/* * 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 voidmach_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 */voidheartbeat_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);}