Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * The input core | |
3 | * | |
4 | * Copyright (c) 1999-2002 Vojtech Pavlik | |
5 | */ | |
6 | ||
7 | /* | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License version 2 as published by | |
10 | * the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/sched.h> | |
15 | #include <linux/smp_lock.h> | |
16 | #include <linux/input.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/random.h> | |
19 | #include <linux/major.h> | |
20 | #include <linux/proc_fs.h> | |
969b21cd | 21 | #include <linux/seq_file.h> |
1da177e4 LT |
22 | #include <linux/interrupt.h> |
23 | #include <linux/poll.h> | |
24 | #include <linux/device.h> | |
e676c232 | 25 | #include <linux/mutex.h> |
1da177e4 LT |
26 | |
27 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
28 | MODULE_DESCRIPTION("Input core"); | |
29 | MODULE_LICENSE("GPL"); | |
30 | ||
d19fbe8a | 31 | EXPORT_SYMBOL(input_allocate_device); |
1da177e4 LT |
32 | EXPORT_SYMBOL(input_register_device); |
33 | EXPORT_SYMBOL(input_unregister_device); | |
34 | EXPORT_SYMBOL(input_register_handler); | |
35 | EXPORT_SYMBOL(input_unregister_handler); | |
36 | EXPORT_SYMBOL(input_grab_device); | |
37 | EXPORT_SYMBOL(input_release_device); | |
38 | EXPORT_SYMBOL(input_open_device); | |
39 | EXPORT_SYMBOL(input_close_device); | |
40 | EXPORT_SYMBOL(input_accept_process); | |
41 | EXPORT_SYMBOL(input_flush_device); | |
42 | EXPORT_SYMBOL(input_event); | |
ea9f240b | 43 | EXPORT_SYMBOL_GPL(input_class); |
1da177e4 LT |
44 | |
45 | #define INPUT_DEVICES 256 | |
46 | ||
47 | static LIST_HEAD(input_dev_list); | |
48 | static LIST_HEAD(input_handler_list); | |
49 | ||
50 | static struct input_handler *input_table[8]; | |
51 | ||
1da177e4 LT |
52 | void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) |
53 | { | |
54 | struct input_handle *handle; | |
55 | ||
56 | if (type > EV_MAX || !test_bit(type, dev->evbit)) | |
57 | return; | |
58 | ||
59 | add_input_randomness(type, code, value); | |
60 | ||
61 | switch (type) { | |
62 | ||
63 | case EV_SYN: | |
64 | switch (code) { | |
65 | case SYN_CONFIG: | |
66 | if (dev->event) dev->event(dev, type, code, value); | |
67 | break; | |
68 | ||
69 | case SYN_REPORT: | |
70 | if (dev->sync) return; | |
71 | dev->sync = 1; | |
72 | break; | |
73 | } | |
74 | break; | |
75 | ||
76 | case EV_KEY: | |
77 | ||
78 | if (code > KEY_MAX || !test_bit(code, dev->keybit) || !!test_bit(code, dev->key) == value) | |
79 | return; | |
80 | ||
81 | if (value == 2) | |
82 | break; | |
83 | ||
84 | change_bit(code, dev->key); | |
85 | ||
86 | if (test_bit(EV_REP, dev->evbit) && dev->rep[REP_PERIOD] && dev->rep[REP_DELAY] && dev->timer.data && value) { | |
87 | dev->repeat_key = code; | |
88 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(dev->rep[REP_DELAY])); | |
89 | } | |
90 | ||
91 | break; | |
92 | ||
31581066 RP |
93 | case EV_SW: |
94 | ||
95 | if (code > SW_MAX || !test_bit(code, dev->swbit) || !!test_bit(code, dev->sw) == value) | |
96 | return; | |
97 | ||
98 | change_bit(code, dev->sw); | |
99 | ||
100 | break; | |
101 | ||
1da177e4 LT |
102 | case EV_ABS: |
103 | ||
104 | if (code > ABS_MAX || !test_bit(code, dev->absbit)) | |
105 | return; | |
106 | ||
107 | if (dev->absfuzz[code]) { | |
108 | if ((value > dev->abs[code] - (dev->absfuzz[code] >> 1)) && | |
109 | (value < dev->abs[code] + (dev->absfuzz[code] >> 1))) | |
110 | return; | |
111 | ||
112 | if ((value > dev->abs[code] - dev->absfuzz[code]) && | |
113 | (value < dev->abs[code] + dev->absfuzz[code])) | |
114 | value = (dev->abs[code] * 3 + value) >> 2; | |
115 | ||
116 | if ((value > dev->abs[code] - (dev->absfuzz[code] << 1)) && | |
117 | (value < dev->abs[code] + (dev->absfuzz[code] << 1))) | |
118 | value = (dev->abs[code] + value) >> 1; | |
119 | } | |
120 | ||
121 | if (dev->abs[code] == value) | |
122 | return; | |
123 | ||
124 | dev->abs[code] = value; | |
125 | break; | |
126 | ||
127 | case EV_REL: | |
128 | ||
129 | if (code > REL_MAX || !test_bit(code, dev->relbit) || (value == 0)) | |
130 | return; | |
131 | ||
132 | break; | |
133 | ||
134 | case EV_MSC: | |
135 | ||
136 | if (code > MSC_MAX || !test_bit(code, dev->mscbit)) | |
137 | return; | |
138 | ||
139 | if (dev->event) dev->event(dev, type, code, value); | |
140 | ||
141 | break; | |
142 | ||
143 | case EV_LED: | |
144 | ||
145 | if (code > LED_MAX || !test_bit(code, dev->ledbit) || !!test_bit(code, dev->led) == value) | |
146 | return; | |
147 | ||
148 | change_bit(code, dev->led); | |
149 | if (dev->event) dev->event(dev, type, code, value); | |
150 | ||
151 | break; | |
152 | ||
153 | case EV_SND: | |
154 | ||
155 | if (code > SND_MAX || !test_bit(code, dev->sndbit)) | |
156 | return; | |
157 | ||
158 | if (dev->event) dev->event(dev, type, code, value); | |
159 | ||
160 | break; | |
161 | ||
162 | case EV_REP: | |
163 | ||
164 | if (code > REP_MAX || value < 0 || dev->rep[code] == value) return; | |
165 | ||
166 | dev->rep[code] = value; | |
167 | if (dev->event) dev->event(dev, type, code, value); | |
168 | ||
169 | break; | |
170 | ||
171 | case EV_FF: | |
172 | if (dev->event) dev->event(dev, type, code, value); | |
173 | break; | |
174 | } | |
175 | ||
176 | if (type != EV_SYN) | |
177 | dev->sync = 0; | |
178 | ||
179 | if (dev->grab) | |
180 | dev->grab->handler->event(dev->grab, type, code, value); | |
181 | else | |
182 | list_for_each_entry(handle, &dev->h_list, d_node) | |
183 | if (handle->open) | |
184 | handle->handler->event(handle, type, code, value); | |
185 | } | |
186 | ||
187 | static void input_repeat_key(unsigned long data) | |
188 | { | |
189 | struct input_dev *dev = (void *) data; | |
190 | ||
191 | if (!test_bit(dev->repeat_key, dev->key)) | |
192 | return; | |
193 | ||
194 | input_event(dev, EV_KEY, dev->repeat_key, 2); | |
195 | input_sync(dev); | |
196 | ||
197 | if (dev->rep[REP_PERIOD]) | |
198 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(dev->rep[REP_PERIOD])); | |
199 | } | |
200 | ||
201 | int input_accept_process(struct input_handle *handle, struct file *file) | |
202 | { | |
203 | if (handle->dev->accept) | |
204 | return handle->dev->accept(handle->dev, file); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | int input_grab_device(struct input_handle *handle) | |
210 | { | |
211 | if (handle->dev->grab) | |
212 | return -EBUSY; | |
213 | ||
214 | handle->dev->grab = handle; | |
215 | return 0; | |
216 | } | |
217 | ||
218 | void input_release_device(struct input_handle *handle) | |
219 | { | |
220 | if (handle->dev->grab == handle) | |
221 | handle->dev->grab = NULL; | |
222 | } | |
223 | ||
224 | int input_open_device(struct input_handle *handle) | |
225 | { | |
0fbf87ca DT |
226 | struct input_dev *dev = handle->dev; |
227 | int err; | |
228 | ||
e676c232 | 229 | err = mutex_lock_interruptible(&dev->mutex); |
0fbf87ca DT |
230 | if (err) |
231 | return err; | |
232 | ||
1da177e4 | 233 | handle->open++; |
0fbf87ca DT |
234 | |
235 | if (!dev->users++ && dev->open) | |
236 | err = dev->open(dev); | |
237 | ||
238 | if (err) | |
239 | handle->open--; | |
240 | ||
e676c232 | 241 | mutex_unlock(&dev->mutex); |
0fbf87ca DT |
242 | |
243 | return err; | |
1da177e4 LT |
244 | } |
245 | ||
246 | int input_flush_device(struct input_handle* handle, struct file* file) | |
247 | { | |
248 | if (handle->dev->flush) | |
249 | return handle->dev->flush(handle->dev, file); | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | void input_close_device(struct input_handle *handle) | |
255 | { | |
0fbf87ca DT |
256 | struct input_dev *dev = handle->dev; |
257 | ||
1da177e4 | 258 | input_release_device(handle); |
0fbf87ca | 259 | |
e676c232 | 260 | mutex_lock(&dev->mutex); |
0fbf87ca DT |
261 | |
262 | if (!--dev->users && dev->close) | |
263 | dev->close(dev); | |
1da177e4 | 264 | handle->open--; |
0fbf87ca | 265 | |
e676c232 | 266 | mutex_unlock(&dev->mutex); |
1da177e4 LT |
267 | } |
268 | ||
269 | static void input_link_handle(struct input_handle *handle) | |
270 | { | |
271 | list_add_tail(&handle->d_node, &handle->dev->h_list); | |
272 | list_add_tail(&handle->h_node, &handle->handler->h_list); | |
273 | } | |
274 | ||
275 | #define MATCH_BIT(bit, max) \ | |
276 | for (i = 0; i < NBITS(max); i++) \ | |
277 | if ((id->bit[i] & dev->bit[i]) != id->bit[i]) \ | |
278 | break; \ | |
279 | if (i != NBITS(max)) \ | |
280 | continue; | |
281 | ||
282 | static struct input_device_id *input_match_device(struct input_device_id *id, struct input_dev *dev) | |
283 | { | |
284 | int i; | |
285 | ||
286 | for (; id->flags || id->driver_info; id++) { | |
287 | ||
288 | if (id->flags & INPUT_DEVICE_ID_MATCH_BUS) | |
ddc5d341 | 289 | if (id->bustype != dev->id.bustype) |
1da177e4 LT |
290 | continue; |
291 | ||
292 | if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR) | |
ddc5d341 | 293 | if (id->vendor != dev->id.vendor) |
1da177e4 LT |
294 | continue; |
295 | ||
296 | if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT) | |
ddc5d341 | 297 | if (id->product != dev->id.product) |
1da177e4 LT |
298 | continue; |
299 | ||
300 | if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION) | |
ddc5d341 | 301 | if (id->version != dev->id.version) |
1da177e4 LT |
302 | continue; |
303 | ||
304 | MATCH_BIT(evbit, EV_MAX); | |
305 | MATCH_BIT(keybit, KEY_MAX); | |
306 | MATCH_BIT(relbit, REL_MAX); | |
307 | MATCH_BIT(absbit, ABS_MAX); | |
308 | MATCH_BIT(mscbit, MSC_MAX); | |
309 | MATCH_BIT(ledbit, LED_MAX); | |
310 | MATCH_BIT(sndbit, SND_MAX); | |
311 | MATCH_BIT(ffbit, FF_MAX); | |
ff13f98b | 312 | MATCH_BIT(swbit, SW_MAX); |
1da177e4 LT |
313 | |
314 | return id; | |
315 | } | |
316 | ||
317 | return NULL; | |
318 | } | |
319 | ||
f96b434d DT |
320 | #ifdef CONFIG_PROC_FS |
321 | ||
322 | static struct proc_dir_entry *proc_bus_input_dir; | |
323 | static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait); | |
324 | static int input_devices_state; | |
325 | ||
326 | static inline void input_wakeup_procfs_readers(void) | |
327 | { | |
328 | input_devices_state++; | |
329 | wake_up(&input_devices_poll_wait); | |
330 | } | |
331 | ||
969b21cd | 332 | static unsigned int input_proc_devices_poll(struct file *file, poll_table *wait) |
f96b434d DT |
333 | { |
334 | int state = input_devices_state; | |
335 | poll_wait(file, &input_devices_poll_wait, wait); | |
336 | if (state != input_devices_state) | |
337 | return POLLIN | POLLRDNORM; | |
338 | return 0; | |
339 | } | |
340 | ||
969b21cd DT |
341 | static struct list_head *list_get_nth_element(struct list_head *list, loff_t *pos) |
342 | { | |
343 | struct list_head *node; | |
344 | loff_t i = 0; | |
f96b434d | 345 | |
969b21cd DT |
346 | list_for_each(node, list) |
347 | if (i++ == *pos) | |
348 | return node; | |
349 | ||
350 | return NULL; | |
351 | } | |
f96b434d | 352 | |
969b21cd | 353 | static struct list_head *list_get_next_element(struct list_head *list, struct list_head *element, loff_t *pos) |
f96b434d | 354 | { |
969b21cd DT |
355 | if (element->next == list) |
356 | return NULL; | |
f96b434d | 357 | |
969b21cd DT |
358 | ++(*pos); |
359 | return element->next; | |
360 | } | |
f96b434d | 361 | |
969b21cd DT |
362 | static void *input_devices_seq_start(struct seq_file *seq, loff_t *pos) |
363 | { | |
364 | /* acquire lock here ... Yes, we do need locking, I knowi, I know... */ | |
f96b434d | 365 | |
969b21cd DT |
366 | return list_get_nth_element(&input_dev_list, pos); |
367 | } | |
051b2fea | 368 | |
969b21cd DT |
369 | static void *input_devices_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
370 | { | |
371 | return list_get_next_element(&input_dev_list, v, pos); | |
372 | } | |
f96b434d | 373 | |
969b21cd DT |
374 | static void input_devices_seq_stop(struct seq_file *seq, void *v) |
375 | { | |
376 | /* release lock here */ | |
377 | } | |
f96b434d | 378 | |
969b21cd DT |
379 | static void input_seq_print_bitmap(struct seq_file *seq, const char *name, |
380 | unsigned long *bitmap, int max) | |
381 | { | |
382 | int i; | |
051b2fea | 383 | |
969b21cd DT |
384 | for (i = NBITS(max) - 1; i > 0; i--) |
385 | if (bitmap[i]) | |
386 | break; | |
f96b434d | 387 | |
969b21cd DT |
388 | seq_printf(seq, "B: %s=", name); |
389 | for (; i >= 0; i--) | |
390 | seq_printf(seq, "%lx%s", bitmap[i], i > 0 ? " " : ""); | |
391 | seq_putc(seq, '\n'); | |
392 | } | |
f96b434d | 393 | |
969b21cd DT |
394 | static int input_devices_seq_show(struct seq_file *seq, void *v) |
395 | { | |
396 | struct input_dev *dev = container_of(v, struct input_dev, node); | |
397 | const char *path = kobject_get_path(&dev->cdev.kobj, GFP_KERNEL); | |
398 | struct input_handle *handle; | |
399 | ||
400 | seq_printf(seq, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n", | |
401 | dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version); | |
402 | ||
403 | seq_printf(seq, "N: Name=\"%s\"\n", dev->name ? dev->name : ""); | |
404 | seq_printf(seq, "P: Phys=%s\n", dev->phys ? dev->phys : ""); | |
405 | seq_printf(seq, "S: Sysfs=%s\n", path ? path : ""); | |
406 | seq_printf(seq, "H: Handlers="); | |
407 | ||
408 | list_for_each_entry(handle, &dev->h_list, d_node) | |
409 | seq_printf(seq, "%s ", handle->name); | |
410 | seq_putc(seq, '\n'); | |
411 | ||
412 | input_seq_print_bitmap(seq, "EV", dev->evbit, EV_MAX); | |
413 | if (test_bit(EV_KEY, dev->evbit)) | |
414 | input_seq_print_bitmap(seq, "KEY", dev->keybit, KEY_MAX); | |
415 | if (test_bit(EV_REL, dev->evbit)) | |
416 | input_seq_print_bitmap(seq, "REL", dev->relbit, REL_MAX); | |
417 | if (test_bit(EV_ABS, dev->evbit)) | |
418 | input_seq_print_bitmap(seq, "ABS", dev->absbit, ABS_MAX); | |
419 | if (test_bit(EV_MSC, dev->evbit)) | |
420 | input_seq_print_bitmap(seq, "MSC", dev->mscbit, MSC_MAX); | |
421 | if (test_bit(EV_LED, dev->evbit)) | |
422 | input_seq_print_bitmap(seq, "LED", dev->ledbit, LED_MAX); | |
423 | if (test_bit(EV_SND, dev->evbit)) | |
424 | input_seq_print_bitmap(seq, "SND", dev->sndbit, SND_MAX); | |
425 | if (test_bit(EV_FF, dev->evbit)) | |
426 | input_seq_print_bitmap(seq, "FF", dev->ffbit, FF_MAX); | |
427 | if (test_bit(EV_SW, dev->evbit)) | |
428 | input_seq_print_bitmap(seq, "SW", dev->swbit, SW_MAX); | |
429 | ||
430 | seq_putc(seq, '\n'); | |
431 | ||
432 | kfree(path); | |
433 | return 0; | |
f96b434d DT |
434 | } |
435 | ||
969b21cd DT |
436 | static struct seq_operations input_devices_seq_ops = { |
437 | .start = input_devices_seq_start, | |
438 | .next = input_devices_seq_next, | |
439 | .stop = input_devices_seq_stop, | |
440 | .show = input_devices_seq_show, | |
441 | }; | |
442 | ||
443 | static int input_proc_devices_open(struct inode *inode, struct file *file) | |
f96b434d | 444 | { |
969b21cd DT |
445 | return seq_open(file, &input_devices_seq_ops); |
446 | } | |
447 | ||
448 | static struct file_operations input_devices_fileops = { | |
449 | .owner = THIS_MODULE, | |
450 | .open = input_proc_devices_open, | |
451 | .poll = input_proc_devices_poll, | |
452 | .read = seq_read, | |
453 | .llseek = seq_lseek, | |
454 | .release = seq_release, | |
455 | }; | |
456 | ||
457 | static void *input_handlers_seq_start(struct seq_file *seq, loff_t *pos) | |
458 | { | |
459 | /* acquire lock here ... Yes, we do need locking, I knowi, I know... */ | |
460 | seq->private = (void *)(unsigned long)*pos; | |
461 | return list_get_nth_element(&input_handler_list, pos); | |
462 | } | |
f96b434d | 463 | |
969b21cd DT |
464 | static void *input_handlers_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
465 | { | |
466 | seq->private = (void *)(unsigned long)(*pos + 1); | |
467 | return list_get_next_element(&input_handler_list, v, pos); | |
f96b434d DT |
468 | } |
469 | ||
969b21cd DT |
470 | static void input_handlers_seq_stop(struct seq_file *seq, void *v) |
471 | { | |
472 | /* release lock here */ | |
473 | } | |
474 | ||
475 | static int input_handlers_seq_show(struct seq_file *seq, void *v) | |
476 | { | |
477 | struct input_handler *handler = container_of(v, struct input_handler, node); | |
478 | ||
479 | seq_printf(seq, "N: Number=%ld Name=%s", | |
480 | (unsigned long)seq->private, handler->name); | |
481 | if (handler->fops) | |
482 | seq_printf(seq, " Minor=%d", handler->minor); | |
483 | seq_putc(seq, '\n'); | |
484 | ||
485 | return 0; | |
486 | } | |
487 | static struct seq_operations input_handlers_seq_ops = { | |
488 | .start = input_handlers_seq_start, | |
489 | .next = input_handlers_seq_next, | |
490 | .stop = input_handlers_seq_stop, | |
491 | .show = input_handlers_seq_show, | |
492 | }; | |
493 | ||
494 | static int input_proc_handlers_open(struct inode *inode, struct file *file) | |
495 | { | |
496 | return seq_open(file, &input_handlers_seq_ops); | |
497 | } | |
498 | ||
499 | static struct file_operations input_handlers_fileops = { | |
500 | .owner = THIS_MODULE, | |
501 | .open = input_proc_handlers_open, | |
502 | .read = seq_read, | |
503 | .llseek = seq_lseek, | |
504 | .release = seq_release, | |
505 | }; | |
f96b434d DT |
506 | |
507 | static int __init input_proc_init(void) | |
508 | { | |
509 | struct proc_dir_entry *entry; | |
510 | ||
511 | proc_bus_input_dir = proc_mkdir("input", proc_bus); | |
512 | if (!proc_bus_input_dir) | |
513 | return -ENOMEM; | |
514 | ||
515 | proc_bus_input_dir->owner = THIS_MODULE; | |
516 | ||
969b21cd | 517 | entry = create_proc_entry("devices", 0, proc_bus_input_dir); |
f96b434d DT |
518 | if (!entry) |
519 | goto fail1; | |
520 | ||
521 | entry->owner = THIS_MODULE; | |
969b21cd | 522 | entry->proc_fops = &input_devices_fileops; |
f96b434d | 523 | |
969b21cd | 524 | entry = create_proc_entry("handlers", 0, proc_bus_input_dir); |
f96b434d DT |
525 | if (!entry) |
526 | goto fail2; | |
527 | ||
528 | entry->owner = THIS_MODULE; | |
969b21cd | 529 | entry->proc_fops = &input_handlers_fileops; |
f96b434d DT |
530 | |
531 | return 0; | |
532 | ||
533 | fail2: remove_proc_entry("devices", proc_bus_input_dir); | |
534 | fail1: remove_proc_entry("input", proc_bus); | |
535 | return -ENOMEM; | |
536 | } | |
537 | ||
beffbdc2 | 538 | static void input_proc_exit(void) |
f96b434d DT |
539 | { |
540 | remove_proc_entry("devices", proc_bus_input_dir); | |
541 | remove_proc_entry("handlers", proc_bus_input_dir); | |
542 | remove_proc_entry("input", proc_bus); | |
543 | } | |
544 | ||
545 | #else /* !CONFIG_PROC_FS */ | |
546 | static inline void input_wakeup_procfs_readers(void) { } | |
547 | static inline int input_proc_init(void) { return 0; } | |
548 | static inline void input_proc_exit(void) { } | |
549 | #endif | |
550 | ||
5c1e9a6a DT |
551 | #define INPUT_DEV_STRING_ATTR_SHOW(name) \ |
552 | static ssize_t input_dev_show_##name(struct class_device *dev, char *buf) \ | |
553 | { \ | |
554 | struct input_dev *input_dev = to_input_dev(dev); \ | |
555 | int retval; \ | |
556 | \ | |
e676c232 | 557 | retval = mutex_lock_interruptible(&input_dev->mutex); \ |
5c1e9a6a DT |
558 | if (retval) \ |
559 | return retval; \ | |
560 | \ | |
2db66876 DT |
561 | retval = scnprintf(buf, PAGE_SIZE, \ |
562 | "%s\n", input_dev->name ? input_dev->name : ""); \ | |
5c1e9a6a | 563 | \ |
e676c232 | 564 | mutex_unlock(&input_dev->mutex); \ |
5c1e9a6a DT |
565 | \ |
566 | return retval; \ | |
629b77a4 GKH |
567 | } \ |
568 | static CLASS_DEVICE_ATTR(name, S_IRUGO, input_dev_show_##name, NULL); | |
5c1e9a6a DT |
569 | |
570 | INPUT_DEV_STRING_ATTR_SHOW(name); | |
571 | INPUT_DEV_STRING_ATTR_SHOW(phys); | |
572 | INPUT_DEV_STRING_ATTR_SHOW(uniq); | |
573 | ||
ac648a6a DT |
574 | static int input_print_modalias_bits(char *buf, int size, |
575 | char name, unsigned long *bm, | |
576 | unsigned int min_bit, unsigned int max_bit) | |
1d8f430c | 577 | { |
ac648a6a | 578 | int len = 0, i; |
1d8f430c | 579 | |
ac648a6a DT |
580 | len += snprintf(buf, max(size, 0), "%c", name); |
581 | for (i = min_bit; i < max_bit; i++) | |
582 | if (bm[LONG(i)] & BIT(i)) | |
583 | len += snprintf(buf + len, max(size - len, 0), "%X,", i); | |
1d8f430c RR |
584 | return len; |
585 | } | |
586 | ||
2db66876 DT |
587 | static int input_print_modalias(char *buf, int size, struct input_dev *id, |
588 | int add_cr) | |
1d8f430c | 589 | { |
bd37e5a9 | 590 | int len; |
1d8f430c | 591 | |
ac648a6a DT |
592 | len = snprintf(buf, max(size, 0), |
593 | "input:b%04Xv%04Xp%04Xe%04X-", | |
594 | id->id.bustype, id->id.vendor, | |
595 | id->id.product, id->id.version); | |
596 | ||
597 | len += input_print_modalias_bits(buf + len, size - len, | |
598 | 'e', id->evbit, 0, EV_MAX); | |
599 | len += input_print_modalias_bits(buf + len, size - len, | |
600 | 'k', id->keybit, KEY_MIN_INTERESTING, KEY_MAX); | |
601 | len += input_print_modalias_bits(buf + len, size - len, | |
602 | 'r', id->relbit, 0, REL_MAX); | |
603 | len += input_print_modalias_bits(buf + len, size - len, | |
604 | 'a', id->absbit, 0, ABS_MAX); | |
605 | len += input_print_modalias_bits(buf + len, size - len, | |
606 | 'm', id->mscbit, 0, MSC_MAX); | |
607 | len += input_print_modalias_bits(buf + len, size - len, | |
608 | 'l', id->ledbit, 0, LED_MAX); | |
609 | len += input_print_modalias_bits(buf + len, size - len, | |
610 | 's', id->sndbit, 0, SND_MAX); | |
611 | len += input_print_modalias_bits(buf + len, size - len, | |
612 | 'f', id->ffbit, 0, FF_MAX); | |
613 | len += input_print_modalias_bits(buf + len, size - len, | |
614 | 'w', id->swbit, 0, SW_MAX); | |
2db66876 DT |
615 | |
616 | if (add_cr) | |
ac648a6a | 617 | len += snprintf(buf + len, max(size - len, 0), "\n"); |
2db66876 | 618 | |
bd37e5a9 KS |
619 | return len; |
620 | } | |
621 | ||
622 | static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf) | |
623 | { | |
624 | struct input_dev *id = to_input_dev(dev); | |
625 | ssize_t len; | |
626 | ||
2db66876 DT |
627 | len = input_print_modalias(buf, PAGE_SIZE, id, 1); |
628 | ||
629 | return max_t(int, len, PAGE_SIZE); | |
1d8f430c RR |
630 | } |
631 | static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL); | |
632 | ||
629b77a4 GKH |
633 | static struct attribute *input_dev_attrs[] = { |
634 | &class_device_attr_name.attr, | |
635 | &class_device_attr_phys.attr, | |
636 | &class_device_attr_uniq.attr, | |
1d8f430c | 637 | &class_device_attr_modalias.attr, |
629b77a4 GKH |
638 | NULL |
639 | }; | |
640 | ||
bd0ef235 | 641 | static struct attribute_group input_dev_attr_group = { |
629b77a4 | 642 | .attrs = input_dev_attrs, |
5c1e9a6a DT |
643 | }; |
644 | ||
645 | #define INPUT_DEV_ID_ATTR(name) \ | |
646 | static ssize_t input_dev_show_id_##name(struct class_device *dev, char *buf) \ | |
647 | { \ | |
648 | struct input_dev *input_dev = to_input_dev(dev); \ | |
2db66876 | 649 | return scnprintf(buf, PAGE_SIZE, "%04x\n", input_dev->id.name); \ |
5c1e9a6a DT |
650 | } \ |
651 | static CLASS_DEVICE_ATTR(name, S_IRUGO, input_dev_show_id_##name, NULL); | |
652 | ||
653 | INPUT_DEV_ID_ATTR(bustype); | |
654 | INPUT_DEV_ID_ATTR(vendor); | |
655 | INPUT_DEV_ID_ATTR(product); | |
656 | INPUT_DEV_ID_ATTR(version); | |
657 | ||
658 | static struct attribute *input_dev_id_attrs[] = { | |
659 | &class_device_attr_bustype.attr, | |
660 | &class_device_attr_vendor.attr, | |
661 | &class_device_attr_product.attr, | |
662 | &class_device_attr_version.attr, | |
663 | NULL | |
664 | }; | |
665 | ||
666 | static struct attribute_group input_dev_id_attr_group = { | |
667 | .name = "id", | |
668 | .attrs = input_dev_id_attrs, | |
669 | }; | |
670 | ||
969b21cd DT |
671 | static int input_print_bitmap(char *buf, int buf_size, unsigned long *bitmap, |
672 | int max, int add_cr) | |
673 | { | |
674 | int i; | |
675 | int len = 0; | |
676 | ||
677 | for (i = NBITS(max) - 1; i > 0; i--) | |
678 | if (bitmap[i]) | |
679 | break; | |
680 | ||
681 | for (; i >= 0; i--) | |
682 | len += snprintf(buf + len, max(buf_size - len, 0), | |
683 | "%lx%s", bitmap[i], i > 0 ? " " : ""); | |
684 | ||
685 | if (add_cr) | |
686 | len += snprintf(buf + len, max(buf_size - len, 0), "\n"); | |
687 | ||
688 | return len; | |
689 | } | |
690 | ||
5c1e9a6a DT |
691 | #define INPUT_DEV_CAP_ATTR(ev, bm) \ |
692 | static ssize_t input_dev_show_cap_##bm(struct class_device *dev, char *buf) \ | |
693 | { \ | |
694 | struct input_dev *input_dev = to_input_dev(dev); \ | |
2db66876 DT |
695 | int len = input_print_bitmap(buf, PAGE_SIZE, \ |
696 | input_dev->bm##bit, ev##_MAX, 1); \ | |
697 | return min_t(int, len, PAGE_SIZE); \ | |
5c1e9a6a DT |
698 | } \ |
699 | static CLASS_DEVICE_ATTR(bm, S_IRUGO, input_dev_show_cap_##bm, NULL); | |
700 | ||
701 | INPUT_DEV_CAP_ATTR(EV, ev); | |
702 | INPUT_DEV_CAP_ATTR(KEY, key); | |
703 | INPUT_DEV_CAP_ATTR(REL, rel); | |
704 | INPUT_DEV_CAP_ATTR(ABS, abs); | |
705 | INPUT_DEV_CAP_ATTR(MSC, msc); | |
706 | INPUT_DEV_CAP_ATTR(LED, led); | |
707 | INPUT_DEV_CAP_ATTR(SND, snd); | |
708 | INPUT_DEV_CAP_ATTR(FF, ff); | |
709 | INPUT_DEV_CAP_ATTR(SW, sw); | |
710 | ||
711 | static struct attribute *input_dev_caps_attrs[] = { | |
712 | &class_device_attr_ev.attr, | |
713 | &class_device_attr_key.attr, | |
714 | &class_device_attr_rel.attr, | |
715 | &class_device_attr_abs.attr, | |
716 | &class_device_attr_msc.attr, | |
717 | &class_device_attr_led.attr, | |
718 | &class_device_attr_snd.attr, | |
719 | &class_device_attr_ff.attr, | |
720 | &class_device_attr_sw.attr, | |
721 | NULL | |
722 | }; | |
723 | ||
724 | static struct attribute_group input_dev_caps_attr_group = { | |
725 | .name = "capabilities", | |
726 | .attrs = input_dev_caps_attrs, | |
727 | }; | |
728 | ||
d19fbe8a DT |
729 | static void input_dev_release(struct class_device *class_dev) |
730 | { | |
731 | struct input_dev *dev = to_input_dev(class_dev); | |
732 | ||
733 | kfree(dev); | |
734 | module_put(THIS_MODULE); | |
735 | } | |
736 | ||
a7fadbe1 | 737 | /* |
312c004d | 738 | * Input uevent interface - loading event handlers based on |
a7fadbe1 DT |
739 | * device bitfields. |
740 | */ | |
312c004d | 741 | static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index, |
ac648a6a DT |
742 | char *buffer, int buffer_size, int *cur_len, |
743 | const char *name, unsigned long *bitmap, int max) | |
a7fadbe1 DT |
744 | { |
745 | if (*cur_index >= num_envp - 1) | |
746 | return -ENOMEM; | |
747 | ||
748 | envp[*cur_index] = buffer + *cur_len; | |
749 | ||
750 | *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), name); | |
ac648a6a | 751 | if (*cur_len >= buffer_size) |
a7fadbe1 DT |
752 | return -ENOMEM; |
753 | ||
754 | *cur_len += input_print_bitmap(buffer + *cur_len, | |
755 | max(buffer_size - *cur_len, 0), | |
2db66876 | 756 | bitmap, max, 0) + 1; |
a7fadbe1 DT |
757 | if (*cur_len > buffer_size) |
758 | return -ENOMEM; | |
759 | ||
760 | (*cur_index)++; | |
761 | return 0; | |
762 | } | |
763 | ||
ac648a6a DT |
764 | static int input_add_uevent_modalias_var(char **envp, int num_envp, int *cur_index, |
765 | char *buffer, int buffer_size, int *cur_len, | |
766 | struct input_dev *dev) | |
767 | { | |
768 | if (*cur_index >= num_envp - 1) | |
769 | return -ENOMEM; | |
770 | ||
771 | envp[*cur_index] = buffer + *cur_len; | |
772 | ||
773 | *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), | |
774 | "MODALIAS="); | |
775 | if (*cur_len >= buffer_size) | |
776 | return -ENOMEM; | |
777 | ||
778 | *cur_len += input_print_modalias(buffer + *cur_len, | |
779 | max(buffer_size - *cur_len, 0), | |
780 | dev, 0) + 1; | |
781 | if (*cur_len > buffer_size) | |
782 | return -ENOMEM; | |
783 | ||
784 | (*cur_index)++; | |
785 | return 0; | |
786 | } | |
787 | ||
a7fadbe1 DT |
788 | #define INPUT_ADD_HOTPLUG_VAR(fmt, val...) \ |
789 | do { \ | |
ac648a6a | 790 | int err = add_uevent_var(envp, num_envp, &i, \ |
a7fadbe1 DT |
791 | buffer, buffer_size, &len, \ |
792 | fmt, val); \ | |
793 | if (err) \ | |
794 | return err; \ | |
795 | } while (0) | |
796 | ||
797 | #define INPUT_ADD_HOTPLUG_BM_VAR(name, bm, max) \ | |
798 | do { \ | |
312c004d | 799 | int err = input_add_uevent_bm_var(envp, num_envp, &i, \ |
a7fadbe1 DT |
800 | buffer, buffer_size, &len, \ |
801 | name, bm, max); \ | |
802 | if (err) \ | |
803 | return err; \ | |
804 | } while (0) | |
805 | ||
ac648a6a DT |
806 | #define INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev) \ |
807 | do { \ | |
808 | int err = input_add_uevent_modalias_var(envp, \ | |
809 | num_envp, &i, \ | |
810 | buffer, buffer_size, &len, \ | |
811 | dev); \ | |
812 | if (err) \ | |
813 | return err; \ | |
814 | } while (0) | |
815 | ||
312c004d KS |
816 | static int input_dev_uevent(struct class_device *cdev, char **envp, |
817 | int num_envp, char *buffer, int buffer_size) | |
a7fadbe1 DT |
818 | { |
819 | struct input_dev *dev = to_input_dev(cdev); | |
820 | int i = 0; | |
821 | int len = 0; | |
822 | ||
823 | INPUT_ADD_HOTPLUG_VAR("PRODUCT=%x/%x/%x/%x", | |
824 | dev->id.bustype, dev->id.vendor, | |
825 | dev->id.product, dev->id.version); | |
826 | if (dev->name) | |
827 | INPUT_ADD_HOTPLUG_VAR("NAME=\"%s\"", dev->name); | |
828 | if (dev->phys) | |
829 | INPUT_ADD_HOTPLUG_VAR("PHYS=\"%s\"", dev->phys); | |
08de1f04 | 830 | if (dev->uniq) |
a7fadbe1 DT |
831 | INPUT_ADD_HOTPLUG_VAR("UNIQ=\"%s\"", dev->uniq); |
832 | ||
833 | INPUT_ADD_HOTPLUG_BM_VAR("EV=", dev->evbit, EV_MAX); | |
834 | if (test_bit(EV_KEY, dev->evbit)) | |
835 | INPUT_ADD_HOTPLUG_BM_VAR("KEY=", dev->keybit, KEY_MAX); | |
836 | if (test_bit(EV_REL, dev->evbit)) | |
837 | INPUT_ADD_HOTPLUG_BM_VAR("REL=", dev->relbit, REL_MAX); | |
838 | if (test_bit(EV_ABS, dev->evbit)) | |
839 | INPUT_ADD_HOTPLUG_BM_VAR("ABS=", dev->absbit, ABS_MAX); | |
840 | if (test_bit(EV_MSC, dev->evbit)) | |
841 | INPUT_ADD_HOTPLUG_BM_VAR("MSC=", dev->mscbit, MSC_MAX); | |
842 | if (test_bit(EV_LED, dev->evbit)) | |
843 | INPUT_ADD_HOTPLUG_BM_VAR("LED=", dev->ledbit, LED_MAX); | |
844 | if (test_bit(EV_SND, dev->evbit)) | |
845 | INPUT_ADD_HOTPLUG_BM_VAR("SND=", dev->sndbit, SND_MAX); | |
846 | if (test_bit(EV_FF, dev->evbit)) | |
847 | INPUT_ADD_HOTPLUG_BM_VAR("FF=", dev->ffbit, FF_MAX); | |
848 | if (test_bit(EV_SW, dev->evbit)) | |
849 | INPUT_ADD_HOTPLUG_BM_VAR("SW=", dev->swbit, SW_MAX); | |
850 | ||
ac648a6a | 851 | INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev); |
a7fadbe1 | 852 | |
bd37e5a9 | 853 | envp[i] = NULL; |
a7fadbe1 DT |
854 | return 0; |
855 | } | |
856 | ||
ea9f240b GKH |
857 | struct class input_class = { |
858 | .name = "input", | |
d19fbe8a | 859 | .release = input_dev_release, |
312c004d | 860 | .uevent = input_dev_uevent, |
d19fbe8a DT |
861 | }; |
862 | ||
863 | struct input_dev *input_allocate_device(void) | |
864 | { | |
865 | struct input_dev *dev; | |
866 | ||
867 | dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL); | |
868 | if (dev) { | |
869 | dev->dynalloc = 1; | |
ea9f240b | 870 | dev->cdev.class = &input_class; |
d19fbe8a DT |
871 | class_device_initialize(&dev->cdev); |
872 | INIT_LIST_HEAD(&dev->h_list); | |
873 | INIT_LIST_HEAD(&dev->node); | |
874 | } | |
875 | ||
876 | return dev; | |
877 | } | |
878 | ||
5f945489 | 879 | int input_register_device(struct input_dev *dev) |
1da177e4 | 880 | { |
bd0ef235 | 881 | static atomic_t input_no = ATOMIC_INIT(0); |
1da177e4 LT |
882 | struct input_handle *handle; |
883 | struct input_handler *handler; | |
884 | struct input_device_id *id; | |
bd0ef235 DT |
885 | const char *path; |
886 | int error; | |
1da177e4 | 887 | |
5f945489 DT |
888 | if (!dev->dynalloc) { |
889 | printk(KERN_WARNING "input: device %s is statically allocated, will not register\n" | |
890 | "Please convert to input_allocate_device() or contact dtor_core@ameritech.net\n", | |
891 | dev->name ? dev->name : "<Unknown>"); | |
892 | return -EINVAL; | |
893 | } | |
1da177e4 | 894 | |
e676c232 | 895 | mutex_init(&dev->mutex); |
5f945489 | 896 | set_bit(EV_SYN, dev->evbit); |
0fbf87ca | 897 | |
1da177e4 LT |
898 | /* |
899 | * If delay and period are pre-set by the driver, then autorepeating | |
900 | * is handled by the driver itself and we don't do it in input.c. | |
901 | */ | |
902 | ||
903 | init_timer(&dev->timer); | |
904 | if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD]) { | |
905 | dev->timer.data = (long) dev; | |
906 | dev->timer.function = input_repeat_key; | |
907 | dev->rep[REP_DELAY] = 250; | |
908 | dev->rep[REP_PERIOD] = 33; | |
909 | } | |
910 | ||
911 | INIT_LIST_HEAD(&dev->h_list); | |
912 | list_add_tail(&dev->node, &input_dev_list); | |
913 | ||
bd0ef235 DT |
914 | dev->cdev.class = &input_class; |
915 | snprintf(dev->cdev.class_id, sizeof(dev->cdev.class_id), | |
916 | "input%ld", (unsigned long) atomic_inc_return(&input_no) - 1); | |
917 | ||
918 | error = class_device_add(&dev->cdev); | |
919 | if (error) | |
920 | return error; | |
921 | ||
922 | error = sysfs_create_group(&dev->cdev.kobj, &input_dev_attr_group); | |
923 | if (error) | |
924 | goto fail1; | |
925 | ||
926 | error = sysfs_create_group(&dev->cdev.kobj, &input_dev_id_attr_group); | |
927 | if (error) | |
928 | goto fail2; | |
929 | ||
930 | error = sysfs_create_group(&dev->cdev.kobj, &input_dev_caps_attr_group); | |
931 | if (error) | |
932 | goto fail3; | |
933 | ||
934 | __module_get(THIS_MODULE); | |
935 | ||
936 | path = kobject_get_path(&dev->cdev.kobj, GFP_KERNEL); | |
937 | printk(KERN_INFO "input: %s as %s\n", | |
938 | dev->name ? dev->name : "Unspecified device", path ? path : "N/A"); | |
939 | kfree(path); | |
10204020 | 940 | |
1da177e4 LT |
941 | list_for_each_entry(handler, &input_handler_list, node) |
942 | if (!handler->blacklist || !input_match_device(handler->blacklist, dev)) | |
943 | if ((id = input_match_device(handler->id_table, dev))) | |
944 | if ((handle = handler->connect(handler, dev, id))) | |
945 | input_link_handle(handle); | |
946 | ||
f96b434d | 947 | input_wakeup_procfs_readers(); |
5f945489 DT |
948 | |
949 | return 0; | |
bd0ef235 DT |
950 | |
951 | fail3: sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group); | |
952 | fail2: sysfs_remove_group(&dev->cdev.kobj, &input_dev_attr_group); | |
953 | fail1: class_device_del(&dev->cdev); | |
954 | return error; | |
1da177e4 LT |
955 | } |
956 | ||
957 | void input_unregister_device(struct input_dev *dev) | |
958 | { | |
959 | struct list_head * node, * next; | |
960 | ||
961 | if (!dev) return; | |
962 | ||
963 | del_timer_sync(&dev->timer); | |
964 | ||
965 | list_for_each_safe(node, next, &dev->h_list) { | |
966 | struct input_handle * handle = to_handle(node); | |
967 | list_del_init(&handle->d_node); | |
968 | list_del_init(&handle->h_node); | |
969 | handle->handler->disconnect(handle); | |
970 | } | |
971 | ||
1da177e4 LT |
972 | list_del_init(&dev->node); |
973 | ||
5f945489 DT |
974 | sysfs_remove_group(&dev->cdev.kobj, &input_dev_caps_attr_group); |
975 | sysfs_remove_group(&dev->cdev.kobj, &input_dev_id_attr_group); | |
bd0ef235 | 976 | sysfs_remove_group(&dev->cdev.kobj, &input_dev_attr_group); |
5f945489 | 977 | class_device_unregister(&dev->cdev); |
d19fbe8a | 978 | |
f96b434d | 979 | input_wakeup_procfs_readers(); |
1da177e4 LT |
980 | } |
981 | ||
982 | void input_register_handler(struct input_handler *handler) | |
983 | { | |
984 | struct input_dev *dev; | |
985 | struct input_handle *handle; | |
986 | struct input_device_id *id; | |
987 | ||
988 | if (!handler) return; | |
989 | ||
990 | INIT_LIST_HEAD(&handler->h_list); | |
991 | ||
992 | if (handler->fops != NULL) | |
993 | input_table[handler->minor >> 5] = handler; | |
994 | ||
995 | list_add_tail(&handler->node, &input_handler_list); | |
996 | ||
997 | list_for_each_entry(dev, &input_dev_list, node) | |
998 | if (!handler->blacklist || !input_match_device(handler->blacklist, dev)) | |
999 | if ((id = input_match_device(handler->id_table, dev))) | |
1000 | if ((handle = handler->connect(handler, dev, id))) | |
1001 | input_link_handle(handle); | |
1002 | ||
f96b434d | 1003 | input_wakeup_procfs_readers(); |
1da177e4 LT |
1004 | } |
1005 | ||
1006 | void input_unregister_handler(struct input_handler *handler) | |
1007 | { | |
1008 | struct list_head * node, * next; | |
1009 | ||
1010 | list_for_each_safe(node, next, &handler->h_list) { | |
1011 | struct input_handle * handle = to_handle_h(node); | |
1012 | list_del_init(&handle->h_node); | |
1013 | list_del_init(&handle->d_node); | |
1014 | handler->disconnect(handle); | |
1015 | } | |
1016 | ||
1017 | list_del_init(&handler->node); | |
1018 | ||
1019 | if (handler->fops != NULL) | |
1020 | input_table[handler->minor >> 5] = NULL; | |
1021 | ||
f96b434d | 1022 | input_wakeup_procfs_readers(); |
1da177e4 LT |
1023 | } |
1024 | ||
1025 | static int input_open_file(struct inode *inode, struct file *file) | |
1026 | { | |
1027 | struct input_handler *handler = input_table[iminor(inode) >> 5]; | |
99ac48f5 | 1028 | const struct file_operations *old_fops, *new_fops = NULL; |
1da177e4 LT |
1029 | int err; |
1030 | ||
1031 | /* No load-on-demand here? */ | |
1032 | if (!handler || !(new_fops = fops_get(handler->fops))) | |
1033 | return -ENODEV; | |
1034 | ||
1035 | /* | |
1036 | * That's _really_ odd. Usually NULL ->open means "nothing special", | |
1037 | * not "no device". Oh, well... | |
1038 | */ | |
1039 | if (!new_fops->open) { | |
1040 | fops_put(new_fops); | |
1041 | return -ENODEV; | |
1042 | } | |
1043 | old_fops = file->f_op; | |
1044 | file->f_op = new_fops; | |
1045 | ||
1046 | err = new_fops->open(inode, file); | |
1047 | ||
1048 | if (err) { | |
1049 | fops_put(file->f_op); | |
1050 | file->f_op = fops_get(old_fops); | |
1051 | } | |
1052 | fops_put(old_fops); | |
1053 | return err; | |
1054 | } | |
1055 | ||
1056 | static struct file_operations input_fops = { | |
1057 | .owner = THIS_MODULE, | |
1058 | .open = input_open_file, | |
1059 | }; | |
1060 | ||
f96b434d | 1061 | static int __init input_init(void) |
1da177e4 | 1062 | { |
f96b434d | 1063 | int err; |
1da177e4 | 1064 | |
ea9f240b | 1065 | err = class_register(&input_class); |
d19fbe8a DT |
1066 | if (err) { |
1067 | printk(KERN_ERR "input: unable to register input_dev class\n"); | |
1068 | return err; | |
1069 | } | |
1070 | ||
f96b434d DT |
1071 | err = input_proc_init(); |
1072 | if (err) | |
b0fdfebb | 1073 | goto fail1; |
1da177e4 | 1074 | |
f96b434d DT |
1075 | err = register_chrdev(INPUT_MAJOR, "input", &input_fops); |
1076 | if (err) { | |
1077 | printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR); | |
b0fdfebb | 1078 | goto fail2; |
1da177e4 | 1079 | } |
e334016f | 1080 | |
1da177e4 | 1081 | return 0; |
1da177e4 | 1082 | |
b0fdfebb | 1083 | fail2: input_proc_exit(); |
ea9f240b | 1084 | fail1: class_unregister(&input_class); |
f96b434d | 1085 | return err; |
1da177e4 LT |
1086 | } |
1087 | ||
1088 | static void __exit input_exit(void) | |
1089 | { | |
f96b434d | 1090 | input_proc_exit(); |
1da177e4 | 1091 | unregister_chrdev(INPUT_MAJOR, "input"); |
ea9f240b | 1092 | class_unregister(&input_class); |
1da177e4 LT |
1093 | } |
1094 | ||
1095 | subsys_initcall(input_init); | |
1096 | module_exit(input_exit); |