[PATCH v4 01/13] gpiolib: Introduce for_each_gpiochip_node() loop helper

[Bartosz Golaszewski]

On Fri, Apr 1, 2022 at 12:36 PM Andy Shevchenko
<andriy.shevchenko at linux.intel.com> wrote:
>
> Introduce for_each_gpiochip_node() loop helper which iterates over
> the GPIO controller child nodes of a given device.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas at glider.be>
> Tested-by: Geert Uytterhoeven <geert+renesas at glider.be>
> ---
>  include/linux/gpio/driver.h | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
> index 98c93510640e..bfc91f122d5f 100644
> --- a/include/linux/gpio/driver.h
> +++ b/include/linux/gpio/driver.h
> @@ -3,13 +3,14 @@
>  #define __LINUX_GPIO_DRIVER_H
>
>  #include <linux/device.h>
> -#include <linux/types.h>
>  #include <linux/irq.h>
>  #include <linux/irqchip/chained_irq.h>
>  #include <linux/irqdomain.h>
>  #include <linux/lockdep.h>
>  #include <linux/pinctrl/pinctrl.h>
>  #include <linux/pinctrl/pinconf-generic.h>
> +#include <linux/property.h>
> +#include <linux/types.h>
>
>  struct gpio_desc;
>  struct of_phandle_args;
> @@ -750,4 +751,8 @@ static inline void gpiochip_unlock_as_irq(struct gpio_chip *gc,
>  }
>  #endif /* CONFIG_GPIOLIB */
>
> +#define for_each_gpiochip_node(dev, child)                                     \
> +       device_for_each_child_node(dev, child)                                  \
> +               if (!fwnode_property_present(child, "gpio-controller")) {} else
> +
>  #endif /* __LINUX_GPIO_DRIVER_H */
> --
> 2.35.1
>

Acked-by: Bartosz Golaszewski <brgl at bgdev.pl>