7cfd418a9b
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23120 a1c6a512-1295-4272-9138-f99709370657
103 lines
3 KiB
C
103 lines
3 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) 2008 by Rob Purchase
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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 "pcf50606.h"
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#include "i2c.h"
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#define PCF50606_ADDR 0x10
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int pcf50606_write(int address, unsigned char val)
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{
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unsigned char data[] = { address, val };
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return i2c_write(PCF50606_ADDR, data, 2);
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}
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int pcf50606_write_multiple(int address, const unsigned char* buf, int count)
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{
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int i;
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for (i = 0; i < count; i++)
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pcf50606_write(address + i, buf[i]);
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return 0;
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}
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int pcf50606_read(int address)
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{
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unsigned char val = -1;
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i2c_readmem(PCF50606_ADDR, address, &val, 1);
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return val;
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}
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int pcf50606_read_multiple(int address, unsigned char* buf, int count)
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{
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return i2c_readmem(PCF50606_ADDR, address, buf, count);
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}
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void pcf50606_init(void)
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{
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#ifdef COWON_D2
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/* Set outputs as per OF - further investigation required. */
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static const char init_data[] =
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{PCF5060X_DCDEC1, 0xe4,
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PCF5060X_IOREGC, 0xf5,
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PCF5060X_D1REGC1, 0xf5,
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PCF5060X_D2REGC1, 0xe9,
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PCF5060X_D3REGC1, 0xf8, /* WM8985 3.3v */
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PCF5060X_DCUDC1, 0xe7,
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PCF5060X_LPREGC1, 0x0,
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PCF5060X_LPREGC2, 0x2,
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0};
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const char* ptr;
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for (ptr = init_data; *ptr != 0; ptr += 2)
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pcf50606_write(ptr[0], ptr[1]);
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#endif
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}
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void pcf50606_reset_timeout(void)
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{
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int level = disable_irq_save();
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pcf50606_write(PCF5060X_OOCC1, pcf50606_read(PCF5060X_OOCC1) | TOTRST);
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restore_irq(level);
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}
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void pcf50606_read_adc(int adc, short* res1, short* res2)
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{
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int adcs1 = 0, adcs2 = 0, adcs3 = 0;
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int level = disable_irq_save();
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pcf50606_write(PCF5060X_ADCC2, (adc<<1) | 1); /* ADC start */
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do {
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adcs2 = pcf50606_read(PCF5060X_ADCS2);
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} while (!(adcs2 & 0x80)); /* Busy wait on ADCRDY flag */
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adcs1 = pcf50606_read(PCF5060X_ADCS1);
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if (res2 != NULL) adcs3 = pcf50606_read(PCF5060X_ADCS3);
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pcf50606_write(PCF5060X_ADCC2, 0); /* ADC stop */
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restore_interrupt(level);
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if (res1 != NULL) *res1 = (adcs1 << 2) | (adcs2 & 3);
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if (res2 != NULL) *res2 = (adcs3 << 2) | ((adcs2 & 0xC) >> 2);
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}
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