1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 * V4L2 subdev userspace API
4 *
5 * Copyright (C) 2010 Nokia Corporation
6 *
7 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
8 * Sakari Ailus <sakari.ailus@iki.fi>
9 */
10
11#ifndef __LINUX_V4L2_SUBDEV_H
12#define __LINUX_V4L2_SUBDEV_H
13
14#include <linux/const.h>
15#include <linux/ioctl.h>
16#include <linux/types.h>
17#include <linux/v4l2-common.h>
18#include <linux/v4l2-mediabus.h>
19
20/**
21 * enum v4l2_subdev_format_whence - Media bus format type
22 * @V4L2_SUBDEV_FORMAT_TRY: try format, for negotiation only
23 * @V4L2_SUBDEV_FORMAT_ACTIVE: active format, applied to the device
24 */
25enum v4l2_subdev_format_whence {
26 V4L2_SUBDEV_FORMAT_TRY = 0,
27 V4L2_SUBDEV_FORMAT_ACTIVE = 1,
28};
29
30/**
31 * struct v4l2_subdev_format - Pad-level media bus format
32 * @which: format type (from enum v4l2_subdev_format_whence)
33 * @pad: pad number, as reported by the media API
34 * @format: media bus format (format code and frame size)
35 * @stream: stream number, defined in subdev routing
36 * @reserved: drivers and applications must zero this array
37 */
38struct v4l2_subdev_format {
39 __u32 which;
40 __u32 pad;
41 struct v4l2_mbus_framefmt format;
42 __u32 stream;
43 __u32 reserved[7];
44};
45
46/**
47 * struct v4l2_subdev_crop - Pad-level crop settings
48 * @which: format type (from enum v4l2_subdev_format_whence)
49 * @pad: pad number, as reported by the media API
50 * @rect: pad crop rectangle boundaries
51 * @stream: stream number, defined in subdev routing
52 * @reserved: drivers and applications must zero this array
53 *
54 * The subdev crop API is an obsolete interface and may be removed in the
55 * future. It is superseded by the selection API. No new extensions to this
56 * structure will be accepted.
57 */
58struct v4l2_subdev_crop {
59 __u32 which;
60 __u32 pad;
61 struct v4l2_rect rect;
62 __u32 stream;
63 __u32 reserved[7];
64};
65
66#define V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE 0x00000001
67#define V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC 0x00000002
68#define V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC 0x00000004
69#define V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC
70#define V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION 0x00000008
71
72/**
73 * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
74 * @pad: pad number, as reported by the media API
75 * @index: format index during enumeration
76 * @code: format code (MEDIA_BUS_FMT_ definitions)
77 * @which: format type (from enum v4l2_subdev_format_whence)
78 * @flags: flags set by the driver, (V4L2_SUBDEV_MBUS_CODE_*)
79 * @stream: stream number, defined in subdev routing
80 * @reserved: drivers and applications must zero this array
81 */
82struct v4l2_subdev_mbus_code_enum {
83 __u32 pad;
84 __u32 index;
85 __u32 code;
86 __u32 which;
87 __u32 flags;
88 __u32 stream;
89 __u32 reserved[6];
90};
91
92/**
93 * struct v4l2_subdev_frame_size_enum - Media bus format enumeration
94 * @index: format index during enumeration
95 * @pad: pad number, as reported by the media API
96 * @code: format code (MEDIA_BUS_FMT_ definitions)
97 * @min_width: minimum frame width, in pixels
98 * @max_width: maximum frame width, in pixels
99 * @min_height: minimum frame height, in pixels
100 * @max_height: maximum frame height, in pixels
101 * @which: format type (from enum v4l2_subdev_format_whence)
102 * @stream: stream number, defined in subdev routing
103 * @reserved: drivers and applications must zero this array
104 */
105struct v4l2_subdev_frame_size_enum {
106 __u32 index;
107 __u32 pad;
108 __u32 code;
109 __u32 min_width;
110 __u32 max_width;
111 __u32 min_height;
112 __u32 max_height;
113 __u32 which;
114 __u32 stream;
115 __u32 reserved[7];
116};
117
118/**
119 * struct v4l2_subdev_frame_interval - Pad-level frame rate
120 * @pad: pad number, as reported by the media API
121 * @interval: frame interval in seconds
122 * @stream: stream number, defined in subdev routing
123 * @which: interval type (from enum v4l2_subdev_format_whence)
124 * @reserved: drivers and applications must zero this array
125 */
126struct v4l2_subdev_frame_interval {
127 __u32 pad;
128 struct v4l2_fract interval;
129 __u32 stream;
130 __u32 which;
131 __u32 reserved[7];
132};
133
134/**
135 * struct v4l2_subdev_frame_interval_enum - Frame interval enumeration
136 * @pad: pad number, as reported by the media API
137 * @index: frame interval index during enumeration
138 * @code: format code (MEDIA_BUS_FMT_ definitions)
139 * @width: frame width in pixels
140 * @height: frame height in pixels
141 * @interval: frame interval in seconds
142 * @which: interval type (from enum v4l2_subdev_format_whence)
143 * @stream: stream number, defined in subdev routing
144 * @reserved: drivers and applications must zero this array
145 */
146struct v4l2_subdev_frame_interval_enum {
147 __u32 index;
148 __u32 pad;
149 __u32 code;
150 __u32 width;
151 __u32 height;
152 struct v4l2_fract interval;
153 __u32 which;
154 __u32 stream;
155 __u32 reserved[7];
156};
157
158/**
159 * struct v4l2_subdev_selection - selection info
160 *
161 * @which: either V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY
162 * @pad: pad number, as reported by the media API
163 * @target: Selection target, used to choose one of possible rectangles,
164 * defined in v4l2-common.h; V4L2_SEL_TGT_* .
165 * @flags: constraint flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
166 * @r: coordinates of the selection window
167 * @stream: stream number, defined in subdev routing
168 * @reserved: for future use, set to zero for now
169 *
170 * Hardware may use multiple helper windows to process a video stream.
171 * The structure is used to exchange this selection areas between
172 * an application and a driver.
173 */
174struct v4l2_subdev_selection {
175 __u32 which;
176 __u32 pad;
177 __u32 target;
178 __u32 flags;
179 struct v4l2_rect r;
180 __u32 stream;
181 __u32 reserved[7];
182};
183
184/**
185 * struct v4l2_subdev_capability - subdev capabilities
186 * @version: the driver versioning number
187 * @capabilities: the subdev capabilities, see V4L2_SUBDEV_CAP_*
188 * @reserved: for future use, set to zero for now
189 */
190struct v4l2_subdev_capability {
191 __u32 version;
192 __u32 capabilities;
193 __u32 reserved[14];
194};
195
196/* The v4l2 sub-device video device node is registered in read-only mode. */
197#define V4L2_SUBDEV_CAP_RO_SUBDEV 0x00000001
198
199/* The v4l2 sub-device supports routing and multiplexed streams. */
200#define V4L2_SUBDEV_CAP_STREAMS 0x00000002
201
202/*
203 * Is the route active? An active route will start when streaming is enabled
204 * on a video node.
205 */
206#define V4L2_SUBDEV_ROUTE_FL_ACTIVE (1U << 0)
207
208/**
209 * struct v4l2_subdev_route - A route inside a subdev
210 *
211 * @sink_pad: the sink pad index
212 * @sink_stream: the sink stream identifier
213 * @source_pad: the source pad index
214 * @source_stream: the source stream identifier
215 * @flags: route flags V4L2_SUBDEV_ROUTE_FL_*
216 * @reserved: drivers and applications must zero this array
217 */
218struct v4l2_subdev_route {
219 __u32 sink_pad;
220 __u32 sink_stream;
221 __u32 source_pad;
222 __u32 source_stream;
223 __u32 flags;
224 __u32 reserved[5];
225};
226
227/**
228 * struct v4l2_subdev_routing - Subdev routing information
229 *
230 * @which: configuration type (from enum v4l2_subdev_format_whence)
231 * @len_routes: the length of the routes array, in routes; set by the user, not
232 * modified by the kernel
233 * @routes: pointer to the routes array
234 * @num_routes: the total number of routes, possibly more than fits in the
235 * routes array
236 * @reserved: drivers and applications must zero this array
237 */
238struct v4l2_subdev_routing {
239 __u32 which;
240 __u32 len_routes;
241 __u64 routes;
242 __u32 num_routes;
243 __u32 reserved[11];
244};
245
246/*
247 * The client is aware of streams. Setting this flag enables the use of 'stream'
248 * fields (referring to the stream number) with various ioctls. If this is not
249 * set (which is the default), the 'stream' fields will be forced to 0 by the
250 * kernel.
251 */
252#define V4L2_SUBDEV_CLIENT_CAP_STREAMS (1ULL << 0)
253
254/*
255 * The client is aware of the struct v4l2_subdev_frame_interval which field. If
256 * this is not set (which is the default), the which field is forced to
257 * V4L2_SUBDEV_FORMAT_ACTIVE by the kernel.
258 */
259#define V4L2_SUBDEV_CLIENT_CAP_INTERVAL_USES_WHICH (1ULL << 1)
260
261/**
262 * struct v4l2_subdev_client_capability - Capabilities of the client accessing
263 * the subdev
264 *
265 * @capabilities: A bitmask of V4L2_SUBDEV_CLIENT_CAP_* flags.
266 */
267struct v4l2_subdev_client_capability {
268 __u64 capabilities;
269};
270
271/* Backwards compatibility define --- to be removed */
272#define v4l2_subdev_edid v4l2_edid
273
274#define VIDIOC_SUBDEV_QUERYCAP _IOR('V', 0, struct v4l2_subdev_capability)
275#define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_format)
276#define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_format)
277#define VIDIOC_SUBDEV_G_FRAME_INTERVAL _IOWR('V', 21, struct v4l2_subdev_frame_interval)
278#define VIDIOC_SUBDEV_S_FRAME_INTERVAL _IOWR('V', 22, struct v4l2_subdev_frame_interval)
279#define VIDIOC_SUBDEV_ENUM_MBUS_CODE _IOWR('V', 2, struct v4l2_subdev_mbus_code_enum)
280#define VIDIOC_SUBDEV_ENUM_FRAME_SIZE _IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
281#define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
282#define VIDIOC_SUBDEV_G_CROP _IOWR('V', 59, struct v4l2_subdev_crop)
283#define VIDIOC_SUBDEV_S_CROP _IOWR('V', 60, struct v4l2_subdev_crop)
284#define VIDIOC_SUBDEV_G_SELECTION _IOWR('V', 61, struct v4l2_subdev_selection)
285#define VIDIOC_SUBDEV_S_SELECTION _IOWR('V', 62, struct v4l2_subdev_selection)
286#define VIDIOC_SUBDEV_G_ROUTING _IOWR('V', 38, struct v4l2_subdev_routing)
287#define VIDIOC_SUBDEV_S_ROUTING _IOWR('V', 39, struct v4l2_subdev_routing)
288#define VIDIOC_SUBDEV_G_CLIENT_CAP _IOR('V', 101, struct v4l2_subdev_client_capability)
289#define VIDIOC_SUBDEV_S_CLIENT_CAP _IOWR('V', 102, struct v4l2_subdev_client_capability)
290
291/* The following ioctls are identical to the ioctls in videodev2.h */
292#define VIDIOC_SUBDEV_G_STD _IOR('V', 23, v4l2_std_id)
293#define VIDIOC_SUBDEV_S_STD _IOW('V', 24, v4l2_std_id)
294#define VIDIOC_SUBDEV_ENUMSTD _IOWR('V', 25, struct v4l2_standard)
295#define VIDIOC_SUBDEV_G_EDID _IOWR('V', 40, struct v4l2_edid)
296#define VIDIOC_SUBDEV_S_EDID _IOWR('V', 41, struct v4l2_edid)
297#define VIDIOC_SUBDEV_QUERYSTD _IOR('V', 63, v4l2_std_id)
298#define VIDIOC_SUBDEV_S_DV_TIMINGS _IOWR('V', 87, struct v4l2_dv_timings)
299#define VIDIOC_SUBDEV_G_DV_TIMINGS _IOWR('V', 88, struct v4l2_dv_timings)
300#define VIDIOC_SUBDEV_ENUM_DV_TIMINGS _IOWR('V', 98, struct v4l2_enum_dv_timings)
301#define VIDIOC_SUBDEV_QUERY_DV_TIMINGS _IOR('V', 99, struct v4l2_dv_timings)
302#define VIDIOC_SUBDEV_DV_TIMINGS_CAP _IOWR('V', 100, struct v4l2_dv_timings_cap)
303
304#endif
305

source code of linux/include/uapi/linux/v4l2-subdev.h

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