xref: /linux/sound/usb/mixer_quirks.c (revision 86f17f37a1fb4121229a76e6b9888072aadc334a)
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/bitfield.h>
18 #include <linux/hid.h>
19 #include <linux/init.h>
20 #include <linux/input.h>
21 #include <linux/math64.h>
22 #include <linux/slab.h>
23 #include <linux/usb.h>
24 #include <linux/usb/audio.h>
25 
26 #include <sound/asoundef.h>
27 #include <sound/core.h>
28 #include <sound/control.h>
29 #include <sound/hda_verbs.h>
30 #include <sound/hwdep.h>
31 #include <sound/info.h>
32 #include <sound/tlv.h>
33 
34 #include "usbaudio.h"
35 #include "mixer.h"
36 #include "mixer_quirks.h"
37 #include "mixer_scarlett.h"
38 #include "mixer_scarlett2.h"
39 #include "mixer_us16x08.h"
40 #include "mixer_s1810c.h"
41 #include "helper.h"
42 #include "fcp.h"
43 
44 struct std_mono_table {
45 	unsigned int unitid, control, cmask;
46 	int val_type;
47 	const char *name;
48 	snd_kcontrol_tlv_rw_t *tlv_callback;
49 };
50 
51 /* This function allows for the creation of standard UAC controls.
52  * See the quirks for M-Audio FTUs or Ebox-44.
53  * If you don't want to set a TLV callback pass NULL.
54  *
55  * Since there doesn't seem to be a devices that needs a multichannel
56  * version, we keep it mono for simplicity.
57  */
58 static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
59 					  unsigned int unitid,
60 					  unsigned int control,
61 					  unsigned int cmask,
62 					  int val_type,
63 					  unsigned int idx_off,
64 					  const char *name,
65 					  snd_kcontrol_tlv_rw_t *tlv_callback)
66 {
67 	struct usb_mixer_elem_info *cval;
68 	struct snd_kcontrol *kctl;
69 
70 	cval = kzalloc(sizeof(*cval), GFP_KERNEL);
71 	if (!cval)
72 		return -ENOMEM;
73 
74 	snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid);
75 	cval->val_type = val_type;
76 	cval->channels = 1;
77 	cval->control = control;
78 	cval->cmask = cmask;
79 	cval->idx_off = idx_off;
80 
81 	/* get_min_max() is called only for integer volumes later,
82 	 * so provide a short-cut for booleans
83 	 */
84 	cval->min = 0;
85 	cval->max = 1;
86 	cval->res = 0;
87 	cval->dBmin = 0;
88 	cval->dBmax = 0;
89 
90 	/* Create control */
91 	kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
92 	if (!kctl) {
93 		kfree(cval);
94 		return -ENOMEM;
95 	}
96 
97 	/* Set name */
98 	snprintf(kctl->id.name, sizeof(kctl->id.name), name);
99 	kctl->private_free = snd_usb_mixer_elem_free;
100 
101 	/* set TLV */
102 	if (tlv_callback) {
103 		kctl->tlv.c = tlv_callback;
104 		kctl->vd[0].access |=
105 			SNDRV_CTL_ELEM_ACCESS_TLV_READ |
106 			SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
107 	}
108 	/* Add control to mixer */
109 	return snd_usb_mixer_add_control(&cval->head, kctl);
110 }
111 
112 static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
113 				   unsigned int unitid,
114 				   unsigned int control,
115 				   unsigned int cmask,
116 				   int val_type,
117 				   const char *name,
118 				   snd_kcontrol_tlv_rw_t *tlv_callback)
119 {
120 	return snd_create_std_mono_ctl_offset(mixer, unitid, control, cmask,
121 					      val_type, 0 /* Offset */,
122 					      name, tlv_callback);
123 }
124 
125 /*
126  * Create a set of standard UAC controls from a table
127  */
128 static int snd_create_std_mono_table(struct usb_mixer_interface *mixer,
129 				     const struct std_mono_table *t)
130 {
131 	int err;
132 
133 	while (t->name) {
134 		err = snd_create_std_mono_ctl(mixer, t->unitid, t->control,
135 					      t->cmask, t->val_type, t->name,
136 					      t->tlv_callback);
137 		if (err < 0)
138 			return err;
139 		t++;
140 	}
141 
142 	return 0;
143 }
144 
145 static int add_single_ctl_with_resume(struct usb_mixer_interface *mixer,
146 				      int id,
147 				      usb_mixer_elem_resume_func_t resume,
148 				      const struct snd_kcontrol_new *knew,
149 				      struct usb_mixer_elem_list **listp)
150 {
151 	struct usb_mixer_elem_list *list;
152 	struct snd_kcontrol *kctl;
153 
154 	list = kzalloc(sizeof(*list), GFP_KERNEL);
155 	if (!list)
156 		return -ENOMEM;
157 	if (listp)
158 		*listp = list;
159 	list->mixer = mixer;
160 	list->id = id;
161 	list->resume = resume;
162 	kctl = snd_ctl_new1(knew, list);
163 	if (!kctl) {
164 		kfree(list);
165 		return -ENOMEM;
166 	}
167 	kctl->private_free = snd_usb_mixer_elem_free;
168 	/* don't use snd_usb_mixer_add_control() here, this is a special list element */
169 	return snd_usb_mixer_add_list(list, kctl, false);
170 }
171 
172 /*
173  * Sound Blaster remote control configuration
174  *
175  * format of remote control data:
176  * Extigy:       xx 00
177  * Audigy 2 NX:  06 80 xx 00 00 00
178  * Live! 24-bit: 06 80 xx yy 22 83
179  */
180 static const struct rc_config {
181 	u32 usb_id;
182 	u8  offset;
183 	u8  length;
184 	u8  packet_length;
185 	u8  min_packet_length; /* minimum accepted length of the URB result */
186 	u8  mute_mixer_id;
187 	u32 mute_code;
188 } rc_configs[] = {
189 	{ USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
190 	{ USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
191 	{ USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
192 	{ USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
193 	{ USB_ID(0x041e, 0x30df), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
194 	{ USB_ID(0x041e, 0x3237), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
195 	{ USB_ID(0x041e, 0x3263), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
196 	{ USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
197 };
198 
199 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
200 {
201 	struct usb_mixer_interface *mixer = urb->context;
202 	const struct rc_config *rc = mixer->rc_cfg;
203 	u32 code;
204 
205 	if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
206 		return;
207 
208 	code = mixer->rc_buffer[rc->offset];
209 	if (rc->length == 2)
210 		code |= mixer->rc_buffer[rc->offset + 1] << 8;
211 
212 	/* the Mute button actually changes the mixer control */
213 	if (code == rc->mute_code)
214 		snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
215 	mixer->rc_code = code;
216 	wake_up(&mixer->rc_waitq);
217 }
218 
219 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
220 				    long count, loff_t *offset)
221 {
222 	struct usb_mixer_interface *mixer = hw->private_data;
223 	int err;
224 	u32 rc_code;
225 
226 	if (count != 1 && count != 4)
227 		return -EINVAL;
228 	err = wait_event_interruptible(mixer->rc_waitq,
229 				       (rc_code = xchg(&mixer->rc_code, 0)) != 0);
230 	if (err == 0) {
231 		if (count == 1)
232 			err = put_user(rc_code, buf);
233 		else
234 			err = put_user(rc_code, (u32 __user *)buf);
235 	}
236 	return err < 0 ? err : count;
237 }
238 
239 static __poll_t snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
240 					poll_table *wait)
241 {
242 	struct usb_mixer_interface *mixer = hw->private_data;
243 
244 	poll_wait(file, &mixer->rc_waitq, wait);
245 	return mixer->rc_code ? EPOLLIN | EPOLLRDNORM : 0;
246 }
247 
248 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
249 {
250 	struct snd_hwdep *hwdep;
251 	int err, len, i;
252 
253 	for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
254 		if (rc_configs[i].usb_id == mixer->chip->usb_id)
255 			break;
256 	if (i >= ARRAY_SIZE(rc_configs))
257 		return 0;
258 	mixer->rc_cfg = &rc_configs[i];
259 
260 	len = mixer->rc_cfg->packet_length;
261 
262 	init_waitqueue_head(&mixer->rc_waitq);
263 	err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
264 	if (err < 0)
265 		return err;
266 	snprintf(hwdep->name, sizeof(hwdep->name),
267 		 "%s remote control", mixer->chip->card->shortname);
268 	hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
269 	hwdep->private_data = mixer;
270 	hwdep->ops.read = snd_usb_sbrc_hwdep_read;
271 	hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
272 	hwdep->exclusive = 1;
273 
274 	mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
275 	if (!mixer->rc_urb)
276 		return -ENOMEM;
277 	mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
278 	if (!mixer->rc_setup_packet) {
279 		usb_free_urb(mixer->rc_urb);
280 		mixer->rc_urb = NULL;
281 		return -ENOMEM;
282 	}
283 	mixer->rc_setup_packet->bRequestType =
284 		USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
285 	mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
286 	mixer->rc_setup_packet->wValue = cpu_to_le16(0);
287 	mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
288 	mixer->rc_setup_packet->wLength = cpu_to_le16(len);
289 	usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
290 			     usb_rcvctrlpipe(mixer->chip->dev, 0),
291 			     (u8 *)mixer->rc_setup_packet, mixer->rc_buffer, len,
292 			     snd_usb_soundblaster_remote_complete, mixer);
293 	return 0;
294 }
295 
296 #define snd_audigy2nx_led_info		snd_ctl_boolean_mono_info
297 
298 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
299 {
300 	ucontrol->value.integer.value[0] = kcontrol->private_value >> 8;
301 	return 0;
302 }
303 
304 static int snd_audigy2nx_led_update(struct usb_mixer_interface *mixer,
305 				    int value, int index)
306 {
307 	struct snd_usb_audio *chip = mixer->chip;
308 	int err;
309 
310 	CLASS(snd_usb_lock, pm)(chip);
311 	if (pm.err < 0)
312 		return pm.err;
313 
314 	if (chip->usb_id == USB_ID(0x041e, 0x3042) ||	/* USB X-Fi S51 */
315 	    chip->usb_id == USB_ID(0x041e, 0x30df))	/* USB X-Fi S51 Pro */
316 		err = snd_usb_ctl_msg(chip->dev,
317 				      usb_sndctrlpipe(chip->dev, 0), 0x24,
318 				      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
319 				      !value, 0, NULL, 0);
320 	else
321 		err = snd_usb_ctl_msg(chip->dev,
322 				      usb_sndctrlpipe(chip->dev, 0), 0x24,
323 				      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
324 				      value, index + 2, NULL, 0);
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 		CLASS(snd_usb_lock, pm)(mixer->chip);
436 		if (pm.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 		if (err == 3 && (buf[0] == 3 || buf[0] == 6))
444 			snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
445 		else
446 			snd_iprintf(buffer, "?\n");
447 	}
448 }
449 
450 /* EMU0204 */
451 static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol,
452 				      struct snd_ctl_elem_info *uinfo)
453 {
454 	static const char * const texts[2] = {"1/2", "3/4"};
455 
456 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
457 }
458 
459 static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
460 				     struct snd_ctl_elem_value *ucontrol)
461 {
462 	ucontrol->value.enumerated.item[0] = kcontrol->private_value;
463 	return 0;
464 }
465 
466 static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
467 					int value)
468 {
469 	struct snd_usb_audio *chip = mixer->chip;
470 	unsigned char buf[2];
471 
472 	CLASS(snd_usb_lock, pm)(chip);
473 	if (pm.err < 0)
474 		return pm.err;
475 
476 	buf[0] = 0x01;
477 	buf[1] = value ? 0x02 : 0x01;
478 	return snd_usb_ctl_msg(chip->dev,
479 			       usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
480 			       USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
481 			       0x0400, 0x0e00, buf, 2);
482 }
483 
484 static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
485 				     struct snd_ctl_elem_value *ucontrol)
486 {
487 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
488 	struct usb_mixer_interface *mixer = list->mixer;
489 	unsigned int value = ucontrol->value.enumerated.item[0];
490 	int err;
491 
492 	if (value > 1)
493 		return -EINVAL;
494 
495 	if (value == kcontrol->private_value)
496 		return 0;
497 
498 	kcontrol->private_value = value;
499 	err = snd_emu0204_ch_switch_update(mixer, value);
500 	return err < 0 ? err : 1;
501 }
502 
503 static int snd_emu0204_ch_switch_resume(struct usb_mixer_elem_list *list)
504 {
505 	return snd_emu0204_ch_switch_update(list->mixer,
506 					    list->kctl->private_value);
507 }
508 
509 static const struct snd_kcontrol_new snd_emu0204_control = {
510 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
511 	.name = "Front Jack Channels",
512 	.info = snd_emu0204_ch_switch_info,
513 	.get = snd_emu0204_ch_switch_get,
514 	.put = snd_emu0204_ch_switch_put,
515 	.private_value = 0,
516 };
517 
518 static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
519 {
520 	return add_single_ctl_with_resume(mixer, 0,
521 					  snd_emu0204_ch_switch_resume,
522 					  &snd_emu0204_control, NULL);
523 }
524 
525 #if IS_REACHABLE(CONFIG_INPUT)
526 /*
527  * Sony DualSense controller (PS5) jack detection
528  *
529  * Since this is an UAC 1 device, it doesn't support jack detection.
530  * However, the controller hid-playstation driver reports HP & MIC
531  * insert events through a dedicated input device.
532  */
533 
534 #define SND_DUALSENSE_JACK_OUT_TERM_ID 3
535 #define SND_DUALSENSE_JACK_IN_TERM_ID 4
536 
537 struct dualsense_mixer_elem_info {
538 	struct usb_mixer_elem_info info;
539 	struct input_handler ih;
540 	struct input_device_id id_table[2];
541 	bool connected;
542 };
543 
544 static void snd_dualsense_ih_event(struct input_handle *handle,
545 				   unsigned int type, unsigned int code,
546 				   int value)
547 {
548 	struct dualsense_mixer_elem_info *mei;
549 	struct usb_mixer_elem_list *me;
550 
551 	if (type != EV_SW)
552 		return;
553 
554 	mei = container_of(handle->handler, struct dualsense_mixer_elem_info, ih);
555 	me = &mei->info.head;
556 
557 	if ((me->id == SND_DUALSENSE_JACK_OUT_TERM_ID && code == SW_HEADPHONE_INSERT) ||
558 	    (me->id == SND_DUALSENSE_JACK_IN_TERM_ID && code == SW_MICROPHONE_INSERT)) {
559 		mei->connected = !!value;
560 		snd_ctl_notify(me->mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
561 			       &me->kctl->id);
562 	}
563 }
564 
565 static bool snd_dualsense_ih_match(struct input_handler *handler,
566 				   struct input_dev *dev)
567 {
568 	struct dualsense_mixer_elem_info *mei;
569 	struct usb_device *snd_dev;
570 	char *input_dev_path, *usb_dev_path;
571 	size_t usb_dev_path_len;
572 	bool match = false;
573 
574 	mei = container_of(handler, struct dualsense_mixer_elem_info, ih);
575 	snd_dev = mei->info.head.mixer->chip->dev;
576 
577 	input_dev_path = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
578 	if (!input_dev_path) {
579 		dev_warn(&snd_dev->dev, "Failed to get input dev path\n");
580 		return false;
581 	}
582 
583 	usb_dev_path = kobject_get_path(&snd_dev->dev.kobj, GFP_KERNEL);
584 	if (!usb_dev_path) {
585 		dev_warn(&snd_dev->dev, "Failed to get USB dev path\n");
586 		goto free_paths;
587 	}
588 
589 	/*
590 	 * Ensure the VID:PID matched input device supposedly owned by the
591 	 * hid-playstation driver belongs to the actual hardware handled by
592 	 * the current USB audio device, which implies input_dev_path being
593 	 * a subpath of usb_dev_path.
594 	 *
595 	 * This verification is necessary when there is more than one identical
596 	 * controller attached to the host system.
597 	 */
598 	usb_dev_path_len = strlen(usb_dev_path);
599 	if (usb_dev_path_len >= strlen(input_dev_path))
600 		goto free_paths;
601 
602 	usb_dev_path[usb_dev_path_len] = '/';
603 	match = !memcmp(input_dev_path, usb_dev_path, usb_dev_path_len + 1);
604 
605 free_paths:
606 	kfree(input_dev_path);
607 	kfree(usb_dev_path);
608 
609 	return match;
610 }
611 
612 static int snd_dualsense_ih_connect(struct input_handler *handler,
613 				    struct input_dev *dev,
614 				    const struct input_device_id *id)
615 {
616 	struct input_handle *handle;
617 	int err;
618 
619 	handle = kzalloc(sizeof(*handle), GFP_KERNEL);
620 	if (!handle)
621 		return -ENOMEM;
622 
623 	handle->dev = dev;
624 	handle->handler = handler;
625 	handle->name = handler->name;
626 
627 	err = input_register_handle(handle);
628 	if (err)
629 		goto err_free;
630 
631 	err = input_open_device(handle);
632 	if (err)
633 		goto err_unregister;
634 
635 	return 0;
636 
637 err_unregister:
638 	input_unregister_handle(handle);
639 err_free:
640 	kfree(handle);
641 	return err;
642 }
643 
644 static void snd_dualsense_ih_disconnect(struct input_handle *handle)
645 {
646 	input_close_device(handle);
647 	input_unregister_handle(handle);
648 	kfree(handle);
649 }
650 
651 static void snd_dualsense_ih_start(struct input_handle *handle)
652 {
653 	struct dualsense_mixer_elem_info *mei;
654 	struct usb_mixer_elem_list *me;
655 	int status = -1;
656 
657 	mei = container_of(handle->handler, struct dualsense_mixer_elem_info, ih);
658 	me = &mei->info.head;
659 
660 	if (me->id == SND_DUALSENSE_JACK_OUT_TERM_ID &&
661 	    test_bit(SW_HEADPHONE_INSERT, handle->dev->swbit))
662 		status = test_bit(SW_HEADPHONE_INSERT, handle->dev->sw);
663 	else if (me->id == SND_DUALSENSE_JACK_IN_TERM_ID &&
664 		 test_bit(SW_MICROPHONE_INSERT, handle->dev->swbit))
665 		status = test_bit(SW_MICROPHONE_INSERT, handle->dev->sw);
666 
667 	if (status >= 0) {
668 		mei->connected = !!status;
669 		snd_ctl_notify(me->mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
670 			       &me->kctl->id);
671 	}
672 }
673 
674 static int snd_dualsense_jack_get(struct snd_kcontrol *kctl,
675 				  struct snd_ctl_elem_value *ucontrol)
676 {
677 	struct dualsense_mixer_elem_info *mei = snd_kcontrol_chip(kctl);
678 
679 	ucontrol->value.integer.value[0] = mei->connected;
680 
681 	return 0;
682 }
683 
684 static const struct snd_kcontrol_new snd_dualsense_jack_control = {
685 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
686 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
687 	.info = snd_ctl_boolean_mono_info,
688 	.get = snd_dualsense_jack_get,
689 };
690 
691 static int snd_dualsense_resume_jack(struct usb_mixer_elem_list *list)
692 {
693 	snd_ctl_notify(list->mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
694 		       &list->kctl->id);
695 	return 0;
696 }
697 
698 static void snd_dualsense_mixer_elem_free(struct snd_kcontrol *kctl)
699 {
700 	struct dualsense_mixer_elem_info *mei = snd_kcontrol_chip(kctl);
701 
702 	if (mei->ih.event)
703 		input_unregister_handler(&mei->ih);
704 
705 	snd_usb_mixer_elem_free(kctl);
706 }
707 
708 static int snd_dualsense_jack_create(struct usb_mixer_interface *mixer,
709 				     const char *name, bool is_output)
710 {
711 	struct dualsense_mixer_elem_info *mei;
712 	struct input_device_id *idev_id;
713 	struct snd_kcontrol *kctl;
714 	int err;
715 
716 	mei = kzalloc(sizeof(*mei), GFP_KERNEL);
717 	if (!mei)
718 		return -ENOMEM;
719 
720 	snd_usb_mixer_elem_init_std(&mei->info.head, mixer,
721 				    is_output ? SND_DUALSENSE_JACK_OUT_TERM_ID :
722 						SND_DUALSENSE_JACK_IN_TERM_ID);
723 
724 	mei->info.head.resume = snd_dualsense_resume_jack;
725 	mei->info.val_type = USB_MIXER_BOOLEAN;
726 	mei->info.channels = 1;
727 	mei->info.min = 0;
728 	mei->info.max = 1;
729 
730 	kctl = snd_ctl_new1(&snd_dualsense_jack_control, mei);
731 	if (!kctl) {
732 		kfree(mei);
733 		return -ENOMEM;
734 	}
735 
736 	strscpy(kctl->id.name, name, sizeof(kctl->id.name));
737 	kctl->private_free = snd_dualsense_mixer_elem_free;
738 
739 	err = snd_usb_mixer_add_control(&mei->info.head, kctl);
740 	if (err)
741 		return err;
742 
743 	idev_id = &mei->id_table[0];
744 	idev_id->flags = INPUT_DEVICE_ID_MATCH_VENDOR | INPUT_DEVICE_ID_MATCH_PRODUCT |
745 			 INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_SWBIT;
746 	idev_id->vendor = USB_ID_VENDOR(mixer->chip->usb_id);
747 	idev_id->product = USB_ID_PRODUCT(mixer->chip->usb_id);
748 	idev_id->evbit[BIT_WORD(EV_SW)] = BIT_MASK(EV_SW);
749 	if (is_output)
750 		idev_id->swbit[BIT_WORD(SW_HEADPHONE_INSERT)] = BIT_MASK(SW_HEADPHONE_INSERT);
751 	else
752 		idev_id->swbit[BIT_WORD(SW_MICROPHONE_INSERT)] = BIT_MASK(SW_MICROPHONE_INSERT);
753 
754 	mei->ih.event = snd_dualsense_ih_event;
755 	mei->ih.match = snd_dualsense_ih_match;
756 	mei->ih.connect = snd_dualsense_ih_connect;
757 	mei->ih.disconnect = snd_dualsense_ih_disconnect;
758 	mei->ih.start = snd_dualsense_ih_start;
759 	mei->ih.name = name;
760 	mei->ih.id_table = mei->id_table;
761 
762 	err = input_register_handler(&mei->ih);
763 	if (err) {
764 		dev_warn(&mixer->chip->dev->dev,
765 			 "Could not register input handler: %d\n", err);
766 		mei->ih.event = NULL;
767 	}
768 
769 	return 0;
770 }
771 
772 static int snd_dualsense_controls_create(struct usb_mixer_interface *mixer)
773 {
774 	int err;
775 
776 	err = snd_dualsense_jack_create(mixer, "Headphone Jack", true);
777 	if (err < 0)
778 		return err;
779 
780 	return snd_dualsense_jack_create(mixer, "Headset Mic Jack", false);
781 }
782 #endif /* IS_REACHABLE(CONFIG_INPUT) */
783 
784 /* ASUS Xonar U1 / U3 controls */
785 
786 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
787 				   struct snd_ctl_elem_value *ucontrol)
788 {
789 	ucontrol->value.integer.value[0] = !!(kcontrol->private_value & 0x02);
790 	return 0;
791 }
792 
793 static int snd_xonar_u1_switch_update(struct usb_mixer_interface *mixer,
794 				      unsigned char status)
795 {
796 	struct snd_usb_audio *chip = mixer->chip;
797 
798 	CLASS(snd_usb_lock, pm)(chip);
799 	if (pm.err < 0)
800 		return pm.err;
801 	return snd_usb_ctl_msg(chip->dev,
802 			       usb_sndctrlpipe(chip->dev, 0), 0x08,
803 			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
804 			       50, 0, &status, 1);
805 }
806 
807 static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
808 				   struct snd_ctl_elem_value *ucontrol)
809 {
810 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
811 	u8 old_status, new_status;
812 	int err;
813 
814 	old_status = kcontrol->private_value;
815 	if (ucontrol->value.integer.value[0])
816 		new_status = old_status | 0x02;
817 	else
818 		new_status = old_status & ~0x02;
819 	if (new_status == old_status)
820 		return 0;
821 
822 	kcontrol->private_value = new_status;
823 	err = snd_xonar_u1_switch_update(list->mixer, new_status);
824 	return err < 0 ? err : 1;
825 }
826 
827 static int snd_xonar_u1_switch_resume(struct usb_mixer_elem_list *list)
828 {
829 	return snd_xonar_u1_switch_update(list->mixer,
830 					  list->kctl->private_value);
831 }
832 
833 static const struct snd_kcontrol_new snd_xonar_u1_output_switch = {
834 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
835 	.name = "Digital Playback Switch",
836 	.info = snd_ctl_boolean_mono_info,
837 	.get = snd_xonar_u1_switch_get,
838 	.put = snd_xonar_u1_switch_put,
839 	.private_value = 0x05,
840 };
841 
842 static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
843 {
844 	return add_single_ctl_with_resume(mixer, 0,
845 					  snd_xonar_u1_switch_resume,
846 					  &snd_xonar_u1_output_switch, NULL);
847 }
848 
849 /* Digidesign Mbox 1 helper functions */
850 
851 static int snd_mbox1_is_spdif_synced(struct snd_usb_audio *chip)
852 {
853 	unsigned char buff[3];
854 	int err;
855 	int is_spdif_synced;
856 
857 	/* Read clock source */
858 	err = snd_usb_ctl_msg(chip->dev,
859 			      usb_rcvctrlpipe(chip->dev, 0), 0x81,
860 			      USB_DIR_IN |
861 			      USB_TYPE_CLASS |
862 			      USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
863 	if (err < 0)
864 		return err;
865 
866 	/* spdif sync: buff is all zeroes */
867 	is_spdif_synced = !(buff[0] | buff[1] | buff[2]);
868 	return is_spdif_synced;
869 }
870 
871 static int snd_mbox1_set_clk_source(struct snd_usb_audio *chip, int rate_or_zero)
872 {
873 	/* 2 possibilities:	Internal    -> expects sample rate
874 	 *			S/PDIF sync -> expects rate = 0
875 	 */
876 	unsigned char buff[3];
877 
878 	buff[0] = (rate_or_zero >>  0) & 0xff;
879 	buff[1] = (rate_or_zero >>  8) & 0xff;
880 	buff[2] = (rate_or_zero >> 16) & 0xff;
881 
882 	/* Set clock source */
883 	return snd_usb_ctl_msg(chip->dev,
884 			       usb_sndctrlpipe(chip->dev, 0), 0x1,
885 			       USB_TYPE_CLASS |
886 			       USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
887 }
888 
889 static int snd_mbox1_is_spdif_input(struct snd_usb_audio *chip)
890 {
891 	/* Hardware gives 2 possibilities:	ANALOG Source  -> 0x01
892 	 *					S/PDIF Source  -> 0x02
893 	 */
894 	int err;
895 	unsigned char source[1];
896 
897 	/* Read input source */
898 	err = snd_usb_ctl_msg(chip->dev,
899 			      usb_rcvctrlpipe(chip->dev, 0), 0x81,
900 			      USB_DIR_IN |
901 			      USB_TYPE_CLASS |
902 			      USB_RECIP_INTERFACE, 0x00, 0x500, source, 1);
903 	if (err < 0)
904 		return err;
905 
906 	return (source[0] == 2);
907 }
908 
909 static int snd_mbox1_set_input_source(struct snd_usb_audio *chip, int is_spdif)
910 {
911 	/* NB: Setting the input source to S/PDIF resets the clock source to S/PDIF
912 	 * Hardware expects 2 possibilities:	ANALOG Source  -> 0x01
913 	 *					S/PDIF Source  -> 0x02
914 	 */
915 	unsigned char buff[1];
916 
917 	buff[0] = (is_spdif & 1) + 1;
918 
919 	/* Set input source */
920 	return snd_usb_ctl_msg(chip->dev,
921 			       usb_sndctrlpipe(chip->dev, 0), 0x1,
922 			       USB_TYPE_CLASS |
923 			       USB_RECIP_INTERFACE, 0x00, 0x500, buff, 1);
924 }
925 
926 /* Digidesign Mbox 1 clock source switch (internal/spdif) */
927 
928 static int snd_mbox1_clk_switch_get(struct snd_kcontrol *kctl,
929 				    struct snd_ctl_elem_value *ucontrol)
930 {
931 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
932 	struct snd_usb_audio *chip = list->mixer->chip;
933 	int err;
934 
935 	CLASS(snd_usb_lock, pm)(chip);
936 	if (pm.err < 0)
937 		return pm.err;
938 
939 	err = snd_mbox1_is_spdif_synced(chip);
940 	if (err < 0)
941 		return err;
942 
943 	kctl->private_value = err;
944 	ucontrol->value.enumerated.item[0] = kctl->private_value;
945 	return 0;
946 }
947 
948 static int snd_mbox1_clk_switch_update(struct usb_mixer_interface *mixer, int is_spdif_sync)
949 {
950 	struct snd_usb_audio *chip = mixer->chip;
951 	int err;
952 
953 	CLASS(snd_usb_lock, pm)(chip);
954 	if (pm.err < 0)
955 		return pm.err;
956 
957 	err = snd_mbox1_is_spdif_input(chip);
958 	if (err < 0)
959 		return err;
960 
961 	err = snd_mbox1_is_spdif_synced(chip);
962 	if (err < 0)
963 		return err;
964 
965 	/* FIXME: hardcoded sample rate */
966 	err = snd_mbox1_set_clk_source(chip, is_spdif_sync ? 0 : 48000);
967 	if (err < 0)
968 		return err;
969 
970 	return snd_mbox1_is_spdif_synced(chip);
971 }
972 
973 static int snd_mbox1_clk_switch_put(struct snd_kcontrol *kctl,
974 				    struct snd_ctl_elem_value *ucontrol)
975 {
976 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
977 	struct usb_mixer_interface *mixer = list->mixer;
978 	int err;
979 	bool cur_val, new_val;
980 
981 	cur_val = kctl->private_value;
982 	new_val = ucontrol->value.enumerated.item[0];
983 	if (cur_val == new_val)
984 		return 0;
985 
986 	kctl->private_value = new_val;
987 	err = snd_mbox1_clk_switch_update(mixer, new_val);
988 	return err < 0 ? err : 1;
989 }
990 
991 static int snd_mbox1_clk_switch_info(struct snd_kcontrol *kcontrol,
992 				     struct snd_ctl_elem_info *uinfo)
993 {
994 	static const char *const texts[2] = {
995 		"Internal",
996 		"S/PDIF"
997 	};
998 
999 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
1000 }
1001 
1002 static int snd_mbox1_clk_switch_resume(struct usb_mixer_elem_list *list)
1003 {
1004 	return snd_mbox1_clk_switch_update(list->mixer, list->kctl->private_value);
1005 }
1006 
1007 /* Digidesign Mbox 1 input source switch (analog/spdif) */
1008 
1009 static int snd_mbox1_src_switch_get(struct snd_kcontrol *kctl,
1010 				    struct snd_ctl_elem_value *ucontrol)
1011 {
1012 	ucontrol->value.enumerated.item[0] = kctl->private_value;
1013 	return 0;
1014 }
1015 
1016 static int snd_mbox1_src_switch_update(struct usb_mixer_interface *mixer, int is_spdif_input)
1017 {
1018 	struct snd_usb_audio *chip = mixer->chip;
1019 	int err;
1020 
1021 	CLASS(snd_usb_lock, pm)(chip);
1022 	if (pm.err < 0)
1023 		return pm.err;
1024 
1025 	err = snd_mbox1_is_spdif_input(chip);
1026 	if (err < 0)
1027 		return err;
1028 
1029 	err = snd_mbox1_set_input_source(chip, is_spdif_input);
1030 	if (err < 0)
1031 		return err;
1032 
1033 	err = snd_mbox1_is_spdif_input(chip);
1034 	if (err < 0)
1035 		return err;
1036 
1037 	return snd_mbox1_is_spdif_synced(chip);
1038 }
1039 
1040 static int snd_mbox1_src_switch_put(struct snd_kcontrol *kctl,
1041 				    struct snd_ctl_elem_value *ucontrol)
1042 {
1043 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
1044 	struct usb_mixer_interface *mixer = list->mixer;
1045 	int err;
1046 	bool cur_val, new_val;
1047 
1048 	cur_val = kctl->private_value;
1049 	new_val = ucontrol->value.enumerated.item[0];
1050 	if (cur_val == new_val)
1051 		return 0;
1052 
1053 	kctl->private_value = new_val;
1054 	err = snd_mbox1_src_switch_update(mixer, new_val);
1055 	return err < 0 ? err : 1;
1056 }
1057 
1058 static int snd_mbox1_src_switch_info(struct snd_kcontrol *kcontrol,
1059 				     struct snd_ctl_elem_info *uinfo)
1060 {
1061 	static const char *const texts[2] = {
1062 		"Analog",
1063 		"S/PDIF"
1064 	};
1065 
1066 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
1067 }
1068 
1069 static int snd_mbox1_src_switch_resume(struct usb_mixer_elem_list *list)
1070 {
1071 	return snd_mbox1_src_switch_update(list->mixer, list->kctl->private_value);
1072 }
1073 
1074 static const struct snd_kcontrol_new snd_mbox1_clk_switch = {
1075 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1076 	.name = "Clock Source",
1077 	.index = 0,
1078 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
1079 	.info = snd_mbox1_clk_switch_info,
1080 	.get = snd_mbox1_clk_switch_get,
1081 	.put = snd_mbox1_clk_switch_put,
1082 	.private_value = 0
1083 };
1084 
1085 static const struct snd_kcontrol_new snd_mbox1_src_switch = {
1086 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1087 	.name = "Input Source",
1088 	.index = 1,
1089 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
1090 	.info = snd_mbox1_src_switch_info,
1091 	.get = snd_mbox1_src_switch_get,
1092 	.put = snd_mbox1_src_switch_put,
1093 	.private_value = 0
1094 };
1095 
1096 static int snd_mbox1_controls_create(struct usb_mixer_interface *mixer)
1097 {
1098 	int err;
1099 
1100 	err = add_single_ctl_with_resume(mixer, 0,
1101 					 snd_mbox1_clk_switch_resume,
1102 					 &snd_mbox1_clk_switch, NULL);
1103 	if (err < 0)
1104 		return err;
1105 
1106 	return add_single_ctl_with_resume(mixer, 1,
1107 					  snd_mbox1_src_switch_resume,
1108 					  &snd_mbox1_src_switch, NULL);
1109 }
1110 
1111 /* Native Instruments device quirks */
1112 
1113 #define _MAKE_NI_CONTROL(bRequest, wIndex) ((bRequest) << 16 | (wIndex))
1114 
1115 static int snd_ni_control_init_val(struct usb_mixer_interface *mixer,
1116 				   struct snd_kcontrol *kctl)
1117 {
1118 	struct usb_device *dev = mixer->chip->dev;
1119 	unsigned int pval = kctl->private_value;
1120 	u8 value;
1121 	int err;
1122 
1123 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
1124 			      (pval >> 16) & 0xff,
1125 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
1126 			      0, pval & 0xffff, &value, 1);
1127 	if (err < 0) {
1128 		dev_err(&dev->dev,
1129 			"unable to issue vendor read request (ret = %d)", err);
1130 		return err;
1131 	}
1132 
1133 	kctl->private_value |= ((unsigned int)value << 24);
1134 	return 0;
1135 }
1136 
1137 static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
1138 					     struct snd_ctl_elem_value *ucontrol)
1139 {
1140 	ucontrol->value.integer.value[0] = kcontrol->private_value >> 24;
1141 	return 0;
1142 }
1143 
1144 static int snd_ni_update_cur_val(struct usb_mixer_elem_list *list)
1145 {
1146 	struct snd_usb_audio *chip = list->mixer->chip;
1147 	unsigned int pval = list->kctl->private_value;
1148 
1149 	CLASS(snd_usb_lock, pm)(chip);
1150 	if (pm.err < 0)
1151 		return pm.err;
1152 	return usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
1153 			       (pval >> 16) & 0xff,
1154 			       USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
1155 			       pval >> 24, pval & 0xffff, NULL, 0, 1000);
1156 }
1157 
1158 static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
1159 					     struct snd_ctl_elem_value *ucontrol)
1160 {
1161 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1162 	u8 oldval = (kcontrol->private_value >> 24) & 0xff;
1163 	u8 newval = ucontrol->value.integer.value[0];
1164 	int err;
1165 
1166 	if (oldval == newval)
1167 		return 0;
1168 
1169 	kcontrol->private_value &= ~(0xff << 24);
1170 	kcontrol->private_value |= (unsigned int)newval << 24;
1171 	err = snd_ni_update_cur_val(list);
1172 	return err < 0 ? err : 1;
1173 }
1174 
1175 static const struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
1176 	{
1177 		.name = "Direct Thru Channel A",
1178 		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
1179 	},
1180 	{
1181 		.name = "Direct Thru Channel B",
1182 		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
1183 	},
1184 	{
1185 		.name = "Phono Input Channel A",
1186 		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
1187 	},
1188 	{
1189 		.name = "Phono Input Channel B",
1190 		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
1191 	},
1192 };
1193 
1194 static const struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
1195 	{
1196 		.name = "Direct Thru Channel A",
1197 		.private_value = _MAKE_NI_CONTROL(0x01, 0x03),
1198 	},
1199 	{
1200 		.name = "Direct Thru Channel B",
1201 		.private_value = _MAKE_NI_CONTROL(0x01, 0x05),
1202 	},
1203 	{
1204 		.name = "Direct Thru Channel C",
1205 		.private_value = _MAKE_NI_CONTROL(0x01, 0x07),
1206 	},
1207 	{
1208 		.name = "Direct Thru Channel D",
1209 		.private_value = _MAKE_NI_CONTROL(0x01, 0x09),
1210 	},
1211 	{
1212 		.name = "Phono Input Channel A",
1213 		.private_value = _MAKE_NI_CONTROL(0x02, 0x03),
1214 	},
1215 	{
1216 		.name = "Phono Input Channel B",
1217 		.private_value = _MAKE_NI_CONTROL(0x02, 0x05),
1218 	},
1219 	{
1220 		.name = "Phono Input Channel C",
1221 		.private_value = _MAKE_NI_CONTROL(0x02, 0x07),
1222 	},
1223 	{
1224 		.name = "Phono Input Channel D",
1225 		.private_value = _MAKE_NI_CONTROL(0x02, 0x09),
1226 	},
1227 };
1228 
1229 static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
1230 					      const struct snd_kcontrol_new *kc,
1231 					      unsigned int count)
1232 {
1233 	int i, err = 0;
1234 	struct snd_kcontrol_new template = {
1235 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1236 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
1237 		.get = snd_nativeinstruments_control_get,
1238 		.put = snd_nativeinstruments_control_put,
1239 		.info = snd_ctl_boolean_mono_info,
1240 	};
1241 
1242 	for (i = 0; i < count; i++) {
1243 		struct usb_mixer_elem_list *list;
1244 
1245 		template.name = kc[i].name;
1246 		template.private_value = kc[i].private_value;
1247 
1248 		err = add_single_ctl_with_resume(mixer, 0,
1249 						 snd_ni_update_cur_val,
1250 						 &template, &list);
1251 		if (err < 0)
1252 			break;
1253 		snd_ni_control_init_val(mixer, list->kctl);
1254 	}
1255 
1256 	return err;
1257 }
1258 
1259 /* M-Audio FastTrack Ultra quirks */
1260 /* FTU Effect switch (also used by C400/C600) */
1261 static int snd_ftu_eff_switch_info(struct snd_kcontrol *kcontrol,
1262 				   struct snd_ctl_elem_info *uinfo)
1263 {
1264 	static const char *const texts[8] = {
1265 		"Room 1", "Room 2", "Room 3", "Hall 1",
1266 		"Hall 2", "Plate", "Delay", "Echo"
1267 	};
1268 
1269 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
1270 }
1271 
1272 static int snd_ftu_eff_switch_init(struct usb_mixer_interface *mixer,
1273 				   struct snd_kcontrol *kctl)
1274 {
1275 	struct usb_device *dev = mixer->chip->dev;
1276 	unsigned int pval = kctl->private_value;
1277 	int err;
1278 	unsigned char value[2];
1279 
1280 	value[0] = 0x00;
1281 	value[1] = 0x00;
1282 
1283 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
1284 			      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
1285 			      pval & 0xff00,
1286 			      snd_usb_ctrl_intf(mixer->hostif) | ((pval & 0xff) << 8),
1287 			      value, 2);
1288 	if (err < 0)
1289 		return err;
1290 
1291 	kctl->private_value |= (unsigned int)value[0] << 24;
1292 	return 0;
1293 }
1294 
1295 static int snd_ftu_eff_switch_get(struct snd_kcontrol *kctl,
1296 				  struct snd_ctl_elem_value *ucontrol)
1297 {
1298 	ucontrol->value.enumerated.item[0] = kctl->private_value >> 24;
1299 	return 0;
1300 }
1301 
1302 static int snd_ftu_eff_switch_update(struct usb_mixer_elem_list *list)
1303 {
1304 	struct snd_usb_audio *chip = list->mixer->chip;
1305 	unsigned int pval = list->kctl->private_value;
1306 	unsigned char value[2];
1307 
1308 	value[0] = pval >> 24;
1309 	value[1] = 0;
1310 
1311 	CLASS(snd_usb_lock, pm)(chip);
1312 	if (pm.err < 0)
1313 		return pm.err;
1314 	return snd_usb_ctl_msg(chip->dev,
1315 			       usb_sndctrlpipe(chip->dev, 0),
1316 			       UAC_SET_CUR,
1317 			       USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
1318 			       pval & 0xff00,
1319 			       snd_usb_ctrl_intf(list->mixer->hostif) | ((pval & 0xff) << 8),
1320 			       value, 2);
1321 }
1322 
1323 static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl,
1324 				  struct snd_ctl_elem_value *ucontrol)
1325 {
1326 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
1327 	unsigned int pval = list->kctl->private_value;
1328 	int cur_val, err, new_val;
1329 
1330 	cur_val = pval >> 24;
1331 	new_val = ucontrol->value.enumerated.item[0];
1332 	if (cur_val == new_val)
1333 		return 0;
1334 
1335 	kctl->private_value &= ~(0xff << 24);
1336 	kctl->private_value |= new_val << 24;
1337 	err = snd_ftu_eff_switch_update(list);
1338 	return err < 0 ? err : 1;
1339 }
1340 
1341 static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
1342 					int validx, int bUnitID)
1343 {
1344 	static struct snd_kcontrol_new template = {
1345 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1346 		.name = "Effect Program Switch",
1347 		.index = 0,
1348 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
1349 		.info = snd_ftu_eff_switch_info,
1350 		.get = snd_ftu_eff_switch_get,
1351 		.put = snd_ftu_eff_switch_put
1352 	};
1353 	struct usb_mixer_elem_list *list;
1354 	int err;
1355 
1356 	err = add_single_ctl_with_resume(mixer, bUnitID,
1357 					 snd_ftu_eff_switch_update,
1358 					 &template, &list);
1359 	if (err < 0)
1360 		return err;
1361 	list->kctl->private_value = (validx << 8) | bUnitID;
1362 	snd_ftu_eff_switch_init(mixer, list->kctl);
1363 	return 0;
1364 }
1365 
1366 /* Create volume controls for FTU devices*/
1367 static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
1368 {
1369 	char name[64];
1370 	unsigned int control, cmask;
1371 	int in, out, err;
1372 
1373 	const unsigned int id = 5;
1374 	const int val_type = USB_MIXER_S16;
1375 
1376 	for (out = 0; out < 8; out++) {
1377 		control = out + 1;
1378 		for (in = 0; in < 8; in++) {
1379 			cmask = BIT(in);
1380 			snprintf(name, sizeof(name),
1381 				 "AIn%d - Out%d Capture Volume",
1382 				 in  + 1, out + 1);
1383 			err = snd_create_std_mono_ctl(mixer, id, control,
1384 						      cmask, val_type, name,
1385 						      &snd_usb_mixer_vol_tlv);
1386 			if (err < 0)
1387 				return err;
1388 		}
1389 		for (in = 8; in < 16; in++) {
1390 			cmask = BIT(in);
1391 			snprintf(name, sizeof(name),
1392 				 "DIn%d - Out%d Playback Volume",
1393 				 in - 7, out + 1);
1394 			err = snd_create_std_mono_ctl(mixer, id, control,
1395 						      cmask, val_type, name,
1396 						      &snd_usb_mixer_vol_tlv);
1397 			if (err < 0)
1398 				return err;
1399 		}
1400 	}
1401 
1402 	return 0;
1403 }
1404 
1405 /* This control needs a volume quirk, see mixer.c */
1406 static int snd_ftu_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1407 {
1408 	static const char name[] = "Effect Volume";
1409 	const unsigned int id = 6;
1410 	const int val_type = USB_MIXER_U8;
1411 	const unsigned int control = 2;
1412 	const unsigned int cmask = 0;
1413 
1414 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1415 					name, snd_usb_mixer_vol_tlv);
1416 }
1417 
1418 /* This control needs a volume quirk, see mixer.c */
1419 static int snd_ftu_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1420 {
1421 	static const char name[] = "Effect Duration";
1422 	const unsigned int id = 6;
1423 	const int val_type = USB_MIXER_S16;
1424 	const unsigned int control = 3;
1425 	const unsigned int cmask = 0;
1426 
1427 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1428 					name, snd_usb_mixer_vol_tlv);
1429 }
1430 
1431 /* This control needs a volume quirk, see mixer.c */
1432 static int snd_ftu_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1433 {
1434 	static const char name[] = "Effect Feedback Volume";
1435 	const unsigned int id = 6;
1436 	const int val_type = USB_MIXER_U8;
1437 	const unsigned int control = 4;
1438 	const unsigned int cmask = 0;
1439 
1440 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1441 					name, NULL);
1442 }
1443 
1444 static int snd_ftu_create_effect_return_ctls(struct usb_mixer_interface *mixer)
1445 {
1446 	unsigned int cmask;
1447 	int err, ch;
1448 	char name[48];
1449 
1450 	const unsigned int id = 7;
1451 	const int val_type = USB_MIXER_S16;
1452 	const unsigned int control = 7;
1453 
1454 	for (ch = 0; ch < 4; ++ch) {
1455 		cmask = BIT(ch);
1456 		snprintf(name, sizeof(name),
1457 			 "Effect Return %d Volume", ch + 1);
1458 		err = snd_create_std_mono_ctl(mixer, id, control,
1459 					      cmask, val_type, name,
1460 					      snd_usb_mixer_vol_tlv);
1461 		if (err < 0)
1462 			return err;
1463 	}
1464 
1465 	return 0;
1466 }
1467 
1468 static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
1469 {
1470 	unsigned int  cmask;
1471 	int err, ch;
1472 	char name[48];
1473 
1474 	const unsigned int id = 5;
1475 	const int val_type = USB_MIXER_S16;
1476 	const unsigned int control = 9;
1477 
1478 	for (ch = 0; ch < 8; ++ch) {
1479 		cmask = BIT(ch);
1480 		snprintf(name, sizeof(name),
1481 			 "Effect Send AIn%d Volume", ch + 1);
1482 		err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1483 					      val_type, name,
1484 					      snd_usb_mixer_vol_tlv);
1485 		if (err < 0)
1486 			return err;
1487 	}
1488 	for (ch = 8; ch < 16; ++ch) {
1489 		cmask = BIT(ch);
1490 		snprintf(name, sizeof(name),
1491 			 "Effect Send DIn%d Volume", ch - 7);
1492 		err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1493 					      val_type, name,
1494 					      snd_usb_mixer_vol_tlv);
1495 		if (err < 0)
1496 			return err;
1497 	}
1498 	return 0;
1499 }
1500 
1501 static int snd_ftu_create_mixer(struct usb_mixer_interface *mixer)
1502 {
1503 	int err;
1504 
1505 	err = snd_ftu_create_volume_ctls(mixer);
1506 	if (err < 0)
1507 		return err;
1508 
1509 	err = snd_ftu_create_effect_switch(mixer, 1, 6);
1510 	if (err < 0)
1511 		return err;
1512 
1513 	err = snd_ftu_create_effect_volume_ctl(mixer);
1514 	if (err < 0)
1515 		return err;
1516 
1517 	err = snd_ftu_create_effect_duration_ctl(mixer);
1518 	if (err < 0)
1519 		return err;
1520 
1521 	err = snd_ftu_create_effect_feedback_ctl(mixer);
1522 	if (err < 0)
1523 		return err;
1524 
1525 	err = snd_ftu_create_effect_return_ctls(mixer);
1526 	if (err < 0)
1527 		return err;
1528 
1529 	err = snd_ftu_create_effect_send_ctls(mixer);
1530 	if (err < 0)
1531 		return err;
1532 
1533 	return 0;
1534 }
1535 
1536 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
1537 			       unsigned char samplerate_id)
1538 {
1539 	struct usb_mixer_interface *mixer;
1540 	struct usb_mixer_elem_info *cval;
1541 	int unitid = 12; /* SampleRate ExtensionUnit ID */
1542 
1543 	list_for_each_entry(mixer, &chip->mixer_list, list) {
1544 		if (mixer->id_elems[unitid]) {
1545 			cval = mixer_elem_list_to_info(mixer->id_elems[unitid]);
1546 			snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
1547 						    cval->control << 8,
1548 						    samplerate_id);
1549 			snd_usb_mixer_notify_id(mixer, unitid);
1550 			break;
1551 		}
1552 	}
1553 }
1554 
1555 /* M-Audio Fast Track C400/C600 */
1556 /* C400/C600 volume controls, this control needs a volume quirk, see mixer.c */
1557 static int snd_c400_create_vol_ctls(struct usb_mixer_interface *mixer)
1558 {
1559 	char name[64];
1560 	unsigned int cmask, offset;
1561 	int out, chan, err;
1562 	int num_outs = 0;
1563 	int num_ins = 0;
1564 
1565 	const unsigned int id = 0x40;
1566 	const int val_type = USB_MIXER_S16;
1567 	const int control = 1;
1568 
1569 	switch (mixer->chip->usb_id) {
1570 	case USB_ID(0x0763, 0x2030):
1571 		num_outs = 6;
1572 		num_ins = 4;
1573 		break;
1574 	case USB_ID(0x0763, 0x2031):
1575 		num_outs = 8;
1576 		num_ins = 6;
1577 		break;
1578 	}
1579 
1580 	for (chan = 0; chan < num_outs + num_ins; chan++) {
1581 		for (out = 0; out < num_outs; out++) {
1582 			if (chan < num_outs) {
1583 				snprintf(name, sizeof(name),
1584 					 "PCM%d-Out%d Playback Volume",
1585 					 chan + 1, out + 1);
1586 			} else {
1587 				snprintf(name, sizeof(name),
1588 					 "In%d-Out%d Playback Volume",
1589 					 chan - num_outs + 1, out + 1);
1590 			}
1591 
1592 			cmask = (out == 0) ? 0 : BIT(out - 1);
1593 			offset = chan * num_outs;
1594 			err = snd_create_std_mono_ctl_offset(mixer, id, control,
1595 							     cmask, val_type, offset, name,
1596 							     &snd_usb_mixer_vol_tlv);
1597 			if (err < 0)
1598 				return err;
1599 		}
1600 	}
1601 
1602 	return 0;
1603 }
1604 
1605 /* This control needs a volume quirk, see mixer.c */
1606 static int snd_c400_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1607 {
1608 	static const char name[] = "Effect Volume";
1609 	const unsigned int id = 0x43;
1610 	const int val_type = USB_MIXER_U8;
1611 	const unsigned int control = 3;
1612 	const unsigned int cmask = 0;
1613 
1614 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1615 				       name, snd_usb_mixer_vol_tlv);
1616 }
1617 
1618 /* This control needs a volume quirk, see mixer.c */
1619 static int snd_c400_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1620 {
1621 	static const char name[] = "Effect Duration";
1622 	const unsigned int id = 0x43;
1623 	const int val_type = USB_MIXER_S16;
1624 	const unsigned int control = 4;
1625 	const unsigned int cmask = 0;
1626 
1627 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1628 				       name, snd_usb_mixer_vol_tlv);
1629 }
1630 
1631 /* This control needs a volume quirk, see mixer.c */
1632 static int snd_c400_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1633 {
1634 	static const char name[] = "Effect Feedback Volume";
1635 	const unsigned int id = 0x43;
1636 	const int val_type = USB_MIXER_U8;
1637 	const unsigned int control = 5;
1638 	const unsigned int cmask = 0;
1639 
1640 	return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1641 				       name, NULL);
1642 }
1643 
1644 static int snd_c400_create_effect_vol_ctls(struct usb_mixer_interface *mixer)
1645 {
1646 	char name[64];
1647 	unsigned int cmask;
1648 	int chan, err;
1649 	int num_outs = 0;
1650 	int num_ins = 0;
1651 
1652 	const unsigned int id = 0x42;
1653 	const int val_type = USB_MIXER_S16;
1654 	const int control = 1;
1655 
1656 	switch (mixer->chip->usb_id) {
1657 	case USB_ID(0x0763, 0x2030):
1658 		num_outs = 6;
1659 		num_ins = 4;
1660 		break;
1661 	case USB_ID(0x0763, 0x2031):
1662 		num_outs = 8;
1663 		num_ins = 6;
1664 		break;
1665 	}
1666 
1667 	for (chan = 0; chan < num_outs + num_ins; chan++) {
1668 		if (chan < num_outs) {
1669 			snprintf(name, sizeof(name),
1670 				 "Effect Send DOut%d",
1671 				 chan + 1);
1672 		} else {
1673 			snprintf(name, sizeof(name),
1674 				 "Effect Send AIn%d",
1675 				 chan - num_outs + 1);
1676 		}
1677 
1678 		cmask = (chan == 0) ? 0 : BIT(chan - 1);
1679 		err = snd_create_std_mono_ctl(mixer, id, control,
1680 					      cmask, val_type, name,
1681 					      &snd_usb_mixer_vol_tlv);
1682 		if (err < 0)
1683 			return err;
1684 	}
1685 
1686 	return 0;
1687 }
1688 
1689 static int snd_c400_create_effect_ret_vol_ctls(struct usb_mixer_interface *mixer)
1690 {
1691 	char name[64];
1692 	unsigned int cmask;
1693 	int chan, err;
1694 	int num_outs = 0;
1695 	int offset = 0;
1696 
1697 	const unsigned int id = 0x40;
1698 	const int val_type = USB_MIXER_S16;
1699 	const int control = 1;
1700 
1701 	switch (mixer->chip->usb_id) {
1702 	case USB_ID(0x0763, 0x2030):
1703 		num_outs = 6;
1704 		offset = 0x3c;
1705 		/* { 0x3c, 0x43, 0x3e, 0x45, 0x40, 0x47 } */
1706 		break;
1707 	case USB_ID(0x0763, 0x2031):
1708 		num_outs = 8;
1709 		offset = 0x70;
1710 		/* { 0x70, 0x79, 0x72, 0x7b, 0x74, 0x7d, 0x76, 0x7f } */
1711 		break;
1712 	}
1713 
1714 	for (chan = 0; chan < num_outs; chan++) {
1715 		snprintf(name, sizeof(name),
1716 			 "Effect Return %d",
1717 			 chan + 1);
1718 
1719 		cmask = (chan == 0) ? 0 :
1720 			BIT(chan + (chan % 2) * num_outs - 1);
1721 		err = snd_create_std_mono_ctl_offset(mixer, id, control,
1722 						     cmask, val_type, offset, name,
1723 						     &snd_usb_mixer_vol_tlv);
1724 		if (err < 0)
1725 			return err;
1726 	}
1727 
1728 	return 0;
1729 }
1730 
1731 static int snd_c400_create_mixer(struct usb_mixer_interface *mixer)
1732 {
1733 	int err;
1734 
1735 	err = snd_c400_create_vol_ctls(mixer);
1736 	if (err < 0)
1737 		return err;
1738 
1739 	err = snd_c400_create_effect_vol_ctls(mixer);
1740 	if (err < 0)
1741 		return err;
1742 
1743 	err = snd_c400_create_effect_ret_vol_ctls(mixer);
1744 	if (err < 0)
1745 		return err;
1746 
1747 	err = snd_ftu_create_effect_switch(mixer, 2, 0x43);
1748 	if (err < 0)
1749 		return err;
1750 
1751 	err = snd_c400_create_effect_volume_ctl(mixer);
1752 	if (err < 0)
1753 		return err;
1754 
1755 	err = snd_c400_create_effect_duration_ctl(mixer);
1756 	if (err < 0)
1757 		return err;
1758 
1759 	err = snd_c400_create_effect_feedback_ctl(mixer);
1760 	if (err < 0)
1761 		return err;
1762 
1763 	return 0;
1764 }
1765 
1766 /*
1767  * The mixer units for Ebox-44 are corrupt, and even where they
1768  * are valid they presents mono controls as L and R channels of
1769  * stereo. So we provide a good mixer here.
1770  */
1771 static const struct std_mono_table ebox44_table[] = {
1772 	{
1773 		.unitid = 4,
1774 		.control = 1,
1775 		.cmask = 0x0,
1776 		.val_type = USB_MIXER_INV_BOOLEAN,
1777 		.name = "Headphone Playback Switch"
1778 	},
1779 	{
1780 		.unitid = 4,
1781 		.control = 2,
1782 		.cmask = 0x1,
1783 		.val_type = USB_MIXER_S16,
1784 		.name = "Headphone A Mix Playback Volume"
1785 	},
1786 	{
1787 		.unitid = 4,
1788 		.control = 2,
1789 		.cmask = 0x2,
1790 		.val_type = USB_MIXER_S16,
1791 		.name = "Headphone B Mix Playback Volume"
1792 	},
1793 
1794 	{
1795 		.unitid = 7,
1796 		.control = 1,
1797 		.cmask = 0x0,
1798 		.val_type = USB_MIXER_INV_BOOLEAN,
1799 		.name = "Output Playback Switch"
1800 	},
1801 	{
1802 		.unitid = 7,
1803 		.control = 2,
1804 		.cmask = 0x1,
1805 		.val_type = USB_MIXER_S16,
1806 		.name = "Output A Playback Volume"
1807 	},
1808 	{
1809 		.unitid = 7,
1810 		.control = 2,
1811 		.cmask = 0x2,
1812 		.val_type = USB_MIXER_S16,
1813 		.name = "Output B Playback Volume"
1814 	},
1815 
1816 	{
1817 		.unitid = 10,
1818 		.control = 1,
1819 		.cmask = 0x0,
1820 		.val_type = USB_MIXER_INV_BOOLEAN,
1821 		.name = "Input Capture Switch"
1822 	},
1823 	{
1824 		.unitid = 10,
1825 		.control = 2,
1826 		.cmask = 0x1,
1827 		.val_type = USB_MIXER_S16,
1828 		.name = "Input A Capture Volume"
1829 	},
1830 	{
1831 		.unitid = 10,
1832 		.control = 2,
1833 		.cmask = 0x2,
1834 		.val_type = USB_MIXER_S16,
1835 		.name = "Input B Capture Volume"
1836 	},
1837 
1838 	{}
1839 };
1840 
1841 /* Audio Advantage Micro II findings:
1842  *
1843  * Mapping spdif AES bits to vendor register.bit:
1844  * AES0: [0 0 0 0 2.3 2.2 2.1 2.0] - default 0x00
1845  * AES1: [3.3 3.2.3.1.3.0 2.7 2.6 2.5 2.4] - default: 0x01
1846  * AES2: [0 0 0 0 0 0 0 0]
1847  * AES3: [0 0 0 0 0 0 x 0] - 'x' bit is set basing on standard usb request
1848  *                           (UAC_EP_CS_ATTR_SAMPLE_RATE) for Audio Devices
1849  *
1850  * power on values:
1851  * r2: 0x10
1852  * r3: 0x20 (b7 is zeroed just before playback (except IEC61937) and set
1853  *           just after it to 0xa0, presumably it disables/mutes some analog
1854  *           parts when there is no audio.)
1855  * r9: 0x28
1856  *
1857  * Optical transmitter on/off:
1858  * vendor register.bit: 9.1
1859  * 0 - on (0x28 register value)
1860  * 1 - off (0x2a register value)
1861  *
1862  */
1863 static int snd_microii_spdif_info(struct snd_kcontrol *kcontrol,
1864 				  struct snd_ctl_elem_info *uinfo)
1865 {
1866 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1867 	uinfo->count = 1;
1868 	return 0;
1869 }
1870 
1871 static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
1872 					 struct snd_ctl_elem_value *ucontrol)
1873 {
1874 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1875 	struct snd_usb_audio *chip = list->mixer->chip;
1876 	int err;
1877 	struct usb_interface *iface;
1878 	struct usb_host_interface *alts;
1879 	unsigned int ep;
1880 	unsigned char data[3];
1881 	int rate;
1882 
1883 	CLASS(snd_usb_lock, pm)(chip);
1884 	if (pm.err < 0)
1885 		return pm.err;
1886 
1887 	ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff;
1888 	ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff;
1889 	ucontrol->value.iec958.status[2] = 0x00;
1890 
1891 	/* use known values for that card: interface#1 altsetting#1 */
1892 	iface = usb_ifnum_to_if(chip->dev, 1);
1893 	if (!iface || iface->num_altsetting < 2)
1894 		return -EINVAL;
1895 	alts = &iface->altsetting[1];
1896 	if (get_iface_desc(alts)->bNumEndpoints < 1)
1897 		return -EINVAL;
1898 	ep = get_endpoint(alts, 0)->bEndpointAddress;
1899 
1900 	err = snd_usb_ctl_msg(chip->dev,
1901 			      usb_rcvctrlpipe(chip->dev, 0),
1902 			      UAC_GET_CUR,
1903 			      USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN,
1904 			      UAC_EP_CS_ATTR_SAMPLE_RATE << 8,
1905 			      ep,
1906 			      data,
1907 			      sizeof(data));
1908 	if (err < 0)
1909 		return err;
1910 
1911 	rate = data[0] | (data[1] << 8) | (data[2] << 16);
1912 	ucontrol->value.iec958.status[3] = (rate == 48000) ?
1913 			IEC958_AES3_CON_FS_48000 : IEC958_AES3_CON_FS_44100;
1914 
1915 	return 0;
1916 }
1917 
1918 static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list)
1919 {
1920 	struct snd_usb_audio *chip = list->mixer->chip;
1921 	unsigned int pval = list->kctl->private_value;
1922 	u8 reg;
1923 	int err;
1924 
1925 	CLASS(snd_usb_lock, pm)(chip);
1926 	if (pm.err < 0)
1927 		return pm.err;
1928 
1929 	reg = ((pval >> 4) & 0xf0) | (pval & 0x0f);
1930 	err = snd_usb_ctl_msg(chip->dev,
1931 			      usb_sndctrlpipe(chip->dev, 0),
1932 			      UAC_SET_CUR,
1933 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1934 			      reg,
1935 			      2,
1936 			      NULL,
1937 			      0);
1938 	if (err < 0)
1939 		return err;
1940 
1941 	reg = (pval & IEC958_AES0_NONAUDIO) ? 0xa0 : 0x20;
1942 	reg |= (pval >> 12) & 0x0f;
1943 	err = snd_usb_ctl_msg(chip->dev,
1944 			      usb_sndctrlpipe(chip->dev, 0),
1945 			      UAC_SET_CUR,
1946 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1947 			      reg,
1948 			      3,
1949 			      NULL,
1950 			      0);
1951 	return err;
1952 }
1953 
1954 static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
1955 					 struct snd_ctl_elem_value *ucontrol)
1956 {
1957 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1958 	unsigned int pval, pval_old;
1959 	int err;
1960 
1961 	pval = kcontrol->private_value;
1962 	pval_old = pval;
1963 	pval &= 0xfffff0f0;
1964 	pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
1965 	pval |= (ucontrol->value.iec958.status[0] & 0x0f);
1966 
1967 	pval &= 0xffff0fff;
1968 	pval |= (ucontrol->value.iec958.status[1] & 0xf0) << 8;
1969 
1970 	/* The frequency bits in AES3 cannot be set via register access. */
1971 
1972 	/* Silently ignore any bits from the request that cannot be set. */
1973 
1974 	if (pval == pval_old)
1975 		return 0;
1976 
1977 	kcontrol->private_value = pval;
1978 	err = snd_microii_spdif_default_update(list);
1979 	return err < 0 ? err : 1;
1980 }
1981 
1982 static int snd_microii_spdif_mask_get(struct snd_kcontrol *kcontrol,
1983 				      struct snd_ctl_elem_value *ucontrol)
1984 {
1985 	ucontrol->value.iec958.status[0] = 0x0f;
1986 	ucontrol->value.iec958.status[1] = 0xff;
1987 	ucontrol->value.iec958.status[2] = 0x00;
1988 	ucontrol->value.iec958.status[3] = 0x00;
1989 
1990 	return 0;
1991 }
1992 
1993 static int snd_microii_spdif_switch_get(struct snd_kcontrol *kcontrol,
1994 					struct snd_ctl_elem_value *ucontrol)
1995 {
1996 	ucontrol->value.integer.value[0] = !(kcontrol->private_value & 0x02);
1997 
1998 	return 0;
1999 }
2000 
2001 static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list)
2002 {
2003 	struct snd_usb_audio *chip = list->mixer->chip;
2004 	u8 reg = list->kctl->private_value;
2005 
2006 	CLASS(snd_usb_lock, pm)(chip);
2007 	if (pm.err < 0)
2008 		return pm.err;
2009 
2010 	return snd_usb_ctl_msg(chip->dev,
2011 			       usb_sndctrlpipe(chip->dev, 0),
2012 			       UAC_SET_CUR,
2013 			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
2014 			       reg,
2015 			       9,
2016 			       NULL,
2017 			       0);
2018 }
2019 
2020 static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol,
2021 					struct snd_ctl_elem_value *ucontrol)
2022 {
2023 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2024 	u8 reg;
2025 	int err;
2026 
2027 	reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a;
2028 	if (reg != list->kctl->private_value)
2029 		return 0;
2030 
2031 	kcontrol->private_value = reg;
2032 	err = snd_microii_spdif_switch_update(list);
2033 	return err < 0 ? err : 1;
2034 }
2035 
2036 static const struct snd_kcontrol_new snd_microii_mixer_spdif[] = {
2037 	{
2038 		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
2039 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
2040 		.info =     snd_microii_spdif_info,
2041 		.get =      snd_microii_spdif_default_get,
2042 		.put =      snd_microii_spdif_default_put,
2043 		.private_value = 0x00000100UL,/* reset value */
2044 	},
2045 	{
2046 		.access =   SNDRV_CTL_ELEM_ACCESS_READ,
2047 		.iface =    SNDRV_CTL_ELEM_IFACE_PCM,
2048 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
2049 		.info =     snd_microii_spdif_info,
2050 		.get =      snd_microii_spdif_mask_get,
2051 	},
2052 	{
2053 		.iface =    SNDRV_CTL_ELEM_IFACE_MIXER,
2054 		.name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
2055 		.info =     snd_ctl_boolean_mono_info,
2056 		.get =      snd_microii_spdif_switch_get,
2057 		.put =      snd_microii_spdif_switch_put,
2058 		.private_value = 0x00000028UL,/* reset value */
2059 	}
2060 };
2061 
2062 static int snd_microii_controls_create(struct usb_mixer_interface *mixer)
2063 {
2064 	int err, i;
2065 	static const usb_mixer_elem_resume_func_t resume_funcs[] = {
2066 		snd_microii_spdif_default_update,
2067 		NULL,
2068 		snd_microii_spdif_switch_update
2069 	};
2070 
2071 	for (i = 0; i < ARRAY_SIZE(snd_microii_mixer_spdif); ++i) {
2072 		err = add_single_ctl_with_resume(mixer, 0,
2073 						 resume_funcs[i],
2074 						 &snd_microii_mixer_spdif[i],
2075 						 NULL);
2076 		if (err < 0)
2077 			return err;
2078 	}
2079 
2080 	return 0;
2081 }
2082 
2083 /* Creative Sound Blaster E1 */
2084 
2085 static int snd_soundblaster_e1_switch_get(struct snd_kcontrol *kcontrol,
2086 					  struct snd_ctl_elem_value *ucontrol)
2087 {
2088 	ucontrol->value.integer.value[0] = kcontrol->private_value;
2089 	return 0;
2090 }
2091 
2092 static int snd_soundblaster_e1_switch_update(struct usb_mixer_interface *mixer,
2093 					     unsigned char state)
2094 {
2095 	struct snd_usb_audio *chip = mixer->chip;
2096 	unsigned char buff[2];
2097 
2098 	buff[0] = 0x02;
2099 	buff[1] = state ? 0x02 : 0x00;
2100 
2101 	CLASS(snd_usb_lock, pm)(chip);
2102 	if (pm.err < 0)
2103 		return pm.err;
2104 	return snd_usb_ctl_msg(chip->dev,
2105 			       usb_sndctrlpipe(chip->dev, 0), HID_REQ_SET_REPORT,
2106 			       USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
2107 			       0x0202, 3, buff, 2);
2108 }
2109 
2110 static int snd_soundblaster_e1_switch_put(struct snd_kcontrol *kcontrol,
2111 					  struct snd_ctl_elem_value *ucontrol)
2112 {
2113 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2114 	unsigned char value = !!ucontrol->value.integer.value[0];
2115 	int err;
2116 
2117 	if (kcontrol->private_value == value)
2118 		return 0;
2119 	kcontrol->private_value = value;
2120 	err = snd_soundblaster_e1_switch_update(list->mixer, value);
2121 	return err < 0 ? err : 1;
2122 }
2123 
2124 static int snd_soundblaster_e1_switch_resume(struct usb_mixer_elem_list *list)
2125 {
2126 	return snd_soundblaster_e1_switch_update(list->mixer,
2127 						 list->kctl->private_value);
2128 }
2129 
2130 static int snd_soundblaster_e1_switch_info(struct snd_kcontrol *kcontrol,
2131 					   struct snd_ctl_elem_info *uinfo)
2132 {
2133 	static const char *const texts[2] = {
2134 		"Mic", "Aux"
2135 	};
2136 
2137 	return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
2138 }
2139 
2140 static const struct snd_kcontrol_new snd_soundblaster_e1_input_switch = {
2141 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2142 	.name = "Input Source",
2143 	.info = snd_soundblaster_e1_switch_info,
2144 	.get = snd_soundblaster_e1_switch_get,
2145 	.put = snd_soundblaster_e1_switch_put,
2146 	.private_value = 0,
2147 };
2148 
2149 static int snd_soundblaster_e1_switch_create(struct usb_mixer_interface *mixer)
2150 {
2151 	return add_single_ctl_with_resume(mixer, 0,
2152 					  snd_soundblaster_e1_switch_resume,
2153 					  &snd_soundblaster_e1_input_switch,
2154 					  NULL);
2155 }
2156 
2157 /*
2158  * Dell WD15 dock jack detection
2159  *
2160  * The WD15 contains an ALC4020 USB audio controller and ALC3263 audio codec
2161  * from Realtek. It is a UAC 1 device, and UAC 1 does not support jack
2162  * detection. Instead, jack detection works by sending HD Audio commands over
2163  * vendor-type USB messages.
2164  */
2165 
2166 #define HDA_VERB_CMD(V, N, D) (((N) << 20) | ((V) << 8) | (D))
2167 
2168 #define REALTEK_HDA_VALUE 0x0038
2169 
2170 #define REALTEK_HDA_SET		62
2171 #define REALTEK_MANUAL_MODE	72
2172 #define REALTEK_HDA_GET_OUT	88
2173 #define REALTEK_HDA_GET_IN	89
2174 
2175 #define REALTEK_AUDIO_FUNCTION_GROUP	0x01
2176 #define REALTEK_LINE1			0x1a
2177 #define REALTEK_VENDOR_REGISTERS	0x20
2178 #define REALTEK_HP_OUT			0x21
2179 
2180 #define REALTEK_CBJ_CTRL2 0x50
2181 
2182 #define REALTEK_JACK_INTERRUPT_NODE 5
2183 
2184 #define REALTEK_MIC_FLAG 0x100
2185 
2186 static int realtek_hda_set(struct snd_usb_audio *chip, u32 cmd)
2187 {
2188 	struct usb_device *dev = chip->dev;
2189 	__be32 buf = cpu_to_be32(cmd);
2190 
2191 	return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), REALTEK_HDA_SET,
2192 			       USB_RECIP_DEVICE | USB_TYPE_VENDOR | USB_DIR_OUT,
2193 			       REALTEK_HDA_VALUE, 0, &buf, sizeof(buf));
2194 }
2195 
2196 static int realtek_hda_get(struct snd_usb_audio *chip, u32 cmd, u32 *value)
2197 {
2198 	struct usb_device *dev = chip->dev;
2199 	int err;
2200 	__be32 buf = cpu_to_be32(cmd);
2201 
2202 	err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), REALTEK_HDA_GET_OUT,
2203 			      USB_RECIP_DEVICE | USB_TYPE_VENDOR | USB_DIR_OUT,
2204 			      REALTEK_HDA_VALUE, 0, &buf, sizeof(buf));
2205 	if (err < 0)
2206 		return err;
2207 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), REALTEK_HDA_GET_IN,
2208 			      USB_RECIP_DEVICE | USB_TYPE_VENDOR | USB_DIR_IN,
2209 			      REALTEK_HDA_VALUE, 0, &buf, sizeof(buf));
2210 	if (err < 0)
2211 		return err;
2212 
2213 	*value = be32_to_cpu(buf);
2214 	return 0;
2215 }
2216 
2217 static int realtek_ctl_connector_get(struct snd_kcontrol *kcontrol,
2218 				     struct snd_ctl_elem_value *ucontrol)
2219 {
2220 	struct usb_mixer_elem_info *cval = snd_kcontrol_chip(kcontrol);
2221 	struct snd_usb_audio *chip = cval->head.mixer->chip;
2222 	u32 pv = kcontrol->private_value;
2223 	u32 node_id = pv & 0xff;
2224 	u32 sense;
2225 	u32 cbj_ctrl2;
2226 	bool presence;
2227 	int err;
2228 
2229 	CLASS(snd_usb_lock, pm)(chip);
2230 	if (pm.err < 0)
2231 		return pm.err;
2232 	err = realtek_hda_get(chip,
2233 			      HDA_VERB_CMD(AC_VERB_GET_PIN_SENSE, node_id, 0),
2234 			      &sense);
2235 	if (err < 0)
2236 		return err;
2237 	if (pv & REALTEK_MIC_FLAG) {
2238 		err = realtek_hda_set(chip,
2239 				      HDA_VERB_CMD(AC_VERB_SET_COEF_INDEX,
2240 						   REALTEK_VENDOR_REGISTERS,
2241 						   REALTEK_CBJ_CTRL2));
2242 		if (err < 0)
2243 			return err;
2244 		err = realtek_hda_get(chip,
2245 				      HDA_VERB_CMD(AC_VERB_GET_PROC_COEF,
2246 						   REALTEK_VENDOR_REGISTERS, 0),
2247 				      &cbj_ctrl2);
2248 		if (err < 0)
2249 			return err;
2250 	}
2251 
2252 	presence = sense & AC_PINSENSE_PRESENCE;
2253 	if (pv & REALTEK_MIC_FLAG)
2254 		presence = presence && (cbj_ctrl2 & 0x0070) == 0x0070;
2255 	ucontrol->value.integer.value[0] = presence;
2256 	return 0;
2257 }
2258 
2259 static const struct snd_kcontrol_new realtek_connector_ctl_ro = {
2260 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
2261 	.name = "", /* will be filled later manually */
2262 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
2263 	.info = snd_ctl_boolean_mono_info,
2264 	.get = realtek_ctl_connector_get,
2265 };
2266 
2267 static int realtek_resume_jack(struct usb_mixer_elem_list *list)
2268 {
2269 	snd_ctl_notify(list->mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
2270 		       &list->kctl->id);
2271 	return 0;
2272 }
2273 
2274 static int realtek_add_jack(struct usb_mixer_interface *mixer,
2275 			    char *name, u32 val, int unitid,
2276 			    const struct snd_kcontrol_new *kctl_new)
2277 {
2278 	struct usb_mixer_elem_info *cval;
2279 	struct snd_kcontrol *kctl;
2280 
2281 	cval = kzalloc(sizeof(*cval), GFP_KERNEL);
2282 	if (!cval)
2283 		return -ENOMEM;
2284 	snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid);
2285 	cval->head.resume = realtek_resume_jack;
2286 	cval->val_type = USB_MIXER_BOOLEAN;
2287 	cval->channels = 1;
2288 	cval->min = 0;
2289 	cval->max = 1;
2290 	kctl = snd_ctl_new1(kctl_new, cval);
2291 	if (!kctl) {
2292 		kfree(cval);
2293 		return -ENOMEM;
2294 	}
2295 	kctl->private_value = val;
2296 	strscpy(kctl->id.name, name, sizeof(kctl->id.name));
2297 	kctl->private_free = snd_usb_mixer_elem_free;
2298 	return snd_usb_mixer_add_control(&cval->head, kctl);
2299 }
2300 
2301 static int dell_dock_mixer_create(struct usb_mixer_interface *mixer)
2302 {
2303 	int err;
2304 	struct usb_device *dev = mixer->chip->dev;
2305 
2306 	/* Power down the audio codec to avoid loud pops in the next step. */
2307 	realtek_hda_set(mixer->chip,
2308 			HDA_VERB_CMD(AC_VERB_SET_POWER_STATE,
2309 				     REALTEK_AUDIO_FUNCTION_GROUP,
2310 				     AC_PWRST_D3));
2311 
2312 	/*
2313 	 * Turn off 'manual mode' in case it was enabled. This removes the need
2314 	 * to power cycle the dock after it was attached to a Windows machine.
2315 	 */
2316 	snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), REALTEK_MANUAL_MODE,
2317 			USB_RECIP_DEVICE | USB_TYPE_VENDOR | USB_DIR_OUT,
2318 			0, 0, NULL, 0);
2319 
2320 	err = realtek_add_jack(mixer, "Line Out Jack", REALTEK_LINE1,
2321 			       REALTEK_JACK_INTERRUPT_NODE,
2322 			       &realtek_connector_ctl_ro);
2323 	if (err < 0)
2324 		return err;
2325 	err = realtek_add_jack(mixer, "Headphone Jack", REALTEK_HP_OUT,
2326 			       REALTEK_JACK_INTERRUPT_NODE,
2327 			       &realtek_connector_ctl_ro);
2328 	if (err < 0)
2329 		return err;
2330 	err = realtek_add_jack(mixer, "Headset Mic Jack",
2331 			       REALTEK_HP_OUT | REALTEK_MIC_FLAG,
2332 			       REALTEK_JACK_INTERRUPT_NODE,
2333 			       &realtek_connector_ctl_ro);
2334 	if (err < 0)
2335 		return err;
2336 	return 0;
2337 }
2338 
2339 static void dell_dock_init_vol(struct usb_mixer_interface *mixer, int ch, int id)
2340 {
2341 	struct snd_usb_audio *chip = mixer->chip;
2342 	u16 buf = 0;
2343 
2344 	snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
2345 			USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
2346 			(UAC_FU_VOLUME << 8) | ch,
2347 			snd_usb_ctrl_intf(mixer->hostif) | (id << 8),
2348 			&buf, 2);
2349 }
2350 
2351 static int dell_dock_mixer_init(struct usb_mixer_interface *mixer)
2352 {
2353 	/* fix to 0dB playback volumes */
2354 	dell_dock_init_vol(mixer, 1, 16);
2355 	dell_dock_init_vol(mixer, 2, 16);
2356 	dell_dock_init_vol(mixer, 1, 19);
2357 	dell_dock_init_vol(mixer, 2, 19);
2358 	return 0;
2359 }
2360 
2361 /*
2362  * HP Thunderbolt Dock G2 jack detection
2363  *
2364  * Similar to the Dell WD15/WD19, but with different commands.
2365  */
2366 
2367 #define HP_DOCK_JACK_INTERRUPT_NODE	7
2368 
2369 #define HP_DOCK_GET			37
2370 
2371 #define HP_DOCK_JACK_PRESENCE		0xffb8
2372 #define HP_DOCK_JACK_PRESENCE_BIT	BIT(2)
2373 
2374 #define HP_DOCK_MIC_SENSE		0xf753
2375 #define HP_DOCK_MIC_SENSE_COMPLETE_BIT	BIT(4)
2376 
2377 #define HP_DOCK_MIC_SENSE_MASK		(BIT(2) | BIT(1) | BIT(0))
2378 /* #define HP_DOCK_MIC_SENSE_PRESENT	0x2 */
2379 #define HP_DOCK_MIC_SENSE_NOT_PRESENT	0x4
2380 
2381 static int hp_dock_ctl_connector_get(struct snd_kcontrol *kcontrol,
2382 				     struct snd_ctl_elem_value *ucontrol)
2383 {
2384 	struct usb_mixer_elem_info *cval = snd_kcontrol_chip(kcontrol);
2385 	struct snd_usb_audio *chip = cval->head.mixer->chip;
2386 	u32 pv = kcontrol->private_value;
2387 	bool presence;
2388 	int err;
2389 	u8 buf;
2390 
2391 	CLASS(snd_usb_lock, pm)(chip);
2392 	if (pm.err < 0)
2393 		return pm.err;
2394 
2395 	err = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0),
2396 		       HP_DOCK_GET,
2397 		       USB_RECIP_DEVICE | USB_TYPE_VENDOR | USB_DIR_IN,
2398 		       0, HP_DOCK_JACK_PRESENCE, &buf, sizeof(buf));
2399 	if (err < 0)
2400 		return err;
2401 
2402 	presence = !(buf & HP_DOCK_JACK_PRESENCE_BIT);
2403 
2404 	if (pv && presence) {
2405 		for (int i = 0; i < 20; i++) {
2406 			err = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0),
2407 			       HP_DOCK_GET,
2408 			       USB_RECIP_DEVICE | USB_TYPE_VENDOR | USB_DIR_IN,
2409 			       0, HP_DOCK_MIC_SENSE, &buf, sizeof(buf));
2410 			if (err < 0)
2411 				return err;
2412 
2413 			/* Mic sense is complete, we have a result. */
2414 			if (buf & HP_DOCK_MIC_SENSE_COMPLETE_BIT)
2415 				break;
2416 
2417 			msleep(100);
2418 		}
2419 
2420 		/*
2421 		 * If we reach the retry limit without mic sense having
2422 		 * completed, buf will contain HP_DOCK_MIC_SENSE_PRESENT,
2423 		 * thus presence remains true even when detection fails.
2424 		 */
2425 		if ((buf & HP_DOCK_MIC_SENSE_MASK) == HP_DOCK_MIC_SENSE_NOT_PRESENT)
2426 			presence = false;
2427 	}
2428 	ucontrol->value.integer.value[0] = presence;
2429 	return 0;
2430 }
2431 
2432 static const struct snd_kcontrol_new hp_dock_connector_ctl_ro = {
2433 	.iface = SNDRV_CTL_ELEM_IFACE_CARD,
2434 	.name = "", /* will be filled later manually */
2435 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
2436 	.info = snd_ctl_boolean_mono_info,
2437 	.get = hp_dock_ctl_connector_get,
2438 };
2439 
2440 static int hp_dock_mixer_create(struct usb_mixer_interface *mixer)
2441 {
2442 	int err;
2443 
2444 	err = realtek_add_jack(mixer, "Headsets Playback Jack", 0,
2445 			       HP_DOCK_JACK_INTERRUPT_NODE,
2446 			       &hp_dock_connector_ctl_ro);
2447 	if (err < 0)
2448 		return err;
2449 
2450 	err = realtek_add_jack(mixer, "Headset Capture Jack", 1,
2451 			       HP_DOCK_JACK_INTERRUPT_NODE,
2452 			       &hp_dock_connector_ctl_ro);
2453 	if (err < 0)
2454 		return err;
2455 
2456 	return 0;
2457 }
2458 
2459 
2460 /* RME Class Compliant device quirks */
2461 
2462 #define SND_RME_GET_STATUS1			23
2463 #define SND_RME_GET_CURRENT_FREQ		17
2464 #define SND_RME_CLK_SYSTEM_SHIFT		16
2465 #define SND_RME_CLK_SYSTEM_MASK			0x1f
2466 #define SND_RME_CLK_AES_SHIFT			8
2467 #define SND_RME_CLK_SPDIF_SHIFT			12
2468 #define SND_RME_CLK_AES_SPDIF_MASK		0xf
2469 #define SND_RME_CLK_SYNC_SHIFT			6
2470 #define SND_RME_CLK_SYNC_MASK			0x3
2471 #define SND_RME_CLK_FREQMUL_SHIFT		18
2472 #define SND_RME_CLK_FREQMUL_MASK		0x7
2473 #define SND_RME_CLK_SYSTEM(x) \
2474 	(((x) >> SND_RME_CLK_SYSTEM_SHIFT) & SND_RME_CLK_SYSTEM_MASK)
2475 #define SND_RME_CLK_AES(x) \
2476 	(((x) >> SND_RME_CLK_AES_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
2477 #define SND_RME_CLK_SPDIF(x) \
2478 	(((x) >> SND_RME_CLK_SPDIF_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
2479 #define SND_RME_CLK_SYNC(x) \
2480 	(((x) >> SND_RME_CLK_SYNC_SHIFT) & SND_RME_CLK_SYNC_MASK)
2481 #define SND_RME_CLK_FREQMUL(x) \
2482 	(((x) >> SND_RME_CLK_FREQMUL_SHIFT) & SND_RME_CLK_FREQMUL_MASK)
2483 #define SND_RME_CLK_AES_LOCK			0x1
2484 #define SND_RME_CLK_AES_SYNC			0x4
2485 #define SND_RME_CLK_SPDIF_LOCK			0x2
2486 #define SND_RME_CLK_SPDIF_SYNC			0x8
2487 #define SND_RME_SPDIF_IF_SHIFT			4
2488 #define SND_RME_SPDIF_FORMAT_SHIFT		5
2489 #define SND_RME_BINARY_MASK			0x1
2490 #define SND_RME_SPDIF_IF(x) \
2491 	(((x) >> SND_RME_SPDIF_IF_SHIFT) & SND_RME_BINARY_MASK)
2492 #define SND_RME_SPDIF_FORMAT(x) \
2493 	(((x) >> SND_RME_SPDIF_FORMAT_SHIFT) & SND_RME_BINARY_MASK)
2494 
2495 static const u32 snd_rme_rate_table[] = {
2496 	32000, 44100, 48000, 50000,
2497 	64000, 88200, 96000, 100000,
2498 	128000, 176400, 192000, 200000,
2499 	256000,	352800, 384000, 400000,
2500 	512000, 705600, 768000, 800000
2501 };
2502 
2503 /* maximum number of items for AES and S/PDIF rates for above table */
2504 #define SND_RME_RATE_IDX_AES_SPDIF_NUM		12
2505 
2506 enum snd_rme_domain {
2507 	SND_RME_DOMAIN_SYSTEM,
2508 	SND_RME_DOMAIN_AES,
2509 	SND_RME_DOMAIN_SPDIF
2510 };
2511 
2512 enum snd_rme_clock_status {
2513 	SND_RME_CLOCK_NOLOCK,
2514 	SND_RME_CLOCK_LOCK,
2515 	SND_RME_CLOCK_SYNC
2516 };
2517 
2518 static int snd_rme_read_value(struct snd_usb_audio *chip,
2519 			      unsigned int item,
2520 			      u32 *value)
2521 {
2522 	struct usb_device *dev = chip->dev;
2523 	int err;
2524 
2525 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
2526 			      item,
2527 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2528 			      0, 0,
2529 			      value, sizeof(*value));
2530 	if (err < 0)
2531 		dev_err(&dev->dev,
2532 			"unable to issue vendor read request %d (ret = %d)",
2533 			item, err);
2534 	return err;
2535 }
2536 
2537 static int snd_rme_get_status1(struct snd_kcontrol *kcontrol,
2538 			       u32 *status1)
2539 {
2540 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2541 	struct snd_usb_audio *chip = list->mixer->chip;
2542 
2543 	*status1 = 0;
2544 	CLASS(snd_usb_lock, pm)(chip);
2545 	if (pm.err < 0)
2546 		return pm.err;
2547 	return snd_rme_read_value(chip, SND_RME_GET_STATUS1, status1);
2548 }
2549 
2550 static int snd_rme_rate_get(struct snd_kcontrol *kcontrol,
2551 			    struct snd_ctl_elem_value *ucontrol)
2552 {
2553 	u32 status1;
2554 	u32 rate = 0;
2555 	int idx;
2556 	int err;
2557 
2558 	err = snd_rme_get_status1(kcontrol, &status1);
2559 	if (err < 0)
2560 		return err;
2561 	switch (kcontrol->private_value) {
2562 	case SND_RME_DOMAIN_SYSTEM:
2563 		idx = SND_RME_CLK_SYSTEM(status1);
2564 		if (idx < ARRAY_SIZE(snd_rme_rate_table))
2565 			rate = snd_rme_rate_table[idx];
2566 		break;
2567 	case SND_RME_DOMAIN_AES:
2568 		idx = SND_RME_CLK_AES(status1);
2569 		if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
2570 			rate = snd_rme_rate_table[idx];
2571 		break;
2572 	case SND_RME_DOMAIN_SPDIF:
2573 		idx = SND_RME_CLK_SPDIF(status1);
2574 		if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
2575 			rate = snd_rme_rate_table[idx];
2576 		break;
2577 	default:
2578 		return -EINVAL;
2579 	}
2580 	ucontrol->value.integer.value[0] = rate;
2581 	return 0;
2582 }
2583 
2584 static int snd_rme_sync_state_get(struct snd_kcontrol *kcontrol,
2585 				  struct snd_ctl_elem_value *ucontrol)
2586 {
2587 	u32 status1;
2588 	int idx = SND_RME_CLOCK_NOLOCK;
2589 	int err;
2590 
2591 	err = snd_rme_get_status1(kcontrol, &status1);
2592 	if (err < 0)
2593 		return err;
2594 	switch (kcontrol->private_value) {
2595 	case SND_RME_DOMAIN_AES:  /* AES */
2596 		if (status1 & SND_RME_CLK_AES_SYNC)
2597 			idx = SND_RME_CLOCK_SYNC;
2598 		else if (status1 & SND_RME_CLK_AES_LOCK)
2599 			idx = SND_RME_CLOCK_LOCK;
2600 		break;
2601 	case SND_RME_DOMAIN_SPDIF:  /* SPDIF */
2602 		if (status1 & SND_RME_CLK_SPDIF_SYNC)
2603 			idx = SND_RME_CLOCK_SYNC;
2604 		else if (status1 & SND_RME_CLK_SPDIF_LOCK)
2605 			idx = SND_RME_CLOCK_LOCK;
2606 		break;
2607 	default:
2608 		return -EINVAL;
2609 	}
2610 	ucontrol->value.enumerated.item[0] = idx;
2611 	return 0;
2612 }
2613 
2614 static int snd_rme_spdif_if_get(struct snd_kcontrol *kcontrol,
2615 				struct snd_ctl_elem_value *ucontrol)
2616 {
2617 	u32 status1;
2618 	int err;
2619 
2620 	err = snd_rme_get_status1(kcontrol, &status1);
2621 	if (err < 0)
2622 		return err;
2623 	ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_IF(status1);
2624 	return 0;
2625 }
2626 
2627 static int snd_rme_spdif_format_get(struct snd_kcontrol *kcontrol,
2628 				    struct snd_ctl_elem_value *ucontrol)
2629 {
2630 	u32 status1;
2631 	int err;
2632 
2633 	err = snd_rme_get_status1(kcontrol, &status1);
2634 	if (err < 0)
2635 		return err;
2636 	ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_FORMAT(status1);
2637 	return 0;
2638 }
2639 
2640 static int snd_rme_sync_source_get(struct snd_kcontrol *kcontrol,
2641 				   struct snd_ctl_elem_value *ucontrol)
2642 {
2643 	u32 status1;
2644 	int err;
2645 
2646 	err = snd_rme_get_status1(kcontrol, &status1);
2647 	if (err < 0)
2648 		return err;
2649 	ucontrol->value.enumerated.item[0] = SND_RME_CLK_SYNC(status1);
2650 	return 0;
2651 }
2652 
2653 static int snd_rme_current_freq_get(struct snd_kcontrol *kcontrol,
2654 				    struct snd_ctl_elem_value *ucontrol)
2655 {
2656 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2657 	struct snd_usb_audio *chip = list->mixer->chip;
2658 	u32 status1;
2659 	const u64 num = 104857600000000ULL;
2660 	u32 den;
2661 	unsigned int freq;
2662 	int err;
2663 
2664 	CLASS(snd_usb_lock, pm)(chip);
2665 	if (pm.err < 0)
2666 		return pm.err;
2667 	err = snd_rme_read_value(chip, SND_RME_GET_STATUS1, &status1);
2668 	if (err < 0)
2669 		return err;
2670 	err = snd_rme_read_value(chip, SND_RME_GET_CURRENT_FREQ, &den);
2671 	if (err < 0)
2672 		return err;
2673 	freq = (den == 0) ? 0 : div64_u64(num, den);
2674 	freq <<= SND_RME_CLK_FREQMUL(status1);
2675 	ucontrol->value.integer.value[0] = freq;
2676 	return 0;
2677 }
2678 
2679 static int snd_rme_rate_info(struct snd_kcontrol *kcontrol,
2680 			     struct snd_ctl_elem_info *uinfo)
2681 {
2682 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2683 	uinfo->count = 1;
2684 	switch (kcontrol->private_value) {
2685 	case SND_RME_DOMAIN_SYSTEM:
2686 		uinfo->value.integer.min = 32000;
2687 		uinfo->value.integer.max = 800000;
2688 		break;
2689 	case SND_RME_DOMAIN_AES:
2690 	case SND_RME_DOMAIN_SPDIF:
2691 	default:
2692 		uinfo->value.integer.min = 0;
2693 		uinfo->value.integer.max = 200000;
2694 	}
2695 	uinfo->value.integer.step = 0;
2696 	return 0;
2697 }
2698 
2699 static int snd_rme_sync_state_info(struct snd_kcontrol *kcontrol,
2700 				   struct snd_ctl_elem_info *uinfo)
2701 {
2702 	static const char *const sync_states[] = {
2703 		"No Lock", "Lock", "Sync"
2704 	};
2705 
2706 	return snd_ctl_enum_info(uinfo, 1,
2707 				 ARRAY_SIZE(sync_states), sync_states);
2708 }
2709 
2710 static int snd_rme_spdif_if_info(struct snd_kcontrol *kcontrol,
2711 				 struct snd_ctl_elem_info *uinfo)
2712 {
2713 	static const char *const spdif_if[] = {
2714 		"Coaxial", "Optical"
2715 	};
2716 
2717 	return snd_ctl_enum_info(uinfo, 1,
2718 				 ARRAY_SIZE(spdif_if), spdif_if);
2719 }
2720 
2721 static int snd_rme_spdif_format_info(struct snd_kcontrol *kcontrol,
2722 				     struct snd_ctl_elem_info *uinfo)
2723 {
2724 	static const char *const optical_type[] = {
2725 		"Consumer", "Professional"
2726 	};
2727 
2728 	return snd_ctl_enum_info(uinfo, 1,
2729 				 ARRAY_SIZE(optical_type), optical_type);
2730 }
2731 
2732 static int snd_rme_sync_source_info(struct snd_kcontrol *kcontrol,
2733 				    struct snd_ctl_elem_info *uinfo)
2734 {
2735 	static const char *const sync_sources[] = {
2736 		"Internal", "AES", "SPDIF", "Internal"
2737 	};
2738 
2739 	return snd_ctl_enum_info(uinfo, 1,
2740 				 ARRAY_SIZE(sync_sources), sync_sources);
2741 }
2742 
2743 static const struct snd_kcontrol_new snd_rme_controls[] = {
2744 	{
2745 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2746 		.name = "AES Rate",
2747 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2748 		.info = snd_rme_rate_info,
2749 		.get = snd_rme_rate_get,
2750 		.private_value = SND_RME_DOMAIN_AES
2751 	},
2752 	{
2753 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2754 		.name = "AES Sync",
2755 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2756 		.info = snd_rme_sync_state_info,
2757 		.get = snd_rme_sync_state_get,
2758 		.private_value = SND_RME_DOMAIN_AES
2759 	},
2760 	{
2761 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2762 		.name = "SPDIF Rate",
2763 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2764 		.info = snd_rme_rate_info,
2765 		.get = snd_rme_rate_get,
2766 		.private_value = SND_RME_DOMAIN_SPDIF
2767 	},
2768 	{
2769 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2770 		.name = "SPDIF Sync",
2771 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2772 		.info = snd_rme_sync_state_info,
2773 		.get = snd_rme_sync_state_get,
2774 		.private_value = SND_RME_DOMAIN_SPDIF
2775 	},
2776 	{
2777 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2778 		.name = "SPDIF Interface",
2779 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2780 		.info = snd_rme_spdif_if_info,
2781 		.get = snd_rme_spdif_if_get,
2782 	},
2783 	{
2784 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2785 		.name = "SPDIF Format",
2786 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2787 		.info = snd_rme_spdif_format_info,
2788 		.get = snd_rme_spdif_format_get,
2789 	},
2790 	{
2791 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2792 		.name = "Sync Source",
2793 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2794 		.info = snd_rme_sync_source_info,
2795 		.get = snd_rme_sync_source_get
2796 	},
2797 	{
2798 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2799 		.name = "System Rate",
2800 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2801 		.info = snd_rme_rate_info,
2802 		.get = snd_rme_rate_get,
2803 		.private_value = SND_RME_DOMAIN_SYSTEM
2804 	},
2805 	{
2806 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2807 		.name = "Current Frequency",
2808 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2809 		.info = snd_rme_rate_info,
2810 		.get = snd_rme_current_freq_get
2811 	}
2812 };
2813 
2814 static int snd_rme_controls_create(struct usb_mixer_interface *mixer)
2815 {
2816 	int err, i;
2817 
2818 	for (i = 0; i < ARRAY_SIZE(snd_rme_controls); ++i) {
2819 		err = add_single_ctl_with_resume(mixer, 0,
2820 						 NULL,
2821 						 &snd_rme_controls[i],
2822 						 NULL);
2823 		if (err < 0)
2824 			return err;
2825 	}
2826 
2827 	return 0;
2828 }
2829 
2830 /*
2831  * RME Babyface Pro (FS)
2832  *
2833  * These devices exposes a couple of DSP functions via request to EP0.
2834  * Switches are available via control registers, while routing is controlled
2835  * by controlling the volume on each possible crossing point.
2836  * Volume control is linear, from -inf (dec. 0) to +6dB (dec. 65536) with
2837  * 0dB being at dec. 32768.
2838  */
2839 enum {
2840 	SND_BBFPRO_CTL_REG1 = 0,
2841 	SND_BBFPRO_CTL_REG2
2842 };
2843 
2844 #define SND_BBFPRO_CTL_REG_MASK 1
2845 #define SND_BBFPRO_CTL_IDX_MASK 0xff
2846 #define SND_BBFPRO_CTL_IDX_SHIFT 1
2847 #define SND_BBFPRO_CTL_VAL_MASK 1
2848 #define SND_BBFPRO_CTL_VAL_SHIFT 9
2849 #define SND_BBFPRO_CTL_REG1_CLK_MASTER 0
2850 #define SND_BBFPRO_CTL_REG1_CLK_OPTICAL 1
2851 #define SND_BBFPRO_CTL_REG1_SPDIF_PRO 7
2852 #define SND_BBFPRO_CTL_REG1_SPDIF_EMPH 8
2853 #define SND_BBFPRO_CTL_REG1_SPDIF_OPTICAL 10
2854 #define SND_BBFPRO_CTL_REG2_48V_AN1 0
2855 #define SND_BBFPRO_CTL_REG2_48V_AN2 1
2856 #define SND_BBFPRO_CTL_REG2_SENS_IN3 2
2857 #define SND_BBFPRO_CTL_REG2_SENS_IN4 3
2858 #define SND_BBFPRO_CTL_REG2_PAD_AN1 4
2859 #define SND_BBFPRO_CTL_REG2_PAD_AN2 5
2860 
2861 #define SND_BBFPRO_MIXER_MAIN_OUT_CH_OFFSET 992
2862 #define SND_BBFPRO_MIXER_IDX_MASK 0x3ff
2863 #define SND_BBFPRO_MIXER_VAL_MASK 0x3ffff
2864 #define SND_BBFPRO_MIXER_VAL_SHIFT 9
2865 #define SND_BBFPRO_MIXER_VAL_MIN 0 // -inf
2866 #define SND_BBFPRO_MIXER_VAL_MAX 65536 // +6dB
2867 
2868 #define SND_BBFPRO_GAIN_CHANNEL_MASK 0x03
2869 #define SND_BBFPRO_GAIN_CHANNEL_SHIFT 7
2870 #define SND_BBFPRO_GAIN_VAL_MASK 0x7f
2871 #define SND_BBFPRO_GAIN_VAL_MIN 0
2872 #define SND_BBFPRO_GAIN_VAL_MIC_MAX 65
2873 #define SND_BBFPRO_GAIN_VAL_LINE_MAX 18 // 9db in 0.5db incraments
2874 
2875 #define SND_BBFPRO_USBREQ_CTL_REG1 0x10
2876 #define SND_BBFPRO_USBREQ_CTL_REG2 0x17
2877 #define SND_BBFPRO_USBREQ_GAIN 0x1a
2878 #define SND_BBFPRO_USBREQ_MIXER 0x12
2879 
2880 static int snd_bbfpro_ctl_update(struct usb_mixer_interface *mixer, u8 reg,
2881 				 u8 index, u8 value)
2882 {
2883 	u16 usb_req, usb_idx, usb_val;
2884 	struct snd_usb_audio *chip = mixer->chip;
2885 
2886 	CLASS(snd_usb_lock, pm)(chip);
2887 	if (pm.err < 0)
2888 		return pm.err;
2889 
2890 	if (reg == SND_BBFPRO_CTL_REG1) {
2891 		usb_req = SND_BBFPRO_USBREQ_CTL_REG1;
2892 		if (index == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) {
2893 			usb_idx = 3;
2894 			usb_val = value ? 3 : 0;
2895 		} else {
2896 			usb_idx = BIT(index);
2897 			usb_val = value ? usb_idx : 0;
2898 		}
2899 	} else {
2900 		usb_req = SND_BBFPRO_USBREQ_CTL_REG2;
2901 		usb_idx = BIT(index);
2902 		usb_val = value ? usb_idx : 0;
2903 	}
2904 
2905 	return snd_usb_ctl_msg(chip->dev,
2906 			       usb_sndctrlpipe(chip->dev, 0), usb_req,
2907 			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2908 			       usb_val, usb_idx, NULL, 0);
2909 }
2910 
2911 static int snd_bbfpro_ctl_get(struct snd_kcontrol *kcontrol,
2912 			      struct snd_ctl_elem_value *ucontrol)
2913 {
2914 	u8 reg, idx, val;
2915 	int pv;
2916 
2917 	pv = kcontrol->private_value;
2918 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
2919 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
2920 	val = kcontrol->private_value >> SND_BBFPRO_CTL_VAL_SHIFT;
2921 
2922 	if ((reg == SND_BBFPRO_CTL_REG1 &&
2923 	     idx == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) ||
2924 	    (reg == SND_BBFPRO_CTL_REG2 &&
2925 	    (idx == SND_BBFPRO_CTL_REG2_SENS_IN3 ||
2926 	     idx == SND_BBFPRO_CTL_REG2_SENS_IN4))) {
2927 		ucontrol->value.enumerated.item[0] = val;
2928 	} else {
2929 		ucontrol->value.integer.value[0] = val;
2930 	}
2931 	return 0;
2932 }
2933 
2934 static int snd_bbfpro_ctl_info(struct snd_kcontrol *kcontrol,
2935 			       struct snd_ctl_elem_info *uinfo)
2936 {
2937 	u8 reg, idx;
2938 	int pv;
2939 
2940 	pv = kcontrol->private_value;
2941 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
2942 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
2943 
2944 	if (reg == SND_BBFPRO_CTL_REG1 &&
2945 	    idx == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) {
2946 		static const char * const texts[2] = {
2947 			"AutoSync",
2948 			"Internal"
2949 		};
2950 		return snd_ctl_enum_info(uinfo, 1, 2, texts);
2951 	} else if (reg == SND_BBFPRO_CTL_REG2 &&
2952 		   (idx == SND_BBFPRO_CTL_REG2_SENS_IN3 ||
2953 		    idx == SND_BBFPRO_CTL_REG2_SENS_IN4)) {
2954 		static const char * const texts[2] = {
2955 			"-10dBV",
2956 			"+4dBu"
2957 		};
2958 		return snd_ctl_enum_info(uinfo, 1, 2, texts);
2959 	}
2960 
2961 	uinfo->count = 1;
2962 	uinfo->value.integer.min = 0;
2963 	uinfo->value.integer.max = 1;
2964 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2965 	return 0;
2966 }
2967 
2968 static int snd_bbfpro_ctl_put(struct snd_kcontrol *kcontrol,
2969 			      struct snd_ctl_elem_value *ucontrol)
2970 {
2971 	int err;
2972 	u8 reg, idx;
2973 	int old_value, pv, val;
2974 
2975 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2976 	struct usb_mixer_interface *mixer = list->mixer;
2977 
2978 	pv = kcontrol->private_value;
2979 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
2980 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
2981 	old_value = (pv >> SND_BBFPRO_CTL_VAL_SHIFT) & SND_BBFPRO_CTL_VAL_MASK;
2982 
2983 	if ((reg == SND_BBFPRO_CTL_REG1 &&
2984 	     idx == SND_BBFPRO_CTL_REG1_CLK_OPTICAL) ||
2985 	    (reg == SND_BBFPRO_CTL_REG2 &&
2986 	    (idx == SND_BBFPRO_CTL_REG2_SENS_IN3 ||
2987 	     idx == SND_BBFPRO_CTL_REG2_SENS_IN4))) {
2988 		val = ucontrol->value.enumerated.item[0];
2989 	} else {
2990 		val = ucontrol->value.integer.value[0];
2991 	}
2992 
2993 	if (val > 1)
2994 		return -EINVAL;
2995 
2996 	if (val == old_value)
2997 		return 0;
2998 
2999 	kcontrol->private_value = reg
3000 		| ((idx & SND_BBFPRO_CTL_IDX_MASK) << SND_BBFPRO_CTL_IDX_SHIFT)
3001 		| ((val & SND_BBFPRO_CTL_VAL_MASK) << SND_BBFPRO_CTL_VAL_SHIFT);
3002 
3003 	err = snd_bbfpro_ctl_update(mixer, reg, idx, val);
3004 	return err < 0 ? err : 1;
3005 }
3006 
3007 static int snd_bbfpro_ctl_resume(struct usb_mixer_elem_list *list)
3008 {
3009 	u8 reg, idx;
3010 	int value, pv;
3011 
3012 	pv = list->kctl->private_value;
3013 	reg = pv & SND_BBFPRO_CTL_REG_MASK;
3014 	idx = (pv >> SND_BBFPRO_CTL_IDX_SHIFT) & SND_BBFPRO_CTL_IDX_MASK;
3015 	value = (pv >> SND_BBFPRO_CTL_VAL_SHIFT) & SND_BBFPRO_CTL_VAL_MASK;
3016 
3017 	return snd_bbfpro_ctl_update(list->mixer, reg, idx, value);
3018 }
3019 
3020 static int snd_bbfpro_gain_update(struct usb_mixer_interface *mixer,
3021 				  u8 channel, u8 gain)
3022 {
3023 	struct snd_usb_audio *chip = mixer->chip;
3024 
3025 	if (channel < 2) {
3026 		// XLR preamp: 3-bit fine, 5-bit coarse; special case >60
3027 		if (gain < 60)
3028 			gain = ((gain % 3) << 5) | (gain / 3);
3029 		else
3030 			gain = ((gain % 6) << 5) | (60 / 3);
3031 	}
3032 
3033 	CLASS(snd_usb_lock, pm)(chip);
3034 	if (pm.err < 0)
3035 		return pm.err;
3036 
3037 	return snd_usb_ctl_msg(chip->dev,
3038 			       usb_sndctrlpipe(chip->dev, 0),
3039 			       SND_BBFPRO_USBREQ_GAIN,
3040 			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
3041 			       gain, channel, NULL, 0);
3042 }
3043 
3044 static int snd_bbfpro_gain_get(struct snd_kcontrol *kcontrol,
3045 			       struct snd_ctl_elem_value *ucontrol)
3046 {
3047 	int value = kcontrol->private_value & SND_BBFPRO_GAIN_VAL_MASK;
3048 
3049 	ucontrol->value.integer.value[0] = value;
3050 	return 0;
3051 }
3052 
3053 static int snd_bbfpro_gain_info(struct snd_kcontrol *kcontrol,
3054 				struct snd_ctl_elem_info *uinfo)
3055 {
3056 	int pv, channel;
3057 
3058 	pv = kcontrol->private_value;
3059 	channel = (pv >> SND_BBFPRO_GAIN_CHANNEL_SHIFT) &
3060 		SND_BBFPRO_GAIN_CHANNEL_MASK;
3061 
3062 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3063 	uinfo->count = 1;
3064 	uinfo->value.integer.min = SND_BBFPRO_GAIN_VAL_MIN;
3065 
3066 	if (channel < 2)
3067 		uinfo->value.integer.max = SND_BBFPRO_GAIN_VAL_MIC_MAX;
3068 	else
3069 		uinfo->value.integer.max = SND_BBFPRO_GAIN_VAL_LINE_MAX;
3070 
3071 	return 0;
3072 }
3073 
3074 static int snd_bbfpro_gain_put(struct snd_kcontrol *kcontrol,
3075 			       struct snd_ctl_elem_value *ucontrol)
3076 {
3077 	int pv, channel, old_value, value, err;
3078 
3079 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
3080 	struct usb_mixer_interface *mixer = list->mixer;
3081 
3082 	pv = kcontrol->private_value;
3083 	channel = (pv >> SND_BBFPRO_GAIN_CHANNEL_SHIFT) &
3084 		SND_BBFPRO_GAIN_CHANNEL_MASK;
3085 	old_value = pv & SND_BBFPRO_GAIN_VAL_MASK;
3086 	value = ucontrol->value.integer.value[0];
3087 
3088 	if (value < SND_BBFPRO_GAIN_VAL_MIN)
3089 		return -EINVAL;
3090 
3091 	if (channel < 2) {
3092 		if (value > SND_BBFPRO_GAIN_VAL_MIC_MAX)
3093 			return -EINVAL;
3094 	} else {
3095 		if (value > SND_BBFPRO_GAIN_VAL_LINE_MAX)
3096 			return -EINVAL;
3097 	}
3098 
3099 	if (value == old_value)
3100 		return 0;
3101 
3102 	err = snd_bbfpro_gain_update(mixer, channel, value);
3103 	if (err < 0)
3104 		return err;
3105 
3106 	kcontrol->private_value =
3107 		(channel << SND_BBFPRO_GAIN_CHANNEL_SHIFT) | value;
3108 	return 1;
3109 }
3110 
3111 static int snd_bbfpro_gain_resume(struct usb_mixer_elem_list *list)
3112 {
3113 	int pv, channel, value;
3114 	struct snd_kcontrol *kctl = list->kctl;
3115 
3116 	pv = kctl->private_value;
3117 	channel = (pv >> SND_BBFPRO_GAIN_CHANNEL_SHIFT) &
3118 		SND_BBFPRO_GAIN_CHANNEL_MASK;
3119 	value = pv & SND_BBFPRO_GAIN_VAL_MASK;
3120 
3121 	return snd_bbfpro_gain_update(list->mixer, channel, value);
3122 }
3123 
3124 static int snd_bbfpro_vol_update(struct usb_mixer_interface *mixer, u16 index,
3125 				 u32 value)
3126 {
3127 	struct snd_usb_audio *chip = mixer->chip;
3128 	u16 idx;
3129 	u16 usb_idx, usb_val;
3130 	u32 v;
3131 
3132 	CLASS(snd_usb_lock, pm)(chip);
3133 	if (pm.err < 0)
3134 		return pm.err;
3135 
3136 	idx = index & SND_BBFPRO_MIXER_IDX_MASK;
3137 	// 18 bit linear volume, split so 2 bits end up in index.
3138 	v = value & SND_BBFPRO_MIXER_VAL_MASK;
3139 	usb_idx = idx | (v & 0x3) << 14;
3140 	usb_val = (v >> 2) & 0xffff;
3141 
3142 	return snd_usb_ctl_msg(chip->dev,
3143 			       usb_sndctrlpipe(chip->dev, 0),
3144 			       SND_BBFPRO_USBREQ_MIXER,
3145 			       USB_DIR_OUT | USB_TYPE_VENDOR |
3146 			       USB_RECIP_DEVICE,
3147 			       usb_val, usb_idx, NULL, 0);
3148 }
3149 
3150 static int snd_bbfpro_vol_get(struct snd_kcontrol *kcontrol,
3151 			      struct snd_ctl_elem_value *ucontrol)
3152 {
3153 	ucontrol->value.integer.value[0] =
3154 		kcontrol->private_value >> SND_BBFPRO_MIXER_VAL_SHIFT;
3155 	return 0;
3156 }
3157 
3158 static int snd_bbfpro_vol_info(struct snd_kcontrol *kcontrol,
3159 			       struct snd_ctl_elem_info *uinfo)
3160 {
3161 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3162 	uinfo->count = 1;
3163 	uinfo->value.integer.min = SND_BBFPRO_MIXER_VAL_MIN;
3164 	uinfo->value.integer.max = SND_BBFPRO_MIXER_VAL_MAX;
3165 	return 0;
3166 }
3167 
3168 static int snd_bbfpro_vol_put(struct snd_kcontrol *kcontrol,
3169 			      struct snd_ctl_elem_value *ucontrol)
3170 {
3171 	int err;
3172 	u16 idx;
3173 	u32 new_val, old_value, uvalue;
3174 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
3175 	struct usb_mixer_interface *mixer = list->mixer;
3176 
3177 	uvalue = ucontrol->value.integer.value[0];
3178 	idx = kcontrol->private_value & SND_BBFPRO_MIXER_IDX_MASK;
3179 	old_value = kcontrol->private_value >> SND_BBFPRO_MIXER_VAL_SHIFT;
3180 
3181 	if (uvalue > SND_BBFPRO_MIXER_VAL_MAX)
3182 		return -EINVAL;
3183 
3184 	if (uvalue == old_value)
3185 		return 0;
3186 
3187 	new_val = uvalue & SND_BBFPRO_MIXER_VAL_MASK;
3188 
3189 	kcontrol->private_value = idx
3190 		| (new_val << SND_BBFPRO_MIXER_VAL_SHIFT);
3191 
3192 	err = snd_bbfpro_vol_update(mixer, idx, new_val);
3193 	return err < 0 ? err : 1;
3194 }
3195 
3196 static int snd_bbfpro_vol_resume(struct usb_mixer_elem_list *list)
3197 {
3198 	int pv = list->kctl->private_value;
3199 	u16 idx = pv & SND_BBFPRO_MIXER_IDX_MASK;
3200 	u32 val = (pv >> SND_BBFPRO_MIXER_VAL_SHIFT)
3201 		& SND_BBFPRO_MIXER_VAL_MASK;
3202 	return snd_bbfpro_vol_update(list->mixer, idx, val);
3203 }
3204 
3205 // Predfine elements
3206 static const struct snd_kcontrol_new snd_bbfpro_ctl_control = {
3207 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3208 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3209 	.index = 0,
3210 	.info = snd_bbfpro_ctl_info,
3211 	.get = snd_bbfpro_ctl_get,
3212 	.put = snd_bbfpro_ctl_put
3213 };
3214 
3215 static const struct snd_kcontrol_new snd_bbfpro_gain_control = {
3216 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3217 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3218 	.index = 0,
3219 	.info = snd_bbfpro_gain_info,
3220 	.get = snd_bbfpro_gain_get,
3221 	.put = snd_bbfpro_gain_put
3222 };
3223 
3224 static const struct snd_kcontrol_new snd_bbfpro_vol_control = {
3225 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3226 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3227 	.index = 0,
3228 	.info = snd_bbfpro_vol_info,
3229 	.get = snd_bbfpro_vol_get,
3230 	.put = snd_bbfpro_vol_put
3231 };
3232 
3233 static int snd_bbfpro_ctl_add(struct usb_mixer_interface *mixer, u8 reg,
3234 			      u8 index, char *name)
3235 {
3236 	struct snd_kcontrol_new knew = snd_bbfpro_ctl_control;
3237 
3238 	knew.name = name;
3239 	knew.private_value = (reg & SND_BBFPRO_CTL_REG_MASK)
3240 		| ((index & SND_BBFPRO_CTL_IDX_MASK)
3241 			<< SND_BBFPRO_CTL_IDX_SHIFT);
3242 
3243 	return add_single_ctl_with_resume(mixer, 0, snd_bbfpro_ctl_resume,
3244 		&knew, NULL);
3245 }
3246 
3247 static int snd_bbfpro_gain_add(struct usb_mixer_interface *mixer, u8 channel,
3248 			       char *name)
3249 {
3250 	struct snd_kcontrol_new knew = snd_bbfpro_gain_control;
3251 
3252 	knew.name = name;
3253 	knew.private_value = channel << SND_BBFPRO_GAIN_CHANNEL_SHIFT;
3254 
3255 	return add_single_ctl_with_resume(mixer, 0, snd_bbfpro_gain_resume,
3256 		&knew, NULL);
3257 }
3258 
3259 static int snd_bbfpro_vol_add(struct usb_mixer_interface *mixer, u16 index,
3260 			      char *name)
3261 {
3262 	struct snd_kcontrol_new knew = snd_bbfpro_vol_control;
3263 
3264 	knew.name = name;
3265 	knew.private_value = index & SND_BBFPRO_MIXER_IDX_MASK;
3266 
3267 	return add_single_ctl_with_resume(mixer, 0, snd_bbfpro_vol_resume,
3268 		&knew, NULL);
3269 }
3270 
3271 static int snd_bbfpro_controls_create(struct usb_mixer_interface *mixer)
3272 {
3273 	int err, i, o;
3274 	char name[48];
3275 
3276 	static const char * const input[] = {
3277 		"AN1", "AN2", "IN3", "IN4", "AS1", "AS2", "ADAT3",
3278 		"ADAT4", "ADAT5", "ADAT6", "ADAT7", "ADAT8"};
3279 
3280 	static const char * const output[] = {
3281 		"AN1", "AN2", "PH3", "PH4", "AS1", "AS2", "ADAT3", "ADAT4",
3282 		"ADAT5", "ADAT6", "ADAT7", "ADAT8"};
3283 
3284 	for (o = 0 ; o < 12 ; ++o) {
3285 		for (i = 0 ; i < 12 ; ++i) {
3286 			// Line routing
3287 			snprintf(name, sizeof(name),
3288 				 "%s-%s-%s Playback Volume",
3289 				 (i < 2 ? "Mic" : "Line"),
3290 				 input[i], output[o]);
3291 			err = snd_bbfpro_vol_add(mixer, (26 * o + i), name);
3292 			if (err < 0)
3293 				return err;
3294 
3295 			// PCM routing... yes, it is output remapping
3296 			snprintf(name, sizeof(name),
3297 				 "PCM-%s-%s Playback Volume",
3298 				 output[i], output[o]);
3299 			err = snd_bbfpro_vol_add(mixer, (26 * o + 12 + i),
3300 						 name);
3301 			if (err < 0)
3302 				return err;
3303 		}
3304 	}
3305 
3306 	// Main out volume
3307 	for (i = 0 ; i < 12 ; ++i) {
3308 		snprintf(name, sizeof(name), "Main-Out %s", output[i]);
3309 		// Main outs are offset to 992
3310 		err = snd_bbfpro_vol_add(mixer,
3311 					 i + SND_BBFPRO_MIXER_MAIN_OUT_CH_OFFSET,
3312 					 name);
3313 		if (err < 0)
3314 			return err;
3315 	}
3316 
3317 	// Input gain
3318 	for (i = 0 ; i < 4 ; ++i) {
3319 		if (i < 2)
3320 			snprintf(name, sizeof(name), "Mic-%s Gain", input[i]);
3321 		else
3322 			snprintf(name, sizeof(name), "Line-%s Gain", input[i]);
3323 
3324 		err = snd_bbfpro_gain_add(mixer, i, name);
3325 		if (err < 0)
3326 			return err;
3327 	}
3328 
3329 	// Control Reg 1
3330 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
3331 				 SND_BBFPRO_CTL_REG1_CLK_OPTICAL,
3332 				 "Sample Clock Source");
3333 	if (err < 0)
3334 		return err;
3335 
3336 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
3337 				 SND_BBFPRO_CTL_REG1_SPDIF_PRO,
3338 				 "IEC958 Pro Mask");
3339 	if (err < 0)
3340 		return err;
3341 
3342 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
3343 				 SND_BBFPRO_CTL_REG1_SPDIF_EMPH,
3344 				 "IEC958 Emphasis");
3345 	if (err < 0)
3346 		return err;
3347 
3348 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG1,
3349 				 SND_BBFPRO_CTL_REG1_SPDIF_OPTICAL,
3350 				 "IEC958 Switch");
3351 	if (err < 0)
3352 		return err;
3353 
3354 	// Control Reg 2
3355 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
3356 				 SND_BBFPRO_CTL_REG2_48V_AN1,
3357 				 "Mic-AN1 48V");
3358 	if (err < 0)
3359 		return err;
3360 
3361 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
3362 				 SND_BBFPRO_CTL_REG2_48V_AN2,
3363 				 "Mic-AN2 48V");
3364 	if (err < 0)
3365 		return err;
3366 
3367 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
3368 				 SND_BBFPRO_CTL_REG2_SENS_IN3,
3369 				 "Line-IN3 Sens.");
3370 	if (err < 0)
3371 		return err;
3372 
3373 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
3374 				 SND_BBFPRO_CTL_REG2_SENS_IN4,
3375 				 "Line-IN4 Sens.");
3376 	if (err < 0)
3377 		return err;
3378 
3379 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
3380 				 SND_BBFPRO_CTL_REG2_PAD_AN1,
3381 				 "Mic-AN1 PAD");
3382 	if (err < 0)
3383 		return err;
3384 
3385 	err = snd_bbfpro_ctl_add(mixer, SND_BBFPRO_CTL_REG2,
3386 				 SND_BBFPRO_CTL_REG2_PAD_AN2,
3387 				 "Mic-AN2 PAD");
3388 	if (err < 0)
3389 		return err;
3390 
3391 	return 0;
3392 }
3393 
3394 /*
3395  * RME Digiface USB
3396  */
3397 
3398 #define RME_DIGIFACE_READ_STATUS 17
3399 #define RME_DIGIFACE_STATUS_REG0L 0
3400 #define RME_DIGIFACE_STATUS_REG0H 1
3401 #define RME_DIGIFACE_STATUS_REG1L 2
3402 #define RME_DIGIFACE_STATUS_REG1H 3
3403 #define RME_DIGIFACE_STATUS_REG2L 4
3404 #define RME_DIGIFACE_STATUS_REG2H 5
3405 #define RME_DIGIFACE_STATUS_REG3L 6
3406 #define RME_DIGIFACE_STATUS_REG3H 7
3407 
3408 #define RME_DIGIFACE_CTL_REG1 16
3409 #define RME_DIGIFACE_CTL_REG2 18
3410 
3411 /* Reg is overloaded, 0-7 for status halfwords or 16 or 18 for control registers */
3412 #define RME_DIGIFACE_REGISTER(reg, mask) (((reg) << 16) | (mask))
3413 #define RME_DIGIFACE_INVERT BIT(31)
3414 
3415 static int snd_rme_digiface_write_reg(struct snd_kcontrol *kcontrol, int item, u16 mask, u16 val)
3416 {
3417 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
3418 	struct snd_usb_audio *chip = list->mixer->chip;
3419 	struct usb_device *dev = chip->dev;
3420 	int err;
3421 
3422 	err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
3423 			      item,
3424 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
3425 			      val, mask, NULL, 0);
3426 	if (err < 0)
3427 		dev_err(&dev->dev,
3428 			"unable to issue control set request %d (ret = %d)",
3429 			item, err);
3430 	return err;
3431 }
3432 
3433 static int snd_rme_digiface_read_status(struct snd_kcontrol *kcontrol, u32 status[4])
3434 {
3435 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
3436 	struct snd_usb_audio *chip = list->mixer->chip;
3437 	struct usb_device *dev = chip->dev;
3438 	__le32 buf[4];
3439 	int err;
3440 
3441 	err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
3442 			      RME_DIGIFACE_READ_STATUS,
3443 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
3444 			      0, 0,
3445 			      buf, sizeof(buf));
3446 	if (err < 0) {
3447 		dev_err(&dev->dev,
3448 			"unable to issue status read request (ret = %d)",
3449 			err);
3450 	} else {
3451 		for (int i = 0; i < ARRAY_SIZE(buf); i++)
3452 			status[i] = le32_to_cpu(buf[i]);
3453 	}
3454 	return err;
3455 }
3456 
3457 static int snd_rme_digiface_get_status_val(struct snd_kcontrol *kcontrol)
3458 {
3459 	int err;
3460 	u32 status[4];
3461 	bool invert = kcontrol->private_value & RME_DIGIFACE_INVERT;
3462 	u8 reg = (kcontrol->private_value >> 16) & 0xff;
3463 	u16 mask = kcontrol->private_value & 0xffff;
3464 	u16 val;
3465 
3466 	err = snd_rme_digiface_read_status(kcontrol, status);
3467 	if (err < 0)
3468 		return err;
3469 
3470 	switch (reg) {
3471 	/* Status register halfwords */
3472 	case RME_DIGIFACE_STATUS_REG0L ... RME_DIGIFACE_STATUS_REG3H:
3473 		break;
3474 	case RME_DIGIFACE_CTL_REG1: /* Control register 1, present in halfword 3L */
3475 		reg = RME_DIGIFACE_STATUS_REG3L;
3476 		break;
3477 	case RME_DIGIFACE_CTL_REG2: /* Control register 2, present in halfword 3H */
3478 		reg = RME_DIGIFACE_STATUS_REG3H;
3479 		break;
3480 	default:
3481 		return -EINVAL;
3482 	}
3483 
3484 	if (reg & 1)
3485 		val = status[reg >> 1] >> 16;
3486 	else
3487 		val = status[reg >> 1] & 0xffff;
3488 
3489 	if (invert)
3490 		val ^= mask;
3491 
3492 	return field_get(mask, val);
3493 }
3494 
3495 static int snd_rme_digiface_rate_get(struct snd_kcontrol *kcontrol,
3496 				     struct snd_ctl_elem_value *ucontrol)
3497 {
3498 	int freq = snd_rme_digiface_get_status_val(kcontrol);
3499 
3500 	if (freq < 0)
3501 		return freq;
3502 	if (freq >= ARRAY_SIZE(snd_rme_rate_table))
3503 		return -EIO;
3504 
3505 	ucontrol->value.integer.value[0] = snd_rme_rate_table[freq];
3506 	return 0;
3507 }
3508 
3509 static int snd_rme_digiface_enum_get(struct snd_kcontrol *kcontrol,
3510 				     struct snd_ctl_elem_value *ucontrol)
3511 {
3512 	int val = snd_rme_digiface_get_status_val(kcontrol);
3513 
3514 	if (val < 0)
3515 		return val;
3516 
3517 	ucontrol->value.enumerated.item[0] = val;
3518 	return 0;
3519 }
3520 
3521 static int snd_rme_digiface_enum_put(struct snd_kcontrol *kcontrol,
3522 				     struct snd_ctl_elem_value *ucontrol)
3523 {
3524 	bool invert = kcontrol->private_value & RME_DIGIFACE_INVERT;
3525 	u8 reg = (kcontrol->private_value >> 16) & 0xff;
3526 	u16 mask = kcontrol->private_value & 0xffff;
3527 	u16 val = field_prep(mask, ucontrol->value.enumerated.item[0]);
3528 
3529 	if (invert)
3530 		val ^= mask;
3531 
3532 	return snd_rme_digiface_write_reg(kcontrol, reg, mask, val);
3533 }
3534 
3535 static int snd_rme_digiface_current_sync_get(struct snd_kcontrol *kcontrol,
3536 					     struct snd_ctl_elem_value *ucontrol)
3537 {
3538 	int ret = snd_rme_digiface_enum_get(kcontrol, ucontrol);
3539 
3540 	/* 7 means internal for current sync */
3541 	if (ucontrol->value.enumerated.item[0] == 7)
3542 		ucontrol->value.enumerated.item[0] = 0;
3543 
3544 	return ret;
3545 }
3546 
3547 static int snd_rme_digiface_sync_state_get(struct snd_kcontrol *kcontrol,
3548 					   struct snd_ctl_elem_value *ucontrol)
3549 {
3550 	u32 status[4];
3551 	int err;
3552 	bool valid, sync;
3553 
3554 	err = snd_rme_digiface_read_status(kcontrol, status);
3555 	if (err < 0)
3556 		return err;
3557 
3558 	valid = status[0] & BIT(kcontrol->private_value);
3559 	sync = status[0] & BIT(5 + kcontrol->private_value);
3560 
3561 	if (!valid)
3562 		ucontrol->value.enumerated.item[0] = SND_RME_CLOCK_NOLOCK;
3563 	else if (!sync)
3564 		ucontrol->value.enumerated.item[0] = SND_RME_CLOCK_LOCK;
3565 	else
3566 		ucontrol->value.enumerated.item[0] = SND_RME_CLOCK_SYNC;
3567 	return 0;
3568 }
3569 
3570 static int snd_rme_digiface_format_info(struct snd_kcontrol *kcontrol,
3571 					struct snd_ctl_elem_info *uinfo)
3572 {
3573 	static const char *const format[] = {
3574 		"ADAT", "S/PDIF"
3575 	};
3576 
3577 	return snd_ctl_enum_info(uinfo, 1,
3578 				 ARRAY_SIZE(format), format);
3579 }
3580 
3581 static int snd_rme_digiface_sync_source_info(struct snd_kcontrol *kcontrol,
3582 					     struct snd_ctl_elem_info *uinfo)
3583 {
3584 	static const char *const sync_sources[] = {
3585 		"Internal", "Input 1", "Input 2", "Input 3", "Input 4"
3586 	};
3587 
3588 	return snd_ctl_enum_info(uinfo, 1,
3589 				 ARRAY_SIZE(sync_sources), sync_sources);
3590 }
3591 
3592 static int snd_rme_digiface_rate_info(struct snd_kcontrol *kcontrol,
3593 				      struct snd_ctl_elem_info *uinfo)
3594 {
3595 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
3596 	uinfo->count = 1;
3597 	uinfo->value.integer.min = 0;
3598 	uinfo->value.integer.max = 200000;
3599 	uinfo->value.integer.step = 0;
3600 	return 0;
3601 }
3602 
3603 static const struct snd_kcontrol_new snd_rme_digiface_controls[] = {
3604 	{
3605 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3606 		.name = "Input 1 Sync",
3607 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3608 		.info = snd_rme_sync_state_info,
3609 		.get = snd_rme_digiface_sync_state_get,
3610 		.private_value = 0,
3611 	},
3612 	{
3613 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3614 		.name = "Input 1 Format",
3615 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3616 		.info = snd_rme_digiface_format_info,
3617 		.get = snd_rme_digiface_enum_get,
3618 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG0H, BIT(0)) |
3619 			RME_DIGIFACE_INVERT,
3620 	},
3621 	{
3622 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3623 		.name = "Input 1 Rate",
3624 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3625 		.info = snd_rme_digiface_rate_info,
3626 		.get = snd_rme_digiface_rate_get,
3627 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG1L, GENMASK(3, 0)),
3628 	},
3629 	{
3630 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3631 		.name = "Input 2 Sync",
3632 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3633 		.info = snd_rme_sync_state_info,
3634 		.get = snd_rme_digiface_sync_state_get,
3635 		.private_value = 1,
3636 	},
3637 	{
3638 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3639 		.name = "Input 2 Format",
3640 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3641 		.info = snd_rme_digiface_format_info,
3642 		.get = snd_rme_digiface_enum_get,
3643 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG0L, BIT(13)) |
3644 			RME_DIGIFACE_INVERT,
3645 	},
3646 	{
3647 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3648 		.name = "Input 2 Rate",
3649 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3650 		.info = snd_rme_digiface_rate_info,
3651 		.get = snd_rme_digiface_rate_get,
3652 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG1L, GENMASK(7, 4)),
3653 	},
3654 	{
3655 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3656 		.name = "Input 3 Sync",
3657 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3658 		.info = snd_rme_sync_state_info,
3659 		.get = snd_rme_digiface_sync_state_get,
3660 		.private_value = 2,
3661 	},
3662 	{
3663 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3664 		.name = "Input 3 Format",
3665 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3666 		.info = snd_rme_digiface_format_info,
3667 		.get = snd_rme_digiface_enum_get,
3668 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG0L, BIT(14)) |
3669 			RME_DIGIFACE_INVERT,
3670 	},
3671 	{
3672 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3673 		.name = "Input 3 Rate",
3674 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3675 		.info = snd_rme_digiface_rate_info,
3676 		.get = snd_rme_digiface_rate_get,
3677 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG1L, GENMASK(11, 8)),
3678 	},
3679 	{
3680 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3681 		.name = "Input 4 Sync",
3682 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3683 		.info = snd_rme_sync_state_info,
3684 		.get = snd_rme_digiface_sync_state_get,
3685 		.private_value = 3,
3686 	},
3687 	{
3688 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3689 		.name = "Input 4 Format",
3690 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3691 		.info = snd_rme_digiface_format_info,
3692 		.get = snd_rme_digiface_enum_get,
3693 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG0L, GENMASK(15, 12)) |
3694 			RME_DIGIFACE_INVERT,
3695 	},
3696 	{
3697 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3698 		.name = "Input 4 Rate",
3699 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3700 		.info = snd_rme_digiface_rate_info,
3701 		.get = snd_rme_digiface_rate_get,
3702 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG1L, GENMASK(3, 0)),
3703 	},
3704 	{
3705 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3706 		.name = "Output 1 Format",
3707 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3708 		.info = snd_rme_digiface_format_info,
3709 		.get = snd_rme_digiface_enum_get,
3710 		.put = snd_rme_digiface_enum_put,
3711 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_CTL_REG2, BIT(0)),
3712 	},
3713 	{
3714 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3715 		.name = "Output 2 Format",
3716 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3717 		.info = snd_rme_digiface_format_info,
3718 		.get = snd_rme_digiface_enum_get,
3719 		.put = snd_rme_digiface_enum_put,
3720 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_CTL_REG2, BIT(1)),
3721 	},
3722 	{
3723 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3724 		.name = "Output 3 Format",
3725 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3726 		.info = snd_rme_digiface_format_info,
3727 		.get = snd_rme_digiface_enum_get,
3728 		.put = snd_rme_digiface_enum_put,
3729 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_CTL_REG2, BIT(3)),
3730 	},
3731 	{
3732 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3733 		.name = "Output 4 Format",
3734 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3735 		.info = snd_rme_digiface_format_info,
3736 		.get = snd_rme_digiface_enum_get,
3737 		.put = snd_rme_digiface_enum_put,
3738 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_CTL_REG2, BIT(4)),
3739 	},
3740 	{
3741 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3742 		.name = "Sync Source",
3743 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
3744 		.info = snd_rme_digiface_sync_source_info,
3745 		.get = snd_rme_digiface_enum_get,
3746 		.put = snd_rme_digiface_enum_put,
3747 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_CTL_REG1, GENMASK(2, 0)),
3748 	},
3749 	{
3750 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3751 		.name = "Current Sync Source",
3752 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3753 		.info = snd_rme_digiface_sync_source_info,
3754 		.get = snd_rme_digiface_current_sync_get,
3755 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG0L, GENMASK(12, 10)),
3756 	},
3757 	{
3758 		/*
3759 		 * This is writeable, but it is only set by the PCM rate.
3760 		 * Mixer apps currently need to drive the mixer using raw USB requests,
3761 		 * so they can also change this that way to configure the rate for
3762 		 * stand-alone operation when the PCM is closed.
3763 		 */
3764 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3765 		.name = "System Rate",
3766 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3767 		.info = snd_rme_rate_info,
3768 		.get = snd_rme_digiface_rate_get,
3769 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_CTL_REG1, GENMASK(6, 3)),
3770 	},
3771 	{
3772 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
3773 		.name = "Current Rate",
3774 		.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
3775 		.info = snd_rme_rate_info,
3776 		.get = snd_rme_digiface_rate_get,
3777 		.private_value = RME_DIGIFACE_REGISTER(RME_DIGIFACE_STATUS_REG1H, GENMASK(7, 4)),
3778 	}
3779 };
3780 
3781 static int snd_rme_digiface_controls_create(struct usb_mixer_interface *mixer)
3782 {
3783 	int err, i;
3784 
3785 	for (i = 0; i < ARRAY_SIZE(snd_rme_digiface_controls); ++i) {
3786 		err = add_single_ctl_with_resume(mixer, 0,
3787 						 NULL,
3788 						 &snd_rme_digiface_controls[i],
3789 						 NULL);
3790 		if (err < 0)
3791 			return err;
3792 	}
3793 
3794 	return 0;
3795 }
3796 
3797 /*
3798  * Pioneer DJ / AlphaTheta DJM Mixers
3799  *
3800  * These devices generally have options for soft-switching the playback and
3801  * capture sources in addition to the recording level. Although different
3802  * devices have different configurations, there seems to be canonical values
3803  * for specific capture/playback types:  See the definitions of these below.
3804  *
3805  * The wValue is masked with the stereo channel number. e.g. Setting Ch2 to
3806  * capture phono would be 0x0203. Capture, playback and capture level have
3807  * different wIndexes.
3808  */
3809 
3810 // Capture types
3811 #define SND_DJM_CAP_LINE	0x00
3812 #define SND_DJM_CAP_CDLINE	0x01
3813 #define SND_DJM_CAP_DIGITAL	0x02
3814 #define SND_DJM_CAP_PHONO	0x03
3815 #define SND_DJM_CAP_PREFADER	0x05
3816 #define SND_DJM_CAP_PFADER	0x06
3817 #define SND_DJM_CAP_XFADERA	0x07
3818 #define SND_DJM_CAP_XFADERB	0x08
3819 #define SND_DJM_CAP_MIC		0x09
3820 #define SND_DJM_CAP_AUX		0x0d
3821 #define SND_DJM_CAP_RECOUT	0x0a
3822 #define SND_DJM_CAP_RECOUT_NOMIC	0x0e
3823 #define SND_DJM_CAP_NONE	0x0f
3824 #define SND_DJM_CAP_FXSEND	0x10
3825 #define SND_DJM_CAP_CH1PFADER	0x11
3826 #define SND_DJM_CAP_CH2PFADER	0x12
3827 #define SND_DJM_CAP_CH3PFADER	0x13
3828 #define SND_DJM_CAP_CH4PFADER	0x14
3829 #define SND_DJM_CAP_EXT1SEND	0x21
3830 #define SND_DJM_CAP_EXT2SEND	0x22
3831 #define SND_DJM_CAP_CH1PREFADER	0x31
3832 #define SND_DJM_CAP_CH2PREFADER	0x32
3833 #define SND_DJM_CAP_CH3PREFADER	0x33
3834 #define SND_DJM_CAP_CH4PREFADER	0x34
3835 
3836 // Playback types
3837 #define SND_DJM_PB_CH1		0x00
3838 #define SND_DJM_PB_CH2		0x01
3839 #define SND_DJM_PB_AUX		0x04
3840 
3841 #define SND_DJM_WINDEX_CAP	0x8002
3842 #define SND_DJM_WINDEX_CAPLVL	0x8003
3843 #define SND_DJM_WINDEX_PB	0x8016
3844 
3845 // kcontrol->private_value layout
3846 #define SND_DJM_VALUE_MASK	0x0000ffff
3847 #define SND_DJM_GROUP_MASK	0x00ff0000
3848 #define SND_DJM_DEVICE_MASK	0xff000000
3849 #define SND_DJM_GROUP_SHIFT	16
3850 #define SND_DJM_DEVICE_SHIFT	24
3851 
3852 // device table index
3853 // used for the snd_djm_devices table, so please update accordingly
3854 #define SND_DJM_250MK2_IDX	0x0
3855 #define SND_DJM_750_IDX		0x1
3856 #define SND_DJM_850_IDX		0x2
3857 #define SND_DJM_900NXS2_IDX	0x3
3858 #define SND_DJM_750MK2_IDX	0x4
3859 #define SND_DJM_450_IDX		0x5
3860 #define SND_DJM_A9_IDX		0x6
3861 #define SND_DJM_V10_IDX	0x7
3862 
3863 #define SND_DJM_CTL(_name, suffix, _default_value, _windex) { \
3864 	.name = _name, \
3865 	.options = snd_djm_opts_##suffix, \
3866 	.noptions = ARRAY_SIZE(snd_djm_opts_##suffix), \
3867 	.default_value = _default_value, \
3868 	.wIndex = _windex }
3869 
3870 #define SND_DJM_DEVICE(suffix) { \
3871 	.controls = snd_djm_ctls_##suffix, \
3872 	.ncontrols = ARRAY_SIZE(snd_djm_ctls_##suffix) }
3873 
3874 struct snd_djm_device {
3875 	const char *name;
3876 	const struct snd_djm_ctl *controls;
3877 	size_t ncontrols;
3878 };
3879 
3880 struct snd_djm_ctl {
3881 	const char *name;
3882 	const u16 *options;
3883 	size_t noptions;
3884 	u16 default_value;
3885 	u16 wIndex;
3886 };
3887 
3888 static const char *snd_djm_get_label_caplevel_common(u16 wvalue)
3889 {
3890 	switch (wvalue) {
3891 	case 0x0000:	return "-19dB";
3892 	case 0x0100:	return "-15dB";
3893 	case 0x0200:	return "-10dB";
3894 	case 0x0300:	return "-5dB";
3895 	default:	return NULL;
3896 	}
3897 };
3898 
3899 // Models like DJM-A9 or DJM-V10 have different capture levels than others
3900 static const char *snd_djm_get_label_caplevel_high(u16 wvalue)
3901 {
3902 	switch (wvalue) {
3903 	case 0x0000:	return "+15dB";
3904 	case 0x0100:	return "+12dB";
3905 	case 0x0200:	return "+9dB";
3906 	case 0x0300:	return "+6dB";
3907 	case 0x0400:	return "+3dB";
3908 	case 0x0500:	return "0dB";
3909 	default:	return NULL;
3910 	}
3911 };
3912 
3913 static const char *snd_djm_get_label_cap_common(u16 wvalue)
3914 {
3915 	switch (wvalue & 0x00ff) {
3916 	case SND_DJM_CAP_LINE:		return "Control Tone LINE";
3917 	case SND_DJM_CAP_CDLINE:	return "Control Tone CD/LINE";
3918 	case SND_DJM_CAP_DIGITAL:	return "Control Tone DIGITAL";
3919 	case SND_DJM_CAP_PHONO:		return "Control Tone PHONO";
3920 	case SND_DJM_CAP_PFADER:	return "Post Fader";
3921 	case SND_DJM_CAP_XFADERA:	return "Cross Fader A";
3922 	case SND_DJM_CAP_XFADERB:	return "Cross Fader B";
3923 	case SND_DJM_CAP_MIC:		return "Mic";
3924 	case SND_DJM_CAP_RECOUT:	return "Rec Out";
3925 	case SND_DJM_CAP_RECOUT_NOMIC:	return "Rec Out without Mic";
3926 	case SND_DJM_CAP_AUX:		return "Aux";
3927 	case SND_DJM_CAP_NONE:		return "None";
3928 	case SND_DJM_CAP_FXSEND:	return "FX SEND";
3929 	case SND_DJM_CAP_CH1PREFADER:	return "Pre Fader Ch1";
3930 	case SND_DJM_CAP_CH2PREFADER:	return "Pre Fader Ch2";
3931 	case SND_DJM_CAP_CH3PREFADER:	return "Pre Fader Ch3";
3932 	case SND_DJM_CAP_CH4PREFADER:	return "Pre Fader Ch4";
3933 	case SND_DJM_CAP_CH1PFADER:	return "Post Fader Ch1";
3934 	case SND_DJM_CAP_CH2PFADER:	return "Post Fader Ch2";
3935 	case SND_DJM_CAP_CH3PFADER:	return "Post Fader Ch3";
3936 	case SND_DJM_CAP_CH4PFADER:	return "Post Fader Ch4";
3937 	case SND_DJM_CAP_EXT1SEND:	return "EXT1 SEND";
3938 	case SND_DJM_CAP_EXT2SEND:	return "EXT2 SEND";
3939 	default:			return NULL;
3940 	}
3941 };
3942 
3943 // The DJM-850 has different values for CD/LINE and LINE capture
3944 // control options than the other DJM declared in this file.
3945 static const char *snd_djm_get_label_cap_850(u16 wvalue)
3946 {
3947 	switch (wvalue & 0x00ff) {
3948 	case 0x00:		return "Control Tone CD/LINE";
3949 	case 0x01:		return "Control Tone LINE";
3950 	default:		return snd_djm_get_label_cap_common(wvalue);
3951 	}
3952 };
3953 
3954 static const char *snd_djm_get_label_caplevel(u8 device_idx, u16 wvalue)
3955 {
3956 	switch (device_idx) {
3957 	case SND_DJM_A9_IDX:		return snd_djm_get_label_caplevel_high(wvalue);
3958 	case SND_DJM_V10_IDX:		return snd_djm_get_label_caplevel_high(wvalue);
3959 	default:			return snd_djm_get_label_caplevel_common(wvalue);
3960 	}
3961 };
3962 
3963 static const char *snd_djm_get_label_cap(u8 device_idx, u16 wvalue)
3964 {
3965 	switch (device_idx) {
3966 	case SND_DJM_850_IDX:		return snd_djm_get_label_cap_850(wvalue);
3967 	default:			return snd_djm_get_label_cap_common(wvalue);
3968 	}
3969 };
3970 
3971 static const char *snd_djm_get_label_pb(u16 wvalue)
3972 {
3973 	switch (wvalue & 0x00ff) {
3974 	case SND_DJM_PB_CH1:	return "Ch1";
3975 	case SND_DJM_PB_CH2:	return "Ch2";
3976 	case SND_DJM_PB_AUX:	return "Aux";
3977 	default:		return NULL;
3978 	}
3979 };
3980 
3981 static const char *snd_djm_get_label(u8 device_idx, u16 wvalue, u16 windex)
3982 {
3983 	switch (windex) {
3984 	case SND_DJM_WINDEX_CAPLVL:	return snd_djm_get_label_caplevel(device_idx, wvalue);
3985 	case SND_DJM_WINDEX_CAP:	return snd_djm_get_label_cap(device_idx, wvalue);
3986 	case SND_DJM_WINDEX_PB:		return snd_djm_get_label_pb(wvalue);
3987 	default:			return NULL;
3988 	}
3989 };
3990 
3991 // common DJM capture level option values
3992 static const u16 snd_djm_opts_cap_level[] = {
3993 	0x0000, 0x0100, 0x0200, 0x0300 };
3994 
3995 // DJM-250MK2
3996 static const u16 snd_djm_opts_250mk2_cap1[] = {
3997 	0x0103, 0x0100, 0x0106, 0x0107, 0x0108, 0x0109, 0x010d, 0x010a };
3998 
3999 static const u16 snd_djm_opts_250mk2_cap2[] = {
4000 	0x0203, 0x0200, 0x0206, 0x0207, 0x0208, 0x0209, 0x020d, 0x020a };
4001 
4002 static const u16 snd_djm_opts_250mk2_cap3[] = {
4003 	0x030a, 0x0311, 0x0312, 0x0307, 0x0308, 0x0309, 0x030d };
4004 
4005 static const u16 snd_djm_opts_250mk2_pb1[] = { 0x0100, 0x0101, 0x0104 };
4006 static const u16 snd_djm_opts_250mk2_pb2[] = { 0x0200, 0x0201, 0x0204 };
4007 static const u16 snd_djm_opts_250mk2_pb3[] = { 0x0300, 0x0301, 0x0304 };
4008 
4009 static const struct snd_djm_ctl snd_djm_ctls_250mk2[] = {
4010 	SND_DJM_CTL("Master Input Level Capture Switch", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4011 	SND_DJM_CTL("Input 1 Capture Switch",  250mk2_cap1, 2, SND_DJM_WINDEX_CAP),
4012 	SND_DJM_CTL("Input 2 Capture Switch",  250mk2_cap2, 2, SND_DJM_WINDEX_CAP),
4013 	SND_DJM_CTL("Input 3 Capture Switch",  250mk2_cap3, 0, SND_DJM_WINDEX_CAP),
4014 	SND_DJM_CTL("Output 1 Playback Switch", 250mk2_pb1, 0, SND_DJM_WINDEX_PB),
4015 	SND_DJM_CTL("Output 2 Playback Switch", 250mk2_pb2, 1, SND_DJM_WINDEX_PB),
4016 	SND_DJM_CTL("Output 3 Playback Switch", 250mk2_pb3, 2, SND_DJM_WINDEX_PB)
4017 };
4018 
4019 // DJM-450
4020 static const u16 snd_djm_opts_450_cap1[] = {
4021 	0x0103, 0x0100, 0x0106, 0x0107, 0x0108, 0x0109, 0x010d, 0x010a };
4022 
4023 static const u16 snd_djm_opts_450_cap2[] = {
4024 	0x0203, 0x0200, 0x0206, 0x0207, 0x0208, 0x0209, 0x020d, 0x020a };
4025 
4026 static const u16 snd_djm_opts_450_cap3[] = {
4027 	0x030a, 0x0311, 0x0312, 0x0307, 0x0308, 0x0309, 0x030d };
4028 
4029 static const u16 snd_djm_opts_450_pb1[] = { 0x0100, 0x0101, 0x0104 };
4030 static const u16 snd_djm_opts_450_pb2[] = { 0x0200, 0x0201, 0x0204 };
4031 static const u16 snd_djm_opts_450_pb3[] = { 0x0300, 0x0301, 0x0304 };
4032 
4033 static const struct snd_djm_ctl snd_djm_ctls_450[] = {
4034 	SND_DJM_CTL("Master Input Level Capture Switch", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4035 	SND_DJM_CTL("Input 1 Capture Switch",  450_cap1, 2, SND_DJM_WINDEX_CAP),
4036 	SND_DJM_CTL("Input 2 Capture Switch",  450_cap2, 2, SND_DJM_WINDEX_CAP),
4037 	SND_DJM_CTL("Input 3 Capture Switch",  450_cap3, 0, SND_DJM_WINDEX_CAP),
4038 	SND_DJM_CTL("Output 1 Playback Switch", 450_pb1, 0, SND_DJM_WINDEX_PB),
4039 	SND_DJM_CTL("Output 2 Playback Switch", 450_pb2, 1, SND_DJM_WINDEX_PB),
4040 	SND_DJM_CTL("Output 3 Playback Switch", 450_pb3, 2, SND_DJM_WINDEX_PB)
4041 };
4042 
4043 // DJM-750
4044 static const u16 snd_djm_opts_750_cap1[] = {
4045 	0x0101, 0x0103, 0x0106, 0x0107, 0x0108, 0x0109, 0x010a, 0x010f };
4046 static const u16 snd_djm_opts_750_cap2[] = {
4047 	0x0200, 0x0201, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a, 0x020f };
4048 static const u16 snd_djm_opts_750_cap3[] = {
4049 	0x0300, 0x0301, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a, 0x030f };
4050 static const u16 snd_djm_opts_750_cap4[] = {
4051 	0x0401, 0x0403, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a, 0x040f };
4052 
4053 static const struct snd_djm_ctl snd_djm_ctls_750[] = {
4054 	SND_DJM_CTL("Master Input Level Capture Switch", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4055 	SND_DJM_CTL("Input 1 Capture Switch", 750_cap1, 2, SND_DJM_WINDEX_CAP),
4056 	SND_DJM_CTL("Input 2 Capture Switch", 750_cap2, 2, SND_DJM_WINDEX_CAP),
4057 	SND_DJM_CTL("Input 3 Capture Switch", 750_cap3, 0, SND_DJM_WINDEX_CAP),
4058 	SND_DJM_CTL("Input 4 Capture Switch", 750_cap4, 0, SND_DJM_WINDEX_CAP)
4059 };
4060 
4061 // DJM-850
4062 static const u16 snd_djm_opts_850_cap1[] = {
4063 	0x0100, 0x0103, 0x0106, 0x0107, 0x0108, 0x0109, 0x010a, 0x010f };
4064 static const u16 snd_djm_opts_850_cap2[] = {
4065 	0x0200, 0x0201, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a, 0x020f };
4066 static const u16 snd_djm_opts_850_cap3[] = {
4067 	0x0300, 0x0301, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a, 0x030f };
4068 static const u16 snd_djm_opts_850_cap4[] = {
4069 	0x0400, 0x0403, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a, 0x040f };
4070 
4071 static const struct snd_djm_ctl snd_djm_ctls_850[] = {
4072 	SND_DJM_CTL("Master Input Level Capture Switch", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4073 	SND_DJM_CTL("Input 1 Capture Switch", 850_cap1, 1, SND_DJM_WINDEX_CAP),
4074 	SND_DJM_CTL("Input 2 Capture Switch", 850_cap2, 0, SND_DJM_WINDEX_CAP),
4075 	SND_DJM_CTL("Input 3 Capture Switch", 850_cap3, 0, SND_DJM_WINDEX_CAP),
4076 	SND_DJM_CTL("Input 4 Capture Switch", 850_cap4, 1, SND_DJM_WINDEX_CAP)
4077 };
4078 
4079 // DJM-900NXS2
4080 static const u16 snd_djm_opts_900nxs2_cap1[] = {
4081 	0x0100, 0x0102, 0x0103, 0x0106, 0x0107, 0x0108, 0x0109, 0x010a };
4082 static const u16 snd_djm_opts_900nxs2_cap2[] = {
4083 	0x0200, 0x0202, 0x0203, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a };
4084 static const u16 snd_djm_opts_900nxs2_cap3[] = {
4085 	0x0300, 0x0302, 0x0303, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a };
4086 static const u16 snd_djm_opts_900nxs2_cap4[] = {
4087 	0x0400, 0x0402, 0x0403, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a };
4088 static const u16 snd_djm_opts_900nxs2_cap5[] = {
4089 	0x0507, 0x0508, 0x0509, 0x050a, 0x0511, 0x0512, 0x0513, 0x0514 };
4090 
4091 static const struct snd_djm_ctl snd_djm_ctls_900nxs2[] = {
4092 	SND_DJM_CTL("Master Input Level Capture Switch", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4093 	SND_DJM_CTL("Input 1 Capture Switch", 900nxs2_cap1, 2, SND_DJM_WINDEX_CAP),
4094 	SND_DJM_CTL("Input 2 Capture Switch", 900nxs2_cap2, 2, SND_DJM_WINDEX_CAP),
4095 	SND_DJM_CTL("Input 3 Capture Switch", 900nxs2_cap3, 2, SND_DJM_WINDEX_CAP),
4096 	SND_DJM_CTL("Input 4 Capture Switch", 900nxs2_cap4, 2, SND_DJM_WINDEX_CAP),
4097 	SND_DJM_CTL("Input 5 Capture Switch", 900nxs2_cap5, 3, SND_DJM_WINDEX_CAP)
4098 };
4099 
4100 // DJM-750MK2
4101 static const u16 snd_djm_opts_750mk2_cap1[] = {
4102 	0x0100, 0x0102, 0x0103, 0x0106, 0x0107, 0x0108, 0x0109, 0x010a };
4103 static const u16 snd_djm_opts_750mk2_cap2[] = {
4104 	0x0200, 0x0202, 0x0203, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a };
4105 static const u16 snd_djm_opts_750mk2_cap3[] = {
4106 	0x0300, 0x0302, 0x0303, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a };
4107 static const u16 snd_djm_opts_750mk2_cap4[] = {
4108 	0x0400, 0x0402, 0x0403, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a };
4109 static const u16 snd_djm_opts_750mk2_cap5[] = {
4110 	0x0507, 0x0508, 0x0509, 0x050a, 0x0511, 0x0512, 0x0513, 0x0514 };
4111 
4112 static const u16 snd_djm_opts_750mk2_pb1[] = { 0x0100, 0x0101, 0x0104 };
4113 static const u16 snd_djm_opts_750mk2_pb2[] = { 0x0200, 0x0201, 0x0204 };
4114 static const u16 snd_djm_opts_750mk2_pb3[] = { 0x0300, 0x0301, 0x0304 };
4115 
4116 static const struct snd_djm_ctl snd_djm_ctls_750mk2[] = {
4117 	SND_DJM_CTL("Master Input Level Capture Switch", cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4118 	SND_DJM_CTL("Input 1 Capture Switch",   750mk2_cap1, 2, SND_DJM_WINDEX_CAP),
4119 	SND_DJM_CTL("Input 2 Capture Switch",   750mk2_cap2, 2, SND_DJM_WINDEX_CAP),
4120 	SND_DJM_CTL("Input 3 Capture Switch",   750mk2_cap3, 2, SND_DJM_WINDEX_CAP),
4121 	SND_DJM_CTL("Input 4 Capture Switch",   750mk2_cap4, 2, SND_DJM_WINDEX_CAP),
4122 	SND_DJM_CTL("Input 5 Capture Switch",   750mk2_cap5, 3, SND_DJM_WINDEX_CAP),
4123 	SND_DJM_CTL("Output 1 Playback Switch", 750mk2_pb1, 0, SND_DJM_WINDEX_PB),
4124 	SND_DJM_CTL("Output 2 Playback Switch", 750mk2_pb2, 1, SND_DJM_WINDEX_PB),
4125 	SND_DJM_CTL("Output 3 Playback Switch", 750mk2_pb3, 2, SND_DJM_WINDEX_PB)
4126 };
4127 
4128 // DJM-A9
4129 static const u16 snd_djm_opts_a9_cap_level[] = {
4130 	0x0000, 0x0100, 0x0200, 0x0300, 0x0400, 0x0500 };
4131 static const u16 snd_djm_opts_a9_cap1[] = {
4132 	0x0107, 0x0108, 0x0109, 0x010a, 0x010e,
4133 	0x111, 0x112, 0x113, 0x114, 0x0131, 0x132, 0x133, 0x134 };
4134 static const u16 snd_djm_opts_a9_cap2[] = {
4135 	0x0201, 0x0202, 0x0203, 0x0205, 0x0206, 0x0207, 0x0208, 0x0209, 0x020a, 0x020e };
4136 static const u16 snd_djm_opts_a9_cap3[] = {
4137 	0x0301, 0x0302, 0x0303, 0x0305, 0x0306, 0x0307, 0x0308, 0x0309, 0x030a, 0x030e };
4138 static const u16 snd_djm_opts_a9_cap4[] = {
4139 	0x0401, 0x0402, 0x0403, 0x0405, 0x0406, 0x0407, 0x0408, 0x0409, 0x040a, 0x040e };
4140 static const u16 snd_djm_opts_a9_cap5[] = {
4141 	0x0501, 0x0502, 0x0503, 0x0505, 0x0506, 0x0507, 0x0508, 0x0509, 0x050a, 0x050e };
4142 
4143 static const struct snd_djm_ctl snd_djm_ctls_a9[] = {
4144 	SND_DJM_CTL("Master Input Level Capture Switch", a9_cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4145 	SND_DJM_CTL("Master Input Capture Switch", a9_cap1, 3, SND_DJM_WINDEX_CAP),
4146 	SND_DJM_CTL("Input 1 Capture Switch",  a9_cap2, 2, SND_DJM_WINDEX_CAP),
4147 	SND_DJM_CTL("Input 2 Capture Switch",  a9_cap3, 2, SND_DJM_WINDEX_CAP),
4148 	SND_DJM_CTL("Input 3 Capture Switch",  a9_cap4, 2, SND_DJM_WINDEX_CAP),
4149 	SND_DJM_CTL("Input 4 Capture Switch",  a9_cap5, 2, SND_DJM_WINDEX_CAP)
4150 };
4151 
4152 // DJM-V10
4153 static const u16 snd_djm_opts_v10_cap_level[] = {
4154 	0x0000, 0x0100, 0x0200, 0x0300, 0x0400, 0x0500
4155 };
4156 
4157 static const u16 snd_djm_opts_v10_cap1[] = {
4158 	0x0103,
4159 	0x0100, 0x0102, 0x0106, 0x0110, 0x0107,
4160 	0x0108, 0x0109, 0x010a, 0x0121, 0x0122
4161 };
4162 
4163 static const u16 snd_djm_opts_v10_cap2[] = {
4164 	0x0200, 0x0202, 0x0206, 0x0210, 0x0207,
4165 	0x0208, 0x0209, 0x020a, 0x0221, 0x0222
4166 };
4167 
4168 static const u16 snd_djm_opts_v10_cap3[] = {
4169 	0x0303,
4170 	0x0300, 0x0302, 0x0306, 0x0310, 0x0307,
4171 	0x0308, 0x0309, 0x030a, 0x0321, 0x0322
4172 };
4173 
4174 static const u16 snd_djm_opts_v10_cap4[] = {
4175 	0x0403,
4176 	0x0400, 0x0402, 0x0406, 0x0410, 0x0407,
4177 	0x0408, 0x0409, 0x040a, 0x0421, 0x0422
4178 };
4179 
4180 static const u16 snd_djm_opts_v10_cap5[] = {
4181 	0x0500, 0x0502, 0x0506, 0x0510, 0x0507,
4182 	0x0508, 0x0509, 0x050a, 0x0521, 0x0522
4183 };
4184 
4185 static const u16 snd_djm_opts_v10_cap6[] = {
4186 	0x0603,
4187 	0x0600, 0x0602, 0x0606, 0x0610, 0x0607,
4188 	0x0608, 0x0609, 0x060a, 0x0621, 0x0622
4189 };
4190 
4191 static const struct snd_djm_ctl snd_djm_ctls_v10[] = {
4192 	SND_DJM_CTL("Master Input Level Capture Switch", v10_cap_level, 0, SND_DJM_WINDEX_CAPLVL),
4193 	SND_DJM_CTL("Input 1 Capture Switch", v10_cap1, 2, SND_DJM_WINDEX_CAP),
4194 	SND_DJM_CTL("Input 2 Capture Switch", v10_cap2, 2, SND_DJM_WINDEX_CAP),
4195 	SND_DJM_CTL("Input 3 Capture Switch", v10_cap3, 0, SND_DJM_WINDEX_CAP),
4196 	SND_DJM_CTL("Input 4 Capture Switch", v10_cap4, 0, SND_DJM_WINDEX_CAP),
4197 	SND_DJM_CTL("Input 5 Capture Switch", v10_cap5, 0, SND_DJM_WINDEX_CAP),
4198 	SND_DJM_CTL("Input 6 Capture Switch", v10_cap6, 0, SND_DJM_WINDEX_CAP)
4199 	// playback channels are fixed and controlled by hardware knobs on the mixer
4200 };
4201 
4202 static const struct snd_djm_device snd_djm_devices[] = {
4203 	[SND_DJM_250MK2_IDX] = SND_DJM_DEVICE(250mk2),
4204 	[SND_DJM_750_IDX] = SND_DJM_DEVICE(750),
4205 	[SND_DJM_850_IDX] = SND_DJM_DEVICE(850),
4206 	[SND_DJM_900NXS2_IDX] = SND_DJM_DEVICE(900nxs2),
4207 	[SND_DJM_750MK2_IDX] = SND_DJM_DEVICE(750mk2),
4208 	[SND_DJM_450_IDX] = SND_DJM_DEVICE(450),
4209 	[SND_DJM_A9_IDX] = SND_DJM_DEVICE(a9),
4210 	[SND_DJM_V10_IDX] = SND_DJM_DEVICE(v10),
4211 };
4212 
4213 static int snd_djm_controls_info(struct snd_kcontrol *kctl,
4214 				 struct snd_ctl_elem_info *info)
4215 {
4216 	unsigned long private_value = kctl->private_value;
4217 	u8 device_idx = (private_value & SND_DJM_DEVICE_MASK) >> SND_DJM_DEVICE_SHIFT;
4218 	u8 ctl_idx = (private_value & SND_DJM_GROUP_MASK) >> SND_DJM_GROUP_SHIFT;
4219 	const struct snd_djm_device *device = &snd_djm_devices[device_idx];
4220 	const char *name;
4221 	const struct snd_djm_ctl *ctl;
4222 	size_t noptions;
4223 
4224 	if (ctl_idx >= device->ncontrols)
4225 		return -EINVAL;
4226 
4227 	ctl = &device->controls[ctl_idx];
4228 	noptions = ctl->noptions;
4229 	if (info->value.enumerated.item >= noptions)
4230 		info->value.enumerated.item = noptions - 1;
4231 
4232 	name = snd_djm_get_label(device_idx,
4233 				 ctl->options[info->value.enumerated.item],
4234 				 ctl->wIndex);
4235 	if (!name)
4236 		return -EINVAL;
4237 
4238 	strscpy(info->value.enumerated.name, name, sizeof(info->value.enumerated.name));
4239 	info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
4240 	info->count = 1;
4241 	info->value.enumerated.items = noptions;
4242 	return 0;
4243 }
4244 
4245 static int snd_djm_controls_update(struct usb_mixer_interface *mixer,
4246 				   u8 device_idx, u8 group, u16 value)
4247 {
4248 	const struct snd_djm_device *device = &snd_djm_devices[device_idx];
4249 
4250 	if (group >= device->ncontrols || value >= device->controls[group].noptions)
4251 		return -EINVAL;
4252 
4253 	CLASS(snd_usb_lock, pm)(mixer->chip);
4254 	if (pm.err)
4255 		return pm.err;
4256 
4257 	return snd_usb_ctl_msg(mixer->chip->dev,
4258 			       usb_sndctrlpipe(mixer->chip->dev, 0),
4259 			       USB_REQ_SET_FEATURE,
4260 			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
4261 			       device->controls[group].options[value],
4262 			       device->controls[group].wIndex,
4263 			       NULL, 0);
4264 }
4265 
4266 static int snd_djm_controls_get(struct snd_kcontrol *kctl,
4267 				struct snd_ctl_elem_value *elem)
4268 {
4269 	elem->value.enumerated.item[0] = kctl->private_value & SND_DJM_VALUE_MASK;
4270 	return 0;
4271 }
4272 
4273 static int snd_djm_controls_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *elem)
4274 {
4275 	struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
4276 	struct usb_mixer_interface *mixer = list->mixer;
4277 	unsigned long private_value = kctl->private_value;
4278 
4279 	u8 device = (private_value & SND_DJM_DEVICE_MASK) >> SND_DJM_DEVICE_SHIFT;
4280 	u8 group = (private_value & SND_DJM_GROUP_MASK) >> SND_DJM_GROUP_SHIFT;
4281 	u16 value = elem->value.enumerated.item[0];
4282 
4283 	kctl->private_value = (((unsigned long)device << SND_DJM_DEVICE_SHIFT) |
4284 			      (group << SND_DJM_GROUP_SHIFT) |
4285 			      value);
4286 
4287 	return snd_djm_controls_update(mixer, device, group, value);
4288 }
4289 
4290 static int snd_djm_controls_resume(struct usb_mixer_elem_list *list)
4291 {
4292 	unsigned long private_value = list->kctl->private_value;
4293 	u8 device = (private_value & SND_DJM_DEVICE_MASK) >> SND_DJM_DEVICE_SHIFT;
4294 	u8 group = (private_value & SND_DJM_GROUP_MASK) >> SND_DJM_GROUP_SHIFT;
4295 	u16 value = (private_value & SND_DJM_VALUE_MASK);
4296 
4297 	return snd_djm_controls_update(list->mixer, device, group, value);
4298 }
4299 
4300 static int snd_djm_controls_create(struct usb_mixer_interface *mixer,
4301 				   const u8 device_idx)
4302 {
4303 	int err, i;
4304 	u16 value;
4305 
4306 	const struct snd_djm_device *device = &snd_djm_devices[device_idx];
4307 
4308 	struct snd_kcontrol_new knew = {
4309 		.iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
4310 		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
4311 		.index = 0,
4312 		.info = snd_djm_controls_info,
4313 		.get  = snd_djm_controls_get,
4314 		.put  = snd_djm_controls_put
4315 	};
4316 
4317 	for (i = 0; i < device->ncontrols; i++) {
4318 		value = device->controls[i].default_value;
4319 		knew.name = device->controls[i].name;
4320 		knew.private_value =
4321 			((unsigned long)device_idx << SND_DJM_DEVICE_SHIFT) |
4322 			(i << SND_DJM_GROUP_SHIFT) |
4323 			value;
4324 		err = snd_djm_controls_update(mixer, device_idx, i, value);
4325 		if (err)
4326 			return err;
4327 		err = add_single_ctl_with_resume(mixer, 0, snd_djm_controls_resume,
4328 						 &knew, NULL);
4329 		if (err)
4330 			return err;
4331 	}
4332 	return 0;
4333 }
4334 
4335 int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
4336 {
4337 	int err = 0;
4338 
4339 	err = snd_usb_soundblaster_remote_init(mixer);
4340 	if (err < 0)
4341 		return err;
4342 
4343 	switch (mixer->chip->usb_id) {
4344 	/* Tascam US-16x08 */
4345 	case USB_ID(0x0644, 0x8047):
4346 		err = snd_us16x08_controls_create(mixer);
4347 		break;
4348 	case USB_ID(0x041e, 0x3020):
4349 	case USB_ID(0x041e, 0x3040):
4350 	case USB_ID(0x041e, 0x3042):
4351 	case USB_ID(0x041e, 0x30df):
4352 	case USB_ID(0x041e, 0x3048):
4353 		err = snd_audigy2nx_controls_create(mixer);
4354 		if (err < 0)
4355 			break;
4356 		snd_card_ro_proc_new(mixer->chip->card, "audigy2nx",
4357 				     mixer, snd_audigy2nx_proc_read);
4358 		break;
4359 
4360 	/* EMU0204 */
4361 	case USB_ID(0x041e, 0x3f19):
4362 		err = snd_emu0204_controls_create(mixer);
4363 		break;
4364 
4365 #if IS_REACHABLE(CONFIG_INPUT)
4366 	case USB_ID(0x054c, 0x0ce6): /* Sony DualSense controller (PS5) */
4367 	case USB_ID(0x054c, 0x0df2): /* Sony DualSense Edge controller (PS5) */
4368 		err = snd_dualsense_controls_create(mixer);
4369 		break;
4370 #endif /* IS_REACHABLE(CONFIG_INPUT) */
4371 
4372 	case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
4373 	case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
4374 		err = snd_c400_create_mixer(mixer);
4375 		break;
4376 
4377 	case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
4378 	case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
4379 		err = snd_ftu_create_mixer(mixer);
4380 		break;
4381 
4382 	case USB_ID(0x0b05, 0x1739): /* ASUS Xonar U1 */
4383 	case USB_ID(0x0b05, 0x1743): /* ASUS Xonar U1 (2) */
4384 	case USB_ID(0x0b05, 0x17a0): /* ASUS Xonar U3 */
4385 		err = snd_xonar_u1_controls_create(mixer);
4386 		break;
4387 
4388 	case USB_ID(0x0d8c, 0x0103): /* Audio Advantage Micro II */
4389 		err = snd_microii_controls_create(mixer);
4390 		break;
4391 
4392 	case USB_ID(0x0dba, 0x1000): /* Digidesign Mbox 1 */
4393 		err = snd_mbox1_controls_create(mixer);
4394 		break;
4395 
4396 	case USB_ID(0x17cc, 0x1011): /* Traktor Audio 6 */
4397 		err = snd_nativeinstruments_create_mixer(/* checkpatch hack */
4398 				mixer,
4399 				snd_nativeinstruments_ta6_mixers,
4400 				ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
4401 		break;
4402 
4403 	case USB_ID(0x17cc, 0x1021): /* Traktor Audio 10 */
4404 		err = snd_nativeinstruments_create_mixer(/* checkpatch hack */
4405 				mixer,
4406 				snd_nativeinstruments_ta10_mixers,
4407 				ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
4408 		break;
4409 
4410 	case USB_ID(0x200c, 0x1018): /* Electrix Ebox-44 */
4411 		/* detection is disabled in mixer_maps.c */
4412 		err = snd_create_std_mono_table(mixer, ebox44_table);
4413 		break;
4414 
4415 	case USB_ID(0x1235, 0x8010): /* Focusrite Forte */
4416 		err = snd_forte_controls_create(mixer);
4417 		break;
4418 	case USB_ID(0x1235, 0x8012): /* Focusrite Scarlett 6i6 */
4419 	case USB_ID(0x1235, 0x8002): /* Focusrite Scarlett 8i6 */
4420 	case USB_ID(0x1235, 0x8004): /* Focusrite Scarlett 18i6 */
4421 	case USB_ID(0x1235, 0x8014): /* Focusrite Scarlett 18i8 */
4422 	case USB_ID(0x1235, 0x800c): /* Focusrite Scarlett 18i20 */
4423 		err = snd_scarlett_controls_create(mixer);
4424 		break;
4425 
4426 	case USB_ID(0x1235, 0x8203): /* Focusrite Scarlett 6i6 2nd Gen */
4427 	case USB_ID(0x1235, 0x8204): /* Focusrite Scarlett 18i8 2nd Gen */
4428 	case USB_ID(0x1235, 0x8201): /* Focusrite Scarlett 18i20 2nd Gen */
4429 	case USB_ID(0x1235, 0x8211): /* Focusrite Scarlett Solo 3rd Gen */
4430 	case USB_ID(0x1235, 0x8210): /* Focusrite Scarlett 2i2 3rd Gen */
4431 	case USB_ID(0x1235, 0x8212): /* Focusrite Scarlett 4i4 3rd Gen */
4432 	case USB_ID(0x1235, 0x8213): /* Focusrite Scarlett 8i6 3rd Gen */
4433 	case USB_ID(0x1235, 0x8214): /* Focusrite Scarlett 18i8 3rd Gen */
4434 	case USB_ID(0x1235, 0x8215): /* Focusrite Scarlett 18i20 3rd Gen */
4435 	case USB_ID(0x1235, 0x8216): /* Focusrite Vocaster One */
4436 	case USB_ID(0x1235, 0x8217): /* Focusrite Vocaster Two */
4437 	case USB_ID(0x1235, 0x8218): /* Focusrite Scarlett Solo 4th Gen */
4438 	case USB_ID(0x1235, 0x8219): /* Focusrite Scarlett 2i2 4th Gen */
4439 	case USB_ID(0x1235, 0x821a): /* Focusrite Scarlett 4i4 4th Gen */
4440 	case USB_ID(0x1235, 0x8206): /* Focusrite Clarett 2Pre USB */
4441 	case USB_ID(0x1235, 0x8207): /* Focusrite Clarett 4Pre USB */
4442 	case USB_ID(0x1235, 0x8208): /* Focusrite Clarett 8Pre USB */
4443 	case USB_ID(0x1235, 0x820a): /* Focusrite Clarett+ 2Pre */
4444 	case USB_ID(0x1235, 0x820b): /* Focusrite Clarett+ 4Pre */
4445 	case USB_ID(0x1235, 0x820c): /* Focusrite Clarett+ 8Pre */
4446 		err = snd_scarlett2_init(mixer);
4447 		break;
4448 
4449 	case USB_ID(0x1235, 0x821b): /* Focusrite Scarlett 16i16 4th Gen */
4450 	case USB_ID(0x1235, 0x821c): /* Focusrite Scarlett 18i16 4th Gen */
4451 	case USB_ID(0x1235, 0x821d): /* Focusrite Scarlett 18i20 4th Gen */
4452 		err = snd_fcp_init(mixer);
4453 		break;
4454 
4455 	case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */
4456 		err = snd_soundblaster_e1_switch_create(mixer);
4457 		break;
4458 	case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
4459 		err = dell_dock_mixer_create(mixer);
4460 		if (err < 0)
4461 			break;
4462 		err = dell_dock_mixer_init(mixer);
4463 		break;
4464 	case USB_ID(0x0bda, 0x402e): /* Dell WD19 dock */
4465 		err = dell_dock_mixer_create(mixer);
4466 		break;
4467 
4468 	case USB_ID(0x2a39, 0x3fd2): /* RME ADI-2 Pro */
4469 	case USB_ID(0x2a39, 0x3fd3): /* RME ADI-2 DAC */
4470 	case USB_ID(0x2a39, 0x3fd4): /* RME */
4471 		err = snd_rme_controls_create(mixer);
4472 		break;
4473 
4474 	case USB_ID(0x194f, 0x010c): /* Presonus Studio 1810c */
4475 		err = snd_sc1810_init_mixer(mixer);
4476 		break;
4477 	case USB_ID(0x194f, 0x010d): /* Presonus Studio 1824c */
4478 		err = snd_sc1810_init_mixer(mixer);
4479 		break;
4480 	case USB_ID(0x2a39, 0x3fb0): /* RME Babyface Pro FS */
4481 		err = snd_bbfpro_controls_create(mixer);
4482 		break;
4483 	case USB_ID(0x2a39, 0x3f8c): /* RME Digiface USB */
4484 	case USB_ID(0x2a39, 0x3fa0): /* RME Digiface USB (alternate) */
4485 		err = snd_rme_digiface_controls_create(mixer);
4486 		break;
4487 	case USB_ID(0x2b73, 0x0017): /* Pioneer DJ DJM-250MK2 */
4488 		err = snd_djm_controls_create(mixer, SND_DJM_250MK2_IDX);
4489 		break;
4490 	case USB_ID(0x2b73, 0x0013): /* Pioneer DJ DJM-450 */
4491 		err = snd_djm_controls_create(mixer, SND_DJM_450_IDX);
4492 		break;
4493 	case USB_ID(0x08e4, 0x017f): /* Pioneer DJ DJM-750 */
4494 		err = snd_djm_controls_create(mixer, SND_DJM_750_IDX);
4495 		break;
4496 	case USB_ID(0x2b73, 0x001b): /* Pioneer DJ DJM-750MK2 */
4497 		err = snd_djm_controls_create(mixer, SND_DJM_750MK2_IDX);
4498 		break;
4499 	case USB_ID(0x08e4, 0x0163): /* Pioneer DJ DJM-850 */
4500 		err = snd_djm_controls_create(mixer, SND_DJM_850_IDX);
4501 		break;
4502 	case USB_ID(0x2b73, 0x000a): /* Pioneer DJ DJM-900NXS2 */
4503 		err = snd_djm_controls_create(mixer, SND_DJM_900NXS2_IDX);
4504 		break;
4505 	case USB_ID(0x2b73, 0x003c): /* Pioneer DJ / AlphaTheta DJM-A9 */
4506 		err = snd_djm_controls_create(mixer, SND_DJM_A9_IDX);
4507 		break;
4508 	case USB_ID(0x2b73, 0x0034): /* Pioneer DJ DJM-V10 */
4509 		err = snd_djm_controls_create(mixer, SND_DJM_V10_IDX);
4510 		break;
4511 	case USB_ID(0x03f0, 0x0269): /* HP TB Dock G2 */
4512 		err = hp_dock_mixer_create(mixer);
4513 		break;
4514 	}
4515 
4516 	return err;
4517 }
4518 
4519 void snd_usb_mixer_resume_quirk(struct usb_mixer_interface *mixer)
4520 {
4521 	switch (mixer->chip->usb_id) {
4522 	case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
4523 		dell_dock_mixer_init(mixer);
4524 		break;
4525 	}
4526 }
4527 
4528 void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
4529 				    int unitid)
4530 {
4531 	if (!mixer->rc_cfg)
4532 		return;
4533 	/* unit ids specific to Extigy/Audigy 2 NX: */
4534 	switch (unitid) {
4535 	case 0: /* remote control */
4536 		mixer->rc_urb->dev = mixer->chip->dev;
4537 		usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
4538 		break;
4539 	case 4: /* digital in jack */
4540 	case 7: /* line in jacks */
4541 	case 19: /* speaker out jacks */
4542 	case 20: /* headphones out jack */
4543 		break;
4544 	/* live24ext: 4 = line-in jack */
4545 	case 3:	/* hp-out jack (may actuate Mute) */
4546 		if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
4547 		    mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
4548 			snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
4549 		break;
4550 	default:
4551 		usb_audio_dbg(mixer->chip, "memory change in unknown unit %d\n", unitid);
4552 		break;
4553 	}
4554 }
4555 
4556 static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer,
4557 					 struct usb_mixer_elem_info *cval,
4558 					 struct snd_kcontrol *kctl)
4559 {
4560 	/* Approximation using 10 ranges based on output measurement on hw v1.2.
4561 	 * This seems close to the cubic mapping e.g. alsamixer uses.
4562 	 */
4563 	static const DECLARE_TLV_DB_RANGE(scale,
4564 		 0,  1, TLV_DB_MINMAX_ITEM(-5300, -4970),
4565 		 2,  5, TLV_DB_MINMAX_ITEM(-4710, -4160),
4566 		 6,  7, TLV_DB_MINMAX_ITEM(-3884, -3710),
4567 		 8, 14, TLV_DB_MINMAX_ITEM(-3443, -2560),
4568 		15, 16, TLV_DB_MINMAX_ITEM(-2475, -2324),
4569 		17, 19, TLV_DB_MINMAX_ITEM(-2228, -2031),
4570 		20, 26, TLV_DB_MINMAX_ITEM(-1910, -1393),
4571 		27, 31, TLV_DB_MINMAX_ITEM(-1322, -1032),
4572 		32, 40, TLV_DB_MINMAX_ITEM(-968, -490),
4573 		41, 50, TLV_DB_MINMAX_ITEM(-441, 0),
4574 	);
4575 
4576 	if (cval->min == 0 && cval->max == 50) {
4577 		usb_audio_info(mixer->chip, "applying DragonFly dB scale quirk (0-50 variant)\n");
4578 		kctl->tlv.p = scale;
4579 		kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
4580 		kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
4581 
4582 	} else if (cval->min == 0 && cval->max <= 1000) {
4583 		/* Some other clearly broken DragonFly variant.
4584 		 * At least a 0..53 variant (hw v1.0) exists.
4585 		 */
4586 		usb_audio_info(mixer->chip, "ignoring too narrow dB range on a DragonFly device");
4587 		kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
4588 	}
4589 }
4590 
4591 /*
4592  * Some Plantronics headsets have control names that don't meet ALSA naming
4593  * standards. This function fixes nonstandard source names. By the time
4594  * this function is called the control name should look like one of these:
4595  * "source names Playback Volume"
4596  * "source names Playback Switch"
4597  * "source names Capture Volume"
4598  * "source names Capture Switch"
4599  * If any of the trigger words are found in the name then the name will
4600  * be changed to:
4601  * "Headset Playback Volume"
4602  * "Headset Playback Switch"
4603  * "Headset Capture Volume"
4604  * "Headset Capture Switch"
4605  * depending on the current suffix.
4606  */
4607 static void snd_fix_plt_name(struct snd_usb_audio *chip,
4608 			     struct snd_ctl_elem_id *id)
4609 {
4610 	/* no variant of "Sidetone" should be added to this list */
4611 	static const char * const trigger[] = {
4612 		"Earphone", "Microphone", "Receive", "Transmit"
4613 	};
4614 	static const char * const suffix[] = {
4615 		" Playback Volume", " Playback Switch",
4616 		" Capture Volume", " Capture Switch"
4617 	};
4618 	int i;
4619 
4620 	for (i = 0; i < ARRAY_SIZE(trigger); i++)
4621 		if (strstr(id->name, trigger[i]))
4622 			goto triggered;
4623 	usb_audio_dbg(chip, "no change in %s\n", id->name);
4624 	return;
4625 
4626 triggered:
4627 	for (i = 0; i < ARRAY_SIZE(suffix); i++)
4628 		if (strstr(id->name, suffix[i])) {
4629 			usb_audio_dbg(chip, "fixing kctl name %s\n", id->name);
4630 			snprintf(id->name, sizeof(id->name), "Headset%s",
4631 				 suffix[i]);
4632 			return;
4633 		}
4634 	usb_audio_dbg(chip, "something wrong in kctl name %s\n", id->name);
4635 }
4636 
4637 void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
4638 				  struct usb_mixer_elem_info *cval, int unitid,
4639 				  struct snd_kcontrol *kctl)
4640 {
4641 	switch (mixer->chip->usb_id) {
4642 	case USB_ID(0x21b4, 0x0081): /* AudioQuest DragonFly */
4643 		if (unitid == 7 && cval->control == UAC_FU_VOLUME)
4644 			snd_dragonfly_quirk_db_scale(mixer, cval, kctl);
4645 		break;
4646 	}
4647 
4648 	/* lowest playback value is muted on some devices */
4649 	if (mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE)
4650 		if (strstr(kctl->id.name, "Playback")) {
4651 			usb_audio_info(mixer->chip,
4652 				       "applying playback min mute quirk\n");
4653 			cval->min_mute = 1;
4654 		}
4655 
4656 	/* lowest capture value is muted on some devices */
4657 	if (mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_CAPTURE_MIN_MUTE)
4658 		if (strstr(kctl->id.name, "Capture")) {
4659 			usb_audio_info(mixer->chip,
4660 				       "applying capture min mute quirk\n");
4661 			cval->min_mute = 1;
4662 		}
4663 	/* ALSA-ify some Plantronics headset control names */
4664 	if (USB_ID_VENDOR(mixer->chip->usb_id) == 0x047f &&
4665 	    (cval->control == UAC_FU_MUTE || cval->control == UAC_FU_VOLUME))
4666 		snd_fix_plt_name(mixer->chip, &kctl->id);
4667 }
4668