drm_crtc.c 71.4 KB
Newer Older
Dave Airlie's avatar
Dave Airlie committed
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
/*
 * Copyright (c) 2006-2008 Intel Corporation
 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
 * Copyright (c) 2008 Red Hat Inc.
 *
 * DRM core CRTC related functions
 *
 * 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.
 *
 * Authors:
 *      Keith Packard
 *	Eric Anholt <eric@anholt.net>
 *      Dave Airlie <airlied@linux.ie>
 *      Jesse Barnes <jesse.barnes@intel.com>
 */
#include <linux/list.h>
33
#include <linux/slab.h>
Dave Airlie's avatar
Dave Airlie committed
34
35
36
#include "drm.h"
#include "drmP.h"
#include "drm_crtc.h"
37
#include "drm_edid.h"
Dave Airlie's avatar
Dave Airlie committed
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

struct drm_prop_enum_list {
	int type;
	char *name;
};

/* Avoid boilerplate.  I'm tired of typing. */
#define DRM_ENUM_NAME_FN(fnname, list)				\
	char *fnname(int val)					\
	{							\
		int i;						\
		for (i = 0; i < ARRAY_SIZE(list); i++) {	\
			if (list[i].type == val)		\
				return list[i].name;		\
		}						\
		return "(unknown)";				\
	}

/*
 * Global properties
 */
static struct drm_prop_enum_list drm_dpms_enum_list[] =
{	{ DRM_MODE_DPMS_ON, "On" },
	{ DRM_MODE_DPMS_STANDBY, "Standby" },
	{ DRM_MODE_DPMS_SUSPEND, "Suspend" },
	{ DRM_MODE_DPMS_OFF, "Off" }
};

DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)

/*
 * Optional properties
 */
static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
{
73
74
75
76
	{ DRM_MODE_SCALE_NONE, "None" },
	{ DRM_MODE_SCALE_FULLSCREEN, "Full" },
	{ DRM_MODE_SCALE_CENTER, "Center" },
	{ DRM_MODE_SCALE_ASPECT, "Full aspect" },
Dave Airlie's avatar
Dave Airlie committed
77
78
79
80
81
82
};

static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
{
	{ DRM_MODE_DITHERING_OFF, "Off" },
	{ DRM_MODE_DITHERING_ON, "On" },
Ben Skeggs's avatar
Ben Skeggs committed
83
	{ DRM_MODE_DITHERING_AUTO, "Automatic" },
Dave Airlie's avatar
Dave Airlie committed
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
};

/*
 * Non-global properties, but "required" for certain connectors.
 */
static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
{
	{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
	{ DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
	{ DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
};

DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)

static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
{
	{ DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
	{ DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
	{ DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
};

DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
		 drm_dvi_i_subconnector_enum_list)

static struct drm_prop_enum_list drm_tv_select_enum_list[] =
{
	{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
	{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
	{ DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
	{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
114
	{ DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
Dave Airlie's avatar
Dave Airlie committed
115
116
117
118
119
120
121
122
123
124
};

DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)

static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
{
	{ DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
	{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
	{ DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
	{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125
	{ DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
Dave Airlie's avatar
Dave Airlie committed
126
127
128
129
130
};

DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
		 drm_tv_subconnector_enum_list)

131
132
133
134
135
136
137
138
139
static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
	{ DRM_MODE_DIRTY_OFF,      "Off"      },
	{ DRM_MODE_DIRTY_ON,       "On"       },
	{ DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
};

DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
		 drm_dirty_info_enum_list)

Dave Airlie's avatar
Dave Airlie committed
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
struct drm_conn_prop_enum_list {
	int type;
	char *name;
	int count;
};

/*
 * Connector and encoder types.
 */
static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
{	{ DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
	{ DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
	{ DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
	{ DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
	{ DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
	{ DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
	{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
	{ DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
	{ DRM_MODE_CONNECTOR_Component, "Component", 0 },
159
160
161
162
	{ DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
	{ DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
	{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
	{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
163
	{ DRM_MODE_CONNECTOR_TV, "TV", 0 },
164
	{ DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
165
	{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
Dave Airlie's avatar
Dave Airlie committed
166
167
168
169
170
171
172
173
};

static struct drm_prop_enum_list drm_encoder_enum_list[] =
{	{ DRM_MODE_ENCODER_NONE, "None" },
	{ DRM_MODE_ENCODER_DAC, "DAC" },
	{ DRM_MODE_ENCODER_TMDS, "TMDS" },
	{ DRM_MODE_ENCODER_LVDS, "LVDS" },
	{ DRM_MODE_ENCODER_TVDAC, "TV" },
174
	{ DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
Dave Airlie's avatar
Dave Airlie committed
175
176
177
178
179
180
181
182
183
184
185
};

char *drm_get_encoder_name(struct drm_encoder *encoder)
{
	static char buf[32];

	snprintf(buf, 32, "%s-%d",
		 drm_encoder_enum_list[encoder->encoder_type].name,
		 encoder->base.id);
	return buf;
}
186
EXPORT_SYMBOL(drm_get_encoder_name);
Dave Airlie's avatar
Dave Airlie committed
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

char *drm_get_connector_name(struct drm_connector *connector)
{
	static char buf[32];

	snprintf(buf, 32, "%s-%d",
		 drm_connector_enum_list[connector->connector_type].name,
		 connector->connector_type_id);
	return buf;
}
EXPORT_SYMBOL(drm_get_connector_name);

char *drm_get_connector_status_name(enum drm_connector_status status)
{
	if (status == connector_status_connected)
		return "connected";
	else if (status == connector_status_disconnected)
		return "disconnected";
	else
		return "unknown";
}

/**
 * drm_mode_object_get - allocate a new identifier
 * @dev: DRM device
 * @ptr: object pointer, used to generate unique ID
 * @type: object type
 *
 * LOCKING:
 *
 * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 * for tracking modes, CRTCs and connectors.
 *
 * RETURNS:
 * New unique (relative to other objects in @dev) integer identifier for the
 * object.
 */
static int drm_mode_object_get(struct drm_device *dev,
			       struct drm_mode_object *obj, uint32_t obj_type)
{
	int new_id = 0;
	int ret;

again:
	if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
		DRM_ERROR("Ran out memory getting a mode number\n");
		return -EINVAL;
	}

236
	mutex_lock(&dev->mode_config.idr_mutex);
Dave Airlie's avatar
Dave Airlie committed
237
	ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
238
	mutex_unlock(&dev->mode_config.idr_mutex);
Dave Airlie's avatar
Dave Airlie committed
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
	if (ret == -EAGAIN)
		goto again;

	obj->id = new_id;
	obj->type = obj_type;
	return 0;
}

/**
 * drm_mode_object_put - free an identifer
 * @dev: DRM device
 * @id: ID to free
 *
 * LOCKING:
 * Caller must hold DRM mode_config lock.
 *
 * Free @id from @dev's unique identifier pool.
 */
static void drm_mode_object_put(struct drm_device *dev,
				struct drm_mode_object *object)
{
260
	mutex_lock(&dev->mode_config.idr_mutex);
Dave Airlie's avatar
Dave Airlie committed
261
	idr_remove(&dev->mode_config.crtc_idr, object->id);
262
	mutex_unlock(&dev->mode_config.idr_mutex);
Dave Airlie's avatar
Dave Airlie committed
263
264
}

265
266
struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
		uint32_t id, uint32_t type)
Dave Airlie's avatar
Dave Airlie committed
267
{
268
	struct drm_mode_object *obj = NULL;
Dave Airlie's avatar
Dave Airlie committed
269

270
	mutex_lock(&dev->mode_config.idr_mutex);
Dave Airlie's avatar
Dave Airlie committed
271
272
	obj = idr_find(&dev->mode_config.crtc_idr, id);
	if (!obj || (obj->type != type) || (obj->id != id))
273
274
		obj = NULL;
	mutex_unlock(&dev->mode_config.idr_mutex);
Dave Airlie's avatar
Dave Airlie committed
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290

	return obj;
}
EXPORT_SYMBOL(drm_mode_object_find);

/**
 * drm_framebuffer_init - initialize a framebuffer
 * @dev: DRM device
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Allocates an ID for the framebuffer's parent mode object, sets its mode
 * functions & device file and adds it to the master fd list.
 *
 * RETURNS:
291
 * Zero on success, error code on failure.
Dave Airlie's avatar
Dave Airlie committed
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
 */
int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
			 const struct drm_framebuffer_funcs *funcs)
{
	int ret;

	ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
	if (ret) {
		return ret;
	}

	fb->dev = dev;
	fb->funcs = funcs;
	dev->mode_config.num_fb++;
	list_add(&fb->head, &dev->mode_config.fb_list);

	return 0;
}
EXPORT_SYMBOL(drm_framebuffer_init);

/**
 * drm_framebuffer_cleanup - remove a framebuffer object
 * @fb: framebuffer to remove
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 * it, setting it to NULL.
 */
void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
{
	struct drm_device *dev = fb->dev;
	struct drm_crtc *crtc;
326
327
	struct drm_mode_set set;
	int ret;
Dave Airlie's avatar
Dave Airlie committed
328
329
330

	/* remove from any CRTC */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
331
332
333
334
335
336
337
338
339
		if (crtc->fb == fb) {
			/* should turn off the crtc */
			memset(&set, 0, sizeof(struct drm_mode_set));
			set.crtc = crtc;
			set.fb = NULL;
			ret = crtc->funcs->set_config(&set);
			if (ret)
				DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
		}
Dave Airlie's avatar
Dave Airlie committed
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
	}

	drm_mode_object_put(dev, &fb->base);
	list_del(&fb->head);
	dev->mode_config.num_fb--;
}
EXPORT_SYMBOL(drm_framebuffer_cleanup);

/**
 * drm_crtc_init - Initialise a new CRTC object
 * @dev: DRM device
 * @crtc: CRTC object to init
 * @funcs: callbacks for the new CRTC
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Inits a new object created as base part of an driver crtc object.
 */
void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
		   const struct drm_crtc_funcs *funcs)
{
	crtc->dev = dev;
	crtc->funcs = funcs;

	mutex_lock(&dev->mode_config.mutex);
	drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);

	list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
	dev->mode_config.num_crtc++;
	mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_crtc_init);

/**
 * drm_crtc_cleanup - Cleans up the core crtc usage.
 * @crtc: CRTC to cleanup
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Cleanup @crtc. Removes from drm modesetting space
 * does NOT free object, caller does that.
 */
void drm_crtc_cleanup(struct drm_crtc *crtc)
{
	struct drm_device *dev = crtc->dev;

	if (crtc->gamma_store) {
		kfree(crtc->gamma_store);
		crtc->gamma_store = NULL;
	}

	drm_mode_object_put(dev, &crtc->base);
	list_del(&crtc->head);
	dev->mode_config.num_crtc--;
}
EXPORT_SYMBOL(drm_crtc_cleanup);

/**
 * drm_mode_probed_add - add a mode to a connector's probed mode list
 * @connector: connector the new mode
 * @mode: mode data
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Add @mode to @connector's mode list for later use.
 */
void drm_mode_probed_add(struct drm_connector *connector,
			 struct drm_display_mode *mode)
{
	list_add(&mode->head, &connector->probed_modes);
}
EXPORT_SYMBOL(drm_mode_probed_add);

/**
 * drm_mode_remove - remove and free a mode
 * @connector: connector list to modify
 * @mode: mode to remove
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Remove @mode from @connector's mode list, then free it.
 */
void drm_mode_remove(struct drm_connector *connector,
		     struct drm_display_mode *mode)
{
	list_del(&mode->head);
	kfree(mode);
}
EXPORT_SYMBOL(drm_mode_remove);

/**
 * drm_connector_init - Init a preallocated connector
 * @dev: DRM device
 * @connector: the connector to init
 * @funcs: callbacks for this connector
 * @name: user visible name of the connector
 *
 * LOCKING:
 * Caller must hold @dev's mode_config lock.
 *
 * Initialises a preallocated connector. Connectors should be
 * subclassed as part of driver connector objects.
 */
void drm_connector_init(struct drm_device *dev,
		     struct drm_connector *connector,
		     const struct drm_connector_funcs *funcs,
		     int connector_type)
{
	mutex_lock(&dev->mode_config.mutex);

	connector->dev = dev;
	connector->funcs = funcs;
	drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
	connector->connector_type = connector_type;
	connector->connector_type_id =
		++drm_connector_enum_list[connector_type].count; /* TODO */
	INIT_LIST_HEAD(&connector->user_modes);
	INIT_LIST_HEAD(&connector->probed_modes);
	INIT_LIST_HEAD(&connector->modes);
	connector->edid_blob_ptr = NULL;

	list_add_tail(&connector->head, &dev->mode_config.connector_list);
	dev->mode_config.num_connector++;

468
469
470
471
	if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
		drm_connector_attach_property(connector,
					      dev->mode_config.edid_property,
					      0);
Dave Airlie's avatar
Dave Airlie committed
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

	drm_connector_attach_property(connector,
				      dev->mode_config.dpms_property, 0);

	mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_connector_init);

/**
 * drm_connector_cleanup - cleans up an initialised connector
 * @connector: connector to cleanup
 *
 * LOCKING:
 * Caller must hold @dev's mode_config lock.
 *
 * Cleans up the connector but doesn't free the object.
 */
void drm_connector_cleanup(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct drm_display_mode *mode, *t;

	list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
		drm_mode_remove(connector, mode);

	list_for_each_entry_safe(mode, t, &connector->modes, head)
		drm_mode_remove(connector, mode);

	list_for_each_entry_safe(mode, t, &connector->user_modes, head)
		drm_mode_remove(connector, mode);

	mutex_lock(&dev->mode_config.mutex);
	drm_mode_object_put(dev, &connector->base);
	list_del(&connector->head);
506
	dev->mode_config.num_connector--;
Dave Airlie's avatar
Dave Airlie committed
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
	mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_connector_cleanup);

void drm_encoder_init(struct drm_device *dev,
		      struct drm_encoder *encoder,
		      const struct drm_encoder_funcs *funcs,
		      int encoder_type)
{
	mutex_lock(&dev->mode_config.mutex);

	encoder->dev = dev;

	drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
	encoder->encoder_type = encoder_type;
	encoder->funcs = funcs;

	list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
	dev->mode_config.num_encoder++;

	mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_encoder_init);

void drm_encoder_cleanup(struct drm_encoder *encoder)
{
	struct drm_device *dev = encoder->dev;
	mutex_lock(&dev->mode_config.mutex);
	drm_mode_object_put(dev, &encoder->base);
	list_del(&encoder->head);
537
	dev->mode_config.num_encoder--;
Dave Airlie's avatar
Dave Airlie committed
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
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
	mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_encoder_cleanup);

/**
 * drm_mode_create - create a new display mode
 * @dev: DRM device
 *
 * LOCKING:
 * Caller must hold DRM mode_config lock.
 *
 * Create a new drm_display_mode, give it an ID, and return it.
 *
 * RETURNS:
 * Pointer to new mode on success, NULL on error.
 */
struct drm_display_mode *drm_mode_create(struct drm_device *dev)
{
	struct drm_display_mode *nmode;

	nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
	if (!nmode)
		return NULL;

	drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
	return nmode;
}
EXPORT_SYMBOL(drm_mode_create);

/**
 * drm_mode_destroy - remove a mode
 * @dev: DRM device
 * @mode: mode to remove
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Free @mode's unique identifier, then free it.
 */
void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
{
	drm_mode_object_put(dev, &mode->base);

	kfree(mode);
}
EXPORT_SYMBOL(drm_mode_destroy);

static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
{
	struct drm_property *edid;
	struct drm_property *dpms;
	int i;

	/*
	 * Standard properties (apply to all connectors)
	 */
	edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
				   DRM_MODE_PROP_IMMUTABLE,
				   "EDID", 0);
	dev->mode_config.edid_property = edid;

	dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
				   "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
		drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
				      drm_dpms_enum_list[i].name);
	dev->mode_config.dpms_property = dpms;

	return 0;
}

/**
 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 * @dev: DRM device
 *
 * Called by a driver the first time a DVI-I connector is made.
 */
int drm_mode_create_dvi_i_properties(struct drm_device *dev)
{
	struct drm_property *dvi_i_selector;
	struct drm_property *dvi_i_subconnector;
	int i;

	if (dev->mode_config.dvi_i_select_subconnector_property)
		return 0;

	dvi_i_selector =
		drm_property_create(dev, DRM_MODE_PROP_ENUM,
				    "select subconnector",
				    ARRAY_SIZE(drm_dvi_i_select_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
		drm_property_add_enum(dvi_i_selector, i,
				      drm_dvi_i_select_enum_list[i].type,
				      drm_dvi_i_select_enum_list[i].name);
	dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;

	dvi_i_subconnector =
		drm_property_create(dev, DRM_MODE_PROP_ENUM |
				    DRM_MODE_PROP_IMMUTABLE,
				    "subconnector",
				    ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
		drm_property_add_enum(dvi_i_subconnector, i,
				      drm_dvi_i_subconnector_enum_list[i].type,
				      drm_dvi_i_subconnector_enum_list[i].name);
	dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;

	return 0;
}
EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);

/**
 * drm_create_tv_properties - create TV specific connector properties
 * @dev: DRM device
 * @num_modes: number of different TV formats (modes) supported
 * @modes: array of pointers to strings containing name of each format
 *
 * Called by a driver's TV initialization routine, this function creates
 * the TV specific connector properties for a given device.  Caller is
 * responsible for allocating a list of format names and passing them to
 * this routine.
 */
int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
				  char *modes[])
{
	struct drm_property *tv_selector;
	struct drm_property *tv_subconnector;
	int i;

	if (dev->mode_config.tv_select_subconnector_property)
		return 0;

	/*
	 * Basic connector properties
	 */
	tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
					  "select subconnector",
					  ARRAY_SIZE(drm_tv_select_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
		drm_property_add_enum(tv_selector, i,
				      drm_tv_select_enum_list[i].type,
				      drm_tv_select_enum_list[i].name);
	dev->mode_config.tv_select_subconnector_property = tv_selector;

	tv_subconnector =
		drm_property_create(dev, DRM_MODE_PROP_ENUM |
				    DRM_MODE_PROP_IMMUTABLE, "subconnector",
				    ARRAY_SIZE(drm_tv_subconnector_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
		drm_property_add_enum(tv_subconnector, i,
				      drm_tv_subconnector_enum_list[i].type,
				      drm_tv_subconnector_enum_list[i].name);
	dev->mode_config.tv_subconnector_property = tv_subconnector;

	/*
	 * Other, TV specific properties: margins & TV modes.
	 */
	dev->mode_config.tv_left_margin_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "left margin", 2);
	dev->mode_config.tv_left_margin_property->values[0] = 0;
	dev->mode_config.tv_left_margin_property->values[1] = 100;

	dev->mode_config.tv_right_margin_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "right margin", 2);
	dev->mode_config.tv_right_margin_property->values[0] = 0;
	dev->mode_config.tv_right_margin_property->values[1] = 100;

	dev->mode_config.tv_top_margin_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "top margin", 2);
	dev->mode_config.tv_top_margin_property->values[0] = 0;
	dev->mode_config.tv_top_margin_property->values[1] = 100;

	dev->mode_config.tv_bottom_margin_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "bottom margin", 2);
	dev->mode_config.tv_bottom_margin_property->values[0] = 0;
	dev->mode_config.tv_bottom_margin_property->values[1] = 100;

	dev->mode_config.tv_mode_property =
		drm_property_create(dev, DRM_MODE_PROP_ENUM,
				    "mode", num_modes);
	for (i = 0; i < num_modes; i++)
		drm_property_add_enum(dev->mode_config.tv_mode_property, i,
				      i, modes[i]);

726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
	dev->mode_config.tv_brightness_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "brightness", 2);
	dev->mode_config.tv_brightness_property->values[0] = 0;
	dev->mode_config.tv_brightness_property->values[1] = 100;

	dev->mode_config.tv_contrast_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "contrast", 2);
	dev->mode_config.tv_contrast_property->values[0] = 0;
	dev->mode_config.tv_contrast_property->values[1] = 100;

	dev->mode_config.tv_flicker_reduction_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "flicker reduction", 2);
	dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
	dev->mode_config.tv_flicker_reduction_property->values[1] = 100;

744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
	dev->mode_config.tv_overscan_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "overscan", 2);
	dev->mode_config.tv_overscan_property->values[0] = 0;
	dev->mode_config.tv_overscan_property->values[1] = 100;

	dev->mode_config.tv_saturation_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "saturation", 2);
	dev->mode_config.tv_saturation_property->values[0] = 0;
	dev->mode_config.tv_saturation_property->values[1] = 100;

	dev->mode_config.tv_hue_property =
		drm_property_create(dev, DRM_MODE_PROP_RANGE,
				    "hue", 2);
	dev->mode_config.tv_hue_property->values[0] = 0;
	dev->mode_config.tv_hue_property->values[1] = 100;

Dave Airlie's avatar
Dave Airlie committed
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
	return 0;
}
EXPORT_SYMBOL(drm_mode_create_tv_properties);

/**
 * drm_mode_create_scaling_mode_property - create scaling mode property
 * @dev: DRM device
 *
 * Called by a driver the first time it's needed, must be attached to desired
 * connectors.
 */
int drm_mode_create_scaling_mode_property(struct drm_device *dev)
{
	struct drm_property *scaling_mode;
	int i;

	if (dev->mode_config.scaling_mode_property)
		return 0;

	scaling_mode =
		drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
				    ARRAY_SIZE(drm_scaling_mode_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
		drm_property_add_enum(scaling_mode, i,
				      drm_scaling_mode_enum_list[i].type,
				      drm_scaling_mode_enum_list[i].name);

	dev->mode_config.scaling_mode_property = scaling_mode;

	return 0;
}
EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);

/**
 * drm_mode_create_dithering_property - create dithering property
 * @dev: DRM device
 *
 * Called by a driver the first time it's needed, must be attached to desired
 * connectors.
 */
int drm_mode_create_dithering_property(struct drm_device *dev)
{
	struct drm_property *dithering_mode;
	int i;

	if (dev->mode_config.dithering_mode_property)
		return 0;

	dithering_mode =
		drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
				    ARRAY_SIZE(drm_dithering_mode_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
		drm_property_add_enum(dithering_mode, i,
				      drm_dithering_mode_enum_list[i].type,
				      drm_dithering_mode_enum_list[i].name);
	dev->mode_config.dithering_mode_property = dithering_mode;

	return 0;
}
EXPORT_SYMBOL(drm_mode_create_dithering_property);

823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
/**
 * drm_mode_create_dirty_property - create dirty property
 * @dev: DRM device
 *
 * Called by a driver the first time it's needed, must be attached to desired
 * connectors.
 */
int drm_mode_create_dirty_info_property(struct drm_device *dev)
{
	struct drm_property *dirty_info;
	int i;

	if (dev->mode_config.dirty_info_property)
		return 0;

	dirty_info =
		drm_property_create(dev, DRM_MODE_PROP_ENUM |
				    DRM_MODE_PROP_IMMUTABLE,
				    "dirty",
				    ARRAY_SIZE(drm_dirty_info_enum_list));
	for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
		drm_property_add_enum(dirty_info, i,
				      drm_dirty_info_enum_list[i].type,
				      drm_dirty_info_enum_list[i].name);
	dev->mode_config.dirty_info_property = dirty_info;

	return 0;
}
EXPORT_SYMBOL(drm_mode_create_dirty_info_property);

Dave Airlie's avatar
Dave Airlie committed
853
854
855
856
857
858
859
860
861
862
863
864
865
/**
 * drm_mode_config_init - initialize DRM mode_configuration structure
 * @dev: DRM device
 *
 * LOCKING:
 * None, should happen single threaded at init time.
 *
 * Initialize @dev's mode_config structure, used for tracking the graphics
 * configuration of @dev.
 */
void drm_mode_config_init(struct drm_device *dev)
{
	mutex_init(&dev->mode_config.mutex);
866
	mutex_init(&dev->mode_config.idr_mutex);
Dave Airlie's avatar
Dave Airlie committed
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
	INIT_LIST_HEAD(&dev->mode_config.fb_list);
	INIT_LIST_HEAD(&dev->mode_config.crtc_list);
	INIT_LIST_HEAD(&dev->mode_config.connector_list);
	INIT_LIST_HEAD(&dev->mode_config.encoder_list);
	INIT_LIST_HEAD(&dev->mode_config.property_list);
	INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
	idr_init(&dev->mode_config.crtc_idr);

	mutex_lock(&dev->mode_config.mutex);
	drm_mode_create_standard_connector_properties(dev);
	mutex_unlock(&dev->mode_config.mutex);

	/* Just to be sure */
	dev->mode_config.num_fb = 0;
	dev->mode_config.num_connector = 0;
	dev->mode_config.num_crtc = 0;
	dev->mode_config.num_encoder = 0;
}
EXPORT_SYMBOL(drm_mode_config_init);

int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
{
	uint32_t total_objects = 0;

	total_objects += dev->mode_config.num_crtc;
	total_objects += dev->mode_config.num_connector;
	total_objects += dev->mode_config.num_encoder;

	group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
	if (!group->id_list)
		return -ENOMEM;

	group->num_crtcs = 0;
	group->num_connectors = 0;
	group->num_encoders = 0;
	return 0;
}

int drm_mode_group_init_legacy_group(struct drm_device *dev,
				     struct drm_mode_group *group)
{
	struct drm_crtc *crtc;
	struct drm_encoder *encoder;
	struct drm_connector *connector;
	int ret;

	if ((ret = drm_mode_group_init(dev, group)))
		return ret;

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		group->id_list[group->num_crtcs++] = crtc->base.id;

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
		group->id_list[group->num_crtcs + group->num_encoders++] =
		encoder->base.id;

	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
		group->id_list[group->num_crtcs + group->num_encoders +
			       group->num_connectors++] = connector->base.id;

	return 0;
}

/**
 * drm_mode_config_cleanup - free up DRM mode_config info
 * @dev: DRM device
 *
 * LOCKING:
 * Caller must hold mode config lock.
 *
 * Free up all the connectors and CRTCs associated with this DRM device, then
 * free up the framebuffers and associated buffer objects.
 *
 * FIXME: cleanup any dangling user buffer objects too
 */
void drm_mode_config_cleanup(struct drm_device *dev)
{
	struct drm_connector *connector, *ot;
	struct drm_crtc *crtc, *ct;
	struct drm_encoder *encoder, *enct;
	struct drm_framebuffer *fb, *fbt;
	struct drm_property *property, *pt;

	list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
				 head) {
		encoder->funcs->destroy(encoder);
	}

	list_for_each_entry_safe(connector, ot,
				 &dev->mode_config.connector_list, head) {
		connector->funcs->destroy(connector);
	}

	list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
				 head) {
		drm_property_destroy(dev, property);
	}

	list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
		fb->funcs->destroy(fb);
	}

	list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
		crtc->funcs->destroy(crtc);
	}

}
EXPORT_SYMBOL(drm_mode_config_cleanup);

/**
 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
 * @out: drm_mode_modeinfo struct to return to the user
 * @in: drm_display_mode to use
 *
 * LOCKING:
 * None.
 *
 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
 * the user.
 */
void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
			       struct drm_display_mode *in)
{
	out->clock = in->clock;
	out->hdisplay = in->hdisplay;
	out->hsync_start = in->hsync_start;
	out->hsync_end = in->hsync_end;
	out->htotal = in->htotal;
	out->hskew = in->hskew;
	out->vdisplay = in->vdisplay;
	out->vsync_start = in->vsync_start;
	out->vsync_end = in->vsync_end;
	out->vtotal = in->vtotal;
	out->vscan = in->vscan;
For faster browsing, not all history is shown. View entire blame