xref: /openbmc/linux/drivers/bluetooth/ath3k.c (revision d7b8159d)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (c) 2008-2009 Atheros Communications Inc.
4  */
5 
6 #include <linux/module.h>
7 #include <linux/kernel.h>
8 #include <linux/init.h>
9 #include <linux/slab.h>
10 #include <linux/types.h>
11 #include <linux/errno.h>
12 #include <linux/firmware.h>
13 #include <linux/usb.h>
14 #include <asm/unaligned.h>
15 #include <net/bluetooth/bluetooth.h>
16 
17 #define VERSION "1.0"
18 #define ATH3K_FIRMWARE	"ath3k-1.fw"
19 
20 #define ATH3K_DNLOAD				0x01
21 #define ATH3K_GETSTATE				0x05
22 #define ATH3K_SET_NORMAL_MODE			0x07
23 #define ATH3K_GETVERSION			0x09
24 #define USB_REG_SWITCH_VID_PID			0x0a
25 
26 #define ATH3K_MODE_MASK				0x3F
27 #define ATH3K_NORMAL_MODE			0x0E
28 
29 #define ATH3K_PATCH_UPDATE			0x80
30 #define ATH3K_SYSCFG_UPDATE			0x40
31 
32 #define ATH3K_XTAL_FREQ_26M			0x00
33 #define ATH3K_XTAL_FREQ_40M			0x01
34 #define ATH3K_XTAL_FREQ_19P2			0x02
35 #define ATH3K_NAME_LEN				0xFF
36 
37 struct ath3k_version {
38 	__le32	rom_version;
39 	__le32	build_version;
40 	__le32	ram_version;
41 	__u8	ref_clock;
42 	__u8	reserved[7];
43 } __packed;
44 
45 static const struct usb_device_id ath3k_table[] = {
46 	/* Atheros AR3011 */
47 	{ USB_DEVICE(0x0CF3, 0x3000) },
48 
49 	/* Atheros AR3011 with sflash firmware*/
50 	{ USB_DEVICE(0x0489, 0xE027) },
51 	{ USB_DEVICE(0x0489, 0xE03D) },
52 	{ USB_DEVICE(0x04F2, 0xAFF1) },
53 	{ USB_DEVICE(0x0930, 0x0215) },
54 	{ USB_DEVICE(0x0CF3, 0x3002) },
55 	{ USB_DEVICE(0x0CF3, 0xE019) },
56 	{ USB_DEVICE(0x13d3, 0x3304) },
57 
58 	/* Atheros AR9285 Malbec with sflash firmware */
59 	{ USB_DEVICE(0x03F0, 0x311D) },
60 
61 	/* Atheros AR3012 with sflash firmware*/
62 	{ USB_DEVICE(0x0489, 0xe04d) },
63 	{ USB_DEVICE(0x0489, 0xe04e) },
64 	{ USB_DEVICE(0x0489, 0xe057) },
65 	{ USB_DEVICE(0x0489, 0xe056) },
66 	{ USB_DEVICE(0x0489, 0xe05f) },
67 	{ USB_DEVICE(0x0489, 0xe076) },
68 	{ USB_DEVICE(0x0489, 0xe078) },
69 	{ USB_DEVICE(0x0489, 0xe095) },
70 	{ USB_DEVICE(0x04c5, 0x1330) },
71 	{ USB_DEVICE(0x04CA, 0x3004) },
72 	{ USB_DEVICE(0x04CA, 0x3005) },
73 	{ USB_DEVICE(0x04CA, 0x3006) },
74 	{ USB_DEVICE(0x04CA, 0x3007) },
75 	{ USB_DEVICE(0x04CA, 0x3008) },
76 	{ USB_DEVICE(0x04CA, 0x300b) },
77 	{ USB_DEVICE(0x04CA, 0x300d) },
78 	{ USB_DEVICE(0x04CA, 0x300f) },
79 	{ USB_DEVICE(0x04CA, 0x3010) },
80 	{ USB_DEVICE(0x04CA, 0x3014) },
81 	{ USB_DEVICE(0x04CA, 0x3018) },
82 	{ USB_DEVICE(0x0930, 0x0219) },
83 	{ USB_DEVICE(0x0930, 0x021c) },
84 	{ USB_DEVICE(0x0930, 0x0220) },
85 	{ USB_DEVICE(0x0930, 0x0227) },
86 	{ USB_DEVICE(0x0b05, 0x17d0) },
87 	{ USB_DEVICE(0x0CF3, 0x0036) },
88 	{ USB_DEVICE(0x0CF3, 0x3004) },
89 	{ USB_DEVICE(0x0CF3, 0x3008) },
90 	{ USB_DEVICE(0x0CF3, 0x311D) },
91 	{ USB_DEVICE(0x0CF3, 0x311E) },
92 	{ USB_DEVICE(0x0CF3, 0x311F) },
93 	{ USB_DEVICE(0x0cf3, 0x3121) },
94 	{ USB_DEVICE(0x0CF3, 0x817a) },
95 	{ USB_DEVICE(0x0CF3, 0x817b) },
96 	{ USB_DEVICE(0x0cf3, 0xe003) },
97 	{ USB_DEVICE(0x0CF3, 0xE004) },
98 	{ USB_DEVICE(0x0CF3, 0xE005) },
99 	{ USB_DEVICE(0x0CF3, 0xE006) },
100 	{ USB_DEVICE(0x13d3, 0x3362) },
101 	{ USB_DEVICE(0x13d3, 0x3375) },
102 	{ USB_DEVICE(0x13d3, 0x3393) },
103 	{ USB_DEVICE(0x13d3, 0x3395) },
104 	{ USB_DEVICE(0x13d3, 0x3402) },
105 	{ USB_DEVICE(0x13d3, 0x3408) },
106 	{ USB_DEVICE(0x13d3, 0x3423) },
107 	{ USB_DEVICE(0x13d3, 0x3432) },
108 	{ USB_DEVICE(0x13d3, 0x3472) },
109 	{ USB_DEVICE(0x13d3, 0x3474) },
110 	{ USB_DEVICE(0x13d3, 0x3487) },
111 	{ USB_DEVICE(0x13d3, 0x3490) },
112 
113 	/* Atheros AR5BBU12 with sflash firmware */
114 	{ USB_DEVICE(0x0489, 0xE02C) },
115 
116 	/* Atheros AR5BBU22 with sflash firmware */
117 	{ USB_DEVICE(0x0489, 0xE036) },
118 	{ USB_DEVICE(0x0489, 0xE03C) },
119 
120 	{ }	/* Terminating entry */
121 };
122 
123 MODULE_DEVICE_TABLE(usb, ath3k_table);
124 
125 #define BTUSB_ATH3012		0x80
126 /* This table is to load patch and sysconfig files
127  * for AR3012
128  */
129 static const struct usb_device_id ath3k_blist_tbl[] = {
130 	/* Atheros AR3012 with sflash firmware*/
131 	{ USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
132 	{ USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
133 	{ USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
134 	{ USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
135 	{ USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
136 	{ USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
137 	{ USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
138 	{ USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
139 	{ USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
140 	{ USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
141 	{ USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
142 	{ USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
143 	{ USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
144 	{ USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
145 	{ USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
146 	{ USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
147 	{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
148 	{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
149 	{ USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
150 	{ USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
151 	{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
152 	{ USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
153 	{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
154 	{ USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
155 	{ USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
156 	{ USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
157 	{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
158 	{ USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
159 	{ USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
160 	{ USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
161 	{ USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
162 	{ USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
163 	{ USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
164 	{ USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
165 	{ USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
166 	{ USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
167 	{ USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
168 	{ USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
169 	{ USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
170 	{ USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
171 	{ USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
172 	{ USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
173 	{ USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
174 	{ USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
175 	{ USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
176 	{ USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
177 	{ USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
178 	{ USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
179 	{ USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
180 	{ USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
181 
182 	/* Atheros AR5BBU22 with sflash firmware */
183 	{ USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
184 	{ USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
185 
186 	{ }	/* Terminating entry */
187 };
188 
ath3k_log_failed_loading(int err,int len,int size,int count)189 static inline void ath3k_log_failed_loading(int err, int len, int size,
190 					    int count)
191 {
192 	BT_ERR("Firmware loading err = %d, len = %d, size = %d, count = %d",
193 	       err, len, size, count);
194 }
195 
196 #define USB_REQ_DFU_DNLOAD	1
197 #define BULK_SIZE		4096
198 #define FW_HDR_SIZE		20
199 #define TIMEGAP_USEC_MIN	50
200 #define TIMEGAP_USEC_MAX	100
201 
ath3k_load_firmware(struct usb_device * udev,const struct firmware * firmware)202 static int ath3k_load_firmware(struct usb_device *udev,
203 			       const struct firmware *firmware)
204 {
205 	u8 *send_buf;
206 	int len = 0;
207 	int err, pipe, size, sent = 0;
208 	int count = firmware->size;
209 
210 	BT_DBG("udev %p", udev);
211 
212 	send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
213 	if (!send_buf) {
214 		BT_ERR("Can't allocate memory chunk for firmware");
215 		return -ENOMEM;
216 	}
217 
218 	err = usb_control_msg_send(udev, 0, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
219 				   0, 0, firmware->data, FW_HDR_SIZE,
220 				   USB_CTRL_SET_TIMEOUT, GFP_KERNEL);
221 	if (err) {
222 		BT_ERR("Can't change to loading configuration err");
223 		goto error;
224 	}
225 	sent += FW_HDR_SIZE;
226 	count -= FW_HDR_SIZE;
227 
228 	pipe = usb_sndbulkpipe(udev, 0x02);
229 
230 	while (count) {
231 		/* workaround the compatibility issue with xHCI controller*/
232 		usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
233 
234 		size = min_t(uint, count, BULK_SIZE);
235 		memcpy(send_buf, firmware->data + sent, size);
236 
237 		err = usb_bulk_msg(udev, pipe, send_buf, size,
238 				   &len, 3000);
239 
240 		if (err || len != size) {
241 			ath3k_log_failed_loading(err, len, size, count);
242 			goto error;
243 		}
244 
245 		sent  += size;
246 		count -= size;
247 	}
248 
249 error:
250 	kfree(send_buf);
251 	return err;
252 }
253 
ath3k_get_state(struct usb_device * udev,unsigned char * state)254 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
255 {
256 	return usb_control_msg_recv(udev, 0, ATH3K_GETSTATE,
257 				    USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
258 				    state, 1, USB_CTRL_SET_TIMEOUT,
259 				    GFP_KERNEL);
260 }
261 
ath3k_get_version(struct usb_device * udev,struct ath3k_version * version)262 static int ath3k_get_version(struct usb_device *udev,
263 			     struct ath3k_version *version)
264 {
265 	return usb_control_msg_recv(udev, 0, ATH3K_GETVERSION,
266 				    USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
267 				    version, sizeof(*version), USB_CTRL_SET_TIMEOUT,
268 				    GFP_KERNEL);
269 }
270 
ath3k_load_fwfile(struct usb_device * udev,const struct firmware * firmware)271 static int ath3k_load_fwfile(struct usb_device *udev,
272 			     const struct firmware *firmware)
273 {
274 	u8 *send_buf;
275 	int len = 0;
276 	int err, pipe, size, count, sent = 0;
277 	int ret;
278 
279 	count = firmware->size;
280 
281 	send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
282 	if (!send_buf) {
283 		BT_ERR("Can't allocate memory chunk for firmware");
284 		return -ENOMEM;
285 	}
286 
287 	size = min_t(uint, count, FW_HDR_SIZE);
288 
289 	ret = usb_control_msg_send(udev, 0, ATH3K_DNLOAD, USB_TYPE_VENDOR, 0, 0,
290 				   firmware->data, size, USB_CTRL_SET_TIMEOUT,
291 				   GFP_KERNEL);
292 	if (ret) {
293 		BT_ERR("Can't change to loading configuration err");
294 		kfree(send_buf);
295 		return ret;
296 	}
297 
298 	sent += size;
299 	count -= size;
300 
301 	pipe = usb_sndbulkpipe(udev, 0x02);
302 
303 	while (count) {
304 		/* workaround the compatibility issue with xHCI controller*/
305 		usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
306 
307 		size = min_t(uint, count, BULK_SIZE);
308 		memcpy(send_buf, firmware->data + sent, size);
309 
310 		err = usb_bulk_msg(udev, pipe, send_buf, size,
311 				   &len, 3000);
312 		if (err || len != size) {
313 			ath3k_log_failed_loading(err, len, size, count);
314 			kfree(send_buf);
315 			return err;
316 		}
317 		sent  += size;
318 		count -= size;
319 	}
320 
321 	kfree(send_buf);
322 	return 0;
323 }
324 
ath3k_switch_pid(struct usb_device * udev)325 static void ath3k_switch_pid(struct usb_device *udev)
326 {
327 	usb_control_msg_send(udev, 0, USB_REG_SWITCH_VID_PID, USB_TYPE_VENDOR,
328 			     0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT, GFP_KERNEL);
329 }
330 
ath3k_set_normal_mode(struct usb_device * udev)331 static int ath3k_set_normal_mode(struct usb_device *udev)
332 {
333 	unsigned char fw_state;
334 	int ret;
335 
336 	ret = ath3k_get_state(udev, &fw_state);
337 	if (ret) {
338 		BT_ERR("Can't get state to change to normal mode err");
339 		return ret;
340 	}
341 
342 	if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
343 		BT_DBG("firmware was already in normal mode");
344 		return 0;
345 	}
346 
347 	return usb_control_msg_send(udev, 0, ATH3K_SET_NORMAL_MODE,
348 				    USB_TYPE_VENDOR, 0, 0, NULL, 0,
349 				    USB_CTRL_SET_TIMEOUT, GFP_KERNEL);
350 }
351 
ath3k_load_patch(struct usb_device * udev)352 static int ath3k_load_patch(struct usb_device *udev)
353 {
354 	unsigned char fw_state;
355 	char filename[ATH3K_NAME_LEN];
356 	const struct firmware *firmware;
357 	struct ath3k_version fw_version;
358 	__u32 pt_rom_version, pt_build_version;
359 	int ret;
360 
361 	ret = ath3k_get_state(udev, &fw_state);
362 	if (ret) {
363 		BT_ERR("Can't get state to change to load ram patch err");
364 		return ret;
365 	}
366 
367 	if (fw_state & ATH3K_PATCH_UPDATE) {
368 		BT_DBG("Patch was already downloaded");
369 		return 0;
370 	}
371 
372 	ret = ath3k_get_version(udev, &fw_version);
373 	if (ret) {
374 		BT_ERR("Can't get version to change to load ram patch err");
375 		return ret;
376 	}
377 
378 	snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
379 		 le32_to_cpu(fw_version.rom_version));
380 
381 	ret = request_firmware(&firmware, filename, &udev->dev);
382 	if (ret < 0) {
383 		BT_ERR("Patch file not found %s", filename);
384 		return ret;
385 	}
386 
387 	pt_rom_version = get_unaligned_le32(firmware->data +
388 					    firmware->size - 8);
389 	pt_build_version = get_unaligned_le32(firmware->data +
390 					      firmware->size - 4);
391 
392 	if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
393 	    pt_build_version <= le32_to_cpu(fw_version.build_version)) {
394 		BT_ERR("Patch file version did not match with firmware");
395 		release_firmware(firmware);
396 		return -EINVAL;
397 	}
398 
399 	ret = ath3k_load_fwfile(udev, firmware);
400 	release_firmware(firmware);
401 
402 	return ret;
403 }
404 
ath3k_load_syscfg(struct usb_device * udev)405 static int ath3k_load_syscfg(struct usb_device *udev)
406 {
407 	unsigned char fw_state;
408 	char filename[ATH3K_NAME_LEN];
409 	const struct firmware *firmware;
410 	struct ath3k_version fw_version;
411 	int clk_value, ret;
412 
413 	ret = ath3k_get_state(udev, &fw_state);
414 	if (ret) {
415 		BT_ERR("Can't get state to change to load configuration err");
416 		return -EBUSY;
417 	}
418 
419 	ret = ath3k_get_version(udev, &fw_version);
420 	if (ret) {
421 		BT_ERR("Can't get version to change to load ram patch err");
422 		return ret;
423 	}
424 
425 	switch (fw_version.ref_clock) {
426 	case ATH3K_XTAL_FREQ_26M:
427 		clk_value = 26;
428 		break;
429 	case ATH3K_XTAL_FREQ_40M:
430 		clk_value = 40;
431 		break;
432 	case ATH3K_XTAL_FREQ_19P2:
433 		clk_value = 19;
434 		break;
435 	default:
436 		clk_value = 0;
437 		break;
438 	}
439 
440 	snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
441 		 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
442 
443 	ret = request_firmware(&firmware, filename, &udev->dev);
444 	if (ret < 0) {
445 		BT_ERR("Configuration file not found %s", filename);
446 		return ret;
447 	}
448 
449 	ret = ath3k_load_fwfile(udev, firmware);
450 	release_firmware(firmware);
451 
452 	return ret;
453 }
454 
ath3k_probe(struct usb_interface * intf,const struct usb_device_id * id)455 static int ath3k_probe(struct usb_interface *intf,
456 		       const struct usb_device_id *id)
457 {
458 	const struct firmware *firmware;
459 	struct usb_device *udev = interface_to_usbdev(intf);
460 	int ret;
461 
462 	BT_DBG("intf %p id %p", intf, id);
463 
464 	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
465 		return -ENODEV;
466 
467 	/* match device ID in ath3k blacklist table */
468 	if (!id->driver_info) {
469 		const struct usb_device_id *match;
470 
471 		match = usb_match_id(intf, ath3k_blist_tbl);
472 		if (match)
473 			id = match;
474 	}
475 
476 	/* load patch and sysconfig files for AR3012 */
477 	if (id->driver_info & BTUSB_ATH3012) {
478 		/* New firmware with patch and sysconfig files already loaded */
479 		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
480 			return -ENODEV;
481 
482 		ret = ath3k_load_patch(udev);
483 		if (ret < 0) {
484 			BT_ERR("Loading patch file failed");
485 			return ret;
486 		}
487 		ret = ath3k_load_syscfg(udev);
488 		if (ret < 0) {
489 			BT_ERR("Loading sysconfig file failed");
490 			return ret;
491 		}
492 		ret = ath3k_set_normal_mode(udev);
493 		if (ret) {
494 			BT_ERR("Set normal mode failed");
495 			return ret;
496 		}
497 		ath3k_switch_pid(udev);
498 		return 0;
499 	}
500 
501 	ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
502 	if (ret < 0) {
503 		if (ret == -ENOENT)
504 			BT_ERR("Firmware file \"%s\" not found",
505 			       ATH3K_FIRMWARE);
506 		else
507 			BT_ERR("Firmware file \"%s\" request failed (err=%d)",
508 			       ATH3K_FIRMWARE, ret);
509 		return ret;
510 	}
511 
512 	ret = ath3k_load_firmware(udev, firmware);
513 	release_firmware(firmware);
514 
515 	return ret;
516 }
517 
ath3k_disconnect(struct usb_interface * intf)518 static void ath3k_disconnect(struct usb_interface *intf)
519 {
520 	BT_DBG("%s intf %p", __func__, intf);
521 }
522 
523 static struct usb_driver ath3k_driver = {
524 	.name		= "ath3k",
525 	.probe		= ath3k_probe,
526 	.disconnect	= ath3k_disconnect,
527 	.id_table	= ath3k_table,
528 	.disable_hub_initiated_lpm = 1,
529 };
530 
531 module_usb_driver(ath3k_driver);
532 
533 MODULE_AUTHOR("Atheros Communications");
534 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
535 MODULE_VERSION(VERSION);
536 MODULE_LICENSE("GPL");
537 MODULE_FIRMWARE(ATH3K_FIRMWARE);
538