129 lines
2.9 KiB
C
129 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 AS3514 audio codec
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*
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* Copyright (c) 2007 Daniel Ankers
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* Copyright (c) 2007 Christian Gmeiner
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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 "system.h"
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#include "audiohw.h"
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#include "i2s.h"
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#include "i2c-pp.h"
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#include "ascodec.h"
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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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/* normal outputs for CDI and I2S pin groups */
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DEV_INIT2 &= ~0x300;
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/*mini2?*/
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DEV_INIT1 &=~0x3000000;
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/*mini2?*/
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/* I2S device reset */
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DEV_RS |= DEV_I2S;
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DEV_RS &=~DEV_I2S;
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/* I2S device enable */
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DEV_EN |= DEV_I2S;
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/* enable external dev clock clocks */
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DEV_EN |= DEV_EXTCLOCKS;
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/* external dev clock to 24MHz */
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outl(inl(0x70000018) & ~0xc, 0x70000018);
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#ifdef SANSA_E200
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/* Prevent pops on startup */
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GPIOG_ENABLE |= 0x08;
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GPIO_SET_BITWISE(GPIOG_OUTPUT_VAL, 0x08);
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GPIOG_OUTPUT_EN |= 0x08;
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#endif
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i2s_reset();
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audiohw_preinit();
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}
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void ascodec_write(unsigned int reg, unsigned int value)
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{
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pp_i2c_send(AS3514_I2C_ADDR, reg, value);
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}
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int ascodec_read(unsigned int reg)
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{
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return i2c_readbyte(AS3514_I2C_ADDR, reg);
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}
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void ascodec_readbytes(unsigned int addr, unsigned int len, unsigned char *data)
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{
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i2c_readbytes(AS3514_I2C_ADDR, addr, len, data);
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}
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void ascodec_lock(void)
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{
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i2c_lock();
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}
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void ascodec_unlock(void)
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{
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i2c_unlock();
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}
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bool ascodec_chg_status(void)
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{
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return ascodec_read(AS3514_IRQ_ENRD0) & CHG_STATUS;
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}
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bool ascodec_endofch(void)
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{
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return ascodec_read(AS3514_IRQ_ENRD0) & CHG_ENDOFCH;
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}
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void ascodec_monitor_endofch(void)
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{
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ascodec_write(AS3514_IRQ_ENRD0, IRQ_ENDOFCH);
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}
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void ascodec_write_charger(int value)
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{
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ascodec_write(AS3514_CHARGER, value);
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}
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int ascodec_read_charger(void)
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{
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return ascodec_read(AS3514_CHARGER);
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}
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void ascodec_wait_adc_finished(void)
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{
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/*
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* FIXME: not implemented
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*
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* If irqs are not available on the target platform,
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* this should be most likely implemented by polling
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* AS3514_IRQ_ENRD2 in the same way powermgmt-ascodec.c
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* is polling IRQ_ENDOFCH.
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*/
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}
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