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