drm/amd/display: Optimize clocks on clock change

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[WHY]
Presently, there is no way for clocks to be lowered, only raised.

[HOW]
Compare clock status against previous known clock status, and optimize
if different.
This requires re-ordering the layout of the dc_clocks structure, as the
current ordering allows identical clock states to appear different.

Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Wesley Chalmers 2019-08-30 14:59:00 -04:00 • committed by Alex Deucher

parent 2fef0faa1c

commit 3a4d180d4a

2 changed files with 7 additions and 4 deletions

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3

drivers/gpu/drm/amd/display/dc/core/dc.c

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8

drivers/gpu/drm/amd/display/dc/dc.h

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