drm/amd/display: Power down hardware if timer not trigger

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[WHY]
In headless systems, if SetMode/Power down timer
is not called, hardware will not be powered down
causing HW/SW discrepancies. Powering down hardware
on SetPowerState to D3 will ensure SW/HW state is accurate.

[HOW]
If PowerDownThread timer is not trigger but OS call
SetPowerState to D3, power down hardware.

Reviewed-by: Eric Yang <Eric.Yang2@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Paul Hsieh <paul.hsieh@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Paul Hsieh 2022-03-16 06:59:46 +08:00 • committed by Alex Deucher

parent 83bb503275

commit 06bab5897c

1 changed files with 25 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c

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