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