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");
694