| #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) */ | |