PCA9685_PRESCALE
ret = regmap_read(pca->regmap, PCA9685_PRESCALE, ¤t_prescale);
ret = regmap_read(pca->regmap, PCA9685_PRESCALE, &prescale);
ret = regmap_read(pca->regmap, PCA9685_PRESCALE, &prescale);
ret = regmap_read(pca->regmap, PCA9685_PRESCALE, ¤t_prescale);
ret = regmap_write(pca->regmap, PCA9685_PRESCALE, wfhw->prescale);
return reg <= REG_OFF_H(15) || reg >= PCA9685_PRESCALE;
return reg < PCA9685_PRESCALE;