384 lines
11 KiB
C
384 lines
11 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (c) 2009 Mark Arigo
|
|
*
|
|
* 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 "config.h"
|
|
#include "system.h"
|
|
#include "string.h"
|
|
|
|
/*#define LOGF_ENABLE*/
|
|
#include "logf.h"
|
|
|
|
#include "pcm_sampr.h"
|
|
#include "audio.h"
|
|
#include "akcodec.h"
|
|
#include "audiohw.h"
|
|
#include "sound.h"
|
|
|
|
static unsigned char akc_regs[AKC_NUM_REGS];
|
|
|
|
static void akc_write(int reg, unsigned val)
|
|
{
|
|
if ((unsigned)reg >= AKC_NUM_REGS)
|
|
return;
|
|
|
|
akc_regs[reg] = (unsigned char)val;
|
|
akcodec_write(reg, val);
|
|
}
|
|
|
|
static void akc_set(int reg, unsigned bits)
|
|
{
|
|
akc_write(reg, akc_regs[reg] | bits);
|
|
}
|
|
|
|
static void akc_clear(int reg, unsigned bits)
|
|
{
|
|
akc_write(reg, akc_regs[reg] & ~bits);
|
|
}
|
|
|
|
static void akc_write_masked(int reg, unsigned bits, unsigned mask)
|
|
{
|
|
akc_write(reg, (akc_regs[reg] & ~mask) | (bits & mask));
|
|
}
|
|
|
|
#if 0
|
|
static void codec_set_active(int active)
|
|
{
|
|
(void)active;
|
|
}
|
|
#endif
|
|
|
|
/* convert tenth of dB volume (-1270..0) to master volume register value */
|
|
static int vol_tenthdb2hw(int db)
|
|
{
|
|
if (db <= -1280)
|
|
return 0xff; /* mute */
|
|
else if (db >= 0)
|
|
return 0x00;
|
|
else
|
|
return ((-db)/5);
|
|
}
|
|
|
|
/*static void audiohw_mute(bool mute)
|
|
{
|
|
if (mute)
|
|
{
|
|
akc_set(AK4537_DAC, SMUTE);
|
|
udelay(200000);
|
|
}
|
|
else
|
|
{
|
|
udelay(200000);
|
|
akc_clear(AK4537_DAC, SMUTE);
|
|
}
|
|
}*/
|
|
|
|
void audiohw_preinit(void)
|
|
{
|
|
int i;
|
|
for (i = 0; i < AKC_NUM_REGS; i++)
|
|
akc_regs[i] = akcodec_read(i);
|
|
|
|
/* POWER UP SEQUENCE (from the datasheet) */
|
|
/* Note: the delay length is what the OF uses, although the datasheet
|
|
suggests they can be shorter */
|
|
|
|
/* power up VCOM */
|
|
akc_set(AK4537_PM1, PMVCM);
|
|
udelay(100000);
|
|
|
|
/* setup AK4537_SIGSEL1 */
|
|
akc_set(AK4537_SIGSEL1, ALCS | MOUT2);
|
|
udelay(100000);
|
|
|
|
/* setup AK4537_SIGSEL2 */
|
|
akc_write_masked(AK4537_SIGSEL2, DAHS, (DAHS | HPL | HPR));
|
|
udelay(100000);
|
|
|
|
/* setup AK4537_MODE1 */
|
|
akc_write_masked(AK4537_MODE1, DIF_I2S | BICK_32FS | MCKI_PLL_12000KHZ,
|
|
(DIF_MASK | BICK_MASK | MCKI_MASK));
|
|
udelay(100000);
|
|
|
|
/* CLOCK SETUP - X'tal used in PLL mode (master mode) */
|
|
|
|
/* release the pull-down of the XTI pin and power-up the X'tal osc */
|
|
akc_write_masked(AK4537_PM2, PMXTL, (MCLKPD | PMXTL));
|
|
udelay(100000);
|
|
|
|
/* power-up the PLL */
|
|
akc_set(AK4537_PM2, PMPLL);
|
|
udelay(100000);
|
|
|
|
/* enable MCKO output and setup MCKO output freq */
|
|
akc_set(AK4537_MODE1, MCKO_EN);
|
|
udelay(100000);
|
|
|
|
/* ENABLE HEADPHONE AMP OUTPUT */
|
|
|
|
/* setup the sampling freq if PLL mode is used */
|
|
akc_write_masked(AK4537_MODE2, AKC_PLL_44100HZ, FS_MASK);
|
|
|
|
/* setup the low freq boost level */
|
|
akc_write_masked(AK4537_DAC, BST_OFF, BST_MASK);
|
|
|
|
/* setup the digital volume */
|
|
akc_write(AK4537_ATTL, 0x10);
|
|
akc_write(AK4537_ATTR, 0x10);
|
|
|
|
/* power up the DAC */
|
|
akc_set(AK4537_PM2, PMDAC);
|
|
udelay(100000);
|
|
|
|
/* power up the headphone amp */
|
|
akc_clear(AK4537_SIGSEL2, HPL | HPR);
|
|
udelay(100000);
|
|
|
|
/* power up the common voltage of headphone amp */
|
|
akc_set(AK4537_PM2, PMHPL | PMHPR);
|
|
udelay(100000);
|
|
}
|
|
|
|
void audiohw_postinit(void)
|
|
{
|
|
/* nothing */
|
|
}
|
|
|
|
void audiohw_close(void)
|
|
{
|
|
/* POWER DOWN SEQUENCE (from the datasheet) */
|
|
|
|
/* mute */
|
|
akc_write(AK4537_ATTL, 0xff);
|
|
akc_write(AK4537_ATTR, 0xff);
|
|
akc_set(AK4537_DAC, SMUTE);
|
|
udelay(100000);
|
|
|
|
/* power down the common voltage of headphone amp */
|
|
akc_clear(AK4537_PM2, PMHPL | PMHPR);
|
|
|
|
/* power down the DAC */
|
|
akc_clear(AK4537_PM2, PMDAC);
|
|
|
|
/* power down the headphone amp */
|
|
akc_set(AK4537_SIGSEL2, HPL | HPR);
|
|
|
|
/* disable MCKO */
|
|
akc_clear(AK4537_MODE1, MCKO_EN);
|
|
|
|
/* power down X'tal and PLL, pull down the XTI pin */
|
|
akc_write_masked(AK4537_PM2, MCLKPD, (MCLKPD | PMXTL | PMPLL));
|
|
|
|
/* power down VCOM */
|
|
akc_clear(AK4537_PM1, PMVCM);
|
|
udelay(100000);
|
|
|
|
akcodec_close(); /* target-specific */
|
|
}
|
|
|
|
void audiohw_set_volume(int vol_l, int vol_r)
|
|
{
|
|
vol_l = vol_tenthdb2hw(vol_l);
|
|
vol_r = vol_tenthdb2hw(vol_r);
|
|
akc_write(AK4537_ATTL, vol_l & 0xff);
|
|
akc_write(AK4537_ATTR, vol_r & 0xff);
|
|
}
|
|
|
|
void audiohw_set_frequency(int fsel)
|
|
{
|
|
static const unsigned char srctrl_table[HW_NUM_FREQ] =
|
|
{
|
|
HW_HAVE_8_([HW_FREQ_8] = AKC_PLL_8000HZ, )
|
|
HW_HAVE_11_([HW_FREQ_11] = AKC_PLL_11025HZ,)
|
|
HW_HAVE_16_([HW_FREQ_16] = AKC_PLL_16000HZ,)
|
|
HW_HAVE_22_([HW_FREQ_22] = AKC_PLL_22050HZ,)
|
|
HW_HAVE_24_([HW_FREQ_24] = AKC_PLL_24000HZ,)
|
|
HW_HAVE_32_([HW_FREQ_32] = AKC_PLL_32000HZ,)
|
|
HW_HAVE_44_([HW_FREQ_44] = AKC_PLL_44100HZ,)
|
|
HW_HAVE_48_([HW_FREQ_48] = AKC_PLL_48000HZ,)
|
|
};
|
|
|
|
if ((unsigned)fsel >= HW_NUM_FREQ)
|
|
fsel = HW_FREQ_DEFAULT;
|
|
|
|
akc_write_masked(AK4537_MODE2, srctrl_table[fsel], FS_MASK);
|
|
}
|
|
|
|
#if defined(HAVE_RECORDING)
|
|
void audiohw_set_recsrc(int source)
|
|
{
|
|
switch(source)
|
|
{
|
|
case AUDIO_SRC_PLAYBACK:
|
|
/* disable mic power supply */
|
|
#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
|
|
akc_clear(AK4537_MIC, MPWRE);
|
|
#else
|
|
akc_clear(AK4537_MIC, MPWRI);
|
|
#endif
|
|
/* power down ADC, mic preamp and line amp */
|
|
akc_clear(AK4537_PM1, PMADL | PMMICL | PMIPGL);
|
|
akc_clear(AK4537_PM3, PMADR | PMMICR | PMIPGR);
|
|
|
|
/* break ADC -> DAC connection */
|
|
akc_clear(AK4537_MODE2, LOOP);
|
|
|
|
break;
|
|
|
|
#if (INPUT_SRC_CAPS & SRC_CAP_FMRADIO)
|
|
case AUDIO_SRC_FMRADIO:
|
|
/* disable mic power supply */
|
|
#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
|
|
akc_clear(AK4537_MIC, MPWRE);
|
|
#else
|
|
akc_clear(AK4537_MIC, MPWRI);
|
|
#endif
|
|
/* disable mic preamp */
|
|
akc_clear(AK4537_PM1, PMMICL);
|
|
|
|
/* Select line2 input: Radio */
|
|
akc_set(AK4537_PM3, INL | INR);
|
|
/* route ALC output to ADC input */
|
|
akc_set(AK4537_MIC, MICAD);
|
|
/* set ALC (automatic level control) to manual mode */
|
|
akc_clear(AK4537_ALC1, ALC1);
|
|
|
|
/* set gain control to independent left & right gain */
|
|
akc_set(AK4537_MIC, IPGAC);
|
|
|
|
/* power up left channel input and ADC */
|
|
akc_set(AK4537_PM1, PMADL | PMIPGL);
|
|
/* power up right channel input and ADC */
|
|
akc_set(AK4537_PM3, PMADR | PMIPGR);
|
|
|
|
/* set line in vol = 0 dB */
|
|
akc_write(AK4537_IPGAL, 0x2f);
|
|
akc_write(AK4537_IPGAR, 0x2f);
|
|
|
|
/* ADC -> DAC, external data to DAC ignored */
|
|
akc_set(AK4537_MODE2, LOOP);
|
|
|
|
break;
|
|
#endif /* INPUT_SRC_CAPS & SRC_CAP_FMRADIO */
|
|
|
|
#if (INPUT_SRC_CAPS & SRC_CAP_LINEIN)
|
|
case AUDIO_SRC_LINEIN:
|
|
/* disable mic power supply */
|
|
#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
|
|
akc_clear(AK4537_MIC, MPWRE);
|
|
#else
|
|
akc_clear(AK4537_MIC, MPWRI);
|
|
#endif
|
|
/* disable mic preamp */
|
|
akc_clear(AK4537_PM1, PMMICL);
|
|
|
|
/* Select line1 input */
|
|
akc_clear(AK4537_PM3, INL | INR);
|
|
/* route ALC output to ADC input */
|
|
akc_set(AK4537_MIC, MICAD);
|
|
/* set ALC (automatic level control) to manual mode */
|
|
akc_clear(AK4537_ALC1, ALC1);
|
|
|
|
/* set gain control to independent left & right gain */
|
|
akc_set(AK4537_MIC, IPGAC);
|
|
|
|
/* power up left channel input and ADC */
|
|
akc_set(AK4537_PM1, PMADL | PMIPGL);
|
|
/* power up right channel input and ADC */
|
|
akc_set(AK4537_PM3, PMADR | PMIPGR);
|
|
|
|
/* ADC -> DAC, external data to DAC ignored */
|
|
akc_set(AK4537_MODE2, LOOP);
|
|
|
|
break;
|
|
#endif /* INPUT_SRC_CAPS & SRC_CAP_LINEIN */
|
|
|
|
#if (INPUT_SRC_CAPS & SRC_CAP_MIC)
|
|
case AUDIO_SRC_MIC:
|
|
/* enable mic power supply */
|
|
#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
|
|
/* additionally select external mic */
|
|
akc_set(AK4537_MIC, MPWRE | MSEL);
|
|
#else
|
|
akc_set(AK4537_MIC, MPWRI);
|
|
#endif
|
|
|
|
/* mic out is connected to line1 input */
|
|
akc_clear(AK4537_PM3, INL | INR);
|
|
|
|
/* route ALC output to ADC input */
|
|
akc_set(AK4537_MIC, MICAD);
|
|
/* set ALC (automatic level control) to manual mode */
|
|
akc_clear(AK4537_ALC1, ALC1);
|
|
/* set gain control to 'dependent' (left&right at the same time) */
|
|
akc_clear(AK4537_MIC, IPGAC);
|
|
/* power up mic preamp, left channel ADC and line in */
|
|
akc_set(AK4537_PM1, PMMICL | PMIPGL | PMADL);
|
|
/* power up right channel ADC and line in */
|
|
akc_set(AK4537_PM3, PMADR | PMIPGR);
|
|
|
|
/* ADC -> DAC, external data to DAC ignored */
|
|
akc_set(AK4537_MODE2, LOOP);
|
|
|
|
break;
|
|
#endif /* INPUT_SRC_CAPS & SRC_CAP_MIC) */
|
|
|
|
} /* switch(source) */
|
|
}
|
|
|
|
void audiohw_set_recvol(int left, int right, int type)
|
|
{
|
|
switch (type)
|
|
{
|
|
case AUDIO_GAIN_MIC:
|
|
/* the mic preamp has a fixed gain of +15 dB. There's an additional
|
|
* activatable +20dB mic gain stage. The signal is then routed to
|
|
* the Line1 input, where you find the line attenuator with a range
|
|
* from -23.5 to +12dB, so we have a total gain range of -8.0 .. +47dB.
|
|
* NOTE: the datasheet state's different attenuator levels for mic and
|
|
* line input, but that's not precise. The +15dB difference result only
|
|
* from the mic stage.
|
|
* NOTE2: the mic is connected to the line1 input (via mic preamp),
|
|
* so if a line signal is present, you will always record a mixup.
|
|
*/
|
|
/* If gain is > 20 dB we use the additional gain stage */
|
|
if (left > 20) {
|
|
akc_set(AK4537_MIC, MGAIN);
|
|
left -= 20;
|
|
}
|
|
else {
|
|
akc_clear(AK4537_MIC, MGAIN);
|
|
}
|
|
/* the remains is done by the line input amp */
|
|
left = (left+8)*2;
|
|
akc_write(AK4537_IPGAL, left);
|
|
break;
|
|
case AUDIO_GAIN_LINEIN:
|
|
/* convert dB to register value */
|
|
left = (left+23)*2+1;
|
|
right = (right+23)*2+1;
|
|
akc_write(AK4537_IPGAL, left);
|
|
akc_write(AK4537_IPGAR, right);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
#endif /* HAVE_RECORDING */
|