[PATCH 16/22] [media] tvp5150: add querystd

Marco Felsch
2018-06-28T16:20:48Z

From: Philipp Zabel <p.zabel@pengutronix.de>

Add the querystd video_op and make it return V4L2_STD_UNKNOWN while the
TVP5150 is not locked to a signal.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
drivers/media/i2c/tvp5150.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 99d887936ea0..1990aaa17749 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -796,6 +796,15 @@ static v4l2_std_id tvp5150_read_std(struct v4l2_subdev *sd)
}
}

+static int tvp5150_querystd(struct v4l2_subdev *sd, v4l2_std_id *std_id)
+{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+
+ *std_id = decoder->lock ? tvp5150_read_std(sd) : V4L2_STD_UNKNOWN;
+
+ return 0;
+}
+
static const struct v4l2_event tvp5150_ev_fmt = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
@@ -1408,6 +1417,7 @@ static const struct v4l2_subdev_tuner_ops tvp5150_tuner_ops = {

static const struct v4l2_subdev_video_ops tvp5150_video_ops = {
.s_std = tvp5150_s_std,
+ .querystd = tvp5150_querystd,
.s_stream = tvp5150_s_stream,
.s_routing = tvp5150_s_routing,
.g_mbus_config = tvp5150_g_mbus_config,
--
2.17.1