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  *
  13  *   This program is free software; you can redistribute it and/or modify
  14  *   it under the terms of the GNU General Public License as published by
  15  *   the Free Software Foundation; either version 2 of the License, or
  16  *   (at your option) any later version.
  17  *
  18  *   This program is distributed in the hope that it will be useful,
  19  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *   GNU General Public License for more details.
  22  *
  23  *   You should have received a copy of the GNU General Public License
  24  *   along with this program; if not, write to the Free Software
  25  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/slab.h>
  30 #include <linux/usb.h>
  31 #include <linux/usb/audio.h>
  32
  33 #include <sound/core.h>
  34 #include <sound/control.h>
  35 #include <sound/hwdep.h>
  36 #include <sound/info.h>
  37
  38 #include "usbaudio.h"
  39 #include "mixer.h"
  40 #include "mixer_quirks.h"
  41 #include "helper.h"
  42
  43 /*
  44  * Sound Blaster remote control configuration
  45  *
  46  * format of remote control data:
  47  * Extigy:       xx 00
  48  * Audigy 2 NX:  06 80 xx 00 00 00
  49  * Live! 24-bit: 06 80 xx yy 22 83
  50  */
  51 static const struct rc_config {
  52         u32 usb_id;
  53         u8  offset;
  54         u8  length;
  55         u8  packet_length;
  56         u8  min_packet_length; /* minimum accepted length of the URB result */
  57         u8  mute_mixer_id;
  58         u32 mute_code;
  59 } rc_configs[] = {
  60         { USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
  61         { USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
  62         { USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
  63         { USB_ID(0x041e, 0x3042), 0, 1, 1, 1,  1,  0x000d }, /* Usb X-Fi S51 */
  64         { USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
  65 };
  66
  67 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
  68 {
  69         struct usb_mixer_interface *mixer = urb->context;
  70         const struct rc_config *rc = mixer->rc_cfg;
  71         u32 code;
  72
  73         if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
  74                 return;
  75
  76         code = mixer->rc_buffer[rc->offset];
  77         if (rc->length == 2)
  78                 code |= mixer->rc_buffer[rc->offset + 1] << 8;
  79
  80         /* the Mute button actually changes the mixer control */
  81         if (code == rc->mute_code)
  82                 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
  83         mixer->rc_code = code;
  84         wmb();
  85         wake_up(&mixer->rc_waitq);
  86 }
  87
  88 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
  89                                      long count, loff_t *offset)
  90 {
  91         struct usb_mixer_interface *mixer = hw->private_data;
  92         int err;
  93         u32 rc_code;
  94
  95         if (count != 1 && count != 4)
  96                 return -EINVAL;
  97         err = wait_event_interruptible(mixer->rc_waitq,
  98                                        (rc_code = xchg(&mixer->rc_code, 0)) != 0);
  99         if (err == 0) {
 100                 if (count == 1)
 101                         err = put_user(rc_code, buf);
 102                 else
 103                         err = put_user(rc_code, (u32 __user *)buf);
 104         }
 105         return err < 0 ? err : count;
 106 }
 107
 108 static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
 109                                             poll_table *wait)
 110 {
 111         struct usb_mixer_interface *mixer = hw->private_data;
 112
 113         poll_wait(file, &mixer->rc_waitq, wait);
 114         return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
 115 }
 116
 117 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
 118 {
 119         struct snd_hwdep *hwdep;
 120         int err, len, i;
 121
 122         for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
 123                 if (rc_configs[i].usb_id == mixer->chip->usb_id)
 124                         break;
 125         if (i >= ARRAY_SIZE(rc_configs))
 126                 return 0;
 127         mixer->rc_cfg = &rc_configs[i];
 128
 129         len = mixer->rc_cfg->packet_length;
 130
 131         init_waitqueue_head(&mixer->rc_waitq);
 132         err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
 133         if (err < 0)
 134                 return err;
 135         snprintf(hwdep->name, sizeof(hwdep->name),
 136                  "%s remote control", mixer->chip->card->shortname);
 137         hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
 138         hwdep->private_data = mixer;
 139         hwdep->ops.read = snd_usb_sbrc_hwdep_read;
 140         hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
 141         hwdep->exclusive = 1;
 142
 143         mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
 144         if (!mixer->rc_urb)
 145                 return -ENOMEM;
 146         mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
 147         if (!mixer->rc_setup_packet) {
 148                 usb_free_urb(mixer->rc_urb);
 149                 mixer->rc_urb = NULL;
 150                 return -ENOMEM;
 151         }
 152         mixer->rc_setup_packet->bRequestType =
 153                 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
 154         mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
 155         mixer->rc_setup_packet->wValue = cpu_to_le16(0);
 156         mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
 157         mixer->rc_setup_packet->wLength = cpu_to_le16(len);
 158         usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
 159                              usb_rcvctrlpipe(mixer->chip->dev, 0),
 160                              (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
 161                              snd_usb_soundblaster_remote_complete, mixer);
 162         return 0;
 163 }
 164
 165 #define snd_audigy2nx_led_info          snd_ctl_boolean_mono_info
 166
 167 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 168 {
 169         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
 170         int index = kcontrol->private_value;
 171
 172         ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
 173         return 0;
 174 }
 175
 176 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 177 {
 178         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
 179         int index = kcontrol->private_value;
 180         int value = ucontrol->value.integer.value[0];
 181         int err, changed;
 182
 183         if (value > 1)
 184                 return -EINVAL;
 185         changed = value != mixer->audigy2nx_leds[index];
 186         if (mixer->chip->usb_id == USB_ID(0x041e, 0x3042))
 187                 err = snd_usb_ctl_msg(mixer->chip->dev,
 188                               usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
 189                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 190                               !value, 0, NULL, 0, 100);
 191         else
 192                 err = snd_usb_ctl_msg(mixer->chip->dev,
 193                               usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
 194                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 195                               value, index + 2, NULL, 0, 100);
 196         if (err < 0)
 197                 return err;
 198         mixer->audigy2nx_leds[index] = value;
 199         return changed;
 200 }
 201
 202 static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
 203         {
 204                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 205                 .name = "CMSS LED Switch",
 206                 .info = snd_audigy2nx_led_info,
 207                 .get = snd_audigy2nx_led_get,
 208                 .put = snd_audigy2nx_led_put,
 209                 .private_value = 0,
 210         },
 211         {
 212                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 213                 .name = "Power LED Switch",
 214                 .info = snd_audigy2nx_led_info,
 215                 .get = snd_audigy2nx_led_get,
 216                 .put = snd_audigy2nx_led_put,
 217                 .private_value = 1,
 218         },
 219         {
 220                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 221                 .name = "Dolby Digital LED Switch",
 222                 .info = snd_audigy2nx_led_info,
 223                 .get = snd_audigy2nx_led_get,
 224                 .put = snd_audigy2nx_led_put,
 225                 .private_value = 2,
 226         },
 227 };
 228
 229 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
 230 {
 231         int i, err;
 232
 233         for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
 234                 /* USB X-Fi S51 doesn't have a CMSS LED */
 235                 if ((mixer->chip->usb_id == USB_ID(0x041e, 0x3042)) && i == 0)
 236                         continue;
 237                 if (i > 1 && /* Live24ext has 2 LEDs only */
 238                         (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
 239                          mixer->chip->usb_id == USB_ID(0x041e, 0x3042) ||
 240                          mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
 241                         break;
 242                 err = snd_ctl_add(mixer->chip->card,
 243                                   snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
 244                 if (err < 0)
 245                         return err;
 246         }
 247         mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
 248         return 0;
 249 }
 250
 251 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
 252                                     struct snd_info_buffer *buffer)
 253 {
 254         static const struct sb_jack {
 255                 int unitid;
 256                 const char *name;
 257         }  jacks_audigy2nx[] = {
 258                 {4,  "dig in "},
 259                 {7,  "line in"},
 260                 {19, "spk out"},
 261                 {20, "hph out"},
 262                 {-1, NULL}
 263         }, jacks_live24ext[] = {
 264                 {4,  "line in"}, /* &1=Line, &2=Mic*/
 265                 {3,  "hph out"}, /* headphones */
 266                 {0,  "RC     "}, /* last command, 6 bytes see rc_config above */
 267                 {-1, NULL}
 268         };
 269         const struct sb_jack *jacks;
 270         struct usb_mixer_interface *mixer = entry->private_data;
 271         int i, err;
 272         u8 buf[3];
 273
 274         snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
 275         if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
 276                 jacks = jacks_audigy2nx;
 277         else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
 278                  mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
 279                 jacks = jacks_live24ext;
 280         else
 281                 return;
 282
 283         for (i = 0; jacks[i].name; ++i) {
 284                 snd_iprintf(buffer, "%s: ", jacks[i].name);
 285                 err = snd_usb_ctl_msg(mixer->chip->dev,
 286                                       usb_rcvctrlpipe(mixer->chip->dev, 0),
 287                                       UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
 288                                       USB_RECIP_INTERFACE, 0,
 289                                       jacks[i].unitid << 8, buf, 3, 100);
 290                 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
 291                         snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
 292                 else
 293                         snd_iprintf(buffer, "?\n");
 294         }
 295 }
 296
 297 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
 298                                    struct snd_ctl_elem_value *ucontrol)
 299 {
 300         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
 301
 302         ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
 303         return 0;
 304 }
 305
 306 static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
 307                                    struct snd_ctl_elem_value *ucontrol)
 308 {
 309         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
 310         u8 old_status, new_status;
 311         int err, changed;
 312
 313         old_status = mixer->xonar_u1_status;
 314         if (ucontrol->value.integer.value[0])
 315                 new_status = old_status | 0x02;
 316         else
 317                 new_status = old_status & ~0x02;
 318         changed = new_status != old_status;
 319         err = snd_usb_ctl_msg(mixer->chip->dev,
 320                               usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
 321                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
 322                               50, 0, &new_status, 1, 100);
 323         if (err < 0)
 324                 return err;
 325         mixer->xonar_u1_status = new_status;
 326         return changed;
 327 }
 328
 329 static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
 330         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 331         .name = "Digital Playback Switch",
 332         .info = snd_ctl_boolean_mono_info,
 333         .get = snd_xonar_u1_switch_get,
 334         .put = snd_xonar_u1_switch_put,
 335 };
 336
 337 static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
 338 {
 339         int err;
 340
 341         err = snd_ctl_add(mixer->chip->card,
 342                           snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
 343         if (err < 0)
 344                 return err;
 345         mixer->xonar_u1_status = 0x05;
 346         return 0;
 347 }
 348
 349 /* Native Instruments device quirks */
 350
 351 #define _MAKE_NI_CONTROL(bRequest,wIndex) ((bRequest) << 16 | (wIndex))
 352
 353 static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
 354                                              struct snd_ctl_elem_value *ucontrol)
 355 {
 356         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
 357         struct usb_device *dev = mixer->chip->dev;
 358         u8 bRequest = (kcontrol->private_value >> 16) & 0xff;
 359         u16 wIndex = kcontrol->private_value & 0xffff;
 360         u8 tmp;
 361
 362         int ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), bRequest,
 363                                   USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 364                                   0, cpu_to_le16(wIndex),
 365                                   &tmp, sizeof(tmp), 1000);
 366
 367         if (ret < 0) {
 368                 snd_printk(KERN_ERR
 369                            "unable to issue vendor read request (ret = %d)", ret);
 370                 return ret;
 371         }
 372
 373         ucontrol->value.integer.value[0] = tmp;
 374
 375         return 0;
 376 }
 377
 378 static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol,
 379                                              struct snd_ctl_elem_value *ucontrol)
 380 {
 381         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
 382         struct usb_device *dev = mixer->chip->dev;
 383         u8 bRequest = (kcontrol->private_value >> 16) & 0xff;
 384         u16 wIndex = kcontrol->private_value & 0xffff;
 385         u16 wValue = ucontrol->value.integer.value[0];
 386
 387         int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), bRequest,
 388                                   USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 389                                   cpu_to_le16(wValue), cpu_to_le16(wIndex),
 390                                   NULL, 0, 1000);
 391
 392         if (ret < 0) {
 393                 snd_printk(KERN_ERR
 394                            "unable to issue vendor write request (ret = %d)", ret);
 395                 return ret;
 396         }
 397
 398         return 0;
 399 }
 400
 401 static struct snd_kcontrol_new snd_nativeinstruments_ak6_mixers[] = {
 402         {
 403                 .name = "Direct Monitor Channel 1+2",
 404                 .private_value = _MAKE_NI_CONTROL(0x03, 0x03),
 405         },
 406         {
 407                 .name = "Direct Monitor Channel 3+4",
 408                 .private_value = _MAKE_NI_CONTROL(0x03, 0x05),
 409         },
 410 };
 411
 412 static struct snd_kcontrol_new snd_nativeinstruments_ta6_mixers[] = {
 413         {
 414                 .name = "Direct Thru Channel A",
 415                 .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
 416         },
 417         {
 418                 .name = "Direct Thru Channel B",
 419                 .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
 420         },
 421         {
 422                 .name = "Phono Input Channel A",
 423                 .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
 424         },
 425         {
 426                 .name = "Phono Input Channel B",
 427                 .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
 428         },
 429 };
 430
 431 static struct snd_kcontrol_new snd_nativeinstruments_ta10_mixers[] = {
 432         {
 433                 .name = "Direct Thru Channel A",
 434                 .private_value = _MAKE_NI_CONTROL(0x01, 0x03),
 435         },
 436         {
 437                 .name = "Direct Thru Channel B",
 438                 .private_value = _MAKE_NI_CONTROL(0x01, 0x05),
 439         },
 440         {
 441                 .name = "Direct Thru Channel C",
 442                 .private_value = _MAKE_NI_CONTROL(0x01, 0x07),
 443         },
 444         {
 445                 .name = "Direct Thru Channel D",
 446                 .private_value = _MAKE_NI_CONTROL(0x01, 0x09),
 447         },
 448         {
 449                 .name = "Phono Input Channel A",
 450                 .private_value = _MAKE_NI_CONTROL(0x02, 0x03),
 451         },
 452         {
 453                 .name = "Phono Input Channel B",
 454                 .private_value = _MAKE_NI_CONTROL(0x02, 0x05),
 455         },
 456         {
 457                 .name = "Phono Input Channel C",
 458                 .private_value = _MAKE_NI_CONTROL(0x02, 0x07),
 459         },
 460         {
 461                 .name = "Phono Input Channel D",
 462                 .private_value = _MAKE_NI_CONTROL(0x02, 0x09),
 463         },
 464 };
 465
 466 static int snd_nativeinstruments_create_mixer(struct usb_mixer_interface *mixer,
 467                                               const struct snd_kcontrol_new *kc,
 468                                               unsigned int count)
 469 {
 470         int i, err = 0;
 471         struct snd_kcontrol_new template = {
 472                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 473                 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 474                 .get = snd_nativeinstruments_control_get,
 475                 .put = snd_nativeinstruments_control_put,
 476                 .info = snd_ctl_boolean_mono_info,
 477         };
 478
 479         for (i = 0; i < count; i++) {
 480                 struct snd_kcontrol *c;
 481
 482                 template.name = kc[i].name;
 483                 template.private_value = kc[i].private_value;
 484
 485                 c = snd_ctl_new1(&template, mixer);
 486                 err = snd_ctl_add(mixer->chip->card, c);
 487
 488                 if (err < 0)
 489                         break;
 490         }
 491
 492         return err;
 493 }
 494
 495 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
 496                                unsigned char samplerate_id)
 497 {
 498         struct usb_mixer_interface *mixer;
 499         struct usb_mixer_elem_info *cval;
 500         int unitid = 12; /* SamleRate ExtensionUnit ID */
 501
 502         list_for_each_entry(mixer, &chip->mixer_list, list) {
 503                 cval = mixer->id_elems[unitid];
 504                 if (cval) {
 505                         snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,
 506                                                     cval->control << 8,
 507                                                     samplerate_id);
 508                         snd_usb_mixer_notify_id(mixer, unitid);
 509                 }
 510                 break;
 511         }
 512 }
 513
 514 int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
 515 {
 516         int err = 0;
 517         struct snd_info_entry *entry;
 518
 519         if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
 520                 return err;
 521
 522         switch (mixer->chip->usb_id) {
 523         case USB_ID(0x041e, 0x3020):
 524         case USB_ID(0x041e, 0x3040):
 525         case USB_ID(0x041e, 0x3042):
 526         case USB_ID(0x041e, 0x3048):
 527                 err = snd_audigy2nx_controls_create(mixer);
 528                 if (err < 0)
 529                         break;
 530                 if (!snd_card_proc_new(mixer->chip->card, "audigy2nx", &entry))
 531                         snd_info_set_text_ops(entry, mixer,
 532                                               snd_audigy2nx_proc_read);
 533                 break;
 534
 535         case USB_ID(0x0b05, 0x1739):
 536         case USB_ID(0x0b05, 0x1743):
 537                 err = snd_xonar_u1_controls_create(mixer);
 538                 break;
 539
 540         case USB_ID(0x17cc, 0x1001): /* Audio Kontrol 6 */
 541                 err = snd_nativeinstruments_create_mixer(mixer,
 542                                 snd_nativeinstruments_ak6_mixers,
 543                                 ARRAY_SIZE(snd_nativeinstruments_ak6_mixers));
 544                 break;
 545
 546         case USB_ID(0x17cc, 0x1011): /* Traktor Audio 6 */
 547                 err = snd_nativeinstruments_create_mixer(mixer,
 548                                 snd_nativeinstruments_ta6_mixers,
 549                                 ARRAY_SIZE(snd_nativeinstruments_ta6_mixers));
 550                 break;
 551
 552         case USB_ID(0x17cc, 0x1021): /* Traktor Audio 10 */
 553                 err = snd_nativeinstruments_create_mixer(mixer,
 554                                 snd_nativeinstruments_ta10_mixers,
 555                                 ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
 556                 break;
 557         }
 558
 559         return err;
 560 }
 561
 562 void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
 563                                     int unitid)
 564 {
 565         if (!mixer->rc_cfg)
 566                 return;
 567         /* unit ids specific to Extigy/Audigy 2 NX: */
 568         switch (unitid) {
 569         case 0: /* remote control */
 570                 mixer->rc_urb->dev = mixer->chip->dev;
 571                 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
 572                 break;
 573         case 4: /* digital in jack */
 574         case 7: /* line in jacks */
 575         case 19: /* speaker out jacks */
 576         case 20: /* headphones out jack */
 577                 break;
 578         /* live24ext: 4 = line-in jack */
 579         case 3: /* hp-out jack (may actuate Mute) */
 580                 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
 581                     mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
 582                         snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
 583                 break;
 584         default:
 585                 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
 586                 break;
 587         }
 588 }
 589