Return the remaining time from the hardware control register. Signed-off-by: Simon Arlott <simon@xxxxxxxxxxx> --- drivers/watchdog/bcm63xx_wdt.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/watchdog/bcm63xx_wdt.c b/drivers/watchdog/bcm63xx_wdt.c index 0a19731..ab4a794 100644 --- a/drivers/watchdog/bcm63xx_wdt.c +++ b/drivers/watchdog/bcm63xx_wdt.c @@ -78,6 +78,19 @@ static int bcm63xx_wdt_stop(struct watchdog_device *wdd) return 0; } +static unsigned int bcm63xx_wdt_get_timeleft(struct watchdog_device *wdd) +{ + struct bcm63xx_wdt_hw *hw = to_wdt_hw(wdd); + unsigned long flags; + u32 val; + + raw_spin_lock_irqsave(&hw->lock, flags); + val = __raw_readl(hw->regs + WDT_CTL_REG); + val /= hw->clock_hz; + raw_spin_unlock_irqrestore(&hw->lock, flags); + return val; +} + static int bcm63xx_wdt_set_timeout(struct watchdog_device *wdd, unsigned int timeout) { @@ -132,6 +145,7 @@ static struct watchdog_ops bcm63xx_wdt_ops = { .owner = THIS_MODULE, .start = bcm63xx_wdt_start, .stop = bcm63xx_wdt_stop, + .get_timeleft = bcm63xx_wdt_get_timeleft, .set_timeout = bcm63xx_wdt_set_timeout, }; @@ -256,6 +270,7 @@ module_platform_driver(bcm63xx_wdt_driver); MODULE_AUTHOR("Miguel Gaio <miguel.gaio@xxxxxxxxx>"); MODULE_AUTHOR("Florian Fainelli <florian@xxxxxxxxxxx>"); +MODULE_AUTHOR("Simon Arlott"); MODULE_DESCRIPTION("Driver for the Broadcom BCM63xx SoC watchdog"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:bcm63xx-wdt"); -- 2.1.4 -- Simon Arlott -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html