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Message-ID: <20090815223434.GB27637@elf.ucw.cz> Date: Sun, 16 Aug 2009 00:34:34 +0200 From: Pavel Machek <pavel@....cz> To: Mark Brown <broonie@...ena.org.uk> Cc: Felipe Balbi <me@...ipebalbi.com>, Liam Girdwood <lrg@...mlogic.co.uk>, Mike Rapoport <mike@...pulab.co.il>, linux-kernel@...r.kernel.org Subject: Re: Smart Battery System Design (was: Re: Question about userspace-consumer) On Sat 2009-08-15 17:43:24, Mark Brown wrote: > On Fri, Aug 14, 2009 at 06:32:01PM +0200, Pavel Machek wrote: > > > Please don't put basic fastcharge logic to userspace: > > > * you still want to fastcharge at init=/bin/bash boot > > > * you want to fastcharge while machine is in s2ram. See spitz. Doing > > that with userspace would be quite tricky. > > Depending on the technologies involved and how well integrated the power > path management is with the battery charger fast charge during suspend > may not actually be desirable. Some systems need or desire active > thermal management of the system from the CPU during fast charge. Do you have example of some system? Ok, well... anyway many machines _want_ fastcharge while suspended, and putting charging into userland would break them (or make that fairly difficult). 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-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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