diff options
Diffstat (limited to 'lib_sh/time_sh2.c')
| -rw-r--r-- | lib_sh/time_sh2.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/lib_sh/time_sh2.c b/lib_sh/time_sh2.c index fcbb921..4f893c8 100644 --- a/lib_sh/time_sh2.c +++ b/lib_sh/time_sh2.c @@ -65,8 +65,8 @@ unsigned long long get_ticks(void) return cmt0_timer; } -static vu_long cmcnt; -ulong get_timer(ulong base) +static vu_long cmcnt = 0; +static unsigned long get_usec (void) { ulong data = readw(CMCNT_0); @@ -81,7 +81,13 @@ ulong get_timer(ulong base) cmt0_timer += cmcnt; cmcnt = data; - return cmt0_timer - base; + return cmt0_timer; +} + +/* return msec */ +ulong get_timer(ulong base) +{ + return (get_usec()/1000) - base; } void set_timer(ulong t) @@ -99,9 +105,9 @@ void reset_timer(void) void udelay(unsigned long usec) { - unsigned int start = get_timer(0); + unsigned long end = get_usec() + usec; - while (get_timer((ulong) start) < (usec * (CONFIG_SYS_HZ / 1000000))) + while (get_usec() < end) continue; } |