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> |
d2a3b914 | 19 | #include <linux/lockdep.h> |
4a7fb636 | 20 | #include <linux/compiler.h> |
1da177e4 LT |
21 | #include <linux/types.h> |
22 | #include <linux/module.h> | |
23 | #include <linux/pm.h> | |
6188e10d | 24 | #include <linux/semaphore.h> |
1da177e4 | 25 | #include <asm/atomic.h> |
c6dbaef2 | 26 | #include <asm/device.h> |
1da177e4 | 27 | |
aab0de24 | 28 | #define BUS_ID_SIZE 20 |
1da177e4 | 29 | |
1da177e4 LT |
30 | struct device; |
31 | struct device_driver; | |
e5dd1278 | 32 | struct driver_private; |
1da177e4 | 33 | struct class; |
7c71448b | 34 | struct class_private; |
b8c5cec2 | 35 | struct bus_type; |
c6f7e72a | 36 | struct bus_type_private; |
b8c5cec2 KS |
37 | |
38 | struct bus_attribute { | |
39 | struct attribute attr; | |
d462943a GKH |
40 | ssize_t (*show)(struct bus_type *bus, char *buf); |
41 | ssize_t (*store)(struct bus_type *bus, const char *buf, size_t count); | |
b8c5cec2 KS |
42 | }; |
43 | ||
d462943a GKH |
44 | #define BUS_ATTR(_name, _mode, _show, _store) \ |
45 | struct bus_attribute bus_attr_##_name = __ATTR(_name, _mode, _show, _store) | |
b8c5cec2 KS |
46 | |
47 | extern int __must_check bus_create_file(struct bus_type *, | |
48 | struct bus_attribute *); | |
49 | extern void bus_remove_file(struct bus_type *, struct bus_attribute *); | |
1da177e4 LT |
50 | |
51 | struct bus_type { | |
d462943a GKH |
52 | const char *name; |
53 | struct bus_attribute *bus_attrs; | |
54 | struct device_attribute *dev_attrs; | |
55 | struct driver_attribute *drv_attrs; | |
56 | ||
57 | int (*match)(struct device *dev, struct device_driver *drv); | |
58 | int (*uevent)(struct device *dev, struct kobj_uevent_env *env); | |
59 | int (*probe)(struct device *dev); | |
60 | int (*remove)(struct device *dev); | |
61 | void (*shutdown)(struct device *dev); | |
62 | ||
63 | int (*suspend)(struct device *dev, pm_message_t state); | |
64 | int (*suspend_late)(struct device *dev, pm_message_t state); | |
65 | int (*resume_early)(struct device *dev); | |
66 | int (*resume)(struct device *dev); | |
b8c5cec2 | 67 | |
1eede070 RW |
68 | struct pm_ext_ops *pm; |
69 | ||
c6f7e72a | 70 | struct bus_type_private *p; |
1da177e4 LT |
71 | }; |
72 | ||
d462943a GKH |
73 | extern int __must_check bus_register(struct bus_type *bus); |
74 | extern void bus_unregister(struct bus_type *bus); | |
1da177e4 | 75 | |
d462943a | 76 | extern int __must_check bus_rescan_devices(struct bus_type *bus); |
1da177e4 | 77 | |
1da177e4 LT |
78 | /* iterator helpers for buses */ |
79 | ||
d462943a GKH |
80 | int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data, |
81 | int (*fn)(struct device *dev, void *data)); | |
82 | struct device *bus_find_device(struct bus_type *bus, struct device *start, | |
83 | void *data, | |
84 | int (*match)(struct device *dev, void *data)); | |
1f9ffc04 GKH |
85 | struct device *bus_find_device_by_name(struct bus_type *bus, |
86 | struct device *start, | |
87 | const char *name); | |
1da177e4 | 88 | |
4a7fb636 | 89 | int __must_check bus_for_each_drv(struct bus_type *bus, |
d462943a GKH |
90 | struct device_driver *start, void *data, |
91 | int (*fn)(struct device_driver *, void *)); | |
1da177e4 | 92 | |
116af378 BH |
93 | /* |
94 | * Bus notifiers: Get notified of addition/removal of devices | |
95 | * and binding/unbinding of drivers to devices. | |
96 | * In the long run, it should be a replacement for the platform | |
97 | * notify hooks. | |
98 | */ | |
99 | struct notifier_block; | |
100 | ||
101 | extern int bus_register_notifier(struct bus_type *bus, | |
102 | struct notifier_block *nb); | |
103 | extern int bus_unregister_notifier(struct bus_type *bus, | |
104 | struct notifier_block *nb); | |
105 | ||
106 | /* All 4 notifers below get called with the target struct device * | |
107 | * as an argument. Note that those functions are likely to be called | |
108 | * with the device semaphore held in the core, so be careful. | |
109 | */ | |
110 | #define BUS_NOTIFY_ADD_DEVICE 0x00000001 /* device added */ | |
111 | #define BUS_NOTIFY_DEL_DEVICE 0x00000002 /* device removed */ | |
112 | #define BUS_NOTIFY_BOUND_DRIVER 0x00000003 /* driver bound to device */ | |
113 | #define BUS_NOTIFY_UNBIND_DRIVER 0x00000004 /* driver about to be | |
114 | unbound */ | |
115 | ||
0fed80f7 | 116 | extern struct kset *bus_get_kset(struct bus_type *bus); |
b249072e | 117 | extern struct klist *bus_get_device_klist(struct bus_type *bus); |
0fed80f7 | 118 | |
1da177e4 | 119 | struct device_driver { |
e5dd1278 GKH |
120 | const char *name; |
121 | struct bus_type *bus; | |
1da177e4 | 122 | |
e5dd1278 GKH |
123 | struct module *owner; |
124 | const char *mod_name; /* used for built-in modules */ | |
1da177e4 | 125 | |
d462943a GKH |
126 | int (*probe) (struct device *dev); |
127 | int (*remove) (struct device *dev); | |
128 | void (*shutdown) (struct device *dev); | |
129 | int (*suspend) (struct device *dev, pm_message_t state); | |
130 | int (*resume) (struct device *dev); | |
57c74534 | 131 | struct attribute_group **groups; |
e5dd1278 | 132 | |
1eede070 RW |
133 | struct pm_ops *pm; |
134 | ||
e5dd1278 | 135 | struct driver_private *p; |
1da177e4 LT |
136 | }; |
137 | ||
138 | ||
d462943a GKH |
139 | extern int __must_check driver_register(struct device_driver *drv); |
140 | extern void driver_unregister(struct device_driver *drv); | |
1da177e4 | 141 | |
d462943a GKH |
142 | extern struct device_driver *get_driver(struct device_driver *drv); |
143 | extern void put_driver(struct device_driver *drv); | |
144 | extern struct device_driver *driver_find(const char *name, | |
145 | struct bus_type *bus); | |
d779249e | 146 | extern int driver_probe_done(void); |
1da177e4 | 147 | |
405ae7d3 | 148 | /* sysfs interface for exporting driver attributes */ |
1da177e4 LT |
149 | |
150 | struct driver_attribute { | |
d462943a GKH |
151 | struct attribute attr; |
152 | ssize_t (*show)(struct device_driver *driver, char *buf); | |
153 | ssize_t (*store)(struct device_driver *driver, const char *buf, | |
154 | size_t count); | |
1da177e4 LT |
155 | }; |
156 | ||
d462943a GKH |
157 | #define DRIVER_ATTR(_name, _mode, _show, _store) \ |
158 | struct driver_attribute driver_attr_##_name = \ | |
159 | __ATTR(_name, _mode, _show, _store) | |
1da177e4 | 160 | |
d462943a GKH |
161 | extern int __must_check driver_create_file(struct device_driver *driver, |
162 | struct driver_attribute *attr); | |
163 | extern void driver_remove_file(struct device_driver *driver, | |
164 | struct driver_attribute *attr); | |
1da177e4 | 165 | |
cbe9c595 GKH |
166 | extern int __must_check driver_add_kobj(struct device_driver *drv, |
167 | struct kobject *kobj, | |
168 | const char *fmt, ...); | |
169 | ||
d462943a GKH |
170 | extern int __must_check driver_for_each_device(struct device_driver *drv, |
171 | struct device *start, | |
172 | void *data, | |
173 | int (*fn)(struct device *dev, | |
174 | void *)); | |
175 | struct device *driver_find_device(struct device_driver *drv, | |
176 | struct device *start, void *data, | |
177 | int (*match)(struct device *dev, void *data)); | |
fae3cd00 | 178 | |
1da177e4 LT |
179 | /* |
180 | * device classes | |
181 | */ | |
182 | struct class { | |
d462943a GKH |
183 | const char *name; |
184 | struct module *owner; | |
1da177e4 | 185 | |
d462943a | 186 | struct class_attribute *class_attrs; |
d462943a | 187 | struct device_attribute *dev_attrs; |
e105b8bf | 188 | struct kobject *dev_kobj; |
1da177e4 | 189 | |
d462943a | 190 | int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env); |
1da177e4 | 191 | |
d462943a GKH |
192 | void (*class_release)(struct class *class); |
193 | void (*dev_release)(struct device *dev); | |
7c8265f5 | 194 | |
d462943a GKH |
195 | int (*suspend)(struct device *dev, pm_message_t state); |
196 | int (*resume)(struct device *dev); | |
1eede070 RW |
197 | |
198 | struct pm_ops *pm; | |
7c71448b | 199 | struct class_private *p; |
1da177e4 LT |
200 | }; |
201 | ||
e105b8bf DW |
202 | extern struct kobject *sysfs_dev_block_kobj; |
203 | extern struct kobject *sysfs_dev_char_kobj; | |
d2a3b914 MW |
204 | extern int __must_check __class_register(struct class *class, |
205 | struct lock_class_key *key); | |
d462943a | 206 | extern void class_unregister(struct class *class); |
d2a3b914 MW |
207 | |
208 | /* This is a #define to keep the compiler from merging different | |
209 | * instances of the __key variable */ | |
210 | #define class_register(class) \ | |
211 | ({ \ | |
212 | static struct lock_class_key __key; \ | |
213 | __class_register(class, &__key); \ | |
214 | }) | |
215 | ||
93562b53 GKH |
216 | extern int class_for_each_device(struct class *class, struct device *start, |
217 | void *data, | |
fd04897b | 218 | int (*fn)(struct device *dev, void *data)); |
695794ae GKH |
219 | extern struct device *class_find_device(struct class *class, |
220 | struct device *start, void *data, | |
fd04897b | 221 | int (*match)(struct device *, void *)); |
1da177e4 LT |
222 | |
223 | struct class_attribute { | |
d462943a GKH |
224 | struct attribute attr; |
225 | ssize_t (*show)(struct class *class, char *buf); | |
226 | ssize_t (*store)(struct class *class, const char *buf, size_t count); | |
1da177e4 LT |
227 | }; |
228 | ||
d462943a GKH |
229 | #define CLASS_ATTR(_name, _mode, _show, _store) \ |
230 | struct class_attribute class_attr_##_name = __ATTR(_name, _mode, _show, _store) | |
1da177e4 | 231 | |
d462943a GKH |
232 | extern int __must_check class_create_file(struct class *class, |
233 | const struct class_attribute *attr); | |
234 | extern void class_remove_file(struct class *class, | |
235 | const struct class_attribute *attr); | |
1da177e4 | 236 | |
1da177e4 LT |
237 | struct class_interface { |
238 | struct list_head node; | |
239 | struct class *class; | |
240 | ||
c47ed219 GKH |
241 | int (*add_dev) (struct device *, struct class_interface *); |
242 | void (*remove_dev) (struct device *, struct class_interface *); | |
1da177e4 LT |
243 | }; |
244 | ||
4a7fb636 | 245 | extern int __must_check class_interface_register(struct class_interface *); |
1da177e4 LT |
246 | extern void class_interface_unregister(struct class_interface *); |
247 | ||
d2a3b914 MW |
248 | extern struct class * __must_check __class_create(struct module *owner, |
249 | const char *name, | |
250 | struct lock_class_key *key); | |
e9ba6365 | 251 | extern void class_destroy(struct class *cls); |
e9ba6365 | 252 | |
d2a3b914 MW |
253 | /* This is a #define to keep the compiler from merging different |
254 | * instances of the __key variable */ | |
255 | #define class_create(owner, name) \ | |
256 | ({ \ | |
257 | static struct lock_class_key __key; \ | |
258 | __class_create(owner, name, &__key); \ | |
259 | }) | |
260 | ||
414264f9 KS |
261 | /* |
262 | * The type of device, "struct device" is embedded in. A class | |
263 | * or bus can contain devices of different types | |
264 | * like "partitions" and "disks", "mouse" and "event". | |
265 | * This identifies the device type and carries type-specific | |
266 | * information, equivalent to the kobj_type of a kobject. | |
267 | * If "name" is specified, the uevent will contain it in | |
268 | * the DEVTYPE variable. | |
269 | */ | |
f9f852df | 270 | struct device_type { |
414264f9 | 271 | const char *name; |
621a1672 | 272 | struct attribute_group **groups; |
7eff2e7a | 273 | int (*uevent)(struct device *dev, struct kobj_uevent_env *env); |
f9f852df | 274 | void (*release)(struct device *dev); |
1eede070 | 275 | |
d462943a GKH |
276 | int (*suspend)(struct device *dev, pm_message_t state); |
277 | int (*resume)(struct device *dev); | |
1eede070 RW |
278 | |
279 | struct pm_ops *pm; | |
f9f852df KS |
280 | }; |
281 | ||
a7fd6706 KS |
282 | /* interface for exporting device attributes */ |
283 | struct device_attribute { | |
284 | struct attribute attr; | |
285 | ssize_t (*show)(struct device *dev, struct device_attribute *attr, | |
286 | char *buf); | |
287 | ssize_t (*store)(struct device *dev, struct device_attribute *attr, | |
288 | const char *buf, size_t count); | |
289 | }; | |
290 | ||
d462943a GKH |
291 | #define DEVICE_ATTR(_name, _mode, _show, _store) \ |
292 | struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store) | |
a7fd6706 | 293 | |
4a7fb636 | 294 | extern int __must_check device_create_file(struct device *device, |
d462943a GKH |
295 | struct device_attribute *entry); |
296 | extern void device_remove_file(struct device *dev, | |
297 | struct device_attribute *attr); | |
2589f188 GKH |
298 | extern int __must_check device_create_bin_file(struct device *dev, |
299 | struct bin_attribute *attr); | |
300 | extern void device_remove_bin_file(struct device *dev, | |
301 | struct bin_attribute *attr); | |
523ded71 | 302 | extern int device_schedule_callback_owner(struct device *dev, |
d462943a | 303 | void (*func)(struct device *dev), struct module *owner); |
523ded71 AS |
304 | |
305 | /* This is a macro to avoid include problems with THIS_MODULE */ | |
306 | #define device_schedule_callback(dev, func) \ | |
307 | device_schedule_callback_owner(dev, func, THIS_MODULE) | |
9ac7849e TH |
308 | |
309 | /* device resource management */ | |
310 | typedef void (*dr_release_t)(struct device *dev, void *res); | |
311 | typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data); | |
312 | ||
313 | #ifdef CONFIG_DEBUG_DEVRES | |
d462943a | 314 | extern void *__devres_alloc(dr_release_t release, size_t size, gfp_t gfp, |
9ac7849e TH |
315 | const char *name); |
316 | #define devres_alloc(release, size, gfp) \ | |
317 | __devres_alloc(release, size, gfp, #release) | |
318 | #else | |
d462943a | 319 | extern void *devres_alloc(dr_release_t release, size_t size, gfp_t gfp); |
9ac7849e TH |
320 | #endif |
321 | extern void devres_free(void *res); | |
322 | extern void devres_add(struct device *dev, void *res); | |
d462943a | 323 | extern void *devres_find(struct device *dev, dr_release_t release, |
9ac7849e | 324 | dr_match_t match, void *match_data); |
d462943a GKH |
325 | extern void *devres_get(struct device *dev, void *new_res, |
326 | dr_match_t match, void *match_data); | |
327 | extern void *devres_remove(struct device *dev, dr_release_t release, | |
328 | dr_match_t match, void *match_data); | |
9ac7849e TH |
329 | extern int devres_destroy(struct device *dev, dr_release_t release, |
330 | dr_match_t match, void *match_data); | |
331 | ||
332 | /* devres group */ | |
333 | extern void * __must_check devres_open_group(struct device *dev, void *id, | |
334 | gfp_t gfp); | |
335 | extern void devres_close_group(struct device *dev, void *id); | |
336 | extern void devres_remove_group(struct device *dev, void *id); | |
337 | extern int devres_release_group(struct device *dev, void *id); | |
338 | ||
339 | /* managed kzalloc/kfree for device drivers, no kmalloc, always use kzalloc */ | |
340 | extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp); | |
341 | extern void devm_kfree(struct device *dev, void *p); | |
342 | ||
6b7b6510 FT |
343 | struct device_dma_parameters { |
344 | /* | |
345 | * a low level driver may set these to teach IOMMU code about | |
346 | * sg limitations. | |
347 | */ | |
348 | unsigned int max_segment_size; | |
349 | unsigned long segment_boundary_mask; | |
350 | }; | |
351 | ||
1da177e4 | 352 | struct device { |
36239577 | 353 | struct klist klist_children; |
d462943a | 354 | struct klist_node knode_parent; /* node in sibling list */ |
94e7b1c5 | 355 | struct klist_node knode_driver; |
465c7a3a | 356 | struct klist_node knode_bus; |
49a4ec18 | 357 | struct device *parent; |
1da177e4 LT |
358 | |
359 | struct kobject kobj; | |
360 | char bus_id[BUS_ID_SIZE]; /* position on parent bus */ | |
f9f852df | 361 | struct device_type *type; |
49a4ec18 | 362 | unsigned uevent_suppress:1; |
1da177e4 | 363 | |
af70316a | 364 | struct semaphore sem; /* semaphore to synchronize calls to |
365 | * its driver. | |
366 | */ | |
367 | ||
d462943a | 368 | struct bus_type *bus; /* type of bus device is on */ |
1da177e4 LT |
369 | struct device_driver *driver; /* which driver has allocated this |
370 | device */ | |
371 | void *driver_data; /* data private to the driver */ | |
4e10d12a DSL |
372 | void *platform_data; /* Platform specific data, device |
373 | core doesn't touch it */ | |
1da177e4 LT |
374 | struct dev_pm_info power; |
375 | ||
87348136 CH |
376 | #ifdef CONFIG_NUMA |
377 | int numa_node; /* NUMA node this device is close to */ | |
378 | #endif | |
1da177e4 LT |
379 | u64 *dma_mask; /* dma mask (if dma'able device) */ |
380 | u64 coherent_dma_mask;/* Like dma_mask, but for | |
381 | alloc_coherent mappings as | |
382 | not all hardware supports | |
383 | 64 bit addresses for consistent | |
384 | allocations such descriptors. */ | |
385 | ||
6b7b6510 FT |
386 | struct device_dma_parameters *dma_parms; |
387 | ||
1da177e4 LT |
388 | struct list_head dma_pools; /* dma pools (if dma'ble) */ |
389 | ||
390 | struct dma_coherent_mem *dma_mem; /* internal for coherent mem | |
391 | override */ | |
c6dbaef2 BH |
392 | /* arch specific additions */ |
393 | struct dev_archdata archdata; | |
1da177e4 | 394 | |
9ac7849e TH |
395 | spinlock_t devres_lock; |
396 | struct list_head devres_head; | |
397 | ||
23681e47 | 398 | struct list_head node; |
b7a3e813 | 399 | struct class *class; |
d462943a | 400 | dev_t devt; /* dev_t, creates the sysfs "dev" */ |
de0ff00d | 401 | struct attribute_group **groups; /* optional groups */ |
23681e47 | 402 | |
d462943a | 403 | void (*release)(struct device *dev); |
1da177e4 LT |
404 | }; |
405 | ||
9a3df1f7 AS |
406 | /* Get the wakeup routines, which depend on struct device */ |
407 | #include <linux/pm_wakeup.h> | |
408 | ||
06916639 KS |
409 | static inline const char *dev_name(struct device *dev) |
410 | { | |
411 | /* will be changed into kobject_name(&dev->kobj) in the near future */ | |
412 | return dev->bus_id; | |
413 | } | |
414 | ||
413c239f SR |
415 | extern int dev_set_name(struct device *dev, const char *name, ...) |
416 | __attribute__((format(printf, 2, 3))); | |
417 | ||
87348136 CH |
418 | #ifdef CONFIG_NUMA |
419 | static inline int dev_to_node(struct device *dev) | |
420 | { | |
421 | return dev->numa_node; | |
422 | } | |
423 | static inline void set_dev_node(struct device *dev, int node) | |
424 | { | |
425 | dev->numa_node = node; | |
426 | } | |
427 | #else | |
428 | static inline int dev_to_node(struct device *dev) | |
429 | { | |
430 | return -1; | |
431 | } | |
432 | static inline void set_dev_node(struct device *dev, int node) | |
433 | { | |
434 | } | |
435 | #endif | |
436 | ||
d462943a | 437 | static inline void *dev_get_drvdata(struct device *dev) |
1da177e4 LT |
438 | { |
439 | return dev->driver_data; | |
440 | } | |
441 | ||
d462943a | 442 | static inline void dev_set_drvdata(struct device *dev, void *data) |
1da177e4 LT |
443 | { |
444 | dev->driver_data = data; | |
445 | } | |
446 | ||
d305ef5d DR |
447 | static inline int device_is_registered(struct device *dev) |
448 | { | |
3f62e570 | 449 | return dev->kobj.state_in_sysfs; |
d305ef5d DR |
450 | } |
451 | ||
1f21782e AB |
452 | void driver_init(void); |
453 | ||
1da177e4 LT |
454 | /* |
455 | * High level routines for use by the bus drivers | |
456 | */ | |
d462943a GKH |
457 | extern int __must_check device_register(struct device *dev); |
458 | extern void device_unregister(struct device *dev); | |
459 | extern void device_initialize(struct device *dev); | |
460 | extern int __must_check device_add(struct device *dev); | |
461 | extern void device_del(struct device *dev); | |
462 | extern int device_for_each_child(struct device *dev, void *data, | |
463 | int (*fn)(struct device *dev, void *data)); | |
464 | extern struct device *device_find_child(struct device *dev, void *data, | |
465 | int (*match)(struct device *dev, void *data)); | |
a2de48ca | 466 | extern int device_rename(struct device *dev, char *new_name); |
8a82472f | 467 | extern int device_move(struct device *dev, struct device *new_parent); |
1da177e4 LT |
468 | |
469 | /* | |
470 | * Manual binding of a device to driver. See drivers/base/bus.c | |
471 | * for information on use. | |
472 | */ | |
f86db396 | 473 | extern int __must_check device_bind_driver(struct device *dev); |
d462943a GKH |
474 | extern void device_release_driver(struct device *dev); |
475 | extern int __must_check device_attach(struct device *dev); | |
f86db396 AM |
476 | extern int __must_check driver_attach(struct device_driver *drv); |
477 | extern int __must_check device_reprobe(struct device *dev); | |
1da177e4 | 478 | |
23681e47 GKH |
479 | /* |
480 | * Easy functions for dynamically creating devices on the fly | |
481 | */ | |
8882b394 GKH |
482 | extern struct device *device_create_vargs(struct class *cls, |
483 | struct device *parent, | |
484 | dev_t devt, | |
485 | void *drvdata, | |
486 | const char *fmt, | |
487 | va_list vargs); | |
4e106739 GKH |
488 | extern struct device *device_create(struct class *cls, struct device *parent, |
489 | dev_t devt, void *drvdata, | |
490 | const char *fmt, ...) | |
8882b394 | 491 | __attribute__((format(printf, 5, 6))); |
4e106739 | 492 | #define device_create_drvdata device_create |
23681e47 | 493 | extern void device_destroy(struct class *cls, dev_t devt); |
1da177e4 | 494 | |
1da177e4 LT |
495 | /* |
496 | * Platform "fixup" functions - allow the platform to have their say | |
497 | * about devices and actions that the general device layer doesn't | |
498 | * know about. | |
499 | */ | |
500 | /* Notify platform of device discovery */ | |
d462943a | 501 | extern int (*platform_notify)(struct device *dev); |
1da177e4 | 502 | |
d462943a | 503 | extern int (*platform_notify_remove)(struct device *dev); |
1da177e4 LT |
504 | |
505 | ||
506 | /** | |
507 | * get_device - atomically increment the reference count for the device. | |
508 | * | |
509 | */ | |
d462943a GKH |
510 | extern struct device *get_device(struct device *dev); |
511 | extern void put_device(struct device *dev); | |
1da177e4 LT |
512 | |
513 | ||
116f232b | 514 | /* drivers/base/power/shutdown.c */ |
1da177e4 LT |
515 | extern void device_shutdown(void); |
516 | ||
58b3b71d RW |
517 | /* drivers/base/sys.c */ |
518 | extern void sysdev_shutdown(void); | |
519 | ||
1da177e4 | 520 | /* debugging and troubleshooting/diagnostic helpers. */ |
3e95637a | 521 | extern const char *dev_driver_string(struct device *dev); |
1da177e4 | 522 | #define dev_printk(level, dev, format, arg...) \ |
d462943a | 523 | printk(level "%s %s: " format , dev_driver_string(dev) , \ |
06916639 | 524 | dev_name(dev) , ## arg) |
1da177e4 | 525 | |
7b8712e5 EM |
526 | #define dev_emerg(dev, format, arg...) \ |
527 | dev_printk(KERN_EMERG , dev , format , ## arg) | |
528 | #define dev_alert(dev, format, arg...) \ | |
529 | dev_printk(KERN_ALERT , dev , format , ## arg) | |
530 | #define dev_crit(dev, format, arg...) \ | |
531 | dev_printk(KERN_CRIT , dev , format , ## arg) | |
532 | #define dev_err(dev, format, arg...) \ | |
533 | dev_printk(KERN_ERR , dev , format , ## arg) | |
534 | #define dev_warn(dev, format, arg...) \ | |
535 | dev_printk(KERN_WARNING , dev , format , ## arg) | |
536 | #define dev_notice(dev, format, arg...) \ | |
537 | dev_printk(KERN_NOTICE , dev , format , ## arg) | |
538 | #define dev_info(dev, format, arg...) \ | |
539 | dev_printk(KERN_INFO , dev , format , ## arg) | |
540 | ||
1da177e4 LT |
541 | #ifdef DEBUG |
542 | #define dev_dbg(dev, format, arg...) \ | |
543 | dev_printk(KERN_DEBUG , dev , format , ## arg) | |
544 | #else | |
1429db83 JP |
545 | #define dev_dbg(dev, format, arg...) \ |
546 | ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; }) | |
1da177e4 LT |
547 | #endif |
548 | ||
aebdc3b4 DB |
549 | #ifdef VERBOSE_DEBUG |
550 | #define dev_vdbg dev_dbg | |
551 | #else | |
1429db83 JP |
552 | |
553 | #define dev_vdbg(dev, format, arg...) \ | |
554 | ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; }) | |
aebdc3b4 DB |
555 | #endif |
556 | ||
1da177e4 LT |
557 | /* Create alias, so I can be autoloaded. */ |
558 | #define MODULE_ALIAS_CHARDEV(major,minor) \ | |
559 | MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor)) | |
560 | #define MODULE_ALIAS_CHARDEV_MAJOR(major) \ | |
561 | MODULE_ALIAS("char-major-" __stringify(major) "-*") | |
562 | #endif /* _DEVICE_H_ */ |