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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 | |
17 | struct platform_device { |
18 | const char * name; |
19 | int id; |
20 | struct device dev; |
21 | u32 num_resources; |
22 | struct resource * resource; |
23 | |
24 | const struct platform_device_id *id_entry; |
25 | |
26 | /* arch specific additions */ |
27 | struct pdev_archdata archdata; |
28 | }; |
29 | |
30 | #define platform_get_device_id(pdev) ((pdev)->id_entry) |
31 | |
32 | #define to_platform_device(x) container_of((x), struct platform_device, dev) |
33 | |
34 | extern int platform_device_register(struct platform_device *); |
35 | extern void platform_device_unregister(struct platform_device *); |
36 | |
37 | extern struct bus_type platform_bus_type; |
38 | extern struct device platform_bus; |
39 | |
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); |
45 | |
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); |
50 | |
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); |
57 | |
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; |
66 | }; |
67 | |
68 | extern int platform_driver_register(struct platform_driver *); |
69 | extern void platform_driver_unregister(struct platform_driver *); |
70 | |
71 | /* non-hotpluggable platform devices may use this so that probe() and |
72 | * its support may live in __init sections, conserving runtime memory. |
73 | */ |
74 | extern int platform_driver_probe(struct platform_driver *driver, |
75 | int (*probe)(struct platform_device *)); |
76 | |
77 | #define platform_get_drvdata(_dev) dev_get_drvdata(&(_dev)->dev) |
78 | #define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data)) |
79 | |
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); |
84 | |
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; |
93 | }; |
94 | |
95 | #define EARLY_PLATFORM_ID_UNSET -2 |
96 | #define EARLY_PLATFORM_ID_ERROR -3 |
97 | |
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); |
101 | |
102 | static inline int is_early_platform_device(struct platform_device *pdev) |
103 | { |
104 | return !pdev->dev.driver; |
105 | } |
106 | |
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); |
111 | |
112 | #define early_platform_init(class_string, platdrv) \ |
113 | early_platform_init_buffer(class_string, platdrv, NULL, 0) |
114 | |
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) \ |
125 | { \ |
126 | return early_platform_driver_register(&early_driver, buffer); \ |
127 | } \ |
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) \ |
132 | { \ |
133 | return bufsiz ? buf : NULL; \ |
134 | } |
135 | #endif /* MODULE */ |
136 | |
137 | #endif /* _PLATFORM_DEVICE_H_ */ |
138 |
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