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From 4ebb45112384673765e3411f40097dcccc4a181f Mon Sep 17 00:00:00 2001
From: "Jerry (Fangzhi) Zuo" <Jerry.Zuo@amd.com>
Date: Wed, 23 Jan 2019 11:41:18 -0500
Subject: [PATCH 1214/2940] drm/amd/display: Apply fake sink back to MST
sequence
[Why]
It fixes the failure to create stream for sink in the scenario
when hotplug SST and MST in sequence, and disconnect MST.
[How]
Add the fake sink back after the majority of MST rework is done.
Change-Id: I0e4be01f78e337ab6f9f1813b091c081ebdd54b3
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 +++-----
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 3 +++
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index f072a996faee..234ecae1ae83 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3061,11 +3061,9 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
drm_connector = &aconnector->base;
if (!aconnector->dc_sink) {
- if (!aconnector->mst_port) {
- sink = create_fake_sink(aconnector);
- if (!sink)
- return stream;
- }
+ sink = create_fake_sink(aconnector);
+ if (!sink)
+ return stream;
} else {
sink = aconnector->dc_sink;
}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 60da1222afaa..73f8e8fa6edb 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -173,6 +173,9 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
aconnector->edid = edid;
}
+ if (aconnector->dc_sink && aconnector->dc_sink->sink_signal == SIGNAL_TYPE_VIRTUAL)
+ dc_sink_release(aconnector->dc_sink);
+
if (!aconnector->dc_sink) {
struct dc_sink *dc_sink;
struct dc_sink_init_data init_params = {
--
2.17.1
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