Re: [PATCH] pinctrl: msm: Use dynamic GPIO numbering

[Linus Walleij]

On Fri, Oct 23, 2020 at 4:21 PM Arun KS <arunks.linux@xxxxxxxxx> wrote:

> Im only concerned because, after this change, the use of gpio number
> from user space has become a little difficult.

This makes me a bit puzzled so I need to push back a bit
here.

What is this userspace and what interface is it using?

We recommend using the GPIO character device with
libgpiod for userspace applications:
https://www.kernel.org/doc/html/latest/driver-api/gpio/using-gpio.html

Is there any problem with this?

sysfs is deprecated for years now:
https://www.kernel.org/doc/html/latest/admin-guide/gpio/sysfs.html

Yours,
Linus Walleij