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