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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2015-03-14 18:04:00 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-10 15:29:27 +0200 |
| commit | e183201b9e917daf2530b637b2f34f1d5afb934d (patch) | |
| tree | 1916da510b1ad9517645f0a1bf60d60efa7cba63 /drivers/media | |
| parent | [media] uvcvideo: fix cropcap v4l2-compliance failure (diff) | |
| download | linux-e183201b9e917daf2530b637b2f34f1d5afb934d.tar.xz linux-e183201b9e917daf2530b637b2f34f1d5afb934d.zip | |
[media] uvcvideo: add support for VIDIOC_QUERY_EXT_CTRL
Add support for the new VIDIOC_QUERY_EXT_CTRL ioctl. Since uvc doesn't use
the control framework, support for this ioctl isn't automatic.
This is makes v4l2-compliance happy as well.
[Added blank lines for improved readability]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/usb/uvc/uvc_v4l2.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 927d579e574a..c4b1ac6750d8 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -882,6 +882,35 @@ static int uvc_ioctl_queryctrl(struct file *file, void *fh, return uvc_query_v4l2_ctrl(chain, qc); } +static int uvc_ioctl_query_ext_ctrl(struct file *file, void *fh, + struct v4l2_query_ext_ctrl *qec) +{ + struct uvc_fh *handle = fh; + struct uvc_video_chain *chain = handle->chain; + struct v4l2_queryctrl qc = { qec->id }; + int ret; + + ret = uvc_query_v4l2_ctrl(chain, &qc); + if (ret) + return ret; + + qec->id = qc.id; + qec->type = qc.type; + strlcpy(qec->name, qc.name, sizeof(qec->name)); + qec->minimum = qc.minimum; + qec->maximum = qc.maximum; + qec->step = qc.step; + qec->default_value = qc.default_value; + qec->flags = qc.flags; + qec->elem_size = 4; + qec->elems = 1; + qec->nr_of_dims = 0; + memset(qec->dims, 0, sizeof(qec->dims)); + memset(qec->reserved, 0, sizeof(qec->reserved)); + + return 0; +} + static int uvc_ioctl_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl) { @@ -1457,6 +1486,7 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = { .vidioc_g_input = uvc_ioctl_g_input, .vidioc_s_input = uvc_ioctl_s_input, .vidioc_queryctrl = uvc_ioctl_queryctrl, + .vidioc_query_ext_ctrl = uvc_ioctl_query_ext_ctrl, .vidioc_g_ctrl = uvc_ioctl_g_ctrl, .vidioc_s_ctrl = uvc_ioctl_s_ctrl, .vidioc_g_ext_ctrls = uvc_ioctl_g_ext_ctrls, |