Writing to the LCD (RN516)

Does anyone have any notes on how to enable hardware support or load kernel modules etc, in order to obtain a workable method to access the displays on ReadyNAS devices from within alternative linux OSs?

Specifically I'm interested in RN516 and Pro6, but it would be great if we could start to share knowledge to help everyone with this particular issue.

I've been running various different OSs on an RN516, and have stuff like fan control sorted.

I've also sorted out a nasty ACPI issue which hogs a large chunk of CPU power due to interrupts from IRQ9.

But, I've run out of talent so far on anything that lets me access the LCD hardware.

Any pointers?  And no, there's nothing in /dev like /dev/lcd or /dev/ttyS1 or similar that will do that job.  Stuff that works inside ReadyNAS OS6 doesn't work in other linux OSs, presumably due to a lack of hardware support in the kernel, or the correct module.

So far I've completely failed to work out how to resolve this.  I managed for the fan/temperature/PWM hardware, but the LCD is kicking my butt.