301 lines
8.8 KiB
C
301 lines
8.8 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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* Driver for WM8711/WM8721/WM8731 audio codecs
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*
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* Based on code from the ipodlinux project - http://ipodlinux.org/
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* Adapted for Rockbox in January 2006
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*
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* Original file: linux/arch/armnommu/mach-ipod/audio.c
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*
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* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
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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 "config.h"
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#include "logf.h"
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#include "system.h"
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#include "string.h"
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#include "pcm_sampr.h"
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#include "audio.h"
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#include "wmcodec.h"
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#include "sound.h"
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/* Init values/shadows
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* Ignore bit 8 since that only specifies "both" for updating
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* gains - "RESET" (15h) not included */
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static unsigned char wmc_regs[WMC_NUM_REGS] =
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{
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#ifdef HAVE_WM8731
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[LINVOL] = LINVOL_DEFAULT,
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[RINVOL] = RINVOL_DEFAULT,
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#endif
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[LOUTVOL] = LOUTVOL_DEFAULT | WMC_OUT_ZCEN,
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[ROUTVOL] = LOUTVOL_DEFAULT | WMC_OUT_ZCEN,
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#if defined(HAVE_WM8711) || defined(HAVE_WM8731)
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/* BYPASS on by default - OFF until needed */
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[AAPCTRL] = AAPCTRL_DEFAULT & ~AAPCTRL_BYPASS,
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/* CLKOUT and OSC on by default - OFF unless needed by a target */
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[PDCTRL] = PDCTRL_DEFAULT | PDCTRL_CLKOUTPD | PDCTRL_OSCPD,
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#elif defined(HAVE_WM8721)
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/* No BYPASS */
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[AAPCTRL] = AAPCTRL_DEFAULT,
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/* No CLKOUT or OSC */
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[PDCTRL] = PDCTRL_DEFAULT,
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#endif
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[DAPCTRL] = DAPCTRL_DEFAULT,
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#ifndef CODEC_SLAVE
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[AINTFCE] = AINTFCE_FORMAT_I2S | AINTFCE_IWL_16BIT | AINTFCE_MS,
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#else
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[AINTFCE] = AINTFCE_FORMAT_I2S | AINTFCE_IWL_16BIT,
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#endif
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[SAMPCTRL] = SAMPCTRL_DEFAULT,
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[ACTIVECTRL] = ACTIVECTRL_DEFAULT,
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};
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static void wmc_write(int reg, unsigned val)
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{
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if ((unsigned)reg >= WMC_NUM_REGS)
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return;
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wmc_regs[reg] = (unsigned char)val;
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wmcodec_write(reg, val);
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}
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static void wmc_set(int reg, unsigned bits)
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{
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wmc_write(reg, wmc_regs[reg] | bits);
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}
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static void wmc_clear(int reg, unsigned bits)
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{
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wmc_write(reg, wmc_regs[reg] & ~bits);
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}
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static void wmc_write_masked(int reg, unsigned bits, unsigned mask)
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{
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wmc_write(reg, (wmc_regs[reg] & ~mask) | (bits & mask));
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}
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/* convert tenth of dB volume (-730..60) to master volume register value */
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static int vol_tenthdb2hw(int db)
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{
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/* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
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/* 1111111 == +6dB (0x7f) */
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/* 1111001 == 0dB (0x79) */
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/* 0110000 == -73dB (0x30) */
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/* 0101111 == mute (0x2f) */
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if (db < VOLUME_MIN) {
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return 0x2f;
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} else {
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return((db/10)+0x30+73);
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}
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}
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static void audiohw_mute(bool mute)
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{
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if (mute) {
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/* Set DACMU = 1 to soft-mute the audio DACs. */
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wmc_set(DAPCTRL, DAPCTRL_DACMU);
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} else {
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/* Set DACMU = 0 to soft-un-mute the audio DACs. */
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wmc_clear(DAPCTRL, DAPCTRL_DACMU);
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}
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}
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static void codec_set_active(int active)
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{
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/* set active to 0x0 or 0x1 */
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wmc_write(ACTIVECTRL, active ? ACTIVECTRL_ACTIVE : 0);
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}
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void audiohw_preinit(void)
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{
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/* POWER UP SEQUENCE */
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/* 1) Switch on power supplies. By default the WM codec is in Standby Mode,
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* the DAC is digitally muted and the Audio Interface and Outputs are
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* all OFF. */
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wmcodec_write(RESET, RESET_RESET);
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/* 2) Set all required bits in the Power Down register (0Ch) to '0';
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* EXCEPT the OUTPD bit, this should be set to '1' (Default). */
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wmc_clear(PDCTRL, PDCTRL_DACPD | PDCTRL_POWEROFF);
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/* 3) Set required values in all other registers except 12h (Active). */
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wmc_set(AINTFCE, 0); /* Set no bits - write init/shadow value */
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wmc_set(AAPCTRL, AAPCTRL_DACSEL);
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wmc_write(SAMPCTRL, WMC_USB24_44100HZ);
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/* 4) Set the 'Active' bit in register 12h. */
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codec_set_active(true);
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/* 5) The last write of the sequence should be setting OUTPD to '0'
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* (active) in register 0Ch, enabling the DAC signal path, free
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* of any significant power-up noise. */
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wmc_clear(PDCTRL, PDCTRL_OUTPD);
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}
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void audiohw_postinit(void)
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{
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sleep(HZ);
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audiohw_mute(false);
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#if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
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/* We need to enable bit 4 of GPIOL for output for sound on H10 */
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GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 0x10);
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#elif defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330)
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GPO32_ENABLE |= 0x2;
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GPO32_VAL &= ~0x2;
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#endif
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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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/* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
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vol_l = vol_tenthdb2hw(vol_l);
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vol_r = vol_tenthdb2hw(vol_r);
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wmc_write_masked(LOUTVOL, vol_l, WMC_OUT_VOL_MASK);
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wmc_write_masked(ROUTVOL, vol_r, WMC_OUT_VOL_MASK);
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}
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/* Nice shutdown of WM codec */
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void audiohw_close(void)
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{
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/* POWER DOWN SEQUENCE */
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/* 1) Set the OUTPD bit to '1' (power down). */
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wmc_set(PDCTRL, PDCTRL_OUTPD);
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/* 2) Remove the WM codec supplies. */
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}
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void audiohw_set_frequency(int fsel)
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{
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/* For 24MHz MCLK */
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static const unsigned char srctrl_table[HW_NUM_FREQ] =
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{
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HW_HAVE_8_([HW_FREQ_8] = WMC_USB24_8000HZ,)
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HW_HAVE_32_([HW_FREQ_32] = WMC_USB24_32000HZ,)
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HW_HAVE_44_([HW_FREQ_44] = WMC_USB24_44100HZ,)
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HW_HAVE_48_([HW_FREQ_48] = WMC_USB24_48000HZ,)
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HW_HAVE_88_([HW_FREQ_88] = WMC_USB24_88200HZ,)
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HW_HAVE_96_([HW_FREQ_96] = WMC_USB24_96000HZ,)
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};
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if ((unsigned)fsel >= HW_NUM_FREQ)
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fsel = HW_FREQ_DEFAULT;
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codec_set_active(false);
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wmc_write(SAMPCTRL, srctrl_table[fsel]);
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codec_set_active(true);
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}
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#if defined(HAVE_WM8731) && defined(HAVE_RECORDING)
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/* WM8731 only */
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void audiohw_enable_recording(bool source_mic)
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{
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/* NOTE: When switching to digital monitoring we will not want
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* the DAC disabled. */
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codec_set_active(false);
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if (source_mic) {
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wmc_set(LINVOL, WMC_IN_MUTE);
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wmc_set(RINVOL, WMC_IN_MUTE);
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wmc_write_masked(PDCTRL, PDCTRL_LINEINPD | PDCTRL_DACPD,
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PDCTRL_LINEINPD | PDCTRL_MICPD |
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PDCTRL_ADCPD | PDCTRL_DACPD);
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wmc_write_masked(AAPCTRL, AAPCTRL_INSEL | AAPCTRL_SIDETONE,
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AAPCTRL_MUTEMIC | AAPCTRL_INSEL |
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AAPCTRL_BYPASS | AAPCTRL_DACSEL |
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AAPCTRL_SIDETONE);
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} else {
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wmc_write_masked(PDCTRL, PDCTRL_MICPD | PDCTRL_DACPD,
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PDCTRL_LINEINPD | PDCTRL_MICPD |
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PDCTRL_ADCPD | PDCTRL_DACPD);
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wmc_write_masked(AAPCTRL, AAPCTRL_MUTEMIC | AAPCTRL_BYPASS,
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AAPCTRL_MUTEMIC | AAPCTRL_INSEL |
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AAPCTRL_BYPASS | AAPCTRL_DACSEL |
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AAPCTRL_SIDETONE);
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wmc_clear(LINVOL, WMC_IN_MUTE);
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wmc_clear(RINVOL, WMC_IN_MUTE);
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}
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codec_set_active(true);
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}
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void audiohw_disable_recording(void)
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{
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codec_set_active(false);
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/* Mute line inputs */
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wmc_set(LINVOL, WMC_IN_MUTE);
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wmc_set(RINVOL, WMC_IN_MUTE);
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wmc_set(AAPCTRL, AAPCTRL_MUTEMIC);
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/* Turn off input analog audio paths */
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wmc_clear(AAPCTRL, AAPCTRL_BYPASS | AAPCTRL_SIDETONE);
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/* Set power config */
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wmc_write_masked(PDCTRL,
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PDCTRL_LINEINPD | PDCTRL_MICPD | PDCTRL_ADCPD,
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PDCTRL_LINEINPD | PDCTRL_MICPD | PDCTRL_DACPD |
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PDCTRL_ADCPD);
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/* Select DAC */
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wmc_set(AAPCTRL, AAPCTRL_DACSEL);
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codec_set_active(true);
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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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switch (type)
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{
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case AUDIO_GAIN_MIC:
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if (left > 0) {
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wmc_set(AAPCTRL, AAPCTRL_MIC_BOOST);
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}
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else {
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wmc_clear(AAPCTRL, AAPCTRL_MIC_BOOST);
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}
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break;
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case AUDIO_GAIN_LINEIN:
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wmc_write_masked(LINVOL, left, WMC_IN_VOL_MASK);
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wmc_write_masked(RINVOL, right, WMC_IN_VOL_MASK);
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break;
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default:
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return;
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}
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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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wmc_clear(PDCTRL, PDCTRL_LINEINPD);
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wmc_set(AAPCTRL, AAPCTRL_BYPASS);
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}
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else {
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wmc_clear(AAPCTRL, AAPCTRL_BYPASS);
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wmc_set(PDCTRL, PDCTRL_LINEINPD);
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}
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}
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#endif /* HAVE_WM8731 && HAVE_RECORDING */
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