/* * spkr.h -- interface definitions for speaker ioctl() * * v1.1 by Eric S. Raymond (esr@snark.thyrsus.com) Feb 1990 * modified for 386bsd by Andrew A. Chernov * 386bsd only clean version, all SYSV stuff removed */ #ifndef _SPKR_H_ #define _SPKR_H_ #ifndef KERNEL #include #else #include "ioctl.h" #endif #define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */ #define SPKRTUNE _IO('S', 2) /* emit tone sequence*/ typedef struct { int frequency; /* in hertz */ int duration; /* in 1/100ths of a second */ } tone_t; #endif /* _SPKR_H_ */ /* spkr.h ends here */