xref: /openbmc/linux/sound/usb/mixer_quirks.c (revision b71cdf15)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   USB Audio Driver for ALSA
4  *
5  *   Quirks and vendor-specific extensions for mixer interfaces
6  *
7  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
8  *
9  *   Many codes borrowed from audio.c by
10  *	    Alan Cox (alan@lxorguk.ukuu.org.uk)
11  *	    Thomas Sailer (sailer@ife.ee.ethz.ch)
12  *
13  *   Audio Advantage Micro II support added by:
14  *	    Przemek Rudy (prudy1@o2.pl)
15  */
16 
17 #include <linux/hid.h>
18 #include <linux/init.h>
19 #include <linux/math64.h>
20 #include <linux/slab.h>
21 #include <linux/usb.h>
22 #include <linux/usb/audio.h>
23 
24 #include <sound/asoundef.h>
25 #include <sound/core.h>
26 #include <sound/control.h>
27 #include <sound/hwdep.h>
28 #include <sound/info.h>
29 #include <sound/tlv.h>
30 
31 #include "usbaudio.h"
32 #include "mixer.h"
33 #include "mixer_quirks.h"
34 #include "mixer_scarlett.h"
35 #include "mixer_scarlett_gen2.h"
36 #include "mixer_us16x08.h"
37 #include "mixer_s1810c.h"
38 #include "helper.h"
39 
40 struct std_mono_table {
41 	unsigned int unitid, control, cmask;
42 	int val_type;
43 	const char *name;
44 	snd_kcontrol_tlv_rw_t *tlv_callback;
45 };
46 
47 /* This function allows for the creation of standard UAC controls.
48  * See the quirks for M-Audio FTUs or Ebox-44.
49  * If you don't want to set a TLV callback pass NULL.
50  *
51  * Since there doesn't seem to be a devices that needs a multichannel
52  * version, we keep it mono for simplicity.
53  */
54 static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
55 				unsigned int unitid,
56 				unsigned int control,
57 				unsigned int cmask,
58 				int val_type,
59 				unsigned int idx_off,
60 				const char *name,
61 				snd_kcontrol_tlv_rw_t *tlv_callback)
62 {
63 	struct usb_mixer_elem_info *cval;
64 	struct snd_kcontrol *kctl;
65 
66 	cval = kzalloc(sizeof(*cval), GFP_KERNEL);
67 	if (!cval)
68 		return -ENOMEM;
69 
70 	snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid);
71 	cval->val_type = val_type;
72 	cval->channels = 1;
73 	cval->control = control;
74 	cval->cmask = cmask;
75 	cval->idx_off = idx_off;
76 
77 	/* get_min_max() is called only for integer volumes later,
78 	 * so provide a short-cut for booleans */
79 	cval->min = 0;
80 	cval->max = 1;
81 	cval->res = 0;
82 	cval->dBmin = 0;
83 	cval->dBmax = 0;
84 
85 	/* Create control */
86 	kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
87 	if (!kctl) {
88 		kfree(cval);
89 		return -ENOMEM;
90 	}
91 
92 	/* Set name */
93 	snprintf(kctl->id.name, sizeof(kctl->id.name), name);
94 	kctl->private_free = snd_usb_mixer_elem_free;
95 
96 	/* set TLV */
97 	if (tlv_callback) {
98 		kctl->tlv.c = tlv_callback;
99 		kctl->vd[0].access |=
100 			SNDRV_CTL_ELEM_ACCESS_TLV_READ |
101 			SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
102 	}
103 	/* Add control to mixer */
104 	return snd_usb_mixer_add_control(&cval->head, kctl);
105 }
106 
107 static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
108 				unsigned int unitid,
109 				unsigned int control,
110 				unsigned int cmask,
111 				int val_type,
112 				const char *name,
113 				snd_kcontrol_tlv_rw_t *tlv_callback)
114 {
115 	return snd_create_std_mono_ctl_offset(mixer, unitid, control, cmask,
116 		val_type, 0 /* Offset */, name, tlv_callback);
117 }
118 
119 /*
120  * Create a set of standard UAC controls from a table
121  */
122 static int snd_create_std_mono_table(struct usb_mixer_interface *mixer,
123 				     const struct std_mono_table *t)
124 {
125 	int err;
126 
127 	while (t->name != NULL) {
128 		err = snd_create_std_mono_ctl(mixer, t->unitid, t->control,
129 				t->cmask, t->val_type, t->name, t->tlv_callback);
130 		if (err < 0)
131 			return err;
132 		t++;
133 	}
134 
135 	return 0;
136 }
137 
138 static int add_single_ctl_with_resume(struct usb_mixer_interface *mixer,
139 				      int id,
140 				      usb_mixer_elem_resume_func_t resume,
141 				      const struct snd_kcontrol_new *knew,
142 				      struct usb_mixer_elem_list **listp)
143 {
144 	struct usb_mixer_elem_list *list;
145 	struct snd_kcontrol *kctl;
146 
147 	list = kzalloc(sizeof(*list), GFP_KERNEL);
148 	if (!list)
149 		return -ENOMEM;
150 	if (listp)
151 		*listp = list;
152 	list->mixer = mixer;
153 	list->id = id;
154 	list->reset_resume = resume;
155 	kctl = snd_ctl_new1(knew, list);
156 	if (!kctl) {
157 		kfree(list);
158 		return -ENOMEM;
159 	}
160 	kctl->private_free = snd_usb_mixer_elem_free;
161 	/* don't use snd_usb_mixer_add_control() here, this is a special list element */
162 	return snd_usb_mixer_add_list(list, kctl, false);
163 }
164 
165 /*
166  * Sound Blaster remote control configuration
167  *
168  * format of remote control data:
169  * Extigy:       xx 00
170  * Audigy 2 NX:  06 80 xx 00 00 00
171  * Live! 24-bit: 06 80 xx yy 22 83
172  */
173 static const struct rc_config {
174 	u32 usb_id;
175 	u8  offset;
176 	u8  length;
177 	u8  packet_length;
178 	u8  min_packet_length; /* minimum accepted length of the URB result */
179 	u8  mute_mixer_id;
180 	u32 mute_code;
181 } rc_configs[] = {
182 	{ USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
183 	{ USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
184 	{ USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
185 	{ USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
186 	{ USB_ID(0x041e, 0x30df), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
187 	{ USB_ID(0x041e, 0x3237), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
188 	{ USB_ID(0x041e, 0x3263), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
189 	{ USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
190 };
191 
192 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
193 {
194 	struct usb_mixer_interface *mixer = urb->context;
195 	const struct rc_config *rc = mixer->rc_cfg;
196 	u32 code;
197 
198 	if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
199 		return;
200 
201 	code = mixer->rc_buffer[rc->offset];
202 	if (rc->length == 2)
203 		code |= mixer->rc_buffer[rc->offset + 1] << 8;
204 
205 	/* the Mute button actually changes the mixer control */
206 	if (code == rc->mute_code)
207 		snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
208 	mixer->rc_code = code;
209 	wmb();
210 	wake_up(&mixer->rc_waitq);
211 }
212 
213 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
214 				     long count, loff_t *offset)
215 {
216 	struct usb_mixer_interface *mixer = hw->private_data;
217 	int err;
218 	u32 rc_code;
219 
220 	if (count != 1 && count != 4)
221 		return -EINVAL;
222 	err = wait_event_interruptible(mixer->rc_waitq,
223 				       (rc_code = xchg(&mixer->rc_code, 0)) != 0);
224 	if (err == 0) {
225 		if (count == 1)
226 			err = put_user(rc_code, buf);
227 		else
228 			err = put_user(rc_code, (u32 __user *)buf);
229 	}
230 	return err < 0 ? err : count;
231 }
232 
233 static __poll_t snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
234 					    poll_table *wait)
235 {
236 	struct usb_mixer_interface *mixer = hw->private_data;
237 
238 	poll_wait(file, &mixer->rc_waitq, wait);
239 	return mixer->rc_code ? EPOLLIN | EPOLLRDNORM : 0;
240 }
241 
242 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
243 {
244 	struct snd_hwdep *hwdep;
245 	int err, len, i;
246 
247 	for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
248 		if (rc_configs[i].usb_id == mixer->chip->usb_id)
249 			break;
250 	if (i >= ARRAY_SIZE(rc_configs))
251 		return 0;
252 	mixer->rc_cfg = &rc_configs[i];
253 
254 	len = mixer->rc_cfg->packet_length;
255 
256 	init_waitqueue_head(&mixer->rc_waitq);
257 	err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
258 	if (err < 0)
259 		return err;
260 	snprintf(hwdep->name, sizeof(hwdep->name),
261 		 "%s remote control", mixer->chip->card->shortname);
262 	hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
263 	hwdep->private_data = mixer;
264 	hwdep->ops.read = snd_usb_sbrc_hwdep_read;
265 	hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
266 	hwdep->exclusive = 1;
267 
268 	mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
269 	if (!mixer->rc_urb)
270 		return -ENOMEM;
271 	mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
272 	if (!mixer->rc_setup_packet) {
273 		usb_free_urb(mixer->rc_urb);
274 		mixer->rc_urb = NULL;
275 		return -ENOMEM;
276 	}
277 	mixer->rc_setup_packet->bRequestType =
278 		USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
279 	mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
280 	mixer->rc_setup_packet->wValue = cpu_to_le16(0);
281 	mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
282 	mixer->rc_setup_packet->wLength = cpu_to_le16(len);
283 	usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
284 			     usb_rcvctrlpipe(mixer->chip->dev, 0),
285 			     (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
286 			     snd_usb_soundblaster_remote_complete, mixer);
287 	return 0;
288 }
289 
290 #define snd_audigy2nx_led_info		snd_ctl_boolean_mono_info
291 
292 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
293 {
294 	ucontrol->value.integer.value[0] = kcontrol->private_value >> 8;
295 	return 0;
296 }
297 
298 static int snd_audigy2nx_led_update(struct usb_mixer_interface *mixer,
299 				    int value, int index)
300 {
301 	struct snd_usb_audio *chip = mixer->chip;
302 	int err;
303 
304 	err = snd_usb_lock_shutdown(chip);
305 	if (err < 0)
306 		return err;
307 
308 	if (chip->usb_id == USB_ID(0x041e, 0x3042))
309 		err = snd_usb_ctl_msg(chip->dev,
310 			      usb_sndctrlpipe(chip->dev, 0), 0x24,
311 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
312 			      !value, 0, NULL, 0);
313 	/* USB X-Fi S51 Pro */
314 	if (chip->usb_id == USB_ID(0x041e, 0x30df))
315 		err = snd_usb_ctl_msg(chip->dev,
316 			      usb_sndctrlpipe(chip->dev, 0), 0x24,
317 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
318 			      !value, 0, NULL, 0);
319 	else
320 		err = snd_usb_ctl_msg(chip->dev,
321 			      usb_sndctrlpipe(chip->dev, 0), 0x24,
322 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
323 			      value, index + 2, NULL, 0);
324 	snd_usb_unlock_shutdown(chip);
325 	return err;
326 }
327 
328 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol,
329 				 struct snd_ctl_elem_value *ucontrol)
330 {
331 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
332 	struct usb_mixer_interface *mixer = list->mixer;
333 	int index = kcontrol->private_value & 0xff;
334 	unsigned int value = ucontrol->value.integer.value[0];
335 	int old_value = kcontrol->private_value >> 8;
336 	int err;
337 
338 	if (value > 1)
339 		return -EINVAL;
340 	if (value == old_value)
341 		return 0;
342 	kcontrol->private_value = (value << 8) | index;
343 	err = snd_audigy2nx_led_update(mixer, value, index);
344 	return err < 0 ? err : 1;
345 }
346 
347 static int snd_audigy2nx_led_resume(struct usb_mixer_elem_list *list)
348 {
349 	int priv_value = list->kctl->private_value;
350 
351 	return snd_audigy2nx_led_update(list->mixer, priv_value >> 8,
352 					priv_value & 0xff);
353 }
354 
355 /* name and private_value are set dynamically */
356 static const struct snd_kcontrol_new snd_audigy2nx_control = {
357 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
358 	.info = snd_audigy2nx_led_info,
359 	.get = snd_audigy2nx_led_get,
360 	.put = snd_audigy2nx_led_put,
361 };
362 
363 static const char * const snd_audigy2nx_led_names[] = {
364 	"CMSS LED Switch",
365 	"Power LED Switch",
366 	"Dolby Digital LED Switch",
367 };
368 
369 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
370 {
371 	int i, err;
372 
373 	for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_led_names); ++i) {
374 		struct snd_kcontrol_new knew;
375 
376 		/* USB X-Fi S51 doesn't have a CMSS LED */
377 		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
378 			continue;
379 		/* USB X-Fi S51 Pro doesn't have one either */
380 		if ((mixer->chip->usb_id == USB_ID(0x041e, 0x30df)) && i == 0)
381 			continue;
382 		if (i > 1 && /* Live24ext has 2 LEDs only */
383 			(mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
384 			 mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
385 			 mixer->chip->usb_id == USB_ID(0x041e, 0x30df) ||
386 			 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
387 			break;
388 
389 		knew = snd_audigy2nx_control;
390 		knew.name = snd_audigy2nx_led_names[i];
391 		knew.private_value = (1 << 8) | i; /* LED on as default */
392 		err = add_single_ctl_with_resume(mixer, 0,
393 						 snd_audigy2nx_led_resume,
394 						 &knew, NULL);
395 		if (err < 0)
396 			return err;
397 	}
398 	return 0;
399 }
400 
401 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
402 				    struct snd_info_buffer *buffer)
403 {
404 	static const struct sb_jack {
405 		int unitid;
406 		const char *name;
407 	}  jacks_audigy2nx[] = {
408 		{4,  "dig in "},
409 		{7,  "line in"},
410 		{19, "spk out"},
411 		{20, "hph out"},
412 		{-1, NULL}
413 	}, jacks_live24ext[] = {
414 		{4,  "line in"}, /* &1=Line, &2=Mic*/
415 		{3,  "hph out"}, /* headphones */
416 		{0,  "RC     "}, /* last command, 6 bytes see rc_config above */
417 		{-1, NULL}
418 	};
419 	const struct sb_jack *jacks;
420 	struct usb_mixer_interface *mixer = entry->private_data;
421 	int i, err;
422 	u8 buf[3];
423 
424 	snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
425 	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
426 		jacks = jacks_audigy2nx;
427 	else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
428 		 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
429 		jacks = jacks_live24ext;
430 	else
431 		return;
432 
433 	for (i = 0; jacks[i].name; ++i) {
434 		snd_iprintf(buffer, "%s: ", jacks[i].name);
435 		err = snd_usb_lock_shutdown(mixer->chip);
436 		if (err < 0)
437 			return;
438 		err = snd_usb_ctl_msg(mixer->chip->dev,
439 				      usb_rcvctrlpipe(mixer->chip->dev, 0),
440 				      UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
441 				      USB_RECIP_INTERFACE, 0,
442 				      jacks[i].unitid << 8, buf, 3);
443 		snd_usb_unlock_shutdown(mixer->chip);
444 		if (err == 3 && (buf[0] == 3 || buf[0] == 6))
445 			snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
446 		else
447 			snd_iprintf(buffer, "?\n");
448 	}
449 }
450 
451 /* EMU0204 */
452 static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol,
453 				      struct snd_ctl_elem_info *uinfo)
454 {
455 	static const char * const texts[2] = {"1/2", "3/4"};
456 
457 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
458 }
459 
460 static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
461 				     struct snd_ctl_elem_value *ucontrol)
462 {
463 	ucontrol->value.enumerated.item[0] = kcontrol->private_value;
464 	return 0;
465 }
466 
467 static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
468 					int value)
469 {
470 	struct snd_usb_audio *chip = mixer->chip;
471 	int err;
472 	unsigned char buf[2];
473 
474 	err = snd_usb_lock_shutdown(chip);
475 	if (err < 0)
476 		return err;
477 
478 	buf[0] = 0x01;
479 	buf[1] = value ? 0x02 : 0x01;
480 	err = snd_usb_ctl_msg(chip->dev,
481 		      usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
482 		      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
483 		      0x0400, 0x0e00, buf, 2);
484 	snd_usb_unlock_shutdown(chip);
485 	return err;
486 }
487 
488 static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
489 				     struct snd_ctl_elem_value *ucontrol)
490 {
491 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
492 	struct usb_mixer_interface *mixer = list->mixer;
493 	unsigned int value = ucontrol->value.enumerated.item[0];
494 	int err;
495 
496 	if (value > 1)
497 		return -EINVAL;
498 
499 	if (value == kcontrol->private_value)
500 		return 0;
501 
502 	kcontrol->private_value = value;
503 	err = snd_emu0204_ch_switch_update(mixer, value);
504 	return err < 0 ? err : 1;
505 }
506 
507 static int snd_emu0204_ch_switch_resume(struct usb_mixer_elem_list *list)
508 {
509 	return snd_emu0204_ch_switch_update(list->mixer,
510 					    list->kctl->private_value);
511 }
512 
513 static const struct snd_kcontrol_new snd_emu0204_control = {
514 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
515 	.name = "Front Jack Channels",
516 	.info = snd_emu0204_ch_switch_info,
517 	.get = snd_emu0204_ch_switch_get,
518 	.put = snd_emu0204_ch_switch_put,
519 	.private_value = 0,
520 };
521 
522 static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
523 {
524 	return add_single_ctl_with_resume(mixer, 0,
525 					  snd_emu0204_ch_switch_resume,
526 					  &snd_emu0204_control, NULL);
527 }
528 
529 /* ASUS Xonar U1 / U3 controls */
530 
531 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
532 				   struct snd_ctl_elem_value *ucontrol)
533 {
534 	ucontrol->value.integer.value[0] = !!(kcontrol->private_value & 0x02);
535 	return 0;
536 }
537 
538 static int snd_xonar_u1_switch_update(struct usb_mixer_interface *mixer,
539 				      unsigned char status)
540 {
541 	struct snd_usb_audio *chip = mixer->chip;
542 	int err;
543 
544 	err = snd_usb_lock_shutdown(chip);
545 	if (err < 0)
546 		return err;
547 	err = snd_usb_ctl_msg(chip->dev,
548 			      usb_sndctrlpipe(chip->dev, 0), 0x08,
549 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
550 			      50, 0, &status, 1);
551 	snd_usb_unlock_shutdown(chip);
552 	return err;
553 }
554 
555 static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
556 				   struct snd_ctl_elem_value *ucontrol)
557 {
558 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
559 	u8 old_status, new_status;
560 	int err;
561 
562 	old_status = kcontrol->private_value;
563 	if (ucontrol->value.integer.value[0])
564 		new_status = old_status | 0x02;
565 	else
566 		new_status = old_status & ~0x02;
567 	if (new_status == old_status)
568 		return 0;
569 
570 	kcontrol->private_value = new_status;
571 	err = snd_xonar_u1_switch_update(list->mixer, new_status);
572 	return err < 0 ? err : 1;
573 }
574 
575 static int snd_xonar_u1_switch_resume(struct usb_mixer_elem_list *list)
576 {
577 	return snd_xonar_u1_switch_update(list->mixer,
578 					  list->kctl->private_value);
579 }
580 
581 static const struct snd_kcontrol_new snd_xonar_u1_output_switch = {
582 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
583 	.name = "Digital Playback Switch",
584 	.info = snd_ctl_boolean_mono_info,
585 	.get = snd_xonar_u1_switch_get,
586 	.put = snd_xonar_u1_switch_put,
587 	.private_value = 0x05,
588 };
589 
590 static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
591 {
592 	return add_single_ctl_with_resume(mixer, 0,
593 					  snd_xonar_u1_switch_resume,
594 					  &snd_xonar_u1_output_switch, NULL);
595 }
596 
597 /* Digidesign Mbox 1 clock source switch (internal/spdif) */
598 
599 static int snd_mbox1_switch_get(struct snd_kcontrol *kctl,
600 				struct snd_ctl_elem_value *ucontrol)
601 {
602 	ucontrol->value.enumerated.item[0] = kctl->private_value;
603 	return 0;
604 }
605 
606 static int snd_mbox1_switch_update(struct usb_mixer_interface *mixer, int val)
607 {
608 	struct snd_usb_audio *chip = mixer->chip;
609 	int err;
610 	unsigned char buff[3];
611 
612 	err = snd_usb_lock_shutdown(chip);
613 	if (err < 0)
614 		return err;
615 
616 	/* Prepare for magic command to toggle clock source */
617 	err = snd_usb_ctl_msg(chip->dev,
618 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
619 				USB_DIR_IN |
620 				USB_TYPE_CLASS |
621 				USB_RECIP_INTERFACE, 0x00, 0x500, buff, 1);
622 	if (err < 0)
623 		goto err;
624 	err = snd_usb_ctl_msg(chip->dev,
625 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
626 				USB_DIR_IN |
627 				USB_TYPE_CLASS |
628 				USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
629 	if (err < 0)
630 		goto err;
631 
632 	/* 2 possibilities:	Internal    -> send sample rate
633 	 *			S/PDIF sync -> send zeroes
634 	 * NB: Sample rate locked to 48kHz on purpose to
635 	 *     prevent user from resetting the sample rate
636 	 *     while S/PDIF sync is enabled and confusing
637 	 *     this configuration.
638 	 */
639 	if (val == 0) {
640 		buff[0] = 0x80;
641 		buff[1] = 0xbb;
642 		buff[2] = 0x00;
643 	} else {
644 		buff[0] = buff[1] = buff[2] = 0x00;
645 	}
646 
647 	/* Send the magic command to toggle the clock source */
648 	err = snd_usb_ctl_msg(chip->dev,
649 				usb_sndctrlpipe(chip->dev, 0), 0x1,
650 				USB_TYPE_CLASS |
651 				USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
652 	if (err < 0)
653 		goto err;
654 	err = snd_usb_ctl_msg(chip->dev,
655 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
656 				USB_DIR_IN |
657 				USB_TYPE_CLASS |
658 				USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
659 	if (err < 0)
660 		goto err;
661 	err = snd_usb_ctl_msg(chip->dev,
662 				usb_rcvctrlpipe(chip->dev, 0), 0x81,
663 				USB_DIR_IN |
664 				USB_TYPE_CLASS |
665 				USB_RECIP_ENDPOINT, 0x100, 0x2, buff, 3);
666 	if (err < 0)
667 		goto err;
668 
669 err:
670 	snd_usb_unlock_shutdown(chip);
671 	return err;
672 }
673 
674 static int snd_mbox1_switch_put(struct snd_kcontrol *kctl,
675 				struct snd_ctl_elem_value *ucontrol)
676 {
677 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
678 	struct usb_mixer_interface *mixer = list->mixer;
679 	int err;
680 	bool cur_val, new_val;
681 
682 	cur_val = kctl->private_value;
683 	new_val = ucontrol->value.enumerated.item[0];
684 	if (cur_val == new_val)
685 		return 0;
686 
687 	kctl->private_value = new_val;
688 	err = snd_mbox1_switch_update(mixer, new_val);
689 	return err < 0 ? err : 1;
690 }
691 
692 static int snd_mbox1_switch_info(struct snd_kcontrol *kcontrol,
693 				 struct snd_ctl_elem_info *uinfo)
694 {
695 	static const char *const texts[2] = {
696 		"Internal",
697 		"S/PDIF"
698 	};
699 
700 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
701 }
702 
703 static int snd_mbox1_switch_resume(struct usb_mixer_elem_list *list)
704 {
705 	return snd_mbox1_switch_update(list->mixer, list->kctl->private_value);
706 }
707 
708 static const struct snd_kcontrol_new snd_mbox1_switch = {
709 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
710 	.name = "Clock Source",
711 	.index = 0,
712 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
713 	.info = snd_mbox1_switch_info,
714 	.get = snd_mbox1_switch_get,
715 	.put = snd_mbox1_switch_put,
716 	.private_value = 0
717 };
718 
719 static int snd_mbox1_create_sync_switch(struct usb_mixer_interface *mixer)
720 {
721 	return add_single_ctl_with_resume(mixer, 0,
722 					  snd_mbox1_switch_resume,
723 					  &snd_mbox1_switch, NULL);
724 }
725 
726 /* Native Instruments device quirks */
727 
728 #define _MAKE_NI_CONTROL(bRequest,wIndex) ((bRequest) << 16 | (wIndex))
729 
730 static int snd_ni_control_init_val(struct usb_mixer_interface *mixer,
731 				   struct snd_kcontrol *kctl)
732 {
733 	struct usb_device *dev = mixer->chip->dev;
734 	unsigned int pval = kctl->private_value;
735 	u8 value;
736 	int err;
737 
738 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
739 			      (pval >> 16) & 0xff,
740 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
741 			      0, pval & 0xffff, &value, 1);
742 	if (err < 0) {
743 		dev_err(&dev->dev,
744 			"unable to issue vendor read request (ret = %d)", err);
745 		return err;
746 	}
747 
748 	kctl->private_value |= ((unsigned int)value << 24);
749 	return 0;
750 }
751 
752 static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
753 					     struct snd_ctl_elem_value *ucontrol)
754 {
755 	ucontrol->value.integer.value[0] = kcontrol->private_value >> 24;
756 	return 0;
757 }
758 
759 static int snd_ni_update_cur_val(struct usb_mixer_elem_list *list)
760 {
761 	struct snd_usb_audio *chip = list->mixer->chip;
762 	unsigned int pval = list->kctl->private_value;
763 	int err;
764 
765 	err = snd_usb_lock_shutdown(chip);
766 	if (err < 0)
767 		return err;
768 	err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
769 			      (pval >> 16) & 0xff,
770 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
771 			      pval >> 24, pval & 0xffff, NULL, 0, 1000);
772 	snd_usb_unlock_shutdown(chip);
773 	return err;
774 }
775 
776 static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
777 					     struct snd_ctl_elem_value *ucontrol)
778 {
779 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
780 	u8 oldval = (kcontrol->private_value >> 24) & 0xff;
781 	u8 newval = ucontrol->value.integer.value[0];
782 	int err;
783 
784 	if (oldval == newval)
785 		return 0;
786 
787 	kcontrol->private_value &= ~(0xff << 24);
788 	kcontrol->private_value |= (unsigned int)newval << 24;
789 	err = snd_ni_update_cur_val(list);
790 	return err < 0 ? err : 1;
791 }
792 
793 static const struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
794 	{
795 		.name = "Direct Thru Channel A",
796 		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
797 	},
798 	{
799 		.name = "Direct Thru Channel B",
800 		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
801 	},
802 	{
803 		.name = "Phono Input Channel A",
804 		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
805 	},
806 	{
807 		.name = "Phono Input Channel B",
808 		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
809 	},
810 };
811 
812 static const struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
813 	{
814 		.name = "Direct Thru Channel A",
815 		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
816 	},
817 	{
818 		.name = "Direct Thru Channel B",
819 		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
820 	},
821 	{
822 		.name = "Direct Thru Channel C",
823 		.private_value = _MAKE_NI_CONTROL(0x01, 0x07),
824 	},
825 	{
826 		.name = "Direct Thru Channel D",
827 		.private_value = _MAKE_NI_CONTROL(0x01, 0x09),
828 	},
829 	{
830 		.name = "Phono Input Channel A",
831 		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
832 	},
833 	{
834 		.name = "Phono Input Channel B",
835 		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
836 	},
837 	{
838 		.name = "Phono Input Channel C",
839 		.private_value = _MAKE_NI_CONTROL(0x02, 0x07),
840 	},
841 	{
842 		.name = "Phono Input Channel D",
843 		.private_value = _MAKE_NI_CONTROL(0x02, 0x09),
844 	},
845 };
846 
847 static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
848 					      const struct snd_kcontrol_new *kc,
849 					      unsigned int count)
850 {
851 	int i, err = 0;
852 	struct snd_kcontrol_new template = {
853 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
854 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
855 		.get = snd_nativeinstruments_control_get,
856 		.put = snd_nativeinstruments_control_put,
857 		.info = snd_ctl_boolean_mono_info,
858 	};
859 
860 	for (i = 0; i < count; i++) {
861 		struct usb_mixer_elem_list *list;
862 
863 		template.name = kc[i].name;
864 		template.private_value = kc[i].private_value;
865 
866 		err = add_single_ctl_with_resume(mixer, 0,
867 						 snd_ni_update_cur_val,
868 						 &template, &list);
869 		if (err < 0)
870 			break;
871 		snd_ni_control_init_val(mixer, list->kctl);
872 	}
873 
874 	return err;
875 }
876 
877 /* M-Audio FastTrack Ultra quirks */
878 /* FTU Effect switch (also used by C400/C600) */
879 static int snd_ftu_eff_switch_info(struct snd_kcontrol *kcontrol,
880 					struct snd_ctl_elem_info *uinfo)
881 {
882 	static const char *const texts[8] = {
883 		"Room 1", "Room 2", "Room 3", "Hall 1",
884 		"Hall 2", "Plate", "Delay", "Echo"
885 	};
886 
887 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
888 }
889 
890 static int snd_ftu_eff_switch_init(struct usb_mixer_interface *mixer,
891 				   struct snd_kcontrol *kctl)
892 {
893 	struct usb_device *dev = mixer->chip->dev;
894 	unsigned int pval = kctl->private_value;
895 	int err;
896 	unsigned char value[2];
897 
898 	value[0] = 0x00;
899 	value[1] = 0x00;
900 
901 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
902 			      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
903 			      pval & 0xff00,
904 			      snd_usb_ctrl_intf(mixer->chip) | ((pval & 0xff) << 8),
905 			      value, 2);
906 	if (err < 0)
907 		return err;
908 
909 	kctl->private_value |= (unsigned int)value[0] << 24;
910 	return 0;
911 }
912 
913 static int snd_ftu_eff_switch_get(struct snd_kcontrol *kctl,
914 					struct snd_ctl_elem_value *ucontrol)
915 {
916 	ucontrol->value.enumerated.item[0] = kctl->private_value >> 24;
917 	return 0;
918 }
919 
920 static int snd_ftu_eff_switch_update(struct usb_mixer_elem_list *list)
921 {
922 	struct snd_usb_audio *chip = list->mixer->chip;
923 	unsigned int pval = list->kctl->private_value;
924 	unsigned char value[2];
925 	int err;
926 
927 	value[0] = pval >> 24;
928 	value[1] = 0;
929 
930 	err = snd_usb_lock_shutdown(chip);
931 	if (err < 0)
932 		return err;
933 	err = snd_usb_ctl_msg(chip->dev,
934 			      usb_sndctrlpipe(chip->dev, 0),
935 			      UAC_SET_CUR,
936 			      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
937 			      pval & 0xff00,
938 			      snd_usb_ctrl_intf(chip) | ((pval & 0xff) << 8),
939 			      value, 2);
940 	snd_usb_unlock_shutdown(chip);
941 	return err;
942 }
943 
944 static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl,
945 					struct snd_ctl_elem_value *ucontrol)
946 {
947 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
948 	unsigned int pval = list->kctl->private_value;
949 	int cur_val, err, new_val;
950 
951 	cur_val = pval >> 24;
952 	new_val = ucontrol->value.enumerated.item[0];
953 	if (cur_val == new_val)
954 		return 0;
955 
956 	kctl->private_value &= ~(0xff << 24);
957 	kctl->private_value |= new_val << 24;
958 	err = snd_ftu_eff_switch_update(list);
959 	return err < 0 ? err : 1;
960 }
961 
962 static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
963 	int validx, int bUnitID)
964 {
965 	static struct snd_kcontrol_new template = {
966 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
967 		.name = "Effect Program Switch",
968 		.index = 0,
969 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
970 		.info = snd_ftu_eff_switch_info,
971 		.get = snd_ftu_eff_switch_get,
972 		.put = snd_ftu_eff_switch_put
973 	};
974 	struct usb_mixer_elem_list *list;
975 	int err;
976 
977 	err = add_single_ctl_with_resume(mixer, bUnitID,
978 					 snd_ftu_eff_switch_update,
979 					 &template, &list);
980 	if (err < 0)
981 		return err;
982 	list->kctl->private_value = (validx << 8) | bUnitID;
983 	snd_ftu_eff_switch_init(mixer, list->kctl);
984 	return 0;
985 }
986 
987 /* Create volume controls for FTU devices*/
988 static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
989 {
990 	char name[64];
991 	unsigned int control, cmask;
992 	int in, out, err;
993 
994 	const unsigned int id = 5;
995 	const int val_type = USB_MIXER_S16;
996 
997 	for (out = 0; out < 8; out++) {
998 		control = out + 1;
999 		for (in = 0; in < 8; in++) {
1000 			cmask = 1 << in;
1001 			snprintf(name, sizeof(name),
1002 				"AIn%d - Out%d Capture Volume",
1003 				in  + 1, out + 1);
1004 			err = snd_create_std_mono_ctl(mixer, id, control,
1005 							cmask, val_type, name,
1006 							&snd_usb_mixer_vol_tlv);
1007 			if (err < 0)
1008 				return err;
1009 		}
1010 		for (in = 8; in < 16; in++) {
1011 			cmask = 1 << in;
1012 			snprintf(name, sizeof(name),
1013 				"DIn%d - Out%d Playback Volume",
1014 				in - 7, out + 1);
1015 			err = snd_create_std_mono_ctl(mixer, id, control,
1016 							cmask, val_type, name,
1017 							&snd_usb_mixer_vol_tlv);
1018 			if (err < 0)
1019 				return err;
1020 		}
1021 	}
1022 
1023 	return 0;
1024 }
1025 
1026 /* This control needs a volume quirk, see mixer.c */
1027 static int snd_ftu_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1028 {
1029 	static const char name[] = "Effect Volume";
1030 	const unsigned int id = 6;
1031 	const int val_type = USB_MIXER_U8;
1032 	const unsigned int control = 2;
1033 	const unsigned int cmask = 0;
1034 
1035 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1036 					name, snd_usb_mixer_vol_tlv);
1037 }
1038 
1039 /* This control needs a volume quirk, see mixer.c */
1040 static int snd_ftu_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1041 {
1042 	static const char name[] = "Effect Duration";
1043 	const unsigned int id = 6;
1044 	const int val_type = USB_MIXER_S16;
1045 	const unsigned int control = 3;
1046 	const unsigned int cmask = 0;
1047 
1048 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1049 					name, snd_usb_mixer_vol_tlv);
1050 }
1051 
1052 /* This control needs a volume quirk, see mixer.c */
1053 static int snd_ftu_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1054 {
1055 	static const char name[] = "Effect Feedback Volume";
1056 	const unsigned int id = 6;
1057 	const int val_type = USB_MIXER_U8;
1058 	const unsigned int control = 4;
1059 	const unsigned int cmask = 0;
1060 
1061 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1062 					name, NULL);
1063 }
1064 
1065 static int snd_ftu_create_effect_return_ctls(struct usb_mixer_interface *mixer)
1066 {
1067 	unsigned int cmask;
1068 	int err, ch;
1069 	char name[48];
1070 
1071 	const unsigned int id = 7;
1072 	const int val_type = USB_MIXER_S16;
1073 	const unsigned int control = 7;
1074 
1075 	for (ch = 0; ch < 4; ++ch) {
1076 		cmask = 1 << ch;
1077 		snprintf(name, sizeof(name),
1078 			"Effect Return %d Volume", ch + 1);
1079 		err = snd_create_std_mono_ctl(mixer, id, control,
1080 						cmask, val_type, name,
1081 						snd_usb_mixer_vol_tlv);
1082 		if (err < 0)
1083 			return err;
1084 	}
1085 
1086 	return 0;
1087 }
1088 
1089 static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
1090 {
1091 	unsigned int  cmask;
1092 	int err, ch;
1093 	char name[48];
1094 
1095 	const unsigned int id = 5;
1096 	const int val_type = USB_MIXER_S16;
1097 	const unsigned int control = 9;
1098 
1099 	for (ch = 0; ch < 8; ++ch) {
1100 		cmask = 1 << ch;
1101 		snprintf(name, sizeof(name),
1102 			"Effect Send AIn%d Volume", ch + 1);
1103 		err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1104 						val_type, name,
1105 						snd_usb_mixer_vol_tlv);
1106 		if (err < 0)
1107 			return err;
1108 	}
1109 	for (ch = 8; ch < 16; ++ch) {
1110 		cmask = 1 << ch;
1111 		snprintf(name, sizeof(name),
1112 			"Effect Send DIn%d Volume", ch - 7);
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 	return 0;
1120 }
1121 
1122 static int snd_ftu_create_mixer(struct usb_mixer_interface *mixer)
1123 {
1124 	int err;
1125 
1126 	err = snd_ftu_create_volume_ctls(mixer);
1127 	if (err < 0)
1128 		return err;
1129 
1130 	err = snd_ftu_create_effect_switch(mixer, 1, 6);
1131 	if (err < 0)
1132 		return err;
1133 
1134 	err = snd_ftu_create_effect_volume_ctl(mixer);
1135 	if (err < 0)
1136 		return err;
1137 
1138 	err = snd_ftu_create_effect_duration_ctl(mixer);
1139 	if (err < 0)
1140 		return err;
1141 
1142 	err = snd_ftu_create_effect_feedback_ctl(mixer);
1143 	if (err < 0)
1144 		return err;
1145 
1146 	err = snd_ftu_create_effect_return_ctls(mixer);
1147 	if (err < 0)
1148 		return err;
1149 
1150 	err = snd_ftu_create_effect_send_ctls(mixer);
1151 	if (err < 0)
1152 		return err;
1153 
1154 	return 0;
1155 }
1156 
1157 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
1158 			       unsigned char samplerate_id)
1159 {
1160 	struct usb_mixer_interface *mixer;
1161 	struct usb_mixer_elem_info *cval;
1162 	int unitid = 12; /* SampleRate ExtensionUnit ID */
1163 
1164 	list_for_each_entry(mixer, &chip->mixer_list, list) {
1165 		if (mixer->id_elems[unitid]) {
1166 			cval = mixer_elem_list_to_info(mixer->id_elems[unitid]);
1167 			snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
1168 						    cval->control << 8,
1169 						    samplerate_id);
1170 			snd_usb_mixer_notify_id(mixer, unitid);
1171 			break;
1172 		}
1173 	}
1174 }
1175 
1176 /* M-Audio Fast Track C400/C600 */
1177 /* C400/C600 volume controls, this control needs a volume quirk, see mixer.c */
1178 static int snd_c400_create_vol_ctls(struct usb_mixer_interface *mixer)
1179 {
1180 	char name[64];
1181 	unsigned int cmask, offset;
1182 	int out, chan, err;
1183 	int num_outs = 0;
1184 	int num_ins = 0;
1185 
1186 	const unsigned int id = 0x40;
1187 	const int val_type = USB_MIXER_S16;
1188 	const int control = 1;
1189 
1190 	switch (mixer->chip->usb_id) {
1191 	case USB_ID(0x0763, 0x2030):
1192 		num_outs = 6;
1193 		num_ins = 4;
1194 		break;
1195 	case USB_ID(0x0763, 0x2031):
1196 		num_outs = 8;
1197 		num_ins = 6;
1198 		break;
1199 	}
1200 
1201 	for (chan = 0; chan < num_outs + num_ins; chan++) {
1202 		for (out = 0; out < num_outs; out++) {
1203 			if (chan < num_outs) {
1204 				snprintf(name, sizeof(name),
1205 					"PCM%d-Out%d Playback Volume",
1206 					chan + 1, out + 1);
1207 			} else {
1208 				snprintf(name, sizeof(name),
1209 					"In%d-Out%d Playback Volume",
1210 					chan - num_outs + 1, out + 1);
1211 			}
1212 
1213 			cmask = (out == 0) ? 0 : 1 << (out - 1);
1214 			offset = chan * num_outs;
1215 			err = snd_create_std_mono_ctl_offset(mixer, id, control,
1216 						cmask, val_type, offset, name,
1217 						&snd_usb_mixer_vol_tlv);
1218 			if (err < 0)
1219 				return err;
1220 		}
1221 	}
1222 
1223 	return 0;
1224 }
1225 
1226 /* This control needs a volume quirk, see mixer.c */
1227 static int snd_c400_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1228 {
1229 	static const char name[] = "Effect Volume";
1230 	const unsigned int id = 0x43;
1231 	const int val_type = USB_MIXER_U8;
1232 	const unsigned int control = 3;
1233 	const unsigned int cmask = 0;
1234 
1235 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1236 					name, snd_usb_mixer_vol_tlv);
1237 }
1238 
1239 /* This control needs a volume quirk, see mixer.c */
1240 static int snd_c400_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1241 {
1242 	static const char name[] = "Effect Duration";
1243 	const unsigned int id = 0x43;
1244 	const int val_type = USB_MIXER_S16;
1245 	const unsigned int control = 4;
1246 	const unsigned int cmask = 0;
1247 
1248 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1249 					name, snd_usb_mixer_vol_tlv);
1250 }
1251 
1252 /* This control needs a volume quirk, see mixer.c */
1253 static int snd_c400_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1254 {
1255 	static const char name[] = "Effect Feedback Volume";
1256 	const unsigned int id = 0x43;
1257 	const int val_type = USB_MIXER_U8;
1258 	const unsigned int control = 5;
1259 	const unsigned int cmask = 0;
1260 
1261 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1262 					name, NULL);
1263 }
1264 
1265 static int snd_c400_create_effect_vol_ctls(struct usb_mixer_interface *mixer)
1266 {
1267 	char name[64];
1268 	unsigned int cmask;
1269 	int chan, err;
1270 	int num_outs = 0;
1271 	int num_ins = 0;
1272 
1273 	const unsigned int id = 0x42;
1274 	const int val_type = USB_MIXER_S16;
1275 	const int control = 1;
1276 
1277 	switch (mixer->chip->usb_id) {
1278 	case USB_ID(0x0763, 0x2030):
1279 		num_outs = 6;
1280 		num_ins = 4;
1281 		break;
1282 	case USB_ID(0x0763, 0x2031):
1283 		num_outs = 8;
1284 		num_ins = 6;
1285 		break;
1286 	}
1287 
1288 	for (chan = 0; chan < num_outs + num_ins; chan++) {
1289 		if (chan < num_outs) {
1290 			snprintf(name, sizeof(name),
1291 				"Effect Send DOut%d",
1292 				chan + 1);
1293 		} else {
1294 			snprintf(name, sizeof(name),
1295 				"Effect Send AIn%d",
1296 				chan - num_outs + 1);
1297 		}
1298 
1299 		cmask = (chan == 0) ? 0 : 1 << (chan - 1);
1300 		err = snd_create_std_mono_ctl(mixer, id, control,
1301 						cmask, val_type, name,
1302 						&snd_usb_mixer_vol_tlv);
1303 		if (err < 0)
1304 			return err;
1305 	}
1306 
1307 	return 0;
1308 }
1309 
1310 static int snd_c400_create_effect_ret_vol_ctls(struct usb_mixer_interface *mixer)
1311 {
1312 	char name[64];
1313 	unsigned int cmask;
1314 	int chan, err;
1315 	int num_outs = 0;
1316 	int offset = 0;
1317 
1318 	const unsigned int id = 0x40;
1319 	const int val_type = USB_MIXER_S16;
1320 	const int control = 1;
1321 
1322 	switch (mixer->chip->usb_id) {
1323 	case USB_ID(0x0763, 0x2030):
1324 		num_outs = 6;
1325 		offset = 0x3c;
1326 		/* { 0x3c, 0x43, 0x3e, 0x45, 0x40, 0x47 } */
1327 		break;
1328 	case USB_ID(0x0763, 0x2031):
1329 		num_outs = 8;
1330 		offset = 0x70;
1331 		/* { 0x70, 0x79, 0x72, 0x7b, 0x74, 0x7d, 0x76, 0x7f } */
1332 		break;
1333 	}
1334 
1335 	for (chan = 0; chan < num_outs; chan++) {
1336 		snprintf(name, sizeof(name),
1337 			"Effect Return %d",
1338 			chan + 1);
1339 
1340 		cmask = (chan == 0) ? 0 :
1341 			1 << (chan + (chan % 2) * num_outs - 1);
1342 		err = snd_create_std_mono_ctl_offset(mixer, id, control,
1343 						cmask, val_type, offset, name,
1344 						&snd_usb_mixer_vol_tlv);
1345 		if (err < 0)
1346 			return err;
1347 	}
1348 
1349 	return 0;
1350 }
1351 
1352 static int snd_c400_create_mixer(struct usb_mixer_interface *mixer)
1353 {
1354 	int err;
1355 
1356 	err = snd_c400_create_vol_ctls(mixer);
1357 	if (err < 0)
1358 		return err;
1359 
1360 	err = snd_c400_create_effect_vol_ctls(mixer);
1361 	if (err < 0)
1362 		return err;
1363 
1364 	err = snd_c400_create_effect_ret_vol_ctls(mixer);
1365 	if (err < 0)
1366 		return err;
1367 
1368 	err = snd_ftu_create_effect_switch(mixer, 2, 0x43);
1369 	if (err < 0)
1370 		return err;
1371 
1372 	err = snd_c400_create_effect_volume_ctl(mixer);
1373 	if (err < 0)
1374 		return err;
1375 
1376 	err = snd_c400_create_effect_duration_ctl(mixer);
1377 	if (err < 0)
1378 		return err;
1379 
1380 	err = snd_c400_create_effect_feedback_ctl(mixer);
1381 	if (err < 0)
1382 		return err;
1383 
1384 	return 0;
1385 }
1386 
1387 /*
1388  * The mixer units for Ebox-44 are corrupt, and even where they
1389  * are valid they presents mono controls as L and R channels of
1390  * stereo. So we provide a good mixer here.
1391  */
1392 static const struct std_mono_table ebox44_table[] = {
1393 	{
1394 		.unitid = 4,
1395 		.control = 1,
1396 		.cmask = 0x0,
1397 		.val_type = USB_MIXER_INV_BOOLEAN,
1398 		.name = "Headphone Playback Switch"
1399 	},
1400 	{
1401 		.unitid = 4,
1402 		.control = 2,
1403 		.cmask = 0x1,
1404 		.val_type = USB_MIXER_S16,
1405 		.name = "Headphone A Mix Playback Volume"
1406 	},
1407 	{
1408 		.unitid = 4,
1409 		.control = 2,
1410 		.cmask = 0x2,
1411 		.val_type = USB_MIXER_S16,
1412 		.name = "Headphone B Mix Playback Volume"
1413 	},
1414 
1415 	{
1416 		.unitid = 7,
1417 		.control = 1,
1418 		.cmask = 0x0,
1419 		.val_type = USB_MIXER_INV_BOOLEAN,
1420 		.name = "Output Playback Switch"
1421 	},
1422 	{
1423 		.unitid = 7,
1424 		.control = 2,
1425 		.cmask = 0x1,
1426 		.val_type = USB_MIXER_S16,
1427 		.name = "Output A Playback Volume"
1428 	},
1429 	{
1430 		.unitid = 7,
1431 		.control = 2,
1432 		.cmask = 0x2,
1433 		.val_type = USB_MIXER_S16,
1434 		.name = "Output B Playback Volume"
1435 	},
1436 
1437 	{
1438 		.unitid = 10,
1439 		.control = 1,
1440 		.cmask = 0x0,
1441 		.val_type = USB_MIXER_INV_BOOLEAN,
1442 		.name = "Input Capture Switch"
1443 	},
1444 	{
1445 		.unitid = 10,
1446 		.control = 2,
1447 		.cmask = 0x1,
1448 		.val_type = USB_MIXER_S16,
1449 		.name = "Input A Capture Volume"
1450 	},
1451 	{
1452 		.unitid = 10,
1453 		.control = 2,
1454 		.cmask = 0x2,
1455 		.val_type = USB_MIXER_S16,
1456 		.name = "Input B Capture Volume"
1457 	},
1458 
1459 	{}
1460 };
1461 
1462 /* Audio Advantage Micro II findings:
1463  *
1464  * Mapping spdif AES bits to vendor register.bit:
1465  * AES0: [0 0 0 0 2.3 2.2 2.1 2.0] - default 0x00
1466  * AES1: [3.3 3.2.3.1.3.0 2.7 2.6 2.5 2.4] - default: 0x01
1467  * AES2: [0 0 0 0 0 0 0 0]
1468  * AES3: [0 0 0 0 0 0 x 0] - 'x' bit is set basing on standard usb request
1469  *                           (UAC_EP_CS_ATTR_SAMPLE_RATE) for Audio Devices
1470  *
1471  * power on values:
1472  * r2: 0x10
1473  * r3: 0x20 (b7 is zeroed just before playback (except IEC61937) and set
1474  *           just after it to 0xa0, presumably it disables/mutes some analog
1475  *           parts when there is no audio.)
1476  * r9: 0x28
1477  *
1478  * Optical transmitter on/off:
1479  * vendor register.bit: 9.1
1480  * 0 - on (0x28 register value)
1481  * 1 - off (0x2a register value)
1482  *
1483  */
1484 static int snd_microii_spdif_info(struct snd_kcontrol *kcontrol,
1485 	struct snd_ctl_elem_info *uinfo)
1486 {
1487 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1488 	uinfo->count = 1;
1489 	return 0;
1490 }
1491 
1492 static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
1493 	struct snd_ctl_elem_value *ucontrol)
1494 {
1495 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1496 	struct snd_usb_audio *chip = list->mixer->chip;
1497 	int err;
1498 	struct usb_interface *iface;
1499 	struct usb_host_interface *alts;
1500 	unsigned int ep;
1501 	unsigned char data[3];
1502 	int rate;
1503 
1504 	err = snd_usb_lock_shutdown(chip);
1505 	if (err < 0)
1506 		return err;
1507 
1508 	ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff;
1509 	ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff;
1510 	ucontrol->value.iec958.status[2] = 0x00;
1511 
1512 	/* use known values for that card: interface#1 altsetting#1 */
1513 	iface = usb_ifnum_to_if(chip->dev, 1);
1514 	if (!iface || iface->num_altsetting < 2) {
1515 		err = -EINVAL;
1516 		goto end;
1517 	}
1518 	alts = &iface->altsetting[1];
1519 	if (get_iface_desc(alts)->bNumEndpoints < 1) {
1520 		err = -EINVAL;
1521 		goto end;
1522 	}
1523 	ep = get_endpoint(alts, 0)->bEndpointAddress;
1524 
1525 	err = snd_usb_ctl_msg(chip->dev,
1526 			usb_rcvctrlpipe(chip->dev, 0),
1527 			UAC_GET_CUR,
1528 			USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN,
1529 			UAC_EP_CS_ATTR_SAMPLE_RATE << 8,
1530 			ep,
1531 			data,
1532 			sizeof(data));
1533 	if (err < 0)
1534 		goto end;
1535 
1536 	rate = data[0] | (data[1] << 8) | (data[2] << 16);
1537 	ucontrol->value.iec958.status[3] = (rate == 48000) ?
1538 			IEC958_AES3_CON_FS_48000 : IEC958_AES3_CON_FS_44100;
1539 
1540 	err = 0;
1541  end:
1542 	snd_usb_unlock_shutdown(chip);
1543 	return err;
1544 }
1545 
1546 static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list)
1547 {
1548 	struct snd_usb_audio *chip = list->mixer->chip;
1549 	unsigned int pval = list->kctl->private_value;
1550 	u8 reg;
1551 	int err;
1552 
1553 	err = snd_usb_lock_shutdown(chip);
1554 	if (err < 0)
1555 		return err;
1556 
1557 	reg = ((pval >> 4) & 0xf0) | (pval & 0x0f);
1558 	err = snd_usb_ctl_msg(chip->dev,
1559 			usb_sndctrlpipe(chip->dev, 0),
1560 			UAC_SET_CUR,
1561 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1562 			reg,
1563 			2,
1564 			NULL,
1565 			0);
1566 	if (err < 0)
1567 		goto end;
1568 
1569 	reg = (pval & IEC958_AES0_NONAUDIO) ? 0xa0 : 0x20;
1570 	reg |= (pval >> 12) & 0x0f;
1571 	err = snd_usb_ctl_msg(chip->dev,
1572 			usb_sndctrlpipe(chip->dev, 0),
1573 			UAC_SET_CUR,
1574 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1575 			reg,
1576 			3,
1577 			NULL,
1578 			0);
1579 	if (err < 0)
1580 		goto end;
1581 
1582  end:
1583 	snd_usb_unlock_shutdown(chip);
1584 	return err;
1585 }
1586 
1587 static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
1588 	struct snd_ctl_elem_value *ucontrol)
1589 {
1590 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1591 	unsigned int pval, pval_old;
1592 	int err;
1593 
1594 	pval = pval_old = kcontrol->private_value;
1595 	pval &= 0xfffff0f0;
1596 	pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
1597 	pval |= (ucontrol->value.iec958.status[0] & 0x0f);
1598 
1599 	pval &= 0xffff0fff;
1600 	pval |= (ucontrol->value.iec958.status[1] & 0xf0) << 8;
1601 
1602 	/* The frequency bits in AES3 cannot be set via register access. */
1603 
1604 	/* Silently ignore any bits from the request that cannot be set. */
1605 
1606 	if (pval == pval_old)
1607 		return 0;
1608 
1609 	kcontrol->private_value = pval;
1610 	err = snd_microii_spdif_default_update(list);
1611 	return err < 0 ? err : 1;
1612 }
1613 
1614 static int snd_microii_spdif_mask_get(struct snd_kcontrol *kcontrol,
1615 	struct snd_ctl_elem_value *ucontrol)
1616 {
1617 	ucontrol->value.iec958.status[0] = 0x0f;
1618 	ucontrol->value.iec958.status[1] = 0xff;
1619 	ucontrol->value.iec958.status[2] = 0x00;
1620 	ucontrol->value.iec958.status[3] = 0x00;
1621 
1622 	return 0;
1623 }
1624 
1625 static int snd_microii_spdif_switch_get(struct snd_kcontrol *kcontrol,
1626 	struct snd_ctl_elem_value *ucontrol)
1627 {
1628 	ucontrol->value.integer.value[0] = !(kcontrol->private_value & 0x02);
1629 
1630 	return 0;
1631 }
1632 
1633 static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list)
1634 {
1635 	struct snd_usb_audio *chip = list->mixer->chip;
1636 	u8 reg = list->kctl->private_value;
1637 	int err;
1638 
1639 	err = snd_usb_lock_shutdown(chip);
1640 	if (err < 0)
1641 		return err;
1642 
1643 	err = snd_usb_ctl_msg(chip->dev,
1644 			usb_sndctrlpipe(chip->dev, 0),
1645 			UAC_SET_CUR,
1646 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1647 			reg,
1648 			9,
1649 			NULL,
1650 			0);
1651 
1652 	snd_usb_unlock_shutdown(chip);
1653 	return err;
1654 }
1655 
1656 static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol,
1657 	struct snd_ctl_elem_value *ucontrol)
1658 {
1659 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1660 	u8 reg;
1661 	int err;
1662 
1663 	reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a;
1664 	if (reg != list->kctl->private_value)
1665 		return 0;
1666 
1667 	kcontrol->private_value = reg;
1668 	err = snd_microii_spdif_switch_update(list);
1669 	return err < 0 ? err : 1;
1670 }
1671 
1672 static const struct snd_kcontrol_new snd_microii_mixer_spdif[] = {
1673 	{
1674 		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1675 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
1676 		.info =     snd_microii_spdif_info,
1677 		.get =      snd_microii_spdif_default_get,
1678 		.put =      snd_microii_spdif_default_put,
1679 		.private_value = 0x00000100UL,/* reset value */
1680 	},
1681 	{
1682 		.access =   SNDRV_CTL_ELEM_ACCESS_READ,
1683 		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1684 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
1685 		.info =     snd_microii_spdif_info,
1686 		.get =      snd_microii_spdif_mask_get,
1687 	},
1688 	{
1689 		.iface =    SNDRV_CTL_ELEM_IFACE_MIXER,
1690 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
1691 		.info =     snd_ctl_boolean_mono_info,
1692 		.get =      snd_microii_spdif_switch_get,
1693 		.put =      snd_microii_spdif_switch_put,
1694 		.private_value = 0x00000028UL,/* reset value */
1695 	}
1696 };
1697 
1698 static int snd_microii_controls_create(struct usb_mixer_interface *mixer)
1699 {
1700 	int err, i;
1701 	static const usb_mixer_elem_resume_func_t resume_funcs[] = {
1702 		snd_microii_spdif_default_update,
1703 		NULL,
1704 		snd_microii_spdif_switch_update
1705 	};
1706 
1707 	for (i = 0; i < ARRAY_SIZE(snd_microii_mixer_spdif); ++i) {
1708 		err = add_single_ctl_with_resume(mixer, 0,
1709 						 resume_funcs[i],
1710 						 &snd_microii_mixer_spdif[i],
1711 						 NULL);
1712 		if (err < 0)
1713 			return err;
1714 	}
1715 
1716 	return 0;
1717 }
1718 
1719 /* Creative Sound Blaster E1 */
1720 
1721 static int snd_soundblaster_e1_switch_get(struct snd_kcontrol *kcontrol,
1722 					  struct snd_ctl_elem_value *ucontrol)
1723 {
1724 	ucontrol->value.integer.value[0] = kcontrol->private_value;
1725 	return 0;
1726 }
1727 
1728 static int snd_soundblaster_e1_switch_update(struct usb_mixer_interface *mixer,
1729 					     unsigned char state)
1730 {
1731 	struct snd_usb_audio *chip = mixer->chip;
1732 	int err;
1733 	unsigned char buff[2];
1734 
1735 	buff[0] = 0x02;
1736 	buff[1] = state ? 0x02 : 0x00;
1737 
1738 	err = snd_usb_lock_shutdown(chip);
1739 	if (err < 0)
1740 		return err;
1741 	err = snd_usb_ctl_msg(chip->dev,
1742 			usb_sndctrlpipe(chip->dev, 0), HID_REQ_SET_REPORT,
1743 			USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
1744 			0x0202, 3, buff, 2);
1745 	snd_usb_unlock_shutdown(chip);
1746 	return err;
1747 }
1748 
1749 static int snd_soundblaster_e1_switch_put(struct snd_kcontrol *kcontrol,
1750 					  struct snd_ctl_elem_value *ucontrol)
1751 {
1752 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1753 	unsigned char value = !!ucontrol->value.integer.value[0];
1754 	int err;
1755 
1756 	if (kcontrol->private_value == value)
1757 		return 0;
1758 	kcontrol->private_value = value;
1759 	err = snd_soundblaster_e1_switch_update(list->mixer, value);
1760 	return err < 0 ? err : 1;
1761 }
1762 
1763 static int snd_soundblaster_e1_switch_resume(struct usb_mixer_elem_list *list)
1764 {
1765 	return snd_soundblaster_e1_switch_update(list->mixer,
1766 						 list->kctl->private_value);
1767 }
1768 
1769 static int snd_soundblaster_e1_switch_info(struct snd_kcontrol *kcontrol,
1770 					   struct snd_ctl_elem_info *uinfo)
1771 {
1772 	static const char *const texts[2] = {
1773 		"Mic", "Aux"
1774 	};
1775 
1776 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
1777 }
1778 
1779 static const struct snd_kcontrol_new snd_soundblaster_e1_input_switch = {
1780 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1781 	.name = "Input Source",
1782 	.info = snd_soundblaster_e1_switch_info,
1783 	.get = snd_soundblaster_e1_switch_get,
1784 	.put = snd_soundblaster_e1_switch_put,
1785 	.private_value = 0,
1786 };
1787 
1788 static int snd_soundblaster_e1_switch_create(struct usb_mixer_interface *mixer)
1789 {
1790 	return add_single_ctl_with_resume(mixer, 0,
1791 					  snd_soundblaster_e1_switch_resume,
1792 					  &snd_soundblaster_e1_input_switch,
1793 					  NULL);
1794 }
1795 
1796 static void dell_dock_init_vol(struct snd_usb_audio *chip, int ch, int id)
1797 {
1798 	u16 buf = 0;
1799 
1800 	snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
1801 			USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
1802 			ch, snd_usb_ctrl_intf(chip) | (id << 8),
1803 			&buf, 2);
1804 }
1805 
1806 static int dell_dock_mixer_init(struct usb_mixer_interface *mixer)
1807 {
1808 	/* fix to 0dB playback volumes */
1809 	dell_dock_init_vol(mixer->chip, 1, 16);
1810 	dell_dock_init_vol(mixer->chip, 2, 16);
1811 	dell_dock_init_vol(mixer->chip, 1, 19);
1812 	dell_dock_init_vol(mixer->chip, 2, 19);
1813 	return 0;
1814 }
1815 
1816 /* RME Class Compliant device quirks */
1817 
1818 #define SND_RME_GET_STATUS1			23
1819 #define SND_RME_GET_CURRENT_FREQ		17
1820 #define SND_RME_CLK_SYSTEM_SHIFT		16
1821 #define SND_RME_CLK_SYSTEM_MASK			0x1f
1822 #define SND_RME_CLK_AES_SHIFT			8
1823 #define SND_RME_CLK_SPDIF_SHIFT			12
1824 #define SND_RME_CLK_AES_SPDIF_MASK		0xf
1825 #define SND_RME_CLK_SYNC_SHIFT			6
1826 #define SND_RME_CLK_SYNC_MASK			0x3
1827 #define SND_RME_CLK_FREQMUL_SHIFT		18
1828 #define SND_RME_CLK_FREQMUL_MASK		0x7
1829 #define SND_RME_CLK_SYSTEM(x) \
1830 	((x >> SND_RME_CLK_SYSTEM_SHIFT) & SND_RME_CLK_SYSTEM_MASK)
1831 #define SND_RME_CLK_AES(x) \
1832 	((x >> SND_RME_CLK_AES_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
1833 #define SND_RME_CLK_SPDIF(x) \
1834 	((x >> SND_RME_CLK_SPDIF_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
1835 #define SND_RME_CLK_SYNC(x) \
1836 	((x >> SND_RME_CLK_SYNC_SHIFT) & SND_RME_CLK_SYNC_MASK)
1837 #define SND_RME_CLK_FREQMUL(x) \
1838 	((x >> SND_RME_CLK_FREQMUL_SHIFT) & SND_RME_CLK_FREQMUL_MASK)
1839 #define SND_RME_CLK_AES_LOCK			0x1
1840 #define SND_RME_CLK_AES_SYNC			0x4
1841 #define SND_RME_CLK_SPDIF_LOCK			0x2
1842 #define SND_RME_CLK_SPDIF_SYNC			0x8
1843 #define SND_RME_SPDIF_IF_SHIFT			4
1844 #define SND_RME_SPDIF_FORMAT_SHIFT		5
1845 #define SND_RME_BINARY_MASK			0x1
1846 #define SND_RME_SPDIF_IF(x) \
1847 	((x >> SND_RME_SPDIF_IF_SHIFT) & SND_RME_BINARY_MASK)
1848 #define SND_RME_SPDIF_FORMAT(x) \
1849 	((x >> SND_RME_SPDIF_FORMAT_SHIFT) & SND_RME_BINARY_MASK)
1850 
1851 static const u32 snd_rme_rate_table[] = {
1852 	32000, 44100, 48000, 50000,
1853 	64000, 88200, 96000, 100000,
1854 	128000, 176400, 192000, 200000,
1855 	256000,	352800, 384000, 400000,
1856 	512000, 705600, 768000, 800000
1857 };
1858 /* maximum number of items for AES and S/PDIF rates for above table */
1859 #define SND_RME_RATE_IDX_AES_SPDIF_NUM		12
1860 
1861 enum snd_rme_domain {
1862 	SND_RME_DOMAIN_SYSTEM,
1863 	SND_RME_DOMAIN_AES,
1864 	SND_RME_DOMAIN_SPDIF
1865 };
1866 
1867 enum snd_rme_clock_status {
1868 	SND_RME_CLOCK_NOLOCK,
1869 	SND_RME_CLOCK_LOCK,
1870 	SND_RME_CLOCK_SYNC
1871 };
1872 
1873 static int snd_rme_read_value(struct snd_usb_audio *chip,
1874 			      unsigned int item,
1875 			      u32 *value)
1876 {
1877 	struct usb_device *dev = chip->dev;
1878 	int err;
1879 
1880 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
1881 			      item,
1882 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1883 			      0, 0,
1884 			      value, sizeof(*value));
1885 	if (err < 0)
1886 		dev_err(&dev->dev,
1887 			"unable to issue vendor read request %d (ret = %d)",
1888 			item, err);
1889 	return err;
1890 }
1891 
1892 static int snd_rme_get_status1(struct snd_kcontrol *kcontrol,
1893 			       u32 *status1)
1894 {
1895 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1896 	struct snd_usb_audio *chip = list->mixer->chip;
1897 	int err;
1898 
1899 	err = snd_usb_lock_shutdown(chip);
1900 	if (err < 0)
1901 		return err;
1902 	err = snd_rme_read_value(chip, SND_RME_GET_STATUS1, status1);
1903 	snd_usb_unlock_shutdown(chip);
1904 	return err;
1905 }
1906 
1907 static int snd_rme_rate_get(struct snd_kcontrol *kcontrol,
1908 			    struct snd_ctl_elem_value *ucontrol)
1909 {
1910 	u32 status1;
1911 	u32 rate = 0;
1912 	int idx;
1913 	int err;
1914 
1915 	err = snd_rme_get_status1(kcontrol, &status1);
1916 	if (err < 0)
1917 		return err;
1918 	switch (kcontrol->private_value) {
1919 	case SND_RME_DOMAIN_SYSTEM:
1920 		idx = SND_RME_CLK_SYSTEM(status1);
1921 		if (idx < ARRAY_SIZE(snd_rme_rate_table))
1922 			rate = snd_rme_rate_table[idx];
1923 		break;
1924 	case SND_RME_DOMAIN_AES:
1925 		idx = SND_RME_CLK_AES(status1);
1926 		if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
1927 			rate = snd_rme_rate_table[idx];
1928 		break;
1929 	case SND_RME_DOMAIN_SPDIF:
1930 		idx = SND_RME_CLK_SPDIF(status1);
1931 		if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
1932 			rate = snd_rme_rate_table[idx];
1933 		break;
1934 	default:
1935 		return -EINVAL;
1936 	}
1937 	ucontrol->value.integer.value[0] = rate;
1938 	return 0;
1939 }
1940 
1941 static int snd_rme_sync_state_get(struct snd_kcontrol *kcontrol,
1942 				  struct snd_ctl_elem_value *ucontrol)
1943 {
1944 	u32 status1;
1945 	int idx = SND_RME_CLOCK_NOLOCK;
1946 	int err;
1947 
1948 	err = snd_rme_get_status1(kcontrol, &status1);
1949 	if (err < 0)
1950 		return err;
1951 	switch (kcontrol->private_value) {
1952 	case SND_RME_DOMAIN_AES:  /* AES */
1953 		if (status1 & SND_RME_CLK_AES_SYNC)
1954 			idx = SND_RME_CLOCK_SYNC;
1955 		else if (status1 & SND_RME_CLK_AES_LOCK)
1956 			idx = SND_RME_CLOCK_LOCK;
1957 		break;
1958 	case SND_RME_DOMAIN_SPDIF:  /* SPDIF */
1959 		if (status1 & SND_RME_CLK_SPDIF_SYNC)
1960 			idx = SND_RME_CLOCK_SYNC;
1961 		else if (status1 & SND_RME_CLK_SPDIF_LOCK)
1962 			idx = SND_RME_CLOCK_LOCK;
1963 		break;
1964 	default:
1965 		return -EINVAL;
1966 	}
1967 	ucontrol->value.enumerated.item[0] = idx;
1968 	return 0;
1969 }
1970 
1971 static int snd_rme_spdif_if_get(struct snd_kcontrol *kcontrol,
1972 				struct snd_ctl_elem_value *ucontrol)
1973 {
1974 	u32 status1;
1975 	int err;
1976 
1977 	err = snd_rme_get_status1(kcontrol, &status1);
1978 	if (err < 0)
1979 		return err;
1980 	ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_IF(status1);
1981 	return 0;
1982 }
1983 
1984 static int snd_rme_spdif_format_get(struct snd_kcontrol *kcontrol,
1985 				    struct snd_ctl_elem_value *ucontrol)
1986 {
1987 	u32 status1;
1988 	int err;
1989 
1990 	err = snd_rme_get_status1(kcontrol, &status1);
1991 	if (err < 0)
1992 		return err;
1993 	ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_FORMAT(status1);
1994 	return 0;
1995 }
1996 
1997 static int snd_rme_sync_source_get(struct snd_kcontrol *kcontrol,
1998 				   struct snd_ctl_elem_value *ucontrol)
1999 {
2000 	u32 status1;
2001 	int err;
2002 
2003 	err = snd_rme_get_status1(kcontrol, &status1);
2004 	if (err < 0)
2005 		return err;
2006 	ucontrol->value.enumerated.item[0] = SND_RME_CLK_SYNC(status1);
2007 	return 0;
2008 }
2009 
2010 static int snd_rme_current_freq_get(struct snd_kcontrol *kcontrol,
2011 				    struct snd_ctl_elem_value *ucontrol)
2012 {
2013 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2014 	struct snd_usb_audio *chip = list->mixer->chip;
2015 	u32 status1;
2016 	const u64 num = 104857600000000ULL;
2017 	u32 den;
2018 	unsigned int freq;
2019 	int err;
2020 
2021 	err = snd_usb_lock_shutdown(chip);
2022 	if (err < 0)
2023 		return err;
2024 	err = snd_rme_read_value(chip, SND_RME_GET_STATUS1, &status1);
2025 	if (err < 0)
2026 		goto end;
2027 	err = snd_rme_read_value(chip, SND_RME_GET_CURRENT_FREQ, &den);
2028 	if (err < 0)
2029 		goto end;
2030 	freq = (den == 0) ? 0 : div64_u64(num, den);
2031 	freq <<= SND_RME_CLK_FREQMUL(status1);
2032 	ucontrol->value.integer.value[0] = freq;
2033 
2034 end:
2035 	snd_usb_unlock_shutdown(chip);
2036 	return err;
2037 }
2038 
2039 static int snd_rme_rate_info(struct snd_kcontrol *kcontrol,
2040 			     struct snd_ctl_elem_info *uinfo)
2041 {
2042 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2043 	uinfo->count = 1;
2044 	switch (kcontrol->private_value) {
2045 	case SND_RME_DOMAIN_SYSTEM:
2046 		uinfo->value.integer.min = 32000;
2047 		uinfo->value.integer.max = 800000;
2048 		break;
2049 	case SND_RME_DOMAIN_AES:
2050 	case SND_RME_DOMAIN_SPDIF:
2051 	default:
2052 		uinfo->value.integer.min = 0;
2053 		uinfo->value.integer.max = 200000;
2054 	}
2055 	uinfo->value.integer.step = 0;
2056 	return 0;
2057 }
2058 
2059 static int snd_rme_sync_state_info(struct snd_kcontrol *kcontrol,
2060 				   struct snd_ctl_elem_info *uinfo)
2061 {
2062 	static const char *const sync_states[] = {
2063 		"No Lock", "Lock", "Sync"
2064 	};
2065 
2066 	return snd_ctl_enum_info(uinfo, 1,
2067 				 ARRAY_SIZE(sync_states), sync_states);
2068 }
2069 
2070 static int snd_rme_spdif_if_info(struct snd_kcontrol *kcontrol,
2071 				 struct snd_ctl_elem_info *uinfo)
2072 {
2073 	static const char *const spdif_if[] = {
2074 		"Coaxial", "Optical"
2075 	};
2076 
2077 	return snd_ctl_enum_info(uinfo, 1,
2078 				 ARRAY_SIZE(spdif_if), spdif_if);
2079 }
2080 
2081 static int snd_rme_spdif_format_info(struct snd_kcontrol *kcontrol,
2082 				     struct snd_ctl_elem_info *uinfo)
2083 {
2084 	static const char *const optical_type[] = {
2085 		"Consumer", "Professional"
2086 	};
2087 
2088 	return snd_ctl_enum_info(uinfo, 1,
2089 				 ARRAY_SIZE(optical_type), optical_type);
2090 }
2091 
2092 static int snd_rme_sync_source_info(struct snd_kcontrol *kcontrol,
2093 				    struct snd_ctl_elem_info *uinfo)
2094 {
2095 	static const char *const sync_sources[] = {
2096 		"Internal", "AES", "SPDIF", "Internal"
2097 	};
2098 
2099 	return snd_ctl_enum_info(uinfo, 1,
2100 				 ARRAY_SIZE(sync_sources), sync_sources);
2101 }
2102 
2103 static const struct snd_kcontrol_new snd_rme_controls[] = {
2104 	{
2105 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2106 		.name = "AES Rate",
2107 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2108 		.info = snd_rme_rate_info,
2109 		.get = snd_rme_rate_get,
2110 		.private_value = SND_RME_DOMAIN_AES
2111 	},
2112 	{
2113 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2114 		.name = "AES Sync",
2115 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2116 		.info = snd_rme_sync_state_info,
2117 		.get = snd_rme_sync_state_get,
2118 		.private_value = SND_RME_DOMAIN_AES
2119 	},
2120 	{
2121 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2122 		.name = "SPDIF Rate",
2123 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2124 		.info = snd_rme_rate_info,
2125 		.get = snd_rme_rate_get,
2126 		.private_value = SND_RME_DOMAIN_SPDIF
2127 	},
2128 	{
2129 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2130 		.name = "SPDIF Sync",
2131 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2132 		.info = snd_rme_sync_state_info,
2133 		.get = snd_rme_sync_state_get,
2134 		.private_value = SND_RME_DOMAIN_SPDIF
2135 	},
2136 	{
2137 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2138 		.name = "SPDIF Interface",
2139 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2140 		.info = snd_rme_spdif_if_info,
2141 		.get = snd_rme_spdif_if_get,
2142 	},
2143 	{
2144 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2145 		.name = "SPDIF Format",
2146 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2147 		.info = snd_rme_spdif_format_info,
2148 		.get = snd_rme_spdif_format_get,
2149 	},
2150 	{
2151 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2152 		.name = "Sync Source",
2153 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2154 		.info = snd_rme_sync_source_info,
2155 		.get = snd_rme_sync_source_get
2156 	},
2157 	{
2158 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2159 		.name = "System Rate",
2160 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2161 		.info = snd_rme_rate_info,
2162 		.get = snd_rme_rate_get,
2163 		.private_value = SND_RME_DOMAIN_SYSTEM
2164 	},
2165 	{
2166 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2167 		.name = "Current Frequency",
2168 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2169 		.info = snd_rme_rate_info,
2170 		.get = snd_rme_current_freq_get
2171 	}
2172 };
2173 
2174 static int snd_rme_controls_create(struct usb_mixer_interface *mixer)
2175 {
2176 	int err, i;
2177 
2178 	for (i = 0; i < ARRAY_SIZE(snd_rme_controls); ++i) {
2179 		err = add_single_ctl_with_resume(mixer, 0,
2180 						 NULL,
2181 						 &snd_rme_controls[i],
2182 						 NULL);
2183 		if (err < 0)
2184 			return err;
2185 	}
2186 
2187 	return 0;
2188 }
2189 
2190 /*
2191  * RME Babyface Pro (FS)
2192  *
2193  * These devices exposes a couple of DSP functions via request to EP0.
2194  * Switches are available via control registers, while routing is controlled
2195  * by controlling the volume on each possible crossing point.
2196  * Volume control is linear, from -inf (dec. 0) to +6dB (dec. 65536) with
2197  * 0dB being at dec. 32768.
2198  */
2199 enum {
2200 	SND_BBFPRO_CTL_REG1 = 0,
2201 	SND_BBFPRO_CTL_REG2
2202 };
2203 
2204 #define SND_BBFPRO_CTL_REG_MASK 1
2205 #define SND_BBFPRO_CTL_IDX_MASK 0xff
2206 #define SND_BBFPRO_CTL_IDX_SHIFT 1
2207 #define SND_BBFPRO_CTL_VAL_MASK 1
2208 #define SND_BBFPRO_CTL_VAL_SHIFT 9
2209 #define SND_BBFPRO_CTL_REG1_CLK_MASTER 0
2210 #define SND_BBFPRO_CTL_REG1_CLK_OPTICAL 1
2211 #define SND_BBFPRO_CTL_REG1_SPDIF_PRO 7
2212 #define SND_BBFPRO_CTL_REG1_SPDIF_EMPH 8
2213 #define SND_BBFPRO_CTL_REG1_SPDIF_OPTICAL 10
2214 #define SND_BBFPRO_CTL_REG2_48V_AN1 0
2215 #define SND_BBFPRO_CTL_REG2_48V_AN2 1
2216 #define SND_BBFPRO_CTL_REG2_SENS_IN3 2
2217 #define SND_BBFPRO_CTL_REG2_SENS_IN4 3
2218 #define SND_BBFPRO_CTL_REG2_PAD_AN1 4
2219 #define SND_BBFPRO_CTL_REG2_PAD_AN2 5
2220 
2221 #define SND_BBFPRO_MIXER_IDX_MASK 0x1ff
2222 #define SND_BBFPRO_MIXER_VAL_MASK 0x3ffff
2223 #define SND_BBFPRO_MIXER_VAL_SHIFT 9
2224 #define SND_BBFPRO_MIXER_VAL_MIN 0 // -inf
2225 #define SND_BBFPRO_MIXER_VAL_MAX 65536 // +6dB
2226 
2227 #define SND_BBFPRO_USBREQ_CTL_REG1 0x10
2228 #define SND_BBFPRO_USBREQ_CTL_REG2 0x17
2229 #define SND_BBFPRO_USBREQ_MIXER 0x12
2230 
2231 static int snd_bbfpro_ctl_update(struct usb_mixer_interface *mixer, u8 reg,
2232 				 u8 index, u8 value)
2233 {
2234 	int err;
2235 	u16 usb_req, usb_idx, usb_val;
2236 	struct snd_usb_audio *chip = mixer->chip;
2237 
2238 	err = snd_usb_lock_shutdown(chip);
2239 	if (err < 0)
2240 		return err;
2241 
2242 	if (reg == SND_BBFPRO_CTL_REG1) {
2243 		usb_req = SND_BBFPRO_USBREQ_CTL_REG1;
2244 		if (index == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) {
2245 			usb_idx = 3;
2246 			usb_val = value ? 3 : 0;
2247 		} else {
2248 			usb_idx = 1 << index;
2249 			usb_val = value ? usb_idx : 0;
2250 		}
2251 	} else {
2252 		usb_req = SND_BBFPRO_USBREQ_CTL_REG2;
2253 		usb_idx = 1 << index;
2254 		usb_val = value ? usb_idx : 0;
2255 	}
2256 
2257 	err = snd_usb_ctl_msg(chip->dev,
2258 			      usb_sndctrlpipe(chip->dev, 0), usb_req,
2259 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2260 			      usb_val, usb_idx, NULL, 0);
2261 
2262 	snd_usb_unlock_shutdown(chip);
2263 	return err;
2264 }
2265 
2266 static int snd_bbfpro_ctl_get(struct snd_kcontrol *kcontrol,
2267 			      struct snd_ctl_elem_value *ucontrol)
2268 {
2269 	u8 reg, idx, val;
2270 	int pv;
2271 
2272 	pv = kcontrol->private_value;
2273 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
2274 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
2275 	val = kcontrol->private_value >> SND_BBFPRO_CTL_VAL_SHIFT;
2276 
2277 	if ((reg == SND_BBFPRO_CTL_REG1 &&
2278 	     idx == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) ||
2279 	    (reg == SND_BBFPRO_CTL_REG2 &&
2280 	    (idx == SND_BBFPRO_CTL_REG2_SENS_IN3 ||
2281 	     idx == SND_BBFPRO_CTL_REG2_SENS_IN4))) {
2282 		ucontrol->value.enumerated.item[0] = val;
2283 	} else {
2284 		ucontrol->value.integer.value[0] = val;
2285 	}
2286 	return 0;
2287 }
2288 
2289 static int snd_bbfpro_ctl_info(struct snd_kcontrol *kcontrol,
2290 			       struct snd_ctl_elem_info *uinfo)
2291 {
2292 	u8 reg, idx;
2293 	int pv;
2294 
2295 	pv = kcontrol->private_value;
2296 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
2297 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
2298 
2299 	if (reg == SND_BBFPRO_CTL_REG1 &&
2300 	    idx == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) {
2301 		static const char * const texts[2] = {
2302 			"AutoSync",
2303 			"Internal"
2304 		};
2305 		return snd_ctl_enum_info(uinfo, 1, 2, texts);
2306 	} else if (reg == SND_BBFPRO_CTL_REG2 &&
2307 		   (idx == SND_BBFPRO_CTL_REG2_SENS_IN3 ||
2308 		    idx == SND_BBFPRO_CTL_REG2_SENS_IN4)) {
2309 		static const char * const texts[2] = {
2310 			"-10dBV",
2311 			"+4dBu"
2312 		};
2313 		return snd_ctl_enum_info(uinfo, 1, 2, texts);
2314 	}
2315 
2316 	uinfo->count = 1;
2317 	uinfo->value.integer.min = 0;
2318 	uinfo->value.integer.max = 1;
2319 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2320 	return 0;
2321 }
2322 
2323 static int snd_bbfpro_ctl_put(struct snd_kcontrol *kcontrol,
2324 			      struct snd_ctl_elem_value *ucontrol)
2325 {
2326 	int err;
2327 	u8 reg, idx;
2328 	int old_value, pv, val;
2329 
2330 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2331 	struct usb_mixer_interface *mixer = list->mixer;
2332 
2333 	pv = kcontrol->private_value;
2334 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
2335 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
2336 	old_value = (pv >> SND_BBFPRO_CTL_VAL_SHIFT) & SND_BBFPRO_CTL_VAL_MASK;
2337 
2338 	if ((reg == SND_BBFPRO_CTL_REG1 &&
2339 	     idx == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) ||
2340 	    (reg == SND_BBFPRO_CTL_REG2 &&
2341 	    (idx == SND_BBFPRO_CTL_REG2_SENS_IN3 ||
2342 	     idx == SND_BBFPRO_CTL_REG2_SENS_IN4))) {
2343 		val = ucontrol->value.enumerated.item[0];
2344 	} else {
2345 		val = ucontrol->value.integer.value[0];
2346 	}
2347 
2348 	if (val > 1)
2349 		return -EINVAL;
2350 
2351 	if (val == old_value)
2352 		return 0;
2353 
2354 	kcontrol->private_value = reg
2355 		| ((idx & SND_BBFPRO_CTL_IDX_MASK) << SND_BBFPRO_CTL_IDX_SHIFT)
2356 		| ((val & SND_BBFPRO_CTL_VAL_MASK) << SND_BBFPRO_CTL_VAL_SHIFT);
2357 
2358 	err = snd_bbfpro_ctl_update(mixer, reg, idx, val);
2359 	return err < 0 ? err : 1;
2360 }
2361 
2362 static int snd_bbfpro_ctl_resume(struct usb_mixer_elem_list *list)
2363 {
2364 	u8 reg, idx;
2365 	int value, pv;
2366 
2367 	pv = list->kctl->private_value;
2368 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
2369 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
2370 	value = (pv >> SND_BBFPRO_CTL_VAL_SHIFT) & SND_BBFPRO_CTL_VAL_MASK;
2371 
2372 	return snd_bbfpro_ctl_update(list->mixer, reg, idx, value);
2373 }
2374 
2375 static int snd_bbfpro_vol_update(struct usb_mixer_interface *mixer, u16 index,
2376 				 u32 value)
2377 {
2378 	struct snd_usb_audio *chip = mixer->chip;
2379 	int err;
2380 	u16 idx;
2381 	u16 usb_idx, usb_val;
2382 	u32 v;
2383 
2384 	err = snd_usb_lock_shutdown(chip);
2385 	if (err < 0)
2386 		return err;
2387 
2388 	idx = index & SND_BBFPRO_MIXER_IDX_MASK;
2389 	// 18 bit linear volume, split so 2 bits end up in index.
2390 	v = value & SND_BBFPRO_MIXER_VAL_MASK;
2391 	usb_idx = idx | (v & 0x3) << 14;
2392 	usb_val = (v >> 2) & 0xffff;
2393 
2394 	err = snd_usb_ctl_msg(chip->dev,
2395 			      usb_sndctrlpipe(chip->dev, 0),
2396 			      SND_BBFPRO_USBREQ_MIXER,
2397 			      USB_DIR_OUT | USB_TYPE_VENDOR |
2398 			      USB_RECIP_DEVICE,
2399 			      usb_val, usb_idx, NULL, 0);
2400 
2401 	snd_usb_unlock_shutdown(chip);
2402 	return err;
2403 }
2404 
2405 static int snd_bbfpro_vol_get(struct snd_kcontrol *kcontrol,
2406 			      struct snd_ctl_elem_value *ucontrol)
2407 {
2408 	ucontrol->value.integer.value[0] =
2409 		kcontrol->private_value >> SND_BBFPRO_MIXER_VAL_SHIFT;
2410 	return 0;
2411 }
2412 
2413 static int snd_bbfpro_vol_info(struct snd_kcontrol *kcontrol,
2414 			       struct snd_ctl_elem_info *uinfo)
2415 {
2416 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2417 	uinfo->count = 1;
2418 	uinfo->value.integer.min = SND_BBFPRO_MIXER_VAL_MIN;
2419 	uinfo->value.integer.max = SND_BBFPRO_MIXER_VAL_MAX;
2420 	return 0;
2421 }
2422 
2423 static int snd_bbfpro_vol_put(struct snd_kcontrol *kcontrol,
2424 			      struct snd_ctl_elem_value *ucontrol)
2425 {
2426 	int err;
2427 	u16 idx;
2428 	u32 new_val, old_value, uvalue;
2429 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2430 	struct usb_mixer_interface *mixer = list->mixer;
2431 
2432 	uvalue = ucontrol->value.integer.value[0];
2433 	idx = kcontrol->private_value & SND_BBFPRO_MIXER_IDX_MASK;
2434 	old_value = kcontrol->private_value >> SND_BBFPRO_MIXER_VAL_SHIFT;
2435 
2436 	if (uvalue > SND_BBFPRO_MIXER_VAL_MAX)
2437 		return -EINVAL;
2438 
2439 	if (uvalue == old_value)
2440 		return 0;
2441 
2442 	new_val = uvalue & SND_BBFPRO_MIXER_VAL_MASK;
2443 
2444 	kcontrol->private_value = idx
2445 		| (new_val << SND_BBFPRO_MIXER_VAL_SHIFT);
2446 
2447 	err = snd_bbfpro_vol_update(mixer, idx, new_val);
2448 	return err < 0 ? err : 1;
2449 }
2450 
2451 static int snd_bbfpro_vol_resume(struct usb_mixer_elem_list *list)
2452 {
2453 	int pv = list->kctl->private_value;
2454 	u16 idx = pv & SND_BBFPRO_MIXER_IDX_MASK;
2455 	u32 val = (pv >> SND_BBFPRO_MIXER_VAL_SHIFT)
2456 		& SND_BBFPRO_MIXER_VAL_MASK;
2457 	return snd_bbfpro_vol_update(list->mixer, idx, val);
2458 }
2459 
2460 // Predfine elements
2461 static const struct snd_kcontrol_new snd_bbfpro_ctl_control = {
2462 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2463 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
2464 	.index = 0,
2465 	.info = snd_bbfpro_ctl_info,
2466 	.get = snd_bbfpro_ctl_get,
2467 	.put = snd_bbfpro_ctl_put
2468 };
2469 
2470 static const struct snd_kcontrol_new snd_bbfpro_vol_control = {
2471 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2472 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
2473 	.index = 0,
2474 	.info = snd_bbfpro_vol_info,
2475 	.get = snd_bbfpro_vol_get,
2476 	.put = snd_bbfpro_vol_put
2477 };
2478 
2479 static int snd_bbfpro_ctl_add(struct usb_mixer_interface *mixer, u8 reg,
2480 			      u8 index, char *name)
2481 {
2482 	struct snd_kcontrol_new knew = snd_bbfpro_ctl_control;
2483 
2484 	knew.name = name;
2485 	knew.private_value = (reg & SND_BBFPRO_CTL_REG_MASK)
2486 		| ((index & SND_BBFPRO_CTL_IDX_MASK)
2487 			<< SND_BBFPRO_CTL_IDX_SHIFT);
2488 
2489 	return add_single_ctl_with_resume(mixer, 0, snd_bbfpro_ctl_resume,
2490 		&knew, NULL);
2491 }
2492 
2493 static int snd_bbfpro_vol_add(struct usb_mixer_interface *mixer, u16 index,
2494 			      char *name)
2495 {
2496 	struct snd_kcontrol_new knew = snd_bbfpro_vol_control;
2497 
2498 	knew.name = name;
2499 	knew.private_value = index & SND_BBFPRO_MIXER_IDX_MASK;
2500 
2501 	return add_single_ctl_with_resume(mixer, 0, snd_bbfpro_vol_resume,
2502 		&knew, NULL);
2503 }
2504 
2505 static int snd_bbfpro_controls_create(struct usb_mixer_interface *mixer)
2506 {
2507 	int err, i, o;
2508 	char name[48];
2509 
2510 	static const char * const input[] = {
2511 		"AN1", "AN2", "IN3", "IN4", "AS1", "AS2", "ADAT3",
2512 		"ADAT4", "ADAT5", "ADAT6", "ADAT7", "ADAT8"};
2513 
2514 	static const char * const output[] = {
2515 		"AN1", "AN2", "PH3", "PH4", "AS1", "AS2", "ADAT3", "ADAT4",
2516 		"ADAT5", "ADAT6", "ADAT7", "ADAT8"};
2517 
2518 	for (o = 0 ; o < 12 ; ++o) {
2519 		for (i = 0 ; i < 12 ; ++i) {
2520 			// Line routing
2521 			snprintf(name, sizeof(name),
2522 				 "%s-%s-%s Playback Volume",
2523 				 (i < 2 ? "Mic" : "Line"),
2524 				 input[i], output[o]);
2525 			err = snd_bbfpro_vol_add(mixer, (26 * o + i), name);
2526 			if (err < 0)
2527 				return err;
2528 
2529 			// PCM routing... yes, it is output remapping
2530 			snprintf(name, sizeof(name),
2531 				 "PCM-%s-%s Playback Volume",
2532 				 output[i], output[o]);
2533 			err = snd_bbfpro_vol_add(mixer, (26 * o + 12 + i),
2534 						 name);
2535 			if (err < 0)
2536 				return err;
2537 		}
2538 	}
2539 
2540 	// Control Reg 1
2541 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
2542 				 SND_BBFPRO_CTL_REG1_CLK_OPTICAL,
2543 				 "Sample Clock Source");
2544 	if (err < 0)
2545 		return err;
2546 
2547 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
2548 				 SND_BBFPRO_CTL_REG1_SPDIF_PRO,
2549 				 "IEC958 Pro Mask");
2550 	if (err < 0)
2551 		return err;
2552 
2553 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
2554 				 SND_BBFPRO_CTL_REG1_SPDIF_EMPH,
2555 				 "IEC958 Emphasis");
2556 	if (err < 0)
2557 		return err;
2558 
2559 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
2560 				 SND_BBFPRO_CTL_REG1_SPDIF_OPTICAL,
2561 				 "IEC958 Switch");
2562 	if (err < 0)
2563 		return err;
2564 
2565 	// Control Reg 2
2566 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
2567 				 SND_BBFPRO_CTL_REG2_48V_AN1,
2568 				 "Mic-AN1 48V");
2569 	if (err < 0)
2570 		return err;
2571 
2572 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
2573 				 SND_BBFPRO_CTL_REG2_48V_AN2,
2574 				 "Mic-AN2 48V");
2575 	if (err < 0)
2576 		return err;
2577 
2578 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
2579 				 SND_BBFPRO_CTL_REG2_SENS_IN3,
2580 				 "Line-IN3 Sens.");
2581 	if (err < 0)
2582 		return err;
2583 
2584 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
2585 				 SND_BBFPRO_CTL_REG2_SENS_IN4,
2586 				 "Line-IN4 Sens.");
2587 	if (err < 0)
2588 		return err;
2589 
2590 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
2591 				 SND_BBFPRO_CTL_REG2_PAD_AN1,
2592 				 "Mic-AN1 PAD");
2593 	if (err < 0)
2594 		return err;
2595 
2596 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
2597 				 SND_BBFPRO_CTL_REG2_PAD_AN2,
2598 				 "Mic-AN2 PAD");
2599 	if (err < 0)
2600 		return err;
2601 
2602 	return 0;
2603 }
2604 
2605 /*
2606  * Pioneer DJ DJM Mixers
2607  *
2608  * These devices generally have options for soft-switching the playback and
2609  * capture sources in addition to the recording level. Although different
2610  * devices have different configurations, there seems to be canonical values
2611  * for specific capture/playback types:  See the definitions of these below.
2612  *
2613  * The wValue is masked with the stereo channel number. e.g. Setting Ch2 to
2614  * capture phono would be 0x0203. Capture, playback and capture level have
2615  * different wIndexes.
2616  */
2617 
2618 // Capture types
2619 #define SND_DJM_CAP_LINE	0x00
2620 #define SND_DJM_CAP_CDLINE	0x01
2621 #define SND_DJM_CAP_DIGITAL	0x02
2622 #define SND_DJM_CAP_PHONO	0x03
2623 #define SND_DJM_CAP_PFADER	0x06
2624 #define SND_DJM_CAP_XFADERA	0x07
2625 #define SND_DJM_CAP_XFADERB	0x08
2626 #define SND_DJM_CAP_MIC		0x09
2627 #define SND_DJM_CAP_AUX		0x0d
2628 #define SND_DJM_CAP_RECOUT	0x0a
2629 #define SND_DJM_CAP_NONE	0x0f
2630 #define SND_DJM_CAP_CH1PFADER	0x11
2631 #define SND_DJM_CAP_CH2PFADER	0x12
2632 #define SND_DJM_CAP_CH3PFADER	0x13
2633 #define SND_DJM_CAP_CH4PFADER	0x14
2634 
2635 // Playback types
2636 #define SND_DJM_PB_CH1		0x00
2637 #define SND_DJM_PB_CH2		0x01
2638 #define SND_DJM_PB_AUX		0x04
2639 
2640 #define SND_DJM_WINDEX_CAP	0x8002
2641 #define SND_DJM_WINDEX_CAPLVL	0x8003
2642 #define SND_DJM_WINDEX_PB	0x8016
2643 
2644 // kcontrol->private_value layout
2645 #define SND_DJM_VALUE_MASK	0x0000ffff
2646 #define SND_DJM_GROUP_MASK	0x00ff0000
2647 #define SND_DJM_DEVICE_MASK	0xff000000
2648 #define SND_DJM_GROUP_SHIFT	16
2649 #define SND_DJM_DEVICE_SHIFT	24
2650 
2651 // device table index
2652 // used for the snd_djm_devices table, so please update accordingly
2653 #define SND_DJM_250MK2_IDX	0x0
2654 #define SND_DJM_750_IDX		0x1
2655 #define SND_DJM_850_IDX		0x2
2656 #define SND_DJM_900NXS2_IDX	0x3
2657 
2658 
2659 #define SND_DJM_CTL(_name, suffix, _default_value, _windex) { \
2660 	.name = _name, \
2661 	.options = snd_djm_opts_##suffix, \
2662 	.noptions = ARRAY_SIZE(snd_djm_opts_##suffix), \
2663 	.default_value = _default_value, \
2664 	.wIndex = _windex }
2665 
2666 #define SND_DJM_DEVICE(suffix) { \
2667 	.controls = snd_djm_ctls_##suffix, \
2668 	.ncontrols = ARRAY_SIZE(snd_djm_ctls_##suffix) }
2669 
2670 
2671 struct snd_djm_device {
2672 	const char *name;
2673 	const struct snd_djm_ctl *controls;
2674 	size_t ncontrols;
2675 };
2676 
2677 struct snd_djm_ctl {
2678 	const char *name;
2679 	const u16 *options;
2680 	size_t noptions;
2681 	u16 default_value;
2682 	u16 wIndex;
2683 };
2684 
2685 static const char *snd_djm_get_label_caplevel(u16 wvalue)
2686 {
2687 	switch (wvalue) {
2688 	case 0x0000:	return "-19dB";
2689 	case 0x0100:	return "-15dB";
2690 	case 0x0200:	return "-10dB";
2691 	case 0x0300:	return "-5dB";
2692 	default:	return NULL;
2693 	}
2694 };
2695 
2696 static const char *snd_djm_get_label_cap_common(u16 wvalue)
2697 {
2698 	switch (wvalue & 0x00ff) {
2699 	case SND_DJM_CAP_LINE:		return "Control Tone LINE";
2700 	case SND_DJM_CAP_CDLINE:	return "Control Tone CD/LINE";
2701 	case SND_DJM_CAP_DIGITAL:	return "Control Tone DIGITAL";
2702 	case SND_DJM_CAP_PHONO:		return "Control Tone PHONO";
2703 	case SND_DJM_CAP_PFADER:	return "Post Fader";
2704 	case SND_DJM_CAP_XFADERA:	return "Cross Fader A";
2705 	case SND_DJM_CAP_XFADERB:	return "Cross Fader B";
2706 	case SND_DJM_CAP_MIC:		return "Mic";
2707 	case SND_DJM_CAP_RECOUT:	return "Rec Out";
2708 	case SND_DJM_CAP_AUX:		return "Aux";
2709 	case SND_DJM_CAP_NONE:		return "None";
2710 	case SND_DJM_CAP_CH1PFADER:	return "Post Fader Ch1";
2711 	case SND_DJM_CAP_CH2PFADER:	return "Post Fader Ch2";
2712 	case SND_DJM_CAP_CH3PFADER:	return "Post Fader Ch3";
2713 	case SND_DJM_CAP_CH4PFADER:	return "Post Fader Ch4";
2714 	default:			return NULL;
2715 	}
2716 };
2717 
2718 // The DJM-850 has different values for CD/LINE and LINE capture
2719 // control options than the other DJM declared in this file.
2720 static const char *snd_djm_get_label_cap_850(u16 wvalue)
2721 {
2722 	switch (wvalue & 0x00ff) {
2723 	case 0x00:		return "Control Tone CD/LINE";
2724 	case 0x01:		return "Control Tone LINE";
2725 	default:		return snd_djm_get_label_cap_common(wvalue);
2726 	}
2727 };
2728 
2729 static const char *snd_djm_get_label_cap(u8 device_idx, u16 wvalue)
2730 {
2731 	switch (device_idx) {
2732 	case SND_DJM_850_IDX:		return snd_djm_get_label_cap_850(wvalue);
2733 	default:			return snd_djm_get_label_cap_common(wvalue);
2734 	}
2735 };
2736 
2737 static const char *snd_djm_get_label_pb(u16 wvalue)
2738 {
2739 	switch (wvalue & 0x00ff) {
2740 	case SND_DJM_PB_CH1:	return "Ch1";
2741 	case SND_DJM_PB_CH2:	return "Ch2";
2742 	case SND_DJM_PB_AUX:	return "Aux";
2743 	default:		return NULL;
2744 	}
2745 };
2746 
2747 static const char *snd_djm_get_label(u8 device_idx, u16 wvalue, u16 windex)
2748 {
2749 	switch (windex) {
2750 	case SND_DJM_WINDEX_CAPLVL:	return snd_djm_get_label_caplevel(wvalue);
2751 	case SND_DJM_WINDEX_CAP:	return snd_djm_get_label_cap(device_idx, wvalue);
2752 	case SND_DJM_WINDEX_PB:		return snd_djm_get_label_pb(wvalue);
2753 	default:			return NULL;
2754 	}
2755 };
2756 
2757 // common DJM capture level option values
2758 static const u16 snd_djm_opts_cap_level[] = {
2759 	0x0000, 0x0100, 0x0200, 0x0300 };
2760 
2761 
2762 // DJM-250MK2
2763 static const u16 snd_djm_opts_250mk2_cap1[] = {
2764 	0x0103, 0x0100, 0x0106, 0x0107, 0x0108, 0x0109, 0x010d, 0x010a };
2765 
2766 static const u16 snd_djm_opts_250mk2_cap2[] = {
2767 	0x0203, 0x0200, 0x0206, 0x0207, 0x0208, 0x0209, 0x020d, 0x020a };
2768 
2769 static const u16 snd_djm_opts_250mk2_cap3[] = {
2770 	0x030a, 0x0311, 0x0312, 0x0307, 0x0308, 0x0309, 0x030d };
2771 
2772 static const u16 snd_djm_opts_250mk2_pb1[] = { 0x0100, 0x0101, 0x0104 };
2773 static const u16 snd_djm_opts_250mk2_pb2[] = { 0x0200, 0x0201, 0x0204 };
2774 static const u16 snd_djm_opts_250mk2_pb3[] = { 0x0300, 0x0301, 0x0304 };
2775 
2776 static const struct snd_djm_ctl snd_djm_ctls_250mk2[] = {
2777 	SND_DJM_CTL("Capture Level", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
2778 	SND_DJM_CTL("Ch1 Input",   250mk2_cap1, 2, SND_DJM_WINDEX_CAP),
2779 	SND_DJM_CTL("Ch2 Input",   250mk2_cap2, 2, SND_DJM_WINDEX_CAP),
2780 	SND_DJM_CTL("Ch3 Input",   250mk2_cap3, 0, SND_DJM_WINDEX_CAP),
2781 	SND_DJM_CTL("Ch1 Output",   250mk2_pb1, 0, SND_DJM_WINDEX_PB),
2782 	SND_DJM_CTL("Ch2 Output",   250mk2_pb2, 1, SND_DJM_WINDEX_PB),
2783 	SND_DJM_CTL("Ch3 Output",   250mk2_pb3, 2, SND_DJM_WINDEX_PB)
2784 };
2785 
2786 
2787 // DJM-750
2788 static const u16 snd_djm_opts_750_cap1[] = {
2789 	0x0101, 0x0103, 0x0106, 0x0107, 0x0108, 0x0109, 0x010a, 0x010f };
2790 static const u16 snd_djm_opts_750_cap2[] = {
2791 	0x0200, 0x0201, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a, 0x020f };
2792 static const u16 snd_djm_opts_750_cap3[] = {
2793 	0x0300, 0x0301, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a, 0x030f };
2794 static const u16 snd_djm_opts_750_cap4[] = {
2795 	0x0401, 0x0403, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a, 0x040f };
2796 
2797 static const struct snd_djm_ctl snd_djm_ctls_750[] = {
2798 	SND_DJM_CTL("Capture Level", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
2799 	SND_DJM_CTL("Ch1 Input",   750_cap1, 2, SND_DJM_WINDEX_CAP),
2800 	SND_DJM_CTL("Ch2 Input",   750_cap2, 2, SND_DJM_WINDEX_CAP),
2801 	SND_DJM_CTL("Ch3 Input",   750_cap3, 0, SND_DJM_WINDEX_CAP),
2802 	SND_DJM_CTL("Ch4 Input",   750_cap4, 0, SND_DJM_WINDEX_CAP)
2803 };
2804 
2805 
2806 // DJM-850
2807 static const u16 snd_djm_opts_850_cap1[] = {
2808 	0x0100, 0x0103, 0x0106, 0x0107, 0x0108, 0x0109, 0x010a, 0x010f };
2809 static const u16 snd_djm_opts_850_cap2[] = {
2810 	0x0200, 0x0201, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a, 0x020f };
2811 static const u16 snd_djm_opts_850_cap3[] = {
2812 	0x0300, 0x0301, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a, 0x030f };
2813 static const u16 snd_djm_opts_850_cap4[] = {
2814 	0x0400, 0x0403, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a, 0x040f };
2815 
2816 static const struct snd_djm_ctl snd_djm_ctls_850[] = {
2817 	SND_DJM_CTL("Capture Level", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
2818 	SND_DJM_CTL("Ch1 Input",   850_cap1, 1, SND_DJM_WINDEX_CAP),
2819 	SND_DJM_CTL("Ch2 Input",   850_cap2, 0, SND_DJM_WINDEX_CAP),
2820 	SND_DJM_CTL("Ch3 Input",   850_cap3, 0, SND_DJM_WINDEX_CAP),
2821 	SND_DJM_CTL("Ch4 Input",   850_cap4, 1, SND_DJM_WINDEX_CAP)
2822 };
2823 
2824 
2825 // DJM-900NXS2
2826 static const u16 snd_djm_opts_900nxs2_cap1[] = {
2827 	0x0100, 0x0102, 0x0103, 0x0106, 0x0107, 0x0108, 0x0109, 0x010a };
2828 static const u16 snd_djm_opts_900nxs2_cap2[] = {
2829 	0x0200, 0x0202, 0x0203, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a };
2830 static const u16 snd_djm_opts_900nxs2_cap3[] = {
2831 	0x0300, 0x0302, 0x0303, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a };
2832 static const u16 snd_djm_opts_900nxs2_cap4[] = {
2833 	0x0400, 0x0402, 0x0403, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a };
2834 static const u16 snd_djm_opts_900nxs2_cap5[] = {
2835 	0x0507, 0x0508, 0x0509, 0x050a, 0x0511, 0x0512, 0x0513, 0x0514 };
2836 
2837 static const struct snd_djm_ctl snd_djm_ctls_900nxs2[] = {
2838 	SND_DJM_CTL("Capture Level", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
2839 	SND_DJM_CTL("Ch1 Input",   900nxs2_cap1, 2, SND_DJM_WINDEX_CAP),
2840 	SND_DJM_CTL("Ch2 Input",   900nxs2_cap2, 2, SND_DJM_WINDEX_CAP),
2841 	SND_DJM_CTL("Ch3 Input",   900nxs2_cap3, 2, SND_DJM_WINDEX_CAP),
2842 	SND_DJM_CTL("Ch4 Input",   900nxs2_cap4, 2, SND_DJM_WINDEX_CAP),
2843 	SND_DJM_CTL("Ch5 Input",   900nxs2_cap5, 3, SND_DJM_WINDEX_CAP)
2844 };
2845 
2846 
2847 static const struct snd_djm_device snd_djm_devices[] = {
2848 	SND_DJM_DEVICE(250mk2),
2849 	SND_DJM_DEVICE(750),
2850 	SND_DJM_DEVICE(850),
2851 	SND_DJM_DEVICE(900nxs2)
2852 };
2853 
2854 
2855 static int snd_djm_controls_info(struct snd_kcontrol *kctl,
2856 				struct snd_ctl_elem_info *info)
2857 {
2858 	unsigned long private_value = kctl->private_value;
2859 	u8 device_idx = (private_value & SND_DJM_DEVICE_MASK) >> SND_DJM_DEVICE_SHIFT;
2860 	u8 ctl_idx = (private_value & SND_DJM_GROUP_MASK) >> SND_DJM_GROUP_SHIFT;
2861 	const struct snd_djm_device *device = &snd_djm_devices[device_idx];
2862 	const char *name;
2863 	const struct snd_djm_ctl *ctl;
2864 	size_t noptions;
2865 
2866 	if (ctl_idx >= device->ncontrols)
2867 		return -EINVAL;
2868 
2869 	ctl = &device->controls[ctl_idx];
2870 	noptions = ctl->noptions;
2871 	if (info->value.enumerated.item >= noptions)
2872 		info->value.enumerated.item = noptions - 1;
2873 
2874 	name = snd_djm_get_label(device_idx,
2875 				ctl->options[info->value.enumerated.item],
2876 				ctl->wIndex);
2877 	if (!name)
2878 		return -EINVAL;
2879 
2880 	strscpy(info->value.enumerated.name, name, sizeof(info->value.enumerated.name));
2881 	info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
2882 	info->count = 1;
2883 	info->value.enumerated.items = noptions;
2884 	return 0;
2885 }
2886 
2887 static int snd_djm_controls_update(struct usb_mixer_interface *mixer,
2888 				u8 device_idx, u8 group, u16 value)
2889 {
2890 	int err;
2891 	const struct snd_djm_device *device = &snd_djm_devices[device_idx];
2892 
2893 	if ((group >= device->ncontrols) || value >= device->controls[group].noptions)
2894 		return -EINVAL;
2895 
2896 	err = snd_usb_lock_shutdown(mixer->chip);
2897 	if (err)
2898 		return err;
2899 
2900 	err = snd_usb_ctl_msg(
2901 		mixer->chip->dev, usb_sndctrlpipe(mixer->chip->dev, 0),
2902 		USB_REQ_SET_FEATURE,
2903 		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2904 		device->controls[group].options[value],
2905 		device->controls[group].wIndex,
2906 		NULL, 0);
2907 
2908 	snd_usb_unlock_shutdown(mixer->chip);
2909 	return err;
2910 }
2911 
2912 static int snd_djm_controls_get(struct snd_kcontrol *kctl,
2913 				struct snd_ctl_elem_value *elem)
2914 {
2915 	elem->value.enumerated.item[0] = kctl->private_value & SND_DJM_VALUE_MASK;
2916 	return 0;
2917 }
2918 
2919 static int snd_djm_controls_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *elem)
2920 {
2921 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
2922 	struct usb_mixer_interface *mixer = list->mixer;
2923 	unsigned long private_value = kctl->private_value;
2924 
2925 	u8 device = (private_value & SND_DJM_DEVICE_MASK) >> SND_DJM_DEVICE_SHIFT;
2926 	u8 group = (private_value & SND_DJM_GROUP_MASK) >> SND_DJM_GROUP_SHIFT;
2927 	u16 value = elem->value.enumerated.item[0];
2928 
2929 	kctl->private_value = (((unsigned long)device << SND_DJM_DEVICE_SHIFT) |
2930 			      (group << SND_DJM_GROUP_SHIFT) |
2931 			      value);
2932 
2933 	return snd_djm_controls_update(mixer, device, group, value);
2934 }
2935 
2936 static int snd_djm_controls_resume(struct usb_mixer_elem_list *list)
2937 {
2938 	unsigned long private_value = list->kctl->private_value;
2939 	u8 device = (private_value & SND_DJM_DEVICE_MASK) >> SND_DJM_DEVICE_SHIFT;
2940 	u8 group = (private_value & SND_DJM_GROUP_MASK) >> SND_DJM_GROUP_SHIFT;
2941 	u16 value = (private_value & SND_DJM_VALUE_MASK);
2942 
2943 	return snd_djm_controls_update(list->mixer, device, group, value);
2944 }
2945 
2946 static int snd_djm_controls_create(struct usb_mixer_interface *mixer,
2947 		const u8 device_idx)
2948 {
2949 	int err, i;
2950 	u16 value;
2951 
2952 	const struct snd_djm_device *device = &snd_djm_devices[device_idx];
2953 
2954 	struct snd_kcontrol_new knew = {
2955 		.iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
2956 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
2957 		.index = 0,
2958 		.info = snd_djm_controls_info,
2959 		.get  = snd_djm_controls_get,
2960 		.put  = snd_djm_controls_put
2961 	};
2962 
2963 	for (i = 0; i < device->ncontrols; i++) {
2964 		value = device->controls[i].default_value;
2965 		knew.name = device->controls[i].name;
2966 		knew.private_value = (
2967 			((unsigned long)device_idx << SND_DJM_DEVICE_SHIFT) |
2968 			(i << SND_DJM_GROUP_SHIFT) |
2969 			value);
2970 		err = snd_djm_controls_update(mixer, device_idx, i, value);
2971 		if (err)
2972 			return err;
2973 		err = add_single_ctl_with_resume(mixer, 0, snd_djm_controls_resume,
2974 						 &knew, NULL);
2975 		if (err)
2976 			return err;
2977 	}
2978 	return 0;
2979 }
2980 
2981 int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
2982 {
2983 	int err = 0;
2984 
2985 	err = snd_usb_soundblaster_remote_init(mixer);
2986 	if (err < 0)
2987 		return err;
2988 
2989 	switch (mixer->chip->usb_id) {
2990 	/* Tascam US-16x08 */
2991 	case USB_ID(0x0644, 0x8047):
2992 		err = snd_us16x08_controls_create(mixer);
2993 		break;
2994 	case USB_ID(0x041e, 0x3020):
2995 	case USB_ID(0x041e, 0x3040):
2996 	case USB_ID(0x041e, 0x3042):
2997 	case USB_ID(0x041e, 0x30df):
2998 	case USB_ID(0x041e, 0x3048):
2999 		err = snd_audigy2nx_controls_create(mixer);
3000 		if (err < 0)
3001 			break;
3002 		snd_card_ro_proc_new(mixer->chip->card, "audigy2nx",
3003 				     mixer, snd_audigy2nx_proc_read);
3004 		break;
3005 
3006 	/* EMU0204 */
3007 	case USB_ID(0x041e, 0x3f19):
3008 		err = snd_emu0204_controls_create(mixer);
3009 		break;
3010 
3011 	case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
3012 	case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
3013 		err = snd_c400_create_mixer(mixer);
3014 		break;
3015 
3016 	case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
3017 	case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
3018 		err = snd_ftu_create_mixer(mixer);
3019 		break;
3020 
3021 	case USB_ID(0x0b05, 0x1739): /* ASUS Xonar U1 */
3022 	case USB_ID(0x0b05, 0x1743): /* ASUS Xonar U1 (2) */
3023 	case USB_ID(0x0b05, 0x17a0): /* ASUS Xonar U3 */
3024 		err = snd_xonar_u1_controls_create(mixer);
3025 		break;
3026 
3027 	case USB_ID(0x0d8c, 0x0103): /* Audio Advantage Micro II */
3028 		err = snd_microii_controls_create(mixer);
3029 		break;
3030 
3031 	case USB_ID(0x0dba, 0x1000): /* Digidesign Mbox 1 */
3032 		err = snd_mbox1_create_sync_switch(mixer);
3033 		break;
3034 
3035 	case USB_ID(0x17cc, 0x1011): /* Traktor Audio 6 */
3036 		err = snd_nativeinstruments_create_mixer(mixer,
3037 				snd_nativeinstruments_ta6_mixers,
3038 				ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
3039 		break;
3040 
3041 	case USB_ID(0x17cc, 0x1021): /* Traktor Audio 10 */
3042 		err = snd_nativeinstruments_create_mixer(mixer,
3043 				snd_nativeinstruments_ta10_mixers,
3044 				ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
3045 		break;
3046 
3047 	case USB_ID(0x200c, 0x1018): /* Electrix Ebox-44 */
3048 		/* detection is disabled in mixer_maps.c */
3049 		err = snd_create_std_mono_table(mixer, ebox44_table);
3050 		break;
3051 
3052 	case USB_ID(0x1235, 0x8012): /* Focusrite Scarlett 6i6 */
3053 	case USB_ID(0x1235, 0x8002): /* Focusrite Scarlett 8i6 */
3054 	case USB_ID(0x1235, 0x8004): /* Focusrite Scarlett 18i6 */
3055 	case USB_ID(0x1235, 0x8014): /* Focusrite Scarlett 18i8 */
3056 	case USB_ID(0x1235, 0x800c): /* Focusrite Scarlett 18i20 */
3057 		err = snd_scarlett_controls_create(mixer);
3058 		break;
3059 
3060 	case USB_ID(0x1235, 0x8203): /* Focusrite Scarlett 6i6 2nd Gen */
3061 	case USB_ID(0x1235, 0x8204): /* Focusrite Scarlett 18i8 2nd Gen */
3062 	case USB_ID(0x1235, 0x8201): /* Focusrite Scarlett 18i20 2nd Gen */
3063 		err = snd_scarlett_gen2_init(mixer);
3064 		break;
3065 
3066 	case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */
3067 		err = snd_soundblaster_e1_switch_create(mixer);
3068 		break;
3069 	case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
3070 		err = dell_dock_mixer_init(mixer);
3071 		break;
3072 
3073 	case USB_ID(0x2a39, 0x3fd2): /* RME ADI-2 Pro */
3074 	case USB_ID(0x2a39, 0x3fd3): /* RME ADI-2 DAC */
3075 	case USB_ID(0x2a39, 0x3fd4): /* RME */
3076 		err = snd_rme_controls_create(mixer);
3077 		break;
3078 
3079 	case USB_ID(0x0194f, 0x010c): /* Presonus Studio 1810c */
3080 		err = snd_sc1810_init_mixer(mixer);
3081 		break;
3082 	case USB_ID(0x2a39, 0x3fb0): /* RME Babyface Pro FS */
3083 		err = snd_bbfpro_controls_create(mixer);
3084 		break;
3085 	case USB_ID(0x2b73, 0x0017): /* Pioneer DJ DJM-250MK2 */
3086 		err = snd_djm_controls_create(mixer, SND_DJM_250MK2_IDX);
3087 		break;
3088 	case USB_ID(0x08e4, 0x017f): /* Pioneer DJ DJM-750 */
3089 		err = snd_djm_controls_create(mixer, SND_DJM_750_IDX);
3090 		break;
3091 	case USB_ID(0x08e4, 0x0163): /* Pioneer DJ DJM-850 */
3092 		err = snd_djm_controls_create(mixer, SND_DJM_850_IDX);
3093 		break;
3094 	case USB_ID(0x2b73, 0x000a): /* Pioneer DJ DJM-900NXS2 */
3095 		err = snd_djm_controls_create(mixer, SND_DJM_900NXS2_IDX);
3096 		break;
3097 	}
3098 
3099 	return err;
3100 }
3101 
3102 #ifdef CONFIG_PM
3103 void snd_usb_mixer_resume_quirk(struct usb_mixer_interface *mixer)
3104 {
3105 	switch (mixer->chip->usb_id) {
3106 	case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
3107 		dell_dock_mixer_init(mixer);
3108 		break;
3109 	}
3110 }
3111 #endif
3112 
3113 void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
3114 				    int unitid)
3115 {
3116 	if (!mixer->rc_cfg)
3117 		return;
3118 	/* unit ids specific to Extigy/Audigy 2 NX: */
3119 	switch (unitid) {
3120 	case 0: /* remote control */
3121 		mixer->rc_urb->dev = mixer->chip->dev;
3122 		usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
3123 		break;
3124 	case 4: /* digital in jack */
3125 	case 7: /* line in jacks */
3126 	case 19: /* speaker out jacks */
3127 	case 20: /* headphones out jack */
3128 		break;
3129 	/* live24ext: 4 = line-in jack */
3130 	case 3:	/* hp-out jack (may actuate Mute) */
3131 		if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
3132 		    mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
3133 			snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
3134 		break;
3135 	default:
3136 		usb_audio_dbg(mixer->chip, "memory change in unknown unit %d\n", unitid);
3137 		break;
3138 	}
3139 }
3140 
3141 static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer,
3142 					 struct usb_mixer_elem_info *cval,
3143 					 struct snd_kcontrol *kctl)
3144 {
3145 	/* Approximation using 10 ranges based on output measurement on hw v1.2.
3146 	 * This seems close to the cubic mapping e.g. alsamixer uses. */
3147 	static const DECLARE_TLV_DB_RANGE(scale,
3148 		 0,  1, TLV_DB_MINMAX_ITEM(-5300, -4970),
3149 		 2,  5, TLV_DB_MINMAX_ITEM(-4710, -4160),
3150 		 6,  7, TLV_DB_MINMAX_ITEM(-3884, -3710),
3151 		 8, 14, TLV_DB_MINMAX_ITEM(-3443, -2560),
3152 		15, 16, TLV_DB_MINMAX_ITEM(-2475, -2324),
3153 		17, 19, TLV_DB_MINMAX_ITEM(-2228, -2031),
3154 		20, 26, TLV_DB_MINMAX_ITEM(-1910, -1393),
3155 		27, 31, TLV_DB_MINMAX_ITEM(-1322, -1032),
3156 		32, 40, TLV_DB_MINMAX_ITEM(-968, -490),
3157 		41, 50, TLV_DB_MINMAX_ITEM(-441, 0),
3158 	);
3159 
3160 	if (cval->min == 0 && cval->max == 50) {
3161 		usb_audio_info(mixer->chip, "applying DragonFly dB scale quirk (0-50 variant)\n");
3162 		kctl->tlv.p = scale;
3163 		kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
3164 		kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
3165 
3166 	} else if (cval->min == 0 && cval->max <= 1000) {
3167 		/* Some other clearly broken DragonFly variant.
3168 		 * At least a 0..53 variant (hw v1.0) exists.
3169 		 */
3170 		usb_audio_info(mixer->chip, "ignoring too narrow dB range on a DragonFly device");
3171 		kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
3172 	}
3173 }
3174 
3175 void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
3176 				  struct usb_mixer_elem_info *cval, int unitid,
3177 				  struct snd_kcontrol *kctl)
3178 {
3179 	switch (mixer->chip->usb_id) {
3180 	case USB_ID(0x21b4, 0x0081): /* AudioQuest DragonFly */
3181 		if (unitid == 7 && cval->control == UAC_FU_VOLUME)
3182 			snd_dragonfly_quirk_db_scale(mixer, cval, kctl);
3183 		break;
3184 	/* lowest playback value is muted on C-Media devices */
3185 	case USB_ID(0x0d8c, 0x000c):
3186 	case USB_ID(0x0d8c, 0x0014):
3187 		if (strstr(kctl->id.name, "Playback"))
3188 			cval->min_mute = 1;
3189 		break;
3190 	}
3191 }
3192 
3193