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-rw-r--r--include/sound/control.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/sound/control.h b/include/sound/control.h
index e79baa6..3dc1291 100644
--- a/include/sound/control.h
+++ b/include/sound/control.h
@@ -169,4 +169,11 @@ int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
+/*
+ * virtual master control
+ */
+struct snd_kcontrol *snd_ctl_make_virtual_master(char *name,
+ const unsigned int *tlv);
+int snd_ctl_add_slave(struct snd_kcontrol *master, struct snd_kcontrol *slave);
+
#endif /* __SOUND_CONTROL_H */
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