linux-kernel - Re: [RFC][PATCH v3 1/3] runtime interpreted power sequences

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Message-ID: <20120727182023.GC23564@kroah.com>
Date:	Fri, 27 Jul 2012 11:20:23 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Alexandre Courbot <acourbot@...dia.com>
Cc:	Stephen Warren <swarren@...dia.com>,
	Thierry Reding <thierry.reding@...onic-design.de>,
	Simon Glass <sjg@...omium.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Arnd Bergmann <arnd@...db.de>, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org
Subject: Re: [RFC][PATCH v3 1/3] runtime interpreted power sequences

On Fri, Jul 27, 2012 at 09:05:48PM +0900, Alexandre Courbot wrote:
> +++ b/include/linux/power_seq.h
> @@ -0,0 +1,139 @@
> +/*
> + * power_seq.h
> + *
> + * Simple interpreter for defining power sequences as platform data or device
> + * tree properties. Initially designed for use with backlight drivers.
> + *
> + * Power sequences are designed to replace the callbacks typically used in
> + * board-specific files that implement board-specific power sequences of devices
> + * such as backlights. A power sequence is an array of resources (which can a
> + * regulator, a GPIO, a PWM, ...) with an action to perform on it (enable or
> + * disable) and optional pre and post step delays. By having them interpreted
> + * instead of arbitrarily executed, it is possible to describe these in the
> + * device tree and thus remove board-specific code from the kernel.
> + *
> + * Author: Alexandre Courbot <acourbot@...dia.com>
> + *
> + * Copyright (c) 2012 NVIDIA Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; version 2 of the License.
> + *
> + * This program is distributed in the hope that it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
> + * more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

As I always say:
	Unless you want to track the office movements of the FSF for the
	next 40 years, and keep this file up to date, drop that last
	paragraph, it's pointless.

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