/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Driver for AS3514 audio codec * * Copyright (c) 2007 Daniel Ankers * Copyright (c) 2007 Christian Gmeiner * * 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 "cpu.h" #include "debug.h" #include "system.h" #include "audio.h" #include "sound.h" #include "audiohw.h" #include "i2s.h" #include "ascodec.h" const struct sound_settings_info audiohw_settings[] = { [SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25}, /* 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}, #ifdef HAVE_RECORDING [SOUND_MIC_GAIN] = {"dB", 1, 1, 0, 39, 23}, [SOUND_LEFT_GAIN] = {"dB", 1, 1, 0, 31, 23}, [SOUND_RIGHT_GAIN] = {"dB", 1, 1, 0, 31, 23}, #endif }; /* Shadow registers */ static struct as3514_info { int vol_r; /* Cached volume level (R) */ int vol_l; /* Cached volume level (L) */ uint8_t regs[AS3514_NUM_AUDIO_REGS]; /* 8-bit registers */ } as3514; /* In order to keep track of source for combining volume ranges */ enum { SOURCE_DAC = 0, SOURCE_MIC1, SOURCE_LINE_IN1, SOURCE_LINE_IN1_ANALOG }; static unsigned int source = SOURCE_DAC; /* * little helper method to set register values. * With the help of as3514.regs, we minimize i2c * traffic. */ static void as3514_write(unsigned int reg, unsigned int value) { if (ascodec_write(reg, value) != 2) { DEBUGF("as3514 error reg=0x%02x", reg); } if (reg < ARRAYLEN(as3514.regs)) { as3514.regs[reg] = value; } else { DEBUGF("as3514 error reg=0x%02x", reg); } } /* Helpers to set/clear bits */ static void as3514_set(unsigned int reg, unsigned int bits) { as3514_write(reg, as3514.regs[reg] | bits); } static void as3514_clear(unsigned int reg, unsigned int bits) { as3514_write(reg, as3514.regs[reg] & ~bits); } static void as3514_write_masked(unsigned int reg, unsigned int bits, unsigned int mask) { as3514_write(reg, (as3514.regs[reg] & ~mask) | (bits & mask)); } /* convert tenth of dB volume to master volume register value */ int tenthdb2master(int db) { /* +6 to -73.5dB in 1.5dB steps == 53 levels */ if (db < VOLUME_MIN) { return 0x0; } else if (db >= VOLUME_MAX) { return 0x35; } else { return((db-VOLUME_MIN)/15); /* VOLUME_MIN is negative */ } } int sound_val2phys(int setting, int value) { int result; switch(setting) { #if defined(HAVE_RECORDING) case SOUND_LEFT_GAIN: case SOUND_RIGHT_GAIN: case SOUND_MIC_GAIN: result = (value - 23) * 15; break; #endif default: result = value; break; } return result; } /* * Initialise the PP I2C and I2S. */ void audiohw_preinit(void) { unsigned int i; /* read all reg values */ for (i = 0; i < ARRAYLEN(as3514.regs); i++) { as3514.regs[i] = ascodec_read(i); } /* Set ADC off, mixer on, DAC on, line out off, line in off, mic off */ /* Turn on SUM, DAC */ as3514_write(AS3514_AUDIOSET1, AUDIOSET1_DAC_on | AUDIOSET1_SUM_on); /* Set BIAS on, DITH on, AGC on, IBR_DAC max, LSP_LP on, IBR_LSP min */ as3514_write(AS3514_AUDIOSET2, AUDIOSET2_IBR_DAC_0 | AUDIOSET2_LSP_LP | AUDIOSET2_IBR_LSP_50); /* Set HPCM on, ZCU on */ as3514_write(AS3514_AUDIOSET3, 0); /* Mute and disable speaker */ as3514_write(AS3514_LSP_OUT_R, LSP_OUT_R_SP_OVC_TO_256MS | 0x00); as3514_write(AS3514_LSP_OUT_L, LSP_OUT_L_SP_MUTE | 0x00); /* Set headphone over-current to 0, Min volume */ as3514_write(AS3514_HPH_OUT_R, HPH_OUT_R_HP_OVC_TO_0MS | 0x00); /* Headphone ON, MUTE, Min volume */ as3514_write(AS3514_HPH_OUT_L, HPH_OUT_L_HP_ON | HPH_OUT_L_HP_MUTE | 0x00); /* LRCK 24-48kHz */ as3514_write(AS3514_PLLMODE, PLLMODE_LRCK_24_48); /* DAC_Mute_off */ as3514_set(AS3514_DAC_L, DAC_L_DAC_MUTE_off); /* M1_Sup_off */ as3514_set(AS3514_MIC1_L, MIC1_L_M1_SUP_off); /* M2_Sup_off */ as3514_set(AS3514_MIC2_L, MIC2_L_M2_SUP_off); } void audiohw_postinit(void) { /* wait until outputs have stabilized */ sleep(HZ/4); /* Sansa Clip and Sansa m200v4 need HPCM enabled, otherwise they output the L-R signal on both L and R headphone outputs instead of normal stereo. TODO : If this turns out to apply to all ams3525 targets, consider simplifying the precompiler condition to #if defined(AS3525). */ #if !defined(SANSA_CLIP) && !defined(SANSA_M200V4) as3514_write(AS3514_AUDIOSET3, AUDIOSET3_HPCM_off); #endif #ifdef CPU_PP ascodec_suppressor_on(false); #endif audiohw_mute(false); } void audiohw_set_master_vol(int vol_l, int vol_r) { unsigned int hph_r, hph_l; unsigned int mix_l, mix_r; unsigned int mix_reg_r, mix_reg_l; /* keep track of current setting */ as3514.vol_l = vol_l; as3514.vol_r = vol_r; if (source == SOURCE_LINE_IN1_ANALOG) { mix_reg_r = AS3514_LINE_IN1_R; mix_reg_l = AS3514_LINE_IN1_L; } else { mix_reg_r = AS3514_DAC_R; mix_reg_l = AS3514_DAC_L; } /* We combine the mixer channel volume range with the headphone volume range - keep first stage as loud as possible */ if (vol_r <= 0x16) { mix_r = vol_r; hph_r = 0; } else { mix_r = 0x16; hph_r = vol_r - 0x16; } if (vol_l <= 0x16) { mix_l = vol_l; hph_l = 0; } else { mix_l = 0x16; hph_l = vol_l - 0x16; } as3514_write_masked(mix_reg_r, mix_r, AS3514_VOL_MASK); as3514_write_masked(mix_reg_l, mix_l, AS3514_VOL_MASK); as3514_write_masked(AS3514_HPH_OUT_R, hph_r, AS3514_VOL_MASK); as3514_write_masked(AS3514_HPH_OUT_L, hph_l, AS3514_VOL_MASK); } void audiohw_set_lineout_vol(int vol_l, int vol_r) { as3514_write_masked(AS3514_LINE_OUT_R, vol_r, AS3514_VOL_MASK); as3514_write_masked(AS3514_LINE_OUT_L, vol_l, AS3514_VOL_MASK); } void audiohw_mute(bool mute) { if (mute) { as3514_set(AS3514_HPH_OUT_L, HPH_OUT_L_HP_MUTE); } else { as3514_clear(AS3514_HPH_OUT_L, HPH_OUT_L_HP_MUTE); } } /* Nice shutdown of AS3514 audio codec */ void audiohw_close(void) { /* mute headphones */ audiohw_mute(true); #ifdef CPU_PP ascodec_suppressor_on(true); #endif /* turn on common */ as3514_clear(AS3514_AUDIOSET3, AUDIOSET3_HPCM_off); /* turn off everything */ as3514_clear(AS3514_HPH_OUT_L, HPH_OUT_L_HP_ON); as3514_write(AS3514_AUDIOSET1, 0x0); /* Allow caps to discharge */ sleep(HZ/4); } void audiohw_set_frequency(int fsel) { (void)fsel; } #if defined(HAVE_RECORDING) void audiohw_enable_recording(bool source_mic) { if (source_mic) { source = SOURCE_MIC1; /* Sync mixer volumes before switching inputs */ audiohw_set_master_vol(as3514.vol_l, as3514.vol_r); /* ADCmux = Stereo Microphone */ as3514_write_masked(AS3514_ADC_R, ADC_R_ADCMUX_ST_MIC, ADC_R_ADCMUX); /* MIC1_on, LIN1_off */ as3514_write_masked(AS3514_AUDIOSET1, AUDIOSET1_MIC1_on, AUDIOSET1_MIC1_on | AUDIOSET1_LIN1_on); /* M1_AGC_off */ as3514_clear(AS3514_MIC1_R, MIC1_R_M1_AGC_off); } else { source = SOURCE_LINE_IN1; audiohw_set_master_vol(as3514.vol_l, as3514.vol_r); /* ADCmux = Line_IN1 */ as3514_write_masked(AS3514_ADC_R, ADC_R_ADCMUX_LINE_IN1, ADC_R_ADCMUX); /* MIC1_off, LIN1_on */ as3514_write_masked(AS3514_AUDIOSET1, AUDIOSET1_LIN1_on, AUDIOSET1_MIC1_on | AUDIOSET1_LIN1_on); } /* ADC_Mute_off */ as3514_set(AS3514_ADC_L, ADC_L_ADC_MUTE_off); /* ADC_on */ as3514_set(AS3514_AUDIOSET1, AUDIOSET1_ADC_on); } void audiohw_disable_recording(void) { source = SOURCE_DAC; /* ADC_Mute_on */ as3514_clear(AS3514_ADC_L, ADC_L_ADC_MUTE_off); /* ADC_off, LIN1_off, MIC_off */ as3514_clear(AS3514_AUDIOSET1, AUDIOSET1_ADC_on | AUDIOSET1_LIN1_on | AUDIOSET1_MIC1_on); audiohw_set_master_vol(as3514.vol_l, as3514.vol_r); } /** * Set recording volume * * Line in : 0 .. 23 .. 31 => Volume -34.5 .. +00.0 .. +12.0 dB * Mic (left): 0 .. 23 .. 39 => * Volume -34.5 .. +00.0 .. +24.0 dB * */ void audiohw_set_recvol(int left, int right, int type) { switch (type) { case AUDIO_GAIN_MIC: { /* Combine MIC gains seamlessly with ADC levels */ unsigned int mic1_r; if (left >= 36) { /* M1_Gain = +40db, ADR_Vol = +7.5dB .. +12.0 dB => +19.5 dB .. +24.0 dB */ left -= 8; mic1_r = MIC1_R_M1_GAIN_40DB; } else if (left >= 32) { /* M1_Gain = +34db, ADR_Vol = +7.5dB .. +12.0 dB => +13.5 dB .. +18.0 dB */ left -= 4; mic1_r = MIC1_R_M1_GAIN_34DB; } else { /* M1_Gain = +28db, ADR_Vol = -34.5dB .. +12.0 dB => -34.5 dB .. +12.0 dB */ mic1_r = MIC1_R_M1_GAIN_28DB; } right = left; as3514_write_masked(AS3514_MIC1_R, mic1_r, MIC1_R_M1_GAIN); break; } case AUDIO_GAIN_LINEIN: break; default: return; } as3514_write_masked(AS3514_ADC_R, right, AS3514_VOL_MASK); as3514_write_masked(AS3514_ADC_L, left, AS3514_VOL_MASK); } /** * Enable line in 1 analog monitoring * */ void audiohw_set_monitor(bool enable) { if (enable) { source = SOURCE_LINE_IN1_ANALOG; as3514_set(AS3514_AUDIOSET1, AUDIOSET1_LIN1_on); as3514_set(AS3514_LINE_IN1_R, LINE_IN1_R_LI1R_MUTE_off); as3514_set(AS3514_LINE_IN1_L, LINE_IN1_L_LI1L_MUTE_off); } else { as3514_clear(AS3514_AUDIOSET1, AUDIOSET1_LIN1_on); as3514_clear(AS3514_LINE_IN1_R, LINE_IN1_R_LI1R_MUTE_off); as3514_clear(AS3514_LINE_IN1_L, LINE_IN1_L_LI1L_MUTE_off); } /* Sync mixer volume */ audiohw_set_master_vol(as3514.vol_l, as3514.vol_r); } #endif /* HAVE_RECORDING */