drm/amd/display: Block optimize on consecutive FAMS enables

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[WHY]
It is possible to commit state multiple times in rapid succession with
FAMS enabled; if each of these commits were to set optimized_required,
then the user may see latency.

[HOW]
fw_based_mclk_switching is currently not used in dc->clk_mgr; use it
to track whether the current state has FAMS enabled;
if it has, then do not disable FAMS in prepare_bandwidth, and do not set
optimized_required.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Wesley Chalmers 2023-02-28 13:48:00 -05:00 • committed by Alex Deucher

parent e101bf95ea

commit 751e171479

2 changed files with 22 additions and 3 deletions

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3

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

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22

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c

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