1 files changed, 75 insertions, 0 deletions

diff --git a/arch/arm/mach-lh7a40x/time.c b/arch/arm/mach-lh7a40x/time.c
new file mode 100644
index 000000000000..51e1c814b400
--- /dev/null
+++ b/arch/arm/mach-lh7a40x/time.c
@@ -0,0 +1,75 @@
+/* 
+ *  arch/arm/mach-lh7a40x/time.c
+ *
+ *  Copyright (C) 2004 Logic Product Development
+ *
+ *  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/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/leds.h>
+
+#include <asm/mach/time.h>
+#include "common.h"
+
+#if HZ < 100
+# define TIMER_CONTROL  TIMER_CONTROL2
+# define TIMER_LOAD     TIMER_LOAD2
+# define TIMER_CONSTANT (508469/HZ)
+# define TIMER_MODE     (TIMER_C_ENABLE | TIMER_C_PERIODIC | TIMER_C_508KHZ)
+# define TIMER_EOI      TIMER_EOI2
+# define TIMER_IRQ      IRQ_T2UI
+#else
+# define TIMER_CONTROL  TIMER_CONTROL3
+# define TIMER_LOAD     TIMER_LOAD3
+# define TIMER_CONSTANT (3686400/HZ)
+# define TIMER_MODE     (TIMER_C_ENABLE | TIMER_C_PERIODIC)
+# define TIMER_EOI      TIMER_EOI3
+# define TIMER_IRQ      IRQ_T3UI
+#endif
+
+static irqreturn_t
+lh7a40x_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        write_seqlock(&xtime_lock);
+
+        TIMER_EOI = 0;
+        timer_tick(regs);
+
+        write_sequnlock(&xtime_lock);
+
+        return IRQ_HANDLED;
+}
+
+static struct irqaction lh7a40x_timer_irq = {
+        .name           = "LHA740x Timer Tick",
+        .flags          = SA_INTERRUPT,
+        .handler        = lh7a40x_timer_interrupt
+};
+
+static void __init lh7a40x_timer_init(void)
+{
+                                /* Stop/disable all timers */
+        TIMER_CONTROL1 = 0;
+        TIMER_CONTROL2 = 0;
+        TIMER_CONTROL3 = 0;
+
+        setup_irq (TIMER_IRQ, &lh7a40x_timer_irq);
+
+        TIMER_LOAD = TIMER_CONSTANT;
+        TIMER_CONTROL = TIMER_MODE;
+}
+
+struct sys_timer lh7a40x_timer = {
+        .init           = &lh7a40x_timer_init,
+};