drivers/bluetooth/btmrvl_main.c

   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 #include <linux/of.h>
  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;
  54
  55                 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  56                 opcode = __le16_to_cpu(ec->opcode);
  57
  58                 if (priv->btmrvl_dev.sendcmdflag) {
  59                         priv->btmrvl_dev.sendcmdflag = false;
  60                         priv->adapter->cmd_complete = true;
  61                         wake_up_interruptible(&priv->adapter->cmd_wait_q);
  62
  63                         if (hci_opcode_ogf(opcode) == 0x3F) {
  64                                 BT_DBG("vendor event skipped: opcode=%#4.4x",
  65                                        opcode);
  66                                 kfree_skb(skb);
  67                                 return false;
  68                         }
  69                 }
  70         }
  71
  72         return true;
  73 }
  74 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  75
  76 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  77 {
  78         struct btmrvl_adapter *adapter = priv->adapter;
  79         struct btmrvl_event *event;
  80         int ret = 0;
  81
  82         event = (struct btmrvl_event *) skb->data;
  83         if (event->ec != 0xff) {
  84                 BT_DBG("Not Marvell Event=%x", event->ec);
  85                 ret = -EINVAL;
  86                 goto exit;
  87         }
  88
  89         switch (event->data[0]) {
  90         case BT_EVENT_AUTO_SLEEP_MODE:
  91                 if (!event->data[2]) {
  92                         if (event->data[1] == BT_PS_ENABLE)
  93                                 adapter->psmode = 1;
  94                         else
  95                                 adapter->psmode = 0;
  96                         BT_DBG("PS Mode:%s",
  97                                 (adapter->psmode) ? "Enable" : "Disable");
  98                 } else {
  99                         BT_DBG("PS Mode command failed");
 100                 }
 101                 break;
 102
 103         case BT_EVENT_HOST_SLEEP_CONFIG:
 104                 if (!event->data[3])
 105                         BT_DBG("gpio=%x, gap=%x", event->data[1],
 106                                                         event->data[2]);
 107                 else
 108                         BT_DBG("HSCFG command failed");
 109                 break;
 110
 111         case BT_EVENT_HOST_SLEEP_ENABLE:
 112                 if (!event->data[1]) {
 113                         adapter->hs_state = HS_ACTIVATED;
 114                         if (adapter->psmode)
 115                                 adapter->ps_state = PS_SLEEP;
 116                         BT_DBG("HS ACTIVATED!");
 117                 } else {
 118                         BT_DBG("HS Enable failed");
 119                 }
 120                 break;
 121
 122         case BT_EVENT_MODULE_CFG_REQ:
 123                 if (priv->btmrvl_dev.sendcmdflag &&
 124                                 event->data[1] == MODULE_BRINGUP_REQ) {
 125                         BT_DBG("EVENT:%s",
 126                                 ((event->data[2] == MODULE_BROUGHT_UP) ||
 127                                 (event->data[2] == MODULE_ALREADY_UP)) ?
 128                                 "Bring-up succeed" : "Bring-up failed");
 129
 130                         if (event->length > 3 && event->data[3])
 131                                 priv->btmrvl_dev.dev_type = HCI_AMP;
 132                         else
 133                                 priv->btmrvl_dev.dev_type = HCI_BREDR;
 134
 135                         BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 136                 } else if (priv->btmrvl_dev.sendcmdflag &&
 137                                 event->data[1] == MODULE_SHUTDOWN_REQ) {
 138                         BT_DBG("EVENT:%s", (event->data[2]) ?
 139                                 "Shutdown failed" : "Shutdown succeed");
 140                 } else {
 141                         BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 142                         ret = -EINVAL;
 143                 }
 144                 break;
 145
 146         case BT_EVENT_POWER_STATE:
 147                 if (event->data[1] == BT_PS_SLEEP)
 148                         adapter->ps_state = PS_SLEEP;
 149                 BT_DBG("EVENT:%s",
 150                         (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 151                 break;
 152
 153         default:
 154                 BT_DBG("Unknown Event=%d", event->data[0]);
 155                 ret = -EINVAL;
 156                 break;
 157         }
 158
 159 exit:
 160         if (!ret)
 161                 kfree_skb(skb);
 162
 163         return ret;
 164 }
 165 EXPORT_SYMBOL_GPL(btmrvl_process_event);
 166
 167 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
 168                                 const void *param, u8 len)
 169 {
 170         struct sk_buff *skb;
 171         struct hci_command_hdr *hdr;
 172
 173         skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
 174         if (skb == NULL) {
 175                 BT_ERR("No free skb");
 176                 return -ENOMEM;
 177         }
 178
 179         hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
 180         hdr->opcode = cpu_to_le16(opcode);
 181         hdr->plen = len;
 182
 183         if (len)
 184                 memcpy(skb_put(skb, len), param, len);
 185
 186         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 187
 188         skb_queue_head(&priv->adapter->tx_queue, skb);
 189
 190         priv->btmrvl_dev.sendcmdflag = true;
 191
 192         priv->adapter->cmd_complete = false;
 193
 194         wake_up_interruptible(&priv->main_thread.wait_q);
 195
 196         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 197                                 priv->adapter->cmd_complete,
 198                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
 199                 return -ETIMEDOUT;
 200
 201         return 0;
 202 }
 203
 204 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
 205 {
 206         int ret;
 207
 208         ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
 209         if (ret)
 210                 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
 211
 212         return ret;
 213 }
 214 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 215
 216 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 217 {
 218         int ret;
 219         u8 param[2];
 220
 221         param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 222         param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 223
 224         BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
 225                param[0], param[1]);
 226
 227         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
 228         if (ret)
 229                 BT_ERR("HSCFG command failed\n");
 230
 231         return ret;
 232 }
 233 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 234
 235 int btmrvl_enable_ps(struct btmrvl_private *priv)
 236 {
 237         int ret;
 238         u8 param;
 239
 240         if (priv->btmrvl_dev.psmode)
 241                 param = BT_PS_ENABLE;
 242         else
 243                 param = BT_PS_DISABLE;
 244
 245         ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
 246         if (ret)
 247                 BT_ERR("PSMODE command failed\n");
 248
 249         return 0;
 250 }
 251 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 252
 253 int btmrvl_enable_hs(struct btmrvl_private *priv)
 254 {
 255         int ret;
 256
 257         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
 258         if (ret)
 259                 BT_ERR("Host sleep enable command failed\n");
 260
 261         return ret;
 262 }
 263 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 264
 265 int btmrvl_prepare_command(struct btmrvl_private *priv)
 266 {
 267         int ret = 0;
 268
 269         if (priv->btmrvl_dev.hscfgcmd) {
 270                 priv->btmrvl_dev.hscfgcmd = 0;
 271                 btmrvl_send_hscfg_cmd(priv);
 272         }
 273
 274         if (priv->btmrvl_dev.pscmd) {
 275                 priv->btmrvl_dev.pscmd = 0;
 276                 btmrvl_enable_ps(priv);
 277         }
 278
 279         if (priv->btmrvl_dev.hscmd) {
 280                 priv->btmrvl_dev.hscmd = 0;
 281
 282                 if (priv->btmrvl_dev.hsmode) {
 283                         ret = btmrvl_enable_hs(priv);
 284                 } else {
 285                         ret = priv->hw_wakeup_firmware(priv);
 286                         priv->adapter->hs_state = HS_DEACTIVATED;
 287                 }
 288         }
 289
 290         return ret;
 291 }
 292
 293 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 294 {
 295         int ret = 0;
 296
 297         if (!skb || !skb->data)
 298                 return -EINVAL;
 299
 300         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 301                 BT_ERR("Tx Error: Bad skb length %d : %d",
 302                                                 skb->len, BTM_UPLD_SIZE);
 303                 return -EINVAL;
 304         }
 305
 306         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 307                 struct sk_buff *tmp = skb;
 308
 309                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 310                 if (!skb) {
 311                         BT_ERR("Tx Error: realloc_headroom failed %d",
 312                                 BTM_HEADER_LEN);
 313                         skb = tmp;
 314                         return -EINVAL;
 315                 }
 316
 317                 kfree_skb(tmp);
 318         }
 319
 320         skb_push(skb, BTM_HEADER_LEN);
 321
 322         /* header type: byte[3]
 323          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 324          * header length: byte[2][1][0]
 325          */
 326
 327         skb->data[0] = (skb->len & 0x0000ff);
 328         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 329         skb->data[2] = (skb->len & 0xff0000) >> 16;
 330         skb->data[3] = bt_cb(skb)->pkt_type;
 331
 332         if (priv->hw_host_to_card)
 333                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 334
 335         return ret;
 336 }
 337
 338 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 339 {
 340         skb_queue_head_init(&priv->adapter->tx_queue);
 341
 342         priv->adapter->ps_state = PS_AWAKE;
 343
 344         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 345 }
 346
 347 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 348 {
 349         skb_queue_purge(&priv->adapter->tx_queue);
 350
 351         kfree(priv->adapter);
 352
 353         priv->adapter = NULL;
 354 }
 355
 356 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 357 {
 358         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 359
 360         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 361
 362         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 363                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 364                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 365                                                         skb->data, skb->len);
 366                 return -EBUSY;
 367         }
 368
 369         switch (bt_cb(skb)->pkt_type) {
 370         case HCI_COMMAND_PKT:
 371                 hdev->stat.cmd_tx++;
 372                 break;
 373
 374         case HCI_ACLDATA_PKT:
 375                 hdev->stat.acl_tx++;
 376                 break;
 377
 378         case HCI_SCODATA_PKT:
 379                 hdev->stat.sco_tx++;
 380                 break;
 381         }
 382
 383         skb_queue_tail(&priv->adapter->tx_queue, skb);
 384
 385         wake_up_interruptible(&priv->main_thread.wait_q);
 386
 387         return 0;
 388 }
 389
 390 static int btmrvl_flush(struct hci_dev *hdev)
 391 {
 392         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 393
 394         skb_queue_purge(&priv->adapter->tx_queue);
 395
 396         return 0;
 397 }
 398
 399 static int btmrvl_close(struct hci_dev *hdev)
 400 {
 401         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 402
 403         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 404                 return 0;
 405
 406         skb_queue_purge(&priv->adapter->tx_queue);
 407
 408         return 0;
 409 }
 410
 411 static int btmrvl_open(struct hci_dev *hdev)
 412 {
 413         set_bit(HCI_RUNNING, &hdev->flags);
 414
 415         return 0;
 416 }
 417
 418 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
 419                                     u8 *data, int len)
 420 {
 421         int ret;
 422
 423         data[0] = 0x00;
 424         data[1] = 0x00;
 425         data[2] = 0x00;
 426         data[3] = len;
 427
 428         print_hex_dump_bytes("Calibration data: ",
 429                              DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
 430
 431         ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
 432                                    BT_CAL_HDR_LEN + len);
 433         if (ret)
 434                 BT_ERR("Failed to download caibration data\n");
 435
 436         return 0;
 437 }
 438
 439 static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
 440 {
 441         struct device_node *dt_node;
 442         u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
 443         const char name[] = "btmrvl_caldata";
 444         const char property[] = "btmrvl,caldata";
 445         int ret;
 446
 447         dt_node = of_find_node_by_name(NULL, name);
 448         if (!dt_node)
 449                 return -ENODEV;
 450
 451         ret = of_property_read_u8_array(dt_node, property,
 452                                         cal_data + BT_CAL_HDR_LEN,
 453                                         BT_CAL_DATA_SIZE);
 454         if (ret)
 455                 return ret;
 456
 457         BT_DBG("Use cal data from device tree");
 458         ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE);
 459         if (ret) {
 460                 BT_ERR("Fail to download calibrate data");
 461                 return ret;
 462         }
 463
 464         return 0;
 465 }
 466
 467 static int btmrvl_setup(struct hci_dev *hdev)
 468 {
 469         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 470
 471         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 472
 473         btmrvl_cal_data_dt(priv);
 474
 475         priv->btmrvl_dev.psmode = 1;
 476         btmrvl_enable_ps(priv);
 477
 478         priv->btmrvl_dev.gpio_gap = 0xffff;
 479         btmrvl_send_hscfg_cmd(priv);
 480
 481         return 0;
 482 }
 483
 484 /*
 485  * This function handles the event generated by firmware, rx data
 486  * received from firmware, and tx data sent from kernel.
 487  */
 488 static int btmrvl_service_main_thread(void *data)
 489 {
 490         struct btmrvl_thread *thread = data;
 491         struct btmrvl_private *priv = thread->priv;
 492         struct btmrvl_adapter *adapter = priv->adapter;
 493         wait_queue_t wait;
 494         struct sk_buff *skb;
 495         ulong flags;
 496
 497         init_waitqueue_entry(&wait, current);
 498
 499         for (;;) {
 500                 add_wait_queue(&thread->wait_q, &wait);
 501
 502                 set_current_state(TASK_INTERRUPTIBLE);
 503                 if (kthread_should_stop()) {
 504                         BT_DBG("main_thread: break from main thread");
 505                         break;
 506                 }
 507
 508                 if (adapter->wakeup_tries ||
 509                                 ((!adapter->int_count) &&
 510                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 511                                 skb_queue_empty(&adapter->tx_queue)))) {
 512                         BT_DBG("main_thread is sleeping...");
 513                         schedule();
 514                 }
 515
 516                 set_current_state(TASK_RUNNING);
 517
 518                 remove_wait_queue(&thread->wait_q, &wait);
 519
 520                 BT_DBG("main_thread woke up");
 521
 522                 spin_lock_irqsave(&priv->driver_lock, flags);
 523                 if (adapter->int_count) {
 524                         adapter->int_count = 0;
 525                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 526                         priv->hw_process_int_status(priv);
 527                 } else if (adapter->ps_state == PS_SLEEP &&
 528                                         !skb_queue_empty(&adapter->tx_queue)) {
 529                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 530                         adapter->wakeup_tries++;
 531                         priv->hw_wakeup_firmware(priv);
 532                         continue;
 533                 } else {
 534                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 535                 }
 536
 537                 if (adapter->ps_state == PS_SLEEP)
 538                         continue;
 539
 540                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 541                         continue;
 542
 543                 skb = skb_dequeue(&adapter->tx_queue);
 544                 if (skb) {
 545                         if (btmrvl_tx_pkt(priv, skb))
 546                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 547                         else
 548                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 549
 550                         kfree_skb(skb);
 551                 }
 552         }
 553
 554         return 0;
 555 }
 556
 557 int btmrvl_register_hdev(struct btmrvl_private *priv)
 558 {
 559         struct hci_dev *hdev = NULL;
 560         int ret;
 561
 562         hdev = hci_alloc_dev();
 563         if (!hdev) {
 564                 BT_ERR("Can not allocate HCI device");
 565                 goto err_hdev;
 566         }
 567
 568         priv->btmrvl_dev.hcidev = hdev;
 569         hci_set_drvdata(hdev, priv);
 570
 571         hdev->bus   = HCI_SDIO;
 572         hdev->open  = btmrvl_open;
 573         hdev->close = btmrvl_close;
 574         hdev->flush = btmrvl_flush;
 575         hdev->send  = btmrvl_send_frame;
 576         hdev->setup = btmrvl_setup;
 577
 578         hdev->dev_type = priv->btmrvl_dev.dev_type;
 579
 580         ret = hci_register_dev(hdev);
 581         if (ret < 0) {
 582                 BT_ERR("Can not register HCI device");
 583                 goto err_hci_register_dev;
 584         }
 585
 586 #ifdef CONFIG_DEBUG_FS
 587         btmrvl_debugfs_init(hdev);
 588 #endif
 589
 590         return 0;
 591
 592 err_hci_register_dev:
 593         hci_free_dev(hdev);
 594
 595 err_hdev:
 596         /* Stop the thread servicing the interrupts */
 597         kthread_stop(priv->main_thread.task);
 598
 599         btmrvl_free_adapter(priv);
 600         kfree(priv);
 601
 602         return -ENOMEM;
 603 }
 604 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 605
 606 struct btmrvl_private *btmrvl_add_card(void *card)
 607 {
 608         struct btmrvl_private *priv;
 609
 610         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 611         if (!priv) {
 612                 BT_ERR("Can not allocate priv");
 613                 goto err_priv;
 614         }
 615
 616         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 617         if (!priv->adapter) {
 618                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 619                 goto err_adapter;
 620         }
 621
 622         btmrvl_init_adapter(priv);
 623
 624         BT_DBG("Starting kthread...");
 625         priv->main_thread.priv = priv;
 626         spin_lock_init(&priv->driver_lock);
 627
 628         init_waitqueue_head(&priv->main_thread.wait_q);
 629         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 630                                 &priv->main_thread, "btmrvl_main_service");
 631
 632         priv->btmrvl_dev.card = card;
 633         priv->btmrvl_dev.tx_dnld_rdy = true;
 634
 635         return priv;
 636
 637 err_adapter:
 638         kfree(priv);
 639
 640 err_priv:
 641         return NULL;
 642 }
 643 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 644
 645 int btmrvl_remove_card(struct btmrvl_private *priv)
 646 {
 647         struct hci_dev *hdev;
 648
 649         hdev = priv->btmrvl_dev.hcidev;
 650
 651         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 652
 653         kthread_stop(priv->main_thread.task);
 654
 655 #ifdef CONFIG_DEBUG_FS
 656         btmrvl_debugfs_remove(hdev);
 657 #endif
 658
 659         hci_unregister_dev(hdev);
 660
 661         hci_free_dev(hdev);
 662
 663         priv->btmrvl_dev.hcidev = NULL;
 664
 665         btmrvl_free_adapter(priv);
 666
 667         kfree(priv);
 668
 669         return 0;
 670 }
 671 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 672
 673 MODULE_AUTHOR("Marvell International Ltd.");
 674 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 675 MODULE_VERSION(VERSION);
 676 MODULE_LICENSE("GPL v2");