X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsh%2Fboards%2Fse%2F7343%2Fled.c;fp=arch%2Fsh%2Fboards%2Fse%2F7343%2Fled.c;h=6b39e191c4209ee8ac50b51d463625e2ec9cf321;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/arch/sh/boards/se/7343/led.c b/arch/sh/boards/se/7343/led.c
new file mode 100644
index 000000000..6b39e191c
--- /dev/null
+++ b/arch/sh/boards/se/7343/led.c
@@ -0,0 +1,44 @@
+/*
+ * arch/sh/boards/se/7343/led.c
+ *
+ */
+#include <linux/sched.h>
+#include <asm/mach/se7343.h>
+
+/* Cycle the LED's in the clasic Knightrider/Sun pattern */
+void heartbeat_7343se(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);
+
+}