sound/usb/mixer_quirks.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   USB Audio Driver for ALSA
   4  *
   5  *   Quirks and vendor-specific extensions for mixer interfaces
   6  *
   7  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
   8  *
   9  *   Many codes borrowed from audio.c by
  10  *          Alan Cox (alan@lxorguk.ukuu.org.uk)
  11  *          Thomas Sailer (sailer@ife.ee.ethz.ch)
  12  *
  13  *   Audio Advantage Micro II support added by:
  14  *          Przemek Rudy (prudy1@o2.pl)
  15  */
  16
  17 #include <linux/hid.h>
  18 #include <linux/init.h>
  19 #include <linux/math64.h>
  20 #include <linux/slab.h>
  21 #include <linux/usb.h>
  22 #include <linux/usb/audio.h>
  23
  24 #include <sound/asoundef.h>
  25 #include <sound/core.h>
  26 #include <sound/control.h>
  27 #include <sound/hwdep.h>
  28 #include <sound/info.h>
  29 #include <sound/tlv.h>
  30
  31 #include "usbaudio.h"
  32 #include "mixer.h"
  33 #include "mixer_quirks.h"
  34 #include "mixer_scarlett.h"
  35 #include "mixer_scarlett_gen2.h"
  36 #include "mixer_us16x08.h"
  37 #include "helper.h"
  38
  39 struct std_mono_table {
  40         unsigned int unitid, control, cmask;
  41         int val_type;
  42         const char *name;
  43         snd_kcontrol_tlv_rw_t *tlv_callback;
  44 };
  45
  46 /* This function allows for the creation of standard UAC controls.
  47  * See the quirks for M-Audio FTUs or Ebox-44.
  48  * If you don't want to set a TLV callback pass NULL.
  49  *
  50  * Since there doesn't seem to be a devices that needs a multichannel
  51  * version, we keep it mono for simplicity.
  52  */
  53 static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
  54                                 unsigned int unitid,
  55                                 unsigned int control,
  56                                 unsigned int cmask,
  57                                 int val_type,
  58                                 unsigned int idx_off,
  59                                 const char *name,
  60                                 snd_kcontrol_tlv_rw_t *tlv_callback)
  61 {
  62         struct usb_mixer_elem_info *cval;
  63         struct snd_kcontrol *kctl;
  64
  65         cval = kzalloc(sizeof(*cval), GFP_KERNEL);
  66         if (!cval)
  67                 return -ENOMEM;
  68
  69         snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid);
  70         cval->val_type = val_type;
  71         cval->channels = 1;
  72         cval->control = control;
  73         cval->cmask = cmask;
  74         cval->idx_off = idx_off;
  75
  76         /* get_min_max() is called only for integer volumes later,
  77          * so provide a short-cut for booleans */
  78         cval->min = 0;
  79         cval->max = 1;
  80         cval->res = 0;
  81         cval->dBmin = 0;
  82         cval->dBmax = 0;
  83
  84         /* Create control */
  85         kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
  86         if (!kctl) {
  87                 kfree(cval);
  88                 return -ENOMEM;
  89         }
  90
  91         /* Set name */
  92         snprintf(kctl->id.name, sizeof(kctl->id.name), name);
  93         kctl->private_free = snd_usb_mixer_elem_free;
  94
  95         /* set TLV */
  96         if (tlv_callback) {
  97                 kctl->tlv.c = tlv_callback;
  98                 kctl->vd[0].access |=
  99                         SNDRV_CTL_ELEM_ACCESS_TLV_READ |
 100                         SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
 101         }
 102         /* Add control to mixer */
 103         return snd_usb_mixer_add_control(&cval->head, kctl);
 104 }
 105
 106 static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
 107                                 unsigned int unitid,
 108                                 unsigned int control,
 109                                 unsigned int cmask,
 110                                 int val_type,
 111                                 const char *name,
 112                                 snd_kcontrol_tlv_rw_t *tlv_callback)
 113 {
 114         return snd_create_std_mono_ctl_offset(mixer, unitid, control, cmask,
 115                 val_type, 0 /* Offset */, name, tlv_callback);
 116 }
 117
 118 /*
 119  * Create a set of standard UAC controls from a table
 120  */
 121 static int snd_create_std_mono_table(struct usb_mixer_interface *mixer,
 122                                      const struct std_mono_table *t)
 123 {
 124         int err;
 125
 126         while (t->name != NULL) {
 127                 err = snd_create_std_mono_ctl(mixer, t->unitid, t->control,
 128                                 t->cmask, t->val_type, t->name, t->tlv_callback);
 129                 if (err < 0)
 130                         return err;
 131                 t++;
 132         }
 133
 134         return 0;
 135 }
 136
 137 static int add_single_ctl_with_resume(struct usb_mixer_interface *mixer,
 138                                       int id,
 139                                       usb_mixer_elem_resume_func_t resume,
 140                                       const struct snd_kcontrol_new *knew,
 141                                       struct usb_mixer_elem_list **listp)
 142 {
 143         struct usb_mixer_elem_list *list;
 144         struct snd_kcontrol *kctl;
 145
 146         list = kzalloc(sizeof(*list), GFP_KERNEL);
 147         if (!list)
 148                 return -ENOMEM;
 149         if (listp)
 150                 *listp = list;
 151         list->mixer = mixer;
 152         list->id = id;
 153         list->resume = resume;
 154         kctl = snd_ctl_new1(knew, list);
 155         if (!kctl) {
 156                 kfree(list);
 157                 return -ENOMEM;
 158         }
 159         kctl->private_free = snd_usb_mixer_elem_free;
 160         /* don't use snd_usb_mixer_add_control() here, this is a special list element */
 161         return snd_usb_mixer_add_list(list, kctl, false);
 162 }
 163
 164 /*
 165  * Sound Blaster remote control configuration
 166  *
 167  * format of remote control data:
 168  * Extigy:       xx 00
 169  * Audigy 2 NX:  06 80 xx 00 00 00
 170  * Live! 24-bit: 06 80 xx yy 22 83
 171  */
 172 static const struct rc_config {
 173         u32 usb_id;
 174         u8  offset;
 175         u8  length;
 176         u8  packet_length;
 177         u8  min_packet_length; /* minimum accepted length of the URB result */
 178         u8  mute_mixer_id;
 179         u32 mute_code;
 180 } rc_configs[] = {
 181         { USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
 182         { USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
 183         { USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
 184         { USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
 185         { USB_ID(0x041e, 0x30df), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
 186         { USB_ID(0x041e, 0x3237), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
 187         { USB_ID(0x041e, 0x3263), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
 188         { USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
 189 };
 190
 191 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
 192 {
 193         struct usb_mixer_interface *mixer = urb->context;
 194         const struct rc_config *rc = mixer->rc_cfg;
 195         u32 code;
 196
 197         if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
 198                 return;
 199
 200         code = mixer->rc_buffer[rc->offset];
 201         if (rc->length == 2)
 202                 code |= mixer->rc_buffer[rc->offset + 1] << 8;
 203
 204         /* the Mute button actually changes the mixer control */
 205         if (code == rc->mute_code)
 206                 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
 207         mixer->rc_code = code;
 208         wmb();
 209         wake_up(&mixer->rc_waitq);
 210 }
 211
 212 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
 213                                      long count, loff_t *offset)
 214 {
 215         struct usb_mixer_interface *mixer = hw->private_data;
 216         int err;
 217         u32 rc_code;
 218
 219         if (count != 1 && count != 4)
 220                 return -EINVAL;
 221         err = wait_event_interruptible(mixer->rc_waitq,
 222                                        (rc_code = xchg(&mixer->rc_code, 0)) != 0);
 223         if (err == 0) {
 224                 if (count == 1)
 225                         err = put_user(rc_code, buf);
 226                 else
 227                         err = put_user(rc_code, (u32 __user *)buf);
 228         }
 229         return err < 0 ? err : count;
 230 }
 231
 232 static __poll_t snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
 233                                             poll_table *wait)
 234 {
 235         struct usb_mixer_interface *mixer = hw->private_data;
 236
 237         poll_wait(file, &mixer->rc_waitq, wait);
 238         return mixer->rc_code ? EPOLLIN | EPOLLRDNORM : 0;
 239 }
 240
 241 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
 242 {
 243         struct snd_hwdep *hwdep;
 244         int err, len, i;
 245
 246         for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
 247                 if (rc_configs[i].usb_id == mixer->chip->usb_id)
 248                         break;
 249         if (i >= ARRAY_SIZE(rc_configs))
 250                 return 0;
 251         mixer->rc_cfg = &rc_configs[i];
 252
 253         len = mixer->rc_cfg->packet_length;
 254
 255         init_waitqueue_head(&mixer->rc_waitq);
 256         err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
 257         if (err < 0)
 258                 return err;
 259         snprintf(hwdep->name, sizeof(hwdep->name),
 260                  "%s remote control", mixer->chip->card->shortname);
 261         hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
 262         hwdep->private_data = mixer;
 263         hwdep->ops.read = snd_usb_sbrc_hwdep_read;
 264         hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
 265         hwdep->exclusive = 1;
 266
 267         mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
 268         if (!mixer->rc_urb)
 269                 return -ENOMEM;
 270         mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
 271         if (!mixer->rc_setup_packet) {
 272                 usb_free_urb(mixer->rc_urb);
 273                 mixer->rc_urb = NULL;
 274                 return -ENOMEM;
 275         }
 276         mixer->rc_setup_packet->bRequestType =
 277                 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
 278         mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
 279         mixer->rc_setup_packet->wValue = cpu_to_le16(0);
 280         mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
 281         mixer->rc_setup_packet->wLength = cpu_to_le16(len);
 282         usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
 283                              usb_rcvctrlpipe(mixer->chip->dev, 0),
 284                              (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
 285                              snd_usb_soundblaster_remote_complete, mixer);
 286         return 0;
 287 }
 288
 289 #define snd_audigy2nx_led_info          snd_ctl_boolean_mono_info
 290
 291 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 292 {
 293         ucontrol->value.integer.value[0] = kcontrol->private_value >> 8;
 294         return 0;
 295 }
 296
 297 static int snd_audigy2nx_led_update(struct usb_mixer_interface *mixer,
 298                                     int value, int index)
 299 {
 300         struct snd_usb_audio *chip = mixer->chip;
 301         int err;
 302
 303         err = snd_usb_lock_shutdown(chip);
 304         if (err < 0)
 305                 return err;
 306
 307         if (chip->usb_id == USB_ID(0x041e, 0x3042))
 308                 err = snd_usb_ctl_msg(chip->dev,
 309                               usb_sndctrlpipe(chip->dev, 0), 0x24,
 310                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 311                               !value, 0, NULL, 0);
 312         /* USB X-Fi S51 Pro */
 313         if (chip->usb_id == USB_ID(0x041e, 0x30df))
 314                 err = snd_usb_ctl_msg(chip->dev,
 315                               usb_sndctrlpipe(chip->dev, 0), 0x24,
 316                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 317                               !value, 0, NULL, 0);
 318         else
 319                 err = snd_usb_ctl_msg(chip->dev,
 320                               usb_sndctrlpipe(chip->dev, 0), 0x24,
 321                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 322                               value, index + 2, NULL, 0);
 323         snd_usb_unlock_shutdown(chip);
 324         return err;
 325 }
 326
 327 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol,
 328                                  struct snd_ctl_elem_value *ucontrol)
 329 {
 330         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 331         struct usb_mixer_interface *mixer = list->mixer;
 332         int index = kcontrol->private_value & 0xff;
 333         unsigned int value = ucontrol->value.integer.value[0];
 334         int old_value = kcontrol->private_value >> 8;
 335         int err;
 336
 337         if (value > 1)
 338                 return -EINVAL;
 339         if (value == old_value)
 340                 return 0;
 341         kcontrol->private_value = (value << 8) | index;
 342         err = snd_audigy2nx_led_update(mixer, value, index);
 343         return err < 0 ? err : 1;
 344 }
 345
 346 static int snd_audigy2nx_led_resume(struct usb_mixer_elem_list *list)
 347 {
 348         int priv_value = list->kctl->private_value;
 349
 350         return snd_audigy2nx_led_update(list->mixer, priv_value >> 8,
 351                                         priv_value & 0xff);
 352 }
 353
 354 /* name and private_value are set dynamically */
 355 static const struct snd_kcontrol_new snd_audigy2nx_control = {
 356         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 357         .info = snd_audigy2nx_led_info,
 358         .get = snd_audigy2nx_led_get,
 359         .put = snd_audigy2nx_led_put,
 360 };
 361
 362 static const char * const snd_audigy2nx_led_names[] = {
 363         "CMSS LED Switch",
 364         "Power LED Switch",
 365         "Dolby Digital LED Switch",
 366 };
 367
 368 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
 369 {
 370         int i, err;
 371
 372         for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_led_names); ++i) {
 373                 struct snd_kcontrol_new knew;
 374
 375                 /* USB X-Fi S51 doesn't have a CMSS LED */
 376                 if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
 377                         continue;
 378                 /* USB X-Fi S51 Pro doesn't have one either */
 379                 if ((mixer->chip->usb_id == USB_ID(0x041e, 0x30df)) && i == 0)
 380                         continue;
 381                 if (i > 1 && /* Live24ext has 2 LEDs only */
 382                         (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
 383                          mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
 384                          mixer->chip->usb_id == USB_ID(0x041e, 0x30df) ||
 385                          mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
 386                         break;
 387
 388                 knew = snd_audigy2nx_control;
 389                 knew.name = snd_audigy2nx_led_names[i];
 390                 knew.private_value = (1 << 8) | i; /* LED on as default */
 391                 err = add_single_ctl_with_resume(mixer, 0,
 392                                                  snd_audigy2nx_led_resume,
 393                                                  &knew, NULL);
 394                 if (err < 0)
 395                         return err;
 396         }
 397         return 0;
 398 }
 399
 400 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
 401                                     struct snd_info_buffer *buffer)
 402 {
 403         static const struct sb_jack {
 404                 int unitid;
 405                 const char *name;
 406         }  jacks_audigy2nx[] = {
 407                 {4,  "dig in "},
 408                 {7,  "line in"},
 409                 {19, "spk out"},
 410                 {20, "hph out"},
 411                 {-1, NULL}
 412         }, jacks_live24ext[] = {
 413                 {4,  "line in"}, /* &1=Line, &2=Mic*/
 414                 {3,  "hph out"}, /* headphones */
 415                 {0,  "RC     "}, /* last command, 6 bytes see rc_config above */
 416                 {-1, NULL}
 417         };
 418         const struct sb_jack *jacks;
 419         struct usb_mixer_interface *mixer = entry->private_data;
 420         int i, err;
 421         u8 buf[3];
 422
 423         snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
 424         if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
 425                 jacks = jacks_audigy2nx;
 426         else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
 427                  mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
 428                 jacks = jacks_live24ext;
 429         else
 430                 return;
 431
 432         for (i = 0; jacks[i].name; ++i) {
 433                 snd_iprintf(buffer, "%s: ", jacks[i].name);
 434                 err = snd_usb_lock_shutdown(mixer->chip);
 435                 if (err < 0)
 436                         return;
 437                 err = snd_usb_ctl_msg(mixer->chip->dev,
 438                                       usb_rcvctrlpipe(mixer->chip->dev, 0),
 439                                       UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
 440                                       USB_RECIP_INTERFACE, 0,
 441                                       jacks[i].unitid << 8, buf, 3);
 442                 snd_usb_unlock_shutdown(mixer->chip);
 443                 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
 444                         snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
 445                 else
 446                         snd_iprintf(buffer, "?\n");
 447         }
 448 }
 449
 450 /* EMU0204 */
 451 static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol,
 452                                       struct snd_ctl_elem_info *uinfo)
 453 {
 454         static const char * const texts[2] = {"1/2", "3/4"};
 455
 456         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
 457 }
 458
 459 static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
 460                                      struct snd_ctl_elem_value *ucontrol)
 461 {
 462         ucontrol->value.enumerated.item[0] = kcontrol->private_value;
 463         return 0;
 464 }
 465
 466 static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
 467                                         int value)
 468 {
 469         struct snd_usb_audio *chip = mixer->chip;
 470         int err;
 471         unsigned char buf[2];
 472
 473         err = snd_usb_lock_shutdown(chip);
 474         if (err < 0)
 475                 return err;
 476
 477         buf[0] = 0x01;
 478         buf[1] = value ? 0x02 : 0x01;
 479         err = snd_usb_ctl_msg(chip->dev,
 480                       usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
 481                       USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
 482                       0x0400, 0x0e00, buf, 2);
 483         snd_usb_unlock_shutdown(chip);
 484         return err;
 485 }
 486
 487 static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
 488                                      struct snd_ctl_elem_value *ucontrol)
 489 {
 490         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 491         struct usb_mixer_interface *mixer = list->mixer;
 492         unsigned int value = ucontrol->value.enumerated.item[0];
 493         int err;
 494
 495         if (value > 1)
 496                 return -EINVAL;
 497
 498         if (value == kcontrol->private_value)
 499                 return 0;
 500
 501         kcontrol->private_value = value;
 502         err = snd_emu0204_ch_switch_update(mixer, value);
 503         return err < 0 ? err : 1;
 504 }
 505
 506 static int snd_emu0204_ch_switch_resume(struct usb_mixer_elem_list *list)
 507 {
 508         return snd_emu0204_ch_switch_update(list->mixer,
 509                                             list->kctl->private_value);
 510 }
 511
 512 static struct snd_kcontrol_new snd_emu0204_control = {
 513         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 514         .name = "Front Jack Channels",
 515         .info = snd_emu0204_ch_switch_info,
 516         .get = snd_emu0204_ch_switch_get,
 517         .put = snd_emu0204_ch_switch_put,
 518         .private_value = 0,
 519 };
 520
 521 static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
 522 {
 523         return add_single_ctl_with_resume(mixer, 0,
 524                                           snd_emu0204_ch_switch_resume,
 525                                           &snd_emu0204_control, NULL);
 526 }
 527
 528 /* ASUS Xonar U1 / U3 controls */
 529
 530 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
 531                                    struct snd_ctl_elem_value *ucontrol)
 532 {
 533         ucontrol->value.integer.value[0] = !!(kcontrol->private_value & 0x02);
 534         return 0;
 535 }
 536
 537 static int snd_xonar_u1_switch_update(struct usb_mixer_interface *mixer,
 538                                       unsigned char status)
 539 {
 540         struct snd_usb_audio *chip = mixer->chip;
 541         int err;
 542
 543         err = snd_usb_lock_shutdown(chip);
 544         if (err < 0)
 545                 return err;
 546         err = snd_usb_ctl_msg(chip->dev,
 547                               usb_sndctrlpipe(chip->dev, 0), 0x08,
 548                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 549                               50, 0, &status, 1);
 550         snd_usb_unlock_shutdown(chip);
 551         return err;
 552 }
 553
 554 static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
 555                                    struct snd_ctl_elem_value *ucontrol)
 556 {
 557         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 558         u8 old_status, new_status;
 559         int err;
 560
 561         old_status = kcontrol->private_value;
 562         if (ucontrol->value.integer.value[0])
 563                 new_status = old_status | 0x02;
 564         else
 565                 new_status = old_status & ~0x02;
 566         if (new_status == old_status)
 567                 return 0;
 568
 569         kcontrol->private_value = new_status;
 570         err = snd_xonar_u1_switch_update(list->mixer, new_status);
 571         return err < 0 ? err : 1;
 572 }
 573
 574 static int snd_xonar_u1_switch_resume(struct usb_mixer_elem_list *list)
 575 {
 576         return snd_xonar_u1_switch_update(list->mixer,
 577                                           list->kctl->private_value);
 578 }
 579
 580 static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
 581         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 582         .name = "Digital Playback Switch",
 583         .info = snd_ctl_boolean_mono_info,
 584         .get = snd_xonar_u1_switch_get,
 585         .put = snd_xonar_u1_switch_put,
 586         .private_value = 0x05,
 587 };
 588
 589 static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
 590 {
 591         return add_single_ctl_with_resume(mixer, 0,
 592                                           snd_xonar_u1_switch_resume,
 593                                           &snd_xonar_u1_output_switch, NULL);
 594 }
 595
 596 /* Digidesign Mbox 1 clock source switch (internal/spdif) */
 597
 598 static int snd_mbox1_switch_get(struct snd_kcontrol *kctl,
 599                                 struct snd_ctl_elem_value *ucontrol)
 600 {
 601         ucontrol->value.enumerated.item[0] = kctl->private_value;
 602         return 0;
 603 }
 604
 605 static int snd_mbox1_switch_update(struct usb_mixer_interface *mixer, int val)
 606 {
 607         struct snd_usb_audio *chip = mixer->chip;
 608         int err;
 609         unsigned char buff[3];
 610
 611         err = snd_usb_lock_shutdown(chip);
 612         if (err < 0)
 613                 return err;
 614
 615         /* Prepare for magic command to toggle clock source */
 616         err = snd_usb_ctl_msg(chip->dev,
 617                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 618                                 USB_DIR_IN |
 619                                 USB_TYPE_CLASS |
 620                                 USB_RECIP_INTERFACE, 0x00, 0x500, buff, 1);
 621         if (err < 0)
 622                 goto err;
 623         err = snd_usb_ctl_msg(chip->dev,
 624                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 625                                 USB_DIR_IN |
 626                                 USB_TYPE_CLASS |
 627                                 USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
 628         if (err < 0)
 629                 goto err;
 630
 631         /* 2 possibilities:     Internal    -> send sample rate
 632          *                      S/PDIF sync -> send zeroes
 633          * NB: Sample rate locked to 48kHz on purpose to
 634          *     prevent user from resetting the sample rate
 635          *     while S/PDIF sync is enabled and confusing
 636          *     this configuration.
 637          */
 638         if (val == 0) {
 639                 buff[0] = 0x80;
 640                 buff[1] = 0xbb;
 641                 buff[2] = 0x00;
 642         } else {
 643                 buff[0] = buff[1] = buff[2] = 0x00;
 644         }
 645
 646         /* Send the magic command to toggle the clock source */
 647         err = snd_usb_ctl_msg(chip->dev,
 648                                 usb_sndctrlpipe(chip->dev, 0), 0x1,
 649                                 USB_TYPE_CLASS |
 650                                 USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
 651         if (err < 0)
 652                 goto err;
 653         err = snd_usb_ctl_msg(chip->dev,
 654                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 655                                 USB_DIR_IN |
 656                                 USB_TYPE_CLASS |
 657                                 USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
 658         if (err < 0)
 659                 goto err;
 660         err = snd_usb_ctl_msg(chip->dev,
 661                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 662                                 USB_DIR_IN |
 663                                 USB_TYPE_CLASS |
 664                                 USB_RECIP_ENDPOINT, 0x100, 0x2, buff, 3);
 665         if (err < 0)
 666                 goto err;
 667
 668 err:
 669         snd_usb_unlock_shutdown(chip);
 670         return err;
 671 }
 672
 673 static int snd_mbox1_switch_put(struct snd_kcontrol *kctl,
 674                                 struct snd_ctl_elem_value *ucontrol)
 675 {
 676         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
 677         struct usb_mixer_interface *mixer = list->mixer;
 678         int err;
 679         bool cur_val, new_val;
 680
 681         cur_val = kctl->private_value;
 682         new_val = ucontrol->value.enumerated.item[0];
 683         if (cur_val == new_val)
 684                 return 0;
 685
 686         kctl->private_value = new_val;
 687         err = snd_mbox1_switch_update(mixer, new_val);
 688         return err < 0 ? err : 1;
 689 }
 690
 691 static int snd_mbox1_switch_info(struct snd_kcontrol *kcontrol,
 692                                  struct snd_ctl_elem_info *uinfo)
 693 {
 694         static const char *const texts[2] = {
 695                 "Internal",
 696                 "S/PDIF"
 697         };
 698
 699         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
 700 }
 701
 702 static int snd_mbox1_switch_resume(struct usb_mixer_elem_list *list)
 703 {
 704         return snd_mbox1_switch_update(list->mixer, list->kctl->private_value);
 705 }
 706
 707 static struct snd_kcontrol_new snd_mbox1_switch = {
 708         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 709         .name = "Clock Source",
 710         .index = 0,
 711         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 712         .info = snd_mbox1_switch_info,
 713         .get = snd_mbox1_switch_get,
 714         .put = snd_mbox1_switch_put,
 715         .private_value = 0
 716 };
 717
 718 static int snd_mbox1_create_sync_switch(struct usb_mixer_interface *mixer)
 719 {
 720         return add_single_ctl_with_resume(mixer, 0,
 721                                           snd_mbox1_switch_resume,
 722                                           &snd_mbox1_switch, NULL);
 723 }
 724
 725 /* Native Instruments device quirks */
 726
 727 #define _MAKE_NI_CONTROL(bRequest,wIndex) ((bRequest) << 16 | (wIndex))
 728
 729 static int snd_ni_control_init_val(struct usb_mixer_interface *mixer,
 730                                    struct snd_kcontrol *kctl)
 731 {
 732         struct usb_device *dev = mixer->chip->dev;
 733         unsigned int pval = kctl->private_value;
 734         u8 value;
 735         int err;
 736
 737         err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
 738                               (pval >> 16) & 0xff,
 739                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 740                               0, pval & 0xffff, &value, 1);
 741         if (err < 0) {
 742                 dev_err(&dev->dev,
 743                         "unable to issue vendor read request (ret = %d)", err);
 744                 return err;
 745         }
 746
 747         kctl->private_value |= ((unsigned int)value << 24);
 748         return 0;
 749 }
 750
 751 static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
 752                                              struct snd_ctl_elem_value *ucontrol)
 753 {
 754         ucontrol->value.integer.value[0] = kcontrol->private_value >> 24;
 755         return 0;
 756 }
 757
 758 static int snd_ni_update_cur_val(struct usb_mixer_elem_list *list)
 759 {
 760         struct snd_usb_audio *chip = list->mixer->chip;
 761         unsigned int pval = list->kctl->private_value;
 762         int err;
 763
 764         err = snd_usb_lock_shutdown(chip);
 765         if (err < 0)
 766                 return err;
 767         err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
 768                               (pval >> 16) & 0xff,
 769                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 770                               pval >> 24, pval & 0xffff, NULL, 0, 1000);
 771         snd_usb_unlock_shutdown(chip);
 772         return err;
 773 }
 774
 775 static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
 776                                              struct snd_ctl_elem_value *ucontrol)
 777 {
 778         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 779         u8 oldval = (kcontrol->private_value >> 24) & 0xff;
 780         u8 newval = ucontrol->value.integer.value[0];
 781         int err;
 782
 783         if (oldval == newval)
 784                 return 0;
 785
 786         kcontrol->private_value &= ~(0xff << 24);
 787         kcontrol->private_value |= (unsigned int)newval << 24;
 788         err = snd_ni_update_cur_val(list);
 789         return err < 0 ? err : 1;
 790 }
 791
 792 static struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
 793         {
 794                 .name = "Direct Thru Channel A",
 795                 .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
 796         },
 797         {
 798                 .name = "Direct Thru Channel B",
 799                 .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
 800         },
 801         {
 802                 .name = "Phono Input Channel A",
 803                 .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
 804         },
 805         {
 806                 .name = "Phono Input Channel B",
 807                 .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
 808         },
 809 };
 810
 811 static struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
 812         {
 813                 .name = "Direct Thru Channel A",
 814                 .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
 815         },
 816         {
 817                 .name = "Direct Thru Channel B",
 818                 .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
 819         },
 820         {
 821                 .name = "Direct Thru Channel C",
 822                 .private_value = _MAKE_NI_CONTROL(0x01, 0x07),
 823         },
 824         {
 825                 .name = "Direct Thru Channel D",
 826                 .private_value = _MAKE_NI_CONTROL(0x01, 0x09),
 827         },
 828         {
 829                 .name = "Phono Input Channel A",
 830                 .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
 831         },
 832         {
 833                 .name = "Phono Input Channel B",
 834                 .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
 835         },
 836         {
 837                 .name = "Phono Input Channel C",
 838                 .private_value = _MAKE_NI_CONTROL(0x02, 0x07),
 839         },
 840         {
 841                 .name = "Phono Input Channel D",
 842                 .private_value = _MAKE_NI_CONTROL(0x02, 0x09),
 843         },
 844 };
 845
 846 static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
 847                                               const struct snd_kcontrol_new *kc,
 848                                               unsigned int count)
 849 {
 850         int i, err = 0;
 851         struct snd_kcontrol_new template = {
 852                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 853                 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 854                 .get = snd_nativeinstruments_control_get,
 855                 .put = snd_nativeinstruments_control_put,
 856                 .info = snd_ctl_boolean_mono_info,
 857         };
 858
 859         for (i = 0; i < count; i++) {
 860                 struct usb_mixer_elem_list *list;
 861
 862                 template.name = kc[i].name;
 863                 template.private_value = kc[i].private_value;
 864
 865                 err = add_single_ctl_with_resume(mixer, 0,
 866                                                  snd_ni_update_cur_val,
 867                                                  &template, &list);
 868                 if (err < 0)
 869                         break;
 870                 snd_ni_control_init_val(mixer, list->kctl);
 871         }
 872
 873         return err;
 874 }
 875
 876 /* M-Audio FastTrack Ultra quirks */
 877 /* FTU Effect switch (also used by C400/C600) */
 878 static int snd_ftu_eff_switch_info(struct snd_kcontrol *kcontrol,
 879                                         struct snd_ctl_elem_info *uinfo)
 880 {
 881         static const char *const texts[8] = {
 882                 "Room 1", "Room 2", "Room 3", "Hall 1",
 883                 "Hall 2", "Plate", "Delay", "Echo"
 884         };
 885
 886         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
 887 }
 888
 889 static int snd_ftu_eff_switch_init(struct usb_mixer_interface *mixer,
 890                                    struct snd_kcontrol *kctl)
 891 {
 892         struct usb_device *dev = mixer->chip->dev;
 893         unsigned int pval = kctl->private_value;
 894         int err;
 895         unsigned char value[2];
 896
 897         value[0] = 0x00;
 898         value[1] = 0x00;
 899
 900         err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
 901                               USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
 902                               pval & 0xff00,
 903                               snd_usb_ctrl_intf(mixer->chip) | ((pval & 0xff) << 8),
 904                               value, 2);
 905         if (err < 0)
 906                 return err;
 907
 908         kctl->private_value |= (unsigned int)value[0] << 24;
 909         return 0;
 910 }
 911
 912 static int snd_ftu_eff_switch_get(struct snd_kcontrol *kctl,
 913                                         struct snd_ctl_elem_value *ucontrol)
 914 {
 915         ucontrol->value.enumerated.item[0] = kctl->private_value >> 24;
 916         return 0;
 917 }
 918
 919 static int snd_ftu_eff_switch_update(struct usb_mixer_elem_list *list)
 920 {
 921         struct snd_usb_audio *chip = list->mixer->chip;
 922         unsigned int pval = list->kctl->private_value;
 923         unsigned char value[2];
 924         int err;
 925
 926         value[0] = pval >> 24;
 927         value[1] = 0;
 928
 929         err = snd_usb_lock_shutdown(chip);
 930         if (err < 0)
 931                 return err;
 932         err = snd_usb_ctl_msg(chip->dev,
 933                               usb_sndctrlpipe(chip->dev, 0),
 934                               UAC_SET_CUR,
 935                               USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
 936                               pval & 0xff00,
 937                               snd_usb_ctrl_intf(chip) | ((pval & 0xff) << 8),
 938                               value, 2);
 939         snd_usb_unlock_shutdown(chip);
 940         return err;
 941 }
 942
 943 static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl,
 944                                         struct snd_ctl_elem_value *ucontrol)
 945 {
 946         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
 947         unsigned int pval = list->kctl->private_value;
 948         int cur_val, err, new_val;
 949
 950         cur_val = pval >> 24;
 951         new_val = ucontrol->value.enumerated.item[0];
 952         if (cur_val == new_val)
 953                 return 0;
 954
 955         kctl->private_value &= ~(0xff << 24);
 956         kctl->private_value |= new_val << 24;
 957         err = snd_ftu_eff_switch_update(list);
 958         return err < 0 ? err : 1;
 959 }
 960
 961 static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
 962         int validx, int bUnitID)
 963 {
 964         static struct snd_kcontrol_new template = {
 965                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 966                 .name = "Effect Program Switch",
 967                 .index = 0,
 968                 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 969                 .info = snd_ftu_eff_switch_info,
 970                 .get = snd_ftu_eff_switch_get,
 971                 .put = snd_ftu_eff_switch_put
 972         };
 973         struct usb_mixer_elem_list *list;
 974         int err;
 975
 976         err = add_single_ctl_with_resume(mixer, bUnitID,
 977                                          snd_ftu_eff_switch_update,
 978                                          &template, &list);
 979         if (err < 0)
 980                 return err;
 981         list->kctl->private_value = (validx << 8) | bUnitID;
 982         snd_ftu_eff_switch_init(mixer, list->kctl);
 983         return 0;
 984 }
 985
 986 /* Create volume controls for FTU devices*/
 987 static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
 988 {
 989         char name[64];
 990         unsigned int control, cmask;
 991         int in, out, err;
 992
 993         const unsigned int id = 5;
 994         const int val_type = USB_MIXER_S16;
 995
 996         for (out = 0; out < 8; out++) {
 997                 control = out + 1;
 998                 for (in = 0; in < 8; in++) {
 999                         cmask = 1 << in;
1000                         snprintf(name, sizeof(name),
1001                                 "AIn%d - Out%d Capture Volume",
1002                                 in  + 1, out + 1);
1003                         err = snd_create_std_mono_ctl(mixer, id, control,
1004                                                         cmask, val_type, name,
1005                                                         &snd_usb_mixer_vol_tlv);
1006                         if (err < 0)
1007                                 return err;
1008                 }
1009                 for (in = 8; in < 16; in++) {
1010                         cmask = 1 << in;
1011                         snprintf(name, sizeof(name),
1012                                 "DIn%d - Out%d Playback Volume",
1013                                 in - 7, out + 1);
1014                         err = snd_create_std_mono_ctl(mixer, id, control,
1015                                                         cmask, val_type, name,
1016                                                         &snd_usb_mixer_vol_tlv);
1017                         if (err < 0)
1018                                 return err;
1019                 }
1020         }
1021
1022         return 0;
1023 }
1024
1025 /* This control needs a volume quirk, see mixer.c */
1026 static int snd_ftu_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1027 {
1028         static const char name[] = "Effect Volume";
1029         const unsigned int id = 6;
1030         const int val_type = USB_MIXER_U8;
1031         const unsigned int control = 2;
1032         const unsigned int cmask = 0;
1033
1034         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1035                                         name, snd_usb_mixer_vol_tlv);
1036 }
1037
1038 /* This control needs a volume quirk, see mixer.c */
1039 static int snd_ftu_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1040 {
1041         static const char name[] = "Effect Duration";
1042         const unsigned int id = 6;
1043         const int val_type = USB_MIXER_S16;
1044         const unsigned int control = 3;
1045         const unsigned int cmask = 0;
1046
1047         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1048                                         name, snd_usb_mixer_vol_tlv);
1049 }
1050
1051 /* This control needs a volume quirk, see mixer.c */
1052 static int snd_ftu_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1053 {
1054         static const char name[] = "Effect Feedback Volume";
1055         const unsigned int id = 6;
1056         const int val_type = USB_MIXER_U8;
1057         const unsigned int control = 4;
1058         const unsigned int cmask = 0;
1059
1060         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1061                                         name, NULL);
1062 }
1063
1064 static int snd_ftu_create_effect_return_ctls(struct usb_mixer_interface *mixer)
1065 {
1066         unsigned int cmask;
1067         int err, ch;
1068         char name[48];
1069
1070         const unsigned int id = 7;
1071         const int val_type = USB_MIXER_S16;
1072         const unsigned int control = 7;
1073
1074         for (ch = 0; ch < 4; ++ch) {
1075                 cmask = 1 << ch;
1076                 snprintf(name, sizeof(name),
1077                         "Effect Return %d Volume", ch + 1);
1078                 err = snd_create_std_mono_ctl(mixer, id, control,
1079                                                 cmask, val_type, name,
1080                                                 snd_usb_mixer_vol_tlv);
1081                 if (err < 0)
1082                         return err;
1083         }
1084
1085         return 0;
1086 }
1087
1088 static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
1089 {
1090         unsigned int  cmask;
1091         int err, ch;
1092         char name[48];
1093
1094         const unsigned int id = 5;
1095         const int val_type = USB_MIXER_S16;
1096         const unsigned int control = 9;
1097
1098         for (ch = 0; ch < 8; ++ch) {
1099                 cmask = 1 << ch;
1100                 snprintf(name, sizeof(name),
1101                         "Effect Send AIn%d Volume", ch + 1);
1102                 err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1103                                                 val_type, name,
1104                                                 snd_usb_mixer_vol_tlv);
1105                 if (err < 0)
1106                         return err;
1107         }
1108         for (ch = 8; ch < 16; ++ch) {
1109                 cmask = 1 << ch;
1110                 snprintf(name, sizeof(name),
1111                         "Effect Send DIn%d Volume", ch - 7);
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         return 0;
1119 }
1120
1121 static int snd_ftu_create_mixer(struct usb_mixer_interface *mixer)
1122 {
1123         int err;
1124
1125         err = snd_ftu_create_volume_ctls(mixer);
1126         if (err < 0)
1127                 return err;
1128
1129         err = snd_ftu_create_effect_switch(mixer, 1, 6);
1130         if (err < 0)
1131                 return err;
1132
1133         err = snd_ftu_create_effect_volume_ctl(mixer);
1134         if (err < 0)
1135                 return err;
1136
1137         err = snd_ftu_create_effect_duration_ctl(mixer);
1138         if (err < 0)
1139                 return err;
1140
1141         err = snd_ftu_create_effect_feedback_ctl(mixer);
1142         if (err < 0)
1143                 return err;
1144
1145         err = snd_ftu_create_effect_return_ctls(mixer);
1146         if (err < 0)
1147                 return err;
1148
1149         err = snd_ftu_create_effect_send_ctls(mixer);
1150         if (err < 0)
1151                 return err;
1152
1153         return 0;
1154 }
1155
1156 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
1157                                unsigned char samplerate_id)
1158 {
1159         struct usb_mixer_interface *mixer;
1160         struct usb_mixer_elem_info *cval;
1161         int unitid = 12; /* SampleRate ExtensionUnit ID */
1162
1163         list_for_each_entry(mixer, &chip->mixer_list, list) {
1164                 if (mixer->id_elems[unitid]) {
1165                         cval = mixer_elem_list_to_info(mixer->id_elems[unitid]);
1166                         snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
1167                                                     cval->control << 8,
1168                                                     samplerate_id);
1169                         snd_usb_mixer_notify_id(mixer, unitid);
1170                         break;
1171                 }
1172         }
1173 }
1174
1175 /* M-Audio Fast Track C400/C600 */
1176 /* C400/C600 volume controls, this control needs a volume quirk, see mixer.c */
1177 static int snd_c400_create_vol_ctls(struct usb_mixer_interface *mixer)
1178 {
1179         char name[64];
1180         unsigned int cmask, offset;
1181         int out, chan, err;
1182         int num_outs = 0;
1183         int num_ins = 0;
1184
1185         const unsigned int id = 0x40;
1186         const int val_type = USB_MIXER_S16;
1187         const int control = 1;
1188
1189         switch (mixer->chip->usb_id) {
1190         case USB_ID(0x0763, 0x2030):
1191                 num_outs = 6;
1192                 num_ins = 4;
1193                 break;
1194         case USB_ID(0x0763, 0x2031):
1195                 num_outs = 8;
1196                 num_ins = 6;
1197                 break;
1198         }
1199
1200         for (chan = 0; chan < num_outs + num_ins; chan++) {
1201                 for (out = 0; out < num_outs; out++) {
1202                         if (chan < num_outs) {
1203                                 snprintf(name, sizeof(name),
1204                                         "PCM%d-Out%d Playback Volume",
1205                                         chan + 1, out + 1);
1206                         } else {
1207                                 snprintf(name, sizeof(name),
1208                                         "In%d-Out%d Playback Volume",
1209                                         chan - num_outs + 1, out + 1);
1210                         }
1211
1212                         cmask = (out == 0) ? 0 : 1 << (out - 1);
1213                         offset = chan * num_outs;
1214                         err = snd_create_std_mono_ctl_offset(mixer, id, control,
1215                                                 cmask, val_type, offset, name,
1216                                                 &snd_usb_mixer_vol_tlv);
1217                         if (err < 0)
1218                                 return err;
1219                 }
1220         }
1221
1222         return 0;
1223 }
1224
1225 /* This control needs a volume quirk, see mixer.c */
1226 static int snd_c400_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1227 {
1228         static const char name[] = "Effect Volume";
1229         const unsigned int id = 0x43;
1230         const int val_type = USB_MIXER_U8;
1231         const unsigned int control = 3;
1232         const unsigned int cmask = 0;
1233
1234         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1235                                         name, snd_usb_mixer_vol_tlv);
1236 }
1237
1238 /* This control needs a volume quirk, see mixer.c */
1239 static int snd_c400_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1240 {
1241         static const char name[] = "Effect Duration";
1242         const unsigned int id = 0x43;
1243         const int val_type = USB_MIXER_S16;
1244         const unsigned int control = 4;
1245         const unsigned int cmask = 0;
1246
1247         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1248                                         name, snd_usb_mixer_vol_tlv);
1249 }
1250
1251 /* This control needs a volume quirk, see mixer.c */
1252 static int snd_c400_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1253 {
1254         static const char name[] = "Effect Feedback Volume";
1255         const unsigned int id = 0x43;
1256         const int val_type = USB_MIXER_U8;
1257         const unsigned int control = 5;
1258         const unsigned int cmask = 0;
1259
1260         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1261                                         name, NULL);
1262 }
1263
1264 static int snd_c400_create_effect_vol_ctls(struct usb_mixer_interface *mixer)
1265 {
1266         char name[64];
1267         unsigned int cmask;
1268         int chan, err;
1269         int num_outs = 0;
1270         int num_ins = 0;
1271
1272         const unsigned int id = 0x42;
1273         const int val_type = USB_MIXER_S16;
1274         const int control = 1;
1275
1276         switch (mixer->chip->usb_id) {
1277         case USB_ID(0x0763, 0x2030):
1278                 num_outs = 6;
1279                 num_ins = 4;
1280                 break;
1281         case USB_ID(0x0763, 0x2031):
1282                 num_outs = 8;
1283                 num_ins = 6;
1284                 break;
1285         }
1286
1287         for (chan = 0; chan < num_outs + num_ins; chan++) {
1288                 if (chan < num_outs) {
1289                         snprintf(name, sizeof(name),
1290                                 "Effect Send DOut%d",
1291                                 chan + 1);
1292                 } else {
1293                         snprintf(name, sizeof(name),
1294                                 "Effect Send AIn%d",
1295                                 chan - num_outs + 1);
1296                 }
1297
1298                 cmask = (chan == 0) ? 0 : 1 << (chan - 1);
1299                 err = snd_create_std_mono_ctl(mixer, id, control,
1300                                                 cmask, val_type, name,
1301                                                 &snd_usb_mixer_vol_tlv);
1302                 if (err < 0)
1303                         return err;
1304         }
1305
1306         return 0;
1307 }
1308
1309 static int snd_c400_create_effect_ret_vol_ctls(struct usb_mixer_interface *mixer)
1310 {
1311         char name[64];
1312         unsigned int cmask;
1313         int chan, err;
1314         int num_outs = 0;
1315         int offset = 0;
1316
1317         const unsigned int id = 0x40;
1318         const int val_type = USB_MIXER_S16;
1319         const int control = 1;
1320
1321         switch (mixer->chip->usb_id) {
1322         case USB_ID(0x0763, 0x2030):
1323                 num_outs = 6;
1324                 offset = 0x3c;
1325                 /* { 0x3c, 0x43, 0x3e, 0x45, 0x40, 0x47 } */
1326                 break;
1327         case USB_ID(0x0763, 0x2031):
1328                 num_outs = 8;
1329                 offset = 0x70;
1330                 /* { 0x70, 0x79, 0x72, 0x7b, 0x74, 0x7d, 0x76, 0x7f } */
1331                 break;
1332         }
1333
1334         for (chan = 0; chan < num_outs; chan++) {
1335                 snprintf(name, sizeof(name),
1336                         "Effect Return %d",
1337                         chan + 1);
1338
1339                 cmask = (chan == 0) ? 0 :
1340                         1 << (chan + (chan % 2) * num_outs - 1);
1341                 err = snd_create_std_mono_ctl_offset(mixer, id, control,
1342                                                 cmask, val_type, offset, name,
1343                                                 &snd_usb_mixer_vol_tlv);
1344                 if (err < 0)
1345                         return err;
1346         }
1347
1348         return 0;
1349 }
1350
1351 static int snd_c400_create_mixer(struct usb_mixer_interface *mixer)
1352 {
1353         int err;
1354
1355         err = snd_c400_create_vol_ctls(mixer);
1356         if (err < 0)
1357                 return err;
1358
1359         err = snd_c400_create_effect_vol_ctls(mixer);
1360         if (err < 0)
1361                 return err;
1362
1363         err = snd_c400_create_effect_ret_vol_ctls(mixer);
1364         if (err < 0)
1365                 return err;
1366
1367         err = snd_ftu_create_effect_switch(mixer, 2, 0x43);
1368         if (err < 0)
1369                 return err;
1370
1371         err = snd_c400_create_effect_volume_ctl(mixer);
1372         if (err < 0)
1373                 return err;
1374
1375         err = snd_c400_create_effect_duration_ctl(mixer);
1376         if (err < 0)
1377                 return err;
1378
1379         err = snd_c400_create_effect_feedback_ctl(mixer);
1380         if (err < 0)
1381                 return err;
1382
1383         return 0;
1384 }
1385
1386 /*
1387  * The mixer units for Ebox-44 are corrupt, and even where they
1388  * are valid they presents mono controls as L and R channels of
1389  * stereo. So we provide a good mixer here.
1390  */
1391 static const struct std_mono_table ebox44_table[] = {
1392         {
1393                 .unitid = 4,
1394                 .control = 1,
1395                 .cmask = 0x0,
1396                 .val_type = USB_MIXER_INV_BOOLEAN,
1397                 .name = "Headphone Playback Switch"
1398         },
1399         {
1400                 .unitid = 4,
1401                 .control = 2,
1402                 .cmask = 0x1,
1403                 .val_type = USB_MIXER_S16,
1404                 .name = "Headphone A Mix Playback Volume"
1405         },
1406         {
1407                 .unitid = 4,
1408                 .control = 2,
1409                 .cmask = 0x2,
1410                 .val_type = USB_MIXER_S16,
1411                 .name = "Headphone B Mix Playback Volume"
1412         },
1413
1414         {
1415                 .unitid = 7,
1416                 .control = 1,
1417                 .cmask = 0x0,
1418                 .val_type = USB_MIXER_INV_BOOLEAN,
1419                 .name = "Output Playback Switch"
1420         },
1421         {
1422                 .unitid = 7,
1423                 .control = 2,
1424                 .cmask = 0x1,
1425                 .val_type = USB_MIXER_S16,
1426                 .name = "Output A Playback Volume"
1427         },
1428         {
1429                 .unitid = 7,
1430                 .control = 2,
1431                 .cmask = 0x2,
1432                 .val_type = USB_MIXER_S16,
1433                 .name = "Output B Playback Volume"
1434         },
1435
1436         {
1437                 .unitid = 10,
1438                 .control = 1,
1439                 .cmask = 0x0,
1440                 .val_type = USB_MIXER_INV_BOOLEAN,
1441                 .name = "Input Capture Switch"
1442         },
1443         {
1444                 .unitid = 10,
1445                 .control = 2,
1446                 .cmask = 0x1,
1447                 .val_type = USB_MIXER_S16,
1448                 .name = "Input A Capture Volume"
1449         },
1450         {
1451                 .unitid = 10,
1452                 .control = 2,
1453                 .cmask = 0x2,
1454                 .val_type = USB_MIXER_S16,
1455                 .name = "Input B Capture Volume"
1456         },
1457
1458         {}
1459 };
1460
1461 /* Audio Advantage Micro II findings:
1462  *
1463  * Mapping spdif AES bits to vendor register.bit:
1464  * AES0: [0 0 0 0 2.3 2.2 2.1 2.0] - default 0x00
1465  * AES1: [3.3 3.2.3.1.3.0 2.7 2.6 2.5 2.4] - default: 0x01
1466  * AES2: [0 0 0 0 0 0 0 0]
1467  * AES3: [0 0 0 0 0 0 x 0] - 'x' bit is set basing on standard usb request
1468  *                           (UAC_EP_CS_ATTR_SAMPLE_RATE) for Audio Devices
1469  *
1470  * power on values:
1471  * r2: 0x10
1472  * r3: 0x20 (b7 is zeroed just before playback (except IEC61937) and set
1473  *           just after it to 0xa0, presumably it disables/mutes some analog
1474  *           parts when there is no audio.)
1475  * r9: 0x28
1476  *
1477  * Optical transmitter on/off:
1478  * vendor register.bit: 9.1
1479  * 0 - on (0x28 register value)
1480  * 1 - off (0x2a register value)
1481  *
1482  */
1483 static int snd_microii_spdif_info(struct snd_kcontrol *kcontrol,
1484         struct snd_ctl_elem_info *uinfo)
1485 {
1486         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1487         uinfo->count = 1;
1488         return 0;
1489 }
1490
1491 static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
1492         struct snd_ctl_elem_value *ucontrol)
1493 {
1494         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1495         struct snd_usb_audio *chip = list->mixer->chip;
1496         int err;
1497         struct usb_interface *iface;
1498         struct usb_host_interface *alts;
1499         unsigned int ep;
1500         unsigned char data[3];
1501         int rate;
1502
1503         err = snd_usb_lock_shutdown(chip);
1504         if (err < 0)
1505                 return err;
1506
1507         ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff;
1508         ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff;
1509         ucontrol->value.iec958.status[2] = 0x00;
1510
1511         /* use known values for that card: interface#1 altsetting#1 */
1512         iface = usb_ifnum_to_if(chip->dev, 1);
1513         if (!iface || iface->num_altsetting < 2) {
1514                 err = -EINVAL;
1515                 goto end;
1516         }
1517         alts = &iface->altsetting[1];
1518         if (get_iface_desc(alts)->bNumEndpoints < 1) {
1519                 err = -EINVAL;
1520                 goto end;
1521         }
1522         ep = get_endpoint(alts, 0)->bEndpointAddress;
1523
1524         err = snd_usb_ctl_msg(chip->dev,
1525                         usb_rcvctrlpipe(chip->dev, 0),
1526                         UAC_GET_CUR,
1527                         USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN,
1528                         UAC_EP_CS_ATTR_SAMPLE_RATE << 8,
1529                         ep,
1530                         data,
1531                         sizeof(data));
1532         if (err < 0)
1533                 goto end;
1534
1535         rate = data[0] | (data[1] << 8) | (data[2] << 16);
1536         ucontrol->value.iec958.status[3] = (rate == 48000) ?
1537                         IEC958_AES3_CON_FS_48000 : IEC958_AES3_CON_FS_44100;
1538
1539         err = 0;
1540  end:
1541         snd_usb_unlock_shutdown(chip);
1542         return err;
1543 }
1544
1545 static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list)
1546 {
1547         struct snd_usb_audio *chip = list->mixer->chip;
1548         unsigned int pval = list->kctl->private_value;
1549         u8 reg;
1550         int err;
1551
1552         err = snd_usb_lock_shutdown(chip);
1553         if (err < 0)
1554                 return err;
1555
1556         reg = ((pval >> 4) & 0xf0) | (pval & 0x0f);
1557         err = snd_usb_ctl_msg(chip->dev,
1558                         usb_sndctrlpipe(chip->dev, 0),
1559                         UAC_SET_CUR,
1560                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1561                         reg,
1562                         2,
1563                         NULL,
1564                         0);
1565         if (err < 0)
1566                 goto end;
1567
1568         reg = (pval & IEC958_AES0_NONAUDIO) ? 0xa0 : 0x20;
1569         reg |= (pval >> 12) & 0x0f;
1570         err = snd_usb_ctl_msg(chip->dev,
1571                         usb_sndctrlpipe(chip->dev, 0),
1572                         UAC_SET_CUR,
1573                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1574                         reg,
1575                         3,
1576                         NULL,
1577                         0);
1578         if (err < 0)
1579                 goto end;
1580
1581  end:
1582         snd_usb_unlock_shutdown(chip);
1583         return err;
1584 }
1585
1586 static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
1587         struct snd_ctl_elem_value *ucontrol)
1588 {
1589         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1590         unsigned int pval, pval_old;
1591         int err;
1592
1593         pval = pval_old = kcontrol->private_value;
1594         pval &= 0xfffff0f0;
1595         pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
1596         pval |= (ucontrol->value.iec958.status[0] & 0x0f);
1597
1598         pval &= 0xffff0fff;
1599         pval |= (ucontrol->value.iec958.status[1] & 0xf0) << 8;
1600
1601         /* The frequency bits in AES3 cannot be set via register access. */
1602
1603         /* Silently ignore any bits from the request that cannot be set. */
1604
1605         if (pval == pval_old)
1606                 return 0;
1607
1608         kcontrol->private_value = pval;
1609         err = snd_microii_spdif_default_update(list);
1610         return err < 0 ? err : 1;
1611 }
1612
1613 static int snd_microii_spdif_mask_get(struct snd_kcontrol *kcontrol,
1614         struct snd_ctl_elem_value *ucontrol)
1615 {
1616         ucontrol->value.iec958.status[0] = 0x0f;
1617         ucontrol->value.iec958.status[1] = 0xff;
1618         ucontrol->value.iec958.status[2] = 0x00;
1619         ucontrol->value.iec958.status[3] = 0x00;
1620
1621         return 0;
1622 }
1623
1624 static int snd_microii_spdif_switch_get(struct snd_kcontrol *kcontrol,
1625         struct snd_ctl_elem_value *ucontrol)
1626 {
1627         ucontrol->value.integer.value[0] = !(kcontrol->private_value & 0x02);
1628
1629         return 0;
1630 }
1631
1632 static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list)
1633 {
1634         struct snd_usb_audio *chip = list->mixer->chip;
1635         u8 reg = list->kctl->private_value;
1636         int err;
1637
1638         err = snd_usb_lock_shutdown(chip);
1639         if (err < 0)
1640                 return err;
1641
1642         err = snd_usb_ctl_msg(chip->dev,
1643                         usb_sndctrlpipe(chip->dev, 0),
1644                         UAC_SET_CUR,
1645                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1646                         reg,
1647                         9,
1648                         NULL,
1649                         0);
1650
1651         snd_usb_unlock_shutdown(chip);
1652         return err;
1653 }
1654
1655 static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol,
1656         struct snd_ctl_elem_value *ucontrol)
1657 {
1658         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1659         u8 reg;
1660         int err;
1661
1662         reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a;
1663         if (reg != list->kctl->private_value)
1664                 return 0;
1665
1666         kcontrol->private_value = reg;
1667         err = snd_microii_spdif_switch_update(list);
1668         return err < 0 ? err : 1;
1669 }
1670
1671 static struct snd_kcontrol_new snd_microii_mixer_spdif[] = {
1672         {
1673                 .iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1674                 .name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
1675                 .info =     snd_microii_spdif_info,
1676                 .get =      snd_microii_spdif_default_get,
1677                 .put =      snd_microii_spdif_default_put,
1678                 .private_value = 0x00000100UL,/* reset value */
1679         },
1680         {
1681                 .access =   SNDRV_CTL_ELEM_ACCESS_READ,
1682                 .iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1683                 .name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
1684                 .info =     snd_microii_spdif_info,
1685                 .get =      snd_microii_spdif_mask_get,
1686         },
1687         {
1688                 .iface =    SNDRV_CTL_ELEM_IFACE_MIXER,
1689                 .name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
1690                 .info =     snd_ctl_boolean_mono_info,
1691                 .get =      snd_microii_spdif_switch_get,
1692                 .put =      snd_microii_spdif_switch_put,
1693                 .private_value = 0x00000028UL,/* reset value */
1694         }
1695 };
1696
1697 static int snd_microii_controls_create(struct usb_mixer_interface *mixer)
1698 {
1699         int err, i;
1700         static const usb_mixer_elem_resume_func_t resume_funcs[] = {
1701                 snd_microii_spdif_default_update,
1702                 NULL,
1703                 snd_microii_spdif_switch_update
1704         };
1705
1706         for (i = 0; i < ARRAY_SIZE(snd_microii_mixer_spdif); ++i) {
1707                 err = add_single_ctl_with_resume(mixer, 0,
1708                                                  resume_funcs[i],
1709                                                  &snd_microii_mixer_spdif[i],
1710                                                  NULL);
1711                 if (err < 0)
1712                         return err;
1713         }
1714
1715         return 0;
1716 }
1717
1718 /* Creative Sound Blaster E1 */
1719
1720 static int snd_soundblaster_e1_switch_get(struct snd_kcontrol *kcontrol,
1721                                           struct snd_ctl_elem_value *ucontrol)
1722 {
1723         ucontrol->value.integer.value[0] = kcontrol->private_value;
1724         return 0;
1725 }
1726
1727 static int snd_soundblaster_e1_switch_update(struct usb_mixer_interface *mixer,
1728                                              unsigned char state)
1729 {
1730         struct snd_usb_audio *chip = mixer->chip;
1731         int err;
1732         unsigned char buff[2];
1733
1734         buff[0] = 0x02;
1735         buff[1] = state ? 0x02 : 0x00;
1736
1737         err = snd_usb_lock_shutdown(chip);
1738         if (err < 0)
1739                 return err;
1740         err = snd_usb_ctl_msg(chip->dev,
1741                         usb_sndctrlpipe(chip->dev, 0), HID_REQ_SET_REPORT,
1742                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
1743                         0x0202, 3, buff, 2);
1744         snd_usb_unlock_shutdown(chip);
1745         return err;
1746 }
1747
1748 static int snd_soundblaster_e1_switch_put(struct snd_kcontrol *kcontrol,
1749                                           struct snd_ctl_elem_value *ucontrol)
1750 {
1751         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1752         unsigned char value = !!ucontrol->value.integer.value[0];
1753         int err;
1754
1755         if (kcontrol->private_value == value)
1756                 return 0;
1757         kcontrol->private_value = value;
1758         err = snd_soundblaster_e1_switch_update(list->mixer, value);
1759         return err < 0 ? err : 1;
1760 }
1761
1762 static int snd_soundblaster_e1_switch_resume(struct usb_mixer_elem_list *list)
1763 {
1764         return snd_soundblaster_e1_switch_update(list->mixer,
1765                                                  list->kctl->private_value);
1766 }
1767
1768 static int snd_soundblaster_e1_switch_info(struct snd_kcontrol *kcontrol,
1769                                            struct snd_ctl_elem_info *uinfo)
1770 {
1771         static const char *const texts[2] = {
1772                 "Mic", "Aux"
1773         };
1774
1775         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
1776 }
1777
1778 static struct snd_kcontrol_new snd_soundblaster_e1_input_switch = {
1779         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1780         .name = "Input Source",
1781         .info = snd_soundblaster_e1_switch_info,
1782         .get = snd_soundblaster_e1_switch_get,
1783         .put = snd_soundblaster_e1_switch_put,
1784         .private_value = 0,
1785 };
1786
1787 static int snd_soundblaster_e1_switch_create(struct usb_mixer_interface *mixer)
1788 {
1789         return add_single_ctl_with_resume(mixer, 0,
1790                                           snd_soundblaster_e1_switch_resume,
1791                                           &snd_soundblaster_e1_input_switch,
1792                                           NULL);
1793 }
1794
1795 static void dell_dock_init_vol(struct snd_usb_audio *chip, int ch, int id)
1796 {
1797         u16 buf = 0;
1798
1799         snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
1800                         USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
1801                         ch, snd_usb_ctrl_intf(chip) | (id << 8),
1802                         &buf, 2);
1803 }
1804
1805 static int dell_dock_mixer_init(struct usb_mixer_interface *mixer)
1806 {
1807         /* fix to 0dB playback volumes */
1808         dell_dock_init_vol(mixer->chip, 1, 16);
1809         dell_dock_init_vol(mixer->chip, 2, 16);
1810         dell_dock_init_vol(mixer->chip, 1, 19);
1811         dell_dock_init_vol(mixer->chip, 2, 19);
1812         return 0;
1813 }
1814
1815 /* RME Class Compliant device quirks */
1816
1817 #define SND_RME_GET_STATUS1                     23
1818 #define SND_RME_GET_CURRENT_FREQ                17
1819 #define SND_RME_CLK_SYSTEM_SHIFT                16
1820 #define SND_RME_CLK_SYSTEM_MASK                 0x1f
1821 #define SND_RME_CLK_AES_SHIFT                   8
1822 #define SND_RME_CLK_SPDIF_SHIFT                 12
1823 #define SND_RME_CLK_AES_SPDIF_MASK              0xf
1824 #define SND_RME_CLK_SYNC_SHIFT                  6
1825 #define SND_RME_CLK_SYNC_MASK                   0x3
1826 #define SND_RME_CLK_FREQMUL_SHIFT               18
1827 #define SND_RME_CLK_FREQMUL_MASK                0x7
1828 #define SND_RME_CLK_SYSTEM(x) \
1829         ((x >> SND_RME_CLK_SYSTEM_SHIFT) & SND_RME_CLK_SYSTEM_MASK)
1830 #define SND_RME_CLK_AES(x) \
1831         ((x >> SND_RME_CLK_AES_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
1832 #define SND_RME_CLK_SPDIF(x) \
1833         ((x >> SND_RME_CLK_SPDIF_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
1834 #define SND_RME_CLK_SYNC(x) \
1835         ((x >> SND_RME_CLK_SYNC_SHIFT) & SND_RME_CLK_SYNC_MASK)
1836 #define SND_RME_CLK_FREQMUL(x) \
1837         ((x >> SND_RME_CLK_FREQMUL_SHIFT) & SND_RME_CLK_FREQMUL_MASK)
1838 #define SND_RME_CLK_AES_LOCK                    0x1
1839 #define SND_RME_CLK_AES_SYNC                    0x4
1840 #define SND_RME_CLK_SPDIF_LOCK                  0x2
1841 #define SND_RME_CLK_SPDIF_SYNC                  0x8
1842 #define SND_RME_SPDIF_IF_SHIFT                  4
1843 #define SND_RME_SPDIF_FORMAT_SHIFT              5
1844 #define SND_RME_BINARY_MASK                     0x1
1845 #define SND_RME_SPDIF_IF(x) \
1846         ((x >> SND_RME_SPDIF_IF_SHIFT) & SND_RME_BINARY_MASK)
1847 #define SND_RME_SPDIF_FORMAT(x) \
1848         ((x >> SND_RME_SPDIF_FORMAT_SHIFT) & SND_RME_BINARY_MASK)
1849
1850 static const u32 snd_rme_rate_table[] = {
1851         32000, 44100, 48000, 50000,
1852         64000, 88200, 96000, 100000,
1853         128000, 176400, 192000, 200000,
1854         256000, 352800, 384000, 400000,
1855         512000, 705600, 768000, 800000
1856 };
1857 /* maximum number of items for AES and S/PDIF rates for above table */
1858 #define SND_RME_RATE_IDX_AES_SPDIF_NUM          12
1859
1860 enum snd_rme_domain {
1861         SND_RME_DOMAIN_SYSTEM,
1862         SND_RME_DOMAIN_AES,
1863         SND_RME_DOMAIN_SPDIF
1864 };
1865
1866 enum snd_rme_clock_status {
1867         SND_RME_CLOCK_NOLOCK,
1868         SND_RME_CLOCK_LOCK,
1869         SND_RME_CLOCK_SYNC
1870 };
1871
1872 static int snd_rme_read_value(struct snd_usb_audio *chip,
1873                               unsigned int item,
1874                               u32 *value)
1875 {
1876         struct usb_device *dev = chip->dev;
1877         int err;
1878
1879         err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
1880                               item,
1881                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1882                               0, 0,
1883                               value, sizeof(*value));
1884         if (err < 0)
1885                 dev_err(&dev->dev,
1886                         "unable to issue vendor read request %d (ret = %d)",
1887                         item, err);
1888         return err;
1889 }
1890
1891 static int snd_rme_get_status1(struct snd_kcontrol *kcontrol,
1892                                u32 *status1)
1893 {
1894         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1895         struct snd_usb_audio *chip = list->mixer->chip;
1896         int err;
1897
1898         err = snd_usb_lock_shutdown(chip);
1899         if (err < 0)
1900                 return err;
1901         err = snd_rme_read_value(chip, SND_RME_GET_STATUS1, status1);
1902         snd_usb_unlock_shutdown(chip);
1903         return err;
1904 }
1905
1906 static int snd_rme_rate_get(struct snd_kcontrol *kcontrol,
1907                             struct snd_ctl_elem_value *ucontrol)
1908 {
1909         u32 status1;
1910         u32 rate = 0;
1911         int idx;
1912         int err;
1913
1914         err = snd_rme_get_status1(kcontrol, &status1);
1915         if (err < 0)
1916                 return err;
1917         switch (kcontrol->private_value) {
1918         case SND_RME_DOMAIN_SYSTEM:
1919                 idx = SND_RME_CLK_SYSTEM(status1);
1920                 if (idx < ARRAY_SIZE(snd_rme_rate_table))
1921                         rate = snd_rme_rate_table[idx];
1922                 break;
1923         case SND_RME_DOMAIN_AES:
1924                 idx = SND_RME_CLK_AES(status1);
1925                 if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
1926                         rate = snd_rme_rate_table[idx];
1927                 break;
1928         case SND_RME_DOMAIN_SPDIF:
1929                 idx = SND_RME_CLK_SPDIF(status1);
1930                 if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
1931                         rate = snd_rme_rate_table[idx];
1932                 break;
1933         default:
1934                 return -EINVAL;
1935         }
1936         ucontrol->value.integer.value[0] = rate;
1937         return 0;
1938 }
1939
1940 static int snd_rme_sync_state_get(struct snd_kcontrol *kcontrol,
1941                                   struct snd_ctl_elem_value *ucontrol)
1942 {
1943         u32 status1;
1944         int idx = SND_RME_CLOCK_NOLOCK;
1945         int err;
1946
1947         err = snd_rme_get_status1(kcontrol, &status1);
1948         if (err < 0)
1949                 return err;
1950         switch (kcontrol->private_value) {
1951         case SND_RME_DOMAIN_AES:  /* AES */
1952                 if (status1 & SND_RME_CLK_AES_SYNC)
1953                         idx = SND_RME_CLOCK_SYNC;
1954                 else if (status1 & SND_RME_CLK_AES_LOCK)
1955                         idx = SND_RME_CLOCK_LOCK;
1956                 break;
1957         case SND_RME_DOMAIN_SPDIF:  /* SPDIF */
1958                 if (status1 & SND_RME_CLK_SPDIF_SYNC)
1959                         idx = SND_RME_CLOCK_SYNC;
1960                 else if (status1 & SND_RME_CLK_SPDIF_LOCK)
1961                         idx = SND_RME_CLOCK_LOCK;
1962                 break;
1963         default:
1964                 return -EINVAL;
1965         }
1966         ucontrol->value.enumerated.item[0] = idx;
1967         return 0;
1968 }
1969
1970 static int snd_rme_spdif_if_get(struct snd_kcontrol *kcontrol,
1971                                 struct snd_ctl_elem_value *ucontrol)
1972 {
1973         u32 status1;
1974         int err;
1975
1976         err = snd_rme_get_status1(kcontrol, &status1);
1977         if (err < 0)
1978                 return err;
1979         ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_IF(status1);
1980         return 0;
1981 }
1982
1983 static int snd_rme_spdif_format_get(struct snd_kcontrol *kcontrol,
1984                                     struct snd_ctl_elem_value *ucontrol)
1985 {
1986         u32 status1;
1987         int err;
1988
1989         err = snd_rme_get_status1(kcontrol, &status1);
1990         if (err < 0)
1991                 return err;
1992         ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_FORMAT(status1);
1993         return 0;
1994 }
1995
1996 static int snd_rme_sync_source_get(struct snd_kcontrol *kcontrol,
1997                                    struct snd_ctl_elem_value *ucontrol)
1998 {
1999         u32 status1;
2000         int err;
2001
2002         err = snd_rme_get_status1(kcontrol, &status1);
2003         if (err < 0)
2004                 return err;
2005         ucontrol->value.enumerated.item[0] = SND_RME_CLK_SYNC(status1);
2006         return 0;
2007 }
2008
2009 static int snd_rme_current_freq_get(struct snd_kcontrol *kcontrol,
2010                                     struct snd_ctl_elem_value *ucontrol)
2011 {
2012         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2013         struct snd_usb_audio *chip = list->mixer->chip;
2014         u32 status1;
2015         const u64 num = 104857600000000ULL;
2016         u32 den;
2017         unsigned int freq;
2018         int err;
2019
2020         err = snd_usb_lock_shutdown(chip);
2021         if (err < 0)
2022                 return err;
2023         err = snd_rme_read_value(chip, SND_RME_GET_STATUS1, &status1);
2024         if (err < 0)
2025                 goto end;
2026         err = snd_rme_read_value(chip, SND_RME_GET_CURRENT_FREQ, &den);
2027         if (err < 0)
2028                 goto end;
2029         freq = (den == 0) ? 0 : div64_u64(num, den);
2030         freq <<= SND_RME_CLK_FREQMUL(status1);
2031         ucontrol->value.integer.value[0] = freq;
2032
2033 end:
2034         snd_usb_unlock_shutdown(chip);
2035         return err;
2036 }
2037
2038 static int snd_rme_rate_info(struct snd_kcontrol *kcontrol,
2039                              struct snd_ctl_elem_info *uinfo)
2040 {
2041         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2042         uinfo->count = 1;
2043         switch (kcontrol->private_value) {
2044         case SND_RME_DOMAIN_SYSTEM:
2045                 uinfo->value.integer.min = 32000;
2046                 uinfo->value.integer.max = 800000;
2047                 break;
2048         case SND_RME_DOMAIN_AES:
2049         case SND_RME_DOMAIN_SPDIF:
2050         default:
2051                 uinfo->value.integer.min = 0;
2052                 uinfo->value.integer.max = 200000;
2053         }
2054         uinfo->value.integer.step = 0;
2055         return 0;
2056 }
2057
2058 static int snd_rme_sync_state_info(struct snd_kcontrol *kcontrol,
2059                                    struct snd_ctl_elem_info *uinfo)
2060 {
2061         static const char *const sync_states[] = {
2062                 "No Lock", "Lock", "Sync"
2063         };
2064
2065         return snd_ctl_enum_info(uinfo, 1,
2066                                  ARRAY_SIZE(sync_states), sync_states);
2067 }
2068
2069 static int snd_rme_spdif_if_info(struct snd_kcontrol *kcontrol,
2070                                  struct snd_ctl_elem_info *uinfo)
2071 {
2072         static const char *const spdif_if[] = {
2073                 "Coaxial", "Optical"
2074         };
2075
2076         return snd_ctl_enum_info(uinfo, 1,
2077                                  ARRAY_SIZE(spdif_if), spdif_if);
2078 }
2079
2080 static int snd_rme_spdif_format_info(struct snd_kcontrol *kcontrol,
2081                                      struct snd_ctl_elem_info *uinfo)
2082 {
2083         static const char *const optical_type[] = {
2084                 "Consumer", "Professional"
2085         };
2086
2087         return snd_ctl_enum_info(uinfo, 1,
2088                                  ARRAY_SIZE(optical_type), optical_type);
2089 }
2090
2091 static int snd_rme_sync_source_info(struct snd_kcontrol *kcontrol,
2092                                     struct snd_ctl_elem_info *uinfo)
2093 {
2094         static const char *const sync_sources[] = {
2095                 "Internal", "AES", "SPDIF", "Internal"
2096         };
2097
2098         return snd_ctl_enum_info(uinfo, 1,
2099                                  ARRAY_SIZE(sync_sources), sync_sources);
2100 }
2101
2102 static struct snd_kcontrol_new snd_rme_controls[] = {
2103         {
2104                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2105                 .name = "AES Rate",
2106                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2107                 .info = snd_rme_rate_info,
2108                 .get = snd_rme_rate_get,
2109                 .private_value = SND_RME_DOMAIN_AES
2110         },
2111         {
2112                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2113                 .name = "AES Sync",
2114                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2115                 .info = snd_rme_sync_state_info,
2116                 .get = snd_rme_sync_state_get,
2117                 .private_value = SND_RME_DOMAIN_AES
2118         },
2119         {
2120                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2121                 .name = "SPDIF Rate",
2122                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2123                 .info = snd_rme_rate_info,
2124                 .get = snd_rme_rate_get,
2125                 .private_value = SND_RME_DOMAIN_SPDIF
2126         },
2127         {
2128                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2129                 .name = "SPDIF Sync",
2130                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2131                 .info = snd_rme_sync_state_info,
2132                 .get = snd_rme_sync_state_get,
2133                 .private_value = SND_RME_DOMAIN_SPDIF
2134         },
2135         {
2136                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2137                 .name = "SPDIF Interface",
2138                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2139                 .info = snd_rme_spdif_if_info,
2140                 .get = snd_rme_spdif_if_get,
2141         },
2142         {
2143                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2144                 .name = "SPDIF Format",
2145                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2146                 .info = snd_rme_spdif_format_info,
2147                 .get = snd_rme_spdif_format_get,
2148         },
2149         {
2150                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2151                 .name = "Sync Source",
2152                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2153                 .info = snd_rme_sync_source_info,
2154                 .get = snd_rme_sync_source_get
2155         },
2156         {
2157                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2158                 .name = "System Rate",
2159                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2160                 .info = snd_rme_rate_info,
2161                 .get = snd_rme_rate_get,
2162                 .private_value = SND_RME_DOMAIN_SYSTEM
2163         },
2164         {
2165                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2166                 .name = "Current Frequency",
2167                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2168                 .info = snd_rme_rate_info,
2169                 .get = snd_rme_current_freq_get
2170         }
2171 };
2172
2173 static int snd_rme_controls_create(struct usb_mixer_interface *mixer)
2174 {
2175         int err, i;
2176
2177         for (i = 0; i < ARRAY_SIZE(snd_rme_controls); ++i) {
2178                 err = add_single_ctl_with_resume(mixer, 0,
2179                                                  NULL,
2180                                                  &snd_rme_controls[i],
2181                                                  NULL);
2182                 if (err < 0)
2183                         return err;
2184         }
2185
2186         return 0;
2187 }
2188
2189 int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
2190 {
2191         int err = 0;
2192
2193         err = snd_usb_soundblaster_remote_init(mixer);
2194         if (err < 0)
2195                 return err;
2196
2197         switch (mixer->chip->usb_id) {
2198         /* Tascam US-16x08 */
2199         case USB_ID(0x0644, 0x8047):
2200                 err = snd_us16x08_controls_create(mixer);
2201                 break;
2202         case USB_ID(0x041e, 0x3020):
2203         case USB_ID(0x041e, 0x3040):
2204         case USB_ID(0x041e, 0x3042):
2205         case USB_ID(0x041e, 0x30df):
2206         case USB_ID(0x041e, 0x3048):
2207                 err = snd_audigy2nx_controls_create(mixer);
2208                 if (err < 0)
2209                         break;
2210                 snd_card_ro_proc_new(mixer->chip->card, "audigy2nx",
2211                                      mixer, snd_audigy2nx_proc_read);
2212                 break;
2213
2214         /* EMU0204 */
2215         case USB_ID(0x041e, 0x3f19):
2216                 err = snd_emu0204_controls_create(mixer);
2217                 break;
2218
2219         case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
2220         case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
2221                 err = snd_c400_create_mixer(mixer);
2222                 break;
2223
2224         case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
2225         case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
2226                 err = snd_ftu_create_mixer(mixer);
2227                 break;
2228
2229         case USB_ID(0x0b05, 0x1739): /* ASUS Xonar U1 */
2230         case USB_ID(0x0b05, 0x1743): /* ASUS Xonar U1 (2) */
2231         case USB_ID(0x0b05, 0x17a0): /* ASUS Xonar U3 */
2232                 err = snd_xonar_u1_controls_create(mixer);
2233                 break;
2234
2235         case USB_ID(0x0d8c, 0x0103): /* Audio Advantage Micro II */
2236                 err = snd_microii_controls_create(mixer);
2237                 break;
2238
2239         case USB_ID(0x0dba, 0x1000): /* Digidesign Mbox 1 */
2240                 err = snd_mbox1_create_sync_switch(mixer);
2241                 break;
2242
2243         case USB_ID(0x17cc, 0x1011): /* Traktor Audio 6 */
2244                 err = snd_nativeinstruments_create_mixer(mixer,
2245                                 snd_nativeinstruments_ta6_mixers,
2246                                 ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
2247                 break;
2248
2249         case USB_ID(0x17cc, 0x1021): /* Traktor Audio 10 */
2250                 err = snd_nativeinstruments_create_mixer(mixer,
2251                                 snd_nativeinstruments_ta10_mixers,
2252                                 ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
2253                 break;
2254
2255         case USB_ID(0x200c, 0x1018): /* Electrix Ebox-44 */
2256                 /* detection is disabled in mixer_maps.c */
2257                 err = snd_create_std_mono_table(mixer, ebox44_table);
2258                 break;
2259
2260         case USB_ID(0x1235, 0x8012): /* Focusrite Scarlett 6i6 */
2261         case USB_ID(0x1235, 0x8002): /* Focusrite Scarlett 8i6 */
2262         case USB_ID(0x1235, 0x8004): /* Focusrite Scarlett 18i6 */
2263         case USB_ID(0x1235, 0x8014): /* Focusrite Scarlett 18i8 */
2264         case USB_ID(0x1235, 0x800c): /* Focusrite Scarlett 18i20 */
2265                 err = snd_scarlett_controls_create(mixer);
2266                 break;
2267
2268         case USB_ID(0x1235, 0x8203): /* Focusrite Scarlett 6i6 2nd Gen */
2269         case USB_ID(0x1235, 0x8204): /* Focusrite Scarlett 18i8 2nd Gen */
2270         case USB_ID(0x1235, 0x8201): /* Focusrite Scarlett 18i20 2nd Gen */
2271                 err = snd_scarlett_gen2_init(mixer);
2272                 break;
2273
2274         case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */
2275                 err = snd_soundblaster_e1_switch_create(mixer);
2276                 break;
2277         case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
2278                 err = dell_dock_mixer_init(mixer);
2279                 break;
2280
2281         case USB_ID(0x2a39, 0x3fd2): /* RME ADI-2 Pro */
2282         case USB_ID(0x2a39, 0x3fd3): /* RME ADI-2 DAC */
2283         case USB_ID(0x2a39, 0x3fd4): /* RME */
2284                 err = snd_rme_controls_create(mixer);
2285                 break;
2286         }
2287
2288         return err;
2289 }
2290
2291 #ifdef CONFIG_PM
2292 void snd_usb_mixer_resume_quirk(struct usb_mixer_interface *mixer)
2293 {
2294         switch (mixer->chip->usb_id) {
2295         case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
2296                 dell_dock_mixer_init(mixer);
2297                 break;
2298         }
2299 }
2300 #endif
2301
2302 void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
2303                                     int unitid)
2304 {
2305         if (!mixer->rc_cfg)
2306                 return;
2307         /* unit ids specific to Extigy/Audigy 2 NX: */
2308         switch (unitid) {
2309         case 0: /* remote control */
2310                 mixer->rc_urb->dev = mixer->chip->dev;
2311                 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
2312                 break;
2313         case 4: /* digital in jack */
2314         case 7: /* line in jacks */
2315         case 19: /* speaker out jacks */
2316         case 20: /* headphones out jack */
2317                 break;
2318         /* live24ext: 4 = line-in jack */
2319         case 3: /* hp-out jack (may actuate Mute) */
2320                 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2321                     mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
2322                         snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
2323                 break;
2324         default:
2325                 usb_audio_dbg(mixer->chip, "memory change in unknown unit %d\n", unitid);
2326                 break;
2327         }
2328 }
2329
2330 static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer,
2331                                          struct usb_mixer_elem_info *cval,
2332                                          struct snd_kcontrol *kctl)
2333 {
2334         /* Approximation using 10 ranges based on output measurement on hw v1.2.
2335          * This seems close to the cubic mapping e.g. alsamixer uses. */
2336         static const DECLARE_TLV_DB_RANGE(scale,
2337                  0,  1, TLV_DB_MINMAX_ITEM(-5300, -4970),
2338                  2,  5, TLV_DB_MINMAX_ITEM(-4710, -4160),
2339                  6,  7, TLV_DB_MINMAX_ITEM(-3884, -3710),
2340                  8, 14, TLV_DB_MINMAX_ITEM(-3443, -2560),
2341                 15, 16, TLV_DB_MINMAX_ITEM(-2475, -2324),
2342                 17, 19, TLV_DB_MINMAX_ITEM(-2228, -2031),
2343                 20, 26, TLV_DB_MINMAX_ITEM(-1910, -1393),
2344                 27, 31, TLV_DB_MINMAX_ITEM(-1322, -1032),
2345                 32, 40, TLV_DB_MINMAX_ITEM(-968, -490),
2346                 41, 50, TLV_DB_MINMAX_ITEM(-441, 0),
2347         );
2348
2349         if (cval->min == 0 && cval->max == 50) {
2350                 usb_audio_info(mixer->chip, "applying DragonFly dB scale quirk (0-50 variant)\n");
2351                 kctl->tlv.p = scale;
2352                 kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
2353                 kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
2354
2355         } else if (cval->min == 0 && cval->max <= 1000) {
2356                 /* Some other clearly broken DragonFly variant.
2357                  * At least a 0..53 variant (hw v1.0) exists.
2358                  */
2359                 usb_audio_info(mixer->chip, "ignoring too narrow dB range on a DragonFly device");
2360                 kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
2361         }
2362 }
2363
2364 void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
2365                                   struct usb_mixer_elem_info *cval, int unitid,
2366                                   struct snd_kcontrol *kctl)
2367 {
2368         switch (mixer->chip->usb_id) {
2369         case USB_ID(0x21b4, 0x0081): /* AudioQuest DragonFly */
2370                 if (unitid == 7 && cval->control == UAC_FU_VOLUME)
2371                         snd_dragonfly_quirk_db_scale(mixer, cval, kctl);
2372                 break;
2373         /* lowest playback value is muted on some devices */
2374         case USB_ID(0x0d8c, 0x000c): /* C-Media */
2375         case USB_ID(0x0d8c, 0x0014): /* C-Media */
2376         case USB_ID(0x19f7, 0x0003): /* RODE NT-USB */
2377                 if (strstr(kctl->id.name, "Playback"))
2378                         cval->min_mute = 1;
2379                 break;
2380         }
2381 }
2382