Re: çå: çå: çå: [PATCH] input: alps-fix the issue alps cs19 trackstick do not work.

From: Hui Wang
Date: Mon Jun 10 2019 - 23:28:22 EST

On 2019/6/11 äå11:05, 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.



Best Regards
åää: Pali RohÃr <pali.rohar@xxxxxxxxx>
åéæé: Monday, June 10, 2019 6:43 PM
æää: å ææ Xiaoxiao Liu <xiaoxiao.liu-1@xxxxxxxxxxx>
æé: XiaoXiao Liu <sliuuxiaonxiao@xxxxxxxxx>; dmitry.torokhov@xxxxxxxxx; peter.hutterer@xxxxxxxxx;; linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; æ æå Xiaojian Cao <xiaojian.cao@xxxxxxxxxxx>; zhangfp1@xxxxxxxxxx; æè çæ Naoki Saito <naoki.saito@xxxxxxxxxxxxxx>; åç èå Hideo Kawase <hideo.kawase@xxxxxxxxxxxxxx>
äé: Re: çå: çå: [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,

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.

Pali RohÃr