Linux uses Xorg for graphics. So if this feature is supported in
Linux, then I think it would be through Xorg? The NX server is the
tiny, moral equivalent of the XServer.
This is interesting:
https://hackaday.com/2018/08/14/run-a-linux-terminal-on-cheap-e-ink-displays/
The interface is written in Python: https://github.com/joukos/PaperTTY
but I don't really see anything of interest.
I see a lot of references to "deferred IO" with ePaper devices. AFAIK
deferred IO is basically what drivers/lcd/lcd_framebuffer.c does: If
buffers all writes to the device in a framebuffer. You could then
force the framebuffer dump to hardware using the FBIO_UPDATE ioctl in
drivers/video/fb.c
Sorry... a half hour of Googling did not answer the question for me.
I'm not aware of any 'standard' interfaces. Most of the code I've seen
is hackup bits and pieces, but there's no way I'm going to build a whole
parallel ecosystem when we've got all the juicy stuff to hand...provided
we don't break anything to use it!
For interest, you can see the sort of modules I'm using at
https://www.buydisplay.com/default/e-paper-display-module-e-ink-display-kit-manufacturers/2-7-inch
So, I think the path here is that I'll tidy up what I've done and then
I'll submit it for comment and kickabout, and see where we go from there.
Regards
DAVE
