469d645390
When the bootloader starts only IRAM is available, the first task is to ask the PMU to verify if the iPod has previously been hibernated by OF. Due to memory limitations, the kernel cannot be used on this stage. This patch modifies I2C and PMU low level functions to not to depend on kernel (removes mutexes, and uses HW timer instead of current_tick), actual kernel functions are modified to be 'mutexed' wrappers of the new functions. Change-Id: I7cef9e95dedaf176dc0659315f3dc33166d5b116
87 lines
3 KiB
C
87 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: pmu-target.h 24721 2010-02-17 15:54:48Z theseven $
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*
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* Copyright © 2009 Michael Sparmann
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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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#ifndef __PMU_TARGET_H__
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#define __PMU_TARGET_H__
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#include <stdbool.h>
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#include "config.h"
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#include "pcf5063x.h"
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/* undocummented PMU registers */
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#define PCF50635_REG_INT6 0x85
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#define PCF50635_REG_INT6M 0x86
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#define PCF50635_REG_GPIOSTAT 0x87 /* bit1: GPIO2 status (TBC) */
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/* LDOs */
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#define LDO_UNK1 1 /* TBC: SoC voltage (USB) */
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#define LDO_UNK2 2 /* TBC: SoC voltage (I/O) */
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#define LDO_LCD 3
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#define LDO_CODEC 4
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#define LDO_UNK5 5 /* TBC: nano3g NAND */
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#define LDO_CWHEEL 6
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#define LDO_ACCY 7 /* HCLDO */
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/* Other LDOs:
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* AUTOLDO: Hard Disk
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* DOWN1: CPU
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* DOWN2: SDRAM
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* MEMLDO: SDRAM self-refresh (TBC)
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*
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* EXTON inputs:
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* EXTON1: button/holdswitch related (TBC)
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* EXTON2: USB Vbus (High when present)
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* EXTON3: ACCESORY (Low when present)
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*
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* GPIO:
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* GPIO1: input, Mikey (jack remote ctrl) interrupt (TBC)
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* GPIO2: input, hold switch (TBC)
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* GPIO3: output, unknown
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*/
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unsigned char pmu_read(int address);
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int pmu_write(int address, unsigned char val);
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int pmu_read_multiple(int address, int count, unsigned char* buffer);
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int pmu_write_multiple(int address, int count, unsigned char* buffer);
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int pmu_read_adc(unsigned int adc);
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int pmu_read_battery_voltage(void);
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int pmu_read_battery_current(void);
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void pmu_init(void);
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void pmu_ldo_on_in_standby(unsigned int ldo, int onoff);
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void pmu_ldo_set_voltage(unsigned int ldo, unsigned char voltage);
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void pmu_ldo_power_on(unsigned int ldo);
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void pmu_ldo_power_off(unsigned int ldo);
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void pmu_set_wake_condition(unsigned char condition);
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void pmu_enter_standby(void);
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void pmu_read_rtc(unsigned char* buffer);
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void pmu_write_rtc(unsigned char* buffer);
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void pmu_hdd_power(bool on);
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#ifdef BOOTLOADER
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unsigned char pmu_rd(int address);
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int pmu_wr(int address, unsigned char val);
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int pmu_rd_multiple(int address, int count, unsigned char* buffer);
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int pmu_wr_multiple(int address, int count, unsigned char* buffer);
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#endif
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#endif /* __PMU_TARGET_H__ */
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