drivers/gpio/gpiolib-of.h

   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 *dev,
  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 bool of_gpio_need_valid_mask(const struct gpio_chip *gc);
  18 #else
  19 static inline struct gpio_desc *of_find_gpio(struct device *dev,
  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 bool of_gpio_need_valid_mask(const struct gpio_chip *gc)
  33 {
  34         return false;
  35 }
  36 #endif /* CONFIG_OF_GPIO */
  37
  38 extern struct notifier_block gpio_of_notifier;
  39
  40 #endif /* GPIOLIB_OF_H */