1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/mach-ns9xxx/irq-ns921x.c b/arch/arm/mach-ns9xxx/irq-ns921x.c
new file mode 100644
index 000000000000..1937d574a0e3
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/irq-ns921x.c
@@ -0,0 +1,57 @@
+/*
+ * arch/arm/mach-ns9xxx/irq-ns921x.c
+ *
+ * Copyright (C) 2008 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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 published by
+ * the Free Software Foundation.
+ */
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <mach/regs-sys-ns921x.h>
+
+#include "processor-ns921x.h"
+
+static const u32 ns921x_irq2powermask[] = {
+	[IRQ_NS9XXX_ETHRX] = SYS_POWER_ETH,
+	[IRQ_NS921X_UARTA] = SYS_POWER_UARTA,
+	[IRQ_NS921X_UARTB] = SYS_POWER_UARTB,
+	[IRQ_NS921X_UARTC] = SYS_POWER_UARTC,
+	[IRQ_NS921X_UARTD] = SYS_POWER_UARTD,
+	[IRQ_NS921X_SPI] = SYS_POWER_SPI,
+	[IRQ_NS921X_I2C] = SYS_POWER_I2C,
+	[IRQ_NS9215_RTC] = SYS_POWER_RTC,
+	[IRQ_NS9XXX_EXT0] = SYS_POWER_EXTIRQ0,
+	[IRQ_NS9XXX_EXT1] = SYS_POWER_EXTIRQ1,
+	[IRQ_NS9XXX_EXT2] = SYS_POWER_EXTIRQ2,
+	[IRQ_NS9XXX_EXT3] = SYS_POWER_EXTIRQ3,
+};
+
+int ns921x_set_wake_irq(unsigned int irq, unsigned int on)
+{
+	unsigned long flags;
+	u32 power;
+
+	if (irq > ARRAY_SIZE(ns921x_irq2powermask) ||
+			!ns921x_irq2powermask[irq])
+		return -ENOENT;
+
+	local_irq_save(flags);
+
+	power = __raw_readl(SYS_POWER);
+
+	if (on)
+		power |= ns921x_irq2powermask[irq];
+	else
+		power &= ~ns921x_irq2powermask[irq];
+
+	__raw_writel(power, SYS_POWER);
+
+	local_irq_restore(flags);
+
+	return 0;
+}