forked from len0rd/rockbox
2acc0ac542
later. We still need to hunt down snippets used that are not. 1324 modified files... http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
120 lines
3.9 KiB
C
120 lines
3.9 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 pcf50605 PMU and RTC
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*
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* Based on code from the ipodlinux project - http://ipodlinux.org/
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* Adapted for Rockbox in December 2005
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*
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* Original file: linux/arch/armnommu/mach-ipod/pcf50605.c
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*
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* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
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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 "config.h"
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#if CONFIG_I2C == I2C_PP5020 || CONFIG_I2C == I2C_PP5002
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#include "i2c-pp.h"
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#endif
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#include "rtc.h"
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#include "pcf5060x.h"
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unsigned char pcf50605_wakeup_flags = 0;
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int pcf50605_read(int address)
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{
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return i2c_readbyte(0x8,address);
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}
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int pcf50605_read_multiple(int address, unsigned char* buf, int count)
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{
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int read = i2c_readbytes(0x08, address, count, buf);
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return read - count;
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}
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int pcf50605_write(int address, unsigned char val)
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{
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pp_i2c_send(0x8, address, val);
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return 0;
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}
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int pcf50605_write_multiple(int address, const unsigned char* buf, int count)
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{
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int i;
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i2c_lock();
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for (i = 0; i < count; i++)
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pp_i2c_send(0x8, address + i, buf[i]);
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i2c_unlock();
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return 0;
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}
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/* The following command puts the iPod into a deep sleep. Warning
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from the good people of ipodlinux - never issue this command
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without setting CHGWAK or EXTONWAK if you ever want to be able to
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power on your iPod again. */
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void pcf50605_standby_mode(void)
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{
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pcf50605_write(PCF5060X_OOCC1,
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GOSTDBY | CHGWAK | EXTONWAK | pcf50605_wakeup_flags);
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}
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void pcf50605_init(void)
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{
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#if (defined (IPOD_VIDEO) || defined (IPOD_NANO))
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/* I/O and GPO voltage supply. ECO not allowed regarding data sheet. Defaults:
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* iPod Video = 0xf8 = 3.3V ON
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* iPod nano = 0xf5 = 3.0V ON */
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pcf50605_write(PCF5060X_IOREGC, 0xf5); /* 3.0V ON */
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/* Core voltage supply. ECO not stable, assumed due to less precision of
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* voltage in ECO mode. DCDC2 is not relevant as this may be used for
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* voltage scaling. Default is 1.2V ON for PP5022/PP5024 */
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pcf50605_write(PCF5060X_DCDC1, 0xec); /* 1.2V ON */
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pcf50605_write(PCF5060X_DCDC2, 0x0c); /* OFF */
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/* Unknown. Defaults:
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* iPod Video = 0xe3 = 1.8V ON
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* iPod nano = 0xe3 = 1.8V ON */
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pcf50605_write(PCF5060X_DCUDC1, 0xe3); /* 1.8V ON */
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/* Codec voltage supply. ECO not allowed as max. current of 5mA is not
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* sufficient. Defaults:
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* iPod Video = 0xf5 = 3.0V ON
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* iPod nano = 0xef = 2.4V ON */
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pcf50605_write(PCF5060X_D1REGC1, 0xf0); /* 2.5V ON */
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/* PCF5060X_D2REGC1 is set in accordance to the accessory power setting */
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/* LCD voltage supply. Defaults:
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* iPod Video = 0xf5 = 3.0V ON
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* iPod nano = 0xf5 = 3.0V ON */
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pcf50605_write(PCF5060X_D3REGC1, 0xf1); /* 2.6V ON */
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/* PCF5060X_LPREGC1 is leaved untouched as the setting varies over the
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* different iPod platforms. Defaults:
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* iPod Video = 0x1f = 0ff
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* iPod nano = 0xf6 = 3.1V ON */
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#else
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/* keep initialization from svn for other iPods */
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pcf50605_write(PCF5060X_D1REGC1, 0xf5); /* 3.0V ON */
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pcf50605_write(PCF5060X_D3REGC1, 0xf5); /* 3.0V ON */
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#endif
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}
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