(Sorry for taking so long to respond)

On Thu, Apr 07, 2011 at 06:18:00PM +0200, Anisse Astier wrote:

Pegatron Lucid tablet sends an ACPI hotkey event(0xEA) when the
accelerometer detects coarse orientation change. My initial thought was
to just translate this event into KEY_DIRECTION, which seems to be the
norm from what we can see in hp-wmi driver. (See patch below for an
implementation.)

But this isn't just a key per se like on the HP touchsmart tablet, this
is an event that is triggered when the device is rotated.

This could be defined as a new Misc (EV_MSC) event:
MSC_ORIENTATION_CHANGED ?

I'd say that it ought to be hooked into the accelerometer driver and 
that should indicate that the orientation has changed.

-- 
Matthew Garrett | mjg59@srcf.ucam.org