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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* SPDX-FileCopyrightText: © 2021 Ahmad Fatoum */
#ifndef __SOUND_H_
#define __SOUND_H_
#include <linux/list.h>
#include <poller.h>
#define BELL_DEFAULT_FREQUENCY -1
struct sound_card {
const char *name;
int bell_frequency;
int (*beep)(struct sound_card *, unsigned freq, unsigned us);
/* private */
struct list_head list;
struct list_head tune;
struct poller_async poller;
};
int sound_card_register(struct sound_card *card);
int sound_card_beep_wait(struct sound_card *card, unsigned timeout_us);
int sound_card_beep(struct sound_card *card, int freq, unsigned int us);
int sound_card_beep_cancel(struct sound_card *card);
struct sound_card *sound_card_get_default(void);
static inline int beep(int freq, unsigned us)
{
return sound_card_beep(sound_card_get_default(), freq, us);
}
static inline int beep_wait(unsigned timeout_us)
{
return sound_card_beep_wait(sound_card_get_default(), timeout_us);
}
static inline int beep_cancel(void)
{
return sound_card_beep_cancel(sound_card_get_default());
}
#endif
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