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 * If the parameters are deemed valid and the backing storage objects in
62 * the underlying memory manager all exist, then the driver allocates
63 * a new &drm_framebuffer structure, subclassed to contain
64 * driver-specific information (like the internal native buffer object
65 * references). It also needs to fill out all relevant metadata, which
66 * should be done by calling drm_helper_mode_fill_fb_struct().
67 *
68 * The initialization is finalized by calling drm_framebuffer_init(),
69 * which registers the framebuffer and makes it accessible to other
70 * threads.
71 *
72 * RETURNS:
73 *
74 * A new framebuffer with an initial reference count of 1 or a negative
75 * error code encoded with ERR_PTR().
76 */
77 struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
78 struct drm_file *file_priv,
79 const struct drm_mode_fb_cmd2 *mode_cmd);
80
81 /**
82 * @get_format_info:
83 *
84 * Allows a driver to return custom format information for special
85 * fb layouts (eg. ones with auxiliary compression control planes).
86 *
87 * RETURNS:
88 *
89 * The format information specific to the given fb metadata, or
90 * NULL if none is found.
91 */
92 const struct drm_format_info *(*get_format_info)(const struct drm_mode_fb_cmd2 *mode_cmd);
93
94 /**
95 * @output_poll_changed:
96 *
97 * Callback used by helpers to inform the driver of output configuration
98 * changes.
99 *
100 * Drivers implementing fbdev emulation with the helpers can call
101 * drm_fb_helper_hotplug_changed from this hook to inform the fbdev
102 * helper of output changes.
103 *
104 * FIXME:
105 *
106 * Except that there's no vtable for device-level helper callbacks
107 * there's no reason this is a core function.
108 */
109 void (*output_poll_changed)(struct drm_device *dev);
110
111 /**
112 * @mode_valid:
113 *
114 * Device specific validation of display modes. Can be used to reject
115 * modes that can never be supported. Only device wide constraints can
116 * be checked here. crtc/encoder/bridge/connector specific constraints
117 * should be checked in the .mode_valid() hook for each specific object.
118 */
119 enum drm_mode_status (*mode_valid)(struct drm_device *dev,
120 const struct drm_display_mode *mode);
121
122 /**
123 * @atomic_check:
124 *
125 * This is the only hook to validate an atomic modeset update. This
126 * function must reject any modeset and state changes which the hardware
127 * or driver doesn't support. This includes but is of course not limited
128 * to:
129 *
130 * - Checking that the modes, framebuffers, scaling and placement
131 * requirements and so on are within the limits of the hardware.
132 *
133 * - Checking that any hidden shared resources are not oversubscribed.
134 * This can be shared PLLs, shared lanes, overall memory bandwidth,
135 * display fifo space (where shared between planes or maybe even
136 * CRTCs).
137 *
138 * - Checking that virtualized resources exported to userspace are not
139 * oversubscribed. For various reasons it can make sense to expose
140 * more planes, crtcs or encoders than which are physically there. One
141 * example is dual-pipe operations (which generally should be hidden
142 * from userspace if when lockstepped in hardware, exposed otherwise),
143 * where a plane might need 1 hardware plane (if it's just on one
144 * pipe), 2 hardware planes (when it spans both pipes) or maybe even
145 * shared a hardware plane with a 2nd plane (if there's a compatible
146 * plane requested on the area handled by the other pipe).
147 *
148 * - Check that any transitional state is possible and that if
149 * requested, the update can indeed be done in the vblank period
150 * without temporarily disabling some functions.
151 *
152 * - Check any other constraints the driver or hardware might have.
153 *
154 * - This callback also needs to correctly fill out the &drm_crtc_state
155 * in this update to make sure that drm_atomic_crtc_needs_modeset()
156 * reflects the nature of the possible update and returns true if and
157 * only if the update cannot be applied without tearing within one
158 * vblank on that CRTC. The core uses that information to reject
159 * updates which require a full modeset (i.e. blanking the screen, or
160 * at least pausing updates for a substantial amount of time) if
161 * userspace has disallowed that in its request.
162 *
163 * - The driver also does not need to repeat basic input validation
164 * like done for the corresponding legacy entry points. The core does
165 * that before calling this hook.
166 *
167 * See the documentation of @atomic_commit for an exhaustive list of
168 * error conditions which don't have to be checked at the in this
169 * callback.
170 *
171 * See the documentation for &struct drm_atomic_state for how exactly
172 * an atomic modeset update is described.
173 *
174 * Drivers using the atomic helpers can implement this hook using
175 * drm_atomic_helper_check(), or one of the exported sub-functions of
176 * it.
177 *
178 * RETURNS:
179 *
180 * 0 on success or one of the below negative error codes:
181 *
182 * - -EINVAL, if any of the above constraints are violated.
183 *
184 * - -EDEADLK, when returned from an attempt to acquire an additional
185 * &drm_modeset_lock through drm_modeset_lock().
186 *
187 * - -ENOMEM, if allocating additional state sub-structures failed due
188 * to lack of memory.
189 *
190 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
191 * This can either be due to a pending signal, or because the driver
192 * needs to completely bail out to recover from an exceptional
193 * situation like a GPU hang. From a userspace point all errors are
194 * treated equally.
195 */
196 int (*atomic_check)(struct drm_device *dev,
197 struct drm_atomic_state *state);
198
199 /**
200 * @atomic_commit:
201 *
202 * This is the only hook to commit an atomic modeset update. The core
203 * guarantees that @atomic_check has been called successfully before
204 * calling this function, and that nothing has been changed in the
205 * interim.
206 *
207 * See the documentation for &struct drm_atomic_state for how exactly
208 * an atomic modeset update is described.
209 *
210 * Drivers using the atomic helpers can implement this hook using
211 * drm_atomic_helper_commit(), or one of the exported sub-functions of
212 * it.
213 *
214 * Nonblocking commits (as indicated with the nonblock parameter) must
215 * do any preparatory work which might result in an unsuccessful commit
216 * in the context of this callback. The only exceptions are hardware
217 * errors resulting in -EIO. But even in that case the driver must
218 * ensure that the display pipe is at least running, to avoid
219 * compositors crashing when pageflips don't work. Anything else,
220 * specifically committing the update to the hardware, should be done
221 * without blocking the caller. For updates which do not require a
222 * modeset this must be guaranteed.
223 *
224 * The driver must wait for any pending rendering to the new
225 * framebuffers to complete before executing the flip. It should also
226 * wait for any pending rendering from other drivers if the underlying
227 * buffer is a shared dma-buf. Nonblocking commits must not wait for
228 * rendering in the context of this callback.
229 *
230 * An application can request to be notified when the atomic commit has
231 * completed. These events are per-CRTC and can be distinguished by the
232 * CRTC index supplied in &drm_event to userspace.
233 *
234 * The drm core will supply a &struct drm_event in each CRTC's
235 * &drm_crtc_state.event. See the documentation for
236 * &drm_crtc_state.event for more details about the precise semantics of
237 * this event.
238 *
239 * NOTE:
240 *
241 * Drivers are not allowed to shut down any display pipe successfully
242 * enabled through an atomic commit on their own. Doing so can result in
243 * compositors crashing if a page flip is suddenly rejected because the
244 * pipe is off.
245 *
246 * RETURNS:
247 *
248 * 0 on success or one of the below negative error codes:
249 *
250 * - -EBUSY, if a nonblocking updated is requested and there is
251 * an earlier updated pending. Drivers are allowed to support a queue
252 * of outstanding updates, but currently no driver supports that.
253 * Note that drivers must wait for preceding updates to complete if a
254 * synchronous update is requested, they are not allowed to fail the
255 * commit in that case.
256 *
257 * - -ENOMEM, if the driver failed to allocate memory. Specifically
258 * this can happen when trying to pin framebuffers, which must only
259 * be done when committing the state.
260 *
261 * - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate
262 * that the driver has run out of vram, iommu space or similar GPU
263 * address space needed for framebuffer.
264 *
265 * - -EIO, if the hardware completely died.
266 *
267 * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
268 * This can either be due to a pending signal, or because the driver
269 * needs to completely bail out to recover from an exceptional
270 * situation like a GPU hang. From a userspace point of view all errors are
271 * treated equally.
272 *
273 * This list is exhaustive. Specifically this hook is not allowed to
274 * return -EINVAL (any invalid requests should be caught in
275 * @atomic_check) or -EDEADLK (this function must not acquire
276 * additional modeset locks).
277 */
278 int (*atomic_commit)(struct drm_device *dev,
279 struct drm_atomic_state *state,
280 bool nonblock);
281
282 /**
283 * @atomic_state_alloc:
284 *
285 * This optional hook can be used by drivers that want to subclass struct
286 * &drm_atomic_state to be able to track their own driver-private global
287 * state easily. If this hook is implemented, drivers must also
288 * implement @atomic_state_clear and @atomic_state_free.
289 *
290 * Subclassing of &drm_atomic_state is deprecated in favour of using
291 * &drm_private_state and &drm_private_obj.
292 *
293 * RETURNS:
294 *
295 * A new &drm_atomic_state on success or NULL on failure.
296 */
297 struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev);
298
299 /**
300 * @atomic_state_clear:
301 *
302 * This hook must clear any driver private state duplicated into the
303 * passed-in &drm_atomic_state. This hook is called when the caller
304 * encountered a &drm_modeset_lock deadlock and needs to drop all
305 * already acquired locks as part of the deadlock avoidance dance
306 * implemented in drm_modeset_backoff().
307 *
308 * Any duplicated state must be invalidated since a concurrent atomic
309 * update might change it, and the drm atomic interfaces always apply
310 * updates as relative changes to the current state.
311 *
312 * Drivers that implement this must call drm_atomic_state_default_clear()
313 * to clear common state.
314 *
315 * Subclassing of &drm_atomic_state is deprecated in favour of using
316 * &drm_private_state and &drm_private_obj.
317 */
318 void (*atomic_state_clear)(struct drm_atomic_state *state);
319
320 /**
321 * @atomic_state_free:
322 *
323 * This hook needs driver private resources and the &drm_atomic_state
324 * itself. Note that the core first calls drm_atomic_state_clear() to
325 * avoid code duplicate between the clear and free hooks.
326 *
327 * Drivers that implement this must call
328 * drm_atomic_state_default_release() to release common resources.
329 *
330 * Subclassing of &drm_atomic_state is deprecated in favour of using
331 * &drm_private_state and &drm_private_obj.
332 */
333 void (*atomic_state_free)(struct drm_atomic_state *state);
334 };
335
336 /**
337 * struct drm_mode_config - Mode configuration control structure
338 * @min_width: minimum fb pixel width on this device
339 * @min_height: minimum fb pixel height on this device
340 * @max_width: maximum fb pixel width on this device
341 * @max_height: maximum fb pixel height on this device
342 * @funcs: core driver provided mode setting functions
343 * @fb_base: base address of the framebuffer
344 * @poll_enabled: track polling support for this device
345 * @poll_running: track polling status for this device
346 * @delayed_event: track delayed poll uevent deliver for this device
347 * @output_poll_work: delayed work for polling in process context
348 * @preferred_depth: preferred RBG pixel depth, used by fb helpers
349 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
350 * @cursor_width: hint to userspace for max cursor width
351 * @cursor_height: hint to userspace for max cursor height
352 * @helper_private: mid-layer private data
353 *
354 * Core mode resource tracking structure. All CRTC, encoders, and connectors
355 * enumerated by the driver are added here, as are global properties. Some
356 * global restrictions are also here, e.g. dimension restrictions.
357 */
358 struct drm_mode_config {
359 /**
360 * @mutex:
361 *
362 * This is the big scary modeset BKL which protects everything that
363 * isn't protect otherwise. Scope is unclear and fuzzy, try to remove
364 * anything from under its protection and move it into more well-scoped
365 * locks.
366 *
367 * The one important thing this protects is the use of @acquire_ctx.
368 */
369 struct mutex mutex;
370
371 /**
372 * @connection_mutex:
373 *
374 * This protects connector state and the connector to encoder to CRTC
375 * routing chain.
376 *
377 * For atomic drivers specifically this protects &drm_connector.state.
378 */
379 struct drm_modeset_lock connection_mutex;
380
381 /**
382 * @acquire_ctx:
383 *
384 * Global implicit acquire context used by atomic drivers for legacy
385 * IOCTLs. Deprecated, since implicit locking contexts make it
386 * impossible to use driver-private &struct drm_modeset_lock. Users of
387 * this must hold @mutex.
388 */
389 struct drm_modeset_acquire_ctx *acquire_ctx;
390
391 /**
392 * @idr_mutex:
393 *
394 * Mutex for KMS ID allocation and management. Protects both @object_idr
395 * and @tile_idr.
396 */
397 struct mutex idr_mutex;
398
399 /**
400 * @object_idr:
401 *
402 * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc,
403 * connector, modes - just makes life easier to have only one.
404 */
405 struct idr object_idr;
406
407 /**
408 * @tile_idr:
409 *
410 * Use this idr for allocating new IDs for tiled sinks like use in some
411 * high-res DP MST screens.
412 */
413 struct idr tile_idr;
414
415 /** @fb_lock: Mutex to protect fb the global @fb_list and @num_fb. */
416 struct mutex fb_lock;
417 /** @num_fb: Number of entries on @fb_list. */
418 int num_fb;
419 /** @fb_list: List of all &struct drm_framebuffer. */
420 struct list_head fb_list;
421
422 /**
423 * @connector_list_lock: Protects @num_connector and
424 * @connector_list and @connector_free_list.
425 */
426 spinlock_t connector_list_lock;
427 /**
428 * @num_connector: Number of connectors on this device. Protected by
429 * @connector_list_lock.
430 */
431 int num_connector;
432 /**
433 * @connector_ida: ID allocator for connector indices.
434 */
435 struct ida connector_ida;
436 /**
437 * @connector_list:
438 *
439 * List of connector objects linked with &drm_connector.head. Protected
440 * by @connector_list_lock. Only use drm_for_each_connector_iter() and
441 * &struct drm_connector_list_iter to walk this list.
442 */
443 struct list_head connector_list;
444 /**
445 * @connector_free_list:
446 *
447 * List of connector objects linked with &drm_connector.free_head.
448 * Protected by @connector_list_lock. Used by
449 * drm_for_each_connector_iter() and
450 * &struct drm_connector_list_iter to savely free connectors using
451 * @connector_free_work.
452 */
453 struct llist_head connector_free_list;
454 /**
455 * @connector_free_work: Work to clean up @connector_free_list.
456 */
457 struct work_struct connector_free_work;
458
459 /**
460 * @num_encoder:
461 *
462 * Number of encoders on this device. This is invariant over the
463 * lifetime of a device and hence doesn't need any locks.
464 */
465 int num_encoder;
466 /**
467 * @encoder_list:
468 *
469 * List of encoder objects linked with &drm_encoder.head. This is
470 * invariant over the lifetime of a device and hence doesn't need any
471 * locks.
472 */
473 struct list_head encoder_list;
474
475 /**
476 * @num_total_plane:
477 *
478 * Number of universal (i.e. with primary/curso) planes on this device.
479 * This is invariant over the lifetime of a device and hence doesn't
480 * need any locks.
481 */
482 int num_total_plane;
483 /**
484 * @plane_list:
485 *
486 * List of plane objects linked with &drm_plane.head. This is invariant
487 * over the lifetime of a device and hence doesn't need any locks.
488 */
489 struct list_head plane_list;
490
491 /**
492 * @num_crtc:
493 *
494 * Number of CRTCs on this device linked with &drm_crtc.head. This is invariant over the lifetime
495 * of a device and hence doesn't need any locks.
496 */
497 int num_crtc;
498 /**
499 * @crtc_list:
500 *
501 * List of CRTC objects linked with &drm_crtc.head. This is invariant
502 * over the lifetime of a device and hence doesn't need any locks.
503 */
504 struct list_head crtc_list;
505
506 /**
507 * @property_list:
508 *
509 * List of property type objects linked with &drm_property.head. This is
510 * invariant over the lifetime of a device and hence doesn't need any
511 * locks.
512 */
513 struct list_head property_list;
514
515 /**
516 * @privobj_list:
517 *
518 * List of private objects linked with &drm_private_obj.head. This is
519 * invariant over the lifetime of a device and hence doesn't need any
520 * locks.
521 */
522 struct list_head privobj_list;
523
524 int min_width, min_height;
525 int max_width, max_height;
526 const struct drm_mode_config_funcs *funcs;
527 resource_size_t fb_base;
528
529 /* output poll support */
530 bool poll_enabled;
531 bool poll_running;
532 bool delayed_event;
533 struct delayed_work output_poll_work;
534
535 /**
536 * @blob_lock:
537 *
538 * Mutex for blob property allocation and management, protects
539 * @property_blob_list and &drm_file.blobs.
540 */
541 struct mutex blob_lock;
542
543 /**
544 * @property_blob_list:
545 *
546 * List of all the blob property objects linked with
547 * &drm_property_blob.head. Protected by @blob_lock.
548 */
549 struct list_head property_blob_list;
550
551 /* pointers to standard properties */
552
553 /**
554 * @edid_property: Default connector property to hold the EDID of the
555 * currently connected sink, if any.
556 */
557 struct drm_property *edid_property;
558 /**
559 * @dpms_property: Default connector property to control the
560 * connector's DPMS state.
561 */
562 struct drm_property *dpms_property;
563 /**
564 * @path_property: Default connector property to hold the DP MST path
565 * for the port.
566 */
567 struct drm_property *path_property;
568 /**
569 * @tile_property: Default connector property to store the tile
570 * position of a tiled screen, for sinks which need to be driven with
571 * multiple CRTCs.
572 */
573 struct drm_property *tile_property;
574 /**
575 * @link_status_property: Default connector property for link status
576 * of a connector
577 */
578 struct drm_property *link_status_property;
579 /**
580 * @plane_type_property: Default plane property to differentiate
581 * CURSOR, PRIMARY and OVERLAY legacy uses of planes.
582 */
583 struct drm_property *plane_type_property;
584 /**
585 * @prop_src_x: Default atomic plane property for the plane source
586 * position in the connected &drm_framebuffer.
587 */
588 struct drm_property *prop_src_x;
589 /**
590 * @prop_src_y: Default atomic plane property for the plane source
591 * position in the connected &drm_framebuffer.
592 */
593 struct drm_property *prop_src_y;
594 /**
595 * @prop_src_w: Default atomic plane property for the plane source
596 * position in the connected &drm_framebuffer.
597 */
598 struct drm_property *prop_src_w;
599 /**
600 * @prop_src_h: Default atomic plane property for the plane source
601 * position in the connected &drm_framebuffer.
602 */
603 struct drm_property *prop_src_h;
604 /**
605 * @prop_crtc_x: Default atomic plane property for the plane destination
606 * position in the &drm_crtc is is being shown on.
607 */
608 struct drm_property *prop_crtc_x;
609 /**
610 * @prop_crtc_y: Default atomic plane property for the plane destination
611 * position in the &drm_crtc is is being shown on.
612 */
613 struct drm_property *prop_crtc_y;
614 /**
615 * @prop_crtc_w: Default atomic plane property for the plane destination
616 * position in the &drm_crtc is is being shown on.
617 */
618 struct drm_property *prop_crtc_w;
619 /**
620 * @prop_crtc_h: Default atomic plane property for the plane destination
621 * position in the &drm_crtc is is being shown on.
622 */
623 struct drm_property *prop_crtc_h;
624 /**
625 * @prop_fb_id: Default atomic plane property to specify the
626 * &drm_framebuffer.
627 */
628 struct drm_property *prop_fb_id;
629 /**
630 * @prop_in_fence_fd: Sync File fd representing the incoming fences
631 * for a Plane.
632 */
633 struct drm_property *prop_in_fence_fd;
634 /**
635 * @prop_out_fence_ptr: Sync File fd pointer representing the
636 * outgoing fences for a CRTC. Userspace should provide a pointer to a
637 * value of type s32, and then cast that pointer to u64.
638 */
639 struct drm_property *prop_out_fence_ptr;
640 /**
641 * @prop_crtc_id: Default atomic plane property to specify the
642 * &drm_crtc.
643 */
644 struct drm_property *prop_crtc_id;
645 /**
646 * @prop_fb_damage_clips: Optional plane property to mark damaged
647 * regions on the plane in framebuffer coordinates of the framebuffer
648 * attached to the plane.
649 *
650 * The layout of blob data is simply an array of &drm_mode_rect. Unlike
651 * plane src coordinates, damage clips are not in 16.16 fixed point.
652 */
653 struct drm_property *prop_fb_damage_clips;
654 /**
655 * @prop_active: Default atomic CRTC property to control the active
656 * state, which is the simplified implementation for DPMS in atomic
657 * drivers.
658 */
659 struct drm_property *prop_active;
660 /**
661 * @prop_mode_id: Default atomic CRTC property to set the mode for a
662 * CRTC. A 0 mode implies that the CRTC is entirely disabled - all
663 * connectors must be of and active must be set to disabled, too.
664 */
665 struct drm_property *prop_mode_id;
666 /**
667 * @prop_vrr_enabled: Default atomic CRTC property to indicate
668 * whether variable refresh rate should be enabled on the CRTC.
669 */
670 struct drm_property *prop_vrr_enabled;
671
672 /**
673 * @dvi_i_subconnector_property: Optional DVI-I property to
674 * differentiate between analog or digital mode.
675 */
676 struct drm_property *dvi_i_subconnector_property;
677 /**
678 * @dvi_i_select_subconnector_property: Optional DVI-I property to
679 * select between analog or digital mode.
680 */
681 struct drm_property *dvi_i_select_subconnector_property;
682
683 /**
684 * @tv_subconnector_property: Optional TV property to differentiate
685 * between different TV connector types.
686 */
687 struct drm_property *tv_subconnector_property;
688 /**
689 * @tv_select_subconnector_property: Optional TV property to select
690 * between different TV connector types.
691 */
692 struct drm_property *tv_select_subconnector_property;
693 /**
694 * @tv_mode_property: Optional TV property to select
695 * the output TV mode.
696 */
697 struct drm_property *tv_mode_property;
698 /**
699 * @tv_left_margin_property: Optional TV property to set the left
700 * margin (expressed in pixels).
701 */
702 struct drm_property *tv_left_margin_property;
703 /**
704 * @tv_right_margin_property: Optional TV property to set the right
705 * margin (expressed in pixels).
706 */
707 struct drm_property *tv_right_margin_property;
708 /**
709 * @tv_top_margin_property: Optional TV property to set the right
710 * margin (expressed in pixels).
711 */
712 struct drm_property *tv_top_margin_property;
713 /**
714 * @tv_bottom_margin_property: Optional TV property to set the right
715 * margin (expressed in pixels).
716 */
717 struct drm_property *tv_bottom_margin_property;
718 /**
719 * @tv_brightness_property: Optional TV property to set the
720 * brightness.
721 */
722 struct drm_property *tv_brightness_property;
723 /**
724 * @tv_contrast_property: Optional TV property to set the
725 * contrast.
726 */
727 struct drm_property *tv_contrast_property;
728 /**
729 * @tv_flicker_reduction_property: Optional TV property to control the
730 * flicker reduction mode.
731 */
732 struct drm_property *tv_flicker_reduction_property;
733 /**
734 * @tv_overscan_property: Optional TV property to control the overscan
735 * setting.
736 */
737 struct drm_property *tv_overscan_property;
738 /**
739 * @tv_saturation_property: Optional TV property to set the
740 * saturation.
741 */
742 struct drm_property *tv_saturation_property;
743 /**
744 * @tv_hue_property: Optional TV property to set the hue.
745 */
746 struct drm_property *tv_hue_property;
747
748 /**
749 * @scaling_mode_property: Optional connector property to control the
750 * upscaling, mostly used for built-in panels.
751 */
752 struct drm_property *scaling_mode_property;
753 /**
754 * @aspect_ratio_property: Optional connector property to control the
755 * HDMI infoframe aspect ratio setting.
756 */
757 struct drm_property *aspect_ratio_property;
758 /**
759 * @content_type_property: Optional connector property to control the
760 * HDMI infoframe content type setting.
761 */
762 struct drm_property *content_type_property;
763 /**
764 * @degamma_lut_property: Optional CRTC property to set the LUT used to
765 * convert the framebuffer's colors to linear gamma.
766 */
767 struct drm_property *degamma_lut_property;
768 /**
769 * @degamma_lut_size_property: Optional CRTC property for the size of
770 * the degamma LUT as supported by the driver (read-only).
771 */
772 struct drm_property *degamma_lut_size_property;
773 /**
774 * @ctm_property: Optional CRTC property to set the
775 * matrix used to convert colors after the lookup in the
776 * degamma LUT.
777 */
778 struct drm_property *ctm_property;
779 /**
780 * @gamma_lut_property: Optional CRTC property to set the LUT used to
781 * convert the colors, after the CTM matrix, to the gamma space of the
782 * connected screen.
783 */
784 struct drm_property *gamma_lut_property;
785 /**
786 * @gamma_lut_size_property: Optional CRTC property for the size of the
787 * gamma LUT as supported by the driver (read-only).
788 */
789 struct drm_property *gamma_lut_size_property;
790
791 /**
792 * @suggested_x_property: Optional connector property with a hint for
793 * the position of the output on the host's screen.
794 */
795 struct drm_property *suggested_x_property;
796 /**
797 * @suggested_y_property: Optional connector property with a hint for
798 * the position of the output on the host's screen.
799 */
800 struct drm_property *suggested_y_property;
801
802 /**
803 * @non_desktop_property: Optional connector property with a hint
804 * that device isn't a standard display, and the console/desktop,
805 * should not be displayed on it.
806 */
807 struct drm_property *non_desktop_property;
808
809 /**
810 * @panel_orientation_property: Optional connector property indicating
811 * how the lcd-panel is mounted inside the casing (e.g. normal or
812 * upside-down).
813 */
814 struct drm_property *panel_orientation_property;
815
816 /**
817 * @writeback_fb_id_property: Property for writeback connectors, storing
818 * the ID of the output framebuffer.
819 * See also: drm_writeback_connector_init()
820 */
821 struct drm_property *writeback_fb_id_property;
822
823 /**
824 * @writeback_pixel_formats_property: Property for writeback connectors,
825 * storing an array of the supported pixel formats for the writeback
826 * engine (read-only).
827 * See also: drm_writeback_connector_init()
828 */
829 struct drm_property *writeback_pixel_formats_property;
830 /**
831 * @writeback_out_fence_ptr_property: Property for writeback connectors,
832 * fd pointer representing the outgoing fences for a writeback
833 * connector. Userspace should provide a pointer to a value of type s32,
834 * and then cast that pointer to u64.
835 * See also: drm_writeback_connector_init()
836 */
837 struct drm_property *writeback_out_fence_ptr_property;
838
839 /**
840 * @hdr_output_metadata_property: Connector property containing hdr
841 * metatada. This will be provided by userspace compositors based
842 * on HDR content
843 */
844 struct drm_property *hdr_output_metadata_property;
845
846 /**
847 * @content_protection_property: DRM ENUM property for content
848 * protection. See drm_connector_attach_content_protection_property().
849 */
850 struct drm_property *content_protection_property;
851
852 /**
853 * @hdcp_content_type_property: DRM ENUM property for type of
854 * Protected Content.
855 */
856 struct drm_property *hdcp_content_type_property;
857
858 /* dumb ioctl parameters */
859 uint32_t preferred_depth, prefer_shadow;
860
861 /**
862 * @prefer_shadow_fbdev:
863 *
864 * Hint to framebuffer emulation to prefer shadow-fb rendering.
865 */
866 bool prefer_shadow_fbdev;
867
868 /**
869 * @quirk_addfb_prefer_xbgr_30bpp:
870 *
871 * Special hack for legacy ADDFB to keep nouveau userspace happy. Should
872 * only ever be set by the nouveau kernel driver.
873 */
874 bool quirk_addfb_prefer_xbgr_30bpp;
875
876 /**
877 * @quirk_addfb_prefer_host_byte_order:
878 *
879 * When set to true drm_mode_addfb() will pick host byte order
880 * pixel_format when calling drm_mode_addfb2(). This is how
881 * drm_mode_addfb() should have worked from day one. It
882 * didn't though, so we ended up with quirks in both kernel
883 * and userspace drivers to deal with the broken behavior.
884 * Simply fixing drm_mode_addfb() unconditionally would break
885 * these drivers, so add a quirk bit here to allow drivers
886 * opt-in.
887 */
888 bool quirk_addfb_prefer_host_byte_order;
889
890 /**
891 * @async_page_flip: Does this device support async flips on the primary
892 * plane?
893 */
894 bool async_page_flip;
895
896 /**
897 * @allow_fb_modifiers:
898 *
899 * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call.
900 */
901 bool allow_fb_modifiers;
902
903 /**
904 * @normalize_zpos:
905 *
906 * If true the drm core will call drm_atomic_normalize_zpos() as part of
907 * atomic mode checking from drm_atomic_helper_check()
908 */
909 bool normalize_zpos;
910
911 /**
912 * @modifiers_property: Plane property to list support modifier/format
913 * combination.
914 */
915 struct drm_property *modifiers_property;
916
917 /* cursor size */
918 uint32_t cursor_width, cursor_height;
919
920 /**
921 * @suspend_state:
922 *
923 * Atomic state when suspended.
924 * Set by drm_mode_config_helper_suspend() and cleared by
925 * drm_mode_config_helper_resume().
926 */
927 struct drm_atomic_state *suspend_state;
928
929 const struct drm_mode_config_helper_funcs *helper_private;
930 };
931
932 void drm_mode_config_init(struct drm_device *dev);
933 void drm_mode_config_reset(struct drm_device *dev);
934 void drm_mode_config_cleanup(struct drm_device *dev);
935
936 #endif