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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Christian Gmeiner
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "lcd.h"
#include "cpu.h"
#include "kernel.h"
#include "thread.h"
#include "power.h"
#include "logf.h"
#include "system.h"
#include "sprintf.h"
#include "button.h"
#include "string.h"
#include "file.h"
#include "buffer.h"
#include "i2c-coldfire.h"
#include "tlv320.h"
/* local functions and definations */
#define TLV320_ADDR 0x34
struct tlv320_info
{
int vol_l;
int vol_r;
} tlv320;
/* Shadow registers */
unsigned tlv320_regs[0xf];
void tlv320_write_reg(unsigned reg, unsigned value)
{
unsigned char data[3];
data[0] = TLV320_ADDR;
/* The register address is the high 7 bits and the data the low 9 bits */
data[1] = (reg << 1) | ((value >> 8) & 1);
data[2] = value & 0xff;
if (i2c_write(1, data, 3) != 3)
{
logf("tlv320 error reg=0x%x", reg);
return;
}
tlv320_regs[reg] = value;
}
/* public functions */
/**
* Init our tlv with default values
*/
void tlv320_init(void)
{
memset(tlv320_regs, 0, sizeof(tlv320_regs));
/* Initialize all registers */
tlv320_write_reg(REG_PC, 0x00); /* All ON */
tlv320_set_linein_vol(0, 0);
tlv320_mute(true);
tlv320_write_reg(REG_AAP, AAP_DAC|AAP_MICM);
tlv320_write_reg(REG_DAP, 0x00); /* No deemphasis */
tlv320_write_reg(REG_DAIF, DAIF_IWL_16|DAIF_FOR_I2S);
tlv320_set_headphone_vol(0, 0);
tlv320_write_reg(REG_DIA, DIA_ACT);
tlv320_write_reg(REG_SRC, (8 << 2)); /* 44.1kHz */
}
/**
* Resets tlv320 to default values
*/
void tlv320_reset(void)
{
tlv320_write_reg(REG_RR, RR_RESET);
}
/**
* Sets left and right headphone volume (127(max) to 48(muted))
*/
void tlv320_set_headphone_vol(int vol_l, int vol_r)
{
unsigned value_l = tlv320_regs[REG_LHV];
unsigned value_r = tlv320_regs[REG_RHV];
/* keep track of current setting */
tlv320.vol_l = vol_l;
tlv320.vol_r = vol_r;
/* set new values in local register holders */
value_l = LHV_LHV(vol_l);
value_r = RHV_RHV(vol_r);
/* update */
tlv320_write_reg(REG_LHV, value_l);
tlv320_write_reg(REG_RHV, value_r);
}
/**
* Sets left and right linein volume (31(max) to 0(muted))
*/
void tlv320_set_linein_vol(int vol_l, int vol_r)
{
unsigned value_l = tlv320_regs[REG_LLIV];
unsigned value_r = tlv320_regs[REG_RLIV];
value_l |= LLIV_LIV(vol_l);
value_r |= RLIV_RIV(vol_r);
tlv320_write_reg(REG_LLIV, value_l);
tlv320_write_reg(REG_RLIV, value_r);
}
/**
* Mute (mute=true) or enable sound (mute=false)
*
*/
void tlv320_mute(bool mute)
{
unsigned value_l = tlv320_regs[REG_LHV];
unsigned value_r = tlv320_regs[REG_RHV];
if (mute)
{
value_l = LHV_LHV(HEADPHONE_MUTE);
value_r = RHV_RHV(HEADPHONE_MUTE);
}
else
{
value_l = LHV_LHV(tlv320.vol_l);
value_r = RHV_RHV(tlv320.vol_r);
}
tlv320_write_reg(REG_LHV, value_r);
tlv320_write_reg(REG_RHV, value_r);
}
void tlv320_close()
{
/* todo */
}
void tlv320_enable_recording(bool source_mic)
{
unsigned value_pc = tlv320_regs[REG_PC];
unsigned value_aap = tlv320_regs[REG_AAP];
/* select source*/
if (source_mic)
{
value_aap &= ~AAP_INSEL;
value_pc |= PC_MIC;
}
else
{
value_aap |= AAP_INSEL;
value_pc |= PC_LINE;
}
/* poweron adc */
value_pc |= PC_ADC;
tlv320_write_reg(REG_AAP, value_aap);
tlv320_write_reg(REG_PC, value_pc);
}
void tlv320_disable_recording()
{
unsigned value = tlv320_regs[REG_PC];
/* powerdown mic, linein and adc */
value &= ~(PC_MIC | PC_LINE | PC_ADC);
/* powerdown mic, linein and adc */
tlv320_write_reg(REG_PC, value);
}
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