drm/amd/display: fix underflow in some two display subvp/non-subvp configs

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[Why]
In two display configuration, switching between subvp and non-subvp
 may cause underflow because it moves an existing pipe between
 displays

[How]
Create helper function for applying pipe split flags
Apply pipe split flags prior to deciding on subvp
During subvp check, do not merge pipes, so it can retain previous
 pipe configuration
Add check for prev odm pipe in subvp check
For single display subvp case, use same odm policy for phantom pipes
 as main subvp pipe

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Samson Tam <samson.tam@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Samson Tam 2024-03-15 16:19:21 -04:00 • committed by Alex Deucher

parent 4df96ba667

commit 7ae0caf348

2 changed files with 199 additions and 130 deletions

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259

drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c

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70

drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c

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