MP8859_STATUS_REG
ret = regmap_read(rdev->regmap, MP8859_STATUS_REG, &cur_val);
ret = regmap_read(rdev->regmap, MP8859_STATUS_REG, &val);
ret = regmap_read(rdev->regmap, MP8859_STATUS_REG, &status);
case MP8859_STATUS_REG:
case MP8859_STATUS_REG: