kernel/sound/usb/mixer_quirks.c

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