diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2013-05-29 10:19:00 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-06-17 09:44:08 -0300 |
| commit | 55852cbbae45e3bbb5ef7a5f1213ed34ff6209f9 (patch) | |
| tree | b3fa08a851e6a093b0a9fa8983af5ca60f88e235 /drivers/media/i2c/tvp514x.c | |
| parent | ec276a5a26200b342c11739b805b637961f660a7 (diff) | |
| download | op-kernel-dev-55852cbbae45e3bbb5ef7a5f1213ed34ff6209f9.zip op-kernel-dev-55852cbbae45e3bbb5ef7a5f1213ed34ff6209f9.tar.gz | |
[media] tvp514x: 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>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/i2c/tvp514x.c')
| -rw-r--r-- | drivers/media/i2c/tvp514x.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c index b5c17eb..b8061b5 100644 --- a/drivers/media/i2c/tvp514x.c +++ b/drivers/media/i2c/tvp514x.c @@ -542,8 +542,6 @@ static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id) if (std_id == NULL) return -EINVAL; - *std_id = V4L2_STD_UNKNOWN; - /* To query the standard the TVP514x must power on the ADCs. */ if (!decoder->streaming) { tvp514x_s_stream(sd, 1); @@ -552,8 +550,10 @@ static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id) /* query the current standard */ current_std = tvp514x_query_current_std(sd); - if (current_std == STD_INVALID) + if (current_std == STD_INVALID) { + *std_id = V4L2_STD_UNKNOWN; return 0; + } input_sel = decoder->input; @@ -594,10 +594,12 @@ static int tvp514x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id) } /* check whether signal is locked */ sync_lock_status = tvp514x_read_reg(sd, REG_STATUS1); - if (lock_mask != (sync_lock_status & lock_mask)) + if (lock_mask != (sync_lock_status & lock_mask)) { + *std_id = V4L2_STD_UNKNOWN; return 0; /* No input detected */ + } - *std_id = decoder->std_list[current_std].standard.id; + *std_id &= decoder->std_list[current_std].standard.id; v4l2_dbg(1, debug, sd, "Current STD: %s\n", decoder->std_list[current_std].standard.name); |
