1 /* SPDX-License-Identifier: GPL-2.0 */
8  * Use trigger to model operations which need to be executed when
14  *  OFF--> ON --> READY --(hit)--> HIT
21  * a trigger. is_hit means the event already happen; is_ready means the
22  * trigger is waiting for the event.
25 struct trigger {  struct
27 		TRIGGER_ERROR		= -2,
28 		TRIGGER_OFF		= -1,
33 	const char *name;  member
37 	WARN_ONCE(t->state != exp, "trigger '%s' state transist error: %d in %s()\n", \  argument
38 		  t->name, t->state, __func__)
40 static inline bool trigger_is_available(struct trigger *t)  in trigger_is_available()
42 	return t->state >= 0;  in trigger_is_available()
45 static inline bool trigger_is_error(struct trigger *t)  in trigger_is_error()
47 	return t->state <= TRIGGER_ERROR;  in trigger_is_error()
50 static inline void trigger_on(struct trigger *t)  in trigger_on()
53 	t->state = TRIGGER_ON;  in trigger_on()
56 static inline void trigger_ready(struct trigger *t)  in trigger_ready()
60 	t->state = TRIGGER_READY;  in trigger_ready()
63 static inline void trigger_hit(struct trigger *t)  in trigger_hit()
68 	t->state = TRIGGER_HIT;  in trigger_hit()
71 static inline void trigger_off(struct trigger *t)  in trigger_off()
75 	t->state = TRIGGER_OFF;  in trigger_off()
78 static inline void trigger_error(struct trigger *t)  in trigger_error()
80 	t->state = TRIGGER_ERROR;  in trigger_error()
83 static inline bool trigger_is_ready(struct trigger *t)  in trigger_is_ready()
85 	return t->state == TRIGGER_READY;  in trigger_is_ready()
88 static inline bool trigger_is_hit(struct trigger *t)  in trigger_is_hit()
90 	return t->state == TRIGGER_HIT;  in trigger_is_hit()
94 struct trigger n = {.state = TRIGGER_OFF, .name = #n}