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hw/watchdog/cmsdk-apb-watchdog: Convert to use Clock input

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Switch the CMSDK APB watchdog device over to using its Clock input;
the wdogclk_frq property is now ignored.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210128114145.20536-21-peter.maydell@linaro.org
Message-id: 20210121190622.22000-21-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-01-28 11:41:40 +00:00
parent 7208aafb6c
commit 4c4599fec9
1 changed files with 14 additions and 4 deletions
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18
hw/watchdog/cmsdk-apb-watchdog.c
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@ -310,6 +310,15 @@ static void cmsdk_apb_watchdog_reset(DeviceState *dev)
ptimer_transaction_commit(s->timer);
}
static void cmsdk_apb_watchdog_clk_update(void *opaque)
{
CMSDKAPBWatchdog *s = CMSDK_APB_WATCHDOG(opaque);
ptimer_transaction_begin(s->timer);
ptimer_set_period_from_clock(s->timer, s->wdogclk, 1);
ptimer_transaction_commit(s->timer);
}
static void cmsdk_apb_watchdog_init(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
@ -319,7 +328,8 @@ static void cmsdk_apb_watchdog_init(Object *obj)
s, "cmsdk-apb-watchdog", 0x1000);
sysbus_init_mmio(sbd, &s->iomem);
sysbus_init_irq(sbd, &s->wdogint);
s->wdogclk = qdev_init_clock_in(DEVICE(s), "WDOGCLK", NULL, NULL);
s->wdogclk = qdev_init_clock_in(DEVICE(s), "WDOGCLK",
cmsdk_apb_watchdog_clk_update, s);
s->is_luminary = false;
s->id = cmsdk_apb_watchdog_id;
@ -329,9 +339,9 @@ static void cmsdk_apb_watchdog_realize(DeviceState *dev, Error **errp)
{
CMSDKAPBWatchdog *s = CMSDK_APB_WATCHDOG(dev);
if (s->wdogclk_frq == 0) {
if (!clock_has_source(s->wdogclk)) {
error_setg(errp,
"CMSDK APB watchdog: wdogclk-frq property must be set");
"CMSDK APB watchdog: WDOGCLK clock must be connected");
return;
}
@ -342,7 +352,7 @@ static void cmsdk_apb_watchdog_realize(DeviceState *dev, Error **errp)
PTIMER_POLICY_NO_COUNTER_ROUND_DOWN);
ptimer_transaction_begin(s->timer);
ptimer_set_freq(s->timer, s->wdogclk_frq);
ptimer_set_period_from_clock(s->timer, s->wdogclk, 1);
ptimer_transaction_commit(s->timer);
}