From nobody Fri Dec 19 15:59:28 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7FCFF2E8B73; Wed, 5 Nov 2025 23:22:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762384970; cv=none; b=rUmlrCAttxTUCb0aB07m5KlDg8OITrdO96z6rdW1upES0mcxGLHRqSkEV1sAZAO3XXwmyXlrORxJVzWBX/xicjHIzSqSjRkJ1ehRbqqra96cA+sjlSEW6Xzo6wAHqqrj7WqlubDFxB+7HEY0aeY4sJKCpDDyaoiHLB6vRxWZNzs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762384970; c=relaxed/simple; bh=EmTWfvkMbb3dqk19EtSTmtmk5e8i+zIt0u4oJLxsHjs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=BiGs+wosLvjlM76u2+5Zm8DOYzOwZ+qSX4K9Dk+nBmQhrzjnBySsz+sX+J1BRVWi8+k+TF46WZKkDIadYfA4YFL8zzmBx0Chpk611qsDlbgpSjqaZClPSq0uaiC4rtZUv3Gveefz3QwDQspR45zMgfDz2xlu5kA9XcBbbLyePTU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cTTJAevz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cTTJAevz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A73A0C116D0; Wed, 5 Nov 2025 23:22:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762384970; bh=EmTWfvkMbb3dqk19EtSTmtmk5e8i+zIt0u4oJLxsHjs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=cTTJAevzImaux51JW2HZmy2YyEBdDz+ooofjz1m77IKyWrAWqxioXwJQgzkjqQzmn EgppiLwRn7X/uoGqr6jq/K/O0zm+xSrEaWivgUdSY5Ix2C7wXvpMzm+bXjiziJPKye ohwFobH62LzXBjoKHFXz11fLOEAdNTRHaDX/8Bra+HwUTuzzFr/ePmuPyy6EBICk8F ErBL3dx2Fz0nbYI+kjKLpccPxJv6mM1I+yNesgQpIwhgAPMOS60gbRnFLwYZCkZFvl JxT743QtX7Z/SmFN2h6ksCiphJ5xAbigByX5aW+8RsLzifrOuI/Tt/YKSr0QfMFnQp BHE0xiSEURNmg== Received: by venus (Postfix, from userid 1000) id 486E6182F71; Thu, 06 Nov 2025 00:22:45 +0100 (CET) From: Sebastian Reichel Date: Thu, 06 Nov 2025 00:22:43 +0100 Subject: [PATCH 4/4] platform: arm64: thinkpad-t14s-ec: add suspend handler for keyboard backlight Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251106-thinkpad-t14s-ec-improvements-v1-4-109548ae75c0@collabora.com> References: <20251106-thinkpad-t14s-ec-improvements-v1-0-109548ae75c0@collabora.com> In-Reply-To: <20251106-thinkpad-t14s-ec-improvements-v1-0-109548ae75c0@collabora.com> To: Sebastian Reichel , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Bryan O'Donoghue Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1131; i=sebastian.reichel@collabora.com; h=from:subject:message-id; bh=EmTWfvkMbb3dqk19EtSTmtmk5e8i+zIt0u4oJLxsHjs=; b=owEBbQKS/ZANAwAKAdju1/PIO/qaAcsmYgBpC9xE23WsyRkwotKjWD39YBOIdf1avp0G6h6bS QXNCGFczMGJAjMEAAEKAB0WIQTvZg0HRj+Lcmp5VBPY7tfzyDv6mgUCaQvcRAAKCRDY7tfzyDv6 mhY/D/4yXQORCB7TVAaXYy1ssUkwErPaw1RNV62POFsRlwJWT4qUC3qhFdEaIeWg7r6CM+Jd9xy mqNH/mKTfh6ewBWUzAAt6PQ8FfF7Y3WzrTvC58NPGXF5IPL/QaK6t2fHNWznLQDiIvRASa3mWE2 L0PPMVcye5Ry8Utm3S5bt97HtjAKaaro9c/WditrAkRElrsxOrJyHRVyEVIKUAGo2fdWHVxyM49 ADHLLVx7PnnTNtJ880LhPX3yu9s7nJbiwJb29j94WZfIzvon/98XGkRypTFAJvG4huEwp5yQBKc SguFgJFz4T0qiVz2PISfPb3VknUm5ioapxXdjesThPTGGWaEnz81l43dWo0sIDIKh5c1YJpTedj aBA9Tpch3Tn+OYs1A8imduUCVZgYamVaZPp4GFZHXQhtDF3Loz3IBgx7CQc2AA3ebhbFrAdHctU cejWvObyodGenPjmxMe9PKqgna5XeIv4H5AyaPdjBRwgNo056iEnPeR50mfcqRrLDvXgP7JXwf1 zBXKCMMpjkXIJwte6rMtnuYgOqSgMKKHhyAgnqZX6drDFZOa58nCpnp9A2F49OqRz401QEw1T54 Lv68BXvqTKzIsmEQWvpfQiAoF/6dR9ATNMORBf5zfbOglHIg2iEz/PH6TvIzv6rbNNJG0f0lIO5 SHIxtpKYvST/xxA== X-Developer-Key: i=sebastian.reichel@collabora.com; a=openpgp; fpr=EF660D07463F8B726A795413D8EED7F3C83BFA9A This ensures that the keyboard backlight state is restored after a suspend-resume cycle. Otherwise the keyboard is automatically disabled during suspend and then stays disabled after resume. Signed-off-by: Sebastian Reichel --- drivers/platform/arm64/lenovo-thinkpad-t14s.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/platform/arm64/lenovo-thinkpad-t14s.c b/drivers/platfo= rm/arm64/lenovo-thinkpad-t14s.c index 066074a1314b..82c3ad6b3ee3 100644 --- a/drivers/platform/arm64/lenovo-thinkpad-t14s.c +++ b/drivers/platform/arm64/lenovo-thinkpad-t14s.c @@ -609,6 +609,8 @@ static int t14s_ec_suspend(struct device *dev) { struct t14s_ec *ec =3D dev_get_drvdata(dev); =20 + led_classdev_suspend(&ec->kbd_backlight); + t14s_ec_write_sequence(ec, T14S_EC_REG_MODERN_STANDBY, T14S_EC_MODERN_STANDBY_ENTRY, 3); =20 @@ -622,6 +624,8 @@ static int t14s_ec_resume(struct device *dev) t14s_ec_write_sequence(ec, T14S_EC_REG_MODERN_STANDBY, T14S_EC_MODERN_STANDBY_EXIT, 3); =20 + led_classdev_resume(&ec->kbd_backlight); + return 0; } =20 --=20 2.51.0