diff options
Diffstat (limited to 'drivers/gpio/gpiolib-of.h')
| -rw-r--r-- | drivers/gpio/gpiolib-of.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-of.h b/drivers/gpio/gpiolib-of.h new file mode 100644 index 000000000..a6c593e67 --- /dev/null +++ b/drivers/gpio/gpiolib-of.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef GPIOLIB_OF_H +#define GPIOLIB_OF_H + +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/types.h> + +#include <linux/notifier.h> + +struct device; + +struct gpio_chip; +struct gpio_desc; +struct gpio_device; + +#ifdef CONFIG_OF_GPIO +struct gpio_desc *of_find_gpio(struct device_node *np, + const char *con_id, + unsigned int idx, + unsigned long *lookupflags); +int of_gpiochip_add(struct gpio_chip *gc); +void of_gpiochip_remove(struct gpio_chip *gc); +int of_gpio_get_count(struct device *dev, const char *con_id); +void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev); +#else +static inline struct gpio_desc *of_find_gpio(struct device_node *np, + const char *con_id, + unsigned int idx, + unsigned long *lookupflags) +{ + return ERR_PTR(-ENOENT); +} +static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; } +static inline void of_gpiochip_remove(struct gpio_chip *gc) { } +static inline int of_gpio_get_count(struct device *dev, const char *con_id) +{ + return 0; +} +static inline void of_gpio_dev_init(struct gpio_chip *gc, + struct gpio_device *gdev) +{ +} +#endif /* CONFIG_OF_GPIO */ + +extern struct notifier_block gpio_of_notifier; + +#endif /* GPIOLIB_OF_H */ |