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code style scripts/checkpatch.pl (linux-3.9-rc1) formatting
[linux-2.6.34.14-moxart.git] / sound / usb / usbmixer.c
blob8e8f871b74ca477dc26053b5b0dbf74136d3bdc0
1 /*
2 * (Tentative) USB Audio Driver for ALSA
3 *
4 * Mixer control part
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
11 *
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 */
28
29 #include <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 <linux/usb/audio.h>
36
37 #include <sound/core.h>
38 #include <sound/control.h>
39 #include <sound/hwdep.h>
40 #include <sound/info.h>
41 #include <sound/tlv.h>
42
43 #include "usbaudio.h"
44
45 /*
46 */
47
48 /* ignore error from controls - for debugging */
49 /* #define IGNORE_CTL_ERROR */
50
51 /*
52 * Sound Blaster remote control configuration
53 *
54 * format of remote control data:
55 * Extigy: xx 00
56 * Audigy 2 NX: 06 80 xx 00 00 00
57 * Live! 24-bit: 06 80 xx yy 22 83
58 */
59 static const struct rc_config {
60 u32 usb_id;
61 u8 offset;
62 u8 length;
63 u8 packet_length;
64 u8 min_packet_length; /* minimum accepted length of the URB result */
65 u8 mute_mixer_id;
66 u32 mute_code;
67 } rc_configs[] = {
68 { USB_ID(0x041e, 0x3000), 0, 1, 2, 1, 18, 0x0013 }, /* Extigy */
69 { USB_ID(0x041e, 0x3020), 2, 1, 6, 6, 18, 0x0013 }, /* Audigy 2 NX */
70 { USB_ID(0x041e, 0x3040), 2, 2, 6, 6, 2, 0x6e91 }, /* Live! 24-bit */
71 { USB_ID(0x041e, 0x3048), 2, 2, 6, 6, 2, 0x6e91 }, /* Toshiba SB0500 */
72 };
73
74 #define MAX_ID_ELEMS 256
75
76 struct usb_mixer_interface {
77 struct snd_usb_audio *chip;
78 unsigned int ctrlif;
79 struct list_head list;
80 unsigned int ignore_ctl_error;
81 struct urb *urb;
82 /* array[MAX_ID_ELEMS], indexed by unit id */
83 struct usb_mixer_elem_info **id_elems;
84
85 /* Sound Blaster remote control stuff */
86 const struct rc_config *rc_cfg;
87 u32 rc_code;
88 wait_queue_head_t rc_waitq;
89 struct urb *rc_urb;
90 struct usb_ctrlrequest *rc_setup_packet;
91 u8 rc_buffer[6];
92
93 u8 audigy2nx_leds[3];
94 u8 xonar_u1_status;
95 };
96
97
98 struct usb_audio_term {
99 int id;
100 int type;
101 int channels;
102 unsigned int chconfig;
103 int name;
104 };
105
106 struct usbmix_name_map;
107
108 struct mixer_build {
109 struct snd_usb_audio *chip;
110 struct usb_mixer_interface *mixer;
111 unsigned char *buffer;
112 unsigned int buflen;
113 DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS);
114 struct usb_audio_term oterm;
115 const struct usbmix_name_map *map;
116 const struct usbmix_selector_map *selector_map;
117 };
118
119 #define MAX_CHANNELS 10 /* max logical channels */
120
121 struct usb_mixer_elem_info {
122 struct usb_mixer_interface *mixer;
123 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
124 struct snd_ctl_elem_id *elem_id;
125 unsigned int id;
126 unsigned int control; /* CS or ICN (high byte) */
127 unsigned int cmask; /* channel mask bitmap: 0 = master */
128 int channels;
129 int val_type;
130 int min, max, res;
131 int dBmin, dBmax;
132 int cached;
133 int cache_val[MAX_CHANNELS];
134 u8 initialized;
135 };
136
137
138 enum {
139 USB_FEATURE_NONE = 0,
140 USB_FEATURE_MUTE = 1,
141 USB_FEATURE_VOLUME,
142 USB_FEATURE_BASS,
143 USB_FEATURE_MID,
144 USB_FEATURE_TREBLE,
145 USB_FEATURE_GEQ,
146 USB_FEATURE_AGC,
147 USB_FEATURE_DELAY,
148 USB_FEATURE_BASSBOOST,
149 USB_FEATURE_LOUDNESS
150 };
151
152 enum {
153 USB_MIXER_BOOLEAN,
154 USB_MIXER_INV_BOOLEAN,
155 USB_MIXER_S8,
156 USB_MIXER_U8,
157 USB_MIXER_S16,
158 USB_MIXER_U16,
159 };
160
161 enum {
162 USB_PROC_UPDOWN = 1,
163 USB_PROC_UPDOWN_SWITCH = 1,
164 USB_PROC_UPDOWN_MODE_SEL = 2,
165
166 USB_PROC_PROLOGIC = 2,
167 USB_PROC_PROLOGIC_SWITCH = 1,
168 USB_PROC_PROLOGIC_MODE_SEL = 2,
169
170 USB_PROC_3DENH = 3,
171 USB_PROC_3DENH_SWITCH = 1,
172 USB_PROC_3DENH_SPACE = 2,
173
174 USB_PROC_REVERB = 4,
175 USB_PROC_REVERB_SWITCH = 1,
176 USB_PROC_REVERB_LEVEL = 2,
177 USB_PROC_REVERB_TIME = 3,
178 USB_PROC_REVERB_DELAY = 4,
179
180 USB_PROC_CHORUS = 5,
181 USB_PROC_CHORUS_SWITCH = 1,
182 USB_PROC_CHORUS_LEVEL = 2,
183 USB_PROC_CHORUS_RATE = 3,
184 USB_PROC_CHORUS_DEPTH = 4,
185
186 USB_PROC_DCR = 6,
187 USB_PROC_DCR_SWITCH = 1,
188 USB_PROC_DCR_RATIO = 2,
189 USB_PROC_DCR_MAX_AMP = 3,
190 USB_PROC_DCR_THRESHOLD = 4,
191 USB_PROC_DCR_ATTACK = 5,
192 USB_PROC_DCR_RELEASE = 6,
193 };
194
195 /*E-mu 0202(0404) eXtension Unit(XU) control*/
196 enum {
197 USB_XU_CLOCK_RATE = 0xe301,
198 USB_XU_CLOCK_SOURCE = 0xe302,
199 USB_XU_DIGITAL_IO_STATUS = 0xe303,
200 USB_XU_DEVICE_OPTIONS = 0xe304,
201 USB_XU_DIRECT_MONITORING = 0xe305,
202 USB_XU_METERING = 0xe306
203 };
204 enum {
205 USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/
206 USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */
207 USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */
208 USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */
209 };
210
211 /*
212 * manual mapping of mixer names
213 * if the mixer topology is too complicated and the parsed names are
214 * ambiguous, add the entries in usbmixer_maps.c.
215 */
216 #include "usbmixer_maps.c"
217
218 static const struct usbmix_name_map *
219 find_map(struct mixer_build *state, int unitid, int control)
220 {
221 const struct usbmix_name_map *p = state->map;
222
223 if (!p)
224 return NULL;
225
226 for (p = state->map; p->id; p++) {
227 if (p->id == unitid &&
228 (!control || !p->control || control == p->control))
229 return p;
230 }
231 return NULL;
232 }
233
234 /* get the mapped name if the unit matches */
235 static int
236 check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen)
237 {
238 if (!p || !p->name)
239 return 0;
240
241 buflen--;
242 return strlcpy(buf, p->name, buflen);
243 }
244
245 /* check whether the control should be ignored */
246 static inline int
247 check_ignored_ctl(const struct usbmix_name_map *p)
248 {
249 if (!p || p->name || p->dB)
250 return 0;
251 return 1;
252 }
253
254 /* dB mapping */
255 static inline void check_mapped_dB(const struct usbmix_name_map *p,
256 struct usb_mixer_elem_info *cval)
257 {
258 if (p && p->dB) {
259 cval->dBmin = p->dB->min;
260 cval->dBmax = p->dB->max;
261 }
262 }
263
264 /* get the mapped selector source name */
265 static int check_mapped_selector_name(struct mixer_build *state, int unitid,
266 int index, char *buf, int buflen)
267 {
268 const struct usbmix_selector_map *p;
269
270 if (! state->selector_map)
271 return 0;
272 for (p = state->selector_map; p->id; p++) {
273 if (p->id == unitid && index < p->count)
274 return strlcpy(buf, p->names[index], buflen);
275 }
276 return 0;
277 }
278
279 /*
280 * find an audio control unit with the given unit id
281 */
282 static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
283 {
284 unsigned char *p;
285
286 p = NULL;
287 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
288 USB_DT_CS_INTERFACE)) != NULL) {
289 if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC_EXTENSION_UNIT_V1 && p[3] == unit)
290 return p;
291 }
292 return NULL;
293 }
294
295
296 /*
297 * copy a string with the given id
298 */
299 static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
300 {
301 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
302 buf[len] = 0;
303 return len;
304 }
305
306 /*
307 * convert from the byte/word on usb descriptor to the zero-based integer
308 */
309 static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
310 {
311 switch (cval->val_type) {
312 case USB_MIXER_BOOLEAN:
313 return !!val;
314 case USB_MIXER_INV_BOOLEAN:
315 return !val;
316 case USB_MIXER_U8:
317 val &= 0xff;
318 break;
319 case USB_MIXER_S8:
320 val &= 0xff;
321 if (val >= 0x80)
322 val -= 0x100;
323 break;
324 case USB_MIXER_U16:
325 val &= 0xffff;
326 break;
327 case USB_MIXER_S16:
328 val &= 0xffff;
329 if (val >= 0x8000)
330 val -= 0x10000;
331 break;
332 }
333 return val;
334 }
335
336 /*
337 * convert from the zero-based int to the byte/word for usb descriptor
338 */
339 static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
340 {
341 switch (cval->val_type) {
342 case USB_MIXER_BOOLEAN:
343 return !!val;
344 case USB_MIXER_INV_BOOLEAN:
345 return !val;
346 case USB_MIXER_S8:
347 case USB_MIXER_U8:
348 return val & 0xff;
349 case USB_MIXER_S16:
350 case USB_MIXER_U16:
351 return val & 0xffff;
352 }
353 return 0; /* not reached */
354 }
355
356 static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
357 {
358 if (! cval->res)
359 cval->res = 1;
360 if (val < cval->min)
361 return 0;
362 else if (val >= cval->max)
363 return (cval->max - cval->min + cval->res - 1) / cval->res;
364 else
365 return (val - cval->min) / cval->res;
366 }
367
368 static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
369 {
370 if (val < 0)
371 return cval->min;
372 if (! cval->res)
373 cval->res = 1;
374 val *= cval->res;
375 val += cval->min;
376 if (val > cval->max)
377 return cval->max;
378 return val;
379 }
380
381
382 /*
383 * retrieve a mixer value
384 */
385
386 static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
387 {
388 unsigned char buf[2];
389 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
390 int timeout = 10;
391
392 while (timeout-- > 0) {
393 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
394 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
395 request,
396 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
397 validx, cval->mixer->ctrlif | (cval->id << 8),
398 buf, val_len, 100) >= val_len) {
399 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
400 return 0;
401 }
402 }
403 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
404 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
405 return -EINVAL;
406 }
407
408 static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
409 {
410 return get_ctl_value(cval, UAC_GET_CUR, validx, value);
411 }
412
413 /* channel = 0: master, 1 = first channel */
414 static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
415 int channel, int *value)
416 {
417 return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value);
418 }
419
420 static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
421 int channel, int index, int *value)
422 {
423 int err;
424
425 if (cval->cached & (1 << channel)) {
426 *value = cval->cache_val[index];
427 return 0;
428 }
429 err = get_cur_mix_raw(cval, channel, value);
430 if (err < 0) {
431 if (!cval->mixer->ignore_ctl_error)
432 snd_printd(KERN_ERR "cannot get current value for "
433 "control %d ch %d: err = %d\n",
434 cval->control, channel, err);
435 return err;
436 }
437 cval->cached |= 1 << channel;
438 cval->cache_val[index] = *value;
439 return 0;
440 }
441
442
443 /*
444 * set a mixer value
445 */
446
447 static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
448 {
449 unsigned char buf[2];
450 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
451 int timeout = 10;
452
453 value_set = convert_bytes_value(cval, value_set);
454 buf[0] = value_set & 0xff;
455 buf[1] = (value_set >> 8) & 0xff;
456 while (timeout-- > 0)
457 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
458 usb_sndctrlpipe(cval->mixer->chip->dev, 0),
459 request,
460 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
461 validx, cval->mixer->ctrlif | (cval->id << 8),
462 buf, val_len, 100) >= 0)
463 return 0;
464 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
465 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
466 return -EINVAL;
467 }
468
469 static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
470 {
471 return set_ctl_value(cval, UAC_SET_CUR, validx, value);
472 }
473
474 static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
475 int index, int value)
476 {
477 int err;
478 err = set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel,
479 value);
480 if (err < 0)
481 return err;
482 cval->cached |= 1 << channel;
483 cval->cache_val[index] = value;
484 return 0;
485 }
486
487 /*
488 * TLV callback for mixer volume controls
489 */
490 static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
491 unsigned int size, unsigned int __user *_tlv)
492 {
493 struct usb_mixer_elem_info *cval = kcontrol->private_data;
494 DECLARE_TLV_DB_MINMAX(scale, 0, 0);
495
496 if (size < sizeof(scale))
497 return -ENOMEM;
498 scale[2] = cval->dBmin;
499 scale[3] = cval->dBmax;
500 if (copy_to_user(_tlv, scale, sizeof(scale)))
501 return -EFAULT;
502 return 0;
503 }
504
505 /*
506 * parser routines begin here...
507 */
508
509 static int parse_audio_unit(struct mixer_build *state, int unitid);
510
511
512 /*
513 * check if the input/output channel routing is enabled on the given bitmap.
514 * used for mixer unit parser
515 */
516 static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
517 {
518 int idx = ich * num_outs + och;
519 return bmap[idx >> 3] & (0x80 >> (idx & 7));
520 }
521
522
523 /*
524 * add an alsa control element
525 * search and increment the index until an empty slot is found.
526 *
527 * if failed, give up and free the control instance.
528 */
529
530 static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl)
531 {
532 struct usb_mixer_elem_info *cval = kctl->private_data;
533 int err;
534
535 while (snd_ctl_find_id(state->chip->card, &kctl->id))
536 kctl->id.index++;
537 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
538 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
539 return err;
540 }
541 cval->elem_id = &kctl->id;
542 cval->next_id_elem = state->mixer->id_elems[cval->id];
543 state->mixer->id_elems[cval->id] = cval;
544 return 0;
545 }
546
547
548 /*
549 * get a terminal name string
550 */
551
552 static struct iterm_name_combo {
553 int type;
554 char *name;
555 } iterm_names[] = {
556 { 0x0300, "Output" },
557 { 0x0301, "Speaker" },
558 { 0x0302, "Headphone" },
559 { 0x0303, "HMD Audio" },
560 { 0x0304, "Desktop Speaker" },
561 { 0x0305, "Room Speaker" },
562 { 0x0306, "Com Speaker" },
563 { 0x0307, "LFE" },
564 { 0x0600, "External In" },
565 { 0x0601, "Analog In" },
566 { 0x0602, "Digital In" },
567 { 0x0603, "Line" },
568 { 0x0604, "Legacy In" },
569 { 0x0605, "IEC958 In" },
570 { 0x0606, "1394 DA Stream" },
571 { 0x0607, "1394 DV Stream" },
572 { 0x0700, "Embedded" },
573 { 0x0701, "Noise Source" },
574 { 0x0702, "Equalization Noise" },
575 { 0x0703, "CD" },
576 { 0x0704, "DAT" },
577 { 0x0705, "DCC" },
578 { 0x0706, "MiniDisk" },
579 { 0x0707, "Analog Tape" },
580 { 0x0708, "Phonograph" },
581 { 0x0709, "VCR Audio" },
582 { 0x070a, "Video Disk Audio" },
583 { 0x070b, "DVD Audio" },
584 { 0x070c, "TV Tuner Audio" },
585 { 0x070d, "Satellite Rec Audio" },
586 { 0x070e, "Cable Tuner Audio" },
587 { 0x070f, "DSS Audio" },
588 { 0x0710, "Radio Receiver" },
589 { 0x0711, "Radio Transmitter" },
590 { 0x0712, "Multi-Track Recorder" },
591 { 0x0713, "Synthesizer" },
592 { 0 },
593 };
594
595 static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
596 unsigned char *name, int maxlen, int term_only)
597 {
598 struct iterm_name_combo *names;
599
600 if (iterm->name)
601 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
602
603 /* virtual type - not a real terminal */
604 if (iterm->type >> 16) {
605 if (term_only)
606 return 0;
607 switch (iterm->type >> 16) {
608 case UAC_SELECTOR_UNIT:
609 strcpy(name, "Selector"); return 8;
610 case UAC_PROCESSING_UNIT_V1:
611 strcpy(name, "Process Unit"); return 12;
612 case UAC_EXTENSION_UNIT_V1:
613 strcpy(name, "Ext Unit"); return 8;
614 case UAC_MIXER_UNIT:
615 strcpy(name, "Mixer"); return 5;
616 default:
617 return sprintf(name, "Unit %d", iterm->id);
618 }
619 }
620
621 switch (iterm->type & 0xff00) {
622 case 0x0100:
623 strcpy(name, "PCM"); return 3;
624 case 0x0200:
625 strcpy(name, "Mic"); return 3;
626 case 0x0400:
627 strcpy(name, "Headset"); return 7;
628 case 0x0500:
629 strcpy(name, "Phone"); return 5;
630 }
631
632 for (names = iterm_names; names->type; names++)
633 if (names->type == iterm->type) {
634 strcpy(name, names->name);
635 return strlen(names->name);
636 }
637 return 0;
638 }
639
640
641 /*
642 * parse the source unit recursively until it reaches to a terminal
643 * or a branched unit.
644 */
645 static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
646 {
647 unsigned char *p1;
648
649 memset(term, 0, sizeof(*term));
650 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
651 term->id = id;
652 switch (p1[2]) {
653 case UAC_INPUT_TERMINAL:
654 term->type = combine_word(p1 + 4);
655 term->channels = p1[7];
656 term->chconfig = combine_word(p1 + 8);
657 term->name = p1[11];
658 return 0;
659 case UAC_FEATURE_UNIT:
660 id = p1[4];
661 break; /* continue to parse */
662 case UAC_MIXER_UNIT:
663 term->type = p1[2] << 16; /* virtual type */
664 term->channels = p1[5 + p1[4]];
665 term->chconfig = combine_word(p1 + 6 + p1[4]);
666 term->name = p1[p1[0] - 1];
667 return 0;
668 case UAC_SELECTOR_UNIT:
669 /* call recursively to retrieve the channel info */
670 if (check_input_term(state, p1[5], term) < 0)
671 return -ENODEV;
672 term->type = p1[2] << 16; /* virtual type */
673 term->id = id;
674 term->name = p1[9 + p1[0] - 1];
675 return 0;
676 case UAC_PROCESSING_UNIT_V1:
677 case UAC_EXTENSION_UNIT_V1:
678 if (p1[6] == 1) {
679 id = p1[7];
680 break; /* continue to parse */
681 }
682 term->type = p1[2] << 16; /* virtual type */
683 term->channels = p1[7 + p1[6]];
684 term->chconfig = combine_word(p1 + 8 + p1[6]);
685 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
686 return 0;
687 default:
688 return -ENODEV;
689 }
690 }
691 return -ENODEV;
692 }
693
694
695 /*
696 * Feature Unit
697 */
698
699 /* feature unit control information */
700 struct usb_feature_control_info {
701 const char *name;
702 unsigned int type; /* control type (mute, volume, etc.) */
703 };
704
705 static struct usb_feature_control_info audio_feature_info[] = {
706 { "Mute", USB_MIXER_INV_BOOLEAN },
707 { "Volume", USB_MIXER_S16 },
708 { "Tone Control - Bass", USB_MIXER_S8 },
709 { "Tone Control - Mid", USB_MIXER_S8 },
710 { "Tone Control - Treble", USB_MIXER_S8 },
711 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
712 { "Auto Gain Control", USB_MIXER_BOOLEAN },
713 { "Delay Control", USB_MIXER_U16 },
714 { "Bass Boost", USB_MIXER_BOOLEAN },
715 { "Loudness", USB_MIXER_BOOLEAN },
716 };
717
718
719 /* private_free callback */
720 static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
721 {
722 kfree(kctl->private_data);
723 kctl->private_data = NULL;
724 }
725
726
727 /*
728 * interface to ALSA control for feature/mixer units
729 */
730
731 /*
732 * retrieve the minimum and maximum values for the specified control
733 */
734 static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
735 {
736 /* for failsafe */
737 cval->min = default_min;
738 cval->max = cval->min + 1;
739 cval->res = 1;
740 cval->dBmin = cval->dBmax = 0;
741
742 if (cval->val_type == USB_MIXER_BOOLEAN ||
743 cval->val_type == USB_MIXER_INV_BOOLEAN) {
744 cval->initialized = 1;
745 } else {
746 int minchn = 0;
747 if (cval->cmask) {
748 int i;
749 for (i = 0; i < MAX_CHANNELS; i++)
750 if (cval->cmask & (1 << i)) {
751 minchn = i + 1;
752 break;
753 }
754 }
755 if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
756 get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
757 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
758 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
759 return -EINVAL;
760 }
761 if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
762 cval->res = 1;
763 } else {
764 int last_valid_res = cval->res;
765
766 while (cval->res > 1) {
767 if (set_ctl_value(cval, UAC_SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
768 break;
769 cval->res /= 2;
770 }
771 if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
772 cval->res = last_valid_res;
773 }
774 if (cval->res == 0)
775 cval->res = 1;
776
777 /* Additional checks for the proper resolution
778 *
779 * Some devices report smaller resolutions than actually
780 * reacting. They don't return errors but simply clip
781 * to the lower aligned value.
782 */
783 if (cval->min + cval->res < cval->max) {
784 int last_valid_res = cval->res;
785 int saved, test, check;
786 get_cur_mix_raw(cval, minchn, &saved);
787 for (;;) {
788 test = saved;
789 if (test < cval->max)
790 test += cval->res;
791 else
792 test -= cval->res;
793 if (test < cval->min || test > cval->max ||
794 set_cur_mix_value(cval, minchn, 0, test) ||
795 get_cur_mix_raw(cval, minchn, &check)) {
796 cval->res = last_valid_res;
797 break;
798 }
799 if (test == check)
800 break;
801 cval->res *= 2;
802 }
803 set_cur_mix_value(cval, minchn, 0, saved);
804 }
805
806 cval->initialized = 1;
807 }
808
809 /* USB descriptions contain the dB scale in 1/256 dB unit
810 * while ALSA TLV contains in 1/100 dB unit
811 */
812 cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256;
813 cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256;
814 if (cval->dBmin > cval->dBmax) {
815 /* something is wrong; assume it's either from/to 0dB */
816 if (cval->dBmin < 0)
817 cval->dBmax = 0;
818 else if (cval->dBmin > 0)
819 cval->dBmin = 0;
820 if (cval->dBmin > cval->dBmax) {
821 /* totally crap, return an error */
822 return -EINVAL;
823 }
824 }
825
826 return 0;
827 }
828
829
830 /* get a feature/mixer unit info */
831 static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
832 {
833 struct usb_mixer_elem_info *cval = kcontrol->private_data;
834
835 if (cval->val_type == USB_MIXER_BOOLEAN ||
836 cval->val_type == USB_MIXER_INV_BOOLEAN)
837 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
838 else
839 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
840 uinfo->count = cval->channels;
841 if (cval->val_type == USB_MIXER_BOOLEAN ||
842 cval->val_type == USB_MIXER_INV_BOOLEAN) {
843 uinfo->value.integer.min = 0;
844 uinfo->value.integer.max = 1;
845 } else {
846 if (! cval->initialized)
847 get_min_max(cval, 0);
848 uinfo->value.integer.min = 0;
849 uinfo->value.integer.max =
850 (cval->max - cval->min + cval->res - 1) / cval->res;
851 }
852 return 0;
853 }
854
855 /* get the current value from feature/mixer unit */
856 static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
857 {
858 struct usb_mixer_elem_info *cval = kcontrol->private_data;
859 int c, cnt, val, err;
860
861 ucontrol->value.integer.value[0] = cval->min;
862 if (cval->cmask) {
863 cnt = 0;
864 for (c = 0; c < MAX_CHANNELS; c++) {
865 if (!(cval->cmask & (1 << c)))
866 continue;
867 err = get_cur_mix_value(cval, c + 1, cnt, &val);
868 if (err < 0)
869 return cval->mixer->ignore_ctl_error ? 0 : err;
870 val = get_relative_value(cval, val);
871 ucontrol->value.integer.value[cnt] = val;
872 cnt++;
873 }
874 return 0;
875 } else {
876 /* master channel */
877 err = get_cur_mix_value(cval, 0, 0, &val);
878 if (err < 0)
879 return cval->mixer->ignore_ctl_error ? 0 : err;
880 val = get_relative_value(cval, val);
881 ucontrol->value.integer.value[0] = val;
882 }
883 return 0;
884 }
885
886 /* put the current value to feature/mixer unit */
887 static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
888 {
889 struct usb_mixer_elem_info *cval = kcontrol->private_data;
890 int c, cnt, val, oval, err;
891 int changed = 0;
892
893 if (cval->cmask) {
894 cnt = 0;
895 for (c = 0; c < MAX_CHANNELS; c++) {
896 if (!(cval->cmask & (1 << c)))
897 continue;
898 err = get_cur_mix_value(cval, c + 1, cnt, &oval);
899 if (err < 0)
900 return cval->mixer->ignore_ctl_error ? 0 : err;
901 val = ucontrol->value.integer.value[cnt];
902 val = get_abs_value(cval, val);
903 if (oval != val) {
904 set_cur_mix_value(cval, c + 1, cnt, val);
905 changed = 1;
906 }
907 cnt++;
908 }
909 } else {
910 /* master channel */
911 err = get_cur_mix_value(cval, 0, 0, &oval);
912 if (err < 0)
913 return cval->mixer->ignore_ctl_error ? 0 : err;
914 val = ucontrol->value.integer.value[0];
915 val = get_abs_value(cval, val);
916 if (val != oval) {
917 set_cur_mix_value(cval, 0, 0, val);
918 changed = 1;
919 }
920 }
921 return changed;
922 }
923
924 static struct snd_kcontrol_new usb_feature_unit_ctl = {
925 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
926 .name = "", /* will be filled later manually */
927 .info = mixer_ctl_feature_info,
928 .get = mixer_ctl_feature_get,
929 .put = mixer_ctl_feature_put,
930 };
931
932
933 /*
934 * build a feature control
935 */
936
937 static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
938 {
939 return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
940 }
941
942 static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
943 unsigned int ctl_mask, int control,
944 struct usb_audio_term *iterm, int unitid)
945 {
946 unsigned int len = 0;
947 int mapped_name = 0;
948 int nameid = desc[desc[0] - 1];
949 struct snd_kcontrol *kctl;
950 struct usb_mixer_elem_info *cval;
951 const struct usbmix_name_map *map;
952
953 control++; /* change from zero-based to 1-based value */
954
955 if (control == USB_FEATURE_GEQ) {
956 /* FIXME: not supported yet */
957 return;
958 }
959
960 map = find_map(state, unitid, control);
961 if (check_ignored_ctl(map))
962 return;
963
964 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
965 if (! cval) {
966 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
967 return;
968 }
969 cval->mixer = state->mixer;
970 cval->id = unitid;
971 cval->control = control;
972 cval->cmask = ctl_mask;
973 cval->val_type = audio_feature_info[control-1].type;
974 if (ctl_mask == 0)
975 cval->channels = 1; /* master channel */
976 else {
977 int i, c = 0;
978 for (i = 0; i < 16; i++)
979 if (ctl_mask & (1 << i))
980 c++;
981 cval->channels = c;
982 }
983
984 /* get min/max values */
985 get_min_max(cval, 0);
986
987 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
988 if (! kctl) {
989 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
990 kfree(cval);
991 return;
992 }
993 kctl->private_free = usb_mixer_elem_free;
994
995 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
996 mapped_name = len != 0;
997 if (! len && nameid)
998 len = snd_usb_copy_string_desc(state, nameid,
999 kctl->id.name, sizeof(kctl->id.name));
1000
1001 switch (control) {
1002 case USB_FEATURE_MUTE:
1003 case USB_FEATURE_VOLUME:
1004 /* determine the control name. the rule is:
1005 * - if a name id is given in descriptor, use it.
1006 * - if the connected input can be determined, then use the name
1007 * of terminal type.
1008 * - if the connected output can be determined, use it.
1009 * - otherwise, anonymous name.
1010 */
1011 if (! len) {
1012 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
1013 if (! len)
1014 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
1015 if (! len)
1016 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
1017 "Feature %d", unitid);
1018 }
1019 /* determine the stream direction:
1020 * if the connected output is USB stream, then it's likely a
1021 * capture stream. otherwise it should be playback (hopefully :)
1022 */
1023 if (! mapped_name && ! (state->oterm.type >> 16)) {
1024 if ((state->oterm.type & 0xff00) == 0x0100) {
1025 len = append_ctl_name(kctl, " Capture");
1026 } else {
1027 len = append_ctl_name(kctl, " Playback");
1028 }
1029 }
1030 append_ctl_name(kctl, control == USB_FEATURE_MUTE ?
1031 " Switch" : " Volume");
1032 if (control == USB_FEATURE_VOLUME) {
1033 kctl->tlv.c = mixer_vol_tlv;
1034 kctl->vd[0].access |=
1035 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1036 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
1037 check_mapped_dB(map, cval);
1038 }
1039 break;
1040
1041 default:
1042 if (! len)
1043 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
1044 sizeof(kctl->id.name));
1045 break;
1046 }
1047
1048 /* volume control quirks */
1049 switch (state->chip->usb_id) {
1050 case USB_ID(0x0471, 0x0101):
1051 case USB_ID(0x0471, 0x0104):
1052 case USB_ID(0x0471, 0x0105):
1053 case USB_ID(0x0672, 0x1041):
1054 /* quirk for UDA1321/N101.
1055 * note that detection between firmware 2.1.1.7 (N101)
1056 * and later 2.1.1.21 is not very clear from datasheets.
1057 * I hope that the min value is -15360 for newer firmware --jk
1058 */
1059 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
1060 cval->min == -15616) {
1061 snd_printk(KERN_INFO
1062 "set volume quirk for UDA1321/N101 chip\n");
1063 cval->max = -256;
1064 }
1065 break;
1066
1067 case USB_ID(0x046d, 0x09a4):
1068 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
1069 snd_printk(KERN_INFO
1070 "set volume quirk for QuickCam E3500\n");
1071 cval->min = 6080;
1072 cval->max = 8768;
1073 cval->res = 192;
1074 }
1075 break;
1076
1077 }
1078
1079 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1080 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
1081 add_control_to_empty(state, kctl);
1082 }
1083
1084
1085
1086 /*
1087 * parse a feature unit
1088 *
1089 * most of controlls are defined here.
1090 */
1091 static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr)
1092 {
1093 int channels, i, j;
1094 struct usb_audio_term iterm;
1095 unsigned int master_bits, first_ch_bits;
1096 int err, csize;
1097 struct uac_feature_unit_descriptor *ftr = _ftr;
1098
1099 if (ftr->bLength < 7 || ! (csize = ftr->bControlSize) || ftr->bLength < 7 + csize) {
1100 snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid);
1101 return -EINVAL;
1102 }
1103
1104 /* parse the source unit */
1105 if ((err = parse_audio_unit(state, ftr->bSourceID)) < 0)
1106 return err;
1107
1108 /* determine the input source type and name */
1109 if (check_input_term(state, ftr->bSourceID, &iterm) < 0)
1110 return -EINVAL;
1111
1112 channels = (ftr->bLength - 7) / csize - 1;
1113
1114 master_bits = snd_usb_combine_bytes(ftr->controls, csize);
1115 /* master configuration quirks */
1116 switch (state->chip->usb_id) {
1117 case USB_ID(0x08bb, 0x2702):
1118 snd_printk(KERN_INFO
1119 "usbmixer: master volume quirk for PCM2702 chip\n");
1120 /* disable non-functional volume control */
1121 master_bits &= ~(1 << (USB_FEATURE_VOLUME - 1));
1122 break;
1123 }
1124 if (channels > 0)
1125 first_ch_bits = snd_usb_combine_bytes(ftr->controls + csize, csize);
1126 else
1127 first_ch_bits = 0;
1128 /* check all control types */
1129 for (i = 0; i < 10; i++) {
1130 unsigned int ch_bits = 0;
1131 for (j = 0; j < channels; j++) {
1132 unsigned int mask = snd_usb_combine_bytes(ftr->controls + csize * (j+1), csize);
1133 if (mask & (1 << i))
1134 ch_bits |= (1 << j);
1135 }
1136 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
1137 build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid);
1138 if (master_bits & (1 << i))
1139 build_feature_ctl(state, _ftr, 0, i, &iterm, unitid);
1140 }
1141
1142 return 0;
1143 }
1144
1145
1146 /*
1147 * Mixer Unit
1148 */
1149
1150 /*
1151 * build a mixer unit control
1152 *
1153 * the callbacks are identical with feature unit.
1154 * input channel number (zero based) is given in control field instead.
1155 */
1156
1157 static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
1158 int in_pin, int in_ch, int unitid,
1159 struct usb_audio_term *iterm)
1160 {
1161 struct usb_mixer_elem_info *cval;
1162 unsigned int input_pins = desc[4];
1163 unsigned int num_outs = desc[5 + input_pins];
1164 unsigned int i, len;
1165 struct snd_kcontrol *kctl;
1166 const struct usbmix_name_map *map;
1167
1168 map = find_map(state, unitid, 0);
1169 if (check_ignored_ctl(map))
1170 return;
1171
1172 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1173 if (! cval)
1174 return;
1175
1176 cval->mixer = state->mixer;
1177 cval->id = unitid;
1178 cval->control = in_ch + 1; /* based on 1 */
1179 cval->val_type = USB_MIXER_S16;
1180 for (i = 0; i < num_outs; i++) {
1181 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1182 cval->cmask |= (1 << i);
1183 cval->channels++;
1184 }
1185 }
1186
1187 /* get min/max values */
1188 get_min_max(cval, 0);
1189
1190 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1191 if (! kctl) {
1192 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1193 kfree(cval);
1194 return;
1195 }
1196 kctl->private_free = usb_mixer_elem_free;
1197
1198 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1199 if (! len)
1200 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1201 if (! len)
1202 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1203 append_ctl_name(kctl, " Volume");
1204
1205 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1206 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1207 add_control_to_empty(state, kctl);
1208 }
1209
1210
1211 /*
1212 * parse a mixer unit
1213 */
1214 static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1215 {
1216 struct usb_audio_term iterm;
1217 int input_pins, num_ins, num_outs;
1218 int pin, ich, err;
1219
1220 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1221 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1222 return -EINVAL;
1223 }
1224 /* no bmControls field (e.g. Maya44) -> ignore */
1225 if (desc[0] <= 10 + input_pins) {
1226 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1227 return 0;
1228 }
1229
1230 num_ins = 0;
1231 ich = 0;
1232 for (pin = 0; pin < input_pins; pin++) {
1233 err = parse_audio_unit(state, desc[5 + pin]);
1234 if (err < 0)
1235 return err;
1236 err = check_input_term(state, desc[5 + pin], &iterm);
1237 if (err < 0)
1238 return err;
1239 num_ins += iterm.channels;
1240 for (; ich < num_ins; ++ich) {
1241 int och, ich_has_controls = 0;
1242
1243 for (och = 0; och < num_outs; ++och) {
1244 if (check_matrix_bitmap(desc + 9 + input_pins,
1245 ich, och, num_outs)) {
1246 ich_has_controls = 1;
1247 break;
1248 }
1249 }
1250 if (ich_has_controls)
1251 build_mixer_unit_ctl(state, desc, pin, ich,
1252 unitid, &iterm);
1253 }
1254 }
1255 return 0;
1256 }
1257
1258
1259 /*
1260 * Processing Unit / Extension Unit
1261 */
1262
1263 /* get callback for processing/extension unit */
1264 static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1265 {
1266 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1267 int err, val;
1268
1269 err = get_cur_ctl_value(cval, cval->control << 8, &val);
1270 if (err < 0 && cval->mixer->ignore_ctl_error) {
1271 ucontrol->value.integer.value[0] = cval->min;
1272 return 0;
1273 }
1274 if (err < 0)
1275 return err;
1276 val = get_relative_value(cval, val);
1277 ucontrol->value.integer.value[0] = val;
1278 return 0;
1279 }
1280
1281 /* put callback for processing/extension unit */
1282 static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1283 {
1284 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1285 int val, oval, err;
1286
1287 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1288 if (err < 0) {
1289 if (cval->mixer->ignore_ctl_error)
1290 return 0;
1291 return err;
1292 }
1293 val = ucontrol->value.integer.value[0];
1294 val = get_abs_value(cval, val);
1295 if (val != oval) {
1296 set_cur_ctl_value(cval, cval->control << 8, val);
1297 return 1;
1298 }
1299 return 0;
1300 }
1301
1302 /* alsa control interface for processing/extension unit */
1303 static struct snd_kcontrol_new mixer_procunit_ctl = {
1304 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1305 .name = "", /* will be filled later */
1306 .info = mixer_ctl_feature_info,
1307 .get = mixer_ctl_procunit_get,
1308 .put = mixer_ctl_procunit_put,
1309 };
1310
1311
1312 /*
1313 * predefined data for processing units
1314 */
1315 struct procunit_value_info {
1316 int control;
1317 char *suffix;
1318 int val_type;
1319 int min_value;
1320 };
1321
1322 struct procunit_info {
1323 int type;
1324 char *name;
1325 struct procunit_value_info *values;
1326 };
1327
1328 static struct procunit_value_info updown_proc_info[] = {
1329 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1330 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1331 { 0 }
1332 };
1333 static struct procunit_value_info prologic_proc_info[] = {
1334 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1335 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1336 { 0 }
1337 };
1338 static struct procunit_value_info threed_enh_proc_info[] = {
1339 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1340 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1341 { 0 }
1342 };
1343 static struct procunit_value_info reverb_proc_info[] = {
1344 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1345 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1346 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1347 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1348 { 0 }
1349 };
1350 static struct procunit_value_info chorus_proc_info[] = {
1351 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1352 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1353 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1354 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1355 { 0 }
1356 };
1357 static struct procunit_value_info dcr_proc_info[] = {
1358 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1359 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1360 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1361 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1362 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1363 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1364 { 0 }
1365 };
1366
1367 static struct procunit_info procunits[] = {
1368 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1369 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1370 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1371 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1372 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1373 { USB_PROC_DCR, "DCR", dcr_proc_info },
1374 { 0 },
1375 };
1376 /*
1377 * predefined data for extension units
1378 */
1379 static struct procunit_value_info clock_rate_xu_info[] = {
1380 { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 },
1381 { 0 }
1382 };
1383 static struct procunit_value_info clock_source_xu_info[] = {
1384 { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN },
1385 { 0 }
1386 };
1387 static struct procunit_value_info spdif_format_xu_info[] = {
1388 { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN },
1389 { 0 }
1390 };
1391 static struct procunit_value_info soft_limit_xu_info[] = {
1392 { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN },
1393 { 0 }
1394 };
1395 static struct procunit_info extunits[] = {
1396 { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info },
1397 { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info },
1398 { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info },
1399 { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
1400 { 0 }
1401 };
1402 /*
1403 * build a processing/extension unit
1404 */
1405 static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1406 {
1407 int num_ins = dsc[6];
1408 struct usb_mixer_elem_info *cval;
1409 struct snd_kcontrol *kctl;
1410 int i, err, nameid, type, len;
1411 struct procunit_info *info;
1412 struct procunit_value_info *valinfo;
1413 const struct usbmix_name_map *map;
1414 static struct procunit_value_info default_value_info[] = {
1415 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1416 { 0 }
1417 };
1418 static struct procunit_info default_info = {
1419 0, NULL, default_value_info
1420 };
1421
1422 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1423 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1424 return -EINVAL;
1425 }
1426
1427 for (i = 0; i < num_ins; i++) {
1428 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1429 return err;
1430 }
1431
1432 type = combine_word(&dsc[4]);
1433 for (info = list; info && info->type; info++)
1434 if (info->type == type)
1435 break;
1436 if (! info || ! info->type)
1437 info = &default_info;
1438
1439 for (valinfo = info->values; valinfo->control; valinfo++) {
1440 /* FIXME: bitmap might be longer than 8bit */
1441 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1442 continue;
1443 map = find_map(state, unitid, valinfo->control);
1444 if (check_ignored_ctl(map))
1445 continue;
1446 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1447 if (! cval) {
1448 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1449 return -ENOMEM;
1450 }
1451 cval->mixer = state->mixer;
1452 cval->id = unitid;
1453 cval->control = valinfo->control;
1454 cval->val_type = valinfo->val_type;
1455 cval->channels = 1;
1456
1457 /* get min/max values */
1458 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1459 /* FIXME: hard-coded */
1460 cval->min = 1;
1461 cval->max = dsc[15];
1462 cval->res = 1;
1463 cval->initialized = 1;
1464 } else {
1465 if (type == USB_XU_CLOCK_RATE) {
1466 /* E-Mu USB 0404/0202/TrackerPre
1467 * samplerate control quirk
1468 */
1469 cval->min = 0;
1470 cval->max = 5;
1471 cval->res = 1;
1472 cval->initialized = 1;
1473 } else
1474 get_min_max(cval, valinfo->min_value);
1475 }
1476
1477 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1478 if (! kctl) {
1479 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1480 kfree(cval);
1481 return -ENOMEM;
1482 }
1483 kctl->private_free = usb_mixer_elem_free;
1484
1485 if (check_mapped_name(map, kctl->id.name,
1486 sizeof(kctl->id.name)))
1487 /* nothing */ ;
1488 else if (info->name)
1489 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1490 else {
1491 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1492 len = 0;
1493 if (nameid)
1494 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1495 if (! len)
1496 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1497 }
1498 append_ctl_name(kctl, " ");
1499 append_ctl_name(kctl, valinfo->suffix);
1500
1501 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1502 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1503 if ((err = add_control_to_empty(state, kctl)) < 0)
1504 return err;
1505 }
1506 return 0;
1507 }
1508
1509
1510 static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1511 {
1512 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1513 }
1514
1515 static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1516 {
1517 return build_audio_procunit(state, unitid, desc, extunits, "Extension Unit");
1518 }
1519
1520
1521 /*
1522 * Selector Unit
1523 */
1524
1525 /* info callback for selector unit
1526 * use an enumerator type for routing
1527 */
1528 static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1529 {
1530 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1531 char **itemlist = (char **)kcontrol->private_value;
1532
1533 if (snd_BUG_ON(!itemlist))
1534 return -EINVAL;
1535 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1536 uinfo->count = 1;
1537 uinfo->value.enumerated.items = cval->max;
1538 if ((int)uinfo->value.enumerated.item >= cval->max)
1539 uinfo->value.enumerated.item = cval->max - 1;
1540 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1541 return 0;
1542 }
1543
1544 /* get callback for selector unit */
1545 static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1546 {
1547 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1548 int val, err;
1549
1550 err = get_cur_ctl_value(cval, 0, &val);
1551 if (err < 0) {
1552 if (cval->mixer->ignore_ctl_error) {
1553 ucontrol->value.enumerated.item[0] = 0;
1554 return 0;
1555 }
1556 return err;
1557 }
1558 val = get_relative_value(cval, val);
1559 ucontrol->value.enumerated.item[0] = val;
1560 return 0;
1561 }
1562
1563 /* put callback for selector unit */
1564 static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1565 {
1566 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1567 int val, oval, err;
1568
1569 err = get_cur_ctl_value(cval, 0, &oval);
1570 if (err < 0) {
1571 if (cval->mixer->ignore_ctl_error)
1572 return 0;
1573 return err;
1574 }
1575 val = ucontrol->value.enumerated.item[0];
1576 val = get_abs_value(cval, val);
1577 if (val != oval) {
1578 set_cur_ctl_value(cval, 0, val);
1579 return 1;
1580 }
1581 return 0;
1582 }
1583
1584 /* alsa control interface for selector unit */
1585 static struct snd_kcontrol_new mixer_selectunit_ctl = {
1586 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1587 .name = "", /* will be filled later */
1588 .info = mixer_ctl_selector_info,
1589 .get = mixer_ctl_selector_get,
1590 .put = mixer_ctl_selector_put,
1591 };
1592
1593
1594 /* private free callback.
1595 * free both private_data and private_value
1596 */
1597 static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1598 {
1599 int i, num_ins = 0;
1600
1601 if (kctl->private_data) {
1602 struct usb_mixer_elem_info *cval = kctl->private_data;
1603 num_ins = cval->max;
1604 kfree(cval);
1605 kctl->private_data = NULL;
1606 }
1607 if (kctl->private_value) {
1608 char **itemlist = (char **)kctl->private_value;
1609 for (i = 0; i < num_ins; i++)
1610 kfree(itemlist[i]);
1611 kfree(itemlist);
1612 kctl->private_value = 0;
1613 }
1614 }
1615
1616 /*
1617 * parse a selector unit
1618 */
1619 static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1620 {
1621 unsigned int num_ins = desc[4];
1622 unsigned int i, nameid, len;
1623 int err;
1624 struct usb_mixer_elem_info *cval;
1625 struct snd_kcontrol *kctl;
1626 const struct usbmix_name_map *map;
1627 char **namelist;
1628
1629 if (! num_ins || desc[0] < 5 + num_ins) {
1630 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1631 return -EINVAL;
1632 }
1633
1634 for (i = 0; i < num_ins; i++) {
1635 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1636 return err;
1637 }
1638
1639 if (num_ins == 1) /* only one ? nonsense! */
1640 return 0;
1641
1642 map = find_map(state, unitid, 0);
1643 if (check_ignored_ctl(map))
1644 return 0;
1645
1646 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1647 if (! cval) {
1648 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1649 return -ENOMEM;
1650 }
1651 cval->mixer = state->mixer;
1652 cval->id = unitid;
1653 cval->val_type = USB_MIXER_U8;
1654 cval->channels = 1;
1655 cval->min = 1;
1656 cval->max = num_ins;
1657 cval->res = 1;
1658 cval->initialized = 1;
1659
1660 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1661 if (! namelist) {
1662 snd_printk(KERN_ERR "cannot malloc\n");
1663 kfree(cval);
1664 return -ENOMEM;
1665 }
1666 #define MAX_ITEM_NAME_LEN 64
1667 for (i = 0; i < num_ins; i++) {
1668 struct usb_audio_term iterm;
1669 len = 0;
1670 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1671 if (! namelist[i]) {
1672 snd_printk(KERN_ERR "cannot malloc\n");
1673 while (i--)
1674 kfree(namelist[i]);
1675 kfree(namelist);
1676 kfree(cval);
1677 return -ENOMEM;
1678 }
1679 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1680 MAX_ITEM_NAME_LEN);
1681 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1682 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1683 if (! len)
1684 sprintf(namelist[i], "Input %d", i);
1685 }
1686
1687 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1688 if (! kctl) {
1689 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1690 kfree(namelist);
1691 kfree(cval);
1692 return -ENOMEM;
1693 }
1694 kctl->private_value = (unsigned long)namelist;
1695 kctl->private_free = usb_mixer_selector_elem_free;
1696
1697 nameid = desc[desc[0] - 1];
1698 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1699 if (len)
1700 ;
1701 else if (nameid)
1702 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1703 else {
1704 len = get_term_name(state, &state->oterm,
1705 kctl->id.name, sizeof(kctl->id.name), 0);
1706 if (! len)
1707 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1708
1709 if ((state->oterm.type & 0xff00) == 0x0100)
1710 append_ctl_name(kctl, " Capture Source");
1711 else
1712 append_ctl_name(kctl, " Playback Source");
1713 }
1714
1715 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1716 cval->id, kctl->id.name, num_ins);
1717 if ((err = add_control_to_empty(state, kctl)) < 0)
1718 return err;
1719
1720 return 0;
1721 }
1722
1723
1724 /*
1725 * parse an audio unit recursively
1726 */
1727
1728 static int parse_audio_unit(struct mixer_build *state, int unitid)
1729 {
1730 unsigned char *p1;
1731
1732 if (test_and_set_bit(unitid, state->unitbitmap))
1733 return 0; /* the unit already visited */
1734
1735 p1 = find_audio_control_unit(state, unitid);
1736 if (!p1) {
1737 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1738 return -EINVAL;
1739 }
1740
1741 switch (p1[2]) {
1742 case UAC_INPUT_TERMINAL:
1743 return 0; /* NOP */
1744 case UAC_MIXER_UNIT:
1745 return parse_audio_mixer_unit(state, unitid, p1);
1746 case UAC_SELECTOR_UNIT:
1747 return parse_audio_selector_unit(state, unitid, p1);
1748 case UAC_FEATURE_UNIT:
1749 return parse_audio_feature_unit(state, unitid, p1);
1750 case UAC_PROCESSING_UNIT_V1:
1751 return parse_audio_processing_unit(state, unitid, p1);
1752 case UAC_EXTENSION_UNIT_V1:
1753 return parse_audio_extension_unit(state, unitid, p1);
1754 default:
1755 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1756 return -EINVAL;
1757 }
1758 }
1759
1760 static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1761 {
1762 kfree(mixer->id_elems);
1763 if (mixer->urb) {
1764 kfree(mixer->urb->transfer_buffer);
1765 usb_free_urb(mixer->urb);
1766 }
1767 usb_free_urb(mixer->rc_urb);
1768 kfree(mixer->rc_setup_packet);
1769 kfree(mixer);
1770 }
1771
1772 static int snd_usb_mixer_dev_free(struct snd_device *device)
1773 {
1774 struct usb_mixer_interface *mixer = device->device_data;
1775 snd_usb_mixer_free(mixer);
1776 return 0;
1777 }
1778
1779 /*
1780 * create mixer controls
1781 *
1782 * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers
1783 */
1784 static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1785 {
1786 struct uac_output_terminal_descriptor_v1 *desc;
1787 struct mixer_build state;
1788 int err;
1789 const struct usbmix_ctl_map *map;
1790 struct usb_host_interface *hostif;
1791
1792 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1793 memset(&state, 0, sizeof(state));
1794 state.chip = mixer->chip;
1795 state.mixer = mixer;
1796 state.buffer = hostif->extra;
1797 state.buflen = hostif->extralen;
1798
1799 /* check the mapping table */
1800 for (map = usbmix_ctl_maps; map->id; map++) {
1801 if (map->id == state.chip->usb_id) {
1802 state.map = map->map;
1803 state.selector_map = map->selector_map;
1804 mixer->ignore_ctl_error = map->ignore_ctl_error;
1805 break;
1806 }
1807 }
1808
1809 desc = NULL;
1810 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, UAC_OUTPUT_TERMINAL)) != NULL) {
1811 if (desc->bLength < 9)
1812 continue; /* invalid descriptor? */
1813 set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
1814 state.oterm.id = desc->bTerminalID;
1815 state.oterm.type = le16_to_cpu(desc->wTerminalType);
1816 state.oterm.name = desc->iTerminal;
1817 err = parse_audio_unit(&state, desc->bSourceID);
1818 if (err < 0)
1819 return err;
1820 }
1821 return 0;
1822 }
1823
1824 static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1825 int unitid)
1826 {
1827 struct usb_mixer_elem_info *info;
1828
1829 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1830 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1831 info->elem_id);
1832 }
1833
1834 static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
1835 int unitid,
1836 struct usb_mixer_elem_info *cval)
1837 {
1838 static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN",
1839 "S8", "U8", "S16", "U16"};
1840 snd_iprintf(buffer, " Unit: %i\n", unitid);
1841 if (cval->elem_id)
1842 snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n",
1843 cval->elem_id->name, cval->elem_id->index);
1844 snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, "
1845 "channels=%i, type=\"%s\"\n", cval->id,
1846 cval->control, cval->cmask, cval->channels,
1847 val_types[cval->val_type]);
1848 snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n",
1849 cval->min, cval->max, cval->dBmin, cval->dBmax);
1850 }
1851
1852 static void snd_usb_mixer_proc_read(struct snd_info_entry *entry,
1853 struct snd_info_buffer *buffer)
1854 {
1855 struct snd_usb_audio *chip = entry->private_data;
1856 struct usb_mixer_interface *mixer;
1857 struct usb_mixer_elem_info *cval;
1858 int unitid;
1859
1860 list_for_each_entry(mixer, &chip->mixer_list, list) {
1861 snd_iprintf(buffer,
1862 "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n",
1863 chip->usb_id, mixer->ctrlif,
1864 mixer->ignore_ctl_error);
1865 snd_iprintf(buffer, "Card: %s\n", chip->card->longname);
1866 for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) {
1867 for (cval = mixer->id_elems[unitid]; cval;
1868 cval = cval->next_id_elem)
1869 snd_usb_mixer_dump_cval(buffer, unitid, cval);
1870 }
1871 }
1872 }
1873
1874 static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1875 int unitid)
1876 {
1877 if (!mixer->rc_cfg)
1878 return;
1879 /* unit ids specific to Extigy/Audigy 2 NX: */
1880 switch (unitid) {
1881 case 0: /* remote control */
1882 mixer->rc_urb->dev = mixer->chip->dev;
1883 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1884 break;
1885 case 4: /* digital in jack */
1886 case 7: /* line in jacks */
1887 case 19: /* speaker out jacks */
1888 case 20: /* headphones out jack */
1889 break;
1890 /* live24ext: 4 = line-in jack */
1891 case 3: /* hp-out jack (may actuate Mute) */
1892 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1893 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
1894 snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
1895 break;
1896 default:
1897 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
1898 break;
1899 }
1900 }
1901
1902 static void snd_usb_mixer_status_complete(struct urb *urb)
1903 {
1904 struct usb_mixer_interface *mixer = urb->context;
1905
1906 if (urb->status == 0) {
1907 u8 *buf = urb->transfer_buffer;
1908 int i;
1909
1910 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1911 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1912 buf[0], buf[1]);
1913 /* ignore any notifications not from the control interface */
1914 if ((buf[0] & 0x0f) != 0)
1915 continue;
1916 if (!(buf[0] & 0x40))
1917 snd_usb_mixer_notify_id(mixer, buf[1]);
1918 else
1919 snd_usb_mixer_memory_change(mixer, buf[1]);
1920 }
1921 }
1922 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1923 urb->dev = mixer->chip->dev;
1924 usb_submit_urb(urb, GFP_ATOMIC);
1925 }
1926 }
1927
1928 /* create the handler for the optional status interrupt endpoint */
1929 static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1930 {
1931 struct usb_host_interface *hostif;
1932 struct usb_endpoint_descriptor *ep;
1933 void *transfer_buffer;
1934 int buffer_length;
1935 unsigned int epnum;
1936
1937 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1938 /* we need one interrupt input endpoint */
1939 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1940 return 0;
1941 ep = get_endpoint(hostif, 0);
1942 if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
1943 return 0;
1944
1945 epnum = usb_endpoint_num(ep);
1946 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1947 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1948 if (!transfer_buffer)
1949 return -ENOMEM;
1950 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1951 if (!mixer->urb) {
1952 kfree(transfer_buffer);
1953 return -ENOMEM;
1954 }
1955 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1956 usb_rcvintpipe(mixer->chip->dev, epnum),
1957 transfer_buffer, buffer_length,
1958 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1959 usb_submit_urb(mixer->urb, GFP_KERNEL);
1960 return 0;
1961 }
1962
1963 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
1964 {
1965 struct usb_mixer_interface *mixer = urb->context;
1966 const struct rc_config *rc = mixer->rc_cfg;
1967 u32 code;
1968
1969 if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
1970 return;
1971
1972 code = mixer->rc_buffer[rc->offset];
1973 if (rc->length == 2)
1974 code |= mixer->rc_buffer[rc->offset + 1] << 8;
1975
1976 /* the Mute button actually changes the mixer control */
1977 if (code == rc->mute_code)
1978 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
1979 mixer->rc_code = code;
1980 wmb();
1981 wake_up(&mixer->rc_waitq);
1982 }
1983
1984 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
1985 long count, loff_t *offset)
1986 {
1987 struct usb_mixer_interface *mixer = hw->private_data;
1988 int err;
1989 u32 rc_code;
1990
1991 if (count != 1 && count != 4)
1992 return -EINVAL;
1993 err = wait_event_interruptible(mixer->rc_waitq,
1994 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1995 if (err == 0) {
1996 if (count == 1)
1997 err = put_user(rc_code, buf);
1998 else
1999 err = put_user(rc_code, (u32 __user *)buf);
2000 }
2001 return err < 0 ? err : count;
2002 }
2003
2004 static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
2005 poll_table *wait)
2006 {
2007 struct usb_mixer_interface *mixer = hw->private_data;
2008
2009 poll_wait(file, &mixer->rc_waitq, wait);
2010 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
2011 }
2012
2013 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
2014 {
2015 struct snd_hwdep *hwdep;
2016 int err, len, i;
2017
2018 for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
2019 if (rc_configs[i].usb_id == mixer->chip->usb_id)
2020 break;
2021 if (i >= ARRAY_SIZE(rc_configs))
2022 return 0;
2023 mixer->rc_cfg = &rc_configs[i];
2024
2025 len = mixer->rc_cfg->packet_length;
2026
2027 init_waitqueue_head(&mixer->rc_waitq);
2028 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
2029 if (err < 0)
2030 return err;
2031 snprintf(hwdep->name, sizeof(hwdep->name),
2032 "%s remote control", mixer->chip->card->shortname);
2033 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
2034 hwdep->private_data = mixer;
2035 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
2036 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
2037 hwdep->exclusive = 1;
2038
2039 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
2040 if (!mixer->rc_urb)
2041 return -ENOMEM;
2042 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
2043 if (!mixer->rc_setup_packet) {
2044 usb_free_urb(mixer->rc_urb);
2045 mixer->rc_urb = NULL;
2046 return -ENOMEM;
2047 }
2048 mixer->rc_setup_packet->bRequestType =
2049 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
2050 mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
2051 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
2052 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
2053 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
2054 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
2055 usb_rcvctrlpipe(mixer->chip->dev, 0),
2056 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
2057 snd_usb_soundblaster_remote_complete, mixer);
2058 return 0;
2059 }
2060
2061 #define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
2062
2063 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2064 {
2065 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2066 int index = kcontrol->private_value;
2067
2068 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
2069 return 0;
2070 }
2071
2072 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2073 {
2074 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2075 int index = kcontrol->private_value;
2076 int value = ucontrol->value.integer.value[0];
2077 int err, changed;
2078
2079 if (value > 1)
2080 return -EINVAL;
2081 changed = value != mixer->audigy2nx_leds[index];
2082 err = snd_usb_ctl_msg(mixer->chip->dev,
2083 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
2084 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
2085 value, index + 2, NULL, 0, 100);
2086 if (err < 0)
2087 return err;
2088 mixer->audigy2nx_leds[index] = value;
2089 return changed;
2090 }
2091
2092 static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
2093 {
2094 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2095 .name = "CMSS LED Switch",
2096 .info = snd_audigy2nx_led_info,
2097 .get = snd_audigy2nx_led_get,
2098 .put = snd_audigy2nx_led_put,
2099 .private_value = 0,
2100 },
2101 {
2102 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2103 .name = "Power LED Switch",
2104 .info = snd_audigy2nx_led_info,
2105 .get = snd_audigy2nx_led_get,
2106 .put = snd_audigy2nx_led_put,
2107 .private_value = 1,
2108 },
2109 {
2110 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2111 .name = "Dolby Digital LED Switch",
2112 .info = snd_audigy2nx_led_info,
2113 .get = snd_audigy2nx_led_get,
2114 .put = snd_audigy2nx_led_put,
2115 .private_value = 2,
2116 },
2117 };
2118
2119 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
2120 {
2121 int i, err;
2122
2123 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
2124 if (i > 1 && /* Live24ext has 2 LEDs only */
2125 (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2126 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
2127 break;
2128 err = snd_ctl_add(mixer->chip->card,
2129 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
2130 if (err < 0)
2131 return err;
2132 }
2133 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
2134 return 0;
2135 }
2136
2137 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
2138 struct snd_info_buffer *buffer)
2139 {
2140 static const struct sb_jack {
2141 int unitid;
2142 const char *name;
2143 } jacks_audigy2nx[] = {
2144 {4, "dig in "},
2145 {7, "line in"},
2146 {19, "spk out"},
2147 {20, "hph out"},
2148 {-1, NULL}
2149 }, jacks_live24ext[] = {
2150 {4, "line in"}, /* &1=Line, &2=Mic*/
2151 {3, "hph out"}, /* headphones */
2152 {0, "RC "}, /* last command, 6 bytes see rc_config above */
2153 {-1, NULL}
2154 };
2155 const struct sb_jack *jacks;
2156 struct usb_mixer_interface *mixer = entry->private_data;
2157 int i, err;
2158 u8 buf[3];
2159
2160 snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
2161 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
2162 jacks = jacks_audigy2nx;
2163 else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2164 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
2165 jacks = jacks_live24ext;
2166 else
2167 return;
2168
2169 for (i = 0; jacks[i].name; ++i) {
2170 snd_iprintf(buffer, "%s: ", jacks[i].name);
2171 err = snd_usb_ctl_msg(mixer->chip->dev,
2172 usb_rcvctrlpipe(mixer->chip->dev, 0),
2173 UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
2174 USB_RECIP_INTERFACE, 0,
2175 jacks[i].unitid << 8, buf, 3, 100);
2176 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
2177 snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
2178 else
2179 snd_iprintf(buffer, "?\n");
2180 }
2181 }
2182
2183 static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
2184 struct snd_ctl_elem_value *ucontrol)
2185 {
2186 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2187
2188 ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02);
2189 return 0;
2190 }
2191
2192 static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
2193 struct snd_ctl_elem_value *ucontrol)
2194 {
2195 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
2196 u8 old_status, new_status;
2197 int err, changed;
2198
2199 old_status = mixer->xonar_u1_status;
2200 if (ucontrol->value.integer.value[0])
2201 new_status = old_status | 0x02;
2202 else
2203 new_status = old_status & ~0x02;
2204 changed = new_status != old_status;
2205 err = snd_usb_ctl_msg(mixer->chip->dev,
2206 usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
2207 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
2208 50, 0, &new_status, 1, 100);
2209 if (err < 0)
2210 return err;
2211 mixer->xonar_u1_status = new_status;
2212 return changed;
2213 }
2214
2215 static struct snd_kcontrol_new snd_xonar_u1_output_switch = {
2216 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2217 .name = "Digital Playback Switch",
2218 .info = snd_ctl_boolean_mono_info,
2219 .get = snd_xonar_u1_switch_get,
2220 .put = snd_xonar_u1_switch_put,
2221 };
2222
2223 static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
2224 {
2225 int err;
2226
2227 err = snd_ctl_add(mixer->chip->card,
2228 snd_ctl_new1(&snd_xonar_u1_output_switch, mixer));
2229 if (err < 0)
2230 return err;
2231 mixer->xonar_u1_status = 0x05;
2232 return 0;
2233 }
2234
2235 void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
2236 unsigned char samplerate_id)
2237 {
2238 struct usb_mixer_interface *mixer;
2239 struct usb_mixer_elem_info *cval;
2240 int unitid = 12; /* SamleRate ExtensionUnit ID */
2241
2242 list_for_each_entry(mixer, &chip->mixer_list, list) {
2243 cval = mixer->id_elems[unitid];
2244 if (cval) {
2245 set_cur_ctl_value(cval, cval->control << 8,
2246 samplerate_id);
2247 snd_usb_mixer_notify_id(mixer, unitid);
2248 }
2249 break;
2250 }
2251 }
2252
2253 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
2254 int ignore_error)
2255 {
2256 static struct snd_device_ops dev_ops = {
2257 .dev_free = snd_usb_mixer_dev_free
2258 };
2259 struct usb_mixer_interface *mixer;
2260 struct snd_info_entry *entry;
2261 struct usb_host_interface *host_iface;
2262 int err, protocol;
2263
2264 strcpy(chip->card->mixername, "USB Mixer");
2265
2266 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
2267 if (!mixer)
2268 return -ENOMEM;
2269 mixer->chip = chip;
2270 mixer->ctrlif = ctrlif;
2271 mixer->ignore_ctl_error = ignore_error;
2272 mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems),
2273 GFP_KERNEL);
2274 if (!mixer->id_elems) {
2275 kfree(mixer);
2276 return -ENOMEM;
2277 }
2278
2279 host_iface = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
2280 protocol = host_iface->desc.bInterfaceProtocol;
2281
2282 /* FIXME! */
2283 if (protocol != UAC_VERSION_1) {
2284 snd_printk(KERN_WARNING "mixer interface protocol 0x%02x not yet supported\n",
2285 protocol);
2286 return 0;
2287 }
2288
2289 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
2290 (err = snd_usb_mixer_status_create(mixer)) < 0)
2291 goto _error;
2292
2293 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
2294 goto _error;
2295
2296 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
2297 mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2298 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
2299 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
2300 goto _error;
2301 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
2302 snd_info_set_text_ops(entry, mixer,
2303 snd_audigy2nx_proc_read);
2304 }
2305
2306 if (mixer->chip->usb_id == USB_ID(0x0b05, 0x1739) ||
2307 mixer->chip->usb_id == USB_ID(0x0b05, 0x1743)) {
2308 err = snd_xonar_u1_controls_create(mixer);
2309 if (err < 0)
2310 goto _error;
2311 }
2312
2313 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
2314 if (err < 0)
2315 goto _error;
2316
2317 if (list_empty(&chip->mixer_list) &&
2318 !snd_card_proc_new(chip->card, "usbmixer", &entry))
2319 snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read);
2320
2321 list_add(&mixer->list, &chip->mixer_list);
2322 return 0;
2323
2324 _error:
2325 snd_usb_mixer_free(mixer);
2326 return err;
2327 }
2328
2329 void snd_usb_mixer_disconnect(struct list_head *p)
2330 {
2331 struct usb_mixer_interface *mixer;
2332
2333 mixer = list_entry(p, struct usb_mixer_interface, list);
2334 usb_kill_urb(mixer->urb);
2335 usb_kill_urb(mixer->rc_urb);
2336 }
Linux ARM platform port for MOXA ART SoC