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121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/*
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* Battery charger driver for Nintendo Switch's TI BQ24193
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*
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* Copyright (c) 2018 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __BQ24193_H_
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#define __BQ24193_H_
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#define BQ24193_I2C_ADDR 0x6B
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// REG 0 masks.
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#define BQ24193_INCONFIG_INLIMIT_MASK (7<<0)
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#define BQ24193_INCONFIG_VINDPM_MASK 0x78
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#define BQ24193_INCONFIG_HIZ_EN_MASK (1<<7)
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// REG 1 masks.
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#define BQ24193_PORCONFIG_BOOST_MASK (1<<0)
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#define BQ24193_PORCONFIG_SYSMIN_MASK (7<<1) // 3000uV HOS default.
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#define BQ24193_PORCONFIG_CHGCONFIG_MASK (3<<4)
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#define BQ24193_PORCONFIG_CHGCONFIG_CHARGER_EN (1<<4)
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#define BQ24193_PORCONFIG_I2CWATCHDOG_MASK (1<<6)
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#define BQ24193_PORCONFIG_RESET_MASK (1<<7)
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// REG 2 masks.
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#define BQ24193_CHRGCURR_20PCT_MASK (1<<0)
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#define BQ24193_CHRGCURR_ICHG_MASK 0xFC
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// REG 3 masks.
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#define BQ24193_PRECHRG_ITERM 0x0F
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#define BQ24193_PRECHRG_IPRECHG 0xF0
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// REG 4 masks.
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#define BQ24193_CHRGVOLT_VTHRES (1<<0)
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#define BQ24193_CHRGVOLT_BATTLOW (1<<1)
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#define BQ24193_CHRGVOLT_VREG 0xFC
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// REG 5 masks.
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#define BQ24193_CHRGTERM_ISET_MASK (1<<0)
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#define BQ24193_CHRGTERM_CHGTIMER_MASK (3<<1)
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#define BQ24193_CHRGTERM_ENTIMER_MASK (1<<3)
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#define BQ24193_CHRGTERM_WATCHDOG_MASK (3<<4)
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#define BQ24193_CHRGTERM_TERM_ST_MASK (1<<6)
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#define BQ24193_CHRGTERM_TERM_EN_MASK (1<<7)
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// REG 6 masks.
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#define BQ24193_IRTHERMAL_THERM_MASK (3<<0)
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#define BQ24193_IRTHERMAL_VCLAMP_MASK (7<<2)
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#define BQ24193_IRTHERMAL_BATTCOMP_MASK (7<<5)
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// REG 7 masks.
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#define BQ24193_MISC_INT_MASK (3<<0)
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#define BQ24193_MISC_VSET_MASK (1<<4)
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#define BQ24193_MISC_BATFET_DI_MASK (1<<5)
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#define BQ24193_MISC_TMR2X_EN_MASK (1<<6)
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#define BQ24193_MISC_DPDM_EN_MASK (1<<7)
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// REG 8 masks.
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#define BQ24193_STATUS_VSYS_MASK (1<<0)
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#define BQ24193_STATUS_THERM_MASK (1<<1)
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#define BQ24193_STATUS_PG_MASK (1<<2)
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#define BQ24193_STATUS_DPM_MASK (1<<3)
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#define BQ24193_STATUS_CHRG_MASK (3<<4)
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#define BQ24193_STATUS_VBUS_MASK (3<<6)
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// REG 9 masks.
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#define BQ24193_FAULT_THERM_MASK (7<<0)
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#define BQ24193_FAULT_BATT_OVP_MASK (1<<3)
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#define BQ24193_FAULT_CHARGE_MASK (3<<4)
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#define BQ24193_FAULT_BOOST_MASK (1<<6)
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#define BQ24193_FAULT_WATCHDOG_MASK (1<<7)
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// REG A masks.
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#define BQ24193_VENDORPART_DEV_MASK (3<<0)
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#define BQ24193_VENDORPART_PN_MASK (7<<3)
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enum BQ24193_reg {
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BQ24193_InputSource = 0x00,
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BQ24193_PORConfig = 0x01,
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BQ24193_ChrgCurr = 0x02,
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BQ24193_PreChrgTerm = 0x03,
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BQ24193_ChrgVolt = 0x04,
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BQ24193_ChrgTermTimer = 0x05,
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BQ24193_IRCompThermal = 0x06,
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BQ24193_Misc = 0x07,
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BQ24193_Status = 0x08,
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BQ24193_FaultReg = 0x09,
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BQ24193_VendorPart = 0x0A,
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};
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enum BQ24193_reg_prop {
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BQ24193_InputVoltageLimit, // REG 0.
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BQ24193_InputCurrentLimit, // REG 0.
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BQ24193_SystemMinimumVoltage, // REG 1.
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BQ24193_FastChargeCurrentLimit, // REG 2.
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BQ24193_ChargeVoltageLimit, // REG 4.
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BQ24193_RechargeThreshold, // REG 4.
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BQ24193_ThermalRegulation, // REG 6.
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BQ24193_ChargeStatus, // REG 8.
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BQ24193_TempStatus, // REG 9.
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BQ24193_DevID, // REG A.
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BQ24193_ProductNumber, // REG A.
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};
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int bq24193_get_property(enum BQ24193_reg_prop prop, int *value);
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void bq24193_enable_charger();
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void bq24193_fake_battery_removal();
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#endif /* __BQ24193_H_ */
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