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[PATCH_V2 11/34] MIPS: jz4740: register an irq_domain for the interrupt

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Subject: [PATCH_V2 11/34] MIPS: jz4740: register an irq_domain for the interrupt controller
From: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Date: Wed, 4 Feb 2015 15:21:40 +0000
Cc: <devicetree@vger.kernel.org>, <linux-serial@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <Zubair.Kakakhel@imgtec.com>, <gregkh@linuxfoundation.org>, <mturquette@linaro.org>, <sboyd@codeaurora.org>, <ralf@linux-mips.org>, <jslaby@suse.cz>, <tglx@linutronix.de>, <jason@lakedaemon.net>, <lars@metafoo.de>, <paul.burton@imgtec.com>
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From: Paul Burton <paul.burton@imgtec.com>

When probining the interrupt controller, register an IRQ domain such
that the interrupts can be translated by devicetree code & thus used
from devicetree.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
---
 arch/mips/jz4740/irq.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/jz4740/irq.c b/arch/mips/jz4740/irq.c
index 9a8bda3..a620b23 100644
--- a/arch/mips/jz4740/irq.c
+++ b/arch/mips/jz4740/irq.c
@@ -82,6 +82,7 @@ static int __init jz4740_intc_of_init(struct device_node 
*node,
 {
        struct irq_chip_generic *gc;
        struct irq_chip_type *ct;
+       struct irq_domain *domain;
        int parent_irq;
 
        parent_irq = irq_of_parse_and_map(node, 0);
@@ -110,6 +111,11 @@ static int __init jz4740_intc_of_init(struct device_node 
*node,
 
        irq_setup_generic_chip(gc, IRQ_MSK(32), 0, 0, IRQ_NOPROBE | IRQ_LEVEL);
 
+       domain = irq_domain_add_legacy(node, num_chips * 32, JZ4740_IRQ_BASE, 0,
+                                      &irq_domain_simple_ops, NULL);
+       if (!domain)
+               pr_warn("unable to register IRQ domain\n");
+
        setup_irq(parent_irq, &jz4740_cascade_action);
        return 0;
 }
-- 
1.9.1


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