HelenOS sources

SB_MIXER_NONE      97 uspace/drv/audio/sb16/mixer.c 	[SB_MIXER_NONE] = { NULL, 0 },
SB_MIXER_NONE     116 uspace/drv/audio/sb16/mixer.c 		[SB_MIXER_NONE] = "No mixer",
SB_MIXER_NONE     133 uspace/drv/audio/sb16/mixer.c 	if (type != SB_MIXER_NONE) {
SB_MIXER_NONE      66 uspace/drv/audio/sb16/sb16.c 		return SB_MIXER_NONE; /* SB 1.5 and early 2.0 = no mixer chip */
SB_MIXER_NONE      68 uspace/drv/audio/sb16/sb16.c 		return (minor == 0) ? SB_MIXER_NONE : SB_MIXER_CT1335;