1 files changed, 69 insertions, 0 deletions

diff --git a/arch/sh/boards/se/7300/led.c b/arch/sh/boards/se/7300/led.c
new file mode 100644
index 000000000000..02c7f846c84c
--- /dev/null
+++ b/arch/sh/boards/se/7300/led.c
@@ -0,0 +1,69 @@
+/*
+ * linux/arch/sh/boards/se/7300/led.c
+ *
+ * Derived from linux/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/se7300.h>
+
+static void
+mach_led(int position, int value)
+{
+        volatile unsigned short *p = (volatile unsigned short *) PA_LED;
+
+        if (value) {
+                *p |= (1 << 8);
+        } else {
+                *p &= ~(1 << 8);
+        }
+}
+
+
+/* Cycle the LED's in the clasic Knightrider/Sun pattern */
+void
+heartbeat_7300se(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 + 8);
+
+}
+