TTY discipline for Joypad

[NIIBE Y. <gn...@m1...>]

Hi there, 

I'm not sure this question is welcomed to this list.  I'm not the
member of this list yet.

I am the maintainer of SuperH port of Linux kernel.  Among targets,
there's the Dreamcast, the video game console.  Linux works quite well
on Dreamcast, however, most people doesn't have keyboard with
Dreamcast, which is a problem.

Hence, I'm thinking using Joypad (with cursor key, analog joystick,
four-buttons, two keys, and start button) to emulate keyboard.
(There's a joypad driver already.)

I think I need to implement some special TTY discipline to input a
character and to edit a line.  Is there any work done in this area?
Please let me know.

Thanks in advance, 
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