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 */
18 struct 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 	struct work_struct beep_work; /* scheduled task for beep event */
29 	struct mutex mutex;
30 	void (*power_hook)(struct hda_beep *beep, bool on);
31 };
32 
33 #ifdef CONFIG_SND_HDA_INPUT_BEEP
34 int snd_hda_enable_beep_device(struct hda_codec *codec, int enable);
35 int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);
36 void snd_hda_detach_beep_device(struct hda_codec *codec);
37 #else
snd_hda_attach_beep_device(struct hda_codec * codec,int nid)38 static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
39 {
40 	return 0;
41 }
snd_hda_detach_beep_device(struct hda_codec * codec)42 static inline void snd_hda_detach_beep_device(struct hda_codec *codec)
43 {
44 }
45 #endif
46 #endif
47