From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?Q?Cl=c3=a9ment_Vuchener?= <clement.vuchener@gmail.com>
Subject: Keycodes for programmable keys/buttons
Date: Sat, 22 Aug 2015 18:38:38 +0200
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Hello,

I am writing a driver for keyboard with eighteen programmable keys. When 
they are not bound to anything on the hardware, I would like them to 
send keycodes so an userspace program can execute macros or commands 
when they are pressed. But I could not find anything suitable in 
input.h. Did I miss something? How should I handle those keys?