sprd suports a single iommu instance and only a single id. Parse it
directly using iommu_of_get_single_iommu() and remove
sprd_iommu_of_xlate().
It stores the iommu, not a per-driver struct in the dev_iommu_priv(), keep
it that way for now.
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
---
drivers/iommu/sprd-iommu.c | 32 ++++++++++++++------------------
1 file changed, 14 insertions(+), 18 deletions(-)
diff --git a/drivers/iommu/sprd-iommu.c b/drivers/iommu/sprd-iommu.c
index 537359f109979b..f1b87f8661e199 100644
--- a/drivers/iommu/sprd-iommu.c
+++ b/drivers/iommu/sprd-iommu.c
@@ -11,6 +11,7 @@
#include <linux/dma-mapping.h>
#include <linux/errno.h>
#include <linux/iommu.h>
+#include <linux/iommu-driver.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_platform.h>
@@ -383,32 +384,27 @@ static phys_addr_t sprd_iommu_iova_to_phys(struct iommu_domain *domain,
return pa;
}
-static struct iommu_device *sprd_iommu_probe_device(struct device *dev)
+static struct iommu_device *sprd_iommu_probe_device(struct iommu_probe_info *pinf)
{
- struct sprd_iommu_device *sdev = dev_iommu_priv_get(dev);
+ struct sprd_iommu_device *sdev;
+
+ sdev = iommu_of_get_single_iommu(pinf, &sprd_iommu_ops, -1,
+ struct sprd_iommu_device, iommu);
+ if (IS_ERR(sdev))
+ return ERR_CAST(sdev);
+ if (iommu_of_num_ids(pinf) != 1)
+ return ERR_PTR(-EINVAL);
+
+ dev_iommu_priv_set(pinf->dev, sdev);
return &sdev->iommu;
}
-static int sprd_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
-{
- struct platform_device *pdev;
-
- if (!dev_iommu_priv_get(dev)) {
- pdev = of_find_device_by_node(args->np);
- dev_iommu_priv_set(dev, platform_get_drvdata(pdev));
- platform_device_put(pdev);
- }
-
- return 0;
-}
-
-
static const struct iommu_ops sprd_iommu_ops = {
.domain_alloc_paging = sprd_iommu_domain_alloc_paging,
- .probe_device = sprd_iommu_probe_device,
+ .probe_device_pinf = sprd_iommu_probe_device,
.device_group = generic_single_device_group,
- .of_xlate = sprd_iommu_of_xlate,
+ .of_xlate = iommu_dummy_of_xlate,
.pgsize_bitmap = SPRD_IOMMU_PAGE_SIZE,
.owner = THIS_MODULE,
.default_domain_ops = &(const struct iommu_domain_ops) {
--
2.42.0
