2 * (Tentative) USB Audio Driver for ALSA
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
8 * Many codes borrowed from audio.c by
9 * Alan Cox (alan@lxorguk.ukuu.org.uk)
10 * Thomas Sailer (sailer@ife.ee.ethz.ch)
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.
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.
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
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>
46 /* ignore error from controls - for debugging */
47 /* #define IGNORE_CTL_ERROR */
50 * Sound Blaster remote control configuration
52 * format of remote control data:
54 * Audigy 2 NX: 06 80 xx 00 00 00
55 * Live! 24-bit: 06 80 xx yy 22 83
57 static const struct rc_config {
62 u8 min_packet_length; /* minimum accepted length of the URB result */
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 */
72 struct usb_mixer_interface {
73 struct snd_usb_audio *chip;
75 struct list_head list;
76 unsigned int ignore_ctl_error;
78 struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */
80 /* Sound Blaster remote control stuff */
81 const struct rc_config *rc_cfg;
83 wait_queue_head_t rc_waitq;
85 struct usb_ctrlrequest *rc_setup_packet;
92 struct usb_audio_term {
96 unsigned int chconfig;
100 struct usbmix_name_map;
103 struct snd_usb_audio *chip;
104 struct usb_mixer_interface *mixer;
105 unsigned char *buffer;
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;
113 #define MAX_CHANNELS 10 /* max logical channels */
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;
120 unsigned int control; /* CS or ICN (high byte) */
121 unsigned int cmask; /* channel mask bitmap: 0 = master */
126 int cache_val[MAX_CHANNELS];
132 USB_FEATURE_NONE = 0,
133 USB_FEATURE_MUTE = 1,
141 USB_FEATURE_BASSBOOST,
147 USB_MIXER_INV_BOOLEAN,
156 USB_PROC_UPDOWN_SWITCH = 1,
157 USB_PROC_UPDOWN_MODE_SEL = 2,
159 USB_PROC_PROLOGIC = 2,
160 USB_PROC_PROLOGIC_SWITCH = 1,
161 USB_PROC_PROLOGIC_MODE_SEL = 2,
164 USB_PROC_3DENH_SWITCH = 1,
165 USB_PROC_3DENH_SPACE = 2,
168 USB_PROC_REVERB_SWITCH = 1,
169 USB_PROC_REVERB_LEVEL = 2,
170 USB_PROC_REVERB_TIME = 3,
171 USB_PROC_REVERB_DELAY = 4,
174 USB_PROC_CHORUS_SWITCH = 1,
175 USB_PROC_CHORUS_LEVEL = 2,
176 USB_PROC_CHORUS_RATE = 3,
177 USB_PROC_CHORUS_DEPTH = 4,
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,
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.
194 #include "usbmixer_maps.c"
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)
199 const struct usbmix_name_map *p;
204 for (p = state->map; p->id; p++) {
205 if (p->id == unitid && p->name &&
206 (! control || ! p->control || control == p->control)) {
208 return strlcpy(buf, p->name, buflen);
214 /* check whether the control should be ignored */
215 static int check_ignored_ctl(struct mixer_build *state, int unitid, int control)
217 const struct usbmix_name_map *p;
221 for (p = state->map; p->id; p++) {
222 if (p->id == unitid && ! p->name &&
223 (! control || ! p->control || control == p->control)) {
225 printk(KERN_DEBUG "ignored control %d:%d\n",
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)
238 const struct usbmix_selector_map *p;
240 if (! state->selector_map)
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);
250 * find an audio control unit with the given unit id
252 static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
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)
267 * copy a string with the given id
269 static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
271 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
277 * convert from the byte/word on usb descriptor to the zero-based integer
279 static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
281 switch (cval->val_type) {
282 case USB_MIXER_BOOLEAN:
284 case USB_MIXER_INV_BOOLEAN:
307 * convert from the zero-based int to the byte/word for usb descriptor
309 static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
311 switch (cval->val_type) {
312 case USB_MIXER_BOOLEAN:
314 case USB_MIXER_INV_BOOLEAN:
323 return 0; /* not reached */
326 static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
332 else if (val >= cval->max)
333 return (cval->max - cval->min + cval->res - 1) / cval->res;
335 return (val - cval->min) / cval->res;
338 static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
353 * retrieve a mixer value
356 static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
358 unsigned char buf[2];
359 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
362 while (timeout-- > 0) {
363 if (snd_usb_ctl_msg(cval->mixer->chip->dev,
364 usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
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));
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);
378 static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
380 return get_ctl_value(cval, GET_CUR, validx, value);
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)
387 return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value);
390 static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
391 int channel, int index, int *value)
395 if (cval->cached & (1 << channel)) {
396 *value = cval->cache_val[index];
399 err = get_cur_mix_raw(cval, channel, value);
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);
407 cval->cached |= 1 << channel;
408 cval->cache_val[index] = *value;
417 static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
419 unsigned char buf[2];
420 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
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),
430 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
431 validx, cval->mixer->ctrlif | (cval->id << 8),
432 buf, val_len, 100) >= 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]);
439 static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
441 return set_ctl_value(cval, SET_CUR, validx, value);
444 static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
445 int index, int value)
448 err = set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel,
452 cval->cached |= 1 << channel;
453 cval->cache_val[index] = value;
458 * TLV callback for mixer volume controls
460 static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
461 unsigned int size, unsigned int __user *_tlv)
463 struct usb_mixer_elem_info *cval = kcontrol->private_data;
464 DECLARE_TLV_DB_MINMAX(scale, 0, 0);
466 if (size < sizeof(scale))
468 /* USB descriptions contain the dB scale in 1/256 dB unit
469 * while ALSA TLV contains in 1/100 dB unit
471 scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256;
472 scale[3] = (convert_signed_value(cval, cval->max) * 100) / 256;
473 if (scale[3] <= scale[2]) {
474 /* something is wrong; assume it's either from/to 0dB */
477 else if (scale[2] > 0)
479 else /* totally crap, return an error */
482 if (copy_to_user(_tlv, scale, sizeof(scale)))
488 * parser routines begin here...
491 static int parse_audio_unit(struct mixer_build *state, int unitid);
495 * check if the input/output channel routing is enabled on the given bitmap.
496 * used for mixer unit parser
498 static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
500 int idx = ich * num_outs + och;
501 return bmap[idx >> 3] & (0x80 >> (idx & 7));
506 * add an alsa control element
507 * search and increment the index until an empty slot is found.
509 * if failed, give up and free the control instance.
512 static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl)
514 struct usb_mixer_elem_info *cval = kctl->private_data;
517 while (snd_ctl_find_id(state->chip->card, &kctl->id))
519 if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
520 snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
523 cval->elem_id = &kctl->id;
524 cval->next_id_elem = state->mixer->id_elems[cval->id];
525 state->mixer->id_elems[cval->id] = cval;
531 * get a terminal name string
534 static struct iterm_name_combo {
538 { 0x0300, "Output" },
539 { 0x0301, "Speaker" },
540 { 0x0302, "Headphone" },
541 { 0x0303, "HMD Audio" },
542 { 0x0304, "Desktop Speaker" },
543 { 0x0305, "Room Speaker" },
544 { 0x0306, "Com Speaker" },
546 { 0x0600, "External In" },
547 { 0x0601, "Analog In" },
548 { 0x0602, "Digital In" },
550 { 0x0604, "Legacy In" },
551 { 0x0605, "IEC958 In" },
552 { 0x0606, "1394 DA Stream" },
553 { 0x0607, "1394 DV Stream" },
554 { 0x0700, "Embedded" },
555 { 0x0701, "Noise Source" },
556 { 0x0702, "Equalization Noise" },
560 { 0x0706, "MiniDisk" },
561 { 0x0707, "Analog Tape" },
562 { 0x0708, "Phonograph" },
563 { 0x0709, "VCR Audio" },
564 { 0x070a, "Video Disk Audio" },
565 { 0x070b, "DVD Audio" },
566 { 0x070c, "TV Tuner Audio" },
567 { 0x070d, "Satellite Rec Audio" },
568 { 0x070e, "Cable Tuner Audio" },
569 { 0x070f, "DSS Audio" },
570 { 0x0710, "Radio Receiver" },
571 { 0x0711, "Radio Transmitter" },
572 { 0x0712, "Multi-Track Recorder" },
573 { 0x0713, "Synthesizer" },
577 static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
578 unsigned char *name, int maxlen, int term_only)
580 struct iterm_name_combo *names;
583 return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
585 /* virtual type - not a real terminal */
586 if (iterm->type >> 16) {
589 switch (iterm->type >> 16) {
591 strcpy(name, "Selector"); return 8;
592 case PROCESSING_UNIT:
593 strcpy(name, "Process Unit"); return 12;
595 strcpy(name, "Ext Unit"); return 8;
597 strcpy(name, "Mixer"); return 5;
599 return sprintf(name, "Unit %d", iterm->id);
603 switch (iterm->type & 0xff00) {
605 strcpy(name, "PCM"); return 3;
607 strcpy(name, "Mic"); return 3;
609 strcpy(name, "Headset"); return 7;
611 strcpy(name, "Phone"); return 5;
614 for (names = iterm_names; names->type; names++)
615 if (names->type == iterm->type) {
616 strcpy(name, names->name);
617 return strlen(names->name);
624 * parse the source unit recursively until it reaches to a terminal
625 * or a branched unit.
627 static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
631 memset(term, 0, sizeof(*term));
632 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
636 term->type = combine_word(p1 + 4);
637 term->channels = p1[7];
638 term->chconfig = combine_word(p1 + 8);
643 break; /* continue to parse */
645 term->type = p1[2] << 16; /* virtual type */
646 term->channels = p1[5 + p1[4]];
647 term->chconfig = combine_word(p1 + 6 + p1[4]);
648 term->name = p1[p1[0] - 1];
651 /* call recursively to retrieve the channel info */
652 if (check_input_term(state, p1[5], term) < 0)
654 term->type = p1[2] << 16; /* virtual type */
656 term->name = p1[9 + p1[0] - 1];
658 case PROCESSING_UNIT:
662 break; /* continue to parse */
664 term->type = p1[2] << 16; /* virtual type */
665 term->channels = p1[7 + p1[6]];
666 term->chconfig = combine_word(p1 + 8 + p1[6]);
667 term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
681 /* feature unit control information */
682 struct usb_feature_control_info {
684 unsigned int type; /* control type (mute, volume, etc.) */
687 static struct usb_feature_control_info audio_feature_info[] = {
688 { "Mute", USB_MIXER_INV_BOOLEAN },
689 { "Volume", USB_MIXER_S16 },
690 { "Tone Control - Bass", USB_MIXER_S8 },
691 { "Tone Control - Mid", USB_MIXER_S8 },
692 { "Tone Control - Treble", USB_MIXER_S8 },
693 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
694 { "Auto Gain Control", USB_MIXER_BOOLEAN },
695 { "Delay Control", USB_MIXER_U16 },
696 { "Bass Boost", USB_MIXER_BOOLEAN },
697 { "Loudness", USB_MIXER_BOOLEAN },
701 /* private_free callback */
702 static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
704 kfree(kctl->private_data);
705 kctl->private_data = NULL;
710 * interface to ALSA control for feature/mixer units
714 * retrieve the minimum and maximum values for the specified control
716 static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
719 cval->min = default_min;
720 cval->max = cval->min + 1;
723 if (cval->val_type == USB_MIXER_BOOLEAN ||
724 cval->val_type == USB_MIXER_INV_BOOLEAN) {
725 cval->initialized = 1;
730 for (i = 0; i < MAX_CHANNELS; i++)
731 if (cval->cmask & (1 << i)) {
736 if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
737 get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
738 snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
739 cval->id, cval->mixer->ctrlif, cval->control, cval->id);
742 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
745 int last_valid_res = cval->res;
747 while (cval->res > 1) {
748 if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
752 if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
753 cval->res = last_valid_res;
758 /* Additional checks for the proper resolution
760 * Some devices report smaller resolutions than actually
761 * reacting. They don't return errors but simply clip
762 * to the lower aligned value.
764 if (cval->min + cval->res < cval->max) {
765 int last_valid_res = cval->res;
766 int saved, test, check;
767 get_cur_mix_raw(cval, minchn, &saved);
770 if (test < cval->max)
774 if (test < cval->min || test > cval->max ||
775 set_cur_mix_value(cval, minchn, 0, test) ||
776 get_cur_mix_raw(cval, minchn, &check)) {
777 cval->res = last_valid_res;
784 set_cur_mix_value(cval, minchn, 0, saved);
787 cval->initialized = 1;
793 /* get a feature/mixer unit info */
794 static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
796 struct usb_mixer_elem_info *cval = kcontrol->private_data;
798 if (cval->val_type == USB_MIXER_BOOLEAN ||
799 cval->val_type == USB_MIXER_INV_BOOLEAN)
800 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
802 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
803 uinfo->count = cval->channels;
804 if (cval->val_type == USB_MIXER_BOOLEAN ||
805 cval->val_type == USB_MIXER_INV_BOOLEAN) {
806 uinfo->value.integer.min = 0;
807 uinfo->value.integer.max = 1;
809 if (! cval->initialized)
810 get_min_max(cval, 0);
811 uinfo->value.integer.min = 0;
812 uinfo->value.integer.max =
813 (cval->max - cval->min + cval->res - 1) / cval->res;
818 /* get the current value from feature/mixer unit */
819 static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
821 struct usb_mixer_elem_info *cval = kcontrol->private_data;
822 int c, cnt, val, err;
824 ucontrol->value.integer.value[0] = cval->min;
827 for (c = 0; c < MAX_CHANNELS; c++) {
828 if (!(cval->cmask & (1 << c)))
830 err = get_cur_mix_value(cval, c + 1, cnt, &val);
832 return cval->mixer->ignore_ctl_error ? 0 : err;
833 val = get_relative_value(cval, val);
834 ucontrol->value.integer.value[cnt] = val;
840 err = get_cur_mix_value(cval, 0, 0, &val);
842 return cval->mixer->ignore_ctl_error ? 0 : err;
843 val = get_relative_value(cval, val);
844 ucontrol->value.integer.value[0] = val;
849 /* put the current value to feature/mixer unit */
850 static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
852 struct usb_mixer_elem_info *cval = kcontrol->private_data;
853 int c, cnt, val, oval, err;
858 for (c = 0; c < MAX_CHANNELS; c++) {
859 if (!(cval->cmask & (1 << c)))
861 err = get_cur_mix_value(cval, c + 1, cnt, &oval);
863 return cval->mixer->ignore_ctl_error ? 0 : err;
864 val = ucontrol->value.integer.value[cnt];
865 val = get_abs_value(cval, val);
867 set_cur_mix_value(cval, c + 1, cnt, val);
874 err = get_cur_mix_value(cval, 0, 0, &oval);
876 return cval->mixer->ignore_ctl_error ? 0 : err;
877 val = ucontrol->value.integer.value[0];
878 val = get_abs_value(cval, val);
880 set_cur_mix_value(cval, 0, 0, val);
887 static struct snd_kcontrol_new usb_feature_unit_ctl = {
888 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
889 .name = "", /* will be filled later manually */
890 .info = mixer_ctl_feature_info,
891 .get = mixer_ctl_feature_get,
892 .put = mixer_ctl_feature_put,
897 * build a feature control
900 static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
901 unsigned int ctl_mask, int control,
902 struct usb_audio_term *iterm, int unitid)
904 unsigned int len = 0;
906 int nameid = desc[desc[0] - 1];
907 struct snd_kcontrol *kctl;
908 struct usb_mixer_elem_info *cval;
910 control++; /* change from zero-based to 1-based value */
912 if (control == USB_FEATURE_GEQ) {
913 /* FIXME: not supported yet */
917 if (check_ignored_ctl(state, unitid, control))
920 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
922 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
925 cval->mixer = state->mixer;
927 cval->control = control;
928 cval->cmask = ctl_mask;
929 cval->val_type = audio_feature_info[control-1].type;
931 cval->channels = 1; /* master channel */
934 for (i = 0; i < 16; i++)
935 if (ctl_mask & (1 << i))
940 /* get min/max values */
941 get_min_max(cval, 0);
943 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
945 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
949 kctl->private_free = usb_mixer_elem_free;
951 len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
952 mapped_name = len != 0;
954 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
957 case USB_FEATURE_MUTE:
958 case USB_FEATURE_VOLUME:
959 /* determine the control name. the rule is:
960 * - if a name id is given in descriptor, use it.
961 * - if the connected input can be determined, then use the name
963 * - if the connected output can be determined, use it.
964 * - otherwise, anonymous name.
967 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
969 len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
971 len = snprintf(kctl->id.name, sizeof(kctl->id.name),
972 "Feature %d", unitid);
974 /* determine the stream direction:
975 * if the connected output is USB stream, then it's likely a
976 * capture stream. otherwise it should be playback (hopefully :)
978 if (! mapped_name && ! (state->oterm.type >> 16)) {
979 if ((state->oterm.type & 0xff00) == 0x0100) {
980 len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name));
982 len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name));
985 strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
986 sizeof(kctl->id.name));
987 if (control == USB_FEATURE_VOLUME) {
988 kctl->tlv.c = mixer_vol_tlv;
989 kctl->vd[0].access |=
990 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
991 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
997 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
998 sizeof(kctl->id.name));
1002 /* volume control quirks */
1003 switch (state->chip->usb_id) {
1004 case USB_ID(0x0471, 0x0101):
1005 case USB_ID(0x0471, 0x0104):
1006 case USB_ID(0x0471, 0x0105):
1007 case USB_ID(0x0672, 0x1041):
1008 /* quirk for UDA1321/N101.
1009 * note that detection between firmware 2.1.1.7 (N101)
1010 * and later 2.1.1.21 is not very clear from datasheets.
1011 * I hope that the min value is -15360 for newer firmware --jk
1013 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
1014 cval->min == -15616) {
1015 snd_printk(KERN_INFO
1016 "set volume quirk for UDA1321/N101 chip\n");
1021 case USB_ID(0x046d, 0x09a4):
1022 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
1023 snd_printk(KERN_INFO
1024 "set volume quirk for QuickCam E3500\n");
1033 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1034 cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
1035 add_control_to_empty(state, kctl);
1041 * parse a feature unit
1043 * most of controlls are defined here.
1045 static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsigned char *ftr)
1048 struct usb_audio_term iterm;
1049 unsigned int master_bits, first_ch_bits;
1052 if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
1053 snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
1057 /* parse the source unit */
1058 if ((err = parse_audio_unit(state, ftr[4])) < 0)
1061 /* determine the input source type and name */
1062 if (check_input_term(state, ftr[4], &iterm) < 0)
1065 channels = (ftr[0] - 7) / csize - 1;
1067 master_bits = snd_usb_combine_bytes(ftr + 6, csize);
1069 first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
1072 /* check all control types */
1073 for (i = 0; i < 10; i++) {
1074 unsigned int ch_bits = 0;
1075 for (j = 0; j < channels; j++) {
1076 unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize);
1077 if (mask & (1 << i))
1078 ch_bits |= (1 << j);
1080 if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
1081 build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid);
1082 if (master_bits & (1 << i))
1083 build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
1095 * build a mixer unit control
1097 * the callbacks are identical with feature unit.
1098 * input channel number (zero based) is given in control field instead.
1101 static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
1102 int in_pin, int in_ch, int unitid,
1103 struct usb_audio_term *iterm)
1105 struct usb_mixer_elem_info *cval;
1106 unsigned int input_pins = desc[4];
1107 unsigned int num_outs = desc[5 + input_pins];
1108 unsigned int i, len;
1109 struct snd_kcontrol *kctl;
1111 if (check_ignored_ctl(state, unitid, 0))
1114 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1118 cval->mixer = state->mixer;
1120 cval->control = in_ch + 1; /* based on 1 */
1121 cval->val_type = USB_MIXER_S16;
1122 for (i = 0; i < num_outs; i++) {
1123 if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
1124 cval->cmask |= (1 << i);
1129 /* get min/max values */
1130 get_min_max(cval, 0);
1132 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1134 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1138 kctl->private_free = usb_mixer_elem_free;
1140 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1142 len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
1144 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1145 strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name));
1147 snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
1148 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1149 add_control_to_empty(state, kctl);
1154 * parse a mixer unit
1156 static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1158 struct usb_audio_term iterm;
1159 int input_pins, num_ins, num_outs;
1162 if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
1163 snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
1166 /* no bmControls field (e.g. Maya44) -> ignore */
1167 if (desc[0] <= 10 + input_pins) {
1168 snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
1174 for (pin = 0; pin < input_pins; pin++) {
1175 err = parse_audio_unit(state, desc[5 + pin]);
1178 err = check_input_term(state, desc[5 + pin], &iterm);
1181 num_ins += iterm.channels;
1182 for (; ich < num_ins; ++ich) {
1183 int och, ich_has_controls = 0;
1185 for (och = 0; och < num_outs; ++och) {
1186 if (check_matrix_bitmap(desc + 9 + input_pins,
1187 ich, och, num_outs)) {
1188 ich_has_controls = 1;
1192 if (ich_has_controls)
1193 build_mixer_unit_ctl(state, desc, pin, ich,
1202 * Processing Unit / Extension Unit
1205 /* get callback for processing/extension unit */
1206 static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1208 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1211 err = get_cur_ctl_value(cval, cval->control << 8, &val);
1212 if (err < 0 && cval->mixer->ignore_ctl_error) {
1213 ucontrol->value.integer.value[0] = cval->min;
1218 val = get_relative_value(cval, val);
1219 ucontrol->value.integer.value[0] = val;
1223 /* put callback for processing/extension unit */
1224 static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1226 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1229 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1231 if (cval->mixer->ignore_ctl_error)
1235 val = ucontrol->value.integer.value[0];
1236 val = get_abs_value(cval, val);
1238 set_cur_ctl_value(cval, cval->control << 8, val);
1244 /* alsa control interface for processing/extension unit */
1245 static struct snd_kcontrol_new mixer_procunit_ctl = {
1246 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1247 .name = "", /* will be filled later */
1248 .info = mixer_ctl_feature_info,
1249 .get = mixer_ctl_procunit_get,
1250 .put = mixer_ctl_procunit_put,
1255 * predefined data for processing units
1257 struct procunit_value_info {
1264 struct procunit_info {
1267 struct procunit_value_info *values;
1270 static struct procunit_value_info updown_proc_info[] = {
1271 { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1272 { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1275 static struct procunit_value_info prologic_proc_info[] = {
1276 { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1277 { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
1280 static struct procunit_value_info threed_enh_proc_info[] = {
1281 { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1282 { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
1285 static struct procunit_value_info reverb_proc_info[] = {
1286 { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1287 { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1288 { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
1289 { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
1292 static struct procunit_value_info chorus_proc_info[] = {
1293 { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1294 { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1295 { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1296 { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1299 static struct procunit_value_info dcr_proc_info[] = {
1300 { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
1301 { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
1302 { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
1303 { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1304 { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
1305 { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
1309 static struct procunit_info procunits[] = {
1310 { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
1311 { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1312 { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
1313 { USB_PROC_REVERB, "Reverb", reverb_proc_info },
1314 { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
1315 { USB_PROC_DCR, "DCR", dcr_proc_info },
1320 * build a processing/extension unit
1322 static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
1324 int num_ins = dsc[6];
1325 struct usb_mixer_elem_info *cval;
1326 struct snd_kcontrol *kctl;
1327 int i, err, nameid, type, len;
1328 struct procunit_info *info;
1329 struct procunit_value_info *valinfo;
1330 static struct procunit_value_info default_value_info[] = {
1331 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1334 static struct procunit_info default_info = {
1335 0, NULL, default_value_info
1338 if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
1339 snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
1343 for (i = 0; i < num_ins; i++) {
1344 if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
1348 type = combine_word(&dsc[4]);
1349 for (info = list; info && info->type; info++)
1350 if (info->type == type)
1352 if (! info || ! info->type)
1353 info = &default_info;
1355 for (valinfo = info->values; valinfo->control; valinfo++) {
1356 /* FIXME: bitmap might be longer than 8bit */
1357 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
1359 if (check_ignored_ctl(state, unitid, valinfo->control))
1361 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1363 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1366 cval->mixer = state->mixer;
1368 cval->control = valinfo->control;
1369 cval->val_type = valinfo->val_type;
1372 /* get min/max values */
1373 if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
1374 /* FIXME: hard-coded */
1376 cval->max = dsc[15];
1378 cval->initialized = 1;
1380 get_min_max(cval, valinfo->min_value);
1382 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1384 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1388 kctl->private_free = usb_mixer_elem_free;
1390 if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
1392 else if (info->name)
1393 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1395 nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
1398 len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1400 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1402 strlcat(kctl->id.name, " ", sizeof(kctl->id.name));
1403 strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name));
1405 snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
1406 cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
1407 if ((err = add_control_to_empty(state, kctl)) < 0)
1414 static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1416 return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
1419 static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1421 return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
1429 /* info callback for selector unit
1430 * use an enumerator type for routing
1432 static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1434 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1435 char **itemlist = (char **)kcontrol->private_value;
1437 if (snd_BUG_ON(!itemlist))
1439 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1441 uinfo->value.enumerated.items = cval->max;
1442 if ((int)uinfo->value.enumerated.item >= cval->max)
1443 uinfo->value.enumerated.item = cval->max - 1;
1444 strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
1448 /* get callback for selector unit */
1449 static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1451 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1454 err = get_cur_ctl_value(cval, 0, &val);
1456 if (cval->mixer->ignore_ctl_error) {
1457 ucontrol->value.enumerated.item[0] = 0;
1462 val = get_relative_value(cval, val);
1463 ucontrol->value.enumerated.item[0] = val;
1467 /* put callback for selector unit */
1468 static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1470 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1473 err = get_cur_ctl_value(cval, 0, &oval);
1475 if (cval->mixer->ignore_ctl_error)
1479 val = ucontrol->value.enumerated.item[0];
1480 val = get_abs_value(cval, val);
1482 set_cur_ctl_value(cval, 0, val);
1488 /* alsa control interface for selector unit */
1489 static struct snd_kcontrol_new mixer_selectunit_ctl = {
1490 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1491 .name = "", /* will be filled later */
1492 .info = mixer_ctl_selector_info,
1493 .get = mixer_ctl_selector_get,
1494 .put = mixer_ctl_selector_put,
1498 /* private free callback.
1499 * free both private_data and private_value
1501 static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1505 if (kctl->private_data) {
1506 struct usb_mixer_elem_info *cval = kctl->private_data;
1507 num_ins = cval->max;
1509 kctl->private_data = NULL;
1511 if (kctl->private_value) {
1512 char **itemlist = (char **)kctl->private_value;
1513 for (i = 0; i < num_ins; i++)
1516 kctl->private_value = 0;
1521 * parse a selector unit
1523 static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
1525 unsigned int num_ins = desc[4];
1526 unsigned int i, nameid, len;
1528 struct usb_mixer_elem_info *cval;
1529 struct snd_kcontrol *kctl;
1532 if (! num_ins || desc[0] < 5 + num_ins) {
1533 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
1537 for (i = 0; i < num_ins; i++) {
1538 if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
1542 if (num_ins == 1) /* only one ? nonsense! */
1545 if (check_ignored_ctl(state, unitid, 0))
1548 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1550 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1553 cval->mixer = state->mixer;
1555 cval->val_type = USB_MIXER_U8;
1558 cval->max = num_ins;
1560 cval->initialized = 1;
1562 namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
1564 snd_printk(KERN_ERR "cannot malloc\n");
1568 #define MAX_ITEM_NAME_LEN 64
1569 for (i = 0; i < num_ins; i++) {
1570 struct usb_audio_term iterm;
1572 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
1573 if (! namelist[i]) {
1574 snd_printk(KERN_ERR "cannot malloc\n");
1581 len = check_mapped_selector_name(state, unitid, i, namelist[i],
1583 if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
1584 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
1586 sprintf(namelist[i], "Input %d", i);
1589 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
1591 snd_printk(KERN_ERR "cannot malloc kcontrol\n");
1596 kctl->private_value = (unsigned long)namelist;
1597 kctl->private_free = usb_mixer_selector_elem_free;
1599 nameid = desc[desc[0] - 1];
1600 len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
1604 snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
1606 len = get_term_name(state, &state->oterm,
1607 kctl->id.name, sizeof(kctl->id.name), 0);
1609 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1611 if ((state->oterm.type & 0xff00) == 0x0100)
1612 strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name));
1614 strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name));
1617 snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
1618 cval->id, kctl->id.name, num_ins);
1619 if ((err = add_control_to_empty(state, kctl)) < 0)
1627 * parse an audio unit recursively
1630 static int parse_audio_unit(struct mixer_build *state, int unitid)
1634 if (test_and_set_bit(unitid, state->unitbitmap))
1635 return 0; /* the unit already visited */
1637 p1 = find_audio_control_unit(state, unitid);
1639 snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
1644 case INPUT_TERMINAL:
1647 return parse_audio_mixer_unit(state, unitid, p1);
1649 return parse_audio_selector_unit(state, unitid, p1);
1651 return parse_audio_feature_unit(state, unitid, p1);
1652 case PROCESSING_UNIT:
1653 return parse_audio_processing_unit(state, unitid, p1);
1654 case EXTENSION_UNIT:
1655 return parse_audio_extension_unit(state, unitid, p1);
1657 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
1662 static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
1664 kfree(mixer->id_elems);
1666 kfree(mixer->urb->transfer_buffer);
1667 usb_free_urb(mixer->urb);
1669 usb_free_urb(mixer->rc_urb);
1670 kfree(mixer->rc_setup_packet);
1674 static int snd_usb_mixer_dev_free(struct snd_device *device)
1676 struct usb_mixer_interface *mixer = device->device_data;
1677 snd_usb_mixer_free(mixer);
1682 * create mixer controls
1684 * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1686 static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1688 unsigned char *desc;
1689 struct mixer_build state;
1691 const struct usbmix_ctl_map *map;
1692 struct usb_host_interface *hostif;
1694 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1695 memset(&state, 0, sizeof(state));
1696 state.chip = mixer->chip;
1697 state.mixer = mixer;
1698 state.buffer = hostif->extra;
1699 state.buflen = hostif->extralen;
1701 /* check the mapping table */
1702 for (map = usbmix_ctl_maps; map->id; map++) {
1703 if (map->id == state.chip->usb_id) {
1704 state.map = map->map;
1705 state.selector_map = map->selector_map;
1706 mixer->ignore_ctl_error = map->ignore_ctl_error;
1712 while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
1714 continue; /* invalid descriptor? */
1715 set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */
1716 state.oterm.id = desc[3];
1717 state.oterm.type = combine_word(&desc[4]);
1718 state.oterm.name = desc[8];
1719 err = parse_audio_unit(&state, desc[7]);
1726 static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
1729 struct usb_mixer_elem_info *info;
1731 for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
1732 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1736 static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
1741 /* unit ids specific to Extigy/Audigy 2 NX: */
1743 case 0: /* remote control */
1744 mixer->rc_urb->dev = mixer->chip->dev;
1745 usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
1747 case 4: /* digital in jack */
1748 case 7: /* line in jacks */
1749 case 19: /* speaker out jacks */
1750 case 20: /* headphones out jack */
1752 /* live24ext: 4 = line-in jack */
1753 case 3: /* hp-out jack (may actuate Mute) */
1754 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1755 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
1756 snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
1759 snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
1764 static void snd_usb_mixer_status_complete(struct urb *urb)
1766 struct usb_mixer_interface *mixer = urb->context;
1768 if (urb->status == 0) {
1769 u8 *buf = urb->transfer_buffer;
1772 for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
1773 snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
1775 /* ignore any notifications not from the control interface */
1776 if ((buf[0] & 0x0f) != 0)
1778 if (!(buf[0] & 0x40))
1779 snd_usb_mixer_notify_id(mixer, buf[1]);
1781 snd_usb_mixer_memory_change(mixer, buf[1]);
1784 if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
1785 urb->dev = mixer->chip->dev;
1786 usb_submit_urb(urb, GFP_ATOMIC);
1790 /* create the handler for the optional status interrupt endpoint */
1791 static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
1793 struct usb_host_interface *hostif;
1794 struct usb_endpoint_descriptor *ep;
1795 void *transfer_buffer;
1799 hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
1800 /* we need one interrupt input endpoint */
1801 if (get_iface_desc(hostif)->bNumEndpoints < 1)
1803 ep = get_endpoint(hostif, 0);
1804 if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
1807 epnum = usb_endpoint_num(ep);
1808 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
1809 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
1810 if (!transfer_buffer)
1812 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
1814 kfree(transfer_buffer);
1817 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
1818 usb_rcvintpipe(mixer->chip->dev, epnum),
1819 transfer_buffer, buffer_length,
1820 snd_usb_mixer_status_complete, mixer, ep->bInterval);
1821 usb_submit_urb(mixer->urb, GFP_KERNEL);
1825 static void snd_usb_soundblaster_remote_complete(struct urb *urb)
1827 struct usb_mixer_interface *mixer = urb->context;
1828 const struct rc_config *rc = mixer->rc_cfg;
1831 if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
1834 code = mixer->rc_buffer[rc->offset];
1835 if (rc->length == 2)
1836 code |= mixer->rc_buffer[rc->offset + 1] << 8;
1838 /* the Mute button actually changes the mixer control */
1839 if (code == rc->mute_code)
1840 snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
1841 mixer->rc_code = code;
1843 wake_up(&mixer->rc_waitq);
1846 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
1847 long count, loff_t *offset)
1849 struct usb_mixer_interface *mixer = hw->private_data;
1853 if (count != 1 && count != 4)
1855 err = wait_event_interruptible(mixer->rc_waitq,
1856 (rc_code = xchg(&mixer->rc_code, 0)) != 0);
1859 err = put_user(rc_code, buf);
1861 err = put_user(rc_code, (u32 __user *)buf);
1863 return err < 0 ? err : count;
1866 static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
1869 struct usb_mixer_interface *mixer = hw->private_data;
1871 poll_wait(file, &mixer->rc_waitq, wait);
1872 return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
1875 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
1877 struct snd_hwdep *hwdep;
1880 for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
1881 if (rc_configs[i].usb_id == mixer->chip->usb_id)
1883 if (i >= ARRAY_SIZE(rc_configs))
1885 mixer->rc_cfg = &rc_configs[i];
1887 len = mixer->rc_cfg->packet_length;
1889 init_waitqueue_head(&mixer->rc_waitq);
1890 err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
1893 snprintf(hwdep->name, sizeof(hwdep->name),
1894 "%s remote control", mixer->chip->card->shortname);
1895 hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
1896 hwdep->private_data = mixer;
1897 hwdep->ops.read = snd_usb_sbrc_hwdep_read;
1898 hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
1899 hwdep->exclusive = 1;
1901 mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
1904 mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
1905 if (!mixer->rc_setup_packet) {
1906 usb_free_urb(mixer->rc_urb);
1907 mixer->rc_urb = NULL;
1910 mixer->rc_setup_packet->bRequestType =
1911 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
1912 mixer->rc_setup_packet->bRequest = GET_MEM;
1913 mixer->rc_setup_packet->wValue = cpu_to_le16(0);
1914 mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
1915 mixer->rc_setup_packet->wLength = cpu_to_le16(len);
1916 usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
1917 usb_rcvctrlpipe(mixer->chip->dev, 0),
1918 (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
1919 snd_usb_soundblaster_remote_complete, mixer);
1923 #define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
1925 static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1927 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1928 int index = kcontrol->private_value;
1930 ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
1934 static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1936 struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
1937 int index = kcontrol->private_value;
1938 int value = ucontrol->value.integer.value[0];
1943 changed = value != mixer->audigy2nx_leds[index];
1944 err = snd_usb_ctl_msg(mixer->chip->dev,
1945 usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
1946 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
1947 value, index + 2, NULL, 0, 100);
1950 mixer->audigy2nx_leds[index] = value;
1954 static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
1956 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1957 .name = "CMSS LED Switch",
1958 .info = snd_audigy2nx_led_info,
1959 .get = snd_audigy2nx_led_get,
1960 .put = snd_audigy2nx_led_put,
1964 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1965 .name = "Power LED Switch",
1966 .info = snd_audigy2nx_led_info,
1967 .get = snd_audigy2nx_led_get,
1968 .put = snd_audigy2nx_led_put,
1972 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1973 .name = "Dolby Digital LED Switch",
1974 .info = snd_audigy2nx_led_info,
1975 .get = snd_audigy2nx_led_get,
1976 .put = snd_audigy2nx_led_put,
1981 static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
1985 for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
1986 if (i > 1 && /* Live24ext has 2 LEDs only */
1987 (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
1988 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)))
1990 err = snd_ctl_add(mixer->chip->card,
1991 snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
1995 mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
1999 static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
2000 struct snd_info_buffer *buffer)
2002 static const struct sb_jack {
2005 } jacks_audigy2nx[] = {
2011 }, jacks_live24ext[] = {
2012 {4, "line in"}, /* &1=Line, &2=Mic*/
2013 {3, "hph out"}, /* headphones */
2014 {0, "RC "}, /* last command, 6 bytes see rc_config above */
2017 const struct sb_jack *jacks;
2018 struct usb_mixer_interface *mixer = entry->private_data;
2022 snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
2023 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
2024 jacks = jacks_audigy2nx;
2025 else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2026 mixer->chip->usb_id == USB_ID(0x041e, 0x3048))
2027 jacks = jacks_live24ext;
2031 for (i = 0; jacks[i].name; ++i) {
2032 snd_iprintf(buffer, "%s: ", jacks[i].name);
2033 err = snd_usb_ctl_msg(mixer->chip->dev,
2034 usb_rcvctrlpipe(mixer->chip->dev, 0),
2035 GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
2036 USB_RECIP_INTERFACE, 0,
2037 jacks[i].unitid << 8, buf, 3, 100);
2038 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
2039 snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
2041 snd_iprintf(buffer, "?\n");
2045 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
2048 static struct snd_device_ops dev_ops = {
2049 .dev_free = snd_usb_mixer_dev_free
2051 struct usb_mixer_interface *mixer;
2054 strcpy(chip->card->mixername, "USB Mixer");
2056 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
2060 mixer->ctrlif = ctrlif;
2061 mixer->ignore_ctl_error = ignore_error;
2062 mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
2063 if (!mixer->id_elems) {
2068 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
2069 (err = snd_usb_mixer_status_create(mixer)) < 0)
2072 if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
2075 if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
2076 mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
2077 mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
2078 struct snd_info_entry *entry;
2080 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
2082 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
2083 snd_info_set_text_ops(entry, mixer,
2084 snd_audigy2nx_proc_read);
2087 err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
2090 list_add(&mixer->list, &chip->mixer_list);
2094 snd_usb_mixer_free(mixer);
2098 void snd_usb_mixer_disconnect(struct list_head *p)
2100 struct usb_mixer_interface *mixer;
2102 mixer = list_entry(p, struct usb_mixer_interface, list);
2103 usb_kill_urb(mixer->urb);
2104 usb_kill_urb(mixer->rc_urb);