projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ALSA: usb-audio - Added functionality for E-mu 0404USB/0202USB/TrackerPre
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / usbmixer.c
CommitLineData
1da177e4
LT		 1/*
2 * (Tentative) USB Audio Driver for ALSA
3 *
4 * Mixer control part
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
11 *
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 */
28
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>
35#include <sound/core.h>
36#include <sound/control.h>
b259b10c 37#include <sound/hwdep.h>
aafad562 38#include <sound/info.h>
7bc5ba7e 39#include <sound/tlv.h>
1da177e4
LT		 40
41#include "usbaudio.h"
42
1da177e4
LT		 43/*
44 */
45
46/* ignore error from controls - for debugging */
47/* #define IGNORE_CTL_ERROR */
48
4d1a70da
RC		 49/*
50 * Sound Blaster remote control configuration
51 *
52 * format of remote control data:
53 * Extigy: xx 00
54 * Audigy 2 NX: 06 80 xx 00 00 00
55 * Live! 24-bit: 06 80 xx yy 22 83
56 */
57static const struct rc_config {
58 u32 usb_id;
59 u8 offset;
60 u8 length;
61 u8 packet_length;
b9c196e1 62 u8 min_packet_length; /* minimum accepted length of the URB result */
4d1a70da
RC		 63 u8 mute_mixer_id;
64 u32 mute_code;
65} rc_configs[] = {
b9c196e1
PMJ		 66 { USB_ID(0x041e, 0x3000), 0, 1, 2, 1, 18, 0x0013 }, /* Extigy */
67 { USB_ID(0x041e, 0x3020), 2, 1, 6, 6, 18, 0x0013 }, /* Audigy 2 NX */
68 { USB_ID(0x041e, 0x3040), 2, 2, 6, 6, 2, 0x6e91 }, /* Live! 24-bit */
3195954d 69 { USB_ID(0x041e, 0x3048), 2, 2, 6, 6, 2, 0x6e91 }, /* Toshiba SB0500 */
4d1a70da
RC		 70};
71
84957a8a 72struct usb_mixer_interface {
86e07d34 73 struct snd_usb_audio *chip;
84957a8a
CL		 74 unsigned int ctrlif;
75 struct list_head list;
76 unsigned int ignore_ctl_error;
6639b6c2 77 struct urb *urb;
86e07d34 78 struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */
b259b10c
CL		 79
80 /* Sound Blaster remote control stuff */
4d1a70da 81 const struct rc_config *rc_cfg;
b259b10c
CL		 82 u32 rc_code;
83 wait_queue_head_t rc_waitq;
84 struct urb *rc_urb;
85 struct usb_ctrlrequest *rc_setup_packet;
86 u8 rc_buffer[6];
93446edc
CL		 87
88 u8 audigy2nx_leds[3];
468b8fde 89 u8 xonar_u1_status;
84957a8a
CL		 90};
91
92
1da177e4
LT		 93struct usb_audio_term {
94 int id;
95 int type;
96 int channels;
97 unsigned int chconfig;
98 int name;
99};
100
101struct usbmix_name_map;
102
86e07d34
TI		 103struct mixer_build {
104 struct snd_usb_audio *chip;
84957a8a 105 struct usb_mixer_interface *mixer;
1da177e4
LT		 106 unsigned char *buffer;
107 unsigned int buflen;
707e6073 108 DECLARE_BITMAP(unitbitmap, 256);
86e07d34 109 struct usb_audio_term oterm;
1da177e4 110 const struct usbmix_name_map *map;
8e062ec7 111 const struct usbmix_selector_map *selector_map;
1da177e4
LT		 112};
113
641b4879
TI		 114#define MAX_CHANNELS 10 /* max logical channels */
115
1da177e4 116struct usb_mixer_elem_info {
84957a8a 117 struct usb_mixer_interface *mixer;
86e07d34
TI		 118 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
119 struct snd_ctl_elem_id *elem_id;
1da177e4
LT		 120 unsigned int id;
121 unsigned int control; /* CS or ICN (high byte) */
122 unsigned int cmask; /* channel mask bitmap: 0 = master */
123 int channels;
124 int val_type;
125 int min, max, res;
641b4879
TI		 126 int cached;
127 int cache_val[MAX_CHANNELS];
6639b6c2 128 u8 initialized;
1da177e4
LT		 129};
130
131
132enum {
133 USB_FEATURE_NONE = 0,
134 USB_FEATURE_MUTE = 1,
135 USB_FEATURE_VOLUME,
136 USB_FEATURE_BASS,
137 USB_FEATURE_MID,
138 USB_FEATURE_TREBLE,
139 USB_FEATURE_GEQ,
140 USB_FEATURE_AGC,
141 USB_FEATURE_DELAY,
142 USB_FEATURE_BASSBOOST,
143 USB_FEATURE_LOUDNESS
144};
145
146enum {
147 USB_MIXER_BOOLEAN,
148 USB_MIXER_INV_BOOLEAN,
149 USB_MIXER_S8,
150 USB_MIXER_U8,
151 USB_MIXER_S16,
152 USB_MIXER_U16,
153};
154
155enum {
156 USB_PROC_UPDOWN = 1,
157 USB_PROC_UPDOWN_SWITCH = 1,
158 USB_PROC_UPDOWN_MODE_SEL = 2,
159
160 USB_PROC_PROLOGIC = 2,
161 USB_PROC_PROLOGIC_SWITCH = 1,
162 USB_PROC_PROLOGIC_MODE_SEL = 2,
163
164 USB_PROC_3DENH = 3,
165 USB_PROC_3DENH_SWITCH = 1,
166 USB_PROC_3DENH_SPACE = 2,
167
168 USB_PROC_REVERB = 4,
169 USB_PROC_REVERB_SWITCH = 1,
170 USB_PROC_REVERB_LEVEL = 2,
171 USB_PROC_REVERB_TIME = 3,
172 USB_PROC_REVERB_DELAY = 4,
173
174 USB_PROC_CHORUS = 5,
175 USB_PROC_CHORUS_SWITCH = 1,
176 USB_PROC_CHORUS_LEVEL = 2,
177 USB_PROC_CHORUS_RATE = 3,
178 USB_PROC_CHORUS_DEPTH = 4,
179
180 USB_PROC_DCR = 6,
181 USB_PROC_DCR_SWITCH = 1,
182 USB_PROC_DCR_RATIO = 2,
183 USB_PROC_DCR_MAX_AMP = 3,
184 USB_PROC_DCR_THRESHOLD = 4,
185 USB_PROC_DCR_ATTACK = 5,
186 USB_PROC_DCR_RELEASE = 6,
187};
188
7d2b451e
SK		 189/*E-mu 0202(0404) eXtension Unit(XU) control*/
190enum {
191 USB_XU_CLOCK_RATE = 0xe301,
192 USB_XU_CLOCK_SOURCE = 0xe302,
193 USB_XU_DIGITAL_IO_STATUS = 0xe303,
194 USB_XU_DEVICE_OPTIONS = 0xe304,
195 USB_XU_DIRECT_MONITORING = 0xe305,
196 USB_XU_METERING = 0xe306
197};
198enum {
199 USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/
200 USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */
201 USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */
202 USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */
203};
1da177e4
LT		 204
205/*
206 * manual mapping of mixer names
207 * if the mixer topology is too complicated and the parsed names are
208 * ambiguous, add the entries in usbmixer_maps.c.
209 */
210#include "usbmixer_maps.c"
211
212/* get the mapped name if the unit matches */
86e07d34 213static int check_mapped_name(struct mixer_build *state, int unitid, int control, char *buf, int buflen)
1da177e4
LT		 214{
215 const struct usbmix_name_map *p;
216
217 if (! state->map)
218 return 0;
219
220 for (p = state->map; p->id; p++) {
221 if (p->id == unitid && p->name &&
222 (! control || ! p->control || control == p->control)) {
223 buflen--;
224 return strlcpy(buf, p->name, buflen);
225 }
226 }
227 return 0;
228}
229
230/* check whether the control should be ignored */
86e07d34 231static int check_ignored_ctl(struct mixer_build *state, int unitid, int control)
1da177e4
LT		 232{
233 const struct usbmix_name_map *p;
234
235 if (! state->map)
236 return 0;
237 for (p = state->map; p->id; p++) {
238 if (p->id == unitid && ! p->name &&
239 (! control || ! p->control || control == p->control)) {
54530bde
TI		 240 /*
241 printk(KERN_DEBUG "ignored control %d:%d\n",
242 unitid, control);
243 */
1da177e4
LT		 244 return 1;
245 }
246 }
247 return 0;
248}
249
8e062ec7 250/* get the mapped selector source name */
86e07d34 251static int check_mapped_selector_name(struct mixer_build *state, int unitid,
8e062ec7
CL		 252 int index, char *buf, int buflen)
253{
254 const struct usbmix_selector_map *p;
255
256 if (! state->selector_map)
257 return 0;
258 for (p = state->selector_map; p->id; p++) {
259 if (p->id == unitid && index < p->count)
260 return strlcpy(buf, p->names[index], buflen);
261 }
262 return 0;
263}
264
1da177e4
LT		 265/*
266 * find an audio control unit with the given unit id
267 */
86e07d34 268static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
1da177e4
LT		 269{
270 unsigned char *p;
271
272 p = NULL;
273 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
274 USB_DT_CS_INTERFACE)) != NULL) {
275 if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
276 return p;
277 }
278 return NULL;
279}
280
281
282/*
283 * copy a string with the given id
284 */
86e07d34 285static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
1da177e4
LT		 286{
287 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
288 buf[len] = 0;
289 return len;
290}
291
292/*
293 * convert from the byte/word on usb descriptor to the zero-based integer
294 */
86e07d34 295static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 296{
297 switch (cval->val_type) {
298 case USB_MIXER_BOOLEAN:
299 return !!val;
300 case USB_MIXER_INV_BOOLEAN:
301 return !val;
302 case USB_MIXER_U8:
303 val &= 0xff;
304 break;
305 case USB_MIXER_S8:
306 val &= 0xff;
307 if (val >= 0x80)
308 val -= 0x100;
309 break;
310 case USB_MIXER_U16:
311 val &= 0xffff;
312 break;
313 case USB_MIXER_S16:
314 val &= 0xffff;
315 if (val >= 0x8000)
316 val -= 0x10000;
317 break;
318 }
319 return val;
320}
321
322/*
323 * convert from the zero-based int to the byte/word for usb descriptor
324 */
86e07d34 325static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 326{
327 switch (cval->val_type) {
328 case USB_MIXER_BOOLEAN:
329 return !!val;
330 case USB_MIXER_INV_BOOLEAN:
331 return !val;
332 case USB_MIXER_S8:
333 case USB_MIXER_U8:
334 return val & 0xff;
335 case USB_MIXER_S16:
336 case USB_MIXER_U16:
337 return val & 0xffff;
338 }
339 return 0; /* not reached */
340}
341
86e07d34 342static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 343{
344 if (! cval->res)
345 cval->res = 1;
346 if (val < cval->min)
347 return 0;
14790f1c
TI		 348 else if (val >= cval->max)
349 return (cval->max - cval->min + cval->res - 1) / cval->res;
1da177e4
LT		 350 else
351 return (val - cval->min) / cval->res;
352}
353
86e07d34 354static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 355{
356 if (val < 0)
357 return cval->min;
358 if (! cval->res)
359 cval->res = 1;
360 val *= cval->res;
361 val += cval->min;
362 if (val > cval->max)
363 return cval->max;
364 return val;
365}
366
367
368/*
369 * retrieve a mixer value
370 */
371
86e07d34 372static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
1da177e4
LT		 373{
374 unsigned char buf[2];
375 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
376 int timeout = 10;
377
378 while (timeout-- > 0) {
84957a8a
CL		 379 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
380 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 381 request,
382 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
84957a8a 383 validx, cval->mixer->ctrlif | (cval->id << 8),
a04395ea 384 buf, val_len, 100) >= val_len) {
1da177e4
LT		 385 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
386 return 0;
387 }
388 }
84957a8a
CL		 389 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
390 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
1da177e4
LT		 391 return -EINVAL;
392}
393
86e07d34 394static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
1da177e4
LT		 395{
396 return get_ctl_value(cval, GET_CUR, validx, value);
397}
398
399/* channel = 0: master, 1 = first channel */
641b4879
TI		 400static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
401 int channel, int *value)
1da177e4
LT		 402{
403 return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value);
404}
405
641b4879
TI		 406static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
407 int channel, int index, int *value)
408{
409 int err;
410
411 if (cval->cached & (1 << channel)) {
412 *value = cval->cache_val[index];
413 return 0;
414 }
415 err = get_cur_mix_raw(cval, channel, value);
416 if (err < 0) {
417 if (!cval->mixer->ignore_ctl_error)
418 snd_printd(KERN_ERR "cannot get current value for "
419 "control %d ch %d: err = %d\n",
420 cval->control, channel, err);
421 return err;
422 }
423 cval->cached |= 1 << channel;
424 cval->cache_val[index] = *value;
425 return 0;
426}
427
428
1da177e4
LT		 429/*
430 * set a mixer value
431 */
432
86e07d34 433static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
1da177e4
LT		 434{
435 unsigned char buf[2];
436 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
437 int timeout = 10;
438
439 value_set = convert_bytes_value(cval, value_set);
440 buf[0] = value_set & 0xff;
441 buf[1] = (value_set >> 8) & 0xff;
cf3f9130 442 while (timeout-- > 0)
84957a8a
CL		 443 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
444 usb_sndctrlpipe(cval->mixer->chip->dev, 0),
1da177e4
LT		 445 request,
446 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
84957a8a 447 validx, cval->mixer->ctrlif | (cval->id << 8),
1da177e4
LT		 448 buf, val_len, 100) >= 0)
449 return 0;
84957a8a
CL		 450 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
451 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
1da177e4
LT		 452 return -EINVAL;
453}
454
86e07d34 455static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
1da177e4
LT		 456{
457 return set_ctl_value(cval, SET_CUR, validx, value);
458}
459
641b4879
TI		 460static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
461 int index, int value)
1da177e4 462{
641b4879
TI		 463 int err;
464 err = set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel,
465 value);
466 if (err < 0)
467 return err;
468 cval->cached |= 1 << channel;
469 cval->cache_val[index] = value;
470 return 0;
1da177e4
LT		 471}
472
7bc5ba7e
TI		 473/*
474 * TLV callback for mixer volume controls
475 */
476static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
477 unsigned int size, unsigned int __user *_tlv)
478{
479 struct usb_mixer_elem_info *cval = kcontrol->private_data;
b8e1c73f 480 DECLARE_TLV_DB_MINMAX(scale, 0, 0);
7bc5ba7e
TI		 481
482 if (size < sizeof(scale))
483 return -ENOMEM;
484 /* USB descriptions contain the dB scale in 1/256 dB unit
485 * while ALSA TLV contains in 1/100 dB unit
486 */
487 scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256;
b8e1c73f 488 scale[3] = (convert_signed_value(cval, cval->max) * 100) / 256;
eedbdf03
TI		 489 if (scale[3] <= scale[2]) {
490 /* something is wrong; assume it's either from/to 0dB */
491 if (scale[2] < 0)
492 scale[3] = 0;
493 else if (scale[2] > 0)
494 scale[2] = 0;
495 else /* totally crap, return an error */
496 return -EINVAL;
497 }
7bc5ba7e
TI		 498 if (copy_to_user(_tlv, scale, sizeof(scale)))
499 return -EFAULT;
500 return 0;
501}
1da177e4
LT		 502
503/*
504 * parser routines begin here...
505 */
506
86e07d34 507static int parse_audio_unit(struct mixer_build *state, int unitid);
1da177e4
LT		 508
509
510/*
511 * check if the input/output channel routing is enabled on the given bitmap.
512 * used for mixer unit parser
513 */
514static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
515{
516 int idx = ich * num_outs + och;
517 return bmap[idx >> 3] & (0x80 >> (idx & 7));
518}
519
520
521/*
522 * add an alsa control element
523 * search and increment the index until an empty slot is found.
524 *
525 * if failed, give up and free the control instance.
526 */
527
86e07d34 528static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl)
1da177e4 529{
86e07d34 530 struct usb_mixer_elem_info *cval = kctl->private_data;
1da177e4 531 int err;
84957a8a
CL		 532
533 while (snd_ctl_find_id(state->chip->card, &kctl->id))
1da177e4 534 kctl->id.index++;
84957a8a 535 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
1da177e4 536 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
6639b6c2 537 return err;
1da177e4 538 }
6639b6c2
CL		 539 cval->elem_id = &kctl->id;
540 cval->next_id_elem = state->mixer->id_elems[cval->id];
541 state->mixer->id_elems[cval->id] = cval;
542 return 0;
1da177e4
LT		 543}
544
545
546/*
547 * get a terminal name string
548 */
549
550static struct iterm_name_combo {
551 int type;
552 char *name;
553} iterm_names[] = {
554 { 0x0300, "Output" },
555 { 0x0301, "Speaker" },
556 { 0x0302, "Headphone" },
557 { 0x0303, "HMD Audio" },
558 { 0x0304, "Desktop Speaker" },
559 { 0x0305, "Room Speaker" },
560 { 0x0306, "Com Speaker" },
561 { 0x0307, "LFE" },
562 { 0x0600, "External In" },
563 { 0x0601, "Analog In" },
564 { 0x0602, "Digital In" },
565 { 0x0603, "Line" },
566 { 0x0604, "Legacy In" },
567 { 0x0605, "IEC958 In" },
568 { 0x0606, "1394 DA Stream" },
569 { 0x0607, "1394 DV Stream" },
570 { 0x0700, "Embedded" },
571 { 0x0701, "Noise Source" },
572 { 0x0702, "Equalization Noise" },
573 { 0x0703, "CD" },
574 { 0x0704, "DAT" },
575 { 0x0705, "DCC" },
576 { 0x0706, "MiniDisk" },
577 { 0x0707, "Analog Tape" },
578 { 0x0708, "Phonograph" },
579 { 0x0709, "VCR Audio" },
580 { 0x070a, "Video Disk Audio" },
581 { 0x070b, "DVD Audio" },
582 { 0x070c, "TV Tuner Audio" },
583 { 0x070d, "Satellite Rec Audio" },
584 { 0x070e, "Cable Tuner Audio" },
585 { 0x070f, "DSS Audio" },
586 { 0x0710, "Radio Receiver" },
587 { 0x0711, "Radio Transmitter" },
588 { 0x0712, "Multi-Track Recorder" },
589 { 0x0713, "Synthesizer" },
590 { 0 },
591};
592
86e07d34 593static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
1da177e4
LT		 594 unsigned char *name, int maxlen, int term_only)
595{
596 struct iterm_name_combo *names;
597
598 if (iterm->name)
599 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
600
601 /* virtual type - not a real terminal */
602 if (iterm->type >> 16) {
603 if (term_only)
604 return 0;
605 switch (iterm->type >> 16) {
606 case SELECTOR_UNIT:
607 strcpy(name, "Selector"); return 8;
608 case PROCESSING_UNIT:
609 strcpy(name, "Process Unit"); return 12;
610 case EXTENSION_UNIT:
611 strcpy(name, "Ext Unit"); return 8;
612 case MIXER_UNIT:
613 strcpy(name, "Mixer"); return 5;
614 default:
615 return sprintf(name, "Unit %d", iterm->id);
616 }
617 }
618
619 switch (iterm->type & 0xff00) {
620 case 0x0100:
621 strcpy(name, "PCM"); return 3;
622 case 0x0200:
623 strcpy(name, "Mic"); return 3;
624 case 0x0400:
625 strcpy(name, "Headset"); return 7;
626 case 0x0500:
627 strcpy(name, "Phone"); return 5;
628 }
629
630 for (names = iterm_names; names->type; names++)
631 if (names->type == iterm->type) {
632 strcpy(name, names->name);
633 return strlen(names->name);
634 }
635 return 0;
636}
637
638
639/*
640 * parse the source unit recursively until it reaches to a terminal
641 * or a branched unit.
642 */
86e07d34 643static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
1da177e4
LT		 644{
645 unsigned char *p1;
646
647 memset(term, 0, sizeof(*term));
648 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
649 term->id = id;
650 switch (p1[2]) {
651 case INPUT_TERMINAL:
652 term->type = combine_word(p1 + 4);
653 term->channels = p1[7];
654 term->chconfig = combine_word(p1 + 8);
655 term->name = p1[11];
656 return 0;
657 case FEATURE_UNIT:
658 id = p1[4];
659 break; /* continue to parse */
660 case MIXER_UNIT:
661 term->type = p1[2] << 16; /* virtual type */
662 term->channels = p1[5 + p1[4]];
663 term->chconfig = combine_word(p1 + 6 + p1[4]);
664 term->name = p1[p1[0] - 1];
665 return 0;
666 case SELECTOR_UNIT:
667 /* call recursively to retrieve the channel info */
668 if (check_input_term(state, p1[5], term) < 0)
669 return -ENODEV;
670 term->type = p1[2] << 16; /* virtual type */
671 term->id = id;
672 term->name = p1[9 + p1[0] - 1];
673 return 0;
674 case PROCESSING_UNIT:
675 case EXTENSION_UNIT:
676 if (p1[6] == 1) {
677 id = p1[7];
678 break; /* continue to parse */
679 }
680 term->type = p1[2] << 16; /* virtual type */
681 term->channels = p1[7 + p1[6]];
682 term->chconfig = combine_word(p1 + 8 + p1[6]);
683 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
684 return 0;
685 default:
686 return -ENODEV;
687 }
688 }
689 return -ENODEV;
690}
691
692
693/*
694 * Feature Unit
695 */
696
697/* feature unit control information */
698struct usb_feature_control_info {
699 const char *name;
700 unsigned int type; /* control type (mute, volume, etc.) */
701};
702
703static struct usb_feature_control_info audio_feature_info[] = {
704 { "Mute", USB_MIXER_INV_BOOLEAN },
705 { "Volume", USB_MIXER_S16 },
706 { "Tone Control - Bass", USB_MIXER_S8 },
707 { "Tone Control - Mid", USB_MIXER_S8 },
708 { "Tone Control - Treble", USB_MIXER_S8 },
709 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
710 { "Auto Gain Control", USB_MIXER_BOOLEAN },
711 { "Delay Control", USB_MIXER_U16 },
712 { "Bass Boost", USB_MIXER_BOOLEAN },
713 { "Loudness", USB_MIXER_BOOLEAN },
714};
715
716
717/* private_free callback */
86e07d34 718static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
1da177e4 719{
4d572776
JJ		 720 kfree(kctl->private_data);
721 kctl->private_data = NULL;
1da177e4
LT		 722}
723
724
725/*
726 * interface to ALSA control for feature/mixer units
727 */
728
729/*
730 * retrieve the minimum and maximum values for the specified control
731 */
86e07d34 732static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
1da177e4
LT		 733{
734 /* for failsafe */
735 cval->min = default_min;
736 cval->max = cval->min + 1;
737 cval->res = 1;
738
739 if (cval->val_type == USB_MIXER_BOOLEAN ||
740 cval->val_type == USB_MIXER_INV_BOOLEAN) {
741 cval->initialized = 1;
742 } else {
743 int minchn = 0;
744 if (cval->cmask) {
745 int i;
746 for (i = 0; i < MAX_CHANNELS; i++)
747 if (cval->cmask & (1 << i)) {
748 minchn = i + 1;
749 break;
750 }
751 }
752 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
753 get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
84957a8a
CL		 754 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
755 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
1da177e4
LT		 756 return -EINVAL;
757 }
758 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
759 cval->res = 1;
760 } else {
761 int last_valid_res = cval->res;
762
763 while (cval->res > 1) {
764 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
765 break;
766 cval->res /= 2;
767 }
768 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
769 cval->res = last_valid_res;
770 }
771 if (cval->res == 0)
772 cval->res = 1;
14790f1c
TI		 773
774 /* Additional checks for the proper resolution
775 *
776 * Some devices report smaller resolutions than actually
777 * reacting. They don't return errors but simply clip
778 * to the lower aligned value.
779 */
780 if (cval->min + cval->res < cval->max) {
781 int last_valid_res = cval->res;
782 int saved, test, check;
641b4879 783 get_cur_mix_raw(cval, minchn, &saved);
14790f1c
TI		 784 for (;;) {
785 test = saved;
786 if (test < cval->max)
787 test += cval->res;
788 else
789 test -= cval->res;
790 if (test < cval->min || test > cval->max ||
641b4879
TI		 791 set_cur_mix_value(cval, minchn, 0, test) ||
792 get_cur_mix_raw(cval, minchn, &check)) {
14790f1c
TI		 793 cval->res = last_valid_res;
794 break;
795 }
796 if (test == check)
797 break;
798 cval->res *= 2;
799 }
641b4879 800 set_cur_mix_value(cval, minchn, 0, saved);
14790f1c
TI		 801 }
802
1da177e4
LT		 803 cval->initialized = 1;
804 }
805 return 0;
806}
807
808
809/* get a feature/mixer unit info */
86e07d34 810static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4 811{
86e07d34 812 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 813
814 if (cval->val_type == USB_MIXER_BOOLEAN ||
815 cval->val_type == USB_MIXER_INV_BOOLEAN)
816 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
817 else
818 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
819 uinfo->count = cval->channels;
820 if (cval->val_type == USB_MIXER_BOOLEAN ||
821 cval->val_type == USB_MIXER_INV_BOOLEAN) {
822 uinfo->value.integer.min = 0;
823 uinfo->value.integer.max = 1;
824 } else {
825 if (! cval->initialized)
826 get_min_max(cval, 0);
827 uinfo->value.integer.min = 0;
14790f1c
TI		 828 uinfo->value.integer.max =
829 (cval->max - cval->min + cval->res - 1) / cval->res;
1da177e4
LT		 830 }
831 return 0;
832}
833
834/* get the current value from feature/mixer unit */
86e07d34 835static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 836{
86e07d34 837 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 838 int c, cnt, val, err;
839
641b4879 840 ucontrol->value.integer.value[0] = cval->min;
1da177e4
LT		 841 if (cval->cmask) {
842 cnt = 0;
843 for (c = 0; c < MAX_CHANNELS; c++) {
641b4879
TI		 844 if (!(cval->cmask & (1 << c)))
845 continue;
846 err = get_cur_mix_value(cval, c + 1, cnt, &val);
847 if (err < 0)
848 return cval->mixer->ignore_ctl_error ? 0 : err;
849 val = get_relative_value(cval, val);
850 ucontrol->value.integer.value[cnt] = val;
851 cnt++;
1da177e4 852 }
641b4879 853 return 0;
1da177e4
LT		 854 } else {
855 /* master channel */
641b4879
TI		 856 err = get_cur_mix_value(cval, 0, 0, &val);
857 if (err < 0)
858 return cval->mixer->ignore_ctl_error ? 0 : err;
1da177e4
LT		 859 val = get_relative_value(cval, val);
860 ucontrol->value.integer.value[0] = val;
861 }
862 return 0;
863}
864
865/* put the current value to feature/mixer unit */
86e07d34 866static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 867{
86e07d34 868 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 869 int c, cnt, val, oval, err;
870 int changed = 0;
871
872 if (cval->cmask) {
873 cnt = 0;
874 for (c = 0; c < MAX_CHANNELS; c++) {
641b4879
TI		 875 if (!(cval->cmask & (1 << c)))
876 continue;
877 err = get_cur_mix_value(cval, c + 1, cnt, &oval);
878 if (err < 0)
879 return cval->mixer->ignore_ctl_error ? 0 : err;
880 val = ucontrol->value.integer.value[cnt];
881 val = get_abs_value(cval, val);
882 if (oval != val) {
883 set_cur_mix_value(cval, c + 1, cnt, val);
884 changed = 1;
1da177e4 885 }
641b4879 886 cnt++;
1da177e4
LT		 887 }
888 } else {
889 /* master channel */
641b4879 890 err = get_cur_mix_value(cval, 0, 0, &oval);
1da177e4 891 if (err < 0)
641b4879 892 return cval->mixer->ignore_ctl_error ? 0 : err;
1da177e4
LT		 893 val = ucontrol->value.integer.value[0];
894 val = get_abs_value(cval, val);
895 if (val != oval) {
641b4879 896 set_cur_mix_value(cval, 0, 0, val);
1da177e4
LT		 897 changed = 1;
898 }
899 }
900 return changed;
901}
902
86e07d34 903static struct snd_kcontrol_new usb_feature_unit_ctl = {
1da177e4
LT		 904 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
905 .name = "", /* will be filled later manually */
906 .info = mixer_ctl_feature_info,
907 .get = mixer_ctl_feature_get,
908 .put = mixer_ctl_feature_put,
909};
910
911
912/*
913 * build a feature control
914 */
915
08d1e635
TI		 916static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
917{
918 return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
919}
920
86e07d34 921static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
1da177e4 922 unsigned int ctl_mask, int control,
86e07d34 923 struct usb_audio_term *iterm, int unitid)
1da177e4
LT		 924{
925 unsigned int len = 0;
926 int mapped_name = 0;
927 int nameid = desc[desc[0] - 1];
86e07d34
TI		 928 struct snd_kcontrol *kctl;
929 struct usb_mixer_elem_info *cval;
1da177e4
LT		 930
931 control++; /* change from zero-based to 1-based value */
932
933 if (control == USB_FEATURE_GEQ) {
934 /* FIXME: not supported yet */
935 return;
936 }
937
938 if (check_ignored_ctl(state, unitid, control))
939 return;
940
561b220a 941 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 942 if (! cval) {
943 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
944 return;
945 }
84957a8a 946 cval->mixer = state->mixer;
1da177e4
LT		 947 cval->id = unitid;
948 cval->control = control;
949 cval->cmask = ctl_mask;
950 cval->val_type = audio_feature_info[control-1].type;
951 if (ctl_mask == 0)
952 cval->channels = 1; /* master channel */
953 else {
954 int i, c = 0;
955 for (i = 0; i < 16; i++)
956 if (ctl_mask & (1 << i))
957 c++;
958 cval->channels = c;
959 }
960
961 /* get min/max values */
962 get_min_max(cval, 0);
963
964 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
965 if (! kctl) {
966 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
967 kfree(cval);
968 return;
969 }
970 kctl->private_free = usb_mixer_elem_free;
971
972 len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
973 mapped_name = len != 0;
974 if (! len && nameid)
975 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
976
977 switch (control) {
978 case USB_FEATURE_MUTE:
979 case USB_FEATURE_VOLUME:
980 /* determine the control name. the rule is:
981 * - if a name id is given in descriptor, use it.
982 * - if the connected input can be determined, then use the name
983 * of terminal type.
984 * - if the connected output can be determined, use it.
985 * - otherwise, anonymous name.
986 */
987 if (! len) {
988 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
989 if (! len)
990 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
991 if (! len)
992 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
993 "Feature %d", unitid);
994 }
995 /* determine the stream direction:
996 * if the connected output is USB stream, then it's likely a
997 * capture stream. otherwise it should be playback (hopefully :)
998 */
999 if (! mapped_name && ! (state->oterm.type >> 16)) {
1000 if ((state->oterm.type & 0xff00) == 0x0100) {
08d1e635 1001 len = append_ctl_name(kctl, " Capture");
1da177e4 1002 } else {
08d1e635 1003 len = append_ctl_name(kctl, " Playback");
1da177e4
LT		 1004 }
1005 }
08d1e635
TI		 1006 append_ctl_name(kctl, control == USB_FEATURE_MUTE ?
1007 " Switch" : " Volume");
7bc5ba7e
TI		 1008 if (control == USB_FEATURE_VOLUME) {
1009 kctl->tlv.c = mixer_vol_tlv;
1010 kctl->vd[0].access |=
1011 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1012 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
1013 }
1da177e4
LT		 1014 break;
1015
1016 default:
1017 if (! len)
1018 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
1019 sizeof(kctl->id.name));
1020 break;
1021 }
1022
2cf313ee 1023 /* volume control quirks */
27d10f56
CL		 1024 switch (state->chip->usb_id) {
1025 case USB_ID(0x0471, 0x0101):
1026 case USB_ID(0x0471, 0x0104):
1027 case USB_ID(0x0471, 0x0105):
1028 case USB_ID(0x0672, 0x1041):
2cf313ee
AF		 1029 /* quirk for UDA1321/N101.
1030 * note that detection between firmware 2.1.1.7 (N101)
1031 * and later 2.1.1.21 is not very clear from datasheets.
1032 * I hope that the min value is -15360 for newer firmware --jk
1033 */
27d10f56
CL		 1034 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
1035 cval->min == -15616) {
2cf313ee
AF		 1036 snd_printk(KERN_INFO
1037 "set volume quirk for UDA1321/N101 chip\n");
27d10f56
CL		 1038 cval->max = -256;
1039 }
2cf313ee
AF		 1040 break;
1041
1042 case USB_ID(0x046d, 0x09a4):
1043 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
1044 snd_printk(KERN_INFO
1045 "set volume quirk for QuickCam E3500\n");
1046 cval->min = 6080;
1047 cval->max = 8768;
1048 cval->res = 192;
1049 }
1050 break;
1051
1da177e4
LT		 1052 }
1053
1054 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1055 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
84957a8a 1056 add_control_to_empty(state, kctl);
1da177e4
LT		 1057}
1058
1059
1060
1061/*
1062 * parse a feature unit
1063 *
1064 * most of controlls are defined here.
1065 */
86e07d34 1066static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsigned char *ftr)
1da177e4
LT		 1067{
1068 int channels, i, j;
86e07d34 1069 struct usb_audio_term iterm;
1da177e4
LT		 1070 unsigned int master_bits, first_ch_bits;
1071 int err, csize;
1072
1073 if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
1074 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
1075 return -EINVAL;
1076 }
1077
1078 /* parse the source unit */
1079 if ((err = parse_audio_unit(state, ftr[4])) < 0)
1080 return err;
1081
1082 /* determine the input source type and name */
1083 if (check_input_term(state, ftr[4], &iterm) < 0)
1084 return -EINVAL;
1085
1086 channels = (ftr[0] - 7) / csize - 1;
1087
1088 master_bits = snd_usb_combine_bytes(ftr + 6, csize);
0c3cee57
JK		 1089 /* master configuration quirks */
1090 switch (state->chip->usb_id) {
1091 case USB_ID(0x08bb, 0x2702):
1092 snd_printk(KERN_INFO
1093 "usbmixer: master volume quirk for PCM2702 chip\n");
1094 /* disable non-functional volume control */
1095 master_bits &= ~(1 << (USB_FEATURE_VOLUME - 1));
1096 break;
1097 }
1da177e4
LT		 1098 if (channels > 0)
1099 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
1100 else
1101 first_ch_bits = 0;
1102 /* check all control types */
1103 for (i = 0; i < 10; i++) {
1104 unsigned int ch_bits = 0;
1105 for (j = 0; j < channels; j++) {
1106 unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize);
1107 if (mask & (1 << i))
1108 ch_bits |= (1 << j);
1109 }
1110 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
1111 build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid);
1112 if (master_bits & (1 << i))
1113 build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
1114 }
1115
1116 return 0;
1117}
1118
1119
1120/*
1121 * Mixer Unit
1122 */
1123
1124/*
1125 * build a mixer unit control
1126 *
1127 * the callbacks are identical with feature unit.
1128 * input channel number (zero based) is given in control field instead.
1129 */
1130
86e07d34 1131static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
1da177e4 1132 int in_pin, int in_ch, int unitid,
86e07d34 1133 struct usb_audio_term *iterm)
1da177e4 1134{
86e07d34 1135 struct usb_mixer_elem_info *cval;
1da177e4
LT		 1136 unsigned int input_pins = desc[4];
1137 unsigned int num_outs = desc[5 + input_pins];
1138 unsigned int i, len;
86e07d34 1139 struct snd_kcontrol *kctl;
1da177e4
LT		 1140
1141 if (check_ignored_ctl(state, unitid, 0))
1142 return;
1143
561b220a 1144 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 1145 if (! cval)
1146 return;
1147
84957a8a 1148 cval->mixer = state->mixer;
1da177e4
LT		 1149 cval->id = unitid;
1150 cval->control = in_ch + 1; /* based on 1 */
1151 cval->val_type = USB_MIXER_S16;
1152 for (i = 0; i < num_outs; i++) {
1153 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1154 cval->cmask |= (1 << i);
1155 cval->channels++;
1156 }
1157 }
1158
1159 /* get min/max values */
1160 get_min_max(cval, 0);
1161
1162 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1163 if (! kctl) {
1164 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1165 kfree(cval);
1166 return;
1167 }
1168 kctl->private_free = usb_mixer_elem_free;
1169
1170 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1171 if (! len)
1172 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1173 if (! len)
1174 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
08d1e635 1175 append_ctl_name(kctl, " Volume");
1da177e4
LT		 1176
1177 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1178 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1179 add_control_to_empty(state, kctl);
1da177e4
LT		 1180}
1181
1182
1183/*
1184 * parse a mixer unit
1185 */
86e07d34 1186static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4 1187{
86e07d34 1188 struct usb_audio_term iterm;
1da177e4
LT		 1189 int input_pins, num_ins, num_outs;
1190 int pin, ich, err;
1191
1192 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1193 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1194 return -EINVAL;
1195 }
1196 /* no bmControls field (e.g. Maya44) -> ignore */
1197 if (desc[0] <= 10 + input_pins) {
1198 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1199 return 0;
1200 }
1201
1202 num_ins = 0;
1203 ich = 0;
1204 for (pin = 0; pin < input_pins; pin++) {
1205 err = parse_audio_unit(state, desc[5 + pin]);
1206 if (err < 0)
1207 return err;
1208 err = check_input_term(state, desc[5 + pin], &iterm);
1209 if (err < 0)
1210 return err;
1211 num_ins += iterm.channels;
1212 for (; ich < num_ins; ++ich) {
1213 int och, ich_has_controls = 0;
1214
1215 for (och = 0; och < num_outs; ++och) {
1216 if (check_matrix_bitmap(desc + 9 + input_pins,
1217 ich, och, num_outs)) {
1218 ich_has_controls = 1;
1219 break;
1220 }
1221 }
1222 if (ich_has_controls)
1223 build_mixer_unit_ctl(state, desc, pin, ich,
1224 unitid, &iterm);
1225 }
1226 }
1227 return 0;
1228}
1229
1230
1231/*
1232 * Processing Unit / Extension Unit
1233 */
1234
1235/* get callback for processing/extension unit */
86e07d34 1236static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1237{
86e07d34 1238 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1239 int err, val;
1240
1241 err = get_cur_ctl_value(cval, cval->control << 8, &val);
84957a8a 1242 if (err < 0 && cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1243 ucontrol->value.integer.value[0] = cval->min;
1244 return 0;
1245 }
1246 if (err < 0)
1247 return err;
1248 val = get_relative_value(cval, val);
1249 ucontrol->value.integer.value[0] = val;
1250 return 0;
1251}
1252
1253/* put callback for processing/extension unit */
86e07d34 1254static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1255{
86e07d34 1256 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1257 int val, oval, err;
1258
1259 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1260 if (err < 0) {
84957a8a 1261 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1262 return 0;
1263 return err;
1264 }
1265 val = ucontrol->value.integer.value[0];
1266 val = get_abs_value(cval, val);
1267 if (val != oval) {
1268 set_cur_ctl_value(cval, cval->control << 8, val);
1269 return 1;
1270 }
1271 return 0;
1272}
1273
1274/* alsa control interface for processing/extension unit */
86e07d34 1275static struct snd_kcontrol_new mixer_procunit_ctl = {
1da177e4
LT		 1276 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1277 .name = "", /* will be filled later */
1278 .info = mixer_ctl_feature_info,
1279 .get = mixer_ctl_procunit_get,
1280 .put = mixer_ctl_procunit_put,
1281};
1282
1283
1284/*
1285 * predefined data for processing units
1286 */
1287struct procunit_value_info {
1288 int control;
1289 char *suffix;
1290 int val_type;
1291 int min_value;
1292};
1293
1294struct procunit_info {
1295 int type;
1296 char *name;
1297 struct procunit_value_info *values;
1298};
1299
1300static struct procunit_value_info updown_proc_info[] = {
1301 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1302 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1303 { 0 }
1304};
1305static struct procunit_value_info prologic_proc_info[] = {
1306 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1307 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1308 { 0 }
1309};
1310static struct procunit_value_info threed_enh_proc_info[] = {
1311 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1312 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1313 { 0 }
1314};
1315static struct procunit_value_info reverb_proc_info[] = {
1316 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1317 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1318 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1319 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1320 { 0 }
1321};
1322static struct procunit_value_info chorus_proc_info[] = {
1323 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1324 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1325 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1326 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1327 { 0 }
1328};
1329static struct procunit_value_info dcr_proc_info[] = {
1330 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1331 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1332 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1333 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1334 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1335 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1336 { 0 }
1337};
1338
1339static struct procunit_info procunits[] = {
1340 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1341 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1342 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1343 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1344 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1345 { USB_PROC_DCR, "DCR", dcr_proc_info },
1346 { 0 },
1347};
7d2b451e
SK		 1348/*
1349 * predefined data for extension units
1350 */
1351static struct procunit_value_info clock_rate_xu_info[] = {
1352 { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 },
1353 { 0 }
1354};
1355static struct procunit_value_info clock_source_xu_info[] = {
1356 { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN },
1357 { 0 }
1358};
1359static struct procunit_value_info spdif_format_xu_info[] = {
1360 { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN },
1361 { 0 }
1362};
1363static struct procunit_value_info soft_limit_xu_info[] = {
1364 { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN },
1365 { 0 }
1366};
1367static struct procunit_info extunits[] = {
1368 { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info },
1369 { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info },
1370 { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info },
1371 { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
1372 { 0 }
1373};
1da177e4
LT		 1374/*
1375 * build a processing/extension unit
1376 */
86e07d34 1377static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1da177e4
LT		 1378{
1379 int num_ins = dsc[6];
86e07d34
TI		 1380 struct usb_mixer_elem_info *cval;
1381 struct snd_kcontrol *kctl;
1da177e4
LT		 1382 int i, err, nameid, type, len;
1383 struct procunit_info *info;
1384 struct procunit_value_info *valinfo;
1385 static struct procunit_value_info default_value_info[] = {
1386 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1387 { 0 }
1388 };
1389 static struct procunit_info default_info = {
1390 0, NULL, default_value_info
1391 };
1392
1393 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1394 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1395 return -EINVAL;
1396 }
1397
1398 for (i = 0; i < num_ins; i++) {
1399 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1400 return err;
1401 }
1402
1403 type = combine_word(&dsc[4]);
1da177e4
LT		 1404 for (info = list; info && info->type; info++)
1405 if (info->type == type)
1406 break;
1407 if (! info || ! info->type)
1408 info = &default_info;
1409
1410 for (valinfo = info->values; valinfo->control; valinfo++) {
1411 /* FIXME: bitmap might be longer than 8bit */
1412 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1413 continue;
1414 if (check_ignored_ctl(state, unitid, valinfo->control))
1415 continue;
561b220a 1416 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 1417 if (! cval) {
1418 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1419 return -ENOMEM;
1420 }
84957a8a 1421 cval->mixer = state->mixer;
1da177e4
LT		 1422 cval->id = unitid;
1423 cval->control = valinfo->control;
1424 cval->val_type = valinfo->val_type;
1425 cval->channels = 1;
1426
1427 /* get min/max values */
1428 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1429 /* FIXME: hard-coded */
1430 cval->min = 1;
1431 cval->max = dsc[15];
1432 cval->res = 1;
1433 cval->initialized = 1;
7d2b451e
SK		 1434 } else {
1435 if (type == USB_XU_CLOCK_RATE) {
1436 /* E-Mu USB 0404/0202/TrackerPre
1437 * samplerate control quirk
1438 */
1439 cval->min = 0;
1440 cval->max = 5;
1441 cval->res = 1;
1442 cval->initialized = 1;
1443 } else
1444 get_min_max(cval, valinfo->min_value);
1445 }
1da177e4
LT		 1446
1447 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1448 if (! kctl) {
1449 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1450 kfree(cval);
1451 return -ENOMEM;
1452 }
1453 kctl->private_free = usb_mixer_elem_free;
1454
1455 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
1456 ;
1457 else if (info->name)
1458 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1459 else {
1460 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1461 len = 0;
1462 if (nameid)
1463 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1464 if (! len)
1465 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1466 }
08d1e635
TI		 1467 append_ctl_name(kctl, " ");
1468 append_ctl_name(kctl, valinfo->suffix);
1da177e4
LT		 1469
1470 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1471 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
84957a8a 1472 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1473 return err;
1474 }
1475 return 0;
1476}
1477
1478
86e07d34 1479static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4
LT		 1480{
1481 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1482}
1483
86e07d34 1484static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4 1485{
7d2b451e 1486 return build_audio_procunit(state, unitid, desc, extunits, "Extension Unit");
1da177e4
LT		 1487}
1488
1489
1490/*
1491 * Selector Unit
1492 */
1493
1494/* info callback for selector unit
1495 * use an enumerator type for routing
1496 */
86e07d34 1497static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4 1498{
86e07d34 1499 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1500 char **itemlist = (char **)kcontrol->private_value;
1501
5e246b85
TI		 1502 if (snd_BUG_ON(!itemlist))
1503 return -EINVAL;
1da177e4
LT		 1504 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1505 uinfo->count = 1;
1506 uinfo->value.enumerated.items = cval->max;
1507 if ((int)uinfo->value.enumerated.item >= cval->max)
1508 uinfo->value.enumerated.item = cval->max - 1;
1509 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1510 return 0;
1511}
1512
1513/* get callback for selector unit */
86e07d34 1514static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1515{
86e07d34 1516 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1517 int val, err;
1518
1519 err = get_cur_ctl_value(cval, 0, &val);
1520 if (err < 0) {
84957a8a 1521 if (cval->mixer->ignore_ctl_error) {
1da177e4
LT		 1522 ucontrol->value.enumerated.item[0] = 0;
1523 return 0;
1524 }
1525 return err;
1526 }
1527 val = get_relative_value(cval, val);
1528 ucontrol->value.enumerated.item[0] = val;
1529 return 0;
1530}
1531
1532/* put callback for selector unit */
86e07d34 1533static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 1534{
86e07d34 1535 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1536 int val, oval, err;
1537
1538 err = get_cur_ctl_value(cval, 0, &oval);
1539 if (err < 0) {
84957a8a 1540 if (cval->mixer->ignore_ctl_error)
1da177e4
LT		 1541 return 0;
1542 return err;
1543 }
1544 val = ucontrol->value.enumerated.item[0];
1545 val = get_abs_value(cval, val);
1546 if (val != oval) {
1547 set_cur_ctl_value(cval, 0, val);
1548 return 1;
1549 }
1550 return 0;
1551}
1552
1553/* alsa control interface for selector unit */
86e07d34 1554static struct snd_kcontrol_new mixer_selectunit_ctl = {
1da177e4
LT		 1555 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1556 .name = "", /* will be filled later */
1557 .info = mixer_ctl_selector_info,
1558 .get = mixer_ctl_selector_get,
1559 .put = mixer_ctl_selector_put,
1560};
1561
1562
1563/* private free callback.
1564 * free both private_data and private_value
1565 */
86e07d34 1566static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1da177e4
LT		 1567{
1568 int i, num_ins = 0;
1569
1570 if (kctl->private_data) {
86e07d34 1571 struct usb_mixer_elem_info *cval = kctl->private_data;
1da177e4
LT		 1572 num_ins = cval->max;
1573 kfree(cval);
1574 kctl->private_data = NULL;
1575 }
1576 if (kctl->private_value) {
1577 char **itemlist = (char **)kctl->private_value;
1578 for (i = 0; i < num_ins; i++)
1579 kfree(itemlist[i]);
1580 kfree(itemlist);
1581 kctl->private_value = 0;
1582 }
1583}
1584
1585/*
1586 * parse a selector unit
1587 */
86e07d34 1588static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1da177e4
LT		 1589{
1590 unsigned int num_ins = desc[4];
1591 unsigned int i, nameid, len;
1592 int err;
86e07d34
TI		 1593 struct usb_mixer_elem_info *cval;
1594 struct snd_kcontrol *kctl;
1da177e4
LT		 1595 char **namelist;
1596
38977e96 1597 if (! num_ins || desc[0] < 5 + num_ins) {
1da177e4
LT		 1598 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1599 return -EINVAL;
1600 }
1601
1602 for (i = 0; i < num_ins; i++) {
1603 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1604 return err;
1605 }
1606
1607 if (num_ins == 1) /* only one ? nonsense! */
1608 return 0;
1609
1610 if (check_ignored_ctl(state, unitid, 0))
1611 return 0;
1612
561b220a 1613 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1da177e4
LT		 1614 if (! cval) {
1615 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1616 return -ENOMEM;
1617 }
84957a8a 1618 cval->mixer = state->mixer;
1da177e4
LT		 1619 cval->id = unitid;
1620 cval->val_type = USB_MIXER_U8;
1621 cval->channels = 1;
1622 cval->min = 1;
1623 cval->max = num_ins;
1624 cval->res = 1;
1625 cval->initialized = 1;
1626
1627 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1628 if (! namelist) {
1629 snd_printk(KERN_ERR "cannot malloc\n");
1630 kfree(cval);
1631 return -ENOMEM;
1632 }
1633#define MAX_ITEM_NAME_LEN 64
1634 for (i = 0; i < num_ins; i++) {
86e07d34 1635 struct usb_audio_term iterm;
1da177e4
LT		 1636 len = 0;
1637 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1638 if (! namelist[i]) {
1639 snd_printk(KERN_ERR "cannot malloc\n");
7fbe3ca5 1640 while (i--)
1da177e4
LT		 1641 kfree(namelist[i]);
1642 kfree(namelist);
1643 kfree(cval);
1644 return -ENOMEM;
1645 }
8e062ec7
CL		 1646 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1647 MAX_ITEM_NAME_LEN);
1648 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1da177e4
LT		 1649 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1650 if (! len)
1651 sprintf(namelist[i], "Input %d", i);
1652 }
1653
1654 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1655 if (! kctl) {
1656 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
878b4789 1657 kfree(namelist);
1da177e4
LT		 1658 kfree(cval);
1659 return -ENOMEM;
1660 }
1661 kctl->private_value = (unsigned long)namelist;
1662 kctl->private_free = usb_mixer_selector_elem_free;
1663
1664 nameid = desc[desc[0] - 1];
1665 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1666 if (len)
1667 ;
1668 else if (nameid)
1669 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1670 else {
1671 len = get_term_name(state, &state->oterm,
1672 kctl->id.name, sizeof(kctl->id.name), 0);
1673 if (! len)
1674 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1675
1676 if ((state->oterm.type & 0xff00) == 0x0100)
08d1e635 1677 append_ctl_name(kctl, " Capture Source");
1da177e4 1678 else
08d1e635 1679 append_ctl_name(kctl, " Playback Source");
1da177e4
LT		 1680 }
1681
1682 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1683 cval->id, kctl->id.name, num_ins);
84957a8a 1684 if ((err = add_control_to_empty(state, kctl)) < 0)
1da177e4
LT		 1685 return err;
1686
1687 return 0;
1688}
1689
1690
1691/*
1692 * parse an audio unit recursively
1693 */
1694
86e07d34 1695static int parse_audio_unit(struct mixer_build *state, int unitid)
1da177e4
LT		 1696{
1697 unsigned char *p1;
1698
1699 if (test_and_set_bit(unitid, state->unitbitmap))
1700 return 0; /* the unit already visited */
1701
1702 p1 = find_audio_control_unit(state, unitid);
1703 if (!p1) {
1704 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1705 return -EINVAL;
1706 }
1707
1708 switch (p1[2]) {
1709 case INPUT_TERMINAL:
1710 return 0; /* NOP */
1711 case MIXER_UNIT:
1712 return parse_audio_mixer_unit(state, unitid, p1);
1713 case SELECTOR_UNIT:
1714 return parse_audio_selector_unit(state, unitid, p1);
1715 case FEATURE_UNIT:
1716 return parse_audio_feature_unit(state, unitid, p1);
1717 case PROCESSING_UNIT:
1718 return parse_audio_processing_unit(state, unitid, p1);
1719 case EXTENSION_UNIT:
1720 return parse_audio_extension_unit(state, unitid, p1);
1721 default:
1722 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1723 return -EINVAL;
1724 }
1725}
1726
84957a8a
CL		 1727static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1728{
6639b6c2
CL		 1729 kfree(mixer->id_elems);
1730 if (mixer->urb) {
1731 kfree(mixer->urb->transfer_buffer);
1732 usb_free_urb(mixer->urb);
1733 }
68df9de1 1734 usb_free_urb(mixer->rc_urb);
b259b10c 1735 kfree(mixer->rc_setup_packet);
84957a8a
CL		 1736 kfree(mixer);
1737}
1738
86e07d34 1739static int snd_usb_mixer_dev_free(struct snd_device *device)
84957a8a
CL		 1740{
1741 struct usb_mixer_interface *mixer = device->device_data;
1742 snd_usb_mixer_free(mixer);
1743 return 0;
1744}
1745
1da177e4
LT		 1746/*
1747 * create mixer controls
1748 *
1749 * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1750 */
84957a8a 1751static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1da177e4
LT		 1752{
1753 unsigned char *desc;
86e07d34 1754 struct mixer_build state;
1da177e4
LT		 1755 int err;
1756 const struct usbmix_ctl_map *map;
84957a8a 1757 struct usb_host_interface *hostif;
1da177e4 1758
84957a8a 1759 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1da177e4 1760 memset(&state, 0, sizeof(state));
84957a8a
CL		 1761 state.chip = mixer->chip;
1762 state.mixer = mixer;
1da177e4
LT		 1763 state.buffer = hostif->extra;
1764 state.buflen = hostif->extralen;
1da177e4
LT		 1765
1766 /* check the mapping table */
27d10f56
CL		 1767 for (map = usbmix_ctl_maps; map->id; map++) {
1768 if (map->id == state.chip->usb_id) {
1da177e4 1769 state.map = map->map;
8e062ec7 1770 state.selector_map = map->selector_map;
84957a8a 1771 mixer->ignore_ctl_error = map->ignore_ctl_error;
1da177e4
LT		 1772 break;
1773 }
1774 }
1da177e4
LT		 1775
1776 desc = NULL;
1777 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
1778 if (desc[0] < 9)
1779 continue; /* invalid descriptor? */
1780 set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */
1781 state.oterm.id = desc[3];
1782 state.oterm.type = combine_word(&desc[4]);
1783 state.oterm.name = desc[8];
1784 err = parse_audio_unit(&state, desc[7]);
1785 if (err < 0)
1786 return err;
1787 }
1788 return 0;
1789}
84957a8a 1790
6639b6c2
CL		 1791static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1792 int unitid)
1793{
86e07d34 1794 struct usb_mixer_elem_info *info;
6639b6c2
CL		 1795
1796 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1797 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1798 info->elem_id);
1799}
1800
b259b10c
CL		 1801static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1802 int unitid)
1803{
4d1a70da 1804 if (!mixer->rc_cfg)
aafad562
CL		 1805 return;
1806 /* unit ids specific to Extigy/Audigy 2 NX: */
1807 switch (unitid) {
1808 case 0: /* remote control */
b259b10c
CL		 1809 mixer->rc_urb->dev = mixer->chip->dev;
1810 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
aafad562
CL		 1811 break;
1812 case 4: /* digital in jack */
1813 case 7: /* line in jacks */
1814 case 19: /* speaker out jacks */
1815 case 20: /* headphones out jack */
1816 break;
69b1f1e8
TB		 1817 /* live24ext: 4 = line-in jack */
1818 case 3: /* hp-out jack (may actuate Mute) */
3195954d
AB		 1819 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1820 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
69b1f1e8
TB		 1821 snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
1822 break;
aafad562
CL		 1823 default:
1824 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
1825 break;
b259b10c
CL		 1826 }
1827}
1828
7d12e780 1829static void snd_usb_mixer_status_complete(struct urb *urb)
6639b6c2
CL		 1830{
1831 struct usb_mixer_interface *mixer = urb->context;
1832
1833 if (urb->status == 0) {
1834 u8 *buf = urb->transfer_buffer;
1835 int i;
1836
1837 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1838 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1839 buf[0], buf[1]);
1840 /* ignore any notifications not from the control interface */
1841 if ((buf[0] & 0x0f) != 0)
1842 continue;
1843 if (!(buf[0] & 0x40))
1844 snd_usb_mixer_notify_id(mixer, buf[1]);
b259b10c
CL		 1845 else
1846 snd_usb_mixer_memory_change(mixer, buf[1]);
6639b6c2
CL		 1847 }
1848 }
1849 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1850 urb->dev = mixer->chip->dev;
1851 usb_submit_urb(urb, GFP_ATOMIC);
1852 }
1853}
1854
1855/* create the handler for the optional status interrupt endpoint */
1856static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1857{
1858 struct usb_host_interface *hostif;
1859 struct usb_endpoint_descriptor *ep;
1860 void *transfer_buffer;
1861 int buffer_length;
1862 unsigned int epnum;
1863
1864 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1865 /* we need one interrupt input endpoint */
1866 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1867 return 0;
1868 ep = get_endpoint(hostif, 0);
913ae5a2 1869 if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
6639b6c2
CL		 1870 return 0;
1871
42a6e66f 1872 epnum = usb_endpoint_num(ep);
6639b6c2
CL		 1873 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1874 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1875 if (!transfer_buffer)
1876 return -ENOMEM;
1877 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1878 if (!mixer->urb) {
1879 kfree(transfer_buffer);
1880 return -ENOMEM;
1881 }
1882 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1883 usb_rcvintpipe(mixer->chip->dev, epnum),
1884 transfer_buffer, buffer_length,
1885 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1886 usb_submit_urb(mixer->urb, GFP_KERNEL);
1887 return 0;
1888}
1889
7d12e780 1890static void snd_usb_soundblaster_remote_complete(struct urb *urb)
b259b10c
CL		 1891{
1892 struct usb_mixer_interface *mixer = urb->context;
4d1a70da 1893 const struct rc_config *rc = mixer->rc_cfg;
b259b10c
CL		 1894 u32 code;
1895
b9c196e1 1896 if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
b259b10c 1897 return;
4d1a70da
RC		 1898
1899 code = mixer->rc_buffer[rc->offset];
1900 if (rc->length == 2)
1901 code |= mixer->rc_buffer[rc->offset + 1] << 8;
1902
b259b10c 1903 /* the Mute button actually changes the mixer control */
4d1a70da
RC		 1904 if (code == rc->mute_code)
1905 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
b259b10c
CL		 1906 mixer->rc_code = code;
1907 wmb();
1908 wake_up(&mixer->rc_waitq);
1909}
1910
86e07d34 1911static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
b259b10c
CL		 1912 long count, loff_t *offset)
1913{
1914 struct usb_mixer_interface *mixer = hw->private_data;
1915 int err;
1916 u32 rc_code;
1917
434b7f56 1918 if (count != 1 && count != 4)
b259b10c
CL		 1919 return -EINVAL;
1920 err = wait_event_interruptible(mixer->rc_waitq,
1921 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1922 if (err == 0) {
434b7f56
CL		 1923 if (count == 1)
1924 err = put_user(rc_code, buf);
1925 else
1926 err = put_user(rc_code, (u32 __user *)buf);
b259b10c
CL		 1927 }
1928 return err < 0 ? err : count;
1929}
1930
86e07d34 1931static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
b259b10c
CL		 1932 poll_table *wait)
1933{
1934 struct usb_mixer_interface *mixer = hw->private_data;
1935
1936 poll_wait(file, &mixer->rc_waitq, wait);
1937 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
1938}
1939
1940static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
1941{
86e07d34 1942 struct snd_hwdep *hwdep;
4d1a70da 1943 int err, len, i;
b259b10c 1944
4d1a70da
RC		 1945 for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
1946 if (rc_configs[i].usb_id == mixer->chip->usb_id)
1947 break;
1948 if (i >= ARRAY_SIZE(rc_configs))
b259b10c 1949 return 0;
4d1a70da 1950 mixer->rc_cfg = &rc_configs[i];
b259b10c 1951
4d1a70da
RC		 1952 len = mixer->rc_cfg->packet_length;
1953
b259b10c
CL		 1954 init_waitqueue_head(&mixer->rc_waitq);
1955 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
1956 if (err < 0)
1957 return err;
1958 snprintf(hwdep->name, sizeof(hwdep->name),
1959 "%s remote control", mixer->chip->card->shortname);
1960 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
1961 hwdep->private_data = mixer;
1962 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
b259b10c 1963 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
28b7e343 1964 hwdep->exclusive = 1;
b259b10c
CL		 1965
1966 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
1967 if (!mixer->rc_urb)
1968 return -ENOMEM;
1969 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
1970 if (!mixer->rc_setup_packet) {
1971 usb_free_urb(mixer->rc_urb);
1972 mixer->rc_urb = NULL;
1973 return -ENOMEM;
1974 }
1975 mixer->rc_setup_packet->bRequestType =
1976 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
1977 mixer->rc_setup_packet->bRequest = GET_MEM;
1978 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
1979 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
1980 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
1981 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
1982 usb_rcvctrlpipe(mixer->chip->dev, 0),
1983 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
1984 snd_usb_soundblaster_remote_complete, mixer);
1985 return 0;
1986}
1987
a5ce8890 1988#define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
93446edc 1989
86e07d34 1990static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
93446edc
CL		 1991{
1992 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1993 int index = kcontrol->private_value;
1994
1995 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
1996 return 0;
1997}
1998
86e07d34 1999static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
93446edc
CL		 2000{
2001 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2002 int index = kcontrol->private_value;
2003 int value = ucontrol->value.integer.value[0];
2004 int err, changed;
2005
2006 if (value > 1)
2007 return -EINVAL;
2008 changed = value != mixer->audigy2nx_leds[index];
2009 err = snd_usb_ctl_msg(mixer->chip->dev,
2010 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
2011 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
2012 value, index + 2, NULL, 0, 100);
2013 if (err < 0)
2014 return err;
2015 mixer->audigy2nx_leds[index] = value;
2016 return changed;
2017}
2018
86e07d34 2019static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
93446edc
CL		 2020 {
2021 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2022 .name = "CMSS LED Switch",
2023 .info = snd_audigy2nx_led_info,
2024 .get = snd_audigy2nx_led_get,
2025 .put = snd_audigy2nx_led_put,
2026 .private_value = 0,
2027 },
2028 {
2029 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2030 .name = "Power LED Switch",
2031 .info = snd_audigy2nx_led_info,
2032 .get = snd_audigy2nx_led_get,
2033 .put = snd_audigy2nx_led_put,
2034 .private_value = 1,
2035 },
2036 {
2037 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2038 .name = "Dolby Digital LED Switch",
2039 .info = snd_audigy2nx_led_info,
2040 .get = snd_audigy2nx_led_get,
2041 .put = snd_audigy2nx_led_put,
2042 .private_value = 2,
2043 },
2044};
2045
2046static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
2047{
2048 int i, err;
2049
2050 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
3195954d
AB		 2051 if (i > 1 && /* Live24ext has 2 LEDs only */
2052 (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2053 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
69b1f1e8 2054 break;
93446edc
CL		 2055 err = snd_ctl_add(mixer->chip->card,
2056 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
2057 if (err < 0)
2058 return err;
2059 }
2060 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
2061 return 0;
2062}
2063
86e07d34
TI		 2064static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
2065 struct snd_info_buffer *buffer)
aafad562 2066{
69b1f1e8 2067 static const struct sb_jack {
aafad562
CL		 2068 int unitid;
2069 const char *name;
69b1f1e8 2070 } jacks_audigy2nx[] = {
aafad562
CL		 2071 {4, "dig in "},
2072 {7, "line in"},
2073 {19, "spk out"},
2074 {20, "hph out"},
69b1f1e8
TB		 2075 {-1, NULL}
2076 }, jacks_live24ext[] = {
2077 {4, "line in"}, /* &1=Line, &2=Mic*/
2078 {3, "hph out"}, /* headphones */
2079 {0, "RC "}, /* last command, 6 bytes see rc_config above */
2080 {-1, NULL}
aafad562 2081 };
69b1f1e8 2082 const struct sb_jack *jacks;
aafad562
CL		 2083 struct usb_mixer_interface *mixer = entry->private_data;
2084 int i, err;
2085 u8 buf[3];
2086
2087 snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
69b1f1e8
TB		 2088 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
2089 jacks = jacks_audigy2nx;
3195954d
AB		 2090 else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2091 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
69b1f1e8
TB		 2092 jacks = jacks_live24ext;
2093 else
2094 return;
2095
2096 for (i = 0; jacks[i].name; ++i) {
aafad562
CL		 2097 snd_iprintf(buffer, "%s: ", jacks[i].name);
2098 err = snd_usb_ctl_msg(mixer->chip->dev,
2099 usb_rcvctrlpipe(mixer->chip->dev, 0),
2100 GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
2101 USB_RECIP_INTERFACE, 0,
2102 jacks[i].unitid << 8, buf, 3, 100);
69b1f1e8 2103 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
aafad562
CL		 2104 snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
2105 else
2106 snd_iprintf(buffer, "?\n");
2107 }
2108}
2109
468b8fde
CL		 2110static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
2111 struct snd_ctl_elem_value *ucontrol)
2112{
2113 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2114
2115 ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
2116 return 0;
2117}
2118
2119static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
2120 struct snd_ctl_elem_value *ucontrol)
2121{
2122 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2123 u8 old_status, new_status;
2124 int err, changed;
2125
2126 old_status = mixer->xonar_u1_status;
2127 if (ucontrol->value.integer.value[0])
2128 new_status = old_status | 0x02;
2129 else
2130 new_status = old_status & ~0x02;
2131 changed = new_status != old_status;
2132 err = snd_usb_ctl_msg(mixer->chip->dev,
2133 usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
2134 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
2135 50, 0, &new_status, 1, 100);
2136 if (err < 0)
2137 return err;
2138 mixer->xonar_u1_status = new_status;
2139 return changed;
2140}
2141
2142static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
2143 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2144 .name = "Digital Playback Switch",
2145 .info = snd_ctl_boolean_mono_info,
2146 .get = snd_xonar_u1_switch_get,
2147 .put = snd_xonar_u1_switch_put,
2148};
2149
2150static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
2151{
2152 int err;
2153
2154 err = snd_ctl_add(mixer->chip->card,
2155 snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
2156 if (err < 0)
2157 return err;
2158 mixer->xonar_u1_status = 0x05;
2159 return 0;
2160}
2161
7d2b451e
SK		 2162void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
2163 unsigned char samplerate_id)
2164{
2165 struct usb_mixer_interface *mixer;
2166 struct usb_mixer_elem_info *cval;
2167 int unitid = 12; /* SamleRate ExtensionUnit ID */
2168
2169 list_for_each_entry(mixer, &chip->mixer_list, list) {
2170 cval = mixer->id_elems[unitid];
2171 if (cval) {
2172 set_cur_ctl_value(cval, cval->control << 8, samplerate_id);
2173 snd_usb_mixer_notify_id(mixer, unitid);
2174 }
2175 break;
2176 }
2177}
2178
7a9b8063
TI		 2179int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
2180 int ignore_error)
84957a8a 2181{
86e07d34 2182 static struct snd_device_ops dev_ops = {
84957a8a
CL		 2183 .dev_free = snd_usb_mixer_dev_free
2184 };
2185 struct usb_mixer_interface *mixer;
2186 int err;
2187
2188 strcpy(chip->card->mixername, "USB Mixer");
2189
561b220a 2190 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
84957a8a
CL		 2191 if (!mixer)
2192 return -ENOMEM;
2193 mixer->chip = chip;
2194 mixer->ctrlif = ctrlif;
7a9b8063 2195 mixer->ignore_ctl_error = ignore_error;
6639b6c2
CL		 2196 mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
2197 if (!mixer->id_elems) {
2198 kfree(mixer);
2199 return -ENOMEM;
2200 }
84957a8a 2201
6639b6c2 2202 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
93446edc
CL		 2203 (err = snd_usb_mixer_status_create(mixer)) < 0)
2204 goto _error;
84957a8a 2205
93446edc
CL		 2206 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
2207 goto _error;
2208
69b1f1e8 2209 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
3195954d
AB		 2210 mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2211 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
86e07d34 2212 struct snd_info_entry *entry;
aafad562 2213
93446edc
CL		 2214 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
2215 goto _error;
aafad562 2216 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
bf850204 2217 snd_info_set_text_ops(entry, mixer,
aafad562 2218 snd_audigy2nx_proc_read);
b259b10c
CL		 2219 }
2220
468b8fde
CL		 2221 if (mixer->chip->usb_id == USB_ID(0x0b05, 0x1739) ||
2222 mixer->chip->usb_id == USB_ID(0x0b05, 0x1743)) {
2223 err = snd_xonar_u1_controls_create(mixer);
2224 if (err < 0)
2225 goto _error;
2226 }
2227
84957a8a 2228 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
93446edc
CL		 2229 if (err < 0)
2230 goto _error;
84957a8a
CL		 2231 list_add(&mixer->list, &chip->mixer_list);
2232 return 0;
93446edc
CL		 2233
2234_error:
2235 snd_usb_mixer_free(mixer);
2236 return err;
84957a8a
CL		 2237}
2238
2239void snd_usb_mixer_disconnect(struct list_head *p)
2240{
6639b6c2
CL		 2241 struct usb_mixer_interface *mixer;
2242
2243 mixer = list_entry(p, struct usb_mixer_interface, list);
68df9de1
MK		 2244 usb_kill_urb(mixer->urb);
2245 usb_kill_urb(mixer->rc_urb);
84957a8a 2246}
kernel source for telekom puls (alcatel/mediatek)