X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fwdt.h;h=aa77d3e9b40368af889b67e81fa411d9c66d42e4;hb=f5e73a34eddea4fb7c5e3d984b86f395996a64cd;hp=e9a7c5355a64e0fea55cdecfffb895d5a5615d6d;hpb=e8f80a5a58c9b506453cc0780687e8ed457d30a6;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/wdt.h b/include/wdt.h
index e9a7c53..aa77d3e 100644
--- a/include/wdt.h
+++ b/include/wdt.h
@@ -6,6 +6,9 @@
 #ifndef _WDT_H_
 #define _WDT_H_
 
+#include <dm.h>
+#include <dm/read.h>
+
 /*
  * Implement a simple watchdog uclass. Watchdog is basically a timer that
  * is used to detect or recover from malfunction. During normal operation
@@ -103,4 +106,42 @@ struct wdt_ops {
 	int (*expire_now)(struct udevice *dev, ulong flags);
 };
 
+#if defined(CONFIG_WDT)
+#ifndef CONFIG_WATCHDOG_TIMEOUT_MSECS
+#define CONFIG_WATCHDOG_TIMEOUT_MSECS	(60 * 1000)
+#endif
+#define WATCHDOG_TIMEOUT_SECS	(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000)
+
+static inline int initr_watchdog(void)
+{
+	u32 timeout = WATCHDOG_TIMEOUT_SECS;
+
+	/*
+	 * Init watchdog: This will call the probe function of the
+	 * watchdog driver, enabling the use of the device
+	 */
+	if (uclass_get_device_by_seq(UCLASS_WDT, 0,
+				     (struct udevice **)&gd->watchdog_dev)) {
+		debug("WDT:   Not found by seq!\n");
+		if (uclass_get_device(UCLASS_WDT, 0,
+				      (struct udevice **)&gd->watchdog_dev)) {
+			printf("WDT:   Not found!\n");
+			return 0;
+		}
+	}
+
+	if (CONFIG_IS_ENABLED(OF_CONTROL)) {
+		timeout = dev_read_u32_default(gd->watchdog_dev, "timeout-sec",
+					       WATCHDOG_TIMEOUT_SECS);
+	}
+
+	wdt_start(gd->watchdog_dev, timeout * 1000, 0);
+	gd->flags |= GD_FLG_WDT_READY;
+	printf("WDT:   Started with%s servicing (%ds timeout)\n",
+	       IS_ENABLED(CONFIG_WATCHDOG) ? "" : "out", timeout);
+
+	return 0;
+}
+#endif
+
 #endif  /* _WDT_H_ */