b6e78acc5e
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19402 a1c6a512-1295-4272-9138-f99709370657
173 lines
3.6 KiB
C
173 lines
3.6 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) 2008 by Maurus Cuelenaere
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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 "kernel.h"
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#include "logf.h"
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#include "audio.h"
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#include "sound.h"
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#include "pcm.h"
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#include "jz4740.h"
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/****************************************************************************
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** Playback DMA transfer
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**/
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void pcm_postinit(void)
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{
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audiohw_postinit();
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/* playback sample:16 bits, burst:16 bytes */
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__i2s_set_transmit_trigger(4);
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__i2s_set_oss_sample_size(16);
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}
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const void * pcm_play_dma_get_peak_buffer(int *count)
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{
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/* TODO */
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*count = 0;
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return NULL;
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}
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void pcm_play_dma_init(void)
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{
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/* TODO */
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/* Initialize default register values. */
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audiohw_init();
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}
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void pcm_dma_apply_settings(void)
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{
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/* TODO */
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/*
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__i2s_set_oss_sample_size(pcm_sampr);
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i2s_codec_set_samplerate(pcm_sampr);
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*/
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}
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static void play_start_pcm(void)
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{
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__i2s_enable_transmit_dma();
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__i2s_enable_replay();
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REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) |= DMAC_DCCSR_EN;
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}
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static void play_stop_pcm(void)
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{
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REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) = (REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) | DMAC_DCCSR_HLT) & ~DMAC_DCCSR_EN;
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__i2s_disable_transmit_dma();
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__i2s_disable_replay();
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}
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void pcm_play_dma_start(const void *addr, size_t size)
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{
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REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) = DMAC_DCCSR_NDES;
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REG_DMAC_DSAR(DMA_AIC_TX_CHANNEL) = PHYSADDR((unsigned long)addr);
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REG_DMAC_DTAR(DMA_AIC_TX_CHANNEL) = PHYSADDR((unsigned long)AIC_DR);
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REG_DMAC_DTCR(DMA_AIC_TX_CHANNEL) = size;
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REG_DMAC_DRSR(DMA_AIC_TX_CHANNEL) = DMAC_DRSR_RS_AICOUT;
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REG_DMAC_DCMD(DMA_AIC_TX_CHANNEL) = ( DMAC_DCMD_SAI| DMAC_DCMD_SWDH_32 | DMAC_DCMD_DS_32BIT | DMAC_DCMD_DWDH_32
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| DMAC_DCMD_TIE);
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play_start_pcm();
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}
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void DMA_CALLBACK(DMA_AIC_TX_CHANNEL)(void)
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{
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if( REG_DMAC_DCCSR(DMA_AIC_TX_CHANNEL) & DMAC_DCCSR_TT )
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__aic_disable_transmit_dma();
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}
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size_t pcm_get_bytes_waiting(void)
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{
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return REG_DMAC_DTCR(DMA_AIC_TX_CHANNEL);
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}
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void pcm_play_dma_stop(void)
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{
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play_stop_pcm();
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/* TODO */
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}
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void pcm_play_lock(void)
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{
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/* TODO */
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}
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void pcm_play_unlock(void)
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{
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/* TODO */
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}
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void pcm_play_dma_pause(bool pause)
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{
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if(pause)
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play_stop_pcm();
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else
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play_start_pcm();
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}
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#ifdef HAVE_RECORDING
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/* TODO */
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void pcm_rec_dma_init(void)
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{
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}
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void pcm_rec_dma_close(void)
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{
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}
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void pcm_rec_dma_start(void *addr, size_t size)
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{
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(void) addr;
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(void) size;
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}
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void pcm_rec_dma_stop(void)
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{
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}
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void pcm_rec_lock(void)
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{
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}
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void pcm_rec_unlock(void)
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{
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}
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const void * pcm_rec_dma_get_peak_buffer(int *count)
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{
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*count = 0;
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return NULL;
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}
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void pcm_record_more(void *start, size_t size)
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{
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(void) start;
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(void) size;
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}
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#endif
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