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hw/ptimer: Add "no immediate reload" policy

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Immediate counter re-load on setting (or on starting to run with)
counter = 0 is a wrong behaviour for some of the timers. Add "no
immediate reload" policy that provides correct behaviour for such timers.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Message-id: bf9385cd2550ca451d564fa46007688cee3f3d9d.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 16:26:52 +01:00 • committed by Peter Maydell
parent 516deb421a
commit 3f6e6a13c1
2 changed files with 30 additions and 5 deletions
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4
include/hw/ptimer.h
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@ -47,6 +47,10 @@
* but after a one period for both oneshot and periodic modes. */
#define PTIMER_POLICY_NO_IMMEDIATE_TRIGGER (1 << 2)
/* Starting to run with/setting counter to "0" won't re-load counter
* immediately, but after a one period. */
#define PTIMER_POLICY_NO_IMMEDIATE_RELOAD (1 << 3)
/* ptimer.c */
typedef struct ptimer_state ptimer_state;
typedef void (*ptimer_cb)(void *opaque);