1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Marvell Bluetooth driver
4 *
5 * Copyright (C) 2009, Marvell International Ltd.
6 **/
7
8#include <linux/module.h>
9#include <linux/of.h>
10#include <net/bluetooth/bluetooth.h>
11#include <net/bluetooth/hci_core.h>
12#include <linux/mmc/sdio_func.h>
13
14#include "btmrvl_drv.h"
15#include "btmrvl_sdio.h"
16
17#define VERSION "1.0"
18
19/*
20 * This function is called by interface specific interrupt handler.
21 * It updates Power Save & Host Sleep states, and wakes up the main
22 * thread.
23 */
24void btmrvl_interrupt(struct btmrvl_private *priv)
25{
26	priv->adapter->ps_state = PS_AWAKE;
27
28	priv->adapter->wakeup_tries = 0;
29
30	priv->adapter->int_count++;
31
32	if (priv->adapter->hs_state == HS_ACTIVATED) {
33		BT_DBG("BT: HS DEACTIVATED in ISR!");
34		priv->adapter->hs_state = HS_DEACTIVATED;
35	}
36
37	wake_up_interruptible(&priv->main_thread.wait_q);
38}
39EXPORT_SYMBOL_GPL(btmrvl_interrupt);
40
41bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
42{
43	struct hci_event_hdr *hdr = (void *) skb->data;
44
45	if (hdr->evt == HCI_EV_CMD_COMPLETE) {
46		struct hci_ev_cmd_complete *ec;
47		u16 opcode;
48
49		ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
50		opcode = __le16_to_cpu(ec->opcode);
51
52		if (priv->btmrvl_dev.sendcmdflag) {
53			priv->btmrvl_dev.sendcmdflag = false;
54			priv->adapter->cmd_complete = true;
55			wake_up_interruptible(&priv->adapter->cmd_wait_q);
56
57			if (hci_opcode_ogf(opcode) == 0x3F) {
58				BT_DBG("vendor event skipped: opcode=%#4.4x",
59				       opcode);
60				kfree_skb(skb);
61				return false;
62			}
63		}
64	}
65
66	return true;
67}
68EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
69
70int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
71{
72	struct btmrvl_adapter *adapter = priv->adapter;
73	struct btmrvl_event *event;
74	int ret = 0;
75
76	event = (struct btmrvl_event *) skb->data;
77	if (event->ec != 0xff) {
78		BT_DBG("Not Marvell Event=%x", event->ec);
79		ret = -EINVAL;
80		goto exit;
81	}
82
83	switch (event->data[0]) {
84	case BT_EVENT_AUTO_SLEEP_MODE:
85		if (!event->data[2]) {
86			if (event->data[1] == BT_PS_ENABLE)
87				adapter->psmode = 1;
88			else
89				adapter->psmode = 0;
90			BT_DBG("PS Mode:%s",
91				(adapter->psmode) ? "Enable" : "Disable");
92		} else {
93			BT_DBG("PS Mode command failed");
94		}
95		break;
96
97	case BT_EVENT_HOST_SLEEP_CONFIG:
98		if (!event->data[3])
99			BT_DBG("gpio=%x, gap=%x", event->data[1],
100							event->data[2]);
101		else
102			BT_DBG("HSCFG command failed");
103		break;
104
105	case BT_EVENT_HOST_SLEEP_ENABLE:
106		if (!event->data[1]) {
107			adapter->hs_state = HS_ACTIVATED;
108			if (adapter->psmode)
109				adapter->ps_state = PS_SLEEP;
110			wake_up_interruptible(&adapter->event_hs_wait_q);
111			BT_DBG("HS ACTIVATED!");
112		} else {
113			BT_DBG("HS Enable failed");
114		}
115		break;
116
117	case BT_EVENT_MODULE_CFG_REQ:
118		if (priv->btmrvl_dev.sendcmdflag &&
119				event->data[1] == MODULE_BRINGUP_REQ) {
120			BT_DBG("EVENT:%s",
121				((event->data[2] == MODULE_BROUGHT_UP) ||
122				(event->data[2] == MODULE_ALREADY_UP)) ?
123				"Bring-up succeed" : "Bring-up failed");
124
125			if (event->length > 3 && event->data[3])
126				priv->btmrvl_dev.dev_type = HCI_AMP;
127			else
128				priv->btmrvl_dev.dev_type = HCI_PRIMARY;
129
130			BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
131		} else if (priv->btmrvl_dev.sendcmdflag &&
132				event->data[1] == MODULE_SHUTDOWN_REQ) {
133			BT_DBG("EVENT:%s", (event->data[2]) ?
134				"Shutdown failed" : "Shutdown succeed");
135		} else {
136			BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
137			ret = -EINVAL;
138		}
139		break;
140
141	case BT_EVENT_POWER_STATE:
142		if (event->data[1] == BT_PS_SLEEP)
143			adapter->ps_state = PS_SLEEP;
144		BT_DBG("EVENT:%s",
145			(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
146		break;
147
148	default:
149		BT_DBG("Unknown Event=%d", event->data[0]);
150		ret = -EINVAL;
151		break;
152	}
153
154exit:
155	if (!ret)
156		kfree_skb(skb);
157
158	return ret;
159}
160EXPORT_SYMBOL_GPL(btmrvl_process_event);
161
162static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
163				const void *param, u8 len)
164{
165	struct sk_buff *skb;
166	struct hci_command_hdr *hdr;
167
168	if (priv->surprise_removed) {
169		BT_ERR("Card is removed");
170		return -EFAULT;
171	}
172
173	skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_KERNEL);
174	if (!skb) {
175		BT_ERR("No free skb");
176		return -ENOMEM;
177	}
178
179	hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
180	hdr->opcode = cpu_to_le16(opcode);
181	hdr->plen = len;
182
183	if (len)
184		skb_put_data(skb, param, len);
185
186	hci_skb_pkt_type(skb) = MRVL_VENDOR_PKT;
187
188	skb_queue_head(&priv->adapter->tx_queue, skb);
189
190	priv->btmrvl_dev.sendcmdflag = true;
191
192	priv->adapter->cmd_complete = false;
193
194	wake_up_interruptible(&priv->main_thread.wait_q);
195
196	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
197					      priv->adapter->cmd_complete ||
198					      priv->surprise_removed,
199					      WAIT_UNTIL_CMD_RESP))
200		return -ETIMEDOUT;
201
202	if (priv->surprise_removed)
203		return -EFAULT;
204
205	return 0;
206}
207
208int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
209{
210	int ret;
211
212	ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
213	if (ret)
214		BT_ERR("module_cfg_cmd(%x) failed", subcmd);
215
216	return ret;
217}
218EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
219
220static int btmrvl_enable_sco_routing_to_host(struct btmrvl_private *priv)
221{
222	int ret;
223	u8 subcmd = 0;
224
225	ret = btmrvl_send_sync_cmd(priv, BT_CMD_ROUTE_SCO_TO_HOST, &subcmd, 1);
226	if (ret)
227		BT_ERR("BT_CMD_ROUTE_SCO_TO_HOST command failed: %#x", ret);
228
229	return ret;
230}
231
232int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
233{
234	struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
235	int ret;
236
237	if (!card->support_pscan_win_report)
238		return 0;
239
240	ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
241				   &subcmd, 1);
242	if (ret)
243		BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
244
245	return ret;
246}
247EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
248
249int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
250{
251	int ret;
252	u8 param[2];
253
254	param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
255	param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
256
257	BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
258	       param[0], param[1]);
259
260	ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
261	if (ret)
262		BT_ERR("HSCFG command failed");
263
264	return ret;
265}
266EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
267
268int btmrvl_enable_ps(struct btmrvl_private *priv)
269{
270	int ret;
271	u8 param;
272
273	if (priv->btmrvl_dev.psmode)
274		param = BT_PS_ENABLE;
275	else
276		param = BT_PS_DISABLE;
277
278	ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
279	if (ret)
280		BT_ERR("PSMODE command failed");
281
282	return 0;
283}
284EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
285
286int btmrvl_enable_hs(struct btmrvl_private *priv)
287{
288	struct btmrvl_adapter *adapter = priv->adapter;
289	int ret;
290
291	ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
292	if (ret) {
293		BT_ERR("Host sleep enable command failed");
294		return ret;
295	}
296
297	ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
298					       adapter->hs_state ||
299					       priv->surprise_removed,
300					       WAIT_UNTIL_HS_STATE_CHANGED);
301	if (ret < 0 || priv->surprise_removed) {
302		BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
303		       ret, adapter->hs_state, adapter->ps_state,
304		       adapter->wakeup_tries);
305	} else if (!ret) {
306		BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
307		       adapter->ps_state, adapter->wakeup_tries);
308		ret = -ETIMEDOUT;
309	} else {
310		BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
311		       adapter->ps_state, adapter->wakeup_tries);
312		ret = 0;
313	}
314
315	return ret;
316}
317EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
318
319int btmrvl_prepare_command(struct btmrvl_private *priv)
320{
321	int ret = 0;
322
323	if (priv->btmrvl_dev.hscfgcmd) {
324		priv->btmrvl_dev.hscfgcmd = 0;
325		btmrvl_send_hscfg_cmd(priv);
326	}
327
328	if (priv->btmrvl_dev.pscmd) {
329		priv->btmrvl_dev.pscmd = 0;
330		btmrvl_enable_ps(priv);
331	}
332
333	if (priv->btmrvl_dev.hscmd) {
334		priv->btmrvl_dev.hscmd = 0;
335
336		if (priv->btmrvl_dev.hsmode) {
337			ret = btmrvl_enable_hs(priv);
338		} else {
339			ret = priv->hw_wakeup_firmware(priv);
340			priv->adapter->hs_state = HS_DEACTIVATED;
341			BT_DBG("BT: HS DEACTIVATED due to host activity!");
342		}
343	}
344
345	return ret;
346}
347
348static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
349{
350	int ret = 0;
351
352	if (!skb || !skb->data)
353		return -EINVAL;
354
355	if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
356		BT_ERR("Tx Error: Bad skb length %d : %d",
357						skb->len, BTM_UPLD_SIZE);
358		return -EINVAL;
359	}
360
361	skb_push(skb, BTM_HEADER_LEN);
362
363	/* header type: byte[3]
364	 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
365	 * header length: byte[2][1][0]
366	 */
367
368	skb->data[0] = (skb->len & 0x0000ff);
369	skb->data[1] = (skb->len & 0x00ff00) >> 8;
370	skb->data[2] = (skb->len & 0xff0000) >> 16;
371	skb->data[3] = hci_skb_pkt_type(skb);
372
373	if (priv->hw_host_to_card)
374		ret = priv->hw_host_to_card(priv, skb->data, skb->len);
375
376	return ret;
377}
378
379static void btmrvl_init_adapter(struct btmrvl_private *priv)
380{
381	int buf_size;
382
383	skb_queue_head_init(&priv->adapter->tx_queue);
384
385	priv->adapter->ps_state = PS_AWAKE;
386
387	buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
388	priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
389	if (!priv->adapter->hw_regs_buf) {
390		priv->adapter->hw_regs = NULL;
391		BT_ERR("Unable to allocate buffer for hw_regs.");
392	} else {
393		priv->adapter->hw_regs =
394			(u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
395					 BTSDIO_DMA_ALIGN);
396		BT_DBG("hw_regs_buf=%p hw_regs=%p",
397		       priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
398	}
399
400	init_waitqueue_head(&priv->adapter->cmd_wait_q);
401	init_waitqueue_head(&priv->adapter->event_hs_wait_q);
402}
403
404static void btmrvl_free_adapter(struct btmrvl_private *priv)
405{
406	skb_queue_purge(&priv->adapter->tx_queue);
407
408	kfree(priv->adapter->hw_regs_buf);
409	kfree(priv->adapter);
410
411	priv->adapter = NULL;
412}
413
414static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
415{
416	struct btmrvl_private *priv = hci_get_drvdata(hdev);
417
418	BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb), skb->len);
419
420	if (priv->adapter->is_suspending || priv->adapter->is_suspended) {
421		BT_ERR("%s: Device is suspending or suspended", __func__);
422		return -EBUSY;
423	}
424
425	switch (hci_skb_pkt_type(skb)) {
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	if (!priv->adapter->is_suspended)
442		wake_up_interruptible(&priv->main_thread.wait_q);
443
444	return 0;
445}
446
447static int btmrvl_flush(struct hci_dev *hdev)
448{
449	struct btmrvl_private *priv = hci_get_drvdata(hdev);
450
451	skb_queue_purge(&priv->adapter->tx_queue);
452
453	return 0;
454}
455
456static int btmrvl_close(struct hci_dev *hdev)
457{
458	struct btmrvl_private *priv = hci_get_drvdata(hdev);
459
460	skb_queue_purge(&priv->adapter->tx_queue);
461
462	return 0;
463}
464
465static int btmrvl_open(struct hci_dev *hdev)
466{
467	return 0;
468}
469
470static int btmrvl_download_cal_data(struct btmrvl_private *priv,
471				    u8 *data, int len)
472{
473	int ret;
474
475	data[0] = 0x00;
476	data[1] = 0x00;
477	data[2] = 0x00;
478	data[3] = len;
479
480	print_hex_dump_bytes("Calibration data: ",
481			     DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
482
483	ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
484				   BT_CAL_HDR_LEN + len);
485	if (ret)
486		BT_ERR("Failed to download calibration data");
487
488	return 0;
489}
490
491static int btmrvl_check_device_tree(struct btmrvl_private *priv)
492{
493	struct device_node *dt_node;
494	struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
495	u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
496	int ret = 0;
497	u16 gpio, gap;
498
499	if (card->plt_of_node) {
500		dt_node = card->plt_of_node;
501		ret = of_property_read_u16(dt_node, "marvell,wakeup-pin",
502					   &gpio);
503		if (ret)
504			gpio = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
505
506		ret = of_property_read_u16(dt_node, "marvell,wakeup-gap-ms",
507					   &gap);
508		if (ret)
509			gap = (u8)(priv->btmrvl_dev.gpio_gap & 0x00ff);
510
511		priv->btmrvl_dev.gpio_gap = (gpio << 8) + gap;
512
513		ret = of_property_read_u8_array(dt_node, "marvell,cal-data",
514						cal_data + BT_CAL_HDR_LEN,
515						BT_CAL_DATA_SIZE);
516		if (ret)
517			return ret;
518
519		BT_DBG("Use cal data from device tree");
520		ret = btmrvl_download_cal_data(priv, cal_data,
521					       BT_CAL_DATA_SIZE);
522		if (ret)
523			BT_ERR("Fail to download calibrate data");
524	}
525
526	return ret;
527}
528
529static int btmrvl_setup(struct hci_dev *hdev)
530{
531	struct btmrvl_private *priv = hci_get_drvdata(hdev);
532	int ret;
533
534	ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
535	if (ret)
536		return ret;
537
538	priv->btmrvl_dev.gpio_gap = 0xfffe;
539
540	btmrvl_check_device_tree(priv);
541
542	btmrvl_enable_sco_routing_to_host(priv);
543
544	btmrvl_pscan_window_reporting(priv, 0x01);
545
546	priv->btmrvl_dev.psmode = 1;
547	btmrvl_enable_ps(priv);
548
549	btmrvl_send_hscfg_cmd(priv);
550
551	return 0;
552}
553
554static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
555{
556	struct sk_buff *skb;
557	long ret;
558	u8 buf[8];
559
560	buf[0] = MRVL_VENDOR_PKT;
561	buf[1] = sizeof(bdaddr_t);
562	memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
563
564	skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
565			     HCI_INIT_TIMEOUT);
566	if (IS_ERR(skb)) {
567		ret = PTR_ERR(skb);
568		BT_ERR("%s: changing btmrvl device address failed (%ld)",
569		       hdev->name, ret);
570		return ret;
571	}
572	kfree_skb(skb);
573
574	return 0;
575}
576
577static bool btmrvl_wakeup(struct hci_dev *hdev)
578{
579	struct btmrvl_private *priv = hci_get_drvdata(hdev);
580	struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
581
582	return device_may_wakeup(&card->func->dev);
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 */
589static 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_entry_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		    priv->adapter->is_suspended)
648			continue;
649
650		skb = skb_dequeue(&adapter->tx_queue);
651		if (skb) {
652			if (btmrvl_tx_pkt(priv, skb))
653				priv->btmrvl_dev.hcidev->stat.err_tx++;
654			else
655				priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
656
657			kfree_skb(skb);
658		}
659	}
660
661	return 0;
662}
663
664int btmrvl_register_hdev(struct btmrvl_private *priv)
665{
666	struct hci_dev *hdev = NULL;
667	struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
668	int ret;
669
670	hdev = hci_alloc_dev();
671	if (!hdev) {
672		BT_ERR("Can not allocate HCI device");
673		goto err_hdev;
674	}
675
676	priv->btmrvl_dev.hcidev = hdev;
677	hci_set_drvdata(hdev, priv);
678
679	hdev->bus   = HCI_SDIO;
680	hdev->open  = btmrvl_open;
681	hdev->close = btmrvl_close;
682	hdev->flush = btmrvl_flush;
683	hdev->send  = btmrvl_send_frame;
684	hdev->setup = btmrvl_setup;
685	hdev->set_bdaddr = btmrvl_set_bdaddr;
686	hdev->wakeup = btmrvl_wakeup;
687	SET_HCIDEV_DEV(hdev, &card->func->dev);
688
689	hdev->dev_type = priv->btmrvl_dev.dev_type;
690
691	ret = hci_register_dev(hdev);
692	if (ret < 0) {
693		BT_ERR("Can not register HCI device");
694		goto err_hci_register_dev;
695	}
696
697#ifdef CONFIG_DEBUG_FS
698	btmrvl_debugfs_init(hdev);
699#endif
700
701	return 0;
702
703err_hci_register_dev:
704	hci_free_dev(hdev);
705
706err_hdev:
707	/* Stop the thread servicing the interrupts */
708	kthread_stop(priv->main_thread.task);
709
710	btmrvl_free_adapter(priv);
711	kfree(priv);
712
713	return -ENOMEM;
714}
715EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
716
717struct btmrvl_private *btmrvl_add_card(void *card)
718{
719	struct btmrvl_private *priv;
720
721	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
722	if (!priv) {
723		BT_ERR("Can not allocate priv");
724		goto err_priv;
725	}
726
727	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
728	if (!priv->adapter) {
729		BT_ERR("Allocate buffer for btmrvl_adapter failed!");
730		goto err_adapter;
731	}
732
733	btmrvl_init_adapter(priv);
734
735	BT_DBG("Starting kthread...");
736	priv->main_thread.priv = priv;
737	spin_lock_init(&priv->driver_lock);
738
739	init_waitqueue_head(&priv->main_thread.wait_q);
740	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
741				&priv->main_thread, "btmrvl_main_service");
742	if (IS_ERR(priv->main_thread.task))
743		goto err_thread;
744
745	priv->btmrvl_dev.card = card;
746	priv->btmrvl_dev.tx_dnld_rdy = true;
747
748	return priv;
749
750err_thread:
751	btmrvl_free_adapter(priv);
752
753err_adapter:
754	kfree(priv);
755
756err_priv:
757	return NULL;
758}
759EXPORT_SYMBOL_GPL(btmrvl_add_card);
760
761int btmrvl_remove_card(struct btmrvl_private *priv)
762{
763	struct hci_dev *hdev;
764
765	hdev = priv->btmrvl_dev.hcidev;
766
767	wake_up_interruptible(&priv->adapter->cmd_wait_q);
768	wake_up_interruptible(&priv->adapter->event_hs_wait_q);
769
770	kthread_stop(priv->main_thread.task);
771
772#ifdef CONFIG_DEBUG_FS
773	btmrvl_debugfs_remove(hdev);
774#endif
775
776	hci_unregister_dev(hdev);
777
778	hci_free_dev(hdev);
779
780	priv->btmrvl_dev.hcidev = NULL;
781
782	btmrvl_free_adapter(priv);
783
784	kfree(priv);
785
786	return 0;
787}
788EXPORT_SYMBOL_GPL(btmrvl_remove_card);
789
790MODULE_AUTHOR("Marvell International Ltd.");
791MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
792MODULE_VERSION(VERSION);
793MODULE_LICENSE("GPL v2");
794