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 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC); 182 if (skb == NULL) { 183 BT_ERR("No free skb"); 184 return -ENOMEM; 185 } 186 187 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE); 188 hdr->opcode = cpu_to_le16(opcode); 189 hdr->plen = len; 190 191 if (len) 192 memcpy(skb_put(skb, len), param, len); 193 194 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; 195 196 skb_queue_head(&priv->adapter->tx_queue, skb); 197 198 priv->btmrvl_dev.sendcmdflag = true; 199 200 priv->adapter->cmd_complete = false; 201 202 wake_up_interruptible(&priv->main_thread.wait_q); 203 204 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q, 205 priv->adapter->cmd_complete, 206 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) 207 return -ETIMEDOUT; 208 209 return 0; 210 } 211 212 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd) 213 { 214 int ret; 215 216 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1); 217 if (ret) 218 BT_ERR("module_cfg_cmd(%x) failed", subcmd); 219 220 return ret; 221 } 222 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd); 223 224 int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd) 225 { 226 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; 227 int ret; 228 229 if (!card->support_pscan_win_report) 230 return 0; 231 232 ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE, 233 &subcmd, 1); 234 if (ret) 235 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret); 236 237 return ret; 238 } 239 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting); 240 241 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv) 242 { 243 int ret; 244 u8 param[2]; 245 246 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8; 247 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff); 248 249 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x", 250 param[0], param[1]); 251 252 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2); 253 if (ret) 254 BT_ERR("HSCFG command failed"); 255 256 return ret; 257 } 258 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd); 259 260 int btmrvl_enable_ps(struct btmrvl_private *priv) 261 { 262 int ret; 263 u8 param; 264 265 if (priv->btmrvl_dev.psmode) 266 param = BT_PS_ENABLE; 267 else 268 param = BT_PS_DISABLE; 269 270 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1); 271 if (ret) 272 BT_ERR("PSMODE command failed"); 273 274 return 0; 275 } 276 EXPORT_SYMBOL_GPL(btmrvl_enable_ps); 277 278 int btmrvl_enable_hs(struct btmrvl_private *priv) 279 { 280 struct btmrvl_adapter *adapter = priv->adapter; 281 int ret; 282 283 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0); 284 if (ret) { 285 BT_ERR("Host sleep enable command failed"); 286 return ret; 287 } 288 289 ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q, 290 adapter->hs_state, 291 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED)); 292 if (ret < 0) { 293 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d", 294 ret, adapter->hs_state, adapter->ps_state, 295 adapter->wakeup_tries); 296 } else if (!ret) { 297 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state, 298 adapter->ps_state, adapter->wakeup_tries); 299 ret = -ETIMEDOUT; 300 } else { 301 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state, 302 adapter->ps_state, adapter->wakeup_tries); 303 ret = 0; 304 } 305 306 return ret; 307 } 308 EXPORT_SYMBOL_GPL(btmrvl_enable_hs); 309 310 int btmrvl_prepare_command(struct btmrvl_private *priv) 311 { 312 int ret = 0; 313 314 if (priv->btmrvl_dev.hscfgcmd) { 315 priv->btmrvl_dev.hscfgcmd = 0; 316 btmrvl_send_hscfg_cmd(priv); 317 } 318 319 if (priv->btmrvl_dev.pscmd) { 320 priv->btmrvl_dev.pscmd = 0; 321 btmrvl_enable_ps(priv); 322 } 323 324 if (priv->btmrvl_dev.hscmd) { 325 priv->btmrvl_dev.hscmd = 0; 326 327 if (priv->btmrvl_dev.hsmode) { 328 ret = btmrvl_enable_hs(priv); 329 } else { 330 ret = priv->hw_wakeup_firmware(priv); 331 priv->adapter->hs_state = HS_DEACTIVATED; 332 BT_DBG("BT: HS DEACTIVATED due to host activity!"); 333 } 334 } 335 336 return ret; 337 } 338 339 void btmrvl_firmware_dump(struct btmrvl_private *priv) 340 { 341 if (priv->firmware_dump) 342 priv->firmware_dump(priv); 343 } 344 345 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) 346 { 347 int ret = 0; 348 349 if (!skb || !skb->data) 350 return -EINVAL; 351 352 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) { 353 BT_ERR("Tx Error: Bad skb length %d : %d", 354 skb->len, BTM_UPLD_SIZE); 355 return -EINVAL; 356 } 357 358 if (skb_headroom(skb) < BTM_HEADER_LEN) { 359 struct sk_buff *tmp = skb; 360 361 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN); 362 if (!skb) { 363 BT_ERR("Tx Error: realloc_headroom failed %d", 364 BTM_HEADER_LEN); 365 skb = tmp; 366 return -EINVAL; 367 } 368 369 kfree_skb(tmp); 370 } 371 372 skb_push(skb, BTM_HEADER_LEN); 373 374 /* header type: byte[3] 375 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor 376 * header length: byte[2][1][0] 377 */ 378 379 skb->data[0] = (skb->len & 0x0000ff); 380 skb->data[1] = (skb->len & 0x00ff00) >> 8; 381 skb->data[2] = (skb->len & 0xff0000) >> 16; 382 skb->data[3] = bt_cb(skb)->pkt_type; 383 384 if (priv->hw_host_to_card) 385 ret = priv->hw_host_to_card(priv, skb->data, skb->len); 386 387 return ret; 388 } 389 390 static void btmrvl_init_adapter(struct btmrvl_private *priv) 391 { 392 int buf_size; 393 394 skb_queue_head_init(&priv->adapter->tx_queue); 395 396 priv->adapter->ps_state = PS_AWAKE; 397 398 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN); 399 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL); 400 if (!priv->adapter->hw_regs_buf) { 401 priv->adapter->hw_regs = NULL; 402 BT_ERR("Unable to allocate buffer for hw_regs."); 403 } else { 404 priv->adapter->hw_regs = 405 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf, 406 BTSDIO_DMA_ALIGN); 407 BT_DBG("hw_regs_buf=%p hw_regs=%p", 408 priv->adapter->hw_regs_buf, priv->adapter->hw_regs); 409 } 410 411 init_waitqueue_head(&priv->adapter->cmd_wait_q); 412 init_waitqueue_head(&priv->adapter->event_hs_wait_q); 413 } 414 415 static void btmrvl_free_adapter(struct btmrvl_private *priv) 416 { 417 skb_queue_purge(&priv->adapter->tx_queue); 418 419 kfree(priv->adapter->hw_regs_buf); 420 kfree(priv->adapter); 421 422 priv->adapter = NULL; 423 } 424 425 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 426 { 427 struct btmrvl_private *priv = hci_get_drvdata(hdev); 428 429 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len); 430 431 if (!test_bit(HCI_RUNNING, &hdev->flags)) { 432 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags); 433 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET, 434 skb->data, skb->len); 435 return -EBUSY; 436 } 437 438 switch (bt_cb(skb)->pkt_type) { 439 case HCI_COMMAND_PKT: 440 hdev->stat.cmd_tx++; 441 break; 442 443 case HCI_ACLDATA_PKT: 444 hdev->stat.acl_tx++; 445 break; 446 447 case HCI_SCODATA_PKT: 448 hdev->stat.sco_tx++; 449 break; 450 } 451 452 skb_queue_tail(&priv->adapter->tx_queue, skb); 453 454 wake_up_interruptible(&priv->main_thread.wait_q); 455 456 return 0; 457 } 458 459 static int btmrvl_flush(struct hci_dev *hdev) 460 { 461 struct btmrvl_private *priv = hci_get_drvdata(hdev); 462 463 skb_queue_purge(&priv->adapter->tx_queue); 464 465 return 0; 466 } 467 468 static int btmrvl_close(struct hci_dev *hdev) 469 { 470 struct btmrvl_private *priv = hci_get_drvdata(hdev); 471 472 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 473 return 0; 474 475 skb_queue_purge(&priv->adapter->tx_queue); 476 477 return 0; 478 } 479 480 static int btmrvl_open(struct hci_dev *hdev) 481 { 482 set_bit(HCI_RUNNING, &hdev->flags); 483 484 return 0; 485 } 486 487 static int btmrvl_download_cal_data(struct btmrvl_private *priv, 488 u8 *data, int len) 489 { 490 int ret; 491 492 data[0] = 0x00; 493 data[1] = 0x00; 494 data[2] = 0x00; 495 data[3] = len; 496 497 print_hex_dump_bytes("Calibration data: ", 498 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len); 499 500 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data, 501 BT_CAL_HDR_LEN + len); 502 if (ret) 503 BT_ERR("Failed to download caibration data"); 504 505 return 0; 506 } 507 508 static int btmrvl_check_device_tree(struct btmrvl_private *priv) 509 { 510 struct device_node *dt_node; 511 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE]; 512 int ret; 513 u32 val; 514 515 for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") { 516 ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val); 517 if (!ret) 518 priv->btmrvl_dev.gpio_gap = val; 519 520 ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data", 521 cal_data + BT_CAL_HDR_LEN, 522 BT_CAL_DATA_SIZE); 523 if (ret) 524 return ret; 525 526 BT_DBG("Use cal data from device tree"); 527 ret = btmrvl_download_cal_data(priv, cal_data, 528 BT_CAL_DATA_SIZE); 529 if (ret) { 530 BT_ERR("Fail to download calibrate data"); 531 return ret; 532 } 533 } 534 535 return 0; 536 } 537 538 static int btmrvl_setup(struct hci_dev *hdev) 539 { 540 struct btmrvl_private *priv = hci_get_drvdata(hdev); 541 542 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ); 543 544 priv->btmrvl_dev.gpio_gap = 0xffff; 545 546 btmrvl_check_device_tree(priv); 547 548 btmrvl_pscan_window_reporting(priv, 0x01); 549 550 priv->btmrvl_dev.psmode = 1; 551 btmrvl_enable_ps(priv); 552 553 btmrvl_send_hscfg_cmd(priv); 554 555 return 0; 556 } 557 558 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 559 { 560 struct sk_buff *skb; 561 long ret; 562 u8 buf[8]; 563 564 buf[0] = MRVL_VENDOR_PKT; 565 buf[1] = sizeof(bdaddr_t); 566 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 567 568 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf, 569 HCI_INIT_TIMEOUT); 570 if (IS_ERR(skb)) { 571 ret = PTR_ERR(skb); 572 BT_ERR("%s: changing btmrvl device address failed (%ld)", 573 hdev->name, ret); 574 return ret; 575 } 576 kfree_skb(skb); 577 578 return 0; 579 } 580 581 /* 582 * This function handles the event generated by firmware, rx data 583 * received from firmware, and tx data sent from kernel. 584 */ 585 static int btmrvl_service_main_thread(void *data) 586 { 587 struct btmrvl_thread *thread = data; 588 struct btmrvl_private *priv = thread->priv; 589 struct btmrvl_adapter *adapter = priv->adapter; 590 wait_queue_t wait; 591 struct sk_buff *skb; 592 ulong flags; 593 594 init_waitqueue_entry(&wait, current); 595 596 for (;;) { 597 add_wait_queue(&thread->wait_q, &wait); 598 599 set_current_state(TASK_INTERRUPTIBLE); 600 if (kthread_should_stop()) { 601 BT_DBG("main_thread: break from main thread"); 602 break; 603 } 604 605 if (adapter->wakeup_tries || 606 ((!adapter->int_count) && 607 (!priv->btmrvl_dev.tx_dnld_rdy || 608 skb_queue_empty(&adapter->tx_queue)))) { 609 BT_DBG("main_thread is sleeping..."); 610 schedule(); 611 } 612 613 set_current_state(TASK_RUNNING); 614 615 remove_wait_queue(&thread->wait_q, &wait); 616 617 BT_DBG("main_thread woke up"); 618 619 spin_lock_irqsave(&priv->driver_lock, flags); 620 if (adapter->int_count) { 621 adapter->int_count = 0; 622 spin_unlock_irqrestore(&priv->driver_lock, flags); 623 priv->hw_process_int_status(priv); 624 } else if (adapter->ps_state == PS_SLEEP && 625 !skb_queue_empty(&adapter->tx_queue)) { 626 spin_unlock_irqrestore(&priv->driver_lock, flags); 627 adapter->wakeup_tries++; 628 priv->hw_wakeup_firmware(priv); 629 continue; 630 } else { 631 spin_unlock_irqrestore(&priv->driver_lock, flags); 632 } 633 634 if (adapter->ps_state == PS_SLEEP) 635 continue; 636 637 if (!priv->btmrvl_dev.tx_dnld_rdy) 638 continue; 639 640 skb = skb_dequeue(&adapter->tx_queue); 641 if (skb) { 642 if (btmrvl_tx_pkt(priv, skb)) 643 priv->btmrvl_dev.hcidev->stat.err_tx++; 644 else 645 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len; 646 647 kfree_skb(skb); 648 } 649 } 650 651 return 0; 652 } 653 654 int btmrvl_register_hdev(struct btmrvl_private *priv) 655 { 656 struct hci_dev *hdev = NULL; 657 int ret; 658 659 hdev = hci_alloc_dev(); 660 if (!hdev) { 661 BT_ERR("Can not allocate HCI device"); 662 goto err_hdev; 663 } 664 665 priv->btmrvl_dev.hcidev = hdev; 666 hci_set_drvdata(hdev, priv); 667 668 hdev->bus = HCI_SDIO; 669 hdev->open = btmrvl_open; 670 hdev->close = btmrvl_close; 671 hdev->flush = btmrvl_flush; 672 hdev->send = btmrvl_send_frame; 673 hdev->setup = btmrvl_setup; 674 hdev->set_bdaddr = btmrvl_set_bdaddr; 675 676 hdev->dev_type = priv->btmrvl_dev.dev_type; 677 678 ret = hci_register_dev(hdev); 679 if (ret < 0) { 680 BT_ERR("Can not register HCI device"); 681 goto err_hci_register_dev; 682 } 683 684 #ifdef CONFIG_DEBUG_FS 685 btmrvl_debugfs_init(hdev); 686 #endif 687 688 return 0; 689 690 err_hci_register_dev: 691 hci_free_dev(hdev); 692 693 err_hdev: 694 /* Stop the thread servicing the interrupts */ 695 kthread_stop(priv->main_thread.task); 696 697 btmrvl_free_adapter(priv); 698 kfree(priv); 699 700 return -ENOMEM; 701 } 702 EXPORT_SYMBOL_GPL(btmrvl_register_hdev); 703 704 struct btmrvl_private *btmrvl_add_card(void *card) 705 { 706 struct btmrvl_private *priv; 707 708 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 709 if (!priv) { 710 BT_ERR("Can not allocate priv"); 711 goto err_priv; 712 } 713 714 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL); 715 if (!priv->adapter) { 716 BT_ERR("Allocate buffer for btmrvl_adapter failed!"); 717 goto err_adapter; 718 } 719 720 btmrvl_init_adapter(priv); 721 722 BT_DBG("Starting kthread..."); 723 priv->main_thread.priv = priv; 724 spin_lock_init(&priv->driver_lock); 725 726 init_waitqueue_head(&priv->main_thread.wait_q); 727 priv->main_thread.task = kthread_run(btmrvl_service_main_thread, 728 &priv->main_thread, "btmrvl_main_service"); 729 if (IS_ERR(priv->main_thread.task)) 730 goto err_thread; 731 732 priv->btmrvl_dev.card = card; 733 priv->btmrvl_dev.tx_dnld_rdy = true; 734 735 return priv; 736 737 err_thread: 738 btmrvl_free_adapter(priv); 739 740 err_adapter: 741 kfree(priv); 742 743 err_priv: 744 return NULL; 745 } 746 EXPORT_SYMBOL_GPL(btmrvl_add_card); 747 748 int btmrvl_remove_card(struct btmrvl_private *priv) 749 { 750 struct hci_dev *hdev; 751 752 hdev = priv->btmrvl_dev.hcidev; 753 754 wake_up_interruptible(&priv->adapter->cmd_wait_q); 755 wake_up_interruptible(&priv->adapter->event_hs_wait_q); 756 757 kthread_stop(priv->main_thread.task); 758 759 #ifdef CONFIG_DEBUG_FS 760 btmrvl_debugfs_remove(hdev); 761 #endif 762 763 hci_unregister_dev(hdev); 764 765 hci_free_dev(hdev); 766 767 priv->btmrvl_dev.hcidev = NULL; 768 769 btmrvl_free_adapter(priv); 770 771 kfree(priv); 772 773 return 0; 774 } 775 EXPORT_SYMBOL_GPL(btmrvl_remove_card); 776 777 MODULE_AUTHOR("Marvell International Ltd."); 778 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION); 779 MODULE_VERSION(VERSION); 780 MODULE_LICENSE("GPL v2"); 781