/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Driver for WM8751 audio codec * * Based on code from the ipodlinux project - http://ipodlinux.org/ * Adapted for Rockbox in December 2005 * * Original file: linux/arch/armnommu/mach-ipod/audio.c * * Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org) * * 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 "kernel.h" #include "wmcodec.h" #include "audio.h" #include "audiohw.h" #include "system.h" const struct sound_settings_info audiohw_settings[] = { [SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25}, #ifdef USE_ADAPTIVE_BASS [SOUND_BASS] = {"", 0, 1, 0, 15, 0}, #else [SOUND_BASS] = {"dB", 1, 15, -60, 90, 0}, #endif [SOUND_TREBLE] = {"dB", 1, 15, -60, 90, 0}, [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, [SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0}, [SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100}, }; /* Flags used in combination with settings */ /* use zero crossing to reduce clicks during volume changes */ #define LOUT1_BITS (LOUT1_LO1ZC) /* latch left volume first then update left+right together */ #define ROUT1_BITS (ROUT1_RO1ZC | ROUT1_RO1VU) #define LOUT2_BITS (LOUT2_LO2ZC) #define ROUT2_BITS (ROUT2_RO2ZC | ROUT2_RO2VU) /* We use linear bass control with 200 Hz cutoff */ #ifdef USE_ADAPTIVE_BASE #define BASSCTRL_BITS (BASSCTRL_BC | BASSCTRL_BB) #else #define BASSCTRL_BITS (BASSCTRL_BC) #endif /* We use linear treble control with 4 kHz cutoff */ #define TREBCTRL_BITS (TREBCTRL_TC) static int prescaler = 0; /* convert tenth of dB volume (-730..60) 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..0000000 == mute (<= 0x2f) */ if (db < VOLUME_MIN) return 0x0; else return (db / 10) + 73 + 0x30; } static int tone_tenthdb2hw(int value) { /* -6.0db..+0db..+9.0db step 1.5db - translate -60..+0..+90 step 15 to 10..6..0 step -1. */ value = 10 - (value + 60) / 15; if (value == 6) value = 0xf; /* 0db -> off */ return value; } #ifdef USE_ADAPTIVE_BASS static int adaptivebass2hw(int value) { /* 0 to 15 step 1 - step -1 0 = off is a 15 in the register */ value = 15 - value; return value; } #endif #if defined(HAVE_WM8750) static int recvol2hw(int value) { /* convert tenth of dB of input volume (-172...300) to input register value */ /* +30dB to -17.25 0.75dB step 6 bits */ /* 111111 == +30dB (0x3f) */ /* 010111 == 0dB (0x17) */ /* 000000 == -17.25dB */ return (3*(value/10 - 0x17))/4; } #endif static void audiohw_mute(bool mute) { /* Mute: Set DACMU = 1 to soft-mute the audio DACs. */ /* Unmute: Set DACMU = 0 to soft-un-mute the audio DACs. */ wmcodec_write(DACCTRL, mute ? DACCTRL_DACMU : 0); } /* Reset and power up the WM8751 */ void audiohw_preinit(void) { #ifdef MROBE_100 /* controls headphone ouput */ GPIOL_ENABLE |= 0x10; GPIOL_OUTPUT_EN |= 0x10; GPIOL_OUTPUT_VAL |= 0x10; /* disable */ #endif /* * 1. Switch on power supplies. * By default the WM8751 is in Standby Mode, the DAC is * digitally muted and the Audio Interface, Line outputs * and Headphone outputs are all OFF (DACMU = 1 Power * Management registers 1 and 2 are all zeros). */ wmcodec_write(RESET, RESET_RESET); /*Reset*/ /* 2. Enable Vmid and VREF. */ wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_5K); #ifdef CODEC_SLAVE wmcodec_write(AINTFCE,AINTFCE_WL_16|AINTFCE_FORMAT_I2S); #else /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */ /* IWL=00(16 bit) FORMAT=10(I2S format) */ wmcodec_write(AINTFCE, AINTFCE_MS | AINTFCE_WL_16 | AINTFCE_FORMAT_I2S); #endif /* Set default samplerate */ audiohw_set_frequency(HW_FREQ_DEFAULT); } /* Enable DACs and audio output after a short delay */ void audiohw_postinit(void) { /* From app notes: allow Vref to stabilize to reduce clicks */ sleep(HZ); /* 3. Enable DACs as required. */ wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR); /* 4. Enable line and / or headphone output buffers as required. */ #if defined(MROBE_100) || defined(MPIO_HD200) wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1); #else wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1 | PWRMGMT2_LOUT2 | PWRMGMT2_ROUT2); #endif /* Full -0dB on the DACS */ wmcodec_write(LEFTGAIN, 0xff); wmcodec_write(RIGHTGAIN, RIGHTGAIN_RDVU | 0xff); wmcodec_write(ADDITIONAL1, ADDITIONAL1_TSDEN | ADDITIONAL1_TOEN | ADDITIONAL1_DMONOMIX_LLRR | ADDITIONAL1_VSEL_DEFAULT); wmcodec_write(LEFTMIX1, LEFTMIX1_LD2LO | LEFTMIX1_LI2LO_DEFAULT); wmcodec_write(RIGHTMIX2, RIGHTMIX2_RD2RO | RIGHTMIX2_RI2RO_DEFAULT); #ifdef TOSHIBA_GIGABEAT_F #ifdef HAVE_HARDWARE_BEEP /* Single-ended mono input */ wmcodec_write(MONOMIX1, 0); /* Route mono input to both outputs at 0dB */ wmcodec_write(LEFTMIX2, LEFTMIX2_MI2LO | LEFTMIX2_MI2LOVOL(2)); wmcodec_write(RIGHTMIX1, RIGHTMIX1_MI2RO | RIGHTMIX1_MI2ROVOL(2)); #endif #endif #ifdef MPIO_HD200 /* Crude fix for high pitch noise at startup * I should find out what realy causes this */ wmcodec_write(LOUT1, LOUT1_BITS|0x7f); wmcodec_write(ROUT1, ROUT1_BITS|0x7f); wmcodec_write(LOUT1, LOUT1_BITS); wmcodec_write(ROUT1, ROUT1_BITS); #endif /* lower power consumption */ wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_50K); audiohw_mute(false); #ifdef MROBE_100 /* enable headphone output */ GPIOL_OUTPUT_VAL &= ~0x10; GPIOL_OUTPUT_EN |= 0x10; #endif } void audiohw_set_master_vol(int vol_l, int vol_r) { /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */ /* 1111111 == +6dB */ /* 1111001 == 0dB */ /* 0110000 == -73dB */ /* 0101111 == mute (0x2f) */ wmcodec_write(LOUT1, LOUT1_BITS | LOUT1_LOUT1VOL(vol_l)); wmcodec_write(ROUT1, ROUT1_BITS | ROUT1_ROUT1VOL(vol_r)); } #ifndef MROBE_100 void audiohw_set_lineout_vol(int vol_l, int vol_r) { wmcodec_write(LOUT2, LOUT2_BITS | LOUT2_LOUT2VOL(vol_l)); wmcodec_write(ROUT2, ROUT2_BITS | ROUT2_ROUT2VOL(vol_r)); } #endif void audiohw_set_bass(int value) { wmcodec_write(BASSCTRL, BASSCTRL_BITS | #ifdef USE_ADAPTIVE_BASS BASSCTRL_BASS(adaptivebass2hw(value))); #else BASSCTRL_BASS(tone_tenthdb2hw(value))); #endif } void audiohw_set_treble(int value) { wmcodec_write(TREBCTRL, TREBCTRL_BITS | TREBCTRL_TREB(tone_tenthdb2hw(value))); } void audiohw_set_prescaler(int value) { prescaler = 3 * value / 15; wmcodec_write(LEFTGAIN, 0xff - (prescaler & LEFTGAIN_LDACVOL)); wmcodec_write(RIGHTGAIN, RIGHTGAIN_RDVU | (0xff - (prescaler & RIGHTGAIN_RDACVOL))); } /* Nice shutdown of WM8751 codec */ void audiohw_close(void) { /* 1. Set DACMU = 1 to soft-mute the audio DACs. */ audiohw_mute(true); /* 2. Disable all output buffers. */ wmcodec_write(PWRMGMT2, 0x0); /* 3. Switch off the power supplies. */ wmcodec_write(PWRMGMT1, 0x0); } void audiohw_set_frequency(int fsel) { (void)fsel; #ifndef CODEC_SLAVE static const unsigned char srctrl_table[HW_NUM_FREQ] = { HW_HAVE_11_([HW_FREQ_11] = CODEC_SRCTRL_11025HZ,) HW_HAVE_22_([HW_FREQ_22] = CODEC_SRCTRL_22050HZ,) HW_HAVE_44_([HW_FREQ_44] = CODEC_SRCTRL_44100HZ,) HW_HAVE_88_([HW_FREQ_88] = CODEC_SRCTRL_88200HZ,) }; if ((unsigned)fsel >= HW_NUM_FREQ) fsel = HW_FREQ_DEFAULT; wmcodec_write(CLOCKING, srctrl_table[fsel]); #endif } #if defined(HAVE_WM8750) void audiohw_set_recsrc(int source, bool recording) { /* INPUT1 - FM radio * INPUT2 - Line-in * INPUT3 - MIC * * if recording == false we use analog bypass from input * turn off ADC, PGA to save power * turn on output buffer(s) * * if recording == true we route input signal to PGA * and monitoring picks up signal after PGA in analog domain * turn on ADC, PGA, DAC, output buffer(s) */ switch(source) { case AUDIO_SRC_PLAYBACK: /* mute PGA, disable all audio paths but DAC and output stage*/ wmcodec_write(LINVOL, LINVOL_LINMUTE | LINVOL_LINVOL(23)); /* 0dB */ wmcodec_write(RINVOL, RINVOL_RINMUTE | RINVOL_RINVOL(23)); /* 0dB */ wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_50K); wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1); /* route DAC signal to output mixer */ wmcodec_write(LEFTMIX1, LEFTMIX1_LD2LO); wmcodec_write(RIGHTMIX2, RIGHTMIX2_RD2RO); /* unmute DAC */ audiohw_mute(false); break; case AUDIO_SRC_FMRADIO: if(recording) { /* Set input volume to PGA */ wmcodec_write(LINVOL, LINVOL_LINVOL(23)); wmcodec_write(RINVOL, RINVOL_RINVOL(23)); /* Turn on PGA and ADC */ wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_50K | PWRMGMT1_AINL | PWRMGMT1_AINR | PWRMGMT1_ADCL | PWRMGMT1_ADCR); /* Setup input source for PGA as INPUT1 * MICBOOST disabled */ wmcodec_write(ADCL, ADCL_LINSEL_LINPUT1 | ADCL_LMICBOOST_DISABLED); wmcodec_write(ADCR, ADCR_RINSEL_RINPUT1 | ADCR_RMICBOOST_DISABLED); /* setup output digital data * default is LADC -> LDATA, RADC -> RDATA * so we don't touch this */ /* power up DAC and output stage */ wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1); /* analog monitor */ wmcodec_write(LEFTMIX1, LEFTMIX1_LMIXSEL_ADCLIN | LEFTMIX1_LD2LO); wmcodec_write(RIGHTMIX2, RIGHTMIX2_RMIXSEL_ADCRIN | RIGHTMIX2_RD2RO); } else { /* turn off ADC, PGA */ wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_50K); /* turn on DAC and output stage */ wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1); /* setup monitor mode by routing input signal to outmix * at 0dB volume */ wmcodec_write(LEFTMIX1, LEFTMIX1_LI2LO | LEFTMIX1_LMIXSEL_LINPUT1 | LEFTMIX1_LI2LOVOL(0x20) | LEFTMIX1_LD2LO); wmcodec_write(RIGHTMIX2, RIGHTMIX2_RI2RO | RIGHTMIX2_RMIXSEL_RINPUT1 | RIGHTMIX2_RI2ROVOL(0x20) | RIGHTMIX2_RD2RO); } break; case AUDIO_SRC_LINEIN: /* Set input volume to PGA */ wmcodec_write(LINVOL, LINVOL_LINVOL(23)); wmcodec_write(RINVOL, RINVOL_RINVOL(23)); /* Turn on PGA, ADC, DAC */ wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_50K | PWRMGMT1_AINL | PWRMGMT1_AINR | PWRMGMT1_ADCL | PWRMGMT1_ADCR); /* turn on DAC and output stage */ wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1); /* Setup input source for PGA as INPUT2 * MICBOOST disabled */ wmcodec_write(ADCL, ADCL_LINSEL_LINPUT2 | ADCL_LMICBOOST_DISABLED); wmcodec_write(ADCR, ADCR_RINSEL_RINPUT2 | ADCR_RMICBOOST_DISABLED); /* setup output digital data * default is LADC -> LDATA, RADC -> RDATA * so we don't touch this */ /* digital monitor */ wmcodec_write(LEFTMIX1, LEFTMIX1_LMIXSEL_ADCLIN | LEFTMIX1_LD2LO); wmcodec_write(RIGHTMIX2, RIGHTMIX2_RMIXSEL_ADCRIN | RIGHTMIX2_RD2RO); break; case AUDIO_SRC_MIC: /* Set input volume to PGA */ wmcodec_write(LINVOL, LINVOL_LINVOL(23)); wmcodec_write(RINVOL, RINVOL_RINVOL(23)); /* Turn on PGA and ADC, turn off DAC */ wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_50K | PWRMGMT1_AINL | PWRMGMT1_AINR | PWRMGMT1_ADCL | PWRMGMT1_ADCR); /* turn on DAC and output stage */ wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1); /* Setup input source for PGA as INPUT3 * MICBOOST disabled */ wmcodec_write(ADCL, ADCL_LINSEL_LINPUT3 | ADCL_LMICBOOST_DISABLED); wmcodec_write(ADCR, ADCR_RINSEL_RINPUT3 | ADCR_RMICBOOST_DISABLED); /* setup output digital data * default is LADC -> LDATA, RADC -> RDATA * so we don't touch this */ /* analog monitor */ wmcodec_write(LEFTMIX1, LEFTMIX1_LMIXSEL_ADCLIN | LEFTMIX1_LD2LO); wmcodec_write(RIGHTMIX2, RIGHTMIX2_RMIXSEL_ADCRIN | RIGHTMIX2_RD2RO); break; } /* switch(source) */ } /* Setup PGA gain */ void audiohw_set_recvol(int left, int right, int type) { (void)type; wmcodec_write(LINVOL, LINVOL_LINVOL(recvol2hw(left))); wmcodec_write(RINVOL, RINVOL_RINVOL(recvol2hw(right))); } #endif