971a6e9c94
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27250 a1c6a512-1295-4272-9138-f99709370657
101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/***************************************************************************
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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) 2010 Marcin Bukat
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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 "system.h"
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#include "cpu.h"
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#include "audio.h"
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#include "sound.h"
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static inline void enable_mclk(bool enable)
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{
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if(enable)
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and_l(~(1<<10), &GPIO1_FUNCTION);
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else
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or_l((1<<10), &GPIO1_FUNCTION);
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}
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void audio_set_output_source(int source)
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{
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static const unsigned char txsrc_select[AUDIO_NUM_SOURCES+1] =
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{
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[AUDIO_SRC_PLAYBACK+1] = 3, /* PDOR3 */
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[AUDIO_SRC_MIC+1] = 4, /* IIS1 RcvData */
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[AUDIO_SRC_LINEIN+1] = 4, /* IIS1 RcvData */
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[AUDIO_SRC_FMRADIO+1] = 4, /* IIS1 RcvData */
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};
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int level = set_irq_level(DMA_IRQ_LEVEL);
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if ((unsigned)source >= AUDIO_NUM_SOURCES)
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source = AUDIO_SRC_PLAYBACK;
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/* route incoming audio samples to DAC */
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IIS2CONFIG = (IIS2CONFIG & ~(7 << 8)) | (txsrc_select[source+1] << 8);
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restore_irq(level);
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}
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void audio_input_mux(int source, unsigned flags)
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{
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/* Prevent pops from unneeded switching */
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static int last_source = AUDIO_SRC_PLAYBACK;
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bool recording = flags & SRCF_RECORDING;
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static bool last_recording = false;
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switch(source)
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{
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default:
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/* playback - no recording */
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source = AUDIO_SRC_PLAYBACK;
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case AUDIO_SRC_PLAYBACK:
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if (source != last_source)
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{
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audiohw_set_recsrc(source,false);
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coldfire_set_dataincontrol(0);
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}
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break;
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case AUDIO_SRC_MIC:
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case AUDIO_SRC_LINEIN:
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/* recording only */
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if (source != last_source)
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{
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audiohw_set_recsrc(source,true);
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/* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
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coldfire_set_dataincontrol((3 << 14) | (4 << 3));
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}
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break;
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case AUDIO_SRC_FMRADIO:
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if (source == last_source && recording == last_recording)
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break;
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last_recording = recording;
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audiohw_set_recsrc(source,recording);
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/* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
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coldfire_set_dataincontrol(recording ?
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((3 << 14) | (4 << 3)) : 0);
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break;
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}
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last_source = source;
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}
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