1 /* 2 * 3 * AVM BlueFRITZ! USB driver 4 * 5 * Copyright (C) 2003 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/config.h> 25 #include <linux/module.h> 26 27 #include <linux/kernel.h> 28 #include <linux/init.h> 29 #include <linux/slab.h> 30 #include <linux/types.h> 31 #include <linux/sched.h> 32 #include <linux/errno.h> 33 #include <linux/skbuff.h> 34 35 #include <linux/device.h> 36 #include <linux/firmware.h> 37 38 #include <linux/usb.h> 39 40 #include <net/bluetooth/bluetooth.h> 41 #include <net/bluetooth/hci_core.h> 42 43 #ifndef CONFIG_BT_HCIBFUSB_DEBUG 44 #undef BT_DBG 45 #define BT_DBG(D...) 46 #endif 47 48 #define VERSION "1.1" 49 50 static int ignore = 0; 51 52 static struct usb_driver bfusb_driver; 53 54 static struct usb_device_id bfusb_table[] = { 55 /* AVM BlueFRITZ! USB */ 56 { USB_DEVICE(0x057c, 0x2200) }, 57 58 { } /* Terminating entry */ 59 }; 60 61 MODULE_DEVICE_TABLE(usb, bfusb_table); 62 63 64 #define BFUSB_MAX_BLOCK_SIZE 256 65 66 #define BFUSB_BLOCK_TIMEOUT 3000 67 68 #define BFUSB_TX_PROCESS 1 69 #define BFUSB_TX_WAKEUP 2 70 71 #define BFUSB_MAX_BULK_TX 2 72 #define BFUSB_MAX_BULK_RX 2 73 74 struct bfusb { 75 struct hci_dev *hdev; 76 77 unsigned long state; 78 79 struct usb_device *udev; 80 81 unsigned int bulk_in_ep; 82 unsigned int bulk_out_ep; 83 unsigned int bulk_pkt_size; 84 85 rwlock_t lock; 86 87 struct sk_buff_head transmit_q; 88 89 struct sk_buff *reassembly; 90 91 atomic_t pending_tx; 92 struct sk_buff_head pending_q; 93 struct sk_buff_head completed_q; 94 }; 95 96 struct bfusb_scb { 97 struct urb *urb; 98 }; 99 100 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs); 101 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs); 102 103 static struct urb *bfusb_get_completed(struct bfusb *bfusb) 104 { 105 struct sk_buff *skb; 106 struct urb *urb = NULL; 107 108 BT_DBG("bfusb %p", bfusb); 109 110 skb = skb_dequeue(&bfusb->completed_q); 111 if (skb) { 112 urb = ((struct bfusb_scb *) skb->cb)->urb; 113 kfree_skb(skb); 114 } 115 116 return urb; 117 } 118 119 static void bfusb_unlink_urbs(struct bfusb *bfusb) 120 { 121 struct sk_buff *skb; 122 struct urb *urb; 123 124 BT_DBG("bfusb %p", bfusb); 125 126 while ((skb = skb_dequeue(&bfusb->pending_q))) { 127 urb = ((struct bfusb_scb *) skb->cb)->urb; 128 usb_kill_urb(urb); 129 skb_queue_tail(&bfusb->completed_q, skb); 130 } 131 132 while ((urb = bfusb_get_completed(bfusb))) 133 usb_free_urb(urb); 134 } 135 136 137 static int bfusb_send_bulk(struct bfusb *bfusb, struct sk_buff *skb) 138 { 139 struct bfusb_scb *scb = (void *) skb->cb; 140 struct urb *urb = bfusb_get_completed(bfusb); 141 int err, pipe; 142 143 BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len); 144 145 if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) 146 return -ENOMEM; 147 148 pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep); 149 150 usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, skb->len, 151 bfusb_tx_complete, skb); 152 153 scb->urb = urb; 154 155 skb_queue_tail(&bfusb->pending_q, skb); 156 157 err = usb_submit_urb(urb, GFP_ATOMIC); 158 if (err) { 159 BT_ERR("%s bulk tx submit failed urb %p err %d", 160 bfusb->hdev->name, urb, err); 161 skb_unlink(skb, &bfusb->pending_q); 162 usb_free_urb(urb); 163 } else 164 atomic_inc(&bfusb->pending_tx); 165 166 return err; 167 } 168 169 static void bfusb_tx_wakeup(struct bfusb *bfusb) 170 { 171 struct sk_buff *skb; 172 173 BT_DBG("bfusb %p", bfusb); 174 175 if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) { 176 set_bit(BFUSB_TX_WAKEUP, &bfusb->state); 177 return; 178 } 179 180 do { 181 clear_bit(BFUSB_TX_WAKEUP, &bfusb->state); 182 183 while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) && 184 (skb = skb_dequeue(&bfusb->transmit_q))) { 185 if (bfusb_send_bulk(bfusb, skb) < 0) { 186 skb_queue_head(&bfusb->transmit_q, skb); 187 break; 188 } 189 } 190 191 } while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state)); 192 193 clear_bit(BFUSB_TX_PROCESS, &bfusb->state); 194 } 195 196 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs) 197 { 198 struct sk_buff *skb = (struct sk_buff *) urb->context; 199 struct bfusb *bfusb = (struct bfusb *) skb->dev; 200 201 BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len); 202 203 atomic_dec(&bfusb->pending_tx); 204 205 if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags)) 206 return; 207 208 if (!urb->status) 209 bfusb->hdev->stat.byte_tx += skb->len; 210 else 211 bfusb->hdev->stat.err_tx++; 212 213 read_lock(&bfusb->lock); 214 215 skb_unlink(skb, &bfusb->pending_q); 216 skb_queue_tail(&bfusb->completed_q, skb); 217 218 bfusb_tx_wakeup(bfusb); 219 220 read_unlock(&bfusb->lock); 221 } 222 223 224 static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb) 225 { 226 struct bfusb_scb *scb; 227 struct sk_buff *skb; 228 int err, pipe, size = HCI_MAX_FRAME_SIZE + 32; 229 230 BT_DBG("bfusb %p urb %p", bfusb, urb); 231 232 if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC))) 233 return -ENOMEM; 234 235 if (!(skb = bt_skb_alloc(size, GFP_ATOMIC))) { 236 usb_free_urb(urb); 237 return -ENOMEM; 238 } 239 240 skb->dev = (void *) bfusb; 241 242 scb = (struct bfusb_scb *) skb->cb; 243 scb->urb = urb; 244 245 pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep); 246 247 usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, size, 248 bfusb_rx_complete, skb); 249 250 skb_queue_tail(&bfusb->pending_q, skb); 251 252 err = usb_submit_urb(urb, GFP_ATOMIC); 253 if (err) { 254 BT_ERR("%s bulk rx submit failed urb %p err %d", 255 bfusb->hdev->name, urb, err); 256 skb_unlink(skb, &bfusb->pending_q); 257 kfree_skb(skb); 258 usb_free_urb(urb); 259 } 260 261 return err; 262 } 263 264 static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *data, int len) 265 { 266 BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len); 267 268 if (hdr & 0x10) { 269 BT_ERR("%s error in block", bfusb->hdev->name); 270 if (bfusb->reassembly) 271 kfree_skb(bfusb->reassembly); 272 bfusb->reassembly = NULL; 273 return -EIO; 274 } 275 276 if (hdr & 0x04) { 277 struct sk_buff *skb; 278 unsigned char pkt_type; 279 int pkt_len = 0; 280 281 if (bfusb->reassembly) { 282 BT_ERR("%s unexpected start block", bfusb->hdev->name); 283 kfree_skb(bfusb->reassembly); 284 bfusb->reassembly = NULL; 285 } 286 287 if (len < 1) { 288 BT_ERR("%s no packet type found", bfusb->hdev->name); 289 return -EPROTO; 290 } 291 292 pkt_type = *data++; len--; 293 294 switch (pkt_type) { 295 case HCI_EVENT_PKT: 296 if (len >= HCI_EVENT_HDR_SIZE) { 297 struct hci_event_hdr *hdr = (struct hci_event_hdr *) data; 298 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen; 299 } else { 300 BT_ERR("%s event block is too short", bfusb->hdev->name); 301 return -EILSEQ; 302 } 303 break; 304 305 case HCI_ACLDATA_PKT: 306 if (len >= HCI_ACL_HDR_SIZE) { 307 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) data; 308 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen); 309 } else { 310 BT_ERR("%s data block is too short", bfusb->hdev->name); 311 return -EILSEQ; 312 } 313 break; 314 315 case HCI_SCODATA_PKT: 316 if (len >= HCI_SCO_HDR_SIZE) { 317 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) data; 318 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen; 319 } else { 320 BT_ERR("%s audio block is too short", bfusb->hdev->name); 321 return -EILSEQ; 322 } 323 break; 324 } 325 326 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC); 327 if (!skb) { 328 BT_ERR("%s no memory for the packet", bfusb->hdev->name); 329 return -ENOMEM; 330 } 331 332 skb->dev = (void *) bfusb->hdev; 333 bt_cb(skb)->pkt_type = pkt_type; 334 335 bfusb->reassembly = skb; 336 } else { 337 if (!bfusb->reassembly) { 338 BT_ERR("%s unexpected continuation block", bfusb->hdev->name); 339 return -EIO; 340 } 341 } 342 343 if (len > 0) 344 memcpy(skb_put(bfusb->reassembly, len), data, len); 345 346 if (hdr & 0x08) { 347 hci_recv_frame(bfusb->reassembly); 348 bfusb->reassembly = NULL; 349 } 350 351 return 0; 352 } 353 354 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs) 355 { 356 struct sk_buff *skb = (struct sk_buff *) urb->context; 357 struct bfusb *bfusb = (struct bfusb *) skb->dev; 358 unsigned char *buf = urb->transfer_buffer; 359 int count = urb->actual_length; 360 int err, hdr, len; 361 362 BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len); 363 364 read_lock(&bfusb->lock); 365 366 if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags)) 367 goto unlock; 368 369 if (urb->status || !count) 370 goto resubmit; 371 372 bfusb->hdev->stat.byte_rx += count; 373 374 skb_put(skb, count); 375 376 while (count) { 377 hdr = buf[0] | (buf[1] << 8); 378 379 if (hdr & 0x4000) { 380 len = 0; 381 count -= 2; 382 buf += 2; 383 } else { 384 len = (buf[2] == 0) ? 256 : buf[2]; 385 count -= 3; 386 buf += 3; 387 } 388 389 if (count < len) { 390 BT_ERR("%s block extends over URB buffer ranges", 391 bfusb->hdev->name); 392 } 393 394 if ((hdr & 0xe1) == 0xc1) 395 bfusb_recv_block(bfusb, hdr, buf, len); 396 397 count -= len; 398 buf += len; 399 } 400 401 skb_unlink(skb, &bfusb->pending_q); 402 kfree_skb(skb); 403 404 bfusb_rx_submit(bfusb, urb); 405 406 read_unlock(&bfusb->lock); 407 408 return; 409 410 resubmit: 411 urb->dev = bfusb->udev; 412 413 err = usb_submit_urb(urb, GFP_ATOMIC); 414 if (err) { 415 BT_ERR("%s bulk resubmit failed urb %p err %d", 416 bfusb->hdev->name, urb, err); 417 } 418 419 unlock: 420 read_unlock(&bfusb->lock); 421 } 422 423 424 static int bfusb_open(struct hci_dev *hdev) 425 { 426 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; 427 unsigned long flags; 428 int i, err; 429 430 BT_DBG("hdev %p bfusb %p", hdev, bfusb); 431 432 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 433 return 0; 434 435 write_lock_irqsave(&bfusb->lock, flags); 436 437 err = bfusb_rx_submit(bfusb, NULL); 438 if (!err) { 439 for (i = 1; i < BFUSB_MAX_BULK_RX; i++) 440 bfusb_rx_submit(bfusb, NULL); 441 } else { 442 clear_bit(HCI_RUNNING, &hdev->flags); 443 } 444 445 write_unlock_irqrestore(&bfusb->lock, flags); 446 447 return err; 448 } 449 450 static int bfusb_flush(struct hci_dev *hdev) 451 { 452 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; 453 454 BT_DBG("hdev %p bfusb %p", hdev, bfusb); 455 456 skb_queue_purge(&bfusb->transmit_q); 457 458 return 0; 459 } 460 461 static int bfusb_close(struct hci_dev *hdev) 462 { 463 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; 464 unsigned long flags; 465 466 BT_DBG("hdev %p bfusb %p", hdev, bfusb); 467 468 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 469 return 0; 470 471 write_lock_irqsave(&bfusb->lock, flags); 472 write_unlock_irqrestore(&bfusb->lock, flags); 473 474 bfusb_unlink_urbs(bfusb); 475 bfusb_flush(hdev); 476 477 return 0; 478 } 479 480 static int bfusb_send_frame(struct sk_buff *skb) 481 { 482 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 483 struct bfusb *bfusb; 484 struct sk_buff *nskb; 485 unsigned char buf[3]; 486 int sent = 0, size, count; 487 488 BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len); 489 490 if (!hdev) { 491 BT_ERR("Frame for unknown HCI device (hdev=NULL)"); 492 return -ENODEV; 493 } 494 495 if (!test_bit(HCI_RUNNING, &hdev->flags)) 496 return -EBUSY; 497 498 bfusb = (struct bfusb *) hdev->driver_data; 499 500 switch (bt_cb(skb)->pkt_type) { 501 case HCI_COMMAND_PKT: 502 hdev->stat.cmd_tx++; 503 break; 504 case HCI_ACLDATA_PKT: 505 hdev->stat.acl_tx++; 506 break; 507 case HCI_SCODATA_PKT: 508 hdev->stat.sco_tx++; 509 break; 510 }; 511 512 /* Prepend skb with frame type */ 513 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); 514 515 count = skb->len; 516 517 /* Max HCI frame size seems to be 1511 + 1 */ 518 if (!(nskb = bt_skb_alloc(count + 32, GFP_ATOMIC))) { 519 BT_ERR("Can't allocate memory for new packet"); 520 return -ENOMEM; 521 } 522 523 nskb->dev = (void *) bfusb; 524 525 while (count) { 526 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE); 527 528 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0); 529 buf[1] = 0x00; 530 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size; 531 532 memcpy(skb_put(nskb, 3), buf, 3); 533 memcpy(skb_put(nskb, size), skb->data + sent, size); 534 535 sent += size; 536 count -= size; 537 } 538 539 /* Don't send frame with multiple size of bulk max packet */ 540 if ((nskb->len % bfusb->bulk_pkt_size) == 0) { 541 buf[0] = 0xdd; 542 buf[1] = 0x00; 543 memcpy(skb_put(nskb, 2), buf, 2); 544 } 545 546 read_lock(&bfusb->lock); 547 548 skb_queue_tail(&bfusb->transmit_q, nskb); 549 bfusb_tx_wakeup(bfusb); 550 551 read_unlock(&bfusb->lock); 552 553 kfree_skb(skb); 554 555 return 0; 556 } 557 558 static void bfusb_destruct(struct hci_dev *hdev) 559 { 560 struct bfusb *bfusb = (struct bfusb *) hdev->driver_data; 561 562 BT_DBG("hdev %p bfusb %p", hdev, bfusb); 563 564 kfree(bfusb); 565 } 566 567 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) 568 { 569 return -ENOIOCTLCMD; 570 } 571 572 573 static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int count) 574 { 575 unsigned char *buf; 576 int err, pipe, len, size, sent = 0; 577 578 BT_DBG("bfusb %p udev %p", bfusb, bfusb->udev); 579 580 BT_INFO("BlueFRITZ! USB loading firmware"); 581 582 pipe = usb_sndctrlpipe(bfusb->udev, 0); 583 584 if (usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION, 585 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) { 586 BT_ERR("Can't change to loading configuration"); 587 return -EBUSY; 588 } 589 590 bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0; 591 592 buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC); 593 if (!buf) { 594 BT_ERR("Can't allocate memory chunk for firmware"); 595 return -ENOMEM; 596 } 597 598 pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep); 599 600 while (count) { 601 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3); 602 603 memcpy(buf, firmware + sent, size); 604 605 err = usb_bulk_msg(bfusb->udev, pipe, buf, size, 606 &len, BFUSB_BLOCK_TIMEOUT); 607 608 if (err || (len != size)) { 609 BT_ERR("Error in firmware loading"); 610 goto error; 611 } 612 613 sent += size; 614 count -= size; 615 } 616 617 if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0, 618 &len, BFUSB_BLOCK_TIMEOUT)) < 0) { 619 BT_ERR("Error in null packet request"); 620 goto error; 621 } 622 623 pipe = usb_sndctrlpipe(bfusb->udev, 0); 624 625 if ((err = usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION, 626 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT)) < 0) { 627 BT_ERR("Can't change to running configuration"); 628 goto error; 629 } 630 631 bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0; 632 633 BT_INFO("BlueFRITZ! USB device ready"); 634 635 kfree(buf); 636 return 0; 637 638 error: 639 kfree(buf); 640 641 pipe = usb_sndctrlpipe(bfusb->udev, 0); 642 643 usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION, 644 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); 645 646 return err; 647 } 648 649 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id) 650 { 651 const struct firmware *firmware; 652 struct usb_device *udev = interface_to_usbdev(intf); 653 struct usb_host_endpoint *bulk_out_ep; 654 struct usb_host_endpoint *bulk_in_ep; 655 struct hci_dev *hdev; 656 struct bfusb *bfusb; 657 658 BT_DBG("intf %p id %p", intf, id); 659 660 if (ignore) 661 return -ENODEV; 662 663 /* Check number of endpoints */ 664 if (intf->cur_altsetting->desc.bNumEndpoints < 2) 665 return -EIO; 666 667 bulk_out_ep = &intf->cur_altsetting->endpoint[0]; 668 bulk_in_ep = &intf->cur_altsetting->endpoint[1]; 669 670 if (!bulk_out_ep || !bulk_in_ep) { 671 BT_ERR("Bulk endpoints not found"); 672 goto done; 673 } 674 675 /* Initialize control structure and load firmware */ 676 if (!(bfusb = kzalloc(sizeof(struct bfusb), GFP_KERNEL))) { 677 BT_ERR("Can't allocate memory for control structure"); 678 goto done; 679 } 680 681 bfusb->udev = udev; 682 bfusb->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress; 683 bfusb->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; 684 bfusb->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize); 685 686 rwlock_init(&bfusb->lock); 687 688 bfusb->reassembly = NULL; 689 690 skb_queue_head_init(&bfusb->transmit_q); 691 skb_queue_head_init(&bfusb->pending_q); 692 skb_queue_head_init(&bfusb->completed_q); 693 694 if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) { 695 BT_ERR("Firmware request failed"); 696 goto error; 697 } 698 699 BT_DBG("firmware data %p size %d", firmware->data, firmware->size); 700 701 if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) { 702 BT_ERR("Firmware loading failed"); 703 goto release; 704 } 705 706 release_firmware(firmware); 707 708 /* Initialize and register HCI device */ 709 hdev = hci_alloc_dev(); 710 if (!hdev) { 711 BT_ERR("Can't allocate HCI device"); 712 goto error; 713 } 714 715 bfusb->hdev = hdev; 716 717 hdev->type = HCI_USB; 718 hdev->driver_data = bfusb; 719 SET_HCIDEV_DEV(hdev, &intf->dev); 720 721 hdev->open = bfusb_open; 722 hdev->close = bfusb_close; 723 hdev->flush = bfusb_flush; 724 hdev->send = bfusb_send_frame; 725 hdev->destruct = bfusb_destruct; 726 hdev->ioctl = bfusb_ioctl; 727 728 hdev->owner = THIS_MODULE; 729 730 if (hci_register_dev(hdev) < 0) { 731 BT_ERR("Can't register HCI device"); 732 hci_free_dev(hdev); 733 goto error; 734 } 735 736 usb_set_intfdata(intf, bfusb); 737 738 return 0; 739 740 release: 741 release_firmware(firmware); 742 743 error: 744 kfree(bfusb); 745 746 done: 747 return -EIO; 748 } 749 750 static void bfusb_disconnect(struct usb_interface *intf) 751 { 752 struct bfusb *bfusb = usb_get_intfdata(intf); 753 struct hci_dev *hdev = bfusb->hdev; 754 755 BT_DBG("intf %p", intf); 756 757 if (!hdev) 758 return; 759 760 usb_set_intfdata(intf, NULL); 761 762 bfusb_close(hdev); 763 764 if (hci_unregister_dev(hdev) < 0) 765 BT_ERR("Can't unregister HCI device %s", hdev->name); 766 767 hci_free_dev(hdev); 768 } 769 770 static struct usb_driver bfusb_driver = { 771 .name = "bfusb", 772 .probe = bfusb_probe, 773 .disconnect = bfusb_disconnect, 774 .id_table = bfusb_table, 775 }; 776 777 static int __init bfusb_init(void) 778 { 779 int err; 780 781 BT_INFO("BlueFRITZ! USB driver ver %s", VERSION); 782 783 if ((err = usb_register(&bfusb_driver)) < 0) 784 BT_ERR("Failed to register BlueFRITZ! USB driver"); 785 786 return err; 787 } 788 789 static void __exit bfusb_exit(void) 790 { 791 usb_deregister(&bfusb_driver); 792 } 793 794 module_init(bfusb_init); 795 module_exit(bfusb_exit); 796 797 module_param(ignore, bool, 0644); 798 MODULE_PARM_DESC(ignore, "Ignore devices from the matching table"); 799 800 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 801 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION); 802 MODULE_VERSION(VERSION); 803 MODULE_LICENSE("GPL"); 804