summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/omapdrm/omap_plane.c
blob: 1294b3328f096fccce829e7f7b495a7a2fe1dd37 (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
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
 * Author: Rob Clark <rob.clark@linaro.org>
 */

#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>

#include "omap_dmm_tiler.h"
#include "omap_drv.h"

/*
 * plane funcs
 */

#define to_omap_plane_state(x) container_of(x, struct omap_plane_state, base)

struct omap_plane_state {
	/* Must be first. */
	struct drm_plane_state base;

	struct omap_hw_overlay *overlay;
	struct omap_hw_overlay *r_overlay;  /* right overlay */
};

#define to_omap_plane(x) container_of(x, struct omap_plane, base)

struct omap_plane {
	struct drm_plane base;
	enum omap_plane_id id;
};

bool is_omap_plane_dual_overlay(struct drm_plane_state *state)
{
	struct omap_plane_state *omap_state = to_omap_plane_state(state);

	return !!omap_state->r_overlay;
}

static int omap_plane_prepare_fb(struct drm_plane *plane,
				 struct drm_plane_state *new_state)
{
	if (!new_state->fb)
		return 0;

	drm_gem_plane_helper_prepare_fb(plane, new_state);

	return omap_framebuffer_pin(new_state->fb);
}

static void omap_plane_cleanup_fb(struct drm_plane *plane,
				  struct drm_plane_state *old_state)
{
	if (old_state->fb)
		omap_framebuffer_unpin(old_state->fb);
}

static void omap_plane_atomic_update(struct drm_plane *plane,
				     struct drm_atomic_state *state)
{
	struct omap_drm_private *priv = plane->dev->dev_private;
	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
									   plane);
	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
									   plane);
	struct omap_plane_state *new_omap_state;
	struct omap_plane_state *old_omap_state;
	struct omap_overlay_info info, r_info;
	enum omap_plane_id ovl_id, r_ovl_id;
	int ret;
	bool dual_ovl;

	new_omap_state = to_omap_plane_state(new_state);
	old_omap_state = to_omap_plane_state(old_state);

	dual_ovl = is_omap_plane_dual_overlay(new_state);

	/* Cleanup previously held overlay if needed */
	if (old_omap_state->overlay)
		omap_overlay_update_state(priv, old_omap_state->overlay);
	if (old_omap_state->r_overlay)
		omap_overlay_update_state(priv, old_omap_state->r_overlay);

	if (!new_omap_state->overlay) {
		DBG("[PLANE:%d:%s] no overlay attached", plane->base.id, plane->name);
		return;
	}

	ovl_id = new_omap_state->overlay->id;
	DBG("%s, crtc=%p fb=%p", plane->name, new_state->crtc,
	    new_state->fb);

	memset(&info, 0, sizeof(info));
	info.rotation_type = OMAP_DSS_ROT_NONE;
	info.rotation = DRM_MODE_ROTATE_0;
	info.global_alpha = new_state->alpha >> 8;
	info.zorder = new_state->normalized_zpos;
	if (new_state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI)
		info.pre_mult_alpha = 1;
	else
		info.pre_mult_alpha = 0;
	info.color_encoding = new_state->color_encoding;
	info.color_range = new_state->color_range;

	r_info = info;

	/* update scanout: */
	omap_framebuffer_update_scanout(new_state->fb, new_state, &info,
					dual_ovl ? &r_info : NULL);

	DBG("%s: %dx%d -> %dx%d (%d)",
			new_omap_state->overlay->name, info.width, info.height,
			info.out_width, info.out_height, info.screen_width);
	DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
			&info.paddr, &info.p_uv_addr);

	if (dual_ovl) {
		r_ovl_id = new_omap_state->r_overlay->id;
		/*
		 * If the current plane uses 2 hw planes the very next
		 * zorder is used by the r_overlay so we just use the
		 * main overlay zorder + 1
		 */
		r_info.zorder = info.zorder + 1;

		DBG("%s: %dx%d -> %dx%d (%d)",
		    new_omap_state->r_overlay->name,
		    r_info.width, r_info.height,
		    r_info.out_width, r_info.out_height, r_info.screen_width);
		DBG("%d,%d %pad %pad", r_info.pos_x, r_info.pos_y,
		    &r_info.paddr, &r_info.p_uv_addr);
	}

	/* and finally, update omapdss: */
	ret = dispc_ovl_setup(priv->dispc, ovl_id, &info,
			      omap_crtc_timings(new_state->crtc), false,
			      omap_crtc_channel(new_state->crtc));
	if (ret) {
		dev_err(plane->dev->dev, "Failed to setup plane %s\n",
			plane->name);
		dispc_ovl_enable(priv->dispc, ovl_id, false);
		return;
	}

	dispc_ovl_enable(priv->dispc, ovl_id, true);

	if (dual_ovl) {
		ret = dispc_ovl_setup(priv->dispc, r_ovl_id, &r_info,
				      omap_crtc_timings(new_state->crtc), false,
				      omap_crtc_channel(new_state->crtc));
		if (ret) {
			dev_err(plane->dev->dev, "Failed to setup plane right-overlay %s\n",
				plane->name);
			dispc_ovl_enable(priv->dispc, r_ovl_id, false);
			dispc_ovl_enable(priv->dispc, ovl_id, false);
			return;
		}

		dispc_ovl_enable(priv->dispc, r_ovl_id, true);
	}
}

static void omap_plane_atomic_disable(struct drm_plane *plane,
				      struct drm_atomic_state *state)
{
	struct omap_drm_private *priv = plane->dev->dev_private;
	struct omap_plane *omap_plane = to_omap_plane(plane);
	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
									   plane);
	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
									   plane);
	struct omap_plane_state *new_omap_state;
	struct omap_plane_state *old_omap_state;

	new_omap_state = to_omap_plane_state(new_state);
	old_omap_state = to_omap_plane_state(old_state);

	if (!old_omap_state->overlay)
		return;

	new_state->rotation = DRM_MODE_ROTATE_0;
	new_state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : omap_plane->id;

	omap_overlay_update_state(priv, old_omap_state->overlay);
	new_omap_state->overlay = NULL;

	if (is_omap_plane_dual_overlay(old_state)) {
		omap_overlay_update_state(priv, old_omap_state->r_overlay);
		new_omap_state->r_overlay = NULL;
	}
}

#define FRAC_16_16(mult, div)    (((mult) << 16) / (div))

static int omap_plane_atomic_check(struct drm_plane *plane,
				   struct drm_atomic_state *state)
{
	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
										 plane);
	struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state,
										 plane);
	struct omap_drm_private *priv = plane->dev->dev_private;
	struct omap_plane_state *omap_state = to_omap_plane_state(new_plane_state);
	struct omap_global_state *omap_overlay_global_state;
	struct drm_crtc_state *crtc_state;
	bool new_r_hw_overlay = false;
	bool new_hw_overlay = false;
	u32 max_width, max_height;
	struct drm_crtc *crtc;
	u16 width, height;
	u32 caps = 0;
	u32 fourcc;
	int ret;

	omap_overlay_global_state = omap_get_global_state(state);
	if (IS_ERR(omap_overlay_global_state))
		return PTR_ERR(omap_overlay_global_state);

	dispc_ovl_get_max_size(priv->dispc, &width, &height);
	max_width = width << 16;
	max_height = height << 16;

	crtc = new_plane_state->crtc ? new_plane_state->crtc : plane->state->crtc;
	if (!crtc)
		return 0;

	crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
	/* we should have a crtc state if the plane is attached to a crtc */
	if (WARN_ON(!crtc_state))
		return 0;

	/*
	 * Note: these are just sanity checks to filter out totally bad scaling
	 * factors. The real limits must be calculated case by case, and
	 * unfortunately we currently do those checks only at the commit
	 * phase in dispc.
	 */
	ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
						  FRAC_16_16(1, 8), FRAC_16_16(8, 1),
						  true, true);
	if (ret)
		return ret;

	DBG("%s: visible %d -> %d", plane->name,
	    old_plane_state->visible, new_plane_state->visible);

	if (!new_plane_state->visible) {
		omap_overlay_release(state, omap_state->overlay);
		omap_overlay_release(state, omap_state->r_overlay);
		omap_state->overlay = NULL;
		omap_state->r_overlay = NULL;
		return 0;
	}

	if (new_plane_state->crtc_x < 0 || new_plane_state->crtc_y < 0)
		return -EINVAL;

	if (new_plane_state->crtc_x + new_plane_state->crtc_w > crtc_state->adjusted_mode.hdisplay)
		return -EINVAL;

	if (new_plane_state->crtc_y + new_plane_state->crtc_h > crtc_state->adjusted_mode.vdisplay)
		return -EINVAL;

	/* Make sure dimensions are within bounds. */
	if (new_plane_state->src_h > max_height || new_plane_state->crtc_h > height)
		return -EINVAL;


	if (new_plane_state->src_w > max_width || new_plane_state->crtc_w > width) {
		bool is_fourcc_yuv = new_plane_state->fb->format->is_yuv;

		if (is_fourcc_yuv && (((new_plane_state->src_w >> 16) / 2 & 1) ||
				      new_plane_state->crtc_w / 2 & 1)) {
			/*
			 * When calculating the split overlay width
			 * and it yield an odd value we will need to adjust
			 * the indivual width +/- 1. So make sure it fits
			 */
			if (new_plane_state->src_w <= ((2 * width - 1) << 16) &&
			    new_plane_state->crtc_w <= (2 * width - 1))
				new_r_hw_overlay = true;
			else
				return -EINVAL;
		} else {
			if (new_plane_state->src_w <= (2 * max_width) &&
			    new_plane_state->crtc_w <= (2 * width))
				new_r_hw_overlay = true;
			else
				return -EINVAL;
		}
	}

	if (new_plane_state->rotation != DRM_MODE_ROTATE_0 &&
	    !omap_framebuffer_supports_rotation(new_plane_state->fb))
		return -EINVAL;

	if ((new_plane_state->src_w >> 16) != new_plane_state->crtc_w ||
	    (new_plane_state->src_h >> 16) != new_plane_state->crtc_h)
		caps |= OMAP_DSS_OVL_CAP_SCALE;

	fourcc = new_plane_state->fb->format->format;

	/*
	 * (re)allocate hw overlay if we don't have one or
	 * there is a caps mismatch
	 */
	if (!omap_state->overlay || (caps & ~omap_state->overlay->caps)) {
		new_hw_overlay = true;
	} else {
		/* check supported format */
		if (!dispc_ovl_color_mode_supported(priv->dispc, omap_state->overlay->id,
						    fourcc))
			new_hw_overlay = true;
	}

	/*
	 * check if we need two overlays and only have 1 or
	 * if we had 2 overlays but will only need 1
	 */
	if ((new_r_hw_overlay && !omap_state->r_overlay) ||
	    (!new_r_hw_overlay && omap_state->r_overlay))
		new_hw_overlay = true;

	if (new_hw_overlay) {
		struct omap_hw_overlay *old_ovl = omap_state->overlay;
		struct omap_hw_overlay *old_r_ovl = omap_state->r_overlay;
		struct omap_hw_overlay *new_ovl = NULL;
		struct omap_hw_overlay *new_r_ovl = NULL;

		omap_overlay_release(state, old_ovl);
		omap_overlay_release(state, old_r_ovl);

		ret = omap_overlay_assign(state, plane, caps, fourcc, &new_ovl,
					  new_r_hw_overlay ? &new_r_ovl : NULL);
		if (ret) {
			DBG("%s: failed to assign hw_overlay", plane->name);
			omap_state->overlay = NULL;
			omap_state->r_overlay = NULL;
			return ret;
		}

		omap_state->overlay = new_ovl;
		if (new_r_hw_overlay)
			omap_state->r_overlay = new_r_ovl;
		else
			omap_state->r_overlay = NULL;
	}

	DBG("plane: %s overlay_id: %d", plane->name, omap_state->overlay->id);

	if (omap_state->r_overlay)
		DBG("plane: %s r_overlay_id: %d", plane->name, omap_state->r_overlay->id);

	return 0;
}

static const struct drm_plane_helper_funcs omap_plane_helper_funcs = {
	.prepare_fb = omap_plane_prepare_fb,
	.cleanup_fb = omap_plane_cleanup_fb,
	.atomic_check = omap_plane_atomic_check,
	.atomic_update = omap_plane_atomic_update,
	.atomic_disable = omap_plane_atomic_disable,
};

static void omap_plane_destroy(struct drm_plane *plane)
{
	struct omap_plane *omap_plane = to_omap_plane(plane);

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

	drm_plane_cleanup(plane);

	kfree(omap_plane);
}

/* helper to install properties which are common to planes and crtcs */
void omap_plane_install_properties(struct drm_plane *plane,
		struct drm_mode_object *obj)
{
	struct drm_device *dev = plane->dev;
	struct omap_drm_private *priv = dev->dev_private;

	if (priv->has_dmm) {
		if (!plane->rotation_property)
			drm_plane_create_rotation_property(plane,
							   DRM_MODE_ROTATE_0,
							   DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_90 |
							   DRM_MODE_ROTATE_180 | DRM_MODE_ROTATE_270 |
							   DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y);

		/* Attach the rotation property also to the crtc object */
		if (plane->rotation_property && obj != &plane->base)
			drm_object_attach_property(obj, plane->rotation_property,
						   DRM_MODE_ROTATE_0);
	}

	drm_object_attach_property(obj, priv->zorder_prop, 0);
}

static void omap_plane_reset(struct drm_plane *plane)
{
	struct omap_plane_state *omap_state;

	if (plane->state)
		drm_atomic_helper_plane_destroy_state(plane, plane->state);

	omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL);
	if (!omap_state)
		return;

	__drm_atomic_helper_plane_reset(plane, &omap_state->base);
}

static struct drm_plane_state *
omap_plane_atomic_duplicate_state(struct drm_plane *plane)
{
	struct omap_plane_state *state, *current_state;

	if (WARN_ON(!plane->state))
		return NULL;

	current_state = to_omap_plane_state(plane->state);

	state = kmalloc(sizeof(*state), GFP_KERNEL);
	if (!state)
		return NULL;

	__drm_atomic_helper_plane_duplicate_state(plane, &state->base);

	state->overlay = current_state->overlay;
	state->r_overlay = current_state->r_overlay;

	return &state->base;
}

static void omap_plane_atomic_print_state(struct drm_printer *p,
					  const struct drm_plane_state *state)
{
	struct omap_plane_state *omap_state = to_omap_plane_state(state);

	if (omap_state->overlay)
		drm_printf(p, "\toverlay=%s (caps=0x%x)\n",
			   omap_state->overlay->name,
			   omap_state->overlay->caps);
	else
		drm_printf(p, "\toverlay=None\n");
	if (omap_state->r_overlay)
		drm_printf(p, "\tr_overlay=%s (caps=0x%x)\n",
			   omap_state->r_overlay->name,
			   omap_state->r_overlay->caps);
	else
		drm_printf(p, "\tr_overlay=None\n");
}

static int omap_plane_atomic_set_property(struct drm_plane *plane,
					  struct drm_plane_state *state,
					  struct drm_property *property,
					  u64 val)
{
	struct omap_drm_private *priv = plane->dev->dev_private;

	if (property == priv->zorder_prop)
		state->zpos = val;
	else
		return -EINVAL;

	return 0;
}

static int omap_plane_atomic_get_property(struct drm_plane *plane,
					  const struct drm_plane_state *state,
					  struct drm_property *property,
					  u64 *val)
{
	struct omap_drm_private *priv = plane->dev->dev_private;

	if (property == priv->zorder_prop)
		*val = state->zpos;
	else
		return -EINVAL;

	return 0;
}

static const struct drm_plane_funcs omap_plane_funcs = {
	.update_plane = drm_atomic_helper_update_plane,
	.disable_plane = drm_atomic_helper_disable_plane,
	.reset = omap_plane_reset,
	.destroy = omap_plane_destroy,
	.atomic_duplicate_state = omap_plane_atomic_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
	.atomic_set_property = omap_plane_atomic_set_property,
	.atomic_get_property = omap_plane_atomic_get_property,
	.atomic_print_state = omap_plane_atomic_print_state,
};

static bool omap_plane_supports_yuv(struct drm_plane *plane)
{
	struct omap_drm_private *priv = plane->dev->dev_private;
	struct omap_plane *omap_plane = to_omap_plane(plane);
	const u32 *formats = dispc_ovl_get_color_modes(priv->dispc, omap_plane->id);
	u32 i;

	for (i = 0; formats[i]; i++)
		if (formats[i] == DRM_FORMAT_YUYV ||
		    formats[i] == DRM_FORMAT_UYVY ||
		    formats[i] == DRM_FORMAT_NV12)
			return true;

	return false;
}

/* initialize plane */
struct drm_plane *omap_plane_init(struct drm_device *dev,
		int idx, enum drm_plane_type type,
		u32 possible_crtcs)
{
	struct omap_drm_private *priv = dev->dev_private;
	unsigned int num_planes = dispc_get_num_ovls(priv->dispc);
	struct drm_plane *plane;
	struct omap_plane *omap_plane;
	unsigned int zpos;
	int ret;
	u32 nformats;
	const u32 *formats;

	if (WARN_ON(idx >= num_planes))
		return ERR_PTR(-EINVAL);

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

	omap_plane->id = idx;

	DBG("%d: type=%d", omap_plane->id, type);
	DBG("	crtc_mask: 0x%04x", possible_crtcs);

	formats = dispc_ovl_get_color_modes(priv->dispc, omap_plane->id);
	for (nformats = 0; formats[nformats]; ++nformats)
		;

	plane = &omap_plane->base;

	ret = drm_universal_plane_init(dev, plane, possible_crtcs,
				       &omap_plane_funcs, formats,
				       nformats, NULL, type, NULL);
	if (ret < 0)
		goto error;

	drm_plane_helper_add(plane, &omap_plane_helper_funcs);

	omap_plane_install_properties(plane, &plane->base);

	/*
	 * Set the zpos default depending on whether we are a primary or overlay
	 * plane.
	 */
	if (plane->type == DRM_PLANE_TYPE_PRIMARY)
		zpos = 0;
	else
		zpos = omap_plane->id;
	drm_plane_create_zpos_property(plane, zpos, 0, num_planes - 1);
	drm_plane_create_alpha_property(plane);
	drm_plane_create_blend_mode_property(plane, BIT(DRM_MODE_BLEND_PREMULTI) |
					     BIT(DRM_MODE_BLEND_COVERAGE));

	if (omap_plane_supports_yuv(plane))
		drm_plane_create_color_properties(plane,
						  BIT(DRM_COLOR_YCBCR_BT601) |
						  BIT(DRM_COLOR_YCBCR_BT709),
						  BIT(DRM_COLOR_YCBCR_FULL_RANGE) |
						  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
						  DRM_COLOR_YCBCR_BT601,
						  DRM_COLOR_YCBCR_FULL_RANGE);

	return plane;

error:
	dev_err(dev->dev, "%s(): could not create plane: %d\n",
		__func__, omap_plane->id);

	kfree(omap_plane);
	return NULL;
}