48 строки
1.2 KiB
C
48 строки
1.2 KiB
C
/* 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 <matt.ranostay@konsulko.com>
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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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struct mutex mutex;
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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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