SOUND_MIXER_NONE  791 include/uapi/linux/soundcard.h #define SOUND_MIXER_ENHANCE	SOUND_MIXER_NONE
SOUND_MIXER_NONE  792 include/uapi/linux/soundcard.h #define SOUND_MIXER_MUTE	SOUND_MIXER_NONE
SOUND_MIXER_NONE  793 include/uapi/linux/soundcard.h #define SOUND_MIXER_LOUD	SOUND_MIXER_NONE