Re: [PATCH RFC] Add support for the matrix keyboard used in Bachmann's OT200

Hi Christian,

On Wed, Dec 12, 2012 at 02:35:41PM +0100, Christian Gmeiner wrote:

The used matrix keyboard controler (implemented via FPGA) supports
two simultaneous key presses. The driver sends the raw register
values for each key (row & column) to userspace.

In userspace a small tool is running, which reads a 'mapping'
file, processes the key events and send the configured keycodes
back to the kernel via uinput.

This is a bit roundabout way of doing it. Why can't the kernel driver
perform lookup in it's internal table and emit proper keycodes itself?
We have wealth of options for supplying keymaps to the kernel drivers,
including:

- platform data
- device tree data
- loading from userspace via EVIOCSKEYCODE ioctl.

Thanks.

-- 
Dmitry