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

[Yao Yuan <yaoyuan0329os@gmail.com>]

On Thu, Nov 12, 2026 at 05:26:46AM +0000, Jingle Wu 吳金國 wrote:
> Hi Yao:
>
> Upon inquiry, it was confirmed that a black TrackPoint stick (0x07) underneath the red TrackPoint cap corresponds to a vendor that is compatible with the Windows ELAN driver.

I received "Delivery Status Notification (Failure)" thus I just try again, please
ignore if it's duplicated mail there.

Hi Wu,

Now I see, Thanks a lot for your kind help on clarify this!

>
> THANKS
> JINGLE
>
> -----Original Message-----
> From: Yao Yuan <yaoyuan0329os@gmail.com>
> Sent: Wednesday, November 11, 2026 10:05 PM
> To: Jingle Wu 吳金國 <jingle.wu@emc.com.tw>
> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>; Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>; Vishnu Sankar <vishnuocv@gmail.com>; linux-input@vger.kernel.org; linux-kernel@vger.kernel.org; Phoenix Huang 黃世鵬 <phoenix@emc.com.tw>; Stanley Chen 陳建維 <stanley.chen@emc.com.tw>
> 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 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@gmail.com>
> > Sent: Tuesday, November 10, 2026 9:48 PM
> > To: Jingle Wu 吳金國 <jingle.wu@emc.com.tw>
> > Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>; Ilpo Järvinen
> > <ilpo.jarvinen@linux.intel.com>; Vishnu Sankar <vishnuocv@gmail.com>;
> > linux-input@vger.kernel.org; linux-kernel@vger.kernel.org; Phoenix
> > Huang 黃世鵬 <phoenix@emc.com.tw>; Stanley Chen 陳建維
> > <stanley.chen@emc.com.tw>
> > 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@gmail.com>
> > > Sent: Tuesday, November 10, 2026 10:36 AM
> > > To: Yuan Yao <yaoyuan0329os@gmail.com>; Jingle Wu 吳金國
> > > <jingle.wu@emc.com.tw>
> > > Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>; Vishnu Sankar
> > > <vishnuocv@gmail.com>; linux-input@vger.kernel.org;
> > > linux-kernel@vger.kernel.org; Phoenix Huang 黃世鵬
> > > <phoenix@emc.com.tw>; Stanley Chen 陳建維 <stanley.chen@emc.com.tw>
> > > 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@gmail.com>
> > > > ---
> > > >  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