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| author | Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> | 2008-12-09 11:32:46 +0900 |
|---|---|---|
| committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2008-12-10 23:11:36 +0900 |
| commit | d8bbc51c7ba9b737a20984333d19fe28a3526431 (patch) | |
| tree | 6987fa8b4d58600f76537492823bff54ba58ed96 | |
| parent | a319f1496210117b73198e3d889ffffaf6825d00 (diff) | |
| download | u-boot-imx-d8bbc51c7ba9b737a20984333d19fe28a3526431.zip u-boot-imx-d8bbc51c7ba9b737a20984333d19fe28a3526431.tar.gz u-boot-imx-d8bbc51c7ba9b737a20984333d19fe28a3526431.tar.bz2 | |
sh: Update sh2/sh2a timer
Renesas SH2/SH2A timer broken.
This patch fix timer function.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
| -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; } |