linux-kernel - Re: [PATCH v5 0/7] platform/chrome: Add user-space dev inferface support

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Date:	Thu, 26 Feb 2015 09:00:37 -0700
From:	Simon Glass <sjg@...omium.org>
To:	Olof Johansson <olof@...om.net>
Cc:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Lee Jones <lee.jones@...aro.org>,
	Doug Anderson <dianders@...omium.org>,
	Bill Richardson <wfrichar@...omium.org>,
	Gwendal Grignou <gwendal@...gle.com>,
	Jonathan Corbet <corbet@....net>,
	Varka Bhadram <varkabhadram@...il.com>,
	Paul Bolle <pebolle@...cali.nl>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	lk <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 0/7] platform/chrome: Add user-space dev inferface support

Hi Olof,

On 25 February 2015 at 17:59, Olof Johansson <olof@...om.net> wrote:
> On Tue, Feb 17, 2015 at 07:26:50PM -0700, Simon Glass wrote:
>> Hi,
>>
>> On 16 February 2015 at 01:19, Javier Martinez Canillas
>> <javier.martinez@...labora.co.uk> wrote:
>> > Hello Olof,
>> >
>> > On 02/02/2015 12:26 PM, Javier Martinez Canillas wrote:
>> >> Hello,
>> >>
>> >> The mainline ChromeOS Embedded Controller (EC) driver is still missing some
>> >> features that are present in the downstream ChromiumOS tree. These are:
>> >>
>> >>   - Low Pin Count (LPC) interface
>> >>   - User-space device interface
>> >>   - Access to vboot context stored on a block device
>> >>   - Access to vboot context stored on EC's nvram
>> >>   - Power Delivery Device
>> >>   - Support for multiple EC in a system
>> >>
>> >> This is a fifth version of a series that adds support for the first two of
>> >> the missing features: the EC LPC and EC character device interfaces that
>> >> are used by user-space to access the ChromeOS EC. The support patches were
>> >> taken from the downstream ChromiumOS 3.14 tree with the fixes and cleanups
>> >> squashed to have a minimal patch-set.
>> >>
>> >
>> > Any comments on this series? The last version was posted a couple of weeks
>> > ago but the series have been in the list for months. Lee has already acked
>> > the mfd changes so you can merge all through your chrome-platform tree if
>> > you want.
>> >
>> > It wold be great if this series get in to have the EC user-space interface
>> > supported and to minimize the delta with the Chromemium OS kernel since it
>> > still has other features that needs to be upstreamed like multiple EC in a
>> > system and access to vboot context stored in block device or EC's nvram.
>>
>> Are you sure Olof is the right maintainer for this going to mainline?
>
> Yes.
>
>> I do feel for you trying to get all this in and have seen your many
>> attempts. It has been in U-Boot for 18 months...I hope you get there
>> in the end.
>
> Cool, u-boot has userspace interfaces now? I didn't know that.

Not the 'User-space device interface', the other stuff :-) Anyway it
will be good to see this series in.

Regards,
Simon
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