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
;
93 struct usb_audio_term
{
97 unsigned int chconfig
;
101 struct usbmix_name_map
;
104 struct snd_usb_audio
*chip
;
105 struct usb_mixer_interface
*mixer
;
106 unsigned char *buffer
;
108 DECLARE_BITMAP(unitbitmap
, 256);
109 struct usb_audio_term oterm
;
110 const struct usbmix_name_map
*map
;
111 const struct usbmix_selector_map
*selector_map
;
114 #define MAX_CHANNELS 10 /* max logical channels */
116 struct usb_mixer_elem_info
{
117 struct usb_mixer_interface
*mixer
;
118 struct usb_mixer_elem_info
*next_id_elem
; /* list of controls with same id */
119 struct snd_ctl_elem_id
*elem_id
;
121 unsigned int control
; /* CS or ICN (high byte) */
122 unsigned int cmask
; /* channel mask bitmap: 0 = master */
127 int cache_val
[MAX_CHANNELS
];
133 USB_FEATURE_NONE
= 0,
134 USB_FEATURE_MUTE
= 1,
142 USB_FEATURE_BASSBOOST
,
148 USB_MIXER_INV_BOOLEAN
,
157 USB_PROC_UPDOWN_SWITCH
= 1,
158 USB_PROC_UPDOWN_MODE_SEL
= 2,
160 USB_PROC_PROLOGIC
= 2,
161 USB_PROC_PROLOGIC_SWITCH
= 1,
162 USB_PROC_PROLOGIC_MODE_SEL
= 2,
165 USB_PROC_3DENH_SWITCH
= 1,
166 USB_PROC_3DENH_SPACE
= 2,
169 USB_PROC_REVERB_SWITCH
= 1,
170 USB_PROC_REVERB_LEVEL
= 2,
171 USB_PROC_REVERB_TIME
= 3,
172 USB_PROC_REVERB_DELAY
= 4,
175 USB_PROC_CHORUS_SWITCH
= 1,
176 USB_PROC_CHORUS_LEVEL
= 2,
177 USB_PROC_CHORUS_RATE
= 3,
178 USB_PROC_CHORUS_DEPTH
= 4,
181 USB_PROC_DCR_SWITCH
= 1,
182 USB_PROC_DCR_RATIO
= 2,
183 USB_PROC_DCR_MAX_AMP
= 3,
184 USB_PROC_DCR_THRESHOLD
= 4,
185 USB_PROC_DCR_ATTACK
= 5,
186 USB_PROC_DCR_RELEASE
= 6,
189 /*E-mu 0202(0404) eXtension Unit(XU) control*/
191 USB_XU_CLOCK_RATE
= 0xe301,
192 USB_XU_CLOCK_SOURCE
= 0xe302,
193 USB_XU_DIGITAL_IO_STATUS
= 0xe303,
194 USB_XU_DEVICE_OPTIONS
= 0xe304,
195 USB_XU_DIRECT_MONITORING
= 0xe305,
196 USB_XU_METERING
= 0xe306
199 USB_XU_CLOCK_SOURCE_SELECTOR
= 0x02, /* clock source*/
200 USB_XU_CLOCK_RATE_SELECTOR
= 0x03, /* clock rate */
201 USB_XU_DIGITAL_FORMAT_SELECTOR
= 0x01, /* the spdif format */
202 USB_XU_SOFT_LIMIT_SELECTOR
= 0x03 /* soft limiter */
206 * manual mapping of mixer names
207 * if the mixer topology is too complicated and the parsed names are
208 * ambiguous, add the entries in usbmixer_maps.c.
210 #include "usbmixer_maps.c"
212 /* get the mapped name if the unit matches */
213 static int check_mapped_name(struct mixer_build
*state
, int unitid
, int control
, char *buf
, int buflen
)
215 const struct usbmix_name_map
*p
;
220 for (p
= state
->map
; p
->id
; p
++) {
221 if (p
->id
== unitid
&& p
->name
&&
222 (! control
|| ! p
->control
|| control
== p
->control
)) {
224 return strlcpy(buf
, p
->name
, buflen
);
230 /* check whether the control should be ignored */
231 static int check_ignored_ctl(struct mixer_build
*state
, int unitid
, int control
)
233 const struct usbmix_name_map
*p
;
237 for (p
= state
->map
; p
->id
; p
++) {
238 if (p
->id
== unitid
&& ! p
->name
&&
239 (! control
|| ! p
->control
|| control
== p
->control
)) {
241 printk(KERN_DEBUG "ignored control %d:%d\n",
250 /* get the mapped selector source name */
251 static int check_mapped_selector_name(struct mixer_build
*state
, int unitid
,
252 int index
, char *buf
, int buflen
)
254 const struct usbmix_selector_map
*p
;
256 if (! state
->selector_map
)
258 for (p
= state
->selector_map
; p
->id
; p
++) {
259 if (p
->id
== unitid
&& index
< p
->count
)
260 return strlcpy(buf
, p
->names
[index
], buflen
);
266 * find an audio control unit with the given unit id
268 static void *find_audio_control_unit(struct mixer_build
*state
, unsigned char unit
)
273 while ((p
= snd_usb_find_desc(state
->buffer
, state
->buflen
, p
,
274 USB_DT_CS_INTERFACE
)) != NULL
) {
275 if (p
[0] >= 4 && p
[2] >= INPUT_TERMINAL
&& p
[2] <= EXTENSION_UNIT
&& p
[3] == unit
)
283 * copy a string with the given id
285 static int snd_usb_copy_string_desc(struct mixer_build
*state
, int index
, char *buf
, int maxlen
)
287 int len
= usb_string(state
->chip
->dev
, index
, buf
, maxlen
- 1);
293 * convert from the byte/word on usb descriptor to the zero-based integer
295 static int convert_signed_value(struct usb_mixer_elem_info
*cval
, int val
)
297 switch (cval
->val_type
) {
298 case USB_MIXER_BOOLEAN
:
300 case USB_MIXER_INV_BOOLEAN
:
323 * convert from the zero-based int to the byte/word for usb descriptor
325 static int convert_bytes_value(struct usb_mixer_elem_info
*cval
, int val
)
327 switch (cval
->val_type
) {
328 case USB_MIXER_BOOLEAN
:
330 case USB_MIXER_INV_BOOLEAN
:
339 return 0; /* not reached */
342 static int get_relative_value(struct usb_mixer_elem_info
*cval
, int val
)
348 else if (val
>= cval
->max
)
349 return (cval
->max
- cval
->min
+ cval
->res
- 1) / cval
->res
;
351 return (val
- cval
->min
) / cval
->res
;
354 static int get_abs_value(struct usb_mixer_elem_info
*cval
, int val
)
369 * retrieve a mixer value
372 static int get_ctl_value(struct usb_mixer_elem_info
*cval
, int request
, int validx
, int *value_ret
)
374 unsigned char buf
[2];
375 int val_len
= cval
->val_type
>= USB_MIXER_S16
? 2 : 1;
378 while (timeout
-- > 0) {
379 if (snd_usb_ctl_msg(cval
->mixer
->chip
->dev
,
380 usb_rcvctrlpipe(cval
->mixer
->chip
->dev
, 0),
382 USB_RECIP_INTERFACE
| USB_TYPE_CLASS
| USB_DIR_IN
,
383 validx
, cval
->mixer
->ctrlif
| (cval
->id
<< 8),
384 buf
, val_len
, 100) >= val_len
) {
385 *value_ret
= convert_signed_value(cval
, snd_usb_combine_bytes(buf
, val_len
));
389 snd_printdd(KERN_ERR
"cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
390 request
, validx
, cval
->mixer
->ctrlif
| (cval
->id
<< 8), cval
->val_type
);
394 static int get_cur_ctl_value(struct usb_mixer_elem_info
*cval
, int validx
, int *value
)
396 return get_ctl_value(cval
, GET_CUR
, validx
, value
);
399 /* channel = 0: master, 1 = first channel */
400 static inline int get_cur_mix_raw(struct usb_mixer_elem_info
*cval
,
401 int channel
, int *value
)
403 return get_ctl_value(cval
, GET_CUR
, (cval
->control
<< 8) | channel
, value
);
406 static int get_cur_mix_value(struct usb_mixer_elem_info
*cval
,
407 int channel
, int index
, int *value
)
411 if (cval
->cached
& (1 << channel
)) {
412 *value
= cval
->cache_val
[index
];
415 err
= get_cur_mix_raw(cval
, channel
, value
);
417 if (!cval
->mixer
->ignore_ctl_error
)
418 snd_printd(KERN_ERR
"cannot get current value for "
419 "control %d ch %d: err = %d\n",
420 cval
->control
, channel
, err
);
423 cval
->cached
|= 1 << channel
;
424 cval
->cache_val
[index
] = *value
;
433 static int set_ctl_value(struct usb_mixer_elem_info
*cval
, int request
, int validx
, int value_set
)
435 unsigned char buf
[2];
436 int val_len
= cval
->val_type
>= USB_MIXER_S16
? 2 : 1;
439 value_set
= convert_bytes_value(cval
, value_set
);
440 buf
[0] = value_set
& 0xff;
441 buf
[1] = (value_set
>> 8) & 0xff;
442 while (timeout
-- > 0)
443 if (snd_usb_ctl_msg(cval
->mixer
->chip
->dev
,
444 usb_sndctrlpipe(cval
->mixer
->chip
->dev
, 0),
446 USB_RECIP_INTERFACE
| USB_TYPE_CLASS
| USB_DIR_OUT
,
447 validx
, cval
->mixer
->ctrlif
| (cval
->id
<< 8),
448 buf
, val_len
, 100) >= 0)
450 snd_printdd(KERN_ERR
"cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
451 request
, validx
, cval
->mixer
->ctrlif
| (cval
->id
<< 8), cval
->val_type
, buf
[0], buf
[1]);
455 static int set_cur_ctl_value(struct usb_mixer_elem_info
*cval
, int validx
, int value
)
457 return set_ctl_value(cval
, SET_CUR
, validx
, value
);
460 static int set_cur_mix_value(struct usb_mixer_elem_info
*cval
, int channel
,
461 int index
, int value
)
464 err
= set_ctl_value(cval
, SET_CUR
, (cval
->control
<< 8) | channel
,
468 cval
->cached
|= 1 << channel
;
469 cval
->cache_val
[index
] = value
;
474 * TLV callback for mixer volume controls
476 static int mixer_vol_tlv(struct snd_kcontrol
*kcontrol
, int op_flag
,
477 unsigned int size
, unsigned int __user
*_tlv
)
479 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
480 DECLARE_TLV_DB_MINMAX(scale
, 0, 0);
482 if (size
< sizeof(scale
))
484 /* USB descriptions contain the dB scale in 1/256 dB unit
485 * while ALSA TLV contains in 1/100 dB unit
487 scale
[2] = (convert_signed_value(cval
, cval
->min
) * 100) / 256;
488 scale
[3] = (convert_signed_value(cval
, cval
->max
) * 100) / 256;
489 if (scale
[3] <= scale
[2]) {
490 /* something is wrong; assume it's either from/to 0dB */
493 else if (scale
[2] > 0)
495 else /* totally crap, return an error */
498 if (copy_to_user(_tlv
, scale
, sizeof(scale
)))
504 * parser routines begin here...
507 static int parse_audio_unit(struct mixer_build
*state
, int unitid
);
511 * check if the input/output channel routing is enabled on the given bitmap.
512 * used for mixer unit parser
514 static int check_matrix_bitmap(unsigned char *bmap
, int ich
, int och
, int num_outs
)
516 int idx
= ich
* num_outs
+ och
;
517 return bmap
[idx
>> 3] & (0x80 >> (idx
& 7));
522 * add an alsa control element
523 * search and increment the index until an empty slot is found.
525 * if failed, give up and free the control instance.
528 static int add_control_to_empty(struct mixer_build
*state
, struct snd_kcontrol
*kctl
)
530 struct usb_mixer_elem_info
*cval
= kctl
->private_data
;
533 while (snd_ctl_find_id(state
->chip
->card
, &kctl
->id
))
535 if ((err
= snd_ctl_add(state
->chip
->card
, kctl
)) < 0) {
536 snd_printd(KERN_ERR
"cannot add control (err = %d)\n", err
);
539 cval
->elem_id
= &kctl
->id
;
540 cval
->next_id_elem
= state
->mixer
->id_elems
[cval
->id
];
541 state
->mixer
->id_elems
[cval
->id
] = cval
;
547 * get a terminal name string
550 static struct iterm_name_combo
{
554 { 0x0300, "Output" },
555 { 0x0301, "Speaker" },
556 { 0x0302, "Headphone" },
557 { 0x0303, "HMD Audio" },
558 { 0x0304, "Desktop Speaker" },
559 { 0x0305, "Room Speaker" },
560 { 0x0306, "Com Speaker" },
562 { 0x0600, "External In" },
563 { 0x0601, "Analog In" },
564 { 0x0602, "Digital In" },
566 { 0x0604, "Legacy In" },
567 { 0x0605, "IEC958 In" },
568 { 0x0606, "1394 DA Stream" },
569 { 0x0607, "1394 DV Stream" },
570 { 0x0700, "Embedded" },
571 { 0x0701, "Noise Source" },
572 { 0x0702, "Equalization Noise" },
576 { 0x0706, "MiniDisk" },
577 { 0x0707, "Analog Tape" },
578 { 0x0708, "Phonograph" },
579 { 0x0709, "VCR Audio" },
580 { 0x070a, "Video Disk Audio" },
581 { 0x070b, "DVD Audio" },
582 { 0x070c, "TV Tuner Audio" },
583 { 0x070d, "Satellite Rec Audio" },
584 { 0x070e, "Cable Tuner Audio" },
585 { 0x070f, "DSS Audio" },
586 { 0x0710, "Radio Receiver" },
587 { 0x0711, "Radio Transmitter" },
588 { 0x0712, "Multi-Track Recorder" },
589 { 0x0713, "Synthesizer" },
593 static int get_term_name(struct mixer_build
*state
, struct usb_audio_term
*iterm
,
594 unsigned char *name
, int maxlen
, int term_only
)
596 struct iterm_name_combo
*names
;
599 return snd_usb_copy_string_desc(state
, iterm
->name
, name
, maxlen
);
601 /* virtual type - not a real terminal */
602 if (iterm
->type
>> 16) {
605 switch (iterm
->type
>> 16) {
607 strcpy(name
, "Selector"); return 8;
608 case PROCESSING_UNIT
:
609 strcpy(name
, "Process Unit"); return 12;
611 strcpy(name
, "Ext Unit"); return 8;
613 strcpy(name
, "Mixer"); return 5;
615 return sprintf(name
, "Unit %d", iterm
->id
);
619 switch (iterm
->type
& 0xff00) {
621 strcpy(name
, "PCM"); return 3;
623 strcpy(name
, "Mic"); return 3;
625 strcpy(name
, "Headset"); return 7;
627 strcpy(name
, "Phone"); return 5;
630 for (names
= iterm_names
; names
->type
; names
++)
631 if (names
->type
== iterm
->type
) {
632 strcpy(name
, names
->name
);
633 return strlen(names
->name
);
640 * parse the source unit recursively until it reaches to a terminal
641 * or a branched unit.
643 static int check_input_term(struct mixer_build
*state
, int id
, struct usb_audio_term
*term
)
647 memset(term
, 0, sizeof(*term
));
648 while ((p1
= find_audio_control_unit(state
, id
)) != NULL
) {
652 term
->type
= combine_word(p1
+ 4);
653 term
->channels
= p1
[7];
654 term
->chconfig
= combine_word(p1
+ 8);
659 break; /* continue to parse */
661 term
->type
= p1
[2] << 16; /* virtual type */
662 term
->channels
= p1
[5 + p1
[4]];
663 term
->chconfig
= combine_word(p1
+ 6 + p1
[4]);
664 term
->name
= p1
[p1
[0] - 1];
667 /* call recursively to retrieve the channel info */
668 if (check_input_term(state
, p1
[5], term
) < 0)
670 term
->type
= p1
[2] << 16; /* virtual type */
672 term
->name
= p1
[9 + p1
[0] - 1];
674 case PROCESSING_UNIT
:
678 break; /* continue to parse */
680 term
->type
= p1
[2] << 16; /* virtual type */
681 term
->channels
= p1
[7 + p1
[6]];
682 term
->chconfig
= combine_word(p1
+ 8 + p1
[6]);
683 term
->name
= p1
[12 + p1
[6] + p1
[11 + p1
[6]]];
697 /* feature unit control information */
698 struct usb_feature_control_info
{
700 unsigned int type
; /* control type (mute, volume, etc.) */
703 static struct usb_feature_control_info audio_feature_info
[] = {
704 { "Mute", USB_MIXER_INV_BOOLEAN
},
705 { "Volume", USB_MIXER_S16
},
706 { "Tone Control - Bass", USB_MIXER_S8
},
707 { "Tone Control - Mid", USB_MIXER_S8
},
708 { "Tone Control - Treble", USB_MIXER_S8
},
709 { "Graphic Equalizer", USB_MIXER_S8
}, /* FIXME: not implemeted yet */
710 { "Auto Gain Control", USB_MIXER_BOOLEAN
},
711 { "Delay Control", USB_MIXER_U16
},
712 { "Bass Boost", USB_MIXER_BOOLEAN
},
713 { "Loudness", USB_MIXER_BOOLEAN
},
717 /* private_free callback */
718 static void usb_mixer_elem_free(struct snd_kcontrol
*kctl
)
720 kfree(kctl
->private_data
);
721 kctl
->private_data
= NULL
;
726 * interface to ALSA control for feature/mixer units
730 * retrieve the minimum and maximum values for the specified control
732 static int get_min_max(struct usb_mixer_elem_info
*cval
, int default_min
)
735 cval
->min
= default_min
;
736 cval
->max
= cval
->min
+ 1;
739 if (cval
->val_type
== USB_MIXER_BOOLEAN
||
740 cval
->val_type
== USB_MIXER_INV_BOOLEAN
) {
741 cval
->initialized
= 1;
746 for (i
= 0; i
< MAX_CHANNELS
; i
++)
747 if (cval
->cmask
& (1 << i
)) {
752 if (get_ctl_value(cval
, GET_MAX
, (cval
->control
<< 8) | minchn
, &cval
->max
) < 0 ||
753 get_ctl_value(cval
, GET_MIN
, (cval
->control
<< 8) | minchn
, &cval
->min
) < 0) {
754 snd_printd(KERN_ERR
"%d:%d: cannot get min/max values for control %d (id %d)\n",
755 cval
->id
, cval
->mixer
->ctrlif
, cval
->control
, cval
->id
);
758 if (get_ctl_value(cval
, GET_RES
, (cval
->control
<< 8) | minchn
, &cval
->res
) < 0) {
761 int last_valid_res
= cval
->res
;
763 while (cval
->res
> 1) {
764 if (set_ctl_value(cval
, SET_RES
, (cval
->control
<< 8) | minchn
, cval
->res
/ 2) < 0)
768 if (get_ctl_value(cval
, GET_RES
, (cval
->control
<< 8) | minchn
, &cval
->res
) < 0)
769 cval
->res
= last_valid_res
;
774 /* Additional checks for the proper resolution
776 * Some devices report smaller resolutions than actually
777 * reacting. They don't return errors but simply clip
778 * to the lower aligned value.
780 if (cval
->min
+ cval
->res
< cval
->max
) {
781 int last_valid_res
= cval
->res
;
782 int saved
, test
, check
;
783 get_cur_mix_raw(cval
, minchn
, &saved
);
786 if (test
< cval
->max
)
790 if (test
< cval
->min
|| test
> cval
->max
||
791 set_cur_mix_value(cval
, minchn
, 0, test
) ||
792 get_cur_mix_raw(cval
, minchn
, &check
)) {
793 cval
->res
= last_valid_res
;
800 set_cur_mix_value(cval
, minchn
, 0, saved
);
803 cval
->initialized
= 1;
809 /* get a feature/mixer unit info */
810 static int mixer_ctl_feature_info(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_info
*uinfo
)
812 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
814 if (cval
->val_type
== USB_MIXER_BOOLEAN
||
815 cval
->val_type
== USB_MIXER_INV_BOOLEAN
)
816 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
818 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
819 uinfo
->count
= cval
->channels
;
820 if (cval
->val_type
== USB_MIXER_BOOLEAN
||
821 cval
->val_type
== USB_MIXER_INV_BOOLEAN
) {
822 uinfo
->value
.integer
.min
= 0;
823 uinfo
->value
.integer
.max
= 1;
825 if (! cval
->initialized
)
826 get_min_max(cval
, 0);
827 uinfo
->value
.integer
.min
= 0;
828 uinfo
->value
.integer
.max
=
829 (cval
->max
- cval
->min
+ cval
->res
- 1) / cval
->res
;
834 /* get the current value from feature/mixer unit */
835 static int mixer_ctl_feature_get(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
837 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
838 int c
, cnt
, val
, err
;
840 ucontrol
->value
.integer
.value
[0] = cval
->min
;
843 for (c
= 0; c
< MAX_CHANNELS
; c
++) {
844 if (!(cval
->cmask
& (1 << c
)))
846 err
= get_cur_mix_value(cval
, c
+ 1, cnt
, &val
);
848 return cval
->mixer
->ignore_ctl_error
? 0 : err
;
849 val
= get_relative_value(cval
, val
);
850 ucontrol
->value
.integer
.value
[cnt
] = val
;
856 err
= get_cur_mix_value(cval
, 0, 0, &val
);
858 return cval
->mixer
->ignore_ctl_error
? 0 : err
;
859 val
= get_relative_value(cval
, val
);
860 ucontrol
->value
.integer
.value
[0] = val
;
865 /* put the current value to feature/mixer unit */
866 static int mixer_ctl_feature_put(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
868 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
869 int c
, cnt
, val
, oval
, err
;
874 for (c
= 0; c
< MAX_CHANNELS
; c
++) {
875 if (!(cval
->cmask
& (1 << c
)))
877 err
= get_cur_mix_value(cval
, c
+ 1, cnt
, &oval
);
879 return cval
->mixer
->ignore_ctl_error
? 0 : err
;
880 val
= ucontrol
->value
.integer
.value
[cnt
];
881 val
= get_abs_value(cval
, val
);
883 set_cur_mix_value(cval
, c
+ 1, cnt
, val
);
890 err
= get_cur_mix_value(cval
, 0, 0, &oval
);
892 return cval
->mixer
->ignore_ctl_error
? 0 : err
;
893 val
= ucontrol
->value
.integer
.value
[0];
894 val
= get_abs_value(cval
, val
);
896 set_cur_mix_value(cval
, 0, 0, val
);
903 static struct snd_kcontrol_new usb_feature_unit_ctl
= {
904 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
905 .name
= "", /* will be filled later manually */
906 .info
= mixer_ctl_feature_info
,
907 .get
= mixer_ctl_feature_get
,
908 .put
= mixer_ctl_feature_put
,
913 * build a feature control
916 static size_t append_ctl_name(struct snd_kcontrol
*kctl
, const char *str
)
918 return strlcat(kctl
->id
.name
, str
, sizeof(kctl
->id
.name
));
921 static void build_feature_ctl(struct mixer_build
*state
, unsigned char *desc
,
922 unsigned int ctl_mask
, int control
,
923 struct usb_audio_term
*iterm
, int unitid
)
925 unsigned int len
= 0;
927 int nameid
= desc
[desc
[0] - 1];
928 struct snd_kcontrol
*kctl
;
929 struct usb_mixer_elem_info
*cval
;
931 control
++; /* change from zero-based to 1-based value */
933 if (control
== USB_FEATURE_GEQ
) {
934 /* FIXME: not supported yet */
938 if (check_ignored_ctl(state
, unitid
, control
))
941 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
943 snd_printk(KERN_ERR
"cannot malloc kcontrol\n");
946 cval
->mixer
= state
->mixer
;
948 cval
->control
= control
;
949 cval
->cmask
= ctl_mask
;
950 cval
->val_type
= audio_feature_info
[control
-1].type
;
952 cval
->channels
= 1; /* master channel */
955 for (i
= 0; i
< 16; i
++)
956 if (ctl_mask
& (1 << i
))
961 /* get min/max values */
962 get_min_max(cval
, 0);
964 kctl
= snd_ctl_new1(&usb_feature_unit_ctl
, cval
);
966 snd_printk(KERN_ERR
"cannot malloc kcontrol\n");
970 kctl
->private_free
= usb_mixer_elem_free
;
972 len
= check_mapped_name(state
, unitid
, control
, kctl
->id
.name
, sizeof(kctl
->id
.name
));
973 mapped_name
= len
!= 0;
975 len
= snd_usb_copy_string_desc(state
, nameid
, kctl
->id
.name
, sizeof(kctl
->id
.name
));
978 case USB_FEATURE_MUTE
:
979 case USB_FEATURE_VOLUME
:
980 /* determine the control name. the rule is:
981 * - if a name id is given in descriptor, use it.
982 * - if the connected input can be determined, then use the name
984 * - if the connected output can be determined, use it.
985 * - otherwise, anonymous name.
988 len
= get_term_name(state
, iterm
, kctl
->id
.name
, sizeof(kctl
->id
.name
), 1);
990 len
= get_term_name(state
, &state
->oterm
, kctl
->id
.name
, sizeof(kctl
->id
.name
), 1);
992 len
= snprintf(kctl
->id
.name
, sizeof(kctl
->id
.name
),
993 "Feature %d", unitid
);
995 /* determine the stream direction:
996 * if the connected output is USB stream, then it's likely a
997 * capture stream. otherwise it should be playback (hopefully :)
999 if (! mapped_name
&& ! (state
->oterm
.type
>> 16)) {
1000 if ((state
->oterm
.type
& 0xff00) == 0x0100) {
1001 len
= append_ctl_name(kctl
, " Capture");
1003 len
= append_ctl_name(kctl
, " Playback");
1006 append_ctl_name(kctl
, control
== USB_FEATURE_MUTE
?
1007 " Switch" : " Volume");
1008 if (control
== USB_FEATURE_VOLUME
) {
1009 kctl
->tlv
.c
= mixer_vol_tlv
;
1010 kctl
->vd
[0].access
|=
1011 SNDRV_CTL_ELEM_ACCESS_TLV_READ
|
1012 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK
;
1018 strlcpy(kctl
->id
.name
, audio_feature_info
[control
-1].name
,
1019 sizeof(kctl
->id
.name
));
1023 /* volume control quirks */
1024 switch (state
->chip
->usb_id
) {
1025 case USB_ID(0x0471, 0x0101):
1026 case USB_ID(0x0471, 0x0104):
1027 case USB_ID(0x0471, 0x0105):
1028 case USB_ID(0x0672, 0x1041):
1029 /* quirk for UDA1321/N101.
1030 * note that detection between firmware 2.1.1.7 (N101)
1031 * and later 2.1.1.21 is not very clear from datasheets.
1032 * I hope that the min value is -15360 for newer firmware --jk
1034 if (!strcmp(kctl
->id
.name
, "PCM Playback Volume") &&
1035 cval
->min
== -15616) {
1036 snd_printk(KERN_INFO
1037 "set volume quirk for UDA1321/N101 chip\n");
1042 case USB_ID(0x046d, 0x09a4):
1043 if (!strcmp(kctl
->id
.name
, "Mic Capture Volume")) {
1044 snd_printk(KERN_INFO
1045 "set volume quirk for QuickCam E3500\n");
1054 snd_printdd(KERN_INFO
"[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1055 cval
->id
, kctl
->id
.name
, cval
->channels
, cval
->min
, cval
->max
, cval
->res
);
1056 add_control_to_empty(state
, kctl
);
1062 * parse a feature unit
1064 * most of controlls are defined here.
1066 static int parse_audio_feature_unit(struct mixer_build
*state
, int unitid
, unsigned char *ftr
)
1069 struct usb_audio_term iterm
;
1070 unsigned int master_bits
, first_ch_bits
;
1073 if (ftr
[0] < 7 || ! (csize
= ftr
[5]) || ftr
[0] < 7 + csize
) {
1074 snd_printk(KERN_ERR
"usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid
);
1078 /* parse the source unit */
1079 if ((err
= parse_audio_unit(state
, ftr
[4])) < 0)
1082 /* determine the input source type and name */
1083 if (check_input_term(state
, ftr
[4], &iterm
) < 0)
1086 channels
= (ftr
[0] - 7) / csize
- 1;
1088 master_bits
= snd_usb_combine_bytes(ftr
+ 6, csize
);
1089 /* master configuration quirks */
1090 switch (state
->chip
->usb_id
) {
1091 case USB_ID(0x08bb, 0x2702):
1092 snd_printk(KERN_INFO
1093 "usbmixer: master volume quirk for PCM2702 chip\n");
1094 /* disable non-functional volume control */
1095 master_bits
&= ~(1 << (USB_FEATURE_VOLUME
- 1));
1099 first_ch_bits
= snd_usb_combine_bytes(ftr
+ 6 + csize
, csize
);
1102 /* check all control types */
1103 for (i
= 0; i
< 10; i
++) {
1104 unsigned int ch_bits
= 0;
1105 for (j
= 0; j
< channels
; j
++) {
1106 unsigned int mask
= snd_usb_combine_bytes(ftr
+ 6 + csize
* (j
+1), csize
);
1107 if (mask
& (1 << i
))
1108 ch_bits
|= (1 << j
);
1110 if (ch_bits
& 1) /* the first channel must be set (for ease of programming) */
1111 build_feature_ctl(state
, ftr
, ch_bits
, i
, &iterm
, unitid
);
1112 if (master_bits
& (1 << i
))
1113 build_feature_ctl(state
, ftr
, 0, i
, &iterm
, unitid
);
1125 * build a mixer unit control
1127 * the callbacks are identical with feature unit.
1128 * input channel number (zero based) is given in control field instead.
1131 static void build_mixer_unit_ctl(struct mixer_build
*state
, unsigned char *desc
,
1132 int in_pin
, int in_ch
, int unitid
,
1133 struct usb_audio_term
*iterm
)
1135 struct usb_mixer_elem_info
*cval
;
1136 unsigned int input_pins
= desc
[4];
1137 unsigned int num_outs
= desc
[5 + input_pins
];
1138 unsigned int i
, len
;
1139 struct snd_kcontrol
*kctl
;
1141 if (check_ignored_ctl(state
, unitid
, 0))
1144 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
1148 cval
->mixer
= state
->mixer
;
1150 cval
->control
= in_ch
+ 1; /* based on 1 */
1151 cval
->val_type
= USB_MIXER_S16
;
1152 for (i
= 0; i
< num_outs
; i
++) {
1153 if (check_matrix_bitmap(desc
+ 9 + input_pins
, in_ch
, i
, num_outs
)) {
1154 cval
->cmask
|= (1 << i
);
1159 /* get min/max values */
1160 get_min_max(cval
, 0);
1162 kctl
= snd_ctl_new1(&usb_feature_unit_ctl
, cval
);
1164 snd_printk(KERN_ERR
"cannot malloc kcontrol\n");
1168 kctl
->private_free
= usb_mixer_elem_free
;
1170 len
= check_mapped_name(state
, unitid
, 0, kctl
->id
.name
, sizeof(kctl
->id
.name
));
1172 len
= get_term_name(state
, iterm
, kctl
->id
.name
, sizeof(kctl
->id
.name
), 0);
1174 len
= sprintf(kctl
->id
.name
, "Mixer Source %d", in_ch
+ 1);
1175 append_ctl_name(kctl
, " Volume");
1177 snd_printdd(KERN_INFO
"[%d] MU [%s] ch = %d, val = %d/%d\n",
1178 cval
->id
, kctl
->id
.name
, cval
->channels
, cval
->min
, cval
->max
);
1179 add_control_to_empty(state
, kctl
);
1184 * parse a mixer unit
1186 static int parse_audio_mixer_unit(struct mixer_build
*state
, int unitid
, unsigned char *desc
)
1188 struct usb_audio_term iterm
;
1189 int input_pins
, num_ins
, num_outs
;
1192 if (desc
[0] < 11 || ! (input_pins
= desc
[4]) || ! (num_outs
= desc
[5 + input_pins
])) {
1193 snd_printk(KERN_ERR
"invalid MIXER UNIT descriptor %d\n", unitid
);
1196 /* no bmControls field (e.g. Maya44) -> ignore */
1197 if (desc
[0] <= 10 + input_pins
) {
1198 snd_printdd(KERN_INFO
"MU %d has no bmControls field\n", unitid
);
1204 for (pin
= 0; pin
< input_pins
; pin
++) {
1205 err
= parse_audio_unit(state
, desc
[5 + pin
]);
1208 err
= check_input_term(state
, desc
[5 + pin
], &iterm
);
1211 num_ins
+= iterm
.channels
;
1212 for (; ich
< num_ins
; ++ich
) {
1213 int och
, ich_has_controls
= 0;
1215 for (och
= 0; och
< num_outs
; ++och
) {
1216 if (check_matrix_bitmap(desc
+ 9 + input_pins
,
1217 ich
, och
, num_outs
)) {
1218 ich_has_controls
= 1;
1222 if (ich_has_controls
)
1223 build_mixer_unit_ctl(state
, desc
, pin
, ich
,
1232 * Processing Unit / Extension Unit
1235 /* get callback for processing/extension unit */
1236 static int mixer_ctl_procunit_get(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
1238 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1241 err
= get_cur_ctl_value(cval
, cval
->control
<< 8, &val
);
1242 if (err
< 0 && cval
->mixer
->ignore_ctl_error
) {
1243 ucontrol
->value
.integer
.value
[0] = cval
->min
;
1248 val
= get_relative_value(cval
, val
);
1249 ucontrol
->value
.integer
.value
[0] = val
;
1253 /* put callback for processing/extension unit */
1254 static int mixer_ctl_procunit_put(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
1256 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1259 err
= get_cur_ctl_value(cval
, cval
->control
<< 8, &oval
);
1261 if (cval
->mixer
->ignore_ctl_error
)
1265 val
= ucontrol
->value
.integer
.value
[0];
1266 val
= get_abs_value(cval
, val
);
1268 set_cur_ctl_value(cval
, cval
->control
<< 8, val
);
1274 /* alsa control interface for processing/extension unit */
1275 static struct snd_kcontrol_new mixer_procunit_ctl
= {
1276 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
1277 .name
= "", /* will be filled later */
1278 .info
= mixer_ctl_feature_info
,
1279 .get
= mixer_ctl_procunit_get
,
1280 .put
= mixer_ctl_procunit_put
,
1285 * predefined data for processing units
1287 struct procunit_value_info
{
1294 struct procunit_info
{
1297 struct procunit_value_info
*values
;
1300 static struct procunit_value_info updown_proc_info
[] = {
1301 { USB_PROC_UPDOWN_SWITCH
, "Switch", USB_MIXER_BOOLEAN
},
1302 { USB_PROC_UPDOWN_MODE_SEL
, "Mode Select", USB_MIXER_U8
, 1 },
1305 static struct procunit_value_info prologic_proc_info
[] = {
1306 { USB_PROC_PROLOGIC_SWITCH
, "Switch", USB_MIXER_BOOLEAN
},
1307 { USB_PROC_PROLOGIC_MODE_SEL
, "Mode Select", USB_MIXER_U8
, 1 },
1310 static struct procunit_value_info threed_enh_proc_info
[] = {
1311 { USB_PROC_3DENH_SWITCH
, "Switch", USB_MIXER_BOOLEAN
},
1312 { USB_PROC_3DENH_SPACE
, "Spaciousness", USB_MIXER_U8
},
1315 static struct procunit_value_info reverb_proc_info
[] = {
1316 { USB_PROC_REVERB_SWITCH
, "Switch", USB_MIXER_BOOLEAN
},
1317 { USB_PROC_REVERB_LEVEL
, "Level", USB_MIXER_U8
},
1318 { USB_PROC_REVERB_TIME
, "Time", USB_MIXER_U16
},
1319 { USB_PROC_REVERB_DELAY
, "Delay", USB_MIXER_U8
},
1322 static struct procunit_value_info chorus_proc_info
[] = {
1323 { USB_PROC_CHORUS_SWITCH
, "Switch", USB_MIXER_BOOLEAN
},
1324 { USB_PROC_CHORUS_LEVEL
, "Level", USB_MIXER_U8
},
1325 { USB_PROC_CHORUS_RATE
, "Rate", USB_MIXER_U16
},
1326 { USB_PROC_CHORUS_DEPTH
, "Depth", USB_MIXER_U16
},
1329 static struct procunit_value_info dcr_proc_info
[] = {
1330 { USB_PROC_DCR_SWITCH
, "Switch", USB_MIXER_BOOLEAN
},
1331 { USB_PROC_DCR_RATIO
, "Ratio", USB_MIXER_U16
},
1332 { USB_PROC_DCR_MAX_AMP
, "Max Amp", USB_MIXER_S16
},
1333 { USB_PROC_DCR_THRESHOLD
, "Threshold", USB_MIXER_S16
},
1334 { USB_PROC_DCR_ATTACK
, "Attack Time", USB_MIXER_U16
},
1335 { USB_PROC_DCR_RELEASE
, "Release Time", USB_MIXER_U16
},
1339 static struct procunit_info procunits
[] = {
1340 { USB_PROC_UPDOWN
, "Up Down", updown_proc_info
},
1341 { USB_PROC_PROLOGIC
, "Dolby Prologic", prologic_proc_info
},
1342 { USB_PROC_3DENH
, "3D Stereo Extender", threed_enh_proc_info
},
1343 { USB_PROC_REVERB
, "Reverb", reverb_proc_info
},
1344 { USB_PROC_CHORUS
, "Chorus", chorus_proc_info
},
1345 { USB_PROC_DCR
, "DCR", dcr_proc_info
},
1349 * predefined data for extension units
1351 static struct procunit_value_info clock_rate_xu_info
[] = {
1352 { USB_XU_CLOCK_RATE_SELECTOR
, "Selector", USB_MIXER_U8
, 0 },
1355 static struct procunit_value_info clock_source_xu_info
[] = {
1356 { USB_XU_CLOCK_SOURCE_SELECTOR
, "External", USB_MIXER_BOOLEAN
},
1359 static struct procunit_value_info spdif_format_xu_info
[] = {
1360 { USB_XU_DIGITAL_FORMAT_SELECTOR
, "SPDIF/AC3", USB_MIXER_BOOLEAN
},
1363 static struct procunit_value_info soft_limit_xu_info
[] = {
1364 { USB_XU_SOFT_LIMIT_SELECTOR
, " ", USB_MIXER_BOOLEAN
},
1367 static struct procunit_info extunits
[] = {
1368 { USB_XU_CLOCK_RATE
, "Clock rate", clock_rate_xu_info
},
1369 { USB_XU_CLOCK_SOURCE
, "DigitalIn CLK source", clock_source_xu_info
},
1370 { USB_XU_DIGITAL_IO_STATUS
, "DigitalOut format:", spdif_format_xu_info
},
1371 { USB_XU_DEVICE_OPTIONS
, "AnalogueIn Soft Limit", soft_limit_xu_info
},
1375 * build a processing/extension unit
1377 static int build_audio_procunit(struct mixer_build
*state
, int unitid
, unsigned char *dsc
, struct procunit_info
*list
, char *name
)
1379 int num_ins
= dsc
[6];
1380 struct usb_mixer_elem_info
*cval
;
1381 struct snd_kcontrol
*kctl
;
1382 int i
, err
, nameid
, type
, len
;
1383 struct procunit_info
*info
;
1384 struct procunit_value_info
*valinfo
;
1385 static struct procunit_value_info default_value_info
[] = {
1386 { 0x01, "Switch", USB_MIXER_BOOLEAN
},
1389 static struct procunit_info default_info
= {
1390 0, NULL
, default_value_info
1393 if (dsc
[0] < 13 || dsc
[0] < 13 + num_ins
|| dsc
[0] < num_ins
+ dsc
[11 + num_ins
]) {
1394 snd_printk(KERN_ERR
"invalid %s descriptor (id %d)\n", name
, unitid
);
1398 for (i
= 0; i
< num_ins
; i
++) {
1399 if ((err
= parse_audio_unit(state
, dsc
[7 + i
])) < 0)
1403 type
= combine_word(&dsc
[4]);
1404 for (info
= list
; info
&& info
->type
; info
++)
1405 if (info
->type
== type
)
1407 if (! info
|| ! info
->type
)
1408 info
= &default_info
;
1410 for (valinfo
= info
->values
; valinfo
->control
; valinfo
++) {
1411 /* FIXME: bitmap might be longer than 8bit */
1412 if (! (dsc
[12 + num_ins
] & (1 << (valinfo
->control
- 1))))
1414 if (check_ignored_ctl(state
, unitid
, valinfo
->control
))
1416 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
1418 snd_printk(KERN_ERR
"cannot malloc kcontrol\n");
1421 cval
->mixer
= state
->mixer
;
1423 cval
->control
= valinfo
->control
;
1424 cval
->val_type
= valinfo
->val_type
;
1427 /* get min/max values */
1428 if (type
== USB_PROC_UPDOWN
&& cval
->control
== USB_PROC_UPDOWN_MODE_SEL
) {
1429 /* FIXME: hard-coded */
1431 cval
->max
= dsc
[15];
1433 cval
->initialized
= 1;
1435 if (type
== USB_XU_CLOCK_RATE
) {
1436 /* E-Mu USB 0404/0202/TrackerPre
1437 * samplerate control quirk
1442 cval
->initialized
= 1;
1444 get_min_max(cval
, valinfo
->min_value
);
1447 kctl
= snd_ctl_new1(&mixer_procunit_ctl
, cval
);
1449 snd_printk(KERN_ERR
"cannot malloc kcontrol\n");
1453 kctl
->private_free
= usb_mixer_elem_free
;
1455 if (check_mapped_name(state
, unitid
, cval
->control
, kctl
->id
.name
, sizeof(kctl
->id
.name
)))
1457 else if (info
->name
)
1458 strlcpy(kctl
->id
.name
, info
->name
, sizeof(kctl
->id
.name
));
1460 nameid
= dsc
[12 + num_ins
+ dsc
[11 + num_ins
]];
1463 len
= snd_usb_copy_string_desc(state
, nameid
, kctl
->id
.name
, sizeof(kctl
->id
.name
));
1465 strlcpy(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
));
1467 append_ctl_name(kctl
, " ");
1468 append_ctl_name(kctl
, valinfo
->suffix
);
1470 snd_printdd(KERN_INFO
"[%d] PU [%s] ch = %d, val = %d/%d\n",
1471 cval
->id
, kctl
->id
.name
, cval
->channels
, cval
->min
, cval
->max
);
1472 if ((err
= add_control_to_empty(state
, kctl
)) < 0)
1479 static int parse_audio_processing_unit(struct mixer_build
*state
, int unitid
, unsigned char *desc
)
1481 return build_audio_procunit(state
, unitid
, desc
, procunits
, "Processing Unit");
1484 static int parse_audio_extension_unit(struct mixer_build
*state
, int unitid
, unsigned char *desc
)
1486 return build_audio_procunit(state
, unitid
, desc
, extunits
, "Extension Unit");
1494 /* info callback for selector unit
1495 * use an enumerator type for routing
1497 static int mixer_ctl_selector_info(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_info
*uinfo
)
1499 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1500 char **itemlist
= (char **)kcontrol
->private_value
;
1502 if (snd_BUG_ON(!itemlist
))
1504 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
1506 uinfo
->value
.enumerated
.items
= cval
->max
;
1507 if ((int)uinfo
->value
.enumerated
.item
>= cval
->max
)
1508 uinfo
->value
.enumerated
.item
= cval
->max
- 1;
1509 strcpy(uinfo
->value
.enumerated
.name
, itemlist
[uinfo
->value
.enumerated
.item
]);
1513 /* get callback for selector unit */
1514 static int mixer_ctl_selector_get(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
1516 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1519 err
= get_cur_ctl_value(cval
, 0, &val
);
1521 if (cval
->mixer
->ignore_ctl_error
) {
1522 ucontrol
->value
.enumerated
.item
[0] = 0;
1527 val
= get_relative_value(cval
, val
);
1528 ucontrol
->value
.enumerated
.item
[0] = val
;
1532 /* put callback for selector unit */
1533 static int mixer_ctl_selector_put(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
1535 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1538 err
= get_cur_ctl_value(cval
, 0, &oval
);
1540 if (cval
->mixer
->ignore_ctl_error
)
1544 val
= ucontrol
->value
.enumerated
.item
[0];
1545 val
= get_abs_value(cval
, val
);
1547 set_cur_ctl_value(cval
, 0, val
);
1553 /* alsa control interface for selector unit */
1554 static struct snd_kcontrol_new mixer_selectunit_ctl
= {
1555 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
1556 .name
= "", /* will be filled later */
1557 .info
= mixer_ctl_selector_info
,
1558 .get
= mixer_ctl_selector_get
,
1559 .put
= mixer_ctl_selector_put
,
1563 /* private free callback.
1564 * free both private_data and private_value
1566 static void usb_mixer_selector_elem_free(struct snd_kcontrol
*kctl
)
1570 if (kctl
->private_data
) {
1571 struct usb_mixer_elem_info
*cval
= kctl
->private_data
;
1572 num_ins
= cval
->max
;
1574 kctl
->private_data
= NULL
;
1576 if (kctl
->private_value
) {
1577 char **itemlist
= (char **)kctl
->private_value
;
1578 for (i
= 0; i
< num_ins
; i
++)
1581 kctl
->private_value
= 0;
1586 * parse a selector unit
1588 static int parse_audio_selector_unit(struct mixer_build
*state
, int unitid
, unsigned char *desc
)
1590 unsigned int num_ins
= desc
[4];
1591 unsigned int i
, nameid
, len
;
1593 struct usb_mixer_elem_info
*cval
;
1594 struct snd_kcontrol
*kctl
;
1597 if (! num_ins
|| desc
[0] < 5 + num_ins
) {
1598 snd_printk(KERN_ERR
"invalid SELECTOR UNIT descriptor %d\n", unitid
);
1602 for (i
= 0; i
< num_ins
; i
++) {
1603 if ((err
= parse_audio_unit(state
, desc
[5 + i
])) < 0)
1607 if (num_ins
== 1) /* only one ? nonsense! */
1610 if (check_ignored_ctl(state
, unitid
, 0))
1613 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
1615 snd_printk(KERN_ERR
"cannot malloc kcontrol\n");
1618 cval
->mixer
= state
->mixer
;
1620 cval
->val_type
= USB_MIXER_U8
;
1623 cval
->max
= num_ins
;
1625 cval
->initialized
= 1;
1627 namelist
= kmalloc(sizeof(char *) * num_ins
, GFP_KERNEL
);
1629 snd_printk(KERN_ERR
"cannot malloc\n");
1633 #define MAX_ITEM_NAME_LEN 64
1634 for (i
= 0; i
< num_ins
; i
++) {
1635 struct usb_audio_term iterm
;
1637 namelist
[i
] = kmalloc(MAX_ITEM_NAME_LEN
, GFP_KERNEL
);
1638 if (! namelist
[i
]) {
1639 snd_printk(KERN_ERR
"cannot malloc\n");
1646 len
= check_mapped_selector_name(state
, unitid
, i
, namelist
[i
],
1648 if (! len
&& check_input_term(state
, desc
[5 + i
], &iterm
) >= 0)
1649 len
= get_term_name(state
, &iterm
, namelist
[i
], MAX_ITEM_NAME_LEN
, 0);
1651 sprintf(namelist
[i
], "Input %d", i
);
1654 kctl
= snd_ctl_new1(&mixer_selectunit_ctl
, cval
);
1656 snd_printk(KERN_ERR
"cannot malloc kcontrol\n");
1661 kctl
->private_value
= (unsigned long)namelist
;
1662 kctl
->private_free
= usb_mixer_selector_elem_free
;
1664 nameid
= desc
[desc
[0] - 1];
1665 len
= check_mapped_name(state
, unitid
, 0, kctl
->id
.name
, sizeof(kctl
->id
.name
));
1669 snd_usb_copy_string_desc(state
, nameid
, kctl
->id
.name
, sizeof(kctl
->id
.name
));
1671 len
= get_term_name(state
, &state
->oterm
,
1672 kctl
->id
.name
, sizeof(kctl
->id
.name
), 0);
1674 strlcpy(kctl
->id
.name
, "USB", sizeof(kctl
->id
.name
));
1676 if ((state
->oterm
.type
& 0xff00) == 0x0100)
1677 append_ctl_name(kctl
, " Capture Source");
1679 append_ctl_name(kctl
, " Playback Source");
1682 snd_printdd(KERN_INFO
"[%d] SU [%s] items = %d\n",
1683 cval
->id
, kctl
->id
.name
, num_ins
);
1684 if ((err
= add_control_to_empty(state
, kctl
)) < 0)
1692 * parse an audio unit recursively
1695 static int parse_audio_unit(struct mixer_build
*state
, int unitid
)
1699 if (test_and_set_bit(unitid
, state
->unitbitmap
))
1700 return 0; /* the unit already visited */
1702 p1
= find_audio_control_unit(state
, unitid
);
1704 snd_printk(KERN_ERR
"usbaudio: unit %d not found!\n", unitid
);
1709 case INPUT_TERMINAL
:
1712 return parse_audio_mixer_unit(state
, unitid
, p1
);
1714 return parse_audio_selector_unit(state
, unitid
, p1
);
1716 return parse_audio_feature_unit(state
, unitid
, p1
);
1717 case PROCESSING_UNIT
:
1718 return parse_audio_processing_unit(state
, unitid
, p1
);
1719 case EXTENSION_UNIT
:
1720 return parse_audio_extension_unit(state
, unitid
, p1
);
1722 snd_printk(KERN_ERR
"usbaudio: unit %u: unexpected type 0x%02x\n", unitid
, p1
[2]);
1727 static void snd_usb_mixer_free(struct usb_mixer_interface
*mixer
)
1729 kfree(mixer
->id_elems
);
1731 kfree(mixer
->urb
->transfer_buffer
);
1732 usb_free_urb(mixer
->urb
);
1734 usb_free_urb(mixer
->rc_urb
);
1735 kfree(mixer
->rc_setup_packet
);
1739 static int snd_usb_mixer_dev_free(struct snd_device
*device
)
1741 struct usb_mixer_interface
*mixer
= device
->device_data
;
1742 snd_usb_mixer_free(mixer
);
1747 * create mixer controls
1749 * walk through all OUTPUT_TERMINAL descriptors to search for mixers
1751 static int snd_usb_mixer_controls(struct usb_mixer_interface
*mixer
)
1753 unsigned char *desc
;
1754 struct mixer_build state
;
1756 const struct usbmix_ctl_map
*map
;
1757 struct usb_host_interface
*hostif
;
1759 hostif
= &usb_ifnum_to_if(mixer
->chip
->dev
, mixer
->ctrlif
)->altsetting
[0];
1760 memset(&state
, 0, sizeof(state
));
1761 state
.chip
= mixer
->chip
;
1762 state
.mixer
= mixer
;
1763 state
.buffer
= hostif
->extra
;
1764 state
.buflen
= hostif
->extralen
;
1766 /* check the mapping table */
1767 for (map
= usbmix_ctl_maps
; map
->id
; map
++) {
1768 if (map
->id
== state
.chip
->usb_id
) {
1769 state
.map
= map
->map
;
1770 state
.selector_map
= map
->selector_map
;
1771 mixer
->ignore_ctl_error
= map
->ignore_ctl_error
;
1777 while ((desc
= snd_usb_find_csint_desc(hostif
->extra
, hostif
->extralen
, desc
, OUTPUT_TERMINAL
)) != NULL
) {
1779 continue; /* invalid descriptor? */
1780 set_bit(desc
[3], state
.unitbitmap
); /* mark terminal ID as visited */
1781 state
.oterm
.id
= desc
[3];
1782 state
.oterm
.type
= combine_word(&desc
[4]);
1783 state
.oterm
.name
= desc
[8];
1784 err
= parse_audio_unit(&state
, desc
[7]);
1791 static void snd_usb_mixer_notify_id(struct usb_mixer_interface
*mixer
,
1794 struct usb_mixer_elem_info
*info
;
1796 for (info
= mixer
->id_elems
[unitid
]; info
; info
= info
->next_id_elem
)
1797 snd_ctl_notify(mixer
->chip
->card
, SNDRV_CTL_EVENT_MASK_VALUE
,
1801 static void snd_usb_mixer_memory_change(struct usb_mixer_interface
*mixer
,
1806 /* unit ids specific to Extigy/Audigy 2 NX: */
1808 case 0: /* remote control */
1809 mixer
->rc_urb
->dev
= mixer
->chip
->dev
;
1810 usb_submit_urb(mixer
->rc_urb
, GFP_ATOMIC
);
1812 case 4: /* digital in jack */
1813 case 7: /* line in jacks */
1814 case 19: /* speaker out jacks */
1815 case 20: /* headphones out jack */
1817 /* live24ext: 4 = line-in jack */
1818 case 3: /* hp-out jack (may actuate Mute) */
1819 if (mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3040) ||
1820 mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3048))
1821 snd_usb_mixer_notify_id(mixer
, mixer
->rc_cfg
->mute_mixer_id
);
1824 snd_printd(KERN_DEBUG
"memory change in unknown unit %d\n", unitid
);
1829 static void snd_usb_mixer_status_complete(struct urb
*urb
)
1831 struct usb_mixer_interface
*mixer
= urb
->context
;
1833 if (urb
->status
== 0) {
1834 u8
*buf
= urb
->transfer_buffer
;
1837 for (i
= urb
->actual_length
; i
>= 2; buf
+= 2, i
-= 2) {
1838 snd_printd(KERN_DEBUG
"status interrupt: %02x %02x\n",
1840 /* ignore any notifications not from the control interface */
1841 if ((buf
[0] & 0x0f) != 0)
1843 if (!(buf
[0] & 0x40))
1844 snd_usb_mixer_notify_id(mixer
, buf
[1]);
1846 snd_usb_mixer_memory_change(mixer
, buf
[1]);
1849 if (urb
->status
!= -ENOENT
&& urb
->status
!= -ECONNRESET
) {
1850 urb
->dev
= mixer
->chip
->dev
;
1851 usb_submit_urb(urb
, GFP_ATOMIC
);
1855 /* create the handler for the optional status interrupt endpoint */
1856 static int snd_usb_mixer_status_create(struct usb_mixer_interface
*mixer
)
1858 struct usb_host_interface
*hostif
;
1859 struct usb_endpoint_descriptor
*ep
;
1860 void *transfer_buffer
;
1864 hostif
= &usb_ifnum_to_if(mixer
->chip
->dev
, mixer
->ctrlif
)->altsetting
[0];
1865 /* we need one interrupt input endpoint */
1866 if (get_iface_desc(hostif
)->bNumEndpoints
< 1)
1868 ep
= get_endpoint(hostif
, 0);
1869 if (!usb_endpoint_dir_in(ep
) || !usb_endpoint_xfer_int(ep
))
1872 epnum
= usb_endpoint_num(ep
);
1873 buffer_length
= le16_to_cpu(ep
->wMaxPacketSize
);
1874 transfer_buffer
= kmalloc(buffer_length
, GFP_KERNEL
);
1875 if (!transfer_buffer
)
1877 mixer
->urb
= usb_alloc_urb(0, GFP_KERNEL
);
1879 kfree(transfer_buffer
);
1882 usb_fill_int_urb(mixer
->urb
, mixer
->chip
->dev
,
1883 usb_rcvintpipe(mixer
->chip
->dev
, epnum
),
1884 transfer_buffer
, buffer_length
,
1885 snd_usb_mixer_status_complete
, mixer
, ep
->bInterval
);
1886 usb_submit_urb(mixer
->urb
, GFP_KERNEL
);
1890 static void snd_usb_soundblaster_remote_complete(struct urb
*urb
)
1892 struct usb_mixer_interface
*mixer
= urb
->context
;
1893 const struct rc_config
*rc
= mixer
->rc_cfg
;
1896 if (urb
->status
< 0 || urb
->actual_length
< rc
->min_packet_length
)
1899 code
= mixer
->rc_buffer
[rc
->offset
];
1900 if (rc
->length
== 2)
1901 code
|= mixer
->rc_buffer
[rc
->offset
+ 1] << 8;
1903 /* the Mute button actually changes the mixer control */
1904 if (code
== rc
->mute_code
)
1905 snd_usb_mixer_notify_id(mixer
, rc
->mute_mixer_id
);
1906 mixer
->rc_code
= code
;
1908 wake_up(&mixer
->rc_waitq
);
1911 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep
*hw
, char __user
*buf
,
1912 long count
, loff_t
*offset
)
1914 struct usb_mixer_interface
*mixer
= hw
->private_data
;
1918 if (count
!= 1 && count
!= 4)
1920 err
= wait_event_interruptible(mixer
->rc_waitq
,
1921 (rc_code
= xchg(&mixer
->rc_code
, 0)) != 0);
1924 err
= put_user(rc_code
, buf
);
1926 err
= put_user(rc_code
, (u32 __user
*)buf
);
1928 return err
< 0 ? err
: count
;
1931 static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep
*hw
, struct file
*file
,
1934 struct usb_mixer_interface
*mixer
= hw
->private_data
;
1936 poll_wait(file
, &mixer
->rc_waitq
, wait
);
1937 return mixer
->rc_code
? POLLIN
| POLLRDNORM
: 0;
1940 static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface
*mixer
)
1942 struct snd_hwdep
*hwdep
;
1945 for (i
= 0; i
< ARRAY_SIZE(rc_configs
); ++i
)
1946 if (rc_configs
[i
].usb_id
== mixer
->chip
->usb_id
)
1948 if (i
>= ARRAY_SIZE(rc_configs
))
1950 mixer
->rc_cfg
= &rc_configs
[i
];
1952 len
= mixer
->rc_cfg
->packet_length
;
1954 init_waitqueue_head(&mixer
->rc_waitq
);
1955 err
= snd_hwdep_new(mixer
->chip
->card
, "SB remote control", 0, &hwdep
);
1958 snprintf(hwdep
->name
, sizeof(hwdep
->name
),
1959 "%s remote control", mixer
->chip
->card
->shortname
);
1960 hwdep
->iface
= SNDRV_HWDEP_IFACE_SB_RC
;
1961 hwdep
->private_data
= mixer
;
1962 hwdep
->ops
.read
= snd_usb_sbrc_hwdep_read
;
1963 hwdep
->ops
.poll
= snd_usb_sbrc_hwdep_poll
;
1964 hwdep
->exclusive
= 1;
1966 mixer
->rc_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1969 mixer
->rc_setup_packet
= kmalloc(sizeof(*mixer
->rc_setup_packet
), GFP_KERNEL
);
1970 if (!mixer
->rc_setup_packet
) {
1971 usb_free_urb(mixer
->rc_urb
);
1972 mixer
->rc_urb
= NULL
;
1975 mixer
->rc_setup_packet
->bRequestType
=
1976 USB_DIR_IN
| USB_TYPE_CLASS
| USB_RECIP_INTERFACE
;
1977 mixer
->rc_setup_packet
->bRequest
= GET_MEM
;
1978 mixer
->rc_setup_packet
->wValue
= cpu_to_le16(0);
1979 mixer
->rc_setup_packet
->wIndex
= cpu_to_le16(0);
1980 mixer
->rc_setup_packet
->wLength
= cpu_to_le16(len
);
1981 usb_fill_control_urb(mixer
->rc_urb
, mixer
->chip
->dev
,
1982 usb_rcvctrlpipe(mixer
->chip
->dev
, 0),
1983 (u8
*)mixer
->rc_setup_packet
, mixer
->rc_buffer
, len
,
1984 snd_usb_soundblaster_remote_complete
, mixer
);
1988 #define snd_audigy2nx_led_info snd_ctl_boolean_mono_info
1990 static int snd_audigy2nx_led_get(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
1992 struct usb_mixer_interface
*mixer
= snd_kcontrol_chip(kcontrol
);
1993 int index
= kcontrol
->private_value
;
1995 ucontrol
->value
.integer
.value
[0] = mixer
->audigy2nx_leds
[index
];
1999 static int snd_audigy2nx_led_put(struct snd_kcontrol
*kcontrol
, struct snd_ctl_elem_value
*ucontrol
)
2001 struct usb_mixer_interface
*mixer
= snd_kcontrol_chip(kcontrol
);
2002 int index
= kcontrol
->private_value
;
2003 int value
= ucontrol
->value
.integer
.value
[0];
2008 changed
= value
!= mixer
->audigy2nx_leds
[index
];
2009 err
= snd_usb_ctl_msg(mixer
->chip
->dev
,
2010 usb_sndctrlpipe(mixer
->chip
->dev
, 0), 0x24,
2011 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
2012 value
, index
+ 2, NULL
, 0, 100);
2015 mixer
->audigy2nx_leds
[index
] = value
;
2019 static struct snd_kcontrol_new snd_audigy2nx_controls
[] = {
2021 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
2022 .name
= "CMSS LED Switch",
2023 .info
= snd_audigy2nx_led_info
,
2024 .get
= snd_audigy2nx_led_get
,
2025 .put
= snd_audigy2nx_led_put
,
2029 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
2030 .name
= "Power LED Switch",
2031 .info
= snd_audigy2nx_led_info
,
2032 .get
= snd_audigy2nx_led_get
,
2033 .put
= snd_audigy2nx_led_put
,
2037 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
2038 .name
= "Dolby Digital LED Switch",
2039 .info
= snd_audigy2nx_led_info
,
2040 .get
= snd_audigy2nx_led_get
,
2041 .put
= snd_audigy2nx_led_put
,
2046 static int snd_audigy2nx_controls_create(struct usb_mixer_interface
*mixer
)
2050 for (i
= 0; i
< ARRAY_SIZE(snd_audigy2nx_controls
); ++i
) {
2051 if (i
> 1 && /* Live24ext has 2 LEDs only */
2052 (mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3040) ||
2053 mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3048)))
2055 err
= snd_ctl_add(mixer
->chip
->card
,
2056 snd_ctl_new1(&snd_audigy2nx_controls
[i
], mixer
));
2060 mixer
->audigy2nx_leds
[1] = 1; /* Power LED is on by default */
2064 static void snd_audigy2nx_proc_read(struct snd_info_entry
*entry
,
2065 struct snd_info_buffer
*buffer
)
2067 static const struct sb_jack
{
2070 } jacks_audigy2nx
[] = {
2076 }, jacks_live24ext
[] = {
2077 {4, "line in"}, /* &1=Line, &2=Mic*/
2078 {3, "hph out"}, /* headphones */
2079 {0, "RC "}, /* last command, 6 bytes see rc_config above */
2082 const struct sb_jack
*jacks
;
2083 struct usb_mixer_interface
*mixer
= entry
->private_data
;
2087 snd_iprintf(buffer
, "%s jacks\n\n", mixer
->chip
->card
->shortname
);
2088 if (mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3020))
2089 jacks
= jacks_audigy2nx
;
2090 else if (mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3040) ||
2091 mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3048))
2092 jacks
= jacks_live24ext
;
2096 for (i
= 0; jacks
[i
].name
; ++i
) {
2097 snd_iprintf(buffer
, "%s: ", jacks
[i
].name
);
2098 err
= snd_usb_ctl_msg(mixer
->chip
->dev
,
2099 usb_rcvctrlpipe(mixer
->chip
->dev
, 0),
2100 GET_MEM
, USB_DIR_IN
| USB_TYPE_CLASS
|
2101 USB_RECIP_INTERFACE
, 0,
2102 jacks
[i
].unitid
<< 8, buf
, 3, 100);
2103 if (err
== 3 && (buf
[0] == 3 || buf
[0] == 6))
2104 snd_iprintf(buffer
, "%02x %02x\n", buf
[1], buf
[2]);
2106 snd_iprintf(buffer
, "?\n");
2110 static int snd_xonar_u1_switch_get(struct snd_kcontrol
*kcontrol
,
2111 struct snd_ctl_elem_value
*ucontrol
)
2113 struct usb_mixer_interface
*mixer
= snd_kcontrol_chip(kcontrol
);
2115 ucontrol
->value
.integer
.value
[0] = !!(mixer
->xonar_u1_status
& 0x02);
2119 static int snd_xonar_u1_switch_put(struct snd_kcontrol
*kcontrol
,
2120 struct snd_ctl_elem_value
*ucontrol
)
2122 struct usb_mixer_interface
*mixer
= snd_kcontrol_chip(kcontrol
);
2123 u8 old_status
, new_status
;
2126 old_status
= mixer
->xonar_u1_status
;
2127 if (ucontrol
->value
.integer
.value
[0])
2128 new_status
= old_status
| 0x02;
2130 new_status
= old_status
& ~0x02;
2131 changed
= new_status
!= old_status
;
2132 err
= snd_usb_ctl_msg(mixer
->chip
->dev
,
2133 usb_sndctrlpipe(mixer
->chip
->dev
, 0), 0x08,
2134 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_OTHER
,
2135 50, 0, &new_status
, 1, 100);
2138 mixer
->xonar_u1_status
= new_status
;
2142 static struct snd_kcontrol_new snd_xonar_u1_output_switch
= {
2143 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
2144 .name
= "Digital Playback Switch",
2145 .info
= snd_ctl_boolean_mono_info
,
2146 .get
= snd_xonar_u1_switch_get
,
2147 .put
= snd_xonar_u1_switch_put
,
2150 static int snd_xonar_u1_controls_create(struct usb_mixer_interface
*mixer
)
2154 err
= snd_ctl_add(mixer
->chip
->card
,
2155 snd_ctl_new1(&snd_xonar_u1_output_switch
, mixer
));
2158 mixer
->xonar_u1_status
= 0x05;
2162 void snd_emuusb_set_samplerate(struct snd_usb_audio
*chip
,
2163 unsigned char samplerate_id
)
2165 struct usb_mixer_interface
*mixer
;
2166 struct usb_mixer_elem_info
*cval
;
2167 int unitid
= 12; /* SamleRate ExtensionUnit ID */
2169 list_for_each_entry(mixer
, &chip
->mixer_list
, list
) {
2170 cval
= mixer
->id_elems
[unitid
];
2172 set_cur_ctl_value(cval
, cval
->control
<< 8, samplerate_id
);
2173 snd_usb_mixer_notify_id(mixer
, unitid
);
2179 int snd_usb_create_mixer(struct snd_usb_audio
*chip
, int ctrlif
,
2182 static struct snd_device_ops dev_ops
= {
2183 .dev_free
= snd_usb_mixer_dev_free
2185 struct usb_mixer_interface
*mixer
;
2188 strcpy(chip
->card
->mixername
, "USB Mixer");
2190 mixer
= kzalloc(sizeof(*mixer
), GFP_KERNEL
);
2194 mixer
->ctrlif
= ctrlif
;
2195 mixer
->ignore_ctl_error
= ignore_error
;
2196 mixer
->id_elems
= kcalloc(256, sizeof(*mixer
->id_elems
), GFP_KERNEL
);
2197 if (!mixer
->id_elems
) {
2202 if ((err
= snd_usb_mixer_controls(mixer
)) < 0 ||
2203 (err
= snd_usb_mixer_status_create(mixer
)) < 0)
2206 if ((err
= snd_usb_soundblaster_remote_init(mixer
)) < 0)
2209 if (mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3020) ||
2210 mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3040) ||
2211 mixer
->chip
->usb_id
== USB_ID(0x041e, 0x3048)) {
2212 struct snd_info_entry
*entry
;
2214 if ((err
= snd_audigy2nx_controls_create(mixer
)) < 0)
2216 if (!snd_card_proc_new(chip
->card
, "audigy2nx", &entry
))
2217 snd_info_set_text_ops(entry
, mixer
,
2218 snd_audigy2nx_proc_read
);
2221 if (mixer
->chip
->usb_id
== USB_ID(0x0b05, 0x1739) ||
2222 mixer
->chip
->usb_id
== USB_ID(0x0b05, 0x1743)) {
2223 err
= snd_xonar_u1_controls_create(mixer
);
2228 err
= snd_device_new(chip
->card
, SNDRV_DEV_LOWLEVEL
, mixer
, &dev_ops
);
2231 list_add(&mixer
->list
, &chip
->mixer_list
);
2235 snd_usb_mixer_free(mixer
);
2239 void snd_usb_mixer_disconnect(struct list_head
*p
)
2241 struct usb_mixer_interface
*mixer
;
2243 mixer
= list_entry(p
, struct usb_mixer_interface
, list
);
2244 usb_kill_urb(mixer
->urb
);
2245 usb_kill_urb(mixer
->rc_urb
);