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Commit 4f9be985 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio:ad7746: 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>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent b740f48a

drivers/staging/iio/cdc/ad7746.c

+7 −6
Original line number Diff line number Diff line
@@ -656,20 +656,21 @@ static int ad7746_read_raw(struct iio_dev *indio_dev, 
		switch (chan->type) {

		case IIO_CAPACITANCE:

			/* 8.192pf / 2^24 */

			*val2 = 488;

			*val =  0;

			*val2 = 488;

			ret = IIO_VAL_INT_PLUS_NANO;

			break;

		case IIO_VOLTAGE:

			/* 1170mV / 2^23 */

			*val2 = 139475;

			*val =  0;

			*val = 1170;

			*val2 = 23;

			ret = IIO_VAL_FRACTIONAL_LOG2;

			break;

		default:

			ret = -EINVAL;

			goto out;

			break;

		}



		ret = IIO_VAL_INT_PLUS_NANO;

		break;

	default:

		ret = -EINVAL;