1aafe4dbeSArnd Bergmann #ifndef __ASM_GENERIC_DELAY_H 2aafe4dbeSArnd Bergmann #define __ASM_GENERIC_DELAY_H 3aafe4dbeSArnd Bergmann 4*30ab2b03SJonas Bonn /* Undefined functions to get compile-time errors */ 5*30ab2b03SJonas Bonn extern void __bad_udelay(void); 6*30ab2b03SJonas Bonn extern void __bad_ndelay(void); 7*30ab2b03SJonas Bonn 8aafe4dbeSArnd Bergmann extern void __udelay(unsigned long usecs); 9*30ab2b03SJonas Bonn extern void __ndelay(unsigned long nsecs); 10*30ab2b03SJonas Bonn extern void __const_udelay(unsigned long xloops); 11aafe4dbeSArnd Bergmann extern void __delay(unsigned long loops); 12aafe4dbeSArnd Bergmann 13*30ab2b03SJonas Bonn /* 0x10c7 is 2**32 / 1000000 (rounded up) */ 14*30ab2b03SJonas Bonn #define udelay(n) (__builtin_constant_p(n) ? \ 15*30ab2b03SJonas Bonn ((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \ 16*30ab2b03SJonas Bonn __udelay(n)) 17*30ab2b03SJonas Bonn 18*30ab2b03SJonas Bonn /* 0x5 is 2**32 / 1000000000 (rounded up) */ 19*30ab2b03SJonas Bonn #define ndelay(n) (__builtin_constant_p(n) ? \ 20*30ab2b03SJonas Bonn ((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \ 21*30ab2b03SJonas Bonn __ndelay(n)) 22aafe4dbeSArnd Bergmann 23aafe4dbeSArnd Bergmann #endif /* __ASM_GENERIC_DELAY_H */ 24