linux-kernel - Re: [PATCH 1/5] gpio: export acpi_gpiochip_request

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Date:   Wed, 4 Dec 2019 14:35:11 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Clement Leger <cleger@...ray.eu>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 1/5] gpio: export acpi_gpiochip_request_interrupts in gpio/driver.h

On Wed, Dec 4, 2019 at 12:13 PM Clement Leger <cleger@...ray.eu> wrote:
>
> dwapb-gpio driver which uses this function will be moved to pinctrl for
> pinctrl support. Export this function in gpio/driver.h to allow using
> it.
>

I don't think this is proper way to do it.
The driver has to register IRQ chip and GPIO core will take care of
ACPI related stuff.

> Signed-off-by: Clement Leger <cleger@...ray.eu>
> ---
>  drivers/gpio/gpiolib-acpi.h |  4 ----
>  include/linux/gpio/driver.h | 12 ++++++++++++
>  2 files changed, 12 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpio/gpiolib-acpi.h b/drivers/gpio/gpiolib-acpi.h
> index 1c6d65cf0629..ba2f187babe3 100644
> --- a/drivers/gpio/gpiolib-acpi.h
> +++ b/drivers/gpio/gpiolib-acpi.h
> @@ -34,7 +34,6 @@ struct acpi_gpio_info {
>  void acpi_gpiochip_add(struct gpio_chip *chip);
>  void acpi_gpiochip_remove(struct gpio_chip *chip);
>
> -void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
>  void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
>
>  int acpi_gpio_update_gpiod_flags(enum gpiod_flags *flags,
> @@ -56,9 +55,6 @@ int acpi_gpio_count(struct device *dev, const char *con_id);
>  static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
>  static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }
>
> -static inline void
> -acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }
> -
>  static inline void
>  acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }
>
> diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
> index e2480ef94c55..40b9f13d77e1 100644
> --- a/include/linux/gpio/driver.h
> +++ b/include/linux/gpio/driver.h
> @@ -733,6 +733,18 @@ void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
>
>  struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc);
>
> +
> +#ifdef CONFIG_GPIO_ACPI
> +
> +void acpi_gpiochip_request_interrupts(struct gpio_chip *chip);
> +
> +#else
> +
> +static inline void acpi_gpiochip_request_interrupts(struct gpio_chip *chip)
> +{
> +}
> +
> +#endif /* CONFIG_GPIO_ACPI */
>  #else /* CONFIG_GPIOLIB */
>
>  static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc)
> --
> 2.15.0.276.g89ea799
>


-- 
With Best Regards,
Andy Shevchenko