FTM_FMS
ftm_read(ftm, FTM_FMS, &flag);
FTM_FIELD_UPDATE(ftm, FTM_FMS, FTM_FMS_WPEN, 1);
case FTM_FMS:
regmap_read(fpc->regmap, FTM_FMS, &val);
regmap_set_bits(fpc->regmap, FTM_FMS, FTM_FMS_WPEN);