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watchdog: wdt-uclass.c: keep track of each device's running state

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As a step towards handling all DM watchdogs in watchdog_reset(), use a
per-device flag to keep track of whether the device has been started
instead of a bit in gd->flags.

We will still need that bit to know whether we are past
initr_watchdog() and hence have populated gd->watchdog_dev -
incidentally, that is how it was used prior to commit 9c44ff1c5f.

Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
This commit is contained in:
Rasmus Villemoes 2021-08-19 11:56:59 +02:00 committed by Stefan Roese
parent 3eaf6e2e42
commit f1b112afbb
1 changed files with 16 additions and 4 deletions
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20
drivers/watchdog/wdt-uclass.c
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@ -33,6 +33,8 @@ struct wdt_priv {
* ->reset().
*/
ulong next_reset;
/* Whether watchdog_start() has been called on the device. */
bool running;
};
static void init_watchdog_dev(struct udevice *dev)
@ -74,6 +76,7 @@ int initr_watchdog(void)
}
init_watchdog_dev(gd->watchdog_dev);
gd->flags |= GD_FLG_WDT_READY;
return 0;
}
@ -86,8 +89,11 @@ int wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)
return -ENOSYS;
ret = ops->start(dev, timeout_ms, flags);
if (ret == 0)
gd->flags |= GD_FLG_WDT_READY;
if (ret == 0) {
struct wdt_priv *priv = dev_get_uclass_priv(dev);
priv->running = true;
}
return ret;
}
@ -101,8 +107,11 @@ int wdt_stop(struct udevice *dev)
return -ENOSYS;
ret = ops->stop(dev);
if (ret == 0)
gd->flags &= ~GD_FLG_WDT_READY;
if (ret == 0) {
struct wdt_priv *priv = dev_get_uclass_priv(dev);
priv->running = false;
}
return ret;
}
@ -156,6 +165,9 @@ void watchdog_reset(void)
dev = gd->watchdog_dev;
priv = dev_get_uclass_priv(dev);
if (!priv->running)
return;
/* Do not reset the watchdog too often */
now = get_timer(0);
if (time_after_eq(now, priv->next_reset)) {