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
30 * TODOs, for both the mixer and the streaming interfaces:
32 * - support for UAC2 effect units
33 * - support for graphical equalizers
34 * - RANGE and MEM set commands (UAC2)
35 * - RANGE and MEM interrupt dispatchers (UAC2)
36 * - audio channel clustering (UAC2)
37 * - audio sample rate converter units (UAC2)
38 * - proper handling of clock multipliers (UAC2)
39 * - dispatch clock change notifications (UAC2)
40 * - stop PCM streams which use a clock that became invalid
41 * - stop PCM streams which use a clock selector that has changed
42 * - parse available sample rates again when clock sources changed
45 #include <linux/bitops.h>
46 #include <linux/init.h>
47 #include <linux/list.h>
48 #include <linux/slab.h>
49 #include <linux/string.h>
50 #include <linux/usb.h>
51 #include <linux/usb/audio.h>
52 #include <linux/usb/audio-v2.h>
54 #include <sound/core.h>
55 #include <sound/control.h>
56 #include <sound/hwdep.h>
57 #include <sound/info.h>
58 #include <sound/tlv.h>
63 #include "mixer_quirks.h"
66 #define MAX_ID_ELEMS 256
68 struct usb_audio_term {
72 unsigned int chconfig;
76 struct usbmix_name_map;
79 struct snd_usb_audio *chip;
80 struct usb_mixer_interface *mixer;
81 unsigned char *buffer;
83 DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS);
84 struct usb_audio_term oterm;
85 const struct usbmix_name_map *map;
86 const struct usbmix_selector_map *selector_map;
89 /*E-mu 0202/0404/0204 eXtension Unit(XU) control*/
91 USB_XU_CLOCK_RATE = 0xe301,
92 USB_XU_CLOCK_SOURCE = 0xe302,
93 USB_XU_DIGITAL_IO_STATUS = 0xe303,
94 USB_XU_DEVICE_OPTIONS = 0xe304,
95 USB_XU_DIRECT_MONITORING = 0xe305,
96 USB_XU_METERING = 0xe306
99 USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/
100 USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */
101 USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */
102 USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */
106 * manual mapping of mixer names
107 * if the mixer topology is too complicated and the parsed names are
108 * ambiguous, add the entries in usbmixer_maps.c.
110 #include "mixer_maps.c"
112 static const struct usbmix_name_map *
113 find_map(struct mixer_build *state, int unitid, int control)
115 const struct usbmix_name_map *p = state->map;
120 for (p = state->map; p->id; p++) {
121 if (p->id == unitid &&
122 (!control || !p->control || control == p->control))
128 /* get the mapped name if the unit matches */
130 check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen)
136 return strlcpy(buf, p->name, buflen);
139 /* ignore the error value if ignore_ctl_error flag is set */
140 #define filter_error(cval, err) \
141 ((cval)->head.mixer->ignore_ctl_error ? 0 : (err))
143 /* check whether the control should be ignored */
145 check_ignored_ctl(const struct usbmix_name_map *p)
147 if (!p || p->name || p->dB)
153 static inline void check_mapped_dB(const struct usbmix_name_map *p,
154 struct usb_mixer_elem_info *cval)
157 cval->dBmin = p->dB->min;
158 cval->dBmax = p->dB->max;
159 cval->initialized = 1;
163 /* get the mapped selector source name */
164 static int check_mapped_selector_name(struct mixer_build *state, int unitid,
165 int index, char *buf, int buflen)
167 const struct usbmix_selector_map *p;
169 if (!state->selector_map)
171 for (p = state->selector_map; p->id; p++) {
172 if (p->id == unitid && index < p->count)
173 return strlcpy(buf, p->names[index], buflen);
179 * find an audio control unit with the given unit id
181 static void *find_audio_control_unit(struct mixer_build *state,
184 /* we just parse the header */
185 struct uac_feature_unit_descriptor *hdr = NULL;
187 while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr,
188 USB_DT_CS_INTERFACE)) != NULL) {
189 if (hdr->bLength >= 4 &&
190 hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL &&
191 hdr->bDescriptorSubtype <= UAC2_SAMPLE_RATE_CONVERTER &&
192 hdr->bUnitID == unit)
200 * copy a string with the given id
202 static int snd_usb_copy_string_desc(struct mixer_build *state,
203 int index, char *buf, int maxlen)
205 int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
211 * convert from the byte/word on usb descriptor to the zero-based integer
213 static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
215 switch (cval->val_type) {
216 case USB_MIXER_BOOLEAN:
218 case USB_MIXER_INV_BOOLEAN:
241 * convert from the zero-based int to the byte/word for usb descriptor
243 static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
245 switch (cval->val_type) {
246 case USB_MIXER_BOOLEAN:
248 case USB_MIXER_INV_BOOLEAN:
257 return 0; /* not reached */
260 static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
266 else if (val >= cval->max)
267 return (cval->max - cval->min + cval->res - 1) / cval->res;
269 return (val - cval->min) / cval->res;
272 static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
287 * retrieve a mixer value
290 static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request,
291 int validx, int *value_ret)
293 struct snd_usb_audio *chip = cval->head.mixer->chip;
294 unsigned char buf[2];
295 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
299 err = snd_usb_autoresume(chip);
303 down_read(&chip->shutdown_rwsem);
304 while (timeout-- > 0) {
307 idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8);
308 if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request,
309 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
310 validx, idx, buf, val_len) >= val_len) {
311 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
317 "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
318 request, validx, idx, cval->val_type);
322 up_read(&chip->shutdown_rwsem);
323 snd_usb_autosuspend(chip);
327 static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
328 int validx, int *value_ret)
330 struct snd_usb_audio *chip = cval->head.mixer->chip;
331 unsigned char buf[2 + 3 * sizeof(__u16)]; /* enough space for one range */
333 int idx = 0, ret, size;
336 if (request == UAC_GET_CUR) {
337 bRequest = UAC2_CS_CUR;
338 size = sizeof(__u16);
340 bRequest = UAC2_CS_RANGE;
344 memset(buf, 0, sizeof(buf));
346 ret = snd_usb_autoresume(chip) ? -EIO : 0;
350 down_read(&chip->shutdown_rwsem);
351 if (chip->shutdown) {
354 idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8);
355 ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
356 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
357 validx, idx, buf, size);
359 up_read(&chip->shutdown_rwsem);
360 snd_usb_autosuspend(chip);
365 "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
366 request, validx, idx, cval->val_type);
370 /* FIXME: how should we handle multiple triplets here? */
377 val = buf + sizeof(__u16);
380 val = buf + sizeof(__u16) * 2;
383 val = buf + sizeof(__u16) * 3;
389 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16)));
394 static int get_ctl_value(struct usb_mixer_elem_info *cval, int request,
395 int validx, int *value_ret)
397 validx += cval->idx_off;
399 return (cval->head.mixer->protocol == UAC_VERSION_1) ?
400 get_ctl_value_v1(cval, request, validx, value_ret) :
401 get_ctl_value_v2(cval, request, validx, value_ret);
404 static int get_cur_ctl_value(struct usb_mixer_elem_info *cval,
405 int validx, int *value)
407 return get_ctl_value(cval, UAC_GET_CUR, validx, value);
410 /* channel = 0: master, 1 = first channel */
411 static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
412 int channel, int *value)
414 return get_ctl_value(cval, UAC_GET_CUR,
415 (cval->control << 8) | channel,
419 int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
420 int channel, int index, int *value)
424 if (cval->cached & (1 << channel)) {
425 *value = cval->cache_val[index];
428 err = get_cur_mix_raw(cval, channel, value);
430 if (!cval->head.mixer->ignore_ctl_error)
431 usb_audio_dbg(cval->head.mixer->chip,
432 "cannot get current value for control %d ch %d: err = %d\n",
433 cval->control, channel, err);
436 cval->cached |= 1 << channel;
437 cval->cache_val[index] = *value;
445 int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
446 int request, int validx, int value_set)
448 struct snd_usb_audio *chip = cval->head.mixer->chip;
449 unsigned char buf[2];
450 int idx = 0, val_len, err, timeout = 10;
452 validx += cval->idx_off;
454 if (cval->head.mixer->protocol == UAC_VERSION_1) {
455 val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
456 } else { /* UAC_VERSION_2 */
457 /* audio class v2 controls are always 2 bytes in size */
458 val_len = sizeof(__u16);
461 if (request != UAC_SET_CUR) {
462 usb_audio_dbg(chip, "RANGE setting not yet supported\n");
466 request = UAC2_CS_CUR;
469 value_set = convert_bytes_value(cval, value_set);
470 buf[0] = value_set & 0xff;
471 buf[1] = (value_set >> 8) & 0xff;
472 err = snd_usb_autoresume(chip);
475 down_read(&chip->shutdown_rwsem);
476 while (timeout-- > 0) {
479 idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8);
480 if (snd_usb_ctl_msg(chip->dev,
481 usb_sndctrlpipe(chip->dev, 0), request,
482 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
483 validx, idx, buf, val_len) >= 0) {
488 usb_audio_dbg(chip, "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
489 request, validx, idx, cval->val_type, buf[0], buf[1]);
493 up_read(&chip->shutdown_rwsem);
494 snd_usb_autosuspend(chip);
498 static int set_cur_ctl_value(struct usb_mixer_elem_info *cval,
499 int validx, int value)
501 return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value);
504 int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
505 int index, int value)
508 unsigned int read_only = (channel == 0) ?
509 cval->master_readonly :
510 cval->ch_readonly & (1 << (channel - 1));
513 usb_audio_dbg(cval->head.mixer->chip,
514 "%s(): channel %d of control %d is read_only\n",
515 __func__, channel, cval->control);
519 err = snd_usb_mixer_set_ctl_value(cval,
520 UAC_SET_CUR, (cval->control << 8) | channel,
524 cval->cached |= 1 << channel;
525 cval->cache_val[index] = value;
530 * TLV callback for mixer volume controls
532 int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
533 unsigned int size, unsigned int __user *_tlv)
535 struct usb_mixer_elem_info *cval = kcontrol->private_data;
536 DECLARE_TLV_DB_MINMAX(scale, 0, 0);
538 if (size < sizeof(scale))
540 scale[2] = cval->dBmin;
541 scale[3] = cval->dBmax;
542 if (copy_to_user(_tlv, scale, sizeof(scale)))
548 * parser routines begin here...
551 static int parse_audio_unit(struct mixer_build *state, int unitid);
555 * check if the input/output channel routing is enabled on the given bitmap.
556 * used for mixer unit parser
558 static int check_matrix_bitmap(unsigned char *bmap,
559 int ich, int och, int num_outs)
561 int idx = ich * num_outs + och;
562 return bmap[idx >> 3] & (0x80 >> (idx & 7));
566 * add an alsa control element
567 * search and increment the index until an empty slot is found.
569 * if failed, give up and free the control instance.
572 int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list,
573 struct snd_kcontrol *kctl)
575 struct usb_mixer_interface *mixer = list->mixer;
578 while (snd_ctl_find_id(mixer->chip->card, &kctl->id))
580 if ((err = snd_ctl_add(mixer->chip->card, kctl)) < 0) {
581 usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n",
586 list->next_id_elem = mixer->id_elems[list->id];
587 mixer->id_elems[list->id] = list;
592 * get a terminal name string
595 static struct iterm_name_combo {
599 { 0x0300, "Output" },
600 { 0x0301, "Speaker" },
601 { 0x0302, "Headphone" },
602 { 0x0303, "HMD Audio" },
603 { 0x0304, "Desktop Speaker" },
604 { 0x0305, "Room Speaker" },
605 { 0x0306, "Com Speaker" },
607 { 0x0600, "External In" },
608 { 0x0601, "Analog In" },
609 { 0x0602, "Digital In" },
611 { 0x0604, "Legacy In" },
612 { 0x0605, "IEC958 In" },
613 { 0x0606, "1394 DA Stream" },
614 { 0x0607, "1394 DV Stream" },
615 { 0x0700, "Embedded" },
616 { 0x0701, "Noise Source" },
617 { 0x0702, "Equalization Noise" },
621 { 0x0706, "MiniDisk" },
622 { 0x0707, "Analog Tape" },
623 { 0x0708, "Phonograph" },
624 { 0x0709, "VCR Audio" },
625 { 0x070a, "Video Disk Audio" },
626 { 0x070b, "DVD Audio" },
627 { 0x070c, "TV Tuner Audio" },
628 { 0x070d, "Satellite Rec Audio" },
629 { 0x070e, "Cable Tuner Audio" },
630 { 0x070f, "DSS Audio" },
631 { 0x0710, "Radio Receiver" },
632 { 0x0711, "Radio Transmitter" },
633 { 0x0712, "Multi-Track Recorder" },
634 { 0x0713, "Synthesizer" },
638 static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
639 unsigned char *name, int maxlen, int term_only)
641 struct iterm_name_combo *names;
644 return snd_usb_copy_string_desc(state, iterm->name,
647 /* virtual type - not a real terminal */
648 if (iterm->type >> 16) {
651 switch (iterm->type >> 16) {
652 case UAC_SELECTOR_UNIT:
653 strcpy(name, "Selector");
655 case UAC1_PROCESSING_UNIT:
656 strcpy(name, "Process Unit");
658 case UAC1_EXTENSION_UNIT:
659 strcpy(name, "Ext Unit");
662 strcpy(name, "Mixer");
665 return sprintf(name, "Unit %d", iterm->id);
669 switch (iterm->type & 0xff00) {
677 strcpy(name, "Headset");
680 strcpy(name, "Phone");
684 for (names = iterm_names; names->type; names++) {
685 if (names->type == iterm->type) {
686 strcpy(name, names->name);
687 return strlen(names->name);
695 * parse the source unit recursively until it reaches to a terminal
696 * or a branched unit.
698 static int check_input_term(struct mixer_build *state, int id,
699 struct usb_audio_term *term)
704 memset(term, 0, sizeof(*term));
705 while ((p1 = find_audio_control_unit(state, id)) != NULL) {
706 unsigned char *hdr = p1;
709 case UAC_INPUT_TERMINAL:
710 if (state->mixer->protocol == UAC_VERSION_1) {
711 struct uac_input_terminal_descriptor *d = p1;
712 term->type = le16_to_cpu(d->wTerminalType);
713 term->channels = d->bNrChannels;
714 term->chconfig = le16_to_cpu(d->wChannelConfig);
715 term->name = d->iTerminal;
716 } else { /* UAC_VERSION_2 */
717 struct uac2_input_terminal_descriptor *d = p1;
718 term->type = le16_to_cpu(d->wTerminalType);
719 term->channels = d->bNrChannels;
720 term->chconfig = le32_to_cpu(d->bmChannelConfig);
721 term->name = d->iTerminal;
723 /* call recursively to get the clock selectors */
724 err = check_input_term(state, d->bCSourceID, term);
729 case UAC_FEATURE_UNIT: {
730 /* the header is the same for v1 and v2 */
731 struct uac_feature_unit_descriptor *d = p1;
733 break; /* continue to parse */
735 case UAC_MIXER_UNIT: {
736 struct uac_mixer_unit_descriptor *d = p1;
737 term->type = d->bDescriptorSubtype << 16; /* virtual type */
738 term->channels = uac_mixer_unit_bNrChannels(d);
739 term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol);
740 term->name = uac_mixer_unit_iMixer(d);
743 case UAC_SELECTOR_UNIT:
744 case UAC2_CLOCK_SELECTOR: {
745 struct uac_selector_unit_descriptor *d = p1;
746 /* call recursively to retrieve the channel info */
747 err = check_input_term(state, d->baSourceID[0], term);
750 term->type = d->bDescriptorSubtype << 16; /* virtual type */
752 term->name = uac_selector_unit_iSelector(d);
755 case UAC1_PROCESSING_UNIT:
756 case UAC1_EXTENSION_UNIT:
757 /* UAC2_PROCESSING_UNIT_V2 */
758 /* UAC2_EFFECT_UNIT */
759 case UAC2_EXTENSION_UNIT_V2: {
760 struct uac_processing_unit_descriptor *d = p1;
762 if (state->mixer->protocol == UAC_VERSION_2 &&
763 hdr[2] == UAC2_EFFECT_UNIT) {
764 /* UAC2/UAC1 unit IDs overlap here in an
765 * uncompatible way. Ignore this unit for now.
771 id = d->baSourceID[0];
772 break; /* continue to parse */
774 term->type = d->bDescriptorSubtype << 16; /* virtual type */
775 term->channels = uac_processing_unit_bNrChannels(d);
776 term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol);
777 term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol);
780 case UAC2_CLOCK_SOURCE: {
781 struct uac_clock_source_descriptor *d = p1;
782 term->type = d->bDescriptorSubtype << 16; /* virtual type */
784 term->name = d->iClockSource;
798 /* feature unit control information */
799 struct usb_feature_control_info {
801 unsigned int type; /* control type (mute, volume, etc.) */
804 static struct usb_feature_control_info audio_feature_info[] = {
805 { "Mute", USB_MIXER_INV_BOOLEAN },
806 { "Volume", USB_MIXER_S16 },
807 { "Tone Control - Bass", USB_MIXER_S8 },
808 { "Tone Control - Mid", USB_MIXER_S8 },
809 { "Tone Control - Treble", USB_MIXER_S8 },
810 { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
811 { "Auto Gain Control", USB_MIXER_BOOLEAN },
812 { "Delay Control", USB_MIXER_U16 },
813 { "Bass Boost", USB_MIXER_BOOLEAN },
814 { "Loudness", USB_MIXER_BOOLEAN },
816 { "Input Gain Control", USB_MIXER_U16 },
817 { "Input Gain Pad Control", USB_MIXER_BOOLEAN },
818 { "Phase Inverter Control", USB_MIXER_BOOLEAN },
821 /* private_free callback */
822 void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl)
824 kfree(kctl->private_data);
825 kctl->private_data = NULL;
829 * interface to ALSA control for feature/mixer units
832 /* volume control quirks */
833 static void volume_control_quirks(struct usb_mixer_elem_info *cval,
834 struct snd_kcontrol *kctl)
836 struct snd_usb_audio *chip = cval->head.mixer->chip;
837 switch (chip->usb_id) {
838 case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
839 case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */
840 if (strcmp(kctl->id.name, "Effect Duration") == 0) {
846 if (strcmp(kctl->id.name, "Effect Volume") == 0 ||
847 strcmp(kctl->id.name, "Effect Feedback Volume") == 0) {
852 if (strstr(kctl->id.name, "Effect Return") != NULL) {
858 if ((strstr(kctl->id.name, "Playback Volume") != NULL) ||
859 (strstr(kctl->id.name, "Effect Send") != NULL)) {
860 cval->min = 0xb5fb; /* -73 dB = 0xb6ff */
866 case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
867 case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
868 if (strcmp(kctl->id.name, "Effect Duration") == 0) {
870 "set quirk for FTU Effect Duration\n");
876 if (strcmp(kctl->id.name, "Effect Volume") == 0 ||
877 strcmp(kctl->id.name, "Effect Feedback Volume") == 0) {
879 "set quirks for FTU Effect Feedback/Volume\n");
886 case USB_ID(0x0471, 0x0101):
887 case USB_ID(0x0471, 0x0104):
888 case USB_ID(0x0471, 0x0105):
889 case USB_ID(0x0672, 0x1041):
890 /* quirk for UDA1321/N101.
891 * note that detection between firmware 2.1.1.7 (N101)
892 * and later 2.1.1.21 is not very clear from datasheets.
893 * I hope that the min value is -15360 for newer firmware --jk
895 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
896 cval->min == -15616) {
898 "set volume quirk for UDA1321/N101 chip\n");
903 case USB_ID(0x046d, 0x09a4):
904 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
906 "set volume quirk for QuickCam E3500\n");
913 case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */
914 case USB_ID(0x046d, 0x0808):
915 case USB_ID(0x046d, 0x0809):
916 case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */
917 case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */
918 case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */
919 case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
920 case USB_ID(0x046d, 0x0991):
921 /* Most audio usb devices lie about volume resolution.
922 * Most Logitech webcams have res = 384.
923 * Proboly there is some logitech magic behind this number --fishor
925 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
927 "set resolution quirk: cval->res = 384\n");
935 * retrieve the minimum and maximum values for the specified control
937 static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval,
938 int default_min, struct snd_kcontrol *kctl)
941 cval->min = default_min;
942 cval->max = cval->min + 1;
944 cval->dBmin = cval->dBmax = 0;
946 if (cval->val_type == USB_MIXER_BOOLEAN ||
947 cval->val_type == USB_MIXER_INV_BOOLEAN) {
948 cval->initialized = 1;
953 for (i = 0; i < MAX_CHANNELS; i++)
954 if (cval->cmask & (1 << i)) {
959 if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
960 get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
961 usb_audio_err(cval->head.mixer->chip,
962 "%d:%d: cannot get min/max values for control %d (id %d)\n",
963 cval->head.id, snd_usb_ctrl_intf(cval->head.mixer->chip),
964 cval->control, cval->head.id);
967 if (get_ctl_value(cval, UAC_GET_RES,
968 (cval->control << 8) | minchn,
972 int last_valid_res = cval->res;
974 while (cval->res > 1) {
975 if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES,
976 (cval->control << 8) | minchn,
981 if (get_ctl_value(cval, UAC_GET_RES,
982 (cval->control << 8) | minchn, &cval->res) < 0)
983 cval->res = last_valid_res;
988 /* Additional checks for the proper resolution
990 * Some devices report smaller resolutions than actually
991 * reacting. They don't return errors but simply clip
992 * to the lower aligned value.
994 if (cval->min + cval->res < cval->max) {
995 int last_valid_res = cval->res;
996 int saved, test, check;
997 get_cur_mix_raw(cval, minchn, &saved);
1000 if (test < cval->max)
1004 if (test < cval->min || test > cval->max ||
1005 snd_usb_set_cur_mix_value(cval, minchn, 0, test) ||
1006 get_cur_mix_raw(cval, minchn, &check)) {
1007 cval->res = last_valid_res;
1014 snd_usb_set_cur_mix_value(cval, minchn, 0, saved);
1017 cval->initialized = 1;
1021 volume_control_quirks(cval, kctl);
1023 /* USB descriptions contain the dB scale in 1/256 dB unit
1024 * while ALSA TLV contains in 1/100 dB unit
1026 cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256;
1027 cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256;
1028 if (cval->dBmin > cval->dBmax) {
1029 /* something is wrong; assume it's either from/to 0dB */
1030 if (cval->dBmin < 0)
1032 else if (cval->dBmin > 0)
1034 if (cval->dBmin > cval->dBmax) {
1035 /* totally crap, return an error */
1043 #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL)
1045 /* get a feature/mixer unit info */
1046 static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol,
1047 struct snd_ctl_elem_info *uinfo)
1049 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1051 if (cval->val_type == USB_MIXER_BOOLEAN ||
1052 cval->val_type == USB_MIXER_INV_BOOLEAN)
1053 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1055 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1056 uinfo->count = cval->channels;
1057 if (cval->val_type == USB_MIXER_BOOLEAN ||
1058 cval->val_type == USB_MIXER_INV_BOOLEAN) {
1059 uinfo->value.integer.min = 0;
1060 uinfo->value.integer.max = 1;
1062 if (!cval->initialized) {
1063 get_min_max_with_quirks(cval, 0, kcontrol);
1064 if (cval->initialized && cval->dBmin >= cval->dBmax) {
1065 kcontrol->vd[0].access &=
1066 ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1067 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK);
1068 snd_ctl_notify(cval->head.mixer->chip->card,
1069 SNDRV_CTL_EVENT_MASK_INFO,
1073 uinfo->value.integer.min = 0;
1074 uinfo->value.integer.max =
1075 (cval->max - cval->min + cval->res - 1) / cval->res;
1080 /* get the current value from feature/mixer unit */
1081 static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol,
1082 struct snd_ctl_elem_value *ucontrol)
1084 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1085 int c, cnt, val, err;
1087 ucontrol->value.integer.value[0] = cval->min;
1090 for (c = 0; c < MAX_CHANNELS; c++) {
1091 if (!(cval->cmask & (1 << c)))
1093 err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &val);
1095 return filter_error(cval, err);
1096 val = get_relative_value(cval, val);
1097 ucontrol->value.integer.value[cnt] = val;
1102 /* master channel */
1103 err = snd_usb_get_cur_mix_value(cval, 0, 0, &val);
1105 return filter_error(cval, err);
1106 val = get_relative_value(cval, val);
1107 ucontrol->value.integer.value[0] = val;
1112 /* put the current value to feature/mixer unit */
1113 static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol,
1114 struct snd_ctl_elem_value *ucontrol)
1116 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1117 int c, cnt, val, oval, err;
1122 for (c = 0; c < MAX_CHANNELS; c++) {
1123 if (!(cval->cmask & (1 << c)))
1125 err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &oval);
1127 return filter_error(cval, err);
1128 val = ucontrol->value.integer.value[cnt];
1129 val = get_abs_value(cval, val);
1131 snd_usb_set_cur_mix_value(cval, c + 1, cnt, val);
1137 /* master channel */
1138 err = snd_usb_get_cur_mix_value(cval, 0, 0, &oval);
1140 return filter_error(cval, err);
1141 val = ucontrol->value.integer.value[0];
1142 val = get_abs_value(cval, val);
1144 snd_usb_set_cur_mix_value(cval, 0, 0, val);
1151 static struct snd_kcontrol_new usb_feature_unit_ctl = {
1152 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1153 .name = "", /* will be filled later manually */
1154 .info = mixer_ctl_feature_info,
1155 .get = mixer_ctl_feature_get,
1156 .put = mixer_ctl_feature_put,
1159 /* the read-only variant */
1160 static struct snd_kcontrol_new usb_feature_unit_ctl_ro = {
1161 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1162 .name = "", /* will be filled later manually */
1163 .info = mixer_ctl_feature_info,
1164 .get = mixer_ctl_feature_get,
1169 * This symbol is exported in order to allow the mixer quirks to
1170 * hook up to the standard feature unit control mechanism
1172 struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl;
1175 * build a feature control
1177 static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
1179 return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
1183 * A lot of headsets/headphones have a "Speaker" mixer. Make sure we
1184 * rename it to "Headphone". We determine if something is a headphone
1185 * similar to how udev determines form factor.
1187 static void check_no_speaker_on_headset(struct snd_kcontrol *kctl,
1188 struct snd_card *card)
1190 const char *names_to_check[] = {
1191 "Headset", "headset", "Headphone", "headphone", NULL};
1195 if (strcmp("Speaker", kctl->id.name))
1198 for (s = names_to_check; *s; s++)
1199 if (strstr(card->shortname, *s)) {
1207 strlcpy(kctl->id.name, "Headphone", sizeof(kctl->id.name));
1210 static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
1211 unsigned int ctl_mask, int control,
1212 struct usb_audio_term *iterm, int unitid,
1215 struct uac_feature_unit_descriptor *desc = raw_desc;
1216 unsigned int len = 0;
1217 int mapped_name = 0;
1218 int nameid = uac_feature_unit_iFeature(desc);
1219 struct snd_kcontrol *kctl;
1220 struct usb_mixer_elem_info *cval;
1221 const struct usbmix_name_map *map;
1224 control++; /* change from zero-based to 1-based value */
1226 if (control == UAC_FU_GRAPHIC_EQUALIZER) {
1227 /* FIXME: not supported yet */
1231 map = find_map(state, unitid, control);
1232 if (check_ignored_ctl(map))
1235 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1238 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
1239 cval->control = control;
1240 cval->cmask = ctl_mask;
1241 cval->val_type = audio_feature_info[control-1].type;
1242 if (ctl_mask == 0) {
1243 cval->channels = 1; /* master channel */
1244 cval->master_readonly = readonly_mask;
1247 for (i = 0; i < 16; i++)
1248 if (ctl_mask & (1 << i))
1251 cval->ch_readonly = readonly_mask;
1255 * If all channels in the mask are marked read-only, make the control
1256 * read-only. snd_usb_set_cur_mix_value() will check the mask again and won't
1257 * issue write commands to read-only channels.
1259 if (cval->channels == readonly_mask)
1260 kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval);
1262 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1265 usb_audio_err(state->chip, "cannot malloc kcontrol\n");
1269 kctl->private_free = snd_usb_mixer_elem_free;
1271 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1272 mapped_name = len != 0;
1274 len = snd_usb_copy_string_desc(state, nameid,
1275 kctl->id.name, sizeof(kctl->id.name));
1281 * determine the control name. the rule is:
1282 * - if a name id is given in descriptor, use it.
1283 * - if the connected input can be determined, then use the name
1285 * - if the connected output can be determined, use it.
1286 * - otherwise, anonymous name.
1289 len = get_term_name(state, iterm, kctl->id.name,
1290 sizeof(kctl->id.name), 1);
1292 len = get_term_name(state, &state->oterm,
1294 sizeof(kctl->id.name), 1);
1296 snprintf(kctl->id.name, sizeof(kctl->id.name),
1297 "Feature %d", unitid);
1301 check_no_speaker_on_headset(kctl, state->mixer->chip->card);
1304 * determine the stream direction:
1305 * if the connected output is USB stream, then it's likely a
1306 * capture stream. otherwise it should be playback (hopefully :)
1308 if (!mapped_name && !(state->oterm.type >> 16)) {
1309 if ((state->oterm.type & 0xff00) == 0x0100)
1310 append_ctl_name(kctl, " Capture");
1312 append_ctl_name(kctl, " Playback");
1314 append_ctl_name(kctl, control == UAC_FU_MUTE ?
1315 " Switch" : " Volume");
1319 strlcpy(kctl->id.name, audio_feature_info[control-1].name,
1320 sizeof(kctl->id.name));
1324 /* get min/max values */
1325 get_min_max_with_quirks(cval, 0, kctl);
1327 if (control == UAC_FU_VOLUME) {
1328 check_mapped_dB(map, cval);
1329 if (cval->dBmin < cval->dBmax || !cval->initialized) {
1330 kctl->tlv.c = snd_usb_mixer_vol_tlv;
1331 kctl->vd[0].access |=
1332 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1333 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
1337 range = (cval->max - cval->min) / cval->res;
1339 * Are there devices with volume range more than 255? I use a bit more
1340 * to be sure. 384 is a resolution magic number found on Logitech
1341 * devices. It will definitively catch all buggy Logitech devices.
1344 usb_audio_warn(state->chip,
1345 "Warning! Unlikely big volume range (=%u), cval->res is probably wrong.",
1347 usb_audio_warn(state->chip,
1348 "[%d] FU [%s] ch = %d, val = %d/%d/%d",
1349 cval->head.id, kctl->id.name, cval->channels,
1350 cval->min, cval->max, cval->res);
1353 usb_audio_dbg(state->chip, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1354 cval->head.id, kctl->id.name, cval->channels,
1355 cval->min, cval->max, cval->res);
1356 snd_usb_mixer_add_control(&cval->head, kctl);
1360 * parse a feature unit
1362 * most of controls are defined here.
1364 static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
1368 struct usb_audio_term iterm;
1369 unsigned int master_bits, first_ch_bits;
1371 struct uac_feature_unit_descriptor *hdr = _ftr;
1374 if (state->mixer->protocol == UAC_VERSION_1) {
1375 csize = hdr->bControlSize;
1377 usb_audio_dbg(state->chip,
1378 "unit %u: invalid bControlSize == 0\n",
1382 channels = (hdr->bLength - 7) / csize - 1;
1383 bmaControls = hdr->bmaControls;
1384 if (hdr->bLength < 7 + csize) {
1385 usb_audio_err(state->chip,
1386 "unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
1391 struct uac2_feature_unit_descriptor *ftr = _ftr;
1393 channels = (hdr->bLength - 6) / 4 - 1;
1394 bmaControls = ftr->bmaControls;
1395 if (hdr->bLength < 6 + csize) {
1396 usb_audio_err(state->chip,
1397 "unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
1403 /* parse the source unit */
1404 if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0)
1407 /* determine the input source type and name */
1408 err = check_input_term(state, hdr->bSourceID, &iterm);
1412 master_bits = snd_usb_combine_bytes(bmaControls, csize);
1413 /* master configuration quirks */
1414 switch (state->chip->usb_id) {
1415 case USB_ID(0x08bb, 0x2702):
1416 usb_audio_info(state->chip,
1417 "usbmixer: master volume quirk for PCM2702 chip\n");
1418 /* disable non-functional volume control */
1419 master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME);
1421 case USB_ID(0x1130, 0xf211):
1422 usb_audio_info(state->chip,
1423 "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n");
1424 /* disable non-functional volume control */
1430 first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize);
1434 if (state->mixer->protocol == UAC_VERSION_1) {
1435 /* check all control types */
1436 for (i = 0; i < 10; i++) {
1437 unsigned int ch_bits = 0;
1438 for (j = 0; j < channels; j++) {
1441 mask = snd_usb_combine_bytes(bmaControls +
1442 csize * (j+1), csize);
1443 if (mask & (1 << i))
1444 ch_bits |= (1 << j);
1446 /* audio class v1 controls are never read-only */
1449 * The first channel must be set
1450 * (for ease of programming).
1453 build_feature_ctl(state, _ftr, ch_bits, i,
1455 if (master_bits & (1 << i))
1456 build_feature_ctl(state, _ftr, 0, i, &iterm,
1459 } else { /* UAC_VERSION_2 */
1460 for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) {
1461 unsigned int ch_bits = 0;
1462 unsigned int ch_read_only = 0;
1464 for (j = 0; j < channels; j++) {
1467 mask = snd_usb_combine_bytes(bmaControls +
1468 csize * (j+1), csize);
1469 if (uac2_control_is_readable(mask, i)) {
1470 ch_bits |= (1 << j);
1471 if (!uac2_control_is_writeable(mask, i))
1472 ch_read_only |= (1 << j);
1477 * NOTE: build_feature_ctl() will mark the control
1478 * read-only if all channels are marked read-only in
1479 * the descriptors. Otherwise, the control will be
1480 * reported as writeable, but the driver will not
1481 * actually issue a write command for read-only
1486 * The first channel must be set
1487 * (for ease of programming).
1490 build_feature_ctl(state, _ftr, ch_bits, i,
1491 &iterm, unitid, ch_read_only);
1492 if (uac2_control_is_readable(master_bits, i))
1493 build_feature_ctl(state, _ftr, 0, i, &iterm, unitid,
1494 !uac2_control_is_writeable(master_bits, i));
1506 * build a mixer unit control
1508 * the callbacks are identical with feature unit.
1509 * input channel number (zero based) is given in control field instead.
1511 static void build_mixer_unit_ctl(struct mixer_build *state,
1512 struct uac_mixer_unit_descriptor *desc,
1513 int in_pin, int in_ch, int unitid,
1514 struct usb_audio_term *iterm)
1516 struct usb_mixer_elem_info *cval;
1517 unsigned int num_outs = uac_mixer_unit_bNrChannels(desc);
1518 unsigned int i, len;
1519 struct snd_kcontrol *kctl;
1520 const struct usbmix_name_map *map;
1522 map = find_map(state, unitid, 0);
1523 if (check_ignored_ctl(map))
1526 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1530 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
1531 cval->control = in_ch + 1; /* based on 1 */
1532 cval->val_type = USB_MIXER_S16;
1533 for (i = 0; i < num_outs; i++) {
1534 __u8 *c = uac_mixer_unit_bmControls(desc, state->mixer->protocol);
1536 if (check_matrix_bitmap(c, in_ch, i, num_outs)) {
1537 cval->cmask |= (1 << i);
1542 /* get min/max values */
1543 get_min_max(cval, 0);
1545 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1547 usb_audio_err(state->chip, "cannot malloc kcontrol\n");
1551 kctl->private_free = snd_usb_mixer_elem_free;
1553 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1555 len = get_term_name(state, iterm, kctl->id.name,
1556 sizeof(kctl->id.name), 0);
1558 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
1559 append_ctl_name(kctl, " Volume");
1561 usb_audio_dbg(state->chip, "[%d] MU [%s] ch = %d, val = %d/%d\n",
1562 cval->head.id, kctl->id.name, cval->channels, cval->min, cval->max);
1563 snd_usb_mixer_add_control(&cval->head, kctl);
1567 * parse a mixer unit
1569 static int parse_audio_mixer_unit(struct mixer_build *state, int unitid,
1572 struct uac_mixer_unit_descriptor *desc = raw_desc;
1573 struct usb_audio_term iterm;
1574 int input_pins, num_ins, num_outs;
1577 if (desc->bLength < 11 || !(input_pins = desc->bNrInPins) ||
1578 !(num_outs = uac_mixer_unit_bNrChannels(desc))) {
1579 usb_audio_err(state->chip,
1580 "invalid MIXER UNIT descriptor %d\n",
1584 /* no bmControls field (e.g. Maya44) -> ignore */
1585 if (desc->bLength <= 10 + input_pins) {
1586 usb_audio_dbg(state->chip, "MU %d has no bmControls field\n",
1593 for (pin = 0; pin < input_pins; pin++) {
1594 err = parse_audio_unit(state, desc->baSourceID[pin]);
1597 err = check_input_term(state, desc->baSourceID[pin], &iterm);
1600 num_ins += iterm.channels;
1601 for (; ich < num_ins; ich++) {
1602 int och, ich_has_controls = 0;
1604 for (och = 0; och < num_outs; och++) {
1605 __u8 *c = uac_mixer_unit_bmControls(desc,
1606 state->mixer->protocol);
1608 if (check_matrix_bitmap(c, ich, och, num_outs)) {
1609 ich_has_controls = 1;
1613 if (ich_has_controls)
1614 build_mixer_unit_ctl(state, desc, pin, ich,
1622 * Processing Unit / Extension Unit
1625 /* get callback for processing/extension unit */
1626 static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol,
1627 struct snd_ctl_elem_value *ucontrol)
1629 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1632 err = get_cur_ctl_value(cval, cval->control << 8, &val);
1634 ucontrol->value.integer.value[0] = cval->min;
1635 return filter_error(cval, err);
1637 val = get_relative_value(cval, val);
1638 ucontrol->value.integer.value[0] = val;
1642 /* put callback for processing/extension unit */
1643 static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol,
1644 struct snd_ctl_elem_value *ucontrol)
1646 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1649 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1651 return filter_error(cval, err);
1652 val = ucontrol->value.integer.value[0];
1653 val = get_abs_value(cval, val);
1655 set_cur_ctl_value(cval, cval->control << 8, val);
1661 /* alsa control interface for processing/extension unit */
1662 static struct snd_kcontrol_new mixer_procunit_ctl = {
1663 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1664 .name = "", /* will be filled later */
1665 .info = mixer_ctl_feature_info,
1666 .get = mixer_ctl_procunit_get,
1667 .put = mixer_ctl_procunit_put,
1671 * predefined data for processing units
1673 struct procunit_value_info {
1680 struct procunit_info {
1683 struct procunit_value_info *values;
1686 static struct procunit_value_info updown_proc_info[] = {
1687 { UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN },
1688 { UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 },
1691 static struct procunit_value_info prologic_proc_info[] = {
1692 { UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN },
1693 { UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 },
1696 static struct procunit_value_info threed_enh_proc_info[] = {
1697 { UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN },
1698 { UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 },
1701 static struct procunit_value_info reverb_proc_info[] = {
1702 { UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN },
1703 { UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
1704 { UAC_REVERB_TIME, "Time", USB_MIXER_U16 },
1705 { UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 },
1708 static struct procunit_value_info chorus_proc_info[] = {
1709 { UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN },
1710 { UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
1711 { UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
1712 { UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1715 static struct procunit_value_info dcr_proc_info[] = {
1716 { UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN },
1717 { UAC_DCR_RATE, "Ratio", USB_MIXER_U16 },
1718 { UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 },
1719 { UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
1720 { UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 },
1721 { UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 },
1725 static struct procunit_info procunits[] = {
1726 { UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info },
1727 { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info },
1728 { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info },
1729 { UAC_PROCESS_REVERB, "Reverb", reverb_proc_info },
1730 { UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info },
1731 { UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info },
1735 * predefined data for extension units
1737 static struct procunit_value_info clock_rate_xu_info[] = {
1738 { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 },
1741 static struct procunit_value_info clock_source_xu_info[] = {
1742 { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN },
1745 static struct procunit_value_info spdif_format_xu_info[] = {
1746 { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN },
1749 static struct procunit_value_info soft_limit_xu_info[] = {
1750 { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN },
1753 static struct procunit_info extunits[] = {
1754 { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info },
1755 { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info },
1756 { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info },
1757 { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
1762 * build a processing/extension unit
1764 static int build_audio_procunit(struct mixer_build *state, int unitid,
1765 void *raw_desc, struct procunit_info *list,
1768 struct uac_processing_unit_descriptor *desc = raw_desc;
1769 int num_ins = desc->bNrInPins;
1770 struct usb_mixer_elem_info *cval;
1771 struct snd_kcontrol *kctl;
1772 int i, err, nameid, type, len;
1773 struct procunit_info *info;
1774 struct procunit_value_info *valinfo;
1775 const struct usbmix_name_map *map;
1776 static struct procunit_value_info default_value_info[] = {
1777 { 0x01, "Switch", USB_MIXER_BOOLEAN },
1780 static struct procunit_info default_info = {
1781 0, NULL, default_value_info
1784 if (desc->bLength < 13 || desc->bLength < 13 + num_ins ||
1785 desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) {
1786 usb_audio_err(state->chip, "invalid %s descriptor (id %d)\n", name, unitid);
1790 for (i = 0; i < num_ins; i++) {
1791 if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0)
1795 type = le16_to_cpu(desc->wProcessType);
1796 for (info = list; info && info->type; info++)
1797 if (info->type == type)
1799 if (!info || !info->type)
1800 info = &default_info;
1802 for (valinfo = info->values; valinfo->control; valinfo++) {
1803 __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol);
1805 if (!(controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1))))
1807 map = find_map(state, unitid, valinfo->control);
1808 if (check_ignored_ctl(map))
1810 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1813 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
1814 cval->control = valinfo->control;
1815 cval->val_type = valinfo->val_type;
1818 /* get min/max values */
1819 if (type == UAC_PROCESS_UP_DOWNMIX && cval->control == UAC_UD_MODE_SELECT) {
1820 __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol);
1821 /* FIXME: hard-coded */
1823 cval->max = control_spec[0];
1825 cval->initialized = 1;
1827 if (type == USB_XU_CLOCK_RATE) {
1829 * E-Mu USB 0404/0202/TrackerPre/0204
1830 * samplerate control quirk
1835 cval->initialized = 1;
1837 get_min_max(cval, valinfo->min_value);
1840 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
1845 kctl->private_free = snd_usb_mixer_elem_free;
1847 if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name))) {
1849 } else if (info->name) {
1850 strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
1852 nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol);
1855 len = snd_usb_copy_string_desc(state, nameid,
1857 sizeof(kctl->id.name));
1859 strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
1861 append_ctl_name(kctl, " ");
1862 append_ctl_name(kctl, valinfo->suffix);
1864 usb_audio_dbg(state->chip,
1865 "[%d] PU [%s] ch = %d, val = %d/%d\n",
1866 cval->head.id, kctl->id.name, cval->channels,
1867 cval->min, cval->max);
1869 err = snd_usb_mixer_add_control(&cval->head, kctl);
1876 static int parse_audio_processing_unit(struct mixer_build *state, int unitid,
1879 return build_audio_procunit(state, unitid, raw_desc,
1880 procunits, "Processing Unit");
1883 static int parse_audio_extension_unit(struct mixer_build *state, int unitid,
1887 * Note that we parse extension units with processing unit descriptors.
1888 * That's ok as the layout is the same.
1890 return build_audio_procunit(state, unitid, raw_desc,
1891 extunits, "Extension Unit");
1899 * info callback for selector unit
1900 * use an enumerator type for routing
1902 static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol,
1903 struct snd_ctl_elem_info *uinfo)
1905 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1906 const char **itemlist = (const char **)kcontrol->private_value;
1908 if (snd_BUG_ON(!itemlist))
1910 return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist);
1913 /* get callback for selector unit */
1914 static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol,
1915 struct snd_ctl_elem_value *ucontrol)
1917 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1920 err = get_cur_ctl_value(cval, cval->control << 8, &val);
1922 ucontrol->value.enumerated.item[0] = 0;
1923 return filter_error(cval, err);
1925 val = get_relative_value(cval, val);
1926 ucontrol->value.enumerated.item[0] = val;
1930 /* put callback for selector unit */
1931 static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol,
1932 struct snd_ctl_elem_value *ucontrol)
1934 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1937 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
1939 return filter_error(cval, err);
1940 val = ucontrol->value.enumerated.item[0];
1941 val = get_abs_value(cval, val);
1943 set_cur_ctl_value(cval, cval->control << 8, val);
1949 /* alsa control interface for selector unit */
1950 static struct snd_kcontrol_new mixer_selectunit_ctl = {
1951 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1952 .name = "", /* will be filled later */
1953 .info = mixer_ctl_selector_info,
1954 .get = mixer_ctl_selector_get,
1955 .put = mixer_ctl_selector_put,
1959 * private free callback.
1960 * free both private_data and private_value
1962 static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1966 if (kctl->private_data) {
1967 struct usb_mixer_elem_info *cval = kctl->private_data;
1968 num_ins = cval->max;
1970 kctl->private_data = NULL;
1972 if (kctl->private_value) {
1973 char **itemlist = (char **)kctl->private_value;
1974 for (i = 0; i < num_ins; i++)
1977 kctl->private_value = 0;
1982 * parse a selector unit
1984 static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
1987 struct uac_selector_unit_descriptor *desc = raw_desc;
1988 unsigned int i, nameid, len;
1990 struct usb_mixer_elem_info *cval;
1991 struct snd_kcontrol *kctl;
1992 const struct usbmix_name_map *map;
1995 if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) {
1996 usb_audio_err(state->chip,
1997 "invalid SELECTOR UNIT descriptor %d\n", unitid);
2001 for (i = 0; i < desc->bNrInPins; i++) {
2002 if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0)
2006 if (desc->bNrInPins == 1) /* only one ? nonsense! */
2009 map = find_map(state, unitid, 0);
2010 if (check_ignored_ctl(map))
2013 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
2016 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
2017 cval->val_type = USB_MIXER_U8;
2020 cval->max = desc->bNrInPins;
2022 cval->initialized = 1;
2024 if (state->mixer->protocol == UAC_VERSION_1)
2026 else /* UAC_VERSION_2 */
2027 cval->control = (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) ?
2028 UAC2_CX_CLOCK_SELECTOR : UAC2_SU_SELECTOR;
2030 namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL);
2035 #define MAX_ITEM_NAME_LEN 64
2036 for (i = 0; i < desc->bNrInPins; i++) {
2037 struct usb_audio_term iterm;
2039 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
2047 len = check_mapped_selector_name(state, unitid, i, namelist[i],
2049 if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0)
2050 len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
2052 sprintf(namelist[i], "Input %u", i);
2055 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
2057 usb_audio_err(state->chip, "cannot malloc kcontrol\n");
2062 kctl->private_value = (unsigned long)namelist;
2063 kctl->private_free = usb_mixer_selector_elem_free;
2065 nameid = uac_selector_unit_iSelector(desc);
2066 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
2070 snd_usb_copy_string_desc(state, nameid, kctl->id.name,
2071 sizeof(kctl->id.name));
2073 len = get_term_name(state, &state->oterm,
2074 kctl->id.name, sizeof(kctl->id.name), 0);
2076 strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
2078 if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR)
2079 append_ctl_name(kctl, " Clock Source");
2080 else if ((state->oterm.type & 0xff00) == 0x0100)
2081 append_ctl_name(kctl, " Capture Source");
2083 append_ctl_name(kctl, " Playback Source");
2086 usb_audio_dbg(state->chip, "[%d] SU [%s] items = %d\n",
2087 cval->head.id, kctl->id.name, desc->bNrInPins);
2088 return snd_usb_mixer_add_control(&cval->head, kctl);
2092 * parse an audio unit recursively
2095 static int parse_audio_unit(struct mixer_build *state, int unitid)
2099 if (test_and_set_bit(unitid, state->unitbitmap))
2100 return 0; /* the unit already visited */
2102 p1 = find_audio_control_unit(state, unitid);
2104 usb_audio_err(state->chip, "unit %d not found!\n", unitid);
2109 case UAC_INPUT_TERMINAL:
2110 case UAC2_CLOCK_SOURCE:
2112 case UAC_MIXER_UNIT:
2113 return parse_audio_mixer_unit(state, unitid, p1);
2114 case UAC_SELECTOR_UNIT:
2115 case UAC2_CLOCK_SELECTOR:
2116 return parse_audio_selector_unit(state, unitid, p1);
2117 case UAC_FEATURE_UNIT:
2118 return parse_audio_feature_unit(state, unitid, p1);
2119 case UAC1_PROCESSING_UNIT:
2120 /* UAC2_EFFECT_UNIT has the same value */
2121 if (state->mixer->protocol == UAC_VERSION_1)
2122 return parse_audio_processing_unit(state, unitid, p1);
2124 return 0; /* FIXME - effect units not implemented yet */
2125 case UAC1_EXTENSION_UNIT:
2126 /* UAC2_PROCESSING_UNIT_V2 has the same value */
2127 if (state->mixer->protocol == UAC_VERSION_1)
2128 return parse_audio_extension_unit(state, unitid, p1);
2129 else /* UAC_VERSION_2 */
2130 return parse_audio_processing_unit(state, unitid, p1);
2131 case UAC2_EXTENSION_UNIT_V2:
2132 return parse_audio_extension_unit(state, unitid, p1);
2134 usb_audio_err(state->chip,
2135 "unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
2140 static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
2142 kfree(mixer->id_elems);
2144 kfree(mixer->urb->transfer_buffer);
2145 usb_free_urb(mixer->urb);
2147 usb_free_urb(mixer->rc_urb);
2148 kfree(mixer->rc_setup_packet);
2152 static int snd_usb_mixer_dev_free(struct snd_device *device)
2154 struct usb_mixer_interface *mixer = device->device_data;
2155 snd_usb_mixer_free(mixer);
2160 * create mixer controls
2162 * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers
2164 static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
2166 struct mixer_build state;
2168 const struct usbmix_ctl_map *map;
2171 memset(&state, 0, sizeof(state));
2172 state.chip = mixer->chip;
2173 state.mixer = mixer;
2174 state.buffer = mixer->hostif->extra;
2175 state.buflen = mixer->hostif->extralen;
2177 /* check the mapping table */
2178 for (map = usbmix_ctl_maps; map->id; map++) {
2179 if (map->id == state.chip->usb_id) {
2180 state.map = map->map;
2181 state.selector_map = map->selector_map;
2182 mixer->ignore_ctl_error = map->ignore_ctl_error;
2188 while ((p = snd_usb_find_csint_desc(mixer->hostif->extra,
2189 mixer->hostif->extralen,
2190 p, UAC_OUTPUT_TERMINAL)) != NULL) {
2191 if (mixer->protocol == UAC_VERSION_1) {
2192 struct uac1_output_terminal_descriptor *desc = p;
2194 if (desc->bLength < sizeof(*desc))
2195 continue; /* invalid descriptor? */
2196 /* mark terminal ID as visited */
2197 set_bit(desc->bTerminalID, state.unitbitmap);
2198 state.oterm.id = desc->bTerminalID;
2199 state.oterm.type = le16_to_cpu(desc->wTerminalType);
2200 state.oterm.name = desc->iTerminal;
2201 err = parse_audio_unit(&state, desc->bSourceID);
2202 if (err < 0 && err != -EINVAL)
2204 } else { /* UAC_VERSION_2 */
2205 struct uac2_output_terminal_descriptor *desc = p;
2207 if (desc->bLength < sizeof(*desc))
2208 continue; /* invalid descriptor? */
2209 /* mark terminal ID as visited */
2210 set_bit(desc->bTerminalID, state.unitbitmap);
2211 state.oterm.id = desc->bTerminalID;
2212 state.oterm.type = le16_to_cpu(desc->wTerminalType);
2213 state.oterm.name = desc->iTerminal;
2214 err = parse_audio_unit(&state, desc->bSourceID);
2215 if (err < 0 && err != -EINVAL)
2219 * For UAC2, use the same approach to also add the
2222 err = parse_audio_unit(&state, desc->bCSourceID);
2223 if (err < 0 && err != -EINVAL)
2231 void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid)
2233 struct usb_mixer_elem_list *list;
2235 for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem)
2236 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
2240 static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
2241 struct usb_mixer_elem_list *list)
2243 struct usb_mixer_elem_info *cval = (struct usb_mixer_elem_info *)list;
2244 static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN",
2245 "S8", "U8", "S16", "U16"};
2246 snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, "
2247 "channels=%i, type=\"%s\"\n", cval->head.id,
2248 cval->control, cval->cmask, cval->channels,
2249 val_types[cval->val_type]);
2250 snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n",
2251 cval->min, cval->max, cval->dBmin, cval->dBmax);
2254 static void snd_usb_mixer_proc_read(struct snd_info_entry *entry,
2255 struct snd_info_buffer *buffer)
2257 struct snd_usb_audio *chip = entry->private_data;
2258 struct usb_mixer_interface *mixer;
2259 struct usb_mixer_elem_list *list;
2262 list_for_each_entry(mixer, &chip->mixer_list, list) {
2264 "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n",
2265 chip->usb_id, snd_usb_ctrl_intf(chip),
2266 mixer->ignore_ctl_error);
2267 snd_iprintf(buffer, "Card: %s\n", chip->card->longname);
2268 for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) {
2269 for (list = mixer->id_elems[unitid]; list;
2270 list = list->next_id_elem) {
2271 snd_iprintf(buffer, " Unit: %i\n", list->id);
2274 " Control: name=\"%s\", index=%i\n",
2275 list->kctl->id.name,
2276 list->kctl->id.index);
2278 list->dump(buffer, list);
2284 static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer,
2285 int attribute, int value, int index)
2287 struct usb_mixer_elem_list *list;
2288 __u8 unitid = (index >> 8) & 0xff;
2289 __u8 control = (value >> 8) & 0xff;
2290 __u8 channel = value & 0xff;
2292 if (channel >= MAX_CHANNELS) {
2293 usb_audio_dbg(mixer->chip,
2294 "%s(): bogus channel number %d\n",
2299 for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem) {
2300 struct usb_mixer_elem_info *info;
2305 info = (struct usb_mixer_elem_info *)list;
2306 if (info->control != control)
2309 switch (attribute) {
2311 /* invalidate cache, so the value is read from the device */
2313 info->cached &= ~(1 << channel);
2314 else /* master channel */
2317 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
2318 &info->head.kctl->id);
2330 usb_audio_dbg(mixer->chip,
2331 "unknown attribute %d in interrupt\n",
2338 static void snd_usb_mixer_interrupt(struct urb *urb)
2340 struct usb_mixer_interface *mixer = urb->context;
2341 int len = urb->actual_length;
2342 int ustatus = urb->status;
2347 if (mixer->protocol == UAC_VERSION_1) {
2348 struct uac1_status_word *status;
2350 for (status = urb->transfer_buffer;
2351 len >= sizeof(*status);
2352 len -= sizeof(*status), status++) {
2353 dev_dbg(&urb->dev->dev, "status interrupt: %02x %02x\n",
2354 status->bStatusType,
2355 status->bOriginator);
2357 /* ignore any notifications not from the control interface */
2358 if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) !=
2359 UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF)
2362 if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED)
2363 snd_usb_mixer_rc_memory_change(mixer, status->bOriginator);
2365 snd_usb_mixer_notify_id(mixer, status->bOriginator);
2367 } else { /* UAC_VERSION_2 */
2368 struct uac2_interrupt_data_msg *msg;
2370 for (msg = urb->transfer_buffer;
2371 len >= sizeof(*msg);
2372 len -= sizeof(*msg), msg++) {
2373 /* drop vendor specific and endpoint requests */
2374 if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) ||
2375 (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP))
2378 snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute,
2379 le16_to_cpu(msg->wValue),
2380 le16_to_cpu(msg->wIndex));
2385 if (ustatus != -ENOENT &&
2386 ustatus != -ECONNRESET &&
2387 ustatus != -ESHUTDOWN) {
2388 urb->dev = mixer->chip->dev;
2389 usb_submit_urb(urb, GFP_ATOMIC);
2393 /* create the handler for the optional status interrupt endpoint */
2394 static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
2396 struct usb_endpoint_descriptor *ep;
2397 void *transfer_buffer;
2401 /* we need one interrupt input endpoint */
2402 if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1)
2404 ep = get_endpoint(mixer->hostif, 0);
2405 if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
2408 epnum = usb_endpoint_num(ep);
2409 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
2410 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
2411 if (!transfer_buffer)
2413 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
2415 kfree(transfer_buffer);
2418 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
2419 usb_rcvintpipe(mixer->chip->dev, epnum),
2420 transfer_buffer, buffer_length,
2421 snd_usb_mixer_interrupt, mixer, ep->bInterval);
2422 usb_submit_urb(mixer->urb, GFP_KERNEL);
2426 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
2429 static struct snd_device_ops dev_ops = {
2430 .dev_free = snd_usb_mixer_dev_free
2432 struct usb_mixer_interface *mixer;
2433 struct snd_info_entry *entry;
2436 strcpy(chip->card->mixername, "USB Mixer");
2438 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
2442 mixer->ignore_ctl_error = ignore_error;
2443 mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems),
2445 if (!mixer->id_elems) {
2450 mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
2451 switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) {
2454 mixer->protocol = UAC_VERSION_1;
2457 mixer->protocol = UAC_VERSION_2;
2461 if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
2462 (err = snd_usb_mixer_status_create(mixer)) < 0)
2465 snd_usb_mixer_apply_create_quirk(mixer);
2467 err = snd_device_new(chip->card, SNDRV_DEV_CODEC, mixer, &dev_ops);
2471 if (list_empty(&chip->mixer_list) &&
2472 !snd_card_proc_new(chip->card, "usbmixer", &entry))
2473 snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read);
2475 list_add(&mixer->list, &chip->mixer_list);
2479 snd_usb_mixer_free(mixer);
2483 void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer)
2485 usb_kill_urb(mixer->urb);
2486 usb_kill_urb(mixer->rc_urb);
2490 /* stop any bus activity of a mixer */
2491 static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer)
2493 usb_kill_urb(mixer->urb);
2494 usb_kill_urb(mixer->rc_urb);
2497 static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer)
2502 err = usb_submit_urb(mixer->urb, GFP_NOIO);
2510 int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer)
2512 snd_usb_mixer_inactivate(mixer);
2516 static int restore_mixer_value(struct usb_mixer_elem_list *list)
2518 struct usb_mixer_elem_info *cval = (struct usb_mixer_elem_info *)list;
2523 for (c = 0; c < MAX_CHANNELS; c++) {
2524 if (!(cval->cmask & (1 << c)))
2526 if (cval->cached & (1 << c)) {
2527 err = snd_usb_set_cur_mix_value(cval, c + 1, idx,
2528 cval->cache_val[idx]);
2537 err = snd_usb_set_cur_mix_value(cval, 0, 0, *cval->cache_val);
2546 int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume)
2548 struct usb_mixer_elem_list *list;
2552 /* restore cached mixer values */
2553 for (id = 0; id < MAX_ID_ELEMS; id++) {
2554 for (list = mixer->id_elems[id]; list;
2555 list = list->next_id_elem) {
2557 err = list->resume(list);
2565 return snd_usb_mixer_activate(mixer);
2569 void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
2570 struct usb_mixer_interface *mixer,
2573 list->mixer = mixer;
2575 list->dump = snd_usb_mixer_dump_cval;
2577 list->resume = restore_mixer_value;