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path: root/drivers/iio/dac/ad5755.c
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Diffstat (limited to 'drivers/iio/dac/ad5755.c')
-rw-r--r--drivers/iio/dac/ad5755.c26
1 files changed, 7 insertions, 19 deletions
diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c
index 36a4361aece..9a78d5abb2f 100644
--- a/drivers/iio/dac/ad5755.c
+++ b/drivers/iio/dac/ad5755.c
@@ -253,15 +253,6 @@ static inline int ad5755_get_offset(struct ad5755_state *st,
return (min * (1 << chan->scan_type.realbits)) / (max - min);
}
-static inline int ad5755_get_scale(struct ad5755_state *st,
- struct iio_chan_spec const *chan)
-{
- int min, max;
-
- ad5755_get_min_max(st, chan, &min, &max);
- return ((max - min) * 1000000000ULL) >> chan->scan_type.realbits;
-}
-
static int ad5755_chan_reg_info(struct ad5755_state *st,
struct iio_chan_spec const *chan, long info, bool write,
unsigned int *reg, unsigned int *shift, unsigned int *offset)
@@ -303,13 +294,15 @@ static int ad5755_read_raw(struct iio_dev *indio_dev,
{
struct ad5755_state *st = iio_priv(indio_dev);
unsigned int reg, shift, offset;
+ int min, max;
int ret;
switch (info) {
case IIO_CHAN_INFO_SCALE:
- *val = 0;
- *val2 = ad5755_get_scale(st, chan);
- return IIO_VAL_INT_PLUS_NANO;
+ ad5755_get_min_max(st, chan, &min, &max);
+ *val = max - min;
+ *val2 = chan->scan_type.realbits;
+ return IIO_VAL_FRACTIONAL_LOG2;
case IIO_CHAN_INFO_OFFSET:
*val = ad5755_get_offset(st, chan);
return IIO_VAL_INT;
@@ -386,6 +379,7 @@ static const struct iio_chan_spec_ext_info ad5755_ext_info[] = {
.name = "powerdown",
.read = ad5755_read_powerdown,
.write = ad5755_write_powerdown,
+ .shared = IIO_SEPARATE,
},
{ },
};
@@ -595,13 +589,7 @@ static int ad5755_probe(struct spi_device *spi)
if (ret)
return ret;
- ret = iio_device_register(indio_dev);
- if (ret) {
- dev_err(&spi->dev, "Failed to register iio device: %d\n", ret);
- return ret;
- }
-
- return 0;
+ return iio_device_register(indio_dev);
}
static int ad5755_remove(struct spi_device *spi)