linux-kernel - Re: [PATCH] Fix strange behavior of touchpad on Clevo NS70PU

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Message-ID: <878rgp4yy2.fsf@baylibre.com>
Date:   Wed, 22 Feb 2023 14:22:29 +0100
From:   Mattijs Korpershoek <mkorpershoek@...libre.com>
To:     Werner Sembach <wse@...edocomputers.com>,
        dmitry.torokhov@...il.com, hdegoede@...hat.com,
        wse@...edocomputers.com, chenhuacai@...nel.org, tiwai@...e.de,
        wsa+renesas@...g-engineering.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix strange behavior of touchpad on Clevo NS70PU

On lun., févr. 20, 2023 at 19:30, Werner Sembach <wse@...edocomputers.com> wrote:

> When closing the laptop lid with an external screen connected, the mouse
> pointer has a constant movement to the lower right corner. Opening the
> lid again stops this movement, but after that the touchpad does no longer
> register clicks.
>
> The touchpad is connected both via i2c-hid and PS/2, the predecessor of
> this device (NS70MU) has the same layout in this regard and also strange
> behaviour caused by the psmouse and the i2c-hid driver fighting over
> touchpad control. This fix is reusing the same workaround by just
> disabling the PS/2 aux port, that is only used by the touchpad, to give the
> i2c-hid driver the lone control over the touchpad.
>
> Signed-off-by: Werner Sembach <wse@...edocomputers.com>
> Cc: stable@...r.kernel.org

Reviewed-by: Mattijs Korpershoek <mkorpershoek@...libre.com>

> ---
>  drivers/input/serio/i8042-acpipnpio.h | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/drivers/input/serio/i8042-acpipnpio.h b/drivers/input/serio/i8042-acpipnpio.h
> index efc61736099b9..3a6640a11dd99 100644
> --- a/drivers/input/serio/i8042-acpipnpio.h
> +++ b/drivers/input/serio/i8042-acpipnpio.h
> @@ -1156,6 +1156,12 @@ static const struct dmi_system_id i8042_dmi_quirk_table[] __initconst = {
>  					SERIO_QUIRK_RESET_ALWAYS | SERIO_QUIRK_NOLOOP |
>  					SERIO_QUIRK_NOPNP)
>  	},
> +	{
> +		.matches = {
> +			DMI_MATCH(DMI_BOARD_NAME, "NS5x_7xPU"),
> +		},
> +		.driver_data = (void *)(SERIO_QUIRK_NOAUX)
> +	},
>  	{
>  		.matches = {
>  			DMI_MATCH(DMI_BOARD_NAME, "NJ50_70CU"),
> -- 
> 2.34.1