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
   7 static 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
  18 static 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 */