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 #include "btmrvl_sdio.h"
  28
  29 #define VERSION "1.0"
  30
  31 /*
  32  * This function is called by interface specific interrupt handler.
  33  * It updates Power Save & Host Sleep states, and wakes up the main
  34  * thread.
  35  */
  36 void btmrvl_interrupt(struct btmrvl_private *priv)
  37 {
  38         priv->adapter->ps_state = PS_AWAKE;
  39
  40         priv->adapter->wakeup_tries = 0;
  41
  42         priv->adapter->int_count++;
  43
  44         wake_up_interruptible(&priv->main_thread.wait_q);
  45 }
  46 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
  47
  48 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
  49 {
  50         struct hci_event_hdr *hdr = (void *) skb->data;
  51
  52         if (hdr->evt == HCI_EV_CMD_COMPLETE) {
  53                 struct hci_ev_cmd_complete *ec;
  54                 u16 opcode;
  55
  56                 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  57                 opcode = __le16_to_cpu(ec->opcode);
  58
  59                 if (priv->btmrvl_dev.sendcmdflag) {
  60                         priv->btmrvl_dev.sendcmdflag = false;
  61                         priv->adapter->cmd_complete = true;
  62                         wake_up_interruptible(&priv->adapter->cmd_wait_q);
  63
  64                         if (hci_opcode_ogf(opcode) == 0x3F) {
  65                                 BT_DBG("vendor event skipped: opcode=%#4.4x",
  66                                        opcode);
  67                                 kfree_skb(skb);
  68                                 return false;
  69                         }
  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_EVENT_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_EVENT_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_EVENT_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                         BT_DBG("HS ACTIVATED!");
 118                 } else {
 119                         BT_DBG("HS Enable failed");
 120                 }
 121                 break;
 122
 123         case BT_EVENT_MODULE_CFG_REQ:
 124                 if (priv->btmrvl_dev.sendcmdflag &&
 125                                 event->data[1] == MODULE_BRINGUP_REQ) {
 126                         BT_DBG("EVENT:%s",
 127                                 ((event->data[2] == MODULE_BROUGHT_UP) ||
 128                                 (event->data[2] == MODULE_ALREADY_UP)) ?
 129                                 "Bring-up succeed" : "Bring-up failed");
 130
 131                         if (event->length > 3 && event->data[3])
 132                                 priv->btmrvl_dev.dev_type = HCI_AMP;
 133                         else
 134                                 priv->btmrvl_dev.dev_type = HCI_BREDR;
 135
 136                         BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 137                 } else if (priv->btmrvl_dev.sendcmdflag &&
 138                                 event->data[1] == MODULE_SHUTDOWN_REQ) {
 139                         BT_DBG("EVENT:%s", (event->data[2]) ?
 140                                 "Shutdown failed" : "Shutdown succeed");
 141                 } else {
 142                         BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 143                         ret = -EINVAL;
 144                 }
 145                 break;
 146
 147         case BT_EVENT_POWER_STATE:
 148                 if (event->data[1] == BT_PS_SLEEP)
 149                         adapter->ps_state = PS_SLEEP;
 150                 BT_DBG("EVENT:%s",
 151                         (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 152                 break;
 153
 154         default:
 155                 BT_DBG("Unknown Event=%d", event->data[0]);
 156                 ret = -EINVAL;
 157                 break;
 158         }
 159
 160 exit:
 161         if (!ret)
 162                 kfree_skb(skb);
 163
 164         return ret;
 165 }
 166 EXPORT_SYMBOL_GPL(btmrvl_process_event);
 167
 168 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
 169                                 const void *param, u8 len)
 170 {
 171         struct sk_buff *skb;
 172         struct hci_command_hdr *hdr;
 173
 174         skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
 175         if (skb == NULL) {
 176                 BT_ERR("No free skb");
 177                 return -ENOMEM;
 178         }
 179
 180         hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
 181         hdr->opcode = cpu_to_le16(opcode);
 182         hdr->plen = len;
 183
 184         if (len)
 185                 memcpy(skb_put(skb, len), param, len);
 186
 187         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 188
 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         wake_up_interruptible(&priv->main_thread.wait_q);
 196
 197         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 198                                 priv->adapter->cmd_complete,
 199                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
 200                 return -ETIMEDOUT;
 201
 202         return 0;
 203 }
 204
 205 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
 206 {
 207         int ret;
 208
 209         ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
 210         if (ret)
 211                 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
 212
 213         return ret;
 214 }
 215 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 216
 217 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 218 {
 219         int ret;
 220         u8 param[2];
 221
 222         param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 223         param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 224
 225         BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
 226                param[0], param[1]);
 227
 228         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
 229         if (ret)
 230                 BT_ERR("HSCFG command failed\n");
 231
 232         return ret;
 233 }
 234 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 235
 236 int btmrvl_enable_ps(struct btmrvl_private *priv)
 237 {
 238         int ret;
 239         u8 param;
 240
 241         if (priv->btmrvl_dev.psmode)
 242                 param = BT_PS_ENABLE;
 243         else
 244                 param = BT_PS_DISABLE;
 245
 246         ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
 247         if (ret)
 248                 BT_ERR("PSMODE command failed\n");
 249
 250         return 0;
 251 }
 252 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 253
 254 int btmrvl_enable_hs(struct btmrvl_private *priv)
 255 {
 256         int ret;
 257
 258         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
 259         if (ret)
 260                 BT_ERR("Host sleep enable command failed\n");
 261
 262         return ret;
 263 }
 264 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 265
 266 int btmrvl_prepare_command(struct btmrvl_private *priv)
 267 {
 268         int ret = 0;
 269
 270         if (priv->btmrvl_dev.hscfgcmd) {
 271                 priv->btmrvl_dev.hscfgcmd = 0;
 272                 btmrvl_send_hscfg_cmd(priv);
 273         }
 274
 275         if (priv->btmrvl_dev.pscmd) {
 276                 priv->btmrvl_dev.pscmd = 0;
 277                 btmrvl_enable_ps(priv);
 278         }
 279
 280         if (priv->btmrvl_dev.hscmd) {
 281                 priv->btmrvl_dev.hscmd = 0;
 282
 283                 if (priv->btmrvl_dev.hsmode) {
 284                         ret = btmrvl_enable_hs(priv);
 285                 } else {
 286                         ret = priv->hw_wakeup_firmware(priv);
 287                         priv->adapter->hs_state = HS_DEACTIVATED;
 288                 }
 289         }
 290
 291         return ret;
 292 }
 293
 294 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 295 {
 296         int ret = 0;
 297
 298         if (!skb || !skb->data)
 299                 return -EINVAL;
 300
 301         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 302                 BT_ERR("Tx Error: Bad skb length %d : %d",
 303                                                 skb->len, BTM_UPLD_SIZE);
 304                 return -EINVAL;
 305         }
 306
 307         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 308                 struct sk_buff *tmp = skb;
 309
 310                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 311                 if (!skb) {
 312                         BT_ERR("Tx Error: realloc_headroom failed %d",
 313                                 BTM_HEADER_LEN);
 314                         skb = tmp;
 315                         return -EINVAL;
 316                 }
 317
 318                 kfree_skb(tmp);
 319         }
 320
 321         skb_push(skb, BTM_HEADER_LEN);
 322
 323         /* header type: byte[3]
 324          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 325          * header length: byte[2][1][0]
 326          */
 327
 328         skb->data[0] = (skb->len & 0x0000ff);
 329         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 330         skb->data[2] = (skb->len & 0xff0000) >> 16;
 331         skb->data[3] = bt_cb(skb)->pkt_type;
 332
 333         if (priv->hw_host_to_card)
 334                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 335
 336         return ret;
 337 }
 338
 339 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 340 {
 341         int buf_size;
 342
 343         skb_queue_head_init(&priv->adapter->tx_queue);
 344
 345         priv->adapter->ps_state = PS_AWAKE;
 346
 347         buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
 348         priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
 349         if (!priv->adapter->hw_regs_buf) {
 350                 priv->adapter->hw_regs = NULL;
 351                 BT_ERR("Unable to allocate buffer for hw_regs.");
 352         } else {
 353                 priv->adapter->hw_regs =
 354                         (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
 355                                          BTSDIO_DMA_ALIGN);
 356                 BT_DBG("hw_regs_buf=%p hw_regs=%p",
 357                        priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
 358         }
 359
 360         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 361 }
 362
 363 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 364 {
 365         skb_queue_purge(&priv->adapter->tx_queue);
 366
 367         kfree(priv->adapter->hw_regs_buf);
 368         kfree(priv->adapter);
 369
 370         priv->adapter = NULL;
 371 }
 372
 373 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 374 {
 375         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 376
 377         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 378
 379         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 380                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 381                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 382                                                         skb->data, skb->len);
 383                 return -EBUSY;
 384         }
 385
 386         switch (bt_cb(skb)->pkt_type) {
 387         case HCI_COMMAND_PKT:
 388                 hdev->stat.cmd_tx++;
 389                 break;
 390
 391         case HCI_ACLDATA_PKT:
 392                 hdev->stat.acl_tx++;
 393                 break;
 394
 395         case HCI_SCODATA_PKT:
 396                 hdev->stat.sco_tx++;
 397                 break;
 398         }
 399
 400         skb_queue_tail(&priv->adapter->tx_queue, skb);
 401
 402         wake_up_interruptible(&priv->main_thread.wait_q);
 403
 404         return 0;
 405 }
 406
 407 static int btmrvl_flush(struct hci_dev *hdev)
 408 {
 409         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 410
 411         skb_queue_purge(&priv->adapter->tx_queue);
 412
 413         return 0;
 414 }
 415
 416 static int btmrvl_close(struct hci_dev *hdev)
 417 {
 418         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 419
 420         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 421                 return 0;
 422
 423         skb_queue_purge(&priv->adapter->tx_queue);
 424
 425         return 0;
 426 }
 427
 428 static int btmrvl_open(struct hci_dev *hdev)
 429 {
 430         set_bit(HCI_RUNNING, &hdev->flags);
 431
 432         return 0;
 433 }
 434
 435 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
 436                                     u8 *data, int len)
 437 {
 438         int ret;
 439
 440         data[0] = 0x00;
 441         data[1] = 0x00;
 442         data[2] = 0x00;
 443         data[3] = len;
 444
 445         print_hex_dump_bytes("Calibration data: ",
 446                              DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
 447
 448         ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
 449                                    BT_CAL_HDR_LEN + len);
 450         if (ret)
 451                 BT_ERR("Failed to download caibration data\n");
 452
 453         return 0;
 454 }
 455
 456 static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
 457 {
 458         struct device_node *dt_node;
 459         u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
 460         const char name[] = "btmrvl_caldata";
 461         const char property[] = "btmrvl,caldata";
 462         int ret;
 463
 464         dt_node = of_find_node_by_name(NULL, name);
 465         if (!dt_node)
 466                 return -ENODEV;
 467
 468         ret = of_property_read_u8_array(dt_node, property,
 469                                         cal_data + BT_CAL_HDR_LEN,
 470                                         BT_CAL_DATA_SIZE);
 471         if (ret)
 472                 return ret;
 473
 474         BT_DBG("Use cal data from device tree");
 475         ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE);
 476         if (ret) {
 477                 BT_ERR("Fail to download calibrate data");
 478                 return ret;
 479         }
 480
 481         return 0;
 482 }
 483
 484 static int btmrvl_setup(struct hci_dev *hdev)
 485 {
 486         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 487
 488         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 489
 490         btmrvl_cal_data_dt(priv);
 491
 492         priv->btmrvl_dev.psmode = 1;
 493         btmrvl_enable_ps(priv);
 494
 495         priv->btmrvl_dev.gpio_gap = 0xffff;
 496         btmrvl_send_hscfg_cmd(priv);
 497
 498         return 0;
 499 }
 500
 501 /*
 502  * This function handles the event generated by firmware, rx data
 503  * received from firmware, and tx data sent from kernel.
 504  */
 505 static int btmrvl_service_main_thread(void *data)
 506 {
 507         struct btmrvl_thread *thread = data;
 508         struct btmrvl_private *priv = thread->priv;
 509         struct btmrvl_adapter *adapter = priv->adapter;
 510         wait_queue_t wait;
 511         struct sk_buff *skb;
 512         ulong flags;
 513
 514         init_waitqueue_entry(&wait, current);
 515
 516         for (;;) {
 517                 add_wait_queue(&thread->wait_q, &wait);
 518
 519                 set_current_state(TASK_INTERRUPTIBLE);
 520                 if (kthread_should_stop()) {
 521                         BT_DBG("main_thread: break from main thread");
 522                         break;
 523                 }
 524
 525                 if (adapter->wakeup_tries ||
 526                                 ((!adapter->int_count) &&
 527                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 528                                 skb_queue_empty(&adapter->tx_queue)))) {
 529                         BT_DBG("main_thread is sleeping...");
 530                         schedule();
 531                 }
 532
 533                 set_current_state(TASK_RUNNING);
 534
 535                 remove_wait_queue(&thread->wait_q, &wait);
 536
 537                 BT_DBG("main_thread woke up");
 538
 539                 spin_lock_irqsave(&priv->driver_lock, flags);
 540                 if (adapter->int_count) {
 541                         adapter->int_count = 0;
 542                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 543                         priv->hw_process_int_status(priv);
 544                 } else if (adapter->ps_state == PS_SLEEP &&
 545                                         !skb_queue_empty(&adapter->tx_queue)) {
 546                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 547                         adapter->wakeup_tries++;
 548                         priv->hw_wakeup_firmware(priv);
 549                         continue;
 550                 } else {
 551                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 552                 }
 553
 554                 if (adapter->ps_state == PS_SLEEP)
 555                         continue;
 556
 557                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 558                         continue;
 559
 560                 skb = skb_dequeue(&adapter->tx_queue);
 561                 if (skb) {
 562                         if (btmrvl_tx_pkt(priv, skb))
 563                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 564                         else
 565                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 566
 567                         kfree_skb(skb);
 568                 }
 569         }
 570
 571         return 0;
 572 }
 573
 574 int btmrvl_register_hdev(struct btmrvl_private *priv)
 575 {
 576         struct hci_dev *hdev = NULL;
 577         int ret;
 578
 579         hdev = hci_alloc_dev();
 580         if (!hdev) {
 581                 BT_ERR("Can not allocate HCI device");
 582                 goto err_hdev;
 583         }
 584
 585         priv->btmrvl_dev.hcidev = hdev;
 586         hci_set_drvdata(hdev, priv);
 587
 588         hdev->bus   = HCI_SDIO;
 589         hdev->open  = btmrvl_open;
 590         hdev->close = btmrvl_close;
 591         hdev->flush = btmrvl_flush;
 592         hdev->send  = btmrvl_send_frame;
 593         hdev->setup = btmrvl_setup;
 594
 595         hdev->dev_type = priv->btmrvl_dev.dev_type;
 596
 597         ret = hci_register_dev(hdev);
 598         if (ret < 0) {
 599                 BT_ERR("Can not register HCI device");
 600                 goto err_hci_register_dev;
 601         }
 602
 603 #ifdef CONFIG_DEBUG_FS
 604         btmrvl_debugfs_init(hdev);
 605 #endif
 606
 607         return 0;
 608
 609 err_hci_register_dev:
 610         hci_free_dev(hdev);
 611
 612 err_hdev:
 613         /* Stop the thread servicing the interrupts */
 614         kthread_stop(priv->main_thread.task);
 615
 616         btmrvl_free_adapter(priv);
 617         kfree(priv);
 618
 619         return -ENOMEM;
 620 }
 621 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 622
 623 struct btmrvl_private *btmrvl_add_card(void *card)
 624 {
 625         struct btmrvl_private *priv;
 626
 627         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 628         if (!priv) {
 629                 BT_ERR("Can not allocate priv");
 630                 goto err_priv;
 631         }
 632
 633         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 634         if (!priv->adapter) {
 635                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 636                 goto err_adapter;
 637         }
 638
 639         btmrvl_init_adapter(priv);
 640
 641         BT_DBG("Starting kthread...");
 642         priv->main_thread.priv = priv;
 643         spin_lock_init(&priv->driver_lock);
 644
 645         init_waitqueue_head(&priv->main_thread.wait_q);
 646         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 647                                 &priv->main_thread, "btmrvl_main_service");
 648
 649         priv->btmrvl_dev.card = card;
 650         priv->btmrvl_dev.tx_dnld_rdy = true;
 651
 652         return priv;
 653
 654 err_adapter:
 655         kfree(priv);
 656
 657 err_priv:
 658         return NULL;
 659 }
 660 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 661
 662 int btmrvl_remove_card(struct btmrvl_private *priv)
 663 {
 664         struct hci_dev *hdev;
 665
 666         hdev = priv->btmrvl_dev.hcidev;
 667
 668         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 669
 670         kthread_stop(priv->main_thread.task);
 671
 672 #ifdef CONFIG_DEBUG_FS
 673         btmrvl_debugfs_remove(hdev);
 674 #endif
 675
 676         hci_unregister_dev(hdev);
 677
 678         hci_free_dev(hdev);
 679
 680         priv->btmrvl_dev.hcidev = NULL;
 681
 682         btmrvl_free_adapter(priv);
 683
 684         kfree(priv);
 685
 686         return 0;
 687 }
 688 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 689
 690 MODULE_AUTHOR("Marvell International Ltd.");
 691 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 692 MODULE_VERSION(VERSION);
 693 MODULE_LICENSE("GPL v2");