kernel/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
   6 static 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
  17 static 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 */