Driver core: make struct platform_driver.id_table const
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / include / linux / platform_device.h
blob212da17d06afa66fb07749b6498aa4f3d4f6f727
1 /*
2 * platform_device.h - generic, centralized driver model
4 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
6 * This file is released under the GPLv2
8 * See Documentation/driver-model/ for more information.
9 */
11 #ifndef _PLATFORM_DEVICE_H_
12 #define _PLATFORM_DEVICE_H_
14 #include <linux/device.h>
15 #include <linux/mod_devicetable.h>
17 struct platform_device {
18 const char * name;
19 int id;
20 struct device dev;
21 u32 num_resources;
22 struct resource * resource;
24 const struct platform_device_id *id_entry;
26 /* arch specific additions */
27 struct pdev_archdata archdata;
30 #define platform_get_device_id(pdev) ((pdev)->id_entry)
32 #define to_platform_device(x) container_of((x), struct platform_device, dev)
34 extern int platform_device_register(struct platform_device *);
35 extern void platform_device_unregister(struct platform_device *);
37 extern struct bus_type platform_bus_type;
38 extern struct device platform_bus;
40 extern struct resource *platform_get_resource(struct platform_device *, unsigned int, unsigned int);
41 extern int platform_get_irq(struct platform_device *, unsigned int);
42 extern struct resource *platform_get_resource_byname(struct platform_device *, unsigned int, const char *);
43 extern int platform_get_irq_byname(struct platform_device *, const char *);
44 extern int platform_add_devices(struct platform_device **, int);
46 extern struct platform_device *platform_device_register_simple(const char *, int id,
47 struct resource *, unsigned int);
48 extern struct platform_device *platform_device_register_data(struct device *,
49 const char *, int, const void *, size_t);
51 extern struct platform_device *platform_device_alloc(const char *name, int id);
52 extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num);
53 extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size);
54 extern int platform_device_add(struct platform_device *pdev);
55 extern void platform_device_del(struct platform_device *pdev);
56 extern void platform_device_put(struct platform_device *pdev);
58 struct platform_driver {
59 int (*probe)(struct platform_device *);
60 int (*remove)(struct platform_device *);
61 void (*shutdown)(struct platform_device *);
62 int (*suspend)(struct platform_device *, pm_message_t state);
63 int (*resume)(struct platform_device *);
64 struct device_driver driver;
65 const struct platform_device_id *id_table;
68 extern int platform_driver_register(struct platform_driver *);
69 extern void platform_driver_unregister(struct platform_driver *);
71 /* non-hotpluggable platform devices may use this so that probe() and
72 * its support may live in __init sections, conserving runtime memory.
74 extern int platform_driver_probe(struct platform_driver *driver,
75 int (*probe)(struct platform_device *));
77 #define platform_get_drvdata(_dev) dev_get_drvdata(&(_dev)->dev)
78 #define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data))
80 extern struct platform_device *platform_create_bundle(struct platform_driver *driver,
81 int (*probe)(struct platform_device *),
82 struct resource *res, unsigned int n_res,
83 const void *data, size_t size);
85 /* early platform driver interface */
86 struct early_platform_driver {
87 const char *class_str;
88 struct platform_driver *pdrv;
89 struct list_head list;
90 int requested_id;
91 char *buffer;
92 int bufsize;
95 #define EARLY_PLATFORM_ID_UNSET -2
96 #define EARLY_PLATFORM_ID_ERROR -3
98 extern int early_platform_driver_register(struct early_platform_driver *epdrv,
99 char *buf);
100 extern void early_platform_add_devices(struct platform_device **devs, int num);
102 static inline int is_early_platform_device(struct platform_device *pdev)
104 return !pdev->dev.driver;
107 extern void early_platform_driver_register_all(char *class_str);
108 extern int early_platform_driver_probe(char *class_str,
109 int nr_probe, int user_only);
110 extern void early_platform_cleanup(void);
112 #define early_platform_init(class_string, platdrv) \
113 early_platform_init_buffer(class_string, platdrv, NULL, 0)
115 #ifndef MODULE
116 #define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
117 static __initdata struct early_platform_driver early_driver = { \
118 .class_str = class_string, \
119 .buffer = buf, \
120 .bufsize = bufsiz, \
121 .pdrv = platdrv, \
122 .requested_id = EARLY_PLATFORM_ID_UNSET, \
123 }; \
124 static int __init early_platform_driver_setup_func(char *buffer) \
126 return early_platform_driver_register(&early_driver, buffer); \
128 early_param(class_string, early_platform_driver_setup_func)
129 #else /* MODULE */
130 #define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \
131 static inline char *early_platform_driver_setup_func(void) \
133 return bufsiz ? buf : NULL; \
135 #endif /* MODULE */
137 #endif /* _PLATFORM_DEVICE_H_ */