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Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-artful-kernel.git] / drivers / bluetooth / bfusb.c
CommitLineData
1da177e4
LT
1/*
2 *
3 * AVM BlueFRITZ! USB driver
4 *
9c724357 5 * Copyright (C) 2003-2006 Marcel Holtmann <marcel@holtmann.org>
1da177e4
LT
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
1da177e4
LT
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>
1da177e4
LT
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
943d56b0 41#define VERSION "1.2"
1da177e4
LT
42
43static struct usb_driver bfusb_driver;
44
9712d59a 45static const struct usb_device_id bfusb_table[] = {
1da177e4
LT
46 /* AVM BlueFRITZ! USB */
47 { USB_DEVICE(0x057c, 0x2200) },
48
49 { } /* Terminating entry */
50};
51
52MODULE_DEVICE_TABLE(usb, bfusb_table);
53
1da177e4
LT
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
9c724357 64struct bfusb_data {
1da177e4
LT
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
9c724357 86struct bfusb_data_scb {
1da177e4
LT
87 struct urb *urb;
88};
89
7d12e780
DH
90static void bfusb_tx_complete(struct urb *urb);
91static void bfusb_rx_complete(struct urb *urb);
1da177e4 92
9c724357 93static struct urb *bfusb_get_completed(struct bfusb_data *data)
1da177e4
LT
94{
95 struct sk_buff *skb;
96 struct urb *urb = NULL;
97
9c724357 98 BT_DBG("bfusb %p", data);
1da177e4 99
9c724357 100 skb = skb_dequeue(&data->completed_q);
1da177e4 101 if (skb) {
9c724357 102 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
1da177e4
LT
103 kfree_skb(skb);
104 }
105
106 return urb;
107}
108
9c724357 109static void bfusb_unlink_urbs(struct bfusb_data *data)
1da177e4
LT
110{
111 struct sk_buff *skb;
112 struct urb *urb;
113
9c724357 114 BT_DBG("bfusb %p", data);
1da177e4 115
9c724357
MH
116 while ((skb = skb_dequeue(&data->pending_q))) {
117 urb = ((struct bfusb_data_scb *) skb->cb)->urb;
1da177e4 118 usb_kill_urb(urb);
9c724357 119 skb_queue_tail(&data->completed_q, skb);
1da177e4
LT
120 }
121
9c724357 122 while ((urb = bfusb_get_completed(data)))
1da177e4
LT
123 usb_free_urb(urb);
124}
125
9c724357 126static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
1da177e4 127{
9c724357
MH
128 struct bfusb_data_scb *scb = (void *) skb->cb;
129 struct urb *urb = bfusb_get_completed(data);
1da177e4
LT
130 int err, pipe;
131
9c724357 132 BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
1da177e4 133
a08b15e6
VI
134 if (!urb) {
135 urb = usb_alloc_urb(0, GFP_ATOMIC);
136 if (!urb)
137 return -ENOMEM;
138 }
1da177e4 139
9c724357 140 pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
1da177e4 141
9c724357 142 usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
1da177e4
LT
143 bfusb_tx_complete, skb);
144
145 scb->urb = urb;
146
9c724357 147 skb_queue_tail(&data->pending_q, skb);
1da177e4
LT
148
149 err = usb_submit_urb(urb, GFP_ATOMIC);
150 if (err) {
151 BT_ERR("%s bulk tx submit failed urb %p err %d",
9c724357
MH
152 data->hdev->name, urb, err);
153 skb_unlink(skb, &data->pending_q);
1da177e4
LT
154 usb_free_urb(urb);
155 } else
9c724357 156 atomic_inc(&data->pending_tx);
1da177e4
LT
157
158 return err;
159}
160
9c724357 161static void bfusb_tx_wakeup(struct bfusb_data *data)
1da177e4
LT
162{
163 struct sk_buff *skb;
164
9c724357 165 BT_DBG("bfusb %p", data);
1da177e4 166
9c724357
MH
167 if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
168 set_bit(BFUSB_TX_WAKEUP, &data->state);
1da177e4
LT
169 return;
170 }
171
172 do {
9c724357 173 clear_bit(BFUSB_TX_WAKEUP, &data->state);
1da177e4 174
9c724357
MH
175 while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
176 (skb = skb_dequeue(&data->transmit_q))) {
177 if (bfusb_send_bulk(data, skb) < 0) {
178 skb_queue_head(&data->transmit_q, skb);
1da177e4
LT
179 break;
180 }
181 }
182
9c724357 183 } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
1da177e4 184
9c724357 185 clear_bit(BFUSB_TX_PROCESS, &data->state);
1da177e4
LT
186}
187
7d12e780 188static void bfusb_tx_complete(struct urb *urb)
1da177e4
LT
189{
190 struct sk_buff *skb = (struct sk_buff *) urb->context;
9c724357 191 struct bfusb_data *data = (struct bfusb_data *) skb->dev;
1da177e4 192
9c724357 193 BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
1da177e4 194
9c724357 195 atomic_dec(&data->pending_tx);
1da177e4 196
9c724357 197 if (!test_bit(HCI_RUNNING, &data->hdev->flags))
1da177e4
LT
198 return;
199
200 if (!urb->status)
9c724357 201 data->hdev->stat.byte_tx += skb->len;
1da177e4 202 else
9c724357 203 data->hdev->stat.err_tx++;
1da177e4 204
9c724357 205 read_lock(&data->lock);
1da177e4 206
9c724357
MH
207 skb_unlink(skb, &data->pending_q);
208 skb_queue_tail(&data->completed_q, skb);
1da177e4 209
9c724357 210 bfusb_tx_wakeup(data);
1da177e4 211
9c724357 212 read_unlock(&data->lock);
1da177e4
LT
213}
214
215
9c724357 216static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
1da177e4 217{
9c724357 218 struct bfusb_data_scb *scb;
1da177e4
LT
219 struct sk_buff *skb;
220 int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
221
a418b893 222 BT_DBG("bfusb %p urb %p", data, urb);
1da177e4 223
a08b15e6
VI
224 if (!urb) {
225 urb = usb_alloc_urb(0, GFP_ATOMIC);
226 if (!urb)
227 return -ENOMEM;
228 }
1da177e4 229
9c724357
MH
230 skb = bt_skb_alloc(size, GFP_ATOMIC);
231 if (!skb) {
1da177e4
LT
232 usb_free_urb(urb);
233 return -ENOMEM;
234 }
235
9c724357 236 skb->dev = (void *) data;
1da177e4 237
9c724357 238 scb = (struct bfusb_data_scb *) skb->cb;
1da177e4
LT
239 scb->urb = urb;
240
9c724357 241 pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
1da177e4 242
9c724357 243 usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
1da177e4
LT
244 bfusb_rx_complete, skb);
245
9c724357 246 skb_queue_tail(&data->pending_q, skb);
1da177e4
LT
247
248 err = usb_submit_urb(urb, GFP_ATOMIC);
249 if (err) {
250 BT_ERR("%s bulk rx submit failed urb %p err %d",
9c724357
MH
251 data->hdev->name, urb, err);
252 skb_unlink(skb, &data->pending_q);
1da177e4
LT
253 kfree_skb(skb);
254 usb_free_urb(urb);
255 }
256
257 return err;
258}
259
9c724357 260static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
1da177e4 261{
9c724357 262 BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
1da177e4
LT
263
264 if (hdr & 0x10) {
9c724357 265 BT_ERR("%s error in block", data->hdev->name);
b1fb0683 266 kfree_skb(data->reassembly);
9c724357 267 data->reassembly = NULL;
1da177e4
LT
268 return -EIO;
269 }
270
271 if (hdr & 0x04) {
272 struct sk_buff *skb;
273 unsigned char pkt_type;
274 int pkt_len = 0;
275
9c724357
MH
276 if (data->reassembly) {
277 BT_ERR("%s unexpected start block", data->hdev->name);
278 kfree_skb(data->reassembly);
279 data->reassembly = NULL;
1da177e4
LT
280 }
281
282 if (len < 1) {
9c724357 283 BT_ERR("%s no packet type found", data->hdev->name);
1da177e4
LT
284 return -EPROTO;
285 }
286
9c724357 287 pkt_type = *buf++; len--;
1da177e4
LT
288
289 switch (pkt_type) {
290 case HCI_EVENT_PKT:
291 if (len >= HCI_EVENT_HDR_SIZE) {
9c724357 292 struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
1da177e4
LT
293 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
294 } else {
9c724357 295 BT_ERR("%s event block is too short", data->hdev->name);
1da177e4
LT
296 return -EILSEQ;
297 }
298 break;
299
300 case HCI_ACLDATA_PKT:
301 if (len >= HCI_ACL_HDR_SIZE) {
9c724357 302 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
1da177e4
LT
303 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
304 } else {
9c724357 305 BT_ERR("%s data block is too short", data->hdev->name);
1da177e4
LT
306 return -EILSEQ;
307 }
308 break;
309
310 case HCI_SCODATA_PKT:
311 if (len >= HCI_SCO_HDR_SIZE) {
9c724357 312 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
1da177e4
LT
313 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
314 } else {
9c724357 315 BT_ERR("%s audio block is too short", data->hdev->name);
1da177e4
LT
316 return -EILSEQ;
317 }
318 break;
319 }
320
321 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
322 if (!skb) {
9c724357 323 BT_ERR("%s no memory for the packet", data->hdev->name);
1da177e4
LT
324 return -ENOMEM;
325 }
326
0d48d939 327 bt_cb(skb)->pkt_type = pkt_type;
1da177e4 328
9c724357 329 data->reassembly = skb;
1da177e4 330 } else {
9c724357
MH
331 if (!data->reassembly) {
332 BT_ERR("%s unexpected continuation block", data->hdev->name);
1da177e4
LT
333 return -EIO;
334 }
335 }
336
337 if (len > 0)
9c724357 338 memcpy(skb_put(data->reassembly, len), buf, len);
1da177e4
LT
339
340 if (hdr & 0x08) {
e1a26170 341 hci_recv_frame(data->hdev, data->reassembly);
9c724357 342 data->reassembly = NULL;
1da177e4
LT
343 }
344
345 return 0;
346}
347
7d12e780 348static void bfusb_rx_complete(struct urb *urb)
1da177e4
LT
349{
350 struct sk_buff *skb = (struct sk_buff *) urb->context;
9c724357 351 struct bfusb_data *data = (struct bfusb_data *) skb->dev;
1da177e4
LT
352 unsigned char *buf = urb->transfer_buffer;
353 int count = urb->actual_length;
354 int err, hdr, len;
355
a418b893 356 BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
1da177e4 357
9c724357 358 read_lock(&data->lock);
1da177e4 359
9c724357 360 if (!test_bit(HCI_RUNNING, &data->hdev->flags))
1da177e4
LT
361 goto unlock;
362
363 if (urb->status || !count)
364 goto resubmit;
365
9c724357 366 data->hdev->stat.byte_rx += count;
1da177e4
LT
367
368 skb_put(skb, count);
369
370 while (count) {
371 hdr = buf[0] | (buf[1] << 8);
372
373 if (hdr & 0x4000) {
374 len = 0;
375 count -= 2;
376 buf += 2;
377 } else {
378 len = (buf[2] == 0) ? 256 : buf[2];
379 count -= 3;
380 buf += 3;
381 }
382
383 if (count < len) {
384 BT_ERR("%s block extends over URB buffer ranges",
9c724357 385 data->hdev->name);
1da177e4
LT
386 }
387
388 if ((hdr & 0xe1) == 0xc1)
9c724357 389 bfusb_recv_block(data, hdr, buf, len);
1da177e4
LT
390
391 count -= len;
392 buf += len;
393 }
394
9c724357 395 skb_unlink(skb, &data->pending_q);
1da177e4
LT
396 kfree_skb(skb);
397
9c724357 398 bfusb_rx_submit(data, urb);
1da177e4 399
9c724357 400 read_unlock(&data->lock);
1da177e4
LT
401
402 return;
403
404resubmit:
9c724357 405 urb->dev = data->udev;
1da177e4
LT
406
407 err = usb_submit_urb(urb, GFP_ATOMIC);
408 if (err) {
409 BT_ERR("%s bulk resubmit failed urb %p err %d",
9c724357 410 data->hdev->name, urb, err);
1da177e4
LT
411 }
412
413unlock:
9c724357 414 read_unlock(&data->lock);
1da177e4
LT
415}
416
1da177e4
LT
417static int bfusb_open(struct hci_dev *hdev)
418{
155961e8 419 struct bfusb_data *data = hci_get_drvdata(hdev);
1da177e4
LT
420 unsigned long flags;
421 int i, err;
422
9c724357 423 BT_DBG("hdev %p bfusb %p", hdev, data);
1da177e4
LT
424
425 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
426 return 0;
427
9c724357 428 write_lock_irqsave(&data->lock, flags);
1da177e4 429
9c724357 430 err = bfusb_rx_submit(data, NULL);
1da177e4
LT
431 if (!err) {
432 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
9c724357 433 bfusb_rx_submit(data, NULL);
1da177e4
LT
434 } else {
435 clear_bit(HCI_RUNNING, &hdev->flags);
436 }
437
9c724357 438 write_unlock_irqrestore(&data->lock, flags);
1da177e4
LT
439
440 return err;
441}
442
443static int bfusb_flush(struct hci_dev *hdev)
444{
155961e8 445 struct bfusb_data *data = hci_get_drvdata(hdev);
1da177e4 446
9c724357 447 BT_DBG("hdev %p bfusb %p", hdev, data);
1da177e4 448
9c724357 449 skb_queue_purge(&data->transmit_q);
1da177e4
LT
450
451 return 0;
452}
453
454static int bfusb_close(struct hci_dev *hdev)
455{
155961e8 456 struct bfusb_data *data = hci_get_drvdata(hdev);
1da177e4
LT
457 unsigned long flags;
458
9c724357 459 BT_DBG("hdev %p bfusb %p", hdev, data);
1da177e4
LT
460
461 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
462 return 0;
463
9c724357
MH
464 write_lock_irqsave(&data->lock, flags);
465 write_unlock_irqrestore(&data->lock, flags);
1da177e4 466
9c724357 467 bfusb_unlink_urbs(data);
1da177e4
LT
468 bfusb_flush(hdev);
469
470 return 0;
471}
472
7bd8f09f 473static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1da177e4 474{
aae26277 475 struct bfusb_data *data = hci_get_drvdata(hdev);
1da177e4
LT
476 struct sk_buff *nskb;
477 unsigned char buf[3];
478 int sent = 0, size, count;
479
0d48d939 480 BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
1da177e4 481
1da177e4
LT
482 if (!test_bit(HCI_RUNNING, &hdev->flags))
483 return -EBUSY;
484
0d48d939 485 switch (bt_cb(skb)->pkt_type) {
1da177e4
LT
486 case HCI_COMMAND_PKT:
487 hdev->stat.cmd_tx++;
488 break;
489 case HCI_ACLDATA_PKT:
490 hdev->stat.acl_tx++;
491 break;
492 case HCI_SCODATA_PKT:
493 hdev->stat.sco_tx++;
494 break;
495 };
496
497 /* Prepend skb with frame type */
0d48d939 498 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
1da177e4
LT
499
500 count = skb->len;
501
502 /* Max HCI frame size seems to be 1511 + 1 */
9c724357
MH
503 nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
504 if (!nskb) {
1da177e4
LT
505 BT_ERR("Can't allocate memory for new packet");
506 return -ENOMEM;
507 }
508
9c724357 509 nskb->dev = (void *) data;
1da177e4
LT
510
511 while (count) {
512 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
513
514 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
515 buf[1] = 0x00;
516 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
517
518 memcpy(skb_put(nskb, 3), buf, 3);
d626f62b 519 skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
1da177e4
LT
520
521 sent += size;
522 count -= size;
523 }
524
525 /* Don't send frame with multiple size of bulk max packet */
9c724357 526 if ((nskb->len % data->bulk_pkt_size) == 0) {
1da177e4
LT
527 buf[0] = 0xdd;
528 buf[1] = 0x00;
529 memcpy(skb_put(nskb, 2), buf, 2);
530 }
531
9c724357 532 read_lock(&data->lock);
1da177e4 533
9c724357
MH
534 skb_queue_tail(&data->transmit_q, nskb);
535 bfusb_tx_wakeup(data);
1da177e4 536
9c724357 537 read_unlock(&data->lock);
1da177e4
LT
538
539 kfree_skb(skb);
540
541 return 0;
542}
543
8187b4fb
DW
544static int bfusb_load_firmware(struct bfusb_data *data,
545 const unsigned char *firmware, int count)
1da177e4
LT
546{
547 unsigned char *buf;
548 int err, pipe, len, size, sent = 0;
549
9c724357 550 BT_DBG("bfusb %p udev %p", data, data->udev);
1da177e4
LT
551
552 BT_INFO("BlueFRITZ! USB loading firmware");
553
7f103a0d
DH
554 buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_KERNEL);
555 if (!buf) {
556 BT_ERR("Can't allocate memory chunk for firmware");
557 return -ENOMEM;
558 }
559
9c724357 560 pipe = usb_sndctrlpipe(data->udev, 0);
1da177e4 561
9c724357 562 if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
1da177e4
LT
563 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
564 BT_ERR("Can't change to loading configuration");
7f103a0d 565 kfree(buf);
1da177e4
LT
566 return -EBUSY;
567 }
568
9c724357 569 data->udev->toggle[0] = data->udev->toggle[1] = 0;
1da177e4 570
9c724357 571 pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
1da177e4
LT
572
573 while (count) {
574 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
575
576 memcpy(buf, firmware + sent, size);
577
9c724357 578 err = usb_bulk_msg(data->udev, pipe, buf, size,
1da177e4
LT
579 &len, BFUSB_BLOCK_TIMEOUT);
580
581 if (err || (len != size)) {
582 BT_ERR("Error in firmware loading");
583 goto error;
584 }
585
586 sent += size;
587 count -= size;
588 }
589
9c724357
MH
590 err = usb_bulk_msg(data->udev, pipe, NULL, 0,
591 &len, BFUSB_BLOCK_TIMEOUT);
592 if (err < 0) {
1da177e4
LT
593 BT_ERR("Error in null packet request");
594 goto error;
595 }
596
9c724357 597 pipe = usb_sndctrlpipe(data->udev, 0);
1da177e4 598
9c724357
MH
599 err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
600 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
601 if (err < 0) {
1da177e4
LT
602 BT_ERR("Can't change to running configuration");
603 goto error;
604 }
605
9c724357 606 data->udev->toggle[0] = data->udev->toggle[1] = 0;
1da177e4
LT
607
608 BT_INFO("BlueFRITZ! USB device ready");
609
610 kfree(buf);
611 return 0;
612
613error:
614 kfree(buf);
615
9c724357 616 pipe = usb_sndctrlpipe(data->udev, 0);
1da177e4 617
9c724357 618 usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
1da177e4
LT
619 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
620
621 return err;
622}
623
624static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
625{
626 const struct firmware *firmware;
627 struct usb_device *udev = interface_to_usbdev(intf);
628 struct usb_host_endpoint *bulk_out_ep;
629 struct usb_host_endpoint *bulk_in_ep;
630 struct hci_dev *hdev;
9c724357 631 struct bfusb_data *data;
1da177e4
LT
632
633 BT_DBG("intf %p id %p", intf, id);
634
1da177e4
LT
635 /* Check number of endpoints */
636 if (intf->cur_altsetting->desc.bNumEndpoints < 2)
637 return -EIO;
638
639 bulk_out_ep = &intf->cur_altsetting->endpoint[0];
640 bulk_in_ep = &intf->cur_altsetting->endpoint[1];
641
642 if (!bulk_out_ep || !bulk_in_ep) {
643 BT_ERR("Bulk endpoints not found");
644 goto done;
645 }
646
647 /* Initialize control structure and load firmware */
0213cd8d 648 data = devm_kzalloc(&intf->dev, sizeof(struct bfusb_data), GFP_KERNEL);
9c724357 649 if (!data) {
1da177e4
LT
650 BT_ERR("Can't allocate memory for control structure");
651 goto done;
652 }
653
9c724357
MH
654 data->udev = udev;
655 data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress;
656 data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress;
657 data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
1da177e4 658
9c724357 659 rwlock_init(&data->lock);
1da177e4 660
9c724357 661 data->reassembly = NULL;
1da177e4 662
9c724357
MH
663 skb_queue_head_init(&data->transmit_q);
664 skb_queue_head_init(&data->pending_q);
665 skb_queue_head_init(&data->completed_q);
1da177e4
LT
666
667 if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
668 BT_ERR("Firmware request failed");
0213cd8d 669 goto done;
1da177e4
LT
670 }
671
a418b893 672 BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
1da177e4 673
9c724357 674 if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
1da177e4
LT
675 BT_ERR("Firmware loading failed");
676 goto release;
677 }
678
679 release_firmware(firmware);
680
681 /* Initialize and register HCI device */
682 hdev = hci_alloc_dev();
683 if (!hdev) {
684 BT_ERR("Can't allocate HCI device");
0213cd8d 685 goto done;
1da177e4
LT
686 }
687
9c724357 688 data->hdev = hdev;
1da177e4 689
c13854ce 690 hdev->bus = HCI_USB;
155961e8 691 hci_set_drvdata(hdev, data);
1da177e4
LT
692 SET_HCIDEV_DEV(hdev, &intf->dev);
693
19cf55a2
MH
694 hdev->open = bfusb_open;
695 hdev->close = bfusb_close;
696 hdev->flush = bfusb_flush;
697 hdev->send = bfusb_send_frame;
1da177e4 698
9ef80d40
MH
699 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
700
1da177e4
LT
701 if (hci_register_dev(hdev) < 0) {
702 BT_ERR("Can't register HCI device");
703 hci_free_dev(hdev);
0213cd8d 704 goto done;
1da177e4
LT
705 }
706
9c724357 707 usb_set_intfdata(intf, data);
1da177e4
LT
708
709 return 0;
710
711release:
712 release_firmware(firmware);
713
1da177e4
LT
714done:
715 return -EIO;
716}
717
718static void bfusb_disconnect(struct usb_interface *intf)
719{
9c724357
MH
720 struct bfusb_data *data = usb_get_intfdata(intf);
721 struct hci_dev *hdev = data->hdev;
1da177e4
LT
722
723 BT_DBG("intf %p", intf);
724
725 if (!hdev)
726 return;
727
728 usb_set_intfdata(intf, NULL);
729
730 bfusb_close(hdev);
731
13ea4015 732 hci_unregister_dev(hdev);
1da177e4
LT
733 hci_free_dev(hdev);
734}
735
736static struct usb_driver bfusb_driver = {
1da177e4
LT
737 .name = "bfusb",
738 .probe = bfusb_probe,
739 .disconnect = bfusb_disconnect,
740 .id_table = bfusb_table,
e1f12eb6 741 .disable_hub_initiated_lpm = 1,
1da177e4
LT
742};
743
93f1508c 744module_usb_driver(bfusb_driver);
1da177e4 745
1da177e4
LT
746MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
747MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
748MODULE_VERSION(VERSION);
749MODULE_LICENSE("GPL");
2312119a 750MODULE_FIRMWARE("bfubase.frm");