Pileus Git - ~andy/linux/blob - drivers/staging/btmtk_usb/btmtk_usb.c

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