// SPDX-License-Identifier: GPL-2.0-or-later /* * DA9150 Fuel-Gauge Driver * * Copyright (c) 2015 Dialog Semiconductor * * Author: Adam Thomson <[email protected]> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/power_supply.h> #include <linux/list.h> #include <asm/div64.h> #include <linux/mfd/da9150/core.h> #include <linux/mfd/da9150/registers.h> #include <linux/devm-helpers.h> /* Core2Wire */ #define DA9150_QIF_READ … #define DA9150_QIF_WRITE … #define DA9150_QIF_CODE_MASK … #define DA9150_QIF_BYTE_SIZE … #define DA9150_QIF_BYTE_MASK … #define DA9150_QIF_SHORT_SIZE … #define DA9150_QIF_LONG_SIZE … /* QIF Codes */ #define DA9150_QIF_UAVG … #define DA9150_QIF_UAVG_SIZE … #define DA9150_QIF_IAVG … #define DA9150_QIF_IAVG_SIZE … #define DA9150_QIF_NTCAVG … #define DA9150_QIF_NTCAVG_SIZE … #define DA9150_QIF_SHUNT_VAL … #define DA9150_QIF_SHUNT_VAL_SIZE … #define DA9150_QIF_SD_GAIN … #define DA9150_QIF_SD_GAIN_SIZE … #define DA9150_QIF_FCC_MAH … #define DA9150_QIF_FCC_MAH_SIZE … #define DA9150_QIF_SOC_PCT … #define DA9150_QIF_SOC_PCT_SIZE … #define DA9150_QIF_CHARGE_LIMIT … #define DA9150_QIF_CHARGE_LIMIT_SIZE … #define DA9150_QIF_DISCHARGE_LIMIT … #define DA9150_QIF_DISCHARGE_LIMIT_SIZE … #define DA9150_QIF_FW_MAIN_VER … #define DA9150_QIF_FW_MAIN_VER_SIZE … #define DA9150_QIF_E_FG_STATUS … #define DA9150_QIF_E_FG_STATUS_SIZE … #define DA9150_QIF_SYNC … #define DA9150_QIF_SYNC_SIZE … #define DA9150_QIF_MAX_CODES … /* QIF Sync Timeout */ #define DA9150_QIF_SYNC_TIMEOUT … #define DA9150_QIF_SYNC_RETRIES … /* QIF E_FG_STATUS */ #define DA9150_FG_IRQ_LOW_SOC_MASK … #define DA9150_FG_IRQ_HIGH_SOC_MASK … #define DA9150_FG_IRQ_SOC_MASK … /* Private data */ struct da9150_fg { … }; /* Battery Properties */ static u32 da9150_fg_read_attr(struct da9150_fg *fg, u8 code, u8 size) { … } static void da9150_fg_write_attr(struct da9150_fg *fg, u8 code, u8 size, u32 val) { … } /* Trigger QIF Sync to update QIF readable data */ static void da9150_fg_read_sync_start(struct da9150_fg *fg) { … } /* * Should always be called after QIF sync read has been performed, and all * attributes required have been accessed. */ static inline void da9150_fg_read_sync_end(struct da9150_fg *fg) { … } /* Sync read of single QIF attribute */ static u32 da9150_fg_read_attr_sync(struct da9150_fg *fg, u8 code, u8 size) { … } /* Wait for QIF Sync, write QIF data and wait for ack */ static void da9150_fg_write_attr_sync(struct da9150_fg *fg, u8 code, u8 size, u32 val) { … } /* Power Supply attributes */ static int da9150_fg_capacity(struct da9150_fg *fg, union power_supply_propval *val) { … } static int da9150_fg_current_avg(struct da9150_fg *fg, union power_supply_propval *val) { … } static int da9150_fg_voltage_avg(struct da9150_fg *fg, union power_supply_propval *val) { … } static int da9150_fg_charge_full(struct da9150_fg *fg, union power_supply_propval *val) { … } /* * Temperature reading from device is only valid if battery/system provides * valid NTC to associated pin of DA9150 chip. */ static int da9150_fg_temp(struct da9150_fg *fg, union power_supply_propval *val) { … } static enum power_supply_property da9150_fg_props[] = …; static int da9150_fg_get_prop(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } /* Repeated SOC check */ static bool da9150_fg_soc_changed(struct da9150_fg *fg) { … } static void da9150_fg_work(struct work_struct *work) { … } /* SOC level event configuration */ static void da9150_fg_soc_event_config(struct da9150_fg *fg) { … } static irqreturn_t da9150_fg_irq(int irq, void *data) { … } static struct da9150_fg_pdata *da9150_fg_dt_pdata(struct device *dev) { … } static const struct power_supply_desc fg_desc = …; static int da9150_fg_probe(struct platform_device *pdev) { … } static int da9150_fg_resume(struct platform_device *pdev) { … } static struct platform_driver da9150_fg_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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