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_ON 0 28 #define HDA_BEEP_MODE_OFF 1 29 #define HDA_BEEP_MODE_SWREG 2 30 31 /* beep information */ 32 struct hda_beep { 33 struct input_dev *dev; 34 struct hda_codec *codec; 35 unsigned int mode; 36 char phys[32]; 37 int tone; 38 hda_nid_t nid; 39 unsigned int enabled:1; 40 unsigned int request_enable:1; 41 unsigned int linear_tone:1; /* linear tone for IDT/STAC codec */ 42 struct work_struct register_work; /* registration work */ 43 struct delayed_work unregister_work; /* unregistration work */ 44 struct work_struct beep_work; /* scheduled task for beep event */ 45 struct mutex mutex; 46 }; 47 48 #ifdef CONFIG_SND_HDA_INPUT_BEEP 49 int snd_hda_enable_beep_device(struct hda_codec *codec, int enable); 50 int snd_hda_attach_beep_device(struct hda_codec *codec, int nid); 51 void snd_hda_detach_beep_device(struct hda_codec *codec); 52 #else 53 #define snd_hda_attach_beep_device(...) 0 54 #define snd_hda_detach_beep_device(...) 55 #endif 56 #endif 57