2 * linux/arch/sh/boards/se/7300/led.c
4 * Derived from linux/arch/sh/boards/se/770x/led.c
6 * Copyright (C) 2000 Stuart Menefy <stuart.menefy@st.com>
8 * May be copied or modified under the terms of the GNU General Public
9 * License. See linux/COPYING for more information.
11 * This file contains Solution Engine specific LED code.
14 #include <linux/sched.h>
15 #include <asm/se7300.h>
17 /* Cycle the LED's in the clasic Knightrider/Sun pattern */
18 void heartbeat_7300se(void)
20 static unsigned int cnt = 0, period = 0;
21 volatile unsigned short *p = (volatile unsigned short *) PA_LED;
22 static unsigned bit = 0, up = 1;
31 /* Go through the points (roughly!):
32 * f(0)=10, f(1)=16, f(2)=20, f(5)=35,f(inf)->110
34 period = 110 - ((300 << FSHIFT) / ((avenrun[0] / 5) + (3 << FSHIFT)));