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virtio_blk: don't bounce highmem requests
[linux-2.6/mini2440.git] / sound / usb / usbmixer.c
blobecb58e7a6245f5bea88294093628a23c54744643
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 <sound/core.h>
36 #include <sound/control.h>
37 #include <sound/hwdep.h>
38 #include <sound/info.h>
39 #include <sound/tlv.h>
40
41 #include "usbaudio.h"
42
43 /*
44 */
45
46 /* ignore error from controls - for debugging */
47 /* #define IGNORE_CTL_ERROR */
48
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 */
57 static const struct rc_config {
58 u32 usb_id;
59 u8 offset;
60 u8 length;
61 u8 packet_length;
62 u8 min_packet_length; /* minimum accepted length of the URB result */
63 u8 mute_mixer_id;
64 u32 mute_code;
65 } rc_configs[] = {
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 */
69 { USB_ID(0x041e, 0x3048), 2, 2, 6, 6, 2, 0x6e91 }, /* Toshiba SB0500 */
70 };
71
72 struct usb_mixer_interface {
73 struct snd_usb_audio *chip;
74 unsigned int ctrlif;
75 struct list_head list;
76 unsigned int ignore_ctl_error;
77 struct urb *urb;
78 struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */
79
80 /* Sound Blaster remote control stuff */
81 const struct rc_config *rc_cfg;
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];
87
88 u8 audigy2nx_leds[3];
89 };
90
91
92 struct usb_audio_term {
93 int id;
94 int type;
95 int channels;
96 unsigned int chconfig;
97 int name;
98 };
99
100 struct usbmix_name_map;
101
102 struct mixer_build {
103 struct snd_usb_audio *chip;
104 struct usb_mixer_interface *mixer;
105 unsigned char *buffer;
106 unsigned int buflen;
107 DECLARE_BITMAP(unitbitmap, 256);
108 struct usb_audio_term oterm;
109 const struct usbmix_name_map *map;
110 const struct usbmix_selector_map *selector_map;
111 };
112
113 #define MAX_CHANNELS 10 /* max logical channels */
114
115 struct usb_mixer_elem_info {
116 struct usb_mixer_interface *mixer;
117 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
118 struct snd_ctl_elem_id *elem_id;
119 unsigned int id;
120 unsigned int control; /* CS or ICN (high byte) */
121 unsigned int cmask; /* channel mask bitmap: 0 = master */
122 int channels;
123 int val_type;
124 int min, max, res;
125 int cached;
126 int cache_val[MAX_CHANNELS];
127 u8 initialized;
128 };
129
130
131 enum {
132 USB_FEATURE_NONE = 0,
133 USB_FEATURE_MUTE = 1,
134 USB_FEATURE_VOLUME,
135 USB_FEATURE_BASS,
136 USB_FEATURE_MID,
137 USB_FEATURE_TREBLE,
138 USB_FEATURE_GEQ,
139 USB_FEATURE_AGC,
140 USB_FEATURE_DELAY,
141 USB_FEATURE_BASSBOOST,
142 USB_FEATURE_LOUDNESS
143 };
144
145 enum {
146 USB_MIXER_BOOLEAN,
147 USB_MIXER_INV_BOOLEAN,
148 USB_MIXER_S8,
149 USB_MIXER_U8,
150 USB_MIXER_S16,
151 USB_MIXER_U16,
152 };
153
154 enum {
155 USB_PROC_UPDOWN = 1,
156 USB_PROC_UPDOWN_SWITCH = 1,
157 USB_PROC_UPDOWN_MODE_SEL = 2,
158
159 USB_PROC_PROLOGIC = 2,
160 USB_PROC_PROLOGIC_SWITCH = 1,
161 USB_PROC_PROLOGIC_MODE_SEL = 2,
162
163 USB_PROC_3DENH = 3,
164 USB_PROC_3DENH_SWITCH = 1,
165 USB_PROC_3DENH_SPACE = 2,
166
167 USB_PROC_REVERB = 4,
168 USB_PROC_REVERB_SWITCH = 1,
169 USB_PROC_REVERB_LEVEL = 2,
170 USB_PROC_REVERB_TIME = 3,
171 USB_PROC_REVERB_DELAY = 4,
172
173 USB_PROC_CHORUS = 5,
174 USB_PROC_CHORUS_SWITCH = 1,
175 USB_PROC_CHORUS_LEVEL = 2,
176 USB_PROC_CHORUS_RATE = 3,
177 USB_PROC_CHORUS_DEPTH = 4,
178
179 USB_PROC_DCR = 6,
180 USB_PROC_DCR_SWITCH = 1,
181 USB_PROC_DCR_RATIO = 2,
182 USB_PROC_DCR_MAX_AMP = 3,
183 USB_PROC_DCR_THRESHOLD = 4,
184 USB_PROC_DCR_ATTACK = 5,
185 USB_PROC_DCR_RELEASE = 6,
186 };
187
188
189 /*
190 * manual mapping of mixer names
191 * if the mixer topology is too complicated and the parsed names are
192 * ambiguous, add the entries in usbmixer_maps.c.
193 */
194 #include "usbmixer_maps.c"
195
196 /* get the mapped name if the unit matches */
197 static int check_mapped_name(struct mixer_build *state, int unitid, int control, char *buf, int buflen)
198 {
199 const struct usbmix_name_map *p;
200
201 if (! state->map)
202 return 0;
203
204 for (p = state->map; p->id; p++) {
205 if (p->id == unitid && p->name &&
206 (! control || ! p->control || control == p->control)) {
207 buflen--;
208 return strlcpy(buf, p->name, buflen);
209 }
210 }
211 return 0;
212 }
213
214 /* check whether the control should be ignored */
215 static int check_ignored_ctl(struct mixer_build *state, int unitid, int control)
216 {
217 const struct usbmix_name_map *p;
218
219 if (! state->map)
220 return 0;
221 for (p = state->map; p->id; p++) {
222 if (p->id == unitid && ! p->name &&
223 (! control || ! p->control || control == p->control)) {
224 /*
225 printk(KERN_DEBUG "ignored control %d:%d\n",
226 unitid, control);
227 */
228 return 1;
229 }
230 }
231 return 0;
232 }
233
234 /* get the mapped selector source name */
235 static int check_mapped_selector_name(struct mixer_build *state, int unitid,
236 int index, char *buf, int buflen)
237 {
238 const struct usbmix_selector_map *p;
239
240 if (! state->selector_map)
241 return 0;
242 for (p = state->selector_map; p->id; p++) {
243 if (p->id == unitid && index < p->count)
244 return strlcpy(buf, p->names[index], buflen);
245 }
246 return 0;
247 }
248
249 /*
250 * find an audio control unit with the given unit id
251 */
252 static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
253 {
254 unsigned char *p;
255
256 p = NULL;
257 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
258 USB_DT_CS_INTERFACE)) != NULL) {
259 if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
260 return p;
261 }
262 return NULL;
263 }
264
265
266 /*
267 * copy a string with the given id
268 */
269 static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
270 {
271 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
272 buf[len] = 0;
273 return len;
274 }
275
276 /*
277 * convert from the byte/word on usb descriptor to the zero-based integer
278 */
279 static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
280 {
281 switch (cval->val_type) {
282 case USB_MIXER_BOOLEAN:
283 return !!val;
284 case USB_MIXER_INV_BOOLEAN:
285 return !val;
286 case USB_MIXER_U8:
287 val &= 0xff;
288 break;
289 case USB_MIXER_S8:
290 val &= 0xff;
291 if (val >= 0x80)
292 val -= 0x100;
293 break;
294 case USB_MIXER_U16:
295 val &= 0xffff;
296 break;
297 case USB_MIXER_S16:
298 val &= 0xffff;
299 if (val >= 0x8000)
300 val -= 0x10000;
301 break;
302 }
303 return val;
304 }
305
306 /*
307 * convert from the zero-based int to the byte/word for usb descriptor
308 */
309 static int convert_bytes_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_S8:
317 case USB_MIXER_U8:
318 return val & 0xff;
319 case USB_MIXER_S16:
320 case USB_MIXER_U16:
321 return val & 0xffff;
322 }
323 return 0; /* not reached */
324 }
325
326 static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
327 {
328 if (! cval->res)
329 cval->res = 1;
330 if (val < cval->min)
331 return 0;
332 else if (val >= cval->max)
333 return (cval->max - cval->min + cval->res - 1) / cval->res;
334 else
335 return (val - cval->min) / cval->res;
336 }
337
338 static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
339 {
340 if (val < 0)
341 return cval->min;
342 if (! cval->res)
343 cval->res = 1;
344 val *= cval->res;
345 val += cval->min;
346 if (val > cval->max)
347 return cval->max;
348 return val;
349 }
350
351
352 /*
353 * retrieve a mixer value
354 */
355
356 static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
357 {
358 unsigned char buf[2];
359 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
360 int timeout = 10;
361
362 while (timeout-- > 0) {
363 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
364 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
365 request,
366 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
367 validx, cval->mixer->ctrlif | (cval->id << 8),
368 buf, val_len, 100) >= val_len) {
369 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
370 return 0;
371 }
372 }
373 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
374 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
375 return -EINVAL;
376 }
377
378 static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
379 {
380 return get_ctl_value(cval, GET_CUR, validx, value);
381 }
382
383 /* channel = 0: master, 1 = first channel */
384 static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
385 int channel, int *value)
386 {
387 return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value);
388 }
389
390 static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
391 int channel, int index, int *value)
392 {
393 int err;
394
395 if (cval->cached & (1 << channel)) {
396 *value = cval->cache_val[index];
397 return 0;
398 }
399 err = get_cur_mix_raw(cval, channel, value);
400 if (err < 0) {
401 if (!cval->mixer->ignore_ctl_error)
402 snd_printd(KERN_ERR "cannot get current value for "
403 "control %d ch %d: err = %d\n",
404 cval->control, channel, err);
405 return err;
406 }
407 cval->cached |= 1 << channel;
408 cval->cache_val[index] = *value;
409 return 0;
410 }
411
412
413 /*
414 * set a mixer value
415 */
416
417 static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
418 {
419 unsigned char buf[2];
420 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
421 int timeout = 10;
422
423 value_set = convert_bytes_value(cval, value_set);
424 buf[0] = value_set & 0xff;
425 buf[1] = (value_set >> 8) & 0xff;
426 while (timeout -- > 0)
427 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
428 usb_sndctrlpipe(cval->mixer->chip->dev, 0),
429 request,
430 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
431 validx, cval->mixer->ctrlif | (cval->id << 8),
432 buf, val_len, 100) >= 0)
433 return 0;
434 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
435 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
436 return -EINVAL;
437 }
438
439 static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
440 {
441 return set_ctl_value(cval, SET_CUR, validx, value);
442 }
443
444 static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
445 int index, int value)
446 {
447 int err;
448 err = set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel,
449 value);
450 if (err < 0)
451 return err;
452 cval->cached |= 1 << channel;
453 cval->cache_val[index] = value;
454 return 0;
455 }
456
457 /*
458 * TLV callback for mixer volume controls
459 */
460 static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
461 unsigned int size, unsigned int __user *_tlv)
462 {
463 struct usb_mixer_elem_info *cval = kcontrol->private_data;
464 DECLARE_TLV_DB_SCALE(scale, 0, 0, 0);
465
466 if (size < sizeof(scale))
467 return -ENOMEM;
468 /* USB descriptions contain the dB scale in 1/256 dB unit
469 * while ALSA TLV contains in 1/100 dB unit
470 */
471 scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256;
472 scale[3] = (convert_signed_value(cval, cval->res) * 100) / 256;
473 if (copy_to_user(_tlv, scale, sizeof(scale)))
474 return -EFAULT;
475 return 0;
476 }
477
478 /*
479 * parser routines begin here...
480 */
481
482 static int parse_audio_unit(struct mixer_build *state, int unitid);
483
484
485 /*
486 * check if the input/output channel routing is enabled on the given bitmap.
487 * used for mixer unit parser
488 */
489 static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
490 {
491 int idx = ich * num_outs + och;
492 return bmap[idx >> 3] & (0x80 >> (idx & 7));
493 }
494
495
496 /*
497 * add an alsa control element
498 * search and increment the index until an empty slot is found.
499 *
500 * if failed, give up and free the control instance.
501 */
502
503 static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl)
504 {
505 struct usb_mixer_elem_info *cval = kctl->private_data;
506 int err;
507
508 while (snd_ctl_find_id(state->chip->card, &kctl->id))
509 kctl->id.index++;
510 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
511 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
512 return err;
513 }
514 cval->elem_id = &kctl->id;
515 cval->next_id_elem = state->mixer->id_elems[cval->id];
516 state->mixer->id_elems[cval->id] = cval;
517 return 0;
518 }
519
520
521 /*
522 * get a terminal name string
523 */
524
525 static struct iterm_name_combo {
526 int type;
527 char *name;
528 } iterm_names[] = {
529 { 0x0300, "Output" },
530 { 0x0301, "Speaker" },
531 { 0x0302, "Headphone" },
532 { 0x0303, "HMD Audio" },
533 { 0x0304, "Desktop Speaker" },
534 { 0x0305, "Room Speaker" },
535 { 0x0306, "Com Speaker" },
536 { 0x0307, "LFE" },
537 { 0x0600, "External In" },
538 { 0x0601, "Analog In" },
539 { 0x0602, "Digital In" },
540 { 0x0603, "Line" },
541 { 0x0604, "Legacy In" },
542 { 0x0605, "IEC958 In" },
543 { 0x0606, "1394 DA Stream" },
544 { 0x0607, "1394 DV Stream" },
545 { 0x0700, "Embedded" },
546 { 0x0701, "Noise Source" },
547 { 0x0702, "Equalization Noise" },
548 { 0x0703, "CD" },
549 { 0x0704, "DAT" },
550 { 0x0705, "DCC" },
551 { 0x0706, "MiniDisk" },
552 { 0x0707, "Analog Tape" },
553 { 0x0708, "Phonograph" },
554 { 0x0709, "VCR Audio" },
555 { 0x070a, "Video Disk Audio" },
556 { 0x070b, "DVD Audio" },
557 { 0x070c, "TV Tuner Audio" },
558 { 0x070d, "Satellite Rec Audio" },
559 { 0x070e, "Cable Tuner Audio" },
560 { 0x070f, "DSS Audio" },
561 { 0x0710, "Radio Receiver" },
562 { 0x0711, "Radio Transmitter" },
563 { 0x0712, "Multi-Track Recorder" },
564 { 0x0713, "Synthesizer" },
565 { 0 },
566 };
567
568 static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
569 unsigned char *name, int maxlen, int term_only)
570 {
571 struct iterm_name_combo *names;
572
573 if (iterm->name)
574 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
575
576 /* virtual type - not a real terminal */
577 if (iterm->type >> 16) {
578 if (term_only)
579 return 0;
580 switch (iterm->type >> 16) {
581 case SELECTOR_UNIT:
582 strcpy(name, "Selector"); return 8;
583 case PROCESSING_UNIT:
584 strcpy(name, "Process Unit"); return 12;
585 case EXTENSION_UNIT:
586 strcpy(name, "Ext Unit"); return 8;
587 case MIXER_UNIT:
588 strcpy(name, "Mixer"); return 5;
589 default:
590 return sprintf(name, "Unit %d", iterm->id);
591 }
592 }
593
594 switch (iterm->type & 0xff00) {
595 case 0x0100:
596 strcpy(name, "PCM"); return 3;
597 case 0x0200:
598 strcpy(name, "Mic"); return 3;
599 case 0x0400:
600 strcpy(name, "Headset"); return 7;
601 case 0x0500:
602 strcpy(name, "Phone"); return 5;
603 }
604
605 for (names = iterm_names; names->type; names++)
606 if (names->type == iterm->type) {
607 strcpy(name, names->name);
608 return strlen(names->name);
609 }
610 return 0;
611 }
612
613
614 /*
615 * parse the source unit recursively until it reaches to a terminal
616 * or a branched unit.
617 */
618 static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
619 {
620 unsigned char *p1;
621
622 memset(term, 0, sizeof(*term));
623 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
624 term->id = id;
625 switch (p1[2]) {
626 case INPUT_TERMINAL:
627 term->type = combine_word(p1 + 4);
628 term->channels = p1[7];
629 term->chconfig = combine_word(p1 + 8);
630 term->name = p1[11];
631 return 0;
632 case FEATURE_UNIT:
633 id = p1[4];
634 break; /* continue to parse */
635 case MIXER_UNIT:
636 term->type = p1[2] << 16; /* virtual type */
637 term->channels = p1[5 + p1[4]];
638 term->chconfig = combine_word(p1 + 6 + p1[4]);
639 term->name = p1[p1[0] - 1];
640 return 0;
641 case SELECTOR_UNIT:
642 /* call recursively to retrieve the channel info */
643 if (check_input_term(state, p1[5], term) < 0)
644 return -ENODEV;
645 term->type = p1[2] << 16; /* virtual type */
646 term->id = id;
647 term->name = p1[9 + p1[0] - 1];
648 return 0;
649 case PROCESSING_UNIT:
650 case EXTENSION_UNIT:
651 if (p1[6] == 1) {
652 id = p1[7];
653 break; /* continue to parse */
654 }
655 term->type = p1[2] << 16; /* virtual type */
656 term->channels = p1[7 + p1[6]];
657 term->chconfig = combine_word(p1 + 8 + p1[6]);
658 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
659 return 0;
660 default:
661 return -ENODEV;
662 }
663 }
664 return -ENODEV;
665 }
666
667
668 /*
669 * Feature Unit
670 */
671
672 /* feature unit control information */
673 struct usb_feature_control_info {
674 const char *name;
675 unsigned int type; /* control type (mute, volume, etc.) */
676 };
677
678 static struct usb_feature_control_info audio_feature_info[] = {
679 { "Mute", USB_MIXER_INV_BOOLEAN },
680 { "Volume", USB_MIXER_S16 },
681 { "Tone Control - Bass", USB_MIXER_S8 },
682 { "Tone Control - Mid", USB_MIXER_S8 },
683 { "Tone Control - Treble", USB_MIXER_S8 },
684 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
685 { "Auto Gain Control", USB_MIXER_BOOLEAN },
686 { "Delay Control", USB_MIXER_U16 },
687 { "Bass Boost", USB_MIXER_BOOLEAN },
688 { "Loudness", USB_MIXER_BOOLEAN },
689 };
690
691
692 /* private_free callback */
693 static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
694 {
695 kfree(kctl->private_data);
696 kctl->private_data = NULL;
697 }
698
699
700 /*
701 * interface to ALSA control for feature/mixer units
702 */
703
704 /*
705 * retrieve the minimum and maximum values for the specified control
706 */
707 static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
708 {
709 /* for failsafe */
710 cval->min = default_min;
711 cval->max = cval->min + 1;
712 cval->res = 1;
713
714 if (cval->val_type == USB_MIXER_BOOLEAN ||
715 cval->val_type == USB_MIXER_INV_BOOLEAN) {
716 cval->initialized = 1;
717 } else {
718 int minchn = 0;
719 if (cval->cmask) {
720 int i;
721 for (i = 0; i < MAX_CHANNELS; i++)
722 if (cval->cmask & (1 << i)) {
723 minchn = i + 1;
724 break;
725 }
726 }
727 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
728 get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
729 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
730 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
731 return -EINVAL;
732 }
733 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
734 cval->res = 1;
735 } else {
736 int last_valid_res = cval->res;
737
738 while (cval->res > 1) {
739 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
740 break;
741 cval->res /= 2;
742 }
743 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
744 cval->res = last_valid_res;
745 }
746 if (cval->res == 0)
747 cval->res = 1;
748
749 /* Additional checks for the proper resolution
750 *
751 * Some devices report smaller resolutions than actually
752 * reacting. They don't return errors but simply clip
753 * to the lower aligned value.
754 */
755 if (cval->min + cval->res < cval->max) {
756 int last_valid_res = cval->res;
757 int saved, test, check;
758 get_cur_mix_raw(cval, minchn, &saved);
759 for (;;) {
760 test = saved;
761 if (test < cval->max)
762 test += cval->res;
763 else
764 test -= cval->res;
765 if (test < cval->min || test > cval->max ||
766 set_cur_mix_value(cval, minchn, 0, test) ||
767 get_cur_mix_raw(cval, minchn, &check)) {
768 cval->res = last_valid_res;
769 break;
770 }
771 if (test == check)
772 break;
773 cval->res *= 2;
774 }
775 set_cur_mix_value(cval, minchn, 0, saved);
776 }
777
778 cval->initialized = 1;
779 }
780 return 0;
781 }
782
783
784 /* get a feature/mixer unit info */
785 static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
786 {
787 struct usb_mixer_elem_info *cval = kcontrol->private_data;
788
789 if (cval->val_type == USB_MIXER_BOOLEAN ||
790 cval->val_type == USB_MIXER_INV_BOOLEAN)
791 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
792 else
793 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
794 uinfo->count = cval->channels;
795 if (cval->val_type == USB_MIXER_BOOLEAN ||
796 cval->val_type == USB_MIXER_INV_BOOLEAN) {
797 uinfo->value.integer.min = 0;
798 uinfo->value.integer.max = 1;
799 } else {
800 if (! cval->initialized)
801 get_min_max(cval, 0);
802 uinfo->value.integer.min = 0;
803 uinfo->value.integer.max =
804 (cval->max - cval->min + cval->res - 1) / cval->res;
805 }
806 return 0;
807 }
808
809 /* get the current value from feature/mixer unit */
810 static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
811 {
812 struct usb_mixer_elem_info *cval = kcontrol->private_data;
813 int c, cnt, val, err;
814
815 ucontrol->value.integer.value[0] = cval->min;
816 if (cval->cmask) {
817 cnt = 0;
818 for (c = 0; c < MAX_CHANNELS; c++) {
819 if (!(cval->cmask & (1 << c)))
820 continue;
821 err = get_cur_mix_value(cval, c + 1, cnt, &val);
822 if (err < 0)
823 return cval->mixer->ignore_ctl_error ? 0 : err;
824 val = get_relative_value(cval, val);
825 ucontrol->value.integer.value[cnt] = val;
826 cnt++;
827 }
828 return 0;
829 } else {
830 /* master channel */
831 err = get_cur_mix_value(cval, 0, 0, &val);
832 if (err < 0)
833 return cval->mixer->ignore_ctl_error ? 0 : err;
834 val = get_relative_value(cval, val);
835 ucontrol->value.integer.value[0] = val;
836 }
837 return 0;
838 }
839
840 /* put the current value to feature/mixer unit */
841 static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
842 {
843 struct usb_mixer_elem_info *cval = kcontrol->private_data;
844 int c, cnt, val, oval, err;
845 int changed = 0;
846
847 if (cval->cmask) {
848 cnt = 0;
849 for (c = 0; c < MAX_CHANNELS; c++) {
850 if (!(cval->cmask & (1 << c)))
851 continue;
852 err = get_cur_mix_value(cval, c + 1, cnt, &oval);
853 if (err < 0)
854 return cval->mixer->ignore_ctl_error ? 0 : err;
855 val = ucontrol->value.integer.value[cnt];
856 val = get_abs_value(cval, val);
857 if (oval != val) {
858 set_cur_mix_value(cval, c + 1, cnt, val);
859 changed = 1;
860 }
861 cnt++;
862 }
863 } else {
864 /* master channel */
865 err = get_cur_mix_value(cval, 0, 0, &oval);
866 if (err < 0)
867 return cval->mixer->ignore_ctl_error ? 0 : err;
868 val = ucontrol->value.integer.value[0];
869 val = get_abs_value(cval, val);
870 if (val != oval) {
871 set_cur_mix_value(cval, 0, 0, val);
872 changed = 1;
873 }
874 }
875 return changed;
876 }
877
878 static struct snd_kcontrol_new usb_feature_unit_ctl = {
879 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
880 .name = "", /* will be filled later manually */
881 .info = mixer_ctl_feature_info,
882 .get = mixer_ctl_feature_get,
883 .put = mixer_ctl_feature_put,
884 };
885
886
887 /*
888 * build a feature control
889 */
890
891 static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
892 unsigned int ctl_mask, int control,
893 struct usb_audio_term *iterm, int unitid)
894 {
895 unsigned int len = 0;
896 int mapped_name = 0;
897 int nameid = desc[desc[0] - 1];
898 struct snd_kcontrol *kctl;
899 struct usb_mixer_elem_info *cval;
900
901 control++; /* change from zero-based to 1-based value */
902
903 if (control == USB_FEATURE_GEQ) {
904 /* FIXME: not supported yet */
905 return;
906 }
907
908 if (check_ignored_ctl(state, unitid, control))
909 return;
910
911 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
912 if (! cval) {
913 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
914 return;
915 }
916 cval->mixer = state->mixer;
917 cval->id = unitid;
918 cval->control = control;
919 cval->cmask = ctl_mask;
920 cval->val_type = audio_feature_info[control-1].type;
921 if (ctl_mask == 0)
922 cval->channels = 1; /* master channel */
923 else {
924 int i, c = 0;
925 for (i = 0; i < 16; i++)
926 if (ctl_mask & (1 << i))
927 c++;
928 cval->channels = c;
929 }
930
931 /* get min/max values */
932 get_min_max(cval, 0);
933
934 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
935 if (! kctl) {
936 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
937 kfree(cval);
938 return;
939 }
940 kctl->private_free = usb_mixer_elem_free;
941
942 len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
943 mapped_name = len != 0;
944 if (! len && nameid)
945 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
946
947 switch (control) {
948 case USB_FEATURE_MUTE:
949 case USB_FEATURE_VOLUME:
950 /* determine the control name. the rule is:
951 * - if a name id is given in descriptor, use it.
952 * - if the connected input can be determined, then use the name
953 * of terminal type.
954 * - if the connected output can be determined, use it.
955 * - otherwise, anonymous name.
956 */
957 if (! len) {
958 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
959 if (! len)
960 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
961 if (! len)
962 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
963 "Feature %d", unitid);
964 }
965 /* determine the stream direction:
966 * if the connected output is USB stream, then it's likely a
967 * capture stream. otherwise it should be playback (hopefully :)
968 */
969 if (! mapped_name && ! (state->oterm.type >> 16)) {
970 if ((state->oterm.type & 0xff00) == 0x0100) {
971 len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name));
972 } else {
973 len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name));
974 }
975 }
976 strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
977 sizeof(kctl->id.name));
978 if (control == USB_FEATURE_VOLUME) {
979 kctl->tlv.c = mixer_vol_tlv;
980 kctl->vd[0].access |=
981 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
982 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
983 }
984 break;
985
986 default:
987 if (! len)
988 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
989 sizeof(kctl->id.name));
990 break;
991 }
992
993 /* quirk for UDA1321/N101 */
994 /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
995 /* is not very clear from datasheets */
996 /* I hope that the min value is -15360 for newer firmware --jk */
997 switch (state->chip->usb_id) {
998 case USB_ID(0x0471, 0x0101):
999 case USB_ID(0x0471, 0x0104):
1000 case USB_ID(0x0471, 0x0105):
1001 case USB_ID(0x0672, 0x1041):
1002 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
1003 cval->min == -15616) {
1004 snd_printk(KERN_INFO "using volume control quirk for the UDA1321/N101 chip\n");
1005 cval->max = -256;
1006 }
1007 }
1008
1009 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1010 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
1011 add_control_to_empty(state, kctl);
1012 }
1013
1014
1015
1016 /*
1017 * parse a feature unit
1018 *
1019 * most of controlls are defined here.
1020 */
1021 static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsigned char *ftr)
1022 {
1023 int channels, i, j;
1024 struct usb_audio_term iterm;
1025 unsigned int master_bits, first_ch_bits;
1026 int err, csize;
1027
1028 if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
1029 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
1030 return -EINVAL;
1031 }
1032
1033 /* parse the source unit */
1034 if ((err = parse_audio_unit(state, ftr[4])) < 0)
1035 return err;
1036
1037 /* determine the input source type and name */
1038 if (check_input_term(state, ftr[4], &iterm) < 0)
1039 return -EINVAL;
1040
1041 channels = (ftr[0] - 7) / csize - 1;
1042
1043 master_bits = snd_usb_combine_bytes(ftr + 6, csize);
1044 if (channels > 0)
1045 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
1046 else
1047 first_ch_bits = 0;
1048 /* check all control types */
1049 for (i = 0; i < 10; i++) {
1050 unsigned int ch_bits = 0;
1051 for (j = 0; j < channels; j++) {
1052 unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize);
1053 if (mask & (1 << i))
1054 ch_bits |= (1 << j);
1055 }
1056 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
1057 build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid);
1058 if (master_bits & (1 << i))
1059 build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
1060 }
1061
1062 return 0;
1063 }
1064
1065
1066 /*
1067 * Mixer Unit
1068 */
1069
1070 /*
1071 * build a mixer unit control
1072 *
1073 * the callbacks are identical with feature unit.
1074 * input channel number (zero based) is given in control field instead.
1075 */
1076
1077 static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
1078 int in_pin, int in_ch, int unitid,
1079 struct usb_audio_term *iterm)
1080 {
1081 struct usb_mixer_elem_info *cval;
1082 unsigned int input_pins = desc[4];
1083 unsigned int num_outs = desc[5 + input_pins];
1084 unsigned int i, len;
1085 struct snd_kcontrol *kctl;
1086
1087 if (check_ignored_ctl(state, unitid, 0))
1088 return;
1089
1090 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1091 if (! cval)
1092 return;
1093
1094 cval->mixer = state->mixer;
1095 cval->id = unitid;
1096 cval->control = in_ch + 1; /* based on 1 */
1097 cval->val_type = USB_MIXER_S16;
1098 for (i = 0; i < num_outs; i++) {
1099 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1100 cval->cmask |= (1 << i);
1101 cval->channels++;
1102 }
1103 }
1104
1105 /* get min/max values */
1106 get_min_max(cval, 0);
1107
1108 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1109 if (! kctl) {
1110 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1111 kfree(cval);
1112 return;
1113 }
1114 kctl->private_free = usb_mixer_elem_free;
1115
1116 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1117 if (! len)
1118 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1119 if (! len)
1120 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1121 strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name));
1122
1123 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1124 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1125 add_control_to_empty(state, kctl);
1126 }
1127
1128
1129 /*
1130 * parse a mixer unit
1131 */
1132 static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1133 {
1134 struct usb_audio_term iterm;
1135 int input_pins, num_ins, num_outs;
1136 int pin, ich, err;
1137
1138 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1139 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1140 return -EINVAL;
1141 }
1142 /* no bmControls field (e.g. Maya44) -> ignore */
1143 if (desc[0] <= 10 + input_pins) {
1144 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1145 return 0;
1146 }
1147
1148 num_ins = 0;
1149 ich = 0;
1150 for (pin = 0; pin < input_pins; pin++) {
1151 err = parse_audio_unit(state, desc[5 + pin]);
1152 if (err < 0)
1153 return err;
1154 err = check_input_term(state, desc[5 + pin], &iterm);
1155 if (err < 0)
1156 return err;
1157 num_ins += iterm.channels;
1158 for (; ich < num_ins; ++ich) {
1159 int och, ich_has_controls = 0;
1160
1161 for (och = 0; och < num_outs; ++och) {
1162 if (check_matrix_bitmap(desc + 9 + input_pins,
1163 ich, och, num_outs)) {
1164 ich_has_controls = 1;
1165 break;
1166 }
1167 }
1168 if (ich_has_controls)
1169 build_mixer_unit_ctl(state, desc, pin, ich,
1170 unitid, &iterm);
1171 }
1172 }
1173 return 0;
1174 }
1175
1176
1177 /*
1178 * Processing Unit / Extension Unit
1179 */
1180
1181 /* get callback for processing/extension unit */
1182 static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1183 {
1184 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1185 int err, val;
1186
1187 err = get_cur_ctl_value(cval, cval->control << 8, &val);
1188 if (err < 0 && cval->mixer->ignore_ctl_error) {
1189 ucontrol->value.integer.value[0] = cval->min;
1190 return 0;
1191 }
1192 if (err < 0)
1193 return err;
1194 val = get_relative_value(cval, val);
1195 ucontrol->value.integer.value[0] = val;
1196 return 0;
1197 }
1198
1199 /* put callback for processing/extension unit */
1200 static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1201 {
1202 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1203 int val, oval, err;
1204
1205 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1206 if (err < 0) {
1207 if (cval->mixer->ignore_ctl_error)
1208 return 0;
1209 return err;
1210 }
1211 val = ucontrol->value.integer.value[0];
1212 val = get_abs_value(cval, val);
1213 if (val != oval) {
1214 set_cur_ctl_value(cval, cval->control << 8, val);
1215 return 1;
1216 }
1217 return 0;
1218 }
1219
1220 /* alsa control interface for processing/extension unit */
1221 static struct snd_kcontrol_new mixer_procunit_ctl = {
1222 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1223 .name = "", /* will be filled later */
1224 .info = mixer_ctl_feature_info,
1225 .get = mixer_ctl_procunit_get,
1226 .put = mixer_ctl_procunit_put,
1227 };
1228
1229
1230 /*
1231 * predefined data for processing units
1232 */
1233 struct procunit_value_info {
1234 int control;
1235 char *suffix;
1236 int val_type;
1237 int min_value;
1238 };
1239
1240 struct procunit_info {
1241 int type;
1242 char *name;
1243 struct procunit_value_info *values;
1244 };
1245
1246 static struct procunit_value_info updown_proc_info[] = {
1247 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1248 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1249 { 0 }
1250 };
1251 static struct procunit_value_info prologic_proc_info[] = {
1252 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1253 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1254 { 0 }
1255 };
1256 static struct procunit_value_info threed_enh_proc_info[] = {
1257 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1258 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1259 { 0 }
1260 };
1261 static struct procunit_value_info reverb_proc_info[] = {
1262 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1263 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1264 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1265 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1266 { 0 }
1267 };
1268 static struct procunit_value_info chorus_proc_info[] = {
1269 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1270 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1271 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1272 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1273 { 0 }
1274 };
1275 static struct procunit_value_info dcr_proc_info[] = {
1276 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1277 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1278 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1279 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1280 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1281 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1282 { 0 }
1283 };
1284
1285 static struct procunit_info procunits[] = {
1286 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1287 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1288 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1289 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1290 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1291 { USB_PROC_DCR, "DCR", dcr_proc_info },
1292 { 0 },
1293 };
1294
1295 /*
1296 * build a processing/extension unit
1297 */
1298 static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1299 {
1300 int num_ins = dsc[6];
1301 struct usb_mixer_elem_info *cval;
1302 struct snd_kcontrol *kctl;
1303 int i, err, nameid, type, len;
1304 struct procunit_info *info;
1305 struct procunit_value_info *valinfo;
1306 static struct procunit_value_info default_value_info[] = {
1307 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1308 { 0 }
1309 };
1310 static struct procunit_info default_info = {
1311 0, NULL, default_value_info
1312 };
1313
1314 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1315 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1316 return -EINVAL;
1317 }
1318
1319 for (i = 0; i < num_ins; i++) {
1320 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1321 return err;
1322 }
1323
1324 type = combine_word(&dsc[4]);
1325 for (info = list; info && info->type; info++)
1326 if (info->type == type)
1327 break;
1328 if (! info || ! info->type)
1329 info = &default_info;
1330
1331 for (valinfo = info->values; valinfo->control; valinfo++) {
1332 /* FIXME: bitmap might be longer than 8bit */
1333 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1334 continue;
1335 if (check_ignored_ctl(state, unitid, valinfo->control))
1336 continue;
1337 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1338 if (! cval) {
1339 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1340 return -ENOMEM;
1341 }
1342 cval->mixer = state->mixer;
1343 cval->id = unitid;
1344 cval->control = valinfo->control;
1345 cval->val_type = valinfo->val_type;
1346 cval->channels = 1;
1347
1348 /* get min/max values */
1349 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1350 /* FIXME: hard-coded */
1351 cval->min = 1;
1352 cval->max = dsc[15];
1353 cval->res = 1;
1354 cval->initialized = 1;
1355 } else
1356 get_min_max(cval, valinfo->min_value);
1357
1358 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1359 if (! kctl) {
1360 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1361 kfree(cval);
1362 return -ENOMEM;
1363 }
1364 kctl->private_free = usb_mixer_elem_free;
1365
1366 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
1367 ;
1368 else if (info->name)
1369 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1370 else {
1371 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1372 len = 0;
1373 if (nameid)
1374 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1375 if (! len)
1376 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1377 }
1378 strlcat(kctl->id.name, " ", sizeof(kctl->id.name));
1379 strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name));
1380
1381 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1382 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1383 if ((err = add_control_to_empty(state, kctl)) < 0)
1384 return err;
1385 }
1386 return 0;
1387 }
1388
1389
1390 static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1391 {
1392 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1393 }
1394
1395 static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1396 {
1397 return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
1398 }
1399
1400
1401 /*
1402 * Selector Unit
1403 */
1404
1405 /* info callback for selector unit
1406 * use an enumerator type for routing
1407 */
1408 static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1409 {
1410 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1411 char **itemlist = (char **)kcontrol->private_value;
1412
1413 if (snd_BUG_ON(!itemlist))
1414 return -EINVAL;
1415 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1416 uinfo->count = 1;
1417 uinfo->value.enumerated.items = cval->max;
1418 if ((int)uinfo->value.enumerated.item >= cval->max)
1419 uinfo->value.enumerated.item = cval->max - 1;
1420 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1421 return 0;
1422 }
1423
1424 /* get callback for selector unit */
1425 static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1426 {
1427 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1428 int val, err;
1429
1430 err = get_cur_ctl_value(cval, 0, &val);
1431 if (err < 0) {
1432 if (cval->mixer->ignore_ctl_error) {
1433 ucontrol->value.enumerated.item[0] = 0;
1434 return 0;
1435 }
1436 return err;
1437 }
1438 val = get_relative_value(cval, val);
1439 ucontrol->value.enumerated.item[0] = val;
1440 return 0;
1441 }
1442
1443 /* put callback for selector unit */
1444 static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1445 {
1446 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1447 int val, oval, err;
1448
1449 err = get_cur_ctl_value(cval, 0, &oval);
1450 if (err < 0) {
1451 if (cval->mixer->ignore_ctl_error)
1452 return 0;
1453 return err;
1454 }
1455 val = ucontrol->value.enumerated.item[0];
1456 val = get_abs_value(cval, val);
1457 if (val != oval) {
1458 set_cur_ctl_value(cval, 0, val);
1459 return 1;
1460 }
1461 return 0;
1462 }
1463
1464 /* alsa control interface for selector unit */
1465 static struct snd_kcontrol_new mixer_selectunit_ctl = {
1466 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1467 .name = "", /* will be filled later */
1468 .info = mixer_ctl_selector_info,
1469 .get = mixer_ctl_selector_get,
1470 .put = mixer_ctl_selector_put,
1471 };
1472
1473
1474 /* private free callback.
1475 * free both private_data and private_value
1476 */
1477 static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1478 {
1479 int i, num_ins = 0;
1480
1481 if (kctl->private_data) {
1482 struct usb_mixer_elem_info *cval = kctl->private_data;
1483 num_ins = cval->max;
1484 kfree(cval);
1485 kctl->private_data = NULL;
1486 }
1487 if (kctl->private_value) {
1488 char **itemlist = (char **)kctl->private_value;
1489 for (i = 0; i < num_ins; i++)
1490 kfree(itemlist[i]);
1491 kfree(itemlist);
1492 kctl->private_value = 0;
1493 }
1494 }
1495
1496 /*
1497 * parse a selector unit
1498 */
1499 static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1500 {
1501 unsigned int num_ins = desc[4];
1502 unsigned int i, nameid, len;
1503 int err;
1504 struct usb_mixer_elem_info *cval;
1505 struct snd_kcontrol *kctl;
1506 char **namelist;
1507
1508 if (! num_ins || desc[0] < 5 + num_ins) {
1509 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1510 return -EINVAL;
1511 }
1512
1513 for (i = 0; i < num_ins; i++) {
1514 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1515 return err;
1516 }
1517
1518 if (num_ins == 1) /* only one ? nonsense! */
1519 return 0;
1520
1521 if (check_ignored_ctl(state, unitid, 0))
1522 return 0;
1523
1524 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1525 if (! cval) {
1526 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1527 return -ENOMEM;
1528 }
1529 cval->mixer = state->mixer;
1530 cval->id = unitid;
1531 cval->val_type = USB_MIXER_U8;
1532 cval->channels = 1;
1533 cval->min = 1;
1534 cval->max = num_ins;
1535 cval->res = 1;
1536 cval->initialized = 1;
1537
1538 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1539 if (! namelist) {
1540 snd_printk(KERN_ERR "cannot malloc\n");
1541 kfree(cval);
1542 return -ENOMEM;
1543 }
1544 #define MAX_ITEM_NAME_LEN 64
1545 for (i = 0; i < num_ins; i++) {
1546 struct usb_audio_term iterm;
1547 len = 0;
1548 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1549 if (! namelist[i]) {
1550 snd_printk(KERN_ERR "cannot malloc\n");
1551 while (i--)
1552 kfree(namelist[i]);
1553 kfree(namelist);
1554 kfree(cval);
1555 return -ENOMEM;
1556 }
1557 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1558 MAX_ITEM_NAME_LEN);
1559 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1560 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1561 if (! len)
1562 sprintf(namelist[i], "Input %d", i);
1563 }
1564
1565 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1566 if (! kctl) {
1567 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1568 kfree(namelist);
1569 kfree(cval);
1570 return -ENOMEM;
1571 }
1572 kctl->private_value = (unsigned long)namelist;
1573 kctl->private_free = usb_mixer_selector_elem_free;
1574
1575 nameid = desc[desc[0] - 1];
1576 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1577 if (len)
1578 ;
1579 else if (nameid)
1580 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1581 else {
1582 len = get_term_name(state, &state->oterm,
1583 kctl->id.name, sizeof(kctl->id.name), 0);
1584 if (! len)
1585 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1586
1587 if ((state->oterm.type & 0xff00) == 0x0100)
1588 strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name));
1589 else
1590 strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name));
1591 }
1592
1593 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1594 cval->id, kctl->id.name, num_ins);
1595 if ((err = add_control_to_empty(state, kctl)) < 0)
1596 return err;
1597
1598 return 0;
1599 }
1600
1601
1602 /*
1603 * parse an audio unit recursively
1604 */
1605
1606 static int parse_audio_unit(struct mixer_build *state, int unitid)
1607 {
1608 unsigned char *p1;
1609
1610 if (test_and_set_bit(unitid, state->unitbitmap))
1611 return 0; /* the unit already visited */
1612
1613 p1 = find_audio_control_unit(state, unitid);
1614 if (!p1) {
1615 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1616 return -EINVAL;
1617 }
1618
1619 switch (p1[2]) {
1620 case INPUT_TERMINAL:
1621 return 0; /* NOP */
1622 case MIXER_UNIT:
1623 return parse_audio_mixer_unit(state, unitid, p1);
1624 case SELECTOR_UNIT:
1625 return parse_audio_selector_unit(state, unitid, p1);
1626 case FEATURE_UNIT:
1627 return parse_audio_feature_unit(state, unitid, p1);
1628 case PROCESSING_UNIT:
1629 return parse_audio_processing_unit(state, unitid, p1);
1630 case EXTENSION_UNIT:
1631 return parse_audio_extension_unit(state, unitid, p1);
1632 default:
1633 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1634 return -EINVAL;
1635 }
1636 }
1637
1638 static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1639 {
1640 kfree(mixer->id_elems);
1641 if (mixer->urb) {
1642 kfree(mixer->urb->transfer_buffer);
1643 usb_free_urb(mixer->urb);
1644 }
1645 usb_free_urb(mixer->rc_urb);
1646 kfree(mixer->rc_setup_packet);
1647 kfree(mixer);
1648 }
1649
1650 static int snd_usb_mixer_dev_free(struct snd_device *device)
1651 {
1652 struct usb_mixer_interface *mixer = device->device_data;
1653 snd_usb_mixer_free(mixer);
1654 return 0;
1655 }
1656
1657 /*
1658 * create mixer controls
1659 *
1660 * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1661 */
1662 static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1663 {
1664 unsigned char *desc;
1665 struct mixer_build state;
1666 int err;
1667 const struct usbmix_ctl_map *map;
1668 struct usb_host_interface *hostif;
1669
1670 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1671 memset(&state, 0, sizeof(state));
1672 state.chip = mixer->chip;
1673 state.mixer = mixer;
1674 state.buffer = hostif->extra;
1675 state.buflen = hostif->extralen;
1676
1677 /* check the mapping table */
1678 for (map = usbmix_ctl_maps; map->id; map++) {
1679 if (map->id == state.chip->usb_id) {
1680 state.map = map->map;
1681 state.selector_map = map->selector_map;
1682 mixer->ignore_ctl_error = map->ignore_ctl_error;
1683 break;
1684 }
1685 }
1686
1687 desc = NULL;
1688 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
1689 if (desc[0] < 9)
1690 continue; /* invalid descriptor? */
1691 set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */
1692 state.oterm.id = desc[3];
1693 state.oterm.type = combine_word(&desc[4]);
1694 state.oterm.name = desc[8];
1695 err = parse_audio_unit(&state, desc[7]);
1696 if (err < 0)
1697 return err;
1698 }
1699 return 0;
1700 }
1701
1702 static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1703 int unitid)
1704 {
1705 struct usb_mixer_elem_info *info;
1706
1707 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1708 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1709 info->elem_id);
1710 }
1711
1712 static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1713 int unitid)
1714 {
1715 if (!mixer->rc_cfg)
1716 return;
1717 /* unit ids specific to Extigy/Audigy 2 NX: */
1718 switch (unitid) {
1719 case 0: /* remote control */
1720 mixer->rc_urb->dev = mixer->chip->dev;
1721 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1722 break;
1723 case 4: /* digital in jack */
1724 case 7: /* line in jacks */
1725 case 19: /* speaker out jacks */
1726 case 20: /* headphones out jack */
1727 break;
1728 /* live24ext: 4 = line-in jack */
1729 case 3: /* hp-out jack (may actuate Mute) */
1730 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1731 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
1732 snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
1733 break;
1734 default:
1735 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
1736 break;
1737 }
1738 }
1739
1740 static void snd_usb_mixer_status_complete(struct urb *urb)
1741 {
1742 struct usb_mixer_interface *mixer = urb->context;
1743
1744 if (urb->status == 0) {
1745 u8 *buf = urb->transfer_buffer;
1746 int i;
1747
1748 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1749 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1750 buf[0], buf[1]);
1751 /* ignore any notifications not from the control interface */
1752 if ((buf[0] & 0x0f) != 0)
1753 continue;
1754 if (!(buf[0] & 0x40))
1755 snd_usb_mixer_notify_id(mixer, buf[1]);
1756 else
1757 snd_usb_mixer_memory_change(mixer, buf[1]);
1758 }
1759 }
1760 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1761 urb->dev = mixer->chip->dev;
1762 usb_submit_urb(urb, GFP_ATOMIC);
1763 }
1764 }
1765
1766 /* create the handler for the optional status interrupt endpoint */
1767 static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1768 {
1769 struct usb_host_interface *hostif;
1770 struct usb_endpoint_descriptor *ep;
1771 void *transfer_buffer;
1772 int buffer_length;
1773 unsigned int epnum;
1774
1775 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1776 /* we need one interrupt input endpoint */
1777 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1778 return 0;
1779 ep = get_endpoint(hostif, 0);
1780 if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
1781 return 0;
1782
1783 epnum = usb_endpoint_num(ep);
1784 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1785 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1786 if (!transfer_buffer)
1787 return -ENOMEM;
1788 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1789 if (!mixer->urb) {
1790 kfree(transfer_buffer);
1791 return -ENOMEM;
1792 }
1793 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1794 usb_rcvintpipe(mixer->chip->dev, epnum),
1795 transfer_buffer, buffer_length,
1796 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1797 usb_submit_urb(mixer->urb, GFP_KERNEL);
1798 return 0;
1799 }
1800
1801 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
1802 {
1803 struct usb_mixer_interface *mixer = urb->context;
1804 const struct rc_config *rc = mixer->rc_cfg;
1805 u32 code;
1806
1807 if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
1808 return;
1809
1810 code = mixer->rc_buffer[rc->offset];
1811 if (rc->length == 2)
1812 code |= mixer->rc_buffer[rc->offset + 1] << 8;
1813
1814 /* the Mute button actually changes the mixer control */
1815 if (code == rc->mute_code)
1816 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
1817 mixer->rc_code = code;
1818 wmb();
1819 wake_up(&mixer->rc_waitq);
1820 }
1821
1822 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
1823 long count, loff_t *offset)
1824 {
1825 struct usb_mixer_interface *mixer = hw->private_data;
1826 int err;
1827 u32 rc_code;
1828
1829 if (count != 1 && count != 4)
1830 return -EINVAL;
1831 err = wait_event_interruptible(mixer->rc_waitq,
1832 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1833 if (err == 0) {
1834 if (count == 1)
1835 err = put_user(rc_code, buf);
1836 else
1837 err = put_user(rc_code, (u32 __user *)buf);
1838 }
1839 return err < 0 ? err : count;
1840 }
1841
1842 static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
1843 poll_table *wait)
1844 {
1845 struct usb_mixer_interface *mixer = hw->private_data;
1846
1847 poll_wait(file, &mixer->rc_waitq, wait);
1848 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
1849 }
1850
1851 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
1852 {
1853 struct snd_hwdep *hwdep;
1854 int err, len, i;
1855
1856 for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
1857 if (rc_configs[i].usb_id == mixer->chip->usb_id)
1858 break;
1859 if (i >= ARRAY_SIZE(rc_configs))
1860 return 0;
1861 mixer->rc_cfg = &rc_configs[i];
1862
1863 len = mixer->rc_cfg->packet_length;
1864
1865 init_waitqueue_head(&mixer->rc_waitq);
1866 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
1867 if (err < 0)
1868 return err;
1869 snprintf(hwdep->name, sizeof(hwdep->name),
1870 "%s remote control", mixer->chip->card->shortname);
1871 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
1872 hwdep->private_data = mixer;
1873 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
1874 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
1875 hwdep->exclusive = 1;
1876
1877 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
1878 if (!mixer->rc_urb)
1879 return -ENOMEM;
1880 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
1881 if (!mixer->rc_setup_packet) {
1882 usb_free_urb(mixer->rc_urb);
1883 mixer->rc_urb = NULL;
1884 return -ENOMEM;
1885 }
1886 mixer->rc_setup_packet->bRequestType =
1887 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
1888 mixer->rc_setup_packet->bRequest = GET_MEM;
1889 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
1890 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
1891 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
1892 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
1893 usb_rcvctrlpipe(mixer->chip->dev, 0),
1894 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
1895 snd_usb_soundblaster_remote_complete, mixer);
1896 return 0;
1897 }
1898
1899 #define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
1900
1901 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1902 {
1903 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1904 int index = kcontrol->private_value;
1905
1906 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
1907 return 0;
1908 }
1909
1910 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1911 {
1912 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1913 int index = kcontrol->private_value;
1914 int value = ucontrol->value.integer.value[0];
1915 int err, changed;
1916
1917 if (value > 1)
1918 return -EINVAL;
1919 changed = value != mixer->audigy2nx_leds[index];
1920 err = snd_usb_ctl_msg(mixer->chip->dev,
1921 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
1922 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1923 value, index + 2, NULL, 0, 100);
1924 if (err < 0)
1925 return err;
1926 mixer->audigy2nx_leds[index] = value;
1927 return changed;
1928 }
1929
1930 static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
1931 {
1932 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1933 .name = "CMSS LED Switch",
1934 .info = snd_audigy2nx_led_info,
1935 .get = snd_audigy2nx_led_get,
1936 .put = snd_audigy2nx_led_put,
1937 .private_value = 0,
1938 },
1939 {
1940 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1941 .name = "Power LED Switch",
1942 .info = snd_audigy2nx_led_info,
1943 .get = snd_audigy2nx_led_get,
1944 .put = snd_audigy2nx_led_put,
1945 .private_value = 1,
1946 },
1947 {
1948 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1949 .name = "Dolby Digital LED Switch",
1950 .info = snd_audigy2nx_led_info,
1951 .get = snd_audigy2nx_led_get,
1952 .put = snd_audigy2nx_led_put,
1953 .private_value = 2,
1954 },
1955 };
1956
1957 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
1958 {
1959 int i, err;
1960
1961 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
1962 if (i > 1 && /* Live24ext has 2 LEDs only */
1963 (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1964 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
1965 break;
1966 err = snd_ctl_add(mixer->chip->card,
1967 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
1968 if (err < 0)
1969 return err;
1970 }
1971 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
1972 return 0;
1973 }
1974
1975 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
1976 struct snd_info_buffer *buffer)
1977 {
1978 static const struct sb_jack {
1979 int unitid;
1980 const char *name;
1981 } jacks_audigy2nx[] = {
1982 {4, "dig in "},
1983 {7, "line in"},
1984 {19, "spk out"},
1985 {20, "hph out"},
1986 {-1, NULL}
1987 }, jacks_live24ext[] = {
1988 {4, "line in"}, /* &1=Line, &2=Mic*/
1989 {3, "hph out"}, /* headphones */
1990 {0, "RC "}, /* last command, 6 bytes see rc_config above */
1991 {-1, NULL}
1992 };
1993 const struct sb_jack *jacks;
1994 struct usb_mixer_interface *mixer = entry->private_data;
1995 int i, err;
1996 u8 buf[3];
1997
1998 snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
1999 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
2000 jacks = jacks_audigy2nx;
2001 else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2002 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
2003 jacks = jacks_live24ext;
2004 else
2005 return;
2006
2007 for (i = 0; jacks[i].name; ++i) {
2008 snd_iprintf(buffer, "%s: ", jacks[i].name);
2009 err = snd_usb_ctl_msg(mixer->chip->dev,
2010 usb_rcvctrlpipe(mixer->chip->dev, 0),
2011 GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
2012 USB_RECIP_INTERFACE, 0,
2013 jacks[i].unitid << 8, buf, 3, 100);
2014 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
2015 snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
2016 else
2017 snd_iprintf(buffer, "?\n");
2018 }
2019 }
2020
2021 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
2022 int ignore_error)
2023 {
2024 static struct snd_device_ops dev_ops = {
2025 .dev_free = snd_usb_mixer_dev_free
2026 };
2027 struct usb_mixer_interface *mixer;
2028 int err;
2029
2030 strcpy(chip->card->mixername, "USB Mixer");
2031
2032 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
2033 if (!mixer)
2034 return -ENOMEM;
2035 mixer->chip = chip;
2036 mixer->ctrlif = ctrlif;
2037 mixer->ignore_ctl_error = ignore_error;
2038 mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
2039 if (!mixer->id_elems) {
2040 kfree(mixer);
2041 return -ENOMEM;
2042 }
2043
2044 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
2045 (err = snd_usb_mixer_status_create(mixer)) < 0)
2046 goto _error;
2047
2048 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
2049 goto _error;
2050
2051 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
2052 mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2053 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
2054 struct snd_info_entry *entry;
2055
2056 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
2057 goto _error;
2058 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
2059 snd_info_set_text_ops(entry, mixer,
2060 snd_audigy2nx_proc_read);
2061 }
2062
2063 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
2064 if (err < 0)
2065 goto _error;
2066 list_add(&mixer->list, &chip->mixer_list);
2067 return 0;
2068
2069 _error:
2070 snd_usb_mixer_free(mixer);
2071 return err;
2072 }
2073
2074 void snd_usb_mixer_disconnect(struct list_head *p)
2075 {
2076 struct usb_mixer_interface *mixer;
2077
2078 mixer = list_entry(p, struct usb_mixer_interface, list);
2079 usb_kill_urb(mixer->urb);
2080 usb_kill_urb(mixer->rc_urb);
2081 }
Support for the Chinese Samsung S3C2440 based development boards