Re: [PATCH v6 0/6] Add ChromeOS Embedded Controller support
From: Simon Glass
Date: Wed Feb 27 2013 - 19:25:33 EST
On Wed, Feb 27, 2013 at 12:40 AM, Samuel Ortiz <sameo@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxx> 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.
> Intel Open Source Technology Centre
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