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