Messages in this thread | | | Subject | Re: [PATCH v3] watchdog: sp805: add restart handler | From | Guenter Roeck <> | Date | Fri, 4 May 2018 06:11:38 -0700 |
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On 05/03/2018 11:05 PM, Jongsung Kim wrote: > Add restart handler for SP805 watchdog so that the driver can be > used to reboot the system. > > Signed-off-by: Jongsung Kim <neidhard.kim@lge.com> > Cc: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> ---
For future patches: change log goes here, please.
Thanks, Guenter
> drivers/watchdog/sp805_wdt.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c > index 03805bc..9849db0 100644 > --- a/drivers/watchdog/sp805_wdt.c > +++ b/drivers/watchdog/sp805_wdt.c > @@ -121,6 +121,18 @@ static unsigned int wdt_timeleft(struct watchdog_device *wdd) > return div_u64(load, rate); > } > > +static int > +wdt_restart(struct watchdog_device *wdd, unsigned long mode, void *cmd) > +{ > + struct sp805_wdt *wdt = watchdog_get_drvdata(wdd); > + > + writel_relaxed(0, wdt->base + WDTCONTROL); > + writel_relaxed(0, wdt->base + WDTLOAD); > + writel_relaxed(INT_ENABLE | RESET_ENABLE, wdt->base + WDTCONTROL); > + > + return 0; > +} > + > static int wdt_config(struct watchdog_device *wdd, bool ping) > { > struct sp805_wdt *wdt = watchdog_get_drvdata(wdd); > @@ -197,6 +209,7 @@ static const struct watchdog_ops wdt_ops = { > .ping = wdt_ping, > .set_timeout = wdt_setload, > .get_timeleft = wdt_timeleft, > + .restart = wdt_restart, > }; > > static int > @@ -230,6 +243,7 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id) > spin_lock_init(&wdt->lock); > watchdog_set_nowayout(&wdt->wdd, nowayout); > watchdog_set_drvdata(&wdt->wdd, wdt); > + watchdog_set_restart_priority(&wdt->wdd, 128); > wdt_setload(&wdt->wdd, DEFAULT_TIMEOUT); > > ret = watchdog_register_device(&wdt->wdd); >
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