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Commit d56ae6fb authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] em28xx: Add VIDIOC_QUERYSTD support 



Allow subdevs to return the detected standards

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 5d1ed986

drivers/media/video/em28xx/em28xx-video.c

+16 −0
Original line number Diff line number Diff line
@@ -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,