Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_OF_DEVICE_H
3#define _LINUX_OF_DEVICE_H
4
5#include <linux/cpu.h>
6#include <linux/platform_device.h>
7#include <linux/of_platform.h> /* temporary until merge */
8
9#include <linux/of.h>
10#include <linux/mod_devicetable.h>
11
12struct device;
13
14#ifdef CONFIG_OF
15extern const struct of_device_id *of_match_device(
16 const struct of_device_id *matches, const struct device *dev);
17
18/**
19 * of_driver_match_device - Tell if a driver's of_match_table matches a device.
20 * @drv: the device_driver structure to test
21 * @dev: the device structure to match against
22 */
23static inline int of_driver_match_device(struct device *dev,
24 const struct device_driver *drv)
25{
26 return of_match_device(drv->of_match_table, dev) != NULL;
27}
28
29extern struct platform_device *of_dev_get(struct platform_device *dev);
30extern void of_dev_put(struct platform_device *dev);
31
32extern int of_device_add(struct platform_device *pdev);
33extern int of_device_register(struct platform_device *ofdev);
34extern void of_device_unregister(struct platform_device *ofdev);
35
36extern const void *of_device_get_match_data(const struct device *dev);
37
38extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
39extern int of_device_request_module(struct device *dev);
40
41extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
42extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
43
44static inline void of_device_node_put(struct device *dev)
45{
46 of_node_put(dev->of_node);
47}
48
49static inline struct device_node *of_cpu_device_node_get(int cpu)
50{
51 struct device *cpu_dev;
52 cpu_dev = get_cpu_device(cpu);
53 if (!cpu_dev)
54 return of_get_cpu_node(cpu, NULL);
55 return of_node_get(cpu_dev->of_node);
56}
57
58int of_dma_configure(struct device *dev,
59 struct device_node *np,
60 bool force_dma);
61void of_dma_deconfigure(struct device *dev);
62#else /* CONFIG_OF */
63
64static inline int of_driver_match_device(struct device *dev,
65 const struct device_driver *drv)
66{
67 return 0;
68}
69
70static inline void of_device_uevent(struct device *dev,
71 struct kobj_uevent_env *env) { }
72
73static inline const void *of_device_get_match_data(const struct device *dev)
74{
75 return NULL;
76}
77
78static inline int of_device_modalias(struct device *dev,
79 char *str, ssize_t len)
80{
81 return -ENODEV;
82}
83
84static inline int of_device_request_module(struct device *dev)
85{
86 return -ENODEV;
87}
88
89static inline int of_device_uevent_modalias(struct device *dev,
90 struct kobj_uevent_env *env)
91{
92 return -ENODEV;
93}
94
95static inline void of_device_node_put(struct device *dev) { }
96
97static inline const struct of_device_id *__of_match_device(
98 const struct of_device_id *matches, const struct device *dev)
99{
100 return NULL;
101}
102#define of_match_device(matches, dev) \
103 __of_match_device(of_match_ptr(matches), (dev))
104
105static inline struct device_node *of_cpu_device_node_get(int cpu)
106{
107 return NULL;
108}
109
110static inline int of_dma_configure(struct device *dev,
111 struct device_node *np,
112 bool force_dma)
113{
114 return 0;
115}
116static inline void of_dma_deconfigure(struct device *dev)
117{}
118#endif /* CONFIG_OF */
119
120#endif /* _LINUX_OF_DEVICE_H */