kbd.h

最常用的嵌入式LINUX字符设备驱动：触摸屏和小键盘驱动。触摸屏使用SPI接口

// the header file is used by Mykey.c and smallkbd.c

#ifndef __KBD_
#define __KBD_

#ifndef MAX_KEY_COUNT
	#define MAX_KEY_COUNT 1024  // size of keyboard buffer
#endif

// port
#define PMDIR (*((volatile unsigned char*)0xfffff448))  // Port M direction register
#define PMDATA (*((volatile unsigned char*)0xfffff449)) // Port M data register
#define PMPUEN (*((volatile unsigned char*)0xfffff44a)) // Port M pull-up register
#define PMSEL (*((volatile unsigned char*)0xfffff44b))  // Port M select register

#define SMALLKBD_MAJOR	100		// device id
#define SMALLKBD_DELAY	20		// scan small keyboard interval(ms)
#define SMALLKBD_KEYNUM	9		// small keyboard key number
#define SMALLKBD_ENABLE	1		// enable small keyboard
#define SMALLKBD_DISABLE 0		// disable small keyboard

// ioctl command
#define SMALLKBD_EN_DIS	0
#define SMALLKBD_KEY1	1
#define SMALLKBD_KEY2	2
#define SMALLKBD_KEY3	3
#define SMALLKBD_KEY4	4
#define SMALLKBD_KEY5	5
#define SMALLKBD_KEY6	6
#define SMALLKBD_KEY7	7
#define SMALLKBD_KEY8	8
#define SMALLKBD_KEY9	9

// AT scan code
#define UNDEFINE 0
#define HOME     102
#define UP       103
#define PAGEUP   104
#define LEFT     105
#define RIGHT    106
#define END      107
#define DOWN     108
#define PAGEDOWN 109

#endif