summaryrefslogtreecommitdiff
path: root/cleopatre/linux-2.6.25.10-spc300/arch/arm/mach-lh7a40x/time.c
diff options
context:
space:
mode:
Diffstat (limited to 'cleopatre/linux-2.6.25.10-spc300/arch/arm/mach-lh7a40x/time.c')
-rw-r--r--cleopatre/linux-2.6.25.10-spc300/arch/arm/mach-lh7a40x/time.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/cleopatre/linux-2.6.25.10-spc300/arch/arm/mach-lh7a40x/time.c b/cleopatre/linux-2.6.25.10-spc300/arch/arm/mach-lh7a40x/time.c
new file mode 100644
index 0000000000..e50e60b338
--- /dev/null
+++ b/cleopatre/linux-2.6.25.10-spc300/arch/arm/mach-lh7a40x/time.c
@@ -0,0 +1,71 @@
+/*
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irq.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)
+{
+ TIMER_EOI = 0;
+ timer_tick();
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction lh7a40x_timer_irq = {
+ .name = "LHA740x Timer Tick",
+ .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+ .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,
+};