| #ifndef __ASM_ARM_DELAY_H |
| #define __ASM_ARM_DELAY_H |
| |
| /* |
| * Copyright (C) 1995 Russell King |
| * |
| * Delay routines, using a pre-computed "loops_per_second" value. |
| */ |
| |
| extern void __delay(int loops); |
| |
| /* |
| * division by multiplication: you don't have to worry about |
| * loss of precision. |
| * |
| * Use only for very small delays ( < 1 msec). Should probably use a |
| * lookup table, really, as the multiplications take much too long with |
| * short delays. This is a "reasonable" implementation, though (and the |
| * first constant multiplications gets optimized away if the delay is |
| * a constant) |
| * |
| * FIXME - lets improve it then... |
| */ |
| extern void udelay(unsigned long usecs); |
| |
| static inline unsigned long muldiv(unsigned long a, unsigned long b, unsigned long c) |
| { |
| return a * b / c; |
| } |
| |
| |
| |
| #endif /* defined(_ARM_DELAY_H) */ |
| |