linux-kernel - Re: [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE

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Message-ID: <CAN1soZwCr=L3Xdi7HS9dQMxo4DzzbQv2kXo9R_U6QAf7v=B10Q@mail.gmail.com>
Date:	Mon, 6 Aug 2012 22:42:12 +0800
From:	Haojian Zhuang <haojian.zhuang@...il.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	sameo@...ux.intel.com, rpurdie@...ys.net, bryan.wu@...onical.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE_MEM

On Mon, Aug 6, 2012 at 10:30 PM, Mark Brown
<broonie@...nsource.wolfsonmicro.com> wrote:
> On Mon, Aug 06, 2012 at 12:32:48AM +0800, Haojian Zhuang wrote:
>
>> Since IORESOURCE_IO is used for PCI devices, it doesn't fit on
>> 88PM860x PMIC device that lies on I2C bus. So use IORESOURCE_MEM
>> instead.
>
> This isn't much more appropriate - _MEM is for memory ranges so isn't
> directly relevant to register addresses either.  If anything _IO is
> slightly nearer.

I use register resource to distinguish different components now. For
example, component driver
needs to access the registers in PMIC. These registers offsets are set
in 88pm860x-core.c.
So I think that it may not be called _IO.

Regards
Haojian
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