Re: Replacing global GPIO numbers in sysfs with hardware offsets

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi Bartosz,

On Fri, 7 Feb 2025 at 21:18, Bartosz Golaszewski <brgl@xxxxxxxx> wrote:
> On Mon, Feb 3, 2025 at 3:23 PM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> > The other thing to consider is why people are playing with GPIOs
> > directly: do they lack hardware descriptions? Or do they lack proper
> > Linux drivers for their use cases? Something else (people brought up
> > testing random pins, or plugging random things into a Pi)?
>
> I think you're speaking from the position of an experienced kernel
> hacker. The majority of libgpiod users with whom I interact on github
> or via email have never even compiled the kernel. They're working on
> some kind of RPi or BeagleBone project and want to have their python
> script fiddle with the pins. These are hardware people and makers. So
> to answer your question: they play with GPIOs from user-space because
> they don't know better and can't be bothered to learn - developing
> kernel drivers is not on their roadmap.

Ah, the dreaded userspace GPIO drivers...

Please point them to my ELCE2020 presentation "Gadgets and Trinkets,
The Upstream Linux Way"
https://elinux.org/ELC_Europe_2020_Presentations#Day_1_Presentations

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