3c46c02c54
Sometimes execution of a function has to be delayed, for example when a backlight can only be turned on when the picture has stabilized. To help in such situations add a convenience function around the poller stuff to call a function after a delay. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
44 lines
814 B
C
44 lines
814 B
C
/*
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* Copyright (C) 2010 Marc Kleine-Budde <mkl@pengutronix.de>
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*
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* This file is released under the GPLv2
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*
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*/
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#ifndef POLLER_H
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#define POLLER_H
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#include <linux/list.h>
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struct poller_struct {
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void (*func)(struct poller_struct *poller);
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int registered;
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struct list_head list;
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};
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int poller_register(struct poller_struct *poller);
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int poller_unregister(struct poller_struct *poller);
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struct poller_async;
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struct poller_async {
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struct poller_struct poller;
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void (*fn)(void *);
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void *ctx;
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uint64_t end;
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};
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int poller_call_async(struct poller_async *pa, uint64_t delay_ns,
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void (*fn)(void *), void *ctx);
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int poller_async_cancel(struct poller_async *pa);
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#ifdef CONFIG_POLLER
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void poller_call(void);
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#else
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static inline void poller_call(void)
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{
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}
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#endif /* CONFIG_POLLER */
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#endif /* !POLLER_H */
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