Allwinner DRM changes for 4.14

A few changes, but most notably improving the HDMI support merged in 4.13,
by reporting the DDC adapter as an i2c bus, and by adding CEC support
through the CEC framework.
sun4i_hdmi: add CEC support

Add HDMI CEC support to the Allwinner A10 SoC.

This SoC uses a poor-man's CEC implementation by polling the CEC pin. It is
using the CEC_PIN core implementation for such devices to do the heavy
lifting. It just provides the callbacks to read/drive the CEC pin.

Signed-off-by: Hans Verkuil <>
Tested-by: Maxime Ripard <>
Signed-off-by: Maxime Ripard <>
3 files changed