[v9] HID: asus: Fix ASUS ROG Laptop's Keyboard backlight handling

[PATCH v9 11/11] HID: asus: add support for the asus-wmi brightness handler

Posted by Antheas Kapenekakis 1 week, 4 days ago

If the asus-wmi brightness handler is available, send the
keyboard brightness events to it instead of passing them
to userspace. If it is not, fall back to sending them to it.

Reviewed-by: Luke D. Jones <luke@ljones.dev>
Tested-by: Luke D. Jones <luke@ljones.dev>
Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev>
---
 drivers/hid/hid-asus.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 6a355c174f29..ff5aaebc38e3 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -324,6 +324,17 @@ static int asus_event(struct hid_device *hdev, struct hid_field *field,
 			 usage->hid & HID_USAGE);
 	}
 
+	if (usage->type == EV_KEY && value) {
+		switch (usage->code) {
+		case KEY_KBDILLUMUP:
+			return !asus_hid_event(ASUS_EV_BRTUP);
+		case KEY_KBDILLUMDOWN:
+			return !asus_hid_event(ASUS_EV_BRTDOWN);
+		case KEY_KBDILLUMTOGGLE:
+			return !asus_hid_event(ASUS_EV_BRTTOGGLE);
+		}
+	}
+
 	return 0;
 }
 
-- 
2.52.0

Re: [PATCH v9 11/11] HID: asus: add support for the asus-wmi brightness handler

Posted by Denis Benato 1 week, 4 days ago

On 11/20/25 10:46, Antheas Kapenekakis wrote:
> If the asus-wmi brightness handler is available, send the
> keyboard brightness events to it instead of passing them
> to userspace. If it is not, fall back to sending them to it.
>
> Reviewed-by: Luke D. Jones <luke@ljones.dev>
> Tested-by: Luke D. Jones <luke@ljones.dev>
> Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev>
> ---
>  drivers/hid/hid-asus.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
> index 6a355c174f29..ff5aaebc38e3 100644
> --- a/drivers/hid/hid-asus.c
> +++ b/drivers/hid/hid-asus.c
> @@ -324,6 +324,17 @@ static int asus_event(struct hid_device *hdev, struct hid_field *field,
>  			 usage->hid & HID_USAGE);
>  	}
>  
> +	if (usage->type == EV_KEY && value) {
> +		switch (usage->code) {
> +		case KEY_KBDILLUMUP:
> +			return !asus_hid_event(ASUS_EV_BRTUP);
> +		case KEY_KBDILLUMDOWN:
> +			return !asus_hid_event(ASUS_EV_BRTDOWN);
> +		case KEY_KBDILLUMTOGGLE:
> +			return !asus_hid_event(ASUS_EV_BRTTOGGLE);
> +		}
> +	}
> +
>  	return 0;
>  }
>  
Reviewed-by: Denis Benato <benato.denis96@gmail.com>