/*****************************************************************
** parint.h - header file for parint device driver
******************************************************************
*/

#ifndef _PARINT_H
#define _PARINT_H

// ioctl() cmd defines
#define PARINT_IOCTL_GET_TIME              1 // get time data
#define PARINT_IOCTL_FLUSH                 2 // waits for data.
#define PARINT_IOCTL_PULSE                 3 // toggle output bit (test/debug function).
#define PARINT_IOCTL_ONESHOT_CLEAR         4 // clear one shot data.
#define PARINT_IOCTL_ONESHOT_GET           5 // retrieve one shot data.
#define PARINT_IOCTL_T1                    6 // debug/test function
#define PARINT_IOCTL_T2                    7 // debug/test function

/*------------------------------------------------------------
** parint_parms_t - a general structure used to pass arguments
**               & return values to the ioctl() call.
**------------------------------------------------------------
*/
struct parint_parms_t
{
   int ret;             /* return code    */
   unsigned long l[4];  /* array of longs */
   void *        p[4];  /* pointers */
};

//-----------------------------------------------------
// nice prototypes
//----------------------------------------------------

int parint_get_time( int fd, unsigned int * i_cnt, int * num_ret, struct timeval * tv, int max_tv );
int parint_flush( int fd );
int parint_oneshot_clear( int fd );
int parint_oneshot_get( int fd, int * has_data, struct timeval * tv );

int parint_pulse( int fd, struct timeval * tv);
int parint_t1( int fd );
int parint_t2( int fd, unsigned char *uc );

#endif  // _PARINT_H