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(0x04CA, 0x3018) },
  98         { USB_DEVICE(0x0930, 0x0219) },
  99         { USB_DEVICE(0x0930, 0x021c) },
 100         { USB_DEVICE(0x0930, 0x0220) },
 101         { USB_DEVICE(0x0930, 0x0227) },
 102         { USB_DEVICE(0x0b05, 0x17d0) },
 103         { USB_DEVICE(0x0CF3, 0x0036) },
 104         { USB_DEVICE(0x0CF3, 0x3004) },
 105         { USB_DEVICE(0x0CF3, 0x3008) },
 106         { USB_DEVICE(0x0CF3, 0x311D) },
 107         { USB_DEVICE(0x0CF3, 0x311E) },
 108         { USB_DEVICE(0x0CF3, 0x311F) },
 109         { USB_DEVICE(0x0cf3, 0x3121) },
 110         { USB_DEVICE(0x0CF3, 0x817a) },
 111         { USB_DEVICE(0x0CF3, 0x817b) },
 112         { USB_DEVICE(0x0cf3, 0xe003) },
 113         { USB_DEVICE(0x0CF3, 0xE004) },
 114         { USB_DEVICE(0x0CF3, 0xE005) },
 115         { USB_DEVICE(0x0CF3, 0xE006) },
 116         { USB_DEVICE(0x13d3, 0x3362) },
 117         { USB_DEVICE(0x13d3, 0x3375) },
 118         { USB_DEVICE(0x13d3, 0x3393) },
 119         { USB_DEVICE(0x13d3, 0x3395) },
 120         { USB_DEVICE(0x13d3, 0x3402) },
 121         { USB_DEVICE(0x13d3, 0x3408) },
 122         { USB_DEVICE(0x13d3, 0x3423) },
 123         { USB_DEVICE(0x13d3, 0x3432) },
 124         { USB_DEVICE(0x13d3, 0x3472) },
 125         { USB_DEVICE(0x13d3, 0x3474) },
 126         { USB_DEVICE(0x13d3, 0x3487) },
 127         { USB_DEVICE(0x13d3, 0x3490) },
 128
 129         /* Atheros AR5BBU12 with sflash firmware */
 130         { USB_DEVICE(0x0489, 0xE02C) },
 131
 132         /* Atheros AR5BBU22 with sflash firmware */
 133         { USB_DEVICE(0x0489, 0xE036) },
 134         { USB_DEVICE(0x0489, 0xE03C) },
 135
 136         { }     /* Terminating entry */
 137 };
 138
 139 MODULE_DEVICE_TABLE(usb, ath3k_table);
 140
 141 #define BTUSB_ATH3012           0x80
 142 /* This table is to load patch and sysconfig files
 143  * for AR3012 */
 144 static const struct usb_device_id ath3k_blist_tbl[] = {
 145
 146         /* Atheros AR3012 with sflash firmware*/
 147         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 197
 198         /* Atheros AR5BBU22 with sflash firmware */
 199         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 201
 202         { }     /* Terminating entry */
 203 };
 204
 205 #define USB_REQ_DFU_DNLOAD      1
 206 #define BULK_SIZE               4096
 207 #define FW_HDR_SIZE             20
 208 #define TIMEGAP_USEC_MIN        50
 209 #define TIMEGAP_USEC_MAX        100
 210
 211 static int ath3k_load_firmware(struct usb_device *udev,
 212                                 const struct firmware *firmware)
 213 {
 214         u8 *send_buf;
 215         int len = 0;
 216         int err, pipe, size, sent = 0;
 217         int count = firmware->size;
 218
 219         BT_DBG("udev %p", udev);
 220
 221         pipe = usb_sndctrlpipe(udev, 0);
 222
 223         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 224         if (!send_buf) {
 225                 BT_ERR("Can't allocate memory chunk for firmware");
 226                 return -ENOMEM;
 227         }
 228
 229         memcpy(send_buf, firmware->data, 20);
 230         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 231                               0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
 232         if (err < 0) {
 233                 BT_ERR("Can't change to loading configuration err");
 234                 goto error;
 235         }
 236         sent += 20;
 237         count -= 20;
 238
 239         pipe = usb_sndbulkpipe(udev, 0x02);
 240
 241         while (count) {
 242                 /* workaround the compatibility issue with xHCI controller*/
 243                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 244
 245                 size = min_t(uint, count, BULK_SIZE);
 246                 memcpy(send_buf, firmware->data + sent, size);
 247
 248                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 249                                         &len, 3000);
 250
 251                 if (err || (len != size)) {
 252                         BT_ERR("Error in firmware loading err = %d,"
 253                                 "len = %d, size = %d", err, len, size);
 254                         goto error;
 255                 }
 256
 257                 sent  += size;
 258                 count -= size;
 259         }
 260
 261 error:
 262         kfree(send_buf);
 263         return err;
 264 }
 265
 266 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 267 {
 268         int ret, pipe = 0;
 269         char *buf;
 270
 271         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 272         if (!buf)
 273                 return -ENOMEM;
 274
 275         pipe = usb_rcvctrlpipe(udev, 0);
 276         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 277                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 278                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 279
 280         *state = *buf;
 281         kfree(buf);
 282
 283         return ret;
 284 }
 285
 286 static int ath3k_get_version(struct usb_device *udev,
 287                         struct ath3k_version *version)
 288 {
 289         int ret, pipe = 0;
 290         struct ath3k_version *buf;
 291         const int size = sizeof(*buf);
 292
 293         buf = kmalloc(size, GFP_KERNEL);
 294         if (!buf)
 295                 return -ENOMEM;
 296
 297         pipe = usb_rcvctrlpipe(udev, 0);
 298         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 299                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 300                               buf, size, USB_CTRL_SET_TIMEOUT);
 301
 302         memcpy(version, buf, size);
 303         kfree(buf);
 304
 305         return ret;
 306 }
 307
 308 static int ath3k_load_fwfile(struct usb_device *udev,
 309                 const struct firmware *firmware)
 310 {
 311         u8 *send_buf;
 312         int len = 0;
 313         int err, pipe, size, count, sent = 0;
 314         int ret;
 315
 316         count = firmware->size;
 317
 318         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 319         if (!send_buf) {
 320                 BT_ERR("Can't allocate memory chunk for firmware");
 321                 return -ENOMEM;
 322         }
 323
 324         size = min_t(uint, count, FW_HDR_SIZE);
 325         memcpy(send_buf, firmware->data, size);
 326
 327         pipe = usb_sndctrlpipe(udev, 0);
 328         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 329                         USB_TYPE_VENDOR, 0, 0, send_buf,
 330                         size, USB_CTRL_SET_TIMEOUT);
 331         if (ret < 0) {
 332                 BT_ERR("Can't change to loading configuration err");
 333                 kfree(send_buf);
 334                 return ret;
 335         }
 336
 337         sent += size;
 338         count -= size;
 339
 340         pipe = usb_sndbulkpipe(udev, 0x02);
 341
 342         while (count) {
 343                 /* workaround the compatibility issue with xHCI controller*/
 344                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 345
 346                 size = min_t(uint, count, BULK_SIZE);
 347                 memcpy(send_buf, firmware->data + sent, size);
 348
 349                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 350                                         &len, 3000);
 351                 if (err || (len != size)) {
 352                         BT_ERR("Error in firmware loading err = %d,"
 353                                 "len = %d, size = %d", err, len, size);
 354                         kfree(send_buf);
 355                         return err;
 356                 }
 357                 sent  += size;
 358                 count -= size;
 359         }
 360
 361         kfree(send_buf);
 362         return 0;
 363 }
 364
 365 static int ath3k_switch_pid(struct usb_device *udev)
 366 {
 367         int pipe = 0;
 368
 369         pipe = usb_sndctrlpipe(udev, 0);
 370         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 371                         USB_TYPE_VENDOR, 0, 0,
 372                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 373 }
 374
 375 static int ath3k_set_normal_mode(struct usb_device *udev)
 376 {
 377         unsigned char fw_state;
 378         int pipe = 0, ret;
 379
 380         ret = ath3k_get_state(udev, &fw_state);
 381         if (ret < 0) {
 382                 BT_ERR("Can't get state to change to normal mode err");
 383                 return ret;
 384         }
 385
 386         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 387                 BT_DBG("firmware was already in normal mode");
 388                 return 0;
 389         }
 390
 391         pipe = usb_sndctrlpipe(udev, 0);
 392         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 393                         USB_TYPE_VENDOR, 0, 0,
 394                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 395 }
 396
 397 static int ath3k_load_patch(struct usb_device *udev)
 398 {
 399         unsigned char fw_state;
 400         char filename[ATH3K_NAME_LEN] = {0};
 401         const struct firmware *firmware;
 402         struct ath3k_version fw_version;
 403         __u32 pt_rom_version, pt_build_version;
 404         int ret;
 405
 406         ret = ath3k_get_state(udev, &fw_state);
 407         if (ret < 0) {
 408                 BT_ERR("Can't get state to change to load ram patch err");
 409                 return ret;
 410         }
 411
 412         if (fw_state & ATH3K_PATCH_UPDATE) {
 413                 BT_DBG("Patch was already downloaded");
 414                 return 0;
 415         }
 416
 417         ret = ath3k_get_version(udev, &fw_version);
 418         if (ret < 0) {
 419                 BT_ERR("Can't get version to change to load ram patch err");
 420                 return ret;
 421         }
 422
 423         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 424                  le32_to_cpu(fw_version.rom_version));
 425
 426         ret = request_firmware(&firmware, filename, &udev->dev);
 427         if (ret < 0) {
 428                 BT_ERR("Patch file not found %s", filename);
 429                 return ret;
 430         }
 431
 432         pt_rom_version = get_unaligned_le32(firmware->data +
 433                                             firmware->size - 8);
 434         pt_build_version = get_unaligned_le32(firmware->data +
 435                                               firmware->size - 4);
 436
 437         if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
 438             pt_build_version <= le32_to_cpu(fw_version.build_version)) {
 439                 BT_ERR("Patch file version did not match with firmware");
 440                 release_firmware(firmware);
 441                 return -EINVAL;
 442         }
 443
 444         ret = ath3k_load_fwfile(udev, firmware);
 445         release_firmware(firmware);
 446
 447         return ret;
 448 }
 449
 450 static int ath3k_load_syscfg(struct usb_device *udev)
 451 {
 452         unsigned char fw_state;
 453         char filename[ATH3K_NAME_LEN] = {0};
 454         const struct firmware *firmware;
 455         struct ath3k_version fw_version;
 456         int clk_value, ret;
 457
 458         ret = ath3k_get_state(udev, &fw_state);
 459         if (ret < 0) {
 460                 BT_ERR("Can't get state to change to load configuration err");
 461                 return -EBUSY;
 462         }
 463
 464         ret = ath3k_get_version(udev, &fw_version);
 465         if (ret < 0) {
 466                 BT_ERR("Can't get version to change to load ram patch err");
 467                 return ret;
 468         }
 469
 470         switch (fw_version.ref_clock) {
 471
 472         case ATH3K_XTAL_FREQ_26M:
 473                 clk_value = 26;
 474                 break;
 475         case ATH3K_XTAL_FREQ_40M:
 476                 clk_value = 40;
 477                 break;
 478         case ATH3K_XTAL_FREQ_19P2:
 479                 clk_value = 19;
 480                 break;
 481         default:
 482                 clk_value = 0;
 483                 break;
 484         }
 485
 486         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 487                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 488
 489         ret = request_firmware(&firmware, filename, &udev->dev);
 490         if (ret < 0) {
 491                 BT_ERR("Configuration file not found %s", filename);
 492                 return ret;
 493         }
 494
 495         ret = ath3k_load_fwfile(udev, firmware);
 496         release_firmware(firmware);
 497
 498         return ret;
 499 }
 500
 501 static int ath3k_probe(struct usb_interface *intf,
 502                         const struct usb_device_id *id)
 503 {
 504         const struct firmware *firmware;
 505         struct usb_device *udev = interface_to_usbdev(intf);
 506         int ret;
 507
 508         BT_DBG("intf %p id %p", intf, id);
 509
 510         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 511                 return -ENODEV;
 512
 513         /* match device ID in ath3k blacklist table */
 514         if (!id->driver_info) {
 515                 const struct usb_device_id *match;
 516
 517                 match = usb_match_id(intf, ath3k_blist_tbl);
 518                 if (match)
 519                         id = match;
 520         }
 521
 522         /* load patch and sysconfig files for AR3012 */
 523         if (id->driver_info & BTUSB_ATH3012) {
 524
 525                 /* New firmware with patch and sysconfig files already loaded */
 526                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 527                         return -ENODEV;
 528
 529                 ret = ath3k_load_patch(udev);
 530                 if (ret < 0) {
 531                         BT_ERR("Loading patch file failed");
 532                         return ret;
 533                 }
 534                 ret = ath3k_load_syscfg(udev);
 535                 if (ret < 0) {
 536                         BT_ERR("Loading sysconfig file failed");
 537                         return ret;
 538                 }
 539                 ret = ath3k_set_normal_mode(udev);
 540                 if (ret < 0) {
 541                         BT_ERR("Set normal mode failed");
 542                         return ret;
 543                 }
 544                 ath3k_switch_pid(udev);
 545                 return 0;
 546         }
 547
 548         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 549         if (ret < 0) {
 550                 if (ret == -ENOENT)
 551                         BT_ERR("Firmware file \"%s\" not found",
 552                                                         ATH3K_FIRMWARE);
 553                 else
 554                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 555                                                         ATH3K_FIRMWARE, ret);
 556                 return ret;
 557         }
 558
 559         ret = ath3k_load_firmware(udev, firmware);
 560         release_firmware(firmware);
 561
 562         return ret;
 563 }
 564
 565 static void ath3k_disconnect(struct usb_interface *intf)
 566 {
 567         BT_DBG("ath3k_disconnect intf %p", intf);
 568 }
 569
 570 static struct usb_driver ath3k_driver = {
 571         .name           = "ath3k",
 572         .probe          = ath3k_probe,
 573         .disconnect     = ath3k_disconnect,
 574         .id_table       = ath3k_table,
 575         .disable_hub_initiated_lpm = 1,
 576 };
 577
 578 module_usb_driver(ath3k_driver);
 579
 580 MODULE_AUTHOR("Atheros Communications");
 581 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 582 MODULE_VERSION(VERSION);
 583 MODULE_LICENSE("GPL");
 584 MODULE_FIRMWARE(ATH3K_FIRMWARE);