6c97145e7d
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31396 a1c6a512-1295-4272-9138-f99709370657
142 lines
3.6 KiB
C
142 lines
3.6 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 TSC2100 audio codec
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*
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* Copyright (c) 2008 Jonathan Gordon
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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 "cpu.h"
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#include "debug.h"
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#include "system.h"
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#include "audio.h"
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#include "audiohw.h"
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#include "sound.h"
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#include "tsc2100.h"
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const struct sound_settings_info audiohw_settings[] = {
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[SOUND_VOLUME] = {"dB", 0, 1, VOLUME_MIN/10, VOLUME_MAX/10, -25},
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/* HAVE_SW_TONE_CONTROLS */
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[SOUND_BASS] = {"dB", 0, 1, -24, 24, 0},
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[SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0},
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[SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0},
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[SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0},
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[SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100},
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};
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static bool is_muted = false;
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/* convert tenth of dB volume to master volume register value */
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int tenthdb2master(int db)
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{
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/* 0 to -63.0dB in 1dB steps, tsc2100 can goto -63.5 in 0.5dB steps */
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if (db < VOLUME_MIN) {
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return 0x7E;
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} else if (db >= VOLUME_MAX) {
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return 0x00;
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} else {
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return(-((db)/5)); /* VOLUME_MIN is negative */
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}
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}
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int sound_val2phys(int setting, int value)
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{
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int result;
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switch(setting)
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{
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#if 0
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case SOUND_LEFT_GAIN:
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case SOUND_RIGHT_GAIN:
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case SOUND_MIC_GAIN:
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result = (value - 23) * 15;
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break;
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#endif
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default:
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result = value;
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break;
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}
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return result;
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}
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void audiohw_init(void)
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{
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short val = tsc2100_readreg(TSAC4_PAGE, TSAC4_ADDRESS);
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/* disable DAC PGA soft-stepping */
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val |= TSAC4_DASTDP;
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tsc2100_writereg(TSAC4_PAGE, TSAC4_ADDRESS, val);
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}
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static void audiohw_mute(bool mute)
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{
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short vol = tsc2100_readreg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS);
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/* left mute bit == 1<<15
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right mute bit == 1<<7
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*/
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if (mute)
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{
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vol |= (1<<15)|(1<<7);
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} else
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{
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vol &= ~((1<<15)|(1<<7));
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}
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is_muted = mute;
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tsc2100_writereg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS, vol);
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}
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void audiohw_postinit(void)
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{
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audiohw_mute(false);
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}
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void audiohw_set_master_vol(int vol_l, int vol_r)
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{
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tsc2100_writereg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS, (short)((vol_l<<8) | vol_r) );
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}
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void audiohw_close(void)
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{
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/* mute headphones */
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audiohw_mute(true);
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}
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void audiohw_set_frequency(int fsel)
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{
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int reg_val;
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reg_val = tsc2100_readreg(CONTROL_PAGE2, TSAC1_ADDRESS);
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reg_val &= ~(0x07<<3);
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switch(fsel)
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{
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case HW_FREQ_8:
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reg_val |= (0x06<<3);
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break;
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case HW_FREQ_11:
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reg_val |= (0x04<<3);
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break;
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case HW_FREQ_22:
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reg_val |= (0x02<<3);
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break;
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case HW_FREQ_44:
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default:
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break;
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}
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tsc2100_writereg(CONTROL_PAGE2, TSAC1_ADDRESS, reg_val);
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}
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