1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * V4L2 subdev userspace API
5 * Copyright (C) 2010 Nokia Corporation
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #ifndef __LINUX_V4L2_SUBDEV_H
25 #define __LINUX_V4L2_SUBDEV_H
27 #include <linux/ioctl.h>
28 #include <linux/types.h>
29 #include <linux/v4l2-common.h>
30 #include <linux/v4l2-mediabus.h>
33 * enum v4l2_subdev_format_whence - Media bus format type
34 * @V4L2_SUBDEV_FORMAT_TRY: try format, for negotiation only
35 * @V4L2_SUBDEV_FORMAT_ACTIVE: active format, applied to the device
37 enum v4l2_subdev_format_whence {
38 V4L2_SUBDEV_FORMAT_TRY = 0,
39 V4L2_SUBDEV_FORMAT_ACTIVE = 1,
43 * struct v4l2_subdev_format - Pad-level media bus format
44 * @which: format type (from enum v4l2_subdev_format_whence)
45 * @pad: pad number, as reported by the media API
46 * @format: media bus format (format code and frame size)
48 struct v4l2_subdev_format {
51 struct v4l2_mbus_framefmt format;
56 * struct v4l2_subdev_crop - Pad-level crop settings
57 * @which: format type (from enum v4l2_subdev_format_whence)
58 * @pad: pad number, as reported by the media API
59 * @rect: pad crop rectangle boundaries
61 struct v4l2_subdev_crop {
64 struct v4l2_rect rect;
68 #define V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE 0x00000001
69 #define V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC 0x00000002
70 #define V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC 0x00000004
71 #define V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC
72 #define V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION 0x00000008
75 * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
76 * @pad: pad number, as reported by the media API
77 * @index: format index during enumeration
78 * @code: format code (MEDIA_BUS_FMT_ definitions)
79 * @which: format type (from enum v4l2_subdev_format_whence)
80 * @flags: flags set by the driver, (V4L2_SUBDEV_MBUS_CODE_*)
82 struct v4l2_subdev_mbus_code_enum {
92 * struct v4l2_subdev_frame_size_enum - Media bus format enumeration
93 * @pad: pad number, as reported by the media API
94 * @index: format index during enumeration
95 * @code: format code (MEDIA_BUS_FMT_ definitions)
96 * @which: format type (from enum v4l2_subdev_format_whence)
98 struct v4l2_subdev_frame_size_enum {
111 * struct v4l2_subdev_frame_interval - Pad-level frame rate
112 * @pad: pad number, as reported by the media API
113 * @interval: frame interval in seconds
115 struct v4l2_subdev_frame_interval {
117 struct v4l2_fract interval;
122 * struct v4l2_subdev_frame_interval_enum - Frame interval enumeration
123 * @pad: pad number, as reported by the media API
124 * @index: frame interval index during enumeration
125 * @code: format code (MEDIA_BUS_FMT_ definitions)
126 * @width: frame width in pixels
127 * @height: frame height in pixels
128 * @interval: frame interval in seconds
129 * @which: format type (from enum v4l2_subdev_format_whence)
131 struct v4l2_subdev_frame_interval_enum {
137 struct v4l2_fract interval;
143 * struct v4l2_subdev_selection - selection info
145 * @which: either V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY
146 * @pad: pad number, as reported by the media API
147 * @target: Selection target, used to choose one of possible rectangles,
148 * defined in v4l2-common.h; V4L2_SEL_TGT_* .
149 * @flags: constraint flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
150 * @r: coordinates of the selection window
151 * @reserved: for future use, set to zero for now
153 * Hardware may use multiple helper windows to process a video stream.
154 * The structure is used to exchange this selection areas between
155 * an application and a driver.
157 struct v4l2_subdev_selection {
167 * struct v4l2_subdev_capability - subdev capabilities
168 * @version: the driver versioning number
169 * @capabilities: the subdev capabilities, see V4L2_SUBDEV_CAP_*
170 * @reserved: for future use, set to zero for now
172 struct v4l2_subdev_capability {
178 /* The v4l2 sub-device video device node is registered in read-only mode. */
179 #define V4L2_SUBDEV_CAP_RO_SUBDEV BIT(0)
181 /* Backwards compatibility define --- to be removed */
182 #define v4l2_subdev_edid v4l2_edid
184 #define VIDIOC_SUBDEV_QUERYCAP _IOR('V', 0, struct v4l2_subdev_capability)
185 #define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_format)
186 #define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_format)
187 #define VIDIOC_SUBDEV_G_FRAME_INTERVAL _IOWR('V', 21, struct v4l2_subdev_frame_interval)
188 #define VIDIOC_SUBDEV_S_FRAME_INTERVAL _IOWR('V', 22, struct v4l2_subdev_frame_interval)
189 #define VIDIOC_SUBDEV_ENUM_MBUS_CODE _IOWR('V', 2, struct v4l2_subdev_mbus_code_enum)
190 #define VIDIOC_SUBDEV_ENUM_FRAME_SIZE _IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
191 #define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
192 #define VIDIOC_SUBDEV_G_CROP _IOWR('V', 59, struct v4l2_subdev_crop)
193 #define VIDIOC_SUBDEV_S_CROP _IOWR('V', 60, struct v4l2_subdev_crop)
194 #define VIDIOC_SUBDEV_G_SELECTION _IOWR('V', 61, struct v4l2_subdev_selection)
195 #define VIDIOC_SUBDEV_S_SELECTION _IOWR('V', 62, struct v4l2_subdev_selection)
196 /* The following ioctls are identical to the ioctls in videodev2.h */
197 #define VIDIOC_SUBDEV_G_STD _IOR('V', 23, v4l2_std_id)
198 #define VIDIOC_SUBDEV_S_STD _IOW('V', 24, v4l2_std_id)
199 #define VIDIOC_SUBDEV_ENUMSTD _IOWR('V', 25, struct v4l2_standard)
200 #define VIDIOC_SUBDEV_G_EDID _IOWR('V', 40, struct v4l2_edid)
201 #define VIDIOC_SUBDEV_S_EDID _IOWR('V', 41, struct v4l2_edid)
202 #define VIDIOC_SUBDEV_QUERYSTD _IOR('V', 63, v4l2_std_id)
203 #define VIDIOC_SUBDEV_S_DV_TIMINGS _IOWR('V', 87, struct v4l2_dv_timings)
204 #define VIDIOC_SUBDEV_G_DV_TIMINGS _IOWR('V', 88, struct v4l2_dv_timings)
205 #define VIDIOC_SUBDEV_ENUM_DV_TIMINGS _IOWR('V', 98, struct v4l2_enum_dv_timings)
206 #define VIDIOC_SUBDEV_QUERY_DV_TIMINGS _IOR('V', 99, struct v4l2_dv_timings)
207 #define VIDIOC_SUBDEV_DV_TIMINGS_CAP _IOWR('V', 100, struct v4l2_dv_timings_cap)