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ALSA: snd-usb-audio: Replace mixer for Electrix Ebox-44

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The mixer units from the firmware are corrupt, and even where they
are valid they presents mono controls as L and R channels of
stereo.

Signed-off-by: Mark Hills <mark@pogo.org.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mark Hills 2012-04-14 17:19:24 +01:00 committed by Takashi Iwai
parent 284a8dd6f0
commit 7536c301f8
2 changed files with 80 additions and 0 deletions
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13
sound/usb/mixer_maps.c
View File

@ -288,6 +288,15 @@ static struct usbmix_name_map scratch_live_map[] = {
{ 0 } /* terminator */
};
static struct usbmix_name_map ebox44_map[] = {
{ 4, NULL }, /* FU */
{ 6, NULL }, /* MU */
{ 7, NULL }, /* FU */
{ 10, NULL }, /* FU */
{ 11, NULL }, /* MU */
{ 0 }
};
/* "Gamesurround Muse Pocket LT" looks same like "Sound Blaster MP3+"
* most importand difference is SU[8], it should be set to "Capture Source"
* to make alsamixer and PA working properly.
@ -371,6 +380,10 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
.map = scratch_live_map,
.ignore_ctl_error = 1,
},
{
.id = USB_ID(0x200c, 0x1018),
.map = ebox44_map,
},
{ 0 } /* terminator */
};

67
sound/usb/mixer_quirks.c
View File

@ -557,6 +557,69 @@ static int snd_maudio_ftu_create_mixer(struct usb_mixer_interface *mixer)
return 0;
}
static int snd_ebox44_create_ctl(struct usb_mixer_interface *mixer,
int unitid, int control, int cmask,
int val_type, const char *name)
{
struct usb_mixer_elem_info *cval;
struct snd_kcontrol *kctl;
cval = kzalloc(sizeof(*cval), GFP_KERNEL);
if (!cval)
return -ENOMEM;
cval->id = unitid;
cval->mixer = mixer;
cval->val_type = val_type;
cval->channels = 1;
cval->control = control;
cval->cmask = cmask;
/* Volume controls will override these values */
cval->min = 0;
cval->max = 1;
cval->res = 0;
cval->dBmin = 0;
cval->dBmax = 0;
kctl = snd_ctl_new1(snd_usb_feature_unit_ctl, cval);
if (!kctl) {
kfree(cval);
return -ENOMEM;
}
snprintf(kctl->id.name, sizeof(kctl->id.name), name);
kctl->private_free = usb_mixer_elem_free;
return snd_usb_mixer_add_control(mixer, kctl);
}
/*
* Create mixer for Electrix Ebox-44
*
* The mixer units from this device are corrupt, and even where they
* are valid they presents mono controls as L and R channels of
* stereo. So we create a good mixer in code.
*/
static int snd_ebox44_create_mixer(struct usb_mixer_interface *mixer)
{
snd_ebox44_create_ctl(mixer, 4, 1, 0x0, USB_MIXER_INV_BOOLEAN, "Headphone Playback Switch");
snd_ebox44_create_ctl(mixer, 4, 2, 0x1, USB_MIXER_S16, "Headphone A Mix Playback Volume");
snd_ebox44_create_ctl(mixer, 4, 2, 0x2, USB_MIXER_S16, "Headphone B Mix Playback Volume");
snd_ebox44_create_ctl(mixer, 7, 1, 0x0, USB_MIXER_INV_BOOLEAN, "Output Playback Switch");
snd_ebox44_create_ctl(mixer, 7, 2, 0x1, USB_MIXER_S16, "Output A Playback Volume");
snd_ebox44_create_ctl(mixer, 7, 2, 0x2, USB_MIXER_S16, "Output B Playback Volume");
snd_ebox44_create_ctl(mixer, 10, 1, 0x0, USB_MIXER_INV_BOOLEAN, "Input Capture Switch");
snd_ebox44_create_ctl(mixer, 10, 2, 0x1, USB_MIXER_S16, "Input A Capture Volume");
snd_ebox44_create_ctl(mixer, 10, 2, 0x2, USB_MIXER_S16, "Input B Capture Volume");
return 0;
}
void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
unsigned char samplerate_id)
{
@ -619,6 +682,10 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
snd_nativeinstruments_ta10_mixers,
ARRAY_SIZE(snd_nativeinstruments_ta10_mixers));
break;
case USB_ID(0x200c, 0x1018): /* Electrix Ebox-44 */
err = snd_ebox44_create_mixer(mixer);
break;
}
return err;