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linux
1/*
2 * platform_device.h - generic, centralized driver model
3 *
4 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
5 *
6 * This file is released under the GPLv2
7 *
8 * See Documentation/driver-model/ for more information.
9 */
10
11#ifndef _PLATFORM_DEVICE_H_
12#define _PLATFORM_DEVICE_H_
13
14#include <linux/device.h>
15#include <linux/mod_devicetable.h>
16
17struct platform_device {
18 const char * name;
19 int id;
20 struct device dev;
21 u32 num_resources;
22 struct resource * resource;
23
24 struct platform_device_id *id_entry;
25};
26
27#define platform_get_device_id(pdev) ((pdev)->id_entry)
28
29#define to_platform_device(x) container_of((x), struct platform_device, dev)
30
31extern int platform_device_register(struct platform_device *);
32extern void platform_device_unregister(struct platform_device *);
33
34extern struct bus_type platform_bus_type;
35extern struct device platform_bus;
36
37extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int);
38extern int platform_get_irq(struct platform_device *, unsigned int);
39extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, const char *);
40extern int platform_get_irq_byname(struct platform_device *, const char *);
41extern int platform_add_devices(struct platform_device **, int);
42
43extern struct platform_device *platform_device_register_simple(const char *, int id,
44 struct resource *, unsigned int);
45extern struct platform_device *platform_device_register_data(struct device *,
46 const char *, int, const void *, size_t);
47
48extern struct platform_device *platform_device_alloc(const char *name, int id);
49extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num);
50extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size);
51extern int platform_device_add(struct platform_device *pdev);
52extern void platform_device_del(struct platform_device *pdev);
53extern void platform_device_put(struct platform_device *pdev);
54
55struct platform_driver {
56 int (*probe)(struct platform_device *);
57 int (*remove)(struct platform_device *);
58 void (*shutdown)(struct platform_device *);
59 int (*suspend)(struct platform_device *, pm_message_t state);
60 int (*suspend_late)(struct platform_device *, pm_message_t state);
61 int (*resume_early)(struct platform_device *);
62 int (*resume)(struct platform_device *);
63 struct device_driver driver;
64 struct platform_device_id *id_table;
65};
66
67extern int platform_driver_register(struct platform_driver *);
68extern void platform_driver_unregister(struct platform_driver *);
69
70/* non-hotpluggable platform devices may use this so that probe() and
71 * its support may live in __init sections, conserving runtime memory.
72 */
73extern int platform_driver_probe(struct platform_driver *driver,
74 int (*probe)(struct platform_device *));
75
76#define platform_get_drvdata(_dev) dev_get_drvdata(&(_dev)->dev)
77#define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data))
78
79/* early platform driver interface */
80struct early_platform_driver {
81 const char *class_str;
82 struct platform_driver *pdrv;
83 struct list_head list;
84 int requested_id;
85};
86
87#define EARLY_PLATFORM_ID_UNSET -2
88#define EARLY_PLATFORM_ID_ERROR -3
89
90extern int early_platform_driver_register(struct early_platform_driver *epdrv,
91 char *buf);
92extern void early_platform_add_devices(struct platform_device **devs, int num);
93
94static inline int is_early_platform_device(struct platform_device *pdev)
95{
96 return !pdev->dev.driver;
97}
98
99extern void early_platform_driver_register_all(char *class_str);
100extern int early_platform_driver_probe(char *class_str,
101 int nr_probe, int user_only);
102extern void early_platform_cleanup(void);
103
104
105#ifndef MODULE
106#define early_platform_init(class_string, platform_driver) \
107static __initdata struct early_platform_driver early_driver = { \
108 .class_str = class_string, \
109 .pdrv = platform_driver, \
110 .requested_id = EARLY_PLATFORM_ID_UNSET, \
111}; \
112static int __init early_platform_driver_setup_func(char *buf) \
113{ \
114 return early_platform_driver_register(&early_driver, buf); \
115} \
116early_param(class_string, early_platform_driver_setup_func)
117#else /* MODULE */
118#define early_platform_init(class_string, platform_driver)
119#endif /* MODULE */
120
121#endif /* _PLATFORM_DEVICE_H_ */