On Thu, 12 Aug 2021 13:48:43 +0800
Hui Liu <hui.liu@xxxxxxxxxxxx> wrote:
> Add support IIO_CHAN_INFO_RAW case.
Why?
We almost never support both RAW and PROCESSED as userspace should be
fine to use either. There are a few reasons we've let drivers do
this but I would like know why it matters to you and it definitely
needs to be in the patch description.
>
> Signed-off-by: Hui Liu <hui.liu@xxxxxxxxxxxx>
> ---
> drivers/iio/adc/mt6577_auxadc.c | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/adc/mt6577_auxadc.c b/drivers/iio/adc/mt6577_auxadc.c
> index 79c1dd68b909..e995d43287b2 100644
> --- a/drivers/iio/adc/mt6577_auxadc.c
> +++ b/drivers/iio/adc/mt6577_auxadc.c
> @@ -60,7 +60,8 @@ static const struct mtk_auxadc_compatible mt6765_compat = {
> .type = IIO_VOLTAGE, \
> .indexed = 1, \
> .channel = (idx), \
> - .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
> + BIT(IIO_CHAN_INFO_PROCESSED), \
> }
>
> static const struct iio_chan_spec mt6577_auxadc_iio_channels[] = {
> @@ -181,6 +182,19 @@ static int mt6577_auxadc_read_raw(struct iio_dev *indio_dev,
> struct mt6577_auxadc_device *adc_dev = iio_priv(indio_dev);
>
> switch (info) {
> + case IIO_CHAN_INFO_RAW:
> + *val = mt6577_auxadc_read(indio_dev, chan);
> + if (*val < 0) {
> + dev_notice(indio_dev->dev.parent,
> + "failed to sample data on channel[%d]\n",
> + chan->channel);
> + return *val;
> + }
> + if (adc_dev->dev_comp->sample_data_cali)
> + *val = mt_auxadc_get_cali_data(*val, true);
> +
> + return IIO_VAL_INT;
> +
> case IIO_CHAN_INFO_PROCESSED:
> *val = mt6577_auxadc_read(indio_dev, chan);
> if (*val < 0) {
