The E1 has two headphone jacks, one of which can be set as a microphone input. In the default mode, it uses the built-in microphone as an input. By sending a special command, the second headphone jack is instead used as an input.

This might work with the E3 as well, but I don't have one of those to test it.

Signed-off-by: Ian Douglas Scott ian@iandouglasscott.com --- sound/usb/mixer_quirks.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index e1e7ce9ab217..e6359d341878 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -27,6 +27,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */

+#include <linux/hid.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/usb.h> @@ -1721,6 +1722,83 @@ static int snd_microii_controls_create(struct usb_mixer_interface *mixer) return 0; }

+/* Creative Sound Blaster E1 */ + +static int snd_soundblaster_e1_switch_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = kcontrol->private_value; + return 0; +} + +static int snd_soundblaster_e1_switch_update(struct usb_mixer_interface *mixer, + unsigned char state) +{ + struct snd_usb_audio *chip = mixer->chip; + int err; + unsigned char buff[2]; + + buff[0] = 0x02; + buff[1] = state ? 0x02 : 0x00; + + err = snd_usb_lock_shutdown(chip); + if (err < 0) + return err; + err = snd_usb_ctl_msg(chip->dev, + usb_sndctrlpipe(chip->dev, 0), HID_REQ_SET_REPORT, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, + 0x0202, 3, buff, 2); + snd_usb_unlock_shutdown(chip); + return err; +} + +static int snd_soundblaster_e1_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol); + unsigned char value = !!ucontrol->value.integer.value[0]; + int err; + + if (kcontrol->private_value == value) + return 0; + kcontrol->private_value = value; + err = snd_soundblaster_e1_switch_update(list->mixer, value); + return err < 0 ? err : 1; +} + +static int snd_soundblaster_e1_switch_resume(struct usb_mixer_elem_list *list) +{ + return snd_soundblaster_e1_switch_update(list->mixer, + list->kctl->private_value); +} + +static int snd_soundblaster_e1_switch_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static const char *const texts[2] = { + "Mic", "Aux" + }; + + return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(texts), texts); +} + +static struct snd_kcontrol_new snd_soundblaster_e1_input_switch = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Input Source", + .info = snd_soundblaster_e1_switch_info, + .get = snd_soundblaster_e1_switch_get, + .put = snd_soundblaster_e1_switch_put, + .private_value = 0, +}; + +static int snd_soundblaster_e1_switch_create(struct usb_mixer_interface *mixer) +{ + return add_single_ctl_with_resume(mixer, 0, + snd_soundblaster_e1_switch_resume, + &snd_soundblaster_e1_input_switch, + NULL); +} + int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer) { int err = 0; @@ -1802,6 +1880,10 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer) case USB_ID(0x1235, 0x800c): /* Focusrite Scarlett 18i20 */ err = snd_scarlett_controls_create(mixer); break; + + case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */ + err = snd_soundblaster_e1_switch_create(mixer); + break; }

return err;