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[Why]
During driver unload, it is expected that p-state switching is supported.
If it's not supported, PMFW will hang due to a forced p-state switch. Even
if the current timing does not support p-state normally, we still want to
force allow because the worst that can happen is underflow. This will
match Navi10 behaviour.
[How]
- new hubbub func to control the force pstate register
- force allow when releasing display ownership
- registers are inaccessible after due to m_cgs.hwNotAvailable
- explicitly disable force signal during hw_init
- if driver is disabled and re-enabled, register not cleared otherwise
Also, remove DCN3 part of dcn10_init_hw, we will not be going back to it.
Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3e19095534