177 lines
4.8 KiB
C
177 lines
4.8 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2007 and 2009 by Karl Kurbjun
|
|
*
|
|
* 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 <stdlib.h>
|
|
#include "system.h"
|
|
#include "kernel.h"
|
|
#include "logf.h"
|
|
#include "audio.h"
|
|
#include "sound.h"
|
|
#include "file.h"
|
|
#include "dsp-target.h"
|
|
#include "dsp/ipc.h"
|
|
#include "mmu-arm.h"
|
|
#include "pcm-internal.h"
|
|
|
|
/* This is global to save some latency when pcm_play_dma_get_peak_buffer is
|
|
* called.
|
|
*/
|
|
static const void *start;
|
|
|
|
void pcm_play_dma_postinit(void)
|
|
{
|
|
/* Configure clock divider */
|
|
tsc2100_writereg(CONTROL_PAGE2, TSPP1_ADDRESS, 0x1120);
|
|
tsc2100_writereg(CONTROL_PAGE2, TSAC3_ADDRESS, 0x0800);
|
|
tsc2100_writereg(CONTROL_PAGE2, TSCPC_ADDRESS, 0x3B00);
|
|
tsc2100_writereg(CONTROL_PAGE2, TSAC1_ADDRESS, 0x0300);
|
|
tsc2100_writereg(CONTROL_PAGE2, TSCSC_ADDRESS, 0xC580);
|
|
audiohw_postinit();
|
|
}
|
|
|
|
/* Return the current location in the SDRAM to SARAM transfer along with the
|
|
* number of bytes read in the current buffer (count). There is latency with
|
|
* this method equivalent to ~ the size of the SARAM buffer since there is
|
|
* another buffer between your ears and this calculation, but this works for
|
|
* key clicks and an approximate peak meter.
|
|
*/
|
|
const void * pcm_play_dma_get_peak_buffer(int *count)
|
|
{
|
|
int cnt = DSP_(_sdem_level);
|
|
|
|
unsigned long addr = (unsigned long) start + cnt;
|
|
|
|
*count = (cnt & 0xFFFFF) >> 1;
|
|
return (void *)((addr + 2) & ~3);
|
|
}
|
|
|
|
void pcm_play_dma_init(void)
|
|
{
|
|
IO_INTC_IRQ0 = INTR_IRQ0_IMGBUF;
|
|
bitset16(&IO_INTC_EINT0, INTR_EINT0_IMGBUF);
|
|
|
|
/* Set this as a FIQ */
|
|
bitset16(&IO_INTC_FISEL0, INTR_EINT0_IMGBUF);
|
|
|
|
/* Enable the HPIB clock */
|
|
bitset16(&IO_CLK_MOD0, (CLK_MOD0_HPIB | CLK_MOD0_DSP));
|
|
|
|
IO_SDRAM_SDDMASEL = 0x24;
|
|
|
|
IO_DSPC_HPIB_CONTROL = 1 << 10 | 1 << 9 | 1 << 8 | 1 << 7 | 1 << 3 | 1 << 0;
|
|
|
|
dsp_reset();
|
|
dsp_load(dsp_image);
|
|
|
|
DSP_(_dma0_stopped)=1;
|
|
dsp_wake();
|
|
}
|
|
|
|
void pcm_dma_apply_settings(void)
|
|
{
|
|
audiohw_set_frequency(pcm_fsel);
|
|
}
|
|
|
|
/* Note that size is actually limited to the size of a short right now due to
|
|
* the implementation on the DSP side (and the way that we access it)
|
|
*/
|
|
void pcm_play_dma_start(const void *addr, size_t size)
|
|
{
|
|
unsigned long sdem_addr=(unsigned long)addr - CONFIG_SDRAM_START;
|
|
/* Initialize codec. */
|
|
DSP_(_sdem_addrl) = sdem_addr & 0xffff;
|
|
DSP_(_sdem_addrh) = sdem_addr >> 16;
|
|
DSP_(_sdem_dsp_size) = size;
|
|
DSP_(_dma0_stopped)=0;
|
|
|
|
dsp_wake();
|
|
}
|
|
|
|
void pcm_play_dma_stop(void)
|
|
{
|
|
DSP_(_dma0_stopped)=1;
|
|
dsp_wake();
|
|
}
|
|
|
|
void pcm_play_lock(void)
|
|
{
|
|
|
|
}
|
|
|
|
void pcm_play_unlock(void)
|
|
{
|
|
|
|
}
|
|
|
|
/* Only used when debugging */
|
|
static char buffer[80];
|
|
|
|
void DSPHINT(void) __attribute__ ((section(".icode")));
|
|
void DSPHINT(void)
|
|
{
|
|
unsigned int i;
|
|
size_t size;
|
|
|
|
IO_INTC_FIQ0 = INTR_IRQ0_IMGBUF;
|
|
|
|
switch (dsp_message.msg)
|
|
{
|
|
case MSG_DEBUGF:
|
|
/* DSP stores one character per word. */
|
|
for (i = 0; i < sizeof(buffer); i++)
|
|
{
|
|
buffer[i] = dsp_message.payload.debugf.buffer[i];
|
|
}
|
|
|
|
DEBUGF("DSP: %s", buffer);
|
|
break;
|
|
|
|
case MSG_REFILL:
|
|
/* Buffer empty. Try to get more. */
|
|
if (pcm_play_dma_complete_callback(PCM_DMAST_OK, &start, &size))
|
|
{
|
|
unsigned long sdem_addr=(unsigned long)start - CONFIG_SDRAM_START;
|
|
/* Flush any pending cache writes */
|
|
commit_dcache_range(start, size);
|
|
|
|
/* set the new DMA values */
|
|
DSP_(_sdem_addrl) = sdem_addr & 0xffff;
|
|
DSP_(_sdem_addrh) = sdem_addr >> 16;
|
|
DSP_(_sdem_dsp_size) = size;
|
|
|
|
DEBUGF("pcm_sdram at 0x%08lx, sdem_addr 0x%08lx",
|
|
(unsigned long)start, (unsigned long)sdem_addr);
|
|
|
|
pcm_play_dma_status_callback(PCM_DMAST_STARTED);
|
|
}
|
|
|
|
break;
|
|
default:
|
|
DEBUGF("DSP: unknown msg 0x%04x", dsp_message.msg);
|
|
break;
|
|
}
|
|
|
|
/* Re-Activate the channel */
|
|
dsp_wake();
|
|
|
|
DEBUGF("DSP: %s", buffer);
|
|
}
|
|
|