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5ccf835cc7
As the widget PM may turn off the pins, this might lead to the silent output for beep when no explicit paths are given. This patch adds fake output paths for the beep widget so that the output pins are dynamically powered upon beep on/off. Signed-off-by: Takashi Iwai <tiwai@suse.de>
65 lines
2 KiB
C
65 lines
2 KiB
C
/*
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* Digital Beep Input Interface for HD-audio codec
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*
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* Author: Matthew Ranostay <mranostay@embeddedalley.com>
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* Copyright (c) 2008 Embedded Alley Solutions Inc
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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 "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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int snd_hda_register_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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static inline int snd_hda_register_beep_device(struct hda_codec *codec)
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{
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return 0;
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}
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#endif
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#endif
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