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[PATCH v7 05/16] drivers: iommu: arm-smmu: convert struct device of_node to fwnode usage

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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>
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>
---
 drivers/iommu/arm-smmu.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 8f72814..8a3c2a4 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1379,13 +1379,14 @@ 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;
 }
@@ -1403,7 +1404,7 @@ 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;
 	}
@@ -2007,7 +2008,7 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 		}
 	}
 
-	of_iommu_set_ops(dev->of_node, &arm_smmu_ops);
+	fwnode_iommu_set_ops(dev->fwnode, &arm_smmu_ops);
 	platform_set_drvdata(pdev, smmu);
 	arm_smmu_device_reset(smmu);
 
-- 
2.10.0

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[PATCH v7 00/16] ACPI IORT ARM SMMU support Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:20 +0100
  [PATCH v7 01/16] drivers: acpi: add FWNODE_ACPI_STATIC fwnode type Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:20 +0100
    Re: [PATCH v7 01/16] drivers: acpi: add FWNODE_ACPI_STATIC fwnode type "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-10 00:40 +0100
  [PATCH v7 02/16] drivers: acpi: iort: introduce linker section for IORT entries probing Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:20 +0100
  [PATCH v7 16/16] drivers: acpi: iort: introduce iort_iommu_configure Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:20 +0100
  [PATCH v7 11/16] drivers: iommu: arm-smmu-v3: add IORT configuration Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:20 +0100
  [PATCH v7 08/16] drivers: acpi: iort: add node match function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:20 +0100
  [PATCH v7 13/16] drivers: iommu: arm-smmu: add IORT configuration Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:20 +0100
  [PATCH v7 05/16] drivers: iommu: arm-smmu: convert struct device of_node to fwnode usage Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
    Re: [PATCH v7 05/16] drivers: iommu: arm-smmu: convert struct device  of_node to fwnode usage Robin Murphy <robin.murphy@arm.com> - 2016-11-09 15:50 +0100
  [PATCH v7 03/16] drivers: acpi: iort: add support for IOMMU fwnode registration Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
  [PATCH v7 15/16] drivers: acpi: iort: add single mapping function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
  [PATCH v7 14/16] drivers: acpi: iort: replace rid map type with type mask Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
  [PATCH v7 06/16] drivers: iommu: arm-smmu-v3: convert struct device of_node to fwnode usage Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
    Re: [PATCH v7 06/16] drivers: iommu: arm-smmu-v3: convert struct  device of_node to fwnode usage Robin Murphy <robin.murphy@arm.com> - 2016-11-09 15:50 +0100
  [PATCH v7 12/16] drivers: iommu: arm-smmu: split probe functions into DT/generic portions Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
  [PATCH v7 10/16] drivers: iommu: arm-smmu-v3: split probe functions into DT/generic portions Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
  [PATCH v7 09/16] drivers: acpi: iort: add support for ARM SMMU platform devices creation Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
  [PATCH v7 07/16] drivers: acpi: implement acpi_dma_configure Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-09 15:30 +0100
    Re: [PATCH v7 07/16] drivers: acpi: implement acpi_dma_configure Robin Murphy <robin.murphy@arm.com> - 2016-11-09 16:50 +0100
  Re: [PATCH v7 00/16] ACPI IORT ARM SMMU support "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-10 00:40 +0100
    Re: [PATCH v7 00/16] ACPI IORT ARM SMMU support Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-10 12:00 +0100
  Re: [PATCH v7 00/16] ACPI IORT ARM SMMU support Hanjun Guo <hanjun.guo@linaro.org> - 2016-11-11 13:50 +0100

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