Published on Tuesday was this FBDEV implementation for Wayland's Weston by Philip Withnall with this patch message -- fbdev: Add an fbdev compositor backend using pixman and evdev.
This FBDEV back-end shares some common code with Weston's Raspberry Pi back-end, including the use of the evdev code for handling input devices. Also recently brought to Weston was using Pixman as a software-renderer for Weston to render to the frame-buffer.
Testing so far has been done atop the nouveaufb driver on NVIDIA hardware. Right now though this back-end is rather experimental and its developer is seeking feedback. "This is an initial version of an fbdev backend for Weston. I don't consider it polished; I'm just looking for rough feedback at the moment."
Implementing this FBDEV Weston compositor took just a little more than 800 lines of code and for now is being developed in this Gitorious repository.