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

#ifndef _PARINT_H
#define _PARINT_H

// ioctl() cmd defines
#define PARINT_IOCTL_GET_TIME              (1001) // get time data
#define PARINT_IOCTL_FLUSH_FIFO            (1002) // waits for data.
#define PARINT_IOCTL_PULSE                 (1003) // toggle output bit (test/debug function).
#define PARINT_IOCTL_ONESHOT_CLEAR         (1004) // clear one shot data.
#define PARINT_IOCTL_ONESHOT_GET           (1005) // retrieve one shot data.
#define PARINT_IOCTL_FLUSH_ALL             (1006) // FLUSE_FIFO and ONE_SHOT_CLEAR
#define PARINT_IOCTL_READ_REGS             (1007) // read register values.
#define PARINT_IOCTL_WRITE_REG_DATA        (1008) // write to the data register
#define PARINT_IOCTL_T1                    (1010) // debug/test function
#define PARINT_IOCTL_T2                    (1011) // 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_fifo( int fd );
int parint_oneshot_clear( int fd );
int parint_oneshot_get( int fd, int * has_data, struct timeval * tv );
int parint_flush_all( int fd );
int parint_read_regs( int fd,  unsigned char *data, unsigned char *status, unsigned char *cntl );
int parint_write_reg_data( int fd, unsigned char data );

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

#endif  // _PARINT_H