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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_SCORE_DELAY_H
   3#define _ASM_SCORE_DELAY_H
   4
   5#include <asm-generic/param.h>
   6
   7static inline void __delay(unsigned long loops)
   8{
   9        /* 3 cycles per loop. */
  10        __asm__ __volatile__ (
  11                "1:\tsubi\t%0, 3\n\t"
  12                "cmpz.c\t%0\n\t"
  13                "ble\t1b\n\t"
  14                : "=r" (loops)
  15                : "0" (loops));
  16}
  17
  18static inline void __udelay(unsigned long usecs)
  19{
  20        unsigned long loops_per_usec;
  21
  22        loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
  23
  24        __delay(usecs * loops_per_usec);
  25}
  26
  27#define udelay(usecs) __udelay(usecs)
  28
  29#endif /* _ASM_SCORE_DELAY_H */
  30