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 | ||
9f2aee84 JH |
159 | static void hci_uart_init_work(struct work_struct *work) |
160 | { | |
161 | struct hci_uart *hu = container_of(work, struct hci_uart, init_ready); | |
162 | int err; | |
163 | ||
164 | if (!test_and_clear_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) | |
165 | return; | |
166 | ||
167 | err = hci_register_dev(hu->hdev); | |
168 | if (err < 0) { | |
169 | BT_ERR("Can't register HCI device"); | |
170 | hci_free_dev(hu->hdev); | |
171 | hu->hdev = NULL; | |
172 | hu->proto->close(hu); | |
173 | } | |
174 | ||
175 | set_bit(HCI_UART_REGISTERED, &hu->flags); | |
176 | } | |
177 | ||
178 | int hci_uart_init_ready(struct hci_uart *hu) | |
179 | { | |
180 | if (!test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) | |
181 | return -EALREADY; | |
182 | ||
183 | schedule_work(&hu->init_ready); | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
1da177e4 LT |
188 | /* ------- Interface to HCI layer ------ */ |
189 | /* Initialize device */ | |
190 | static int hci_uart_open(struct hci_dev *hdev) | |
191 | { | |
192 | BT_DBG("%s %p", hdev->name, hdev); | |
193 | ||
194 | /* Nothing to do for UART driver */ | |
195 | ||
196 | set_bit(HCI_RUNNING, &hdev->flags); | |
0372a662 | 197 | |
1da177e4 LT |
198 | return 0; |
199 | } | |
200 | ||
201 | /* Reset device */ | |
202 | static int hci_uart_flush(struct hci_dev *hdev) | |
203 | { | |
155961e8 | 204 | struct hci_uart *hu = hci_get_drvdata(hdev); |
1da177e4 LT |
205 | struct tty_struct *tty = hu->tty; |
206 | ||
207 | BT_DBG("hdev %p tty %p", hdev, tty); | |
208 | ||
209 | if (hu->tx_skb) { | |
210 | kfree_skb(hu->tx_skb); hu->tx_skb = NULL; | |
211 | } | |
212 | ||
213 | /* Flush any pending characters in the driver and discipline. */ | |
214 | tty_ldisc_flush(tty); | |
f34d7a5b | 215 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
216 | |
217 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
218 | hu->proto->flush(hu); | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | /* Close device */ | |
224 | static int hci_uart_close(struct hci_dev *hdev) | |
225 | { | |
226 | BT_DBG("hdev %p", hdev); | |
227 | ||
228 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) | |
229 | return 0; | |
230 | ||
231 | hci_uart_flush(hdev); | |
3611f4d2 | 232 | hdev->flush = NULL; |
1da177e4 LT |
233 | return 0; |
234 | } | |
235 | ||
236 | /* Send frames from HCI layer */ | |
237 | static int hci_uart_send_frame(struct sk_buff *skb) | |
238 | { | |
239 | struct hci_dev* hdev = (struct hci_dev *) skb->dev; | |
1da177e4 LT |
240 | struct hci_uart *hu; |
241 | ||
242 | if (!hdev) { | |
af901ca1 | 243 | BT_ERR("Frame for unknown device (hdev=NULL)"); |
1da177e4 LT |
244 | return -ENODEV; |
245 | } | |
246 | ||
247 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
248 | return -EBUSY; | |
249 | ||
155961e8 | 250 | hu = hci_get_drvdata(hdev); |
1da177e4 | 251 | |
0d48d939 | 252 | BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 LT |
253 | |
254 | hu->proto->enqueue(hu, skb); | |
255 | ||
256 | hci_uart_tx_wakeup(hu); | |
0372a662 | 257 | |
1da177e4 LT |
258 | return 0; |
259 | } | |
260 | ||
1da177e4 LT |
261 | /* ------ LDISC part ------ */ |
262 | /* hci_uart_tty_open | |
1687dfc3 | 263 | * |
1da177e4 LT |
264 | * Called when line discipline changed to HCI_UART. |
265 | * | |
266 | * Arguments: | |
267 | * tty pointer to tty info structure | |
1687dfc3 | 268 | * Return Value: |
1da177e4 LT |
269 | * 0 if success, otherwise error code |
270 | */ | |
271 | static int hci_uart_tty_open(struct tty_struct *tty) | |
272 | { | |
f327b340 | 273 | struct hci_uart *hu; |
1da177e4 LT |
274 | |
275 | BT_DBG("tty %p", tty); | |
276 | ||
c19483cc AC |
277 | /* Error if the tty has no write op instead of leaving an exploitable |
278 | hole */ | |
279 | if (tty->ops->write == NULL) | |
280 | return -EOPNOTSUPP; | |
281 | ||
089b1dbb | 282 | if (!(hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL))) { |
7785162c | 283 | BT_ERR("Can't allocate control structure"); |
1da177e4 LT |
284 | return -ENFILE; |
285 | } | |
0372a662 | 286 | |
1da177e4 LT |
287 | tty->disc_data = hu; |
288 | hu->tty = tty; | |
33f0f88f | 289 | tty->receive_room = 65536; |
1da177e4 | 290 | |
9f2aee84 JH |
291 | INIT_WORK(&hu->init_ready, hci_uart_init_work); |
292 | ||
1da177e4 LT |
293 | spin_lock_init(&hu->rx_lock); |
294 | ||
295 | /* Flush any pending characters in the driver and line discipline. */ | |
0372a662 | 296 | |
1da177e4 LT |
297 | /* FIXME: why is this needed. Note don't use ldisc_ref here as the |
298 | open path is before the ldisc is referencable */ | |
0372a662 | 299 | |
c65c9bc3 AC |
300 | if (tty->ldisc->ops->flush_buffer) |
301 | tty->ldisc->ops->flush_buffer(tty); | |
f34d7a5b | 302 | tty_driver_flush_buffer(tty); |
1da177e4 LT |
303 | |
304 | return 0; | |
305 | } | |
306 | ||
307 | /* hci_uart_tty_close() | |
308 | * | |
309 | * Called when the line discipline is changed to something | |
310 | * else, the tty is closed, or the tty detects a hangup. | |
311 | */ | |
312 | static void hci_uart_tty_close(struct tty_struct *tty) | |
313 | { | |
314 | struct hci_uart *hu = (void *)tty->disc_data; | |
dac670b9 | 315 | struct hci_dev *hdev; |
1da177e4 LT |
316 | |
317 | BT_DBG("tty %p", tty); | |
318 | ||
319 | /* Detach from the tty */ | |
320 | tty->disc_data = NULL; | |
321 | ||
dac670b9 JH |
322 | if (!hu) |
323 | return; | |
22ad4203 | 324 | |
dac670b9 JH |
325 | hdev = hu->hdev; |
326 | if (hdev) | |
327 | hci_uart_close(hdev); | |
1da177e4 | 328 | |
dac670b9 JH |
329 | if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { |
330 | if (hdev) { | |
9f2aee84 JH |
331 | if (test_bit(HCI_UART_REGISTERED, &hu->flags)) |
332 | hci_unregister_dev(hdev); | |
dac670b9 | 333 | hci_free_dev(hdev); |
1da177e4 | 334 | } |
dac670b9 | 335 | hu->proto->close(hu); |
1da177e4 | 336 | } |
dac670b9 JH |
337 | |
338 | kfree(hu); | |
1da177e4 LT |
339 | } |
340 | ||
341 | /* hci_uart_tty_wakeup() | |
342 | * | |
343 | * Callback for transmit wakeup. Called when low level | |
344 | * device driver can accept more send data. | |
345 | * | |
346 | * Arguments: tty pointer to associated tty instance data | |
347 | * Return Value: None | |
348 | */ | |
349 | static void hci_uart_tty_wakeup(struct tty_struct *tty) | |
350 | { | |
351 | struct hci_uart *hu = (void *)tty->disc_data; | |
352 | ||
353 | BT_DBG(""); | |
354 | ||
355 | if (!hu) | |
356 | return; | |
357 | ||
358 | clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); | |
359 | ||
360 | if (tty != hu->tty) | |
361 | return; | |
362 | ||
363 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
364 | hci_uart_tx_wakeup(hu); | |
365 | } | |
366 | ||
1da177e4 | 367 | /* hci_uart_tty_receive() |
1687dfc3 | 368 | * |
1da177e4 LT |
369 | * Called by tty low level driver when receive data is |
370 | * available. | |
1687dfc3 | 371 | * |
1da177e4 LT |
372 | * Arguments: tty pointer to tty isntance data |
373 | * data pointer to received data | |
374 | * flags pointer to flags for data | |
375 | * count count of received data in bytes | |
1687dfc3 | 376 | * |
55db4c64 | 377 | * Return Value: None |
1da177e4 | 378 | */ |
55db4c64 | 379 | static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, char *flags, int count) |
1da177e4 LT |
380 | { |
381 | struct hci_uart *hu = (void *)tty->disc_data; | |
0372a662 | 382 | |
1da177e4 | 383 | if (!hu || tty != hu->tty) |
55db4c64 | 384 | return; |
1da177e4 LT |
385 | |
386 | if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
55db4c64 | 387 | return; |
0372a662 | 388 | |
1da177e4 | 389 | spin_lock(&hu->rx_lock); |
55db4c64 | 390 | hu->proto->recv(hu, (void *) data, count); |
788f0923 CP |
391 | |
392 | if (hu->hdev) | |
393 | hu->hdev->stat.byte_rx += count; | |
394 | ||
1da177e4 LT |
395 | spin_unlock(&hu->rx_lock); |
396 | ||
39c2e60f | 397 | tty_unthrottle(tty); |
1da177e4 LT |
398 | } |
399 | ||
400 | static int hci_uart_register_dev(struct hci_uart *hu) | |
401 | { | |
402 | struct hci_dev *hdev; | |
403 | ||
404 | BT_DBG(""); | |
405 | ||
406 | /* Initialize and register HCI device */ | |
407 | hdev = hci_alloc_dev(); | |
408 | if (!hdev) { | |
409 | BT_ERR("Can't allocate HCI device"); | |
410 | return -ENOMEM; | |
411 | } | |
412 | ||
413 | hu->hdev = hdev; | |
414 | ||
c13854ce | 415 | hdev->bus = HCI_UART; |
155961e8 | 416 | hci_set_drvdata(hdev, hu); |
1da177e4 LT |
417 | |
418 | hdev->open = hci_uart_open; | |
419 | hdev->close = hci_uart_close; | |
420 | hdev->flush = hci_uart_flush; | |
421 | hdev->send = hci_uart_send_frame; | |
6935e0f5 | 422 | SET_HCIDEV_DEV(hdev, hu->tty->dev); |
1da177e4 | 423 | |
63c7d09c JH |
424 | if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) |
425 | set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); | |
426 | ||
a55e1f38 | 427 | if (!test_bit(HCI_UART_RESET_ON_INIT, &hu->hdev_flags)) |
a6c511c6 | 428 | set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); |
a55e1f38 | 429 | |
8a7a3fd6 MH |
430 | if (test_bit(HCI_UART_CREATE_AMP, &hu->hdev_flags)) |
431 | hdev->dev_type = HCI_AMP; | |
432 | else | |
433 | hdev->dev_type = HCI_BREDR; | |
434 | ||
9f2aee84 JH |
435 | if (test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) |
436 | return 0; | |
437 | ||
1da177e4 LT |
438 | if (hci_register_dev(hdev) < 0) { |
439 | BT_ERR("Can't register HCI device"); | |
440 | hci_free_dev(hdev); | |
441 | return -ENODEV; | |
442 | } | |
443 | ||
9f2aee84 JH |
444 | set_bit(HCI_UART_REGISTERED, &hu->flags); |
445 | ||
1da177e4 LT |
446 | return 0; |
447 | } | |
448 | ||
449 | static int hci_uart_set_proto(struct hci_uart *hu, int id) | |
450 | { | |
451 | struct hci_uart_proto *p; | |
0372a662 MH |
452 | int err; |
453 | ||
1da177e4 LT |
454 | p = hci_uart_get_proto(id); |
455 | if (!p) | |
456 | return -EPROTONOSUPPORT; | |
457 | ||
458 | err = p->open(hu); | |
459 | if (err) | |
460 | return err; | |
461 | ||
462 | hu->proto = p; | |
463 | ||
464 | err = hci_uart_register_dev(hu); | |
465 | if (err) { | |
466 | p->close(hu); | |
467 | return err; | |
468 | } | |
0372a662 | 469 | |
1da177e4 LT |
470 | return 0; |
471 | } | |
472 | ||
473 | /* hci_uart_tty_ioctl() | |
474 | * | |
475 | * Process IOCTL system call for the tty device. | |
476 | * | |
477 | * Arguments: | |
478 | * | |
479 | * tty pointer to tty instance data | |
480 | * file pointer to open file object for device | |
481 | * cmd IOCTL command code | |
482 | * arg argument for IOCTL call (cmd dependent) | |
483 | * | |
484 | * Return Value: Command dependent | |
485 | */ | |
486 | static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, | |
0372a662 | 487 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
488 | { |
489 | struct hci_uart *hu = (void *)tty->disc_data; | |
490 | int err = 0; | |
491 | ||
492 | BT_DBG(""); | |
493 | ||
494 | /* Verify the status of the device */ | |
495 | if (!hu) | |
496 | return -EBADF; | |
497 | ||
498 | switch (cmd) { | |
499 | case HCIUARTSETPROTO: | |
500 | if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) { | |
501 | err = hci_uart_set_proto(hu, arg); | |
502 | if (err) { | |
503 | clear_bit(HCI_UART_PROTO_SET, &hu->flags); | |
504 | return err; | |
505 | } | |
0372a662 | 506 | } else |
1da177e4 | 507 | return -EBUSY; |
c33be3c3 | 508 | break; |
1da177e4 LT |
509 | |
510 | case HCIUARTGETPROTO: | |
511 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
512 | return hu->proto->id; | |
513 | return -EUNATCH; | |
0372a662 | 514 | |
d2158744 MH |
515 | case HCIUARTGETDEVICE: |
516 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
517 | return hu->hdev->id; | |
518 | return -EUNATCH; | |
519 | ||
63c7d09c JH |
520 | case HCIUARTSETFLAGS: |
521 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) | |
522 | return -EBUSY; | |
523 | hu->hdev_flags = arg; | |
524 | break; | |
525 | ||
526 | case HCIUARTGETFLAGS: | |
527 | return hu->hdev_flags; | |
528 | ||
1da177e4 | 529 | default: |
47afa7a5 | 530 | err = n_tty_ioctl_helper(tty, file, cmd, arg); |
1da177e4 | 531 | break; |
a20890d0 | 532 | } |
1da177e4 LT |
533 | |
534 | return err; | |
535 | } | |
536 | ||
537 | /* | |
538 | * We don't provide read/write/poll interface for user space. | |
539 | */ | |
0372a662 MH |
540 | static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, |
541 | unsigned char __user *buf, size_t nr) | |
1da177e4 LT |
542 | { |
543 | return 0; | |
544 | } | |
0372a662 MH |
545 | |
546 | static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, | |
547 | const unsigned char *data, size_t count) | |
1da177e4 LT |
548 | { |
549 | return 0; | |
550 | } | |
0372a662 MH |
551 | |
552 | static unsigned int hci_uart_tty_poll(struct tty_struct *tty, | |
553 | struct file *filp, poll_table *wait) | |
1da177e4 LT |
554 | { |
555 | return 0; | |
556 | } | |
557 | ||
1da177e4 LT |
558 | static int __init hci_uart_init(void) |
559 | { | |
a352def2 | 560 | static struct tty_ldisc_ops hci_uart_ldisc; |
1da177e4 LT |
561 | int err; |
562 | ||
563 | BT_INFO("HCI UART driver ver %s", VERSION); | |
564 | ||
565 | /* Register the tty discipline */ | |
566 | ||
567 | memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc)); | |
0372a662 MH |
568 | hci_uart_ldisc.magic = TTY_LDISC_MAGIC; |
569 | hci_uart_ldisc.name = "n_hci"; | |
570 | hci_uart_ldisc.open = hci_uart_tty_open; | |
571 | hci_uart_ldisc.close = hci_uart_tty_close; | |
572 | hci_uart_ldisc.read = hci_uart_tty_read; | |
573 | hci_uart_ldisc.write = hci_uart_tty_write; | |
574 | hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; | |
575 | hci_uart_ldisc.poll = hci_uart_tty_poll; | |
0372a662 MH |
576 | hci_uart_ldisc.receive_buf = hci_uart_tty_receive; |
577 | hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; | |
578 | hci_uart_ldisc.owner = THIS_MODULE; | |
1da177e4 LT |
579 | |
580 | if ((err = tty_register_ldisc(N_HCI, &hci_uart_ldisc))) { | |
581 | BT_ERR("HCI line discipline registration failed. (%d)", err); | |
582 | return err; | |
583 | } | |
584 | ||
585 | #ifdef CONFIG_BT_HCIUART_H4 | |
586 | h4_init(); | |
587 | #endif | |
588 | #ifdef CONFIG_BT_HCIUART_BCSP | |
589 | bcsp_init(); | |
590 | #endif | |
166d2f6a OBC |
591 | #ifdef CONFIG_BT_HCIUART_LL |
592 | ll_init(); | |
593 | #endif | |
b3190df6 SS |
594 | #ifdef CONFIG_BT_HCIUART_ATH3K |
595 | ath_init(); | |
596 | #endif | |
7dec65c8 JH |
597 | #ifdef CONFIG_BT_HCIUART_3WIRE |
598 | h5_init(); | |
599 | #endif | |
166d2f6a | 600 | |
1da177e4 LT |
601 | return 0; |
602 | } | |
603 | ||
604 | static void __exit hci_uart_exit(void) | |
605 | { | |
606 | int err; | |
607 | ||
608 | #ifdef CONFIG_BT_HCIUART_H4 | |
609 | h4_deinit(); | |
610 | #endif | |
611 | #ifdef CONFIG_BT_HCIUART_BCSP | |
612 | bcsp_deinit(); | |
613 | #endif | |
166d2f6a OBC |
614 | #ifdef CONFIG_BT_HCIUART_LL |
615 | ll_deinit(); | |
616 | #endif | |
b3190df6 SS |
617 | #ifdef CONFIG_BT_HCIUART_ATH3K |
618 | ath_deinit(); | |
619 | #endif | |
7dec65c8 JH |
620 | #ifdef CONFIG_BT_HCIUART_3WIRE |
621 | h5_deinit(); | |
622 | #endif | |
1da177e4 LT |
623 | |
624 | /* Release tty registration of line discipline */ | |
64ccd715 | 625 | if ((err = tty_unregister_ldisc(N_HCI))) |
1da177e4 LT |
626 | BT_ERR("Can't unregister HCI line discipline (%d)", err); |
627 | } | |
628 | ||
629 | module_init(hci_uart_init); | |
630 | module_exit(hci_uart_exit); | |
631 | ||
63fbd24e | 632 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
633 | MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION); |
634 | MODULE_VERSION(VERSION); | |
635 | MODULE_LICENSE("GPL"); | |
636 | MODULE_ALIAS_LDISC(N_HCI); |