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hw/timer/digic-timer.c: Switch to transaction-based ptimer API

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Switch the digic-timer.c code away from bottom-half based ptimers to
the new transaction-based ptimer API.  This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-11-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2019-10-08 18:17:29 +01:00
parent 19c12fe93a
commit 30e22c8733
1 changed files with 14 additions and 2 deletions
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16
hw/timer/digic-timer.c
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@ -29,7 +29,6 @@
#include "qemu/osdep.h"
#include "hw/sysbus.h"
#include "hw/ptimer.h"
#include "qemu/main-loop.h"
#include "qemu/module.h"
#include "qemu/log.h"
@ -52,7 +51,9 @@ static void digic_timer_reset(DeviceState *dev)
{
DigicTimerState *s = DIGIC_TIMER(dev);
ptimer_transaction_begin(s->ptimer);
ptimer_stop(s->ptimer);
ptimer_transaction_commit(s->ptimer);
s->control = 0;
s->relvalue = 0;
}
@ -93,16 +94,20 @@ static void digic_timer_write(void *opaque, hwaddr offset,
break;
}
ptimer_transaction_begin(s->ptimer);
if (value & DIGIC_TIMER_CONTROL_EN) {
ptimer_run(s->ptimer, 0);
}
s->control = (uint32_t)value;
ptimer_transaction_commit(s->ptimer);
break;
case DIGIC_TIMER_RELVALUE:
s->relvalue = extract32(value, 0, 16);
ptimer_transaction_begin(s->ptimer);
ptimer_set_limit(s->ptimer, s->relvalue, 1);
ptimer_transaction_commit(s->ptimer);
break;
case DIGIC_TIMER_VALUE:
@ -125,17 +130,24 @@ static const MemoryRegionOps digic_timer_ops = {
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void digic_timer_tick(void *opaque)
{
/* Nothing to do on timer rollover */
}
static void digic_timer_init(Object *obj)
{
DigicTimerState *s = DIGIC_TIMER(obj);
s->ptimer = ptimer_init_with_bh(NULL, PTIMER_POLICY_DEFAULT);
s->ptimer = ptimer_init(digic_timer_tick, NULL, PTIMER_POLICY_DEFAULT);
/*
* FIXME: there is no documentation on Digic timer
* frequency setup so let it always run at 1 MHz
*/
ptimer_transaction_begin(s->ptimer);
ptimer_set_freq(s->ptimer, 1 * 1000 * 1000);
ptimer_transaction_commit(s->ptimer);
memory_region_init_io(&s->iomem, OBJECT(s), &digic_timer_ops, s,
TYPE_DIGIC_TIMER, 0x100);