| Jeff Dike | 060e352 | 2005-05-20 13:59:08 -0700 | [diff] [blame] | 1 | #include <linux/module.h> |
| 2 | #include <linux/kernel.h> |
| 3 | #include <linux/delay.h> |
| 4 | #include <asm/param.h> |
| Bodo Stroesser | 5fd861b | 2005-05-05 16:15:37 -0700 | [diff] [blame] | 5 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | void __delay(unsigned long time) |
| 7 | { |
| 8 | /* Stolen from the i386 __loop_delay */ |
| 9 | int d0; |
| 10 | __asm__ __volatile__( |
| 11 | "\tjmp 1f\n" |
| 12 | ".align 16\n" |
| 13 | "1:\tjmp 2f\n" |
| 14 | ".align 16\n" |
| 15 | "2:\tdecl %0\n\tjns 2b" |
| 16 | :"=&a" (d0) |
| 17 | :"0" (time)); |
| 18 | } |
| 19 | |
| Bodo Stroesser | 5fd861b | 2005-05-05 16:15:37 -0700 | [diff] [blame] | 20 | void __udelay(unsigned long usecs) |
| 21 | { |
| 22 | int i, n; |
| 23 | |
| 24 | n = (loops_per_jiffy * HZ * usecs) / MILLION; |
| Jeff Dike | 060e352 | 2005-05-20 13:59:08 -0700 | [diff] [blame] | 25 | for(i=0;i<n;i++) |
| 26 | cpu_relax(); |
| Bodo Stroesser | 5fd861b | 2005-05-05 16:15:37 -0700 | [diff] [blame] | 27 | } |
| 28 | |
| Jeff Dike | 060e352 | 2005-05-20 13:59:08 -0700 | [diff] [blame] | 29 | EXPORT_SYMBOL(__udelay); |