eb369bf50f
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22588 a1c6a512-1295-4272-9138-f99709370657
107 lines
2.6 KiB
C
107 lines
2.6 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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* Copyright (c) 2009 Mark Arigo
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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 "system.h"
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#include "audiohw.h"
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#include "i2c-pp.h"
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#include "i2s.h"
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#include "akcodec.h"
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// #define LOGF_ENABLE
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#include "logf.h"
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#define I2C_AUDIO_ADDRESS 0x10
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/*
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* Initialise the PP I2C and I2S.
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*/
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void audiohw_init(void)
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{
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unsigned long tmp;
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logf("audiohw_init");
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/* I2S device enable */
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DEV_EN |= (DEV_I2S | DEV_EXTCLOCKS);
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/* I2S device reset */
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DEV_RS |= DEV_I2S;
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asm volatile ("nop\n");
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DEV_RS &= ~DEV_I2S;
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DEV_INIT1 &= ~0x3000000;
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tmp = DEV_INIT1;
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DEV_INIT1 = tmp;
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DEV_INIT2 &= ~0x100;
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/* reset the I2S controller into known state */
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i2s_reset();
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/* this gpio pin maybe powers the codec chip */
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GPIOB_ENABLE |= 0x01;
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GPIOB_OUTPUT_EN |= 0x01;
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GPIOB_OUTPUT_VAL |= 0x01;
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GPIOL_ENABLE |= 0x20;
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GPIOL_OUTPUT_VAL &= ~0x20;
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GPIOL_OUTPUT_EN |= 0x20;
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#ifdef SAMSUNG_YH920
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GPO32_ENABLE |= 0x00000002;
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GPO32_VAL &= ~0x00000002;
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#endif
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GPO32_VAL |= 0x00000020;
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GPO32_ENABLE |= 0x00000020;
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GPIOF_ENABLE |= 0x80;
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GPIOF_OUTPUT_VAL |= 0x80;
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GPIOF_OUTPUT_EN |= 0x80;
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audiohw_preinit();
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GPIOL_ENABLE |= 0x20;
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GPIOL_OUTPUT_VAL |= 0x20;
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GPIOL_OUTPUT_EN |= 0x20;
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}
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void akcodec_close(void)
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{
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GPIOF_ENABLE |= 0x80;
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GPIOF_OUTPUT_VAL &= ~0x80;
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GPIOF_OUTPUT_EN |= 0x80;
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GPIOB_ENABLE |= 0x01;
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GPIOB_OUTPUT_EN |= 0x01;
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GPIOB_OUTPUT_VAL |= 0x01;
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}
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void akcodec_write(int reg, int data)
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{
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pp_i2c_send(I2C_AUDIO_ADDRESS, reg, data);
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}
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int akcodec_read(int reg)
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{
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return i2c_readbyte(I2C_AUDIO_ADDRESS, reg);
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}
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