]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 | 2 | * |
0372a662 MH |
3 | * Bluetooth HCI UART driver |
4 | * | |
5 | * Copyright (C) 2000-2001 Qualcomm Incorporated | |
6 | * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> | |
8 | * | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
1da177e4 | 24 | */ |
1da177e4 | 25 | |
1da177e4 LT |
26 | #include <linux/module.h> |
27 | ||
28 | #include <linux/kernel.h> | |
29 | #include <linux/init.h> | |
1da177e4 LT |
30 | #include <linux/types.h> |
31 | #include <linux/fcntl.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/ptrace.h> | |
34 | #include <linux/poll.h> | |
35 | ||
36 | #include <linux/slab.h> | |
37 | #include <linux/tty.h> | |
38 | #include <linux/errno.h> | |
39 | #include <linux/string.h> | |
40 | #include <linux/signal.h> | |
41 | #include <linux/ioctl.h> | |
42 | #include <linux/skbuff.h> | |
43 | ||
44 | #include <net/bluetooth/bluetooth.h> | |
45 | #include <net/bluetooth/hci_core.h> | |
46 | ||
47 | #include "hci_uart.h" | |
48 | ||
0372a662 MH |
49 | #define VERSION "2.2" |
50 | ||
1da177e4 LT |
51 | static int reset = 0; |
52 | ||
53 | static struct hci_uart_proto *hup[HCI_UART_MAX_PROTO]; | |
54 | ||
55 | int hci_uart_register_proto(struct hci_uart_proto *p) | |
56 | { | |
57 | if (p->id >= HCI_UART_MAX_PROTO) | |
58 | return -EINVAL; | |
59 | ||
60 | if (hup[p->id]) | |
61 | return -EEXIST; | |
62 | ||
63 | hup[p->id] = p; | |
0372a662 | 64 | |
1da177e4 LT |
65 | return 0; |
66 | } | |
67 | ||
68 | int hci_uart_unregister_proto(struct hci_uart_proto *p) | |
69 | { | |
70 | if (p->id >= HCI_UART_MAX_PROTO) | |
71 | return -EINVAL; | |
72 | ||
73 | if (!hup[p->id]) | |
74 | return -EINVAL; | |
75 | ||
76 | hup[p->id] = NULL; | |
0372a662 | 77 | |
1da177e4 LT |
78 | return 0; |
79 | } | |
80 | ||
81 | static struct hci_uart_proto *hci_uart_get_proto(unsigned int id) | |
82 | { | |
83 | if (id >= HCI_UART_MAX_PROTO) | |
84 | return NULL; | |
0372a662 | 85 | |
1da177e4 LT |
86 | return hup[id]; |
87 | } | |
88 | ||
89 | static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type) | |
90 | { | |
91 | struct hci_dev *hdev = hu->hdev; | |
0372a662 | 92 | |
1da177e4 LT |
93 | /* Update HCI stat counters */ |
94 | switch (pkt_type) { | |
95 | case HCI_COMMAND_PKT: | |
96 | hdev->stat.cmd_tx++; | |
97 | break; | |
98 | ||
99 | case HCI_ACLDATA_PKT: | |
100 | hdev->stat.acl_tx++; | |
101 | break; | |
102 | ||
103 | case HCI_SCODATA_PKT: | |
7f8f2729 | 104 | hdev->stat.sco_tx++; |
1da177e4 LT |
105 | break; |
106 | } | |
107 | } | |
108 | ||
109 | static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu) | |
110 | { | |
111 | struct sk_buff *skb = hu->tx_skb; | |
0372a662 | 112 | |
1da177e4 LT |
113 | if (!skb) |
114 | skb = hu->proto->dequeue(hu); | |
115 | else | |
116 | hu->tx_skb = NULL; | |
0372a662 | 117 | |
1da177e4 LT |
118 | return skb; |
119 | } | |
120 | ||
121 | int hci_uart_tx_wakeup(struct hci_uart *hu) | |
122 | { | |
123 | struct tty_struct *tty = hu->tty; | |
124 | struct hci_dev *hdev = hu->hdev; | |
125 | struct sk_buff *skb; | |
0372a662 | 126 | |
1da177e4 LT |
127 | if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) { |
128 | set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); | |
129 | return 0; | |
130 | } | |
131 | ||
132 | BT_DBG(""); | |
133 | ||
134 | restart: | |
135 | clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); | |
136 | ||
137 | while ((skb = hci_uart_dequeue(hu))) { | |
138 | int len; | |
0372a662 | 139 | |
1da177e4 | 140 | set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); |
f34d7a5b | 141 | len = tty->ops->write(tty, skb->data, skb->len); |
1da177e4 LT |
142 | hdev->stat.byte_tx += len; |
143 | ||
144 | skb_pull(skb, len); | |
145 | if (skb->len) { | |
146 | hu->tx_skb = skb; | |
147 | break; | |
148 | } | |
0372a662 | 149 | |
0d48d939 | 150 | hci_uart_tx_complete(hu, bt_cb(skb)->pkt_type); |
1da177e4 | 151 | kfree_skb(skb); |
0372a662 MH |
152 | } |
153 | ||
1da177e4 LT |
154 | if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state)) |
155 | goto restart; | |
156 | ||
157 | clear_bit(HCI_UART_SENDING, &hu->tx_state); | |
158 | return 0; | |
159 | } | |
160 | ||
161 | /* ------- Interface to HCI layer ------ */ | |
162 | /* Initialize device */ | |
163 | static int hci_uart_open(struct hci_dev *hdev) | |
164 | { | |
165 | BT_DBG("%s %p", hdev->name, hdev); | |
166 | ||
167 | /* Nothing to do for UART driver */ | |
168 | ||
169 | set_bit(HCI_RUNNING, &hdev->flags); | |
0372a662 | 170 | |
1da177e4 LT |
171 | return 0; |
172 | } | |
173 | ||
174 | /* Reset device */ | |
175 | static int hci_uart_flush(struct hci_dev *hdev) | |
176 | { | |
177 | struct hci_uart *hu = (struct hci_uart *) hdev->driver_data; | |
178 | struct tty_struct *tty = hu->tty; | |
179 | ||
180 | BT_DBG("hdev %p tty %p", hdev, tty); | |
181 | ||
182 | if (hu->tx_skb) { | |
183 | kfree_skb(hu->tx_skb); hu->tx_skb = NULL; | |
184 | } | |
185 | ||
186 | /* Flush any pending characters in the driver and discipline. */ | |
187 | tty_ldisc_flush(tty); | |
f34d7a5b | 188 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
189 | |
190 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
191 | hu->proto->flush(hu); | |
192 | ||
193 | return 0; | |
194 | } | |
195 | ||
196 | /* Close device */ | |
197 | static int hci_uart_close(struct hci_dev *hdev) | |
198 | { | |
199 | BT_DBG("hdev %p", hdev); | |
200 | ||
201 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
202 | return 0; | |
203 | ||
204 | hci_uart_flush(hdev); | |
3611f4d2 | 205 | hdev->flush = NULL; |
1da177e4 LT |
206 | return 0; |
207 | } | |
208 | ||
209 | /* Send frames from HCI layer */ | |
210 | static int hci_uart_send_frame(struct sk_buff *skb) | |
211 | { | |
212 | struct hci_dev* hdev = (struct hci_dev *) skb->dev; | |
1da177e4 LT |
213 | struct hci_uart *hu; |
214 | ||
215 | if (!hdev) { | |
af901ca1 | 216 | BT_ERR("Frame for unknown device (hdev=NULL)"); |
1da177e4 LT |
217 | return -ENODEV; |
218 | } | |
219 | ||
220 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
221 | return -EBUSY; | |
222 | ||
223 | hu = (struct hci_uart *) hdev->driver_data; | |
1da177e4 | 224 | |
0d48d939 | 225 | BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
226 | |
227 | hu->proto->enqueue(hu, skb); | |
228 | ||
229 | hci_uart_tx_wakeup(hu); | |
0372a662 | 230 | |
1da177e4 LT |
231 | return 0; |
232 | } | |
233 | ||
234 | static void hci_uart_destruct(struct hci_dev *hdev) | |
235 | { | |
0372a662 MH |
236 | if (!hdev) |
237 | return; | |
1da177e4 LT |
238 | |
239 | BT_DBG("%s", hdev->name); | |
7785162c | 240 | kfree(hdev->driver_data); |
1da177e4 LT |
241 | } |
242 | ||
243 | /* ------ LDISC part ------ */ | |
244 | /* hci_uart_tty_open | |
245 | * | |
246 | * Called when line discipline changed to HCI_UART. | |
247 | * | |
248 | * Arguments: | |
249 | * tty pointer to tty info structure | |
250 | * Return Value: | |
251 | * 0 if success, otherwise error code | |
252 | */ | |
253 | static int hci_uart_tty_open(struct tty_struct *tty) | |
254 | { | |
255 | struct hci_uart *hu = (void *) tty->disc_data; | |
256 | ||
257 | BT_DBG("tty %p", tty); | |
258 | ||
c19483cc AC |
259 | /* FIXME: This btw is bogus, nothing requires the old ldisc to clear |
260 | the pointer */ | |
1da177e4 LT |
261 | if (hu) |
262 | return -EEXIST; | |
263 | ||
c19483cc AC |
264 | /* Error if the tty has no write op instead of leaving an exploitable |
265 | hole */ | |
266 | if (tty->ops->write == NULL) | |
267 | return -EOPNOTSUPP; | |
268 | ||
089b1dbb | 269 | if (!(hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL))) { |
7785162c | 270 | BT_ERR("Can't allocate control structure"); |
1da177e4 LT |
271 | return -ENFILE; |
272 | } | |
0372a662 | 273 | |
1da177e4 LT |
274 | tty->disc_data = hu; |
275 | hu->tty = tty; | |
33f0f88f | 276 | tty->receive_room = 65536; |
1da177e4 LT |
277 | |
278 | spin_lock_init(&hu->rx_lock); | |
279 | ||
280 | /* Flush any pending characters in the driver and line discipline. */ | |
0372a662 | 281 | |
1da177e4 LT |
282 | /* FIXME: why is this needed. Note don't use ldisc_ref here as the |
283 | open path is before the ldisc is referencable */ | |
0372a662 | 284 | |
c65c9bc3 AC |
285 | if (tty->ldisc->ops->flush_buffer) |
286 | tty->ldisc->ops->flush_buffer(tty); | |
f34d7a5b | 287 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
288 | |
289 | return 0; | |
290 | } | |
291 | ||
292 | /* hci_uart_tty_close() | |
293 | * | |
294 | * Called when the line discipline is changed to something | |
295 | * else, the tty is closed, or the tty detects a hangup. | |
296 | */ | |
297 | static void hci_uart_tty_close(struct tty_struct *tty) | |
298 | { | |
299 | struct hci_uart *hu = (void *)tty->disc_data; | |
300 | ||
301 | BT_DBG("tty %p", tty); | |
302 | ||
303 | /* Detach from the tty */ | |
304 | tty->disc_data = NULL; | |
305 | ||
306 | if (hu) { | |
307 | struct hci_dev *hdev = hu->hdev; | |
22ad4203 MH |
308 | |
309 | if (hdev) | |
310 | hci_uart_close(hdev); | |
1da177e4 LT |
311 | |
312 | if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
313 | hu->proto->close(hu); | |
d9319560 JN |
314 | if (hdev) { |
315 | hci_unregister_dev(hdev); | |
316 | hci_free_dev(hdev); | |
317 | } | |
1da177e4 LT |
318 | } |
319 | } | |
320 | } | |
321 | ||
322 | /* hci_uart_tty_wakeup() | |
323 | * | |
324 | * Callback for transmit wakeup. Called when low level | |
325 | * device driver can accept more send data. | |
326 | * | |
327 | * Arguments: tty pointer to associated tty instance data | |
328 | * Return Value: None | |
329 | */ | |
330 | static void hci_uart_tty_wakeup(struct tty_struct *tty) | |
331 | { | |
332 | struct hci_uart *hu = (void *)tty->disc_data; | |
333 | ||
334 | BT_DBG(""); | |
335 | ||
336 | if (!hu) | |
337 | return; | |
338 | ||
339 | clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); | |
340 | ||
341 | if (tty != hu->tty) | |
342 | return; | |
343 | ||
344 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
345 | hci_uart_tx_wakeup(hu); | |
346 | } | |
347 | ||
1da177e4 LT |
348 | /* hci_uart_tty_receive() |
349 | * | |
350 | * Called by tty low level driver when receive data is | |
351 | * available. | |
352 | * | |
353 | * Arguments: tty pointer to tty isntance data | |
354 | * data pointer to received data | |
355 | * flags pointer to flags for data | |
356 | * count count of received data in bytes | |
357 | * | |
358 | * Return Value: None | |
359 | */ | |
7785162c | 360 | static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count) |
1da177e4 LT |
361 | { |
362 | struct hci_uart *hu = (void *)tty->disc_data; | |
0372a662 | 363 | |
1da177e4 LT |
364 | if (!hu || tty != hu->tty) |
365 | return; | |
366 | ||
367 | if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
368 | return; | |
0372a662 | 369 | |
1da177e4 LT |
370 | spin_lock(&hu->rx_lock); |
371 | hu->proto->recv(hu, (void *) data, count); | |
372 | hu->hdev->stat.byte_rx += count; | |
373 | spin_unlock(&hu->rx_lock); | |
374 | ||
39c2e60f | 375 | tty_unthrottle(tty); |
1da177e4 LT |
376 | } |
377 | ||
378 | static int hci_uart_register_dev(struct hci_uart *hu) | |
379 | { | |
380 | struct hci_dev *hdev; | |
381 | ||
382 | BT_DBG(""); | |
383 | ||
384 | /* Initialize and register HCI device */ | |
385 | hdev = hci_alloc_dev(); | |
386 | if (!hdev) { | |
387 | BT_ERR("Can't allocate HCI device"); | |
388 | return -ENOMEM; | |
389 | } | |
390 | ||
391 | hu->hdev = hdev; | |
392 | ||
c13854ce | 393 | hdev->bus = HCI_UART; |
1da177e4 LT |
394 | hdev->driver_data = hu; |
395 | ||
396 | hdev->open = hci_uart_open; | |
397 | hdev->close = hci_uart_close; | |
398 | hdev->flush = hci_uart_flush; | |
399 | hdev->send = hci_uart_send_frame; | |
400 | hdev->destruct = hci_uart_destruct; | |
401 | ||
402 | hdev->owner = THIS_MODULE; | |
403 | ||
7a9d4020 MH |
404 | if (!reset) |
405 | set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); | |
1da177e4 | 406 | |
63c7d09c JH |
407 | if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) |
408 | set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); | |
409 | ||
1da177e4 LT |
410 | if (hci_register_dev(hdev) < 0) { |
411 | BT_ERR("Can't register HCI device"); | |
412 | hci_free_dev(hdev); | |
413 | return -ENODEV; | |
414 | } | |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | static int hci_uart_set_proto(struct hci_uart *hu, int id) | |
420 | { | |
421 | struct hci_uart_proto *p; | |
0372a662 MH |
422 | int err; |
423 | ||
1da177e4 LT |
424 | p = hci_uart_get_proto(id); |
425 | if (!p) | |
426 | return -EPROTONOSUPPORT; | |
427 | ||
428 | err = p->open(hu); | |
429 | if (err) | |
430 | return err; | |
431 | ||
432 | hu->proto = p; | |
433 | ||
434 | err = hci_uart_register_dev(hu); | |
435 | if (err) { | |
436 | p->close(hu); | |
437 | return err; | |
438 | } | |
0372a662 | 439 | |
1da177e4 LT |
440 | return 0; |
441 | } | |
442 | ||
443 | /* hci_uart_tty_ioctl() | |
444 | * | |
445 | * Process IOCTL system call for the tty device. | |
446 | * | |
447 | * Arguments: | |
448 | * | |
449 | * tty pointer to tty instance data | |
450 | * file pointer to open file object for device | |
451 | * cmd IOCTL command code | |
452 | * arg argument for IOCTL call (cmd dependent) | |
453 | * | |
454 | * Return Value: Command dependent | |
455 | */ | |
456 | static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, | |
0372a662 | 457 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
458 | { |
459 | struct hci_uart *hu = (void *)tty->disc_data; | |
460 | int err = 0; | |
461 | ||
462 | BT_DBG(""); | |
463 | ||
464 | /* Verify the status of the device */ | |
465 | if (!hu) | |
466 | return -EBADF; | |
467 | ||
468 | switch (cmd) { | |
469 | case HCIUARTSETPROTO: | |
470 | if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
471 | err = hci_uart_set_proto(hu, arg); | |
472 | if (err) { | |
473 | clear_bit(HCI_UART_PROTO_SET, &hu->flags); | |
474 | return err; | |
475 | } | |
0372a662 | 476 | } else |
1da177e4 | 477 | return -EBUSY; |
c33be3c3 | 478 | break; |
1da177e4 LT |
479 | |
480 | case HCIUARTGETPROTO: | |
481 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
482 | return hu->proto->id; | |
483 | return -EUNATCH; | |
0372a662 | 484 | |
d2158744 MH |
485 | case HCIUARTGETDEVICE: |
486 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
487 | return hu->hdev->id; | |
488 | return -EUNATCH; | |
489 | ||
63c7d09c JH |
490 | case HCIUARTSETFLAGS: |
491 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
492 | return -EBUSY; | |
493 | hu->hdev_flags = arg; | |
494 | break; | |
495 | ||
496 | case HCIUARTGETFLAGS: | |
497 | return hu->hdev_flags; | |
498 | ||
1da177e4 | 499 | default: |
47afa7a5 | 500 | err = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
501 | break; |
502 | }; | |
503 | ||
504 | return err; | |
505 | } | |
506 | ||
507 | /* | |
508 | * We don't provide read/write/poll interface for user space. | |
509 | */ | |
0372a662 MH |
510 | static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, |
511 | unsigned char __user *buf, size_t nr) | |
1da177e4 LT |
512 | { |
513 | return 0; | |
514 | } | |
0372a662 MH |
515 | |
516 | static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, | |
517 | const unsigned char *data, size_t count) | |
1da177e4 LT |
518 | { |
519 | return 0; | |
520 | } | |
0372a662 MH |
521 | |
522 | static unsigned int hci_uart_tty_poll(struct tty_struct *tty, | |
523 | struct file *filp, poll_table *wait) | |
1da177e4 LT |
524 | { |
525 | return 0; | |
526 | } | |
527 | ||
1da177e4 LT |
528 | static int __init hci_uart_init(void) |
529 | { | |
a352def2 | 530 | static struct tty_ldisc_ops hci_uart_ldisc; |
1da177e4 LT |
531 | int err; |
532 | ||
533 | BT_INFO("HCI UART driver ver %s", VERSION); | |
534 | ||
535 | /* Register the tty discipline */ | |
536 | ||
537 | memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc)); | |
0372a662 MH |
538 | hci_uart_ldisc.magic = TTY_LDISC_MAGIC; |
539 | hci_uart_ldisc.name = "n_hci"; | |
540 | hci_uart_ldisc.open = hci_uart_tty_open; | |
541 | hci_uart_ldisc.close = hci_uart_tty_close; | |
542 | hci_uart_ldisc.read = hci_uart_tty_read; | |
543 | hci_uart_ldisc.write = hci_uart_tty_write; | |
544 | hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; | |
545 | hci_uart_ldisc.poll = hci_uart_tty_poll; | |
0372a662 MH |
546 | hci_uart_ldisc.receive_buf = hci_uart_tty_receive; |
547 | hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; | |
548 | hci_uart_ldisc.owner = THIS_MODULE; | |
1da177e4 LT |
549 | |
550 | if ((err = tty_register_ldisc(N_HCI, &hci_uart_ldisc))) { | |
551 | BT_ERR("HCI line discipline registration failed. (%d)", err); | |
552 | return err; | |
553 | } | |
554 | ||
555 | #ifdef CONFIG_BT_HCIUART_H4 | |
556 | h4_init(); | |
557 | #endif | |
558 | #ifdef CONFIG_BT_HCIUART_BCSP | |
559 | bcsp_init(); | |
560 | #endif | |
166d2f6a OBC |
561 | #ifdef CONFIG_BT_HCIUART_LL |
562 | ll_init(); | |
563 | #endif | |
b3190df6 SS |
564 | #ifdef CONFIG_BT_HCIUART_ATH3K |
565 | ath_init(); | |
566 | #endif | |
166d2f6a | 567 | |
1da177e4 LT |
568 | return 0; |
569 | } | |
570 | ||
571 | static void __exit hci_uart_exit(void) | |
572 | { | |
573 | int err; | |
574 | ||
575 | #ifdef CONFIG_BT_HCIUART_H4 | |
576 | h4_deinit(); | |
577 | #endif | |
578 | #ifdef CONFIG_BT_HCIUART_BCSP | |
579 | bcsp_deinit(); | |
580 | #endif | |
166d2f6a OBC |
581 | #ifdef CONFIG_BT_HCIUART_LL |
582 | ll_deinit(); | |
583 | #endif | |
b3190df6 SS |
584 | #ifdef CONFIG_BT_HCIUART_ATH3K |
585 | ath_deinit(); | |
586 | #endif | |
1da177e4 LT |
587 | |
588 | /* Release tty registration of line discipline */ | |
64ccd715 | 589 | if ((err = tty_unregister_ldisc(N_HCI))) |
1da177e4 LT |
590 | BT_ERR("Can't unregister HCI line discipline (%d)", err); |
591 | } | |
592 | ||
593 | module_init(hci_uart_init); | |
594 | module_exit(hci_uart_exit); | |
595 | ||
596 | module_param(reset, bool, 0644); | |
597 | MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); | |
598 | ||
63fbd24e | 599 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
600 | MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION); |
601 | MODULE_VERSION(VERSION); | |
602 | MODULE_LICENSE("GPL"); | |
603 | MODULE_ALIAS_LDISC(N_HCI); |