Hi Hans, On 05/30/2017 08:53 AM, Hans Verkuil wrote: > For those who are interested in HDMI CEC support I made a little status > document that I intend to keep up to date: > > https://hverkuil.home.xs4all.nl/cec-status.txt > > My goal is to get CEC supported for any mainlined HDMI driver where the hardware > supports CEC. > > If anyone is working on a CEC driver that I don't know already about, just drop > me an email so I can update the status. > > I also started maintaining a list of DisplayPort to HDMI adapters that support > CEC. If you have one that works and is not on the list, then please let me know. > Seeing /dev/cecX is not enough, some adapters do not connect the CEC pin, so they > won't be able to detect any other CEC devices. See the test instructions in the > cec-status.txt file on how to make sure the adapter has a working CEC pin. I > plan to do some more testing this week, so hopefully the list will expand. > > Thanks! > > Hans Following our discussion on IRC, I'm working on a CEC driver for the standalone Amlogic CEC Controller that is able to wake up the device from Suspend or Power Off mode by passing infos to the FW. I initially planned to use the DW-HDMI CEC controller but I recently found out that on the Amlogic Meson GX SoCs, the CEC line can be pinmuxed to either an Amlogic custom controller or either to a Synopsys IP. But it's connected to the Synopsys HDMI-RX controller... so my plan to use Russell's code is now dead. Anyway, I'll still need to have the CEC notifier suport for DW-HDMI, so I made a rebase/cleanup of Russell's driver on 4.12-rc3 : https://github.com/superna9999/linux/commits/amlogic/v4.12/rmk-dw-hdmi-cec The rebase is aligned on dw-hdmi-i2s to use the bridge read/write ops. Neil
