From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9EA92C43458 for ; Wed, 1 Jul 2026 20:15:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=mMeHt+Uq35fKFmQudBAFLXOs0eEqrrTVCi6v52IR1kM=; b=BoJsszM4Jvwtz9 mURDGimkk6fxmDMvtc9819fwUJK89BwK0s5kepvAzp71B7QR/JcORUoJ9v/6w5mDUj8o+K8b1lvaJ 23eAmX99uQigzE29L6R8nyZLY81oIhRtyWZaaPYZLx68ryHqES9HuBGIbm+olw6ygI9pqEowgg9XD qiPFtIRxtFLivxj4T8FG62DJhmpzyWi022GxqYVuHO7dBamHfCT9kduLzgfYQqnSdcQUeKjONZgrB 6jYOUcw+jcK0Mou2Msf+umjzRogKgqBIBGlXBdlfgdOErsei3py0UT0VQQrRRz/s2id3Fj34golvk oy5CPMlGipNJaCBoUk4w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wf1LX-00000002x7M-1fOX; Wed, 01 Jul 2026 20:15:47 +0000 Received: from mgamail.intel.com ([192.198.163.19]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wf1LV-00000002x67-46Do for linux-i3c@lists.infradead.org; Wed, 01 Jul 2026 20:15:47 +0000 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: 3zeuUPJuR7aR7WIn3pD04g== X-CSE-MsgGUID: nCcFEmFRRNuSXib1fkH1lg== X-IronPort-AV: E=McAfee;i="6800,10657,11834"; a="82671787" X-IronPort-AV: E=Sophos;i="6.25,142,1779174000"; d="scan'208";a="82671787" 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> 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260701_131546_021154_FD8F4F0C X-CRM114-Status: GOOD ( 13.08 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org 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 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c