watchdog: move initr_watchdog() to wdt-uclass.c

This function is a bit large for an inline function, and for U-Boot
proper, it is called via a function pointer anyway (in board_r.c), so
cannot be inlined.

It will shortly set a global variable to be used by the
watchdog_reset() function in wdt-uclass.c, so this also allows making
that variable local to wdt-uclass.c.

The WATCHDOG_TIMEOUT_SECS define is not used elsewhere.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Stefan Roese <sr@denx.de>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/watchdog/wdt-uclass.c b/drivers/watchdog/wdt-uclass.c
index d9e4dc7cb8..c96a596f08 100644
--- a/drivers/watchdog/wdt-uclass.c
+++ b/drivers/watchdog/wdt-uclass.c
@@ -14,6 +14,39 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define WATCHDOG_TIMEOUT_SECS	(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000)
+
+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) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
+		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;
+}
+
 int wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)
 {
 	const struct wdt_ops *ops = device_get_ops(dev);