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 int of_device_add(struct platform_device *pdev);
30 extern int of_device_register(struct platform_device *ofdev);
31 extern void of_device_unregister(struct platform_device *ofdev);
32
33 extern const void *of_device_get_match_data(const struct device *dev);
34
35 extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
36 extern int of_device_request_module(struct device *dev);
37
38 extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
39 extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
40
of_cpu_device_node_get(int cpu)41 static inline struct device_node *of_cpu_device_node_get(int cpu)
42 {
43 struct device *cpu_dev;
44 cpu_dev = get_cpu_device(cpu);
45 if (!cpu_dev)
46 return of_get_cpu_node(cpu, NULL);
47 return of_node_get(cpu_dev->of_node);
48 }
49
50 int of_dma_configure_id(struct device *dev,
51 struct device_node *np,
52 bool force_dma, const u32 *id);
of_dma_configure(struct device * dev,struct device_node * np,bool force_dma)53 static inline int of_dma_configure(struct device *dev,
54 struct device_node *np,
55 bool force_dma)
56 {
57 return of_dma_configure_id(dev, np, force_dma, NULL);
58 }
59 #else /* CONFIG_OF */
60
of_driver_match_device(struct device * dev,const struct device_driver * drv)61 static inline int of_driver_match_device(struct device *dev,
62 const struct device_driver *drv)
63 {
64 return 0;
65 }
66
of_device_uevent(struct device * dev,struct kobj_uevent_env * env)67 static inline void of_device_uevent(struct device *dev,
68 struct kobj_uevent_env *env) { }
69
of_device_get_match_data(const struct device * dev)70 static inline const void *of_device_get_match_data(const struct device *dev)
71 {
72 return NULL;
73 }
74
of_device_modalias(struct device * dev,char * str,ssize_t len)75 static inline int of_device_modalias(struct device *dev,
76 char *str, ssize_t len)
77 {
78 return -ENODEV;
79 }
80
of_device_request_module(struct device * dev)81 static inline int of_device_request_module(struct device *dev)
82 {
83 return -ENODEV;
84 }
85
of_device_uevent_modalias(struct device * dev,struct kobj_uevent_env * env)86 static inline int of_device_uevent_modalias(struct device *dev,
87 struct kobj_uevent_env *env)
88 {
89 return -ENODEV;
90 }
91
of_match_device(const struct of_device_id * matches,const struct device * dev)92 static inline const struct of_device_id *of_match_device(
93 const struct of_device_id *matches, const struct device *dev)
94 {
95 return NULL;
96 }
97
of_cpu_device_node_get(int cpu)98 static inline struct device_node *of_cpu_device_node_get(int cpu)
99 {
100 return NULL;
101 }
102
of_dma_configure_id(struct device * dev,struct device_node * np,bool force_dma)103 static inline int of_dma_configure_id(struct device *dev,
104 struct device_node *np,
105 bool force_dma)
106 {
107 return 0;
108 }
of_dma_configure(struct device * dev,struct device_node * np,bool force_dma)109 static inline int of_dma_configure(struct device *dev,
110 struct device_node *np,
111 bool force_dma)
112 {
113 return 0;
114 }
115 #endif /* CONFIG_OF */
116
117 #endif /* _LINUX_OF_DEVICE_H */
118