Commit 728cefa5 authored by Bhawanpreet Lakha's avatar Bhawanpreet Lakha Committed by Alex Deucher
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drm/amd/display: Fix HDCP failing to enable after suspend 



[Why]
On resume some displays are not ready for HDCP, so they will fail if we
start the hdcp authentintication too soon.

Add a delay so that the displays can be ready before we start.

NOTE: Previoulsy this delay was set to 3 seconds but it was causing
issues with compliance, 2 seconds should enough for compliance and the
s3 resume case.

[How]
Change the Delay to 2 seconds.

Reviewed-by: default avatarAurabindo Pillai <Aurabindo.Pillai@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9da050b0

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c

+1 −1
Original line number Diff line number Diff line
@@ -561,7 +561,7 @@ static void update_config(void *handle, struct cp_psp_stream_config *config) 
	link->dp.mst_enabled = config->mst_enabled;

	link->dp.usb4_enabled = config->usb4_enabled;

	display->adjust.disable = MOD_HDCP_DISPLAY_DISABLE_AUTHENTICATION;

	link->adjust.auth_delay = 0;

	link->adjust.auth_delay = 2;

	link->adjust.hdcp1.disable = 0;

	conn_state = aconnector->base.state;