1 files changed, 10 insertions, 1 deletions

diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
index 459551ac53ae..ae1a14dcfe82 100644
--- a/sound/usb/mixer.h
+++ b/sound/usb/mixer.h
@@ -24,7 +24,16 @@ struct usb_mixer_interface {
         u8 xonar_u1_status;
 };
 
-#define MAX_CHANNELS    10      /* max logical channels */
+#define MAX_CHANNELS    16      /* max logical channels */
+
+enum {
+        USB_MIXER_BOOLEAN,
+        USB_MIXER_INV_BOOLEAN,
+        USB_MIXER_S8,
+        USB_MIXER_U8,
+        USB_MIXER_S16,
+        USB_MIXER_U16,
+};
 
 struct usb_mixer_elem_info {
         struct usb_mixer_interface *mixer;