1 /*
2 *
3 * AVM BlueFRITZ! USB driver
4 *
5 * Copyright (C) 2003 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/config.h>
25 #include <linux/module.h>
26
27 #include <linux/kernel.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <linux/types.h>
31 #include <linux/sched.h>
32 #include <linux/errno.h>
33 #include <linux/skbuff.h>
34
35 #include <linux/device.h>
36 #include <linux/firmware.h>
37
38 #include <linux/usb.h>
39
40 #include <net/bluetooth/bluetooth.h>
41 #include <net/bluetooth/hci_core.h>
42
43 #ifndef CONFIG_BT_HCIBFUSB_DEBUG
44 #undef BT_DBG
45 #define BT_DBG(D...)
46 #endif
47
48 #define VERSION "1.1"
49
50 static int ignore = 0;
51
52 static struct usb_driver bfusb_driver;
53
54 static struct usb_device_id bfusb_table[] = {
55 /* AVM BlueFRITZ! USB */
56 { USB_DEVICE(0x057c, 0x2200) },
57
58 { } /* Terminating entry */
59 };
60
61 MODULE_DEVICE_TABLE(usb, bfusb_table);
62
63
64 #define BFUSB_MAX_BLOCK_SIZE 256
65
66 #define BFUSB_BLOCK_TIMEOUT (HZ * 3)
67
68 #define BFUSB_TX_PROCESS 1
69 #define BFUSB_TX_WAKEUP 2
70
71 #define BFUSB_MAX_BULK_TX 2
72 #define BFUSB_MAX_BULK_RX 2
73
74 struct bfusb {
75 struct hci_dev *hdev;
76
77 unsigned long state;
78
79 struct usb_device *udev;
80
81 unsigned int bulk_in_ep;
82 unsigned int bulk_out_ep;
83 unsigned int bulk_pkt_size;
84
85 rwlock_t lock;
86
87 struct sk_buff_head transmit_q;
88
89 struct sk_buff *reassembly;
90
91 atomic_t pending_tx;
92 struct sk_buff_head pending_q;
93 struct sk_buff_head completed_q;
94 };
95
96 struct bfusb_scb {
97 struct urb *urb;
98 };
99
100 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs);
101 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs);
102
103 static struct urb *bfusb_get_completed(struct bfusb *bfusb)
104 {
105 struct sk_buff *skb;
106 struct urb *urb = NULL;
107
108 BT_DBG("bfusb %p", bfusb);
109
110 skb = skb_dequeue(&bfusb->completed_q);
111 if (skb) {
112 urb = ((struct bfusb_scb *) skb->cb)->urb;
113 kfree_skb(skb);
114 }
115
116 return urb;
117 }
118
119 static void bfusb_unlink_urbs(struct bfusb *bfusb)
120 {
121 struct sk_buff *skb;
122 struct urb *urb;
123
124 BT_DBG("bfusb %p", bfusb);
125
126 while ((skb = skb_dequeue(&bfusb->pending_q))) {
127 urb = ((struct bfusb_scb *) skb->cb)->urb;
128 usb_kill_urb(urb);
129 skb_queue_tail(&bfusb->completed_q, skb);
130 }
131
132 while ((urb = bfusb_get_completed(bfusb)))
133 usb_free_urb(urb);
134 }
135
136
137 static int bfusb_send_bulk(struct bfusb *bfusb, struct sk_buff *skb)
138 {
139 struct bfusb_scb *scb = (void *) skb->cb;
140 struct urb *urb = bfusb_get_completed(bfusb);
141 int err, pipe;
142
143 BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len);
144
145 if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
146 return -ENOMEM;
147
148 pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
149
150 usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, skb->len,
151 bfusb_tx_complete, skb);
152
153 scb->urb = urb;
154
155 skb_queue_tail(&bfusb->pending_q, skb);
156
157 err = usb_submit_urb(urb, GFP_ATOMIC);
158 if (err) {
159 BT_ERR("%s bulk tx submit failed urb %p err %d",
160 bfusb->hdev->name, urb, err);
161 skb_unlink(skb);
162 usb_free_urb(urb);
163 } else
164 atomic_inc(&bfusb->pending_tx);
165
166 return err;
167 }
168
169 static void bfusb_tx_wakeup(struct bfusb *bfusb)
170 {
171 struct sk_buff *skb;
172
173 BT_DBG("bfusb %p", bfusb);
174
175 if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) {
176 set_bit(BFUSB_TX_WAKEUP, &bfusb->state);
177 return;
178 }
179
180 do {
181 clear_bit(BFUSB_TX_WAKEUP, &bfusb->state);
182
183 while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) &&
184 (skb = skb_dequeue(&bfusb->transmit_q))) {
185 if (bfusb_send_bulk(bfusb, skb) < 0) {
186 skb_queue_head(&bfusb->transmit_q, skb);
187 break;
188 }
189 }
190
191 } while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state));
192
193 clear_bit(BFUSB_TX_PROCESS, &bfusb->state);
194 }
195
196 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs)
197 {
198 struct sk_buff *skb = (struct sk_buff *) urb->context;
199 struct bfusb *bfusb = (struct bfusb *) skb->dev;
200
201 BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
202
203 atomic_dec(&bfusb->pending_tx);
204
205 if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
206 return;
207
208 if (!urb->status)
209 bfusb->hdev->stat.byte_tx += skb->len;
210 else
211 bfusb->hdev->stat.err_tx++;
212
213 read_lock(&bfusb->lock);
214
215 skb_unlink(skb);
216 skb_queue_tail(&bfusb->completed_q, skb);
217
218 bfusb_tx_wakeup(bfusb);
219
220 read_unlock(&bfusb->lock);
221 }
222
223
224 static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb)
225 {
226 struct bfusb_scb *scb;
227 struct sk_buff *skb;
228 int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
229
230 BT_DBG("bfusb %p urb %p", bfusb, urb);
231
232 if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
233 return -ENOMEM;
234
235 if (!(skb = bt_skb_alloc(size, GFP_ATOMIC))) {
236 usb_free_urb(urb);
237 return -ENOMEM;
238 }
239
240 skb->dev = (void *) bfusb;
241
242 scb = (struct bfusb_scb *) skb->cb;
243 scb->urb = urb;
244
245 pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep);
246
247 usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, size,
248 bfusb_rx_complete, skb);
249
250 skb_queue_tail(&bfusb->pending_q, skb);
251
252 err = usb_submit_urb(urb, GFP_ATOMIC);
253 if (err) {
254 BT_ERR("%s bulk rx submit failed urb %p err %d",
255 bfusb->hdev->name, urb, err);
256 skb_unlink(skb);
257 kfree_skb(skb);
258 usb_free_urb(urb);
259 }
260
261 return err;
262 }
263
264 static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *data, int len)
265 {
266 BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len);
267
268 if (hdr & 0x10) {
269 BT_ERR("%s error in block", bfusb->hdev->name);
270 if (bfusb->reassembly)
271 kfree_skb(bfusb->reassembly);
272 bfusb->reassembly = NULL;
273 return -EIO;
274 }
275
276 if (hdr & 0x04) {
277 struct sk_buff *skb;
278 unsigned char pkt_type;
279 int pkt_len = 0;
280
281 if (bfusb->reassembly) {
282 BT_ERR("%s unexpected start block", bfusb->hdev->name);
283 kfree_skb(bfusb->reassembly);
284 bfusb->reassembly = NULL;
285 }
286
287 if (len < 1) {
288 BT_ERR("%s no packet type found", bfusb->hdev->name);
289 return -EPROTO;
290 }
291
292 pkt_type = *data++; len--;
293
294 switch (pkt_type) {
295 case HCI_EVENT_PKT:
296 if (len >= HCI_EVENT_HDR_SIZE) {
297 struct hci_event_hdr *hdr = (struct hci_event_hdr *) data;
298 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
299 } else {
300 BT_ERR("%s event block is too short", bfusb->hdev->name);
301 return -EILSEQ;
302 }
303 break;
304
305 case HCI_ACLDATA_PKT:
306 if (len >= HCI_ACL_HDR_SIZE) {
307 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) data;
308 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
309 } else {
310 BT_ERR("%s data block is too short", bfusb->hdev->name);
311 return -EILSEQ;
312 }
313 break;
314
315 case HCI_SCODATA_PKT:
316 if (len >= HCI_SCO_HDR_SIZE) {
317 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) data;
318 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
319 } else {
320 BT_ERR("%s audio block is too short", bfusb->hdev->name);
321 return -EILSEQ;
322 }
323 break;
324 }
325
326 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
327 if (!skb) {
328 BT_ERR("%s no memory for the packet", bfusb->hdev->name);
329 return -ENOMEM;
330 }
331
332 skb->dev = (void *) bfusb->hdev;
333 skb->pkt_type = pkt_type;
334
335 bfusb->reassembly = skb;
336 } else {
337 if (!bfusb->reassembly) {
338 BT_ERR("%s unexpected continuation block", bfusb->hdev->name);
339 return -EIO;
340 }
341 }
342
343 if (len > 0)
344 memcpy(skb_put(bfusb->reassembly, len), data, len);
345
346 if (hdr & 0x08) {
347 hci_recv_frame(bfusb->reassembly);
348 bfusb->reassembly = NULL;
349 }
350
351 return 0;
352 }
353
354 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs)
355 {
356 struct sk_buff *skb = (struct sk_buff *) urb->context;
357 struct bfusb *bfusb = (struct bfusb *) skb->dev;
358 unsigned char *buf = urb->transfer_buffer;
359 int count = urb->actual_length;
360 int err, hdr, len;
361
362 BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
363
364 read_lock(&bfusb->lock);
365
366 if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
367 goto unlock;
368
369 if (urb->status || !count)
370 goto resubmit;
371
372 bfusb->hdev->stat.byte_rx += count;
373
374 skb_put(skb, count);
375
376 while (count) {
377 hdr = buf[0] | (buf[1] << 8);
378
379 if (hdr & 0x4000) {
380 len = 0;
381 count -= 2;
382 buf += 2;
383 } else {
384 len = (buf[2] == 0) ? 256 : buf[2];
385 count -= 3;
386 buf += 3;
387 }
388
389 if (count < len) {
390 BT_ERR("%s block extends over URB buffer ranges",
391 bfusb->hdev->name);
392 }
393
394 if ((hdr & 0xe1) == 0xc1)
395 bfusb_recv_block(bfusb, hdr, buf, len);
396
397 count -= len;
398 buf += len;
399 }
400
401 skb_unlink(skb);
402 kfree_skb(skb);
403
404 bfusb_rx_submit(bfusb, urb);
405
406 read_unlock(&bfusb->lock);
407
408 return;
409
410 resubmit:
411 urb->dev = bfusb->udev;
412
413 err = usb_submit_urb(urb, GFP_ATOMIC);
414 if (err) {
415 BT_ERR("%s bulk resubmit failed urb %p err %d",
416 bfusb->hdev->name, urb, err);
417 }
418
419 unlock:
420 read_unlock(&bfusb->lock);
421 }
422
423
424 static int bfusb_open(struct hci_dev *hdev)
425 {
426 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
427 unsigned long flags;
428 int i, err;
429
430 BT_DBG("hdev %p bfusb %p", hdev, bfusb);
431
432 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
433 return 0;
434
435 write_lock_irqsave(&bfusb->lock, flags);
436
437 err = bfusb_rx_submit(bfusb, NULL);
438 if (!err) {
439 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
440 bfusb_rx_submit(bfusb, NULL);
441 } else {
442 clear_bit(HCI_RUNNING, &hdev->flags);
443 }
444
445 write_unlock_irqrestore(&bfusb->lock, flags);
446
447 return err;
448 }
449
450 static int bfusb_flush(struct hci_dev *hdev)
451 {
452 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
453
454 BT_DBG("hdev %p bfusb %p", hdev, bfusb);
455
456 skb_queue_purge(&bfusb->transmit_q);
457
458 return 0;
459 }
460
461 static int bfusb_close(struct hci_dev *hdev)
462 {
463 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
464 unsigned long flags;
465
466 BT_DBG("hdev %p bfusb %p", hdev, bfusb);
467
468 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
469 return 0;
470
471 write_lock_irqsave(&bfusb->lock, flags);
472 write_unlock_irqrestore(&bfusb->lock, flags);
473
474 bfusb_unlink_urbs(bfusb);
475 bfusb_flush(hdev);
476
477 return 0;
478 }
479
480 static int bfusb_send_frame(struct sk_buff *skb)
481 {
482 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
483 struct bfusb *bfusb;
484 struct sk_buff *nskb;
485 unsigned char buf[3];
486 int sent = 0, size, count;
487
488 BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, skb->pkt_type, skb->len);
489
490 if (!hdev) {
491 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
492 return -ENODEV;
493 }
494
495 if (!test_bit(HCI_RUNNING, &hdev->flags))
496 return -EBUSY;
497
498 bfusb = (struct bfusb *) hdev->driver_data;
499
500 switch (skb->pkt_type) {
501 case HCI_COMMAND_PKT:
502 hdev->stat.cmd_tx++;
503 break;
504 case HCI_ACLDATA_PKT:
505 hdev->stat.acl_tx++;
506 break;
507 case HCI_SCODATA_PKT:
508 hdev->stat.sco_tx++;
509 break;
510 };
511
512 /* Prepend skb with frame type */
513 memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
514
515 count = skb->len;
516
517 /* Max HCI frame size seems to be 1511 + 1 */
518 if (!(nskb = bt_skb_alloc(count + 32, GFP_ATOMIC))) {
519 BT_ERR("Can't allocate memory for new packet");
520 return -ENOMEM;
521 }
522
523 nskb->dev = (void *) bfusb;
524
525 while (count) {
526 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
527
528 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
529 buf[1] = 0x00;
530 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
531
532 memcpy(skb_put(nskb, 3), buf, 3);
533 memcpy(skb_put(nskb, size), skb->data + sent, size);
534
535 sent += size;
536 count -= size;
537 }
538
539 /* Don't send frame with multiple size of bulk max packet */
540 if ((nskb->len % bfusb->bulk_pkt_size) == 0) {
541 buf[0] = 0xdd;
542 buf[1] = 0x00;
543 memcpy(skb_put(nskb, 2), buf, 2);
544 }
545
546 read_lock(&bfusb->lock);
547
548 skb_queue_tail(&bfusb->transmit_q, nskb);
549 bfusb_tx_wakeup(bfusb);
550
551 read_unlock(&bfusb->lock);
552
553 kfree_skb(skb);
554
555 return 0;
556 }
557
558 static void bfusb_destruct(struct hci_dev *hdev)
559 {
560 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
561
562 BT_DBG("hdev %p bfusb %p", hdev, bfusb);
563
564 kfree(bfusb);
565 }
566
567 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
568 {
569 return -ENOIOCTLCMD;
570 }
571
572
573 static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int count)
574 {
575 unsigned char *buf;
576 int err, pipe, len, size, sent = 0;
577
578 BT_DBG("bfusb %p udev %p", bfusb, bfusb->udev);
579
580 BT_INFO("BlueFRITZ! USB loading firmware");
581
582 pipe = usb_sndctrlpipe(bfusb->udev, 0);
583
584 if (usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
585 0, 1, 0, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT) < 0) {
586 BT_ERR("Can't change to loading configuration");
587 return -EBUSY;
588 }
589
590 bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;
591
592 buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
593 if (!buf) {
594 BT_ERR("Can't allocate memory chunk for firmware");
595 return -ENOMEM;
596 }
597
598 pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
599
600 while (count) {
601 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
602
603 memcpy(buf, firmware + sent, size);
604
605 err = usb_bulk_msg(bfusb->udev, pipe, buf, size,
606 &len, BFUSB_BLOCK_TIMEOUT);
607
608 if (err || (len != size)) {
609 BT_ERR("Error in firmware loading");
610 goto error;
611 }
612
613 sent += size;
614 count -= size;
615 }
616
617 if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0,
618 &len, BFUSB_BLOCK_TIMEOUT)) < 0) {
619 BT_ERR("Error in null packet request");
620 goto error;
621 }
622
623 pipe = usb_sndctrlpipe(bfusb->udev, 0);
624
625 if ((err = usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
626 0, 2, 0, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT)) < 0) {
627 BT_ERR("Can't change to running configuration");
628 goto error;
629 }
630
631 bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;
632
633 BT_INFO("BlueFRITZ! USB device ready");
634
635 kfree(buf);
636 return 0;
637
638 error:
639 kfree(buf);
640
641 pipe = usb_sndctrlpipe(bfusb->udev, 0);
642
643 usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
644 0, 0, 0, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
645
646 return err;
647 }
648
649 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
650 {
651 const struct firmware *firmware;
652 struct usb_device *udev = interface_to_usbdev(intf);
653 struct usb_host_endpoint *bulk_out_ep;
654 struct usb_host_endpoint *bulk_in_ep;
655 struct hci_dev *hdev;
656 struct bfusb *bfusb;
657
658 BT_DBG("intf %p id %p", intf, id);
659
660 if (ignore)
661 return -ENODEV;
662
663 /* Check number of endpoints */
664 if (intf->cur_altsetting->desc.bNumEndpoints < 2)
665 return -EIO;
666
667 bulk_out_ep = &intf->cur_altsetting->endpoint[0];
668 bulk_in_ep = &intf->cur_altsetting->endpoint[1];
669
670 if (!bulk_out_ep || !bulk_in_ep) {
671 BT_ERR("Bulk endpoints not found");
672 goto done;
673 }
674
675 /* Initialize control structure and load firmware */
676 if (!(bfusb = kmalloc(sizeof(struct bfusb), GFP_KERNEL))) {
677 BT_ERR("Can't allocate memory for control structure");
678 goto done;
679 }
680
681 memset(bfusb, 0, sizeof(struct bfusb));
682
683 bfusb->udev = udev;
684 bfusb->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress;
685 bfusb->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress;
686 bfusb->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
687
688 rwlock_init(&bfusb->lock);
689
690 bfusb->reassembly = NULL;
691
692 skb_queue_head_init(&bfusb->transmit_q);
693 skb_queue_head_init(&bfusb->pending_q);
694 skb_queue_head_init(&bfusb->completed_q);
695
696 if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
697 BT_ERR("Firmware request failed");
698 goto error;
699 }
700
701 BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
702
703 if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) {
704 BT_ERR("Firmware loading failed");
705 goto release;
706 }
707
708 release_firmware(firmware);
709
710 /* Initialize and register HCI device */
711 hdev = hci_alloc_dev();
712 if (!hdev) {
713 BT_ERR("Can't allocate HCI device");
714 goto error;
715 }
716
717 bfusb->hdev = hdev;
718
719 hdev->type = HCI_USB;
720 hdev->driver_data = bfusb;
721 SET_HCIDEV_DEV(hdev, &intf->dev);
722
723 hdev->open = bfusb_open;
724 hdev->close = bfusb_close;
725 hdev->flush = bfusb_flush;
726 hdev->send = bfusb_send_frame;
727 hdev->destruct = bfusb_destruct;
728 hdev->ioctl = bfusb_ioctl;
729
730 hdev->owner = THIS_MODULE;
731
732 if (hci_register_dev(hdev) < 0) {
733 BT_ERR("Can't register HCI device");
734 hci_free_dev(hdev);
735 goto error;
736 }
737
738 usb_set_intfdata(intf, bfusb);
739
740 return 0;
741
742 release:
743 release_firmware(firmware);
744
745 error:
746 kfree(bfusb);
747
748 done:
749 return -EIO;
750 }
751
752 static void bfusb_disconnect(struct usb_interface *intf)
753 {
754 struct bfusb *bfusb = usb_get_intfdata(intf);
755 struct hci_dev *hdev = bfusb->hdev;
756
757 BT_DBG("intf %p", intf);
758
759 if (!hdev)
760 return;
761
762 usb_set_intfdata(intf, NULL);
763
764 bfusb_close(hdev);
765
766 if (hci_unregister_dev(hdev) < 0)
767 BT_ERR("Can't unregister HCI device %s", hdev->name);
768
769 hci_free_dev(hdev);
770 }
771
772 static struct usb_driver bfusb_driver = {
773 .owner = THIS_MODULE,
774 .name = "bfusb",
775 .probe = bfusb_probe,
776 .disconnect = bfusb_disconnect,
777 .id_table = bfusb_table,
778 };
779
780 static int __init bfusb_init(void)
781 {
782 int err;
783
784 BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
785
786 if ((err = usb_register(&bfusb_driver)) < 0)
787 BT_ERR("Failed to register BlueFRITZ! USB driver");
788
789 return err;
790 }
791
792 static void __exit bfusb_exit(void)
793 {
794 usb_deregister(&bfusb_driver);
795 }
796
797 module_init(bfusb_init);
798 module_exit(bfusb_exit);
799
800 module_param(ignore, bool, 0644);
801 MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
802
803 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
804 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
805 MODULE_VERSION(VERSION);
806 MODULE_LICENSE("GPL");
807
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