SOUND_MIXER_LINE1  833 include/uapi/linux/soundcard.h #define SOUND_MASK_LINE1	(1 << SOUND_MIXER_LINE1)
SOUND_MIXER_LINE1  865 include/uapi/linux/soundcard.h #define SOUND_MIXER_READ_LINE1		MIXER_READ(SOUND_MIXER_LINE1)
SOUND_MIXER_LINE1  895 include/uapi/linux/soundcard.h #define SOUND_MIXER_WRITE_LINE1		MIXER_WRITE(SOUND_MIXER_LINE1)