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