Allow subdevs to return the detected standards
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
---
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 61f35c8..62182e3 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,
--
1.7.6.4
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