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: NHans Verkuil <hans.verkuil@cisco.com> Tested-by: NMaxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
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