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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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drivers/timer/sandbox_timer.c
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@@ -18,7 +18,7 @@ void sandbox_timer_add_offset(unsigned long offset)
sandbox_timer_offset += offset;
}
static int sandbox_timer_get_count(struct udevice *dev, unsigned long *count)
static int sandbox_timer_get_count(struct udevice *dev, u64 *count)
{
*count = os_get_nsec() / 1000 + sandbox_timer_offset * 1000;