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Subject[RFC PATCH 32/34] iommu/exynos: Convert to probe/release_device() call-backs
Date
From: Joerg Roedel <jroedel@suse.de>

Convert the Exynos IOMMU drivers to use the probe_device() and
release_device() call-backs of iommu_ops, so that the iommu core code
does the group and sysfs setup.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/exynos-iommu.c | 23 ++++++-----------------
1 file changed, 6 insertions(+), 17 deletions(-)

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 86ecccbf0438..f865c9093722 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -1223,19 +1223,13 @@ static phys_addr_t exynos_iommu_iova_to_phys(struct iommu_domain *iommu_domain,
return phys;
}

-static int exynos_iommu_add_device(struct device *dev)
+static struct iommu_device *exynos_iommu_probe_device(struct device *dev)
{
struct exynos_iommu_owner *owner = dev->archdata.iommu;
struct sysmmu_drvdata *data;
- struct iommu_group *group;

if (!has_sysmmu(dev))
- return -ENODEV;
-
- group = iommu_group_get_for_dev(dev);
-
- if (IS_ERR(group))
- return PTR_ERR(group);
+ return ERR_PTR(-ENODEV);

list_for_each_entry(data, &owner->controllers, owner_node) {
/*
@@ -1247,14 +1241,11 @@ static int exynos_iommu_add_device(struct device *dev)
DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME);
}
- iommu_group_put(group);

- iommu_device_link(&owner->iommu, dev);
-
- return 0;
+ return &owner->iommu;
}

-static void exynos_iommu_remove_device(struct device *dev)
+static void exynos_iommu_release_device(struct device *dev)
{
struct exynos_iommu_owner *owner = dev->archdata.iommu;
struct sysmmu_drvdata *data;
@@ -1272,8 +1263,6 @@ static void exynos_iommu_remove_device(struct device *dev)
iommu_group_put(group);
}
}
- iommu_device_unlink(&owner->iommu, dev);
- iommu_group_remove_device(dev);

list_for_each_entry(data, &owner->controllers, owner_node)
device_link_del(data->link);
@@ -1381,8 +1370,8 @@ static const struct iommu_ops exynos_iommu_ops = {
.unmap = exynos_iommu_unmap,
.iova_to_phys = exynos_iommu_iova_to_phys,
.device_group = generic_device_group,
- .add_device = exynos_iommu_add_device,
- .remove_device = exynos_iommu_remove_device,
+ .probe_device = exynos_iommu_probe_device,
+ .release_device = exynos_iommu_release_device,
.pgsize_bitmap = SECT_SIZE | LPAGE_SIZE | SPAGE_SIZE,
.of_xlate = exynos_iommu_of_xlate,
};
--
2.17.1
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