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ALSA: usb-audio: add front jack channel selector for EMU0204

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Add support for front jack channel selector which is present on EMU0204.
It allows to get 4 channels out of this soundcard.

Tested-by: Yury Bushmelev <jay@jay-tech.ru>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Vasily Khoruzhick 2013-11-13 13:13:35 +03:00 committed by Takashi Iwai
parent d183b4fc46
commit 44832a71f3
1 changed files with 90 additions and 0 deletions
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90
sound/usb/mixer_quirks.c
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@ -433,6 +433,89 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
}
}
/* EMU0204 */
static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char *texts[2] = {"1/2",
"3/4"
};
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
uinfo->value.enumerated.items = 2;
if (uinfo->value.enumerated.item > 1)
uinfo->value.enumerated.item = 1;
strcpy(uinfo->value.enumerated.name,
texts[uinfo->value.enumerated.item]);
return 0;
}
static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.enumerated.item[0] = kcontrol->private_value;
return 0;
}
static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
unsigned int value = ucontrol->value.enumerated.item[0];
int err, changed;
unsigned char buf[2];
if (value > 1)
return -EINVAL;
buf[0] = 0x01;
buf[1] = value ? 0x02 : 0x01;
changed = value != kcontrol->private_value;
down_read(&mixer->chip->shutdown_rwsem);
if (mixer->chip->shutdown) {
err = -ENODEV;
goto out;
}
err = snd_usb_ctl_msg(mixer->chip->dev,
usb_sndctrlpipe(mixer->chip->dev, 0), UAC_SET_CUR,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
0x0400, 0x0e00, buf, 2);
out:
up_read(&mixer->chip->shutdown_rwsem);
if (err < 0)
return err;
kcontrol->private_value = value;
return changed;
}
static struct snd_kcontrol_new snd_emu0204_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Front Jack Channels",
.info = snd_emu0204_ch_switch_info,
.get = snd_emu0204_ch_switch_get,
.put = snd_emu0204_ch_switch_put,
.private_value = 0,
},
};
static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
{
int i, err;
for (i = 0; i < ARRAY_SIZE(snd_emu0204_controls); ++i) {
err = snd_ctl_add(mixer->chip->card,
snd_ctl_new1(&snd_emu0204_controls[i], mixer));
if (err < 0)
return err;
}
return 0;
}
/* ASUS Xonar U1 / U3 controls */
static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
@ -1545,6 +1628,13 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
snd_audigy2nx_proc_read);
break;
/* EMU0204 */
case USB_ID(0x041e, 0x3f19):
err = snd_emu0204_controls_create(mixer);
if (err < 0)
break;
break;
case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */
err = snd_c400_create_mixer(mixer);