linux-kernel - Re: [PATCH v7] gpio: Add driver for basic memory-mapped GPIO controllers

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Date:	Wed, 22 Sep 2010 02:23:54 +0400
From:	Anton Vorontsov <cbouatmailru@...il.com>
To:	David Brownell <david-b@...bell.net>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7] gpio: Add driver for basic memory-mapped GPIO
 controllers

On Tue, Sep 07, 2010 at 06:01:32PM +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.
> 
> These controllers may not provide any means of pin setup
> (in/out/open drain).
> 
> The driver supports:
> - 8/16/32/64 bits registers;
> - GPIO controllers with clear/set registers;
> - GPIO controllers with a single "data" register;
> - 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>
> ---
> 
> A lucky v7.
> 
> In v7 I only changed platform data handling. It appears that
> when used with MFD core, we can't just pass integers via
> platform_data poiner, as platform_device_add_data() would try
> to copy the data pointed by mfd_cell.platform_data.
> 
> This is now fixed by introducing a proper platform data
> struct.

Ping? Anyone?

-- 
Anton Vorontsov
email: cbouatmailru@...il.com
irc://irc.freenode.net/bd2
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