2013-06-18 14:11:51 +00:00
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2013 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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2013-06-18 14:15:07 +00:00
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****************************************************************************/
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2013-06-18 14:11:51 +00:00
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#ifndef __audio_imx233__
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#define __audio_imx233__
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#include "audio.h"
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#include "audio-target.h"
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2017-01-25 11:06:06 +00:00
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/* target can control those functions by using the following defines
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2013-06-18 14:11:51 +00:00
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* NOTE by default gates are enabled by setting GPIO to 1 (except if inverted)
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*
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* IMX233_AUDIO_HP_GATE_BANK (gpio bank)
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* IMX233_AUDIO_HP_GATE_PIN (gpio pin)
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* IMX233_AUDIO_HP_GATE_INVERTED (define if inverted)
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*
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* IMX233_AUDIO_SPKR_GATE_BANK (gpio bank)
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* IMX233_AUDIO_SPKR_GATE_PIN (gpio pin)
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* IMX233_AUDIO_SPKR_GATE_INVERTED (define if inverted)
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2016-09-20 23:02:14 +00:00
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*
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2017-01-25 11:06:06 +00:00
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* target can set those to control microphone parameters
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2016-09-20 23:02:14 +00:00
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* NOTE by default, mic select is 1, mic bias is 0 and mic resistor is 2KOhm
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* IMX233_AUDIO_MIC_SELECT (mic bias pin: 0=lradc0, 1=lradc1)
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* IMX233_AUDIO_MIC_BIAS (mic bias, 0=1.21V, 1=1.46, ..., 7=2.96V (0.25mV inc)
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* IMX233_AUDIO_MIC_RESISTOR (mic resistor: 2KOhm, 4KOhm, 8KOhm)
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2013-06-18 14:11:51 +00:00
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*/
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// do some initialisation related to next functions
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void imx233_audio_preinit(void);
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void imx233_audio_postinit(void);
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// enable/disable the HP audio gate (typically using a GPIO)
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void imx233_audio_enable_hp(bool en);
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// enable/disable the speaker audio gate (typically using a GPIO)
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void imx233_audio_enable_spkr(bool en);
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2016-09-20 23:02:14 +00:00
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#endif /* __audio_imx233__ */
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