aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
blob: 46fac545dc2bb8f84e8d6bc241d88931d926b23e (plain) (blame)
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
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
/*
 * Copyright (c) 2014 The Linux Foundation. All rights reserved.
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "mdp5_kms.h"

#include <linux/sort.h>
#include <drm/drm_mode.h>
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
#include "drm_flip_work.h"

#define CURSOR_WIDTH	64
#define CURSOR_HEIGHT	64

#define SSPP_MAX	(SSPP_RGB3 + 1) /* TODO: Add SSPP_MAX in mdp5.xml.h */

struct mdp5_crtc {
	struct drm_crtc base;
	char name[8];
	int id;
	bool enabled;

	/* layer mixer used for this CRTC (+ its lock): */
#define GET_LM_ID(crtc_id)	((crtc_id == 3) ? 5 : crtc_id)
	int lm;
	spinlock_t lm_lock;	/* protect REG_MDP5_LM_* registers */

	/* CTL used for this CRTC: */
	struct mdp5_ctl *ctl;

	/* if there is a pending flip, these will be non-null: */
	struct drm_pending_vblank_event *event;

#define PENDING_CURSOR 0x1
#define PENDING_FLIP   0x2
	atomic_t pending;

	/* for unref'ing cursor bo's after scanout completes: */
	struct drm_flip_work unref_cursor_work;

	struct mdp_irq vblank;
	struct mdp_irq err;

	struct {
		/* protect REG_MDP5_LM_CURSOR* registers and cursor scanout_bo*/
		spinlock_t lock;

		/* current cursor being scanned out: */
		struct drm_gem_object *scanout_bo;
		uint32_t width;
		uint32_t height;
	} cursor;
};
#define to_mdp5_crtc(x) container_of(x, struct mdp5_crtc, base)

static struct mdp5_kms *get_kms(struct drm_crtc *crtc)
{
	struct msm_drm_private *priv = crtc->dev->dev_private;
	return to_mdp5_kms(to_mdp_kms(priv->kms));
}

static void request_pending(struct drm_crtc *crtc, uint32_t pending)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);

	atomic_or(pending, &mdp5_crtc->pending);
	mdp_irq_register(&get_kms(crtc)->base, &mdp5_crtc->vblank);
}

#define mdp5_lm_get_flush(lm)	mdp_ctl_flush_mask_lm(lm)

static void crtc_flush(struct drm_crtc *crtc, u32 flush_mask)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);

	DBG("%s: flush=%08x", mdp5_crtc->name, flush_mask);
	mdp5_ctl_commit(mdp5_crtc->ctl, flush_mask);
}

/*
 * flush updates, to make sure hw is updated to new scanout fb,
 * so that we can safely queue unref to current fb (ie. next
 * vblank we know hw is done w/ previous scanout_fb).
 */
static void crtc_flush_all(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct drm_plane *plane;
	uint32_t flush_mask = 0;

	/* we could have already released CTL in the disable path: */
	if (!mdp5_crtc->ctl)
		return;

	drm_atomic_crtc_for_each_plane(plane, crtc) {
		flush_mask |= mdp5_plane_get_flush(plane);
	}
	flush_mask |= mdp5_ctl_get_flush(mdp5_crtc->ctl);
	flush_mask |= mdp5_lm_get_flush(mdp5_crtc->lm);

	crtc_flush(crtc, flush_mask);
}

/* if file!=NULL, this is preclose potential cancel-flip path */
static void complete_flip(struct drm_crtc *crtc, struct drm_file *file)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct drm_device *dev = crtc->dev;
	struct drm_pending_vblank_event *event;
	struct drm_plane *plane;
	unsigned long flags;

	spin_lock_irqsave(&dev->event_lock, flags);
	event = mdp5_crtc->event;
	if (event) {
		/* if regular vblank case (!file) or if cancel-flip from
		 * preclose on file that requested flip, then send the
		 * event:
		 */
		if (!file || (event->base.file_priv == file)) {
			mdp5_crtc->event = NULL;
			DBG("%s: send event: %p", mdp5_crtc->name, event);
			drm_send_vblank_event(dev, mdp5_crtc->id, event);
		}
	}
	spin_unlock_irqrestore(&dev->event_lock, flags);

	drm_atomic_crtc_for_each_plane(plane, crtc) {
		mdp5_plane_complete_flip(plane);
	}
}

static void unref_cursor_worker(struct drm_flip_work *work, void *val)
{
	struct mdp5_crtc *mdp5_crtc =
		container_of(work, struct mdp5_crtc, unref_cursor_work);
	struct mdp5_kms *mdp5_kms = get_kms(&mdp5_crtc->base);

	msm_gem_put_iova(val, mdp5_kms->id);
	drm_gem_object_unreference_unlocked(val);
}

static void mdp5_crtc_destroy(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);

	drm_crtc_cleanup(crtc);
	drm_flip_work_cleanup(&mdp5_crtc->unref_cursor_work);

	kfree(mdp5_crtc);
}

static bool mdp5_crtc_mode_fixup(struct drm_crtc *crtc,
		const struct drm_display_mode *mode,
		struct drm_display_mode *adjusted_mode)
{
	return true;
}

/*
 * blend_setup() - blend all the planes of a CRTC
 *
 * When border is enabled, the border color will ALWAYS be the base layer.
 * Therefore, the first plane (private RGB pipe) will start at STAGE0.
 * If disabled, the first plane starts at STAGE_BASE.
 *
 * Note:
 * Border is not enabled here because the private plane is exactly
 * the CRTC resolution.
 */
static void blend_setup(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct mdp5_kms *mdp5_kms = get_kms(crtc);
	struct drm_plane *plane;
	const struct mdp5_cfg_hw *hw_cfg;
	uint32_t lm = mdp5_crtc->lm, blend_cfg = 0;
	unsigned long flags;
#define blender(stage)	((stage) - STAGE_BASE)

	hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg);

	spin_lock_irqsave(&mdp5_crtc->lm_lock, flags);

	/* ctl could be released already when we are shutting down: */
	if (!mdp5_crtc->ctl)
		goto out;

	drm_atomic_crtc_for_each_plane(plane, crtc) {
		enum mdp_mixer_stage_id stage =
			to_mdp5_plane_state(plane->state)->stage;

		/*
		 * Note: This cannot happen with current implementation but
		 * we need to check this condition once z property is added
		 */
		BUG_ON(stage > hw_cfg->lm.nb_stages);

		/* LM */
		mdp5_write(mdp5_kms,
				REG_MDP5_LM_BLEND_OP_MODE(lm, blender(stage)),
				MDP5_LM_BLEND_OP_MODE_FG_ALPHA(FG_CONST) |
				MDP5_LM_BLEND_OP_MODE_BG_ALPHA(BG_CONST));
		mdp5_write(mdp5_kms, REG_MDP5_LM_BLEND_FG_ALPHA(lm,
				blender(stage)), 0xff);
		mdp5_write(mdp5_kms, REG_MDP5_LM_BLEND_BG_ALPHA(lm,
				blender(stage)), 0x00);
		/* CTL */
		blend_cfg |= mdp_ctl_blend_mask(mdp5_plane_pipe(plane), stage);
		DBG("%s: blending pipe %s on stage=%d", mdp5_crtc->name,
				pipe2name(mdp5_plane_pipe(plane)), stage);
	}

	DBG("%s: lm%d: blend config = 0x%08x", mdp5_crtc->name, lm, blend_cfg);
	mdp5_ctl_blend(mdp5_crtc->ctl, lm, blend_cfg);

out:
	spin_unlock_irqrestore(&mdp5_crtc->lm_lock, flags);
}

static void mdp5_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct mdp5_kms *mdp5_kms = get_kms(crtc);
	unsigned long flags;
	struct drm_display_mode *mode;

	if (WARN_ON(!crtc->state))
		return;

	mode = &crtc->state->adjusted_mode;

	DBG("%s: set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
			mdp5_crtc->name, mode->base.id, mode->name,
			mode->vrefresh, mode->clock,
			mode->hdisplay, mode->hsync_start,
			mode->hsync_end, mode->htotal,
			mode->vdisplay, mode->vsync_start,
			mode->vsync_end, mode->vtotal,
			mode->type, mode->flags);

	spin_lock_irqsave(&mdp5_crtc->lm_lock, flags);
	mdp5_write(mdp5_kms, REG_MDP5_LM_OUT_SIZE(mdp5_crtc->lm),
			MDP5_LM_OUT_SIZE_WIDTH(mode->hdisplay) |
			MDP5_LM_OUT_SIZE_HEIGHT(mode->vdisplay));
	spin_unlock_irqrestore(&mdp5_crtc->lm_lock, flags);
}

static void mdp5_crtc_disable(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct mdp5_kms *mdp5_kms = get_kms(crtc);

	DBG("%s", mdp5_crtc->name);

	if (WARN_ON(!mdp5_crtc->enabled))
		return;

	/* set STAGE_UNUSED for all layers */
	mdp5_ctl_blend(mdp5_crtc->ctl, mdp5_crtc->lm, 0x00000000);

	mdp_irq_unregister(&mdp5_kms->base, &mdp5_crtc->err);
	mdp5_disable(mdp5_kms);

	mdp5_crtc->enabled = false;
}

static void mdp5_crtc_enable(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct mdp5_kms *mdp5_kms = get_kms(crtc);

	DBG("%s", mdp5_crtc->name);

	if (WARN_ON(mdp5_crtc->enabled))
		return;

	mdp5_enable(mdp5_kms);
	mdp_irq_register(&mdp5_kms->base, &mdp5_crtc->err);

	crtc_flush_all(crtc);

	mdp5_crtc->enabled = true;
}

struct plane_state {
	struct drm_plane *plane;
	struct mdp5_plane_state *state;
};

static int pstate_cmp(const void *a, const void *b)
{
	struct plane_state *pa = (struct plane_state *)a;
	struct plane_state *pb = (struct plane_state *)b;
	return pa->state->zpos - pb->state->zpos;
}

static int mdp5_crtc_atomic_check(struct drm_crtc *crtc,
		struct drm_crtc_state *state)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct mdp5_kms *mdp5_kms = get_kms(crtc);
	struct drm_plane *plane;
	struct drm_device *dev = crtc->dev;
	struct plane_state pstates[STAGE3 + 1];
	int cnt = 0, i;

	DBG("%s: check", mdp5_crtc->name);

	/* request a free CTL, if none is already allocated for this CRTC */
	if (state->enable && !mdp5_crtc->ctl) {
		mdp5_crtc->ctl = mdp5_ctlm_request(mdp5_kms->ctlm, crtc);
		if (WARN_ON(!mdp5_crtc->ctl))
			return -EINVAL;
	}

	/* verify that there are not too many planes attached to crtc
	 * and that we don't have conflicting mixer stages:
	 */
	drm_atomic_crtc_state_for_each_plane(plane, state) {
		struct drm_plane_state *pstate;

		if (cnt >= ARRAY_SIZE(pstates)) {
			dev_err(dev->dev, "too many planes!\n");
			return -EINVAL;
		}

		pstate = state->state->plane_states[drm_plane_index(plane)];

		/* plane might not have changed, in which case take
		 * current state:
		 */
		if (!pstate)
			pstate = plane->state;

		pstates[cnt].plane = plane;
		pstates[cnt].state = to_mdp5_plane_state(pstate);

		cnt++;
	}

	sort(pstates, cnt, sizeof(pstates[0]), pstate_cmp, NULL);

	for (i = 0; i < cnt; i++) {
		pstates[i].state->stage = STAGE_BASE + i;
		DBG("%s: assign pipe %s on stage=%d", mdp5_crtc->name,
				pipe2name(mdp5_plane_pipe(pstates[i].plane)),
				pstates[i].state->stage);
	}

	return 0;
}

static void mdp5_crtc_atomic_begin(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	DBG("%s: begin", mdp5_crtc->name);
}

static void mdp5_crtc_atomic_flush(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct drm_device *dev = crtc->dev;
	unsigned long flags;

	DBG("%s: event: %p", mdp5_crtc->name, crtc->state->event);

	WARN_ON(mdp5_crtc->event);

	spin_lock_irqsave(&dev->event_lock, flags);
	mdp5_crtc->event = crtc->state->event;
	spin_unlock_irqrestore(&dev->event_lock, flags);

	blend_setup(crtc);
	crtc_flush_all(crtc);
	request_pending(crtc, PENDING_FLIP);

	if (mdp5_crtc->ctl && !crtc->state->enable) {
		mdp5_ctl_release(mdp5_crtc->ctl);
		mdp5_crtc->ctl = NULL;
	}
}

static int mdp5_crtc_set_property(struct drm_crtc *crtc,
		struct drm_property *property, uint64_t val)
{
	// XXX
	return -EINVAL;
}

static int mdp5_crtc_cursor_set(struct drm_crtc *crtc,
		struct drm_file *file, uint32_t handle,
		uint32_t width, uint32_t height)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct drm_device *dev = crtc->dev;
	struct mdp5_kms *mdp5_kms = get_kms(crtc);
	struct drm_gem_object *cursor_bo, *old_bo;
	uint32_t blendcfg, cursor_addr, stride;
	int ret, bpp, lm;
	unsigned int depth;
	enum mdp5_cursor_alpha cur_alpha = CURSOR_ALPHA_PER_PIXEL;
	uint32_t flush_mask = mdp_ctl_flush_mask_cursor(0);
	unsigned long flags;

	if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {
		dev_err(dev->dev, "bad cursor size: %dx%d\n", width, height);
		return -EINVAL;
	}

	if (NULL == mdp5_crtc->ctl)
		return -EINVAL;

	if (!handle) {
		DBG("Cursor off");
		return mdp5_ctl_set_cursor(mdp5_crtc->ctl, false);
	}

	cursor_bo = drm_gem_object_lookup(dev, file, handle);
	if (!cursor_bo)
		return -ENOENT;

	ret = msm_gem_get_iova(cursor_bo, mdp5_kms->id, &cursor_addr);
	if (ret)
		return -EINVAL;

	lm = mdp5_crtc->lm;
	drm_fb_get_bpp_depth(DRM_FORMAT_ARGB8888, &depth, &bpp);
	stride = width * (bpp >> 3);

	spin_lock_irqsave(&mdp5_crtc->cursor.lock, flags);
	old_bo = mdp5_crtc->cursor.scanout_bo;

	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_STRIDE(lm), stride);
	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_FORMAT(lm),
			MDP5_LM_CURSOR_FORMAT_FORMAT(CURSOR_FMT_ARGB8888));
	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_IMG_SIZE(lm),
			MDP5_LM_CURSOR_IMG_SIZE_SRC_H(height) |
			MDP5_LM_CURSOR_IMG_SIZE_SRC_W(width));
	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_SIZE(lm),
			MDP5_LM_CURSOR_SIZE_ROI_H(height) |
			MDP5_LM_CURSOR_SIZE_ROI_W(width));
	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_BASE_ADDR(lm), cursor_addr);


	blendcfg = MDP5_LM_CURSOR_BLEND_CONFIG_BLEND_EN;
	blendcfg |= MDP5_LM_CURSOR_BLEND_CONFIG_BLEND_TRANSP_EN;
	blendcfg |= MDP5_LM_CURSOR_BLEND_CONFIG_BLEND_ALPHA_SEL(cur_alpha);
	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_BLEND_CONFIG(lm), blendcfg);

	mdp5_crtc->cursor.scanout_bo = cursor_bo;
	mdp5_crtc->cursor.width = width;
	mdp5_crtc->cursor.height = height;
	spin_unlock_irqrestore(&mdp5_crtc->cursor.lock, flags);

	ret = mdp5_ctl_set_cursor(mdp5_crtc->ctl, true);
	if (ret)
		goto end;

	flush_mask |= mdp5_ctl_get_flush(mdp5_crtc->ctl);
	crtc_flush(crtc, flush_mask);

end:
	if (old_bo) {
		drm_flip_work_queue(&mdp5_crtc->unref_cursor_work, old_bo);
		/* enable vblank to complete cursor work: */
		request_pending(crtc, PENDING_CURSOR);
	}
	return ret;
}

static int mdp5_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
{
	struct mdp5_kms *mdp5_kms = get_kms(crtc);
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	uint32_t flush_mask = mdp_ctl_flush_mask_cursor(0);
	uint32_t xres = crtc->mode.hdisplay;
	uint32_t yres = crtc->mode.vdisplay;
	uint32_t roi_w;
	uint32_t roi_h;
	unsigned long flags;

	x = (x > 0) ? x : 0;
	y = (y > 0) ? y : 0;

	/*
	 * Cursor Region Of Interest (ROI) is a plane read from cursor
	 * buffer to render. The ROI region is determined by the visiblity of
	 * the cursor point. In the default Cursor image the cursor point will
	 * be at the top left of the cursor image, unless it is specified
	 * otherwise using hotspot feature.
	 *
	 * If the cursor point reaches the right (xres - x < cursor.width) or
	 * bottom (yres - y < cursor.height) boundary of the screen, then ROI
	 * width and ROI height need to be evaluated to crop the cursor image
	 * accordingly.
	 * (xres-x) will be new cursor width when x > (xres - cursor.width)
	 * (yres-y) will be new cursor height when y > (yres - cursor.height)
	 */
	roi_w = min(mdp5_crtc->cursor.width, xres - x);
	roi_h = min(mdp5_crtc->cursor.height, yres - y);

	spin_lock_irqsave(&mdp5_crtc->cursor.lock, flags);
	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_SIZE(mdp5_crtc->lm),
			MDP5_LM_CURSOR_SIZE_ROI_H(roi_h) |
			MDP5_LM_CURSOR_SIZE_ROI_W(roi_w));
	mdp5_write(mdp5_kms, REG_MDP5_LM_CURSOR_START_XY(mdp5_crtc->lm),
			MDP5_LM_CURSOR_START_XY_Y_START(y) |
			MDP5_LM_CURSOR_START_XY_X_START(x));
	spin_unlock_irqrestore(&mdp5_crtc->cursor.lock, flags);

	crtc_flush(crtc, flush_mask);

	return 0;
}

static const struct drm_crtc_funcs mdp5_crtc_funcs = {
	.set_config = drm_atomic_helper_set_config,
	.destroy = mdp5_crtc_destroy,
	.page_flip = drm_atomic_helper_page_flip,
	.set_property = mdp5_crtc_set_property,
	.reset = drm_atomic_helper_crtc_reset,
	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
	.cursor_set = mdp5_crtc_cursor_set,
	.cursor_move = mdp5_crtc_cursor_move,
};

static const struct drm_crtc_helper_funcs mdp5_crtc_helper_funcs = {
	.mode_fixup = mdp5_crtc_mode_fixup,
	.mode_set_nofb = mdp5_crtc_mode_set_nofb,
	.prepare = mdp5_crtc_disable,
	.commit = mdp5_crtc_enable,
	.atomic_check = mdp5_crtc_atomic_check,
	.atomic_begin = mdp5_crtc_atomic_begin,
	.atomic_flush = mdp5_crtc_atomic_flush,
};

static void mdp5_crtc_vblank_irq(struct mdp_irq *irq, uint32_t irqstatus)
{
	struct mdp5_crtc *mdp5_crtc = container_of(irq, struct mdp5_crtc, vblank);
	struct drm_crtc *crtc = &mdp5_crtc->base;
	struct msm_drm_private *priv = crtc->dev->dev_private;
	unsigned pending;

	mdp_irq_unregister(&get_kms(crtc)->base, &mdp5_crtc->vblank);

	pending = atomic_xchg(&mdp5_crtc->pending, 0);

	if (pending & PENDING_FLIP) {
		complete_flip(crtc, NULL);
	}

	if (pending & PENDING_CURSOR)
		drm_flip_work_commit(&mdp5_crtc->unref_cursor_work, priv->wq);
}

static void mdp5_crtc_err_irq(struct mdp_irq *irq, uint32_t irqstatus)
{
	struct mdp5_crtc *mdp5_crtc = container_of(irq, struct mdp5_crtc, err);

	DBG("%s: error: %08x", mdp5_crtc->name, irqstatus);
}

uint32_t mdp5_crtc_vblank(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	return mdp5_crtc->vblank.irqmask;
}

void mdp5_crtc_cancel_pending_flip(struct drm_crtc *crtc, struct drm_file *file)
{
	DBG("cancel: %p", file);
	complete_flip(crtc, file);
}

/* set interface for routing crtc->encoder: */
void mdp5_crtc_set_intf(struct drm_crtc *crtc, int intf,
		enum mdp5_intf intf_id)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
	struct mdp5_kms *mdp5_kms = get_kms(crtc);
	uint32_t flush_mask = 0;
	uint32_t intf_sel;
	unsigned long flags;

	/* now that we know what irq's we want: */
	mdp5_crtc->err.irqmask = intf2err(intf);
	mdp5_crtc->vblank.irqmask = intf2vblank(intf);
	mdp_irq_update(&mdp5_kms->base);

	spin_lock_irqsave(&mdp5_kms->resource_lock, flags);
	intf_sel = mdp5_read(mdp5_kms, REG_MDP5_DISP_INTF_SEL);

	switch (intf) {
	case 0:
		intf_sel &= ~MDP5_DISP_INTF_SEL_INTF0__MASK;
		intf_sel |= MDP5_DISP_INTF_SEL_INTF0(intf_id);
		break;
	case 1:
		intf_sel &= ~MDP5_DISP_INTF_SEL_INTF1__MASK;
		intf_sel |= MDP5_DISP_INTF_SEL_INTF1(intf_id);
		break;
	case 2:
		intf_sel &= ~MDP5_DISP_INTF_SEL_INTF2__MASK;
		intf_sel |= MDP5_DISP_INTF_SEL_INTF2(intf_id);
		break;
	case 3:
		intf_sel &= ~MDP5_DISP_INTF_SEL_INTF3__MASK;
		intf_sel |= MDP5_DISP_INTF_SEL_INTF3(intf_id);
		break;
	default:
		BUG();
		break;
	}

	mdp5_write(mdp5_kms, REG_MDP5_DISP_INTF_SEL, intf_sel);
	spin_unlock_irqrestore(&mdp5_kms->resource_lock, flags);

	DBG("%s: intf_sel=%08x", mdp5_crtc->name, intf_sel);
	mdp5_ctl_set_intf(mdp5_crtc->ctl, intf);
	flush_mask |= mdp5_ctl_get_flush(mdp5_crtc->ctl);
	flush_mask |= mdp5_lm_get_flush(mdp5_crtc->lm);

	crtc_flush(crtc, flush_mask);
}

int mdp5_crtc_get_lm(struct drm_crtc *crtc)
{
	struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);

	if (WARN_ON(!crtc))
		return -EINVAL;

	return mdp5_crtc->lm;
}

/* initialize crtc */
struct drm_crtc *mdp5_crtc_init(struct drm_device *dev,
		struct drm_plane *plane, int id)
{
	struct drm_crtc *crtc = NULL;
	struct mdp5_crtc *mdp5_crtc;

	mdp5_crtc = kzalloc(sizeof(*mdp5_crtc), GFP_KERNEL);
	if (!mdp5_crtc)
		return ERR_PTR(-ENOMEM);

	crtc = &mdp5_crtc->base;

	mdp5_crtc->id = id;
	mdp5_crtc->lm = GET_LM_ID(id);

	spin_lock_init(&mdp5_crtc->lm_lock);
	spin_lock_init(&mdp5_crtc->cursor.lock);

	mdp5_crtc->vblank.irq = mdp5_crtc_vblank_irq;
	mdp5_crtc->err.irq = mdp5_crtc_err_irq;

	snprintf(mdp5_crtc->name, sizeof(mdp5_crtc->name), "%s:%d",
			pipe2name(mdp5_plane_pipe(plane)), id);

	drm_crtc_init_with_planes(dev, crtc, plane, NULL, &mdp5_crtc_funcs);

	drm_flip_work_init(&mdp5_crtc->unref_cursor_work,
			"unref cursor", unref_cursor_worker);

	drm_crtc_helper_add(crtc, &mdp5_crtc_helper_funcs);
	plane->crtc = crtc;

	mdp5_plane_install_properties(plane, &crtc->base);

	return crtc;
}