linux-kernel - Re: [RFC 1/2] PM / suspend: Add platform_suspend_target

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Date:   Sun, 16 Jul 2017 20:24:58 +0200
From:   Pavel Machek <pavel@....cz>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Mason <slash.tmp@...e.fr>, linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-pm <linux-pm@...r.kernel.org>,
        Thibaud Cornic <thibaud_cornic@...madesigns.com>,
        JB <jb_lescher@...madesigns.com>,
        Kevin Hilman <khilman@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC 1/2] PM / suspend: Add platform_suspend_target_state()

Hi!

> > There still will be a concern regarding drivers that care about differences between
> > PM_SUSPEND_MEM and PM_SUSPEND_STANDBY, because those differences are
> > platform-dependent, but let's defer addressing this until we have a driver
> > that needs to run on different platforms with different definitions for those
> > things.
> > 
> 
> We already have the case for drivers/net/ethernet/cadence/ and
> drivers/net/can/m_can/ and many of the at91 drivers. Depending on the
> specific SoC they run on, PM_SUSPEND_MEM may or may not cut VDDcore or
> may or may not change the peripheral clock.

Please please introduce will_vddcore_be_cut_down() or similar helper,
so that we have one place to fix..

Thanks,
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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