Linux Device Drivers and Driver Model

1. Driver API index

   Index of in-kernel driver interfaces.

2. Driver model overview

   Buses, devices, drivers and classes.

3. Device drivers basics

   Core driver helpers such as module parameters, bitmaps, and kernel library APIs.

4. DMA API

   Coherent and streaming DMA mappings.

5. Interrupts

   IRQ domains and interrupt handling.

6. Kobjects

   kobject, ktype and kset refcounting and sysfs.

7. Linux kernel module building

   Building external out-of-tree modules.

8. Kconfig language

   Configuration symbols and dependencies.

9. Loadable kernel module guide

   Kernel module signing and loading.

10. Block layer

    blk-mq, IO schedulers and request queues.

11. Character devices

    Misc devices and character device registration helpers.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.