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Commit | Line | Data |
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7cbe0ff3 TE |
1 | /* |
2 | * NFC hardware simulation driver | |
3 | * Copyright (c) 2013, Intel Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <linux/device.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/module.h> | |
f9ac6273 TE |
19 | #include <linux/ctype.h> |
20 | #include <linux/debugfs.h> | |
7cbe0ff3 TE |
21 | #include <linux/nfc.h> |
22 | #include <net/nfc/nfc.h> | |
204bddcb | 23 | #include <net/nfc/digital.h> |
7cbe0ff3 | 24 | |
204bddcb TE |
25 | #define NFCSIM_ERR(d, fmt, args...) nfc_err(&d->nfc_digital_dev->nfc_dev->dev, \ |
26 | "%s: " fmt, __func__, ## args) | |
7cbe0ff3 | 27 | |
204bddcb TE |
28 | #define NFCSIM_DBG(d, fmt, args...) dev_dbg(&d->nfc_digital_dev->nfc_dev->dev, \ |
29 | "%s: " fmt, __func__, ## args) | |
7cbe0ff3 | 30 | |
204bddcb | 31 | #define NFCSIM_VERSION "0.2" |
7cbe0ff3 | 32 | |
204bddcb TE |
33 | #define NFCSIM_MODE_NONE 0 |
34 | #define NFCSIM_MODE_INITIATOR 1 | |
35 | #define NFCSIM_MODE_TARGET 2 | |
7cbe0ff3 | 36 | |
204bddcb TE |
37 | #define NFCSIM_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \ |
38 | NFC_DIGITAL_DRV_CAPS_TG_CRC) | |
a440f1aa | 39 | |
7cbe0ff3 | 40 | struct nfcsim { |
204bddcb | 41 | struct nfc_digital_dev *nfc_digital_dev; |
7cbe0ff3 | 42 | |
204bddcb TE |
43 | struct work_struct recv_work; |
44 | struct delayed_work send_work; | |
7cbe0ff3 | 45 | |
204bddcb TE |
46 | struct nfcsim_link *link_in; |
47 | struct nfcsim_link *link_out; | |
7cbe0ff3 | 48 | |
204bddcb TE |
49 | bool up; |
50 | u8 mode; | |
51 | u8 rf_tech; | |
7cbe0ff3 | 52 | |
204bddcb | 53 | u16 recv_timeout; |
7cbe0ff3 | 54 | |
204bddcb TE |
55 | nfc_digital_cmd_complete_t cb; |
56 | void *arg; | |
2a0fe4fe TE |
57 | |
58 | u8 dropframe; | |
204bddcb | 59 | }; |
7cbe0ff3 | 60 | |
204bddcb TE |
61 | struct nfcsim_link { |
62 | struct mutex lock; | |
7cbe0ff3 | 63 | |
204bddcb TE |
64 | u8 rf_tech; |
65 | u8 mode; | |
a440f1aa | 66 | |
204bddcb | 67 | u8 shutdown; |
7cbe0ff3 | 68 | |
204bddcb TE |
69 | struct sk_buff *skb; |
70 | wait_queue_head_t recv_wait; | |
71 | u8 cond; | |
7cbe0ff3 TE |
72 | }; |
73 | ||
204bddcb | 74 | static struct nfcsim_link *nfcsim_link_new(void) |
7cbe0ff3 | 75 | { |
204bddcb | 76 | struct nfcsim_link *link; |
7cbe0ff3 | 77 | |
204bddcb TE |
78 | link = kzalloc(sizeof(struct nfcsim_link), GFP_KERNEL); |
79 | if (!link) | |
80 | return NULL; | |
7cbe0ff3 | 81 | |
204bddcb TE |
82 | mutex_init(&link->lock); |
83 | init_waitqueue_head(&link->recv_wait); | |
7cbe0ff3 | 84 | |
204bddcb | 85 | return link; |
7cbe0ff3 TE |
86 | } |
87 | ||
204bddcb | 88 | static void nfcsim_link_free(struct nfcsim_link *link) |
7cbe0ff3 | 89 | { |
204bddcb TE |
90 | dev_kfree_skb(link->skb); |
91 | kfree(link); | |
92 | } | |
7cbe0ff3 | 93 | |
204bddcb TE |
94 | static void nfcsim_link_recv_wake(struct nfcsim_link *link) |
95 | { | |
96 | link->cond = 1; | |
97 | wake_up_interruptible(&link->recv_wait); | |
98 | } | |
7cbe0ff3 | 99 | |
204bddcb TE |
100 | static void nfcsim_link_set_skb(struct nfcsim_link *link, struct sk_buff *skb, |
101 | u8 rf_tech, u8 mode) | |
102 | { | |
103 | mutex_lock(&link->lock); | |
7cbe0ff3 | 104 | |
204bddcb TE |
105 | dev_kfree_skb(link->skb); |
106 | link->skb = skb; | |
107 | link->rf_tech = rf_tech; | |
108 | link->mode = mode; | |
7cbe0ff3 | 109 | |
204bddcb | 110 | mutex_unlock(&link->lock); |
7cbe0ff3 TE |
111 | } |
112 | ||
204bddcb | 113 | static void nfcsim_link_recv_cancel(struct nfcsim_link *link) |
7cbe0ff3 | 114 | { |
204bddcb | 115 | mutex_lock(&link->lock); |
7cbe0ff3 | 116 | |
204bddcb | 117 | link->mode = NFCSIM_MODE_NONE; |
7cbe0ff3 | 118 | |
204bddcb | 119 | mutex_unlock(&link->lock); |
7cbe0ff3 | 120 | |
204bddcb | 121 | nfcsim_link_recv_wake(link); |
7cbe0ff3 TE |
122 | } |
123 | ||
204bddcb | 124 | static void nfcsim_link_shutdown(struct nfcsim_link *link) |
7cbe0ff3 | 125 | { |
204bddcb | 126 | mutex_lock(&link->lock); |
7cbe0ff3 | 127 | |
204bddcb TE |
128 | link->shutdown = 1; |
129 | link->mode = NFCSIM_MODE_NONE; | |
7cbe0ff3 | 130 | |
204bddcb | 131 | mutex_unlock(&link->lock); |
7cbe0ff3 | 132 | |
204bddcb | 133 | nfcsim_link_recv_wake(link); |
7cbe0ff3 TE |
134 | } |
135 | ||
204bddcb TE |
136 | static struct sk_buff *nfcsim_link_recv_skb(struct nfcsim_link *link, |
137 | int timeout, u8 rf_tech, u8 mode) | |
7cbe0ff3 TE |
138 | { |
139 | int rc; | |
204bddcb | 140 | struct sk_buff *skb; |
7cbe0ff3 | 141 | |
204bddcb TE |
142 | rc = wait_event_interruptible_timeout(link->recv_wait, |
143 | link->cond, | |
144 | msecs_to_jiffies(timeout)); | |
7cbe0ff3 | 145 | |
204bddcb | 146 | mutex_lock(&link->lock); |
7cbe0ff3 | 147 | |
204bddcb TE |
148 | skb = link->skb; |
149 | link->skb = NULL; | |
7cbe0ff3 | 150 | |
204bddcb TE |
151 | if (!rc) { |
152 | rc = -ETIMEDOUT; | |
153 | goto done; | |
154 | } | |
7cbe0ff3 | 155 | |
204bddcb TE |
156 | if (!skb || link->rf_tech != rf_tech || link->mode == mode) { |
157 | rc = -EINVAL; | |
158 | goto done; | |
7cbe0ff3 TE |
159 | } |
160 | ||
204bddcb TE |
161 | if (link->shutdown) { |
162 | rc = -ENODEV; | |
163 | goto done; | |
164 | } | |
7cbe0ff3 | 165 | |
204bddcb TE |
166 | done: |
167 | mutex_unlock(&link->lock); | |
7cbe0ff3 | 168 | |
204bddcb TE |
169 | if (rc < 0) { |
170 | dev_kfree_skb(skb); | |
171 | skb = ERR_PTR(rc); | |
7cbe0ff3 TE |
172 | } |
173 | ||
204bddcb | 174 | link->cond = 0; |
7cbe0ff3 | 175 | |
204bddcb | 176 | return skb; |
7cbe0ff3 TE |
177 | } |
178 | ||
204bddcb | 179 | static void nfcsim_send_wq(struct work_struct *work) |
7cbe0ff3 | 180 | { |
204bddcb | 181 | struct nfcsim *dev = container_of(work, struct nfcsim, send_work.work); |
7cbe0ff3 | 182 | |
204bddcb TE |
183 | /* |
184 | * To effectively send data, the device just wake up its link_out which | |
185 | * is the link_in of the peer device. The exchanged skb has already been | |
186 | * stored in the dev->link_out through nfcsim_link_set_skb(). | |
187 | */ | |
188 | nfcsim_link_recv_wake(dev->link_out); | |
7cbe0ff3 TE |
189 | } |
190 | ||
204bddcb | 191 | static void nfcsim_recv_wq(struct work_struct *work) |
7cbe0ff3 | 192 | { |
204bddcb TE |
193 | struct nfcsim *dev = container_of(work, struct nfcsim, recv_work); |
194 | struct sk_buff *skb; | |
7cbe0ff3 | 195 | |
204bddcb TE |
196 | skb = nfcsim_link_recv_skb(dev->link_in, dev->recv_timeout, |
197 | dev->rf_tech, dev->mode); | |
7cbe0ff3 | 198 | |
204bddcb TE |
199 | if (!dev->up) { |
200 | NFCSIM_ERR(dev, "Device is down\n"); | |
7cbe0ff3 | 201 | |
204bddcb TE |
202 | if (!IS_ERR(skb)) |
203 | dev_kfree_skb(skb); | |
7cbe0ff3 | 204 | |
204bddcb | 205 | skb = ERR_PTR(-ENODEV); |
7cbe0ff3 TE |
206 | } |
207 | ||
204bddcb | 208 | dev->cb(dev->nfc_digital_dev, dev->arg, skb); |
7cbe0ff3 TE |
209 | } |
210 | ||
204bddcb TE |
211 | static int nfcsim_send(struct nfc_digital_dev *ddev, struct sk_buff *skb, |
212 | u16 timeout, nfc_digital_cmd_complete_t cb, void *arg) | |
7cbe0ff3 | 213 | { |
204bddcb TE |
214 | struct nfcsim *dev = nfc_digital_get_drvdata(ddev); |
215 | u8 delay; | |
7cbe0ff3 | 216 | |
204bddcb TE |
217 | if (!dev->up) { |
218 | NFCSIM_ERR(dev, "Device is down\n"); | |
219 | return -ENODEV; | |
220 | } | |
221 | ||
222 | dev->recv_timeout = timeout; | |
223 | dev->cb = cb; | |
224 | dev->arg = arg; | |
7cbe0ff3 | 225 | |
204bddcb | 226 | schedule_work(&dev->recv_work); |
7cbe0ff3 | 227 | |
2a0fe4fe TE |
228 | if (dev->dropframe) { |
229 | NFCSIM_DBG(dev, "dropping frame (out of %d)\n", dev->dropframe); | |
230 | dev_kfree_skb(skb); | |
231 | dev->dropframe--; | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
204bddcb TE |
236 | if (skb) { |
237 | nfcsim_link_set_skb(dev->link_out, skb, dev->rf_tech, | |
238 | dev->mode); | |
7cbe0ff3 | 239 | |
204bddcb TE |
240 | /* Add random delay (between 3 and 10 ms) before sending data */ |
241 | get_random_bytes(&delay, 1); | |
242 | delay = 3 + (delay & 0x07); | |
7cbe0ff3 | 243 | |
204bddcb TE |
244 | schedule_delayed_work(&dev->send_work, msecs_to_jiffies(delay)); |
245 | } | |
246 | ||
247 | return 0; | |
7cbe0ff3 TE |
248 | } |
249 | ||
204bddcb | 250 | static void nfcsim_abort_cmd(struct nfc_digital_dev *ddev) |
7cbe0ff3 | 251 | { |
204bddcb | 252 | struct nfcsim *dev = nfc_digital_get_drvdata(ddev); |
7cbe0ff3 | 253 | |
204bddcb | 254 | nfcsim_link_recv_cancel(dev->link_in); |
7cbe0ff3 TE |
255 | } |
256 | ||
204bddcb | 257 | static int nfcsim_switch_rf(struct nfc_digital_dev *ddev, bool on) |
7cbe0ff3 | 258 | { |
204bddcb | 259 | struct nfcsim *dev = nfc_digital_get_drvdata(ddev); |
7cbe0ff3 | 260 | |
204bddcb TE |
261 | dev->up = on; |
262 | ||
263 | return 0; | |
7cbe0ff3 TE |
264 | } |
265 | ||
204bddcb TE |
266 | static int nfcsim_in_configure_hw(struct nfc_digital_dev *ddev, |
267 | int type, int param) | |
7cbe0ff3 | 268 | { |
204bddcb | 269 | struct nfcsim *dev = nfc_digital_get_drvdata(ddev); |
7cbe0ff3 | 270 | |
204bddcb TE |
271 | switch (type) { |
272 | case NFC_DIGITAL_CONFIG_RF_TECH: | |
273 | dev->up = true; | |
274 | dev->mode = NFCSIM_MODE_INITIATOR; | |
275 | dev->rf_tech = param; | |
276 | break; | |
7cbe0ff3 | 277 | |
204bddcb TE |
278 | case NFC_DIGITAL_CONFIG_FRAMING: |
279 | break; | |
7cbe0ff3 | 280 | |
204bddcb TE |
281 | default: |
282 | NFCSIM_ERR(dev, "Invalid configuration type: %d\n", type); | |
283 | return -EINVAL; | |
7cbe0ff3 TE |
284 | } |
285 | ||
204bddcb | 286 | return 0; |
7cbe0ff3 TE |
287 | } |
288 | ||
204bddcb TE |
289 | static int nfcsim_in_send_cmd(struct nfc_digital_dev *ddev, |
290 | struct sk_buff *skb, u16 timeout, | |
291 | nfc_digital_cmd_complete_t cb, void *arg) | |
7cbe0ff3 | 292 | { |
204bddcb TE |
293 | return nfcsim_send(ddev, skb, timeout, cb, arg); |
294 | } | |
7cbe0ff3 | 295 | |
204bddcb TE |
296 | static int nfcsim_tg_configure_hw(struct nfc_digital_dev *ddev, |
297 | int type, int param) | |
298 | { | |
299 | struct nfcsim *dev = nfc_digital_get_drvdata(ddev); | |
7cbe0ff3 | 300 | |
204bddcb TE |
301 | switch (type) { |
302 | case NFC_DIGITAL_CONFIG_RF_TECH: | |
303 | dev->up = true; | |
304 | dev->mode = NFCSIM_MODE_TARGET; | |
305 | dev->rf_tech = param; | |
306 | break; | |
7cbe0ff3 | 307 | |
204bddcb TE |
308 | case NFC_DIGITAL_CONFIG_FRAMING: |
309 | break; | |
7cbe0ff3 | 310 | |
204bddcb TE |
311 | default: |
312 | NFCSIM_ERR(dev, "Invalid configuration type: %d\n", type); | |
313 | return -EINVAL; | |
7cbe0ff3 TE |
314 | } |
315 | ||
204bddcb | 316 | return 0; |
7cbe0ff3 TE |
317 | } |
318 | ||
204bddcb TE |
319 | static int nfcsim_tg_send_cmd(struct nfc_digital_dev *ddev, |
320 | struct sk_buff *skb, u16 timeout, | |
321 | nfc_digital_cmd_complete_t cb, void *arg) | |
7cbe0ff3 | 322 | { |
204bddcb | 323 | return nfcsim_send(ddev, skb, timeout, cb, arg); |
7cbe0ff3 TE |
324 | } |
325 | ||
204bddcb TE |
326 | static int nfcsim_tg_listen(struct nfc_digital_dev *ddev, u16 timeout, |
327 | nfc_digital_cmd_complete_t cb, void *arg) | |
7cbe0ff3 | 328 | { |
204bddcb | 329 | return nfcsim_send(ddev, NULL, timeout, cb, arg); |
7cbe0ff3 TE |
330 | } |
331 | ||
204bddcb TE |
332 | static struct nfc_digital_ops nfcsim_digital_ops = { |
333 | .in_configure_hw = nfcsim_in_configure_hw, | |
334 | .in_send_cmd = nfcsim_in_send_cmd, | |
7cbe0ff3 | 335 | |
204bddcb TE |
336 | .tg_listen = nfcsim_tg_listen, |
337 | .tg_configure_hw = nfcsim_tg_configure_hw, | |
338 | .tg_send_cmd = nfcsim_tg_send_cmd, | |
7cbe0ff3 | 339 | |
204bddcb TE |
340 | .abort_cmd = nfcsim_abort_cmd, |
341 | .switch_rf = nfcsim_switch_rf, | |
342 | }; | |
7cbe0ff3 | 343 | |
f9ac6273 TE |
344 | static struct dentry *nfcsim_debugfs_root; |
345 | ||
346 | static void nfcsim_debugfs_init(void) | |
347 | { | |
348 | nfcsim_debugfs_root = debugfs_create_dir("nfcsim", NULL); | |
349 | ||
350 | if (!nfcsim_debugfs_root) | |
351 | pr_err("Could not create debugfs entry\n"); | |
352 | ||
353 | } | |
354 | ||
355 | static void nfcsim_debugfs_remove(void) | |
356 | { | |
357 | debugfs_remove_recursive(nfcsim_debugfs_root); | |
358 | } | |
359 | ||
360 | static void nfcsim_debugfs_init_dev(struct nfcsim *dev) | |
361 | { | |
362 | struct dentry *dev_dir; | |
363 | char devname[5]; /* nfcX\0 */ | |
364 | u32 idx; | |
365 | int n; | |
366 | ||
367 | if (!nfcsim_debugfs_root) { | |
368 | NFCSIM_ERR(dev, "nfcsim debugfs not initialized\n"); | |
369 | return; | |
370 | } | |
371 | ||
372 | idx = dev->nfc_digital_dev->nfc_dev->idx; | |
373 | n = snprintf(devname, sizeof(devname), "nfc%d", idx); | |
374 | if (n >= sizeof(devname)) { | |
375 | NFCSIM_ERR(dev, "Could not compute dev name for dev %d\n", idx); | |
376 | return; | |
377 | } | |
378 | ||
379 | dev_dir = debugfs_create_dir(devname, nfcsim_debugfs_root); | |
380 | if (!dev_dir) { | |
381 | NFCSIM_ERR(dev, "Could not create debugfs entries for nfc%d\n", | |
382 | idx); | |
383 | return; | |
384 | } | |
2a0fe4fe TE |
385 | |
386 | debugfs_create_u8("dropframe", 0664, dev_dir, &dev->dropframe); | |
f9ac6273 TE |
387 | } |
388 | ||
204bddcb TE |
389 | static struct nfcsim *nfcsim_device_new(struct nfcsim_link *link_in, |
390 | struct nfcsim_link *link_out) | |
7cbe0ff3 | 391 | { |
204bddcb TE |
392 | struct nfcsim *dev; |
393 | int rc; | |
7cbe0ff3 | 394 | |
204bddcb TE |
395 | dev = kzalloc(sizeof(struct nfcsim), GFP_KERNEL); |
396 | if (!dev) | |
397 | return ERR_PTR(-ENOMEM); | |
7cbe0ff3 | 398 | |
204bddcb TE |
399 | INIT_DELAYED_WORK(&dev->send_work, nfcsim_send_wq); |
400 | INIT_WORK(&dev->recv_work, nfcsim_recv_wq); | |
7cbe0ff3 | 401 | |
204bddcb TE |
402 | dev->nfc_digital_dev = |
403 | nfc_digital_allocate_device(&nfcsim_digital_ops, | |
404 | NFC_PROTO_NFC_DEP_MASK, | |
405 | NFCSIM_CAPABILITIES, | |
406 | 0, 0); | |
407 | if (!dev->nfc_digital_dev) { | |
408 | kfree(dev); | |
409 | return ERR_PTR(-ENOMEM); | |
7cbe0ff3 TE |
410 | } |
411 | ||
204bddcb | 412 | nfc_digital_set_drvdata(dev->nfc_digital_dev, dev); |
7cbe0ff3 | 413 | |
204bddcb TE |
414 | dev->link_in = link_in; |
415 | dev->link_out = link_out; | |
7cbe0ff3 | 416 | |
204bddcb TE |
417 | rc = nfc_digital_register_device(dev->nfc_digital_dev); |
418 | if (rc) { | |
419 | pr_err("Could not register digital device (%d)\n", rc); | |
420 | nfc_digital_free_device(dev->nfc_digital_dev); | |
421 | kfree(dev); | |
7cbe0ff3 | 422 | |
204bddcb | 423 | return ERR_PTR(rc); |
7cbe0ff3 TE |
424 | } |
425 | ||
f9ac6273 TE |
426 | nfcsim_debugfs_init_dev(dev); |
427 | ||
204bddcb | 428 | return dev; |
7cbe0ff3 TE |
429 | } |
430 | ||
204bddcb | 431 | static void nfcsim_device_free(struct nfcsim *dev) |
7cbe0ff3 | 432 | { |
204bddcb | 433 | nfc_digital_unregister_device(dev->nfc_digital_dev); |
7cbe0ff3 | 434 | |
204bddcb | 435 | dev->up = false; |
7cbe0ff3 | 436 | |
204bddcb | 437 | nfcsim_link_shutdown(dev->link_in); |
7cbe0ff3 | 438 | |
204bddcb TE |
439 | cancel_delayed_work_sync(&dev->send_work); |
440 | cancel_work_sync(&dev->recv_work); | |
7cbe0ff3 | 441 | |
204bddcb | 442 | nfc_digital_free_device(dev->nfc_digital_dev); |
7cbe0ff3 | 443 | |
7cbe0ff3 | 444 | kfree(dev); |
7cbe0ff3 TE |
445 | } |
446 | ||
204bddcb TE |
447 | static struct nfcsim *dev0; |
448 | static struct nfcsim *dev1; | |
7cbe0ff3 | 449 | |
40dac370 | 450 | static int __init nfcsim_init(void) |
7cbe0ff3 | 451 | { |
204bddcb | 452 | struct nfcsim_link *link0, *link1; |
7cbe0ff3 TE |
453 | int rc; |
454 | ||
204bddcb TE |
455 | link0 = nfcsim_link_new(); |
456 | link1 = nfcsim_link_new(); | |
457 | if (!link0 || !link1) { | |
7cbe0ff3 | 458 | rc = -ENOMEM; |
204bddcb | 459 | goto exit_err; |
7cbe0ff3 TE |
460 | } |
461 | ||
f9ac6273 TE |
462 | nfcsim_debugfs_init(); |
463 | ||
204bddcb | 464 | dev0 = nfcsim_device_new(link0, link1); |
7cbe0ff3 TE |
465 | if (IS_ERR(dev0)) { |
466 | rc = PTR_ERR(dev0); | |
204bddcb | 467 | goto exit_err; |
7cbe0ff3 TE |
468 | } |
469 | ||
204bddcb | 470 | dev1 = nfcsim_device_new(link1, link0); |
7cbe0ff3 | 471 | if (IS_ERR(dev1)) { |
204bddcb | 472 | nfcsim_device_free(dev0); |
7cbe0ff3 TE |
473 | |
474 | rc = PTR_ERR(dev1); | |
204bddcb | 475 | goto exit_err; |
7cbe0ff3 TE |
476 | } |
477 | ||
204bddcb | 478 | pr_info("nfcsim " NFCSIM_VERSION " initialized\n"); |
7cbe0ff3 | 479 | |
204bddcb TE |
480 | return 0; |
481 | ||
482 | exit_err: | |
483 | pr_err("Failed to initialize nfcsim driver (%d)\n", rc); | |
7cbe0ff3 | 484 | |
204bddcb TE |
485 | nfcsim_link_free(link0); |
486 | nfcsim_link_free(link1); | |
7cbe0ff3 TE |
487 | |
488 | return rc; | |
489 | } | |
490 | ||
40dac370 | 491 | static void __exit nfcsim_exit(void) |
7cbe0ff3 | 492 | { |
204bddcb TE |
493 | struct nfcsim_link *link0, *link1; |
494 | ||
495 | link0 = dev0->link_in; | |
496 | link1 = dev0->link_out; | |
7cbe0ff3 | 497 | |
204bddcb TE |
498 | nfcsim_device_free(dev0); |
499 | nfcsim_device_free(dev1); | |
7cbe0ff3 | 500 | |
204bddcb TE |
501 | nfcsim_link_free(link0); |
502 | nfcsim_link_free(link1); | |
f9ac6273 TE |
503 | |
504 | nfcsim_debugfs_remove(); | |
7cbe0ff3 TE |
505 | } |
506 | ||
507 | module_init(nfcsim_init); | |
508 | module_exit(nfcsim_exit); | |
509 | ||
510 | MODULE_DESCRIPTION("NFCSim driver ver " NFCSIM_VERSION); | |
511 | MODULE_VERSION(NFCSIM_VERSION); | |
512 | MODULE_LICENSE("GPL"); |