From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 16 Apr 2005 15:20:36 -0700
Subject: Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
---
 arch/arm/mach-epxa10db/time.c | 78 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 arch/arm/mach-epxa10db/time.c

(limited to 'arch/arm/mach-epxa10db/time.c')

diff --git a/arch/arm/mach-epxa10db/time.c b/arch/arm/mach-epxa10db/time.c
new file mode 100644
index 000000000000..1b991f3cc3c6
--- /dev/null
+++ b/arch/arm/mach-epxa10db/time.c
@@ -0,0 +1,78 @@
+/*
+ *  linux/arch/arm/mach-epxa10db/time.c
+ *
+ *  Copyright (C) 2000 Deep Blue Solutions
+ *  Copyright (C) 2001 Altera 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
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+
+#include <asm/hardware.h>
+#include <asm/system.h>
+#include <asm/leds.h>
+
+#include <asm/mach/time.h>
+
+#define TIMER00_TYPE (volatile unsigned int*)
+#include <asm/arch/timer00.h>
+
+static int epxa10db_set_rtc(void)
+{
+	return 1;
+}
+
+static int epxa10db_rtc_init(void)
+{
+	set_rtc = epxa10db_set_rtc;
+
+	return 0;
+}
+
+__initcall(epxa10db_rtc_init);
+
+
+/*
+ * IRQ handler for the timer
+ */
+static irqreturn_t
+epxa10db_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	write_seqlock(&xtime_lock);
+
+	// ...clear the interrupt
+	*TIMER0_CR(IO_ADDRESS(EXC_TIMER00_BASE))|=TIMER0_CR_CI_MSK;
+
+	timer_tick(regs);
+	write_sequnlock(&xtime_lock);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction epxa10db_timer_irq = {
+	.name		= "Excalibur Timer Tick",
+	.flags		= SA_INTERRUPT,
+	.handler	= epxa10db_timer_interrupt
+};
+
+/*
+ * Set up timer interrupt, and return the current time in seconds.
+ */
+static void __init epxa10db_timer_init(void)
+{
+	/* Start the timer */
+	*TIMER0_LIMIT(IO_ADDRESS(EXC_TIMER00_BASE))=(unsigned int)(EXC_AHB2_CLK_FREQUENCY/200);
+	*TIMER0_PRESCALE(IO_ADDRESS(EXC_TIMER00_BASE))=1;
+	*TIMER0_CR(IO_ADDRESS(EXC_TIMER00_BASE))=TIMER0_CR_IE_MSK | TIMER0_CR_S_MSK;
+
+	setup_irq(IRQ_TIMER0, &epxa10db_timer_irq);
+}
+
+struct sys_timer epxa10db_timer = {
+	.init		= epxa10db_timer_init,
+};
-- 
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