AN30259A_REG_LED_ON
ret = regmap_write(led->chip->regmap, AN30259A_REG_LED_ON, led_on);
ret = regmap_read(led->chip->regmap, AN30259A_REG_LED_ON, &led_on);
ret = regmap_write(led->chip->regmap, AN30259A_REG_LED_ON, led_on);
err = regmap_read(chip->regmap, AN30259A_REG_LED_ON, &led_on);
ret = regmap_read(led->chip->regmap, AN30259A_REG_LED_ON, &led_on);