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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 EB01EC433C1 for ; Tue, 23 Mar 2021 05:59:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AA438619B2 for ; Tue, 23 Mar 2021 05:59:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229904AbhCWF6z (ORCPT ); Tue, 23 Mar 2021 01:58:55 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:60099 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S229590AbhCWF6Y (ORCPT ); Tue, 23 Mar 2021 01:58:24 -0400 X-UUID: 2a5c4466fbd2468cb1f5fbd24060b900-20210323 X-UUID: 2a5c4466fbd2468cb1f5fbd24060b900-20210323 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 531924362; Tue, 23 Mar 2021 13:58:20 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 23 Mar 2021 13:58:19 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 23 Mar 2021 13:58:18 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Will Deacon CC: Robin Murphy , Tomasz Figa , , , , , , Krzysztof Kozlowski , , , Nicolas Boichat , , Subject: [PATCH 2/2] iommu/mediatek: Alloc building as module Date: Tue, 23 Mar 2021 13:58:01 +0800 Message-ID: <20210323055801.16885-2-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210323055801.16885-1-yong.wu@mediatek.com> References: <20210323055801.16885-1-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The IOMMU in many SoC depends on the MM clocks and power-domain which are device_initcall normally, thus the subsys_init here is not helpful. This patch switches it to module_platform_driver which allow the driver built as module. Correspondingly switch the config to tristate. Signed-off-by: Yong Wu --- drivers/iommu/Kconfig | 2 +- drivers/iommu/mtk_iommu.c | 16 ++++------------ 2 files changed, 5 insertions(+), 13 deletions(-) diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index bc93da48bed0..74f3e15edc14 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -349,7 +349,7 @@ config S390_AP_IOMMU is not implemented as it is not necessary for VFIO. config MTK_IOMMU - bool "MTK IOMMU Support" + tristate "MediaTek IOMMU Support" depends on ARCH_MEDIATEK || COMPILE_TEST select ARM_DMA_USE_IOMMU select IOMMU_API diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 6ecc007f07cd..a73ff3e20480 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -1079,16 +1080,7 @@ static struct platform_driver mtk_iommu_driver = { .pm = &mtk_iommu_pm_ops, } }; +module_platform_driver(mtk_iommu_driver); -static int __init mtk_iommu_init(void) -{ - int ret; - - ret = platform_driver_register(&mtk_iommu_driver); - if (ret != 0) - pr_err("Failed to register MTK IOMMU driver\n"); - - return ret; -} - -subsys_initcall(mtk_iommu_init) +MODULE_DESCRIPTION("IOMMU API for MediaTek M4U implementations"); +MODULE_LICENSE("GPL v2"); -- 2.18.0