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Commit b117f96f authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

iio:mcp4725: Report scale as fractional value 



Move the complexity of calculating the fixed point scale to the core.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 998f129c

drivers/iio/dac/mcp4725.c

+3 −5
Original line number Diff line number Diff line
@@ -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;

}