diff options
Diffstat (limited to 'include/asm-blackfin/delay.h')
-rw-r--r-- | include/asm-blackfin/delay.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/include/asm-blackfin/delay.h b/include/asm-blackfin/delay.h deleted file mode 100644 index 473a8113277f..000000000000 --- a/include/asm-blackfin/delay.h +++ /dev/null | |||
@@ -1,62 +0,0 @@ | |||
1 | /* | ||
2 | * delay.h - delay functions | ||
3 | * | ||
4 | * Copyright (c) 2004-2007 Analog Devices Inc. | ||
5 | * | ||
6 | * Licensed under the GPL-2 or later. | ||
7 | */ | ||
8 | |||
9 | #ifndef __ASM_DELAY_H__ | ||
10 | #define __ASM_DELAY_H__ | ||
11 | |||
12 | #include <asm/mach/anomaly.h> | ||
13 | |||
14 | static inline void __delay(unsigned long loops) | ||
15 | { | ||
16 | if (ANOMALY_05000312) { | ||
17 | /* Interrupted loads to loop registers -> bad */ | ||
18 | unsigned long tmp; | ||
19 | __asm__ __volatile__( | ||
20 | "[--SP] = LC0;" | ||
21 | "[--SP] = LT0;" | ||
22 | "[--SP] = LB0;" | ||
23 | "LSETUP (1f,1f) LC0 = %1;" | ||
24 | "1: NOP;" | ||
25 | /* We take advantage of the fact that LC0 is 0 at | ||
26 | * the end of the loop. Otherwise we'd need some | ||
27 | * NOPs after the CLI here. | ||
28 | */ | ||
29 | "CLI %0;" | ||
30 | "LB0 = [SP++];" | ||
31 | "LT0 = [SP++];" | ||
32 | "LC0 = [SP++];" | ||
33 | "STI %0;" | ||
34 | : "=d" (tmp) | ||
35 | : "a" (loops) | ||
36 | ); | ||
37 | } else | ||
38 | __asm__ __volatile__ ( | ||
39 | "LSETUP(1f, 1f) LC0 = %0;" | ||
40 | "1: NOP;" | ||
41 | : | ||
42 | : "a" (loops) | ||
43 | : "LT0", "LB0", "LC0" | ||
44 | ); | ||
45 | } | ||
46 | |||
47 | #include <linux/param.h> /* needed for HZ */ | ||
48 | |||
49 | /* | ||
50 | * Use only for very small delays ( < 1 msec). Should probably use a | ||
51 | * lookup table, really, as the multiplications take much too long with | ||
52 | * short delays. This is a "reasonable" implementation, though (and the | ||
53 | * first constant multiplications gets optimized away if the delay is | ||
54 | * a constant) | ||
55 | */ | ||
56 | static inline void udelay(unsigned long usecs) | ||
57 | { | ||
58 | extern unsigned long loops_per_jiffy; | ||
59 | __delay(usecs * loops_per_jiffy / (1000000 / HZ)); | ||
60 | } | ||
61 | |||
62 | #endif | ||