Re: Advice on battery support [was: Advice on APM-EMU reunion]

From: Pavel Machek
Date: Fri Feb 02 2007 - 16:35:53 EST


Hi!

> > However, it has since been reposted:
> >
> > http://article.gmane.org/gmane.linux.kernel/485833
> > http://article.gmane.org/gmane.linux.kernel/485834
> > http://article.gmane.org/gmane.linux.kernel/485835
> > http://article.gmane.org/gmane.linux.kernel/485837
> >
> > and merged back in to -mm. This is all post 2.6.20 stuff, though..
>
> Ok, starting from these patches I'd like to add a "battery support" to
> the kernel.
>
> What I suppose to do is a new class with a proper methods useful to
> collect several info on battery status, such as get_ac_line_status()
> get_battery_status(), get_battery_flags(),
> get_remaining_battery_life() and so on.
>
> The output will be APM-like into file "/proc/apm" (one line per
> battery, or just the "main"/first one?) so that existing applications
> continue to work and under sysfs into "/sysfs/class/battery".
>
> Is it sane? :)

Yep. Notice that designing /sysfs/class/battery is not going to be
easy, and that some work was already done in context of olpc
project. Search the mailing lists...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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