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 B0A5EE95385 for ; Wed, 4 Feb 2026 11:15:36 +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=wzXjpSlHKa5ABpElaqGQovh4JnH/O/hb3q9tdYa017Y=; b=hbgrnslRY/SQ+2 VFBeHssQz+q0AVPRGLeuztd3ybOTpiJAUjD8FMQ71PVYS27s/S99Qn0BAyAMOaysjZG2OJ2RqEUtd d8BujFGe6PcfxVBuAuewWFPMiESkLE0vnYGM/uMZJZQRx9PT3PP1IAJOzyvk8HNKR2jLFDfUG50oj 3PnRAs/M2AIfJ6vxgcehCZ4gVVs/HkEHRhvS4weP7hLQpMxUhiIYngnFpgcyMR5ru6f3/Z6xmHW5Z cHReHQMTnC7MPSOJS4tRdZzTmxXm5aJlWTaJkee8lSpBa0vylc7kcqyhKQU+6JNYDHBQBSr0BJJfI aD2UkvDn2JeOKbIGlVEA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vnarA-00000008LNA-1oJN; Wed, 04 Feb 2026 11:15:36 +0000 Received: from mgamail.intel.com ([192.198.163.19]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vnar8-00000008LHZ-3OoE for linux-i3c@lists.infradead.org; Wed, 04 Feb 2026 11:15:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770203735; x=1801739735; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=qFV5w6/dojBgFuMoTmraSw+wpik8MwYGAHJG2STTolk=; b=KWzWOIiFoz0u7sfh+7hbGdrWjgYrEBSpYF9W+LPZe+nPg0TxLU5CfFVR F326M7OnQvuvnGwYK4FOpTCjgbGzyRFn01iH0mrlGB9vOh6zh442DC3Ml ObELLiQjuqvpygpMTpyphs/gGzmQWb5ex+zre+FG/qw5f4P8b9JFmLgWS rirkpdD9FyTHOVIh/bP0pcXOCqVFPGhJbpXDeFX9cN5lmAWzmHK2PBPjh 0enihCw2Eowez3IdesNasIY2hsRB+wklHAczlumNc3TG6JXqVeLEaBBbg luwN8+HWITuhQvDcVaG3zz424z1VvAJhu8/m12PUEWO+HCdJVllsX7RcQ A==; X-CSE-ConnectionGUID: cELi0y9BT4Cxtk9zSp7ocg== X-CSE-MsgGUID: ie3/ErpDQk+TF/zN+EzRwQ== X-IronPort-AV: E=McAfee;i="6800,10657,11691"; a="70406074" X-IronPort-AV: E=Sophos;i="6.21,272,1763452800"; d="scan'208";a="70406074" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Feb 2026 03:15:35 -0800 X-CSE-ConnectionGUID: WRl7Nv9dT4eYUi9DBOcG8Q== X-CSE-MsgGUID: OTM0MQiwQ+6X57JQAv4aYA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,272,1763452800"; d="scan'208";a="209739293" Received: from cpetruta-mobl1.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.245.181]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Feb 2026 03:15:33 -0800 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-pm@vger.kernel.org Subject: [PATCH V2 6/6] i3c: mipi-i3c-hci-pci: Enable IBI while runtime suspended for Intel controllers Date: Wed, 4 Feb 2026 13:15:11 +0200 Message-ID: <20260204111511.78626-7-adrian.hunter@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260204111511.78626-1-adrian.hunter@intel.com> References: <20260204111511.78626-1-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-20260204_031534_859375_42C7DD10 X-CRM114-Status: GOOD ( 12.36 ) 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. Also set 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 --- Changes in V2: Retain HCI_QUIRK_RPM_ALLOWED Amend commit message accordingly drivers/i3c/master/mipi-i3c-hci/core.c | 4 +++- drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c | 3 +++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c index 149b3fad34b5..d19be1d276b5 100644 --- a/drivers/i3c/master/mipi-i3c-hci/core.c +++ b/drivers/i3c/master/mipi-i3c-hci/core.c @@ -1005,7 +1005,9 @@ 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_ALLOWED | + 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 c562e666f29a..58c4a025a29c 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