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iio:ad7476: Report scale as fractional value
author
Lars-Peter Clausen
<lars@metafoo.de>
Sat, 28 Sep 2013 09:31:00 +0000
(10:31 +0100)
committer
Jonathan Cameron
<jic23@kernel.org>
Tue, 1 Oct 2013 15:19:12 +0000
(16:19 +0100)
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>
drivers/iio/adc/ad7476.c
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diff --git
a/drivers/iio/adc/ad7476.c
b/drivers/iio/adc/ad7476.c
index 8d808b9de90975e8aa68fa7967401a9df49869d0..d141d452c3d1081d4bea64ff01e5b38e855fcd9d 100644
(file)
--- a/
drivers/iio/adc/ad7476.c
+++ b/
drivers/iio/adc/ad7476.c
@@
-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;
}
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