Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * device.h - generic, centralized driver model | |
3 | * | |
4 | * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org> | |
89790fd7 | 5 | * Copyright (c) 2004-2007 Greg Kroah-Hartman <gregkh@suse.de> |
1da177e4 LT |
6 | * |
7 | * This file is released under the GPLv2 | |
8 | * | |
9 | * See Documentation/driver-model/ for more information. | |
10 | */ | |
11 | ||
12 | #ifndef _DEVICE_H_ | |
13 | #define _DEVICE_H_ | |
14 | ||
1da177e4 LT |
15 | #include <linux/ioport.h> |
16 | #include <linux/kobject.h> | |
465c7a3a | 17 | #include <linux/klist.h> |
1da177e4 | 18 | #include <linux/list.h> |
4a7fb636 | 19 | #include <linux/compiler.h> |
1da177e4 LT |
20 | #include <linux/types.h> |
21 | #include <linux/module.h> | |
22 | #include <linux/pm.h> | |
23 | #include <asm/semaphore.h> | |
24 | #include <asm/atomic.h> | |
c6dbaef2 | 25 | #include <asm/device.h> |
1da177e4 LT |
26 | |
27 | #define DEVICE_NAME_SIZE 50 | |
28 | #define DEVICE_NAME_HALF __stringify(20) /* Less than half to accommodate slop */ | |
29 | #define DEVICE_ID_SIZE 32 | |
30 | #define BUS_ID_SIZE KOBJ_NAME_LEN | |
31 | ||
32 | ||
1da177e4 LT |
33 | struct device; |
34 | struct device_driver; | |
35 | struct class; | |
36 | struct class_device; | |
b8c5cec2 KS |
37 | struct bus_type; |
38 | ||
39 | struct bus_attribute { | |
40 | struct attribute attr; | |
41 | ssize_t (*show)(struct bus_type *, char * buf); | |
42 | ssize_t (*store)(struct bus_type *, const char * buf, size_t count); | |
43 | }; | |
44 | ||
45 | #define BUS_ATTR(_name,_mode,_show,_store) \ | |
46 | struct bus_attribute bus_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
47 | ||
48 | extern int __must_check bus_create_file(struct bus_type *, | |
49 | struct bus_attribute *); | |
50 | extern void bus_remove_file(struct bus_type *, struct bus_attribute *); | |
1da177e4 LT |
51 | |
52 | struct bus_type { | |
8d790d74 | 53 | const char * name; |
b8c5cec2 | 54 | struct module * owner; |
1da177e4 | 55 | |
823bccfc | 56 | struct kset subsys; |
1da177e4 LT |
57 | struct kset drivers; |
58 | struct kset devices; | |
465c7a3a | 59 | struct klist klist_devices; |
38fdac3c | 60 | struct klist klist_drivers; |
1da177e4 | 61 | |
116af378 BH |
62 | struct blocking_notifier_head bus_notifier; |
63 | ||
1da177e4 LT |
64 | struct bus_attribute * bus_attrs; |
65 | struct device_attribute * dev_attrs; | |
66 | struct driver_attribute * drv_attrs; | |
67 | ||
68 | int (*match)(struct device * dev, struct device_driver * drv); | |
312c004d KS |
69 | int (*uevent)(struct device *dev, char **envp, |
70 | int num_envp, char *buffer, int buffer_size); | |
594c8281 RK |
71 | int (*probe)(struct device * dev); |
72 | int (*remove)(struct device * dev); | |
73 | void (*shutdown)(struct device * dev); | |
7c8265f5 | 74 | |
7c8265f5 LT |
75 | int (*suspend)(struct device * dev, pm_message_t state); |
76 | int (*suspend_late)(struct device * dev, pm_message_t state); | |
77 | int (*resume_early)(struct device * dev); | |
78 | int (*resume)(struct device * dev); | |
b8c5cec2 KS |
79 | |
80 | unsigned int drivers_autoprobe:1; | |
1da177e4 LT |
81 | }; |
82 | ||
4a7fb636 | 83 | extern int __must_check bus_register(struct bus_type * bus); |
1da177e4 LT |
84 | extern void bus_unregister(struct bus_type * bus); |
85 | ||
f86db396 | 86 | extern int __must_check bus_rescan_devices(struct bus_type * bus); |
1da177e4 | 87 | |
1da177e4 LT |
88 | /* iterator helpers for buses */ |
89 | ||
90 | int bus_for_each_dev(struct bus_type * bus, struct device * start, void * data, | |
91 | int (*fn)(struct device *, void *)); | |
0edb5860 CH |
92 | struct device * bus_find_device(struct bus_type *bus, struct device *start, |
93 | void *data, int (*match)(struct device *, void *)); | |
1da177e4 | 94 | |
4a7fb636 AM |
95 | int __must_check bus_for_each_drv(struct bus_type *bus, |
96 | struct device_driver *start, void *data, | |
97 | int (*fn)(struct device_driver *, void *)); | |
1da177e4 | 98 | |
116af378 BH |
99 | /* |
100 | * Bus notifiers: Get notified of addition/removal of devices | |
101 | * and binding/unbinding of drivers to devices. | |
102 | * In the long run, it should be a replacement for the platform | |
103 | * notify hooks. | |
104 | */ | |
105 | struct notifier_block; | |
106 | ||
107 | extern int bus_register_notifier(struct bus_type *bus, | |
108 | struct notifier_block *nb); | |
109 | extern int bus_unregister_notifier(struct bus_type *bus, | |
110 | struct notifier_block *nb); | |
111 | ||
112 | /* All 4 notifers below get called with the target struct device * | |
113 | * as an argument. Note that those functions are likely to be called | |
114 | * with the device semaphore held in the core, so be careful. | |
115 | */ | |
116 | #define BUS_NOTIFY_ADD_DEVICE 0x00000001 /* device added */ | |
117 | #define BUS_NOTIFY_DEL_DEVICE 0x00000002 /* device removed */ | |
118 | #define BUS_NOTIFY_BOUND_DRIVER 0x00000003 /* driver bound to device */ | |
119 | #define BUS_NOTIFY_UNBIND_DRIVER 0x00000004 /* driver about to be | |
120 | unbound */ | |
121 | ||
1da177e4 | 122 | struct device_driver { |
8d790d74 | 123 | const char * name; |
1da177e4 LT |
124 | struct bus_type * bus; |
125 | ||
1da177e4 | 126 | struct kobject kobj; |
94e7b1c5 | 127 | struct klist klist_devices; |
38fdac3c | 128 | struct klist_node knode_bus; |
1da177e4 | 129 | |
8d790d74 | 130 | struct module * owner; |
f30c53a8 | 131 | const char * mod_name; /* used for built-in modules */ |
0c84ce26 | 132 | struct module_kobject * mkobj; |
1da177e4 LT |
133 | |
134 | int (*probe) (struct device * dev); | |
8d790d74 | 135 | int (*remove) (struct device * dev); |
1da177e4 | 136 | void (*shutdown) (struct device * dev); |
9480e307 RK |
137 | int (*suspend) (struct device * dev, pm_message_t state); |
138 | int (*resume) (struct device * dev); | |
1da177e4 LT |
139 | }; |
140 | ||
141 | ||
4a7fb636 | 142 | extern int __must_check driver_register(struct device_driver * drv); |
1da177e4 LT |
143 | extern void driver_unregister(struct device_driver * drv); |
144 | ||
145 | extern struct device_driver * get_driver(struct device_driver * drv); | |
146 | extern void put_driver(struct device_driver * drv); | |
147 | extern struct device_driver *driver_find(const char *name, struct bus_type *bus); | |
d779249e | 148 | extern int driver_probe_done(void); |
1da177e4 | 149 | |
405ae7d3 | 150 | /* sysfs interface for exporting driver attributes */ |
1da177e4 LT |
151 | |
152 | struct driver_attribute { | |
153 | struct attribute attr; | |
154 | ssize_t (*show)(struct device_driver *, char * buf); | |
155 | ssize_t (*store)(struct device_driver *, const char * buf, size_t count); | |
156 | }; | |
157 | ||
158 | #define DRIVER_ATTR(_name,_mode,_show,_store) \ | |
159 | struct driver_attribute driver_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
160 | ||
4a7fb636 AM |
161 | extern int __must_check driver_create_file(struct device_driver *, |
162 | struct driver_attribute *); | |
1da177e4 LT |
163 | extern void driver_remove_file(struct device_driver *, struct driver_attribute *); |
164 | ||
4a7fb636 AM |
165 | extern int __must_check driver_for_each_device(struct device_driver * drv, |
166 | struct device *start, void *data, | |
167 | int (*fn)(struct device *, void *)); | |
0edb5860 CH |
168 | struct device * driver_find_device(struct device_driver *drv, |
169 | struct device *start, void *data, | |
170 | int (*match)(struct device *, void *)); | |
fae3cd00 | 171 | |
1da177e4 LT |
172 | /* |
173 | * device classes | |
174 | */ | |
175 | struct class { | |
8d790d74 | 176 | const char * name; |
e9ba6365 | 177 | struct module * owner; |
1da177e4 | 178 | |
823bccfc | 179 | struct kset subsys; |
1da177e4 | 180 | struct list_head children; |
23681e47 | 181 | struct list_head devices; |
1da177e4 | 182 | struct list_head interfaces; |
86406245 | 183 | struct kset class_dirs; |
1da177e4 LT |
184 | struct semaphore sem; /* locks both the children and interfaces lists */ |
185 | ||
186 | struct class_attribute * class_attrs; | |
187 | struct class_device_attribute * class_dev_attrs; | |
2620efef | 188 | struct device_attribute * dev_attrs; |
1da177e4 | 189 | |
312c004d | 190 | int (*uevent)(struct class_device *dev, char **envp, |
1da177e4 | 191 | int num_envp, char *buffer, int buffer_size); |
2620efef GKH |
192 | int (*dev_uevent)(struct device *dev, char **envp, int num_envp, |
193 | char *buffer, int buffer_size); | |
1da177e4 LT |
194 | |
195 | void (*release)(struct class_device *dev); | |
196 | void (*class_release)(struct class *class); | |
2620efef | 197 | void (*dev_release)(struct device *dev); |
7c8265f5 LT |
198 | |
199 | int (*suspend)(struct device *, pm_message_t state); | |
200 | int (*resume)(struct device *); | |
1da177e4 LT |
201 | }; |
202 | ||
4a7fb636 | 203 | extern int __must_check class_register(struct class *); |
1da177e4 LT |
204 | extern void class_unregister(struct class *); |
205 | ||
1da177e4 LT |
206 | |
207 | struct class_attribute { | |
208 | struct attribute attr; | |
209 | ssize_t (*show)(struct class *, char * buf); | |
210 | ssize_t (*store)(struct class *, const char * buf, size_t count); | |
211 | }; | |
212 | ||
213 | #define CLASS_ATTR(_name,_mode,_show,_store) \ | |
214 | struct class_attribute class_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
215 | ||
4a7fb636 AM |
216 | extern int __must_check class_create_file(struct class *, |
217 | const struct class_attribute *); | |
1da177e4 LT |
218 | extern void class_remove_file(struct class *, const struct class_attribute *); |
219 | ||
a7fd6706 KS |
220 | struct class_device_attribute { |
221 | struct attribute attr; | |
222 | ssize_t (*show)(struct class_device *, char * buf); | |
223 | ssize_t (*store)(struct class_device *, const char * buf, size_t count); | |
224 | }; | |
225 | ||
226 | #define CLASS_DEVICE_ATTR(_name,_mode,_show,_store) \ | |
227 | struct class_device_attribute class_device_attr_##_name = \ | |
228 | __ATTR(_name,_mode,_show,_store) | |
229 | ||
4a7fb636 | 230 | extern int __must_check class_device_create_file(struct class_device *, |
a7fd6706 | 231 | const struct class_device_attribute *); |
1da177e4 | 232 | |
74be227f GKH |
233 | /** |
234 | * struct class_device - class devices | |
235 | * @class: pointer to the parent class for this class device. This is required. | |
236 | * @devt: for internal use by the driver core only. | |
237 | * @node: for internal use by the driver core only. | |
238 | * @kobj: for internal use by the driver core only. | |
1498221d | 239 | * @groups: optional additional groups to be created |
74be227f GKH |
240 | * @dev: if set, a symlink to the struct device is created in the sysfs |
241 | * directory for this struct class device. | |
242 | * @class_data: pointer to whatever you want to store here for this struct | |
243 | * class_device. Use class_get_devdata() and class_set_devdata() to get and | |
244 | * set this pointer. | |
245 | * @parent: pointer to a struct class_device that is the parent of this struct | |
246 | * class_device. If NULL, this class_device will show up at the root of the | |
247 | * struct class in sysfs (which is probably what you want to have happen.) | |
248 | * @release: pointer to a release function for this struct class_device. If | |
249 | * set, this will be called instead of the class specific release function. | |
250 | * Only use this if you want to override the default release function, like | |
251 | * when you are nesting class_device structures. | |
312c004d KS |
252 | * @uevent: pointer to a uevent function for this struct class_device. If |
253 | * set, this will be called instead of the class specific uevent function. | |
254 | * Only use this if you want to override the default uevent function, like | |
74be227f GKH |
255 | * when you are nesting class_device structures. |
256 | */ | |
1da177e4 LT |
257 | struct class_device { |
258 | struct list_head node; | |
259 | ||
260 | struct kobject kobj; | |
261 | struct class * class; /* required */ | |
262 | dev_t devt; /* dev_t, creates the sysfs "dev" */ | |
263 | struct device * dev; /* not necessary, but nice to have */ | |
264 | void * class_data; /* class-specific data */ | |
51d172d5 | 265 | struct class_device *parent; /* parent of this child device, if there is one */ |
1498221d | 266 | struct attribute_group ** groups; /* optional groups */ |
1da177e4 | 267 | |
51d172d5 | 268 | void (*release)(struct class_device *dev); |
312c004d | 269 | int (*uevent)(struct class_device *dev, char **envp, |
51d172d5 | 270 | int num_envp, char *buffer, int buffer_size); |
1da177e4 LT |
271 | char class_id[BUS_ID_SIZE]; /* unique to this class */ |
272 | }; | |
273 | ||
274 | static inline void * | |
275 | class_get_devdata (struct class_device *dev) | |
276 | { | |
277 | return dev->class_data; | |
278 | } | |
279 | ||
280 | static inline void | |
281 | class_set_devdata (struct class_device *dev, void *data) | |
282 | { | |
283 | dev->class_data = data; | |
284 | } | |
285 | ||
286 | ||
4a7fb636 | 287 | extern int __must_check class_device_register(struct class_device *); |
1da177e4 LT |
288 | extern void class_device_unregister(struct class_device *); |
289 | extern void class_device_initialize(struct class_device *); | |
4a7fb636 | 290 | extern int __must_check class_device_add(struct class_device *); |
1da177e4 LT |
291 | extern void class_device_del(struct class_device *); |
292 | ||
1da177e4 LT |
293 | extern struct class_device * class_device_get(struct class_device *); |
294 | extern void class_device_put(struct class_device *); | |
295 | ||
1da177e4 LT |
296 | extern void class_device_remove_file(struct class_device *, |
297 | const struct class_device_attribute *); | |
4a7fb636 | 298 | extern int __must_check class_device_create_bin_file(struct class_device *, |
1da177e4 LT |
299 | struct bin_attribute *); |
300 | extern void class_device_remove_bin_file(struct class_device *, | |
301 | struct bin_attribute *); | |
302 | ||
303 | struct class_interface { | |
304 | struct list_head node; | |
305 | struct class *class; | |
306 | ||
d8539d81 DT |
307 | int (*add) (struct class_device *, struct class_interface *); |
308 | void (*remove) (struct class_device *, struct class_interface *); | |
c47ed219 GKH |
309 | int (*add_dev) (struct device *, struct class_interface *); |
310 | void (*remove_dev) (struct device *, struct class_interface *); | |
1da177e4 LT |
311 | }; |
312 | ||
4a7fb636 | 313 | extern int __must_check class_interface_register(struct class_interface *); |
1da177e4 LT |
314 | extern void class_interface_unregister(struct class_interface *); |
315 | ||
ab7d7371 | 316 | extern struct class *class_create(struct module *owner, const char *name); |
e9ba6365 | 317 | extern void class_destroy(struct class *cls); |
51d172d5 GKH |
318 | extern struct class_device *class_device_create(struct class *cls, |
319 | struct class_device *parent, | |
320 | dev_t devt, | |
321 | struct device *device, | |
ddd5d35a | 322 | const char *fmt, ...) |
51d172d5 | 323 | __attribute__((format(printf,5,6))); |
e9ba6365 GKH |
324 | extern void class_device_destroy(struct class *cls, dev_t devt); |
325 | ||
414264f9 KS |
326 | /* |
327 | * The type of device, "struct device" is embedded in. A class | |
328 | * or bus can contain devices of different types | |
329 | * like "partitions" and "disks", "mouse" and "event". | |
330 | * This identifies the device type and carries type-specific | |
331 | * information, equivalent to the kobj_type of a kobject. | |
332 | * If "name" is specified, the uevent will contain it in | |
333 | * the DEVTYPE variable. | |
334 | */ | |
f9f852df | 335 | struct device_type { |
414264f9 | 336 | const char *name; |
621a1672 | 337 | struct attribute_group **groups; |
f9f852df KS |
338 | int (*uevent)(struct device *dev, char **envp, int num_envp, |
339 | char *buffer, int buffer_size); | |
340 | void (*release)(struct device *dev); | |
f89cbc39 DT |
341 | int (*suspend)(struct device * dev, pm_message_t state); |
342 | int (*resume)(struct device * dev); | |
f9f852df KS |
343 | }; |
344 | ||
a7fd6706 KS |
345 | /* interface for exporting device attributes */ |
346 | struct device_attribute { | |
347 | struct attribute attr; | |
348 | ssize_t (*show)(struct device *dev, struct device_attribute *attr, | |
349 | char *buf); | |
350 | ssize_t (*store)(struct device *dev, struct device_attribute *attr, | |
351 | const char *buf, size_t count); | |
352 | }; | |
353 | ||
354 | #define DEVICE_ATTR(_name,_mode,_show,_store) \ | |
355 | struct device_attribute dev_attr_##_name = __ATTR(_name,_mode,_show,_store) | |
356 | ||
4a7fb636 AM |
357 | extern int __must_check device_create_file(struct device *device, |
358 | struct device_attribute * entry); | |
a7fd6706 | 359 | extern void device_remove_file(struct device * dev, struct device_attribute * attr); |
2589f188 GKH |
360 | extern int __must_check device_create_bin_file(struct device *dev, |
361 | struct bin_attribute *attr); | |
362 | extern void device_remove_bin_file(struct device *dev, | |
363 | struct bin_attribute *attr); | |
523ded71 AS |
364 | extern int device_schedule_callback_owner(struct device *dev, |
365 | void (*func)(struct device *), struct module *owner); | |
366 | ||
367 | /* This is a macro to avoid include problems with THIS_MODULE */ | |
368 | #define device_schedule_callback(dev, func) \ | |
369 | device_schedule_callback_owner(dev, func, THIS_MODULE) | |
9ac7849e TH |
370 | |
371 | /* device resource management */ | |
372 | typedef void (*dr_release_t)(struct device *dev, void *res); | |
373 | typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data); | |
374 | ||
375 | #ifdef CONFIG_DEBUG_DEVRES | |
376 | extern void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp, | |
377 | const char *name); | |
378 | #define devres_alloc(release, size, gfp) \ | |
379 | __devres_alloc(release, size, gfp, #release) | |
380 | #else | |
381 | extern void * devres_alloc(dr_release_t release, size_t size, gfp_t gfp); | |
382 | #endif | |
383 | extern void devres_free(void *res); | |
384 | extern void devres_add(struct device *dev, void *res); | |
385 | extern void * devres_find(struct device *dev, dr_release_t release, | |
386 | dr_match_t match, void *match_data); | |
387 | extern void * devres_get(struct device *dev, void *new_res, | |
388 | dr_match_t match, void *match_data); | |
389 | extern void * devres_remove(struct device *dev, dr_release_t release, | |
390 | dr_match_t match, void *match_data); | |
391 | extern int devres_destroy(struct device *dev, dr_release_t release, | |
392 | dr_match_t match, void *match_data); | |
393 | ||
394 | /* devres group */ | |
395 | extern void * __must_check devres_open_group(struct device *dev, void *id, | |
396 | gfp_t gfp); | |
397 | extern void devres_close_group(struct device *dev, void *id); | |
398 | extern void devres_remove_group(struct device *dev, void *id); | |
399 | extern int devres_release_group(struct device *dev, void *id); | |
400 | ||
401 | /* managed kzalloc/kfree for device drivers, no kmalloc, always use kzalloc */ | |
402 | extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp); | |
403 | extern void devm_kfree(struct device *dev, void *p); | |
404 | ||
1da177e4 | 405 | struct device { |
36239577 PM |
406 | struct klist klist_children; |
407 | struct klist_node knode_parent; /* node in sibling list */ | |
94e7b1c5 | 408 | struct klist_node knode_driver; |
465c7a3a | 409 | struct klist_node knode_bus; |
49a4ec18 | 410 | struct device *parent; |
1da177e4 LT |
411 | |
412 | struct kobject kobj; | |
413 | char bus_id[BUS_ID_SIZE]; /* position on parent bus */ | |
f9f852df | 414 | struct device_type *type; |
f2eaae19 | 415 | unsigned is_registered:1; |
49a4ec18 | 416 | unsigned uevent_suppress:1; |
1da177e4 | 417 | |
af70316a PM |
418 | struct semaphore sem; /* semaphore to synchronize calls to |
419 | * its driver. | |
420 | */ | |
421 | ||
1da177e4 LT |
422 | struct bus_type * bus; /* type of bus device is on */ |
423 | struct device_driver *driver; /* which driver has allocated this | |
424 | device */ | |
425 | void *driver_data; /* data private to the driver */ | |
4e10d12a DSL |
426 | void *platform_data; /* Platform specific data, device |
427 | core doesn't touch it */ | |
1da177e4 LT |
428 | struct dev_pm_info power; |
429 | ||
87348136 CH |
430 | #ifdef CONFIG_NUMA |
431 | int numa_node; /* NUMA node this device is close to */ | |
432 | #endif | |
1da177e4 LT |
433 | u64 *dma_mask; /* dma mask (if dma'able device) */ |
434 | u64 coherent_dma_mask;/* Like dma_mask, but for | |
435 | alloc_coherent mappings as | |
436 | not all hardware supports | |
437 | 64 bit addresses for consistent | |
438 | allocations such descriptors. */ | |
439 | ||
440 | struct list_head dma_pools; /* dma pools (if dma'ble) */ | |
441 | ||
442 | struct dma_coherent_mem *dma_mem; /* internal for coherent mem | |
443 | override */ | |
c6dbaef2 BH |
444 | /* arch specific additions */ |
445 | struct dev_archdata archdata; | |
1da177e4 | 446 | |
9ac7849e TH |
447 | spinlock_t devres_lock; |
448 | struct list_head devres_head; | |
449 | ||
23681e47 GKH |
450 | /* class_device migration path */ |
451 | struct list_head node; | |
b7a3e813 | 452 | struct class *class; |
23681e47 | 453 | dev_t devt; /* dev_t, creates the sysfs "dev" */ |
de0ff00d | 454 | struct attribute_group **groups; /* optional groups */ |
23681e47 | 455 | |
1da177e4 LT |
456 | void (*release)(struct device * dev); |
457 | }; | |
458 | ||
87348136 CH |
459 | #ifdef CONFIG_NUMA |
460 | static inline int dev_to_node(struct device *dev) | |
461 | { | |
462 | return dev->numa_node; | |
463 | } | |
464 | static inline void set_dev_node(struct device *dev, int node) | |
465 | { | |
466 | dev->numa_node = node; | |
467 | } | |
468 | #else | |
469 | static inline int dev_to_node(struct device *dev) | |
470 | { | |
471 | return -1; | |
472 | } | |
473 | static inline void set_dev_node(struct device *dev, int node) | |
474 | { | |
475 | } | |
476 | #endif | |
477 | ||
1da177e4 LT |
478 | static inline void * |
479 | dev_get_drvdata (struct device *dev) | |
480 | { | |
481 | return dev->driver_data; | |
482 | } | |
483 | ||
484 | static inline void | |
485 | dev_set_drvdata (struct device *dev, void *data) | |
486 | { | |
487 | dev->driver_data = data; | |
488 | } | |
489 | ||
d305ef5d DR |
490 | static inline int device_is_registered(struct device *dev) |
491 | { | |
f2eaae19 | 492 | return dev->is_registered; |
d305ef5d DR |
493 | } |
494 | ||
1f21782e AB |
495 | void driver_init(void); |
496 | ||
1da177e4 LT |
497 | /* |
498 | * High level routines for use by the bus drivers | |
499 | */ | |
4a7fb636 | 500 | extern int __must_check device_register(struct device * dev); |
1da177e4 LT |
501 | extern void device_unregister(struct device * dev); |
502 | extern void device_initialize(struct device * dev); | |
4a7fb636 | 503 | extern int __must_check device_add(struct device * dev); |
1da177e4 | 504 | extern void device_del(struct device * dev); |
04fed361 | 505 | extern int device_for_each_child(struct device *, void *, |
1da177e4 | 506 | int (*fn)(struct device *, void *)); |
5ab69981 CH |
507 | extern struct device *device_find_child(struct device *, void *data, |
508 | int (*match)(struct device *, void *)); | |
a2de48ca | 509 | extern int device_rename(struct device *dev, char *new_name); |
8a82472f | 510 | extern int device_move(struct device *dev, struct device *new_parent); |
1da177e4 LT |
511 | |
512 | /* | |
513 | * Manual binding of a device to driver. See drivers/base/bus.c | |
514 | * for information on use. | |
515 | */ | |
f86db396 | 516 | extern int __must_check device_bind_driver(struct device *dev); |
1da177e4 | 517 | extern void device_release_driver(struct device * dev); |
4a7fb636 | 518 | extern int __must_check device_attach(struct device * dev); |
f86db396 AM |
519 | extern int __must_check driver_attach(struct device_driver *drv); |
520 | extern int __must_check device_reprobe(struct device *dev); | |
1da177e4 | 521 | |
23681e47 GKH |
522 | /* |
523 | * Easy functions for dynamically creating devices on the fly | |
524 | */ | |
525 | extern struct device *device_create(struct class *cls, struct device *parent, | |
5cbe5f8a | 526 | dev_t devt, const char *fmt, ...) |
23681e47 GKH |
527 | __attribute__((format(printf,4,5))); |
528 | extern void device_destroy(struct class *cls, dev_t devt); | |
1da177e4 | 529 | |
1da177e4 LT |
530 | /* |
531 | * Platform "fixup" functions - allow the platform to have their say | |
532 | * about devices and actions that the general device layer doesn't | |
533 | * know about. | |
534 | */ | |
535 | /* Notify platform of device discovery */ | |
536 | extern int (*platform_notify)(struct device * dev); | |
537 | ||
538 | extern int (*platform_notify_remove)(struct device * dev); | |
539 | ||
540 | ||
541 | /** | |
542 | * get_device - atomically increment the reference count for the device. | |
543 | * | |
544 | */ | |
545 | extern struct device * get_device(struct device * dev); | |
546 | extern void put_device(struct device * dev); | |
1da177e4 LT |
547 | |
548 | ||
116f232b | 549 | /* drivers/base/power/shutdown.c */ |
1da177e4 LT |
550 | extern void device_shutdown(void); |
551 | ||
58b3b71d RW |
552 | /* drivers/base/sys.c */ |
553 | extern void sysdev_shutdown(void); | |
554 | ||
1da177e4 LT |
555 | |
556 | /* drivers/base/firmware.c */ | |
823bccfc GKH |
557 | extern int __must_check firmware_register(struct kset *); |
558 | extern void firmware_unregister(struct kset *); | |
1da177e4 LT |
559 | |
560 | /* debugging and troubleshooting/diagnostic helpers. */ | |
3e95637a | 561 | extern const char *dev_driver_string(struct device *dev); |
1da177e4 | 562 | #define dev_printk(level, dev, format, arg...) \ |
3e95637a | 563 | printk(level "%s %s: " format , dev_driver_string(dev) , (dev)->bus_id , ## arg) |
1da177e4 LT |
564 | |
565 | #ifdef DEBUG | |
566 | #define dev_dbg(dev, format, arg...) \ | |
567 | dev_printk(KERN_DEBUG , dev , format , ## arg) | |
568 | #else | |
404d5b18 DW |
569 | static inline int __attribute__ ((format (printf, 2, 3))) |
570 | dev_dbg(struct device * dev, const char * fmt, ...) | |
571 | { | |
572 | return 0; | |
573 | } | |
1da177e4 LT |
574 | #endif |
575 | ||
aebdc3b4 DB |
576 | #ifdef VERBOSE_DEBUG |
577 | #define dev_vdbg dev_dbg | |
578 | #else | |
579 | static inline int __attribute__ ((format (printf, 2, 3))) | |
580 | dev_vdbg(struct device * dev, const char * fmt, ...) | |
581 | { | |
582 | return 0; | |
583 | } | |
584 | #endif | |
585 | ||
1da177e4 LT |
586 | #define dev_err(dev, format, arg...) \ |
587 | dev_printk(KERN_ERR , dev , format , ## arg) | |
588 | #define dev_info(dev, format, arg...) \ | |
589 | dev_printk(KERN_INFO , dev , format , ## arg) | |
590 | #define dev_warn(dev, format, arg...) \ | |
591 | dev_printk(KERN_WARNING , dev , format , ## arg) | |
4f2928d0 TS |
592 | #define dev_notice(dev, format, arg...) \ |
593 | dev_printk(KERN_NOTICE , dev , format , ## arg) | |
1da177e4 LT |
594 | |
595 | /* Create alias, so I can be autoloaded. */ | |
596 | #define MODULE_ALIAS_CHARDEV(major,minor) \ | |
597 | MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor)) | |
598 | #define MODULE_ALIAS_CHARDEV_MAJOR(major) \ | |
599 | MODULE_ALIAS("char-major-" __stringify(major) "-*") | |
600 | #endif /* _DEVICE_H_ */ |