linux-kernel - Re: [PATCH v3 3/3] gpio: add Intel SCH GPIO controller driver

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Message-ID: <4B8CB370.5080903@compulab.co.il>
Date:	Tue, 02 Mar 2010 08:42:56 +0200
From:	Mike Rapoport <mike@...pulab.co.il>
To:	Len Brown <lenb@...nel.org>
CC:	David Brownell <david-b@...bell.net>,
	Denis Turischev <denis@...pulab.co.il>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/3] gpio: add Intel SCH GPIO controller driver

Len Brown wrote:
>> I've looked at two x86 drivers in drivers/gpiolib (cs5535 and langwell) and
>> there's no treatment of ACPI in either of them. Since SCH is defined by Intel
>> as "embedded" product, having a GPIO driver for it seems logical even despite
>> problems you mention.
> 
> FWIW
> I believe that Langwell is used only in products without an ACPI BIOS.
> 
> Poulsbo, OTOH, is used in zillions of netbooks running Windows XP.
> I don't know what a cs5535 is.

The cs5535 is AMD Geode LX companion chip which is used with ACPI BIOS 
as well.

> cheers,
> Len Brown, Intel Open Source Technology Center
> 


-- 
Sincerely yours,
Mike.
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