drm/amd/display: Refactor HDCP encryption status update

[Why]
The old way was to poll PSP and update the properties. But due to a
limitation in the PSP interface this doesn't work for MST.

[How]
According to PSP if set_encryption return success, the link is encrypted
and the only way it will not be is if we get a link loss(which we handle
already).

So this method should be good enough to report HDCP status.

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 1 insertions, 2 deletions

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 244a8e80334a..f6864a51891a 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
@@ -85,6 +85,7 @@ static void process_output(struct hdcp_workqueue *hdcp_work)
 		schedule_delayed_work(&hdcp_work->watchdog_timer_dwork,
 				      msecs_to_jiffies(output.watchdog_timer_delay));
 
+	schedule_delayed_work(&hdcp_work->property_validate_dwork, msecs_to_jiffies(0));
 }
 
 void hdcp_update_display(struct hdcp_workqueue *hdcp_work,
@@ -234,8 +235,6 @@ static void event_property_validate(struct work_struct *work)
 		schedule_work(&hdcp_work->property_update_work);
 	}
 
-	schedule_delayed_work(&hdcp_work->property_validate_dwork, msecs_to_jiffies(DRM_HDCP_CHECK_PERIOD_MS));
-
 	mutex_unlock(&hdcp_work->mutex);
 }