diff mbox series

[v3,01/13] gpiolib: Introduce for_each_gpiochip_node() loop helper

Message ID 20220330145030.1562-2-andriy.shevchenko@linux.intel.com (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show
Series gpiolib: Two new helpers and way toward fwnode | expand

Commit Message

Andy Shevchenko March 30, 2022, 2:50 p.m. UTC 
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>
---
 include/linux/gpio/driver.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index b0728c8ad90c..2142ffc7338c 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;
@@ -747,4 +748,8 @@  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 */