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(0x04CA, 0x3014) },
  96         { USB_DEVICE(0x0930, 0x0219) },
  97         { USB_DEVICE(0x0930, 0x021c) },
  98         { USB_DEVICE(0x0930, 0x0220) },
  99         { USB_DEVICE(0x0930, 0x0227) },
 100         { USB_DEVICE(0x0b05, 0x17d0) },
 101         { USB_DEVICE(0x0CF3, 0x0036) },
 102         { USB_DEVICE(0x0CF3, 0x3004) },
 103         { USB_DEVICE(0x0CF3, 0x3008) },
 104         { USB_DEVICE(0x0CF3, 0x311D) },
 105         { USB_DEVICE(0x0CF3, 0x311E) },
 106         { USB_DEVICE(0x0CF3, 0x311F) },
 107         { USB_DEVICE(0x0cf3, 0x3121) },
 108         { USB_DEVICE(0x0CF3, 0x817a) },
 109         { USB_DEVICE(0x0CF3, 0x817b) },
 110         { USB_DEVICE(0x0cf3, 0xe003) },
 111         { USB_DEVICE(0x0CF3, 0xE004) },
 112         { USB_DEVICE(0x0CF3, 0xE005) },
 113         { USB_DEVICE(0x0CF3, 0xE006) },
 114         { USB_DEVICE(0x13d3, 0x3362) },
 115         { USB_DEVICE(0x13d3, 0x3375) },
 116         { USB_DEVICE(0x13d3, 0x3393) },
 117         { USB_DEVICE(0x13d3, 0x3395) },
 118         { USB_DEVICE(0x13d3, 0x3402) },
 119         { USB_DEVICE(0x13d3, 0x3408) },
 120         { USB_DEVICE(0x13d3, 0x3423) },
 121         { USB_DEVICE(0x13d3, 0x3432) },
 122         { USB_DEVICE(0x13d3, 0x3474) },
 123
 124         /* Atheros AR5BBU12 with sflash firmware */
 125         { USB_DEVICE(0x0489, 0xE02C) },
 126
 127         /* Atheros AR5BBU22 with sflash firmware */
 128         { USB_DEVICE(0x0489, 0xE036) },
 129         { USB_DEVICE(0x0489, 0xE03C) },
 130
 131         { }     /* Terminating entry */
 132 };
 133
 134 MODULE_DEVICE_TABLE(usb, ath3k_table);
 135
 136 #define BTUSB_ATH3012           0x80
 137 /* This table is to load patch and sysconfig files
 138  * for AR3012 */
 139 static const struct usb_device_id ath3k_blist_tbl[] = {
 140
 141         /* Atheros AR3012 with sflash firmware*/
 142         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 187
 188         /* Atheros AR5BBU22 with sflash firmware */
 189         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 191
 192         { }     /* Terminating entry */
 193 };
 194
 195 #define USB_REQ_DFU_DNLOAD      1
 196 #define BULK_SIZE               4096
 197 #define FW_HDR_SIZE             20
 198 #define TIMEGAP_USEC_MIN        50
 199 #define TIMEGAP_USEC_MAX        100
 200
 201 static int ath3k_load_firmware(struct usb_device *udev,
 202                                 const struct firmware *firmware)
 203 {
 204         u8 *send_buf;
 205         int err, pipe, len, size, sent = 0;
 206         int count = firmware->size;
 207
 208         BT_DBG("udev %p", udev);
 209
 210         pipe = usb_sndctrlpipe(udev, 0);
 211
 212         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 213         if (!send_buf) {
 214                 BT_ERR("Can't allocate memory chunk for firmware");
 215                 return -ENOMEM;
 216         }
 217
 218         memcpy(send_buf, firmware->data, 20);
 219         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 220                               0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
 221         if (err < 0) {
 222                 BT_ERR("Can't change to loading configuration err");
 223                 goto error;
 224         }
 225         sent += 20;
 226         count -= 20;
 227
 228         pipe = usb_sndbulkpipe(udev, 0x02);
 229
 230         while (count) {
 231                 /* workaround the compatibility issue with xHCI controller*/
 232                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 233
 234                 size = min_t(uint, count, BULK_SIZE);
 235                 memcpy(send_buf, firmware->data + sent, size);
 236
 237                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 238                                         &len, 3000);
 239
 240                 if (err || (len != size)) {
 241                         BT_ERR("Error in firmware loading err = %d,"
 242                                 "len = %d, size = %d", err, len, size);
 243                         goto error;
 244                 }
 245
 246                 sent  += size;
 247                 count -= size;
 248         }
 249
 250 error:
 251         kfree(send_buf);
 252         return err;
 253 }
 254
 255 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 256 {
 257         int ret, pipe = 0;
 258         char *buf;
 259
 260         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 261         if (!buf)
 262                 return -ENOMEM;
 263
 264         pipe = usb_rcvctrlpipe(udev, 0);
 265         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 266                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 267                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 268
 269         *state = *buf;
 270         kfree(buf);
 271
 272         return ret;
 273 }
 274
 275 static int ath3k_get_version(struct usb_device *udev,
 276                         struct ath3k_version *version)
 277 {
 278         int ret, pipe = 0;
 279         struct ath3k_version *buf;
 280         const int size = sizeof(*buf);
 281
 282         buf = kmalloc(size, GFP_KERNEL);
 283         if (!buf)
 284                 return -ENOMEM;
 285
 286         pipe = usb_rcvctrlpipe(udev, 0);
 287         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 288                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 289                               buf, size, USB_CTRL_SET_TIMEOUT);
 290
 291         memcpy(version, buf, size);
 292         kfree(buf);
 293
 294         return ret;
 295 }
 296
 297 static int ath3k_load_fwfile(struct usb_device *udev,
 298                 const struct firmware *firmware)
 299 {
 300         u8 *send_buf;
 301         int err, pipe, len, size, count, sent = 0;
 302         int ret;
 303
 304         count = firmware->size;
 305
 306         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 307         if (!send_buf) {
 308                 BT_ERR("Can't allocate memory chunk for firmware");
 309                 return -ENOMEM;
 310         }
 311
 312         size = min_t(uint, count, FW_HDR_SIZE);
 313         memcpy(send_buf, firmware->data, size);
 314
 315         pipe = usb_sndctrlpipe(udev, 0);
 316         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 317                         USB_TYPE_VENDOR, 0, 0, send_buf,
 318                         size, USB_CTRL_SET_TIMEOUT);
 319         if (ret < 0) {
 320                 BT_ERR("Can't change to loading configuration err");
 321                 kfree(send_buf);
 322                 return ret;
 323         }
 324
 325         sent += size;
 326         count -= size;
 327
 328         pipe = usb_sndbulkpipe(udev, 0x02);
 329
 330         while (count) {
 331                 /* workaround the compatibility issue with xHCI controller*/
 332                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 333
 334                 size = min_t(uint, count, BULK_SIZE);
 335                 memcpy(send_buf, firmware->data + sent, size);
 336
 337                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 338                                         &len, 3000);
 339                 if (err || (len != size)) {
 340                         BT_ERR("Error in firmware loading err = %d,"
 341                                 "len = %d, size = %d", err, len, size);
 342                         kfree(send_buf);
 343                         return err;
 344                 }
 345                 sent  += size;
 346                 count -= size;
 347         }
 348
 349         kfree(send_buf);
 350         return 0;
 351 }
 352
 353 static int ath3k_switch_pid(struct usb_device *udev)
 354 {
 355         int pipe = 0;
 356
 357         pipe = usb_sndctrlpipe(udev, 0);
 358         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 359                         USB_TYPE_VENDOR, 0, 0,
 360                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 361 }
 362
 363 static int ath3k_set_normal_mode(struct usb_device *udev)
 364 {
 365         unsigned char fw_state;
 366         int pipe = 0, ret;
 367
 368         ret = ath3k_get_state(udev, &fw_state);
 369         if (ret < 0) {
 370                 BT_ERR("Can't get state to change to normal mode err");
 371                 return ret;
 372         }
 373
 374         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 375                 BT_DBG("firmware was already in normal mode");
 376                 return 0;
 377         }
 378
 379         pipe = usb_sndctrlpipe(udev, 0);
 380         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 381                         USB_TYPE_VENDOR, 0, 0,
 382                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 383 }
 384
 385 static int ath3k_load_patch(struct usb_device *udev)
 386 {
 387         unsigned char fw_state;
 388         char filename[ATH3K_NAME_LEN] = {0};
 389         const struct firmware *firmware;
 390         struct ath3k_version fw_version;
 391         __u32 pt_rom_version, pt_build_version;
 392         int ret;
 393
 394         ret = ath3k_get_state(udev, &fw_state);
 395         if (ret < 0) {
 396                 BT_ERR("Can't get state to change to load ram patch err");
 397                 return ret;
 398         }
 399
 400         if (fw_state & ATH3K_PATCH_UPDATE) {
 401                 BT_DBG("Patch was already downloaded");
 402                 return 0;
 403         }
 404
 405         ret = ath3k_get_version(udev, &fw_version);
 406         if (ret < 0) {
 407                 BT_ERR("Can't get version to change to load ram patch err");
 408                 return ret;
 409         }
 410
 411         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 412                  le32_to_cpu(fw_version.rom_version));
 413
 414         ret = request_firmware(&firmware, filename, &udev->dev);
 415         if (ret < 0) {
 416                 BT_ERR("Patch file not found %s", filename);
 417                 return ret;
 418         }
 419
 420         pt_rom_version = get_unaligned_le32(firmware->data +
 421                                             firmware->size - 8);
 422         pt_build_version = get_unaligned_le32(firmware->data +
 423                                               firmware->size - 4);
 424
 425         if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
 426             pt_build_version <= le32_to_cpu(fw_version.build_version)) {
 427                 BT_ERR("Patch file version did not match with firmware");
 428                 release_firmware(firmware);
 429                 return -EINVAL;
 430         }
 431
 432         ret = ath3k_load_fwfile(udev, firmware);
 433         release_firmware(firmware);
 434
 435         return ret;
 436 }
 437
 438 static int ath3k_load_syscfg(struct usb_device *udev)
 439 {
 440         unsigned char fw_state;
 441         char filename[ATH3K_NAME_LEN] = {0};
 442         const struct firmware *firmware;
 443         struct ath3k_version fw_version;
 444         int clk_value, ret;
 445
 446         ret = ath3k_get_state(udev, &fw_state);
 447         if (ret < 0) {
 448                 BT_ERR("Can't get state to change to load configuration err");
 449                 return -EBUSY;
 450         }
 451
 452         ret = ath3k_get_version(udev, &fw_version);
 453         if (ret < 0) {
 454                 BT_ERR("Can't get version to change to load ram patch err");
 455                 return ret;
 456         }
 457
 458         switch (fw_version.ref_clock) {
 459
 460         case ATH3K_XTAL_FREQ_26M:
 461                 clk_value = 26;
 462                 break;
 463         case ATH3K_XTAL_FREQ_40M:
 464                 clk_value = 40;
 465                 break;
 466         case ATH3K_XTAL_FREQ_19P2:
 467                 clk_value = 19;
 468                 break;
 469         default:
 470                 clk_value = 0;
 471                 break;
 472         }
 473
 474         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 475                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 476
 477         ret = request_firmware(&firmware, filename, &udev->dev);
 478         if (ret < 0) {
 479                 BT_ERR("Configuration file not found %s", filename);
 480                 return ret;
 481         }
 482
 483         ret = ath3k_load_fwfile(udev, firmware);
 484         release_firmware(firmware);
 485
 486         return ret;
 487 }
 488
 489 static int ath3k_probe(struct usb_interface *intf,
 490                         const struct usb_device_id *id)
 491 {
 492         const struct firmware *firmware;
 493         struct usb_device *udev = interface_to_usbdev(intf);
 494         int ret;
 495
 496         BT_DBG("intf %p id %p", intf, id);
 497
 498         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 499                 return -ENODEV;
 500
 501         /* match device ID in ath3k blacklist table */
 502         if (!id->driver_info) {
 503                 const struct usb_device_id *match;
 504                 match = usb_match_id(intf, ath3k_blist_tbl);
 505                 if (match)
 506                         id = match;
 507         }
 508
 509         /* load patch and sysconfig files for AR3012 */
 510         if (id->driver_info & BTUSB_ATH3012) {
 511
 512                 /* New firmware with patch and sysconfig files already loaded */
 513                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 514                         return -ENODEV;
 515
 516                 ret = ath3k_load_patch(udev);
 517                 if (ret < 0) {
 518                         BT_ERR("Loading patch file failed");
 519                         return ret;
 520                 }
 521                 ret = ath3k_load_syscfg(udev);
 522                 if (ret < 0) {
 523                         BT_ERR("Loading sysconfig file failed");
 524                         return ret;
 525                 }
 526                 ret = ath3k_set_normal_mode(udev);
 527                 if (ret < 0) {
 528                         BT_ERR("Set normal mode failed");
 529                         return ret;
 530                 }
 531                 ath3k_switch_pid(udev);
 532                 return 0;
 533         }
 534
 535         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 536         if (ret < 0) {
 537                 if (ret == -ENOENT)
 538                         BT_ERR("Firmware file \"%s\" not found",
 539                                                         ATH3K_FIRMWARE);
 540                 else
 541                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 542                                                         ATH3K_FIRMWARE, ret);
 543                 return ret;
 544         }
 545
 546         ret = ath3k_load_firmware(udev, firmware);
 547         release_firmware(firmware);
 548
 549         return ret;
 550 }
 551
 552 static void ath3k_disconnect(struct usb_interface *intf)
 553 {
 554         BT_DBG("ath3k_disconnect intf %p", intf);
 555 }
 556
 557 static struct usb_driver ath3k_driver = {
 558         .name           = "ath3k",
 559         .probe          = ath3k_probe,
 560         .disconnect     = ath3k_disconnect,
 561         .id_table       = ath3k_table,
 562         .disable_hub_initiated_lpm = 1,
 563 };
 564
 565 module_usb_driver(ath3k_driver);
 566
 567 MODULE_AUTHOR("Atheros Communications");
 568 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 569 MODULE_VERSION(VERSION);
 570 MODULE_LICENSE("GPL");
 571 MODULE_FIRMWARE(ATH3K_FIRMWARE);