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imx233: introduce generic audio routing driver

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Change-Id: Icd439e02dd9835778d2733fc01a9306552b36966
This commit is contained in:
Amaury Pouly 2013-06-18 16:11:51 +02:00
parent d8368d58b0
commit e735ce4693
2 changed files with 178 additions and 0 deletions
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130
firmware/target/arm/imx233/audio-imx233.c Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2013 by Amaury Pouly
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "audiohw.h"
#include "audio-imx233.h"
#include "pinctrl-imx233.h"
void __attribute__((weak)) imx233_audio_preinit(void)
{
#ifdef IMX233_AUDIO_HP_GATE_BANK
imx233_pinctrl_acquire(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, "hp_gate");
imx233_pinctrl_set_function(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, true);
imx233_audio_enable_hp(false);
#endif
#ifdef IMX233_AUDIO_SPKR_GATE_BANK
imx233_pinctrl_acquire(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, "spkr_gate");
imx233_pinctrl_set_function(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, true);
imx233_audio_enable_spkr(false);
#endif
}
void __attribute__((weak)) imx233_audio_postinit(void)
{
imx233_audio_enable_hp(true);
}
// enable/disable the HP audio gate (typically using a GPIO)
void __attribute__((weak)) imx233_audio_enable_hp(bool en)
{
#ifdef IMX233_AUDIO_HP_GATE_BANK
# ifdef IMX233_AUDIO_HP_GATE_INVERTED
en = !en;
# endif
imx233_pinctrl_set_gpio(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, en);
#else
(void) en;
#endif
}
// enable/disable the speaker audio gate (typically using a GPIO)
void __attribute__((weak)) imx233_audio_enable_spkr(bool en)
{
#ifdef IMX233_AUDIO_SPKR_GATE_BANK
# ifdef IMX233_AUDIO_SPKR_GATE_INVERTED
en = !en;
# endif
imx233_pinctrl_set_gpio(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, en);
#else
(void) en;
#endif
}
static int input_source = AUDIO_SRC_PLAYBACK;
static unsigned input_flags = 0;
static int output_source = AUDIO_SRC_PLAYBACK;
static void select_audio_path(void)
{
#if defined(HAVE_RECORDING)
const bool recording = input_flags & SRCF_RECORDING;
#else
const bool recording = false;
#endif
switch(input_source)
{
default:
/* playback and no recording */
input_source = AUDIO_SRC_PLAYBACK;
/* fallthrough */
case AUDIO_SRC_PLAYBACK:
audiohw_set_monitor(false);
audiohw_disable_recording();
break;
#if defined(HAVE_RECORDING) && (INPUT_SRC_CAPS & SRC_CAP_MIC)
/* recording only */
case AUDIO_SRC_MIC:
audiohw_set_monitor(false);
audiohw_enable_recording(true);
break;
#endif
#if (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
/* recording and playback */
case AUDIO_SRC_FMRADIO:
if (recording)
{
audiohw_set_monitor(false);
audiohw_enable_recording(false);
}
else
{
audiohw_disable_recording();
audiohw_set_monitor(true); /* line 2 analog audio path */
}
break;
#endif /* (INPUT_SRC_CAPS & SRC_CAP_FMRADIO) */
}
}
void __attribute__((weak)) audio_input_mux(int source, unsigned flags)
{
input_source = source;
input_flags = flags;
select_audio_path();
}
void __attribute__((weak)) audio_set_output_source(int source)
{
output_source = source;
select_audio_path();
}

48
firmware/target/arm/imx233/audio-imx233.h Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2013 by Amaury Pouly
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __audio_imx233__
#define __audio_imx233__
#include "audio.h"
#include "audio-target.h"
/* target can override those functions to provide hooks to the audio code
* alternativelly, the default implementation provide support for GPIO
* controlled gates using the following defines
* NOTE by default gates are enabled by setting GPIO to 1 (except if inverted)
*
* IMX233_AUDIO_HP_GATE_BANK (gpio bank)
* IMX233_AUDIO_HP_GATE_PIN (gpio pin)
* IMX233_AUDIO_HP_GATE_INVERTED (define if inverted)
*
* IMX233_AUDIO_SPKR_GATE_BANK (gpio bank)
* IMX233_AUDIO_SPKR_GATE_PIN (gpio pin)
* IMX233_AUDIO_SPKR_GATE_INVERTED (define if inverted)
*/
// do some initialisation related to next functions
void imx233_audio_preinit(void);
void imx233_audio_postinit(void);
// enable/disable the HP audio gate (typically using a GPIO)
void imx233_audio_enable_hp(bool en);
// enable/disable the speaker audio gate (typically using a GPIO)
void imx233_audio_enable_spkr(bool en);
#endif /* __audio_imx233__ */