sound/pci/hda/hda_beep.h

   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 /* beep information */
  28 struct hda_beep {
  29         struct input_dev *dev;
  30         struct hda_codec *codec;
  31         char phys[32];
  32         int tone;
  33         hda_nid_t nid;
  34         unsigned int enabled:1;
  35         unsigned int linear_tone:1;     /* linear tone for IDT/STAC codec */
  36         struct work_struct beep_work; /* scheduled task for beep event */
  37 };
  38
  39 #ifdef CONFIG_SND_HDA_INPUT_BEEP
  40 int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);
  41 void snd_hda_detach_beep_device(struct hda_codec *codec);
  42 #else
  43 #define snd_hda_attach_beep_device(...)         0
  44 #define snd_hda_detach_beep_device(...)
  45 #endif
  46 #endif