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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 struct hci_uart_proto *hup[HCI_UART_MAX_PROTO]; |
52 | ||
53 | int hci_uart_register_proto(struct hci_uart_proto *p) | |
54 | { | |
55 | if (p->id >= HCI_UART_MAX_PROTO) | |
56 | return -EINVAL; | |
57 | ||
58 | if (hup[p->id]) | |
59 | return -EEXIST; | |
60 | ||
61 | hup[p->id] = p; | |
0372a662 | 62 | |
1da177e4 LT |
63 | return 0; |
64 | } | |
65 | ||
66 | int hci_uart_unregister_proto(struct hci_uart_proto *p) | |
67 | { | |
68 | if (p->id >= HCI_UART_MAX_PROTO) | |
69 | return -EINVAL; | |
70 | ||
71 | if (!hup[p->id]) | |
72 | return -EINVAL; | |
73 | ||
74 | hup[p->id] = NULL; | |
0372a662 | 75 | |
1da177e4 LT |
76 | return 0; |
77 | } | |
78 | ||
79 | static struct hci_uart_proto *hci_uart_get_proto(unsigned int id) | |
80 | { | |
81 | if (id >= HCI_UART_MAX_PROTO) | |
82 | return NULL; | |
0372a662 | 83 | |
1da177e4 LT |
84 | return hup[id]; |
85 | } | |
86 | ||
87 | static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type) | |
88 | { | |
89 | struct hci_dev *hdev = hu->hdev; | |
0372a662 | 90 | |
1da177e4 LT |
91 | /* Update HCI stat counters */ |
92 | switch (pkt_type) { | |
93 | case HCI_COMMAND_PKT: | |
94 | hdev->stat.cmd_tx++; | |
95 | break; | |
96 | ||
97 | case HCI_ACLDATA_PKT: | |
98 | hdev->stat.acl_tx++; | |
99 | break; | |
100 | ||
101 | case HCI_SCODATA_PKT: | |
7f8f2729 | 102 | hdev->stat.sco_tx++; |
1da177e4 LT |
103 | break; |
104 | } | |
105 | } | |
106 | ||
107 | static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu) | |
108 | { | |
109 | struct sk_buff *skb = hu->tx_skb; | |
0372a662 | 110 | |
1da177e4 LT |
111 | if (!skb) |
112 | skb = hu->proto->dequeue(hu); | |
113 | else | |
114 | hu->tx_skb = NULL; | |
0372a662 | 115 | |
1da177e4 LT |
116 | return skb; |
117 | } | |
118 | ||
119 | int hci_uart_tx_wakeup(struct hci_uart *hu) | |
120 | { | |
121 | struct tty_struct *tty = hu->tty; | |
122 | struct hci_dev *hdev = hu->hdev; | |
123 | struct sk_buff *skb; | |
0372a662 | 124 | |
1da177e4 LT |
125 | if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) { |
126 | set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); | |
127 | return 0; | |
128 | } | |
129 | ||
130 | BT_DBG(""); | |
131 | ||
132 | restart: | |
133 | clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); | |
134 | ||
135 | while ((skb = hci_uart_dequeue(hu))) { | |
136 | int len; | |
0372a662 | 137 | |
1da177e4 | 138 | set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); |
f34d7a5b | 139 | len = tty->ops->write(tty, skb->data, skb->len); |
1da177e4 LT |
140 | hdev->stat.byte_tx += len; |
141 | ||
142 | skb_pull(skb, len); | |
143 | if (skb->len) { | |
144 | hu->tx_skb = skb; | |
145 | break; | |
146 | } | |
0372a662 | 147 | |
0d48d939 | 148 | hci_uart_tx_complete(hu, bt_cb(skb)->pkt_type); |
1da177e4 | 149 | kfree_skb(skb); |
0372a662 MH |
150 | } |
151 | ||
1da177e4 LT |
152 | if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state)) |
153 | goto restart; | |
154 | ||
155 | clear_bit(HCI_UART_SENDING, &hu->tx_state); | |
156 | return 0; | |
157 | } | |
158 | ||
159 | /* ------- Interface to HCI layer ------ */ | |
160 | /* Initialize device */ | |
161 | static int hci_uart_open(struct hci_dev *hdev) | |
162 | { | |
163 | BT_DBG("%s %p", hdev->name, hdev); | |
164 | ||
165 | /* Nothing to do for UART driver */ | |
166 | ||
167 | set_bit(HCI_RUNNING, &hdev->flags); | |
0372a662 | 168 | |
1da177e4 LT |
169 | return 0; |
170 | } | |
171 | ||
172 | /* Reset device */ | |
173 | static int hci_uart_flush(struct hci_dev *hdev) | |
174 | { | |
155961e8 | 175 | struct hci_uart *hu = hci_get_drvdata(hdev); |
1da177e4 LT |
176 | struct tty_struct *tty = hu->tty; |
177 | ||
178 | BT_DBG("hdev %p tty %p", hdev, tty); | |
179 | ||
180 | if (hu->tx_skb) { | |
181 | kfree_skb(hu->tx_skb); hu->tx_skb = NULL; | |
182 | } | |
183 | ||
184 | /* Flush any pending characters in the driver and discipline. */ | |
185 | tty_ldisc_flush(tty); | |
f34d7a5b | 186 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
187 | |
188 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
189 | hu->proto->flush(hu); | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | /* Close device */ | |
195 | static int hci_uart_close(struct hci_dev *hdev) | |
196 | { | |
197 | BT_DBG("hdev %p", hdev); | |
198 | ||
199 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
200 | return 0; | |
201 | ||
202 | hci_uart_flush(hdev); | |
3611f4d2 | 203 | hdev->flush = NULL; |
1da177e4 LT |
204 | return 0; |
205 | } | |
206 | ||
207 | /* Send frames from HCI layer */ | |
208 | static int hci_uart_send_frame(struct sk_buff *skb) | |
209 | { | |
210 | struct hci_dev* hdev = (struct hci_dev *) skb->dev; | |
1da177e4 LT |
211 | struct hci_uart *hu; |
212 | ||
213 | if (!hdev) { | |
af901ca1 | 214 | BT_ERR("Frame for unknown device (hdev=NULL)"); |
1da177e4 LT |
215 | return -ENODEV; |
216 | } | |
217 | ||
218 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
219 | return -EBUSY; | |
220 | ||
155961e8 | 221 | hu = hci_get_drvdata(hdev); |
1da177e4 | 222 | |
0d48d939 | 223 | BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
224 | |
225 | hu->proto->enqueue(hu, skb); | |
226 | ||
227 | hci_uart_tx_wakeup(hu); | |
0372a662 | 228 | |
1da177e4 LT |
229 | return 0; |
230 | } | |
231 | ||
1da177e4 LT |
232 | /* ------ LDISC part ------ */ |
233 | /* hci_uart_tty_open | |
234 | * | |
235 | * Called when line discipline changed to HCI_UART. | |
236 | * | |
237 | * Arguments: | |
238 | * tty pointer to tty info structure | |
239 | * Return Value: | |
240 | * 0 if success, otherwise error code | |
241 | */ | |
242 | static int hci_uart_tty_open(struct tty_struct *tty) | |
243 | { | |
244 | struct hci_uart *hu = (void *) tty->disc_data; | |
245 | ||
246 | BT_DBG("tty %p", tty); | |
247 | ||
c19483cc AC |
248 | /* FIXME: This btw is bogus, nothing requires the old ldisc to clear |
249 | the pointer */ | |
1da177e4 LT |
250 | if (hu) |
251 | return -EEXIST; | |
252 | ||
c19483cc AC |
253 | /* Error if the tty has no write op instead of leaving an exploitable |
254 | hole */ | |
255 | if (tty->ops->write == NULL) | |
256 | return -EOPNOTSUPP; | |
257 | ||
089b1dbb | 258 | if (!(hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL))) { |
7785162c | 259 | BT_ERR("Can't allocate control structure"); |
1da177e4 LT |
260 | return -ENFILE; |
261 | } | |
0372a662 | 262 | |
1da177e4 LT |
263 | tty->disc_data = hu; |
264 | hu->tty = tty; | |
33f0f88f | 265 | tty->receive_room = 65536; |
1da177e4 LT |
266 | |
267 | spin_lock_init(&hu->rx_lock); | |
268 | ||
269 | /* Flush any pending characters in the driver and line discipline. */ | |
0372a662 | 270 | |
1da177e4 LT |
271 | /* FIXME: why is this needed. Note don't use ldisc_ref here as the |
272 | open path is before the ldisc is referencable */ | |
0372a662 | 273 | |
c65c9bc3 AC |
274 | if (tty->ldisc->ops->flush_buffer) |
275 | tty->ldisc->ops->flush_buffer(tty); | |
f34d7a5b | 276 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
277 | |
278 | return 0; | |
279 | } | |
280 | ||
281 | /* hci_uart_tty_close() | |
282 | * | |
283 | * Called when the line discipline is changed to something | |
284 | * else, the tty is closed, or the tty detects a hangup. | |
285 | */ | |
286 | static void hci_uart_tty_close(struct tty_struct *tty) | |
287 | { | |
288 | struct hci_uart *hu = (void *)tty->disc_data; | |
289 | ||
290 | BT_DBG("tty %p", tty); | |
291 | ||
292 | /* Detach from the tty */ | |
293 | tty->disc_data = NULL; | |
294 | ||
295 | if (hu) { | |
296 | struct hci_dev *hdev = hu->hdev; | |
22ad4203 MH |
297 | |
298 | if (hdev) | |
299 | hci_uart_close(hdev); | |
1da177e4 LT |
300 | |
301 | if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
d9319560 JN |
302 | if (hdev) { |
303 | hci_unregister_dev(hdev); | |
304 | hci_free_dev(hdev); | |
305 | } | |
33b69bf8 | 306 | hu->proto->close(hu); |
1da177e4 | 307 | } |
797fe796 DH |
308 | |
309 | kfree(hu); | |
1da177e4 LT |
310 | } |
311 | } | |
312 | ||
313 | /* hci_uart_tty_wakeup() | |
314 | * | |
315 | * Callback for transmit wakeup. Called when low level | |
316 | * device driver can accept more send data. | |
317 | * | |
318 | * Arguments: tty pointer to associated tty instance data | |
319 | * Return Value: None | |
320 | */ | |
321 | static void hci_uart_tty_wakeup(struct tty_struct *tty) | |
322 | { | |
323 | struct hci_uart *hu = (void *)tty->disc_data; | |
324 | ||
325 | BT_DBG(""); | |
326 | ||
327 | if (!hu) | |
328 | return; | |
329 | ||
330 | clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); | |
331 | ||
332 | if (tty != hu->tty) | |
333 | return; | |
334 | ||
335 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
336 | hci_uart_tx_wakeup(hu); | |
337 | } | |
338 | ||
1da177e4 LT |
339 | /* hci_uart_tty_receive() |
340 | * | |
341 | * Called by tty low level driver when receive data is | |
342 | * available. | |
343 | * | |
344 | * Arguments: tty pointer to tty isntance data | |
345 | * data pointer to received data | |
346 | * flags pointer to flags for data | |
347 | * count count of received data in bytes | |
348 | * | |
55db4c64 | 349 | * Return Value: None |
1da177e4 | 350 | */ |
55db4c64 | 351 | static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count) |
1da177e4 LT |
352 | { |
353 | struct hci_uart *hu = (void *)tty->disc_data; | |
0372a662 | 354 | |
1da177e4 | 355 | if (!hu || tty != hu->tty) |
55db4c64 | 356 | return; |
1da177e4 LT |
357 | |
358 | if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
55db4c64 | 359 | return; |
0372a662 | 360 | |
1da177e4 | 361 | spin_lock(&hu->rx_lock); |
55db4c64 LT |
362 | hu->proto->recv(hu, (void *) data, count); |
363 | hu->hdev->stat.byte_rx += count; | |
1da177e4 LT |
364 | spin_unlock(&hu->rx_lock); |
365 | ||
39c2e60f | 366 | tty_unthrottle(tty); |
1da177e4 LT |
367 | } |
368 | ||
369 | static int hci_uart_register_dev(struct hci_uart *hu) | |
370 | { | |
371 | struct hci_dev *hdev; | |
372 | ||
373 | BT_DBG(""); | |
374 | ||
375 | /* Initialize and register HCI device */ | |
376 | hdev = hci_alloc_dev(); | |
377 | if (!hdev) { | |
378 | BT_ERR("Can't allocate HCI device"); | |
379 | return -ENOMEM; | |
380 | } | |
381 | ||
382 | hu->hdev = hdev; | |
383 | ||
c13854ce | 384 | hdev->bus = HCI_UART; |
155961e8 | 385 | hci_set_drvdata(hdev, hu); |
1da177e4 LT |
386 | |
387 | hdev->open = hci_uart_open; | |
388 | hdev->close = hci_uart_close; | |
389 | hdev->flush = hci_uart_flush; | |
390 | hdev->send = hci_uart_send_frame; | |
7f4b2b04 | 391 | hdev->parent = hu->tty->dev; |
1da177e4 | 392 | |
63c7d09c JH |
393 | if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) |
394 | set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); | |
395 | ||
a55e1f38 MH |
396 | if (!test_bit(HCI_UART_RESET_ON_INIT, &hu->hdev_flags)) |
397 | set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); | |
398 | ||
8a7a3fd6 MH |
399 | if (test_bit(HCI_UART_CREATE_AMP, &hu->hdev_flags)) |
400 | hdev->dev_type = HCI_AMP; | |
401 | else | |
402 | hdev->dev_type = HCI_BREDR; | |
403 | ||
1da177e4 LT |
404 | if (hci_register_dev(hdev) < 0) { |
405 | BT_ERR("Can't register HCI device"); | |
406 | hci_free_dev(hdev); | |
407 | return -ENODEV; | |
408 | } | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
413 | static int hci_uart_set_proto(struct hci_uart *hu, int id) | |
414 | { | |
415 | struct hci_uart_proto *p; | |
0372a662 MH |
416 | int err; |
417 | ||
1da177e4 LT |
418 | p = hci_uart_get_proto(id); |
419 | if (!p) | |
420 | return -EPROTONOSUPPORT; | |
421 | ||
422 | err = p->open(hu); | |
423 | if (err) | |
424 | return err; | |
425 | ||
426 | hu->proto = p; | |
427 | ||
428 | err = hci_uart_register_dev(hu); | |
429 | if (err) { | |
430 | p->close(hu); | |
431 | return err; | |
432 | } | |
0372a662 | 433 | |
1da177e4 LT |
434 | return 0; |
435 | } | |
436 | ||
437 | /* hci_uart_tty_ioctl() | |
438 | * | |
439 | * Process IOCTL system call for the tty device. | |
440 | * | |
441 | * Arguments: | |
442 | * | |
443 | * tty pointer to tty instance data | |
444 | * file pointer to open file object for device | |
445 | * cmd IOCTL command code | |
446 | * arg argument for IOCTL call (cmd dependent) | |
447 | * | |
448 | * Return Value: Command dependent | |
449 | */ | |
450 | static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, | |
0372a662 | 451 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
452 | { |
453 | struct hci_uart *hu = (void *)tty->disc_data; | |
454 | int err = 0; | |
455 | ||
456 | BT_DBG(""); | |
457 | ||
458 | /* Verify the status of the device */ | |
459 | if (!hu) | |
460 | return -EBADF; | |
461 | ||
462 | switch (cmd) { | |
463 | case HCIUARTSETPROTO: | |
464 | if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
465 | err = hci_uart_set_proto(hu, arg); | |
466 | if (err) { | |
467 | clear_bit(HCI_UART_PROTO_SET, &hu->flags); | |
468 | return err; | |
469 | } | |
0372a662 | 470 | } else |
1da177e4 | 471 | return -EBUSY; |
c33be3c3 | 472 | break; |
1da177e4 LT |
473 | |
474 | case HCIUARTGETPROTO: | |
475 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
476 | return hu->proto->id; | |
477 | return -EUNATCH; | |
0372a662 | 478 | |
d2158744 MH |
479 | case HCIUARTGETDEVICE: |
480 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
481 | return hu->hdev->id; | |
482 | return -EUNATCH; | |
483 | ||
63c7d09c JH |
484 | case HCIUARTSETFLAGS: |
485 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
486 | return -EBUSY; | |
487 | hu->hdev_flags = arg; | |
488 | break; | |
489 | ||
490 | case HCIUARTGETFLAGS: | |
491 | return hu->hdev_flags; | |
492 | ||
1da177e4 | 493 | default: |
47afa7a5 | 494 | err = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
495 | break; |
496 | }; | |
497 | ||
498 | return err; | |
499 | } | |
500 | ||
501 | /* | |
502 | * We don't provide read/write/poll interface for user space. | |
503 | */ | |
0372a662 MH |
504 | static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, |
505 | unsigned char __user *buf, size_t nr) | |
1da177e4 LT |
506 | { |
507 | return 0; | |
508 | } | |
0372a662 MH |
509 | |
510 | static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, | |
511 | const unsigned char *data, size_t count) | |
1da177e4 LT |
512 | { |
513 | return 0; | |
514 | } | |
0372a662 MH |
515 | |
516 | static unsigned int hci_uart_tty_poll(struct tty_struct *tty, | |
517 | struct file *filp, poll_table *wait) | |
1da177e4 LT |
518 | { |
519 | return 0; | |
520 | } | |
521 | ||
1da177e4 LT |
522 | static int __init hci_uart_init(void) |
523 | { | |
a352def2 | 524 | static struct tty_ldisc_ops hci_uart_ldisc; |
1da177e4 LT |
525 | int err; |
526 | ||
527 | BT_INFO("HCI UART driver ver %s", VERSION); | |
528 | ||
529 | /* Register the tty discipline */ | |
530 | ||
531 | memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc)); | |
0372a662 MH |
532 | hci_uart_ldisc.magic = TTY_LDISC_MAGIC; |
533 | hci_uart_ldisc.name = "n_hci"; | |
534 | hci_uart_ldisc.open = hci_uart_tty_open; | |
535 | hci_uart_ldisc.close = hci_uart_tty_close; | |
536 | hci_uart_ldisc.read = hci_uart_tty_read; | |
537 | hci_uart_ldisc.write = hci_uart_tty_write; | |
538 | hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; | |
539 | hci_uart_ldisc.poll = hci_uart_tty_poll; | |
0372a662 MH |
540 | hci_uart_ldisc.receive_buf = hci_uart_tty_receive; |
541 | hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; | |
542 | hci_uart_ldisc.owner = THIS_MODULE; | |
1da177e4 LT |
543 | |
544 | if ((err = tty_register_ldisc(N_HCI, &hci_uart_ldisc))) { | |
545 | BT_ERR("HCI line discipline registration failed. (%d)", err); | |
546 | return err; | |
547 | } | |
548 | ||
549 | #ifdef CONFIG_BT_HCIUART_H4 | |
550 | h4_init(); | |
551 | #endif | |
552 | #ifdef CONFIG_BT_HCIUART_BCSP | |
553 | bcsp_init(); | |
554 | #endif | |
166d2f6a OBC |
555 | #ifdef CONFIG_BT_HCIUART_LL |
556 | ll_init(); | |
557 | #endif | |
b3190df6 SS |
558 | #ifdef CONFIG_BT_HCIUART_ATH3K |
559 | ath_init(); | |
560 | #endif | |
166d2f6a | 561 | |
1da177e4 LT |
562 | return 0; |
563 | } | |
564 | ||
565 | static void __exit hci_uart_exit(void) | |
566 | { | |
567 | int err; | |
568 | ||
569 | #ifdef CONFIG_BT_HCIUART_H4 | |
570 | h4_deinit(); | |
571 | #endif | |
572 | #ifdef CONFIG_BT_HCIUART_BCSP | |
573 | bcsp_deinit(); | |
574 | #endif | |
166d2f6a OBC |
575 | #ifdef CONFIG_BT_HCIUART_LL |
576 | ll_deinit(); | |
577 | #endif | |
b3190df6 SS |
578 | #ifdef CONFIG_BT_HCIUART_ATH3K |
579 | ath_deinit(); | |
580 | #endif | |
1da177e4 LT |
581 | |
582 | /* Release tty registration of line discipline */ | |
64ccd715 | 583 | if ((err = tty_unregister_ldisc(N_HCI))) |
1da177e4 LT |
584 | BT_ERR("Can't unregister HCI line discipline (%d)", err); |
585 | } | |
586 | ||
587 | module_init(hci_uart_init); | |
588 | module_exit(hci_uart_exit); | |
589 | ||
63fbd24e | 590 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
591 | MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION); |
592 | MODULE_VERSION(VERSION); | |
593 | MODULE_LICENSE("GPL"); | |
594 | MODULE_ALIAS_LDISC(N_HCI); |