Kernel Interfaces Manual
NAME ddc — VESA Display Data Channel V2 devices
SYNOPSIS ddc at iic? addr 0x50
DESCRIPTION The ddc driver provides support for accessing the VESA Display Data Channel Version 2 supported by many video displays.
HISTORY The ddc device appeared in NetBSD 4.0.
BUGS This driver does not provide any mechanism for access from user applications. Its only use at this point is to provide a means for framebuffer device drivers to query monitor description data (EDID) using a specialized in-kernel API. No support for sending control commands to display devices is provided.