Commit | Line | Data |
---|---|---|
3e256b8f LRV |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the | |
20 | * Free Software Foundation, Inc., | |
21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | ||
52858b51 | 24 | #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ |
ed1e0ad8 | 25 | |
3e256b8f LRV |
26 | #include <linux/init.h> |
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/slab.h> | |
7c7cd3bf | 30 | #include <linux/nfc.h> |
3e256b8f LRV |
31 | |
32 | #include "nfc.h" | |
33 | ||
34 | #define VERSION "0.1" | |
35 | ||
36 | int nfc_devlist_generation; | |
37 | DEFINE_MUTEX(nfc_devlist_mutex); | |
38 | ||
8b3fe7b5 IE |
39 | /** |
40 | * nfc_dev_up - turn on the NFC device | |
41 | * | |
42 | * @dev: The nfc device to be turned on | |
43 | * | |
44 | * The device remains up until the nfc_dev_down function is called. | |
45 | */ | |
46 | int nfc_dev_up(struct nfc_dev *dev) | |
47 | { | |
48 | int rc = 0; | |
49 | ||
20c239c1 | 50 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
8b3fe7b5 IE |
51 | |
52 | device_lock(&dev->dev); | |
53 | ||
54 | if (!device_is_registered(&dev->dev)) { | |
55 | rc = -ENODEV; | |
56 | goto error; | |
57 | } | |
58 | ||
59 | if (dev->dev_up) { | |
60 | rc = -EALREADY; | |
61 | goto error; | |
62 | } | |
63 | ||
64 | if (dev->ops->dev_up) | |
65 | rc = dev->ops->dev_up(dev); | |
66 | ||
67 | if (!rc) | |
68 | dev->dev_up = true; | |
69 | ||
70 | error: | |
71 | device_unlock(&dev->dev); | |
72 | return rc; | |
73 | } | |
74 | ||
75 | /** | |
76 | * nfc_dev_down - turn off the NFC device | |
77 | * | |
78 | * @dev: The nfc device to be turned off | |
79 | */ | |
80 | int nfc_dev_down(struct nfc_dev *dev) | |
81 | { | |
82 | int rc = 0; | |
83 | ||
20c239c1 | 84 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
8b3fe7b5 IE |
85 | |
86 | device_lock(&dev->dev); | |
87 | ||
88 | if (!device_is_registered(&dev->dev)) { | |
89 | rc = -ENODEV; | |
90 | goto error; | |
91 | } | |
92 | ||
93 | if (!dev->dev_up) { | |
94 | rc = -EALREADY; | |
95 | goto error; | |
96 | } | |
97 | ||
98 | if (dev->polling || dev->remote_activated) { | |
99 | rc = -EBUSY; | |
100 | goto error; | |
101 | } | |
102 | ||
103 | if (dev->ops->dev_down) | |
104 | dev->ops->dev_down(dev); | |
105 | ||
106 | dev->dev_up = false; | |
107 | ||
108 | error: | |
109 | device_unlock(&dev->dev); | |
110 | return rc; | |
111 | } | |
112 | ||
3e256b8f LRV |
113 | /** |
114 | * nfc_start_poll - start polling for nfc targets | |
115 | * | |
116 | * @dev: The nfc device that must start polling | |
117 | * @protocols: bitset of nfc protocols that must be used for polling | |
118 | * | |
119 | * The device remains polling for targets until a target is found or | |
120 | * the nfc_stop_poll function is called. | |
121 | */ | |
122 | int nfc_start_poll(struct nfc_dev *dev, u32 protocols) | |
123 | { | |
124 | int rc; | |
125 | ||
20c239c1 JP |
126 | pr_debug("dev_name=%s protocols=0x%x\n", |
127 | dev_name(&dev->dev), protocols); | |
3e256b8f LRV |
128 | |
129 | if (!protocols) | |
130 | return -EINVAL; | |
131 | ||
132 | device_lock(&dev->dev); | |
133 | ||
134 | if (!device_is_registered(&dev->dev)) { | |
135 | rc = -ENODEV; | |
136 | goto error; | |
137 | } | |
138 | ||
139 | if (dev->polling) { | |
140 | rc = -EBUSY; | |
141 | goto error; | |
142 | } | |
143 | ||
144 | rc = dev->ops->start_poll(dev, protocols); | |
145 | if (!rc) | |
146 | dev->polling = true; | |
147 | ||
148 | error: | |
149 | device_unlock(&dev->dev); | |
150 | return rc; | |
151 | } | |
152 | ||
153 | /** | |
154 | * nfc_stop_poll - stop polling for nfc targets | |
155 | * | |
156 | * @dev: The nfc device that must stop polling | |
157 | */ | |
158 | int nfc_stop_poll(struct nfc_dev *dev) | |
159 | { | |
160 | int rc = 0; | |
161 | ||
20c239c1 | 162 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f LRV |
163 | |
164 | device_lock(&dev->dev); | |
165 | ||
166 | if (!device_is_registered(&dev->dev)) { | |
167 | rc = -ENODEV; | |
168 | goto error; | |
169 | } | |
170 | ||
171 | if (!dev->polling) { | |
172 | rc = -EINVAL; | |
173 | goto error; | |
174 | } | |
175 | ||
176 | dev->ops->stop_poll(dev); | |
177 | dev->polling = false; | |
178 | ||
179 | error: | |
180 | device_unlock(&dev->dev); | |
181 | return rc; | |
182 | } | |
183 | ||
1ed28f61 SO |
184 | int nfc_dep_link_up(struct nfc_dev *dev, int target_index, |
185 | u8 comm_mode, u8 rf_mode) | |
186 | { | |
187 | int rc = 0; | |
188 | ||
189 | pr_debug("dev_name=%s comm:%d rf:%d\n", | |
190 | dev_name(&dev->dev), comm_mode, rf_mode); | |
191 | ||
192 | if (!dev->ops->dep_link_up) | |
193 | return -EOPNOTSUPP; | |
194 | ||
195 | device_lock(&dev->dev); | |
196 | ||
197 | if (!device_is_registered(&dev->dev)) { | |
198 | rc = -ENODEV; | |
199 | goto error; | |
200 | } | |
201 | ||
202 | if (dev->dep_link_up == true) { | |
203 | rc = -EALREADY; | |
204 | goto error; | |
205 | } | |
206 | ||
207 | rc = dev->ops->dep_link_up(dev, target_index, comm_mode, rf_mode); | |
208 | ||
209 | error: | |
210 | device_unlock(&dev->dev); | |
211 | return rc; | |
212 | } | |
213 | ||
214 | int nfc_dep_link_down(struct nfc_dev *dev) | |
215 | { | |
216 | int rc = 0; | |
217 | ||
218 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); | |
219 | ||
220 | if (!dev->ops->dep_link_down) | |
221 | return -EOPNOTSUPP; | |
222 | ||
223 | device_lock(&dev->dev); | |
224 | ||
225 | if (!device_is_registered(&dev->dev)) { | |
226 | rc = -ENODEV; | |
227 | goto error; | |
228 | } | |
229 | ||
230 | if (dev->dep_link_up == false) { | |
231 | rc = -EALREADY; | |
232 | goto error; | |
233 | } | |
234 | ||
235 | if (dev->dep_rf_mode == NFC_RF_TARGET) { | |
236 | rc = -EOPNOTSUPP; | |
237 | goto error; | |
238 | } | |
239 | ||
240 | rc = dev->ops->dep_link_down(dev); | |
241 | if (!rc) { | |
242 | dev->dep_link_up = false; | |
d646960f | 243 | nfc_llcp_mac_is_down(dev); |
1ed28f61 SO |
244 | nfc_genl_dep_link_down_event(dev); |
245 | } | |
246 | ||
247 | error: | |
248 | device_unlock(&dev->dev); | |
249 | return rc; | |
250 | } | |
251 | ||
252 | int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx, | |
253 | u8 comm_mode, u8 rf_mode) | |
254 | { | |
255 | dev->dep_link_up = true; | |
256 | dev->dep_rf_mode = rf_mode; | |
257 | ||
d646960f SO |
258 | nfc_llcp_mac_is_up(dev, target_idx, comm_mode, rf_mode); |
259 | ||
1ed28f61 SO |
260 | return nfc_genl_dep_link_up_event(dev, target_idx, comm_mode, rf_mode); |
261 | } | |
262 | EXPORT_SYMBOL(nfc_dep_link_is_up); | |
263 | ||
3e256b8f LRV |
264 | /** |
265 | * nfc_activate_target - prepare the target for data exchange | |
266 | * | |
267 | * @dev: The nfc device that found the target | |
268 | * @target_idx: index of the target that must be activated | |
269 | * @protocol: nfc protocol that will be used for data exchange | |
270 | */ | |
271 | int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol) | |
272 | { | |
273 | int rc; | |
274 | ||
20c239c1 JP |
275 | pr_debug("dev_name=%s target_idx=%u protocol=%u\n", |
276 | dev_name(&dev->dev), target_idx, protocol); | |
3e256b8f LRV |
277 | |
278 | device_lock(&dev->dev); | |
279 | ||
280 | if (!device_is_registered(&dev->dev)) { | |
281 | rc = -ENODEV; | |
282 | goto error; | |
283 | } | |
284 | ||
285 | rc = dev->ops->activate_target(dev, target_idx, protocol); | |
8b3fe7b5 IE |
286 | if (!rc) |
287 | dev->remote_activated = true; | |
3e256b8f LRV |
288 | |
289 | error: | |
290 | device_unlock(&dev->dev); | |
291 | return rc; | |
292 | } | |
293 | ||
294 | /** | |
295 | * nfc_deactivate_target - deactivate a nfc target | |
296 | * | |
297 | * @dev: The nfc device that found the target | |
298 | * @target_idx: index of the target that must be deactivated | |
299 | */ | |
300 | int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx) | |
301 | { | |
302 | int rc = 0; | |
303 | ||
20c239c1 JP |
304 | pr_debug("dev_name=%s target_idx=%u\n", |
305 | dev_name(&dev->dev), target_idx); | |
3e256b8f LRV |
306 | |
307 | device_lock(&dev->dev); | |
308 | ||
309 | if (!device_is_registered(&dev->dev)) { | |
310 | rc = -ENODEV; | |
311 | goto error; | |
312 | } | |
313 | ||
314 | dev->ops->deactivate_target(dev, target_idx); | |
8b3fe7b5 | 315 | dev->remote_activated = false; |
3e256b8f LRV |
316 | |
317 | error: | |
318 | device_unlock(&dev->dev); | |
319 | return rc; | |
320 | } | |
321 | ||
322 | /** | |
323 | * nfc_data_exchange - transceive data | |
324 | * | |
325 | * @dev: The nfc device that found the target | |
326 | * @target_idx: index of the target | |
327 | * @skb: data to be sent | |
328 | * @cb: callback called when the response is received | |
329 | * @cb_context: parameter for the callback function | |
330 | * | |
331 | * The user must wait for the callback before calling this function again. | |
332 | */ | |
333 | int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, | |
334 | struct sk_buff *skb, | |
335 | data_exchange_cb_t cb, | |
336 | void *cb_context) | |
337 | { | |
338 | int rc; | |
339 | ||
20c239c1 JP |
340 | pr_debug("dev_name=%s target_idx=%u skb->len=%u\n", |
341 | dev_name(&dev->dev), target_idx, skb->len); | |
3e256b8f LRV |
342 | |
343 | device_lock(&dev->dev); | |
344 | ||
345 | if (!device_is_registered(&dev->dev)) { | |
346 | rc = -ENODEV; | |
347 | kfree_skb(skb); | |
348 | goto error; | |
349 | } | |
350 | ||
351 | rc = dev->ops->data_exchange(dev, target_idx, skb, cb, cb_context); | |
352 | ||
353 | error: | |
354 | device_unlock(&dev->dev); | |
355 | return rc; | |
356 | } | |
357 | ||
541d920b SO |
358 | int nfc_set_remote_general_bytes(struct nfc_dev *dev, u8 *gb, u8 gb_len) |
359 | { | |
360 | pr_debug("dev_name=%s gb_len=%d\n", | |
361 | dev_name(&dev->dev), gb_len); | |
362 | ||
363 | if (gb_len > NFC_MAX_GT_LEN) | |
364 | return -EINVAL; | |
365 | ||
d646960f | 366 | return nfc_llcp_set_remote_gb(dev, gb, gb_len); |
541d920b SO |
367 | } |
368 | EXPORT_SYMBOL(nfc_set_remote_general_bytes); | |
369 | ||
370 | u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, u8 *gt_len) | |
371 | { | |
d646960f | 372 | return nfc_llcp_general_bytes(dev, gt_len); |
541d920b SO |
373 | } |
374 | EXPORT_SYMBOL(nfc_get_local_general_bytes); | |
375 | ||
3e256b8f | 376 | /** |
7c7cd3bf | 377 | * nfc_alloc_send_skb - allocate a skb for data exchange responses |
3e256b8f LRV |
378 | * |
379 | * @size: size to allocate | |
380 | * @gfp: gfp flags | |
381 | */ | |
7c7cd3bf SO |
382 | struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, |
383 | unsigned int flags, unsigned int size, | |
384 | unsigned int *err) | |
385 | { | |
386 | struct sk_buff *skb; | |
387 | unsigned int total_size; | |
388 | ||
389 | total_size = size + | |
390 | dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE; | |
391 | ||
392 | skb = sock_alloc_send_skb(sk, total_size, flags & MSG_DONTWAIT, err); | |
393 | if (skb) | |
394 | skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE); | |
395 | ||
396 | return skb; | |
397 | } | |
398 | ||
399 | /** | |
400 | * nfc_alloc_recv_skb - allocate a skb for data exchange responses | |
401 | * | |
402 | * @size: size to allocate | |
403 | * @gfp: gfp flags | |
404 | */ | |
405 | struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp) | |
3e256b8f LRV |
406 | { |
407 | struct sk_buff *skb; | |
408 | unsigned int total_size; | |
409 | ||
410 | total_size = size + 1; | |
411 | skb = alloc_skb(total_size, gfp); | |
412 | ||
413 | if (skb) | |
414 | skb_reserve(skb, 1); | |
415 | ||
416 | return skb; | |
417 | } | |
7c7cd3bf | 418 | EXPORT_SYMBOL(nfc_alloc_recv_skb); |
3e256b8f | 419 | |
4d12b8b1 LRV |
420 | /** |
421 | * nfc_targets_found - inform that targets were found | |
422 | * | |
423 | * @dev: The nfc device that found the targets | |
424 | * @targets: array of nfc targets found | |
425 | * @ntargets: targets array size | |
426 | * | |
427 | * The device driver must call this function when one or many nfc targets | |
428 | * are found. After calling this function, the device driver must stop | |
429 | * polling for targets. | |
430 | */ | |
431 | int nfc_targets_found(struct nfc_dev *dev, struct nfc_target *targets, | |
432 | int n_targets) | |
433 | { | |
20c239c1 | 434 | pr_debug("dev_name=%s n_targets=%d\n", dev_name(&dev->dev), n_targets); |
4d12b8b1 LRV |
435 | |
436 | dev->polling = false; | |
437 | ||
4d12b8b1 LRV |
438 | spin_lock_bh(&dev->targets_lock); |
439 | ||
440 | dev->targets_generation++; | |
441 | ||
442 | kfree(dev->targets); | |
443 | dev->targets = kmemdup(targets, n_targets * sizeof(struct nfc_target), | |
444 | GFP_ATOMIC); | |
445 | ||
446 | if (!dev->targets) { | |
447 | dev->n_targets = 0; | |
448 | spin_unlock_bh(&dev->targets_lock); | |
449 | return -ENOMEM; | |
450 | } | |
451 | ||
452 | dev->n_targets = n_targets; | |
453 | spin_unlock_bh(&dev->targets_lock); | |
454 | ||
455 | nfc_genl_targets_found(dev); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | EXPORT_SYMBOL(nfc_targets_found); | |
460 | ||
3e256b8f LRV |
461 | static void nfc_release(struct device *d) |
462 | { | |
463 | struct nfc_dev *dev = to_nfc_dev(d); | |
464 | ||
20c239c1 | 465 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f | 466 | |
4d12b8b1 LRV |
467 | nfc_genl_data_exit(&dev->genl_data); |
468 | kfree(dev->targets); | |
3e256b8f LRV |
469 | kfree(dev); |
470 | } | |
471 | ||
472 | struct class nfc_class = { | |
473 | .name = "nfc", | |
474 | .dev_release = nfc_release, | |
475 | }; | |
476 | EXPORT_SYMBOL(nfc_class); | |
477 | ||
478 | static int match_idx(struct device *d, void *data) | |
479 | { | |
480 | struct nfc_dev *dev = to_nfc_dev(d); | |
481 | unsigned *idx = data; | |
482 | ||
483 | return dev->idx == *idx; | |
484 | } | |
485 | ||
486 | struct nfc_dev *nfc_get_device(unsigned idx) | |
487 | { | |
488 | struct device *d; | |
489 | ||
490 | d = class_find_device(&nfc_class, NULL, &idx, match_idx); | |
491 | if (!d) | |
492 | return NULL; | |
493 | ||
494 | return to_nfc_dev(d); | |
495 | } | |
496 | ||
497 | /** | |
498 | * nfc_allocate_device - allocate a new nfc device | |
499 | * | |
500 | * @ops: device operations | |
501 | * @supported_protocols: NFC protocols supported by the device | |
502 | */ | |
503 | struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, | |
e8753043 SO |
504 | u32 supported_protocols, |
505 | int tx_headroom, | |
506 | int tx_tailroom) | |
3e256b8f LRV |
507 | { |
508 | static atomic_t dev_no = ATOMIC_INIT(0); | |
509 | struct nfc_dev *dev; | |
510 | ||
511 | if (!ops->start_poll || !ops->stop_poll || !ops->activate_target || | |
512 | !ops->deactivate_target || !ops->data_exchange) | |
513 | return NULL; | |
514 | ||
515 | if (!supported_protocols) | |
516 | return NULL; | |
517 | ||
518 | dev = kzalloc(sizeof(struct nfc_dev), GFP_KERNEL); | |
519 | if (!dev) | |
520 | return NULL; | |
521 | ||
522 | dev->dev.class = &nfc_class; | |
523 | dev->idx = atomic_inc_return(&dev_no) - 1; | |
524 | dev_set_name(&dev->dev, "nfc%d", dev->idx); | |
525 | device_initialize(&dev->dev); | |
526 | ||
527 | dev->ops = ops; | |
528 | dev->supported_protocols = supported_protocols; | |
e8753043 SO |
529 | dev->tx_headroom = tx_headroom; |
530 | dev->tx_tailroom = tx_tailroom; | |
3e256b8f | 531 | |
4d12b8b1 LRV |
532 | spin_lock_init(&dev->targets_lock); |
533 | nfc_genl_data_init(&dev->genl_data); | |
534 | ||
535 | /* first generation must not be 0 */ | |
536 | dev->targets_generation = 1; | |
537 | ||
3e256b8f LRV |
538 | return dev; |
539 | } | |
540 | EXPORT_SYMBOL(nfc_allocate_device); | |
541 | ||
542 | /** | |
543 | * nfc_register_device - register a nfc device in the nfc subsystem | |
544 | * | |
545 | * @dev: The nfc device to register | |
546 | */ | |
547 | int nfc_register_device(struct nfc_dev *dev) | |
548 | { | |
549 | int rc; | |
550 | ||
20c239c1 | 551 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f LRV |
552 | |
553 | mutex_lock(&nfc_devlist_mutex); | |
554 | nfc_devlist_generation++; | |
555 | rc = device_add(&dev->dev); | |
556 | mutex_unlock(&nfc_devlist_mutex); | |
557 | ||
4d12b8b1 LRV |
558 | if (rc < 0) |
559 | return rc; | |
560 | ||
d646960f SO |
561 | rc = nfc_llcp_register_device(dev); |
562 | if (rc) | |
563 | pr_err("Could not register llcp device\n"); | |
564 | ||
4d12b8b1 LRV |
565 | rc = nfc_genl_device_added(dev); |
566 | if (rc) | |
20c239c1 JP |
567 | pr_debug("The userspace won't be notified that the device %s was added\n", |
568 | dev_name(&dev->dev)); | |
4d12b8b1 LRV |
569 | |
570 | return 0; | |
3e256b8f LRV |
571 | } |
572 | EXPORT_SYMBOL(nfc_register_device); | |
573 | ||
574 | /** | |
575 | * nfc_unregister_device - unregister a nfc device in the nfc subsystem | |
576 | * | |
577 | * @dev: The nfc device to unregister | |
578 | */ | |
579 | void nfc_unregister_device(struct nfc_dev *dev) | |
580 | { | |
4d12b8b1 LRV |
581 | int rc; |
582 | ||
20c239c1 | 583 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f LRV |
584 | |
585 | mutex_lock(&nfc_devlist_mutex); | |
586 | nfc_devlist_generation++; | |
587 | ||
588 | /* lock to avoid unregistering a device while an operation | |
589 | is in progress */ | |
590 | device_lock(&dev->dev); | |
591 | device_del(&dev->dev); | |
592 | device_unlock(&dev->dev); | |
593 | ||
594 | mutex_unlock(&nfc_devlist_mutex); | |
4d12b8b1 | 595 | |
d646960f SO |
596 | nfc_llcp_unregister_device(dev); |
597 | ||
4d12b8b1 LRV |
598 | rc = nfc_genl_device_removed(dev); |
599 | if (rc) | |
20c239c1 JP |
600 | pr_debug("The userspace won't be notified that the device %s was removed\n", |
601 | dev_name(&dev->dev)); | |
4d12b8b1 | 602 | |
3e256b8f LRV |
603 | } |
604 | EXPORT_SYMBOL(nfc_unregister_device); | |
605 | ||
606 | static int __init nfc_init(void) | |
607 | { | |
4d12b8b1 LRV |
608 | int rc; |
609 | ||
ed1e0ad8 | 610 | pr_info("NFC Core ver %s\n", VERSION); |
3e256b8f | 611 | |
4d12b8b1 LRV |
612 | rc = class_register(&nfc_class); |
613 | if (rc) | |
614 | return rc; | |
615 | ||
616 | rc = nfc_genl_init(); | |
617 | if (rc) | |
618 | goto err_genl; | |
619 | ||
620 | /* the first generation must not be 0 */ | |
621 | nfc_devlist_generation = 1; | |
622 | ||
23b7869c LRV |
623 | rc = rawsock_init(); |
624 | if (rc) | |
625 | goto err_rawsock; | |
626 | ||
d646960f SO |
627 | rc = nfc_llcp_init(); |
628 | if (rc) | |
629 | goto err_llcp_sock; | |
630 | ||
c7fe3b52 AAJ |
631 | rc = af_nfc_init(); |
632 | if (rc) | |
633 | goto err_af_nfc; | |
634 | ||
4d12b8b1 LRV |
635 | return 0; |
636 | ||
c7fe3b52 | 637 | err_af_nfc: |
d646960f SO |
638 | nfc_llcp_exit(); |
639 | err_llcp_sock: | |
23b7869c LRV |
640 | rawsock_exit(); |
641 | err_rawsock: | |
c7fe3b52 | 642 | nfc_genl_exit(); |
4d12b8b1 LRV |
643 | err_genl: |
644 | class_unregister(&nfc_class); | |
645 | return rc; | |
3e256b8f LRV |
646 | } |
647 | ||
648 | static void __exit nfc_exit(void) | |
649 | { | |
c7fe3b52 | 650 | af_nfc_exit(); |
d646960f | 651 | nfc_llcp_exit(); |
23b7869c | 652 | rawsock_exit(); |
4d12b8b1 | 653 | nfc_genl_exit(); |
3e256b8f LRV |
654 | class_unregister(&nfc_class); |
655 | } | |
656 | ||
657 | subsys_initcall(nfc_init); | |
658 | module_exit(nfc_exit); | |
659 | ||
660 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); | |
661 | MODULE_DESCRIPTION("NFC Core ver " VERSION); | |
662 | MODULE_VERSION(VERSION); | |
663 | MODULE_LICENSE("GPL"); |