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iio:ad7476: 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>
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 2ebc39c0bb
commit d88c89db9a
1 changed files with 3 additions and 4 deletions
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7
drivers/iio/adc/ad7476.c
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@ -127,10 +127,9 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
} else {
scale_uv = st->chip_info->int_vref_uv;
}
scale_uv >>= chan->scan_type.realbits;
*val = scale_uv / 1000;
*val2 = (scale_uv % 1000) * 1000;
return IIO_VAL_INT_PLUS_MICRO;
*val = scale_uv / 1000;
*val2 = chan->scan_type.realbits;
return IIO_VAL_FRACTIONAL_LOG2;
}
return -EINVAL;
}