Can I make my kernel support more keycodes?

rlholgate · Last edited by rlholgate on Tue Jul 05, 2005 12:34 pm; edited 1 time in total

I have a remote control that uses the ir-kbd-gpio module. That module makes the remote look like a keyboard. The module is working properly - when I press buttons on the remote I can use showkey to display the keycodes the module generates, e.g:

beissemj · Posted: Tue Jul 05, 2005 7:02 am Post subject:

emerge xbindkeys
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rlholgate · Posted: Tue Jul 05, 2005 12:31 pm Post subject:

I have looked at tools like xbindkeys, and might have to use something like that it seems.

This post on the LKML - http://lkml.org/lkml/2003/12/30/49 shows dumpkeys output for keys from 0 to 511, which seems to imply its possible to compile the kernel with a keymap size of 512, instead of the normal 256. Certainly when I run dumpkeys on my own box it only dumps keys up to and including 255, and tells me the keyrange supported by the kernel is 0 to 255. This tallies up with the kernel source, which defines NR_KEYS as 255 in /usr/src/linux/include/linux/keyboard.h.

Maybe I don't know what I'm talking about, cause I'm certainly not finding much info on the topic! - but that LKML posting got me wondering if NR_KEYS can be configured somehow, so the kernel can directly map keys like 372?