xref: /linux/drivers/bluetooth/ath3k.c (revision ef69f8d2ff09518657c3ecaf2db8408c16549829)
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(0x04CA, 0x3018) },
98 	{ USB_DEVICE(0x0930, 0x0219) },
99 	{ USB_DEVICE(0x0930, 0x021c) },
100 	{ USB_DEVICE(0x0930, 0x0220) },
101 	{ USB_DEVICE(0x0930, 0x0227) },
102 	{ USB_DEVICE(0x0b05, 0x17d0) },
103 	{ USB_DEVICE(0x0CF3, 0x0036) },
104 	{ USB_DEVICE(0x0CF3, 0x3004) },
105 	{ USB_DEVICE(0x0CF3, 0x3008) },
106 	{ USB_DEVICE(0x0CF3, 0x311D) },
107 	{ USB_DEVICE(0x0CF3, 0x311E) },
108 	{ USB_DEVICE(0x0CF3, 0x311F) },
109 	{ USB_DEVICE(0x0cf3, 0x3121) },
110 	{ USB_DEVICE(0x0CF3, 0x817a) },
111 	{ USB_DEVICE(0x0CF3, 0x817b) },
112 	{ USB_DEVICE(0x0cf3, 0xe003) },
113 	{ USB_DEVICE(0x0CF3, 0xE004) },
114 	{ USB_DEVICE(0x0CF3, 0xE005) },
115 	{ USB_DEVICE(0x0CF3, 0xE006) },
116 	{ USB_DEVICE(0x13d3, 0x3362) },
117 	{ USB_DEVICE(0x13d3, 0x3375) },
118 	{ USB_DEVICE(0x13d3, 0x3393) },
119 	{ USB_DEVICE(0x13d3, 0x3395) },
120 	{ USB_DEVICE(0x13d3, 0x3402) },
121 	{ USB_DEVICE(0x13d3, 0x3408) },
122 	{ USB_DEVICE(0x13d3, 0x3423) },
123 	{ USB_DEVICE(0x13d3, 0x3432) },
124 	{ USB_DEVICE(0x13d3, 0x3472) },
125 	{ USB_DEVICE(0x13d3, 0x3474) },
126 	{ USB_DEVICE(0x13d3, 0x3487) },
127 	{ USB_DEVICE(0x13d3, 0x3490) },
128 
129 	/* Atheros AR5BBU12 with sflash firmware */
130 	{ USB_DEVICE(0x0489, 0xE02C) },
131 
132 	/* Atheros AR5BBU22 with sflash firmware */
133 	{ USB_DEVICE(0x0489, 0xE036) },
134 	{ USB_DEVICE(0x0489, 0xE03C) },
135 
136 	{ }	/* Terminating entry */
137 };
138 
139 MODULE_DEVICE_TABLE(usb, ath3k_table);
140 
141 #define BTUSB_ATH3012		0x80
142 /* This table is to load patch and sysconfig files
143  * for AR3012
144  */
145 static const struct usb_device_id ath3k_blist_tbl[] = {
146 
147 	/* Atheros AR3012 with sflash firmware*/
148 	{ USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
149 	{ USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
150 	{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
151 	{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
152 	{ USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
153 	{ USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
154 	{ USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
155 	{ USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
156 	{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
157 	{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
158 	{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
159 	{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
160 	{ USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
161 	{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
162 	{ USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
163 	{ USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
164 	{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
165 	{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
166 	{ USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
167 	{ USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
168 	{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
169 	{ USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
170 	{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
171 	{ USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
172 	{ USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
173 	{ USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
174 	{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
175 	{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
176 	{ USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
177 	{ USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
178 	{ USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
179 	{ USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
180 	{ USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
181 	{ USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
182 	{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
183 	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
184 	{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
185 	{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
186 	{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
187 	{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
188 	{ USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
189 	{ USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
190 	{ USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
191 	{ USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
192 	{ USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
193 	{ USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
194 	{ USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
195 	{ USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
196 	{ USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
197 	{ USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
198 
199 	/* Atheros AR5BBU22 with sflash firmware */
200 	{ USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
201 	{ USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
202 
203 	{ }	/* Terminating entry */
204 };
205 
206 #define USB_REQ_DFU_DNLOAD	1
207 #define BULK_SIZE		4096
208 #define FW_HDR_SIZE		20
209 #define TIMEGAP_USEC_MIN	50
210 #define TIMEGAP_USEC_MAX	100
211 
212 static int ath3k_load_firmware(struct usb_device *udev,
213 				const struct firmware *firmware)
214 {
215 	u8 *send_buf;
216 	int len = 0;
217 	int err, pipe, size, sent = 0;
218 	int count = firmware->size;
219 
220 	BT_DBG("udev %p", udev);
221 
222 	pipe = usb_sndctrlpipe(udev, 0);
223 
224 	send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
225 	if (!send_buf) {
226 		BT_ERR("Can't allocate memory chunk for firmware");
227 		return -ENOMEM;
228 	}
229 
230 	memcpy(send_buf, firmware->data, 20);
231 	err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
232 			      0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
233 	if (err < 0) {
234 		BT_ERR("Can't change to loading configuration err");
235 		goto error;
236 	}
237 	sent += 20;
238 	count -= 20;
239 
240 	pipe = usb_sndbulkpipe(udev, 0x02);
241 
242 	while (count) {
243 		/* workaround the compatibility issue with xHCI controller*/
244 		usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
245 
246 		size = min_t(uint, count, BULK_SIZE);
247 		memcpy(send_buf, firmware->data + sent, size);
248 
249 		err = usb_bulk_msg(udev, pipe, send_buf, size,
250 					&len, 3000);
251 
252 		if (err || (len != size)) {
253 			BT_ERR("Error in firmware loading err = %d,"
254 				"len = %d, size = %d", err, len, size);
255 			goto error;
256 		}
257 
258 		sent  += size;
259 		count -= size;
260 	}
261 
262 error:
263 	kfree(send_buf);
264 	return err;
265 }
266 
267 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
268 {
269 	int ret, pipe = 0;
270 	char *buf;
271 
272 	buf = kmalloc(sizeof(*buf), GFP_KERNEL);
273 	if (!buf)
274 		return -ENOMEM;
275 
276 	pipe = usb_rcvctrlpipe(udev, 0);
277 	ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
278 			      USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
279 			      buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
280 
281 	*state = *buf;
282 	kfree(buf);
283 
284 	return ret;
285 }
286 
287 static int ath3k_get_version(struct usb_device *udev,
288 			struct ath3k_version *version)
289 {
290 	int ret, pipe = 0;
291 	struct ath3k_version *buf;
292 	const int size = sizeof(*buf);
293 
294 	buf = kmalloc(size, GFP_KERNEL);
295 	if (!buf)
296 		return -ENOMEM;
297 
298 	pipe = usb_rcvctrlpipe(udev, 0);
299 	ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
300 			      USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
301 			      buf, size, USB_CTRL_SET_TIMEOUT);
302 
303 	memcpy(version, buf, size);
304 	kfree(buf);
305 
306 	return ret;
307 }
308 
309 static int ath3k_load_fwfile(struct usb_device *udev,
310 		const struct firmware *firmware)
311 {
312 	u8 *send_buf;
313 	int len = 0;
314 	int err, pipe, size, count, sent = 0;
315 	int ret;
316 
317 	count = firmware->size;
318 
319 	send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
320 	if (!send_buf) {
321 		BT_ERR("Can't allocate memory chunk for firmware");
322 		return -ENOMEM;
323 	}
324 
325 	size = min_t(uint, count, FW_HDR_SIZE);
326 	memcpy(send_buf, firmware->data, size);
327 
328 	pipe = usb_sndctrlpipe(udev, 0);
329 	ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
330 			USB_TYPE_VENDOR, 0, 0, send_buf,
331 			size, USB_CTRL_SET_TIMEOUT);
332 	if (ret < 0) {
333 		BT_ERR("Can't change to loading configuration err");
334 		kfree(send_buf);
335 		return ret;
336 	}
337 
338 	sent += size;
339 	count -= size;
340 
341 	pipe = usb_sndbulkpipe(udev, 0x02);
342 
343 	while (count) {
344 		/* workaround the compatibility issue with xHCI controller*/
345 		usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
346 
347 		size = min_t(uint, count, BULK_SIZE);
348 		memcpy(send_buf, firmware->data + sent, size);
349 
350 		err = usb_bulk_msg(udev, pipe, send_buf, size,
351 					&len, 3000);
352 		if (err || (len != size)) {
353 			BT_ERR("Error in firmware loading err = %d,"
354 				"len = %d, size = %d", err, len, size);
355 			kfree(send_buf);
356 			return err;
357 		}
358 		sent  += size;
359 		count -= size;
360 	}
361 
362 	kfree(send_buf);
363 	return 0;
364 }
365 
366 static int ath3k_switch_pid(struct usb_device *udev)
367 {
368 	int pipe = 0;
369 
370 	pipe = usb_sndctrlpipe(udev, 0);
371 	return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
372 			USB_TYPE_VENDOR, 0, 0,
373 			NULL, 0, USB_CTRL_SET_TIMEOUT);
374 }
375 
376 static int ath3k_set_normal_mode(struct usb_device *udev)
377 {
378 	unsigned char fw_state;
379 	int pipe = 0, ret;
380 
381 	ret = ath3k_get_state(udev, &fw_state);
382 	if (ret < 0) {
383 		BT_ERR("Can't get state to change to normal mode err");
384 		return ret;
385 	}
386 
387 	if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
388 		BT_DBG("firmware was already in normal mode");
389 		return 0;
390 	}
391 
392 	pipe = usb_sndctrlpipe(udev, 0);
393 	return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
394 			USB_TYPE_VENDOR, 0, 0,
395 			NULL, 0, USB_CTRL_SET_TIMEOUT);
396 }
397 
398 static int ath3k_load_patch(struct usb_device *udev)
399 {
400 	unsigned char fw_state;
401 	char filename[ATH3K_NAME_LEN] = {0};
402 	const struct firmware *firmware;
403 	struct ath3k_version fw_version;
404 	__u32 pt_rom_version, pt_build_version;
405 	int ret;
406 
407 	ret = ath3k_get_state(udev, &fw_state);
408 	if (ret < 0) {
409 		BT_ERR("Can't get state to change to load ram patch err");
410 		return ret;
411 	}
412 
413 	if (fw_state & ATH3K_PATCH_UPDATE) {
414 		BT_DBG("Patch was already downloaded");
415 		return 0;
416 	}
417 
418 	ret = ath3k_get_version(udev, &fw_version);
419 	if (ret < 0) {
420 		BT_ERR("Can't get version to change to load ram patch err");
421 		return ret;
422 	}
423 
424 	snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
425 		 le32_to_cpu(fw_version.rom_version));
426 
427 	ret = request_firmware(&firmware, filename, &udev->dev);
428 	if (ret < 0) {
429 		BT_ERR("Patch file not found %s", filename);
430 		return ret;
431 	}
432 
433 	pt_rom_version = get_unaligned_le32(firmware->data +
434 					    firmware->size - 8);
435 	pt_build_version = get_unaligned_le32(firmware->data +
436 					      firmware->size - 4);
437 
438 	if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
439 	    pt_build_version <= le32_to_cpu(fw_version.build_version)) {
440 		BT_ERR("Patch file version did not match with firmware");
441 		release_firmware(firmware);
442 		return -EINVAL;
443 	}
444 
445 	ret = ath3k_load_fwfile(udev, firmware);
446 	release_firmware(firmware);
447 
448 	return ret;
449 }
450 
451 static int ath3k_load_syscfg(struct usb_device *udev)
452 {
453 	unsigned char fw_state;
454 	char filename[ATH3K_NAME_LEN] = {0};
455 	const struct firmware *firmware;
456 	struct ath3k_version fw_version;
457 	int clk_value, ret;
458 
459 	ret = ath3k_get_state(udev, &fw_state);
460 	if (ret < 0) {
461 		BT_ERR("Can't get state to change to load configuration err");
462 		return -EBUSY;
463 	}
464 
465 	ret = ath3k_get_version(udev, &fw_version);
466 	if (ret < 0) {
467 		BT_ERR("Can't get version to change to load ram patch err");
468 		return ret;
469 	}
470 
471 	switch (fw_version.ref_clock) {
472 
473 	case ATH3K_XTAL_FREQ_26M:
474 		clk_value = 26;
475 		break;
476 	case ATH3K_XTAL_FREQ_40M:
477 		clk_value = 40;
478 		break;
479 	case ATH3K_XTAL_FREQ_19P2:
480 		clk_value = 19;
481 		break;
482 	default:
483 		clk_value = 0;
484 		break;
485 	}
486 
487 	snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
488 		le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
489 
490 	ret = request_firmware(&firmware, filename, &udev->dev);
491 	if (ret < 0) {
492 		BT_ERR("Configuration file not found %s", filename);
493 		return ret;
494 	}
495 
496 	ret = ath3k_load_fwfile(udev, firmware);
497 	release_firmware(firmware);
498 
499 	return ret;
500 }
501 
502 static int ath3k_probe(struct usb_interface *intf,
503 			const struct usb_device_id *id)
504 {
505 	const struct firmware *firmware;
506 	struct usb_device *udev = interface_to_usbdev(intf);
507 	int ret;
508 
509 	BT_DBG("intf %p id %p", intf, id);
510 
511 	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
512 		return -ENODEV;
513 
514 	/* match device ID in ath3k blacklist table */
515 	if (!id->driver_info) {
516 		const struct usb_device_id *match;
517 
518 		match = usb_match_id(intf, ath3k_blist_tbl);
519 		if (match)
520 			id = match;
521 	}
522 
523 	/* load patch and sysconfig files for AR3012 */
524 	if (id->driver_info & BTUSB_ATH3012) {
525 
526 		/* New firmware with patch and sysconfig files already loaded */
527 		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
528 			return -ENODEV;
529 
530 		ret = ath3k_load_patch(udev);
531 		if (ret < 0) {
532 			BT_ERR("Loading patch file failed");
533 			return ret;
534 		}
535 		ret = ath3k_load_syscfg(udev);
536 		if (ret < 0) {
537 			BT_ERR("Loading sysconfig file failed");
538 			return ret;
539 		}
540 		ret = ath3k_set_normal_mode(udev);
541 		if (ret < 0) {
542 			BT_ERR("Set normal mode failed");
543 			return ret;
544 		}
545 		ath3k_switch_pid(udev);
546 		return 0;
547 	}
548 
549 	ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
550 	if (ret < 0) {
551 		if (ret == -ENOENT)
552 			BT_ERR("Firmware file \"%s\" not found",
553 							ATH3K_FIRMWARE);
554 		else
555 			BT_ERR("Firmware file \"%s\" request failed (err=%d)",
556 							ATH3K_FIRMWARE, ret);
557 		return ret;
558 	}
559 
560 	ret = ath3k_load_firmware(udev, firmware);
561 	release_firmware(firmware);
562 
563 	return ret;
564 }
565 
566 static void ath3k_disconnect(struct usb_interface *intf)
567 {
568 	BT_DBG("ath3k_disconnect intf %p", intf);
569 }
570 
571 static struct usb_driver ath3k_driver = {
572 	.name		= "ath3k",
573 	.probe		= ath3k_probe,
574 	.disconnect	= ath3k_disconnect,
575 	.id_table	= ath3k_table,
576 	.disable_hub_initiated_lpm = 1,
577 };
578 
579 module_usb_driver(ath3k_driver);
580 
581 MODULE_AUTHOR("Atheros Communications");
582 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
583 MODULE_VERSION(VERSION);
584 MODULE_LICENSE("GPL");
585 MODULE_FIRMWARE(ATH3K_FIRMWARE);
586