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Linux kernel mirror (for testing)
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kernel
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linux
1/*
2 * Media Bus API header
3 *
4 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef V4L2_MEDIABUS_H
12#define V4L2_MEDIABUS_H
13
14#include <linux/v4l2-mediabus.h>
15#include <linux/bitops.h>
16
17
18/* Parallel flags */
19/*
20 * Can the client run in master or in slave mode. By "Master mode" an operation
21 * mode is meant, when the client (e.g., a camera sensor) is producing
22 * horizontal and vertical synchronisation. In "Slave mode" the host is
23 * providing these signals to the slave.
24 */
25#define V4L2_MBUS_MASTER BIT(0)
26#define V4L2_MBUS_SLAVE BIT(1)
27/*
28 * Signal polarity flags
29 * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
30 * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
31 * configuration of hardware that uses [HV]REF signals
32 */
33#define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
34#define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
35#define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4)
36#define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5)
37#define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6)
38#define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7)
39#define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8)
40#define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9)
41/* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
42#define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10)
43/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
44#define V4L2_MBUS_FIELD_EVEN_LOW BIT(11)
45/* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
46#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12)
47#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13)
48
49/* Serial flags */
50/* How many lanes the client can use */
51#define V4L2_MBUS_CSI2_1_LANE BIT(0)
52#define V4L2_MBUS_CSI2_2_LANE BIT(1)
53#define V4L2_MBUS_CSI2_3_LANE BIT(2)
54#define V4L2_MBUS_CSI2_4_LANE BIT(3)
55/* On which channels it can send video data */
56#define V4L2_MBUS_CSI2_CHANNEL_0 BIT(4)
57#define V4L2_MBUS_CSI2_CHANNEL_1 BIT(5)
58#define V4L2_MBUS_CSI2_CHANNEL_2 BIT(6)
59#define V4L2_MBUS_CSI2_CHANNEL_3 BIT(7)
60/* Does it support only continuous or also non-continuous clock mode */
61#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK BIT(8)
62#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(9)
63
64#define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \
65 V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE)
66#define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \
67 V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3)
68
69/**
70 * enum v4l2_mbus_type - media bus type
71 * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
72 * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
73 * also be used for BT.1120
74 * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface
75 * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2)
76 * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface
77 */
78enum v4l2_mbus_type {
79 V4L2_MBUS_PARALLEL,
80 V4L2_MBUS_BT656,
81 V4L2_MBUS_CSI1,
82 V4L2_MBUS_CCP2,
83 V4L2_MBUS_CSI2,
84};
85
86/**
87 * struct v4l2_mbus_config - media bus configuration
88 * @type: in: interface type
89 * @flags: in / out: configuration flags, depending on @type
90 */
91struct v4l2_mbus_config {
92 enum v4l2_mbus_type type;
93 unsigned int flags;
94};
95
96/**
97 * v4l2_fill_pix_format - Ancillary routine that fills a &struct
98 * v4l2_pix_format fields from a &struct v4l2_mbus_framefmt.
99 *
100 * @pix_fmt: pointer to &struct v4l2_pix_format to be filled
101 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
102 */
103static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
104 const struct v4l2_mbus_framefmt *mbus_fmt)
105{
106 pix_fmt->width = mbus_fmt->width;
107 pix_fmt->height = mbus_fmt->height;
108 pix_fmt->field = mbus_fmt->field;
109 pix_fmt->colorspace = mbus_fmt->colorspace;
110 pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
111 pix_fmt->quantization = mbus_fmt->quantization;
112 pix_fmt->xfer_func = mbus_fmt->xfer_func;
113}
114
115/**
116 * v4l2_fill_pix_format - Ancillary routine that fills a &struct
117 * v4l2_mbus_framefmt from a &struct v4l2_pix_format and a
118 * data format code.
119 *
120 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
121 * @pix_fmt: pointer to &struct v4l2_pix_format to be used as model
122 * @code: data format code (from &enum v4l2_mbus_pixelcode)
123 */
124static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
125 const struct v4l2_pix_format *pix_fmt,
126 u32 code)
127{
128 mbus_fmt->width = pix_fmt->width;
129 mbus_fmt->height = pix_fmt->height;
130 mbus_fmt->field = pix_fmt->field;
131 mbus_fmt->colorspace = pix_fmt->colorspace;
132 mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc;
133 mbus_fmt->quantization = pix_fmt->quantization;
134 mbus_fmt->xfer_func = pix_fmt->xfer_func;
135 mbus_fmt->code = code;
136}
137
138/**
139 * v4l2_fill_pix_format - Ancillary routine that fills a &struct
140 * v4l2_pix_format_mplane fields from a media bus structure.
141 *
142 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled
143 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
144 */
145static inline void v4l2_fill_pix_format_mplane(
146 struct v4l2_pix_format_mplane *pix_mp_fmt,
147 const struct v4l2_mbus_framefmt *mbus_fmt)
148{
149 pix_mp_fmt->width = mbus_fmt->width;
150 pix_mp_fmt->height = mbus_fmt->height;
151 pix_mp_fmt->field = mbus_fmt->field;
152 pix_mp_fmt->colorspace = mbus_fmt->colorspace;
153 pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
154 pix_mp_fmt->quantization = mbus_fmt->quantization;
155 pix_mp_fmt->xfer_func = mbus_fmt->xfer_func;
156}
157
158/**
159 * v4l2_fill_pix_format - Ancillary routine that fills a &struct
160 * v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane.
161 *
162 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
163 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model
164 */
165static inline void v4l2_fill_mbus_format_mplane(
166 struct v4l2_mbus_framefmt *mbus_fmt,
167 const struct v4l2_pix_format_mplane *pix_mp_fmt)
168{
169 mbus_fmt->width = pix_mp_fmt->width;
170 mbus_fmt->height = pix_mp_fmt->height;
171 mbus_fmt->field = pix_mp_fmt->field;
172 mbus_fmt->colorspace = pix_mp_fmt->colorspace;
173 mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc;
174 mbus_fmt->quantization = pix_mp_fmt->quantization;
175 mbus_fmt->xfer_func = pix_mp_fmt->xfer_func;
176}
177
178#endif