From nobody Sun Feb 8 06:00:08 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (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 B4A27228C9D; Mon, 22 Dec 2025 01:40:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766367627; cv=none; b=EOuB+JCMXIi1Vw1y2fviHh/hxVL+BJH+KOneE6oiAdTtCTyCvJ2OlpLjZ0N+jWzTryEnAKGwprx6KnNChaLKh/eKUcwbrABwSTWAuzSWcJ0MIkBeijOFqQ4WkFkuz6ijiCr2VPlyc+oUn2CxzladqEHVhWShReqtuSw9FMCxQFo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766367627; c=relaxed/simple; bh=cxUTXdHuDJ7JiG1E1rHoRIedWf9fMtuIlhBIQpmXF1U=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=EqqsCDIf1mhd+2rLQkr42+mB8OqfdgozNq3ANqQ31CcVRq/bENJ7/D7H/5zM73ulCTF1hFHPlUqQsfIhmnROFll74WU+pHR9y44L8Br4Y41T6qZqxXvkdvptIrsVamZK9x/Pw/tfxGT+OAFyuQivRcUEazTOxb7NfqmNEIpBntY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=iyFJo29m; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="iyFJo29m" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766367626; x=1797903626; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=cxUTXdHuDJ7JiG1E1rHoRIedWf9fMtuIlhBIQpmXF1U=; b=iyFJo29mYAqGQF8kZ2nIrna1pGkQj7sVn+2DSVhpdrLZYVvHZTMmyCvy phR6mVuVVrvAj6a0oAOCiqfIyyajQrJCobTShygJuGMlURuRCdzHb7dqm ZQEkd0wrp6UNc8FyCoKaDGCkKTQLBc6a7fynjtb8wjXkaXDSTwUBmEO6q 0zV0M/8DE5+dDaFLN+eukZG+rVSPr9XOXmcvnHovutWx0IiceV6309QER T1XXSAINOMxuiVkQwaknM3BPxelSUMqyHJ+kc1ppbEJS6el5xmCouJZR7 J7h1uTHaQTW8ymahqzDicSz0c5AP+Bk/0RWFqACKBiSYg1RqY2OGRF0B8 w==; X-CSE-ConnectionGUID: 85VW/VoxQzafEhvYJOHQ5g== X-CSE-MsgGUID: py2gH0oEROmJ/BPiQ+5SNA== X-IronPort-AV: E=McAfee;i="6800,10657,11649"; a="85640715" X-IronPort-AV: E=Sophos;i="6.21,167,1763452800"; d="scan'208";a="85640715" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Dec 2025 17:40:26 -0800 X-CSE-ConnectionGUID: zqgq0BuoT3i7phqkXWKVkg== X-CSE-MsgGUID: 1NQqAxHXQNKjFVEwW9rh/g== X-ExtLoop1: 1 Received: from shsensorbuild.sh.intel.com ([10.239.132.250]) by fmviesa003.fm.intel.com with ESMTP; 21 Dec 2025 17:40:23 -0800 From: Even Xu To: bentiss@kernel.org, jikos@kernel.org Cc: srinivas.pandruvada@linux.intel.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Even Xu Subject: [PATCH] HID: Intel-thc-hid: Intel-quicki2c: Add power management for touch device Date: Mon, 22 Dec 2025 09:41:34 +0800 Message-Id: <20251222014134.1810253-1-even.xu@intel.com> X-Mailer: git-send-email 2.40.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Send POWER_SLEEP command to touch device when system enters into sleep mode or hibernate mode to save more power; and send POWER_ON command to take device back when system exits sleep mode. Signed-off-by: Even Xu --- .../intel-thc-hid/intel-quicki2c/pci-quicki2c.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/hid/intel-thc-hid/intel-quicki2c/pci-quicki2c.c b/driv= ers/hid/intel-thc-hid/intel-quicki2c/pci-quicki2c.c index 0156ab391778..c9fb7f71942f 100644 --- a/drivers/hid/intel-thc-hid/intel-quicki2c/pci-quicki2c.c +++ b/drivers/hid/intel-thc-hid/intel-quicki2c/pci-quicki2c.c @@ -809,6 +809,12 @@ static int quicki2c_suspend(struct device *device) if (!qcdev) return -ENODEV; =20 + if (!device_may_wakeup(qcdev->dev)) { + ret =3D quicki2c_set_power(qcdev, HIDI2C_SLEEP); + if (ret) + return ret; + } + /* * As I2C is THC subsystem, no register auto save/restore support, * need driver to do that explicitly for every D3 case. @@ -858,6 +864,9 @@ static int quicki2c_resume(struct device *device) if (ret) return ret; =20 + if (!device_may_wakeup(qcdev->dev)) + return quicki2c_set_power(qcdev, HIDI2C_ON); + return 0; } =20 @@ -915,6 +924,9 @@ static int quicki2c_poweroff(struct device *device) if (!qcdev) return -ENODEV; =20 + /* Ignore the return value as platform will be poweroff soon */ + quicki2c_set_power(qcdev, HIDI2C_SLEEP); + ret =3D thc_interrupt_quiesce(qcdev->thc_hw, true); if (ret) return ret; @@ -968,7 +980,7 @@ static int quicki2c_restore(struct device *device) =20 thc_change_ltr_mode(qcdev->thc_hw, THC_LTR_MODE_ACTIVE); =20 - return 0; + return quicki2c_set_power(qcdev, HIDI2C_ON); } =20 static int quicki2c_runtime_suspend(struct device *device) --=20 2.40.1