LXR linux/arch/score/include/asm/delay.h

   1#ifndef _ASM_SCORE_DELAY_H
   2#define _ASM_SCORE_DELAY_H
   3
   4#include <asm-generic/param.h>
   5
   6static inline void __delay(unsigned long loops)
   7{
   8        /* 3 cycles per loop. */
   9        __asm__ __volatile__ (
  10                "1:\tsubi\t%0, 3\n\t"
  11                "cmpz.c\t%0\n\t"
  12                "ble\t1b\n\t"
  13                : "=r" (loops)
  14                : "0" (loops));
  15}
  16
  17static inline void __udelay(unsigned long usecs)
  18{
  19        unsigned long loops_per_usec;
  20
  21        loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
  22
  23        __delay(usecs * loops_per_usec);
  24}
  25
  26#define udelay(usecs) __udelay(usecs)
  27
  28#endif /* _ASM_SCORE_DELAY_H */
  29