linux-kernel - Re: [PATCH v6 1/1] gpio: mpfs: add polarfire soc gpio support

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Date:   Thu, 1 Sep 2022 00:04:40 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     lewis.hanly@...rochip.com,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Marc Zyngier <maz@...nel.org>, conor.dooley@...rochip.com,
        daire.mcnamara@...rochip.com
Subject: Re: [PATCH v6 1/1] gpio: mpfs: add polarfire soc gpio support

On Mon, Aug 22, 2022 at 2:30 PM Linus Walleij <linus.walleij@...aro.org> wrote:
> On Mon, Aug 15, 2022 at 2:08 PM <lewis.hanly@...rochip.com> wrote:

...

> This looks like  textbook example of a driver that can use
> CONFIG_GPIO_GENERIC

> See e.g. drivers/gpio/gpio-ftgpio010.c for an example
> of how to use bgpio_init() to set up the helper library to handle
> the GPIO side of things and combine it with an irqchip.
> You get get/set_multiple() for free with this approach.
> Also see documentation for bgpio_init() in
> drivers/gpio/gpio-mmio.c.

I would also suggest looking at gpio-regmap.c.

-- 
With Best Regards,
Andy Shevchenko