[RFC PATCH 1/3] dt: irq: add interrupt controller descriptor struct

[Rob Herring <robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

From: Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>

In preparation to scan and initialize interrupt controllers from a
device-tree, create struct to pass to interrupt controller initialization
functions.

irq_base should go away with dynamic linux irq assignment.

Signed-off-by: Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>
---
 include/linux/of_irq.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index cd2e61c..de91ff9 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -33,6 +33,12 @@ struct of_irq {
 	u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
 };
 
+struct of_intc_desc {
+	struct device_node *controller;
+	struct device_node *parent;
+	int irq_base;
+};
+
 /*
  * Workarounds only applied to 32bit powermac machines
  */
-- 
1.7.4.1