MN10300: Generic time support

Implement generic time support for MN10300.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/arch/mn10300/kernel/csrc-mn10300.c b/arch/mn10300/kernel/csrc-mn10300.c
new file mode 100644
index 000000000000..ba2f0c4d6e01
--- /dev/null
+++ b/arch/mn10300/kernel/csrc-mn10300.c
@@ -0,0 +1,35 @@
+/* MN10300 clocksource
+ *
+ * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
+ * Written by Mark Salter (msalter@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/clocksource.h>
+#include <linux/init.h>
+#include <asm/timex.h>
+#include "internal.h"
+
+static cycle_t mn10300_read(struct clocksource *cs)
+{
+        return read_timestamp_counter();
+}
+
+static struct clocksource clocksource_mn10300 = {
+        .name   = "TSC",
+        .rating = 200,
+        .read   = mn10300_read,
+        .mask   = CLOCKSOURCE_MASK(32),
+        .flags  = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+int __init init_clocksource(void)
+{
+        startup_timestamp_counter();
+        clocksource_set_clock(&clocksource_mn10300, MN10300_TSCCLK);
+        clocksource_register(&clocksource_mn10300);
+        return 0;
+}