linux-kernel - Re: [PATCH 6/10] ACPI: register ACPI Video LCD as generic thermal cooling device

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Message-Id: <1200988902.7424.14.camel@acpi-sony.sh.intel.com>
Date:	Tue, 22 Jan 2008 16:01:42 +0800
From:	Zhang Rui <rui.zhang@...el.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	lenb@...nel.org, linux-acpi@...r.kernel.org,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	"Thomas, Sujith" <sujith.thomas@...el.com>
Subject: Re: [PATCH 6/10] ACPI: register ACPI Video LCD as generic thermal
	cooling device

Hi, Matthew,

On Fri, 2008-01-18 at 09:42 +0800, Matthew Garrett wrote:
> On Fri, Jan 18, 2008 at 09:31:40AM +0800, Zhang Rui wrote:
> 
> > Just like I don't think lcd should be used for ACPI thermal
> management
> > before I saw it is listed in _TZD and intel_menlow requires to
> throttle
> > it when overheating, why not let the individual drivers implement
> the
> > callbacks if there is clearly a request to do this.
> > And we can add this to the generic acpi_device struct then if this
> is a
> > common feature for all ACPI devices.
> 
> It'll probably never be common for all ACPI devices,
I agree.
>  but it's already
> required for three types. I think that's a strong argument for making
> it generic.
I don't think it's worth doing this as it's only the common feature for
three ACPI devices.
> > Well, you're right.
> > But in order to throttle the lcd, this is reasonable, right?
> 
> Moving the common code into its own routine and then calling that from
> each of the others would probably work.
Yes.
I can send an on top patch if the patch "Rationalise ACPI backlight
implementation" is applied.

Thanks,
Rui

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