linux-kernel - Re: [PATCH 1/2] gpio/omap: maintain GPIO and IRQ usage separately

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Date:	Fri, 27 Sep 2013 11:08:43 -0700
From:	Kevin Hilman <khilman@...aro.org>
To:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Stephen Warren <swarren@...dotorg.org>,
	Lars Poeschel <larsi@....tu-dresden.de>,
	Grant Likely <grant.likely@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ian.campbell@...rix.com>,
	Kumar Gala <galak@...eaurora.org>,
	Pawel Moll <pawel.moll@....com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Enric Balletbo i Serra <eballetbo@...il.com>,
	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>,
	Balaji T K <balajitk@...com>,
	Tony Lindgren <tony@...mide.com>,
	Jon Hunter <jgchunter@...il.com>, linux-gpio@...r.kernel.org,
	linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, r.sricharan@...com,
	holler@...oftware.de
Subject: Re: [PATCH 1/2] gpio/omap: maintain GPIO and IRQ usage separately

Javier Martinez Canillas <javier.martinez@...labora.co.uk> writes:

> The GPIO OMAP controller pins can be used as IRQ and GPIO
> independently so is necessary to keep track GPIO pins and
> IRQ lines usage separately to make sure that the bank will
> always be enabled while being used.
>
> Also move gpio_is_input() definition in preparation for the
> next patch that setups the controller's irq_chip driver when
> a caller requests an interrupt line.
>
> Signed-off-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>

I'm fine with this appproach.  For both patches:

Reviewed-by: Kevin Hilman <khilman@...aro.org>

Also, I gave it a spin across a handful of OMAP boards using v3.12-rc2 +
these 2 patches.

Boot tested successfully with DT boot:

omap3530/beagle
omap3730/beagle-xm
omap3530/overo (Tobi w/GPIO IRQ networking)
omap3730/overo STORM (w/GPIO IRQ for networking)
am335x/beaglebone
am335x/beaglebone black
omap4430/panda
omap4460/panda-es
omap5912/OSK (omap1)

I also verified non-DT boot on the OMAP3 platforms that still support
legacy boot.

So feel free to also add

Tested-by: Kevin Hilman <khilman@...aro.org>

Thanks for your persistence in getting a fix for this upstream.

Kevin
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