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 registered:1; 38 unsigned int enabled:1; 39 unsigned int linear_tone:1; /* linear tone for IDT/STAC codec */ 40 unsigned int playing:1; 41 struct work_struct beep_work; /* scheduled task for beep event */ 42 struct mutex mutex; 43 void (*power_hook)(struct hda_beep *beep, bool on); 44 }; 45 46 #ifdef CONFIG_SND_HDA_INPUT_BEEP 47 int snd_hda_enable_beep_device(struct hda_codec *codec, int enable); 48 int snd_hda_attach_beep_device(struct hda_codec *codec, int nid); 49 void snd_hda_detach_beep_device(struct hda_codec *codec); 50 int snd_hda_register_beep_device(struct hda_codec *codec); 51 #else 52 static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid) 53 { 54 return 0; 55 } 56 static inline void snd_hda_detach_beep_device(struct hda_codec *codec) 57 { 58 } 59 static inline int snd_hda_register_beep_device(struct hda_codec *codec) 60 { 61 return 0; 62 } 63 #endif 64 #endif 65