diff options
Diffstat (limited to 'include/asm-arm/delay.h')
-rw-r--r-- | include/asm-arm/delay.h | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/include/asm-arm/delay.h b/include/asm-arm/delay.h deleted file mode 100644 index b2deda181549..000000000000 --- a/include/asm-arm/delay.h +++ /dev/null | |||
@@ -1,44 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (C) 1995-2004 Russell King | ||
3 | * | ||
4 | * Delay routines, using a pre-computed "loops_per_second" value. | ||
5 | */ | ||
6 | #ifndef __ASM_ARM_DELAY_H | ||
7 | #define __ASM_ARM_DELAY_H | ||
8 | |||
9 | #include <asm/param.h> /* HZ */ | ||
10 | |||
11 | extern void __delay(int loops); | ||
12 | |||
13 | /* | ||
14 | * This function intentionally does not exist; if you see references to | ||
15 | * it, it means that you're calling udelay() with an out of range value. | ||
16 | * | ||
17 | * With currently imposed limits, this means that we support a max delay | ||
18 | * of 2000us. Further limits: HZ<=1000 and bogomips<=3355 | ||
19 | */ | ||
20 | extern void __bad_udelay(void); | ||
21 | |||
22 | /* | ||
23 | * division by multiplication: you don't have to worry about | ||
24 | * loss of precision. | ||
25 | * | ||
26 | * Use only for very small delays ( < 1 msec). Should probably use a | ||
27 | * lookup table, really, as the multiplications take much too long with | ||
28 | * short delays. This is a "reasonable" implementation, though (and the | ||
29 | * first constant multiplications gets optimized away if the delay is | ||
30 | * a constant) | ||
31 | */ | ||
32 | extern void __udelay(unsigned long usecs); | ||
33 | extern void __const_udelay(unsigned long); | ||
34 | |||
35 | #define MAX_UDELAY_MS 2 | ||
36 | |||
37 | #define udelay(n) \ | ||
38 | (__builtin_constant_p(n) ? \ | ||
39 | ((n) > (MAX_UDELAY_MS * 1000) ? __bad_udelay() : \ | ||
40 | __const_udelay((n) * ((2199023U*HZ)>>11))) : \ | ||
41 | __udelay(n)) | ||
42 | |||
43 | #endif /* defined(_ARM_DELAY_H) */ | ||
44 | |||