linux-kernel - [PATCH 7/8] avr32: Add system device for the internal interrupt controller (intc)

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Date:	Mon, 30 Jun 2008 11:21:15 +0200
From:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
To:	kernel@...32linux.org
Cc:	linux-kernel@...r.kernel.org,
	Haavard Skinnemoen <hskinnemoen@...el.com>
Subject: [PATCH 7/8] avr32: Add system device for the internal interrupt controller (intc)

From: Haavard Skinnemoen <hskinnemoen@...el.com>

This makes the intc show up in sysfs (probably not very useful), and
allows us to easily add suspend/resume support later.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@...el.com>
---
 arch/avr32/mach-at32ap/intc.c |   28 +++++++++++++++++++++++++---
 1 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/arch/avr32/mach-at32ap/intc.c b/arch/avr32/mach-at32ap/intc.c
index 097cf4e..644a3fb 100644
--- a/arch/avr32/mach-at32ap/intc.c
+++ b/arch/avr32/mach-at32ap/intc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Atmel Corporation
+ * Copyright (C) 2006, 2008 Atmel Corporation
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -12,14 +12,16 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
+#include <linux/sysdev.h>
 
 #include <asm/io.h>
 
 #include "intc.h"
 
 struct intc {
-	void __iomem	*regs;
-	struct irq_chip	chip;
+	void __iomem		*regs;
+	struct irq_chip		chip;
+	struct sys_device	sysdev;
 };
 
 extern struct platform_device at32_intc0_device;
@@ -136,6 +138,26 @@ fail:
 	panic("Interrupt controller initialization failed!\n");
 }
 
+static struct sysdev_class intc_class = {
+	.name	= "intc",
+};
+
+static int __init intc_init_sysdev(void)
+{
+	int ret;
+
+	ret = sysdev_class_register(&intc_class);
+	if (ret)
+		return ret;
+
+	intc0.sysdev.id = 0;
+	intc0.sysdev.cls = &intc_class;
+	ret = sysdev_register(&intc0.sysdev);
+
+	return ret;
+}
+device_initcall(intc_init_sysdev);
+
 unsigned long intc_get_pending(unsigned int group)
 {
 	return intc_readl(&intc0, INTREQ0 + 4 * group);
-- 
1.5.5.4

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