linux-kernel - Re: [PATCH 3/5] power_supply: add a TRICKLE_CHARGING status, and add it to the olpc driver

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Message-ID: <4A41618D.4020900@laptop.org>
Date:	Tue, 23 Jun 2009 19:13:17 -0400
From:	"Richard A. Smith" <richard@...top.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Andres Salomon <dilinger@...labora.co.uk>, cbou@...l.ru,
	dwmw2@...radead.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Paul Fox <pgf@...top.org>, dsaxena@...top.org
Subject: Re: [PATCH 3/5] power_supply: add a TRICKLE_CHARGING status, and
 add it to the olpc driver

Mark Brown wrote:

> The problem here is that anything which is already looking at these
> statuses is going to have to be able to cope with the information too.
> In the OLPC case it probably doesn't matter so much if they get
> confused since this is an unusual case but in the embedded case it's
> much more normal (and more likely to happen while a user interacts with
> the device since that tends to burn power which is a problem if you're
> charging off USB).

> A separate file with the detailed information would sidestep this since
> it's a new interface.  I'm not strongly opposed to adding the new states
> but I do think it's worth considering other ways of doing this.

I've got no problems with a new interface.  But, i'm also not the person 
writing the driver. :)

I can change my script to test for the presence of this new interface 
and use that if it exists rather easily.  I already have to handle a few 
cases like that where Andres changed things when I wasn't watching.

Suggestions on what it would look like?

-- 
Richard Smith  <richard@...top.org>
One Laptop Per Child
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