1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1994 by Waldorf Electronics 7 * Copyright (C) 1995 - 2000, 01, 03 by Ralf Baechle 8 * Copyright (C) 1999, 2000 Silicon Graphics, Inc. 9 * Copyright (C) 2007 Maciej W. Rozycki 10 */ 11#ifndef _ASM_DELAY_H 12#define _ASM_DELAY_H 13 14#include <linux/param.h> 15 16extern void __delay(unsigned long loops); 17extern void __ndelay(unsigned long ns); 18extern void __udelay(unsigned long us); 19 20#define ndelay(ns) __ndelay(ns) 21#define udelay(us) __udelay(us) 22 23/* make sure "usecs *= ..." in udelay do not overflow. */ 24#if HZ >= 1000 25#define MAX_UDELAY_MS 1 26#elif HZ <= 200 27#define MAX_UDELAY_MS 5 28#else 29#define MAX_UDELAY_MS (1000 / HZ) 30#endif 31 32#endif /* _ASM_DELAY_H */ 33