linux-kernel - [PATCH v6 7/7] HID: asus: add support for the asus-wmi brightness handler

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Message-ID: <20251013201535.6737-8-lkml@antheas.dev>
Date: Mon, 13 Oct 2025 22:15:35 +0200
From: Antheas Kapenekakis <lkml@...heas.dev>
To: platform-driver-x86@...r.kernel.org,
	linux-input@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <bentiss@...nel.org>,
	Corentin Chary <corentin.chary@...il.com>,
	"Luke D . Jones" <luke@...nes.dev>,
	Hans de Goede <hdegoede@...hat.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Denis Benato <benato.denis96@...il.com>,
	Antheas Kapenekakis <lkml@...heas.dev>
Subject: [PATCH v6 7/7] HID: asus: add support for the asus-wmi brightness
 handler

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@...nes.dev>
Tested-by: Luke D. Jones <luke@...nes.dev>
Signed-off-by: Antheas Kapenekakis <lkml@...heas.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 0af19c8ef035..1f904bb66396 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;
 }
 
-- 
2.51.0