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drm/amd/display: Fix HDCP failing to enable after suspend

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[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: Aurabindo Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha 2023-02-17 16:08:21 -05:00 committed by Alex Deucher
parent 9da050b0d9
commit 728cefa53a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c
View File

@ -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;