linux-kernel - [PATCH v2 2/2] dell-wmi-base: Handle META key Lock/Unlock events

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Message-ID: <20241031154441.6663-2-kuurtb@gmail.com>
Date: Thu, 31 Oct 2024 12:44:42 -0300
From: Kurt Borja <kuurtb@...il.com>
To: kuurtb@...il.com
Cc: Dell.Client.Kernel@...l.com,
	hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com,
	linux-kernel@...r.kernel.org,
	pali@...nel.org,
	platform-driver-x86@...r.kernel.org,
	w_armin@....de
Subject: [PATCH v2 2/2] dell-wmi-base: Handle META key Lock/Unlock events

Some Alienware devices have a key that locks/unlocks the Meta key. This
key triggers a WMI event that should be ignored by the kernel, as it's
handled by internally the firmware.

There is no known way of changing this default behavior. The firmware
would lock/unlock the Meta key, regardless of how the event is handled.

Tested on an Alienware x15 R1.

Signed-off-by: Kurt Borja <kuurtb@...il.com>
---
v2:
 - Fixed entry style
 - Commit message clarifies firmware behavior
 - Commit message now has "Tested on"
---
 drivers/platform/x86/dell/dell-wmi-base.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/platform/x86/dell/dell-wmi-base.c b/drivers/platform/x86/dell/dell-wmi-base.c
index 502783a7a..ce421e51b 100644
--- a/drivers/platform/x86/dell/dell-wmi-base.c
+++ b/drivers/platform/x86/dell/dell-wmi-base.c
@@ -80,6 +80,12 @@ static const struct dmi_system_id dell_wmi_smbios_list[] __initconst = {
 static const struct key_entry dell_wmi_keymap_type_0000[] = {
 	{ KE_IGNORE, 0x003a, { KEY_CAPSLOCK } },
 
+	/* Meta key lock */
+	{ KE_IGNORE, 0xe000, { KEY_RIGHTMETA } },
+
+	/* Meta key unlock */
+	{ KE_IGNORE, 0xe001, { KEY_RIGHTMETA } },
+
 	/* Key code is followed by brightness level */
 	{ KE_KEY,    0xe005, { KEY_BRIGHTNESSDOWN } },
 	{ KE_KEY,    0xe006, { KEY_BRIGHTNESSUP } },
-- 
2.47.0