Re: Replacing global GPIO numbers in sysfs with hardware offsets

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Fri, Feb 21, 2025 at 8:56 PM Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> wrote:

> > my only point being that when we add something like this, we
> > put it in debugfs where it belongs, and as illustrated by your
> > example, it is indeed used for debugging/exploring the
> > system:
>
> Why does it belong in debugfs? The whole premise of Bartosz's mail is
> to provide holdouts that haven't yet migrated away from the sysfs global
> number space an alternative _stable_ kernel interface they can rely on.
>
> DebugFS is the opposite of that. It may not even be available in those
> resource-constrained systems that this would be useful for.

This is in my answer to Marek, I misunderstood the wording
"play with GPIO lines" as "explore, develop, bring up" GPIO lines.
Not as "create products using sysfs GPIOs".

See my mail to Marek.

Yours,
Linus Walleij