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, 0x0819): /* Logitech Webcam C210 */
917 case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */
918 case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */
919 case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */
920 case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
921 case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */
922 case USB_ID(0x046d, 0x0991):
923 /* Most audio usb devices lie about volume resolution.
924 * Most Logitech webcams have res = 384.
925 * Proboly there is some logitech magic behind this number --fishor
927 if (!strcmp(kctl
->id
.name
, "Mic Capture Volume")) {
929 "set resolution quirk: cval->res = 384\n");
937 * retrieve the minimum and maximum values for the specified control
939 static int get_min_max_with_quirks(struct usb_mixer_elem_info
*cval
,
940 int default_min
, struct snd_kcontrol
*kctl
)
943 cval
->min
= default_min
;
944 cval
->max
= cval
->min
+ 1;
946 cval
->dBmin
= cval
->dBmax
= 0;
948 if (cval
->val_type
== USB_MIXER_BOOLEAN
||
949 cval
->val_type
== USB_MIXER_INV_BOOLEAN
) {
950 cval
->initialized
= 1;
955 for (i
= 0; i
< MAX_CHANNELS
; i
++)
956 if (cval
->cmask
& (1 << i
)) {
961 if (get_ctl_value(cval
, UAC_GET_MAX
, (cval
->control
<< 8) | minchn
, &cval
->max
) < 0 ||
962 get_ctl_value(cval
, UAC_GET_MIN
, (cval
->control
<< 8) | minchn
, &cval
->min
) < 0) {
963 usb_audio_err(cval
->head
.mixer
->chip
,
964 "%d:%d: cannot get min/max values for control %d (id %d)\n",
965 cval
->head
.id
, snd_usb_ctrl_intf(cval
->head
.mixer
->chip
),
966 cval
->control
, cval
->head
.id
);
969 if (get_ctl_value(cval
, UAC_GET_RES
,
970 (cval
->control
<< 8) | minchn
,
974 int last_valid_res
= cval
->res
;
976 while (cval
->res
> 1) {
977 if (snd_usb_mixer_set_ctl_value(cval
, UAC_SET_RES
,
978 (cval
->control
<< 8) | minchn
,
983 if (get_ctl_value(cval
, UAC_GET_RES
,
984 (cval
->control
<< 8) | minchn
, &cval
->res
) < 0)
985 cval
->res
= last_valid_res
;
990 /* Additional checks for the proper resolution
992 * Some devices report smaller resolutions than actually
993 * reacting. They don't return errors but simply clip
994 * to the lower aligned value.
996 if (cval
->min
+ cval
->res
< cval
->max
) {
997 int last_valid_res
= cval
->res
;
998 int saved
, test
, check
;
999 get_cur_mix_raw(cval
, minchn
, &saved
);
1002 if (test
< cval
->max
)
1006 if (test
< cval
->min
|| test
> cval
->max
||
1007 snd_usb_set_cur_mix_value(cval
, minchn
, 0, test
) ||
1008 get_cur_mix_raw(cval
, minchn
, &check
)) {
1009 cval
->res
= last_valid_res
;
1016 snd_usb_set_cur_mix_value(cval
, minchn
, 0, saved
);
1019 cval
->initialized
= 1;
1023 volume_control_quirks(cval
, kctl
);
1025 /* USB descriptions contain the dB scale in 1/256 dB unit
1026 * while ALSA TLV contains in 1/100 dB unit
1028 cval
->dBmin
= (convert_signed_value(cval
, cval
->min
) * 100) / 256;
1029 cval
->dBmax
= (convert_signed_value(cval
, cval
->max
) * 100) / 256;
1030 if (cval
->dBmin
> cval
->dBmax
) {
1031 /* something is wrong; assume it's either from/to 0dB */
1032 if (cval
->dBmin
< 0)
1034 else if (cval
->dBmin
> 0)
1036 if (cval
->dBmin
> cval
->dBmax
) {
1037 /* totally crap, return an error */
1045 #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL)
1047 /* get a feature/mixer unit info */
1048 static int mixer_ctl_feature_info(struct snd_kcontrol
*kcontrol
,
1049 struct snd_ctl_elem_info
*uinfo
)
1051 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1053 if (cval
->val_type
== USB_MIXER_BOOLEAN
||
1054 cval
->val_type
== USB_MIXER_INV_BOOLEAN
)
1055 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
1057 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
1058 uinfo
->count
= cval
->channels
;
1059 if (cval
->val_type
== USB_MIXER_BOOLEAN
||
1060 cval
->val_type
== USB_MIXER_INV_BOOLEAN
) {
1061 uinfo
->value
.integer
.min
= 0;
1062 uinfo
->value
.integer
.max
= 1;
1064 if (!cval
->initialized
) {
1065 get_min_max_with_quirks(cval
, 0, kcontrol
);
1066 if (cval
->initialized
&& cval
->dBmin
>= cval
->dBmax
) {
1067 kcontrol
->vd
[0].access
&=
1068 ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ
|
1069 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK
);
1070 snd_ctl_notify(cval
->head
.mixer
->chip
->card
,
1071 SNDRV_CTL_EVENT_MASK_INFO
,
1075 uinfo
->value
.integer
.min
= 0;
1076 uinfo
->value
.integer
.max
=
1077 (cval
->max
- cval
->min
+ cval
->res
- 1) / cval
->res
;
1082 /* get the current value from feature/mixer unit */
1083 static int mixer_ctl_feature_get(struct snd_kcontrol
*kcontrol
,
1084 struct snd_ctl_elem_value
*ucontrol
)
1086 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1087 int c
, cnt
, val
, err
;
1089 ucontrol
->value
.integer
.value
[0] = cval
->min
;
1092 for (c
= 0; c
< MAX_CHANNELS
; c
++) {
1093 if (!(cval
->cmask
& (1 << c
)))
1095 err
= snd_usb_get_cur_mix_value(cval
, c
+ 1, cnt
, &val
);
1097 return filter_error(cval
, err
);
1098 val
= get_relative_value(cval
, val
);
1099 ucontrol
->value
.integer
.value
[cnt
] = val
;
1104 /* master channel */
1105 err
= snd_usb_get_cur_mix_value(cval
, 0, 0, &val
);
1107 return filter_error(cval
, err
);
1108 val
= get_relative_value(cval
, val
);
1109 ucontrol
->value
.integer
.value
[0] = val
;
1114 /* put the current value to feature/mixer unit */
1115 static int mixer_ctl_feature_put(struct snd_kcontrol
*kcontrol
,
1116 struct snd_ctl_elem_value
*ucontrol
)
1118 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1119 int c
, cnt
, val
, oval
, err
;
1124 for (c
= 0; c
< MAX_CHANNELS
; c
++) {
1125 if (!(cval
->cmask
& (1 << c
)))
1127 err
= snd_usb_get_cur_mix_value(cval
, c
+ 1, cnt
, &oval
);
1129 return filter_error(cval
, err
);
1130 val
= ucontrol
->value
.integer
.value
[cnt
];
1131 val
= get_abs_value(cval
, val
);
1133 snd_usb_set_cur_mix_value(cval
, c
+ 1, cnt
, val
);
1139 /* master channel */
1140 err
= snd_usb_get_cur_mix_value(cval
, 0, 0, &oval
);
1142 return filter_error(cval
, err
);
1143 val
= ucontrol
->value
.integer
.value
[0];
1144 val
= get_abs_value(cval
, val
);
1146 snd_usb_set_cur_mix_value(cval
, 0, 0, val
);
1153 static struct snd_kcontrol_new usb_feature_unit_ctl
= {
1154 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
1155 .name
= "", /* will be filled later manually */
1156 .info
= mixer_ctl_feature_info
,
1157 .get
= mixer_ctl_feature_get
,
1158 .put
= mixer_ctl_feature_put
,
1161 /* the read-only variant */
1162 static struct snd_kcontrol_new usb_feature_unit_ctl_ro
= {
1163 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
1164 .name
= "", /* will be filled later manually */
1165 .info
= mixer_ctl_feature_info
,
1166 .get
= mixer_ctl_feature_get
,
1171 * This symbol is exported in order to allow the mixer quirks to
1172 * hook up to the standard feature unit control mechanism
1174 struct snd_kcontrol_new
*snd_usb_feature_unit_ctl
= &usb_feature_unit_ctl
;
1177 * build a feature control
1179 static size_t append_ctl_name(struct snd_kcontrol
*kctl
, const char *str
)
1181 return strlcat(kctl
->id
.name
, str
, sizeof(kctl
->id
.name
));
1185 * A lot of headsets/headphones have a "Speaker" mixer. Make sure we
1186 * rename it to "Headphone". We determine if something is a headphone
1187 * similar to how udev determines form factor.
1189 static void check_no_speaker_on_headset(struct snd_kcontrol
*kctl
,
1190 struct snd_card
*card
)
1192 const char *names_to_check
[] = {
1193 "Headset", "headset", "Headphone", "headphone", NULL
};
1197 if (strcmp("Speaker", kctl
->id
.name
))
1200 for (s
= names_to_check
; *s
; s
++)
1201 if (strstr(card
->shortname
, *s
)) {
1209 strlcpy(kctl
->id
.name
, "Headphone", sizeof(kctl
->id
.name
));
1212 static void build_feature_ctl(struct mixer_build
*state
, void *raw_desc
,
1213 unsigned int ctl_mask
, int control
,
1214 struct usb_audio_term
*iterm
, int unitid
,
1217 struct uac_feature_unit_descriptor
*desc
= raw_desc
;
1218 unsigned int len
= 0;
1219 int mapped_name
= 0;
1220 int nameid
= uac_feature_unit_iFeature(desc
);
1221 struct snd_kcontrol
*kctl
;
1222 struct usb_mixer_elem_info
*cval
;
1223 const struct usbmix_name_map
*map
;
1226 control
++; /* change from zero-based to 1-based value */
1228 if (control
== UAC_FU_GRAPHIC_EQUALIZER
) {
1229 /* FIXME: not supported yet */
1233 map
= find_map(state
, unitid
, control
);
1234 if (check_ignored_ctl(map
))
1237 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
1240 snd_usb_mixer_elem_init_std(&cval
->head
, state
->mixer
, unitid
);
1241 cval
->control
= control
;
1242 cval
->cmask
= ctl_mask
;
1243 cval
->val_type
= audio_feature_info
[control
-1].type
;
1244 if (ctl_mask
== 0) {
1245 cval
->channels
= 1; /* master channel */
1246 cval
->master_readonly
= readonly_mask
;
1249 for (i
= 0; i
< 16; i
++)
1250 if (ctl_mask
& (1 << i
))
1253 cval
->ch_readonly
= readonly_mask
;
1257 * If all channels in the mask are marked read-only, make the control
1258 * read-only. snd_usb_set_cur_mix_value() will check the mask again and won't
1259 * issue write commands to read-only channels.
1261 if (cval
->channels
== readonly_mask
)
1262 kctl
= snd_ctl_new1(&usb_feature_unit_ctl_ro
, cval
);
1264 kctl
= snd_ctl_new1(&usb_feature_unit_ctl
, cval
);
1267 usb_audio_err(state
->chip
, "cannot malloc kcontrol\n");
1271 kctl
->private_free
= snd_usb_mixer_elem_free
;
1273 len
= check_mapped_name(map
, kctl
->id
.name
, sizeof(kctl
->id
.name
));
1274 mapped_name
= len
!= 0;
1276 len
= snd_usb_copy_string_desc(state
, nameid
,
1277 kctl
->id
.name
, sizeof(kctl
->id
.name
));
1283 * determine the control name. the rule is:
1284 * - if a name id is given in descriptor, use it.
1285 * - if the connected input can be determined, then use the name
1287 * - if the connected output can be determined, use it.
1288 * - otherwise, anonymous name.
1291 len
= get_term_name(state
, iterm
, kctl
->id
.name
,
1292 sizeof(kctl
->id
.name
), 1);
1294 len
= get_term_name(state
, &state
->oterm
,
1296 sizeof(kctl
->id
.name
), 1);
1298 snprintf(kctl
->id
.name
, sizeof(kctl
->id
.name
),
1299 "Feature %d", unitid
);
1303 check_no_speaker_on_headset(kctl
, state
->mixer
->chip
->card
);
1306 * determine the stream direction:
1307 * if the connected output is USB stream, then it's likely a
1308 * capture stream. otherwise it should be playback (hopefully :)
1310 if (!mapped_name
&& !(state
->oterm
.type
>> 16)) {
1311 if ((state
->oterm
.type
& 0xff00) == 0x0100)
1312 append_ctl_name(kctl
, " Capture");
1314 append_ctl_name(kctl
, " Playback");
1316 append_ctl_name(kctl
, control
== UAC_FU_MUTE
?
1317 " Switch" : " Volume");
1321 strlcpy(kctl
->id
.name
, audio_feature_info
[control
-1].name
,
1322 sizeof(kctl
->id
.name
));
1326 /* get min/max values */
1327 get_min_max_with_quirks(cval
, 0, kctl
);
1329 if (control
== UAC_FU_VOLUME
) {
1330 check_mapped_dB(map
, cval
);
1331 if (cval
->dBmin
< cval
->dBmax
|| !cval
->initialized
) {
1332 kctl
->tlv
.c
= snd_usb_mixer_vol_tlv
;
1333 kctl
->vd
[0].access
|=
1334 SNDRV_CTL_ELEM_ACCESS_TLV_READ
|
1335 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK
;
1339 range
= (cval
->max
- cval
->min
) / cval
->res
;
1341 * Are there devices with volume range more than 255? I use a bit more
1342 * to be sure. 384 is a resolution magic number found on Logitech
1343 * devices. It will definitively catch all buggy Logitech devices.
1346 usb_audio_warn(state
->chip
,
1347 "Warning! Unlikely big volume range (=%u), cval->res is probably wrong.",
1349 usb_audio_warn(state
->chip
,
1350 "[%d] FU [%s] ch = %d, val = %d/%d/%d",
1351 cval
->head
.id
, kctl
->id
.name
, cval
->channels
,
1352 cval
->min
, cval
->max
, cval
->res
);
1355 usb_audio_dbg(state
->chip
, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
1356 cval
->head
.id
, kctl
->id
.name
, cval
->channels
,
1357 cval
->min
, cval
->max
, cval
->res
);
1358 snd_usb_mixer_add_control(&cval
->head
, kctl
);
1362 * parse a feature unit
1364 * most of controls are defined here.
1366 static int parse_audio_feature_unit(struct mixer_build
*state
, int unitid
,
1370 struct usb_audio_term iterm
;
1371 unsigned int master_bits
, first_ch_bits
;
1373 struct uac_feature_unit_descriptor
*hdr
= _ftr
;
1376 if (state
->mixer
->protocol
== UAC_VERSION_1
) {
1377 csize
= hdr
->bControlSize
;
1379 usb_audio_dbg(state
->chip
,
1380 "unit %u: invalid bControlSize == 0\n",
1384 channels
= (hdr
->bLength
- 7) / csize
- 1;
1385 bmaControls
= hdr
->bmaControls
;
1386 if (hdr
->bLength
< 7 + csize
) {
1387 usb_audio_err(state
->chip
,
1388 "unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
1393 struct uac2_feature_unit_descriptor
*ftr
= _ftr
;
1395 channels
= (hdr
->bLength
- 6) / 4 - 1;
1396 bmaControls
= ftr
->bmaControls
;
1397 if (hdr
->bLength
< 6 + csize
) {
1398 usb_audio_err(state
->chip
,
1399 "unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
1405 /* parse the source unit */
1406 if ((err
= parse_audio_unit(state
, hdr
->bSourceID
)) < 0)
1409 /* determine the input source type and name */
1410 err
= check_input_term(state
, hdr
->bSourceID
, &iterm
);
1414 master_bits
= snd_usb_combine_bytes(bmaControls
, csize
);
1415 /* master configuration quirks */
1416 switch (state
->chip
->usb_id
) {
1417 case USB_ID(0x08bb, 0x2702):
1418 usb_audio_info(state
->chip
,
1419 "usbmixer: master volume quirk for PCM2702 chip\n");
1420 /* disable non-functional volume control */
1421 master_bits
&= ~UAC_CONTROL_BIT(UAC_FU_VOLUME
);
1423 case USB_ID(0x1130, 0xf211):
1424 usb_audio_info(state
->chip
,
1425 "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n");
1426 /* disable non-functional volume control */
1432 first_ch_bits
= snd_usb_combine_bytes(bmaControls
+ csize
, csize
);
1436 if (state
->mixer
->protocol
== UAC_VERSION_1
) {
1437 /* check all control types */
1438 for (i
= 0; i
< 10; i
++) {
1439 unsigned int ch_bits
= 0;
1440 for (j
= 0; j
< channels
; j
++) {
1443 mask
= snd_usb_combine_bytes(bmaControls
+
1444 csize
* (j
+1), csize
);
1445 if (mask
& (1 << i
))
1446 ch_bits
|= (1 << j
);
1448 /* audio class v1 controls are never read-only */
1451 * The first channel must be set
1452 * (for ease of programming).
1455 build_feature_ctl(state
, _ftr
, ch_bits
, i
,
1457 if (master_bits
& (1 << i
))
1458 build_feature_ctl(state
, _ftr
, 0, i
, &iterm
,
1461 } else { /* UAC_VERSION_2 */
1462 for (i
= 0; i
< ARRAY_SIZE(audio_feature_info
); i
++) {
1463 unsigned int ch_bits
= 0;
1464 unsigned int ch_read_only
= 0;
1466 for (j
= 0; j
< channels
; j
++) {
1469 mask
= snd_usb_combine_bytes(bmaControls
+
1470 csize
* (j
+1), csize
);
1471 if (uac2_control_is_readable(mask
, i
)) {
1472 ch_bits
|= (1 << j
);
1473 if (!uac2_control_is_writeable(mask
, i
))
1474 ch_read_only
|= (1 << j
);
1479 * NOTE: build_feature_ctl() will mark the control
1480 * read-only if all channels are marked read-only in
1481 * the descriptors. Otherwise, the control will be
1482 * reported as writeable, but the driver will not
1483 * actually issue a write command for read-only
1488 * The first channel must be set
1489 * (for ease of programming).
1492 build_feature_ctl(state
, _ftr
, ch_bits
, i
,
1493 &iterm
, unitid
, ch_read_only
);
1494 if (uac2_control_is_readable(master_bits
, i
))
1495 build_feature_ctl(state
, _ftr
, 0, i
, &iterm
, unitid
,
1496 !uac2_control_is_writeable(master_bits
, i
));
1508 * build a mixer unit control
1510 * the callbacks are identical with feature unit.
1511 * input channel number (zero based) is given in control field instead.
1513 static void build_mixer_unit_ctl(struct mixer_build
*state
,
1514 struct uac_mixer_unit_descriptor
*desc
,
1515 int in_pin
, int in_ch
, int unitid
,
1516 struct usb_audio_term
*iterm
)
1518 struct usb_mixer_elem_info
*cval
;
1519 unsigned int num_outs
= uac_mixer_unit_bNrChannels(desc
);
1520 unsigned int i
, len
;
1521 struct snd_kcontrol
*kctl
;
1522 const struct usbmix_name_map
*map
;
1524 map
= find_map(state
, unitid
, 0);
1525 if (check_ignored_ctl(map
))
1528 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
1532 snd_usb_mixer_elem_init_std(&cval
->head
, state
->mixer
, unitid
);
1533 cval
->control
= in_ch
+ 1; /* based on 1 */
1534 cval
->val_type
= USB_MIXER_S16
;
1535 for (i
= 0; i
< num_outs
; i
++) {
1536 __u8
*c
= uac_mixer_unit_bmControls(desc
, state
->mixer
->protocol
);
1538 if (check_matrix_bitmap(c
, in_ch
, i
, num_outs
)) {
1539 cval
->cmask
|= (1 << i
);
1544 /* get min/max values */
1545 get_min_max(cval
, 0);
1547 kctl
= snd_ctl_new1(&usb_feature_unit_ctl
, cval
);
1549 usb_audio_err(state
->chip
, "cannot malloc kcontrol\n");
1553 kctl
->private_free
= snd_usb_mixer_elem_free
;
1555 len
= check_mapped_name(map
, kctl
->id
.name
, sizeof(kctl
->id
.name
));
1557 len
= get_term_name(state
, iterm
, kctl
->id
.name
,
1558 sizeof(kctl
->id
.name
), 0);
1560 len
= sprintf(kctl
->id
.name
, "Mixer Source %d", in_ch
+ 1);
1561 append_ctl_name(kctl
, " Volume");
1563 usb_audio_dbg(state
->chip
, "[%d] MU [%s] ch = %d, val = %d/%d\n",
1564 cval
->head
.id
, kctl
->id
.name
, cval
->channels
, cval
->min
, cval
->max
);
1565 snd_usb_mixer_add_control(&cval
->head
, kctl
);
1569 * parse a mixer unit
1571 static int parse_audio_mixer_unit(struct mixer_build
*state
, int unitid
,
1574 struct uac_mixer_unit_descriptor
*desc
= raw_desc
;
1575 struct usb_audio_term iterm
;
1576 int input_pins
, num_ins
, num_outs
;
1579 if (desc
->bLength
< 11 || !(input_pins
= desc
->bNrInPins
) ||
1580 !(num_outs
= uac_mixer_unit_bNrChannels(desc
))) {
1581 usb_audio_err(state
->chip
,
1582 "invalid MIXER UNIT descriptor %d\n",
1586 /* no bmControls field (e.g. Maya44) -> ignore */
1587 if (desc
->bLength
<= 10 + input_pins
) {
1588 usb_audio_dbg(state
->chip
, "MU %d has no bmControls field\n",
1595 for (pin
= 0; pin
< input_pins
; pin
++) {
1596 err
= parse_audio_unit(state
, desc
->baSourceID
[pin
]);
1599 err
= check_input_term(state
, desc
->baSourceID
[pin
], &iterm
);
1602 num_ins
+= iterm
.channels
;
1603 for (; ich
< num_ins
; ich
++) {
1604 int och
, ich_has_controls
= 0;
1606 for (och
= 0; och
< num_outs
; och
++) {
1607 __u8
*c
= uac_mixer_unit_bmControls(desc
,
1608 state
->mixer
->protocol
);
1610 if (check_matrix_bitmap(c
, ich
, och
, num_outs
)) {
1611 ich_has_controls
= 1;
1615 if (ich_has_controls
)
1616 build_mixer_unit_ctl(state
, desc
, pin
, ich
,
1624 * Processing Unit / Extension Unit
1627 /* get callback for processing/extension unit */
1628 static int mixer_ctl_procunit_get(struct snd_kcontrol
*kcontrol
,
1629 struct snd_ctl_elem_value
*ucontrol
)
1631 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1634 err
= get_cur_ctl_value(cval
, cval
->control
<< 8, &val
);
1636 ucontrol
->value
.integer
.value
[0] = cval
->min
;
1637 return filter_error(cval
, err
);
1639 val
= get_relative_value(cval
, val
);
1640 ucontrol
->value
.integer
.value
[0] = val
;
1644 /* put callback for processing/extension unit */
1645 static int mixer_ctl_procunit_put(struct snd_kcontrol
*kcontrol
,
1646 struct snd_ctl_elem_value
*ucontrol
)
1648 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1651 err
= get_cur_ctl_value(cval
, cval
->control
<< 8, &oval
);
1653 return filter_error(cval
, err
);
1654 val
= ucontrol
->value
.integer
.value
[0];
1655 val
= get_abs_value(cval
, val
);
1657 set_cur_ctl_value(cval
, cval
->control
<< 8, val
);
1663 /* alsa control interface for processing/extension unit */
1664 static struct snd_kcontrol_new mixer_procunit_ctl
= {
1665 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
1666 .name
= "", /* will be filled later */
1667 .info
= mixer_ctl_feature_info
,
1668 .get
= mixer_ctl_procunit_get
,
1669 .put
= mixer_ctl_procunit_put
,
1673 * predefined data for processing units
1675 struct procunit_value_info
{
1682 struct procunit_info
{
1685 struct procunit_value_info
*values
;
1688 static struct procunit_value_info updown_proc_info
[] = {
1689 { UAC_UD_ENABLE
, "Switch", USB_MIXER_BOOLEAN
},
1690 { UAC_UD_MODE_SELECT
, "Mode Select", USB_MIXER_U8
, 1 },
1693 static struct procunit_value_info prologic_proc_info
[] = {
1694 { UAC_DP_ENABLE
, "Switch", USB_MIXER_BOOLEAN
},
1695 { UAC_DP_MODE_SELECT
, "Mode Select", USB_MIXER_U8
, 1 },
1698 static struct procunit_value_info threed_enh_proc_info
[] = {
1699 { UAC_3D_ENABLE
, "Switch", USB_MIXER_BOOLEAN
},
1700 { UAC_3D_SPACE
, "Spaciousness", USB_MIXER_U8
},
1703 static struct procunit_value_info reverb_proc_info
[] = {
1704 { UAC_REVERB_ENABLE
, "Switch", USB_MIXER_BOOLEAN
},
1705 { UAC_REVERB_LEVEL
, "Level", USB_MIXER_U8
},
1706 { UAC_REVERB_TIME
, "Time", USB_MIXER_U16
},
1707 { UAC_REVERB_FEEDBACK
, "Feedback", USB_MIXER_U8
},
1710 static struct procunit_value_info chorus_proc_info
[] = {
1711 { UAC_CHORUS_ENABLE
, "Switch", USB_MIXER_BOOLEAN
},
1712 { UAC_CHORUS_LEVEL
, "Level", USB_MIXER_U8
},
1713 { UAC_CHORUS_RATE
, "Rate", USB_MIXER_U16
},
1714 { UAC_CHORUS_DEPTH
, "Depth", USB_MIXER_U16
},
1717 static struct procunit_value_info dcr_proc_info
[] = {
1718 { UAC_DCR_ENABLE
, "Switch", USB_MIXER_BOOLEAN
},
1719 { UAC_DCR_RATE
, "Ratio", USB_MIXER_U16
},
1720 { UAC_DCR_MAXAMPL
, "Max Amp", USB_MIXER_S16
},
1721 { UAC_DCR_THRESHOLD
, "Threshold", USB_MIXER_S16
},
1722 { UAC_DCR_ATTACK_TIME
, "Attack Time", USB_MIXER_U16
},
1723 { UAC_DCR_RELEASE_TIME
, "Release Time", USB_MIXER_U16
},
1727 static struct procunit_info procunits
[] = {
1728 { UAC_PROCESS_UP_DOWNMIX
, "Up Down", updown_proc_info
},
1729 { UAC_PROCESS_DOLBY_PROLOGIC
, "Dolby Prologic", prologic_proc_info
},
1730 { UAC_PROCESS_STEREO_EXTENDER
, "3D Stereo Extender", threed_enh_proc_info
},
1731 { UAC_PROCESS_REVERB
, "Reverb", reverb_proc_info
},
1732 { UAC_PROCESS_CHORUS
, "Chorus", chorus_proc_info
},
1733 { UAC_PROCESS_DYN_RANGE_COMP
, "DCR", dcr_proc_info
},
1737 * predefined data for extension units
1739 static struct procunit_value_info clock_rate_xu_info
[] = {
1740 { USB_XU_CLOCK_RATE_SELECTOR
, "Selector", USB_MIXER_U8
, 0 },
1743 static struct procunit_value_info clock_source_xu_info
[] = {
1744 { USB_XU_CLOCK_SOURCE_SELECTOR
, "External", USB_MIXER_BOOLEAN
},
1747 static struct procunit_value_info spdif_format_xu_info
[] = {
1748 { USB_XU_DIGITAL_FORMAT_SELECTOR
, "SPDIF/AC3", USB_MIXER_BOOLEAN
},
1751 static struct procunit_value_info soft_limit_xu_info
[] = {
1752 { USB_XU_SOFT_LIMIT_SELECTOR
, " ", USB_MIXER_BOOLEAN
},
1755 static struct procunit_info extunits
[] = {
1756 { USB_XU_CLOCK_RATE
, "Clock rate", clock_rate_xu_info
},
1757 { USB_XU_CLOCK_SOURCE
, "DigitalIn CLK source", clock_source_xu_info
},
1758 { USB_XU_DIGITAL_IO_STATUS
, "DigitalOut format:", spdif_format_xu_info
},
1759 { USB_XU_DEVICE_OPTIONS
, "AnalogueIn Soft Limit", soft_limit_xu_info
},
1764 * build a processing/extension unit
1766 static int build_audio_procunit(struct mixer_build
*state
, int unitid
,
1767 void *raw_desc
, struct procunit_info
*list
,
1770 struct uac_processing_unit_descriptor
*desc
= raw_desc
;
1771 int num_ins
= desc
->bNrInPins
;
1772 struct usb_mixer_elem_info
*cval
;
1773 struct snd_kcontrol
*kctl
;
1774 int i
, err
, nameid
, type
, len
;
1775 struct procunit_info
*info
;
1776 struct procunit_value_info
*valinfo
;
1777 const struct usbmix_name_map
*map
;
1778 static struct procunit_value_info default_value_info
[] = {
1779 { 0x01, "Switch", USB_MIXER_BOOLEAN
},
1782 static struct procunit_info default_info
= {
1783 0, NULL
, default_value_info
1786 if (desc
->bLength
< 13 || desc
->bLength
< 13 + num_ins
||
1787 desc
->bLength
< num_ins
+ uac_processing_unit_bControlSize(desc
, state
->mixer
->protocol
)) {
1788 usb_audio_err(state
->chip
, "invalid %s descriptor (id %d)\n", name
, unitid
);
1792 for (i
= 0; i
< num_ins
; i
++) {
1793 if ((err
= parse_audio_unit(state
, desc
->baSourceID
[i
])) < 0)
1797 type
= le16_to_cpu(desc
->wProcessType
);
1798 for (info
= list
; info
&& info
->type
; info
++)
1799 if (info
->type
== type
)
1801 if (!info
|| !info
->type
)
1802 info
= &default_info
;
1804 for (valinfo
= info
->values
; valinfo
->control
; valinfo
++) {
1805 __u8
*controls
= uac_processing_unit_bmControls(desc
, state
->mixer
->protocol
);
1807 if (!(controls
[valinfo
->control
/ 8] & (1 << ((valinfo
->control
% 8) - 1))))
1809 map
= find_map(state
, unitid
, valinfo
->control
);
1810 if (check_ignored_ctl(map
))
1812 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
1815 snd_usb_mixer_elem_init_std(&cval
->head
, state
->mixer
, unitid
);
1816 cval
->control
= valinfo
->control
;
1817 cval
->val_type
= valinfo
->val_type
;
1820 /* get min/max values */
1821 if (type
== UAC_PROCESS_UP_DOWNMIX
&& cval
->control
== UAC_UD_MODE_SELECT
) {
1822 __u8
*control_spec
= uac_processing_unit_specific(desc
, state
->mixer
->protocol
);
1823 /* FIXME: hard-coded */
1825 cval
->max
= control_spec
[0];
1827 cval
->initialized
= 1;
1829 if (type
== USB_XU_CLOCK_RATE
) {
1831 * E-Mu USB 0404/0202/TrackerPre/0204
1832 * samplerate control quirk
1837 cval
->initialized
= 1;
1839 get_min_max(cval
, valinfo
->min_value
);
1842 kctl
= snd_ctl_new1(&mixer_procunit_ctl
, cval
);
1847 kctl
->private_free
= snd_usb_mixer_elem_free
;
1849 if (check_mapped_name(map
, kctl
->id
.name
, sizeof(kctl
->id
.name
))) {
1851 } else if (info
->name
) {
1852 strlcpy(kctl
->id
.name
, info
->name
, sizeof(kctl
->id
.name
));
1854 nameid
= uac_processing_unit_iProcessing(desc
, state
->mixer
->protocol
);
1857 len
= snd_usb_copy_string_desc(state
, nameid
,
1859 sizeof(kctl
->id
.name
));
1861 strlcpy(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
));
1863 append_ctl_name(kctl
, " ");
1864 append_ctl_name(kctl
, valinfo
->suffix
);
1866 usb_audio_dbg(state
->chip
,
1867 "[%d] PU [%s] ch = %d, val = %d/%d\n",
1868 cval
->head
.id
, kctl
->id
.name
, cval
->channels
,
1869 cval
->min
, cval
->max
);
1871 err
= snd_usb_mixer_add_control(&cval
->head
, kctl
);
1878 static int parse_audio_processing_unit(struct mixer_build
*state
, int unitid
,
1881 return build_audio_procunit(state
, unitid
, raw_desc
,
1882 procunits
, "Processing Unit");
1885 static int parse_audio_extension_unit(struct mixer_build
*state
, int unitid
,
1889 * Note that we parse extension units with processing unit descriptors.
1890 * That's ok as the layout is the same.
1892 return build_audio_procunit(state
, unitid
, raw_desc
,
1893 extunits
, "Extension Unit");
1901 * info callback for selector unit
1902 * use an enumerator type for routing
1904 static int mixer_ctl_selector_info(struct snd_kcontrol
*kcontrol
,
1905 struct snd_ctl_elem_info
*uinfo
)
1907 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1908 const char **itemlist
= (const char **)kcontrol
->private_value
;
1910 if (snd_BUG_ON(!itemlist
))
1912 return snd_ctl_enum_info(uinfo
, 1, cval
->max
, itemlist
);
1915 /* get callback for selector unit */
1916 static int mixer_ctl_selector_get(struct snd_kcontrol
*kcontrol
,
1917 struct snd_ctl_elem_value
*ucontrol
)
1919 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1922 err
= get_cur_ctl_value(cval
, cval
->control
<< 8, &val
);
1924 ucontrol
->value
.enumerated
.item
[0] = 0;
1925 return filter_error(cval
, err
);
1927 val
= get_relative_value(cval
, val
);
1928 ucontrol
->value
.enumerated
.item
[0] = val
;
1932 /* put callback for selector unit */
1933 static int mixer_ctl_selector_put(struct snd_kcontrol
*kcontrol
,
1934 struct snd_ctl_elem_value
*ucontrol
)
1936 struct usb_mixer_elem_info
*cval
= kcontrol
->private_data
;
1939 err
= get_cur_ctl_value(cval
, cval
->control
<< 8, &oval
);
1941 return filter_error(cval
, err
);
1942 val
= ucontrol
->value
.enumerated
.item
[0];
1943 val
= get_abs_value(cval
, val
);
1945 set_cur_ctl_value(cval
, cval
->control
<< 8, val
);
1951 /* alsa control interface for selector unit */
1952 static struct snd_kcontrol_new mixer_selectunit_ctl
= {
1953 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
1954 .name
= "", /* will be filled later */
1955 .info
= mixer_ctl_selector_info
,
1956 .get
= mixer_ctl_selector_get
,
1957 .put
= mixer_ctl_selector_put
,
1961 * private free callback.
1962 * free both private_data and private_value
1964 static void usb_mixer_selector_elem_free(struct snd_kcontrol
*kctl
)
1968 if (kctl
->private_data
) {
1969 struct usb_mixer_elem_info
*cval
= kctl
->private_data
;
1970 num_ins
= cval
->max
;
1972 kctl
->private_data
= NULL
;
1974 if (kctl
->private_value
) {
1975 char **itemlist
= (char **)kctl
->private_value
;
1976 for (i
= 0; i
< num_ins
; i
++)
1979 kctl
->private_value
= 0;
1984 * parse a selector unit
1986 static int parse_audio_selector_unit(struct mixer_build
*state
, int unitid
,
1989 struct uac_selector_unit_descriptor
*desc
= raw_desc
;
1990 unsigned int i
, nameid
, len
;
1992 struct usb_mixer_elem_info
*cval
;
1993 struct snd_kcontrol
*kctl
;
1994 const struct usbmix_name_map
*map
;
1997 if (!desc
->bNrInPins
|| desc
->bLength
< 5 + desc
->bNrInPins
) {
1998 usb_audio_err(state
->chip
,
1999 "invalid SELECTOR UNIT descriptor %d\n", unitid
);
2003 for (i
= 0; i
< desc
->bNrInPins
; i
++) {
2004 if ((err
= parse_audio_unit(state
, desc
->baSourceID
[i
])) < 0)
2008 if (desc
->bNrInPins
== 1) /* only one ? nonsense! */
2011 map
= find_map(state
, unitid
, 0);
2012 if (check_ignored_ctl(map
))
2015 cval
= kzalloc(sizeof(*cval
), GFP_KERNEL
);
2018 snd_usb_mixer_elem_init_std(&cval
->head
, state
->mixer
, unitid
);
2019 cval
->val_type
= USB_MIXER_U8
;
2022 cval
->max
= desc
->bNrInPins
;
2024 cval
->initialized
= 1;
2026 if (state
->mixer
->protocol
== UAC_VERSION_1
)
2028 else /* UAC_VERSION_2 */
2029 cval
->control
= (desc
->bDescriptorSubtype
== UAC2_CLOCK_SELECTOR
) ?
2030 UAC2_CX_CLOCK_SELECTOR
: UAC2_SU_SELECTOR
;
2032 namelist
= kmalloc(sizeof(char *) * desc
->bNrInPins
, GFP_KERNEL
);
2037 #define MAX_ITEM_NAME_LEN 64
2038 for (i
= 0; i
< desc
->bNrInPins
; i
++) {
2039 struct usb_audio_term iterm
;
2041 namelist
[i
] = kmalloc(MAX_ITEM_NAME_LEN
, GFP_KERNEL
);
2049 len
= check_mapped_selector_name(state
, unitid
, i
, namelist
[i
],
2051 if (! len
&& check_input_term(state
, desc
->baSourceID
[i
], &iterm
) >= 0)
2052 len
= get_term_name(state
, &iterm
, namelist
[i
], MAX_ITEM_NAME_LEN
, 0);
2054 sprintf(namelist
[i
], "Input %u", i
);
2057 kctl
= snd_ctl_new1(&mixer_selectunit_ctl
, cval
);
2059 usb_audio_err(state
->chip
, "cannot malloc kcontrol\n");
2064 kctl
->private_value
= (unsigned long)namelist
;
2065 kctl
->private_free
= usb_mixer_selector_elem_free
;
2067 nameid
= uac_selector_unit_iSelector(desc
);
2068 len
= check_mapped_name(map
, kctl
->id
.name
, sizeof(kctl
->id
.name
));
2072 snd_usb_copy_string_desc(state
, nameid
, kctl
->id
.name
,
2073 sizeof(kctl
->id
.name
));
2075 len
= get_term_name(state
, &state
->oterm
,
2076 kctl
->id
.name
, sizeof(kctl
->id
.name
), 0);
2078 strlcpy(kctl
->id
.name
, "USB", sizeof(kctl
->id
.name
));
2080 if (desc
->bDescriptorSubtype
== UAC2_CLOCK_SELECTOR
)
2081 append_ctl_name(kctl
, " Clock Source");
2082 else if ((state
->oterm
.type
& 0xff00) == 0x0100)
2083 append_ctl_name(kctl
, " Capture Source");
2085 append_ctl_name(kctl
, " Playback Source");
2088 usb_audio_dbg(state
->chip
, "[%d] SU [%s] items = %d\n",
2089 cval
->head
.id
, kctl
->id
.name
, desc
->bNrInPins
);
2090 return snd_usb_mixer_add_control(&cval
->head
, kctl
);
2094 * parse an audio unit recursively
2097 static int parse_audio_unit(struct mixer_build
*state
, int unitid
)
2101 if (test_and_set_bit(unitid
, state
->unitbitmap
))
2102 return 0; /* the unit already visited */
2104 p1
= find_audio_control_unit(state
, unitid
);
2106 usb_audio_err(state
->chip
, "unit %d not found!\n", unitid
);
2111 case UAC_INPUT_TERMINAL
:
2112 case UAC2_CLOCK_SOURCE
:
2114 case UAC_MIXER_UNIT
:
2115 return parse_audio_mixer_unit(state
, unitid
, p1
);
2116 case UAC_SELECTOR_UNIT
:
2117 case UAC2_CLOCK_SELECTOR
:
2118 return parse_audio_selector_unit(state
, unitid
, p1
);
2119 case UAC_FEATURE_UNIT
:
2120 return parse_audio_feature_unit(state
, unitid
, p1
);
2121 case UAC1_PROCESSING_UNIT
:
2122 /* UAC2_EFFECT_UNIT has the same value */
2123 if (state
->mixer
->protocol
== UAC_VERSION_1
)
2124 return parse_audio_processing_unit(state
, unitid
, p1
);
2126 return 0; /* FIXME - effect units not implemented yet */
2127 case UAC1_EXTENSION_UNIT
:
2128 /* UAC2_PROCESSING_UNIT_V2 has the same value */
2129 if (state
->mixer
->protocol
== UAC_VERSION_1
)
2130 return parse_audio_extension_unit(state
, unitid
, p1
);
2131 else /* UAC_VERSION_2 */
2132 return parse_audio_processing_unit(state
, unitid
, p1
);
2133 case UAC2_EXTENSION_UNIT_V2
:
2134 return parse_audio_extension_unit(state
, unitid
, p1
);
2136 usb_audio_err(state
->chip
,
2137 "unit %u: unexpected type 0x%02x\n", unitid
, p1
[2]);
2142 static void snd_usb_mixer_free(struct usb_mixer_interface
*mixer
)
2144 kfree(mixer
->id_elems
);
2146 kfree(mixer
->urb
->transfer_buffer
);
2147 usb_free_urb(mixer
->urb
);
2149 usb_free_urb(mixer
->rc_urb
);
2150 kfree(mixer
->rc_setup_packet
);
2154 static int snd_usb_mixer_dev_free(struct snd_device
*device
)
2156 struct usb_mixer_interface
*mixer
= device
->device_data
;
2157 snd_usb_mixer_free(mixer
);
2162 * create mixer controls
2164 * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers
2166 static int snd_usb_mixer_controls(struct usb_mixer_interface
*mixer
)
2168 struct mixer_build state
;
2170 const struct usbmix_ctl_map
*map
;
2173 memset(&state
, 0, sizeof(state
));
2174 state
.chip
= mixer
->chip
;
2175 state
.mixer
= mixer
;
2176 state
.buffer
= mixer
->hostif
->extra
;
2177 state
.buflen
= mixer
->hostif
->extralen
;
2179 /* check the mapping table */
2180 for (map
= usbmix_ctl_maps
; map
->id
; map
++) {
2181 if (map
->id
== state
.chip
->usb_id
) {
2182 state
.map
= map
->map
;
2183 state
.selector_map
= map
->selector_map
;
2184 mixer
->ignore_ctl_error
= map
->ignore_ctl_error
;
2190 while ((p
= snd_usb_find_csint_desc(mixer
->hostif
->extra
,
2191 mixer
->hostif
->extralen
,
2192 p
, UAC_OUTPUT_TERMINAL
)) != NULL
) {
2193 if (mixer
->protocol
== UAC_VERSION_1
) {
2194 struct uac1_output_terminal_descriptor
*desc
= p
;
2196 if (desc
->bLength
< sizeof(*desc
))
2197 continue; /* invalid descriptor? */
2198 /* mark terminal ID as visited */
2199 set_bit(desc
->bTerminalID
, state
.unitbitmap
);
2200 state
.oterm
.id
= desc
->bTerminalID
;
2201 state
.oterm
.type
= le16_to_cpu(desc
->wTerminalType
);
2202 state
.oterm
.name
= desc
->iTerminal
;
2203 err
= parse_audio_unit(&state
, desc
->bSourceID
);
2204 if (err
< 0 && err
!= -EINVAL
)
2206 } else { /* UAC_VERSION_2 */
2207 struct uac2_output_terminal_descriptor
*desc
= p
;
2209 if (desc
->bLength
< sizeof(*desc
))
2210 continue; /* invalid descriptor? */
2211 /* mark terminal ID as visited */
2212 set_bit(desc
->bTerminalID
, state
.unitbitmap
);
2213 state
.oterm
.id
= desc
->bTerminalID
;
2214 state
.oterm
.type
= le16_to_cpu(desc
->wTerminalType
);
2215 state
.oterm
.name
= desc
->iTerminal
;
2216 err
= parse_audio_unit(&state
, desc
->bSourceID
);
2217 if (err
< 0 && err
!= -EINVAL
)
2221 * For UAC2, use the same approach to also add the
2224 err
= parse_audio_unit(&state
, desc
->bCSourceID
);
2225 if (err
< 0 && err
!= -EINVAL
)
2233 void snd_usb_mixer_notify_id(struct usb_mixer_interface
*mixer
, int unitid
)
2235 struct usb_mixer_elem_list
*list
;
2237 for (list
= mixer
->id_elems
[unitid
]; list
; list
= list
->next_id_elem
)
2238 snd_ctl_notify(mixer
->chip
->card
, SNDRV_CTL_EVENT_MASK_VALUE
,
2242 static void snd_usb_mixer_dump_cval(struct snd_info_buffer
*buffer
,
2243 struct usb_mixer_elem_list
*list
)
2245 struct usb_mixer_elem_info
*cval
= (struct usb_mixer_elem_info
*)list
;
2246 static char *val_types
[] = {"BOOLEAN", "INV_BOOLEAN",
2247 "S8", "U8", "S16", "U16"};
2248 snd_iprintf(buffer
, " Info: id=%i, control=%i, cmask=0x%x, "
2249 "channels=%i, type=\"%s\"\n", cval
->head
.id
,
2250 cval
->control
, cval
->cmask
, cval
->channels
,
2251 val_types
[cval
->val_type
]);
2252 snd_iprintf(buffer
, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n",
2253 cval
->min
, cval
->max
, cval
->dBmin
, cval
->dBmax
);
2256 static void snd_usb_mixer_proc_read(struct snd_info_entry
*entry
,
2257 struct snd_info_buffer
*buffer
)
2259 struct snd_usb_audio
*chip
= entry
->private_data
;
2260 struct usb_mixer_interface
*mixer
;
2261 struct usb_mixer_elem_list
*list
;
2264 list_for_each_entry(mixer
, &chip
->mixer_list
, list
) {
2266 "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n",
2267 chip
->usb_id
, snd_usb_ctrl_intf(chip
),
2268 mixer
->ignore_ctl_error
);
2269 snd_iprintf(buffer
, "Card: %s\n", chip
->card
->longname
);
2270 for (unitid
= 0; unitid
< MAX_ID_ELEMS
; unitid
++) {
2271 for (list
= mixer
->id_elems
[unitid
]; list
;
2272 list
= list
->next_id_elem
) {
2273 snd_iprintf(buffer
, " Unit: %i\n", list
->id
);
2276 " Control: name=\"%s\", index=%i\n",
2277 list
->kctl
->id
.name
,
2278 list
->kctl
->id
.index
);
2280 list
->dump(buffer
, list
);
2286 static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface
*mixer
,
2287 int attribute
, int value
, int index
)
2289 struct usb_mixer_elem_list
*list
;
2290 __u8 unitid
= (index
>> 8) & 0xff;
2291 __u8 control
= (value
>> 8) & 0xff;
2292 __u8 channel
= value
& 0xff;
2294 if (channel
>= MAX_CHANNELS
) {
2295 usb_audio_dbg(mixer
->chip
,
2296 "%s(): bogus channel number %d\n",
2301 for (list
= mixer
->id_elems
[unitid
]; list
; list
= list
->next_id_elem
) {
2302 struct usb_mixer_elem_info
*info
;
2307 info
= (struct usb_mixer_elem_info
*)list
;
2308 if (info
->control
!= control
)
2311 switch (attribute
) {
2313 /* invalidate cache, so the value is read from the device */
2315 info
->cached
&= ~(1 << channel
);
2316 else /* master channel */
2319 snd_ctl_notify(mixer
->chip
->card
, SNDRV_CTL_EVENT_MASK_VALUE
,
2320 &info
->head
.kctl
->id
);
2332 usb_audio_dbg(mixer
->chip
,
2333 "unknown attribute %d in interrupt\n",
2340 static void snd_usb_mixer_interrupt(struct urb
*urb
)
2342 struct usb_mixer_interface
*mixer
= urb
->context
;
2343 int len
= urb
->actual_length
;
2344 int ustatus
= urb
->status
;
2349 if (mixer
->protocol
== UAC_VERSION_1
) {
2350 struct uac1_status_word
*status
;
2352 for (status
= urb
->transfer_buffer
;
2353 len
>= sizeof(*status
);
2354 len
-= sizeof(*status
), status
++) {
2355 dev_dbg(&urb
->dev
->dev
, "status interrupt: %02x %02x\n",
2356 status
->bStatusType
,
2357 status
->bOriginator
);
2359 /* ignore any notifications not from the control interface */
2360 if ((status
->bStatusType
& UAC1_STATUS_TYPE_ORIG_MASK
) !=
2361 UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF
)
2364 if (status
->bStatusType
& UAC1_STATUS_TYPE_MEM_CHANGED
)
2365 snd_usb_mixer_rc_memory_change(mixer
, status
->bOriginator
);
2367 snd_usb_mixer_notify_id(mixer
, status
->bOriginator
);
2369 } else { /* UAC_VERSION_2 */
2370 struct uac2_interrupt_data_msg
*msg
;
2372 for (msg
= urb
->transfer_buffer
;
2373 len
>= sizeof(*msg
);
2374 len
-= sizeof(*msg
), msg
++) {
2375 /* drop vendor specific and endpoint requests */
2376 if ((msg
->bInfo
& UAC2_INTERRUPT_DATA_MSG_VENDOR
) ||
2377 (msg
->bInfo
& UAC2_INTERRUPT_DATA_MSG_EP
))
2380 snd_usb_mixer_interrupt_v2(mixer
, msg
->bAttribute
,
2381 le16_to_cpu(msg
->wValue
),
2382 le16_to_cpu(msg
->wIndex
));
2387 if (ustatus
!= -ENOENT
&&
2388 ustatus
!= -ECONNRESET
&&
2389 ustatus
!= -ESHUTDOWN
) {
2390 urb
->dev
= mixer
->chip
->dev
;
2391 usb_submit_urb(urb
, GFP_ATOMIC
);
2395 /* create the handler for the optional status interrupt endpoint */
2396 static int snd_usb_mixer_status_create(struct usb_mixer_interface
*mixer
)
2398 struct usb_endpoint_descriptor
*ep
;
2399 void *transfer_buffer
;
2403 /* we need one interrupt input endpoint */
2404 if (get_iface_desc(mixer
->hostif
)->bNumEndpoints
< 1)
2406 ep
= get_endpoint(mixer
->hostif
, 0);
2407 if (!usb_endpoint_dir_in(ep
) || !usb_endpoint_xfer_int(ep
))
2410 epnum
= usb_endpoint_num(ep
);
2411 buffer_length
= le16_to_cpu(ep
->wMaxPacketSize
);
2412 transfer_buffer
= kmalloc(buffer_length
, GFP_KERNEL
);
2413 if (!transfer_buffer
)
2415 mixer
->urb
= usb_alloc_urb(0, GFP_KERNEL
);
2417 kfree(transfer_buffer
);
2420 usb_fill_int_urb(mixer
->urb
, mixer
->chip
->dev
,
2421 usb_rcvintpipe(mixer
->chip
->dev
, epnum
),
2422 transfer_buffer
, buffer_length
,
2423 snd_usb_mixer_interrupt
, mixer
, ep
->bInterval
);
2424 usb_submit_urb(mixer
->urb
, GFP_KERNEL
);
2428 int snd_usb_create_mixer(struct snd_usb_audio
*chip
, int ctrlif
,
2431 static struct snd_device_ops dev_ops
= {
2432 .dev_free
= snd_usb_mixer_dev_free
2434 struct usb_mixer_interface
*mixer
;
2435 struct snd_info_entry
*entry
;
2438 strcpy(chip
->card
->mixername
, "USB Mixer");
2440 mixer
= kzalloc(sizeof(*mixer
), GFP_KERNEL
);
2444 mixer
->ignore_ctl_error
= ignore_error
;
2445 mixer
->id_elems
= kcalloc(MAX_ID_ELEMS
, sizeof(*mixer
->id_elems
),
2447 if (!mixer
->id_elems
) {
2452 mixer
->hostif
= &usb_ifnum_to_if(chip
->dev
, ctrlif
)->altsetting
[0];
2453 switch (get_iface_desc(mixer
->hostif
)->bInterfaceProtocol
) {
2456 mixer
->protocol
= UAC_VERSION_1
;
2459 mixer
->protocol
= UAC_VERSION_2
;
2463 if ((err
= snd_usb_mixer_controls(mixer
)) < 0 ||
2464 (err
= snd_usb_mixer_status_create(mixer
)) < 0)
2467 snd_usb_mixer_apply_create_quirk(mixer
);
2469 err
= snd_device_new(chip
->card
, SNDRV_DEV_CODEC
, mixer
, &dev_ops
);
2473 if (list_empty(&chip
->mixer_list
) &&
2474 !snd_card_proc_new(chip
->card
, "usbmixer", &entry
))
2475 snd_info_set_text_ops(entry
, chip
, snd_usb_mixer_proc_read
);
2477 list_add(&mixer
->list
, &chip
->mixer_list
);
2481 snd_usb_mixer_free(mixer
);
2485 void snd_usb_mixer_disconnect(struct usb_mixer_interface
*mixer
)
2487 usb_kill_urb(mixer
->urb
);
2488 usb_kill_urb(mixer
->rc_urb
);
2492 /* stop any bus activity of a mixer */
2493 static void snd_usb_mixer_inactivate(struct usb_mixer_interface
*mixer
)
2495 usb_kill_urb(mixer
->urb
);
2496 usb_kill_urb(mixer
->rc_urb
);
2499 static int snd_usb_mixer_activate(struct usb_mixer_interface
*mixer
)
2504 err
= usb_submit_urb(mixer
->urb
, GFP_NOIO
);
2512 int snd_usb_mixer_suspend(struct usb_mixer_interface
*mixer
)
2514 snd_usb_mixer_inactivate(mixer
);
2518 static int restore_mixer_value(struct usb_mixer_elem_list
*list
)
2520 struct usb_mixer_elem_info
*cval
= (struct usb_mixer_elem_info
*)list
;
2525 for (c
= 0; c
< MAX_CHANNELS
; c
++) {
2526 if (!(cval
->cmask
& (1 << c
)))
2528 if (cval
->cached
& (1 << c
)) {
2529 err
= snd_usb_set_cur_mix_value(cval
, c
+ 1, idx
,
2530 cval
->cache_val
[idx
]);
2539 err
= snd_usb_set_cur_mix_value(cval
, 0, 0, *cval
->cache_val
);
2548 int snd_usb_mixer_resume(struct usb_mixer_interface
*mixer
, bool reset_resume
)
2550 struct usb_mixer_elem_list
*list
;
2554 /* restore cached mixer values */
2555 for (id
= 0; id
< MAX_ID_ELEMS
; id
++) {
2556 for (list
= mixer
->id_elems
[id
]; list
;
2557 list
= list
->next_id_elem
) {
2559 err
= list
->resume(list
);
2567 return snd_usb_mixer_activate(mixer
);
2571 void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list
*list
,
2572 struct usb_mixer_interface
*mixer
,
2575 list
->mixer
= mixer
;
2577 list
->dump
= snd_usb_mixer_dump_cval
;
2579 list
->resume
= restore_mixer_value
;