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

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

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