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authorWill Deacon <will.deacon@arm.com>2014-08-27 19:20:32 +0400
committerWill Deacon <will.deacon@arm.com>2014-12-01 19:50:38 +0300
commit7eba1d51485197fa77c43c42eae3ce04b4b1c1c0 (patch)
treeace7a25c7d2aaf0e6250d60db0ee08faf55bf201 /include/linux/of_iommu.h
parentd0f60a44f5120a8e1c48995285c7d8d1e4915b35 (diff)
downloadlinux-7eba1d51485197fa77c43c42eae3ce04b4b1c1c0.tar.xz
iommu: provide helper function to configure an IOMMU for an of master
The generic IOMMU device-tree bindings can be used to add arbitrary OF masters to an IOMMU with a compliant binding. This patch introduces of_iommu_configure, which does exactly that. Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Joerg Roedel <jroedel@suse.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include/linux/of_iommu.h')
-rw-r--r--include/linux/of_iommu.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h
index 5762cdc8effe..d03abbb11c34 100644
--- a/include/linux/of_iommu.h
+++ b/include/linux/of_iommu.h
@@ -1,6 +1,7 @@
#ifndef __OF_IOMMU_H
#define __OF_IOMMU_H
+#include <linux/device.h>
#include <linux/iommu.h>
#include <linux/of.h>
@@ -11,6 +12,7 @@ extern int of_get_dma_window(struct device_node *dn, const char *prefix,
size_t *size);
extern void of_iommu_init(void);
+extern struct iommu_ops *of_iommu_configure(struct device *dev);
#else
@@ -22,6 +24,10 @@ static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
}
static inline void of_iommu_init(void) { }
+static inline struct iommu_ops *of_iommu_configure(struct device *dev)
+{
+ return NULL;
+}
#endif /* CONFIG_OF_IOMMU */