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 0F462D73E80 for ; Thu, 29 Jan 2026 18:19:14 +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=kdfnZvTCcDeLkxmcJaNJyE4+okxqA7QFG2BeXiaGqQ8=; b=jonLWcShWmoAGc 3NBnzVafV0WenwbM9R44rOSqKRATF5WC6adGmEhzsyMIwG+h7hq9jla2oqzj2Rq0/PUeIDmm9UNyR k6i96jG4ka23Dsm0KgGFo2hKIRA/MREc6YDBrECiAsbTd0tf0VCPx63nfMDlPnDS4RMQECvakc89t yXWw3Te6w1wJVmPwkMA4ziqe/XQmQ3lxpCYkkdlbJheTIFwaSyEmhR4u3mJV/whuulUBQlRPZUOBF 9KSVOq7HRS32bNk8KWAJmxfMP4vrx8ejuXu/iWAE1aeawv6pxJZHJLe1qItkwb9T0l/MTy7ts6rn7 dEGrDfeSEfKFO+Bpws8A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vlWbp-00000000Vdf-3MxW; Thu, 29 Jan 2026 18:19:13 +0000 Received: from mgamail.intel.com ([192.198.163.18]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vlWbk-00000000VV8-3yN7 for linux-i3c@lists.infradead.org; Thu, 29 Jan 2026 18:19:10 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1769710749; x=1801246749; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=w7Meq2vOvdBRZgQHH+Eb77Z8XpjX4o1PXJQZknXYpy8=; b=hC4/wz3Jy6IYbjJtMqVdoVVMI1uAO6/6jovlFjZje/1YdBuoJa+ZCJIZ p3HgQxxTq+jYurvKuXOmza5HOOFuGY0eHGDIwUZUfGCgY54q8F4fmJfEA UpPZ6dgoHf4WUWS97RO9Q4Wsw2s9iCDyiuOrTg2G9xGpaQNrcRFyOCugD 65RjTk1hyIYeCOHGHcYnzu7+cxTl8aY3qGBgBwi0DvxabUB+nUQBRDZ76 jj2BPDCWh4WXyVC4QKstcMGrSif+RIA00LqsKDbxrqZpWIig4ezrNUito GjY13kdIU2RyZigV9mg6BPEnoFtpQvbu/tQ4OjqtosTqebf3cVTHG5mJe w==; X-CSE-ConnectionGUID: 1yju6So4R0+PJHQT9k/jqw== X-CSE-MsgGUID: O3g4NHmCSHWhzum87Tni7g== X-IronPort-AV: E=McAfee;i="6800,10657,11686"; a="70158315" X-IronPort-AV: E=Sophos;i="6.21,261,1763452800"; d="scan'208";a="70158315" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jan 2026 10:19:09 -0800 X-CSE-ConnectionGUID: ewWpuvxqT2qGyQ9n6oBChw== X-CSE-MsgGUID: Q9gkBaHZQ92Qr1PSv7/t/A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,261,1763452800"; d="scan'208";a="208255315" Received: from egrumbac-mobl6.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.245.96]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jan 2026 10:19:06 -0800 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 7/7] i3c: mipi-i3c-hci-pci: Enable IBI while runtime suspended for Intel controllers Date: Thu, 29 Jan 2026 20:18:41 +0200 Message-ID: <20260129181841.130864-8-adrian.hunter@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260129181841.130864-1-adrian.hunter@intel.com> References: <20260129181841.130864-1-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 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260129_101908_994443_DD34F1E5 X-CRM114-Status: GOOD ( 11.83 ) 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 Intel LPSS I3C controllers can wake from runtime suspend to receive in-band interrupts (IBIs), and they also implement the MIPI I3C HCI Multi-Bus Instance capability. When multiple I3C bus instances share the same PCI wakeup, the PCI parent must coordinate runtime PM so that all instances suspend together and their mipi-i3c-hci runtime suspend callbacks are invoked in a consistent manner. Enable IBI-based wakeup by setting HCI_QUIRK_RPM_IBI_ALLOWED for the intel-lpss-i3c platform device. Replace HCI_QUIRK_RPM_ALLOWED with HCI_QUIRK_RPM_PARENT_MANAGED so that the mipi-i3c-hci core driver expects runtime PM to be controlled by the PCI parent rather than by individual instances. For all Intel HCI PCI configurations, enable the corresponding control_instance_pm flag in the PCI driver. Signed-off-by: Adrian Hunter --- drivers/i3c/master/mipi-i3c-hci/core.c | 2 +- drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c index cb974b0f9e17..67ae7441ce97 100644 --- a/drivers/i3c/master/mipi-i3c-hci/core.c +++ b/drivers/i3c/master/mipi-i3c-hci/core.c @@ -992,7 +992,7 @@ static const struct acpi_device_id i3c_hci_acpi_match[] = { MODULE_DEVICE_TABLE(acpi, i3c_hci_acpi_match); static const struct platform_device_id i3c_hci_driver_ids[] = { - { .name = "intel-lpss-i3c", HCI_QUIRK_RPM_ALLOWED }, + { .name = "intel-lpss-i3c", HCI_QUIRK_RPM_IBI_ALLOWED | HCI_QUIRK_RPM_PARENT_MANAGED }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, i3c_hci_driver_ids); diff --git a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c index f7f776300a0f..2f72cf48e36c 100644 --- a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c +++ b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c @@ -200,6 +200,7 @@ static const struct mipi_i3c_hci_pci_info intel_mi_1_info = { .id = {0, 1}, .instance_offset = {0, 0x400}, .instance_count = 2, + .control_instance_pm = true, }; static const struct mipi_i3c_hci_pci_info intel_mi_2_info = { @@ -209,6 +210,7 @@ static const struct mipi_i3c_hci_pci_info intel_mi_2_info = { .id = {2, 3}, .instance_offset = {0, 0x400}, .instance_count = 2, + .control_instance_pm = true, }; static const struct mipi_i3c_hci_pci_info intel_si_2_info = { @@ -218,6 +220,7 @@ static const struct mipi_i3c_hci_pci_info intel_si_2_info = { .id = {2}, .instance_offset = {0}, .instance_count = 1, + .control_instance_pm = true, }; static int mipi_i3c_hci_pci_find_instance(struct mipi_i3c_hci_pci *hci, struct device *dev) -- 2.51.0 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c