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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2016-11-21 13:01:37 +0300
committerWill Deacon <will.deacon@arm.com>2016-11-29 18:57:43 +0300
commitce9babe5f66df2c486a5faf9cb76c9a38c78d401 (patch)
treef9b0a196730f30e89fb605cd3a9aa2f8c0f35e4b /drivers/iommu
parente4f10ffe4c9b500e545b874b816ffea5e8659b05 (diff)
downloadlinux-ce9babe5f66df2c486a5faf9cb76c9a38c78d401.tar.xz
iommu/arm-smmu: Convert struct device of_node to fwnode usage
Current ARM SMMU driver rely on the struct device.of_node pointer for device look-up and iommu_ops retrieval. In preparation for ACPI probing enablement, convert the driver to use the struct device.fwnode member for device and iommu_ops look-up so that the driver infrastructure can be used also on systems that do not associate an of_node pointer to a struct device (eg ACPI), making the device look-up and iommu_ops retrieval firmware agnostic. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Tomasz Nowicki <tn@semihalf.com> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Tested-by: Tomasz Nowicki <tn@semihalf.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Hanjun Guo <hanjun.guo@linaro.org> Cc: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/arm-smmu.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 79d54a6f7f9a..7eed55484ad6 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1380,13 +1380,14 @@ static bool arm_smmu_capable(enum iommu_cap cap)
static int arm_smmu_match_node(struct device *dev, void *data)
{
- return dev->of_node == data;
+ return dev->fwnode == data;
}
-static struct arm_smmu_device *arm_smmu_get_by_node(struct device_node *np)
+static
+struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode)
{
struct device *dev = driver_find_device(&arm_smmu_driver.driver, NULL,
- np, arm_smmu_match_node);
+ fwnode, arm_smmu_match_node);
put_device(dev);
return dev ? dev_get_drvdata(dev) : NULL;
}
@@ -1404,7 +1405,7 @@ static int arm_smmu_add_device(struct device *dev)
if (ret)
goto out_free;
} else if (fwspec && fwspec->ops == &arm_smmu_ops) {
- smmu = arm_smmu_get_by_node(to_of_node(fwspec->iommu_fwnode));
+ smmu = arm_smmu_get_by_fwnode(fwspec->iommu_fwnode);
} else {
return -ENODEV;
}
@@ -2014,7 +2015,7 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
}
}
- of_iommu_set_ops(dev->of_node, &arm_smmu_ops);
+ iommu_register_instance(dev->fwnode, &arm_smmu_ops);
platform_set_drvdata(pdev, smmu);
arm_smmu_device_reset(smmu);