diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-10-04 09:53:00 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-10-08 08:01:40 -0300 |
| commit | d56ae6fbf33ddeb7ab2ffac896229ca473a7457f (patch) | |
| tree | 961c1e012b785df1e5f178686a107964c658c867 /drivers | |
| parent | 5d1ed98683abafef595b8e3a237f845b82152606 (diff) | |
[media] em28xx: Add VIDIOC_QUERYSTD support
Allow subdevs to return the detected standards
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 61f35c8d66d..62182e31106 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -1156,6 +1156,21 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) return 0; } +static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + int rc; + + rc = check_dev(dev); + if (rc < 0) + return rc; + + v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm); + + return 0; +} + static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm) { struct em28xx_fh *fh = priv; @@ -2354,6 +2369,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_g_std = vidioc_g_std, + .vidioc_querystd = vidioc_querystd, .vidioc_s_std = vidioc_s_std, .vidioc_g_parm = vidioc_g_parm, .vidioc_s_parm = vidioc_s_parm, |