/* * spkr.h -- interface definitions for speaker ioctl() * * $Id: spkr.h,v 1.2 1994/01/11 13:30:40 mycroft Exp $ */ #ifndef _I386_SPKR_H_ #define _I386_SPKR_H_ #include #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 /* _I386_SPKR_H_ */