linux-kernel - Re: How to use the generic thermal sysfs.

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Message-ID: <20120727093037.094335eb@endymion.delvare>
Date:	Fri, 27 Jul 2012 09:30:37 +0200
From:	Jean Delvare <khali@...ux-fr.org>
To:	Wei Ni <wni@...dia.com>
Cc:	Zhang Rui <rui.zhang@...el.com>,
	"R, Durgadoss" <durgadoss.r@...el.com>,
	"Brown, Len" <len.brown@...el.com>, akpm@...ux-foundation.org,
	joe@...ches.com, linux-kernel@...r.kernel.org,
	linux-tegra@....kernel.org, Alex Courbot <acourbot@...dia.com>
Subject: Re: How to use the generic thermal sysfs.

On Fri, 27 Jul 2012 10:58:21 +0800, Wei Ni wrote:
> On Fri, 2012-07-27 at 09:21 +0800, Zhang Rui wrote:
> > is it possible to program the sensor at this time, in your own thermal
> > driver?
> 
> Since we are using the generic thermal driver lm90.c, I'm not sure if we
> could program these limits in the generic driver, I think it's better to
> have a generic interface to set the limits, so I wish to add a
> callback .set_limits() in the generic thermal framework.

I can confirm that hwmon drivers do not set limits, it is up to
user-space to do it if they want. So if there is a need to do so in the
kernel itself, a proper interface at the generic thermal framework
level seems appropriate.

-- 
Jean Delvare
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