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Diffstat (limited to 'include/asm-v850/delay.h')
| -rw-r--r-- | include/asm-v850/delay.h | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/include/asm-v850/delay.h b/include/asm-v850/delay.h deleted file mode 100644 index 6d028e6b235..00000000000 --- a/include/asm-v850/delay.h +++ /dev/null @@ -1,47 +0,0 @@ -/* - * include/asm-v850/delay.h -- Delay routines, using a pre-computed - * "loops_per_second" value - * - * Copyright (C) 2001,03 NEC Corporation - * Copyright (C) 2001,03 Miles Bader <miles@gnu.org> - * Copyright (C) 1994 Hamish Macdonald - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file COPYING in the main directory of this - * archive for more details. - */ - -#ifndef __V850_DELAY_H__ -#define __V850_DELAY_H__ - -#include <asm/param.h> - -static inline void __delay(unsigned long loops) -{ - if (loops) - __asm__ __volatile__ ("1: add -1, %0; bnz 1b" - : "=r" (loops) : "0" (loops)); -} - -/* - * Use only for very small delays ( < 1 msec). Should probably use a - * lookup table, really, as the multiplications take much too long with - * short delays. This is a "reasonable" implementation, though (and the - * first constant multiplications gets optimized away if the delay is - * a constant) - */ - -extern unsigned long loops_per_jiffy; - -static inline void udelay(unsigned long usecs) -{ - register unsigned long full_loops, part_loops; - - full_loops = ((usecs * HZ) / 1000000) * loops_per_jiffy; - usecs %= (1000000 / HZ); - part_loops = (usecs * HZ * loops_per_jiffy) / 1000000; - - __delay(full_loops + part_loops); -} - -#endif /* __V850_DELAY_H__ */ |