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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 device configured as a wakeup source can wake the system by generating an In-Band Interrupt (IBI). When an IBI is queued for processing, record a wakeup event for the device if wakeup is enabled. Use a 100 ms processing interval to give the I3C device driver time to process the IBI. Signed-off-by: Adrian Hunter --- Changes in V4: None Changes in V2 and V3: None drivers/i3c/master.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 2616354dbe54..6c5341491944 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -3384,6 +3384,9 @@ static void i3c_master_unregister_i3c_devs(struct i3c_master_controller *master) } } +/* Approximate time for IBI handler to run */ +#define I3C_WAKEUP_PROCESSING_TIME_MS 100 + /** * i3c_master_queue_ibi() - Queue an IBI * @dev: the device this IBI is coming from @@ -3397,6 +3400,9 @@ void i3c_master_queue_ibi(struct i3c_dev_desc *dev, struct i3c_ibi_slot *slot) if (!dev->ibi || !slot) return; + if (device_may_wakeup(&dev->dev->dev)) + pm_wakeup_event(&dev->dev->dev, I3C_WAKEUP_PROCESSING_TIME_MS); + atomic_inc(&dev->ibi->pending_ibis); queue_work(dev->ibi->wq, &slot->work); } -- 2.53.0 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c 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 80CA131F98F; 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a="74149614" X-IronPort-AV: E=Sophos;i="6.25,208,1779174000"; d="scan'208";a="74149614" 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 06:19:34 -0700 X-CSE-ConnectionGUID: FDHh+cuwTpKvjBriPUT4PQ== X-CSE-MsgGUID: ZfkrfyC7SYiat7ESCcIxAg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,208,1779174000"; d="scan'208";a="260338228" 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 06:19:32 -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 09/14] i3c: master: Report wakeup events for IBIs Date: Thu, 6 Aug 2026 16:18:52 +0300 Message-ID: <20260806131857.119830-10-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-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 device configured as a wakeup source can wake the system by generating an In-Band Interrupt (IBI). When an IBI is queued for processing, record a wakeup event for the device if wakeup is enabled. Use a 100 ms processing interval to give the I3C device driver time to process the IBI. Signed-off-by: Adrian Hunter --- Changes in V4: None Changes in V2 and V3: None drivers/i3c/master.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 2616354dbe54..6c5341491944 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -3384,6 +3384,9 @@ static void i3c_master_unregister_i3c_devs(struct i3c_master_controller *master) } } +/* Approximate time for IBI handler to run */ +#define I3C_WAKEUP_PROCESSING_TIME_MS 100 + /** * i3c_master_queue_ibi() - Queue an IBI * @dev: the device this IBI is coming from @@ -3397,6 +3400,9 @@ void i3c_master_queue_ibi(struct i3c_dev_desc *dev, struct i3c_ibi_slot *slot) if (!dev->ibi || !slot) return; + if (device_may_wakeup(&dev->dev->dev)) + pm_wakeup_event(&dev->dev->dev, I3C_WAKEUP_PROCESSING_TIME_MS); + atomic_inc(&dev->ibi->pending_ibis); queue_work(dev->ibi->wq, &slot->work); } -- 2.53.0