linux-kernel - Re: power: Add simple poweroff-gpio driver

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Date:	Fri, 14 Dec 2012 20:53:40 +0100
From:	Andrew Lunn <andrew@...n.ch>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Dave Jones <davej@...hat.com>, Andrew Lunn <andrew@...n.ch>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jamie Lentin <jm@...tin.co.uk>,
	Simon Baatz <gmbnomis@...il.com>,
	Jason Cooper <jason@...edaemon.net>
Subject: Re: power: Add simple poweroff-gpio driver

> > I think it needs to be on the menuconfig, rather than the child options.
> > I don't have OF_GPIO, but I still got asked for the former.
> 
> The menuconfig enables a class of drivers (at least theoretically in the
> future, when more such drivers turn up), and there's no reason to
> believe that all of those drivers will depend on OF. So in my opinion,
> making POWER_RESET_GPIO depend on OF makes sense, but making POWER_RESET
> depend on it doesn't.

I have another driver coming soon which will not depend on OF_GPIO. It
does however depend on OF. Its for a class of boards which have a
microcontroller controlling the main power supply, and sending an
character over a UART port is used to turn the board power off.

There might also be some legacy drivers which could be moved here
which don't depend on OF at all.

So i would prefer to keep POWER_RESET generic.

      Andrew
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