linux-kernel - Re: [PATCH v6 02/15] gpio: regmap: set gpio_chip of

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Date:   Wed, 10 Mar 2021 16:01:30 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Álvaro Fernández Rojas <noltari@...il.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
        Jonas Gorski <jonas.gorski@...il.com>,
        Necip Fazil Yildiran <fazilyildiran@...il.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v6 02/15] gpio: regmap: set gpio_chip of_node

On Wed, Mar 10, 2021 at 2:55 PM Álvaro Fernández Rojas
<noltari@...il.com> wrote:
>
> This is needed for properly registering GPIO regmap as a child of a regmap
> pin controller.

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Thanks!

> Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
> Reviewed-by: Michael Walle <michael@...le.cc>
> ---
>  v6: add comment and simplify of_node assignment
>  v5: switch to fwnode
>  v4: fix documentation
>  v3: introduce patch needed for properly parsing gpio-range
>
>  drivers/gpio/gpio-regmap.c  | 1 +
>  include/linux/gpio/regmap.h | 4 ++++
>  2 files changed, 5 insertions(+)
>
> diff --git a/drivers/gpio/gpio-regmap.c b/drivers/gpio/gpio-regmap.c
> index 5412cb3b0b2a..d4fc656e70b0 100644
> --- a/drivers/gpio/gpio-regmap.c
> +++ b/drivers/gpio/gpio-regmap.c
> @@ -249,6 +249,7 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config
>
>         chip = &gpio->gpio_chip;
>         chip->parent = config->parent;
> +       chip->of_node = to_of_node(config->fwnode);
>         chip->base = -1;
>         chip->ngpio = config->ngpio;
>         chip->names = config->names;
> diff --git a/include/linux/gpio/regmap.h b/include/linux/gpio/regmap.h
> index ad76f3d0a6ba..334dd928042b 100644
> --- a/include/linux/gpio/regmap.h
> +++ b/include/linux/gpio/regmap.h
> @@ -4,6 +4,7 @@
>  #define _LINUX_GPIO_REGMAP_H
>
>  struct device;
> +struct fwnode_handle;
>  struct gpio_regmap;
>  struct irq_domain;
>  struct regmap;
> @@ -16,6 +17,8 @@ struct regmap;
>   * @parent:            The parent device
>   * @regmap:            The regmap used to access the registers
>   *                     given, the name of the device is used
> + * @fwnode:            (Optional) The firmware node.
> + *                     If not given, the fwnode of the parent is used.
>   * @label:             (Optional) Descriptive name for GPIO controller.
>   *                     If not given, the name of the device is used.
>   * @ngpio:             Number of GPIOs
> @@ -57,6 +60,7 @@ struct regmap;
>  struct gpio_regmap_config {
>         struct device *parent;
>         struct regmap *regmap;
> +       struct fwnode_handle *fwnode;
>
>         const char *label;
>         int ngpio;
> --
> 2.20.1
>


-- 
With Best Regards,
Andy Shevchenko