[PATCH v2 0/1] Input/trackpoint: Add new JYT_NDT device variant id 7

[PATCH v2 0/1] Input/trackpoint: Add new JYT_NDT device variant id 7

[Yuan Yao]

The new trackpoint variant id 7 is found on Lenovo Thinkpad X14
Gen1 laptop(Product Name: 21XMA006CD), it belongs to JYT_NDT with
confirmation from Vishnu Sankar in Lenovo. Now it's incorrectly
probed as Generic or Logitech PS/2 mouse.

Add the variant id 7 to match the TP_READ_ID command return
value, probe the device as trackpoint correctly.

I tested the sensitivity/middle button lock/rate/resolution
setting, the trackpoint works well in daily usage and when
resume form system sleeping, no issue is found in my last
weeks usage.

BEFORE:
input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input63

AFTER:
psmouse serio1: trackpoint: JYT_NDT TrackPoint firmware: 0xa1, buttons: 3/3
input: TPPS/2 JYT_NDT TrackPoint as /devices/platform/i8042/serio1/input/input8

The patch is rebased to 7.4-rc1.

Changes from v1:

1. Change to correct vendor name JYT_NDT, with many thanks to
Dmitry Torokhov, Jingle Wu, Vishnu Sankar for helping on identify
the real vendor of this device.

v1: https://lore.kernel.org/all/20261102130836.11863-1-yaoyuan0329os@gmail.com/

Yuan Yao (1):
  Input: trackpoint - Add new TP JYT_NDT device variant id 7

 drivers/input/mouse/trackpoint.c | 2 ++
 drivers/input/mouse/trackpoint.h | 1 +
 2 files changed, 3 insertions(+)


base-commit: 6628e7d4c6b25c8d18f1345e3a20d21829aae7e4
--
2.56.0

[PATCH v2 1/1] Input: trackpoint - Add new TP JYT_NDT device variant id 7

[Yuan Yao]

The new trackpoint variant id 7 is found on Lenovo Thinkpad X14
Gen1 laptop(Product Name: 21XMA006CD), it belongs to JYT_NDT with
confirmation from Vishnu Sankar in Lenovo. now it's incorrectly
probed as Generic or Logitech PS/2 mouse.

Add the 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: JYT_NDT TrackPoint firmware: 0xa1, buttons: 3/3
input: TPPS/2 JYT_NDT TrackPoint as /devices/platform/i8042/serio1/input/input8

Signed-off-by: Yuan Yao <yaoyuan@linux.alibaba.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..2dde8cc5cab1 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_JYT_NDT]		= "JYT_NDT"
 };
 
 /*
@@ -285,6 +286,7 @@ static int trackpoint_start_protocol(struct psmouse *psmouse,
 	case TP_VARIANT_ELAN:
 	case TP_VARIANT_NXP:
 	case TP_VARIANT_JYT_SYNAPTICS:
+	case TP_VARIANT_JYT_NDT:
 	case TP_VARIANT_SYNAPTICS:
 		if (variant_id)
 			*variant_id = param[0];
diff --git a/drivers/input/mouse/trackpoint.h b/drivers/input/mouse/trackpoint.h
index 3e03cdb39449..2aa76311e400 100644
--- a/drivers/input/mouse/trackpoint.h
+++ b/drivers/input/mouse/trackpoint.h
@@ -30,6 +30,7 @@
 #define TP_VARIANT_NXP			0x04
 #define TP_VARIANT_JYT_SYNAPTICS	0x05
 #define TP_VARIANT_SYNAPTICS		0x06
+#define TP_VARIANT_JYT_NDT		0x07
 
 /*
  * Commands
-- 
2.56.0

Re: [PATCH v2 1/1] Input: trackpoint - Add new TP JYT_NDT device variant id 7

[Dmitry Torokhov]

On Fri, Nov 13, 2026 at 07:22:02PM +0800, Yuan Yao wrote:
> The new trackpoint variant id 7 is found on Lenovo Thinkpad X14
> Gen1 laptop(Product Name: 21XMA006CD), it belongs to JYT_NDT with
> confirmation from Vishnu Sankar in Lenovo. now it's incorrectly
> probed as Generic or Logitech PS/2 mouse.
> 
> Add the 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: JYT_NDT TrackPoint firmware: 0xa1, buttons: 3/3
> input: TPPS/2 JYT_NDT TrackPoint as /devices/platform/i8042/serio1/input/input8
> 
> Signed-off-by: Yuan Yao <yaoyuan@linux.alibaba.com>

Applied, thank you.

-- 
Dmitry