sound/pci/hda/hda_beep.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Digital Beep Input Interface for HD-audio codec
   4  *
   5  * Author: Matt Ranostay <matt.ranostay@konsulko.com>
   6  * Copyright (c) 2008 Embedded Alley Solutions Inc
   7  */
   8
   9 #ifndef __SOUND_HDA_BEEP_H
  10 #define __SOUND_HDA_BEEP_H
  11
  12 #include <sound/hda_codec.h>
  13
  14 #define HDA_BEEP_MODE_OFF       0
  15 #define HDA_BEEP_MODE_ON        1
  16
  17 /* beep information */
  18 struct hda_beep {
  19         struct input_dev *dev;
  20         struct hda_codec *codec;
  21         char phys[32];
  22         int tone;
  23         hda_nid_t nid;
  24         unsigned int registered:1;
  25         unsigned int enabled:1;
  26         unsigned int linear_tone:1;     /* linear tone for IDT/STAC codec */
  27         unsigned int playing:1;
  28         struct work_struct beep_work; /* scheduled task for beep event */
  29         struct mutex mutex;
  30         void (*power_hook)(struct hda_beep *beep, bool on);
  31 };
  32
  33 #ifdef CONFIG_SND_HDA_INPUT_BEEP
  34 int snd_hda_enable_beep_device(struct hda_codec *codec, int enable);
  35 int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);
  36 void snd_hda_detach_beep_device(struct hda_codec *codec);
  37 #else
  38 static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
  39 {
  40         return 0;
  41 }
  42 static inline void snd_hda_detach_beep_device(struct hda_codec *codec)
  43 {
  44 }
  45 #endif
  46 #endif