Commit 1aea5228 authored by Linus Walleij's avatar Linus Walleij Committed by Wim Van Sebroeck
Browse files

watchdog: ixp4xx: Implement restart 



Implement watchdog restart in the IXP4xx watchdog timer.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220206230028.476659-1-linus.walleij@linaro.org


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent 7a6b3d8a

drivers/watchdog/ixp4xx_wdt.c

+14 −0
Original line number Diff line number Diff line
@@ -84,10 +84,24 @@ static int ixp4xx_wdt_set_timeout(struct watchdog_device *wdd, 
	return 0;

}



static int ixp4xx_wdt_restart(struct watchdog_device *wdd,

                              unsigned long action, void *data)

{

	struct ixp4xx_wdt *iwdt = to_ixp4xx_wdt(wdd);



	__raw_writel(IXP4XX_WDT_KEY, iwdt->base + IXP4XX_OSWK_OFFSET);

	__raw_writel(0, iwdt->base + IXP4XX_OSWT_OFFSET);

	__raw_writel(IXP4XX_WDT_COUNT_ENABLE | IXP4XX_WDT_RESET_ENABLE,

		     iwdt->base + IXP4XX_OSWE_OFFSET);



	return 0;

}



static const struct watchdog_ops ixp4xx_wdt_ops = {

	.start = ixp4xx_wdt_start,

	.stop = ixp4xx_wdt_stop,

	.set_timeout = ixp4xx_wdt_set_timeout,

	.restart = ixp4xx_wdt_restart,

	.owner = THIS_MODULE,

};