diff mbox series

[v2,17/24] staging:iio:cdc:ad7150: Shift the _raw readings by 4 bits.

Message ID 20210314181511.531414-18-jic23@kernel.org (mailing list archive)
State New, archived
Headers show
Series staging:iio:cdc:ad7150: cleanup / fixup / graduate | expand

Commit Message

Jonathan Cameron March 14, 2021, 6:15 p.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Every other register related to raw value on the datasheet is
described as correpsonding to the 12MSB of the actual
data registers + the bottom 4 bits are 0.  So lets treat this
as what it actually is, which is a 12 bit value.
Note that we will have to be a little careful to compensate for
the offset and scale values.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210207154623.433442-18-jic23@kernel.org
---
 drivers/staging/iio/cdc/ad7150.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index 67af39f80650..1a041396ff9e 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -111,7 +111,7 @@  static int ad7150_read_raw(struct iio_dev *indio_dev,
 						  ad7150_addresses[channel][0]);
 		if (ret < 0)
 			return ret;
-		*val = ret;
+		*val = ret >> 4;
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_AVERAGE_RAW: