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drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform 

By setting mp1_state as PP_MP1_STATE_UNLOAD, MP1 will do some proper cleanups and
put itself into a state ready for PNP. That can workaround some random resuming
failure observed on BOCO capable platforms.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan 2021-12-17 19:05:06 +08:00 committed by Alex Deucher
parent daf8de0874
commit 7be3be2b02
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@ -2238,12 +2238,27 @@ static int amdgpu_pmops_runtime_suspend(struct device *dev)
if (amdgpu_device_supports_px(drm_dev))
drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
/*
* By setting mp1_state as PP_MP1_STATE_UNLOAD, MP1 will do some
* proper cleanups and put itself into a state ready for PNP. That
* can address some random resuming failure observed on BOCO capable
* platforms.
* TODO: this may be also needed for PX capable platform.
*/
if (amdgpu_device_supports_boco(drm_dev))
adev->mp1_state = PP_MP1_STATE_UNLOAD;
ret = amdgpu_device_suspend(drm_dev, false);
if (ret) {
adev->in_runpm = false;
if (amdgpu_device_supports_boco(drm_dev))
adev->mp1_state = PP_MP1_STATE_NONE;
return ret;
}
if (amdgpu_device_supports_boco(drm_dev))
adev->mp1_state = PP_MP1_STATE_NONE;
if (amdgpu_device_supports_px(drm_dev)) {
/* Only need to handle PCI state in the driver for ATPX
* PCI core handles it for _PR3.