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authorDavid S. Miller <davem@davemloft.net>2008-08-20 16:34:39 -0700
committerDavid S. Miller <davem@davemloft.net>2008-08-24 20:33:55 -0700
commit44266215e3c8209613cea014721015113b7cd2d9 (patch)
treec3da273c653514b55e348b8ae928545f3ca93e7a /arch/sparc
parent2481d76615d5e15340ccfb0243fe8779766dfc6e (diff)
sparc: Implement irq_of_parse_and_map() and irq_dispose_mapping().
This allows more OF layer code to be shared between powerpc and sparc. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/include/asm/prom.h8
-rw-r--r--arch/sparc/kernel/of_device.c11
2 files changed, 19 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h
index b5efc4d8523..58b85fa5606 100644
--- a/arch/sparc/include/asm/prom.h
+++ b/arch/sparc/include/asm/prom.h
@@ -96,6 +96,14 @@ static inline void of_node_put(struct device_node *node)
{
}
+/* These routines are here to provide compatibility with how powerpc
+ * handles IRQ mapping for OF device nodes. We precompute and permanently
+ * register them in the of_device objects, whereas powerpc computes them
+ * on request.
+ */
+extern int irq_of_parse_and_map(struct device_node *node, int index);
+#define irq_dispose_mapping(irq) do { } while (0)
+
/*
* NB: This is here while we transition from using asm/prom.h
* to linux/of.h
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index cc4c235c4f5..56e9a718ef8 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device.c
@@ -29,6 +29,17 @@ struct of_device *of_find_device_by_node(struct device_node *dp)
}
EXPORT_SYMBOL(of_find_device_by_node);
+int irq_of_parse_and_map(struct device_node *node, int index)
+{
+ struct of_device *op = of_find_device_by_node(node);
+
+ if (!op || index >= op->num_irqs)
+ return 0xffffffff;
+
+ return op->irqs[index];
+}
+EXPORT_SYMBOL(irq_of_parse_and_map);
+
#ifdef CONFIG_PCI
struct bus_type ebus_bus_type;
EXPORT_SYMBOL(ebus_bus_type);