Re: Supporting multiple keyboard

[James S. <jsi...@ac...>]

> Well, I have one /dev/input/eventX per one input devices, so that every
> application receiving input events doesn't have to get them from all
> devices in the system.

That can end up being alot of devices. I see you have a ioctl to tell what
device you are attached to. The next question is how to hand a multiheaded
system. You don't want a user to grab someone else mouse at a workstation
3 offices down. Hum? We will have to think about this.

   I was think about keybdev.c. Not what it does now but using it to
initailize the keyboard indepedent of CONFIG_VT. What about a system with 
only a serial console and if someone attaches a keyboard. In this case we
don't have /dev/tty but we should get a /dev/input/event0 for it. A cool
app would grab data from teh keyboard and then do a write on /dev/ttyS0.
PS/2 Keyboard data could be displayed on a serial console then :) So we
should initalize the keyboard outside of keyboard.c to make it avaliable
in any system. Then keyboard.c would be compiled in a VT system to be
translate the events to a tty keymap. 

  I'm using struct vt_struct to represent each physical VT (a display and
a physical keyboard). I'm using number in input_dev as the keyboard
identifier in vt_struct. For the function kbd_keycode I pass in this
number. This way I can look threw the vt_structs to find the VT the
keyboard is attached to. Once I find it I have the vt_struct that
represents this physical VT. The only problem is you use struct tty_struct
which I can't readly grab from vt_struct. Hum? I'm going to have to think
some more. I realize now I need vt_struct as a link list. A link list will
not be that big of performace hit to search since it will never have large
size for multihead systems. 

Ug!!! I have to think of a way to tty visiable without using ttytab. In
the future the ttys will dynamic in number so a static array wouldn't
work.

Q: Why did they deprecate a.out support in linux?
A: Because a nasty coff is bad for your elf.

James Simmons  [jsi...@li...]               ____/| 
fbdev/console/gfx developer                             \ o.O| 
http://www.linux-fbdev.org                               =(_)= 
http://linuxgfx.sourceforge.net                            U
http://linuxconsole.sourceforge.net