible
151 * plane requested on the area handled by the other pipe).
152 *
153 * - Check that any transitional state is possible and that if
154 * requested, the update can indeed be done in the vblank period
155 * without temporarily disabling some functions.
156 *
157 * - Check any other constraints the driver or hardware might have.
158 *
159 * - This callback also needs to correctly fill out the &drm_crtc_state
160 * in this update to make sure that drm_atomic_crtc_needs_modeset()
161 * reflects the nature of the possible update and returns true if and
162 * only if the update cannot be applied without tearing within one
163 * vblank on that CRTC. The core uses that information to reject
164 * updates which require a full modeset (i.e. blanking the screen, or
165 * at least pausing updates for a substantial amount of time) if
166 * userspace has disallowed that in its request.
167 *
168 * - The driver also does not need to repeat basic input validation
169 * like done for the corresponding legacy entry points. The core does
170 * that before calling this hook.
171 *
172 * See the documentation of @atomic_commit for an exhaustive list of
173 * error conditions which don't have to be checked at the in this
174 * callback.
175 *
176 * See the documentation for &struct drm_atomic_state for how exactly
177 * an atomic modeset update is described.
178 *
179 * Drivers using the atomic helpers can implement this hook using
180 * drm_atomic_helper_check(), or one of the exported sub-functions of
181 * it.
182 *
183 * RETURNS:
184 *
185 * 0 on success or one of the below negative error codes:
186 *
187 * - -EINVAL, if any of the above constraints are violated.
188 *
189 * - -EDEADLK, when returned from an attempt to acquire an additional
190 * &drm_modeset_lock through drm_modeset_lock().
191 *
192 * - -ENOMEM, if allocating additional state sub-structures failed due
193 * to lack of memory.
194 *
195 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
196 * This can either be due to a pending signal, or because the driver
197 * needs to completely bail out to recover from an exceptional
198 * situation like a GPU hang. From a userspace point all errors are
199 * treated equally.
200 */
201 int (*atomic_check)(struct drm_device *dev,
202 struct drm_atomic_state *state);
203
204 /**
205 * @atomic_commit:
206 *
207 * This is the only hook to commit an atomic modeset update. The core
208 * guarantees that @atomic_check has been called successfully before
209 * calling this function, and that nothing has been changed in the
210 * interim.
211 *
212 * See the documentation for &struct drm_atomic_state for how exactly
213 * an atomic modeset update is described.
214 *
215 * Drivers using the atomic helpers can implement this hook using
216 * drm_atomic_helper_commit(), or one of the exported sub-functions of
217 * it.
218 *
219 * Nonblocking commits (as indicated with the nonblock parameter) must
220 * do any preparatory work which might result in an unsuccessful commit
221 * in the context of this callback. The only exceptions are hardware
222 * errors resulting in -EIO. But even in that case the driver must
223 * ensure that the display pipe is at least running, to avoid
224 * compositors crashing when pageflips don't work. Anything else,
225 * specifically committing the update to the hardware, should be done
226 * without blocking the caller. For updates which do not require a
227 * modeset this must be guaranteed.
228 *
229 * The driver must wait for any pending rendering to the new
230 * framebuffers to complete before executing the flip. It should also
231 * wait for any pending rendering from other drivers if the underlying
232 * buffer is a shared dma-buf. Nonblocking commits must not wait for
233 * rendering in the context of this callback.
234 *
235 * An application can request to be notified when the atomic commit has
236 * completed. These events are per-CRTC and can be distinguished by the
237 * CRTC index supplied in &drm_event to userspace.
238 *
239 * The drm core will supply a &struct drm_event in each CRTC's
240 * &drm_crtc_state.event. See the documentation for
241 * &drm_crtc_state.event for more details about the precise semantics of
242 * this event.
243 *
244 * NOTE:
245 *
246 * Drivers are not allowed to shut down any display pipe successfully
247 * enabled through an atomic commit on their own. Doing so can result in
248 * compositors crashing if a page flip is suddenly rejected because the
249 * pipe is off.
250 *
251 * RETURNS:
252 *
253 * 0 on success or one of the below negative error codes:
254 *
255 * - -EBUSY, if a nonblocking updated is requested and there is
256 * an earlier updated pending. Drivers are allowed to support a queue
257 * of outstanding updates, but currently no driver supports that.
258 * Note that drivers must wait for preceding updates to complete if a
259 * synchronous update is requested, they are not allowed to fail the
260 * commit in that case.
261 *
262 * - -ENOMEM, if the driver failed to allocate memory. Specifically
263 * this can happen when trying to pin framebuffers, which must only
264 * be done when committing the state.
265 *
266 * - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate
267 * that the driver has run out of vram, iommu space or similar GPU
268 * address space needed for framebuffer.
269 *
270 * - -EIO, if the hardware completely died.
271 *
272 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
273 * This can either be due to a pending signal, or because the driver
274 * needs to completely bail out to recover from an exceptional
275 * situation like a GPU hang. From a userspace point of view all errors are
276 * treated equally.
277 *
278 * This list is exhaustive. Specifically this hook is not allowed to
279 * return -EINVAL (any invalid requests should be caught in
280 * @atomic_check) or -EDEADLK (this function must not acquire
281 * additional modeset locks).
282 */
283 int (*atomic_commit)(struct drm_device *dev,
284 struct drm_atomic_state *state,
285 bool nonblock);
286
287 /**
288 * @atomic_state_alloc:
289 *
290 * This optional hook can be used by drivers that want to subclass struct
291 * &drm_atomic_state to be able to track their own driver-private global
292 * state easily. If this hook is implemented, drivers must also
293 * implement @atomic_state_clear and @atomic_state_free.
294 *
295 * Subclassing of &drm_atomic_state is deprecated in favour of using
296 * &drm_private_state and &drm_private_obj.
297 *
298 * RETURNS:
299 *
300 * A new &drm_atomic_state on success or NULL on failure.
301 */
302 struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev);
303
304 /**
305 * @atomic_state_clear:
306 *
307 * This hook must clear any driver private state duplicated into the
308 * passed-in &drm_atomic_state. This hook is called when the caller
309 * encountered a &drm_modeset_lock deadlock and needs to drop all
310 * already acquired locks as part of the deadlock avoidance dance
311 * implemented in drm_modeset_backoff().
312 *
313 * Any duplicated state must be invalidated since a concurrent atomic
314 * update might change it, and the drm atomic interfaces always apply
315 * updates as relative changes to the current state.
316 *
317 * Drivers that implement this must call drm_atomic_state_default_clear()
318 * to clear common state.
319 *
320 * Subclassing of &drm_atomic_state is deprecated in favour of using
321 * &drm_private_state and &drm_private_obj.
322 */
323 void (*atomic_state_clear)(struct drm_atomic_state *state);
324
325 /**
326 * @atomic_state_free:
327 *
328 * This hook needs driver private resources and the &drm_atomic_state
329 * itself. Note that the core first calls drm_atomic_state_clear() to
330 * avoid code duplicate between the clear and free hooks.
331 *
332 * Drivers that implement this must call
333 * drm_atomic_state_default_release() to release common resources.
334 *
335 * Subclassing of &drm_atomic_state is deprecated in favour of using
336 * &drm_private_state and &drm_private_obj.
337 */
338 void (*atomic_state_free)(struct drm_atomic_state *state);
339 };
340
341 /**
342 * struct drm_mode_config - Mode configuration control structure
343 * @min_width: minimum fb pixel width on this device
344 * @min_height: minimum fb pixel height on this device
345 * @max_width: maximum fb pixel width on this device
346 * @max_height: maximum fb pixel height on this device
347 * @funcs: core driver provided mode setting functions
348 * @poll_enabled: track polling support for this device
349 * @poll_running: track polling status for this device
350 * @delayed_event: track delayed poll uevent deliver for this device
351 * @output_poll_work: delayed work for polling in process context
352 * @preferred_depth: preferred RBG pixel depth, used by fb helpers
353 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
354 * @cursor_width: hint to userspace for max cursor width
355 * @cursor_height: hint to userspace for max cursor height
356 * @helper_private: mid-layer private data
357 *
358 * Core mode resource tracking structure. All CRTC, encoders, and connectors
359 * enumerated by the driver are added here, as are global properties. Some
360 * global restrictions are also here, e.g. dimension restrictions.
361 *
362 * Framebuffer sizes refer to the virtual screen that can be displayed by
363 * the CRTC. This can be different from the physical resolution programmed.
364 * The minimum width and height, stored in @min_width and @min_height,
365 * describe the smallest size of the framebuffer. It correlates to the
366 * minimum programmable resolution.
367 * The maximum width, stored in @max_width, is typically limited by the
368 * maximum pitch between two adjacent scanlines. The maximum height, stored
369 * in @max_height, is usually only limited by the amount of addressable video
370 * memory. For hardware that has no real maximum, drivers should pick a
371 * reasonable default.
372 *
373 * See also @DRM_SHADOW_PLANE_MAX_WIDTH and @DRM_SHADOW_PLANE_MAX_HEIGHT.
374 */
375 struct drm_mode_config {
376 /**
377 * @mutex:
378 *
379 * This is the big scary modeset BKL which protects everything that
380 * isn't protect otherwise. Scope is unclear and fuzzy, try to remove
381 * anything from under its protection and move it into more well-scoped
382 * locks.
383 *
384 * The one important thing this protects is the use of @acquire_ctx.
385 */
386 struct mutex mutex;
387
388 /**
389 * @connection_mutex:
390 *
391 * This protects connector state and the connector to encoder to CRTC
392 * routing chain.
393 *
394 * For atomic drivers specifically this protects &drm_connector.state.
395 */
396 struct drm_modeset_lock connection_mutex;
397
398 /**
399 * @acquire_ctx:
400 *
401 * Global implicit acquire context used by atomic drivers for legacy
402 * IOCTLs. Deprecated, since implicit locking contexts make it
403 * impossible to use driver-private &struct drm_modeset_lock. Users of
404 * this must hold @mutex.
405 */
406 struct drm_modeset_acquire_ctx *acquire_ctx;
407
408 /**
409 * @idr_mutex:
410 *
411 * Mutex for KMS ID allocation and management. Protects both @object_idr
412 * and @tile_idr.
413 */
414 struct mutex idr_mutex;
415
416 /**
417 * @object_idr:
418 *
419 * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc,
420 * connector, modes - just makes life easier to have only one.
421 */
422 struct idr object_idr;
423
424 /**
425 * @tile_idr:
426 *
427 * Use this idr for allocating new IDs for tiled sinks like use in some
428 * high-res DP MST screens.
429 */
430 struct idr tile_idr;
431
432 /** @fb_lock: Mutex to protect fb the global @fb_list and @num_fb. */
433 struct mutex fb_lock;
434 /** @num_fb: Number of entries on @fb_list. */
435 int num_fb;
436 /** @fb_list: List of all &struct drm_framebuffer. */
437 struct list_head fb_list;
438
439 /**
440 * @connector_list_lock: Protects @num_connector and
441 * @connector_list and @connector_free_list.
442 */
443 spinlock_t connector_list_lock;
444 /**
445 * @num_connector: Number of connectors on this device. Protected by
446 * @connector_list_lock.
447 */
448 int num_connector;
449 /**
450 * @connector_ida: ID allocator for connector indices.
451 */
452 struct ida connector_ida;
453 /**
454 * @connector_list:
455 *
456 * List of connector objects linked with &drm_connector.head. Protected
457 * by @connector_list_lock. Only use drm_for_each_connector_iter() and
458 * &struct drm_connector_list_iter to walk this list.
459 */
460 struct list_head connector_list;
461 /**
462 * @connector_free_list:
463 *
464 * List of connector objects linked with &drm_connector.free_head.
465 * Protected by @connector_list_lock. Used by
466 * drm_for_each_connector_iter() and
467 * &struct drm_connector_list_iter to savely free connectors using
468 * @connector_free_work.
469 */
470 struct llist_head connector_free_list;
471 /**
472 * @connector_free_work: Work to clean up @connector_free_list.
473 */
474 struct work_struct connector_free_work;
475
476 /**
477 * @num_encoder:
478 *
479 * Number of encoders on this device. This is invariant over the
480 * lifetime of a device and hence doesn't need any locks.
481 */
482 int num_encoder;
483 /**
484 * @encoder_list:
485 *
486 * List of encoder objects linked with &drm_encoder.head. This is
487 * invariant over the lifetime of a device and hence doesn't need any
488 * locks.
489 */
490 struct list_head encoder_list;
491
492 /**
493 * @num_total_plane:
494 *
495 * Number of universal (i.e. with primary/curso) planes on this device.
496 * This is invariant over the lifetime of a device and hence doesn't
497 * need any locks.
498 */
499 int num_total_plane;
500 /**
501 * @plane_list:
502 *
503 * List of plane objects linked with &drm_plane.head. This is invariant
504 * over the lifetime of a device and hence doesn't need any locks.
505 */
506 struct list_head plane_list;
507
508 /**
509 * @panic_lock:
510 *
511 * Raw spinlock used to protect critical sections of code that access
512 * the display hardware or modeset software state, which the panic
513 * printing code must be protected against. See drm_panic_trylock(),
514 * drm_panic_lock() and drm_panic_unlock().
515 */
516 struct raw_spinlock panic_lock;
517
518 /**
519 * @num_crtc:
520 *
521 * Number of CRTCs on this device linked with &drm_crtc.head. This is invariant over the lifetime
522 * of a device and hence doesn't need any locks.
523 */
524 int num_crtc;
525 /**
526 * @crtc_list:
527 *
528 * List of CRTC objects linked with &drm_crtc.head. This is invariant
529 * over the lifetime of a device and hence doesn't need any locks.
530 */
531 struct list_head crtc_list;
532
533 /**
534 * @property_list:
535 *
536 * List of property type objects linked with &drm_property.head. This is
537 * invariant over the lifetime of a device and hence doesn't need any
538 * locks.
539 */
540 struct list_head property_list;
541
542 /**
543 * @privobj_list:
544 *
545 * List of private objects linked with &drm_private_obj.head. This is
546 * invariant over the lifetime of a device and hence doesn't need any
547 * locks.
548 */
549 struct list_head privobj_list;
550
551 int min_width, min_height;
552 int max_width, max_height;
553 const struct drm_mode_config_funcs *funcs;
554
555 /* output poll support */
556 bool poll_enabled;
557 bool poll_running;
558 bool delayed_event;
559 struct delayed_work output_poll_work;
560
561 /**
562 * @blob_lock:
563 *
564 * Mutex for blob property allocation and management, protects
565 * @property_blob_list and &drm_file.blobs.
566 */
567 struct mutex blob_lock;
568
569 /**
570 * @property_blob_list:
571 *
572 * List of all the blob property objects linked with
573 * &drm_property_blob.head. Protected by @blob_lock.
574 */
575 struct list_head property_blob_list;
576
577 /* pointers to standard properties */
578
579 /**
580 * @edid_property: Default connector property to hold the EDID of the
581 * currently connected sink, if any.
582 */
583 struct drm_property *edid_property;
584 /**
585 * @dpms_property: Default connector property to control the
586 * connector's DPMS state.
587 */
588 struct drm_property *dpms_property;
589 /**
590 * @path_property: Default connector property to hold the DP MST path
591 * for the port.
592 */
593 struct drm_property *path_property;
594 /**
595 * @tile_property: Default connector property to store the tile
596 * position of a tiled screen, for sinks which need to be driven with
597 * multiple CRTCs.
598 */
599 struct drm_property *tile_property;
600 /**
601 * @link_status_property: Default connector property for link status
602 * of a connector
603 */
604 struct drm_property *link_status_property;
605 /**
606 * @plane_type_property: Default plane property to differentiate
607 * CURSOR, PRIMARY and OVERLAY legacy uses of planes.
608 */
609 struct drm_property *plane_type_property;
610 /**
611 * @prop_src_x: Default atomic plane property for the plane source
612 * position in the connected &drm_framebuffer.
613 */
614 struct drm_property *prop_src_x;
615 /**
616 * @prop_src_y: Default atomic plane property for the plane source
617 * position in the connected &drm_framebuffer.
618 */
619 struct drm_property *prop_src_y;
620 /**
621 * @prop_src_w: Default atomic plane property for the plane source
622 * position in the connected &drm_framebuffer.
623 */
624 struct drm_property *prop_src_w;
625 /**
626 * @prop_src_h: Default atomic plane property for the plane source
627 * position in the connected &drm_framebuffer.
628 */
629 struct drm_property *prop_src_h;
630 /**
631 * @prop_crtc_x: Default atomic plane property for the plane destination
632 * position in the &drm_crtc is being shown on.
633 */
634 struct drm_property *prop_crtc_x;
635 /**
636 * @prop_crtc_y: Default atomic plane property for the plane destination
637 * position in the &drm_crtc is being shown on.
638 */
639 struct drm_property *prop_crtc_y;
640 /**
641 * @prop_crtc_w: Default atomic plane property for the plane destination
642 * position in the &drm_crtc is being shown on.
643 */
644 struct drm_property *prop_crtc_w;
645 /**
646 * @prop_crtc_h: Default atomic plane property for the plane destination
647 * position in the &drm_crtc is being shown on.
648 */
649 struct drm_property *prop_crtc_h;
650 /**
651 * @prop_fb_id: Default atomic plane property to specify the
652 * &drm_framebuffer.
653 */
654 struct drm_property *prop_fb_id;
655 /**
656 * @prop_in_fence_fd: Sync File fd representing the incoming fences
657 * for a Plane.
658 */
659 struct drm_property *prop_in_fence_fd;
660 /**
661 * @prop_out_fence_ptr: Sync File fd pointer representing the
662 * outgoing fences for a CRTC. Userspace should provide a pointer to a
663 * value of type s32, and then cast that pointer to u64.
664 */
665 struct drm_property *prop_out_fence_ptr;
666 /**
667 * @prop_crtc_id: Default atomic plane property to specify the
668 * &drm_crtc.
669 */
670 struct drm_property *prop_crtc_id;
671 /**
672 * @prop_fb_damage_clips: Optional plane property to mark damaged
673 * regions on the plane in framebuffer coordinates of the framebuffer
674 * attached to the plane.
675 *
676 * The layout of blob data is simply an array of &drm_mode_rect. Unlike
677 * plane src coordinates, damage clips are not in 16.16 fixed point.
678 */
679 struct drm_property *prop_fb_damage_clips;
680 /**
681 * @prop_active: Default atomic CRTC property to control the active
682 * state, which is the simplified implementation for DPMS in atomic
683 * drivers.
684 */
685 struct drm_property *prop_active;
686 /**
687 * @prop_mode_id: Default atomic CRTC property to set the mode for a
688 * CRTC. A 0 mode implies that the CRTC is entirely disabled - all
689 * connectors must be of and active must be set to disabled, too.
690 */
691 struct drm_property *prop_mode_id;
692 /**
693 * @prop_vrr_enabled: Default atomic CRTC property to indicate
694 * whether variable refresh rate should be enabled on the CRTC.
695 */
696 struct drm_property *prop_vrr_enabled;
697
698 /**
699 * @dvi_i_subconnector_property: Optional DVI-I property to
700 * differentiate between analog or digital mode.
701 */
702 struct drm_property *dvi_i_subconnector_property;
703 /**
704 * @dvi_i_select_subconnector_property: Optional DVI-I property to
705 * select between analog or digital mode.
706 */
707 struct drm_property *dvi_i_select_subconnector_property;
708
709 /**
710 * @dp_subconnector_property: Optional DP property to differentiate
711 * between different DP downstream port types.
712 */
713 struct drm_property *dp_subconnector_property;
714
715 /**
716 * @tv_subconnector_property: Optional TV property to differentiate
717 * between different TV connector types.
718 */
719 struct drm_property *tv_subconnector_property;
720 /**
721 * @tv_select_subconnector_property: Optional TV property to select
722 * between different TV connector types.
723 */
724 struct drm_property *tv_select_subconnector_property;
725
726 /**
727 * @legacy_tv_mode_property: Optional TV property to select
728 * the output TV mode.
729 *
730 * Superseded by @tv_mode_property
731 */
732 struct drm_property *legacy_tv_mode_property;
733
734 /**
735 * @tv_mode_property: Optional TV property to select the TV
736 * standard output on the connector.
737 */
738 struct drm_property *tv_mode_property;
739
740 /**
741 * @tv_left_margin_property: Optional TV property to set the left
742 * margin (expressed in pixels).
743 */
744 struct drm_property *tv_left_margin_property;
745 /**
746 * @tv_right_margin_property: Optional TV property to set the right
747 * margin (expressed in pixels).
748 */
749 struct drm_property *tv_right_margin_property;
750 /**
751 * @tv_top_margin_property: Optional TV property to set the right
752 * margin (expressed in pixels).
753 */
754 struct drm_property *tv_top_margin_property;
755 /**
756 * @tv_bottom_margin_property: Optional TV property to set the right
757 * margin (expressed in pixels).
758 */
759 struct drm_property *tv_bottom_margin_property;
760 /**
761 * @tv_brightness_property: Optional TV property to set the
762 * brightness.
763 */
764 struct drm_property *tv_brightness_property;
765 /**
766 * @tv_contrast_property: Optional TV property to set the
767 * contrast.
768 */
769 struct drm_property *tv_contrast_property;
770 /**
771 * @tv_flicker_reduction_property: Optional TV property to control the
772 * flicker reduction mode.
773 */
774 struct drm_property *tv_flicker_reduction_property;
775 /**
776 * @tv_overscan_property: Optional TV property to control the overscan
777 * setting.
778 */
779 struct drm_property *tv_overscan_property;
780 /**
781 * @tv_saturation_property: Optional TV property to set the
782 * saturation.
783 */
784 struct drm_property *tv_saturation_property;
785 /**
786 * @tv_hue_property: Optional TV property to set the hue.
787 */
788 struct drm_property *tv_hue_property;
789
790 /**
791 * @scaling_mode_property: Optional connector property to control the
792 * upscaling, mostly used for built-in panels.
793 */
794 struct drm_property *scaling_mode_property;
795 /**
796 * @aspect_ratio_property: Optional connector property to control the
797 * HDMI infoframe aspect ratio setting.
798 */
799 struct drm_property *aspect_ratio_property;
800 /**
801 * @content_type_property: Optional connector property to control the
802 * HDMI infoframe content type setting.
803 */
804 struct drm_property *content_type_property;
805 /**
806 * @degamma_lut_property: Optional CRTC property to set the LUT used to
807 * convert the framebuffer's colors to linear gamma.
808 */
809 struct drm_property *degamma_lut_property;
810 /**
811 * @degamma_lut_size_property: Optional CRTC property for the size of
812 * the degamma LUT as supported by the driver (read-only).
813 */
814 struct drm_property *degamma_lut_size_property;
815 /**
816 * @ctm_property: Optional CRTC property to set the
817 * matrix used to convert colors after the lookup in the
818 * degamma LUT.
819 */
820 struct drm_property *ctm_property;
821 /**
822 * @gamma_lut_property: Optional CRTC property to set the LUT used to
823 * convert the colors, after the CTM matrix, to the gamma space of the
824 * connected screen.
825 */
826 struct drm_property *gamma_lut_property;
827 /**
828 * @gamma_lut_size_property: Optional CRTC property for the size of the
829 * gamma LUT as supported by the driver (read-only).
830 */
831 struct drm_property *gamma_lut_size_property;
832
833 /**
834 * @suggested_x_property: Optional connector property with a hint for
835 * the position of the output on the host's screen.
836 */
837 struct drm_property *suggested_x_property;
838 /**
839 * @suggested_y_property: Optional connector property with a hint for
840 * the position of the output on the host's screen.
841 */
842 struct drm_property *suggested_y_property;
843
844 /**
845 * @non_desktop_property: Optional connector property with a hint
846 * that device isn't a standard display, and the console/desktop,
847 * should not be displayed on it.
848 */
849 struct drm_property *non_desktop_property;
850
851 /**
852 * @panel_orientation_property: Optional connector property indicating
853 * how the lcd-panel is mounted inside the casing (e.g. normal or
854 * upside-down).
855 */
856 struct drm_property *panel_orientation_property;
857
858 /**
859 * @writeback_fb_id_property: Property for writeback connectors, storing
860 * the ID of the output framebuffer.
861 * See also: drm_writeback_connector_init()
862 */
863 struct drm_property *writeback_fb_id_property;
864
865 /**
866 * @writeback_pixel_formats_property: Property for writeback connectors,
867 * storing an array of the supported pixel formats for the writeback
868 * engine (read-only).
869 * See also: drm_writeback_connector_init()
870 */
871 struct drm_property *writeback_pixel_formats_property;
872 /**
873 * @writeback_out_fence_ptr_property: Property for writeback connectors,
874 * fd pointer representing the outgoing fences for a writeback
875 * connector. Userspace should provide a pointer to a value of type s32,
876 * and then cast that pointer to u64.
877 * See also: drm_writeback_connector_init()
878 */
879 struct drm_property *writeback_out_fence_ptr_property;
880
881 /**
882 * @hdr_output_metadata_property: Connector property containing hdr
883 * metatada. This will be provided by userspace compositors based
884 * on HDR content
885 */
886 struct drm_property *hdr_output_metadata_property;
887
888 /**
889 * @content_protection_property: DRM ENUM property for content
890 * protection. See drm_connector_attach_content_protection_property().
891 */
892 struct drm_property *content_protection_property;
893
894 /**
895 * @hdcp_content_type_property: DRM ENUM property for type of
896 * Protected Content.
897 */
898 struct drm_property *hdcp_content_type_property;
899
900 /* dumb ioctl parameters */
901 uint32_t preferred_depth, prefer_shadow;
902
903 /**
904 * @quirk_addfb_prefer_xbgr_30bpp:
905 *
906 * Special hack for legacy ADDFB to keep nouveau userspace happy. Should
907 * only ever be set by the nouveau kernel driver.
908 */
909 bool quirk_addfb_prefer_xbgr_30bpp;
910
911 /**
912 * @quirk_addfb_prefer_host_byte_order:
913 *
914 * When set to true drm_mode_addfb() will pick host byte order
915 * pixel_format when calling drm_mode_addfb2(). This is how
916 * drm_mode_addfb() should have worked from day one. It
917 * didn't though, so we ended up with quirks in both kernel
918 * and userspace drivers to deal with the broken behavior.
919 * Simply fixing drm_mode_addfb() unconditionally would break
920 * these drivers, so add a quirk bit here to allow drivers
921 * opt-in.
922 */
923 bool quirk_addfb_prefer_host_byte_order;
924
925 /**
926 * @async_page_flip: Does this device support async flips on the primary
927 * plane?
928 */
929 bool async_page_flip;
930
931 /**
932 * @fb_modifiers_not_supported:
933 *
934 * When this flag is set, the DRM device will not expose modifier
935 * support to userspace. This is only used by legacy drivers that infer
936 * the buffer layout through heuristics without using modifiers. New
937 * drivers shall not set fhis flag.
938 */
939 bool fb_modifiers_not_supported;
940
941 /**
942 * @normalize_zpos:
943 *
944 * If true the drm core will call drm_atomic_normalize_zpos() as part of
945 * atomic mode checking from drm_atomic_helper_check()
946 */
947 bool normalize_zpos;
948
949 /**
950 * @modifiers_property: Plane property to list support modifier/format
951 * combination.
952 */
953 struct drm_property *modifiers_property;
954
955 /**
956 * @size_hints_property: Plane SIZE_HINTS property.
957 */
958 struct drm_property *size_hints_property;
959
960 /* cursor size */
961 uint32_t cursor_width, cursor_height;
962
963 /**
964 * @suspend_state:
965 *
966 * Atomic state when suspended.
967 * Set by drm_mode_config_helper_suspend() and cleared by
968 * drm_mode_config_helper_resume().
969 */
970 struct drm_atomic_state *suspend_state;
971
972 const struct drm_mode_config_helper_funcs *helper_private;
973 };
974
975 int __must_check drmm_mode_config_init(struct drm_device *dev);
976
977 /**
978 * drm_mode_config_init - DRM mode_configuration structure initialization
979 * @dev: DRM device
980 *
981 * This is the unmanaged version of drmm_mode_config_init() for drivers which
982 * still explicitly call drm_mode_config_cleanup().
983 *
984 * FIXME: This function is deprecated and drivers should be converted over to
985 * drmm_mode_config_init().
986 */
987 static inline int drm_mode_config_init(struct drm_device *dev)
988 {
989 return drmm_mode_config_init(dev);
990 }
991
992 void drm_mode_config_reset(struct drm_device *dev);
993 void drm_mode_config_cleanup(struct drm_device *dev);
994
995 #endif
996
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