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#include <sound/tlv.h> 41 42#include "usbaudio.h" 43 44/* 45 */ 46 47/* ignore error from controls - for debugging */ 48/* #define IGNORE_CTL_ERROR */ 49 50/* 51 * Sound Blaster remote control configuration 52 * 53 * format of remote control data: 54 * Extigy: xx 00 55 * Audigy 2 NX: 06 80 xx 00 00 00 56 * Live! 24-bit: 06 80 xx yy 22 83 57 */ 58static const struct rc_config { 59 u32 usb_id; 60 u8 offset; 61 u8 length; 62 u8 packet_length; 63 u8 mute_mixer_id; 64 u32 mute_code; 65} rc_configs[] = { 66 { USB_ID(0x041e, 0x3000), 0, 1, 2, 18, 0x0013 }, /* Extigy */ 67 { USB_ID(0x041e, 0x3020), 2, 1, 6, 18, 0x0013 }, /* Audigy 2 NX */ 68 { USB_ID(0x041e, 0x3040), 2, 2, 6, 2, 0x6e91 }, /* Live! 24-bit */ 69}; 70 71struct usb_mixer_interface { 72 struct snd_usb_audio *chip; 73 unsigned int ctrlif; 74 struct list_head list; 75 unsigned int ignore_ctl_error; 76 struct urb *urb; 77 struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */ 78 79 /* Sound Blaster remote control stuff */ 80 const struct rc_config *rc_cfg; 81 unsigned long rc_hwdep_open; 82 u32 rc_code; 83 wait_queue_head_t rc_waitq; 84 struct urb *rc_urb; 85 struct usb_ctrlrequest *rc_setup_packet; 86 u8 rc_buffer[6]; 87 88 u8 audigy2nx_leds[3]; 89}; 90 91 92struct usb_audio_term { 93 int id; 94 int type; 95 int channels; 96 unsigned int chconfig; 97 int name; 98}; 99 100struct usbmix_name_map; 101 102struct mixer_build { 103 struct snd_usb_audio *chip; 104 struct usb_mixer_interface *mixer; 105 unsigned char *buffer; 106 unsigned int buflen; 107 DECLARE_BITMAP(unitbitmap, 256); 108 struct usb_audio_term oterm; 109 const struct usbmix_name_map *map; 110 const struct usbmix_selector_map *selector_map; 111}; 112 113struct usb_mixer_elem_info { 114 struct usb_mixer_interface *mixer; 115 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */ 116 struct snd_ctl_elem_id *elem_id; 117 unsigned int id; 118 unsigned int control; /* CS or ICN (high byte) */ 119 unsigned int cmask; /* channel mask bitmap: 0 = master */ 120 int channels; 121 int val_type; 122 int min, max, res; 123 u8 initialized; 124}; 125 126 127enum { 128 USB_FEATURE_NONE = 0, 129 USB_FEATURE_MUTE = 1, 130 USB_FEATURE_VOLUME, 131 USB_FEATURE_BASS, 132 USB_FEATURE_MID, 133 USB_FEATURE_TREBLE, 134 USB_FEATURE_GEQ, 135 USB_FEATURE_AGC, 136 USB_FEATURE_DELAY, 137 USB_FEATURE_BASSBOOST, 138 USB_FEATURE_LOUDNESS 139}; 140 141enum { 142 USB_MIXER_BOOLEAN, 143 USB_MIXER_INV_BOOLEAN, 144 USB_MIXER_S8, 145 USB_MIXER_U8, 146 USB_MIXER_S16, 147 USB_MIXER_U16, 148}; 149 150enum { 151 USB_PROC_UPDOWN = 1, 152 USB_PROC_UPDOWN_SWITCH = 1, 153 USB_PROC_UPDOWN_MODE_SEL = 2, 154 155 USB_PROC_PROLOGIC = 2, 156 USB_PROC_PROLOGIC_SWITCH = 1, 157 USB_PROC_PROLOGIC_MODE_SEL = 2, 158 159 USB_PROC_3DENH = 3, 160 USB_PROC_3DENH_SWITCH = 1, 161 USB_PROC_3DENH_SPACE = 2, 162 163 USB_PROC_REVERB = 4, 164 USB_PROC_REVERB_SWITCH = 1, 165 USB_PROC_REVERB_LEVEL = 2, 166 USB_PROC_REVERB_TIME = 3, 167 USB_PROC_REVERB_DELAY = 4, 168 169 USB_PROC_CHORUS = 5, 170 USB_PROC_CHORUS_SWITCH = 1, 171 USB_PROC_CHORUS_LEVEL = 2, 172 USB_PROC_CHORUS_RATE = 3, 173 USB_PROC_CHORUS_DEPTH = 4, 174 175 USB_PROC_DCR = 6, 176 USB_PROC_DCR_SWITCH = 1, 177 USB_PROC_DCR_RATIO = 2, 178 USB_PROC_DCR_MAX_AMP = 3, 179 USB_PROC_DCR_THRESHOLD = 4, 180 USB_PROC_DCR_ATTACK = 5, 181 USB_PROC_DCR_RELEASE = 6, 182}; 183 184#define MAX_CHANNELS 10 /* max logical channels */ 185 186 187/* 188 * manual mapping of mixer names 189 * if the mixer topology is too complicated and the parsed names are 190 * ambiguous, add the entries in usbmixer_maps.c. 191 */ 192#include "usbmixer_maps.c" 193 194/* get the mapped name if the unit matches */ 195static int check_mapped_name(struct mixer_build *state, int unitid, int control, char *buf, int buflen) 196{ 197 const struct usbmix_name_map *p; 198 199 if (! state->map) 200 return 0; 201 202 for (p = state->map; p->id; p++) { 203 if (p->id == unitid && p->name && 204 (! control || ! p->control || control == p->control)) { 205 buflen--; 206 return strlcpy(buf, p->name, buflen); 207 } 208 } 209 return 0; 210} 211 212/* check whether the control should be ignored */ 213static int check_ignored_ctl(struct mixer_build *state, int unitid, int control) 214{ 215 const struct usbmix_name_map *p; 216 217 if (! state->map) 218 return 0; 219 for (p = state->map; p->id; p++) { 220 if (p->id == unitid && ! p->name && 221 (! control || ! p->control || control == p->control)) { 222 // printk("ignored control %d:%d\n", unitid, control); 223 return 1; 224 } 225 } 226 return 0; 227} 228 229/* get the mapped selector source name */ 230static int check_mapped_selector_name(struct mixer_build *state, int unitid, 231 int index, char *buf, int buflen) 232{ 233 const struct usbmix_selector_map *p; 234 235 if (! state->selector_map) 236 return 0; 237 for (p = state->selector_map; p->id; p++) { 238 if (p->id == unitid && index < p->count) 239 return strlcpy(buf, p->names[index], buflen); 240 } 241 return 0; 242} 243 244/* 245 * find an audio control unit with the given unit id 246 */ 247static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit) 248{ 249 unsigned char *p; 250 251 p = NULL; 252 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p, 253 USB_DT_CS_INTERFACE)) != NULL) { 254 if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit) 255 return p; 256 } 257 return NULL; 258} 259 260 261/* 262 * copy a string with the given id 263 */ 264static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen) 265{ 266 int len = usb_string(state->chip->dev, index, buf, maxlen - 1); 267 buf[len] = 0; 268 return len; 269} 270 271/* 272 * convert from the byte/word on usb descriptor to the zero-based integer 273 */ 274static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) 275{ 276 switch (cval->val_type) { 277 case USB_MIXER_BOOLEAN: 278 return !!val; 279 case USB_MIXER_INV_BOOLEAN: 280 return !val; 281 case USB_MIXER_U8: 282 val &= 0xff; 283 break; 284 case USB_MIXER_S8: 285 val &= 0xff; 286 if (val >= 0x80) 287 val -= 0x100; 288 break; 289 case USB_MIXER_U16: 290 val &= 0xffff; 291 break; 292 case USB_MIXER_S16: 293 val &= 0xffff; 294 if (val >= 0x8000) 295 val -= 0x10000; 296 break; 297 } 298 return val; 299} 300 301/* 302 * convert from the zero-based int to the byte/word for usb descriptor 303 */ 304static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) 305{ 306 switch (cval->val_type) { 307 case USB_MIXER_BOOLEAN: 308 return !!val; 309 case USB_MIXER_INV_BOOLEAN: 310 return !val; 311 case USB_MIXER_S8: 312 case USB_MIXER_U8: 313 return val & 0xff; 314 case USB_MIXER_S16: 315 case USB_MIXER_U16: 316 return val & 0xffff; 317 } 318 return 0; /* not reached */ 319} 320 321static int get_relative_value(struct usb_mixer_elem_info *cval, int val) 322{ 323 if (! cval->res) 324 cval->res = 1; 325 if (val < cval->min) 326 return 0; 327 else if (val >= cval->max) 328 return (cval->max - cval->min + cval->res - 1) / cval->res; 329 else 330 return (val - cval->min) / cval->res; 331} 332 333static int get_abs_value(struct usb_mixer_elem_info *cval, int val) 334{ 335 if (val < 0) 336 return cval->min; 337 if (! cval->res) 338 cval->res = 1; 339 val *= cval->res; 340 val += cval->min; 341 if (val > cval->max) 342 return cval->max; 343 return val; 344} 345 346 347/* 348 * retrieve a mixer value 349 */ 350 351static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) 352{ 353 unsigned char buf[2]; 354 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 355 int timeout = 10; 356 357 while (timeout-- > 0) { 358 if (snd_usb_ctl_msg(cval->mixer->chip->dev, 359 usb_rcvctrlpipe(cval->mixer->chip->dev, 0), 360 request, 361 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 362 validx, cval->mixer->ctrlif | (cval->id << 8), 363 buf, val_len, 100) >= val_len) { 364 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); 365 return 0; 366 } 367 } 368 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", 369 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type); 370 return -EINVAL; 371} 372 373static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value) 374{ 375 return get_ctl_value(cval, GET_CUR, validx, value); 376} 377 378/* channel = 0: master, 1 = first channel */ 379static inline int get_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, int *value) 380{ 381 return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value); 382} 383 384/* 385 * set a mixer value 386 */ 387 388static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set) 389{ 390 unsigned char buf[2]; 391 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 392 int timeout = 10; 393 394 value_set = convert_bytes_value(cval, value_set); 395 buf[0] = value_set & 0xff; 396 buf[1] = (value_set >> 8) & 0xff; 397 while (timeout -- > 0) 398 if (snd_usb_ctl_msg(cval->mixer->chip->dev, 399 usb_sndctrlpipe(cval->mixer->chip->dev, 0), 400 request, 401 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, 402 validx, cval->mixer->ctrlif | (cval->id << 8), 403 buf, val_len, 100) >= 0) 404 return 0; 405 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", 406 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]); 407 return -EINVAL; 408} 409 410static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value) 411{ 412 return set_ctl_value(cval, SET_CUR, validx, value); 413} 414 415static inline int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, int value) 416{ 417 return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value); 418} 419 420/* 421 * TLV callback for mixer volume controls 422 */ 423static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, 424 unsigned int size, unsigned int __user *_tlv) 425{ 426 struct usb_mixer_elem_info *cval = kcontrol->private_data; 427 DECLARE_TLV_DB_SCALE(scale, 0, 0, 0); 428 429 if (size < sizeof(scale)) 430 return -ENOMEM; 431 /* USB descriptions contain the dB scale in 1/256 dB unit 432 * while ALSA TLV contains in 1/100 dB unit 433 */ 434 scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256; 435 scale[3] = (convert_signed_value(cval, cval->res) * 100) / 256; 436 if (copy_to_user(_tlv, scale, sizeof(scale))) 437 return -EFAULT; 438 return 0; 439} 440 441/* 442 * parser routines begin here... 443 */ 444 445static int parse_audio_unit(struct mixer_build *state, int unitid); 446 447 448/* 449 * check if the input/output channel routing is enabled on the given bitmap. 450 * used for mixer unit parser 451 */ 452static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs) 453{ 454 int idx = ich * num_outs + och; 455 return bmap[idx >> 3] & (0x80 >> (idx & 7)); 456} 457 458 459/* 460 * add an alsa control element 461 * search and increment the index until an empty slot is found. 462 * 463 * if failed, give up and free the control instance. 464 */ 465 466static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl) 467{ 468 struct usb_mixer_elem_info *cval = kctl->private_data; 469 int err; 470 471 while (snd_ctl_find_id(state->chip->card, &kctl->id)) 472 kctl->id.index++; 473 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) { 474 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err); 475 return err; 476 } 477 cval->elem_id = &kctl->id; 478 cval->next_id_elem = state->mixer->id_elems[cval->id]; 479 state->mixer->id_elems[cval->id] = cval; 480 return 0; 481} 482 483 484/* 485 * get a terminal name string 486 */ 487 488static struct iterm_name_combo { 489 int type; 490 char *name; 491} iterm_names[] = { 492 { 0x0300, "Output" }, 493 { 0x0301, "Speaker" }, 494 { 0x0302, "Headphone" }, 495 { 0x0303, "HMD Audio" }, 496 { 0x0304, "Desktop Speaker" }, 497 { 0x0305, "Room Speaker" }, 498 { 0x0306, "Com Speaker" }, 499 { 0x0307, "LFE" }, 500 { 0x0600, "External In" }, 501 { 0x0601, "Analog In" }, 502 { 0x0602, "Digital In" }, 503 { 0x0603, "Line" }, 504 { 0x0604, "Legacy In" }, 505 { 0x0605, "IEC958 In" }, 506 { 0x0606, "1394 DA Stream" }, 507 { 0x0607, "1394 DV Stream" }, 508 { 0x0700, "Embedded" }, 509 { 0x0701, "Noise Source" }, 510 { 0x0702, "Equalization Noise" }, 511 { 0x0703, "CD" }, 512 { 0x0704, "DAT" }, 513 { 0x0705, "DCC" }, 514 { 0x0706, "MiniDisk" }, 515 { 0x0707, "Analog Tape" }, 516 { 0x0708, "Phonograph" }, 517 { 0x0709, "VCR Audio" }, 518 { 0x070a, "Video Disk Audio" }, 519 { 0x070b, "DVD Audio" }, 520 { 0x070c, "TV Tuner Audio" }, 521 { 0x070d, "Satellite Rec Audio" }, 522 { 0x070e, "Cable Tuner Audio" }, 523 { 0x070f, "DSS Audio" }, 524 { 0x0710, "Radio Receiver" }, 525 { 0x0711, "Radio Transmitter" }, 526 { 0x0712, "Multi-Track Recorder" }, 527 { 0x0713, "Synthesizer" }, 528 { 0 }, 529}; 530 531static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, 532 unsigned char *name, int maxlen, int term_only) 533{ 534 struct iterm_name_combo *names; 535 536 if (iterm->name) 537 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen); 538 539 /* virtual type - not a real terminal */ 540 if (iterm->type >> 16) { 541 if (term_only) 542 return 0; 543 switch (iterm->type >> 16) { 544 case SELECTOR_UNIT: 545 strcpy(name, "Selector"); return 8; 546 case PROCESSING_UNIT: 547 strcpy(name, "Process Unit"); return 12; 548 case EXTENSION_UNIT: 549 strcpy(name, "Ext Unit"); return 8; 550 case MIXER_UNIT: 551 strcpy(name, "Mixer"); return 5; 552 default: 553 return sprintf(name, "Unit %d", iterm->id); 554 } 555 } 556 557 switch (iterm->type & 0xff00) { 558 case 0x0100: 559 strcpy(name, "PCM"); return 3; 560 case 0x0200: 561 strcpy(name, "Mic"); return 3; 562 case 0x0400: 563 strcpy(name, "Headset"); return 7; 564 case 0x0500: 565 strcpy(name, "Phone"); return 5; 566 } 567 568 for (names = iterm_names; names->type; names++) 569 if (names->type == iterm->type) { 570 strcpy(name, names->name); 571 return strlen(names->name); 572 } 573 return 0; 574} 575 576 577/* 578 * parse the source unit recursively until it reaches to a terminal 579 * or a branched unit. 580 */ 581static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term) 582{ 583 unsigned char *p1; 584 585 memset(term, 0, sizeof(*term)); 586 while ((p1 = find_audio_control_unit(state, id)) != NULL) { 587 term->id = id; 588 switch (p1[2]) { 589 case INPUT_TERMINAL: 590 term->type = combine_word(p1 + 4); 591 term->channels = p1[7]; 592 term->chconfig = combine_word(p1 + 8); 593 term->name = p1[11]; 594 return 0; 595 case FEATURE_UNIT: 596 id = p1[4]; 597 break; /* continue to parse */ 598 case MIXER_UNIT: 599 term->type = p1[2] << 16; /* virtual type */ 600 term->channels = p1[5 + p1[4]]; 601 term->chconfig = combine_word(p1 + 6 + p1[4]); 602 term->name = p1[p1[0] - 1]; 603 return 0; 604 case SELECTOR_UNIT: 605 /* call recursively to retrieve the channel info */ 606 if (check_input_term(state, p1[5], term) < 0) 607 return -ENODEV; 608 term->type = p1[2] << 16; /* virtual type */ 609 term->id = id; 610 term->name = p1[9 + p1[0] - 1]; 611 return 0; 612 case PROCESSING_UNIT: 613 case EXTENSION_UNIT: 614 if (p1[6] == 1) { 615 id = p1[7]; 616 break; /* continue to parse */ 617 } 618 term->type = p1[2] << 16; /* virtual type */ 619 term->channels = p1[7 + p1[6]]; 620 term->chconfig = combine_word(p1 + 8 + p1[6]); 621 term->name = p1[12 + p1[6] + p1[11 + p1[6]]]; 622 return 0; 623 default: 624 return -ENODEV; 625 } 626 } 627 return -ENODEV; 628} 629 630 631/* 632 * Feature Unit 633 */ 634 635/* feature unit control information */ 636struct usb_feature_control_info { 637 const char *name; 638 unsigned int type; /* control type (mute, volume, etc.) */ 639}; 640 641static struct usb_feature_control_info audio_feature_info[] = { 642 { "Mute", USB_MIXER_INV_BOOLEAN }, 643 { "Volume", USB_MIXER_S16 }, 644 { "Tone Control - Bass", USB_MIXER_S8 }, 645 { "Tone Control - Mid", USB_MIXER_S8 }, 646 { "Tone Control - Treble", USB_MIXER_S8 }, 647 { "Graphic Equalizer", USB_MIXER_S8 }, 648 { "Auto Gain Control", USB_MIXER_BOOLEAN }, 649 { "Delay Control", USB_MIXER_U16 }, 650 { "Bass Boost", USB_MIXER_BOOLEAN }, 651 { "Loudness", USB_MIXER_BOOLEAN }, 652}; 653 654 655/* private_free callback */ 656static void usb_mixer_elem_free(struct snd_kcontrol *kctl) 657{ 658 kfree(kctl->private_data); 659 kctl->private_data = NULL; 660} 661 662 663/* 664 * interface to ALSA control for feature/mixer units 665 */ 666 667/* 668 * retrieve the minimum and maximum values for the specified control 669 */ 670static int get_min_max(struct usb_mixer_elem_info *cval, int default_min) 671{ 672 /* for failsafe */ 673 cval->min = default_min; 674 cval->max = cval->min + 1; 675 cval->res = 1; 676 677 if (cval->val_type == USB_MIXER_BOOLEAN || 678 cval->val_type == USB_MIXER_INV_BOOLEAN) { 679 cval->initialized = 1; 680 } else { 681 int minchn = 0; 682 if (cval->cmask) { 683 int i; 684 for (i = 0; i < MAX_CHANNELS; i++) 685 if (cval->cmask & (1 << i)) { 686 minchn = i + 1; 687 break; 688 } 689 } 690 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || 691 get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { 692 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n", 693 cval->id, cval->mixer->ctrlif, cval->control, cval->id); 694 return -EINVAL; 695 } 696 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) { 697 cval->res = 1; 698 } else { 699 int last_valid_res = cval->res; 700 701 while (cval->res > 1) { 702 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0) 703 break; 704 cval->res /= 2; 705 } 706 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) 707 cval->res = last_valid_res; 708 } 709 if (cval->res == 0) 710 cval->res = 1; 711 712 /* Additional checks for the proper resolution 713 * 714 * Some devices report smaller resolutions than actually 715 * reacting. They don't return errors but simply clip 716 * to the lower aligned value. 717 */ 718 if (cval->min + cval->res < cval->max) { 719 int last_valid_res = cval->res; 720 int saved, test, check; 721 get_cur_mix_value(cval, minchn, &saved); 722 for (;;) { 723 test = saved; 724 if (test < cval->max) 725 test += cval->res; 726 else 727 test -= cval->res; 728 if (test < cval->min || test > cval->max || 729 set_cur_mix_value(cval, minchn, test) || 730 get_cur_mix_value(cval, minchn, &check)) { 731 cval->res = last_valid_res; 732 break; 733 } 734 if (test == check) 735 break; 736 cval->res *= 2; 737 } 738 set_cur_mix_value(cval, minchn, saved); 739 } 740 741 cval->initialized = 1; 742 } 743 return 0; 744} 745 746 747/* get a feature/mixer unit info */ 748static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 749{ 750 struct usb_mixer_elem_info *cval = kcontrol->private_data; 751 752 if (cval->val_type == USB_MIXER_BOOLEAN || 753 cval->val_type == USB_MIXER_INV_BOOLEAN) 754 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 755 else 756 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 757 uinfo->count = cval->channels; 758 if (cval->val_type == USB_MIXER_BOOLEAN || 759 cval->val_type == USB_MIXER_INV_BOOLEAN) { 760 uinfo->value.integer.min = 0; 761 uinfo->value.integer.max = 1; 762 } else { 763 if (! cval->initialized) 764 get_min_max(cval, 0); 765 uinfo->value.integer.min = 0; 766 uinfo->value.integer.max = 767 (cval->max - cval->min + cval->res - 1) / cval->res; 768 } 769 return 0; 770} 771 772/* get the current value from feature/mixer unit */ 773static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 774{ 775 struct usb_mixer_elem_info *cval = kcontrol->private_data; 776 int c, cnt, val, err; 777 778 if (cval->cmask) { 779 cnt = 0; 780 for (c = 0; c < MAX_CHANNELS; c++) { 781 if (cval->cmask & (1 << c)) { 782 err = get_cur_mix_value(cval, c + 1, &val); 783 if (err < 0) { 784 if (cval->mixer->ignore_ctl_error) { 785 ucontrol->value.integer.value[0] = cval->min; 786 return 0; 787 } 788 snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err); 789 return err; 790 } 791 val = get_relative_value(cval, val); 792 ucontrol->value.integer.value[cnt] = val; 793 cnt++; 794 } 795 } 796 } else { 797 /* master channel */ 798 err = get_cur_mix_value(cval, 0, &val); 799 if (err < 0) { 800 if (cval->mixer->ignore_ctl_error) { 801 ucontrol->value.integer.value[0] = cval->min; 802 return 0; 803 } 804 snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err); 805 return err; 806 } 807 val = get_relative_value(cval, val); 808 ucontrol->value.integer.value[0] = val; 809 } 810 return 0; 811} 812 813/* put the current value to feature/mixer unit */ 814static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 815{ 816 struct usb_mixer_elem_info *cval = kcontrol->private_data; 817 int c, cnt, val, oval, err; 818 int changed = 0; 819 820 if (cval->cmask) { 821 cnt = 0; 822 for (c = 0; c < MAX_CHANNELS; c++) { 823 if (cval->cmask & (1 << c)) { 824 err = get_cur_mix_value(cval, c + 1, &oval); 825 if (err < 0) { 826 if (cval->mixer->ignore_ctl_error) 827 return 0; 828 return err; 829 } 830 val = ucontrol->value.integer.value[cnt]; 831 val = get_abs_value(cval, val); 832 if (oval != val) { 833 set_cur_mix_value(cval, c + 1, val); 834 changed = 1; 835 } 836 get_cur_mix_value(cval, c + 1, &val); 837 cnt++; 838 } 839 } 840 } else { 841 /* master channel */ 842 err = get_cur_mix_value(cval, 0, &oval); 843 if (err < 0 && cval->mixer->ignore_ctl_error) 844 return 0; 845 if (err < 0) 846 return err; 847 val = ucontrol->value.integer.value[0]; 848 val = get_abs_value(cval, val); 849 if (val != oval) { 850 set_cur_mix_value(cval, 0, val); 851 changed = 1; 852 } 853 } 854 return changed; 855} 856 857static struct snd_kcontrol_new usb_feature_unit_ctl = { 858 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 859 .name = "", /* will be filled later manually */ 860 .info = mixer_ctl_feature_info, 861 .get = mixer_ctl_feature_get, 862 .put = mixer_ctl_feature_put, 863}; 864 865 866/* 867 * build a feature control 868 */ 869 870static void build_feature_ctl(struct mixer_build *state, unsigned char *desc, 871 unsigned int ctl_mask, int control, 872 struct usb_audio_term *iterm, int unitid) 873{ 874 unsigned int len = 0; 875 int mapped_name = 0; 876 int nameid = desc[desc[0] - 1]; 877 struct snd_kcontrol *kctl; 878 struct usb_mixer_elem_info *cval; 879 880 control++; /* change from zero-based to 1-based value */ 881 882 if (control == USB_FEATURE_GEQ) { 883 return; 884 } 885 886 if (check_ignored_ctl(state, unitid, control)) 887 return; 888 889 cval = kzalloc(sizeof(*cval), GFP_KERNEL); 890 if (! cval) { 891 snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 892 return; 893 } 894 cval->mixer = state->mixer; 895 cval->id = unitid; 896 cval->control = control; 897 cval->cmask = ctl_mask; 898 cval->val_type = audio_feature_info[control-1].type; 899 if (ctl_mask == 0) 900 cval->channels = 1; /* master channel */ 901 else { 902 int i, c = 0; 903 for (i = 0; i < 16; i++) 904 if (ctl_mask & (1 << i)) 905 c++; 906 cval->channels = c; 907 } 908 909 /* get min/max values */ 910 get_min_max(cval, 0); 911 912 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 913 if (! kctl) { 914 snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 915 kfree(cval); 916 return; 917 } 918 kctl->private_free = usb_mixer_elem_free; 919 920 len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name)); 921 mapped_name = len != 0; 922 if (! len && nameid) 923 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); 924 925 switch (control) { 926 case USB_FEATURE_MUTE: 927 case USB_FEATURE_VOLUME: 928 /* determine the control name. the rule is: 929 * - if a name id is given in descriptor, use it. 930 * - if the connected input can be determined, then use the name 931 * of terminal type. 932 * - if the connected output can be determined, use it. 933 * - otherwise, anonymous name. 934 */ 935 if (! len) { 936 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1); 937 if (! len) 938 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1); 939 if (! len) 940 len = snprintf(kctl->id.name, sizeof(kctl->id.name), 941 "Feature %d", unitid); 942 } 943 /* determine the stream direction: 944 * if the connected output is USB stream, then it's likely a 945 * capture stream. otherwise it should be playback (hopefully :) 946 */ 947 if (! mapped_name && ! (state->oterm.type >> 16)) { 948 if ((state->oterm.type & 0xff00) == 0x0100) { 949 len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name)); 950 } else { 951 len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name)); 952 } 953 } 954 strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume", 955 sizeof(kctl->id.name)); 956 if (control == USB_FEATURE_VOLUME) { 957 kctl->tlv.c = mixer_vol_tlv; 958 kctl->vd[0].access |= 959 SNDRV_CTL_ELEM_ACCESS_TLV_READ | 960 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; 961 } 962 break; 963 964 default: 965 if (! len) 966 strlcpy(kctl->id.name, audio_feature_info[control-1].name, 967 sizeof(kctl->id.name)); 968 break; 969 } 970 971 /* quirk for UDA1321/N101 */ 972 /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */ 973 /* is not very clear from datasheets */ 974 /* I hope that the min value is -15360 for newer firmware --jk */ 975 switch (state->chip->usb_id) { 976 case USB_ID(0x0471, 0x0101): 977 case USB_ID(0x0471, 0x0104): 978 case USB_ID(0x0471, 0x0105): 979 case USB_ID(0x0672, 0x1041): 980 if (!strcmp(kctl->id.name, "PCM Playback Volume") && 981 cval->min == -15616) { 982 snd_printk(KERN_INFO "using volume control quirk for the UDA1321/N101 chip\n"); 983 cval->max = -256; 984 } 985 } 986 987 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", 988 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res); 989 add_control_to_empty(state, kctl); 990} 991 992 993 994/* 995 * parse a feature unit 996 * 997 * most of controlls are defined here. 998 */ 999static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsigned char *ftr) 1000{ 1001 int channels, i, j; 1002 struct usb_audio_term iterm; 1003 unsigned int master_bits, first_ch_bits; 1004 int err, csize; 1005 1006 if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) { 1007 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid); 1008 return -EINVAL; 1009 } 1010 1011 /* parse the source unit */ 1012 if ((err = parse_audio_unit(state, ftr[4])) < 0) 1013 return err; 1014 1015 /* determine the input source type and name */ 1016 if (check_input_term(state, ftr[4], &iterm) < 0) 1017 return -EINVAL; 1018 1019 channels = (ftr[0] - 7) / csize - 1; 1020 1021 master_bits = snd_usb_combine_bytes(ftr + 6, csize); 1022 if (channels > 0) 1023 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize); 1024 else 1025 first_ch_bits = 0; 1026 /* check all control types */ 1027 for (i = 0; i < 10; i++) { 1028 unsigned int ch_bits = 0; 1029 for (j = 0; j < channels; j++) { 1030 unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize); 1031 if (mask & (1 << i)) 1032 ch_bits |= (1 << j); 1033 } 1034 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ 1035 build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid); 1036 if (master_bits & (1 << i)) 1037 build_feature_ctl(state, ftr, 0, i, &iterm, unitid); 1038 } 1039 1040 return 0; 1041} 1042 1043 1044/* 1045 * Mixer Unit 1046 */ 1047 1048/* 1049 * build a mixer unit control 1050 * 1051 * the callbacks are identical with feature unit. 1052 * input channel number (zero based) is given in control field instead. 1053 */ 1054 1055static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc, 1056 int in_pin, int in_ch, int unitid, 1057 struct usb_audio_term *iterm) 1058{ 1059 struct usb_mixer_elem_info *cval; 1060 unsigned int input_pins = desc[4]; 1061 unsigned int num_outs = desc[5 + input_pins]; 1062 unsigned int i, len; 1063 struct snd_kcontrol *kctl; 1064 1065 if (check_ignored_ctl(state, unitid, 0)) 1066 return; 1067 1068 cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1069 if (! cval) 1070 return; 1071 1072 cval->mixer = state->mixer; 1073 cval->id = unitid; 1074 cval->control = in_ch + 1; /* based on 1 */ 1075 cval->val_type = USB_MIXER_S16; 1076 for (i = 0; i < num_outs; i++) { 1077 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) { 1078 cval->cmask |= (1 << i); 1079 cval->channels++; 1080 } 1081 } 1082 1083 /* get min/max values */ 1084 get_min_max(cval, 0); 1085 1086 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 1087 if (! kctl) { 1088 snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1089 kfree(cval); 1090 return; 1091 } 1092 kctl->private_free = usb_mixer_elem_free; 1093 1094 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name)); 1095 if (! len) 1096 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0); 1097 if (! len) 1098 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); 1099 strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name)); 1100 1101 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n", 1102 cval->id, kctl->id.name, cval->channels, cval->min, cval->max); 1103 add_control_to_empty(state, kctl); 1104} 1105 1106 1107/* 1108 * parse a mixer unit 1109 */ 1110static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc) 1111{ 1112 struct usb_audio_term iterm; 1113 int input_pins, num_ins, num_outs; 1114 int pin, ich, err; 1115 1116 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) { 1117 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid); 1118 return -EINVAL; 1119 } 1120 /* no bmControls field (e.g. Maya44) -> ignore */ 1121 if (desc[0] <= 10 + input_pins) { 1122 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid); 1123 return 0; 1124 } 1125 1126 num_ins = 0; 1127 ich = 0; 1128 for (pin = 0; pin < input_pins; pin++) { 1129 err = parse_audio_unit(state, desc[5 + pin]); 1130 if (err < 0) 1131 return err; 1132 err = check_input_term(state, desc[5 + pin], &iterm); 1133 if (err < 0) 1134 return err; 1135 num_ins += iterm.channels; 1136 for (; ich < num_ins; ++ich) { 1137 int och, ich_has_controls = 0; 1138 1139 for (och = 0; och < num_outs; ++och) { 1140 if (check_matrix_bitmap(desc + 9 + input_pins, 1141 ich, och, num_outs)) { 1142 ich_has_controls = 1; 1143 break; 1144 } 1145 } 1146 if (ich_has_controls) 1147 build_mixer_unit_ctl(state, desc, pin, ich, 1148 unitid, &iterm); 1149 } 1150 } 1151 return 0; 1152} 1153 1154 1155/* 1156 * Processing Unit / Extension Unit 1157 */ 1158 1159/* get callback for processing/extension unit */ 1160static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1161{ 1162 struct usb_mixer_elem_info *cval = kcontrol->private_data; 1163 int err, val; 1164 1165 err = get_cur_ctl_value(cval, cval->control << 8, &val); 1166 if (err < 0 && cval->mixer->ignore_ctl_error) { 1167 ucontrol->value.integer.value[0] = cval->min; 1168 return 0; 1169 } 1170 if (err < 0) 1171 return err; 1172 val = get_relative_value(cval, val); 1173 ucontrol->value.integer.value[0] = val; 1174 return 0; 1175} 1176 1177/* put callback for processing/extension unit */ 1178static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1179{ 1180 struct usb_mixer_elem_info *cval = kcontrol->private_data; 1181 int val, oval, err; 1182 1183 err = get_cur_ctl_value(cval, cval->control << 8, &oval); 1184 if (err < 0) { 1185 if (cval->mixer->ignore_ctl_error) 1186 return 0; 1187 return err; 1188 } 1189 val = ucontrol->value.integer.value[0]; 1190 val = get_abs_value(cval, val); 1191 if (val != oval) { 1192 set_cur_ctl_value(cval, cval->control << 8, val); 1193 return 1; 1194 } 1195 return 0; 1196} 1197 1198/* alsa control interface for processing/extension unit */ 1199static struct snd_kcontrol_new mixer_procunit_ctl = { 1200 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1201 .name = "", /* will be filled later */ 1202 .info = mixer_ctl_feature_info, 1203 .get = mixer_ctl_procunit_get, 1204 .put = mixer_ctl_procunit_put, 1205}; 1206 1207 1208/* 1209 * predefined data for processing units 1210 */ 1211struct procunit_value_info { 1212 int control; 1213 char *suffix; 1214 int val_type; 1215 int min_value; 1216}; 1217 1218struct procunit_info { 1219 int type; 1220 char *name; 1221 struct procunit_value_info *values; 1222}; 1223 1224static struct procunit_value_info updown_proc_info[] = { 1225 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1226 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, 1227 { 0 } 1228}; 1229static struct procunit_value_info prologic_proc_info[] = { 1230 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1231 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, 1232 { 0 } 1233}; 1234static struct procunit_value_info threed_enh_proc_info[] = { 1235 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1236 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 }, 1237 { 0 } 1238}; 1239static struct procunit_value_info reverb_proc_info[] = { 1240 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1241 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, 1242 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 }, 1243 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 }, 1244 { 0 } 1245}; 1246static struct procunit_value_info chorus_proc_info[] = { 1247 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1248 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, 1249 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, 1250 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, 1251 { 0 } 1252}; 1253static struct procunit_value_info dcr_proc_info[] = { 1254 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1255 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 }, 1256 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 }, 1257 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, 1258 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 }, 1259 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 }, 1260 { 0 } 1261}; 1262 1263static struct procunit_info procunits[] = { 1264 { USB_PROC_UPDOWN, "Up Down", updown_proc_info }, 1265 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info }, 1266 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info }, 1267 { USB_PROC_REVERB, "Reverb", reverb_proc_info }, 1268 { USB_PROC_CHORUS, "Chorus", chorus_proc_info }, 1269 { USB_PROC_DCR, "DCR", dcr_proc_info }, 1270 { 0 }, 1271}; 1272 1273/* 1274 * build a processing/extension unit 1275 */ 1276static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name) 1277{ 1278 int num_ins = dsc[6]; 1279 struct usb_mixer_elem_info *cval; 1280 struct snd_kcontrol *kctl; 1281 int i, err, nameid, type, len; 1282 struct procunit_info *info; 1283 struct procunit_value_info *valinfo; 1284 static struct procunit_value_info default_value_info[] = { 1285 { 0x01, "Switch", USB_MIXER_BOOLEAN }, 1286 { 0 } 1287 }; 1288 static struct procunit_info default_info = { 1289 0, NULL, default_value_info 1290 }; 1291 1292 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) { 1293 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid); 1294 return -EINVAL; 1295 } 1296 1297 for (i = 0; i < num_ins; i++) { 1298 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0) 1299 return err; 1300 } 1301 1302 type = combine_word(&dsc[4]); 1303 for (info = list; info && info->type; info++) 1304 if (info->type == type) 1305 break; 1306 if (! info || ! info->type) 1307 info = &default_info; 1308 1309 for (valinfo = info->values; valinfo->control; valinfo++) { 1310 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1)))) 1311 continue; 1312 if (check_ignored_ctl(state, unitid, valinfo->control)) 1313 continue; 1314 cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1315 if (! cval) { 1316 snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1317 return -ENOMEM; 1318 } 1319 cval->mixer = state->mixer; 1320 cval->id = unitid; 1321 cval->control = valinfo->control; 1322 cval->val_type = valinfo->val_type; 1323 cval->channels = 1; 1324 1325 /* get min/max values */ 1326 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) { 1327 cval->min = 1; 1328 cval->max = dsc[15]; 1329 cval->res = 1; 1330 cval->initialized = 1; 1331 } else 1332 get_min_max(cval, valinfo->min_value); 1333 1334 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); 1335 if (! kctl) { 1336 snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1337 kfree(cval); 1338 return -ENOMEM; 1339 } 1340 kctl->private_free = usb_mixer_elem_free; 1341 1342 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name))) 1343 ; 1344 else if (info->name) 1345 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); 1346 else { 1347 nameid = dsc[12 + num_ins + dsc[11 + num_ins]]; 1348 len = 0; 1349 if (nameid) 1350 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); 1351 if (! len) 1352 strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); 1353 } 1354 strlcat(kctl->id.name, " ", sizeof(kctl->id.name)); 1355 strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name)); 1356 1357 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n", 1358 cval->id, kctl->id.name, cval->channels, cval->min, cval->max); 1359 if ((err = add_control_to_empty(state, kctl)) < 0) 1360 return err; 1361 } 1362 return 0; 1363} 1364 1365 1366static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc) 1367{ 1368 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit"); 1369} 1370 1371static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc) 1372{ 1373 return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit"); 1374} 1375 1376 1377/* 1378 * Selector Unit 1379 */ 1380 1381/* info callback for selector unit 1382 * use an enumerator type for routing 1383 */ 1384static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 1385{ 1386 struct usb_mixer_elem_info *cval = kcontrol->private_data; 1387 char **itemlist = (char **)kcontrol->private_value; 1388 1389 snd_assert(itemlist, return -EINVAL); 1390 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 1391 uinfo->count = 1; 1392 uinfo->value.enumerated.items = cval->max; 1393 if ((int)uinfo->value.enumerated.item >= cval->max) 1394 uinfo->value.enumerated.item = cval->max - 1; 1395 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]); 1396 return 0; 1397} 1398 1399/* get callback for selector unit */ 1400static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1401{ 1402 struct usb_mixer_elem_info *cval = kcontrol->private_data; 1403 int val, err; 1404 1405 err = get_cur_ctl_value(cval, 0, &val); 1406 if (err < 0) { 1407 if (cval->mixer->ignore_ctl_error) { 1408 ucontrol->value.enumerated.item[0] = 0; 1409 return 0; 1410 } 1411 return err; 1412 } 1413 val = get_relative_value(cval, val); 1414 ucontrol->value.enumerated.item[0] = val; 1415 return 0; 1416} 1417 1418/* put callback for selector unit */ 1419static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1420{ 1421 struct usb_mixer_elem_info *cval = kcontrol->private_data; 1422 int val, oval, err; 1423 1424 err = get_cur_ctl_value(cval, 0, &oval); 1425 if (err < 0) { 1426 if (cval->mixer->ignore_ctl_error) 1427 return 0; 1428 return err; 1429 } 1430 val = ucontrol->value.enumerated.item[0]; 1431 val = get_abs_value(cval, val); 1432 if (val != oval) { 1433 set_cur_ctl_value(cval, 0, val); 1434 return 1; 1435 } 1436 return 0; 1437} 1438 1439/* alsa control interface for selector unit */ 1440static struct snd_kcontrol_new mixer_selectunit_ctl = { 1441 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1442 .name = "", /* will be filled later */ 1443 .info = mixer_ctl_selector_info, 1444 .get = mixer_ctl_selector_get, 1445 .put = mixer_ctl_selector_put, 1446}; 1447 1448 1449/* private free callback. 1450 * free both private_data and private_value 1451 */ 1452static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) 1453{ 1454 int i, num_ins = 0; 1455 1456 if (kctl->private_data) { 1457 struct usb_mixer_elem_info *cval = kctl->private_data; 1458 num_ins = cval->max; 1459 kfree(cval); 1460 kctl->private_data = NULL; 1461 } 1462 if (kctl->private_value) { 1463 char **itemlist = (char **)kctl->private_value; 1464 for (i = 0; i < num_ins; i++) 1465 kfree(itemlist[i]); 1466 kfree(itemlist); 1467 kctl->private_value = 0; 1468 } 1469} 1470 1471/* 1472 * parse a selector unit 1473 */ 1474static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc) 1475{ 1476 unsigned int num_ins = desc[4]; 1477 unsigned int i, nameid, len; 1478 int err; 1479 struct usb_mixer_elem_info *cval; 1480 struct snd_kcontrol *kctl; 1481 char **namelist; 1482 1483 if (! num_ins || desc[0] < 6 + num_ins) { 1484 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid); 1485 return -EINVAL; 1486 } 1487 1488 for (i = 0; i < num_ins; i++) { 1489 if ((err = parse_audio_unit(state, desc[5 + i])) < 0) 1490 return err; 1491 } 1492 1493 if (num_ins == 1) /* only one ? nonsense! */ 1494 return 0; 1495 1496 if (check_ignored_ctl(state, unitid, 0)) 1497 return 0; 1498 1499 cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1500 if (! cval) { 1501 snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1502 return -ENOMEM; 1503 } 1504 cval->mixer = state->mixer; 1505 cval->id = unitid; 1506 cval->val_type = USB_MIXER_U8; 1507 cval->channels = 1; 1508 cval->min = 1; 1509 cval->max = num_ins; 1510 cval->res = 1; 1511 cval->initialized = 1; 1512 1513 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL); 1514 if (! namelist) { 1515 snd_printk(KERN_ERR "cannot malloc\n"); 1516 kfree(cval); 1517 return -ENOMEM; 1518 } 1519#define MAX_ITEM_NAME_LEN 64 1520 for (i = 0; i < num_ins; i++) { 1521 struct usb_audio_term iterm; 1522 len = 0; 1523 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); 1524 if (! namelist[i]) { 1525 snd_printk(KERN_ERR "cannot malloc\n"); 1526 while (i--) 1527 kfree(namelist[i]); 1528 kfree(namelist); 1529 kfree(cval); 1530 return -ENOMEM; 1531 } 1532 len = check_mapped_selector_name(state, unitid, i, namelist[i], 1533 MAX_ITEM_NAME_LEN); 1534 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0) 1535 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); 1536 if (! len) 1537 sprintf(namelist[i], "Input %d", i); 1538 } 1539 1540 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); 1541 if (! kctl) { 1542 snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1543 kfree(namelist); 1544 kfree(cval); 1545 return -ENOMEM; 1546 } 1547 kctl->private_value = (unsigned long)namelist; 1548 kctl->private_free = usb_mixer_selector_elem_free; 1549 1550 nameid = desc[desc[0] - 1]; 1551 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name)); 1552 if (len) 1553 ; 1554 else if (nameid) 1555 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); 1556 else { 1557 len = get_term_name(state, &state->oterm, 1558 kctl->id.name, sizeof(kctl->id.name), 0); 1559 if (! len) 1560 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); 1561 1562 if ((state->oterm.type & 0xff00) == 0x0100) 1563 strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name)); 1564 else 1565 strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name)); 1566 } 1567 1568 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n", 1569 cval->id, kctl->id.name, num_ins); 1570 if ((err = add_control_to_empty(state, kctl)) < 0) 1571 return err; 1572 1573 return 0; 1574} 1575 1576 1577/* 1578 * parse an audio unit recursively 1579 */ 1580 1581static int parse_audio_unit(struct mixer_build *state, int unitid) 1582{ 1583 unsigned char *p1; 1584 1585 if (test_and_set_bit(unitid, state->unitbitmap)) 1586 return 0; /* the unit already visited */ 1587 1588 p1 = find_audio_control_unit(state, unitid); 1589 if (!p1) { 1590 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid); 1591 return -EINVAL; 1592 } 1593 1594 switch (p1[2]) { 1595 case INPUT_TERMINAL: 1596 return 0; /* NOP */ 1597 case MIXER_UNIT: 1598 return parse_audio_mixer_unit(state, unitid, p1); 1599 case SELECTOR_UNIT: 1600 return parse_audio_selector_unit(state, unitid, p1); 1601 case FEATURE_UNIT: 1602 return parse_audio_feature_unit(state, unitid, p1); 1603 case PROCESSING_UNIT: 1604 return parse_audio_processing_unit(state, unitid, p1); 1605 case EXTENSION_UNIT: 1606 return parse_audio_extension_unit(state, unitid, p1); 1607 default: 1608 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); 1609 return -EINVAL; 1610 } 1611} 1612 1613static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) 1614{ 1615 kfree(mixer->id_elems); 1616 if (mixer->urb) { 1617 kfree(mixer->urb->transfer_buffer); 1618 usb_free_urb(mixer->urb); 1619 } 1620 usb_free_urb(mixer->rc_urb); 1621 kfree(mixer->rc_setup_packet); 1622 kfree(mixer); 1623} 1624 1625static int snd_usb_mixer_dev_free(struct snd_device *device) 1626{ 1627 struct usb_mixer_interface *mixer = device->device_data; 1628 snd_usb_mixer_free(mixer); 1629 return 0; 1630} 1631 1632/* 1633 * create mixer controls 1634 * 1635 * walk through all OUTPUT_TERMINAL descriptors to search for mixers 1636 */ 1637static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) 1638{ 1639 unsigned char *desc; 1640 struct mixer_build state; 1641 int err; 1642 const struct usbmix_ctl_map *map; 1643 struct usb_host_interface *hostif; 1644 1645 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; 1646 memset(&state, 0, sizeof(state)); 1647 state.chip = mixer->chip; 1648 state.mixer = mixer; 1649 state.buffer = hostif->extra; 1650 state.buflen = hostif->extralen; 1651 1652 /* check the mapping table */ 1653 for (map = usbmix_ctl_maps; map->id; map++) { 1654 if (map->id == state.chip->usb_id) { 1655 state.map = map->map; 1656 state.selector_map = map->selector_map; 1657 mixer->ignore_ctl_error = map->ignore_ctl_error; 1658 break; 1659 } 1660 } 1661 1662 desc = NULL; 1663 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) { 1664 if (desc[0] < 9) 1665 continue; /* invalid descriptor? */ 1666 set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */ 1667 state.oterm.id = desc[3]; 1668 state.oterm.type = combine_word(&desc[4]); 1669 state.oterm.name = desc[8]; 1670 err = parse_audio_unit(&state, desc[7]); 1671 if (err < 0) 1672 return err; 1673 } 1674 return 0; 1675} 1676 1677static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, 1678 int unitid) 1679{ 1680 struct usb_mixer_elem_info *info; 1681 1682 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) 1683 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 1684 info->elem_id); 1685} 1686 1687static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer, 1688 int unitid) 1689{ 1690 if (!mixer->rc_cfg) 1691 return; 1692 /* unit ids specific to Extigy/Audigy 2 NX: */ 1693 switch (unitid) { 1694 case 0: /* remote control */ 1695 mixer->rc_urb->dev = mixer->chip->dev; 1696 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC); 1697 break; 1698 case 4: /* digital in jack */ 1699 case 7: /* line in jacks */ 1700 case 19: /* speaker out jacks */ 1701 case 20: /* headphones out jack */ 1702 break; 1703 default: 1704 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid); 1705 break; 1706 } 1707} 1708 1709static void snd_usb_mixer_status_complete(struct urb *urb) 1710{ 1711 struct usb_mixer_interface *mixer = urb->context; 1712 1713 if (urb->status == 0) { 1714 u8 *buf = urb->transfer_buffer; 1715 int i; 1716 1717 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) { 1718 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n", 1719 buf[0], buf[1]); 1720 /* ignore any notifications not from the control interface */ 1721 if ((buf[0] & 0x0f) != 0) 1722 continue; 1723 if (!(buf[0] & 0x40)) 1724 snd_usb_mixer_notify_id(mixer, buf[1]); 1725 else 1726 snd_usb_mixer_memory_change(mixer, buf[1]); 1727 } 1728 } 1729 if (urb->status != -ENOENT && urb->status != -ECONNRESET) { 1730 urb->dev = mixer->chip->dev; 1731 usb_submit_urb(urb, GFP_ATOMIC); 1732 } 1733} 1734 1735/* create the handler for the optional status interrupt endpoint */ 1736static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) 1737{ 1738 struct usb_host_interface *hostif; 1739 struct usb_endpoint_descriptor *ep; 1740 void *transfer_buffer; 1741 int buffer_length; 1742 unsigned int epnum; 1743 1744 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; 1745 /* we need one interrupt input endpoint */ 1746 if (get_iface_desc(hostif)->bNumEndpoints < 1) 1747 return 0; 1748 ep = get_endpoint(hostif, 0); 1749 if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN || 1750 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) 1751 return 0; 1752 1753 epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; 1754 buffer_length = le16_to_cpu(ep->wMaxPacketSize); 1755 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); 1756 if (!transfer_buffer) 1757 return -ENOMEM; 1758 mixer->urb = usb_alloc_urb(0, GFP_KERNEL); 1759 if (!mixer->urb) { 1760 kfree(transfer_buffer); 1761 return -ENOMEM; 1762 } 1763 usb_fill_int_urb(mixer->urb, mixer->chip->dev, 1764 usb_rcvintpipe(mixer->chip->dev, epnum), 1765 transfer_buffer, buffer_length, 1766 snd_usb_mixer_status_complete, mixer, ep->bInterval); 1767 usb_submit_urb(mixer->urb, GFP_KERNEL); 1768 return 0; 1769} 1770 1771static void snd_usb_soundblaster_remote_complete(struct urb *urb) 1772{ 1773 struct usb_mixer_interface *mixer = urb->context; 1774 const struct rc_config *rc = mixer->rc_cfg; 1775 u32 code; 1776 1777 if (urb->status < 0 || urb->actual_length < rc->packet_length) 1778 return; 1779 1780 code = mixer->rc_buffer[rc->offset]; 1781 if (rc->length == 2) 1782 code |= mixer->rc_buffer[rc->offset + 1] << 8; 1783 1784 /* the Mute button actually changes the mixer control */ 1785 if (code == rc->mute_code) 1786 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id); 1787 mixer->rc_code = code; 1788 wmb(); 1789 wake_up(&mixer->rc_waitq); 1790} 1791 1792static int snd_usb_sbrc_hwdep_open(struct snd_hwdep *hw, struct file *file) 1793{ 1794 struct usb_mixer_interface *mixer = hw->private_data; 1795 1796 if (test_and_set_bit(0, &mixer->rc_hwdep_open)) 1797 return -EBUSY; 1798 return 0; 1799} 1800 1801static int snd_usb_sbrc_hwdep_release(struct snd_hwdep *hw, struct file *file) 1802{ 1803 struct usb_mixer_interface *mixer = hw->private_data; 1804 1805 clear_bit(0, &mixer->rc_hwdep_open); 1806 smp_mb__after_clear_bit(); 1807 return 0; 1808} 1809 1810static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf, 1811 long count, loff_t *offset) 1812{ 1813 struct usb_mixer_interface *mixer = hw->private_data; 1814 int err; 1815 u32 rc_code; 1816 1817 if (count != 1 && count != 4) 1818 return -EINVAL; 1819 err = wait_event_interruptible(mixer->rc_waitq, 1820 (rc_code = xchg(&mixer->rc_code, 0)) != 0); 1821 if (err == 0) { 1822 if (count == 1) 1823 err = put_user(rc_code, buf); 1824 else 1825 err = put_user(rc_code, (u32 __user *)buf); 1826 } 1827 return err < 0 ? err : count; 1828} 1829 1830static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file, 1831 poll_table *wait) 1832{ 1833 struct usb_mixer_interface *mixer = hw->private_data; 1834 1835 poll_wait(file, &mixer->rc_waitq, wait); 1836 return mixer->rc_code ? POLLIN | POLLRDNORM : 0; 1837} 1838 1839static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer) 1840{ 1841 struct snd_hwdep *hwdep; 1842 int err, len, i; 1843 1844 for (i = 0; i < ARRAY_SIZE(rc_configs); ++i) 1845 if (rc_configs[i].usb_id == mixer->chip->usb_id) 1846 break; 1847 if (i >= ARRAY_SIZE(rc_configs)) 1848 return 0; 1849 mixer->rc_cfg = &rc_configs[i]; 1850 1851 len = mixer->rc_cfg->packet_length; 1852 1853 init_waitqueue_head(&mixer->rc_waitq); 1854 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep); 1855 if (err < 0) 1856 return err; 1857 snprintf(hwdep->name, sizeof(hwdep->name), 1858 "%s remote control", mixer->chip->card->shortname); 1859 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC; 1860 hwdep->private_data = mixer; 1861 hwdep->ops.read = snd_usb_sbrc_hwdep_read; 1862 hwdep->ops.open = snd_usb_sbrc_hwdep_open; 1863 hwdep->ops.release = snd_usb_sbrc_hwdep_release; 1864 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll; 1865 1866 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL); 1867 if (!mixer->rc_urb) 1868 return -ENOMEM; 1869 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL); 1870 if (!mixer->rc_setup_packet) { 1871 usb_free_urb(mixer->rc_urb); 1872 mixer->rc_urb = NULL; 1873 return -ENOMEM; 1874 } 1875 mixer->rc_setup_packet->bRequestType = 1876 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 1877 mixer->rc_setup_packet->bRequest = GET_MEM; 1878 mixer->rc_setup_packet->wValue = cpu_to_le16(0); 1879 mixer->rc_setup_packet->wIndex = cpu_to_le16(0); 1880 mixer->rc_setup_packet->wLength = cpu_to_le16(len); 1881 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev, 1882 usb_rcvctrlpipe(mixer->chip->dev, 0), 1883 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len, 1884 snd_usb_soundblaster_remote_complete, mixer); 1885 return 0; 1886} 1887 1888static int snd_audigy2nx_led_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 1889{ 1890 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 1891 uinfo->count = 1; 1892 uinfo->value.integer.min = 0; 1893 uinfo->value.integer.max = 1; 1894 return 0; 1895} 1896 1897static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1898{ 1899 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); 1900 int index = kcontrol->private_value; 1901 1902 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index]; 1903 return 0; 1904} 1905 1906static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1907{ 1908 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); 1909 int index = kcontrol->private_value; 1910 int value = ucontrol->value.integer.value[0]; 1911 int err, changed; 1912 1913 if (value > 1) 1914 return -EINVAL; 1915 changed = value != mixer->audigy2nx_leds[index]; 1916 err = snd_usb_ctl_msg(mixer->chip->dev, 1917 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24, 1918 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, 1919 value, index + 2, NULL, 0, 100); 1920 if (err < 0) 1921 return err; 1922 mixer->audigy2nx_leds[index] = value; 1923 return changed; 1924} 1925 1926static struct snd_kcontrol_new snd_audigy2nx_controls[] = { 1927 { 1928 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1929 .name = "CMSS LED Switch", 1930 .info = snd_audigy2nx_led_info, 1931 .get = snd_audigy2nx_led_get, 1932 .put = snd_audigy2nx_led_put, 1933 .private_value = 0, 1934 }, 1935 { 1936 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1937 .name = "Power LED Switch", 1938 .info = snd_audigy2nx_led_info, 1939 .get = snd_audigy2nx_led_get, 1940 .put = snd_audigy2nx_led_put, 1941 .private_value = 1, 1942 }, 1943 { 1944 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1945 .name = "Dolby Digital LED Switch", 1946 .info = snd_audigy2nx_led_info, 1947 .get = snd_audigy2nx_led_get, 1948 .put = snd_audigy2nx_led_put, 1949 .private_value = 2, 1950 }, 1951}; 1952 1953static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer) 1954{ 1955 int i, err; 1956 1957 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) { 1958 err = snd_ctl_add(mixer->chip->card, 1959 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer)); 1960 if (err < 0) 1961 return err; 1962 } 1963 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */ 1964 return 0; 1965} 1966 1967static void snd_audigy2nx_proc_read(struct snd_info_entry *entry, 1968 struct snd_info_buffer *buffer) 1969{ 1970 static const struct { 1971 int unitid; 1972 const char *name; 1973 } jacks[] = { 1974 {4, "dig in "}, 1975 {7, "line in"}, 1976 {19, "spk out"}, 1977 {20, "hph out"}, 1978 }; 1979 struct usb_mixer_interface *mixer = entry->private_data; 1980 int i, err; 1981 u8 buf[3]; 1982 1983 snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname); 1984 for (i = 0; i < ARRAY_SIZE(jacks); ++i) { 1985 snd_iprintf(buffer, "%s: ", jacks[i].name); 1986 err = snd_usb_ctl_msg(mixer->chip->dev, 1987 usb_rcvctrlpipe(mixer->chip->dev, 0), 1988 GET_MEM, USB_DIR_IN | USB_TYPE_CLASS | 1989 USB_RECIP_INTERFACE, 0, 1990 jacks[i].unitid << 8, buf, 3, 100); 1991 if (err == 3 && buf[0] == 3) 1992 snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]); 1993 else 1994 snd_iprintf(buffer, "?\n"); 1995 } 1996} 1997 1998int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif) 1999{ 2000 static struct snd_device_ops dev_ops = { 2001 .dev_free = snd_usb_mixer_dev_free 2002 }; 2003 struct usb_mixer_interface *mixer; 2004 int err; 2005 2006 strcpy(chip->card->mixername, "USB Mixer"); 2007 2008 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); 2009 if (!mixer) 2010 return -ENOMEM; 2011 mixer->chip = chip; 2012 mixer->ctrlif = ctrlif; 2013#ifdef IGNORE_CTL_ERROR 2014 mixer->ignore_ctl_error = 1; 2015#endif 2016 mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL); 2017 if (!mixer->id_elems) { 2018 kfree(mixer); 2019 return -ENOMEM; 2020 } 2021 2022 if ((err = snd_usb_mixer_controls(mixer)) < 0 || 2023 (err = snd_usb_mixer_status_create(mixer)) < 0) 2024 goto _error; 2025 2026 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0) 2027 goto _error; 2028 2029 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) { 2030 struct snd_info_entry *entry; 2031 2032 if ((err = snd_audigy2nx_controls_create(mixer)) < 0) 2033 goto _error; 2034 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry)) 2035 snd_info_set_text_ops(entry, mixer, 2036 snd_audigy2nx_proc_read); 2037 } 2038 2039 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); 2040 if (err < 0) 2041 goto _error; 2042 list_add(&mixer->list, &chip->mixer_list); 2043 return 0; 2044 2045_error: 2046 snd_usb_mixer_free(mixer); 2047 return err; 2048} 2049 2050void snd_usb_mixer_disconnect(struct list_head *p) 2051{ 2052 struct usb_mixer_interface *mixer; 2053 2054 mixer = list_entry(p, struct usb_mixer_interface, list); 2055 usb_kill_urb(mixer->urb); 2056 usb_kill_urb(mixer->rc_urb); 2057} 2058