1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Bluetooth HCI UART driver
6 * Copyright (C) 2000-2001 Qualcomm Incorporated
7 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
8 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
11 #include <linux/module.h>
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>
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>
31 #include <net/bluetooth/bluetooth.h>
32 #include <net/bluetooth/hci_core.h>
40 static const struct hci_uart_proto
*hup
[HCI_UART_MAX_PROTO
];
42 int hci_uart_register_proto(const struct hci_uart_proto
*p
)
44 if (p
->id
>= HCI_UART_MAX_PROTO
)
52 BT_INFO("HCI UART protocol %s registered", p
->name
);
57 int hci_uart_unregister_proto(const struct hci_uart_proto
*p
)
59 if (p
->id
>= HCI_UART_MAX_PROTO
)
70 static const struct hci_uart_proto
*hci_uart_get_proto(unsigned int id
)
72 if (id
>= HCI_UART_MAX_PROTO
)
78 static inline void hci_uart_tx_complete(struct hci_uart
*hu
, int pkt_type
)
80 struct hci_dev
*hdev
= hu
->hdev
;
82 /* Update HCI stat counters */
98 static inline struct sk_buff
*hci_uart_dequeue(struct hci_uart
*hu
)
100 struct sk_buff
*skb
= hu
->tx_skb
;
103 percpu_down_read(&hu
->proto_lock
);
105 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
106 skb
= hu
->proto
->dequeue(hu
);
108 percpu_up_read(&hu
->proto_lock
);
116 int hci_uart_tx_wakeup(struct hci_uart
*hu
)
118 /* This may be called in an IRQ context, so we can't sleep. Therefore
119 * we try to acquire the lock only, and if that fails we assume the
120 * tty is being closed because that is the only time the write lock is
121 * acquired. If, however, at some point in the future the write lock
122 * is also acquired in other situations, then this must be revisited.
124 if (!percpu_down_read_trylock(&hu
->proto_lock
))
127 if (!test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
130 set_bit(HCI_UART_TX_WAKEUP
, &hu
->tx_state
);
131 if (test_and_set_bit(HCI_UART_SENDING
, &hu
->tx_state
))
136 schedule_work(&hu
->write_work
);
139 percpu_up_read(&hu
->proto_lock
);
143 EXPORT_SYMBOL_GPL(hci_uart_tx_wakeup
);
145 static void hci_uart_write_work(struct work_struct
*work
)
147 struct hci_uart
*hu
= container_of(work
, struct hci_uart
, write_work
);
148 struct tty_struct
*tty
= hu
->tty
;
149 struct hci_dev
*hdev
= hu
->hdev
;
152 /* REVISIT: should we cope with bad skbs or ->write() returning
157 clear_bit(HCI_UART_TX_WAKEUP
, &hu
->tx_state
);
159 while ((skb
= hci_uart_dequeue(hu
))) {
162 set_bit(TTY_DO_WRITE_WAKEUP
, &tty
->flags
);
163 len
= tty
->ops
->write(tty
, skb
->data
, skb
->len
);
164 hdev
->stat
.byte_tx
+= len
;
172 hci_uart_tx_complete(hu
, hci_skb_pkt_type(skb
));
176 clear_bit(HCI_UART_SENDING
, &hu
->tx_state
);
177 if (test_bit(HCI_UART_TX_WAKEUP
, &hu
->tx_state
))
180 wake_up_bit(&hu
->tx_state
, HCI_UART_SENDING
);
183 void hci_uart_init_work(struct work_struct
*work
)
185 struct hci_uart
*hu
= container_of(work
, struct hci_uart
, init_ready
);
187 struct hci_dev
*hdev
;
189 if (!test_and_clear_bit(HCI_UART_INIT_PENDING
, &hu
->hdev_flags
))
192 err
= hci_register_dev(hu
->hdev
);
194 BT_ERR("Can't register HCI device");
195 clear_bit(HCI_UART_PROTO_READY
, &hu
->flags
);
196 hu
->proto
->close(hu
);
203 set_bit(HCI_UART_REGISTERED
, &hu
->flags
);
206 int hci_uart_init_ready(struct hci_uart
*hu
)
208 if (!test_bit(HCI_UART_INIT_PENDING
, &hu
->hdev_flags
))
211 schedule_work(&hu
->init_ready
);
216 int hci_uart_wait_until_sent(struct hci_uart
*hu
)
218 return wait_on_bit_timeout(&hu
->tx_state
, HCI_UART_SENDING
,
220 msecs_to_jiffies(2000));
223 /* ------- Interface to HCI layer ------ */
225 static int hci_uart_flush(struct hci_dev
*hdev
)
227 struct hci_uart
*hu
= hci_get_drvdata(hdev
);
228 struct tty_struct
*tty
= hu
->tty
;
230 BT_DBG("hdev %p tty %p", hdev
, tty
);
233 kfree_skb(hu
->tx_skb
); hu
->tx_skb
= NULL
;
236 /* Flush any pending characters in the driver and discipline. */
237 tty_ldisc_flush(tty
);
238 tty_driver_flush_buffer(tty
);
240 percpu_down_read(&hu
->proto_lock
);
242 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
243 hu
->proto
->flush(hu
);
245 percpu_up_read(&hu
->proto_lock
);
250 /* Initialize device */
251 static int hci_uart_open(struct hci_dev
*hdev
)
253 BT_DBG("%s %p", hdev
->name
, hdev
);
255 /* Undo clearing this from hci_uart_close() */
256 hdev
->flush
= hci_uart_flush
;
262 static int hci_uart_close(struct hci_dev
*hdev
)
264 BT_DBG("hdev %p", hdev
);
266 hci_uart_flush(hdev
);
271 /* Send frames from HCI layer */
272 static int hci_uart_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
274 struct hci_uart
*hu
= hci_get_drvdata(hdev
);
276 BT_DBG("%s: type %d len %d", hdev
->name
, hci_skb_pkt_type(skb
),
279 percpu_down_read(&hu
->proto_lock
);
281 if (!test_bit(HCI_UART_PROTO_READY
, &hu
->flags
)) {
282 percpu_up_read(&hu
->proto_lock
);
286 hu
->proto
->enqueue(hu
, skb
);
287 percpu_up_read(&hu
->proto_lock
);
289 hci_uart_tx_wakeup(hu
);
294 /* Check the underlying device or tty has flow control support */
295 bool hci_uart_has_flow_control(struct hci_uart
*hu
)
297 /* serdev nodes check if the needed operations are present */
301 if (hu
->tty
->driver
->ops
->tiocmget
&& hu
->tty
->driver
->ops
->tiocmset
)
307 /* Flow control or un-flow control the device */
308 void hci_uart_set_flow_control(struct hci_uart
*hu
, bool enable
)
310 struct tty_struct
*tty
= hu
->tty
;
311 struct ktermios ktermios
;
313 unsigned int set
= 0;
314 unsigned int clear
= 0;
317 serdev_device_set_flow_control(hu
->serdev
, !enable
);
318 serdev_device_set_rts(hu
->serdev
, !enable
);
323 /* Disable hardware flow control */
324 ktermios
= tty
->termios
;
325 ktermios
.c_cflag
&= ~CRTSCTS
;
326 status
= tty_set_termios(tty
, &ktermios
);
327 BT_DBG("Disabling hardware flow control: %s",
328 status
? "failed" : "success");
330 /* Clear RTS to prevent the device from sending */
331 /* Most UARTs need OUT2 to enable interrupts */
332 status
= tty
->driver
->ops
->tiocmget(tty
);
333 BT_DBG("Current tiocm 0x%x", status
);
335 set
&= ~(TIOCM_OUT2
| TIOCM_RTS
);
337 set
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
338 TIOCM_OUT2
| TIOCM_LOOP
;
339 clear
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
340 TIOCM_OUT2
| TIOCM_LOOP
;
341 status
= tty
->driver
->ops
->tiocmset(tty
, set
, clear
);
342 BT_DBG("Clearing RTS: %s", status
? "failed" : "success");
344 /* Set RTS to allow the device to send again */
345 status
= tty
->driver
->ops
->tiocmget(tty
);
346 BT_DBG("Current tiocm 0x%x", status
);
348 set
|= (TIOCM_OUT2
| TIOCM_RTS
);
350 set
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
351 TIOCM_OUT2
| TIOCM_LOOP
;
352 clear
&= TIOCM_DTR
| TIOCM_RTS
| TIOCM_OUT1
|
353 TIOCM_OUT2
| TIOCM_LOOP
;
354 status
= tty
->driver
->ops
->tiocmset(tty
, set
, clear
);
355 BT_DBG("Setting RTS: %s", status
? "failed" : "success");
357 /* Re-enable hardware flow control */
358 ktermios
= tty
->termios
;
359 ktermios
.c_cflag
|= CRTSCTS
;
360 status
= tty_set_termios(tty
, &ktermios
);
361 BT_DBG("Enabling hardware flow control: %s",
362 status
? "failed" : "success");
366 void hci_uart_set_speeds(struct hci_uart
*hu
, unsigned int init_speed
,
367 unsigned int oper_speed
)
369 hu
->init_speed
= init_speed
;
370 hu
->oper_speed
= oper_speed
;
373 void hci_uart_set_baudrate(struct hci_uart
*hu
, unsigned int speed
)
375 struct tty_struct
*tty
= hu
->tty
;
376 struct ktermios ktermios
;
378 ktermios
= tty
->termios
;
379 ktermios
.c_cflag
&= ~CBAUD
;
380 tty_termios_encode_baud_rate(&ktermios
, speed
, speed
);
382 /* tty_set_termios() return not checked as it is always 0 */
383 tty_set_termios(tty
, &ktermios
);
385 BT_DBG("%s: New tty speeds: %d/%d", hu
->hdev
->name
,
386 tty
->termios
.c_ispeed
, tty
->termios
.c_ospeed
);
389 static int hci_uart_setup(struct hci_dev
*hdev
)
391 struct hci_uart
*hu
= hci_get_drvdata(hdev
);
392 struct hci_rp_read_local_version
*ver
;
397 /* Init speed if any */
399 speed
= hu
->init_speed
;
400 else if (hu
->proto
->init_speed
)
401 speed
= hu
->proto
->init_speed
;
406 hci_uart_set_baudrate(hu
, speed
);
408 /* Operational speed if any */
410 speed
= hu
->oper_speed
;
411 else if (hu
->proto
->oper_speed
)
412 speed
= hu
->proto
->oper_speed
;
416 if (hu
->proto
->set_baudrate
&& speed
) {
417 err
= hu
->proto
->set_baudrate(hu
, speed
);
419 hci_uart_set_baudrate(hu
, speed
);
422 if (hu
->proto
->setup
)
423 return hu
->proto
->setup(hu
);
425 if (!test_bit(HCI_UART_VND_DETECT
, &hu
->hdev_flags
))
428 skb
= __hci_cmd_sync(hdev
, HCI_OP_READ_LOCAL_VERSION
, 0, NULL
,
431 BT_ERR("%s: Reading local version information failed (%ld)",
432 hdev
->name
, PTR_ERR(skb
));
436 if (skb
->len
!= sizeof(*ver
)) {
437 BT_ERR("%s: Event length mismatch for version information",
442 ver
= (struct hci_rp_read_local_version
*)skb
->data
;
444 switch (le16_to_cpu(ver
->manufacturer
)) {
445 #ifdef CONFIG_BT_HCIUART_INTEL
447 hdev
->set_bdaddr
= btintel_set_bdaddr
;
448 btintel_check_bdaddr(hdev
);
451 #ifdef CONFIG_BT_HCIUART_BCM
453 hdev
->set_bdaddr
= btbcm_set_bdaddr
;
454 btbcm_check_bdaddr(hdev
);
466 /* ------ LDISC part ------ */
469 * Called when line discipline changed to HCI_UART.
472 * tty pointer to tty info structure
474 * 0 if success, otherwise error code
476 static int hci_uart_tty_open(struct tty_struct
*tty
)
480 BT_DBG("tty %p", tty
);
482 if (!capable(CAP_NET_ADMIN
))
485 /* Error if the tty has no write op instead of leaving an exploitable
488 if (tty
->ops
->write
== NULL
)
491 hu
= kzalloc(sizeof(struct hci_uart
), GFP_KERNEL
);
493 BT_ERR("Can't allocate control structure");
499 tty
->receive_room
= 65536;
501 /* disable alignment support by default */
505 INIT_WORK(&hu
->init_ready
, hci_uart_init_work
);
506 INIT_WORK(&hu
->write_work
, hci_uart_write_work
);
508 percpu_init_rwsem(&hu
->proto_lock
);
510 /* Flush any pending characters in the driver */
511 tty_driver_flush_buffer(tty
);
516 /* hci_uart_tty_close()
518 * Called when the line discipline is changed to something
519 * else, the tty is closed, or the tty detects a hangup.
521 static void hci_uart_tty_close(struct tty_struct
*tty
)
523 struct hci_uart
*hu
= tty
->disc_data
;
524 struct hci_dev
*hdev
;
526 BT_DBG("tty %p", tty
);
528 /* Detach from the tty */
529 tty
->disc_data
= NULL
;
536 hci_uart_close(hdev
);
538 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
)) {
539 percpu_down_write(&hu
->proto_lock
);
540 clear_bit(HCI_UART_PROTO_READY
, &hu
->flags
);
541 percpu_up_write(&hu
->proto_lock
);
543 cancel_work_sync(&hu
->init_ready
);
544 cancel_work_sync(&hu
->write_work
);
547 if (test_bit(HCI_UART_REGISTERED
, &hu
->flags
))
548 hci_unregister_dev(hdev
);
551 hu
->proto
->close(hu
);
553 clear_bit(HCI_UART_PROTO_SET
, &hu
->flags
);
555 percpu_free_rwsem(&hu
->proto_lock
);
560 /* hci_uart_tty_wakeup()
562 * Callback for transmit wakeup. Called when low level
563 * device driver can accept more send data.
565 * Arguments: tty pointer to associated tty instance data
568 static void hci_uart_tty_wakeup(struct tty_struct
*tty
)
570 struct hci_uart
*hu
= tty
->disc_data
;
577 clear_bit(TTY_DO_WRITE_WAKEUP
, &tty
->flags
);
582 if (test_bit(HCI_UART_PROTO_READY
, &hu
->flags
))
583 hci_uart_tx_wakeup(hu
);
586 /* hci_uart_tty_receive()
588 * Called by tty low level driver when receive data is
591 * Arguments: tty pointer to tty isntance data
592 * data pointer to received data
593 * flags pointer to flags for data
594 * count count of received data in bytes
598 static void hci_uart_tty_receive(struct tty_struct
*tty
, const u8
*data
,
599 char *flags
, int count
)
601 struct hci_uart
*hu
= tty
->disc_data
;
603 if (!hu
|| tty
!= hu
->tty
)
606 percpu_down_read(&hu
->proto_lock
);
608 if (!test_bit(HCI_UART_PROTO_READY
, &hu
->flags
)) {
609 percpu_up_read(&hu
->proto_lock
);
613 /* It does not need a lock here as it is already protected by a mutex in
616 hu
->proto
->recv(hu
, data
, count
);
617 percpu_up_read(&hu
->proto_lock
);
620 hu
->hdev
->stat
.byte_rx
+= count
;
625 static int hci_uart_register_dev(struct hci_uart
*hu
)
627 struct hci_dev
*hdev
;
632 /* Initialize and register HCI device */
633 hdev
= hci_alloc_dev();
635 BT_ERR("Can't allocate HCI device");
641 hdev
->bus
= HCI_UART
;
642 hci_set_drvdata(hdev
, hu
);
644 /* Only when vendor specific setup callback is provided, consider
645 * the manufacturer information valid. This avoids filling in the
646 * value for Ericsson when nothing is specified.
648 if (hu
->proto
->setup
)
649 hdev
->manufacturer
= hu
->proto
->manufacturer
;
651 hdev
->open
= hci_uart_open
;
652 hdev
->close
= hci_uart_close
;
653 hdev
->flush
= hci_uart_flush
;
654 hdev
->send
= hci_uart_send_frame
;
655 hdev
->setup
= hci_uart_setup
;
656 SET_HCIDEV_DEV(hdev
, hu
->tty
->dev
);
658 if (test_bit(HCI_UART_RAW_DEVICE
, &hu
->hdev_flags
))
659 set_bit(HCI_QUIRK_RAW_DEVICE
, &hdev
->quirks
);
661 if (test_bit(HCI_UART_EXT_CONFIG
, &hu
->hdev_flags
))
662 set_bit(HCI_QUIRK_EXTERNAL_CONFIG
, &hdev
->quirks
);
664 if (!test_bit(HCI_UART_RESET_ON_INIT
, &hu
->hdev_flags
))
665 set_bit(HCI_QUIRK_RESET_ON_CLOSE
, &hdev
->quirks
);
667 if (test_bit(HCI_UART_CREATE_AMP
, &hu
->hdev_flags
))
668 hdev
->dev_type
= HCI_AMP
;
670 hdev
->dev_type
= HCI_PRIMARY
;
672 /* Only call open() for the protocol after hdev is fully initialized as
673 * open() (or a timer/workqueue it starts) may attempt to reference it.
675 err
= hu
->proto
->open(hu
);
682 if (test_bit(HCI_UART_INIT_PENDING
, &hu
->hdev_flags
))
685 if (hci_register_dev(hdev
) < 0) {
686 BT_ERR("Can't register HCI device");
687 hu
->proto
->close(hu
);
693 set_bit(HCI_UART_REGISTERED
, &hu
->flags
);
698 static int hci_uart_set_proto(struct hci_uart
*hu
, int id
)
700 const struct hci_uart_proto
*p
;
703 p
= hci_uart_get_proto(id
);
705 return -EPROTONOSUPPORT
;
709 err
= hci_uart_register_dev(hu
);
714 set_bit(HCI_UART_PROTO_READY
, &hu
->flags
);
718 static int hci_uart_set_flags(struct hci_uart
*hu
, unsigned long flags
)
720 unsigned long valid_flags
= BIT(HCI_UART_RAW_DEVICE
) |
721 BIT(HCI_UART_RESET_ON_INIT
) |
722 BIT(HCI_UART_CREATE_AMP
) |
723 BIT(HCI_UART_INIT_PENDING
) |
724 BIT(HCI_UART_EXT_CONFIG
) |
725 BIT(HCI_UART_VND_DETECT
);
727 if (flags
& ~valid_flags
)
730 hu
->hdev_flags
= flags
;
735 /* hci_uart_tty_ioctl()
737 * Process IOCTL system call for the tty device.
741 * tty pointer to tty instance data
742 * file pointer to open file object for device
743 * cmd IOCTL command code
744 * arg argument for IOCTL call (cmd dependent)
746 * Return Value: Command dependent
748 static int hci_uart_tty_ioctl(struct tty_struct
*tty
, struct file
*file
,
749 unsigned int cmd
, unsigned long arg
)
751 struct hci_uart
*hu
= tty
->disc_data
;
756 /* Verify the status of the device */
761 case HCIUARTSETPROTO
:
762 if (!test_and_set_bit(HCI_UART_PROTO_SET
, &hu
->flags
)) {
763 err
= hci_uart_set_proto(hu
, arg
);
765 clear_bit(HCI_UART_PROTO_SET
, &hu
->flags
);
770 case HCIUARTGETPROTO
:
771 if (test_bit(HCI_UART_PROTO_SET
, &hu
->flags
))
777 case HCIUARTGETDEVICE
:
778 if (test_bit(HCI_UART_REGISTERED
, &hu
->flags
))
784 case HCIUARTSETFLAGS
:
785 if (test_bit(HCI_UART_PROTO_SET
, &hu
->flags
))
788 err
= hci_uart_set_flags(hu
, arg
);
791 case HCIUARTGETFLAGS
:
792 err
= hu
->hdev_flags
;
796 err
= n_tty_ioctl_helper(tty
, file
, cmd
, arg
);
804 * We don't provide read/write/poll interface for user space.
806 static ssize_t
hci_uart_tty_read(struct tty_struct
*tty
, struct file
*file
,
807 unsigned char __user
*buf
, size_t nr
)
812 static ssize_t
hci_uart_tty_write(struct tty_struct
*tty
, struct file
*file
,
813 const unsigned char *data
, size_t count
)
818 static __poll_t
hci_uart_tty_poll(struct tty_struct
*tty
,
819 struct file
*filp
, poll_table
*wait
)
824 static int __init
hci_uart_init(void)
826 static struct tty_ldisc_ops hci_uart_ldisc
;
829 BT_INFO("HCI UART driver ver %s", VERSION
);
831 /* Register the tty discipline */
833 memset(&hci_uart_ldisc
, 0, sizeof(hci_uart_ldisc
));
834 hci_uart_ldisc
.magic
= TTY_LDISC_MAGIC
;
835 hci_uart_ldisc
.name
= "n_hci";
836 hci_uart_ldisc
.open
= hci_uart_tty_open
;
837 hci_uart_ldisc
.close
= hci_uart_tty_close
;
838 hci_uart_ldisc
.read
= hci_uart_tty_read
;
839 hci_uart_ldisc
.write
= hci_uart_tty_write
;
840 hci_uart_ldisc
.ioctl
= hci_uart_tty_ioctl
;
841 hci_uart_ldisc
.compat_ioctl
= hci_uart_tty_ioctl
;
842 hci_uart_ldisc
.poll
= hci_uart_tty_poll
;
843 hci_uart_ldisc
.receive_buf
= hci_uart_tty_receive
;
844 hci_uart_ldisc
.write_wakeup
= hci_uart_tty_wakeup
;
845 hci_uart_ldisc
.owner
= THIS_MODULE
;
847 err
= tty_register_ldisc(N_HCI
, &hci_uart_ldisc
);
849 BT_ERR("HCI line discipline registration failed. (%d)", err
);
853 #ifdef CONFIG_BT_HCIUART_H4
856 #ifdef CONFIG_BT_HCIUART_BCSP
859 #ifdef CONFIG_BT_HCIUART_LL
862 #ifdef CONFIG_BT_HCIUART_ATH3K
865 #ifdef CONFIG_BT_HCIUART_3WIRE
868 #ifdef CONFIG_BT_HCIUART_INTEL
871 #ifdef CONFIG_BT_HCIUART_BCM
874 #ifdef CONFIG_BT_HCIUART_QCA
877 #ifdef CONFIG_BT_HCIUART_AG6XX
880 #ifdef CONFIG_BT_HCIUART_MRVL
887 static void __exit
hci_uart_exit(void)
891 #ifdef CONFIG_BT_HCIUART_H4
894 #ifdef CONFIG_BT_HCIUART_BCSP
897 #ifdef CONFIG_BT_HCIUART_LL
900 #ifdef CONFIG_BT_HCIUART_ATH3K
903 #ifdef CONFIG_BT_HCIUART_3WIRE
906 #ifdef CONFIG_BT_HCIUART_INTEL
909 #ifdef CONFIG_BT_HCIUART_BCM
912 #ifdef CONFIG_BT_HCIUART_QCA
915 #ifdef CONFIG_BT_HCIUART_AG6XX
918 #ifdef CONFIG_BT_HCIUART_MRVL
922 /* Release tty registration of line discipline */
923 err
= tty_unregister_ldisc(N_HCI
);
925 BT_ERR("Can't unregister HCI line discipline (%d)", err
);
928 module_init(hci_uart_init
);
929 module_exit(hci_uart_exit
);
931 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
932 MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION
);
933 MODULE_VERSION(VERSION
);
934 MODULE_LICENSE("GPL");
935 MODULE_ALIAS_LDISC(N_HCI
);