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, 0x3472) },
 124         { USB_DEVICE(0x13d3, 0x3474) },
 125
 126         /* Atheros AR5BBU12 with sflash firmware */
 127         { USB_DEVICE(0x0489, 0xE02C) },
 128
 129         /* Atheros AR5BBU22 with sflash firmware */
 130         { USB_DEVICE(0x0489, 0xE036) },
 131         { USB_DEVICE(0x0489, 0xE03C) },
 132
 133         { }     /* Terminating entry */
 134 };
 135
 136 MODULE_DEVICE_TABLE(usb, ath3k_table);
 137
 138 #define BTUSB_ATH3012           0x80
 139 /* This table is to load patch and sysconfig files
 140  * for AR3012 */
 141 static const struct usb_device_id ath3k_blist_tbl[] = {
 142
 143         /* Atheros AR3012 with sflash firmware*/
 144         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 191
 192         /* Atheros AR5BBU22 with sflash firmware */
 193         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 195
 196         { }     /* Terminating entry */
 197 };
 198
 199 #define USB_REQ_DFU_DNLOAD      1
 200 #define BULK_SIZE               4096
 201 #define FW_HDR_SIZE             20
 202 #define TIMEGAP_USEC_MIN        50
 203 #define TIMEGAP_USEC_MAX        100
 204
 205 static int ath3k_load_firmware(struct usb_device *udev,
 206                                 const struct firmware *firmware)
 207 {
 208         u8 *send_buf;
 209         int len = 0;
 210         int err, pipe, size, sent = 0;
 211         int count = firmware->size;
 212
 213         BT_DBG("udev %p", udev);
 214
 215         pipe = usb_sndctrlpipe(udev, 0);
 216
 217         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 218         if (!send_buf) {
 219                 BT_ERR("Can't allocate memory chunk for firmware");
 220                 return -ENOMEM;
 221         }
 222
 223         memcpy(send_buf, firmware->data, 20);
 224         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 225                               0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
 226         if (err < 0) {
 227                 BT_ERR("Can't change to loading configuration err");
 228                 goto error;
 229         }
 230         sent += 20;
 231         count -= 20;
 232
 233         pipe = usb_sndbulkpipe(udev, 0x02);
 234
 235         while (count) {
 236                 /* workaround the compatibility issue with xHCI controller*/
 237                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 238
 239                 size = min_t(uint, count, BULK_SIZE);
 240                 memcpy(send_buf, firmware->data + sent, size);
 241
 242                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 243                                         &len, 3000);
 244
 245                 if (err || (len != size)) {
 246                         BT_ERR("Error in firmware loading err = %d,"
 247                                 "len = %d, size = %d", err, len, size);
 248                         goto error;
 249                 }
 250
 251                 sent  += size;
 252                 count -= size;
 253         }
 254
 255 error:
 256         kfree(send_buf);
 257         return err;
 258 }
 259
 260 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 261 {
 262         int ret, pipe = 0;
 263         char *buf;
 264
 265         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 266         if (!buf)
 267                 return -ENOMEM;
 268
 269         pipe = usb_rcvctrlpipe(udev, 0);
 270         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 271                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 272                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 273
 274         *state = *buf;
 275         kfree(buf);
 276
 277         return ret;
 278 }
 279
 280 static int ath3k_get_version(struct usb_device *udev,
 281                         struct ath3k_version *version)
 282 {
 283         int ret, pipe = 0;
 284         struct ath3k_version *buf;
 285         const int size = sizeof(*buf);
 286
 287         buf = kmalloc(size, GFP_KERNEL);
 288         if (!buf)
 289                 return -ENOMEM;
 290
 291         pipe = usb_rcvctrlpipe(udev, 0);
 292         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 293                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 294                               buf, size, USB_CTRL_SET_TIMEOUT);
 295
 296         memcpy(version, buf, size);
 297         kfree(buf);
 298
 299         return ret;
 300 }
 301
 302 static int ath3k_load_fwfile(struct usb_device *udev,
 303                 const struct firmware *firmware)
 304 {
 305         u8 *send_buf;
 306         int len = 0;
 307         int err, pipe, size, count, sent = 0;
 308         int ret;
 309
 310         count = firmware->size;
 311
 312         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 313         if (!send_buf) {
 314                 BT_ERR("Can't allocate memory chunk for firmware");
 315                 return -ENOMEM;
 316         }
 317
 318         size = min_t(uint, count, FW_HDR_SIZE);
 319         memcpy(send_buf, firmware->data, size);
 320
 321         pipe = usb_sndctrlpipe(udev, 0);
 322         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 323                         USB_TYPE_VENDOR, 0, 0, send_buf,
 324                         size, USB_CTRL_SET_TIMEOUT);
 325         if (ret < 0) {
 326                 BT_ERR("Can't change to loading configuration err");
 327                 kfree(send_buf);
 328                 return ret;
 329         }
 330
 331         sent += size;
 332         count -= size;
 333
 334         pipe = usb_sndbulkpipe(udev, 0x02);
 335
 336         while (count) {
 337                 /* workaround the compatibility issue with xHCI controller*/
 338                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 339
 340                 size = min_t(uint, count, BULK_SIZE);
 341                 memcpy(send_buf, firmware->data + sent, size);
 342
 343                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 344                                         &len, 3000);
 345                 if (err || (len != size)) {
 346                         BT_ERR("Error in firmware loading err = %d,"
 347                                 "len = %d, size = %d", err, len, size);
 348                         kfree(send_buf);
 349                         return err;
 350                 }
 351                 sent  += size;
 352                 count -= size;
 353         }
 354
 355         kfree(send_buf);
 356         return 0;
 357 }
 358
 359 static int ath3k_switch_pid(struct usb_device *udev)
 360 {
 361         int pipe = 0;
 362
 363         pipe = usb_sndctrlpipe(udev, 0);
 364         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 365                         USB_TYPE_VENDOR, 0, 0,
 366                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 367 }
 368
 369 static int ath3k_set_normal_mode(struct usb_device *udev)
 370 {
 371         unsigned char fw_state;
 372         int pipe = 0, ret;
 373
 374         ret = ath3k_get_state(udev, &fw_state);
 375         if (ret < 0) {
 376                 BT_ERR("Can't get state to change to normal mode err");
 377                 return ret;
 378         }
 379
 380         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 381                 BT_DBG("firmware was already in normal mode");
 382                 return 0;
 383         }
 384
 385         pipe = usb_sndctrlpipe(udev, 0);
 386         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 387                         USB_TYPE_VENDOR, 0, 0,
 388                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 389 }
 390
 391 static int ath3k_load_patch(struct usb_device *udev)
 392 {
 393         unsigned char fw_state;
 394         char filename[ATH3K_NAME_LEN] = {0};
 395         const struct firmware *firmware;
 396         struct ath3k_version fw_version;
 397         __u32 pt_rom_version, pt_build_version;
 398         int ret;
 399
 400         ret = ath3k_get_state(udev, &fw_state);
 401         if (ret < 0) {
 402                 BT_ERR("Can't get state to change to load ram patch err");
 403                 return ret;
 404         }
 405
 406         if (fw_state & ATH3K_PATCH_UPDATE) {
 407                 BT_DBG("Patch was already downloaded");
 408                 return 0;
 409         }
 410
 411         ret = ath3k_get_version(udev, &fw_version);
 412         if (ret < 0) {
 413                 BT_ERR("Can't get version to change to load ram patch err");
 414                 return ret;
 415         }
 416
 417         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 418                  le32_to_cpu(fw_version.rom_version));
 419
 420         ret = request_firmware(&firmware, filename, &udev->dev);
 421         if (ret < 0) {
 422                 BT_ERR("Patch file not found %s", filename);
 423                 return ret;
 424         }
 425
 426         pt_rom_version = get_unaligned_le32(firmware->data +
 427                                             firmware->size - 8);
 428         pt_build_version = get_unaligned_le32(firmware->data +
 429                                               firmware->size - 4);
 430
 431         if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
 432             pt_build_version <= le32_to_cpu(fw_version.build_version)) {
 433                 BT_ERR("Patch file version did not match with firmware");
 434                 release_firmware(firmware);
 435                 return -EINVAL;
 436         }
 437
 438         ret = ath3k_load_fwfile(udev, firmware);
 439         release_firmware(firmware);
 440
 441         return ret;
 442 }
 443
 444 static int ath3k_load_syscfg(struct usb_device *udev)
 445 {
 446         unsigned char fw_state;
 447         char filename[ATH3K_NAME_LEN] = {0};
 448         const struct firmware *firmware;
 449         struct ath3k_version fw_version;
 450         int clk_value, ret;
 451
 452         ret = ath3k_get_state(udev, &fw_state);
 453         if (ret < 0) {
 454                 BT_ERR("Can't get state to change to load configuration err");
 455                 return -EBUSY;
 456         }
 457
 458         ret = ath3k_get_version(udev, &fw_version);
 459         if (ret < 0) {
 460                 BT_ERR("Can't get version to change to load ram patch err");
 461                 return ret;
 462         }
 463
 464         switch (fw_version.ref_clock) {
 465
 466         case ATH3K_XTAL_FREQ_26M:
 467                 clk_value = 26;
 468                 break;
 469         case ATH3K_XTAL_FREQ_40M:
 470                 clk_value = 40;
 471                 break;
 472         case ATH3K_XTAL_FREQ_19P2:
 473                 clk_value = 19;
 474                 break;
 475         default:
 476                 clk_value = 0;
 477                 break;
 478         }
 479
 480         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 481                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 482
 483         ret = request_firmware(&firmware, filename, &udev->dev);
 484         if (ret < 0) {
 485                 BT_ERR("Configuration file not found %s", filename);
 486                 return ret;
 487         }
 488
 489         ret = ath3k_load_fwfile(udev, firmware);
 490         release_firmware(firmware);
 491
 492         return ret;
 493 }
 494
 495 static int ath3k_probe(struct usb_interface *intf,
 496                         const struct usb_device_id *id)
 497 {
 498         const struct firmware *firmware;
 499         struct usb_device *udev = interface_to_usbdev(intf);
 500         int ret;
 501
 502         BT_DBG("intf %p id %p", intf, id);
 503
 504         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 505                 return -ENODEV;
 506
 507         /* match device ID in ath3k blacklist table */
 508         if (!id->driver_info) {
 509                 const struct usb_device_id *match;
 510
 511                 match = usb_match_id(intf, ath3k_blist_tbl);
 512                 if (match)
 513                         id = match;
 514         }
 515
 516         /* load patch and sysconfig files for AR3012 */
 517         if (id->driver_info & BTUSB_ATH3012) {
 518
 519                 /* New firmware with patch and sysconfig files already loaded */
 520                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 521                         return -ENODEV;
 522
 523                 ret = ath3k_load_patch(udev);
 524                 if (ret < 0) {
 525                         BT_ERR("Loading patch file failed");
 526                         return ret;
 527                 }
 528                 ret = ath3k_load_syscfg(udev);
 529                 if (ret < 0) {
 530                         BT_ERR("Loading sysconfig file failed");
 531                         return ret;
 532                 }
 533                 ret = ath3k_set_normal_mode(udev);
 534                 if (ret < 0) {
 535                         BT_ERR("Set normal mode failed");
 536                         return ret;
 537                 }
 538                 ath3k_switch_pid(udev);
 539                 return 0;
 540         }
 541
 542         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 543         if (ret < 0) {
 544                 if (ret == -ENOENT)
 545                         BT_ERR("Firmware file \"%s\" not found",
 546                                                         ATH3K_FIRMWARE);
 547                 else
 548                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 549                                                         ATH3K_FIRMWARE, ret);
 550                 return ret;
 551         }
 552
 553         ret = ath3k_load_firmware(udev, firmware);
 554         release_firmware(firmware);
 555
 556         return ret;
 557 }
 558
 559 static void ath3k_disconnect(struct usb_interface *intf)
 560 {
 561         BT_DBG("ath3k_disconnect intf %p", intf);
 562 }
 563
 564 static struct usb_driver ath3k_driver = {
 565         .name           = "ath3k",
 566         .probe          = ath3k_probe,
 567         .disconnect     = ath3k_disconnect,
 568         .id_table       = ath3k_table,
 569         .disable_hub_initiated_lpm = 1,
 570 };
 571
 572 module_usb_driver(ath3k_driver);
 573
 574 MODULE_AUTHOR("Atheros Communications");
 575 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 576 MODULE_VERSION(VERSION);
 577 MODULE_LICENSE("GPL");
 578 MODULE_FIRMWARE(ATH3K_FIRMWARE);