From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) (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 C78F73769E4; Thu, 6 Aug 2026 13:19:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786022383; cv=none; b=TAWGCM2YU1oiQJ59JKdCLElHWGJaTCAQlFnaLetormRZIafYjYWoS0wbUqeOc+lWHMYHZKtEcLMhpHCWi5uLN/irmI4Vr2j6RBl/QS0lsuB4zU4wDdMb0d/vsdU5u13amiT0S7A0KRWc1kQ6maIyd41dUUPlJuD2LDsGF2bZWow= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786022383; c=relaxed/simple; bh=/i0Yn5fg2OAPraeuV4Q5SOyPrE1P3/F/uvz9vi20wXo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jARmrhEbnzogvmf3eFFOk+vrA0s2g76bjtS6wcnkem+5KZRLSuofF4z6g1m7c3dqF67yh24rvI7hMwDjpEDv8kWjSUGzcukU6oa21JpSe6VrzGwYZlsqstFHlWk68oaCrfG6fjsRb2th58lZ05SxsF1zbjoFL+f2tlJSbc62wbc= 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=cDBodqv1; arc=none smtp.client-ip=192.198.163.16 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="cDBodqv1" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786022378; x=1817558378; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/i0Yn5fg2OAPraeuV4Q5SOyPrE1P3/F/uvz9vi20wXo=; b=cDBodqv1lQRJR+8wFj9xC23Yuxpk5M7VCKOavFWDk31nyxG0w8wc6+e2 rIju1kDBa+Kb79AbzWEicKF26Ej5or7qpbUE3gpusw84rqzssP96L5TYg cTDmNZ8EXotZSl4iC9F5q9QezERFPKmht8IN1Ya4FAn1xOQCz+q4Czve9 YT7GvgKtqvklqFv8SB6XP4e+t1ijjOh7iM7nFZJnhMNVpmNNTZw8IUb2h l24Rv1BCGT+o6Rq0w8PXBfuyo7r+aYUSF+geRGD/HVec1GfqmxJ0Ct9CQ iNHmIdiohUiIH2RymojAgEChnSroAU3tagJfbpDIQk4DagdD1dVsQK4Uv g==; X-CSE-ConnectionGUID: atWiyGMAQfCHnPg9yukTgA== X-CSE-MsgGUID: 8gKqYH+cTxWjcuqoaSHeGQ== X-IronPort-AV: E=McAfee;i="6800,10657,11867"; a="74149602" X-IronPort-AV: E=Sophos;i="6.25,208,1779174000"; d="scan'208";a="74149602" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Aug 2026 06:19:31 -0700 X-CSE-ConnectionGUID: FIeopfLGQG29bRMHq5QZgQ== X-CSE-MsgGUID: YmKWhKUHR3qlAG8A/YfDJA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,208,1779174000"; d="scan'208";a="260338203" Received: from mkosciow-mobl1.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.244.200]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Aug 2026 06:19:29 -0700 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, akhilrajeev@nvidia.com, mukesh.savaliya@oss.qualcomm.com, rafael@kernel.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH V4 08/14] i3c: master: Support IBI-based wakeup capability Date: Thu, 6 Aug 2026 16:18:51 +0300 Message-ID: <20260806131857.119830-9-adrian.hunter@intel.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260806131857.119830-1-adrian.hunter@intel.com> References: <20260806131857.119830-1-adrian.hunter@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Content-Transfer-Encoding: 8bit An I3C controller acts as a bus controller for one or more I3C devices. If the controller can wake the system in response to an In-Band Interrupt (IBI), then any device on that bus that is capable of generating IBIs can potentially be used as a wakeup source. Add an ibi_wakeup flag to struct i3c_master_controller so controller drivers can advertise support for IBI-based wakeup. If set, mark IBI-capable I3C devices as wakeup capable when they are registered, allowing wakeup management through the standard device wakeup framework. Signed-off-by: Adrian Hunter Reviewed-by: Frank Li --- Changes in V4: Shortened the comment about IBI-capable devices being wakeup capable. Changes in V3: None Changes in V2: Dropped the redundant #include . That header must not be included directly, and linux/device.h, which is already included, provides device_set_wakeup_capable(). drivers/i3c/master.c | 4 ++++ include/linux/i3c/master.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 83e04a2c202a..2616354dbe54 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2110,6 +2110,10 @@ i3c_master_register_new_i3c_devs(struct i3c_master_controller *master) if (desc->boardinfo) device_set_node(&desc->dev->dev, desc->boardinfo->fwnode); + /* If the device has IBI capability, set as wakeup capable */ + if (master->ibi_wakeup && (desc->info.bcr & I3C_BCR_IBI_REQ_CAP)) + device_set_wakeup_capable(&desc->dev->dev, true); + list_add_tail(&desc->dev->node, &i3c_unreg_devs); } diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h index 26535beb1e77..9d675d01522c 100644 --- a/include/linux/i3c/master.h +++ b/include/linux/i3c/master.h @@ -524,6 +524,7 @@ struct i3c_master_controller_ops { * @hotjoin: true if the master support hotjoin * @rpm_allowed: true if Runtime PM allowed * @rpm_ibi_allowed: true if IBI and Hot-Join allowed while runtime suspended + * @ibi_wakeup: IBI can wakeup the system * @shutting_down: set to true when master begins shutdown or unregister * @boardinfo.i3c: list of I3C boardinfo objects * @boardinfo.i2c: list of I2C boardinfo objects @@ -563,6 +564,7 @@ struct i3c_master_controller { unsigned int hotjoin: 1; unsigned int rpm_allowed: 1; unsigned int rpm_ibi_allowed: 1; + unsigned int ibi_wakeup: 1; bool shutting_down; struct { struct list_head i3c; -- 2.53.0