sound/usb/mixer_quirks.c

   1 /*
   2  *   USB Audio Driver for ALSA
   3  *
   4  *   Quirks and vendor-specific extensions for mixer interfaces
   5  *
   6  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
   7  *
   8  *   Many codes borrowed from audio.c by
   9  *          Alan Cox (alan@lxorguk.ukuu.org.uk)
  10  *          Thomas Sailer (sailer@ife.ee.ethz.ch)
  11  *
  12  *   Audio Advantage Micro II support added by:
  13  *          Przemek Rudy (prudy1@o2.pl)
  14  *
  15  *   This program is free software; you can redistribute it and/or modify
  16  *   it under the terms of the GNU General Public License as published by
  17  *   the Free Software Foundation; either version 2 of the License, or
  18  *   (at your option) any later version.
  19  *
  20  *   This program is distributed in the hope that it will be useful,
  21  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  *   GNU General Public License for more details.
  24  *
  25  *   You should have received a copy of the GNU General Public License
  26  *   along with this program; if not, write to the Free Software
  27  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  28  */
  29
  30 #include <linux/hid.h>
  31 #include <linux/init.h>
  32 #include <linux/math64.h>
  33 #include <linux/slab.h>
  34 #include <linux/usb.h>
  35 #include <linux/usb/audio.h>
  36
  37 #include <sound/asoundef.h>
  38 #include <sound/core.h>
  39 #include <sound/control.h>
  40 #include <sound/hwdep.h>
  41 #include <sound/info.h>
  42 #include <sound/tlv.h>
  43
  44 #include "usbaudio.h"
  45 #include "mixer.h"
  46 #include "mixer_quirks.h"
  47 #include "mixer_scarlett.h"
  48 #include "mixer_us16x08.h"
  49 #include "helper.h"
  50
  51 struct std_mono_table {
  52         unsigned int unitid, control, cmask;
  53         int val_type;
  54         const char *name;
  55         snd_kcontrol_tlv_rw_t *tlv_callback;
  56 };
  57
  58 /* This function allows for the creation of standard UAC controls.
  59  * See the quirks for M-Audio FTUs or Ebox-44.
  60  * If you don't want to set a TLV callback pass NULL.
  61  *
  62  * Since there doesn't seem to be a devices that needs a multichannel
  63  * version, we keep it mono for simplicity.
  64  */
  65 static int snd_create_std_mono_ctl_offset(struct usb_mixer_interface *mixer,
  66                                 unsigned int unitid,
  67                                 unsigned int control,
  68                                 unsigned int cmask,
  69                                 int val_type,
  70                                 unsigned int idx_off,
  71                                 const char *name,
  72                                 snd_kcontrol_tlv_rw_t *tlv_callback)
  73 {
  74         struct usb_mixer_elem_info *cval;
  75         struct snd_kcontrol *kctl;
  76
  77         cval = kzalloc(sizeof(*cval), GFP_KERNEL);
  78         if (!cval)
  79                 return -ENOMEM;
  80
  81         snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid);
  82         cval->val_type = val_type;
  83         cval->channels = 1;
  84         cval->control = control;
  85         cval->cmask = cmask;
  86         cval->idx_off = idx_off;
  87
  88         /* get_min_max() is called only for integer volumes later,
  89          * so provide a short-cut for booleans */
  90         cval->min = 0;
  91         cval->max = 1;
  92         cval->res = 0;
  93         cval->dBmin = 0;
  94         cval->dBmax = 0;
  95
  96         /* Create control */
  97         kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
  98         if (!kctl) {
  99                 kfree(cval);
 100                 return -ENOMEM;
 101         }
 102
 103         /* Set name */
 104         snprintf(kctl->id.name, sizeof(kctl->id.name), name);
 105         kctl->private_free = snd_usb_mixer_elem_free;
 106
 107         /* set TLV */
 108         if (tlv_callback) {
 109                 kctl->tlv.c = tlv_callback;
 110                 kctl->vd[0].access |=
 111                         SNDRV_CTL_ELEM_ACCESS_TLV_READ |
 112                         SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
 113         }
 114         /* Add control to mixer */
 115         return snd_usb_mixer_add_control(&cval->head, kctl);
 116 }
 117
 118 static int snd_create_std_mono_ctl(struct usb_mixer_interface *mixer,
 119                                 unsigned int unitid,
 120                                 unsigned int control,
 121                                 unsigned int cmask,
 122                                 int val_type,
 123                                 const char *name,
 124                                 snd_kcontrol_tlv_rw_t *tlv_callback)
 125 {
 126         return snd_create_std_mono_ctl_offset(mixer, unitid, control, cmask,
 127                 val_type, 0 /* Offset */, name, tlv_callback);
 128 }
 129
 130 /*
 131  * Create a set of standard UAC controls from a table
 132  */
 133 static int snd_create_std_mono_table(struct usb_mixer_interface *mixer,
 134                                 struct std_mono_table *t)
 135 {
 136         int err;
 137
 138         while (t->name != NULL) {
 139                 err = snd_create_std_mono_ctl(mixer, t->unitid, t->control,
 140                                 t->cmask, t->val_type, t->name, t->tlv_callback);
 141                 if (err < 0)
 142                         return err;
 143                 t++;
 144         }
 145
 146         return 0;
 147 }
 148
 149 static int add_single_ctl_with_resume(struct usb_mixer_interface *mixer,
 150                                       int id,
 151                                       usb_mixer_elem_resume_func_t resume,
 152                                       const struct snd_kcontrol_new *knew,
 153                                       struct usb_mixer_elem_list **listp)
 154 {
 155         struct usb_mixer_elem_list *list;
 156         struct snd_kcontrol *kctl;
 157
 158         list = kzalloc(sizeof(*list), GFP_KERNEL);
 159         if (!list)
 160                 return -ENOMEM;
 161         if (listp)
 162                 *listp = list;
 163         list->mixer = mixer;
 164         list->id = id;
 165         list->resume = resume;
 166         kctl = snd_ctl_new1(knew, list);
 167         if (!kctl) {
 168                 kfree(list);
 169                 return -ENOMEM;
 170         }
 171         kctl->private_free = snd_usb_mixer_elem_free;
 172         return snd_usb_mixer_add_control(list, kctl);
 173 }
 174
 175 /*
 176  * Sound Blaster remote control configuration
 177  *
 178  * format of remote control data:
 179  * Extigy:       xx 00
 180  * Audigy 2 NX:  06 80 xx 00 00 00
 181  * Live! 24-bit: 06 80 xx yy 22 83
 182  */
 183 static const struct rc_config {
 184         u32 usb_id;
 185         u8  offset;
 186         u8  length;
 187         u8  packet_length;
 188         u8  min_packet_length; /* minimum accepted length of the URB result */
 189         u8  mute_mixer_id;
 190         u32 mute_code;
 191 } rc_configs[] = {
 192         { USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
 193         { USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
 194         { USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
 195         { USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
 196         { USB_ID(0x041e, 0x30df), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
 197         { USB_ID(0x041e, 0x3237), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 Pro */
 198         { USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
 199 };
 200
 201 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
 202 {
 203         struct usb_mixer_interface *mixer = urb->context;
 204         const struct rc_config *rc = mixer->rc_cfg;
 205         u32 code;
 206
 207         if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
 208                 return;
 209
 210         code = mixer->rc_buffer[rc->offset];
 211         if (rc->length == 2)
 212                 code |= mixer->rc_buffer[rc->offset + 1] << 8;
 213
 214         /* the Mute button actually changes the mixer control */
 215         if (code == rc->mute_code)
 216                 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
 217         mixer->rc_code = code;
 218         wmb();
 219         wake_up(&mixer->rc_waitq);
 220 }
 221
 222 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
 223                                      long count, loff_t *offset)
 224 {
 225         struct usb_mixer_interface *mixer = hw->private_data;
 226         int err;
 227         u32 rc_code;
 228
 229         if (count != 1 && count != 4)
 230                 return -EINVAL;
 231         err = wait_event_interruptible(mixer->rc_waitq,
 232                                        (rc_code = xchg(&mixer->rc_code, 0)) != 0);
 233         if (err == 0) {
 234                 if (count == 1)
 235                         err = put_user(rc_code, buf);
 236                 else
 237                         err = put_user(rc_code, (u32 __user *)buf);
 238         }
 239         return err < 0 ? err : count;
 240 }
 241
 242 static __poll_t snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
 243                                             poll_table *wait)
 244 {
 245         struct usb_mixer_interface *mixer = hw->private_data;
 246
 247         poll_wait(file, &mixer->rc_waitq, wait);
 248         return mixer->rc_code ? EPOLLIN | EPOLLRDNORM : 0;
 249 }
 250
 251 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
 252 {
 253         struct snd_hwdep *hwdep;
 254         int err, len, i;
 255
 256         for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
 257                 if (rc_configs[i].usb_id == mixer->chip->usb_id)
 258                         break;
 259         if (i >= ARRAY_SIZE(rc_configs))
 260                 return 0;
 261         mixer->rc_cfg = &rc_configs[i];
 262
 263         len = mixer->rc_cfg->packet_length;
 264
 265         init_waitqueue_head(&mixer->rc_waitq);
 266         err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
 267         if (err < 0)
 268                 return err;
 269         snprintf(hwdep->name, sizeof(hwdep->name),
 270                  "%s remote control", mixer->chip->card->shortname);
 271         hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
 272         hwdep->private_data = mixer;
 273         hwdep->ops.read = snd_usb_sbrc_hwdep_read;
 274         hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
 275         hwdep->exclusive = 1;
 276
 277         mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
 278         if (!mixer->rc_urb)
 279                 return -ENOMEM;
 280         mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
 281         if (!mixer->rc_setup_packet) {
 282                 usb_free_urb(mixer->rc_urb);
 283                 mixer->rc_urb = NULL;
 284                 return -ENOMEM;
 285         }
 286         mixer->rc_setup_packet->bRequestType =
 287                 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
 288         mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
 289         mixer->rc_setup_packet->wValue = cpu_to_le16(0);
 290         mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
 291         mixer->rc_setup_packet->wLength = cpu_to_le16(len);
 292         usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
 293                              usb_rcvctrlpipe(mixer->chip->dev, 0),
 294                              (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
 295                              snd_usb_soundblaster_remote_complete, mixer);
 296         return 0;
 297 }
 298
 299 #define snd_audigy2nx_led_info          snd_ctl_boolean_mono_info
 300
 301 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 302 {
 303         ucontrol->value.integer.value[0] = kcontrol->private_value >> 8;
 304         return 0;
 305 }
 306
 307 static int snd_audigy2nx_led_update(struct usb_mixer_interface *mixer,
 308                                     int value, int index)
 309 {
 310         struct snd_usb_audio *chip = mixer->chip;
 311         int err;
 312
 313         err = snd_usb_lock_shutdown(chip);
 314         if (err < 0)
 315                 return err;
 316
 317         if (chip->usb_id == USB_ID(0x041e, 0x3042))
 318                 err = snd_usb_ctl_msg(chip->dev,
 319                               usb_sndctrlpipe(chip->dev, 0), 0x24,
 320                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 321                               !value, 0, NULL, 0);
 322         /* USB X-Fi S51 Pro */
 323         if (chip->usb_id == USB_ID(0x041e, 0x30df))
 324                 err = snd_usb_ctl_msg(chip->dev,
 325                               usb_sndctrlpipe(chip->dev, 0), 0x24,
 326                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 327                               !value, 0, NULL, 0);
 328         else
 329                 err = snd_usb_ctl_msg(chip->dev,
 330                               usb_sndctrlpipe(chip->dev, 0), 0x24,
 331                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 332                               value, index + 2, NULL, 0);
 333         snd_usb_unlock_shutdown(chip);
 334         return err;
 335 }
 336
 337 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol,
 338                                  struct snd_ctl_elem_value *ucontrol)
 339 {
 340         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 341         struct usb_mixer_interface *mixer = list->mixer;
 342         int index = kcontrol->private_value & 0xff;
 343         unsigned int value = ucontrol->value.integer.value[0];
 344         int old_value = kcontrol->private_value >> 8;
 345         int err;
 346
 347         if (value > 1)
 348                 return -EINVAL;
 349         if (value == old_value)
 350                 return 0;
 351         kcontrol->private_value = (value << 8) | index;
 352         err = snd_audigy2nx_led_update(mixer, value, index);
 353         return err < 0 ? err : 1;
 354 }
 355
 356 static int snd_audigy2nx_led_resume(struct usb_mixer_elem_list *list)
 357 {
 358         int priv_value = list->kctl->private_value;
 359
 360         return snd_audigy2nx_led_update(list->mixer, priv_value >> 8,
 361                                         priv_value & 0xff);
 362 }
 363
 364 /* name and private_value are set dynamically */
 365 static const struct snd_kcontrol_new snd_audigy2nx_control = {
 366         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 367         .info = snd_audigy2nx_led_info,
 368         .get = snd_audigy2nx_led_get,
 369         .put = snd_audigy2nx_led_put,
 370 };
 371
 372 static const char * const snd_audigy2nx_led_names[] = {
 373         "CMSS LED Switch",
 374         "Power LED Switch",
 375         "Dolby Digital LED Switch",
 376 };
 377
 378 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
 379 {
 380         int i, err;
 381
 382         for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_led_names); ++i) {
 383                 struct snd_kcontrol_new knew;
 384
 385                 /* USB X-Fi S51 doesn't have a CMSS LED */
 386                 if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
 387                         continue;
 388                 /* USB X-Fi S51 Pro doesn't have one either */
 389                 if ((mixer->chip->usb_id == USB_ID(0x041e, 0x30df)) && i == 0)
 390                         continue;
 391                 if (i > 1 && /* Live24ext has 2 LEDs only */
 392                         (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
 393                          mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
 394                          mixer->chip->usb_id == USB_ID(0x041e, 0x30df) ||
 395                          mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
 396                         break;
 397
 398                 knew = snd_audigy2nx_control;
 399                 knew.name = snd_audigy2nx_led_names[i];
 400                 knew.private_value = (1 << 8) | i; /* LED on as default */
 401                 err = add_single_ctl_with_resume(mixer, 0,
 402                                                  snd_audigy2nx_led_resume,
 403                                                  &knew, NULL);
 404                 if (err < 0)
 405                         return err;
 406         }
 407         return 0;
 408 }
 409
 410 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
 411                                     struct snd_info_buffer *buffer)
 412 {
 413         static const struct sb_jack {
 414                 int unitid;
 415                 const char *name;
 416         }  jacks_audigy2nx[] = {
 417                 {4,  "dig in "},
 418                 {7,  "line in"},
 419                 {19, "spk out"},
 420                 {20, "hph out"},
 421                 {-1, NULL}
 422         }, jacks_live24ext[] = {
 423                 {4,  "line in"}, /* &1=Line, &2=Mic*/
 424                 {3,  "hph out"}, /* headphones */
 425                 {0,  "RC     "}, /* last command, 6 bytes see rc_config above */
 426                 {-1, NULL}
 427         };
 428         const struct sb_jack *jacks;
 429         struct usb_mixer_interface *mixer = entry->private_data;
 430         int i, err;
 431         u8 buf[3];
 432
 433         snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
 434         if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
 435                 jacks = jacks_audigy2nx;
 436         else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
 437                  mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
 438                 jacks = jacks_live24ext;
 439         else
 440                 return;
 441
 442         for (i = 0; jacks[i].name; ++i) {
 443                 snd_iprintf(buffer, "%s: ", jacks[i].name);
 444                 err = snd_usb_lock_shutdown(mixer->chip);
 445                 if (err < 0)
 446                         return;
 447                 err = snd_usb_ctl_msg(mixer->chip->dev,
 448                                       usb_rcvctrlpipe(mixer->chip->dev, 0),
 449                                       UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
 450                                       USB_RECIP_INTERFACE, 0,
 451                                       jacks[i].unitid << 8, buf, 3);
 452                 snd_usb_unlock_shutdown(mixer->chip);
 453                 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
 454                         snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
 455                 else
 456                         snd_iprintf(buffer, "?\n");
 457         }
 458 }
 459
 460 /* EMU0204 */
 461 static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol,
 462                                       struct snd_ctl_elem_info *uinfo)
 463 {
 464         static const char * const texts[2] = {"1/2", "3/4"};
 465
 466         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
 467 }
 468
 469 static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
 470                                      struct snd_ctl_elem_value *ucontrol)
 471 {
 472         ucontrol->value.enumerated.item[0] = kcontrol->private_value;
 473         return 0;
 474 }
 475
 476 static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
 477                                         int value)
 478 {
 479         struct snd_usb_audio *chip = mixer->chip;
 480         int err;
 481         unsigned char buf[2];
 482
 483         err = snd_usb_lock_shutdown(chip);
 484         if (err < 0)
 485                 return err;
 486
 487         buf[0] = 0x01;
 488         buf[1] = value ? 0x02 : 0x01;
 489         err = snd_usb_ctl_msg(chip->dev,
 490                       usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
 491                       USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
 492                       0x0400, 0x0e00, buf, 2);
 493         snd_usb_unlock_shutdown(chip);
 494         return err;
 495 }
 496
 497 static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
 498                                      struct snd_ctl_elem_value *ucontrol)
 499 {
 500         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 501         struct usb_mixer_interface *mixer = list->mixer;
 502         unsigned int value = ucontrol->value.enumerated.item[0];
 503         int err;
 504
 505         if (value > 1)
 506                 return -EINVAL;
 507
 508         if (value == kcontrol->private_value)
 509                 return 0;
 510
 511         kcontrol->private_value = value;
 512         err = snd_emu0204_ch_switch_update(mixer, value);
 513         return err < 0 ? err : 1;
 514 }
 515
 516 static int snd_emu0204_ch_switch_resume(struct usb_mixer_elem_list *list)
 517 {
 518         return snd_emu0204_ch_switch_update(list->mixer,
 519                                             list->kctl->private_value);
 520 }
 521
 522 static struct snd_kcontrol_new snd_emu0204_control = {
 523         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 524         .name = "Front Jack Channels",
 525         .info = snd_emu0204_ch_switch_info,
 526         .get = snd_emu0204_ch_switch_get,
 527         .put = snd_emu0204_ch_switch_put,
 528         .private_value = 0,
 529 };
 530
 531 static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
 532 {
 533         return add_single_ctl_with_resume(mixer, 0,
 534                                           snd_emu0204_ch_switch_resume,
 535                                           &snd_emu0204_control, NULL);
 536 }
 537
 538 /* ASUS Xonar U1 / U3 controls */
 539
 540 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
 541                                    struct snd_ctl_elem_value *ucontrol)
 542 {
 543         ucontrol->value.integer.value[0] = !!(kcontrol->private_value & 0x02);
 544         return 0;
 545 }
 546
 547 static int snd_xonar_u1_switch_update(struct usb_mixer_interface *mixer,
 548                                       unsigned char status)
 549 {
 550         struct snd_usb_audio *chip = mixer->chip;
 551         int err;
 552
 553         err = snd_usb_lock_shutdown(chip);
 554         if (err < 0)
 555                 return err;
 556         err = snd_usb_ctl_msg(chip->dev,
 557                               usb_sndctrlpipe(chip->dev, 0), 0x08,
 558                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 559                               50, 0, &status, 1);
 560         snd_usb_unlock_shutdown(chip);
 561         return err;
 562 }
 563
 564 static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
 565                                    struct snd_ctl_elem_value *ucontrol)
 566 {
 567         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 568         u8 old_status, new_status;
 569         int err;
 570
 571         old_status = kcontrol->private_value;
 572         if (ucontrol->value.integer.value[0])
 573                 new_status = old_status | 0x02;
 574         else
 575                 new_status = old_status & ~0x02;
 576         if (new_status == old_status)
 577                 return 0;
 578
 579         kcontrol->private_value = new_status;
 580         err = snd_xonar_u1_switch_update(list->mixer, new_status);
 581         return err < 0 ? err : 1;
 582 }
 583
 584 static int snd_xonar_u1_switch_resume(struct usb_mixer_elem_list *list)
 585 {
 586         return snd_xonar_u1_switch_update(list->mixer,
 587                                           list->kctl->private_value);
 588 }
 589
 590 static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
 591         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 592         .name = "Digital Playback Switch",
 593         .info = snd_ctl_boolean_mono_info,
 594         .get = snd_xonar_u1_switch_get,
 595         .put = snd_xonar_u1_switch_put,
 596         .private_value = 0x05,
 597 };
 598
 599 static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
 600 {
 601         return add_single_ctl_with_resume(mixer, 0,
 602                                           snd_xonar_u1_switch_resume,
 603                                           &snd_xonar_u1_output_switch, NULL);
 604 }
 605
 606 /* Digidesign Mbox 1 clock source switch (internal/spdif) */
 607
 608 static int snd_mbox1_switch_get(struct snd_kcontrol *kctl,
 609                                 struct snd_ctl_elem_value *ucontrol)
 610 {
 611         ucontrol->value.enumerated.item[0] = kctl->private_value;
 612         return 0;
 613 }
 614
 615 static int snd_mbox1_switch_update(struct usb_mixer_interface *mixer, int val)
 616 {
 617         struct snd_usb_audio *chip = mixer->chip;
 618         int err;
 619         unsigned char buff[3];
 620
 621         err = snd_usb_lock_shutdown(chip);
 622         if (err < 0)
 623                 return err;
 624
 625         /* Prepare for magic command to toggle clock source */
 626         err = snd_usb_ctl_msg(chip->dev,
 627                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 628                                 USB_DIR_IN |
 629                                 USB_TYPE_CLASS |
 630                                 USB_RECIP_INTERFACE, 0x00, 0x500, buff, 1);
 631         if (err < 0)
 632                 goto err;
 633         err = snd_usb_ctl_msg(chip->dev,
 634                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 635                                 USB_DIR_IN |
 636                                 USB_TYPE_CLASS |
 637                                 USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
 638         if (err < 0)
 639                 goto err;
 640
 641         /* 2 possibilities:     Internal    -> send sample rate
 642          *                      S/PDIF sync -> send zeroes
 643          * NB: Sample rate locked to 48kHz on purpose to
 644          *     prevent user from resetting the sample rate
 645          *     while S/PDIF sync is enabled and confusing
 646          *     this configuration.
 647          */
 648         if (val == 0) {
 649                 buff[0] = 0x80;
 650                 buff[1] = 0xbb;
 651                 buff[2] = 0x00;
 652         } else {
 653                 buff[0] = buff[1] = buff[2] = 0x00;
 654         }
 655
 656         /* Send the magic command to toggle the clock source */
 657         err = snd_usb_ctl_msg(chip->dev,
 658                                 usb_sndctrlpipe(chip->dev, 0), 0x1,
 659                                 USB_TYPE_CLASS |
 660                                 USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
 661         if (err < 0)
 662                 goto err;
 663         err = snd_usb_ctl_msg(chip->dev,
 664                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 665                                 USB_DIR_IN |
 666                                 USB_TYPE_CLASS |
 667                                 USB_RECIP_ENDPOINT, 0x100, 0x81, buff, 3);
 668         if (err < 0)
 669                 goto err;
 670         err = snd_usb_ctl_msg(chip->dev,
 671                                 usb_rcvctrlpipe(chip->dev, 0), 0x81,
 672                                 USB_DIR_IN |
 673                                 USB_TYPE_CLASS |
 674                                 USB_RECIP_ENDPOINT, 0x100, 0x2, buff, 3);
 675         if (err < 0)
 676                 goto err;
 677
 678 err:
 679         snd_usb_unlock_shutdown(chip);
 680         return err;
 681 }
 682
 683 static int snd_mbox1_switch_put(struct snd_kcontrol *kctl,
 684                                 struct snd_ctl_elem_value *ucontrol)
 685 {
 686         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
 687         struct usb_mixer_interface *mixer = list->mixer;
 688         int err;
 689         bool cur_val, new_val;
 690
 691         cur_val = kctl->private_value;
 692         new_val = ucontrol->value.enumerated.item[0];
 693         if (cur_val == new_val)
 694                 return 0;
 695
 696         kctl->private_value = new_val;
 697         err = snd_mbox1_switch_update(mixer, new_val);
 698         return err < 0 ? err : 1;
 699 }
 700
 701 static int snd_mbox1_switch_info(struct snd_kcontrol *kcontrol,
 702                                  struct snd_ctl_elem_info *uinfo)
 703 {
 704         static const char *const texts[2] = {
 705                 "Internal",
 706                 "S/PDIF"
 707         };
 708
 709         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
 710 }
 711
 712 static int snd_mbox1_switch_resume(struct usb_mixer_elem_list *list)
 713 {
 714         return snd_mbox1_switch_update(list->mixer, list->kctl->private_value);
 715 }
 716
 717 static struct snd_kcontrol_new snd_mbox1_switch = {
 718         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 719         .name = "Clock Source",
 720         .index = 0,
 721         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 722         .info = snd_mbox1_switch_info,
 723         .get = snd_mbox1_switch_get,
 724         .put = snd_mbox1_switch_put,
 725         .private_value = 0
 726 };
 727
 728 static int snd_mbox1_create_sync_switch(struct usb_mixer_interface *mixer)
 729 {
 730         return add_single_ctl_with_resume(mixer, 0,
 731                                           snd_mbox1_switch_resume,
 732                                           &snd_mbox1_switch, NULL);
 733 }
 734
 735 /* Native Instruments device quirks */
 736
 737 #define _MAKE_NI_CONTROL(bRequest,wIndex) ((bRequest) << 16 | (wIndex))
 738
 739 static int snd_ni_control_init_val(struct usb_mixer_interface *mixer,
 740                                    struct snd_kcontrol *kctl)
 741 {
 742         struct usb_device *dev = mixer->chip->dev;
 743         unsigned int pval = kctl->private_value;
 744         u8 value;
 745         int err;
 746
 747         err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
 748                               (pval >> 16) & 0xff,
 749                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 750                               0, pval & 0xffff, &value, 1);
 751         if (err < 0) {
 752                 dev_err(&dev->dev,
 753                         "unable to issue vendor read request (ret = %d)", err);
 754                 return err;
 755         }
 756
 757         kctl->private_value |= (value << 24);
 758         return 0;
 759 }
 760
 761 static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
 762                                              struct snd_ctl_elem_value *ucontrol)
 763 {
 764         ucontrol->value.integer.value[0] = kcontrol->private_value >> 24;
 765         return 0;
 766 }
 767
 768 static int snd_ni_update_cur_val(struct usb_mixer_elem_list *list)
 769 {
 770         struct snd_usb_audio *chip = list->mixer->chip;
 771         unsigned int pval = list->kctl->private_value;
 772         int err;
 773
 774         err = snd_usb_lock_shutdown(chip);
 775         if (err < 0)
 776                 return err;
 777         err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
 778                               (pval >> 16) & 0xff,
 779                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 780                               pval >> 24, pval & 0xffff, NULL, 0, 1000);
 781         snd_usb_unlock_shutdown(chip);
 782         return err;
 783 }
 784
 785 static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
 786                                              struct snd_ctl_elem_value *ucontrol)
 787 {
 788         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
 789         u8 oldval = (kcontrol->private_value >> 24) & 0xff;
 790         u8 newval = ucontrol->value.integer.value[0];
 791         int err;
 792
 793         if (oldval == newval)
 794                 return 0;
 795
 796         kcontrol->private_value &= ~(0xff << 24);
 797         kcontrol->private_value |= (unsigned int)newval << 24;
 798         err = snd_ni_update_cur_val(list);
 799         return err < 0 ? err : 1;
 800 }
 801
 802 static struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
 803         {
 804                 .name = "Direct Thru Channel A",
 805                 .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
 806         },
 807         {
 808                 .name = "Direct Thru Channel B",
 809                 .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
 810         },
 811         {
 812                 .name = "Phono Input Channel A",
 813                 .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
 814         },
 815         {
 816                 .name = "Phono Input Channel B",
 817                 .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
 818         },
 819 };
 820
 821 static struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
 822         {
 823                 .name = "Direct Thru Channel A",
 824                 .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
 825         },
 826         {
 827                 .name = "Direct Thru Channel B",
 828                 .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
 829         },
 830         {
 831                 .name = "Direct Thru Channel C",
 832                 .private_value = _MAKE_NI_CONTROL(0x01, 0x07),
 833         },
 834         {
 835                 .name = "Direct Thru Channel D",
 836                 .private_value = _MAKE_NI_CONTROL(0x01, 0x09),
 837         },
 838         {
 839                 .name = "Phono Input Channel A",
 840                 .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
 841         },
 842         {
 843                 .name = "Phono Input Channel B",
 844                 .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
 845         },
 846         {
 847                 .name = "Phono Input Channel C",
 848                 .private_value = _MAKE_NI_CONTROL(0x02, 0x07),
 849         },
 850         {
 851                 .name = "Phono Input Channel D",
 852                 .private_value = _MAKE_NI_CONTROL(0x02, 0x09),
 853         },
 854 };
 855
 856 static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
 857                                               const struct snd_kcontrol_new *kc,
 858                                               unsigned int count)
 859 {
 860         int i, err = 0;
 861         struct snd_kcontrol_new template = {
 862                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 863                 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 864                 .get = snd_nativeinstruments_control_get,
 865                 .put = snd_nativeinstruments_control_put,
 866                 .info = snd_ctl_boolean_mono_info,
 867         };
 868
 869         for (i = 0; i < count; i++) {
 870                 struct usb_mixer_elem_list *list;
 871
 872                 template.name = kc[i].name;
 873                 template.private_value = kc[i].private_value;
 874
 875                 err = add_single_ctl_with_resume(mixer, 0,
 876                                                  snd_ni_update_cur_val,
 877                                                  &template, &list);
 878                 if (err < 0)
 879                         break;
 880                 snd_ni_control_init_val(mixer, list->kctl);
 881         }
 882
 883         return err;
 884 }
 885
 886 /* M-Audio FastTrack Ultra quirks */
 887 /* FTU Effect switch (also used by C400/C600) */
 888 static int snd_ftu_eff_switch_info(struct snd_kcontrol *kcontrol,
 889                                         struct snd_ctl_elem_info *uinfo)
 890 {
 891         static const char *const texts[8] = {
 892                 "Room 1", "Room 2", "Room 3", "Hall 1",
 893                 "Hall 2", "Plate", "Delay", "Echo"
 894         };
 895
 896         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
 897 }
 898
 899 static int snd_ftu_eff_switch_init(struct usb_mixer_interface *mixer,
 900                                    struct snd_kcontrol *kctl)
 901 {
 902         struct usb_device *dev = mixer->chip->dev;
 903         unsigned int pval = kctl->private_value;
 904         int err;
 905         unsigned char value[2];
 906
 907         value[0] = 0x00;
 908         value[1] = 0x00;
 909
 910         err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
 911                               USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
 912                               pval & 0xff00,
 913                               snd_usb_ctrl_intf(mixer->chip) | ((pval & 0xff) << 8),
 914                               value, 2);
 915         if (err < 0)
 916                 return err;
 917
 918         kctl->private_value |= value[0] << 24;
 919         return 0;
 920 }
 921
 922 static int snd_ftu_eff_switch_get(struct snd_kcontrol *kctl,
 923                                         struct snd_ctl_elem_value *ucontrol)
 924 {
 925         ucontrol->value.enumerated.item[0] = kctl->private_value >> 24;
 926         return 0;
 927 }
 928
 929 static int snd_ftu_eff_switch_update(struct usb_mixer_elem_list *list)
 930 {
 931         struct snd_usb_audio *chip = list->mixer->chip;
 932         unsigned int pval = list->kctl->private_value;
 933         unsigned char value[2];
 934         int err;
 935
 936         value[0] = pval >> 24;
 937         value[1] = 0;
 938
 939         err = snd_usb_lock_shutdown(chip);
 940         if (err < 0)
 941                 return err;
 942         err = snd_usb_ctl_msg(chip->dev,
 943                               usb_sndctrlpipe(chip->dev, 0),
 944                               UAC_SET_CUR,
 945                               USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
 946                               pval & 0xff00,
 947                               snd_usb_ctrl_intf(chip) | ((pval & 0xff) << 8),
 948                               value, 2);
 949         snd_usb_unlock_shutdown(chip);
 950         return err;
 951 }
 952
 953 static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl,
 954                                         struct snd_ctl_elem_value *ucontrol)
 955 {
 956         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kctl);
 957         unsigned int pval = list->kctl->private_value;
 958         int cur_val, err, new_val;
 959
 960         cur_val = pval >> 24;
 961         new_val = ucontrol->value.enumerated.item[0];
 962         if (cur_val == new_val)
 963                 return 0;
 964
 965         kctl->private_value &= ~(0xff << 24);
 966         kctl->private_value |= new_val << 24;
 967         err = snd_ftu_eff_switch_update(list);
 968         return err < 0 ? err : 1;
 969 }
 970
 971 static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
 972         int validx, int bUnitID)
 973 {
 974         static struct snd_kcontrol_new template = {
 975                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 976                 .name = "Effect Program Switch",
 977                 .index = 0,
 978                 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 979                 .info = snd_ftu_eff_switch_info,
 980                 .get = snd_ftu_eff_switch_get,
 981                 .put = snd_ftu_eff_switch_put
 982         };
 983         struct usb_mixer_elem_list *list;
 984         int err;
 985
 986         err = add_single_ctl_with_resume(mixer, bUnitID,
 987                                          snd_ftu_eff_switch_update,
 988                                          &template, &list);
 989         if (err < 0)
 990                 return err;
 991         list->kctl->private_value = (validx << 8) | bUnitID;
 992         snd_ftu_eff_switch_init(mixer, list->kctl);
 993         return 0;
 994 }
 995
 996 /* Create volume controls for FTU devices*/
 997 static int snd_ftu_create_volume_ctls(struct usb_mixer_interface *mixer)
 998 {
 999         char name[64];
1000         unsigned int control, cmask;
1001         int in, out, err;
1002
1003         const unsigned int id = 5;
1004         const int val_type = USB_MIXER_S16;
1005
1006         for (out = 0; out < 8; out++) {
1007                 control = out + 1;
1008                 for (in = 0; in < 8; in++) {
1009                         cmask = 1 << in;
1010                         snprintf(name, sizeof(name),
1011                                 "AIn%d - Out%d Capture Volume",
1012                                 in  + 1, out + 1);
1013                         err = snd_create_std_mono_ctl(mixer, id, control,
1014                                                         cmask, val_type, name,
1015                                                         &snd_usb_mixer_vol_tlv);
1016                         if (err < 0)
1017                                 return err;
1018                 }
1019                 for (in = 8; in < 16; in++) {
1020                         cmask = 1 << in;
1021                         snprintf(name, sizeof(name),
1022                                 "DIn%d - Out%d Playback Volume",
1023                                 in - 7, out + 1);
1024                         err = snd_create_std_mono_ctl(mixer, id, control,
1025                                                         cmask, val_type, name,
1026                                                         &snd_usb_mixer_vol_tlv);
1027                         if (err < 0)
1028                                 return err;
1029                 }
1030         }
1031
1032         return 0;
1033 }
1034
1035 /* This control needs a volume quirk, see mixer.c */
1036 static int snd_ftu_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1037 {
1038         static const char name[] = "Effect Volume";
1039         const unsigned int id = 6;
1040         const int val_type = USB_MIXER_U8;
1041         const unsigned int control = 2;
1042         const unsigned int cmask = 0;
1043
1044         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1045                                         name, snd_usb_mixer_vol_tlv);
1046 }
1047
1048 /* This control needs a volume quirk, see mixer.c */
1049 static int snd_ftu_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1050 {
1051         static const char name[] = "Effect Duration";
1052         const unsigned int id = 6;
1053         const int val_type = USB_MIXER_S16;
1054         const unsigned int control = 3;
1055         const unsigned int cmask = 0;
1056
1057         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1058                                         name, snd_usb_mixer_vol_tlv);
1059 }
1060
1061 /* This control needs a volume quirk, see mixer.c */
1062 static int snd_ftu_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1063 {
1064         static const char name[] = "Effect Feedback Volume";
1065         const unsigned int id = 6;
1066         const int val_type = USB_MIXER_U8;
1067         const unsigned int control = 4;
1068         const unsigned int cmask = 0;
1069
1070         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1071                                         name, NULL);
1072 }
1073
1074 static int snd_ftu_create_effect_return_ctls(struct usb_mixer_interface *mixer)
1075 {
1076         unsigned int cmask;
1077         int err, ch;
1078         char name[48];
1079
1080         const unsigned int id = 7;
1081         const int val_type = USB_MIXER_S16;
1082         const unsigned int control = 7;
1083
1084         for (ch = 0; ch < 4; ++ch) {
1085                 cmask = 1 << ch;
1086                 snprintf(name, sizeof(name),
1087                         "Effect Return %d Volume", ch + 1);
1088                 err = snd_create_std_mono_ctl(mixer, id, control,
1089                                                 cmask, val_type, name,
1090                                                 snd_usb_mixer_vol_tlv);
1091                 if (err < 0)
1092                         return err;
1093         }
1094
1095         return 0;
1096 }
1097
1098 static int snd_ftu_create_effect_send_ctls(struct usb_mixer_interface *mixer)
1099 {
1100         unsigned int  cmask;
1101         int err, ch;
1102         char name[48];
1103
1104         const unsigned int id = 5;
1105         const int val_type = USB_MIXER_S16;
1106         const unsigned int control = 9;
1107
1108         for (ch = 0; ch < 8; ++ch) {
1109                 cmask = 1 << ch;
1110                 snprintf(name, sizeof(name),
1111                         "Effect Send AIn%d Volume", ch + 1);
1112                 err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1113                                                 val_type, name,
1114                                                 snd_usb_mixer_vol_tlv);
1115                 if (err < 0)
1116                         return err;
1117         }
1118         for (ch = 8; ch < 16; ++ch) {
1119                 cmask = 1 << ch;
1120                 snprintf(name, sizeof(name),
1121                         "Effect Send DIn%d Volume", ch - 7);
1122                 err = snd_create_std_mono_ctl(mixer, id, control, cmask,
1123                                                 val_type, name,
1124                                                 snd_usb_mixer_vol_tlv);
1125                 if (err < 0)
1126                         return err;
1127         }
1128         return 0;
1129 }
1130
1131 static int snd_ftu_create_mixer(struct usb_mixer_interface *mixer)
1132 {
1133         int err;
1134
1135         err = snd_ftu_create_volume_ctls(mixer);
1136         if (err < 0)
1137                 return err;
1138
1139         err = snd_ftu_create_effect_switch(mixer, 1, 6);
1140         if (err < 0)
1141                 return err;
1142
1143         err = snd_ftu_create_effect_volume_ctl(mixer);
1144         if (err < 0)
1145                 return err;
1146
1147         err = snd_ftu_create_effect_duration_ctl(mixer);
1148         if (err < 0)
1149                 return err;
1150
1151         err = snd_ftu_create_effect_feedback_ctl(mixer);
1152         if (err < 0)
1153                 return err;
1154
1155         err = snd_ftu_create_effect_return_ctls(mixer);
1156         if (err < 0)
1157                 return err;
1158
1159         err = snd_ftu_create_effect_send_ctls(mixer);
1160         if (err < 0)
1161                 return err;
1162
1163         return 0;
1164 }
1165
1166 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
1167                                unsigned char samplerate_id)
1168 {
1169         struct usb_mixer_interface *mixer;
1170         struct usb_mixer_elem_info *cval;
1171         int unitid = 12; /* SamleRate ExtensionUnit ID */
1172
1173         list_for_each_entry(mixer, &chip->mixer_list, list) {
1174                 cval = mixer_elem_list_to_info(mixer->id_elems[unitid]);
1175                 if (cval) {
1176                         snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
1177                                                     cval->control << 8,
1178                                                     samplerate_id);
1179                         snd_usb_mixer_notify_id(mixer, unitid);
1180                 }
1181                 break;
1182         }
1183 }
1184
1185 /* M-Audio Fast Track C400/C600 */
1186 /* C400/C600 volume controls, this control needs a volume quirk, see mixer.c */
1187 static int snd_c400_create_vol_ctls(struct usb_mixer_interface *mixer)
1188 {
1189         char name[64];
1190         unsigned int cmask, offset;
1191         int out, chan, err;
1192         int num_outs = 0;
1193         int num_ins = 0;
1194
1195         const unsigned int id = 0x40;
1196         const int val_type = USB_MIXER_S16;
1197         const int control = 1;
1198
1199         switch (mixer->chip->usb_id) {
1200         case USB_ID(0x0763, 0x2030):
1201                 num_outs = 6;
1202                 num_ins = 4;
1203                 break;
1204         case USB_ID(0x0763, 0x2031):
1205                 num_outs = 8;
1206                 num_ins = 6;
1207                 break;
1208         }
1209
1210         for (chan = 0; chan < num_outs + num_ins; chan++) {
1211                 for (out = 0; out < num_outs; out++) {
1212                         if (chan < num_outs) {
1213                                 snprintf(name, sizeof(name),
1214                                         "PCM%d-Out%d Playback Volume",
1215                                         chan + 1, out + 1);
1216                         } else {
1217                                 snprintf(name, sizeof(name),
1218                                         "In%d-Out%d Playback Volume",
1219                                         chan - num_outs + 1, out + 1);
1220                         }
1221
1222                         cmask = (out == 0) ? 0 : 1 << (out - 1);
1223                         offset = chan * num_outs;
1224                         err = snd_create_std_mono_ctl_offset(mixer, id, control,
1225                                                 cmask, val_type, offset, name,
1226                                                 &snd_usb_mixer_vol_tlv);
1227                         if (err < 0)
1228                                 return err;
1229                 }
1230         }
1231
1232         return 0;
1233 }
1234
1235 /* This control needs a volume quirk, see mixer.c */
1236 static int snd_c400_create_effect_volume_ctl(struct usb_mixer_interface *mixer)
1237 {
1238         static const char name[] = "Effect Volume";
1239         const unsigned int id = 0x43;
1240         const int val_type = USB_MIXER_U8;
1241         const unsigned int control = 3;
1242         const unsigned int cmask = 0;
1243
1244         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1245                                         name, snd_usb_mixer_vol_tlv);
1246 }
1247
1248 /* This control needs a volume quirk, see mixer.c */
1249 static int snd_c400_create_effect_duration_ctl(struct usb_mixer_interface *mixer)
1250 {
1251         static const char name[] = "Effect Duration";
1252         const unsigned int id = 0x43;
1253         const int val_type = USB_MIXER_S16;
1254         const unsigned int control = 4;
1255         const unsigned int cmask = 0;
1256
1257         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1258                                         name, snd_usb_mixer_vol_tlv);
1259 }
1260
1261 /* This control needs a volume quirk, see mixer.c */
1262 static int snd_c400_create_effect_feedback_ctl(struct usb_mixer_interface *mixer)
1263 {
1264         static const char name[] = "Effect Feedback Volume";
1265         const unsigned int id = 0x43;
1266         const int val_type = USB_MIXER_U8;
1267         const unsigned int control = 5;
1268         const unsigned int cmask = 0;
1269
1270         return snd_create_std_mono_ctl(mixer, id, control, cmask, val_type,
1271                                         name, NULL);
1272 }
1273
1274 static int snd_c400_create_effect_vol_ctls(struct usb_mixer_interface *mixer)
1275 {
1276         char name[64];
1277         unsigned int cmask;
1278         int chan, err;
1279         int num_outs = 0;
1280         int num_ins = 0;
1281
1282         const unsigned int id = 0x42;
1283         const int val_type = USB_MIXER_S16;
1284         const int control = 1;
1285
1286         switch (mixer->chip->usb_id) {
1287         case USB_ID(0x0763, 0x2030):
1288                 num_outs = 6;
1289                 num_ins = 4;
1290                 break;
1291         case USB_ID(0x0763, 0x2031):
1292                 num_outs = 8;
1293                 num_ins = 6;
1294                 break;
1295         }
1296
1297         for (chan = 0; chan < num_outs + num_ins; chan++) {
1298                 if (chan < num_outs) {
1299                         snprintf(name, sizeof(name),
1300                                 "Effect Send DOut%d",
1301                                 chan + 1);
1302                 } else {
1303                         snprintf(name, sizeof(name),
1304                                 "Effect Send AIn%d",
1305                                 chan - num_outs + 1);
1306                 }
1307
1308                 cmask = (chan == 0) ? 0 : 1 << (chan - 1);
1309                 err = snd_create_std_mono_ctl(mixer, id, control,
1310                                                 cmask, val_type, name,
1311                                                 &snd_usb_mixer_vol_tlv);
1312                 if (err < 0)
1313                         return err;
1314         }
1315
1316         return 0;
1317 }
1318
1319 static int snd_c400_create_effect_ret_vol_ctls(struct usb_mixer_interface *mixer)
1320 {
1321         char name[64];
1322         unsigned int cmask;
1323         int chan, err;
1324         int num_outs = 0;
1325         int offset = 0;
1326
1327         const unsigned int id = 0x40;
1328         const int val_type = USB_MIXER_S16;
1329         const int control = 1;
1330
1331         switch (mixer->chip->usb_id) {
1332         case USB_ID(0x0763, 0x2030):
1333                 num_outs = 6;
1334                 offset = 0x3c;
1335                 /* { 0x3c, 0x43, 0x3e, 0x45, 0x40, 0x47 } */
1336                 break;
1337         case USB_ID(0x0763, 0x2031):
1338                 num_outs = 8;
1339                 offset = 0x70;
1340                 /* { 0x70, 0x79, 0x72, 0x7b, 0x74, 0x7d, 0x76, 0x7f } */
1341                 break;
1342         }
1343
1344         for (chan = 0; chan < num_outs; chan++) {
1345                 snprintf(name, sizeof(name),
1346                         "Effect Return %d",
1347                         chan + 1);
1348
1349                 cmask = (chan == 0) ? 0 :
1350                         1 << (chan + (chan % 2) * num_outs - 1);
1351                 err = snd_create_std_mono_ctl_offset(mixer, id, control,
1352                                                 cmask, val_type, offset, name,
1353                                                 &snd_usb_mixer_vol_tlv);
1354                 if (err < 0)
1355                         return err;
1356         }
1357
1358         return 0;
1359 }
1360
1361 static int snd_c400_create_mixer(struct usb_mixer_interface *mixer)
1362 {
1363         int err;
1364
1365         err = snd_c400_create_vol_ctls(mixer);
1366         if (err < 0)
1367                 return err;
1368
1369         err = snd_c400_create_effect_vol_ctls(mixer);
1370         if (err < 0)
1371                 return err;
1372
1373         err = snd_c400_create_effect_ret_vol_ctls(mixer);
1374         if (err < 0)
1375                 return err;
1376
1377         err = snd_ftu_create_effect_switch(mixer, 2, 0x43);
1378         if (err < 0)
1379                 return err;
1380
1381         err = snd_c400_create_effect_volume_ctl(mixer);
1382         if (err < 0)
1383                 return err;
1384
1385         err = snd_c400_create_effect_duration_ctl(mixer);
1386         if (err < 0)
1387                 return err;
1388
1389         err = snd_c400_create_effect_feedback_ctl(mixer);
1390         if (err < 0)
1391                 return err;
1392
1393         return 0;
1394 }
1395
1396 /*
1397  * The mixer units for Ebox-44 are corrupt, and even where they
1398  * are valid they presents mono controls as L and R channels of
1399  * stereo. So we provide a good mixer here.
1400  */
1401 static struct std_mono_table ebox44_table[] = {
1402         {
1403                 .unitid = 4,
1404                 .control = 1,
1405                 .cmask = 0x0,
1406                 .val_type = USB_MIXER_INV_BOOLEAN,
1407                 .name = "Headphone Playback Switch"
1408         },
1409         {
1410                 .unitid = 4,
1411                 .control = 2,
1412                 .cmask = 0x1,
1413                 .val_type = USB_MIXER_S16,
1414                 .name = "Headphone A Mix Playback Volume"
1415         },
1416         {
1417                 .unitid = 4,
1418                 .control = 2,
1419                 .cmask = 0x2,
1420                 .val_type = USB_MIXER_S16,
1421                 .name = "Headphone B Mix Playback Volume"
1422         },
1423
1424         {
1425                 .unitid = 7,
1426                 .control = 1,
1427                 .cmask = 0x0,
1428                 .val_type = USB_MIXER_INV_BOOLEAN,
1429                 .name = "Output Playback Switch"
1430         },
1431         {
1432                 .unitid = 7,
1433                 .control = 2,
1434                 .cmask = 0x1,
1435                 .val_type = USB_MIXER_S16,
1436                 .name = "Output A Playback Volume"
1437         },
1438         {
1439                 .unitid = 7,
1440                 .control = 2,
1441                 .cmask = 0x2,
1442                 .val_type = USB_MIXER_S16,
1443                 .name = "Output B Playback Volume"
1444         },
1445
1446         {
1447                 .unitid = 10,
1448                 .control = 1,
1449                 .cmask = 0x0,
1450                 .val_type = USB_MIXER_INV_BOOLEAN,
1451                 .name = "Input Capture Switch"
1452         },
1453         {
1454                 .unitid = 10,
1455                 .control = 2,
1456                 .cmask = 0x1,
1457                 .val_type = USB_MIXER_S16,
1458                 .name = "Input A Capture Volume"
1459         },
1460         {
1461                 .unitid = 10,
1462                 .control = 2,
1463                 .cmask = 0x2,
1464                 .val_type = USB_MIXER_S16,
1465                 .name = "Input B Capture Volume"
1466         },
1467
1468         {}
1469 };
1470
1471 /* Audio Advantage Micro II findings:
1472  *
1473  * Mapping spdif AES bits to vendor register.bit:
1474  * AES0: [0 0 0 0 2.3 2.2 2.1 2.0] - default 0x00
1475  * AES1: [3.3 3.2.3.1.3.0 2.7 2.6 2.5 2.4] - default: 0x01
1476  * AES2: [0 0 0 0 0 0 0 0]
1477  * AES3: [0 0 0 0 0 0 x 0] - 'x' bit is set basing on standard usb request
1478  *                           (UAC_EP_CS_ATTR_SAMPLE_RATE) for Audio Devices
1479  *
1480  * power on values:
1481  * r2: 0x10
1482  * r3: 0x20 (b7 is zeroed just before playback (except IEC61937) and set
1483  *           just after it to 0xa0, presumably it disables/mutes some analog
1484  *           parts when there is no audio.)
1485  * r9: 0x28
1486  *
1487  * Optical transmitter on/off:
1488  * vendor register.bit: 9.1
1489  * 0 - on (0x28 register value)
1490  * 1 - off (0x2a register value)
1491  *
1492  */
1493 static int snd_microii_spdif_info(struct snd_kcontrol *kcontrol,
1494         struct snd_ctl_elem_info *uinfo)
1495 {
1496         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1497         uinfo->count = 1;
1498         return 0;
1499 }
1500
1501 static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol,
1502         struct snd_ctl_elem_value *ucontrol)
1503 {
1504         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1505         struct snd_usb_audio *chip = list->mixer->chip;
1506         int err;
1507         struct usb_interface *iface;
1508         struct usb_host_interface *alts;
1509         unsigned int ep;
1510         unsigned char data[3];
1511         int rate;
1512
1513         err = snd_usb_lock_shutdown(chip);
1514         if (err < 0)
1515                 return err;
1516
1517         ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff;
1518         ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff;
1519         ucontrol->value.iec958.status[2] = 0x00;
1520
1521         /* use known values for that card: interface#1 altsetting#1 */
1522         iface = usb_ifnum_to_if(chip->dev, 1);
1523         if (!iface || iface->num_altsetting < 2)
1524                 return -EINVAL;
1525         alts = &iface->altsetting[1];
1526         if (get_iface_desc(alts)->bNumEndpoints < 1)
1527                 return -EINVAL;
1528         ep = get_endpoint(alts, 0)->bEndpointAddress;
1529
1530         err = snd_usb_ctl_msg(chip->dev,
1531                         usb_rcvctrlpipe(chip->dev, 0),
1532                         UAC_GET_CUR,
1533                         USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN,
1534                         UAC_EP_CS_ATTR_SAMPLE_RATE << 8,
1535                         ep,
1536                         data,
1537                         sizeof(data));
1538         if (err < 0)
1539                 goto end;
1540
1541         rate = data[0] | (data[1] << 8) | (data[2] << 16);
1542         ucontrol->value.iec958.status[3] = (rate == 48000) ?
1543                         IEC958_AES3_CON_FS_48000 : IEC958_AES3_CON_FS_44100;
1544
1545         err = 0;
1546  end:
1547         snd_usb_unlock_shutdown(chip);
1548         return err;
1549 }
1550
1551 static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list)
1552 {
1553         struct snd_usb_audio *chip = list->mixer->chip;
1554         unsigned int pval = list->kctl->private_value;
1555         u8 reg;
1556         int err;
1557
1558         err = snd_usb_lock_shutdown(chip);
1559         if (err < 0)
1560                 return err;
1561
1562         reg = ((pval >> 4) & 0xf0) | (pval & 0x0f);
1563         err = snd_usb_ctl_msg(chip->dev,
1564                         usb_sndctrlpipe(chip->dev, 0),
1565                         UAC_SET_CUR,
1566                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1567                         reg,
1568                         2,
1569                         NULL,
1570                         0);
1571         if (err < 0)
1572                 goto end;
1573
1574         reg = (pval & IEC958_AES0_NONAUDIO) ? 0xa0 : 0x20;
1575         reg |= (pval >> 12) & 0x0f;
1576         err = snd_usb_ctl_msg(chip->dev,
1577                         usb_sndctrlpipe(chip->dev, 0),
1578                         UAC_SET_CUR,
1579                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1580                         reg,
1581                         3,
1582                         NULL,
1583                         0);
1584         if (err < 0)
1585                 goto end;
1586
1587  end:
1588         snd_usb_unlock_shutdown(chip);
1589         return err;
1590 }
1591
1592 static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol,
1593         struct snd_ctl_elem_value *ucontrol)
1594 {
1595         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1596         unsigned int pval, pval_old;
1597         int err;
1598
1599         pval = pval_old = kcontrol->private_value;
1600         pval &= 0xfffff0f0;
1601         pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8;
1602         pval |= (ucontrol->value.iec958.status[0] & 0x0f);
1603
1604         pval &= 0xffff0fff;
1605         pval |= (ucontrol->value.iec958.status[1] & 0xf0) << 8;
1606
1607         /* The frequency bits in AES3 cannot be set via register access. */
1608
1609         /* Silently ignore any bits from the request that cannot be set. */
1610
1611         if (pval == pval_old)
1612                 return 0;
1613
1614         kcontrol->private_value = pval;
1615         err = snd_microii_spdif_default_update(list);
1616         return err < 0 ? err : 1;
1617 }
1618
1619 static int snd_microii_spdif_mask_get(struct snd_kcontrol *kcontrol,
1620         struct snd_ctl_elem_value *ucontrol)
1621 {
1622         ucontrol->value.iec958.status[0] = 0x0f;
1623         ucontrol->value.iec958.status[1] = 0xff;
1624         ucontrol->value.iec958.status[2] = 0x00;
1625         ucontrol->value.iec958.status[3] = 0x00;
1626
1627         return 0;
1628 }
1629
1630 static int snd_microii_spdif_switch_get(struct snd_kcontrol *kcontrol,
1631         struct snd_ctl_elem_value *ucontrol)
1632 {
1633         ucontrol->value.integer.value[0] = !(kcontrol->private_value & 0x02);
1634
1635         return 0;
1636 }
1637
1638 static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list)
1639 {
1640         struct snd_usb_audio *chip = list->mixer->chip;
1641         u8 reg = list->kctl->private_value;
1642         int err;
1643
1644         err = snd_usb_lock_shutdown(chip);
1645         if (err < 0)
1646                 return err;
1647
1648         err = snd_usb_ctl_msg(chip->dev,
1649                         usb_sndctrlpipe(chip->dev, 0),
1650                         UAC_SET_CUR,
1651                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1652                         reg,
1653                         9,
1654                         NULL,
1655                         0);
1656
1657         snd_usb_unlock_shutdown(chip);
1658         return err;
1659 }
1660
1661 static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol,
1662         struct snd_ctl_elem_value *ucontrol)
1663 {
1664         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1665         u8 reg;
1666         int err;
1667
1668         reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a;
1669         if (reg != list->kctl->private_value)
1670                 return 0;
1671
1672         kcontrol->private_value = reg;
1673         err = snd_microii_spdif_switch_update(list);
1674         return err < 0 ? err : 1;
1675 }
1676
1677 static struct snd_kcontrol_new snd_microii_mixer_spdif[] = {
1678         {
1679                 .iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1680                 .name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
1681                 .info =     snd_microii_spdif_info,
1682                 .get =      snd_microii_spdif_default_get,
1683                 .put =      snd_microii_spdif_default_put,
1684                 .private_value = 0x00000100UL,/* reset value */
1685         },
1686         {
1687                 .access =   SNDRV_CTL_ELEM_ACCESS_READ,
1688                 .iface =    SNDRV_CTL_ELEM_IFACE_PCM,
1689                 .name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
1690                 .info =     snd_microii_spdif_info,
1691                 .get =      snd_microii_spdif_mask_get,
1692         },
1693         {
1694                 .iface =    SNDRV_CTL_ELEM_IFACE_MIXER,
1695                 .name =     SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
1696                 .info =     snd_ctl_boolean_mono_info,
1697                 .get =      snd_microii_spdif_switch_get,
1698                 .put =      snd_microii_spdif_switch_put,
1699                 .private_value = 0x00000028UL,/* reset value */
1700         }
1701 };
1702
1703 static int snd_microii_controls_create(struct usb_mixer_interface *mixer)
1704 {
1705         int err, i;
1706         static usb_mixer_elem_resume_func_t resume_funcs[] = {
1707                 snd_microii_spdif_default_update,
1708                 NULL,
1709                 snd_microii_spdif_switch_update
1710         };
1711
1712         for (i = 0; i < ARRAY_SIZE(snd_microii_mixer_spdif); ++i) {
1713                 err = add_single_ctl_with_resume(mixer, 0,
1714                                                  resume_funcs[i],
1715                                                  &snd_microii_mixer_spdif[i],
1716                                                  NULL);
1717                 if (err < 0)
1718                         return err;
1719         }
1720
1721         return 0;
1722 }
1723
1724 /* Creative Sound Blaster E1 */
1725
1726 static int snd_soundblaster_e1_switch_get(struct snd_kcontrol *kcontrol,
1727                                           struct snd_ctl_elem_value *ucontrol)
1728 {
1729         ucontrol->value.integer.value[0] = kcontrol->private_value;
1730         return 0;
1731 }
1732
1733 static int snd_soundblaster_e1_switch_update(struct usb_mixer_interface *mixer,
1734                                              unsigned char state)
1735 {
1736         struct snd_usb_audio *chip = mixer->chip;
1737         int err;
1738         unsigned char buff[2];
1739
1740         buff[0] = 0x02;
1741         buff[1] = state ? 0x02 : 0x00;
1742
1743         err = snd_usb_lock_shutdown(chip);
1744         if (err < 0)
1745                 return err;
1746         err = snd_usb_ctl_msg(chip->dev,
1747                         usb_sndctrlpipe(chip->dev, 0), HID_REQ_SET_REPORT,
1748                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
1749                         0x0202, 3, buff, 2);
1750         snd_usb_unlock_shutdown(chip);
1751         return err;
1752 }
1753
1754 static int snd_soundblaster_e1_switch_put(struct snd_kcontrol *kcontrol,
1755                                           struct snd_ctl_elem_value *ucontrol)
1756 {
1757         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1758         unsigned char value = !!ucontrol->value.integer.value[0];
1759         int err;
1760
1761         if (kcontrol->private_value == value)
1762                 return 0;
1763         kcontrol->private_value = value;
1764         err = snd_soundblaster_e1_switch_update(list->mixer, value);
1765         return err < 0 ? err : 1;
1766 }
1767
1768 static int snd_soundblaster_e1_switch_resume(struct usb_mixer_elem_list *list)
1769 {
1770         return snd_soundblaster_e1_switch_update(list->mixer,
1771                                                  list->kctl->private_value);
1772 }
1773
1774 static int snd_soundblaster_e1_switch_info(struct snd_kcontrol *kcontrol,
1775                                            struct snd_ctl_elem_info *uinfo)
1776 {
1777         static const char *const texts[2] = {
1778                 "Mic", "Aux"
1779         };
1780
1781         return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts);
1782 }
1783
1784 static struct snd_kcontrol_new snd_soundblaster_e1_input_switch = {
1785         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1786         .name = "Input Source",
1787         .info = snd_soundblaster_e1_switch_info,
1788         .get = snd_soundblaster_e1_switch_get,
1789         .put = snd_soundblaster_e1_switch_put,
1790         .private_value = 0,
1791 };
1792
1793 static int snd_soundblaster_e1_switch_create(struct usb_mixer_interface *mixer)
1794 {
1795         return add_single_ctl_with_resume(mixer, 0,
1796                                           snd_soundblaster_e1_switch_resume,
1797                                           &snd_soundblaster_e1_input_switch,
1798                                           NULL);
1799 }
1800
1801 static void dell_dock_init_vol(struct snd_usb_audio *chip, int ch, int id)
1802 {
1803         u16 buf = 0;
1804
1805         snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
1806                         USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
1807                         ch, snd_usb_ctrl_intf(chip) | (id << 8),
1808                         &buf, 2);
1809 }
1810
1811 static int dell_dock_mixer_init(struct usb_mixer_interface *mixer)
1812 {
1813         /* fix to 0dB playback volumes */
1814         dell_dock_init_vol(mixer->chip, 1, 16);
1815         dell_dock_init_vol(mixer->chip, 2, 16);
1816         dell_dock_init_vol(mixer->chip, 1, 19);
1817         dell_dock_init_vol(mixer->chip, 2, 19);
1818         return 0;
1819 }
1820
1821 /* RME Class Compliant device quirks */
1822
1823 #define SND_RME_GET_STATUS1                     23
1824 #define SND_RME_GET_CURRENT_FREQ                17
1825 #define SND_RME_CLK_SYSTEM_SHIFT                16
1826 #define SND_RME_CLK_SYSTEM_MASK                 0x1f
1827 #define SND_RME_CLK_AES_SHIFT                   8
1828 #define SND_RME_CLK_SPDIF_SHIFT                 12
1829 #define SND_RME_CLK_AES_SPDIF_MASK              0xf
1830 #define SND_RME_CLK_SYNC_SHIFT                  6
1831 #define SND_RME_CLK_SYNC_MASK                   0x3
1832 #define SND_RME_CLK_FREQMUL_SHIFT               18
1833 #define SND_RME_CLK_FREQMUL_MASK                0x7
1834 #define SND_RME_CLK_SYSTEM(x) \
1835         ((x >> SND_RME_CLK_SYSTEM_SHIFT) & SND_RME_CLK_SYSTEM_MASK)
1836 #define SND_RME_CLK_AES(x) \
1837         ((x >> SND_RME_CLK_AES_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
1838 #define SND_RME_CLK_SPDIF(x) \
1839         ((x >> SND_RME_CLK_SPDIF_SHIFT) & SND_RME_CLK_AES_SPDIF_MASK)
1840 #define SND_RME_CLK_SYNC(x) \
1841         ((x >> SND_RME_CLK_SYNC_SHIFT) & SND_RME_CLK_SYNC_MASK)
1842 #define SND_RME_CLK_FREQMUL(x) \
1843         ((x >> SND_RME_CLK_FREQMUL_SHIFT) & SND_RME_CLK_FREQMUL_MASK)
1844 #define SND_RME_CLK_AES_LOCK                    0x1
1845 #define SND_RME_CLK_AES_SYNC                    0x4
1846 #define SND_RME_CLK_SPDIF_LOCK                  0x2
1847 #define SND_RME_CLK_SPDIF_SYNC                  0x8
1848 #define SND_RME_SPDIF_IF_SHIFT                  4
1849 #define SND_RME_SPDIF_FORMAT_SHIFT              5
1850 #define SND_RME_BINARY_MASK                     0x1
1851 #define SND_RME_SPDIF_IF(x) \
1852         ((x >> SND_RME_SPDIF_IF_SHIFT) & SND_RME_BINARY_MASK)
1853 #define SND_RME_SPDIF_FORMAT(x) \
1854         ((x >> SND_RME_SPDIF_FORMAT_SHIFT) & SND_RME_BINARY_MASK)
1855
1856 static const u32 snd_rme_rate_table[] = {
1857         32000, 44100, 48000, 50000,
1858         64000, 88200, 96000, 100000,
1859         128000, 176400, 192000, 200000,
1860         256000, 352800, 384000, 400000,
1861         512000, 705600, 768000, 800000
1862 };
1863 /* maximum number of items for AES and S/PDIF rates for above table */
1864 #define SND_RME_RATE_IDX_AES_SPDIF_NUM          12
1865
1866 enum snd_rme_domain {
1867         SND_RME_DOMAIN_SYSTEM,
1868         SND_RME_DOMAIN_AES,
1869         SND_RME_DOMAIN_SPDIF
1870 };
1871
1872 enum snd_rme_clock_status {
1873         SND_RME_CLOCK_NOLOCK,
1874         SND_RME_CLOCK_LOCK,
1875         SND_RME_CLOCK_SYNC
1876 };
1877
1878 static int snd_rme_read_value(struct snd_usb_audio *chip,
1879                               unsigned int item,
1880                               u32 *value)
1881 {
1882         struct usb_device *dev = chip->dev;
1883         int err;
1884
1885         err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
1886                               item,
1887                               USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1888                               0, 0,
1889                               value, sizeof(*value));
1890         if (err < 0)
1891                 dev_err(&dev->dev,
1892                         "unable to issue vendor read request %d (ret = %d)",
1893                         item, err);
1894         return err;
1895 }
1896
1897 static int snd_rme_get_status1(struct snd_kcontrol *kcontrol,
1898                                u32 *status1)
1899 {
1900         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
1901         struct snd_usb_audio *chip = list->mixer->chip;
1902         int err;
1903
1904         err = snd_usb_lock_shutdown(chip);
1905         if (err < 0)
1906                 return err;
1907         err = snd_rme_read_value(chip, SND_RME_GET_STATUS1, status1);
1908         snd_usb_unlock_shutdown(chip);
1909         return err;
1910 }
1911
1912 static int snd_rme_rate_get(struct snd_kcontrol *kcontrol,
1913                             struct snd_ctl_elem_value *ucontrol)
1914 {
1915         u32 status1;
1916         u32 rate = 0;
1917         int idx;
1918         int err;
1919
1920         err = snd_rme_get_status1(kcontrol, &status1);
1921         if (err < 0)
1922                 return err;
1923         switch (kcontrol->private_value) {
1924         case SND_RME_DOMAIN_SYSTEM:
1925                 idx = SND_RME_CLK_SYSTEM(status1);
1926                 if (idx < ARRAY_SIZE(snd_rme_rate_table))
1927                         rate = snd_rme_rate_table[idx];
1928                 break;
1929         case SND_RME_DOMAIN_AES:
1930                 idx = SND_RME_CLK_AES(status1);
1931                 if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
1932                         rate = snd_rme_rate_table[idx];
1933                 break;
1934         case SND_RME_DOMAIN_SPDIF:
1935                 idx = SND_RME_CLK_SPDIF(status1);
1936                 if (idx < SND_RME_RATE_IDX_AES_SPDIF_NUM)
1937                         rate = snd_rme_rate_table[idx];
1938                 break;
1939         default:
1940                 return -EINVAL;
1941         }
1942         ucontrol->value.integer.value[0] = rate;
1943         return 0;
1944 }
1945
1946 static int snd_rme_sync_state_get(struct snd_kcontrol *kcontrol,
1947                                   struct snd_ctl_elem_value *ucontrol)
1948 {
1949         u32 status1;
1950         int idx = SND_RME_CLOCK_NOLOCK;
1951         int err;
1952
1953         err = snd_rme_get_status1(kcontrol, &status1);
1954         if (err < 0)
1955                 return err;
1956         switch (kcontrol->private_value) {
1957         case SND_RME_DOMAIN_AES:  /* AES */
1958                 if (status1 & SND_RME_CLK_AES_SYNC)
1959                         idx = SND_RME_CLOCK_SYNC;
1960                 else if (status1 & SND_RME_CLK_AES_LOCK)
1961                         idx = SND_RME_CLOCK_LOCK;
1962                 break;
1963         case SND_RME_DOMAIN_SPDIF:  /* SPDIF */
1964                 if (status1 & SND_RME_CLK_SPDIF_SYNC)
1965                         idx = SND_RME_CLOCK_SYNC;
1966                 else if (status1 & SND_RME_CLK_SPDIF_LOCK)
1967                         idx = SND_RME_CLOCK_LOCK;
1968                 break;
1969         default:
1970                 return -EINVAL;
1971         }
1972         ucontrol->value.enumerated.item[0] = idx;
1973         return 0;
1974 }
1975
1976 static int snd_rme_spdif_if_get(struct snd_kcontrol *kcontrol,
1977                                 struct snd_ctl_elem_value *ucontrol)
1978 {
1979         u32 status1;
1980         int err;
1981
1982         err = snd_rme_get_status1(kcontrol, &status1);
1983         if (err < 0)
1984                 return err;
1985         ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_IF(status1);
1986         return 0;
1987 }
1988
1989 static int snd_rme_spdif_format_get(struct snd_kcontrol *kcontrol,
1990                                     struct snd_ctl_elem_value *ucontrol)
1991 {
1992         u32 status1;
1993         int err;
1994
1995         err = snd_rme_get_status1(kcontrol, &status1);
1996         if (err < 0)
1997                 return err;
1998         ucontrol->value.enumerated.item[0] = SND_RME_SPDIF_FORMAT(status1);
1999         return 0;
2000 }
2001
2002 static int snd_rme_sync_source_get(struct snd_kcontrol *kcontrol,
2003                                    struct snd_ctl_elem_value *ucontrol)
2004 {
2005         u32 status1;
2006         int err;
2007
2008         err = snd_rme_get_status1(kcontrol, &status1);
2009         if (err < 0)
2010                 return err;
2011         ucontrol->value.enumerated.item[0] = SND_RME_CLK_SYNC(status1);
2012         return 0;
2013 }
2014
2015 static int snd_rme_current_freq_get(struct snd_kcontrol *kcontrol,
2016                                     struct snd_ctl_elem_value *ucontrol)
2017 {
2018         struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
2019         struct snd_usb_audio *chip = list->mixer->chip;
2020         u32 status1;
2021         const u64 num = 104857600000000ULL;
2022         u32 den;
2023         unsigned int freq;
2024         int err;
2025
2026         err = snd_usb_lock_shutdown(chip);
2027         if (err < 0)
2028                 return err;
2029         err = snd_rme_read_value(chip, SND_RME_GET_STATUS1, &status1);
2030         if (err < 0)
2031                 goto end;
2032         err = snd_rme_read_value(chip, SND_RME_GET_CURRENT_FREQ, &den);
2033         if (err < 0)
2034                 goto end;
2035         freq = (den == 0) ? 0 : div64_u64(num, den);
2036         freq <<= SND_RME_CLK_FREQMUL(status1);
2037         ucontrol->value.integer.value[0] = freq;
2038
2039 end:
2040         snd_usb_unlock_shutdown(chip);
2041         return err;
2042 }
2043
2044 static int snd_rme_rate_info(struct snd_kcontrol *kcontrol,
2045                              struct snd_ctl_elem_info *uinfo)
2046 {
2047         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2048         uinfo->count = 1;
2049         switch (kcontrol->private_value) {
2050         case SND_RME_DOMAIN_SYSTEM:
2051                 uinfo->value.integer.min = 32000;
2052                 uinfo->value.integer.max = 800000;
2053                 break;
2054         case SND_RME_DOMAIN_AES:
2055         case SND_RME_DOMAIN_SPDIF:
2056         default:
2057                 uinfo->value.integer.min = 0;
2058                 uinfo->value.integer.max = 200000;
2059         }
2060         uinfo->value.integer.step = 0;
2061         return 0;
2062 }
2063
2064 static int snd_rme_sync_state_info(struct snd_kcontrol *kcontrol,
2065                                    struct snd_ctl_elem_info *uinfo)
2066 {
2067         static const char *const sync_states[] = {
2068                 "No Lock", "Lock", "Sync"
2069         };
2070
2071         return snd_ctl_enum_info(uinfo, 1,
2072                                  ARRAY_SIZE(sync_states), sync_states);
2073 }
2074
2075 static int snd_rme_spdif_if_info(struct snd_kcontrol *kcontrol,
2076                                  struct snd_ctl_elem_info *uinfo)
2077 {
2078         static const char *const spdif_if[] = {
2079                 "Coaxial", "Optical"
2080         };
2081
2082         return snd_ctl_enum_info(uinfo, 1,
2083                                  ARRAY_SIZE(spdif_if), spdif_if);
2084 }
2085
2086 static int snd_rme_spdif_format_info(struct snd_kcontrol *kcontrol,
2087                                      struct snd_ctl_elem_info *uinfo)
2088 {
2089         static const char *const optical_type[] = {
2090                 "Consumer", "Professional"
2091         };
2092
2093         return snd_ctl_enum_info(uinfo, 1,
2094                                  ARRAY_SIZE(optical_type), optical_type);
2095 }
2096
2097 static int snd_rme_sync_source_info(struct snd_kcontrol *kcontrol,
2098                                     struct snd_ctl_elem_info *uinfo)
2099 {
2100         static const char *const sync_sources[] = {
2101                 "Internal", "AES", "SPDIF", "Internal"
2102         };
2103
2104         return snd_ctl_enum_info(uinfo, 1,
2105                                  ARRAY_SIZE(sync_sources), sync_sources);
2106 }
2107
2108 static struct snd_kcontrol_new snd_rme_controls[] = {
2109         {
2110                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2111                 .name = "AES Rate",
2112                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2113                 .info = snd_rme_rate_info,
2114                 .get = snd_rme_rate_get,
2115                 .private_value = SND_RME_DOMAIN_AES
2116         },
2117         {
2118                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2119                 .name = "AES Sync",
2120                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2121                 .info = snd_rme_sync_state_info,
2122                 .get = snd_rme_sync_state_get,
2123                 .private_value = SND_RME_DOMAIN_AES
2124         },
2125         {
2126                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2127                 .name = "SPDIF Rate",
2128                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2129                 .info = snd_rme_rate_info,
2130                 .get = snd_rme_rate_get,
2131                 .private_value = SND_RME_DOMAIN_SPDIF
2132         },
2133         {
2134                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2135                 .name = "SPDIF Sync",
2136                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2137                 .info = snd_rme_sync_state_info,
2138                 .get = snd_rme_sync_state_get,
2139                 .private_value = SND_RME_DOMAIN_SPDIF
2140         },
2141         {
2142                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2143                 .name = "SPDIF Interface",
2144                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2145                 .info = snd_rme_spdif_if_info,
2146                 .get = snd_rme_spdif_if_get,
2147         },
2148         {
2149                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2150                 .name = "SPDIF Format",
2151                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2152                 .info = snd_rme_spdif_format_info,
2153                 .get = snd_rme_spdif_format_get,
2154         },
2155         {
2156                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2157                 .name = "Sync Source",
2158                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2159                 .info = snd_rme_sync_source_info,
2160                 .get = snd_rme_sync_source_get
2161         },
2162         {
2163                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2164                 .name = "System Rate",
2165                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2166                 .info = snd_rme_rate_info,
2167                 .get = snd_rme_rate_get,
2168                 .private_value = SND_RME_DOMAIN_SYSTEM
2169         },
2170         {
2171                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2172                 .name = "Current Frequency",
2173                 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
2174                 .info = snd_rme_rate_info,
2175                 .get = snd_rme_current_freq_get
2176         }
2177 };
2178
2179 static int snd_rme_controls_create(struct usb_mixer_interface *mixer)
2180 {
2181         int err, i;
2182
2183         for (i = 0; i < ARRAY_SIZE(snd_rme_controls); ++i) {
2184                 err = add_single_ctl_with_resume(mixer, 0,
2185                                                  NULL,
2186                                                  &snd_rme_controls[i],
2187                                                  NULL);
2188                 if (err < 0)
2189                         return err;
2190         }
2191
2192         return 0;
2193 }
2194
2195 int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
2196 {
2197         int err = 0;
2198
2199         err = snd_usb_soundblaster_remote_init(mixer);
2200         if (err < 0)
2201                 return err;
2202
2203         switch (mixer->chip->usb_id) {
2204         /* Tascam US-16x08 */
2205         case USB_ID(0x0644, 0x8047):
2206                 err = snd_us16x08_controls_create(mixer);
2207                 break;
2208         case USB_ID(0x041e, 0x3020):
2209         case USB_ID(0x041e, 0x3040):
2210         case USB_ID(0x041e, 0x3042):
2211         case USB_ID(0x041e, 0x30df):
2212         case USB_ID(0x041e, 0x3048):
2213                 err = snd_audigy2nx_controls_create(mixer);
2214                 if (err < 0)
2215                         break;
2216                 snd_card_ro_proc_new(mixer->chip->card, "audigy2nx",
2217                                      mixer, snd_audigy2nx_proc_read);
2218                 break;
2219
2220         /* EMU0204 */
2221         case USB_ID(0x041e, 0x3f19):
2222                 err = snd_emu0204_controls_create(mixer);
2223                 break;
2224
2225         case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
2226         case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
2227                 err = snd_c400_create_mixer(mixer);
2228                 break;
2229
2230         case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
2231         case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
2232                 err = snd_ftu_create_mixer(mixer);
2233                 break;
2234
2235         case USB_ID(0x0b05, 0x1739): /* ASUS Xonar U1 */
2236         case USB_ID(0x0b05, 0x1743): /* ASUS Xonar U1 (2) */
2237         case USB_ID(0x0b05, 0x17a0): /* ASUS Xonar U3 */
2238                 err = snd_xonar_u1_controls_create(mixer);
2239                 break;
2240
2241         case USB_ID(0x0d8c, 0x0103): /* Audio Advantage Micro II */
2242                 err = snd_microii_controls_create(mixer);
2243                 break;
2244
2245         case USB_ID(0x0dba, 0x1000): /* Digidesign Mbox 1 */
2246                 err = snd_mbox1_create_sync_switch(mixer);
2247                 break;
2248
2249         case USB_ID(0x17cc, 0x1011): /* Traktor Audio 6 */
2250                 err = snd_nativeinstruments_create_mixer(mixer,
2251                                 snd_nativeinstruments_ta6_mixers,
2252                                 ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
2253                 break;
2254
2255         case USB_ID(0x17cc, 0x1021): /* Traktor Audio 10 */
2256                 err = snd_nativeinstruments_create_mixer(mixer,
2257                                 snd_nativeinstruments_ta10_mixers,
2258                                 ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
2259                 break;
2260
2261         case USB_ID(0x200c, 0x1018): /* Electrix Ebox-44 */
2262                 /* detection is disabled in mixer_maps.c */
2263                 err = snd_create_std_mono_table(mixer, ebox44_table);
2264                 break;
2265
2266         case USB_ID(0x1235, 0x8012): /* Focusrite Scarlett 6i6 */
2267         case USB_ID(0x1235, 0x8002): /* Focusrite Scarlett 8i6 */
2268         case USB_ID(0x1235, 0x8004): /* Focusrite Scarlett 18i6 */
2269         case USB_ID(0x1235, 0x8014): /* Focusrite Scarlett 18i8 */
2270         case USB_ID(0x1235, 0x800c): /* Focusrite Scarlett 18i20 */
2271                 err = snd_scarlett_controls_create(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 C-Media devices */
2374         case USB_ID(0x0d8c, 0x000c):
2375         case USB_ID(0x0d8c, 0x0014):
2376                 if (strstr(kctl->id.name, "Playback"))
2377                         cval->min_mute = 1;
2378                 break;
2379         }
2380 }
2381