1 files changed, 67 insertions, 0 deletions
diff --git a/arch/sh/boards/se/73180/led.c b/arch/sh/boards/se/73180/led.c
new file mode 100644
index 000000000000..1e8f1cf3e10f
--- /dev/null
+++ b/arch/sh/boards/se/73180/led.c
@@ -0,0 +1,67 @@
+/*
+ * arch/sh/boards/se/73180/led.c
+ *
+ * Derived from arch/sh/boards/se/770x/led.c
+ *
+ * Copyright (C) 2000 Stuart Menefy <stuart.menefy@st.com>
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ *
+ * This file contains Solution Engine specific LED code.
+ */
+
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <asm/mach/se73180.h>
+
+static void
+mach_led(int position, int value)
+{
+	volatile unsigned short *p = (volatile unsigned short *) PA_LED;
+
+	if (value) {
+		*p |= (1 << LED_SHIFT);
+	} else {
+		*p &= ~(1 << LED_SHIFT);
+	}
+}
+
+/* Cycle the LED's in the clasic Knightrider/Sun pattern */
+void
+heartbeat_73180se(void)
+{
+	static unsigned int cnt = 0, period = 0;
+	volatile unsigned short *p = (volatile unsigned short *) PA_LED;
+	static unsigned bit = 0, up = 1;
+
+	cnt += 1;
+	if (cnt < period) {
+		return;
+	}
+
+	cnt = 0;
+
+	/* Go through the points (roughly!):
+	 * f(0)=10, f(1)=16, f(2)=20, f(5)=35,f(inf)->110
+	 */
+	period = 110 - ((300 << FSHIFT) / ((avenrun[0] / 5) + (3 << FSHIFT)));
+
+	if (up) {
+		if (bit == 7) {
+			bit--;
+			up = 0;
+		} else {
+			bit++;
+		}
+	} else {
+		if (bit == 0) {
+			bit++;
+			up = 1;
+		} else {
+			bit--;
+		}
+	}
+	*p = 1 << (bit + LED_SHIFT);
+
+}