Re: Looking for some pointers on WMI/EC access

[Matthew Garrett <mjg59@srcf.ucam.org>]

On Wed, Dec 01, 2010 at 09:13:51PM +0100, Javier S. Pedro wrote:
> 2010/12/1 Matthew Garrett <mjg59@srcf.ucam.org>:
> > Excellent! Send a driver and I'll get it merged.
> 
> Note that I have read the iasl -d'd DSDT myself, so I ponder if that
> forbids me from writing the module (due to unclean room and all that);
> either way, here's the source of the test module I used [1].

We've never really worried about tainting from ACPI - you're writing coe 
that interfaces with that rather than copying any of their code, so it 
should be fine.

> Only available are the front keys -- with the rotation one not being
> fired when not in "tablet mode" (the EC event is not fired, seemingly)
> --  and also "tablet mode" detection, mapped of course to
> SW_TABLET_MODE.
> There's also some kind of orientation detection events that I'm yet to
> fully understand but seem nearly useless. I would very much prefer to
> read the raw accelerometer values from EC or HDAPS.

Ok.

> Also: should this be a separate "lenovo-wmi" driver or integrated with
> lenovo-laptop?

I'd go with lenovo-wmi.

> [1] http://gitorious.org/iaps/lsrot/blobs/master/lsrot.c

Wonderful. I'll take a look.

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