Messages in this thread Patch in this message | | | Date | Thu, 25 Oct 2018 19:30:04 -0300 | From | Renato Lui Geh <> | Subject | [PATCH v2 1/2] staging: iio: ad7780: update voltage on read |
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The ad7780 driver previously did not read the correct device output, as it read an outdated value set at initialization. It now updates its voltage on read.
Signed-off-by: Renato Lui Geh <renatogeh@gmail.com> --- drivers/staging/iio/adc/ad7780.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c index b67412db0318..27972563bb6a 100644 --- a/drivers/staging/iio/adc/ad7780.c +++ b/drivers/staging/iio/adc/ad7780.c @@ -87,11 +87,15 @@ static int ad7780_read_raw(struct iio_dev *indio_dev, long m) { struct ad7780_state *st = iio_priv(indio_dev); + int voltage_uv = 0; switch (m) { case IIO_CHAN_INFO_RAW: return ad_sigma_delta_single_conversion(indio_dev, chan, val); case IIO_CHAN_INFO_SCALE: + voltage_uv = regulator_get_voltage(st->reg); + if (voltage_uv) + st->int_vref_mv = voltage_uv/1000; *val = st->int_vref_mv * st->gain; *val2 = chan->scan_type.realbits - 1; return IIO_VAL_FRACTIONAL_LOG2; -- 2.19.1
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