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