Re: [PATCH 1/1] Input: trackpoint - Add new ELAN trackpoint device variant id 7

[Yao Yuan]

On Wed, Nov 11, 2026 at 05:26:36AM +0000, Jingle Wu 吳金國 wrote:
> Hi Yao:
>
> Could you help verify whether the color of the TrackPoint stick underneath the red cap can be used to identify the vendor?
>
> White: ELAN
> Other colors: Other vendors

Hi Wu,

The thin stick under the red cap is black.

Also I visited the lenovo's supporting website, there's only
1 ELAN dirver for this thinkpad X14 gen1 model's trackpoint:

https://newthink.lenovo.com.cn/driveList.html?selname=ThinkPad%20X14%20Gen1

The laptop model I'm using is 21XM, the driver works well in
windows 11.

Now I'm confused on who is the real vendor of this
trackpoint device. I may ask help on Lenovo's supporting
website yet. Wu, is that ok to refer this mail there ?

>
> Thanks
> JINGLE
>
> -----Original Message-----
> From: Yao Yuan <yaoyuan0329os@xxxxxxxxx>
> Sent: Tuesday, November 10, 2026 9:48 PM
> To: Jingle Wu 吳金國 <jingle.wu@xxxxxxxxxx>
> Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>; Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>; Vishnu Sankar <vishnuocv@xxxxxxxxx>; linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Phoenix Huang 黃世鵬 <phoenix@xxxxxxxxxx>; Stanley Chen 陳建維 <stanley.chen@xxxxxxxxxx>
> Subject: Re: [PATCH 1/1] Input: trackpoint - Add new ELAN trackpoint device variant id 7
>
> ⚠ External Email: This email originated from outside the organization. Please use caution when opening links or attachments.
> ⚠ 外部郵件： 此郵件來自公司外部，請謹慎開啟連結或附件。
>
> On Tue, Nov 10, 2026 at 05:26:21AM +0000, Jingle Wu 吳金國 wrote:
>
> Hi Wu,
>
> > Hi Dmitry/Yuan:
> >
> > We have confirmed that FW A1 was never released by Elan. The Elan Variant ID has always been 3.
>
> Thanks for your information, Let me share more details:
>
> The trackpoint has driver from "ELAN
> Microelectronics Corp." in windows 11 on same device.
>
> In Linux I found the device is probed as generic mouse device but not trackpoint device, it's hard to use due to no sensitivity setting from sysfs. I found the reported id
> 0x7 is not in drivers/input/mouse/trackpoint.c's
> trackpoint_start_protocol() after debugging, the trackpoint is probed and works well after add the id 0x7 there.
>
> So I thought this should be a ELAN device w/ ID 0x7 and cooked this patch.
>
>
> >
> > THANKS
> > JINGLE
> >
> > -----Original Message-----
> > From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> > Sent: Tuesday, November 10, 2026 10:36 AM
> > To: Yuan Yao <yaoyuan0329os@xxxxxxxxx>; Jingle Wu 吳金國
> > <jingle.wu@xxxxxxxxxx>
> > Cc: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>; Vishnu Sankar
> > <vishnuocv@xxxxxxxxx>; linux-input@xxxxxxxxxxxxxxx;
> > linux-kernel@xxxxxxxxxxxxxxx; Phoenix Huang 黃世鵬 <phoenix@xxxxxxxxxx>;
> > Stanley Chen 陳建維 <stanley.chen@xxxxxxxxxx>
> > Subject: Re: [PATCH 1/1] Input: trackpoint - Add new ELAN trackpoint
> > device variant id 7
> >
> > ⚠ External Email: This email originated from outside the organization. Please use caution when opening links or attachments.
> > ⚠ 外部郵件： 此郵件來自公司外部，請謹慎開啟連結或附件。
> >
> > Hi Yuan,
> >
> > On Mon, Nov 02, 2026 at 09:08:36PM +0800, Yuan Yao wrote:
> > > The new ELAN trackpoint variant id 7 is found on thinkpad
> > > X14 Gen1 laptop(Product Name: 21XMA006CD), it's now incorrectly
> > > probed as Generic or Logitech PS/2 mouse.
> > >
> > > Add ELAN variant id 7 to match the TP_READ_ID command return value,
> > > probe the device as trackpoint correctly.
> > >
> > > BEFORE:
> > > input: PS/2 Generic Mouse as
> > > /devices/platform/i8042/serio1/input/input63
> > >
> > > AFTER:
> > > psmouse serio1: trackpoint: Elan_variant7 TrackPoint firmware: 0xa1,
> > > buttons: 3/3
> > > input: TPPS/2 Elan_variant7 TrackPoint as
> > > /devices/platform/i8042/serio1/input/input65
> > >
> > > Signed-off-by: Yuan Yao <yaoyuan0329os@xxxxxxxxx>
> > > ---
> > >  drivers/input/mouse/trackpoint.c | 2 ++
> > > drivers/input/mouse/trackpoint.h | 1 +
> > >  2 files changed, 3 insertions(+)
> > >
> > > diff --git a/drivers/input/mouse/trackpoint.c
> > > b/drivers/input/mouse/trackpoint.c
> > > index 3bd8fdf56cd3..f46fc1665c96 100644
> > > --- a/drivers/input/mouse/trackpoint.c
> > > +++ b/drivers/input/mouse/trackpoint.c
> > > @@ -25,6 +25,7 @@ static const char * const trackpoint_variants[] = {
> > >       [TP_VARIANT_NXP]                = "NXP",
> > >       [TP_VARIANT_JYT_SYNAPTICS]      = "JYT_Synaptics",
> > >       [TP_VARIANT_SYNAPTICS]          = "Synaptics",
> > > +     [TP_VARIANT_ELAN_ID_7]          = "Elan_variant7"
> >
> > I wonder if we really need to say "Elan_variant7" or if we should simply say "Elan" here as well.
> >
> > Jingle, is this your part? What is the difference from Elan trackpoint reporting 0x03 as its variant?
> >
> > Thanks.
> >
> > --
> > Dmitry