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Linux/arch/score/include/asm/delay.h

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  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                 : "" (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 */
 29 

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