Linux input Subsystem (5)-Learning Framework

Note: This series turns from: http://www.ourunix.org/post/290.html

The input Subsystem Learning series is the first Linux driver that I have encountered in the actual development process, so it is necessary to record it. Since the beginning did not touch the input subsystem, some of the data is also used for reference network, this series of articles is My learning experience and set hundreds of the product of the director.

The input subsystem learns a series of articles that mainly include the following:

Input Subsystem Theory Section

Input Subsystem Introduction

Input subsystem structure diagram

Input device-driven tiering in Linux

Input subsystem Device driver layer implementation principle

Software Design Process

Design-related APIs

Assigning an input device

Registering an input device

Drive implementation-Event support

Drive implementation-reporting events

Releasing and Unregistering devices

Example analysis (key-driven)

Analysis of important functions of code implementation

Input_allocate_device ()

Registration function Input_register_device ()

Input_report_key () Reporting events to the subsystem

Handler Registration Analysis

Key Data Structures

Register Input_handler

Register Input_handle

Subsystem

subsystem initialization function Input_init ()

Evdev input event-driven analysis

Initialization of the Evdev

Linux input Subsystem (5)-Learning Framework