hda_beep.h

 1/* SPDX-License-Identifier: GPL-2.0+ */
 2/*
 3 * Digital Beep Input Interface for HD-audio codec
 4 *
 5 * Author: Matt Ranostay <matt.ranostay@konsulko.com>
 6 * Copyright (c) 2008 Embedded Alley Solutions Inc
 7 */
 8
 9#ifndef __SOUND_HDA_BEEP_H
10#define __SOUND_HDA_BEEP_H
11
12#include <sound/hda_codec.h>
13
14#define HDA_BEEP_MODE_OFF	0
15#define HDA_BEEP_MODE_ON	1
16
17/* beep information */
18struct hda_beep {
19	struct input_dev *dev;
20	struct hda_codec *codec;
21	char phys[32];
22	int tone;
23	hda_nid_t nid;
24	unsigned int registered:1;
25	unsigned int enabled:1;
26	unsigned int linear_tone:1;	/* linear tone for IDT/STAC codec */
27	unsigned int playing:1;
28	unsigned int keep_power_at_enable:1;	/* set by driver */
29	struct work_struct beep_work; /* scheduled task for beep event */
30	void (*power_hook)(struct hda_beep *beep, bool on);
31};
32
33#ifdef CONFIG_SND_HDA_INPUT_BEEP
34int snd_hda_enable_beep_device(struct hda_codec *codec, int enable);
35int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);
36void snd_hda_detach_beep_device(struct hda_codec *codec);
37#else
38static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
39{
40	return 0;
41}
42static inline void snd_hda_detach_beep_device(struct hda_codec *codec)
43{
44}
45#endif
46#endif