3 * Bluetooth HCI UART driver
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>
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.
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.
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
26 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/init.h>
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>
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 #include <linux/firmware.h>
44 #include <linux/serdev.h>
46 #include <net/bluetooth/bluetooth.h>
47 #include <net/bluetooth/hci_core.h>
55 static const struct hci_uart_proto
*hup
[HCI_UART_MAX_PROTO
];
57 int hci_uart_register_proto(const struct hci_uart_proto
*p
)
59 if (p
->id
>= HCI_UART_MAX_PROTO
)
67 BT_INFO("HCI UART protocol %s registered", p
->name
);
72 int hci_uart_unregister_proto(const struct hci_uart_proto
*p
)
74 if (p
->id
>= HCI_UART_MAX_PROTO
)
85 static const struct hci_uart_proto
*hci_uart_get_proto(unsigned int id
)
87 if (id
>= HCI_UART_MAX_PROTO
)
93 static inline void hci_uart_tx_complete(struct hci_uart
*hu
, int pkt_type
)
95 struct hci_dev
*hdev
= hu
->hdev
;
97 /* Update HCI stat counters */
103 case HCI_ACLDATA_PKT
:
107 case HCI_SCODATA_PKT
:
113 static inline struct sk_buff
*hci_uart_dequeue(struct hci_uart
*hu
)
115 struct sk_buff
*skb
= hu
->tx_skb
;
118 percpu_down_read(&hu
->proto_lock
);
120 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
121 skb
= hu
->proto
->dequeue(hu
);
123 percpu_up_read(&hu
->proto_lock
);
131 int hci_uart_tx_wakeup(struct hci_uart
*hu
)
133 /* This may be called in an IRQ context, so we can't sleep. Therefore
134 * we try to acquire the lock only, and if that fails we assume the
135 * tty is being closed because that is the only time the write lock is
136 * acquired. If, however, at some point in the future the write lock
137 * is also acquired in other situations, then this must be revisited.
139 if (!percpu_down_read_trylock(&hu
->proto_lock
))
142 if (!test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
145 if (test_and_set_bit(HCI_UART_SENDING
, &hu
->tx_state
)) {
146 set_bit(HCI_UART_TX_WAKEUP
, &hu
->tx_state
);
152 schedule_work(&hu
->write_work
);
155 percpu_up_read(&hu
->proto_lock
);
159 EXPORT_SYMBOL_GPL(hci_uart_tx_wakeup
);
161 static void hci_uart_write_work(struct work_struct
*work
)
163 struct hci_uart
*hu
= container_of(work
, struct hci_uart
, write_work
);
164 struct tty_struct
*tty
= hu
->tty
;
165 struct hci_dev
*hdev
= hu
->hdev
;
168 /* REVISIT: should we cope with bad skbs or ->write() returning
173 clear_bit(HCI_UART_TX_WAKEUP
, &hu
->tx_state
);
175 while ((skb
= hci_uart_dequeue(hu
))) {
178 set_bit(TTY_DO_WRITE_WAKEUP
, &tty
->flags
);
179 len
= tty
->ops
->write(tty
, skb
->data
, skb
->len
);
180 hdev
->stat
.byte_tx
+= len
;
188 hci_uart_tx_complete(hu
, hci_skb_pkt_type(skb
));
192 if (test_bit(HCI_UART_TX_WAKEUP
, &hu
->tx_state
))
195 clear_bit(HCI_UART_SENDING
, &hu
->tx_state
);
198 void hci_uart_init_work(struct work_struct
*work
)
200 struct hci_uart
*hu
= container_of(work
, struct hci_uart
, init_ready
);
202 struct hci_dev
*hdev
;
204 if (!test_and_clear_bit(HCI_UART_INIT_PENDING
, &hu
->hdev_flags
))
207 err
= hci_register_dev(hu
->hdev
);
209 BT_ERR("Can't register HCI device");
210 clear_bit(HCI_UART_PROTO_READY
, &hu
->flags
);
211 hu
->proto
->close(hu
);
218 set_bit(HCI_UART_REGISTERED
, &hu
->flags
);
221 int hci_uart_init_ready(struct hci_uart
*hu
)
223 if (!test_bit(HCI_UART_INIT_PENDING
, &hu
->hdev_flags
))
226 schedule_work(&hu
->init_ready
);
231 /* ------- Interface to HCI layer ------ */
233 static int hci_uart_flush(struct hci_dev
*hdev
)
235 struct hci_uart
*hu
= hci_get_drvdata(hdev
);
236 struct tty_struct
*tty
= hu
->tty
;
238 BT_DBG("hdev %p tty %p", hdev
, tty
);
241 kfree_skb(hu
->tx_skb
); hu
->tx_skb
= NULL
;
244 /* Flush any pending characters in the driver and discipline. */
245 tty_ldisc_flush(tty
);
246 tty_driver_flush_buffer(tty
);
248 percpu_down_read(&hu
->proto_lock
);
250 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
251 hu
->proto
->flush(hu
);
253 percpu_up_read(&hu
->proto_lock
);
258 /* Initialize device */
259 static int hci_uart_open(struct hci_dev
*hdev
)
261 BT_DBG("%s %p", hdev
->name
, hdev
);
263 /* Undo clearing this from hci_uart_close() */
264 hdev
->flush
= hci_uart_flush
;
270 static int hci_uart_close(struct hci_dev
*hdev
)
272 BT_DBG("hdev %p", hdev
);
274 hci_uart_flush(hdev
);
279 /* Send frames from HCI layer */
280 static int hci_uart_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
282 struct hci_uart
*hu
= hci_get_drvdata(hdev
);
284 BT_DBG("%s: type %d len %d", hdev
->name
, hci_skb_pkt_type(skb
),
287 percpu_down_read(&hu
->proto_lock
);
289 if (!test_bit(HCI_UART_PROTO_READY
, &hu
->flags
)) {
290 percpu_up_read(&hu
->proto_lock
);
294 hu
->proto
->enqueue(hu
, skb
);
295 percpu_up_read(&hu
->proto_lock
);
297 hci_uart_tx_wakeup(hu
);
302 /* Flow control or un-flow control the device */
303 void hci_uart_set_flow_control(struct hci_uart
*hu
, bool enable
)
305 struct tty_struct
*tty
= hu
->tty
;
306 struct ktermios ktermios
;
308 unsigned int set
= 0;
309 unsigned int clear
= 0;
312 serdev_device_set_flow_control(hu
->serdev
, !enable
);
313 serdev_device_set_rts(hu
->serdev
, !enable
);
318 /* Disable hardware flow control */
319 ktermios
= tty
->termios
;
320 ktermios
.c_cflag
&= ~CRTSCTS
;
321 status
= tty_set_termios(tty
, &ktermios
);
322 BT_DBG("Disabling hardware flow control: %s",
323 status
? "failed" : "success");
325 /* Clear RTS to prevent the device from sending */
326 /* Most UARTs need OUT2 to enable interrupts */
327 status
= tty
->driver
->ops
->tiocmget(tty
);
328 BT_DBG("Current tiocm 0x%x", status
);
330 set
&= ~(TIOCM_OUT2
| TIOCM_RTS
);
332 set
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
333 TIOCM_OUT2
| TIOCM_LOOP
;
334 clear
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
335 TIOCM_OUT2
| TIOCM_LOOP
;
336 status
= tty
->driver
->ops
->tiocmset(tty
, set
, clear
);
337 BT_DBG("Clearing RTS: %s", status
? "failed" : "success");
339 /* Set RTS to allow the device to send again */
340 status
= tty
->driver
->ops
->tiocmget(tty
);
341 BT_DBG("Current tiocm 0x%x", status
);
343 set
|= (TIOCM_OUT2
| TIOCM_RTS
);
345 set
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
346 TIOCM_OUT2
| TIOCM_LOOP
;
347 clear
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
348 TIOCM_OUT2
| TIOCM_LOOP
;
349 status
= tty
->driver
->ops
->tiocmset(tty
, set
, clear
);
350 BT_DBG("Setting RTS: %s", status
? "failed" : "success");
352 /* Re-enable hardware flow control */
353 ktermios
= tty
->termios
;
354 ktermios
.c_cflag
|= CRTSCTS
;
355 status
= tty_set_termios(tty
, &ktermios
);
356 BT_DBG("Enabling hardware flow control: %s",
357 status
? "failed" : "success");
361 void hci_uart_set_speeds(struct hci_uart
*hu
, unsigned int init_speed
,
362 unsigned int oper_speed
)
364 hu
->init_speed
= init_speed
;
365 hu
->oper_speed
= oper_speed
;
368 void hci_uart_set_baudrate(struct hci_uart
*hu
, unsigned int speed
)
370 struct tty_struct
*tty
= hu
->tty
;
371 struct ktermios ktermios
;
373 ktermios
= tty
->termios
;
374 ktermios
.c_cflag
&= ~CBAUD
;
375 tty_termios_encode_baud_rate(&ktermios
, speed
, speed
);
377 /* tty_set_termios() return not checked as it is always 0 */
378 tty_set_termios(tty
, &ktermios
);
380 BT_DBG("%s: New tty speeds: %d/%d", hu
->hdev
->name
,
381 tty
->termios
.c_ispeed
, tty
->termios
.c_ospeed
);
384 static int hci_uart_setup(struct hci_dev
*hdev
)
386 struct hci_uart
*hu
= hci_get_drvdata(hdev
);
387 struct hci_rp_read_local_version
*ver
;
392 /* Init speed if any */
394 speed
= hu
->init_speed
;
395 else if (hu
->proto
->init_speed
)
396 speed
= hu
->proto
->init_speed
;
401 hci_uart_set_baudrate(hu
, speed
);
403 /* Operational speed if any */
405 speed
= hu
->oper_speed
;
406 else if (hu
->proto
->oper_speed
)
407 speed
= hu
->proto
->oper_speed
;
411 if (hu
->proto
->set_baudrate
&& speed
) {
412 err
= hu
->proto
->set_baudrate(hu
, speed
);
414 hci_uart_set_baudrate(hu
, speed
);
417 if (hu
->proto
->setup
)
418 return hu
->proto
->setup(hu
);
420 if (!test_bit(HCI_UART_VND_DETECT
, &hu
->hdev_flags
))
423 skb
= __hci_cmd_sync(hdev
, HCI_OP_READ_LOCAL_VERSION
, 0, NULL
,
426 BT_ERR("%s: Reading local version information failed (%ld)",
427 hdev
->name
, PTR_ERR(skb
));
431 if (skb
->len
!= sizeof(*ver
)) {
432 BT_ERR("%s: Event length mismatch for version information",
437 ver
= (struct hci_rp_read_local_version
*)skb
->data
;
439 switch (le16_to_cpu(ver
->manufacturer
)) {
440 #ifdef CONFIG_BT_HCIUART_INTEL
442 hdev
->set_bdaddr
= btintel_set_bdaddr
;
443 btintel_check_bdaddr(hdev
);
446 #ifdef CONFIG_BT_HCIUART_BCM
448 hdev
->set_bdaddr
= btbcm_set_bdaddr
;
449 btbcm_check_bdaddr(hdev
);
461 /* ------ LDISC part ------ */
464 * Called when line discipline changed to HCI_UART.
467 * tty pointer to tty info structure
469 * 0 if success, otherwise error code
471 static int hci_uart_tty_open(struct tty_struct
*tty
)
475 BT_DBG("tty %p", tty
);
477 /* Error if the tty has no write op instead of leaving an exploitable
480 if (tty
->ops
->write
== NULL
)
483 hu
= kzalloc(sizeof(struct hci_uart
), GFP_KERNEL
);
485 BT_ERR("Can't allocate control structure");
491 tty
->receive_room
= 65536;
493 /* disable alignment support by default */
497 INIT_WORK(&hu
->init_ready
, hci_uart_init_work
);
498 INIT_WORK(&hu
->write_work
, hci_uart_write_work
);
500 percpu_init_rwsem(&hu
->proto_lock
);
502 /* Flush any pending characters in the driver */
503 tty_driver_flush_buffer(tty
);
508 /* hci_uart_tty_close()
510 * Called when the line discipline is changed to something
511 * else, the tty is closed, or the tty detects a hangup.
513 static void hci_uart_tty_close(struct tty_struct
*tty
)
515 struct hci_uart
*hu
= tty
->disc_data
;
516 struct hci_dev
*hdev
;
518 BT_DBG("tty %p", tty
);
520 /* Detach from the tty */
521 tty
->disc_data
= NULL
;
528 hci_uart_close(hdev
);
530 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
)) {
531 percpu_down_write(&hu
->proto_lock
);
532 clear_bit(HCI_UART_PROTO_READY
, &hu
->flags
);
533 percpu_up_write(&hu
->proto_lock
);
535 cancel_work_sync(&hu
->write_work
);
538 if (test_bit(HCI_UART_REGISTERED
, &hu
->flags
))
539 hci_unregister_dev(hdev
);
542 hu
->proto
->close(hu
);
544 clear_bit(HCI_UART_PROTO_SET
, &hu
->flags
);
546 percpu_free_rwsem(&hu
->proto_lock
);
551 /* hci_uart_tty_wakeup()
553 * Callback for transmit wakeup. Called when low level
554 * device driver can accept more send data.
556 * Arguments: tty pointer to associated tty instance data
559 static void hci_uart_tty_wakeup(struct tty_struct
*tty
)
561 struct hci_uart
*hu
= tty
->disc_data
;
568 clear_bit(TTY_DO_WRITE_WAKEUP
, &tty
->flags
);
573 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
574 hci_uart_tx_wakeup(hu
);
577 /* hci_uart_tty_receive()
579 * Called by tty low level driver when receive data is
582 * Arguments: tty pointer to tty isntance data
583 * data pointer to received data
584 * flags pointer to flags for data
585 * count count of received data in bytes
589 static void hci_uart_tty_receive(struct tty_struct
*tty
, const u8
*data
,
590 char *flags
, int count
)
592 struct hci_uart
*hu
= tty
->disc_data
;
594 if (!hu
|| tty
!= hu
->tty
)
597 percpu_down_read(&hu
->proto_lock
);
599 if (!test_bit(HCI_UART_PROTO_READY
, &hu
->flags
)) {
600 percpu_up_read(&hu
->proto_lock
);
604 /* It does not need a lock here as it is already protected by a mutex in
607 hu
->proto
->recv(hu
, data
, count
);
608 percpu_up_read(&hu
->proto_lock
);
611 hu
->hdev
->stat
.byte_rx
+= count
;
616 static int hci_uart_register_dev(struct hci_uart
*hu
)
618 struct hci_dev
*hdev
;
623 /* Initialize and register HCI device */
624 hdev
= hci_alloc_dev();
626 BT_ERR("Can't allocate HCI device");
632 hdev
->bus
= HCI_UART
;
633 hci_set_drvdata(hdev
, hu
);
635 /* Only when vendor specific setup callback is provided, consider
636 * the manufacturer information valid. This avoids filling in the
637 * value for Ericsson when nothing is specified.
639 if (hu
->proto
->setup
)
640 hdev
->manufacturer
= hu
->proto
->manufacturer
;
642 hdev
->open
= hci_uart_open
;
643 hdev
->close
= hci_uart_close
;
644 hdev
->flush
= hci_uart_flush
;
645 hdev
->send
= hci_uart_send_frame
;
646 hdev
->setup
= hci_uart_setup
;
647 SET_HCIDEV_DEV(hdev
, hu
->tty
->dev
);
649 if (test_bit(HCI_UART_RAW_DEVICE
, &hu
->hdev_flags
))
650 set_bit(HCI_QUIRK_RAW_DEVICE
, &hdev
->quirks
);
652 if (test_bit(HCI_UART_EXT_CONFIG
, &hu
->hdev_flags
))
653 set_bit(HCI_QUIRK_EXTERNAL_CONFIG
, &hdev
->quirks
);
655 if (!test_bit(HCI_UART_RESET_ON_INIT
, &hu
->hdev_flags
))
656 set_bit(HCI_QUIRK_RESET_ON_CLOSE
, &hdev
->quirks
);
658 if (test_bit(HCI_UART_CREATE_AMP
, &hu
->hdev_flags
))
659 hdev
->dev_type
= HCI_AMP
;
661 hdev
->dev_type
= HCI_PRIMARY
;
663 /* Only call open() for the protocol after hdev is fully initialized as
664 * open() (or a timer/workqueue it starts) may attempt to reference it.
666 err
= hu
->proto
->open(hu
);
673 if (test_bit(HCI_UART_INIT_PENDING
, &hu
->hdev_flags
))
676 if (hci_register_dev(hdev
) < 0) {
677 BT_ERR("Can't register HCI device");
678 hu
->proto
->close(hu
);
684 set_bit(HCI_UART_REGISTERED
, &hu
->flags
);
689 static int hci_uart_set_proto(struct hci_uart
*hu
, int id
)
691 const struct hci_uart_proto
*p
;
694 p
= hci_uart_get_proto(id
);
696 return -EPROTONOSUPPORT
;
700 err
= hci_uart_register_dev(hu
);
705 set_bit(HCI_UART_PROTO_READY
, &hu
->flags
);
709 static int hci_uart_set_flags(struct hci_uart
*hu
, unsigned long flags
)
711 unsigned long valid_flags
= BIT(HCI_UART_RAW_DEVICE
) |
712 BIT(HCI_UART_RESET_ON_INIT
) |
713 BIT(HCI_UART_CREATE_AMP
) |
714 BIT(HCI_UART_INIT_PENDING
) |
715 BIT(HCI_UART_EXT_CONFIG
) |
716 BIT(HCI_UART_VND_DETECT
);
718 if (flags
& ~valid_flags
)
721 hu
->hdev_flags
= flags
;
726 /* hci_uart_tty_ioctl()
728 * Process IOCTL system call for the tty device.
732 * tty pointer to tty instance data
733 * file pointer to open file object for device
734 * cmd IOCTL command code
735 * arg argument for IOCTL call (cmd dependent)
737 * Return Value: Command dependent
739 static int hci_uart_tty_ioctl(struct tty_struct
*tty
, struct file
*file
,
740 unsigned int cmd
, unsigned long arg
)
742 struct hci_uart
*hu
= tty
->disc_data
;
747 /* Verify the status of the device */
752 case HCIUARTSETPROTO
:
753 if (!test_and_set_bit(HCI_UART_PROTO_SET
, &hu
->flags
)) {
754 err
= hci_uart_set_proto(hu
, arg
);
756 clear_bit(HCI_UART_PROTO_SET
, &hu
->flags
);
761 case HCIUARTGETPROTO
:
762 if (test_bit(HCI_UART_PROTO_SET
, &hu
->flags
))
768 case HCIUARTGETDEVICE
:
769 if (test_bit(HCI_UART_REGISTERED
, &hu
->flags
))
775 case HCIUARTSETFLAGS
:
776 if (test_bit(HCI_UART_PROTO_SET
, &hu
->flags
))
779 err
= hci_uart_set_flags(hu
, arg
);
782 case HCIUARTGETFLAGS
:
783 err
= hu
->hdev_flags
;
787 err
= n_tty_ioctl_helper(tty
, file
, cmd
, arg
);
795 * We don't provide read/write/poll interface for user space.
797 static ssize_t
hci_uart_tty_read(struct tty_struct
*tty
, struct file
*file
,
798 unsigned char __user
*buf
, size_t nr
)
803 static ssize_t
hci_uart_tty_write(struct tty_struct
*tty
, struct file
*file
,
804 const unsigned char *data
, size_t count
)
809 static __poll_t
hci_uart_tty_poll(struct tty_struct
*tty
,
810 struct file
*filp
, poll_table
*wait
)
815 static int __init
hci_uart_init(void)
817 static struct tty_ldisc_ops hci_uart_ldisc
;
820 BT_INFO("HCI UART driver ver %s", VERSION
);
822 /* Register the tty discipline */
824 memset(&hci_uart_ldisc
, 0, sizeof(hci_uart_ldisc
));
825 hci_uart_ldisc
.magic
= TTY_LDISC_MAGIC
;
826 hci_uart_ldisc
.name
= "n_hci";
827 hci_uart_ldisc
.open
= hci_uart_tty_open
;
828 hci_uart_ldisc
.close
= hci_uart_tty_close
;
829 hci_uart_ldisc
.read
= hci_uart_tty_read
;
830 hci_uart_ldisc
.write
= hci_uart_tty_write
;
831 hci_uart_ldisc
.ioctl
= hci_uart_tty_ioctl
;
832 hci_uart_ldisc
.compat_ioctl
= hci_uart_tty_ioctl
;
833 hci_uart_ldisc
.poll
= hci_uart_tty_poll
;
834 hci_uart_ldisc
.receive_buf
= hci_uart_tty_receive
;
835 hci_uart_ldisc
.write_wakeup
= hci_uart_tty_wakeup
;
836 hci_uart_ldisc
.owner
= THIS_MODULE
;
838 err
= tty_register_ldisc(N_HCI
, &hci_uart_ldisc
);
840 BT_ERR("HCI line discipline registration failed. (%d)", err
);
844 #ifdef CONFIG_BT_HCIUART_H4
847 #ifdef CONFIG_BT_HCIUART_BCSP
850 #ifdef CONFIG_BT_HCIUART_LL
853 #ifdef CONFIG_BT_HCIUART_ATH3K
856 #ifdef CONFIG_BT_HCIUART_3WIRE
859 #ifdef CONFIG_BT_HCIUART_INTEL
862 #ifdef CONFIG_BT_HCIUART_BCM
865 #ifdef CONFIG_BT_HCIUART_QCA
868 #ifdef CONFIG_BT_HCIUART_AG6XX
871 #ifdef CONFIG_BT_HCIUART_MRVL
878 static void __exit
hci_uart_exit(void)
882 #ifdef CONFIG_BT_HCIUART_H4
885 #ifdef CONFIG_BT_HCIUART_BCSP
888 #ifdef CONFIG_BT_HCIUART_LL
891 #ifdef CONFIG_BT_HCIUART_ATH3K
894 #ifdef CONFIG_BT_HCIUART_3WIRE
897 #ifdef CONFIG_BT_HCIUART_INTEL
900 #ifdef CONFIG_BT_HCIUART_BCM
903 #ifdef CONFIG_BT_HCIUART_QCA
906 #ifdef CONFIG_BT_HCIUART_AG6XX
909 #ifdef CONFIG_BT_HCIUART_MRVL
913 /* Release tty registration of line discipline */
914 err
= tty_unregister_ldisc(N_HCI
);
916 BT_ERR("Can't unregister HCI line discipline (%d)", err
);
919 module_init(hci_uart_init
);
920 module_exit(hci_uart_exit
);
922 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
923 MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION
);
924 MODULE_VERSION(VERSION
);
925 MODULE_LICENSE("GPL");
926 MODULE_ALIAS_LDISC(N_HCI
);