EDP: remove old system EDP framework (imx135 and ar0261 drivers)
[linux-3.10.git] / include / asm-generic / delay.h
1 #ifndef __ASM_GENERIC_DELAY_H
2 #define __ASM_GENERIC_DELAY_H
3
4 /* Undefined functions to get compile-time errors */
5 extern void __bad_udelay(void);
6 extern void __bad_ndelay(void);
7
8 extern void __udelay(unsigned long usecs);
9 extern void __ndelay(unsigned long nsecs);
10 extern void __const_udelay(unsigned long xloops);
11 extern void __delay(unsigned long loops);
12
13 /*
14  * The weird n/20000 thing suppresses a "comparison is always false due to
15  * limited range of data type" warning with non-const 8-bit arguments.
16  */
17
18 /* 0x10c7 is 2**32 / 1000000 (rounded up) */
19 #define udelay(n)                                                       \
20         ({                                                              \
21                 if (__builtin_constant_p(n)) {                          \
22                         if ((n) / 20000 >= 1)                           \
23                                  __bad_udelay();                        \
24                         else                                            \
25                                 __const_udelay((n) * 0x10c7ul);         \
26                 } else {                                                \
27                         __udelay(n);                                    \
28                 }                                                       \
29         })
30
31 /* 0x5 is 2**32 / 1000000000 (rounded up) */
32 #define ndelay(n)                                                       \
33         ({                                                              \
34                 if (__builtin_constant_p(n)) {                          \
35                         if ((n) / 20000 >= 1)                           \
36                                 __bad_ndelay();                         \
37                         else                                            \
38                                 __const_udelay((n) * 5ul);              \
39                 } else {                                                \
40                         __ndelay(n);                                    \
41                 }                                                       \
42         })
43
44 #endif /* __ASM_GENERIC_DELAY_H */