From b117f96f49c92751574042136b99b8ba7eb8977f Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Sat, 28 Sep 2013 10:31:00 +0100 Subject: [PATCH] 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 Cc: Peter Meerwald Signed-off-by: Jonathan Cameron --- drivers/iio/dac/mcp4725.c | 8 +++----- 1 file 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; }