SOUND_MIXER_VOLUME
{ AudioNmaster, SOUND_MIXER_VOLUME },
#define SOUND_MIXER_READ_VOLUME MIXER_READ(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_WRITE_VOLUME MIXER_WRITE(SOUND_MIXER_VOLUME)
#define SOUND_MASK_VOLUME (1 << SOUND_MIXER_VOLUME)
SOUND_MIXER_VOLUME, 0);
SOUND_MIXER_VOLUME,
SOUND_MIXER_VOLUME)