1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
8 #ifndef V4L2_MEDIABUS_H
9 #define V4L2_MEDIABUS_H
11 #include <linux/v4l2-mediabus.h>
12 #include <linux/bitops.h>
15 * How to use the V4L2_MBUS_* flags:
16 * Flags are defined for each of the possible states and values of a media
17 * bus configuration parameter. One and only one bit of each group of flags
18 * shall be set by the users of the v4l2_subdev_pad_ops.get_mbus_config and
19 * v4l2_subdev_pad_ops.set_mbus_config operations to ensure that no
20 * conflicting settings are specified when reporting and setting the media bus
21 * configuration with the two operations respectively. For example, it is
22 * invalid to set or clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH and the
23 * V4L2_MBUS_HSYNC_ACTIVE_LOW flag at the same time. Instead either flag
24 * V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MBUS_HSYNC_ACTIVE_LOW shall be
25 * set. The same is true for the V4L2_MBUS_CSI2_1/2/3/4_LANE flags group: only
26 * one of these four bits shall be set.
28 * TODO: replace the existing V4L2_MBUS_* flags with structures of fields
29 * to avoid conflicting settings.
32 * #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
33 * #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
34 * will be replaced by a field whose value reports the intended active state of
36 * unsigned int v4l2_mbus_hsync_active : 1;
41 * The client runs in master or in slave mode. By "Master mode" an operation
42 * mode is meant, when the client (e.g., a camera sensor) is producing
43 * horizontal and vertical synchronisation. In "Slave mode" the host is
44 * providing these signals to the slave.
46 #define V4L2_MBUS_MASTER BIT(0)
47 #define V4L2_MBUS_SLAVE BIT(1)
49 * Signal polarity flags
50 * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
51 * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
52 * configuration of hardware that uses [HV]REF signals
54 #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
55 #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
56 #define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4)
57 #define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5)
58 #define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6)
59 #define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7)
60 #define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8)
61 #define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9)
62 /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
63 #define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10)
64 /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
65 #define V4L2_MBUS_FIELD_EVEN_LOW BIT(11)
66 /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
67 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12)
68 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13)
69 #define V4L2_MBUS_DATA_ENABLE_HIGH BIT(14)
70 #define V4L2_MBUS_DATA_ENABLE_LOW BIT(15)
73 /* CSI-2 D-PHY number of data lanes. */
74 #define V4L2_MBUS_CSI2_1_LANE BIT(0)
75 #define V4L2_MBUS_CSI2_2_LANE BIT(1)
76 #define V4L2_MBUS_CSI2_3_LANE BIT(2)
77 #define V4L2_MBUS_CSI2_4_LANE BIT(3)
78 /* CSI-2 Virtual Channel identifiers. */
79 #define V4L2_MBUS_CSI2_CHANNEL_0 BIT(4)
80 #define V4L2_MBUS_CSI2_CHANNEL_1 BIT(5)
81 #define V4L2_MBUS_CSI2_CHANNEL_2 BIT(6)
82 #define V4L2_MBUS_CSI2_CHANNEL_3 BIT(7)
83 /* Clock non-continuous mode support. */
84 #define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK BIT(8)
85 #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(9)
87 #define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | \
88 V4L2_MBUS_CSI2_2_LANE | \
89 V4L2_MBUS_CSI2_3_LANE | \
90 V4L2_MBUS_CSI2_4_LANE)
91 #define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | \
92 V4L2_MBUS_CSI2_CHANNEL_1 | \
93 V4L2_MBUS_CSI2_CHANNEL_2 | \
94 V4L2_MBUS_CSI2_CHANNEL_3)
96 * Number of lanes in use, 0 == use all available lanes (default)
98 * This is a temporary fix for devices that need to reduce the number of active
99 * lanes for certain modes, until g_mbus_config() can be replaced with a better
102 #define V4L2_MBUS_CSI2_LANE_MASK (0xf << 10)
105 * enum v4l2_mbus_type - media bus type
106 * @V4L2_MBUS_UNKNOWN: unknown bus type, no V4L2 mediabus configuration
107 * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
108 * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
109 * also be used for BT.1120
110 * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface
111 * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2)
112 * @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial interface, with D-PHY
113 * @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial interface, with C-PHY
114 * @V4L2_MBUS_INVALID: invalid bus type (keep as last)
116 enum v4l2_mbus_type {
128 * struct v4l2_mbus_config - media bus configuration
129 * @type: in: interface type
130 * @flags: in / out: configuration flags, depending on @type
132 struct v4l2_mbus_config {
133 enum v4l2_mbus_type type;
138 * v4l2_fill_pix_format - Ancillary routine that fills a &struct
139 * v4l2_pix_format fields from a &struct v4l2_mbus_framefmt.
141 * @pix_fmt: pointer to &struct v4l2_pix_format to be filled
142 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
145 v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
146 const struct v4l2_mbus_framefmt *mbus_fmt)
148 pix_fmt->width = mbus_fmt->width;
149 pix_fmt->height = mbus_fmt->height;
150 pix_fmt->field = mbus_fmt->field;
151 pix_fmt->colorspace = mbus_fmt->colorspace;
152 pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
153 pix_fmt->quantization = mbus_fmt->quantization;
154 pix_fmt->xfer_func = mbus_fmt->xfer_func;
158 * v4l2_fill_mbus_format - Ancillary routine that fills a &struct
159 * v4l2_mbus_framefmt from a &struct v4l2_pix_format and a
162 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
163 * @pix_fmt: pointer to &struct v4l2_pix_format to be used as model
164 * @code: data format code (from &enum v4l2_mbus_pixelcode)
166 static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
167 const struct v4l2_pix_format *pix_fmt,
170 mbus_fmt->width = pix_fmt->width;
171 mbus_fmt->height = pix_fmt->height;
172 mbus_fmt->field = pix_fmt->field;
173 mbus_fmt->colorspace = pix_fmt->colorspace;
174 mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc;
175 mbus_fmt->quantization = pix_fmt->quantization;
176 mbus_fmt->xfer_func = pix_fmt->xfer_func;
177 mbus_fmt->code = code;
181 * v4l2_fill_pix_format_mplane - Ancillary routine that fills a &struct
182 * v4l2_pix_format_mplane fields from a media bus structure.
184 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled
185 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
188 v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt,
189 const struct v4l2_mbus_framefmt *mbus_fmt)
191 pix_mp_fmt->width = mbus_fmt->width;
192 pix_mp_fmt->height = mbus_fmt->height;
193 pix_mp_fmt->field = mbus_fmt->field;
194 pix_mp_fmt->colorspace = mbus_fmt->colorspace;
195 pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
196 pix_mp_fmt->quantization = mbus_fmt->quantization;
197 pix_mp_fmt->xfer_func = mbus_fmt->xfer_func;
201 * v4l2_fill_mbus_format_mplane - Ancillary routine that fills a &struct
202 * v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane.
204 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
205 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model
208 v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt,
209 const struct v4l2_pix_format_mplane *pix_mp_fmt)
211 mbus_fmt->width = pix_mp_fmt->width;
212 mbus_fmt->height = pix_mp_fmt->height;
213 mbus_fmt->field = pix_mp_fmt->field;
214 mbus_fmt->colorspace = pix_mp_fmt->colorspace;
215 mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc;
216 mbus_fmt->quantization = pix_mp_fmt->quantization;
217 mbus_fmt->xfer_func = pix_mp_fmt->xfer_func;