Linux Device Drivers

Introduction to Linux Device Drivers

Types of Device Drivers

Kernel Module Basics for Drivers

Driver Initialization and Cleanup

Driver Registration and Unregistration APIs

Dynamic vs Static Device Number Allocation

Major and Minor Numbers

Device File Interface

Registering Character Devices

Implementing Read, Write, and IOCTL

Device Class and udev Integration

Memory Allocation in Drivers

Driver Synchronization

Wait Queues and Completion Mechanisms

Polling and Blocking I/O in Drivers

Workqueues and Tasklets in Drivers

Interrupt Handling in Drivers

Using Timers in Drivers

DMA in Device Drivers

Accessing I/O Ports and Memory-Mapped I/O

Reference Counting in Drivers

Driver Cleanup and Error Handling Patterns

Platform Drivers and Device Tree Basics

Device Tree Binding Documentation

Multi-Device and Multi-Instance Drivers

Device Removal and Hot-Unplug Handling

Sysfs and Procfs Interfaces for Drivers

Power Management in Drivers

Hotplug and Device Detection

Integration with Kernel Subsystems

Debugging Device Drivers

Writing Portable and Cross-Platform Drivers

Testing and Staging Drivers