linux-kernel - Re: [PATCH v2 07/13] pinctrl: renesas: rza1: Switch to use for_each_gpiochip

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Date:   Wed, 30 Mar 2022 12:00:27 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Qianggui Song <qianggui.song@...ogic.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Fabien Dessenne <fabien.dessenne@...s.st.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        openbmc@...ts.ozlabs.org,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Linus Walleij <linus.walleij@...aro.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Philipp Zabel <p.zabel@...gutronix.de>
Subject: Re: [PATCH v2 07/13] pinctrl: renesas: rza1: Switch to use
 for_each_gpiochip_node() helper

Hi Andy,

On Tue, Mar 29, 2022 at 5:29 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
> Switch the code to use for_each_gpiochip_node() helper.
>
> While at it, in order to avoid additional churn in the future,
> switch to fwnode APIs where it makes sense.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Thanks for your patch!

> --- a/drivers/pinctrl/renesas/pinctrl-rza1.c
> +++ b/drivers/pinctrl/renesas/pinctrl-rza1.c

> @@ -1166,17 +1167,17 @@ static const struct pinmux_ops rza1_pinmux_ops = {
>   * @range: pin range to register to pinctrl core
>   */
>  static int rza1_parse_gpiochip(struct rza1_pinctrl *rza1_pctl,
> -                              struct device_node *np,
> +                              struct fwnode_handle *fwnode,
>                                struct gpio_chip *chip,
>                                struct pinctrl_gpio_range *range)
>  {
>         const char *list_name = "gpio-ranges";
> -       struct of_phandle_args of_args;
> +       struct fwnode_reference_args of_args;

fw_args?

>         unsigned int gpioport;
>         u32 pinctrl_base;
>         int ret;
>
> -       ret = of_parse_phandle_with_fixed_args(np, list_name, 3, 0, &of_args);
> +       ret = fwnode_property_get_reference_args(fwnode, list_name, NULL, 3, 0, &of_args);
>         if (ret) {
>                 dev_err(rza1_pctl->dev, "Unable to parse %s list property\n",
>                         list_name);
> @@ -1197,13 +1198,12 @@ static int rza1_parse_gpiochip(struct rza1_pinctrl *rza1_pctl,
>
>         *chip           = rza1_gpiochip_template;
>         chip->base      = -1;
> -       chip->label     = devm_kasprintf(rza1_pctl->dev, GFP_KERNEL, "%pOFn",
> -                                        np);
> +       chip->label     = devm_kasprintf(rza1_pctl->dev, GFP_KERNEL, "%pfw", fwnode);

This changes the label from e.g. "/soc/pinctrl@...e3000/gpio-11" to "gpio-11".

%pfwP?

>         if (!chip->label)
>                 return -ENOMEM;
>
>         chip->ngpio     = of_args.args[2];
> -       chip->of_node   = np;
> +       chip->fwnode    = fwnode;
>         chip->parent    = rza1_pctl->dev;
>
>         range->id       = gpioport;

With the above fixed:
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Tested-by: Geert Uytterhoeven <geert+renesas@...der.be>
Acked-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds