Part I. DRM Core

This first part of the GPU Driver Developer's Guide documents core DRM code, helper libraries for writing drivers and generic userspace interfaces exposed by DRM drivers.

Table of Contents

1. Introduction

2. DRM Internals

Driver Initialization

Driver Information
Device Instance and Driver Handling
Driver Load
Bus-specific Device Registration and PCI Support

Memory management

The Translation Table Manager (TTM)
The Graphics Execution Manager (GEM)
VMA Offset Manager
PRIME Buffer Sharing
PRIME Function References
DRM MM Range Allocator
DRM MM Range Allocator Function References
CMA Helper Functions Reference

Mode Setting

Display Modes Function Reference
Atomic Mode Setting Function Reference
Frame Buffer Creation
Dumb Buffer Objects
Output Polling
Locking

KMS Initialization and Cleanup

CRTCs (struct drm_crtc)
Planes (struct drm_plane)
Encoders (struct drm_encoder)
Connectors (struct drm_connector)
Cleanup
Output discovery and initialization example
KMS API Functions
KMS Data Structures
KMS Locking

Mode Setting Helper Functions

Helper Functions
CRTC Helper Operations
Encoder Helper Operations
Connector Helper Operations
Atomic Modeset Helper Functions Reference
Modeset Helper Functions Reference
Output Probing Helper Functions Reference
fbdev Helper Functions Reference
Display Port Helper Functions Reference
Display Port MST Helper Functions Reference
MIPI DSI Helper Functions Reference
EDID Helper Functions Reference
Rectangle Utilities Reference
Flip-work Helper Reference
HDMI Infoframes Helper Reference
Plane Helper Reference
Tile group
Bridges

KMS Properties

Existing KMS Properties

Vertical Blanking

Vertical Blanking and Interrupt Handling Functions Reference

Open/Close, File Operations and IOCTLs

Open and Close
File Operations
IOCTLs

Legacy Support Code

Legacy Suspend/Resume
Legacy DMA Services

3. Userland interfaces

Render nodes
VBlank event handling

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