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
  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 void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
  48 {
  49         struct hci_event_hdr *hdr = (void *) skb->data;
  50         struct hci_ev_cmd_complete *ec;
  51         u16 opcode, ocf;
  52
  53         if (hdr->evt == HCI_EV_CMD_COMPLETE) {
  54                 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  55                 opcode = __le16_to_cpu(ec->opcode);
  56                 ocf = hci_opcode_ocf(opcode);
  57                 if (ocf == BT_CMD_MODULE_CFG_REQ &&
  58                                         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 }
  65 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  66
  67 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  68 {
  69         struct btmrvl_adapter *adapter = priv->adapter;
  70         struct btmrvl_event *event;
  71         int ret = 0;
  72
  73         event = (struct btmrvl_event *) skb->data;
  74         if (event->ec != 0xff) {
  75                 BT_DBG("Not Marvell Event=%x", event->ec);
  76                 ret = -EINVAL;
  77                 goto exit;
  78         }
  79
  80         switch (event->data[0]) {
  81         case BT_CMD_AUTO_SLEEP_MODE:
  82                 if (!event->data[2]) {
  83                         if (event->data[1] == BT_PS_ENABLE)
  84                                 adapter->psmode = 1;
  85                         else
  86                                 adapter->psmode = 0;
  87                         BT_DBG("PS Mode:%s",
  88                                 (adapter->psmode) ? "Enable" : "Disable");
  89                 } else {
  90                         BT_DBG("PS Mode command failed");
  91                 }
  92                 break;
  93
  94         case BT_CMD_HOST_SLEEP_CONFIG:
  95                 if (!event->data[3])
  96                         BT_DBG("gpio=%x, gap=%x", event->data[1],
  97                                                         event->data[2]);
  98                 else
  99                         BT_DBG("HSCFG command failed");
 100                 break;
 101
 102         case BT_CMD_HOST_SLEEP_ENABLE:
 103                 if (!event->data[1]) {
 104                         adapter->hs_state = HS_ACTIVATED;
 105                         if (adapter->psmode)
 106                                 adapter->ps_state = PS_SLEEP;
 107                         wake_up_interruptible(&adapter->cmd_wait_q);
 108                         BT_DBG("HS ACTIVATED!");
 109                 } else {
 110                         BT_DBG("HS Enable failed");
 111                 }
 112                 break;
 113
 114         case BT_CMD_MODULE_CFG_REQ:
 115                 if (priv->btmrvl_dev.sendcmdflag &&
 116                                 event->data[1] == MODULE_BRINGUP_REQ) {
 117                         BT_DBG("EVENT:%s",
 118                                 ((event->data[2] == MODULE_BROUGHT_UP) ||
 119                                 (event->data[2] == MODULE_ALREADY_UP)) ?
 120                                 "Bring-up succeed" : "Bring-up failed");
 121
 122                         if (event->length > 3 && event->data[3])
 123                                 priv->btmrvl_dev.dev_type = HCI_AMP;
 124                         else
 125                                 priv->btmrvl_dev.dev_type = HCI_BREDR;
 126
 127                         BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 128                 } else if (priv->btmrvl_dev.sendcmdflag &&
 129                                 event->data[1] == MODULE_SHUTDOWN_REQ) {
 130                         BT_DBG("EVENT:%s", (event->data[2]) ?
 131                                 "Shutdown failed" : "Shutdown succeed");
 132                 } else {
 133                         BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 134                         ret = -EINVAL;
 135                 }
 136                 break;
 137
 138         case BT_EVENT_POWER_STATE:
 139                 if (event->data[1] == BT_PS_SLEEP)
 140                         adapter->ps_state = PS_SLEEP;
 141                 BT_DBG("EVENT:%s",
 142                         (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 143                 break;
 144
 145         default:
 146                 BT_DBG("Unknown Event=%d", event->data[0]);
 147                 ret = -EINVAL;
 148                 break;
 149         }
 150
 151 exit:
 152         if (!ret)
 153                 kfree_skb(skb);
 154
 155         return ret;
 156 }
 157 EXPORT_SYMBOL_GPL(btmrvl_process_event);
 158
 159 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
 160 {
 161         struct sk_buff *skb;
 162         struct btmrvl_cmd *cmd;
 163         int ret = 0;
 164
 165         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 166         if (skb == NULL) {
 167                 BT_ERR("No free skb");
 168                 return -ENOMEM;
 169         }
 170
 171         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 172         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
 173         cmd->length = 1;
 174         cmd->data[0] = subcmd;
 175
 176         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 177
 178         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 179         skb_queue_head(&priv->adapter->tx_queue, skb);
 180
 181         priv->btmrvl_dev.sendcmdflag = true;
 182
 183         priv->adapter->cmd_complete = false;
 184
 185         BT_DBG("Queue module cfg Command");
 186
 187         wake_up_interruptible(&priv->main_thread.wait_q);
 188
 189         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 190                                 priv->adapter->cmd_complete,
 191                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
 192                 ret = -ETIMEDOUT;
 193                 BT_ERR("module_cfg_cmd(%x): timeout: %d",
 194                                         subcmd, priv->btmrvl_dev.sendcmdflag);
 195         }
 196
 197         BT_DBG("module cfg Command done");
 198
 199         return ret;
 200 }
 201 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 202
 203 int btmrvl_enable_ps(struct btmrvl_private *priv)
 204 {
 205         struct sk_buff *skb;
 206         struct btmrvl_cmd *cmd;
 207
 208         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 209         if (skb == NULL) {
 210                 BT_ERR("No free skb");
 211                 return -ENOMEM;
 212         }
 213
 214         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 215         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
 216                                         BT_CMD_AUTO_SLEEP_MODE));
 217         cmd->length = 1;
 218
 219         if (priv->btmrvl_dev.psmode)
 220                 cmd->data[0] = BT_PS_ENABLE;
 221         else
 222                 cmd->data[0] = BT_PS_DISABLE;
 223
 224         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 225
 226         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 227         skb_queue_head(&priv->adapter->tx_queue, skb);
 228
 229         BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
 230
 231         return 0;
 232 }
 233 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 234
 235 static int btmrvl_enable_hs(struct btmrvl_private *priv)
 236 {
 237         struct sk_buff *skb;
 238         struct btmrvl_cmd *cmd;
 239         int ret = 0;
 240
 241         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 242         if (skb == NULL) {
 243                 BT_ERR("No free skb");
 244                 return -ENOMEM;
 245         }
 246
 247         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 248         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
 249         cmd->length = 0;
 250
 251         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 252
 253         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 254         skb_queue_head(&priv->adapter->tx_queue, skb);
 255
 256         BT_DBG("Queue hs enable Command");
 257
 258         wake_up_interruptible(&priv->main_thread.wait_q);
 259
 260         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 261                         priv->adapter->hs_state,
 262                         msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
 263                 ret = -ETIMEDOUT;
 264                 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
 265                                                 priv->adapter->ps_state,
 266                                                 priv->adapter->wakeup_tries);
 267         }
 268
 269         return ret;
 270 }
 271
 272 int btmrvl_prepare_command(struct btmrvl_private *priv)
 273 {
 274         struct sk_buff *skb = NULL;
 275         struct btmrvl_cmd *cmd;
 276         int ret = 0;
 277
 278         if (priv->btmrvl_dev.hscfgcmd) {
 279                 priv->btmrvl_dev.hscfgcmd = 0;
 280
 281                 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 282                 if (skb == NULL) {
 283                         BT_ERR("No free skb");
 284                         return -ENOMEM;
 285                 }
 286
 287                 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 288                 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
 289                 cmd->length = 2;
 290                 cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 291                 cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 292
 293                 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 294
 295                 skb->dev = (void *) priv->btmrvl_dev.hcidev;
 296                 skb_queue_head(&priv->adapter->tx_queue, skb);
 297
 298                 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
 299                                                 cmd->data[0], cmd->data[1]);
 300         }
 301
 302         if (priv->btmrvl_dev.pscmd) {
 303                 priv->btmrvl_dev.pscmd = 0;
 304                 btmrvl_enable_ps(priv);
 305         }
 306
 307         if (priv->btmrvl_dev.hscmd) {
 308                 priv->btmrvl_dev.hscmd = 0;
 309
 310                 if (priv->btmrvl_dev.hsmode) {
 311                         ret = btmrvl_enable_hs(priv);
 312                 } else {
 313                         ret = priv->hw_wakeup_firmware(priv);
 314                         priv->adapter->hs_state = HS_DEACTIVATED;
 315                 }
 316         }
 317
 318         return ret;
 319 }
 320
 321 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 322 {
 323         int ret = 0;
 324
 325         if (!skb || !skb->data)
 326                 return -EINVAL;
 327
 328         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 329                 BT_ERR("Tx Error: Bad skb length %d : %d",
 330                                                 skb->len, BTM_UPLD_SIZE);
 331                 return -EINVAL;
 332         }
 333
 334         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 335                 struct sk_buff *tmp = skb;
 336
 337                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 338                 if (!skb) {
 339                         BT_ERR("Tx Error: realloc_headroom failed %d",
 340                                 BTM_HEADER_LEN);
 341                         skb = tmp;
 342                         return -EINVAL;
 343                 }
 344
 345                 kfree_skb(tmp);
 346         }
 347
 348         skb_push(skb, BTM_HEADER_LEN);
 349
 350         /* header type: byte[3]
 351          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 352          * header length: byte[2][1][0]
 353          */
 354
 355         skb->data[0] = (skb->len & 0x0000ff);
 356         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 357         skb->data[2] = (skb->len & 0xff0000) >> 16;
 358         skb->data[3] = bt_cb(skb)->pkt_type;
 359
 360         if (priv->hw_host_to_card)
 361                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 362
 363         return ret;
 364 }
 365
 366 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 367 {
 368         skb_queue_head_init(&priv->adapter->tx_queue);
 369
 370         priv->adapter->ps_state = PS_AWAKE;
 371
 372         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 373 }
 374
 375 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 376 {
 377         skb_queue_purge(&priv->adapter->tx_queue);
 378
 379         kfree(priv->adapter);
 380
 381         priv->adapter = NULL;
 382 }
 383
 384 static int btmrvl_ioctl(struct hci_dev *hdev,
 385                                 unsigned int cmd, unsigned long arg)
 386 {
 387         return -ENOIOCTLCMD;
 388 }
 389
 390 static void btmrvl_destruct(struct hci_dev *hdev)
 391 {
 392 }
 393
 394 static int btmrvl_send_frame(struct sk_buff *skb)
 395 {
 396         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 397         struct btmrvl_private *priv = NULL;
 398
 399         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 400
 401         if (!hdev || !hdev->driver_data) {
 402                 BT_ERR("Frame for unknown HCI device");
 403                 return -ENODEV;
 404         }
 405
 406         priv = (struct btmrvl_private *) hdev->driver_data;
 407         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 408                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 409                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 410                                                         skb->data, skb->len);
 411                 return -EBUSY;
 412         }
 413
 414         switch (bt_cb(skb)->pkt_type) {
 415         case HCI_COMMAND_PKT:
 416                 hdev->stat.cmd_tx++;
 417                 break;
 418
 419         case HCI_ACLDATA_PKT:
 420                 hdev->stat.acl_tx++;
 421                 break;
 422
 423         case HCI_SCODATA_PKT:
 424                 hdev->stat.sco_tx++;
 425                 break;
 426         }
 427
 428         skb_queue_tail(&priv->adapter->tx_queue, skb);
 429
 430         wake_up_interruptible(&priv->main_thread.wait_q);
 431
 432         return 0;
 433 }
 434
 435 static int btmrvl_flush(struct hci_dev *hdev)
 436 {
 437         struct btmrvl_private *priv = hdev->driver_data;
 438
 439         skb_queue_purge(&priv->adapter->tx_queue);
 440
 441         return 0;
 442 }
 443
 444 static int btmrvl_close(struct hci_dev *hdev)
 445 {
 446         struct btmrvl_private *priv = hdev->driver_data;
 447
 448         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 449                 return 0;
 450
 451         skb_queue_purge(&priv->adapter->tx_queue);
 452
 453         return 0;
 454 }
 455
 456 static int btmrvl_open(struct hci_dev *hdev)
 457 {
 458         set_bit(HCI_RUNNING, &hdev->flags);
 459
 460         return 0;
 461 }
 462
 463 /*
 464  * This function handles the event generated by firmware, rx data
 465  * received from firmware, and tx data sent from kernel.
 466  */
 467 static int btmrvl_service_main_thread(void *data)
 468 {
 469         struct btmrvl_thread *thread = data;
 470         struct btmrvl_private *priv = thread->priv;
 471         struct btmrvl_adapter *adapter = priv->adapter;
 472         wait_queue_t wait;
 473         struct sk_buff *skb;
 474         ulong flags;
 475
 476         init_waitqueue_entry(&wait, current);
 477
 478         for (;;) {
 479                 add_wait_queue(&thread->wait_q, &wait);
 480
 481                 set_current_state(TASK_INTERRUPTIBLE);
 482
 483                 if (adapter->wakeup_tries ||
 484                                 ((!adapter->int_count) &&
 485                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 486                                 skb_queue_empty(&adapter->tx_queue)))) {
 487                         BT_DBG("main_thread is sleeping...");
 488                         schedule();
 489                 }
 490
 491                 set_current_state(TASK_RUNNING);
 492
 493                 remove_wait_queue(&thread->wait_q, &wait);
 494
 495                 BT_DBG("main_thread woke up");
 496
 497                 if (kthread_should_stop()) {
 498                         BT_DBG("main_thread: break from main thread");
 499                         break;
 500                 }
 501
 502                 spin_lock_irqsave(&priv->driver_lock, flags);
 503                 if (adapter->int_count) {
 504                         adapter->int_count = 0;
 505                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 506                         priv->hw_process_int_status(priv);
 507                 } else if (adapter->ps_state == PS_SLEEP &&
 508                                         !skb_queue_empty(&adapter->tx_queue)) {
 509                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 510                         adapter->wakeup_tries++;
 511                         priv->hw_wakeup_firmware(priv);
 512                         continue;
 513                 } else {
 514                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 515                 }
 516
 517                 if (adapter->ps_state == PS_SLEEP)
 518                         continue;
 519
 520                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 521                         continue;
 522
 523                 skb = skb_dequeue(&adapter->tx_queue);
 524                 if (skb) {
 525                         if (btmrvl_tx_pkt(priv, skb))
 526                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 527                         else
 528                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 529
 530                         kfree_skb(skb);
 531                 }
 532         }
 533
 534         return 0;
 535 }
 536
 537 int btmrvl_register_hdev(struct btmrvl_private *priv)
 538 {
 539         struct hci_dev *hdev = NULL;
 540         int ret;
 541
 542         hdev = hci_alloc_dev();
 543         if (!hdev) {
 544                 BT_ERR("Can not allocate HCI device");
 545                 goto err_hdev;
 546         }
 547
 548         priv->btmrvl_dev.hcidev = hdev;
 549         hdev->driver_data = priv;
 550
 551         hdev->bus = HCI_SDIO;
 552         hdev->open = btmrvl_open;
 553         hdev->close = btmrvl_close;
 554         hdev->flush = btmrvl_flush;
 555         hdev->send = btmrvl_send_frame;
 556         hdev->destruct = btmrvl_destruct;
 557         hdev->ioctl = btmrvl_ioctl;
 558         hdev->owner = THIS_MODULE;
 559
 560         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 561
 562         hdev->dev_type = priv->btmrvl_dev.dev_type;
 563
 564         ret = hci_register_dev(hdev);
 565         if (ret < 0) {
 566                 BT_ERR("Can not register HCI device");
 567                 goto err_hci_register_dev;
 568         }
 569
 570 #ifdef CONFIG_DEBUG_FS
 571         btmrvl_debugfs_init(hdev);
 572 #endif
 573
 574         return 0;
 575
 576 err_hci_register_dev:
 577         hci_free_dev(hdev);
 578
 579 err_hdev:
 580         /* Stop the thread servicing the interrupts */
 581         kthread_stop(priv->main_thread.task);
 582
 583         btmrvl_free_adapter(priv);
 584         kfree(priv);
 585
 586         return -ENOMEM;
 587 }
 588 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 589
 590 struct btmrvl_private *btmrvl_add_card(void *card)
 591 {
 592         struct btmrvl_private *priv;
 593
 594         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 595         if (!priv) {
 596                 BT_ERR("Can not allocate priv");
 597                 goto err_priv;
 598         }
 599
 600         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 601         if (!priv->adapter) {
 602                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 603                 goto err_adapter;
 604         }
 605
 606         btmrvl_init_adapter(priv);
 607
 608         BT_DBG("Starting kthread...");
 609         priv->main_thread.priv = priv;
 610         spin_lock_init(&priv->driver_lock);
 611
 612         init_waitqueue_head(&priv->main_thread.wait_q);
 613         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 614                                 &priv->main_thread, "btmrvl_main_service");
 615
 616         priv->btmrvl_dev.card = card;
 617         priv->btmrvl_dev.tx_dnld_rdy = true;
 618
 619         return priv;
 620
 621 err_adapter:
 622         kfree(priv);
 623
 624 err_priv:
 625         return NULL;
 626 }
 627 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 628
 629 int btmrvl_remove_card(struct btmrvl_private *priv)
 630 {
 631         struct hci_dev *hdev;
 632
 633         hdev = priv->btmrvl_dev.hcidev;
 634
 635         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 636
 637         kthread_stop(priv->main_thread.task);
 638
 639 #ifdef CONFIG_DEBUG_FS
 640         btmrvl_debugfs_remove(hdev);
 641 #endif
 642
 643         hci_unregister_dev(hdev);
 644
 645         hci_free_dev(hdev);
 646
 647         priv->btmrvl_dev.hcidev = NULL;
 648
 649         btmrvl_free_adapter(priv);
 650
 651         kfree(priv);
 652
 653         return 0;
 654 }
 655 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 656
 657 MODULE_AUTHOR("Marvell International Ltd.");
 658 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 659 MODULE_VERSION(VERSION);
 660 MODULE_LICENSE("GPL v2");