drm/amdgpu: put the SMC into the proper state on reset/unload
authorAlex Deucher <alexander.deucher@amd.com>
Thu, 25 Jul 2019 16:44:59 +0000 (11:44 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 31 Jul 2019 04:24:44 +0000 (23:24 -0500)
commita3a09142f43c456fff7ddbc0ac867af8979a368c
treeb1d57ef098667061c24fb2c26e0bf667a3d5df9a
parent1c074a63834e7414031f33c23efd87bbb8c25cea
drm/amdgpu: put the SMC into the proper state on reset/unload

When doing a GPU reset or unloading the driver, we need to
put the SMU into the apprpriate state for the re-init after
the reset or unload to reliably work.

I don't think this is necessary for BACO because the SMU actually
controls the BACO state to it needs to be active.

For suspend (S3), the asic is put into D3 so the SMU would be
powered down so I don't think we need to put the SMU into
any special state.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu.h
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c