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To:     Xiaoxiao Liu <xiaoxiao.liu-1@cn.alps.com>,
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Cc:     XiaoXiao Liu <sliuuxiaonxiao@gmail.com>,
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        Xiaojian Cao <xiaojian.cao@cn.alps.com>,
        "zhangfp1@lenovo.com" <zhangfp1@lenovo.com>,
        Naoki Saito <naoki.saito@alpsalpine.com>,
        Hideo Kawase <hideo.kawase@alpsalpine.com>
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From:   Hui Wang <hui.wang@canonical.com>
Message-ID: <ed65f8af-fefb-3c40-e7b1-dde3605f30e3@canonical.com>
Date:   Tue, 11 Jun 2019 11:23:34 +0800
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On 2019/6/11 上午11:05, Xiaoxiao Liu wrote:
> Hi Pali,
>
> I discussed with our FW team about this problem.
> We think the V8 method means a touchpad feature  and does not fit the CS19 trackpoint device.
> CS19 TrackPoint needn't  use any Absolute (Raw) mode and is usually use standard mouse data.
> CS19 TrackPoint device is a completely different device with DualPoint device of Dell/HP.
> CS19 TrackPoint device is independent  of Touchpad. (Touchpad is connecting by I2C, TrackPoint is directly connecting with PS2 port.)
> And it has completely another FW.
>
> So we think it is better to use the mouse mode for CS19 trackpoint.

Maybe here is some mis-understanding,  the mouse mode here doesn't mean 
we use psmouse-base.c for cs19 (bare ps/2 mouse), we plan to use 
trackpoint.c to drive this HW, so this trackpoint has all features a 
trackpoint should have.

Regards,

Hui.

>
> Best Regards
> Shona
> -----邮件原件-----
> 发件人: Pali Rohár <pali.rohar@gmail.com>
> 发送时间: Monday, June 10, 2019 6:43 PM
> 收件人: 劉 曉曉 Xiaoxiao Liu <xiaoxiao.liu-1@cn.alps.com>
> 抄送: XiaoXiao Liu <sliuuxiaonxiao@gmail.com>; dmitry.torokhov@gmail.com; peter.hutterer@who-t.net; hui.wang@canonical.com; linux-input@vger.kernel.org; linux-kernel@vger.kernel.org; 曹 曉建 Xiaojian Cao <xiaojian.cao@cn.alps.com>; zhangfp1@lenovo.com; 斉藤 直樹 Naoki Saito <naoki.saito@alpsalpine.com>; 川瀬 英夫 Hideo Kawase <hideo.kawase@alpsalpine.com>
> 主题: Re: 答复: 答复: [PATCH] input: alps-fix the issue alps cs19 trackstick do not work.
>
> On Monday 10 June 2019 10:03:51 Xiaoxiao Liu wrote:
>> Hi Pali,
> Hi!
>
>> We register our CS19 device as ALPS_ONLY_TRACKSTICK device.
>> And let the V8 protocol function support the process of ALPS_ONLY_TRACKSTICK device.
>>
>> I want to confirm if this solution OK?
> Yes, it is fine. Just make sure that touchapad input device is not registered when this ALPS_ONLY_TRACKSTICK flag is set. So userspace would not see any fake/unavailable touchpad input device.
>
>> Xiaoxiao.Liu
> --
> Pali Rohár
> pali.rohar@gmail.com