ufshcd_read_hci_reg
ret = ufshcd_read_hci_reg(hba, &ahit, REG_AUTO_HIBERNATE_IDLE_TIMER);
ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_PID);
ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_MID);