At Wed, 13 Nov 2013 13:13:35 +0300, Vasily Khoruzhick wrote:
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
Thanks, applied.
Takashi
v2: - pass constants for bRequest and bRequestType into snd_usb_ctl_msg() - implement control as an enum instead of a switch. v3: - Fix declared array size - Add sanity check for a passed value to snd_emu0204_ch_switch_put()
sound/usb/mixer_quirks.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+)
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index d42a584..3454262 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);
-- 1.8.4.2