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