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 bool 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, ogf;
  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                 ogf = hci_opcode_ogf(opcode);
  58
  59                 if (ocf == BT_CMD_MODULE_CFG_REQ &&
  60                                         priv->btmrvl_dev.sendcmdflag) {
  61                         priv->btmrvl_dev.sendcmdflag = false;
  62                         priv->adapter->cmd_complete = true;
  63                         wake_up_interruptible(&priv->adapter->cmd_wait_q);
  64                 }
  65
  66                 if (ogf == OGF) {
  67                         BT_DBG("vendor event skipped: ogf 0x%4.4x", ogf);
  68                         kfree_skb(skb);
  69                         return false;
  70                 }
  71         }
  72
  73         return true;
  74 }
  75 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  76
  77 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  78 {
  79         struct btmrvl_adapter *adapter = priv->adapter;
  80         struct btmrvl_event *event;
  81         int ret = 0;
  82
  83         event = (struct btmrvl_event *) skb->data;
  84         if (event->ec != 0xff) {
  85                 BT_DBG("Not Marvell Event=%x", event->ec);
  86                 ret = -EINVAL;
  87                 goto exit;
  88         }
  89
  90         switch (event->data[0]) {
  91         case BT_CMD_AUTO_SLEEP_MODE:
  92                 if (!event->data[2]) {
  93                         if (event->data[1] == BT_PS_ENABLE)
  94                                 adapter->psmode = 1;
  95                         else
  96                                 adapter->psmode = 0;
  97                         BT_DBG("PS Mode:%s",
  98                                 (adapter->psmode) ? "Enable" : "Disable");
  99                 } else {
 100                         BT_DBG("PS Mode command failed");
 101                 }
 102                 break;
 103
 104         case BT_CMD_HOST_SLEEP_CONFIG:
 105                 if (!event->data[3])
 106                         BT_DBG("gpio=%x, gap=%x", event->data[1],
 107                                                         event->data[2]);
 108                 else
 109                         BT_DBG("HSCFG command failed");
 110                 break;
 111
 112         case BT_CMD_HOST_SLEEP_ENABLE:
 113                 if (!event->data[1]) {
 114                         adapter->hs_state = HS_ACTIVATED;
 115                         if (adapter->psmode)
 116                                 adapter->ps_state = PS_SLEEP;
 117                         wake_up_interruptible(&adapter->cmd_wait_q);
 118                         BT_DBG("HS ACTIVATED!");
 119                 } else {
 120                         BT_DBG("HS Enable failed");
 121                 }
 122                 break;
 123
 124         case BT_CMD_MODULE_CFG_REQ:
 125                 if (priv->btmrvl_dev.sendcmdflag &&
 126                                 event->data[1] == MODULE_BRINGUP_REQ) {
 127                         BT_DBG("EVENT:%s",
 128                                 ((event->data[2] == MODULE_BROUGHT_UP) ||
 129                                 (event->data[2] == MODULE_ALREADY_UP)) ?
 130                                 "Bring-up succeed" : "Bring-up failed");
 131
 132                         if (event->length > 3 && event->data[3])
 133                                 priv->btmrvl_dev.dev_type = HCI_AMP;
 134                         else
 135                                 priv->btmrvl_dev.dev_type = HCI_BREDR;
 136
 137                         BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 138                 } else if (priv->btmrvl_dev.sendcmdflag &&
 139                                 event->data[1] == MODULE_SHUTDOWN_REQ) {
 140                         BT_DBG("EVENT:%s", (event->data[2]) ?
 141                                 "Shutdown failed" : "Shutdown succeed");
 142                 } else {
 143                         BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 144                         ret = -EINVAL;
 145                 }
 146                 break;
 147
 148         case BT_EVENT_POWER_STATE:
 149                 if (event->data[1] == BT_PS_SLEEP)
 150                         adapter->ps_state = PS_SLEEP;
 151                 BT_DBG("EVENT:%s",
 152                         (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 153                 break;
 154
 155         default:
 156                 BT_DBG("Unknown Event=%d", event->data[0]);
 157                 ret = -EINVAL;
 158                 break;
 159         }
 160
 161 exit:
 162         if (!ret)
 163                 kfree_skb(skb);
 164
 165         return ret;
 166 }
 167 EXPORT_SYMBOL_GPL(btmrvl_process_event);
 168
 169 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
 170 {
 171         struct sk_buff *skb;
 172         struct btmrvl_cmd *cmd;
 173         int ret = 0;
 174
 175         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 176         if (skb == NULL) {
 177                 BT_ERR("No free skb");
 178                 return -ENOMEM;
 179         }
 180
 181         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 182         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
 183         cmd->length = 1;
 184         cmd->data[0] = subcmd;
 185
 186         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 187
 188         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 189         skb_queue_head(&priv->adapter->tx_queue, skb);
 190
 191         priv->btmrvl_dev.sendcmdflag = true;
 192
 193         priv->adapter->cmd_complete = false;
 194
 195         BT_DBG("Queue module cfg Command");
 196
 197         wake_up_interruptible(&priv->main_thread.wait_q);
 198
 199         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 200                                 priv->adapter->cmd_complete,
 201                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
 202                 ret = -ETIMEDOUT;
 203                 BT_ERR("module_cfg_cmd(%x): timeout: %d",
 204                                         subcmd, priv->btmrvl_dev.sendcmdflag);
 205         }
 206
 207         BT_DBG("module cfg Command done");
 208
 209         return ret;
 210 }
 211 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 212
 213 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 214 {
 215         struct sk_buff *skb;
 216         struct btmrvl_cmd *cmd;
 217
 218         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 219         if (!skb) {
 220                 BT_ERR("No free skb");
 221                 return -ENOMEM;
 222         }
 223
 224         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 225         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
 226                                                    BT_CMD_HOST_SLEEP_CONFIG));
 227         cmd->length = 2;
 228         cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 229         cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 230
 231         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 232
 233         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 234         skb_queue_head(&priv->adapter->tx_queue, skb);
 235
 236         BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", cmd->data[0],
 237                cmd->data[1]);
 238
 239         return 0;
 240 }
 241 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 242
 243 int btmrvl_enable_ps(struct btmrvl_private *priv)
 244 {
 245         struct sk_buff *skb;
 246         struct btmrvl_cmd *cmd;
 247
 248         skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
 249         if (skb == NULL) {
 250                 BT_ERR("No free skb");
 251                 return -ENOMEM;
 252         }
 253
 254         cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
 255         cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
 256                                         BT_CMD_AUTO_SLEEP_MODE));
 257         cmd->length = 1;
 258
 259         if (priv->btmrvl_dev.psmode)
 260                 cmd->data[0] = BT_PS_ENABLE;
 261         else
 262                 cmd->data[0] = BT_PS_DISABLE;
 263
 264         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 265
 266         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 267         skb_queue_head(&priv->adapter->tx_queue, skb);
 268
 269         BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
 270
 271         return 0;
 272 }
 273 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 274
 275 int btmrvl_enable_hs(struct btmrvl_private *priv)
 276 {
 277         struct sk_buff *skb;
 278         struct btmrvl_cmd *cmd;
 279         int ret = 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_ENABLE));
 289         cmd->length = 0;
 290
 291         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 292
 293         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 294         skb_queue_head(&priv->adapter->tx_queue, skb);
 295
 296         BT_DBG("Queue hs enable Command");
 297
 298         wake_up_interruptible(&priv->main_thread.wait_q);
 299
 300         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 301                         priv->adapter->hs_state,
 302                         msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
 303                 ret = -ETIMEDOUT;
 304                 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
 305                                                 priv->adapter->ps_state,
 306                                                 priv->adapter->wakeup_tries);
 307         }
 308
 309         return ret;
 310 }
 311 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 312
 313 int btmrvl_prepare_command(struct btmrvl_private *priv)
 314 {
 315         int ret = 0;
 316
 317         if (priv->btmrvl_dev.hscfgcmd) {
 318                 priv->btmrvl_dev.hscfgcmd = 0;
 319                 btmrvl_send_hscfg_cmd(priv);
 320         }
 321
 322         if (priv->btmrvl_dev.pscmd) {
 323                 priv->btmrvl_dev.pscmd = 0;
 324                 btmrvl_enable_ps(priv);
 325         }
 326
 327         if (priv->btmrvl_dev.hscmd) {
 328                 priv->btmrvl_dev.hscmd = 0;
 329
 330                 if (priv->btmrvl_dev.hsmode) {
 331                         ret = btmrvl_enable_hs(priv);
 332                 } else {
 333                         ret = priv->hw_wakeup_firmware(priv);
 334                         priv->adapter->hs_state = HS_DEACTIVATED;
 335                 }
 336         }
 337
 338         return ret;
 339 }
 340
 341 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 342 {
 343         int ret = 0;
 344
 345         if (!skb || !skb->data)
 346                 return -EINVAL;
 347
 348         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 349                 BT_ERR("Tx Error: Bad skb length %d : %d",
 350                                                 skb->len, BTM_UPLD_SIZE);
 351                 return -EINVAL;
 352         }
 353
 354         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 355                 struct sk_buff *tmp = skb;
 356
 357                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 358                 if (!skb) {
 359                         BT_ERR("Tx Error: realloc_headroom failed %d",
 360                                 BTM_HEADER_LEN);
 361                         skb = tmp;
 362                         return -EINVAL;
 363                 }
 364
 365                 kfree_skb(tmp);
 366         }
 367
 368         skb_push(skb, BTM_HEADER_LEN);
 369
 370         /* header type: byte[3]
 371          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 372          * header length: byte[2][1][0]
 373          */
 374
 375         skb->data[0] = (skb->len & 0x0000ff);
 376         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 377         skb->data[2] = (skb->len & 0xff0000) >> 16;
 378         skb->data[3] = bt_cb(skb)->pkt_type;
 379
 380         if (priv->hw_host_to_card)
 381                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 382
 383         return ret;
 384 }
 385
 386 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 387 {
 388         skb_queue_head_init(&priv->adapter->tx_queue);
 389
 390         priv->adapter->ps_state = PS_AWAKE;
 391
 392         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 393 }
 394
 395 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 396 {
 397         skb_queue_purge(&priv->adapter->tx_queue);
 398
 399         kfree(priv->adapter);
 400
 401         priv->adapter = NULL;
 402 }
 403
 404 static int btmrvl_ioctl(struct hci_dev *hdev,
 405                                 unsigned int cmd, unsigned long arg)
 406 {
 407         return -ENOIOCTLCMD;
 408 }
 409
 410 static int btmrvl_send_frame(struct sk_buff *skb)
 411 {
 412         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 413         struct btmrvl_private *priv = NULL;
 414
 415         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 416
 417         if (!hdev) {
 418                 BT_ERR("Frame for unknown HCI device");
 419                 return -ENODEV;
 420         }
 421
 422         priv = hci_get_drvdata(hdev);
 423
 424         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 425                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 426                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 427                                                         skb->data, skb->len);
 428                 return -EBUSY;
 429         }
 430
 431         switch (bt_cb(skb)->pkt_type) {
 432         case HCI_COMMAND_PKT:
 433                 hdev->stat.cmd_tx++;
 434                 break;
 435
 436         case HCI_ACLDATA_PKT:
 437                 hdev->stat.acl_tx++;
 438                 break;
 439
 440         case HCI_SCODATA_PKT:
 441                 hdev->stat.sco_tx++;
 442                 break;
 443         }
 444
 445         skb_queue_tail(&priv->adapter->tx_queue, skb);
 446
 447         wake_up_interruptible(&priv->main_thread.wait_q);
 448
 449         return 0;
 450 }
 451
 452 static int btmrvl_flush(struct hci_dev *hdev)
 453 {
 454         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 455
 456         skb_queue_purge(&priv->adapter->tx_queue);
 457
 458         return 0;
 459 }
 460
 461 static int btmrvl_close(struct hci_dev *hdev)
 462 {
 463         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 464
 465         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 466                 return 0;
 467
 468         skb_queue_purge(&priv->adapter->tx_queue);
 469
 470         return 0;
 471 }
 472
 473 static int btmrvl_open(struct hci_dev *hdev)
 474 {
 475         set_bit(HCI_RUNNING, &hdev->flags);
 476
 477         return 0;
 478 }
 479
 480 /*
 481  * This function handles the event generated by firmware, rx data
 482  * received from firmware, and tx data sent from kernel.
 483  */
 484 static int btmrvl_service_main_thread(void *data)
 485 {
 486         struct btmrvl_thread *thread = data;
 487         struct btmrvl_private *priv = thread->priv;
 488         struct btmrvl_adapter *adapter = priv->adapter;
 489         wait_queue_t wait;
 490         struct sk_buff *skb;
 491         ulong flags;
 492
 493         init_waitqueue_entry(&wait, current);
 494
 495         for (;;) {
 496                 add_wait_queue(&thread->wait_q, &wait);
 497
 498                 set_current_state(TASK_INTERRUPTIBLE);
 499
 500                 if (adapter->wakeup_tries ||
 501                                 ((!adapter->int_count) &&
 502                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 503                                 skb_queue_empty(&adapter->tx_queue)))) {
 504                         BT_DBG("main_thread is sleeping...");
 505                         schedule();
 506                 }
 507
 508                 set_current_state(TASK_RUNNING);
 509
 510                 remove_wait_queue(&thread->wait_q, &wait);
 511
 512                 BT_DBG("main_thread woke up");
 513
 514                 if (kthread_should_stop()) {
 515                         BT_DBG("main_thread: break from main thread");
 516                         break;
 517                 }
 518
 519                 spin_lock_irqsave(&priv->driver_lock, flags);
 520                 if (adapter->int_count) {
 521                         adapter->int_count = 0;
 522                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 523                         priv->hw_process_int_status(priv);
 524                 } else if (adapter->ps_state == PS_SLEEP &&
 525                                         !skb_queue_empty(&adapter->tx_queue)) {
 526                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 527                         adapter->wakeup_tries++;
 528                         priv->hw_wakeup_firmware(priv);
 529                         continue;
 530                 } else {
 531                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 532                 }
 533
 534                 if (adapter->ps_state == PS_SLEEP)
 535                         continue;
 536
 537                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 538                         continue;
 539
 540                 skb = skb_dequeue(&adapter->tx_queue);
 541                 if (skb) {
 542                         if (btmrvl_tx_pkt(priv, skb))
 543                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 544                         else
 545                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 546
 547                         kfree_skb(skb);
 548                 }
 549         }
 550
 551         return 0;
 552 }
 553
 554 int btmrvl_register_hdev(struct btmrvl_private *priv)
 555 {
 556         struct hci_dev *hdev = NULL;
 557         int ret;
 558
 559         hdev = hci_alloc_dev();
 560         if (!hdev) {
 561                 BT_ERR("Can not allocate HCI device");
 562                 goto err_hdev;
 563         }
 564
 565         priv->btmrvl_dev.hcidev = hdev;
 566         hci_set_drvdata(hdev, priv);
 567
 568         hdev->bus = HCI_SDIO;
 569         hdev->open = btmrvl_open;
 570         hdev->close = btmrvl_close;
 571         hdev->flush = btmrvl_flush;
 572         hdev->send = btmrvl_send_frame;
 573         hdev->ioctl = btmrvl_ioctl;
 574
 575         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 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");