From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Szyprowski Subject: [PATCH v4 13/18] iommu: exynos: add support for runtime_pm Date: Fri, 16 Jan 2015 10:13:07 +0100 Message-ID: <1421399592-7482-14-git-send-email-m.szyprowski@samsung.com> References: <1421399592-7482-1-git-send-email-m.szyprowski@samsung.com> Return-path: In-reply-to: <1421399592-7482-1-git-send-email-m.szyprowski@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org To: iommu@lists.linux-foundation.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Marek Szyprowski , linaro-mm-sig@lists.linaro.org, Arnd Bergmann , Shaik Ameer Basha , Cho KyongHo , Joerg Roedel , Thierry Reding , Olof Johansson , Laurent Pinchart , Rob Herring , Will Deacon , David Wodhouse , Inki Dae , Kukjin Kim , Tomasz Figa , Kyungmin Park List-Id: iommu@lists.linux-foundation.org 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 c6cca44d7858..f8609f40ae59 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -695,6 +695,7 @@ 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; @@ -736,6 +737,7 @@ 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; } } -- 1.9.2