linux-kernel - Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH

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Message-ID: <AANLkTikUJMfo8m8o1rQdf264g2P39uHLRp80vGPW0Jni@mail.gmail.com>
Date:	Tue, 28 Sep 2010 01:02:35 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	Masayuki Ohtake <masa-korg@....okisemi.com>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Alek Du <alek.du@...el.com>, richard.rojfors@...ean-labs.com,
	meego-dev@...go.com,
	ML linux-kernel <linux-kernel@...r.kernel.org>,
	Qi <qi.wang@...el.com>, andrew.chih.howe.khor@...el.com,
	gregkh@...e.de, Yong Y <yong.y.wang@...el.com>,
	Tomoya MORINAGA <morinaga526@....okisemi.com>,
	joel.clark@...el.com, margie.foster@...el.com,
	kok.howg.ewe@...el.com
Subject: Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH_GPIO driver to 2.6.35

On Tue, Sep 28, 2010 at 00:57, Masayuki Ohtake wrote:
> I have modified for GPIO standard I/F referring other accepted GPIO driver.

no idea what this driver is

> According to Documentation/gpio.txt,
> I tried to create GPIO node like below.
>
> [root@...alhost gpio]# ls
> export  gpiochip244  unexport
> [root@...alhost gpio]# echo 1 > export
> bash: echo: write error: Invalid argument
> [root@...alhost gpio]#
>
> But it fails.

find out what range of GPIO numbers your driver is using and use those
instead of "1"
-mike
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