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45571bb871
Currently the registration and free of beep input device was done manually from the register and the disconnect callbacks of the assigned codec object. This seems working in most cases, but this may be a cause of some races at probe. Moreover, due to these manual calls, the total code became unnecessarily lengthy. This patch rewrites the beep registration code to follow the standard sound device object style. This allows us reducing the code, in addition to avoiding the nested device registration calls. Signed-off-by: Takashi Iwai <tiwai@suse.de>
47 lines
1.2 KiB
C
47 lines
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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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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