ad3552r_get_custom_gain
EXPORT_SYMBOL_NS_GPL(ad3552r_get_custom_gain, "IIO_AD3552R");
ret = ad3552r_get_custom_gain(st->dev, child,
err = ad3552r_get_custom_gain(dev, child,
int ad3552r_get_custom_gain(struct device *dev, struct fwnode_handle *child,