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Commit | Line | Data |
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aafe4dbe AB |
1 | #ifndef __ASM_GENERIC_DELAY_H |
2 | #define __ASM_GENERIC_DELAY_H | |
3 | ||
30ab2b03 JB |
4 | /* Undefined functions to get compile-time errors */ |
5 | extern void __bad_udelay(void); | |
6 | extern void __bad_ndelay(void); | |
7 | ||
aafe4dbe | 8 | extern void __udelay(unsigned long usecs); |
30ab2b03 JB |
9 | extern void __ndelay(unsigned long nsecs); |
10 | extern void __const_udelay(unsigned long xloops); | |
aafe4dbe AB |
11 | extern void __delay(unsigned long loops); |
12 | ||
30ab2b03 JB |
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)) : \ | |
16 | __udelay(n)) | |
17 | ||
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)) : \ | |
21 | __ndelay(n)) | |
aafe4dbe AB |
22 | |
23 | #endif /* __ASM_GENERIC_DELAY_H */ |