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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/hda/common/hda_beep.h
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/* SPDX-License-Identifier: GPL-2.0+ */

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/*

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 * Digital Beep Input Interface for HD-audio codec

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 *

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 * Author: Matt Ranostay <[email protected]>

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 * Copyright (c) 2008 Embedded Alley Solutions Inc

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 */

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#ifndef __SOUND_HDA_BEEP_H

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#define __SOUND_HDA_BEEP_H

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#include <sound/hda_codec.h>

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#define HDA_BEEP_MODE_OFF	0

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#define HDA_BEEP_MODE_ON	1

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/* beep information */

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struct hda_beep {

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	struct input_dev *dev;

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	struct hda_codec *codec;

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	char phys[32];

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	int tone;

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	hda_nid_t nid;

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	unsigned int registered:1;

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	unsigned int enabled:1;

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	unsigned int linear_tone:1;	/* linear tone for IDT/STAC codec */

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	unsigned int playing:1;

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	unsigned int keep_power_at_enable:1;	/* set by driver */

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	struct work_struct beep_work; /* scheduled task for beep event */

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	void (*power_hook)(struct hda_beep *beep, bool on);

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};

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#ifdef CONFIG_SND_HDA_INPUT_BEEP

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int snd_hda_enable_beep_device(struct hda_codec *codec, int enable);

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int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);

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void snd_hda_detach_beep_device(struct hda_codec *codec);

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#else

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static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)

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{

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	return 0;

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}

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static inline void snd_hda_detach_beep_device(struct hda_codec *codec)

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{

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}

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#endif

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#endif

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