diff --git a/drivers/staging/iio/dac/ad5446.c b/drivers/staging/iio/dac/ad5446.c
index 20c414c8dd66..731cd05456ab 100644
--- a/drivers/staging/iio/dac/ad5446.c
+++ b/drivers/staging/iio/dac/ad5446.c
@@ -24,35 +24,16 @@
 
 #include "ad5446.h"
 
-static int ad5446_store_sample(struct ad5446_state *st, unsigned val)
+static int ad5446_write(struct ad5446_state *st, unsigned val)
 {
 	__be16 data = cpu_to_be16(val);
 	return spi_write(st->spi, &data, sizeof(data));
 }
 
-static int ad5660_store_sample(struct ad5446_state *st, unsigned val)
+static int ad5660_write(struct ad5446_state *st, unsigned val)
 {
 	uint8_t data[3];
 
-	val |= AD5660_LOAD;
-	data[0] = (val >> 16) & 0xFF;
-	data[1] = (val >> 8) & 0xFF;
-	data[2] = val & 0xFF;
-
-	return spi_write(st->spi, data, sizeof(data));
-}
-
-static int ad5620_store_pwr_down(struct ad5446_state *st, unsigned mode)
-{
-	__be16 data = cpu_to_be16(mode << 14);
-	return spi_write(st->spi, &data, sizeof(data));
-}
-
-static int ad5660_store_pwr_down(struct ad5446_state *st, unsigned mode)
-{
-	unsigned val = mode << 16;
-	uint8_t data[3];
-
 	data[0] = (val >> 16) & 0xFF;
 	data[1] = (val >> 8) & 0xFF;
 	data[2] = val & 0xFF;
@@ -114,6 +95,8 @@ static ssize_t ad5446_write_dac_powerdown(struct iio_dev *indio_dev,
 					    const char *buf, size_t len)
 {
 	struct ad5446_state *st = iio_priv(indio_dev);
+	unsigned int shift;
+	unsigned int val;
 	bool powerdown;
 	int ret;
 
@@ -124,11 +107,14 @@ static ssize_t ad5446_write_dac_powerdown(struct iio_dev *indio_dev,
 	mutex_lock(&indio_dev->mlock);
 	st->pwr_down = powerdown;
 
-	if (st->pwr_down)
-		ret = st->chip_info->store_pwr_down(st, st->pwr_down_mode);
-	else
-		ret = st->chip_info->store_sample(st, st->cached_val);
+	if (st->pwr_down) {
+		shift = chan->scan_type.realbits + chan->scan_type.shift;
+		val = st->pwr_down_mode << shift;
+	} else {
+		val = st->cached_val;
+	}
 
+	ret = st->chip_info->write(st, val);
 	mutex_unlock(&indio_dev->mlock);
 
 	return ret ? ret : len;
@@ -171,74 +157,65 @@ static const struct iio_chan_spec_ext_info ad5064_ext_info_powerdown[] = {
 static const struct ad5446_chip_info ad5446_chip_info_tbl[] = {
 	[ID_AD5444] = {
 		.channel = AD5446_CHANNEL(12, 16, 2),
-		.store_sample = ad5446_store_sample,
+		.write = ad5446_write,
 	},
 	[ID_AD5446] = {
 		.channel = AD5446_CHANNEL(14, 16, 0),
-		.store_sample = ad5446_store_sample,
+		.write = ad5446_write,
 	},
 	[ID_AD5541A] = {
 		.channel = AD5446_CHANNEL(16, 16, 0),
-		.store_sample = ad5446_store_sample,
+		.write = ad5446_write,
 	},
 	[ID_AD5512A] = {
 		.channel = AD5446_CHANNEL(12, 16, 4),
-		.store_sample = ad5446_store_sample,
+		.write = ad5446_write,
 	},
 	[ID_AD5553] = {
 		.channel = AD5446_CHANNEL(14, 16, 0),
-		.store_sample = ad5446_store_sample,
+		.write = ad5446_write,
 	},
 	[ID_AD5601] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(8, 16, 6),
-		.store_sample = ad5446_store_sample,
-		.store_pwr_down = ad5620_store_pwr_down,
+		.write = ad5446_write,
 	},
 	[ID_AD5611] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(10, 16, 4),
-		.store_sample = ad5446_store_sample,
-		.store_pwr_down = ad5620_store_pwr_down,
+		.write = ad5446_write,
 	},
 	[ID_AD5621] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
-		.store_sample = ad5446_store_sample,
-		.store_pwr_down = ad5620_store_pwr_down,
+		.write = ad5446_write,
 	},
 	[ID_AD5620_2500] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
 		.int_vref_mv = 2500,
-		.store_sample = ad5446_store_sample,
-		.store_pwr_down = ad5620_store_pwr_down,
+		.write = ad5446_write,
 	},
 	[ID_AD5620_1250] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
 		.int_vref_mv = 1250,
-		.store_sample = ad5446_store_sample,
-		.store_pwr_down = ad5620_store_pwr_down,
+		.write = ad5446_write,
 	},
 	[ID_AD5640_2500] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
 		.int_vref_mv = 2500,
-		.store_sample = ad5446_store_sample,
-		.store_pwr_down = ad5620_store_pwr_down,
+		.write = ad5446_write,
 	},
 	[ID_AD5640_1250] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
 		.int_vref_mv = 1250,
-		.store_sample = ad5446_store_sample,
-		.store_pwr_down = ad5620_store_pwr_down,
+		.write = ad5446_write,
 	},
 	[ID_AD5660_2500] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
 		.int_vref_mv = 2500,
-		.store_sample = ad5660_store_sample,
-		.store_pwr_down = ad5660_store_pwr_down,
+		.write = ad5660_write,
 	},
 	[ID_AD5660_1250] = {
 		.channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
 		.int_vref_mv = 1250,
-		.store_sample = ad5660_store_sample,
-		.store_pwr_down = ad5660_store_pwr_down,
+		.write = ad5660_write,
 	},
 };
 
@@ -280,7 +257,7 @@ static int ad5446_write_raw(struct iio_dev *indio_dev,
 		mutex_lock(&indio_dev->mlock);
 		st->cached_val = val;
 		if (!st->pwr_down)
-			ret = st->chip_info->store_sample(st, val);
+			ret = st->chip_info->write(st, val);
 		mutex_unlock(&indio_dev->mlock);
 		break;
 	default:
diff --git a/drivers/staging/iio/dac/ad5446.h b/drivers/staging/iio/dac/ad5446.h
index 06518166bb87..1a0fb4aebe8a 100644
--- a/drivers/staging/iio/dac/ad5446.h
+++ b/drivers/staging/iio/dac/ad5446.h
@@ -51,15 +51,13 @@ struct ad5446_state {
  * struct ad5446_chip_info - chip specific information
  * @channel:		channel spec for the DAC
  * @int_vref_mv:	AD5620/40/60: the internal reference voltage
- * @store_sample:	chip specific helper function to store the datum
- * @store_sample:	chip specific helper function to store the powerpown cmd
+ * @write:		chip specific helper function to write to the register
  */
 
 struct ad5446_chip_info {
 	struct iio_chan_spec	channel;
 	u16			int_vref_mv;
-	int (*store_sample)	(struct ad5446_state *st, unsigned val);
-	int (*store_pwr_down)	(struct ad5446_state *st, unsigned mode);
+	int			(*write)(struct ad5446_state *st, unsigned val);
 };
 
 /**