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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Driver for pcf50605 PMU and RTC
*
* Based on code from the ipodlinux project - http://ipodlinux.org/
* Adapted for Rockbox in December 2005
*
* Original file: linux/arch/armnommu/mach-ipod/pcf50605.c
*
* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "system.h"
#include "config.h"
#if CONFIG_I2C == I2C_PP5020 || CONFIG_I2C == I2C_PP5002
#include "i2c-pp.h"
#endif
#include "rtc.h"
#define OOCS 0x01
#define INT1 0x02
#define INT2 0x03
#define INT3 0x04
#define INT1M 0x05
#define INT2M 0x06
#define INT3M 0x07
#define OOCC1 0x08
#define GOSTDBY 0x1
#define TOTRST (0x1 << 1)
#define CLK32ON (0x1 << 2)
#define WDTRST (0x1 << 3)
#define RTCWAK (0x1 << 4)
#define CHGWAK (0x1 << 5)
#define EXTONWAK (0x01 << 6)
#define OOCC2 0x09
#define RTCSC 0x0a
#define RTCMN 0x0b
#define RTCHR 0x0c
#define RTCWD 0x0d
#define RTCDT 0x0e
#define RTCMT 0x0f
#define RTCYR 0x10
#define RTCSCA 0x11
#define RTCMNA 0x12
#define RTCHRA 0x13
#define RTCWDA 0x14
#define RTCDTA 0x15
#define RTCMTA 0x16
#define RTCYRA 0x17
#define PSSC 0x18
#define PWROKM 0x19
#define PWROKS 0x1a
#define D1REGC1 0x24
#define VOUT_3000mV 0xf5
#define VOUT_3300mV 0xf8
#define D2REGC1 0x25
#define D3REGC1 0x26
int pcf50605_read(int address)
{
return i2c_readbyte(0x8,address);
}
int pcf50605_read_multiple(int address, unsigned char* buf, int count)
{
int read = i2c_readbytes(0x08, address, count, buf);
return read - count;
}
int pcf50605_write(int address, unsigned char val)
{
pp_i2c_send(0x8, address, val);
return 0;
}
int pcf50605_write_multiple(int address, const unsigned char* buf, int count)
{
int i;
for (i = 0; i < count; i++)
pp_i2c_send(0x8, address + i, buf[i]);
return 0;
}
/* The following command puts the iPod into a deep sleep. Warning
from the good people of ipodlinux - never issue this command
without setting CHGWAK or EXTONWAK if you ever want to be able to
power on your iPod again. */
void pcf50605_standby_mode(void)
{
const char mask = pcf50605_read(OOCC1) | GOSTDBY | CHGWAK | EXTONWAK;
pcf50605_write(OOCC1, mask);
}
void pcf50605_init(void)
{
/* The following values were taken from the ipodlinux kernel source */
pcf50605_write(D1REGC1, VOUT_3000mV); /* Unknown */
pcf50605_write(D2REGC1, VOUT_3300mV); /* Dock Connector pin 17 */
pcf50605_write(D3REGC1, VOUT_3000mV); /* Unknown */
}
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