Merge branch 'master' of git://git.denx.de/u-boot-arm

[u-boot] / arch / arm / cpu / arm1136 / omap24xx / timer.c

diff --git a/arch/arm/cpu/arm1136/omap24xx/timer.c b/arch/arm/cpu/arm1136/omap24xx/timer.c
index 67547490fdaaad0e5e7f4420471aed4af174af94..53015cb77dc954016d6bbbec541d4d9c54d8cd02 100644 (file)
--- a/arch/arm/cpu/arm1136/omap24xx/timer.c
+++ b/arch/arm/cpu/arm1136/omap24xx/timer.c
@@ -39,8 +39,7 @@
 /* macro to read the 32 bit timer */
 #define READ_TIMER (*((volatile ulong *)(CONFIG_SYS_TIMERBASE+TCRR)))
 
-static ulong timestamp;
-static ulong lastinc;
+DECLARE_GLOBAL_DATA_PTR;
 
 int timer_init (void)
 {
@@ -51,68 +50,59 @@ int timer_init (void)
        val = (CONFIG_SYS_PTV << 2) | BIT5 | BIT1 | BIT0;               /* mask to enable timer*/
        *((int32_t *) (CONFIG_SYS_TIMERBASE + TCLR)) = val;     /* start timer */
 
-       reset_timer_masked(); /* init the timestamp and lastinc value */
+       /* reset time */
+       gd->arch.lastinc = READ_TIMER;  /* capture current incrementer value */
+       gd->arch.tbl = 0;               /* start "advancing" time stamp */
 
        return(0);
 }
 /*
  * timer without interrupts
  */
-void reset_timer (void)
-{
-       reset_timer_masked ();
-}
-
 ulong get_timer (ulong base)
 {
        return get_timer_masked () - base;
 }
 
-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 */
-               reset_timer_masked ();  /* reset "advancing" timestamp to 0, set lastinc value */
-       else
-               tmo     += tmp;                         /* else, set advancing stamp wake up time */
+       if ((tmo + tmp + 1) < tmp) {    /* if setting this forward will roll */
+                                       /* time stamp, then reset time */
+               gd->arch.lastinc = READ_TIMER;  /* capture incrementer value */
+               gd->arch.tbl = 0;                       /* start time stamp */
+       } else {
+               tmo     += tmp;         /* else, set advancing stamp wake up time */
+       }
        while (get_timer_masked () < tmo)/* loop till event */
                /*NOP*/;
 }
 
-void reset_timer_masked (void)
-{
-       /* reset time */
-       lastinc = READ_TIMER;           /* capture current incrementer value time */
-       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) */
-               timestamp += (now - lastinc); /* move stamp fordward with absoulte diff ticks */
-       else                                            /* we have rollover of incrementer */
-               timestamp += (0xFFFFFFFF - lastinc) + now;
-       lastinc = now;
-       return timestamp;
+       if (now >= gd->arch.lastinc) {          /* normal mode (non roll) */
+               /* move stamp fordward with absoulte diff ticks */
+               gd->arch.tbl += (now - gd->arch.lastinc);
+       } else {
+               /* we have rollover of incrementer */
+               gd->arch.tbl += (0xFFFFFFFF - gd->arch.lastinc) + now;
+       }
+       gd->arch.lastinc = now;
+       return gd->arch.tbl;
 }
 
 /* waits specified delay value and resets timestamp */