tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
11struct device;
12struct fwnode_handle;
13
14struct gpio_chip;
15struct gpio_desc;
16struct gpio_device;
17
18#ifdef CONFIG_OF_GPIO
19struct gpio_desc *of_find_gpio(struct device_node *np,
20 const char *con_id,
21 unsigned int idx,
22 unsigned long *lookupflags);
23int of_gpiochip_add(struct gpio_chip *gc);
24void of_gpiochip_remove(struct gpio_chip *gc);
25bool of_gpiochip_instance_match(struct gpio_chip *gc, unsigned int index);
26int of_gpio_count(const struct fwnode_handle *fwnode, const char *con_id);
27#else
28static 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}
35static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; }
36static inline void of_gpiochip_remove(struct gpio_chip *gc) { }
37static inline bool of_gpiochip_instance_match(struct gpio_chip *gc,
38 unsigned int index)
39{
40 return false;
41}
42static inline int of_gpio_count(const struct fwnode_handle *fwnode,
43 const char *con_id)
44{
45 return 0;
46}
47#endif /* CONFIG_OF_GPIO */
48
49extern struct notifier_block gpio_of_notifier;
50
51#endif /* GPIOLIB_OF_H */