Re: [PATCH v2 06/30] gpio: nomadik: extract GPIO platform driver from drivers/pinctrl/nomadik/

Linus Walleij
2024-02-29T09:24:27Z

On Wed, Feb 28, 2024 at 12:28 PM Théo Lebrun <theo.lebrun@bootlin.com> wrote:

> Previously, drivers/pinctrl/nomadik/pinctrl-nomadik.c registered two
> platform drivers: pinctrl & GPIO. Move the GPIO aspect to the
> drivers/gpio/ folder, as would be expected.
>
> Both drivers are intertwined for a reason; pinctrl requires access to
> GPIO registers for pinmuxing, pull-disable, disabling interrupts while
> setting the muxing and wakeup control. Information sharing is done
> through a shared array containing GPIO chips and a few helper
> functions. That shared array is not touched from gpio-nomadik when
> CONFIG_PINCTRL_NOMADIK is not defined.
>
> Make no change to the code that moved into gpio-nomadik; there should be
> no behavior change following. A few functions are shared and header
> comments are added. Checkpatch warnings are addressed. NUM_BANKS is
> renamed to NMK_MAX_BANKS.
>
> It is supported to compile gpio-nomadik without pinctrl-nomadik. The
> opposite is not true.
>
> Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>

Patch applied.

It's good to get this move done, then we can iron out minor issues to
the GPIO part in the GPIO tree as we move along.

I will send the patches to Bartosz with an optional pull request for
this immutable branch.

Yours,
Linus Walleij