taglinefilesource code
SOUND_MIXER_SPEAKER94drivers/sound/ad1848_mixer.hMIX_ENT(SOUND_MIXER_SPEAKER,  26, 1, 0, 4,   0, 0, 0, 0),
SOUND_MIXER_SPEAKER176drivers/sound/pas2_mixer.ccase SOUND_MIXER_SPEAKER:  /* PC speaker (0-31) */
SOUND_MIXER_SPEAKER126drivers/sound/sb_mixer.hMIX_ENT(SOUND_MIXER_SPEAKER,  0x00, 0, 0, 0x00, 0, 0),
SOUND_MIXER_SPEAKER142drivers/sound/sb_mixer.hMIX_ENT(SOUND_MIXER_SPEAKER,  0x42, 2, 3, 0x00, 0, 0),
SOUND_MIXER_SPEAKER160drivers/sound/sb_mixer.hMIX_ENT(SOUND_MIXER_SPEAKER,  0x3b, 7, 2, 0x00, 0, 0),
SOUND_MIXER_SPEAKER727include/linux/soundcard.h#define SOUND_MASK_SPEAKER  (1 << SOUND_MIXER_SPEAKER)
SOUND_MIXER_SPEAKER750include/linux/soundcard.h#define SOUND_MIXER_READ_SPEAKER  MIXER_READ(SOUND_MIXER_SPEAKER)
SOUND_MIXER_SPEAKER778include/linux/soundcard.h#define SOUND_MIXER_WRITE_SPEAKER  MIXER_WRITE(SOUND_MIXER_SPEAKER)