watchdog: lantiq: add get_timeleft callback (c99d9df1) · Commits · 戴 / test

drivers/watchdog/lantiq_wdt.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -50,6 +50,7 @@
		#define LTQ_WDT_CR_MAX_TIMEOUT ((1 << 16) - 1) /* The reload field is 16 bit */
		#define LTQ_WDT_SR 0x8 /* watchdog status register */
		#define LTQ_WDT_SR_EN BIT(31) /* Enable */
		#define LTQ_WDT_SR_VALUE_MASK GENMASK(15, 0) /* Timer value */

		#define LTQ_WDT_DIVIDER 0x40000

		@@ -139,11 +140,21 @@ static int ltq_wdt_ping(struct watchdog_device *wdt)
		return 0;
		}

		static unsigned int ltq_wdt_get_timeleft(struct watchdog_device *wdt)
		{
		struct ltq_wdt_priv *priv = ltq_wdt_get_priv(wdt);
		u64 timeout;

		timeout = ltq_wdt_r32(priv, LTQ_WDT_SR) & LTQ_WDT_SR_VALUE_MASK;
		return do_div(timeout, priv->clk_rate);
		}

		static const struct watchdog_ops ltq_wdt_ops = {
		.owner = THIS_MODULE,
		.start = ltq_wdt_start,
		.stop = ltq_wdt_stop,
		.ping = ltq_wdt_ping,
		.get_timeleft = ltq_wdt_get_timeleft,
		};

		static int ltq_wdt_xrx_bootstatus_get(struct device *dev)