From patchwork Mon Aug 27 10:55:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Gautam X-Patchwork-Id: 10576933 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 1033D5A4 for ; Mon, 27 Aug 2018 10:57:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F0A82292F1 for ; Mon, 27 Aug 2018 10:57:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E4D7429773; Mon, 27 Aug 2018 10:57:27 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,T_DKIM_INVALID 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 8B30C292F1 for ; Mon, 27 Aug 2018 10:57:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727227AbeH0Onf (ORCPT ); Mon, 27 Aug 2018 10:43:35 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:39536 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726785AbeH0Onf (ORCPT ); Mon, 27 Aug 2018 10:43:35 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 5609B607C3; Mon, 27 Aug 2018 10:57:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535367445; bh=NC/wWMEEcBggaXBM+ZWXvHgSsRW9eNaBhPHQLOwetPE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Zp3y6Gy9PPBfbs+wNl5GfFmcOj/kLvn4X+SnP/dxcOkB0duK0kAoJmap95scR5li2 7OPCnXzMiLAL765dkqJCzuzAp+72MuLK8eYdH/bRV+fc77BcFJHbjyxJb7t/XMEILW PjFkGHNavzC9IzwkAmYSzEVGtu8iwuJJnKqvTvyM= 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 20A7060711; Mon, 27 Aug 2018 10:57:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535367439; bh=NC/wWMEEcBggaXBM+ZWXvHgSsRW9eNaBhPHQLOwetPE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JKFO5tkY5lSj82fAVm7RLyVDNA7/Rh76R0O+LPHl0OYwYq1SfQF0W13Vq3Xj3nNYk FesnjkVxdCyRora+RD1nXfOdFkOQaDXChamURG5kjC7/g8DmidSBn7lBf88QEgqlJs K3uTpQMg0dWRm+XGO1zZk7CJUD8nOaC0lhxsvY28= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 20A7060711 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, linux-kernel@vger.kernel.org, freedreno@lists.freedesktop.org Cc: alex.williamson@redhat.com, mark.rutland@arm.com, rjw@rjwysocki.net, robdclark@gmail.com, andy.gross@linaro.org, linux-pm@vger.kernel.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, Vivek Gautam Subject: [Patch v15 3/5] iommu/arm-smmu: Add the device_link between masters and smmu Date: Mon, 27 Aug 2018 16:25:49 +0530 Message-Id: <20180827105551.16346-4-vivek.gautam@codeaurora.org> X-Mailer: git-send-email 2.16.1.72.g5be1f00a9a70 In-Reply-To: <20180827105551.16346-1-vivek.gautam@codeaurora.org> References: <20180827105551.16346-1-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 --- Changes since v14: - none. 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 23b4a60149b6..b5e7f72d418c 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1461,6 +1461,9 @@ 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: