1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_pretimeout.h b/drivers/watchdog/watchdog_pretimeout.h
new file mode 100644
index 000000000000..a5a32b39c56d
--- /dev/null
+++ b/drivers/watchdog/watchdog_pretimeout.h
@@ -0,0 +1,60 @@
+#ifndef __WATCHDOG_PRETIMEOUT_H
+#define __WATCHDOG_PRETIMEOUT_H
+
+#define WATCHDOG_GOV_NAME_MAXLEN	20
+
+struct watchdog_device;
+
+struct watchdog_governor {
+	const char	name[WATCHDOG_GOV_NAME_MAXLEN];
+	void		(*pretimeout)(struct watchdog_device *wdd);
+};
+
+#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_GOV)
+/* Interfaces to watchdog pretimeout governors */
+int watchdog_register_governor(struct watchdog_governor *gov);
+void watchdog_unregister_governor(struct watchdog_governor *gov);
+
+/* Interfaces to watchdog_dev.c */
+int watchdog_register_pretimeout(struct watchdog_device *wdd);
+void watchdog_unregister_pretimeout(struct watchdog_device *wdd);
+int watchdog_pretimeout_available_governors_get(char *buf);
+int watchdog_pretimeout_governor_get(struct watchdog_device *wdd, char *buf);
+int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
+				     const char *buf);
+
+#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP)
+#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV		"noop"
+#elif IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC)
+#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV		"panic"
+#endif
+
+#else
+static inline int watchdog_register_pretimeout(struct watchdog_device *wdd)
+{
+	return 0;
+}
+
+static inline void watchdog_unregister_pretimeout(struct watchdog_device *wdd)
+{
+}
+
+static inline int watchdog_pretimeout_available_governors_get(char *buf)
+{
+	return -EINVAL;
+}
+
+static inline int watchdog_pretimeout_governor_get(struct watchdog_device *wdd,
+						   char *buf)
+{
+	return -EINVAL;
+}
+
+static inline int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
+						   const char *buf)
+{
+	return -EINVAL;
+}
+#endif
+
+#endif