1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef GPIOLIB_OF_H 4 #define GPIOLIB_OF_H 5 6 #include <linux/err.h> 7 #include <linux/types.h> 8 9 #include <linux/notifier.h> 10 11 struct device; 12 13 struct gpio_chip; 14 struct gpio_desc; 15 struct gpio_device; 16 17 #ifdef CONFIG_OF_GPIO 18 struct gpio_desc *of_find_gpio(struct device_node *np, 19 const char *con_id, 20 unsigned int idx, 21 unsigned long *lookupflags); 22 int of_gpiochip_add(struct gpio_chip *gc); 23 void of_gpiochip_remove(struct gpio_chip *gc); 24 int of_gpio_get_count(struct device *dev, const char *con_id); 25 #else 26 static inline struct gpio_desc *of_find_gpio(struct device_node *np, 27 const char *con_id, 28 unsigned int idx, 29 unsigned long *lookupflags) 30 { 31 return ERR_PTR(-ENOENT); 32 } 33 static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; } 34 static inline void of_gpiochip_remove(struct gpio_chip *gc) { } 35 static inline int of_gpio_get_count(struct device *dev, const char *con_id) 36 { 37 return 0; 38 } 39 #endif /* CONFIG_OF_GPIO */ 40 41 extern struct notifier_block gpio_of_notifier; 42 43 #endif /* GPIOLIB_OF_H */ 44