[PATCH v3 05/10] iio: afe: rescale: add INT_PLUS_{MICRO,NANO} support
From: Liam Beguin <hidden>
Date: 2021-07-01 01:01:06
Also in:
linux-iio, lkml
Subsystem:
iio subsystem and drivers, iio unit converter, the rest · Maintainers:
Jonathan Cameron, Peter Rosin, Linus Torvalds
From: Liam Beguin <redacted>
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 <redacted>
---
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