Commit | Line | Data |
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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> | |
be055b2f | 30 | #include <linux/rfkill.h> |
7c7cd3bf | 31 | #include <linux/nfc.h> |
3e256b8f | 32 | |
5df16cad SO |
33 | #include <net/genetlink.h> |
34 | ||
3e256b8f LRV |
35 | #include "nfc.h" |
36 | ||
37 | #define VERSION "0.1" | |
38 | ||
c8d56ae7 EL |
39 | #define NFC_CHECK_PRES_FREQ_MS 2000 |
40 | ||
3e256b8f LRV |
41 | int nfc_devlist_generation; |
42 | DEFINE_MUTEX(nfc_devlist_mutex); | |
43 | ||
7eda8b8e SO |
44 | /* NFC device ID bitmap */ |
45 | static DEFINE_IDA(nfc_index_ida); | |
46 | ||
9ea7187c | 47 | int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name) |
9674da87 EL |
48 | { |
49 | int rc = 0; | |
50 | ||
51 | pr_debug("%s do firmware %s\n", dev_name(&dev->dev), firmware_name); | |
52 | ||
53 | device_lock(&dev->dev); | |
54 | ||
55 | if (!device_is_registered(&dev->dev)) { | |
56 | rc = -ENODEV; | |
57 | goto error; | |
58 | } | |
59 | ||
60 | if (dev->dev_up) { | |
61 | rc = -EBUSY; | |
62 | goto error; | |
63 | } | |
64 | ||
9ea7187c | 65 | if (!dev->ops->fw_download) { |
9674da87 EL |
66 | rc = -EOPNOTSUPP; |
67 | goto error; | |
68 | } | |
69 | ||
9ea7187c SO |
70 | dev->fw_download_in_progress = true; |
71 | rc = dev->ops->fw_download(dev, firmware_name); | |
9674da87 | 72 | if (rc) |
9ea7187c | 73 | dev->fw_download_in_progress = false; |
9674da87 EL |
74 | |
75 | error: | |
76 | device_unlock(&dev->dev); | |
77 | return rc; | |
78 | } | |
79 | ||
9ea7187c | 80 | int nfc_fw_download_done(struct nfc_dev *dev, const char *firmware_name) |
9674da87 | 81 | { |
9ea7187c | 82 | dev->fw_download_in_progress = false; |
9674da87 | 83 | |
9ea7187c | 84 | return nfc_genl_fw_download_done(dev, firmware_name); |
9674da87 | 85 | } |
9ea7187c | 86 | EXPORT_SYMBOL(nfc_fw_download_done); |
9674da87 | 87 | |
8b3fe7b5 IE |
88 | /** |
89 | * nfc_dev_up - turn on the NFC device | |
90 | * | |
91 | * @dev: The nfc device to be turned on | |
92 | * | |
93 | * The device remains up until the nfc_dev_down function is called. | |
94 | */ | |
95 | int nfc_dev_up(struct nfc_dev *dev) | |
96 | { | |
97 | int rc = 0; | |
98 | ||
20c239c1 | 99 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
8b3fe7b5 IE |
100 | |
101 | device_lock(&dev->dev); | |
102 | ||
be055b2f SO |
103 | if (dev->rfkill && rfkill_blocked(dev->rfkill)) { |
104 | rc = -ERFKILL; | |
105 | goto error; | |
106 | } | |
107 | ||
8b3fe7b5 IE |
108 | if (!device_is_registered(&dev->dev)) { |
109 | rc = -ENODEV; | |
110 | goto error; | |
111 | } | |
112 | ||
9ea7187c | 113 | if (dev->fw_download_in_progress) { |
9674da87 EL |
114 | rc = -EBUSY; |
115 | goto error; | |
116 | } | |
117 | ||
8b3fe7b5 IE |
118 | if (dev->dev_up) { |
119 | rc = -EALREADY; | |
120 | goto error; | |
121 | } | |
122 | ||
123 | if (dev->ops->dev_up) | |
124 | rc = dev->ops->dev_up(dev); | |
125 | ||
126 | if (!rc) | |
127 | dev->dev_up = true; | |
128 | ||
0a946301 SO |
129 | /* We have to enable the device before discovering SEs */ |
130 | if (dev->ops->discover_se) { | |
131 | rc = dev->ops->discover_se(dev); | |
369f4d50 | 132 | if (rc) |
0a946301 SO |
133 | pr_warn("SE discovery failed\n"); |
134 | } | |
135 | ||
8b3fe7b5 IE |
136 | error: |
137 | device_unlock(&dev->dev); | |
138 | return rc; | |
139 | } | |
140 | ||
141 | /** | |
142 | * nfc_dev_down - turn off the NFC device | |
143 | * | |
144 | * @dev: The nfc device to be turned off | |
145 | */ | |
146 | int nfc_dev_down(struct nfc_dev *dev) | |
147 | { | |
148 | int rc = 0; | |
149 | ||
20c239c1 | 150 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
8b3fe7b5 IE |
151 | |
152 | device_lock(&dev->dev); | |
153 | ||
154 | if (!device_is_registered(&dev->dev)) { | |
155 | rc = -ENODEV; | |
156 | goto error; | |
157 | } | |
158 | ||
159 | if (!dev->dev_up) { | |
160 | rc = -EALREADY; | |
161 | goto error; | |
162 | } | |
163 | ||
90099433 | 164 | if (dev->polling || dev->active_target) { |
8b3fe7b5 IE |
165 | rc = -EBUSY; |
166 | goto error; | |
167 | } | |
168 | ||
169 | if (dev->ops->dev_down) | |
170 | dev->ops->dev_down(dev); | |
171 | ||
172 | dev->dev_up = false; | |
173 | ||
174 | error: | |
175 | device_unlock(&dev->dev); | |
176 | return rc; | |
177 | } | |
178 | ||
be055b2f SO |
179 | static int nfc_rfkill_set_block(void *data, bool blocked) |
180 | { | |
181 | struct nfc_dev *dev = data; | |
182 | ||
183 | pr_debug("%s blocked %d", dev_name(&dev->dev), blocked); | |
184 | ||
185 | if (!blocked) | |
186 | return 0; | |
187 | ||
188 | nfc_dev_down(dev); | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | static const struct rfkill_ops nfc_rfkill_ops = { | |
194 | .set_block = nfc_rfkill_set_block, | |
195 | }; | |
196 | ||
3e256b8f LRV |
197 | /** |
198 | * nfc_start_poll - start polling for nfc targets | |
199 | * | |
200 | * @dev: The nfc device that must start polling | |
201 | * @protocols: bitset of nfc protocols that must be used for polling | |
202 | * | |
203 | * The device remains polling for targets until a target is found or | |
204 | * the nfc_stop_poll function is called. | |
205 | */ | |
fe7c5800 | 206 | int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols) |
3e256b8f LRV |
207 | { |
208 | int rc; | |
209 | ||
fe7c5800 SO |
210 | pr_debug("dev_name %s initiator protocols 0x%x target protocols 0x%x\n", |
211 | dev_name(&dev->dev), im_protocols, tm_protocols); | |
3e256b8f | 212 | |
fe7c5800 | 213 | if (!im_protocols && !tm_protocols) |
3e256b8f LRV |
214 | return -EINVAL; |
215 | ||
216 | device_lock(&dev->dev); | |
217 | ||
218 | if (!device_is_registered(&dev->dev)) { | |
219 | rc = -ENODEV; | |
220 | goto error; | |
221 | } | |
222 | ||
7757dc8a SO |
223 | if (!dev->dev_up) { |
224 | rc = -ENODEV; | |
225 | goto error; | |
226 | } | |
227 | ||
3e256b8f LRV |
228 | if (dev->polling) { |
229 | rc = -EBUSY; | |
230 | goto error; | |
231 | } | |
232 | ||
fe7c5800 | 233 | rc = dev->ops->start_poll(dev, im_protocols, tm_protocols); |
f212ad5e | 234 | if (!rc) { |
3e256b8f | 235 | dev->polling = true; |
f212ad5e SO |
236 | dev->rf_mode = NFC_RF_NONE; |
237 | } | |
3e256b8f LRV |
238 | |
239 | error: | |
240 | device_unlock(&dev->dev); | |
241 | return rc; | |
242 | } | |
243 | ||
244 | /** | |
245 | * nfc_stop_poll - stop polling for nfc targets | |
246 | * | |
247 | * @dev: The nfc device that must stop polling | |
248 | */ | |
249 | int nfc_stop_poll(struct nfc_dev *dev) | |
250 | { | |
251 | int rc = 0; | |
252 | ||
20c239c1 | 253 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f LRV |
254 | |
255 | device_lock(&dev->dev); | |
256 | ||
257 | if (!device_is_registered(&dev->dev)) { | |
258 | rc = -ENODEV; | |
259 | goto error; | |
260 | } | |
261 | ||
262 | if (!dev->polling) { | |
263 | rc = -EINVAL; | |
264 | goto error; | |
265 | } | |
266 | ||
267 | dev->ops->stop_poll(dev); | |
268 | dev->polling = false; | |
5bcf099c | 269 | dev->rf_mode = NFC_RF_NONE; |
3e256b8f LRV |
270 | |
271 | error: | |
272 | device_unlock(&dev->dev); | |
273 | return rc; | |
274 | } | |
275 | ||
90099433 EL |
276 | static struct nfc_target *nfc_find_target(struct nfc_dev *dev, u32 target_idx) |
277 | { | |
278 | int i; | |
279 | ||
280 | if (dev->n_targets == 0) | |
281 | return NULL; | |
282 | ||
0f450772 | 283 | for (i = 0; i < dev->n_targets; i++) { |
90099433 EL |
284 | if (dev->targets[i].idx == target_idx) |
285 | return &dev->targets[i]; | |
286 | } | |
287 | ||
288 | return NULL; | |
289 | } | |
290 | ||
47807d3d | 291 | int nfc_dep_link_up(struct nfc_dev *dev, int target_index, u8 comm_mode) |
1ed28f61 SO |
292 | { |
293 | int rc = 0; | |
47807d3d SO |
294 | u8 *gb; |
295 | size_t gb_len; | |
90099433 | 296 | struct nfc_target *target; |
1ed28f61 | 297 | |
47807d3d | 298 | pr_debug("dev_name=%s comm %d\n", dev_name(&dev->dev), comm_mode); |
1ed28f61 SO |
299 | |
300 | if (!dev->ops->dep_link_up) | |
301 | return -EOPNOTSUPP; | |
302 | ||
303 | device_lock(&dev->dev); | |
304 | ||
305 | if (!device_is_registered(&dev->dev)) { | |
306 | rc = -ENODEV; | |
307 | goto error; | |
308 | } | |
309 | ||
310 | if (dev->dep_link_up == true) { | |
311 | rc = -EALREADY; | |
312 | goto error; | |
313 | } | |
314 | ||
47807d3d SO |
315 | gb = nfc_llcp_general_bytes(dev, &gb_len); |
316 | if (gb_len > NFC_MAX_GT_LEN) { | |
317 | rc = -EINVAL; | |
318 | goto error; | |
319 | } | |
320 | ||
90099433 EL |
321 | target = nfc_find_target(dev, target_index); |
322 | if (target == NULL) { | |
323 | rc = -ENOTCONN; | |
324 | goto error; | |
325 | } | |
326 | ||
327 | rc = dev->ops->dep_link_up(dev, target, comm_mode, gb, gb_len); | |
f212ad5e | 328 | if (!rc) { |
90099433 | 329 | dev->active_target = target; |
f212ad5e SO |
330 | dev->rf_mode = NFC_RF_INITIATOR; |
331 | } | |
1ed28f61 SO |
332 | |
333 | error: | |
334 | device_unlock(&dev->dev); | |
335 | return rc; | |
336 | } | |
337 | ||
338 | int nfc_dep_link_down(struct nfc_dev *dev) | |
339 | { | |
340 | int rc = 0; | |
341 | ||
342 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); | |
343 | ||
344 | if (!dev->ops->dep_link_down) | |
345 | return -EOPNOTSUPP; | |
346 | ||
347 | device_lock(&dev->dev); | |
348 | ||
349 | if (!device_is_registered(&dev->dev)) { | |
350 | rc = -ENODEV; | |
351 | goto error; | |
352 | } | |
353 | ||
354 | if (dev->dep_link_up == false) { | |
355 | rc = -EALREADY; | |
356 | goto error; | |
357 | } | |
358 | ||
1ed28f61 SO |
359 | rc = dev->ops->dep_link_down(dev); |
360 | if (!rc) { | |
361 | dev->dep_link_up = false; | |
90099433 | 362 | dev->active_target = NULL; |
5bcf099c | 363 | dev->rf_mode = NFC_RF_NONE; |
d646960f | 364 | nfc_llcp_mac_is_down(dev); |
1ed28f61 SO |
365 | nfc_genl_dep_link_down_event(dev); |
366 | } | |
367 | ||
368 | error: | |
369 | device_unlock(&dev->dev); | |
5bcf099c | 370 | |
1ed28f61 SO |
371 | return rc; |
372 | } | |
373 | ||
374 | int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx, | |
0a40acb2 | 375 | u8 comm_mode, u8 rf_mode) |
1ed28f61 SO |
376 | { |
377 | dev->dep_link_up = true; | |
1ed28f61 | 378 | |
d646960f SO |
379 | nfc_llcp_mac_is_up(dev, target_idx, comm_mode, rf_mode); |
380 | ||
1ed28f61 SO |
381 | return nfc_genl_dep_link_up_event(dev, target_idx, comm_mode, rf_mode); |
382 | } | |
383 | EXPORT_SYMBOL(nfc_dep_link_is_up); | |
384 | ||
3e256b8f LRV |
385 | /** |
386 | * nfc_activate_target - prepare the target for data exchange | |
387 | * | |
388 | * @dev: The nfc device that found the target | |
389 | * @target_idx: index of the target that must be activated | |
390 | * @protocol: nfc protocol that will be used for data exchange | |
391 | */ | |
392 | int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol) | |
393 | { | |
394 | int rc; | |
90099433 | 395 | struct nfc_target *target; |
3e256b8f | 396 | |
20c239c1 JP |
397 | pr_debug("dev_name=%s target_idx=%u protocol=%u\n", |
398 | dev_name(&dev->dev), target_idx, protocol); | |
3e256b8f LRV |
399 | |
400 | device_lock(&dev->dev); | |
401 | ||
402 | if (!device_is_registered(&dev->dev)) { | |
403 | rc = -ENODEV; | |
404 | goto error; | |
405 | } | |
406 | ||
90099433 EL |
407 | if (dev->active_target) { |
408 | rc = -EBUSY; | |
409 | goto error; | |
410 | } | |
411 | ||
412 | target = nfc_find_target(dev, target_idx); | |
413 | if (target == NULL) { | |
414 | rc = -ENOTCONN; | |
415 | goto error; | |
416 | } | |
417 | ||
418 | rc = dev->ops->activate_target(dev, target, protocol); | |
c8d56ae7 | 419 | if (!rc) { |
90099433 | 420 | dev->active_target = target; |
f212ad5e | 421 | dev->rf_mode = NFC_RF_INITIATOR; |
3e256b8f | 422 | |
f0c91038 | 423 | if (dev->ops->check_presence && !dev->shutting_down) |
c8d56ae7 EL |
424 | mod_timer(&dev->check_pres_timer, jiffies + |
425 | msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS)); | |
426 | } | |
3e256b8f LRV |
427 | |
428 | error: | |
429 | device_unlock(&dev->dev); | |
430 | return rc; | |
431 | } | |
432 | ||
433 | /** | |
434 | * nfc_deactivate_target - deactivate a nfc target | |
435 | * | |
436 | * @dev: The nfc device that found the target | |
437 | * @target_idx: index of the target that must be deactivated | |
438 | */ | |
439 | int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx) | |
440 | { | |
441 | int rc = 0; | |
442 | ||
20c239c1 JP |
443 | pr_debug("dev_name=%s target_idx=%u\n", |
444 | dev_name(&dev->dev), target_idx); | |
3e256b8f LRV |
445 | |
446 | device_lock(&dev->dev); | |
447 | ||
448 | if (!device_is_registered(&dev->dev)) { | |
449 | rc = -ENODEV; | |
450 | goto error; | |
451 | } | |
452 | ||
90099433 EL |
453 | if (dev->active_target == NULL) { |
454 | rc = -ENOTCONN; | |
455 | goto error; | |
456 | } | |
457 | ||
458 | if (dev->active_target->idx != target_idx) { | |
459 | rc = -ENOTCONN; | |
460 | goto error; | |
461 | } | |
462 | ||
c8d56ae7 EL |
463 | if (dev->ops->check_presence) |
464 | del_timer_sync(&dev->check_pres_timer); | |
465 | ||
90099433 EL |
466 | dev->ops->deactivate_target(dev, dev->active_target); |
467 | dev->active_target = NULL; | |
3e256b8f LRV |
468 | |
469 | error: | |
470 | device_unlock(&dev->dev); | |
471 | return rc; | |
472 | } | |
473 | ||
474 | /** | |
475 | * nfc_data_exchange - transceive data | |
476 | * | |
477 | * @dev: The nfc device that found the target | |
478 | * @target_idx: index of the target | |
479 | * @skb: data to be sent | |
480 | * @cb: callback called when the response is received | |
481 | * @cb_context: parameter for the callback function | |
482 | * | |
483 | * The user must wait for the callback before calling this function again. | |
484 | */ | |
0a40acb2 SO |
485 | int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb, |
486 | data_exchange_cb_t cb, void *cb_context) | |
3e256b8f LRV |
487 | { |
488 | int rc; | |
489 | ||
20c239c1 JP |
490 | pr_debug("dev_name=%s target_idx=%u skb->len=%u\n", |
491 | dev_name(&dev->dev), target_idx, skb->len); | |
3e256b8f LRV |
492 | |
493 | device_lock(&dev->dev); | |
494 | ||
495 | if (!device_is_registered(&dev->dev)) { | |
496 | rc = -ENODEV; | |
497 | kfree_skb(skb); | |
498 | goto error; | |
499 | } | |
500 | ||
be9ae4ce SO |
501 | if (dev->rf_mode == NFC_RF_INITIATOR && dev->active_target != NULL) { |
502 | if (dev->active_target->idx != target_idx) { | |
503 | rc = -EADDRNOTAVAIL; | |
504 | kfree_skb(skb); | |
505 | goto error; | |
506 | } | |
144612ca | 507 | |
be9ae4ce SO |
508 | if (dev->ops->check_presence) |
509 | del_timer_sync(&dev->check_pres_timer); | |
510 | ||
511 | rc = dev->ops->im_transceive(dev, dev->active_target, skb, cb, | |
512 | cb_context); | |
513 | ||
f0c91038 | 514 | if (!rc && dev->ops->check_presence && !dev->shutting_down) |
be9ae4ce SO |
515 | mod_timer(&dev->check_pres_timer, jiffies + |
516 | msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS)); | |
517 | } else if (dev->rf_mode == NFC_RF_TARGET && dev->ops->tm_send != NULL) { | |
518 | rc = dev->ops->tm_send(dev, skb); | |
519 | } else { | |
520 | rc = -ENOTCONN; | |
144612ca EL |
521 | kfree_skb(skb); |
522 | goto error; | |
523 | } | |
524 | ||
c8d56ae7 | 525 | |
3e256b8f LRV |
526 | error: |
527 | device_unlock(&dev->dev); | |
528 | return rc; | |
529 | } | |
530 | ||
c531c9ec SO |
531 | static struct nfc_se *find_se(struct nfc_dev *dev, u32 se_idx) |
532 | { | |
533 | struct nfc_se *se, *n; | |
534 | ||
535 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) | |
536 | if (se->idx == se_idx) | |
537 | return se; | |
538 | ||
539 | return NULL; | |
540 | } | |
541 | ||
542 | int nfc_enable_se(struct nfc_dev *dev, u32 se_idx) | |
543 | { | |
544 | ||
545 | struct nfc_se *se; | |
546 | int rc; | |
547 | ||
548 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
549 | ||
550 | device_lock(&dev->dev); | |
551 | ||
552 | if (!device_is_registered(&dev->dev)) { | |
553 | rc = -ENODEV; | |
554 | goto error; | |
555 | } | |
556 | ||
557 | if (!dev->dev_up) { | |
558 | rc = -ENODEV; | |
559 | goto error; | |
560 | } | |
561 | ||
562 | if (dev->polling) { | |
563 | rc = -EBUSY; | |
564 | goto error; | |
565 | } | |
566 | ||
567 | if (!dev->ops->enable_se || !dev->ops->disable_se) { | |
568 | rc = -EOPNOTSUPP; | |
569 | goto error; | |
570 | } | |
571 | ||
572 | se = find_se(dev, se_idx); | |
573 | if (!se) { | |
574 | rc = -EINVAL; | |
575 | goto error; | |
576 | } | |
577 | ||
578 | if (se->type == NFC_SE_ENABLED) { | |
579 | rc = -EALREADY; | |
580 | goto error; | |
581 | } | |
582 | ||
583 | rc = dev->ops->enable_se(dev, se_idx); | |
584 | ||
585 | error: | |
586 | device_unlock(&dev->dev); | |
587 | return rc; | |
588 | } | |
589 | ||
590 | int nfc_disable_se(struct nfc_dev *dev, u32 se_idx) | |
591 | { | |
592 | ||
593 | struct nfc_se *se; | |
594 | int rc; | |
595 | ||
596 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
597 | ||
598 | device_lock(&dev->dev); | |
599 | ||
600 | if (!device_is_registered(&dev->dev)) { | |
601 | rc = -ENODEV; | |
602 | goto error; | |
603 | } | |
604 | ||
605 | if (!dev->dev_up) { | |
606 | rc = -ENODEV; | |
607 | goto error; | |
608 | } | |
609 | ||
610 | if (!dev->ops->enable_se || !dev->ops->disable_se) { | |
611 | rc = -EOPNOTSUPP; | |
612 | goto error; | |
613 | } | |
614 | ||
615 | se = find_se(dev, se_idx); | |
616 | if (!se) { | |
617 | rc = -EINVAL; | |
618 | goto error; | |
619 | } | |
620 | ||
621 | if (se->type == NFC_SE_DISABLED) { | |
622 | rc = -EALREADY; | |
623 | goto error; | |
624 | } | |
625 | ||
626 | rc = dev->ops->disable_se(dev, se_idx); | |
627 | ||
628 | error: | |
629 | device_unlock(&dev->dev); | |
630 | return rc; | |
631 | } | |
632 | ||
541d920b SO |
633 | int nfc_set_remote_general_bytes(struct nfc_dev *dev, u8 *gb, u8 gb_len) |
634 | { | |
0a40acb2 | 635 | pr_debug("dev_name=%s gb_len=%d\n", dev_name(&dev->dev), gb_len); |
541d920b SO |
636 | |
637 | if (gb_len > NFC_MAX_GT_LEN) | |
638 | return -EINVAL; | |
639 | ||
d646960f | 640 | return nfc_llcp_set_remote_gb(dev, gb, gb_len); |
541d920b SO |
641 | } |
642 | EXPORT_SYMBOL(nfc_set_remote_general_bytes); | |
643 | ||
ab73b751 SO |
644 | u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, size_t *gb_len) |
645 | { | |
646 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); | |
647 | ||
648 | return nfc_llcp_general_bytes(dev, gb_len); | |
649 | } | |
650 | EXPORT_SYMBOL(nfc_get_local_general_bytes); | |
651 | ||
73167ced SO |
652 | int nfc_tm_data_received(struct nfc_dev *dev, struct sk_buff *skb) |
653 | { | |
654 | /* Only LLCP target mode for now */ | |
655 | if (dev->dep_link_up == false) { | |
656 | kfree_skb(skb); | |
657 | return -ENOLINK; | |
658 | } | |
659 | ||
660 | return nfc_llcp_data_received(dev, skb); | |
661 | } | |
662 | EXPORT_SYMBOL(nfc_tm_data_received); | |
663 | ||
fc40a8c1 SO |
664 | int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode, |
665 | u8 *gb, size_t gb_len) | |
666 | { | |
667 | int rc; | |
668 | ||
669 | device_lock(&dev->dev); | |
670 | ||
671 | dev->polling = false; | |
672 | ||
673 | if (gb != NULL) { | |
674 | rc = nfc_set_remote_general_bytes(dev, gb, gb_len); | |
675 | if (rc < 0) | |
676 | goto out; | |
677 | } | |
678 | ||
f212ad5e SO |
679 | dev->rf_mode = NFC_RF_TARGET; |
680 | ||
fc40a8c1 SO |
681 | if (protocol == NFC_PROTO_NFC_DEP_MASK) |
682 | nfc_dep_link_is_up(dev, 0, comm_mode, NFC_RF_TARGET); | |
683 | ||
684 | rc = nfc_genl_tm_activated(dev, protocol); | |
685 | ||
686 | out: | |
687 | device_unlock(&dev->dev); | |
688 | ||
689 | return rc; | |
690 | } | |
691 | EXPORT_SYMBOL(nfc_tm_activated); | |
692 | ||
693 | int nfc_tm_deactivated(struct nfc_dev *dev) | |
694 | { | |
695 | dev->dep_link_up = false; | |
5bcf099c | 696 | dev->rf_mode = NFC_RF_NONE; |
fc40a8c1 SO |
697 | |
698 | return nfc_genl_tm_deactivated(dev); | |
699 | } | |
700 | EXPORT_SYMBOL(nfc_tm_deactivated); | |
701 | ||
3e256b8f | 702 | /** |
7c7cd3bf | 703 | * nfc_alloc_send_skb - allocate a skb for data exchange responses |
3e256b8f LRV |
704 | * |
705 | * @size: size to allocate | |
706 | * @gfp: gfp flags | |
707 | */ | |
7c7cd3bf | 708 | struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, |
0a40acb2 SO |
709 | unsigned int flags, unsigned int size, |
710 | unsigned int *err) | |
7c7cd3bf SO |
711 | { |
712 | struct sk_buff *skb; | |
713 | unsigned int total_size; | |
714 | ||
715 | total_size = size + | |
716 | dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE; | |
717 | ||
718 | skb = sock_alloc_send_skb(sk, total_size, flags & MSG_DONTWAIT, err); | |
719 | if (skb) | |
720 | skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE); | |
721 | ||
722 | return skb; | |
723 | } | |
724 | ||
725 | /** | |
726 | * nfc_alloc_recv_skb - allocate a skb for data exchange responses | |
727 | * | |
728 | * @size: size to allocate | |
729 | * @gfp: gfp flags | |
730 | */ | |
731 | struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp) | |
3e256b8f LRV |
732 | { |
733 | struct sk_buff *skb; | |
734 | unsigned int total_size; | |
735 | ||
736 | total_size = size + 1; | |
737 | skb = alloc_skb(total_size, gfp); | |
738 | ||
739 | if (skb) | |
740 | skb_reserve(skb, 1); | |
741 | ||
742 | return skb; | |
743 | } | |
7c7cd3bf | 744 | EXPORT_SYMBOL(nfc_alloc_recv_skb); |
3e256b8f | 745 | |
4d12b8b1 LRV |
746 | /** |
747 | * nfc_targets_found - inform that targets were found | |
748 | * | |
749 | * @dev: The nfc device that found the targets | |
750 | * @targets: array of nfc targets found | |
751 | * @ntargets: targets array size | |
752 | * | |
753 | * The device driver must call this function when one or many nfc targets | |
754 | * are found. After calling this function, the device driver must stop | |
755 | * polling for targets. | |
d94f9c55 EL |
756 | * NOTE: This function can be called with targets=NULL and n_targets=0 to |
757 | * notify a driver error, meaning that the polling operation cannot complete. | |
d4ccb132 EL |
758 | * IMPORTANT: this function must not be called from an atomic context. |
759 | * In addition, it must also not be called from a context that would prevent | |
760 | * the NFC Core to call other nfc ops entry point concurrently. | |
4d12b8b1 | 761 | */ |
0a40acb2 SO |
762 | int nfc_targets_found(struct nfc_dev *dev, |
763 | struct nfc_target *targets, int n_targets) | |
4d12b8b1 | 764 | { |
c4fbb651 SO |
765 | int i; |
766 | ||
20c239c1 | 767 | pr_debug("dev_name=%s n_targets=%d\n", dev_name(&dev->dev), n_targets); |
4d12b8b1 | 768 | |
c4fbb651 | 769 | for (i = 0; i < n_targets; i++) |
01ae0eea | 770 | targets[i].idx = dev->target_next_idx++; |
c4fbb651 | 771 | |
d4ccb132 | 772 | device_lock(&dev->dev); |
4d12b8b1 | 773 | |
8668fdd6 EL |
774 | if (dev->polling == false) { |
775 | device_unlock(&dev->dev); | |
776 | return 0; | |
777 | } | |
778 | ||
779 | dev->polling = false; | |
780 | ||
4d12b8b1 LRV |
781 | dev->targets_generation++; |
782 | ||
783 | kfree(dev->targets); | |
d94f9c55 | 784 | dev->targets = NULL; |
4d12b8b1 | 785 | |
d94f9c55 EL |
786 | if (targets) { |
787 | dev->targets = kmemdup(targets, | |
788 | n_targets * sizeof(struct nfc_target), | |
789 | GFP_ATOMIC); | |
790 | ||
791 | if (!dev->targets) { | |
792 | dev->n_targets = 0; | |
793 | device_unlock(&dev->dev); | |
794 | return -ENOMEM; | |
795 | } | |
4d12b8b1 LRV |
796 | } |
797 | ||
798 | dev->n_targets = n_targets; | |
d4ccb132 | 799 | device_unlock(&dev->dev); |
4d12b8b1 LRV |
800 | |
801 | nfc_genl_targets_found(dev); | |
802 | ||
803 | return 0; | |
804 | } | |
805 | EXPORT_SYMBOL(nfc_targets_found); | |
806 | ||
d4ccb132 EL |
807 | /** |
808 | * nfc_target_lost - inform that an activated target went out of field | |
809 | * | |
810 | * @dev: The nfc device that had the activated target in field | |
811 | * @target_idx: the nfc index of the target | |
812 | * | |
813 | * The device driver must call this function when the activated target | |
814 | * goes out of the field. | |
815 | * IMPORTANT: this function must not be called from an atomic context. | |
816 | * In addition, it must also not be called from a context that would prevent | |
817 | * the NFC Core to call other nfc ops entry point concurrently. | |
818 | */ | |
e1da0efa EL |
819 | int nfc_target_lost(struct nfc_dev *dev, u32 target_idx) |
820 | { | |
821 | struct nfc_target *tg; | |
822 | int i; | |
823 | ||
824 | pr_debug("dev_name %s n_target %d\n", dev_name(&dev->dev), target_idx); | |
825 | ||
d4ccb132 | 826 | device_lock(&dev->dev); |
e1da0efa EL |
827 | |
828 | for (i = 0; i < dev->n_targets; i++) { | |
829 | tg = &dev->targets[i]; | |
830 | if (tg->idx == target_idx) | |
831 | break; | |
832 | } | |
833 | ||
834 | if (i == dev->n_targets) { | |
d4ccb132 | 835 | device_unlock(&dev->dev); |
e1da0efa EL |
836 | return -EINVAL; |
837 | } | |
838 | ||
839 | dev->targets_generation++; | |
840 | dev->n_targets--; | |
90099433 | 841 | dev->active_target = NULL; |
e1da0efa EL |
842 | |
843 | if (dev->n_targets) { | |
844 | memcpy(&dev->targets[i], &dev->targets[i + 1], | |
845 | (dev->n_targets - i) * sizeof(struct nfc_target)); | |
846 | } else { | |
847 | kfree(dev->targets); | |
848 | dev->targets = NULL; | |
849 | } | |
850 | ||
d4ccb132 | 851 | device_unlock(&dev->dev); |
e1da0efa EL |
852 | |
853 | nfc_genl_target_lost(dev, target_idx); | |
854 | ||
855 | return 0; | |
856 | } | |
857 | EXPORT_SYMBOL(nfc_target_lost); | |
858 | ||
9eb334ac | 859 | inline void nfc_driver_failure(struct nfc_dev *dev, int err) |
456411ca | 860 | { |
9eb334ac | 861 | nfc_targets_found(dev, NULL, 0); |
456411ca EL |
862 | } |
863 | EXPORT_SYMBOL(nfc_driver_failure); | |
864 | ||
fed7c25e SO |
865 | int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type) |
866 | { | |
c531c9ec | 867 | struct nfc_se *se; |
2757c372 | 868 | int rc; |
fed7c25e SO |
869 | |
870 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
871 | ||
c531c9ec SO |
872 | se = find_se(dev, se_idx); |
873 | if (se) | |
874 | return -EALREADY; | |
fed7c25e SO |
875 | |
876 | se = kzalloc(sizeof(struct nfc_se), GFP_KERNEL); | |
877 | if (!se) | |
878 | return -ENOMEM; | |
879 | ||
880 | se->idx = se_idx; | |
881 | se->type = type; | |
882 | se->state = NFC_SE_DISABLED; | |
883 | INIT_LIST_HEAD(&se->list); | |
884 | ||
885 | list_add(&se->list, &dev->secure_elements); | |
886 | ||
2757c372 SO |
887 | rc = nfc_genl_se_added(dev, se_idx, type); |
888 | if (rc < 0) { | |
889 | list_del(&se->list); | |
890 | kfree(se); | |
891 | ||
892 | return rc; | |
893 | } | |
894 | ||
fed7c25e SO |
895 | return 0; |
896 | } | |
897 | EXPORT_SYMBOL(nfc_add_se); | |
898 | ||
899 | int nfc_remove_se(struct nfc_dev *dev, u32 se_idx) | |
900 | { | |
901 | struct nfc_se *se, *n; | |
2757c372 | 902 | int rc; |
fed7c25e SO |
903 | |
904 | pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); | |
905 | ||
906 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) | |
907 | if (se->idx == se_idx) { | |
2757c372 SO |
908 | rc = nfc_genl_se_removed(dev, se_idx); |
909 | if (rc < 0) | |
910 | return rc; | |
911 | ||
fed7c25e SO |
912 | list_del(&se->list); |
913 | kfree(se); | |
914 | ||
915 | return 0; | |
916 | } | |
917 | ||
918 | return -EINVAL; | |
919 | } | |
920 | EXPORT_SYMBOL(nfc_remove_se); | |
921 | ||
3e256b8f LRV |
922 | static void nfc_release(struct device *d) |
923 | { | |
924 | struct nfc_dev *dev = to_nfc_dev(d); | |
ee656e9d | 925 | struct nfc_se *se, *n; |
3e256b8f | 926 | |
20c239c1 | 927 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f | 928 | |
4d12b8b1 LRV |
929 | nfc_genl_data_exit(&dev->genl_data); |
930 | kfree(dev->targets); | |
ee656e9d SO |
931 | |
932 | list_for_each_entry_safe(se, n, &dev->secure_elements, list) { | |
933 | nfc_genl_se_removed(dev, se->idx); | |
934 | list_del(&se->list); | |
935 | kfree(se); | |
936 | } | |
937 | ||
3e256b8f LRV |
938 | kfree(dev); |
939 | } | |
940 | ||
c8d56ae7 EL |
941 | static void nfc_check_pres_work(struct work_struct *work) |
942 | { | |
943 | struct nfc_dev *dev = container_of(work, struct nfc_dev, | |
944 | check_pres_work); | |
945 | int rc; | |
946 | ||
947 | device_lock(&dev->dev); | |
948 | ||
90099433 EL |
949 | if (dev->active_target && timer_pending(&dev->check_pres_timer) == 0) { |
950 | rc = dev->ops->check_presence(dev, dev->active_target); | |
632c016a EL |
951 | if (rc == -EOPNOTSUPP) |
952 | goto exit; | |
f0c91038 | 953 | if (rc) { |
d4ccb132 EL |
954 | u32 active_target_idx = dev->active_target->idx; |
955 | device_unlock(&dev->dev); | |
956 | nfc_target_lost(dev, active_target_idx); | |
957 | return; | |
c8d56ae7 | 958 | } |
f0c91038 EL |
959 | |
960 | if (!dev->shutting_down) | |
961 | mod_timer(&dev->check_pres_timer, jiffies + | |
962 | msecs_to_jiffies(NFC_CHECK_PRES_FREQ_MS)); | |
c8d56ae7 EL |
963 | } |
964 | ||
632c016a | 965 | exit: |
c8d56ae7 EL |
966 | device_unlock(&dev->dev); |
967 | } | |
968 | ||
969 | static void nfc_check_pres_timeout(unsigned long data) | |
970 | { | |
971 | struct nfc_dev *dev = (struct nfc_dev *)data; | |
972 | ||
916082b0 | 973 | schedule_work(&dev->check_pres_work); |
c8d56ae7 EL |
974 | } |
975 | ||
3e256b8f LRV |
976 | struct class nfc_class = { |
977 | .name = "nfc", | |
978 | .dev_release = nfc_release, | |
979 | }; | |
980 | EXPORT_SYMBOL(nfc_class); | |
981 | ||
9f3b795a | 982 | static int match_idx(struct device *d, const void *data) |
3e256b8f LRV |
983 | { |
984 | struct nfc_dev *dev = to_nfc_dev(d); | |
9f3b795a | 985 | const unsigned int *idx = data; |
3e256b8f LRV |
986 | |
987 | return dev->idx == *idx; | |
988 | } | |
989 | ||
95c96174 | 990 | struct nfc_dev *nfc_get_device(unsigned int idx) |
3e256b8f LRV |
991 | { |
992 | struct device *d; | |
993 | ||
994 | d = class_find_device(&nfc_class, NULL, &idx, match_idx); | |
995 | if (!d) | |
996 | return NULL; | |
997 | ||
998 | return to_nfc_dev(d); | |
999 | } | |
1000 | ||
1001 | /** | |
1002 | * nfc_allocate_device - allocate a new nfc device | |
1003 | * | |
1004 | * @ops: device operations | |
1005 | * @supported_protocols: NFC protocols supported by the device | |
1006 | */ | |
1007 | struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, | |
0a40acb2 SO |
1008 | u32 supported_protocols, |
1009 | int tx_headroom, int tx_tailroom) | |
3e256b8f | 1010 | { |
3e256b8f LRV |
1011 | struct nfc_dev *dev; |
1012 | ||
1013 | if (!ops->start_poll || !ops->stop_poll || !ops->activate_target || | |
be9ae4ce | 1014 | !ops->deactivate_target || !ops->im_transceive) |
3e256b8f LRV |
1015 | return NULL; |
1016 | ||
1017 | if (!supported_protocols) | |
1018 | return NULL; | |
1019 | ||
1020 | dev = kzalloc(sizeof(struct nfc_dev), GFP_KERNEL); | |
1021 | if (!dev) | |
1022 | return NULL; | |
1023 | ||
3e256b8f LRV |
1024 | dev->ops = ops; |
1025 | dev->supported_protocols = supported_protocols; | |
e8753043 SO |
1026 | dev->tx_headroom = tx_headroom; |
1027 | dev->tx_tailroom = tx_tailroom; | |
fed7c25e | 1028 | INIT_LIST_HEAD(&dev->secure_elements); |
3e256b8f | 1029 | |
4d12b8b1 LRV |
1030 | nfc_genl_data_init(&dev->genl_data); |
1031 | ||
5bcf099c | 1032 | dev->rf_mode = NFC_RF_NONE; |
d4ccb132 | 1033 | |
4d12b8b1 LRV |
1034 | /* first generation must not be 0 */ |
1035 | dev->targets_generation = 1; | |
1036 | ||
c8d56ae7 | 1037 | if (ops->check_presence) { |
c8d56ae7 EL |
1038 | init_timer(&dev->check_pres_timer); |
1039 | dev->check_pres_timer.data = (unsigned long)dev; | |
1040 | dev->check_pres_timer.function = nfc_check_pres_timeout; | |
1041 | ||
1042 | INIT_WORK(&dev->check_pres_work, nfc_check_pres_work); | |
c8d56ae7 EL |
1043 | } |
1044 | ||
3e256b8f LRV |
1045 | return dev; |
1046 | } | |
1047 | EXPORT_SYMBOL(nfc_allocate_device); | |
1048 | ||
1049 | /** | |
1050 | * nfc_register_device - register a nfc device in the nfc subsystem | |
1051 | * | |
1052 | * @dev: The nfc device to register | |
1053 | */ | |
1054 | int nfc_register_device(struct nfc_dev *dev) | |
1055 | { | |
1056 | int rc; | |
1057 | ||
20c239c1 | 1058 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f | 1059 | |
7eda8b8e SO |
1060 | dev->idx = ida_simple_get(&nfc_index_ida, 0, 0, GFP_KERNEL); |
1061 | if (dev->idx < 0) | |
1062 | return dev->idx; | |
1063 | ||
1064 | dev->dev.class = &nfc_class; | |
1065 | dev_set_name(&dev->dev, "nfc%d", dev->idx); | |
1066 | device_initialize(&dev->dev); | |
1067 | ||
3e256b8f LRV |
1068 | mutex_lock(&nfc_devlist_mutex); |
1069 | nfc_devlist_generation++; | |
1070 | rc = device_add(&dev->dev); | |
1071 | mutex_unlock(&nfc_devlist_mutex); | |
1072 | ||
4d12b8b1 LRV |
1073 | if (rc < 0) |
1074 | return rc; | |
1075 | ||
d646960f SO |
1076 | rc = nfc_llcp_register_device(dev); |
1077 | if (rc) | |
1078 | pr_err("Could not register llcp device\n"); | |
1079 | ||
4d12b8b1 LRV |
1080 | rc = nfc_genl_device_added(dev); |
1081 | if (rc) | |
20c239c1 JP |
1082 | pr_debug("The userspace won't be notified that the device %s was added\n", |
1083 | dev_name(&dev->dev)); | |
4d12b8b1 | 1084 | |
be055b2f SO |
1085 | dev->rfkill = rfkill_alloc(dev_name(&dev->dev), &dev->dev, |
1086 | RFKILL_TYPE_NFC, &nfc_rfkill_ops, dev); | |
1087 | if (dev->rfkill) { | |
1088 | if (rfkill_register(dev->rfkill) < 0) { | |
1089 | rfkill_destroy(dev->rfkill); | |
1090 | dev->rfkill = NULL; | |
1091 | } | |
1092 | } | |
1093 | ||
4d12b8b1 | 1094 | return 0; |
3e256b8f LRV |
1095 | } |
1096 | EXPORT_SYMBOL(nfc_register_device); | |
1097 | ||
1098 | /** | |
1099 | * nfc_unregister_device - unregister a nfc device in the nfc subsystem | |
1100 | * | |
1101 | * @dev: The nfc device to unregister | |
1102 | */ | |
1103 | void nfc_unregister_device(struct nfc_dev *dev) | |
1104 | { | |
7eda8b8e | 1105 | int rc, id; |
4d12b8b1 | 1106 | |
20c239c1 | 1107 | pr_debug("dev_name=%s\n", dev_name(&dev->dev)); |
3e256b8f | 1108 | |
7eda8b8e SO |
1109 | id = dev->idx; |
1110 | ||
be055b2f SO |
1111 | if (dev->rfkill) { |
1112 | rfkill_unregister(dev->rfkill); | |
1113 | rfkill_destroy(dev->rfkill); | |
1114 | } | |
1115 | ||
f0c91038 EL |
1116 | if (dev->ops->check_presence) { |
1117 | device_lock(&dev->dev); | |
1118 | dev->shutting_down = true; | |
1119 | device_unlock(&dev->dev); | |
1120 | del_timer_sync(&dev->check_pres_timer); | |
1121 | cancel_work_sync(&dev->check_pres_work); | |
1122 | } | |
3e256b8f | 1123 | |
f0c91038 EL |
1124 | rc = nfc_genl_device_removed(dev); |
1125 | if (rc) | |
1126 | pr_debug("The userspace won't be notified that the device %s " | |
1127 | "was removed\n", dev_name(&dev->dev)); | |
4d12b8b1 | 1128 | |
d646960f SO |
1129 | nfc_llcp_unregister_device(dev); |
1130 | ||
f0c91038 EL |
1131 | mutex_lock(&nfc_devlist_mutex); |
1132 | nfc_devlist_generation++; | |
1133 | device_del(&dev->dev); | |
1134 | mutex_unlock(&nfc_devlist_mutex); | |
4d12b8b1 | 1135 | |
7eda8b8e | 1136 | ida_simple_remove(&nfc_index_ida, id); |
3e256b8f LRV |
1137 | } |
1138 | EXPORT_SYMBOL(nfc_unregister_device); | |
1139 | ||
1140 | static int __init nfc_init(void) | |
1141 | { | |
4d12b8b1 LRV |
1142 | int rc; |
1143 | ||
ed1e0ad8 | 1144 | pr_info("NFC Core ver %s\n", VERSION); |
3e256b8f | 1145 | |
4d12b8b1 LRV |
1146 | rc = class_register(&nfc_class); |
1147 | if (rc) | |
1148 | return rc; | |
1149 | ||
1150 | rc = nfc_genl_init(); | |
1151 | if (rc) | |
1152 | goto err_genl; | |
1153 | ||
1154 | /* the first generation must not be 0 */ | |
1155 | nfc_devlist_generation = 1; | |
1156 | ||
23b7869c LRV |
1157 | rc = rawsock_init(); |
1158 | if (rc) | |
1159 | goto err_rawsock; | |
1160 | ||
d646960f SO |
1161 | rc = nfc_llcp_init(); |
1162 | if (rc) | |
1163 | goto err_llcp_sock; | |
1164 | ||
c7fe3b52 AAJ |
1165 | rc = af_nfc_init(); |
1166 | if (rc) | |
1167 | goto err_af_nfc; | |
1168 | ||
4d12b8b1 LRV |
1169 | return 0; |
1170 | ||
c7fe3b52 | 1171 | err_af_nfc: |
d646960f SO |
1172 | nfc_llcp_exit(); |
1173 | err_llcp_sock: | |
23b7869c LRV |
1174 | rawsock_exit(); |
1175 | err_rawsock: | |
c7fe3b52 | 1176 | nfc_genl_exit(); |
4d12b8b1 LRV |
1177 | err_genl: |
1178 | class_unregister(&nfc_class); | |
1179 | return rc; | |
3e256b8f LRV |
1180 | } |
1181 | ||
1182 | static void __exit nfc_exit(void) | |
1183 | { | |
c7fe3b52 | 1184 | af_nfc_exit(); |
d646960f | 1185 | nfc_llcp_exit(); |
23b7869c | 1186 | rawsock_exit(); |
4d12b8b1 | 1187 | nfc_genl_exit(); |
3e256b8f LRV |
1188 | class_unregister(&nfc_class); |
1189 | } | |
1190 | ||
1191 | subsys_initcall(nfc_init); | |
1192 | module_exit(nfc_exit); | |
1193 | ||
1194 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); | |
1195 | MODULE_DESCRIPTION("NFC Core ver " VERSION); | |
1196 | MODULE_VERSION(VERSION); | |
1197 | MODULE_LICENSE("GPL"); | |
1155bb61 | 1198 | MODULE_ALIAS_NETPROTO(PF_NFC); |
5df16cad | 1199 | MODULE_ALIAS_GENL_FAMILY(NFC_GENL_NAME); |