linux-kernel - [PATCH] platform/x86: asus-nb-wmi: Add keymap for display toggle

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Message-ID: <20251221181724.19927-1-timwassink.dev@gmail.com>
Date: Sun, 21 Dec 2025 19:17:14 +0100
From: Tim Wassink <timwassink.dev@...il.com>
To: platform-driver-x86@...r.kernel.org
Cc: Tim Wassink <timwassink.dev@...il.com>,
	Corentin Chary <corentin.chary@...il.com>,
	"Luke D. Jones" <luke@...nes.dev>,
	Denis Benato <benato.denis96@...il.com>,
	Hans de Goede <hansg@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] platform/x86: asus-nb-wmi: Add keymap for display toggle

On the Asus Zenbook 14 (UX3405MA), the Fn+F7 key combination emits
WMI code 0x2d, which was previously unmapped.

Map this code to KEY_DISPLAYTOGGLE. This matches the behavior of the
display toggle/projector mode key found on other Asus laptops, allowing
userspace to handle multi-monitor switching or screen toggling.

Tested on ASUS Zenbook 14 UX3405MA.

Signed-off-by: Tim Wassink <timwassink.dev@...il.com>
---
 drivers/platform/x86/asus-nb-wmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index 6a62bc5b02fd..a38a65f5c550 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -580,6 +580,7 @@ static const struct key_entry asus_nb_wmi_keymap[] = {
 	{ KE_KEY, 0x2a, { KEY_SELECTIVE_SCREENSHOT } },
 	{ KE_IGNORE, 0x2b, }, /* PrintScreen (also send via PS/2) on newer models */
 	{ KE_IGNORE, 0x2c, }, /* CapsLock (also send via PS/2) on newer models */
+	{ KE_KEY, 0x2d, { KEY_DISPLAYTOGGLE } },
 	{ KE_KEY, 0x30, { KEY_VOLUMEUP } },
 	{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
 	{ KE_KEY, 0x32, { KEY_MUTE } },
-- 
2.52.0