p.s. I still didn't find a way to send an image to eink screen and support didn't want to release the sources or send an example in near future (they didn't say no, but during last monthes every week I send them email and they said that "working on it"). So I will be very thankfull if someone find the way to use e-ink display (maybe compiling some directfb layer or something like this?).
p.s.s. as I see everything connected to e-ink started with "esi*" or "ep3521*" or "fb*" fbdev, dfb. Hope this help.