Re: [PATCH v7 2/2] iio: adc: ad7173: add AD7173 driver

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On Tue, 5 Dec 2023 19:18:12 +0200
Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote:

> On Tue, Dec 05, 2023 at 06:12:18PM +0200, Ceclan Dumitru wrote:
> > On 12/5/23 17:28, Andy Shevchenko wrote:  
> > >> +               ref_label = ad7173_ref_sel_str[AD7173_SETUP_REF_SEL_INT_REF];
> > >> +
> > >> +               fwnode_property_read_string(child, "adi,reference-select",
> > >> +                                           &ref_label);
> > >> +               ref_sel = match_string(ad7173_ref_sel_str,
> > >> +                                      ARRAY_SIZE(ad7173_ref_sel_str), ref_label);
> > >> +               if (ref_sel < 0) {  
> > > Can we use fwnode_property_match_property_string()?  
> > 
> > fwnode_property_match_string() searches a given string in a device-tree
> > string array and returns the index. I do not think that this function
> > fits here as the DT attribute is a single string.  
> 
> I'm not talking about that. I mentioned different API call.
> 
> /**
>  * fwnode_property_match_property_string - find a property string value in an array and return index
>  * @fwnode: Firmware node to get the property of
>  * @propname: Name of the property holding the string value
>  * @array: String array to search in
>  * @n: Size of the @array
>  *
>  * Find a property string value in a given @array and if it is found return
>  * the index back.
>  *
>  * Return: index, starting from %0, if the string value was found in the @array (success),
>  *         %-ENOENT when the string value was not found in the @array,
>  *         %-EINVAL if given arguments are not valid,
>  *         %-ENODATA if the property does not have a value,
>  *         %-EPROTO or %-EILSEQ if the property is not a string,
>  *         %-ENXIO if no suitable firmware interface is present.
>  */
> 
Which is in the togreg branch of iio.git (was a patch from Andy that I've queued up)

Jonathan






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