diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2025-02-03 11:55:38 +0000 |
|---|---|---|
| committer | Hans Verkuil <hverkuil@xs4all.nl> | 2025-03-03 18:23:35 +0100 |
| commit | a5bd42aafb068427ecf4d6d34fa023944f211922 (patch) | |
| tree | 77164fcd5b93a66bb27ed5cc16da5955a06a17b2 /drivers/media/v4l2-core/v4l2-ioctl.c | |
| parent | 3b9d7340cfac91f8a2ac237a6787f521f1440ca3 (diff) | |
media: v4l2-ctrls: add support for V4L2_CTRL_WHICH_MIN/MAX_VAL
Add the capability of retrieving the min and max values of a
compound control.
[Ricardo: Added static to v4l2_ctrl_type_op_(maximum|minimum) proto]
[Ricardo: Fix documentation]
Signed-off-by: Yunke Cao <yunkec@google.com>
Tested-by: Yunke Cao <yunkec@google.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://lore.kernel.org/r/20250203-uvc-roi-v17-2-5900a9fed613@chromium.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
[hverkuil: fix small alignment checkpatch warning]
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 0304daa8471d..bfdba96e938c 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -893,7 +893,9 @@ static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl) return false; break; case V4L2_CTRL_WHICH_DEF_VAL: - /* Default value cannot be changed */ + case V4L2_CTRL_WHICH_MIN_VAL: + case V4L2_CTRL_WHICH_MAX_VAL: + /* Default, minimum or maximum value cannot be changed */ if (ioctl == VIDIOC_S_EXT_CTRLS || ioctl == VIDIOC_TRY_EXT_CTRLS) { c->error_idx = c->count; |