Commit 949658cb authored by Shixiong Ou's avatar Shixiong Ou Committed by Alex Deucher
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drm/radeon: Delay Connector detecting when HPD singals is unstable 



In some causes, HPD signals will jitter when plugging in
or unplugging HDMI.

Rescheduling the hotplug work for a second when EDID may still be
readable but HDP is disconnected, and fixes this issue.

Signed-off-by: default avatarShixiong Ou <oushixiong@kylinos.cn>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d2d3a440

drivers/gpu/drm/radeon/radeon_connectors.c

+10 −0
Original line number Diff line number Diff line
@@ -1267,6 +1267,16 @@ radeon_dvi_detect(struct drm_connector *connector, bool force) 
			goto exit;

		}

	}



	if (dret && radeon_connector->hpd.hpd != RADEON_HPD_NONE &&

	    !radeon_hpd_sense(rdev, radeon_connector->hpd.hpd) &&

	    connector->connector_type == DRM_MODE_CONNECTOR_HDMIA) {

		DRM_DEBUG_KMS("EDID is readable when HPD disconnected\n");

		schedule_delayed_work(&rdev->hotplug_work, msecs_to_jiffies(1000));

		ret = connector_status_disconnected;

		goto exit;

	}



	if (dret) {

		radeon_connector->detected_by_load = false;

		radeon_connector_free_edid(connector);