1#ifndef __WATCHDOG_PRETIMEOUT_H
 2#define __WATCHDOG_PRETIMEOUT_H
 3
 4#define WATCHDOG_GOV_NAME_MAXLEN	20
 5
 6struct watchdog_device;
 7
 8struct watchdog_governor {
 9	const char	name[WATCHDOG_GOV_NAME_MAXLEN];
10	void		(*pretimeout)(struct watchdog_device *wdd);
11};
12
13#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_GOV)
14/* Interfaces to watchdog pretimeout governors */
15int watchdog_register_governor(struct watchdog_governor *gov);
16void watchdog_unregister_governor(struct watchdog_governor *gov);
17
18/* Interfaces to watchdog_dev.c */
19int watchdog_register_pretimeout(struct watchdog_device *wdd);
20void watchdog_unregister_pretimeout(struct watchdog_device *wdd);
21int watchdog_pretimeout_available_governors_get(char *buf);
22int watchdog_pretimeout_governor_get(struct watchdog_device *wdd, char *buf);
23int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
24				     const char *buf);
25
26#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP)
27#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV		"noop"
28#elif IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC)
29#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV		"panic"
30#endif
31
32#else
33static inline int watchdog_register_pretimeout(struct watchdog_device *wdd)
34{
35	return 0;
36}
37
38static inline void watchdog_unregister_pretimeout(struct watchdog_device *wdd)
39{
40}
41
42static inline int watchdog_pretimeout_available_governors_get(char *buf)
43{
44	return -EINVAL;
45}
46
47static inline int watchdog_pretimeout_governor_get(struct watchdog_device *wdd,
48						   char *buf)
49{
50	return -EINVAL;
51}
52
53static inline int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
54						   const char *buf)
55{
56	return -EINVAL;
57}
58#endif
59
60#endif