arm: tegra: fb: Apply new mode even if its current
[linux-2.6.git] / drivers / bluetooth / bfusb.c
1 /*
2  *
3  *  AVM BlueFRITZ! USB driver
4  *
5  *  Copyright (C) 2003-2006  Marcel Holtmann <marcel@holtmann.org>
6  *
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; either version 2 of the License, or
11  *  (at your option) any later version.
12  *
13  *  This program is distributed in the hope that it will be useful,
14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *  GNU General Public License for more details.
17  *
18  *  You should have received a copy of the GNU General Public License
19  *  along with this program; if not, write to the Free Software
20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21  *
22  */
23
24 #include <linux/module.h>
25
26 #include <linux/kernel.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/types.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/device.h>
34 #include <linux/firmware.h>
35
36 #include <linux/usb.h>
37
38 #include <net/bluetooth/bluetooth.h>
39 #include <net/bluetooth/hci_core.h>
40
41 #define VERSION "1.2"
42
43 static struct usb_driver bfusb_driver;
44
45 static struct usb_device_id bfusb_table[] = {
46         /* AVM BlueFRITZ! USB */
47         { USB_DEVICE(0x057c, 0x2200) },
48
49         { }     /* Terminating entry */
50 };
51
52 MODULE_DEVICE_TABLE(usb, bfusb_table);
53
54 #define BFUSB_MAX_BLOCK_SIZE    256
55
56 #define BFUSB_BLOCK_TIMEOUT     3000
57
58 #define BFUSB_TX_PROCESS        1
59 #define BFUSB_TX_WAKEUP         2
60
61 #define BFUSB_MAX_BULK_TX       2
62 #define BFUSB_MAX_BULK_RX       2
63
64 struct bfusb_data {
65         struct hci_dev          *hdev;
66
67         unsigned long           state;
68
69         struct usb_device       *udev;
70
71         unsigned int            bulk_in_ep;
72         unsigned int            bulk_out_ep;
73         unsigned int            bulk_pkt_size;
74
75         rwlock_t                lock;
76
77         struct sk_buff_head     transmit_q;
78
79         struct sk_buff          *reassembly;
80
81         atomic_t                pending_tx;
82         struct sk_buff_head     pending_q;
83         struct sk_buff_head     completed_q;
84 };
85
86 struct bfusb_data_scb {
87         struct urb *urb;
88 };
89
90 static void bfusb_tx_complete(struct urb *urb);
91 static void bfusb_rx_complete(struct urb *urb);
92
93 static struct urb *bfusb_get_completed(struct bfusb_data *data)
94 {
95         struct sk_buff *skb;
96         struct urb *urb = NULL;
97
98         BT_DBG("bfusb %p", data);
99
100         skb = skb_dequeue(&data->completed_q);
101         if (skb) {
102                 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
103                 kfree_skb(skb);
104         }
105
106         return urb;
107 }
108
109 static void bfusb_unlink_urbs(struct bfusb_data *data)
110 {
111         struct sk_buff *skb;
112         struct urb *urb;
113
114         BT_DBG("bfusb %p", data);
115
116         while ((skb = skb_dequeue(&data->pending_q))) {
117                 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
118                 usb_kill_urb(urb);
119                 skb_queue_tail(&data->completed_q, skb);
120         }
121
122         while ((urb = bfusb_get_completed(data)))
123                 usb_free_urb(urb);
124 }
125
126 static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
127 {
128         struct bfusb_data_scb *scb = (void *) skb->cb;
129         struct urb *urb = bfusb_get_completed(data);
130         int err, pipe;
131
132         BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
133
134         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
135                 return -ENOMEM;
136
137         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
138
139         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
140                         bfusb_tx_complete, skb);
141
142         scb->urb = urb;
143
144         skb_queue_tail(&data->pending_q, skb);
145
146         err = usb_submit_urb(urb, GFP_ATOMIC);
147         if (err) {
148                 BT_ERR("%s bulk tx submit failed urb %p err %d", 
149                                         data->hdev->name, urb, err);
150                 skb_unlink(skb, &data->pending_q);
151                 usb_free_urb(urb);
152         } else
153                 atomic_inc(&data->pending_tx);
154
155         return err;
156 }
157
158 static void bfusb_tx_wakeup(struct bfusb_data *data)
159 {
160         struct sk_buff *skb;
161
162         BT_DBG("bfusb %p", data);
163
164         if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
165                 set_bit(BFUSB_TX_WAKEUP, &data->state);
166                 return;
167         }
168
169         do {
170                 clear_bit(BFUSB_TX_WAKEUP, &data->state);
171
172                 while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
173                                 (skb = skb_dequeue(&data->transmit_q))) {
174                         if (bfusb_send_bulk(data, skb) < 0) {
175                                 skb_queue_head(&data->transmit_q, skb);
176                                 break;
177                         }
178                 }
179
180         } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
181
182         clear_bit(BFUSB_TX_PROCESS, &data->state);
183 }
184
185 static void bfusb_tx_complete(struct urb *urb)
186 {
187         struct sk_buff *skb = (struct sk_buff *) urb->context;
188         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
189
190         BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
191
192         atomic_dec(&data->pending_tx);
193
194         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
195                 return;
196
197         if (!urb->status)
198                 data->hdev->stat.byte_tx += skb->len;
199         else
200                 data->hdev->stat.err_tx++;
201
202         read_lock(&data->lock);
203
204         skb_unlink(skb, &data->pending_q);
205         skb_queue_tail(&data->completed_q, skb);
206
207         bfusb_tx_wakeup(data);
208
209         read_unlock(&data->lock);
210 }
211
212
213 static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
214 {
215         struct bfusb_data_scb *scb;
216         struct sk_buff *skb;
217         int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
218
219         BT_DBG("bfusb %p urb %p", data, urb);
220
221         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
222                 return -ENOMEM;
223
224         skb = bt_skb_alloc(size, GFP_ATOMIC);
225         if (!skb) {
226                 usb_free_urb(urb);
227                 return -ENOMEM;
228         }
229
230         skb->dev = (void *) data;
231
232         scb = (struct bfusb_data_scb *) skb->cb;
233         scb->urb = urb;
234
235         pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
236
237         usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
238                         bfusb_rx_complete, skb);
239
240         skb_queue_tail(&data->pending_q, skb);
241
242         err = usb_submit_urb(urb, GFP_ATOMIC);
243         if (err) {
244                 BT_ERR("%s bulk rx submit failed urb %p err %d",
245                                         data->hdev->name, urb, err);
246                 skb_unlink(skb, &data->pending_q);
247                 kfree_skb(skb);
248                 usb_free_urb(urb);
249         }
250
251         return err;
252 }
253
254 static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
255 {
256         BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
257
258         if (hdr & 0x10) {
259                 BT_ERR("%s error in block", data->hdev->name);
260                 kfree_skb(data->reassembly);
261                 data->reassembly = NULL;
262                 return -EIO;
263         }
264
265         if (hdr & 0x04) {
266                 struct sk_buff *skb;
267                 unsigned char pkt_type;
268                 int pkt_len = 0;
269
270                 if (data->reassembly) {
271                         BT_ERR("%s unexpected start block", data->hdev->name);
272                         kfree_skb(data->reassembly);
273                         data->reassembly = NULL;
274                 }
275
276                 if (len < 1) {
277                         BT_ERR("%s no packet type found", data->hdev->name);
278                         return -EPROTO;
279                 }
280
281                 pkt_type = *buf++; len--;
282
283                 switch (pkt_type) {
284                 case HCI_EVENT_PKT:
285                         if (len >= HCI_EVENT_HDR_SIZE) {
286                                 struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
287                                 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
288                         } else {
289                                 BT_ERR("%s event block is too short", data->hdev->name);
290                                 return -EILSEQ;
291                         }
292                         break;
293
294                 case HCI_ACLDATA_PKT:
295                         if (len >= HCI_ACL_HDR_SIZE) {
296                                 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
297                                 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
298                         } else {
299                                 BT_ERR("%s data block is too short", data->hdev->name);
300                                 return -EILSEQ;
301                         }
302                         break;
303
304                 case HCI_SCODATA_PKT:
305                         if (len >= HCI_SCO_HDR_SIZE) {
306                                 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
307                                 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
308                         } else {
309                                 BT_ERR("%s audio block is too short", data->hdev->name);
310                                 return -EILSEQ;
311                         }
312                         break;
313                 }
314
315                 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
316                 if (!skb) {
317                         BT_ERR("%s no memory for the packet", data->hdev->name);
318                         return -ENOMEM;
319                 }
320
321                 skb->dev = (void *) data->hdev;
322                 bt_cb(skb)->pkt_type = pkt_type;
323
324                 data->reassembly = skb;
325         } else {
326                 if (!data->reassembly) {
327                         BT_ERR("%s unexpected continuation block", data->hdev->name);
328                         return -EIO;
329                 }
330         }
331
332         if (len > 0)
333                 memcpy(skb_put(data->reassembly, len), buf, len);
334
335         if (hdr & 0x08) {
336                 hci_recv_frame(data->reassembly);
337                 data->reassembly = NULL;
338         }
339
340         return 0;
341 }
342
343 static void bfusb_rx_complete(struct urb *urb)
344 {
345         struct sk_buff *skb = (struct sk_buff *) urb->context;
346         struct bfusb_data *data = (struct bfusb_data *) skb->dev;
347         unsigned char *buf = urb->transfer_buffer;
348         int count = urb->actual_length;
349         int err, hdr, len;
350
351         BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
352
353         read_lock(&data->lock);
354
355         if (!test_bit(HCI_RUNNING, &data->hdev->flags))
356                 goto unlock;
357
358         if (urb->status || !count)
359                 goto resubmit;
360
361         data->hdev->stat.byte_rx += count;
362
363         skb_put(skb, count);
364
365         while (count) {
366                 hdr = buf[0] | (buf[1] << 8);
367
368                 if (hdr & 0x4000) {
369                         len = 0;
370                         count -= 2;
371                         buf   += 2;
372                 } else {
373                         len = (buf[2] == 0) ? 256 : buf[2];
374                         count -= 3;
375                         buf   += 3;
376                 }
377
378                 if (count < len) {
379                         BT_ERR("%s block extends over URB buffer ranges",
380                                         data->hdev->name);
381                 }
382
383                 if ((hdr & 0xe1) == 0xc1)
384                         bfusb_recv_block(data, hdr, buf, len);
385
386                 count -= len;
387                 buf   += len;
388         }
389
390         skb_unlink(skb, &data->pending_q);
391         kfree_skb(skb);
392
393         bfusb_rx_submit(data, urb);
394
395         read_unlock(&data->lock);
396
397         return;
398
399 resubmit:
400         urb->dev = data->udev;
401
402         err = usb_submit_urb(urb, GFP_ATOMIC);
403         if (err) {
404                 BT_ERR("%s bulk resubmit failed urb %p err %d",
405                                         data->hdev->name, urb, err);
406         }
407
408 unlock:
409         read_unlock(&data->lock);
410 }
411
412 static int bfusb_open(struct hci_dev *hdev)
413 {
414         struct bfusb_data *data = hdev->driver_data;
415         unsigned long flags;
416         int i, err;
417
418         BT_DBG("hdev %p bfusb %p", hdev, data);
419
420         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
421                 return 0;
422
423         write_lock_irqsave(&data->lock, flags);
424
425         err = bfusb_rx_submit(data, NULL);
426         if (!err) {
427                 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
428                         bfusb_rx_submit(data, NULL);
429         } else {
430                 clear_bit(HCI_RUNNING, &hdev->flags);
431         }
432
433         write_unlock_irqrestore(&data->lock, flags);
434
435         return err;
436 }
437
438 static int bfusb_flush(struct hci_dev *hdev)
439 {
440         struct bfusb_data *data = hdev->driver_data;
441
442         BT_DBG("hdev %p bfusb %p", hdev, data);
443
444         skb_queue_purge(&data->transmit_q);
445
446         return 0;
447 }
448
449 static int bfusb_close(struct hci_dev *hdev)
450 {
451         struct bfusb_data *data = hdev->driver_data;
452         unsigned long flags;
453
454         BT_DBG("hdev %p bfusb %p", hdev, data);
455
456         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
457                 return 0;
458
459         write_lock_irqsave(&data->lock, flags);
460         write_unlock_irqrestore(&data->lock, flags);
461
462         bfusb_unlink_urbs(data);
463         bfusb_flush(hdev);
464
465         return 0;
466 }
467
468 static int bfusb_send_frame(struct sk_buff *skb)
469 {
470         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
471         struct bfusb_data *data;
472         struct sk_buff *nskb;
473         unsigned char buf[3];
474         int sent = 0, size, count;
475
476         BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
477
478         if (!hdev) {
479                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
480                 return -ENODEV;
481         }
482
483         if (!test_bit(HCI_RUNNING, &hdev->flags))
484                 return -EBUSY;
485
486         data = hdev->driver_data;
487
488         switch (bt_cb(skb)->pkt_type) {
489         case HCI_COMMAND_PKT:
490                 hdev->stat.cmd_tx++;
491                 break;
492         case HCI_ACLDATA_PKT:
493                 hdev->stat.acl_tx++;
494                 break;
495         case HCI_SCODATA_PKT:
496                 hdev->stat.sco_tx++;
497                 break;
498         };
499
500         /* Prepend skb with frame type */
501         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
502
503         count = skb->len;
504
505         /* Max HCI frame size seems to be 1511 + 1 */
506         nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
507         if (!nskb) {
508                 BT_ERR("Can't allocate memory for new packet");
509                 return -ENOMEM;
510         }
511
512         nskb->dev = (void *) data;
513
514         while (count) {
515                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
516
517                 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
518                 buf[1] = 0x00;
519                 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
520
521                 memcpy(skb_put(nskb, 3), buf, 3);
522                 skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
523
524                 sent  += size;
525                 count -= size;
526         }
527
528         /* Don't send frame with multiple size of bulk max packet */
529         if ((nskb->len % data->bulk_pkt_size) == 0) {
530                 buf[0] = 0xdd;
531                 buf[1] = 0x00;
532                 memcpy(skb_put(nskb, 2), buf, 2);
533         }
534
535         read_lock(&data->lock);
536
537         skb_queue_tail(&data->transmit_q, nskb);
538         bfusb_tx_wakeup(data);
539
540         read_unlock(&data->lock);
541
542         kfree_skb(skb);
543
544         return 0;
545 }
546
547 static void bfusb_destruct(struct hci_dev *hdev)
548 {
549         struct bfusb_data *data = hdev->driver_data;
550
551         BT_DBG("hdev %p bfusb %p", hdev, data);
552
553         kfree(data);
554 }
555
556 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
557 {
558         return -ENOIOCTLCMD;
559 }
560
561 static int bfusb_load_firmware(struct bfusb_data *data,
562                                const unsigned char *firmware, int count)
563 {
564         unsigned char *buf;
565         int err, pipe, len, size, sent = 0;
566
567         BT_DBG("bfusb %p udev %p", data, data->udev);
568
569         BT_INFO("BlueFRITZ! USB loading firmware");
570
571         pipe = usb_sndctrlpipe(data->udev, 0);
572
573         if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
574                                 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
575                 BT_ERR("Can't change to loading configuration");
576                 return -EBUSY;
577         }
578
579         data->udev->toggle[0] = data->udev->toggle[1] = 0;
580
581         buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
582         if (!buf) {
583                 BT_ERR("Can't allocate memory chunk for firmware");
584                 return -ENOMEM;
585         }
586
587         pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
588
589         while (count) {
590                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
591
592                 memcpy(buf, firmware + sent, size);
593
594                 err = usb_bulk_msg(data->udev, pipe, buf, size,
595                                         &len, BFUSB_BLOCK_TIMEOUT);
596
597                 if (err || (len != size)) {
598                         BT_ERR("Error in firmware loading");
599                         goto error;
600                 }
601
602                 sent  += size;
603                 count -= size;
604         }
605
606         err = usb_bulk_msg(data->udev, pipe, NULL, 0,
607                                         &len, BFUSB_BLOCK_TIMEOUT);
608         if (err < 0) {
609                 BT_ERR("Error in null packet request");
610                 goto error;
611         }
612
613         pipe = usb_sndctrlpipe(data->udev, 0);
614
615         err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
616                                 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
617         if (err < 0) {
618                 BT_ERR("Can't change to running configuration");
619                 goto error;
620         }
621
622         data->udev->toggle[0] = data->udev->toggle[1] = 0;
623
624         BT_INFO("BlueFRITZ! USB device ready");
625
626         kfree(buf);
627         return 0;
628
629 error:
630         kfree(buf);
631
632         pipe = usb_sndctrlpipe(data->udev, 0);
633
634         usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
635                                 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
636
637         return err;
638 }
639
640 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
641 {
642         const struct firmware *firmware;
643         struct usb_device *udev = interface_to_usbdev(intf);
644         struct usb_host_endpoint *bulk_out_ep;
645         struct usb_host_endpoint *bulk_in_ep;
646         struct hci_dev *hdev;
647         struct bfusb_data *data;
648
649         BT_DBG("intf %p id %p", intf, id);
650
651         /* Check number of endpoints */
652         if (intf->cur_altsetting->desc.bNumEndpoints < 2)
653                 return -EIO;
654
655         bulk_out_ep = &intf->cur_altsetting->endpoint[0];
656         bulk_in_ep  = &intf->cur_altsetting->endpoint[1];
657
658         if (!bulk_out_ep || !bulk_in_ep) {
659                 BT_ERR("Bulk endpoints not found");
660                 goto done;
661         }
662
663         /* Initialize control structure and load firmware */
664         data = kzalloc(sizeof(struct bfusb_data), GFP_KERNEL);
665         if (!data) {
666                 BT_ERR("Can't allocate memory for control structure");
667                 goto done;
668         }
669
670         data->udev = udev;
671         data->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
672         data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
673         data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
674
675         rwlock_init(&data->lock);
676
677         data->reassembly = NULL;
678
679         skb_queue_head_init(&data->transmit_q);
680         skb_queue_head_init(&data->pending_q);
681         skb_queue_head_init(&data->completed_q);
682
683         if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
684                 BT_ERR("Firmware request failed");
685                 goto error;
686         }
687
688         BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
689
690         if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
691                 BT_ERR("Firmware loading failed");
692                 goto release;
693         }
694
695         release_firmware(firmware);
696
697         /* Initialize and register HCI device */
698         hdev = hci_alloc_dev();
699         if (!hdev) {
700                 BT_ERR("Can't allocate HCI device");
701                 goto error;
702         }
703
704         data->hdev = hdev;
705
706         hdev->bus = HCI_USB;
707         hdev->driver_data = data;
708         SET_HCIDEV_DEV(hdev, &intf->dev);
709
710         hdev->open     = bfusb_open;
711         hdev->close    = bfusb_close;
712         hdev->flush    = bfusb_flush;
713         hdev->send     = bfusb_send_frame;
714         hdev->destruct = bfusb_destruct;
715         hdev->ioctl    = bfusb_ioctl;
716
717         hdev->owner = THIS_MODULE;
718
719         if (hci_register_dev(hdev) < 0) {
720                 BT_ERR("Can't register HCI device");
721                 hci_free_dev(hdev);
722                 goto error;
723         }
724
725         usb_set_intfdata(intf, data);
726
727         return 0;
728
729 release:
730         release_firmware(firmware);
731
732 error:
733         kfree(data);
734
735 done:
736         return -EIO;
737 }
738
739 static void bfusb_disconnect(struct usb_interface *intf)
740 {
741         struct bfusb_data *data = usb_get_intfdata(intf);
742         struct hci_dev *hdev = data->hdev;
743
744         BT_DBG("intf %p", intf);
745
746         if (!hdev)
747                 return;
748
749         usb_set_intfdata(intf, NULL);
750
751         bfusb_close(hdev);
752
753         if (hci_unregister_dev(hdev) < 0)
754                 BT_ERR("Can't unregister HCI device %s", hdev->name);
755
756         hci_free_dev(hdev);
757 }
758
759 static struct usb_driver bfusb_driver = {
760         .name           = "bfusb",
761         .probe          = bfusb_probe,
762         .disconnect     = bfusb_disconnect,
763         .id_table       = bfusb_table,
764 };
765
766 static int __init bfusb_init(void)
767 {
768         int err;
769
770         BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
771
772         err = usb_register(&bfusb_driver);
773         if (err < 0)
774                 BT_ERR("Failed to register BlueFRITZ! USB driver");
775
776         return err;
777 }
778
779 static void __exit bfusb_exit(void)
780 {
781         usb_deregister(&bfusb_driver);
782 }
783
784 module_init(bfusb_init);
785 module_exit(bfusb_exit);
786
787 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
788 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
789 MODULE_VERSION(VERSION);
790 MODULE_LICENSE("GPL");
791 MODULE_FIRMWARE("bfubase.frm");