SOUND_MIXER_LINE 825 include/uapi/linux/soundcard.h #define SOUND_MASK_LINE (1 << SOUND_MIXER_LINE) SOUND_MIXER_LINE 857 include/uapi/linux/soundcard.h #define SOUND_MIXER_READ_LINE MIXER_READ(SOUND_MIXER_LINE) SOUND_MIXER_LINE 887 include/uapi/linux/soundcard.h #define SOUND_MIXER_WRITE_LINE MIXER_WRITE(SOUND_MIXER_LINE) SOUND_MIXER_LINE 1270 sound/core/oss/mixer_oss.c { SOUND_MIXER_LINE, "Line", 0 },