iommu/exynos: Make use of iommu_device_register interface

Register Exynos IOMMUs to the IOMMU core and make them
visible in sysfs. This patch does not add the links between
IOMMUs and translated devices yet.

Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 57ba0d3091ea..64325d8ddd40 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -276,6 +276,8 @@ struct sysmmu_drvdata {
         struct list_head owner_node;    /* node for owner controllers list */
         phys_addr_t pgtable;            /* assigned page table structure */
         unsigned int version;           /* our version */
+
+        struct iommu_device iommu;      /* IOMMU core handle */
 };
 
 static struct exynos_iommu_domain *to_exynos_domain(struct iommu_domain *dom)
@@ -611,6 +613,18 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev)
         data->sysmmu = dev;
         spin_lock_init(&data->lock);
 
+        ret = iommu_device_sysfs_add(&data->iommu, &pdev->dev, NULL,
+                                     dev_name(data->sysmmu));
+        if (ret)
+                return ret;
+
+        iommu_device_set_ops(&data->iommu, &exynos_iommu_ops);
+        iommu_device_set_fwnode(&data->iommu, &dev->of_node->fwnode);
+
+        ret = iommu_device_register(&data->iommu);
+        if (ret)
+                return ret;
+
         platform_set_drvdata(pdev, data);
 
         __sysmmu_get_version(data);