linux-kernel - Re: [PATCH 02/11] GPIO: DA9052 GPIO module v1

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Message-ID: <20110630152852.GC3249@opensource.wolfsonmicro.com>
Date:	Thu, 30 Jun 2011 08:32:45 -0700
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Ashish Jangam <Ashish.Jangam@...tcummins.com>
Cc:	"jic23@....ac.uk" <jic23@....ac.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dajun <dajun.chen@...semi.com>,
	"grant@...retlab.ca" <grant@...retlab.ca>
Subject: Re: [PATCH 02/11] GPIO: DA9052 GPIO module v1

On Thu, Jun 30, 2011 at 05:10:31PM +0530, Ashish Jangam wrote:

> > Why insist on platform data?  gpiolib can dynamically allocate a GPIO
> > range to the device.

> Do you mean to use gpiochip_reserve() in machine file and not to have
> ngpio and base defined in GPIO platform driver but, this will fail the
> call to gpiochip_add()?

No, I mean that you should allow gpiolib to allocate a GPIO range if one
is not already allocated like other gpiolib drivers do by supplying -1
as the base.
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