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(0x0489, 0xe095) },
  86         { USB_DEVICE(0x04c5, 0x1330) },
  87         { USB_DEVICE(0x04CA, 0x3004) },
  88         { USB_DEVICE(0x04CA, 0x3005) },
  89         { USB_DEVICE(0x04CA, 0x3006) },
  90         { USB_DEVICE(0x04CA, 0x3007) },
  91         { USB_DEVICE(0x04CA, 0x3008) },
  92         { USB_DEVICE(0x04CA, 0x300b) },
  93         { USB_DEVICE(0x04CA, 0x300d) },
  94         { USB_DEVICE(0x04CA, 0x300f) },
  95         { USB_DEVICE(0x04CA, 0x3010) },
  96         { USB_DEVICE(0x04CA, 0x3014) },
  97         { USB_DEVICE(0x0930, 0x0219) },
  98         { USB_DEVICE(0x0930, 0x021c) },
  99         { USB_DEVICE(0x0930, 0x0220) },
 100         { USB_DEVICE(0x0930, 0x0227) },
 101         { USB_DEVICE(0x0b05, 0x17d0) },
 102         { USB_DEVICE(0x0CF3, 0x0036) },
 103         { USB_DEVICE(0x0CF3, 0x3004) },
 104         { USB_DEVICE(0x0CF3, 0x3008) },
 105         { USB_DEVICE(0x0CF3, 0x311D) },
 106         { USB_DEVICE(0x0CF3, 0x311E) },
 107         { USB_DEVICE(0x0CF3, 0x311F) },
 108         { USB_DEVICE(0x0cf3, 0x3121) },
 109         { USB_DEVICE(0x0CF3, 0x817a) },
 110         { USB_DEVICE(0x0CF3, 0x817b) },
 111         { USB_DEVICE(0x0cf3, 0xe003) },
 112         { USB_DEVICE(0x0CF3, 0xE004) },
 113         { USB_DEVICE(0x0CF3, 0xE005) },
 114         { USB_DEVICE(0x0CF3, 0xE006) },
 115         { USB_DEVICE(0x13d3, 0x3362) },
 116         { USB_DEVICE(0x13d3, 0x3375) },
 117         { USB_DEVICE(0x13d3, 0x3393) },
 118         { USB_DEVICE(0x13d3, 0x3395) },
 119         { USB_DEVICE(0x13d3, 0x3402) },
 120         { USB_DEVICE(0x13d3, 0x3408) },
 121         { USB_DEVICE(0x13d3, 0x3423) },
 122         { USB_DEVICE(0x13d3, 0x3432) },
 123         { USB_DEVICE(0x13d3, 0x3474) },
 124
 125         /* Atheros AR5BBU12 with sflash firmware */
 126         { USB_DEVICE(0x0489, 0xE02C) },
 127
 128         /* Atheros AR5BBU22 with sflash firmware */
 129         { USB_DEVICE(0x0489, 0xE036) },
 130         { USB_DEVICE(0x0489, 0xE03C) },
 131
 132         { }     /* Terminating entry */
 133 };
 134
 135 MODULE_DEVICE_TABLE(usb, ath3k_table);
 136
 137 #define BTUSB_ATH3012           0x80
 138 /* This table is to load patch and sysconfig files
 139  * for AR3012 */
 140 static const struct usb_device_id ath3k_blist_tbl[] = {
 141
 142         /* Atheros AR3012 with sflash firmware*/
 143         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 189
 190         /* Atheros AR5BBU22 with sflash firmware */
 191         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 193
 194         { }     /* Terminating entry */
 195 };
 196
 197 #define USB_REQ_DFU_DNLOAD      1
 198 #define BULK_SIZE               4096
 199 #define FW_HDR_SIZE             20
 200 #define TIMEGAP_USEC_MIN        50
 201 #define TIMEGAP_USEC_MAX        100
 202
 203 static int ath3k_load_firmware(struct usb_device *udev,
 204                                 const struct firmware *firmware)
 205 {
 206         u8 *send_buf;
 207         int err, pipe, len, size, sent = 0;
 208         int count = firmware->size;
 209
 210         BT_DBG("udev %p", udev);
 211
 212         pipe = usb_sndctrlpipe(udev, 0);
 213
 214         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 215         if (!send_buf) {
 216                 BT_ERR("Can't allocate memory chunk for firmware");
 217                 return -ENOMEM;
 218         }
 219
 220         memcpy(send_buf, firmware->data, 20);
 221         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 222                               0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
 223         if (err < 0) {
 224                 BT_ERR("Can't change to loading configuration err");
 225                 goto error;
 226         }
 227         sent += 20;
 228         count -= 20;
 229
 230         pipe = usb_sndbulkpipe(udev, 0x02);
 231
 232         while (count) {
 233                 /* workaround the compatibility issue with xHCI controller*/
 234                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 235
 236                 size = min_t(uint, count, BULK_SIZE);
 237                 memcpy(send_buf, firmware->data + sent, size);
 238
 239                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 240                                         &len, 3000);
 241
 242                 if (err || (len != size)) {
 243                         BT_ERR("Error in firmware loading err = %d,"
 244                                 "len = %d, size = %d", err, len, size);
 245                         goto error;
 246                 }
 247
 248                 sent  += size;
 249                 count -= size;
 250         }
 251
 252 error:
 253         kfree(send_buf);
 254         return err;
 255 }
 256
 257 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 258 {
 259         int ret, pipe = 0;
 260         char *buf;
 261
 262         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 263         if (!buf)
 264                 return -ENOMEM;
 265
 266         pipe = usb_rcvctrlpipe(udev, 0);
 267         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 268                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 269                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 270
 271         *state = *buf;
 272         kfree(buf);
 273
 274         return ret;
 275 }
 276
 277 static int ath3k_get_version(struct usb_device *udev,
 278                         struct ath3k_version *version)
 279 {
 280         int ret, pipe = 0;
 281         struct ath3k_version *buf;
 282         const int size = sizeof(*buf);
 283
 284         buf = kmalloc(size, GFP_KERNEL);
 285         if (!buf)
 286                 return -ENOMEM;
 287
 288         pipe = usb_rcvctrlpipe(udev, 0);
 289         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 290                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 291                               buf, size, USB_CTRL_SET_TIMEOUT);
 292
 293         memcpy(version, buf, size);
 294         kfree(buf);
 295
 296         return ret;
 297 }
 298
 299 static int ath3k_load_fwfile(struct usb_device *udev,
 300                 const struct firmware *firmware)
 301 {
 302         u8 *send_buf;
 303         int err, pipe, len, size, count, sent = 0;
 304         int ret;
 305
 306         count = firmware->size;
 307
 308         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 309         if (!send_buf) {
 310                 BT_ERR("Can't allocate memory chunk for firmware");
 311                 return -ENOMEM;
 312         }
 313
 314         size = min_t(uint, count, FW_HDR_SIZE);
 315         memcpy(send_buf, firmware->data, size);
 316
 317         pipe = usb_sndctrlpipe(udev, 0);
 318         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 319                         USB_TYPE_VENDOR, 0, 0, send_buf,
 320                         size, USB_CTRL_SET_TIMEOUT);
 321         if (ret < 0) {
 322                 BT_ERR("Can't change to loading configuration err");
 323                 kfree(send_buf);
 324                 return ret;
 325         }
 326
 327         sent += size;
 328         count -= size;
 329
 330         pipe = usb_sndbulkpipe(udev, 0x02);
 331
 332         while (count) {
 333                 /* workaround the compatibility issue with xHCI controller*/
 334                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 335
 336                 size = min_t(uint, count, BULK_SIZE);
 337                 memcpy(send_buf, firmware->data + sent, size);
 338
 339                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 340                                         &len, 3000);
 341                 if (err || (len != size)) {
 342                         BT_ERR("Error in firmware loading err = %d,"
 343                                 "len = %d, size = %d", err, len, size);
 344                         kfree(send_buf);
 345                         return err;
 346                 }
 347                 sent  += size;
 348                 count -= size;
 349         }
 350
 351         kfree(send_buf);
 352         return 0;
 353 }
 354
 355 static int ath3k_switch_pid(struct usb_device *udev)
 356 {
 357         int pipe = 0;
 358
 359         pipe = usb_sndctrlpipe(udev, 0);
 360         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 361                         USB_TYPE_VENDOR, 0, 0,
 362                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 363 }
 364
 365 static int ath3k_set_normal_mode(struct usb_device *udev)
 366 {
 367         unsigned char fw_state;
 368         int pipe = 0, ret;
 369
 370         ret = ath3k_get_state(udev, &fw_state);
 371         if (ret < 0) {
 372                 BT_ERR("Can't get state to change to normal mode err");
 373                 return ret;
 374         }
 375
 376         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 377                 BT_DBG("firmware was already in normal mode");
 378                 return 0;
 379         }
 380
 381         pipe = usb_sndctrlpipe(udev, 0);
 382         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 383                         USB_TYPE_VENDOR, 0, 0,
 384                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 385 }
 386
 387 static int ath3k_load_patch(struct usb_device *udev)
 388 {
 389         unsigned char fw_state;
 390         char filename[ATH3K_NAME_LEN] = {0};
 391         const struct firmware *firmware;
 392         struct ath3k_version fw_version;
 393         __u32 pt_rom_version, pt_build_version;
 394         int ret;
 395
 396         ret = ath3k_get_state(udev, &fw_state);
 397         if (ret < 0) {
 398                 BT_ERR("Can't get state to change to load ram patch err");
 399                 return ret;
 400         }
 401
 402         if (fw_state & ATH3K_PATCH_UPDATE) {
 403                 BT_DBG("Patch was already downloaded");
 404                 return 0;
 405         }
 406
 407         ret = ath3k_get_version(udev, &fw_version);
 408         if (ret < 0) {
 409                 BT_ERR("Can't get version to change to load ram patch err");
 410                 return ret;
 411         }
 412
 413         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 414                  le32_to_cpu(fw_version.rom_version));
 415
 416         ret = request_firmware(&firmware, filename, &udev->dev);
 417         if (ret < 0) {
 418                 BT_ERR("Patch file not found %s", filename);
 419                 return ret;
 420         }
 421
 422         pt_rom_version = get_unaligned_le32(firmware->data +
 423                                             firmware->size - 8);
 424         pt_build_version = get_unaligned_le32(firmware->data +
 425                                               firmware->size - 4);
 426
 427         if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
 428             pt_build_version <= le32_to_cpu(fw_version.build_version)) {
 429                 BT_ERR("Patch file version did not match with firmware");
 430                 release_firmware(firmware);
 431                 return -EINVAL;
 432         }
 433
 434         ret = ath3k_load_fwfile(udev, firmware);
 435         release_firmware(firmware);
 436
 437         return ret;
 438 }
 439
 440 static int ath3k_load_syscfg(struct usb_device *udev)
 441 {
 442         unsigned char fw_state;
 443         char filename[ATH3K_NAME_LEN] = {0};
 444         const struct firmware *firmware;
 445         struct ath3k_version fw_version;
 446         int clk_value, ret;
 447
 448         ret = ath3k_get_state(udev, &fw_state);
 449         if (ret < 0) {
 450                 BT_ERR("Can't get state to change to load configuration err");
 451                 return -EBUSY;
 452         }
 453
 454         ret = ath3k_get_version(udev, &fw_version);
 455         if (ret < 0) {
 456                 BT_ERR("Can't get version to change to load ram patch err");
 457                 return ret;
 458         }
 459
 460         switch (fw_version.ref_clock) {
 461
 462         case ATH3K_XTAL_FREQ_26M:
 463                 clk_value = 26;
 464                 break;
 465         case ATH3K_XTAL_FREQ_40M:
 466                 clk_value = 40;
 467                 break;
 468         case ATH3K_XTAL_FREQ_19P2:
 469                 clk_value = 19;
 470                 break;
 471         default:
 472                 clk_value = 0;
 473                 break;
 474         }
 475
 476         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 477                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 478
 479         ret = request_firmware(&firmware, filename, &udev->dev);
 480         if (ret < 0) {
 481                 BT_ERR("Configuration file not found %s", filename);
 482                 return ret;
 483         }
 484
 485         ret = ath3k_load_fwfile(udev, firmware);
 486         release_firmware(firmware);
 487
 488         return ret;
 489 }
 490
 491 static int ath3k_probe(struct usb_interface *intf,
 492                         const struct usb_device_id *id)
 493 {
 494         const struct firmware *firmware;
 495         struct usb_device *udev = interface_to_usbdev(intf);
 496         int ret;
 497
 498         BT_DBG("intf %p id %p", intf, id);
 499
 500         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 501                 return -ENODEV;
 502
 503         /* match device ID in ath3k blacklist table */
 504         if (!id->driver_info) {
 505                 const struct usb_device_id *match;
 506
 507                 match = usb_match_id(intf, ath3k_blist_tbl);
 508                 if (match)
 509                         id = match;
 510         }
 511
 512         /* load patch and sysconfig files for AR3012 */
 513         if (id->driver_info & BTUSB_ATH3012) {
 514
 515                 /* New firmware with patch and sysconfig files already loaded */
 516                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 517                         return -ENODEV;
 518
 519                 ret = ath3k_load_patch(udev);
 520                 if (ret < 0) {
 521                         BT_ERR("Loading patch file failed");
 522                         return ret;
 523                 }
 524                 ret = ath3k_load_syscfg(udev);
 525                 if (ret < 0) {
 526                         BT_ERR("Loading sysconfig file failed");
 527                         return ret;
 528                 }
 529                 ret = ath3k_set_normal_mode(udev);
 530                 if (ret < 0) {
 531                         BT_ERR("Set normal mode failed");
 532                         return ret;
 533                 }
 534                 ath3k_switch_pid(udev);
 535                 return 0;
 536         }
 537
 538         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 539         if (ret < 0) {
 540                 if (ret == -ENOENT)
 541                         BT_ERR("Firmware file \"%s\" not found",
 542                                                         ATH3K_FIRMWARE);
 543                 else
 544                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 545                                                         ATH3K_FIRMWARE, ret);
 546                 return ret;
 547         }
 548
 549         ret = ath3k_load_firmware(udev, firmware);
 550         release_firmware(firmware);
 551
 552         return ret;
 553 }
 554
 555 static void ath3k_disconnect(struct usb_interface *intf)
 556 {
 557         BT_DBG("ath3k_disconnect intf %p", intf);
 558 }
 559
 560 static struct usb_driver ath3k_driver = {
 561         .name           = "ath3k",
 562         .probe          = ath3k_probe,
 563         .disconnect     = ath3k_disconnect,
 564         .id_table       = ath3k_table,
 565         .disable_hub_initiated_lpm = 1,
 566 };
 567
 568 module_usb_driver(ath3k_driver);
 569
 570 MODULE_AUTHOR("Atheros Communications");
 571 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 572 MODULE_VERSION(VERSION);
 573 MODULE_LICENSE("GPL");
 574 MODULE_FIRMWARE(ATH3K_FIRMWARE);