drivers/bluetooth/ath3k.c

   1 /*
   2  * Copyright (c) 2008-2009 Atheros Communications Inc.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19
  20
  21 #include <linux/module.h>
  22 #include <linux/kernel.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/types.h>
  26 #include <linux/errno.h>
  27 #include <linux/device.h>
  28 #include <linux/firmware.h>
  29 #include <linux/usb.h>
  30 #include <asm/unaligned.h>
  31 #include <net/bluetooth/bluetooth.h>
  32
  33 #define VERSION "1.0"
  34 #define ATH3K_FIRMWARE  "ath3k-1.fw"
  35
  36 #define ATH3K_DNLOAD                            0x01
  37 #define ATH3K_GETSTATE                          0x05
  38 #define ATH3K_SET_NORMAL_MODE                   0x07
  39 #define ATH3K_GETVERSION                        0x09
  40 #define USB_REG_SWITCH_VID_PID                  0x0a
  41
  42 #define ATH3K_MODE_MASK                         0x3F
  43 #define ATH3K_NORMAL_MODE                       0x0E
  44
  45 #define ATH3K_PATCH_UPDATE                      0x80
  46 #define ATH3K_SYSCFG_UPDATE                     0x40
  47
  48 #define ATH3K_XTAL_FREQ_26M                     0x00
  49 #define ATH3K_XTAL_FREQ_40M                     0x01
  50 #define ATH3K_XTAL_FREQ_19P2                    0x02
  51 #define ATH3K_NAME_LEN                          0xFF
  52
  53 struct ath3k_version {
  54         __le32  rom_version;
  55         __le32  build_version;
  56         __le32  ram_version;
  57         __u8    ref_clock;
  58         __u8    reserved[7];
  59 } __packed;
  60
  61 static const struct usb_device_id ath3k_table[] = {
  62         /* Atheros AR3011 */
  63         { USB_DEVICE(0x0CF3, 0x3000) },
  64
  65         /* Atheros AR3011 with sflash firmware*/
  66         { USB_DEVICE(0x0489, 0xE027) },
  67         { USB_DEVICE(0x0489, 0xE03D) },
  68         { USB_DEVICE(0x04F2, 0xAFF1) },
  69         { USB_DEVICE(0x0930, 0x0215) },
  70         { USB_DEVICE(0x0CF3, 0x3002) },
  71         { USB_DEVICE(0x0CF3, 0xE019) },
  72         { USB_DEVICE(0x13d3, 0x3304) },
  73
  74         /* Atheros AR9285 Malbec with sflash firmware */
  75         { USB_DEVICE(0x03F0, 0x311D) },
  76
  77         /* Atheros AR3012 with sflash firmware*/
  78         { USB_DEVICE(0x0489, 0xe04d) },
  79         { USB_DEVICE(0x0489, 0xe04e) },
  80         { USB_DEVICE(0x0489, 0xe057) },
  81         { USB_DEVICE(0x0489, 0xe056) },
  82         { USB_DEVICE(0x0489, 0xe05f) },
  83         { USB_DEVICE(0x0489, 0xe076) },
  84         { USB_DEVICE(0x0489, 0xe078) },
  85         { USB_DEVICE(0x04c5, 0x1330) },
  86         { USB_DEVICE(0x04CA, 0x3004) },
  87         { USB_DEVICE(0x04CA, 0x3005) },
  88         { USB_DEVICE(0x04CA, 0x3006) },
  89         { USB_DEVICE(0x04CA, 0x3007) },
  90         { USB_DEVICE(0x04CA, 0x3008) },
  91         { USB_DEVICE(0x04CA, 0x300b) },
  92         { USB_DEVICE(0x04CA, 0x300d) },
  93         { USB_DEVICE(0x04CA, 0x300f) },
  94         { USB_DEVICE(0x04CA, 0x3010) },
  95         { USB_DEVICE(0x0930, 0x0219) },
  96         { USB_DEVICE(0x0930, 0x021c) },
  97         { USB_DEVICE(0x0930, 0x0220) },
  98         { USB_DEVICE(0x0930, 0x0227) },
  99         { USB_DEVICE(0x0b05, 0x17d0) },
 100         { USB_DEVICE(0x0CF3, 0x0036) },
 101         { USB_DEVICE(0x0CF3, 0x3004) },
 102         { USB_DEVICE(0x0CF3, 0x3008) },
 103         { USB_DEVICE(0x0CF3, 0x311D) },
 104         { USB_DEVICE(0x0CF3, 0x311E) },
 105         { USB_DEVICE(0x0CF3, 0x311F) },
 106         { USB_DEVICE(0x0cf3, 0x3121) },
 107         { USB_DEVICE(0x0CF3, 0x817a) },
 108         { USB_DEVICE(0x0CF3, 0x817b) },
 109         { USB_DEVICE(0x0cf3, 0xe003) },
 110         { USB_DEVICE(0x0CF3, 0xE004) },
 111         { USB_DEVICE(0x0CF3, 0xE005) },
 112         { USB_DEVICE(0x0CF3, 0xE006) },
 113         { USB_DEVICE(0x13d3, 0x3362) },
 114         { USB_DEVICE(0x13d3, 0x3375) },
 115         { USB_DEVICE(0x13d3, 0x3393) },
 116         { USB_DEVICE(0x13d3, 0x3395) },
 117         { USB_DEVICE(0x13d3, 0x3402) },
 118         { USB_DEVICE(0x13d3, 0x3408) },
 119         { USB_DEVICE(0x13d3, 0x3423) },
 120         { USB_DEVICE(0x13d3, 0x3432) },
 121         { USB_DEVICE(0x13d3, 0x3474) },
 122
 123         /* Atheros AR5BBU12 with sflash firmware */
 124         { USB_DEVICE(0x0489, 0xE02C) },
 125
 126         /* Atheros AR5BBU22 with sflash firmware */
 127         { USB_DEVICE(0x0489, 0xE036) },
 128         { USB_DEVICE(0x0489, 0xE03C) },
 129
 130         { }     /* Terminating entry */
 131 };
 132
 133 MODULE_DEVICE_TABLE(usb, ath3k_table);
 134
 135 #define BTUSB_ATH3012           0x80
 136 /* This table is to load patch and sysconfig files
 137  * for AR3012 */
 138 static const struct usb_device_id ath3k_blist_tbl[] = {
 139
 140         /* Atheros AR3012 with sflash firmware*/
 141         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 185
 186         /* Atheros AR5BBU22 with sflash firmware */
 187         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 189
 190         { }     /* Terminating entry */
 191 };
 192
 193 #define USB_REQ_DFU_DNLOAD      1
 194 #define BULK_SIZE               4096
 195 #define FW_HDR_SIZE             20
 196 #define TIMEGAP_USEC_MIN        50
 197 #define TIMEGAP_USEC_MAX        100
 198
 199 static int ath3k_load_firmware(struct usb_device *udev,
 200                                 const struct firmware *firmware)
 201 {
 202         u8 *send_buf;
 203         int err, pipe, len, size, sent = 0;
 204         int count = firmware->size;
 205
 206         BT_DBG("udev %p", udev);
 207
 208         pipe = usb_sndctrlpipe(udev, 0);
 209
 210         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 211         if (!send_buf) {
 212                 BT_ERR("Can't allocate memory chunk for firmware");
 213                 return -ENOMEM;
 214         }
 215
 216         memcpy(send_buf, firmware->data, 20);
 217         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 218                               0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
 219         if (err < 0) {
 220                 BT_ERR("Can't change to loading configuration err");
 221                 goto error;
 222         }
 223         sent += 20;
 224         count -= 20;
 225
 226         pipe = usb_sndbulkpipe(udev, 0x02);
 227
 228         while (count) {
 229                 /* workaround the compatibility issue with xHCI controller*/
 230                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 231
 232                 size = min_t(uint, count, BULK_SIZE);
 233                 memcpy(send_buf, firmware->data + sent, size);
 234
 235                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 236                                         &len, 3000);
 237
 238                 if (err || (len != size)) {
 239                         BT_ERR("Error in firmware loading err = %d,"
 240                                 "len = %d, size = %d", err, len, size);
 241                         goto error;
 242                 }
 243
 244                 sent  += size;
 245                 count -= size;
 246         }
 247
 248 error:
 249         kfree(send_buf);
 250         return err;
 251 }
 252
 253 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 254 {
 255         int ret, pipe = 0;
 256         char *buf;
 257
 258         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 259         if (!buf)
 260                 return -ENOMEM;
 261
 262         pipe = usb_rcvctrlpipe(udev, 0);
 263         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 264                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 265                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 266
 267         *state = *buf;
 268         kfree(buf);
 269
 270         return ret;
 271 }
 272
 273 static int ath3k_get_version(struct usb_device *udev,
 274                         struct ath3k_version *version)
 275 {
 276         int ret, pipe = 0;
 277         struct ath3k_version *buf;
 278         const int size = sizeof(*buf);
 279
 280         buf = kmalloc(size, GFP_KERNEL);
 281         if (!buf)
 282                 return -ENOMEM;
 283
 284         pipe = usb_rcvctrlpipe(udev, 0);
 285         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 286                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 287                               buf, size, USB_CTRL_SET_TIMEOUT);
 288
 289         memcpy(version, buf, size);
 290         kfree(buf);
 291
 292         return ret;
 293 }
 294
 295 static int ath3k_load_fwfile(struct usb_device *udev,
 296                 const struct firmware *firmware)
 297 {
 298         u8 *send_buf;
 299         int err, pipe, len, size, count, sent = 0;
 300         int ret;
 301
 302         count = firmware->size;
 303
 304         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 305         if (!send_buf) {
 306                 BT_ERR("Can't allocate memory chunk for firmware");
 307                 return -ENOMEM;
 308         }
 309
 310         size = min_t(uint, count, FW_HDR_SIZE);
 311         memcpy(send_buf, firmware->data, size);
 312
 313         pipe = usb_sndctrlpipe(udev, 0);
 314         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 315                         USB_TYPE_VENDOR, 0, 0, send_buf,
 316                         size, USB_CTRL_SET_TIMEOUT);
 317         if (ret < 0) {
 318                 BT_ERR("Can't change to loading configuration err");
 319                 kfree(send_buf);
 320                 return ret;
 321         }
 322
 323         sent += size;
 324         count -= size;
 325
 326         pipe = usb_sndbulkpipe(udev, 0x02);
 327
 328         while (count) {
 329                 /* workaround the compatibility issue with xHCI controller*/
 330                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 331
 332                 size = min_t(uint, count, BULK_SIZE);
 333                 memcpy(send_buf, firmware->data + sent, size);
 334
 335                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 336                                         &len, 3000);
 337                 if (err || (len != size)) {
 338                         BT_ERR("Error in firmware loading err = %d,"
 339                                 "len = %d, size = %d", err, len, size);
 340                         kfree(send_buf);
 341                         return err;
 342                 }
 343                 sent  += size;
 344                 count -= size;
 345         }
 346
 347         kfree(send_buf);
 348         return 0;
 349 }
 350
 351 static int ath3k_switch_pid(struct usb_device *udev)
 352 {
 353         int pipe = 0;
 354
 355         pipe = usb_sndctrlpipe(udev, 0);
 356         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 357                         USB_TYPE_VENDOR, 0, 0,
 358                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 359 }
 360
 361 static int ath3k_set_normal_mode(struct usb_device *udev)
 362 {
 363         unsigned char fw_state;
 364         int pipe = 0, ret;
 365
 366         ret = ath3k_get_state(udev, &fw_state);
 367         if (ret < 0) {
 368                 BT_ERR("Can't get state to change to normal mode err");
 369                 return ret;
 370         }
 371
 372         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 373                 BT_DBG("firmware was already in normal mode");
 374                 return 0;
 375         }
 376
 377         pipe = usb_sndctrlpipe(udev, 0);
 378         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 379                         USB_TYPE_VENDOR, 0, 0,
 380                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 381 }
 382
 383 static int ath3k_load_patch(struct usb_device *udev)
 384 {
 385         unsigned char fw_state;
 386         char filename[ATH3K_NAME_LEN] = {0};
 387         const struct firmware *firmware;
 388         struct ath3k_version fw_version;
 389         __u32 pt_rom_version, pt_build_version;
 390         int ret;
 391
 392         ret = ath3k_get_state(udev, &fw_state);
 393         if (ret < 0) {
 394                 BT_ERR("Can't get state to change to load ram patch err");
 395                 return ret;
 396         }
 397
 398         if (fw_state & ATH3K_PATCH_UPDATE) {
 399                 BT_DBG("Patch was already downloaded");
 400                 return 0;
 401         }
 402
 403         ret = ath3k_get_version(udev, &fw_version);
 404         if (ret < 0) {
 405                 BT_ERR("Can't get version to change to load ram patch err");
 406                 return ret;
 407         }
 408
 409         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 410                  le32_to_cpu(fw_version.rom_version));
 411
 412         ret = request_firmware(&firmware, filename, &udev->dev);
 413         if (ret < 0) {
 414                 BT_ERR("Patch file not found %s", filename);
 415                 return ret;
 416         }
 417
 418         pt_rom_version = get_unaligned_le32(firmware->data +
 419                                             firmware->size - 8);
 420         pt_build_version = get_unaligned_le32(firmware->data +
 421                                               firmware->size - 4);
 422
 423         if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
 424             pt_build_version <= le32_to_cpu(fw_version.build_version)) {
 425                 BT_ERR("Patch file version did not match with firmware");
 426                 release_firmware(firmware);
 427                 return -EINVAL;
 428         }
 429
 430         ret = ath3k_load_fwfile(udev, firmware);
 431         release_firmware(firmware);
 432
 433         return ret;
 434 }
 435
 436 static int ath3k_load_syscfg(struct usb_device *udev)
 437 {
 438         unsigned char fw_state;
 439         char filename[ATH3K_NAME_LEN] = {0};
 440         const struct firmware *firmware;
 441         struct ath3k_version fw_version;
 442         int clk_value, ret;
 443
 444         ret = ath3k_get_state(udev, &fw_state);
 445         if (ret < 0) {
 446                 BT_ERR("Can't get state to change to load configuration err");
 447                 return -EBUSY;
 448         }
 449
 450         ret = ath3k_get_version(udev, &fw_version);
 451         if (ret < 0) {
 452                 BT_ERR("Can't get version to change to load ram patch err");
 453                 return ret;
 454         }
 455
 456         switch (fw_version.ref_clock) {
 457
 458         case ATH3K_XTAL_FREQ_26M:
 459                 clk_value = 26;
 460                 break;
 461         case ATH3K_XTAL_FREQ_40M:
 462                 clk_value = 40;
 463                 break;
 464         case ATH3K_XTAL_FREQ_19P2:
 465                 clk_value = 19;
 466                 break;
 467         default:
 468                 clk_value = 0;
 469                 break;
 470         }
 471
 472         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 473                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 474
 475         ret = request_firmware(&firmware, filename, &udev->dev);
 476         if (ret < 0) {
 477                 BT_ERR("Configuration file not found %s", filename);
 478                 return ret;
 479         }
 480
 481         ret = ath3k_load_fwfile(udev, firmware);
 482         release_firmware(firmware);
 483
 484         return ret;
 485 }
 486
 487 static int ath3k_probe(struct usb_interface *intf,
 488                         const struct usb_device_id *id)
 489 {
 490         const struct firmware *firmware;
 491         struct usb_device *udev = interface_to_usbdev(intf);
 492         int ret;
 493
 494         BT_DBG("intf %p id %p", intf, id);
 495
 496         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 497                 return -ENODEV;
 498
 499         /* match device ID in ath3k blacklist table */
 500         if (!id->driver_info) {
 501                 const struct usb_device_id *match;
 502                 match = usb_match_id(intf, ath3k_blist_tbl);
 503                 if (match)
 504                         id = match;
 505         }
 506
 507         /* load patch and sysconfig files for AR3012 */
 508         if (id->driver_info & BTUSB_ATH3012) {
 509
 510                 /* New firmware with patch and sysconfig files already loaded */
 511                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 512                         return -ENODEV;
 513
 514                 ret = ath3k_load_patch(udev);
 515                 if (ret < 0) {
 516                         BT_ERR("Loading patch file failed");
 517                         return ret;
 518                 }
 519                 ret = ath3k_load_syscfg(udev);
 520                 if (ret < 0) {
 521                         BT_ERR("Loading sysconfig file failed");
 522                         return ret;
 523                 }
 524                 ret = ath3k_set_normal_mode(udev);
 525                 if (ret < 0) {
 526                         BT_ERR("Set normal mode failed");
 527                         return ret;
 528                 }
 529                 ath3k_switch_pid(udev);
 530                 return 0;
 531         }
 532
 533         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 534         if (ret < 0) {
 535                 if (ret == -ENOENT)
 536                         BT_ERR("Firmware file \"%s\" not found",
 537                                                         ATH3K_FIRMWARE);
 538                 else
 539                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 540                                                         ATH3K_FIRMWARE, ret);
 541                 return ret;
 542         }
 543
 544         ret = ath3k_load_firmware(udev, firmware);
 545         release_firmware(firmware);
 546
 547         return ret;
 548 }
 549
 550 static void ath3k_disconnect(struct usb_interface *intf)
 551 {
 552         BT_DBG("ath3k_disconnect intf %p", intf);
 553 }
 554
 555 static struct usb_driver ath3k_driver = {
 556         .name           = "ath3k",
 557         .probe          = ath3k_probe,
 558         .disconnect     = ath3k_disconnect,
 559         .id_table       = ath3k_table,
 560         .disable_hub_initiated_lpm = 1,
 561 };
 562
 563 module_usb_driver(ath3k_driver);
 564
 565 MODULE_AUTHOR("Atheros Communications");
 566 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 567 MODULE_VERSION(VERSION);
 568 MODULE_LICENSE("GPL");
 569 MODULE_FIRMWARE(ATH3K_FIRMWARE);