linux-kernel - [PATCH 06/11] HID: asus: introduce small delay on Asus Z13 RGB init

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Message-ID: <20250319191320.10092-7-lkml@antheas.dev>
Date: Wed, 19 Mar 2025 20:13:14 +0100
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>,
	Antheas Kapenekakis <lkml@...heas.dev>
Subject: [PATCH 06/11] HID: asus: introduce small delay on Asus Z13 RGB init

The folio keyboard of the Z13 can get stuck in its BIOS mode, where the
touchpad behaves like a mouse and the keyboard start button is not
reliable if we perform the initialization too quickly. This mostly
happens during boot, and can be verified to be caused by hid-asus
through simple blacklisting. A small delay fixes it.

Signed-off-by: Antheas Kapenekakis <lkml@...heas.dev>
---
 drivers/hid/hid-asus.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 85ae75478b796..5b75ee83ae290 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -571,6 +571,10 @@ static int asus_kbd_register_leds(struct hid_device *hdev)
 	unsigned char kbd_func;
 	int ret;
 
+	/* Wait a bit before init to prevent locking the keyboard */
+	if (dmi_match(DMI_PRODUCT_FAMILY, "ROG Flow Z13"))
+		msleep(500);
+
 	ret = asus_kbd_init(hdev);
 	if (ret < 0)
 		return ret;
-- 
2.48.1