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From cd43ff2a1e13dbf27001284939bbe66f75cd5c73 Mon Sep 17 00:00:00 2001
From: Sung Lee <sung.lee@amd.com>
Date: Wed, 16 Oct 2019 10:24:01 -0400
Subject: [PATCH 4349/4736] drm/amd/display: Use SIGNAL_TYPE_NONE in
disable_output unless eDP
[WHY]
Currently made a change where disable_output is called using signal_type.
Using actual signal_type when calilng disable_output in power_down_encoders
would make DP to HDMI dongle not light up on boot. As it would have signal_type
SIGNAL_TYPE_DISPLAY_PORT.
[HOW]
Set signal_type to SIGNAL_TYPE_NONE unless it is eDP.
Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
---
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 0d171874ef4e..050634926263 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1435,6 +1435,9 @@ static void power_down_encoders(struct dc *dc)
if (!dc->links[i]->wa_flags.dp_keep_receiver_powered)
dp_receiver_power_ctrl(dc->links[i], false);
+ if (signal != SIGNAL_TYPE_EDP)
+ signal = SIGNAL_TYPE_NONE;
+
dc->links[i]->link_enc->funcs->disable_output(
dc->links[i]->link_enc, signal);
}
--
2.17.1
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