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spkr.h revision 1.1 
      1 /*
      2  * spkr.h -- interface definitions for speaker ioctl()
      3  *
      4  * v1.1 by Eric S. Raymond (esr (at) snark.thyrsus.com) Feb 1990
      5  *      modified for 386bsd by Andrew A. Chernov <ache (at) astral.msk.su>
      6  *      386bsd only clean version, all SYSV stuff removed
      7  *
      8  *	$Id: spkr.h,v 1.1 1993/06/16 18:12:23 brezak Exp $
      9  */
     10 
     11 #ifndef _SPKR_H_
     12 #define _SPKR_H_
     13 
     14 #ifndef KERNEL
     15 #include <sys/ioctl.h>
     16 #else
     17 #include "ioctl.h"
     18 #endif
     19 
     20 #define SPKRTONE        _IOW('S', 1, tone_t)    /* emit tone */
     21 #define SPKRTUNE        _IO('S', 2)             /* emit tone sequence*/
     22 
     23 typedef struct
     24 {
     25     int	frequency;	/* in hertz */
     26     int duration;	/* in 1/100ths of a second */
     27 }
     28 tone_t;
     29 
     30 #endif /* _SPKR_H_ */
     31 /* spkr.h ends here */
     32