Update

Well not that much has happened, I have connected up the 3 output HDMI sockets to the chip, now just to wire up the input. I will not win any awards for the prettiest device. The way I have connected up the function pins that control the logic should allow to easily connect the the GPIO pins and power will be from the GPIO pins as well. I hope to have time during the next week to sort out the input and then I should be able to try things out. 

I have also been thinking about the proper prototype PCB and getting it built, I have found some good sites, they are mainly outside the UK so will take extra time to deliver. I intend to bring all the CEC pins to a header and use jumpers to select which will connect to the TV. Depending on the time I might try to automate this and include a matrix switch do it will always follow the device connected to the TV, or just try to find a way that all the CEC pins are connected together.