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 | ||
| 5636919b RB |
14 | extern void __delay(unsigned int loops); |
| 15 | extern void __ndelay(unsigned int ns); | |
| 16 | extern void __udelay(unsigned int us); | |
| 20d60d99 | 17 | |
| 39027ff0 | 18 | #define ndelay(ns) __ndelay(ns) |
| 5636919b | 19 | #define udelay(us) __udelay(us) |
| 1da177e4 | 20 | |
| a0f08209 AN |
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 | ||
| 1da177e4 | 30 | #endif /* _ASM_DELAY_H */ |