Merging OLPC XO-1 DCON driver to mainstream kernel tree?

Andres Salomon dilinger at
Mon Feb 22 21:41:44 UTC 2010

On Wed, 17 Feb 2010 19:53:18 +0800
Raymond Lai <airwave209gt-Re5JQEeQqe8AvxtiuMwx3w at>

> Hello world,
> I'm a OLPC XO-1 owner from HK. Out of boredom and fun I decided to
> make this little green baby to run Ubuntu (OK, OK...), with the help
> of various resources on the net, especially
> On the way of preparing the kernel, I wonder why the DCON driver (as
> on wasn't merged back to the
> mainstream kernel tree? At the end, I did the changes on my own, and
> I'm able to compile the kernel with DCON support added.

It was waiting on CS5535 GPIO changes.  Those changes are now upstream.

> I can submit a patch for such changes with the sources on
> But a few questions...
> - Should I?

Maybe.  It could certainly live in the staging tree while we do
cleanups, and while the OLPC folks do their XO-1.5 changes.  Greg, what
do you think? We have the full (git) history for the dcon driver;
should I clean those up and provide a staging tree for you to pull
from, or would you prefer the current driver w/out the history?

> - According to MAINTAINERS I should post the patch here right?
> - Which kernel version should I work with?
> I really hope DCON driver can be merged to the mainstream kernel
> tree, so that some time in the future, people can hack on their own
> using stock kernel sources from their distributions.
> First time here, hope you won't mind my words. :)
> Regards,
> Raymond

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