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path: root/drivers/watchdog
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Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/ftwdt010_wdt.c23
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/watchdog/ftwdt010_wdt.c b/drivers/watchdog/ftwdt010_wdt.c
index 21dcc7765688..0a5bbfd2823f 100644
--- a/drivers/watchdog/ftwdt010_wdt.c
+++ b/drivers/watchdog/ftwdt010_wdt.c
@@ -47,21 +47,28 @@ struct ftwdt010_wdt *to_ftwdt010_wdt(struct watchdog_device *wdd)
return container_of(wdd, struct ftwdt010_wdt, wdd);
}
-static int ftwdt010_wdt_start(struct watchdog_device *wdd)
+static void ftwdt010_enable(struct ftwdt010_wdt *gwdt,
+ unsigned int timeout,
+ bool need_irq)
{
- struct ftwdt010_wdt *gwdt = to_ftwdt010_wdt(wdd);
u32 enable;
- writel(wdd->timeout * WDT_CLOCK, gwdt->base + FTWDT010_WDLOAD);
+ writel(timeout * WDT_CLOCK, gwdt->base + FTWDT010_WDLOAD);
writel(WDRESTART_MAGIC, gwdt->base + FTWDT010_WDRESTART);
/* set clock before enabling */
enable = WDCR_CLOCK_5MHZ | WDCR_SYS_RST;
writel(enable, gwdt->base + FTWDT010_WDCR);
- if (gwdt->has_irq)
+ if (need_irq)
enable |= WDCR_WDINTR;
enable |= WDCR_ENABLE;
writel(enable, gwdt->base + FTWDT010_WDCR);
+}
+static int ftwdt010_wdt_start(struct watchdog_device *wdd)
+{
+ struct ftwdt010_wdt *gwdt = to_ftwdt010_wdt(wdd);
+
+ ftwdt010_enable(gwdt, wdd->timeout, gwdt->has_irq);
return 0;
}
@@ -93,6 +100,13 @@ static int ftwdt010_wdt_set_timeout(struct watchdog_device *wdd,
return 0;
}
+static int ftwdt010_wdt_restart(struct watchdog_device *wdd,
+ unsigned long action, void *data)
+{
+ ftwdt010_enable(to_ftwdt010_wdt(wdd), 0, false);
+ return 0;
+}
+
static irqreturn_t ftwdt010_wdt_interrupt(int irq, void *data)
{
struct ftwdt010_wdt *gwdt = data;
@@ -107,6 +121,7 @@ static const struct watchdog_ops ftwdt010_wdt_ops = {
.stop = ftwdt010_wdt_stop,
.ping = ftwdt010_wdt_ping,
.set_timeout = ftwdt010_wdt_set_timeout,
+ .restart = ftwdt010_wdt_restart,
.owner = THIS_MODULE,
};