[media] tc358743: put lanes in STOP state before starting streaming

Without calling tc358743_set_csi after stopping streaming (or calling
tc358743_s_dv_timings or tc358743_set_fmt from userspace after stopping
the stream), the i.MX6 MIPI CSI2 input fails waiting for lanes to enter
STOP state when streaming is started again.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/i2c/tc358743.c

@@ -1463,6 +1463,10 @@ static int tc358743_g_mbus_config(struct v4l2_subdev *sd,
 static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
 {
 	enable_stream(sd, enable);
+	if (!enable) {
+		/* Put all lanes in PL-11 state (STOPSTATE) */
+		tc358743_set_csi(sd);
+	}
 
 	return 0;
 }