summaryrefslogtreecommitdiffstats
path: root/drivers/media/video/s5p-tv/mixer_vp_layer.c
blob: f3bb2e34cb517d11bdb1dd11d716cb18255f0e4b (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
/*
 * Samsung TV Mixer driver
 *
 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
 *
 * Tomasz Stanislawski, <t.stanislaws@samsung.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundiation. either version 2 of the License,
 * or (at your option) any later version
 */

#include "mixer.h"

#include "regs-vp.h"

#include <media/videobuf2-dma-contig.h>

/* FORMAT DEFINITIONS */
static const struct mxr_format mxr_fmt_nv12 = {
	.name = "NV12",
	.fourcc = V4L2_PIX_FMT_NV12,
	.colorspace = V4L2_COLORSPACE_JPEG,
	.num_planes = 2,
	.plane = {
		{ .width = 1, .height = 1, .size = 1 },
		{ .width = 2, .height = 2, .size = 2 },
	},
	.num_subframes = 1,
	.cookie = VP_MODE_NV12 | VP_MODE_MEM_LINEAR,
};

static const struct mxr_format mxr_fmt_nv21 = {
	.name = "NV21",
	.fourcc = V4L2_PIX_FMT_NV21,
	.colorspace = V4L2_COLORSPACE_JPEG,
	.num_planes = 2,
	.plane = {
		{ .width = 1, .height = 1, .size = 1 },
		{ .width = 2, .height = 2, .size = 2 },
	},
	.num_subframes = 1,
	.cookie = VP_MODE_NV21 | VP_MODE_MEM_LINEAR,
};

static const struct mxr_format mxr_fmt_nv12m = {
	.name = "NV12 (mplane)",
	.fourcc = V4L2_PIX_FMT_NV12M,
	.colorspace = V4L2_COLORSPACE_JPEG,
	.num_planes = 2,
	.plane = {
		{ .width = 1, .height = 1, .size = 1 },
		{ .width = 2, .height = 2, .size = 2 },
	},
	.num_subframes = 2,
	.plane2subframe = {0, 1},
	.cookie = VP_MODE_NV12 | VP_MODE_MEM_LINEAR,
};

static const struct mxr_format mxr_fmt_nv12mt = {
	.name = "NV12 tiled (mplane)",
	.fourcc = V4L2_PIX_FMT_NV12MT,
	.colorspace = V4L2_COLORSPACE_JPEG,
	.num_planes = 2,
	.plane = {
		{ .width = 128, .height = 32, .size = 4096 },
		{ .width = 128, .height = 32, .size = 2048 },
	},
	.num_subframes = 2,
	.plane2subframe = {0, 1},
	.cookie = VP_MODE_NV12 | VP_MODE_MEM_TILED,
};

static const struct mxr_format *mxr_video_format[] = {
	&mxr_fmt_nv12,
	&mxr_fmt_nv21,
	&mxr_fmt_nv12m,
	&mxr_fmt_nv12mt,
};

/* AUXILIARY CALLBACKS */

static void mxr_vp_layer_release(struct mxr_layer *layer)
{
	mxr_base_layer_unregister(layer);
	mxr_base_layer_release(layer);
}

static void mxr_vp_buffer_set(struct mxr_layer *layer,
	struct mxr_buffer *buf)
{
	dma_addr_t luma_addr[2] = {0, 0};
	dma_addr_t chroma_addr[2] = {0, 0};

	if (buf == NULL) {
		mxr_reg_vp_buffer(layer->mdev, luma_addr, chroma_addr);
		return;
	}
	luma_addr[0] = vb2_dma_contig_plane_dma_addr(&buf->vb, 0);
	if (layer->fmt->num_subframes == 2) {
		chroma_addr[0] = vb2_dma_contig_plane_dma_addr(&buf->vb, 1);
	} else {
		/* FIXME: mxr_get_plane_size compute integer division,
		 * which is slow and should not be performed in interrupt */
		chroma_addr[0] = luma_addr[0] + mxr_get_plane_size(
			&layer->fmt->plane[0], layer->geo.src.full_width,
			layer->geo.src.full_height);
	}
	if (layer->fmt->cookie & VP_MODE_MEM_TILED) {
		luma_addr[1] = luma_addr[0] + 0x40;
		chroma_addr[1] = chroma_addr[0] + 0x40;
	} else {
		luma_addr[1] = luma_addr[0] + layer->geo.src.full_width;
		chroma_addr[1] = chroma_addr[0];
	}
	mxr_reg_vp_buffer(layer->mdev, luma_addr, chroma_addr);
}

static void mxr_vp_stream_set(struct mxr_layer *layer, int en)
{
	mxr_reg_vp_layer_stream(layer->mdev, en);
}

static void mxr_vp_format_set(struct mxr_layer *layer)
{
	mxr_reg_vp_format(layer->mdev, layer->fmt, &layer->geo);
}

static void mxr_vp_fix_geometry(struct mxr_layer *layer)
{
	struct mxr_geometry *geo = &layer->geo;

	/* align horizontal size to 8 pixels */
	geo->src.full_width = ALIGN(geo->src.full_width, 8);
	/* limit to boundary size */
	geo->src.full_width = clamp_val(geo->src.full_width, 8, 8192);
	geo->src.full_height = clamp_val(geo->src.full_height, 1, 8192);
	geo->src.width = clamp_val(geo->src.width, 32, geo->src.full_width);
	geo->src.width = min(geo->src.width, 2047U);
	geo->src.height = clamp_val(geo->src.height, 4, geo->src.full_height);
	geo->src.height = min(geo->src.height, 2047U);

	/* setting size of output window */
	geo->dst.width = clamp_val(geo->dst.width, 8, geo->dst.full_width);
	geo->dst.height = clamp_val(geo->dst.height, 1, geo->dst.full_height);

	/* ensure that scaling is in range 1/4x to 16x */
	if (geo->src.width >= 4 * geo->dst.width)
		geo->src.width = 4 * geo->dst.width;
	if (geo->dst.width >= 16 * geo->src.width)
		geo->dst.width = 16 * geo->src.width;
	if (geo->src.height >= 4 * geo->dst.height)
		geo->src.height = 4 * geo->dst.height;
	if (geo->dst.height >= 16 * geo->src.height)
		geo->dst.height = 16 * geo->src.height;

	/* setting scaling ratio */
	geo->x_ratio = (geo->src.width << 16) / geo->dst.width;
	geo->y_ratio = (geo->src.height << 16) / geo->dst.height;

	/* adjust offsets */
	geo->src.x_offset = min(geo->src.x_offset,
		geo->src.full_width - geo->src.width);
	geo->src.y_offset = min(geo->src.y_offset,
		geo->src.full_height - geo->src.height);
	geo->dst.x_offset = min(geo->dst.x_offset,
		geo->dst.full_width - geo->dst.width);
	geo->dst.y_offset = min(geo->dst.y_offset,
		geo->dst.full_height - geo->dst.height);
}

/* PUBLIC API */

struct mxr_layer *mxr_vp_layer_create(struct mxr_device *mdev, int idx)
{
	struct mxr_layer *layer;
	int ret;
	struct mxr_layer_ops ops = {
		.release = mxr_vp_layer_release,
		.buffer_set = mxr_vp_buffer_set,
		.stream_set = mxr_vp_stream_set,
		.format_set = mxr_vp_format_set,
		.fix_geometry = mxr_vp_fix_geometry,
	};
	char name[32];

	sprintf(name, "video%d", idx);

	layer = mxr_base_layer_create(mdev, idx, name, &ops);
	if (layer == NULL) {
		mxr_err(mdev, "failed to initialize layer(%d) base\n", idx);
		goto fail;
	}

	layer->fmt_array = mxr_video_format;
	layer->fmt_array_size = ARRAY_SIZE(mxr_video_format);

	ret = mxr_base_layer_register(layer);
	if (ret)
		goto fail_layer;

	return layer;

fail_layer:
	mxr_base_layer_release(layer);

fail:
	return NULL;
}

OpenPOWER on IntegriCloud