linux-kernel - Re: Using POWER or APM for battery handling

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Message-Id: <20090327214106.dbf36adf.kristoffer.ericson@gmail.com>
Date:	Fri, 27 Mar 2009 21:41:06 +0100
From:	Kristoffer Ericson <kristoffer.ericson@...il.com>
To:	avorontsov@...mvista.com
Cc:	cbou@...l.ru,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Using POWER or APM for battery handling

On Fri, 27 Mar 2009 22:29:47 +0300
Anton Vorontsov <avorontsov@...mvista.com> wrote:

> Hello Kristoffer,
> 
> On Fri, Mar 27, 2009 at 08:24:06PM +0100, Kristoffer Ericson wrote:
> > Hey Anton,
> > 
> > My machines (HP Jornada 600-series and HP Jornada 700-series) both
> > rely on batteries for power. Now, in the past it has all
> > been handled by an APM_EMULATION driver that
> > essentially detects the current state (loading YES/NO, 
> > POWER_LEFT, ESTIMATED TIME LEFT,...) and adjusts
> > the state of the machine.
> > 
> > My question is should I port this to instead
> > use the power class (drivers/power) or not.
> 
> The driver is already there:
> drivers/power/apm_power.c
> 
> So all you need is Jornada driver for the power supply class,
> and then apm_power.c will work for your battery driver.
> 
> Feel free to ask if there is anything still not clear.

Great!

I think I understand, but should I create this driver
inside /drivers/power or inside the mach folder (in this case arch/arm/mach-sa1100)?

> 
> Thanks,
> 
> -- 
> Anton Vorontsov
> email: cbouatmailru@...il.com
> irc://irc.freenode.net/bd2


-- 
Kristoffer Ericson <kristoffer.ericson@...il.com>

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