3 * Digianswer Bluetooth USB driver
5 * Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
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.
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.
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
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>
33 #include <linux/usb.h>
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
40 #define VERSION "0.11"
42 static const struct usb_device_id bpa10x_table[] = {
43 /* Tektronix BPA 100/105 (Digianswer) */
44 { USB_DEVICE(0x08fd, 0x0002) },
46 { } /* Terminating entry */
49 MODULE_DEVICE_TABLE(usb, bpa10x_table);
53 struct usb_device *udev;
55 struct usb_anchor tx_anchor;
56 struct usb_anchor rx_anchor;
58 struct sk_buff *rx_skb[2];
61 static void bpa10x_tx_complete(struct urb *urb)
63 struct sk_buff *skb = urb->context;
64 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
66 BT_DBG("%s urb %p status %d count %d", hdev->name,
67 urb, urb->status, urb->actual_length);
69 if (!test_bit(HCI_RUNNING, &hdev->flags))
73 hdev->stat.byte_tx += urb->transfer_buffer_length;
78 kfree(urb->setup_packet);
83 #define HCI_VENDOR_HDR_SIZE 5
85 #define HCI_RECV_VENDOR \
86 .type = HCI_VENDOR_PKT, \
87 .hlen = HCI_VENDOR_HDR_SIZE, \
90 .maxlen = HCI_MAX_FRAME_SIZE
92 static 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 },
99 static void bpa10x_rx_complete(struct urb *urb)
101 struct hci_dev *hdev = urb->context;
102 struct bpa10x_data *data = hci_get_drvdata(hdev);
105 BT_DBG("%s urb %p status %d count %d", hdev->name,
106 urb, urb->status, urb->actual_length);
108 if (!test_bit(HCI_RUNNING, &hdev->flags))
111 if (urb->status == 0) {
112 bool idx = usb_pipebulk(urb->pipe);
114 data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx],
115 urb->transfer_buffer,
118 ARRAY_SIZE(bpa10x_recv_pkts));
119 if (IS_ERR(data->rx_skb[idx])) {
120 BT_ERR("%s corrupted event packet", hdev->name);
122 data->rx_skb[idx] = NULL;
126 usb_anchor_urb(urb, &data->rx_anchor);
128 err = usb_submit_urb(urb, GFP_ATOMIC);
130 BT_ERR("%s urb %p failed to resubmit (%d)",
131 hdev->name, urb, -err);
132 usb_unanchor_urb(urb);
136 static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
138 struct bpa10x_data *data = hci_get_drvdata(hdev);
144 BT_DBG("%s", hdev->name);
146 urb = usb_alloc_urb(0, GFP_KERNEL);
150 buf = kmalloc(size, GFP_KERNEL);
156 pipe = usb_rcvintpipe(data->udev, 0x81);
158 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
159 bpa10x_rx_complete, hdev, 1);
161 urb->transfer_flags |= URB_FREE_BUFFER;
163 usb_anchor_urb(urb, &data->rx_anchor);
165 err = usb_submit_urb(urb, GFP_KERNEL);
167 BT_ERR("%s urb %p submission failed (%d)",
168 hdev->name, urb, -err);
169 usb_unanchor_urb(urb);
177 static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
179 struct bpa10x_data *data = hci_get_drvdata(hdev);
185 BT_DBG("%s", hdev->name);
187 urb = usb_alloc_urb(0, GFP_KERNEL);
191 buf = kmalloc(size, GFP_KERNEL);
197 pipe = usb_rcvbulkpipe(data->udev, 0x82);
199 usb_fill_bulk_urb(urb, data->udev, pipe,
200 buf, size, bpa10x_rx_complete, hdev);
202 urb->transfer_flags |= URB_FREE_BUFFER;
204 usb_anchor_urb(urb, &data->rx_anchor);
206 err = usb_submit_urb(urb, GFP_KERNEL);
208 BT_ERR("%s urb %p submission failed (%d)",
209 hdev->name, urb, -err);
210 usb_unanchor_urb(urb);
218 static int bpa10x_open(struct hci_dev *hdev)
220 struct bpa10x_data *data = hci_get_drvdata(hdev);
223 BT_DBG("%s", hdev->name);
225 err = bpa10x_submit_intr_urb(hdev);
229 err = bpa10x_submit_bulk_urb(hdev);
236 usb_kill_anchored_urbs(&data->rx_anchor);
241 static int bpa10x_close(struct hci_dev *hdev)
243 struct bpa10x_data *data = hci_get_drvdata(hdev);
245 BT_DBG("%s", hdev->name);
247 usb_kill_anchored_urbs(&data->rx_anchor);
252 static int bpa10x_flush(struct hci_dev *hdev)
254 struct bpa10x_data *data = hci_get_drvdata(hdev);
256 BT_DBG("%s", hdev->name);
258 usb_kill_anchored_urbs(&data->tx_anchor);
263 static int bpa10x_setup(struct hci_dev *hdev)
265 const u8 req[] = { 0x07 };
268 BT_DBG("%s", hdev->name);
270 /* Read revision string */
271 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
275 BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
277 hci_set_fw_info(hdev, "%s", skb->data + 1);
283 static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
285 struct bpa10x_data *data = hci_get_drvdata(hdev);
286 struct usb_ctrlrequest *dr;
291 BT_DBG("%s", hdev->name);
293 skb->dev = (void *) hdev;
295 urb = usb_alloc_urb(0, GFP_ATOMIC);
299 /* Prepend skb with frame type */
300 *skb_push(skb, 1) = hci_skb_pkt_type(skb);
302 switch (hci_skb_pkt_type(skb)) {
303 case HCI_COMMAND_PKT:
304 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
310 dr->bRequestType = USB_TYPE_VENDOR;
314 dr->wLength = __cpu_to_le16(skb->len);
316 pipe = usb_sndctrlpipe(data->udev, 0x00);
318 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
319 skb->data, skb->len, bpa10x_tx_complete, skb);
324 case HCI_ACLDATA_PKT:
325 pipe = usb_sndbulkpipe(data->udev, 0x02);
327 usb_fill_bulk_urb(urb, data->udev, pipe,
328 skb->data, skb->len, bpa10x_tx_complete, skb);
333 case HCI_SCODATA_PKT:
334 pipe = usb_sndbulkpipe(data->udev, 0x02);
336 usb_fill_bulk_urb(urb, data->udev, pipe,
337 skb->data, skb->len, bpa10x_tx_complete, skb);
347 usb_anchor_urb(urb, &data->tx_anchor);
349 err = usb_submit_urb(urb, GFP_ATOMIC);
351 BT_ERR("%s urb %p submission failed", hdev->name, urb);
352 kfree(urb->setup_packet);
353 usb_unanchor_urb(urb);
361 static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)
363 const u8 req[] = { 0x00, enable };
366 BT_DBG("%s", hdev->name);
368 if (!test_bit(HCI_RUNNING, &hdev->flags))
371 /* Enable sniffer operation */
372 skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
380 static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id)
382 struct bpa10x_data *data;
383 struct hci_dev *hdev;
386 BT_DBG("intf %p id %p", intf, id);
388 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
391 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
395 data->udev = interface_to_usbdev(intf);
397 init_usb_anchor(&data->tx_anchor);
398 init_usb_anchor(&data->rx_anchor);
400 hdev = hci_alloc_dev();
405 hci_set_drvdata(hdev, data);
409 SET_HCIDEV_DEV(hdev, &intf->dev);
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;
418 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
420 err = hci_register_dev(hdev);
426 usb_set_intfdata(intf, data);
431 static void bpa10x_disconnect(struct usb_interface *intf)
433 struct bpa10x_data *data = usb_get_intfdata(intf);
435 BT_DBG("intf %p", intf);
440 usb_set_intfdata(intf, NULL);
442 hci_unregister_dev(data->hdev);
444 hci_free_dev(data->hdev);
445 kfree_skb(data->rx_skb[0]);
446 kfree_skb(data->rx_skb[1]);
449 static struct usb_driver bpa10x_driver = {
451 .probe = bpa10x_probe,
452 .disconnect = bpa10x_disconnect,
453 .id_table = bpa10x_table,
454 .disable_hub_initiated_lpm = 1,
457 module_usb_driver(bpa10x_driver);
459 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
460 MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
461 MODULE_VERSION(VERSION);
462 MODULE_LICENSE("GPL");