On Tue, 2024-06-04 at 09:10 -0500, David Lechner wrote:
> On 6/4/24 6:19 AM, Nuno Sá wrote:
> > On Fri, 2024-05-31 at 16:19 -0500, David Lechner wrote:
> > > This makes use of the new devm_regulator_get_enable_read_voltage()
> > > function to reduce boilerplate code.
> > >
> > > Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx>
> > > ---
> > > drivers/iio/adc/ad7266.c | 37 ++++++++++---------------------------
> > > 1 file changed, 10 insertions(+), 27 deletions(-)
> > >
> > > diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
> > > index 353a97f9c086..026db1bedc0a 100644
> > > --- a/drivers/iio/adc/ad7266.c
> > > +++ b/drivers/iio/adc/ad7266.c
> > > @@ -25,7 +25,6 @@
> > >
> > > struct ad7266_state {
> > > struct spi_device *spi;
> > > - struct regulator *reg;
> > > unsigned long vref_mv;
> > >
> > > struct spi_transfer single_xfer[3];
> > > @@ -377,11 +376,6 @@ static const char * const ad7266_gpio_labels[] = {
> > > "ad0", "ad1", "ad2",
> > > };
> > >
> > > -static void ad7266_reg_disable(void *reg)
> > > -{
> > > - regulator_disable(reg);
> > > -}
> > > -
> > > static int ad7266_probe(struct spi_device *spi)
> > > {
> > > struct ad7266_platform_data *pdata = spi->dev.platform_data;
> > > @@ -396,28 +390,17 @@ static int ad7266_probe(struct spi_device *spi)
> > >
> > > st = iio_priv(indio_dev);
> > >
> > > - st->reg = devm_regulator_get_optional(&spi->dev, "vref");
> > > - if (!IS_ERR(st->reg)) {
> > > - ret = regulator_enable(st->reg);
> > > - if (ret)
> > > - return ret;
> > > -
> > > - ret = devm_add_action_or_reset(&spi->dev,
> > > ad7266_reg_disable, st-
> > > > reg);
> > > - if (ret)
> > > - return ret;
> > > -
> > > - ret = regulator_get_voltage(st->reg);
> > > - if (ret < 0)
> > > - return ret;
> > > -
> > > - st->vref_mv = ret / 1000;
> > > - } else {
> > > - /* Any other error indicates that the regulator does
> > > exist */
> > > - if (PTR_ERR(st->reg) != -ENODEV)
> > > - return PTR_ERR(st->reg);
> > > - /* Use internal reference */
> > > + /*
> > > + * Use external reference from vref if present, otherwise use
> > > 2.5V
> > > + * internal reference.
> > > + */
> >
> > Not sure the comment brings any added value. The code is fairly self
> > explanatory
> > IMO...
>
> Well, you do this every day. :-)
I guess... still not an excuse :)
>
> For someone who never wrote an IIO driver, it could be helpful.
Still dunno but no strong feelings anyways...
- Nuno Sá
