linux-kernel - [PATCH_V2 11/34] MIPS: jz4740: register an irq

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Date:	Wed, 4 Feb 2015 15:21:40 +0000
From:	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
To:	<linux-mips@...ux-mips.org>
CC:	<devicetree@...r.kernel.org>, <linux-serial@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <Zubair.Kakakhel@...tec.com>,
	<gregkh@...uxfoundation.org>, <mturquette@...aro.org>,
	<sboyd@...eaurora.org>, <ralf@...ux-mips.org>, <jslaby@...e.cz>,
	<tglx@...utronix.de>, <jason@...edaemon.net>, <lars@...afoo.de>,
	<paul.burton@...tec.com>
Subject: [PATCH_V2 11/34] MIPS: jz4740: register an irq_domain for the interrupt controller

From: Paul Burton <paul.burton@...tec.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@...tec.com>
Cc: Lars-Peter Clausen <lars@...afoo.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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