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From 82a02b171093d8e4d724e959953fb0be613e6dec Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Date: Fri, 7 Dec 2018 10:07:09 -0500
Subject: [PATCH 0933/2940] drm/amd/display: Fix duplicating scaling/underscan
connector state
[Why]
These properties aren't being carried over when the atomic state.
This tricks atomic check and commit tail into performing underscan
and scaling operations when they aren't needed.
With the patch that forced scaling/RMX_ASPECT on by default this
results in many unnecessary surface updates and hangs under certain
conditions.
[How]
Duplicate the properties.
Fixes: 91b66c47ba34 ("drm/amd/display: Set RMX_ASPECT as default")
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++
1 file changed, 4 insertions(+)
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 ee4c5ccfdc6a..4e6ebf30b54e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3270,6 +3270,10 @@ amdgpu_dm_connector_atomic_duplicate_state(struct drm_connector *connector)
new_state->freesync_capable = state->freesync_capable;
new_state->abm_level = state->abm_level;
+ new_state->scaling = state->scaling;
+ new_state->underscan_enable = state->underscan_enable;
+ new_state->underscan_hborder = state->underscan_hborder;
+ new_state->underscan_vborder = state->underscan_vborder;
new_state->max_bpc = state->max_bpc;
return &new_state->base;
--
2.17.1
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