linux-kernel - [PATCH v2 1/2] Input: allocate a keycode for Fn+space

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Message-Id: <20250714150756.21197-2-anton@khirnov.net>
Date: Mon, 14 Jul 2025 17:07:57 +0200
From: Anton Khirnov <anton@...rnov.net>
To: Corentin Chary <corentin.chary@...il.com>,
	"Luke D. Jones" <luke@...nes.dev>,
	Hans de Goede <hansg@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-input@...r.kernel.org
Subject: [PATCH v2 1/2] Input: allocate a keycode for Fn+space

The Asus ExpertBook B9 laptop sends a WMI event when Fn+space is
pressed. Since I could not find any information on what this combination
is intended to do on this or any other Asus laptop, allocate a
KEY_FN_SPACE keycode for it.

Signed-off-by: Anton Khirnov <anton@...rnov.net>
---
 include/uapi/linux/input-event-codes.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index 3b2524e4b667..a49b0782fd8a 100644
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h
@@ -548,6 +548,7 @@
 #define KEY_FN_S		0x1e3
 #define KEY_FN_B		0x1e4
 #define KEY_FN_RIGHT_SHIFT	0x1e5
+#define KEY_FN_SPACE		0x1e6
 
 #define KEY_BRL_DOT1		0x1f1
 #define KEY_BRL_DOT2		0x1f2
-- 
2.39.5