Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
14extern void __delay(unsigned int loops);
15extern void __ndelay(unsigned int ns);
16extern void __udelay(unsigned int us);
17
18#define ndelay(ns) __udelay(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 */