From: Liam Beguin <lvb@xxxxxxxxxx>
Some ADCs use IIO_VAL_INT_PLUS_{NANO,MICRO} scale types.
Add support for these to allow using the iio-rescaler with them.
Signed-off-by: Liam Beguin <lvb@xxxxxxxxxx>
---
drivers/iio/afe/iio-rescale.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c
index 4c3cfd4d5181..a2b220b5ba86 100644
--- a/drivers/iio/afe/iio-rescale.c
+++ b/drivers/iio/afe/iio-rescale.c
@@ -92,7 +92,22 @@ static int rescale_read_raw(struct iio_dev *indio_dev,
do_div(tmp, 1000000000LL);
*val = tmp;
return ret;
+ case IIO_VAL_INT_PLUS_NANO:
+ tmp = ((s64)*val * 1000000000LL + *val2) * rescale->numerator;
+ do_div(tmp, rescale->denominator);
+
+ *val = div_s64(tmp, 1000000000LL);
+ *val2 = tmp - *val * 1000000000LL;
+ return ret;
+ case IIO_VAL_INT_PLUS_MICRO:
+ tmp = ((s64)*val * 1000000LL + *val2) * rescale->numerator;
+ do_div(tmp, rescale->denominator);
+
+ *val = div_s64(tmp, 1000000LL);
+ *val2 = tmp - *val * 1000000LL;
+ return ret;
default:
+ dev_err(&indio_dev->dev, "unsupported type %d\n", ret);
return -EOPNOTSUPP;
}
default:
--
2.30.1.489.g328c10930387
