linux-kernel - Re: [PATCH v6 0/6] Add ChromeOS Embedded Controller support

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Message-ID: <CAPnjgZ1PMFx-25kD-kyvZy+FC3dM=6U=dgBzctyAicZGfoD35w@mail.gmail.com>
Date:	Wed, 27 Feb 2013 16:25:22 -0800
From:	Simon Glass <sjg@...omium.org>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Rob Landley <rob@...dley.net>,
	Felipe Balbi <balbi@...com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Wolfram Sang <w.sang@...gutronix.de>,
	Luigi Semenzato <semenzato@...omium.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Che-Liang Chiou <clchiou@...omium.org>,
	Jonathan Kliegman <kliegs@...omium.org>,
	linux-input@...r.kernel.org, Sourav Poddar <sourav.poddar@...com>,
	devicetree-discuss@...ts.ozlabs.org,
	Alban Bedel <alban.bedel@...onic-design.de>,
	Roland Stigge <stigge@...com.de>,
	Vincent Palatin <vpalatin@...omium.org>,
	Javier Martinez Canillas <javier@...hile0.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-doc@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Tony Lindgren <tony@...mide.com>,
	Bill Pemberton <wfp5p@...ginia.edu>,
	Doug Anderson <dianders@...omium.org>,
	Olof Johansson <olofj@...omium.org>
Subject: Re: [PATCH v6 0/6] Add ChromeOS Embedded Controller support

Hi Samuel,

On Wed, Feb 27, 2013 at 12:40 AM, Samuel Ortiz <sameo@...ux.intel.com> wrote:
> Hi Simon,
>
> On Tue, Feb 26, 2013 at 09:13:06PM -0800, Simon Glass wrote:
>> Hi Samuel,
>>
>> On Mon, Feb 25, 2013 at 2:08 PM, Simon Glass <sjg@...omium.org> wrote:
>> > The ChromeOS Embedded Controller (EC) is an Open Source EC implementation
>> > used on ARM and Intel Chromebooks. Current implementations use a Cortex-M3
>> > connected on a bus (such as I2C, SPI, LPC) to the AP. A separate interrupt
>> > line is used to indicate when the EC needs service.
>> >
>> > Functions performed by the EC vary by platform, but typically include
>> > battery charging, keyboard scanning and power sequencing.
>> >
>> > This series includes support for the EC message protocol, and implements
>> > a matrix keyboard handler for Linux using the protocol. The EC performs
>> > key scanning and passes scan data in response to AP requests. This is
>> > used on the Samsung ARM Chromebook. No driver is available for LPC at
>> > present.
>> >
>> > This series can in principle operate on any hardware, but for it to actually
>> > work on the Samsung ARM Chromebook, it needs patches which are currently in
>> > progress to mainline: Exynos FDT interrupt support and I2C bus arbitration.
>> >
>> > The driver is device-tree-enabled and a suitable binding is included in
>> > this series. Example device tree nodes are included in the examples,
>> > but no device tree patch for exynos5250-snow is provided at this stage, since
>> > we must wait for the above-mentioned patches to land to avoid errors from
>> > dtc. This can be added with a follow-on patch when that work is complete.
>> >
>>
>> Are you happy with this series? Do you think it is ready to be picked
>> up for mfd?
> It probably is, and it will be part of the next merge window. I'll apply the
> after the merge window closes.

Thank you.

Regards,
Simon

>
> Cheers,
> Samuel.
>
> --
> Intel Open Source Technology Centre
> http://oss.intel.com/
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