watchdog: renesas_wdt: support handover from bootloader (962085a2) · Commits · 戴 / test

drivers/watchdog/renesas_wdt.c

+10 −2

Original line number	Diff line number	Diff line
		@@ -194,6 +194,7 @@ static int rwdt_probe(struct platform_device *pdev)
		struct clk *clk;
		unsigned long clks_per_sec;
		int ret, i;
		u8 csra;

		if (rwdt_blacklisted(dev))
		return -ENODEV;
		@@ -213,8 +214,8 @@ static int rwdt_probe(struct platform_device *pdev)
		pm_runtime_enable(dev);
		pm_runtime_get_sync(dev);
		priv->clk_rate = clk_get_rate(clk);
		priv->wdev.bootstatus = (readb_relaxed(priv->base + RWTCSRA) &
		RWTCSRA_WOVF) ? WDIOF_CARDRESET : 0;
		csra = readb_relaxed(priv->base + RWTCSRA);
		priv->wdev.bootstatus = csra & RWTCSRA_WOVF ? WDIOF_CARDRESET : 0;
		pm_runtime_put(dev);

		if (!priv->clk_rate) {
		@@ -252,6 +253,13 @@ static int rwdt_probe(struct platform_device *pdev)
		/* This overrides the default timeout only if DT configuration was found */
		watchdog_init_timeout(&priv->wdev, 0, dev);

		/* Check if FW enabled the watchdog */
		if (csra & RWTCSRA_TME) {
		/* Ensure properly initialized dividers */
		rwdt_start(&priv->wdev);
		set_bit(WDOG_HW_RUNNING, &priv->wdev.status);
		}

		ret = watchdog_register_device(&priv->wdev);
		if (ret < 0)
		goto out_pm_disable;