Version:  2.0.40 2.2.26 2.4.37 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

Linux/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);
583 

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