Symbol: CTL_PAN
include/uapi/linux/soundcard.h
1223
#define SEQ_PANNING(dev, voice, pos) SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
sound/core/seq/oss/seq_oss_event.c
145
q->e.chn, CTL_PAN, val, ev);