Btw, I took some time to take analyse the input-kbd stuff.
As said at the README:
This is a small collection of input layer utilities. I wrote them
mainly for testing and debugging, but maybe others find them useful
Gerd Knorr<kraxel@xxxxxxxxxxx> [SUSE Labs]
This is an old testing tool written by Gerd Hoffmann probably used for him
to test the V4L early Remote Controller implementations.
The last "official" version seems to be this one:
Gerd, if you're still maintaining it, it is a good idea to apply Dmitry's