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Commit ce70ca56 authored by Marek Szyprowski's avatar Marek Szyprowski Committed by Joerg Roedel
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iommu/exynos: Add support for runtime_pm 



This patch fixes support for runtime power management for SYSMMU
controllers, so they are enabled when master device is attached.

Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Tested-by: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 1b092054

drivers/iommu/exynos-iommu.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -715,6 +715,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain, 
		return -ENODEV;

		return -ENODEV;





	list_for_each_entry(data, &owner->controllers, owner_node) {

	list_for_each_entry(data, &owner->controllers, owner_node) {

		pm_runtime_get_sync(data->sysmmu);

		ret = __sysmmu_enable(data, pagetable, domain);

		ret = __sysmmu_enable(data, pagetable, domain);

		if (ret >= 0) {

		if (ret >= 0) {

			data->master = dev;

			data->master = dev;
@@ -756,6 +757,7 @@ static void exynos_iommu_detach_device(struct iommu_domain *iommu_domain, 
				data->master = NULL;

				data->master = NULL;

				list_del_init(&data->domain_node);

				list_del_init(&data->domain_node);

			}

			}

			pm_runtime_put(data->sysmmu);

			found = true;

			found = true;

		}

		}

	}

	}