1 /*
2 * Copyright (c) 2014 François Tigeot
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef _LINUX_DELAY_H_
28 #define _LINUX_DELAY_H_
29
30 #include <linux/jiffies.h>
31 #include <sys/systm.h>
32
msleep(unsigned int msecs)33 static inline void msleep(unsigned int msecs)
34 {
35 static int dummy;
36 int delay = MAX(msecs*hz/1000, 1);
37
38 tsleep(&dummy, 0, "linux_msleep", delay);
39 }
40
41 static __inline void
mdelay(unsigned long msecs)42 mdelay(unsigned long msecs)
43 {
44 int loops = msecs;
45 while (loops--)
46 DELAY(1000);
47 }
48
ndelay(unsigned long x)49 static inline void ndelay(unsigned long x)
50 {
51 DELAY(howmany(x, 1000));
52 }
53
54 static __inline void
usleep_range(unsigned long min,unsigned long max)55 usleep_range(unsigned long min, unsigned long max)
56 {
57 DELAY(min);
58 }
59
60 #endif /* _LINUX_DELAY_H_ */
61