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Staging: btmtk_usb: Removal of Unnecessary white spaces
[linux-2.6/btrfs-unstable.git] / drivers / staging / btmtk_usb / btmtk_usb.c
blob5dd8744464c09f8514e99112ba833f92bea3b3e6
1 /*
2 * MediaTek Bluetooth USB Driver
3 *
4 * Copyright (C) 2013, MediaTek co.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 * or on the worldwide web at
20 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32 #include <linux/completion.h>
33 #include <linux/firmware.h>
34 #include <linux/usb.h>
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #include "btmtk_usb.h"
39
40 #define VERSION "1.0.4"
41 #define MT7650_FIRMWARE "mt7650.bin"
42 #define MT7662_FIRMWARE "mt7662.bin"
43
44 static struct usb_driver btmtk_usb_driver;
45
46
47 static int btmtk_usb_load_rom_patch(struct btmtk_usb_data *);
48 static int btmtk_usb_load_fw(struct btmtk_usb_data *);
49
50 static void hex_dump(char *str, u8 *src_buf, u32 src_buf_len)
51 {
52 unsigned char *pt;
53 int x;
54
55 pt = src_buf;
56
57 BT_DBG("%s: %p, len = %d\n", str, src_buf, src_buf_len);
58
59 for (x = 0; x < src_buf_len; x++) {
60 if (x % 16 == 0)
61 BT_DBG("0x%04x : ", x);
62 BT_DBG("%02x ", ((unsigned char)pt[x]));
63 if (x % 16 == 15)
64 BT_DBG("\n");
65 }
66
67 BT_DBG("\n");
68 }
69
70 static int btmtk_usb_reset(struct usb_device *udev)
71 {
72 int ret;
73
74 BT_DBG("%s\n", __func__);
75
76 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01,
77 DEVICE_VENDOR_REQUEST_OUT, 0x01, 0x00,
78 NULL, 0x00, CONTROL_TIMEOUT_JIFFIES);
79
80 if (ret < 0) {
81 BT_ERR("%s error(%d)\n", __func__, ret);
82 return ret;
83 }
84
85 if (ret > 0)
86 ret = 0;
87
88 return ret;
89 }
90
91 static int btmtk_usb_io_read32(struct btmtk_usb_data *data, u32 reg, u32 *val)
92 {
93 u8 request = data->r_request;
94 struct usb_device *udev = data->udev;
95 int ret;
96
97 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), request,
98 DEVICE_VENDOR_REQUEST_IN, 0x0, reg, data->io_buf,
99 4, CONTROL_TIMEOUT_JIFFIES);
100
101 if (ret < 0) {
102 *val = 0xffffffff;
103 BT_ERR("%s error(%d), reg=%x, value=%x\n",
104 __func__, ret, reg, *val);
105 return ret;
106 }
107
108 memmove(val, data->io_buf, 4);
109
110 *val = le32_to_cpu(*val);
111
112 if (ret > 0)
113 ret = 0;
114
115 return ret;
116 }
117
118 static int btmtk_usb_io_write32(struct btmtk_usb_data *data, u32 reg, u32 val)
119 {
120 u16 value, index;
121 u8 request = data->w_request;
122 struct usb_device *udev = data->udev;
123 int ret;
124
125 index = (u16)reg;
126 value = val & 0x0000ffff;
127
128 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), request,
129 DEVICE_VENDOR_REQUEST_OUT, value, index,
130 NULL, 0, CONTROL_TIMEOUT_JIFFIES);
131
132 if (ret < 0) {
133 BT_ERR("%s error(%d), reg=%x, value=%x\n",
134 __func__, ret, reg, val);
135 return ret;
136 }
137
138 index = (u16)(reg + 2);
139 value = (val & 0xffff0000) >> 16;
140
141 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
142 request, DEVICE_VENDOR_REQUEST_OUT,
143 value, index, NULL, 0, CONTROL_TIMEOUT_JIFFIES);
144
145 if (ret < 0) {
146 BT_ERR("%s error(%d), reg=%x, value=%x\n",
147 __func__, ret, reg, val);
148 return ret;
149 }
150
151 if (ret > 0)
152 ret = 0;
153
154 return ret;
155 }
156
157 static int btmtk_usb_switch_iobase(struct btmtk_usb_data *data, int base)
158 {
159 int ret = 0;
160
161 switch (base) {
162 case SYSCTL:
163 data->w_request = 0x42;
164 data->r_request = 0x47;
165 break;
166 case WLAN:
167 data->w_request = 0x02;
168 data->r_request = 0x07;
169 break;
170
171 default:
172 return -EINVAL;
173 }
174
175 return ret;
176 }
177
178 static void btmtk_usb_cap_init(struct btmtk_usb_data *data)
179 {
180 const struct firmware *firmware;
181 struct usb_device *udev = data->udev;
182 int ret;
183
184 btmtk_usb_io_read32(data, 0x00, &data->chip_id);
185
186 BT_DBG("chip id = %x\n", data->chip_id);
187
188 if (is_mt7630(data) || is_mt7650(data)) {
189 data->need_load_fw = 1;
190 data->need_load_rom_patch = 0;
191 ret = request_firmware(&firmware, MT7650_FIRMWARE, &udev->dev);
192 if (ret < 0) {
193 if (ret == -ENOENT) {
194 BT_ERR("Firmware file \"%s\" not found\n",
195 MT7650_FIRMWARE);
196 } else {
197 BT_ERR("Firmware file \"%s\" request failed (err=%d)\n",
198 MT7650_FIRMWARE, ret);
199 }
200 } else {
201 BT_DBG("Firmware file \"%s\" Found\n",
202 MT7650_FIRMWARE);
203 /* load firmware here */
204 data->firmware = firmware;
205 btmtk_usb_load_fw(data);
206 }
207 release_firmware(firmware);
208 } else if (is_mt7632(data) || is_mt7662(data)) {
209 data->need_load_fw = 0;
210 data->need_load_rom_patch = 1;
211 data->rom_patch_offset = 0x90000;
212 ret = request_firmware(&firmware, MT7662_FIRMWARE, &udev->dev);
213 if (ret < 0) {
214 if (ret == -ENOENT) {
215 BT_ERR("Firmware file \"%s\" not found\n",
216 MT7662_FIRMWARE);
217 } else {
218 BT_ERR("Firmware file \"%s\" request failed (err=%d)\n",
219 MT7662_FIRMWARE, ret);
220 }
221 } else {
222 BT_DBG("Firmware file \"%s\" Found\n", MT7662_FIRMWARE);
223 /* load rom patch here */
224 data->firmware = firmware;
225 data->rom_patch_len = firmware->size;
226 btmtk_usb_load_rom_patch(data);
227 }
228 release_firmware(firmware);
229 } else {
230 BT_ERR("unknow chip(%x)\n", data->chip_id);
231 }
232 }
233
234 static u16 checksume16(u8 *pData, int len)
235 {
236 int sum = 0;
237
238 while (len > 1) {
239 sum += *((u16 *)pData);
240
241 pData = pData + 2;
242
243 if (sum & 0x80000000)
244 sum = (sum & 0xFFFF) + (sum >> 16);
245
246 len -= 2;
247 }
248
249 if (len)
250 sum += *((u8 *)pData);
251
252 while (sum >> 16)
253 sum = (sum & 0xFFFF) + (sum >> 16);
254
255 return ~sum;
256 }
257
258 static int btmtk_usb_chk_crc(struct btmtk_usb_data *data, u32 checksum_len)
259 {
260 int ret = 0;
261 struct usb_device *udev = data->udev;
262
263 BT_DBG("%s\n", __func__);
264
265 memmove(data->io_buf, &data->rom_patch_offset, 4);
266 memmove(&data->io_buf[4], &checksum_len, 4);
267
268 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x1,
269 DEVICE_VENDOR_REQUEST_IN, 0x20, 0x00, data->io_buf,
270 8, CONTROL_TIMEOUT_JIFFIES);
271
272 if (ret < 0)
273 BT_ERR("%s error(%d)\n", __func__, ret);
274
275 return ret;
276 }
277
278 static u16 btmtk_usb_get_crc(struct btmtk_usb_data *data)
279 {
280 int ret = 0;
281 struct usb_device *udev = data->udev;
282 u16 crc, count = 0;
283
284 BT_DBG("%s\n", __func__);
285
286 while (1) {
287 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
288 0x01, DEVICE_VENDOR_REQUEST_IN,
289 0x21, 0x00, data->io_buf, 2,
290 CONTROL_TIMEOUT_JIFFIES);
291
292 if (ret < 0) {
293 crc = 0xFFFF;
294 BT_ERR("%s error(%d)\n", __func__, ret);
295 }
296
297 memmove(&crc, data->io_buf, 2);
298
299 crc = le16_to_cpu(crc);
300
301 if (crc != 0xFFFF)
302 break;
303
304 mdelay(100);
305
306 if (count++ > 100) {
307 BT_ERR("Query CRC over %d times\n", count);
308 break;
309 }
310 }
311
312 return crc;
313 }
314
315 static int btmtk_usb_reset_wmt(struct btmtk_usb_data *data)
316 {
317 int ret = 0;
318
319 /* reset command */
320 u8 cmd[8] = {0x6F, 0xFC, 0x05, 0x01, 0x07, 0x01, 0x00, 0x04};
321
322 memmove(data->io_buf, cmd, 8);
323
324 BT_DBG("%s\n", __func__);
325
326 ret = usb_control_msg(data->udev, usb_sndctrlpipe(data->udev, 0), 0x01,
327 DEVICE_CLASS_REQUEST_OUT, 0x12, 0x00,
328 data->io_buf, 8, CONTROL_TIMEOUT_JIFFIES);
329
330 if (ret)
331 BT_ERR("%s:(%d)\n", __func__, ret);
332
333 return ret;
334 }
335
336 static void load_rom_patch_complete(struct urb *urb)
337 {
338
339 struct completion *sent_to_mcu_done = (struct completion *)urb->context;
340
341 complete(sent_to_mcu_done);
342 }
343
344 static int btmtk_usb_load_rom_patch(struct btmtk_usb_data *data)
345 {
346 u32 loop = 0;
347 u32 value;
348 s32 sent_len;
349 int ret = 0, total_checksum = 0;
350 struct urb *urb;
351 u32 patch_len = 0;
352 u32 cur_len = 0;
353 dma_addr_t data_dma;
354 struct completion sent_to_mcu_done;
355 int first_block = 1;
356 unsigned char phase;
357 void *buf;
358 char *pos;
359 unsigned int pipe;
360 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
361
362 if (!data->firmware) {
363 BT_ERR("%s:please assign a rom patch\n", __func__);
364 return -1;
365 }
366
367 load_patch_protect:
368 btmtk_usb_switch_iobase(data, WLAN);
369 btmtk_usb_io_read32(data, SEMAPHORE_03, &value);
370 loop++;
371
372 if (((value & 0x01) == 0x00) && (loop < 600)) {
373 mdelay(1);
374 goto load_patch_protect;
375 }
376
377 btmtk_usb_io_write32(data, 0x1004, 0x2c);
378
379 btmtk_usb_switch_iobase(data, SYSCTL);
380
381 btmtk_usb_io_write32(data, 0x1c, 0x30);
382
383 /* Enable USB_DMA_CFG */
384 btmtk_usb_io_write32(data, 0x9018, 0x00c00020);
385
386 btmtk_usb_switch_iobase(data, WLAN);
387
388 /* check ROM patch if upgrade */
389 btmtk_usb_io_read32(data, COM_REG0, &value);
390
391 if ((value & 0x02) == 0x02)
392 goto error0;
393
394 urb = usb_alloc_urb(0, GFP_ATOMIC);
395
396 if (!urb) {
397 ret = -ENOMEM;
398 goto error0;
399 }
400
401 buf = usb_alloc_coherent(data->udev, UPLOAD_PATCH_UNIT,
402 GFP_ATOMIC, &data_dma);
403
404 if (!buf) {
405 ret = -ENOMEM;
406 goto error1;
407 }
408
409 pos = buf;
410 BT_DBG("loading rom patch");
411
412 init_completion(&sent_to_mcu_done);
413
414 cur_len = 0x00;
415 patch_len = data->rom_patch_len - PATCH_INFO_SIZE;
416
417 /* loading rom patch */
418 while (1) {
419 s32 sent_len_max = UPLOAD_PATCH_UNIT - PATCH_HEADER_SIZE;
420 sent_len = (patch_len - cur_len) >= sent_len_max ?
421 sent_len_max : (patch_len - cur_len);
422
423 BT_DBG("patch_len = %d\n", patch_len);
424 BT_DBG("cur_len = %d\n", cur_len);
425 BT_DBG("sent_len = %d\n", sent_len);
426
427 if (sent_len <= 0)
428 break;
429
430 if (first_block == 1) {
431 if (sent_len < sent_len_max)
432 phase = PATCH_PHASE3;
433 else
434 phase = PATCH_PHASE1;
435 first_block = 0;
436 } else if (sent_len == sent_len_max) {
437 phase = PATCH_PHASE2;
438 } else {
439 phase = PATCH_PHASE3;
440 }
441
442 /* prepare HCI header */
443 pos[0] = 0x6F;
444 pos[1] = 0xFC;
445 pos[2] = (sent_len + 5) & 0xFF;
446 pos[3] = ((sent_len + 5) >> 8) & 0xFF;
447
448 /* prepare WMT header */
449 pos[4] = 0x01;
450 pos[5] = 0x01;
451 pos[6] = (sent_len + 1) & 0xFF;
452 pos[7] = ((sent_len + 1) >> 8) & 0xFF;
453
454 pos[8] = phase;
455
456 memcpy(&pos[9],
457 data->firmware->data + PATCH_INFO_SIZE + cur_len,
458 sent_len);
459
460 BT_DBG("sent_len + PATCH_HEADER_SIZE = %d, phase = %d\n",
461 sent_len + PATCH_HEADER_SIZE, phase);
462
463 usb_fill_bulk_urb(urb,
464 data->udev,
465 pipe,
466 buf,
467 sent_len + PATCH_HEADER_SIZE,
468 load_rom_patch_complete,
469 &sent_to_mcu_done);
470
471 urb->transfer_dma = data_dma;
472 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
473
474 ret = usb_submit_urb(urb, GFP_ATOMIC);
475
476 if (ret)
477 goto error2;
478
479 if (!wait_for_completion_timeout(&sent_to_mcu_done,
480 msecs_to_jiffies(1000))) {
481 usb_kill_urb(urb);
482 BT_ERR("upload rom_patch timeout\n");
483 goto error2;
484 }
485
486 BT_DBG(".");
487
488 mdelay(200);
489
490 cur_len += sent_len;
491
492 }
493
494 total_checksum = checksume16(
495 (u8 *)data->firmware->data + PATCH_INFO_SIZE,
496 patch_len);
497
498 BT_DBG("Send checksum req..\n");
499
500 btmtk_usb_chk_crc(data, patch_len);
501
502 mdelay(20);
503
504 if (total_checksum != btmtk_usb_get_crc(data)) {
505 BT_ERR("checksum fail!, local(0x%x) <> fw(0x%x)\n",
506 total_checksum, btmtk_usb_get_crc(data));
507 ret = -1;
508 goto error2;
509 }
510
511 mdelay(20);
512
513 ret = btmtk_usb_reset_wmt(data);
514
515 mdelay(20);
516
517 error2:
518 usb_free_coherent(data->udev, UPLOAD_PATCH_UNIT, buf, data_dma);
519 error1:
520 usb_free_urb(urb);
521 error0:
522 btmtk_usb_io_write32(data, SEMAPHORE_03, 0x1);
523 return ret;
524 }
525
526
527 static int load_fw_iv(struct btmtk_usb_data *data)
528 {
529 int ret;
530 struct usb_device *udev = data->udev;
531 char *buf = kmalloc(64, GFP_ATOMIC);
532
533 memmove(buf, data->firmware->data + 32, 64);
534
535 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01,
536 DEVICE_VENDOR_REQUEST_OUT, 0x12, 0x0, buf, 64,
537 CONTROL_TIMEOUT_JIFFIES);
538
539 if (ret < 0) {
540 BT_ERR("%s error(%d) step4\n", __func__, ret);
541 kfree(buf);
542 return ret;
543 }
544
545 if (ret > 0)
546 ret = 0;
547
548 kfree(buf);
549
550 return ret;
551 }
552
553 static void load_fw_complete(struct urb *urb)
554 {
555
556 struct completion *sent_to_mcu_done = (struct completion *)urb->context;
557
558 complete(sent_to_mcu_done);
559 }
560
561 static int btmtk_usb_load_fw(struct btmtk_usb_data *data)
562 {
563 struct usb_device *udev = data->udev;
564 struct urb *urb;
565 void *buf;
566 u32 cur_len = 0;
567 u32 packet_header = 0;
568 u32 value;
569 u32 ilm_len = 0, dlm_len = 0;
570 u16 fw_ver, build_ver;
571 u32 loop = 0;
572 dma_addr_t data_dma;
573 int ret = 0, sent_len;
574 struct completion sent_to_mcu_done;
575 unsigned int pipe;
576 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
577
578 if (!data->firmware) {
579 BT_ERR("%s:please assign a fw\n", __func__);
580 return -1;
581 }
582
583 BT_DBG("bulk_tx_ep = %x\n", data->bulk_tx_ep->bEndpointAddress);
584
585 loadfw_protect:
586 btmtk_usb_switch_iobase(data, WLAN);
587 btmtk_usb_io_read32(data, SEMAPHORE_00, &value);
588 loop++;
589
590 if (((value & 0x1) == 0) && (loop < 10000))
591 goto loadfw_protect;
592
593 /* check MCU if ready */
594 btmtk_usb_io_read32(data, COM_REG0, &value);
595
596 if ((value & 0x01) == 0x01)
597 goto error0;
598
599 /* Enable MPDMA TX and EP2 load FW mode */
600 btmtk_usb_io_write32(data, 0x238, 0x1c000000);
601
602 btmtk_usb_reset(udev);
603 mdelay(100);
604
605 ilm_len = (*(data->firmware->data + 3) << 24)
606 | (*(data->firmware->data + 2) << 16)
607 | (*(data->firmware->data + 1) << 8)
608 | (*data->firmware->data);
609
610 dlm_len = (*(data->firmware->data + 7) << 24)
611 | (*(data->firmware->data + 6) << 16)
612 | (*(data->firmware->data + 5) << 8)
613 | (*(data->firmware->data + 4));
614
615 fw_ver = (*(data->firmware->data + 11) << 8) |
616 (*(data->firmware->data + 10));
617
618 build_ver = (*(data->firmware->data + 9) << 8) |
619 (*(data->firmware->data + 8));
620
621 BT_DBG("fw version:%d.%d.%02d ",
622 (fw_ver & 0xf000) >> 8,
623 (fw_ver & 0x0f00) >> 8,
624 (fw_ver & 0x00ff));
625
626 BT_DBG("build:%x\n", build_ver);
627
628 BT_DBG("build Time =");
629
630 for (loop = 0; loop < 16; loop++)
631 BT_DBG("%c", *(data->firmware->data + 16 + loop));
632
633 BT_DBG("\n");
634
635 BT_DBG("ILM length = %d(bytes)\n", ilm_len);
636 BT_DBG("DLM length = %d(bytes)\n", dlm_len);
637
638 btmtk_usb_switch_iobase(data, SYSCTL);
639
640 /* U2M_PDMA rx_ring_base_ptr */
641 btmtk_usb_io_write32(data, 0x790, 0x400230);
642
643 /* U2M_PDMA rx_ring_max_cnt */
644 btmtk_usb_io_write32(data, 0x794, 0x1);
645
646 /* U2M_PDMA cpu_idx */
647 btmtk_usb_io_write32(data, 0x798, 0x1);
648
649 /* U2M_PDMA enable */
650 btmtk_usb_io_write32(data, 0x704, 0x44);
651
652 urb = usb_alloc_urb(0, GFP_ATOMIC);
653
654 if (!urb) {
655 ret = -ENOMEM;
656 goto error1;
657 }
658
659 buf = usb_alloc_coherent(udev, 14592, GFP_ATOMIC, &data_dma);
660
661 if (!buf) {
662 ret = -ENOMEM;
663 goto error2;
664 }
665
666 BT_DBG("loading fw");
667
668 init_completion(&sent_to_mcu_done);
669
670 btmtk_usb_switch_iobase(data, SYSCTL);
671
672 cur_len = 0x40;
673
674 /* Loading ILM */
675 while (1) {
676 sent_len = (ilm_len - cur_len) >= 14336 ? 14336 :
677 (ilm_len - cur_len);
678
679 if (sent_len > 0) {
680 packet_header &= ~(0xffffffff);
681 packet_header |= (sent_len << 16);
682 packet_header = cpu_to_le32(packet_header);
683
684 memmove(buf, &packet_header, 4);
685 memmove(buf + 4, data->firmware->data + 32 + cur_len,
686 sent_len);
687
688 /* U2M_PDMA descriptor */
689 btmtk_usb_io_write32(data, 0x230, cur_len);
690
691 while ((sent_len % 4) != 0)
692 sent_len++;
693
694 /* U2M_PDMA length */
695 btmtk_usb_io_write32(data, 0x234, sent_len << 16);
696
697 usb_fill_bulk_urb(urb,
698 udev,
699 pipe,
700 buf,
701 sent_len + 4,
702 load_fw_complete,
703 &sent_to_mcu_done);
704
705 urb->transfer_dma = data_dma;
706 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
707
708 ret = usb_submit_urb(urb, GFP_ATOMIC);
709
710 if (ret)
711 goto error3;
712
713 if (!wait_for_completion_timeout(&sent_to_mcu_done,
714 msecs_to_jiffies(1000))) {
715 usb_kill_urb(urb);
716 BT_ERR("upload ilm fw timeout\n");
717 goto error3;
718 }
719
720 BT_DBG(".");
721
722 mdelay(200);
723
724 cur_len += sent_len;
725 } else {
726 break;
727 }
728 }
729
730 init_completion(&sent_to_mcu_done);
731 cur_len = 0x00;
732
733 /* Loading DLM */
734 while (1) {
735 sent_len = (dlm_len - cur_len) >= 14336 ? 14336 :
736 (dlm_len - cur_len);
737
738 if (sent_len <= 0)
739 break;
740
741 packet_header &= ~(0xffffffff);
742 packet_header |= (sent_len << 16);
743 packet_header = cpu_to_le32(packet_header);
744
745 memmove(buf, &packet_header, 4);
746 memmove(buf + 4,
747 data->firmware->data + 32 + ilm_len + cur_len,
748 sent_len);
749
750 /* U2M_PDMA descriptor */
751 btmtk_usb_io_write32(data, 0x230, 0x80000 + cur_len);
752
753 while ((sent_len % 4) != 0) {
754 BT_DBG("sent_len is not divided by 4\n");
755 sent_len++;
756 }
757
758 /* U2M_PDMA length */
759 btmtk_usb_io_write32(data, 0x234, sent_len << 16);
760
761 usb_fill_bulk_urb(urb,
762 udev,
763 pipe,
764 buf,
765 sent_len + 4,
766 load_fw_complete,
767 &sent_to_mcu_done);
768
769 urb->transfer_dma = data_dma;
770 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
771
772 ret = usb_submit_urb(urb, GFP_ATOMIC);
773
774 if (ret)
775 goto error3;
776
777 if (!wait_for_completion_timeout(&sent_to_mcu_done,
778 msecs_to_jiffies(1000))) {
779 usb_kill_urb(urb);
780 BT_ERR("upload dlm fw timeout\n");
781 goto error3;
782 }
783
784 BT_DBG(".");
785
786 mdelay(500);
787
788 cur_len += sent_len;
789
790 }
791
792 /* upload 64bytes interrupt vector */
793 ret = load_fw_iv(data);
794 mdelay(100);
795
796 btmtk_usb_switch_iobase(data, WLAN);
797
798 /* check MCU if ready */
799 loop = 0;
800
801 do {
802 btmtk_usb_io_read32(data, COM_REG0, &value);
803
804 if (value == 0x01)
805 break;
806
807 mdelay(10);
808 loop++;
809 } while (loop <= 100);
810
811 if (loop > 1000) {
812 BT_ERR("wait for 100 times\n");
813 ret = -ENODEV;
814 }
815
816 error3:
817 usb_free_coherent(udev, 14592, buf, data_dma);
818 error2:
819 usb_free_urb(urb);
820 error1:
821 /* Disbale load fw mode */
822 btmtk_usb_io_read32(data, 0x238, &value);
823 value = value & ~(0x10000000);
824 btmtk_usb_io_write32(data, 0x238, value);
825 error0:
826 btmtk_usb_io_write32(data, SEMAPHORE_00, 0x1);
827 return ret;
828 }
829
830 static int inc_tx(struct btmtk_usb_data *data)
831 {
832 unsigned long flags;
833 int rv;
834
835 spin_lock_irqsave(&data->txlock, flags);
836 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
837 if (!rv)
838 data->tx_in_flight++;
839 spin_unlock_irqrestore(&data->txlock, flags);
840
841 return rv;
842 }
843
844 static void btmtk_usb_intr_complete(struct urb *urb)
845 {
846 struct hci_dev *hdev = urb->context;
847 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
848 int err;
849
850 BT_DBG("%s: %s urb %p status %d count %d\n", __func__, hdev->name,
851 urb, urb->status, urb->actual_length);
852
853 if (!test_bit(HCI_RUNNING, &hdev->flags))
854 return;
855
856 if (urb->status == 0) {
857 hdev->stat.byte_rx += urb->actual_length;
858
859 hex_dump("hci event", urb->transfer_buffer, urb->actual_length);
860
861 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
862 urb->transfer_buffer,
863 urb->actual_length) < 0) {
864 BT_ERR("%s corrupted event packet", hdev->name);
865 hdev->stat.err_rx++;
866 }
867 }
868
869 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
870 return;
871
872 usb_mark_last_busy(data->udev);
873 usb_anchor_urb(urb, &data->intr_anchor);
874
875 err = usb_submit_urb(urb, GFP_ATOMIC);
876
877 if (err < 0) {
878 /* -EPERM: urb is being killed;
879 * -ENODEV: device got disconnected */
880 if (err != -EPERM && err != -ENODEV)
881 BT_ERR("%s urb %p failed to resubmit (%d)",
882 hdev->name, urb, -err);
883 usb_unanchor_urb(urb);
884 }
885 }
886
887 static int btmtk_usb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
888 {
889 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
890 struct urb *urb;
891 unsigned char *buf;
892 unsigned int pipe;
893 int err, size;
894
895 BT_DBG("%s\n", __func__);
896
897 if (!data->intr_ep)
898 return -ENODEV;
899
900 urb = usb_alloc_urb(0, mem_flags);
901 if (!urb)
902 return -ENOMEM;
903
904 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
905
906 buf = kmalloc(size, mem_flags);
907 if (!buf) {
908 usb_free_urb(urb);
909 return -ENOMEM;
910 }
911
912 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
913
914 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
915 btmtk_usb_intr_complete, hdev,
916 data->intr_ep->bInterval);
917
918 urb->transfer_flags |= URB_FREE_BUFFER;
919
920 usb_anchor_urb(urb, &data->intr_anchor);
921
922 err = usb_submit_urb(urb, mem_flags);
923 if (err < 0) {
924 if (err != -EPERM && err != -ENODEV)
925 BT_ERR("%s urb %p submission failed (%d)",
926 hdev->name, urb, -err);
927 usb_unanchor_urb(urb);
928 }
929
930 usb_free_urb(urb);
931
932 return err;
933
934 }
935
936 static void btmtk_usb_bulk_in_complete(struct urb *urb)
937 {
938 struct hci_dev *hdev = urb->context;
939 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
940 int err;
941
942 BT_DBG("%s:%s urb %p status %d count %d", __func__, hdev->name,
943 urb, urb->status, urb->actual_length);
944
945 if (!test_bit(HCI_RUNNING, &hdev->flags))
946 return;
947
948 if (urb->status == 0) {
949 hdev->stat.byte_rx += urb->actual_length;
950
951 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
952 urb->transfer_buffer,
953 urb->actual_length) < 0) {
954 BT_ERR("%s corrupted ACL packet", hdev->name);
955 hdev->stat.err_rx++;
956 }
957 }
958
959 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
960 return;
961
962 usb_anchor_urb(urb, &data->bulk_anchor);
963 usb_mark_last_busy(data->udev);
964
965 err = usb_submit_urb(urb, GFP_ATOMIC);
966 if (err < 0) {
967 /* -EPERM: urb is being killed;
968 * -ENODEV: device got disconnected */
969 if (err != -EPERM && err != -ENODEV)
970 BT_ERR("%s urb %p failed to resubmit (%d)",
971 hdev->name, urb, -err);
972 usb_unanchor_urb(urb);
973 }
974 }
975
976 static int btmtk_usb_submit_bulk_in_urb(struct hci_dev *hdev, gfp_t mem_flags)
977 {
978 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
979 struct urb *urb;
980 unsigned char *buf;
981 unsigned int pipe;
982 int err, size = HCI_MAX_FRAME_SIZE;
983
984 BT_DBG("%s:%s\n", __func__, hdev->name);
985
986 if (!data->bulk_rx_ep)
987 return -ENODEV;
988
989 urb = usb_alloc_urb(0, mem_flags);
990 if (!urb)
991 return -ENOMEM;
992
993 buf = kmalloc(size, mem_flags);
994 if (!buf) {
995 usb_free_urb(urb);
996 return -ENOMEM;
997 }
998
999 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1000
1001 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1002 btmtk_usb_bulk_in_complete, hdev);
1003
1004 urb->transfer_flags |= URB_FREE_BUFFER;
1005
1006 usb_mark_last_busy(data->udev);
1007 usb_anchor_urb(urb, &data->bulk_anchor);
1008
1009 err = usb_submit_urb(urb, mem_flags);
1010 if (err < 0) {
1011 if (err != -EPERM && err != -ENODEV)
1012 BT_ERR("%s urb %p submission failed (%d)",
1013 hdev->name, urb, -err);
1014 usb_unanchor_urb(urb);
1015 }
1016
1017 usb_free_urb(urb);
1018
1019 return err;
1020 }
1021
1022 static void btmtk_usb_isoc_in_complete(struct urb *urb)
1023
1024 {
1025 struct hci_dev *hdev = urb->context;
1026 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1027 int i, err;
1028
1029 BT_DBG("%s: %s urb %p status %d count %d", __func__, hdev->name,
1030 urb, urb->status, urb->actual_length);
1031
1032 if (!test_bit(HCI_RUNNING, &hdev->flags))
1033 return;
1034
1035 if (urb->status == 0) {
1036 for (i = 0; i < urb->number_of_packets; i++) {
1037 unsigned int offset = urb->iso_frame_desc[i].offset;
1038 unsigned int length;
1039 length = urb->iso_frame_desc[i].actual_length;
1040
1041 if (urb->iso_frame_desc[i].status)
1042 continue;
1043
1044 hdev->stat.byte_rx += length;
1045
1046 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
1047 urb->transfer_buffer + offset,
1048 length) < 0) {
1049 BT_ERR("%s corrupted SCO packet", hdev->name);
1050 hdev->stat.err_rx++;
1051 }
1052 }
1053 }
1054
1055 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1056 return;
1057
1058 usb_anchor_urb(urb, &data->isoc_anchor);
1059
1060 err = usb_submit_urb(urb, GFP_ATOMIC);
1061 if (err < 0) {
1062 /* -EPERM: urb is being killed;
1063 * -ENODEV: device got disconnected */
1064 if (err != -EPERM && err != -ENODEV)
1065 BT_ERR("%s urb %p failed to resubmit (%d)",
1066 hdev->name, urb, -err);
1067 usb_unanchor_urb(urb);
1068 }
1069 }
1070
1071 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1072 {
1073 int i, offset = 0;
1074
1075 BT_DBG("len %d mtu %d", len, mtu);
1076
1077 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1078 i++, offset += mtu, len -= mtu) {
1079 urb->iso_frame_desc[i].offset = offset;
1080 urb->iso_frame_desc[i].length = mtu;
1081 }
1082
1083 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1084 urb->iso_frame_desc[i].offset = offset;
1085 urb->iso_frame_desc[i].length = len;
1086 i++;
1087 }
1088
1089 urb->number_of_packets = i;
1090 }
1091
1092 static int btmtk_usb_submit_isoc_in_urb(struct hci_dev *hdev, gfp_t mem_flags)
1093 {
1094 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1095 struct urb *urb;
1096 unsigned char *buf;
1097 unsigned int pipe;
1098 int err, size;
1099
1100 BT_DBG("%s\n", __func__);
1101
1102 if (!data->isoc_rx_ep)
1103 return -ENODEV;
1104
1105 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1106 if (!urb)
1107 return -ENOMEM;
1108
1109 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1110 BTUSB_MAX_ISOC_FRAMES;
1111
1112 buf = kmalloc(size, mem_flags);
1113 if (!buf) {
1114 usb_free_urb(urb);
1115 return -ENOMEM;
1116 }
1117
1118 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1119
1120 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1121 btmtk_usb_isoc_in_complete, hdev,
1122 data->isoc_rx_ep->bInterval);
1123
1124 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1125
1126 __fill_isoc_descriptor(urb, size,
1127 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1128
1129 usb_anchor_urb(urb, &data->isoc_anchor);
1130
1131 err = usb_submit_urb(urb, mem_flags);
1132 if (err < 0) {
1133 if (err != -EPERM && err != -ENODEV)
1134 BT_ERR("%s urb %p submission failed (%d)",
1135 hdev->name, urb, -err);
1136 usb_unanchor_urb(urb);
1137 }
1138
1139 usb_free_urb(urb);
1140
1141 return err;
1142 }
1143
1144 static int btmtk_usb_open(struct hci_dev *hdev)
1145 {
1146 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1147 int err;
1148
1149 BT_DBG("%s\n", __func__);
1150
1151 err = usb_autopm_get_interface(data->intf);
1152 if (err < 0)
1153 return err;
1154
1155 data->intf->needs_remote_wakeup = 1;
1156
1157 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
1158 goto done;
1159
1160 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1161 goto done;
1162
1163 err = btmtk_usb_submit_intr_urb(hdev, GFP_KERNEL);
1164 if (err < 0)
1165 goto failed;
1166
1167 err = btmtk_usb_submit_bulk_in_urb(hdev, GFP_KERNEL);
1168 if (err < 0) {
1169 usb_kill_anchored_urbs(&data->intr_anchor);
1170 goto failed;
1171 }
1172
1173 set_bit(BTUSB_BULK_RUNNING, &data->flags);
1174 btmtk_usb_submit_bulk_in_urb(hdev, GFP_KERNEL);
1175
1176 done:
1177 usb_autopm_put_interface(data->intf);
1178 return 0;
1179
1180 failed:
1181 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1182 clear_bit(HCI_RUNNING, &hdev->flags);
1183 usb_autopm_put_interface(data->intf);
1184 return err;
1185 }
1186
1187 static void btmtk_usb_stop_traffic(struct btmtk_usb_data *data)
1188 {
1189 BT_DBG("%s\n", __func__);
1190
1191 usb_kill_anchored_urbs(&data->intr_anchor);
1192 usb_kill_anchored_urbs(&data->bulk_anchor);
1193 usb_kill_anchored_urbs(&data->isoc_anchor);
1194 }
1195
1196 static int btmtk_usb_close(struct hci_dev *hdev)
1197 {
1198 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1199 int err;
1200
1201 BT_DBG("%s\n", __func__);
1202
1203 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
1204 return 0;
1205
1206 cancel_work_sync(&data->work);
1207 cancel_work_sync(&data->waker);
1208
1209 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1210 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1211 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1212
1213 btmtk_usb_stop_traffic(data);
1214
1215 err = usb_autopm_get_interface(data->intf);
1216 if (err < 0)
1217 goto failed;
1218
1219 data->intf->needs_remote_wakeup = 0;
1220 usb_autopm_put_interface(data->intf);
1221
1222 failed:
1223 usb_scuttle_anchored_urbs(&data->deferred);
1224 return 0;
1225 }
1226
1227 static int btmtk_usb_flush(struct hci_dev *hdev)
1228 {
1229 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1230
1231 BT_DBG("%s\n", __func__);
1232
1233 usb_kill_anchored_urbs(&data->tx_anchor);
1234
1235 return 0;
1236 }
1237
1238 static void btmtk_usb_tx_complete(struct urb *urb)
1239 {
1240 struct sk_buff *skb = urb->context;
1241 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1242 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1243
1244 BT_DBG("%s: %s urb %p status %d count %d\n", __func__, hdev->name,
1245 urb, urb->status, urb->actual_length);
1246
1247 if (!test_bit(HCI_RUNNING, &hdev->flags))
1248 goto done;
1249
1250 if (!urb->status)
1251 hdev->stat.byte_tx += urb->transfer_buffer_length;
1252 else
1253 hdev->stat.err_tx++;
1254
1255 done:
1256 spin_lock(&data->txlock);
1257 data->tx_in_flight--;
1258 spin_unlock(&data->txlock);
1259
1260 kfree(urb->setup_packet);
1261
1262 kfree_skb(skb);
1263 }
1264
1265 static void btmtk_usb_isoc_tx_complete(struct urb *urb)
1266 {
1267 struct sk_buff *skb = urb->context;
1268 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
1269
1270 BT_DBG("%s: %s urb %p status %d count %d", __func__, hdev->name,
1271 urb, urb->status, urb->actual_length);
1272
1273 if (!test_bit(HCI_RUNNING, &hdev->flags))
1274 goto done;
1275
1276 if (!urb->status)
1277 hdev->stat.byte_tx += urb->transfer_buffer_length;
1278 else
1279 hdev->stat.err_tx++;
1280
1281 done:
1282 kfree(urb->setup_packet);
1283
1284 kfree_skb(skb);
1285 }
1286
1287 static int btmtk_usb_send_frame(struct sk_buff *skb)
1288 {
1289 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1290 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1291 struct usb_ctrlrequest *dr;
1292 struct urb *urb;
1293 unsigned int pipe;
1294 int err;
1295
1296 BT_DBG("%s\n", __func__);
1297
1298 if (!test_bit(HCI_RUNNING, &hdev->flags))
1299 return -EBUSY;
1300
1301 switch (bt_cb(skb)->pkt_type) {
1302 case HCI_COMMAND_PKT:
1303 urb = usb_alloc_urb(0, GFP_ATOMIC);
1304 if (!urb)
1305 return -ENOMEM;
1306
1307 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
1308 if (!dr) {
1309 usb_free_urb(urb);
1310 return -ENOMEM;
1311 }
1312
1313 dr->bRequestType = data->cmdreq_type;
1314 dr->bRequest = 0;
1315 dr->wIndex = 0;
1316 dr->wValue = 0;
1317 dr->wLength = __cpu_to_le16(skb->len);
1318
1319 pipe = usb_sndctrlpipe(data->udev, 0x00);
1320
1321 if (test_bit(HCI_RUNNING, &hdev->flags)) {
1322 u16 op_code;
1323 memcpy(&op_code, skb->data, 2);
1324 BT_DBG("ogf = %x\n", (op_code & 0xfc00) >> 10);
1325 BT_DBG("ocf = %x\n", op_code & 0x03ff);
1326 hex_dump("hci command", skb->data, skb->len);
1327
1328 }
1329
1330 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
1331 skb->data, skb->len,
1332 btmtk_usb_tx_complete, skb);
1333
1334 hdev->stat.cmd_tx++;
1335 break;
1336
1337 case HCI_ACLDATA_PKT:
1338 if (!data->bulk_tx_ep)
1339 return -ENODEV;
1340
1341 urb = usb_alloc_urb(0, GFP_ATOMIC);
1342 if (!urb)
1343 return -ENOMEM;
1344
1345 pipe = usb_sndbulkpipe(data->udev,
1346 data->bulk_tx_ep->bEndpointAddress);
1347
1348 usb_fill_bulk_urb(urb, data->udev, pipe, skb->data,
1349 skb->len, btmtk_usb_tx_complete, skb);
1350
1351 hdev->stat.acl_tx++;
1352 BT_DBG("HCI_ACLDATA_PKT:\n");
1353 break;
1354
1355 case HCI_SCODATA_PKT:
1356 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
1357 return -ENODEV;
1358
1359 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
1360 if (!urb)
1361 return -ENOMEM;
1362
1363 pipe = usb_sndisocpipe(data->udev,
1364 data->isoc_tx_ep->bEndpointAddress);
1365
1366 usb_fill_int_urb(urb, data->udev, pipe,
1367 skb->data, skb->len, btmtk_usb_isoc_tx_complete,
1368 skb, data->isoc_tx_ep->bInterval);
1369
1370 urb->transfer_flags = URB_ISO_ASAP;
1371
1372 __fill_isoc_descriptor(urb, skb->len,
1373 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1374
1375 hdev->stat.sco_tx++;
1376 BT_DBG("HCI_SCODATA_PKT:\n");
1377 goto skip_waking;
1378
1379 default:
1380 return -EILSEQ;
1381 }
1382
1383 err = inc_tx(data);
1384
1385 if (err) {
1386 usb_anchor_urb(urb, &data->deferred);
1387 schedule_work(&data->waker);
1388 err = 0;
1389 goto done;
1390 }
1391
1392 skip_waking:
1393 usb_anchor_urb(urb, &data->tx_anchor);
1394
1395 err = usb_submit_urb(urb, GFP_ATOMIC);
1396 if (err < 0) {
1397 if (err != -EPERM && err != -ENODEV)
1398 BT_ERR("%s urb %p submission failed (%d)",
1399 hdev->name, urb, -err);
1400 kfree(urb->setup_packet);
1401 usb_unanchor_urb(urb);
1402 } else {
1403 usb_mark_last_busy(data->udev);
1404 }
1405
1406 done:
1407 usb_free_urb(urb);
1408 return err;
1409 }
1410
1411 static void btmtk_usb_notify(struct hci_dev *hdev, unsigned int evt)
1412 {
1413 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1414
1415 BT_DBG("%s evt %d", hdev->name, evt);
1416
1417 if (hdev->conn_hash.sco_num != data->sco_num) {
1418 data->sco_num = hdev->conn_hash.sco_num;
1419 schedule_work(&data->work);
1420 }
1421 }
1422
1423 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1424 {
1425 struct btmtk_usb_data *data = hci_get_drvdata(hdev);
1426 struct usb_interface *intf = data->isoc;
1427 struct usb_endpoint_descriptor *ep_desc;
1428 int i, err;
1429
1430 if (!data->isoc)
1431 return -ENODEV;
1432
1433 err = usb_set_interface(data->udev, 1, altsetting);
1434 if (err < 0) {
1435 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1436 return err;
1437 }
1438
1439 data->isoc_altsetting = altsetting;
1440
1441 data->isoc_tx_ep = NULL;
1442 data->isoc_rx_ep = NULL;
1443
1444 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1445 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1446
1447 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1448 data->isoc_tx_ep = ep_desc;
1449 continue;
1450 }
1451
1452 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1453 data->isoc_rx_ep = ep_desc;
1454 continue;
1455 }
1456 }
1457
1458 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1459 BT_ERR("%s invalid SCO descriptors", hdev->name);
1460 return -ENODEV;
1461 }
1462
1463 return 0;
1464 }
1465
1466 static void btmtk_usb_work(struct work_struct *work)
1467 {
1468 struct btmtk_usb_data *data = container_of(work, struct btmtk_usb_data,
1469 work);
1470 struct hci_dev *hdev = data->hdev;
1471 int new_alts;
1472 int err;
1473
1474 BT_DBG("%s\n", __func__);
1475
1476 if (hdev->conn_hash.sco_num > 0) {
1477 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1478 err = usb_autopm_get_interface(data->isoc ?
1479 data->isoc : data->intf);
1480 if (err < 0) {
1481 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1482 usb_kill_anchored_urbs(&data->isoc_anchor);
1483 return;
1484 }
1485
1486 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1487 }
1488
1489 if (hdev->voice_setting & 0x0020) {
1490 static const int alts[3] = { 2, 4, 5 };
1491 new_alts = alts[hdev->conn_hash.sco_num - 1];
1492 } else {
1493 new_alts = hdev->conn_hash.sco_num;
1494 }
1495
1496 if (data->isoc_altsetting != new_alts) {
1497 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1498 usb_kill_anchored_urbs(&data->isoc_anchor);
1499
1500 if (__set_isoc_interface(hdev, new_alts) < 0)
1501 return;
1502 }
1503
1504 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1505 if (btmtk_usb_submit_isoc_in_urb(hdev, GFP_KERNEL) < 0)
1506 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1507 else
1508 btmtk_usb_submit_isoc_in_urb(hdev, GFP_KERNEL);
1509 }
1510 } else {
1511 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1512 usb_kill_anchored_urbs(&data->isoc_anchor);
1513
1514 __set_isoc_interface(hdev, 0);
1515
1516 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1517 usb_autopm_put_interface(data->isoc ?
1518 data->isoc : data->intf);
1519 }
1520 }
1521
1522 static void btmtk_usb_waker(struct work_struct *work)
1523 {
1524 struct btmtk_usb_data *data = container_of(work, struct btmtk_usb_data,
1525 waker);
1526 int err;
1527
1528 err = usb_autopm_get_interface(data->intf);
1529
1530 if (err < 0)
1531 return;
1532
1533 usb_autopm_put_interface(data->intf);
1534 }
1535
1536 static int btmtk_usb_probe(struct usb_interface *intf,
1537 const struct usb_device_id *id)
1538 {
1539 struct btmtk_usb_data *data;
1540 struct usb_endpoint_descriptor *ep_desc;
1541 int i, err;
1542 struct hci_dev *hdev;
1543
1544 /* interface numbers are hardcoded in the spec */
1545 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1546 return -ENODEV;
1547
1548 data = kzalloc(sizeof(*data), GFP_KERNEL);
1549
1550 if (!data)
1551 return -ENOMEM;
1552
1553 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1554 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1555
1556 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1557 data->intr_ep = ep_desc;
1558 continue;
1559 }
1560
1561 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1562 data->bulk_tx_ep = ep_desc;
1563 continue;
1564 }
1565
1566 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1567 data->bulk_rx_ep = ep_desc;
1568 continue;
1569 }
1570 }
1571
1572 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1573 kfree(data);
1574 return -ENODEV;
1575 }
1576
1577 data->cmdreq_type = USB_TYPE_CLASS;
1578
1579 data->udev = interface_to_usbdev(intf);
1580 data->intf = intf;
1581
1582 spin_lock_init(&data->lock);
1583 INIT_WORK(&data->work, btmtk_usb_work);
1584 INIT_WORK(&data->waker, btmtk_usb_waker);
1585 spin_lock_init(&data->txlock);
1586
1587 init_usb_anchor(&data->tx_anchor);
1588 init_usb_anchor(&data->intr_anchor);
1589 init_usb_anchor(&data->bulk_anchor);
1590 init_usb_anchor(&data->isoc_anchor);
1591 init_usb_anchor(&data->deferred);
1592
1593 hdev = hci_alloc_dev();
1594 if (!hdev) {
1595 kfree(data);
1596 return -ENOMEM;
1597 }
1598
1599 hdev->bus = HCI_USB;
1600
1601 hci_set_drvdata(hdev, data);
1602
1603 data->hdev = hdev;
1604
1605 SET_HCIDEV_DEV(hdev, &intf->dev);
1606
1607 hdev->open = btmtk_usb_open;
1608 hdev->close = btmtk_usb_close;
1609 hdev->flush = btmtk_usb_flush;
1610 hdev->send = btmtk_usb_send_frame;
1611 hdev->notify = btmtk_usb_notify;
1612
1613 /* Interface numbers are hardcoded in the specification */
1614 data->isoc = usb_ifnum_to_if(data->udev, 1);
1615
1616 if (data->isoc) {
1617 err = usb_driver_claim_interface(&btmtk_usb_driver,
1618 data->isoc, data);
1619 if (err < 0) {
1620 hci_free_dev(hdev);
1621 kfree(data);
1622 return err;
1623 }
1624 }
1625
1626 data->io_buf = kmalloc(256, GFP_KERNEL);
1627 if (!data->io_buf) {
1628 hci_free_dev(hdev);
1629 kfree(data);
1630 return -ENOMEM;
1631 }
1632
1633 btmtk_usb_switch_iobase(data, WLAN);
1634
1635 btmtk_usb_cap_init(data);
1636
1637 err = hci_register_dev(hdev);
1638 if (err < 0) {
1639 hci_free_dev(hdev);
1640 kfree(data);
1641 return err;
1642 }
1643
1644 usb_set_intfdata(intf, data);
1645
1646 return 0;
1647 }
1648
1649 static void btmtk_usb_disconnect(struct usb_interface *intf)
1650 {
1651 struct btmtk_usb_data *data = usb_get_intfdata(intf);
1652 struct hci_dev *hdev;
1653
1654 BT_DBG("%s\n", __func__);
1655
1656 if (!data)
1657 return;
1658
1659 hdev = data->hdev;
1660 usb_set_intfdata(data->intf, NULL);
1661
1662 if (data->isoc)
1663 usb_set_intfdata(data->isoc, NULL);
1664
1665 hci_unregister_dev(hdev);
1666
1667 if (intf == data->isoc)
1668 usb_driver_release_interface(&btmtk_usb_driver, data->intf);
1669 else if (data->isoc)
1670 usb_driver_release_interface(&btmtk_usb_driver, data->isoc);
1671
1672 hci_free_dev(hdev);
1673
1674 kfree(data->io_buf);
1675
1676 kfree(data);
1677 }
1678
1679 #ifdef CONFIG_PM
1680 static int btmtk_usb_suspend(struct usb_interface *intf, pm_message_t message)
1681 {
1682 struct btmtk_usb_data *data = usb_get_intfdata(intf);
1683
1684 BT_DBG("%s\n", __func__);
1685
1686 if (data->suspend_count++)
1687 return 0;
1688
1689 spin_lock_irq(&data->txlock);
1690 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1691 set_bit(BTUSB_SUSPENDING, &data->flags);
1692 spin_unlock_irq(&data->txlock);
1693 } else {
1694 spin_unlock_irq(&data->txlock);
1695 data->suspend_count--;
1696 return -EBUSY;
1697 }
1698
1699 cancel_work_sync(&data->work);
1700
1701 btmtk_usb_stop_traffic(data);
1702 usb_kill_anchored_urbs(&data->tx_anchor);
1703
1704 return 0;
1705 }
1706
1707 static void play_deferred(struct btmtk_usb_data *data)
1708 {
1709 struct urb *urb;
1710 int err;
1711
1712 while ((urb = usb_get_from_anchor(&data->deferred))) {
1713 err = usb_submit_urb(urb, GFP_ATOMIC);
1714 if (err < 0)
1715 break;
1716
1717 data->tx_in_flight++;
1718 }
1719
1720 usb_scuttle_anchored_urbs(&data->deferred);
1721 }
1722
1723 static int btmtk_usb_resume(struct usb_interface *intf)
1724 {
1725 struct btmtk_usb_data *data = usb_get_intfdata(intf);
1726 struct hci_dev *hdev = data->hdev;
1727 int err = 0;
1728
1729 BT_DBG("%s\n", __func__);
1730
1731 if (--data->suspend_count)
1732 return 0;
1733
1734 if (!test_bit(HCI_RUNNING, &hdev->flags))
1735 goto done;
1736
1737 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1738 err = btmtk_usb_submit_intr_urb(hdev, GFP_NOIO);
1739 if (err < 0) {
1740 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1741 goto failed;
1742 }
1743 }
1744
1745 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1746 err = btmtk_usb_submit_bulk_in_urb(hdev, GFP_NOIO);
1747 if (err < 0) {
1748 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1749 goto failed;
1750 }
1751
1752 btmtk_usb_submit_bulk_in_urb(hdev, GFP_NOIO);
1753 }
1754
1755 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1756 if (btmtk_usb_submit_isoc_in_urb(hdev, GFP_NOIO) < 0)
1757 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1758 else
1759 btmtk_usb_submit_isoc_in_urb(hdev, GFP_NOIO);
1760 }
1761
1762 spin_lock_irq(&data->txlock);
1763 play_deferred(data);
1764 clear_bit(BTUSB_SUSPENDING, &data->flags);
1765 spin_unlock_irq(&data->txlock);
1766 schedule_work(&data->work);
1767
1768 return 0;
1769
1770 failed:
1771 usb_scuttle_anchored_urbs(&data->deferred);
1772 done:
1773 spin_lock_irq(&data->txlock);
1774 clear_bit(BTUSB_SUSPENDING, &data->flags);
1775 spin_unlock_irq(&data->txlock);
1776
1777 return err;
1778 }
1779 #endif
1780
1781 static struct usb_device_id btmtk_usb_table[] = {
1782 /* Mediatek MT7650 */
1783 { USB_DEVICE(0x0e8d, 0x7650) },
1784 { USB_DEVICE(0x0e8d, 0x7630) },
1785 { USB_DEVICE(0x0e8d, 0x763e) },
1786 /* Mediatek MT662 */
1787 { USB_DEVICE(0x0e8d, 0x7662) },
1788 { USB_DEVICE(0x0e8d, 0x7632) },
1789 { } /* Terminating entry */
1790 };
1791
1792 static struct usb_driver btmtk_usb_driver = {
1793 .name = "btmtk_usb",
1794 .probe = btmtk_usb_probe,
1795 .disconnect = btmtk_usb_disconnect,
1796 #ifdef CONFIG_PM
1797 .suspend = btmtk_usb_suspend,
1798 .resume = btmtk_usb_resume,
1799 #endif
1800 .id_table = btmtk_usb_table,
1801 .supports_autosuspend = 1,
1802 .disable_hub_initiated_lpm = 1,
1803 };
1804
1805 module_usb_driver(btmtk_usb_driver);
1806
1807 MODULE_DESCRIPTION("Mediatek Bluetooth USB driver ver " VERSION);
1808 MODULE_VERSION(VERSION);
1809 MODULE_LICENSE("GPL");
1810 MODULE_FIRMWARE(MT7650_FIRMWARE);
1811 MODULE_FIRMWARE(MT7662_FIRMWARE);
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