summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/omapdrm/omap_plane.c
blob: 512af976b7e901739f69d94341d3d33c59e458bf (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
// 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 "omap_dmm_tiler.h"
#include "omap_drv.h"

/*
 * plane funcs
 */

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

struct omap_plane {
	struct drm_plane base;
	enum omap_plane_id id;
	const char *name;
};

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 omap_plane *omap_plane = to_omap_plane(plane);
	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
									   plane);
	struct omap_overlay_info info;
	int ret;

	DBG("%s, crtc=%p fb=%p", omap_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;

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

	DBG("%dx%d -> %dx%d (%d)", 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);

	/* and finally, update omapdss: */
	ret = dispc_ovl_setup(priv->dispc, omap_plane->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",
			omap_plane->name);
		dispc_ovl_enable(priv->dispc, omap_plane->id, false);
		return;
	}

	dispc_ovl_enable(priv->dispc, omap_plane->id, true);
}

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

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

	dispc_ovl_enable(priv->dispc, omap_plane->id, false);
}

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_crtc_state *crtc_state;

	if (!new_plane_state->fb)
		return 0;

	/* crtc should only be NULL when disabling (i.e., !new_plane_state->fb) */
	if (WARN_ON(!new_plane_state->crtc))
		return 0;

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

	if (!crtc_state->enable)
		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;

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

	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", omap_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 *omap_plane = to_omap_plane(plane);

	drm_atomic_helper_plane_reset(plane);
	if (!plane->state)
		return;

	/*
	 * Set the zpos default depending on whether we are a primary or overlay
	 * plane.
	 */
	plane->state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY
			   ? 0 : omap_plane->id;
	plane->state->color_encoding = DRM_COLOR_YCBCR_BT601;
	plane->state->color_range = DRM_COLOR_YCBCR_FULL_RANGE;
}

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 = drm_atomic_helper_plane_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,
};

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;
}

static const char *plane_id_to_name[] = {
	[OMAP_DSS_GFX] = "gfx",
	[OMAP_DSS_VIDEO1] = "vid1",
	[OMAP_DSS_VIDEO2] = "vid2",
	[OMAP_DSS_VIDEO3] = "vid3",
};

static const enum omap_plane_id plane_idx_to_id[] = {
	OMAP_DSS_GFX,
	OMAP_DSS_VIDEO1,
	OMAP_DSS_VIDEO2,
	OMAP_DSS_VIDEO3,
};

/* 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;
	enum omap_plane_id id;
	int ret;
	u32 nformats;
	const u32 *formats;

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

	id = plane_idx_to_id[idx];

	DBG("%s: type=%d", plane_id_to_name[id], type);

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

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

	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);
	drm_plane_create_zpos_property(plane, 0, 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: %s\n",
		__func__, plane_id_to_name[id]);

	kfree(omap_plane);
	return NULL;
}