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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/asm-arm26/delay.h
1 #ifndef __ASM_ARM_DELAY_H
2 #define __ASM_ARM_DELAY_H
5 * Copyright (C) 1995 Russell King
7 * Delay routines, using a pre-computed "loops_per_second" value.
10 extern void __delay(int loops
);
13 * division by multiplication: you don't have to worry about
16 * Use only for very small delays ( < 1 msec). Should probably use a
17 * lookup table, really, as the multiplications take much too long with
18 * short delays. This is a "reasonable" implementation, though (and the
19 * first constant multiplications gets optimized away if the delay is
22 * FIXME - lets improve it then...
24 extern void udelay(unsigned long usecs
);
26 static inline unsigned long muldiv(unsigned long a
, unsigned long b
, unsigned long c
)
33 #endif /* defined(_ARM_DELAY_H) */