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authorVasily Khoruzhick <anarsoul@gmail.com>2013-11-13 13:13:35 +0300
committerTakashi Iwai <tiwai@suse.de>2013-11-13 17:05:20 +0100
commit44832a71f377d9eae1d97afedad4d0d6d51fc485 (patch)
tree2f699268a072a200a62e32a2cc80303d40b309f3 /sound/usb/mixer_quirks.c
parentd183b4fc463489b6bbe05c99afa0257a6fe578eb (diff)
ALSA: usb-audio: add front jack channel selector for EMU0204
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>
Diffstat (limited to 'sound/usb/mixer_quirks.c')
-rw-r--r--sound/usb/mixer_quirks.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index d42a584cf829..3454262358b3 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -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);