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/errno.h> 8 #include <linux/types.h> 9 10 #include <linux/notifier.h> 11 12 struct device; 13 14 struct gpio_chip; 15 struct gpio_desc; 16 struct gpio_device; 17 18 #ifdef CONFIG_OF_GPIO 19 struct gpio_desc *of_find_gpio(struct device_node *np, 20 const char *con_id, 21 unsigned int idx, 22 unsigned long *lookupflags); 23 int of_gpiochip_add(struct gpio_chip *gc); 24 void of_gpiochip_remove(struct gpio_chip *gc); 25 int of_gpio_get_count(struct device *dev, const char *con_id); 26 void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev); 27 #else 28 static inline struct gpio_desc *of_find_gpio(struct device_node *np, 29 const char *con_id, 30 unsigned int idx, 31 unsigned long *lookupflags) 32 { 33 return ERR_PTR(-ENOENT); 34 } 35 static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; } 36 static inline void of_gpiochip_remove(struct gpio_chip *gc) { } 37 static inline int of_gpio_get_count(struct device *dev, const char *con_id) 38 { 39 return 0; 40 } 41 static inline void of_gpio_dev_init(struct gpio_chip *gc, 42 struct gpio_device *gdev) 43 { 44 } 45 #endif /* CONFIG_OF_GPIO */ 46 47 extern struct notifier_block gpio_of_notifier; 48 49 #endif /* GPIOLIB_OF_H */ 50