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
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Media Bus API header
*
* Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*/
#ifndef V4L2_MEDIABUS_H
#define V4L2_MEDIABUS_H
#include <linux/v4l2-mediabus.h>
#include <linux/bitops.h>
/*
* How to use the V4L2_MBUS_* flags:
* Flags are defined for each of the possible states and values of a media
* bus configuration parameter. One and only one bit of each group of flags
* shall be set by the users of the v4l2_subdev_pad_ops.get_mbus_config
* operation to ensure that no conflicting settings are specified when
* reporting the media bus configuration. For example, it is invalid to set or
* clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH and the
* V4L2_MBUS_HSYNC_ACTIVE_LOW flag at the same time. Instead either flag
* V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MBUS_HSYNC_ACTIVE_LOW shall be set.
*
* TODO: replace the existing V4L2_MBUS_* flags with structures of fields
* to avoid conflicting settings.
*
* In example:
* #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
* #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
* will be replaced by a field whose value reports the intended active state of
* the signal:
* unsigned int v4l2_mbus_hsync_active : 1;
*/
/* Parallel flags */
/*
* The client runs in master or in slave mode. By "Master mode" an operation
* mode is meant, when the client (e.g., a camera sensor) is producing
* horizontal and vertical synchronisation. In "Slave mode" the host is
* providing these signals to the slave.
*/
#define V4L2_MBUS_MASTER BIT(0)
#define V4L2_MBUS_SLAVE BIT(1)
/*
* Signal polarity flags
* Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
* V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
* configuration of hardware that uses [HV]REF signals
*/
#define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
#define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
#define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4)
#define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5)
#define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6)
#define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7)
#define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8)
#define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9)
/* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
#define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10)
/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
#define V4L2_MBUS_FIELD_EVEN_LOW BIT(11)
/* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12)
#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13)
#define V4L2_MBUS_DATA_ENABLE_HIGH BIT(14)
#define V4L2_MBUS_DATA_ENABLE_LOW BIT(15)
/* Serial flags */
/* Clock non-continuous mode support. */
#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(0)
#define V4L2_MBUS_CSI2_MAX_DATA_LANES 8
/**
* struct v4l2_mbus_config_mipi_csi2 - MIPI CSI-2 data bus configuration
* @flags: media bus (V4L2_MBUS_*) flags
* @data_lanes: an array of physical data lane indexes
* @clock_lane: physical lane index of the clock lane
* @num_data_lanes: number of data lanes
* @lane_polarities: polarity of the lanes. The order is the same of
* the physical lanes.
*/
struct v4l2_mbus_config_mipi_csi2 {
unsigned int flags;
unsigned char data_lanes[V4L2_MBUS_CSI2_MAX_DATA_LANES];
unsigned char clock_lane;
unsigned char num_data_lanes;
bool lane_polarities[1 + V4L2_MBUS_CSI2_MAX_DATA_LANES];
};
/**
* struct v4l2_mbus_config_parallel - parallel data bus configuration
* @flags: media bus (V4L2_MBUS_*) flags
* @bus_width: bus width in bits
* @data_shift: data shift in bits
*/
struct v4l2_mbus_config_parallel {
unsigned int flags;
unsigned char bus_width;
unsigned char data_shift;
};
/**
* struct v4l2_mbus_config_mipi_csi1 - CSI-1/CCP2 data bus configuration
* @clock_inv: polarity of clock/strobe signal
* false - not inverted, true - inverted
* @strobe: false - data/clock, true - data/strobe
* @lane_polarity: the polarities of the clock (index 0) and data lanes
* index (1)
* @data_lane: the number of the data lane
* @clock_lane: the number of the clock lane
*/
struct v4l2_mbus_config_mipi_csi1 {
unsigned char clock_inv:1;
unsigned char strobe:1;
bool lane_polarity[2];
unsigned char data_lane;
unsigned char clock_lane;
};
/**
* enum v4l2_mbus_type - media bus type
* @V4L2_MBUS_UNKNOWN: unknown bus type, no V4L2 mediabus configuration
* @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
* @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
* also be used for BT.1120
* @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface
* @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2)
* @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial interface, with D-PHY
* @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial interface, with C-PHY
* @V4L2_MBUS_INVALID: invalid bus type (keep as last)
*/
enum v4l2_mbus_type {
V4L2_MBUS_UNKNOWN,
V4L2_MBUS_PARALLEL,
V4L2_MBUS_BT656,
V4L2_MBUS_CSI1,
V4L2_MBUS_CCP2,
V4L2_MBUS_CSI2_DPHY,
V4L2_MBUS_CSI2_CPHY,
V4L2_MBUS_INVALID,
};
/**
* struct v4l2_mbus_config - media bus configuration
* @type: interface type
* @bus: bus configuration data structure
* @bus.parallel: embedded &struct v4l2_mbus_config_parallel.
* Used if the bus is parallel or BT.656.
* @bus.mipi_csi1: embedded &struct v4l2_mbus_config_mipi_csi1.
* Used if the bus is MIPI Alliance's Camera Serial
* Interface version 1 (MIPI CSI1) or Standard
* Mobile Imaging Architecture's Compact Camera Port 2
* (SMIA CCP2).
* @bus.mipi_csi2: embedded &struct v4l2_mbus_config_mipi_csi2.
* Used if the bus is MIPI Alliance's Camera Serial
* Interface version 2 (MIPI CSI2).
*/
struct v4l2_mbus_config {
enum v4l2_mbus_type type;
union {
struct v4l2_mbus_config_parallel parallel;
struct v4l2_mbus_config_mipi_csi1 mipi_csi1;
struct v4l2_mbus_config_mipi_csi2 mipi_csi2;
} bus;
};
/**
* v4l2_fill_pix_format - Ancillary routine that fills a &struct
* v4l2_pix_format fields from a &struct v4l2_mbus_framefmt.
*
* @pix_fmt: pointer to &struct v4l2_pix_format to be filled
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
*/
static inline void
v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
const struct v4l2_mbus_framefmt *mbus_fmt)
{
pix_fmt->width = mbus_fmt->width;
pix_fmt->height = mbus_fmt->height;
pix_fmt->field = mbus_fmt->field;
pix_fmt->colorspace = mbus_fmt->colorspace;
pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
pix_fmt->quantization = mbus_fmt->quantization;
pix_fmt->xfer_func = mbus_fmt->xfer_func;
}
/**
* v4l2_fill_mbus_format - Ancillary routine that fills a &struct
* v4l2_mbus_framefmt from a &struct v4l2_pix_format and a
* data format code.
*
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
* @pix_fmt: pointer to &struct v4l2_pix_format to be used as model
* @code: data format code (from &enum v4l2_mbus_pixelcode)
*/
static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
const struct v4l2_pix_format *pix_fmt,
u32 code)
{
mbus_fmt->width = pix_fmt->width;
mbus_fmt->height = pix_fmt->height;
mbus_fmt->field = pix_fmt->field;
mbus_fmt->colorspace = pix_fmt->colorspace;
mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc;
mbus_fmt->quantization = pix_fmt->quantization;
mbus_fmt->xfer_func = pix_fmt->xfer_func;
mbus_fmt->code = code;
}
/**
* v4l2_fill_pix_format_mplane - Ancillary routine that fills a &struct
* v4l2_pix_format_mplane fields from a media bus structure.
*
* @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
*/
static inline void
v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt,
const struct v4l2_mbus_framefmt *mbus_fmt)
{
pix_mp_fmt->width = mbus_fmt->width;
pix_mp_fmt->height = mbus_fmt->height;
pix_mp_fmt->field = mbus_fmt->field;
pix_mp_fmt->colorspace = mbus_fmt->colorspace;
pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
pix_mp_fmt->quantization = mbus_fmt->quantization;
pix_mp_fmt->xfer_func = mbus_fmt->xfer_func;
}
/**
* v4l2_fill_mbus_format_mplane - Ancillary routine that fills a &struct
* v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane.
*
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
* @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model
*/
static inline void
v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt,
const struct v4l2_pix_format_mplane *pix_mp_fmt)
{
mbus_fmt->width = pix_mp_fmt->width;
mbus_fmt->height = pix_mp_fmt->height;
mbus_fmt->field = pix_mp_fmt->field;
mbus_fmt->colorspace = pix_mp_fmt->colorspace;
mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc;
mbus_fmt->quantization = pix_mp_fmt->quantization;
mbus_fmt->xfer_func = pix_mp_fmt->xfer_func;
}
#endif
|
