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linux uinput
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Ê×ÏÈ uinput ÊÇÒ»¸ö×Ö·ûÉ豸£¬ Æä´ÎËü»¹ÊÇÒ»¸ö input É豸¡£ÁíÍâËü¿ÉÒÔÊÇÒ»¸öÊó±ê»òÕß¼üÅÌÉ豸¡£
´Ó init ²¿·Ö˵Æð°É¡£
static const struct file_operations uinput_fops = {
.owner = THIS_MODULE,
.open = uinput_open,
.release = uinput_release,
.read = uinput_read,
.write = uinput_write,
.poll = uinput_poll,
.unlocked_ioctl = uinput_ioctl,
};
static struct miscdevice uinput_misc = {
.fops = &uinput_fops,
.minor = UINPUT_MINOR,
.name = UINPUT_NAME,
};
static int __init uinput_init(void)
{
return misc_register(&uinput_misc);
}
Ê×ÏÈ˵˵ miscdevice, ºÜ·½±ãµÄ¶«Î÷£¬¶Ô device ×öÁ˼òµ¥µÄ°ü×°£¬
µ± misc_register µÄʱºò¾ÍÍê³ÉÁË É豸µÄ ×¢²á°²×°Ò»ÀàµÄ¶«¶«£¬ ²»ÓÃ×Ô¼ºÔÙ²ÙÐÄÁË¡£ÕæÊÇÀÁÈ˵ÄÉè¼Æ°¢¡£
ËùÓÐµÄ misc É豸¹«ÓÃͬһ¸öÖ÷É豸ºÅ£¬ÔÚ misc_init ÖУ¬
static int __init misc_init(void)
{
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *ent;
ent = create_proc_entry("misc", 0, NULL);
if (ent)
ent->proc_fops = &misc_proc_fops;
#endif
misc_class = class_create(THIS_MODULE, "misc");
if (IS_ERR(misc_class))
return PTR_ERR(misc_class);
if (register_chrdev(MISC_MAJOR,"misc",&misc_fops)) {
printk("unable to get major
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