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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Rob Purchase
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "pcf50606.h"
#include "i2c.h"
#define PCF50606_ADDR 0x10
int pcf50606_write(int address, unsigned char val)
{
unsigned char data[] = { address, val };
return i2c_write(PCF50606_ADDR, data, 2);
}
int pcf50606_write_multiple(int address, const unsigned char* buf, int count)
{
int i;
for (i = 0; i < count; i++)
pcf50606_write(address + i, buf[i]);
return 0;
}
int pcf50606_read(int address)
{
unsigned char val = -1;
i2c_readmem(PCF50606_ADDR, address, &val, 1);
return val;
}
int pcf50606_read_multiple(int address, unsigned char* buf, int count)
{
return i2c_readmem(PCF50606_ADDR, address, buf, count);
}
void pcf50606_init(void)
{
#ifdef COWON_D2
/* Set outputs as per OF - further investigation required. */
static const char init_data[] =
{PCF5060X_DCDEC1, 0xe4,
PCF5060X_IOREGC, 0xf5,
PCF5060X_D1REGC1, 0xf5,
PCF5060X_D2REGC1, 0xe9,
PCF5060X_D3REGC1, 0xf8, /* WM8985 3.3v */
PCF5060X_DCUDC1, 0xe7,
PCF5060X_LPREGC1, 0x0,
PCF5060X_LPREGC2, 0x2,
0};
const char* ptr;
for (ptr = init_data; *ptr != 0; ptr += 2)
pcf50606_write(ptr[0], ptr[1]);
#endif
}
void pcf50606_reset_timeout(void)
{
int level = disable_irq_save();
pcf50606_write(PCF5060X_OOCC1, pcf50606_read(PCF5060X_OOCC1) | TOTRST);
restore_irq(level);
}
void pcf50606_read_adc(int adc, short* res1, short* res2)
{
int adcs1 = 0, adcs2 = 0, adcs3 = 0;
int level = disable_irq_save();
pcf50606_write(PCF5060X_ADCC2, (adc<<1) | 1); /* ADC start */
do {
adcs2 = pcf50606_read(PCF5060X_ADCS2);
} while (!(adcs2 & 0x80)); /* Busy wait on ADCRDY flag */
adcs1 = pcf50606_read(PCF5060X_ADCS1);
if (res2 != NULL) adcs3 = pcf50606_read(PCF5060X_ADCS3);
pcf50606_write(PCF5060X_ADCC2, 0); /* ADC stop */
restore_interrupt(level);
if (res1 != NULL) *res1 = (adcs1 << 2) | (adcs2 & 3);
if (res2 != NULL) *res2 = (adcs3 << 2) | ((adcs2 & 0xC) >> 2);
}
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