From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Mon, 13 Feb 2017 09:24:36 +0000 (-0200)
Subject: [media] tc358743: put lanes in STOP state before starting streaming
X-Git-Tag: v4.12-rc1~85^2~279
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fbd4676cc2930ba40d507eaadf3ff06d3eba7e6a;p=karo-tx-linux.git

[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>
---

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 140c804a6dc3..bf9d925164a3 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/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;
 }