[PATCH] platform/x86: asus-nb-wmi: Ignore spurious 0xe5 events on GU605MY

[PATCH] platform/x86: asus-nb-wmi: Ignore spurious 0xe5 events on GU605MY

[Evgeny Volferts]

The ASUS ROG Zephyrus G16 GU605MY periodically emits an
unrecognized WMI event (0xe5), approximately every 12 seconds.

The event is reported as KEY_UNKNOWN through the Asus WMI hotkeys
input device. When the session is locked, it causes both the
internal display and an external monitor connected through a
Thunderbolt dock to wake up repeatedly.

Add a DMI-specific quirk to suppress this event on the GU605MY
without affecting other ASUS notebook models.

Ignoring the event was first verified on a 7.2.7-based OGC kernel.
The DMI-specific quirk was subsequently built against 7.2.8-ogc5
and tested on 7.2.9-ogc2 and 7.2.9-ogc4. On both 7.2.9 variants,
the DMI match was confirmed and the unknown 0xe5 event messages
disappeared.

Signed-off-by: Evgeny Volferts <eugene.wolferz@gmail.com>
---
 drivers/platform/x86/asus-nb-wmi.c | 17 +++++++++++++++++
 drivers/platform/x86/asus-wmi.h    |  1 +
 2 files changed, 18 insertions(+)

diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index aeb461b1644d..8d69231d25a0 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -150,6 +150,10 @@ static struct quirk_entry quirk_asus_zenbook_duo_kbd = {
 	.key_wlan_event = ASUS_WMI_KEY_IGNORE,
 };
 
+static struct quirk_entry quirk_asus_gu605my = {
+	.ignore_e5_wmi_event = true,
+};
+
 static struct quirk_entry quirk_asus_z13 = {
 	.key_wlan_event = ASUS_WMI_KEY_ARMOURY,
 	.tablet_switch_mode = asus_wmi_kbd_dock_devid,
@@ -562,6 +566,15 @@ static const struct dmi_system_id asus_quirks[] = {
 		},
 		.driver_data = &quirk_asus_z13,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "ASUS ROG Zephyrus G16 GU605MY",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ROG Zephyrus G16 GU605MY_GU605MY"),
+		},
+		.driver_data = &quirk_asus_gu605my,
+	},
 	{},
 };
 
@@ -690,6 +703,10 @@ static void asus_nb_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
 		if (quirks->key_wlan_event)
 			*code = quirks->key_wlan_event;
 		break;
+	case 0xE5:
+		if (quirks->ignore_e5_wmi_event)
+			*code = ASUS_WMI_KEY_IGNORE;
+		break;
 	}
 }
 
diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
index 5cd4392b964e..e7772397cd10 100644
--- a/drivers/platform/x86/asus-wmi.h
+++ b/drivers/platform/x86/asus-wmi.h
@@ -41,6 +41,7 @@ struct quirk_entry {
 	bool wmi_force_als_set;
 	bool wmi_ignore_fan;
 	bool filter_i8042_e1_extended_codes;
+	bool ignore_e5_wmi_event;
 	int key_wlan_event;
 	enum asus_wmi_tablet_switch_mode tablet_switch_mode;
 	int wapf;
-- 
2.56.0