1 /** 2 * Marvell Bluetooth driver 3 * 4 * Copyright (C) 2009, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * 15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 17 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 18 * this warranty disclaimer. 19 **/ 20 21 #include <linux/module.h> 22 23 #include <net/bluetooth/bluetooth.h> 24 #include <net/bluetooth/hci_core.h> 25 26 #include "btmrvl_drv.h" 27 28 #define VERSION "1.0" 29 30 /* 31 * This function is called by interface specific interrupt handler. 32 * It updates Power Save & Host Sleep states, and wakes up the main 33 * thread. 34 */ 35 void btmrvl_interrupt(struct btmrvl_private *priv) 36 { 37 priv->adapter->ps_state = PS_AWAKE; 38 39 priv->adapter->wakeup_tries = 0; 40 41 priv->adapter->int_count++; 42 43 wake_up_interruptible(&priv->main_thread.wait_q); 44 } 45 EXPORT_SYMBOL_GPL(btmrvl_interrupt); 46 47 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb) 48 { 49 struct hci_event_hdr *hdr = (void *) skb->data; 50 51 if (hdr->evt == HCI_EV_CMD_COMPLETE) { 52 struct hci_ev_cmd_complete *ec; 53 u16 opcode, ocf, ogf; 54 55 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE); 56 opcode = __le16_to_cpu(ec->opcode); 57 ocf = hci_opcode_ocf(opcode); 58 ogf = hci_opcode_ogf(opcode); 59 60 if (priv->btmrvl_dev.sendcmdflag) { 61 priv->btmrvl_dev.sendcmdflag = false; 62 priv->adapter->cmd_complete = true; 63 wake_up_interruptible(&priv->adapter->cmd_wait_q); 64 } 65 66 if (ogf == OGF) { 67 BT_DBG("vendor event skipped: ogf 0x%4.4x ocf 0x%4.4x", 68 ogf, ocf); 69 kfree_skb(skb); 70 return false; 71 } 72 } 73 74 return true; 75 } 76 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt); 77 78 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb) 79 { 80 struct btmrvl_adapter *adapter = priv->adapter; 81 struct btmrvl_event *event; 82 int ret = 0; 83 84 event = (struct btmrvl_event *) skb->data; 85 if (event->ec != 0xff) { 86 BT_DBG("Not Marvell Event=%x", event->ec); 87 ret = -EINVAL; 88 goto exit; 89 } 90 91 switch (event->data[0]) { 92 case BT_CMD_AUTO_SLEEP_MODE: 93 if (!event->data[2]) { 94 if (event->data[1] == BT_PS_ENABLE) 95 adapter->psmode = 1; 96 else 97 adapter->psmode = 0; 98 BT_DBG("PS Mode:%s", 99 (adapter->psmode) ? "Enable" : "Disable"); 100 } else { 101 BT_DBG("PS Mode command failed"); 102 } 103 break; 104 105 case BT_CMD_HOST_SLEEP_CONFIG: 106 if (!event->data[3]) 107 BT_DBG("gpio=%x, gap=%x", event->data[1], 108 event->data[2]); 109 else 110 BT_DBG("HSCFG command failed"); 111 break; 112 113 case BT_CMD_HOST_SLEEP_ENABLE: 114 if (!event->data[1]) { 115 adapter->hs_state = HS_ACTIVATED; 116 if (adapter->psmode) 117 adapter->ps_state = PS_SLEEP; 118 BT_DBG("HS ACTIVATED!"); 119 } else { 120 BT_DBG("HS Enable failed"); 121 } 122 break; 123 124 case BT_CMD_MODULE_CFG_REQ: 125 if (priv->btmrvl_dev.sendcmdflag && 126 event->data[1] == MODULE_BRINGUP_REQ) { 127 BT_DBG("EVENT:%s", 128 ((event->data[2] == MODULE_BROUGHT_UP) || 129 (event->data[2] == MODULE_ALREADY_UP)) ? 130 "Bring-up succeed" : "Bring-up failed"); 131 132 if (event->length > 3 && event->data[3]) 133 priv->btmrvl_dev.dev_type = HCI_AMP; 134 else 135 priv->btmrvl_dev.dev_type = HCI_BREDR; 136 137 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type); 138 } else if (priv->btmrvl_dev.sendcmdflag && 139 event->data[1] == MODULE_SHUTDOWN_REQ) { 140 BT_DBG("EVENT:%s", (event->data[2]) ? 141 "Shutdown failed" : "Shutdown succeed"); 142 } else { 143 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP"); 144 ret = -EINVAL; 145 } 146 break; 147 148 case BT_EVENT_POWER_STATE: 149 if (event->data[1] == BT_PS_SLEEP) 150 adapter->ps_state = PS_SLEEP; 151 BT_DBG("EVENT:%s", 152 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE"); 153 break; 154 155 default: 156 BT_DBG("Unknown Event=%d", event->data[0]); 157 ret = -EINVAL; 158 break; 159 } 160 161 exit: 162 if (!ret) 163 kfree_skb(skb); 164 165 return ret; 166 } 167 EXPORT_SYMBOL_GPL(btmrvl_process_event); 168 169 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 cmd_no, 170 const void *param, u8 len) 171 { 172 struct sk_buff *skb; 173 struct hci_command_hdr *hdr; 174 175 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC); 176 if (skb == NULL) { 177 BT_ERR("No free skb"); 178 return -ENOMEM; 179 } 180 181 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE); 182 hdr->opcode = cpu_to_le16(hci_opcode_pack(OGF, cmd_no)); 183 hdr->plen = len; 184 185 if (len) 186 memcpy(skb_put(skb, len), param, len); 187 188 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; 189 190 skb_queue_head(&priv->adapter->tx_queue, skb); 191 192 priv->btmrvl_dev.sendcmdflag = true; 193 194 priv->adapter->cmd_complete = false; 195 196 wake_up_interruptible(&priv->main_thread.wait_q); 197 198 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q, 199 priv->adapter->cmd_complete, 200 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) 201 return -ETIMEDOUT; 202 203 return 0; 204 } 205 206 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd) 207 { 208 int ret; 209 210 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1); 211 if (ret) 212 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd); 213 214 return ret; 215 } 216 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd); 217 218 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv) 219 { 220 int ret; 221 u8 param[2]; 222 223 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8; 224 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff); 225 226 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x", 227 param[0], param[1]); 228 229 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2); 230 if (ret) 231 BT_ERR("HSCFG command failed\n"); 232 233 return ret; 234 } 235 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd); 236 237 int btmrvl_enable_ps(struct btmrvl_private *priv) 238 { 239 int ret; 240 u8 param; 241 242 if (priv->btmrvl_dev.psmode) 243 param = BT_PS_ENABLE; 244 else 245 param = BT_PS_DISABLE; 246 247 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1); 248 if (ret) 249 BT_ERR("PSMODE command failed\n"); 250 251 return 0; 252 } 253 EXPORT_SYMBOL_GPL(btmrvl_enable_ps); 254 255 int btmrvl_enable_hs(struct btmrvl_private *priv) 256 { 257 int ret; 258 259 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0); 260 if (ret) 261 BT_ERR("Host sleep enable command failed\n"); 262 263 return ret; 264 } 265 EXPORT_SYMBOL_GPL(btmrvl_enable_hs); 266 267 int btmrvl_prepare_command(struct btmrvl_private *priv) 268 { 269 int ret = 0; 270 271 if (priv->btmrvl_dev.hscfgcmd) { 272 priv->btmrvl_dev.hscfgcmd = 0; 273 btmrvl_send_hscfg_cmd(priv); 274 } 275 276 if (priv->btmrvl_dev.pscmd) { 277 priv->btmrvl_dev.pscmd = 0; 278 btmrvl_enable_ps(priv); 279 } 280 281 if (priv->btmrvl_dev.hscmd) { 282 priv->btmrvl_dev.hscmd = 0; 283 284 if (priv->btmrvl_dev.hsmode) { 285 ret = btmrvl_enable_hs(priv); 286 } else { 287 ret = priv->hw_wakeup_firmware(priv); 288 priv->adapter->hs_state = HS_DEACTIVATED; 289 } 290 } 291 292 return ret; 293 } 294 295 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) 296 { 297 int ret = 0; 298 299 if (!skb || !skb->data) 300 return -EINVAL; 301 302 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) { 303 BT_ERR("Tx Error: Bad skb length %d : %d", 304 skb->len, BTM_UPLD_SIZE); 305 return -EINVAL; 306 } 307 308 if (skb_headroom(skb) < BTM_HEADER_LEN) { 309 struct sk_buff *tmp = skb; 310 311 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN); 312 if (!skb) { 313 BT_ERR("Tx Error: realloc_headroom failed %d", 314 BTM_HEADER_LEN); 315 skb = tmp; 316 return -EINVAL; 317 } 318 319 kfree_skb(tmp); 320 } 321 322 skb_push(skb, BTM_HEADER_LEN); 323 324 /* header type: byte[3] 325 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor 326 * header length: byte[2][1][0] 327 */ 328 329 skb->data[0] = (skb->len & 0x0000ff); 330 skb->data[1] = (skb->len & 0x00ff00) >> 8; 331 skb->data[2] = (skb->len & 0xff0000) >> 16; 332 skb->data[3] = bt_cb(skb)->pkt_type; 333 334 if (priv->hw_host_to_card) 335 ret = priv->hw_host_to_card(priv, skb->data, skb->len); 336 337 return ret; 338 } 339 340 static void btmrvl_init_adapter(struct btmrvl_private *priv) 341 { 342 skb_queue_head_init(&priv->adapter->tx_queue); 343 344 priv->adapter->ps_state = PS_AWAKE; 345 346 init_waitqueue_head(&priv->adapter->cmd_wait_q); 347 } 348 349 static void btmrvl_free_adapter(struct btmrvl_private *priv) 350 { 351 skb_queue_purge(&priv->adapter->tx_queue); 352 353 kfree(priv->adapter); 354 355 priv->adapter = NULL; 356 } 357 358 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 359 { 360 struct btmrvl_private *priv = hci_get_drvdata(hdev); 361 362 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len); 363 364 if (!test_bit(HCI_RUNNING, &hdev->flags)) { 365 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags); 366 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET, 367 skb->data, skb->len); 368 return -EBUSY; 369 } 370 371 switch (bt_cb(skb)->pkt_type) { 372 case HCI_COMMAND_PKT: 373 hdev->stat.cmd_tx++; 374 break; 375 376 case HCI_ACLDATA_PKT: 377 hdev->stat.acl_tx++; 378 break; 379 380 case HCI_SCODATA_PKT: 381 hdev->stat.sco_tx++; 382 break; 383 } 384 385 skb_queue_tail(&priv->adapter->tx_queue, skb); 386 387 wake_up_interruptible(&priv->main_thread.wait_q); 388 389 return 0; 390 } 391 392 static int btmrvl_flush(struct hci_dev *hdev) 393 { 394 struct btmrvl_private *priv = hci_get_drvdata(hdev); 395 396 skb_queue_purge(&priv->adapter->tx_queue); 397 398 return 0; 399 } 400 401 static int btmrvl_close(struct hci_dev *hdev) 402 { 403 struct btmrvl_private *priv = hci_get_drvdata(hdev); 404 405 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 406 return 0; 407 408 skb_queue_purge(&priv->adapter->tx_queue); 409 410 return 0; 411 } 412 413 static int btmrvl_open(struct hci_dev *hdev) 414 { 415 set_bit(HCI_RUNNING, &hdev->flags); 416 417 return 0; 418 } 419 420 /* 421 * This function parses provided calibration data input. It should contain 422 * hex bytes separated by space or new line character. Here is an example. 423 * 00 1C 01 37 FF FF FF FF 02 04 7F 01 424 * CE BA 00 00 00 2D C6 C0 00 00 00 00 425 * 00 F0 00 00 426 */ 427 static int btmrvl_parse_cal_cfg(const u8 *src, u32 len, u8 *dst, u32 dst_size) 428 { 429 const u8 *s = src; 430 u8 *d = dst; 431 int ret; 432 u8 tmp[3]; 433 434 tmp[2] = '\0'; 435 while ((s - src) <= len - 2) { 436 if (isspace(*s)) { 437 s++; 438 continue; 439 } 440 441 if (isxdigit(*s)) { 442 if ((d - dst) >= dst_size) { 443 BT_ERR("calibration data file too big!!!"); 444 return -EINVAL; 445 } 446 447 memcpy(tmp, s, 2); 448 449 ret = kstrtou8(tmp, 16, d++); 450 if (ret < 0) 451 return ret; 452 453 s += 2; 454 } else { 455 return -EINVAL; 456 } 457 } 458 if (d == dst) 459 return -EINVAL; 460 461 return 0; 462 } 463 464 static int btmrvl_load_cal_data(struct btmrvl_private *priv, 465 u8 *config_data) 466 { 467 int i, ret; 468 u8 data[BT_CMD_DATA_SIZE]; 469 470 data[0] = 0x00; 471 data[1] = 0x00; 472 data[2] = 0x00; 473 data[3] = BT_CMD_DATA_SIZE - 4; 474 475 /* Swap cal-data bytes. Each four bytes are swapped. Considering 4 476 * byte SDIO header offset, mapping of input and output bytes will be 477 * {3, 2, 1, 0} -> {0+4, 1+4, 2+4, 3+4}, 478 * {7, 6, 5, 4} -> {4+4, 5+4, 6+4, 7+4} */ 479 for (i = 4; i < BT_CMD_DATA_SIZE; i++) 480 data[i] = config_data[(i / 4) * 8 - 1 - i]; 481 482 print_hex_dump_bytes("Calibration data: ", 483 DUMP_PREFIX_OFFSET, data, BT_CMD_DATA_SIZE); 484 485 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data, 486 BT_CMD_DATA_SIZE); 487 if (ret) 488 BT_ERR("Failed to download caibration data\n"); 489 490 return 0; 491 } 492 493 static int 494 btmrvl_process_cal_cfg(struct btmrvl_private *priv, u8 *data, u32 size) 495 { 496 u8 cal_data[BT_CAL_DATA_SIZE]; 497 int ret; 498 499 ret = btmrvl_parse_cal_cfg(data, size, cal_data, sizeof(cal_data)); 500 if (ret) 501 return ret; 502 503 ret = btmrvl_load_cal_data(priv, cal_data); 504 if (ret) { 505 BT_ERR("Fail to load calibrate data"); 506 return ret; 507 } 508 509 return 0; 510 } 511 512 static int btmrvl_cal_data_config(struct btmrvl_private *priv) 513 { 514 const struct firmware *cfg; 515 int ret; 516 const char *cal_data = priv->btmrvl_dev.cal_data; 517 518 if (!cal_data) 519 return 0; 520 521 ret = request_firmware(&cfg, cal_data, priv->btmrvl_dev.dev); 522 if (ret < 0) { 523 BT_DBG("Failed to get %s file, skipping cal data download", 524 cal_data); 525 return 0; 526 } 527 528 ret = btmrvl_process_cal_cfg(priv, (u8 *)cfg->data, cfg->size); 529 release_firmware(cfg); 530 return ret; 531 } 532 533 static int btmrvl_setup(struct hci_dev *hdev) 534 { 535 struct btmrvl_private *priv = hci_get_drvdata(hdev); 536 537 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ); 538 539 if (btmrvl_cal_data_config(priv)) 540 BT_ERR("Set cal data failed"); 541 542 priv->btmrvl_dev.psmode = 1; 543 btmrvl_enable_ps(priv); 544 545 priv->btmrvl_dev.gpio_gap = 0xffff; 546 btmrvl_send_hscfg_cmd(priv); 547 548 return 0; 549 } 550 551 /* 552 * This function handles the event generated by firmware, rx data 553 * received from firmware, and tx data sent from kernel. 554 */ 555 static int btmrvl_service_main_thread(void *data) 556 { 557 struct btmrvl_thread *thread = data; 558 struct btmrvl_private *priv = thread->priv; 559 struct btmrvl_adapter *adapter = priv->adapter; 560 wait_queue_t wait; 561 struct sk_buff *skb; 562 ulong flags; 563 564 init_waitqueue_entry(&wait, current); 565 566 for (;;) { 567 add_wait_queue(&thread->wait_q, &wait); 568 569 set_current_state(TASK_INTERRUPTIBLE); 570 if (kthread_should_stop()) { 571 BT_DBG("main_thread: break from main thread"); 572 break; 573 } 574 575 if (adapter->wakeup_tries || 576 ((!adapter->int_count) && 577 (!priv->btmrvl_dev.tx_dnld_rdy || 578 skb_queue_empty(&adapter->tx_queue)))) { 579 BT_DBG("main_thread is sleeping..."); 580 schedule(); 581 } 582 583 set_current_state(TASK_RUNNING); 584 585 remove_wait_queue(&thread->wait_q, &wait); 586 587 BT_DBG("main_thread woke up"); 588 589 spin_lock_irqsave(&priv->driver_lock, flags); 590 if (adapter->int_count) { 591 adapter->int_count = 0; 592 spin_unlock_irqrestore(&priv->driver_lock, flags); 593 priv->hw_process_int_status(priv); 594 } else if (adapter->ps_state == PS_SLEEP && 595 !skb_queue_empty(&adapter->tx_queue)) { 596 spin_unlock_irqrestore(&priv->driver_lock, flags); 597 adapter->wakeup_tries++; 598 priv->hw_wakeup_firmware(priv); 599 continue; 600 } else { 601 spin_unlock_irqrestore(&priv->driver_lock, flags); 602 } 603 604 if (adapter->ps_state == PS_SLEEP) 605 continue; 606 607 if (!priv->btmrvl_dev.tx_dnld_rdy) 608 continue; 609 610 skb = skb_dequeue(&adapter->tx_queue); 611 if (skb) { 612 if (btmrvl_tx_pkt(priv, skb)) 613 priv->btmrvl_dev.hcidev->stat.err_tx++; 614 else 615 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len; 616 617 kfree_skb(skb); 618 } 619 } 620 621 return 0; 622 } 623 624 int btmrvl_register_hdev(struct btmrvl_private *priv) 625 { 626 struct hci_dev *hdev = NULL; 627 int ret; 628 629 hdev = hci_alloc_dev(); 630 if (!hdev) { 631 BT_ERR("Can not allocate HCI device"); 632 goto err_hdev; 633 } 634 635 priv->btmrvl_dev.hcidev = hdev; 636 hci_set_drvdata(hdev, priv); 637 638 hdev->bus = HCI_SDIO; 639 hdev->open = btmrvl_open; 640 hdev->close = btmrvl_close; 641 hdev->flush = btmrvl_flush; 642 hdev->send = btmrvl_send_frame; 643 hdev->setup = btmrvl_setup; 644 645 hdev->dev_type = priv->btmrvl_dev.dev_type; 646 647 ret = hci_register_dev(hdev); 648 if (ret < 0) { 649 BT_ERR("Can not register HCI device"); 650 goto err_hci_register_dev; 651 } 652 653 #ifdef CONFIG_DEBUG_FS 654 btmrvl_debugfs_init(hdev); 655 #endif 656 657 return 0; 658 659 err_hci_register_dev: 660 hci_free_dev(hdev); 661 662 err_hdev: 663 /* Stop the thread servicing the interrupts */ 664 kthread_stop(priv->main_thread.task); 665 666 btmrvl_free_adapter(priv); 667 kfree(priv); 668 669 return -ENOMEM; 670 } 671 EXPORT_SYMBOL_GPL(btmrvl_register_hdev); 672 673 struct btmrvl_private *btmrvl_add_card(void *card) 674 { 675 struct btmrvl_private *priv; 676 677 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 678 if (!priv) { 679 BT_ERR("Can not allocate priv"); 680 goto err_priv; 681 } 682 683 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL); 684 if (!priv->adapter) { 685 BT_ERR("Allocate buffer for btmrvl_adapter failed!"); 686 goto err_adapter; 687 } 688 689 btmrvl_init_adapter(priv); 690 691 BT_DBG("Starting kthread..."); 692 priv->main_thread.priv = priv; 693 spin_lock_init(&priv->driver_lock); 694 695 init_waitqueue_head(&priv->main_thread.wait_q); 696 priv->main_thread.task = kthread_run(btmrvl_service_main_thread, 697 &priv->main_thread, "btmrvl_main_service"); 698 699 priv->btmrvl_dev.card = card; 700 priv->btmrvl_dev.tx_dnld_rdy = true; 701 702 return priv; 703 704 err_adapter: 705 kfree(priv); 706 707 err_priv: 708 return NULL; 709 } 710 EXPORT_SYMBOL_GPL(btmrvl_add_card); 711 712 int btmrvl_remove_card(struct btmrvl_private *priv) 713 { 714 struct hci_dev *hdev; 715 716 hdev = priv->btmrvl_dev.hcidev; 717 718 wake_up_interruptible(&priv->adapter->cmd_wait_q); 719 720 kthread_stop(priv->main_thread.task); 721 722 #ifdef CONFIG_DEBUG_FS 723 btmrvl_debugfs_remove(hdev); 724 #endif 725 726 hci_unregister_dev(hdev); 727 728 hci_free_dev(hdev); 729 730 priv->btmrvl_dev.hcidev = NULL; 731 732 btmrvl_free_adapter(priv); 733 734 kfree(priv); 735 736 return 0; 737 } 738 EXPORT_SYMBOL_GPL(btmrvl_remove_card); 739 740 MODULE_AUTHOR("Marvell International Ltd."); 741 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION); 742 MODULE_VERSION(VERSION); 743 MODULE_LICENSE("GPL v2"); 744