0f5cb94aa4
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11452 a1c6a512-1295-4272-9138-f99709370657
267 lines
6.9 KiB
C
267 lines
6.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Christian Gmeiner
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "lcd.h"
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#include "cpu.h"
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#include "kernel.h"
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#include "thread.h"
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#include "power.h"
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#include "logf.h"
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#include "system.h"
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#include "sprintf.h"
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#include "button.h"
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#include "string.h"
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#include "file.h"
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#include "buffer.h"
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#include "audio.h"
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#include "i2c-coldfire.h"
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#include "tlv320.h"
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/* local functions and definations */
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#define TLV320_ADDR 0x34
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struct tlv320_info
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{
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int vol_l;
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int vol_r;
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} tlv320;
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/* Shadow registers */
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unsigned tlv320_regs[0xf];
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void tlv320_write_reg(unsigned reg, unsigned value)
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{
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unsigned char data[2];
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/* The register address is the high 7 bits and the data the low 9 bits */
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data[0] = (reg << 1) | ((value >> 8) & 1);
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data[1] = value;
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if (i2c_write(I2C_IFACE_0, TLV320_ADDR, data, 2) != 2)
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{
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logf("tlv320 error reg=0x%x", reg);
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return;
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}
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tlv320_regs[reg] = value;
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}
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/* public functions */
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/**
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* Init our tlv with default values
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*/
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void tlv320_init(void)
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{
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memset(tlv320_regs, 0, sizeof(tlv320_regs));
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/* Initialize all registers */
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/* All ON except OUT, ADC, MIC and LINE */
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tlv320_write_reg(REG_PC, PC_OUT | PC_ADC | PC_MIC | PC_LINE);
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tlv320_set_recvol(0, 0, AUDIO_GAIN_MIC);
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tlv320_set_recvol(0, 0, AUDIO_GAIN_LINEIN);
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tlv320_mute(true);
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tlv320_write_reg(REG_AAP, AAP_DAC | AAP_MICM);
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tlv320_write_reg(REG_DAP, 0x00); /* No deemphasis */
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tlv320_write_reg(REG_DAIF, DAIF_IWL_16 | DAIF_FOR_I2S);
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tlv320_write_reg(REG_DIA, DIA_ACT);
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tlv320_set_frequency(-1); /* default */
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/* All ON except ADC, MIC and LINE */
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tlv320_write_reg(REG_PC, PC_ADC | PC_MIC | PC_LINE);
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}
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/**
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* Resets tlv320 to default values
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*/
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void tlv320_reset(void)
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{
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tlv320_write_reg(REG_RR, RR_RESET);
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}
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/**
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* Sets internal sample rate for DAC and ADC relative to MCLK
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* Selection for frequency:
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* Fs: tlv: with:
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* 11025: 0 = MCLK/2 MCLK/2 SCLK, LRCK: Audio Clk / 16
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* 22050: 0 = MCLK/2 MCLK SCLK, LRCK: Audio Clk / 8
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* 44100: 1 = MCLK MCLK SCLK, LRCK: Audio Clk / 4 (default)
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* 88200: 2 = MCLK*2 MCLK SCLK, LRCK: Audio Clk / 2
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*/
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void tlv320_set_frequency(unsigned fsel)
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{
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/* All rates available for 11.2896MHz besides 8.021 */
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unsigned char values_src[3] =
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{
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/* Fs: */
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(0x8 << 2) | SRC_CLKIN, /* 11025, 22050 */
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(0x8 << 2), /* 44100 */
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(0xf << 2), /* 88200 */
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};
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if (fsel >= ARRAYLEN(values_src))
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fsel = 1;
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tlv320_write_reg(REG_SRC, values_src[fsel]);
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}
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/**
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* Sets left and right headphone volume
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*
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* Left & Right: 48 .. 121 .. 127 => Volume -73dB (mute) .. +0 dB .. +6 dB
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*/
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void tlv320_set_headphone_vol(int vol_l, int vol_r)
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{
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unsigned value_dap = tlv320_regs[REG_DAP];
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unsigned value_dap_last = value_dap;
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unsigned value_l = LHV_LHV(vol_l);
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unsigned value_r = RHV_RHV(vol_r);
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/* keep track of current setting */
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tlv320.vol_l = vol_l;
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tlv320.vol_r = vol_r;
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if (value_l > HEADPHONE_MUTE || value_r > HEADPHONE_MUTE)
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value_dap &= ~DAP_DACM;
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else
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value_dap |= DAP_DACM;
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/* update */
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tlv320_write_reg(REG_LHV, LHV_LZC | value_l);
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tlv320_write_reg(REG_RHV, RHV_RZC | value_r);
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if (value_dap != value_dap_last)
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tlv320_write_reg(REG_DAP, value_dap);
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}
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/**
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* Set recording volume
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*
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* Line in : 0 .. 31 => Volume -34.5 .. +12 dB
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* Mic (left): 0 .. 1 => Volume +0, +20 dB
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*
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*/
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void tlv320_set_recvol(int left, int right, int type)
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{
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if (type == AUDIO_GAIN_MIC)
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{
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unsigned value_aap = tlv320_regs[REG_AAP];
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if (left)
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value_aap |= AAP_MICB; /* Enable mic boost (20dB) */
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else
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value_aap &= ~AAP_MICB;
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tlv320_write_reg(REG_AAP, value_aap);
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}
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else if (type == AUDIO_GAIN_LINEIN)
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{
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tlv320_write_reg(REG_LLIV, LLIV_LIV(left));
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tlv320_write_reg(REG_RLIV, RLIV_RIV(right));
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}
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}
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/**
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* Mute (mute=true) or enable sound (mute=false)
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*
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*/
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void tlv320_mute(bool mute)
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{
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unsigned value_dap = tlv320_regs[REG_DAP];
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unsigned value_l, value_r;
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if (mute)
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{
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value_l = LHV_LHV(HEADPHONE_MUTE);
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value_r = RHV_RHV(HEADPHONE_MUTE);
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value_dap |= DAP_DACM;
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}
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else
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{
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value_l = LHV_LHV(tlv320.vol_l);
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value_r = RHV_RHV(tlv320.vol_r);
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if (value_l > HEADPHONE_MUTE || value_r > HEADPHONE_MUTE)
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value_dap &= ~DAP_DACM;
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}
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tlv320_write_reg(REG_LHV, LHV_LZC | value_l);
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tlv320_write_reg(REG_RHV, RHV_RZC | value_r);
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tlv320_write_reg(REG_DAP, value_dap);
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}
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/* Nice shutdown of TLV320 codec */
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void tlv320_close(void)
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{
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tlv320_mute(true);
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sleep(HZ/8);
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tlv320_write_reg(REG_PC, PC_OFF | PC_CLK | PC_OSC | PC_OUT |
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PC_DAC | PC_ADC | PC_MIC | PC_LINE); /* All OFF */
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}
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void tlv320_enable_recording(bool source_mic)
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{
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unsigned value_aap, value_pc;
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if (source_mic)
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{
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/* select MIC and enable mic boost (20 dB) */
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value_aap = AAP_DAC | AAP_INSEL | AAP_MICB;
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value_pc = PC_LINE; /* power down LINE */
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}
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else
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{
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value_aap = AAP_DAC | AAP_MICM;
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value_pc = PC_MIC; /* power down MIC */
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}
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tlv320_write_reg(REG_PC, value_pc);
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tlv320_write_reg(REG_AAP, value_aap);
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}
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void tlv320_disable_recording(void)
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{
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unsigned value_pc = tlv320_regs[REG_PC];
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unsigned value_aap = tlv320_regs[REG_AAP];
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value_aap |= AAP_MICM; /* mute MIC */
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tlv320_write_reg(REG_PC, value_aap);
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value_pc |= PC_ADC | PC_MIC | PC_LINE; /* ADC, MIC and LINE off */
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tlv320_write_reg(REG_PC, value_pc);
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}
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void tlv320_set_monitor(bool enable)
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{
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unsigned value_aap, value_pc;
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if (enable)
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{
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/* Keep DAC on to allow mixing of voice with analog audio */
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value_aap = AAP_DAC | AAP_BYPASS | AAP_MICM;
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value_pc = PC_ADC | PC_MIC; /* ADC and MIC off */
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}
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else
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{
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value_aap = AAP_DAC | AAP_MICM;
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value_pc = PC_ADC | PC_MIC | PC_LINE; /* ADC, MIC and LINE off */
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}
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tlv320_write_reg(REG_AAP, value_aap);
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tlv320_write_reg(REG_PC, value_pc);
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}
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