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    Subject[PATCH 10/11] iommu/exynos: Make use of iommu_device_register interface
    Date
    From: Joerg Roedel <jroedel@suse.de>

    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
    Signed-off-by: Joerg Roedel <jroedel@suse.de>
    ---
    drivers/iommu/exynos-iommu.c | 14 ++++++++++++++
    1 file changed, 14 insertions(+)

    diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
    index 57ba0d3..64325d8 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);
    --
    1.9.1
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