From 2b02d746c1818baf741f4eeeff9b97ab4b81e1cf Mon Sep 17 00:00:00 2001
From: Agustin Gutierrez <agustin.gutierrez@amd.com>
Date: Tue, 21 Feb 2023 16:08:15 -0500
Subject: [PATCH] drm/amd/display: Keep PHY active for dp config
Git-commit: 2b02d746c1818baf741f4eeeff9b97ab4b81e1cf
Patch-mainline: v6.4-rc1
References: git-fixes

[Why]
Current hotplug sequence causes temporary hang at the re-entry of the
optimized power state.

[How]
Keep a PHY active when detecting DP signal + DPMS active

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 .../gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c   | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
index 89df7244b272..5cb44f838bde 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
@@ -108,6 +108,11 @@ static int dcn314_get_active_display_cnt_wa(
 				stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
 				stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
 			tmds_present = true;
+
+		/* Checking stream / link detection ensuring that PHY is active*/
+		if (dc_is_dp_signal(stream->signal) && !stream->dpms_off)
+			display_count++;
+
 	}
 
 	for (i = 0; i < dc->link_count; i++) {
-- 
2.43.0