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dm: timer: Support 64-bit counter

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There are timers with a 64-bit counter value but current timer
uclass driver assumes a 32-bit one. Modify timer_get_count()
to ask timer driver to always return a 64-bit counter value,
and provide an inline helper function timer_conv_64() to handle
the 32-bit/64-bit conversion automatically.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng
2015-11-24 13:31:17 -07:00
committed by Simon Glass
parent f838f12452
commit 9ca07ebbac
5 changed files with 32 additions and 12 deletions
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9
lib/time.c
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@ -69,9 +69,9 @@ ulong notrace get_tbclk(void)
return timer_get_rate(gd->timer);
}
unsigned long notrace timer_read_counter(void)
uint64_t notrace get_ticks(void)
{
unsigned long count;
u64 count;
int ret;
ret = dm_timer_init();
@ -84,7 +84,8 @@ unsigned long notrace timer_read_counter(void)
return count;
}
#endif /* CONFIG_TIMER */
#else /* !CONFIG_TIMER */
uint64_t __weak notrace get_ticks(void)
{
@ -97,6 +98,8 @@ uint64_t __weak notrace get_ticks(void)
return ((uint64_t)gd->timebase_h << 32) | gd->timebase_l;
}
#endif /* CONFIG_TIMER */
/* Returns time in milliseconds */
static uint64_t notrace tick_to_time(uint64_t tick)
{