1. Architectures
1.1. x86
1.2. ARM
1.3. PowerPC
1.4. MIPS
1.5. S390
2. Drivers
2.1. Staging drivers
2.2. Graphics
2.3. Networking
2.4. Sound
2.5. USB
2.6. Input
2.7. TV tuners, webcams, video capturers
2.8. Hardware monitoring
2.9. Memory technology devices (MTD)
2.10. Multi-function devices (MFD)
2.11. Multi Media Card (MMC)
2.12. Voltage and Current Regulator
2.13. ACPI/EFI
2.14. I2C
2.15. Watchdogs
2.16. Serial Peripherical Interface (SPI)