From: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx> [ Upstream commit 728cefa53a36ba378ed4a7f31a0c08289687d824 ] [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@xxxxxxx> Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx> Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx> Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c index a7fd98f57f94c..dc62375a8e2c4 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c @@ -495,7 +495,7 @@ 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; -- 2.39.2
