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| author | Wolfgang Denk <wd@denx.de> | 2008-06-03 00:19:57 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-06-03 00:19:57 +0200 |
| commit | 7a68389a231ac061ba2ffd628f86e15ed0545a7b (patch) | |
| tree | 723fd35290b988810be6d417c21fa1949f25aae8 /cpu/at32ap/interrupts.c | |
| parent | 7feb4d38ff1fdf8877f39447001ff9f6e93fa6bc (diff) | |
| parent | a8092c021d27f27f4b323b7d49979ca01b3fc19d (diff) | |
| download | u-boot-imx-7a68389a231ac061ba2ffd628f86e15ed0545a7b.zip u-boot-imx-7a68389a231ac061ba2ffd628f86e15ed0545a7b.tar.gz u-boot-imx-7a68389a231ac061ba2ffd628f86e15ed0545a7b.tar.bz2 | |
Merge remote branch 'u-boot-avr32/master'
Diffstat (limited to 'cpu/at32ap/interrupts.c')
| -rw-r--r-- | cpu/at32ap/interrupts.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/cpu/at32ap/interrupts.c b/cpu/at32ap/interrupts.c index bef1f30..160838e 100644 --- a/cpu/at32ap/interrupts.c +++ b/cpu/at32ap/interrupts.c @@ -98,18 +98,16 @@ void set_timer(unsigned long t) */ void udelay(unsigned long usec) { - unsigned long now, end; + unsigned long cycles; + unsigned long base; + unsigned long now; - now = sysreg_read(COUNT); + base = sysreg_read(COUNT); + cycles = ((usec * (get_tbclk() / 10000)) + 50) / 100; - end = ((usec * (get_tbclk() / 10000)) + 50) / 100; - end += now; - - while (now > end) - now = sysreg_read(COUNT); - - while (now < end) + do { now = sysreg_read(COUNT); + } while ((now - base) < cycles); } static int set_interrupt_handler(unsigned int nr, void (*handler)(void), |