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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 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 | ||
1da177e4 LT |
234 | /* ------ LDISC part ------ */ |
235 | /* hci_uart_tty_open | |
236 | * | |
237 | * Called when line discipline changed to HCI_UART. | |
238 | * | |
239 | * Arguments: | |
240 | * tty pointer to tty info structure | |
241 | * Return Value: | |
242 | * 0 if success, otherwise error code | |
243 | */ | |
244 | static int hci_uart_tty_open(struct tty_struct *tty) | |
245 | { | |
246 | struct hci_uart *hu = (void *) tty->disc_data; | |
247 | ||
248 | BT_DBG("tty %p", tty); | |
249 | ||
c19483cc AC |
250 | /* FIXME: This btw is bogus, nothing requires the old ldisc to clear |
251 | the pointer */ | |
1da177e4 LT |
252 | if (hu) |
253 | return -EEXIST; | |
254 | ||
c19483cc AC |
255 | /* Error if the tty has no write op instead of leaving an exploitable |
256 | hole */ | |
257 | if (tty->ops->write == NULL) | |
258 | return -EOPNOTSUPP; | |
259 | ||
089b1dbb | 260 | if (!(hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL))) { |
7785162c | 261 | BT_ERR("Can't allocate control structure"); |
1da177e4 LT |
262 | return -ENFILE; |
263 | } | |
0372a662 | 264 | |
1da177e4 LT |
265 | tty->disc_data = hu; |
266 | hu->tty = tty; | |
33f0f88f | 267 | tty->receive_room = 65536; |
1da177e4 LT |
268 | |
269 | spin_lock_init(&hu->rx_lock); | |
270 | ||
271 | /* Flush any pending characters in the driver and line discipline. */ | |
0372a662 | 272 | |
1da177e4 LT |
273 | /* FIXME: why is this needed. Note don't use ldisc_ref here as the |
274 | open path is before the ldisc is referencable */ | |
0372a662 | 275 | |
c65c9bc3 AC |
276 | if (tty->ldisc->ops->flush_buffer) |
277 | tty->ldisc->ops->flush_buffer(tty); | |
f34d7a5b | 278 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
279 | |
280 | return 0; | |
281 | } | |
282 | ||
283 | /* hci_uart_tty_close() | |
284 | * | |
285 | * Called when the line discipline is changed to something | |
286 | * else, the tty is closed, or the tty detects a hangup. | |
287 | */ | |
288 | static void hci_uart_tty_close(struct tty_struct *tty) | |
289 | { | |
290 | struct hci_uart *hu = (void *)tty->disc_data; | |
291 | ||
292 | BT_DBG("tty %p", tty); | |
293 | ||
294 | /* Detach from the tty */ | |
295 | tty->disc_data = NULL; | |
296 | ||
297 | if (hu) { | |
298 | struct hci_dev *hdev = hu->hdev; | |
22ad4203 MH |
299 | |
300 | if (hdev) | |
301 | hci_uart_close(hdev); | |
1da177e4 LT |
302 | |
303 | if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
304 | hu->proto->close(hu); | |
d9319560 JN |
305 | if (hdev) { |
306 | hci_unregister_dev(hdev); | |
307 | hci_free_dev(hdev); | |
308 | } | |
1da177e4 | 309 | } |
797fe796 DH |
310 | |
311 | kfree(hu); | |
1da177e4 LT |
312 | } |
313 | } | |
314 | ||
315 | /* hci_uart_tty_wakeup() | |
316 | * | |
317 | * Callback for transmit wakeup. Called when low level | |
318 | * device driver can accept more send data. | |
319 | * | |
320 | * Arguments: tty pointer to associated tty instance data | |
321 | * Return Value: None | |
322 | */ | |
323 | static void hci_uart_tty_wakeup(struct tty_struct *tty) | |
324 | { | |
325 | struct hci_uart *hu = (void *)tty->disc_data; | |
326 | ||
327 | BT_DBG(""); | |
328 | ||
329 | if (!hu) | |
330 | return; | |
331 | ||
332 | clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); | |
333 | ||
334 | if (tty != hu->tty) | |
335 | return; | |
336 | ||
337 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
338 | hci_uart_tx_wakeup(hu); | |
339 | } | |
340 | ||
1da177e4 LT |
341 | /* hci_uart_tty_receive() |
342 | * | |
343 | * Called by tty low level driver when receive data is | |
344 | * available. | |
345 | * | |
346 | * Arguments: tty pointer to tty isntance data | |
347 | * data pointer to received data | |
348 | * flags pointer to flags for data | |
349 | * count count of received data in bytes | |
350 | * | |
55db4c64 | 351 | * Return Value: None |
1da177e4 | 352 | */ |
55db4c64 | 353 | static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count) |
1da177e4 LT |
354 | { |
355 | struct hci_uart *hu = (void *)tty->disc_data; | |
0372a662 | 356 | |
1da177e4 | 357 | if (!hu || tty != hu->tty) |
55db4c64 | 358 | return; |
1da177e4 LT |
359 | |
360 | if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
55db4c64 | 361 | return; |
0372a662 | 362 | |
1da177e4 | 363 | spin_lock(&hu->rx_lock); |
55db4c64 LT |
364 | hu->proto->recv(hu, (void *) data, count); |
365 | hu->hdev->stat.byte_rx += count; | |
1da177e4 LT |
366 | spin_unlock(&hu->rx_lock); |
367 | ||
39c2e60f | 368 | tty_unthrottle(tty); |
1da177e4 LT |
369 | } |
370 | ||
371 | static int hci_uart_register_dev(struct hci_uart *hu) | |
372 | { | |
373 | struct hci_dev *hdev; | |
374 | ||
375 | BT_DBG(""); | |
376 | ||
377 | /* Initialize and register HCI device */ | |
378 | hdev = hci_alloc_dev(); | |
379 | if (!hdev) { | |
380 | BT_ERR("Can't allocate HCI device"); | |
381 | return -ENOMEM; | |
382 | } | |
383 | ||
384 | hu->hdev = hdev; | |
385 | ||
c13854ce | 386 | hdev->bus = HCI_UART; |
1da177e4 LT |
387 | hdev->driver_data = hu; |
388 | ||
389 | hdev->open = hci_uart_open; | |
390 | hdev->close = hci_uart_close; | |
391 | hdev->flush = hci_uart_flush; | |
392 | hdev->send = hci_uart_send_frame; | |
7f4b2b04 | 393 | hdev->parent = hu->tty->dev; |
1da177e4 | 394 | |
7a9d4020 MH |
395 | if (!reset) |
396 | set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); | |
1da177e4 | 397 | |
63c7d09c JH |
398 | if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) |
399 | set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); | |
400 | ||
1da177e4 LT |
401 | if (hci_register_dev(hdev) < 0) { |
402 | BT_ERR("Can't register HCI device"); | |
403 | hci_free_dev(hdev); | |
404 | return -ENODEV; | |
405 | } | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | static int hci_uart_set_proto(struct hci_uart *hu, int id) | |
411 | { | |
412 | struct hci_uart_proto *p; | |
0372a662 MH |
413 | int err; |
414 | ||
1da177e4 LT |
415 | p = hci_uart_get_proto(id); |
416 | if (!p) | |
417 | return -EPROTONOSUPPORT; | |
418 | ||
419 | err = p->open(hu); | |
420 | if (err) | |
421 | return err; | |
422 | ||
423 | hu->proto = p; | |
424 | ||
425 | err = hci_uart_register_dev(hu); | |
426 | if (err) { | |
427 | p->close(hu); | |
428 | return err; | |
429 | } | |
0372a662 | 430 | |
1da177e4 LT |
431 | return 0; |
432 | } | |
433 | ||
434 | /* hci_uart_tty_ioctl() | |
435 | * | |
436 | * Process IOCTL system call for the tty device. | |
437 | * | |
438 | * Arguments: | |
439 | * | |
440 | * tty pointer to tty instance data | |
441 | * file pointer to open file object for device | |
442 | * cmd IOCTL command code | |
443 | * arg argument for IOCTL call (cmd dependent) | |
444 | * | |
445 | * Return Value: Command dependent | |
446 | */ | |
447 | static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, | |
0372a662 | 448 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
449 | { |
450 | struct hci_uart *hu = (void *)tty->disc_data; | |
451 | int err = 0; | |
452 | ||
453 | BT_DBG(""); | |
454 | ||
455 | /* Verify the status of the device */ | |
456 | if (!hu) | |
457 | return -EBADF; | |
458 | ||
459 | switch (cmd) { | |
460 | case HCIUARTSETPROTO: | |
461 | if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
462 | err = hci_uart_set_proto(hu, arg); | |
463 | if (err) { | |
464 | clear_bit(HCI_UART_PROTO_SET, &hu->flags); | |
465 | return err; | |
466 | } | |
0372a662 | 467 | } else |
1da177e4 | 468 | return -EBUSY; |
c33be3c3 | 469 | break; |
1da177e4 LT |
470 | |
471 | case HCIUARTGETPROTO: | |
472 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
473 | return hu->proto->id; | |
474 | return -EUNATCH; | |
0372a662 | 475 | |
d2158744 MH |
476 | case HCIUARTGETDEVICE: |
477 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
478 | return hu->hdev->id; | |
479 | return -EUNATCH; | |
480 | ||
63c7d09c JH |
481 | case HCIUARTSETFLAGS: |
482 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
483 | return -EBUSY; | |
484 | hu->hdev_flags = arg; | |
485 | break; | |
486 | ||
487 | case HCIUARTGETFLAGS: | |
488 | return hu->hdev_flags; | |
489 | ||
1da177e4 | 490 | default: |
47afa7a5 | 491 | err = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 LT |
492 | break; |
493 | }; | |
494 | ||
495 | return err; | |
496 | } | |
497 | ||
498 | /* | |
499 | * We don't provide read/write/poll interface for user space. | |
500 | */ | |
0372a662 MH |
501 | static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, |
502 | unsigned char __user *buf, size_t nr) | |
1da177e4 LT |
503 | { |
504 | return 0; | |
505 | } | |
0372a662 MH |
506 | |
507 | static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, | |
508 | const unsigned char *data, size_t count) | |
1da177e4 LT |
509 | { |
510 | return 0; | |
511 | } | |
0372a662 MH |
512 | |
513 | static unsigned int hci_uart_tty_poll(struct tty_struct *tty, | |
514 | struct file *filp, poll_table *wait) | |
1da177e4 LT |
515 | { |
516 | return 0; | |
517 | } | |
518 | ||
1da177e4 LT |
519 | static int __init hci_uart_init(void) |
520 | { | |
a352def2 | 521 | static struct tty_ldisc_ops hci_uart_ldisc; |
1da177e4 LT |
522 | int err; |
523 | ||
524 | BT_INFO("HCI UART driver ver %s", VERSION); | |
525 | ||
526 | /* Register the tty discipline */ | |
527 | ||
528 | memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc)); | |
0372a662 MH |
529 | hci_uart_ldisc.magic = TTY_LDISC_MAGIC; |
530 | hci_uart_ldisc.name = "n_hci"; | |
531 | hci_uart_ldisc.open = hci_uart_tty_open; | |
532 | hci_uart_ldisc.close = hci_uart_tty_close; | |
533 | hci_uart_ldisc.read = hci_uart_tty_read; | |
534 | hci_uart_ldisc.write = hci_uart_tty_write; | |
535 | hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; | |
536 | hci_uart_ldisc.poll = hci_uart_tty_poll; | |
0372a662 MH |
537 | hci_uart_ldisc.receive_buf = hci_uart_tty_receive; |
538 | hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; | |
539 | hci_uart_ldisc.owner = THIS_MODULE; | |
1da177e4 LT |
540 | |
541 | if ((err = tty_register_ldisc(N_HCI, &hci_uart_ldisc))) { | |
542 | BT_ERR("HCI line discipline registration failed. (%d)", err); | |
543 | return err; | |
544 | } | |
545 | ||
546 | #ifdef CONFIG_BT_HCIUART_H4 | |
547 | h4_init(); | |
548 | #endif | |
549 | #ifdef CONFIG_BT_HCIUART_BCSP | |
550 | bcsp_init(); | |
551 | #endif | |
166d2f6a OBC |
552 | #ifdef CONFIG_BT_HCIUART_LL |
553 | ll_init(); | |
554 | #endif | |
b3190df6 SS |
555 | #ifdef CONFIG_BT_HCIUART_ATH3K |
556 | ath_init(); | |
557 | #endif | |
166d2f6a | 558 | |
1da177e4 LT |
559 | return 0; |
560 | } | |
561 | ||
562 | static void __exit hci_uart_exit(void) | |
563 | { | |
564 | int err; | |
565 | ||
566 | #ifdef CONFIG_BT_HCIUART_H4 | |
567 | h4_deinit(); | |
568 | #endif | |
569 | #ifdef CONFIG_BT_HCIUART_BCSP | |
570 | bcsp_deinit(); | |
571 | #endif | |
166d2f6a OBC |
572 | #ifdef CONFIG_BT_HCIUART_LL |
573 | ll_deinit(); | |
574 | #endif | |
b3190df6 SS |
575 | #ifdef CONFIG_BT_HCIUART_ATH3K |
576 | ath_deinit(); | |
577 | #endif | |
1da177e4 LT |
578 | |
579 | /* Release tty registration of line discipline */ | |
64ccd715 | 580 | if ((err = tty_unregister_ldisc(N_HCI))) |
1da177e4 LT |
581 | BT_ERR("Can't unregister HCI line discipline (%d)", err); |
582 | } | |
583 | ||
584 | module_init(hci_uart_init); | |
585 | module_exit(hci_uart_exit); | |
586 | ||
587 | module_param(reset, bool, 0644); | |
588 | MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); | |
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); |