From eda3b43795e4ee558921218267d4647c14258d8a Mon Sep 17 00:00:00 2001
From: Evgenii Krasnikov <Evgenii.Krasnikov@amd.com>
Date: Tue, 5 Apr 2022 10:59:27 -0400
Subject: drm/amd/display: Reset cached PSR parameters after hibernate
Git-commit: d2069326d26c7de78e77a060fb6e6d0d21c35dbd
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

[WHY]
After hibernate system might be using old invalid psr_power_opt and
psr_allow_active that never get reset

[HOW]
Reset cached Panel Self Refresh parameters when PSR is first configured
for eDP in dc_link_setup_psr.

Reviewed-by: Harry Vanzylldejong <harry.vanzylldejong@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Evgenii Krasnikov <Evgenii.Krasnikov@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 3d13ee32a3db..1eddf2785153 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -3317,9 +3317,14 @@ bool dc_link_setup_psr(struct dc_link *link,
 	 */
 	psr_context->frame_delay = 0;
 
-	if (psr)
+	if (psr) {
 		link->psr_settings.psr_feature_enabled = psr->funcs->psr_copy_settings(psr,
 			link, psr_context, panel_inst);
+		if (link->psr_settings.psr_feature_enabled) {
+			link->psr_settings.psr_power_opt = 0;
+			link->psr_settings.psr_allow_active = 0;
+		}
+	}
 	else
 		link->psr_settings.psr_feature_enabled = dmcu->funcs->setup_psr(dmcu, link, psr_context);
 
-- 
2.38.1