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