/*
 * File Name : vidioctl.h
 *
 * Header file included for use by the application
 * or any test program in order to make custom ioctl calls.
 * 
 * Work done for final project, Course: CIS5930
 * Course Name: Linux Kernel Programming & Device Driver Programming
 * Written by: Veena Adityan and Arthi Gokarn.
 * Submitted to: Dr. Baker
 * Date: 06/20/2003
 * Copyright 2003 
 */

#ifndef _VIDIOCTL_H
#define _VIDIOCTL_H
/*
 * Structure for returning one pixel. Used for READ_PIXEL ioctl
 */
struct pixel{
  unsigned char x;
  unsigned char y;
};

/*
 * Structure for address and value pair.
 * Used in POKEB ioctl to send a register address,
 * and receive a value at that address
 * TODO: Check for validity.
 */
struct addvalpair{
	unsigned long address;
	unsigned char value;
};

/* The magic numner */
#define PIXELSMART_IOC_MAGIC  'P'
/* Define macros for the various custom ioctls */
#define VIDIOC_PEEKB		    _IOR(PIXELSMART_IOC_MAGIC,  1, unsigned int )
#define VIDIOC_POKEB		    _IOW(PIXELSMART_IOC_MAGIC,   2, struct addvalpair)
#define VIDIOC_FIND_BASEADR     _IOR(PIXELSMART_IOC_MAGIC, 3, unsigned long)
#define VIDIOC_INITCARD         _IO(PIXELSMART_IOC_MAGIC, 4)
#define VIDIOC_FREEZE_IMM       _IOW(PIXELSMART_IOC_MAGIC, 5, unsigned long)
#define VIDIOC_FREEZE		    _IOW(PIXELSMART_IOC_MAGIC,   6, unsigned long)
#define VIDIOC_LIVE		        _IOW(PIXELSMART_IOC_MAGIC,7, unsigned long)
#define VIDIOC_READ_PIXEL       _IOW(PIXELSMART_IOC_MAGIC,8, struct pixel)
#define VIDIOC_READ_IMAGE       _IOR(PIXELSMART_IOC_MAGIC,9, char *)

#endif //_VIDIOCTL_H