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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2016-11-21 13:01:38 +0300
committerWill Deacon <will.deacon@arm.com>2016-11-29 18:57:44 +0300
commit778de074537582f86637f2240a8e369833372341 (patch)
tree4c5bf14cae71740bc8d7b3d60a75f46192b0b890 /drivers/iommu
parentce9babe5f66df2c486a5faf9cb76c9a38c78d401 (diff)
downloadlinux-778de074537582f86637f2240a8e369833372341.tar.xz
iommu/arm-smmu-v3: Convert struct device of_node to fwnode usage
Current ARM SMMU v3 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-v3.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 13ac9d896e3e..1406e1fd3847 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1723,13 +1723,14 @@ static struct platform_driver arm_smmu_driver;
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;
}
@@ -1765,7 +1766,7 @@ static int arm_smmu_add_device(struct device *dev)
master = fwspec->iommu_priv;
smmu = master->smmu;
} else {
- smmu = arm_smmu_get_by_node(to_of_node(fwspec->iommu_fwnode));
+ smmu = arm_smmu_get_by_fwnode(fwspec->iommu_fwnode);
if (!smmu)
return -ENODEV;
master = kzalloc(sizeof(*master), GFP_KERNEL);
@@ -2634,7 +2635,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
return ret;
/* And we're up. Go go go! */
- of_iommu_set_ops(dev->of_node, &arm_smmu_ops);
+ iommu_register_instance(dev->fwnode, &arm_smmu_ops);
+
#ifdef CONFIG_PCI
if (pci_bus_type.iommu_ops != &arm_smmu_ops) {
pci_request_acs();