linux-kernel - Re: [PATCH] pinctrl: add a pinctrl_mux_group

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Date:	Wed, 6 Jun 2012 23:47:10 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pinctrl: add a pinctrl_mux_group_selected() function

On Tue, Jun 5, 2012 at 6:07 PM, Stephen Warren <swarren@...dotorg.org> wrote:

> Well, you can't really have different "default" modes - "default" should
> be used when there truly is a single state that the device/driver just
> wants to get programmed. When the device/driver itself can support
> multiple different configurations, "default" isn't the right answer if
> the driver needs to derive information from the selected pinctrl state;
> there should be different pinctrl states for each possible configuration.

This is true...

> It's quite unlikely you'd ever want to switch between different states
> at runtime, or program the HW to be anything other than what the board
> supports, right?

I think so too, but I'm not sure if I once heard an argument to the
contrary. Anyway, let's assume so.

Yours,
Linus Walleij
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