diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-09-28 11:31:00 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-10-01 17:19:11 +0200 |
| commit | b117f96f49c92751574042136b99b8ba7eb8977f (patch) | |
| tree | 198fa1cf16face08d3f8d49e0329a272778d1328 /drivers/iio/dac/mcp4725.c | |
| parent | iio:max517: Report scale as fractional value (diff) | |
| download | linux-b117f96f49c92751574042136b99b8ba7eb8977f.tar.xz linux-b117f96f49c92751574042136b99b8ba7eb8977f.zip | |
iio:mcp4725: Report scale as fractional value
Move the complexity of calculating the fixed point scale to the core.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/dac/mcp4725.c')
| -rw-r--r-- | drivers/iio/dac/mcp4725.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c index 7a42d85269bb..d982752dd9c4 100644 --- a/drivers/iio/dac/mcp4725.c +++ b/drivers/iio/dac/mcp4725.c @@ -239,17 +239,15 @@ static int mcp4725_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { struct mcp4725_data *data = iio_priv(indio_dev); - unsigned long scale_uv; switch (mask) { case IIO_CHAN_INFO_RAW: *val = data->dac_value; return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - scale_uv = (data->vref_mv * 1000) >> 12; - *val = scale_uv / 1000000; - *val2 = scale_uv % 1000000; - return IIO_VAL_INT_PLUS_MICRO; + *val = data->vref_mv; + *val2 = 12; + return IIO_VAL_FRACTIONAL_LOG2; } return -EINVAL; } |