diff options
Diffstat (limited to 'drivers/iio/humidity/si7020.c')
| -rw-r--r-- | drivers/iio/humidity/si7020.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/iio/humidity/si7020.c b/drivers/iio/humidity/si7020.c index fa3b809af..71991b5c0 100644 --- a/drivers/iio/humidity/si7020.c +++ b/drivers/iio/humidity/si7020.c @@ -50,15 +50,19 @@ static int si7020_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - ret = i2c_smbus_read_word_data(*client, - chan->type == IIO_TEMP ? - SI7020CMD_TEMP_HOLD : - SI7020CMD_RH_HOLD); + ret = i2c_smbus_read_word_swapped(*client, + chan->type == IIO_TEMP ? + SI7020CMD_TEMP_HOLD : + SI7020CMD_RH_HOLD); if (ret < 0) return ret; *val = ret >> 2; + /* + * Humidity values can slightly exceed the 0-100%RH + * range and should be corrected by software + */ if (chan->type == IIO_HUMIDITYRELATIVE) - *val &= GENMASK(11, 0); + *val = clamp_val(*val, 786, 13893); return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: if (chan->type == IIO_TEMP) |