1
2 #ifndef __ASM_GENERIC_DELAY_H
3 #define __ASM_GENERIC_DELAY_H
4
5
6 extern void __bad_udelay(void);
7 extern void __bad_ndelay(void);
8
9 extern void __udelay(unsigned long usecs);
10 extern void __ndelay(unsigned long nsecs);
11 extern void __const_udelay(unsigned long xloops);
12 extern void __delay(unsigned long loops);
13
14
15
16
17
18
19
20 #define udelay(n) \
21 ({ \
22 if (__builtin_constant_p(n)) { \
23 if ((n) / 20000 >= 1) \
24 __bad_udelay(); \
25 else \
26 __const_udelay((n) * 0x10c7ul); \
27 } else { \
28 __udelay(n); \
29 } \
30 })
31
32
33 #define ndelay(n) \
34 ({ \
35 if (__builtin_constant_p(n)) { \
36 if ((n) / 20000 >= 1) \
37 __bad_ndelay(); \
38 else \
39 __const_udelay((n) * 5ul); \
40 } else { \
41 __ndelay(n); \
42 } \
43 })
44
45 #endif