[media] vpx3220: fix querystd
Return V4L2_STD_UNKNOWN if no signal is detected.
Otherwise AND the standard mask with the detected standards.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/i2c/vpx3220.c b/drivers/media/i2c/vpx3220.c
index 4c57d8a..ece90df 100644
--- a/drivers/media/i2c/vpx3220.c
+++ b/drivers/media/i2c/vpx3220.c
@@ -295,7 +295,7 @@
static int vpx3220_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
{
int res = V4L2_IN_ST_NO_SIGNAL, status;
- v4l2_std_id std = 0;
+ v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;
status = vpx3220_fp_read(sd, 0x0f3);
@@ -312,19 +312,21 @@
case 0x10:
case 0x14:
case 0x18:
- std = V4L2_STD_PAL;
+ std &= V4L2_STD_PAL;
break;
case 0x08:
- std = V4L2_STD_SECAM;
+ std &= V4L2_STD_SECAM;
break;
case 0x04:
case 0x0c:
case 0x1c:
- std = V4L2_STD_NTSC;
+ std &= V4L2_STD_NTSC;
break;
}
+ } else {
+ std = V4L2_STD_UNKNOWN;
}
if (pstd)
*pstd = std;