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[ALSA] usb-audio - remove superfluous LIRC ioctls
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / usbmixer.c
CommitLineData
1da177e4
LT		 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>
b259b10c 38#include <sound/hwdep.h>
1da177e4
LT		 39
40#include "usbaudio.h"
41
1da177e4
LT		 42/*
43 */
44
45/* ignore error from controls - for debugging */
46/* #define IGNORE_CTL_ERROR */
47
48typedef struct usb_mixer_build mixer_build_t;
49typedef struct usb_audio_term usb_audio_term_t;
50typedef struct usb_mixer_elem_info usb_mixer_elem_info_t;
51
52
84957a8a
CL		 53struct usb_mixer_interface {
54 snd_usb_audio_t *chip;
55 unsigned int ctrlif;
56 struct list_head list;
57 unsigned int ignore_ctl_error;
6639b6c2
CL		 58 struct urb *urb;
59 usb_mixer_elem_info_t **id_elems; /* array[256], indexed by unit id */
b259b10c
CL		 60
61 /* Sound Blaster remote control stuff */
62 enum {
63 RC_NONE,
64 RC_EXTIGY,
65 RC_AUDIGY2NX,
66 } rc_type;
67 unsigned long rc_hwdep_open;
68 u32 rc_code;
69 wait_queue_head_t rc_waitq;
70 struct urb *rc_urb;
71 struct usb_ctrlrequest *rc_setup_packet;
72 u8 rc_buffer[6];
93446edc
CL		 73
74 u8 audigy2nx_leds[3];
84957a8a
CL		 75};
76
77
1da177e4
LT		 78struct usb_audio_term {
79 int id;
80 int type;
81 int channels;
82 unsigned int chconfig;
83 int name;
84};
85
86struct usbmix_name_map;
87
88struct usb_mixer_build {
89 snd_usb_audio_t *chip;
84957a8a 90 struct usb_mixer_interface *mixer;
1da177e4
LT		 91 unsigned char *buffer;
92 unsigned int buflen;
707e6073 93 DECLARE_BITMAP(unitbitmap, 256);
1da177e4
LT		 94 usb_audio_term_t oterm;
95 const struct usbmix_name_map *map;
8e062ec7 96 const struct usbmix_selector_map *selector_map;
1da177e4
LT		 97};
98
99struct usb_mixer_elem_info {
84957a8a 100 struct usb_mixer_interface *mixer;
6639b6c2
CL		 101 usb_mixer_elem_info_t *next_id_elem; /* list of controls with same id */
102 snd_ctl_elem_id_t *elem_id;
1da177e4
LT		 103 unsigned int id;
104 unsigned int control; /* CS or ICN (high byte) */
105 unsigned int cmask; /* channel mask bitmap: 0 = master */
106 int channels;
107 int val_type;
108 int min, max, res;
6639b6c2 109 u8 initialized;
1da177e4
LT		 110};
111
112
113enum {
114 USB_FEATURE_NONE = 0,
115 USB_FEATURE_MUTE = 1,
116 USB_FEATURE_VOLUME,
117 USB_FEATURE_BASS,
118 USB_FEATURE_MID,
119 USB_FEATURE_TREBLE,
120 USB_FEATURE_GEQ,
121 USB_FEATURE_AGC,
122 USB_FEATURE_DELAY,
123 USB_FEATURE_BASSBOOST,
124 USB_FEATURE_LOUDNESS
125};
126
127enum {
128 USB_MIXER_BOOLEAN,
129 USB_MIXER_INV_BOOLEAN,
130 USB_MIXER_S8,
131 USB_MIXER_U8,
132 USB_MIXER_S16,
133 USB_MIXER_U16,
134};
135
136enum {
137 USB_PROC_UPDOWN = 1,
138 USB_PROC_UPDOWN_SWITCH = 1,
139 USB_PROC_UPDOWN_MODE_SEL = 2,
140
141 USB_PROC_PROLOGIC = 2,
142 USB_PROC_PROLOGIC_SWITCH = 1,
143 USB_PROC_PROLOGIC_MODE_SEL = 2,
144
145 USB_PROC_3DENH = 3,
146 USB_PROC_3DENH_SWITCH = 1,
147 USB_PROC_3DENH_SPACE = 2,
148
149 USB_PROC_REVERB = 4,
150 USB_PROC_REVERB_SWITCH = 1,
151 USB_PROC_REVERB_LEVEL = 2,
152 USB_PROC_REVERB_TIME = 3,
153 USB_PROC_REVERB_DELAY = 4,
154
155 USB_PROC_CHORUS = 5,
156 USB_PROC_CHORUS_SWITCH = 1,
157 USB_PROC_CHORUS_LEVEL = 2,
158 USB_PROC_CHORUS_RATE = 3,
159 USB_PROC_CHORUS_DEPTH = 4,
160
161 USB_PROC_DCR = 6,
162 USB_PROC_DCR_SWITCH = 1,
163 USB_PROC_DCR_RATIO = 2,
164 USB_PROC_DCR_MAX_AMP = 3,
165 USB_PROC_DCR_THRESHOLD = 4,
166 USB_PROC_DCR_ATTACK = 5,
167 USB_PROC_DCR_RELEASE = 6,
168};
169
170#define MAX_CHANNELS 10 /* max logical channels */
171
172
173/*
174 * manual mapping of mixer names
175 * if the mixer topology is too complicated and the parsed names are
176 * ambiguous, add the entries in usbmixer_maps.c.
177 */
178#include "usbmixer_maps.c"
179
180/* get the mapped name if the unit matches */
181static int check_mapped_name(mixer_build_t *state, int unitid, int control, char *buf, int buflen)
182{
183 const struct usbmix_name_map *p;
184
185 if (! state->map)
186 return 0;
187
188 for (p = state->map; p->id; p++) {
189 if (p->id == unitid && p->name &&
190 (! control || ! p->control || control == p->control)) {
191 buflen--;
192 return strlcpy(buf, p->name, buflen);
193 }
194 }
195 return 0;
196}
197
198/* check whether the control should be ignored */
199static int check_ignored_ctl(mixer_build_t *state, int unitid, int control)
200{
201 const struct usbmix_name_map *p;
202
203 if (! state->map)
204 return 0;
205 for (p = state->map; p->id; p++) {
206 if (p->id == unitid && ! p->name &&
207 (! control || ! p->control || control == p->control)) {
208 // printk("ignored control %d:%d\n", unitid, control);
209 return 1;
210 }
211 }
212 return 0;
213}
214
8e062ec7
CL		 215/* get the mapped selector source name */
216static int check_mapped_selector_name(mixer_build_t *state, int unitid,
217 int index, char *buf, int buflen)
218{
219 const struct usbmix_selector_map *p;
220
221 if (! state->selector_map)
222 return 0;
223 for (p = state->selector_map; p->id; p++) {
224 if (p->id == unitid && index < p->count)
225 return strlcpy(buf, p->names[index], buflen);
226 }
227 return 0;
228}
229
1da177e4
LT		 230/*
231 * find an audio control unit with the given unit id
232 */
233static void *find_audio_control_unit(mixer_build_t *state, unsigned char unit)
234{
235 unsigned char *p;
236
237 p = NULL;
238 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
239 USB_DT_CS_INTERFACE)) != NULL) {
240 if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
241 return p;
242 }
243 return NULL;
244}
245
246
247/*
248 * copy a string with the given id
249 */
250static int snd_usb_copy_string_desc(mixer_build_t *state, int index, char *buf, int maxlen)
251{
252 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
253 buf[len] = 0;
254 return len;
255}
256
257/*
258 * convert from the byte/word on usb descriptor to the zero-based integer
259 */
260static int convert_signed_value(usb_mixer_elem_info_t *cval, int val)
261{
262 switch (cval->val_type) {
263 case USB_MIXER_BOOLEAN:
264 return !!val;
265 case USB_MIXER_INV_BOOLEAN:
266 return !val;
267 case USB_MIXER_U8:
268 val &= 0xff;
269 break;
270 case USB_MIXER_S8:
271 val &= 0xff;
272 if (val >= 0x80)
273 val -= 0x100;
274 break;
275 case USB_MIXER_U16:
276 val &= 0xffff;
277 break;
278 case USB_MIXER_S16:
279 val &= 0xffff;
280 if (val >= 0x8000)
281 val -= 0x10000;
282 break;
283 }
284 return val;
285}
286
287/*
288 * convert from the zero-based int to the byte/word for usb descriptor
289 */
290static int convert_bytes_value(usb_mixer_elem_info_t *cval, int val)
291{
292 switch (cval->val_type) {
293 case USB_MIXER_BOOLEAN:
294 return !!val;
295 case USB_MIXER_INV_BOOLEAN:
296 return !val;
297 case USB_MIXER_S8:
298 case USB_MIXER_U8:
299 return val & 0xff;
300 case USB_MIXER_S16:
301 case USB_MIXER_U16:
302 return val & 0xffff;
303 }
304 return 0; /* not reached */
305}
306
307static int get_relative_value(usb_mixer_elem_info_t *cval, int val)
308{
309 if (! cval->res)
310 cval->res = 1;
311 if (val < cval->min)
312 return 0;
313 else if (val > cval->max)
314 return (cval->max - cval->min) / cval->res;
315 else
316 return (val - cval->min) / cval->res;
317}
318
319static int get_abs_value(usb_mixer_elem_info_t *cval, int val)
320{
321 if (val < 0)
322 return cval->min;
323 if (! cval->res)
324 cval->res = 1;
325 val *= cval->res;
326 val += cval->min;
327 if (val > cval->max)
328 return cval->max;
329 return val;
330}
331
332
333/*
334 * retrieve a mixer value
335 */
336
337static int get_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int *value_ret)
338{
339 unsigned char buf[2];
340 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
341 int timeout = 10;
342
343 while (timeout-- > 0) {
84957a8a
CL		 344 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
345 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 346 request,
347 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
84957a8a 348 validx, cval->mixer->ctrlif | (cval->id << 8),
1da177e4
LT		 349 buf, val_len, 100) >= 0) {
350 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
351 return 0;
352 }
353 }
84957a8a
CL		 354 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
355 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
1da177e4
LT		 356 return -EINVAL;
357}
358
359static int get_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int *value)
360{
361 return get_ctl_value(cval, GET_CUR, validx, value);
362}
363
364/* channel = 0: master, 1 = first channel */
365inline static int get_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int *value)
366{
367 return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value);
368}
369
370/*
371 * set a mixer value
372 */
373
374static int set_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int value_set)
375{
376 unsigned char buf[2];
377 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
378 int timeout = 10;
379
380 value_set = convert_bytes_value(cval, value_set);
381 buf[0] = value_set & 0xff;
382 buf[1] = (value_set >> 8) & 0xff;
383 while (timeout -- > 0)
84957a8a
CL		 384 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
385 usb_sndctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 386 request,
387 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
84957a8a 388 validx, cval->mixer->ctrlif | (cval->id << 8),
1da177e4
LT		 389 buf, val_len, 100) >= 0)
390 return 0;
84957a8a
CL		 391 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
392 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
1da177e4
LT		 393 return -EINVAL;
394}
395
396static int set_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int value)
397{
398 return set_ctl_value(cval, SET_CUR, validx, value);
399}
400
401inline static int set_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int value)
402{
403 return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value);
404}
405
406
407/*
408 * parser routines begin here...
409 */
410
411static int parse_audio_unit(mixer_build_t *state, int unitid);
412
413
414/*
415 * check if the input/output channel routing is enabled on the given bitmap.
416 * used for mixer unit parser
417 */
418static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
419{
420 int idx = ich * num_outs + och;
421 return bmap[idx >> 3] & (0x80 >> (idx & 7));
422}
423
424
425/*
426 * add an alsa control element
427 * search and increment the index until an empty slot is found.
428 *
429 * if failed, give up and free the control instance.
430 */
431
84957a8a 432static int add_control_to_empty(mixer_build_t *state, snd_kcontrol_t *kctl)
1da177e4 433{
6639b6c2 434 usb_mixer_elem_info_t *cval = kctl->private_data;
1da177e4 435 int err;
84957a8a
CL		 436
437 while (snd_ctl_find_id(state->chip->card, &kctl->id))
1da177e4 438 kctl->id.index++;
84957a8a 439 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
1da177e4
LT		 440 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
441 snd_ctl_free_one(kctl);
6639b6c2 442 return err;
1da177e4 443 }
6639b6c2
CL		 444 cval->elem_id = &kctl->id;
445 cval->next_id_elem = state->mixer->id_elems[cval->id];
446 state->mixer->id_elems[cval->id] = cval;
447 return 0;
1da177e4
LT		 448}
449
450
451/*
452 * get a terminal name string
453 */
454
455static struct iterm_name_combo {
456 int type;
457 char *name;
458} iterm_names[] = {
459 { 0x0300, "Output" },
460 { 0x0301, "Speaker" },
461 { 0x0302, "Headphone" },
462 { 0x0303, "HMD Audio" },
463 { 0x0304, "Desktop Speaker" },
464 { 0x0305, "Room Speaker" },
465 { 0x0306, "Com Speaker" },
466 { 0x0307, "LFE" },
467 { 0x0600, "External In" },
468 { 0x0601, "Analog In" },
469 { 0x0602, "Digital In" },
470 { 0x0603, "Line" },
471 { 0x0604, "Legacy In" },
472 { 0x0605, "IEC958 In" },
473 { 0x0606, "1394 DA Stream" },
474 { 0x0607, "1394 DV Stream" },
475 { 0x0700, "Embedded" },
476 { 0x0701, "Noise Source" },
477 { 0x0702, "Equalization Noise" },
478 { 0x0703, "CD" },
479 { 0x0704, "DAT" },
480 { 0x0705, "DCC" },
481 { 0x0706, "MiniDisk" },
482 { 0x0707, "Analog Tape" },
483 { 0x0708, "Phonograph" },
484 { 0x0709, "VCR Audio" },
485 { 0x070a, "Video Disk Audio" },
486 { 0x070b, "DVD Audio" },
487 { 0x070c, "TV Tuner Audio" },
488 { 0x070d, "Satellite Rec Audio" },
489 { 0x070e, "Cable Tuner Audio" },
490 { 0x070f, "DSS Audio" },
491 { 0x0710, "Radio Receiver" },
492 { 0x0711, "Radio Transmitter" },
493 { 0x0712, "Multi-Track Recorder" },
494 { 0x0713, "Synthesizer" },
495 { 0 },
496};
497
498static int get_term_name(mixer_build_t *state, usb_audio_term_t *iterm,
499 unsigned char *name, int maxlen, int term_only)
500{
501 struct iterm_name_combo *names;
502
503 if (iterm->name)
504 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
505
506 /* virtual type - not a real terminal */
507 if (iterm->type >> 16) {
508 if (term_only)
509 return 0;
510 switch (iterm->type >> 16) {
511 case SELECTOR_UNIT:
512 strcpy(name, "Selector"); return 8;
513 case PROCESSING_UNIT:
514 strcpy(name, "Process Unit"); return 12;
515 case EXTENSION_UNIT:
516 strcpy(name, "Ext Unit"); return 8;
517 case MIXER_UNIT:
518 strcpy(name, "Mixer"); return 5;
519 default:
520 return sprintf(name, "Unit %d", iterm->id);
521 }
522 }
523
524 switch (iterm->type & 0xff00) {
525 case 0x0100:
526 strcpy(name, "PCM"); return 3;
527 case 0x0200:
528 strcpy(name, "Mic"); return 3;
529 case 0x0400:
530 strcpy(name, "Headset"); return 7;
531 case 0x0500:
532 strcpy(name, "Phone"); return 5;
533 }
534
535 for (names = iterm_names; names->type; names++)
536 if (names->type == iterm->type) {
537 strcpy(name, names->name);
538 return strlen(names->name);
539 }
540 return 0;
541}
542
543
544/*
545 * parse the source unit recursively until it reaches to a terminal
546 * or a branched unit.
547 */
548static int check_input_term(mixer_build_t *state, int id, usb_audio_term_t *term)
549{
550 unsigned char *p1;
551
552 memset(term, 0, sizeof(*term));
553 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
554 term->id = id;
555 switch (p1[2]) {
556 case INPUT_TERMINAL:
557 term->type = combine_word(p1 + 4);
558 term->channels = p1[7];
559 term->chconfig = combine_word(p1 + 8);
560 term->name = p1[11];
561 return 0;
562 case FEATURE_UNIT:
563 id = p1[4];
564 break; /* continue to parse */
565 case MIXER_UNIT:
566 term->type = p1[2] << 16; /* virtual type */
567 term->channels = p1[5 + p1[4]];
568 term->chconfig = combine_word(p1 + 6 + p1[4]);
569 term->name = p1[p1[0] - 1];
570 return 0;
571 case SELECTOR_UNIT:
572 /* call recursively to retrieve the channel info */
573 if (check_input_term(state, p1[5], term) < 0)
574 return -ENODEV;
575 term->type = p1[2] << 16; /* virtual type */
576 term->id = id;
577 term->name = p1[9 + p1[0] - 1];
578 return 0;
579 case PROCESSING_UNIT:
580 case EXTENSION_UNIT:
581 if (p1[6] == 1) {
582 id = p1[7];
583 break; /* continue to parse */
584 }
585 term->type = p1[2] << 16; /* virtual type */
586 term->channels = p1[7 + p1[6]];
587 term->chconfig = combine_word(p1 + 8 + p1[6]);
588 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
589 return 0;
590 default:
591 return -ENODEV;
592 }
593 }
594 return -ENODEV;
595}
596
597
598/*
599 * Feature Unit
600 */
601
602/* feature unit control information */
603struct usb_feature_control_info {
604 const char *name;
605 unsigned int type; /* control type (mute, volume, etc.) */
606};
607
608static struct usb_feature_control_info audio_feature_info[] = {
609 { "Mute", USB_MIXER_INV_BOOLEAN },
610 { "Volume", USB_MIXER_S16 },
611 { "Tone Control - Bass", USB_MIXER_S8 },
612 { "Tone Control - Mid", USB_MIXER_S8 },
613 { "Tone Control - Treble", USB_MIXER_S8 },
614 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
615 { "Auto Gain Control", USB_MIXER_BOOLEAN },
616 { "Delay Control", USB_MIXER_U16 },
617 { "Bass Boost", USB_MIXER_BOOLEAN },
618 { "Loudness", USB_MIXER_BOOLEAN },
619};
620
621
622/* private_free callback */
623static void usb_mixer_elem_free(snd_kcontrol_t *kctl)
624{
625 if (kctl->private_data) {
626 kfree(kctl->private_data);
627 kctl->private_data = NULL;
628 }
629}
630
631
632/*
633 * interface to ALSA control for feature/mixer units
634 */
635
636/*
637 * retrieve the minimum and maximum values for the specified control
638 */
639static int get_min_max(usb_mixer_elem_info_t *cval, int default_min)
640{
641 /* for failsafe */
642 cval->min = default_min;
643 cval->max = cval->min + 1;
644 cval->res = 1;
645
646 if (cval->val_type == USB_MIXER_BOOLEAN ||
647 cval->val_type == USB_MIXER_INV_BOOLEAN) {
648 cval->initialized = 1;
649 } else {
650 int minchn = 0;
651 if (cval->cmask) {
652 int i;
653 for (i = 0; i < MAX_CHANNELS; i++)
654 if (cval->cmask & (1 << i)) {
655 minchn = i + 1;
656 break;
657 }
658 }
659 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
660 get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
84957a8a
CL		 661 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
662 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
1da177e4
LT		 663 return -EINVAL;
664 }
665 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
666 cval->res = 1;
667 } else {
668 int last_valid_res = cval->res;
669
670 while (cval->res > 1) {
671 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
672 break;
673 cval->res /= 2;
674 }
675 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
676 cval->res = last_valid_res;
677 }
678 if (cval->res == 0)
679 cval->res = 1;
680 cval->initialized = 1;
681 }
682 return 0;
683}
684
685
686/* get a feature/mixer unit info */
687static int mixer_ctl_feature_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
688{
689 usb_mixer_elem_info_t *cval = kcontrol->private_data;
690
691 if (cval->val_type == USB_MIXER_BOOLEAN ||
692 cval->val_type == USB_MIXER_INV_BOOLEAN)
693 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
694 else
695 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
696 uinfo->count = cval->channels;
697 if (cval->val_type == USB_MIXER_BOOLEAN ||
698 cval->val_type == USB_MIXER_INV_BOOLEAN) {
699 uinfo->value.integer.min = 0;
700 uinfo->value.integer.max = 1;
701 } else {
702 if (! cval->initialized)
703 get_min_max(cval, 0);
704 uinfo->value.integer.min = 0;
705 uinfo->value.integer.max = (cval->max - cval->min) / cval->res;
706 }
707 return 0;
708}
709
710/* get the current value from feature/mixer unit */
711static int mixer_ctl_feature_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
712{
713 usb_mixer_elem_info_t *cval = kcontrol->private_data;
714 int c, cnt, val, err;
715
716 if (cval->cmask) {
717 cnt = 0;
718 for (c = 0; c < MAX_CHANNELS; c++) {
719 if (cval->cmask & (1 << c)) {
720 err = get_cur_mix_value(cval, c + 1, &val);
721 if (err < 0) {
84957a8a 722 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 723 ucontrol->value.integer.value[0] = cval->min;
724 return 0;
725 }
726 snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err);
727 return err;
728 }
729 val = get_relative_value(cval, val);
730 ucontrol->value.integer.value[cnt] = val;
731 cnt++;
732 }
733 }
734 } else {
735 /* master channel */
736 err = get_cur_mix_value(cval, 0, &val);
737 if (err < 0) {
84957a8a 738 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 739 ucontrol->value.integer.value[0] = cval->min;
740 return 0;
741 }
742 snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err);
743 return err;
744 }
745 val = get_relative_value(cval, val);
746 ucontrol->value.integer.value[0] = val;
747 }
748 return 0;
749}
750
751/* put the current value to feature/mixer unit */
752static int mixer_ctl_feature_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
753{
754 usb_mixer_elem_info_t *cval = kcontrol->private_data;
755 int c, cnt, val, oval, err;
756 int changed = 0;
757
758 if (cval->cmask) {
759 cnt = 0;
760 for (c = 0; c < MAX_CHANNELS; c++) {
761 if (cval->cmask & (1 << c)) {
762 err = get_cur_mix_value(cval, c + 1, &oval);
763 if (err < 0) {
84957a8a 764 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 765 return 0;
766 return err;
767 }
768 val = ucontrol->value.integer.value[cnt];
769 val = get_abs_value(cval, val);
770 if (oval != val) {
771 set_cur_mix_value(cval, c + 1, val);
772 changed = 1;
773 }
774 get_cur_mix_value(cval, c + 1, &val);
775 cnt++;
776 }
777 }
778 } else {
779 /* master channel */
780 err = get_cur_mix_value(cval, 0, &oval);
84957a8a 781 if (err < 0 && cval->mixer->ignore_ctl_error)
1da177e4
LT		 782 return 0;
783 if (err < 0)
784 return err;
785 val = ucontrol->value.integer.value[0];
786 val = get_abs_value(cval, val);
787 if (val != oval) {
788 set_cur_mix_value(cval, 0, val);
789 changed = 1;
790 }
791 }
792 return changed;
793}
794
795static snd_kcontrol_new_t usb_feature_unit_ctl = {
796 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
797 .name = "", /* will be filled later manually */
798 .info = mixer_ctl_feature_info,
799 .get = mixer_ctl_feature_get,
800 .put = mixer_ctl_feature_put,
801};
802
803
804/*
805 * build a feature control
806 */
807
808static void build_feature_ctl(mixer_build_t *state, unsigned char *desc,
809 unsigned int ctl_mask, int control,
810 usb_audio_term_t *iterm, int unitid)
811{
812 unsigned int len = 0;
813 int mapped_name = 0;
814 int nameid = desc[desc[0] - 1];
815 snd_kcontrol_t *kctl;
816 usb_mixer_elem_info_t *cval;
817
818 control++; /* change from zero-based to 1-based value */
819
820 if (control == USB_FEATURE_GEQ) {
821 /* FIXME: not supported yet */
822 return;
823 }
824
825 if (check_ignored_ctl(state, unitid, control))
826 return;
827
828 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
829 if (! cval) {
830 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
831 return;
832 }
84957a8a 833 cval->mixer = state->mixer;
1da177e4
LT		 834 cval->id = unitid;
835 cval->control = control;
836 cval->cmask = ctl_mask;
837 cval->val_type = audio_feature_info[control-1].type;
838 if (ctl_mask == 0)
839 cval->channels = 1; /* master channel */
840 else {
841 int i, c = 0;
842 for (i = 0; i < 16; i++)
843 if (ctl_mask & (1 << i))
844 c++;
845 cval->channels = c;
846 }
847
848 /* get min/max values */
849 get_min_max(cval, 0);
850
851 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
852 if (! kctl) {
853 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
854 kfree(cval);
855 return;
856 }
857 kctl->private_free = usb_mixer_elem_free;
858
859 len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
860 mapped_name = len != 0;
861 if (! len && nameid)
862 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
863
864 switch (control) {
865 case USB_FEATURE_MUTE:
866 case USB_FEATURE_VOLUME:
867 /* determine the control name. the rule is:
868 * - if a name id is given in descriptor, use it.
869 * - if the connected input can be determined, then use the name
870 * of terminal type.
871 * - if the connected output can be determined, use it.
872 * - otherwise, anonymous name.
873 */
874 if (! len) {
875 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
876 if (! len)
877 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
878 if (! len)
879 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
880 "Feature %d", unitid);
881 }
882 /* determine the stream direction:
883 * if the connected output is USB stream, then it's likely a
884 * capture stream. otherwise it should be playback (hopefully :)
885 */
886 if (! mapped_name && ! (state->oterm.type >> 16)) {
887 if ((state->oterm.type & 0xff00) == 0x0100) {
888 len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name));
889 } else {
890 len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name));
891 }
892 }
893 strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
894 sizeof(kctl->id.name));
895 break;
896
897 default:
898 if (! len)
899 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
900 sizeof(kctl->id.name));
901 break;
902 }
903
904 /* quirk for UDA1321/N101 */
905 /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
906 /* is not very clear from datasheets */
907 /* I hope that the min value is -15360 for newer firmware --jk */
27d10f56
CL		 908 switch (state->chip->usb_id) {
909 case USB_ID(0x0471, 0x0101):
910 case USB_ID(0x0471, 0x0104):
911 case USB_ID(0x0471, 0x0105):
912 case USB_ID(0x0672, 0x1041):
913 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
914 cval->min == -15616) {
915 snd_printk("using volume control quirk for the UDA1321/N101 chip\n");
916 cval->max = -256;
917 }
1da177e4
LT		 918 }
919
920 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
921 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
84957a8a 922 add_control_to_empty(state, kctl);
1da177e4
LT		 923}
924
925
926
927/*
928 * parse a feature unit
929 *
930 * most of controlls are defined here.
931 */
932static int parse_audio_feature_unit(mixer_build_t *state, int unitid, unsigned char *ftr)
933{
934 int channels, i, j;
935 usb_audio_term_t iterm;
936 unsigned int master_bits, first_ch_bits;
937 int err, csize;
938
939 if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
940 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
941 return -EINVAL;
942 }
943
944 /* parse the source unit */
945 if ((err = parse_audio_unit(state, ftr[4])) < 0)
946 return err;
947
948 /* determine the input source type and name */
949 if (check_input_term(state, ftr[4], &iterm) < 0)
950 return -EINVAL;
951
952 channels = (ftr[0] - 7) / csize - 1;
953
954 master_bits = snd_usb_combine_bytes(ftr + 6, csize);
955 if (channels > 0)
956 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
957 else
958 first_ch_bits = 0;
959 /* check all control types */
960 for (i = 0; i < 10; i++) {
961 unsigned int ch_bits = 0;
962 for (j = 0; j < channels; j++) {
963 unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize);
964 if (mask & (1 << i))
965 ch_bits |= (1 << j);
966 }
967 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
968 build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid);
969 if (master_bits & (1 << i))
970 build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
971 }
972
973 return 0;
974}
975
976
977/*
978 * Mixer Unit
979 */
980
981/*
982 * build a mixer unit control
983 *
984 * the callbacks are identical with feature unit.
985 * input channel number (zero based) is given in control field instead.
986 */
987
988static void build_mixer_unit_ctl(mixer_build_t *state, unsigned char *desc,
989 int in_pin, int in_ch, int unitid,
990 usb_audio_term_t *iterm)
991{
992 usb_mixer_elem_info_t *cval;
993 unsigned int input_pins = desc[4];
994 unsigned int num_outs = desc[5 + input_pins];
995 unsigned int i, len;
996 snd_kcontrol_t *kctl;
997
998 if (check_ignored_ctl(state, unitid, 0))
999 return;
1000
1001 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1002 if (! cval)
1003 return;
1004
84957a8a 1005 cval->mixer = state->mixer;
1da177e4
LT		 1006 cval->id = unitid;
1007 cval->control = in_ch + 1; /* based on 1 */
1008 cval->val_type = USB_MIXER_S16;
1009 for (i = 0; i < num_outs; i++) {
1010 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1011 cval->cmask |= (1 << i);
1012 cval->channels++;
1013 }
1014 }
1015
1016 /* get min/max values */
1017 get_min_max(cval, 0);
1018
1019 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1020 if (! kctl) {
1021 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1022 kfree(cval);
1023 return;
1024 }
1025 kctl->private_free = usb_mixer_elem_free;
1026
1027 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1028 if (! len)
1029 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1030 if (! len)
1031 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1032 strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name));
1033
1034 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1035 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1036 add_control_to_empty(state, kctl);
1da177e4
LT		 1037}
1038
1039
1040/*
1041 * parse a mixer unit
1042 */
1043static int parse_audio_mixer_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1044{
1045 usb_audio_term_t iterm;
1046 int input_pins, num_ins, num_outs;
1047 int pin, ich, err;
1048
1049 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1050 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1051 return -EINVAL;
1052 }
1053 /* no bmControls field (e.g. Maya44) -> ignore */
1054 if (desc[0] <= 10 + input_pins) {
1055 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1056 return 0;
1057 }
1058
1059 num_ins = 0;
1060 ich = 0;
1061 for (pin = 0; pin < input_pins; pin++) {
1062 err = parse_audio_unit(state, desc[5 + pin]);
1063 if (err < 0)
1064 return err;
1065 err = check_input_term(state, desc[5 + pin], &iterm);
1066 if (err < 0)
1067 return err;
1068 num_ins += iterm.channels;
1069 for (; ich < num_ins; ++ich) {
1070 int och, ich_has_controls = 0;
1071
1072 for (och = 0; och < num_outs; ++och) {
1073 if (check_matrix_bitmap(desc + 9 + input_pins,
1074 ich, och, num_outs)) {
1075 ich_has_controls = 1;
1076 break;
1077 }
1078 }
1079 if (ich_has_controls)
1080 build_mixer_unit_ctl(state, desc, pin, ich,
1081 unitid, &iterm);
1082 }
1083 }
1084 return 0;
1085}
1086
1087
1088/*
1089 * Processing Unit / Extension Unit
1090 */
1091
1092/* get callback for processing/extension unit */
1093static int mixer_ctl_procunit_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1094{
1095 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1096 int err, val;
1097
1098 err = get_cur_ctl_value(cval, cval->control << 8, &val);
84957a8a 1099 if (err < 0 && cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1100 ucontrol->value.integer.value[0] = cval->min;
1101 return 0;
1102 }
1103 if (err < 0)
1104 return err;
1105 val = get_relative_value(cval, val);
1106 ucontrol->value.integer.value[0] = val;
1107 return 0;
1108}
1109
1110/* put callback for processing/extension unit */
1111static int mixer_ctl_procunit_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1112{
1113 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1114 int val, oval, err;
1115
1116 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1117 if (err < 0) {
84957a8a 1118 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1119 return 0;
1120 return err;
1121 }
1122 val = ucontrol->value.integer.value[0];
1123 val = get_abs_value(cval, val);
1124 if (val != oval) {
1125 set_cur_ctl_value(cval, cval->control << 8, val);
1126 return 1;
1127 }
1128 return 0;
1129}
1130
1131/* alsa control interface for processing/extension unit */
1132static snd_kcontrol_new_t mixer_procunit_ctl = {
1133 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1134 .name = "", /* will be filled later */
1135 .info = mixer_ctl_feature_info,
1136 .get = mixer_ctl_procunit_get,
1137 .put = mixer_ctl_procunit_put,
1138};
1139
1140
1141/*
1142 * predefined data for processing units
1143 */
1144struct procunit_value_info {
1145 int control;
1146 char *suffix;
1147 int val_type;
1148 int min_value;
1149};
1150
1151struct procunit_info {
1152 int type;
1153 char *name;
1154 struct procunit_value_info *values;
1155};
1156
1157static struct procunit_value_info updown_proc_info[] = {
1158 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1159 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1160 { 0 }
1161};
1162static struct procunit_value_info prologic_proc_info[] = {
1163 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1164 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1165 { 0 }
1166};
1167static struct procunit_value_info threed_enh_proc_info[] = {
1168 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1169 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1170 { 0 }
1171};
1172static struct procunit_value_info reverb_proc_info[] = {
1173 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1174 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1175 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1176 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1177 { 0 }
1178};
1179static struct procunit_value_info chorus_proc_info[] = {
1180 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1181 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1182 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1183 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1184 { 0 }
1185};
1186static struct procunit_value_info dcr_proc_info[] = {
1187 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1188 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1189 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1190 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1191 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1192 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1193 { 0 }
1194};
1195
1196static struct procunit_info procunits[] = {
1197 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1198 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1199 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1200 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1201 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1202 { USB_PROC_DCR, "DCR", dcr_proc_info },
1203 { 0 },
1204};
1205
1206/*
1207 * build a processing/extension unit
1208 */
1209static int build_audio_procunit(mixer_build_t *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1210{
1211 int num_ins = dsc[6];
1212 usb_mixer_elem_info_t *cval;
1213 snd_kcontrol_t *kctl;
1214 int i, err, nameid, type, len;
1215 struct procunit_info *info;
1216 struct procunit_value_info *valinfo;
1217 static struct procunit_value_info default_value_info[] = {
1218 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1219 { 0 }
1220 };
1221 static struct procunit_info default_info = {
1222 0, NULL, default_value_info
1223 };
1224
1225 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1226 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1227 return -EINVAL;
1228 }
1229
1230 for (i = 0; i < num_ins; i++) {
1231 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1232 return err;
1233 }
1234
1235 type = combine_word(&dsc[4]);
1da177e4
LT		 1236 for (info = list; info && info->type; info++)
1237 if (info->type == type)
1238 break;
1239 if (! info || ! info->type)
1240 info = &default_info;
1241
1242 for (valinfo = info->values; valinfo->control; valinfo++) {
1243 /* FIXME: bitmap might be longer than 8bit */
1244 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1245 continue;
1246 if (check_ignored_ctl(state, unitid, valinfo->control))
1247 continue;
1248 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1249 if (! cval) {
1250 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1251 return -ENOMEM;
1252 }
84957a8a 1253 cval->mixer = state->mixer;
1da177e4
LT		 1254 cval->id = unitid;
1255 cval->control = valinfo->control;
1256 cval->val_type = valinfo->val_type;
1257 cval->channels = 1;
1258
1259 /* get min/max values */
1260 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1261 /* FIXME: hard-coded */
1262 cval->min = 1;
1263 cval->max = dsc[15];
1264 cval->res = 1;
1265 cval->initialized = 1;
1266 } else
1267 get_min_max(cval, valinfo->min_value);
1268
1269 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1270 if (! kctl) {
1271 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1272 kfree(cval);
1273 return -ENOMEM;
1274 }
1275 kctl->private_free = usb_mixer_elem_free;
1276
1277 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
1278 ;
1279 else if (info->name)
1280 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1281 else {
1282 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1283 len = 0;
1284 if (nameid)
1285 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1286 if (! len)
1287 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1288 }
1289 strlcat(kctl->id.name, " ", sizeof(kctl->id.name));
1290 strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name));
1291
1292 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1293 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1294 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1295 return err;
1296 }
1297 return 0;
1298}
1299
1300
1301static int parse_audio_processing_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1302{
1303 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1304}
1305
1306static int parse_audio_extension_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1307{
1308 return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
1309}
1310
1311
1312/*
1313 * Selector Unit
1314 */
1315
1316/* info callback for selector unit
1317 * use an enumerator type for routing
1318 */
1319static int mixer_ctl_selector_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1320{
1321 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1322 char **itemlist = (char **)kcontrol->private_value;
1323
1324 snd_assert(itemlist, return -EINVAL);
1325 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1326 uinfo->count = 1;
1327 uinfo->value.enumerated.items = cval->max;
1328 if ((int)uinfo->value.enumerated.item >= cval->max)
1329 uinfo->value.enumerated.item = cval->max - 1;
1330 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1331 return 0;
1332}
1333
1334/* get callback for selector unit */
1335static int mixer_ctl_selector_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1336{
1337 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1338 int val, err;
1339
1340 err = get_cur_ctl_value(cval, 0, &val);
1341 if (err < 0) {
84957a8a 1342 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1343 ucontrol->value.enumerated.item[0] = 0;
1344 return 0;
1345 }
1346 return err;
1347 }
1348 val = get_relative_value(cval, val);
1349 ucontrol->value.enumerated.item[0] = val;
1350 return 0;
1351}
1352
1353/* put callback for selector unit */
1354static int mixer_ctl_selector_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1355{
1356 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1357 int val, oval, err;
1358
1359 err = get_cur_ctl_value(cval, 0, &oval);
1360 if (err < 0) {
84957a8a 1361 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1362 return 0;
1363 return err;
1364 }
1365 val = ucontrol->value.enumerated.item[0];
1366 val = get_abs_value(cval, val);
1367 if (val != oval) {
1368 set_cur_ctl_value(cval, 0, val);
1369 return 1;
1370 }
1371 return 0;
1372}
1373
1374/* alsa control interface for selector unit */
1375static snd_kcontrol_new_t mixer_selectunit_ctl = {
1376 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1377 .name = "", /* will be filled later */
1378 .info = mixer_ctl_selector_info,
1379 .get = mixer_ctl_selector_get,
1380 .put = mixer_ctl_selector_put,
1381};
1382
1383
1384/* private free callback.
1385 * free both private_data and private_value
1386 */
1387static void usb_mixer_selector_elem_free(snd_kcontrol_t *kctl)
1388{
1389 int i, num_ins = 0;
1390
1391 if (kctl->private_data) {
1392 usb_mixer_elem_info_t *cval = kctl->private_data;
1393 num_ins = cval->max;
1394 kfree(cval);
1395 kctl->private_data = NULL;
1396 }
1397 if (kctl->private_value) {
1398 char **itemlist = (char **)kctl->private_value;
1399 for (i = 0; i < num_ins; i++)
1400 kfree(itemlist[i]);
1401 kfree(itemlist);
1402 kctl->private_value = 0;
1403 }
1404}
1405
1406/*
1407 * parse a selector unit
1408 */
1409static int parse_audio_selector_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1410{
1411 unsigned int num_ins = desc[4];
1412 unsigned int i, nameid, len;
1413 int err;
1414 usb_mixer_elem_info_t *cval;
1415 snd_kcontrol_t *kctl;
1416 char **namelist;
1417
1418 if (! num_ins || desc[0] < 6 + num_ins) {
1419 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1420 return -EINVAL;
1421 }
1422
1423 for (i = 0; i < num_ins; i++) {
1424 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1425 return err;
1426 }
1427
1428 if (num_ins == 1) /* only one ? nonsense! */
1429 return 0;
1430
1431 if (check_ignored_ctl(state, unitid, 0))
1432 return 0;
1433
1434 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1435 if (! cval) {
1436 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1437 return -ENOMEM;
1438 }
84957a8a 1439 cval->mixer = state->mixer;
1da177e4
LT		 1440 cval->id = unitid;
1441 cval->val_type = USB_MIXER_U8;
1442 cval->channels = 1;
1443 cval->min = 1;
1444 cval->max = num_ins;
1445 cval->res = 1;
1446 cval->initialized = 1;
1447
1448 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1449 if (! namelist) {
1450 snd_printk(KERN_ERR "cannot malloc\n");
1451 kfree(cval);
1452 return -ENOMEM;
1453 }
1454#define MAX_ITEM_NAME_LEN 64
1455 for (i = 0; i < num_ins; i++) {
1456 usb_audio_term_t iterm;
1457 len = 0;
1458 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1459 if (! namelist[i]) {
1460 snd_printk(KERN_ERR "cannot malloc\n");
1461 while (--i > 0)
1462 kfree(namelist[i]);
1463 kfree(namelist);
1464 kfree(cval);
1465 return -ENOMEM;
1466 }
8e062ec7
CL		 1467 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1468 MAX_ITEM_NAME_LEN);
1469 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1da177e4
LT		 1470 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1471 if (! len)
1472 sprintf(namelist[i], "Input %d", i);
1473 }
1474
1475 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1476 if (! kctl) {
1477 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1478 kfree(cval);
1479 return -ENOMEM;
1480 }
1481 kctl->private_value = (unsigned long)namelist;
1482 kctl->private_free = usb_mixer_selector_elem_free;
1483
1484 nameid = desc[desc[0] - 1];
1485 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1486 if (len)
1487 ;
1488 else if (nameid)
1489 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1490 else {
1491 len = get_term_name(state, &state->oterm,
1492 kctl->id.name, sizeof(kctl->id.name), 0);
1493 if (! len)
1494 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1495
1496 if ((state->oterm.type & 0xff00) == 0x0100)
1497 strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name));
1498 else
1499 strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name));
1500 }
1501
1502 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1503 cval->id, kctl->id.name, num_ins);
84957a8a 1504 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1505 return err;
1506
1507 return 0;
1508}
1509
1510
1511/*
1512 * parse an audio unit recursively
1513 */
1514
1515static int parse_audio_unit(mixer_build_t *state, int unitid)
1516{
1517 unsigned char *p1;
1518
1519 if (test_and_set_bit(unitid, state->unitbitmap))
1520 return 0; /* the unit already visited */
1521
1522 p1 = find_audio_control_unit(state, unitid);
1523 if (!p1) {
1524 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1525 return -EINVAL;
1526 }
1527
1528 switch (p1[2]) {
1529 case INPUT_TERMINAL:
1530 return 0; /* NOP */
1531 case MIXER_UNIT:
1532 return parse_audio_mixer_unit(state, unitid, p1);
1533 case SELECTOR_UNIT:
1534 return parse_audio_selector_unit(state, unitid, p1);
1535 case FEATURE_UNIT:
1536 return parse_audio_feature_unit(state, unitid, p1);
1537 case PROCESSING_UNIT:
1538 return parse_audio_processing_unit(state, unitid, p1);
1539 case EXTENSION_UNIT:
1540 return parse_audio_extension_unit(state, unitid, p1);
1541 default:
1542 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1543 return -EINVAL;
1544 }
1545}
1546
84957a8a
CL		 1547static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1548{
6639b6c2
CL		 1549 kfree(mixer->id_elems);
1550 if (mixer->urb) {
1551 kfree(mixer->urb->transfer_buffer);
1552 usb_free_urb(mixer->urb);
1553 }
b259b10c
CL		 1554 if (mixer->rc_urb)
1555 usb_free_urb(mixer->rc_urb);
1556 kfree(mixer->rc_setup_packet);
84957a8a
CL		 1557 kfree(mixer);
1558}
1559
1560static int snd_usb_mixer_dev_free(snd_device_t *device)
1561{
1562 struct usb_mixer_interface *mixer = device->device_data;
1563 snd_usb_mixer_free(mixer);
1564 return 0;
1565}
1566
1da177e4
LT		 1567/*
1568 * create mixer controls
1569 *
1570 * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1571 */
84957a8a 1572static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1da177e4
LT		 1573{
1574 unsigned char *desc;
1575 mixer_build_t state;
1576 int err;
1577 const struct usbmix_ctl_map *map;
84957a8a 1578 struct usb_host_interface *hostif;
1da177e4 1579
84957a8a 1580 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1da177e4 1581 memset(&state, 0, sizeof(state));
84957a8a
CL		 1582 state.chip = mixer->chip;
1583 state.mixer = mixer;
1da177e4
LT		 1584 state.buffer = hostif->extra;
1585 state.buflen = hostif->extralen;
1da177e4
LT		 1586
1587 /* check the mapping table */
27d10f56
CL		 1588 for (map = usbmix_ctl_maps; map->id; map++) {
1589 if (map->id == state.chip->usb_id) {
1da177e4 1590 state.map = map->map;
8e062ec7 1591 state.selector_map = map->selector_map;
84957a8a 1592 mixer->ignore_ctl_error = map->ignore_ctl_error;
1da177e4
LT		 1593 break;
1594 }
1595 }
1da177e4
LT		 1596
1597 desc = NULL;
1598 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
1599 if (desc[0] < 9)
1600 continue; /* invalid descriptor? */
1601 set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */
1602 state.oterm.id = desc[3];
1603 state.oterm.type = combine_word(&desc[4]);
1604 state.oterm.name = desc[8];
1605 err = parse_audio_unit(&state, desc[7]);
1606 if (err < 0)
1607 return err;
1608 }
1609 return 0;
1610}
84957a8a 1611
6639b6c2
CL		 1612static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1613 int unitid)
1614{
1615 usb_mixer_elem_info_t *info;
1616
1617 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1618 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1619 info->elem_id);
1620}
1621
b259b10c
CL		 1622static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1623 int unitid)
1624{
1625 /* SB remote control */
1626 if (mixer->rc_type != RC_NONE && unitid == 0) {
1627 /* read control code from device memory */
1628 mixer->rc_urb->dev = mixer->chip->dev;
1629 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1630 }
1631}
1632
6639b6c2
CL		 1633static void snd_usb_mixer_status_complete(struct urb *urb, struct pt_regs *regs)
1634{
1635 struct usb_mixer_interface *mixer = urb->context;
1636
1637 if (urb->status == 0) {
1638 u8 *buf = urb->transfer_buffer;
1639 int i;
1640
1641 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1642 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1643 buf[0], buf[1]);
1644 /* ignore any notifications not from the control interface */
1645 if ((buf[0] & 0x0f) != 0)
1646 continue;
1647 if (!(buf[0] & 0x40))
1648 snd_usb_mixer_notify_id(mixer, buf[1]);
b259b10c
CL		 1649 else
1650 snd_usb_mixer_memory_change(mixer, buf[1]);
6639b6c2
CL		 1651 }
1652 }
1653 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1654 urb->dev = mixer->chip->dev;
1655 usb_submit_urb(urb, GFP_ATOMIC);
1656 }
1657}
1658
1659/* create the handler for the optional status interrupt endpoint */
1660static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1661{
1662 struct usb_host_interface *hostif;
1663 struct usb_endpoint_descriptor *ep;
1664 void *transfer_buffer;
1665 int buffer_length;
1666 unsigned int epnum;
1667
1668 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1669 /* we need one interrupt input endpoint */
1670 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1671 return 0;
1672 ep = get_endpoint(hostif, 0);
1673 if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
1674 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1675 return 0;
1676
1677 epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1678 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1679 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1680 if (!transfer_buffer)
1681 return -ENOMEM;
1682 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1683 if (!mixer->urb) {
1684 kfree(transfer_buffer);
1685 return -ENOMEM;
1686 }
1687 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1688 usb_rcvintpipe(mixer->chip->dev, epnum),
1689 transfer_buffer, buffer_length,
1690 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1691 usb_submit_urb(mixer->urb, GFP_KERNEL);
1692 return 0;
1693}
1694
b259b10c
CL		 1695static void snd_usb_soundblaster_remote_complete(struct urb *urb,
1696 struct pt_regs *regs)
1697{
1698 struct usb_mixer_interface *mixer = urb->context;
1699 /*
1700 * format of remote control data:
1701 * Extigy: xx 00
1702 * Audigy 2 NX: 06 80 xx 00 00 00
1703 */
1704 int offset = mixer->rc_type == RC_EXTIGY ? 0 : 2;
1705 u32 code;
1706
1707 if (urb->status < 0 || urb->actual_length <= offset)
1708 return;
1709 code = mixer->rc_buffer[offset];
1710 /* the Mute button actually changes the mixer control */
1711 if (code == 13)
1712 snd_usb_mixer_notify_id(mixer, 18);
1713 mixer->rc_code = code;
1714 wmb();
1715 wake_up(&mixer->rc_waitq);
1716}
1717
1718static int snd_usb_sbrc_hwdep_open(snd_hwdep_t *hw, struct file *file)
1719{
1720 struct usb_mixer_interface *mixer = hw->private_data;
1721
1722 if (test_and_set_bit(0, &mixer->rc_hwdep_open))
1723 return -EBUSY;
1724 return 0;
1725}
1726
1727static int snd_usb_sbrc_hwdep_release(snd_hwdep_t *hw, struct file *file)
1728{
1729 struct usb_mixer_interface *mixer = hw->private_data;
1730
1731 clear_bit(0, &mixer->rc_hwdep_open);
1732 smp_mb__after_clear_bit();
1733 return 0;
1734}
1735
1736static long snd_usb_sbrc_hwdep_read(snd_hwdep_t *hw, char __user *buf,
1737 long count, loff_t *offset)
1738{
1739 struct usb_mixer_interface *mixer = hw->private_data;
1740 int err;
1741 u32 rc_code;
1742
434b7f56 1743 if (count != 1 && count != 4)
b259b10c
CL		 1744 return -EINVAL;
1745 err = wait_event_interruptible(mixer->rc_waitq,
1746 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1747 if (err == 0) {
434b7f56
CL		 1748 if (count == 1)
1749 err = put_user(rc_code, buf);
1750 else
1751 err = put_user(rc_code, (u32 __user *)buf);
b259b10c
CL		 1752 }
1753 return err < 0 ? err : count;
1754}
1755
1756static unsigned int snd_usb_sbrc_hwdep_poll(snd_hwdep_t *hw, struct file *file,
1757 poll_table *wait)
1758{
1759 struct usb_mixer_interface *mixer = hw->private_data;
1760
1761 poll_wait(file, &mixer->rc_waitq, wait);
1762 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
1763}
1764
1765static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
1766{
1767 snd_hwdep_t *hwdep;
1768 int err, len;
1769
27d10f56
CL		 1770 switch (mixer->chip->usb_id) {
1771 case USB_ID(0x041e, 0x3000):
b259b10c
CL		 1772 mixer->rc_type = RC_EXTIGY;
1773 len = 2;
1774 break;
27d10f56 1775 case USB_ID(0x041e, 0x3020):
b259b10c
CL		 1776 mixer->rc_type = RC_AUDIGY2NX;
1777 len = 6;
1778 break;
1779 default:
1780 return 0;
1781 }
1782
1783 init_waitqueue_head(&mixer->rc_waitq);
1784 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
1785 if (err < 0)
1786 return err;
1787 snprintf(hwdep->name, sizeof(hwdep->name),
1788 "%s remote control", mixer->chip->card->shortname);
1789 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
1790 hwdep->private_data = mixer;
1791 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
1792 hwdep->ops.open = snd_usb_sbrc_hwdep_open;
1793 hwdep->ops.release = snd_usb_sbrc_hwdep_release;
1794 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
1795
1796 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
1797 if (!mixer->rc_urb)
1798 return -ENOMEM;
1799 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
1800 if (!mixer->rc_setup_packet) {
1801 usb_free_urb(mixer->rc_urb);
1802 mixer->rc_urb = NULL;
1803 return -ENOMEM;
1804 }
1805 mixer->rc_setup_packet->bRequestType =
1806 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
1807 mixer->rc_setup_packet->bRequest = GET_MEM;
1808 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
1809 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
1810 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
1811 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
1812 usb_rcvctrlpipe(mixer->chip->dev, 0),
1813 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
1814 snd_usb_soundblaster_remote_complete, mixer);
1815 return 0;
1816}
1817
93446edc
CL		 1818static int snd_audigy2nx_led_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1819{
1820 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1821 uinfo->count = 1;
1822 uinfo->value.integer.min = 0;
1823 uinfo->value.integer.max = 1;
1824 return 0;
1825}
1826
1827static int snd_audigy2nx_led_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1828{
1829 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1830 int index = kcontrol->private_value;
1831
1832 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
1833 return 0;
1834}
1835
1836static int snd_audigy2nx_led_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1837{
1838 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1839 int index = kcontrol->private_value;
1840 int value = ucontrol->value.integer.value[0];
1841 int err, changed;
1842
1843 if (value > 1)
1844 return -EINVAL;
1845 changed = value != mixer->audigy2nx_leds[index];
1846 err = snd_usb_ctl_msg(mixer->chip->dev,
1847 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
1848 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1849 value, index + 2, NULL, 0, 100);
1850 if (err < 0)
1851 return err;
1852 mixer->audigy2nx_leds[index] = value;
1853 return changed;
1854}
1855
1856static snd_kcontrol_new_t snd_audigy2nx_controls[] = {
1857 {
1858 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1859 .name = "CMSS LED Switch",
1860 .info = snd_audigy2nx_led_info,
1861 .get = snd_audigy2nx_led_get,
1862 .put = snd_audigy2nx_led_put,
1863 .private_value = 0,
1864 },
1865 {
1866 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1867 .name = "Power LED Switch",
1868 .info = snd_audigy2nx_led_info,
1869 .get = snd_audigy2nx_led_get,
1870 .put = snd_audigy2nx_led_put,
1871 .private_value = 1,
1872 },
1873 {
1874 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1875 .name = "Dolby Digital LED Switch",
1876 .info = snd_audigy2nx_led_info,
1877 .get = snd_audigy2nx_led_get,
1878 .put = snd_audigy2nx_led_put,
1879 .private_value = 2,
1880 },
1881};
1882
1883static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
1884{
1885 int i, err;
1886
1887 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
1888 err = snd_ctl_add(mixer->chip->card,
1889 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
1890 if (err < 0)
1891 return err;
1892 }
1893 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
1894 return 0;
1895}
1896
84957a8a
CL		 1897int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
1898{
1899 static snd_device_ops_t dev_ops = {
1900 .dev_free = snd_usb_mixer_dev_free
1901 };
1902 struct usb_mixer_interface *mixer;
1903 int err;
1904
1905 strcpy(chip->card->mixername, "USB Mixer");
1906
1907 mixer = kcalloc(1, sizeof(*mixer), GFP_KERNEL);
1908 if (!mixer)
1909 return -ENOMEM;
1910 mixer->chip = chip;
1911 mixer->ctrlif = ctrlif;
1912#ifdef IGNORE_CTL_ERROR
1913 mixer->ignore_ctl_error = 1;
1914#endif
6639b6c2
CL		 1915 mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
1916 if (!mixer->id_elems) {
1917 kfree(mixer);
1918 return -ENOMEM;
1919 }
84957a8a 1920
6639b6c2 1921 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
93446edc
CL		 1922 (err = snd_usb_mixer_status_create(mixer)) < 0)
1923 goto _error;
84957a8a 1924
93446edc
CL		 1925 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
1926 goto _error;
1927
1928 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) {
1929 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
1930 goto _error;
b259b10c
CL		 1931 }
1932
84957a8a 1933 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
93446edc
CL		 1934 if (err < 0)
1935 goto _error;
84957a8a
CL		 1936 list_add(&mixer->list, &chip->mixer_list);
1937 return 0;
93446edc
CL		 1938
1939_error:
1940 snd_usb_mixer_free(mixer);
1941 return err;
84957a8a
CL		 1942}
1943
1944void snd_usb_mixer_disconnect(struct list_head *p)
1945{
6639b6c2
CL		 1946 struct usb_mixer_interface *mixer;
1947
1948 mixer = list_entry(p, struct usb_mixer_interface, list);
1949 if (mixer->urb)
1950 usb_kill_urb(mixer->urb);
b259b10c
CL		 1951 if (mixer->rc_urb)
1952 usb_kill_urb(mixer->rc_urb);
84957a8a 1953}
kernel source for telekom puls (alcatel/mediatek)