static irqreturn_t pm_interrupt(struct serio *serio,

  unsigned char data, unsigned int flags)

{

 struct pm *pm = serio_get_drvdata(serio);

 struct input_dev *dev = pm->dev;

 pm->data[pm->idx] = data;

 if (pm->data[0] & 0x80) {

  if (PM_MAX_LENGTH == ++pm->idx) {

   //input_report_abs(dev, ABS_X, pm->data[2] * 128 + pm->data[1]);

   //input_report_abs(dev, ABS_Y, pm->data[4] * 128 + pm->data[3]);

   input_report_abs(dev, ABS_Y, pm->data[1] * 128 + pm->data[2]);

   input_report_abs(dev, ABS_X, pm->data[3] * 128 + pm->data[4]);

   input_report_key(dev, BTN_TOUCH, !!(pm->data[0] & 0x40));

   input_sync(dev);

   pm->idx = 0;

  }

 }

 return IRQ_HANDLED;

}

在驱动中如做上修改。

并在应用中加入如下文件：

/**************************************

Copyright: 2013, Tkai

File name: penmount_init.c

Description: 将串口属性由TTY改为M_MOUSE

Author: 陆晓来

Version: v1.0

Date: 2013.3.15

History: 无

**************************************/

#include "stdio.h"

#include "stdlib.h"

#include "sys/ioctl.h"

#include "sys/stat.h"

#include "unistd.h"

#include "fcntl.h"

#include "termios.h"

#include "errno.h"

#include "/opt/OMAP3530/linux-03.00.01.06/include/linux/tty.h"  //根据内核目录修改

#include "/opt/OMAP3530/linux-03.00.01.06/include/linux/serio.h"//根据内核目录修改

#define SERIO_ANY 0xff

#define device "/dev/ttyS0"    //根据实际使用串口资源修改

/*************************************************

Function: setLine()

Description: 设置串口参数

Calls: NULL

Called By: main()

Input: fd->串口文件操作符，flags->数据位数,speed->波特率

Output: NULL

Return: void

Others: NULL

*************************************************/

static void setLine(int fd, int flags, int speed)

{

 struct termios t;

 tcgetattr(fd, &t);

 t.c_cflag = flags | CREAD | HUPCL | CLOCAL;

 t.c_iflag = IGNBRK | IGNPAR;

 t.c_oflag = 0;

 t.c_lflag = 0;

 t.c_cc[VMIN ] = 1;

 t.c_cc[VTIME] = 0;

 cfsetispeed(&t, speed);

 cfsetospeed(&t, speed);

 tcsetattr(fd, TCSANOW, &t);

}

/*************************************************

Function: main()

Description: 主函数，打开串口设置参数并改变属性

Calls: setLine（）

Called By: NULL

Input: void

Output: NULL

Return: 执行成功返回整数0，其它返回-1

Others: NULL

*************************************************/

int main(void)

{

 int fd;

 fd = open(device, O_RDWR | O_NOCTTY | O_NONBLOCK);

 if (fd < 0)

 {

  fprintf(stderr, "inputattach: '%s' - %s\n",

   device, strerror(errno));

  return -1;

 }

 setLine(fd, CS8, B9600);

 int ldisc = N_MOUSE;

 if (ioctl(fd, TIOCSETD, &ldisc))

 {

  fprintf(stderr, "inputattach: can't set line discipline\n");

  return -1;

 }

 unsigned long devt = SERIO_PENMOUNT|(SERIO_ANY << 8)|(SERIO_ANY << 16);

 if (ioctl(fd, SPIOCSTYPE, &devt))

 {

  fprintf(stderr, "inputattach: can't set device type\n");

  return -1;

 }

 read(fd,NULL,0);

 return 0; 

}