xref: /linux/sound/usb/quirks.c (revision 3630400697a3d334a391c1dba1b601d852145f2c)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  */
4 
5 #include <linux/init.h>
6 #include <linux/slab.h>
7 #include <linux/usb.h>
8 #include <linux/usb/audio.h>
9 #include <linux/usb/midi.h>
10 #include <linux/bits.h>
11 
12 #include <sound/control.h>
13 #include <sound/core.h>
14 #include <sound/info.h>
15 #include <sound/pcm.h>
16 
17 #include "usbaudio.h"
18 #include "card.h"
19 #include "mixer.h"
20 #include "mixer_quirks.h"
21 #include "midi.h"
22 #include "midi2.h"
23 #include "quirks.h"
24 #include "helper.h"
25 #include "endpoint.h"
26 #include "pcm.h"
27 #include "clock.h"
28 #include "stream.h"
29 
30 /*
31  * handle the quirks for the contained interfaces
32  */
33 static int create_composite_quirk(struct snd_usb_audio *chip,
34 				  struct usb_interface *iface,
35 				  struct usb_driver *driver,
36 				  const struct snd_usb_audio_quirk *quirk_comp)
37 {
38 	int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
39 	const struct snd_usb_audio_quirk *quirk;
40 	int err;
41 
42 	for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) {
43 		iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
44 		if (!iface)
45 			continue;
46 		if (quirk->ifnum != probed_ifnum &&
47 		    usb_interface_claimed(iface))
48 			continue;
49 		err = snd_usb_create_quirk(chip, iface, driver, quirk);
50 		if (err < 0)
51 			return err;
52 	}
53 
54 	for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) {
55 		iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
56 		if (!iface)
57 			continue;
58 		if (quirk->ifnum != probed_ifnum &&
59 		    !usb_interface_claimed(iface)) {
60 			err = usb_driver_claim_interface(driver, iface,
61 							 USB_AUDIO_IFACE_UNUSED);
62 			if (err < 0)
63 				return err;
64 		}
65 	}
66 
67 	return 0;
68 }
69 
70 static int ignore_interface_quirk(struct snd_usb_audio *chip,
71 				  struct usb_interface *iface,
72 				  struct usb_driver *driver,
73 				  const struct snd_usb_audio_quirk *quirk)
74 {
75 	return 0;
76 }
77 
78 
79 static int create_any_midi_quirk(struct snd_usb_audio *chip,
80 				 struct usb_interface *intf,
81 				 struct usb_driver *driver,
82 				 const struct snd_usb_audio_quirk *quirk)
83 {
84 	return snd_usb_midi_v2_create(chip, intf, quirk, 0);
85 }
86 
87 /*
88  * create a stream for an interface with proper descriptors
89  */
90 static int create_standard_audio_quirk(struct snd_usb_audio *chip,
91 				       struct usb_interface *iface,
92 				       struct usb_driver *driver,
93 				       const struct snd_usb_audio_quirk *quirk)
94 {
95 	struct usb_host_interface *alts;
96 	struct usb_interface_descriptor *altsd;
97 	int err;
98 
99 	alts = &iface->altsetting[0];
100 	altsd = get_iface_desc(alts);
101 	err = snd_usb_parse_audio_interface(chip, altsd->bInterfaceNumber);
102 	if (err < 0) {
103 		usb_audio_err(chip, "cannot setup if %d: error %d\n",
104 			   altsd->bInterfaceNumber, err);
105 		return err;
106 	}
107 	/* reset the current interface */
108 	usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
109 	return 0;
110 }
111 
112 /* create the audio stream and the corresponding endpoints from the fixed
113  * audioformat object; this is used for quirks with the fixed EPs
114  */
115 static int add_audio_stream_from_fixed_fmt(struct snd_usb_audio *chip,
116 					   struct audioformat *fp)
117 {
118 	int stream, err;
119 
120 	stream = (fp->endpoint & USB_DIR_IN) ?
121 		SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
122 
123 	snd_usb_audioformat_set_sync_ep(chip, fp);
124 
125 	err = snd_usb_add_audio_stream(chip, stream, fp);
126 	if (err < 0)
127 		return err;
128 
129 	err = snd_usb_add_endpoint(chip, fp->endpoint,
130 				   SND_USB_ENDPOINT_TYPE_DATA);
131 	if (err < 0)
132 		return err;
133 
134 	if (fp->sync_ep) {
135 		err = snd_usb_add_endpoint(chip, fp->sync_ep,
136 					   fp->implicit_fb ?
137 					   SND_USB_ENDPOINT_TYPE_DATA :
138 					   SND_USB_ENDPOINT_TYPE_SYNC);
139 		if (err < 0)
140 			return err;
141 	}
142 
143 	return 0;
144 }
145 
146 /*
147  * create a stream for an endpoint/altsetting without proper descriptors
148  */
149 static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
150 				     struct usb_interface *iface,
151 				     struct usb_driver *driver,
152 				     const struct snd_usb_audio_quirk *quirk)
153 {
154 	struct audioformat *fp;
155 	struct usb_host_interface *alts;
156 	struct usb_interface_descriptor *altsd;
157 	unsigned *rate_table = NULL;
158 	int err;
159 
160 	fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
161 	if (!fp)
162 		return -ENOMEM;
163 
164 	INIT_LIST_HEAD(&fp->list);
165 	if (fp->nr_rates > MAX_NR_RATES) {
166 		kfree(fp);
167 		return -EINVAL;
168 	}
169 	if (fp->nr_rates > 0) {
170 		rate_table = kmemdup_array(fp->rate_table, fp->nr_rates, sizeof(int),
171 					   GFP_KERNEL);
172 		if (!rate_table) {
173 			kfree(fp);
174 			return -ENOMEM;
175 		}
176 		fp->rate_table = rate_table;
177 	}
178 
179 	if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
180 	    fp->altset_idx >= iface->num_altsetting) {
181 		err = -EINVAL;
182 		goto error;
183 	}
184 	alts = &iface->altsetting[fp->altset_idx];
185 	altsd = get_iface_desc(alts);
186 	if (altsd->bNumEndpoints <= fp->ep_idx) {
187 		err = -EINVAL;
188 		goto error;
189 	}
190 
191 	fp->protocol = altsd->bInterfaceProtocol;
192 
193 	if (fp->datainterval == 0)
194 		fp->datainterval = snd_usb_parse_datainterval(chip, alts);
195 	if (fp->maxpacksize == 0)
196 		fp->maxpacksize = le16_to_cpu(get_endpoint(alts, fp->ep_idx)->wMaxPacketSize);
197 	if (!fp->fmt_type)
198 		fp->fmt_type = UAC_FORMAT_TYPE_I;
199 
200 	err = add_audio_stream_from_fixed_fmt(chip, fp);
201 	if (err < 0)
202 		goto error;
203 
204 	usb_set_interface(chip->dev, fp->iface, 0);
205 	snd_usb_init_pitch(chip, fp);
206 	snd_usb_init_sample_rate(chip, fp, fp->rate_max);
207 	return 0;
208 
209  error:
210 	list_del(&fp->list); /* unlink for avoiding double-free */
211 	kfree(fp);
212 	kfree(rate_table);
213 	return err;
214 }
215 
216 static int create_auto_pcm_quirk(struct snd_usb_audio *chip,
217 				 struct usb_interface *iface,
218 				 struct usb_driver *driver)
219 {
220 	struct usb_host_interface *alts;
221 	struct usb_interface_descriptor *altsd;
222 	struct usb_endpoint_descriptor *epd;
223 	struct uac1_as_header_descriptor *ashd;
224 	struct uac_format_type_i_discrete_descriptor *fmtd;
225 
226 	/*
227 	 * Most Roland/Yamaha audio streaming interfaces have more or less
228 	 * standard descriptors, but older devices might lack descriptors, and
229 	 * future ones might change, so ensure that we fail silently if the
230 	 * interface doesn't look exactly right.
231 	 */
232 
233 	/* must have a non-zero altsetting for streaming */
234 	if (iface->num_altsetting < 2)
235 		return -ENODEV;
236 	alts = &iface->altsetting[1];
237 	altsd = get_iface_desc(alts);
238 
239 	/* must have an isochronous endpoint for streaming */
240 	if (altsd->bNumEndpoints < 1)
241 		return -ENODEV;
242 	epd = get_endpoint(alts, 0);
243 	if (!usb_endpoint_xfer_isoc(epd))
244 		return -ENODEV;
245 
246 	/* must have format descriptors */
247 	ashd = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL,
248 				       UAC_AS_GENERAL);
249 	fmtd = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL,
250 				       UAC_FORMAT_TYPE);
251 	if (!ashd || ashd->bLength < 7 ||
252 	    !fmtd || fmtd->bLength < 8)
253 		return -ENODEV;
254 
255 	return create_standard_audio_quirk(chip, iface, driver, NULL);
256 }
257 
258 static int create_yamaha_midi_quirk(struct snd_usb_audio *chip,
259 				    struct usb_interface *iface,
260 				    struct usb_driver *driver,
261 				    struct usb_host_interface *alts)
262 {
263 	static const struct snd_usb_audio_quirk yamaha_midi_quirk = {
264 		.type = QUIRK_MIDI_YAMAHA
265 	};
266 	struct usb_midi_in_jack_descriptor *injd;
267 	struct usb_midi_out_jack_descriptor *outjd;
268 
269 	/* must have some valid jack descriptors */
270 	injd = snd_usb_find_csint_desc(alts->extra, alts->extralen,
271 				       NULL, USB_MS_MIDI_IN_JACK);
272 	outjd = snd_usb_find_csint_desc(alts->extra, alts->extralen,
273 					NULL, USB_MS_MIDI_OUT_JACK);
274 	if (!injd && !outjd)
275 		return -ENODEV;
276 	if ((injd && !snd_usb_validate_midi_desc(injd)) ||
277 	    (outjd && !snd_usb_validate_midi_desc(outjd)))
278 		return -ENODEV;
279 	if (injd && (injd->bLength < 5 ||
280 		     (injd->bJackType != USB_MS_EMBEDDED &&
281 		      injd->bJackType != USB_MS_EXTERNAL)))
282 		return -ENODEV;
283 	if (outjd && (outjd->bLength < 6 ||
284 		      (outjd->bJackType != USB_MS_EMBEDDED &&
285 		       outjd->bJackType != USB_MS_EXTERNAL)))
286 		return -ENODEV;
287 	return create_any_midi_quirk(chip, iface, driver, &yamaha_midi_quirk);
288 }
289 
290 static int create_roland_midi_quirk(struct snd_usb_audio *chip,
291 				    struct usb_interface *iface,
292 				    struct usb_driver *driver,
293 				    struct usb_host_interface *alts)
294 {
295 	static const struct snd_usb_audio_quirk roland_midi_quirk = {
296 		.type = QUIRK_MIDI_ROLAND
297 	};
298 	u8 *roland_desc = NULL;
299 
300 	/* might have a vendor-specific descriptor <06 24 F1 02 ...> */
301 	for (;;) {
302 		roland_desc = snd_usb_find_csint_desc(alts->extra,
303 						      alts->extralen,
304 						      roland_desc, 0xf1);
305 		if (!roland_desc)
306 			return -ENODEV;
307 		if (roland_desc[0] < 6 || roland_desc[3] != 2)
308 			continue;
309 		return create_any_midi_quirk(chip, iface, driver,
310 					     &roland_midi_quirk);
311 	}
312 }
313 
314 static int create_std_midi_quirk(struct snd_usb_audio *chip,
315 				 struct usb_interface *iface,
316 				 struct usb_driver *driver,
317 				 struct usb_host_interface *alts)
318 {
319 	struct usb_ms_header_descriptor *mshd;
320 	struct usb_ms_endpoint_descriptor *msepd;
321 
322 	/* must have the MIDIStreaming interface header descriptor*/
323 	mshd = (struct usb_ms_header_descriptor *)alts->extra;
324 	if (alts->extralen < 7 ||
325 	    mshd->bLength < 7 ||
326 	    mshd->bDescriptorType != USB_DT_CS_INTERFACE ||
327 	    mshd->bDescriptorSubtype != USB_MS_HEADER)
328 		return -ENODEV;
329 	/* must have the MIDIStreaming endpoint descriptor*/
330 	msepd = (struct usb_ms_endpoint_descriptor *)alts->endpoint[0].extra;
331 	if (alts->endpoint[0].extralen < 4 ||
332 	    msepd->bLength < 4 ||
333 	    msepd->bDescriptorType != USB_DT_CS_ENDPOINT ||
334 	    msepd->bDescriptorSubtype != UAC_MS_GENERAL ||
335 	    msepd->bNumEmbMIDIJack < 1 ||
336 	    msepd->bNumEmbMIDIJack > 16)
337 		return -ENODEV;
338 
339 	return create_any_midi_quirk(chip, iface, driver, NULL);
340 }
341 
342 static int create_auto_midi_quirk(struct snd_usb_audio *chip,
343 				  struct usb_interface *iface,
344 				  struct usb_driver *driver)
345 {
346 	struct usb_host_interface *alts;
347 	struct usb_interface_descriptor *altsd;
348 	struct usb_endpoint_descriptor *epd;
349 	int err;
350 
351 	alts = &iface->altsetting[0];
352 	altsd = get_iface_desc(alts);
353 
354 	/* must have at least one bulk/interrupt endpoint for streaming */
355 	if (altsd->bNumEndpoints < 1)
356 		return -ENODEV;
357 	epd = get_endpoint(alts, 0);
358 	if (!usb_endpoint_xfer_bulk(epd) &&
359 	    !usb_endpoint_xfer_int(epd))
360 		return -ENODEV;
361 
362 	switch (USB_ID_VENDOR(chip->usb_id)) {
363 	case 0x0499: /* Yamaha */
364 		err = create_yamaha_midi_quirk(chip, iface, driver, alts);
365 		if (err != -ENODEV)
366 			return err;
367 		break;
368 	case 0x0582: /* Roland */
369 		err = create_roland_midi_quirk(chip, iface, driver, alts);
370 		if (err != -ENODEV)
371 			return err;
372 		break;
373 	}
374 
375 	return create_std_midi_quirk(chip, iface, driver, alts);
376 }
377 
378 static int create_autodetect_quirk(struct snd_usb_audio *chip,
379 				   struct usb_interface *iface,
380 				   struct usb_driver *driver,
381 				   const struct snd_usb_audio_quirk *quirk)
382 {
383 	int err;
384 
385 	err = create_auto_pcm_quirk(chip, iface, driver);
386 	if (err == -ENODEV)
387 		err = create_auto_midi_quirk(chip, iface, driver);
388 	return err;
389 }
390 
391 /*
392  * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
393  * The only way to detect the sample rate is by looking at wMaxPacketSize.
394  */
395 static int create_uaxx_quirk(struct snd_usb_audio *chip,
396 			     struct usb_interface *iface,
397 			     struct usb_driver *driver,
398 			     const struct snd_usb_audio_quirk *quirk)
399 {
400 	static const struct audioformat ua_format = {
401 		.formats = SNDRV_PCM_FMTBIT_S24_3LE,
402 		.channels = 2,
403 		.fmt_type = UAC_FORMAT_TYPE_I,
404 		.altsetting = 1,
405 		.altset_idx = 1,
406 		.rates = SNDRV_PCM_RATE_CONTINUOUS,
407 	};
408 	struct usb_host_interface *alts;
409 	struct usb_interface_descriptor *altsd;
410 	struct audioformat *fp;
411 	int err;
412 
413 	/* both PCM and MIDI interfaces have 2 or more altsettings */
414 	if (iface->num_altsetting < 2)
415 		return -ENXIO;
416 	alts = &iface->altsetting[1];
417 	altsd = get_iface_desc(alts);
418 
419 	if (altsd->bNumEndpoints == 2) {
420 		static const struct snd_usb_midi_endpoint_info ua700_ep = {
421 			.out_cables = 0x0003,
422 			.in_cables  = 0x0003
423 		};
424 		static const struct snd_usb_audio_quirk ua700_quirk = {
425 			.type = QUIRK_MIDI_FIXED_ENDPOINT,
426 			.data = &ua700_ep
427 		};
428 		static const struct snd_usb_midi_endpoint_info uaxx_ep = {
429 			.out_cables = 0x0001,
430 			.in_cables  = 0x0001
431 		};
432 		static const struct snd_usb_audio_quirk uaxx_quirk = {
433 			.type = QUIRK_MIDI_FIXED_ENDPOINT,
434 			.data = &uaxx_ep
435 		};
436 		const struct snd_usb_audio_quirk *quirk =
437 			chip->usb_id == USB_ID(0x0582, 0x002b)
438 			? &ua700_quirk : &uaxx_quirk;
439 		return __snd_usbmidi_create(chip->card, iface,
440 					    &chip->midi_list, quirk,
441 					    chip->usb_id,
442 					    &chip->num_rawmidis);
443 	}
444 
445 	if (altsd->bNumEndpoints != 1)
446 		return -ENXIO;
447 
448 	fp = kmemdup(&ua_format, sizeof(*fp), GFP_KERNEL);
449 	if (!fp)
450 		return -ENOMEM;
451 
452 	fp->iface = altsd->bInterfaceNumber;
453 	fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
454 	fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
455 	fp->datainterval = 0;
456 	fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
457 	INIT_LIST_HEAD(&fp->list);
458 
459 	switch (fp->maxpacksize) {
460 	case 0x120:
461 		fp->rate_max = fp->rate_min = 44100;
462 		break;
463 	case 0x138:
464 	case 0x140:
465 		fp->rate_max = fp->rate_min = 48000;
466 		break;
467 	case 0x258:
468 	case 0x260:
469 		fp->rate_max = fp->rate_min = 96000;
470 		break;
471 	default:
472 		usb_audio_err(chip, "unknown sample rate\n");
473 		kfree(fp);
474 		return -ENXIO;
475 	}
476 
477 	err = add_audio_stream_from_fixed_fmt(chip, fp);
478 	if (err < 0) {
479 		list_del(&fp->list); /* unlink for avoiding double-free */
480 		kfree(fp);
481 		return err;
482 	}
483 	usb_set_interface(chip->dev, fp->iface, 0);
484 	return 0;
485 }
486 
487 /*
488  * Create a standard mixer for the specified interface.
489  */
490 static int create_standard_mixer_quirk(struct snd_usb_audio *chip,
491 				       struct usb_interface *iface,
492 				       struct usb_driver *driver,
493 				       const struct snd_usb_audio_quirk *quirk)
494 {
495 	if (quirk->ifnum < 0)
496 		return 0;
497 
498 	return snd_usb_create_mixer(chip, quirk->ifnum);
499 }
500 
501 /*
502  * audio-interface quirks
503  *
504  * returns zero if no standard audio/MIDI parsing is needed.
505  * returns a positive value if standard audio/midi interfaces are parsed
506  * after this.
507  * returns a negative value at error.
508  */
509 int snd_usb_create_quirk(struct snd_usb_audio *chip,
510 			 struct usb_interface *iface,
511 			 struct usb_driver *driver,
512 			 const struct snd_usb_audio_quirk *quirk)
513 {
514 	typedef int (*quirk_func_t)(struct snd_usb_audio *,
515 				    struct usb_interface *,
516 				    struct usb_driver *,
517 				    const struct snd_usb_audio_quirk *);
518 	static const quirk_func_t quirk_funcs[] = {
519 		[QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
520 		[QUIRK_COMPOSITE] = create_composite_quirk,
521 		[QUIRK_AUTODETECT] = create_autodetect_quirk,
522 		[QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
523 		[QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
524 		[QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
525 		[QUIRK_MIDI_ROLAND] = create_any_midi_quirk,
526 		[QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
527 		[QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
528 		[QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
529 		[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
530 		[QUIRK_MIDI_CME] = create_any_midi_quirk,
531 		[QUIRK_MIDI_AKAI] = create_any_midi_quirk,
532 		[QUIRK_MIDI_FTDI] = create_any_midi_quirk,
533 		[QUIRK_MIDI_CH345] = create_any_midi_quirk,
534 		[QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
535 		[QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
536 		[QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
537 		[QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk,
538 	};
539 
540 	if (quirk->type < QUIRK_TYPE_COUNT) {
541 		return quirk_funcs[quirk->type](chip, iface, driver, quirk);
542 	} else {
543 		usb_audio_err(chip, "invalid quirk type %d\n", quirk->type);
544 		return -ENXIO;
545 	}
546 }
547 
548 /*
549  * boot quirks
550  */
551 
552 #define EXTIGY_FIRMWARE_SIZE_OLD 794
553 #define EXTIGY_FIRMWARE_SIZE_NEW 483
554 
555 static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
556 {
557 	struct usb_host_config *config = dev->actconfig;
558 	int err;
559 
560 	if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
561 	    le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
562 		dev_dbg(&dev->dev, "sending Extigy boot sequence...\n");
563 		/* Send message to force it to reconnect with full interface. */
564 		err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
565 				      0x10, 0x43, 0x0001, 0x000a, NULL, 0);
566 		if (err < 0)
567 			dev_dbg(&dev->dev, "error sending boot message: %d\n", err);
568 		err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
569 				&dev->descriptor, sizeof(dev->descriptor));
570 		config = dev->actconfig;
571 		if (err < 0)
572 			dev_dbg(&dev->dev, "error usb_get_descriptor: %d\n", err);
573 		err = usb_reset_configuration(dev);
574 		if (err < 0)
575 			dev_dbg(&dev->dev, "error usb_reset_configuration: %d\n", err);
576 		dev_dbg(&dev->dev, "extigy_boot: new boot length = %d\n",
577 			    le16_to_cpu(get_cfg_desc(config)->wTotalLength));
578 		return -ENODEV; /* quit this anyway */
579 	}
580 	return 0;
581 }
582 
583 static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
584 {
585 	u8 buf = 1;
586 
587 	snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
588 			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
589 			0, 0, &buf, 1);
590 	if (buf == 0) {
591 		snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
592 				USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
593 				1, 2000, NULL, 0);
594 		return -ENODEV;
595 	}
596 	return 0;
597 }
598 
599 static int snd_usb_fasttrackpro_boot_quirk(struct usb_device *dev)
600 {
601 	int err;
602 
603 	if (dev->actconfig->desc.bConfigurationValue == 1) {
604 		dev_info(&dev->dev,
605 			   "Fast Track Pro switching to config #2\n");
606 		/* This function has to be available by the usb core module.
607 		 * if it is not avialable the boot quirk has to be left out
608 		 * and the configuration has to be set by udev or hotplug
609 		 * rules
610 		 */
611 		err = usb_driver_set_configuration(dev, 2);
612 		if (err < 0)
613 			dev_dbg(&dev->dev,
614 				"error usb_driver_set_configuration: %d\n",
615 				err);
616 		/* Always return an error, so that we stop creating a device
617 		   that will just be destroyed and recreated with a new
618 		   configuration */
619 		return -ENODEV;
620 	} else
621 		dev_info(&dev->dev, "Fast Track Pro config OK\n");
622 
623 	return 0;
624 }
625 
626 /*
627  * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
628  * documented in the device's data sheet.
629  */
630 static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
631 {
632 	u8 buf[4];
633 	buf[0] = 0x20;
634 	buf[1] = value & 0xff;
635 	buf[2] = (value >> 8) & 0xff;
636 	buf[3] = reg;
637 	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
638 			       USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
639 			       0, 0, &buf, 4);
640 }
641 
642 static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
643 {
644 	/*
645 	 * Enable line-out driver mode, set headphone source to front
646 	 * channels, enable stereo mic.
647 	 */
648 	return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
649 }
650 
651 /*
652  * CM6206 registers from the CM6206 datasheet rev 2.1
653  */
654 #define CM6206_REG0_DMA_MASTER BIT(15)
655 #define CM6206_REG0_SPDIFO_RATE_48K (2 << 12)
656 #define CM6206_REG0_SPDIFO_RATE_96K (7 << 12)
657 /* Bit 4 thru 11 is the S/PDIF category code */
658 #define CM6206_REG0_SPDIFO_CAT_CODE_GENERAL (0 << 4)
659 #define CM6206_REG0_SPDIFO_EMPHASIS_CD BIT(3)
660 #define CM6206_REG0_SPDIFO_COPYRIGHT_NA BIT(2)
661 #define CM6206_REG0_SPDIFO_NON_AUDIO BIT(1)
662 #define CM6206_REG0_SPDIFO_PRO_FORMAT BIT(0)
663 
664 #define CM6206_REG1_TEST_SEL_CLK BIT(14)
665 #define CM6206_REG1_PLLBIN_EN BIT(13)
666 #define CM6206_REG1_SOFT_MUTE_EN BIT(12)
667 #define CM6206_REG1_GPIO4_OUT BIT(11)
668 #define CM6206_REG1_GPIO4_OE BIT(10)
669 #define CM6206_REG1_GPIO3_OUT BIT(9)
670 #define CM6206_REG1_GPIO3_OE BIT(8)
671 #define CM6206_REG1_GPIO2_OUT BIT(7)
672 #define CM6206_REG1_GPIO2_OE BIT(6)
673 #define CM6206_REG1_GPIO1_OUT BIT(5)
674 #define CM6206_REG1_GPIO1_OE BIT(4)
675 #define CM6206_REG1_SPDIFO_INVALID BIT(3)
676 #define CM6206_REG1_SPDIF_LOOP_EN BIT(2)
677 #define CM6206_REG1_SPDIFO_DIS BIT(1)
678 #define CM6206_REG1_SPDIFI_MIX BIT(0)
679 
680 #define CM6206_REG2_DRIVER_ON BIT(15)
681 #define CM6206_REG2_HEADP_SEL_SIDE_CHANNELS (0 << 13)
682 #define CM6206_REG2_HEADP_SEL_SURROUND_CHANNELS (1 << 13)
683 #define CM6206_REG2_HEADP_SEL_CENTER_SUBW (2 << 13)
684 #define CM6206_REG2_HEADP_SEL_FRONT_CHANNELS (3 << 13)
685 #define CM6206_REG2_MUTE_HEADPHONE_RIGHT BIT(12)
686 #define CM6206_REG2_MUTE_HEADPHONE_LEFT BIT(11)
687 #define CM6206_REG2_MUTE_REAR_SURROUND_RIGHT BIT(10)
688 #define CM6206_REG2_MUTE_REAR_SURROUND_LEFT BIT(9)
689 #define CM6206_REG2_MUTE_SIDE_SURROUND_RIGHT BIT(8)
690 #define CM6206_REG2_MUTE_SIDE_SURROUND_LEFT BIT(7)
691 #define CM6206_REG2_MUTE_SUBWOOFER BIT(6)
692 #define CM6206_REG2_MUTE_CENTER BIT(5)
693 #define CM6206_REG2_MUTE_RIGHT_FRONT BIT(3)
694 #define CM6206_REG2_MUTE_LEFT_FRONT BIT(3)
695 #define CM6206_REG2_EN_BTL BIT(2)
696 #define CM6206_REG2_MCUCLKSEL_1_5_MHZ (0)
697 #define CM6206_REG2_MCUCLKSEL_3_MHZ (1)
698 #define CM6206_REG2_MCUCLKSEL_6_MHZ (2)
699 #define CM6206_REG2_MCUCLKSEL_12_MHZ (3)
700 
701 /* Bit 11..13 sets the sensitivity to FLY tuner volume control VP/VD signal */
702 #define CM6206_REG3_FLYSPEED_DEFAULT (2 << 11)
703 #define CM6206_REG3_VRAP25EN BIT(10)
704 #define CM6206_REG3_MSEL1 BIT(9)
705 #define CM6206_REG3_SPDIFI_RATE_44_1K BIT(0 << 7)
706 #define CM6206_REG3_SPDIFI_RATE_48K BIT(2 << 7)
707 #define CM6206_REG3_SPDIFI_RATE_32K BIT(3 << 7)
708 #define CM6206_REG3_PINSEL BIT(6)
709 #define CM6206_REG3_FOE BIT(5)
710 #define CM6206_REG3_ROE BIT(4)
711 #define CM6206_REG3_CBOE BIT(3)
712 #define CM6206_REG3_LOSE BIT(2)
713 #define CM6206_REG3_HPOE BIT(1)
714 #define CM6206_REG3_SPDIFI_CANREC BIT(0)
715 
716 #define CM6206_REG5_DA_RSTN BIT(13)
717 #define CM6206_REG5_AD_RSTN BIT(12)
718 #define CM6206_REG5_SPDIFO_AD2SPDO BIT(12)
719 #define CM6206_REG5_SPDIFO_SEL_FRONT (0 << 9)
720 #define CM6206_REG5_SPDIFO_SEL_SIDE_SUR (1 << 9)
721 #define CM6206_REG5_SPDIFO_SEL_CEN_LFE (2 << 9)
722 #define CM6206_REG5_SPDIFO_SEL_REAR_SUR (3 << 9)
723 #define CM6206_REG5_CODECM BIT(8)
724 #define CM6206_REG5_EN_HPF BIT(7)
725 #define CM6206_REG5_T_SEL_DSDA4 BIT(6)
726 #define CM6206_REG5_T_SEL_DSDA3 BIT(5)
727 #define CM6206_REG5_T_SEL_DSDA2 BIT(4)
728 #define CM6206_REG5_T_SEL_DSDA1 BIT(3)
729 #define CM6206_REG5_T_SEL_DSDAD_NORMAL 0
730 #define CM6206_REG5_T_SEL_DSDAD_FRONT 4
731 #define CM6206_REG5_T_SEL_DSDAD_S_SURROUND 5
732 #define CM6206_REG5_T_SEL_DSDAD_CEN_LFE 6
733 #define CM6206_REG5_T_SEL_DSDAD_R_SURROUND 7
734 
735 static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
736 {
737 	int err  = 0, reg;
738 	int val[] = {
739 		/*
740 		 * Values here are chosen based on sniffing USB traffic
741 		 * under Windows.
742 		 *
743 		 * REG0: DAC is master, sample rate 48kHz, no copyright
744 		 */
745 		CM6206_REG0_SPDIFO_RATE_48K |
746 		CM6206_REG0_SPDIFO_COPYRIGHT_NA,
747 		/*
748 		 * REG1: PLL binary search enable, soft mute enable.
749 		 */
750 		CM6206_REG1_PLLBIN_EN |
751 		CM6206_REG1_SOFT_MUTE_EN,
752 		/*
753 		 * REG2: enable output drivers,
754 		 * select front channels to the headphone output,
755 		 * then mute the headphone channels, run the MCU
756 		 * at 1.5 MHz.
757 		 */
758 		CM6206_REG2_DRIVER_ON |
759 		CM6206_REG2_HEADP_SEL_FRONT_CHANNELS |
760 		CM6206_REG2_MUTE_HEADPHONE_RIGHT |
761 		CM6206_REG2_MUTE_HEADPHONE_LEFT,
762 		/*
763 		 * REG3: default flyspeed, set 2.5V mic bias
764 		 * enable all line out ports and enable SPDIF
765 		 */
766 		CM6206_REG3_FLYSPEED_DEFAULT |
767 		CM6206_REG3_VRAP25EN |
768 		CM6206_REG3_FOE |
769 		CM6206_REG3_ROE |
770 		CM6206_REG3_CBOE |
771 		CM6206_REG3_LOSE |
772 		CM6206_REG3_HPOE |
773 		CM6206_REG3_SPDIFI_CANREC,
774 		/* REG4 is just a bunch of GPIO lines */
775 		0x0000,
776 		/* REG5: de-assert AD/DA reset signals */
777 		CM6206_REG5_DA_RSTN |
778 		CM6206_REG5_AD_RSTN };
779 
780 	for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
781 		err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
782 		if (err < 0)
783 			return err;
784 	}
785 
786 	return err;
787 }
788 
789 /* quirk for Plantronics GameCom 780 with CM6302 chip */
790 static int snd_usb_gamecon780_boot_quirk(struct usb_device *dev)
791 {
792 	/* set the initial volume and don't change; other values are either
793 	 * too loud or silent due to firmware bug (bko#65251)
794 	 */
795 	u8 buf[2] = { 0x74, 0xe3 };
796 	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
797 			USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
798 			UAC_FU_VOLUME << 8, 9 << 8, buf, 2);
799 }
800 
801 /*
802  * Novation Twitch DJ controller
803  * Focusrite Novation Saffire 6 USB audio card
804  */
805 static int snd_usb_novation_boot_quirk(struct usb_device *dev)
806 {
807 	/* preemptively set up the device because otherwise the
808 	 * raw MIDI endpoints are not active */
809 	usb_set_interface(dev, 0, 1);
810 	return 0;
811 }
812 
813 /*
814  * This call will put the synth in "USB send" mode, i.e it will send MIDI
815  * messages through USB (this is disabled at startup). The synth will
816  * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
817  * sign on its LCD. Values here are chosen based on sniffing USB traffic
818  * under Windows.
819  */
820 static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
821 {
822 	int err, actual_length;
823 	/* "midi send" enable */
824 	static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
825 	void *buf;
826 
827 	if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x05)))
828 		return -EINVAL;
829 	buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
830 	if (!buf)
831 		return -ENOMEM;
832 	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
833 			ARRAY_SIZE(seq), &actual_length, 1000);
834 	kfree(buf);
835 	if (err < 0)
836 		return err;
837 
838 	return 0;
839 }
840 
841 /*
842  * Some sound cards from Native Instruments are in fact compliant to the USB
843  * audio standard of version 2 and other approved USB standards, even though
844  * they come up as vendor-specific device when first connected.
845  *
846  * However, they can be told to come up with a new set of descriptors
847  * upon their next enumeration, and the interfaces announced by the new
848  * descriptors will then be handled by the kernel's class drivers. As the
849  * product ID will also change, no further checks are required.
850  */
851 
852 static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
853 {
854 	int ret;
855 
856 	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
857 				  0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
858 				  1, 0, NULL, 0, 1000);
859 
860 	if (ret < 0)
861 		return ret;
862 
863 	usb_reset_device(dev);
864 
865 	/* return -EAGAIN, so the creation of an audio interface for this
866 	 * temporary device is aborted. The device will reconnect with a
867 	 * new product ID */
868 	return -EAGAIN;
869 }
870 
871 static void mbox2_setup_48_24_magic(struct usb_device *dev)
872 {
873 	u8 srate[3];
874 	u8 temp[12];
875 
876 	/* Choose 48000Hz permanently */
877 	srate[0] = 0x80;
878 	srate[1] = 0xbb;
879 	srate[2] = 0x00;
880 
881 	/* Send the magic! */
882 	snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
883 		0x01, 0x22, 0x0100, 0x0085, &temp, 0x0003);
884 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
885 		0x81, 0xa2, 0x0100, 0x0085, &srate, 0x0003);
886 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
887 		0x81, 0xa2, 0x0100, 0x0086, &srate, 0x0003);
888 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
889 		0x81, 0xa2, 0x0100, 0x0003, &srate, 0x0003);
890 	return;
891 }
892 
893 /* Digidesign Mbox 2 needs to load firmware onboard
894  * and driver must wait a few seconds for initialisation.
895  */
896 
897 #define MBOX2_FIRMWARE_SIZE    646
898 #define MBOX2_BOOT_LOADING     0x01 /* Hard coded into the device */
899 #define MBOX2_BOOT_READY       0x02 /* Hard coded into the device */
900 
901 static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
902 {
903 	struct usb_host_config *config = dev->actconfig;
904 	int err;
905 	u8 bootresponse[0x12];
906 	int fwsize;
907 	int count;
908 
909 	fwsize = le16_to_cpu(get_cfg_desc(config)->wTotalLength);
910 
911 	if (fwsize != MBOX2_FIRMWARE_SIZE) {
912 		dev_err(&dev->dev, "Invalid firmware size=%d.\n", fwsize);
913 		return -ENODEV;
914 	}
915 
916 	dev_dbg(&dev->dev, "Sending Digidesign Mbox 2 boot sequence...\n");
917 
918 	count = 0;
919 	bootresponse[0] = MBOX2_BOOT_LOADING;
920 	while ((bootresponse[0] == MBOX2_BOOT_LOADING) && (count < 10)) {
921 		msleep(500); /* 0.5 second delay */
922 		snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
923 			/* Control magic - load onboard firmware */
924 			0x85, 0xc0, 0x0001, 0x0000, &bootresponse, 0x0012);
925 		if (bootresponse[0] == MBOX2_BOOT_READY)
926 			break;
927 		dev_dbg(&dev->dev, "device not ready, resending boot sequence...\n");
928 		count++;
929 	}
930 
931 	if (bootresponse[0] != MBOX2_BOOT_READY) {
932 		dev_err(&dev->dev, "Unknown bootresponse=%d, or timed out, ignoring device.\n", bootresponse[0]);
933 		return -ENODEV;
934 	}
935 
936 	dev_dbg(&dev->dev, "device initialised!\n");
937 
938 	err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
939 		&dev->descriptor, sizeof(dev->descriptor));
940 	config = dev->actconfig;
941 	if (err < 0)
942 		dev_dbg(&dev->dev, "error usb_get_descriptor: %d\n", err);
943 
944 	err = usb_reset_configuration(dev);
945 	if (err < 0)
946 		dev_dbg(&dev->dev, "error usb_reset_configuration: %d\n", err);
947 	dev_dbg(&dev->dev, "mbox2_boot: new boot length = %d\n",
948 		le16_to_cpu(get_cfg_desc(config)->wTotalLength));
949 
950 	mbox2_setup_48_24_magic(dev);
951 
952 	dev_info(&dev->dev, "Digidesign Mbox 2: 24bit 48kHz");
953 
954 	return 0; /* Successful boot */
955 }
956 
957 static int snd_usb_axefx3_boot_quirk(struct usb_device *dev)
958 {
959 	int err;
960 
961 	dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n");
962 
963 	/* If the Axe-Fx III has not fully booted, it will timeout when trying
964 	 * to enable the audio streaming interface. A more generous timeout is
965 	 * used here to detect when the Axe-Fx III has finished booting as the
966 	 * set interface message will be acked once it has
967 	 */
968 	err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
969 				USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
970 				1, 1, NULL, 0, 120000);
971 	if (err < 0) {
972 		dev_err(&dev->dev,
973 			"failed waiting for Axe-Fx III to boot: %d\n", err);
974 		return err;
975 	}
976 
977 	dev_dbg(&dev->dev, "Axe-Fx III is now ready\n");
978 
979 	err = usb_set_interface(dev, 1, 0);
980 	if (err < 0)
981 		dev_dbg(&dev->dev,
982 			"error stopping Axe-Fx III interface: %d\n", err);
983 
984 	return 0;
985 }
986 
987 static void mbox3_setup_defaults(struct usb_device *dev)
988 {
989 	/* The Mbox 3 is "little endian" */
990 	/* max volume is: 0x0000. */
991 	/* min volume is: 0x0080 (shown in little endian form) */
992 
993 	u8 com_buff[2];
994 
995 	/* Deactivate Tuner */
996 	/* on  = 0x01*/
997 	/* off = 0x00*/
998 	com_buff[0] = 0x00;
999 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1000 		0x01, 0x21, 0x0003, 0x2001, &com_buff, 1);
1001 
1002 	/* Set clock source to Internal (as opposed to S/PDIF) */
1003 	/* Internal  = 0x01*/
1004 	/* S/PDIF    = 0x02*/
1005 	com_buff[0] = 0x01;
1006 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1007 			1, 0x21, 0x0100, 0x8001, &com_buff, 1);
1008 
1009 	/* Mute the hardware loopbacks to start the device in a known state. */
1010 	com_buff[0] = 0x00;
1011 	com_buff[1] = 0x80;
1012 	/* Analogue input 1 left channel: */
1013 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1014 			1, 0x21, 0x0110, 0x4001, &com_buff, 2);
1015 	/* Analogue input 1 right channel: */
1016 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1017 			1, 0x21, 0x0111, 0x4001, &com_buff, 2);
1018 	/* Analogue input 2 left channel: */
1019 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1020 			1, 0x21, 0x0114, 0x4001, &com_buff, 2);
1021 	/* Analogue input 2 right channel: */
1022 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1023 			1, 0x21, 0x0115, 0x4001, &com_buff, 2);
1024 	/* Analogue input 3 left channel: */
1025 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1026 			1, 0x21, 0x0118, 0x4001, &com_buff, 2);
1027 	/* Analogue input 3 right channel: */
1028 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1029 			1, 0x21, 0x0119, 0x4001, &com_buff, 2);
1030 	/* Analogue input 4 left channel: */
1031 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1032 			1, 0x21, 0x011c, 0x4001, &com_buff, 2);
1033 	/* Analogue input 4 right channel: */
1034 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1035 			1, 0x21, 0x011d, 0x4001, &com_buff, 2);
1036 
1037 	/* Set software sends to output */
1038 	com_buff[0] = 0x00;
1039 	com_buff[1] = 0x00;
1040 	/* Analogue software return 1 left channel: */
1041 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1042 			1, 0x21, 0x0100, 0x4001, &com_buff, 2);
1043 	com_buff[0] = 0x00;
1044 	com_buff[1] = 0x80;
1045 	/* Analogue software return 1 right channel: */
1046 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1047 			1, 0x21, 0x0101, 0x4001, &com_buff, 2);
1048 	com_buff[0] = 0x00;
1049 	com_buff[1] = 0x80;
1050 	/* Analogue software return 2 left channel: */
1051 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1052 			1, 0x21, 0x0104, 0x4001, &com_buff, 2);
1053 	com_buff[0] = 0x00;
1054 	com_buff[1] = 0x00;
1055 	/* Analogue software return 2 right channel: */
1056 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1057 			1, 0x21, 0x0105, 0x4001, &com_buff, 2);
1058 
1059 	com_buff[0] = 0x00;
1060 	com_buff[1] = 0x80;
1061 	/* Analogue software return 3 left channel: */
1062 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1063 			1, 0x21, 0x0108, 0x4001, &com_buff, 2);
1064 	/* Analogue software return 3 right channel: */
1065 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1066 			1, 0x21, 0x0109, 0x4001, &com_buff, 2);
1067 	/* Analogue software return 4 left channel: */
1068 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1069 			1, 0x21, 0x010c, 0x4001, &com_buff, 2);
1070 	/* Analogue software return 4 right channel: */
1071 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1072 			1, 0x21, 0x010d, 0x4001, &com_buff, 2);
1073 
1074 	/* Return to muting sends */
1075 	com_buff[0] = 0x00;
1076 	com_buff[1] = 0x80;
1077 	/* Analogue fx return left channel: */
1078 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1079 			1, 0x21, 0x0120, 0x4001, &com_buff, 2);
1080 	/* Analogue fx return right channel: */
1081 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1082 			1, 0x21, 0x0121, 0x4001, &com_buff, 2);
1083 
1084 	/* Analogue software input 1 fx send: */
1085 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1086 			1, 0x21, 0x0100, 0x4201, &com_buff, 2);
1087 	/* Analogue software input 2 fx send: */
1088 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1089 			1, 0x21, 0x0101, 0x4201, &com_buff, 2);
1090 	/* Analogue software input 3 fx send: */
1091 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1092 			1, 0x21, 0x0102, 0x4201, &com_buff, 2);
1093 	/* Analogue software input 4 fx send: */
1094 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1095 			1, 0x21, 0x0103, 0x4201, &com_buff, 2);
1096 	/* Analogue input 1 fx send: */
1097 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1098 			1, 0x21, 0x0104, 0x4201, &com_buff, 2);
1099 	/* Analogue input 2 fx send: */
1100 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1101 			1, 0x21, 0x0105, 0x4201, &com_buff, 2);
1102 	/* Analogue input 3 fx send: */
1103 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1104 			1, 0x21, 0x0106, 0x4201, &com_buff, 2);
1105 	/* Analogue input 4 fx send: */
1106 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1107 			1, 0x21, 0x0107, 0x4201, &com_buff, 2);
1108 
1109 	/* Toggle allowing host control */
1110 	/* Not needed
1111 	com_buff[0] = 0x02;
1112 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1113 			3, 0x21, 0x0000, 0x2001, &com_buff, 1);
1114 	 */
1115 
1116 	/* Do not dim fx returns */
1117 	com_buff[0] = 0x00;
1118 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1119 			3, 0x21, 0x0002, 0x2001, &com_buff, 1);
1120 
1121 	/* Do not set fx returns to mono */
1122 	com_buff[0] = 0x00;
1123 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1124 			3, 0x21, 0x0001, 0x2001, &com_buff, 1);
1125 
1126 	/* Mute the S/PDIF hardware loopback
1127 	 * same odd volume logic here as above
1128 	 */
1129 	com_buff[0] = 0x00;
1130 	com_buff[1] = 0x80;
1131 	/* S/PDIF hardware input 1 left channel */
1132 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1133 			1, 0x21, 0x0112, 0x4001, &com_buff, 2);
1134 	/* S/PDIF hardware input 1 right channel */
1135 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1136 			1, 0x21, 0x0113, 0x4001, &com_buff, 2);
1137 	/* S/PDIF hardware input 2 left channel */
1138 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1139 			1, 0x21, 0x0116, 0x4001, &com_buff, 2);
1140 	/* S/PDIF hardware input 2 right channel */
1141 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1142 			1, 0x21, 0x0117, 0x4001, &com_buff, 2);
1143 	/* S/PDIF hardware input 3 left channel */
1144 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1145 			1, 0x21, 0x011a, 0x4001, &com_buff, 2);
1146 	/* S/PDIF hardware input 3 right channel */
1147 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1148 			1, 0x21, 0x011b, 0x4001, &com_buff, 2);
1149 	/* S/PDIF hardware input 4 left channel */
1150 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1151 			1, 0x21, 0x011e, 0x4001, &com_buff, 2);
1152 	/* S/PDIF hardware input 4 right channel */
1153 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1154 			1, 0x21, 0x011f, 0x4001, &com_buff, 2);
1155 	/* S/PDIF software return 1 left channel */
1156 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1157 			1, 0x21, 0x0102, 0x4001, &com_buff, 2);
1158 	/* S/PDIF software return 1 right channel */
1159 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1160 			1, 0x21, 0x0103, 0x4001, &com_buff, 2);
1161 	/* S/PDIF software return 2 left channel */
1162 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1163 			1, 0x21, 0x0106, 0x4001, &com_buff, 2);
1164 	/* S/PDIF software return 2 right channel */
1165 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1166 			1, 0x21, 0x0107, 0x4001, &com_buff, 2);
1167 
1168 	com_buff[0] = 0x00;
1169 	com_buff[1] = 0x00;
1170 	/* S/PDIF software return 3 left channel */
1171 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1172 			1, 0x21, 0x010a, 0x4001, &com_buff, 2);
1173 
1174 	com_buff[0] = 0x00;
1175 	com_buff[1] = 0x80;
1176 	/* S/PDIF software return 3 right channel */
1177 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1178 			1, 0x21, 0x010b, 0x4001, &com_buff, 2);
1179 	/* S/PDIF software return 4 left channel */
1180 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1181 			1, 0x21, 0x010e, 0x4001, &com_buff, 2);
1182 
1183 	com_buff[0] = 0x00;
1184 	com_buff[1] = 0x00;
1185 	/* S/PDIF software return 4 right channel */
1186 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1187 			1, 0x21, 0x010f, 0x4001, &com_buff, 2);
1188 
1189 	com_buff[0] = 0x00;
1190 	com_buff[1] = 0x80;
1191 	/* S/PDIF fx returns left channel */
1192 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1193 			1, 0x21, 0x0122, 0x4001, &com_buff, 2);
1194 	/* S/PDIF fx returns right channel */
1195 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1196 			1, 0x21, 0x0123, 0x4001, &com_buff, 2);
1197 
1198 	/* Set the dropdown "Effect" to the first option */
1199 	/* Room1  = 0x00 */
1200 	/* Room2  = 0x01 */
1201 	/* Room3  = 0x02 */
1202 	/* Hall 1 = 0x03 */
1203 	/* Hall 2 = 0x04 */
1204 	/* Plate  = 0x05 */
1205 	/* Delay  = 0x06 */
1206 	/* Echo   = 0x07 */
1207 	com_buff[0] = 0x00;
1208 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1209 			1, 0x21, 0x0200, 0x4301, &com_buff, 1);	/* max is 0xff */
1210 	/* min is 0x00 */
1211 
1212 
1213 	/* Set the effect duration to 0 */
1214 	/* max is 0xffff */
1215 	/* min is 0x0000 */
1216 	com_buff[0] = 0x00;
1217 	com_buff[1] = 0x00;
1218 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1219 			1, 0x21, 0x0400, 0x4301, &com_buff, 2);
1220 
1221 	/* Set the effect volume and feedback to 0 */
1222 	/* max is 0xff */
1223 	/* min is 0x00 */
1224 	com_buff[0] = 0x00;
1225 	/* feedback: */
1226 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1227 			1, 0x21, 0x0500, 0x4301, &com_buff, 1);
1228 	/* volume: */
1229 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1230 			1, 0x21, 0x0300, 0x4301, &com_buff, 1);
1231 
1232 	/* Set soft button hold duration */
1233 	/* 0x03 = 250ms */
1234 	/* 0x05 = 500ms DEFAULT */
1235 	/* 0x08 = 750ms */
1236 	/* 0x0a = 1sec */
1237 	com_buff[0] = 0x05;
1238 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1239 			3, 0x21, 0x0005, 0x2001, &com_buff, 1);
1240 
1241 	/* Use dim LEDs for button of state */
1242 	com_buff[0] = 0x00;
1243 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1244 			3, 0x21, 0x0004, 0x2001, &com_buff, 1);
1245 }
1246 
1247 #define MBOX3_DESCRIPTOR_SIZE	464
1248 
1249 static int snd_usb_mbox3_boot_quirk(struct usb_device *dev)
1250 {
1251 	struct usb_host_config *config = dev->actconfig;
1252 	int err;
1253 	int descriptor_size;
1254 
1255 	descriptor_size = le16_to_cpu(get_cfg_desc(config)->wTotalLength);
1256 
1257 	if (descriptor_size != MBOX3_DESCRIPTOR_SIZE) {
1258 		dev_err(&dev->dev, "MBOX3: Invalid descriptor size=%d.\n", descriptor_size);
1259 		return -ENODEV;
1260 	}
1261 
1262 	dev_dbg(&dev->dev, "MBOX3: device initialised!\n");
1263 
1264 	err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
1265 		&dev->descriptor, sizeof(dev->descriptor));
1266 	config = dev->actconfig;
1267 	if (err < 0)
1268 		dev_dbg(&dev->dev, "MBOX3: error usb_get_descriptor: %d\n", err);
1269 
1270 	err = usb_reset_configuration(dev);
1271 	if (err < 0)
1272 		dev_dbg(&dev->dev, "MBOX3: error usb_reset_configuration: %d\n", err);
1273 
1274 	dev_dbg(&dev->dev, "MBOX3: new boot length = %d\n",
1275 		le16_to_cpu(get_cfg_desc(config)->wTotalLength));
1276 
1277 	mbox3_setup_defaults(dev);
1278 	dev_info(&dev->dev, "MBOX3: Initialized.");
1279 
1280 	return 0; /* Successful boot */
1281 }
1282 
1283 #define MICROBOOK_BUF_SIZE 128
1284 
1285 static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
1286 						int buf_size, int *length)
1287 {
1288 	int err, actual_length;
1289 
1290 	if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x01)))
1291 		return -EINVAL;
1292 	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length,
1293 				&actual_length, 1000);
1294 	if (err < 0)
1295 		return err;
1296 
1297 	print_hex_dump(KERN_DEBUG, "MicroBookII snd: ", DUMP_PREFIX_NONE, 16, 1,
1298 		       buf, actual_length, false);
1299 
1300 	memset(buf, 0, buf_size);
1301 
1302 	if (usb_pipe_type_check(dev, usb_rcvintpipe(dev, 0x82)))
1303 		return -EINVAL;
1304 	err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size,
1305 				&actual_length, 1000);
1306 	if (err < 0)
1307 		return err;
1308 
1309 	print_hex_dump(KERN_DEBUG, "MicroBookII rcv: ", DUMP_PREFIX_NONE, 16, 1,
1310 		       buf, actual_length, false);
1311 
1312 	*length = actual_length;
1313 	return 0;
1314 }
1315 
1316 static int snd_usb_motu_microbookii_boot_quirk(struct usb_device *dev)
1317 {
1318 	int err, actual_length, poll_attempts = 0;
1319 	static const u8 set_samplerate_seq[] = { 0x00, 0x00, 0x00, 0x00,
1320 						 0x00, 0x00, 0x0b, 0x14,
1321 						 0x00, 0x00, 0x00, 0x01 };
1322 	static const u8 poll_ready_seq[] = { 0x00, 0x04, 0x00, 0x00,
1323 					     0x00, 0x00, 0x0b, 0x18 };
1324 	u8 *buf = kzalloc(MICROBOOK_BUF_SIZE, GFP_KERNEL);
1325 
1326 	if (!buf)
1327 		return -ENOMEM;
1328 
1329 	dev_info(&dev->dev, "Waiting for MOTU Microbook II to boot up...\n");
1330 
1331 	/* First we tell the device which sample rate to use. */
1332 	memcpy(buf, set_samplerate_seq, sizeof(set_samplerate_seq));
1333 	actual_length = sizeof(set_samplerate_seq);
1334 	err = snd_usb_motu_microbookii_communicate(dev, buf, MICROBOOK_BUF_SIZE,
1335 						   &actual_length);
1336 
1337 	if (err < 0) {
1338 		dev_err(&dev->dev,
1339 			"failed setting the sample rate for Motu MicroBook II: %d\n",
1340 			err);
1341 		goto free_buf;
1342 	}
1343 
1344 	/* Then we poll every 100 ms until the device informs of its readiness. */
1345 	while (true) {
1346 		if (++poll_attempts > 100) {
1347 			dev_err(&dev->dev,
1348 				"failed booting Motu MicroBook II: timeout\n");
1349 			err = -ENODEV;
1350 			goto free_buf;
1351 		}
1352 
1353 		memset(buf, 0, MICROBOOK_BUF_SIZE);
1354 		memcpy(buf, poll_ready_seq, sizeof(poll_ready_seq));
1355 
1356 		actual_length = sizeof(poll_ready_seq);
1357 		err = snd_usb_motu_microbookii_communicate(
1358 			dev, buf, MICROBOOK_BUF_SIZE, &actual_length);
1359 		if (err < 0) {
1360 			dev_err(&dev->dev,
1361 				"failed booting Motu MicroBook II: communication error %d\n",
1362 				err);
1363 			goto free_buf;
1364 		}
1365 
1366 		/* the device signals its readiness through a message of the
1367 		 * form
1368 		 *           XX 06 00 00 00 00 0b 18  00 00 00 01
1369 		 * If the device is not yet ready to accept audio data, the
1370 		 * last byte of that sequence is 00.
1371 		 */
1372 		if (actual_length == 12 && buf[actual_length - 1] == 1)
1373 			break;
1374 
1375 		msleep(100);
1376 	}
1377 
1378 	dev_info(&dev->dev, "MOTU MicroBook II ready\n");
1379 
1380 free_buf:
1381 	kfree(buf);
1382 	return err;
1383 }
1384 
1385 static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev)
1386 {
1387 	msleep(4000);
1388 
1389 	return 0;
1390 }
1391 
1392 static int snd_usb_rme_digiface_boot_quirk(struct usb_device *dev)
1393 {
1394 	/* Disable mixer, internal clock, all outputs ADAT, 48kHz, TMS off */
1395 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1396 			16, 0x40, 0x2410, 0x7fff, NULL, 0);
1397 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1398 			18, 0x40, 0x0104, 0xffff, NULL, 0);
1399 
1400 	/* Disable loopback for all inputs */
1401 	for (int ch = 0; ch < 32; ch++)
1402 		snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1403 				22, 0x40, 0x400, ch, NULL, 0);
1404 
1405 	/* Unity gain for all outputs */
1406 	for (int ch = 0; ch < 34; ch++)
1407 		snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
1408 				21, 0x40, 0x9000, 0x100 + ch, NULL, 0);
1409 
1410 	return 0;
1411 }
1412 
1413 /*
1414  * Setup quirks
1415  */
1416 #define MAUDIO_SET		0x01 /* parse device_setup */
1417 #define MAUDIO_SET_COMPATIBLE	0x80 /* use only "win-compatible" interfaces */
1418 #define MAUDIO_SET_DTS		0x02 /* enable DTS Digital Output */
1419 #define MAUDIO_SET_96K		0x04 /* 48-96kHz rate if set, 8-48kHz otherwise */
1420 #define MAUDIO_SET_24B		0x08 /* 24bits sample if set, 16bits otherwise */
1421 #define MAUDIO_SET_DI		0x10 /* enable Digital Input */
1422 #define MAUDIO_SET_MASK		0x1f /* bit mask for setup value */
1423 #define MAUDIO_SET_24B_48K_DI	 0x19 /* 24bits+48kHz+Digital Input */
1424 #define MAUDIO_SET_24B_48K_NOTDI 0x09 /* 24bits+48kHz+No Digital Input */
1425 #define MAUDIO_SET_16B_48K_DI	 0x11 /* 16bits+48kHz+Digital Input */
1426 #define MAUDIO_SET_16B_48K_NOTDI 0x01 /* 16bits+48kHz+No Digital Input */
1427 
1428 static int quattro_skip_setting_quirk(struct snd_usb_audio *chip,
1429 				      int iface, int altno)
1430 {
1431 	/* Reset ALL ifaces to 0 altsetting.
1432 	 * Call it for every possible altsetting of every interface.
1433 	 */
1434 	usb_set_interface(chip->dev, iface, 0);
1435 	if (chip->setup & MAUDIO_SET) {
1436 		if (chip->setup & MAUDIO_SET_COMPATIBLE) {
1437 			if (iface != 1 && iface != 2)
1438 				return 1; /* skip all interfaces but 1 and 2 */
1439 		} else {
1440 			unsigned int mask;
1441 			if (iface == 1 || iface == 2)
1442 				return 1; /* skip interfaces 1 and 2 */
1443 			if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
1444 				return 1; /* skip this altsetting */
1445 			mask = chip->setup & MAUDIO_SET_MASK;
1446 			if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
1447 				return 1; /* skip this altsetting */
1448 			if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
1449 				return 1; /* skip this altsetting */
1450 			if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 4)
1451 				return 1; /* skip this altsetting */
1452 		}
1453 	}
1454 	usb_audio_dbg(chip,
1455 		    "using altsetting %d for interface %d config %d\n",
1456 		    altno, iface, chip->setup);
1457 	return 0; /* keep this altsetting */
1458 }
1459 
1460 static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
1461 					 int iface,
1462 					 int altno)
1463 {
1464 	/* Reset ALL ifaces to 0 altsetting.
1465 	 * Call it for every possible altsetting of every interface.
1466 	 */
1467 	usb_set_interface(chip->dev, iface, 0);
1468 
1469 	if (chip->setup & MAUDIO_SET) {
1470 		unsigned int mask;
1471 		if ((chip->setup & MAUDIO_SET_DTS) && altno != 6)
1472 			return 1; /* skip this altsetting */
1473 		if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
1474 			return 1; /* skip this altsetting */
1475 		mask = chip->setup & MAUDIO_SET_MASK;
1476 		if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
1477 			return 1; /* skip this altsetting */
1478 		if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
1479 			return 1; /* skip this altsetting */
1480 		if (mask == MAUDIO_SET_16B_48K_DI && altno != 4)
1481 			return 1; /* skip this altsetting */
1482 		if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 5)
1483 			return 1; /* skip this altsetting */
1484 	}
1485 
1486 	return 0; /* keep this altsetting */
1487 }
1488 
1489 static int fasttrackpro_skip_setting_quirk(struct snd_usb_audio *chip,
1490 					   int iface, int altno)
1491 {
1492 	/* Reset ALL ifaces to 0 altsetting.
1493 	 * Call it for every possible altsetting of every interface.
1494 	 */
1495 	usb_set_interface(chip->dev, iface, 0);
1496 
1497 	/* possible configuration where both inputs and only one output is
1498 	 *used is not supported by the current setup
1499 	 */
1500 	if (chip->setup & (MAUDIO_SET | MAUDIO_SET_24B)) {
1501 		if (chip->setup & MAUDIO_SET_96K) {
1502 			if (altno != 3 && altno != 6)
1503 				return 1;
1504 		} else if (chip->setup & MAUDIO_SET_DI) {
1505 			if (iface == 4)
1506 				return 1; /* no analog input */
1507 			if (altno != 2 && altno != 5)
1508 				return 1; /* enable only altsets 2 and 5 */
1509 		} else {
1510 			if (iface == 5)
1511 				return 1; /* disable digialt input */
1512 			if (altno != 2 && altno != 5)
1513 				return 1; /* enalbe only altsets 2 and 5 */
1514 		}
1515 	} else {
1516 		/* keep only 16-Bit mode */
1517 		if (altno != 1)
1518 			return 1;
1519 	}
1520 
1521 	usb_audio_dbg(chip,
1522 		    "using altsetting %d for interface %d config %d\n",
1523 		    altno, iface, chip->setup);
1524 	return 0; /* keep this altsetting */
1525 }
1526 
1527 static int s1810c_skip_setting_quirk(struct snd_usb_audio *chip,
1528 					   int iface, int altno)
1529 {
1530 	/*
1531 	 * Altno settings:
1532 	 *
1533 	 * Playback (Interface 1):
1534 	 * 1: 6 Analog + 2 S/PDIF
1535 	 * 2: 6 Analog + 2 S/PDIF
1536 	 * 3: 6 Analog
1537 	 *
1538 	 * Capture (Interface 2):
1539 	 * 1: 8 Analog + 2 S/PDIF + 8 ADAT
1540 	 * 2: 8 Analog + 2 S/PDIF + 4 ADAT
1541 	 * 3: 8 Analog
1542 	 */
1543 
1544 	/*
1545 	 * I'll leave 2 as the default one and
1546 	 * use device_setup to switch to the
1547 	 * other two.
1548 	 */
1549 	if ((chip->setup == 0 || chip->setup > 2) && altno != 2)
1550 		return 1;
1551 	else if (chip->setup == 1 && altno != 1)
1552 		return 1;
1553 	else if (chip->setup == 2 && altno != 3)
1554 		return 1;
1555 
1556 	return 0;
1557 }
1558 
1559 int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
1560 				  int iface,
1561 				  int altno)
1562 {
1563 	/* audiophile usb: skip altsets incompatible with device_setup */
1564 	if (chip->usb_id == USB_ID(0x0763, 0x2003))
1565 		return audiophile_skip_setting_quirk(chip, iface, altno);
1566 	/* quattro usb: skip altsets incompatible with device_setup */
1567 	if (chip->usb_id == USB_ID(0x0763, 0x2001))
1568 		return quattro_skip_setting_quirk(chip, iface, altno);
1569 	/* fasttrackpro usb: skip altsets incompatible with device_setup */
1570 	if (chip->usb_id == USB_ID(0x0763, 0x2012))
1571 		return fasttrackpro_skip_setting_quirk(chip, iface, altno);
1572 	/* presonus studio 1810c: skip altsets incompatible with device_setup */
1573 	if (chip->usb_id == USB_ID(0x194f, 0x010c))
1574 		return s1810c_skip_setting_quirk(chip, iface, altno);
1575 
1576 
1577 	return 0;
1578 }
1579 
1580 int snd_usb_apply_boot_quirk(struct usb_device *dev,
1581 			     struct usb_interface *intf,
1582 			     const struct snd_usb_audio_quirk *quirk,
1583 			     unsigned int id)
1584 {
1585 	switch (id) {
1586 	case USB_ID(0x041e, 0x3000):
1587 		/* SB Extigy needs special boot-up sequence */
1588 		/* if more models come, this will go to the quirk list. */
1589 		return snd_usb_extigy_boot_quirk(dev, intf);
1590 
1591 	case USB_ID(0x041e, 0x3020):
1592 		/* SB Audigy 2 NX needs its own boot-up magic, too */
1593 		return snd_usb_audigy2nx_boot_quirk(dev);
1594 
1595 	case USB_ID(0x10f5, 0x0200):
1596 		/* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
1597 		return snd_usb_cm106_boot_quirk(dev);
1598 
1599 	case USB_ID(0x0d8c, 0x0102):
1600 		/* C-Media CM6206 / CM106-Like Sound Device */
1601 	case USB_ID(0x0ccd, 0x00b1): /* Terratec Aureon 7.1 USB */
1602 		return snd_usb_cm6206_boot_quirk(dev);
1603 
1604 	case USB_ID(0x0dba, 0x3000):
1605 		/* Digidesign Mbox 2 */
1606 		return snd_usb_mbox2_boot_quirk(dev);
1607 	case USB_ID(0x0dba, 0x5000):
1608 		/* Digidesign Mbox 3 */
1609 		return snd_usb_mbox3_boot_quirk(dev);
1610 
1611 
1612 	case USB_ID(0x1235, 0x0010): /* Focusrite Novation Saffire 6 USB */
1613 	case USB_ID(0x1235, 0x0018): /* Focusrite Novation Twitch */
1614 		return snd_usb_novation_boot_quirk(dev);
1615 
1616 	case USB_ID(0x133e, 0x0815):
1617 		/* Access Music VirusTI Desktop */
1618 		return snd_usb_accessmusic_boot_quirk(dev);
1619 
1620 	case USB_ID(0x17cc, 0x1000): /* Komplete Audio 6 */
1621 	case USB_ID(0x17cc, 0x1010): /* Traktor Audio 6 */
1622 	case USB_ID(0x17cc, 0x1020): /* Traktor Audio 10 */
1623 		return snd_usb_nativeinstruments_boot_quirk(dev);
1624 	case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
1625 		return snd_usb_fasttrackpro_boot_quirk(dev);
1626 	case USB_ID(0x047f, 0xc010): /* Plantronics Gamecom 780 */
1627 		return snd_usb_gamecon780_boot_quirk(dev);
1628 	case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx 3 */
1629 		return snd_usb_axefx3_boot_quirk(dev);
1630 	case USB_ID(0x07fd, 0x0004): /* MOTU MicroBook II */
1631 		/*
1632 		 * For some reason interface 3 with vendor-spec class is
1633 		 * detected on MicroBook IIc.
1634 		 */
1635 		if (get_iface_desc(intf->altsetting)->bInterfaceClass ==
1636 		    USB_CLASS_VENDOR_SPEC &&
1637 		    get_iface_desc(intf->altsetting)->bInterfaceNumber < 3)
1638 			return snd_usb_motu_microbookii_boot_quirk(dev);
1639 		break;
1640 	case USB_ID(0x2a39, 0x3f8c): /* RME Digiface USB */
1641 		return snd_usb_rme_digiface_boot_quirk(dev);
1642 	}
1643 
1644 	return 0;
1645 }
1646 
1647 int snd_usb_apply_boot_quirk_once(struct usb_device *dev,
1648 				  struct usb_interface *intf,
1649 				  const struct snd_usb_audio_quirk *quirk,
1650 				  unsigned int id)
1651 {
1652 	switch (id) {
1653 	case USB_ID(0x07fd, 0x0008): /* MOTU M Series, 1st hardware version */
1654 		return snd_usb_motu_m_series_boot_quirk(dev);
1655 	}
1656 
1657 	return 0;
1658 }
1659 
1660 /*
1661  * check if the device uses big-endian samples
1662  */
1663 int snd_usb_is_big_endian_format(struct snd_usb_audio *chip,
1664 				 const struct audioformat *fp)
1665 {
1666 	/* it depends on altsetting whether the device is big-endian or not */
1667 	switch (chip->usb_id) {
1668 	case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
1669 		if (fp->altsetting == 2 || fp->altsetting == 3 ||
1670 			fp->altsetting == 5 || fp->altsetting == 6)
1671 			return 1;
1672 		break;
1673 	case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
1674 		if (chip->setup == 0x00 ||
1675 			fp->altsetting == 1 || fp->altsetting == 2 ||
1676 			fp->altsetting == 3)
1677 			return 1;
1678 		break;
1679 	case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro */
1680 		if (fp->altsetting == 2 || fp->altsetting == 3 ||
1681 			fp->altsetting == 5 || fp->altsetting == 6)
1682 			return 1;
1683 		break;
1684 	}
1685 	return 0;
1686 }
1687 
1688 /*
1689  * For E-Mu 0404USB/0202USB/TrackerPre/0204 sample rate should be set for device,
1690  * not for interface.
1691  */
1692 
1693 enum {
1694 	EMU_QUIRK_SR_44100HZ = 0,
1695 	EMU_QUIRK_SR_48000HZ,
1696 	EMU_QUIRK_SR_88200HZ,
1697 	EMU_QUIRK_SR_96000HZ,
1698 	EMU_QUIRK_SR_176400HZ,
1699 	EMU_QUIRK_SR_192000HZ
1700 };
1701 
1702 static void set_format_emu_quirk(struct snd_usb_substream *subs,
1703 				 const struct audioformat *fmt)
1704 {
1705 	unsigned char emu_samplerate_id = 0;
1706 
1707 	/* When capture is active
1708 	 * sample rate shouldn't be changed
1709 	 * by playback substream
1710 	 */
1711 	if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
1712 		if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].cur_audiofmt)
1713 			return;
1714 	}
1715 
1716 	switch (fmt->rate_min) {
1717 	case 48000:
1718 		emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
1719 		break;
1720 	case 88200:
1721 		emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
1722 		break;
1723 	case 96000:
1724 		emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
1725 		break;
1726 	case 176400:
1727 		emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
1728 		break;
1729 	case 192000:
1730 		emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
1731 		break;
1732 	default:
1733 		emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
1734 		break;
1735 	}
1736 	snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
1737 	subs->pkt_offset_adj = (emu_samplerate_id >= EMU_QUIRK_SR_176400HZ) ? 4 : 0;
1738 }
1739 
1740 static int pioneer_djm_set_format_quirk(struct snd_usb_substream *subs,
1741 					u16 windex)
1742 {
1743 	unsigned int cur_rate = subs->data_endpoint->cur_rate;
1744 	u8 sr[3];
1745 	// Convert to little endian
1746 	sr[0] = cur_rate & 0xff;
1747 	sr[1] = (cur_rate >> 8) & 0xff;
1748 	sr[2] = (cur_rate >> 16) & 0xff;
1749 	usb_set_interface(subs->dev, 0, 1);
1750 	// we should derive windex from fmt-sync_ep but it's not set
1751 	snd_usb_ctl_msg(subs->stream->chip->dev,
1752 		usb_sndctrlpipe(subs->stream->chip->dev, 0),
1753 		0x01, 0x22, 0x0100, windex, &sr, 0x0003);
1754 	return 0;
1755 }
1756 
1757 static void mbox3_set_format_quirk(struct snd_usb_substream *subs,
1758 				const struct audioformat *fmt)
1759 {
1760 	__le32 buff4 = 0;
1761 	u8 buff1 = 0x01;
1762 	u32 new_rate = subs->data_endpoint->cur_rate;
1763 	u32 current_rate;
1764 
1765 	// Get current rate from card and check if changing it is needed
1766 	snd_usb_ctl_msg(subs->dev, usb_rcvctrlpipe(subs->dev, 0),
1767 					0x01, 0x21 | USB_DIR_IN, 0x0100, 0x8101, &buff4, 4);
1768 	current_rate = le32_to_cpu(buff4);
1769 	dev_dbg(&subs->dev->dev,
1770 			 "MBOX3: Current configured sample rate: %d", current_rate);
1771 	if (current_rate == new_rate) {
1772 		dev_dbg(&subs->dev->dev,
1773 			"MBOX3: No change needed (current rate:%d == new rate:%d)",
1774 			current_rate, new_rate);
1775 		return;
1776 	}
1777 
1778 	// Set new rate
1779 	dev_info(&subs->dev->dev,
1780 			 "MBOX3: Changing sample rate to: %d", new_rate);
1781 	buff4 = cpu_to_le32(new_rate);
1782 	snd_usb_ctl_msg(subs->dev, usb_sndctrlpipe(subs->dev, 0),
1783 					0x01, 0x21, 0x0100, 0x8101, &buff4, 4);
1784 
1785 	// Set clock source to Internal
1786 	snd_usb_ctl_msg(subs->dev, usb_sndctrlpipe(subs->dev, 0),
1787 					0x01, 0x21, 0x0100, 0x8001, &buff1, 1);
1788 
1789 	// Check whether the change was successful
1790 	buff4 = 0;
1791 	snd_usb_ctl_msg(subs->dev, usb_rcvctrlpipe(subs->dev, 0),
1792 					0x01, 0x21 | USB_DIR_IN, 0x0100, 0x8101, &buff4, 4);
1793 	if (new_rate != le32_to_cpu(buff4))
1794 		dev_warn(&subs->dev->dev, "MBOX3: Couldn't set the sample rate");
1795 }
1796 
1797 static const int rme_digiface_rate_table[] = {
1798 	32000, 44100, 48000, 0,
1799 	64000, 88200, 96000, 0,
1800 	128000, 176400, 192000, 0,
1801 };
1802 
1803 static int rme_digiface_set_format_quirk(struct snd_usb_substream *subs)
1804 {
1805 	unsigned int cur_rate = subs->data_endpoint->cur_rate;
1806 	u16 val;
1807 	int speed_mode;
1808 	int id;
1809 
1810 	for (id = 0; id < ARRAY_SIZE(rme_digiface_rate_table); id++) {
1811 		if (rme_digiface_rate_table[id] == cur_rate)
1812 			break;
1813 	}
1814 
1815 	if (id >= ARRAY_SIZE(rme_digiface_rate_table))
1816 		return -EINVAL;
1817 
1818 	/* 2, 3, 4 for 1x, 2x, 4x */
1819 	speed_mode = (id >> 2) + 2;
1820 	val = (id << 3) | (speed_mode << 12);
1821 
1822 	/* Set the sample rate */
1823 	snd_usb_ctl_msg(subs->stream->chip->dev,
1824 		usb_sndctrlpipe(subs->stream->chip->dev, 0),
1825 		16, 0x40, val, 0x7078, NULL, 0);
1826 	return 0;
1827 }
1828 
1829 void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
1830 			      const struct audioformat *fmt)
1831 {
1832 	switch (subs->stream->chip->usb_id) {
1833 	case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
1834 	case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
1835 	case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
1836 	case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
1837 		set_format_emu_quirk(subs, fmt);
1838 		break;
1839 	case USB_ID(0x534d, 0x0021): /* MacroSilicon MS2100/MS2106 */
1840 	case USB_ID(0x534d, 0x2109): /* MacroSilicon MS2109 */
1841 		subs->stream_offset_adj = 2;
1842 		break;
1843 	case USB_ID(0x2b73, 0x0013): /* Pioneer DJM-450 */
1844 		pioneer_djm_set_format_quirk(subs, 0x0082);
1845 		break;
1846 	case USB_ID(0x08e4, 0x017f): /* Pioneer DJM-750 */
1847 	case USB_ID(0x08e4, 0x0163): /* Pioneer DJM-850 */
1848 		pioneer_djm_set_format_quirk(subs, 0x0086);
1849 		break;
1850 	case USB_ID(0x0dba, 0x5000):
1851 		mbox3_set_format_quirk(subs, fmt); /* Digidesign Mbox 3 */
1852 		break;
1853 	case USB_ID(0x2a39, 0x3f8c): /* RME Digiface USB */
1854 		rme_digiface_set_format_quirk(subs);
1855 		break;
1856 	}
1857 }
1858 
1859 int snd_usb_select_mode_quirk(struct snd_usb_audio *chip,
1860 			      const struct audioformat *fmt)
1861 {
1862 	struct usb_device *dev = chip->dev;
1863 	int err;
1864 
1865 	if (chip->quirk_flags & QUIRK_FLAG_ITF_USB_DSD_DAC) {
1866 		/* First switch to alt set 0, otherwise the mode switch cmd
1867 		 * will not be accepted by the DAC
1868 		 */
1869 		err = usb_set_interface(dev, fmt->iface, 0);
1870 		if (err < 0)
1871 			return err;
1872 
1873 		msleep(20); /* Delay needed after setting the interface */
1874 
1875 		/* Vendor mode switch cmd is required. */
1876 		if (fmt->formats & SNDRV_PCM_FMTBIT_DSD_U32_BE) {
1877 			/* DSD mode (DSD_U32) requested */
1878 			err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
1879 					      USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
1880 					      1, 1, NULL, 0);
1881 			if (err < 0)
1882 				return err;
1883 
1884 		} else {
1885 			/* PCM or DOP mode (S32) requested */
1886 			/* PCM mode (S16) requested */
1887 			err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
1888 					      USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
1889 					      0, 1, NULL, 0);
1890 			if (err < 0)
1891 				return err;
1892 
1893 		}
1894 		msleep(20);
1895 	}
1896 	return 0;
1897 }
1898 
1899 void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep)
1900 {
1901 	/*
1902 	 * "Playback Design" products send bogus feedback data at the start
1903 	 * of the stream. Ignore them.
1904 	 */
1905 	if (USB_ID_VENDOR(ep->chip->usb_id) == 0x23ba &&
1906 	    ep->type == SND_USB_ENDPOINT_TYPE_SYNC)
1907 		ep->skip_packets = 4;
1908 
1909 	/*
1910 	 * M-Audio Fast Track C400/C600 - when packets are not skipped, real
1911 	 * world latency varies by approx. +/- 50 frames (at 96kHz) each time
1912 	 * the stream is (re)started. When skipping packets 16 at endpoint
1913 	 * start up, the real world latency is stable within +/- 1 frame (also
1914 	 * across power cycles).
1915 	 */
1916 	if ((ep->chip->usb_id == USB_ID(0x0763, 0x2030) ||
1917 	     ep->chip->usb_id == USB_ID(0x0763, 0x2031)) &&
1918 	    ep->type == SND_USB_ENDPOINT_TYPE_DATA)
1919 		ep->skip_packets = 16;
1920 
1921 	/* Work around devices that report unreasonable feedback data */
1922 	if ((ep->chip->usb_id == USB_ID(0x0644, 0x8038) ||  /* TEAC UD-H01 */
1923 	     ep->chip->usb_id == USB_ID(0x1852, 0x5034)) && /* T+A Dac8 */
1924 	    ep->syncmaxsize == 4)
1925 		ep->tenor_fb_quirk = 1;
1926 }
1927 
1928 /* quirk applied after snd_usb_ctl_msg(); not applied during boot quirks */
1929 void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
1930 			   __u8 request, __u8 requesttype, __u16 value,
1931 			   __u16 index, void *data, __u16 size)
1932 {
1933 	struct snd_usb_audio *chip = dev_get_drvdata(&dev->dev);
1934 
1935 	if (!chip || (requesttype & USB_TYPE_MASK) != USB_TYPE_CLASS)
1936 		return;
1937 
1938 	if (chip->quirk_flags & QUIRK_FLAG_CTL_MSG_DELAY)
1939 		msleep(20);
1940 	else if (chip->quirk_flags & QUIRK_FLAG_CTL_MSG_DELAY_1M)
1941 		usleep_range(1000, 2000);
1942 	else if (chip->quirk_flags & QUIRK_FLAG_CTL_MSG_DELAY_5M)
1943 		usleep_range(5000, 6000);
1944 }
1945 
1946 /*
1947  * snd_usb_interface_dsd_format_quirks() is called from format.c to
1948  * augment the PCM format bit-field for DSD types. The UAC standards
1949  * don't have a designated bit field to denote DSD-capable interfaces,
1950  * hence all hardware that is known to support this format has to be
1951  * listed here.
1952  */
1953 u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
1954 					struct audioformat *fp,
1955 					unsigned int sample_bytes)
1956 {
1957 	struct usb_interface *iface;
1958 
1959 	/* Playback Designs */
1960 	if (USB_ID_VENDOR(chip->usb_id) == 0x23ba &&
1961 	    USB_ID_PRODUCT(chip->usb_id) < 0x0110) {
1962 		switch (fp->altsetting) {
1963 		case 1:
1964 			fp->dsd_dop = true;
1965 			return SNDRV_PCM_FMTBIT_DSD_U16_LE;
1966 		case 2:
1967 			fp->dsd_bitrev = true;
1968 			return SNDRV_PCM_FMTBIT_DSD_U8;
1969 		case 3:
1970 			fp->dsd_bitrev = true;
1971 			return SNDRV_PCM_FMTBIT_DSD_U16_LE;
1972 		}
1973 	}
1974 
1975 	/* XMOS based USB DACs */
1976 	switch (chip->usb_id) {
1977 	case USB_ID(0x139f, 0x5504): /* Nagra DAC */
1978 	case USB_ID(0x20b1, 0x3089): /* Mola-Mola DAC */
1979 	case USB_ID(0x2522, 0x0007): /* LH Labs Geek Out 1V5 */
1980 	case USB_ID(0x2522, 0x0009): /* LH Labs Geek Pulse X Inifinity 2V0 */
1981 	case USB_ID(0x2522, 0x0012): /* LH Labs VI DAC Infinity */
1982 	case USB_ID(0x2772, 0x0230): /* Pro-Ject Pre Box S2 Digital */
1983 		if (fp->altsetting == 2)
1984 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1985 		break;
1986 
1987 	case USB_ID(0x0d8c, 0x0316): /* Hegel HD12 DSD */
1988 	case USB_ID(0x10cb, 0x0103): /* The Bit Opus #3; with fp->dsd_raw */
1989 	case USB_ID(0x16d0, 0x06b2): /* NuPrime DAC-10 */
1990 	case USB_ID(0x16d0, 0x06b4): /* NuPrime Audio HD-AVP/AVA */
1991 	case USB_ID(0x16d0, 0x0733): /* Furutech ADL Stratos */
1992 	case USB_ID(0x16d0, 0x09d8): /* NuPrime IDA-8 */
1993 	case USB_ID(0x16d0, 0x09db): /* NuPrime Audio DAC-9 */
1994 	case USB_ID(0x16d0, 0x09dd): /* Encore mDSD */
1995 	case USB_ID(0x1db5, 0x0003): /* Bryston BDA3 */
1996 	case USB_ID(0x20a0, 0x4143): /* WaveIO USB Audio 2.0 */
1997 	case USB_ID(0x22e1, 0xca01): /* HDTA Serenade DSD */
1998 	case USB_ID(0x249c, 0x9326): /* M2Tech Young MkIII */
1999 	case USB_ID(0x2616, 0x0106): /* PS Audio NuWave DAC */
2000 	case USB_ID(0x2622, 0x0041): /* Audiolab M-DAC+ */
2001 	case USB_ID(0x278b, 0x5100): /* Rotel RC-1590 */
2002 	case USB_ID(0x27f7, 0x3002): /* W4S DAC-2v2SE */
2003 	case USB_ID(0x29a2, 0x0086): /* Mutec MC3+ USB */
2004 	case USB_ID(0x6b42, 0x0042): /* MSB Technology */
2005 		if (fp->altsetting == 3)
2006 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
2007 		break;
2008 
2009 	/* Amanero Combo384 USB based DACs with native DSD support */
2010 	case USB_ID(0x16d0, 0x071a):  /* Amanero - Combo384 */
2011 		if (fp->altsetting == 2) {
2012 			switch (le16_to_cpu(chip->dev->descriptor.bcdDevice)) {
2013 			case 0x199:
2014 				return SNDRV_PCM_FMTBIT_DSD_U32_LE;
2015 			case 0x19b:
2016 			case 0x203:
2017 				return SNDRV_PCM_FMTBIT_DSD_U32_BE;
2018 			default:
2019 				break;
2020 			}
2021 		}
2022 		break;
2023 	case USB_ID(0x16d0, 0x0a23):
2024 		if (fp->altsetting == 2)
2025 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
2026 		break;
2027 
2028 	default:
2029 		break;
2030 	}
2031 
2032 	/* ITF-USB DSD based DACs */
2033 	if (chip->quirk_flags & QUIRK_FLAG_ITF_USB_DSD_DAC) {
2034 		iface = usb_ifnum_to_if(chip->dev, fp->iface);
2035 
2036 		/* Altsetting 2 support native DSD if the num of altsets is
2037 		 * three (0-2),
2038 		 * Altsetting 3 support native DSD if the num of altsets is
2039 		 * four (0-3).
2040 		 */
2041 		if (fp->altsetting == iface->num_altsetting - 1)
2042 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
2043 	}
2044 
2045 	/* Mostly generic method to detect many DSD-capable implementations */
2046 	if ((chip->quirk_flags & QUIRK_FLAG_DSD_RAW) && fp->dsd_raw)
2047 		return SNDRV_PCM_FMTBIT_DSD_U32_BE;
2048 
2049 	return 0;
2050 }
2051 
2052 void snd_usb_audioformat_attributes_quirk(struct snd_usb_audio *chip,
2053 					  struct audioformat *fp,
2054 					  int stream)
2055 {
2056 	switch (chip->usb_id) {
2057 	case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
2058 		/* Optoplay sets the sample rate attribute although
2059 		 * it seems not supporting it in fact.
2060 		 */
2061 		fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
2062 		break;
2063 	case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
2064 	case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
2065 		/* doesn't set the sample rate attribute, but supports it */
2066 		fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
2067 		break;
2068 	case USB_ID(0x0763, 0x2001):  /* M-Audio Quattro USB */
2069 	case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
2070 	case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
2071 	case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
2072 					an older model 77d:223) */
2073 	/*
2074 	 * plantronics headset and Griffin iMic have set adaptive-in
2075 	 * although it's really not...
2076 	 */
2077 		fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
2078 		if (stream == SNDRV_PCM_STREAM_PLAYBACK)
2079 			fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
2080 		else
2081 			fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
2082 		break;
2083 	case USB_ID(0x07fd, 0x0004):  /* MOTU MicroBook IIc */
2084 		/*
2085 		 * MaxPacketsOnly attribute is erroneously set in endpoint
2086 		 * descriptors. As a result this card produces noise with
2087 		 * all sample rates other than 96 kHz.
2088 		 */
2089 		fp->attributes &= ~UAC_EP_CS_ATTR_FILL_MAX;
2090 		break;
2091 	case USB_ID(0x1224, 0x2a25):  /* Jieli Technology USB PHY 2.0 */
2092 		/* mic works only when ep packet size is set to wMaxPacketSize */
2093 		fp->attributes |= UAC_EP_CS_ATTR_FILL_MAX;
2094 		break;
2095 	case USB_ID(0x3511, 0x2b1e): /* Opencomm2 UC USB Bluetooth dongle */
2096 		/* mic works only when ep pitch control is not set */
2097 		if (stream == SNDRV_PCM_STREAM_CAPTURE)
2098 			fp->attributes &= ~UAC_EP_CS_ATTR_PITCH_CONTROL;
2099 		break;
2100 	}
2101 }
2102 
2103 /*
2104  * driver behavior quirk flags
2105  */
2106 struct usb_audio_quirk_flags_table {
2107 	u32 id;
2108 	u32 flags;
2109 };
2110 
2111 #define DEVICE_FLG(vid, pid, _flags) \
2112 	{ .id = USB_ID(vid, pid), .flags = (_flags) }
2113 #define VENDOR_FLG(vid, _flags) DEVICE_FLG(vid, 0, _flags)
2114 
2115 static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
2116 	/* Device matches */
2117 	DEVICE_FLG(0x041e, 0x3000, /* Creative SB Extigy */
2118 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
2119 	DEVICE_FLG(0x041e, 0x4080, /* Creative Live Cam VF0610 */
2120 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2121 	DEVICE_FLG(0x045e, 0x083c, /* MS USB Link headset */
2122 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY |
2123 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
2124 	DEVICE_FLG(0x046d, 0x084c, /* Logitech ConferenceCam Connect */
2125 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY_1M),
2126 	DEVICE_FLG(0x046d, 0x0991, /* Logitech QuickCam Pro */
2127 		   QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_IGNORE_CTL_ERROR),
2128 	DEVICE_FLG(0x046d, 0x09a4, /* Logitech QuickCam E 3500 */
2129 		   QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_IGNORE_CTL_ERROR),
2130 	DEVICE_FLG(0x0499, 0x1509, /* Steinberg UR22 */
2131 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2132 	DEVICE_FLG(0x0499, 0x3108, /* Yamaha YIT-W12TX */
2133 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2134 	DEVICE_FLG(0x04d8, 0xfeea, /* Benchmark DAC1 Pre */
2135 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2136 	DEVICE_FLG(0x04e8, 0xa051, /* Samsung USBC Headset (AKG) */
2137 		   QUIRK_FLAG_SKIP_CLOCK_SELECTOR | QUIRK_FLAG_CTL_MSG_DELAY_5M),
2138 	DEVICE_FLG(0x0525, 0xa4ad, /* Hamedal C20 usb camero */
2139 		   QUIRK_FLAG_IFACE_SKIP_CLOSE),
2140 	DEVICE_FLG(0x054c, 0x0b8c, /* Sony WALKMAN NW-A45 DAC */
2141 		   QUIRK_FLAG_SET_IFACE_FIRST),
2142 	DEVICE_FLG(0x0556, 0x0014, /* Phoenix Audio TMX320VC */
2143 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2144 	DEVICE_FLG(0x05a3, 0x9420, /* ELP HD USB Camera */
2145 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2146 	DEVICE_FLG(0x05a7, 0x1020, /* Bose Companion 5 */
2147 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2148 	DEVICE_FLG(0x05e1, 0x0408, /* Syntek STK1160 */
2149 		   QUIRK_FLAG_ALIGN_TRANSFER),
2150 	DEVICE_FLG(0x05e1, 0x0480, /* Hauppauge Woodbury */
2151 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2152 	DEVICE_FLG(0x0644, 0x8043, /* TEAC UD-501/UD-501V2/UD-503/NT-503 */
2153 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
2154 		   QUIRK_FLAG_IFACE_DELAY),
2155 	DEVICE_FLG(0x0644, 0x8044, /* Esoteric D-05X */
2156 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
2157 		   QUIRK_FLAG_IFACE_DELAY),
2158 	DEVICE_FLG(0x0644, 0x804a, /* TEAC UD-301 */
2159 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
2160 		   QUIRK_FLAG_IFACE_DELAY),
2161 	DEVICE_FLG(0x0644, 0x805f, /* TEAC Model 12 */
2162 		   QUIRK_FLAG_FORCE_IFACE_RESET),
2163 	DEVICE_FLG(0x0644, 0x806b, /* TEAC UD-701 */
2164 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
2165 		   QUIRK_FLAG_IFACE_DELAY),
2166 	DEVICE_FLG(0x06f8, 0xb000, /* Hercules DJ Console (Windows Edition) */
2167 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
2168 	DEVICE_FLG(0x06f8, 0xd002, /* Hercules DJ Console (Macintosh Edition) */
2169 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
2170 	DEVICE_FLG(0x0711, 0x5800, /* MCT Trigger 5 USB-to-HDMI */
2171 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2172 	DEVICE_FLG(0x074d, 0x3553, /* Outlaw RR2150 (Micronas UAC3553B) */
2173 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2174 	DEVICE_FLG(0x0763, 0x2030, /* M-Audio Fast Track C400 */
2175 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2176 	DEVICE_FLG(0x0763, 0x2031, /* M-Audio Fast Track C600 */
2177 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2178 	DEVICE_FLG(0x07fd, 0x000b, /* MOTU M Series 2nd hardware revision */
2179 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
2180 	DEVICE_FLG(0x08bb, 0x2702, /* LineX FM Transmitter */
2181 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
2182 	DEVICE_FLG(0x0951, 0x16ad, /* Kingston HyperX */
2183 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
2184 	DEVICE_FLG(0x0b0e, 0x0349, /* Jabra 550a */
2185 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
2186 	DEVICE_FLG(0x0c45, 0x6340, /* Sonix HD USB Camera */
2187 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2188 	DEVICE_FLG(0x0ecb, 0x205c, /* JBL Quantum610 Wireless */
2189 		   QUIRK_FLAG_FIXED_RATE),
2190 	DEVICE_FLG(0x0ecb, 0x2069, /* JBL Quantum810 Wireless */
2191 		   QUIRK_FLAG_FIXED_RATE),
2192 	DEVICE_FLG(0x0fd9, 0x0008, /* Hauppauge HVR-950Q */
2193 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2194 	DEVICE_FLG(0x1224, 0x2a25, /* Jieli Technology USB PHY 2.0 */
2195 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2196 	DEVICE_FLG(0x1395, 0x740a, /* Sennheiser DECT */
2197 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2198 	DEVICE_FLG(0x1397, 0x0507, /* Behringer UMC202HD */
2199 		   QUIRK_FLAG_PLAYBACK_FIRST | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2200 	DEVICE_FLG(0x1397, 0x0508, /* Behringer UMC204HD */
2201 		   QUIRK_FLAG_PLAYBACK_FIRST | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2202 	DEVICE_FLG(0x1397, 0x0509, /* Behringer UMC404HD */
2203 		   QUIRK_FLAG_PLAYBACK_FIRST | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2204 	DEVICE_FLG(0x13e5, 0x0001, /* Serato Phono */
2205 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
2206 	DEVICE_FLG(0x154e, 0x1002, /* Denon DCD-1500RE */
2207 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
2208 	DEVICE_FLG(0x154e, 0x1003, /* Denon DA-300USB */
2209 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
2210 	DEVICE_FLG(0x154e, 0x3005, /* Marantz HD-DAC1 */
2211 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
2212 	DEVICE_FLG(0x154e, 0x3006, /* Marantz SA-14S1 */
2213 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
2214 	DEVICE_FLG(0x154e, 0x300b, /* Marantz SA-KI RUBY / SA-12 */
2215 		   QUIRK_FLAG_DSD_RAW),
2216 	DEVICE_FLG(0x154e, 0x500e, /* Denon DN-X1600 */
2217 		   QUIRK_FLAG_IGNORE_CLOCK_SOURCE),
2218 	DEVICE_FLG(0x1686, 0x00dd, /* Zoom R16/24 */
2219 		   QUIRK_FLAG_TX_LENGTH | QUIRK_FLAG_CTL_MSG_DELAY_1M),
2220 	DEVICE_FLG(0x17aa, 0x1046, /* Lenovo ThinkStation P620 Rear Line-in, Line-out and Microphone */
2221 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
2222 	DEVICE_FLG(0x17aa, 0x104d, /* Lenovo ThinkStation P620 Internal Speaker + Front Headset */
2223 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
2224 	DEVICE_FLG(0x1852, 0x5065, /* Luxman DA-06 */
2225 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
2226 	DEVICE_FLG(0x1901, 0x0191, /* GE B850V3 CP2114 audio interface */
2227 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2228 	DEVICE_FLG(0x19f7, 0x0035, /* RODE NT-USB+ */
2229 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2230 	DEVICE_FLG(0x1bcf, 0x2281, /* HD Webcam */
2231 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2232 	DEVICE_FLG(0x1bcf, 0x2283, /* NexiGo N930AF FHD Webcam */
2233 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2234 	DEVICE_FLG(0x2040, 0x7200, /* Hauppauge HVR-950Q */
2235 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2236 	DEVICE_FLG(0x2040, 0x7201, /* Hauppauge HVR-950Q-MXL */
2237 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2238 	DEVICE_FLG(0x2040, 0x7210, /* Hauppauge HVR-950Q */
2239 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2240 	DEVICE_FLG(0x2040, 0x7211, /* Hauppauge HVR-950Q-MXL */
2241 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2242 	DEVICE_FLG(0x2040, 0x7213, /* Hauppauge HVR-950Q */
2243 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2244 	DEVICE_FLG(0x2040, 0x7217, /* Hauppauge HVR-950Q */
2245 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2246 	DEVICE_FLG(0x2040, 0x721b, /* Hauppauge HVR-950Q */
2247 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2248 	DEVICE_FLG(0x2040, 0x721e, /* Hauppauge HVR-950Q */
2249 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2250 	DEVICE_FLG(0x2040, 0x721f, /* Hauppauge HVR-950Q */
2251 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2252 	DEVICE_FLG(0x2040, 0x7240, /* Hauppauge HVR-850 */
2253 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2254 	DEVICE_FLG(0x2040, 0x7260, /* Hauppauge HVR-950Q */
2255 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2256 	DEVICE_FLG(0x2040, 0x7270, /* Hauppauge HVR-950Q */
2257 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2258 	DEVICE_FLG(0x2040, 0x7280, /* Hauppauge HVR-950Q */
2259 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2260 	DEVICE_FLG(0x2040, 0x7281, /* Hauppauge HVR-950Q-MXL */
2261 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2262 	DEVICE_FLG(0x2040, 0x8200, /* Hauppauge Woodbury */
2263 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
2264 	DEVICE_FLG(0x21b4, 0x0081, /* AudioQuest DragonFly */
2265 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2266 	DEVICE_FLG(0x21b4, 0x0230, /* Ayre QB-9 Twenty */
2267 		   QUIRK_FLAG_DSD_RAW),
2268 	DEVICE_FLG(0x21b4, 0x0232, /* Ayre QX-5 Twenty */
2269 		   QUIRK_FLAG_DSD_RAW),
2270 	DEVICE_FLG(0x2522, 0x0007, /* LH Labs Geek Out HD Audio 1V5 */
2271 		   QUIRK_FLAG_SET_IFACE_FIRST),
2272 	DEVICE_FLG(0x2708, 0x0002, /* Audient iD14 */
2273 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
2274 	DEVICE_FLG(0x2912, 0x30c8, /* Audioengine D1 */
2275 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2276 	DEVICE_FLG(0x2b53, 0x0023, /* Fiero SC-01 (firmware v1.0.0 @ 48 kHz) */
2277 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2278 	DEVICE_FLG(0x2b53, 0x0024, /* Fiero SC-01 (firmware v1.0.0 @ 96 kHz) */
2279 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2280 	DEVICE_FLG(0x2b53, 0x0031, /* Fiero SC-01 (firmware v1.1.0) */
2281 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
2282 	DEVICE_FLG(0x2d95, 0x8021, /* VIVO USB-C-XE710 HEADSET */
2283 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
2284 	DEVICE_FLG(0x30be, 0x0101, /* Schiit Hel */
2285 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
2286 	DEVICE_FLG(0x413c, 0xa506, /* Dell AE515 sound bar */
2287 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2288 	DEVICE_FLG(0x534d, 0x0021, /* MacroSilicon MS2100/MS2106 */
2289 		   QUIRK_FLAG_ALIGN_TRANSFER),
2290 	DEVICE_FLG(0x534d, 0x2109, /* MacroSilicon MS2109 */
2291 		   QUIRK_FLAG_ALIGN_TRANSFER),
2292 
2293 	/* Vendor matches */
2294 	VENDOR_FLG(0x045e, /* MS Lifecam */
2295 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2296 	VENDOR_FLG(0x046d, /* Logitech */
2297 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
2298 	VENDOR_FLG(0x047f, /* Plantronics */
2299 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY),
2300 	VENDOR_FLG(0x0644, /* TEAC Corp. */
2301 		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY),
2302 	VENDOR_FLG(0x07fd, /* MOTU */
2303 		   QUIRK_FLAG_VALIDATE_RATES),
2304 	VENDOR_FLG(0x1235, /* Focusrite Novation */
2305 		   QUIRK_FLAG_VALIDATE_RATES),
2306 	VENDOR_FLG(0x1511, /* AURALiC */
2307 		   QUIRK_FLAG_DSD_RAW),
2308 	VENDOR_FLG(0x152a, /* Thesycon devices */
2309 		   QUIRK_FLAG_DSD_RAW),
2310 	VENDOR_FLG(0x18d1, /* iBasso devices */
2311 		   QUIRK_FLAG_DSD_RAW),
2312 	VENDOR_FLG(0x1de7, /* Phoenix Audio */
2313 		   QUIRK_FLAG_GET_SAMPLE_RATE),
2314 	VENDOR_FLG(0x20b1, /* XMOS based devices */
2315 		   QUIRK_FLAG_DSD_RAW),
2316 	VENDOR_FLG(0x21ed, /* Accuphase Laboratory */
2317 		   QUIRK_FLAG_DSD_RAW),
2318 	VENDOR_FLG(0x22d9, /* Oppo */
2319 		   QUIRK_FLAG_DSD_RAW),
2320 	VENDOR_FLG(0x23ba, /* Playback Design */
2321 		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY |
2322 		   QUIRK_FLAG_DSD_RAW),
2323 	VENDOR_FLG(0x25ce, /* Mytek devices */
2324 		   QUIRK_FLAG_DSD_RAW),
2325 	VENDOR_FLG(0x278b, /* Rotel? */
2326 		   QUIRK_FLAG_DSD_RAW),
2327 	VENDOR_FLG(0x292b, /* Gustard/Ess based devices */
2328 		   QUIRK_FLAG_DSD_RAW),
2329 	VENDOR_FLG(0x2972, /* FiiO devices */
2330 		   QUIRK_FLAG_DSD_RAW),
2331 	VENDOR_FLG(0x2ab6, /* T+A devices */
2332 		   QUIRK_FLAG_DSD_RAW),
2333 	VENDOR_FLG(0x2afd, /* McIntosh Laboratory, Inc. */
2334 		   QUIRK_FLAG_DSD_RAW),
2335 	VENDOR_FLG(0x2d87, /* Cayin device */
2336 		   QUIRK_FLAG_DSD_RAW),
2337 	VENDOR_FLG(0x3336, /* HEM devices */
2338 		   QUIRK_FLAG_DSD_RAW),
2339 	VENDOR_FLG(0x3353, /* Khadas devices */
2340 		   QUIRK_FLAG_DSD_RAW),
2341 	VENDOR_FLG(0x35f4, /* MSB Technology */
2342 		   QUIRK_FLAG_DSD_RAW),
2343 	VENDOR_FLG(0x3842, /* EVGA */
2344 		   QUIRK_FLAG_DSD_RAW),
2345 	VENDOR_FLG(0xc502, /* HiBy devices */
2346 		   QUIRK_FLAG_DSD_RAW),
2347 
2348 	{} /* terminator */
2349 };
2350 
2351 void snd_usb_init_quirk_flags(struct snd_usb_audio *chip)
2352 {
2353 	const struct usb_audio_quirk_flags_table *p;
2354 
2355 	for (p = quirk_flags_table; p->id; p++) {
2356 		if (chip->usb_id == p->id ||
2357 		    (!USB_ID_PRODUCT(p->id) &&
2358 		     USB_ID_VENDOR(chip->usb_id) == USB_ID_VENDOR(p->id))) {
2359 			usb_audio_dbg(chip,
2360 				      "Set quirk_flags 0x%x for device %04x:%04x\n",
2361 				      p->flags, USB_ID_VENDOR(chip->usb_id),
2362 				      USB_ID_PRODUCT(chip->usb_id));
2363 			chip->quirk_flags |= p->flags;
2364 			return;
2365 		}
2366 	}
2367 }
2368