diff options
Diffstat (limited to 'arch/arm/cpu/arm1136/omap24xx/timer.c')
| -rw-r--r-- | arch/arm/cpu/arm1136/omap24xx/timer.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/arm/cpu/arm1136/omap24xx/timer.c b/arch/arm/cpu/arm1136/omap24xx/timer.c index 67547490f..68fe1b220 100644 --- a/arch/arm/cpu/arm1136/omap24xx/timer.c +++ b/arch/arm/cpu/arm1136/omap24xx/timer.c @@ -73,25 +73,25 @@ void set_timer (ulong t) timestamp = t; } -/* delay x useconds AND perserve advance timstamp value */ +/* delay x useconds AND preserve advance timestamp value */ void __udelay (unsigned long usec) { ulong tmo, tmp; - if (usec >= 1000) { /* if "big" number, spread normalization to seconds */ - tmo = usec / 1000; /* start to normalize for usec to ticks per sec */ - tmo *= CONFIG_SYS_HZ; /* find number of "ticks" to wait to achieve target */ - tmo /= 1000; /* finish normalize. */ - } else { /* else small number, don't kill it prior to HZ multiply */ + if (usec >= 1000) { /* if "big" number, spread normalization to seconds */ + tmo = usec / 1000; /* start to normalize for usec to ticks per sec */ + tmo *= CONFIG_SYS_HZ; /* find number of "ticks" to wait to achieve target */ + tmo /= 1000; /* finish normalize. */ + } else { /* else small number, don't kill it prior to HZ multiply */ tmo = usec * CONFIG_SYS_HZ; tmo /= (1000*1000); } tmp = get_timer (0); /* get current timestamp */ - if ( (tmo + tmp + 1) < tmp )/* if setting this forward will roll time stamp */ + if ( (tmo + tmp + 1) < tmp ) /* if setting this forward will roll time stamp */ reset_timer_masked (); /* reset "advancing" timestamp to 0, set lastinc value */ else - tmo += tmp; /* else, set advancing stamp wake up time */ + tmo += tmp; /* else, set advancing stamp wake up time */ while (get_timer_masked () < tmo)/* loop till event */ /*NOP*/; } @@ -100,16 +100,16 @@ void reset_timer_masked (void) { /* reset time */ lastinc = READ_TIMER; /* capture current incrementer value time */ - timestamp = 0; /* start "advancing" time stamp from 0 */ + timestamp = 0; /* start "advancing" time stamp from 0 */ } ulong get_timer_masked (void) { ulong now = READ_TIMER; /* current tick value */ - if (now >= lastinc) /* normal mode (non roll) */ + if (now >= lastinc) /* normal mode (non roll) */ timestamp += (now - lastinc); /* move stamp fordward with absoulte diff ticks */ - else /* we have rollover of incrementer */ + else /* we have rollover of incrementer */ timestamp += (0xFFFFFFFF - lastinc) + now; lastinc = now; return timestamp; |