drivers/bluetooth/ath3k.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2008-2009 Atheros Communications Inc.
   4  */
   5
   6
   7 #include <linux/module.h>
   8 #include <linux/kernel.h>
   9 #include <linux/init.h>
  10 #include <linux/slab.h>
  11 #include <linux/types.h>
  12 #include <linux/errno.h>
  13 #include <linux/device.h>
  14 #include <linux/firmware.h>
  15 #include <linux/usb.h>
  16 #include <asm/unaligned.h>
  17 #include <net/bluetooth/bluetooth.h>
  18
  19 #define VERSION "1.0"
  20 #define ATH3K_FIRMWARE  "ath3k-1.fw"
  21
  22 #define ATH3K_DNLOAD                            0x01
  23 #define ATH3K_GETSTATE                          0x05
  24 #define ATH3K_SET_NORMAL_MODE                   0x07
  25 #define ATH3K_GETVERSION                        0x09
  26 #define USB_REG_SWITCH_VID_PID                  0x0a
  27
  28 #define ATH3K_MODE_MASK                         0x3F
  29 #define ATH3K_NORMAL_MODE                       0x0E
  30
  31 #define ATH3K_PATCH_UPDATE                      0x80
  32 #define ATH3K_SYSCFG_UPDATE                     0x40
  33
  34 #define ATH3K_XTAL_FREQ_26M                     0x00
  35 #define ATH3K_XTAL_FREQ_40M                     0x01
  36 #define ATH3K_XTAL_FREQ_19P2                    0x02
  37 #define ATH3K_NAME_LEN                          0xFF
  38
  39 struct ath3k_version {
  40         __le32  rom_version;
  41         __le32  build_version;
  42         __le32  ram_version;
  43         __u8    ref_clock;
  44         __u8    reserved[7];
  45 } __packed;
  46
  47 static const struct usb_device_id ath3k_table[] = {
  48         /* Atheros AR3011 */
  49         { USB_DEVICE(0x0CF3, 0x3000) },
  50
  51         /* Atheros AR3011 with sflash firmware*/
  52         { USB_DEVICE(0x0489, 0xE027) },
  53         { USB_DEVICE(0x0489, 0xE03D) },
  54         { USB_DEVICE(0x04F2, 0xAFF1) },
  55         { USB_DEVICE(0x0930, 0x0215) },
  56         { USB_DEVICE(0x0CF3, 0x3002) },
  57         { USB_DEVICE(0x0CF3, 0xE019) },
  58         { USB_DEVICE(0x13d3, 0x3304) },
  59
  60         /* Atheros AR9285 Malbec with sflash firmware */
  61         { USB_DEVICE(0x03F0, 0x311D) },
  62
  63         /* Atheros AR3012 with sflash firmware*/
  64         { USB_DEVICE(0x0489, 0xe04d) },
  65         { USB_DEVICE(0x0489, 0xe04e) },
  66         { USB_DEVICE(0x0489, 0xe057) },
  67         { USB_DEVICE(0x0489, 0xe056) },
  68         { USB_DEVICE(0x0489, 0xe05f) },
  69         { USB_DEVICE(0x0489, 0xe076) },
  70         { USB_DEVICE(0x0489, 0xe078) },
  71         { USB_DEVICE(0x0489, 0xe095) },
  72         { USB_DEVICE(0x04c5, 0x1330) },
  73         { USB_DEVICE(0x04CA, 0x3004) },
  74         { USB_DEVICE(0x04CA, 0x3005) },
  75         { USB_DEVICE(0x04CA, 0x3006) },
  76         { USB_DEVICE(0x04CA, 0x3007) },
  77         { USB_DEVICE(0x04CA, 0x3008) },
  78         { USB_DEVICE(0x04CA, 0x300b) },
  79         { USB_DEVICE(0x04CA, 0x300d) },
  80         { USB_DEVICE(0x04CA, 0x300f) },
  81         { USB_DEVICE(0x04CA, 0x3010) },
  82         { USB_DEVICE(0x04CA, 0x3014) },
  83         { USB_DEVICE(0x04CA, 0x3018) },
  84         { USB_DEVICE(0x0930, 0x0219) },
  85         { USB_DEVICE(0x0930, 0x021c) },
  86         { USB_DEVICE(0x0930, 0x0220) },
  87         { USB_DEVICE(0x0930, 0x0227) },
  88         { USB_DEVICE(0x0b05, 0x17d0) },
  89         { USB_DEVICE(0x0CF3, 0x0036) },
  90         { USB_DEVICE(0x0CF3, 0x3004) },
  91         { USB_DEVICE(0x0CF3, 0x3008) },
  92         { USB_DEVICE(0x0CF3, 0x311D) },
  93         { USB_DEVICE(0x0CF3, 0x311E) },
  94         { USB_DEVICE(0x0CF3, 0x311F) },
  95         { USB_DEVICE(0x0cf3, 0x3121) },
  96         { USB_DEVICE(0x0CF3, 0x817a) },
  97         { USB_DEVICE(0x0CF3, 0x817b) },
  98         { USB_DEVICE(0x0cf3, 0xe003) },
  99         { USB_DEVICE(0x0CF3, 0xE004) },
 100         { USB_DEVICE(0x0CF3, 0xE005) },
 101         { USB_DEVICE(0x0CF3, 0xE006) },
 102         { USB_DEVICE(0x13d3, 0x3362) },
 103         { USB_DEVICE(0x13d3, 0x3375) },
 104         { USB_DEVICE(0x13d3, 0x3393) },
 105         { USB_DEVICE(0x13d3, 0x3395) },
 106         { USB_DEVICE(0x13d3, 0x3402) },
 107         { USB_DEVICE(0x13d3, 0x3408) },
 108         { USB_DEVICE(0x13d3, 0x3423) },
 109         { USB_DEVICE(0x13d3, 0x3432) },
 110         { USB_DEVICE(0x13d3, 0x3472) },
 111         { USB_DEVICE(0x13d3, 0x3474) },
 112         { USB_DEVICE(0x13d3, 0x3487) },
 113         { USB_DEVICE(0x13d3, 0x3490) },
 114
 115         /* Atheros AR5BBU12 with sflash firmware */
 116         { USB_DEVICE(0x0489, 0xE02C) },
 117
 118         /* Atheros AR5BBU22 with sflash firmware */
 119         { USB_DEVICE(0x0489, 0xE036) },
 120         { USB_DEVICE(0x0489, 0xE03C) },
 121
 122         { }     /* Terminating entry */
 123 };
 124
 125 MODULE_DEVICE_TABLE(usb, ath3k_table);
 126
 127 #define BTUSB_ATH3012           0x80
 128 /* This table is to load patch and sysconfig files
 129  * for AR3012
 130  */
 131 static const struct usb_device_id ath3k_blist_tbl[] = {
 132
 133         /* Atheros AR3012 with sflash firmware*/
 134         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 136         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 139         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 184
 185         /* Atheros AR5BBU22 with sflash firmware */
 186         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 188
 189         { }     /* Terminating entry */
 190 };
 191
 192 static inline void ath3k_log_failed_loading(int err, int len, int size,
 193                                             int count)
 194 {
 195         BT_ERR("Firmware loading err = %d, len = %d, size = %d, count = %d",
 196                err, len, size, count);
 197 }
 198
 199 #define USB_REQ_DFU_DNLOAD      1
 200 #define BULK_SIZE               4096
 201 #define FW_HDR_SIZE             20
 202 #define TIMEGAP_USEC_MIN        50
 203 #define TIMEGAP_USEC_MAX        100
 204
 205 static int ath3k_load_firmware(struct usb_device *udev,
 206                                 const struct firmware *firmware)
 207 {
 208         u8 *send_buf;
 209         int len = 0;
 210         int err, pipe, size, sent = 0;
 211         int count = firmware->size;
 212
 213         BT_DBG("udev %p", udev);
 214
 215         pipe = usb_sndctrlpipe(udev, 0);
 216
 217         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 218         if (!send_buf) {
 219                 BT_ERR("Can't allocate memory chunk for firmware");
 220                 return -ENOMEM;
 221         }
 222
 223         memcpy(send_buf, firmware->data, FW_HDR_SIZE);
 224         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 225                               0, 0, send_buf, FW_HDR_SIZE,
 226                               USB_CTRL_SET_TIMEOUT);
 227         if (err < 0) {
 228                 BT_ERR("Can't change to loading configuration err");
 229                 goto error;
 230         }
 231         sent += FW_HDR_SIZE;
 232         count -= FW_HDR_SIZE;
 233
 234         pipe = usb_sndbulkpipe(udev, 0x02);
 235
 236         while (count) {
 237                 /* workaround the compatibility issue with xHCI controller*/
 238                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 239
 240                 size = min_t(uint, count, BULK_SIZE);
 241                 memcpy(send_buf, firmware->data + sent, size);
 242
 243                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 244                                         &len, 3000);
 245
 246                 if (err || (len != size)) {
 247                         ath3k_log_failed_loading(err, len, size, count);
 248                         goto error;
 249                 }
 250
 251                 sent  += size;
 252                 count -= size;
 253         }
 254
 255 error:
 256         kfree(send_buf);
 257         return err;
 258 }
 259
 260 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 261 {
 262         int ret, pipe = 0;
 263         char *buf;
 264
 265         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 266         if (!buf)
 267                 return -ENOMEM;
 268
 269         pipe = usb_rcvctrlpipe(udev, 0);
 270         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 271                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 272                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 273
 274         *state = *buf;
 275         kfree(buf);
 276
 277         return ret;
 278 }
 279
 280 static int ath3k_get_version(struct usb_device *udev,
 281                         struct ath3k_version *version)
 282 {
 283         int ret, pipe = 0;
 284         struct ath3k_version *buf;
 285         const int size = sizeof(*buf);
 286
 287         buf = kmalloc(size, GFP_KERNEL);
 288         if (!buf)
 289                 return -ENOMEM;
 290
 291         pipe = usb_rcvctrlpipe(udev, 0);
 292         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 293                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 294                               buf, size, USB_CTRL_SET_TIMEOUT);
 295
 296         memcpy(version, buf, size);
 297         kfree(buf);
 298
 299         return ret;
 300 }
 301
 302 static int ath3k_load_fwfile(struct usb_device *udev,
 303                 const struct firmware *firmware)
 304 {
 305         u8 *send_buf;
 306         int len = 0;
 307         int err, pipe, size, count, sent = 0;
 308         int ret;
 309
 310         count = firmware->size;
 311
 312         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 313         if (!send_buf) {
 314                 BT_ERR("Can't allocate memory chunk for firmware");
 315                 return -ENOMEM;
 316         }
 317
 318         size = min_t(uint, count, FW_HDR_SIZE);
 319         memcpy(send_buf, firmware->data, size);
 320
 321         pipe = usb_sndctrlpipe(udev, 0);
 322         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 323                         USB_TYPE_VENDOR, 0, 0, send_buf,
 324                         size, USB_CTRL_SET_TIMEOUT);
 325         if (ret < 0) {
 326                 BT_ERR("Can't change to loading configuration err");
 327                 kfree(send_buf);
 328                 return ret;
 329         }
 330
 331         sent += size;
 332         count -= size;
 333
 334         pipe = usb_sndbulkpipe(udev, 0x02);
 335
 336         while (count) {
 337                 /* workaround the compatibility issue with xHCI controller*/
 338                 usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
 339
 340                 size = min_t(uint, count, BULK_SIZE);
 341                 memcpy(send_buf, firmware->data + sent, size);
 342
 343                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 344                                         &len, 3000);
 345                 if (err || (len != size)) {
 346                         ath3k_log_failed_loading(err, len, size, count);
 347                         kfree(send_buf);
 348                         return err;
 349                 }
 350                 sent  += size;
 351                 count -= size;
 352         }
 353
 354         kfree(send_buf);
 355         return 0;
 356 }
 357
 358 static int ath3k_switch_pid(struct usb_device *udev)
 359 {
 360         int pipe = 0;
 361
 362         pipe = usb_sndctrlpipe(udev, 0);
 363         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 364                         USB_TYPE_VENDOR, 0, 0,
 365                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 366 }
 367
 368 static int ath3k_set_normal_mode(struct usb_device *udev)
 369 {
 370         unsigned char fw_state;
 371         int pipe = 0, ret;
 372
 373         ret = ath3k_get_state(udev, &fw_state);
 374         if (ret < 0) {
 375                 BT_ERR("Can't get state to change to normal mode err");
 376                 return ret;
 377         }
 378
 379         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 380                 BT_DBG("firmware was already in normal mode");
 381                 return 0;
 382         }
 383
 384         pipe = usb_sndctrlpipe(udev, 0);
 385         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 386                         USB_TYPE_VENDOR, 0, 0,
 387                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 388 }
 389
 390 static int ath3k_load_patch(struct usb_device *udev)
 391 {
 392         unsigned char fw_state;
 393         char filename[ATH3K_NAME_LEN];
 394         const struct firmware *firmware;
 395         struct ath3k_version fw_version;
 396         __u32 pt_rom_version, pt_build_version;
 397         int ret;
 398
 399         ret = ath3k_get_state(udev, &fw_state);
 400         if (ret < 0) {
 401                 BT_ERR("Can't get state to change to load ram patch err");
 402                 return ret;
 403         }
 404
 405         if (fw_state & ATH3K_PATCH_UPDATE) {
 406                 BT_DBG("Patch was already downloaded");
 407                 return 0;
 408         }
 409
 410         ret = ath3k_get_version(udev, &fw_version);
 411         if (ret < 0) {
 412                 BT_ERR("Can't get version to change to load ram patch err");
 413                 return ret;
 414         }
 415
 416         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 417                  le32_to_cpu(fw_version.rom_version));
 418
 419         ret = request_firmware(&firmware, filename, &udev->dev);
 420         if (ret < 0) {
 421                 BT_ERR("Patch file not found %s", filename);
 422                 return ret;
 423         }
 424
 425         pt_rom_version = get_unaligned_le32(firmware->data +
 426                                             firmware->size - 8);
 427         pt_build_version = get_unaligned_le32(firmware->data +
 428                                               firmware->size - 4);
 429
 430         if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
 431             pt_build_version <= le32_to_cpu(fw_version.build_version)) {
 432                 BT_ERR("Patch file version did not match with firmware");
 433                 release_firmware(firmware);
 434                 return -EINVAL;
 435         }
 436
 437         ret = ath3k_load_fwfile(udev, firmware);
 438         release_firmware(firmware);
 439
 440         return ret;
 441 }
 442
 443 static int ath3k_load_syscfg(struct usb_device *udev)
 444 {
 445         unsigned char fw_state;
 446         char filename[ATH3K_NAME_LEN];
 447         const struct firmware *firmware;
 448         struct ath3k_version fw_version;
 449         int clk_value, ret;
 450
 451         ret = ath3k_get_state(udev, &fw_state);
 452         if (ret < 0) {
 453                 BT_ERR("Can't get state to change to load configuration err");
 454                 return -EBUSY;
 455         }
 456
 457         ret = ath3k_get_version(udev, &fw_version);
 458         if (ret < 0) {
 459                 BT_ERR("Can't get version to change to load ram patch err");
 460                 return ret;
 461         }
 462
 463         switch (fw_version.ref_clock) {
 464
 465         case ATH3K_XTAL_FREQ_26M:
 466                 clk_value = 26;
 467                 break;
 468         case ATH3K_XTAL_FREQ_40M:
 469                 clk_value = 40;
 470                 break;
 471         case ATH3K_XTAL_FREQ_19P2:
 472                 clk_value = 19;
 473                 break;
 474         default:
 475                 clk_value = 0;
 476                 break;
 477         }
 478
 479         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 480                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 481
 482         ret = request_firmware(&firmware, filename, &udev->dev);
 483         if (ret < 0) {
 484                 BT_ERR("Configuration file not found %s", filename);
 485                 return ret;
 486         }
 487
 488         ret = ath3k_load_fwfile(udev, firmware);
 489         release_firmware(firmware);
 490
 491         return ret;
 492 }
 493
 494 static int ath3k_probe(struct usb_interface *intf,
 495                         const struct usb_device_id *id)
 496 {
 497         const struct firmware *firmware;
 498         struct usb_device *udev = interface_to_usbdev(intf);
 499         int ret;
 500
 501         BT_DBG("intf %p id %p", intf, id);
 502
 503         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 504                 return -ENODEV;
 505
 506         /* match device ID in ath3k blacklist table */
 507         if (!id->driver_info) {
 508                 const struct usb_device_id *match;
 509
 510                 match = usb_match_id(intf, ath3k_blist_tbl);
 511                 if (match)
 512                         id = match;
 513         }
 514
 515         /* load patch and sysconfig files for AR3012 */
 516         if (id->driver_info & BTUSB_ATH3012) {
 517                 /* New firmware with patch and sysconfig files already loaded */
 518                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 519                         return -ENODEV;
 520
 521                 ret = ath3k_load_patch(udev);
 522                 if (ret < 0) {
 523                         BT_ERR("Loading patch file failed");
 524                         return ret;
 525                 }
 526                 ret = ath3k_load_syscfg(udev);
 527                 if (ret < 0) {
 528                         BT_ERR("Loading sysconfig file failed");
 529                         return ret;
 530                 }
 531                 ret = ath3k_set_normal_mode(udev);
 532                 if (ret < 0) {
 533                         BT_ERR("Set normal mode failed");
 534                         return ret;
 535                 }
 536                 ath3k_switch_pid(udev);
 537                 return 0;
 538         }
 539
 540         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 541         if (ret < 0) {
 542                 if (ret == -ENOENT)
 543                         BT_ERR("Firmware file \"%s\" not found",
 544                                                         ATH3K_FIRMWARE);
 545                 else
 546                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 547                                                         ATH3K_FIRMWARE, ret);
 548                 return ret;
 549         }
 550
 551         ret = ath3k_load_firmware(udev, firmware);
 552         release_firmware(firmware);
 553
 554         return ret;
 555 }
 556
 557 static void ath3k_disconnect(struct usb_interface *intf)
 558 {
 559         BT_DBG("%s intf %p", __func__, intf);
 560 }
 561
 562 static struct usb_driver ath3k_driver = {
 563         .name           = "ath3k",
 564         .probe          = ath3k_probe,
 565         .disconnect     = ath3k_disconnect,
 566         .id_table       = ath3k_table,
 567         .disable_hub_initiated_lpm = 1,
 568 };
 569
 570 module_usb_driver(ath3k_driver);
 571
 572 MODULE_AUTHOR("Atheros Communications");
 573 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 574 MODULE_VERSION(VERSION);
 575 MODULE_LICENSE("GPL");
 576 MODULE_FIRMWARE(ATH3K_FIRMWARE);