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media: videodev2.h: add request_fd field to v4l2_ext_controls

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If 'which' is V4L2_CTRL_WHICH_REQUEST_VAL, then the 'request_fd' field
can be used to specify a request for the G/S/TRY_EXT_CTRLS ioctls.

Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Alexandre Courbot
2018-05-21 04:54:35 -04:00
committed by Mauro Carvalho Chehab
parent cc6eddcd37
commit f23317adf6
3 changed files with 10 additions and 5 deletions
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4
include/uapi/linux/videodev2.h
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@@ -1606,7 +1606,8 @@ struct v4l2_ext_controls {
};
__u32 count;
__u32 error_idx;
__u32 reserved[2];
__s32 request_fd;
__u32 reserved[1];
struct v4l2_ext_control *controls;
};
@@ -1619,6 +1620,7 @@ struct v4l2_ext_controls {
#define V4L2_CTRL_MAX_DIMS (4)
#define V4L2_CTRL_WHICH_CUR_VAL 0
#define V4L2_CTRL_WHICH_DEF_VAL 0x0f000000
#define V4L2_CTRL_WHICH_REQUEST_VAL 0x0f010000
enum v4l2_ctrl_type {
V4L2_CTRL_TYPE_INTEGER = 1,