From: Bhawanpreet Lakha Date: Fri, 17 Feb 2023 21:08:21 +0000 (-0500) Subject: drm/amd/display: Fix HDCP failing to enable after suspend X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=728cefa53a36ba378ed4a7f31a0c08289687d824;p=linux.git 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: Aurabindo Pillai Acked-by: Qingqing Zhuo Signed-off-by: Bhawanpreet Lakha Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- 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 8e572f07ec476..4abfd2c9679f4 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 @@ -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;