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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> | |
57fee4a5 | 15 | #include <linux/mod_devicetable.h> |
bbbf508d RK |
16 | |
17 | struct platform_device { | |
18 | const char * name; | |
1359555e | 19 | int id; |
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20 | struct device dev; |
21 | u32 num_resources; | |
22 | struct resource * resource; | |
57fee4a5 | 23 | |
3d03ba4d | 24 | const struct platform_device_id *id_entry; |
d7aacadd MD |
25 | |
26 | /* arch specific additions */ | |
27 | struct pdev_archdata archdata; | |
bbbf508d RK |
28 | }; |
29 | ||
57fee4a5 EM |
30 | #define platform_get_device_id(pdev) ((pdev)->id_entry) |
31 | ||
bbbf508d RK |
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); | |
c0afe7ba LW |
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 *); | |
bbbf508d RK |
44 | extern int platform_add_devices(struct platform_device **, int); |
45 | ||
44f28bde UKK |
46 | extern struct platform_device *platform_device_register_resndata( |
47 | struct device *parent, const char *name, int id, | |
48 | const struct resource *res, unsigned int num, | |
49 | const void *data, size_t size); | |
50 | ||
51 | /** | |
52 | * platform_device_register_simple - add a platform-level device and its resources | |
53 | * @name: base name of the device we're adding | |
54 | * @id: instance id | |
55 | * @res: set of resources that needs to be allocated for the device | |
56 | * @num: number of resources | |
57 | * | |
58 | * This function creates a simple platform device that requires minimal | |
59 | * resource and memory management. Canned release function freeing memory | |
60 | * allocated for the device allows drivers using such devices to be | |
61 | * unloaded without waiting for the last reference to the device to be | |
62 | * dropped. | |
63 | * | |
64 | * This interface is primarily intended for use with legacy drivers which | |
65 | * probe hardware directly. Because such drivers create sysfs device nodes | |
66 | * themselves, rather than letting system infrastructure handle such device | |
67 | * enumeration tasks, they don't fully conform to the Linux driver model. | |
68 | * In particular, when such drivers are built as modules, they can't be | |
69 | * "hotplugged". | |
70 | * | |
71 | * Returns &struct platform_device pointer on success, or ERR_PTR() on error. | |
72 | */ | |
73 | static inline struct platform_device *platform_device_register_simple( | |
74 | const char *name, int id, | |
75 | const struct resource *res, unsigned int num) | |
76 | { | |
77 | return platform_device_register_resndata(NULL, name, id, | |
78 | res, num, NULL, 0); | |
79 | } | |
80 | ||
81 | /** | |
82 | * platform_device_register_data - add a platform-level device with platform-specific data | |
83 | * @parent: parent device for the device we're adding | |
84 | * @name: base name of the device we're adding | |
85 | * @id: instance id | |
86 | * @data: platform specific data for this platform device | |
87 | * @size: size of platform specific data | |
88 | * | |
89 | * This function creates a simple platform device that requires minimal | |
90 | * resource and memory management. Canned release function freeing memory | |
91 | * allocated for the device allows drivers using such devices to be | |
92 | * unloaded without waiting for the last reference to the device to be | |
93 | * dropped. | |
94 | * | |
95 | * Returns &struct platform_device pointer on success, or ERR_PTR() on error. | |
96 | */ | |
97 | static inline struct platform_device *platform_device_register_data( | |
98 | struct device *parent, const char *name, int id, | |
99 | const void *data, size_t size) | |
100 | { | |
101 | return platform_device_register_resndata(parent, name, id, | |
102 | NULL, 0, data, size); | |
103 | } | |
bbbf508d | 104 | |
1359555e | 105 | extern struct platform_device *platform_device_alloc(const char *name, int id); |
0b7f1a7e GU |
106 | extern int platform_device_add_resources(struct platform_device *pdev, |
107 | const struct resource *res, | |
108 | unsigned int num); | |
6eefd34f | 109 | extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size); |
37c12e74 | 110 | extern int platform_device_add(struct platform_device *pdev); |
93ce3061 | 111 | extern void platform_device_del(struct platform_device *pdev); |
37c12e74 RK |
112 | extern void platform_device_put(struct platform_device *pdev); |
113 | ||
00d3dcdd RK |
114 | struct platform_driver { |
115 | int (*probe)(struct platform_device *); | |
116 | int (*remove)(struct platform_device *); | |
117 | void (*shutdown)(struct platform_device *); | |
118 | int (*suspend)(struct platform_device *, pm_message_t state); | |
119 | int (*resume)(struct platform_device *); | |
120 | struct device_driver driver; | |
831fad2f | 121 | const struct platform_device_id *id_table; |
00d3dcdd RK |
122 | }; |
123 | ||
124 | extern int platform_driver_register(struct platform_driver *); | |
125 | extern void platform_driver_unregister(struct platform_driver *); | |
126 | ||
c67334fb DB |
127 | /* non-hotpluggable platform devices may use this so that probe() and |
128 | * its support may live in __init sections, conserving runtime memory. | |
129 | */ | |
130 | extern int platform_driver_probe(struct platform_driver *driver, | |
131 | int (*probe)(struct platform_device *)); | |
132 | ||
00d3dcdd RK |
133 | #define platform_get_drvdata(_dev) dev_get_drvdata(&(_dev)->dev) |
134 | #define platform_set_drvdata(_dev,data) dev_set_drvdata(&(_dev)->dev, (data)) | |
135 | ||
ecdf6ceb DT |
136 | extern struct platform_device *platform_create_bundle(struct platform_driver *driver, |
137 | int (*probe)(struct platform_device *), | |
138 | struct resource *res, unsigned int n_res, | |
139 | const void *data, size_t size); | |
140 | ||
c64a0926 KH |
141 | extern const struct dev_pm_ops * platform_bus_get_pm_ops(void); |
142 | extern void platform_bus_set_pm_ops(const struct dev_pm_ops *pm); | |
143 | ||
13977091 MD |
144 | /* early platform driver interface */ |
145 | struct early_platform_driver { | |
146 | const char *class_str; | |
147 | struct platform_driver *pdrv; | |
148 | struct list_head list; | |
149 | int requested_id; | |
c60e0504 MD |
150 | char *buffer; |
151 | int bufsize; | |
13977091 MD |
152 | }; |
153 | ||
154 | #define EARLY_PLATFORM_ID_UNSET -2 | |
155 | #define EARLY_PLATFORM_ID_ERROR -3 | |
156 | ||
157 | extern int early_platform_driver_register(struct early_platform_driver *epdrv, | |
158 | char *buf); | |
159 | extern void early_platform_add_devices(struct platform_device **devs, int num); | |
160 | ||
161 | static inline int is_early_platform_device(struct platform_device *pdev) | |
162 | { | |
163 | return !pdev->dev.driver; | |
164 | } | |
165 | ||
166 | extern void early_platform_driver_register_all(char *class_str); | |
167 | extern int early_platform_driver_probe(char *class_str, | |
168 | int nr_probe, int user_only); | |
169 | extern void early_platform_cleanup(void); | |
170 | ||
c60e0504 MD |
171 | #define early_platform_init(class_string, platdrv) \ |
172 | early_platform_init_buffer(class_string, platdrv, NULL, 0) | |
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173 | |
174 | #ifndef MODULE | |
c60e0504 | 175 | #define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \ |
13977091 MD |
176 | static __initdata struct early_platform_driver early_driver = { \ |
177 | .class_str = class_string, \ | |
c60e0504 MD |
178 | .buffer = buf, \ |
179 | .bufsize = bufsiz, \ | |
180 | .pdrv = platdrv, \ | |
13977091 MD |
181 | .requested_id = EARLY_PLATFORM_ID_UNSET, \ |
182 | }; \ | |
c60e0504 | 183 | static int __init early_platform_driver_setup_func(char *buffer) \ |
13977091 | 184 | { \ |
c60e0504 | 185 | return early_platform_driver_register(&early_driver, buffer); \ |
13977091 MD |
186 | } \ |
187 | early_param(class_string, early_platform_driver_setup_func) | |
188 | #else /* MODULE */ | |
c60e0504 MD |
189 | #define early_platform_init_buffer(class_string, platdrv, buf, bufsiz) \ |
190 | static inline char *early_platform_driver_setup_func(void) \ | |
191 | { \ | |
192 | return bufsiz ? buf : NULL; \ | |
193 | } | |
13977091 MD |
194 | #endif /* MODULE */ |
195 | ||
bbbf508d | 196 | #endif /* _PLATFORM_DEVICE_H_ */ |