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[SCSI] csiostor: Don't leak mem or fail to release firmware in csio_hw_flash_config()
[mirror_ubuntu-zesty-kernel.git] / drivers / bluetooth / btusb.c
CommitLineData
5e23b923
MH		 1/*
2 *
3 * Generic Bluetooth USB driver
4 *
9bfa35fe 5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
5e23b923
MH		 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
5e23b923 24#include <linux/module.h>
5e23b923
MH		 25#include <linux/usb.h>
26
27#include <net/bluetooth/bluetooth.h>
28#include <net/bluetooth/hci_core.h>
29
7bee549e 30#define VERSION "0.6"
cfeb4145 31
90ab5ee9
RR		 32static bool ignore_dga;
33static bool ignore_csr;
34static bool ignore_sniffer;
35static bool disable_scofix;
36static bool force_scofix;
7a9d4020 37
90ab5ee9 38static bool reset = 1;
cfeb4145
MH		 39
40static struct usb_driver btusb_driver;
41
42#define BTUSB_IGNORE 0x01
7a9d4020
MH		 43#define BTUSB_DIGIANSWER 0x02
44#define BTUSB_CSR 0x04
45#define BTUSB_SNIFFER 0x08
46#define BTUSB_BCM92035 0x10
47#define BTUSB_BROKEN_ISOC 0x20
48#define BTUSB_WRONG_SCO_MTU 0x40
2d25f8b4 49#define BTUSB_ATH3012 0x80
5e23b923
MH		 50
51static struct usb_device_id btusb_table[] = {
52 /* Generic Bluetooth USB device */
53 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
54
1fa6535f
HR		 55 /* Apple-specific (Broadcom) devices */
56 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
57
c510eae3 58 /* Broadcom SoftSailing reporting vendor specific */
2e8b5063 59 { USB_DEVICE(0x0a5c, 0x21e1) },
c510eae3 60
3cd01976
NI		 61 /* Apple MacBookPro 7,1 */
62 { USB_DEVICE(0x05ac, 0x8213) },
63
0a79f674
CL		 64 /* Apple iMac11,1 */
65 { USB_DEVICE(0x05ac, 0x8215) },
66
9c047157
NI		 67 /* Apple MacBookPro6,2 */
68 { USB_DEVICE(0x05ac, 0x8218) },
69
3e3ede7d
EH		 70 /* Apple MacBookAir3,1, MacBookAir3,2 */
71 { USB_DEVICE(0x05ac, 0x821b) },
72
a63b723d
PAVM		 73 /* Apple MacBookAir4,1 */
74 { USB_DEVICE(0x05ac, 0x821f) },
75
88d377b6
MAP		 76 /* Apple MacBookPro8,2 */
77 { USB_DEVICE(0x05ac, 0x821a) },
78
f78b6826
JK		 79 /* Apple MacMini5,1 */
80 { USB_DEVICE(0x05ac, 0x8281) },
81
cfeb4145
MH		 82 /* AVM BlueFRITZ! USB v2.0 */
83 { USB_DEVICE(0x057c, 0x3800) },
84
85 /* Bluetooth Ultraport Module from IBM */
86 { USB_DEVICE(0x04bf, 0x030a) },
87
88 /* ALPS Modules with non-standard id */
89 { USB_DEVICE(0x044e, 0x3001) },
90 { USB_DEVICE(0x044e, 0x3002) },
91
92 /* Ericsson with non-standard id */
93 { USB_DEVICE(0x0bdb, 0x1002) },
94
95 /* Canyon CN-BTU1 with HID interfaces */
7a9d4020 96 { USB_DEVICE(0x0c10, 0x0000) },
cfeb4145 97
d13431ca 98 /* Broadcom BCM20702A0 */
1ee3ff61 99 { USB_DEVICE(0x0b05, 0x17b5) },
0c1abbd1 100 { USB_DEVICE(0x04ca, 0x2003) },
79cd7602 101 { USB_DEVICE(0x0489, 0xe042) },
d13431ca
WJS		 102 { USB_DEVICE(0x413c, 0x8197) },
103
98514036 104 /* Foxconn - Hon Hai */
ee66401b 105 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
98514036 106
92c385f4
GP		 107 /*Broadcom devices with vendor specific id */
108 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
109
5e23b923
MH		 110 { } /* Terminating entry */
111};
112
113MODULE_DEVICE_TABLE(usb, btusb_table);
114
115static struct usb_device_id blacklist_table[] = {
cfeb4145
MH		 116 /* CSR BlueCore devices */
117 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
118
119 /* Broadcom BCM2033 without firmware */
120 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
121
be93112a
BS		 122 /* Atheros 3011 with sflash firmware */
123 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
6eda541d 124 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
2a7bcccc 125 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
8e7c3d2e 126 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
6b6ba88b 127 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
acd94544 128 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
be93112a 129
509e7861
CYC		 130 /* Atheros AR9285 Malbec with sflash firmware */
131 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
132
d9f51b51 133 /* Atheros 3012 with sflash firmware */
2d25f8b4 134 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
07c0ea87 135 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
9498ba7a 136 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
55ed7d4d 137 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
2c262b2a 138 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
f4d6f7dc 139 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
87522a43 140 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
ac71311e 141 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
6c4ae5c2 142 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
2096ae6c 143 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
eed307e2 144 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
3a61eda8 145 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
2582d529 146 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
d9f51b51 147
e9036e33
CYC		 148 /* Atheros AR5BBU12 with sflash firmware */
149 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
150
85d59726
MG		 151 /* Atheros AR5BBU12 with sflash firmware */
152 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
bc21fde2 153 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
85d59726 154
cfeb4145 155 /* Broadcom BCM2035 */
7a9d4020
MH		 156 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
157 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
158 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
cfeb4145
MH		 159
160 /* Broadcom BCM2045 */
7a9d4020
MH		 161 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
162 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
bdbef3d6 163
cfeb4145 164 /* IBM/Lenovo ThinkPad with Broadcom chip */
7a9d4020
MH		 165 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
166 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 167
168 /* HP laptop with Broadcom chip */
7a9d4020 169 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 170
171 /* Dell laptop with Broadcom chip */
7a9d4020 172 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 173
5ddd4a60 174 /* Dell Wireless 370 and 410 devices */
7a9d4020 175 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
5ddd4a60 176 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 177
7a9d4020
MH		 178 /* Belkin F8T012 and F8T013 devices */
179 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
180 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 181
5ddd4a60
MH		 182 /* Asus WL-BTD202 device */
183 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
184
185 /* Kensington Bluetooth USB adapter */
186 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
187
cfeb4145
MH		 188 /* RTX Telecom based adapters with buggy SCO support */
189 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
190 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
191
192 /* CONWISE Technology based adapters with buggy SCO support */
193 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
194
cfeb4145
MH		 195 /* Digianswer devices */
196 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
197 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
198
199 /* CSR BlueCore Bluetooth Sniffer */
200 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
201
202 /* Frontline ComProbe Bluetooth Sniffer */
203 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
204
5e23b923
MH		 205 { } /* Terminating entry */
206};
207
9bfa35fe
MH		 208#define BTUSB_MAX_ISOC_FRAMES 10
209
5e23b923
MH		 210#define BTUSB_INTR_RUNNING 0
211#define BTUSB_BULK_RUNNING 1
9bfa35fe 212#define BTUSB_ISOC_RUNNING 2
7bee549e 213#define BTUSB_SUSPENDING 3
08b8b6c4 214#define BTUSB_DID_ISO_RESUME 4
5e23b923
MH		 215
216struct btusb_data {
217 struct hci_dev *hdev;
218 struct usb_device *udev;
5fbcd260 219 struct usb_interface *intf;
9bfa35fe 220 struct usb_interface *isoc;
5e23b923
MH		 221
222 spinlock_t lock;
223
224 unsigned long flags;
225
226 struct work_struct work;
7bee549e 227 struct work_struct waker;
5e23b923
MH		 228
229 struct usb_anchor tx_anchor;
230 struct usb_anchor intr_anchor;
231 struct usb_anchor bulk_anchor;
9bfa35fe 232 struct usb_anchor isoc_anchor;
7bee549e
ON		 233 struct usb_anchor deferred;
234 int tx_in_flight;
235 spinlock_t txlock;
5e23b923
MH		 236
237 struct usb_endpoint_descriptor *intr_ep;
238 struct usb_endpoint_descriptor *bulk_tx_ep;
239 struct usb_endpoint_descriptor *bulk_rx_ep;
9bfa35fe
MH		 240 struct usb_endpoint_descriptor *isoc_tx_ep;
241 struct usb_endpoint_descriptor *isoc_rx_ep;
242
7a9d4020
MH		 243 __u8 cmdreq_type;
244
43c2e57f 245 unsigned int sco_num;
9bfa35fe 246 int isoc_altsetting;
6a88adf2 247 int suspend_count;
5e23b923
MH		 248};
249
7bee549e
ON		 250static int inc_tx(struct btusb_data *data)
251{
252 unsigned long flags;
253 int rv;
254
255 spin_lock_irqsave(&data->txlock, flags);
256 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
257 if (!rv)
258 data->tx_in_flight++;
259 spin_unlock_irqrestore(&data->txlock, flags);
260
261 return rv;
262}
263
5e23b923
MH		 264static void btusb_intr_complete(struct urb *urb)
265{
266 struct hci_dev *hdev = urb->context;
155961e8 267 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 268 int err;
269
270 BT_DBG("%s urb %p status %d count %d", hdev->name,
271 urb, urb->status, urb->actual_length);
272
273 if (!test_bit(HCI_RUNNING, &hdev->flags))
274 return;
275
276 if (urb->status == 0) {
9bfa35fe
MH		 277 hdev->stat.byte_rx += urb->actual_length;
278
5e23b923
MH		 279 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
280 urb->transfer_buffer,
281 urb->actual_length) < 0) {
282 BT_ERR("%s corrupted event packet", hdev->name);
283 hdev->stat.err_rx++;
284 }
285 }
286
287 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
288 return;
289
7bee549e 290 usb_mark_last_busy(data->udev);
5e23b923
MH		 291 usb_anchor_urb(urb, &data->intr_anchor);
292
293 err = usb_submit_urb(urb, GFP_ATOMIC);
294 if (err < 0) {
4935f1c1
PB		 295 /* -EPERM: urb is being killed;
296 * -ENODEV: device got disconnected */
297 if (err != -EPERM && err != -ENODEV)
61faddf6 298 BT_ERR("%s urb %p failed to resubmit (%d)",
5e23b923
MH		 299 hdev->name, urb, -err);
300 usb_unanchor_urb(urb);
301 }
302}
303
2eda66f4 304static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923 305{
155961e8 306 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 307 struct urb *urb;
308 unsigned char *buf;
309 unsigned int pipe;
310 int err, size;
311
312 BT_DBG("%s", hdev->name);
313
9bfa35fe
MH		 314 if (!data->intr_ep)
315 return -ENODEV;
316
2eda66f4 317 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 318 if (!urb)
319 return -ENOMEM;
320
321 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
322
2eda66f4 323 buf = kmalloc(size, mem_flags);
5e23b923
MH		 324 if (!buf) {
325 usb_free_urb(urb);
326 return -ENOMEM;
327 }
328
329 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
330
331 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
332 btusb_intr_complete, hdev,
333 data->intr_ep->bInterval);
334
335 urb->transfer_flags |= URB_FREE_BUFFER;
336
337 usb_anchor_urb(urb, &data->intr_anchor);
338
2eda66f4 339 err = usb_submit_urb(urb, mem_flags);
5e23b923 340 if (err < 0) {
d4b8d1c9
PB		 341 if (err != -EPERM && err != -ENODEV)
342 BT_ERR("%s urb %p submission failed (%d)",
5e23b923
MH		 343 hdev->name, urb, -err);
344 usb_unanchor_urb(urb);
5e23b923
MH		 345 }
346
347 usb_free_urb(urb);
348
349 return err;
350}
351
352static void btusb_bulk_complete(struct urb *urb)
353{
354 struct hci_dev *hdev = urb->context;
155961e8 355 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 356 int err;
357
358 BT_DBG("%s urb %p status %d count %d", hdev->name,
359 urb, urb->status, urb->actual_length);
360
361 if (!test_bit(HCI_RUNNING, &hdev->flags))
362 return;
363
364 if (urb->status == 0) {
9bfa35fe
MH		 365 hdev->stat.byte_rx += urb->actual_length;
366
5e23b923
MH		 367 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
368 urb->transfer_buffer,
369 urb->actual_length) < 0) {
370 BT_ERR("%s corrupted ACL packet", hdev->name);
371 hdev->stat.err_rx++;
372 }
373 }
374
375 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
376 return;
377
378 usb_anchor_urb(urb, &data->bulk_anchor);
652fd781 379 usb_mark_last_busy(data->udev);
5e23b923
MH		 380
381 err = usb_submit_urb(urb, GFP_ATOMIC);
382 if (err < 0) {
4935f1c1
PB		 383 /* -EPERM: urb is being killed;
384 * -ENODEV: device got disconnected */
385 if (err != -EPERM && err != -ENODEV)
61faddf6 386 BT_ERR("%s urb %p failed to resubmit (%d)",
5e23b923
MH		 387 hdev->name, urb, -err);
388 usb_unanchor_urb(urb);
389 }
390}
391
2eda66f4 392static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923 393{
155961e8 394 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 395 struct urb *urb;
396 unsigned char *buf;
397 unsigned int pipe;
290ba200 398 int err, size = HCI_MAX_FRAME_SIZE;
5e23b923
MH		 399
400 BT_DBG("%s", hdev->name);
401
9bfa35fe
MH		 402 if (!data->bulk_rx_ep)
403 return -ENODEV;
404
2eda66f4 405 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 406 if (!urb)
407 return -ENOMEM;
408
2eda66f4 409 buf = kmalloc(size, mem_flags);
5e23b923
MH		 410 if (!buf) {
411 usb_free_urb(urb);
412 return -ENOMEM;
413 }
414
415 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
416
417 usb_fill_bulk_urb(urb, data->udev, pipe,
418 buf, size, btusb_bulk_complete, hdev);
419
420 urb->transfer_flags |= URB_FREE_BUFFER;
421
7bee549e 422 usb_mark_last_busy(data->udev);
5e23b923
MH		 423 usb_anchor_urb(urb, &data->bulk_anchor);
424
2eda66f4 425 err = usb_submit_urb(urb, mem_flags);
5e23b923 426 if (err < 0) {
d4b8d1c9
PB		 427 if (err != -EPERM && err != -ENODEV)
428 BT_ERR("%s urb %p submission failed (%d)",
5e23b923
MH		 429 hdev->name, urb, -err);
430 usb_unanchor_urb(urb);
5e23b923
MH		 431 }
432
433 usb_free_urb(urb);
434
435 return err;
436}
437
9bfa35fe
MH		 438static void btusb_isoc_complete(struct urb *urb)
439{
440 struct hci_dev *hdev = urb->context;
155961e8 441 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 442 int i, err;
443
444 BT_DBG("%s urb %p status %d count %d", hdev->name,
445 urb, urb->status, urb->actual_length);
446
447 if (!test_bit(HCI_RUNNING, &hdev->flags))
448 return;
449
450 if (urb->status == 0) {
451 for (i = 0; i < urb->number_of_packets; i++) {
452 unsigned int offset = urb->iso_frame_desc[i].offset;
453 unsigned int length = urb->iso_frame_desc[i].actual_length;
454
455 if (urb->iso_frame_desc[i].status)
456 continue;
457
458 hdev->stat.byte_rx += length;
459
460 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
461 urb->transfer_buffer + offset,
462 length) < 0) {
463 BT_ERR("%s corrupted SCO packet", hdev->name);
464 hdev->stat.err_rx++;
465 }
466 }
467 }
468
469 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
470 return;
471
472 usb_anchor_urb(urb, &data->isoc_anchor);
473
474 err = usb_submit_urb(urb, GFP_ATOMIC);
475 if (err < 0) {
4935f1c1
PB		 476 /* -EPERM: urb is being killed;
477 * -ENODEV: device got disconnected */
478 if (err != -EPERM && err != -ENODEV)
61faddf6 479 BT_ERR("%s urb %p failed to resubmit (%d)",
9bfa35fe
MH		 480 hdev->name, urb, -err);
481 usb_unanchor_urb(urb);
482 }
483}
484
42b16b3f 485static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
9bfa35fe
MH		 486{
487 int i, offset = 0;
488
489 BT_DBG("len %d mtu %d", len, mtu);
490
491 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
492 i++, offset += mtu, len -= mtu) {
493 urb->iso_frame_desc[i].offset = offset;
494 urb->iso_frame_desc[i].length = mtu;
495 }
496
497 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
498 urb->iso_frame_desc[i].offset = offset;
499 urb->iso_frame_desc[i].length = len;
500 i++;
501 }
502
503 urb->number_of_packets = i;
504}
505
2eda66f4 506static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
9bfa35fe 507{
155961e8 508 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 509 struct urb *urb;
510 unsigned char *buf;
511 unsigned int pipe;
512 int err, size;
513
514 BT_DBG("%s", hdev->name);
515
516 if (!data->isoc_rx_ep)
517 return -ENODEV;
518
2eda66f4 519 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
9bfa35fe
MH		 520 if (!urb)
521 return -ENOMEM;
522
523 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
524 BTUSB_MAX_ISOC_FRAMES;
525
2eda66f4 526 buf = kmalloc(size, mem_flags);
9bfa35fe
MH		 527 if (!buf) {
528 usb_free_urb(urb);
529 return -ENOMEM;
530 }
531
532 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
533
fa0fb93f
BZ		 534 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
535 hdev, data->isoc_rx_ep->bInterval);
9bfa35fe
MH		 536
537 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
9bfa35fe
MH		 538
539 __fill_isoc_descriptor(urb, size,
540 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
541
542 usb_anchor_urb(urb, &data->isoc_anchor);
543
2eda66f4 544 err = usb_submit_urb(urb, mem_flags);
9bfa35fe 545 if (err < 0) {
d4b8d1c9
PB		 546 if (err != -EPERM && err != -ENODEV)
547 BT_ERR("%s urb %p submission failed (%d)",
9bfa35fe
MH		 548 hdev->name, urb, -err);
549 usb_unanchor_urb(urb);
9bfa35fe
MH		 550 }
551
552 usb_free_urb(urb);
553
554 return err;
555}
556
5e23b923 557static void btusb_tx_complete(struct urb *urb)
7bee549e
ON		 558{
559 struct sk_buff *skb = urb->context;
560 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
155961e8 561 struct btusb_data *data = hci_get_drvdata(hdev);
7bee549e
ON		 562
563 BT_DBG("%s urb %p status %d count %d", hdev->name,
564 urb, urb->status, urb->actual_length);
565
566 if (!test_bit(HCI_RUNNING, &hdev->flags))
567 goto done;
568
569 if (!urb->status)
570 hdev->stat.byte_tx += urb->transfer_buffer_length;
571 else
572 hdev->stat.err_tx++;
573
574done:
575 spin_lock(&data->txlock);
576 data->tx_in_flight--;
577 spin_unlock(&data->txlock);
578
579 kfree(urb->setup_packet);
580
581 kfree_skb(skb);
582}
583
584static void btusb_isoc_tx_complete(struct urb *urb)
5e23b923
MH		 585{
586 struct sk_buff *skb = urb->context;
587 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
588
589 BT_DBG("%s urb %p status %d count %d", hdev->name,
590 urb, urb->status, urb->actual_length);
591
592 if (!test_bit(HCI_RUNNING, &hdev->flags))
593 goto done;
594
595 if (!urb->status)
596 hdev->stat.byte_tx += urb->transfer_buffer_length;
597 else
598 hdev->stat.err_tx++;
599
600done:
601 kfree(urb->setup_packet);
602
603 kfree_skb(skb);
604}
605
606static int btusb_open(struct hci_dev *hdev)
607{
155961e8 608 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 609 int err;
610
611 BT_DBG("%s", hdev->name);
612
7bee549e
ON		 613 err = usb_autopm_get_interface(data->intf);
614 if (err < 0)
615 return err;
616
617 data->intf->needs_remote_wakeup = 1;
618
5e23b923 619 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
7bee549e 620 goto done;
5e23b923
MH		 621
622 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
7bee549e 623 goto done;
5e23b923 624
2eda66f4 625 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
43c2e57f
MH		 626 if (err < 0)
627 goto failed;
628
629 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
5e23b923 630 if (err < 0) {
43c2e57f
MH		 631 usb_kill_anchored_urbs(&data->intr_anchor);
632 goto failed;
5e23b923
MH		 633 }
634
43c2e57f
MH		 635 set_bit(BTUSB_BULK_RUNNING, &data->flags);
636 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
637
7bee549e
ON		 638done:
639 usb_autopm_put_interface(data->intf);
43c2e57f
MH		 640 return 0;
641
642failed:
643 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
644 clear_bit(HCI_RUNNING, &hdev->flags);
7bee549e 645 usb_autopm_put_interface(data->intf);
5e23b923
MH		 646 return err;
647}
648
7bee549e
ON		 649static void btusb_stop_traffic(struct btusb_data *data)
650{
651 usb_kill_anchored_urbs(&data->intr_anchor);
652 usb_kill_anchored_urbs(&data->bulk_anchor);
653 usb_kill_anchored_urbs(&data->isoc_anchor);
654}
655
5e23b923
MH		 656static int btusb_close(struct hci_dev *hdev)
657{
155961e8 658 struct btusb_data *data = hci_get_drvdata(hdev);
7bee549e 659 int err;
5e23b923
MH		 660
661 BT_DBG("%s", hdev->name);
662
663 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
664 return 0;
665
e8c3c3d2 666 cancel_work_sync(&data->work);
404291ac 667 cancel_work_sync(&data->waker);
e8c3c3d2 668
9bfa35fe 669 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5e23b923 670 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5e23b923 671 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e
ON		 672
673 btusb_stop_traffic(data);
674 err = usb_autopm_get_interface(data->intf);
675 if (err < 0)
7b8e2c1d 676 goto failed;
7bee549e
ON		 677
678 data->intf->needs_remote_wakeup = 0;
679 usb_autopm_put_interface(data->intf);
5e23b923 680
7b8e2c1d
ON		 681failed:
682 usb_scuttle_anchored_urbs(&data->deferred);
5e23b923
MH		 683 return 0;
684}
685
686static int btusb_flush(struct hci_dev *hdev)
687{
155961e8 688 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 689
690 BT_DBG("%s", hdev->name);
691
692 usb_kill_anchored_urbs(&data->tx_anchor);
693
694 return 0;
695}
696
697static int btusb_send_frame(struct sk_buff *skb)
698{
699 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
155961e8 700 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 701 struct usb_ctrlrequest *dr;
702 struct urb *urb;
703 unsigned int pipe;
704 int err;
705
706 BT_DBG("%s", hdev->name);
707
708 if (!test_bit(HCI_RUNNING, &hdev->flags))
709 return -EBUSY;
710
711 switch (bt_cb(skb)->pkt_type) {
712 case HCI_COMMAND_PKT:
713 urb = usb_alloc_urb(0, GFP_ATOMIC);
714 if (!urb)
715 return -ENOMEM;
716
717 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
718 if (!dr) {
719 usb_free_urb(urb);
720 return -ENOMEM;
721 }
722
7a9d4020 723 dr->bRequestType = data->cmdreq_type;
5e23b923
MH		 724 dr->bRequest = 0;
725 dr->wIndex = 0;
726 dr->wValue = 0;
727 dr->wLength = __cpu_to_le16(skb->len);
728
729 pipe = usb_sndctrlpipe(data->udev, 0x00);
730
731 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
732 skb->data, skb->len, btusb_tx_complete, skb);
733
734 hdev->stat.cmd_tx++;
735 break;
736
737 case HCI_ACLDATA_PKT:
9fd481e0 738 if (!data->bulk_tx_ep)
9bfa35fe
MH		 739 return -ENODEV;
740
5e23b923
MH		 741 urb = usb_alloc_urb(0, GFP_ATOMIC);
742 if (!urb)
743 return -ENOMEM;
744
745 pipe = usb_sndbulkpipe(data->udev,
746 data->bulk_tx_ep->bEndpointAddress);
747
748 usb_fill_bulk_urb(urb, data->udev, pipe,
749 skb->data, skb->len, btusb_tx_complete, skb);
750
751 hdev->stat.acl_tx++;
752 break;
753
754 case HCI_SCODATA_PKT:
9bfa35fe
MH		 755 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
756 return -ENODEV;
757
758 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
759 if (!urb)
760 return -ENOMEM;
761
762 pipe = usb_sndisocpipe(data->udev,
763 data->isoc_tx_ep->bEndpointAddress);
764
03c2d0e8
GP		 765 usb_fill_int_urb(urb, data->udev, pipe,
766 skb->data, skb->len, btusb_isoc_tx_complete,
767 skb, data->isoc_tx_ep->bInterval);
9bfa35fe
MH		 768
769 urb->transfer_flags = URB_ISO_ASAP;
9bfa35fe
MH		 770
771 __fill_isoc_descriptor(urb, skb->len,
772 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
773
5e23b923 774 hdev->stat.sco_tx++;
7bee549e 775 goto skip_waking;
5e23b923
MH		 776
777 default:
778 return -EILSEQ;
779 }
780
7bee549e
ON		 781 err = inc_tx(data);
782 if (err) {
783 usb_anchor_urb(urb, &data->deferred);
784 schedule_work(&data->waker);
785 err = 0;
786 goto done;
787 }
788
789skip_waking:
5e23b923
MH		 790 usb_anchor_urb(urb, &data->tx_anchor);
791
792 err = usb_submit_urb(urb, GFP_ATOMIC);
793 if (err < 0) {
5a9b80e2
PB		 794 if (err != -EPERM && err != -ENODEV)
795 BT_ERR("%s urb %p submission failed (%d)",
796 hdev->name, urb, -err);
5e23b923
MH		 797 kfree(urb->setup_packet);
798 usb_unanchor_urb(urb);
7bee549e
ON		 799 } else {
800 usb_mark_last_busy(data->udev);
5e23b923
MH		 801 }
802
7bee549e 803done:
54a8a79c 804 usb_free_urb(urb);
5e23b923
MH		 805 return err;
806}
807
5e23b923
MH		 808static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
809{
155961e8 810 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 811
812 BT_DBG("%s evt %d", hdev->name, evt);
813
43c2e57f
MH		 814 if (hdev->conn_hash.sco_num != data->sco_num) {
815 data->sco_num = hdev->conn_hash.sco_num;
816 schedule_work(&data->work);
a780efa8 817 }
5e23b923
MH		 818}
819
42b16b3f 820static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
9bfa35fe 821{
155961e8 822 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 823 struct usb_interface *intf = data->isoc;
824 struct usb_endpoint_descriptor *ep_desc;
825 int i, err;
826
827 if (!data->isoc)
828 return -ENODEV;
829
830 err = usb_set_interface(data->udev, 1, altsetting);
831 if (err < 0) {
832 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
833 return err;
834 }
835
836 data->isoc_altsetting = altsetting;
837
838 data->isoc_tx_ep = NULL;
839 data->isoc_rx_ep = NULL;
840
841 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
842 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
843
844 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
845 data->isoc_tx_ep = ep_desc;
846 continue;
847 }
848
849 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
850 data->isoc_rx_ep = ep_desc;
851 continue;
852 }
853 }
854
855 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
856 BT_ERR("%s invalid SCO descriptors", hdev->name);
857 return -ENODEV;
858 }
859
860 return 0;
861}
862
5e23b923
MH		 863static void btusb_work(struct work_struct *work)
864{
865 struct btusb_data *data = container_of(work, struct btusb_data, work);
866 struct hci_dev *hdev = data->hdev;
f4001d28 867 int new_alts;
7bee549e 868 int err;
5e23b923 869
9bfa35fe 870 if (hdev->conn_hash.sco_num > 0) {
08b8b6c4 871 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
8efdd0cd 872 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
7bee549e
ON		 873 if (err < 0) {
874 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
875 usb_kill_anchored_urbs(&data->isoc_anchor);
876 return;
877 }
878
08b8b6c4 879 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
7bee549e 880 }
f4001d28
MA		 881
882 if (hdev->voice_setting & 0x0020) {
883 static const int alts[3] = { 2, 4, 5 };
884 new_alts = alts[hdev->conn_hash.sco_num - 1];
885 } else {
886 new_alts = hdev->conn_hash.sco_num;
887 }
888
889 if (data->isoc_altsetting != new_alts) {
9bfa35fe
MH		 890 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
891 usb_kill_anchored_urbs(&data->isoc_anchor);
892
f4001d28 893 if (__set_isoc_interface(hdev, new_alts) < 0)
9bfa35fe
MH		 894 return;
895 }
896
897 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2eda66f4 898 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
9bfa35fe
MH		 899 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
900 else
2eda66f4 901 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
9bfa35fe
MH		 902 }
903 } else {
904 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
905 usb_kill_anchored_urbs(&data->isoc_anchor);
906
907 __set_isoc_interface(hdev, 0);
08b8b6c4 908 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
8efdd0cd 909 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
5e23b923
MH		 910 }
911}
912
7bee549e
ON		 913static void btusb_waker(struct work_struct *work)
914{
915 struct btusb_data *data = container_of(work, struct btusb_data, waker);
916 int err;
917
918 err = usb_autopm_get_interface(data->intf);
919 if (err < 0)
920 return;
921
922 usb_autopm_put_interface(data->intf);
923}
924
5e23b923
MH		 925static int btusb_probe(struct usb_interface *intf,
926 const struct usb_device_id *id)
927{
928 struct usb_endpoint_descriptor *ep_desc;
929 struct btusb_data *data;
930 struct hci_dev *hdev;
931 int i, err;
932
933 BT_DBG("intf %p id %p", intf, id);
934
cfeb4145 935 /* interface numbers are hardcoded in the spec */
5e23b923
MH		 936 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
937 return -ENODEV;
938
939 if (!id->driver_info) {
940 const struct usb_device_id *match;
941 match = usb_match_id(intf, blacklist_table);
942 if (match)
943 id = match;
944 }
945
cfeb4145
MH		 946 if (id->driver_info == BTUSB_IGNORE)
947 return -ENODEV;
948
949 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
950 return -ENODEV;
951
952 if (ignore_csr && id->driver_info & BTUSB_CSR)
953 return -ENODEV;
954
955 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
956 return -ENODEV;
957
2d25f8b4
SL		 958 if (id->driver_info & BTUSB_ATH3012) {
959 struct usb_device *udev = interface_to_usbdev(intf);
960
961 /* Old firmware would otherwise let ath3k driver load
962 * patch and sysconfig files */
963 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
964 return -ENODEV;
965 }
966
98921dbd 967 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
5e23b923
MH		 968 if (!data)
969 return -ENOMEM;
970
971 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
972 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
973
974 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
975 data->intr_ep = ep_desc;
976 continue;
977 }
978
979 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
980 data->bulk_tx_ep = ep_desc;
981 continue;
982 }
983
984 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
985 data->bulk_rx_ep = ep_desc;
986 continue;
987 }
988 }
989
98921dbd 990 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
5e23b923 991 return -ENODEV;
5e23b923 992
7a9d4020
MH		 993 data->cmdreq_type = USB_TYPE_CLASS;
994
5e23b923 995 data->udev = interface_to_usbdev(intf);
5fbcd260 996 data->intf = intf;
5e23b923
MH		 997
998 spin_lock_init(&data->lock);
999
1000 INIT_WORK(&data->work, btusb_work);
7bee549e
ON		 1001 INIT_WORK(&data->waker, btusb_waker);
1002 spin_lock_init(&data->txlock);
5e23b923
MH		 1003
1004 init_usb_anchor(&data->tx_anchor);
1005 init_usb_anchor(&data->intr_anchor);
1006 init_usb_anchor(&data->bulk_anchor);
9bfa35fe 1007 init_usb_anchor(&data->isoc_anchor);
7bee549e 1008 init_usb_anchor(&data->deferred);
5e23b923
MH		 1009
1010 hdev = hci_alloc_dev();
98921dbd 1011 if (!hdev)
5e23b923 1012 return -ENOMEM;
5e23b923 1013
c13854ce 1014 hdev->bus = HCI_USB;
155961e8 1015 hci_set_drvdata(hdev, data);
5e23b923
MH		 1016
1017 data->hdev = hdev;
1018
1019 SET_HCIDEV_DEV(hdev, &intf->dev);
1020
1021 hdev->open = btusb_open;
1022 hdev->close = btusb_close;
1023 hdev->flush = btusb_flush;
1024 hdev->send = btusb_send_frame;
5e23b923
MH		 1025 hdev->notify = btusb_notify;
1026
7a9d4020 1027 /* Interface numbers are hardcoded in the specification */
9bfa35fe
MH		 1028 data->isoc = usb_ifnum_to_if(data->udev, 1);
1029
7a9d4020 1030 if (!reset)
a6c511c6 1031 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
cfeb4145
MH		 1032
1033 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1034 if (!disable_scofix)
1035 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1036 }
1037
9bfa35fe
MH		 1038 if (id->driver_info & BTUSB_BROKEN_ISOC)
1039 data->isoc = NULL;
1040
7a9d4020
MH		 1041 if (id->driver_info & BTUSB_DIGIANSWER) {
1042 data->cmdreq_type = USB_TYPE_VENDOR;
a6c511c6 1043 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
7a9d4020
MH		 1044 }
1045
1046 if (id->driver_info & BTUSB_CSR) {
1047 struct usb_device *udev = data->udev;
1048
1049 /* Old firmware would otherwise execute USB reset */
1050 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
a6c511c6 1051 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
7a9d4020
MH		 1052 }
1053
cfeb4145 1054 if (id->driver_info & BTUSB_SNIFFER) {
9bfa35fe 1055 struct usb_device *udev = data->udev;
cfeb4145 1056
7a9d4020 1057 /* New sniffer firmware has crippled HCI interface */
cfeb4145
MH		 1058 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1059 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
9bfa35fe
MH		 1060
1061 data->isoc = NULL;
cfeb4145
MH		 1062 }
1063
1064 if (id->driver_info & BTUSB_BCM92035) {
1065 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1066 struct sk_buff *skb;
1067
1068 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1069 if (skb) {
1070 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1071 skb_queue_tail(&hdev->driver_init, skb);
1072 }
1073 }
5e23b923 1074
9bfa35fe
MH		 1075 if (data->isoc) {
1076 err = usb_driver_claim_interface(&btusb_driver,
5fbcd260 1077 data->isoc, data);
9bfa35fe
MH		 1078 if (err < 0) {
1079 hci_free_dev(hdev);
9bfa35fe
MH		 1080 return err;
1081 }
1082 }
1083
5e23b923
MH		 1084 err = hci_register_dev(hdev);
1085 if (err < 0) {
1086 hci_free_dev(hdev);
5e23b923
MH		 1087 return err;
1088 }
1089
1090 usb_set_intfdata(intf, data);
1091
1092 return 0;
1093}
1094
1095static void btusb_disconnect(struct usb_interface *intf)
1096{
1097 struct btusb_data *data = usb_get_intfdata(intf);
1098 struct hci_dev *hdev;
1099
1100 BT_DBG("intf %p", intf);
1101
1102 if (!data)
1103 return;
1104
1105 hdev = data->hdev;
5fbcd260
MH		 1106 usb_set_intfdata(data->intf, NULL);
1107
1108 if (data->isoc)
1109 usb_set_intfdata(data->isoc, NULL);
5e23b923
MH		 1110
1111 hci_unregister_dev(hdev);
1112
5fbcd260
MH		 1113 if (intf == data->isoc)
1114 usb_driver_release_interface(&btusb_driver, data->intf);
1115 else if (data->isoc)
1116 usb_driver_release_interface(&btusb_driver, data->isoc);
1117
5e23b923
MH		 1118 hci_free_dev(hdev);
1119}
1120
7bee549e 1121#ifdef CONFIG_PM
6a88adf2
MH		 1122static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1123{
1124 struct btusb_data *data = usb_get_intfdata(intf);
1125
1126 BT_DBG("intf %p", intf);
1127
1128 if (data->suspend_count++)
1129 return 0;
1130
7bee549e 1131 spin_lock_irq(&data->txlock);
5b1b0b81 1132 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
7bee549e
ON		 1133 set_bit(BTUSB_SUSPENDING, &data->flags);
1134 spin_unlock_irq(&data->txlock);
1135 } else {
1136 spin_unlock_irq(&data->txlock);
1137 data->suspend_count--;
1138 return -EBUSY;
1139 }
1140
6a88adf2
MH		 1141 cancel_work_sync(&data->work);
1142
7bee549e 1143 btusb_stop_traffic(data);
6a88adf2
MH		 1144 usb_kill_anchored_urbs(&data->tx_anchor);
1145
6a88adf2
MH		 1146 return 0;
1147}
1148
7bee549e
ON		 1149static void play_deferred(struct btusb_data *data)
1150{
1151 struct urb *urb;
1152 int err;
1153
1154 while ((urb = usb_get_from_anchor(&data->deferred))) {
1155 err = usb_submit_urb(urb, GFP_ATOMIC);
1156 if (err < 0)
1157 break;
1158
1159 data->tx_in_flight++;
1160 }
1161 usb_scuttle_anchored_urbs(&data->deferred);
1162}
1163
6a88adf2
MH		 1164static int btusb_resume(struct usb_interface *intf)
1165{
1166 struct btusb_data *data = usb_get_intfdata(intf);
1167 struct hci_dev *hdev = data->hdev;
7bee549e 1168 int err = 0;
6a88adf2
MH		 1169
1170 BT_DBG("intf %p", intf);
1171
1172 if (--data->suspend_count)
1173 return 0;
1174
1175 if (!test_bit(HCI_RUNNING, &hdev->flags))
7bee549e 1176 goto done;
6a88adf2
MH		 1177
1178 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1179 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1180 if (err < 0) {
1181 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e 1182 goto failed;
6a88adf2
MH		 1183 }
1184 }
1185
1186 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
43c2e57f
MH		 1187 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1188 if (err < 0) {
6a88adf2 1189 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
7bee549e
ON		 1190 goto failed;
1191 }
1192
1193 btusb_submit_bulk_urb(hdev, GFP_NOIO);
6a88adf2
MH		 1194 }
1195
1196 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1197 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1198 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1199 else
1200 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1201 }
1202
7bee549e
ON		 1203 spin_lock_irq(&data->txlock);
1204 play_deferred(data);
1205 clear_bit(BTUSB_SUSPENDING, &data->flags);
1206 spin_unlock_irq(&data->txlock);
1207 schedule_work(&data->work);
1208
6a88adf2 1209 return 0;
7bee549e
ON		 1210
1211failed:
1212 usb_scuttle_anchored_urbs(&data->deferred);
1213done:
1214 spin_lock_irq(&data->txlock);
1215 clear_bit(BTUSB_SUSPENDING, &data->flags);
1216 spin_unlock_irq(&data->txlock);
1217
1218 return err;
6a88adf2 1219}
7bee549e 1220#endif
6a88adf2 1221
5e23b923
MH		 1222static struct usb_driver btusb_driver = {
1223 .name = "btusb",
1224 .probe = btusb_probe,
1225 .disconnect = btusb_disconnect,
7bee549e 1226#ifdef CONFIG_PM
6a88adf2
MH		 1227 .suspend = btusb_suspend,
1228 .resume = btusb_resume,
7bee549e 1229#endif
5e23b923 1230 .id_table = btusb_table,
7bee549e 1231 .supports_autosuspend = 1,
e1f12eb6 1232 .disable_hub_initiated_lpm = 1,
5e23b923
MH		 1233};
1234
93f1508c 1235module_usb_driver(btusb_driver);
5e23b923 1236
cfeb4145
MH		 1237module_param(ignore_dga, bool, 0644);
1238MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1239
1240module_param(ignore_csr, bool, 0644);
1241MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1242
1243module_param(ignore_sniffer, bool, 0644);
1244MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1245
1246module_param(disable_scofix, bool, 0644);
1247MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1248
1249module_param(force_scofix, bool, 0644);
1250MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1251
1252module_param(reset, bool, 0644);
1253MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1254
5e23b923
MH		 1255MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1256MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1257MODULE_VERSION(VERSION);
1258MODULE_LICENSE("GPL");
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