| Message ID | 20220329152926.50958-3-andriy.shevchenko@linux.intel.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | gpiolib: Two new helpers and way toward fwnode | expand |
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index e6b9c17614ef..bc2ea9f65022 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -755,4 +755,16 @@ static inline void gpiochip_unlock_as_irq(struct gpio_chip *gc, device_for_each_child_node(dev, child) \ if (!fwnode_property_present(child, "gpio-controller")) {} else +static inline unsigned int gpiochip_node_count(struct device *dev) +{ + struct fwnode_handle *child; + unsigned int count; + + count = 0; + for_each_gpiochip_node(dev, child) + count++; + + return count; +} + #endif /* __LINUX_GPIO_DRIVER_H */
The gpiochip_node_count() helper iterates over the device child nodes that have the "gpio-controller" property set. It returns the number of such nodes under a given device. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- include/linux/gpio/driver.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)