// SPDX-License-Identifier: GPL-2.0-or-later /* * Gas Gauge driver for SBS Compliant Batteries * * Copyright (c) 2010, NVIDIA Corporation. */ #include <linux/bits.h> #include <linux/delay.h> #include <linux/devm-helpers.h> #include <linux/err.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/property.h> #include <linux/of.h> #include <linux/power/sbs-battery.h> #include <linux/power_supply.h> #include <linux/slab.h> #include <linux/stat.h> enum { … }; #define REG_ADDR_SPEC_INFO … #define SPEC_INFO_VERSION_MASK … #define SPEC_INFO_VERSION_SHIFT … #define SBS_VERSION_1_0 … #define SBS_VERSION_1_1 … #define SBS_VERSION_1_1_WITH_PEC … #define REG_ADDR_MANUFACTURE_DATE … /* Battery Mode defines */ #define BATTERY_MODE_OFFSET … #define BATTERY_MODE_CAPACITY_MASK … enum sbs_capacity_mode { … }; #define BATTERY_MODE_CHARGER_MASK … /* manufacturer access defines */ #define MANUFACTURER_ACCESS_STATUS … #define MANUFACTURER_ACCESS_SLEEP … /* battery status value bits */ #define BATTERY_INITIALIZED … #define BATTERY_DISCHARGING … #define BATTERY_FULL_CHARGED … #define BATTERY_FULL_DISCHARGED … /* min_value and max_value are only valid for numerical data */ #define SBS_DATA(_psp, _addr, _min_value, _max_value) … static const struct chip_data { … } sbs_data[] = …; static const enum power_supply_property sbs_properties[] = …; /* Supports special manufacturer commands from TI BQ20Z65 and BQ20Z75 IC. */ #define SBS_FLAGS_TI_BQ20ZX5 … static const enum power_supply_property string_properties[] = …; #define NR_STRING_BUFFERS … struct sbs_info { … }; static char *sbs_get_string_buf(struct sbs_info *chip, enum power_supply_property psp) { … } static void sbs_invalidate_cached_props(struct sbs_info *chip) { … } static bool force_load; static int sbs_read_word_data(struct i2c_client *client, u8 address); static int sbs_write_word_data(struct i2c_client *client, u8 address, u16 value); static void sbs_disable_charger_broadcasts(struct sbs_info *chip) { … } static int sbs_update_presence(struct sbs_info *chip, bool is_present) { … } static int sbs_read_word_data(struct i2c_client *client, u8 address) { … } static int sbs_read_string_data_fallback(struct i2c_client *client, u8 address, char *values) { … } static int sbs_read_string_data(struct i2c_client *client, u8 address, char *values) { … } static int sbs_write_word_data(struct i2c_client *client, u8 address, u16 value) { … } static int sbs_status_correct(struct i2c_client *client, int *intval) { … } static bool sbs_bat_needs_calibration(struct i2c_client *client) { … } static int sbs_get_ti_battery_presence_and_health( struct i2c_client *client, enum power_supply_property psp, union power_supply_propval *val) { … } static int sbs_get_battery_presence_and_health( struct i2c_client *client, enum power_supply_property psp, union power_supply_propval *val) { … } static int sbs_get_battery_property(struct i2c_client *client, int reg_offset, enum power_supply_property psp, union power_supply_propval *val) { … } static int sbs_get_property_index(struct i2c_client *client, enum power_supply_property psp) { … } static const char *sbs_get_constant_string(struct sbs_info *chip, enum power_supply_property psp) { … } static void sbs_unit_adjustment(struct i2c_client *client, enum power_supply_property psp, union power_supply_propval *val) { … } static enum sbs_capacity_mode sbs_set_capacity_mode(struct i2c_client *client, enum sbs_capacity_mode mode) { … } static int sbs_get_battery_capacity(struct i2c_client *client, int reg_offset, enum power_supply_property psp, union power_supply_propval *val) { … } static char sbs_serial[5]; static int sbs_get_battery_serial_number(struct i2c_client *client, union power_supply_propval *val) { … } static int sbs_get_chemistry(struct sbs_info *chip, union power_supply_propval *val) { … } static int sbs_get_battery_manufacture_date(struct i2c_client *client, enum power_supply_property psp, union power_supply_propval *val) { … } static int sbs_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static void sbs_supply_changed(struct sbs_info *chip) { … } static irqreturn_t sbs_irq(int irq, void *devid) { … } static void sbs_alert(struct i2c_client *client, enum i2c_alert_protocol prot, unsigned int data) { … } static void sbs_external_power_changed(struct power_supply *psy) { … } static void sbs_delayed_work(struct work_struct *work) { … } static const struct power_supply_desc sbs_default_desc = …; static int sbs_probe(struct i2c_client *client) { … } #if defined CONFIG_PM_SLEEP static int sbs_suspend(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(sbs_pm_ops, sbs_suspend, NULL); #define SBS_PM_OPS … #else #define SBS_PM_OPS … #endif static const struct i2c_device_id sbs_id[] = …; MODULE_DEVICE_TABLE(i2c, sbs_id); static const struct of_device_id sbs_dt_ids[] = …; MODULE_DEVICE_TABLE(of, sbs_dt_ids); static struct i2c_driver sbs_battery_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_param(force_load, bool, 0444); MODULE_PARM_DESC(…) …;
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