On Tue, Jun 18, 2024 at 8:58 PM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
>
> Hi Wolfram,
>
> On Tue, Jun 18, 2024 at 12:54 PM Wolfram Sang
> <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote:
> > > I could see it using configfs instead of DT for configuration and iio
> > > for presenting the output but - from what Wolfram said - insisting on
> > > this will simply result in this development being dropped entirely.
> >
> > How do you assign a GPIO via debugfs? I only found the out-of-tree
> > pwm-gpio driver[1] which uses a GPIO number. But those are deprecated
> > these days, or? Any other driver doing this you can point me to?
>
> Do you really need debugfs (or configfs)?
> I guess you can just write GPIO line names or GPIO chip
> labels + offsets to the new_device file, like gpio-aggregator does?
>
> Documentation/admin-guide/gpio/gpio-aggregator.rst
>
IMO that adds a lot of custom string parsing in kernel for no reason.
TBH Today I'd NAK this interface and propose configfs instead as well.
Bart
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
