Bluetooth: Add support for Broadcom device of Asus Z97-DELUXE motherboard
[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         /* ASUSTek Computer - Broadcom based */
124         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
125
126         /* Belkin F8065bf - Broadcom based */
127         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
128
129         /* IMC Networks - Broadcom based */
130         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
131
132         /* Intel Bluetooth USB Bootloader (RAM module) */
133         { USB_DEVICE(0x8087, 0x0a5a),
134           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
135
136         { }     /* Terminating entry */
137 };
138
139 MODULE_DEVICE_TABLE(usb, btusb_table);
140
141 static struct usb_device_id blacklist_table[] = {
142         /* CSR BlueCore devices */
143         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
144
145         /* Broadcom BCM2033 without firmware */
146         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
147
148         /* Atheros 3011 with sflash firmware */
149         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
150         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
151         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
152         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
153         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
154         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
155
156         /* Atheros AR9285 Malbec with sflash firmware */
157         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
158
159         /* Atheros 3012 with sflash firmware */
160         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
161         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
162         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
163         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
164         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
165         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
166         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
167         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
168         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
169         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
170         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
171         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
172         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
173         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
174         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
175         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
176         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
177         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
178         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
179         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
180         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
181         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
182         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
183         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
184         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
185         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
186         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
187         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
188         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
189         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
190         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
191
192         /* Atheros AR5BBU12 with sflash firmware */
193         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
194
195         /* Atheros AR5BBU12 with sflash firmware */
196         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
197         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
198
199         /* Broadcom BCM2035 */
200         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
201         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
202         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
203
204         /* Broadcom BCM2045 */
205         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
206         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
207
208         /* IBM/Lenovo ThinkPad with Broadcom chip */
209         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
210         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
211
212         /* HP laptop with Broadcom chip */
213         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
214
215         /* Dell laptop with Broadcom chip */
216         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
217
218         /* Dell Wireless 370 and 410 devices */
219         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
220         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
221
222         /* Belkin F8T012 and F8T013 devices */
223         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
224         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
225
226         /* Asus WL-BTD202 device */
227         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
228
229         /* Kensington Bluetooth USB adapter */
230         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
231
232         /* RTX Telecom based adapters with buggy SCO support */
233         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
234         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
235
236         /* CONWISE Technology based adapters with buggy SCO support */
237         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
238
239         /* Digianswer devices */
240         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
241         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
242
243         /* CSR BlueCore Bluetooth Sniffer */
244         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
245
246         /* Frontline ComProbe Bluetooth Sniffer */
247         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
248
249         { }     /* Terminating entry */
250 };
251
252 #define BTUSB_MAX_ISOC_FRAMES   10
253
254 #define BTUSB_INTR_RUNNING      0
255 #define BTUSB_BULK_RUNNING      1
256 #define BTUSB_ISOC_RUNNING      2
257 #define BTUSB_SUSPENDING        3
258 #define BTUSB_DID_ISO_RESUME    4
259
260 struct btusb_data {
261         struct hci_dev       *hdev;
262         struct usb_device    *udev;
263         struct usb_interface *intf;
264         struct usb_interface *isoc;
265
266         spinlock_t lock;
267
268         unsigned long flags;
269
270         struct work_struct work;
271         struct work_struct waker;
272
273         struct usb_anchor tx_anchor;
274         struct usb_anchor intr_anchor;
275         struct usb_anchor bulk_anchor;
276         struct usb_anchor isoc_anchor;
277         struct usb_anchor deferred;
278         int tx_in_flight;
279         spinlock_t txlock;
280
281         struct usb_endpoint_descriptor *intr_ep;
282         struct usb_endpoint_descriptor *bulk_tx_ep;
283         struct usb_endpoint_descriptor *bulk_rx_ep;
284         struct usb_endpoint_descriptor *isoc_tx_ep;
285         struct usb_endpoint_descriptor *isoc_rx_ep;
286
287         __u8 cmdreq_type;
288
289         unsigned int sco_num;
290         int isoc_altsetting;
291         int suspend_count;
292 };
293
294 static int inc_tx(struct btusb_data *data)
295 {
296         unsigned long flags;
297         int rv;
298
299         spin_lock_irqsave(&data->txlock, flags);
300         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
301         if (!rv)
302                 data->tx_in_flight++;
303         spin_unlock_irqrestore(&data->txlock, flags);
304
305         return rv;
306 }
307
308 static void btusb_intr_complete(struct urb *urb)
309 {
310         struct hci_dev *hdev = urb->context;
311         struct btusb_data *data = hdev->driver_data;
312         int err;
313
314         BT_DBG("%s urb %p status %d count %d", hdev->name,
315                                         urb, urb->status, urb->actual_length);
316
317         if (!test_bit(HCI_RUNNING, &hdev->flags))
318                 return;
319
320         if (urb->status == 0) {
321                 hdev->stat.byte_rx += urb->actual_length;
322
323                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
324                                                 urb->transfer_buffer,
325                                                 urb->actual_length) < 0) {
326                         BT_ERR("%s corrupted event packet", hdev->name);
327                         hdev->stat.err_rx++;
328                 }
329         } else if (urb->status == -ENOENT) {
330                 /* Avoid suspend failed when usb_kill_urb */
331                 return;
332         }
333
334         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
335                 return;
336
337         usb_mark_last_busy(data->udev);
338         usb_anchor_urb(urb, &data->intr_anchor);
339
340         err = usb_submit_urb(urb, GFP_ATOMIC);
341         if (err < 0) {
342                 /* -EPERM: urb is being killed;
343                  * -ENODEV: device got disconnected */
344                 if (err != -EPERM && err != -ENODEV)
345                         BT_ERR("%s urb %p failed to resubmit (%d)",
346                                                 hdev->name, urb, -err);
347                 usb_unanchor_urb(urb);
348         }
349 }
350
351 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
352 {
353         struct btusb_data *data = hdev->driver_data;
354         struct urb *urb;
355         unsigned char *buf;
356         unsigned int pipe;
357         int err, size;
358
359         BT_DBG("%s", hdev->name);
360
361         if (!data->intr_ep)
362                 return -ENODEV;
363
364         urb = usb_alloc_urb(0, mem_flags);
365         if (!urb)
366                 return -ENOMEM;
367
368         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
369
370         buf = kmalloc(size, mem_flags);
371         if (!buf) {
372                 usb_free_urb(urb);
373                 return -ENOMEM;
374         }
375
376         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
377
378         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
379                                                 btusb_intr_complete, hdev,
380                                                 data->intr_ep->bInterval);
381
382         urb->transfer_flags |= URB_FREE_BUFFER;
383
384         usb_anchor_urb(urb, &data->intr_anchor);
385
386         err = usb_submit_urb(urb, mem_flags);
387         if (err < 0) {
388                 BT_ERR("%s urb %p submission failed (%d)",
389                                                 hdev->name, urb, -err);
390                 usb_unanchor_urb(urb);
391         }
392
393         usb_free_urb(urb);
394
395         return err;
396 }
397
398 static void btusb_bulk_complete(struct urb *urb)
399 {
400         struct hci_dev *hdev = urb->context;
401         struct btusb_data *data = hdev->driver_data;
402         int err;
403
404         BT_DBG("%s urb %p status %d count %d", hdev->name,
405                                         urb, urb->status, urb->actual_length);
406
407         if (!test_bit(HCI_RUNNING, &hdev->flags))
408                 return;
409
410         if (urb->status == 0) {
411                 hdev->stat.byte_rx += urb->actual_length;
412
413                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
414                                                 urb->transfer_buffer,
415                                                 urb->actual_length) < 0) {
416                         BT_ERR("%s corrupted ACL packet", hdev->name);
417                         hdev->stat.err_rx++;
418                 }
419         } else if (urb->status == -ENOENT) {
420                 /* Avoid suspend failed when usb_kill_urb */
421                 return;
422         }
423
424         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
425                 return;
426
427         usb_anchor_urb(urb, &data->bulk_anchor);
428         usb_mark_last_busy(data->udev);
429
430         err = usb_submit_urb(urb, GFP_ATOMIC);
431         if (err < 0) {
432                 /* -EPERM: urb is being killed;
433                  * -ENODEV: device got disconnected */
434                 if (err != -EPERM && err != -ENODEV)
435                         BT_ERR("%s urb %p failed to resubmit (%d)",
436                                                 hdev->name, urb, -err);
437                 usb_unanchor_urb(urb);
438         }
439 }
440
441 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
442 {
443         struct btusb_data *data = hdev->driver_data;
444         struct urb *urb;
445         unsigned char *buf;
446         unsigned int pipe;
447         int err, size = HCI_MAX_FRAME_SIZE;
448
449         BT_DBG("%s", hdev->name);
450
451         if (!data->bulk_rx_ep)
452                 return -ENODEV;
453
454         urb = usb_alloc_urb(0, mem_flags);
455         if (!urb)
456                 return -ENOMEM;
457
458         buf = kmalloc(size, mem_flags);
459         if (!buf) {
460                 usb_free_urb(urb);
461                 return -ENOMEM;
462         }
463
464         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
465
466         usb_fill_bulk_urb(urb, data->udev, pipe,
467                                         buf, size, btusb_bulk_complete, hdev);
468
469         urb->transfer_flags |= URB_FREE_BUFFER;
470
471         usb_mark_last_busy(data->udev);
472         usb_anchor_urb(urb, &data->bulk_anchor);
473
474         err = usb_submit_urb(urb, mem_flags);
475         if (err < 0) {
476                 BT_ERR("%s urb %p submission failed (%d)",
477                                                 hdev->name, urb, -err);
478                 usb_unanchor_urb(urb);
479         }
480
481         usb_free_urb(urb);
482
483         return err;
484 }
485
486 static void btusb_isoc_complete(struct urb *urb)
487 {
488         struct hci_dev *hdev = urb->context;
489         struct btusb_data *data = hdev->driver_data;
490         int i, err;
491
492         BT_DBG("%s urb %p status %d count %d", hdev->name,
493                                         urb, urb->status, urb->actual_length);
494
495         if (!test_bit(HCI_RUNNING, &hdev->flags))
496                 return;
497
498         if (urb->status == 0) {
499                 for (i = 0; i < urb->number_of_packets; i++) {
500                         unsigned int offset = urb->iso_frame_desc[i].offset;
501                         unsigned int length = urb->iso_frame_desc[i].actual_length;
502
503                         if (urb->iso_frame_desc[i].status)
504                                 continue;
505
506                         hdev->stat.byte_rx += length;
507
508                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
509                                                 urb->transfer_buffer + offset,
510                                                                 length) < 0) {
511                                 BT_ERR("%s corrupted SCO packet", hdev->name);
512                                 hdev->stat.err_rx++;
513                         }
514                 }
515         } else if (urb->status == -ENOENT) {
516                 /* Avoid suspend failed when usb_kill_urb */
517                 return;
518         }
519
520         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
521                 return;
522
523         usb_anchor_urb(urb, &data->isoc_anchor);
524
525         err = usb_submit_urb(urb, GFP_ATOMIC);
526         if (err < 0) {
527                 /* -EPERM: urb is being killed;
528                  * -ENODEV: device got disconnected */
529                 if (err != -EPERM && err != -ENODEV)
530                         BT_ERR("%s urb %p failed to resubmit (%d)",
531                                                 hdev->name, urb, -err);
532                 usb_unanchor_urb(urb);
533         }
534 }
535
536 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
537 {
538         int i, offset = 0;
539
540         BT_DBG("len %d mtu %d", len, mtu);
541
542         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
543                                         i++, offset += mtu, len -= mtu) {
544                 urb->iso_frame_desc[i].offset = offset;
545                 urb->iso_frame_desc[i].length = mtu;
546         }
547
548         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
549                 urb->iso_frame_desc[i].offset = offset;
550                 urb->iso_frame_desc[i].length = len;
551                 i++;
552         }
553
554         urb->number_of_packets = i;
555 }
556
557 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
558 {
559         struct btusb_data *data = hdev->driver_data;
560         struct urb *urb;
561         unsigned char *buf;
562         unsigned int pipe;
563         int err, size;
564
565         BT_DBG("%s", hdev->name);
566
567         if (!data->isoc_rx_ep)
568                 return -ENODEV;
569
570         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
571         if (!urb)
572                 return -ENOMEM;
573
574         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
575                                                 BTUSB_MAX_ISOC_FRAMES;
576
577         buf = kmalloc(size, mem_flags);
578         if (!buf) {
579                 usb_free_urb(urb);
580                 return -ENOMEM;
581         }
582
583         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
584
585         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
586                                 hdev, data->isoc_rx_ep->bInterval);
587
588         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
589
590         __fill_isoc_descriptor(urb, size,
591                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
592
593         usb_anchor_urb(urb, &data->isoc_anchor);
594
595         err = usb_submit_urb(urb, mem_flags);
596         if (err < 0) {
597                 BT_ERR("%s urb %p submission failed (%d)",
598                                                 hdev->name, urb, -err);
599                 usb_unanchor_urb(urb);
600         }
601
602         usb_free_urb(urb);
603
604         return err;
605 }
606
607 static void btusb_tx_complete(struct urb *urb)
608 {
609         struct sk_buff *skb = urb->context;
610         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
611         struct btusb_data *data = hdev->driver_data;
612
613         BT_DBG("%s urb %p status %d count %d", hdev->name,
614                                         urb, urb->status, urb->actual_length);
615
616         if (!test_bit(HCI_RUNNING, &hdev->flags))
617                 goto done;
618
619         if (!urb->status)
620                 hdev->stat.byte_tx += urb->transfer_buffer_length;
621         else
622                 hdev->stat.err_tx++;
623
624 done:
625         spin_lock(&data->txlock);
626         data->tx_in_flight--;
627         spin_unlock(&data->txlock);
628
629         kfree(urb->setup_packet);
630
631         kfree_skb(skb);
632 }
633
634 static void btusb_isoc_tx_complete(struct urb *urb)
635 {
636         struct sk_buff *skb = urb->context;
637         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
638
639         BT_DBG("%s urb %p status %d count %d", hdev->name,
640                                         urb, urb->status, urb->actual_length);
641
642         if (!test_bit(HCI_RUNNING, &hdev->flags))
643                 goto done;
644
645         if (!urb->status)
646                 hdev->stat.byte_tx += urb->transfer_buffer_length;
647         else
648                 hdev->stat.err_tx++;
649
650 done:
651         kfree(urb->setup_packet);
652
653         kfree_skb(skb);
654 }
655
656 static int btusb_open(struct hci_dev *hdev)
657 {
658         struct btusb_data *data = hdev->driver_data;
659         int err;
660
661         BT_DBG("%s", hdev->name);
662
663         err = usb_autopm_get_interface(data->intf);
664         if (err < 0)
665                 return err;
666
667         data->intf->needs_remote_wakeup = 1;
668
669         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
670                 goto done;
671
672         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
673                 goto done;
674
675         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
676         if (err < 0)
677                 goto failed;
678
679         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
680         if (err < 0) {
681                 usb_kill_anchored_urbs(&data->intr_anchor);
682                 goto failed;
683         }
684
685         set_bit(BTUSB_BULK_RUNNING, &data->flags);
686         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
687
688 done:
689         usb_autopm_put_interface(data->intf);
690         return 0;
691
692 failed:
693         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
694         clear_bit(HCI_RUNNING, &hdev->flags);
695         usb_autopm_put_interface(data->intf);
696         return err;
697 }
698
699 static void btusb_stop_traffic(struct btusb_data *data)
700 {
701         usb_kill_anchored_urbs(&data->intr_anchor);
702         usb_kill_anchored_urbs(&data->bulk_anchor);
703         usb_kill_anchored_urbs(&data->isoc_anchor);
704 }
705
706 static int btusb_close(struct hci_dev *hdev)
707 {
708         struct btusb_data *data = hdev->driver_data;
709         int err;
710
711         BT_DBG("%s", hdev->name);
712
713         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
714                 return 0;
715
716         cancel_work_sync(&data->work);
717         cancel_work_sync(&data->waker);
718
719         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
720         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
721         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
722
723         btusb_stop_traffic(data);
724         err = usb_autopm_get_interface(data->intf);
725         if (err < 0)
726                 goto failed;
727
728         data->intf->needs_remote_wakeup = 0;
729         usb_autopm_put_interface(data->intf);
730
731 failed:
732         usb_scuttle_anchored_urbs(&data->deferred);
733         return 0;
734 }
735
736 static int btusb_flush(struct hci_dev *hdev)
737 {
738         struct btusb_data *data = hdev->driver_data;
739
740         BT_DBG("%s", hdev->name);
741
742         usb_kill_anchored_urbs(&data->tx_anchor);
743
744         return 0;
745 }
746
747 static int btusb_send_frame(struct sk_buff *skb)
748 {
749         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
750         struct btusb_data *data = hdev->driver_data;
751         struct usb_ctrlrequest *dr;
752         struct urb *urb;
753         unsigned int pipe;
754         int err;
755
756         BT_DBG("%s", hdev->name);
757
758         if (!test_bit(HCI_RUNNING, &hdev->flags))
759                 return -EBUSY;
760
761         switch (bt_cb(skb)->pkt_type) {
762         case HCI_COMMAND_PKT:
763                 urb = usb_alloc_urb(0, GFP_ATOMIC);
764                 if (!urb)
765                         return -ENOMEM;
766
767                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
768                 if (!dr) {
769                         usb_free_urb(urb);
770                         return -ENOMEM;
771                 }
772
773                 dr->bRequestType = data->cmdreq_type;
774                 dr->bRequest     = 0;
775                 dr->wIndex       = 0;
776                 dr->wValue       = 0;
777                 dr->wLength      = __cpu_to_le16(skb->len);
778
779                 pipe = usb_sndctrlpipe(data->udev, 0x00);
780
781                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
782                                 skb->data, skb->len, btusb_tx_complete, skb);
783
784                 hdev->stat.cmd_tx++;
785                 break;
786
787         case HCI_ACLDATA_PKT:
788                 if (!data->bulk_tx_ep)
789                         return -ENODEV;
790
791                 urb = usb_alloc_urb(0, GFP_ATOMIC);
792                 if (!urb)
793                         return -ENOMEM;
794
795                 pipe = usb_sndbulkpipe(data->udev,
796                                         data->bulk_tx_ep->bEndpointAddress);
797
798                 usb_fill_bulk_urb(urb, data->udev, pipe,
799                                 skb->data, skb->len, btusb_tx_complete, skb);
800
801                 hdev->stat.acl_tx++;
802                 break;
803
804         case HCI_SCODATA_PKT:
805                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
806                         return -ENODEV;
807
808                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
809                 if (!urb)
810                         return -ENOMEM;
811
812                 pipe = usb_sndisocpipe(data->udev,
813                                         data->isoc_tx_ep->bEndpointAddress);
814
815                 usb_fill_int_urb(urb, data->udev, pipe,
816                                 skb->data, skb->len, btusb_isoc_tx_complete,
817                                 skb, data->isoc_tx_ep->bInterval);
818
819                 urb->transfer_flags  = URB_ISO_ASAP;
820
821                 __fill_isoc_descriptor(urb, skb->len,
822                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
823
824                 hdev->stat.sco_tx++;
825                 goto skip_waking;
826
827         default:
828                 return -EILSEQ;
829         }
830
831         err = inc_tx(data);
832         if (err) {
833                 usb_anchor_urb(urb, &data->deferred);
834                 schedule_work(&data->waker);
835                 err = 0;
836                 goto done;
837         }
838
839 skip_waking:
840         usb_anchor_urb(urb, &data->tx_anchor);
841
842         err = usb_submit_urb(urb, GFP_ATOMIC);
843         if (err < 0) {
844                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
845                 kfree(urb->setup_packet);
846                 usb_unanchor_urb(urb);
847         } else {
848                 usb_mark_last_busy(data->udev);
849         }
850
851 done:
852         usb_free_urb(urb);
853         return err;
854 }
855
856 static void btusb_destruct(struct hci_dev *hdev)
857 {
858         struct btusb_data *data = hdev->driver_data;
859
860         BT_DBG("%s", hdev->name);
861
862         kfree(data);
863 }
864
865 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
866 {
867         struct btusb_data *data = hdev->driver_data;
868
869         BT_DBG("%s evt %d", hdev->name, evt);
870
871         if (hdev->conn_hash.sco_num != data->sco_num) {
872                 data->sco_num = hdev->conn_hash.sco_num;
873                 schedule_work(&data->work);
874         }
875 }
876
877 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
878 {
879         struct btusb_data *data = hdev->driver_data;
880         struct usb_interface *intf = data->isoc;
881         struct usb_endpoint_descriptor *ep_desc;
882         int i, err;
883
884         if (!data->isoc)
885                 return -ENODEV;
886
887         err = usb_set_interface(data->udev, 1, altsetting);
888         if (err < 0) {
889                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
890                 return err;
891         }
892
893         data->isoc_altsetting = altsetting;
894
895         data->isoc_tx_ep = NULL;
896         data->isoc_rx_ep = NULL;
897
898         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
899                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
900
901                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
902                         data->isoc_tx_ep = ep_desc;
903                         continue;
904                 }
905
906                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
907                         data->isoc_rx_ep = ep_desc;
908                         continue;
909                 }
910         }
911
912         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
913                 BT_ERR("%s invalid SCO descriptors", hdev->name);
914                 return -ENODEV;
915         }
916
917         return 0;
918 }
919
920 static void btusb_work(struct work_struct *work)
921 {
922         struct btusb_data *data = container_of(work, struct btusb_data, work);
923         struct hci_dev *hdev = data->hdev;
924         int err;
925
926         if (hdev->conn_hash.sco_num > 0) {
927                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
928                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
929                         if (err < 0) {
930                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
931                                 usb_kill_anchored_urbs(&data->isoc_anchor);
932                                 return;
933                         }
934
935                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
936                 }
937                 if (data->isoc_altsetting != 2) {
938                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
939                         usb_kill_anchored_urbs(&data->isoc_anchor);
940
941                         if (__set_isoc_interface(hdev, 2) < 0)
942                                 return;
943                 }
944
945                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
946                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
947                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
948                         else
949                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
950                 }
951         } else {
952                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
953                 usb_kill_anchored_urbs(&data->isoc_anchor);
954
955                 __set_isoc_interface(hdev, 0);
956                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
957                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
958         }
959 }
960
961 static void btusb_waker(struct work_struct *work)
962 {
963         struct btusb_data *data = container_of(work, struct btusb_data, waker);
964         int err;
965
966         err = usb_autopm_get_interface(data->intf);
967         if (err < 0)
968                 return;
969
970         usb_autopm_put_interface(data->intf);
971 }
972
973 static int btusb_probe(struct usb_interface *intf,
974                                 const struct usb_device_id *id)
975 {
976         struct usb_endpoint_descriptor *ep_desc;
977         struct btusb_data *data;
978         struct hci_dev *hdev;
979         int i, err;
980
981         BT_DBG("intf %p id %p", intf, id);
982
983         /* interface numbers are hardcoded in the spec */
984         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
985                 return -ENODEV;
986
987         if (!id->driver_info) {
988                 const struct usb_device_id *match;
989                 match = usb_match_id(intf, blacklist_table);
990                 if (match)
991                         id = match;
992         }
993
994         if (id->driver_info == BTUSB_IGNORE)
995                 return -ENODEV;
996
997         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
998                 return -ENODEV;
999
1000         if (ignore_csr && id->driver_info & BTUSB_CSR)
1001                 return -ENODEV;
1002
1003         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1004                 return -ENODEV;
1005
1006         if (id->driver_info & BTUSB_ATH3012) {
1007                 struct usb_device *udev = interface_to_usbdev(intf);
1008
1009                 /* Old firmware would otherwise let ath3k driver load
1010                  * patch and sysconfig files */
1011                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1012                         return -ENODEV;
1013         }
1014
1015         data = kzalloc(sizeof(*data), GFP_KERNEL);
1016         if (!data)
1017                 return -ENOMEM;
1018
1019         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1020                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1021
1022                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1023                         data->intr_ep = ep_desc;
1024                         continue;
1025                 }
1026
1027                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1028                         data->bulk_tx_ep = ep_desc;
1029                         continue;
1030                 }
1031
1032                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1033                         data->bulk_rx_ep = ep_desc;
1034                         continue;
1035                 }
1036         }
1037
1038         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1039                 kfree(data);
1040                 return -ENODEV;
1041         }
1042
1043         data->cmdreq_type = USB_TYPE_CLASS;
1044
1045         data->udev = interface_to_usbdev(intf);
1046         data->intf = intf;
1047
1048         spin_lock_init(&data->lock);
1049
1050         INIT_WORK(&data->work, btusb_work);
1051         INIT_WORK(&data->waker, btusb_waker);
1052         spin_lock_init(&data->txlock);
1053
1054         init_usb_anchor(&data->tx_anchor);
1055         init_usb_anchor(&data->intr_anchor);
1056         init_usb_anchor(&data->bulk_anchor);
1057         init_usb_anchor(&data->isoc_anchor);
1058         init_usb_anchor(&data->deferred);
1059
1060         hdev = hci_alloc_dev();
1061         if (!hdev) {
1062                 kfree(data);
1063                 return -ENOMEM;
1064         }
1065
1066         hdev->bus = HCI_USB;
1067         hdev->driver_data = data;
1068
1069         data->hdev = hdev;
1070
1071         SET_HCIDEV_DEV(hdev, &intf->dev);
1072
1073         hdev->open     = btusb_open;
1074         hdev->close    = btusb_close;
1075         hdev->flush    = btusb_flush;
1076         hdev->send     = btusb_send_frame;
1077         hdev->destruct = btusb_destruct;
1078         hdev->notify   = btusb_notify;
1079
1080         hdev->owner = THIS_MODULE;
1081
1082         if (id->driver_info & BTUSB_INTEL_BOOT)
1083                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1084
1085         /* Interface numbers are hardcoded in the specification */
1086         data->isoc = usb_ifnum_to_if(data->udev, 1);
1087
1088         if (!reset)
1089                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1090
1091         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1092                 if (!disable_scofix)
1093                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1094         }
1095
1096         if (id->driver_info & BTUSB_BROKEN_ISOC)
1097                 data->isoc = NULL;
1098
1099         if (id->driver_info & BTUSB_DIGIANSWER) {
1100                 data->cmdreq_type = USB_TYPE_VENDOR;
1101                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1102         }
1103
1104         if (id->driver_info & BTUSB_CSR) {
1105                 struct usb_device *udev = data->udev;
1106
1107                 /* Old firmware would otherwise execute USB reset */
1108                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1109                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1110         }
1111
1112         if (id->driver_info & BTUSB_SNIFFER) {
1113                 struct usb_device *udev = data->udev;
1114
1115                 /* New sniffer firmware has crippled HCI interface */
1116                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1117                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1118
1119                 data->isoc = NULL;
1120         }
1121
1122         if (id->driver_info & BTUSB_BCM92035) {
1123                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1124                 struct sk_buff *skb;
1125
1126                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1127                 if (skb) {
1128                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1129                         skb_queue_tail(&hdev->driver_init, skb);
1130                 }
1131         }
1132
1133         if (data->isoc) {
1134                 err = usb_driver_claim_interface(&btusb_driver,
1135                                                         data->isoc, data);
1136                 if (err < 0) {
1137                         hci_free_dev(hdev);
1138                         kfree(data);
1139                         return err;
1140                 }
1141         }
1142
1143         err = hci_register_dev(hdev);
1144         if (err < 0) {
1145                 hci_free_dev(hdev);
1146                 kfree(data);
1147                 return err;
1148         }
1149
1150         usb_set_intfdata(intf, data);
1151
1152         return 0;
1153 }
1154
1155 static void btusb_disconnect(struct usb_interface *intf)
1156 {
1157         struct btusb_data *data = usb_get_intfdata(intf);
1158         struct hci_dev *hdev;
1159
1160         BT_DBG("intf %p", intf);
1161
1162         if (!data)
1163                 return;
1164
1165         hdev = data->hdev;
1166
1167         __hci_dev_hold(hdev);
1168
1169         usb_set_intfdata(data->intf, NULL);
1170
1171         if (data->isoc)
1172                 usb_set_intfdata(data->isoc, NULL);
1173
1174         hci_unregister_dev(hdev);
1175
1176         if (intf == data->isoc)
1177                 usb_driver_release_interface(&btusb_driver, data->intf);
1178         else if (data->isoc)
1179                 usb_driver_release_interface(&btusb_driver, data->isoc);
1180
1181         __hci_dev_put(hdev);
1182
1183         hci_free_dev(hdev);
1184 }
1185
1186 #ifdef CONFIG_PM
1187 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1188 {
1189         struct btusb_data *data = usb_get_intfdata(intf);
1190
1191         BT_DBG("intf %p", intf);
1192
1193         if (data->suspend_count++)
1194                 return 0;
1195
1196         spin_lock_irq(&data->txlock);
1197         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1198                 set_bit(BTUSB_SUSPENDING, &data->flags);
1199                 spin_unlock_irq(&data->txlock);
1200         } else {
1201                 spin_unlock_irq(&data->txlock);
1202                 data->suspend_count--;
1203                 return -EBUSY;
1204         }
1205
1206         cancel_work_sync(&data->work);
1207
1208         btusb_stop_traffic(data);
1209         usb_kill_anchored_urbs(&data->tx_anchor);
1210
1211         return 0;
1212 }
1213
1214 static void play_deferred(struct btusb_data *data)
1215 {
1216         struct urb *urb;
1217         int err;
1218
1219         while ((urb = usb_get_from_anchor(&data->deferred))) {
1220                 err = usb_submit_urb(urb, GFP_ATOMIC);
1221                 if (err < 0)
1222                         break;
1223
1224                 data->tx_in_flight++;
1225         }
1226         usb_scuttle_anchored_urbs(&data->deferred);
1227 }
1228
1229 static int btusb_resume(struct usb_interface *intf)
1230 {
1231         struct btusb_data *data = usb_get_intfdata(intf);
1232         struct hci_dev *hdev = data->hdev;
1233         int err = 0;
1234
1235         BT_DBG("intf %p", intf);
1236
1237         if (--data->suspend_count)
1238                 return 0;
1239
1240         if (!test_bit(HCI_RUNNING, &hdev->flags))
1241                 goto done;
1242
1243         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1244                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1245                 if (err < 0) {
1246                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1247                         goto failed;
1248                 }
1249         }
1250
1251         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1252                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1253                 if (err < 0) {
1254                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1255                         goto failed;
1256                 }
1257
1258                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1259         }
1260
1261         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1262                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1263                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1264                 else
1265                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1266         }
1267
1268         spin_lock_irq(&data->txlock);
1269         play_deferred(data);
1270         clear_bit(BTUSB_SUSPENDING, &data->flags);
1271         spin_unlock_irq(&data->txlock);
1272         schedule_work(&data->work);
1273
1274         return 0;
1275
1276 failed:
1277         usb_scuttle_anchored_urbs(&data->deferred);
1278 done:
1279         spin_lock_irq(&data->txlock);
1280         clear_bit(BTUSB_SUSPENDING, &data->flags);
1281         spin_unlock_irq(&data->txlock);
1282
1283         return err;
1284 }
1285 #endif
1286
1287 static struct usb_driver btusb_driver = {
1288         .name           = "btusb",
1289         .probe          = btusb_probe,
1290         .disconnect     = btusb_disconnect,
1291 #ifdef CONFIG_PM
1292         .suspend        = btusb_suspend,
1293         .resume         = btusb_resume,
1294 #endif
1295         .id_table       = btusb_table,
1296         .supports_autosuspend = 1,
1297 };
1298
1299 static int __init btusb_init(void)
1300 {
1301         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1302
1303         return usb_register(&btusb_driver);
1304 }
1305
1306 static void __exit btusb_exit(void)
1307 {
1308         usb_deregister(&btusb_driver);
1309 }
1310
1311 module_init(btusb_init);
1312 module_exit(btusb_exit);
1313
1314 module_param(ignore_dga, bool, 0644);
1315 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1316
1317 module_param(ignore_csr, bool, 0644);
1318 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1319
1320 module_param(ignore_sniffer, bool, 0644);
1321 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1322
1323 module_param(disable_scofix, bool, 0644);
1324 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1325
1326 module_param(force_scofix, bool, 0644);
1327 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1328
1329 module_param(reset, bool, 0644);
1330 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1331
1332 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1333 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1334 MODULE_VERSION(VERSION);
1335 MODULE_LICENSE("GPL");