reg = soc15_get_register_offset(THM_HWID, 0,
                                mmCG_TACH_CTRL_BASE_IDX, mmCG_TACH_CTRL);
                cgs_write_register(hwmgr->device, reg,
-                               (cgs_read_register(hwmgr->device, reg) &
-                               ~CG_TACH_CTRL__EDGE_PER_REV_MASK) |
-                               ((hwmgr->thermal_controller.fanInfo.
-                               ucTachometerPulsesPerRevolution - 1) <<
-                               CG_TACH_CTRL__EDGE_PER_REV__SHIFT));
+                       CGS_REG_SET_FIELD(cgs_read_register(hwmgr->device, reg),
+                               CG_TACH_CTRL, EDGE_PER_REV,
+                               hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution - 1));
        }
 
        reg = soc15_get_register_offset(THM_HWID, 0,
                        mmCG_FDO_CTRL2_BASE_IDX, mmCG_FDO_CTRL2);
        cgs_write_register(hwmgr->device, reg,
-                       (cgs_read_register(hwmgr->device, reg) &
-                       ~CG_FDO_CTRL2__TACH_PWM_RESP_RATE_MASK) |
-                       (0x28 << CG_FDO_CTRL2__TACH_PWM_RESP_RATE__SHIFT));
+               CGS_REG_SET_FIELD(cgs_read_register(hwmgr->device, reg),
+                       CG_FDO_CTRL2, TACH_PWM_RESP_RATE, 0x28));
 
        return 0;
 }