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imx233: introduce generic audio routing driver
Change-Id: Icd439e02dd9835778d2733fc01a9306552b36966
This commit is contained in:
Amaury Pouly
parent
d8368d58b0
commit
e735ce4693
2 changed files with 178 additions and 0 deletions
130
firmware/target/arm/imx233/audio-imx233.c
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130
firmware/target/arm/imx233/audio-imx233.c
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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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****************************************************************************/
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#include "audiohw.h"
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#include "audio-imx233.h"
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#include "pinctrl-imx233.h"
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void __attribute__((weak)) imx233_audio_preinit(void)
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{
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#ifdef IMX233_AUDIO_HP_GATE_BANK
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imx233_pinctrl_acquire(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, "hp_gate");
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imx233_pinctrl_set_function(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, PINCTRL_FUNCTION_GPIO);
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imx233_pinctrl_enable_gpio(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, true);
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imx233_audio_enable_hp(false);
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#endif
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#ifdef IMX233_AUDIO_SPKR_GATE_BANK
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imx233_pinctrl_acquire(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, "spkr_gate");
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imx233_pinctrl_set_function(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, PINCTRL_FUNCTION_GPIO);
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imx233_pinctrl_enable_gpio(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, true);
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imx233_audio_enable_spkr(false);
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#endif
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}
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void __attribute__((weak)) imx233_audio_postinit(void)
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{
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imx233_audio_enable_hp(true);
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}
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// enable/disable the HP audio gate (typically using a GPIO)
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void __attribute__((weak)) imx233_audio_enable_hp(bool en)
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{
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#ifdef IMX233_AUDIO_HP_GATE_BANK
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# ifdef IMX233_AUDIO_HP_GATE_INVERTED
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en = !en;
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# endif
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imx233_pinctrl_set_gpio(IMX233_AUDIO_HP_GATE_BANK, IMX233_AUDIO_HP_GATE_PIN, en);
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#else
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(void) en;
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#endif
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}
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// enable/disable the speaker audio gate (typically using a GPIO)
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void __attribute__((weak)) imx233_audio_enable_spkr(bool en)
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{
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#ifdef IMX233_AUDIO_SPKR_GATE_BANK
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# ifdef IMX233_AUDIO_SPKR_GATE_INVERTED
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en = !en;
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# endif
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imx233_pinctrl_set_gpio(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, en);
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#else
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(void) en;
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#endif
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}
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static int input_source = AUDIO_SRC_PLAYBACK;
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static unsigned input_flags = 0;
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static int output_source = AUDIO_SRC_PLAYBACK;
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static void select_audio_path(void)
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{
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#if defined(HAVE_RECORDING)
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const bool recording = input_flags & SRCF_RECORDING;
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#else
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const bool recording = false;
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#endif
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switch(input_source)
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{
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default:
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/* playback and no recording */
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input_source = AUDIO_SRC_PLAYBACK;
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/* fallthrough */
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case AUDIO_SRC_PLAYBACK:
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audiohw_set_monitor(false);
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audiohw_disable_recording();
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break;
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#if defined(HAVE_RECORDING) && (INPUT_SRC_CAPS & SRC_CAP_MIC)
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/* recording only */
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case AUDIO_SRC_MIC:
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audiohw_set_monitor(false);
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audiohw_enable_recording(true);
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break;
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#endif
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#if (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
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/* recording and playback */
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case AUDIO_SRC_FMRADIO:
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if (recording)
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{
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audiohw_set_monitor(false);
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audiohw_enable_recording(false);
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}
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else
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{
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audiohw_disable_recording();
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audiohw_set_monitor(true); /* line 2 analog audio path */
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}
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break;
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#endif /* (INPUT_SRC_CAPS & SRC_CAP_FMRADIO) */
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}
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}
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void __attribute__((weak)) audio_input_mux(int source, unsigned flags)
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{
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input_source = source;
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input_flags = flags;
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select_audio_path();
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}
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void __attribute__((weak)) audio_set_output_source(int source)
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{
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output_source = source;
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select_audio_path();
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}
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48
firmware/target/arm/imx233/audio-imx233.h
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48
firmware/target/arm/imx233/audio-imx233.h
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@ -0,0 +1,48 @@
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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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****************************************************************************/
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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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/* target can override those functions to provide hooks to the audio code
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* alternativelly, the default implementation provide support for GPIO
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* controlled gates using the following defines
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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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*/
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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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#endif /* __audio_imx233__ */
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