hda_beep.h

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/*
 * Digital Beep Input Interface for HD-audio codec
 *
 * Author: Matthew Ranostay <[email protected]>
 * Copyright (c) 2008 Embedded Alley Solutions Inc
 *
 *  This driver is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This driver is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#ifndef __SOUND_HDA_BEEP_H
#define __SOUND_HDA_BEEP_H

#include "hda_codec.h"

#define HDA_BEEP_MODE_OFF   0
#define HDA_BEEP_MODE_ON    1

/* beep information */
struct hda_beep {
    struct input_dev *dev;
    struct hda_codec *codec;
    char phys[32];
    int tone;
    hda_nid_t nid;
    unsigned int enabled:1;
    unsigned int linear_tone:1; /* linear tone for IDT/STAC codec */
    struct work_struct beep_work; /* scheduled task for beep event */
    struct mutex mutex;
};

#ifdef CONFIG_SND_HDA_INPUT_BEEP
int snd_hda_enable_beep_device(struct hda_codec *codec, int enable);
int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);
void snd_hda_detach_beep_device(struct hda_codec *codec);
#else
static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
{
    return 0;
}
static inline void snd_hda_detach_beep_device(struct hda_codec *codec)
{
}
#endif
#endif