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
12 struct device;
13
14 #ifdef CONFIG_OF
15 extern 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 */
of_driver_match_device(struct device * dev,const struct device_driver * drv)23 static 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
29 extern struct platform_device *of_dev_get(struct platform_device *dev);
30 extern void of_dev_put(struct platform_device *dev);
31
32 extern int of_device_add(struct platform_device *pdev);
33 extern int of_device_register(struct platform_device *ofdev);
34 extern void of_device_unregister(struct platform_device *ofdev);
35
36 extern const void *of_device_get_match_data(const struct device *dev);
37
38 extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
39 extern int of_device_request_module(struct device *dev);
40
41 extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
42 extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
43
of_device_node_put(struct device * dev)44 static inline void of_device_node_put(struct device *dev)
45 {
46 of_node_put(dev->of_node);
47 }
48
of_cpu_device_node_get(int cpu)49 static 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
58 int of_dma_configure(struct device *dev,
59 struct device_node *np,
60 bool force_dma);
61 void of_dma_deconfigure(struct device *dev);
62 #else /* CONFIG_OF */
63
of_driver_match_device(struct device * dev,const struct device_driver * drv)64 static inline int of_driver_match_device(struct device *dev,
65 const struct device_driver *drv)
66 {
67 return 0;
68 }
69
of_device_uevent(struct device * dev,struct kobj_uevent_env * env)70 static inline void of_device_uevent(struct device *dev,
71 struct kobj_uevent_env *env) { }
72
of_device_get_match_data(const struct device * dev)73 static inline const void *of_device_get_match_data(const struct device *dev)
74 {
75 return NULL;
76 }
77
of_device_modalias(struct device * dev,char * str,ssize_t len)78 static inline int of_device_modalias(struct device *dev,
79 char *str, ssize_t len)
80 {
81 return -ENODEV;
82 }
83
of_device_request_module(struct device * dev)84 static inline int of_device_request_module(struct device *dev)
85 {
86 return -ENODEV;
87 }
88
of_device_uevent_modalias(struct device * dev,struct kobj_uevent_env * env)89 static inline int of_device_uevent_modalias(struct device *dev,
90 struct kobj_uevent_env *env)
91 {
92 return -ENODEV;
93 }
94
of_device_node_put(struct device * dev)95 static inline void of_device_node_put(struct device *dev) { }
96
__of_match_device(const struct of_device_id * matches,const struct device * dev)97 static 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
of_cpu_device_node_get(int cpu)105 static inline struct device_node *of_cpu_device_node_get(int cpu)
106 {
107 return NULL;
108 }
109
of_dma_configure(struct device * dev,struct device_node * np,bool force_dma)110 static inline int of_dma_configure(struct device *dev,
111 struct device_node *np,
112 bool force_dma)
113 {
114 return 0;
115 }
of_dma_deconfigure(struct device * dev)116 static inline void of_dma_deconfigure(struct device *dev)
117 {}
118 #endif /* CONFIG_OF */
119
120 #endif /* _LINUX_OF_DEVICE_H */
121