summaryrefslogtreecommitdiff
path: root/include/drm/drm_mode_config.h
blob: 26ff46ab26fb829d57ebc2cc4de8d25059ea5a99 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
/*
 * Copyright (c) 2016 Intel Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */

#ifndef __DRM_MODE_CONFIG_H__
#define __DRM_MODE_CONFIG_H__

#include <linux/mutex.h>
#include <linux/types.h>
#include <linux/idr.h>
#include <linux/workqueue.h>

#include <drm/drm_modeset_lock.h>

struct drm_file;
struct drm_device;
struct drm_atomic_state;
struct drm_mode_fb_cmd2;

/**
 * struct drm_mode_config_funcs - basic driver provided mode setting functions
 *
 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
 * involve drivers.
 */
struct drm_mode_config_funcs {
	/**
	 * @fb_create:
	 *
	 * Create a new framebuffer object. The core does basic checks on the
	 * requested metadata, but most of that is left to the driver. See
	 * &struct drm_mode_fb_cmd2 for details.
	 *
	 * If the parameters are deemed valid and the backing storage objects in
	 * the underlying memory manager all exist, then the driver allocates
	 * a new &drm_framebuffer structure, subclassed to contain
	 * driver-specific information (like the internal native buffer object
	 * references). It also needs to fill out all relevant metadata, which
	 * should be done by calling drm_helper_mode_fill_fb_struct().
	 *
	 * The initialization is finalized by calling drm_framebuffer_init(),
	 * which registers the framebuffer and makes it accessible to other
	 * threads.
	 *
	 * RETURNS:
	 *
	 * A new framebuffer with an initial reference count of 1 or a negative
	 * error code encoded with ERR_PTR().
	 */
	struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
					     struct drm_file *file_priv,
					     const struct drm_mode_fb_cmd2 *mode_cmd);

	/**
	 * @output_poll_changed:
	 *
	 * Callback used by helpers to inform the driver of output configuration
	 * changes.
	 *
	 * Drivers implementing fbdev emulation with the helpers can call
	 * drm_fb_helper_hotplug_changed from this hook to inform the fbdev
	 * helper of output changes.
	 *
	 * FIXME:
	 *
	 * Except that there's no vtable for device-level helper callbacks
	 * there's no reason this is a core function.
	 */
	void (*output_poll_changed)(struct drm_device *dev);

	/**
	 * @atomic_check:
	 *
	 * This is the only hook to validate an atomic modeset update. This
	 * function must reject any modeset and state changes which the hardware
	 * or driver doesn't support. This includes but is of course not limited
	 * to:
	 *
	 *  - Checking that the modes, framebuffers, scaling and placement
	 *    requirements and so on are within the limits of the hardware.
	 *
	 *  - Checking that any hidden shared resources are not oversubscribed.
	 *    This can be shared PLLs, shared lanes, overall memory bandwidth,
	 *    display fifo space (where shared between planes or maybe even
	 *    CRTCs).
	 *
	 *  - Checking that virtualized resources exported to userspace are not
	 *    oversubscribed. For various reasons it can make sense to expose
	 *    more planes, crtcs or encoders than which are physically there. One
	 *    example is dual-pipe operations (which generally should be hidden
	 *    from userspace if when lockstepped in hardware, exposed otherwise),
	 *    where a plane might need 1 hardware plane (if it's just on one
	 *    pipe), 2 hardware planes (when it spans both pipes) or maybe even
	 *    shared a hardware plane with a 2nd plane (if there's a compatible
	 *    plane requested on the area handled by the other pipe).
	 *
	 *  - Check that any transitional state is possible and that if
	 *    requested, the update can indeed be done in the vblank period
	 *    without temporarily disabling some functions.
	 *
	 *  - Check any other constraints the driver or hardware might have.
	 *
	 *  - This callback also needs to correctly fill out the &drm_crtc_state
	 *    in this update to make sure that drm_atomic_crtc_needs_modeset()
	 *    reflects the nature of the possible update and returns true if and
	 *    only if the update cannot be applied without tearing within one
	 *    vblank on that CRTC. The core uses that information to reject
	 *    updates which require a full modeset (i.e. blanking the screen, or
	 *    at least pausing updates for a substantial amount of time) if
	 *    userspace has disallowed that in its request.
	 *
	 *  - The driver also does not need to repeat basic input validation
	 *    like done for the corresponding legacy entry points. The core does
	 *    that before calling this hook.
	 *
	 * See the documentation of @atomic_commit for an exhaustive list of
	 * error conditions which don't have to be checked at the in this
	 * callback.
	 *
	 * See the documentation for &struct drm_atomic_state for how exactly
	 * an atomic modeset update is described.
	 *
	 * Drivers using the atomic helpers can implement this hook using
	 * drm_atomic_helper_check(), or one of the exported sub-functions of
	 * it.
	 *
	 * RETURNS:
	 *
	 * 0 on success or one of the below negative error codes:
	 *
	 *  - -EINVAL, if any of the above constraints are violated.
	 *
	 *  - -EDEADLK, when returned from an attempt to acquire an additional
	 *    &drm_modeset_lock through drm_modeset_lock().
	 *
	 *  - -ENOMEM, if allocating additional state sub-structures failed due
	 *    to lack of memory.
	 *
	 *  - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
	 *    This can either be due to a pending signal, or because the driver
	 *    needs to completely bail out to recover from an exceptional
	 *    situation like a GPU hang. From a userspace point all errors are
	 *    treated equally.
	 */
	int (*atomic_check)(struct drm_device *dev,
			    struct drm_atomic_state *state);

	/**
	 * @atomic_commit:
	 *
	 * This is the only hook to commit an atomic modeset update. The core
	 * guarantees that @atomic_check has been called successfully before
	 * calling this function, and that nothing has been changed in the
	 * interim.
	 *
	 * See the documentation for &struct drm_atomic_state for how exactly
	 * an atomic modeset update is described.
	 *
	 * Drivers using the atomic helpers can implement this hook using
	 * drm_atomic_helper_commit(), or one of the exported sub-functions of
	 * it.
	 *
	 * Nonblocking commits (as indicated with the nonblock parameter) must
	 * do any preparatory work which might result in an unsuccessful commit
	 * in the context of this callback. The only exceptions are hardware
	 * errors resulting in -EIO. But even in that case the driver must
	 * ensure that the display pipe is at least running, to avoid
	 * compositors crashing when pageflips don't work. Anything else,
	 * specifically committing the update to the hardware, should be done
	 * without blocking the caller. For updates which do not require a
	 * modeset this must be guaranteed.
	 *
	 * The driver must wait for any pending rendering to the new
	 * framebuffers to complete before executing the flip. It should also
	 * wait for any pending rendering from other drivers if the underlying
	 * buffer is a shared dma-buf. Nonblocking commits must not wait for
	 * rendering in the context of this callback.
	 *
	 * An application can request to be notified when the atomic commit has
	 * completed. These events are per-CRTC and can be distinguished by the
	 * CRTC index supplied in &drm_event to userspace.
	 *
	 * The drm core will supply a &struct drm_event in each CRTC's
	 * &drm_crtc_state.event. See the documentation for
	 * &drm_crtc_state.event for more details about the precise semantics of
	 * this event.
	 *
	 * NOTE:
	 *
	 * Drivers are not allowed to shut down any display pipe successfully
	 * enabled through an atomic commit on their own. Doing so can result in
	 * compositors crashing if a page flip is suddenly rejected because the
	 * pipe is off.
	 *
	 * RETURNS:
	 *
	 * 0 on success or one of the below negative error codes:
	 *
	 *  - -EBUSY, if a nonblocking updated is requested and there is
	 *    an earlier updated pending. Drivers are allowed to support a queue
	 *    of outstanding updates, but currently no driver supports that.
	 *    Note that drivers must wait for preceding updates to complete if a
	 *    synchronous update is requested, they are not allowed to fail the
	 *    commit in that case.
	 *
	 *  - -ENOMEM, if the driver failed to allocate memory. Specifically
	 *    this can happen when trying to pin framebuffers, which must only
	 *    be done when committing the state.
	 *
	 *  - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate
	 *    that the driver has run out of vram, iommu space or similar GPU
	 *    address space needed for framebuffer.
	 *
	 *  - -EIO, if the hardware completely died.
	 *
	 *  - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted.
	 *    This can either be due to a pending signal, or because the driver
	 *    needs to completely bail out to recover from an exceptional
	 *    situation like a GPU hang. From a userspace point of view all errors are
	 *    treated equally.
	 *
	 * This list is exhaustive. Specifically this hook is not allowed to
	 * return -EINVAL (any invalid requests should be caught in
	 * @atomic_check) or -EDEADLK (this function must not acquire
	 * additional modeset locks).
	 */
	int (*atomic_commit)(struct drm_device *dev,
			     struct drm_atomic_state *state,
			     bool nonblock);

	/**
	 * @atomic_state_alloc:
	 *
	 * This optional hook can be used by drivers that want to subclass struct
	 * &drm_atomic_state to be able to track their own driver-private global
	 * state easily. If this hook is implemented, drivers must also
	 * implement @atomic_state_clear and @atomic_state_free.
	 *
	 * RETURNS:
	 *
	 * A new &drm_atomic_state on success or NULL on failure.
	 */
	struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev);

	/**
	 * @atomic_state_clear:
	 *
	 * This hook must clear any driver private state duplicated into the
	 * passed-in &drm_atomic_state. This hook is called when the caller
	 * encountered a &drm_modeset_lock deadlock and needs to drop all
	 * already acquired locks as part of the deadlock avoidance dance
	 * implemented in drm_modeset_lock_backoff().
	 *
	 * Any duplicated state must be invalidated since a concurrent atomic
	 * update might change it, and the drm atomic interfaces always apply
	 * updates as relative changes to the current state.
	 *
	 * Drivers that implement this must call drm_atomic_state_default_clear()
	 * to clear common state.
	 */
	void (*atomic_state_clear)(struct drm_atomic_state *state);

	/**
	 * @atomic_state_free:
	 *
	 * This hook needs driver private resources and the &drm_atomic_state
	 * itself. Note that the core first calls drm_atomic_state_clear() to
	 * avoid code duplicate between the clear and free hooks.
	 *
	 * Drivers that implement this must call drm_atomic_state_default_free()
	 * to release common resources.
	 */
	void (*atomic_state_free)(struct drm_atomic_state *state);
};

/**
 * struct drm_mode_config - Mode configuration control structure
 * @mutex: mutex protecting KMS related lists and structures
 * @connection_mutex: ww mutex protecting connector state and routing
 * @acquire_ctx: global implicit acquire context used by atomic drivers for
 * 	legacy IOCTLs
 * @fb_lock: mutex to protect fb state and lists
 * @num_fb: number of fbs available
 * @fb_list: list of framebuffers available
 * @num_encoder: number of encoders on this device
 * @encoder_list: list of encoder objects
 * @num_overlay_plane: number of overlay planes on this device
 * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device
 * @plane_list: list of plane objects
 * @num_crtc: number of CRTCs on this device
 * @crtc_list: list of CRTC objects
 * @property_list: list of property objects
 * @min_width: minimum pixel width on this device
 * @min_height: minimum pixel height on this device
 * @max_width: maximum pixel width on this device
 * @max_height: maximum pixel height on this device
 * @funcs: core driver provided mode setting functions
 * @fb_base: base address of the framebuffer
 * @poll_enabled: track polling support for this device
 * @poll_running: track polling status for this device
 * @delayed_event: track delayed poll uevent deliver for this device
 * @output_poll_work: delayed work for polling in process context
 * @property_blob_list: list of all the blob property objects
 * @blob_lock: mutex for blob property allocation and management
 * @*_property: core property tracking
 * @preferred_depth: preferred RBG pixel depth, used by fb helpers
 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
 * @cursor_width: hint to userspace for max cursor width
 * @cursor_height: hint to userspace for max cursor height
 * @helper_private: mid-layer private data
 *
 * Core mode resource tracking structure.  All CRTC, encoders, and connectors
 * enumerated by the driver are added here, as are global properties.  Some
 * global restrictions are also here, e.g. dimension restrictions.
 */
struct drm_mode_config {
	struct mutex mutex; /* protects configuration (mode lists etc.) */
	struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */
	struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */

	/**
	 * @idr_mutex:
	 *
	 * Mutex for KMS ID allocation and management. Protects both @crtc_idr
	 * and @tile_idr.
	 */
	struct mutex idr_mutex;

	/**
	 * @crtc_idr:
	 *
	 * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc,
	 * connector, modes - just makes life easier to have only one.
	 */
	struct idr crtc_idr;

	/**
	 * @tile_idr:
	 *
	 * Use this idr for allocating new IDs for tiled sinks like use in some
	 * high-res DP MST screens.
	 */
	struct idr tile_idr;

	struct mutex fb_lock; /* proctects global and per-file fb lists */
	int num_fb;
	struct list_head fb_list;

	/**
	 * @connector_list_lock: Protects @num_connector and
	 * @connector_list.
	 */
	spinlock_t connector_list_lock;
	/**
	 * @num_connector: Number of connectors on this device. Protected by
	 * @connector_list_lock.
	 */
	int num_connector;
	/**
	 * @connector_ida: ID allocator for connector indices.
	 */
	struct ida connector_ida;
	/**
	 * @connector_list: List of connector objects. Protected by
	 * @connector_list_lock. Only use drm_for_each_connector_iter() and
	 * &struct drm_connector_list_iter to walk this list.
	 */
	struct list_head connector_list;
	int num_encoder;
	struct list_head encoder_list;

	/*
	 * Track # of overlay planes separately from # of total planes.  By
	 * default we only advertise overlay planes to userspace; if userspace
	 * sets the "universal plane" capability bit, we'll go ahead and
	 * expose all planes.
	 */
	int num_overlay_plane;
	int num_total_plane;
	struct list_head plane_list;

	int num_crtc;
	struct list_head crtc_list;

	struct list_head property_list;

	int min_width, min_height;
	int max_width, max_height;
	const struct drm_mode_config_funcs *funcs;
	resource_size_t fb_base;

	/* output poll support */
	bool poll_enabled;
	bool poll_running;
	bool delayed_event;
	struct delayed_work output_poll_work;

	struct mutex blob_lock;

	/* pointers to standard properties */
	struct list_head property_blob_list;
	/**
	 * @edid_property: Default connector property to hold the EDID of the
	 * currently connected sink, if any.
	 */
	struct drm_property *edid_property;
	/**
	 * @dpms_property: Default connector property to control the
	 * connector's DPMS state.
	 */
	struct drm_property *dpms_property;
	/**
	 * @path_property: Default connector property to hold the DP MST path
	 * for the port.
	 */
	struct drm_property *path_property;
	/**
	 * @tile_property: Default connector property to store the tile
	 * position of a tiled screen, for sinks which need to be driven with
	 * multiple CRTCs.
	 */
	struct drm_property *tile_property;
	/**
	 * @plane_type_property: Default plane property to differentiate
	 * CURSOR, PRIMARY and OVERLAY legacy uses of planes.
	 */
	struct drm_property *plane_type_property;
	/**
	 * @prop_src_x: Default atomic plane property for the plane source
	 * position in the connected &drm_framebuffer.
	 */
	struct drm_property *prop_src_x;
	/**
	 * @prop_src_y: Default atomic plane property for the plane source
	 * position in the connected &drm_framebuffer.
	 */
	struct drm_property *prop_src_y;
	/**
	 * @prop_src_w: Default atomic plane property for the plane source
	 * position in the connected &drm_framebuffer.
	 */
	struct drm_property *prop_src_w;
	/**
	 * @prop_src_h: Default atomic plane property for the plane source
	 * position in the connected &drm_framebuffer.
	 */
	struct drm_property *prop_src_h;
	/**
	 * @prop_crtc_x: Default atomic plane property for the plane destination
	 * position in the &drm_crtc is is being shown on.
	 */
	struct drm_property *prop_crtc_x;
	/**
	 * @prop_crtc_y: Default atomic plane property for the plane destination
	 * position in the &drm_crtc is is being shown on.
	 */
	struct drm_property *prop_crtc_y;
	/**
	 * @prop_crtc_w: Default atomic plane property for the plane destination
	 * position in the &drm_crtc is is being shown on.
	 */
	struct drm_property *prop_crtc_w;
	/**
	 * @prop_crtc_h: Default atomic plane property for the plane destination
	 * position in the &drm_crtc is is being shown on.
	 */
	struct drm_property *prop_crtc_h;
	/**
	 * @prop_fb_id: Default atomic plane property to specify the
	 * &drm_framebuffer.
	 */
	struct drm_property *prop_fb_id;
	/**
	 * @prop_in_fence_fd: Sync File fd representing the incoming fences
	 * for a Plane.
	 */
	struct drm_property *prop_in_fence_fd;
	/**
	 * @prop_out_fence_ptr: Sync File fd pointer representing the
	 * outgoing fences for a CRTC. Userspace should provide a pointer to a
	 * value of type s32, and then cast that pointer to u64.
	 */
	struct drm_property *prop_out_fence_ptr;
	/**
	 * @prop_crtc_id: Default atomic plane property to specify the
	 * &drm_crtc.
	 */
	struct drm_property *prop_crtc_id;
	/**
	 * @prop_active: Default atomic CRTC property to control the active
	 * state, which is the simplified implementation for DPMS in atomic
	 * drivers.
	 */
	struct drm_property *prop_active;
	/**
	 * @prop_mode_id: Default atomic CRTC property to set the mode for a
	 * CRTC. A 0 mode implies that the CRTC is entirely disabled - all
	 * connectors must be of and active must be set to disabled, too.
	 */
	struct drm_property *prop_mode_id;

	/**
	 * @dvi_i_subconnector_property: Optional DVI-I property to
	 * differentiate between analog or digital mode.
	 */
	struct drm_property *dvi_i_subconnector_property;
	/**
	 * @dvi_i_select_subconnector_property: Optional DVI-I property to
	 * select between analog or digital mode.
	 */
	struct drm_property *dvi_i_select_subconnector_property;

	/**
	 * @tv_subconnector_property: Optional TV property to differentiate
	 * between different TV connector types.
	 */
	struct drm_property *tv_subconnector_property;
	/**
	 * @tv_select_subconnector_property: Optional TV property to select
	 * between different TV connector types.
	 */
	struct drm_property *tv_select_subconnector_property;
	/**
	 * @tv_mode_property: Optional TV property to select
	 * the output TV mode.
	 */
	struct drm_property *tv_mode_property;
	/**
	 * @tv_left_margin_property: Optional TV property to set the left
	 * margin.
	 */
	struct drm_property *tv_left_margin_property;
	/**
	 * @tv_right_margin_property: Optional TV property to set the right
	 * margin.
	 */
	struct drm_property *tv_right_margin_property;
	/**
	 * @tv_top_margin_property: Optional TV property to set the right
	 * margin.
	 */
	struct drm_property *tv_top_margin_property;
	/**
	 * @tv_bottom_margin_property: Optional TV property to set the right
	 * margin.
	 */
	struct drm_property *tv_bottom_margin_property;
	/**
	 * @tv_brightness_property: Optional TV property to set the
	 * brightness.
	 */
	struct drm_property *tv_brightness_property;
	/**
	 * @tv_contrast_property: Optional TV property to set the
	 * contrast.
	 */
	struct drm_property *tv_contrast_property;
	/**
	 * @tv_flicker_reduction_property: Optional TV property to control the
	 * flicker reduction mode.
	 */
	struct drm_property *tv_flicker_reduction_property;
	/**
	 * @tv_overscan_property: Optional TV property to control the overscan
	 * setting.
	 */
	struct drm_property *tv_overscan_property;
	/**
	 * @tv_saturation_property: Optional TV property to set the
	 * saturation.
	 */
	struct drm_property *tv_saturation_property;
	/**
	 * @tv_hue_property: Optional TV property to set the hue.
	 */
	struct drm_property *tv_hue_property;

	/**
	 * @scaling_mode_property: Optional connector property to control the
	 * upscaling, mostly used for built-in panels.
	 */
	struct drm_property *scaling_mode_property;
	/**
	 * @aspect_ratio_property: Optional connector property to control the
	 * HDMI infoframe aspect ratio setting.
	 */
	struct drm_property *aspect_ratio_property;
	/**
	 * @degamma_lut_property: Optional CRTC property to set the LUT used to
	 * convert the framebuffer's colors to linear gamma.
	 */
	struct drm_property *degamma_lut_property;
	/**
	 * @degamma_lut_size_property: Optional CRTC property for the size of
	 * the degamma LUT as supported by the driver (read-only).
	 */
	struct drm_property *degamma_lut_size_property;
	/**
	 * @ctm_property: Optional CRTC property to set the
	 * matrix used to convert colors after the lookup in the
	 * degamma LUT.
	 */
	struct drm_property *ctm_property;
	/**
	 * @gamma_lut_property: Optional CRTC property to set the LUT used to
	 * convert the colors, after the CTM matrix, to the gamma space of the
	 * connected screen.
	 */
	struct drm_property *gamma_lut_property;
	/**
	 * @gamma_lut_size_property: Optional CRTC property for the size of the
	 * gamma LUT as supported by the driver (read-only).
	 */
	struct drm_property *gamma_lut_size_property;

	/**
	 * @suggested_x_property: Optional connector property with a hint for
	 * the position of the output on the host's screen.
	 */
	struct drm_property *suggested_x_property;
	/**
	 * @suggested_y_property: Optional connector property with a hint for
	 * the position of the output on the host's screen.
	 */
	struct drm_property *suggested_y_property;

	/* dumb ioctl parameters */
	uint32_t preferred_depth, prefer_shadow;

	/**
	 * @async_page_flip: Does this device support async flips on the primary
	 * plane?
	 */
	bool async_page_flip;

	/**
	 * @allow_fb_modifiers:
	 *
	 * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call.
	 */
	bool allow_fb_modifiers;

	/* cursor size */
	uint32_t cursor_width, cursor_height;

	struct drm_mode_config_helper_funcs *helper_private;
};

void drm_mode_config_init(struct drm_device *dev);
void drm_mode_config_reset(struct drm_device *dev);
void drm_mode_config_cleanup(struct drm_device *dev);

#endif