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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Driver for AS3514 audio codec
*
* Copyright (c) 2007 Daniel Ankers
* Copyright (c) 2007 Christian Gmeiner
*
* 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 "cpu.h"
#include "system.h"
#include "audiohw.h"
#include "i2s.h"
#include "i2c-pp.h"
#include "ascodec.h"
/*
* Initialise the PP I2C and I2S.
*/
void audiohw_init(void)
{
/* normal outputs for CDI and I2S pin groups */
DEV_INIT2 &= ~0x300;
/*mini2?*/
DEV_INIT1 &=~0x3000000;
/*mini2?*/
/* I2S device reset */
DEV_RS |= DEV_I2S;
DEV_RS &=~DEV_I2S;
/* I2S device enable */
DEV_EN |= DEV_I2S;
/* enable external dev clock clocks */
DEV_EN |= DEV_EXTCLOCKS;
/* external dev clock to 24MHz */
outl(inl(0x70000018) & ~0xc, 0x70000018);
#ifdef SANSA_E200
/* Prevent pops on startup */
GPIOG_ENABLE |= 0x08;
GPIO_SET_BITWISE(GPIOG_OUTPUT_VAL, 0x08);
GPIOG_OUTPUT_EN |= 0x08;
#endif
i2s_reset();
audiohw_preinit();
}
void ascodec_write(unsigned int reg, unsigned int value)
{
pp_i2c_send(AS3514_I2C_ADDR, reg, value);
}
int ascodec_read(unsigned int reg)
{
return i2c_readbyte(AS3514_I2C_ADDR, reg);
}
void ascodec_readbytes(unsigned int addr, unsigned int len, unsigned char *data)
{
i2c_readbytes(AS3514_I2C_ADDR, addr, len, data);
}
void ascodec_lock(void)
{
i2c_lock();
}
void ascodec_unlock(void)
{
i2c_unlock();
}
bool ascodec_chg_status(void)
{
return ascodec_read(AS3514_IRQ_ENRD0) & CHG_STATUS;
}
bool ascodec_endofch(void)
{
return ascodec_read(AS3514_IRQ_ENRD0) & CHG_ENDOFCH;
}
void ascodec_monitor_endofch(void)
{
ascodec_write(AS3514_IRQ_ENRD0, IRQ_ENDOFCH);
}
void ascodec_write_charger(int value)
{
ascodec_write(AS3514_CHARGER, value);
}
int ascodec_read_charger(void)
{
return ascodec_read(AS3514_CHARGER);
}
void ascodec_wait_adc_finished(void)
{
/*
* FIXME: not implemented
*
* If irqs are not available on the target platform,
* this should be most likely implemented by polling
* AS3514_IRQ_ENRD2 in the same way powermgmt-ascodec.c
* is polling IRQ_ENDOFCH.
*/
}
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