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 #include <linux/mmc/sdio_func.h> 26 27 #include "btmrvl_drv.h" 28 #include "btmrvl_sdio.h" 29 30 #define VERSION "1.0" 31 32 /* 33 * This function is called by interface specific interrupt handler. 34 * It updates Power Save & Host Sleep states, and wakes up the main 35 * thread. 36 */ 37 void btmrvl_interrupt(struct btmrvl_private *priv) 38 { 39 priv->adapter->ps_state = PS_AWAKE; 40 41 priv->adapter->wakeup_tries = 0; 42 43 priv->adapter->int_count++; 44 45 if (priv->adapter->hs_state == HS_ACTIVATED) { 46 BT_DBG("BT: HS DEACTIVATED in ISR!"); 47 priv->adapter->hs_state = HS_DEACTIVATED; 48 } 49 50 wake_up_interruptible(&priv->main_thread.wait_q); 51 } 52 EXPORT_SYMBOL_GPL(btmrvl_interrupt); 53 54 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb) 55 { 56 struct hci_event_hdr *hdr = (void *) skb->data; 57 58 if (hdr->evt == HCI_EV_CMD_COMPLETE) { 59 struct hci_ev_cmd_complete *ec; 60 u16 opcode; 61 62 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE); 63 opcode = __le16_to_cpu(ec->opcode); 64 65 if (priv->btmrvl_dev.sendcmdflag) { 66 priv->btmrvl_dev.sendcmdflag = false; 67 priv->adapter->cmd_complete = true; 68 wake_up_interruptible(&priv->adapter->cmd_wait_q); 69 70 if (hci_opcode_ogf(opcode) == 0x3F) { 71 BT_DBG("vendor event skipped: opcode=%#4.4x", 72 opcode); 73 kfree_skb(skb); 74 return false; 75 } 76 } 77 } 78 79 return true; 80 } 81 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt); 82 83 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb) 84 { 85 struct btmrvl_adapter *adapter = priv->adapter; 86 struct btmrvl_event *event; 87 int ret = 0; 88 89 event = (struct btmrvl_event *) skb->data; 90 if (event->ec != 0xff) { 91 BT_DBG("Not Marvell Event=%x", event->ec); 92 ret = -EINVAL; 93 goto exit; 94 } 95 96 switch (event->data[0]) { 97 case BT_EVENT_AUTO_SLEEP_MODE: 98 if (!event->data[2]) { 99 if (event->data[1] == BT_PS_ENABLE) 100 adapter->psmode = 1; 101 else 102 adapter->psmode = 0; 103 BT_DBG("PS Mode:%s", 104 (adapter->psmode) ? "Enable" : "Disable"); 105 } else { 106 BT_DBG("PS Mode command failed"); 107 } 108 break; 109 110 case BT_EVENT_HOST_SLEEP_CONFIG: 111 if (!event->data[3]) 112 BT_DBG("gpio=%x, gap=%x", event->data[1], 113 event->data[2]); 114 else 115 BT_DBG("HSCFG command failed"); 116 break; 117 118 case BT_EVENT_HOST_SLEEP_ENABLE: 119 if (!event->data[1]) { 120 adapter->hs_state = HS_ACTIVATED; 121 if (adapter->psmode) 122 adapter->ps_state = PS_SLEEP; 123 wake_up_interruptible(&adapter->event_hs_wait_q); 124 BT_DBG("HS ACTIVATED!"); 125 } else { 126 BT_DBG("HS Enable failed"); 127 } 128 break; 129 130 case BT_EVENT_MODULE_CFG_REQ: 131 if (priv->btmrvl_dev.sendcmdflag && 132 event->data[1] == MODULE_BRINGUP_REQ) { 133 BT_DBG("EVENT:%s", 134 ((event->data[2] == MODULE_BROUGHT_UP) || 135 (event->data[2] == MODULE_ALREADY_UP)) ? 136 "Bring-up succeed" : "Bring-up failed"); 137 138 if (event->length > 3 && event->data[3]) 139 priv->btmrvl_dev.dev_type = HCI_AMP; 140 else 141 priv->btmrvl_dev.dev_type = HCI_BREDR; 142 143 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type); 144 } else if (priv->btmrvl_dev.sendcmdflag && 145 event->data[1] == MODULE_SHUTDOWN_REQ) { 146 BT_DBG("EVENT:%s", (event->data[2]) ? 147 "Shutdown failed" : "Shutdown succeed"); 148 } else { 149 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP"); 150 ret = -EINVAL; 151 } 152 break; 153 154 case BT_EVENT_POWER_STATE: 155 if (event->data[1] == BT_PS_SLEEP) 156 adapter->ps_state = PS_SLEEP; 157 BT_DBG("EVENT:%s", 158 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE"); 159 break; 160 161 default: 162 BT_DBG("Unknown Event=%d", event->data[0]); 163 ret = -EINVAL; 164 break; 165 } 166 167 exit: 168 if (!ret) 169 kfree_skb(skb); 170 171 return ret; 172 } 173 EXPORT_SYMBOL_GPL(btmrvl_process_event); 174 175 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode, 176 const void *param, u8 len) 177 { 178 struct sk_buff *skb; 179 struct hci_command_hdr *hdr; 180 181 if (priv->surprise_removed) { 182 BT_ERR("Card is removed"); 183 return -EFAULT; 184 } 185 186 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC); 187 if (!skb) { 188 BT_ERR("No free skb"); 189 return -ENOMEM; 190 } 191 192 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE); 193 hdr->opcode = cpu_to_le16(opcode); 194 hdr->plen = len; 195 196 if (len) 197 memcpy(skb_put(skb, len), param, len); 198 199 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; 200 201 skb_queue_head(&priv->adapter->tx_queue, skb); 202 203 priv->btmrvl_dev.sendcmdflag = true; 204 205 priv->adapter->cmd_complete = false; 206 207 wake_up_interruptible(&priv->main_thread.wait_q); 208 209 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q, 210 priv->adapter->cmd_complete || 211 priv->surprise_removed, 212 WAIT_UNTIL_CMD_RESP)) 213 return -ETIMEDOUT; 214 215 if (priv->surprise_removed) 216 return -EFAULT; 217 218 return 0; 219 } 220 221 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd) 222 { 223 int ret; 224 225 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1); 226 if (ret) 227 BT_ERR("module_cfg_cmd(%x) failed", subcmd); 228 229 return ret; 230 } 231 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd); 232 233 static int btmrvl_enable_sco_routing_to_host(struct btmrvl_private *priv) 234 { 235 int ret; 236 u8 subcmd = 0; 237 238 ret = btmrvl_send_sync_cmd(priv, BT_CMD_ROUTE_SCO_TO_HOST, &subcmd, 1); 239 if (ret) 240 BT_ERR("BT_CMD_ROUTE_SCO_TO_HOST command failed: %#x", ret); 241 242 return ret; 243 } 244 245 int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd) 246 { 247 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 248 int ret; 249 250 if (!card->support_pscan_win_report) 251 return 0; 252 253 ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE, 254 &subcmd, 1); 255 if (ret) 256 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret); 257 258 return ret; 259 } 260 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting); 261 262 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv) 263 { 264 int ret; 265 u8 param[2]; 266 267 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8; 268 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff); 269 270 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x", 271 param[0], param[1]); 272 273 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2); 274 if (ret) 275 BT_ERR("HSCFG command failed"); 276 277 return ret; 278 } 279 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd); 280 281 int btmrvl_enable_ps(struct btmrvl_private *priv) 282 { 283 int ret; 284 u8 param; 285 286 if (priv->btmrvl_dev.psmode) 287 param = BT_PS_ENABLE; 288 else 289 param = BT_PS_DISABLE; 290 291 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1); 292 if (ret) 293 BT_ERR("PSMODE command failed"); 294 295 return 0; 296 } 297 EXPORT_SYMBOL_GPL(btmrvl_enable_ps); 298 299 int btmrvl_enable_hs(struct btmrvl_private *priv) 300 { 301 struct btmrvl_adapter *adapter = priv->adapter; 302 int ret; 303 304 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0); 305 if (ret) { 306 BT_ERR("Host sleep enable command failed"); 307 return ret; 308 } 309 310 ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q, 311 adapter->hs_state || 312 priv->surprise_removed, 313 WAIT_UNTIL_HS_STATE_CHANGED); 314 if (ret < 0 || priv->surprise_removed) { 315 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d", 316 ret, adapter->hs_state, adapter->ps_state, 317 adapter->wakeup_tries); 318 } else if (!ret) { 319 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state, 320 adapter->ps_state, adapter->wakeup_tries); 321 ret = -ETIMEDOUT; 322 } else { 323 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state, 324 adapter->ps_state, adapter->wakeup_tries); 325 ret = 0; 326 } 327 328 return ret; 329 } 330 EXPORT_SYMBOL_GPL(btmrvl_enable_hs); 331 332 int btmrvl_prepare_command(struct btmrvl_private *priv) 333 { 334 int ret = 0; 335 336 if (priv->btmrvl_dev.hscfgcmd) { 337 priv->btmrvl_dev.hscfgcmd = 0; 338 btmrvl_send_hscfg_cmd(priv); 339 } 340 341 if (priv->btmrvl_dev.pscmd) { 342 priv->btmrvl_dev.pscmd = 0; 343 btmrvl_enable_ps(priv); 344 } 345 346 if (priv->btmrvl_dev.hscmd) { 347 priv->btmrvl_dev.hscmd = 0; 348 349 if (priv->btmrvl_dev.hsmode) { 350 ret = btmrvl_enable_hs(priv); 351 } else { 352 ret = priv->hw_wakeup_firmware(priv); 353 priv->adapter->hs_state = HS_DEACTIVATED; 354 BT_DBG("BT: HS DEACTIVATED due to host activity!"); 355 } 356 } 357 358 return ret; 359 } 360 361 void btmrvl_firmware_dump(struct btmrvl_private *priv) 362 { 363 if (priv->firmware_dump) 364 priv->firmware_dump(priv); 365 } 366 367 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) 368 { 369 int ret = 0; 370 371 if (!skb || !skb->data) 372 return -EINVAL; 373 374 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) { 375 BT_ERR("Tx Error: Bad skb length %d : %d", 376 skb->len, BTM_UPLD_SIZE); 377 return -EINVAL; 378 } 379 380 skb_push(skb, BTM_HEADER_LEN); 381 382 /* header type: byte[3] 383 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor 384 * header length: byte[2][1][0] 385 */ 386 387 skb->data[0] = (skb->len & 0x0000ff); 388 skb->data[1] = (skb->len & 0x00ff00) >> 8; 389 skb->data[2] = (skb->len & 0xff0000) >> 16; 390 skb->data[3] = bt_cb(skb)->pkt_type; 391 392 if (priv->hw_host_to_card) 393 ret = priv->hw_host_to_card(priv, skb->data, skb->len); 394 395 return ret; 396 } 397 398 static void btmrvl_init_adapter(struct btmrvl_private *priv) 399 { 400 int buf_size; 401 402 skb_queue_head_init(&priv->adapter->tx_queue); 403 404 priv->adapter->ps_state = PS_AWAKE; 405 406 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN); 407 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL); 408 if (!priv->adapter->hw_regs_buf) { 409 priv->adapter->hw_regs = NULL; 410 BT_ERR("Unable to allocate buffer for hw_regs."); 411 } else { 412 priv->adapter->hw_regs = 413 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf, 414 BTSDIO_DMA_ALIGN); 415 BT_DBG("hw_regs_buf=%p hw_regs=%p", 416 priv->adapter->hw_regs_buf, priv->adapter->hw_regs); 417 } 418 419 init_waitqueue_head(&priv->adapter->cmd_wait_q); 420 init_waitqueue_head(&priv->adapter->event_hs_wait_q); 421 } 422 423 static void btmrvl_free_adapter(struct btmrvl_private *priv) 424 { 425 skb_queue_purge(&priv->adapter->tx_queue); 426 427 kfree(priv->adapter->hw_regs_buf); 428 kfree(priv->adapter); 429 430 priv->adapter = NULL; 431 } 432 433 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 434 { 435 struct btmrvl_private *priv = hci_get_drvdata(hdev); 436 437 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len); 438 439 switch (bt_cb(skb)->pkt_type) { 440 case HCI_COMMAND_PKT: 441 hdev->stat.cmd_tx++; 442 break; 443 444 case HCI_ACLDATA_PKT: 445 hdev->stat.acl_tx++; 446 break; 447 448 case HCI_SCODATA_PKT: 449 hdev->stat.sco_tx++; 450 break; 451 } 452 453 skb_queue_tail(&priv->adapter->tx_queue, skb); 454 455 wake_up_interruptible(&priv->main_thread.wait_q); 456 457 return 0; 458 } 459 460 static int btmrvl_flush(struct hci_dev *hdev) 461 { 462 struct btmrvl_private *priv = hci_get_drvdata(hdev); 463 464 skb_queue_purge(&priv->adapter->tx_queue); 465 466 return 0; 467 } 468 469 static int btmrvl_close(struct hci_dev *hdev) 470 { 471 struct btmrvl_private *priv = hci_get_drvdata(hdev); 472 473 skb_queue_purge(&priv->adapter->tx_queue); 474 475 return 0; 476 } 477 478 static int btmrvl_open(struct hci_dev *hdev) 479 { 480 return 0; 481 } 482 483 static int btmrvl_download_cal_data(struct btmrvl_private *priv, 484 u8 *data, int len) 485 { 486 int ret; 487 488 data[0] = 0x00; 489 data[1] = 0x00; 490 data[2] = 0x00; 491 data[3] = len; 492 493 print_hex_dump_bytes("Calibration data: ", 494 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len); 495 496 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data, 497 BT_CAL_HDR_LEN + len); 498 if (ret) 499 BT_ERR("Failed to download caibration data"); 500 501 return 0; 502 } 503 504 static int btmrvl_check_device_tree(struct btmrvl_private *priv) 505 { 506 struct device_node *dt_node; 507 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE]; 508 int ret; 509 u32 val; 510 511 for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") { 512 ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val); 513 if (!ret) 514 priv->btmrvl_dev.gpio_gap = val; 515 516 ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data", 517 cal_data + BT_CAL_HDR_LEN, 518 BT_CAL_DATA_SIZE); 519 if (ret) { 520 of_node_put(dt_node); 521 return ret; 522 } 523 524 BT_DBG("Use cal data from device tree"); 525 ret = btmrvl_download_cal_data(priv, cal_data, 526 BT_CAL_DATA_SIZE); 527 if (ret) { 528 BT_ERR("Fail to download calibrate data"); 529 of_node_put(dt_node); 530 return ret; 531 } 532 } 533 534 return 0; 535 } 536 537 static int btmrvl_setup(struct hci_dev *hdev) 538 { 539 struct btmrvl_private *priv = hci_get_drvdata(hdev); 540 int ret; 541 542 ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ); 543 if (ret) 544 return ret; 545 546 priv->btmrvl_dev.gpio_gap = 0xffff; 547 548 btmrvl_check_device_tree(priv); 549 550 btmrvl_enable_sco_routing_to_host(priv); 551 552 btmrvl_pscan_window_reporting(priv, 0x01); 553 554 priv->btmrvl_dev.psmode = 1; 555 btmrvl_enable_ps(priv); 556 557 btmrvl_send_hscfg_cmd(priv); 558 559 return 0; 560 } 561 562 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 563 { 564 struct sk_buff *skb; 565 long ret; 566 u8 buf[8]; 567 568 buf[0] = MRVL_VENDOR_PKT; 569 buf[1] = sizeof(bdaddr_t); 570 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 571 572 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf, 573 HCI_INIT_TIMEOUT); 574 if (IS_ERR(skb)) { 575 ret = PTR_ERR(skb); 576 BT_ERR("%s: changing btmrvl device address failed (%ld)", 577 hdev->name, ret); 578 return ret; 579 } 580 kfree_skb(skb); 581 582 return 0; 583 } 584 585 /* 586 * This function handles the event generated by firmware, rx data 587 * received from firmware, and tx data sent from kernel. 588 */ 589 static int btmrvl_service_main_thread(void *data) 590 { 591 struct btmrvl_thread *thread = data; 592 struct btmrvl_private *priv = thread->priv; 593 struct btmrvl_adapter *adapter = priv->adapter; 594 wait_queue_t wait; 595 struct sk_buff *skb; 596 ulong flags; 597 598 init_waitqueue_entry(&wait, current); 599 600 for (;;) { 601 add_wait_queue(&thread->wait_q, &wait); 602 603 set_current_state(TASK_INTERRUPTIBLE); 604 if (kthread_should_stop() || priv->surprise_removed) { 605 BT_DBG("main_thread: break from main thread"); 606 break; 607 } 608 609 if (adapter->wakeup_tries || 610 ((!adapter->int_count) && 611 (!priv->btmrvl_dev.tx_dnld_rdy || 612 skb_queue_empty(&adapter->tx_queue)))) { 613 BT_DBG("main_thread is sleeping..."); 614 schedule(); 615 } 616 617 set_current_state(TASK_RUNNING); 618 619 remove_wait_queue(&thread->wait_q, &wait); 620 621 BT_DBG("main_thread woke up"); 622 623 if (kthread_should_stop() || priv->surprise_removed) { 624 BT_DBG("main_thread: break from main thread"); 625 break; 626 } 627 628 spin_lock_irqsave(&priv->driver_lock, flags); 629 if (adapter->int_count) { 630 adapter->int_count = 0; 631 spin_unlock_irqrestore(&priv->driver_lock, flags); 632 priv->hw_process_int_status(priv); 633 } else if (adapter->ps_state == PS_SLEEP && 634 !skb_queue_empty(&adapter->tx_queue)) { 635 spin_unlock_irqrestore(&priv->driver_lock, flags); 636 adapter->wakeup_tries++; 637 priv->hw_wakeup_firmware(priv); 638 continue; 639 } else { 640 spin_unlock_irqrestore(&priv->driver_lock, flags); 641 } 642 643 if (adapter->ps_state == PS_SLEEP) 644 continue; 645 646 if (!priv->btmrvl_dev.tx_dnld_rdy) 647 continue; 648 649 skb = skb_dequeue(&adapter->tx_queue); 650 if (skb) { 651 if (btmrvl_tx_pkt(priv, skb)) 652 priv->btmrvl_dev.hcidev->stat.err_tx++; 653 else 654 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len; 655 656 kfree_skb(skb); 657 } 658 } 659 660 return 0; 661 } 662 663 int btmrvl_register_hdev(struct btmrvl_private *priv) 664 { 665 struct hci_dev *hdev = NULL; 666 int ret; 667 668 hdev = hci_alloc_dev(); 669 if (!hdev) { 670 BT_ERR("Can not allocate HCI device"); 671 goto err_hdev; 672 } 673 674 priv->btmrvl_dev.hcidev = hdev; 675 hci_set_drvdata(hdev, priv); 676 677 hdev->bus = HCI_SDIO; 678 hdev->open = btmrvl_open; 679 hdev->close = btmrvl_close; 680 hdev->flush = btmrvl_flush; 681 hdev->send = btmrvl_send_frame; 682 hdev->setup = btmrvl_setup; 683 hdev->set_bdaddr = btmrvl_set_bdaddr; 684 685 hdev->dev_type = priv->btmrvl_dev.dev_type; 686 687 ret = hci_register_dev(hdev); 688 if (ret < 0) { 689 BT_ERR("Can not register HCI device"); 690 goto err_hci_register_dev; 691 } 692 693 #ifdef CONFIG_DEBUG_FS 694 btmrvl_debugfs_init(hdev); 695 #endif 696 697 return 0; 698 699 err_hci_register_dev: 700 hci_free_dev(hdev); 701 702 err_hdev: 703 /* Stop the thread servicing the interrupts */ 704 kthread_stop(priv->main_thread.task); 705 706 btmrvl_free_adapter(priv); 707 kfree(priv); 708 709 return -ENOMEM; 710 } 711 EXPORT_SYMBOL_GPL(btmrvl_register_hdev); 712 713 struct btmrvl_private *btmrvl_add_card(void *card) 714 { 715 struct btmrvl_private *priv; 716 717 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 718 if (!priv) { 719 BT_ERR("Can not allocate priv"); 720 goto err_priv; 721 } 722 723 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL); 724 if (!priv->adapter) { 725 BT_ERR("Allocate buffer for btmrvl_adapter failed!"); 726 goto err_adapter; 727 } 728 729 btmrvl_init_adapter(priv); 730 731 BT_DBG("Starting kthread..."); 732 priv->main_thread.priv = priv; 733 spin_lock_init(&priv->driver_lock); 734 735 init_waitqueue_head(&priv->main_thread.wait_q); 736 priv->main_thread.task = kthread_run(btmrvl_service_main_thread, 737 &priv->main_thread, "btmrvl_main_service"); 738 if (IS_ERR(priv->main_thread.task)) 739 goto err_thread; 740 741 priv->btmrvl_dev.card = card; 742 priv->btmrvl_dev.tx_dnld_rdy = true; 743 744 return priv; 745 746 err_thread: 747 btmrvl_free_adapter(priv); 748 749 err_adapter: 750 kfree(priv); 751 752 err_priv: 753 return NULL; 754 } 755 EXPORT_SYMBOL_GPL(btmrvl_add_card); 756 757 int btmrvl_remove_card(struct btmrvl_private *priv) 758 { 759 struct hci_dev *hdev; 760 761 hdev = priv->btmrvl_dev.hcidev; 762 763 wake_up_interruptible(&priv->adapter->cmd_wait_q); 764 wake_up_interruptible(&priv->adapter->event_hs_wait_q); 765 766 kthread_stop(priv->main_thread.task); 767 768 #ifdef CONFIG_DEBUG_FS 769 btmrvl_debugfs_remove(hdev); 770 #endif 771 772 hci_unregister_dev(hdev); 773 774 hci_free_dev(hdev); 775 776 priv->btmrvl_dev.hcidev = NULL; 777 778 btmrvl_free_adapter(priv); 779 780 kfree(priv); 781 782 return 0; 783 } 784 EXPORT_SYMBOL_GPL(btmrvl_remove_card); 785 786 MODULE_AUTHOR("Marvell International Ltd."); 787 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION); 788 MODULE_VERSION(VERSION); 789 MODULE_LICENSE("GPL v2"); 790