// SPDX-License-Identifier: GPL-2.0 /* * Fuel gauge driver for CellWise 2013 / 2015 * * Copyright (C) 2012, RockChip * Copyright (C) 2020, Tobias Schramm * * Authors: xuhuicong <[email protected]> * Authors: Tobias Schramm <[email protected]> */ #include <linux/bits.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/gfp.h> #include <linux/gpio/consumer.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/power_supply.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/time.h> #include <linux/workqueue.h> #include <linux/devm-helpers.h> #define CW2015_SIZE_BATINFO … #define CW2015_RESET_TRIES … #define CW2015_REG_VERSION … #define CW2015_REG_VCELL … #define CW2015_REG_SOC … #define CW2015_REG_RRT_ALERT … #define CW2015_REG_CONFIG … #define CW2015_REG_MODE … #define CW2015_REG_BATINFO … #define CW2015_MODE_SLEEP_MASK … #define CW2015_MODE_SLEEP … #define CW2015_MODE_NORMAL … #define CW2015_MODE_QUICK_START … #define CW2015_MODE_RESTART … #define CW2015_CONFIG_UPDATE_FLG … #define CW2015_ATHD(x) … #define CW2015_MASK_ATHD … #define CW2015_MASK_SOC … /* reset gauge of no valid state of charge could be polled for 40s */ #define CW2015_BAT_SOC_ERROR_MS … /* reset gauge if state of charge stuck for half an hour during charging */ #define CW2015_BAT_CHARGING_STUCK_MS … /* poll interval from CellWise GPL Android driver example */ #define CW2015_DEFAULT_POLL_INTERVAL_MS … #define CW2015_AVERAGING_SAMPLES … struct cw_battery { … }; static int cw_read_word(struct cw_battery *cw_bat, u8 reg, u16 *val) { … } static int cw_update_profile(struct cw_battery *cw_bat) { … } static int cw_init(struct cw_battery *cw_bat) { … } static int cw_power_on_reset(struct cw_battery *cw_bat) { … } #define HYSTERESIS(current, previous, up, down) … static int cw_get_soc(struct cw_battery *cw_bat) { … } static int cw_get_voltage(struct cw_battery *cw_bat) { … } static int cw_get_time_to_empty(struct cw_battery *cw_bat) { … } static void cw_update_charge_status(struct cw_battery *cw_bat) { … } static void cw_update_soc(struct cw_battery *cw_bat) { … } static void cw_update_voltage(struct cw_battery *cw_bat) { … } static void cw_update_status(struct cw_battery *cw_bat) { … } static void cw_update_time_to_empty(struct cw_battery *cw_bat) { … } static void cw_bat_work(struct work_struct *work) { … } static bool cw_battery_valid_time_to_empty(struct cw_battery *cw_bat) { … } static int cw_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static enum power_supply_property cw_battery_properties[] = …; static const struct power_supply_desc cw2015_bat_desc = …; static int cw2015_parse_properties(struct cw_battery *cw_bat) { … } static const struct regmap_range regmap_ranges_rd_yes[] = …; static const struct regmap_access_table regmap_rd_table = …; static const struct regmap_range regmap_ranges_wr_yes[] = …; static const struct regmap_access_table regmap_wr_table = …; static const struct regmap_range regmap_ranges_vol_yes[] = …; static const struct regmap_access_table regmap_vol_table = …; static const struct regmap_config cw2015_regmap_config = …; static int cw_bat_probe(struct i2c_client *client) { … } static int __maybe_unused cw_bat_suspend(struct device *dev) { … } static int __maybe_unused cw_bat_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(cw_bat_pm_ops, cw_bat_suspend, cw_bat_resume); static const struct i2c_device_id cw_bat_id_table[] = …; static const struct of_device_id cw2015_of_match[] = …; MODULE_DEVICE_TABLE(of, cw2015_of_match); static struct i2c_driver cw_bat_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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