From: Mark Brown <broonie@kernel.org>
To: Kevin Hilman <khilman@kernel.org>
Cc: Wenyou Yang <wenyou.yang@atmel.com>,
linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
nicolas.ferre@atmel.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] spi/atmel: add support for runtime PM
Date: Fri, 17 Oct 2014 16:31:18 +0200 [thread overview]
Message-ID: <20141017143118.GW1820@sirena.org.uk> (raw)
In-Reply-To: <7hd29qhj3i.fsf@deeprootsystems.com>
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On Fri, Oct 17, 2014 at 07:22:09AM -0700, Kevin Hilman wrote:
> Mark Brown <broonie@kernel.org> writes:
> > On Fri, Oct 17, 2014 at 06:02:35AM -0700, Kevin Hilman wrote:
> >> Wenyou Yang <wenyou.yang@atmel.com> writes:
> >> > + if (!pm_runtime_suspended(dev)) {
> >> > + clk_disable_unprepare(as->clk);
> >> > + pinctrl_pm_select_sleep_state(dev);
> >> > + }
> >> a.k.a. pm_runtime_put_sync() since the ->runtime_suspend() callback does
> >> the same thing.
> > Will that do the right thing when runtime PM is disabled in Kconfig?
> Good point.
> Then the way to make this cleaner, and obvious on inspection that system
> suspend/resume are doing the same thing as runtime suspend/resume is to
> have ->suspend call the runtime_suspend function.
> The runtime suspend/resume functions then should be wrapped in CONFIG_PM
> instead of CONFIG_PM_RUNTIME.
That sounds reasonable, yes. I keep on wishing we didn't have so much
configurability in the PM :/
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next prev parent reply other threads:[~2014-10-21 9:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-16 1:49 [PATCH] spi/atmel: add support for runtime PM Wenyou Yang
2014-10-16 7:30 ` Mark Brown
2014-10-16 8:09 ` Yang, Wenyou
2014-10-17 13:02 ` Kevin Hilman
2014-10-17 13:57 ` Mark Brown
2014-10-17 14:22 ` Kevin Hilman
2014-10-17 14:31 ` Mark Brown [this message]
2014-10-20 2:05 ` Yang, Wenyou
2014-10-20 18:09 ` Kevin Hilman
2014-10-21 0:51 ` Yang, Wenyou
2014-10-20 1:59 ` Yang, Wenyou
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