xref: /openbmc/linux/sound/usb/mixer_quirks.c (revision 82e6fdd6)
1 /*
2  *   USB Audio Driver for ALSA
3  *
4  *   Quirks and vendor-specific extensions for mixer interfaces
5  *
6  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7  *
8  *   Many codes borrowed from audio.c by
9  *	    Alan Cox (alan@lxorguk.ukuu.org.uk)
10  *	    Thomas Sailer (sailer@ife.ee.ethz.ch)
11  *
12  *   Audio Advantage Micro II support added by:
13  *	    Przemek Rudy (prudy1@o2.pl)
14  *
15  *   This program is free software; you can redistribute it and/or modify
16  *   it under the terms of the GNU General Public License as published by
17  *   the Free Software Foundation; either version 2 of the License, or
18  *   (at your option) any later version.
19  *
20  *   This program is distributed in the hope that it will be useful,
21  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
22  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23  *   GNU General Public License for more details.
24  *
25  *   You should have received a copy of the GNU General Public License
26  *   along with this program; if not, write to the Free Software
27  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
28  */
29 
30 #include <linux/hid.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/usb.h>
34 #include <linux/usb/audio.h>
35 
36 #include <sound/asoundef.h>
37 #include <sound/core.h>
38 #include <sound/control.h>
39 #include <sound/hwdep.h>
40 #include <sound/info.h>
41 #include <sound/tlv.h>
42 
43 #include "usbaudio.h"
44 #include "mixer.h"
45 #include "mixer_quirks.h"
46 #include "mixer_scarlett.h"
47 #include "mixer_us16x08.h"
48 #include "helper.h"
49 
50 extern struct snd_kcontrol_new *snd_usb_feature_unit_ctl;
51 
52 struct std_mono_table {
53 	unsigned int unitid, control, cmask;
54 	int val_type;
55 	const char *name;
56 	snd_kcontrol_tlv_rw_t *tlv_callback;
57 };
58 
59 /* This function allows for the creation of standard UAC controls.
60  * See the quirks for M-Audio FTUs or Ebox-44.
61  * If you don't want to set a TLV callback pass NULL.
62  *
63  * Since there doesn't seem to be a devices that needs a multichannel
64  * version, we keep it mono for simplicity.
65  */
66 static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
67 				unsigned int unitid,
68 				unsigned int control,
69 				unsigned int cmask,
70 				int val_type,
71 				unsigned int idx_off,
72 				const char *name,
73 				snd_kcontrol_tlv_rw_t *tlv_callback)
74 {
75 	struct usb_mixer_elem_info *cval;
76 	struct snd_kcontrol *kctl;
77 
78 	cval = kzalloc(sizeof(*cval), GFP_KERNEL);
79 	if (!cval)
80 		return -ENOMEM;
81 
82 	snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid);
83 	cval->val_type = val_type;
84 	cval->channels = 1;
85 	cval->control = control;
86 	cval->cmask = cmask;
87 	cval->idx_off = idx_off;
88 
89 	/* get_min_max() is called only for integer volumes later,
90 	 * so provide a short-cut for booleans */
91 	cval->min = 0;
92 	cval->max = 1;
93 	cval->res = 0;
94 	cval->dBmin = 0;
95 	cval->dBmax = 0;
96 
97 	/* Create control */
98 	kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
99 	if (!kctl) {
100 		kfree(cval);
101 		return -ENOMEM;
102 	}
103 
104 	/* Set name */
105 	snprintf(kctl->id.name, sizeof(kctl->id.name), name);
106 	kctl->private_free = snd_usb_mixer_elem_free;
107 
108 	/* set TLV */
109 	if (tlv_callback) {
110 		kctl->tlv.c = tlv_callback;
111 		kctl->vd[0].access |=
112 			SNDRV_CTL_ELEM_ACCESS_TLV_READ |
113 			SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
114 	}
115 	/* Add control to mixer */
116 	return snd_usb_mixer_add_control(&cval->head, kctl);
117 }
118 
119 static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
120 				unsigned int unitid,
121 				unsigned int control,
122 				unsigned int cmask,
123 				int val_type,
124 				const char *name,
125 				snd_kcontrol_tlv_rw_t *tlv_callback)
126 {
127 	return snd_create_std_mono_ctl_offset(mixer, unitid, control, cmask,
128 		val_type, 0 /* Offset */, name, tlv_callback);
129 }
130 
131 /*
132  * Create a set of standard UAC controls from a table
133  */
134 static int snd_create_std_mono_table(struct usb_mixer_interface *mixer,
135 				struct std_mono_table *t)
136 {
137 	int err;
138 
139 	while (t->name != NULL) {
140 		err = snd_create_std_mono_ctl(mixer, t->unitid, t->control,
141 				t->cmask, t->val_type, t->name, t->tlv_callback);
142 		if (err < 0)
143 			return err;
144 		t++;
145 	}
146 
147 	return 0;
148 }
149 
150 static int add_single_ctl_with_resume(struct usb_mixer_interface *mixer,
151 				      int id,
152 				      usb_mixer_elem_resume_func_t resume,
153 				      const struct snd_kcontrol_new *knew,
154 				      struct usb_mixer_elem_list **listp)
155 {
156 	struct usb_mixer_elem_list *list;
157 	struct snd_kcontrol *kctl;
158 
159 	list = kzalloc(sizeof(*list), GFP_KERNEL);
160 	if (!list)
161 		return -ENOMEM;
162 	if (listp)
163 		*listp = list;
164 	list->mixer = mixer;
165 	list->id = id;
166 	list->resume = resume;
167 	kctl = snd_ctl_new1(knew, list);
168 	if (!kctl) {
169 		kfree(list);
170 		return -ENOMEM;
171 	}
172 	kctl->private_free = snd_usb_mixer_elem_free;
173 	return snd_usb_mixer_add_control(list, kctl);
174 }
175 
176 /*
177  * Sound Blaster remote control configuration
178  *
179  * format of remote control data:
180  * Extigy:       xx 00
181  * Audigy 2 NX:  06 80 xx 00 00 00
182  * Live! 24-bit: 06 80 xx yy 22 83
183  */
184 static const struct rc_config {
185 	u32 usb_id;
186 	u8  offset;
187 	u8  length;
188 	u8  packet_length;
189 	u8  min_packet_length; /* minimum accepted length of the URB result */
190 	u8  mute_mixer_id;
191 	u32 mute_code;
192 } rc_configs[] = {
193 	{ USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
194 	{ USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
195 	{ USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
196 	{ USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
197 	{ USB_ID(0x041e, 0x30df), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
198 	{ USB_ID(0x041e, 0x3237), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
199 	{ USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
200 };
201 
202 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
203 {
204 	struct usb_mixer_interface *mixer = urb->context;
205 	const struct rc_config *rc = mixer->rc_cfg;
206 	u32 code;
207 
208 	if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
209 		return;
210 
211 	code = mixer->rc_buffer[rc->offset];
212 	if (rc->length == 2)
213 		code |= mixer->rc_buffer[rc->offset + 1] << 8;
214 
215 	/* the Mute button actually changes the mixer control */
216 	if (code == rc->mute_code)
217 		snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
218 	mixer->rc_code = code;
219 	wmb();
220 	wake_up(&mixer->rc_waitq);
221 }
222 
223 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
224 				     long count, loff_t *offset)
225 {
226 	struct usb_mixer_interface *mixer = hw->private_data;
227 	int err;
228 	u32 rc_code;
229 
230 	if (count != 1 && count != 4)
231 		return -EINVAL;
232 	err = wait_event_interruptible(mixer->rc_waitq,
233 				       (rc_code = xchg(&mixer->rc_code, 0)) != 0);
234 	if (err == 0) {
235 		if (count == 1)
236 			err = put_user(rc_code, buf);
237 		else
238 			err = put_user(rc_code, (u32 __user *)buf);
239 	}
240 	return err < 0 ? err : count;
241 }
242 
243 static __poll_t snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
244 					    poll_table *wait)
245 {
246 	struct usb_mixer_interface *mixer = hw->private_data;
247 
248 	poll_wait(file, &mixer->rc_waitq, wait);
249 	return mixer->rc_code ? EPOLLIN | EPOLLRDNORM : 0;
250 }
251 
252 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
253 {
254 	struct snd_hwdep *hwdep;
255 	int err, len, i;
256 
257 	for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
258 		if (rc_configs[i].usb_id == mixer->chip->usb_id)
259 			break;
260 	if (i >= ARRAY_SIZE(rc_configs))
261 		return 0;
262 	mixer->rc_cfg = &rc_configs[i];
263 
264 	len = mixer->rc_cfg->packet_length;
265 
266 	init_waitqueue_head(&mixer->rc_waitq);
267 	err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
268 	if (err < 0)
269 		return err;
270 	snprintf(hwdep->name, sizeof(hwdep->name),
271 		 "%s remote control", mixer->chip->card->shortname);
272 	hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
273 	hwdep->private_data = mixer;
274 	hwdep->ops.read = snd_usb_sbrc_hwdep_read;
275 	hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
276 	hwdep->exclusive = 1;
277 
278 	mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
279 	if (!mixer->rc_urb)
280 		return -ENOMEM;
281 	mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
282 	if (!mixer->rc_setup_packet) {
283 		usb_free_urb(mixer->rc_urb);
284 		mixer->rc_urb = NULL;
285 		return -ENOMEM;
286 	}
287 	mixer->rc_setup_packet->bRequestType =
288 		USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
289 	mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
290 	mixer->rc_setup_packet->wValue = cpu_to_le16(0);
291 	mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
292 	mixer->rc_setup_packet->wLength = cpu_to_le16(len);
293 	usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
294 			     usb_rcvctrlpipe(mixer->chip->dev, 0),
295 			     (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
296 			     snd_usb_soundblaster_remote_complete, mixer);
297 	return 0;
298 }
299 
300 #define snd_audigy2nx_led_info		snd_ctl_boolean_mono_info
301 
302 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
303 {
304 	ucontrol->value.integer.value[0] = kcontrol->private_value >> 8;
305 	return 0;
306 }
307 
308 static int snd_audigy2nx_led_update(struct usb_mixer_interface *mixer,
309 				    int value, int index)
310 {
311 	struct snd_usb_audio *chip = mixer->chip;
312 	int err;
313 
314 	err = snd_usb_lock_shutdown(chip);
315 	if (err < 0)
316 		return err;
317 
318 	if (chip->usb_id == USB_ID(0x041e, 0x3042))
319 		err = snd_usb_ctl_msg(chip->dev,
320 			      usb_sndctrlpipe(chip->dev, 0), 0x24,
321 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
322 			      !value, 0, NULL, 0);
323 	/* USB X-Fi S51 Pro */
324 	if (chip->usb_id == USB_ID(0x041e, 0x30df))
325 		err = snd_usb_ctl_msg(chip->dev,
326 			      usb_sndctrlpipe(chip->dev, 0), 0x24,
327 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
328 			      !value, 0, NULL, 0);
329 	else
330 		err = snd_usb_ctl_msg(chip->dev,
331 			      usb_sndctrlpipe(chip->dev, 0), 0x24,
332 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
333 			      value, index + 2, NULL, 0);
334 	snd_usb_unlock_shutdown(chip);
335 	return err;
336 }
337 
338 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol,
339 				 struct snd_ctl_elem_value *ucontrol)
340 {
341 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
342 	struct usb_mixer_interface *mixer = list->mixer;
343 	int index = kcontrol->private_value & 0xff;
344 	unsigned int value = ucontrol->value.integer.value[0];
345 	int old_value = kcontrol->private_value >> 8;
346 	int err;
347 
348 	if (value > 1)
349 		return -EINVAL;
350 	if (value == old_value)
351 		return 0;
352 	kcontrol->private_value = (value << 8) | index;
353 	err = snd_audigy2nx_led_update(mixer, value, index);
354 	return err < 0 ? err : 1;
355 }
356 
357 static int snd_audigy2nx_led_resume(struct usb_mixer_elem_list *list)
358 {
359 	int priv_value = list->kctl->private_value;
360 
361 	return snd_audigy2nx_led_update(list->mixer, priv_value >> 8,
362 					priv_value & 0xff);
363 }
364 
365 /* name and private_value are set dynamically */
366 static const struct snd_kcontrol_new snd_audigy2nx_control = {
367 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
368 	.info = snd_audigy2nx_led_info,
369 	.get = snd_audigy2nx_led_get,
370 	.put = snd_audigy2nx_led_put,
371 };
372 
373 static const char * const snd_audigy2nx_led_names[] = {
374 	"CMSS LED Switch",
375 	"Power LED Switch",
376 	"Dolby Digital LED Switch",
377 };
378 
379 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
380 {
381 	int i, err;
382 
383 	for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_led_names); ++i) {
384 		struct snd_kcontrol_new knew;
385 
386 		/* USB X-Fi S51 doesn't have a CMSS LED */
387 		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
388 			continue;
389 		/* USB X-Fi S51 Pro doesn't have one either */
390 		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x30df)) && i == 0)
391 			continue;
392 		if (i > 1 && /* Live24ext has 2 LEDs only */
393 			(mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
394 			 mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
395 			 mixer->chip->usb_id == USB_ID(0x041e, 0x30df) ||
396 			 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
397 			break;
398 
399 		knew = snd_audigy2nx_control;
400 		knew.name = snd_audigy2nx_led_names[i];
401 		knew.private_value = (1 << 8) | i; /* LED on as default */
402 		err = add_single_ctl_with_resume(mixer, 0,
403 						 snd_audigy2nx_led_resume,
404 						 &knew, NULL);
405 		if (err < 0)
406 			return err;
407 	}
408 	return 0;
409 }
410 
411 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
412 				    struct snd_info_buffer *buffer)
413 {
414 	static const struct sb_jack {
415 		int unitid;
416 		const char *name;
417 	}  jacks_audigy2nx[] = {
418 		{4,  "dig in "},
419 		{7,  "line in"},
420 		{19, "spk out"},
421 		{20, "hph out"},
422 		{-1, NULL}
423 	}, jacks_live24ext[] = {
424 		{4,  "line in"}, /* &1=Line, &2=Mic*/
425 		{3,  "hph out"}, /* headphones */
426 		{0,  "RC     "}, /* last command, 6 bytes see rc_config above */
427 		{-1, NULL}
428 	};
429 	const struct sb_jack *jacks;
430 	struct usb_mixer_interface *mixer = entry->private_data;
431 	int i, err;
432 	u8 buf[3];
433 
434 	snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
435 	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
436 		jacks = jacks_audigy2nx;
437 	else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
438 		 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
439 		jacks = jacks_live24ext;
440 	else
441 		return;
442 
443 	for (i = 0; jacks[i].name; ++i) {
444 		snd_iprintf(buffer, "%s: ", jacks[i].name);
445 		err = snd_usb_lock_shutdown(mixer->chip);
446 		if (err < 0)
447 			return;
448 		err = snd_usb_ctl_msg(mixer->chip->dev,
449 				      usb_rcvctrlpipe(mixer->chip->dev, 0),
450 				      UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
451 				      USB_RECIP_INTERFACE, 0,
452 				      jacks[i].unitid << 8, buf, 3);
453 		snd_usb_unlock_shutdown(mixer->chip);
454 		if (err == 3 && (buf[0] == 3 || buf[0] == 6))
455 			snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
456 		else
457 			snd_iprintf(buffer, "?\n");
458 	}
459 }
460 
461 /* EMU0204 */
462 static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol,
463 				      struct snd_ctl_elem_info *uinfo)
464 {
465 	static const char * const texts[2] = {"1/2", "3/4"};
466 
467 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
468 }
469 
470 static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
471 				     struct snd_ctl_elem_value *ucontrol)
472 {
473 	ucontrol->value.enumerated.item[0] = kcontrol->private_value;
474 	return 0;
475 }
476 
477 static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
478 					int value)
479 {
480 	struct snd_usb_audio *chip = mixer->chip;
481 	int err;
482 	unsigned char buf[2];
483 
484 	err = snd_usb_lock_shutdown(chip);
485 	if (err < 0)
486 		return err;
487 
488 	buf[0] = 0x01;
489 	buf[1] = value ? 0x02 : 0x01;
490 	err = snd_usb_ctl_msg(chip->dev,
491 		      usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
492 		      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
493 		      0x0400, 0x0e00, buf, 2);
494 	snd_usb_unlock_shutdown(chip);
495 	return err;
496 }
497 
498 static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
499 				     struct snd_ctl_elem_value *ucontrol)
500 {
501 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
502 	struct usb_mixer_interface *mixer = list->mixer;
503 	unsigned int value = ucontrol->value.enumerated.item[0];
504 	int err;
505 
506 	if (value > 1)
507 		return -EINVAL;
508 
509 	if (value == kcontrol->private_value)
510 		return 0;
511 
512 	kcontrol->private_value = value;
513 	err = snd_emu0204_ch_switch_update(mixer, value);
514 	return err < 0 ? err : 1;
515 }
516 
517 static int snd_emu0204_ch_switch_resume(struct usb_mixer_elem_list *list)
518 {
519 	return snd_emu0204_ch_switch_update(list->mixer,
520 					    list->kctl->private_value);
521 }
522 
523 static struct snd_kcontrol_new snd_emu0204_control = {
524 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
525 	.name = "Front Jack Channels",
526 	.info = snd_emu0204_ch_switch_info,
527 	.get = snd_emu0204_ch_switch_get,
528 	.put = snd_emu0204_ch_switch_put,
529 	.private_value = 0,
530 };
531 
532 static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
533 {
534 	return add_single_ctl_with_resume(mixer, 0,
535 					  snd_emu0204_ch_switch_resume,
536 					  &snd_emu0204_control, NULL);
537 }
538 
539 /* ASUS Xonar U1 / U3 controls */
540 
541 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
542 				   struct snd_ctl_elem_value *ucontrol)
543 {
544 	ucontrol->value.integer.value[0] = !!(kcontrol->private_value & 0x02);
545 	return 0;
546 }
547 
548 static int snd_xonar_u1_switch_update(struct usb_mixer_interface *mixer,
549 				      unsigned char status)
550 {
551 	struct snd_usb_audio *chip = mixer->chip;
552 	int err;
553 
554 	err = snd_usb_lock_shutdown(chip);
555 	if (err < 0)
556 		return err;
557 	err = snd_usb_ctl_msg(chip->dev,
558 			      usb_sndctrlpipe(chip->dev, 0), 0x08,
559 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
560 			      50, 0, &status, 1);
561 	snd_usb_unlock_shutdown(chip);
562 	return err;
563 }
564 
565 static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
566 				   struct snd_ctl_elem_value *ucontrol)
567 {
568 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
569 	u8 old_status, new_status;
570 	int err;
571 
572 	old_status = kcontrol->private_value;
573 	if (ucontrol->value.integer.value[0])
574 		new_status = old_status | 0x02;
575 	else
576 		new_status = old_status & ~0x02;
577 	if (new_status == old_status)
578 		return 0;
579 
580 	kcontrol->private_value = new_status;
581 	err = snd_xonar_u1_switch_update(list->mixer, new_status);
582 	return err < 0 ? err : 1;
583 }
584 
585 static int snd_xonar_u1_switch_resume(struct usb_mixer_elem_list *list)
586 {
587 	return snd_xonar_u1_switch_update(list->mixer,
588 					  list->kctl->private_value);
589 }
590 
591 static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
592 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
593 	.name = "Digital Playback Switch",
594 	.info = snd_ctl_boolean_mono_info,
595 	.get = snd_xonar_u1_switch_get,
596 	.put = snd_xonar_u1_switch_put,
597 	.private_value = 0x05,
598 };
599 
600 static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
601 {
602 	return add_single_ctl_with_resume(mixer, 0,
603 					  snd_xonar_u1_switch_resume,
604 					  &snd_xonar_u1_output_switch, NULL);
605 }
606 
607 /* Digidesign Mbox 1 clock source switch (internal/spdif) */
608 
609 static int snd_mbox1_switch_get(struct snd_kcontrol *kctl,
610 				struct snd_ctl_elem_value *ucontrol)
611 {
612 	ucontrol->value.enumerated.item[0] = kctl->private_value;
613 	return 0;
614 }
615 
616 static int snd_mbox1_switch_update(struct usb_mixer_interface *mixer, int val)
617 {
618 	struct snd_usb_audio *chip = mixer->chip;
619 	int err;
620 	unsigned char buff[3];
621 
622 	err = snd_usb_lock_shutdown(chip);
623 	if (err < 0)
624 		return err;
625 
626 	/* Prepare for magic command to toggle clock source */
627 	err = snd_usb_ctl_msg(chip->dev,
628 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
629 				USB_DIR_IN |
630 				USB_TYPE_CLASS |
631 				USB_RECIP_INTERFACE, 0x00, 0x500, buff, 1);
632 	if (err < 0)
633 		goto err;
634 	err = snd_usb_ctl_msg(chip->dev,
635 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
636 				USB_DIR_IN |
637 				USB_TYPE_CLASS |
638 				USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
639 	if (err < 0)
640 		goto err;
641 
642 	/* 2 possibilities:	Internal    -> send sample rate
643 	 *			S/PDIF sync -> send zeroes
644 	 * NB: Sample rate locked to 48kHz on purpose to
645 	 *     prevent user from resetting the sample rate
646 	 *     while S/PDIF sync is enabled and confusing
647 	 *     this configuration.
648 	 */
649 	if (val == 0) {
650 		buff[0] = 0x80;
651 		buff[1] = 0xbb;
652 		buff[2] = 0x00;
653 	} else {
654 		buff[0] = buff[1] = buff[2] = 0x00;
655 	}
656 
657 	/* Send the magic command to toggle the clock source */
658 	err = snd_usb_ctl_msg(chip->dev,
659 				usb_sndctrlpipe(chip->dev, 0), 0x1,
660 				USB_TYPE_CLASS |
661 				USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
662 	if (err < 0)
663 		goto err;
664 	err = snd_usb_ctl_msg(chip->dev,
665 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
666 				USB_DIR_IN |
667 				USB_TYPE_CLASS |
668 				USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
669 	if (err < 0)
670 		goto err;
671 	err = snd_usb_ctl_msg(chip->dev,
672 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
673 				USB_DIR_IN |
674 				USB_TYPE_CLASS |
675 				USB_RECIP_ENDPOINT, 0x100, 0x2, buff, 3);
676 	if (err < 0)
677 		goto err;
678 
679 err:
680 	snd_usb_unlock_shutdown(chip);
681 	return err;
682 }
683 
684 static int snd_mbox1_switch_put(struct snd_kcontrol *kctl,
685 				struct snd_ctl_elem_value *ucontrol)
686 {
687 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
688 	struct usb_mixer_interface *mixer = list->mixer;
689 	int err;
690 	bool cur_val, new_val;
691 
692 	cur_val = kctl->private_value;
693 	new_val = ucontrol->value.enumerated.item[0];
694 	if (cur_val == new_val)
695 		return 0;
696 
697 	kctl->private_value = new_val;
698 	err = snd_mbox1_switch_update(mixer, new_val);
699 	return err < 0 ? err : 1;
700 }
701 
702 static int snd_mbox1_switch_info(struct snd_kcontrol *kcontrol,
703 				 struct snd_ctl_elem_info *uinfo)
704 {
705 	static const char *const texts[2] = {
706 		"Internal",
707 		"S/PDIF"
708 	};
709 
710 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
711 }
712 
713 static int snd_mbox1_switch_resume(struct usb_mixer_elem_list *list)
714 {
715 	return snd_mbox1_switch_update(list->mixer, list->kctl->private_value);
716 }
717 
718 static struct snd_kcontrol_new snd_mbox1_switch = {
719 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
720 	.name = "Clock Source",
721 	.index = 0,
722 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
723 	.info = snd_mbox1_switch_info,
724 	.get = snd_mbox1_switch_get,
725 	.put = snd_mbox1_switch_put,
726 	.private_value = 0
727 };
728 
729 static int snd_mbox1_create_sync_switch(struct usb_mixer_interface *mixer)
730 {
731 	return add_single_ctl_with_resume(mixer, 0,
732 					  snd_mbox1_switch_resume,
733 					  &snd_mbox1_switch, NULL);
734 }
735 
736 /* Native Instruments device quirks */
737 
738 #define _MAKE_NI_CONTROL(bRequest,wIndex) ((bRequest) << 16 | (wIndex))
739 
740 static int snd_ni_control_init_val(struct usb_mixer_interface *mixer,
741 				   struct snd_kcontrol *kctl)
742 {
743 	struct usb_device *dev = mixer->chip->dev;
744 	unsigned int pval = kctl->private_value;
745 	u8 value;
746 	int err;
747 
748 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
749 			      (pval >> 16) & 0xff,
750 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
751 			      0, pval & 0xffff, &value, 1);
752 	if (err < 0) {
753 		dev_err(&dev->dev,
754 			"unable to issue vendor read request (ret = %d)", err);
755 		return err;
756 	}
757 
758 	kctl->private_value |= (value << 24);
759 	return 0;
760 }
761 
762 static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
763 					     struct snd_ctl_elem_value *ucontrol)
764 {
765 	ucontrol->value.integer.value[0] = kcontrol->private_value >> 24;
766 	return 0;
767 }
768 
769 static int snd_ni_update_cur_val(struct usb_mixer_elem_list *list)
770 {
771 	struct snd_usb_audio *chip = list->mixer->chip;
772 	unsigned int pval = list->kctl->private_value;
773 	int err;
774 
775 	err = snd_usb_lock_shutdown(chip);
776 	if (err < 0)
777 		return err;
778 	err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
779 			      (pval >> 16) & 0xff,
780 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
781 			      pval >> 24, pval & 0xffff, NULL, 0, 1000);
782 	snd_usb_unlock_shutdown(chip);
783 	return err;
784 }
785 
786 static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
787 					     struct snd_ctl_elem_value *ucontrol)
788 {
789 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
790 	u8 oldval = (kcontrol->private_value >> 24) & 0xff;
791 	u8 newval = ucontrol->value.integer.value[0];
792 	int err;
793 
794 	if (oldval == newval)
795 		return 0;
796 
797 	kcontrol->private_value &= ~(0xff << 24);
798 	kcontrol->private_value |= (unsigned int)newval << 24;
799 	err = snd_ni_update_cur_val(list);
800 	return err < 0 ? err : 1;
801 }
802 
803 static struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
804 	{
805 		.name = "Direct Thru Channel A",
806 		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
807 	},
808 	{
809 		.name = "Direct Thru Channel B",
810 		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
811 	},
812 	{
813 		.name = "Phono Input Channel A",
814 		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
815 	},
816 	{
817 		.name = "Phono Input Channel B",
818 		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
819 	},
820 };
821 
822 static struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
823 	{
824 		.name = "Direct Thru Channel A",
825 		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
826 	},
827 	{
828 		.name = "Direct Thru Channel B",
829 		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
830 	},
831 	{
832 		.name = "Direct Thru Channel C",
833 		.private_value = _MAKE_NI_CONTROL(0x01, 0x07),
834 	},
835 	{
836 		.name = "Direct Thru Channel D",
837 		.private_value = _MAKE_NI_CONTROL(0x01, 0x09),
838 	},
839 	{
840 		.name = "Phono Input Channel A",
841 		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
842 	},
843 	{
844 		.name = "Phono Input Channel B",
845 		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
846 	},
847 	{
848 		.name = "Phono Input Channel C",
849 		.private_value = _MAKE_NI_CONTROL(0x02, 0x07),
850 	},
851 	{
852 		.name = "Phono Input Channel D",
853 		.private_value = _MAKE_NI_CONTROL(0x02, 0x09),
854 	},
855 };
856 
857 static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
858 					      const struct snd_kcontrol_new *kc,
859 					      unsigned int count)
860 {
861 	int i, err = 0;
862 	struct snd_kcontrol_new template = {
863 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
864 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
865 		.get = snd_nativeinstruments_control_get,
866 		.put = snd_nativeinstruments_control_put,
867 		.info = snd_ctl_boolean_mono_info,
868 	};
869 
870 	for (i = 0; i < count; i++) {
871 		struct usb_mixer_elem_list *list;
872 
873 		template.name = kc[i].name;
874 		template.private_value = kc[i].private_value;
875 
876 		err = add_single_ctl_with_resume(mixer, 0,
877 						 snd_ni_update_cur_val,
878 						 &template, &list);
879 		if (err < 0)
880 			break;
881 		snd_ni_control_init_val(mixer, list->kctl);
882 	}
883 
884 	return err;
885 }
886 
887 /* M-Audio FastTrack Ultra quirks */
888 /* FTU Effect switch (also used by C400/C600) */
889 static int snd_ftu_eff_switch_info(struct snd_kcontrol *kcontrol,
890 					struct snd_ctl_elem_info *uinfo)
891 {
892 	static const char *const texts[8] = {
893 		"Room 1", "Room 2", "Room 3", "Hall 1",
894 		"Hall 2", "Plate", "Delay", "Echo"
895 	};
896 
897 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
898 }
899 
900 static int snd_ftu_eff_switch_init(struct usb_mixer_interface *mixer,
901 				   struct snd_kcontrol *kctl)
902 {
903 	struct usb_device *dev = mixer->chip->dev;
904 	unsigned int pval = kctl->private_value;
905 	int err;
906 	unsigned char value[2];
907 
908 	value[0] = 0x00;
909 	value[1] = 0x00;
910 
911 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
912 			      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
913 			      pval & 0xff00,
914 			      snd_usb_ctrl_intf(mixer->chip) | ((pval & 0xff) << 8),
915 			      value, 2);
916 	if (err < 0)
917 		return err;
918 
919 	kctl->private_value |= value[0] << 24;
920 	return 0;
921 }
922 
923 static int snd_ftu_eff_switch_get(struct snd_kcontrol *kctl,
924 					struct snd_ctl_elem_value *ucontrol)
925 {
926 	ucontrol->value.enumerated.item[0] = kctl->private_value >> 24;
927 	return 0;
928 }
929 
930 static int snd_ftu_eff_switch_update(struct usb_mixer_elem_list *list)
931 {
932 	struct snd_usb_audio *chip = list->mixer->chip;
933 	unsigned int pval = list->kctl->private_value;
934 	unsigned char value[2];
935 	int err;
936 
937 	value[0] = pval >> 24;
938 	value[1] = 0;
939 
940 	err = snd_usb_lock_shutdown(chip);
941 	if (err < 0)
942 		return err;
943 	err = snd_usb_ctl_msg(chip->dev,
944 			      usb_sndctrlpipe(chip->dev, 0),
945 			      UAC_SET_CUR,
946 			      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
947 			      pval & 0xff00,
948 			      snd_usb_ctrl_intf(chip) | ((pval & 0xff) << 8),
949 			      value, 2);
950 	snd_usb_unlock_shutdown(chip);
951 	return err;
952 }
953 
954 static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl,
955 					struct snd_ctl_elem_value *ucontrol)
956 {
957 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
958 	unsigned int pval = list->kctl->private_value;
959 	int cur_val, err, new_val;
960 
961 	cur_val = pval >> 24;
962 	new_val = ucontrol->value.enumerated.item[0];
963 	if (cur_val == new_val)
964 		return 0;
965 
966 	kctl->private_value &= ~(0xff << 24);
967 	kctl->private_value |= new_val << 24;
968 	err = snd_ftu_eff_switch_update(list);
969 	return err < 0 ? err : 1;
970 }
971 
972 static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
973 	int validx, int bUnitID)
974 {
975 	static struct snd_kcontrol_new template = {
976 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
977 		.name = "Effect Program Switch",
978 		.index = 0,
979 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
980 		.info = snd_ftu_eff_switch_info,
981 		.get = snd_ftu_eff_switch_get,
982 		.put = snd_ftu_eff_switch_put
983 	};
984 	struct usb_mixer_elem_list *list;
985 	int err;
986 
987 	err = add_single_ctl_with_resume(mixer, bUnitID,
988 					 snd_ftu_eff_switch_update,
989 					 &template, &list);
990 	if (err < 0)
991 		return err;
992 	list->kctl->private_value = (validx << 8) | bUnitID;
993 	snd_ftu_eff_switch_init(mixer, list->kctl);
994 	return 0;
995 }
996 
997 /* Create volume controls for FTU devices*/
998 static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
999 {
1000 	char name[64];
1001 	unsigned int control, cmask;
1002 	int in, out, err;
1003 
1004 	const unsigned int id = 5;
1005 	const int val_type = USB_MIXER_S16;
1006 
1007 	for (out = 0; out < 8; out++) {
1008 		control = out + 1;
1009 		for (in = 0; in < 8; in++) {
1010 			cmask = 1 << in;
1011 			snprintf(name, sizeof(name),
1012 				"AIn%d - Out%d Capture Volume",
1013 				in  + 1, out + 1);
1014 			err = snd_create_std_mono_ctl(mixer, id, control,
1015 							cmask, val_type, name,
1016 							&snd_usb_mixer_vol_tlv);
1017 			if (err < 0)
1018 				return err;
1019 		}
1020 		for (in = 8; in < 16; in++) {
1021 			cmask = 1 << in;
1022 			snprintf(name, sizeof(name),
1023 				"DIn%d - Out%d Playback Volume",
1024 				in - 7, out + 1);
1025 			err = snd_create_std_mono_ctl(mixer, id, control,
1026 							cmask, val_type, name,
1027 							&snd_usb_mixer_vol_tlv);
1028 			if (err < 0)
1029 				return err;
1030 		}
1031 	}
1032 
1033 	return 0;
1034 }
1035 
1036 /* This control needs a volume quirk, see mixer.c */
1037 static int snd_ftu_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1038 {
1039 	static const char name[] = "Effect Volume";
1040 	const unsigned int id = 6;
1041 	const int val_type = USB_MIXER_U8;
1042 	const unsigned int control = 2;
1043 	const unsigned int cmask = 0;
1044 
1045 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1046 					name, snd_usb_mixer_vol_tlv);
1047 }
1048 
1049 /* This control needs a volume quirk, see mixer.c */
1050 static int snd_ftu_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1051 {
1052 	static const char name[] = "Effect Duration";
1053 	const unsigned int id = 6;
1054 	const int val_type = USB_MIXER_S16;
1055 	const unsigned int control = 3;
1056 	const unsigned int cmask = 0;
1057 
1058 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1059 					name, snd_usb_mixer_vol_tlv);
1060 }
1061 
1062 /* This control needs a volume quirk, see mixer.c */
1063 static int snd_ftu_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1064 {
1065 	static const char name[] = "Effect Feedback Volume";
1066 	const unsigned int id = 6;
1067 	const int val_type = USB_MIXER_U8;
1068 	const unsigned int control = 4;
1069 	const unsigned int cmask = 0;
1070 
1071 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1072 					name, NULL);
1073 }
1074 
1075 static int snd_ftu_create_effect_return_ctls(struct usb_mixer_interface *mixer)
1076 {
1077 	unsigned int cmask;
1078 	int err, ch;
1079 	char name[48];
1080 
1081 	const unsigned int id = 7;
1082 	const int val_type = USB_MIXER_S16;
1083 	const unsigned int control = 7;
1084 
1085 	for (ch = 0; ch < 4; ++ch) {
1086 		cmask = 1 << ch;
1087 		snprintf(name, sizeof(name),
1088 			"Effect Return %d Volume", ch + 1);
1089 		err = snd_create_std_mono_ctl(mixer, id, control,
1090 						cmask, val_type, name,
1091 						snd_usb_mixer_vol_tlv);
1092 		if (err < 0)
1093 			return err;
1094 	}
1095 
1096 	return 0;
1097 }
1098 
1099 static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
1100 {
1101 	unsigned int  cmask;
1102 	int err, ch;
1103 	char name[48];
1104 
1105 	const unsigned int id = 5;
1106 	const int val_type = USB_MIXER_S16;
1107 	const unsigned int control = 9;
1108 
1109 	for (ch = 0; ch < 8; ++ch) {
1110 		cmask = 1 << ch;
1111 		snprintf(name, sizeof(name),
1112 			"Effect Send AIn%d Volume", ch + 1);
1113 		err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1114 						val_type, name,
1115 						snd_usb_mixer_vol_tlv);
1116 		if (err < 0)
1117 			return err;
1118 	}
1119 	for (ch = 8; ch < 16; ++ch) {
1120 		cmask = 1 << ch;
1121 		snprintf(name, sizeof(name),
1122 			"Effect Send DIn%d Volume", ch - 7);
1123 		err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1124 						val_type, name,
1125 						snd_usb_mixer_vol_tlv);
1126 		if (err < 0)
1127 			return err;
1128 	}
1129 	return 0;
1130 }
1131 
1132 static int snd_ftu_create_mixer(struct usb_mixer_interface *mixer)
1133 {
1134 	int err;
1135 
1136 	err = snd_ftu_create_volume_ctls(mixer);
1137 	if (err < 0)
1138 		return err;
1139 
1140 	err = snd_ftu_create_effect_switch(mixer, 1, 6);
1141 	if (err < 0)
1142 		return err;
1143 
1144 	err = snd_ftu_create_effect_volume_ctl(mixer);
1145 	if (err < 0)
1146 		return err;
1147 
1148 	err = snd_ftu_create_effect_duration_ctl(mixer);
1149 	if (err < 0)
1150 		return err;
1151 
1152 	err = snd_ftu_create_effect_feedback_ctl(mixer);
1153 	if (err < 0)
1154 		return err;
1155 
1156 	err = snd_ftu_create_effect_return_ctls(mixer);
1157 	if (err < 0)
1158 		return err;
1159 
1160 	err = snd_ftu_create_effect_send_ctls(mixer);
1161 	if (err < 0)
1162 		return err;
1163 
1164 	return 0;
1165 }
1166 
1167 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
1168 			       unsigned char samplerate_id)
1169 {
1170 	struct usb_mixer_interface *mixer;
1171 	struct usb_mixer_elem_info *cval;
1172 	int unitid = 12; /* SamleRate ExtensionUnit ID */
1173 
1174 	list_for_each_entry(mixer, &chip->mixer_list, list) {
1175 		cval = (struct usb_mixer_elem_info *)mixer->id_elems[unitid];
1176 		if (cval) {
1177 			snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
1178 						    cval->control << 8,
1179 						    samplerate_id);
1180 			snd_usb_mixer_notify_id(mixer, unitid);
1181 		}
1182 		break;
1183 	}
1184 }
1185 
1186 /* M-Audio Fast Track C400/C600 */
1187 /* C400/C600 volume controls, this control needs a volume quirk, see mixer.c */
1188 static int snd_c400_create_vol_ctls(struct usb_mixer_interface *mixer)
1189 {
1190 	char name[64];
1191 	unsigned int cmask, offset;
1192 	int out, chan, err;
1193 	int num_outs = 0;
1194 	int num_ins = 0;
1195 
1196 	const unsigned int id = 0x40;
1197 	const int val_type = USB_MIXER_S16;
1198 	const int control = 1;
1199 
1200 	switch (mixer->chip->usb_id) {
1201 	case USB_ID(0x0763, 0x2030):
1202 		num_outs = 6;
1203 		num_ins = 4;
1204 		break;
1205 	case USB_ID(0x0763, 0x2031):
1206 		num_outs = 8;
1207 		num_ins = 6;
1208 		break;
1209 	}
1210 
1211 	for (chan = 0; chan < num_outs + num_ins; chan++) {
1212 		for (out = 0; out < num_outs; out++) {
1213 			if (chan < num_outs) {
1214 				snprintf(name, sizeof(name),
1215 					"PCM%d-Out%d Playback Volume",
1216 					chan + 1, out + 1);
1217 			} else {
1218 				snprintf(name, sizeof(name),
1219 					"In%d-Out%d Playback Volume",
1220 					chan - num_outs + 1, out + 1);
1221 			}
1222 
1223 			cmask = (out == 0) ? 0 : 1 << (out - 1);
1224 			offset = chan * num_outs;
1225 			err = snd_create_std_mono_ctl_offset(mixer, id, control,
1226 						cmask, val_type, offset, name,
1227 						&snd_usb_mixer_vol_tlv);
1228 			if (err < 0)
1229 				return err;
1230 		}
1231 	}
1232 
1233 	return 0;
1234 }
1235 
1236 /* This control needs a volume quirk, see mixer.c */
1237 static int snd_c400_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1238 {
1239 	static const char name[] = "Effect Volume";
1240 	const unsigned int id = 0x43;
1241 	const int val_type = USB_MIXER_U8;
1242 	const unsigned int control = 3;
1243 	const unsigned int cmask = 0;
1244 
1245 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1246 					name, snd_usb_mixer_vol_tlv);
1247 }
1248 
1249 /* This control needs a volume quirk, see mixer.c */
1250 static int snd_c400_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1251 {
1252 	static const char name[] = "Effect Duration";
1253 	const unsigned int id = 0x43;
1254 	const int val_type = USB_MIXER_S16;
1255 	const unsigned int control = 4;
1256 	const unsigned int cmask = 0;
1257 
1258 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1259 					name, snd_usb_mixer_vol_tlv);
1260 }
1261 
1262 /* This control needs a volume quirk, see mixer.c */
1263 static int snd_c400_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1264 {
1265 	static const char name[] = "Effect Feedback Volume";
1266 	const unsigned int id = 0x43;
1267 	const int val_type = USB_MIXER_U8;
1268 	const unsigned int control = 5;
1269 	const unsigned int cmask = 0;
1270 
1271 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1272 					name, NULL);
1273 }
1274 
1275 static int snd_c400_create_effect_vol_ctls(struct usb_mixer_interface *mixer)
1276 {
1277 	char name[64];
1278 	unsigned int cmask;
1279 	int chan, err;
1280 	int num_outs = 0;
1281 	int num_ins = 0;
1282 
1283 	const unsigned int id = 0x42;
1284 	const int val_type = USB_MIXER_S16;
1285 	const int control = 1;
1286 
1287 	switch (mixer->chip->usb_id) {
1288 	case USB_ID(0x0763, 0x2030):
1289 		num_outs = 6;
1290 		num_ins = 4;
1291 		break;
1292 	case USB_ID(0x0763, 0x2031):
1293 		num_outs = 8;
1294 		num_ins = 6;
1295 		break;
1296 	}
1297 
1298 	for (chan = 0; chan < num_outs + num_ins; chan++) {
1299 		if (chan < num_outs) {
1300 			snprintf(name, sizeof(name),
1301 				"Effect Send DOut%d",
1302 				chan + 1);
1303 		} else {
1304 			snprintf(name, sizeof(name),
1305 				"Effect Send AIn%d",
1306 				chan - num_outs + 1);
1307 		}
1308 
1309 		cmask = (chan == 0) ? 0 : 1 << (chan - 1);
1310 		err = snd_create_std_mono_ctl(mixer, id, control,
1311 						cmask, val_type, name,
1312 						&snd_usb_mixer_vol_tlv);
1313 		if (err < 0)
1314 			return err;
1315 	}
1316 
1317 	return 0;
1318 }
1319 
1320 static int snd_c400_create_effect_ret_vol_ctls(struct usb_mixer_interface *mixer)
1321 {
1322 	char name[64];
1323 	unsigned int cmask;
1324 	int chan, err;
1325 	int num_outs = 0;
1326 	int offset = 0;
1327 
1328 	const unsigned int id = 0x40;
1329 	const int val_type = USB_MIXER_S16;
1330 	const int control = 1;
1331 
1332 	switch (mixer->chip->usb_id) {
1333 	case USB_ID(0x0763, 0x2030):
1334 		num_outs = 6;
1335 		offset = 0x3c;
1336 		/* { 0x3c, 0x43, 0x3e, 0x45, 0x40, 0x47 } */
1337 		break;
1338 	case USB_ID(0x0763, 0x2031):
1339 		num_outs = 8;
1340 		offset = 0x70;
1341 		/* { 0x70, 0x79, 0x72, 0x7b, 0x74, 0x7d, 0x76, 0x7f } */
1342 		break;
1343 	}
1344 
1345 	for (chan = 0; chan < num_outs; chan++) {
1346 		snprintf(name, sizeof(name),
1347 			"Effect Return %d",
1348 			chan + 1);
1349 
1350 		cmask = (chan == 0) ? 0 :
1351 			1 << (chan + (chan % 2) * num_outs - 1);
1352 		err = snd_create_std_mono_ctl_offset(mixer, id, control,
1353 						cmask, val_type, offset, name,
1354 						&snd_usb_mixer_vol_tlv);
1355 		if (err < 0)
1356 			return err;
1357 	}
1358 
1359 	return 0;
1360 }
1361 
1362 static int snd_c400_create_mixer(struct usb_mixer_interface *mixer)
1363 {
1364 	int err;
1365 
1366 	err = snd_c400_create_vol_ctls(mixer);
1367 	if (err < 0)
1368 		return err;
1369 
1370 	err = snd_c400_create_effect_vol_ctls(mixer);
1371 	if (err < 0)
1372 		return err;
1373 
1374 	err = snd_c400_create_effect_ret_vol_ctls(mixer);
1375 	if (err < 0)
1376 		return err;
1377 
1378 	err = snd_ftu_create_effect_switch(mixer, 2, 0x43);
1379 	if (err < 0)
1380 		return err;
1381 
1382 	err = snd_c400_create_effect_volume_ctl(mixer);
1383 	if (err < 0)
1384 		return err;
1385 
1386 	err = snd_c400_create_effect_duration_ctl(mixer);
1387 	if (err < 0)
1388 		return err;
1389 
1390 	err = snd_c400_create_effect_feedback_ctl(mixer);
1391 	if (err < 0)
1392 		return err;
1393 
1394 	return 0;
1395 }
1396 
1397 /*
1398  * The mixer units for Ebox-44 are corrupt, and even where they
1399  * are valid they presents mono controls as L and R channels of
1400  * stereo. So we provide a good mixer here.
1401  */
1402 static struct std_mono_table ebox44_table[] = {
1403 	{
1404 		.unitid = 4,
1405 		.control = 1,
1406 		.cmask = 0x0,
1407 		.val_type = USB_MIXER_INV_BOOLEAN,
1408 		.name = "Headphone Playback Switch"
1409 	},
1410 	{
1411 		.unitid = 4,
1412 		.control = 2,
1413 		.cmask = 0x1,
1414 		.val_type = USB_MIXER_S16,
1415 		.name = "Headphone A Mix Playback Volume"
1416 	},
1417 	{
1418 		.unitid = 4,
1419 		.control = 2,
1420 		.cmask = 0x2,
1421 		.val_type = USB_MIXER_S16,
1422 		.name = "Headphone B Mix Playback Volume"
1423 	},
1424 
1425 	{
1426 		.unitid = 7,
1427 		.control = 1,
1428 		.cmask = 0x0,
1429 		.val_type = USB_MIXER_INV_BOOLEAN,
1430 		.name = "Output Playback Switch"
1431 	},
1432 	{
1433 		.unitid = 7,
1434 		.control = 2,
1435 		.cmask = 0x1,
1436 		.val_type = USB_MIXER_S16,
1437 		.name = "Output A Playback Volume"
1438 	},
1439 	{
1440 		.unitid = 7,
1441 		.control = 2,
1442 		.cmask = 0x2,
1443 		.val_type = USB_MIXER_S16,
1444 		.name = "Output B Playback Volume"
1445 	},
1446 
1447 	{
1448 		.unitid = 10,
1449 		.control = 1,
1450 		.cmask = 0x0,
1451 		.val_type = USB_MIXER_INV_BOOLEAN,
1452 		.name = "Input Capture Switch"
1453 	},
1454 	{
1455 		.unitid = 10,
1456 		.control = 2,
1457 		.cmask = 0x1,
1458 		.val_type = USB_MIXER_S16,
1459 		.name = "Input A Capture Volume"
1460 	},
1461 	{
1462 		.unitid = 10,
1463 		.control = 2,
1464 		.cmask = 0x2,
1465 		.val_type = USB_MIXER_S16,
1466 		.name = "Input B Capture Volume"
1467 	},
1468 
1469 	{}
1470 };
1471 
1472 /* Audio Advantage Micro II findings:
1473  *
1474  * Mapping spdif AES bits to vendor register.bit:
1475  * AES0: [0 0 0 0 2.3 2.2 2.1 2.0] - default 0x00
1476  * AES1: [3.3 3.2.3.1.3.0 2.7 2.6 2.5 2.4] - default: 0x01
1477  * AES2: [0 0 0 0 0 0 0 0]
1478  * AES3: [0 0 0 0 0 0 x 0] - 'x' bit is set basing on standard usb request
1479  *                           (UAC_EP_CS_ATTR_SAMPLE_RATE) for Audio Devices
1480  *
1481  * power on values:
1482  * r2: 0x10
1483  * r3: 0x20 (b7 is zeroed just before playback (except IEC61937) and set
1484  *           just after it to 0xa0, presumably it disables/mutes some analog
1485  *           parts when there is no audio.)
1486  * r9: 0x28
1487  *
1488  * Optical transmitter on/off:
1489  * vendor register.bit: 9.1
1490  * 0 - on (0x28 register value)
1491  * 1 - off (0x2a register value)
1492  *
1493  */
1494 static int snd_microii_spdif_info(struct snd_kcontrol *kcontrol,
1495 	struct snd_ctl_elem_info *uinfo)
1496 {
1497 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1498 	uinfo->count = 1;
1499 	return 0;
1500 }
1501 
1502 static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
1503 	struct snd_ctl_elem_value *ucontrol)
1504 {
1505 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1506 	struct snd_usb_audio *chip = list->mixer->chip;
1507 	int err;
1508 	struct usb_interface *iface;
1509 	struct usb_host_interface *alts;
1510 	unsigned int ep;
1511 	unsigned char data[3];
1512 	int rate;
1513 
1514 	err = snd_usb_lock_shutdown(chip);
1515 	if (err < 0)
1516 		return err;
1517 
1518 	ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff;
1519 	ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff;
1520 	ucontrol->value.iec958.status[2] = 0x00;
1521 
1522 	/* use known values for that card: interface#1 altsetting#1 */
1523 	iface = usb_ifnum_to_if(chip->dev, 1);
1524 	if (!iface || iface->num_altsetting < 2)
1525 		return -EINVAL;
1526 	alts = &iface->altsetting[1];
1527 	if (get_iface_desc(alts)->bNumEndpoints < 1)
1528 		return -EINVAL;
1529 	ep = get_endpoint(alts, 0)->bEndpointAddress;
1530 
1531 	err = snd_usb_ctl_msg(chip->dev,
1532 			usb_rcvctrlpipe(chip->dev, 0),
1533 			UAC_GET_CUR,
1534 			USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN,
1535 			UAC_EP_CS_ATTR_SAMPLE_RATE << 8,
1536 			ep,
1537 			data,
1538 			sizeof(data));
1539 	if (err < 0)
1540 		goto end;
1541 
1542 	rate = data[0] | (data[1] << 8) | (data[2] << 16);
1543 	ucontrol->value.iec958.status[3] = (rate == 48000) ?
1544 			IEC958_AES3_CON_FS_48000 : IEC958_AES3_CON_FS_44100;
1545 
1546 	err = 0;
1547  end:
1548 	snd_usb_unlock_shutdown(chip);
1549 	return err;
1550 }
1551 
1552 static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list)
1553 {
1554 	struct snd_usb_audio *chip = list->mixer->chip;
1555 	unsigned int pval = list->kctl->private_value;
1556 	u8 reg;
1557 	int err;
1558 
1559 	err = snd_usb_lock_shutdown(chip);
1560 	if (err < 0)
1561 		return err;
1562 
1563 	reg = ((pval >> 4) & 0xf0) | (pval & 0x0f);
1564 	err = snd_usb_ctl_msg(chip->dev,
1565 			usb_sndctrlpipe(chip->dev, 0),
1566 			UAC_SET_CUR,
1567 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1568 			reg,
1569 			2,
1570 			NULL,
1571 			0);
1572 	if (err < 0)
1573 		goto end;
1574 
1575 	reg = (pval & IEC958_AES0_NONAUDIO) ? 0xa0 : 0x20;
1576 	reg |= (pval >> 12) & 0x0f;
1577 	err = snd_usb_ctl_msg(chip->dev,
1578 			usb_sndctrlpipe(chip->dev, 0),
1579 			UAC_SET_CUR,
1580 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1581 			reg,
1582 			3,
1583 			NULL,
1584 			0);
1585 	if (err < 0)
1586 		goto end;
1587 
1588  end:
1589 	snd_usb_unlock_shutdown(chip);
1590 	return err;
1591 }
1592 
1593 static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
1594 	struct snd_ctl_elem_value *ucontrol)
1595 {
1596 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1597 	unsigned int pval, pval_old;
1598 	int err;
1599 
1600 	pval = pval_old = kcontrol->private_value;
1601 	pval &= 0xfffff0f0;
1602 	pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
1603 	pval |= (ucontrol->value.iec958.status[0] & 0x0f);
1604 
1605 	pval &= 0xffff0fff;
1606 	pval |= (ucontrol->value.iec958.status[1] & 0xf0) << 8;
1607 
1608 	/* The frequency bits in AES3 cannot be set via register access. */
1609 
1610 	/* Silently ignore any bits from the request that cannot be set. */
1611 
1612 	if (pval == pval_old)
1613 		return 0;
1614 
1615 	kcontrol->private_value = pval;
1616 	err = snd_microii_spdif_default_update(list);
1617 	return err < 0 ? err : 1;
1618 }
1619 
1620 static int snd_microii_spdif_mask_get(struct snd_kcontrol *kcontrol,
1621 	struct snd_ctl_elem_value *ucontrol)
1622 {
1623 	ucontrol->value.iec958.status[0] = 0x0f;
1624 	ucontrol->value.iec958.status[1] = 0xff;
1625 	ucontrol->value.iec958.status[2] = 0x00;
1626 	ucontrol->value.iec958.status[3] = 0x00;
1627 
1628 	return 0;
1629 }
1630 
1631 static int snd_microii_spdif_switch_get(struct snd_kcontrol *kcontrol,
1632 	struct snd_ctl_elem_value *ucontrol)
1633 {
1634 	ucontrol->value.integer.value[0] = !(kcontrol->private_value & 0x02);
1635 
1636 	return 0;
1637 }
1638 
1639 static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list)
1640 {
1641 	struct snd_usb_audio *chip = list->mixer->chip;
1642 	u8 reg = list->kctl->private_value;
1643 	int err;
1644 
1645 	err = snd_usb_lock_shutdown(chip);
1646 	if (err < 0)
1647 		return err;
1648 
1649 	err = snd_usb_ctl_msg(chip->dev,
1650 			usb_sndctrlpipe(chip->dev, 0),
1651 			UAC_SET_CUR,
1652 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1653 			reg,
1654 			9,
1655 			NULL,
1656 			0);
1657 
1658 	snd_usb_unlock_shutdown(chip);
1659 	return err;
1660 }
1661 
1662 static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol,
1663 	struct snd_ctl_elem_value *ucontrol)
1664 {
1665 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1666 	u8 reg;
1667 	int err;
1668 
1669 	reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a;
1670 	if (reg != list->kctl->private_value)
1671 		return 0;
1672 
1673 	kcontrol->private_value = reg;
1674 	err = snd_microii_spdif_switch_update(list);
1675 	return err < 0 ? err : 1;
1676 }
1677 
1678 static struct snd_kcontrol_new snd_microii_mixer_spdif[] = {
1679 	{
1680 		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1681 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
1682 		.info =     snd_microii_spdif_info,
1683 		.get =      snd_microii_spdif_default_get,
1684 		.put =      snd_microii_spdif_default_put,
1685 		.private_value = 0x00000100UL,/* reset value */
1686 	},
1687 	{
1688 		.access =   SNDRV_CTL_ELEM_ACCESS_READ,
1689 		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1690 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
1691 		.info =     snd_microii_spdif_info,
1692 		.get =      snd_microii_spdif_mask_get,
1693 	},
1694 	{
1695 		.iface =    SNDRV_CTL_ELEM_IFACE_MIXER,
1696 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
1697 		.info =     snd_ctl_boolean_mono_info,
1698 		.get =      snd_microii_spdif_switch_get,
1699 		.put =      snd_microii_spdif_switch_put,
1700 		.private_value = 0x00000028UL,/* reset value */
1701 	}
1702 };
1703 
1704 static int snd_microii_controls_create(struct usb_mixer_interface *mixer)
1705 {
1706 	int err, i;
1707 	static usb_mixer_elem_resume_func_t resume_funcs[] = {
1708 		snd_microii_spdif_default_update,
1709 		NULL,
1710 		snd_microii_spdif_switch_update
1711 	};
1712 
1713 	for (i = 0; i < ARRAY_SIZE(snd_microii_mixer_spdif); ++i) {
1714 		err = add_single_ctl_with_resume(mixer, 0,
1715 						 resume_funcs[i],
1716 						 &snd_microii_mixer_spdif[i],
1717 						 NULL);
1718 		if (err < 0)
1719 			return err;
1720 	}
1721 
1722 	return 0;
1723 }
1724 
1725 /* Creative Sound Blaster E1 */
1726 
1727 static int snd_soundblaster_e1_switch_get(struct snd_kcontrol *kcontrol,
1728 					  struct snd_ctl_elem_value *ucontrol)
1729 {
1730 	ucontrol->value.integer.value[0] = kcontrol->private_value;
1731 	return 0;
1732 }
1733 
1734 static int snd_soundblaster_e1_switch_update(struct usb_mixer_interface *mixer,
1735 					     unsigned char state)
1736 {
1737 	struct snd_usb_audio *chip = mixer->chip;
1738 	int err;
1739 	unsigned char buff[2];
1740 
1741 	buff[0] = 0x02;
1742 	buff[1] = state ? 0x02 : 0x00;
1743 
1744 	err = snd_usb_lock_shutdown(chip);
1745 	if (err < 0)
1746 		return err;
1747 	err = snd_usb_ctl_msg(chip->dev,
1748 			usb_sndctrlpipe(chip->dev, 0), HID_REQ_SET_REPORT,
1749 			USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
1750 			0x0202, 3, buff, 2);
1751 	snd_usb_unlock_shutdown(chip);
1752 	return err;
1753 }
1754 
1755 static int snd_soundblaster_e1_switch_put(struct snd_kcontrol *kcontrol,
1756 					  struct snd_ctl_elem_value *ucontrol)
1757 {
1758 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1759 	unsigned char value = !!ucontrol->value.integer.value[0];
1760 	int err;
1761 
1762 	if (kcontrol->private_value == value)
1763 		return 0;
1764 	kcontrol->private_value = value;
1765 	err = snd_soundblaster_e1_switch_update(list->mixer, value);
1766 	return err < 0 ? err : 1;
1767 }
1768 
1769 static int snd_soundblaster_e1_switch_resume(struct usb_mixer_elem_list *list)
1770 {
1771 	return snd_soundblaster_e1_switch_update(list->mixer,
1772 						 list->kctl->private_value);
1773 }
1774 
1775 static int snd_soundblaster_e1_switch_info(struct snd_kcontrol *kcontrol,
1776 					   struct snd_ctl_elem_info *uinfo)
1777 {
1778 	static const char *const texts[2] = {
1779 		"Mic", "Aux"
1780 	};
1781 
1782 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
1783 }
1784 
1785 static struct snd_kcontrol_new snd_soundblaster_e1_input_switch = {
1786 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1787 	.name = "Input Source",
1788 	.info = snd_soundblaster_e1_switch_info,
1789 	.get = snd_soundblaster_e1_switch_get,
1790 	.put = snd_soundblaster_e1_switch_put,
1791 	.private_value = 0,
1792 };
1793 
1794 static int snd_soundblaster_e1_switch_create(struct usb_mixer_interface *mixer)
1795 {
1796 	return add_single_ctl_with_resume(mixer, 0,
1797 					  snd_soundblaster_e1_switch_resume,
1798 					  &snd_soundblaster_e1_input_switch,
1799 					  NULL);
1800 }
1801 
1802 int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
1803 {
1804 	int err = 0;
1805 	struct snd_info_entry *entry;
1806 
1807 	if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
1808 		return err;
1809 
1810 	switch (mixer->chip->usb_id) {
1811 	/* Tascam US-16x08 */
1812 	case USB_ID(0x0644, 0x8047):
1813 		err = snd_us16x08_controls_create(mixer);
1814 		break;
1815 	case USB_ID(0x041e, 0x3020):
1816 	case USB_ID(0x041e, 0x3040):
1817 	case USB_ID(0x041e, 0x3042):
1818 	case USB_ID(0x041e, 0x30df):
1819 	case USB_ID(0x041e, 0x3048):
1820 		err = snd_audigy2nx_controls_create(mixer);
1821 		if (err < 0)
1822 			break;
1823 		if (!snd_card_proc_new(mixer->chip->card, "audigy2nx", &entry))
1824 			snd_info_set_text_ops(entry, mixer,
1825 					      snd_audigy2nx_proc_read);
1826 		break;
1827 
1828 	/* EMU0204 */
1829 	case USB_ID(0x041e, 0x3f19):
1830 		err = snd_emu0204_controls_create(mixer);
1831 		if (err < 0)
1832 			break;
1833 		break;
1834 
1835 	case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
1836 	case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
1837 		err = snd_c400_create_mixer(mixer);
1838 		break;
1839 
1840 	case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
1841 	case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
1842 		err = snd_ftu_create_mixer(mixer);
1843 		break;
1844 
1845 	case USB_ID(0x0b05, 0x1739): /* ASUS Xonar U1 */
1846 	case USB_ID(0x0b05, 0x1743): /* ASUS Xonar U1 (2) */
1847 	case USB_ID(0x0b05, 0x17a0): /* ASUS Xonar U3 */
1848 		err = snd_xonar_u1_controls_create(mixer);
1849 		break;
1850 
1851 	case USB_ID(0x0d8c, 0x0103): /* Audio Advantage Micro II */
1852 		err = snd_microii_controls_create(mixer);
1853 		break;
1854 
1855 	case USB_ID(0x0dba, 0x1000): /* Digidesign Mbox 1 */
1856 		err = snd_mbox1_create_sync_switch(mixer);
1857 		break;
1858 
1859 	case USB_ID(0x17cc, 0x1011): /* Traktor Audio 6 */
1860 		err = snd_nativeinstruments_create_mixer(mixer,
1861 				snd_nativeinstruments_ta6_mixers,
1862 				ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
1863 		break;
1864 
1865 	case USB_ID(0x17cc, 0x1021): /* Traktor Audio 10 */
1866 		err = snd_nativeinstruments_create_mixer(mixer,
1867 				snd_nativeinstruments_ta10_mixers,
1868 				ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
1869 		break;
1870 
1871 	case USB_ID(0x200c, 0x1018): /* Electrix Ebox-44 */
1872 		/* detection is disabled in mixer_maps.c */
1873 		err = snd_create_std_mono_table(mixer, ebox44_table);
1874 		break;
1875 
1876 	case USB_ID(0x1235, 0x8012): /* Focusrite Scarlett 6i6 */
1877 	case USB_ID(0x1235, 0x8002): /* Focusrite Scarlett 8i6 */
1878 	case USB_ID(0x1235, 0x8004): /* Focusrite Scarlett 18i6 */
1879 	case USB_ID(0x1235, 0x8014): /* Focusrite Scarlett 18i8 */
1880 	case USB_ID(0x1235, 0x800c): /* Focusrite Scarlett 18i20 */
1881 		err = snd_scarlett_controls_create(mixer);
1882 		break;
1883 
1884 	case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */
1885 		err = snd_soundblaster_e1_switch_create(mixer);
1886 		break;
1887 	}
1888 
1889 	return err;
1890 }
1891 
1892 void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
1893 				    int unitid)
1894 {
1895 	if (!mixer->rc_cfg)
1896 		return;
1897 	/* unit ids specific to Extigy/Audigy 2 NX: */
1898 	switch (unitid) {
1899 	case 0: /* remote control */
1900 		mixer->rc_urb->dev = mixer->chip->dev;
1901 		usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1902 		break;
1903 	case 4: /* digital in jack */
1904 	case 7: /* line in jacks */
1905 	case 19: /* speaker out jacks */
1906 	case 20: /* headphones out jack */
1907 		break;
1908 	/* live24ext: 4 = line-in jack */
1909 	case 3:	/* hp-out jack (may actuate Mute) */
1910 		if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1911 		    mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
1912 			snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
1913 		break;
1914 	default:
1915 		usb_audio_dbg(mixer->chip, "memory change in unknown unit %d\n", unitid);
1916 		break;
1917 	}
1918 }
1919 
1920 static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer,
1921 					 struct usb_mixer_elem_info *cval,
1922 					 struct snd_kcontrol *kctl)
1923 {
1924 	/* Approximation using 10 ranges based on output measurement on hw v1.2.
1925 	 * This seems close to the cubic mapping e.g. alsamixer uses. */
1926 	static const DECLARE_TLV_DB_RANGE(scale,
1927 		 0,  1, TLV_DB_MINMAX_ITEM(-5300, -4970),
1928 		 2,  5, TLV_DB_MINMAX_ITEM(-4710, -4160),
1929 		 6,  7, TLV_DB_MINMAX_ITEM(-3884, -3710),
1930 		 8, 14, TLV_DB_MINMAX_ITEM(-3443, -2560),
1931 		15, 16, TLV_DB_MINMAX_ITEM(-2475, -2324),
1932 		17, 19, TLV_DB_MINMAX_ITEM(-2228, -2031),
1933 		20, 26, TLV_DB_MINMAX_ITEM(-1910, -1393),
1934 		27, 31, TLV_DB_MINMAX_ITEM(-1322, -1032),
1935 		32, 40, TLV_DB_MINMAX_ITEM(-968, -490),
1936 		41, 50, TLV_DB_MINMAX_ITEM(-441, 0),
1937 	);
1938 
1939 	if (cval->min == 0 && cval->max == 50) {
1940 		usb_audio_info(mixer->chip, "applying DragonFly dB scale quirk (0-50 variant)\n");
1941 		kctl->tlv.p = scale;
1942 		kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1943 		kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
1944 
1945 	} else if (cval->min == 0 && cval->max <= 1000) {
1946 		/* Some other clearly broken DragonFly variant.
1947 		 * At least a 0..53 variant (hw v1.0) exists.
1948 		 */
1949 		usb_audio_info(mixer->chip, "ignoring too narrow dB range on a DragonFly device");
1950 		kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
1951 	}
1952 }
1953 
1954 void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
1955 				  struct usb_mixer_elem_info *cval, int unitid,
1956 				  struct snd_kcontrol *kctl)
1957 {
1958 	switch (mixer->chip->usb_id) {
1959 	case USB_ID(0x21b4, 0x0081): /* AudioQuest DragonFly */
1960 		if (unitid == 7 && cval->control == UAC_FU_VOLUME)
1961 			snd_dragonfly_quirk_db_scale(mixer, cval, kctl);
1962 		break;
1963 	/* lowest playback value is muted on C-Media devices */
1964 	case USB_ID(0x0d8c, 0x000c):
1965 	case USB_ID(0x0d8c, 0x0014):
1966 		if (strstr(kctl->id.name, "Playback"))
1967 			cval->min_mute = 1;
1968 		break;
1969 	}
1970 }
1971 
1972