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TOMOYO Linux Cross Reference
Linux/sound/usb/mixer_quirks.c

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

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