1 files changed, 15 insertions, 59 deletions

diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
index a9e655e69eaa..c6dac4c10c31 100644
--- a/drivers/iio/adc/adi-axi-adc.c
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -142,6 +142,20 @@ static int adi_axi_adc_write_raw(struct iio_dev *indio_dev,
 	return conv->write_raw(conv, chan, val, val2, mask);
 }
 
+static int adi_axi_adc_read_avail(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  const int **vals, int *type, int *length,
+				  long mask)
+{
+	struct adi_axi_adc_state *st = iio_priv(indio_dev);
+	struct adi_axi_adc_conv *conv = &st->client->conv;
+
+	if (!conv->read_avail)
+		return -EOPNOTSUPP;
+
+	return conv->read_avail(conv, chan, vals, type, length, mask);
+}
+
 static int adi_axi_adc_update_scan_mode(struct iio_dev *indio_dev,
 					const unsigned long *scan_mask)
 {
@@ -226,69 +240,11 @@ struct adi_axi_adc_conv *devm_adi_axi_adc_conv_register(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_adi_axi_adc_conv_register);
 
-static ssize_t in_voltage_scale_available_show(struct device *dev,
-					       struct device_attribute *attr,
-					       char *buf)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct adi_axi_adc_state *st = iio_priv(indio_dev);
-	struct adi_axi_adc_conv *conv = &st->client->conv;
-	size_t len = 0;
-	int i;
-
-	for (i = 0; i < conv->chip_info->num_scales; i++) {
-		const unsigned int *s = conv->chip_info->scale_table[i];
-
-		len += scnprintf(buf + len, PAGE_SIZE - len,
-				 "%u.%06u ", s[0], s[1]);
-	}
-	buf[len - 1] = '\n';
-
-	return len;
-}
-
-static IIO_DEVICE_ATTR_RO(in_voltage_scale_available, 0);
-
-enum {
-	ADI_AXI_ATTR_SCALE_AVAIL,
-};
-
-#define ADI_AXI_ATTR(_en_, _file_)			\
-	[ADI_AXI_ATTR_##_en_] = &iio_dev_attr_##_file_.dev_attr.attr
-
-static struct attribute *adi_axi_adc_attributes[] = {
-	ADI_AXI_ATTR(SCALE_AVAIL, in_voltage_scale_available),
-	NULL
-};
-
-static umode_t axi_adc_attr_is_visible(struct kobject *kobj,
-				       struct attribute *attr, int n)
-{
-	struct device *dev = kobj_to_dev(kobj);
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct adi_axi_adc_state *st = iio_priv(indio_dev);
-	struct adi_axi_adc_conv *conv = &st->client->conv;
-
-	switch (n) {
-	case ADI_AXI_ATTR_SCALE_AVAIL:
-		if (!conv->chip_info->num_scales)
-			return 0;
-		return attr->mode;
-	default:
-		return attr->mode;
-	}
-}
-
-static const struct attribute_group adi_axi_adc_attribute_group = {
-	.attrs = adi_axi_adc_attributes,
-	.is_visible = axi_adc_attr_is_visible,
-};
-
 static const struct iio_info adi_axi_adc_info = {
 	.read_raw = &adi_axi_adc_read_raw,
 	.write_raw = &adi_axi_adc_write_raw,
-	.attrs = &adi_axi_adc_attribute_group,
 	.update_scan_mode = &adi_axi_adc_update_scan_mode,
+	.read_avail = &adi_axi_adc_read_avail,
 };
 
 static const struct adi_axi_adc_core_info adi_axi_adc_10_0_a_info = {