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 wake_up_interruptible(&adapter->event_hs_wait_q); 118 BT_DBG("HS ACTIVATED!"); 119 } else { 120 BT_DBG("HS Enable failed"); 121 } 122 break; 123 124 case BT_EVENT_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 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode, 170 const void *param, u8 len) 171 { 172 struct sk_buff *skb; 173 struct hci_command_hdr *hdr; 174 175 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC); 176 if (skb == NULL) { 177 BT_ERR("No free skb"); 178 return -ENOMEM; 179 } 180 181 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE); 182 hdr->opcode = cpu_to_le16(opcode); 183 hdr->plen = len; 184 185 if (len) 186 memcpy(skb_put(skb, len), param, len); 187 188 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; 189 190 skb_queue_head(&priv->adapter->tx_queue, skb); 191 192 priv->btmrvl_dev.sendcmdflag = true; 193 194 priv->adapter->cmd_complete = false; 195 196 wake_up_interruptible(&priv->main_thread.wait_q); 197 198 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q, 199 priv->adapter->cmd_complete, 200 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) 201 return -ETIMEDOUT; 202 203 return 0; 204 } 205 206 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd) 207 { 208 int ret; 209 210 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1); 211 if (ret) 212 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd); 213 214 return ret; 215 } 216 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd); 217 218 int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd) 219 { 220 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 221 int ret; 222 223 if (!card->support_pscan_win_report) 224 return 0; 225 226 ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE, 227 &subcmd, 1); 228 if (ret) 229 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret); 230 231 return ret; 232 } 233 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting); 234 235 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv) 236 { 237 int ret; 238 u8 param[2]; 239 240 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8; 241 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff); 242 243 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x", 244 param[0], param[1]); 245 246 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2); 247 if (ret) 248 BT_ERR("HSCFG command failed\n"); 249 250 return ret; 251 } 252 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd); 253 254 int btmrvl_enable_ps(struct btmrvl_private *priv) 255 { 256 int ret; 257 u8 param; 258 259 if (priv->btmrvl_dev.psmode) 260 param = BT_PS_ENABLE; 261 else 262 param = BT_PS_DISABLE; 263 264 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1); 265 if (ret) 266 BT_ERR("PSMODE command failed\n"); 267 268 return 0; 269 } 270 EXPORT_SYMBOL_GPL(btmrvl_enable_ps); 271 272 int btmrvl_enable_hs(struct btmrvl_private *priv) 273 { 274 struct btmrvl_adapter *adapter = priv->adapter; 275 int ret; 276 277 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0); 278 if (ret) { 279 BT_ERR("Host sleep enable command failed\n"); 280 return ret; 281 } 282 283 ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q, 284 adapter->hs_state, 285 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED)); 286 if (ret < 0) { 287 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d", 288 ret, adapter->hs_state, adapter->ps_state, 289 adapter->wakeup_tries); 290 } else if (!ret) { 291 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state, 292 adapter->ps_state, adapter->wakeup_tries); 293 ret = -ETIMEDOUT; 294 } else { 295 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state, 296 adapter->ps_state, adapter->wakeup_tries); 297 ret = 0; 298 } 299 300 return ret; 301 } 302 EXPORT_SYMBOL_GPL(btmrvl_enable_hs); 303 304 int btmrvl_prepare_command(struct btmrvl_private *priv) 305 { 306 int ret = 0; 307 308 if (priv->btmrvl_dev.hscfgcmd) { 309 priv->btmrvl_dev.hscfgcmd = 0; 310 btmrvl_send_hscfg_cmd(priv); 311 } 312 313 if (priv->btmrvl_dev.pscmd) { 314 priv->btmrvl_dev.pscmd = 0; 315 btmrvl_enable_ps(priv); 316 } 317 318 if (priv->btmrvl_dev.hscmd) { 319 priv->btmrvl_dev.hscmd = 0; 320 321 if (priv->btmrvl_dev.hsmode) { 322 ret = btmrvl_enable_hs(priv); 323 } else { 324 ret = priv->hw_wakeup_firmware(priv); 325 priv->adapter->hs_state = HS_DEACTIVATED; 326 } 327 } 328 329 return ret; 330 } 331 332 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) 333 { 334 int ret = 0; 335 336 if (!skb || !skb->data) 337 return -EINVAL; 338 339 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) { 340 BT_ERR("Tx Error: Bad skb length %d : %d", 341 skb->len, BTM_UPLD_SIZE); 342 return -EINVAL; 343 } 344 345 if (skb_headroom(skb) < BTM_HEADER_LEN) { 346 struct sk_buff *tmp = skb; 347 348 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN); 349 if (!skb) { 350 BT_ERR("Tx Error: realloc_headroom failed %d", 351 BTM_HEADER_LEN); 352 skb = tmp; 353 return -EINVAL; 354 } 355 356 kfree_skb(tmp); 357 } 358 359 skb_push(skb, BTM_HEADER_LEN); 360 361 /* header type: byte[3] 362 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor 363 * header length: byte[2][1][0] 364 */ 365 366 skb->data[0] = (skb->len & 0x0000ff); 367 skb->data[1] = (skb->len & 0x00ff00) >> 8; 368 skb->data[2] = (skb->len & 0xff0000) >> 16; 369 skb->data[3] = bt_cb(skb)->pkt_type; 370 371 if (priv->hw_host_to_card) 372 ret = priv->hw_host_to_card(priv, skb->data, skb->len); 373 374 return ret; 375 } 376 377 static void btmrvl_init_adapter(struct btmrvl_private *priv) 378 { 379 int buf_size; 380 381 skb_queue_head_init(&priv->adapter->tx_queue); 382 383 priv->adapter->ps_state = PS_AWAKE; 384 385 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN); 386 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL); 387 if (!priv->adapter->hw_regs_buf) { 388 priv->adapter->hw_regs = NULL; 389 BT_ERR("Unable to allocate buffer for hw_regs."); 390 } else { 391 priv->adapter->hw_regs = 392 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf, 393 BTSDIO_DMA_ALIGN); 394 BT_DBG("hw_regs_buf=%p hw_regs=%p", 395 priv->adapter->hw_regs_buf, priv->adapter->hw_regs); 396 } 397 398 init_waitqueue_head(&priv->adapter->cmd_wait_q); 399 init_waitqueue_head(&priv->adapter->event_hs_wait_q); 400 } 401 402 static void btmrvl_free_adapter(struct btmrvl_private *priv) 403 { 404 skb_queue_purge(&priv->adapter->tx_queue); 405 406 kfree(priv->adapter->hw_regs_buf); 407 kfree(priv->adapter); 408 409 priv->adapter = NULL; 410 } 411 412 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 413 { 414 struct btmrvl_private *priv = hci_get_drvdata(hdev); 415 416 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len); 417 418 if (!test_bit(HCI_RUNNING, &hdev->flags)) { 419 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags); 420 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET, 421 skb->data, skb->len); 422 return -EBUSY; 423 } 424 425 switch (bt_cb(skb)->pkt_type) { 426 case HCI_COMMAND_PKT: 427 hdev->stat.cmd_tx++; 428 break; 429 430 case HCI_ACLDATA_PKT: 431 hdev->stat.acl_tx++; 432 break; 433 434 case HCI_SCODATA_PKT: 435 hdev->stat.sco_tx++; 436 break; 437 } 438 439 skb_queue_tail(&priv->adapter->tx_queue, skb); 440 441 wake_up_interruptible(&priv->main_thread.wait_q); 442 443 return 0; 444 } 445 446 static int btmrvl_flush(struct hci_dev *hdev) 447 { 448 struct btmrvl_private *priv = hci_get_drvdata(hdev); 449 450 skb_queue_purge(&priv->adapter->tx_queue); 451 452 return 0; 453 } 454 455 static int btmrvl_close(struct hci_dev *hdev) 456 { 457 struct btmrvl_private *priv = hci_get_drvdata(hdev); 458 459 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 460 return 0; 461 462 skb_queue_purge(&priv->adapter->tx_queue); 463 464 return 0; 465 } 466 467 static int btmrvl_open(struct hci_dev *hdev) 468 { 469 set_bit(HCI_RUNNING, &hdev->flags); 470 471 return 0; 472 } 473 474 static int btmrvl_download_cal_data(struct btmrvl_private *priv, 475 u8 *data, int len) 476 { 477 int ret; 478 479 data[0] = 0x00; 480 data[1] = 0x00; 481 data[2] = 0x00; 482 data[3] = len; 483 484 print_hex_dump_bytes("Calibration data: ", 485 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len); 486 487 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data, 488 BT_CAL_HDR_LEN + len); 489 if (ret) 490 BT_ERR("Failed to download caibration data\n"); 491 492 return 0; 493 } 494 495 static int btmrvl_cal_data_dt(struct btmrvl_private *priv) 496 { 497 struct device_node *dt_node; 498 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE]; 499 const char name[] = "btmrvl_caldata"; 500 const char property[] = "btmrvl,caldata"; 501 int ret; 502 503 dt_node = of_find_node_by_name(NULL, name); 504 if (!dt_node) 505 return -ENODEV; 506 507 ret = of_property_read_u8_array(dt_node, property, 508 cal_data + BT_CAL_HDR_LEN, 509 BT_CAL_DATA_SIZE); 510 if (ret) 511 return ret; 512 513 BT_DBG("Use cal data from device tree"); 514 ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE); 515 if (ret) { 516 BT_ERR("Fail to download calibrate data"); 517 return ret; 518 } 519 520 return 0; 521 } 522 523 static int btmrvl_setup(struct hci_dev *hdev) 524 { 525 struct btmrvl_private *priv = hci_get_drvdata(hdev); 526 527 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ); 528 529 btmrvl_cal_data_dt(priv); 530 531 btmrvl_pscan_window_reporting(priv, 0x01); 532 533 priv->btmrvl_dev.psmode = 1; 534 btmrvl_enable_ps(priv); 535 536 priv->btmrvl_dev.gpio_gap = 0xffff; 537 btmrvl_send_hscfg_cmd(priv); 538 539 return 0; 540 } 541 542 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 543 { 544 struct sk_buff *skb; 545 long ret; 546 u8 buf[8]; 547 548 buf[0] = MRVL_VENDOR_PKT; 549 buf[1] = sizeof(bdaddr_t); 550 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 551 552 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf, 553 HCI_INIT_TIMEOUT); 554 if (IS_ERR(skb)) { 555 ret = PTR_ERR(skb); 556 BT_ERR("%s: changing btmrvl device address failed (%ld)", 557 hdev->name, ret); 558 return ret; 559 } 560 kfree_skb(skb); 561 562 return 0; 563 } 564 565 /* 566 * This function handles the event generated by firmware, rx data 567 * received from firmware, and tx data sent from kernel. 568 */ 569 static int btmrvl_service_main_thread(void *data) 570 { 571 struct btmrvl_thread *thread = data; 572 struct btmrvl_private *priv = thread->priv; 573 struct btmrvl_adapter *adapter = priv->adapter; 574 wait_queue_t wait; 575 struct sk_buff *skb; 576 ulong flags; 577 578 init_waitqueue_entry(&wait, current); 579 580 for (;;) { 581 add_wait_queue(&thread->wait_q, &wait); 582 583 set_current_state(TASK_INTERRUPTIBLE); 584 if (kthread_should_stop()) { 585 BT_DBG("main_thread: break from main thread"); 586 break; 587 } 588 589 if (adapter->wakeup_tries || 590 ((!adapter->int_count) && 591 (!priv->btmrvl_dev.tx_dnld_rdy || 592 skb_queue_empty(&adapter->tx_queue)))) { 593 BT_DBG("main_thread is sleeping..."); 594 schedule(); 595 } 596 597 set_current_state(TASK_RUNNING); 598 599 remove_wait_queue(&thread->wait_q, &wait); 600 601 BT_DBG("main_thread woke up"); 602 603 spin_lock_irqsave(&priv->driver_lock, flags); 604 if (adapter->int_count) { 605 adapter->int_count = 0; 606 spin_unlock_irqrestore(&priv->driver_lock, flags); 607 priv->hw_process_int_status(priv); 608 } else if (adapter->ps_state == PS_SLEEP && 609 !skb_queue_empty(&adapter->tx_queue)) { 610 spin_unlock_irqrestore(&priv->driver_lock, flags); 611 adapter->wakeup_tries++; 612 priv->hw_wakeup_firmware(priv); 613 continue; 614 } else { 615 spin_unlock_irqrestore(&priv->driver_lock, flags); 616 } 617 618 if (adapter->ps_state == PS_SLEEP) 619 continue; 620 621 if (!priv->btmrvl_dev.tx_dnld_rdy) 622 continue; 623 624 skb = skb_dequeue(&adapter->tx_queue); 625 if (skb) { 626 if (btmrvl_tx_pkt(priv, skb)) 627 priv->btmrvl_dev.hcidev->stat.err_tx++; 628 else 629 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len; 630 631 kfree_skb(skb); 632 } 633 } 634 635 return 0; 636 } 637 638 int btmrvl_register_hdev(struct btmrvl_private *priv) 639 { 640 struct hci_dev *hdev = NULL; 641 int ret; 642 643 hdev = hci_alloc_dev(); 644 if (!hdev) { 645 BT_ERR("Can not allocate HCI device"); 646 goto err_hdev; 647 } 648 649 priv->btmrvl_dev.hcidev = hdev; 650 hci_set_drvdata(hdev, priv); 651 652 hdev->bus = HCI_SDIO; 653 hdev->open = btmrvl_open; 654 hdev->close = btmrvl_close; 655 hdev->flush = btmrvl_flush; 656 hdev->send = btmrvl_send_frame; 657 hdev->setup = btmrvl_setup; 658 hdev->set_bdaddr = btmrvl_set_bdaddr; 659 660 hdev->dev_type = priv->btmrvl_dev.dev_type; 661 662 ret = hci_register_dev(hdev); 663 if (ret < 0) { 664 BT_ERR("Can not register HCI device"); 665 goto err_hci_register_dev; 666 } 667 668 #ifdef CONFIG_DEBUG_FS 669 btmrvl_debugfs_init(hdev); 670 #endif 671 672 return 0; 673 674 err_hci_register_dev: 675 hci_free_dev(hdev); 676 677 err_hdev: 678 /* Stop the thread servicing the interrupts */ 679 kthread_stop(priv->main_thread.task); 680 681 btmrvl_free_adapter(priv); 682 kfree(priv); 683 684 return -ENOMEM; 685 } 686 EXPORT_SYMBOL_GPL(btmrvl_register_hdev); 687 688 struct btmrvl_private *btmrvl_add_card(void *card) 689 { 690 struct btmrvl_private *priv; 691 692 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 693 if (!priv) { 694 BT_ERR("Can not allocate priv"); 695 goto err_priv; 696 } 697 698 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL); 699 if (!priv->adapter) { 700 BT_ERR("Allocate buffer for btmrvl_adapter failed!"); 701 goto err_adapter; 702 } 703 704 btmrvl_init_adapter(priv); 705 706 BT_DBG("Starting kthread..."); 707 priv->main_thread.priv = priv; 708 spin_lock_init(&priv->driver_lock); 709 710 init_waitqueue_head(&priv->main_thread.wait_q); 711 priv->main_thread.task = kthread_run(btmrvl_service_main_thread, 712 &priv->main_thread, "btmrvl_main_service"); 713 if (IS_ERR(priv->main_thread.task)) 714 goto err_thread; 715 716 priv->btmrvl_dev.card = card; 717 priv->btmrvl_dev.tx_dnld_rdy = true; 718 719 return priv; 720 721 err_thread: 722 btmrvl_free_adapter(priv); 723 724 err_adapter: 725 kfree(priv); 726 727 err_priv: 728 return NULL; 729 } 730 EXPORT_SYMBOL_GPL(btmrvl_add_card); 731 732 int btmrvl_remove_card(struct btmrvl_private *priv) 733 { 734 struct hci_dev *hdev; 735 736 hdev = priv->btmrvl_dev.hcidev; 737 738 wake_up_interruptible(&priv->adapter->cmd_wait_q); 739 wake_up_interruptible(&priv->adapter->event_hs_wait_q); 740 741 kthread_stop(priv->main_thread.task); 742 743 #ifdef CONFIG_DEBUG_FS 744 btmrvl_debugfs_remove(hdev); 745 #endif 746 747 hci_unregister_dev(hdev); 748 749 hci_free_dev(hdev); 750 751 priv->btmrvl_dev.hcidev = NULL; 752 753 btmrvl_free_adapter(priv); 754 755 kfree(priv); 756 757 return 0; 758 } 759 EXPORT_SYMBOL_GPL(btmrvl_remove_card); 760 761 MODULE_AUTHOR("Marvell International Ltd."); 762 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION); 763 MODULE_VERSION(VERSION); 764 MODULE_LICENSE("GPL v2"); 765