From patchwork Tue Nov 27 10:11:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Gautam X-Patchwork-Id: 10700043 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5E71F14BD for ; Tue, 27 Nov 2018 10:12:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4DF042AC4C for ; Tue, 27 Nov 2018 10:12:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 41BF02AC4F; Tue, 27 Nov 2018 10:12:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DA95C2AC5A for ; Tue, 27 Nov 2018 10:12:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730610AbeK0VJs (ORCPT ); Tue, 27 Nov 2018 16:09:48 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:53642 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730329AbeK0VJr (ORCPT ); Tue, 27 Nov 2018 16:09:47 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 8A83A60D92; Tue, 27 Nov 2018 10:12:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1543313543; bh=AgBSfbHBSPoVUCzPoMVnGkTFuRCIk3AXcdlkGtNk/ys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U7TySF+k5d4wi26ilWYdNJ8Cj7n8o3hJv2mdjGiYEePu0rsGSvoxRQGss0T4dn0Lm Ou26gT5dU2RfHgKfizVRdbr6BmWGEiYkFX/3O83CWhaIpM6enHNhp4ecnJYRC2ZFtD vLCduEga5S6Or8XODzErhmeUd5XXsbYxUdOTAKZI= Received: from blr-ubuntu-41.ap.qualcomm.com (blr-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vivek.gautam@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 2C94F61306; Tue, 27 Nov 2018 10:12:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1543313541; bh=AgBSfbHBSPoVUCzPoMVnGkTFuRCIk3AXcdlkGtNk/ys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iR2Jqqoc0NchAwqDxd9wGbErCGkq2aS8/DL/vb3Q+OYwLUSlitToMf5eIeDIughN5 BiizteoVpg7+NWXLKQhWJGJ17FVj3GnCLvucuzNHUXB/6i5RPakwrhOSXUiK1FXXOW R6uKAIzYzJPKlCYZPfbRhk8p/6ttqlPXFRu6PlOQ= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2C94F61306 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=vivek.gautam@codeaurora.org From: Vivek Gautam To: joro@8bytes.org, robh+dt@kernel.org, robin.murphy@arm.com, will.deacon@arm.com, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org Cc: alex.williamson@redhat.com, mark.rutland@arm.com, rjw@rjwysocki.net, robdclark@gmail.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, freedreno@lists.freedesktop.org, sboyd@kernel.org, tfiga@chromium.org, jcrouse@codeaurora.org, sricharan@codeaurora.org, m.szyprowski@samsung.com, architt@codeaurora.org, linux-arm-msm@vger.kernel.org, thor.thayer@linux.intel.com, Vivek Gautam Subject: [PATCH v18 3/5] iommu/arm-smmu: Add the device_link between masters and smmu Date: Tue, 27 Nov 2018 15:41:43 +0530 Message-Id: <20181127101145.7682-4-vivek.gautam@codeaurora.org> X-Mailer: git-send-email 2.16.1.72.g5be1f00a9a70 In-Reply-To: <20181127101145.7682-1-vivek.gautam@codeaurora.org> References: <20181127101145.7682-1-vivek.gautam@codeaurora.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sricharan R Finally add the device link between the master device and smmu, so that the smmu gets runtime enabled/disabled only when the master needs it. This is done from add_device callback which gets called once when the master is added to the smmu. Signed-off-by: Sricharan R Signed-off-by: Vivek Gautam Reviewed-by: Tomasz Figa Tested-by: Srinivas Kandagatla Reviewed-by: Robin Murphy --- drivers/iommu/arm-smmu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 5610cc736f9d..f02e0f58e696 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1501,6 +1501,9 @@ static int arm_smmu_add_device(struct device *dev) iommu_device_link(&smmu->iommu, dev); + device_link_add(dev, smmu->dev, + DL_FLAG_PM_RUNTIME | DL_FLAG_AUTOREMOVE_SUPPLIER); + return 0; out_cfg_free: