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hw/ptimer: Add "no immediate trigger" policy

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Performing trigger on setting (or starting to run with) counter = 0 could
be a wrong behaviour for some of the timers, provide "no immediate trigger"
policy to maintain correct behaviour for such timers.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Message-id: 72c0319cf2ec599f22397b7da280c06c34dc40dd.1475421224.git.digetx@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Dmitry Osipenko 2016-10-24 16:26:51 +01:00 • committed by Peter Maydell
parent 2e74583b29
commit 22471b8a0f
2 changed files with 20 additions and 4 deletions
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4
include/hw/ptimer.h
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@ -43,6 +43,10 @@
* re-trigger every period. */
#define PTIMER_POLICY_CONTINUOUS_TRIGGER (1 << 1)
/* Starting to run with/setting counter to "0" won't trigger immediately,
* but after a one period for both oneshot and periodic modes. */
#define PTIMER_POLICY_NO_IMMEDIATE_TRIGGER (1 << 2)
/* ptimer.c */
typedef struct ptimer_state ptimer_state;
typedef void (*ptimer_cb)(void *opaque);