diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index b631316bfe5b..84a1b4bc9bb4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -755,6 +755,55 @@ int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, } /** + * amdgpu_acpi_smart_shift_update - update dGPU device state to SBIOS + * + * @dev: drm_device pointer + * @ss_state: current smart shift event + * + * returns 0 on success, + * otherwise return error number. + */ +int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state) +{ + struct amdgpu_device *adev = drm_to_adev(dev); + int r; + + if (!amdgpu_device_supports_smart_shift(dev)) + return 0; + + switch (ss_state) { + /* SBIOS trigger “stop”, “enable” and “start” at D0, Driver Operational. + * SBIOS trigger “stop” at D3, Driver Not Operational. + * SBIOS trigger “stop” and “disable” at D0, Driver NOT operational. + */ + case AMDGPU_SS_DRV_LOAD: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_OPR); + break; + case AMDGPU_SS_DEV_D0: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_OPR); + break; + case AMDGPU_SS_DEV_D3: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D3_HOT, + AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); + break; + case AMDGPU_SS_DRV_UNLOAD: + r = amdgpu_acpi_power_shift_control(adev, + AMDGPU_ATCS_PSC_DEV_STATE_D0, + AMDGPU_ATCS_PSC_DRV_STATE_NOT_OPR); + break; + default: + return -EINVAL; + } + + return r; +} + +/** * amdgpu_acpi_event - handle notify events * * @nb: notifier block |