[PATCH v3 25/34] iommu/rockchip: Convert to probe/release_device() call-backs

Joerg Roedel
2020-04-29T13:38:09Z

Convert the Rockchip IOMMU driver 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/rockchip-iommu.c | 26 +++++++-------------------
1 file changed, 7 insertions(+), 19 deletions(-)

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index b33cdd5aad81..d25c2486ca07 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -1054,40 +1054,28 @@ static void rk_iommu_domain_free(struct iommu_domain *domain)
kfree(rk_domain);
}

-static int rk_iommu_add_device(struct device *dev)
+static struct iommu_device *rk_iommu_probe_device(struct device *dev)
{
- struct iommu_group *group;
- struct rk_iommu *iommu;
struct rk_iommudata *data;
+ struct rk_iommu *iommu;

data = dev->archdata.iommu;
if (!data)
- return -ENODEV;
+ return ERR_PTR(-ENODEV);

iommu = rk_iommu_from_dev(dev);

- group = iommu_group_get_for_dev(dev);
- if (IS_ERR(group))
- return PTR_ERR(group);
- iommu_group_put(group);
-
- iommu_device_link(&iommu->iommu, dev);
data->link = device_link_add(dev, iommu->dev,
DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME);

- return 0;
+ return &iommu->iommu;
}

-static void rk_iommu_remove_device(struct device *dev)
+static void rk_iommu_release_device(struct device *dev)
{
- struct rk_iommu *iommu;
struct rk_iommudata *data = dev->archdata.iommu;

- iommu = rk_iommu_from_dev(dev);
-
device_link_del(data->link);
- iommu_device_unlink(&iommu->iommu, dev);
- iommu_group_remove_device(dev);
}

static struct iommu_group *rk_iommu_device_group(struct device *dev)
@@ -1126,8 +1114,8 @@ static const struct iommu_ops rk_iommu_ops = {
.detach_dev = rk_iommu_detach_device,
.map = rk_iommu_map,
.unmap = rk_iommu_unmap,
- .add_device = rk_iommu_add_device,
- .remove_device = rk_iommu_remove_device,
+ .probe_device = rk_iommu_probe_device,
+ .release_device = rk_iommu_release_device,
.iova_to_phys = rk_iommu_iova_to_phys,
.device_group = rk_iommu_device_group,
.pgsize_bitmap = RK_IOMMU_PGSIZE_BITMAP,