Pileus Git - ~andy/linux/blob - sound/usb/usbmixer.c

   1 /*
   2  *   (Tentative) USB Audio Driver for ALSA
   3  *
   4  *   Mixer control part
   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
  29 #include <sound/driver.h>
  30 #include <linux/bitops.h>
  31 #include <linux/init.h>
  32 #include <linux/list.h>
  33 #include <linux/slab.h>
  34 #include <linux/string.h>
  35 #include <linux/usb.h>
  36 #include <sound/core.h>
  37 #include <sound/control.h>
  38 #include <sound/hwdep.h>
  39 #include <sound/info.h>
  40
  41 #include "usbaudio.h"
  42
  43 /*
  44  */
  45
  46 /* ignore error from controls - for debugging */
  47 /* #define IGNORE_CTL_ERROR */
  48
  49 typedef struct usb_mixer_build mixer_build_t;
  50 typedef struct usb_audio_term usb_audio_term_t;
  51 typedef struct usb_mixer_elem_info usb_mixer_elem_info_t;
  52
  53
  54 struct usb_mixer_interface {
  55         snd_usb_audio_t *chip;
  56         unsigned int ctrlif;
  57         struct list_head list;
  58         unsigned int ignore_ctl_error;
  59         struct urb *urb;
  60         usb_mixer_elem_info_t **id_elems; /* array[256], indexed by unit id */
  61
  62         /* Sound Blaster remote control stuff */
  63         enum {
  64                 RC_NONE,
  65                 RC_EXTIGY,
  66                 RC_AUDIGY2NX,
  67         } rc_type;
  68         unsigned long rc_hwdep_open;
  69         u32 rc_code;
  70         wait_queue_head_t rc_waitq;
  71         struct urb *rc_urb;
  72         struct usb_ctrlrequest *rc_setup_packet;
  73         u8 rc_buffer[6];
  74
  75         u8 audigy2nx_leds[3];
  76 };
  77
  78
  79 struct usb_audio_term {
  80         int id;
  81         int type;
  82         int channels;
  83         unsigned int chconfig;
  84         int name;
  85 };
  86
  87 struct usbmix_name_map;
  88
  89 struct usb_mixer_build {
  90         snd_usb_audio_t *chip;
  91         struct usb_mixer_interface *mixer;
  92         unsigned char *buffer;
  93         unsigned int buflen;
  94         DECLARE_BITMAP(unitbitmap, 256);
  95         usb_audio_term_t oterm;
  96         const struct usbmix_name_map *map;
  97         const struct usbmix_selector_map *selector_map;
  98 };
  99
 100 struct usb_mixer_elem_info {
 101         struct usb_mixer_interface *mixer;
 102         usb_mixer_elem_info_t *next_id_elem; /* list of controls with same id */
 103         snd_ctl_elem_id_t *elem_id;
 104         unsigned int id;
 105         unsigned int control;   /* CS or ICN (high byte) */
 106         unsigned int cmask; /* channel mask bitmap: 0 = master */
 107         int channels;
 108         int val_type;
 109         int min, max, res;
 110         u8 initialized;
 111 };
 112
 113
 114 enum {
 115         USB_FEATURE_NONE = 0,
 116         USB_FEATURE_MUTE = 1,
 117         USB_FEATURE_VOLUME,
 118         USB_FEATURE_BASS,
 119         USB_FEATURE_MID,
 120         USB_FEATURE_TREBLE,
 121         USB_FEATURE_GEQ,
 122         USB_FEATURE_AGC,
 123         USB_FEATURE_DELAY,
 124         USB_FEATURE_BASSBOOST,
 125         USB_FEATURE_LOUDNESS
 126 };
 127
 128 enum {
 129         USB_MIXER_BOOLEAN,
 130         USB_MIXER_INV_BOOLEAN,
 131         USB_MIXER_S8,
 132         USB_MIXER_U8,
 133         USB_MIXER_S16,
 134         USB_MIXER_U16,
 135 };
 136
 137 enum {
 138         USB_PROC_UPDOWN = 1,
 139         USB_PROC_UPDOWN_SWITCH = 1,
 140         USB_PROC_UPDOWN_MODE_SEL = 2,
 141
 142         USB_PROC_PROLOGIC = 2,
 143         USB_PROC_PROLOGIC_SWITCH = 1,
 144         USB_PROC_PROLOGIC_MODE_SEL = 2,
 145
 146         USB_PROC_3DENH = 3,
 147         USB_PROC_3DENH_SWITCH = 1,
 148         USB_PROC_3DENH_SPACE = 2,
 149
 150         USB_PROC_REVERB = 4,
 151         USB_PROC_REVERB_SWITCH = 1,
 152         USB_PROC_REVERB_LEVEL = 2,
 153         USB_PROC_REVERB_TIME = 3,
 154         USB_PROC_REVERB_DELAY = 4,
 155
 156         USB_PROC_CHORUS = 5,
 157         USB_PROC_CHORUS_SWITCH = 1,
 158         USB_PROC_CHORUS_LEVEL = 2,
 159         USB_PROC_CHORUS_RATE = 3,
 160         USB_PROC_CHORUS_DEPTH = 4,
 161
 162         USB_PROC_DCR = 6,
 163         USB_PROC_DCR_SWITCH = 1,
 164         USB_PROC_DCR_RATIO = 2,
 165         USB_PROC_DCR_MAX_AMP = 3,
 166         USB_PROC_DCR_THRESHOLD = 4,
 167         USB_PROC_DCR_ATTACK = 5,
 168         USB_PROC_DCR_RELEASE = 6,
 169 };
 170
 171 #define MAX_CHANNELS    10      /* max logical channels */
 172
 173
 174 /*
 175  * manual mapping of mixer names
 176  * if the mixer topology is too complicated and the parsed names are
 177  * ambiguous, add the entries in usbmixer_maps.c.
 178  */
 179 #include "usbmixer_maps.c"
 180
 181 /* get the mapped name if the unit matches */
 182 static int check_mapped_name(mixer_build_t *state, int unitid, int control, char *buf, int buflen)
 183 {
 184         const struct usbmix_name_map *p;
 185
 186         if (! state->map)
 187                 return 0;
 188
 189         for (p = state->map; p->id; p++) {
 190                 if (p->id == unitid && p->name &&
 191                     (! control || ! p->control || control == p->control)) {
 192                         buflen--;
 193                         return strlcpy(buf, p->name, buflen);
 194                 }
 195         }
 196         return 0;
 197 }
 198
 199 /* check whether the control should be ignored */
 200 static int check_ignored_ctl(mixer_build_t *state, int unitid, int control)
 201 {
 202         const struct usbmix_name_map *p;
 203
 204         if (! state->map)
 205                 return 0;
 206         for (p = state->map; p->id; p++) {
 207                 if (p->id == unitid && ! p->name &&
 208                     (! control || ! p->control || control == p->control)) {
 209                         // printk("ignored control %d:%d\n", unitid, control);
 210                         return 1;
 211                 }
 212         }
 213         return 0;
 214 }
 215
 216 /* get the mapped selector source name */
 217 static int check_mapped_selector_name(mixer_build_t *state, int unitid,
 218                                       int index, char *buf, int buflen)
 219 {
 220         const struct usbmix_selector_map *p;
 221
 222         if (! state->selector_map)
 223                 return 0;
 224         for (p = state->selector_map; p->id; p++) {
 225                 if (p->id == unitid && index < p->count)
 226                         return strlcpy(buf, p->names[index], buflen);
 227         }
 228         return 0;
 229 }
 230
 231 /*
 232  * find an audio control unit with the given unit id
 233  */
 234 static void *find_audio_control_unit(mixer_build_t *state, unsigned char unit)
 235 {
 236         unsigned char *p;
 237
 238         p = NULL;
 239         while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
 240                                       USB_DT_CS_INTERFACE)) != NULL) {
 241                 if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
 242                         return p;
 243         }
 244         return NULL;
 245 }
 246
 247
 248 /*
 249  * copy a string with the given id
 250  */
 251 static int snd_usb_copy_string_desc(mixer_build_t *state, int index, char *buf, int maxlen)
 252 {
 253         int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
 254         buf[len] = 0;
 255         return len;
 256 }
 257
 258 /*
 259  * convert from the byte/word on usb descriptor to the zero-based integer
 260  */
 261 static int convert_signed_value(usb_mixer_elem_info_t *cval, int val)
 262 {
 263         switch (cval->val_type) {
 264         case USB_MIXER_BOOLEAN:
 265                 return !!val;
 266         case USB_MIXER_INV_BOOLEAN:
 267                 return !val;
 268         case USB_MIXER_U8:
 269                 val &= 0xff;
 270                 break;
 271         case USB_MIXER_S8:
 272                 val &= 0xff;
 273                 if (val >= 0x80)
 274                         val -= 0x100;
 275                 break;
 276         case USB_MIXER_U16:
 277                 val &= 0xffff;
 278                 break;
 279         case USB_MIXER_S16:
 280                 val &= 0xffff;
 281                 if (val >= 0x8000)
 282                         val -= 0x10000;
 283                 break;
 284         }
 285         return val;
 286 }
 287
 288 /*
 289  * convert from the zero-based int to the byte/word for usb descriptor
 290  */
 291 static int convert_bytes_value(usb_mixer_elem_info_t *cval, int val)
 292 {
 293         switch (cval->val_type) {
 294         case USB_MIXER_BOOLEAN:
 295                 return !!val;
 296         case USB_MIXER_INV_BOOLEAN:
 297                 return !val;
 298         case USB_MIXER_S8:
 299         case USB_MIXER_U8:
 300                 return val & 0xff;
 301         case USB_MIXER_S16:
 302         case USB_MIXER_U16:
 303                 return val & 0xffff;
 304         }
 305         return 0; /* not reached */
 306 }
 307
 308 static int get_relative_value(usb_mixer_elem_info_t *cval, int val)
 309 {
 310         if (! cval->res)
 311                 cval->res = 1;
 312         if (val < cval->min)
 313                 return 0;
 314         else if (val > cval->max)
 315                 return (cval->max - cval->min) / cval->res;
 316         else
 317                 return (val - cval->min) / cval->res;
 318 }
 319
 320 static int get_abs_value(usb_mixer_elem_info_t *cval, int val)
 321 {
 322         if (val < 0)
 323                 return cval->min;
 324         if (! cval->res)
 325                 cval->res = 1;
 326         val *= cval->res;
 327         val += cval->min;
 328         if (val > cval->max)
 329                 return cval->max;
 330         return val;
 331 }
 332
 333
 334 /*
 335  * retrieve a mixer value
 336  */
 337
 338 static int get_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int *value_ret)
 339 {
 340         unsigned char buf[2];
 341         int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
 342         int timeout = 10;
 343
 344         while (timeout-- > 0) {
 345                 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
 346                                     usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
 347                                     request,
 348                                     USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
 349                                     validx, cval->mixer->ctrlif | (cval->id << 8),
 350                                     buf, val_len, 100) >= 0) {
 351                         *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
 352                         return 0;
 353                 }
 354         }
 355         snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
 356                     request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
 357         return -EINVAL;
 358 }
 359
 360 static int get_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int *value)
 361 {
 362         return get_ctl_value(cval, GET_CUR, validx, value);
 363 }
 364
 365 /* channel = 0: master, 1 = first channel */
 366 inline static int get_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int *value)
 367 {
 368         return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value);
 369 }
 370
 371 /*
 372  * set a mixer value
 373  */
 374
 375 static int set_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int value_set)
 376 {
 377         unsigned char buf[2];
 378         int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
 379         int timeout = 10;
 380
 381         value_set = convert_bytes_value(cval, value_set);
 382         buf[0] = value_set & 0xff;
 383         buf[1] = (value_set >> 8) & 0xff;
 384         while (timeout -- > 0)
 385                 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
 386                                     usb_sndctrlpipe(cval->mixer->chip->dev, 0),
 387                                     request,
 388                                     USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
 389                                     validx, cval->mixer->ctrlif | (cval->id << 8),
 390                                     buf, val_len, 100) >= 0)
 391                         return 0;
 392         snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
 393                     request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
 394         return -EINVAL;
 395 }
 396
 397 static int set_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int value)
 398 {
 399         return set_ctl_value(cval, SET_CUR, validx, value);
 400 }
 401
 402 inline static int set_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int value)
 403 {
 404         return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value);
 405 }
 406
 407
 408 /*
 409  * parser routines begin here...
 410  */
 411
 412 static int parse_audio_unit(mixer_build_t *state, int unitid);
 413
 414
 415 /*
 416  * check if the input/output channel routing is enabled on the given bitmap.
 417  * used for mixer unit parser
 418  */
 419 static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
 420 {
 421         int idx = ich * num_outs + och;
 422         return bmap[idx >> 3] & (0x80 >> (idx & 7));
 423 }
 424
 425
 426 /*
 427  * add an alsa control element
 428  * search and increment the index until an empty slot is found.
 429  *
 430  * if failed, give up and free the control instance.
 431  */
 432
 433 static int add_control_to_empty(mixer_build_t *state, snd_kcontrol_t *kctl)
 434 {
 435         usb_mixer_elem_info_t *cval = kctl->private_data;
 436         int err;
 437
 438         while (snd_ctl_find_id(state->chip->card, &kctl->id))
 439                 kctl->id.index++;
 440         if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
 441                 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
 442                 snd_ctl_free_one(kctl);
 443                 return err;
 444         }
 445         cval->elem_id = &kctl->id;
 446         cval->next_id_elem = state->mixer->id_elems[cval->id];
 447         state->mixer->id_elems[cval->id] = cval;
 448         return 0;
 449 }
 450
 451
 452 /*
 453  * get a terminal name string
 454  */
 455
 456 static struct iterm_name_combo {
 457         int type;
 458         char *name;
 459 } iterm_names[] = {
 460         { 0x0300, "Output" },
 461         { 0x0301, "Speaker" },
 462         { 0x0302, "Headphone" },
 463         { 0x0303, "HMD Audio" },
 464         { 0x0304, "Desktop Speaker" },
 465         { 0x0305, "Room Speaker" },
 466         { 0x0306, "Com Speaker" },
 467         { 0x0307, "LFE" },
 468         { 0x0600, "External In" },
 469         { 0x0601, "Analog In" },
 470         { 0x0602, "Digital In" },
 471         { 0x0603, "Line" },
 472         { 0x0604, "Legacy In" },
 473         { 0x0605, "IEC958 In" },
 474         { 0x0606, "1394 DA Stream" },
 475         { 0x0607, "1394 DV Stream" },
 476         { 0x0700, "Embedded" },
 477         { 0x0701, "Noise Source" },
 478         { 0x0702, "Equalization Noise" },
 479         { 0x0703, "CD" },
 480         { 0x0704, "DAT" },
 481         { 0x0705, "DCC" },
 482         { 0x0706, "MiniDisk" },
 483         { 0x0707, "Analog Tape" },
 484         { 0x0708, "Phonograph" },
 485         { 0x0709, "VCR Audio" },
 486         { 0x070a, "Video Disk Audio" },
 487         { 0x070b, "DVD Audio" },
 488         { 0x070c, "TV Tuner Audio" },
 489         { 0x070d, "Satellite Rec Audio" },
 490         { 0x070e, "Cable Tuner Audio" },
 491         { 0x070f, "DSS Audio" },
 492         { 0x0710, "Radio Receiver" },
 493         { 0x0711, "Radio Transmitter" },
 494         { 0x0712, "Multi-Track Recorder" },
 495         { 0x0713, "Synthesizer" },
 496         { 0 },
 497 };
 498
 499 static int get_term_name(mixer_build_t *state, usb_audio_term_t *iterm,
 500                          unsigned char *name, int maxlen, int term_only)
 501 {
 502         struct iterm_name_combo *names;
 503
 504         if (iterm->name)
 505                 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
 506
 507         /* virtual type - not a real terminal */
 508         if (iterm->type >> 16) {
 509                 if (term_only)
 510                         return 0;
 511                 switch (iterm->type >> 16) {
 512                 case SELECTOR_UNIT:
 513                         strcpy(name, "Selector"); return 8;
 514                 case PROCESSING_UNIT:
 515                         strcpy(name, "Process Unit"); return 12;
 516                 case EXTENSION_UNIT:
 517                         strcpy(name, "Ext Unit"); return 8;
 518                 case MIXER_UNIT:
 519                         strcpy(name, "Mixer"); return 5;
 520                 default:
 521                         return sprintf(name, "Unit %d", iterm->id);
 522                 }
 523         }
 524
 525         switch (iterm->type & 0xff00) {
 526         case 0x0100:
 527                 strcpy(name, "PCM"); return 3;
 528         case 0x0200:
 529                 strcpy(name, "Mic"); return 3;
 530         case 0x0400:
 531                 strcpy(name, "Headset"); return 7;
 532         case 0x0500:
 533                 strcpy(name, "Phone"); return 5;
 534         }
 535
 536         for (names = iterm_names; names->type; names++)
 537                 if (names->type == iterm->type) {
 538                         strcpy(name, names->name);
 539                         return strlen(names->name);
 540                 }
 541         return 0;
 542 }
 543
 544
 545 /*
 546  * parse the source unit recursively until it reaches to a terminal
 547  * or a branched unit.
 548  */
 549 static int check_input_term(mixer_build_t *state, int id, usb_audio_term_t *term)
 550 {
 551         unsigned char *p1;
 552
 553         memset(term, 0, sizeof(*term));
 554         while ((p1 = find_audio_control_unit(state, id)) != NULL) {
 555                 term->id = id;
 556                 switch (p1[2]) {
 557                 case INPUT_TERMINAL:
 558                         term->type = combine_word(p1 + 4);
 559                         term->channels = p1[7];
 560                         term->chconfig = combine_word(p1 + 8);
 561                         term->name = p1[11];
 562                         return 0;
 563                 case FEATURE_UNIT:
 564                         id = p1[4];
 565                         break; /* continue to parse */
 566                 case MIXER_UNIT:
 567                         term->type = p1[2] << 16; /* virtual type */
 568                         term->channels = p1[5 + p1[4]];
 569                         term->chconfig = combine_word(p1 + 6 + p1[4]);
 570                         term->name = p1[p1[0] - 1];
 571                         return 0;
 572                 case SELECTOR_UNIT:
 573                         /* call recursively to retrieve the channel info */
 574                         if (check_input_term(state, p1[5], term) < 0)
 575                                 return -ENODEV;
 576                         term->type = p1[2] << 16; /* virtual type */
 577                         term->id = id;
 578                         term->name = p1[9 + p1[0] - 1];
 579                         return 0;
 580                 case PROCESSING_UNIT:
 581                 case EXTENSION_UNIT:
 582                         if (p1[6] == 1) {
 583                                 id = p1[7];
 584                                 break; /* continue to parse */
 585                         }
 586                         term->type = p1[2] << 16; /* virtual type */
 587                         term->channels = p1[7 + p1[6]];
 588                         term->chconfig = combine_word(p1 + 8 + p1[6]);
 589                         term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
 590                         return 0;
 591                 default:
 592                         return -ENODEV;
 593                 }
 594         }
 595         return -ENODEV;
 596 }
 597
 598
 599 /*
 600  * Feature Unit
 601  */
 602
 603 /* feature unit control information */
 604 struct usb_feature_control_info {
 605         const char *name;
 606         unsigned int type;      /* control type (mute, volume, etc.) */
 607 };
 608
 609 static struct usb_feature_control_info audio_feature_info[] = {
 610         { "Mute",               USB_MIXER_INV_BOOLEAN },
 611         { "Volume",             USB_MIXER_S16 },
 612         { "Tone Control - Bass",        USB_MIXER_S8 },
 613         { "Tone Control - Mid",         USB_MIXER_S8 },
 614         { "Tone Control - Treble",      USB_MIXER_S8 },
 615         { "Graphic Equalizer",          USB_MIXER_S8 }, /* FIXME: not implemeted yet */
 616         { "Auto Gain Control",  USB_MIXER_BOOLEAN },
 617         { "Delay Control",      USB_MIXER_U16 },
 618         { "Bass Boost",         USB_MIXER_BOOLEAN },
 619         { "Loudness",           USB_MIXER_BOOLEAN },
 620 };
 621
 622
 623 /* private_free callback */
 624 static void usb_mixer_elem_free(snd_kcontrol_t *kctl)
 625 {
 626         if (kctl->private_data) {
 627                 kfree(kctl->private_data);
 628                 kctl->private_data = NULL;
 629         }
 630 }
 631
 632
 633 /*
 634  * interface to ALSA control for feature/mixer units
 635  */
 636
 637 /*
 638  * retrieve the minimum and maximum values for the specified control
 639  */
 640 static int get_min_max(usb_mixer_elem_info_t *cval, int default_min)
 641 {
 642         /* for failsafe */
 643         cval->min = default_min;
 644         cval->max = cval->min + 1;
 645         cval->res = 1;
 646
 647         if (cval->val_type == USB_MIXER_BOOLEAN ||
 648             cval->val_type == USB_MIXER_INV_BOOLEAN) {
 649                 cval->initialized = 1;
 650         } else {
 651                 int minchn = 0;
 652                 if (cval->cmask) {
 653                         int i;
 654                         for (i = 0; i < MAX_CHANNELS; i++)
 655                                 if (cval->cmask & (1 << i)) {
 656                                         minchn = i + 1;
 657                                         break;
 658                                 }
 659                 }
 660                 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
 661                     get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
 662                         snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
 663                                    cval->id, cval->mixer->ctrlif, cval->control, cval->id);
 664                         return -EINVAL;
 665                 }
 666                 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
 667                         cval->res = 1;
 668                 } else {
 669                         int last_valid_res = cval->res;
 670
 671                         while (cval->res > 1) {
 672                                 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
 673                                         break;
 674                                 cval->res /= 2;
 675                         }
 676                         if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
 677                                 cval->res = last_valid_res;
 678                 }
 679                 if (cval->res == 0)
 680                         cval->res = 1;
 681                 cval->initialized = 1;
 682         }
 683         return 0;
 684 }
 685
 686
 687 /* get a feature/mixer unit info */
 688 static int mixer_ctl_feature_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
 689 {
 690         usb_mixer_elem_info_t *cval = kcontrol->private_data;
 691
 692         if (cval->val_type == USB_MIXER_BOOLEAN ||
 693             cval->val_type == USB_MIXER_INV_BOOLEAN)
 694                 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 695         else
 696                 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 697         uinfo->count = cval->channels;
 698         if (cval->val_type == USB_MIXER_BOOLEAN ||
 699             cval->val_type == USB_MIXER_INV_BOOLEAN) {
 700                 uinfo->value.integer.min = 0;
 701                 uinfo->value.integer.max = 1;
 702         } else {
 703                 if (! cval->initialized)
 704                         get_min_max(cval,  0);
 705                 uinfo->value.integer.min = 0;
 706                 uinfo->value.integer.max = (cval->max - cval->min) / cval->res;
 707         }
 708         return 0;
 709 }
 710
 711 /* get the current value from feature/mixer unit */
 712 static int mixer_ctl_feature_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
 713 {
 714         usb_mixer_elem_info_t *cval = kcontrol->private_data;
 715         int c, cnt, val, err;
 716
 717         if (cval->cmask) {
 718                 cnt = 0;
 719                 for (c = 0; c < MAX_CHANNELS; c++) {
 720                         if (cval->cmask & (1 << c)) {
 721                                 err = get_cur_mix_value(cval, c + 1, &val);
 722                                 if (err < 0) {
 723                                         if (cval->mixer->ignore_ctl_error) {
 724                                                 ucontrol->value.integer.value[0] = cval->min;
 725                                                 return 0;
 726                                         }
 727                                         snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err);
 728                                         return err;
 729                                 }
 730                                 val = get_relative_value(cval, val);
 731                                 ucontrol->value.integer.value[cnt] = val;
 732                                 cnt++;
 733                         }
 734                 }
 735         } else {
 736                 /* master channel */
 737                 err = get_cur_mix_value(cval, 0, &val);
 738                 if (err < 0) {
 739                         if (cval->mixer->ignore_ctl_error) {
 740                                 ucontrol->value.integer.value[0] = cval->min;
 741                                 return 0;
 742                         }
 743                         snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err);
 744                         return err;
 745                 }
 746                 val = get_relative_value(cval, val);
 747                 ucontrol->value.integer.value[0] = val;
 748         }
 749         return 0;
 750 }
 751
 752 /* put the current value to feature/mixer unit */
 753 static int mixer_ctl_feature_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
 754 {
 755         usb_mixer_elem_info_t *cval = kcontrol->private_data;
 756         int c, cnt, val, oval, err;
 757         int changed = 0;
 758
 759         if (cval->cmask) {
 760                 cnt = 0;
 761                 for (c = 0; c < MAX_CHANNELS; c++) {
 762                         if (cval->cmask & (1 << c)) {
 763                                 err = get_cur_mix_value(cval, c + 1, &oval);
 764                                 if (err < 0) {
 765                                         if (cval->mixer->ignore_ctl_error)
 766                                                 return 0;
 767                                         return err;
 768                                 }
 769                                 val = ucontrol->value.integer.value[cnt];
 770                                 val = get_abs_value(cval, val);
 771                                 if (oval != val) {
 772                                         set_cur_mix_value(cval, c + 1, val);
 773                                         changed = 1;
 774                                 }
 775                                 get_cur_mix_value(cval, c + 1, &val);
 776                                 cnt++;
 777                         }
 778                 }
 779         } else {
 780                 /* master channel */
 781                 err = get_cur_mix_value(cval, 0, &oval);
 782                 if (err < 0 && cval->mixer->ignore_ctl_error)
 783                         return 0;
 784                 if (err < 0)
 785                         return err;
 786                 val = ucontrol->value.integer.value[0];
 787                 val = get_abs_value(cval, val);
 788                 if (val != oval) {
 789                         set_cur_mix_value(cval, 0, val);
 790                         changed = 1;
 791                 }
 792         }
 793         return changed;
 794 }
 795
 796 static snd_kcontrol_new_t usb_feature_unit_ctl = {
 797         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 798         .name = "", /* will be filled later manually */
 799         .info = mixer_ctl_feature_info,
 800         .get = mixer_ctl_feature_get,
 801         .put = mixer_ctl_feature_put,
 802 };
 803
 804
 805 /*
 806  * build a feature control
 807  */
 808
 809 static void build_feature_ctl(mixer_build_t *state, unsigned char *desc,
 810                               unsigned int ctl_mask, int control,
 811                               usb_audio_term_t *iterm, int unitid)
 812 {
 813         unsigned int len = 0;
 814         int mapped_name = 0;
 815         int nameid = desc[desc[0] - 1];
 816         snd_kcontrol_t *kctl;
 817         usb_mixer_elem_info_t *cval;
 818
 819         control++; /* change from zero-based to 1-based value */
 820
 821         if (control == USB_FEATURE_GEQ) {
 822                 /* FIXME: not supported yet */
 823                 return;
 824         }
 825
 826         if (check_ignored_ctl(state, unitid, control))
 827                 return;
 828
 829         cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
 830         if (! cval) {
 831                 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
 832                 return;
 833         }
 834         cval->mixer = state->mixer;
 835         cval->id = unitid;
 836         cval->control = control;
 837         cval->cmask = ctl_mask;
 838         cval->val_type = audio_feature_info[control-1].type;
 839         if (ctl_mask == 0)
 840                 cval->channels = 1;     /* master channel */
 841         else {
 842                 int i, c = 0;
 843                 for (i = 0; i < 16; i++)
 844                         if (ctl_mask & (1 << i))
 845                                 c++;
 846                 cval->channels = c;
 847         }
 848
 849         /* get min/max values */
 850         get_min_max(cval, 0);
 851
 852         kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
 853         if (! kctl) {
 854                 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
 855                 kfree(cval);
 856                 return;
 857         }
 858         kctl->private_free = usb_mixer_elem_free;
 859
 860         len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
 861         mapped_name = len != 0;
 862         if (! len && nameid)
 863                 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
 864
 865         switch (control) {
 866         case USB_FEATURE_MUTE:
 867         case USB_FEATURE_VOLUME:
 868                 /* determine the control name.  the rule is:
 869                  * - if a name id is given in descriptor, use it.
 870                  * - if the connected input can be determined, then use the name
 871                  *   of terminal type.
 872                  * - if the connected output can be determined, use it.
 873                  * - otherwise, anonymous name.
 874                  */
 875                 if (! len) {
 876                         len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
 877                         if (! len)
 878                                 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
 879                         if (! len)
 880                                 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
 881                                                "Feature %d", unitid);
 882                 }
 883                 /* determine the stream direction:
 884                  * if the connected output is USB stream, then it's likely a
 885                  * capture stream.  otherwise it should be playback (hopefully :)
 886                  */
 887                 if (! mapped_name && ! (state->oterm.type >> 16)) {
 888                         if ((state->oterm.type & 0xff00) == 0x0100) {
 889                                 len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name));
 890                         } else {
 891                                 len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name));
 892                         }
 893                 }
 894                 strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
 895                         sizeof(kctl->id.name));
 896                 break;
 897
 898         default:
 899                 if (! len)
 900                         strlcpy(kctl->id.name, audio_feature_info[control-1].name,
 901                                 sizeof(kctl->id.name));
 902                 break;
 903         }
 904
 905         /* quirk for UDA1321/N101 */
 906         /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
 907         /* is not very clear from datasheets */
 908         /* I hope that the min value is -15360 for newer firmware --jk */
 909         switch (state->chip->usb_id) {
 910         case USB_ID(0x0471, 0x0101):
 911         case USB_ID(0x0471, 0x0104):
 912         case USB_ID(0x0471, 0x0105):
 913         case USB_ID(0x0672, 0x1041):
 914                 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
 915                     cval->min == -15616) {
 916                         snd_printk("using volume control quirk for the UDA1321/N101 chip\n");
 917                         cval->max = -256;
 918                 }
 919         }
 920
 921         snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
 922                     cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
 923         add_control_to_empty(state, kctl);
 924 }
 925
 926
 927
 928 /*
 929  * parse a feature unit
 930  *
 931  * most of controlls are defined here.
 932  */
 933 static int parse_audio_feature_unit(mixer_build_t *state, int unitid, unsigned char *ftr)
 934 {
 935         int channels, i, j;
 936         usb_audio_term_t iterm;
 937         unsigned int master_bits, first_ch_bits;
 938         int err, csize;
 939
 940         if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
 941                 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
 942                 return -EINVAL;
 943         }
 944
 945         /* parse the source unit */
 946         if ((err = parse_audio_unit(state, ftr[4])) < 0)
 947                 return err;
 948
 949         /* determine the input source type and name */
 950         if (check_input_term(state, ftr[4], &iterm) < 0)
 951                 return -EINVAL;
 952
 953         channels = (ftr[0] - 7) / csize - 1;
 954
 955         master_bits = snd_usb_combine_bytes(ftr + 6, csize);
 956         if (channels > 0)
 957                 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
 958         else
 959                 first_ch_bits = 0;
 960         /* check all control types */
 961         for (i = 0; i < 10; i++) {
 962                 unsigned int ch_bits = 0;
 963                 for (j = 0; j < channels; j++) {
 964                         unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize);
 965                         if (mask & (1 << i))
 966                                 ch_bits |= (1 << j);
 967                 }
 968                 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
 969                         build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid);
 970                 if (master_bits & (1 << i))
 971                         build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
 972         }
 973
 974         return 0;
 975 }
 976
 977
 978 /*
 979  * Mixer Unit
 980  */
 981
 982 /*
 983  * build a mixer unit control
 984  *
 985  * the callbacks are identical with feature unit.
 986  * input channel number (zero based) is given in control field instead.
 987  */
 988
 989 static void build_mixer_unit_ctl(mixer_build_t *state, unsigned char *desc,
 990                                  int in_pin, int in_ch, int unitid,
 991                                  usb_audio_term_t *iterm)
 992 {
 993         usb_mixer_elem_info_t *cval;
 994         unsigned int input_pins = desc[4];
 995         unsigned int num_outs = desc[5 + input_pins];
 996         unsigned int i, len;
 997         snd_kcontrol_t *kctl;
 998
 999         if (check_ignored_ctl(state, unitid, 0))
1000                 return;
1001
1002         cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1003         if (! cval)
1004                 return;
1005
1006         cval->mixer = state->mixer;
1007         cval->id = unitid;
1008         cval->control = in_ch + 1; /* based on 1 */
1009         cval->val_type = USB_MIXER_S16;
1010         for (i = 0; i < num_outs; i++) {
1011                 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1012                         cval->cmask |= (1 << i);
1013                         cval->channels++;
1014                 }
1015         }
1016
1017         /* get min/max values */
1018         get_min_max(cval, 0);
1019
1020         kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1021         if (! kctl) {
1022                 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1023                 kfree(cval);
1024                 return;
1025         }
1026         kctl->private_free = usb_mixer_elem_free;
1027
1028         len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1029         if (! len)
1030                 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1031         if (! len)
1032                 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1033         strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name));
1034
1035         snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1036                     cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1037         add_control_to_empty(state, kctl);
1038 }
1039
1040
1041 /*
1042  * parse a mixer unit
1043  */
1044 static int parse_audio_mixer_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1045 {
1046         usb_audio_term_t iterm;
1047         int input_pins, num_ins, num_outs;
1048         int pin, ich, err;
1049
1050         if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1051                 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1052                 return -EINVAL;
1053         }
1054         /* no bmControls field (e.g. Maya44) -> ignore */
1055         if (desc[0] <= 10 + input_pins) {
1056                 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1057                 return 0;
1058         }
1059
1060         num_ins = 0;
1061         ich = 0;
1062         for (pin = 0; pin < input_pins; pin++) {
1063                 err = parse_audio_unit(state, desc[5 + pin]);
1064                 if (err < 0)
1065                         return err;
1066                 err = check_input_term(state, desc[5 + pin], &iterm);
1067                 if (err < 0)
1068                         return err;
1069                 num_ins += iterm.channels;
1070                 for (; ich < num_ins; ++ich) {
1071                         int och, ich_has_controls = 0;
1072
1073                         for (och = 0; och < num_outs; ++och) {
1074                                 if (check_matrix_bitmap(desc + 9 + input_pins,
1075                                                         ich, och, num_outs)) {
1076                                         ich_has_controls = 1;
1077                                         break;
1078                                 }
1079                         }
1080                         if (ich_has_controls)
1081                                 build_mixer_unit_ctl(state, desc, pin, ich,
1082                                                      unitid, &iterm);
1083                 }
1084         }
1085         return 0;
1086 }
1087
1088
1089 /*
1090  * Processing Unit / Extension Unit
1091  */
1092
1093 /* get callback for processing/extension unit */
1094 static int mixer_ctl_procunit_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1095 {
1096         usb_mixer_elem_info_t *cval = kcontrol->private_data;
1097         int err, val;
1098
1099         err = get_cur_ctl_value(cval, cval->control << 8, &val);
1100         if (err < 0 && cval->mixer->ignore_ctl_error) {
1101                 ucontrol->value.integer.value[0] = cval->min;
1102                 return 0;
1103         }
1104         if (err < 0)
1105                 return err;
1106         val = get_relative_value(cval, val);
1107         ucontrol->value.integer.value[0] = val;
1108         return 0;
1109 }
1110
1111 /* put callback for processing/extension unit */
1112 static int mixer_ctl_procunit_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1113 {
1114         usb_mixer_elem_info_t *cval = kcontrol->private_data;
1115         int val, oval, err;
1116
1117         err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1118         if (err < 0) {
1119                 if (cval->mixer->ignore_ctl_error)
1120                         return 0;
1121                 return err;
1122         }
1123         val = ucontrol->value.integer.value[0];
1124         val = get_abs_value(cval, val);
1125         if (val != oval) {
1126                 set_cur_ctl_value(cval, cval->control << 8, val);
1127                 return 1;
1128         }
1129         return 0;
1130 }
1131
1132 /* alsa control interface for processing/extension unit */
1133 static snd_kcontrol_new_t mixer_procunit_ctl = {
1134         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1135         .name = "", /* will be filled later */
1136         .info = mixer_ctl_feature_info,
1137         .get = mixer_ctl_procunit_get,
1138         .put = mixer_ctl_procunit_put,
1139 };
1140
1141
1142 /*
1143  * predefined data for processing units
1144  */
1145 struct procunit_value_info {
1146         int control;
1147         char *suffix;
1148         int val_type;
1149         int min_value;
1150 };
1151
1152 struct procunit_info {
1153         int type;
1154         char *name;
1155         struct procunit_value_info *values;
1156 };
1157
1158 static struct procunit_value_info updown_proc_info[] = {
1159         { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1160         { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1161         { 0 }
1162 };
1163 static struct procunit_value_info prologic_proc_info[] = {
1164         { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1165         { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1166         { 0 }
1167 };
1168 static struct procunit_value_info threed_enh_proc_info[] = {
1169         { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1170         { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1171         { 0 }
1172 };
1173 static struct procunit_value_info reverb_proc_info[] = {
1174         { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1175         { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1176         { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1177         { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1178         { 0 }
1179 };
1180 static struct procunit_value_info chorus_proc_info[] = {
1181         { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1182         { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1183         { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1184         { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1185         { 0 }
1186 };
1187 static struct procunit_value_info dcr_proc_info[] = {
1188         { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1189         { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1190         { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1191         { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1192         { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1193         { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1194         { 0 }
1195 };
1196
1197 static struct procunit_info procunits[] = {
1198         { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1199         { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1200         { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1201         { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1202         { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1203         { USB_PROC_DCR, "DCR", dcr_proc_info },
1204         { 0 },
1205 };
1206
1207 /*
1208  * build a processing/extension unit
1209  */
1210 static int build_audio_procunit(mixer_build_t *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1211 {
1212         int num_ins = dsc[6];
1213         usb_mixer_elem_info_t *cval;
1214         snd_kcontrol_t *kctl;
1215         int i, err, nameid, type, len;
1216         struct procunit_info *info;
1217         struct procunit_value_info *valinfo;
1218         static struct procunit_value_info default_value_info[] = {
1219                 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1220                 { 0 }
1221         };
1222         static struct procunit_info default_info = {
1223                 0, NULL, default_value_info
1224         };
1225
1226         if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1227                 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1228                 return -EINVAL;
1229         }
1230
1231         for (i = 0; i < num_ins; i++) {
1232                 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1233                         return err;
1234         }
1235
1236         type = combine_word(&dsc[4]);
1237         for (info = list; info && info->type; info++)
1238                 if (info->type == type)
1239                         break;
1240         if (! info || ! info->type)
1241                 info = &default_info;
1242
1243         for (valinfo = info->values; valinfo->control; valinfo++) {
1244                 /* FIXME: bitmap might be longer than 8bit */
1245                 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1246                         continue;
1247                 if (check_ignored_ctl(state, unitid, valinfo->control))
1248                         continue;
1249                 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1250                 if (! cval) {
1251                         snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1252                         return -ENOMEM;
1253                 }
1254                 cval->mixer = state->mixer;
1255                 cval->id = unitid;
1256                 cval->control = valinfo->control;
1257                 cval->val_type = valinfo->val_type;
1258                 cval->channels = 1;
1259
1260                 /* get min/max values */
1261                 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1262                         /* FIXME: hard-coded */
1263                         cval->min = 1;
1264                         cval->max = dsc[15];
1265                         cval->res = 1;
1266                         cval->initialized = 1;
1267                 } else
1268                         get_min_max(cval, valinfo->min_value);
1269
1270                 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1271                 if (! kctl) {
1272                         snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1273                         kfree(cval);
1274                         return -ENOMEM;
1275                 }
1276                 kctl->private_free = usb_mixer_elem_free;
1277
1278                 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
1279                         ;
1280                 else if (info->name)
1281                         strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1282                 else {
1283                         nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1284                         len = 0;
1285                         if (nameid)
1286                                 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1287                         if (! len)
1288                                 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1289                 }
1290                 strlcat(kctl->id.name, " ", sizeof(kctl->id.name));
1291                 strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name));
1292
1293                 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1294                             cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1295                 if ((err = add_control_to_empty(state, kctl)) < 0)
1296                         return err;
1297         }
1298         return 0;
1299 }
1300
1301
1302 static int parse_audio_processing_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1303 {
1304         return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1305 }
1306
1307 static int parse_audio_extension_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1308 {
1309         return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
1310 }
1311
1312
1313 /*
1314  * Selector Unit
1315  */
1316
1317 /* info callback for selector unit
1318  * use an enumerator type for routing
1319  */
1320 static int mixer_ctl_selector_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1321 {
1322         usb_mixer_elem_info_t *cval = kcontrol->private_data;
1323         char **itemlist = (char **)kcontrol->private_value;
1324
1325         snd_assert(itemlist, return -EINVAL);
1326         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1327         uinfo->count = 1;
1328         uinfo->value.enumerated.items = cval->max;
1329         if ((int)uinfo->value.enumerated.item >= cval->max)
1330                 uinfo->value.enumerated.item = cval->max - 1;
1331         strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1332         return 0;
1333 }
1334
1335 /* get callback for selector unit */
1336 static int mixer_ctl_selector_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1337 {
1338         usb_mixer_elem_info_t *cval = kcontrol->private_data;
1339         int val, err;
1340
1341         err = get_cur_ctl_value(cval, 0, &val);
1342         if (err < 0) {
1343                 if (cval->mixer->ignore_ctl_error) {
1344                         ucontrol->value.enumerated.item[0] = 0;
1345                         return 0;
1346                 }
1347                 return err;
1348         }
1349         val = get_relative_value(cval, val);
1350         ucontrol->value.enumerated.item[0] = val;
1351         return 0;
1352 }
1353
1354 /* put callback for selector unit */
1355 static int mixer_ctl_selector_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1356 {
1357         usb_mixer_elem_info_t *cval = kcontrol->private_data;
1358         int val, oval, err;
1359
1360         err = get_cur_ctl_value(cval, 0, &oval);
1361         if (err < 0) {
1362                 if (cval->mixer->ignore_ctl_error)
1363                         return 0;
1364                 return err;
1365         }
1366         val = ucontrol->value.enumerated.item[0];
1367         val = get_abs_value(cval, val);
1368         if (val != oval) {
1369                 set_cur_ctl_value(cval, 0, val);
1370                 return 1;
1371         }
1372         return 0;
1373 }
1374
1375 /* alsa control interface for selector unit */
1376 static snd_kcontrol_new_t mixer_selectunit_ctl = {
1377         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1378         .name = "", /* will be filled later */
1379         .info = mixer_ctl_selector_info,
1380         .get = mixer_ctl_selector_get,
1381         .put = mixer_ctl_selector_put,
1382 };
1383
1384
1385 /* private free callback.
1386  * free both private_data and private_value
1387  */
1388 static void usb_mixer_selector_elem_free(snd_kcontrol_t *kctl)
1389 {
1390         int i, num_ins = 0;
1391
1392         if (kctl->private_data) {
1393                 usb_mixer_elem_info_t *cval = kctl->private_data;
1394                 num_ins = cval->max;
1395                 kfree(cval);
1396                 kctl->private_data = NULL;
1397         }
1398         if (kctl->private_value) {
1399                 char **itemlist = (char **)kctl->private_value;
1400                 for (i = 0; i < num_ins; i++)
1401                         kfree(itemlist[i]);
1402                 kfree(itemlist);
1403                 kctl->private_value = 0;
1404         }
1405 }
1406
1407 /*
1408  * parse a selector unit
1409  */
1410 static int parse_audio_selector_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1411 {
1412         unsigned int num_ins = desc[4];
1413         unsigned int i, nameid, len;
1414         int err;
1415         usb_mixer_elem_info_t *cval;
1416         snd_kcontrol_t *kctl;
1417         char **namelist;
1418
1419         if (! num_ins || desc[0] < 6 + num_ins) {
1420                 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1421                 return -EINVAL;
1422         }
1423
1424         for (i = 0; i < num_ins; i++) {
1425                 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1426                         return err;
1427         }
1428
1429         if (num_ins == 1) /* only one ? nonsense! */
1430                 return 0;
1431
1432         if (check_ignored_ctl(state, unitid, 0))
1433                 return 0;
1434
1435         cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1436         if (! cval) {
1437                 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1438                 return -ENOMEM;
1439         }
1440         cval->mixer = state->mixer;
1441         cval->id = unitid;
1442         cval->val_type = USB_MIXER_U8;
1443         cval->channels = 1;
1444         cval->min = 1;
1445         cval->max = num_ins;
1446         cval->res = 1;
1447         cval->initialized = 1;
1448
1449         namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1450         if (! namelist) {
1451                 snd_printk(KERN_ERR "cannot malloc\n");
1452                 kfree(cval);
1453                 return -ENOMEM;
1454         }
1455 #define MAX_ITEM_NAME_LEN       64
1456         for (i = 0; i < num_ins; i++) {
1457                 usb_audio_term_t iterm;
1458                 len = 0;
1459                 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1460                 if (! namelist[i]) {
1461                         snd_printk(KERN_ERR "cannot malloc\n");
1462                         while (--i > 0)
1463                                 kfree(namelist[i]);
1464                         kfree(namelist);
1465                         kfree(cval);
1466                         return -ENOMEM;
1467                 }
1468                 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1469                                                  MAX_ITEM_NAME_LEN);
1470                 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1471                         len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1472                 if (! len)
1473                         sprintf(namelist[i], "Input %d", i);
1474         }
1475
1476         kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1477         if (! kctl) {
1478                 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1479                 kfree(cval);
1480                 return -ENOMEM;
1481         }
1482         kctl->private_value = (unsigned long)namelist;
1483         kctl->private_free = usb_mixer_selector_elem_free;
1484
1485         nameid = desc[desc[0] - 1];
1486         len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1487         if (len)
1488                 ;
1489         else if (nameid)
1490                 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1491         else {
1492                 len = get_term_name(state, &state->oterm,
1493                                     kctl->id.name, sizeof(kctl->id.name), 0);
1494                 if (! len)
1495                         strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1496
1497                 if ((state->oterm.type & 0xff00) == 0x0100)
1498                         strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name));
1499                 else
1500                         strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name));
1501         }
1502
1503         snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1504                     cval->id, kctl->id.name, num_ins);
1505         if ((err = add_control_to_empty(state, kctl)) < 0)
1506                 return err;
1507
1508         return 0;
1509 }
1510
1511
1512 /*
1513  * parse an audio unit recursively
1514  */
1515
1516 static int parse_audio_unit(mixer_build_t *state, int unitid)
1517 {
1518         unsigned char *p1;
1519
1520         if (test_and_set_bit(unitid, state->unitbitmap))
1521                 return 0; /* the unit already visited */
1522
1523         p1 = find_audio_control_unit(state, unitid);
1524         if (!p1) {
1525                 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1526                 return -EINVAL;
1527         }
1528
1529         switch (p1[2]) {
1530         case INPUT_TERMINAL:
1531                 return 0; /* NOP */
1532         case MIXER_UNIT:
1533                 return parse_audio_mixer_unit(state, unitid, p1);
1534         case SELECTOR_UNIT:
1535                 return parse_audio_selector_unit(state, unitid, p1);
1536         case FEATURE_UNIT:
1537                 return parse_audio_feature_unit(state, unitid, p1);
1538         case PROCESSING_UNIT:
1539                 return parse_audio_processing_unit(state, unitid, p1);
1540         case EXTENSION_UNIT:
1541                 return parse_audio_extension_unit(state, unitid, p1);
1542         default:
1543                 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1544                 return -EINVAL;
1545         }
1546 }
1547
1548 static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1549 {
1550         kfree(mixer->id_elems);
1551         if (mixer->urb) {
1552                 kfree(mixer->urb->transfer_buffer);
1553                 usb_free_urb(mixer->urb);
1554         }
1555         if (mixer->rc_urb)
1556                 usb_free_urb(mixer->rc_urb);
1557         kfree(mixer->rc_setup_packet);
1558         kfree(mixer);
1559 }
1560
1561 static int snd_usb_mixer_dev_free(snd_device_t *device)
1562 {
1563         struct usb_mixer_interface *mixer = device->device_data;
1564         snd_usb_mixer_free(mixer);
1565         return 0;
1566 }
1567
1568 /*
1569  * create mixer controls
1570  *
1571  * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1572  */
1573 static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1574 {
1575         unsigned char *desc;
1576         mixer_build_t state;
1577         int err;
1578         const struct usbmix_ctl_map *map;
1579         struct usb_host_interface *hostif;
1580
1581         hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1582         memset(&state, 0, sizeof(state));
1583         state.chip = mixer->chip;
1584         state.mixer = mixer;
1585         state.buffer = hostif->extra;
1586         state.buflen = hostif->extralen;
1587
1588         /* check the mapping table */
1589         for (map = usbmix_ctl_maps; map->id; map++) {
1590                 if (map->id == state.chip->usb_id) {
1591                         state.map = map->map;
1592                         state.selector_map = map->selector_map;
1593                         mixer->ignore_ctl_error = map->ignore_ctl_error;
1594                         break;
1595                 }
1596         }
1597
1598         desc = NULL;
1599         while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
1600                 if (desc[0] < 9)
1601                         continue; /* invalid descriptor? */
1602                 set_bit(desc[3], state.unitbitmap);  /* mark terminal ID as visited */
1603                 state.oterm.id = desc[3];
1604                 state.oterm.type = combine_word(&desc[4]);
1605                 state.oterm.name = desc[8];
1606                 err = parse_audio_unit(&state, desc[7]);
1607                 if (err < 0)
1608                         return err;
1609         }
1610         return 0;
1611 }
1612
1613 static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1614                                     int unitid)
1615 {
1616         usb_mixer_elem_info_t *info;
1617
1618         for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1619                 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1620                                info->elem_id);
1621 }
1622
1623 static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1624                                         int unitid)
1625 {
1626         if (mixer->rc_type == RC_NONE)
1627                 return;
1628         /* unit ids specific to Extigy/Audigy 2 NX: */
1629         switch (unitid) {
1630         case 0: /* remote control */
1631                 mixer->rc_urb->dev = mixer->chip->dev;
1632                 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1633                 break;
1634         case 4: /* digital in jack */
1635         case 7: /* line in jacks */
1636         case 19: /* speaker out jacks */
1637         case 20: /* headphones out jack */
1638                 break;
1639         default:
1640                 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
1641                 break;
1642         }
1643 }
1644
1645 static void snd_usb_mixer_status_complete(struct urb *urb, struct pt_regs *regs)
1646 {
1647         struct usb_mixer_interface *mixer = urb->context;
1648
1649         if (urb->status == 0) {
1650                 u8 *buf = urb->transfer_buffer;
1651                 int i;
1652
1653                 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1654                         snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1655                                    buf[0], buf[1]);
1656                         /* ignore any notifications not from the control interface */
1657                         if ((buf[0] & 0x0f) != 0)
1658                                 continue;
1659                         if (!(buf[0] & 0x40))
1660                                 snd_usb_mixer_notify_id(mixer, buf[1]);
1661                         else
1662                                 snd_usb_mixer_memory_change(mixer, buf[1]);
1663                 }
1664         }
1665         if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1666                 urb->dev = mixer->chip->dev;
1667                 usb_submit_urb(urb, GFP_ATOMIC);
1668         }
1669 }
1670
1671 /* create the handler for the optional status interrupt endpoint */
1672 static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1673 {
1674         struct usb_host_interface *hostif;
1675         struct usb_endpoint_descriptor *ep;
1676         void *transfer_buffer;
1677         int buffer_length;
1678         unsigned int epnum;
1679
1680         hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1681         /* we need one interrupt input endpoint */
1682         if (get_iface_desc(hostif)->bNumEndpoints < 1)
1683                 return 0;
1684         ep = get_endpoint(hostif, 0);
1685         if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
1686             (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1687                 return 0;
1688
1689         epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1690         buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1691         transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1692         if (!transfer_buffer)
1693                 return -ENOMEM;
1694         mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1695         if (!mixer->urb) {
1696                 kfree(transfer_buffer);
1697                 return -ENOMEM;
1698         }
1699         usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1700                          usb_rcvintpipe(mixer->chip->dev, epnum),
1701                          transfer_buffer, buffer_length,
1702                          snd_usb_mixer_status_complete, mixer, ep->bInterval);
1703         usb_submit_urb(mixer->urb, GFP_KERNEL);
1704         return 0;
1705 }
1706
1707 static void snd_usb_soundblaster_remote_complete(struct urb *urb,
1708                                                  struct pt_regs *regs)
1709 {
1710         struct usb_mixer_interface *mixer = urb->context;
1711         /*
1712          * format of remote control data:
1713          * Extigy:      xx 00
1714          * Audigy 2 NX: 06 80 xx 00 00 00
1715          */
1716         int offset = mixer->rc_type == RC_EXTIGY ? 0 : 2;
1717         u32 code;
1718
1719         if (urb->status < 0 || urb->actual_length <= offset)
1720                 return;
1721         code = mixer->rc_buffer[offset];
1722         /* the Mute button actually changes the mixer control */
1723         if (code == 13)
1724                 snd_usb_mixer_notify_id(mixer, 18);
1725         mixer->rc_code = code;
1726         wmb();
1727         wake_up(&mixer->rc_waitq);
1728 }
1729
1730 static int snd_usb_sbrc_hwdep_open(snd_hwdep_t *hw, struct file *file)
1731 {
1732         struct usb_mixer_interface *mixer = hw->private_data;
1733
1734         if (test_and_set_bit(0, &mixer->rc_hwdep_open))
1735                 return -EBUSY;
1736         return 0;
1737 }
1738
1739 static int snd_usb_sbrc_hwdep_release(snd_hwdep_t *hw, struct file *file)
1740 {
1741         struct usb_mixer_interface *mixer = hw->private_data;
1742
1743         clear_bit(0, &mixer->rc_hwdep_open);
1744         smp_mb__after_clear_bit();
1745         return 0;
1746 }
1747
1748 static long snd_usb_sbrc_hwdep_read(snd_hwdep_t *hw, char __user *buf,
1749                                      long count, loff_t *offset)
1750 {
1751         struct usb_mixer_interface *mixer = hw->private_data;
1752         int err;
1753         u32 rc_code;
1754
1755         if (count != 1 && count != 4)
1756                 return -EINVAL;
1757         err = wait_event_interruptible(mixer->rc_waitq,
1758                                        (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1759         if (err == 0) {
1760                 if (count == 1)
1761                         err = put_user(rc_code, buf);
1762                 else
1763                         err = put_user(rc_code, (u32 __user *)buf);
1764         }
1765         return err < 0 ? err : count;
1766 }
1767
1768 static unsigned int snd_usb_sbrc_hwdep_poll(snd_hwdep_t *hw, struct file *file,
1769                                             poll_table *wait)
1770 {
1771         struct usb_mixer_interface *mixer = hw->private_data;
1772
1773         poll_wait(file, &mixer->rc_waitq, wait);
1774         return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
1775 }
1776
1777 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
1778 {
1779         snd_hwdep_t *hwdep;
1780         int err, len;
1781
1782         switch (mixer->chip->usb_id) {
1783         case USB_ID(0x041e, 0x3000):
1784                 mixer->rc_type = RC_EXTIGY;
1785                 len = 2;
1786                 break;
1787         case USB_ID(0x041e, 0x3020):
1788                 mixer->rc_type = RC_AUDIGY2NX;
1789                 len = 6;
1790                 break;
1791         default:
1792                 return 0;
1793         }
1794
1795         init_waitqueue_head(&mixer->rc_waitq);
1796         err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
1797         if (err < 0)
1798                 return err;
1799         snprintf(hwdep->name, sizeof(hwdep->name),
1800                  "%s remote control", mixer->chip->card->shortname);
1801         hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
1802         hwdep->private_data = mixer;
1803         hwdep->ops.read = snd_usb_sbrc_hwdep_read;
1804         hwdep->ops.open = snd_usb_sbrc_hwdep_open;
1805         hwdep->ops.release = snd_usb_sbrc_hwdep_release;
1806         hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
1807
1808         mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
1809         if (!mixer->rc_urb)
1810                 return -ENOMEM;
1811         mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
1812         if (!mixer->rc_setup_packet) {
1813                 usb_free_urb(mixer->rc_urb);
1814                 mixer->rc_urb = NULL;
1815                 return -ENOMEM;
1816         }
1817         mixer->rc_setup_packet->bRequestType =
1818                 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
1819         mixer->rc_setup_packet->bRequest = GET_MEM;
1820         mixer->rc_setup_packet->wValue = cpu_to_le16(0);
1821         mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
1822         mixer->rc_setup_packet->wLength = cpu_to_le16(len);
1823         usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
1824                              usb_rcvctrlpipe(mixer->chip->dev, 0),
1825                              (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
1826                              snd_usb_soundblaster_remote_complete, mixer);
1827         return 0;
1828 }
1829
1830 static int snd_audigy2nx_led_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1831 {
1832         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1833         uinfo->count = 1;
1834         uinfo->value.integer.min = 0;
1835         uinfo->value.integer.max = 1;
1836         return 0;
1837 }
1838
1839 static int snd_audigy2nx_led_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1840 {
1841         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1842         int index = kcontrol->private_value;
1843
1844         ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
1845         return 0;
1846 }
1847
1848 static int snd_audigy2nx_led_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1849 {
1850         struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1851         int index = kcontrol->private_value;
1852         int value = ucontrol->value.integer.value[0];
1853         int err, changed;
1854
1855         if (value > 1)
1856                 return -EINVAL;
1857         changed = value != mixer->audigy2nx_leds[index];
1858         err = snd_usb_ctl_msg(mixer->chip->dev,
1859                               usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
1860                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1861                               value, index + 2, NULL, 0, 100);
1862         if (err < 0)
1863                 return err;
1864         mixer->audigy2nx_leds[index] = value;
1865         return changed;
1866 }
1867
1868 static snd_kcontrol_new_t snd_audigy2nx_controls[] = {
1869         {
1870                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1871                 .name = "CMSS LED Switch",
1872                 .info = snd_audigy2nx_led_info,
1873                 .get = snd_audigy2nx_led_get,
1874                 .put = snd_audigy2nx_led_put,
1875                 .private_value = 0,
1876         },
1877         {
1878                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1879                 .name = "Power LED Switch",
1880                 .info = snd_audigy2nx_led_info,
1881                 .get = snd_audigy2nx_led_get,
1882                 .put = snd_audigy2nx_led_put,
1883                 .private_value = 1,
1884         },
1885         {
1886                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1887                 .name = "Dolby Digital LED Switch",
1888                 .info = snd_audigy2nx_led_info,
1889                 .get = snd_audigy2nx_led_get,
1890                 .put = snd_audigy2nx_led_put,
1891                 .private_value = 2,
1892         },
1893 };
1894
1895 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
1896 {
1897         int i, err;
1898
1899         for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
1900                 err = snd_ctl_add(mixer->chip->card,
1901                                   snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
1902                 if (err < 0)
1903                         return err;
1904         }
1905         mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
1906         return 0;
1907 }
1908
1909 static void snd_audigy2nx_proc_read(snd_info_entry_t *entry,
1910                                     snd_info_buffer_t *buffer)
1911 {
1912         static const struct {
1913                 int unitid;
1914                 const char *name;
1915         } jacks[] = {
1916                 {4,  "dig in "},
1917                 {7,  "line in"},
1918                 {19, "spk out"},
1919                 {20, "hph out"},
1920         };
1921         struct usb_mixer_interface *mixer = entry->private_data;
1922         int i, err;
1923         u8 buf[3];
1924
1925         snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
1926         for (i = 0; i < ARRAY_SIZE(jacks); ++i) {
1927                 snd_iprintf(buffer, "%s: ", jacks[i].name);
1928                 err = snd_usb_ctl_msg(mixer->chip->dev,
1929                                       usb_rcvctrlpipe(mixer->chip->dev, 0),
1930                                       GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
1931                                       USB_RECIP_INTERFACE, 0,
1932                                       jacks[i].unitid << 8, buf, 3, 100);
1933                 if (err == 3 && buf[0] == 3)
1934                         snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
1935                 else
1936                         snd_iprintf(buffer, "?\n");
1937         }
1938 }
1939
1940 int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
1941 {
1942         static snd_device_ops_t dev_ops = {
1943                 .dev_free = snd_usb_mixer_dev_free
1944         };
1945         struct usb_mixer_interface *mixer;
1946         int err;
1947
1948         strcpy(chip->card->mixername, "USB Mixer");
1949
1950         mixer = kcalloc(1, sizeof(*mixer), GFP_KERNEL);
1951         if (!mixer)
1952                 return -ENOMEM;
1953         mixer->chip = chip;
1954         mixer->ctrlif = ctrlif;
1955 #ifdef IGNORE_CTL_ERROR
1956         mixer->ignore_ctl_error = 1;
1957 #endif
1958         mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
1959         if (!mixer->id_elems) {
1960                 kfree(mixer);
1961                 return -ENOMEM;
1962         }
1963
1964         if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
1965             (err = snd_usb_mixer_status_create(mixer)) < 0)
1966                 goto _error;
1967
1968         if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
1969                 goto _error;
1970
1971         if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) {
1972                 snd_info_entry_t *entry;
1973
1974                 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
1975                         goto _error;
1976                 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
1977                         snd_info_set_text_ops(entry, mixer, 1024,
1978                                               snd_audigy2nx_proc_read);
1979         }
1980
1981         err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
1982         if (err < 0)
1983                 goto _error;
1984         list_add(&mixer->list, &chip->mixer_list);
1985         return 0;
1986
1987 _error:
1988         snd_usb_mixer_free(mixer);
1989         return err;
1990 }
1991
1992 void snd_usb_mixer_disconnect(struct list_head *p)
1993 {
1994         struct usb_mixer_interface *mixer;
1995
1996         mixer = list_entry(p, struct usb_mixer_interface, list);
1997         if (mixer->urb)
1998                 usb_kill_urb(mixer->urb);
1999         if (mixer->rc_urb)
2000                 usb_kill_urb(mixer->rc_urb);
2001 }