ad3552r_get_drive_strength
EXPORT_SYMBOL_NS_GPL(ad3552r_get_drive_strength, "IIO_AD3552R");
ret = ad3552r_get_drive_strength(st->dev, &val);
err = ad3552r_get_drive_strength(dev, &val);
int ad3552r_get_drive_strength(struct device *dev, u32 *val);