watchdog: wdt-uclass.c: add wdt_stop_all() helper
Since the watchdog_dev member of struct global_data is going away in
favor of the wdt-uclass handling all watchdog devices, prepare for
that by adding a helper to call wdt_stop() on all known devices.
If an error is encountered, still do wdt_stop() on remaining devices,
but remember and return the first error seen.
Initially, this will only be used in one single
place (board/alliedtelesis/x530/x530.c).
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
diff --git a/include/wdt.h b/include/wdt.h
index bc242c2..baaa9db 100644
--- a/include/wdt.h
+++ b/include/wdt.h
@@ -38,6 +38,14 @@
int wdt_stop(struct udevice *dev);
/*
+ * Stop all registered watchdog devices.
+ *
+ * @return: 0 if ok, first error encountered otherwise (but wdt_stop()
+ * is still called on following devices)
+ */
+int wdt_stop_all(void);
+
+/*
* Reset the timer, typically restoring the counter to
* the value configured by start()
*