| Message ID | 20210701010034.303088-6-liambeguin@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | iio: afe: add temperature rescaling support | expand |
On Wed, 30 Jun 2021 21:00:29 -0400 Liam Beguin <liambeguin@gmail.com> wrote: > 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; As earlier, I'm fairly sure you don't need this (but I could be wrong, so if I am wrong point me at a reference). > + 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:
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: