amd_pmf_reg_read
value = amd_pmf_reg_read(dev, AMD_PMF_REGISTER_RESPONSE);
value = amd_pmf_reg_read(dev, AMD_PMF_REGISTER_ARGUMENT);
value = amd_pmf_reg_read(dev, AMD_PMF_REGISTER_MESSAGE);
*data = amd_pmf_reg_read(dev, AMD_PMF_REGISTER_ARGUMENT);