Re: Bring a new x86_64 device to Linux

[Alexandre Courbot <gnurou@xxxxxxxxx>]

On Mon, Aug 18, 2014 at 8:59 AM, Agron Selimaj <as9902613@xxxxxxxxx> wrote:
> Hello,
>
> I am making a GPIO driver for a custom x86_64 motherboard.
>
> It came with a windows driver which is fairly simple but before
> reading or witting to a certain GPIO pin I have to keep reading an
> other ioport with inb() until GPIO data is ready.
>
> However, I need to make sure this is the right motherboard so I am
> reading a 10 byte string where the model information is located, but
> just before I read the last byte the kernel is killing my kernel
> module and marking it as tainted. Why would this happen?

Backtrace, module source code?

> I also noticed that detection and probing is now done using platform
> drivers on ARM platform. I would like to follow the same on x86_64 but
> I don't find any documentation/examples to help me.

Documentation/driver-model/platform.txt should be a good start.
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