Chapter 15. Char devices

Table of Contents

register_chrdev_region — register a range of device numbers

alloc_chrdev_region — register a range of char device numbers

__register_chrdev — create and register a cdev occupying a range of minors

unregister_chrdev_region — return a range of device numbers

__unregister_chrdev — unregister and destroy a cdev

cdev_add — add a char device to the system

cdev_set_parent — set the parent kobject for a char device

cdev_device_add — add a char device and it's corresponding struct device, linkink

cdev_device_del — inverse of cdev_device_add

cdev_del — remove a cdev from the system

cdev_alloc — allocate a cdev structure

cdev_init — initialize a cdev structure