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Subject[PATCH v3 05/10] iio: afe: rescale: add INT_PLUS_{MICRO,NANO} support
Date
From: Liam Beguin <lvb@xiphos.com>

Add IIO_VAL_INT_PLUS_{NANO,MICRO} scaling support.
Scale the integer part and the decimal parts individually and keep the
original scaling type.

Signed-off-by: Liam Beguin <lvb@xiphos.com>
---
drivers/iio/afe/iio-rescale.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c
index 98bcb5d418d6..8f79c582519c 100644
--- a/drivers/iio/afe/iio-rescale.c
+++ b/drivers/iio/afe/iio-rescale.c
@@ -87,7 +87,16 @@ static int rescale_read_raw(struct iio_dev *indio_dev,
do_div(tmp, 1000000000LL);
*val = tmp;
return ret;
+ case IIO_VAL_INT_PLUS_NANO:
+ fallthrough;
+ case IIO_VAL_INT_PLUS_MICRO:
+ tmp = (s64)*val * rescale->numerator;
+ *val = div_s64(tmp, rescale->denominator);
+ tmp = (s64)*val2 * rescale->numerator;
+ *val2 = div_s64(tmp, rescale->denominator);
+ return ret;
default:
+ dev_err(&indio_dev->dev, "unsupported type %d\n", ret);
return -EOPNOTSUPP;
}
default:
--
2.30.1.489.g328c10930387
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