[PATCH 19/33] drm/amd/display: Keep PHY active for dp config

[Qingqing Zhuo]

From: Agustin Gutierrez <agustin.gutier...@amd.com>

[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.kazlaus...@amd.com>
Acked-by: Qingqing Zhuo <qingqing.z...@amd.com>
Signed-off-by: Agustin Gutierrez <agustin.gutier...@amd.com>
---
 .../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++) {
-- 
2.34.1