[PATCH v3 02/10] OF: convert of_translate_address to new API

[Sebastian Hesselbarth]

This converts existing of_translate_address to recently added API. In
contrast to existing behavior, the new function honors ranges properties
properly. It now allows reg properties to be set as offset with respect
to the correspoding parent node.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
---
Cc: barebox at lists.infradead.org
---
 drivers/of/address.c |    6 ++++++
 drivers/of/base.c    |   26 +-------------------------
 include/of.h         |    2 --
 include/of_address.h |    8 ++++++++
 4 files changed, 15 insertions(+), 27 deletions(-)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index 3e5387a..4cacdb1 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -278,6 +278,12 @@ static u64 __of_translate_address(struct device_node *dev,
 	return result;
 }
 
+u64 of_translate_address(struct device_node *dev, const __be32 *in_addr)
+{
+	return __of_translate_address(dev, in_addr, "ranges");
+}
+EXPORT_SYMBOL(of_translate_address);
+
 u64 of_translate_dma_address(struct device_node *dev, const __be32 *in_addr)
 {
 	return __of_translate_address(dev, in_addr, "dma-ranges");
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 63ff647..2778230 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -19,6 +19,7 @@
  */
 #include <common.h>
 #include <of.h>
+#include <of_address.h>
 #include <errno.h>
 #include <malloc.h>
 #include <init.h>
@@ -242,31 +243,6 @@ const char *of_alias_get(struct device_node *np)
 }
 EXPORT_SYMBOL_GPL(of_alias_get);
 
-u64 of_translate_address(struct device_node *node, const __be32 *in_addr)
-{
-	struct property *p;
-	u64 addr = be32_to_cpu(*in_addr);
-
-	while (1) {
-		int na, nc;
-
-		if (!node->parent)
-			return addr;
-
-		node = node->parent;
-		p = of_find_property(node, "ranges", NULL);
-		if (!p && node->parent)
-			return OF_BAD_ADDR;
-		of_bus_count_cells(node, &na, &nc);
-		if (na != 1 || nc != 1) {
-			printk("%s: #size-cells != 1 or #address-cells != 1 "
-					"currently not supported\n", node->name);
-			return OF_BAD_ADDR;
-		}
-	}
-}
-EXPORT_SYMBOL(of_translate_address);
-
 /*
  * of_find_node_by_phandle - Find a node given a phandle
  * @handle:    phandle of the node to find
diff --git a/include/of.h b/include/of.h
index b392ca9..e091326 100644
--- a/include/of.h
+++ b/include/of.h
@@ -101,8 +101,6 @@ int of_get_named_gpio(struct device_node *np,
 void of_print_property(const void *data, int len);
 void of_print_cmdline(struct device_node *root);
 
-u64 of_translate_address(struct device_node *node, const __be32 *in_addr);
-
 #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
 #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
 
diff --git a/include/of_address.h b/include/of_address.h
index a82e2e5..9022ab7 100644
--- a/include/of_address.h
+++ b/include/of_address.h
@@ -10,6 +10,8 @@ static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
 
 #ifdef CONFIG_OFTREE
 
+extern u64 of_translate_address(struct device_node *dev,
+				const __be32 *in_addr);
 extern u64 of_translate_dma_address(struct device_node *dev,
 				const __be32 *in_addr);
 extern bool of_can_translate_address(struct device_node *dev);
@@ -24,6 +26,12 @@ extern void __iomem *of_iomap(struct device_node *np, int index);
 
 #else /* CONFIG_OFTREE */
 
+static inline u64 of_translate_address(struct device_node *dev,
+				const __be32 *in_addr)
+{
+	return OF_BAD_ADDR;
+}
+
 static inline u64 of_translate_dma_address(struct device_node *dev,
 				const __be32 *in_addr)
 {
-- 
1.7.2.5