> One of the things we're facing is Android, which has > its userspace in plain Java JNI at the end of this link: > http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=s > ervices/jni/com_android_server_BatteryService.cpp;h=8e7cadc6b680fc420d34 > 1faa094c71922946fdab;hb=HEAD > > If you browse down to line 275 you can see it parse the sysfs > attribute "capacity", then this propagates up to the battery > status indicator on *all* Android phones out there. So if > you want to run Android unmodified, this is what you need to > provide. They are effectively using the power sysfs as > their hardware abstraction layer in this case. > > Note: I'm not claiming that Android is doing it right or that > we can't modify this code or so, it's just that this is the way > a few million Android devices out there are actually doing it. Users can't modify them, so they don't count... ...but then there are all the systems that rely on /proc/apm emulation, like openembedded popular on sharp zaurus... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
