Re: [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE_MEM

Haojian Zhuang
2012-08-06T15:56:49Z

On Mon, Aug 6, 2012 at 11:46 PM, Mark Brown
<broonie@opensource.wolfsonmicro.com> wrote:
> On Mon, Aug 06, 2012 at 10:42:12PM +0800, Haojian Zhuang wrote:
>> On Mon, Aug 6, 2012 at 10:30 PM, Mark Brown
>
>> > 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.
>
> I understand this.
>
>> So I think that it may not be called _IO.
>
> Right, but _MEM isn't terribly relevant either. If anything _IO is a
> bit better as ioports are *somewhat* similar to registers.

The problem is that each bit is already used in 32-bit IORESOURCE. I can't
find a empty bit to define the new IORESOURCE.

Regards
Haojian