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iio:at91: Report scale as fractional value

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

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2013-09-28 10:31:00 +01:00 committed by Jonathan Cameron
parent 488a21827a
commit c45e561ee8
1 changed files with 3 additions and 3 deletions
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6
drivers/iio/adc/at91_adc.c
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@ -366,9 +366,9 @@ static int at91_adc_read_raw(struct iio_dev *idev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
*val = (st->vref_mv * 1000) >> chan->scan_type.realbits;
*val2 = 0;
return IIO_VAL_INT_PLUS_MICRO;
*val = st->vref_mv;
*val2 = chan->scan_type.realbits;
return IIO_VAL_FRACTIONAL_LOG2;
default:
break;
}