#ifndef __DRIVER_H__
#define __DRIVER_H__

#include <stdarg.h>

struct driver;

typedef int (*fp_open_t)(const struct driver *);
typedef int (*fp_close_t)(const struct driver *);
typedef int (*fp_read_t)(const struct driver *, char *, unsigned int);
typedef int (*fp_write_t)(const struct driver *, const char *, unsigned int);
typedef int (*fp_ioctl_t)(const struct driver *, unsigned int, unsigned int argc, va_list);

struct driver_fp {
    fp_open_t   open;
    fp_close_t  close;
    fp_read_t   read;
    fp_write_t  write;
    fp_ioctl_t  ioctl;
};

struct driver {
    const char *name;
    const struct driver_fp *fp;
    const void *dev;
};

int drv_open(const struct driver *drv);
int drv_close(const struct driver *drv);
int drv_read(const struct driver *drv, char *buffer, unsigned int length);
int drv_write(const struct driver *drv, const char *buffer, unsigned int length);
int drv_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, ...);

#endif