| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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. |
| Maciej W. Rozycki | 20d60d9 | 2007-10-23 12:43:11 +0100 | [diff] [blame] | 9 | * Copyright (C) 2007 Maciej W. Rozycki |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | */ |
| 11 | #ifndef _ASM_DELAY_H |
| 12 | #define _ASM_DELAY_H |
| 13 | |
| Ralf Baechle | e3bf887 | 2009-08-28 12:29:58 +0100 | [diff] [blame] | 14 | #include <linux/param.h> |
| 15 | |
| Ralf Baechle | 5636919 | 2009-02-28 09:44:28 +0000 | [diff] [blame] | 16 | extern void __delay(unsigned int loops); |
| 17 | extern void __ndelay(unsigned int ns); |
| 18 | extern void __udelay(unsigned int us); |
| Maciej W. Rozycki | 20d60d9 | 2007-10-23 12:43:11 +0100 | [diff] [blame] | 19 | |
| Ralf Baechle | 39027ff | 2009-06-12 17:28:00 +0100 | [diff] [blame] | 20 | #define ndelay(ns) __ndelay(ns) |
| Ralf Baechle | 5636919 | 2009-02-28 09:44:28 +0000 | [diff] [blame] | 21 | #define udelay(us) __udelay(us) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| Atsushi Nemoto | a0f0820 | 2005-11-05 02:02:54 +0900 | [diff] [blame] | 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 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #endif /* _ASM_DELAY_H */ |