The reason we have the code ACPI_COMPANION_SET and dev.of_node set (by
commit 74a53a959028e ("iio:proximity:sx_common: Fix device property
parsing on DT systems") from Stephen is we are getting device propery
in ->get_default_reg(), which is called in sx_common_init_device(),
before devm_iio_device_register().
We have the same code path in other driver, like adc/stm32-adc.c,
where indio_dev->dev.of_node is set manually to be able to set the
resolution based on device tree properties.
Gwendal.
On Fri, Jun 3, 2022 at 9:57 AM Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
>
> On Mon, 30 May 2022 20:43:26 +0300
> Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> > IIO core correctly will take care of firmware node if it's not set in
> > the driver. Drop ACPI and OF specifics from the driver and allow IIO
> > core to handle this.
> >
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Looks fine to me. As such I'll apply it now, but Gwendal, you've
> been active with this driver recently so if you have time to sanity check
> that would be great. Once I've caught up with new stuff I plan to check
> where we are with your various series on this driver.
>
> Thanks,
>
> Jonathan
>
> > ---
> > drivers/iio/proximity/sx_common.c | 3 ---
> > 1 file changed, 3 deletions(-)
> >
> > diff --git a/drivers/iio/proximity/sx_common.c b/drivers/iio/proximity/sx_common.c
> > index 8ad814d96b7e..6bb68c1835da 100644
> > --- a/drivers/iio/proximity/sx_common.c
> > +++ b/drivers/iio/proximity/sx_common.c
> > @@ -5,7 +5,6 @@
> > * Common part of most Semtech SAR sensor.
> > */
> >
> > -#include <linux/acpi.h>
> > #include <linux/bitops.h>
> > #include <linux/byteorder/generic.h>
> > #include <linux/delay.h>
> > @@ -520,8 +519,6 @@ int sx_common_probe(struct i2c_client *client,
> > if (ret)
> > return dev_err_probe(dev, ret, "error reading WHOAMI\n");
> >
> > - ACPI_COMPANION_SET(&indio_dev->dev, ACPI_COMPANION(dev));
> > - indio_dev->dev.of_node = client->dev.of_node;
> > indio_dev->modes = INDIO_DIRECT_MODE;
> >
> > indio_dev->channels = data->chip_info->iio_channels;
>
