Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6c5c0d48 authored by Jongsung Kim's avatar Jongsung Kim Committed by Wim Van Sebroeck
Browse files

watchdog: sp805: add restart handler 



Add restart handler for SP805 watchdog so that the driver can be
used to reboot the system.

Signed-off-by: default avatarJongsung Kim <neidhard.kim@lge.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 665f9442

drivers/watchdog/sp805_wdt.c

+14 −0
Original line number Diff line number Diff line
@@ -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);