From 49fe8041ce16a6a94922a2621a6405df551a55a5 Mon Sep 17 00:00:00 2001
From: Anthony Koo <Anthony.Koo@amd.com>
Date: Thu, 5 Dec 2019 14:55:24 -0500
Subject: drm/amd/display: Do not handle linkloss for eDP
Git-commit: e97ed49690ea13f73437bc06905215159de6fab6
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

[Why]
eDP is internal link and link loss is unexpected.
It is typically going to be PSR related errors, which is
handled separately.

[How]
Check for eDP and skip check for link loss

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 42aa889fd0f5..38b0f4347383 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -2854,10 +2854,12 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd
 	/* For now we only handle 'Downstream port status' case.
 	 * If we got sink count changed it means
 	 * Downstream port status changed,
-	 * then DM should call DC to do the detection. */
-	if (hpd_rx_irq_check_link_loss_status(
-		link,
-		&hpd_irq_dpcd_data)) {
+	 * then DM should call DC to do the detection.
+	 * NOTE: Do not handle link loss on eDP since it is internal link*/
+	if ((link->connector_signal != SIGNAL_TYPE_EDP) &&
+		hpd_rx_irq_check_link_loss_status(
+			link,
+			&hpd_irq_dpcd_data)) {
 		/* Connectivity log: link loss */
 		CONN_DATA_LINK_LOSS(link,
 					hpd_irq_dpcd_data.raw,
-- 
2.28.0