Re: [PATCH v3 09/15] iio: adc: at91-sama5d2_adc: convert to device properties

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On Mon, 18 Jul 2022 05:21:47 +0000
<Claudiu.Beznea@xxxxxxxxxxxxx> wrote:

> On 15.07.2022 15:28, Nuno Sá wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> > 
> > Make the conversion to firmware agnostic device properties. As part of
> > the conversion the IIO inkern interface 'of_xlate()' is also converted to
> > 'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF
> > dependencies from IIO.
> > 
> > Signed-off-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
> > Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>  
> 
> Reviewed-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
> 

Hi Nuno / Claudiu

Lots of fuzz on this one because of Claudiu's series that I took whilst this was under review
I haven't really checked the result of forcing it in but please take a look at the
testing branch of iio.git for anything silly that happened.

Jonathan

> 
> > ---
> >  drivers/iio/adc/at91-sama5d2_adc.c | 30 +++++++++++++++---------------
> >  1 file changed, 15 insertions(+), 15 deletions(-)
> > 
> > diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
> > index fe3131c9593c..df716584c117 100644
> > --- a/drivers/iio/adc/at91-sama5d2_adc.c
> > +++ b/drivers/iio/adc/at91-sama5d2_adc.c
> > @@ -16,8 +16,9 @@
> >  #include <linux/interrupt.h>
> >  #include <linux/io.h>
> >  #include <linux/module.h>
> > -#include <linux/of_device.h>
> > +#include <linux/mod_devicetable.h>
> >  #include <linux/platform_device.h>
> > +#include <linux/property.h>
> >  #include <linux/sched.h>
> >  #include <linux/wait.h>
> >  #include <linux/iio/iio.h>
> > @@ -650,8 +651,8 @@ at91_adc_chan_get(struct iio_dev *indio_dev, int chan)
> >         return indio_dev->channels + index;
> >  }
> > 
> > -static inline int at91_adc_of_xlate(struct iio_dev *indio_dev,
> > -                                   const struct of_phandle_args *iiospec)
> > +static inline int at91_adc_fwnode_xlate(struct iio_dev *indio_dev,
> > +                                       const struct fwnode_reference_args *iiospec)
> >  {
> >         return at91_adc_chan_xlate(indio_dev, iiospec->args[0]);
> >  }
> > @@ -1876,7 +1877,7 @@ static const struct iio_info at91_adc_info = {
> >         .read_raw = &at91_adc_read_raw,
> >         .write_raw = &at91_adc_write_raw,
> >         .update_scan_mode = &at91_adc_update_scan_mode,
> > -       .of_xlate = &at91_adc_of_xlate,
> > +       .fwnode_xlate = &at91_adc_fwnode_xlate,
> >         .hwfifo_set_watermark = &at91_adc_set_watermark,
> >  };
> > 
> > @@ -1920,6 +1921,7 @@ static int at91_adc_buffer_and_trigger_init(struct device *dev,
> > 
> >  static int at91_adc_probe(struct platform_device *pdev)
> >  {
> > +       struct device *dev = &pdev->dev;
> >         struct iio_dev *indio_dev;
> >         struct at91_adc_state *st;
> >         struct resource *res;
> > @@ -1933,7 +1935,7 @@ static int at91_adc_probe(struct platform_device *pdev)
> >         st = iio_priv(indio_dev);
> >         st->indio_dev = indio_dev;
> > 
> > -       st->soc_info.platform = of_device_get_match_data(&pdev->dev);
> > +       st->soc_info.platform = device_get_match_data(dev);
> > 
> >         indio_dev->name = dev_name(&pdev->dev);
> >         indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
> > @@ -1950,34 +1952,32 @@ static int at91_adc_probe(struct platform_device *pdev)
> > 
> >         st->oversampling_ratio = AT91_OSR_1SAMPLES;
> > 
> > -       ret = of_property_read_u32(pdev->dev.of_node,
> > -                                  "atmel,min-sample-rate-hz",
> > -                                  &st->soc_info.min_sample_rate);
> > +       ret = device_property_read_u32(dev, "atmel,min-sample-rate-hz",
> > +                                      &st->soc_info.min_sample_rate);
> >         if (ret) {
> >                 dev_err(&pdev->dev,
> >                         "invalid or missing value for atmel,min-sample-rate-hz\n");
> >                 return ret;
> >         }
> > 
> > -       ret = of_property_read_u32(pdev->dev.of_node,
> > -                                  "atmel,max-sample-rate-hz",
> > -                                  &st->soc_info.max_sample_rate);
> > +       ret = device_property_read_u32(dev, "atmel,max-sample-rate-hz",
> > +                                      &st->soc_info.max_sample_rate);
> >         if (ret) {
> >                 dev_err(&pdev->dev,
> >                         "invalid or missing value for atmel,max-sample-rate-hz\n");
> >                 return ret;
> >         }
> > 
> > -       ret = of_property_read_u32(pdev->dev.of_node, "atmel,startup-time-ms",
> > -                                  &st->soc_info.startup_time);
> > +       ret = device_property_read_u32(dev, "atmel,startup-time-ms",
> > +                                      &st->soc_info.startup_time);
> >         if (ret) {
> >                 dev_err(&pdev->dev,
> >                         "invalid or missing value for atmel,startup-time-ms\n");
> >                 return ret;
> >         }
> > 
> > -       ret = of_property_read_u32(pdev->dev.of_node,
> > -                                  "atmel,trigger-edge-type", &edge_type);
> > +       ret = device_property_read_u32(dev, "atmel,trigger-edge-type",
> > +                                      &edge_type);
> >         if (ret) {
> >                 dev_dbg(&pdev->dev,
> >                         "atmel,trigger-edge-type not specified, only software trigger available\n");
> > --
> > 2.37.1
> >   
> 





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