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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2015-05-19 15:20:34 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-05-29 10:49:51 +0200 |
| commit | ce70ca562b8d17cd995e3a3a44ad23d97dfbb38e (patch) | |
| tree | 50c728ed39c1b18a765b4460a7bafd8085eee170 /drivers/iommu/exynos-iommu.c | |
| parent | 1b09205436847897da1826a88e5cefd9cde5eed7 (diff) | |
| download | lwn-ce70ca562b8d17cd995e3a3a44ad23d97dfbb38e.tar.gz lwn-ce70ca562b8d17cd995e3a3a44ad23d97dfbb38e.zip | |
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: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/exynos-iommu.c')
| -rw-r--r-- | drivers/iommu/exynos-iommu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index b7f679c4659c..c65826847819 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -715,6 +715,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain, return -ENODEV; list_for_each_entry(data, &owner->controllers, owner_node) { + pm_runtime_get_sync(data->sysmmu); ret = __sysmmu_enable(data, pagetable, domain); if (ret >= 0) { data->master = dev; @@ -756,6 +757,7 @@ static void exynos_iommu_detach_device(struct iommu_domain *iommu_domain, data->master = NULL; list_del_init(&data->domain_node); } + pm_runtime_put(data->sysmmu); found = true; } } |