projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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. | |
| 20d60d99 | 9 | * Copyright (C) 2007 Maciej W. Rozycki |
| 1da177e4 LT |
10 | */ |
| 11 | #ifndef _ASM_DELAY_H | |
| 12 | #define _ASM_DELAY_H | |
| 13 | ||
| e3bf887d RB |
14 | #include <linux/param.h> |
| 15 | ||
| 5210edcd DD |
16 | extern void __delay(unsigned long loops); |
| 17 | extern void __ndelay(unsigned long ns); | |
| 18 | extern void __udelay(unsigned long us); | |
| 20d60d99 | 19 | |
| 39027ff0 | 20 | #define ndelay(ns) __ndelay(ns) |
| 5636919b | 21 | #define udelay(us) __udelay(us) |
| 1da177e4 | 22 | |
| a0f08209 AN |
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 | ||
| 1da177e4 | 32 | #endif /* _ASM_DELAY_H */ |