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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: 91b66c47ba ("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>
This commit is contained in:
Nicholas Kazlauskas 2018-12-07 10:07:09 -05:00 committed by Alex Deucher
parent 65276f2beb
commit 922454c2e7
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -3240,6 +3240,10 @@ 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;