sound/usb/mixer_us16x08.c

   1 /*
   2  *   Tascam US-16x08 ALSA driver
   3  *
   4  *   Copyright (c) 2016 by Detlef Urban (onkel@paraair.de)
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  */
  17
  18 #include <linux/slab.h>
  19 #include <linux/usb.h>
  20 #include <linux/usb/audio-v2.h>
  21
  22 #include <sound/core.h>
  23 #include <sound/control.h>
  24
  25 #include "usbaudio.h"
  26 #include "mixer.h"
  27 #include "helper.h"
  28
  29 #include "mixer_us16x08.h"
  30
  31 /* USB control message templates */
  32 static const char route_msg[] = {
  33         0x61,
  34         0x02,
  35         0x03, /* input from master (0x02) or input from computer bus (0x03) */
  36         0x62,
  37         0x02,
  38         0x01, /* input index (0x01/0x02 eq. left/right) or bus (0x01-0x08) */
  39         0x41,
  40         0x01,
  41         0x61,
  42         0x02,
  43         0x01,
  44         0x62,
  45         0x02,
  46         0x01, /* output index (0x01-0x08) */
  47         0x42,
  48         0x01,
  49         0x43,
  50         0x01,
  51         0x00,
  52         0x00
  53 };
  54
  55 static const char mix_init_msg1[] = {
  56         0x71, 0x01, 0x00, 0x00
  57 };
  58
  59 static const char mix_init_msg2[] = {
  60         0x62, 0x02, 0x00, 0x61, 0x02, 0x04, 0xb1, 0x01, 0x00, 0x00
  61 };
  62
  63 static const char mix_msg_in[] = {
  64         /* default message head, equal to all mixers */
  65         0x61, 0x02, 0x04, 0x62, 0x02, 0x01,
  66         0x81, /* 0x06: Controller ID */
  67         0x02, /* 0x07:  */
  68         0x00, /* 0x08: Value of common mixer */
  69         0x00,
  70         0x00
  71 };
  72
  73 static const char mix_msg_out[] = {
  74         /* default message head, equal to all mixers */
  75         0x61, 0x02, 0x02, 0x62, 0x02, 0x01,
  76         0x81, /* 0x06: Controller ID */
  77         0x02, /*                    0x07:  */
  78         0x00, /*                    0x08: Value of common mixer */
  79         0x00,
  80         0x00
  81 };
  82
  83 static const char bypass_msg_out[] = {
  84         0x45,
  85         0x02,
  86         0x01, /* on/off flag */
  87         0x00,
  88         0x00
  89 };
  90
  91 static const char bus_msg_out[] = {
  92         0x44,
  93         0x02,
  94         0x01, /* on/off flag */
  95         0x00,
  96         0x00
  97 };
  98
  99 static const char comp_msg[] = {
 100         /* default message head, equal to all mixers */
 101         0x61, 0x02, 0x04, 0x62, 0x02, 0x01,
 102         0x91,
 103         0x02,
 104         0xf0, /* 0x08: Threshold db (8) (e0 ... 00) (+-0dB -- -32dB) x-32 */
 105         0x92,
 106         0x02,
 107         0x0a, /* 0x0b: Ratio (0a,0b,0d,0f,11,14,19,1e,23,28,32,3c,50,a0,ff)  */
 108         0x93,
 109         0x02,
 110         0x02, /* 0x0e: Attack (0x02 ... 0xc0) (2ms ... 200ms) */
 111         0x94,
 112         0x02,
 113         0x01, /* 0x11: Release (0x01 ... 0x64) (10ms ... 1000ms) x*10  */
 114         0x95,
 115         0x02,
 116         0x03, /* 0x14: gain (0 ... 20) (0dB .. 20dB) */
 117         0x96,
 118         0x02,
 119         0x01,
 120         0x97,
 121         0x02,
 122         0x01, /* 0x1a: main Comp switch (0 ... 1) (off ... on)) */
 123         0x00,
 124         0x00
 125 };
 126
 127 static const char eqs_msq[] = {
 128         /* default message head, equal to all mixers */
 129         0x61, 0x02, 0x04, 0x62, 0x02, 0x01,
 130         0x51, /*                0x06: Controller ID  */
 131         0x02,
 132         0x04, /* 0x08: EQ set num (0x01..0x04) (LOW, LOWMID, HIGHMID, HIGH)) */
 133         0x52,
 134         0x02,
 135         0x0c, /* 0x0b: value dB (0 ... 12) (-12db .. +12db)  x-6 */
 136         0x53,
 137         0x02,
 138         0x0f, /* 0x0e: value freq (32-47) (1.7kHz..18kHz) */
 139         0x54,
 140         0x02,
 141         0x02, /* 0x11: band width (0-6) (Q16-Q0.25)  2^x/4 (EQ xxMID only) */
 142         0x55,
 143         0x02,
 144         0x01, /* 0x14: main EQ switch (0 ... 1) (off ... on)) */
 145         0x00,
 146         0x00
 147 };
 148
 149 /* compressor ratio map */
 150 static const char ratio_map[] = {
 151         0x0a, 0x0b, 0x0d, 0x0f, 0x11, 0x14, 0x19, 0x1e,
 152         0x23, 0x28, 0x32, 0x3c, 0x50, 0xa0, 0xff
 153 };
 154
 155 /* route enumeration names */
 156 static const char *const route_names[] = {
 157         "Master Left", "Master Right", "Output 1", "Output 2", "Output 3",
 158         "Output 4", "Output 5", "Output 6", "Output 7", "Output 8",
 159 };
 160
 161 static int snd_us16x08_recv_urb(struct snd_usb_audio *chip,
 162         unsigned char *buf, int size)
 163 {
 164
 165         mutex_lock(&chip->mutex);
 166         snd_usb_ctl_msg(chip->dev,
 167                 usb_rcvctrlpipe(chip->dev, 0),
 168                 SND_US16X08_URB_METER_REQUEST,
 169                 SND_US16X08_URB_METER_REQUESTTYPE, 0, 0, buf, size);
 170         mutex_unlock(&chip->mutex);
 171         return 0;
 172 }
 173
 174 /* wrapper function to send prepared URB buffer to usb device. Return an error
 175  * code if something went wrong
 176  */
 177 static int snd_us16x08_send_urb(struct snd_usb_audio *chip, char *buf, int size)
 178 {
 179         return snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
 180                         SND_US16X08_URB_REQUEST, SND_US16X08_URB_REQUESTTYPE,
 181                         0, 0, buf, size);
 182 }
 183
 184 static int snd_us16x08_route_info(struct snd_kcontrol *kcontrol,
 185         struct snd_ctl_elem_info *uinfo)
 186 {
 187         return snd_ctl_enum_info(uinfo, 1, 10, route_names);
 188 }
 189
 190 static int snd_us16x08_route_get(struct snd_kcontrol *kcontrol,
 191         struct snd_ctl_elem_value *ucontrol)
 192 {
 193         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 194         int index = ucontrol->id.index;
 195
 196         /* route has no bias */
 197         ucontrol->value.enumerated.item[0] = elem->cache_val[index];
 198
 199         return 0;
 200 }
 201
 202 static int snd_us16x08_route_put(struct snd_kcontrol *kcontrol,
 203         struct snd_ctl_elem_value *ucontrol)
 204 {
 205         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 206         struct snd_usb_audio *chip = elem->head.mixer->chip;
 207         int index = ucontrol->id.index;
 208         char buf[sizeof(route_msg)];
 209         int val, val_org, err;
 210
 211         /*  get the new value (no bias for routes) */
 212         val = ucontrol->value.enumerated.item[0];
 213
 214         /* sanity check */
 215         if (val < 0 || val > 9)
 216                 return -EINVAL;
 217
 218         /* prepare the message buffer from template */
 219         memcpy(buf, route_msg, sizeof(route_msg));
 220
 221         if (val < 2) {
 222                 /* input comes from a master channel */
 223                 val_org = val;
 224                 buf[2] = 0x02;
 225         } else {
 226                 /* input comes from a computer channel */
 227                 buf[2] = 0x03;
 228                 val_org = val - 2;
 229         }
 230
 231         /* place new route selection in URB message */
 232         buf[5] = (unsigned char) (val_org & 0x0f) + 1;
 233         /* place route selector in URB message */
 234         buf[13] = index + 1;
 235
 236         err = snd_us16x08_send_urb(chip, buf, sizeof(route_msg));
 237
 238         if (err > 0) {
 239                 elem->cached |= 1 << index;
 240                 elem->cache_val[index] = val;
 241         } else {
 242                 usb_audio_dbg(chip, "Failed to set routing, err:%d\n", err);
 243         }
 244
 245         return err > 0 ? 1 : 0;
 246 }
 247
 248 static int snd_us16x08_master_info(struct snd_kcontrol *kcontrol,
 249         struct snd_ctl_elem_info *uinfo)
 250 {
 251         uinfo->count = 1;
 252         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 253         uinfo->value.integer.max = SND_US16X08_KCMAX(kcontrol);
 254         uinfo->value.integer.min = SND_US16X08_KCMIN(kcontrol);
 255         uinfo->value.integer.step = SND_US16X08_KCSTEP(kcontrol);
 256         return 0;
 257 }
 258
 259 static int snd_us16x08_master_get(struct snd_kcontrol *kcontrol,
 260         struct snd_ctl_elem_value *ucontrol)
 261 {
 262         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 263         int index = ucontrol->id.index;
 264
 265         ucontrol->value.integer.value[0] = elem->cache_val[index];
 266
 267         return 0;
 268 }
 269
 270 static int snd_us16x08_master_put(struct snd_kcontrol *kcontrol,
 271         struct snd_ctl_elem_value *ucontrol)
 272 {
 273         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 274         struct snd_usb_audio *chip = elem->head.mixer->chip;
 275         char buf[sizeof(mix_msg_out)];
 276         int val, err;
 277         int index = ucontrol->id.index;
 278
 279         /* new control value incl. bias*/
 280         val = ucontrol->value.integer.value[0];
 281
 282         /* sanity check */
 283         if (val < SND_US16X08_KCMIN(kcontrol)
 284                 || val > SND_US16X08_KCMAX(kcontrol))
 285                 return -EINVAL;
 286
 287         /* prepare the message buffer from template */
 288         memcpy(buf, mix_msg_out, sizeof(mix_msg_out));
 289
 290         buf[8] = val - SND_US16X08_KCBIAS(kcontrol);
 291         buf[6] = elem->head.id;
 292
 293         /* place channel selector in URB message */
 294         buf[5] = index + 1;
 295         err = snd_us16x08_send_urb(chip, buf, sizeof(mix_msg_out));
 296
 297         if (err > 0) {
 298                 elem->cached |= 1 << index;
 299                 elem->cache_val[index] = val;
 300         } else {
 301                 usb_audio_dbg(chip, "Failed to set master, err:%d\n", err);
 302         }
 303
 304         return err > 0 ? 1 : 0;
 305 }
 306
 307 static int snd_us16x08_bus_put(struct snd_kcontrol *kcontrol,
 308         struct snd_ctl_elem_value *ucontrol)
 309 {
 310         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 311         struct snd_usb_audio *chip = elem->head.mixer->chip;
 312         char buf[sizeof(mix_msg_out)];
 313         int val, err = 0;
 314
 315         val = ucontrol->value.integer.value[0];
 316
 317         /* prepare the message buffer from template */
 318         switch (elem->head.id) {
 319         case SND_US16X08_ID_BYPASS:
 320                 memcpy(buf, bypass_msg_out, sizeof(bypass_msg_out));
 321                 buf[2] = val;
 322                 err = snd_us16x08_send_urb(chip, buf, sizeof(bypass_msg_out));
 323                 break;
 324         case SND_US16X08_ID_BUSS_OUT:
 325                 memcpy(buf, bus_msg_out, sizeof(bus_msg_out));
 326                 buf[2] = val;
 327                 err = snd_us16x08_send_urb(chip, buf, sizeof(bus_msg_out));
 328                 break;
 329         case SND_US16X08_ID_MUTE:
 330                 memcpy(buf, mix_msg_out, sizeof(mix_msg_out));
 331                 buf[8] = val;
 332                 buf[6] = elem->head.id;
 333                 buf[5] = 1;
 334                 err = snd_us16x08_send_urb(chip, buf, sizeof(mix_msg_out));
 335                 break;
 336         }
 337
 338         if (err > 0) {
 339                 elem->cached |= 1;
 340                 elem->cache_val[0] = val;
 341         } else {
 342                 usb_audio_dbg(chip, "Failed to set buss param, err:%d\n", err);
 343         }
 344
 345         return err > 0 ? 1 : 0;
 346 }
 347
 348 static int snd_us16x08_bus_get(struct snd_kcontrol *kcontrol,
 349         struct snd_ctl_elem_value *ucontrol)
 350 {
 351         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 352
 353         switch (elem->head.id) {
 354         case SND_US16X08_ID_BUSS_OUT:
 355                 ucontrol->value.integer.value[0] = elem->cache_val[0];
 356                 break;
 357         case SND_US16X08_ID_BYPASS:
 358                 ucontrol->value.integer.value[0] = elem->cache_val[0];
 359                 break;
 360         case SND_US16X08_ID_MUTE:
 361                 ucontrol->value.integer.value[0] = elem->cache_val[0];
 362                 break;
 363         }
 364
 365         return 0;
 366 }
 367
 368 /* gets a current mixer value from common store */
 369 static int snd_us16x08_channel_get(struct snd_kcontrol *kcontrol,
 370         struct snd_ctl_elem_value *ucontrol)
 371 {
 372         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 373         int index = ucontrol->id.index;
 374
 375         ucontrol->value.integer.value[0] = elem->cache_val[index];
 376
 377         return 0;
 378 }
 379
 380 static int snd_us16x08_channel_put(struct snd_kcontrol *kcontrol,
 381         struct snd_ctl_elem_value *ucontrol)
 382 {
 383         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 384         struct snd_usb_audio *chip = elem->head.mixer->chip;
 385         char buf[sizeof(mix_msg_in)];
 386         int val, err;
 387         int index = ucontrol->id.index;
 388
 389         val = ucontrol->value.integer.value[0];
 390
 391         /* sanity check */
 392         if (val < SND_US16X08_KCMIN(kcontrol)
 393                 || val > SND_US16X08_KCMAX(kcontrol))
 394                 return -EINVAL;
 395
 396         /* prepare URB message from template */
 397         memcpy(buf, mix_msg_in, sizeof(mix_msg_in));
 398
 399         /* add the bias to the new value */
 400         buf[8] = val - SND_US16X08_KCBIAS(kcontrol);
 401         buf[6] = elem->head.id;
 402         buf[5] = index + 1;
 403
 404         err = snd_us16x08_send_urb(chip, buf, sizeof(mix_msg_in));
 405
 406         if (err > 0) {
 407                 elem->cached |= 1 << index;
 408                 elem->cache_val[index] = val;
 409         } else {
 410                 usb_audio_dbg(chip, "Failed to set channel, err:%d\n", err);
 411         }
 412
 413         return err > 0 ? 1 : 0;
 414 }
 415
 416 static int snd_us16x08_mix_info(struct snd_kcontrol *kcontrol,
 417         struct snd_ctl_elem_info *uinfo)
 418 {
 419         uinfo->count = 1;
 420         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 421         uinfo->value.integer.max = SND_US16X08_KCMAX(kcontrol);
 422         uinfo->value.integer.min = SND_US16X08_KCMIN(kcontrol);
 423         uinfo->value.integer.step = SND_US16X08_KCSTEP(kcontrol);
 424         return 0;
 425 }
 426
 427 static int snd_us16x08_comp_get(struct snd_kcontrol *kcontrol,
 428         struct snd_ctl_elem_value *ucontrol)
 429 {
 430         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 431         struct snd_us16x08_comp_store *store = elem->private_data;
 432         int index = ucontrol->id.index;
 433         int val_idx = COMP_STORE_IDX(elem->head.id);
 434
 435         ucontrol->value.integer.value[0] = store->val[val_idx][index];
 436
 437         return 0;
 438 }
 439
 440 static int snd_us16x08_comp_put(struct snd_kcontrol *kcontrol,
 441         struct snd_ctl_elem_value *ucontrol)
 442 {
 443         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 444         struct snd_usb_audio *chip = elem->head.mixer->chip;
 445         struct snd_us16x08_comp_store *store = elem->private_data;
 446         int index = ucontrol->id.index;
 447         char buf[sizeof(comp_msg)];
 448         int val_idx, val;
 449         int err;
 450
 451         val = ucontrol->value.integer.value[0];
 452
 453         /* sanity check */
 454         if (val < SND_US16X08_KCMIN(kcontrol)
 455                 || val > SND_US16X08_KCMAX(kcontrol))
 456                 return -EINVAL;
 457
 458         /* new control value incl. bias*/
 459         val_idx = elem->head.id - SND_US16X08_ID_COMP_BASE;
 460
 461         store->val[val_idx][index] = ucontrol->value.integer.value[0];
 462
 463         /* prepare compressor URB message from template  */
 464         memcpy(buf, comp_msg, sizeof(comp_msg));
 465
 466         /* place comp values in message buffer watch bias! */
 467         buf[8] = store->val[
 468                 COMP_STORE_IDX(SND_US16X08_ID_COMP_THRESHOLD)][index]
 469                 - SND_US16X08_COMP_THRESHOLD_BIAS;
 470         buf[11] = ratio_map[store->val[
 471                 COMP_STORE_IDX(SND_US16X08_ID_COMP_RATIO)][index]];
 472         buf[14] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_ATTACK)][index]
 473                 + SND_US16X08_COMP_ATTACK_BIAS;
 474         buf[17] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_RELEASE)][index]
 475                 + SND_US16X08_COMP_RELEASE_BIAS;
 476         buf[20] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_GAIN)][index];
 477         buf[26] = store->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_SWITCH)][index];
 478
 479         /* place channel selector in message buffer */
 480         buf[5] = index + 1;
 481
 482         err = snd_us16x08_send_urb(chip, buf, sizeof(comp_msg));
 483
 484         if (err > 0) {
 485                 elem->cached |= 1 << index;
 486                 elem->cache_val[index] = val;
 487         } else {
 488                 usb_audio_dbg(chip, "Failed to set compressor, err:%d\n", err);
 489         }
 490
 491         return 1;
 492 }
 493
 494 static int snd_us16x08_eqswitch_get(struct snd_kcontrol *kcontrol,
 495         struct snd_ctl_elem_value *ucontrol)
 496 {
 497         int val;
 498         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 499         struct snd_us16x08_eq_store *store = elem->private_data;
 500         int index = ucontrol->id.index;
 501
 502         /* get low switch from cache is enough, cause all bands are together */
 503         val = store->val[EQ_STORE_BAND_IDX(elem->head.id)]
 504                 [EQ_STORE_PARAM_IDX(elem->head.id)][index];
 505         ucontrol->value.integer.value[0] = val;
 506
 507         return 0;
 508 }
 509
 510 static int snd_us16x08_eqswitch_put(struct snd_kcontrol *kcontrol,
 511         struct snd_ctl_elem_value *ucontrol)
 512 {
 513         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 514         struct snd_usb_audio *chip = elem->head.mixer->chip;
 515         struct snd_us16x08_eq_store *store = elem->private_data;
 516         int index = ucontrol->id.index;
 517         char buf[sizeof(eqs_msq)];
 518         int val, err = 0;
 519         int b_idx;
 520
 521         /* new control value incl. bias*/
 522         val = ucontrol->value.integer.value[0] + SND_US16X08_KCBIAS(kcontrol);
 523
 524         /* prepare URB message from EQ template */
 525         memcpy(buf, eqs_msq, sizeof(eqs_msq));
 526
 527         /* place channel index in URB message */
 528         buf[5] = index + 1;
 529         for (b_idx = 0; b_idx < SND_US16X08_ID_EQ_BAND_COUNT; b_idx++) {
 530                 /* all four EQ bands have to be enabled/disabled in once */
 531                 buf[20] = val;
 532                 buf[17] = store->val[b_idx][2][index];
 533                 buf[14] = store->val[b_idx][1][index];
 534                 buf[11] = store->val[b_idx][0][index];
 535                 buf[8] = b_idx + 1;
 536                 err = snd_us16x08_send_urb(chip, buf, sizeof(eqs_msq));
 537                 if (err < 0)
 538                         break;
 539                 store->val[b_idx][3][index] = val;
 540                 msleep(15);
 541         }
 542
 543         if (err > 0) {
 544                 elem->cached |= 1 << index;
 545                 elem->cache_val[index] = val;
 546         } else {
 547                 usb_audio_dbg(chip, "Failed to set eq switch, err:%d\n", err);
 548         }
 549
 550         return 1;
 551 }
 552
 553 static int snd_us16x08_eq_get(struct snd_kcontrol *kcontrol,
 554         struct snd_ctl_elem_value *ucontrol)
 555 {
 556         int val;
 557         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 558         struct snd_us16x08_eq_store *store = elem->private_data;
 559         int index = ucontrol->id.index;
 560         int b_idx = EQ_STORE_BAND_IDX(elem->head.id) - 1;
 561         int p_idx = EQ_STORE_PARAM_IDX(elem->head.id);
 562
 563         val = store->val[b_idx][p_idx][index];
 564
 565         ucontrol->value.integer.value[0] = val;
 566
 567         return 0;
 568 }
 569
 570 static int snd_us16x08_eq_put(struct snd_kcontrol *kcontrol,
 571         struct snd_ctl_elem_value *ucontrol)
 572 {
 573         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 574         struct snd_usb_audio *chip = elem->head.mixer->chip;
 575         struct snd_us16x08_eq_store *store = elem->private_data;
 576         int index = ucontrol->id.index;
 577         char buf[sizeof(eqs_msq)];
 578         int val, err;
 579         int b_idx = EQ_STORE_BAND_IDX(elem->head.id) - 1;
 580         int p_idx = EQ_STORE_PARAM_IDX(elem->head.id);
 581
 582         val = ucontrol->value.integer.value[0];
 583
 584         /* sanity check */
 585         if (val < SND_US16X08_KCMIN(kcontrol)
 586                 || val > SND_US16X08_KCMAX(kcontrol))
 587                 return -EINVAL;
 588
 589         /* copy URB buffer from EQ template */
 590         memcpy(buf, eqs_msq, sizeof(eqs_msq));
 591
 592         store->val[b_idx][p_idx][index] = val;
 593         buf[20] = store->val[b_idx][3][index];
 594         buf[17] = store->val[b_idx][2][index];
 595         buf[14] = store->val[b_idx][1][index];
 596         buf[11] = store->val[b_idx][0][index];
 597
 598         /* place channel index in URB buffer */
 599         buf[5] = index + 1;
 600
 601         /* place EQ band in URB buffer */
 602         buf[8] = b_idx + 1;
 603
 604         err = snd_us16x08_send_urb(chip, buf, sizeof(eqs_msq));
 605
 606         if (err > 0) {
 607                 /* store new value in EQ band cache */
 608                 elem->cached |= 1 << index;
 609                 elem->cache_val[index] = val;
 610         } else {
 611                 usb_audio_dbg(chip, "Failed to set eq param, err:%d\n", err);
 612         }
 613
 614         return 1;
 615 }
 616
 617 static int snd_us16x08_meter_info(struct snd_kcontrol *kcontrol,
 618         struct snd_ctl_elem_info *uinfo)
 619 {
 620         uinfo->count = 1;
 621         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 622         uinfo->value.integer.max = 0x7FFF;
 623         uinfo->value.integer.min = 0;
 624
 625         return 0;
 626 }
 627
 628 /* calculate compressor index for reduction level request */
 629 static int snd_get_meter_comp_index(struct snd_us16x08_meter_store *store)
 630 {
 631         int ret;
 632
 633         /* any channel active */
 634         if (store->comp_active_index) {
 635                 /* check for stereo link */
 636                 if (store->comp_active_index & 0x20) {
 637                         /* reset comp_index to left channel*/
 638                         if (store->comp_index -
 639                                 store->comp_active_index > 1)
 640                                 store->comp_index =
 641                                 store->comp_active_index;
 642
 643                         ret = store->comp_index++ & 0x1F;
 644                 } else {
 645                         /* no stereo link */
 646                         ret = store->comp_active_index;
 647                 }
 648         } else {
 649                 /* skip channels with no compressor active */
 650                 while (!store->comp_store->val[
 651                         COMP_STORE_IDX(SND_US16X08_ID_COMP_SWITCH)]
 652                         [store->comp_index - 1]
 653                         && store->comp_index <= SND_US16X08_MAX_CHANNELS) {
 654                         store->comp_index++;
 655                 }
 656                 ret = store->comp_index++;
 657                 if (store->comp_index > SND_US16X08_MAX_CHANNELS)
 658                         store->comp_index = 1;
 659         }
 660         return ret;
 661 }
 662
 663 /* retrieve the meter level values from URB message */
 664 static void get_meter_levels_from_urb(int s,
 665         struct snd_us16x08_meter_store *store,
 666         u8 *meter_urb)
 667 {
 668         int val = MUC2(meter_urb, s) + (MUC3(meter_urb, s) << 8);
 669
 670         if (MUA0(meter_urb, s) == 0x61 && MUA1(meter_urb, s) == 0x02 &&
 671                 MUA2(meter_urb, s) == 0x04 && MUB0(meter_urb, s) == 0x62) {
 672                 if (MUC0(meter_urb, s) == 0x72)
 673                         store->meter_level[MUB2(meter_urb, s) - 1] = val;
 674                 if (MUC0(meter_urb, s) == 0xb2)
 675                         store->comp_level[MUB2(meter_urb, s) - 1] = val;
 676         }
 677         if (MUA0(meter_urb, s) == 0x61 && MUA1(meter_urb, s) == 0x02 &&
 678                 MUA2(meter_urb, s) == 0x02 && MUB0(meter_urb, s) == 0x62)
 679                 store->master_level[MUB2(meter_urb, s) - 1] = val;
 680 }
 681
 682 /* Function to retrieve current meter values from the device.
 683  *
 684  * The device needs to be polled for meter values with an initial
 685  * requests. It will return with a sequence of different meter value
 686  * packages. The first request (case 0:) initiate this meter response sequence.
 687  * After the third response, an additional request can be placed,
 688  * to retrieve compressor reduction level value for given channel. This round
 689  * trip channel selector will skip all inactive compressors.
 690  * A mixer can interrupt this round-trip by selecting one ore two (stereo-link)
 691  * specific channels.
 692  */
 693 static int snd_us16x08_meter_get(struct snd_kcontrol *kcontrol,
 694         struct snd_ctl_elem_value *ucontrol)
 695 {
 696         int i, set;
 697         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 698         struct snd_usb_audio *chip = elem->head.mixer->chip;
 699         struct snd_us16x08_meter_store *store = elem->private_data;
 700         u8 meter_urb[64];
 701
 702         switch (kcontrol->private_value) {
 703         case 0: {
 704                 char tmp[sizeof(mix_init_msg1)];
 705
 706                 memcpy(tmp, mix_init_msg1, sizeof(mix_init_msg1));
 707                 snd_us16x08_send_urb(chip, tmp, 4);
 708                 snd_us16x08_recv_urb(chip, meter_urb,
 709                         sizeof(meter_urb));
 710                 kcontrol->private_value++;
 711                 break;
 712         }
 713         case 1:
 714                 snd_us16x08_recv_urb(chip, meter_urb,
 715                         sizeof(meter_urb));
 716                 kcontrol->private_value++;
 717                 break;
 718         case 2:
 719                 snd_us16x08_recv_urb(chip, meter_urb,
 720                         sizeof(meter_urb));
 721                 kcontrol->private_value++;
 722                 break;
 723         case 3: {
 724                 char tmp[sizeof(mix_init_msg2)];
 725
 726                 memcpy(tmp, mix_init_msg2, sizeof(mix_init_msg2));
 727                 tmp[2] = snd_get_meter_comp_index(store);
 728                 snd_us16x08_send_urb(chip, tmp, 10);
 729                 snd_us16x08_recv_urb(chip, meter_urb,
 730                         sizeof(meter_urb));
 731                 kcontrol->private_value = 0;
 732                 break;
 733         }
 734         }
 735
 736         for (set = 0; set < 6; set++)
 737                 get_meter_levels_from_urb(set, store, meter_urb);
 738
 739         for (i = 0; i < SND_US16X08_MAX_CHANNELS; i++) {
 740                 ucontrol->value.integer.value[i] =
 741                         store ? store->meter_level[i] : 0;
 742         }
 743
 744         ucontrol->value.integer.value[i++] = store ? store->master_level[0] : 0;
 745         ucontrol->value.integer.value[i++] = store ? store->master_level[1] : 0;
 746
 747         for (i = 2; i < SND_US16X08_MAX_CHANNELS + 2; i++)
 748                 ucontrol->value.integer.value[i + SND_US16X08_MAX_CHANNELS] =
 749                 store ? store->comp_level[i - 2] : 0;
 750
 751         return 1;
 752 }
 753
 754 static int snd_us16x08_meter_put(struct snd_kcontrol *kcontrol,
 755         struct snd_ctl_elem_value *ucontrol)
 756 {
 757         struct usb_mixer_elem_info *elem = kcontrol->private_data;
 758         struct snd_us16x08_meter_store *store = elem->private_data;
 759         int val;
 760
 761         val = ucontrol->value.integer.value[0];
 762
 763         /* sanity check */
 764         if (val < 0 || val >= SND_US16X08_MAX_CHANNELS)
 765                 return -EINVAL;
 766
 767         store->comp_active_index = val;
 768         store->comp_index = val;
 769
 770         return 1;
 771 }
 772
 773 static struct snd_kcontrol_new snd_us16x08_ch_boolean_ctl = {
 774         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 775         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 776         .count = 16,
 777         .info = snd_us16x08_switch_info,
 778         .get = snd_us16x08_channel_get,
 779         .put = snd_us16x08_channel_put,
 780         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
 781 };
 782
 783 static struct snd_kcontrol_new snd_us16x08_ch_int_ctl = {
 784         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 785         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 786         .count = 16,
 787         .info = snd_us16x08_mix_info,
 788         .get = snd_us16x08_channel_get,
 789         .put = snd_us16x08_channel_put,
 790         .private_value = SND_US16X08_KCSET(SND_US16X08_FADER_BIAS, 1, 0, 133)
 791 };
 792
 793 static struct snd_kcontrol_new snd_us16x08_pan_int_ctl = {
 794         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 795         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 796         .count = 16,
 797         .info = snd_us16x08_mix_info,
 798         .get = snd_us16x08_channel_get,
 799         .put = snd_us16x08_channel_put,
 800         .private_value = SND_US16X08_KCSET(SND_US16X08_FADER_BIAS, 1, 0, 255)
 801 };
 802
 803 static struct snd_kcontrol_new snd_us16x08_master_ctl = {
 804         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 805         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 806         .count = 1,
 807         .info = snd_us16x08_master_info,
 808         .get = snd_us16x08_master_get,
 809         .put = snd_us16x08_master_put,
 810         .private_value = SND_US16X08_KCSET(SND_US16X08_FADER_BIAS, 1, 0, 133)
 811 };
 812
 813 static struct snd_kcontrol_new snd_us16x08_route_ctl = {
 814         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 815         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 816         .count = 8,
 817         .info = snd_us16x08_route_info,
 818         .get = snd_us16x08_route_get,
 819         .put = snd_us16x08_route_put,
 820         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 9)
 821 };
 822
 823 static struct snd_kcontrol_new snd_us16x08_bus_ctl = {
 824         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 825         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 826         .count = 1,
 827         .info = snd_us16x08_switch_info,
 828         .get = snd_us16x08_bus_get,
 829         .put = snd_us16x08_bus_put,
 830         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
 831 };
 832
 833 static struct snd_kcontrol_new snd_us16x08_compswitch_ctl = {
 834         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 835         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 836         .count = 16,
 837         .info = snd_us16x08_switch_info,
 838         .get = snd_us16x08_comp_get,
 839         .put = snd_us16x08_comp_put,
 840         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
 841 };
 842
 843 static struct snd_kcontrol_new snd_us16x08_comp_threshold_ctl = {
 844         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 845         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 846         .count = 16,
 847         .info = snd_us16x08_mix_info,
 848         .get = snd_us16x08_comp_get,
 849         .put = snd_us16x08_comp_put,
 850         .private_value = SND_US16X08_KCSET(SND_US16X08_COMP_THRESHOLD_BIAS, 1,
 851         0, 0x20)
 852 };
 853
 854 static struct snd_kcontrol_new snd_us16x08_comp_ratio_ctl = {
 855         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 856         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 857         .count = 16,
 858         .info = snd_us16x08_mix_info,
 859         .get = snd_us16x08_comp_get,
 860         .put = snd_us16x08_comp_put,
 861         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0,
 862         sizeof(ratio_map) - 1), /*max*/
 863 };
 864
 865 static struct snd_kcontrol_new snd_us16x08_comp_gain_ctl = {
 866         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 867         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 868         .count = 16,
 869         .info = snd_us16x08_mix_info,
 870         .get = snd_us16x08_comp_get,
 871         .put = snd_us16x08_comp_put,
 872         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x14)
 873 };
 874
 875 static struct snd_kcontrol_new snd_us16x08_comp_attack_ctl = {
 876         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 877         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 878         .count = 16,
 879         .info = snd_us16x08_mix_info,
 880         .get = snd_us16x08_comp_get,
 881         .put = snd_us16x08_comp_put,
 882         .private_value =
 883         SND_US16X08_KCSET(SND_US16X08_COMP_ATTACK_BIAS, 1, 0, 0xc6),
 884 };
 885
 886 static struct snd_kcontrol_new snd_us16x08_comp_release_ctl = {
 887         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 888         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 889         .count = 16,
 890         .info = snd_us16x08_mix_info,
 891         .get = snd_us16x08_comp_get,
 892         .put = snd_us16x08_comp_put,
 893         .private_value =
 894         SND_US16X08_KCSET(SND_US16X08_COMP_RELEASE_BIAS, 1, 0, 0x63),
 895 };
 896
 897 static struct snd_kcontrol_new snd_us16x08_eq_gain_ctl = {
 898         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 899         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 900         .count = 16,
 901         .info = snd_us16x08_mix_info,
 902         .get = snd_us16x08_eq_get,
 903         .put = snd_us16x08_eq_put,
 904         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 24),
 905 };
 906
 907 static struct snd_kcontrol_new snd_us16x08_eq_low_freq_ctl = {
 908         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 909         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 910         .count = 16,
 911         .info = snd_us16x08_mix_info,
 912         .get = snd_us16x08_eq_get,
 913         .put = snd_us16x08_eq_put,
 914         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x1F),
 915 };
 916
 917 static struct snd_kcontrol_new snd_us16x08_eq_mid_freq_ctl = {
 918         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 919         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 920         .count = 16,
 921         .info = snd_us16x08_mix_info,
 922         .get = snd_us16x08_eq_get,
 923         .put = snd_us16x08_eq_put,
 924         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x3F)
 925 };
 926
 927 static struct snd_kcontrol_new snd_us16x08_eq_mid_width_ctl = {
 928         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 929         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 930         .count = 16,
 931         .info = snd_us16x08_mix_info,
 932         .get = snd_us16x08_eq_get,
 933         .put = snd_us16x08_eq_put,
 934         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 0x06)
 935 };
 936
 937 static struct snd_kcontrol_new snd_us16x08_eq_high_freq_ctl = {
 938         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 939         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 940         .count = 16,
 941         .info = snd_us16x08_mix_info,
 942         .get = snd_us16x08_eq_get,
 943         .put = snd_us16x08_eq_put,
 944         .private_value =
 945         SND_US16X08_KCSET(SND_US16X08_EQ_HIGHFREQ_BIAS, 1, 0, 0x1F)
 946 };
 947
 948 static struct snd_kcontrol_new snd_us16x08_eq_switch_ctl = {
 949         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 950         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 951         .count = 16,
 952         .info = snd_us16x08_switch_info,
 953         .get = snd_us16x08_eqswitch_get,
 954         .put = snd_us16x08_eqswitch_put,
 955         .private_value = SND_US16X08_KCSET(SND_US16X08_NO_BIAS, 1, 0, 1)
 956 };
 957
 958 static struct snd_kcontrol_new snd_us16x08_meter_ctl = {
 959         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 960         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 961         .count = 1,
 962         .info = snd_us16x08_meter_info,
 963         .get = snd_us16x08_meter_get,
 964         .put = snd_us16x08_meter_put
 965 };
 966
 967 /* control store preparation */
 968
 969 /* setup compressor store and assign default value */
 970 static struct snd_us16x08_comp_store *snd_us16x08_create_comp_store(void)
 971 {
 972         int i;
 973         struct snd_us16x08_comp_store *tmp;
 974
 975         tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
 976         if (!tmp)
 977                 return NULL;
 978
 979         for (i = 0; i < SND_US16X08_MAX_CHANNELS; i++) {
 980                 tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_THRESHOLD)][i]
 981                         = 0x20;
 982                 tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_RATIO)][i] = 0x00;
 983                 tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_GAIN)][i] = 0x00;
 984                 tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_SWITCH)][i] = 0x00;
 985                 tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_ATTACK)][i] = 0x00;
 986                 tmp->val[COMP_STORE_IDX(SND_US16X08_ID_COMP_RELEASE)][i] = 0x00;
 987         }
 988         return tmp;
 989 }
 990
 991 /* setup EQ store and assign default values */
 992 static struct snd_us16x08_eq_store *snd_us16x08_create_eq_store(void)
 993 {
 994         int i, b_idx;
 995         struct snd_us16x08_eq_store *tmp;
 996
 997         tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
 998         if (!tmp)
 999                 return NULL;
1000
1001         for (i = 0; i < SND_US16X08_MAX_CHANNELS; i++) {
1002                 for (b_idx = 0; b_idx < SND_US16X08_ID_EQ_BAND_COUNT; b_idx++) {
1003                         tmp->val[b_idx][0][i] = 0x0c;
1004                         tmp->val[b_idx][3][i] = 0x00;
1005                         switch (b_idx) {
1006                         case 0: /* EQ Low */
1007                                 tmp->val[b_idx][1][i] = 0x05;
1008                                 tmp->val[b_idx][2][i] = 0xff;
1009                                 break;
1010                         case 1: /* EQ Mid low */
1011                                 tmp->val[b_idx][1][i] = 0x0e;
1012                                 tmp->val[b_idx][2][i] = 0x02;
1013                                 break;
1014                         case 2: /* EQ Mid High */
1015                                 tmp->val[b_idx][1][i] = 0x1b;
1016                                 tmp->val[b_idx][2][i] = 0x02;
1017                                 break;
1018                         case 3: /* EQ High */
1019                                 tmp->val[b_idx][1][i] = 0x2f
1020                                         - SND_US16X08_EQ_HIGHFREQ_BIAS;
1021                                 tmp->val[b_idx][2][i] = 0xff;
1022                                 break;
1023                         }
1024                 }
1025         }
1026         return tmp;
1027 }
1028
1029 static struct snd_us16x08_meter_store *snd_us16x08_create_meter_store(void)
1030 {
1031         struct snd_us16x08_meter_store *tmp;
1032
1033         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
1034         if (!tmp)
1035                 return NULL;
1036         tmp->comp_index = 1;
1037         tmp->comp_active_index = 0;
1038         return tmp;
1039 }
1040
1041 /* release elem->private_free as well; called only once for each *_store */
1042 static void elem_private_free(struct snd_kcontrol *kctl)
1043 {
1044         struct usb_mixer_elem_info *elem = kctl->private_data;
1045
1046         if (elem)
1047                 kfree(elem->private_data);
1048         kfree(elem);
1049         kctl->private_data = NULL;
1050 }
1051
1052 static int add_new_ctl(struct usb_mixer_interface *mixer,
1053         const struct snd_kcontrol_new *ncontrol,
1054         int index, int val_type, int channels,
1055         const char *name, void *opt,
1056         bool do_private_free,
1057         struct usb_mixer_elem_info **elem_ret)
1058 {
1059         struct snd_kcontrol *kctl;
1060         struct usb_mixer_elem_info *elem;
1061         int err;
1062
1063         usb_audio_dbg(mixer->chip, "us16x08 add mixer %s\n", name);
1064
1065         elem = kzalloc(sizeof(*elem), GFP_KERNEL);
1066         if (!elem)
1067                 return -ENOMEM;
1068
1069         elem->head.mixer = mixer;
1070         elem->head.resume = NULL;
1071         elem->control = 0;
1072         elem->idx_off = 0;
1073         elem->head.id = index;
1074         elem->val_type = val_type;
1075         elem->channels = channels;
1076         elem->private_data = opt;
1077
1078         kctl = snd_ctl_new1(ncontrol, elem);
1079         if (!kctl) {
1080                 kfree(elem);
1081                 return -ENOMEM;
1082         }
1083
1084         if (do_private_free)
1085                 kctl->private_free = elem_private_free;
1086         else
1087                 kctl->private_free = snd_usb_mixer_elem_free;
1088
1089         strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1090
1091         err = snd_usb_mixer_add_control(&elem->head, kctl);
1092         if (err < 0)
1093                 return err;
1094
1095         if (elem_ret)
1096                 *elem_ret = elem;
1097
1098         return 0;
1099 }
1100
1101 /* table of EQ controls */
1102 static const struct snd_us16x08_control_params eq_controls[] = {
1103         { /* EQ switch */
1104                 .kcontrol_new = &snd_us16x08_eq_switch_ctl,
1105                 .control_id = SND_US16X08_ID_EQENABLE,
1106                 .type = USB_MIXER_BOOLEAN,
1107                 .num_channels = 16,
1108                 .name = "EQ Switch",
1109         },
1110         { /* EQ low gain */
1111                 .kcontrol_new = &snd_us16x08_eq_gain_ctl,
1112                 .control_id = SND_US16X08_ID_EQLOWLEVEL,
1113                 .type = USB_MIXER_U8,
1114                 .num_channels = 16,
1115                 .name = "EQ Low Volume",
1116         },
1117         { /* EQ low freq */
1118                 .kcontrol_new = &snd_us16x08_eq_low_freq_ctl,
1119                 .control_id = SND_US16X08_ID_EQLOWFREQ,
1120                 .type = USB_MIXER_U8,
1121                 .num_channels = 16,
1122                 .name = "EQ Low Frequence",
1123         },
1124         { /* EQ mid low gain */
1125                 .kcontrol_new = &snd_us16x08_eq_gain_ctl,
1126                 .control_id = SND_US16X08_ID_EQLOWMIDLEVEL,
1127                 .type = USB_MIXER_U8,
1128                 .num_channels = 16,
1129                 .name = "EQ MidLow Volume",
1130         },
1131         { /* EQ mid low freq */
1132                 .kcontrol_new = &snd_us16x08_eq_mid_freq_ctl,
1133                 .control_id = SND_US16X08_ID_EQLOWMIDFREQ,
1134                 .type = USB_MIXER_U8,
1135                 .num_channels = 16,
1136                 .name = "EQ MidLow Frequence",
1137         },
1138         { /* EQ mid low Q */
1139                 .kcontrol_new = &snd_us16x08_eq_mid_width_ctl,
1140                 .control_id = SND_US16X08_ID_EQLOWMIDWIDTH,
1141                 .type = USB_MIXER_U8,
1142                 .num_channels = 16,
1143                 .name = "EQ MidLow Q",
1144         },
1145         { /* EQ mid high gain */
1146                 .kcontrol_new = &snd_us16x08_eq_gain_ctl,
1147                 .control_id = SND_US16X08_ID_EQHIGHMIDLEVEL,
1148                 .type = USB_MIXER_U8,
1149                 .num_channels = 16,
1150                 .name = "EQ MidHigh Volume",
1151         },
1152         { /* EQ mid high freq */
1153                 .kcontrol_new = &snd_us16x08_eq_mid_freq_ctl,
1154                 .control_id = SND_US16X08_ID_EQHIGHMIDFREQ,
1155                 .type = USB_MIXER_U8,
1156                 .num_channels = 16,
1157                 .name = "EQ MidHigh Frequence",
1158         },
1159         { /* EQ mid high Q */
1160                 .kcontrol_new = &snd_us16x08_eq_mid_width_ctl,
1161                 .control_id = SND_US16X08_ID_EQHIGHMIDWIDTH,
1162                 .type = USB_MIXER_U8,
1163                 .num_channels = 16,
1164                 .name = "EQ MidHigh Q",
1165         },
1166         { /* EQ high gain */
1167                 .kcontrol_new = &snd_us16x08_eq_gain_ctl,
1168                 .control_id = SND_US16X08_ID_EQHIGHLEVEL,
1169                 .type = USB_MIXER_U8,
1170                 .num_channels = 16,
1171                 .name = "EQ High Volume",
1172         },
1173         { /* EQ low freq */
1174                 .kcontrol_new = &snd_us16x08_eq_high_freq_ctl,
1175                 .control_id = SND_US16X08_ID_EQHIGHFREQ,
1176                 .type = USB_MIXER_U8,
1177                 .num_channels = 16,
1178                 .name = "EQ High Frequence",
1179         },
1180 };
1181
1182 /* table of compressor controls */
1183 static const struct snd_us16x08_control_params comp_controls[] = {
1184         { /* Comp enable */
1185                 .kcontrol_new = &snd_us16x08_compswitch_ctl,
1186                 .control_id = SND_US16X08_ID_COMP_SWITCH,
1187                 .type = USB_MIXER_BOOLEAN,
1188                 .num_channels = 16,
1189                 .name = "Compressor Switch",
1190         },
1191         { /* Comp threshold */
1192                 .kcontrol_new = &snd_us16x08_comp_threshold_ctl,
1193                 .control_id = SND_US16X08_ID_COMP_THRESHOLD,
1194                 .type = USB_MIXER_U8,
1195                 .num_channels = 16,
1196                 .name = "Compressor Threshold Volume",
1197         },
1198         { /* Comp ratio */
1199                 .kcontrol_new = &snd_us16x08_comp_ratio_ctl,
1200                 .control_id = SND_US16X08_ID_COMP_RATIO,
1201                 .type = USB_MIXER_U8,
1202                 .num_channels = 16,
1203                 .name = "Compressor Ratio",
1204         },
1205         { /* Comp attack */
1206                 .kcontrol_new = &snd_us16x08_comp_attack_ctl,
1207                 .control_id = SND_US16X08_ID_COMP_ATTACK,
1208                 .type = USB_MIXER_U8,
1209                 .num_channels = 16,
1210                 .name = "Compressor Attack",
1211         },
1212         { /* Comp release */
1213                 .kcontrol_new = &snd_us16x08_comp_release_ctl,
1214                 .control_id = SND_US16X08_ID_COMP_RELEASE,
1215                 .type = USB_MIXER_U8,
1216                 .num_channels = 16,
1217                 .name = "Compressor Release",
1218         },
1219         { /* Comp gain */
1220                 .kcontrol_new = &snd_us16x08_comp_gain_ctl,
1221                 .control_id = SND_US16X08_ID_COMP_GAIN,
1222                 .type = USB_MIXER_U8,
1223                 .num_channels = 16,
1224                 .name = "Compressor Volume",
1225         },
1226 };
1227
1228 /* table of channel controls */
1229 static const struct snd_us16x08_control_params channel_controls[] = {
1230         { /* Phase */
1231                 .kcontrol_new = &snd_us16x08_ch_boolean_ctl,
1232                 .control_id = SND_US16X08_ID_PHASE,
1233                 .type = USB_MIXER_BOOLEAN,
1234                 .num_channels = 16,
1235                 .name = "Phase Switch",
1236                 .default_val = 0
1237         },
1238         { /* Fader */
1239                 .kcontrol_new = &snd_us16x08_ch_int_ctl,
1240                 .control_id = SND_US16X08_ID_FADER,
1241                 .type = USB_MIXER_U8,
1242                 .num_channels = 16,
1243                 .name = "Line Volume",
1244                 .default_val = 127
1245         },
1246         { /* Mute */
1247                 .kcontrol_new = &snd_us16x08_ch_boolean_ctl,
1248                 .control_id = SND_US16X08_ID_MUTE,
1249                 .type = USB_MIXER_BOOLEAN,
1250                 .num_channels = 16,
1251                 .name = "Mute Switch",
1252                 .default_val = 0
1253         },
1254         { /* Pan */
1255                 .kcontrol_new = &snd_us16x08_pan_int_ctl,
1256                 .control_id = SND_US16X08_ID_PAN,
1257                 .type = USB_MIXER_U16,
1258                 .num_channels = 16,
1259                 .name = "Pan Left-Right Volume",
1260                 .default_val = 127
1261         },
1262 };
1263
1264 /* table of master controls */
1265 static const struct snd_us16x08_control_params master_controls[] = {
1266         { /* Master */
1267                 .kcontrol_new = &snd_us16x08_master_ctl,
1268                 .control_id = SND_US16X08_ID_FADER,
1269                 .type = USB_MIXER_U8,
1270                 .num_channels = 16,
1271                 .name = "Master Volume",
1272                 .default_val = 127
1273         },
1274         { /* Bypass */
1275                 .kcontrol_new = &snd_us16x08_bus_ctl,
1276                 .control_id = SND_US16X08_ID_BYPASS,
1277                 .type = USB_MIXER_BOOLEAN,
1278                 .num_channels = 16,
1279                 .name = "DSP Bypass Switch",
1280                 .default_val = 0
1281         },
1282         { /* Buss out */
1283                 .kcontrol_new = &snd_us16x08_bus_ctl,
1284                 .control_id = SND_US16X08_ID_BUSS_OUT,
1285                 .type = USB_MIXER_BOOLEAN,
1286                 .num_channels = 16,
1287                 .name = "Buss Out Switch",
1288                 .default_val = 0
1289         },
1290         { /* Master mute */
1291                 .kcontrol_new = &snd_us16x08_bus_ctl,
1292                 .control_id = SND_US16X08_ID_MUTE,
1293                 .type = USB_MIXER_BOOLEAN,
1294                 .num_channels = 16,
1295                 .name = "Master Mute Switch",
1296                 .default_val = 0
1297         },
1298
1299 };
1300
1301 int snd_us16x08_controls_create(struct usb_mixer_interface *mixer)
1302 {
1303         int i, j;
1304         int err;
1305         struct usb_mixer_elem_info *elem;
1306         struct snd_us16x08_comp_store *comp_store;
1307         struct snd_us16x08_meter_store *meter_store;
1308         struct snd_us16x08_eq_store *eq_store;
1309
1310         /* just check for non-MIDI interface */
1311         if (mixer->hostif->desc.bInterfaceNumber == 3) {
1312
1313                 /* add routing control */
1314                 err = add_new_ctl(mixer, &snd_us16x08_route_ctl,
1315                         SND_US16X08_ID_ROUTE, USB_MIXER_U8, 8, "Line Out Route",
1316                         NULL, false, &elem);
1317                 if (err < 0) {
1318                         usb_audio_dbg(mixer->chip,
1319                                 "Failed to create route control, err:%d\n",
1320                                 err);
1321                         return err;
1322                 }
1323                 for (i = 0; i < 8; i++)
1324                         elem->cache_val[i] = i < 2 ? i : i + 2;
1325                 elem->cached = 0xff;
1326
1327                 /* create compressor mixer elements */
1328                 comp_store = snd_us16x08_create_comp_store();
1329                 if (!comp_store)
1330                         return -ENOMEM;
1331
1332                 /* add master controls */
1333                 for (i = 0; i < ARRAY_SIZE(master_controls); i++) {
1334
1335                         err = add_new_ctl(mixer,
1336                                 master_controls[i].kcontrol_new,
1337                                 master_controls[i].control_id,
1338                                 master_controls[i].type,
1339                                 master_controls[i].num_channels,
1340                                 master_controls[i].name,
1341                                 comp_store,
1342                                 i == 0, /* release comp_store only once */
1343                                 &elem);
1344                         if (err < 0)
1345                                 return err;
1346                         elem->cache_val[0] = master_controls[i].default_val;
1347                         elem->cached = 1;
1348                 }
1349
1350                 /* add channel controls */
1351                 for (i = 0; i < ARRAY_SIZE(channel_controls); i++) {
1352
1353                         err = add_new_ctl(mixer,
1354                                 channel_controls[i].kcontrol_new,
1355                                 channel_controls[i].control_id,
1356                                 channel_controls[i].type,
1357                                 channel_controls[i].num_channels,
1358                                 channel_controls[i].name,
1359                                 comp_store,
1360                                 false, &elem);
1361                         if (err < 0)
1362                                 return err;
1363                         for (j = 0; j < SND_US16X08_MAX_CHANNELS; j++) {
1364                                 elem->cache_val[j] =
1365                                         channel_controls[i].default_val;
1366                         }
1367                         elem->cached = 0xffff;
1368                 }
1369
1370                 /* create eq store */
1371                 eq_store = snd_us16x08_create_eq_store();
1372                 if (!eq_store)
1373                         return -ENOMEM;
1374
1375                 /* add EQ controls */
1376                 for (i = 0; i < ARRAY_SIZE(eq_controls); i++) {
1377
1378                         err = add_new_ctl(mixer,
1379                                 eq_controls[i].kcontrol_new,
1380                                 eq_controls[i].control_id,
1381                                 eq_controls[i].type,
1382                                 eq_controls[i].num_channels,
1383                                 eq_controls[i].name,
1384                                 eq_store,
1385                                 i == 0, /* release eq_store only once */
1386                                 NULL);
1387                         if (err < 0)
1388                                 return err;
1389                 }
1390
1391                 /* add compressor controls */
1392                 for (i = 0; i < ARRAY_SIZE(comp_controls); i++) {
1393
1394                         err = add_new_ctl(mixer,
1395                                 comp_controls[i].kcontrol_new,
1396                                 comp_controls[i].control_id,
1397                                 comp_controls[i].type,
1398                                 comp_controls[i].num_channels,
1399                                 comp_controls[i].name,
1400                                 comp_store,
1401                                 false, NULL);
1402                         if (err < 0)
1403                                 return err;
1404                 }
1405
1406                 /* create meters store */
1407                 meter_store = snd_us16x08_create_meter_store();
1408                 if (!meter_store)
1409                         return -ENOMEM;
1410
1411                 /* meter function 'get' must access to compressor store
1412                  * so place a reference here
1413                  */
1414                 meter_store->comp_store = comp_store;
1415                 err = add_new_ctl(mixer, &snd_us16x08_meter_ctl,
1416                         SND_US16X08_ID_METER, USB_MIXER_U16, 0, "Level Meter",
1417                         meter_store, true, NULL);
1418                 if (err < 0)
1419                         return err;
1420         }
1421
1422         return 0;
1423 }
1424