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2#ifndef _LINUX_DELAY_H
3#define _LINUX_DELAY_H
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22#include <linux/kernel.h>
23
24extern unsigned long loops_per_jiffy;
25
26#include <asm/delay.h>
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37
38#ifndef MAX_UDELAY_MS
39#define MAX_UDELAY_MS 5
40#endif
41
42#ifndef mdelay
43#define mdelay(n) (\
44 (__builtin_constant_p(n) && (n)<=MAX_UDELAY_MS) ? udelay((n)*1000) : \
45 ({unsigned long __ms=(n); while (__ms--) udelay(1000);}))
46#endif
47
48#ifndef ndelay
49static inline void ndelay(unsigned long x)
50{
51 udelay(DIV_ROUND_UP(x, 1000));
52}
53#define ndelay(x) ndelay(x)
54#endif
55
56extern unsigned long lpj_fine;
57void calibrate_delay(void);
58void __attribute__((weak)) calibration_delay_done(void);
59void msleep(unsigned int msecs);
60unsigned long msleep_interruptible(unsigned int msecs);
61void usleep_range(unsigned long min, unsigned long max);
62
63static inline void ssleep(unsigned int seconds)
64{
65 msleep(seconds * 1000);
66}
67
68
69static inline void fsleep(unsigned long usecs)
70{
71 if (usecs <= 10)
72 udelay(usecs);
73 else if (usecs <= 20000)
74 usleep_range(usecs, 2 * usecs);
75 else
76 msleep(DIV_ROUND_UP(usecs, 1000));
77}
78
79#endif
80