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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Maurus Cuelenaere
*
* 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 "system.h"
#include "kernel.h"
#include "logf.h"
#include "audio.h"
#include "sound.h"
#include "pcm.h"
#include "jz4740.h"
/****************************************************************************
** Playback DMA transfer
**/
void pcm_postinit(void)
{
audiohw_postinit();
/* playback sample:16 bits, burst:16 bytes */
__i2s_set_transmit_trigger(4);
__i2s_set_oss_sample_size(16);
}
const void * pcm_play_dma_get_peak_buffer(int *count)
{
/* TODO */
*count = 0;
return NULL;
}
void pcm_play_dma_init(void)
{
/* TODO */
/* Initialize default register values. */
audiohw_init();
}
void pcm_dma_apply_settings(void)
{
/* TODO */
/*
__i2s_set_oss_sample_size(pcm_sampr);
i2s_codec_set_samplerate(pcm_sampr);
*/
}
static void play_start_pcm(void)
{
__i2s_enable_transmit_dma();
__i2s_enable_replay();
REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) |= DMAC_DCCSR_EN;
}
static void play_stop_pcm(void)
{
REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) = (REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) | DMAC_DCCSR_HLT) & ~DMAC_DCCSR_EN;
__i2s_disable_transmit_dma();
__i2s_disable_replay();
}
void pcm_play_dma_start(const void *addr, size_t size)
{
REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) = DMAC_DCCSR_NDES;
REG_DMAC_DSAR(DMA_AIC_TX_CHANNEL) = PHYSADDR((unsigned long)addr);
REG_DMAC_DTAR(DMA_AIC_TX_CHANNEL) = PHYSADDR((unsigned long)AIC_DR);
REG_DMAC_DTCR(DMA_AIC_TX_CHANNEL) = size;
REG_DMAC_DRSR(DMA_AIC_TX_CHANNEL) = DMAC_DRSR_RS_AICOUT;
REG_DMAC_DCMD(DMA_AIC_TX_CHANNEL) = ( DMAC_DCMD_SAI| DMAC_DCMD_SWDH_32 | DMAC_DCMD_DS_32BIT | DMAC_DCMD_DWDH_32
| DMAC_DCMD_TIE);
play_start_pcm();
}
void DMA_CALLBACK(DMA_AIC_TX_CHANNEL)(void)
{
if( REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) & DMAC_DCCSR_TT )
__aic_disable_transmit_dma();
}
size_t pcm_get_bytes_waiting(void)
{
return REG_DMAC_DTCR(DMA_AIC_TX_CHANNEL);
}
void pcm_play_dma_stop(void)
{
play_stop_pcm();
/* TODO */
}
void pcm_play_lock(void)
{
/* TODO */
}
void pcm_play_unlock(void)
{
/* TODO */
}
void pcm_play_dma_pause(bool pause)
{
if(pause)
play_stop_pcm();
else
play_start_pcm();
}
#ifdef HAVE_RECORDING
/* TODO */
void pcm_rec_dma_init(void)
{
}
void pcm_rec_dma_close(void)
{
}
void pcm_rec_dma_start(void *addr, size_t size)
{
(void) addr;
(void) size;
}
void pcm_rec_dma_stop(void)
{
}
void pcm_rec_lock(void)
{
}
void pcm_rec_unlock(void)
{
}
const void * pcm_rec_dma_get_peak_buffer(int *count)
{
*count = 0;
return NULL;
}
void pcm_record_more(void *start, size_t size)
{
(void) start;
(void) size;
}
#endif
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