353 lines
11 KiB
C
353 lines
11 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: wm8975.c 28572 2010-11-13 11:38:38Z theseven $
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*
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* Driver for Cirrus Logic CS42L55 audio codec
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*
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* Copyright (c) 2010 Michael Sparmann
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 "logf.h"
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#include "system.h"
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#include "kernel.h"
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#include "string.h"
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#include "audio.h"
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#include "sound.h"
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#include "audiohw.h"
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#include "cscodec.h"
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#include "cs42l55.h"
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static int bass, treble;
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static int active_dsp_modules; /* powered DSP modules mask */
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/* convert tenth of dB volume (-600..120) to volume register value */
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static int vol_tenthdb2hw(int db)
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{
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/* -60dB to +12dB in 1dB steps */
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/* 0001100 == +12dB (0xc) */
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/* 0000000 == 0dB (0x0) */
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/* 1000100 == -60dB (0x44, this is actually -58dB) */
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if (db <= -600) return HPACTL_HPAMUTE;
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return (db / 10) & HPACTL_HPAVOL_MASK;
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}
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static void cscodec_setbits(int reg, unsigned char off, unsigned char on)
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{
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unsigned char data = (cscodec_read(reg) & ~off) | on;
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cscodec_write(reg, data);
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}
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static void audiohw_mute(bool mute)
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{
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if (mute) cscodec_setbits(PLAYCTL, 0, PLAYCTL_MSTAMUTE | PLAYCTL_MSTBMUTE);
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else cscodec_setbits(PLAYCTL, PLAYCTL_MSTAMUTE | PLAYCTL_MSTBMUTE, 0);
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}
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void audiohw_preinit(void)
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{
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cscodec_power(true);
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cscodec_clock(true);
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cscodec_reset(true);
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sleep(HZ / 100);
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cscodec_reset(false);
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bass = 0;
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treble = 0;
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active_dsp_modules = 0;
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/* Ask Cirrus or maybe Apple what the hell this means */
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cscodec_write(HIDDENCTL, HIDDENCTL_UNLOCK);
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cscodec_write(HIDDEN2E, HIDDEN2E_DEFAULT);
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cscodec_write(HIDDEN32, HIDDEN32_DEFAULT);
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cscodec_write(HIDDEN33, HIDDEN33_DEFAULT);
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cscodec_write(HIDDEN34, HIDDEN34_DEFAULT);
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cscodec_write(HIDDEN35, HIDDEN35_DEFAULT);
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cscodec_write(HIDDEN36, HIDDEN36_DEFAULT);
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cscodec_write(HIDDEN37, HIDDEN37_DEFAULT);
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cscodec_write(HIDDEN3A, HIDDEN3A_DEFAULT);
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cscodec_write(HIDDEN3C, HIDDEN3C_DEFAULT);
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cscodec_write(HIDDEN3D, HIDDEN3D_DEFAULT);
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cscodec_write(HIDDEN3E, HIDDEN3E_DEFAULT);
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cscodec_write(HIDDEN3F, HIDDEN3F_DEFAULT);
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cscodec_write(HIDDENCTL, HIDDENCTL_LOCK);
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cscodec_write(PWRCTL2, PWRCTL2_PDN_LINA_ALWAYS | PWRCTL2_PDN_LINB_ALWAYS
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| PWRCTL2_PDN_HPA_NEVER | PWRCTL2_PDN_HPB_NEVER);
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cscodec_write(CLKCTL1, CLKCTL1_MASTER | CLKCTL1_SCLKMCLK_BEFORE
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| CLKCTL1_MCLKDIV2);
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cscodec_write(CLKCTL2, CLKCTL2_44100HZ);
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cscodec_write(MISCCTL, MISCCTL_UNDOC4 | MISCCTL_ANLGZC | MISCCTL_DIGSFT);
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cscodec_write(PWRCTL1, PWRCTL1_PDN_CHRG | PWRCTL1_PDN_ADCA
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| PWRCTL1_PDN_ADCB | PWRCTL1_PDN_CODEC);
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cscodec_write(PLAYCTL, PLAYCTL_PDN_DSP
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| PLAYCTL_MSTAMUTE | PLAYCTL_MSTBMUTE);
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cscodec_write(PGAACTL, 0);
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cscodec_write(PGABCTL, 0);
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cscodec_write(HPACTL, HPACTL_HPAMUTE);
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cscodec_write(HPBCTL, HPBCTL_HPBMUTE);
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cscodec_write(LINEACTL, LINEACTL_LINEAMUTE);
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cscodec_write(LINEBCTL, LINEBCTL_LINEBMUTE);
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cscodec_write(PWRCTL1, PWRCTL1_PDN_CHRG | PWRCTL1_PDN_ADCA
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| PWRCTL1_PDN_ADCB);
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}
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void audiohw_postinit(void)
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{
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cscodec_write(HPACTL, 0);
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cscodec_write(HPBCTL, 0);
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cscodec_write(LINEACTL, 0);
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cscodec_write(LINEBCTL, 0);
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cscodec_write(CLSHCTL, CLSHCTL_ADPTPWR_SIGNAL);
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audiohw_mute(false);
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}
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void audiohw_set_volume(int vol_l, int vol_r)
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{
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vol_l = vol_tenthdb2hw(vol_l);
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vol_r = vol_tenthdb2hw(vol_r);
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cscodec_setbits(HPACTL, HPACTL_HPAVOL_MASK | HPACTL_HPAMUTE,
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vol_l << HPACTL_HPAVOL_SHIFT);
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cscodec_setbits(HPBCTL, HPBCTL_HPBVOL_MASK | HPBCTL_HPBMUTE,
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vol_r << HPBCTL_HPBVOL_SHIFT);
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}
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void audiohw_set_lineout_volume(int vol_l, int vol_r)
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{
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vol_l = vol_tenthdb2hw(vol_l);
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vol_r = vol_tenthdb2hw(vol_r);
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cscodec_setbits(LINEACTL, LINEACTL_LINEAVOL_MASK | LINEACTL_LINEAMUTE,
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vol_l << LINEACTL_LINEAVOL_SHIFT);
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cscodec_setbits(LINEBCTL, LINEBCTL_LINEBVOL_MASK | LINEBCTL_LINEBMUTE,
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vol_r << LINEBCTL_LINEBVOL_SHIFT);
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}
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void audiohw_enable_lineout(bool enable)
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{
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if (enable)
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cscodec_setbits(PWRCTL2, PWRCTL2_PDN_LINA_MASK | PWRCTL2_PDN_LINB_MASK,
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PWRCTL2_PDN_LINA_NEVER | PWRCTL2_PDN_LINB_NEVER);
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else
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cscodec_setbits(PWRCTL2, PWRCTL2_PDN_LINA_MASK | PWRCTL2_PDN_LINB_MASK,
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PWRCTL2_PDN_LINA_ALWAYS | PWRCTL2_PDN_LINB_ALWAYS);
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}
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static void handle_dsp_power(int dsp_module, bool onoff)
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{
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if (onoff)
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{
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if (!active_dsp_modules)
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cscodec_setbits(PLAYCTL, PLAYCTL_PDN_DSP, 0);
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active_dsp_modules |= dsp_module;
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}
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else
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{
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active_dsp_modules &= ~dsp_module;
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if (!active_dsp_modules)
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cscodec_setbits(PLAYCTL, 0, PLAYCTL_PDN_DSP);
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}
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}
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static void handle_tone_onoff(void)
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{
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if (bass || treble)
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{
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handle_dsp_power(DSP_MODULE_TONE, 1);
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cscodec_setbits(BTCTL, 0, BTCTL_TCEN);
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}
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else
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{
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cscodec_setbits(BTCTL, BTCTL_TCEN, 0);
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handle_dsp_power(DSP_MODULE_TONE, 0);
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}
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}
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void audiohw_set_bass(int value)
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{
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bass = value;
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handle_tone_onoff();
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if (value >= -105 && value <= 120)
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cscodec_setbits(TONECTL, TONECTL_BASS_MASK,
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(8 - value / 15) << TONECTL_BASS_SHIFT);
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}
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void audiohw_set_treble(int value)
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{
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treble = value;
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handle_tone_onoff();
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if (value >= -105 && value <= 120)
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cscodec_setbits(TONECTL, TONECTL_TREB_MASK,
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(8 - value / 15) << TONECTL_TREB_SHIFT);
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}
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void audiohw_set_bass_cutoff(int value)
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{
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cscodec_setbits(BTCTL, BTCTL_BASSCF_MASK,
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(value - 1) << BTCTL_BASSCF_SHIFT);
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}
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void audiohw_set_treble_cutoff(int value)
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{
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cscodec_setbits(BTCTL, BTCTL_TREBCF_MASK,
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(value - 1) << BTCTL_TREBCF_SHIFT);
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}
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void audiohw_set_prescaler(int value)
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{
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cscodec_setbits(MSTAVOL, MSTAVOL_VOLUME_MASK,
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(-value / 5) << MSTAVOL_VOLUME_SHIFT);
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cscodec_setbits(MSTBVOL, MSTBVOL_VOLUME_MASK,
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(-value / 5) << MSTBVOL_VOLUME_SHIFT);
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}
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/* Nice shutdown of CS42L55 codec */
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void audiohw_close(void)
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{
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audiohw_mute(true);
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cscodec_write(HPACTL, HPACTL_HPAMUTE);
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cscodec_write(HPBCTL, HPBCTL_HPBMUTE);
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cscodec_write(LINEACTL, LINEACTL_LINEAMUTE);
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cscodec_write(LINEBCTL, LINEBCTL_LINEBMUTE);
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cscodec_write(PWRCTL1, PWRCTL1_PDN_CHRG | PWRCTL1_PDN_ADCA
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| PWRCTL1_PDN_ADCB | PWRCTL1_PDN_CODEC);
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cscodec_reset(true);
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cscodec_clock(false);
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cscodec_power(false);
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}
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/* Note: Disable output before calling this function */
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void audiohw_set_frequency(int fsel)
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{
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if (fsel == HW_FREQ_8) cscodec_write(CLKCTL2, CLKCTL2_8000HZ);
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else if (fsel == HW_FREQ_11) cscodec_write(CLKCTL2, CLKCTL2_11025HZ);
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else if (fsel == HW_FREQ_12) cscodec_write(CLKCTL2, CLKCTL2_12000HZ);
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else if (fsel == HW_FREQ_16) cscodec_write(CLKCTL2, CLKCTL2_16000HZ);
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else if (fsel == HW_FREQ_22) cscodec_write(CLKCTL2, CLKCTL2_22050HZ);
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else if (fsel == HW_FREQ_24) cscodec_write(CLKCTL2, CLKCTL2_24000HZ);
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else if (fsel == HW_FREQ_32) cscodec_write(CLKCTL2, CLKCTL2_32000HZ);
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else if (fsel == HW_FREQ_44) cscodec_write(CLKCTL2, CLKCTL2_44100HZ);
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else if (fsel == HW_FREQ_48) cscodec_write(CLKCTL2, CLKCTL2_48000HZ);
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}
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#ifdef HAVE_RECORDING
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/* Saves power for targets supporting only mono microphone. */
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#define MONO_MIC
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/* Classic OF does not bypass PGA when line-in is selected. It can be
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* bypassed for power saving instead of using it at fixed 0 dB gain.
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* See CS42L55 DS, Figure 1 (Typical Connection Diagram), Note 4.
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*/
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/*#define BYPASS_PGA*/
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void audiohw_enable_recording(bool source_mic)
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{
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/* mute ADCs */
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cscodec_write(ADCCTL, ADCCTL_ADCAMUTE | ADCCTL_ADCBMUTE);
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/* from cs42l55 DS:
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* PWRCTL1[3]: ADC charge pump, for optimal ADC performance
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* and power consumption, set to ‘1’b when VA > 2.1 V and
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* set to ‘0’b when VA < 2.1 V.
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*/
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if (source_mic)
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{
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#ifdef MONO_MIC
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/* power-up CODEC, ADCA and ADC pump */
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cscodec_write(PWRCTL1, PWRCTL1_PDN_ADCB);
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#else
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/* power-up CODEC, ADCA, ADCB and ADC pump */
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cscodec_write(PWRCTL1, 0);
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#endif
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#ifdef BYPASS_PGA
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/* select PGA as input */
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cscodec_setbits(ALHMUX, ALHMUX_ADCAMUX_MASK | ALHMUX_ADCBMUX_MASK,
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ALHMUX_ADCAMUX_PGAA | ALHMUX_ADCBMUX_PGAB);
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#endif
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/* configure PGA: select AIN2 and set gain */
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cscodec_write(PGAACTL, PGAACTL_MUX_AIN2A |
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((PGA_GAIN_DB << 1) & PGAACTL_VOLUME_MASK));
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#ifndef MONO_MIC
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cscodec_write(PGABCTL, PGABCTL_MUX_AIN2B |
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((PGA_GAIN_DB << 1) & PGABCTL_VOLUME_MASK));
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#endif
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}
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else /* line-in */
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{
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/* power-up CODEC, ADCA, ADCB and ADC pump */
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cscodec_write(PWRCTL1, 0);
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#ifdef BYPASS_PGA
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/* selects AIN1 as input (PGA is bypassed) */
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cscodec_setbits(ALHMUX, ALHMUX_ADCAMUX_MASK | ALHMUX_ADCBMUX_MASK,
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ALHMUX_ADCAMUX_AIN1A | ALHMUX_ADCBMUX_AIN1B);
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#else
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/* configure PGA: select AIN1 and set gain to 0dB */
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cscodec_write(PGAACTL, PGAACTL_MUX_AIN1A);
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cscodec_write(PGABCTL, PGABCTL_MUX_AIN1B);
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#endif
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}
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cscodec_write(ADCCTL, 0); /* unmute ADCs */
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}
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void audiohw_disable_recording(void)
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{
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/* reset used registers to default values */
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cscodec_write(PGAACTL, 0);
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cscodec_write(PGABCTL, 0);
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#ifdef BYPASS_PGA
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cscodec_setbits(ALHMUX, ALHMUX_ADCAMUX_MASK | ALHMUX_ADCBMUX_MASK,
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ALHMUX_ADCAMUX_PGAA | ALHMUX_ADCBMUX_PGAB);
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#endif
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/* power-down ADC section */
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cscodec_write(PWRCTL1, PWRCTL1_PDN_CHRG |
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PWRCTL1_PDN_ADCA | PWRCTL1_PDN_ADCB);
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}
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void audiohw_set_recvol(int left, int right, int type)
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{
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#ifndef MONO_MIC
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(void) type;
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#else
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if (type == AUDIO_GAIN_LINEIN)
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#endif
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cscodec_write(ADCBATT, right);
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cscodec_write(ADCAATT, left);
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}
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void audiohw_set_monitor(bool enable)
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{
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if (enable)
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{
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/* enable DSP power if it is actually disabled */
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handle_dsp_power(DSP_MODULE_MONITOR, 1);
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/* unmute ADC mixer */
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cscodec_write(AMIXACTL, 0);
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cscodec_write(AMIXBCTL, 0);
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}
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else
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{
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/* mute ADC mixer */
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cscodec_write(AMIXACTL, AMIXACTL_AMIXAMUTE);
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cscodec_write(AMIXBCTL, AMIXBCTL_AMIXBMUTE);
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/* disable DSP power if it is not being used by other modules */
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handle_dsp_power(DSP_MODULE_MONITOR, 0);
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}
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}
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#endif /* HAVE_RECORDING */
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