From 1c928267b187a59ce96972a3102acb9ba72890e1 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 28 May 2019 11:27:34 +0300 Subject: [PATCH] drm/bridge: tc358767: disable only video stream in tc_stream_disable Currently the code writes 0 to DP0CTL in tc_stream_disable(), which disables the whole DP link instead of just the video stream. We always disable the link and the stream together from tc_bridge_disable(), so this doesn't cause any issues. Nevertheless, fix this by only clearing VID_EN in tc_stream_disable to stop the video stream while keeping the link enabled. Signed-off-by: Tomi Valkeinen Reviewed-by: Andrzej Hajda Signed-off-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/20190528082747.3631-12-tomi.valkeinen@ti.com --- drivers/gpu/drm/bridge/tc358767.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 2323a22..f004db0 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1076,10 +1076,13 @@ err: static int tc_stream_disable(struct tc_data *tc) { int ret; + u32 val; dev_dbg(tc->dev, "disable video stream\n"); - tc_write(DP0CTL, 0); + tc_read(DP0CTL, &val); + val &= ~VID_EN; + tc_write(DP0CTL, val); tc_pxl_pll_dis(tc); -- 2.7.4