lkml.org 
[lkml]   [2009]   [Aug]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 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


\
 
 \ /
  Last update: 2009-08-16 00:37    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site