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