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[ALSA] usb-audio - Audigy 2 NX blinkenlights
[deliverable/linux.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
434b7f56
CL		 42#if 0
43#include <linux/lirc.h>
44#else
45/* only those symbols from lirc.h we actually need: */
46#include <linux/ioctl.h>
47#define LIRC_MODE2REC(x) ((x) << 16)
48#define LIRC_MODE_CODE 0x00000008
49#define LIRC_CAN_REC_CODE LIRC_MODE2REC(LIRC_MODE_CODE)
50#define LIRC_GET_FEATURES _IOR('i', 0x00000000, __u32)
51#define LIRC_GET_REC_MODE _IOR('i', 0x00000002, __u32)
52#define LIRC_SET_REC_MODE _IOW('i', 0x00000012, __u32)
53#endif
1da177e4
LT		 54
55/*
56 */
57
58/* ignore error from controls - for debugging */
59/* #define IGNORE_CTL_ERROR */
60
61typedef struct usb_mixer_build mixer_build_t;
62typedef struct usb_audio_term usb_audio_term_t;
63typedef struct usb_mixer_elem_info usb_mixer_elem_info_t;
64
65
84957a8a
CL		 66struct usb_mixer_interface {
67 snd_usb_audio_t *chip;
68 unsigned int ctrlif;
69 struct list_head list;
70 unsigned int ignore_ctl_error;
6639b6c2
CL		 71 struct urb *urb;
72 usb_mixer_elem_info_t **id_elems; /* array[256], indexed by unit id */
b259b10c
CL		 73
74 /* Sound Blaster remote control stuff */
75 enum {
76 RC_NONE,
77 RC_EXTIGY,
78 RC_AUDIGY2NX,
79 } rc_type;
80 unsigned long rc_hwdep_open;
81 u32 rc_code;
82 wait_queue_head_t rc_waitq;
83 struct urb *rc_urb;
84 struct usb_ctrlrequest *rc_setup_packet;
85 u8 rc_buffer[6];
93446edc
CL		 86
87 u8 audigy2nx_leds[3];
84957a8a
CL		 88};
89
90
1da177e4
LT		 91struct usb_audio_term {
92 int id;
93 int type;
94 int channels;
95 unsigned int chconfig;
96 int name;
97};
98
99struct usbmix_name_map;
100
101struct usb_mixer_build {
102 snd_usb_audio_t *chip;
84957a8a 103 struct usb_mixer_interface *mixer;
1da177e4
LT		 104 unsigned char *buffer;
105 unsigned int buflen;
707e6073 106 DECLARE_BITMAP(unitbitmap, 256);
1da177e4
LT		 107 usb_audio_term_t oterm;
108 const struct usbmix_name_map *map;
8e062ec7 109 const struct usbmix_selector_map *selector_map;
1da177e4
LT		 110};
111
112struct usb_mixer_elem_info {
84957a8a 113 struct usb_mixer_interface *mixer;
6639b6c2
CL		 114 usb_mixer_elem_info_t *next_id_elem; /* list of controls with same id */
115 snd_ctl_elem_id_t *elem_id;
1da177e4
LT		 116 unsigned int id;
117 unsigned int control; /* CS or ICN (high byte) */
118 unsigned int cmask; /* channel mask bitmap: 0 = master */
119 int channels;
120 int val_type;
121 int min, max, res;
6639b6c2 122 u8 initialized;
1da177e4
LT		 123};
124
125
126enum {
127 USB_FEATURE_NONE = 0,
128 USB_FEATURE_MUTE = 1,
129 USB_FEATURE_VOLUME,
130 USB_FEATURE_BASS,
131 USB_FEATURE_MID,
132 USB_FEATURE_TREBLE,
133 USB_FEATURE_GEQ,
134 USB_FEATURE_AGC,
135 USB_FEATURE_DELAY,
136 USB_FEATURE_BASSBOOST,
137 USB_FEATURE_LOUDNESS
138};
139
140enum {
141 USB_MIXER_BOOLEAN,
142 USB_MIXER_INV_BOOLEAN,
143 USB_MIXER_S8,
144 USB_MIXER_U8,
145 USB_MIXER_S16,
146 USB_MIXER_U16,
147};
148
149enum {
150 USB_PROC_UPDOWN = 1,
151 USB_PROC_UPDOWN_SWITCH = 1,
152 USB_PROC_UPDOWN_MODE_SEL = 2,
153
154 USB_PROC_PROLOGIC = 2,
155 USB_PROC_PROLOGIC_SWITCH = 1,
156 USB_PROC_PROLOGIC_MODE_SEL = 2,
157
158 USB_PROC_3DENH = 3,
159 USB_PROC_3DENH_SWITCH = 1,
160 USB_PROC_3DENH_SPACE = 2,
161
162 USB_PROC_REVERB = 4,
163 USB_PROC_REVERB_SWITCH = 1,
164 USB_PROC_REVERB_LEVEL = 2,
165 USB_PROC_REVERB_TIME = 3,
166 USB_PROC_REVERB_DELAY = 4,
167
168 USB_PROC_CHORUS = 5,
169 USB_PROC_CHORUS_SWITCH = 1,
170 USB_PROC_CHORUS_LEVEL = 2,
171 USB_PROC_CHORUS_RATE = 3,
172 USB_PROC_CHORUS_DEPTH = 4,
173
174 USB_PROC_DCR = 6,
175 USB_PROC_DCR_SWITCH = 1,
176 USB_PROC_DCR_RATIO = 2,
177 USB_PROC_DCR_MAX_AMP = 3,
178 USB_PROC_DCR_THRESHOLD = 4,
179 USB_PROC_DCR_ATTACK = 5,
180 USB_PROC_DCR_RELEASE = 6,
181};
182
183#define MAX_CHANNELS 10 /* max logical channels */
184
185
186/*
187 * manual mapping of mixer names
188 * if the mixer topology is too complicated and the parsed names are
189 * ambiguous, add the entries in usbmixer_maps.c.
190 */
191#include "usbmixer_maps.c"
192
193/* get the mapped name if the unit matches */
194static int check_mapped_name(mixer_build_t *state, int unitid, int control, char *buf, int buflen)
195{
196 const struct usbmix_name_map *p;
197
198 if (! state->map)
199 return 0;
200
201 for (p = state->map; p->id; p++) {
202 if (p->id == unitid && p->name &&
203 (! control || ! p->control || control == p->control)) {
204 buflen--;
205 return strlcpy(buf, p->name, buflen);
206 }
207 }
208 return 0;
209}
210
211/* check whether the control should be ignored */
212static int check_ignored_ctl(mixer_build_t *state, int unitid, int control)
213{
214 const struct usbmix_name_map *p;
215
216 if (! state->map)
217 return 0;
218 for (p = state->map; p->id; p++) {
219 if (p->id == unitid && ! p->name &&
220 (! control || ! p->control || control == p->control)) {
221 // printk("ignored control %d:%d\n", unitid, control);
222 return 1;
223 }
224 }
225 return 0;
226}
227
8e062ec7
CL		 228/* get the mapped selector source name */
229static int check_mapped_selector_name(mixer_build_t *state, int unitid,
230 int index, char *buf, int buflen)
231{
232 const struct usbmix_selector_map *p;
233
234 if (! state->selector_map)
235 return 0;
236 for (p = state->selector_map; p->id; p++) {
237 if (p->id == unitid && index < p->count)
238 return strlcpy(buf, p->names[index], buflen);
239 }
240 return 0;
241}
242
1da177e4
LT		 243/*
244 * find an audio control unit with the given unit id
245 */
246static void *find_audio_control_unit(mixer_build_t *state, unsigned char unit)
247{
248 unsigned char *p;
249
250 p = NULL;
251 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
252 USB_DT_CS_INTERFACE)) != NULL) {
253 if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
254 return p;
255 }
256 return NULL;
257}
258
259
260/*
261 * copy a string with the given id
262 */
263static int snd_usb_copy_string_desc(mixer_build_t *state, int index, char *buf, int maxlen)
264{
265 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
266 buf[len] = 0;
267 return len;
268}
269
270/*
271 * convert from the byte/word on usb descriptor to the zero-based integer
272 */
273static int convert_signed_value(usb_mixer_elem_info_t *cval, int val)
274{
275 switch (cval->val_type) {
276 case USB_MIXER_BOOLEAN:
277 return !!val;
278 case USB_MIXER_INV_BOOLEAN:
279 return !val;
280 case USB_MIXER_U8:
281 val &= 0xff;
282 break;
283 case USB_MIXER_S8:
284 val &= 0xff;
285 if (val >= 0x80)
286 val -= 0x100;
287 break;
288 case USB_MIXER_U16:
289 val &= 0xffff;
290 break;
291 case USB_MIXER_S16:
292 val &= 0xffff;
293 if (val >= 0x8000)
294 val -= 0x10000;
295 break;
296 }
297 return val;
298}
299
300/*
301 * convert from the zero-based int to the byte/word for usb descriptor
302 */
303static int convert_bytes_value(usb_mixer_elem_info_t *cval, int val)
304{
305 switch (cval->val_type) {
306 case USB_MIXER_BOOLEAN:
307 return !!val;
308 case USB_MIXER_INV_BOOLEAN:
309 return !val;
310 case USB_MIXER_S8:
311 case USB_MIXER_U8:
312 return val & 0xff;
313 case USB_MIXER_S16:
314 case USB_MIXER_U16:
315 return val & 0xffff;
316 }
317 return 0; /* not reached */
318}
319
320static int get_relative_value(usb_mixer_elem_info_t *cval, int val)
321{
322 if (! cval->res)
323 cval->res = 1;
324 if (val < cval->min)
325 return 0;
326 else if (val > cval->max)
327 return (cval->max - cval->min) / cval->res;
328 else
329 return (val - cval->min) / cval->res;
330}
331
332static int get_abs_value(usb_mixer_elem_info_t *cval, int val)
333{
334 if (val < 0)
335 return cval->min;
336 if (! cval->res)
337 cval->res = 1;
338 val *= cval->res;
339 val += cval->min;
340 if (val > cval->max)
341 return cval->max;
342 return val;
343}
344
345
346/*
347 * retrieve a mixer value
348 */
349
350static int get_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int *value_ret)
351{
352 unsigned char buf[2];
353 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
354 int timeout = 10;
355
356 while (timeout-- > 0) {
84957a8a
CL		 357 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
358 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 359 request,
360 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
84957a8a 361 validx, cval->mixer->ctrlif | (cval->id << 8),
1da177e4
LT		 362 buf, val_len, 100) >= 0) {
363 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
364 return 0;
365 }
366 }
84957a8a
CL		 367 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
368 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
1da177e4
LT		 369 return -EINVAL;
370}
371
372static int get_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int *value)
373{
374 return get_ctl_value(cval, GET_CUR, validx, value);
375}
376
377/* channel = 0: master, 1 = first channel */
378inline static int get_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int *value)
379{
380 return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value);
381}
382
383/*
384 * set a mixer value
385 */
386
387static int set_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int value_set)
388{
389 unsigned char buf[2];
390 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
391 int timeout = 10;
392
393 value_set = convert_bytes_value(cval, value_set);
394 buf[0] = value_set & 0xff;
395 buf[1] = (value_set >> 8) & 0xff;
396 while (timeout -- > 0)
84957a8a
CL		 397 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
398 usb_sndctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 399 request,
400 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
84957a8a 401 validx, cval->mixer->ctrlif | (cval->id << 8),
1da177e4
LT		 402 buf, val_len, 100) >= 0)
403 return 0;
84957a8a
CL		 404 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
405 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
1da177e4
LT		 406 return -EINVAL;
407}
408
409static int set_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int value)
410{
411 return set_ctl_value(cval, SET_CUR, validx, value);
412}
413
414inline static int set_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int value)
415{
416 return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value);
417}
418
419
420/*
421 * parser routines begin here...
422 */
423
424static int parse_audio_unit(mixer_build_t *state, int unitid);
425
426
427/*
428 * check if the input/output channel routing is enabled on the given bitmap.
429 * used for mixer unit parser
430 */
431static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
432{
433 int idx = ich * num_outs + och;
434 return bmap[idx >> 3] & (0x80 >> (idx & 7));
435}
436
437
438/*
439 * add an alsa control element
440 * search and increment the index until an empty slot is found.
441 *
442 * if failed, give up and free the control instance.
443 */
444
84957a8a 445static int add_control_to_empty(mixer_build_t *state, snd_kcontrol_t *kctl)
1da177e4 446{
6639b6c2 447 usb_mixer_elem_info_t *cval = kctl->private_data;
1da177e4 448 int err;
84957a8a
CL		 449
450 while (snd_ctl_find_id(state->chip->card, &kctl->id))
1da177e4 451 kctl->id.index++;
84957a8a 452 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
1da177e4
LT		 453 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
454 snd_ctl_free_one(kctl);
6639b6c2 455 return err;
1da177e4 456 }
6639b6c2
CL		 457 cval->elem_id = &kctl->id;
458 cval->next_id_elem = state->mixer->id_elems[cval->id];
459 state->mixer->id_elems[cval->id] = cval;
460 return 0;
1da177e4
LT		 461}
462
463
464/*
465 * get a terminal name string
466 */
467
468static struct iterm_name_combo {
469 int type;
470 char *name;
471} iterm_names[] = {
472 { 0x0300, "Output" },
473 { 0x0301, "Speaker" },
474 { 0x0302, "Headphone" },
475 { 0x0303, "HMD Audio" },
476 { 0x0304, "Desktop Speaker" },
477 { 0x0305, "Room Speaker" },
478 { 0x0306, "Com Speaker" },
479 { 0x0307, "LFE" },
480 { 0x0600, "External In" },
481 { 0x0601, "Analog In" },
482 { 0x0602, "Digital In" },
483 { 0x0603, "Line" },
484 { 0x0604, "Legacy In" },
485 { 0x0605, "IEC958 In" },
486 { 0x0606, "1394 DA Stream" },
487 { 0x0607, "1394 DV Stream" },
488 { 0x0700, "Embedded" },
489 { 0x0701, "Noise Source" },
490 { 0x0702, "Equalization Noise" },
491 { 0x0703, "CD" },
492 { 0x0704, "DAT" },
493 { 0x0705, "DCC" },
494 { 0x0706, "MiniDisk" },
495 { 0x0707, "Analog Tape" },
496 { 0x0708, "Phonograph" },
497 { 0x0709, "VCR Audio" },
498 { 0x070a, "Video Disk Audio" },
499 { 0x070b, "DVD Audio" },
500 { 0x070c, "TV Tuner Audio" },
501 { 0x070d, "Satellite Rec Audio" },
502 { 0x070e, "Cable Tuner Audio" },
503 { 0x070f, "DSS Audio" },
504 { 0x0710, "Radio Receiver" },
505 { 0x0711, "Radio Transmitter" },
506 { 0x0712, "Multi-Track Recorder" },
507 { 0x0713, "Synthesizer" },
508 { 0 },
509};
510
511static int get_term_name(mixer_build_t *state, usb_audio_term_t *iterm,
512 unsigned char *name, int maxlen, int term_only)
513{
514 struct iterm_name_combo *names;
515
516 if (iterm->name)
517 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
518
519 /* virtual type - not a real terminal */
520 if (iterm->type >> 16) {
521 if (term_only)
522 return 0;
523 switch (iterm->type >> 16) {
524 case SELECTOR_UNIT:
525 strcpy(name, "Selector"); return 8;
526 case PROCESSING_UNIT:
527 strcpy(name, "Process Unit"); return 12;
528 case EXTENSION_UNIT:
529 strcpy(name, "Ext Unit"); return 8;
530 case MIXER_UNIT:
531 strcpy(name, "Mixer"); return 5;
532 default:
533 return sprintf(name, "Unit %d", iterm->id);
534 }
535 }
536
537 switch (iterm->type & 0xff00) {
538 case 0x0100:
539 strcpy(name, "PCM"); return 3;
540 case 0x0200:
541 strcpy(name, "Mic"); return 3;
542 case 0x0400:
543 strcpy(name, "Headset"); return 7;
544 case 0x0500:
545 strcpy(name, "Phone"); return 5;
546 }
547
548 for (names = iterm_names; names->type; names++)
549 if (names->type == iterm->type) {
550 strcpy(name, names->name);
551 return strlen(names->name);
552 }
553 return 0;
554}
555
556
557/*
558 * parse the source unit recursively until it reaches to a terminal
559 * or a branched unit.
560 */
561static int check_input_term(mixer_build_t *state, int id, usb_audio_term_t *term)
562{
563 unsigned char *p1;
564
565 memset(term, 0, sizeof(*term));
566 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
567 term->id = id;
568 switch (p1[2]) {
569 case INPUT_TERMINAL:
570 term->type = combine_word(p1 + 4);
571 term->channels = p1[7];
572 term->chconfig = combine_word(p1 + 8);
573 term->name = p1[11];
574 return 0;
575 case FEATURE_UNIT:
576 id = p1[4];
577 break; /* continue to parse */
578 case MIXER_UNIT:
579 term->type = p1[2] << 16; /* virtual type */
580 term->channels = p1[5 + p1[4]];
581 term->chconfig = combine_word(p1 + 6 + p1[4]);
582 term->name = p1[p1[0] - 1];
583 return 0;
584 case SELECTOR_UNIT:
585 /* call recursively to retrieve the channel info */
586 if (check_input_term(state, p1[5], term) < 0)
587 return -ENODEV;
588 term->type = p1[2] << 16; /* virtual type */
589 term->id = id;
590 term->name = p1[9 + p1[0] - 1];
591 return 0;
592 case PROCESSING_UNIT:
593 case EXTENSION_UNIT:
594 if (p1[6] == 1) {
595 id = p1[7];
596 break; /* continue to parse */
597 }
598 term->type = p1[2] << 16; /* virtual type */
599 term->channels = p1[7 + p1[6]];
600 term->chconfig = combine_word(p1 + 8 + p1[6]);
601 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
602 return 0;
603 default:
604 return -ENODEV;
605 }
606 }
607 return -ENODEV;
608}
609
610
611/*
612 * Feature Unit
613 */
614
615/* feature unit control information */
616struct usb_feature_control_info {
617 const char *name;
618 unsigned int type; /* control type (mute, volume, etc.) */
619};
620
621static struct usb_feature_control_info audio_feature_info[] = {
622 { "Mute", USB_MIXER_INV_BOOLEAN },
623 { "Volume", USB_MIXER_S16 },
624 { "Tone Control - Bass", USB_MIXER_S8 },
625 { "Tone Control - Mid", USB_MIXER_S8 },
626 { "Tone Control - Treble", USB_MIXER_S8 },
627 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
628 { "Auto Gain Control", USB_MIXER_BOOLEAN },
629 { "Delay Control", USB_MIXER_U16 },
630 { "Bass Boost", USB_MIXER_BOOLEAN },
631 { "Loudness", USB_MIXER_BOOLEAN },
632};
633
634
635/* private_free callback */
636static void usb_mixer_elem_free(snd_kcontrol_t *kctl)
637{
638 if (kctl->private_data) {
639 kfree(kctl->private_data);
640 kctl->private_data = NULL;
641 }
642}
643
644
645/*
646 * interface to ALSA control for feature/mixer units
647 */
648
649/*
650 * retrieve the minimum and maximum values for the specified control
651 */
652static int get_min_max(usb_mixer_elem_info_t *cval, int default_min)
653{
654 /* for failsafe */
655 cval->min = default_min;
656 cval->max = cval->min + 1;
657 cval->res = 1;
658
659 if (cval->val_type == USB_MIXER_BOOLEAN ||
660 cval->val_type == USB_MIXER_INV_BOOLEAN) {
661 cval->initialized = 1;
662 } else {
663 int minchn = 0;
664 if (cval->cmask) {
665 int i;
666 for (i = 0; i < MAX_CHANNELS; i++)
667 if (cval->cmask & (1 << i)) {
668 minchn = i + 1;
669 break;
670 }
671 }
672 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
673 get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
84957a8a
CL		 674 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
675 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
1da177e4
LT		 676 return -EINVAL;
677 }
678 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
679 cval->res = 1;
680 } else {
681 int last_valid_res = cval->res;
682
683 while (cval->res > 1) {
684 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
685 break;
686 cval->res /= 2;
687 }
688 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
689 cval->res = last_valid_res;
690 }
691 if (cval->res == 0)
692 cval->res = 1;
693 cval->initialized = 1;
694 }
695 return 0;
696}
697
698
699/* get a feature/mixer unit info */
700static int mixer_ctl_feature_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
701{
702 usb_mixer_elem_info_t *cval = kcontrol->private_data;
703
704 if (cval->val_type == USB_MIXER_BOOLEAN ||
705 cval->val_type == USB_MIXER_INV_BOOLEAN)
706 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
707 else
708 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
709 uinfo->count = cval->channels;
710 if (cval->val_type == USB_MIXER_BOOLEAN ||
711 cval->val_type == USB_MIXER_INV_BOOLEAN) {
712 uinfo->value.integer.min = 0;
713 uinfo->value.integer.max = 1;
714 } else {
715 if (! cval->initialized)
716 get_min_max(cval, 0);
717 uinfo->value.integer.min = 0;
718 uinfo->value.integer.max = (cval->max - cval->min) / cval->res;
719 }
720 return 0;
721}
722
723/* get the current value from feature/mixer unit */
724static int mixer_ctl_feature_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
725{
726 usb_mixer_elem_info_t *cval = kcontrol->private_data;
727 int c, cnt, val, err;
728
729 if (cval->cmask) {
730 cnt = 0;
731 for (c = 0; c < MAX_CHANNELS; c++) {
732 if (cval->cmask & (1 << c)) {
733 err = get_cur_mix_value(cval, c + 1, &val);
734 if (err < 0) {
84957a8a 735 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 736 ucontrol->value.integer.value[0] = cval->min;
737 return 0;
738 }
739 snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err);
740 return err;
741 }
742 val = get_relative_value(cval, val);
743 ucontrol->value.integer.value[cnt] = val;
744 cnt++;
745 }
746 }
747 } else {
748 /* master channel */
749 err = get_cur_mix_value(cval, 0, &val);
750 if (err < 0) {
84957a8a 751 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 752 ucontrol->value.integer.value[0] = cval->min;
753 return 0;
754 }
755 snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err);
756 return err;
757 }
758 val = get_relative_value(cval, val);
759 ucontrol->value.integer.value[0] = val;
760 }
761 return 0;
762}
763
764/* put the current value to feature/mixer unit */
765static int mixer_ctl_feature_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
766{
767 usb_mixer_elem_info_t *cval = kcontrol->private_data;
768 int c, cnt, val, oval, err;
769 int changed = 0;
770
771 if (cval->cmask) {
772 cnt = 0;
773 for (c = 0; c < MAX_CHANNELS; c++) {
774 if (cval->cmask & (1 << c)) {
775 err = get_cur_mix_value(cval, c + 1, &oval);
776 if (err < 0) {
84957a8a 777 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 778 return 0;
779 return err;
780 }
781 val = ucontrol->value.integer.value[cnt];
782 val = get_abs_value(cval, val);
783 if (oval != val) {
784 set_cur_mix_value(cval, c + 1, val);
785 changed = 1;
786 }
787 get_cur_mix_value(cval, c + 1, &val);
788 cnt++;
789 }
790 }
791 } else {
792 /* master channel */
793 err = get_cur_mix_value(cval, 0, &oval);
84957a8a 794 if (err < 0 && cval->mixer->ignore_ctl_error)
1da177e4
LT		 795 return 0;
796 if (err < 0)
797 return err;
798 val = ucontrol->value.integer.value[0];
799 val = get_abs_value(cval, val);
800 if (val != oval) {
801 set_cur_mix_value(cval, 0, val);
802 changed = 1;
803 }
804 }
805 return changed;
806}
807
808static snd_kcontrol_new_t usb_feature_unit_ctl = {
809 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
810 .name = "", /* will be filled later manually */
811 .info = mixer_ctl_feature_info,
812 .get = mixer_ctl_feature_get,
813 .put = mixer_ctl_feature_put,
814};
815
816
817/*
818 * build a feature control
819 */
820
821static void build_feature_ctl(mixer_build_t *state, unsigned char *desc,
822 unsigned int ctl_mask, int control,
823 usb_audio_term_t *iterm, int unitid)
824{
825 unsigned int len = 0;
826 int mapped_name = 0;
827 int nameid = desc[desc[0] - 1];
828 snd_kcontrol_t *kctl;
829 usb_mixer_elem_info_t *cval;
830
831 control++; /* change from zero-based to 1-based value */
832
833 if (control == USB_FEATURE_GEQ) {
834 /* FIXME: not supported yet */
835 return;
836 }
837
838 if (check_ignored_ctl(state, unitid, control))
839 return;
840
841 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
842 if (! cval) {
843 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
844 return;
845 }
84957a8a 846 cval->mixer = state->mixer;
1da177e4
LT		 847 cval->id = unitid;
848 cval->control = control;
849 cval->cmask = ctl_mask;
850 cval->val_type = audio_feature_info[control-1].type;
851 if (ctl_mask == 0)
852 cval->channels = 1; /* master channel */
853 else {
854 int i, c = 0;
855 for (i = 0; i < 16; i++)
856 if (ctl_mask & (1 << i))
857 c++;
858 cval->channels = c;
859 }
860
861 /* get min/max values */
862 get_min_max(cval, 0);
863
864 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
865 if (! kctl) {
866 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
867 kfree(cval);
868 return;
869 }
870 kctl->private_free = usb_mixer_elem_free;
871
872 len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
873 mapped_name = len != 0;
874 if (! len && nameid)
875 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
876
877 switch (control) {
878 case USB_FEATURE_MUTE:
879 case USB_FEATURE_VOLUME:
880 /* determine the control name. the rule is:
881 * - if a name id is given in descriptor, use it.
882 * - if the connected input can be determined, then use the name
883 * of terminal type.
884 * - if the connected output can be determined, use it.
885 * - otherwise, anonymous name.
886 */
887 if (! len) {
888 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
889 if (! len)
890 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
891 if (! len)
892 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
893 "Feature %d", unitid);
894 }
895 /* determine the stream direction:
896 * if the connected output is USB stream, then it's likely a
897 * capture stream. otherwise it should be playback (hopefully :)
898 */
899 if (! mapped_name && ! (state->oterm.type >> 16)) {
900 if ((state->oterm.type & 0xff00) == 0x0100) {
901 len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name));
902 } else {
903 len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name));
904 }
905 }
906 strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
907 sizeof(kctl->id.name));
908 break;
909
910 default:
911 if (! len)
912 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
913 sizeof(kctl->id.name));
914 break;
915 }
916
917 /* quirk for UDA1321/N101 */
918 /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
919 /* is not very clear from datasheets */
920 /* I hope that the min value is -15360 for newer firmware --jk */
27d10f56
CL		 921 switch (state->chip->usb_id) {
922 case USB_ID(0x0471, 0x0101):
923 case USB_ID(0x0471, 0x0104):
924 case USB_ID(0x0471, 0x0105):
925 case USB_ID(0x0672, 0x1041):
926 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
927 cval->min == -15616) {
928 snd_printk("using volume control quirk for the UDA1321/N101 chip\n");
929 cval->max = -256;
930 }
1da177e4
LT		 931 }
932
933 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
934 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
84957a8a 935 add_control_to_empty(state, kctl);
1da177e4
LT		 936}
937
938
939
940/*
941 * parse a feature unit
942 *
943 * most of controlls are defined here.
944 */
945static int parse_audio_feature_unit(mixer_build_t *state, int unitid, unsigned char *ftr)
946{
947 int channels, i, j;
948 usb_audio_term_t iterm;
949 unsigned int master_bits, first_ch_bits;
950 int err, csize;
951
952 if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
953 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
954 return -EINVAL;
955 }
956
957 /* parse the source unit */
958 if ((err = parse_audio_unit(state, ftr[4])) < 0)
959 return err;
960
961 /* determine the input source type and name */
962 if (check_input_term(state, ftr[4], &iterm) < 0)
963 return -EINVAL;
964
965 channels = (ftr[0] - 7) / csize - 1;
966
967 master_bits = snd_usb_combine_bytes(ftr + 6, csize);
968 if (channels > 0)
969 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
970 else
971 first_ch_bits = 0;
972 /* check all control types */
973 for (i = 0; i < 10; i++) {
974 unsigned int ch_bits = 0;
975 for (j = 0; j < channels; j++) {
976 unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize);
977 if (mask & (1 << i))
978 ch_bits |= (1 << j);
979 }
980 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
981 build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid);
982 if (master_bits & (1 << i))
983 build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
984 }
985
986 return 0;
987}
988
989
990/*
991 * Mixer Unit
992 */
993
994/*
995 * build a mixer unit control
996 *
997 * the callbacks are identical with feature unit.
998 * input channel number (zero based) is given in control field instead.
999 */
1000
1001static void build_mixer_unit_ctl(mixer_build_t *state, unsigned char *desc,
1002 int in_pin, int in_ch, int unitid,
1003 usb_audio_term_t *iterm)
1004{
1005 usb_mixer_elem_info_t *cval;
1006 unsigned int input_pins = desc[4];
1007 unsigned int num_outs = desc[5 + input_pins];
1008 unsigned int i, len;
1009 snd_kcontrol_t *kctl;
1010
1011 if (check_ignored_ctl(state, unitid, 0))
1012 return;
1013
1014 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1015 if (! cval)
1016 return;
1017
84957a8a 1018 cval->mixer = state->mixer;
1da177e4
LT		 1019 cval->id = unitid;
1020 cval->control = in_ch + 1; /* based on 1 */
1021 cval->val_type = USB_MIXER_S16;
1022 for (i = 0; i < num_outs; i++) {
1023 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1024 cval->cmask |= (1 << i);
1025 cval->channels++;
1026 }
1027 }
1028
1029 /* get min/max values */
1030 get_min_max(cval, 0);
1031
1032 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1033 if (! kctl) {
1034 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1035 kfree(cval);
1036 return;
1037 }
1038 kctl->private_free = usb_mixer_elem_free;
1039
1040 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1041 if (! len)
1042 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1043 if (! len)
1044 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1045 strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name));
1046
1047 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1048 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1049 add_control_to_empty(state, kctl);
1da177e4
LT		 1050}
1051
1052
1053/*
1054 * parse a mixer unit
1055 */
1056static int parse_audio_mixer_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1057{
1058 usb_audio_term_t iterm;
1059 int input_pins, num_ins, num_outs;
1060 int pin, ich, err;
1061
1062 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1063 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1064 return -EINVAL;
1065 }
1066 /* no bmControls field (e.g. Maya44) -> ignore */
1067 if (desc[0] <= 10 + input_pins) {
1068 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1069 return 0;
1070 }
1071
1072 num_ins = 0;
1073 ich = 0;
1074 for (pin = 0; pin < input_pins; pin++) {
1075 err = parse_audio_unit(state, desc[5 + pin]);
1076 if (err < 0)
1077 return err;
1078 err = check_input_term(state, desc[5 + pin], &iterm);
1079 if (err < 0)
1080 return err;
1081 num_ins += iterm.channels;
1082 for (; ich < num_ins; ++ich) {
1083 int och, ich_has_controls = 0;
1084
1085 for (och = 0; och < num_outs; ++och) {
1086 if (check_matrix_bitmap(desc + 9 + input_pins,
1087 ich, och, num_outs)) {
1088 ich_has_controls = 1;
1089 break;
1090 }
1091 }
1092 if (ich_has_controls)
1093 build_mixer_unit_ctl(state, desc, pin, ich,
1094 unitid, &iterm);
1095 }
1096 }
1097 return 0;
1098}
1099
1100
1101/*
1102 * Processing Unit / Extension Unit
1103 */
1104
1105/* get callback for processing/extension unit */
1106static int mixer_ctl_procunit_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1107{
1108 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1109 int err, val;
1110
1111 err = get_cur_ctl_value(cval, cval->control << 8, &val);
84957a8a 1112 if (err < 0 && cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1113 ucontrol->value.integer.value[0] = cval->min;
1114 return 0;
1115 }
1116 if (err < 0)
1117 return err;
1118 val = get_relative_value(cval, val);
1119 ucontrol->value.integer.value[0] = val;
1120 return 0;
1121}
1122
1123/* put callback for processing/extension unit */
1124static int mixer_ctl_procunit_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1125{
1126 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1127 int val, oval, err;
1128
1129 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1130 if (err < 0) {
84957a8a 1131 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1132 return 0;
1133 return err;
1134 }
1135 val = ucontrol->value.integer.value[0];
1136 val = get_abs_value(cval, val);
1137 if (val != oval) {
1138 set_cur_ctl_value(cval, cval->control << 8, val);
1139 return 1;
1140 }
1141 return 0;
1142}
1143
1144/* alsa control interface for processing/extension unit */
1145static snd_kcontrol_new_t mixer_procunit_ctl = {
1146 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1147 .name = "", /* will be filled later */
1148 .info = mixer_ctl_feature_info,
1149 .get = mixer_ctl_procunit_get,
1150 .put = mixer_ctl_procunit_put,
1151};
1152
1153
1154/*
1155 * predefined data for processing units
1156 */
1157struct procunit_value_info {
1158 int control;
1159 char *suffix;
1160 int val_type;
1161 int min_value;
1162};
1163
1164struct procunit_info {
1165 int type;
1166 char *name;
1167 struct procunit_value_info *values;
1168};
1169
1170static struct procunit_value_info updown_proc_info[] = {
1171 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1172 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1173 { 0 }
1174};
1175static struct procunit_value_info prologic_proc_info[] = {
1176 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1177 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1178 { 0 }
1179};
1180static struct procunit_value_info threed_enh_proc_info[] = {
1181 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1182 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1183 { 0 }
1184};
1185static struct procunit_value_info reverb_proc_info[] = {
1186 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1187 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1188 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1189 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1190 { 0 }
1191};
1192static struct procunit_value_info chorus_proc_info[] = {
1193 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1194 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1195 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1196 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1197 { 0 }
1198};
1199static struct procunit_value_info dcr_proc_info[] = {
1200 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1201 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1202 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1203 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1204 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1205 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1206 { 0 }
1207};
1208
1209static struct procunit_info procunits[] = {
1210 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1211 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1212 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1213 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1214 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1215 { USB_PROC_DCR, "DCR", dcr_proc_info },
1216 { 0 },
1217};
1218
1219/*
1220 * build a processing/extension unit
1221 */
1222static int build_audio_procunit(mixer_build_t *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1223{
1224 int num_ins = dsc[6];
1225 usb_mixer_elem_info_t *cval;
1226 snd_kcontrol_t *kctl;
1227 int i, err, nameid, type, len;
1228 struct procunit_info *info;
1229 struct procunit_value_info *valinfo;
1230 static struct procunit_value_info default_value_info[] = {
1231 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1232 { 0 }
1233 };
1234 static struct procunit_info default_info = {
1235 0, NULL, default_value_info
1236 };
1237
1238 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1239 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1240 return -EINVAL;
1241 }
1242
1243 for (i = 0; i < num_ins; i++) {
1244 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1245 return err;
1246 }
1247
1248 type = combine_word(&dsc[4]);
1da177e4
LT		 1249 for (info = list; info && info->type; info++)
1250 if (info->type == type)
1251 break;
1252 if (! info || ! info->type)
1253 info = &default_info;
1254
1255 for (valinfo = info->values; valinfo->control; valinfo++) {
1256 /* FIXME: bitmap might be longer than 8bit */
1257 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1258 continue;
1259 if (check_ignored_ctl(state, unitid, valinfo->control))
1260 continue;
1261 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1262 if (! cval) {
1263 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1264 return -ENOMEM;
1265 }
84957a8a 1266 cval->mixer = state->mixer;
1da177e4
LT		 1267 cval->id = unitid;
1268 cval->control = valinfo->control;
1269 cval->val_type = valinfo->val_type;
1270 cval->channels = 1;
1271
1272 /* get min/max values */
1273 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1274 /* FIXME: hard-coded */
1275 cval->min = 1;
1276 cval->max = dsc[15];
1277 cval->res = 1;
1278 cval->initialized = 1;
1279 } else
1280 get_min_max(cval, valinfo->min_value);
1281
1282 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1283 if (! kctl) {
1284 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1285 kfree(cval);
1286 return -ENOMEM;
1287 }
1288 kctl->private_free = usb_mixer_elem_free;
1289
1290 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
1291 ;
1292 else if (info->name)
1293 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1294 else {
1295 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1296 len = 0;
1297 if (nameid)
1298 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1299 if (! len)
1300 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1301 }
1302 strlcat(kctl->id.name, " ", sizeof(kctl->id.name));
1303 strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name));
1304
1305 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1306 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1307 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1308 return err;
1309 }
1310 return 0;
1311}
1312
1313
1314static int parse_audio_processing_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1315{
1316 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1317}
1318
1319static int parse_audio_extension_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1320{
1321 return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
1322}
1323
1324
1325/*
1326 * Selector Unit
1327 */
1328
1329/* info callback for selector unit
1330 * use an enumerator type for routing
1331 */
1332static int mixer_ctl_selector_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1333{
1334 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1335 char **itemlist = (char **)kcontrol->private_value;
1336
1337 snd_assert(itemlist, return -EINVAL);
1338 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1339 uinfo->count = 1;
1340 uinfo->value.enumerated.items = cval->max;
1341 if ((int)uinfo->value.enumerated.item >= cval->max)
1342 uinfo->value.enumerated.item = cval->max - 1;
1343 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1344 return 0;
1345}
1346
1347/* get callback for selector unit */
1348static int mixer_ctl_selector_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1349{
1350 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1351 int val, err;
1352
1353 err = get_cur_ctl_value(cval, 0, &val);
1354 if (err < 0) {
84957a8a 1355 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1356 ucontrol->value.enumerated.item[0] = 0;
1357 return 0;
1358 }
1359 return err;
1360 }
1361 val = get_relative_value(cval, val);
1362 ucontrol->value.enumerated.item[0] = val;
1363 return 0;
1364}
1365
1366/* put callback for selector unit */
1367static int mixer_ctl_selector_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1368{
1369 usb_mixer_elem_info_t *cval = kcontrol->private_data;
1370 int val, oval, err;
1371
1372 err = get_cur_ctl_value(cval, 0, &oval);
1373 if (err < 0) {
84957a8a 1374 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1375 return 0;
1376 return err;
1377 }
1378 val = ucontrol->value.enumerated.item[0];
1379 val = get_abs_value(cval, val);
1380 if (val != oval) {
1381 set_cur_ctl_value(cval, 0, val);
1382 return 1;
1383 }
1384 return 0;
1385}
1386
1387/* alsa control interface for selector unit */
1388static snd_kcontrol_new_t mixer_selectunit_ctl = {
1389 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1390 .name = "", /* will be filled later */
1391 .info = mixer_ctl_selector_info,
1392 .get = mixer_ctl_selector_get,
1393 .put = mixer_ctl_selector_put,
1394};
1395
1396
1397/* private free callback.
1398 * free both private_data and private_value
1399 */
1400static void usb_mixer_selector_elem_free(snd_kcontrol_t *kctl)
1401{
1402 int i, num_ins = 0;
1403
1404 if (kctl->private_data) {
1405 usb_mixer_elem_info_t *cval = kctl->private_data;
1406 num_ins = cval->max;
1407 kfree(cval);
1408 kctl->private_data = NULL;
1409 }
1410 if (kctl->private_value) {
1411 char **itemlist = (char **)kctl->private_value;
1412 for (i = 0; i < num_ins; i++)
1413 kfree(itemlist[i]);
1414 kfree(itemlist);
1415 kctl->private_value = 0;
1416 }
1417}
1418
1419/*
1420 * parse a selector unit
1421 */
1422static int parse_audio_selector_unit(mixer_build_t *state, int unitid, unsigned char *desc)
1423{
1424 unsigned int num_ins = desc[4];
1425 unsigned int i, nameid, len;
1426 int err;
1427 usb_mixer_elem_info_t *cval;
1428 snd_kcontrol_t *kctl;
1429 char **namelist;
1430
1431 if (! num_ins || desc[0] < 6 + num_ins) {
1432 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1433 return -EINVAL;
1434 }
1435
1436 for (i = 0; i < num_ins; i++) {
1437 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1438 return err;
1439 }
1440
1441 if (num_ins == 1) /* only one ? nonsense! */
1442 return 0;
1443
1444 if (check_ignored_ctl(state, unitid, 0))
1445 return 0;
1446
1447 cval = kcalloc(1, sizeof(*cval), GFP_KERNEL);
1448 if (! cval) {
1449 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1450 return -ENOMEM;
1451 }
84957a8a 1452 cval->mixer = state->mixer;
1da177e4
LT		 1453 cval->id = unitid;
1454 cval->val_type = USB_MIXER_U8;
1455 cval->channels = 1;
1456 cval->min = 1;
1457 cval->max = num_ins;
1458 cval->res = 1;
1459 cval->initialized = 1;
1460
1461 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1462 if (! namelist) {
1463 snd_printk(KERN_ERR "cannot malloc\n");
1464 kfree(cval);
1465 return -ENOMEM;
1466 }
1467#define MAX_ITEM_NAME_LEN 64
1468 for (i = 0; i < num_ins; i++) {
1469 usb_audio_term_t iterm;
1470 len = 0;
1471 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1472 if (! namelist[i]) {
1473 snd_printk(KERN_ERR "cannot malloc\n");
1474 while (--i > 0)
1475 kfree(namelist[i]);
1476 kfree(namelist);
1477 kfree(cval);
1478 return -ENOMEM;
1479 }
8e062ec7
CL		 1480 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1481 MAX_ITEM_NAME_LEN);
1482 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1da177e4
LT		 1483 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1484 if (! len)
1485 sprintf(namelist[i], "Input %d", i);
1486 }
1487
1488 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1489 if (! kctl) {
1490 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1491 kfree(cval);
1492 return -ENOMEM;
1493 }
1494 kctl->private_value = (unsigned long)namelist;
1495 kctl->private_free = usb_mixer_selector_elem_free;
1496
1497 nameid = desc[desc[0] - 1];
1498 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1499 if (len)
1500 ;
1501 else if (nameid)
1502 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1503 else {
1504 len = get_term_name(state, &state->oterm,
1505 kctl->id.name, sizeof(kctl->id.name), 0);
1506 if (! len)
1507 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1508
1509 if ((state->oterm.type & 0xff00) == 0x0100)
1510 strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name));
1511 else
1512 strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name));
1513 }
1514
1515 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1516 cval->id, kctl->id.name, num_ins);
84957a8a 1517 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1518 return err;
1519
1520 return 0;
1521}
1522
1523
1524/*
1525 * parse an audio unit recursively
1526 */
1527
1528static int parse_audio_unit(mixer_build_t *state, int unitid)
1529{
1530 unsigned char *p1;
1531
1532 if (test_and_set_bit(unitid, state->unitbitmap))
1533 return 0; /* the unit already visited */
1534
1535 p1 = find_audio_control_unit(state, unitid);
1536 if (!p1) {
1537 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1538 return -EINVAL;
1539 }
1540
1541 switch (p1[2]) {
1542 case INPUT_TERMINAL:
1543 return 0; /* NOP */
1544 case MIXER_UNIT:
1545 return parse_audio_mixer_unit(state, unitid, p1);
1546 case SELECTOR_UNIT:
1547 return parse_audio_selector_unit(state, unitid, p1);
1548 case FEATURE_UNIT:
1549 return parse_audio_feature_unit(state, unitid, p1);
1550 case PROCESSING_UNIT:
1551 return parse_audio_processing_unit(state, unitid, p1);
1552 case EXTENSION_UNIT:
1553 return parse_audio_extension_unit(state, unitid, p1);
1554 default:
1555 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1556 return -EINVAL;
1557 }
1558}
1559
84957a8a
CL		 1560static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1561{
6639b6c2
CL		 1562 kfree(mixer->id_elems);
1563 if (mixer->urb) {
1564 kfree(mixer->urb->transfer_buffer);
1565 usb_free_urb(mixer->urb);
1566 }
b259b10c
CL		 1567 if (mixer->rc_urb)
1568 usb_free_urb(mixer->rc_urb);
1569 kfree(mixer->rc_setup_packet);
84957a8a
CL		 1570 kfree(mixer);
1571}
1572
1573static int snd_usb_mixer_dev_free(snd_device_t *device)
1574{
1575 struct usb_mixer_interface *mixer = device->device_data;
1576 snd_usb_mixer_free(mixer);
1577 return 0;
1578}
1579
1da177e4
LT		 1580/*
1581 * create mixer controls
1582 *
1583 * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1584 */
84957a8a 1585static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1da177e4
LT		 1586{
1587 unsigned char *desc;
1588 mixer_build_t state;
1589 int err;
1590 const struct usbmix_ctl_map *map;
84957a8a 1591 struct usb_host_interface *hostif;
1da177e4 1592
84957a8a 1593 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1da177e4 1594 memset(&state, 0, sizeof(state));
84957a8a
CL		 1595 state.chip = mixer->chip;
1596 state.mixer = mixer;
1da177e4
LT		 1597 state.buffer = hostif->extra;
1598 state.buflen = hostif->extralen;
1da177e4
LT		 1599
1600 /* check the mapping table */
27d10f56
CL		 1601 for (map = usbmix_ctl_maps; map->id; map++) {
1602 if (map->id == state.chip->usb_id) {
1da177e4 1603 state.map = map->map;
8e062ec7 1604 state.selector_map = map->selector_map;
84957a8a 1605 mixer->ignore_ctl_error = map->ignore_ctl_error;
1da177e4
LT		 1606 break;
1607 }
1608 }
1da177e4
LT		 1609
1610 desc = NULL;
1611 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
1612 if (desc[0] < 9)
1613 continue; /* invalid descriptor? */
1614 set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */
1615 state.oterm.id = desc[3];
1616 state.oterm.type = combine_word(&desc[4]);
1617 state.oterm.name = desc[8];
1618 err = parse_audio_unit(&state, desc[7]);
1619 if (err < 0)
1620 return err;
1621 }
1622 return 0;
1623}
84957a8a 1624
6639b6c2
CL		 1625static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1626 int unitid)
1627{
1628 usb_mixer_elem_info_t *info;
1629
1630 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1631 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1632 info->elem_id);
1633}
1634
b259b10c
CL		 1635static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1636 int unitid)
1637{
1638 /* SB remote control */
1639 if (mixer->rc_type != RC_NONE && unitid == 0) {
1640 /* read control code from device memory */
1641 mixer->rc_urb->dev = mixer->chip->dev;
1642 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1643 }
1644}
1645
6639b6c2
CL		 1646static void snd_usb_mixer_status_complete(struct urb *urb, struct pt_regs *regs)
1647{
1648 struct usb_mixer_interface *mixer = urb->context;
1649
1650 if (urb->status == 0) {
1651 u8 *buf = urb->transfer_buffer;
1652 int i;
1653
1654 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1655 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1656 buf[0], buf[1]);
1657 /* ignore any notifications not from the control interface */
1658 if ((buf[0] & 0x0f) != 0)
1659 continue;
1660 if (!(buf[0] & 0x40))
1661 snd_usb_mixer_notify_id(mixer, buf[1]);
b259b10c
CL		 1662 else
1663 snd_usb_mixer_memory_change(mixer, buf[1]);
6639b6c2
CL		 1664 }
1665 }
1666 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1667 urb->dev = mixer->chip->dev;
1668 usb_submit_urb(urb, GFP_ATOMIC);
1669 }
1670}
1671
1672/* create the handler for the optional status interrupt endpoint */
1673static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1674{
1675 struct usb_host_interface *hostif;
1676 struct usb_endpoint_descriptor *ep;
1677 void *transfer_buffer;
1678 int buffer_length;
1679 unsigned int epnum;
1680
1681 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1682 /* we need one interrupt input endpoint */
1683 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1684 return 0;
1685 ep = get_endpoint(hostif, 0);
1686 if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
1687 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1688 return 0;
1689
1690 epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1691 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1692 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1693 if (!transfer_buffer)
1694 return -ENOMEM;
1695 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1696 if (!mixer->urb) {
1697 kfree(transfer_buffer);
1698 return -ENOMEM;
1699 }
1700 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1701 usb_rcvintpipe(mixer->chip->dev, epnum),
1702 transfer_buffer, buffer_length,
1703 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1704 usb_submit_urb(mixer->urb, GFP_KERNEL);
1705 return 0;
1706}
1707
b259b10c
CL		 1708static void snd_usb_soundblaster_remote_complete(struct urb *urb,
1709 struct pt_regs *regs)
1710{
1711 struct usb_mixer_interface *mixer = urb->context;
1712 /*
1713 * format of remote control data:
1714 * Extigy: xx 00
1715 * Audigy 2 NX: 06 80 xx 00 00 00
1716 */
1717 int offset = mixer->rc_type == RC_EXTIGY ? 0 : 2;
1718 u32 code;
1719
1720 if (urb->status < 0 || urb->actual_length <= offset)
1721 return;
1722 code = mixer->rc_buffer[offset];
1723 /* the Mute button actually changes the mixer control */
1724 if (code == 13)
1725 snd_usb_mixer_notify_id(mixer, 18);
1726 mixer->rc_code = code;
1727 wmb();
1728 wake_up(&mixer->rc_waitq);
1729}
1730
1731static int snd_usb_sbrc_hwdep_open(snd_hwdep_t *hw, struct file *file)
1732{
1733 struct usb_mixer_interface *mixer = hw->private_data;
1734
1735 if (test_and_set_bit(0, &mixer->rc_hwdep_open))
1736 return -EBUSY;
1737 return 0;
1738}
1739
1740static int snd_usb_sbrc_hwdep_release(snd_hwdep_t *hw, struct file *file)
1741{
1742 struct usb_mixer_interface *mixer = hw->private_data;
1743
1744 clear_bit(0, &mixer->rc_hwdep_open);
1745 smp_mb__after_clear_bit();
1746 return 0;
1747}
1748
1749static long snd_usb_sbrc_hwdep_read(snd_hwdep_t *hw, char __user *buf,
1750 long count, loff_t *offset)
1751{
1752 struct usb_mixer_interface *mixer = hw->private_data;
1753 int err;
1754 u32 rc_code;
1755
434b7f56 1756 if (count != 1 && count != 4)
b259b10c
CL		 1757 return -EINVAL;
1758 err = wait_event_interruptible(mixer->rc_waitq,
1759 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1760 if (err == 0) {
434b7f56
CL		 1761 if (count == 1)
1762 err = put_user(rc_code, buf);
1763 else
1764 err = put_user(rc_code, (u32 __user *)buf);
b259b10c
CL		 1765 }
1766 return err < 0 ? err : count;
1767}
1768
1769static unsigned int snd_usb_sbrc_hwdep_poll(snd_hwdep_t *hw, struct file *file,
1770 poll_table *wait)
1771{
1772 struct usb_mixer_interface *mixer = hw->private_data;
1773
1774 poll_wait(file, &mixer->rc_waitq, wait);
1775 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
1776}
1777
434b7f56
CL		 1778static int snd_usb_sbrc_hwdep_ioctl(snd_hwdep_t *hw, struct file *file,
1779 unsigned int cmd, unsigned long arg)
1780{
1781 u32 __user *argp = (u32 __user *)arg;
1782 u32 mode;
1783
1784 switch (cmd) {
1785 case LIRC_GET_FEATURES:
1786 return put_user(LIRC_CAN_REC_CODE, argp);
1787 case LIRC_GET_REC_MODE:
1788 return put_user(LIRC_MODE_CODE, argp);
1789 case LIRC_SET_REC_MODE:
1790 if (get_user(mode, argp))
1791 return -EFAULT;
1792 return mode == LIRC_MODE_CODE ? 0 : -ENOSYS;
1793 }
1794 return -ENOTTY;
1795}
1796
b259b10c
CL		 1797static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
1798{
1799 snd_hwdep_t *hwdep;
1800 int err, len;
1801
27d10f56
CL		 1802 switch (mixer->chip->usb_id) {
1803 case USB_ID(0x041e, 0x3000):
b259b10c
CL		 1804 mixer->rc_type = RC_EXTIGY;
1805 len = 2;
1806 break;
27d10f56 1807 case USB_ID(0x041e, 0x3020):
b259b10c
CL		 1808 mixer->rc_type = RC_AUDIGY2NX;
1809 len = 6;
1810 break;
1811 default:
1812 return 0;
1813 }
1814
1815 init_waitqueue_head(&mixer->rc_waitq);
1816 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
1817 if (err < 0)
1818 return err;
1819 snprintf(hwdep->name, sizeof(hwdep->name),
1820 "%s remote control", mixer->chip->card->shortname);
1821 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
1822 hwdep->private_data = mixer;
1823 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
1824 hwdep->ops.open = snd_usb_sbrc_hwdep_open;
1825 hwdep->ops.release = snd_usb_sbrc_hwdep_release;
1826 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
434b7f56 1827 hwdep->ops.ioctl = snd_usb_sbrc_hwdep_ioctl;
b259b10c
CL		 1828
1829 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
1830 if (!mixer->rc_urb)
1831 return -ENOMEM;
1832 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
1833 if (!mixer->rc_setup_packet) {
1834 usb_free_urb(mixer->rc_urb);
1835 mixer->rc_urb = NULL;
1836 return -ENOMEM;
1837 }
1838 mixer->rc_setup_packet->bRequestType =
1839 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
1840 mixer->rc_setup_packet->bRequest = GET_MEM;
1841 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
1842 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
1843 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
1844 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
1845 usb_rcvctrlpipe(mixer->chip->dev, 0),
1846 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
1847 snd_usb_soundblaster_remote_complete, mixer);
1848 return 0;
1849}
1850
93446edc
CL		 1851static int snd_audigy2nx_led_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1852{
1853 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1854 uinfo->count = 1;
1855 uinfo->value.integer.min = 0;
1856 uinfo->value.integer.max = 1;
1857 return 0;
1858}
1859
1860static int snd_audigy2nx_led_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1861{
1862 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1863 int index = kcontrol->private_value;
1864
1865 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
1866 return 0;
1867}
1868
1869static int snd_audigy2nx_led_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1870{
1871 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1872 int index = kcontrol->private_value;
1873 int value = ucontrol->value.integer.value[0];
1874 int err, changed;
1875
1876 if (value > 1)
1877 return -EINVAL;
1878 changed = value != mixer->audigy2nx_leds[index];
1879 err = snd_usb_ctl_msg(mixer->chip->dev,
1880 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
1881 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1882 value, index + 2, NULL, 0, 100);
1883 if (err < 0)
1884 return err;
1885 mixer->audigy2nx_leds[index] = value;
1886 return changed;
1887}
1888
1889static snd_kcontrol_new_t snd_audigy2nx_controls[] = {
1890 {
1891 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1892 .name = "CMSS LED Switch",
1893 .info = snd_audigy2nx_led_info,
1894 .get = snd_audigy2nx_led_get,
1895 .put = snd_audigy2nx_led_put,
1896 .private_value = 0,
1897 },
1898 {
1899 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1900 .name = "Power LED Switch",
1901 .info = snd_audigy2nx_led_info,
1902 .get = snd_audigy2nx_led_get,
1903 .put = snd_audigy2nx_led_put,
1904 .private_value = 1,
1905 },
1906 {
1907 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1908 .name = "Dolby Digital LED Switch",
1909 .info = snd_audigy2nx_led_info,
1910 .get = snd_audigy2nx_led_get,
1911 .put = snd_audigy2nx_led_put,
1912 .private_value = 2,
1913 },
1914};
1915
1916static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
1917{
1918 int i, err;
1919
1920 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
1921 err = snd_ctl_add(mixer->chip->card,
1922 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
1923 if (err < 0)
1924 return err;
1925 }
1926 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
1927 return 0;
1928}
1929
84957a8a
CL		 1930int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
1931{
1932 static snd_device_ops_t dev_ops = {
1933 .dev_free = snd_usb_mixer_dev_free
1934 };
1935 struct usb_mixer_interface *mixer;
1936 int err;
1937
1938 strcpy(chip->card->mixername, "USB Mixer");
1939
1940 mixer = kcalloc(1, sizeof(*mixer), GFP_KERNEL);
1941 if (!mixer)
1942 return -ENOMEM;
1943 mixer->chip = chip;
1944 mixer->ctrlif = ctrlif;
1945#ifdef IGNORE_CTL_ERROR
1946 mixer->ignore_ctl_error = 1;
1947#endif
6639b6c2
CL		 1948 mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
1949 if (!mixer->id_elems) {
1950 kfree(mixer);
1951 return -ENOMEM;
1952 }
84957a8a 1953
6639b6c2 1954 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
93446edc
CL		 1955 (err = snd_usb_mixer_status_create(mixer)) < 0)
1956 goto _error;
84957a8a 1957
93446edc
CL		 1958 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
1959 goto _error;
1960
1961 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) {
1962 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
1963 goto _error;
b259b10c
CL		 1964 }
1965
84957a8a 1966 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
93446edc
CL		 1967 if (err < 0)
1968 goto _error;
84957a8a
CL		 1969 list_add(&mixer->list, &chip->mixer_list);
1970 return 0;
93446edc
CL		 1971
1972_error:
1973 snd_usb_mixer_free(mixer);
1974 return err;
84957a8a
CL		 1975}
1976
1977void snd_usb_mixer_disconnect(struct list_head *p)
1978{
6639b6c2
CL		 1979 struct usb_mixer_interface *mixer;
1980
1981 mixer = list_entry(p, struct usb_mixer_interface, list);
1982 if (mixer->urb)
1983 usb_kill_urb(mixer->urb);
b259b10c
CL		 1984 if (mixer->rc_urb)
1985 usb_kill_urb(mixer->rc_urb);
84957a8a 1986}
Linux kernel - Deliverables
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