xref: /openbmc/linux/sound/pci/hda/hda_beep.h (revision e23feb16)
1 /*
2  * Digital Beep Input Interface for HD-audio codec
3  *
4  * Author: Matthew Ranostay <mranostay@embeddedalley.com>
5  * Copyright (c) 2008 Embedded Alley Solutions Inc
6  *
7  *  This driver is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 2 of the License, or
10  *  (at your option) any later version.
11  *
12  *  This driver is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, write to the Free Software
19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  */
21 
22 #ifndef __SOUND_HDA_BEEP_H
23 #define __SOUND_HDA_BEEP_H
24 
25 #include "hda_codec.h"
26 
27 #define HDA_BEEP_MODE_OFF	0
28 #define HDA_BEEP_MODE_ON	1
29 
30 /* beep information */
31 struct hda_beep {
32 	struct input_dev *dev;
33 	struct hda_codec *codec;
34 	char phys[32];
35 	int tone;
36 	hda_nid_t nid;
37 	unsigned int enabled:1;
38 	unsigned int linear_tone:1;	/* linear tone for IDT/STAC codec */
39 	unsigned int playing:1;
40 	struct work_struct beep_work; /* scheduled task for beep event */
41 	struct mutex mutex;
42 };
43 
44 #ifdef CONFIG_SND_HDA_INPUT_BEEP
45 int snd_hda_enable_beep_device(struct hda_codec *codec, int enable);
46 int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);
47 void snd_hda_detach_beep_device(struct hda_codec *codec);
48 #else
49 static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
50 {
51 	return 0;
52 }
53 static inline void snd_hda_detach_beep_device(struct hda_codec *codec)
54 {
55 }
56 #endif
57 #endif
58