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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2009 Mark Arigo
*
* 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 "audiohw.h"
#include "i2c-pp.h"
#include "i2s.h"
#include "akcodec.h"
/*#define LOGF_ENABLE*/
#include "logf.h"
#define I2C_AUDIO_ADDRESS 0x10
/*
* Initialise the PP I2C and I2S.
*/
void audiohw_init(void)
{
unsigned long tmp;
logf("audiohw_init");
/* I2S device enable */
DEV_EN |= (DEV_I2S | DEV_EXTCLOCKS);
/* I2S device reset */
DEV_RS |= DEV_I2S;
asm volatile ("nop\n");
DEV_RS &= ~DEV_I2S;
DEV_INIT1 &= ~0x3000000;
tmp = DEV_INIT1;
DEV_INIT1 = tmp;
DEV_INIT2 &= ~0x100;
/* reset the I2S controller into known state */
i2s_reset();
/* this gpio pin maybe powers the codec chip */
GPIOB_ENABLE |= 0x01;
GPIOB_OUTPUT_EN |= 0x01;
GPIOB_OUTPUT_VAL |= 0x01;
GPIOL_ENABLE |= 0x20;
GPIOL_OUTPUT_VAL &= ~0x20;
GPIOL_OUTPUT_EN |= 0x20;
#ifdef SAMSUNG_YH920
GPO32_ENABLE |= 0x00000002;
GPO32_VAL &= ~0x00000002;
#endif
GPO32_VAL |= 0x00000020;
GPO32_ENABLE |= 0x00000020;
GPIOF_ENABLE |= 0x80;
GPIOF_OUTPUT_VAL |= 0x80;
GPIOF_OUTPUT_EN |= 0x80;
audiohw_preinit();
GPIOL_ENABLE |= 0x20;
GPIOL_OUTPUT_VAL |= 0x20;
GPIOL_OUTPUT_EN |= 0x20;
}
void akcodec_close(void)
{
GPIOF_ENABLE |= 0x80;
GPIOF_OUTPUT_VAL &= ~0x80;
GPIOF_OUTPUT_EN |= 0x80;
GPIOB_ENABLE |= 0x01;
GPIOB_OUTPUT_EN |= 0x01;
GPIOB_OUTPUT_VAL |= 0x01;
}
void akcodec_write(int reg, int data)
{
pp_i2c_send(I2C_AUDIO_ADDRESS, reg, data);
}
int akcodec_read(int reg)
{
return i2c_readbyte(I2C_AUDIO_ADDRESS, reg);
}
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