linux-kernel - Re: [PATCH 07/18] dmaengine/amba-pl08x: Enable/Disable amba

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Date:	Sun, 31 Jul 2011 01:53:41 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Viresh Kumar <viresh.kumar@...com>, pratyush.anand@...com,
	rajeev-dlh.kumar@...com, armando.visconti@...com,
	bhupesh.sharma@...com, vinod.koul@...el.com,
	linux-kernel@...r.kernel.org, vipin.kumar@...com,
	shiraz.hashim@...com, amit.virdi@...com, vipulkumar.samar@...com,
	viresh.linux@...il.com, deepak.sikri@...com,
	dan.j.williams@...el.com, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 07/18] dmaengine/amba-pl08x: Enable/Disable amba_pclk with
 channel requests

2011/7/30 Russell King - ARM Linux <linux@....linux.org.uk>:
> On Sat, Jul 30, 2011 at 01:07:40PM +0100, Russell King - ARM Linux wrote:
>> It may make better sense to convert this to runtime PM.  I suspect
>> that there's core support which the amba/bus.c can do to help in that
>> respect (eg, managing the apb pclk itself) so that we don't have to
>> add the same code to every primecell driver.
>
> Something like this for the bus driver (untested):
>
>  drivers/amba/bus.c |   38 ++++++++++++++++++++++++++++++++++++--
>  1 files changed, 36 insertions(+), 2 deletions(-)

I think the pm_runtime_* code Rabin put in place inside
drivers/spi/spi-pl022.c would play really well with this approach, and
just work, so:
Acked-by: Linus Walleij <linus.walleij@...aro.org>

Thanks,
Linus Walleij
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