Re: [PATCH 07/21] gpiolib: provide gpio_device_get_base()

On Tue, Sep 5, 2023 at 8:53 PM Bartosz Golaszewski <[email protected]> wrote:

> From: Bartosz Golaszewski <[email protected]>
>
> Let's start adding getters for the opaque struct gpio_device. Start with
> a function allowing to retrieve the base GPIO number.
>
> Signed-off-by: Bartosz Golaszewski <[email protected]>

I guess you have a solid usecase for drivers needing to do this
crazy thing, because I suppose you feel as much as me that
this should rather be gpiolib-internal and confined to
drivers/gpio/gpiolib.h?

If you add a valid reason for making this globally visible outside
of drivers/[gpio|pinctrl] to the commit message I guess I can live
with it because we need to think of the bigger picture:
Acked-by: Linus Walleij <[email protected]>

It brings to mind the now confusing "base" inside of
struct gpio_chip. We all know it should go away, but since it
is never used during the lifetime of the gpio_chip - or SHOULD
never be used - it should rather be an argument to
[devm_]gpiochip_add_data( .... int base);...

Maybe something we should add to our TODO file.

Yours,
Linus Walleij