字符设备(Char devices)¶
register_chrdev_region¶
函数签名：
int register_chrdev_region(dev_t from, unsigned count, const char *name);
alloc_chrdev_region¶
函数签名：
int alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count, const char *name);
__register_chrdev¶
函数签名：
int __register_chrdev(unsigned int major, unsigned int baseminor, unsigned int count, const char *name, const struct file_operations *fops);
unregister_chrdev_region¶
函数签名：
void unregister_chrdev_region(dev_t from, unsigned count);
__unregister_chrdev¶
函数签名：
void __unregister_chrdev(unsigned int major, unsigned int baseminor, unsigned int count, const char *name);
chdev_add¶
函数签名：
int cdev_add(struct cdev *p, dev_t dev, unsigned count);
chdev_set_parent¶
函数签名：
void cdev_set_parent(struct cdev *p, struct kobject *kobj);
cdev_device_add¶
函数签名：
int cdev_device_add(struct cdev *cdev, struct device *dev);
cdev_device_del¶
函数签名：
void cdev_device_del(struct cdev *cdev, struct device *dev);
cdev_del¶
函数签名：
void cdev_del(struct cdev *p);
cdev_alloc¶
函数签名：
struct cdev *cdev_alloc(void);
cdev_init¶
函数签名：
void cdev_init(struct cdev *cdev, const struct file_operations *fops);