Allwinner A10/A10s/A20/A31 HDMI CEC Support

configname: CONFIG_DRM_SUN4I_HDMI_CEC

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Allwinner A10/A10s/A20/A31 HDMI CEC Support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Choose this option if you have an Allwinner A10/A10s/A20/A31
SoC with an HDMI controller and want to use CEC.