This source file includes following definitions.
- hci_uart_register_proto
- hci_uart_unregister_proto
- hci_uart_get_proto
- hci_uart_tx_complete
- hci_uart_dequeue
- hci_uart_tx_wakeup
- hci_uart_write_work
- hci_uart_init_work
- hci_uart_init_ready
- hci_uart_wait_until_sent
- hci_uart_flush
- hci_uart_open
- hci_uart_close
- hci_uart_send_frame
- hci_uart_has_flow_control
- hci_uart_set_flow_control
- hci_uart_set_speeds
- hci_uart_set_baudrate
- hci_uart_setup
- hci_uart_tty_open
- hci_uart_tty_close
- hci_uart_tty_wakeup
- hci_uart_tty_receive
- hci_uart_register_dev
- hci_uart_set_proto
- hci_uart_set_flags
- hci_uart_tty_ioctl
- hci_uart_tty_read
- hci_uart_tty_write
- hci_uart_tty_poll
- hci_uart_init
- hci_uart_exit
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9
10
11 #include <linux/module.h>
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/types.h>
16 #include <linux/fcntl.h>
17 #include <linux/interrupt.h>
18 #include <linux/ptrace.h>
19 #include <linux/poll.h>
20
21 #include <linux/slab.h>
22 #include <linux/tty.h>
23 #include <linux/errno.h>
24 #include <linux/string.h>
25 #include <linux/signal.h>
26 #include <linux/ioctl.h>
27 #include <linux/skbuff.h>
28 #include <linux/firmware.h>
29 #include <linux/serdev.h>
30
31 #include <net/bluetooth/bluetooth.h>
32 #include <net/bluetooth/hci_core.h>
33
34 #include "btintel.h"
35 #include "btbcm.h"
36 #include "hci_uart.h"
37
38 #define VERSION "2.3"
39
40 static const struct hci_uart_proto *hup[HCI_UART_MAX_PROTO];
41
42 int hci_uart_register_proto(const struct hci_uart_proto *p)
43 {
44 if (p->id >= HCI_UART_MAX_PROTO)
45 return -EINVAL;
46
47 if (hup[p->id])
48 return -EEXIST;
49
50 hup[p->id] = p;
51
52 BT_INFO("HCI UART protocol %s registered", p->name);
53
54 return 0;
55 }
56
57 int hci_uart_unregister_proto(const struct hci_uart_proto *p)
58 {
59 if (p->id >= HCI_UART_MAX_PROTO)
60 return -EINVAL;
61
62 if (!hup[p->id])
63 return -EINVAL;
64
65 hup[p->id] = NULL;
66
67 return 0;
68 }
69
70 static const struct hci_uart_proto *hci_uart_get_proto(unsigned int id)
71 {
72 if (id >= HCI_UART_MAX_PROTO)
73 return NULL;
74
75 return hup[id];
76 }
77
78 static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type)
79 {
80 struct hci_dev *hdev = hu->hdev;
81
82
83 switch (pkt_type) {
84 case HCI_COMMAND_PKT:
85 hdev->stat.cmd_tx++;
86 break;
87
88 case HCI_ACLDATA_PKT:
89 hdev->stat.acl_tx++;
90 break;
91
92 case HCI_SCODATA_PKT:
93 hdev->stat.sco_tx++;
94 break;
95 }
96 }
97
98 static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu)
99 {
100 struct sk_buff *skb = hu->tx_skb;
101
102 if (!skb) {
103 percpu_down_read(&hu->proto_lock);
104
105 if (test_bit(HCI_UART_PROTO_READY, &hu->flags))
106 skb = hu->proto->dequeue(hu);
107
108 percpu_up_read(&hu->proto_lock);
109 } else {
110 hu->tx_skb = NULL;
111 }
112
113 return skb;
114 }
115
116 int hci_uart_tx_wakeup(struct hci_uart *hu)
117 {
118
119
120
121
122
123
124 if (!percpu_down_read_trylock(&hu->proto_lock))
125 return 0;
126
127 if (!test_bit(HCI_UART_PROTO_READY, &hu->flags))
128 goto no_schedule;
129
130 if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) {
131 set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
132 goto no_schedule;
133 }
134
135 BT_DBG("");
136
137 schedule_work(&hu->write_work);
138
139 no_schedule:
140 percpu_up_read(&hu->proto_lock);
141
142 return 0;
143 }
144 EXPORT_SYMBOL_GPL(hci_uart_tx_wakeup);
145
146 static void hci_uart_write_work(struct work_struct *work)
147 {
148 struct hci_uart *hu = container_of(work, struct hci_uart, write_work);
149 struct tty_struct *tty = hu->tty;
150 struct hci_dev *hdev = hu->hdev;
151 struct sk_buff *skb;
152
153
154
155
156
157 restart:
158 clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
159
160 while ((skb = hci_uart_dequeue(hu))) {
161 int len;
162
163 set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
164 len = tty->ops->write(tty, skb->data, skb->len);
165 hdev->stat.byte_tx += len;
166
167 skb_pull(skb, len);
168 if (skb->len) {
169 hu->tx_skb = skb;
170 break;
171 }
172
173 hci_uart_tx_complete(hu, hci_skb_pkt_type(skb));
174 kfree_skb(skb);
175 }
176
177 if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state))
178 goto restart;
179
180 clear_bit(HCI_UART_SENDING, &hu->tx_state);
181 wake_up_bit(&hu->tx_state, HCI_UART_SENDING);
182 }
183
184 void hci_uart_init_work(struct work_struct *work)
185 {
186 struct hci_uart *hu = container_of(work, struct hci_uart, init_ready);
187 int err;
188 struct hci_dev *hdev;
189
190 if (!test_and_clear_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags))
191 return;
192
193 err = hci_register_dev(hu->hdev);
194 if (err < 0) {
195 BT_ERR("Can't register HCI device");
196 clear_bit(HCI_UART_PROTO_READY, &hu->flags);
197 hu->proto->close(hu);
198 hdev = hu->hdev;
199 hu->hdev = NULL;
200 hci_free_dev(hdev);
201 return;
202 }
203
204 set_bit(HCI_UART_REGISTERED, &hu->flags);
205 }
206
207 int hci_uart_init_ready(struct hci_uart *hu)
208 {
209 if (!test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags))
210 return -EALREADY;
211
212 schedule_work(&hu->init_ready);
213
214 return 0;
215 }
216
217 int hci_uart_wait_until_sent(struct hci_uart *hu)
218 {
219 return wait_on_bit_timeout(&hu->tx_state, HCI_UART_SENDING,
220 TASK_INTERRUPTIBLE,
221 msecs_to_jiffies(2000));
222 }
223
224
225
226 static int hci_uart_flush(struct hci_dev *hdev)
227 {
228 struct hci_uart *hu = hci_get_drvdata(hdev);
229 struct tty_struct *tty = hu->tty;
230
231 BT_DBG("hdev %p tty %p", hdev, tty);
232
233 if (hu->tx_skb) {
234 kfree_skb(hu->tx_skb); hu->tx_skb = NULL;
235 }
236
237
238 tty_ldisc_flush(tty);
239 tty_driver_flush_buffer(tty);
240
241 percpu_down_read(&hu->proto_lock);
242
243 if (test_bit(HCI_UART_PROTO_READY, &hu->flags))
244 hu->proto->flush(hu);
245
246 percpu_up_read(&hu->proto_lock);
247
248 return 0;
249 }
250
251
252 static int hci_uart_open(struct hci_dev *hdev)
253 {
254 BT_DBG("%s %p", hdev->name, hdev);
255
256
257 hdev->flush = hci_uart_flush;
258
259 return 0;
260 }
261
262
263 static int hci_uart_close(struct hci_dev *hdev)
264 {
265 BT_DBG("hdev %p", hdev);
266
267 hci_uart_flush(hdev);
268 hdev->flush = NULL;
269 return 0;
270 }
271
272
273 static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
274 {
275 struct hci_uart *hu = hci_get_drvdata(hdev);
276
277 BT_DBG("%s: type %d len %d", hdev->name, hci_skb_pkt_type(skb),
278 skb->len);
279
280 percpu_down_read(&hu->proto_lock);
281
282 if (!test_bit(HCI_UART_PROTO_READY, &hu->flags)) {
283 percpu_up_read(&hu->proto_lock);
284 return -EUNATCH;
285 }
286
287 hu->proto->enqueue(hu, skb);
288 percpu_up_read(&hu->proto_lock);
289
290 hci_uart_tx_wakeup(hu);
291
292 return 0;
293 }
294
295
296 bool hci_uart_has_flow_control(struct hci_uart *hu)
297 {
298
299 if (hu->serdev)
300 return true;
301
302 if (hu->tty->driver->ops->tiocmget && hu->tty->driver->ops->tiocmset)
303 return true;
304
305 return false;
306 }
307
308
309 void hci_uart_set_flow_control(struct hci_uart *hu, bool enable)
310 {
311 struct tty_struct *tty = hu->tty;
312 struct ktermios ktermios;
313 int status;
314 unsigned int set = 0;
315 unsigned int clear = 0;
316
317 if (hu->serdev) {
318 serdev_device_set_flow_control(hu->serdev, !enable);
319 serdev_device_set_rts(hu->serdev, !enable);
320 return;
321 }
322
323 if (enable) {
324
325 ktermios = tty->termios;
326 ktermios.c_cflag &= ~CRTSCTS;
327 status = tty_set_termios(tty, &ktermios);
328 BT_DBG("Disabling hardware flow control: %s",
329 status ? "failed" : "success");
330
331
332
333 status = tty->driver->ops->tiocmget(tty);
334 BT_DBG("Current tiocm 0x%x", status);
335
336 set &= ~(TIOCM_OUT2 | TIOCM_RTS);
337 clear = ~set;
338 set &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
339 TIOCM_OUT2 | TIOCM_LOOP;
340 clear &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
341 TIOCM_OUT2 | TIOCM_LOOP;
342 status = tty->driver->ops->tiocmset(tty, set, clear);
343 BT_DBG("Clearing RTS: %s", status ? "failed" : "success");
344 } else {
345
346 status = tty->driver->ops->tiocmget(tty);
347 BT_DBG("Current tiocm 0x%x", status);
348
349 set |= (TIOCM_OUT2 | TIOCM_RTS);
350 clear = ~set;
351 set &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
352 TIOCM_OUT2 | TIOCM_LOOP;
353 clear &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
354 TIOCM_OUT2 | TIOCM_LOOP;
355 status = tty->driver->ops->tiocmset(tty, set, clear);
356 BT_DBG("Setting RTS: %s", status ? "failed" : "success");
357
358
359 ktermios = tty->termios;
360 ktermios.c_cflag |= CRTSCTS;
361 status = tty_set_termios(tty, &ktermios);
362 BT_DBG("Enabling hardware flow control: %s",
363 status ? "failed" : "success");
364 }
365 }
366
367 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
368 unsigned int oper_speed)
369 {
370 hu->init_speed = init_speed;
371 hu->oper_speed = oper_speed;
372 }
373
374 void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed)
375 {
376 struct tty_struct *tty = hu->tty;
377 struct ktermios ktermios;
378
379 ktermios = tty->termios;
380 ktermios.c_cflag &= ~CBAUD;
381 tty_termios_encode_baud_rate(&ktermios, speed, speed);
382
383
384 tty_set_termios(tty, &ktermios);
385
386 BT_DBG("%s: New tty speeds: %d/%d", hu->hdev->name,
387 tty->termios.c_ispeed, tty->termios.c_ospeed);
388 }
389
390 static int hci_uart_setup(struct hci_dev *hdev)
391 {
392 struct hci_uart *hu = hci_get_drvdata(hdev);
393 struct hci_rp_read_local_version *ver;
394 struct sk_buff *skb;
395 unsigned int speed;
396 int err;
397
398
399 if (hu->init_speed)
400 speed = hu->init_speed;
401 else if (hu->proto->init_speed)
402 speed = hu->proto->init_speed;
403 else
404 speed = 0;
405
406 if (speed)
407 hci_uart_set_baudrate(hu, speed);
408
409
410 if (hu->oper_speed)
411 speed = hu->oper_speed;
412 else if (hu->proto->oper_speed)
413 speed = hu->proto->oper_speed;
414 else
415 speed = 0;
416
417 if (hu->proto->set_baudrate && speed) {
418 err = hu->proto->set_baudrate(hu, speed);
419 if (!err)
420 hci_uart_set_baudrate(hu, speed);
421 }
422
423 if (hu->proto->setup)
424 return hu->proto->setup(hu);
425
426 if (!test_bit(HCI_UART_VND_DETECT, &hu->hdev_flags))
427 return 0;
428
429 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
430 HCI_INIT_TIMEOUT);
431 if (IS_ERR(skb)) {
432 BT_ERR("%s: Reading local version information failed (%ld)",
433 hdev->name, PTR_ERR(skb));
434 return 0;
435 }
436
437 if (skb->len != sizeof(*ver)) {
438 BT_ERR("%s: Event length mismatch for version information",
439 hdev->name);
440 goto done;
441 }
442
443 ver = (struct hci_rp_read_local_version *)skb->data;
444
445 switch (le16_to_cpu(ver->manufacturer)) {
446 #ifdef CONFIG_BT_HCIUART_INTEL
447 case 2:
448 hdev->set_bdaddr = btintel_set_bdaddr;
449 btintel_check_bdaddr(hdev);
450 break;
451 #endif
452 #ifdef CONFIG_BT_HCIUART_BCM
453 case 15:
454 hdev->set_bdaddr = btbcm_set_bdaddr;
455 btbcm_check_bdaddr(hdev);
456 break;
457 #endif
458 default:
459 break;
460 }
461
462 done:
463 kfree_skb(skb);
464 return 0;
465 }
466
467
468
469
470
471
472
473
474
475
476
477 static int hci_uart_tty_open(struct tty_struct *tty)
478 {
479 struct hci_uart *hu;
480
481 BT_DBG("tty %p", tty);
482
483
484
485
486 if (tty->ops->write == NULL)
487 return -EOPNOTSUPP;
488
489 hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL);
490 if (!hu) {
491 BT_ERR("Can't allocate control structure");
492 return -ENFILE;
493 }
494
495 tty->disc_data = hu;
496 hu->tty = tty;
497 tty->receive_room = 65536;
498
499
500 hu->alignment = 1;
501 hu->padding = 0;
502
503 INIT_WORK(&hu->init_ready, hci_uart_init_work);
504 INIT_WORK(&hu->write_work, hci_uart_write_work);
505
506 percpu_init_rwsem(&hu->proto_lock);
507
508
509 tty_driver_flush_buffer(tty);
510
511 return 0;
512 }
513
514
515
516
517
518
519 static void hci_uart_tty_close(struct tty_struct *tty)
520 {
521 struct hci_uart *hu = tty->disc_data;
522 struct hci_dev *hdev;
523
524 BT_DBG("tty %p", tty);
525
526
527 tty->disc_data = NULL;
528
529 if (!hu)
530 return;
531
532 hdev = hu->hdev;
533 if (hdev)
534 hci_uart_close(hdev);
535
536 if (test_bit(HCI_UART_PROTO_READY, &hu->flags)) {
537 percpu_down_write(&hu->proto_lock);
538 clear_bit(HCI_UART_PROTO_READY, &hu->flags);
539 percpu_up_write(&hu->proto_lock);
540
541 cancel_work_sync(&hu->write_work);
542
543 if (hdev) {
544 if (test_bit(HCI_UART_REGISTERED, &hu->flags))
545 hci_unregister_dev(hdev);
546 hci_free_dev(hdev);
547 }
548 hu->proto->close(hu);
549 }
550 clear_bit(HCI_UART_PROTO_SET, &hu->flags);
551
552 percpu_free_rwsem(&hu->proto_lock);
553
554 kfree(hu);
555 }
556
557
558
559
560
561
562
563
564
565 static void hci_uart_tty_wakeup(struct tty_struct *tty)
566 {
567 struct hci_uart *hu = tty->disc_data;
568
569 BT_DBG("");
570
571 if (!hu)
572 return;
573
574 clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
575
576 if (tty != hu->tty)
577 return;
578
579 if (test_bit(HCI_UART_PROTO_READY, &hu->flags))
580 hci_uart_tx_wakeup(hu);
581 }
582
583
584
585
586
587
588
589
590
591
592
593
594
595 static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data,
596 char *flags, int count)
597 {
598 struct hci_uart *hu = tty->disc_data;
599
600 if (!hu || tty != hu->tty)
601 return;
602
603 percpu_down_read(&hu->proto_lock);
604
605 if (!test_bit(HCI_UART_PROTO_READY, &hu->flags)) {
606 percpu_up_read(&hu->proto_lock);
607 return;
608 }
609
610
611
612
613 hu->proto->recv(hu, data, count);
614 percpu_up_read(&hu->proto_lock);
615
616 if (hu->hdev)
617 hu->hdev->stat.byte_rx += count;
618
619 tty_unthrottle(tty);
620 }
621
622 static int hci_uart_register_dev(struct hci_uart *hu)
623 {
624 struct hci_dev *hdev;
625 int err;
626
627 BT_DBG("");
628
629
630 hdev = hci_alloc_dev();
631 if (!hdev) {
632 BT_ERR("Can't allocate HCI device");
633 return -ENOMEM;
634 }
635
636 hu->hdev = hdev;
637
638 hdev->bus = HCI_UART;
639 hci_set_drvdata(hdev, hu);
640
641
642
643
644
645 if (hu->proto->setup)
646 hdev->manufacturer = hu->proto->manufacturer;
647
648 hdev->open = hci_uart_open;
649 hdev->close = hci_uart_close;
650 hdev->flush = hci_uart_flush;
651 hdev->send = hci_uart_send_frame;
652 hdev->setup = hci_uart_setup;
653 SET_HCIDEV_DEV(hdev, hu->tty->dev);
654
655 if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags))
656 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
657
658 if (test_bit(HCI_UART_EXT_CONFIG, &hu->hdev_flags))
659 set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks);
660
661 if (!test_bit(HCI_UART_RESET_ON_INIT, &hu->hdev_flags))
662 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
663
664 if (test_bit(HCI_UART_CREATE_AMP, &hu->hdev_flags))
665 hdev->dev_type = HCI_AMP;
666 else
667 hdev->dev_type = HCI_PRIMARY;
668
669
670
671
672 err = hu->proto->open(hu);
673 if (err) {
674 hu->hdev = NULL;
675 hci_free_dev(hdev);
676 return err;
677 }
678
679 if (test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags))
680 return 0;
681
682 if (hci_register_dev(hdev) < 0) {
683 BT_ERR("Can't register HCI device");
684 hu->proto->close(hu);
685 hu->hdev = NULL;
686 hci_free_dev(hdev);
687 return -ENODEV;
688 }
689
690 set_bit(HCI_UART_REGISTERED, &hu->flags);
691
692 return 0;
693 }
694
695 static int hci_uart_set_proto(struct hci_uart *hu, int id)
696 {
697 const struct hci_uart_proto *p;
698 int err;
699
700 p = hci_uart_get_proto(id);
701 if (!p)
702 return -EPROTONOSUPPORT;
703
704 hu->proto = p;
705
706 err = hci_uart_register_dev(hu);
707 if (err) {
708 return err;
709 }
710
711 set_bit(HCI_UART_PROTO_READY, &hu->flags);
712 return 0;
713 }
714
715 static int hci_uart_set_flags(struct hci_uart *hu, unsigned long flags)
716 {
717 unsigned long valid_flags = BIT(HCI_UART_RAW_DEVICE) |
718 BIT(HCI_UART_RESET_ON_INIT) |
719 BIT(HCI_UART_CREATE_AMP) |
720 BIT(HCI_UART_INIT_PENDING) |
721 BIT(HCI_UART_EXT_CONFIG) |
722 BIT(HCI_UART_VND_DETECT);
723
724 if (flags & ~valid_flags)
725 return -EINVAL;
726
727 hu->hdev_flags = flags;
728
729 return 0;
730 }
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745 static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file *file,
746 unsigned int cmd, unsigned long arg)
747 {
748 struct hci_uart *hu = tty->disc_data;
749 int err = 0;
750
751 BT_DBG("");
752
753
754 if (!hu)
755 return -EBADF;
756
757 switch (cmd) {
758 case HCIUARTSETPROTO:
759 if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) {
760 err = hci_uart_set_proto(hu, arg);
761 if (err)
762 clear_bit(HCI_UART_PROTO_SET, &hu->flags);
763 } else
764 err = -EBUSY;
765 break;
766
767 case HCIUARTGETPROTO:
768 if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
769 err = hu->proto->id;
770 else
771 err = -EUNATCH;
772 break;
773
774 case HCIUARTGETDEVICE:
775 if (test_bit(HCI_UART_REGISTERED, &hu->flags))
776 err = hu->hdev->id;
777 else
778 err = -EUNATCH;
779 break;
780
781 case HCIUARTSETFLAGS:
782 if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
783 err = -EBUSY;
784 else
785 err = hci_uart_set_flags(hu, arg);
786 break;
787
788 case HCIUARTGETFLAGS:
789 err = hu->hdev_flags;
790 break;
791
792 default:
793 err = n_tty_ioctl_helper(tty, file, cmd, arg);
794 break;
795 }
796
797 return err;
798 }
799
800
801
802
803 static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file,
804 unsigned char __user *buf, size_t nr)
805 {
806 return 0;
807 }
808
809 static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file,
810 const unsigned char *data, size_t count)
811 {
812 return 0;
813 }
814
815 static __poll_t hci_uart_tty_poll(struct tty_struct *tty,
816 struct file *filp, poll_table *wait)
817 {
818 return 0;
819 }
820
821 static int __init hci_uart_init(void)
822 {
823 static struct tty_ldisc_ops hci_uart_ldisc;
824 int err;
825
826 BT_INFO("HCI UART driver ver %s", VERSION);
827
828
829
830 memset(&hci_uart_ldisc, 0, sizeof(hci_uart_ldisc));
831 hci_uart_ldisc.magic = TTY_LDISC_MAGIC;
832 hci_uart_ldisc.name = "n_hci";
833 hci_uart_ldisc.open = hci_uart_tty_open;
834 hci_uart_ldisc.close = hci_uart_tty_close;
835 hci_uart_ldisc.read = hci_uart_tty_read;
836 hci_uart_ldisc.write = hci_uart_tty_write;
837 hci_uart_ldisc.ioctl = hci_uart_tty_ioctl;
838 hci_uart_ldisc.compat_ioctl = hci_uart_tty_ioctl;
839 hci_uart_ldisc.poll = hci_uart_tty_poll;
840 hci_uart_ldisc.receive_buf = hci_uart_tty_receive;
841 hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup;
842 hci_uart_ldisc.owner = THIS_MODULE;
843
844 err = tty_register_ldisc(N_HCI, &hci_uart_ldisc);
845 if (err) {
846 BT_ERR("HCI line discipline registration failed. (%d)", err);
847 return err;
848 }
849
850 #ifdef CONFIG_BT_HCIUART_H4
851 h4_init();
852 #endif
853 #ifdef CONFIG_BT_HCIUART_BCSP
854 bcsp_init();
855 #endif
856 #ifdef CONFIG_BT_HCIUART_LL
857 ll_init();
858 #endif
859 #ifdef CONFIG_BT_HCIUART_ATH3K
860 ath_init();
861 #endif
862 #ifdef CONFIG_BT_HCIUART_3WIRE
863 h5_init();
864 #endif
865 #ifdef CONFIG_BT_HCIUART_INTEL
866 intel_init();
867 #endif
868 #ifdef CONFIG_BT_HCIUART_BCM
869 bcm_init();
870 #endif
871 #ifdef CONFIG_BT_HCIUART_QCA
872 qca_init();
873 #endif
874 #ifdef CONFIG_BT_HCIUART_AG6XX
875 ag6xx_init();
876 #endif
877 #ifdef CONFIG_BT_HCIUART_MRVL
878 mrvl_init();
879 #endif
880
881 return 0;
882 }
883
884 static void __exit hci_uart_exit(void)
885 {
886 int err;
887
888 #ifdef CONFIG_BT_HCIUART_H4
889 h4_deinit();
890 #endif
891 #ifdef CONFIG_BT_HCIUART_BCSP
892 bcsp_deinit();
893 #endif
894 #ifdef CONFIG_BT_HCIUART_LL
895 ll_deinit();
896 #endif
897 #ifdef CONFIG_BT_HCIUART_ATH3K
898 ath_deinit();
899 #endif
900 #ifdef CONFIG_BT_HCIUART_3WIRE
901 h5_deinit();
902 #endif
903 #ifdef CONFIG_BT_HCIUART_INTEL
904 intel_deinit();
905 #endif
906 #ifdef CONFIG_BT_HCIUART_BCM
907 bcm_deinit();
908 #endif
909 #ifdef CONFIG_BT_HCIUART_QCA
910 qca_deinit();
911 #endif
912 #ifdef CONFIG_BT_HCIUART_AG6XX
913 ag6xx_deinit();
914 #endif
915 #ifdef CONFIG_BT_HCIUART_MRVL
916 mrvl_deinit();
917 #endif
918
919
920 err = tty_unregister_ldisc(N_HCI);
921 if (err)
922 BT_ERR("Can't unregister HCI line discipline (%d)", err);
923 }
924
925 module_init(hci_uart_init);
926 module_exit(hci_uart_exit);
927
928 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
929 MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION);
930 MODULE_VERSION(VERSION);
931 MODULE_LICENSE("GPL");
932 MODULE_ALIAS_LDISC(N_HCI);