linux-kernel - Re: [PATCH 2/3] Add support for monitoring gpio switches

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Message-ID: <20151204185713.GA22925@kroah.com>
Date:	Fri, 4 Dec 2015 10:57:13 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Martyn Welch <martyn.welch@...labora.co.uk>
Cc:	Arnd Bergmann <arnd@...db.de>, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, Olof Johansson <olof@...om.net>
Subject: Re: [PATCH 2/3] Add support for monitoring gpio switches

On Fri, Dec 04, 2015 at 05:31:14PM +0000, Martyn Welch wrote:
> Select Chromebooks have gpio attached to switches used to cause the
> firmware to enter alternative modes of operation and/or control other
> device characteristics (such as write protection on flash devices). This
> patch adds a driver that exposes a read-only interface to allow these
> signals to be read from user space.
> 
> This functionality has been generalised to provide support for any device
> with device tree support which needs to identify a gpio as being used for a
> specific task.
> 
> Signed-off-by: Martyn Welch <martyn.welch@...labora.co.uk>
> ---
>  drivers/misc/Kconfig       |  11 ++++
>  drivers/misc/Makefile      |   1 +
>  drivers/misc/gpio-switch.c | 160 +++++++++++++++++++++++++++++++++++++++++++++

Why isn't this in drivers/gpio/ ?

why make it a misc driver?

thanks,

greg k-h
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