linux-kernel - Re: [PATCH v2 1/2] extcon: cros-ec: Add extcon-cros-ec driver to support display out.

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Date:   Tue, 23 May 2017 18:58:12 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Benson Leung <bleung@...omium.org>,
        Olof Johansson <olof@...om.net>
Subject: Re: [PATCH v2 1/2] extcon: cros-ec: Add extcon-cros-ec driver to
 support display out.

Hi,

On 2017년 05월 23일 18:52, Enric Balletbo i Serra wrote:
> 
> 
> On 23/05/17 11:46, Chanwoo Choi wrote:
>> Hi Enric,
>>
>> On 2017년 04월 20일 19:16, Enric Balletbo i Serra wrote:
>>> On 05/04/17 03:21, Chanwoo Choi wrote:
>>>> Hi Enric,
>>>>
>>>> On 2017년 03월 02일 16:29, Chanwoo Choi wrote:
>>>>> Hi,
>>>>>
>>>>> On 2017년 03월 01일 20:19, Enric Balletbo i Serra wrote:
>>>>>> From: Benson Leung <bleung@...omium.org>
>>>>>>
>>>>>> This is the driver for the USB Type C cable detection mechanism
>>>>>> built into the ChromeOS Embedded Controller on systems that
>>>>>> have USB Type-C ports.
>>>>>>
>>>>>> At present, this allows for the presence of display out, but in
>>>>>> future, it may also be used to notify host and device type cables
>>>>>> and the presence of power.
>>>>>>
>>>>>> Signed-off-by: Benson Leung <bleung@...omium.org>
>>>>>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
>>>>>> ---
>>>>>> Changes since v1:
>>>>>>  Requested by Chanwoo Choi
>>>>>>  - Rename files changing _ for -
>>>>>>  - Remove the unneeded blank line on bottom of header.
>>>>>>  - Remove kobject.h and cros_ec_commands.h includes.
>>>>>>  - Remove the debug message as is not necessary.
>>>>>>  - Use the tab for indentation instead of space for if sentence.
>>>>>>  - Define each variable on different lines when the variables should be
>>>>>>    initialized.
>>>>>>  - Remove EXTCON_USB and EXTCON_USB_HOST as are not really used for now.
>>>>>>  - Add one blank line to split out between state and property setting.
>>>>>>  - Add the author information (header and module)
>>>>>>
>>>>>>  Enric Balletbo
>>>>>>  - As Rob suggested to rename the compatible name to something indicating that
>>>>>>    is USB Type C related I also renamed the file names, extcon-cros-ec ->
>>>>>>    extcon-usbc-cros-ec, I think it's more clear.
>>>>>>
>>>>>>  drivers/extcon/Kconfig               |   7 +
>>>>>>  drivers/extcon/Makefile              |   1 +
>>>>>>  drivers/extcon/extcon-usbc-cros-ec.c | 415 +++++++++++++++++++++++++++++++++++
>>>>>>  include/linux/mfd/cros_ec_commands.h |  75 +++++++
>>>>>>  4 files changed, 498 insertions(+)
>>>>>>  create mode 100644 drivers/extcon/extcon-usbc-cros-ec.c
>>>>>>
>>>>>
>>>>> Looks good to me.
>>>>> Acked-by: Chanwoo Choi <cw00.chio@...sung.com>
>>>>>
>>>>> I think this patch should be handled with patches[1].
>>>>> [1] https://lkml.org/lkml/2017/2/14/655
>>>>>
>>>>> I think that one maintainer among following subsystems
>>>>> (mfd, chrome h/w platform, rtc and extcon)
>>>>> will apply their git repository, and then one maintainer
>>>>> will send the pull request of immutable branch for these patches.
>>>>>
>>>>
>>>> As I mentioned, these patch should be handled with related patches[1].
>>>> [1] https://lkml.org/lkml/2017/2/14/655
>>>>
>>>> So, I can't apply these patch on extcon git because there is a merge conflict
>>>> and we should handle these patches with immutable branch between subsystem maintainer.
>>>>
>>>> The v4.11-rc5 was released, if you want to apply this patch to the v4.12-rc1,
>>>> please take care of these patches.
>>>>
>>>
>>> CC'ied : Olof Johansson
>>>
>>> Olof, Benson,
>>>
>>> Could at least the following patch in this series [1] picked as soon as possible
>>> if it's ok.
>>>
>>> 9630769 New          [01/13] mfd: cros_ec: Add helper for event notifier
>>>
>>> This specific patch is blocking this and others like the rtc-cros-ec to land and
>>> the series were send some time ago without received bad feedback.
>>>
>>> [1] https://lkml.org/lkml/2017/3/17/321
>>>
>>> Many thanks,
>>>  Enric
>>
>> Maybe, you better to resend these patches based on v4.12-rcX.
>>
> 
> I did a week ago :) The patches were rebased on top of current linux-next,
> waiting for the maintainers, hope will be accepted soon so we can unblock this
> patch and the rtc patches.
> 
> https://lkml.org/lkml/2017/5/16/478
> 

OK. This patch must need the immutable branch.

I expect that some maintainer will make the immutable branch
and then send pull request to other maintainer related to them.

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics