linux-kernel - Re: [PATCH v5] gpio: Add driver for basic memory-mapped GPIO controllers

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Message-ID: <20100831182151.GD30599@rakim.wolfsonmicro.main>
Date:	Tue, 31 Aug 2010 19:21:51 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Anton Vorontsov <cbouatmailru@...il.com>
Cc:	David Brownell <david-b@...bell.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] gpio: Add driver for basic memory-mapped GPIO
 controllers

On Tue, Aug 31, 2010 at 09:58:39PM +0400, Anton Vorontsov wrote:
> The basic GPIO controllers may be found in various on-board FPGA
> and ASIC solutions that are used to control board's switches, LEDs,
> chip-selects, Ethernet/USB PHY power, etc.
> 
> Usually these controllers do not privide any means of pin setup
> (in/out/open drain).
> 
> The driver provides:
> - Support for 8/16/32/64 bits registers;
> - Support for GPIO controllers with clear/set registers;
> - Support for GPIO controllers with a single "data" register;
> - Support for big endian bits/GPIOs ordering (mostly used on PowerPC).
> 
> Signed-off-by: Anton Vorontsov <cbouatmailru@...il.com>

Reviewed-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
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