0c7b787398
This is going right in since it's long overdue. If anything is goofed, drop me a line or just tweak it yourself if you know what's wrong. :-) Make HW/SW codec interface more uniform when emulating HW functionality on SWCODEC for functions such as "audiohw_set_pitch". The firmware-to- DSP plumbing is in firmware/drivers/audiohw-swcodec.c. "sound_XXX" APIs are all in sound.c with none in DSP code any longer. Reduce number of settings definitions needed by each codec by providing defaults for common ones like balance, channels and SW tone controls. Remove need for separate SIM code and tables and add virtual codec header for hosted targets. Change-Id: I3f23702bca054fc9bda40f49824ce681bb7f777b
115 lines
2.9 KiB
C
115 lines
2.9 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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static bool is_muted = false;
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/* convert tenth of dB volume to volume register value */
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static int vol_tenthdb2hw(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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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_volume(int vol_l, int vol_r)
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{
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vol_l = vol_tenthdb2hw(vol_l);
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vol_r = vol_tenthdb2hw(vol_r);
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tsc2100_writereg(TSDACGAIN_PAGE, TSDACGAIN_ADDRESS,
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(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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