linux-kernel - Re: [PATCH 2/4] powerpc/qe: new call to revert a gpio to a dedicated function

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Message-Id: <B8BAAB1F-10B5-419D-84A7-F724A7E77F41@kernel.crashing.org>
Date:	Tue, 23 Sep 2008 23:07:00 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Anton Vorontsov <avorontsov@...mvista.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Greg Kroah-Hartman <greg@...ah.com>,
	Timur Tabi <timur@...escale.com>,
	Li Yang <leoli@...escale.com>,
	Laurent Pinchart <laurentp@...-semaphore.com>,
	linuxppc-dev@...abs.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] powerpc/qe: new call to revert a gpio to a dedicated function


On Sep 23, 2008, at 7:03 PM, Anton Vorontsov wrote:

> qe_gpio_set_dedicated() is a platform specific function, which is used
> to revert a pin to a dedicated function. Caller should have already
> obtained the gpio via gpio_request().
>
> This is needed to support Freescale USB Host Controller.
>
> Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
> ---
> arch/powerpc/include/asm/qe.h     |    1 +
> arch/powerpc/sysdev/qe_lib/gpio.c |   46 ++++++++++++++++++++++++++++ 
> +++++++++
> 2 files changed, 47 insertions(+), 0 deletions(-)

what do you mean by dedicated function.. be a bit clearer in the  
commit log.  Also, does this depend on gpio_to_chip() patch?

- k
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