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Part 1: Getting Started
Learning Paths
1.1 Introduction
1.2 Environment Setup
1.3 Kernel Sources
1.4 First Module
1.5 QEMU Testing
Part 2: Kernel Fundamentals
2.1 Kernel Architecture
2.2 Module Lifecycle
2.3 Coding Style
2.4 Data Types
2.5 Error Handling
2.6 Kernel API
2.7 Kernel Data Structures
Part 3: Character Device Drivers
3.1 Character Device Concepts
3.2 File Operations
3.3 Device Registration
3.4 Read and Write
3.5 IOCTL
3.6 Poll and Seek
3.7 Misc Devices
Part 4: Concurrency and Synchronization
4.1 Concurrency Concepts
4.2 Spinlocks
4.3 Mutexes
4.4 Semaphores
4.5 Atomic Operations
4.6 RCU
4.7 Completions
4.8 Work Queues
4.9 Lockdep
4.10 Kernel Timers
4.11 Wait Queues
4.12 Kernel Threads
Part 5: Memory Management
5.1 Memory Allocators
5.2 GFP Flags
5.3 Slab Allocator
5.4 Per-CPU Variables
5.5 Coherent DMA
5.6 Streaming DMA
5.7 Memory-Mapped I/O
5.8 mmap
Part 6: Device Model and Driver Framework
6.1 Device Model Basics
6.2 Kobjects
6.3 Platform Drivers
6.4 Probe and Remove
6.5 Managed Resources (devres)
6.6 Device Attributes
6.7 Deferred Probe
Part 7: Interrupt Handling
7.1 Interrupt Concepts
7.2 Requesting IRQs
7.3 Interrupt Handlers
7.4 Top and Bottom Halves
7.5 Tasklets
7.6 Threaded IRQs
7.7 Shared Interrupts
7.8 Interrupt Control
Part 8: Platform Bus and Device Tree
8.1 Device Tree Basics
8.2 Device Bindings
8.3 Property Access
8.4 GPIO in Device Tree
8.5 Clocks and Regulators
8.6 Device Tree Overlays
8.7 Binding Documentation
Part 9: I2C, SPI, and GPIO Drivers
9.1 I2C Subsystem
9.2 I2C Client Driver
9.3 I2C with Regmap
9.4 SPI Subsystem
9.5 SPI Driver
9.6 GPIO Consumer API
9.7 GPIO Provider
9.8 Pin Control Subsystem
Part 10: PWM, Watchdog, HWMON, LED Drivers
10.1 PWM Subsystem
10.2 PWM Provider
10.3 Watchdog Subsystem
10.4 Watchdog Driver
10.5 HWMON Subsystem
10.6 HWMON Driver
10.7 LED Subsystem
10.8 Input Subsystem
Part 11: IIO, RTC, Regulator, Clock Drivers
11.1 IIO Subsystem
11.2 IIO Driver
11.3 IIO Buffers
11.4 RTC Subsystem
11.5 RTC Driver
11.6 Regulator Subsystem
11.7 Regulator Driver
11.8 Clock Framework
11.9 Clock Provider
Part 12: Network Device Drivers
12.1 Network Driver Concepts
12.2 Driver Skeleton
12.3 NAPI
12.4 Ethtool Operations
12.5 Link State Management
Part 13: Block Device Drivers
13.1 Block Driver Concepts
13.2 Driver Skeleton
13.3 Block Device Operations
13.4 Request Handling
Part 14: USB Drivers
14.1 USB Concepts
14.2 Driver Skeleton
14.3 USB Transfers
14.4 Error Handling
14.5 Suspend and Resume
14.6 User Space Interface
14.7 Porting from Custom I/O
14.8 WinUSB and libusb Compatibility
14.9 USB Class Drivers
14.10 USB Gadget Drivers
14.11 Dynamic USB Gadget Configuration
Part 15: PCIe Drivers
15.1 PCI Concepts
15.2 Driver Skeleton
15.3 MSI/MSI-X Interrupts
15.4 DMA Operations
15.5 PCIe Security: Attestation and Link Encryption
Part 16: Power Management
16.1 PM Concepts
16.2 PM Implementation
16.3 Wakeup Sources
16.4 System Sleep States
Appendix A: Debugging
A.1 Logging
A.2 Tracing
A.3 Crash Analysis
Appendix B: Kernel Interfaces
B.1 sysfs
B.2 debugfs
Appendix C: Firmware Loading
Appendix D: Security
Appendix E: Testing
E.1 KUnit
E.2 Runtime Checks
Appendix F: Upstreaming
Appendix G: Glossary
Appendix H: References
Appendix I: JTAG Drivers
Appendix J: User Space Drivers
Kernel Docs
LWN.net
Bootlin Training
Search Linux Driver Development Guide
GitHub Repository