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gpiolib: Introduce for_each_gpiochip_node() loop helper

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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@linux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
This commit is contained in:
Andy Shevchenko 2022-04-01 13:35:52 +03:00
parent 0c2cae09a7
commit 85ebb1a6bd
1 changed files with 6 additions and 1 deletions
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7
include/linux/gpio/driver.h
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@ -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 */