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 extern void __delay(unsigned int loops); 15 extern void __ndelay(unsigned int ns); 16 extern void __udelay(unsigned int us); 17 18 #define ndelay(ns) __ndelay(ns) 19 #define udelay(us) __udelay(us) 20 21 /* make sure "usecs *= ..." in udelay do not overflow. */ 22 #if HZ >= 1000 23 #define MAX_UDELAY_MS 1 24 #elif HZ <= 200 25 #define MAX_UDELAY_MS 5 26 #else 27 #define MAX_UDELAY_MS (1000 / HZ) 28 #endif 29 30 #endif /* _ASM_DELAY_H */ 31