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 X-Spam-Level: X-Spam-Status: No, score=-11.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10EA4C43387 for ; Tue, 1 Jan 2019 04:03:12 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C77432075D for ; Tue, 1 Jan 2019 04:03:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ayEP53NI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C77432075D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=SNqlMfHkyRjSlmK4CthRD89vwzsMVmTxlOLSiTZdmoo=; b=ayEP53NIOVc/Zs eSiqDZwa5jgR9SZB+USqrLYFfTeguMiCPgeGfs/XbEJDcaNH1ORnLnmY8EQlveVx0fMAyqz7qbs+Y DFtUtuYChFD+F1pSwKVt57mL8ht5oJysSM+mH+Rx8hwCtXHtZR8/tLhbgEkeaoaGp2E+23PaAVK1B tDYjH7fueGsBLDL3ww0tZfSenUqfh7Ij5o4iTIMT1nF2iMcSb4RKAkDyeaErf2TbwJPFyL8z3rgSd qE7M09NoLtt2+8av5H6A0frqQDoAiGmFX5k5eexnR982CGucTzRWWUP/Ek+d+93SZ7IkRzMXoq84g n9U1woG/8djdF4QtnALw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1geBGe-0002oR-U2; Tue, 01 Jan 2019 04:03:00 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1geBE7-0000dH-PR; Tue, 01 Jan 2019 04:01:01 +0000 X-UUID: 64c31351db5d4ba19bb44812930132a6-20190101 X-UUID: 64c31351db5d4ba19bb44812930132a6-20190101 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1660273875; Tue, 01 Jan 2019 12:00:04 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs03n2.mediatek.inc (172.21.101.182) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 1 Jan 2019 12:00:03 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 1 Jan 2019 12:00:03 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Robin Murphy , Rob Herring Subject: [PATCH v5 19/20] iommu/mediatek: Add shutdown callback Date: Tue, 1 Jan 2019 11:55:51 +0800 Message-ID: <1546314952-15990-20-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1546314952-15990-1-git-send-email-yong.wu@mediatek.com> References: <1546314952-15990-1-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: BA3E90807588920A516E43686156FF7C58D87C46E4B96381C65D99E98F62FC1B2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181231_200024_583516_3C949FE6 X-CRM114-Status: GOOD ( 10.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , arnd@arndb.de, srv_heupstream@mediatek.com, Will Deacon , linux-kernel@vger.kernel.org, Tomasz Figa , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, yong.wu@mediatek.com, yingjoe.chen@mediatek.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org In the reboot burning test, if some Multimedia HW has something wrong, It may keep send the invalid request to IOMMU. In order to avoid affect the reboot flow, we add the shutdown callback to disable M4U HW when shutdown. Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 6 ++++++ drivers/iommu/mtk_iommu_v1.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index ddf1969..dcb02e3 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -703,6 +703,11 @@ static int mtk_iommu_remove(struct platform_device *pdev) return 0; } +static void mtk_iommu_shutdown(struct platform_device *pdev) +{ + mtk_iommu_remove(pdev); +} + static int __maybe_unused mtk_iommu_suspend(struct device *dev) { struct mtk_iommu_data *data = dev_get_drvdata(dev); @@ -784,6 +789,7 @@ static int __maybe_unused mtk_iommu_resume(struct device *dev) static struct platform_driver mtk_iommu_driver = { .probe = mtk_iommu_probe, .remove = mtk_iommu_remove, + .shutdown = mtk_iommu_shutdown, .driver = { .name = "mtk-iommu", .of_match_table = of_match_ptr(mtk_iommu_of_ids), diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index 6ede428..517dfbd 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -662,6 +662,11 @@ static int mtk_iommu_remove(struct platform_device *pdev) return 0; } +static void mtk_iommu_shutdown(struct platform_device *pdev) +{ + mtk_iommu_remove(pdev); +} + static int __maybe_unused mtk_iommu_suspend(struct device *dev) { struct mtk_iommu_data *data = dev_get_drvdata(dev); @@ -699,6 +704,7 @@ static int __maybe_unused mtk_iommu_resume(struct device *dev) static struct platform_driver mtk_iommu_driver = { .probe = mtk_iommu_probe, .remove = mtk_iommu_remove, + .shutdown = mtk_iommu_shutdown, .driver = { .name = "mtk-iommu-v1", .of_match_table = mtk_iommu_of_ids, -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel