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[PACKET]: Fix sparse warnings in af_packet.c
[linux-2.6/zen-sources.git] / sound / usb / usbmixer.c
blob5e329690cfb1bbe6bb1fab91a36c7c5c1d6656ec
1 /*
2 * (Tentative) USB Audio Driver for ALSA
3 *
4 * Mixer control part
5 *
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
7 *
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
11 *
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 */
28
29 #include <sound/driver.h>
30 #include <linux/bitops.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/string.h>
35 #include <linux/usb.h>
36 #include <sound/core.h>
37 #include <sound/control.h>
38 #include <sound/hwdep.h>
39 #include <sound/info.h>
40 #include <sound/tlv.h>
41
42 #include "usbaudio.h"
43
44 /*
45 */
46
47 /* ignore error from controls - for debugging */
48 /* #define IGNORE_CTL_ERROR */
49
50 /*
51 * Sound Blaster remote control configuration
52 *
53 * format of remote control data:
54 * Extigy: xx 00
55 * Audigy 2 NX: 06 80 xx 00 00 00
56 * Live! 24-bit: 06 80 xx yy 22 83
57 */
58 static const struct rc_config {
59 u32 usb_id;
60 u8 offset;
61 u8 length;
62 u8 packet_length;
63 u8 mute_mixer_id;
64 u32 mute_code;
65 } rc_configs[] = {
66 { USB_ID(0x041e, 0x3000), 0, 1, 2, 18, 0x0013 }, /* Extigy */
67 { USB_ID(0x041e, 0x3020), 2, 1, 6, 18, 0x0013 }, /* Audigy 2 NX */
68 { USB_ID(0x041e, 0x3040), 2, 2, 6, 2, 0x6e91 }, /* Live! 24-bit */
69 };
70
71 struct usb_mixer_interface {
72 struct snd_usb_audio *chip;
73 unsigned int ctrlif;
74 struct list_head list;
75 unsigned int ignore_ctl_error;
76 struct urb *urb;
77 struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */
78
79 /* Sound Blaster remote control stuff */
80 const struct rc_config *rc_cfg;
81 unsigned long rc_hwdep_open;
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 struct usb_mixer_elem_info {
114 struct usb_mixer_interface *mixer;
115 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
116 struct snd_ctl_elem_id *elem_id;
117 unsigned int id;
118 unsigned int control; /* CS or ICN (high byte) */
119 unsigned int cmask; /* channel mask bitmap: 0 = master */
120 int channels;
121 int val_type;
122 int min, max, res;
123 u8 initialized;
124 };
125
126
127 enum {
128 USB_FEATURE_NONE = 0,
129 USB_FEATURE_MUTE = 1,
130 USB_FEATURE_VOLUME,
131 USB_FEATURE_BASS,
132 USB_FEATURE_MID,
133 USB_FEATURE_TREBLE,
134 USB_FEATURE_GEQ,
135 USB_FEATURE_AGC,
136 USB_FEATURE_DELAY,
137 USB_FEATURE_BASSBOOST,
138 USB_FEATURE_LOUDNESS
139 };
140
141 enum {
142 USB_MIXER_BOOLEAN,
143 USB_MIXER_INV_BOOLEAN,
144 USB_MIXER_S8,
145 USB_MIXER_U8,
146 USB_MIXER_S16,
147 USB_MIXER_U16,
148 };
149
150 enum {
151 USB_PROC_UPDOWN = 1,
152 USB_PROC_UPDOWN_SWITCH = 1,
153 USB_PROC_UPDOWN_MODE_SEL = 2,
154
155 USB_PROC_PROLOGIC = 2,
156 USB_PROC_PROLOGIC_SWITCH = 1,
157 USB_PROC_PROLOGIC_MODE_SEL = 2,
158
159 USB_PROC_3DENH = 3,
160 USB_PROC_3DENH_SWITCH = 1,
161 USB_PROC_3DENH_SPACE = 2,
162
163 USB_PROC_REVERB = 4,
164 USB_PROC_REVERB_SWITCH = 1,
165 USB_PROC_REVERB_LEVEL = 2,
166 USB_PROC_REVERB_TIME = 3,
167 USB_PROC_REVERB_DELAY = 4,
168
169 USB_PROC_CHORUS = 5,
170 USB_PROC_CHORUS_SWITCH = 1,
171 USB_PROC_CHORUS_LEVEL = 2,
172 USB_PROC_CHORUS_RATE = 3,
173 USB_PROC_CHORUS_DEPTH = 4,
174
175 USB_PROC_DCR = 6,
176 USB_PROC_DCR_SWITCH = 1,
177 USB_PROC_DCR_RATIO = 2,
178 USB_PROC_DCR_MAX_AMP = 3,
179 USB_PROC_DCR_THRESHOLD = 4,
180 USB_PROC_DCR_ATTACK = 5,
181 USB_PROC_DCR_RELEASE = 6,
182 };
183
184 #define MAX_CHANNELS 10 /* max logical channels */
185
186
187 /*
188 * manual mapping of mixer names
189 * if the mixer topology is too complicated and the parsed names are
190 * ambiguous, add the entries in usbmixer_maps.c.
191 */
192 #include "usbmixer_maps.c"
193
194 /* get the mapped name if the unit matches */
195 static int check_mapped_name(struct mixer_build *state, int unitid, int control, char *buf, int buflen)
196 {
197 const struct usbmix_name_map *p;
198
199 if (! state->map)
200 return 0;
201
202 for (p = state->map; p->id; p++) {
203 if (p->id == unitid && p->name &&
204 (! control || ! p->control || control == p->control)) {
205 buflen--;
206 return strlcpy(buf, p->name, buflen);
207 }
208 }
209 return 0;
210 }
211
212 /* check whether the control should be ignored */
213 static int check_ignored_ctl(struct mixer_build *state, int unitid, int control)
214 {
215 const struct usbmix_name_map *p;
216
217 if (! state->map)
218 return 0;
219 for (p = state->map; p->id; p++) {
220 if (p->id == unitid && ! p->name &&
221 (! control || ! p->control || control == p->control)) {
222 // printk("ignored control %d:%d\n", unitid, control);
223 return 1;
224 }
225 }
226 return 0;
227 }
228
229 /* get the mapped selector source name */
230 static int check_mapped_selector_name(struct mixer_build *state, int unitid,
231 int index, char *buf, int buflen)
232 {
233 const struct usbmix_selector_map *p;
234
235 if (! state->selector_map)
236 return 0;
237 for (p = state->selector_map; p->id; p++) {
238 if (p->id == unitid && index < p->count)
239 return strlcpy(buf, p->names[index], buflen);
240 }
241 return 0;
242 }
243
244 /*
245 * find an audio control unit with the given unit id
246 */
247 static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
248 {
249 unsigned char *p;
250
251 p = NULL;
252 while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
253 USB_DT_CS_INTERFACE)) != NULL) {
254 if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
255 return p;
256 }
257 return NULL;
258 }
259
260
261 /*
262 * copy a string with the given id
263 */
264 static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
265 {
266 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
267 buf[len] = 0;
268 return len;
269 }
270
271 /*
272 * convert from the byte/word on usb descriptor to the zero-based integer
273 */
274 static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
275 {
276 switch (cval->val_type) {
277 case USB_MIXER_BOOLEAN:
278 return !!val;
279 case USB_MIXER_INV_BOOLEAN:
280 return !val;
281 case USB_MIXER_U8:
282 val &= 0xff;
283 break;
284 case USB_MIXER_S8:
285 val &= 0xff;
286 if (val >= 0x80)
287 val -= 0x100;
288 break;
289 case USB_MIXER_U16:
290 val &= 0xffff;
291 break;
292 case USB_MIXER_S16:
293 val &= 0xffff;
294 if (val >= 0x8000)
295 val -= 0x10000;
296 break;
297 }
298 return val;
299 }
300
301 /*
302 * convert from the zero-based int to the byte/word for usb descriptor
303 */
304 static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
305 {
306 switch (cval->val_type) {
307 case USB_MIXER_BOOLEAN:
308 return !!val;
309 case USB_MIXER_INV_BOOLEAN:
310 return !val;
311 case USB_MIXER_S8:
312 case USB_MIXER_U8:
313 return val & 0xff;
314 case USB_MIXER_S16:
315 case USB_MIXER_U16:
316 return val & 0xffff;
317 }
318 return 0; /* not reached */
319 }
320
321 static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
322 {
323 if (! cval->res)
324 cval->res = 1;
325 if (val < cval->min)
326 return 0;
327 else if (val >= cval->max)
328 return (cval->max - cval->min + cval->res - 1) / cval->res;
329 else
330 return (val - cval->min) / cval->res;
331 }
332
333 static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
334 {
335 if (val < 0)
336 return cval->min;
337 if (! cval->res)
338 cval->res = 1;
339 val *= cval->res;
340 val += cval->min;
341 if (val > cval->max)
342 return cval->max;
343 return val;
344 }
345
346
347 /*
348 * retrieve a mixer value
349 */
350
351 static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
352 {
353 unsigned char buf[2];
354 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
355 int timeout = 10;
356
357 while (timeout-- > 0) {
358 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
359 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
360 request,
361 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
362 validx, cval->mixer->ctrlif | (cval->id << 8),
363 buf, val_len, 100) >= val_len) {
364 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
365 return 0;
366 }
367 }
368 snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
369 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
370 return -EINVAL;
371 }
372
373 static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
374 {
375 return get_ctl_value(cval, GET_CUR, validx, value);
376 }
377
378 /* channel = 0: master, 1 = first channel */
379 static inline int get_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, int *value)
380 {
381 return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value);
382 }
383
384 /*
385 * set a mixer value
386 */
387
388 static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
389 {
390 unsigned char buf[2];
391 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
392 int timeout = 10;
393
394 value_set = convert_bytes_value(cval, value_set);
395 buf[0] = value_set & 0xff;
396 buf[1] = (value_set >> 8) & 0xff;
397 while (timeout -- > 0)
398 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
399 usb_sndctrlpipe(cval->mixer->chip->dev, 0),
400 request,
401 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
402 validx, cval->mixer->ctrlif | (cval->id << 8),
403 buf, val_len, 100) >= 0)
404 return 0;
405 snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
406 request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
407 return -EINVAL;
408 }
409
410 static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
411 {
412 return set_ctl_value(cval, SET_CUR, validx, value);
413 }
414
415 static inline int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, int value)
416 {
417 return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value);
418 }
419
420 /*
421 * TLV callback for mixer volume controls
422 */
423 static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
424 unsigned int size, unsigned int __user *_tlv)
425 {
426 struct usb_mixer_elem_info *cval = kcontrol->private_data;
427 DECLARE_TLV_DB_SCALE(scale, 0, 0, 0);
428
429 if (size < sizeof(scale))
430 return -ENOMEM;
431 /* USB descriptions contain the dB scale in 1/256 dB unit
432 * while ALSA TLV contains in 1/100 dB unit
433 */
434 scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256;
435 scale[3] = (convert_signed_value(cval, cval->res) * 100) / 256;
436 if (copy_to_user(_tlv, scale, sizeof(scale)))
437 return -EFAULT;
438 return 0;
439 }
440
441 /*
442 * parser routines begin here...
443 */
444
445 static int parse_audio_unit(struct mixer_build *state, int unitid);
446
447
448 /*
449 * check if the input/output channel routing is enabled on the given bitmap.
450 * used for mixer unit parser
451 */
452 static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
453 {
454 int idx = ich * num_outs + och;
455 return bmap[idx >> 3] & (0x80 >> (idx & 7));
456 }
457
458
459 /*
460 * add an alsa control element
461 * search and increment the index until an empty slot is found.
462 *
463 * if failed, give up and free the control instance.
464 */
465
466 static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl)
467 {
468 struct usb_mixer_elem_info *cval = kctl->private_data;
469 int err;
470
471 while (snd_ctl_find_id(state->chip->card, &kctl->id))
472 kctl->id.index++;
473 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
474 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
475 return err;
476 }
477 cval->elem_id = &kctl->id;
478 cval->next_id_elem = state->mixer->id_elems[cval->id];
479 state->mixer->id_elems[cval->id] = cval;
480 return 0;
481 }
482
483
484 /*
485 * get a terminal name string
486 */
487
488 static struct iterm_name_combo {
489 int type;
490 char *name;
491 } iterm_names[] = {
492 { 0x0300, "Output" },
493 { 0x0301, "Speaker" },
494 { 0x0302, "Headphone" },
495 { 0x0303, "HMD Audio" },
496 { 0x0304, "Desktop Speaker" },
497 { 0x0305, "Room Speaker" },
498 { 0x0306, "Com Speaker" },
499 { 0x0307, "LFE" },
500 { 0x0600, "External In" },
501 { 0x0601, "Analog In" },
502 { 0x0602, "Digital In" },
503 { 0x0603, "Line" },
504 { 0x0604, "Legacy In" },
505 { 0x0605, "IEC958 In" },
506 { 0x0606, "1394 DA Stream" },
507 { 0x0607, "1394 DV Stream" },
508 { 0x0700, "Embedded" },
509 { 0x0701, "Noise Source" },
510 { 0x0702, "Equalization Noise" },
511 { 0x0703, "CD" },
512 { 0x0704, "DAT" },
513 { 0x0705, "DCC" },
514 { 0x0706, "MiniDisk" },
515 { 0x0707, "Analog Tape" },
516 { 0x0708, "Phonograph" },
517 { 0x0709, "VCR Audio" },
518 { 0x070a, "Video Disk Audio" },
519 { 0x070b, "DVD Audio" },
520 { 0x070c, "TV Tuner Audio" },
521 { 0x070d, "Satellite Rec Audio" },
522 { 0x070e, "Cable Tuner Audio" },
523 { 0x070f, "DSS Audio" },
524 { 0x0710, "Radio Receiver" },
525 { 0x0711, "Radio Transmitter" },
526 { 0x0712, "Multi-Track Recorder" },
527 { 0x0713, "Synthesizer" },
528 { 0 },
529 };
530
531 static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
532 unsigned char *name, int maxlen, int term_only)
533 {
534 struct iterm_name_combo *names;
535
536 if (iterm->name)
537 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
538
539 /* virtual type - not a real terminal */
540 if (iterm->type >> 16) {
541 if (term_only)
542 return 0;
543 switch (iterm->type >> 16) {
544 case SELECTOR_UNIT:
545 strcpy(name, "Selector"); return 8;
546 case PROCESSING_UNIT:
547 strcpy(name, "Process Unit"); return 12;
548 case EXTENSION_UNIT:
549 strcpy(name, "Ext Unit"); return 8;
550 case MIXER_UNIT:
551 strcpy(name, "Mixer"); return 5;
552 default:
553 return sprintf(name, "Unit %d", iterm->id);
554 }
555 }
556
557 switch (iterm->type & 0xff00) {
558 case 0x0100:
559 strcpy(name, "PCM"); return 3;
560 case 0x0200:
561 strcpy(name, "Mic"); return 3;
562 case 0x0400:
563 strcpy(name, "Headset"); return 7;
564 case 0x0500:
565 strcpy(name, "Phone"); return 5;
566 }
567
568 for (names = iterm_names; names->type; names++)
569 if (names->type == iterm->type) {
570 strcpy(name, names->name);
571 return strlen(names->name);
572 }
573 return 0;
574 }
575
576
577 /*
578 * parse the source unit recursively until it reaches to a terminal
579 * or a branched unit.
580 */
581 static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
582 {
583 unsigned char *p1;
584
585 memset(term, 0, sizeof(*term));
586 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
587 term->id = id;
588 switch (p1[2]) {
589 case INPUT_TERMINAL:
590 term->type = combine_word(p1 + 4);
591 term->channels = p1[7];
592 term->chconfig = combine_word(p1 + 8);
593 term->name = p1[11];
594 return 0;
595 case FEATURE_UNIT:
596 id = p1[4];
597 break; /* continue to parse */
598 case MIXER_UNIT:
599 term->type = p1[2] << 16; /* virtual type */
600 term->channels = p1[5 + p1[4]];
601 term->chconfig = combine_word(p1 + 6 + p1[4]);
602 term->name = p1[p1[0] - 1];
603 return 0;
604 case SELECTOR_UNIT:
605 /* call recursively to retrieve the channel info */
606 if (check_input_term(state, p1[5], term) < 0)
607 return -ENODEV;
608 term->type = p1[2] << 16; /* virtual type */
609 term->id = id;
610 term->name = p1[9 + p1[0] - 1];
611 return 0;
612 case PROCESSING_UNIT:
613 case EXTENSION_UNIT:
614 if (p1[6] == 1) {
615 id = p1[7];
616 break; /* continue to parse */
617 }
618 term->type = p1[2] << 16; /* virtual type */
619 term->channels = p1[7 + p1[6]];
620 term->chconfig = combine_word(p1 + 8 + p1[6]);
621 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
622 return 0;
623 default:
624 return -ENODEV;
625 }
626 }
627 return -ENODEV;
628 }
629
630
631 /*
632 * Feature Unit
633 */
634
635 /* feature unit control information */
636 struct usb_feature_control_info {
637 const char *name;
638 unsigned int type; /* control type (mute, volume, etc.) */
639 };
640
641 static struct usb_feature_control_info audio_feature_info[] = {
642 { "Mute", USB_MIXER_INV_BOOLEAN },
643 { "Volume", USB_MIXER_S16 },
644 { "Tone Control - Bass", USB_MIXER_S8 },
645 { "Tone Control - Mid", USB_MIXER_S8 },
646 { "Tone Control - Treble", USB_MIXER_S8 },
647 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
648 { "Auto Gain Control", USB_MIXER_BOOLEAN },
649 { "Delay Control", USB_MIXER_U16 },
650 { "Bass Boost", USB_MIXER_BOOLEAN },
651 { "Loudness", USB_MIXER_BOOLEAN },
652 };
653
654
655 /* private_free callback */
656 static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
657 {
658 kfree(kctl->private_data);
659 kctl->private_data = NULL;
660 }
661
662
663 /*
664 * interface to ALSA control for feature/mixer units
665 */
666
667 /*
668 * retrieve the minimum and maximum values for the specified control
669 */
670 static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
671 {
672 /* for failsafe */
673 cval->min = default_min;
674 cval->max = cval->min + 1;
675 cval->res = 1;
676
677 if (cval->val_type == USB_MIXER_BOOLEAN ||
678 cval->val_type == USB_MIXER_INV_BOOLEAN) {
679 cval->initialized = 1;
680 } else {
681 int minchn = 0;
682 if (cval->cmask) {
683 int i;
684 for (i = 0; i < MAX_CHANNELS; i++)
685 if (cval->cmask & (1 << i)) {
686 minchn = i + 1;
687 break;
688 }
689 }
690 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
691 get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
692 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
693 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
694 return -EINVAL;
695 }
696 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
697 cval->res = 1;
698 } else {
699 int last_valid_res = cval->res;
700
701 while (cval->res > 1) {
702 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
703 break;
704 cval->res /= 2;
705 }
706 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
707 cval->res = last_valid_res;
708 }
709 if (cval->res == 0)
710 cval->res = 1;
711
712 /* Additional checks for the proper resolution
713 *
714 * Some devices report smaller resolutions than actually
715 * reacting. They don't return errors but simply clip
716 * to the lower aligned value.
717 */
718 if (cval->min + cval->res < cval->max) {
719 int last_valid_res = cval->res;
720 int saved, test, check;
721 get_cur_mix_value(cval, minchn, &saved);
722 for (;;) {
723 test = saved;
724 if (test < cval->max)
725 test += cval->res;
726 else
727 test -= cval->res;
728 if (test < cval->min || test > cval->max ||
729 set_cur_mix_value(cval, minchn, test) ||
730 get_cur_mix_value(cval, minchn, &check)) {
731 cval->res = last_valid_res;
732 break;
733 }
734 if (test == check)
735 break;
736 cval->res *= 2;
737 }
738 set_cur_mix_value(cval, minchn, saved);
739 }
740
741 cval->initialized = 1;
742 }
743 return 0;
744 }
745
746
747 /* get a feature/mixer unit info */
748 static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
749 {
750 struct usb_mixer_elem_info *cval = kcontrol->private_data;
751
752 if (cval->val_type == USB_MIXER_BOOLEAN ||
753 cval->val_type == USB_MIXER_INV_BOOLEAN)
754 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
755 else
756 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
757 uinfo->count = cval->channels;
758 if (cval->val_type == USB_MIXER_BOOLEAN ||
759 cval->val_type == USB_MIXER_INV_BOOLEAN) {
760 uinfo->value.integer.min = 0;
761 uinfo->value.integer.max = 1;
762 } else {
763 if (! cval->initialized)
764 get_min_max(cval, 0);
765 uinfo->value.integer.min = 0;
766 uinfo->value.integer.max =
767 (cval->max - cval->min + cval->res - 1) / cval->res;
768 }
769 return 0;
770 }
771
772 /* get the current value from feature/mixer unit */
773 static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
774 {
775 struct usb_mixer_elem_info *cval = kcontrol->private_data;
776 int c, cnt, val, err;
777
778 if (cval->cmask) {
779 cnt = 0;
780 for (c = 0; c < MAX_CHANNELS; c++) {
781 if (cval->cmask & (1 << c)) {
782 err = get_cur_mix_value(cval, c + 1, &val);
783 if (err < 0) {
784 if (cval->mixer->ignore_ctl_error) {
785 ucontrol->value.integer.value[0] = cval->min;
786 return 0;
787 }
788 snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err);
789 return err;
790 }
791 val = get_relative_value(cval, val);
792 ucontrol->value.integer.value[cnt] = val;
793 cnt++;
794 }
795 }
796 } else {
797 /* master channel */
798 err = get_cur_mix_value(cval, 0, &val);
799 if (err < 0) {
800 if (cval->mixer->ignore_ctl_error) {
801 ucontrol->value.integer.value[0] = cval->min;
802 return 0;
803 }
804 snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err);
805 return err;
806 }
807 val = get_relative_value(cval, val);
808 ucontrol->value.integer.value[0] = val;
809 }
810 return 0;
811 }
812
813 /* put the current value to feature/mixer unit */
814 static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
815 {
816 struct usb_mixer_elem_info *cval = kcontrol->private_data;
817 int c, cnt, val, oval, err;
818 int changed = 0;
819
820 if (cval->cmask) {
821 cnt = 0;
822 for (c = 0; c < MAX_CHANNELS; c++) {
823 if (cval->cmask & (1 << c)) {
824 err = get_cur_mix_value(cval, c + 1, &oval);
825 if (err < 0) {
826 if (cval->mixer->ignore_ctl_error)
827 return 0;
828 return err;
829 }
830 val = ucontrol->value.integer.value[cnt];
831 val = get_abs_value(cval, val);
832 if (oval != val) {
833 set_cur_mix_value(cval, c + 1, val);
834 changed = 1;
835 }
836 get_cur_mix_value(cval, c + 1, &val);
837 cnt++;
838 }
839 }
840 } else {
841 /* master channel */
842 err = get_cur_mix_value(cval, 0, &oval);
843 if (err < 0 && cval->mixer->ignore_ctl_error)
844 return 0;
845 if (err < 0)
846 return err;
847 val = ucontrol->value.integer.value[0];
848 val = get_abs_value(cval, val);
849 if (val != oval) {
850 set_cur_mix_value(cval, 0, val);
851 changed = 1;
852 }
853 }
854 return changed;
855 }
856
857 static struct snd_kcontrol_new usb_feature_unit_ctl = {
858 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
859 .name = "", /* will be filled later manually */
860 .info = mixer_ctl_feature_info,
861 .get = mixer_ctl_feature_get,
862 .put = mixer_ctl_feature_put,
863 };
864
865
866 /*
867 * build a feature control
868 */
869
870 static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
871 unsigned int ctl_mask, int control,
872 struct usb_audio_term *iterm, int unitid)
873 {
874 unsigned int len = 0;
875 int mapped_name = 0;
876 int nameid = desc[desc[0] - 1];
877 struct snd_kcontrol *kctl;
878 struct usb_mixer_elem_info *cval;
879
880 control++; /* change from zero-based to 1-based value */
881
882 if (control == USB_FEATURE_GEQ) {
883 /* FIXME: not supported yet */
884 return;
885 }
886
887 if (check_ignored_ctl(state, unitid, control))
888 return;
889
890 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
891 if (! cval) {
892 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
893 return;
894 }
895 cval->mixer = state->mixer;
896 cval->id = unitid;
897 cval->control = control;
898 cval->cmask = ctl_mask;
899 cval->val_type = audio_feature_info[control-1].type;
900 if (ctl_mask == 0)
901 cval->channels = 1; /* master channel */
902 else {
903 int i, c = 0;
904 for (i = 0; i < 16; i++)
905 if (ctl_mask & (1 << i))
906 c++;
907 cval->channels = c;
908 }
909
910 /* get min/max values */
911 get_min_max(cval, 0);
912
913 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
914 if (! kctl) {
915 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
916 kfree(cval);
917 return;
918 }
919 kctl->private_free = usb_mixer_elem_free;
920
921 len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
922 mapped_name = len != 0;
923 if (! len && nameid)
924 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
925
926 switch (control) {
927 case USB_FEATURE_MUTE:
928 case USB_FEATURE_VOLUME:
929 /* determine the control name. the rule is:
930 * - if a name id is given in descriptor, use it.
931 * - if the connected input can be determined, then use the name
932 * of terminal type.
933 * - if the connected output can be determined, use it.
934 * - otherwise, anonymous name.
935 */
936 if (! len) {
937 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
938 if (! len)
939 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
940 if (! len)
941 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
942 "Feature %d", unitid);
943 }
944 /* determine the stream direction:
945 * if the connected output is USB stream, then it's likely a
946 * capture stream. otherwise it should be playback (hopefully :)
947 */
948 if (! mapped_name && ! (state->oterm.type >> 16)) {
949 if ((state->oterm.type & 0xff00) == 0x0100) {
950 len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name));
951 } else {
952 len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name));
953 }
954 }
955 strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
956 sizeof(kctl->id.name));
957 if (control == USB_FEATURE_VOLUME) {
958 kctl->tlv.c = mixer_vol_tlv;
959 kctl->vd[0].access |=
960 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
961 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
962 }
963 break;
964
965 default:
966 if (! len)
967 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
968 sizeof(kctl->id.name));
969 break;
970 }
971
972 /* quirk for UDA1321/N101 */
973 /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
974 /* is not very clear from datasheets */
975 /* I hope that the min value is -15360 for newer firmware --jk */
976 switch (state->chip->usb_id) {
977 case USB_ID(0x0471, 0x0101):
978 case USB_ID(0x0471, 0x0104):
979 case USB_ID(0x0471, 0x0105):
980 case USB_ID(0x0672, 0x1041):
981 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
982 cval->min == -15616) {
983 snd_printk(KERN_INFO "using volume control quirk for the UDA1321/N101 chip\n");
984 cval->max = -256;
985 }
986 }
987
988 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
989 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
990 add_control_to_empty(state, kctl);
991 }
992
993
994
995 /*
996 * parse a feature unit
997 *
998 * most of controlls are defined here.
999 */
1000 static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsigned char *ftr)
1001 {
1002 int channels, i, j;
1003 struct usb_audio_term iterm;
1004 unsigned int master_bits, first_ch_bits;
1005 int err, csize;
1006
1007 if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
1008 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
1009 return -EINVAL;
1010 }
1011
1012 /* parse the source unit */
1013 if ((err = parse_audio_unit(state, ftr[4])) < 0)
1014 return err;
1015
1016 /* determine the input source type and name */
1017 if (check_input_term(state, ftr[4], &iterm) < 0)
1018 return -EINVAL;
1019
1020 channels = (ftr[0] - 7) / csize - 1;
1021
1022 master_bits = snd_usb_combine_bytes(ftr + 6, csize);
1023 if (channels > 0)
1024 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
1025 else
1026 first_ch_bits = 0;
1027 /* check all control types */
1028 for (i = 0; i < 10; i++) {
1029 unsigned int ch_bits = 0;
1030 for (j = 0; j < channels; j++) {
1031 unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize);
1032 if (mask & (1 << i))
1033 ch_bits |= (1 << j);
1034 }
1035 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
1036 build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid);
1037 if (master_bits & (1 << i))
1038 build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
1039 }
1040
1041 return 0;
1042 }
1043
1044
1045 /*
1046 * Mixer Unit
1047 */
1048
1049 /*
1050 * build a mixer unit control
1051 *
1052 * the callbacks are identical with feature unit.
1053 * input channel number (zero based) is given in control field instead.
1054 */
1055
1056 static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
1057 int in_pin, int in_ch, int unitid,
1058 struct usb_audio_term *iterm)
1059 {
1060 struct usb_mixer_elem_info *cval;
1061 unsigned int input_pins = desc[4];
1062 unsigned int num_outs = desc[5 + input_pins];
1063 unsigned int i, len;
1064 struct snd_kcontrol *kctl;
1065
1066 if (check_ignored_ctl(state, unitid, 0))
1067 return;
1068
1069 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1070 if (! cval)
1071 return;
1072
1073 cval->mixer = state->mixer;
1074 cval->id = unitid;
1075 cval->control = in_ch + 1; /* based on 1 */
1076 cval->val_type = USB_MIXER_S16;
1077 for (i = 0; i < num_outs; i++) {
1078 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1079 cval->cmask |= (1 << i);
1080 cval->channels++;
1081 }
1082 }
1083
1084 /* get min/max values */
1085 get_min_max(cval, 0);
1086
1087 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1088 if (! kctl) {
1089 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1090 kfree(cval);
1091 return;
1092 }
1093 kctl->private_free = usb_mixer_elem_free;
1094
1095 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1096 if (! len)
1097 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1098 if (! len)
1099 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1100 strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name));
1101
1102 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1103 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1104 add_control_to_empty(state, kctl);
1105 }
1106
1107
1108 /*
1109 * parse a mixer unit
1110 */
1111 static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1112 {
1113 struct usb_audio_term iterm;
1114 int input_pins, num_ins, num_outs;
1115 int pin, ich, err;
1116
1117 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1118 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1119 return -EINVAL;
1120 }
1121 /* no bmControls field (e.g. Maya44) -> ignore */
1122 if (desc[0] <= 10 + input_pins) {
1123 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1124 return 0;
1125 }
1126
1127 num_ins = 0;
1128 ich = 0;
1129 for (pin = 0; pin < input_pins; pin++) {
1130 err = parse_audio_unit(state, desc[5 + pin]);
1131 if (err < 0)
1132 return err;
1133 err = check_input_term(state, desc[5 + pin], &iterm);
1134 if (err < 0)
1135 return err;
1136 num_ins += iterm.channels;
1137 for (; ich < num_ins; ++ich) {
1138 int och, ich_has_controls = 0;
1139
1140 for (och = 0; och < num_outs; ++och) {
1141 if (check_matrix_bitmap(desc + 9 + input_pins,
1142 ich, och, num_outs)) {
1143 ich_has_controls = 1;
1144 break;
1145 }
1146 }
1147 if (ich_has_controls)
1148 build_mixer_unit_ctl(state, desc, pin, ich,
1149 unitid, &iterm);
1150 }
1151 }
1152 return 0;
1153 }
1154
1155
1156 /*
1157 * Processing Unit / Extension Unit
1158 */
1159
1160 /* get callback for processing/extension unit */
1161 static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1162 {
1163 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1164 int err, val;
1165
1166 err = get_cur_ctl_value(cval, cval->control << 8, &val);
1167 if (err < 0 && cval->mixer->ignore_ctl_error) {
1168 ucontrol->value.integer.value[0] = cval->min;
1169 return 0;
1170 }
1171 if (err < 0)
1172 return err;
1173 val = get_relative_value(cval, val);
1174 ucontrol->value.integer.value[0] = val;
1175 return 0;
1176 }
1177
1178 /* put callback for processing/extension unit */
1179 static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1180 {
1181 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1182 int val, oval, err;
1183
1184 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1185 if (err < 0) {
1186 if (cval->mixer->ignore_ctl_error)
1187 return 0;
1188 return err;
1189 }
1190 val = ucontrol->value.integer.value[0];
1191 val = get_abs_value(cval, val);
1192 if (val != oval) {
1193 set_cur_ctl_value(cval, cval->control << 8, val);
1194 return 1;
1195 }
1196 return 0;
1197 }
1198
1199 /* alsa control interface for processing/extension unit */
1200 static struct snd_kcontrol_new mixer_procunit_ctl = {
1201 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1202 .name = "", /* will be filled later */
1203 .info = mixer_ctl_feature_info,
1204 .get = mixer_ctl_procunit_get,
1205 .put = mixer_ctl_procunit_put,
1206 };
1207
1208
1209 /*
1210 * predefined data for processing units
1211 */
1212 struct procunit_value_info {
1213 int control;
1214 char *suffix;
1215 int val_type;
1216 int min_value;
1217 };
1218
1219 struct procunit_info {
1220 int type;
1221 char *name;
1222 struct procunit_value_info *values;
1223 };
1224
1225 static struct procunit_value_info updown_proc_info[] = {
1226 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1227 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1228 { 0 }
1229 };
1230 static struct procunit_value_info prologic_proc_info[] = {
1231 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1232 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1233 { 0 }
1234 };
1235 static struct procunit_value_info threed_enh_proc_info[] = {
1236 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1237 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1238 { 0 }
1239 };
1240 static struct procunit_value_info reverb_proc_info[] = {
1241 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1242 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1243 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1244 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1245 { 0 }
1246 };
1247 static struct procunit_value_info chorus_proc_info[] = {
1248 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1249 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1250 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1251 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1252 { 0 }
1253 };
1254 static struct procunit_value_info dcr_proc_info[] = {
1255 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1256 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1257 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1258 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1259 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1260 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1261 { 0 }
1262 };
1263
1264 static struct procunit_info procunits[] = {
1265 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1266 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1267 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1268 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1269 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1270 { USB_PROC_DCR, "DCR", dcr_proc_info },
1271 { 0 },
1272 };
1273
1274 /*
1275 * build a processing/extension unit
1276 */
1277 static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1278 {
1279 int num_ins = dsc[6];
1280 struct usb_mixer_elem_info *cval;
1281 struct snd_kcontrol *kctl;
1282 int i, err, nameid, type, len;
1283 struct procunit_info *info;
1284 struct procunit_value_info *valinfo;
1285 static struct procunit_value_info default_value_info[] = {
1286 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1287 { 0 }
1288 };
1289 static struct procunit_info default_info = {
1290 0, NULL, default_value_info
1291 };
1292
1293 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1294 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1295 return -EINVAL;
1296 }
1297
1298 for (i = 0; i < num_ins; i++) {
1299 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1300 return err;
1301 }
1302
1303 type = combine_word(&dsc[4]);
1304 for (info = list; info && info->type; info++)
1305 if (info->type == type)
1306 break;
1307 if (! info || ! info->type)
1308 info = &default_info;
1309
1310 for (valinfo = info->values; valinfo->control; valinfo++) {
1311 /* FIXME: bitmap might be longer than 8bit */
1312 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1313 continue;
1314 if (check_ignored_ctl(state, unitid, valinfo->control))
1315 continue;
1316 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1317 if (! cval) {
1318 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1319 return -ENOMEM;
1320 }
1321 cval->mixer = state->mixer;
1322 cval->id = unitid;
1323 cval->control = valinfo->control;
1324 cval->val_type = valinfo->val_type;
1325 cval->channels = 1;
1326
1327 /* get min/max values */
1328 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1329 /* FIXME: hard-coded */
1330 cval->min = 1;
1331 cval->max = dsc[15];
1332 cval->res = 1;
1333 cval->initialized = 1;
1334 } else
1335 get_min_max(cval, valinfo->min_value);
1336
1337 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1338 if (! kctl) {
1339 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1340 kfree(cval);
1341 return -ENOMEM;
1342 }
1343 kctl->private_free = usb_mixer_elem_free;
1344
1345 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
1346 ;
1347 else if (info->name)
1348 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1349 else {
1350 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1351 len = 0;
1352 if (nameid)
1353 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1354 if (! len)
1355 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1356 }
1357 strlcat(kctl->id.name, " ", sizeof(kctl->id.name));
1358 strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name));
1359
1360 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1361 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1362 if ((err = add_control_to_empty(state, kctl)) < 0)
1363 return err;
1364 }
1365 return 0;
1366 }
1367
1368
1369 static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1370 {
1371 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1372 }
1373
1374 static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1375 {
1376 return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
1377 }
1378
1379
1380 /*
1381 * Selector Unit
1382 */
1383
1384 /* info callback for selector unit
1385 * use an enumerator type for routing
1386 */
1387 static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1388 {
1389 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1390 char **itemlist = (char **)kcontrol->private_value;
1391
1392 snd_assert(itemlist, return -EINVAL);
1393 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1394 uinfo->count = 1;
1395 uinfo->value.enumerated.items = cval->max;
1396 if ((int)uinfo->value.enumerated.item >= cval->max)
1397 uinfo->value.enumerated.item = cval->max - 1;
1398 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1399 return 0;
1400 }
1401
1402 /* get callback for selector unit */
1403 static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1404 {
1405 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1406 int val, err;
1407
1408 err = get_cur_ctl_value(cval, 0, &val);
1409 if (err < 0) {
1410 if (cval->mixer->ignore_ctl_error) {
1411 ucontrol->value.enumerated.item[0] = 0;
1412 return 0;
1413 }
1414 return err;
1415 }
1416 val = get_relative_value(cval, val);
1417 ucontrol->value.enumerated.item[0] = val;
1418 return 0;
1419 }
1420
1421 /* put callback for selector unit */
1422 static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1423 {
1424 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1425 int val, oval, err;
1426
1427 err = get_cur_ctl_value(cval, 0, &oval);
1428 if (err < 0) {
1429 if (cval->mixer->ignore_ctl_error)
1430 return 0;
1431 return err;
1432 }
1433 val = ucontrol->value.enumerated.item[0];
1434 val = get_abs_value(cval, val);
1435 if (val != oval) {
1436 set_cur_ctl_value(cval, 0, val);
1437 return 1;
1438 }
1439 return 0;
1440 }
1441
1442 /* alsa control interface for selector unit */
1443 static struct snd_kcontrol_new mixer_selectunit_ctl = {
1444 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1445 .name = "", /* will be filled later */
1446 .info = mixer_ctl_selector_info,
1447 .get = mixer_ctl_selector_get,
1448 .put = mixer_ctl_selector_put,
1449 };
1450
1451
1452 /* private free callback.
1453 * free both private_data and private_value
1454 */
1455 static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1456 {
1457 int i, num_ins = 0;
1458
1459 if (kctl->private_data) {
1460 struct usb_mixer_elem_info *cval = kctl->private_data;
1461 num_ins = cval->max;
1462 kfree(cval);
1463 kctl->private_data = NULL;
1464 }
1465 if (kctl->private_value) {
1466 char **itemlist = (char **)kctl->private_value;
1467 for (i = 0; i < num_ins; i++)
1468 kfree(itemlist[i]);
1469 kfree(itemlist);
1470 kctl->private_value = 0;
1471 }
1472 }
1473
1474 /*
1475 * parse a selector unit
1476 */
1477 static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1478 {
1479 unsigned int num_ins = desc[4];
1480 unsigned int i, nameid, len;
1481 int err;
1482 struct usb_mixer_elem_info *cval;
1483 struct snd_kcontrol *kctl;
1484 char **namelist;
1485
1486 if (! num_ins || desc[0] < 5 + num_ins) {
1487 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1488 return -EINVAL;
1489 }
1490
1491 for (i = 0; i < num_ins; i++) {
1492 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1493 return err;
1494 }
1495
1496 if (num_ins == 1) /* only one ? nonsense! */
1497 return 0;
1498
1499 if (check_ignored_ctl(state, unitid, 0))
1500 return 0;
1501
1502 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1503 if (! cval) {
1504 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1505 return -ENOMEM;
1506 }
1507 cval->mixer = state->mixer;
1508 cval->id = unitid;
1509 cval->val_type = USB_MIXER_U8;
1510 cval->channels = 1;
1511 cval->min = 1;
1512 cval->max = num_ins;
1513 cval->res = 1;
1514 cval->initialized = 1;
1515
1516 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1517 if (! namelist) {
1518 snd_printk(KERN_ERR "cannot malloc\n");
1519 kfree(cval);
1520 return -ENOMEM;
1521 }
1522 #define MAX_ITEM_NAME_LEN 64
1523 for (i = 0; i < num_ins; i++) {
1524 struct usb_audio_term iterm;
1525 len = 0;
1526 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1527 if (! namelist[i]) {
1528 snd_printk(KERN_ERR "cannot malloc\n");
1529 while (i--)
1530 kfree(namelist[i]);
1531 kfree(namelist);
1532 kfree(cval);
1533 return -ENOMEM;
1534 }
1535 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1536 MAX_ITEM_NAME_LEN);
1537 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1538 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1539 if (! len)
1540 sprintf(namelist[i], "Input %d", i);
1541 }
1542
1543 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1544 if (! kctl) {
1545 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1546 kfree(namelist);
1547 kfree(cval);
1548 return -ENOMEM;
1549 }
1550 kctl->private_value = (unsigned long)namelist;
1551 kctl->private_free = usb_mixer_selector_elem_free;
1552
1553 nameid = desc[desc[0] - 1];
1554 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1555 if (len)
1556 ;
1557 else if (nameid)
1558 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1559 else {
1560 len = get_term_name(state, &state->oterm,
1561 kctl->id.name, sizeof(kctl->id.name), 0);
1562 if (! len)
1563 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1564
1565 if ((state->oterm.type & 0xff00) == 0x0100)
1566 strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name));
1567 else
1568 strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name));
1569 }
1570
1571 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1572 cval->id, kctl->id.name, num_ins);
1573 if ((err = add_control_to_empty(state, kctl)) < 0)
1574 return err;
1575
1576 return 0;
1577 }
1578
1579
1580 /*
1581 * parse an audio unit recursively
1582 */
1583
1584 static int parse_audio_unit(struct mixer_build *state, int unitid)
1585 {
1586 unsigned char *p1;
1587
1588 if (test_and_set_bit(unitid, state->unitbitmap))
1589 return 0; /* the unit already visited */
1590
1591 p1 = find_audio_control_unit(state, unitid);
1592 if (!p1) {
1593 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1594 return -EINVAL;
1595 }
1596
1597 switch (p1[2]) {
1598 case INPUT_TERMINAL:
1599 return 0; /* NOP */
1600 case MIXER_UNIT:
1601 return parse_audio_mixer_unit(state, unitid, p1);
1602 case SELECTOR_UNIT:
1603 return parse_audio_selector_unit(state, unitid, p1);
1604 case FEATURE_UNIT:
1605 return parse_audio_feature_unit(state, unitid, p1);
1606 case PROCESSING_UNIT:
1607 return parse_audio_processing_unit(state, unitid, p1);
1608 case EXTENSION_UNIT:
1609 return parse_audio_extension_unit(state, unitid, p1);
1610 default:
1611 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1612 return -EINVAL;
1613 }
1614 }
1615
1616 static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1617 {
1618 kfree(mixer->id_elems);
1619 if (mixer->urb) {
1620 kfree(mixer->urb->transfer_buffer);
1621 usb_free_urb(mixer->urb);
1622 }
1623 usb_free_urb(mixer->rc_urb);
1624 kfree(mixer->rc_setup_packet);
1625 kfree(mixer);
1626 }
1627
1628 static int snd_usb_mixer_dev_free(struct snd_device *device)
1629 {
1630 struct usb_mixer_interface *mixer = device->device_data;
1631 snd_usb_mixer_free(mixer);
1632 return 0;
1633 }
1634
1635 /*
1636 * create mixer controls
1637 *
1638 * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1639 */
1640 static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1641 {
1642 unsigned char *desc;
1643 struct mixer_build state;
1644 int err;
1645 const struct usbmix_ctl_map *map;
1646 struct usb_host_interface *hostif;
1647
1648 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1649 memset(&state, 0, sizeof(state));
1650 state.chip = mixer->chip;
1651 state.mixer = mixer;
1652 state.buffer = hostif->extra;
1653 state.buflen = hostif->extralen;
1654
1655 /* check the mapping table */
1656 for (map = usbmix_ctl_maps; map->id; map++) {
1657 if (map->id == state.chip->usb_id) {
1658 state.map = map->map;
1659 state.selector_map = map->selector_map;
1660 mixer->ignore_ctl_error = map->ignore_ctl_error;
1661 break;
1662 }
1663 }
1664
1665 desc = NULL;
1666 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
1667 if (desc[0] < 9)
1668 continue; /* invalid descriptor? */
1669 set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */
1670 state.oterm.id = desc[3];
1671 state.oterm.type = combine_word(&desc[4]);
1672 state.oterm.name = desc[8];
1673 err = parse_audio_unit(&state, desc[7]);
1674 if (err < 0)
1675 return err;
1676 }
1677 return 0;
1678 }
1679
1680 static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1681 int unitid)
1682 {
1683 struct usb_mixer_elem_info *info;
1684
1685 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1686 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1687 info->elem_id);
1688 }
1689
1690 static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1691 int unitid)
1692 {
1693 if (!mixer->rc_cfg)
1694 return;
1695 /* unit ids specific to Extigy/Audigy 2 NX: */
1696 switch (unitid) {
1697 case 0: /* remote control */
1698 mixer->rc_urb->dev = mixer->chip->dev;
1699 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1700 break;
1701 case 4: /* digital in jack */
1702 case 7: /* line in jacks */
1703 case 19: /* speaker out jacks */
1704 case 20: /* headphones out jack */
1705 break;
1706 default:
1707 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
1708 break;
1709 }
1710 }
1711
1712 static void snd_usb_mixer_status_complete(struct urb *urb)
1713 {
1714 struct usb_mixer_interface *mixer = urb->context;
1715
1716 if (urb->status == 0) {
1717 u8 *buf = urb->transfer_buffer;
1718 int i;
1719
1720 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1721 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1722 buf[0], buf[1]);
1723 /* ignore any notifications not from the control interface */
1724 if ((buf[0] & 0x0f) != 0)
1725 continue;
1726 if (!(buf[0] & 0x40))
1727 snd_usb_mixer_notify_id(mixer, buf[1]);
1728 else
1729 snd_usb_mixer_memory_change(mixer, buf[1]);
1730 }
1731 }
1732 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1733 urb->dev = mixer->chip->dev;
1734 usb_submit_urb(urb, GFP_ATOMIC);
1735 }
1736 }
1737
1738 /* create the handler for the optional status interrupt endpoint */
1739 static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1740 {
1741 struct usb_host_interface *hostif;
1742 struct usb_endpoint_descriptor *ep;
1743 void *transfer_buffer;
1744 int buffer_length;
1745 unsigned int epnum;
1746
1747 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1748 /* we need one interrupt input endpoint */
1749 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1750 return 0;
1751 ep = get_endpoint(hostif, 0);
1752 if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
1753 (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
1754 return 0;
1755
1756 epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1757 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1758 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1759 if (!transfer_buffer)
1760 return -ENOMEM;
1761 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1762 if (!mixer->urb) {
1763 kfree(transfer_buffer);
1764 return -ENOMEM;
1765 }
1766 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1767 usb_rcvintpipe(mixer->chip->dev, epnum),
1768 transfer_buffer, buffer_length,
1769 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1770 usb_submit_urb(mixer->urb, GFP_KERNEL);
1771 return 0;
1772 }
1773
1774 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
1775 {
1776 struct usb_mixer_interface *mixer = urb->context;
1777 const struct rc_config *rc = mixer->rc_cfg;
1778 u32 code;
1779
1780 if (urb->status < 0 || urb->actual_length < rc->packet_length)
1781 return;
1782
1783 code = mixer->rc_buffer[rc->offset];
1784 if (rc->length == 2)
1785 code |= mixer->rc_buffer[rc->offset + 1] << 8;
1786
1787 /* the Mute button actually changes the mixer control */
1788 if (code == rc->mute_code)
1789 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
1790 mixer->rc_code = code;
1791 wmb();
1792 wake_up(&mixer->rc_waitq);
1793 }
1794
1795 static int snd_usb_sbrc_hwdep_open(struct snd_hwdep *hw, struct file *file)
1796 {
1797 struct usb_mixer_interface *mixer = hw->private_data;
1798
1799 if (test_and_set_bit(0, &mixer->rc_hwdep_open))
1800 return -EBUSY;
1801 return 0;
1802 }
1803
1804 static int snd_usb_sbrc_hwdep_release(struct snd_hwdep *hw, struct file *file)
1805 {
1806 struct usb_mixer_interface *mixer = hw->private_data;
1807
1808 clear_bit(0, &mixer->rc_hwdep_open);
1809 smp_mb__after_clear_bit();
1810 return 0;
1811 }
1812
1813 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
1814 long count, loff_t *offset)
1815 {
1816 struct usb_mixer_interface *mixer = hw->private_data;
1817 int err;
1818 u32 rc_code;
1819
1820 if (count != 1 && count != 4)
1821 return -EINVAL;
1822 err = wait_event_interruptible(mixer->rc_waitq,
1823 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1824 if (err == 0) {
1825 if (count == 1)
1826 err = put_user(rc_code, buf);
1827 else
1828 err = put_user(rc_code, (u32 __user *)buf);
1829 }
1830 return err < 0 ? err : count;
1831 }
1832
1833 static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
1834 poll_table *wait)
1835 {
1836 struct usb_mixer_interface *mixer = hw->private_data;
1837
1838 poll_wait(file, &mixer->rc_waitq, wait);
1839 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
1840 }
1841
1842 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
1843 {
1844 struct snd_hwdep *hwdep;
1845 int err, len, i;
1846
1847 for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
1848 if (rc_configs[i].usb_id == mixer->chip->usb_id)
1849 break;
1850 if (i >= ARRAY_SIZE(rc_configs))
1851 return 0;
1852 mixer->rc_cfg = &rc_configs[i];
1853
1854 len = mixer->rc_cfg->packet_length;
1855
1856 init_waitqueue_head(&mixer->rc_waitq);
1857 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
1858 if (err < 0)
1859 return err;
1860 snprintf(hwdep->name, sizeof(hwdep->name),
1861 "%s remote control", mixer->chip->card->shortname);
1862 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
1863 hwdep->private_data = mixer;
1864 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
1865 hwdep->ops.open = snd_usb_sbrc_hwdep_open;
1866 hwdep->ops.release = snd_usb_sbrc_hwdep_release;
1867 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
1868
1869 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
1870 if (!mixer->rc_urb)
1871 return -ENOMEM;
1872 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
1873 if (!mixer->rc_setup_packet) {
1874 usb_free_urb(mixer->rc_urb);
1875 mixer->rc_urb = NULL;
1876 return -ENOMEM;
1877 }
1878 mixer->rc_setup_packet->bRequestType =
1879 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
1880 mixer->rc_setup_packet->bRequest = GET_MEM;
1881 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
1882 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
1883 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
1884 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
1885 usb_rcvctrlpipe(mixer->chip->dev, 0),
1886 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
1887 snd_usb_soundblaster_remote_complete, mixer);
1888 return 0;
1889 }
1890
1891 #define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
1892
1893 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1894 {
1895 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1896 int index = kcontrol->private_value;
1897
1898 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
1899 return 0;
1900 }
1901
1902 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1903 {
1904 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1905 int index = kcontrol->private_value;
1906 int value = ucontrol->value.integer.value[0];
1907 int err, changed;
1908
1909 if (value > 1)
1910 return -EINVAL;
1911 changed = value != mixer->audigy2nx_leds[index];
1912 err = snd_usb_ctl_msg(mixer->chip->dev,
1913 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
1914 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1915 value, index + 2, NULL, 0, 100);
1916 if (err < 0)
1917 return err;
1918 mixer->audigy2nx_leds[index] = value;
1919 return changed;
1920 }
1921
1922 static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
1923 {
1924 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1925 .name = "CMSS LED Switch",
1926 .info = snd_audigy2nx_led_info,
1927 .get = snd_audigy2nx_led_get,
1928 .put = snd_audigy2nx_led_put,
1929 .private_value = 0,
1930 },
1931 {
1932 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1933 .name = "Power LED Switch",
1934 .info = snd_audigy2nx_led_info,
1935 .get = snd_audigy2nx_led_get,
1936 .put = snd_audigy2nx_led_put,
1937 .private_value = 1,
1938 },
1939 {
1940 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1941 .name = "Dolby Digital LED Switch",
1942 .info = snd_audigy2nx_led_info,
1943 .get = snd_audigy2nx_led_get,
1944 .put = snd_audigy2nx_led_put,
1945 .private_value = 2,
1946 },
1947 };
1948
1949 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
1950 {
1951 int i, err;
1952
1953 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
1954 err = snd_ctl_add(mixer->chip->card,
1955 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
1956 if (err < 0)
1957 return err;
1958 }
1959 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
1960 return 0;
1961 }
1962
1963 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
1964 struct snd_info_buffer *buffer)
1965 {
1966 static const struct {
1967 int unitid;
1968 const char *name;
1969 } jacks[] = {
1970 {4, "dig in "},
1971 {7, "line in"},
1972 {19, "spk out"},
1973 {20, "hph out"},
1974 };
1975 struct usb_mixer_interface *mixer = entry->private_data;
1976 int i, err;
1977 u8 buf[3];
1978
1979 snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
1980 for (i = 0; i < ARRAY_SIZE(jacks); ++i) {
1981 snd_iprintf(buffer, "%s: ", jacks[i].name);
1982 err = snd_usb_ctl_msg(mixer->chip->dev,
1983 usb_rcvctrlpipe(mixer->chip->dev, 0),
1984 GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
1985 USB_RECIP_INTERFACE, 0,
1986 jacks[i].unitid << 8, buf, 3, 100);
1987 if (err == 3 && buf[0] == 3)
1988 snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
1989 else
1990 snd_iprintf(buffer, "?\n");
1991 }
1992 }
1993
1994 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif)
1995 {
1996 static struct snd_device_ops dev_ops = {
1997 .dev_free = snd_usb_mixer_dev_free
1998 };
1999 struct usb_mixer_interface *mixer;
2000 int err;
2001
2002 strcpy(chip->card->mixername, "USB Mixer");
2003
2004 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
2005 if (!mixer)
2006 return -ENOMEM;
2007 mixer->chip = chip;
2008 mixer->ctrlif = ctrlif;
2009 #ifdef IGNORE_CTL_ERROR
2010 mixer->ignore_ctl_error = 1;
2011 #endif
2012 mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
2013 if (!mixer->id_elems) {
2014 kfree(mixer);
2015 return -ENOMEM;
2016 }
2017
2018 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
2019 (err = snd_usb_mixer_status_create(mixer)) < 0)
2020 goto _error;
2021
2022 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
2023 goto _error;
2024
2025 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020)) {
2026 struct snd_info_entry *entry;
2027
2028 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
2029 goto _error;
2030 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
2031 snd_info_set_text_ops(entry, mixer,
2032 snd_audigy2nx_proc_read);
2033 }
2034
2035 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
2036 if (err < 0)
2037 goto _error;
2038 list_add(&mixer->list, &chip->mixer_list);
2039 return 0;
2040
2041 _error:
2042 snd_usb_mixer_free(mixer);
2043 return err;
2044 }
2045
2046 void snd_usb_mixer_disconnect(struct list_head *p)
2047 {
2048 struct usb_mixer_interface *mixer;
2049
2050 mixer = list_entry(p, struct usb_mixer_interface, list);
2051 usb_kill_urb(mixer->urb);
2052 usb_kill_urb(mixer->rc_urb);
2053 }
Stable & featurefull patchset based on Linus's git branch