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
2.8 KiB
C
115 lines
2.8 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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* Copyright (C) 2002 by Linus Nielsen Feltzing
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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 "config.h"
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#include "stdbool.h"
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#include "i2c.h"
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#include "debug.h"
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#include "dac3550a.h"
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static bool line_in_enabled = false;
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static bool dac_enabled = false;
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int dac_volume(unsigned int left, unsigned int right, bool deemph)
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{
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int ret = 0;
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unsigned char buf[3];
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i2c_begin();
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if (left > 0x38)
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left = 0x38;
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if (right > 0x38)
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right = 0x38;
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buf[0] = DAC_REG_WRITE | DAC_AVOL;
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buf[1] = (left & 0x3f) | (deemph ? 0x40 : 0);
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buf[2] = right & 0x3f;
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/* send write command */
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if (i2c_write(DAC_DEV_WRITE,buf,3))
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{
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ret = -1;
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}
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i2c_end();
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return ret;
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}
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/******************************************************************
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** Bit6: 0 = 3V 1 = 5V
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** Bit5: 0 = normal 1 = low power
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** Bit4: 0 = AUX2 off 1 = AUX2 on
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** Bit3: 0 = AUX1 off 1 = AUX1 on
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** Bit2: 0 = DAC off 1 = DAC on
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** Bit1: 0 = stereo 1 = mono
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** Bit0: 0 = normal right amp 1 = inverted right amp
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******************************************************************/
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/* dac_config is called once to initialize it. we will apply
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our static settings because of the init flow.
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dac_init -> dac_line_in -> mpeg_init -> dac_config
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*/
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static int dac_config(void)
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{
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int ret = 0;
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unsigned char buf[2];
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i2c_begin();
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buf[0] = DAC_REG_WRITE | DAC_GCFG;
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buf[1] = (dac_enabled ? 0x04 : 0) |
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(line_in_enabled ? 0x08 : 0);
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/* send write command */
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if (i2c_write(DAC_DEV_WRITE,buf,2))
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{
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ret = -1;
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}
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i2c_end();
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return ret;
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}
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void dac_enable(bool enable)
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{
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dac_enabled = enable;
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dac_config();
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}
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void dac_line_in(bool enable)
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{
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line_in_enabled = enable;
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dac_config();
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}
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void dac_init(void)
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{
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unsigned char buf[2];
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i2c_begin();
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buf[0] = DAC_REG_WRITE | DAC_SR_REG;
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buf[1] = 0x07;
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/* send write command */
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i2c_write(DAC_DEV_WRITE,buf,2);
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i2c_end();
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}
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