It is about input for the on-board-keyboard.
I think that's the reason for the misunderstanding. You mean the keyboard on your remote control. I use CEC to make my TV remote control work with the Raspberry Pi. That may work for you, too.
If CEC has been activated on TV (read your TV handbook to find the option, it has different names sometimes, like Viera-Link for Panasonic TV's), it will pass-through the commands from remote control to HDMI cable, and so to your Raspberry Pi. No need to use FLIRC.