From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 037803BFACE; Wed, 1 Jul 2026 20:15:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782936948; cv=none; b=YYIOjmfvn7Z8JV1mDPdtb4TsCxsrog7yY3U8/r5FaDeHoJbuI+KM4l68MP69VrfGJemuk9TwJfyIVAI/DTW9xBeKs0GnhF1+UxF2Njv93n+WH1b65xS3Qy1BjC28PZ34d807v/Z7y0Z0MdUBF4WLN7PtZBrZVwq8B9UQPOUd+g0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782936948; c=relaxed/simple; bh=xpKgPGn7FASAl8THDfEQnPWCZu586ywBfc3bGU/xi4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XFk/De6yu9GcWn5QFSgzPY8XEOeLB+HBXOaZTMWpxZ1aiKMiKA2xxM0j+zKX/PBInzJFMpPlh1tNBNoC/DXrg7MI0T4sCa7QRvGANrsNWXTBMt15fYmVttWblk9fVZJJ1lWBemZks1G+0EIc5WilroVhDWuaR5usTVNy10OcDS4= 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=SIIQtiYY; arc=none smtp.client-ip=192.198.163.19 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="SIIQtiYY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1782936946; x=1814472946; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xpKgPGn7FASAl8THDfEQnPWCZu586ywBfc3bGU/xi4k=; b=SIIQtiYYlmKPJeCRS9jRI2ajgYWjQL9NfyZz/s+Mf+g6owLb5oRpK1tl jxm8qXwAbNtbxs6qdQFWcqrD4gu82Iz5oJD4OEBH49E+2wKQRf9IsIoIu 2jntIvjHco6ZH2d5yds0hnSDYhnhu/mYZLviNE0Q5/2ZEHWOgq7XxIL49 u6Bo8O3oP2ghNSPI+bbmETWOnUIUmGTBWSta1AhaF1uUYNx/AiJS3lHxd e7x5Gcx5swt7dqKHHNASNjEwAqeuOLNPdbanyJ54j5LEaYyitv8jwwX9U HdZIbxjkm3fcbrpgR8LmcV5YkkElLs/7VSzKMvJh6zpzZUSBjLspA4nfk w==; X-CSE-ConnectionGUID: dUdV3ohsRPu54dMQHR2sdA== X-CSE-MsgGUID: jt6pVbEBTlCxMVJbvvG/aw== X-IronPort-AV: E=McAfee;i="6800,10657,11834"; a="82671784" X-IronPort-AV: E=Sophos;i="6.25,142,1779174000"; d="scan'208";a="82671784" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2026 13:15:46 -0700 X-CSE-ConnectionGUID: bztpNFPZRFyTDZ929/440Q== X-CSE-MsgGUID: +wmrM7/hQ3uKWso7miGTEw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,142,1779174000"; d="scan'208";a="282737047" Received: from conormcd-mobl2.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.244.30]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2026 13:15:44 -0700 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.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 RFC RESEND 1/7] i3c: master: Support IBI-based wakeup capability Date: Wed, 1 Jul 2026 23:15:27 +0300 Message-ID: <20260701201533.220818-2-adrian.hunter@intel.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260701201533.220818-1-adrian.hunter@intel.com> References: <20260701201533.220818-1-adrian.hunter@intel.com> Precedence: bulk X-Mailing-List: linux-pci@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 --- drivers/i3c/master.c | 8 ++++++++ include/linux/i3c/master.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index f1be38a640ca..a47e2924bb70 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -1930,6 +1931,13 @@ i3c_master_register_new_i3c_devs(struct i3c_master_controller *master) if (desc->boardinfo) desc->dev->dev.of_node = desc->boardinfo->of_node; + /* + * In the case of IBI wakeup, any IBI-capable device can + * wakeup. + */ + if (master->ibi_wakeup && (desc->info.bcr & I3C_BCR_IBI_REQ_CAP)) + device_set_wakeup_capable(&desc->dev->dev, true); + ret = device_register(&desc->dev->dev); if (ret) { dev_err(&master->dev, diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h index 4d2a68793324..af3c35a8e7b6 100644 --- a/include/linux/i3c/master.h +++ b/include/linux/i3c/master.h @@ -511,6 +511,7 @@ 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 @@ -545,6 +546,7 @@ 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