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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 "audio.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[2];
/* The register address is the high 7 bits and the data the low 9 bits */
data[0] = (reg << 1) | ((value >> 8) & 1);
data[1] = value;
if (i2c_write(I2C_IFACE_0, TLV320_ADDR, data, 2) != 2)
{
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 */
/* All ON except OUT, ADC, MIC and LINE */
tlv320_write_reg(REG_PC, PC_OUT | PC_ADC | PC_MIC | PC_LINE);
tlv320_set_recvol(0, 0, AUDIO_GAIN_MIC);
tlv320_set_recvol(0, 0, AUDIO_GAIN_LINEIN);
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_write_reg(REG_DIA, DIA_ACT);
tlv320_set_frequency(-1); /* default */
/* All ON except ADC, MIC and LINE */
tlv320_write_reg(REG_PC, PC_ADC | PC_MIC | PC_LINE);
}
/**
* Resets tlv320 to default values
*/
void tlv320_reset(void)
{
tlv320_write_reg(REG_RR, RR_RESET);
}
/**
* Sets internal sample rate for DAC and ADC relative to MCLK
* Selection for frequency:
* Fs: tlv: with:
* 11025: 0 = MCLK/2 MCLK/2 SCLK, LRCK: Audio Clk / 16
* 22050: 0 = MCLK/2 MCLK SCLK, LRCK: Audio Clk / 8
* 44100: 1 = MCLK MCLK SCLK, LRCK: Audio Clk / 4 (default)
* 88200: 2 = MCLK*2 MCLK SCLK, LRCK: Audio Clk / 2
*/
void tlv320_set_frequency(unsigned fsel)
{
/* All rates available for 11.2896MHz besides 8.021 */
unsigned char values_src[3] =
{
/* Fs: */
(0x8 << 2) | SRC_CLKIN, /* 11025, 22050 */
(0x8 << 2), /* 44100 */
(0xf << 2), /* 88200 */
};
if (fsel >= ARRAYLEN(values_src))
fsel = 1;
tlv320_write_reg(REG_SRC, values_src[fsel]);
}
/**
* Sets left and right headphone volume
*
* Left & Right: 48 .. 121 .. 127 => Volume -73dB (mute) .. +0 dB .. +6 dB
*/
void tlv320_set_headphone_vol(int vol_l, int vol_r)
{
unsigned value_dap = tlv320_regs[REG_DAP];
unsigned value_dap_last = value_dap;
unsigned value_l = LHV_LHV(vol_l);
unsigned value_r = RHV_RHV(vol_r);
/* keep track of current setting */
tlv320.vol_l = vol_l;
tlv320.vol_r = vol_r;
if (value_l > HEADPHONE_MUTE || value_r > HEADPHONE_MUTE)
value_dap &= ~DAP_DACM;
else
value_dap |= DAP_DACM;
/* update */
tlv320_write_reg(REG_LHV, LHV_LZC | value_l);
tlv320_write_reg(REG_RHV, RHV_RZC | value_r);
if (value_dap != value_dap_last)
tlv320_write_reg(REG_DAP, value_dap);
}
/**
* Set recording volume
*
* Line in : 0 .. 31 => Volume -34.5 .. +12 dB
* Mic (left): 0 .. 1 => Volume +0, +20 dB
*
*/
void tlv320_set_recvol(int left, int right, int type)
{
if (type == AUDIO_GAIN_MIC)
{
unsigned value_aap = tlv320_regs[REG_AAP];
if (left)
value_aap |= AAP_MICB; /* Enable mic boost (20dB) */
else
value_aap &= ~AAP_MICB;
tlv320_write_reg(REG_AAP, value_aap);
}
else if (type == AUDIO_GAIN_LINEIN)
{
tlv320_write_reg(REG_LLIV, LLIV_LIV(left));
tlv320_write_reg(REG_RLIV, RLIV_RIV(right));
}
}
/**
* Mute (mute=true) or enable sound (mute=false)
*
*/
void tlv320_mute(bool mute)
{
unsigned value_dap = tlv320_regs[REG_DAP];
unsigned value_l, value_r;
if (mute)
{
value_l = LHV_LHV(HEADPHONE_MUTE);
value_r = RHV_RHV(HEADPHONE_MUTE);
value_dap |= DAP_DACM;
}
else
{
value_l = LHV_LHV(tlv320.vol_l);
value_r = RHV_RHV(tlv320.vol_r);
if (value_l > HEADPHONE_MUTE || value_r > HEADPHONE_MUTE)
value_dap &= ~DAP_DACM;
}
tlv320_write_reg(REG_LHV, LHV_LZC | value_l);
tlv320_write_reg(REG_RHV, RHV_RZC | value_r);
tlv320_write_reg(REG_DAP, value_dap);
}
/* Nice shutdown of TLV320 codec */
void tlv320_close(void)
{
tlv320_mute(true);
sleep(HZ/8);
tlv320_write_reg(REG_PC, PC_OFF | PC_CLK | PC_OSC | PC_OUT |
PC_DAC | PC_ADC | PC_MIC | PC_LINE); /* All OFF */
}
void tlv320_enable_recording(bool source_mic)
{
unsigned value_aap, value_pc;
if (source_mic)
{
/* select MIC and enable mic boost (20 dB) */
value_aap = AAP_DAC | AAP_INSEL | AAP_MICB;
value_pc = PC_LINE; /* power down LINE */
}
else
{
value_aap = AAP_DAC | AAP_MICM;
value_pc = PC_MIC; /* power down MIC */
}
tlv320_write_reg(REG_PC, value_pc);
tlv320_write_reg(REG_AAP, value_aap);
}
void tlv320_disable_recording(void)
{
unsigned value_pc = tlv320_regs[REG_PC];
unsigned value_aap = tlv320_regs[REG_AAP];
value_aap |= AAP_MICM; /* mute MIC */
tlv320_write_reg(REG_PC, value_aap);
value_pc |= PC_ADC | PC_MIC | PC_LINE; /* ADC, MIC and LINE off */
tlv320_write_reg(REG_PC, value_pc);
}
void tlv320_set_monitor(bool enable)
{
unsigned value_aap, value_pc;
if (enable)
{
/* Keep DAC on to allow mixing of voice with analog audio */
value_aap = AAP_DAC | AAP_BYPASS | AAP_MICM;
value_pc = PC_ADC | PC_MIC; /* ADC and MIC off */
}
else
{
value_aap = AAP_DAC | AAP_MICM;
value_pc = PC_ADC | PC_MIC | PC_LINE; /* ADC, MIC and LINE off */
}
tlv320_write_reg(REG_AAP, value_aap);
tlv320_write_reg(REG_PC, value_pc);
}
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