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_send_hscfg_cmd(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) {
 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_HOST_SLEEP_CONFIG));
 217         cmd->length = 2;
 218         cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 219         cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 220
 221         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 222
 223         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 224         skb_queue_head(&priv->adapter->tx_queue, skb);
 225
 226         BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", cmd->data[0],
 227                cmd->data[1]);
 228
 229         return 0;
 230 }
 231 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 232
 233 int btmrvl_enable_ps(struct btmrvl_private *priv)
 234 {
 235         struct sk_buff *skb;
 236         struct btmrvl_cmd *cmd;
 237
 238         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 239         if (skb == NULL) {
 240                 BT_ERR("No free skb");
 241                 return -ENOMEM;
 242         }
 243
 244         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 245         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
 246                                         BT_CMD_AUTO_SLEEP_MODE));
 247         cmd->length = 1;
 248
 249         if (priv->btmrvl_dev.psmode)
 250                 cmd->data[0] = BT_PS_ENABLE;
 251         else
 252                 cmd->data[0] = BT_PS_DISABLE;
 253
 254         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 255
 256         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 257         skb_queue_head(&priv->adapter->tx_queue, skb);
 258
 259         BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
 260
 261         return 0;
 262 }
 263 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 264
 265 int btmrvl_enable_hs(struct btmrvl_private *priv)
 266 {
 267         struct sk_buff *skb;
 268         struct btmrvl_cmd *cmd;
 269         int ret = 0;
 270
 271         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 272         if (skb == NULL) {
 273                 BT_ERR("No free skb");
 274                 return -ENOMEM;
 275         }
 276
 277         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 278         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
 279         cmd->length = 0;
 280
 281         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 282
 283         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 284         skb_queue_head(&priv->adapter->tx_queue, skb);
 285
 286         BT_DBG("Queue hs enable Command");
 287
 288         wake_up_interruptible(&priv->main_thread.wait_q);
 289
 290         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 291                         priv->adapter->hs_state,
 292                         msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
 293                 ret = -ETIMEDOUT;
 294                 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
 295                                                 priv->adapter->ps_state,
 296                                                 priv->adapter->wakeup_tries);
 297         }
 298
 299         return ret;
 300 }
 301 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 302
 303 int btmrvl_prepare_command(struct btmrvl_private *priv)
 304 {
 305         int ret = 0;
 306
 307         if (priv->btmrvl_dev.hscfgcmd) {
 308                 priv->btmrvl_dev.hscfgcmd = 0;
 309                 btmrvl_send_hscfg_cmd(priv);
 310         }
 311
 312         if (priv->btmrvl_dev.pscmd) {
 313                 priv->btmrvl_dev.pscmd = 0;
 314                 btmrvl_enable_ps(priv);
 315         }
 316
 317         if (priv->btmrvl_dev.hscmd) {
 318                 priv->btmrvl_dev.hscmd = 0;
 319
 320                 if (priv->btmrvl_dev.hsmode) {
 321                         ret = btmrvl_enable_hs(priv);
 322                 } else {
 323                         ret = priv->hw_wakeup_firmware(priv);
 324                         priv->adapter->hs_state = HS_DEACTIVATED;
 325                 }
 326         }
 327
 328         return ret;
 329 }
 330
 331 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 332 {
 333         int ret = 0;
 334
 335         if (!skb || !skb->data)
 336                 return -EINVAL;
 337
 338         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 339                 BT_ERR("Tx Error: Bad skb length %d : %d",
 340                                                 skb->len, BTM_UPLD_SIZE);
 341                 return -EINVAL;
 342         }
 343
 344         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 345                 struct sk_buff *tmp = skb;
 346
 347                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 348                 if (!skb) {
 349                         BT_ERR("Tx Error: realloc_headroom failed %d",
 350                                 BTM_HEADER_LEN);
 351                         skb = tmp;
 352                         return -EINVAL;
 353                 }
 354
 355                 kfree_skb(tmp);
 356         }
 357
 358         skb_push(skb, BTM_HEADER_LEN);
 359
 360         /* header type: byte[3]
 361          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 362          * header length: byte[2][1][0]
 363          */
 364
 365         skb->data[0] = (skb->len & 0x0000ff);
 366         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 367         skb->data[2] = (skb->len & 0xff0000) >> 16;
 368         skb->data[3] = bt_cb(skb)->pkt_type;
 369
 370         if (priv->hw_host_to_card)
 371                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 372
 373         return ret;
 374 }
 375
 376 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 377 {
 378         skb_queue_head_init(&priv->adapter->tx_queue);
 379
 380         priv->adapter->ps_state = PS_AWAKE;
 381
 382         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 383 }
 384
 385 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 386 {
 387         skb_queue_purge(&priv->adapter->tx_queue);
 388
 389         kfree(priv->adapter);
 390
 391         priv->adapter = NULL;
 392 }
 393
 394 static int btmrvl_ioctl(struct hci_dev *hdev,
 395                                 unsigned int cmd, unsigned long arg)
 396 {
 397         return -ENOIOCTLCMD;
 398 }
 399
 400 static int btmrvl_send_frame(struct sk_buff *skb)
 401 {
 402         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 403         struct btmrvl_private *priv = NULL;
 404
 405         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 406
 407         if (!hdev) {
 408                 BT_ERR("Frame for unknown HCI device");
 409                 return -ENODEV;
 410         }
 411
 412         priv = hci_get_drvdata(hdev);
 413
 414         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 415                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 416                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 417                                                         skb->data, skb->len);
 418                 return -EBUSY;
 419         }
 420
 421         switch (bt_cb(skb)->pkt_type) {
 422         case HCI_COMMAND_PKT:
 423                 hdev->stat.cmd_tx++;
 424                 break;
 425
 426         case HCI_ACLDATA_PKT:
 427                 hdev->stat.acl_tx++;
 428                 break;
 429
 430         case HCI_SCODATA_PKT:
 431                 hdev->stat.sco_tx++;
 432                 break;
 433         }
 434
 435         skb_queue_tail(&priv->adapter->tx_queue, skb);
 436
 437         wake_up_interruptible(&priv->main_thread.wait_q);
 438
 439         return 0;
 440 }
 441
 442 static int btmrvl_flush(struct hci_dev *hdev)
 443 {
 444         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 445
 446         skb_queue_purge(&priv->adapter->tx_queue);
 447
 448         return 0;
 449 }
 450
 451 static int btmrvl_close(struct hci_dev *hdev)
 452 {
 453         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 454
 455         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 456                 return 0;
 457
 458         skb_queue_purge(&priv->adapter->tx_queue);
 459
 460         return 0;
 461 }
 462
 463 static int btmrvl_open(struct hci_dev *hdev)
 464 {
 465         set_bit(HCI_RUNNING, &hdev->flags);
 466
 467         return 0;
 468 }
 469
 470 /*
 471  * This function handles the event generated by firmware, rx data
 472  * received from firmware, and tx data sent from kernel.
 473  */
 474 static int btmrvl_service_main_thread(void *data)
 475 {
 476         struct btmrvl_thread *thread = data;
 477         struct btmrvl_private *priv = thread->priv;
 478         struct btmrvl_adapter *adapter = priv->adapter;
 479         wait_queue_t wait;
 480         struct sk_buff *skb;
 481         ulong flags;
 482
 483         init_waitqueue_entry(&wait, current);
 484
 485         for (;;) {
 486                 add_wait_queue(&thread->wait_q, &wait);
 487
 488                 set_current_state(TASK_INTERRUPTIBLE);
 489
 490                 if (adapter->wakeup_tries ||
 491                                 ((!adapter->int_count) &&
 492                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 493                                 skb_queue_empty(&adapter->tx_queue)))) {
 494                         BT_DBG("main_thread is sleeping...");
 495                         schedule();
 496                 }
 497
 498                 set_current_state(TASK_RUNNING);
 499
 500                 remove_wait_queue(&thread->wait_q, &wait);
 501
 502                 BT_DBG("main_thread woke up");
 503
 504                 if (kthread_should_stop()) {
 505                         BT_DBG("main_thread: break from main thread");
 506                         break;
 507                 }
 508
 509                 spin_lock_irqsave(&priv->driver_lock, flags);
 510                 if (adapter->int_count) {
 511                         adapter->int_count = 0;
 512                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 513                         priv->hw_process_int_status(priv);
 514                 } else if (adapter->ps_state == PS_SLEEP &&
 515                                         !skb_queue_empty(&adapter->tx_queue)) {
 516                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 517                         adapter->wakeup_tries++;
 518                         priv->hw_wakeup_firmware(priv);
 519                         continue;
 520                 } else {
 521                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 522                 }
 523
 524                 if (adapter->ps_state == PS_SLEEP)
 525                         continue;
 526
 527                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 528                         continue;
 529
 530                 skb = skb_dequeue(&adapter->tx_queue);
 531                 if (skb) {
 532                         if (btmrvl_tx_pkt(priv, skb))
 533                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 534                         else
 535                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 536
 537                         kfree_skb(skb);
 538                 }
 539         }
 540
 541         return 0;
 542 }
 543
 544 int btmrvl_register_hdev(struct btmrvl_private *priv)
 545 {
 546         struct hci_dev *hdev = NULL;
 547         int ret;
 548
 549         hdev = hci_alloc_dev();
 550         if (!hdev) {
 551                 BT_ERR("Can not allocate HCI device");
 552                 goto err_hdev;
 553         }
 554
 555         priv->btmrvl_dev.hcidev = hdev;
 556         hci_set_drvdata(hdev, priv);
 557
 558         hdev->bus = HCI_SDIO;
 559         hdev->open = btmrvl_open;
 560         hdev->close = btmrvl_close;
 561         hdev->flush = btmrvl_flush;
 562         hdev->send = btmrvl_send_frame;
 563         hdev->ioctl = btmrvl_ioctl;
 564
 565         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 566
 567         hdev->dev_type = priv->btmrvl_dev.dev_type;
 568
 569         ret = hci_register_dev(hdev);
 570         if (ret < 0) {
 571                 BT_ERR("Can not register HCI device");
 572                 goto err_hci_register_dev;
 573         }
 574
 575 #ifdef CONFIG_DEBUG_FS
 576         btmrvl_debugfs_init(hdev);
 577 #endif
 578
 579         return 0;
 580
 581 err_hci_register_dev:
 582         hci_free_dev(hdev);
 583
 584 err_hdev:
 585         /* Stop the thread servicing the interrupts */
 586         kthread_stop(priv->main_thread.task);
 587
 588         btmrvl_free_adapter(priv);
 589         kfree(priv);
 590
 591         return -ENOMEM;
 592 }
 593 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 594
 595 struct btmrvl_private *btmrvl_add_card(void *card)
 596 {
 597         struct btmrvl_private *priv;
 598
 599         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 600         if (!priv) {
 601                 BT_ERR("Can not allocate priv");
 602                 goto err_priv;
 603         }
 604
 605         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 606         if (!priv->adapter) {
 607                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 608                 goto err_adapter;
 609         }
 610
 611         btmrvl_init_adapter(priv);
 612
 613         BT_DBG("Starting kthread...");
 614         priv->main_thread.priv = priv;
 615         spin_lock_init(&priv->driver_lock);
 616
 617         init_waitqueue_head(&priv->main_thread.wait_q);
 618         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 619                                 &priv->main_thread, "btmrvl_main_service");
 620
 621         priv->btmrvl_dev.card = card;
 622         priv->btmrvl_dev.tx_dnld_rdy = true;
 623
 624         return priv;
 625
 626 err_adapter:
 627         kfree(priv);
 628
 629 err_priv:
 630         return NULL;
 631 }
 632 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 633
 634 int btmrvl_remove_card(struct btmrvl_private *priv)
 635 {
 636         struct hci_dev *hdev;
 637
 638         hdev = priv->btmrvl_dev.hcidev;
 639
 640         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 641
 642         kthread_stop(priv->main_thread.task);
 643
 644 #ifdef CONFIG_DEBUG_FS
 645         btmrvl_debugfs_remove(hdev);
 646 #endif
 647
 648         hci_unregister_dev(hdev);
 649
 650         hci_free_dev(hdev);
 651
 652         priv->btmrvl_dev.hcidev = NULL;
 653
 654         btmrvl_free_adapter(priv);
 655
 656         kfree(priv);
 657
 658         return 0;
 659 }
 660 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 661
 662 MODULE_AUTHOR("Marvell International Ltd.");
 663 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 664 MODULE_VERSION(VERSION);
 665 MODULE_LICENSE("GPL v2");