aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/soc_mediabus.c
blob: 91391214c682d46f52bae13eb53a3c7f37f2f347 (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
/*
 * soc-camera media bus helper routines
 *
 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/module.h>

#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <media/soc_mediabus.h>

#define MBUS_IDX(f) (V4L2_MBUS_FMT_ ## f - V4L2_MBUS_FMT_FIXED - 1)

static const struct soc_mbus_pixelfmt mbus_fmt[] = {
	[MBUS_IDX(YUYV8_2X8)] = {
		.fourcc			= V4L2_PIX_FMT_YUYV,
		.name			= "YUYV",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(YVYU8_2X8)] = {
		.fourcc			= V4L2_PIX_FMT_YVYU,
		.name			= "YVYU",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(UYVY8_2X8)] = {
		.fourcc			= V4L2_PIX_FMT_UYVY,
		.name			= "UYVY",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(VYUY8_2X8)] = {
		.fourcc			= V4L2_PIX_FMT_VYUY,
		.name			= "VYUY",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(RGB555_2X8_PADHI_LE)] = {
		.fourcc			= V4L2_PIX_FMT_RGB555,
		.name			= "RGB555",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(RGB555_2X8_PADHI_BE)] = {
		.fourcc			= V4L2_PIX_FMT_RGB555X,
		.name			= "RGB555X",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(RGB565_2X8_LE)] = {
		.fourcc			= V4L2_PIX_FMT_RGB565,
		.name			= "RGB565",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(RGB565_2X8_BE)] = {
		.fourcc			= V4L2_PIX_FMT_RGB565X,
		.name			= "RGB565X",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(SBGGR8_1X8)] = {
		.fourcc			= V4L2_PIX_FMT_SBGGR8,
		.name			= "Bayer 8 BGGR",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_NONE,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(SBGGR10_1X10)] = {
		.fourcc			= V4L2_PIX_FMT_SBGGR10,
		.name			= "Bayer 10 BGGR",
		.bits_per_sample	= 10,
		.packing		= SOC_MBUS_PACKING_EXTEND16,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(GREY8_1X8)] = {
		.fourcc			= V4L2_PIX_FMT_GREY,
		.name			= "Grey",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_NONE,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(Y10_1X10)] = {
		.fourcc			= V4L2_PIX_FMT_Y10,
		.name			= "Grey 10bit",
		.bits_per_sample	= 10,
		.packing		= SOC_MBUS_PACKING_EXTEND16,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(SBGGR10_2X8_PADHI_LE)] = {
		.fourcc			= V4L2_PIX_FMT_SBGGR10,
		.name			= "Bayer 10 BGGR",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(SBGGR10_2X8_PADLO_LE)] = {
		.fourcc			= V4L2_PIX_FMT_SBGGR10,
		.name			= "Bayer 10 BGGR",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADLO,
		.order			= SOC_MBUS_ORDER_LE,
	},
	[MBUS_IDX(SBGGR10_2X8_PADHI_BE)] = {
		.fourcc			= V4L2_PIX_FMT_SBGGR10,
		.name			= "Bayer 10 BGGR",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADHI,
		.order			= SOC_MBUS_ORDER_BE,
	},
	[MBUS_IDX(SBGGR10_2X8_PADLO_BE)] = {
		.fourcc			= V4L2_PIX_FMT_SBGGR10,
		.name			= "Bayer 10 BGGR",
		.bits_per_sample	= 8,
		.packing		= SOC_MBUS_PACKING_2X8_PADLO,
		.order			= SOC_MBUS_ORDER_BE,
	},
};

s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf)
{
	switch (mf->packing) {
	case SOC_MBUS_PACKING_NONE:
		return width * mf->bits_per_sample / 8;
	case SOC_MBUS_PACKING_2X8_PADHI:
	case SOC_MBUS_PACKING_2X8_PADLO:
	case SOC_MBUS_PACKING_EXTEND16:
		return width * 2;
	}
	return -EINVAL;
}
EXPORT_SYMBOL(soc_mbus_bytes_per_line);

const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
	enum v4l2_mbus_pixelcode code)
{
	if (code - V4L2_MBUS_FMT_FIXED > ARRAY_SIZE(mbus_fmt) ||
	    code <= V4L2_MBUS_FMT_FIXED)
		return NULL;
	return mbus_fmt + code - V4L2_MBUS_FMT_FIXED - 1;
}
EXPORT_SYMBOL(soc_mbus_get_fmtdesc);

static int __init soc_mbus_init(void)
{
	return 0;
}

static void __exit soc_mbus_exit(void)
{
}

module_init(soc_mbus_init);
module_exit(soc_mbus_exit);

MODULE_DESCRIPTION("soc-camera media bus interface");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
MODULE_LICENSE("GPL v2");