From mboxrd@z Thu Jan  1 00:00:00 1970
From: Robert Hancock <hancockrwd@gmail.com>
Subject: Re: libata PM question
Date: Sun, 29 Nov 2009 21:47:41 -0600
Message-ID: <4B13405D.6040407@gmail.com>
References: <1259547765.2076.48.camel@pasglop> <1259547943.2076.50.camel@pasglop>
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To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-ide@vger.kernel.org, Tejun Heo <tj@kernel.org>, Jeff Garzik <jeff@garzik.org>

On 11/29/2009 08:25 PM, Benjamin Herrenschmidt wrote:
> On Mon, 2009-11-30 at 13:22 +1100, Benjamin Herrenschmidt wrote:
>> Hi there !
>>
>> So I (finally !) resumed work on pata_macio.c to replace ide/pmac.c :-)
>>
>> I've started looking at the suspend/resume stuff. It looks like most of
>> it just comes for free thanks to libata, yay ! :-)
>
>   .../...
>
> Oh, another question... where do we spin the disk down&  park it on
> suspend ? I'm missed at least that part :-)

sd driver handles that part (it issues a START STOP UNIT command which 
gets translated into STANDBY IMMEDIATE).