From patchwork Thu Aug 30 14:45:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Gautam X-Patchwork-Id: 10581903 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 9AA495A4 for ; Thu, 30 Aug 2018 14:46:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8B3232B560 for ; Thu, 30 Aug 2018 14:46:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7EFB22BC83; Thu, 30 Aug 2018 14:46:31 +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 07FE92B560 for ; Thu, 30 Aug 2018 14:46:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729969AbeH3Ss7 (ORCPT ); Thu, 30 Aug 2018 14:48:59 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:57254 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729570AbeH3Ss6 (ORCPT ); Thu, 30 Aug 2018 14:48:58 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 4A32C60791; Thu, 30 Aug 2018 14:46:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535640388; bh=518joxwluyfeC6mqA40yglQmIyZcYnWBbm0UuTRrxkQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CR5+ZPzF1IJkWmXyM05LCMU9GUHSoMq7mKbOZJz2gyVYu++IWs/ZrlsqsH94vDS4u ibSyk2AsIhXfuhzBTaaCF70Ym+XF1DbOLzNeSy2A2RwOYsPIuK9EksmbyNZ85QC2e0 Z74EqaNOOdMrRP01V1WDZoNoluRLasHfN5GqoJxg= 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 8FFEB60540; Thu, 30 Aug 2018 14:46:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1535640385; bh=518joxwluyfeC6mqA40yglQmIyZcYnWBbm0UuTRrxkQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BbukAaWmoYK1flrVlDnCnpWjxEbLVl8jyEevhPNLTAdT8BzrdCMACOTvmY1NYVFJh 12okkq5vGyrWd+gAhwlSzm8lqH5foUNKw4p4LCickoN3rRE6IdY6aXWMzA9zESf3mL Kd0spEUI4enKFxDFYsG/28E2ZBFSW0X/nD5oKoMk= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 8FFEB60540 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 Cc: alex.williamson@redhat.com, mark.rutland@arm.com, rjw@rjwysocki.net, robdclark@gmail.com, 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, Vivek Gautam Subject: [PATCH v16 3/5] iommu/arm-smmu: Add the device_link between masters and smmu Date: Thu, 30 Aug 2018 20:15:39 +0530 Message-Id: <20180830144541.17740-4-vivek.gautam@codeaurora.org> X-Mailer: git-send-email 2.16.1.72.g5be1f00a9a70 In-Reply-To: <20180830144541.17740-1-vivek.gautam@codeaurora.org> References: <20180830144541.17740-1-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 1bf542010be7..166c8c6da24f 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: