IS31FL319X_SHUTDOWN
ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x20);
ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x00);