// SPDX-License-Identifier: GPL-2.0-only /* * axp288_fuel_gauge.c - Xpower AXP288 PMIC Fuel Gauge Driver * * Copyright (C) 2020-2021 Andrejus Basovas <[email protected]> * Copyright (C) 2016-2021 Hans de Goede <[email protected]> * Copyright (C) 2014 Intel Corporation * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include <linux/acpi.h> #include <linux/dmi.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/device.h> #include <linux/regmap.h> #include <linux/jiffies.h> #include <linux/interrupt.h> #include <linux/mfd/axp20x.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/iio/consumer.h> #include <asm/unaligned.h> #include <asm/iosf_mbi.h> #define PS_STAT_VBUS_TRIGGER … #define PS_STAT_BAT_CHRG_DIR … #define PS_STAT_VBAT_ABOVE_VHOLD … #define PS_STAT_VBUS_VALID … #define PS_STAT_VBUS_PRESENT … #define CHRG_STAT_BAT_SAFE_MODE … #define CHRG_STAT_BAT_VALID … #define CHRG_STAT_BAT_PRESENT … #define CHRG_STAT_CHARGING … #define CHRG_STAT_PMIC_OTP … #define CHRG_CCCV_CC_MASK … #define CHRG_CCCV_CC_BIT_POS … #define CHRG_CCCV_CC_OFFSET … #define CHRG_CCCV_CC_LSB_RES … #define CHRG_CCCV_ITERM_20P … #define CHRG_CCCV_CV_MASK … #define CHRG_CCCV_CV_BIT_POS … #define CHRG_CCCV_CV_4100MV … #define CHRG_CCCV_CV_4150MV … #define CHRG_CCCV_CV_4200MV … #define CHRG_CCCV_CV_4350MV … #define CHRG_CCCV_CHG_EN … #define FG_CNTL_OCV_ADJ_STAT … #define FG_CNTL_OCV_ADJ_EN … #define FG_CNTL_CAP_ADJ_STAT … #define FG_CNTL_CAP_ADJ_EN … #define FG_CNTL_CC_EN … #define FG_CNTL_GAUGE_EN … #define FG_15BIT_WORD_VALID … #define FG_15BIT_VAL_MASK … #define FG_REP_CAP_VALID … #define FG_REP_CAP_VAL_MASK … #define FG_DES_CAP1_VALID … #define FG_DES_CAP_RES_LSB … #define FG_DES_CC_RES_LSB … #define FG_OCV_CAP_VALID … #define FG_OCV_CAP_VAL_MASK … #define FG_CC_CAP_VALID … #define FG_CC_CAP_VAL_MASK … #define FG_LOW_CAP_THR1_MASK … #define FG_LOW_CAP_THR1_VAL … #define FG_LOW_CAP_THR2_MASK … #define FG_LOW_CAP_WARN_THR … #define FG_LOW_CAP_CRIT_THR … #define FG_LOW_CAP_SHDN_THR … #define DEV_NAME … /* 1.1mV per LSB expressed in uV */ #define VOLTAGE_FROM_ADC(a) … /* properties converted to uV, uA */ #define PROP_VOLT(a) … #define PROP_CURR(a) … #define AXP288_REG_UPDATE_INTERVAL … #define AXP288_FG_INTR_NUM … #define AXP288_QUIRK_NO_BATTERY … static bool no_current_sense_res; module_param(no_current_sense_res, bool, 0444); MODULE_PARM_DESC(…) …; enum { … }; enum { … }; struct axp288_fg_info { … }; static enum power_supply_property fuel_gauge_props[] = …; static int fuel_gauge_reg_readb(struct axp288_fg_info *info, int reg) { … } static int fuel_gauge_reg_writeb(struct axp288_fg_info *info, int reg, u8 val) { … } static int fuel_gauge_read_15bit_word(struct axp288_fg_info *info, int reg) { … } static int fuel_gauge_read_12bit_word(struct axp288_fg_info *info, int reg) { … } static int fuel_gauge_update_registers(struct axp288_fg_info *info) { … } static void fuel_gauge_get_status(struct axp288_fg_info *info) { … } static int fuel_gauge_battery_health(struct axp288_fg_info *info) { … } static int fuel_gauge_get_property(struct power_supply *ps, enum power_supply_property prop, union power_supply_propval *val) { … } static int fuel_gauge_set_property(struct power_supply *ps, enum power_supply_property prop, const union power_supply_propval *val) { … } static int fuel_gauge_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { … } static irqreturn_t fuel_gauge_thread_handler(int irq, void *dev) { … } static void fuel_gauge_external_power_changed(struct power_supply *psy) { … } static struct power_supply_desc fuel_gauge_desc = …; /* * Some devices have no battery (HDMI sticks) and the axp288 battery's * detection reports one despite it not being there. * Please keep this listed sorted alphabetically. */ static const struct dmi_system_id axp288_quirks[] = …; static int axp288_fuel_gauge_read_initial_regs(struct axp288_fg_info *info) { … } static void axp288_fuel_gauge_release_iio_chans(void *data) { … } static int axp288_fuel_gauge_probe(struct platform_device *pdev) { … } static const struct platform_device_id axp288_fg_id_table[] = …; MODULE_DEVICE_TABLE(platform, axp288_fg_id_table); static struct platform_driver axp288_fuel_gauge_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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