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;
}