Bluetooth: Ignore isochronous endpoints for Intel USB bootloader
[pandora-kernel.git] / drivers / bluetooth / btusb.c
1 /*
2  *
3  *  Generic Bluetooth USB driver
4  *
5  *  Copyright (C) 2005-2008  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/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE            0x01
51 #define BTUSB_DIGIANSWER        0x02
52 #define BTUSB_CSR               0x04
53 #define BTUSB_SNIFFER           0x08
54 #define BTUSB_BCM92035          0x10
55 #define BTUSB_BROKEN_ISOC       0x20
56 #define BTUSB_WRONG_SCO_MTU     0x40
57 #define BTUSB_ATH3012           0x80
58 #define BTUSB_INTEL_BOOT        0x200
59
60 static struct usb_device_id btusb_table[] = {
61         /* Generic Bluetooth USB device */
62         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
63
64         /* Apple-specific (Broadcom) devices */
65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
66
67         /* MediaTek MT76x0E */
68         { USB_DEVICE(0x0e8d, 0x763f) },
69
70         /* Broadcom SoftSailing reporting vendor specific */
71         { USB_DEVICE(0x0a5c, 0x21e1) },
72
73         /* Apple MacBookPro 7,1 */
74         { USB_DEVICE(0x05ac, 0x8213) },
75
76         /* Apple iMac11,1 */
77         { USB_DEVICE(0x05ac, 0x8215) },
78
79         /* Apple MacBookPro6,2 */
80         { USB_DEVICE(0x05ac, 0x8218) },
81
82         /* Apple MacBookAir3,1, MacBookAir3,2 */
83         { USB_DEVICE(0x05ac, 0x821b) },
84
85         /* Apple MacBookAir4,1 */
86         { USB_DEVICE(0x05ac, 0x821f) },
87
88         /* Apple MacBookPro8,2 */
89         { USB_DEVICE(0x05ac, 0x821a) },
90
91         /* Apple MacMini5,1 */
92         { USB_DEVICE(0x05ac, 0x8281) },
93
94         /* AVM BlueFRITZ! USB v2.0 */
95         { USB_DEVICE(0x057c, 0x3800) },
96
97         /* Bluetooth Ultraport Module from IBM */
98         { USB_DEVICE(0x04bf, 0x030a) },
99
100         /* ALPS Modules with non-standard id */
101         { USB_DEVICE(0x044e, 0x3001) },
102         { USB_DEVICE(0x044e, 0x3002) },
103
104         /* Ericsson with non-standard id */
105         { USB_DEVICE(0x0bdb, 0x1002) },
106
107         /* Canyon CN-BTU1 with HID interfaces */
108         { USB_DEVICE(0x0c10, 0x0000) },
109
110         /* Broadcom BCM20702A0 */
111         { USB_DEVICE(0x0489, 0xe042) },
112         { USB_DEVICE(0x04ca, 0x2003) },
113         { USB_DEVICE(0x0b05, 0x17b5) },
114         { USB_DEVICE(0x0b05, 0x17cb) },
115         { USB_DEVICE(0x413c, 0x8197) },
116
117         /* Foxconn - Hon Hai */
118         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
119
120         /* Broadcom devices with vendor specific id */
121         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
122
123         /* Belkin F8065bf - Broadcom based */
124         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
125
126         /* IMC Networks - Broadcom based */
127         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
128
129         /* Intel Bluetooth USB Bootloader (RAM module) */
130         { USB_DEVICE(0x8087, 0x0a5a),
131           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
132
133         { }     /* Terminating entry */
134 };
135
136 MODULE_DEVICE_TABLE(usb, btusb_table);
137
138 static struct usb_device_id blacklist_table[] = {
139         /* CSR BlueCore devices */
140         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
141
142         /* Broadcom BCM2033 without firmware */
143         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
144
145         /* Atheros 3011 with sflash firmware */
146         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
147         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
148         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
149         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
150         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
151         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
152
153         /* Atheros AR9285 Malbec with sflash firmware */
154         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
155
156         /* Atheros 3012 with sflash firmware */
157         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
158         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
159         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
160         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
161         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
162         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
163         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
164         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
165         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
166         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
167         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
168         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
169         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
170         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
171         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
172         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
173         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
174         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
175         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
176         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
177         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
178         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
179         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
180         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
181         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
182         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
183         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
184         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
185         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
186         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
187
188         /* Atheros AR5BBU12 with sflash firmware */
189         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
190
191         /* Atheros AR5BBU12 with sflash firmware */
192         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
193         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
194
195         /* Broadcom BCM2035 */
196         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
197         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
198         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
199
200         /* Broadcom BCM2045 */
201         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
202         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
203
204         /* IBM/Lenovo ThinkPad with Broadcom chip */
205         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
206         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
207
208         /* HP laptop with Broadcom chip */
209         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
210
211         /* Dell laptop with Broadcom chip */
212         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
213
214         /* Dell Wireless 370 and 410 devices */
215         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
216         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
217
218         /* Belkin F8T012 and F8T013 devices */
219         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
220         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
221
222         /* Asus WL-BTD202 device */
223         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
224
225         /* Kensington Bluetooth USB adapter */
226         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
227
228         /* RTX Telecom based adapters with buggy SCO support */
229         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
230         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
231
232         /* CONWISE Technology based adapters with buggy SCO support */
233         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
234
235         /* Digianswer devices */
236         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
237         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
238
239         /* CSR BlueCore Bluetooth Sniffer */
240         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
241
242         /* Frontline ComProbe Bluetooth Sniffer */
243         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
244
245         { }     /* Terminating entry */
246 };
247
248 #define BTUSB_MAX_ISOC_FRAMES   10
249
250 #define BTUSB_INTR_RUNNING      0
251 #define BTUSB_BULK_RUNNING      1
252 #define BTUSB_ISOC_RUNNING      2
253 #define BTUSB_SUSPENDING        3
254 #define BTUSB_DID_ISO_RESUME    4
255
256 struct btusb_data {
257         struct hci_dev       *hdev;
258         struct usb_device    *udev;
259         struct usb_interface *intf;
260         struct usb_interface *isoc;
261
262         spinlock_t lock;
263
264         unsigned long flags;
265
266         struct work_struct work;
267         struct work_struct waker;
268
269         struct usb_anchor tx_anchor;
270         struct usb_anchor intr_anchor;
271         struct usb_anchor bulk_anchor;
272         struct usb_anchor isoc_anchor;
273         struct usb_anchor deferred;
274         int tx_in_flight;
275         spinlock_t txlock;
276
277         struct usb_endpoint_descriptor *intr_ep;
278         struct usb_endpoint_descriptor *bulk_tx_ep;
279         struct usb_endpoint_descriptor *bulk_rx_ep;
280         struct usb_endpoint_descriptor *isoc_tx_ep;
281         struct usb_endpoint_descriptor *isoc_rx_ep;
282
283         __u8 cmdreq_type;
284
285         unsigned int sco_num;
286         int isoc_altsetting;
287         int suspend_count;
288 };
289
290 static int inc_tx(struct btusb_data *data)
291 {
292         unsigned long flags;
293         int rv;
294
295         spin_lock_irqsave(&data->txlock, flags);
296         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
297         if (!rv)
298                 data->tx_in_flight++;
299         spin_unlock_irqrestore(&data->txlock, flags);
300
301         return rv;
302 }
303
304 static void btusb_intr_complete(struct urb *urb)
305 {
306         struct hci_dev *hdev = urb->context;
307         struct btusb_data *data = hdev->driver_data;
308         int err;
309
310         BT_DBG("%s urb %p status %d count %d", hdev->name,
311                                         urb, urb->status, urb->actual_length);
312
313         if (!test_bit(HCI_RUNNING, &hdev->flags))
314                 return;
315
316         if (urb->status == 0) {
317                 hdev->stat.byte_rx += urb->actual_length;
318
319                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
320                                                 urb->transfer_buffer,
321                                                 urb->actual_length) < 0) {
322                         BT_ERR("%s corrupted event packet", hdev->name);
323                         hdev->stat.err_rx++;
324                 }
325         } else if (urb->status == -ENOENT) {
326                 /* Avoid suspend failed when usb_kill_urb */
327                 return;
328         }
329
330         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
331                 return;
332
333         usb_mark_last_busy(data->udev);
334         usb_anchor_urb(urb, &data->intr_anchor);
335
336         err = usb_submit_urb(urb, GFP_ATOMIC);
337         if (err < 0) {
338                 /* -EPERM: urb is being killed;
339                  * -ENODEV: device got disconnected */
340                 if (err != -EPERM && err != -ENODEV)
341                         BT_ERR("%s urb %p failed to resubmit (%d)",
342                                                 hdev->name, urb, -err);
343                 usb_unanchor_urb(urb);
344         }
345 }
346
347 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
348 {
349         struct btusb_data *data = hdev->driver_data;
350         struct urb *urb;
351         unsigned char *buf;
352         unsigned int pipe;
353         int err, size;
354
355         BT_DBG("%s", hdev->name);
356
357         if (!data->intr_ep)
358                 return -ENODEV;
359
360         urb = usb_alloc_urb(0, mem_flags);
361         if (!urb)
362                 return -ENOMEM;
363
364         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
365
366         buf = kmalloc(size, mem_flags);
367         if (!buf) {
368                 usb_free_urb(urb);
369                 return -ENOMEM;
370         }
371
372         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
373
374         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
375                                                 btusb_intr_complete, hdev,
376                                                 data->intr_ep->bInterval);
377
378         urb->transfer_flags |= URB_FREE_BUFFER;
379
380         usb_anchor_urb(urb, &data->intr_anchor);
381
382         err = usb_submit_urb(urb, mem_flags);
383         if (err < 0) {
384                 BT_ERR("%s urb %p submission failed (%d)",
385                                                 hdev->name, urb, -err);
386                 usb_unanchor_urb(urb);
387         }
388
389         usb_free_urb(urb);
390
391         return err;
392 }
393
394 static void btusb_bulk_complete(struct urb *urb)
395 {
396         struct hci_dev *hdev = urb->context;
397         struct btusb_data *data = hdev->driver_data;
398         int err;
399
400         BT_DBG("%s urb %p status %d count %d", hdev->name,
401                                         urb, urb->status, urb->actual_length);
402
403         if (!test_bit(HCI_RUNNING, &hdev->flags))
404                 return;
405
406         if (urb->status == 0) {
407                 hdev->stat.byte_rx += urb->actual_length;
408
409                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
410                                                 urb->transfer_buffer,
411                                                 urb->actual_length) < 0) {
412                         BT_ERR("%s corrupted ACL packet", hdev->name);
413                         hdev->stat.err_rx++;
414                 }
415         } else if (urb->status == -ENOENT) {
416                 /* Avoid suspend failed when usb_kill_urb */
417                 return;
418         }
419
420         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
421                 return;
422
423         usb_anchor_urb(urb, &data->bulk_anchor);
424         usb_mark_last_busy(data->udev);
425
426         err = usb_submit_urb(urb, GFP_ATOMIC);
427         if (err < 0) {
428                 /* -EPERM: urb is being killed;
429                  * -ENODEV: device got disconnected */
430                 if (err != -EPERM && err != -ENODEV)
431                         BT_ERR("%s urb %p failed to resubmit (%d)",
432                                                 hdev->name, urb, -err);
433                 usb_unanchor_urb(urb);
434         }
435 }
436
437 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
438 {
439         struct btusb_data *data = hdev->driver_data;
440         struct urb *urb;
441         unsigned char *buf;
442         unsigned int pipe;
443         int err, size = HCI_MAX_FRAME_SIZE;
444
445         BT_DBG("%s", hdev->name);
446
447         if (!data->bulk_rx_ep)
448                 return -ENODEV;
449
450         urb = usb_alloc_urb(0, mem_flags);
451         if (!urb)
452                 return -ENOMEM;
453
454         buf = kmalloc(size, mem_flags);
455         if (!buf) {
456                 usb_free_urb(urb);
457                 return -ENOMEM;
458         }
459
460         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
461
462         usb_fill_bulk_urb(urb, data->udev, pipe,
463                                         buf, size, btusb_bulk_complete, hdev);
464
465         urb->transfer_flags |= URB_FREE_BUFFER;
466
467         usb_mark_last_busy(data->udev);
468         usb_anchor_urb(urb, &data->bulk_anchor);
469
470         err = usb_submit_urb(urb, mem_flags);
471         if (err < 0) {
472                 BT_ERR("%s urb %p submission failed (%d)",
473                                                 hdev->name, urb, -err);
474                 usb_unanchor_urb(urb);
475         }
476
477         usb_free_urb(urb);
478
479         return err;
480 }
481
482 static void btusb_isoc_complete(struct urb *urb)
483 {
484         struct hci_dev *hdev = urb->context;
485         struct btusb_data *data = hdev->driver_data;
486         int i, err;
487
488         BT_DBG("%s urb %p status %d count %d", hdev->name,
489                                         urb, urb->status, urb->actual_length);
490
491         if (!test_bit(HCI_RUNNING, &hdev->flags))
492                 return;
493
494         if (urb->status == 0) {
495                 for (i = 0; i < urb->number_of_packets; i++) {
496                         unsigned int offset = urb->iso_frame_desc[i].offset;
497                         unsigned int length = urb->iso_frame_desc[i].actual_length;
498
499                         if (urb->iso_frame_desc[i].status)
500                                 continue;
501
502                         hdev->stat.byte_rx += length;
503
504                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
505                                                 urb->transfer_buffer + offset,
506                                                                 length) < 0) {
507                                 BT_ERR("%s corrupted SCO packet", hdev->name);
508                                 hdev->stat.err_rx++;
509                         }
510                 }
511         } else if (urb->status == -ENOENT) {
512                 /* Avoid suspend failed when usb_kill_urb */
513                 return;
514         }
515
516         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
517                 return;
518
519         usb_anchor_urb(urb, &data->isoc_anchor);
520
521         err = usb_submit_urb(urb, GFP_ATOMIC);
522         if (err < 0) {
523                 /* -EPERM: urb is being killed;
524                  * -ENODEV: device got disconnected */
525                 if (err != -EPERM && err != -ENODEV)
526                         BT_ERR("%s urb %p failed to resubmit (%d)",
527                                                 hdev->name, urb, -err);
528                 usb_unanchor_urb(urb);
529         }
530 }
531
532 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
533 {
534         int i, offset = 0;
535
536         BT_DBG("len %d mtu %d", len, mtu);
537
538         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
539                                         i++, offset += mtu, len -= mtu) {
540                 urb->iso_frame_desc[i].offset = offset;
541                 urb->iso_frame_desc[i].length = mtu;
542         }
543
544         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
545                 urb->iso_frame_desc[i].offset = offset;
546                 urb->iso_frame_desc[i].length = len;
547                 i++;
548         }
549
550         urb->number_of_packets = i;
551 }
552
553 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
554 {
555         struct btusb_data *data = hdev->driver_data;
556         struct urb *urb;
557         unsigned char *buf;
558         unsigned int pipe;
559         int err, size;
560
561         BT_DBG("%s", hdev->name);
562
563         if (!data->isoc_rx_ep)
564                 return -ENODEV;
565
566         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
567         if (!urb)
568                 return -ENOMEM;
569
570         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
571                                                 BTUSB_MAX_ISOC_FRAMES;
572
573         buf = kmalloc(size, mem_flags);
574         if (!buf) {
575                 usb_free_urb(urb);
576                 return -ENOMEM;
577         }
578
579         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
580
581         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
582                                 hdev, data->isoc_rx_ep->bInterval);
583
584         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
585
586         __fill_isoc_descriptor(urb, size,
587                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
588
589         usb_anchor_urb(urb, &data->isoc_anchor);
590
591         err = usb_submit_urb(urb, mem_flags);
592         if (err < 0) {
593                 BT_ERR("%s urb %p submission failed (%d)",
594                                                 hdev->name, urb, -err);
595                 usb_unanchor_urb(urb);
596         }
597
598         usb_free_urb(urb);
599
600         return err;
601 }
602
603 static void btusb_tx_complete(struct urb *urb)
604 {
605         struct sk_buff *skb = urb->context;
606         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
607         struct btusb_data *data = hdev->driver_data;
608
609         BT_DBG("%s urb %p status %d count %d", hdev->name,
610                                         urb, urb->status, urb->actual_length);
611
612         if (!test_bit(HCI_RUNNING, &hdev->flags))
613                 goto done;
614
615         if (!urb->status)
616                 hdev->stat.byte_tx += urb->transfer_buffer_length;
617         else
618                 hdev->stat.err_tx++;
619
620 done:
621         spin_lock(&data->txlock);
622         data->tx_in_flight--;
623         spin_unlock(&data->txlock);
624
625         kfree(urb->setup_packet);
626
627         kfree_skb(skb);
628 }
629
630 static void btusb_isoc_tx_complete(struct urb *urb)
631 {
632         struct sk_buff *skb = urb->context;
633         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
634
635         BT_DBG("%s urb %p status %d count %d", hdev->name,
636                                         urb, urb->status, urb->actual_length);
637
638         if (!test_bit(HCI_RUNNING, &hdev->flags))
639                 goto done;
640
641         if (!urb->status)
642                 hdev->stat.byte_tx += urb->transfer_buffer_length;
643         else
644                 hdev->stat.err_tx++;
645
646 done:
647         kfree(urb->setup_packet);
648
649         kfree_skb(skb);
650 }
651
652 static int btusb_open(struct hci_dev *hdev)
653 {
654         struct btusb_data *data = hdev->driver_data;
655         int err;
656
657         BT_DBG("%s", hdev->name);
658
659         err = usb_autopm_get_interface(data->intf);
660         if (err < 0)
661                 return err;
662
663         data->intf->needs_remote_wakeup = 1;
664
665         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
666                 goto done;
667
668         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
669                 goto done;
670
671         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
672         if (err < 0)
673                 goto failed;
674
675         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
676         if (err < 0) {
677                 usb_kill_anchored_urbs(&data->intr_anchor);
678                 goto failed;
679         }
680
681         set_bit(BTUSB_BULK_RUNNING, &data->flags);
682         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
683
684 done:
685         usb_autopm_put_interface(data->intf);
686         return 0;
687
688 failed:
689         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
690         clear_bit(HCI_RUNNING, &hdev->flags);
691         usb_autopm_put_interface(data->intf);
692         return err;
693 }
694
695 static void btusb_stop_traffic(struct btusb_data *data)
696 {
697         usb_kill_anchored_urbs(&data->intr_anchor);
698         usb_kill_anchored_urbs(&data->bulk_anchor);
699         usb_kill_anchored_urbs(&data->isoc_anchor);
700 }
701
702 static int btusb_close(struct hci_dev *hdev)
703 {
704         struct btusb_data *data = hdev->driver_data;
705         int err;
706
707         BT_DBG("%s", hdev->name);
708
709         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
710                 return 0;
711
712         cancel_work_sync(&data->work);
713         cancel_work_sync(&data->waker);
714
715         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
716         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
717         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
718
719         btusb_stop_traffic(data);
720         err = usb_autopm_get_interface(data->intf);
721         if (err < 0)
722                 goto failed;
723
724         data->intf->needs_remote_wakeup = 0;
725         usb_autopm_put_interface(data->intf);
726
727 failed:
728         usb_scuttle_anchored_urbs(&data->deferred);
729         return 0;
730 }
731
732 static int btusb_flush(struct hci_dev *hdev)
733 {
734         struct btusb_data *data = hdev->driver_data;
735
736         BT_DBG("%s", hdev->name);
737
738         usb_kill_anchored_urbs(&data->tx_anchor);
739
740         return 0;
741 }
742
743 static int btusb_send_frame(struct sk_buff *skb)
744 {
745         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
746         struct btusb_data *data = hdev->driver_data;
747         struct usb_ctrlrequest *dr;
748         struct urb *urb;
749         unsigned int pipe;
750         int err;
751
752         BT_DBG("%s", hdev->name);
753
754         if (!test_bit(HCI_RUNNING, &hdev->flags))
755                 return -EBUSY;
756
757         switch (bt_cb(skb)->pkt_type) {
758         case HCI_COMMAND_PKT:
759                 urb = usb_alloc_urb(0, GFP_ATOMIC);
760                 if (!urb)
761                         return -ENOMEM;
762
763                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
764                 if (!dr) {
765                         usb_free_urb(urb);
766                         return -ENOMEM;
767                 }
768
769                 dr->bRequestType = data->cmdreq_type;
770                 dr->bRequest     = 0;
771                 dr->wIndex       = 0;
772                 dr->wValue       = 0;
773                 dr->wLength      = __cpu_to_le16(skb->len);
774
775                 pipe = usb_sndctrlpipe(data->udev, 0x00);
776
777                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
778                                 skb->data, skb->len, btusb_tx_complete, skb);
779
780                 hdev->stat.cmd_tx++;
781                 break;
782
783         case HCI_ACLDATA_PKT:
784                 if (!data->bulk_tx_ep)
785                         return -ENODEV;
786
787                 urb = usb_alloc_urb(0, GFP_ATOMIC);
788                 if (!urb)
789                         return -ENOMEM;
790
791                 pipe = usb_sndbulkpipe(data->udev,
792                                         data->bulk_tx_ep->bEndpointAddress);
793
794                 usb_fill_bulk_urb(urb, data->udev, pipe,
795                                 skb->data, skb->len, btusb_tx_complete, skb);
796
797                 hdev->stat.acl_tx++;
798                 break;
799
800         case HCI_SCODATA_PKT:
801                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
802                         return -ENODEV;
803
804                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
805                 if (!urb)
806                         return -ENOMEM;
807
808                 pipe = usb_sndisocpipe(data->udev,
809                                         data->isoc_tx_ep->bEndpointAddress);
810
811                 usb_fill_int_urb(urb, data->udev, pipe,
812                                 skb->data, skb->len, btusb_isoc_tx_complete,
813                                 skb, data->isoc_tx_ep->bInterval);
814
815                 urb->transfer_flags  = URB_ISO_ASAP;
816
817                 __fill_isoc_descriptor(urb, skb->len,
818                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
819
820                 hdev->stat.sco_tx++;
821                 goto skip_waking;
822
823         default:
824                 return -EILSEQ;
825         }
826
827         err = inc_tx(data);
828         if (err) {
829                 usb_anchor_urb(urb, &data->deferred);
830                 schedule_work(&data->waker);
831                 err = 0;
832                 goto done;
833         }
834
835 skip_waking:
836         usb_anchor_urb(urb, &data->tx_anchor);
837
838         err = usb_submit_urb(urb, GFP_ATOMIC);
839         if (err < 0) {
840                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
841                 kfree(urb->setup_packet);
842                 usb_unanchor_urb(urb);
843         } else {
844                 usb_mark_last_busy(data->udev);
845         }
846
847 done:
848         usb_free_urb(urb);
849         return err;
850 }
851
852 static void btusb_destruct(struct hci_dev *hdev)
853 {
854         struct btusb_data *data = hdev->driver_data;
855
856         BT_DBG("%s", hdev->name);
857
858         kfree(data);
859 }
860
861 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
862 {
863         struct btusb_data *data = hdev->driver_data;
864
865         BT_DBG("%s evt %d", hdev->name, evt);
866
867         if (hdev->conn_hash.sco_num != data->sco_num) {
868                 data->sco_num = hdev->conn_hash.sco_num;
869                 schedule_work(&data->work);
870         }
871 }
872
873 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
874 {
875         struct btusb_data *data = hdev->driver_data;
876         struct usb_interface *intf = data->isoc;
877         struct usb_endpoint_descriptor *ep_desc;
878         int i, err;
879
880         if (!data->isoc)
881                 return -ENODEV;
882
883         err = usb_set_interface(data->udev, 1, altsetting);
884         if (err < 0) {
885                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
886                 return err;
887         }
888
889         data->isoc_altsetting = altsetting;
890
891         data->isoc_tx_ep = NULL;
892         data->isoc_rx_ep = NULL;
893
894         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
895                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
896
897                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
898                         data->isoc_tx_ep = ep_desc;
899                         continue;
900                 }
901
902                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
903                         data->isoc_rx_ep = ep_desc;
904                         continue;
905                 }
906         }
907
908         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
909                 BT_ERR("%s invalid SCO descriptors", hdev->name);
910                 return -ENODEV;
911         }
912
913         return 0;
914 }
915
916 static void btusb_work(struct work_struct *work)
917 {
918         struct btusb_data *data = container_of(work, struct btusb_data, work);
919         struct hci_dev *hdev = data->hdev;
920         int err;
921
922         if (hdev->conn_hash.sco_num > 0) {
923                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
924                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
925                         if (err < 0) {
926                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
927                                 usb_kill_anchored_urbs(&data->isoc_anchor);
928                                 return;
929                         }
930
931                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
932                 }
933                 if (data->isoc_altsetting != 2) {
934                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
935                         usb_kill_anchored_urbs(&data->isoc_anchor);
936
937                         if (__set_isoc_interface(hdev, 2) < 0)
938                                 return;
939                 }
940
941                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
942                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
943                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
944                         else
945                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
946                 }
947         } else {
948                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
949                 usb_kill_anchored_urbs(&data->isoc_anchor);
950
951                 __set_isoc_interface(hdev, 0);
952                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
953                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
954         }
955 }
956
957 static void btusb_waker(struct work_struct *work)
958 {
959         struct btusb_data *data = container_of(work, struct btusb_data, waker);
960         int err;
961
962         err = usb_autopm_get_interface(data->intf);
963         if (err < 0)
964                 return;
965
966         usb_autopm_put_interface(data->intf);
967 }
968
969 static int btusb_probe(struct usb_interface *intf,
970                                 const struct usb_device_id *id)
971 {
972         struct usb_endpoint_descriptor *ep_desc;
973         struct btusb_data *data;
974         struct hci_dev *hdev;
975         int i, err;
976
977         BT_DBG("intf %p id %p", intf, id);
978
979         /* interface numbers are hardcoded in the spec */
980         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
981                 return -ENODEV;
982
983         if (!id->driver_info) {
984                 const struct usb_device_id *match;
985                 match = usb_match_id(intf, blacklist_table);
986                 if (match)
987                         id = match;
988         }
989
990         if (id->driver_info == BTUSB_IGNORE)
991                 return -ENODEV;
992
993         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
994                 return -ENODEV;
995
996         if (ignore_csr && id->driver_info & BTUSB_CSR)
997                 return -ENODEV;
998
999         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1000                 return -ENODEV;
1001
1002         if (id->driver_info & BTUSB_ATH3012) {
1003                 struct usb_device *udev = interface_to_usbdev(intf);
1004
1005                 /* Old firmware would otherwise let ath3k driver load
1006                  * patch and sysconfig files */
1007                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1008                         return -ENODEV;
1009         }
1010
1011         data = kzalloc(sizeof(*data), GFP_KERNEL);
1012         if (!data)
1013                 return -ENOMEM;
1014
1015         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1016                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1017
1018                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1019                         data->intr_ep = ep_desc;
1020                         continue;
1021                 }
1022
1023                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1024                         data->bulk_tx_ep = ep_desc;
1025                         continue;
1026                 }
1027
1028                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1029                         data->bulk_rx_ep = ep_desc;
1030                         continue;
1031                 }
1032         }
1033
1034         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1035                 kfree(data);
1036                 return -ENODEV;
1037         }
1038
1039         data->cmdreq_type = USB_TYPE_CLASS;
1040
1041         data->udev = interface_to_usbdev(intf);
1042         data->intf = intf;
1043
1044         spin_lock_init(&data->lock);
1045
1046         INIT_WORK(&data->work, btusb_work);
1047         INIT_WORK(&data->waker, btusb_waker);
1048         spin_lock_init(&data->txlock);
1049
1050         init_usb_anchor(&data->tx_anchor);
1051         init_usb_anchor(&data->intr_anchor);
1052         init_usb_anchor(&data->bulk_anchor);
1053         init_usb_anchor(&data->isoc_anchor);
1054         init_usb_anchor(&data->deferred);
1055
1056         hdev = hci_alloc_dev();
1057         if (!hdev) {
1058                 kfree(data);
1059                 return -ENOMEM;
1060         }
1061
1062         hdev->bus = HCI_USB;
1063         hdev->driver_data = data;
1064
1065         data->hdev = hdev;
1066
1067         SET_HCIDEV_DEV(hdev, &intf->dev);
1068
1069         hdev->open     = btusb_open;
1070         hdev->close    = btusb_close;
1071         hdev->flush    = btusb_flush;
1072         hdev->send     = btusb_send_frame;
1073         hdev->destruct = btusb_destruct;
1074         hdev->notify   = btusb_notify;
1075
1076         hdev->owner = THIS_MODULE;
1077
1078         if (id->driver_info & BTUSB_INTEL_BOOT)
1079                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1080
1081         /* Interface numbers are hardcoded in the specification */
1082         data->isoc = usb_ifnum_to_if(data->udev, 1);
1083
1084         if (!reset)
1085                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1086
1087         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1088                 if (!disable_scofix)
1089                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1090         }
1091
1092         if (id->driver_info & BTUSB_BROKEN_ISOC)
1093                 data->isoc = NULL;
1094
1095         if (id->driver_info & BTUSB_DIGIANSWER) {
1096                 data->cmdreq_type = USB_TYPE_VENDOR;
1097                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1098         }
1099
1100         if (id->driver_info & BTUSB_CSR) {
1101                 struct usb_device *udev = data->udev;
1102
1103                 /* Old firmware would otherwise execute USB reset */
1104                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1105                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1106         }
1107
1108         if (id->driver_info & BTUSB_SNIFFER) {
1109                 struct usb_device *udev = data->udev;
1110
1111                 /* New sniffer firmware has crippled HCI interface */
1112                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1113                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1114
1115                 data->isoc = NULL;
1116         }
1117
1118         if (id->driver_info & BTUSB_BCM92035) {
1119                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1120                 struct sk_buff *skb;
1121
1122                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1123                 if (skb) {
1124                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1125                         skb_queue_tail(&hdev->driver_init, skb);
1126                 }
1127         }
1128
1129         if (data->isoc) {
1130                 err = usb_driver_claim_interface(&btusb_driver,
1131                                                         data->isoc, data);
1132                 if (err < 0) {
1133                         hci_free_dev(hdev);
1134                         kfree(data);
1135                         return err;
1136                 }
1137         }
1138
1139         err = hci_register_dev(hdev);
1140         if (err < 0) {
1141                 hci_free_dev(hdev);
1142                 kfree(data);
1143                 return err;
1144         }
1145
1146         usb_set_intfdata(intf, data);
1147
1148         return 0;
1149 }
1150
1151 static void btusb_disconnect(struct usb_interface *intf)
1152 {
1153         struct btusb_data *data = usb_get_intfdata(intf);
1154         struct hci_dev *hdev;
1155
1156         BT_DBG("intf %p", intf);
1157
1158         if (!data)
1159                 return;
1160
1161         hdev = data->hdev;
1162
1163         __hci_dev_hold(hdev);
1164
1165         usb_set_intfdata(data->intf, NULL);
1166
1167         if (data->isoc)
1168                 usb_set_intfdata(data->isoc, NULL);
1169
1170         hci_unregister_dev(hdev);
1171
1172         if (intf == data->isoc)
1173                 usb_driver_release_interface(&btusb_driver, data->intf);
1174         else if (data->isoc)
1175                 usb_driver_release_interface(&btusb_driver, data->isoc);
1176
1177         __hci_dev_put(hdev);
1178
1179         hci_free_dev(hdev);
1180 }
1181
1182 #ifdef CONFIG_PM
1183 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1184 {
1185         struct btusb_data *data = usb_get_intfdata(intf);
1186
1187         BT_DBG("intf %p", intf);
1188
1189         if (data->suspend_count++)
1190                 return 0;
1191
1192         spin_lock_irq(&data->txlock);
1193         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1194                 set_bit(BTUSB_SUSPENDING, &data->flags);
1195                 spin_unlock_irq(&data->txlock);
1196         } else {
1197                 spin_unlock_irq(&data->txlock);
1198                 data->suspend_count--;
1199                 return -EBUSY;
1200         }
1201
1202         cancel_work_sync(&data->work);
1203
1204         btusb_stop_traffic(data);
1205         usb_kill_anchored_urbs(&data->tx_anchor);
1206
1207         return 0;
1208 }
1209
1210 static void play_deferred(struct btusb_data *data)
1211 {
1212         struct urb *urb;
1213         int err;
1214
1215         while ((urb = usb_get_from_anchor(&data->deferred))) {
1216                 err = usb_submit_urb(urb, GFP_ATOMIC);
1217                 if (err < 0)
1218                         break;
1219
1220                 data->tx_in_flight++;
1221         }
1222         usb_scuttle_anchored_urbs(&data->deferred);
1223 }
1224
1225 static int btusb_resume(struct usb_interface *intf)
1226 {
1227         struct btusb_data *data = usb_get_intfdata(intf);
1228         struct hci_dev *hdev = data->hdev;
1229         int err = 0;
1230
1231         BT_DBG("intf %p", intf);
1232
1233         if (--data->suspend_count)
1234                 return 0;
1235
1236         if (!test_bit(HCI_RUNNING, &hdev->flags))
1237                 goto done;
1238
1239         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1240                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1241                 if (err < 0) {
1242                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1243                         goto failed;
1244                 }
1245         }
1246
1247         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1248                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1249                 if (err < 0) {
1250                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1251                         goto failed;
1252                 }
1253
1254                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1255         }
1256
1257         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1258                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1259                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1260                 else
1261                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1262         }
1263
1264         spin_lock_irq(&data->txlock);
1265         play_deferred(data);
1266         clear_bit(BTUSB_SUSPENDING, &data->flags);
1267         spin_unlock_irq(&data->txlock);
1268         schedule_work(&data->work);
1269
1270         return 0;
1271
1272 failed:
1273         usb_scuttle_anchored_urbs(&data->deferred);
1274 done:
1275         spin_lock_irq(&data->txlock);
1276         clear_bit(BTUSB_SUSPENDING, &data->flags);
1277         spin_unlock_irq(&data->txlock);
1278
1279         return err;
1280 }
1281 #endif
1282
1283 static struct usb_driver btusb_driver = {
1284         .name           = "btusb",
1285         .probe          = btusb_probe,
1286         .disconnect     = btusb_disconnect,
1287 #ifdef CONFIG_PM
1288         .suspend        = btusb_suspend,
1289         .resume         = btusb_resume,
1290 #endif
1291         .id_table       = btusb_table,
1292         .supports_autosuspend = 1,
1293 };
1294
1295 static int __init btusb_init(void)
1296 {
1297         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1298
1299         return usb_register(&btusb_driver);
1300 }
1301
1302 static void __exit btusb_exit(void)
1303 {
1304         usb_deregister(&btusb_driver);
1305 }
1306
1307 module_init(btusb_init);
1308 module_exit(btusb_exit);
1309
1310 module_param(ignore_dga, bool, 0644);
1311 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1312
1313 module_param(ignore_csr, bool, 0644);
1314 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1315
1316 module_param(ignore_sniffer, bool, 0644);
1317 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1318
1319 module_param(disable_scofix, bool, 0644);
1320 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1321
1322 module_param(force_scofix, bool, 0644);
1323 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1324
1325 module_param(reset, bool, 0644);
1326 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1327
1328 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1329 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1330 MODULE_VERSION(VERSION);
1331 MODULE_LICENSE("GPL");