Bluetooth: Add support for Acer [13D3:3432]
[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         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
188
189         /* Atheros AR5BBU12 with sflash firmware */
190         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
191
192         /* Atheros AR5BBU12 with sflash firmware */
193         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
194         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
195
196         /* Broadcom BCM2035 */
197         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
198         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
199         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
200
201         /* Broadcom BCM2045 */
202         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
203         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
204
205         /* IBM/Lenovo ThinkPad with Broadcom chip */
206         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
207         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
208
209         /* HP laptop with Broadcom chip */
210         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
211
212         /* Dell laptop with Broadcom chip */
213         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
214
215         /* Dell Wireless 370 and 410 devices */
216         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
217         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
218
219         /* Belkin F8T012 and F8T013 devices */
220         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
221         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
222
223         /* Asus WL-BTD202 device */
224         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
225
226         /* Kensington Bluetooth USB adapter */
227         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
228
229         /* RTX Telecom based adapters with buggy SCO support */
230         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
231         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
232
233         /* CONWISE Technology based adapters with buggy SCO support */
234         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
235
236         /* Digianswer devices */
237         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
238         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
239
240         /* CSR BlueCore Bluetooth Sniffer */
241         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
242
243         /* Frontline ComProbe Bluetooth Sniffer */
244         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
245
246         { }     /* Terminating entry */
247 };
248
249 #define BTUSB_MAX_ISOC_FRAMES   10
250
251 #define BTUSB_INTR_RUNNING      0
252 #define BTUSB_BULK_RUNNING      1
253 #define BTUSB_ISOC_RUNNING      2
254 #define BTUSB_SUSPENDING        3
255 #define BTUSB_DID_ISO_RESUME    4
256
257 struct btusb_data {
258         struct hci_dev       *hdev;
259         struct usb_device    *udev;
260         struct usb_interface *intf;
261         struct usb_interface *isoc;
262
263         spinlock_t lock;
264
265         unsigned long flags;
266
267         struct work_struct work;
268         struct work_struct waker;
269
270         struct usb_anchor tx_anchor;
271         struct usb_anchor intr_anchor;
272         struct usb_anchor bulk_anchor;
273         struct usb_anchor isoc_anchor;
274         struct usb_anchor deferred;
275         int tx_in_flight;
276         spinlock_t txlock;
277
278         struct usb_endpoint_descriptor *intr_ep;
279         struct usb_endpoint_descriptor *bulk_tx_ep;
280         struct usb_endpoint_descriptor *bulk_rx_ep;
281         struct usb_endpoint_descriptor *isoc_tx_ep;
282         struct usb_endpoint_descriptor *isoc_rx_ep;
283
284         __u8 cmdreq_type;
285
286         unsigned int sco_num;
287         int isoc_altsetting;
288         int suspend_count;
289 };
290
291 static int inc_tx(struct btusb_data *data)
292 {
293         unsigned long flags;
294         int rv;
295
296         spin_lock_irqsave(&data->txlock, flags);
297         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
298         if (!rv)
299                 data->tx_in_flight++;
300         spin_unlock_irqrestore(&data->txlock, flags);
301
302         return rv;
303 }
304
305 static void btusb_intr_complete(struct urb *urb)
306 {
307         struct hci_dev *hdev = urb->context;
308         struct btusb_data *data = hdev->driver_data;
309         int err;
310
311         BT_DBG("%s urb %p status %d count %d", hdev->name,
312                                         urb, urb->status, urb->actual_length);
313
314         if (!test_bit(HCI_RUNNING, &hdev->flags))
315                 return;
316
317         if (urb->status == 0) {
318                 hdev->stat.byte_rx += urb->actual_length;
319
320                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
321                                                 urb->transfer_buffer,
322                                                 urb->actual_length) < 0) {
323                         BT_ERR("%s corrupted event packet", hdev->name);
324                         hdev->stat.err_rx++;
325                 }
326         } else if (urb->status == -ENOENT) {
327                 /* Avoid suspend failed when usb_kill_urb */
328                 return;
329         }
330
331         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
332                 return;
333
334         usb_mark_last_busy(data->udev);
335         usb_anchor_urb(urb, &data->intr_anchor);
336
337         err = usb_submit_urb(urb, GFP_ATOMIC);
338         if (err < 0) {
339                 /* -EPERM: urb is being killed;
340                  * -ENODEV: device got disconnected */
341                 if (err != -EPERM && err != -ENODEV)
342                         BT_ERR("%s urb %p failed to resubmit (%d)",
343                                                 hdev->name, urb, -err);
344                 usb_unanchor_urb(urb);
345         }
346 }
347
348 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
349 {
350         struct btusb_data *data = hdev->driver_data;
351         struct urb *urb;
352         unsigned char *buf;
353         unsigned int pipe;
354         int err, size;
355
356         BT_DBG("%s", hdev->name);
357
358         if (!data->intr_ep)
359                 return -ENODEV;
360
361         urb = usb_alloc_urb(0, mem_flags);
362         if (!urb)
363                 return -ENOMEM;
364
365         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
366
367         buf = kmalloc(size, mem_flags);
368         if (!buf) {
369                 usb_free_urb(urb);
370                 return -ENOMEM;
371         }
372
373         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
374
375         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
376                                                 btusb_intr_complete, hdev,
377                                                 data->intr_ep->bInterval);
378
379         urb->transfer_flags |= URB_FREE_BUFFER;
380
381         usb_anchor_urb(urb, &data->intr_anchor);
382
383         err = usb_submit_urb(urb, mem_flags);
384         if (err < 0) {
385                 BT_ERR("%s urb %p submission failed (%d)",
386                                                 hdev->name, urb, -err);
387                 usb_unanchor_urb(urb);
388         }
389
390         usb_free_urb(urb);
391
392         return err;
393 }
394
395 static void btusb_bulk_complete(struct urb *urb)
396 {
397         struct hci_dev *hdev = urb->context;
398         struct btusb_data *data = hdev->driver_data;
399         int err;
400
401         BT_DBG("%s urb %p status %d count %d", hdev->name,
402                                         urb, urb->status, urb->actual_length);
403
404         if (!test_bit(HCI_RUNNING, &hdev->flags))
405                 return;
406
407         if (urb->status == 0) {
408                 hdev->stat.byte_rx += urb->actual_length;
409
410                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
411                                                 urb->transfer_buffer,
412                                                 urb->actual_length) < 0) {
413                         BT_ERR("%s corrupted ACL packet", hdev->name);
414                         hdev->stat.err_rx++;
415                 }
416         } else if (urb->status == -ENOENT) {
417                 /* Avoid suspend failed when usb_kill_urb */
418                 return;
419         }
420
421         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
422                 return;
423
424         usb_anchor_urb(urb, &data->bulk_anchor);
425         usb_mark_last_busy(data->udev);
426
427         err = usb_submit_urb(urb, GFP_ATOMIC);
428         if (err < 0) {
429                 /* -EPERM: urb is being killed;
430                  * -ENODEV: device got disconnected */
431                 if (err != -EPERM && err != -ENODEV)
432                         BT_ERR("%s urb %p failed to resubmit (%d)",
433                                                 hdev->name, urb, -err);
434                 usb_unanchor_urb(urb);
435         }
436 }
437
438 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
439 {
440         struct btusb_data *data = hdev->driver_data;
441         struct urb *urb;
442         unsigned char *buf;
443         unsigned int pipe;
444         int err, size = HCI_MAX_FRAME_SIZE;
445
446         BT_DBG("%s", hdev->name);
447
448         if (!data->bulk_rx_ep)
449                 return -ENODEV;
450
451         urb = usb_alloc_urb(0, mem_flags);
452         if (!urb)
453                 return -ENOMEM;
454
455         buf = kmalloc(size, mem_flags);
456         if (!buf) {
457                 usb_free_urb(urb);
458                 return -ENOMEM;
459         }
460
461         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
462
463         usb_fill_bulk_urb(urb, data->udev, pipe,
464                                         buf, size, btusb_bulk_complete, hdev);
465
466         urb->transfer_flags |= URB_FREE_BUFFER;
467
468         usb_mark_last_busy(data->udev);
469         usb_anchor_urb(urb, &data->bulk_anchor);
470
471         err = usb_submit_urb(urb, mem_flags);
472         if (err < 0) {
473                 BT_ERR("%s urb %p submission failed (%d)",
474                                                 hdev->name, urb, -err);
475                 usb_unanchor_urb(urb);
476         }
477
478         usb_free_urb(urb);
479
480         return err;
481 }
482
483 static void btusb_isoc_complete(struct urb *urb)
484 {
485         struct hci_dev *hdev = urb->context;
486         struct btusb_data *data = hdev->driver_data;
487         int i, err;
488
489         BT_DBG("%s urb %p status %d count %d", hdev->name,
490                                         urb, urb->status, urb->actual_length);
491
492         if (!test_bit(HCI_RUNNING, &hdev->flags))
493                 return;
494
495         if (urb->status == 0) {
496                 for (i = 0; i < urb->number_of_packets; i++) {
497                         unsigned int offset = urb->iso_frame_desc[i].offset;
498                         unsigned int length = urb->iso_frame_desc[i].actual_length;
499
500                         if (urb->iso_frame_desc[i].status)
501                                 continue;
502
503                         hdev->stat.byte_rx += length;
504
505                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
506                                                 urb->transfer_buffer + offset,
507                                                                 length) < 0) {
508                                 BT_ERR("%s corrupted SCO packet", hdev->name);
509                                 hdev->stat.err_rx++;
510                         }
511                 }
512         } else if (urb->status == -ENOENT) {
513                 /* Avoid suspend failed when usb_kill_urb */
514                 return;
515         }
516
517         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
518                 return;
519
520         usb_anchor_urb(urb, &data->isoc_anchor);
521
522         err = usb_submit_urb(urb, GFP_ATOMIC);
523         if (err < 0) {
524                 /* -EPERM: urb is being killed;
525                  * -ENODEV: device got disconnected */
526                 if (err != -EPERM && err != -ENODEV)
527                         BT_ERR("%s urb %p failed to resubmit (%d)",
528                                                 hdev->name, urb, -err);
529                 usb_unanchor_urb(urb);
530         }
531 }
532
533 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
534 {
535         int i, offset = 0;
536
537         BT_DBG("len %d mtu %d", len, mtu);
538
539         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
540                                         i++, offset += mtu, len -= mtu) {
541                 urb->iso_frame_desc[i].offset = offset;
542                 urb->iso_frame_desc[i].length = mtu;
543         }
544
545         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
546                 urb->iso_frame_desc[i].offset = offset;
547                 urb->iso_frame_desc[i].length = len;
548                 i++;
549         }
550
551         urb->number_of_packets = i;
552 }
553
554 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
555 {
556         struct btusb_data *data = hdev->driver_data;
557         struct urb *urb;
558         unsigned char *buf;
559         unsigned int pipe;
560         int err, size;
561
562         BT_DBG("%s", hdev->name);
563
564         if (!data->isoc_rx_ep)
565                 return -ENODEV;
566
567         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
568         if (!urb)
569                 return -ENOMEM;
570
571         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
572                                                 BTUSB_MAX_ISOC_FRAMES;
573
574         buf = kmalloc(size, mem_flags);
575         if (!buf) {
576                 usb_free_urb(urb);
577                 return -ENOMEM;
578         }
579
580         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
581
582         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
583                                 hdev, data->isoc_rx_ep->bInterval);
584
585         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
586
587         __fill_isoc_descriptor(urb, size,
588                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
589
590         usb_anchor_urb(urb, &data->isoc_anchor);
591
592         err = usb_submit_urb(urb, mem_flags);
593         if (err < 0) {
594                 BT_ERR("%s urb %p submission failed (%d)",
595                                                 hdev->name, urb, -err);
596                 usb_unanchor_urb(urb);
597         }
598
599         usb_free_urb(urb);
600
601         return err;
602 }
603
604 static void btusb_tx_complete(struct urb *urb)
605 {
606         struct sk_buff *skb = urb->context;
607         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
608         struct btusb_data *data = hdev->driver_data;
609
610         BT_DBG("%s urb %p status %d count %d", hdev->name,
611                                         urb, urb->status, urb->actual_length);
612
613         if (!test_bit(HCI_RUNNING, &hdev->flags))
614                 goto done;
615
616         if (!urb->status)
617                 hdev->stat.byte_tx += urb->transfer_buffer_length;
618         else
619                 hdev->stat.err_tx++;
620
621 done:
622         spin_lock(&data->txlock);
623         data->tx_in_flight--;
624         spin_unlock(&data->txlock);
625
626         kfree(urb->setup_packet);
627
628         kfree_skb(skb);
629 }
630
631 static void btusb_isoc_tx_complete(struct urb *urb)
632 {
633         struct sk_buff *skb = urb->context;
634         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
635
636         BT_DBG("%s urb %p status %d count %d", hdev->name,
637                                         urb, urb->status, urb->actual_length);
638
639         if (!test_bit(HCI_RUNNING, &hdev->flags))
640                 goto done;
641
642         if (!urb->status)
643                 hdev->stat.byte_tx += urb->transfer_buffer_length;
644         else
645                 hdev->stat.err_tx++;
646
647 done:
648         kfree(urb->setup_packet);
649
650         kfree_skb(skb);
651 }
652
653 static int btusb_open(struct hci_dev *hdev)
654 {
655         struct btusb_data *data = hdev->driver_data;
656         int err;
657
658         BT_DBG("%s", hdev->name);
659
660         err = usb_autopm_get_interface(data->intf);
661         if (err < 0)
662                 return err;
663
664         data->intf->needs_remote_wakeup = 1;
665
666         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
667                 goto done;
668
669         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
670                 goto done;
671
672         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
673         if (err < 0)
674                 goto failed;
675
676         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
677         if (err < 0) {
678                 usb_kill_anchored_urbs(&data->intr_anchor);
679                 goto failed;
680         }
681
682         set_bit(BTUSB_BULK_RUNNING, &data->flags);
683         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
684
685 done:
686         usb_autopm_put_interface(data->intf);
687         return 0;
688
689 failed:
690         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
691         clear_bit(HCI_RUNNING, &hdev->flags);
692         usb_autopm_put_interface(data->intf);
693         return err;
694 }
695
696 static void btusb_stop_traffic(struct btusb_data *data)
697 {
698         usb_kill_anchored_urbs(&data->intr_anchor);
699         usb_kill_anchored_urbs(&data->bulk_anchor);
700         usb_kill_anchored_urbs(&data->isoc_anchor);
701 }
702
703 static int btusb_close(struct hci_dev *hdev)
704 {
705         struct btusb_data *data = hdev->driver_data;
706         int err;
707
708         BT_DBG("%s", hdev->name);
709
710         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
711                 return 0;
712
713         cancel_work_sync(&data->work);
714         cancel_work_sync(&data->waker);
715
716         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
717         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
718         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
719
720         btusb_stop_traffic(data);
721         err = usb_autopm_get_interface(data->intf);
722         if (err < 0)
723                 goto failed;
724
725         data->intf->needs_remote_wakeup = 0;
726         usb_autopm_put_interface(data->intf);
727
728 failed:
729         usb_scuttle_anchored_urbs(&data->deferred);
730         return 0;
731 }
732
733 static int btusb_flush(struct hci_dev *hdev)
734 {
735         struct btusb_data *data = hdev->driver_data;
736
737         BT_DBG("%s", hdev->name);
738
739         usb_kill_anchored_urbs(&data->tx_anchor);
740
741         return 0;
742 }
743
744 static int btusb_send_frame(struct sk_buff *skb)
745 {
746         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
747         struct btusb_data *data = hdev->driver_data;
748         struct usb_ctrlrequest *dr;
749         struct urb *urb;
750         unsigned int pipe;
751         int err;
752
753         BT_DBG("%s", hdev->name);
754
755         if (!test_bit(HCI_RUNNING, &hdev->flags))
756                 return -EBUSY;
757
758         switch (bt_cb(skb)->pkt_type) {
759         case HCI_COMMAND_PKT:
760                 urb = usb_alloc_urb(0, GFP_ATOMIC);
761                 if (!urb)
762                         return -ENOMEM;
763
764                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
765                 if (!dr) {
766                         usb_free_urb(urb);
767                         return -ENOMEM;
768                 }
769
770                 dr->bRequestType = data->cmdreq_type;
771                 dr->bRequest     = 0;
772                 dr->wIndex       = 0;
773                 dr->wValue       = 0;
774                 dr->wLength      = __cpu_to_le16(skb->len);
775
776                 pipe = usb_sndctrlpipe(data->udev, 0x00);
777
778                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
779                                 skb->data, skb->len, btusb_tx_complete, skb);
780
781                 hdev->stat.cmd_tx++;
782                 break;
783
784         case HCI_ACLDATA_PKT:
785                 if (!data->bulk_tx_ep)
786                         return -ENODEV;
787
788                 urb = usb_alloc_urb(0, GFP_ATOMIC);
789                 if (!urb)
790                         return -ENOMEM;
791
792                 pipe = usb_sndbulkpipe(data->udev,
793                                         data->bulk_tx_ep->bEndpointAddress);
794
795                 usb_fill_bulk_urb(urb, data->udev, pipe,
796                                 skb->data, skb->len, btusb_tx_complete, skb);
797
798                 hdev->stat.acl_tx++;
799                 break;
800
801         case HCI_SCODATA_PKT:
802                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
803                         return -ENODEV;
804
805                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
806                 if (!urb)
807                         return -ENOMEM;
808
809                 pipe = usb_sndisocpipe(data->udev,
810                                         data->isoc_tx_ep->bEndpointAddress);
811
812                 usb_fill_int_urb(urb, data->udev, pipe,
813                                 skb->data, skb->len, btusb_isoc_tx_complete,
814                                 skb, data->isoc_tx_ep->bInterval);
815
816                 urb->transfer_flags  = URB_ISO_ASAP;
817
818                 __fill_isoc_descriptor(urb, skb->len,
819                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
820
821                 hdev->stat.sco_tx++;
822                 goto skip_waking;
823
824         default:
825                 return -EILSEQ;
826         }
827
828         err = inc_tx(data);
829         if (err) {
830                 usb_anchor_urb(urb, &data->deferred);
831                 schedule_work(&data->waker);
832                 err = 0;
833                 goto done;
834         }
835
836 skip_waking:
837         usb_anchor_urb(urb, &data->tx_anchor);
838
839         err = usb_submit_urb(urb, GFP_ATOMIC);
840         if (err < 0) {
841                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
842                 kfree(urb->setup_packet);
843                 usb_unanchor_urb(urb);
844         } else {
845                 usb_mark_last_busy(data->udev);
846         }
847
848 done:
849         usb_free_urb(urb);
850         return err;
851 }
852
853 static void btusb_destruct(struct hci_dev *hdev)
854 {
855         struct btusb_data *data = hdev->driver_data;
856
857         BT_DBG("%s", hdev->name);
858
859         kfree(data);
860 }
861
862 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
863 {
864         struct btusb_data *data = hdev->driver_data;
865
866         BT_DBG("%s evt %d", hdev->name, evt);
867
868         if (hdev->conn_hash.sco_num != data->sco_num) {
869                 data->sco_num = hdev->conn_hash.sco_num;
870                 schedule_work(&data->work);
871         }
872 }
873
874 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
875 {
876         struct btusb_data *data = hdev->driver_data;
877         struct usb_interface *intf = data->isoc;
878         struct usb_endpoint_descriptor *ep_desc;
879         int i, err;
880
881         if (!data->isoc)
882                 return -ENODEV;
883
884         err = usb_set_interface(data->udev, 1, altsetting);
885         if (err < 0) {
886                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
887                 return err;
888         }
889
890         data->isoc_altsetting = altsetting;
891
892         data->isoc_tx_ep = NULL;
893         data->isoc_rx_ep = NULL;
894
895         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
896                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
897
898                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
899                         data->isoc_tx_ep = ep_desc;
900                         continue;
901                 }
902
903                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
904                         data->isoc_rx_ep = ep_desc;
905                         continue;
906                 }
907         }
908
909         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
910                 BT_ERR("%s invalid SCO descriptors", hdev->name);
911                 return -ENODEV;
912         }
913
914         return 0;
915 }
916
917 static void btusb_work(struct work_struct *work)
918 {
919         struct btusb_data *data = container_of(work, struct btusb_data, work);
920         struct hci_dev *hdev = data->hdev;
921         int err;
922
923         if (hdev->conn_hash.sco_num > 0) {
924                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
925                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
926                         if (err < 0) {
927                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
928                                 usb_kill_anchored_urbs(&data->isoc_anchor);
929                                 return;
930                         }
931
932                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
933                 }
934                 if (data->isoc_altsetting != 2) {
935                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
936                         usb_kill_anchored_urbs(&data->isoc_anchor);
937
938                         if (__set_isoc_interface(hdev, 2) < 0)
939                                 return;
940                 }
941
942                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
943                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
944                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
945                         else
946                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
947                 }
948         } else {
949                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
950                 usb_kill_anchored_urbs(&data->isoc_anchor);
951
952                 __set_isoc_interface(hdev, 0);
953                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
954                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
955         }
956 }
957
958 static void btusb_waker(struct work_struct *work)
959 {
960         struct btusb_data *data = container_of(work, struct btusb_data, waker);
961         int err;
962
963         err = usb_autopm_get_interface(data->intf);
964         if (err < 0)
965                 return;
966
967         usb_autopm_put_interface(data->intf);
968 }
969
970 static int btusb_probe(struct usb_interface *intf,
971                                 const struct usb_device_id *id)
972 {
973         struct usb_endpoint_descriptor *ep_desc;
974         struct btusb_data *data;
975         struct hci_dev *hdev;
976         int i, err;
977
978         BT_DBG("intf %p id %p", intf, id);
979
980         /* interface numbers are hardcoded in the spec */
981         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
982                 return -ENODEV;
983
984         if (!id->driver_info) {
985                 const struct usb_device_id *match;
986                 match = usb_match_id(intf, blacklist_table);
987                 if (match)
988                         id = match;
989         }
990
991         if (id->driver_info == BTUSB_IGNORE)
992                 return -ENODEV;
993
994         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
995                 return -ENODEV;
996
997         if (ignore_csr && id->driver_info & BTUSB_CSR)
998                 return -ENODEV;
999
1000         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1001                 return -ENODEV;
1002
1003         if (id->driver_info & BTUSB_ATH3012) {
1004                 struct usb_device *udev = interface_to_usbdev(intf);
1005
1006                 /* Old firmware would otherwise let ath3k driver load
1007                  * patch and sysconfig files */
1008                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1009                         return -ENODEV;
1010         }
1011
1012         data = kzalloc(sizeof(*data), GFP_KERNEL);
1013         if (!data)
1014                 return -ENOMEM;
1015
1016         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1017                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1018
1019                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1020                         data->intr_ep = ep_desc;
1021                         continue;
1022                 }
1023
1024                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1025                         data->bulk_tx_ep = ep_desc;
1026                         continue;
1027                 }
1028
1029                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1030                         data->bulk_rx_ep = ep_desc;
1031                         continue;
1032                 }
1033         }
1034
1035         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1036                 kfree(data);
1037                 return -ENODEV;
1038         }
1039
1040         data->cmdreq_type = USB_TYPE_CLASS;
1041
1042         data->udev = interface_to_usbdev(intf);
1043         data->intf = intf;
1044
1045         spin_lock_init(&data->lock);
1046
1047         INIT_WORK(&data->work, btusb_work);
1048         INIT_WORK(&data->waker, btusb_waker);
1049         spin_lock_init(&data->txlock);
1050
1051         init_usb_anchor(&data->tx_anchor);
1052         init_usb_anchor(&data->intr_anchor);
1053         init_usb_anchor(&data->bulk_anchor);
1054         init_usb_anchor(&data->isoc_anchor);
1055         init_usb_anchor(&data->deferred);
1056
1057         hdev = hci_alloc_dev();
1058         if (!hdev) {
1059                 kfree(data);
1060                 return -ENOMEM;
1061         }
1062
1063         hdev->bus = HCI_USB;
1064         hdev->driver_data = data;
1065
1066         data->hdev = hdev;
1067
1068         SET_HCIDEV_DEV(hdev, &intf->dev);
1069
1070         hdev->open     = btusb_open;
1071         hdev->close    = btusb_close;
1072         hdev->flush    = btusb_flush;
1073         hdev->send     = btusb_send_frame;
1074         hdev->destruct = btusb_destruct;
1075         hdev->notify   = btusb_notify;
1076
1077         hdev->owner = THIS_MODULE;
1078
1079         if (id->driver_info & BTUSB_INTEL_BOOT)
1080                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1081
1082         /* Interface numbers are hardcoded in the specification */
1083         data->isoc = usb_ifnum_to_if(data->udev, 1);
1084
1085         if (!reset)
1086                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1087
1088         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1089                 if (!disable_scofix)
1090                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1091         }
1092
1093         if (id->driver_info & BTUSB_BROKEN_ISOC)
1094                 data->isoc = NULL;
1095
1096         if (id->driver_info & BTUSB_DIGIANSWER) {
1097                 data->cmdreq_type = USB_TYPE_VENDOR;
1098                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1099         }
1100
1101         if (id->driver_info & BTUSB_CSR) {
1102                 struct usb_device *udev = data->udev;
1103
1104                 /* Old firmware would otherwise execute USB reset */
1105                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1106                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1107         }
1108
1109         if (id->driver_info & BTUSB_SNIFFER) {
1110                 struct usb_device *udev = data->udev;
1111
1112                 /* New sniffer firmware has crippled HCI interface */
1113                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1114                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1115
1116                 data->isoc = NULL;
1117         }
1118
1119         if (id->driver_info & BTUSB_BCM92035) {
1120                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1121                 struct sk_buff *skb;
1122
1123                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1124                 if (skb) {
1125                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1126                         skb_queue_tail(&hdev->driver_init, skb);
1127                 }
1128         }
1129
1130         if (data->isoc) {
1131                 err = usb_driver_claim_interface(&btusb_driver,
1132                                                         data->isoc, data);
1133                 if (err < 0) {
1134                         hci_free_dev(hdev);
1135                         kfree(data);
1136                         return err;
1137                 }
1138         }
1139
1140         err = hci_register_dev(hdev);
1141         if (err < 0) {
1142                 hci_free_dev(hdev);
1143                 kfree(data);
1144                 return err;
1145         }
1146
1147         usb_set_intfdata(intf, data);
1148
1149         return 0;
1150 }
1151
1152 static void btusb_disconnect(struct usb_interface *intf)
1153 {
1154         struct btusb_data *data = usb_get_intfdata(intf);
1155         struct hci_dev *hdev;
1156
1157         BT_DBG("intf %p", intf);
1158
1159         if (!data)
1160                 return;
1161
1162         hdev = data->hdev;
1163
1164         __hci_dev_hold(hdev);
1165
1166         usb_set_intfdata(data->intf, NULL);
1167
1168         if (data->isoc)
1169                 usb_set_intfdata(data->isoc, NULL);
1170
1171         hci_unregister_dev(hdev);
1172
1173         if (intf == data->isoc)
1174                 usb_driver_release_interface(&btusb_driver, data->intf);
1175         else if (data->isoc)
1176                 usb_driver_release_interface(&btusb_driver, data->isoc);
1177
1178         __hci_dev_put(hdev);
1179
1180         hci_free_dev(hdev);
1181 }
1182
1183 #ifdef CONFIG_PM
1184 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1185 {
1186         struct btusb_data *data = usb_get_intfdata(intf);
1187
1188         BT_DBG("intf %p", intf);
1189
1190         if (data->suspend_count++)
1191                 return 0;
1192
1193         spin_lock_irq(&data->txlock);
1194         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1195                 set_bit(BTUSB_SUSPENDING, &data->flags);
1196                 spin_unlock_irq(&data->txlock);
1197         } else {
1198                 spin_unlock_irq(&data->txlock);
1199                 data->suspend_count--;
1200                 return -EBUSY;
1201         }
1202
1203         cancel_work_sync(&data->work);
1204
1205         btusb_stop_traffic(data);
1206         usb_kill_anchored_urbs(&data->tx_anchor);
1207
1208         return 0;
1209 }
1210
1211 static void play_deferred(struct btusb_data *data)
1212 {
1213         struct urb *urb;
1214         int err;
1215
1216         while ((urb = usb_get_from_anchor(&data->deferred))) {
1217                 err = usb_submit_urb(urb, GFP_ATOMIC);
1218                 if (err < 0)
1219                         break;
1220
1221                 data->tx_in_flight++;
1222         }
1223         usb_scuttle_anchored_urbs(&data->deferred);
1224 }
1225
1226 static int btusb_resume(struct usb_interface *intf)
1227 {
1228         struct btusb_data *data = usb_get_intfdata(intf);
1229         struct hci_dev *hdev = data->hdev;
1230         int err = 0;
1231
1232         BT_DBG("intf %p", intf);
1233
1234         if (--data->suspend_count)
1235                 return 0;
1236
1237         if (!test_bit(HCI_RUNNING, &hdev->flags))
1238                 goto done;
1239
1240         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1241                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1242                 if (err < 0) {
1243                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1244                         goto failed;
1245                 }
1246         }
1247
1248         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1249                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1250                 if (err < 0) {
1251                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1252                         goto failed;
1253                 }
1254
1255                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1256         }
1257
1258         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1259                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1260                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1261                 else
1262                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1263         }
1264
1265         spin_lock_irq(&data->txlock);
1266         play_deferred(data);
1267         clear_bit(BTUSB_SUSPENDING, &data->flags);
1268         spin_unlock_irq(&data->txlock);
1269         schedule_work(&data->work);
1270
1271         return 0;
1272
1273 failed:
1274         usb_scuttle_anchored_urbs(&data->deferred);
1275 done:
1276         spin_lock_irq(&data->txlock);
1277         clear_bit(BTUSB_SUSPENDING, &data->flags);
1278         spin_unlock_irq(&data->txlock);
1279
1280         return err;
1281 }
1282 #endif
1283
1284 static struct usb_driver btusb_driver = {
1285         .name           = "btusb",
1286         .probe          = btusb_probe,
1287         .disconnect     = btusb_disconnect,
1288 #ifdef CONFIG_PM
1289         .suspend        = btusb_suspend,
1290         .resume         = btusb_resume,
1291 #endif
1292         .id_table       = btusb_table,
1293         .supports_autosuspend = 1,
1294 };
1295
1296 static int __init btusb_init(void)
1297 {
1298         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1299
1300         return usb_register(&btusb_driver);
1301 }
1302
1303 static void __exit btusb_exit(void)
1304 {
1305         usb_deregister(&btusb_driver);
1306 }
1307
1308 module_init(btusb_init);
1309 module_exit(btusb_exit);
1310
1311 module_param(ignore_dga, bool, 0644);
1312 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1313
1314 module_param(ignore_csr, bool, 0644);
1315 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1316
1317 module_param(ignore_sniffer, bool, 0644);
1318 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1319
1320 module_param(disable_scofix, bool, 0644);
1321 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1322
1323 module_param(force_scofix, bool, 0644);
1324 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1325
1326 module_param(reset, bool, 0644);
1327 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1328
1329 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1330 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1331 MODULE_VERSION(VERSION);
1332 MODULE_LICENSE("GPL");