amdgpu_pm_load_smu_firmware
r = amdgpu_pm_load_smu_firmware(adev, &smu_version);
r = amdgpu_pm_load_smu_firmware(adev, NULL);
r = amdgpu_pm_load_smu_firmware(adev, NULL);
r = amdgpu_pm_load_smu_firmware(adev, NULL);
else if (!strcmp(chip_name, "raven") && (amdgpu_pm_load_smu_firmware(adev, &smu_version) == 0) &&
int amdgpu_pm_load_smu_firmware(struct amdgpu_device *adev, uint32_t *smu_version);