xref: /openbmc/linux/sound/usb/quirks.c (revision 0a907292)
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 "quirks.h"
23 #include "helper.h"
24 #include "endpoint.h"
25 #include "pcm.h"
26 #include "clock.h"
27 #include "stream.h"
28 
29 /*
30  * handle the quirks for the contained interfaces
31  */
32 static int create_composite_quirk(struct snd_usb_audio *chip,
33 				  struct usb_interface *iface,
34 				  struct usb_driver *driver,
35 				  const struct snd_usb_audio_quirk *quirk_comp)
36 {
37 	int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
38 	const struct snd_usb_audio_quirk *quirk;
39 	int err;
40 
41 	for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) {
42 		iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
43 		if (!iface)
44 			continue;
45 		if (quirk->ifnum != probed_ifnum &&
46 		    usb_interface_claimed(iface))
47 			continue;
48 		err = snd_usb_create_quirk(chip, iface, driver, quirk);
49 		if (err < 0)
50 			return err;
51 	}
52 
53 	for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) {
54 		iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
55 		if (!iface)
56 			continue;
57 		if (quirk->ifnum != probed_ifnum &&
58 		    !usb_interface_claimed(iface)) {
59 			err = usb_driver_claim_interface(driver, iface,
60 							 USB_AUDIO_IFACE_UNUSED);
61 			if (err < 0)
62 				return err;
63 		}
64 	}
65 
66 	return 0;
67 }
68 
69 static int ignore_interface_quirk(struct snd_usb_audio *chip,
70 				  struct usb_interface *iface,
71 				  struct usb_driver *driver,
72 				  const struct snd_usb_audio_quirk *quirk)
73 {
74 	return 0;
75 }
76 
77 
78 static int create_any_midi_quirk(struct snd_usb_audio *chip,
79 				 struct usb_interface *intf,
80 				 struct usb_driver *driver,
81 				 const struct snd_usb_audio_quirk *quirk)
82 {
83 	return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk);
84 }
85 
86 /*
87  * create a stream for an interface with proper descriptors
88  */
89 static int create_standard_audio_quirk(struct snd_usb_audio *chip,
90 				       struct usb_interface *iface,
91 				       struct usb_driver *driver,
92 				       const struct snd_usb_audio_quirk *quirk)
93 {
94 	struct usb_host_interface *alts;
95 	struct usb_interface_descriptor *altsd;
96 	int err;
97 
98 	alts = &iface->altsetting[0];
99 	altsd = get_iface_desc(alts);
100 	err = snd_usb_parse_audio_interface(chip, altsd->bInterfaceNumber);
101 	if (err < 0) {
102 		usb_audio_err(chip, "cannot setup if %d: error %d\n",
103 			   altsd->bInterfaceNumber, err);
104 		return err;
105 	}
106 	/* reset the current interface */
107 	usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
108 	return 0;
109 }
110 
111 /* create the audio stream and the corresponding endpoints from the fixed
112  * audioformat object; this is used for quirks with the fixed EPs
113  */
114 static int add_audio_stream_from_fixed_fmt(struct snd_usb_audio *chip,
115 					   struct audioformat *fp)
116 {
117 	int stream, err;
118 
119 	stream = (fp->endpoint & USB_DIR_IN) ?
120 		SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
121 
122 	snd_usb_audioformat_set_sync_ep(chip, fp);
123 
124 	err = snd_usb_add_audio_stream(chip, stream, fp);
125 	if (err < 0)
126 		return err;
127 
128 	err = snd_usb_add_endpoint(chip, fp->endpoint,
129 				   SND_USB_ENDPOINT_TYPE_DATA);
130 	if (err < 0)
131 		return err;
132 
133 	if (fp->sync_ep) {
134 		err = snd_usb_add_endpoint(chip, fp->sync_ep,
135 					   fp->implicit_fb ?
136 					   SND_USB_ENDPOINT_TYPE_DATA :
137 					   SND_USB_ENDPOINT_TYPE_SYNC);
138 		if (err < 0)
139 			return err;
140 	}
141 
142 	return 0;
143 }
144 
145 /*
146  * create a stream for an endpoint/altsetting without proper descriptors
147  */
148 static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
149 				     struct usb_interface *iface,
150 				     struct usb_driver *driver,
151 				     const struct snd_usb_audio_quirk *quirk)
152 {
153 	struct audioformat *fp;
154 	struct usb_host_interface *alts;
155 	struct usb_interface_descriptor *altsd;
156 	unsigned *rate_table = NULL;
157 	int err;
158 
159 	fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
160 	if (!fp)
161 		return -ENOMEM;
162 
163 	INIT_LIST_HEAD(&fp->list);
164 	if (fp->nr_rates > MAX_NR_RATES) {
165 		kfree(fp);
166 		return -EINVAL;
167 	}
168 	if (fp->nr_rates > 0) {
169 		rate_table = kmemdup(fp->rate_table,
170 				     sizeof(int) * fp->nr_rates, GFP_KERNEL);
171 		if (!rate_table) {
172 			kfree(fp);
173 			return -ENOMEM;
174 		}
175 		fp->rate_table = rate_table;
176 	}
177 
178 	if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
179 	    fp->altset_idx >= iface->num_altsetting) {
180 		err = -EINVAL;
181 		goto error;
182 	}
183 	alts = &iface->altsetting[fp->altset_idx];
184 	altsd = get_iface_desc(alts);
185 	if (altsd->bNumEndpoints <= fp->ep_idx) {
186 		err = -EINVAL;
187 		goto error;
188 	}
189 
190 	fp->protocol = altsd->bInterfaceProtocol;
191 
192 	if (fp->datainterval == 0)
193 		fp->datainterval = snd_usb_parse_datainterval(chip, alts);
194 	if (fp->maxpacksize == 0)
195 		fp->maxpacksize = le16_to_cpu(get_endpoint(alts, fp->ep_idx)->wMaxPacketSize);
196 	if (!fp->fmt_type)
197 		fp->fmt_type = UAC_FORMAT_TYPE_I;
198 
199 	err = add_audio_stream_from_fixed_fmt(chip, fp);
200 	if (err < 0)
201 		goto error;
202 
203 	usb_set_interface(chip->dev, fp->iface, 0);
204 	snd_usb_init_pitch(chip, fp);
205 	snd_usb_init_sample_rate(chip, fp, fp->rate_max);
206 	return 0;
207 
208  error:
209 	list_del(&fp->list); /* unlink for avoiding double-free */
210 	kfree(fp);
211 	kfree(rate_table);
212 	return err;
213 }
214 
215 static int create_auto_pcm_quirk(struct snd_usb_audio *chip,
216 				 struct usb_interface *iface,
217 				 struct usb_driver *driver)
218 {
219 	struct usb_host_interface *alts;
220 	struct usb_interface_descriptor *altsd;
221 	struct usb_endpoint_descriptor *epd;
222 	struct uac1_as_header_descriptor *ashd;
223 	struct uac_format_type_i_discrete_descriptor *fmtd;
224 
225 	/*
226 	 * Most Roland/Yamaha audio streaming interfaces have more or less
227 	 * standard descriptors, but older devices might lack descriptors, and
228 	 * future ones might change, so ensure that we fail silently if the
229 	 * interface doesn't look exactly right.
230 	 */
231 
232 	/* must have a non-zero altsetting for streaming */
233 	if (iface->num_altsetting < 2)
234 		return -ENODEV;
235 	alts = &iface->altsetting[1];
236 	altsd = get_iface_desc(alts);
237 
238 	/* must have an isochronous endpoint for streaming */
239 	if (altsd->bNumEndpoints < 1)
240 		return -ENODEV;
241 	epd = get_endpoint(alts, 0);
242 	if (!usb_endpoint_xfer_isoc(epd))
243 		return -ENODEV;
244 
245 	/* must have format descriptors */
246 	ashd = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL,
247 				       UAC_AS_GENERAL);
248 	fmtd = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL,
249 				       UAC_FORMAT_TYPE);
250 	if (!ashd || ashd->bLength < 7 ||
251 	    !fmtd || fmtd->bLength < 8)
252 		return -ENODEV;
253 
254 	return create_standard_audio_quirk(chip, iface, driver, NULL);
255 }
256 
257 static int create_yamaha_midi_quirk(struct snd_usb_audio *chip,
258 				    struct usb_interface *iface,
259 				    struct usb_driver *driver,
260 				    struct usb_host_interface *alts)
261 {
262 	static const struct snd_usb_audio_quirk yamaha_midi_quirk = {
263 		.type = QUIRK_MIDI_YAMAHA
264 	};
265 	struct usb_midi_in_jack_descriptor *injd;
266 	struct usb_midi_out_jack_descriptor *outjd;
267 
268 	/* must have some valid jack descriptors */
269 	injd = snd_usb_find_csint_desc(alts->extra, alts->extralen,
270 				       NULL, USB_MS_MIDI_IN_JACK);
271 	outjd = snd_usb_find_csint_desc(alts->extra, alts->extralen,
272 					NULL, USB_MS_MIDI_OUT_JACK);
273 	if (!injd && !outjd)
274 		return -ENODEV;
275 	if ((injd && !snd_usb_validate_midi_desc(injd)) ||
276 	    (outjd && !snd_usb_validate_midi_desc(outjd)))
277 		return -ENODEV;
278 	if (injd && (injd->bLength < 5 ||
279 		     (injd->bJackType != USB_MS_EMBEDDED &&
280 		      injd->bJackType != USB_MS_EXTERNAL)))
281 		return -ENODEV;
282 	if (outjd && (outjd->bLength < 6 ||
283 		      (outjd->bJackType != USB_MS_EMBEDDED &&
284 		       outjd->bJackType != USB_MS_EXTERNAL)))
285 		return -ENODEV;
286 	return create_any_midi_quirk(chip, iface, driver, &yamaha_midi_quirk);
287 }
288 
289 static int create_roland_midi_quirk(struct snd_usb_audio *chip,
290 				    struct usb_interface *iface,
291 				    struct usb_driver *driver,
292 				    struct usb_host_interface *alts)
293 {
294 	static const struct snd_usb_audio_quirk roland_midi_quirk = {
295 		.type = QUIRK_MIDI_ROLAND
296 	};
297 	u8 *roland_desc = NULL;
298 
299 	/* might have a vendor-specific descriptor <06 24 F1 02 ...> */
300 	for (;;) {
301 		roland_desc = snd_usb_find_csint_desc(alts->extra,
302 						      alts->extralen,
303 						      roland_desc, 0xf1);
304 		if (!roland_desc)
305 			return -ENODEV;
306 		if (roland_desc[0] < 6 || roland_desc[3] != 2)
307 			continue;
308 		return create_any_midi_quirk(chip, iface, driver,
309 					     &roland_midi_quirk);
310 	}
311 }
312 
313 static int create_std_midi_quirk(struct snd_usb_audio *chip,
314 				 struct usb_interface *iface,
315 				 struct usb_driver *driver,
316 				 struct usb_host_interface *alts)
317 {
318 	struct usb_ms_header_descriptor *mshd;
319 	struct usb_ms_endpoint_descriptor *msepd;
320 
321 	/* must have the MIDIStreaming interface header descriptor*/
322 	mshd = (struct usb_ms_header_descriptor *)alts->extra;
323 	if (alts->extralen < 7 ||
324 	    mshd->bLength < 7 ||
325 	    mshd->bDescriptorType != USB_DT_CS_INTERFACE ||
326 	    mshd->bDescriptorSubtype != USB_MS_HEADER)
327 		return -ENODEV;
328 	/* must have the MIDIStreaming endpoint descriptor*/
329 	msepd = (struct usb_ms_endpoint_descriptor *)alts->endpoint[0].extra;
330 	if (alts->endpoint[0].extralen < 4 ||
331 	    msepd->bLength < 4 ||
332 	    msepd->bDescriptorType != USB_DT_CS_ENDPOINT ||
333 	    msepd->bDescriptorSubtype != UAC_MS_GENERAL ||
334 	    msepd->bNumEmbMIDIJack < 1 ||
335 	    msepd->bNumEmbMIDIJack > 16)
336 		return -ENODEV;
337 
338 	return create_any_midi_quirk(chip, iface, driver, NULL);
339 }
340 
341 static int create_auto_midi_quirk(struct snd_usb_audio *chip,
342 				  struct usb_interface *iface,
343 				  struct usb_driver *driver)
344 {
345 	struct usb_host_interface *alts;
346 	struct usb_interface_descriptor *altsd;
347 	struct usb_endpoint_descriptor *epd;
348 	int err;
349 
350 	alts = &iface->altsetting[0];
351 	altsd = get_iface_desc(alts);
352 
353 	/* must have at least one bulk/interrupt endpoint for streaming */
354 	if (altsd->bNumEndpoints < 1)
355 		return -ENODEV;
356 	epd = get_endpoint(alts, 0);
357 	if (!usb_endpoint_xfer_bulk(epd) &&
358 	    !usb_endpoint_xfer_int(epd))
359 		return -ENODEV;
360 
361 	switch (USB_ID_VENDOR(chip->usb_id)) {
362 	case 0x0499: /* Yamaha */
363 		err = create_yamaha_midi_quirk(chip, iface, driver, alts);
364 		if (err != -ENODEV)
365 			return err;
366 		break;
367 	case 0x0582: /* Roland */
368 		err = create_roland_midi_quirk(chip, iface, driver, alts);
369 		if (err != -ENODEV)
370 			return err;
371 		break;
372 	}
373 
374 	return create_std_midi_quirk(chip, iface, driver, alts);
375 }
376 
377 static int create_autodetect_quirk(struct snd_usb_audio *chip,
378 				   struct usb_interface *iface,
379 				   struct usb_driver *driver)
380 {
381 	int err;
382 
383 	err = create_auto_pcm_quirk(chip, iface, driver);
384 	if (err == -ENODEV)
385 		err = create_auto_midi_quirk(chip, iface, driver);
386 	return err;
387 }
388 
389 static int create_autodetect_quirks(struct snd_usb_audio *chip,
390 				    struct usb_interface *iface,
391 				    struct usb_driver *driver,
392 				    const struct snd_usb_audio_quirk *quirk)
393 {
394 	int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
395 	int ifcount, ifnum, err;
396 
397 	err = create_autodetect_quirk(chip, iface, driver);
398 	if (err < 0)
399 		return err;
400 
401 	/*
402 	 * ALSA PCM playback/capture devices cannot be registered in two steps,
403 	 * so we have to claim the other corresponding interface here.
404 	 */
405 	ifcount = chip->dev->actconfig->desc.bNumInterfaces;
406 	for (ifnum = 0; ifnum < ifcount; ifnum++) {
407 		if (ifnum == probed_ifnum || quirk->ifnum >= 0)
408 			continue;
409 		iface = usb_ifnum_to_if(chip->dev, ifnum);
410 		if (!iface ||
411 		    usb_interface_claimed(iface) ||
412 		    get_iface_desc(iface->altsetting)->bInterfaceClass !=
413 							USB_CLASS_VENDOR_SPEC)
414 			continue;
415 
416 		err = create_autodetect_quirk(chip, iface, driver);
417 		if (err >= 0) {
418 			err = usb_driver_claim_interface(driver, iface,
419 							 USB_AUDIO_IFACE_UNUSED);
420 			if (err < 0)
421 				return err;
422 		}
423 	}
424 
425 	return 0;
426 }
427 
428 /*
429  * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface.
430  * The only way to detect the sample rate is by looking at wMaxPacketSize.
431  */
432 static int create_uaxx_quirk(struct snd_usb_audio *chip,
433 			     struct usb_interface *iface,
434 			     struct usb_driver *driver,
435 			     const struct snd_usb_audio_quirk *quirk)
436 {
437 	static const struct audioformat ua_format = {
438 		.formats = SNDRV_PCM_FMTBIT_S24_3LE,
439 		.channels = 2,
440 		.fmt_type = UAC_FORMAT_TYPE_I,
441 		.altsetting = 1,
442 		.altset_idx = 1,
443 		.rates = SNDRV_PCM_RATE_CONTINUOUS,
444 	};
445 	struct usb_host_interface *alts;
446 	struct usb_interface_descriptor *altsd;
447 	struct audioformat *fp;
448 	int err;
449 
450 	/* both PCM and MIDI interfaces have 2 or more altsettings */
451 	if (iface->num_altsetting < 2)
452 		return -ENXIO;
453 	alts = &iface->altsetting[1];
454 	altsd = get_iface_desc(alts);
455 
456 	if (altsd->bNumEndpoints == 2) {
457 		static const struct snd_usb_midi_endpoint_info ua700_ep = {
458 			.out_cables = 0x0003,
459 			.in_cables  = 0x0003
460 		};
461 		static const struct snd_usb_audio_quirk ua700_quirk = {
462 			.type = QUIRK_MIDI_FIXED_ENDPOINT,
463 			.data = &ua700_ep
464 		};
465 		static const struct snd_usb_midi_endpoint_info uaxx_ep = {
466 			.out_cables = 0x0001,
467 			.in_cables  = 0x0001
468 		};
469 		static const struct snd_usb_audio_quirk uaxx_quirk = {
470 			.type = QUIRK_MIDI_FIXED_ENDPOINT,
471 			.data = &uaxx_ep
472 		};
473 		const struct snd_usb_audio_quirk *quirk =
474 			chip->usb_id == USB_ID(0x0582, 0x002b)
475 			? &ua700_quirk : &uaxx_quirk;
476 		return __snd_usbmidi_create(chip->card, iface,
477 					  &chip->midi_list, quirk,
478 					  chip->usb_id);
479 	}
480 
481 	if (altsd->bNumEndpoints != 1)
482 		return -ENXIO;
483 
484 	fp = kmemdup(&ua_format, sizeof(*fp), GFP_KERNEL);
485 	if (!fp)
486 		return -ENOMEM;
487 
488 	fp->iface = altsd->bInterfaceNumber;
489 	fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
490 	fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
491 	fp->datainterval = 0;
492 	fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
493 	INIT_LIST_HEAD(&fp->list);
494 
495 	switch (fp->maxpacksize) {
496 	case 0x120:
497 		fp->rate_max = fp->rate_min = 44100;
498 		break;
499 	case 0x138:
500 	case 0x140:
501 		fp->rate_max = fp->rate_min = 48000;
502 		break;
503 	case 0x258:
504 	case 0x260:
505 		fp->rate_max = fp->rate_min = 96000;
506 		break;
507 	default:
508 		usb_audio_err(chip, "unknown sample rate\n");
509 		kfree(fp);
510 		return -ENXIO;
511 	}
512 
513 	err = add_audio_stream_from_fixed_fmt(chip, fp);
514 	if (err < 0) {
515 		list_del(&fp->list); /* unlink for avoiding double-free */
516 		kfree(fp);
517 		return err;
518 	}
519 	usb_set_interface(chip->dev, fp->iface, 0);
520 	return 0;
521 }
522 
523 /*
524  * Create a standard mixer for the specified interface.
525  */
526 static int create_standard_mixer_quirk(struct snd_usb_audio *chip,
527 				       struct usb_interface *iface,
528 				       struct usb_driver *driver,
529 				       const struct snd_usb_audio_quirk *quirk)
530 {
531 	if (quirk->ifnum < 0)
532 		return 0;
533 
534 	return snd_usb_create_mixer(chip, quirk->ifnum);
535 }
536 
537 /*
538  * audio-interface quirks
539  *
540  * returns zero if no standard audio/MIDI parsing is needed.
541  * returns a positive value if standard audio/midi interfaces are parsed
542  * after this.
543  * returns a negative value at error.
544  */
545 int snd_usb_create_quirk(struct snd_usb_audio *chip,
546 			 struct usb_interface *iface,
547 			 struct usb_driver *driver,
548 			 const struct snd_usb_audio_quirk *quirk)
549 {
550 	typedef int (*quirk_func_t)(struct snd_usb_audio *,
551 				    struct usb_interface *,
552 				    struct usb_driver *,
553 				    const struct snd_usb_audio_quirk *);
554 	static const quirk_func_t quirk_funcs[] = {
555 		[QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
556 		[QUIRK_COMPOSITE] = create_composite_quirk,
557 		[QUIRK_AUTODETECT] = create_autodetect_quirks,
558 		[QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk,
559 		[QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk,
560 		[QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
561 		[QUIRK_MIDI_ROLAND] = create_any_midi_quirk,
562 		[QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
563 		[QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
564 		[QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
565 		[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
566 		[QUIRK_MIDI_CME] = create_any_midi_quirk,
567 		[QUIRK_MIDI_AKAI] = create_any_midi_quirk,
568 		[QUIRK_MIDI_FTDI] = create_any_midi_quirk,
569 		[QUIRK_MIDI_CH345] = create_any_midi_quirk,
570 		[QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
571 		[QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
572 		[QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
573 		[QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk,
574 	};
575 
576 	if (quirk->type < QUIRK_TYPE_COUNT) {
577 		return quirk_funcs[quirk->type](chip, iface, driver, quirk);
578 	} else {
579 		usb_audio_err(chip, "invalid quirk type %d\n", quirk->type);
580 		return -ENXIO;
581 	}
582 }
583 
584 /*
585  * boot quirks
586  */
587 
588 #define EXTIGY_FIRMWARE_SIZE_OLD 794
589 #define EXTIGY_FIRMWARE_SIZE_NEW 483
590 
591 static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
592 {
593 	struct usb_host_config *config = dev->actconfig;
594 	int err;
595 
596 	if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
597 	    le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
598 		dev_dbg(&dev->dev, "sending Extigy boot sequence...\n");
599 		/* Send message to force it to reconnect with full interface. */
600 		err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
601 				      0x10, 0x43, 0x0001, 0x000a, NULL, 0);
602 		if (err < 0)
603 			dev_dbg(&dev->dev, "error sending boot message: %d\n", err);
604 		err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
605 				&dev->descriptor, sizeof(dev->descriptor));
606 		config = dev->actconfig;
607 		if (err < 0)
608 			dev_dbg(&dev->dev, "error usb_get_descriptor: %d\n", err);
609 		err = usb_reset_configuration(dev);
610 		if (err < 0)
611 			dev_dbg(&dev->dev, "error usb_reset_configuration: %d\n", err);
612 		dev_dbg(&dev->dev, "extigy_boot: new boot length = %d\n",
613 			    le16_to_cpu(get_cfg_desc(config)->wTotalLength));
614 		return -ENODEV; /* quit this anyway */
615 	}
616 	return 0;
617 }
618 
619 static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
620 {
621 	u8 buf = 1;
622 
623 	snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
624 			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
625 			0, 0, &buf, 1);
626 	if (buf == 0) {
627 		snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
628 				USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
629 				1, 2000, NULL, 0);
630 		return -ENODEV;
631 	}
632 	return 0;
633 }
634 
635 static int snd_usb_fasttrackpro_boot_quirk(struct usb_device *dev)
636 {
637 	int err;
638 
639 	if (dev->actconfig->desc.bConfigurationValue == 1) {
640 		dev_info(&dev->dev,
641 			   "Fast Track Pro switching to config #2\n");
642 		/* This function has to be available by the usb core module.
643 		 * if it is not avialable the boot quirk has to be left out
644 		 * and the configuration has to be set by udev or hotplug
645 		 * rules
646 		 */
647 		err = usb_driver_set_configuration(dev, 2);
648 		if (err < 0)
649 			dev_dbg(&dev->dev,
650 				"error usb_driver_set_configuration: %d\n",
651 				err);
652 		/* Always return an error, so that we stop creating a device
653 		   that will just be destroyed and recreated with a new
654 		   configuration */
655 		return -ENODEV;
656 	} else
657 		dev_info(&dev->dev, "Fast Track Pro config OK\n");
658 
659 	return 0;
660 }
661 
662 /*
663  * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely
664  * documented in the device's data sheet.
665  */
666 static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
667 {
668 	u8 buf[4];
669 	buf[0] = 0x20;
670 	buf[1] = value & 0xff;
671 	buf[2] = (value >> 8) & 0xff;
672 	buf[3] = reg;
673 	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
674 			       USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
675 			       0, 0, &buf, 4);
676 }
677 
678 static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
679 {
680 	/*
681 	 * Enable line-out driver mode, set headphone source to front
682 	 * channels, enable stereo mic.
683 	 */
684 	return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
685 }
686 
687 /*
688  * CM6206 registers from the CM6206 datasheet rev 2.1
689  */
690 #define CM6206_REG0_DMA_MASTER BIT(15)
691 #define CM6206_REG0_SPDIFO_RATE_48K (2 << 12)
692 #define CM6206_REG0_SPDIFO_RATE_96K (7 << 12)
693 /* Bit 4 thru 11 is the S/PDIF category code */
694 #define CM6206_REG0_SPDIFO_CAT_CODE_GENERAL (0 << 4)
695 #define CM6206_REG0_SPDIFO_EMPHASIS_CD BIT(3)
696 #define CM6206_REG0_SPDIFO_COPYRIGHT_NA BIT(2)
697 #define CM6206_REG0_SPDIFO_NON_AUDIO BIT(1)
698 #define CM6206_REG0_SPDIFO_PRO_FORMAT BIT(0)
699 
700 #define CM6206_REG1_TEST_SEL_CLK BIT(14)
701 #define CM6206_REG1_PLLBIN_EN BIT(13)
702 #define CM6206_REG1_SOFT_MUTE_EN BIT(12)
703 #define CM6206_REG1_GPIO4_OUT BIT(11)
704 #define CM6206_REG1_GPIO4_OE BIT(10)
705 #define CM6206_REG1_GPIO3_OUT BIT(9)
706 #define CM6206_REG1_GPIO3_OE BIT(8)
707 #define CM6206_REG1_GPIO2_OUT BIT(7)
708 #define CM6206_REG1_GPIO2_OE BIT(6)
709 #define CM6206_REG1_GPIO1_OUT BIT(5)
710 #define CM6206_REG1_GPIO1_OE BIT(4)
711 #define CM6206_REG1_SPDIFO_INVALID BIT(3)
712 #define CM6206_REG1_SPDIF_LOOP_EN BIT(2)
713 #define CM6206_REG1_SPDIFO_DIS BIT(1)
714 #define CM6206_REG1_SPDIFI_MIX BIT(0)
715 
716 #define CM6206_REG2_DRIVER_ON BIT(15)
717 #define CM6206_REG2_HEADP_SEL_SIDE_CHANNELS (0 << 13)
718 #define CM6206_REG2_HEADP_SEL_SURROUND_CHANNELS (1 << 13)
719 #define CM6206_REG2_HEADP_SEL_CENTER_SUBW (2 << 13)
720 #define CM6206_REG2_HEADP_SEL_FRONT_CHANNELS (3 << 13)
721 #define CM6206_REG2_MUTE_HEADPHONE_RIGHT BIT(12)
722 #define CM6206_REG2_MUTE_HEADPHONE_LEFT BIT(11)
723 #define CM6206_REG2_MUTE_REAR_SURROUND_RIGHT BIT(10)
724 #define CM6206_REG2_MUTE_REAR_SURROUND_LEFT BIT(9)
725 #define CM6206_REG2_MUTE_SIDE_SURROUND_RIGHT BIT(8)
726 #define CM6206_REG2_MUTE_SIDE_SURROUND_LEFT BIT(7)
727 #define CM6206_REG2_MUTE_SUBWOOFER BIT(6)
728 #define CM6206_REG2_MUTE_CENTER BIT(5)
729 #define CM6206_REG2_MUTE_RIGHT_FRONT BIT(3)
730 #define CM6206_REG2_MUTE_LEFT_FRONT BIT(3)
731 #define CM6206_REG2_EN_BTL BIT(2)
732 #define CM6206_REG2_MCUCLKSEL_1_5_MHZ (0)
733 #define CM6206_REG2_MCUCLKSEL_3_MHZ (1)
734 #define CM6206_REG2_MCUCLKSEL_6_MHZ (2)
735 #define CM6206_REG2_MCUCLKSEL_12_MHZ (3)
736 
737 /* Bit 11..13 sets the sensitivity to FLY tuner volume control VP/VD signal */
738 #define CM6206_REG3_FLYSPEED_DEFAULT (2 << 11)
739 #define CM6206_REG3_VRAP25EN BIT(10)
740 #define CM6206_REG3_MSEL1 BIT(9)
741 #define CM6206_REG3_SPDIFI_RATE_44_1K BIT(0 << 7)
742 #define CM6206_REG3_SPDIFI_RATE_48K BIT(2 << 7)
743 #define CM6206_REG3_SPDIFI_RATE_32K BIT(3 << 7)
744 #define CM6206_REG3_PINSEL BIT(6)
745 #define CM6206_REG3_FOE BIT(5)
746 #define CM6206_REG3_ROE BIT(4)
747 #define CM6206_REG3_CBOE BIT(3)
748 #define CM6206_REG3_LOSE BIT(2)
749 #define CM6206_REG3_HPOE BIT(1)
750 #define CM6206_REG3_SPDIFI_CANREC BIT(0)
751 
752 #define CM6206_REG5_DA_RSTN BIT(13)
753 #define CM6206_REG5_AD_RSTN BIT(12)
754 #define CM6206_REG5_SPDIFO_AD2SPDO BIT(12)
755 #define CM6206_REG5_SPDIFO_SEL_FRONT (0 << 9)
756 #define CM6206_REG5_SPDIFO_SEL_SIDE_SUR (1 << 9)
757 #define CM6206_REG5_SPDIFO_SEL_CEN_LFE (2 << 9)
758 #define CM6206_REG5_SPDIFO_SEL_REAR_SUR (3 << 9)
759 #define CM6206_REG5_CODECM BIT(8)
760 #define CM6206_REG5_EN_HPF BIT(7)
761 #define CM6206_REG5_T_SEL_DSDA4 BIT(6)
762 #define CM6206_REG5_T_SEL_DSDA3 BIT(5)
763 #define CM6206_REG5_T_SEL_DSDA2 BIT(4)
764 #define CM6206_REG5_T_SEL_DSDA1 BIT(3)
765 #define CM6206_REG5_T_SEL_DSDAD_NORMAL 0
766 #define CM6206_REG5_T_SEL_DSDAD_FRONT 4
767 #define CM6206_REG5_T_SEL_DSDAD_S_SURROUND 5
768 #define CM6206_REG5_T_SEL_DSDAD_CEN_LFE 6
769 #define CM6206_REG5_T_SEL_DSDAD_R_SURROUND 7
770 
771 static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
772 {
773 	int err  = 0, reg;
774 	int val[] = {
775 		/*
776 		 * Values here are chosen based on sniffing USB traffic
777 		 * under Windows.
778 		 *
779 		 * REG0: DAC is master, sample rate 48kHz, no copyright
780 		 */
781 		CM6206_REG0_SPDIFO_RATE_48K |
782 		CM6206_REG0_SPDIFO_COPYRIGHT_NA,
783 		/*
784 		 * REG1: PLL binary search enable, soft mute enable.
785 		 */
786 		CM6206_REG1_PLLBIN_EN |
787 		CM6206_REG1_SOFT_MUTE_EN,
788 		/*
789 		 * REG2: enable output drivers,
790 		 * select front channels to the headphone output,
791 		 * then mute the headphone channels, run the MCU
792 		 * at 1.5 MHz.
793 		 */
794 		CM6206_REG2_DRIVER_ON |
795 		CM6206_REG2_HEADP_SEL_FRONT_CHANNELS |
796 		CM6206_REG2_MUTE_HEADPHONE_RIGHT |
797 		CM6206_REG2_MUTE_HEADPHONE_LEFT,
798 		/*
799 		 * REG3: default flyspeed, set 2.5V mic bias
800 		 * enable all line out ports and enable SPDIF
801 		 */
802 		CM6206_REG3_FLYSPEED_DEFAULT |
803 		CM6206_REG3_VRAP25EN |
804 		CM6206_REG3_FOE |
805 		CM6206_REG3_ROE |
806 		CM6206_REG3_CBOE |
807 		CM6206_REG3_LOSE |
808 		CM6206_REG3_HPOE |
809 		CM6206_REG3_SPDIFI_CANREC,
810 		/* REG4 is just a bunch of GPIO lines */
811 		0x0000,
812 		/* REG5: de-assert AD/DA reset signals */
813 		CM6206_REG5_DA_RSTN |
814 		CM6206_REG5_AD_RSTN };
815 
816 	for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
817 		err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
818 		if (err < 0)
819 			return err;
820 	}
821 
822 	return err;
823 }
824 
825 /* quirk for Plantronics GameCom 780 with CM6302 chip */
826 static int snd_usb_gamecon780_boot_quirk(struct usb_device *dev)
827 {
828 	/* set the initial volume and don't change; other values are either
829 	 * too loud or silent due to firmware bug (bko#65251)
830 	 */
831 	u8 buf[2] = { 0x74, 0xe3 };
832 	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
833 			USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
834 			UAC_FU_VOLUME << 8, 9 << 8, buf, 2);
835 }
836 
837 /*
838  * Novation Twitch DJ controller
839  * Focusrite Novation Saffire 6 USB audio card
840  */
841 static int snd_usb_novation_boot_quirk(struct usb_device *dev)
842 {
843 	/* preemptively set up the device because otherwise the
844 	 * raw MIDI endpoints are not active */
845 	usb_set_interface(dev, 0, 1);
846 	return 0;
847 }
848 
849 /*
850  * This call will put the synth in "USB send" mode, i.e it will send MIDI
851  * messages through USB (this is disabled at startup). The synth will
852  * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB
853  * sign on its LCD. Values here are chosen based on sniffing USB traffic
854  * under Windows.
855  */
856 static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
857 {
858 	int err, actual_length;
859 	/* "midi send" enable */
860 	static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
861 	void *buf;
862 
863 	if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x05)))
864 		return -EINVAL;
865 	buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
866 	if (!buf)
867 		return -ENOMEM;
868 	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
869 			ARRAY_SIZE(seq), &actual_length, 1000);
870 	kfree(buf);
871 	if (err < 0)
872 		return err;
873 
874 	return 0;
875 }
876 
877 /*
878  * Some sound cards from Native Instruments are in fact compliant to the USB
879  * audio standard of version 2 and other approved USB standards, even though
880  * they come up as vendor-specific device when first connected.
881  *
882  * However, they can be told to come up with a new set of descriptors
883  * upon their next enumeration, and the interfaces announced by the new
884  * descriptors will then be handled by the kernel's class drivers. As the
885  * product ID will also change, no further checks are required.
886  */
887 
888 static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
889 {
890 	int ret;
891 
892 	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
893 				  0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
894 				  1, 0, NULL, 0, 1000);
895 
896 	if (ret < 0)
897 		return ret;
898 
899 	usb_reset_device(dev);
900 
901 	/* return -EAGAIN, so the creation of an audio interface for this
902 	 * temporary device is aborted. The device will reconnect with a
903 	 * new product ID */
904 	return -EAGAIN;
905 }
906 
907 static void mbox2_setup_48_24_magic(struct usb_device *dev)
908 {
909 	u8 srate[3];
910 	u8 temp[12];
911 
912 	/* Choose 48000Hz permanently */
913 	srate[0] = 0x80;
914 	srate[1] = 0xbb;
915 	srate[2] = 0x00;
916 
917 	/* Send the magic! */
918 	snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
919 		0x01, 0x22, 0x0100, 0x0085, &temp, 0x0003);
920 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
921 		0x81, 0xa2, 0x0100, 0x0085, &srate, 0x0003);
922 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
923 		0x81, 0xa2, 0x0100, 0x0086, &srate, 0x0003);
924 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
925 		0x81, 0xa2, 0x0100, 0x0003, &srate, 0x0003);
926 	return;
927 }
928 
929 /* Digidesign Mbox 2 needs to load firmware onboard
930  * and driver must wait a few seconds for initialisation.
931  */
932 
933 #define MBOX2_FIRMWARE_SIZE    646
934 #define MBOX2_BOOT_LOADING     0x01 /* Hard coded into the device */
935 #define MBOX2_BOOT_READY       0x02 /* Hard coded into the device */
936 
937 static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
938 {
939 	struct usb_host_config *config = dev->actconfig;
940 	int err;
941 	u8 bootresponse[0x12];
942 	int fwsize;
943 	int count;
944 
945 	fwsize = le16_to_cpu(get_cfg_desc(config)->wTotalLength);
946 
947 	if (fwsize != MBOX2_FIRMWARE_SIZE) {
948 		dev_err(&dev->dev, "Invalid firmware size=%d.\n", fwsize);
949 		return -ENODEV;
950 	}
951 
952 	dev_dbg(&dev->dev, "Sending Digidesign Mbox 2 boot sequence...\n");
953 
954 	count = 0;
955 	bootresponse[0] = MBOX2_BOOT_LOADING;
956 	while ((bootresponse[0] == MBOX2_BOOT_LOADING) && (count < 10)) {
957 		msleep(500); /* 0.5 second delay */
958 		snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
959 			/* Control magic - load onboard firmware */
960 			0x85, 0xc0, 0x0001, 0x0000, &bootresponse, 0x0012);
961 		if (bootresponse[0] == MBOX2_BOOT_READY)
962 			break;
963 		dev_dbg(&dev->dev, "device not ready, resending boot sequence...\n");
964 		count++;
965 	}
966 
967 	if (bootresponse[0] != MBOX2_BOOT_READY) {
968 		dev_err(&dev->dev, "Unknown bootresponse=%d, or timed out, ignoring device.\n", bootresponse[0]);
969 		return -ENODEV;
970 	}
971 
972 	dev_dbg(&dev->dev, "device initialised!\n");
973 
974 	err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
975 		&dev->descriptor, sizeof(dev->descriptor));
976 	config = dev->actconfig;
977 	if (err < 0)
978 		dev_dbg(&dev->dev, "error usb_get_descriptor: %d\n", err);
979 
980 	err = usb_reset_configuration(dev);
981 	if (err < 0)
982 		dev_dbg(&dev->dev, "error usb_reset_configuration: %d\n", err);
983 	dev_dbg(&dev->dev, "mbox2_boot: new boot length = %d\n",
984 		le16_to_cpu(get_cfg_desc(config)->wTotalLength));
985 
986 	mbox2_setup_48_24_magic(dev);
987 
988 	dev_info(&dev->dev, "Digidesign Mbox 2: 24bit 48kHz");
989 
990 	return 0; /* Successful boot */
991 }
992 
993 static int snd_usb_axefx3_boot_quirk(struct usb_device *dev)
994 {
995 	int err;
996 
997 	dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n");
998 
999 	/* If the Axe-Fx III has not fully booted, it will timeout when trying
1000 	 * to enable the audio streaming interface. A more generous timeout is
1001 	 * used here to detect when the Axe-Fx III has finished booting as the
1002 	 * set interface message will be acked once it has
1003 	 */
1004 	err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1005 				USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
1006 				1, 1, NULL, 0, 120000);
1007 	if (err < 0) {
1008 		dev_err(&dev->dev,
1009 			"failed waiting for Axe-Fx III to boot: %d\n", err);
1010 		return err;
1011 	}
1012 
1013 	dev_dbg(&dev->dev, "Axe-Fx III is now ready\n");
1014 
1015 	err = usb_set_interface(dev, 1, 0);
1016 	if (err < 0)
1017 		dev_dbg(&dev->dev,
1018 			"error stopping Axe-Fx III interface: %d\n", err);
1019 
1020 	return 0;
1021 }
1022 
1023 
1024 #define MICROBOOK_BUF_SIZE 128
1025 
1026 static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
1027 						int buf_size, int *length)
1028 {
1029 	int err, actual_length;
1030 
1031 	if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x01)))
1032 		return -EINVAL;
1033 	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length,
1034 				&actual_length, 1000);
1035 	if (err < 0)
1036 		return err;
1037 
1038 	print_hex_dump(KERN_DEBUG, "MicroBookII snd: ", DUMP_PREFIX_NONE, 16, 1,
1039 		       buf, actual_length, false);
1040 
1041 	memset(buf, 0, buf_size);
1042 
1043 	if (usb_pipe_type_check(dev, usb_rcvintpipe(dev, 0x82)))
1044 		return -EINVAL;
1045 	err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size,
1046 				&actual_length, 1000);
1047 	if (err < 0)
1048 		return err;
1049 
1050 	print_hex_dump(KERN_DEBUG, "MicroBookII rcv: ", DUMP_PREFIX_NONE, 16, 1,
1051 		       buf, actual_length, false);
1052 
1053 	*length = actual_length;
1054 	return 0;
1055 }
1056 
1057 static int snd_usb_motu_microbookii_boot_quirk(struct usb_device *dev)
1058 {
1059 	int err, actual_length, poll_attempts = 0;
1060 	static const u8 set_samplerate_seq[] = { 0x00, 0x00, 0x00, 0x00,
1061 						 0x00, 0x00, 0x0b, 0x14,
1062 						 0x00, 0x00, 0x00, 0x01 };
1063 	static const u8 poll_ready_seq[] = { 0x00, 0x04, 0x00, 0x00,
1064 					     0x00, 0x00, 0x0b, 0x18 };
1065 	u8 *buf = kzalloc(MICROBOOK_BUF_SIZE, GFP_KERNEL);
1066 
1067 	if (!buf)
1068 		return -ENOMEM;
1069 
1070 	dev_info(&dev->dev, "Waiting for MOTU Microbook II to boot up...\n");
1071 
1072 	/* First we tell the device which sample rate to use. */
1073 	memcpy(buf, set_samplerate_seq, sizeof(set_samplerate_seq));
1074 	actual_length = sizeof(set_samplerate_seq);
1075 	err = snd_usb_motu_microbookii_communicate(dev, buf, MICROBOOK_BUF_SIZE,
1076 						   &actual_length);
1077 
1078 	if (err < 0) {
1079 		dev_err(&dev->dev,
1080 			"failed setting the sample rate for Motu MicroBook II: %d\n",
1081 			err);
1082 		goto free_buf;
1083 	}
1084 
1085 	/* Then we poll every 100 ms until the device informs of its readiness. */
1086 	while (true) {
1087 		if (++poll_attempts > 100) {
1088 			dev_err(&dev->dev,
1089 				"failed booting Motu MicroBook II: timeout\n");
1090 			err = -ENODEV;
1091 			goto free_buf;
1092 		}
1093 
1094 		memset(buf, 0, MICROBOOK_BUF_SIZE);
1095 		memcpy(buf, poll_ready_seq, sizeof(poll_ready_seq));
1096 
1097 		actual_length = sizeof(poll_ready_seq);
1098 		err = snd_usb_motu_microbookii_communicate(
1099 			dev, buf, MICROBOOK_BUF_SIZE, &actual_length);
1100 		if (err < 0) {
1101 			dev_err(&dev->dev,
1102 				"failed booting Motu MicroBook II: communication error %d\n",
1103 				err);
1104 			goto free_buf;
1105 		}
1106 
1107 		/* the device signals its readiness through a message of the
1108 		 * form
1109 		 *           XX 06 00 00 00 00 0b 18  00 00 00 01
1110 		 * If the device is not yet ready to accept audio data, the
1111 		 * last byte of that sequence is 00.
1112 		 */
1113 		if (actual_length == 12 && buf[actual_length - 1] == 1)
1114 			break;
1115 
1116 		msleep(100);
1117 	}
1118 
1119 	dev_info(&dev->dev, "MOTU MicroBook II ready\n");
1120 
1121 free_buf:
1122 	kfree(buf);
1123 	return err;
1124 }
1125 
1126 static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev)
1127 {
1128 	msleep(2000);
1129 
1130 	return 0;
1131 }
1132 
1133 /*
1134  * Setup quirks
1135  */
1136 #define MAUDIO_SET		0x01 /* parse device_setup */
1137 #define MAUDIO_SET_COMPATIBLE	0x80 /* use only "win-compatible" interfaces */
1138 #define MAUDIO_SET_DTS		0x02 /* enable DTS Digital Output */
1139 #define MAUDIO_SET_96K		0x04 /* 48-96kHz rate if set, 8-48kHz otherwise */
1140 #define MAUDIO_SET_24B		0x08 /* 24bits sample if set, 16bits otherwise */
1141 #define MAUDIO_SET_DI		0x10 /* enable Digital Input */
1142 #define MAUDIO_SET_MASK		0x1f /* bit mask for setup value */
1143 #define MAUDIO_SET_24B_48K_DI	 0x19 /* 24bits+48kHz+Digital Input */
1144 #define MAUDIO_SET_24B_48K_NOTDI 0x09 /* 24bits+48kHz+No Digital Input */
1145 #define MAUDIO_SET_16B_48K_DI	 0x11 /* 16bits+48kHz+Digital Input */
1146 #define MAUDIO_SET_16B_48K_NOTDI 0x01 /* 16bits+48kHz+No Digital Input */
1147 
1148 static int quattro_skip_setting_quirk(struct snd_usb_audio *chip,
1149 				      int iface, int altno)
1150 {
1151 	/* Reset ALL ifaces to 0 altsetting.
1152 	 * Call it for every possible altsetting of every interface.
1153 	 */
1154 	usb_set_interface(chip->dev, iface, 0);
1155 	if (chip->setup & MAUDIO_SET) {
1156 		if (chip->setup & MAUDIO_SET_COMPATIBLE) {
1157 			if (iface != 1 && iface != 2)
1158 				return 1; /* skip all interfaces but 1 and 2 */
1159 		} else {
1160 			unsigned int mask;
1161 			if (iface == 1 || iface == 2)
1162 				return 1; /* skip interfaces 1 and 2 */
1163 			if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
1164 				return 1; /* skip this altsetting */
1165 			mask = chip->setup & MAUDIO_SET_MASK;
1166 			if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
1167 				return 1; /* skip this altsetting */
1168 			if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
1169 				return 1; /* skip this altsetting */
1170 			if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 4)
1171 				return 1; /* skip this altsetting */
1172 		}
1173 	}
1174 	usb_audio_dbg(chip,
1175 		    "using altsetting %d for interface %d config %d\n",
1176 		    altno, iface, chip->setup);
1177 	return 0; /* keep this altsetting */
1178 }
1179 
1180 static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
1181 					 int iface,
1182 					 int altno)
1183 {
1184 	/* Reset ALL ifaces to 0 altsetting.
1185 	 * Call it for every possible altsetting of every interface.
1186 	 */
1187 	usb_set_interface(chip->dev, iface, 0);
1188 
1189 	if (chip->setup & MAUDIO_SET) {
1190 		unsigned int mask;
1191 		if ((chip->setup & MAUDIO_SET_DTS) && altno != 6)
1192 			return 1; /* skip this altsetting */
1193 		if ((chip->setup & MAUDIO_SET_96K) && altno != 1)
1194 			return 1; /* skip this altsetting */
1195 		mask = chip->setup & MAUDIO_SET_MASK;
1196 		if (mask == MAUDIO_SET_24B_48K_DI && altno != 2)
1197 			return 1; /* skip this altsetting */
1198 		if (mask == MAUDIO_SET_24B_48K_NOTDI && altno != 3)
1199 			return 1; /* skip this altsetting */
1200 		if (mask == MAUDIO_SET_16B_48K_DI && altno != 4)
1201 			return 1; /* skip this altsetting */
1202 		if (mask == MAUDIO_SET_16B_48K_NOTDI && altno != 5)
1203 			return 1; /* skip this altsetting */
1204 	}
1205 
1206 	return 0; /* keep this altsetting */
1207 }
1208 
1209 static int fasttrackpro_skip_setting_quirk(struct snd_usb_audio *chip,
1210 					   int iface, int altno)
1211 {
1212 	/* Reset ALL ifaces to 0 altsetting.
1213 	 * Call it for every possible altsetting of every interface.
1214 	 */
1215 	usb_set_interface(chip->dev, iface, 0);
1216 
1217 	/* possible configuration where both inputs and only one output is
1218 	 *used is not supported by the current setup
1219 	 */
1220 	if (chip->setup & (MAUDIO_SET | MAUDIO_SET_24B)) {
1221 		if (chip->setup & MAUDIO_SET_96K) {
1222 			if (altno != 3 && altno != 6)
1223 				return 1;
1224 		} else if (chip->setup & MAUDIO_SET_DI) {
1225 			if (iface == 4)
1226 				return 1; /* no analog input */
1227 			if (altno != 2 && altno != 5)
1228 				return 1; /* enable only altsets 2 and 5 */
1229 		} else {
1230 			if (iface == 5)
1231 				return 1; /* disable digialt input */
1232 			if (altno != 2 && altno != 5)
1233 				return 1; /* enalbe only altsets 2 and 5 */
1234 		}
1235 	} else {
1236 		/* keep only 16-Bit mode */
1237 		if (altno != 1)
1238 			return 1;
1239 	}
1240 
1241 	usb_audio_dbg(chip,
1242 		    "using altsetting %d for interface %d config %d\n",
1243 		    altno, iface, chip->setup);
1244 	return 0; /* keep this altsetting */
1245 }
1246 
1247 static int s1810c_skip_setting_quirk(struct snd_usb_audio *chip,
1248 					   int iface, int altno)
1249 {
1250 	/*
1251 	 * Altno settings:
1252 	 *
1253 	 * Playback (Interface 1):
1254 	 * 1: 6 Analog + 2 S/PDIF
1255 	 * 2: 6 Analog + 2 S/PDIF
1256 	 * 3: 6 Analog
1257 	 *
1258 	 * Capture (Interface 2):
1259 	 * 1: 8 Analog + 2 S/PDIF + 8 ADAT
1260 	 * 2: 8 Analog + 2 S/PDIF + 4 ADAT
1261 	 * 3: 8 Analog
1262 	 */
1263 
1264 	/*
1265 	 * I'll leave 2 as the default one and
1266 	 * use device_setup to switch to the
1267 	 * other two.
1268 	 */
1269 	if ((chip->setup == 0 || chip->setup > 2) && altno != 2)
1270 		return 1;
1271 	else if (chip->setup == 1 && altno != 1)
1272 		return 1;
1273 	else if (chip->setup == 2 && altno != 3)
1274 		return 1;
1275 
1276 	return 0;
1277 }
1278 
1279 int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
1280 				  int iface,
1281 				  int altno)
1282 {
1283 	/* audiophile usb: skip altsets incompatible with device_setup */
1284 	if (chip->usb_id == USB_ID(0x0763, 0x2003))
1285 		return audiophile_skip_setting_quirk(chip, iface, altno);
1286 	/* quattro usb: skip altsets incompatible with device_setup */
1287 	if (chip->usb_id == USB_ID(0x0763, 0x2001))
1288 		return quattro_skip_setting_quirk(chip, iface, altno);
1289 	/* fasttrackpro usb: skip altsets incompatible with device_setup */
1290 	if (chip->usb_id == USB_ID(0x0763, 0x2012))
1291 		return fasttrackpro_skip_setting_quirk(chip, iface, altno);
1292 	/* presonus studio 1810c: skip altsets incompatible with device_setup */
1293 	if (chip->usb_id == USB_ID(0x0194f, 0x010c))
1294 		return s1810c_skip_setting_quirk(chip, iface, altno);
1295 
1296 
1297 	return 0;
1298 }
1299 
1300 int snd_usb_apply_boot_quirk(struct usb_device *dev,
1301 			     struct usb_interface *intf,
1302 			     const struct snd_usb_audio_quirk *quirk,
1303 			     unsigned int id)
1304 {
1305 	switch (id) {
1306 	case USB_ID(0x041e, 0x3000):
1307 		/* SB Extigy needs special boot-up sequence */
1308 		/* if more models come, this will go to the quirk list. */
1309 		return snd_usb_extigy_boot_quirk(dev, intf);
1310 
1311 	case USB_ID(0x041e, 0x3020):
1312 		/* SB Audigy 2 NX needs its own boot-up magic, too */
1313 		return snd_usb_audigy2nx_boot_quirk(dev);
1314 
1315 	case USB_ID(0x10f5, 0x0200):
1316 		/* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
1317 		return snd_usb_cm106_boot_quirk(dev);
1318 
1319 	case USB_ID(0x0d8c, 0x0102):
1320 		/* C-Media CM6206 / CM106-Like Sound Device */
1321 	case USB_ID(0x0ccd, 0x00b1): /* Terratec Aureon 7.1 USB */
1322 		return snd_usb_cm6206_boot_quirk(dev);
1323 
1324 	case USB_ID(0x0dba, 0x3000):
1325 		/* Digidesign Mbox 2 */
1326 		return snd_usb_mbox2_boot_quirk(dev);
1327 
1328 	case USB_ID(0x1235, 0x0010): /* Focusrite Novation Saffire 6 USB */
1329 	case USB_ID(0x1235, 0x0018): /* Focusrite Novation Twitch */
1330 		return snd_usb_novation_boot_quirk(dev);
1331 
1332 	case USB_ID(0x133e, 0x0815):
1333 		/* Access Music VirusTI Desktop */
1334 		return snd_usb_accessmusic_boot_quirk(dev);
1335 
1336 	case USB_ID(0x17cc, 0x1000): /* Komplete Audio 6 */
1337 	case USB_ID(0x17cc, 0x1010): /* Traktor Audio 6 */
1338 	case USB_ID(0x17cc, 0x1020): /* Traktor Audio 10 */
1339 		return snd_usb_nativeinstruments_boot_quirk(dev);
1340 	case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
1341 		return snd_usb_fasttrackpro_boot_quirk(dev);
1342 	case USB_ID(0x047f, 0xc010): /* Plantronics Gamecom 780 */
1343 		return snd_usb_gamecon780_boot_quirk(dev);
1344 	case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx 3 */
1345 		return snd_usb_axefx3_boot_quirk(dev);
1346 	case USB_ID(0x07fd, 0x0004): /* MOTU MicroBook II */
1347 		/*
1348 		 * For some reason interface 3 with vendor-spec class is
1349 		 * detected on MicroBook IIc.
1350 		 */
1351 		if (get_iface_desc(intf->altsetting)->bInterfaceClass ==
1352 		    USB_CLASS_VENDOR_SPEC &&
1353 		    get_iface_desc(intf->altsetting)->bInterfaceNumber < 3)
1354 			return snd_usb_motu_microbookii_boot_quirk(dev);
1355 		break;
1356 	}
1357 
1358 	return 0;
1359 }
1360 
1361 int snd_usb_apply_boot_quirk_once(struct usb_device *dev,
1362 				  struct usb_interface *intf,
1363 				  const struct snd_usb_audio_quirk *quirk,
1364 				  unsigned int id)
1365 {
1366 	switch (id) {
1367 	case USB_ID(0x07fd, 0x0008): /* MOTU M Series */
1368 		return snd_usb_motu_m_series_boot_quirk(dev);
1369 	}
1370 
1371 	return 0;
1372 }
1373 
1374 /*
1375  * check if the device uses big-endian samples
1376  */
1377 int snd_usb_is_big_endian_format(struct snd_usb_audio *chip,
1378 				 const struct audioformat *fp)
1379 {
1380 	/* it depends on altsetting whether the device is big-endian or not */
1381 	switch (chip->usb_id) {
1382 	case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
1383 		if (fp->altsetting == 2 || fp->altsetting == 3 ||
1384 			fp->altsetting == 5 || fp->altsetting == 6)
1385 			return 1;
1386 		break;
1387 	case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
1388 		if (chip->setup == 0x00 ||
1389 			fp->altsetting == 1 || fp->altsetting == 2 ||
1390 			fp->altsetting == 3)
1391 			return 1;
1392 		break;
1393 	case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro */
1394 		if (fp->altsetting == 2 || fp->altsetting == 3 ||
1395 			fp->altsetting == 5 || fp->altsetting == 6)
1396 			return 1;
1397 		break;
1398 	}
1399 	return 0;
1400 }
1401 
1402 /*
1403  * For E-Mu 0404USB/0202USB/TrackerPre/0204 sample rate should be set for device,
1404  * not for interface.
1405  */
1406 
1407 enum {
1408 	EMU_QUIRK_SR_44100HZ = 0,
1409 	EMU_QUIRK_SR_48000HZ,
1410 	EMU_QUIRK_SR_88200HZ,
1411 	EMU_QUIRK_SR_96000HZ,
1412 	EMU_QUIRK_SR_176400HZ,
1413 	EMU_QUIRK_SR_192000HZ
1414 };
1415 
1416 static void set_format_emu_quirk(struct snd_usb_substream *subs,
1417 				 const struct audioformat *fmt)
1418 {
1419 	unsigned char emu_samplerate_id = 0;
1420 
1421 	/* When capture is active
1422 	 * sample rate shouldn't be changed
1423 	 * by playback substream
1424 	 */
1425 	if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
1426 		if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].cur_audiofmt)
1427 			return;
1428 	}
1429 
1430 	switch (fmt->rate_min) {
1431 	case 48000:
1432 		emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
1433 		break;
1434 	case 88200:
1435 		emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
1436 		break;
1437 	case 96000:
1438 		emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
1439 		break;
1440 	case 176400:
1441 		emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
1442 		break;
1443 	case 192000:
1444 		emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
1445 		break;
1446 	default:
1447 		emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
1448 		break;
1449 	}
1450 	snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
1451 	subs->pkt_offset_adj = (emu_samplerate_id >= EMU_QUIRK_SR_176400HZ) ? 4 : 0;
1452 }
1453 
1454 static int pioneer_djm_set_format_quirk(struct snd_usb_substream *subs,
1455 					u16 windex)
1456 {
1457 	unsigned int cur_rate = subs->data_endpoint->cur_rate;
1458 	u8 sr[3];
1459 	// Convert to little endian
1460 	sr[0] = cur_rate & 0xff;
1461 	sr[1] = (cur_rate >> 8) & 0xff;
1462 	sr[2] = (cur_rate >> 16) & 0xff;
1463 	usb_set_interface(subs->dev, 0, 1);
1464 	// we should derive windex from fmt-sync_ep but it's not set
1465 	snd_usb_ctl_msg(subs->stream->chip->dev,
1466 		usb_sndctrlpipe(subs->stream->chip->dev, 0),
1467 		0x01, 0x22, 0x0100, windex, &sr, 0x0003);
1468 	return 0;
1469 }
1470 
1471 void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
1472 			      const struct audioformat *fmt)
1473 {
1474 	switch (subs->stream->chip->usb_id) {
1475 	case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
1476 	case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
1477 	case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
1478 	case USB_ID(0x041e, 0x3f19): /* E-Mu 0204 USB */
1479 		set_format_emu_quirk(subs, fmt);
1480 		break;
1481 	case USB_ID(0x534d, 0x2109): /* MacroSilicon MS2109 */
1482 		subs->stream_offset_adj = 2;
1483 		break;
1484 	case USB_ID(0x2b73, 0x0013): /* Pioneer DJM-450 */
1485 		pioneer_djm_set_format_quirk(subs, 0x0082);
1486 		break;
1487 	case USB_ID(0x08e4, 0x017f): /* Pioneer DJM-750 */
1488 	case USB_ID(0x08e4, 0x0163): /* Pioneer DJM-850 */
1489 		pioneer_djm_set_format_quirk(subs, 0x0086);
1490 		break;
1491 	}
1492 }
1493 
1494 int snd_usb_select_mode_quirk(struct snd_usb_audio *chip,
1495 			      const struct audioformat *fmt)
1496 {
1497 	struct usb_device *dev = chip->dev;
1498 	int err;
1499 
1500 	if (chip->quirk_flags & QUIRK_FLAG_ITF_USB_DSD_DAC) {
1501 		/* First switch to alt set 0, otherwise the mode switch cmd
1502 		 * will not be accepted by the DAC
1503 		 */
1504 		err = usb_set_interface(dev, fmt->iface, 0);
1505 		if (err < 0)
1506 			return err;
1507 
1508 		msleep(20); /* Delay needed after setting the interface */
1509 
1510 		/* Vendor mode switch cmd is required. */
1511 		if (fmt->formats & SNDRV_PCM_FMTBIT_DSD_U32_BE) {
1512 			/* DSD mode (DSD_U32) requested */
1513 			err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
1514 					      USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
1515 					      1, 1, NULL, 0);
1516 			if (err < 0)
1517 				return err;
1518 
1519 		} else {
1520 			/* PCM or DOP mode (S32) requested */
1521 			/* PCM mode (S16) requested */
1522 			err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0,
1523 					      USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
1524 					      0, 1, NULL, 0);
1525 			if (err < 0)
1526 				return err;
1527 
1528 		}
1529 		msleep(20);
1530 	}
1531 	return 0;
1532 }
1533 
1534 void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep)
1535 {
1536 	/*
1537 	 * "Playback Design" products send bogus feedback data at the start
1538 	 * of the stream. Ignore them.
1539 	 */
1540 	if (USB_ID_VENDOR(ep->chip->usb_id) == 0x23ba &&
1541 	    ep->type == SND_USB_ENDPOINT_TYPE_SYNC)
1542 		ep->skip_packets = 4;
1543 
1544 	/*
1545 	 * M-Audio Fast Track C400/C600 - when packets are not skipped, real
1546 	 * world latency varies by approx. +/- 50 frames (at 96kHz) each time
1547 	 * the stream is (re)started. When skipping packets 16 at endpoint
1548 	 * start up, the real world latency is stable within +/- 1 frame (also
1549 	 * across power cycles).
1550 	 */
1551 	if ((ep->chip->usb_id == USB_ID(0x0763, 0x2030) ||
1552 	     ep->chip->usb_id == USB_ID(0x0763, 0x2031)) &&
1553 	    ep->type == SND_USB_ENDPOINT_TYPE_DATA)
1554 		ep->skip_packets = 16;
1555 
1556 	/* Work around devices that report unreasonable feedback data */
1557 	if ((ep->chip->usb_id == USB_ID(0x0644, 0x8038) ||  /* TEAC UD-H01 */
1558 	     ep->chip->usb_id == USB_ID(0x1852, 0x5034)) && /* T+A Dac8 */
1559 	    ep->syncmaxsize == 4)
1560 		ep->tenor_fb_quirk = 1;
1561 }
1562 
1563 /* quirk applied after snd_usb_ctl_msg(); not applied during boot quirks */
1564 void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
1565 			   __u8 request, __u8 requesttype, __u16 value,
1566 			   __u16 index, void *data, __u16 size)
1567 {
1568 	struct snd_usb_audio *chip = dev_get_drvdata(&dev->dev);
1569 
1570 	if (!chip || (requesttype & USB_TYPE_MASK) != USB_TYPE_CLASS)
1571 		return;
1572 
1573 	if (chip->quirk_flags & QUIRK_FLAG_CTL_MSG_DELAY)
1574 		msleep(20);
1575 	else if (chip->quirk_flags & QUIRK_FLAG_CTL_MSG_DELAY_1M)
1576 		usleep_range(1000, 2000);
1577 	else if (chip->quirk_flags & QUIRK_FLAG_CTL_MSG_DELAY_5M)
1578 		usleep_range(5000, 6000);
1579 }
1580 
1581 /*
1582  * snd_usb_interface_dsd_format_quirks() is called from format.c to
1583  * augment the PCM format bit-field for DSD types. The UAC standards
1584  * don't have a designated bit field to denote DSD-capable interfaces,
1585  * hence all hardware that is known to support this format has to be
1586  * listed here.
1587  */
1588 u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
1589 					struct audioformat *fp,
1590 					unsigned int sample_bytes)
1591 {
1592 	struct usb_interface *iface;
1593 
1594 	/* Playback Designs */
1595 	if (USB_ID_VENDOR(chip->usb_id) == 0x23ba &&
1596 	    USB_ID_PRODUCT(chip->usb_id) < 0x0110) {
1597 		switch (fp->altsetting) {
1598 		case 1:
1599 			fp->dsd_dop = true;
1600 			return SNDRV_PCM_FMTBIT_DSD_U16_LE;
1601 		case 2:
1602 			fp->dsd_bitrev = true;
1603 			return SNDRV_PCM_FMTBIT_DSD_U8;
1604 		case 3:
1605 			fp->dsd_bitrev = true;
1606 			return SNDRV_PCM_FMTBIT_DSD_U16_LE;
1607 		}
1608 	}
1609 
1610 	/* XMOS based USB DACs */
1611 	switch (chip->usb_id) {
1612 	case USB_ID(0x1511, 0x0037): /* AURALiC VEGA */
1613 	case USB_ID(0x2522, 0x0012): /* LH Labs VI DAC Infinity */
1614 	case USB_ID(0x2772, 0x0230): /* Pro-Ject Pre Box S2 Digital */
1615 		if (fp->altsetting == 2)
1616 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1617 		break;
1618 
1619 	case USB_ID(0x0d8c, 0x0316): /* Hegel HD12 DSD */
1620 	case USB_ID(0x10cb, 0x0103): /* The Bit Opus #3; with fp->dsd_raw */
1621 	case USB_ID(0x16d0, 0x06b2): /* NuPrime DAC-10 */
1622 	case USB_ID(0x16d0, 0x09dd): /* Encore mDSD */
1623 	case USB_ID(0x16d0, 0x0733): /* Furutech ADL Stratos */
1624 	case USB_ID(0x16d0, 0x09db): /* NuPrime Audio DAC-9 */
1625 	case USB_ID(0x1db5, 0x0003): /* Bryston BDA3 */
1626 	case USB_ID(0x22e1, 0xca01): /* HDTA Serenade DSD */
1627 	case USB_ID(0x249c, 0x9326): /* M2Tech Young MkIII */
1628 	case USB_ID(0x2616, 0x0106): /* PS Audio NuWave DAC */
1629 	case USB_ID(0x2622, 0x0041): /* Audiolab M-DAC+ */
1630 	case USB_ID(0x27f7, 0x3002): /* W4S DAC-2v2SE */
1631 	case USB_ID(0x29a2, 0x0086): /* Mutec MC3+ USB */
1632 	case USB_ID(0x6b42, 0x0042): /* MSB Technology */
1633 		if (fp->altsetting == 3)
1634 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1635 		break;
1636 
1637 	/* Amanero Combo384 USB based DACs with native DSD support */
1638 	case USB_ID(0x16d0, 0x071a):  /* Amanero - Combo384 */
1639 	case USB_ID(0x2ab6, 0x0004):  /* T+A DAC8DSD-V2.0, MP1000E-V2.0, MP2000R-V2.0, MP2500R-V2.0, MP3100HV-V2.0 */
1640 	case USB_ID(0x2ab6, 0x0005):  /* T+A USB HD Audio 1 */
1641 	case USB_ID(0x2ab6, 0x0006):  /* T+A USB HD Audio 2 */
1642 		if (fp->altsetting == 2) {
1643 			switch (le16_to_cpu(chip->dev->descriptor.bcdDevice)) {
1644 			case 0x199:
1645 				return SNDRV_PCM_FMTBIT_DSD_U32_LE;
1646 			case 0x19b:
1647 			case 0x203:
1648 				return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1649 			default:
1650 				break;
1651 			}
1652 		}
1653 		break;
1654 	case USB_ID(0x16d0, 0x0a23):
1655 		if (fp->altsetting == 2)
1656 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1657 		break;
1658 
1659 	default:
1660 		break;
1661 	}
1662 
1663 	/* ITF-USB DSD based DACs */
1664 	if (chip->quirk_flags & QUIRK_FLAG_ITF_USB_DSD_DAC) {
1665 		iface = usb_ifnum_to_if(chip->dev, fp->iface);
1666 
1667 		/* Altsetting 2 support native DSD if the num of altsets is
1668 		 * three (0-2),
1669 		 * Altsetting 3 support native DSD if the num of altsets is
1670 		 * four (0-3).
1671 		 */
1672 		if (fp->altsetting == iface->num_altsetting - 1)
1673 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1674 	}
1675 
1676 	/* Mostly generic method to detect many DSD-capable implementations */
1677 	if ((chip->quirk_flags & QUIRK_FLAG_DSD_RAW) && fp->dsd_raw)
1678 		return SNDRV_PCM_FMTBIT_DSD_U32_BE;
1679 
1680 	return 0;
1681 }
1682 
1683 void snd_usb_audioformat_attributes_quirk(struct snd_usb_audio *chip,
1684 					  struct audioformat *fp,
1685 					  int stream)
1686 {
1687 	switch (chip->usb_id) {
1688 	case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
1689 		/* Optoplay sets the sample rate attribute although
1690 		 * it seems not supporting it in fact.
1691 		 */
1692 		fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
1693 		break;
1694 	case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
1695 	case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
1696 		/* doesn't set the sample rate attribute, but supports it */
1697 		fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
1698 		break;
1699 	case USB_ID(0x0763, 0x2001):  /* M-Audio Quattro USB */
1700 	case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
1701 	case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
1702 	case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
1703 					an older model 77d:223) */
1704 	/*
1705 	 * plantronics headset and Griffin iMic have set adaptive-in
1706 	 * although it's really not...
1707 	 */
1708 		fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
1709 		if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1710 			fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
1711 		else
1712 			fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
1713 		break;
1714 	case USB_ID(0x07fd, 0x0004):  /* MOTU MicroBook IIc */
1715 		/*
1716 		 * MaxPacketsOnly attribute is erroneously set in endpoint
1717 		 * descriptors. As a result this card produces noise with
1718 		 * all sample rates other than 96 kHz.
1719 		 */
1720 		fp->attributes &= ~UAC_EP_CS_ATTR_FILL_MAX;
1721 		break;
1722 	case USB_ID(0x1224, 0x2a25):  /* Jieli Technology USB PHY 2.0 */
1723 		/* mic works only when ep packet size is set to wMaxPacketSize */
1724 		fp->attributes |= UAC_EP_CS_ATTR_FILL_MAX;
1725 		break;
1726 
1727 	}
1728 }
1729 
1730 /*
1731  * registration quirk:
1732  * the registration is skipped if a device matches with the given ID,
1733  * unless the interface reaches to the defined one.  This is for delaying
1734  * the registration until the last known interface, so that the card and
1735  * devices appear at the same time.
1736  */
1737 
1738 struct registration_quirk {
1739 	unsigned int usb_id;	/* composed via USB_ID() */
1740 	unsigned int interface;	/* the interface to trigger register */
1741 };
1742 
1743 #define REG_QUIRK_ENTRY(vendor, product, iface) \
1744 	{ .usb_id = USB_ID(vendor, product), .interface = (iface) }
1745 
1746 static const struct registration_quirk registration_quirks[] = {
1747 	REG_QUIRK_ENTRY(0x0951, 0x16d8, 2),	/* Kingston HyperX AMP */
1748 	REG_QUIRK_ENTRY(0x0951, 0x16ed, 2),	/* Kingston HyperX Cloud Alpha S */
1749 	REG_QUIRK_ENTRY(0x0951, 0x16ea, 2),	/* Kingston HyperX Cloud Flight S */
1750 	REG_QUIRK_ENTRY(0x0ecb, 0x1f46, 2),	/* JBL Quantum 600 */
1751 	REG_QUIRK_ENTRY(0x0ecb, 0x1f47, 2),	/* JBL Quantum 800 */
1752 	REG_QUIRK_ENTRY(0x0ecb, 0x1f4c, 2),	/* JBL Quantum 400 */
1753 	REG_QUIRK_ENTRY(0x0ecb, 0x2039, 2),	/* JBL Quantum 400 */
1754 	REG_QUIRK_ENTRY(0x0ecb, 0x203c, 2),	/* JBL Quantum 600 */
1755 	REG_QUIRK_ENTRY(0x0ecb, 0x203e, 2),	/* JBL Quantum 800 */
1756 	{ 0 }					/* terminator */
1757 };
1758 
1759 /* return true if skipping registration */
1760 bool snd_usb_registration_quirk(struct snd_usb_audio *chip, int iface)
1761 {
1762 	const struct registration_quirk *q;
1763 
1764 	for (q = registration_quirks; q->usb_id; q++)
1765 		if (chip->usb_id == q->usb_id)
1766 			return iface != q->interface;
1767 
1768 	/* Register as normal */
1769 	return false;
1770 }
1771 
1772 /*
1773  * driver behavior quirk flags
1774  */
1775 struct usb_audio_quirk_flags_table {
1776 	u32 id;
1777 	u32 flags;
1778 };
1779 
1780 #define DEVICE_FLG(vid, pid, _flags) \
1781 	{ .id = USB_ID(vid, pid), .flags = (_flags) }
1782 #define VENDOR_FLG(vid, _flags) DEVICE_FLG(vid, 0, _flags)
1783 
1784 static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
1785 	/* Device matches */
1786 	DEVICE_FLG(0x041e, 0x3000, /* Creative SB Extigy */
1787 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
1788 	DEVICE_FLG(0x041e, 0x4080, /* Creative Live Cam VF0610 */
1789 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1790 	DEVICE_FLG(0x046d, 0x084c, /* Logitech ConferenceCam Connect */
1791 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY_1M),
1792 	DEVICE_FLG(0x046d, 0x0991, /* Logitech QuickCam Pro */
1793 		   QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_IGNORE_CTL_ERROR),
1794 	DEVICE_FLG(0x046d, 0x09a4, /* Logitech QuickCam E 3500 */
1795 		   QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_IGNORE_CTL_ERROR),
1796 	DEVICE_FLG(0x04d8, 0xfeea, /* Benchmark DAC1 Pre */
1797 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1798 	DEVICE_FLG(0x04e8, 0xa051, /* Samsung USBC Headset (AKG) */
1799 		   QUIRK_FLAG_SKIP_CLOCK_SELECTOR | QUIRK_FLAG_CTL_MSG_DELAY_5M),
1800 	DEVICE_FLG(0x054c, 0x0b8c, /* Sony WALKMAN NW-A45 DAC */
1801 		   QUIRK_FLAG_SET_IFACE_FIRST),
1802 	DEVICE_FLG(0x0556, 0x0014, /* Phoenix Audio TMX320VC */
1803 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1804 	DEVICE_FLG(0x05a3, 0x9420, /* ELP HD USB Camera */
1805 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1806 	DEVICE_FLG(0x05a7, 0x1020, /* Bose Companion 5 */
1807 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1808 	DEVICE_FLG(0x05e1, 0x0408, /* Syntek STK1160 */
1809 		   QUIRK_FLAG_ALIGN_TRANSFER),
1810 	DEVICE_FLG(0x05e1, 0x0480, /* Hauppauge Woodbury */
1811 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1812 	DEVICE_FLG(0x0644, 0x8043, /* TEAC UD-501/UD-501V2/UD-503/NT-503 */
1813 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
1814 		   QUIRK_FLAG_IFACE_DELAY),
1815 	DEVICE_FLG(0x0644, 0x8044, /* Esoteric D-05X */
1816 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
1817 		   QUIRK_FLAG_IFACE_DELAY),
1818 	DEVICE_FLG(0x0644, 0x804a, /* TEAC UD-301 */
1819 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
1820 		   QUIRK_FLAG_IFACE_DELAY),
1821 	DEVICE_FLG(0x06f8, 0xb000, /* Hercules DJ Console (Windows Edition) */
1822 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
1823 	DEVICE_FLG(0x06f8, 0xd002, /* Hercules DJ Console (Macintosh Edition) */
1824 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
1825 	DEVICE_FLG(0x074d, 0x3553, /* Outlaw RR2150 (Micronas UAC3553B) */
1826 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1827 	DEVICE_FLG(0x08bb, 0x2702, /* LineX FM Transmitter */
1828 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
1829 	DEVICE_FLG(0x0951, 0x16ad, /* Kingston HyperX */
1830 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
1831 	DEVICE_FLG(0x0b0e, 0x0349, /* Jabra 550a */
1832 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
1833 	DEVICE_FLG(0x0fd9, 0x0008, /* Hauppauge HVR-950Q */
1834 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1835 	DEVICE_FLG(0x1395, 0x740a, /* Sennheiser DECT */
1836 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1837 	DEVICE_FLG(0x13e5, 0x0001, /* Serato Phono */
1838 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
1839 	DEVICE_FLG(0x154e, 0x1002, /* Denon DCD-1500RE */
1840 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
1841 	DEVICE_FLG(0x154e, 0x1003, /* Denon DA-300USB */
1842 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
1843 	DEVICE_FLG(0x154e, 0x3005, /* Marantz HD-DAC1 */
1844 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
1845 	DEVICE_FLG(0x154e, 0x3006, /* Marantz SA-14S1 */
1846 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
1847 	DEVICE_FLG(0x154e, 0x500e, /* Denon DN-X1600 */
1848 		   QUIRK_FLAG_IGNORE_CLOCK_SOURCE),
1849 	DEVICE_FLG(0x1686, 0x00dd, /* Zoom R16/24 */
1850 		   QUIRK_FLAG_TX_LENGTH | QUIRK_FLAG_CTL_MSG_DELAY_1M),
1851 	DEVICE_FLG(0x17aa, 0x1046, /* Lenovo ThinkStation P620 Rear Line-in, Line-out and Microphone */
1852 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
1853 	DEVICE_FLG(0x17aa, 0x104d, /* Lenovo ThinkStation P620 Internal Speaker + Front Headset */
1854 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
1855 	DEVICE_FLG(0x1852, 0x5065, /* Luxman DA-06 */
1856 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
1857 	DEVICE_FLG(0x1901, 0x0191, /* GE B850V3 CP2114 audio interface */
1858 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1859 	DEVICE_FLG(0x2040, 0x7200, /* Hauppauge HVR-950Q */
1860 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1861 	DEVICE_FLG(0x2040, 0x7201, /* Hauppauge HVR-950Q-MXL */
1862 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1863 	DEVICE_FLG(0x2040, 0x7210, /* Hauppauge HVR-950Q */
1864 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1865 	DEVICE_FLG(0x2040, 0x7211, /* Hauppauge HVR-950Q-MXL */
1866 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1867 	DEVICE_FLG(0x2040, 0x7213, /* Hauppauge HVR-950Q */
1868 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1869 	DEVICE_FLG(0x2040, 0x7217, /* Hauppauge HVR-950Q */
1870 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1871 	DEVICE_FLG(0x2040, 0x721b, /* Hauppauge HVR-950Q */
1872 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1873 	DEVICE_FLG(0x2040, 0x721e, /* Hauppauge HVR-950Q */
1874 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1875 	DEVICE_FLG(0x2040, 0x721f, /* Hauppauge HVR-950Q */
1876 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1877 	DEVICE_FLG(0x2040, 0x7240, /* Hauppauge HVR-850 */
1878 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1879 	DEVICE_FLG(0x2040, 0x7260, /* Hauppauge HVR-950Q */
1880 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1881 	DEVICE_FLG(0x2040, 0x7270, /* Hauppauge HVR-950Q */
1882 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1883 	DEVICE_FLG(0x2040, 0x7280, /* Hauppauge HVR-950Q */
1884 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1885 	DEVICE_FLG(0x2040, 0x7281, /* Hauppauge HVR-950Q-MXL */
1886 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1887 	DEVICE_FLG(0x2040, 0x8200, /* Hauppauge Woodbury */
1888 		   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
1889 	DEVICE_FLG(0x21b4, 0x0081, /* AudioQuest DragonFly */
1890 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1891 	DEVICE_FLG(0x2708, 0x0002, /* Audient iD14 */
1892 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
1893 	DEVICE_FLG(0x2912, 0x30c8, /* Audioengine D1 */
1894 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1895 	DEVICE_FLG(0x30be, 0x0101, /* Schiit Hel */
1896 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
1897 	DEVICE_FLG(0x413c, 0xa506, /* Dell AE515 sound bar */
1898 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1899 	DEVICE_FLG(0x534d, 0x2109, /* MacroSilicon MS2109 */
1900 		   QUIRK_FLAG_ALIGN_TRANSFER),
1901 	DEVICE_FLG(0x1224, 0x2a25, /* Jieli Technology USB PHY 2.0 */
1902 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1903 
1904 	/* Vendor matches */
1905 	VENDOR_FLG(0x045e, /* MS Lifecam */
1906 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1907 	VENDOR_FLG(0x046d, /* Logitech */
1908 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
1909 	VENDOR_FLG(0x047f, /* Plantronics */
1910 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY),
1911 	VENDOR_FLG(0x0644, /* TEAC Corp. */
1912 		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY),
1913 	VENDOR_FLG(0x07fd, /* MOTU */
1914 		   QUIRK_FLAG_VALIDATE_RATES),
1915 	VENDOR_FLG(0x1235, /* Focusrite Novation */
1916 		   QUIRK_FLAG_VALIDATE_RATES),
1917 	VENDOR_FLG(0x152a, /* Thesycon devices */
1918 		   QUIRK_FLAG_DSD_RAW),
1919 	VENDOR_FLG(0x1de7, /* Phoenix Audio */
1920 		   QUIRK_FLAG_GET_SAMPLE_RATE),
1921 	VENDOR_FLG(0x20b1, /* XMOS based devices */
1922 		   QUIRK_FLAG_DSD_RAW),
1923 	VENDOR_FLG(0x22d9, /* Oppo */
1924 		   QUIRK_FLAG_DSD_RAW),
1925 	VENDOR_FLG(0x23ba, /* Playback Design */
1926 		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY |
1927 		   QUIRK_FLAG_DSD_RAW),
1928 	VENDOR_FLG(0x25ce, /* Mytek devices */
1929 		   QUIRK_FLAG_DSD_RAW),
1930 	VENDOR_FLG(0x278b, /* Rotel? */
1931 		   QUIRK_FLAG_DSD_RAW),
1932 	VENDOR_FLG(0x292b, /* Gustard/Ess based devices */
1933 		   QUIRK_FLAG_DSD_RAW),
1934 	VENDOR_FLG(0x2972, /* FiiO devices */
1935 		   QUIRK_FLAG_DSD_RAW),
1936 	VENDOR_FLG(0x2ab6, /* T+A devices */
1937 		   QUIRK_FLAG_DSD_RAW),
1938 	VENDOR_FLG(0x3353, /* Khadas devices */
1939 		   QUIRK_FLAG_DSD_RAW),
1940 	VENDOR_FLG(0x3842, /* EVGA */
1941 		   QUIRK_FLAG_DSD_RAW),
1942 	VENDOR_FLG(0xc502, /* HiBy devices */
1943 		   QUIRK_FLAG_DSD_RAW),
1944 
1945 	{} /* terminator */
1946 };
1947 
1948 void snd_usb_init_quirk_flags(struct snd_usb_audio *chip)
1949 {
1950 	const struct usb_audio_quirk_flags_table *p;
1951 
1952 	for (p = quirk_flags_table; p->id; p++) {
1953 		if (chip->usb_id == p->id ||
1954 		    (!USB_ID_PRODUCT(p->id) &&
1955 		     USB_ID_VENDOR(chip->usb_id) == USB_ID_VENDOR(p->id))) {
1956 			usb_audio_dbg(chip,
1957 				      "Set quirk_flags 0x%x for device %04x:%04x\n",
1958 				      p->flags, USB_ID_VENDOR(chip->usb_id),
1959 				      USB_ID_PRODUCT(chip->usb_id));
1960 			chip->quirk_flags |= p->flags;
1961 			return;
1962 		}
1963 	}
1964 }
1965