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authorYoshinori Sato <ysato@users.sourceforge.jp>2006-11-05 16:21:09 +0900
committerPaul Mundt <lethal@linux-sh.org>2006-12-06 10:45:37 +0900
commitf36af3fd377081d3ac2ff6b63a60f8db8b3bf531 (patch)
tree04704043666c5fdc0b8db91a640eaf694f61803e /arch/sh/boards/se/7206/led.c
parentb229632abd451ab2c797010b9788e48c9314db4f (diff)
downloadlinux-2.6.34-ux500-f36af3fd377081d3ac2ff6b63a60f8db8b3bf531.tar.gz
sh: Add support for Solution Engine 7206 and 7619 boards.
This adds support for the Solution Engine 7206 and 7619. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards/se/7206/led.c')
-rw-r--r--arch/sh/boards/se/7206/led.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/sh/boards/se/7206/led.c b/arch/sh/boards/se/7206/led.c
new file mode 100644
index 00000000000..ef794601ab8
--- /dev/null
+++ b/arch/sh/boards/se/7206/led.c
@@ -0,0 +1,57 @@
+/*
+ * linux/arch/sh/kernel/led_se.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 <asm/se7206.h>
+
+#ifdef CONFIG_HEARTBEAT
+
+#include <linux/sched.h>
+
+/* Cycle the LED's in the clasic Knightrider/Sun pattern */
+void heartbeat_se(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);
+
+}
+#endif /* CONFIG_HEARTBEAT */