sparc: Implement irq_of_parse_and_map() and irq_dispose_mapping().
This allows more OF layer code to be shared between powerpc and
sparc.
With feedback and suggestions from Anton Vorontsov.
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
arch/sparc/include/asm/prom.h | 10 ++++++++++
arch/sparc/kernel/of_device.c | 11 +++++++++++
arch/sparc64/kernel/of_device.c | 11 +++++++++++
3 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h
index fd55522..b44e0c7 100644
--- a/arch/sparc/include/asm/prom.h
+++ b/arch/sparc/include/asm/prom.h
@@ -94,6 +94,16 @@ 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 unsigned int irq_of_parse_and_map(struct device_node *node, int index);
+static inline void irq_dispose_mapping(unsigned int virq)
+{
+}
+
/*
* 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 cc4c235..aace71f 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);
+unsigned 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 0;
+
+ 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);
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index f8b50cb..a30f2af 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -55,6 +55,17 @@ struct of_device *of_find_device_by_node(struct device_node *dp)
}
EXPORT_SYMBOL(of_find_device_by_node);
+unsigned 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 0;
+
+ 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);
--
1.5.6.5.GIT
--
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