diff options
Diffstat (limited to '')
-rw-r--r-- | udelay.h | 23 |
1 files changed, 19 insertions, 4 deletions
@@ -1,4 +1,4 @@ -/* $Id: udelay.h,v 1.3 2001/03/12 13:44:58 reinelt Exp $ +/* $Id: udelay.h,v 1.4 2002/04/29 11:00:28 reinelt Exp $ * * short delays * @@ -20,6 +20,11 @@ * * * $Log: udelay.h,v $ + * Revision 1.4 2002/04/29 11:00:28 reinelt + * + * added Toshiba T6963 driver + * added ndelay() with nanosecond resolution + * * Revision 1.3 2001/03/12 13:44:58 reinelt * * new udelay() using Time Stamp Counters @@ -41,17 +46,27 @@ #ifndef _UDELAY_H_ #define _UDELAY_H_ +/* stolen from linux/asm-i386/processor.h */ +/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */ +static inline void rep_nop(void) +{ + __asm__ __volatile__("rep;nop"); +} + + #ifdef USE_OLD_UDELAY extern unsigned long loops_per_usec; - -void udelay (unsigned long usec); void udelay_calibrate (void); #else void udelay_init (void); -void udelay (unsigned long usec); #endif + +void ndelay (unsigned long nsec); + +#define udelay(usec) ndelay(usec*1000) + #endif |