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mini2440按键驱动
mini2440按键驱动,static const struct file_operations button_s3c2440={
.owner =THIS_MODULE,
.open =lg_button_open,
.read =lg_button_read,
.poll =lg_button_poll,
.release =lg_button_close;
}
static __init int init_button_lg()
{
int ret;
if(ret=register_chrdev(0,DEVICE_NAME,≶_button)<0)
{
printk(DEVICE_NAME"can`t register\n");
return ret;
}
Return ret;
}
static __exit void exit_button_lg()
{
unregister_chrdev(0,DEVICE_NAME);
}
module_init(init_button_lg);
module_exit(exit_button_lg)
2012-09-06
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