From patchwork Mon May 4 08:16:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 6324121 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D0DF4BEEE1 for ; Mon, 4 May 2015 08:24:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 00167202D1 for ; Mon, 4 May 2015 08:24:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 23B16202AE for ; Mon, 4 May 2015 08:24:47 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YpBd4-0006Zg-4p; Mon, 04 May 2015 08:21:30 +0000 Received: from mailout3.w1.samsung.com ([210.118.77.13]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YpBZI-0002xb-EE for linux-arm-kernel@lists.infradead.org; Mon, 04 May 2015 08:17:41 +0000 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout3.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0NNT008YRGCOEP50@mailout3.w1.samsung.com> for linux-arm-kernel@lists.infradead.org; Mon, 04 May 2015 09:17:12 +0100 (BST) X-AuditID: cbfec7f4-f79c56d0000012ee-63-55472b08859b Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 52.D6.04846.80B27455; Mon, 4 May 2015 09:17:12 +0100 (BST) Received: from amdc1339.digital.local ([106.116.147.30]) by eusync1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0NNT008X3GC52F50@eusync1.samsung.com>; Mon, 04 May 2015 09:17:12 +0100 (BST) From: Marek Szyprowski To: iommu@lists.linux-foundation.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v6 12/25] iommu: exynos: add support for runtime_pm Date: Mon, 04 May 2015 10:16:07 +0200 Message-id: <1430727380-10912-13-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.2 In-reply-to: <1430727380-10912-1-git-send-email-m.szyprowski@samsung.com> References: <1430727380-10912-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFuplkeLIzCtJLcpLzFFi42I5/e/4ZV0ObfdQg2tXFSz+TjrGbjFx5WRm i0n3J7BYLNhvbXHt9ww2i87ZG9gtXty7yGLR//g1s8XZpjfsFp0Tl7BbfLnykMli0+NrrBYz zu9jslh75C67xanrn9ks/vUeZLT4v2cHu8WRh7vZLWZMfslmsWrXH0aL27/5LF5+PMHiIObx 5OA8Jo8189Ywevz+NYnR4+/sVmaPnbPusnvM7pjJ6rF5hZbHplWdbB6bl9R73P73mNlj8o3l jB5XTjSxevQ2v2Pz6NuyitHj8ya5AP4oLpuU1JzMstQifbsErowPvZeZCj6xV9z69Zy9gfEA WxcjJ4eEgInEygONzBC2mMSFe+uB4lwcQgJLGSXOtO+EcpqYJG7PPcsKUsUmYCjR9bYLrFtE IF/ixd6/LCA2s8B7Vokp3wJBbGEBZ4mOSffA6lkEVCX+H3zKBGLzCnhK/H+wmh1im5zE/5cr wOKcQPF37dvB6oUEPCTOtG5mncDIu4CRYRWjaGppckFxUnquoV5xYm5xaV66XnJ+7iZGSCR9 2cG4+JjVIUYBDkYlHt4Fsu6hQqyJZcWVuYcYJTiYlUR4n3x0CxXiTUmsrEotyo8vKs1JLT7E KM3BoiTOO3fX+xAhgfTEktTs1NSC1CKYLBMHp1QDo2Tgcd46w933lLbdDPwlk8UQ3zelIXnb 0nl5p34uTn2d9qdglfO0c3sb1+3UfCxaljf14+H/8xe+3mJUevtaffXPWXVTpvwx3/PQTnvj hOwNk7ddLTPuUyyekx8gN63W9t2F/bF9+r9zfW6cFGm5228Yt73D8u1h17mr1v80fyCnsud2 yredgpOUWIozEg21mIuKEwHNJKENoAIAAA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150504_011736_670664_D5737FC7 X-CRM114-Status: UNSURE ( 9.80 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.0 (-----) Cc: Rob Herring , Thierry Reding , Shaik Ameer Basha , Joonyoung Shim , Arnd Bergmann , Inki Dae , Seung-Woo Kim , Joerg Roedel , Will Deacon , Tomasz Figa , linaro-mm-sig@lists.linaro.org, Kyungmin Park , Kukjin Kim , Laurent Pinchart , Olof Johansson , Javier Martinez Canillas , Cho KyongHo , David Wodhouse , Marek Szyprowski X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch fixes support for runtime power management for SYSMMU controllers, so they are enabled when master device is attached. Signed-off-by: Marek Szyprowski --- drivers/iommu/exynos-iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 598660c87410..734107ec78fa 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -702,6 +702,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *domain, return -ENODEV; list_for_each_entry(data, &owner->clients, owner_node) { + pm_runtime_get_sync(data->sysmmu); ret = __sysmmu_enable(data, pagetable, domain); if (ret >= 0) { data->master = dev; @@ -743,6 +744,7 @@ static void exynos_iommu_detach_device(struct iommu_domain *domain, data->master = NULL; list_del_init(&data->domain_node); } + pm_runtime_put(data->sysmmu); found = true; } }