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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Driver for TSC2100 audio codec
*
* Copyright (c) 2008 Jonathan Gordon
*
* 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 "audiohw.h"
#include "tsc2100.h"
const struct sound_settings_info audiohw_settings[] = {
[SOUND_VOLUME] = {"dB", 0, 1, VOLUME_MIN/10, VOLUME_MAX/10, -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},
};
static bool is_muted = false;
/* convert tenth of dB volume to master volume register value */
int tenthdb2master(int db)
{
/* 0 to -63.0dB in 1dB steps, tsc2100 can goto -63.5 in 0.5dB steps */
if (db < VOLUME_MIN) {
return 0x7E;
} else if (db >= VOLUME_MAX) {
return 0x00;
} else {
return(-((db)/5)); /* VOLUME_MIN is negative */
}
}
int sound_val2phys(int setting, int value)
{
int result;
switch(setting)
{
#if 0
case SOUND_LEFT_GAIN:
case SOUND_RIGHT_GAIN:
case SOUND_MIC_GAIN:
result = (value - 23) * 15;
break;
#endif
default:
result = value;
break;
}
return result;
}
void audiohw_init(void)
{
short val = tsc2100_readreg(TSAC4_PAGE, TSAC4_ADDRESS);
/* disable DAC PGA soft-stepping */
val |= TSAC4_DASTDP;
tsc2100_writereg(TSAC4_PAGE, TSAC4_ADDRESS, val);
}
void audiohw_postinit(void)
{
audiohw_mute(0);
}
void audiohw_set_master_vol(int vol_l, int vol_r)
{
tsc2100_writereg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS, (short)((vol_l<<8) | vol_r) );
}
void audiohw_mute(bool mute)
{
short vol = tsc2100_readreg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS);
/* left mute bit == 1<<15
right mute bit == 1<<7
*/
if (mute)
{
vol |= (1<<15)|(1<<7);
} else
{
vol &= ~((1<<15)|(1<<7));
}
is_muted = mute;
tsc2100_writereg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS, vol);
}
void audiohw_close(void)
{
/* mute headphones */
audiohw_mute(true);
}
void audiohw_set_frequency(int fsel)
{
(void)fsel;
}
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