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ALSA: usb-audio: refactor code
[mirror_ubuntu-artful-kernel.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
1da177e4
LT		 29#include <linux/bitops.h>
30#include <linux/init.h>
31#include <linux/list.h>
32#include <linux/slab.h>
33#include <linux/string.h>
34#include <linux/usb.h>
28e1b773
DM		 35#include <linux/usb/audio.h>
36
1da177e4
LT		 37#include <sound/core.h>
38#include <sound/control.h>
b259b10c 39#include <sound/hwdep.h>
aafad562 40#include <sound/info.h>
7bc5ba7e 41#include <sound/tlv.h>
1da177e4
LT		 42
43#include "usbaudio.h"
3e1aebef 44#include "usbmixer.h"
e5779998 45#include "helper.h"
1da177e4 46
1da177e4
LT		 47/*
48 */
49
50/* ignore error from controls - for debugging */
51/* #define IGNORE_CTL_ERROR */
52
4d1a70da
RC		 53/*
54 * Sound Blaster remote control configuration
55 *
56 * format of remote control data:
57 * Extigy: xx 00
58 * Audigy 2 NX: 06 80 xx 00 00 00
59 * Live! 24-bit: 06 80 xx yy 22 83
60 */
61static const struct rc_config {
62 u32 usb_id;
63 u8 offset;
64 u8 length;
65 u8 packet_length;
b9c196e1 66 u8 min_packet_length; /* minimum accepted length of the URB result */
4d1a70da
RC		 67 u8 mute_mixer_id;
68 u32 mute_code;
69} rc_configs[] = {
b9c196e1
PMJ		 70 { USB_ID(0x041e, 0x3000), 0, 1, 2, 1, 18, 0x0013 }, /* Extigy */
71 { USB_ID(0x041e, 0x3020), 2, 1, 6, 6, 18, 0x0013 }, /* Audigy 2 NX */
72 { USB_ID(0x041e, 0x3040), 2, 2, 6, 6, 2, 0x6e91 }, /* Live! 24-bit */
3195954d 73 { USB_ID(0x041e, 0x3048), 2, 2, 6, 6, 2, 0x6e91 }, /* Toshiba SB0500 */
4d1a70da
RC		 74};
75
ebfdeea3
JK		 76#define MAX_ID_ELEMS 256
77
84957a8a 78struct usb_mixer_interface {
86e07d34 79 struct snd_usb_audio *chip;
84957a8a
CL		 80 unsigned int ctrlif;
81 struct list_head list;
82 unsigned int ignore_ctl_error;
6639b6c2 83 struct urb *urb;
ebfdeea3
JK		 84 /* array[MAX_ID_ELEMS], indexed by unit id */
85 struct usb_mixer_elem_info **id_elems;
b259b10c
CL		 86
87 /* Sound Blaster remote control stuff */
4d1a70da 88 const struct rc_config *rc_cfg;
b259b10c
CL		 89 u32 rc_code;
90 wait_queue_head_t rc_waitq;
91 struct urb *rc_urb;
92 struct usb_ctrlrequest *rc_setup_packet;
93 u8 rc_buffer[6];
93446edc
CL		 94
95 u8 audigy2nx_leds[3];
468b8fde 96 u8 xonar_u1_status;
84957a8a
CL		 97};
98
99
1da177e4
LT		 100struct usb_audio_term {
101 int id;
102 int type;
103 int channels;
104 unsigned int chconfig;
105 int name;
106};
107
108struct usbmix_name_map;
109
86e07d34
TI		 110struct mixer_build {
111 struct snd_usb_audio *chip;
84957a8a 112 struct usb_mixer_interface *mixer;
1da177e4
LT		 113 unsigned char *buffer;
114 unsigned int buflen;
291186e0 115 DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS);
86e07d34 116 struct usb_audio_term oterm;
1da177e4 117 const struct usbmix_name_map *map;
8e062ec7 118 const struct usbmix_selector_map *selector_map;
1da177e4
LT		 119};
120
641b4879
TI		 121#define MAX_CHANNELS 10 /* max logical channels */
122
1da177e4 123struct usb_mixer_elem_info {
84957a8a 124 struct usb_mixer_interface *mixer;
86e07d34
TI		 125 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
126 struct snd_ctl_elem_id *elem_id;
1da177e4
LT		 127 unsigned int id;
128 unsigned int control; /* CS or ICN (high byte) */
129 unsigned int cmask; /* channel mask bitmap: 0 = master */
130 int channels;
131 int val_type;
132 int min, max, res;
c3a3e040 133 int dBmin, dBmax;
641b4879
TI		 134 int cached;
135 int cache_val[MAX_CHANNELS];
6639b6c2 136 u8 initialized;
1da177e4
LT		 137};
138
139
140enum {
141 USB_FEATURE_NONE = 0,
142 USB_FEATURE_MUTE = 1,
143 USB_FEATURE_VOLUME,
144 USB_FEATURE_BASS,
145 USB_FEATURE_MID,
146 USB_FEATURE_TREBLE,
147 USB_FEATURE_GEQ,
148 USB_FEATURE_AGC,
149 USB_FEATURE_DELAY,
150 USB_FEATURE_BASSBOOST,
151 USB_FEATURE_LOUDNESS
152};
153
154enum {
155 USB_MIXER_BOOLEAN,
156 USB_MIXER_INV_BOOLEAN,
157 USB_MIXER_S8,
158 USB_MIXER_U8,
159 USB_MIXER_S16,
160 USB_MIXER_U16,
161};
162
163enum {
164 USB_PROC_UPDOWN = 1,
165 USB_PROC_UPDOWN_SWITCH = 1,
166 USB_PROC_UPDOWN_MODE_SEL = 2,
167
168 USB_PROC_PROLOGIC = 2,
169 USB_PROC_PROLOGIC_SWITCH = 1,
170 USB_PROC_PROLOGIC_MODE_SEL = 2,
171
172 USB_PROC_3DENH = 3,
173 USB_PROC_3DENH_SWITCH = 1,
174 USB_PROC_3DENH_SPACE = 2,
175
176 USB_PROC_REVERB = 4,
177 USB_PROC_REVERB_SWITCH = 1,
178 USB_PROC_REVERB_LEVEL = 2,
179 USB_PROC_REVERB_TIME = 3,
180 USB_PROC_REVERB_DELAY = 4,
181
182 USB_PROC_CHORUS = 5,
183 USB_PROC_CHORUS_SWITCH = 1,
184 USB_PROC_CHORUS_LEVEL = 2,
185 USB_PROC_CHORUS_RATE = 3,
186 USB_PROC_CHORUS_DEPTH = 4,
187
188 USB_PROC_DCR = 6,
189 USB_PROC_DCR_SWITCH = 1,
190 USB_PROC_DCR_RATIO = 2,
191 USB_PROC_DCR_MAX_AMP = 3,
192 USB_PROC_DCR_THRESHOLD = 4,
193 USB_PROC_DCR_ATTACK = 5,
194 USB_PROC_DCR_RELEASE = 6,
195};
196
7d2b451e
SK		 197/*E-mu 0202(0404) eXtension Unit(XU) control*/
198enum {
199 USB_XU_CLOCK_RATE = 0xe301,
200 USB_XU_CLOCK_SOURCE = 0xe302,
201 USB_XU_DIGITAL_IO_STATUS = 0xe303,
202 USB_XU_DEVICE_OPTIONS = 0xe304,
203 USB_XU_DIRECT_MONITORING = 0xe305,
204 USB_XU_METERING = 0xe306
205};
206enum {
207 USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/
208 USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */
209 USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */
210 USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */
211};
1da177e4
LT		 212
213/*
214 * manual mapping of mixer names
215 * if the mixer topology is too complicated and the parsed names are
216 * ambiguous, add the entries in usbmixer_maps.c.
217 */
218#include "usbmixer_maps.c"
219
c3a3e040
JK		 220static const struct usbmix_name_map *
221find_map(struct mixer_build *state, int unitid, int control)
1da177e4 222{
c3a3e040 223 const struct usbmix_name_map *p = state->map;
1da177e4 224
c3a3e040
JK		 225 if (!p)
226 return NULL;
1da177e4
LT		 227
228 for (p = state->map; p->id; p++) {
c3a3e040
JK		 229 if (p->id == unitid &&
230 (!control || !p->control || control == p->control))
231 return p;
1da177e4 232 }
c3a3e040 233 return NULL;
1da177e4
LT		 234}
235
c3a3e040
JK		 236/* get the mapped name if the unit matches */
237static int
238check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen)
1da177e4 239{
c3a3e040
JK		 240 if (!p || !p->name)
241 return 0;
1da177e4 242
c3a3e040
JK		 243 buflen--;
244 return strlcpy(buf, p->name, buflen);
245}
246
247/* check whether the control should be ignored */
248static inline int
249check_ignored_ctl(const struct usbmix_name_map *p)
250{
251 if (!p || p->name || p->dB)
1da177e4 252 return 0;
c3a3e040
JK		 253 return 1;
254}
255
256/* dB mapping */
257static inline void check_mapped_dB(const struct usbmix_name_map *p,
258 struct usb_mixer_elem_info *cval)
259{
260 if (p && p->dB) {
261 cval->dBmin = p->dB->min;
262 cval->dBmax = p->dB->max;
1da177e4 263 }
1da177e4
LT		 264}
265
8e062ec7 266/* get the mapped selector source name */
86e07d34 267static int check_mapped_selector_name(struct mixer_build *state, int unitid,
8e062ec7
CL		 268 int index, char *buf, int buflen)
269{
270 const struct usbmix_selector_map *p;
271
272 if (! state->selector_map)
273 return 0;
274 for (p = state->selector_map; p->id; p++) {
275 if (p->id == unitid && index < p->count)
276 return strlcpy(buf, p->names[index], buflen);
277 }
278 return 0;
279}
280
1da177e4
LT		 281/*
282 * find an audio control unit with the given unit id
283 */
86e07d34 284static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
1da177e4
LT		 285{
286 unsigned char *p;
287
288 p = NULL;
289 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
290 USB_DT_CS_INTERFACE)) != NULL) {
de48c7bc 291 if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC_EXTENSION_UNIT_V1 && p[3] == unit)
1da177e4
LT		 292 return p;
293 }
294 return NULL;
295}
296
297
298/*
299 * copy a string with the given id
300 */
86e07d34 301static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
1da177e4
LT		 302{
303 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
304 buf[len] = 0;
305 return len;
306}
307
308/*
309 * convert from the byte/word on usb descriptor to the zero-based integer
310 */
86e07d34 311static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 312{
313 switch (cval->val_type) {
314 case USB_MIXER_BOOLEAN:
315 return !!val;
316 case USB_MIXER_INV_BOOLEAN:
317 return !val;
318 case USB_MIXER_U8:
319 val &= 0xff;
320 break;
321 case USB_MIXER_S8:
322 val &= 0xff;
323 if (val >= 0x80)
324 val -= 0x100;
325 break;
326 case USB_MIXER_U16:
327 val &= 0xffff;
328 break;
329 case USB_MIXER_S16:
330 val &= 0xffff;
331 if (val >= 0x8000)
332 val -= 0x10000;
333 break;
334 }
335 return val;
336}
337
338/*
339 * convert from the zero-based int to the byte/word for usb descriptor
340 */
86e07d34 341static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 342{
343 switch (cval->val_type) {
344 case USB_MIXER_BOOLEAN:
345 return !!val;
346 case USB_MIXER_INV_BOOLEAN:
347 return !val;
348 case USB_MIXER_S8:
349 case USB_MIXER_U8:
350 return val & 0xff;
351 case USB_MIXER_S16:
352 case USB_MIXER_U16:
353 return val & 0xffff;
354 }
355 return 0; /* not reached */
356}
357
86e07d34 358static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 359{
360 if (! cval->res)
361 cval->res = 1;
362 if (val < cval->min)
363 return 0;
14790f1c
TI		 364 else if (val >= cval->max)
365 return (cval->max - cval->min + cval->res - 1) / cval->res;
1da177e4
LT		 366 else
367 return (val - cval->min) / cval->res;
368}
369
86e07d34 370static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 371{
372 if (val < 0)
373 return cval->min;
374 if (! cval->res)
375 cval->res = 1;
376 val *= cval->res;
377 val += cval->min;
378 if (val > cval->max)
379 return cval->max;
380 return val;
381}
382
383
384/*
385 * retrieve a mixer value
386 */
387
86e07d34 388static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
1da177e4
LT		 389{
390 unsigned char buf[2];
391 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
392 int timeout = 10;
393
394 while (timeout-- > 0) {
84957a8a
CL		 395 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
396 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 397 request,
398 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
84957a8a 399 validx, cval->mixer->ctrlif | (cval->id << 8),
a04395ea 400 buf, val_len, 100) >= val_len) {
1da177e4
LT		 401 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
402 return 0;
403 }
404 }
84957a8a
CL		 405 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
406 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
1da177e4
LT		 407 return -EINVAL;
408}
409
86e07d34 410static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
1da177e4 411{
de48c7bc 412 return get_ctl_value(cval, UAC_GET_CUR, validx, value);
1da177e4
LT		 413}
414
415/* channel = 0: master, 1 = first channel */
641b4879
TI		 416static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
417 int channel, int *value)
1da177e4 418{
de48c7bc 419 return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value);
1da177e4
LT		 420}
421
641b4879
TI		 422static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
423 int channel, int index, int *value)
424{
425 int err;
426
427 if (cval->cached & (1 << channel)) {
428 *value = cval->cache_val[index];
429 return 0;
430 }
431 err = get_cur_mix_raw(cval, channel, value);
432 if (err < 0) {
433 if (!cval->mixer->ignore_ctl_error)
434 snd_printd(KERN_ERR "cannot get current value for "
435 "control %d ch %d: err = %d\n",
436 cval->control, channel, err);
437 return err;
438 }
439 cval->cached |= 1 << channel;
440 cval->cache_val[index] = *value;
441 return 0;
442}
443
444
1da177e4
LT		 445/*
446 * set a mixer value
447 */
448
86e07d34 449static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
1da177e4
LT		 450{
451 unsigned char buf[2];
452 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
453 int timeout = 10;
454
455 value_set = convert_bytes_value(cval, value_set);
456 buf[0] = value_set & 0xff;
457 buf[1] = (value_set >> 8) & 0xff;
cf3f9130 458 while (timeout-- > 0)
84957a8a
CL		 459 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
460 usb_sndctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 461 request,
462 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
84957a8a 463 validx, cval->mixer->ctrlif | (cval->id << 8),
1da177e4
LT		 464 buf, val_len, 100) >= 0)
465 return 0;
84957a8a
CL		 466 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
467 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
1da177e4
LT		 468 return -EINVAL;
469}
470
86e07d34 471static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
1da177e4 472{
de48c7bc 473 return set_ctl_value(cval, UAC_SET_CUR, validx, value);
1da177e4
LT		 474}
475
641b4879
TI		 476static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
477 int index, int value)
1da177e4 478{
641b4879 479 int err;
de48c7bc 480 err = set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel,
641b4879
TI		 481 value);
482 if (err < 0)
483 return err;
484 cval->cached |= 1 << channel;
485 cval->cache_val[index] = value;
486 return 0;
1da177e4
LT		 487}
488
7bc5ba7e
TI		 489/*
490 * TLV callback for mixer volume controls
491 */
492static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
493 unsigned int size, unsigned int __user *_tlv)
494{
495 struct usb_mixer_elem_info *cval = kcontrol->private_data;
b8e1c73f 496 DECLARE_TLV_DB_MINMAX(scale, 0, 0);
7bc5ba7e
TI		 497
498 if (size < sizeof(scale))
499 return -ENOMEM;
c3a3e040
JK		 500 scale[2] = cval->dBmin;
501 scale[3] = cval->dBmax;
7bc5ba7e
TI		 502 if (copy_to_user(_tlv, scale, sizeof(scale)))
503 return -EFAULT;
504 return 0;
505}
1da177e4
LT		 506
507/*
508 * parser routines begin here...
509 */
510
86e07d34 511static int parse_audio_unit(struct mixer_build *state, int unitid);
1da177e4
LT		 512
513
514/*
515 * check if the input/output channel routing is enabled on the given bitmap.
516 * used for mixer unit parser
517 */
518static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
519{
520 int idx = ich * num_outs + och;
521 return bmap[idx >> 3] & (0x80 >> (idx & 7));
522}
523
524
525/*
526 * add an alsa control element
527 * search and increment the index until an empty slot is found.
528 *
529 * if failed, give up and free the control instance.
530 */
531
86e07d34 532static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl)
1da177e4 533{
86e07d34 534 struct usb_mixer_elem_info *cval = kctl->private_data;
1da177e4 535 int err;
84957a8a
CL		 536
537 while (snd_ctl_find_id(state->chip->card, &kctl->id))
1da177e4 538 kctl->id.index++;
84957a8a 539 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
1da177e4 540 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
6639b6c2 541 return err;
1da177e4 542 }
6639b6c2
CL		 543 cval->elem_id = &kctl->id;
544 cval->next_id_elem = state->mixer->id_elems[cval->id];
545 state->mixer->id_elems[cval->id] = cval;
546 return 0;
1da177e4
LT		 547}
548
549
550/*
551 * get a terminal name string
552 */
553
554static struct iterm_name_combo {
555 int type;
556 char *name;
557} iterm_names[] = {
558 { 0x0300, "Output" },
559 { 0x0301, "Speaker" },
560 { 0x0302, "Headphone" },
561 { 0x0303, "HMD Audio" },
562 { 0x0304, "Desktop Speaker" },
563 { 0x0305, "Room Speaker" },
564 { 0x0306, "Com Speaker" },
565 { 0x0307, "LFE" },
566 { 0x0600, "External In" },
567 { 0x0601, "Analog In" },
568 { 0x0602, "Digital In" },
569 { 0x0603, "Line" },
570 { 0x0604, "Legacy In" },
571 { 0x0605, "IEC958 In" },
572 { 0x0606, "1394 DA Stream" },
573 { 0x0607, "1394 DV Stream" },
574 { 0x0700, "Embedded" },
575 { 0x0701, "Noise Source" },
576 { 0x0702, "Equalization Noise" },
577 { 0x0703, "CD" },
578 { 0x0704, "DAT" },
579 { 0x0705, "DCC" },
580 { 0x0706, "MiniDisk" },
581 { 0x0707, "Analog Tape" },
582 { 0x0708, "Phonograph" },
583 { 0x0709, "VCR Audio" },
584 { 0x070a, "Video Disk Audio" },
585 { 0x070b, "DVD Audio" },
586 { 0x070c, "TV Tuner Audio" },
587 { 0x070d, "Satellite Rec Audio" },
588 { 0x070e, "Cable Tuner Audio" },
589 { 0x070f, "DSS Audio" },
590 { 0x0710, "Radio Receiver" },
591 { 0x0711, "Radio Transmitter" },
592 { 0x0712, "Multi-Track Recorder" },
593 { 0x0713, "Synthesizer" },
594 { 0 },
595};
596
86e07d34 597static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
1da177e4
LT		 598 unsigned char *name, int maxlen, int term_only)
599{
600 struct iterm_name_combo *names;
601
602 if (iterm->name)
603 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
604
605 /* virtual type - not a real terminal */
606 if (iterm->type >> 16) {
607 if (term_only)
608 return 0;
609 switch (iterm->type >> 16) {
de48c7bc 610 case UAC_SELECTOR_UNIT:
1da177e4 611 strcpy(name, "Selector"); return 8;
de48c7bc 612 case UAC_PROCESSING_UNIT_V1:
1da177e4 613 strcpy(name, "Process Unit"); return 12;
de48c7bc 614 case UAC_EXTENSION_UNIT_V1:
1da177e4 615 strcpy(name, "Ext Unit"); return 8;
de48c7bc 616 case UAC_MIXER_UNIT:
1da177e4
LT		 617 strcpy(name, "Mixer"); return 5;
618 default:
619 return sprintf(name, "Unit %d", iterm->id);
620 }
621 }
622
623 switch (iterm->type & 0xff00) {
624 case 0x0100:
625 strcpy(name, "PCM"); return 3;
626 case 0x0200:
627 strcpy(name, "Mic"); return 3;
628 case 0x0400:
629 strcpy(name, "Headset"); return 7;
630 case 0x0500:
631 strcpy(name, "Phone"); return 5;
632 }
633
634 for (names = iterm_names; names->type; names++)
635 if (names->type == iterm->type) {
636 strcpy(name, names->name);
637 return strlen(names->name);
638 }
639 return 0;
640}
641
642
643/*
644 * parse the source unit recursively until it reaches to a terminal
645 * or a branched unit.
646 */
86e07d34 647static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
1da177e4
LT		 648{
649 unsigned char *p1;
650
651 memset(term, 0, sizeof(*term));
652 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
653 term->id = id;
654 switch (p1[2]) {
de48c7bc 655 case UAC_INPUT_TERMINAL:
1da177e4
LT		 656 term->type = combine_word(p1 + 4);
657 term->channels = p1[7];
658 term->chconfig = combine_word(p1 + 8);
659 term->name = p1[11];
660 return 0;
de48c7bc 661 case UAC_FEATURE_UNIT:
1da177e4
LT		 662 id = p1[4];
663 break; /* continue to parse */
de48c7bc 664 case UAC_MIXER_UNIT:
1da177e4
LT		 665 term->type = p1[2] << 16; /* virtual type */
666 term->channels = p1[5 + p1[4]];
667 term->chconfig = combine_word(p1 + 6 + p1[4]);
668 term->name = p1[p1[0] - 1];
669 return 0;
de48c7bc 670 case UAC_SELECTOR_UNIT:
1da177e4
LT		 671 /* call recursively to retrieve the channel info */
672 if (check_input_term(state, p1[5], term) < 0)
673 return -ENODEV;
674 term->type = p1[2] << 16; /* virtual type */
675 term->id = id;
676 term->name = p1[9 + p1[0] - 1];
677 return 0;
de48c7bc
DM		 678 case UAC_PROCESSING_UNIT_V1:
679 case UAC_EXTENSION_UNIT_V1:
1da177e4
LT		 680 if (p1[6] == 1) {
681 id = p1[7];
682 break; /* continue to parse */
683 }
684 term->type = p1[2] << 16; /* virtual type */
685 term->channels = p1[7 + p1[6]];
686 term->chconfig = combine_word(p1 + 8 + p1[6]);
687 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
688 return 0;
689 default:
690 return -ENODEV;
691 }
692 }
693 return -ENODEV;
694}
695
696
697/*
698 * Feature Unit
699 */
700
701/* feature unit control information */
702struct usb_feature_control_info {
703 const char *name;
704 unsigned int type; /* control type (mute, volume, etc.) */
705};
706
707static struct usb_feature_control_info audio_feature_info[] = {
708 { "Mute", USB_MIXER_INV_BOOLEAN },
709 { "Volume", USB_MIXER_S16 },
710 { "Tone Control - Bass", USB_MIXER_S8 },
711 { "Tone Control - Mid", USB_MIXER_S8 },
712 { "Tone Control - Treble", USB_MIXER_S8 },
713 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
714 { "Auto Gain Control", USB_MIXER_BOOLEAN },
715 { "Delay Control", USB_MIXER_U16 },
716 { "Bass Boost", USB_MIXER_BOOLEAN },
717 { "Loudness", USB_MIXER_BOOLEAN },
718};
719
720
721/* private_free callback */
86e07d34 722static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
1da177e4 723{
4d572776
JJ		 724 kfree(kctl->private_data);
725 kctl->private_data = NULL;
1da177e4
LT		 726}
727
728
729/*
730 * interface to ALSA control for feature/mixer units
731 */
732
733/*
734 * retrieve the minimum and maximum values for the specified control
735 */
86e07d34 736static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
1da177e4
LT		 737{
738 /* for failsafe */
739 cval->min = default_min;
740 cval->max = cval->min + 1;
741 cval->res = 1;
c3a3e040 742 cval->dBmin = cval->dBmax = 0;
1da177e4
LT		 743
744 if (cval->val_type == USB_MIXER_BOOLEAN ||
745 cval->val_type == USB_MIXER_INV_BOOLEAN) {
746 cval->initialized = 1;
747 } else {
748 int minchn = 0;
749 if (cval->cmask) {
750 int i;
751 for (i = 0; i < MAX_CHANNELS; i++)
752 if (cval->cmask & (1 << i)) {
753 minchn = i + 1;
754 break;
755 }
756 }
de48c7bc
DM		 757 if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
758 get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
84957a8a
CL		 759 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
760 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
1da177e4
LT		 761 return -EINVAL;
762 }
de48c7bc 763 if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
1da177e4
LT		 764 cval->res = 1;
765 } else {
766 int last_valid_res = cval->res;
767
768 while (cval->res > 1) {
de48c7bc 769 if (set_ctl_value(cval, UAC_SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
1da177e4
LT		 770 break;
771 cval->res /= 2;
772 }
de48c7bc 773 if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
1da177e4
LT		 774 cval->res = last_valid_res;
775 }
776 if (cval->res == 0)
777 cval->res = 1;
14790f1c
TI		 778
779 /* Additional checks for the proper resolution
780 *
781 * Some devices report smaller resolutions than actually
782 * reacting. They don't return errors but simply clip
783 * to the lower aligned value.
784 */
785 if (cval->min + cval->res < cval->max) {
786 int last_valid_res = cval->res;
787 int saved, test, check;
641b4879 788 get_cur_mix_raw(cval, minchn, &saved);
14790f1c
TI		 789 for (;;) {
790 test = saved;
791 if (test < cval->max)
792 test += cval->res;
793 else
794 test -= cval->res;
795 if (test < cval->min || test > cval->max ||
641b4879
TI		 796 set_cur_mix_value(cval, minchn, 0, test) ||
797 get_cur_mix_raw(cval, minchn, &check)) {
14790f1c
TI		 798 cval->res = last_valid_res;
799 break;
800 }
801 if (test == check)
802 break;
803 cval->res *= 2;
804 }
641b4879 805 set_cur_mix_value(cval, minchn, 0, saved);
14790f1c
TI		 806 }
807
1da177e4
LT		 808 cval->initialized = 1;
809 }
c3a3e040
JK		 810
811 /* USB descriptions contain the dB scale in 1/256 dB unit
812 * while ALSA TLV contains in 1/100 dB unit
813 */
814 cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256;
815 cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256;
816 if (cval->dBmin > cval->dBmax) {
817 /* something is wrong; assume it's either from/to 0dB */
818 if (cval->dBmin < 0)
819 cval->dBmax = 0;
820 else if (cval->dBmin > 0)
821 cval->dBmin = 0;
822 if (cval->dBmin > cval->dBmax) {
823 /* totally crap, return an error */
824 return -EINVAL;
825 }
826 }
827
1da177e4
LT		 828 return 0;
829}
830
831
832/* get a feature/mixer unit info */
86e07d34 833static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4 834{
86e07d34 835 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 836
837 if (cval->val_type == USB_MIXER_BOOLEAN ||
838 cval->val_type == USB_MIXER_INV_BOOLEAN)
839 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
840 else
841 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
842 uinfo->count = cval->channels;
843 if (cval->val_type == USB_MIXER_BOOLEAN ||
844 cval->val_type == USB_MIXER_INV_BOOLEAN) {
845 uinfo->value.integer.min = 0;
846 uinfo->value.integer.max = 1;
847 } else {
848 if (! cval->initialized)
849 get_min_max(cval, 0);
850 uinfo->value.integer.min = 0;
14790f1c
TI		 851 uinfo->value.integer.max =
852 (cval->max - cval->min + cval->res - 1) / cval->res;
1da177e4
LT		 853 }
854 return 0;
855}
856
857/* get the current value from feature/mixer unit */
86e07d34 858static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 859{
86e07d34 860 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 861 int c, cnt, val, err;
862
641b4879 863 ucontrol->value.integer.value[0] = cval->min;
1da177e4
LT		 864 if (cval->cmask) {
865 cnt = 0;
866 for (c = 0; c < MAX_CHANNELS; c++) {
641b4879
TI		 867 if (!(cval->cmask & (1 << c)))
868 continue;
869 err = get_cur_mix_value(cval, c + 1, cnt, &val);
870 if (err < 0)
871 return cval->mixer->ignore_ctl_error ? 0 : err;
872 val = get_relative_value(cval, val);
873 ucontrol->value.integer.value[cnt] = val;
874 cnt++;
1da177e4 875 }
641b4879 876 return 0;
1da177e4
LT		 877 } else {
878 /* master channel */
641b4879
TI		 879 err = get_cur_mix_value(cval, 0, 0, &val);
880 if (err < 0)
881 return cval->mixer->ignore_ctl_error ? 0 : err;
1da177e4
LT		 882 val = get_relative_value(cval, val);
883 ucontrol->value.integer.value[0] = val;
884 }
885 return 0;
886}
887
888/* put the current value to feature/mixer unit */
86e07d34 889static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 890{
86e07d34 891 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 892 int c, cnt, val, oval, err;
893 int changed = 0;
894
895 if (cval->cmask) {
896 cnt = 0;
897 for (c = 0; c < MAX_CHANNELS; c++) {
641b4879
TI		 898 if (!(cval->cmask & (1 << c)))
899 continue;
900 err = get_cur_mix_value(cval, c + 1, cnt, &oval);
901 if (err < 0)
902 return cval->mixer->ignore_ctl_error ? 0 : err;
903 val = ucontrol->value.integer.value[cnt];
904 val = get_abs_value(cval, val);
905 if (oval != val) {
906 set_cur_mix_value(cval, c + 1, cnt, val);
907 changed = 1;
1da177e4 908 }
641b4879 909 cnt++;
1da177e4
LT		 910 }
911 } else {
912 /* master channel */
641b4879 913 err = get_cur_mix_value(cval, 0, 0, &oval);
1da177e4 914 if (err < 0)
641b4879 915 return cval->mixer->ignore_ctl_error ? 0 : err;
1da177e4
LT		 916 val = ucontrol->value.integer.value[0];
917 val = get_abs_value(cval, val);
918 if (val != oval) {
641b4879 919 set_cur_mix_value(cval, 0, 0, val);
1da177e4
LT		 920 changed = 1;
921 }
922 }
923 return changed;
924}
925
86e07d34 926static struct snd_kcontrol_new usb_feature_unit_ctl = {
1da177e4
LT		 927 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
928 .name = "", /* will be filled later manually */
929 .info = mixer_ctl_feature_info,
930 .get = mixer_ctl_feature_get,
931 .put = mixer_ctl_feature_put,
932};
933
934
935/*
936 * build a feature control
937 */
938
08d1e635
TI		 939static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
940{
941 return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
942}
943
86e07d34 944static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
1da177e4 945 unsigned int ctl_mask, int control,
86e07d34 946 struct usb_audio_term *iterm, int unitid)
1da177e4
LT		 947{
948 unsigned int len = 0;
949 int mapped_name = 0;
950 int nameid = desc[desc[0] - 1];
86e07d34
TI		 951 struct snd_kcontrol *kctl;
952 struct usb_mixer_elem_info *cval;
c3a3e040 953 const struct usbmix_name_map *map;
1da177e4
LT		 954
955 control++; /* change from zero-based to 1-based value */
956
957 if (control == USB_FEATURE_GEQ) {
958 /* FIXME: not supported yet */
959 return;
960 }
961
c3a3e040
JK		 962 map = find_map(state, unitid, control);
963 if (check_ignored_ctl(map))
1da177e4
LT		 964 return;
965
561b220a 966 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 967 if (! cval) {
968 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
969 return;
970 }
84957a8a 971 cval->mixer = state->mixer;
1da177e4
LT		 972 cval->id = unitid;
973 cval->control = control;
974 cval->cmask = ctl_mask;
975 cval->val_type = audio_feature_info[control-1].type;
976 if (ctl_mask == 0)
977 cval->channels = 1; /* master channel */
978 else {
979 int i, c = 0;
980 for (i = 0; i < 16; i++)
981 if (ctl_mask & (1 << i))
982 c++;
983 cval->channels = c;
984 }
985
986 /* get min/max values */
987 get_min_max(cval, 0);
988
989 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
990 if (! kctl) {
991 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
992 kfree(cval);
993 return;
994 }
995 kctl->private_free = usb_mixer_elem_free;
996
c3a3e040 997 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1da177e4
LT		 998 mapped_name = len != 0;
999 if (! len && nameid)
c3a3e040
JK		 1000 len = snd_usb_copy_string_desc(state, nameid,
1001 kctl->id.name, sizeof(kctl->id.name));
1da177e4
LT		 1002
1003 switch (control) {
1004 case USB_FEATURE_MUTE:
1005 case USB_FEATURE_VOLUME:
1006 /* determine the control name. the rule is:
1007 * - if a name id is given in descriptor, use it.
1008 * - if the connected input can be determined, then use the name
1009 * of terminal type.
1010 * - if the connected output can be determined, use it.
1011 * - otherwise, anonymous name.
1012 */
1013 if (! len) {
1014 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
1015 if (! len)
1016 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
1017 if (! len)
1018 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
1019 "Feature %d", unitid);
1020 }
1021 /* determine the stream direction:
1022 * if the connected output is USB stream, then it's likely a
1023 * capture stream. otherwise it should be playback (hopefully :)
1024 */
1025 if (! mapped_name && ! (state->oterm.type >> 16)) {
1026 if ((state->oterm.type & 0xff00) == 0x0100) {
08d1e635 1027 len = append_ctl_name(kctl, " Capture");
1da177e4 1028 } else {
08d1e635 1029 len = append_ctl_name(kctl, " Playback");
1da177e4
LT		 1030 }
1031 }
08d1e635
TI		 1032 append_ctl_name(kctl, control == USB_FEATURE_MUTE ?
1033 " Switch" : " Volume");
7bc5ba7e
TI		 1034 if (control == USB_FEATURE_VOLUME) {
1035 kctl->tlv.c = mixer_vol_tlv;
1036 kctl->vd[0].access |=
1037 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1038 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
c3a3e040 1039 check_mapped_dB(map, cval);
7bc5ba7e 1040 }
1da177e4
LT		 1041 break;
1042
1043 default:
1044 if (! len)
1045 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
1046 sizeof(kctl->id.name));
1047 break;
1048 }
1049
2cf313ee 1050 /* volume control quirks */
27d10f56
CL		 1051 switch (state->chip->usb_id) {
1052 case USB_ID(0x0471, 0x0101):
1053 case USB_ID(0x0471, 0x0104):
1054 case USB_ID(0x0471, 0x0105):
1055 case USB_ID(0x0672, 0x1041):
2cf313ee
AF		 1056 /* quirk for UDA1321/N101.
1057 * note that detection between firmware 2.1.1.7 (N101)
1058 * and later 2.1.1.21 is not very clear from datasheets.
1059 * I hope that the min value is -15360 for newer firmware --jk
1060 */
27d10f56
CL		 1061 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
1062 cval->min == -15616) {
2cf313ee
AF		 1063 snd_printk(KERN_INFO
1064 "set volume quirk for UDA1321/N101 chip\n");
27d10f56
CL		 1065 cval->max = -256;
1066 }
2cf313ee
AF		 1067 break;
1068
1069 case USB_ID(0x046d, 0x09a4):
1070 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
1071 snd_printk(KERN_INFO
1072 "set volume quirk for QuickCam E3500\n");
1073 cval->min = 6080;
1074 cval->max = 8768;
1075 cval->res = 192;
1076 }
1077 break;
1078
1da177e4
LT		 1079 }
1080
1081 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1082 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
84957a8a 1083 add_control_to_empty(state, kctl);
1da177e4
LT		 1084}
1085
1086
1087
1088/*
1089 * parse a feature unit
1090 *
1091 * most of controlls are defined here.
1092 */
28e1b773 1093static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr)
1da177e4
LT		 1094{
1095 int channels, i, j;
86e07d34 1096 struct usb_audio_term iterm;
1da177e4
LT		 1097 unsigned int master_bits, first_ch_bits;
1098 int err, csize;
28e1b773 1099 struct uac_feature_unit_descriptor *ftr = _ftr;
1da177e4 1100
28e1b773 1101 if (ftr->bLength < 7 || ! (csize = ftr->bControlSize) || ftr->bLength < 7 + csize) {
de48c7bc 1102 snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid);
1da177e4
LT		 1103 return -EINVAL;
1104 }
1105
1106 /* parse the source unit */
28e1b773 1107 if ((err = parse_audio_unit(state, ftr->bSourceID)) < 0)
1da177e4
LT		 1108 return err;
1109
1110 /* determine the input source type and name */
28e1b773 1111 if (check_input_term(state, ftr->bSourceID, &iterm) < 0)
1da177e4
LT		 1112 return -EINVAL;
1113
28e1b773 1114 channels = (ftr->bLength - 7) / csize - 1;
1da177e4 1115
28e1b773 1116 master_bits = snd_usb_combine_bytes(ftr->controls, csize);
0c3cee57
JK		 1117 /* master configuration quirks */
1118 switch (state->chip->usb_id) {
1119 case USB_ID(0x08bb, 0x2702):
1120 snd_printk(KERN_INFO
1121 "usbmixer: master volume quirk for PCM2702 chip\n");
1122 /* disable non-functional volume control */
1123 master_bits &= ~(1 << (USB_FEATURE_VOLUME - 1));
1124 break;
1125 }
1da177e4 1126 if (channels > 0)
28e1b773 1127 first_ch_bits = snd_usb_combine_bytes(ftr->controls + csize, csize);
1da177e4
LT		 1128 else
1129 first_ch_bits = 0;
1130 /* check all control types */
1131 for (i = 0; i < 10; i++) {
1132 unsigned int ch_bits = 0;
1133 for (j = 0; j < channels; j++) {
28e1b773 1134 unsigned int mask = snd_usb_combine_bytes(ftr->controls + csize * (j+1), csize);
1da177e4
LT		 1135 if (mask & (1 << i))
1136 ch_bits |= (1 << j);
1137 }
1138 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
28e1b773 1139 build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid);
1da177e4 1140 if (master_bits & (1 << i))
28e1b773 1141 build_feature_ctl(state, _ftr, 0, i, &iterm, unitid);
1da177e4
LT		 1142 }
1143
1144 return 0;
1145}
1146
1147
1148/*
1149 * Mixer Unit
1150 */
1151
1152/*
1153 * build a mixer unit control
1154 *
1155 * the callbacks are identical with feature unit.
1156 * input channel number (zero based) is given in control field instead.
1157 */
1158
86e07d34 1159static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
1da177e4 1160 int in_pin, int in_ch, int unitid,
86e07d34 1161 struct usb_audio_term *iterm)
1da177e4 1162{
86e07d34 1163 struct usb_mixer_elem_info *cval;
1da177e4
LT		 1164 unsigned int input_pins = desc[4];
1165 unsigned int num_outs = desc[5 + input_pins];
1166 unsigned int i, len;
86e07d34 1167 struct snd_kcontrol *kctl;
c3a3e040 1168 const struct usbmix_name_map *map;
1da177e4 1169
c3a3e040
JK		 1170 map = find_map(state, unitid, 0);
1171 if (check_ignored_ctl(map))
1da177e4
LT		 1172 return;
1173
561b220a 1174 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 1175 if (! cval)
1176 return;
1177
84957a8a 1178 cval->mixer = state->mixer;
1da177e4
LT		 1179 cval->id = unitid;
1180 cval->control = in_ch + 1; /* based on 1 */
1181 cval->val_type = USB_MIXER_S16;
1182 for (i = 0; i < num_outs; i++) {
1183 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1184 cval->cmask |= (1 << i);
1185 cval->channels++;
1186 }
1187 }
1188
1189 /* get min/max values */
1190 get_min_max(cval, 0);
1191
1192 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1193 if (! kctl) {
1194 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1195 kfree(cval);
1196 return;
1197 }
1198 kctl->private_free = usb_mixer_elem_free;
1199
c3a3e040 1200 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1da177e4
LT		 1201 if (! len)
1202 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1203 if (! len)
1204 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
08d1e635 1205 append_ctl_name(kctl, " Volume");
1da177e4
LT		 1206
1207 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1208 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1209 add_control_to_empty(state, kctl);
1da177e4
LT		 1210}
1211
1212
1213/*
1214 * parse a mixer unit
1215 */
86e07d34 1216static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4 1217{
86e07d34 1218 struct usb_audio_term iterm;
1da177e4
LT		 1219 int input_pins, num_ins, num_outs;
1220 int pin, ich, err;
1221
1222 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1223 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1224 return -EINVAL;
1225 }
1226 /* no bmControls field (e.g. Maya44) -> ignore */
1227 if (desc[0] <= 10 + input_pins) {
1228 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1229 return 0;
1230 }
1231
1232 num_ins = 0;
1233 ich = 0;
1234 for (pin = 0; pin < input_pins; pin++) {
1235 err = parse_audio_unit(state, desc[5 + pin]);
1236 if (err < 0)
1237 return err;
1238 err = check_input_term(state, desc[5 + pin], &iterm);
1239 if (err < 0)
1240 return err;
1241 num_ins += iterm.channels;
1242 for (; ich < num_ins; ++ich) {
1243 int och, ich_has_controls = 0;
1244
1245 for (och = 0; och < num_outs; ++och) {
1246 if (check_matrix_bitmap(desc + 9 + input_pins,
1247 ich, och, num_outs)) {
1248 ich_has_controls = 1;
1249 break;
1250 }
1251 }
1252 if (ich_has_controls)
1253 build_mixer_unit_ctl(state, desc, pin, ich,
1254 unitid, &iterm);
1255 }
1256 }
1257 return 0;
1258}
1259
1260
1261/*
1262 * Processing Unit / Extension Unit
1263 */
1264
1265/* get callback for processing/extension unit */
86e07d34 1266static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1267{
86e07d34 1268 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1269 int err, val;
1270
1271 err = get_cur_ctl_value(cval, cval->control << 8, &val);
84957a8a 1272 if (err < 0 && cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1273 ucontrol->value.integer.value[0] = cval->min;
1274 return 0;
1275 }
1276 if (err < 0)
1277 return err;
1278 val = get_relative_value(cval, val);
1279 ucontrol->value.integer.value[0] = val;
1280 return 0;
1281}
1282
1283/* put callback for processing/extension unit */
86e07d34 1284static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1285{
86e07d34 1286 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1287 int val, oval, err;
1288
1289 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1290 if (err < 0) {
84957a8a 1291 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1292 return 0;
1293 return err;
1294 }
1295 val = ucontrol->value.integer.value[0];
1296 val = get_abs_value(cval, val);
1297 if (val != oval) {
1298 set_cur_ctl_value(cval, cval->control << 8, val);
1299 return 1;
1300 }
1301 return 0;
1302}
1303
1304/* alsa control interface for processing/extension unit */
86e07d34 1305static struct snd_kcontrol_new mixer_procunit_ctl = {
1da177e4
LT		 1306 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1307 .name = "", /* will be filled later */
1308 .info = mixer_ctl_feature_info,
1309 .get = mixer_ctl_procunit_get,
1310 .put = mixer_ctl_procunit_put,
1311};
1312
1313
1314/*
1315 * predefined data for processing units
1316 */
1317struct procunit_value_info {
1318 int control;
1319 char *suffix;
1320 int val_type;
1321 int min_value;
1322};
1323
1324struct procunit_info {
1325 int type;
1326 char *name;
1327 struct procunit_value_info *values;
1328};
1329
1330static struct procunit_value_info updown_proc_info[] = {
1331 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1332 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1333 { 0 }
1334};
1335static struct procunit_value_info prologic_proc_info[] = {
1336 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1337 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1338 { 0 }
1339};
1340static struct procunit_value_info threed_enh_proc_info[] = {
1341 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1342 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1343 { 0 }
1344};
1345static struct procunit_value_info reverb_proc_info[] = {
1346 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1347 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1348 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1349 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1350 { 0 }
1351};
1352static struct procunit_value_info chorus_proc_info[] = {
1353 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1354 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1355 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1356 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1357 { 0 }
1358};
1359static struct procunit_value_info dcr_proc_info[] = {
1360 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1361 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1362 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1363 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1364 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1365 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1366 { 0 }
1367};
1368
1369static struct procunit_info procunits[] = {
1370 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1371 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1372 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1373 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1374 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1375 { USB_PROC_DCR, "DCR", dcr_proc_info },
1376 { 0 },
1377};
7d2b451e
SK		 1378/*
1379 * predefined data for extension units
1380 */
1381static struct procunit_value_info clock_rate_xu_info[] = {
1382 { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 },
1383 { 0 }
1384};
1385static struct procunit_value_info clock_source_xu_info[] = {
1386 { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN },
1387 { 0 }
1388};
1389static struct procunit_value_info spdif_format_xu_info[] = {
1390 { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN },
1391 { 0 }
1392};
1393static struct procunit_value_info soft_limit_xu_info[] = {
1394 { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN },
1395 { 0 }
1396};
1397static struct procunit_info extunits[] = {
1398 { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info },
1399 { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info },
1400 { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info },
1401 { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
1402 { 0 }
1403};
1da177e4
LT		 1404/*
1405 * build a processing/extension unit
1406 */
86e07d34 1407static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1da177e4
LT		 1408{
1409 int num_ins = dsc[6];
86e07d34
TI		 1410 struct usb_mixer_elem_info *cval;
1411 struct snd_kcontrol *kctl;
1da177e4
LT		 1412 int i, err, nameid, type, len;
1413 struct procunit_info *info;
1414 struct procunit_value_info *valinfo;
c3a3e040 1415 const struct usbmix_name_map *map;
1da177e4
LT		 1416 static struct procunit_value_info default_value_info[] = {
1417 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1418 { 0 }
1419 };
1420 static struct procunit_info default_info = {
1421 0, NULL, default_value_info
1422 };
1423
1424 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1425 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1426 return -EINVAL;
1427 }
1428
1429 for (i = 0; i < num_ins; i++) {
1430 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1431 return err;
1432 }
1433
1434 type = combine_word(&dsc[4]);
1da177e4
LT		 1435 for (info = list; info && info->type; info++)
1436 if (info->type == type)
1437 break;
1438 if (! info || ! info->type)
1439 info = &default_info;
1440
1441 for (valinfo = info->values; valinfo->control; valinfo++) {
1442 /* FIXME: bitmap might be longer than 8bit */
1443 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1444 continue;
c3a3e040
JK		 1445 map = find_map(state, unitid, valinfo->control);
1446 if (check_ignored_ctl(map))
1da177e4 1447 continue;
561b220a 1448 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 1449 if (! cval) {
1450 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1451 return -ENOMEM;
1452 }
84957a8a 1453 cval->mixer = state->mixer;
1da177e4
LT		 1454 cval->id = unitid;
1455 cval->control = valinfo->control;
1456 cval->val_type = valinfo->val_type;
1457 cval->channels = 1;
1458
1459 /* get min/max values */
1460 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1461 /* FIXME: hard-coded */
1462 cval->min = 1;
1463 cval->max = dsc[15];
1464 cval->res = 1;
1465 cval->initialized = 1;
7d2b451e
SK		 1466 } else {
1467 if (type == USB_XU_CLOCK_RATE) {
1468 /* E-Mu USB 0404/0202/TrackerPre
1469 * samplerate control quirk
1470 */
1471 cval->min = 0;
1472 cval->max = 5;
1473 cval->res = 1;
1474 cval->initialized = 1;
1475 } else
1476 get_min_max(cval, valinfo->min_value);
1477 }
1da177e4
LT		 1478
1479 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1480 if (! kctl) {
1481 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1482 kfree(cval);
1483 return -ENOMEM;
1484 }
1485 kctl->private_free = usb_mixer_elem_free;
1486
c3a3e040
JK		 1487 if (check_mapped_name(map, kctl->id.name,
1488 sizeof(kctl->id.name)))
1489 /* nothing */ ;
1da177e4
LT		 1490 else if (info->name)
1491 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1492 else {
1493 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1494 len = 0;
1495 if (nameid)
1496 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1497 if (! len)
1498 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1499 }
08d1e635
TI		 1500 append_ctl_name(kctl, " ");
1501 append_ctl_name(kctl, valinfo->suffix);
1da177e4
LT		 1502
1503 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1504 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1505 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1506 return err;
1507 }
1508 return 0;
1509}
1510
1511
86e07d34 1512static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4
LT		 1513{
1514 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1515}
1516
86e07d34 1517static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4 1518{
7d2b451e 1519 return build_audio_procunit(state, unitid, desc, extunits, "Extension Unit");
1da177e4
LT		 1520}
1521
1522
1523/*
1524 * Selector Unit
1525 */
1526
1527/* info callback for selector unit
1528 * use an enumerator type for routing
1529 */
86e07d34 1530static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4 1531{
86e07d34 1532 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1533 char **itemlist = (char **)kcontrol->private_value;
1534
5e246b85
TI		 1535 if (snd_BUG_ON(!itemlist))
1536 return -EINVAL;
1da177e4
LT		 1537 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1538 uinfo->count = 1;
1539 uinfo->value.enumerated.items = cval->max;
1540 if ((int)uinfo->value.enumerated.item >= cval->max)
1541 uinfo->value.enumerated.item = cval->max - 1;
1542 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1543 return 0;
1544}
1545
1546/* get callback for selector unit */
86e07d34 1547static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1548{
86e07d34 1549 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1550 int val, err;
1551
1552 err = get_cur_ctl_value(cval, 0, &val);
1553 if (err < 0) {
84957a8a 1554 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1555 ucontrol->value.enumerated.item[0] = 0;
1556 return 0;
1557 }
1558 return err;
1559 }
1560 val = get_relative_value(cval, val);
1561 ucontrol->value.enumerated.item[0] = val;
1562 return 0;
1563}
1564
1565/* put callback for selector unit */
86e07d34 1566static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1567{
86e07d34 1568 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1569 int val, oval, err;
1570
1571 err = get_cur_ctl_value(cval, 0, &oval);
1572 if (err < 0) {
84957a8a 1573 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1574 return 0;
1575 return err;
1576 }
1577 val = ucontrol->value.enumerated.item[0];
1578 val = get_abs_value(cval, val);
1579 if (val != oval) {
1580 set_cur_ctl_value(cval, 0, val);
1581 return 1;
1582 }
1583 return 0;
1584}
1585
1586/* alsa control interface for selector unit */
86e07d34 1587static struct snd_kcontrol_new mixer_selectunit_ctl = {
1da177e4
LT		 1588 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1589 .name = "", /* will be filled later */
1590 .info = mixer_ctl_selector_info,
1591 .get = mixer_ctl_selector_get,
1592 .put = mixer_ctl_selector_put,
1593};
1594
1595
1596/* private free callback.
1597 * free both private_data and private_value
1598 */
86e07d34 1599static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1da177e4
LT		 1600{
1601 int i, num_ins = 0;
1602
1603 if (kctl->private_data) {
86e07d34 1604 struct usb_mixer_elem_info *cval = kctl->private_data;
1da177e4
LT		 1605 num_ins = cval->max;
1606 kfree(cval);
1607 kctl->private_data = NULL;
1608 }
1609 if (kctl->private_value) {
1610 char **itemlist = (char **)kctl->private_value;
1611 for (i = 0; i < num_ins; i++)
1612 kfree(itemlist[i]);
1613 kfree(itemlist);
1614 kctl->private_value = 0;
1615 }
1616}
1617
1618/*
1619 * parse a selector unit
1620 */
86e07d34 1621static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4
LT		 1622{
1623 unsigned int num_ins = desc[4];
1624 unsigned int i, nameid, len;
1625 int err;
86e07d34
TI		 1626 struct usb_mixer_elem_info *cval;
1627 struct snd_kcontrol *kctl;
c3a3e040 1628 const struct usbmix_name_map *map;
1da177e4
LT		 1629 char **namelist;
1630
38977e96 1631 if (! num_ins || desc[0] < 5 + num_ins) {
1da177e4
LT		 1632 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1633 return -EINVAL;
1634 }
1635
1636 for (i = 0; i < num_ins; i++) {
1637 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1638 return err;
1639 }
1640
1641 if (num_ins == 1) /* only one ? nonsense! */
1642 return 0;
1643
c3a3e040
JK		 1644 map = find_map(state, unitid, 0);
1645 if (check_ignored_ctl(map))
1da177e4
LT		 1646 return 0;
1647
561b220a 1648 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 1649 if (! cval) {
1650 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1651 return -ENOMEM;
1652 }
84957a8a 1653 cval->mixer = state->mixer;
1da177e4
LT		 1654 cval->id = unitid;
1655 cval->val_type = USB_MIXER_U8;
1656 cval->channels = 1;
1657 cval->min = 1;
1658 cval->max = num_ins;
1659 cval->res = 1;
1660 cval->initialized = 1;
1661
1662 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1663 if (! namelist) {
1664 snd_printk(KERN_ERR "cannot malloc\n");
1665 kfree(cval);
1666 return -ENOMEM;
1667 }
1668#define MAX_ITEM_NAME_LEN 64
1669 for (i = 0; i < num_ins; i++) {
86e07d34 1670 struct usb_audio_term iterm;
1da177e4
LT		 1671 len = 0;
1672 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1673 if (! namelist[i]) {
1674 snd_printk(KERN_ERR "cannot malloc\n");
7fbe3ca5 1675 while (i--)
1da177e4
LT		 1676 kfree(namelist[i]);
1677 kfree(namelist);
1678 kfree(cval);
1679 return -ENOMEM;
1680 }
8e062ec7
CL		 1681 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1682 MAX_ITEM_NAME_LEN);
1683 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1da177e4
LT		 1684 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1685 if (! len)
1686 sprintf(namelist[i], "Input %d", i);
1687 }
1688
1689 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1690 if (! kctl) {
1691 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
878b4789 1692 kfree(namelist);
1da177e4
LT		 1693 kfree(cval);
1694 return -ENOMEM;
1695 }
1696 kctl->private_value = (unsigned long)namelist;
1697 kctl->private_free = usb_mixer_selector_elem_free;
1698
1699 nameid = desc[desc[0] - 1];
c3a3e040 1700 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1da177e4
LT		 1701 if (len)
1702 ;
1703 else if (nameid)
1704 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1705 else {
1706 len = get_term_name(state, &state->oterm,
1707 kctl->id.name, sizeof(kctl->id.name), 0);
1708 if (! len)
1709 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1710
1711 if ((state->oterm.type & 0xff00) == 0x0100)
08d1e635 1712 append_ctl_name(kctl, " Capture Source");
1da177e4 1713 else
08d1e635 1714 append_ctl_name(kctl, " Playback Source");
1da177e4
LT		 1715 }
1716
1717 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1718 cval->id, kctl->id.name, num_ins);
84957a8a 1719 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1720 return err;
1721
1722 return 0;
1723}
1724
1725
1726/*
1727 * parse an audio unit recursively
1728 */
1729
86e07d34 1730static int parse_audio_unit(struct mixer_build *state, int unitid)
1da177e4
LT		 1731{
1732 unsigned char *p1;
1733
1734 if (test_and_set_bit(unitid, state->unitbitmap))
1735 return 0; /* the unit already visited */
1736
1737 p1 = find_audio_control_unit(state, unitid);
1738 if (!p1) {
1739 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1740 return -EINVAL;
1741 }
1742
1743 switch (p1[2]) {
de48c7bc 1744 case UAC_INPUT_TERMINAL:
1da177e4 1745 return 0; /* NOP */
de48c7bc 1746 case UAC_MIXER_UNIT:
1da177e4 1747 return parse_audio_mixer_unit(state, unitid, p1);
de48c7bc 1748 case UAC_SELECTOR_UNIT:
1da177e4 1749 return parse_audio_selector_unit(state, unitid, p1);
de48c7bc 1750 case UAC_FEATURE_UNIT:
1da177e4 1751 return parse_audio_feature_unit(state, unitid, p1);
de48c7bc 1752 case UAC_PROCESSING_UNIT_V1:
1da177e4 1753 return parse_audio_processing_unit(state, unitid, p1);
de48c7bc 1754 case UAC_EXTENSION_UNIT_V1:
1da177e4
LT		 1755 return parse_audio_extension_unit(state, unitid, p1);
1756 default:
1757 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1758 return -EINVAL;
1759 }
1760}
1761
84957a8a
CL		 1762static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1763{
6639b6c2
CL		 1764 kfree(mixer->id_elems);
1765 if (mixer->urb) {
1766 kfree(mixer->urb->transfer_buffer);
1767 usb_free_urb(mixer->urb);
1768 }
68df9de1 1769 usb_free_urb(mixer->rc_urb);
b259b10c 1770 kfree(mixer->rc_setup_packet);
84957a8a
CL		 1771 kfree(mixer);
1772}
1773
86e07d34 1774static int snd_usb_mixer_dev_free(struct snd_device *device)
84957a8a
CL		 1775{
1776 struct usb_mixer_interface *mixer = device->device_data;
1777 snd_usb_mixer_free(mixer);
1778 return 0;
1779}
1780
1da177e4
LT		 1781/*
1782 * create mixer controls
1783 *
de48c7bc 1784 * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers
1da177e4 1785 */
84957a8a 1786static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1da177e4 1787{
28e1b773 1788 struct uac_output_terminal_descriptor_v1 *desc;
86e07d34 1789 struct mixer_build state;
1da177e4
LT		 1790 int err;
1791 const struct usbmix_ctl_map *map;
84957a8a 1792 struct usb_host_interface *hostif;
1da177e4 1793
84957a8a 1794 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1da177e4 1795 memset(&state, 0, sizeof(state));
84957a8a
CL		 1796 state.chip = mixer->chip;
1797 state.mixer = mixer;
1da177e4
LT		 1798 state.buffer = hostif->extra;
1799 state.buflen = hostif->extralen;
1da177e4
LT		 1800
1801 /* check the mapping table */
27d10f56
CL		 1802 for (map = usbmix_ctl_maps; map->id; map++) {
1803 if (map->id == state.chip->usb_id) {
1da177e4 1804 state.map = map->map;
8e062ec7 1805 state.selector_map = map->selector_map;
84957a8a 1806 mixer->ignore_ctl_error = map->ignore_ctl_error;
1da177e4
LT		 1807 break;
1808 }
1809 }
1da177e4
LT		 1810
1811 desc = NULL;
de48c7bc 1812 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, UAC_OUTPUT_TERMINAL)) != NULL) {
28e1b773 1813 if (desc->bLength < 9)
1da177e4 1814 continue; /* invalid descriptor? */
28e1b773
DM		 1815 set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
1816 state.oterm.id = desc->bTerminalID;
1817 state.oterm.type = le16_to_cpu(desc->wTerminalType);
1818 state.oterm.name = desc->iTerminal;
1819 err = parse_audio_unit(&state, desc->bSourceID);
1da177e4
LT		 1820 if (err < 0)
1821 return err;
1822 }
1823 return 0;
1824}
84957a8a 1825
6639b6c2
CL		 1826static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1827 int unitid)
1828{
86e07d34 1829 struct usb_mixer_elem_info *info;
6639b6c2
CL		 1830
1831 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1832 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1833 info->elem_id);
1834}
1835
ebfdeea3
JK		 1836static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
1837 int unitid,
1838 struct usb_mixer_elem_info *cval)
1839{
1840 static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN",
1841 "S8", "U8", "S16", "U16"};
1842 snd_iprintf(buffer, " Unit: %i\n", unitid);
1843 if (cval->elem_id)
1844 snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n",
1845 cval->elem_id->name, cval->elem_id->index);
1846 snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, "
1847 "channels=%i, type=\"%s\"\n", cval->id,
1848 cval->control, cval->cmask, cval->channels,
1849 val_types[cval->val_type]);
1850 snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n",
1851 cval->min, cval->max, cval->dBmin, cval->dBmax);
1852}
1853
1854static void snd_usb_mixer_proc_read(struct snd_info_entry *entry,
1855 struct snd_info_buffer *buffer)
1856{
1857 struct snd_usb_audio *chip = entry->private_data;
1858 struct usb_mixer_interface *mixer;
1859 struct usb_mixer_elem_info *cval;
1860 int unitid;
1861
1862 list_for_each_entry(mixer, &chip->mixer_list, list) {
1863 snd_iprintf(buffer,
7affdc17
JK		 1864 "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n",
1865 chip->usb_id, mixer->ctrlif,
1866 mixer->ignore_ctl_error);
ebfdeea3
JK		 1867 snd_iprintf(buffer, "Card: %s\n", chip->card->longname);
1868 for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) {
1869 for (cval = mixer->id_elems[unitid]; cval;
1870 cval = cval->next_id_elem)
1871 snd_usb_mixer_dump_cval(buffer, unitid, cval);
1872 }
1873 }
1874}
1875
b259b10c
CL		 1876static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1877 int unitid)
1878{
4d1a70da 1879 if (!mixer->rc_cfg)
aafad562
CL		 1880 return;
1881 /* unit ids specific to Extigy/Audigy 2 NX: */
1882 switch (unitid) {
1883 case 0: /* remote control */
b259b10c
CL		 1884 mixer->rc_urb->dev = mixer->chip->dev;
1885 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
aafad562
CL		 1886 break;
1887 case 4: /* digital in jack */
1888 case 7: /* line in jacks */
1889 case 19: /* speaker out jacks */
1890 case 20: /* headphones out jack */
1891 break;
69b1f1e8
TB		 1892 /* live24ext: 4 = line-in jack */
1893 case 3: /* hp-out jack (may actuate Mute) */
3195954d
AB		 1894 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1895 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
69b1f1e8
TB		 1896 snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
1897 break;
aafad562
CL		 1898 default:
1899 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
1900 break;
b259b10c
CL		 1901 }
1902}
1903
7d12e780 1904static void snd_usb_mixer_status_complete(struct urb *urb)
6639b6c2
CL		 1905{
1906 struct usb_mixer_interface *mixer = urb->context;
1907
1908 if (urb->status == 0) {
1909 u8 *buf = urb->transfer_buffer;
1910 int i;
1911
1912 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1913 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1914 buf[0], buf[1]);
1915 /* ignore any notifications not from the control interface */
1916 if ((buf[0] & 0x0f) != 0)
1917 continue;
1918 if (!(buf[0] & 0x40))
1919 snd_usb_mixer_notify_id(mixer, buf[1]);
b259b10c
CL		 1920 else
1921 snd_usb_mixer_memory_change(mixer, buf[1]);
6639b6c2
CL		 1922 }
1923 }
1924 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1925 urb->dev = mixer->chip->dev;
1926 usb_submit_urb(urb, GFP_ATOMIC);
1927 }
1928}
1929
1930/* create the handler for the optional status interrupt endpoint */
1931static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1932{
1933 struct usb_host_interface *hostif;
1934 struct usb_endpoint_descriptor *ep;
1935 void *transfer_buffer;
1936 int buffer_length;
1937 unsigned int epnum;
1938
1939 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1940 /* we need one interrupt input endpoint */
1941 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1942 return 0;
1943 ep = get_endpoint(hostif, 0);
913ae5a2 1944 if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
6639b6c2
CL		 1945 return 0;
1946
42a6e66f 1947 epnum = usb_endpoint_num(ep);
6639b6c2
CL		 1948 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1949 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1950 if (!transfer_buffer)
1951 return -ENOMEM;
1952 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1953 if (!mixer->urb) {
1954 kfree(transfer_buffer);
1955 return -ENOMEM;
1956 }
1957 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1958 usb_rcvintpipe(mixer->chip->dev, epnum),
1959 transfer_buffer, buffer_length,
1960 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1961 usb_submit_urb(mixer->urb, GFP_KERNEL);
1962 return 0;
1963}
1964
7d12e780 1965static void snd_usb_soundblaster_remote_complete(struct urb *urb)
b259b10c
CL		 1966{
1967 struct usb_mixer_interface *mixer = urb->context;
4d1a70da 1968 const struct rc_config *rc = mixer->rc_cfg;
b259b10c
CL		 1969 u32 code;
1970
b9c196e1 1971 if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
b259b10c 1972 return;
4d1a70da
RC		 1973
1974 code = mixer->rc_buffer[rc->offset];
1975 if (rc->length == 2)
1976 code |= mixer->rc_buffer[rc->offset + 1] << 8;
1977
b259b10c 1978 /* the Mute button actually changes the mixer control */
4d1a70da
RC		 1979 if (code == rc->mute_code)
1980 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
b259b10c
CL		 1981 mixer->rc_code = code;
1982 wmb();
1983 wake_up(&mixer->rc_waitq);
1984}
1985
86e07d34 1986static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
b259b10c
CL		 1987 long count, loff_t *offset)
1988{
1989 struct usb_mixer_interface *mixer = hw->private_data;
1990 int err;
1991 u32 rc_code;
1992
434b7f56 1993 if (count != 1 && count != 4)
b259b10c
CL		 1994 return -EINVAL;
1995 err = wait_event_interruptible(mixer->rc_waitq,
1996 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1997 if (err == 0) {
434b7f56
CL		 1998 if (count == 1)
1999 err = put_user(rc_code, buf);
2000 else
2001 err = put_user(rc_code, (u32 __user *)buf);
b259b10c
CL		 2002 }
2003 return err < 0 ? err : count;
2004}
2005
86e07d34 2006static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
b259b10c
CL		 2007 poll_table *wait)
2008{
2009 struct usb_mixer_interface *mixer = hw->private_data;
2010
2011 poll_wait(file, &mixer->rc_waitq, wait);
2012 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
2013}
2014
2015static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
2016{
86e07d34 2017 struct snd_hwdep *hwdep;
4d1a70da 2018 int err, len, i;
b259b10c 2019
4d1a70da
RC		 2020 for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
2021 if (rc_configs[i].usb_id == mixer->chip->usb_id)
2022 break;
2023 if (i >= ARRAY_SIZE(rc_configs))
b259b10c 2024 return 0;
4d1a70da 2025 mixer->rc_cfg = &rc_configs[i];
b259b10c 2026
4d1a70da
RC		 2027 len = mixer->rc_cfg->packet_length;
2028
b259b10c
CL		 2029 init_waitqueue_head(&mixer->rc_waitq);
2030 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
2031 if (err < 0)
2032 return err;
2033 snprintf(hwdep->name, sizeof(hwdep->name),
2034 "%s remote control", mixer->chip->card->shortname);
2035 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
2036 hwdep->private_data = mixer;
2037 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
b259b10c 2038 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
28b7e343 2039 hwdep->exclusive = 1;
b259b10c
CL		 2040
2041 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
2042 if (!mixer->rc_urb)
2043 return -ENOMEM;
2044 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
2045 if (!mixer->rc_setup_packet) {
2046 usb_free_urb(mixer->rc_urb);
2047 mixer->rc_urb = NULL;
2048 return -ENOMEM;
2049 }
2050 mixer->rc_setup_packet->bRequestType =
2051 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
de48c7bc 2052 mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
b259b10c
CL		 2053 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
2054 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
2055 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
2056 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
2057 usb_rcvctrlpipe(mixer->chip->dev, 0),
2058 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
2059 snd_usb_soundblaster_remote_complete, mixer);
2060 return 0;
2061}
2062
a5ce8890 2063#define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
93446edc 2064
86e07d34 2065static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
93446edc
CL		 2066{
2067 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2068 int index = kcontrol->private_value;
2069
2070 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
2071 return 0;
2072}
2073
86e07d34 2074static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
93446edc
CL		 2075{
2076 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2077 int index = kcontrol->private_value;
2078 int value = ucontrol->value.integer.value[0];
2079 int err, changed;
2080
2081 if (value > 1)
2082 return -EINVAL;
2083 changed = value != mixer->audigy2nx_leds[index];
2084 err = snd_usb_ctl_msg(mixer->chip->dev,
2085 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
2086 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
2087 value, index + 2, NULL, 0, 100);
2088 if (err < 0)
2089 return err;
2090 mixer->audigy2nx_leds[index] = value;
2091 return changed;
2092}
2093
86e07d34 2094static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
93446edc
CL		 2095 {
2096 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2097 .name = "CMSS LED Switch",
2098 .info = snd_audigy2nx_led_info,
2099 .get = snd_audigy2nx_led_get,
2100 .put = snd_audigy2nx_led_put,
2101 .private_value = 0,
2102 },
2103 {
2104 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2105 .name = "Power LED Switch",
2106 .info = snd_audigy2nx_led_info,
2107 .get = snd_audigy2nx_led_get,
2108 .put = snd_audigy2nx_led_put,
2109 .private_value = 1,
2110 },
2111 {
2112 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2113 .name = "Dolby Digital LED Switch",
2114 .info = snd_audigy2nx_led_info,
2115 .get = snd_audigy2nx_led_get,
2116 .put = snd_audigy2nx_led_put,
2117 .private_value = 2,
2118 },
2119};
2120
2121static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
2122{
2123 int i, err;
2124
2125 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
3195954d
AB		 2126 if (i > 1 && /* Live24ext has 2 LEDs only */
2127 (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2128 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
69b1f1e8 2129 break;
93446edc
CL		 2130 err = snd_ctl_add(mixer->chip->card,
2131 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
2132 if (err < 0)
2133 return err;
2134 }
2135 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
2136 return 0;
2137}
2138
86e07d34
TI		 2139static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
2140 struct snd_info_buffer *buffer)
aafad562 2141{
69b1f1e8 2142 static const struct sb_jack {
aafad562
CL		 2143 int unitid;
2144 const char *name;
69b1f1e8 2145 } jacks_audigy2nx[] = {
aafad562
CL		 2146 {4, "dig in "},
2147 {7, "line in"},
2148 {19, "spk out"},
2149 {20, "hph out"},
69b1f1e8
TB		 2150 {-1, NULL}
2151 }, jacks_live24ext[] = {
2152 {4, "line in"}, /* &1=Line, &2=Mic*/
2153 {3, "hph out"}, /* headphones */
2154 {0, "RC "}, /* last command, 6 bytes see rc_config above */
2155 {-1, NULL}
aafad562 2156 };
69b1f1e8 2157 const struct sb_jack *jacks;
aafad562
CL		 2158 struct usb_mixer_interface *mixer = entry->private_data;
2159 int i, err;
2160 u8 buf[3];
2161
2162 snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
69b1f1e8
TB		 2163 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
2164 jacks = jacks_audigy2nx;
3195954d
AB		 2165 else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2166 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
69b1f1e8
TB		 2167 jacks = jacks_live24ext;
2168 else
2169 return;
2170
2171 for (i = 0; jacks[i].name; ++i) {
aafad562
CL		 2172 snd_iprintf(buffer, "%s: ", jacks[i].name);
2173 err = snd_usb_ctl_msg(mixer->chip->dev,
2174 usb_rcvctrlpipe(mixer->chip->dev, 0),
de48c7bc 2175 UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
aafad562
CL		 2176 USB_RECIP_INTERFACE, 0,
2177 jacks[i].unitid << 8, buf, 3, 100);
69b1f1e8 2178 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
aafad562
CL		 2179 snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
2180 else
2181 snd_iprintf(buffer, "?\n");
2182 }
2183}
2184
468b8fde
CL		 2185static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
2186 struct snd_ctl_elem_value *ucontrol)
2187{
2188 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2189
2190 ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
2191 return 0;
2192}
2193
2194static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
2195 struct snd_ctl_elem_value *ucontrol)
2196{
2197 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2198 u8 old_status, new_status;
2199 int err, changed;
2200
2201 old_status = mixer->xonar_u1_status;
2202 if (ucontrol->value.integer.value[0])
2203 new_status = old_status | 0x02;
2204 else
2205 new_status = old_status & ~0x02;
2206 changed = new_status != old_status;
2207 err = snd_usb_ctl_msg(mixer->chip->dev,
2208 usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
2209 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
2210 50, 0, &new_status, 1, 100);
2211 if (err < 0)
2212 return err;
2213 mixer->xonar_u1_status = new_status;
2214 return changed;
2215}
2216
2217static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
2218 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2219 .name = "Digital Playback Switch",
2220 .info = snd_ctl_boolean_mono_info,
2221 .get = snd_xonar_u1_switch_get,
2222 .put = snd_xonar_u1_switch_put,
2223};
2224
2225static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
2226{
2227 int err;
2228
2229 err = snd_ctl_add(mixer->chip->card,
2230 snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
2231 if (err < 0)
2232 return err;
2233 mixer->xonar_u1_status = 0x05;
2234 return 0;
2235}
2236
7d2b451e 2237void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
ebfdeea3 2238 unsigned char samplerate_id)
7d2b451e 2239{
ebfdeea3
JK		 2240 struct usb_mixer_interface *mixer;
2241 struct usb_mixer_elem_info *cval;
2242 int unitid = 12; /* SamleRate ExtensionUnit ID */
7d2b451e 2243
ebfdeea3
JK		 2244 list_for_each_entry(mixer, &chip->mixer_list, list) {
2245 cval = mixer->id_elems[unitid];
2246 if (cval) {
2247 set_cur_ctl_value(cval, cval->control << 8,
2248 samplerate_id);
7d2b451e 2249 snd_usb_mixer_notify_id(mixer, unitid);
ebfdeea3
JK		 2250 }
2251 break;
2252 }
7d2b451e
SK		 2253}
2254
7a9b8063
TI		 2255int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
2256 int ignore_error)
84957a8a 2257{
86e07d34 2258 static struct snd_device_ops dev_ops = {
84957a8a
CL		 2259 .dev_free = snd_usb_mixer_dev_free
2260 };
2261 struct usb_mixer_interface *mixer;
ebfdeea3 2262 struct snd_info_entry *entry;
7b8a043f
DM		 2263 struct usb_host_interface *host_iface;
2264 int err, protocol;
84957a8a
CL		 2265
2266 strcpy(chip->card->mixername, "USB Mixer");
2267
561b220a 2268 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
84957a8a
CL		 2269 if (!mixer)
2270 return -ENOMEM;
2271 mixer->chip = chip;
2272 mixer->ctrlif = ctrlif;
7a9b8063 2273 mixer->ignore_ctl_error = ignore_error;
291186e0
JK		 2274 mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems),
2275 GFP_KERNEL);
6639b6c2
CL		 2276 if (!mixer->id_elems) {
2277 kfree(mixer);
2278 return -ENOMEM;
2279 }
84957a8a 2280
7b8a043f
DM		 2281 host_iface = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
2282 protocol = host_iface->desc.bInterfaceProtocol;
2283
2284 /* FIXME! */
2285 if (protocol != UAC_VERSION_1) {
2286 snd_printk(KERN_WARNING "mixer interface protocol 0x%02x not yet supported\n",
2287 protocol);
2288 return 0;
2289 }
2290
6639b6c2 2291 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
93446edc
CL		 2292 (err = snd_usb_mixer_status_create(mixer)) < 0)
2293 goto _error;
84957a8a 2294
93446edc
CL		 2295 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
2296 goto _error;
2297
69b1f1e8 2298 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
3195954d
AB		 2299 mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2300 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
93446edc
CL		 2301 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
2302 goto _error;
aafad562 2303 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
bf850204 2304 snd_info_set_text_ops(entry, mixer,
aafad562 2305 snd_audigy2nx_proc_read);
b259b10c
CL		 2306 }
2307
468b8fde
CL		 2308 if (mixer->chip->usb_id == USB_ID(0x0b05, 0x1739) ||
2309 mixer->chip->usb_id == USB_ID(0x0b05, 0x1743)) {
2310 err = snd_xonar_u1_controls_create(mixer);
2311 if (err < 0)
2312 goto _error;
2313 }
2314
84957a8a 2315 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
93446edc
CL		 2316 if (err < 0)
2317 goto _error;
ebfdeea3
JK		 2318
2319 if (list_empty(&chip->mixer_list) &&
2320 !snd_card_proc_new(chip->card, "usbmixer", &entry))
2321 snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read);
2322
84957a8a
CL		 2323 list_add(&mixer->list, &chip->mixer_list);
2324 return 0;
93446edc
CL		 2325
2326_error:
2327 snd_usb_mixer_free(mixer);
2328 return err;
84957a8a
CL		 2329}
2330
2331void snd_usb_mixer_disconnect(struct list_head *p)
2332{
6639b6c2
CL		 2333 struct usb_mixer_interface *mixer;
2334
2335 mixer = list_entry(p, struct usb_mixer_interface, list);
68df9de1
MK		 2336 usb_kill_urb(mixer->urb);
2337 usb_kill_urb(mixer->rc_urb);
84957a8a 2338}
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