From patchwork Mon Nov 21 14:40:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 13051201 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 191B6C433FE for ; Mon, 21 Nov 2022 14:51:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230041AbiKUOvY (ORCPT ); Mon, 21 Nov 2022 09:51:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45554 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231324AbiKUOul (ORCPT ); Mon, 21 Nov 2022 09:50:41 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA6B0C1F49; Mon, 21 Nov 2022 06:42:48 -0800 (PST) Message-ID: <20221121140050.322564760@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1669041608; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=BsahiWAKXFVJNJh44POfSovZLxdrhfjFryH8JdnSUvg=; b=PR53tmTt10lyQW8LlIx/PyT+1Nwg6hlPDXIQcLRf5Q22DV1dMMXq8ggOlWrdIN2B0Gk+en BLEYhIeWc0u73XGOG0S5eSnH4U91VqDWy+tCRIFBLy3528SNFP2T+9AsdU4nx/8BzK0AIy 6JqgDVGRTua3bU+CAr4StsXEuRVfqCwSwNzq8EIyg89676MuCUb9RwNxryWEbZQ3OCNHtD v5U1IcmeCzeVkYJXmzJ2h8iUSNZet81amIAwvi3AwkII7DTKtN5bhX6VgpNsoDFvSvDg81 bphqeOprxQq9kras4E8qEN9rA3Nvm5s3du7g6IkbpjLXXyobrzsXzsPLfeH/YA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1669041608; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=BsahiWAKXFVJNJh44POfSovZLxdrhfjFryH8JdnSUvg=; b=HQ5Yx+4UF17bUmcln2P+uBe4p0mVVcmgNYPOgbUkeviPuXl5M6nQ/kBiImIbMI7aNTdljT rKTZG/Cs8/s2gUCw== From: Thomas Gleixner To: LKML Cc: Will Deacon , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Marc Zyngier , Greg Kroah-Hartman , Jason Gunthorpe , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Ammar Faizi , Robin Murphy , Lorenzo Pieralisi , Nishanth Menon , Tero Kristo , Santosh Shilimkar , linux-arm-kernel@lists.infradead.org, Vinod Koul , Sinan Kaya , Andy Gross , Bjorn Andersson , Mark Rutland , Shameerali Kolothum Thodi , Zenghui Yu , Shawn Guo , Sascha Hauer , Fabio Estevam Subject: [patch V2 32/40] genirq/msi: Provide MSI_FLAG_PARENT_PM_DEV References: <20221121135653.208611233@linutronix.de> MIME-Version: 1.0 Date: Mon, 21 Nov 2022 15:40:08 +0100 (CET) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Some platform-MSI implementations require that power management is redirected to the underlying interrupt chip device. To make this work with per device MSI domains provide a new feature flag and let the core code handle the setup of dev->pm_dev when set during device MSI domain creation. Signed-off-by: Thomas Gleixner --- include/linux/msi.h | 2 ++ kernel/irq/msi.c | 2 ++ 2 files changed, 4 insertions(+) --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -538,6 +538,8 @@ enum { MSI_FLAG_NOMASK_QUIRK = (1 << 7), /* Use dev->fwnode for MSI device domain creation */ MSI_FLAG_USE_DEV_FWNODE = (1 << 8), + /* Set parent->dev into domain->pm_dev on device domain creation */ + MSI_FLAG_PARENT_PM_DEV = (1 << 9), /* Mask for the generic functionality */ MSI_GENERIC_FLAGS_MASK = GENMASK(15, 0), --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -884,6 +884,8 @@ static struct irq_domain *__msi_create_i if (!domain->name && info->chip) domain->name = info->chip->name; irq_domain_update_bus_token(domain, info->bus_token); + if (info->flags & MSI_FLAG_PARENT_PM_DEV) + domain->pm_dev = parent->pm_dev; } return domain;