Re: [RFC PATCH 0/6] Add Pinctrl driver for Starfive JH8100 SoC

[Linus Walleij <linus.walleij@linaro.org>]

Hi Alex,

thanks for your patch!

On Thu, Dec 21, 2023 at 9:36 AM Alex Soo <yuklin.soo@starfivetech.com> wrote:

>   pinctrl: starfive: jh8100: add pinctrl driver for sys_east domain
>   pinctrl: starfive: jh8100: add pinctrl driver for sys_west domain
>   pinctrl: starfive: jh8100: add pinctrl driver for sys_gmac domain
>   pinctrl: starfive: jh8100: add pinctrl driver for AON domain

To my eye it looks like a lot of code is duplicated between the four subdrivers.

The pattern from other pin controllers is to create a file with all the common
code and then subdrivers for each sub-pincontroller that have their own
probe but calls into the library.

C.f.
drivers/pinctrl/qcom/pinctrl-apq8064.c:

static int apq8064_pinctrl_probe(struct platform_device *pdev)
{
        return msm_pinctrl_probe(pdev, &apq8064_pinctrl);
}

And that function is in drivers/pinctrl/qcom/pinctrl-msm.c
and you find great inspiration in the qcom Kconfig and Makefile
and drivers/pinctrl/qcom/pinctrl-msm.h
that you can copypaste to pull this off.

Maybe you should start with a patch that extract the common stuff
from the existing jh7100/jh7110 drivers and then reuse that for
jh8100?

Yours,
Linus Walleij