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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Digianswer Bluetooth USB driver
5 *
6 * Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/types.h>
14#include <linux/sched.h>
15#include <linux/errno.h>
16#include <linux/skbuff.h>
17
18#include <linux/usb.h>
19
20#include <net/bluetooth/bluetooth.h>
21#include <net/bluetooth/hci_core.h>
22
23#include "h4_recv.h"
24
25#define VERSION "0.11"
26
27static const struct usb_device_id bpa10x_table[] = {
28 /* Tektronix BPA 100/105 (Digianswer) */
29 { USB_DEVICE(0x08fd, 0x0002) },
30
31 { } /* Terminating entry */
32};
33
34MODULE_DEVICE_TABLE(usb, bpa10x_table);
35
36struct bpa10x_data {
37 struct hci_dev *hdev;
38 struct usb_device *udev;
39
40 struct usb_anchor tx_anchor;
41 struct usb_anchor rx_anchor;
42
43 struct sk_buff *rx_skb[2];
44};
45
46static void bpa10x_tx_complete(struct urb *urb)
47{
48 struct sk_buff *skb = urb->context;
49 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
50
51 BT_DBG("%s urb %p status %d count %d", hdev->name,
52 urb, urb->status, urb->actual_length);
53
54 if (!test_bit(HCI_RUNNING, &hdev->flags))
55 goto done;
56
57 if (!urb->status)
58 hdev->stat.byte_tx += urb->transfer_buffer_length;
59 else
60 hdev->stat.err_tx++;
61
62done:
63 kfree(urb->setup_packet);
64
65 kfree_skb(skb);
66}
67
68#define HCI_VENDOR_HDR_SIZE 5
69
70#define HCI_RECV_VENDOR \
71 .type = HCI_VENDOR_PKT, \
72 .hlen = HCI_VENDOR_HDR_SIZE, \
73 .loff = 3, \
74 .lsize = 2, \
75 .maxlen = HCI_MAX_FRAME_SIZE
76
77static const struct h4_recv_pkt bpa10x_recv_pkts[] = {
78 { H4_RECV_ACL, .recv = hci_recv_frame },
79 { H4_RECV_SCO, .recv = hci_recv_frame },
80 { H4_RECV_EVENT, .recv = hci_recv_frame },
81 { HCI_RECV_VENDOR, .recv = hci_recv_diag },
82};
83
84static void bpa10x_rx_complete(struct urb *urb)
85{
86 struct hci_dev *hdev = urb->context;
87 struct bpa10x_data *data = hci_get_drvdata(hdev);
88 int err;
89
90 BT_DBG("%s urb %p status %d count %d", hdev->name,
91 urb, urb->status, urb->actual_length);
92
93 if (!test_bit(HCI_RUNNING, &hdev->flags))
94 return;
95
96 if (urb->status == 0) {
97 bool idx = usb_pipebulk(urb->pipe);
98
99 data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx],
100 urb->transfer_buffer,
101 urb->actual_length,
102 bpa10x_recv_pkts,
103 ARRAY_SIZE(bpa10x_recv_pkts));
104 if (IS_ERR(data->rx_skb[idx])) {
105 bt_dev_err(hdev, "corrupted event packet");
106 hdev->stat.err_rx++;
107 data->rx_skb[idx] = NULL;
108 }
109 }
110
111 usb_anchor_urb(urb, &data->rx_anchor);
112
113 err = usb_submit_urb(urb, GFP_ATOMIC);
114 if (err < 0) {
115 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", urb, -err);
116 usb_unanchor_urb(urb);
117 }
118}
119
120static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
121{
122 struct bpa10x_data *data = hci_get_drvdata(hdev);
123 struct urb *urb;
124 unsigned char *buf;
125 unsigned int pipe;
126 int err, size = 16;
127
128 BT_DBG("%s", hdev->name);
129
130 urb = usb_alloc_urb(0, GFP_KERNEL);
131 if (!urb)
132 return -ENOMEM;
133
134 buf = kmalloc(size, GFP_KERNEL);
135 if (!buf) {
136 usb_free_urb(urb);
137 return -ENOMEM;
138 }
139
140 pipe = usb_rcvintpipe(data->udev, 0x81);
141
142 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
143 bpa10x_rx_complete, hdev, 1);
144
145 urb->transfer_flags |= URB_FREE_BUFFER;
146
147 usb_anchor_urb(urb, &data->rx_anchor);
148
149 err = usb_submit_urb(urb, GFP_KERNEL);
150 if (err < 0) {
151 bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err);
152 usb_unanchor_urb(urb);
153 }
154
155 usb_free_urb(urb);
156
157 return err;
158}
159
160static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
161{
162 struct bpa10x_data *data = hci_get_drvdata(hdev);
163 struct urb *urb;
164 unsigned char *buf;
165 unsigned int pipe;
166 int err, size = 64;
167
168 BT_DBG("%s", hdev->name);
169
170 urb = usb_alloc_urb(0, GFP_KERNEL);
171 if (!urb)
172 return -ENOMEM;
173
174 buf = kmalloc(size, GFP_KERNEL);
175 if (!buf) {
176 usb_free_urb(urb);
177 return -ENOMEM;
178 }
179
180 pipe = usb_rcvbulkpipe(data->udev, 0x82);
181
182 usb_fill_bulk_urb(urb, data->udev, pipe,
183 buf, size, bpa10x_rx_complete, hdev);
184
185 urb->transfer_flags |= URB_FREE_BUFFER;
186
187 usb_anchor_urb(urb, &data->rx_anchor);
188
189 err = usb_submit_urb(urb, GFP_KERNEL);
190 if (err < 0) {
191 bt_dev_err(hdev, "urb %p submission failed (%d)", urb, -err);
192 usb_unanchor_urb(urb);
193 }
194
195 usb_free_urb(urb);
196
197 return err;
198}
199
200static int bpa10x_open(struct hci_dev *hdev)
201{
202 struct bpa10x_data *data = hci_get_drvdata(hdev);
203 int err;
204
205 BT_DBG("%s", hdev->name);
206
207 err = bpa10x_submit_intr_urb(hdev);
208 if (err < 0)
209 goto error;
210
211 err = bpa10x_submit_bulk_urb(hdev);
212 if (err < 0)
213 goto error;
214
215 return 0;
216
217error:
218 usb_kill_anchored_urbs(&data->rx_anchor);
219
220 return err;
221}
222
223static int bpa10x_close(struct hci_dev *hdev)
224{
225 struct bpa10x_data *data = hci_get_drvdata(hdev);
226
227 BT_DBG("%s", hdev->name);
228
229 usb_kill_anchored_urbs(&data->rx_anchor);
230
231 return 0;
232}
233
234static int bpa10x_flush(struct hci_dev *hdev)
235{
236 struct bpa10x_data *data = hci_get_drvdata(hdev);
237
238 BT_DBG("%s", hdev->name);
239
240 usb_kill_anchored_urbs(&data->tx_anchor);
241
242 return 0;
243}
244
245static int bpa10x_setup(struct hci_dev *hdev)
246{
247 static const u8 req[] = { 0x07 };
248 struct sk_buff *skb;
249
250 BT_DBG("%s", hdev->name);
251
252 /* Read revision string */
253 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
254 if (IS_ERR(skb))
255 return PTR_ERR(skb);
256
257 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
258
259 hci_set_fw_info(hdev, "%s", skb->data + 1);
260
261 kfree_skb(skb);
262 return 0;
263}
264
265static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
266{
267 struct bpa10x_data *data = hci_get_drvdata(hdev);
268 struct usb_ctrlrequest *dr;
269 struct urb *urb;
270 unsigned int pipe;
271 int err;
272
273 BT_DBG("%s", hdev->name);
274
275 skb->dev = (void *) hdev;
276
277 urb = usb_alloc_urb(0, GFP_KERNEL);
278 if (!urb)
279 return -ENOMEM;
280
281 /* Prepend skb with frame type */
282 *(u8 *)skb_push(skb, 1) = hci_skb_pkt_type(skb);
283
284 switch (hci_skb_pkt_type(skb)) {
285 case HCI_COMMAND_PKT:
286 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
287 if (!dr) {
288 usb_free_urb(urb);
289 return -ENOMEM;
290 }
291
292 dr->bRequestType = USB_TYPE_VENDOR;
293 dr->bRequest = 0;
294 dr->wIndex = 0;
295 dr->wValue = 0;
296 dr->wLength = __cpu_to_le16(skb->len);
297
298 pipe = usb_sndctrlpipe(data->udev, 0x00);
299
300 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
301 skb->data, skb->len, bpa10x_tx_complete, skb);
302
303 hdev->stat.cmd_tx++;
304 break;
305
306 case HCI_ACLDATA_PKT:
307 pipe = usb_sndbulkpipe(data->udev, 0x02);
308
309 usb_fill_bulk_urb(urb, data->udev, pipe,
310 skb->data, skb->len, bpa10x_tx_complete, skb);
311
312 hdev->stat.acl_tx++;
313 break;
314
315 case HCI_SCODATA_PKT:
316 pipe = usb_sndbulkpipe(data->udev, 0x02);
317
318 usb_fill_bulk_urb(urb, data->udev, pipe,
319 skb->data, skb->len, bpa10x_tx_complete, skb);
320
321 hdev->stat.sco_tx++;
322 break;
323
324 default:
325 usb_free_urb(urb);
326 return -EILSEQ;
327 }
328
329 usb_anchor_urb(urb, &data->tx_anchor);
330
331 err = usb_submit_urb(urb, GFP_KERNEL);
332 if (err < 0) {
333 bt_dev_err(hdev, "urb %p submission failed", urb);
334 kfree(urb->setup_packet);
335 usb_unanchor_urb(urb);
336 }
337
338 usb_free_urb(urb);
339
340 return err;
341}
342
343static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)
344{
345 const u8 req[] = { 0x00, enable };
346 struct sk_buff *skb;
347
348 BT_DBG("%s", hdev->name);
349
350 if (!test_bit(HCI_RUNNING, &hdev->flags))
351 return -ENETDOWN;
352
353 /* Enable sniffer operation */
354 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
355 if (IS_ERR(skb))
356 return PTR_ERR(skb);
357
358 kfree_skb(skb);
359 return 0;
360}
361
362static int bpa10x_probe(struct usb_interface *intf,
363 const struct usb_device_id *id)
364{
365 struct bpa10x_data *data;
366 struct hci_dev *hdev;
367 int err;
368
369 BT_DBG("intf %p id %p", intf, id);
370
371 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
372 return -ENODEV;
373
374 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
375 if (!data)
376 return -ENOMEM;
377
378 data->udev = interface_to_usbdev(intf);
379
380 init_usb_anchor(&data->tx_anchor);
381 init_usb_anchor(&data->rx_anchor);
382
383 hdev = hci_alloc_dev();
384 if (!hdev)
385 return -ENOMEM;
386
387 hdev->bus = HCI_USB;
388 hci_set_drvdata(hdev, data);
389
390 data->hdev = hdev;
391
392 SET_HCIDEV_DEV(hdev, &intf->dev);
393
394 hdev->open = bpa10x_open;
395 hdev->close = bpa10x_close;
396 hdev->flush = bpa10x_flush;
397 hdev->setup = bpa10x_setup;
398 hdev->send = bpa10x_send_frame;
399 hdev->set_diag = bpa10x_set_diag;
400
401 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
402
403 err = hci_register_dev(hdev);
404 if (err < 0) {
405 hci_free_dev(hdev);
406 return err;
407 }
408
409 usb_set_intfdata(intf, data);
410
411 return 0;
412}
413
414static void bpa10x_disconnect(struct usb_interface *intf)
415{
416 struct bpa10x_data *data = usb_get_intfdata(intf);
417
418 BT_DBG("intf %p", intf);
419
420 if (!data)
421 return;
422
423 usb_set_intfdata(intf, NULL);
424
425 hci_unregister_dev(data->hdev);
426
427 hci_free_dev(data->hdev);
428 kfree_skb(data->rx_skb[0]);
429 kfree_skb(data->rx_skb[1]);
430}
431
432static struct usb_driver bpa10x_driver = {
433 .name = "bpa10x",
434 .probe = bpa10x_probe,
435 .disconnect = bpa10x_disconnect,
436 .id_table = bpa10x_table,
437 .disable_hub_initiated_lpm = 1,
438};
439
440module_usb_driver(bpa10x_driver);
441
442MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
443MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
444MODULE_VERSION(VERSION);
445MODULE_LICENSE("GPL");
1/*
2 *
3 * Digianswer Bluetooth USB driver
4 *
5 * Copyright (C) 2004-2007 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#include "hci_uart.h"
39
40#define VERSION "0.11"
41
42static const struct usb_device_id bpa10x_table[] = {
43 /* Tektronix BPA 100/105 (Digianswer) */
44 { USB_DEVICE(0x08fd, 0x0002) },
45
46 { } /* Terminating entry */
47};
48
49MODULE_DEVICE_TABLE(usb, bpa10x_table);
50
51struct bpa10x_data {
52 struct hci_dev *hdev;
53 struct usb_device *udev;
54
55 struct usb_anchor tx_anchor;
56 struct usb_anchor rx_anchor;
57
58 struct sk_buff *rx_skb[2];
59};
60
61static void bpa10x_tx_complete(struct urb *urb)
62{
63 struct sk_buff *skb = urb->context;
64 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
65
66 BT_DBG("%s urb %p status %d count %d", hdev->name,
67 urb, urb->status, urb->actual_length);
68
69 if (!test_bit(HCI_RUNNING, &hdev->flags))
70 goto done;
71
72 if (!urb->status)
73 hdev->stat.byte_tx += urb->transfer_buffer_length;
74 else
75 hdev->stat.err_tx++;
76
77done:
78 kfree(urb->setup_packet);
79
80 kfree_skb(skb);
81}
82
83#define HCI_VENDOR_HDR_SIZE 5
84
85#define HCI_RECV_VENDOR \
86 .type = HCI_VENDOR_PKT, \
87 .hlen = HCI_VENDOR_HDR_SIZE, \
88 .loff = 3, \
89 .lsize = 2, \
90 .maxlen = HCI_MAX_FRAME_SIZE
91
92static const struct h4_recv_pkt bpa10x_recv_pkts[] = {
93 { H4_RECV_ACL, .recv = hci_recv_frame },
94 { H4_RECV_SCO, .recv = hci_recv_frame },
95 { H4_RECV_EVENT, .recv = hci_recv_frame },
96 { HCI_RECV_VENDOR, .recv = hci_recv_diag },
97};
98
99static void bpa10x_rx_complete(struct urb *urb)
100{
101 struct hci_dev *hdev = urb->context;
102 struct bpa10x_data *data = hci_get_drvdata(hdev);
103 int err;
104
105 BT_DBG("%s urb %p status %d count %d", hdev->name,
106 urb, urb->status, urb->actual_length);
107
108 if (!test_bit(HCI_RUNNING, &hdev->flags))
109 return;
110
111 if (urb->status == 0) {
112 bool idx = usb_pipebulk(urb->pipe);
113
114 data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx],
115 urb->transfer_buffer,
116 urb->actual_length,
117 bpa10x_recv_pkts,
118 ARRAY_SIZE(bpa10x_recv_pkts));
119 if (IS_ERR(data->rx_skb[idx])) {
120 BT_ERR("%s corrupted event packet", hdev->name);
121 hdev->stat.err_rx++;
122 data->rx_skb[idx] = NULL;
123 }
124 }
125
126 usb_anchor_urb(urb, &data->rx_anchor);
127
128 err = usb_submit_urb(urb, GFP_ATOMIC);
129 if (err < 0) {
130 BT_ERR("%s urb %p failed to resubmit (%d)",
131 hdev->name, urb, -err);
132 usb_unanchor_urb(urb);
133 }
134}
135
136static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
137{
138 struct bpa10x_data *data = hci_get_drvdata(hdev);
139 struct urb *urb;
140 unsigned char *buf;
141 unsigned int pipe;
142 int err, size = 16;
143
144 BT_DBG("%s", hdev->name);
145
146 urb = usb_alloc_urb(0, GFP_KERNEL);
147 if (!urb)
148 return -ENOMEM;
149
150 buf = kmalloc(size, GFP_KERNEL);
151 if (!buf) {
152 usb_free_urb(urb);
153 return -ENOMEM;
154 }
155
156 pipe = usb_rcvintpipe(data->udev, 0x81);
157
158 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
159 bpa10x_rx_complete, hdev, 1);
160
161 urb->transfer_flags |= URB_FREE_BUFFER;
162
163 usb_anchor_urb(urb, &data->rx_anchor);
164
165 err = usb_submit_urb(urb, GFP_KERNEL);
166 if (err < 0) {
167 BT_ERR("%s urb %p submission failed (%d)",
168 hdev->name, urb, -err);
169 usb_unanchor_urb(urb);
170 }
171
172 usb_free_urb(urb);
173
174 return err;
175}
176
177static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
178{
179 struct bpa10x_data *data = hci_get_drvdata(hdev);
180 struct urb *urb;
181 unsigned char *buf;
182 unsigned int pipe;
183 int err, size = 64;
184
185 BT_DBG("%s", hdev->name);
186
187 urb = usb_alloc_urb(0, GFP_KERNEL);
188 if (!urb)
189 return -ENOMEM;
190
191 buf = kmalloc(size, GFP_KERNEL);
192 if (!buf) {
193 usb_free_urb(urb);
194 return -ENOMEM;
195 }
196
197 pipe = usb_rcvbulkpipe(data->udev, 0x82);
198
199 usb_fill_bulk_urb(urb, data->udev, pipe,
200 buf, size, bpa10x_rx_complete, hdev);
201
202 urb->transfer_flags |= URB_FREE_BUFFER;
203
204 usb_anchor_urb(urb, &data->rx_anchor);
205
206 err = usb_submit_urb(urb, GFP_KERNEL);
207 if (err < 0) {
208 BT_ERR("%s urb %p submission failed (%d)",
209 hdev->name, urb, -err);
210 usb_unanchor_urb(urb);
211 }
212
213 usb_free_urb(urb);
214
215 return err;
216}
217
218static int bpa10x_open(struct hci_dev *hdev)
219{
220 struct bpa10x_data *data = hci_get_drvdata(hdev);
221 int err;
222
223 BT_DBG("%s", hdev->name);
224
225 err = bpa10x_submit_intr_urb(hdev);
226 if (err < 0)
227 goto error;
228
229 err = bpa10x_submit_bulk_urb(hdev);
230 if (err < 0)
231 goto error;
232
233 return 0;
234
235error:
236 usb_kill_anchored_urbs(&data->rx_anchor);
237
238 return err;
239}
240
241static int bpa10x_close(struct hci_dev *hdev)
242{
243 struct bpa10x_data *data = hci_get_drvdata(hdev);
244
245 BT_DBG("%s", hdev->name);
246
247 usb_kill_anchored_urbs(&data->rx_anchor);
248
249 return 0;
250}
251
252static int bpa10x_flush(struct hci_dev *hdev)
253{
254 struct bpa10x_data *data = hci_get_drvdata(hdev);
255
256 BT_DBG("%s", hdev->name);
257
258 usb_kill_anchored_urbs(&data->tx_anchor);
259
260 return 0;
261}
262
263static int bpa10x_setup(struct hci_dev *hdev)
264{
265 const u8 req[] = { 0x07 };
266 struct sk_buff *skb;
267
268 BT_DBG("%s", hdev->name);
269
270 /* Read revision string */
271 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
272 if (IS_ERR(skb))
273 return PTR_ERR(skb);
274
275 BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
276
277 hci_set_fw_info(hdev, "%s", skb->data + 1);
278
279 kfree_skb(skb);
280 return 0;
281}
282
283static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
284{
285 struct bpa10x_data *data = hci_get_drvdata(hdev);
286 struct usb_ctrlrequest *dr;
287 struct urb *urb;
288 unsigned int pipe;
289 int err;
290
291 BT_DBG("%s", hdev->name);
292
293 skb->dev = (void *) hdev;
294
295 urb = usb_alloc_urb(0, GFP_ATOMIC);
296 if (!urb)
297 return -ENOMEM;
298
299 /* Prepend skb with frame type */
300 *skb_push(skb, 1) = hci_skb_pkt_type(skb);
301
302 switch (hci_skb_pkt_type(skb)) {
303 case HCI_COMMAND_PKT:
304 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
305 if (!dr) {
306 usb_free_urb(urb);
307 return -ENOMEM;
308 }
309
310 dr->bRequestType = USB_TYPE_VENDOR;
311 dr->bRequest = 0;
312 dr->wIndex = 0;
313 dr->wValue = 0;
314 dr->wLength = __cpu_to_le16(skb->len);
315
316 pipe = usb_sndctrlpipe(data->udev, 0x00);
317
318 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
319 skb->data, skb->len, bpa10x_tx_complete, skb);
320
321 hdev->stat.cmd_tx++;
322 break;
323
324 case HCI_ACLDATA_PKT:
325 pipe = usb_sndbulkpipe(data->udev, 0x02);
326
327 usb_fill_bulk_urb(urb, data->udev, pipe,
328 skb->data, skb->len, bpa10x_tx_complete, skb);
329
330 hdev->stat.acl_tx++;
331 break;
332
333 case HCI_SCODATA_PKT:
334 pipe = usb_sndbulkpipe(data->udev, 0x02);
335
336 usb_fill_bulk_urb(urb, data->udev, pipe,
337 skb->data, skb->len, bpa10x_tx_complete, skb);
338
339 hdev->stat.sco_tx++;
340 break;
341
342 default:
343 usb_free_urb(urb);
344 return -EILSEQ;
345 }
346
347 usb_anchor_urb(urb, &data->tx_anchor);
348
349 err = usb_submit_urb(urb, GFP_ATOMIC);
350 if (err < 0) {
351 BT_ERR("%s urb %p submission failed", hdev->name, urb);
352 kfree(urb->setup_packet);
353 usb_unanchor_urb(urb);
354 }
355
356 usb_free_urb(urb);
357
358 return 0;
359}
360
361static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)
362{
363 const u8 req[] = { 0x00, enable };
364 struct sk_buff *skb;
365
366 BT_DBG("%s", hdev->name);
367
368 if (!test_bit(HCI_RUNNING, &hdev->flags))
369 return -ENETDOWN;
370
371 /* Enable sniffer operation */
372 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
373 if (IS_ERR(skb))
374 return PTR_ERR(skb);
375
376 kfree_skb(skb);
377 return 0;
378}
379
380static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id)
381{
382 struct bpa10x_data *data;
383 struct hci_dev *hdev;
384 int err;
385
386 BT_DBG("intf %p id %p", intf, id);
387
388 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
389 return -ENODEV;
390
391 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
392 if (!data)
393 return -ENOMEM;
394
395 data->udev = interface_to_usbdev(intf);
396
397 init_usb_anchor(&data->tx_anchor);
398 init_usb_anchor(&data->rx_anchor);
399
400 hdev = hci_alloc_dev();
401 if (!hdev)
402 return -ENOMEM;
403
404 hdev->bus = HCI_USB;
405 hci_set_drvdata(hdev, data);
406
407 data->hdev = hdev;
408
409 SET_HCIDEV_DEV(hdev, &intf->dev);
410
411 hdev->open = bpa10x_open;
412 hdev->close = bpa10x_close;
413 hdev->flush = bpa10x_flush;
414 hdev->setup = bpa10x_setup;
415 hdev->send = bpa10x_send_frame;
416 hdev->set_diag = bpa10x_set_diag;
417
418 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
419
420 err = hci_register_dev(hdev);
421 if (err < 0) {
422 hci_free_dev(hdev);
423 return err;
424 }
425
426 usb_set_intfdata(intf, data);
427
428 return 0;
429}
430
431static void bpa10x_disconnect(struct usb_interface *intf)
432{
433 struct bpa10x_data *data = usb_get_intfdata(intf);
434
435 BT_DBG("intf %p", intf);
436
437 if (!data)
438 return;
439
440 usb_set_intfdata(intf, NULL);
441
442 hci_unregister_dev(data->hdev);
443
444 hci_free_dev(data->hdev);
445 kfree_skb(data->rx_skb[0]);
446 kfree_skb(data->rx_skb[1]);
447}
448
449static struct usb_driver bpa10x_driver = {
450 .name = "bpa10x",
451 .probe = bpa10x_probe,
452 .disconnect = bpa10x_disconnect,
453 .id_table = bpa10x_table,
454 .disable_hub_initiated_lpm = 1,
455};
456
457module_usb_driver(bpa10x_driver);
458
459MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
460MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
461MODULE_VERSION(VERSION);
462MODULE_LICENSE("GPL");