Linux/AM3358: aerial touchscreen

Tool/software: Linux

MCU:AM3358   + SDK6.0

I want how can I drive one serial touchscreen . Refered some documents, I changed the data frame of toucgit213.c and write one code which working in userspace.

 Just like this :

1. #define SERIO_ANY   0xff  
2. #define SERIO_MD    0x3f  
3.   
4. int main(int argc, char* argv[])  
5. {  
6.     int dev,ret;  
7.     char comdev[20];  
8.     int ldisc;  
9.     unsigned long type;  
10.     struct termios option;  
11.     int fd = -1;  
12.     if(argc != 2)  
13.     {  
14.         printf("-----------------------------------------\n");  
15.         printf("\nUsage: %s [serial device(1-5)]\n", argv[0]);  
16.         printf("Example: %s 5 n", argv[0]);  
17.         printf("-----------------------------------------\n");  
18.         return 0;  
19.     }  
20.   
21.     dev = strtol(argv[1],NULL,10);  
22.     sprintf(comdev,"/dev/ttyAMA%d",dev);  
23.     fd = open(comdev,O_RDWR|O_NONBLOCK|O_NOCTTY);  
24.     if (fd < 0) {  
25.         perror(comdev);  
26.         exit(1);  
27.     }  
28.       
29.     tcgetattr(fd, &option);  
30.     option.c_iflag = IGNPAR | IGNBRK;  
31.     option.c_cflag = HUPCL | CS8 | CREAD | CLOCAL | B9600;  
32.     option.c_cc[VMIN] = 1;  
33.     option.c_cc[VTIME] = 0;  
34.       
35.     cfsetispeed(&option,B9600);  
36.     cfsetospeed(&option,B9600);  
37.   
38.     ret = tcsetattr(fd, TCSANOW, &option);  
39.     if(ret < 0) {  
40.         perror("TCSANOW");  
41.         exit(1);  
42.     }  
43.   
44.     ldisc = N_MOUSE;  
45.     ret = ioctl(fd,TIOCSETD,&ldisc);  
46.     if(ret) {  
47.         perror("TIOCSETD");  
48.     }  
49.     type = SERIO_MD | (SERIO_ANY << 8) | (SERIO_ANY << 16);  
50.     ret = ioctl(fd,SPIOCSTYPE, &type);  
51.     if(ret) {  
52.         perror("SPIOCSTYPE");  
53.     }  
54.     read(fd,NULL,0);  
55.     //close(fd);  
56.     return 0;  
57. }  

But the return ioctl(fd, TIOCSETD,&ldisc) and ioctl(fd, SPIOCSTYPE,&type) all is -1.

Please suppport me as soon sa possible! Thankyou!