last two bits of ADC and limit values are zero and should not be reported (ad7993, ad7997); compare with read_raw() Signed-off-by: Peter Meerwald <pmeerw@xxxxxxxxxx> --- drivers/iio/adc/ad799x.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index 39b4cb4..099b830 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -429,7 +429,8 @@ static int ad799x_write_event_value(struct iio_dev *indio_dev, mutex_lock(&indio_dev->mlock); ret = ad799x_i2c_write16(st, ad799x_threshold_reg(chan, dir, info), - val); + (val & RES_MASK(chan->scan_type.realbits)) + << chan->scan_type.shift); mutex_unlock(&indio_dev->mlock); return ret; @@ -452,7 +453,8 @@ static int ad799x_read_event_value(struct iio_dev *indio_dev, mutex_unlock(&indio_dev->mlock); if (ret < 0) return ret; - *val = valin; + *val = (valin >> chan->scan_type.shift) & + RES_MASK(chan->scan_type.realbits); return IIO_VAL_INT; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
