On Tue, Dec 06, 2011 at 12:31:21PM +0100, Heiko St?bner wrote:

My S3C2416 playground is quite similar in its low power modes and their wakeup 
sources and I've got a idle driver for it in a similar state sitting here.

Yeah, there's a lot of ARM systems look like this.

So I'm really looking forward to seeing a possible example on how to support 
the STOP and DEEP-STOP modes best.

My plan there for the s3c64xx was to use pm_domain to figure out if the
system is idle enough to drop down, I've been adding some pm_runtime
support to provide the information to the core to let it figure this out.