/*************************************************************************** * __________ __ ___. * 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 "logf.h" #include "system.h" #include "string.h" #include "audio.h" #include "i2c-coldfire.h" #include "audiohw.h" const struct sound_settings_info audiohw_settings[] = { [SOUND_VOLUME] = {"dB", 0, 1, -73, 6, -20}, /* HAVE_SW_TONE_CONTROLS */ [SOUND_BASS] = {"dB", 0, 1, -24, 24, 0}, [SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0}, [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, [SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0}, [SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100}, [SOUND_LEFT_GAIN] = {"dB", 1, 1, 0, 31, 23}, [SOUND_RIGHT_GAIN] = {"dB", 1, 1, 0, 31, 23}, [SOUND_MIC_GAIN] = {"dB", 1, 1, 0, 1, 1}, }; /* convert tenth of dB volume (-840..0) to master volume register value */ int tenthdb2master(int db) { /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */ /* 1111111 == +6dB (0x7f) */ /* 1111001 == 0dB (0x79) */ /* 0110000 == -73dB (0x30 */ /* 0101111 == mute (0x2f) */ if (db < VOLUME_MIN) { return 0x2f; } else { return((db/10)+73+0x30); } } /* 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 audiohw_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); audiohw_set_recvol(0, 0, AUDIO_GAIN_MIC); audiohw_set_recvol(0, 0, AUDIO_GAIN_LINEIN); audiohw_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); audiohw_set_frequency(-1); /* default */ } /** * Switch outputs ON */ void audiohw_postinit(void) { /* All ON except ADC, MIC and LINE */ sleep(HZ); tlv320_write_reg(REG_PC, PC_ADC | PC_MIC | PC_LINE); sleep(HZ/4); audiohw_mute(false); } /** * 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 audiohw_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 */ }; unsigned value_dap, value_pc; if (fsel >= ARRAYLEN(values_src)) fsel = 1; /* Temporarily turn off the DAC and ADC before switching sample rates or they don't choose their filters correctly */ value_dap = tlv320_regs[REG_DAP]; value_pc = tlv320_regs[REG_PC]; tlv320_write_reg(REG_DAP, value_dap | DAP_DACM); tlv320_write_reg(REG_PC, value_pc | PC_DAC | PC_ADC); tlv320_write_reg(REG_SRC, values_src[fsel]); tlv320_write_reg(REG_PC, value_pc | PC_DAC); tlv320_write_reg(REG_PC, value_pc); tlv320_write_reg(REG_DAP, value_dap); } /** * Sets left and right headphone volume * * Left & Right: 48 .. 121 .. 127 => Volume -73dB (mute) .. +0 dB .. +6 dB */ void audiohw_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 audiohw_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)); } } void audiohw_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 audiohw_close(void) { audiohw_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 audiohw_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 audiohw_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 audiohw_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); }