50c547c640
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29220 a1c6a512-1295-4272-9138-f99709370657
141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* 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);
|
|
}
|
|
|
|
static 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_postinit(void)
|
|
{
|
|
audiohw_mute(false);
|
|
}
|
|
|
|
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_close(void)
|
|
{
|
|
/* mute headphones */
|
|
audiohw_mute(true);
|
|
}
|
|
|
|
void audiohw_set_frequency(int fsel)
|
|
{
|
|
int reg_val;
|
|
reg_val = tsc2100_readreg(CONTROL_PAGE2, TSAC1_ADDRESS);
|
|
|
|
reg_val &= ~(0x07<<3);
|
|
|
|
switch(fsel)
|
|
{
|
|
case HW_FREQ_8:
|
|
reg_val |= (0x06<<3);
|
|
break;
|
|
case HW_FREQ_11:
|
|
reg_val |= (0x04<<3);
|
|
break;
|
|
case HW_FREQ_22:
|
|
reg_val |= (0x02<<3);
|
|
break;
|
|
case HW_FREQ_44:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
tsc2100_writereg(CONTROL_PAGE2, TSAC1_ADDRESS, reg_val);
|
|
}
|