113 lines
3.0 KiB
C
113 lines
3.0 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) 2021 Aidan MacDonald
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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 "power.h"
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#include "adc.h"
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#include "system.h"
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#include "kernel.h"
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#ifdef HAVE_USB_CHARGING_ENABLE
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# include "usb_core.h"
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#endif
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#include "axp-pmu.h"
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#include "i2c-x1000.h"
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#include "gpio-x1000.h"
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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3470
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};
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/* the OF shuts down at this voltage */
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const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
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{
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3400
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
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const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
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{
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{ 3400, 3639, 3697, 3723, 3757, 3786, 3836, 3906, 3980, 4050, 4159 }
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
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const unsigned short percent_to_volt_charge[11] =
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{
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3485, 3780, 3836, 3857, 3890, 3930, 3986, 4062, 4158, 4185, 4196
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};
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#define AXP_IRQ_PORT GPIO_B
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#define AXP_IRQ_PIN (1 << 10)
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void power_init(void)
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{
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/* Initialize driver */
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i2c_x1000_set_freq(2, I2C_FREQ_400K);
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axp_init();
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/* Set lowest sample rate */
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axp_adc_set_rate(AXP_ADC_RATE_25HZ);
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/* Ensure battery voltage ADC is enabled */
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int bits = axp_adc_get_enabled();
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bits |= (1 << ADC_BATTERY_VOLTAGE);
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axp_adc_set_enabled(bits);
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/* Turn on all power outputs */
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i2c_reg_modify1(AXP_PMU_BUS, AXP_PMU_ADDR,
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AXP_REG_PWROUTPUTCTRL2, 0, 0x5f, NULL);
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i2c_reg_modify1(AXP_PMU_BUS, AXP_PMU_ADDR,
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AXP_REG_DCDCWORKINGMODE, 0, 0xc0, NULL);
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/* Set the default charging current. This is the same as the
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* OF's setting, although it's not strictly within the USB spec. */
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axp_set_charge_current(780);
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/* Short delay to give power outputs time to stabilize */
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mdelay(5);
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}
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#ifdef HAVE_USB_CHARGING_ENABLE
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void usb_charging_maxcurrent_change(int maxcurrent)
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{
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axp_set_charge_current(maxcurrent);
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}
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#endif
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void adc_init(void)
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{
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}
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void power_off(void)
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{
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axp_power_off();
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while(1);
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}
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bool charging_state(void)
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{
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return axp_battery_status() == AXP_BATT_CHARGING;
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}
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int _battery_voltage(void)
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{
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return axp_adc_read(ADC_BATTERY_VOLTAGE);
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}
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