linux-kernel - Re: [PATCH 1/1] regulator: fixed: add suspend pm routines for pinctrl

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Message-ID: <20170103111459.ezab3iavnbvzh2hc@sirena.org.uk>
Date:   Tue, 3 Jan 2017 11:14:59 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Peter Chen <peter.chen@....com>
Cc:     lgirdwood@...il.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] regulator: fixed: add suspend pm routines for pinctrl

On Tue, Jan 03, 2017 at 05:02:47PM +0800, Peter Chen wrote:
> At some systems, the pinctrl setting will be lost or needs to
> set as "sleep" state to save power consumption. So, we need to
> configure pinctrl as "sleep" state when system enters suspend,
> and as "default" state after system resumes. In this way, the
> pinctrl value can be recovered as "default" state after resuming.

I thought this was supposed to be done automatically by the driver core?
If not it should be, every single driver is likely to end up with that.

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