Developer Documentation

A collection of links to documentation and tools related to ddcutil.

• Linux Kernel Documentation This is the top level of the kernel's documentation tree. Some pages of particular interest:

• Linux I²C Subsystem

• Linux GPU Driver Developer's Guide
• GPU Driver Documentation

• amdgpu Module Parameters

• Arch web page on controlling display brigtness Covers both laptop displays and DDC/CI enabled external monitors

• Rules on how to access information in sysfs From the Linux kernel documentation
• Intel Graphics for Linux Developer documentation for the drm/i915 kernel driver, including bug filing and debugging instructions.
• Linux GPU Driver Developer's Guide =I2C/SMBUS Fault Codes

Wayland

• The Wayland Protocol Detailed documentation of the Wayland protocol by Drew DeVault, developer of the tiling window manager sway, and the person who started wlroots.

Development Tools

• Understanding system calls on Linux with strace Article on opensource.com
• The GDB developer's GNU Debugger tutorial, Part 1: Getting Started with the debugger A deep dive into using the debugger. This page links to others in the series.
• How to check for ABI changes in a package Fedora Project wiki page, describe abidiff, abi-compliance-checker
• Linux DRM Developers Guide Lauren Pinchart, 2008-2012
• DRM Userland Interfaces Part of GPU Driver Developer's Guide
• [The DRM/KMS subsystem from a newbie’s point of view][https://events.static.linuxfound.org/sites/events/files/slides/brezillon-drm-kms.pdf) Boris Brezillon, Free Electrons. Conference talk, 2014
• An introduction to the Linux DRM subsystem Maxime Ripard, Bootlin. Conference talk 2017
• patchwork.org
• Intel Graphics Driver
• DRM Development
• lists.freedesktop.org
• https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Miscellaneous

• Rules on how to access information in sysfs From The Linux kernal user's and administrator's guide
• A tour of /sys/devices Article by Neil Brown on LWN.net, 6/3/2015.