Re: [PATCH v11 17/18] HID: asus: report the XG Mobile GPU vendor to asus-wmi

[Ilpo Järvinen]

On Sun, 25 Oct 2026, Denis Benato wrote:

> The version query answers with the 4-part PCI ID of the GPU installed
> in the station. Parse it, report its vendor part to asus-wmi as soon
> as the station is identified and clear it when the station goes away,
> so that enabling the eGPU through egpu_enable composes the right
> activation value for NVIDIA, AMD and Intel stations alike.
> 
> Signed-off-by: Denis Benato <denis.benato@xxxxxxxxx>
> ---
>  drivers/hid/hid-asus.c | 18 ++++++++++++++++--
>  1 file changed, 16 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
> index e444cad85b32..244d103fbd4c 100644
> --- a/drivers/hid/hid-asus.c
> +++ b/drivers/hid/hid-asus.c
> @@ -186,6 +186,7 @@ struct asus_xgm_info {
>  	char part_number[ASUS_XGM_INFO_LEN];
>  	char firmware_version[ASUS_XGM_INFO_LEN];
>  	char generation[ASUS_XGM_INFO_LEN];
> +	u8 gpu_id[4];
>  };
>  
>  struct asus_touchpad_info {
> @@ -6313,6 +6314,12 @@ static int asus_xgm_get_version(struct hid_device *hdev,
>  	asus_xgm_tlv_str(info->firmware_version, sizeof(info->firmware_version),
>  			 buf, len, "VER");
>  
> +	/* the 4-part PCI ID of the GPU installed in the station: buf[3..10] */
> +	if (len < 11)
> +		return -ENODATA;
> +
> +	memcpy(info->gpu_id, buf + 3, sizeof(info->gpu_id));

Is this 3 also related to tag length (the literals comment I had to the 
other patch)?

--
 i.

> +
>  	return 0;
>  }
>  
> @@ -6685,6 +6692,8 @@ static int asus_xgm_init(struct hid_device *hdev, struct asus_drvdata *drvdata)
>  		hid_info(hdev, "XG Mobile: firmware %s, generation %s\n",
>  			 info->firmware_version, info->generation);
>  
> +	asus_wmi_egpu_set_vendor(info->gpu_id[0]);
> +
>  	/*
>  	 * The attribute group is not devm-managed: a creation failure is
>  	 * fatal and unwound through asus_xgm_init_err, while on the unbind
> @@ -6732,6 +6741,7 @@ static int asus_xgm_init(struct hid_device *hdev, struct asus_drvdata *drvdata)
>  
>  	return 0;
>  asus_xgm_init_err:
> +	asus_wmi_egpu_set_vendor(0);
>  	sysfs_remove_group(&hdev->dev.kobj, &asus_xgm_attr_group);
>  	drvdata->xgm_info = NULL;
>  	drvdata->xgm_led = NULL;
> @@ -6951,8 +6961,10 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
>  	if (drvdata->listener.brightness_set)
>  		asus_hid_unregister_listener(&drvdata->listener);
>  
> -	if (drvdata->xgm_info)
> +	if (drvdata->xgm_info) {
> +		asus_wmi_egpu_set_vendor(0);
>  		sysfs_remove_group(&hdev->dev.kobj, &asus_xgm_attr_group);
> +	}
>  
>  	if (drvdata->xgm_led)
>  		devm_led_classdev_unregister(&hdev->dev, &drvdata->xgm_led->cdev);
> @@ -6972,8 +6984,10 @@ static void asus_remove(struct hid_device *hdev)
>  	if (drvdata->listener.brightness_set)
>  		asus_hid_unregister_listener(&drvdata->listener);
>  
> -	if (drvdata->xgm_info)
> +	if (drvdata->xgm_info) {
> +		asus_wmi_egpu_set_vendor(0);
>  		sysfs_remove_group(&hdev->dev.kobj, &asus_xgm_attr_group);
> +	}
>  
>  	if (drvdata->xgm_led)
>  		devm_led_classdev_unregister(&hdev->dev, &drvdata->xgm_led->cdev);
>