// SPDX-License-Identifier: GPL-2.0 // BQ256XX Battery Charger Driver // Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/ #include <linux/err.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/gpio/consumer.h> #include <linux/power_supply.h> #include <linux/regmap.h> #include <linux/types.h> #include <linux/usb/phy.h> #include <linux/device.h> #include <linux/moduleparam.h> #include <linux/slab.h> #include <linux/acpi.h> #define BQ256XX_MANUFACTURER … #define BQ256XX_INPUT_CURRENT_LIMIT … #define BQ256XX_CHARGER_CONTROL_0 … #define BQ256XX_CHARGE_CURRENT_LIMIT … #define BQ256XX_PRECHG_AND_TERM_CURR_LIM … #define BQ256XX_BATTERY_VOLTAGE_LIMIT … #define BQ256XX_CHARGER_CONTROL_1 … #define BQ256XX_CHARGER_CONTROL_2 … #define BQ256XX_CHARGER_CONTROL_3 … #define BQ256XX_CHARGER_STATUS_0 … #define BQ256XX_CHARGER_STATUS_1 … #define BQ256XX_CHARGER_STATUS_2 … #define BQ256XX_PART_INFORMATION … #define BQ256XX_CHARGER_CONTROL_4 … #define BQ256XX_IINDPM_MASK … #define BQ256XX_IINDPM_STEP_uA … #define BQ256XX_IINDPM_OFFSET_uA … #define BQ256XX_IINDPM_MIN_uA … #define BQ256XX_IINDPM_MAX_uA … #define BQ256XX_IINDPM_DEF_uA … #define BQ256XX_TS_IGNORE … #define BQ256XX_TS_IGNORE_SHIFT … #define BQ256XX_VINDPM_MASK … #define BQ256XX_VINDPM_STEP_uV … #define BQ256XX_VINDPM_OFFSET_uV … #define BQ256XX_VINDPM_MIN_uV … #define BQ256XX_VINDPM_MAX_uV … #define BQ256XX_VINDPM_DEF_uV … #define BQ256XX_VBATREG_MASK … #define BQ2560X_VBATREG_STEP_uV … #define BQ2560X_VBATREG_OFFSET_uV … #define BQ2560X_VBATREG_MIN_uV … #define BQ2560X_VBATREG_MAX_uV … #define BQ2560X_VBATREG_DEF_uV … #define BQ25601D_VBATREG_OFFSET_uV … #define BQ25601D_VBATREG_MIN_uV … #define BQ25601D_VBATREG_MAX_uV … #define BQ25601D_VBATREG_DEF_uV … #define BQ2561X_VBATREG_STEP_uV … #define BQ25611D_VBATREG_MIN_uV … #define BQ25611D_VBATREG_MAX_uV … #define BQ25611D_VBATREG_DEF_uV … #define BQ25618_VBATREG_MIN_uV … #define BQ25618_VBATREG_MAX_uV … #define BQ25618_VBATREG_DEF_uV … #define BQ256XX_VBATREG_BIT_SHIFT … #define BQ2561X_VBATREG_THRESH … #define BQ25611D_VBATREG_THRESH_uV … #define BQ25618_VBATREG_THRESH_uV … #define BQ256XX_CHG_CONFIG_MASK … #define BQ256XX_CHG_CONFIG_BIT_SHIFT … #define BQ256XX_ITERM_MASK … #define BQ256XX_ITERM_STEP_uA … #define BQ256XX_ITERM_OFFSET_uA … #define BQ256XX_ITERM_MIN_uA … #define BQ256XX_ITERM_MAX_uA … #define BQ256XX_ITERM_DEF_uA … #define BQ25618_ITERM_STEP_uA … #define BQ25618_ITERM_OFFSET_uA … #define BQ25618_ITERM_MIN_uA … #define BQ25618_ITERM_MAX_uA … #define BQ25618_ITERM_DEF_uA … #define BQ256XX_IPRECHG_MASK … #define BQ256XX_IPRECHG_STEP_uA … #define BQ256XX_IPRECHG_OFFSET_uA … #define BQ256XX_IPRECHG_MIN_uA … #define BQ256XX_IPRECHG_MAX_uA … #define BQ256XX_IPRECHG_DEF_uA … #define BQ25618_IPRECHG_STEP_uA … #define BQ25618_IPRECHG_OFFSET_uA … #define BQ25618_IPRECHG_MIN_uA … #define BQ25618_IPRECHG_MAX_uA … #define BQ25618_IPRECHG_DEF_uA … #define BQ256XX_IPRECHG_BIT_SHIFT … #define BQ256XX_ICHG_MASK … #define BQ256XX_ICHG_STEP_uA … #define BQ256XX_ICHG_MIN_uA … #define BQ256XX_ICHG_MAX_uA … #define BQ2560X_ICHG_DEF_uA … #define BQ25611D_ICHG_DEF_uA … #define BQ25618_ICHG_STEP_uA … #define BQ25618_ICHG_MIN_uA … #define BQ25618_ICHG_MAX_uA … #define BQ25618_ICHG_DEF_uA … #define BQ25618_ICHG_THRESH … #define BQ25618_ICHG_THRESH_uA … #define BQ256XX_VBUS_STAT_MASK … #define BQ256XX_VBUS_STAT_NO_INPUT … #define BQ256XX_VBUS_STAT_USB_SDP … #define BQ256XX_VBUS_STAT_USB_CDP … #define BQ256XX_VBUS_STAT_USB_DCP … #define BQ256XX_VBUS_STAT_USB_OTG … #define BQ256XX_CHRG_STAT_MASK … #define BQ256XX_CHRG_STAT_NOT_CHRGING … #define BQ256XX_CHRG_STAT_PRECHRGING … #define BQ256XX_CHRG_STAT_FAST_CHRGING … #define BQ256XX_CHRG_STAT_CHRG_TERM … #define BQ256XX_PG_STAT_MASK … #define BQ256XX_WDT_FAULT_MASK … #define BQ256XX_CHRG_FAULT_MASK … #define BQ256XX_CHRG_FAULT_NORMAL … #define BQ256XX_CHRG_FAULT_INPUT … #define BQ256XX_CHRG_FAULT_THERM … #define BQ256XX_CHRG_FAULT_CST_EXPIRE … #define BQ256XX_BAT_FAULT_MASK … #define BQ256XX_NTC_FAULT_MASK … #define BQ256XX_NTC_FAULT_WARM … #define BQ256XX_NTC_FAULT_COOL … #define BQ256XX_NTC_FAULT_COLD … #define BQ256XX_NTC_FAULT_HOT … #define BQ256XX_NUM_WD_VAL … #define BQ256XX_WATCHDOG_MASK … #define BQ256XX_WATCHDOG_MAX … #define BQ256XX_WATCHDOG_DIS … #define BQ256XX_WDT_BIT_SHIFT … #define BQ256XX_REG_RST … /** * struct bq256xx_init_data - * @ichg: fast charge current * @iindpm: input current limit * @vbatreg: charge voltage * @iterm: termination current * @iprechg: precharge current * @vindpm: input voltage limit * @ichg_max: maximum fast charge current * @vbatreg_max: maximum charge voltage * @ts_ignore: TS_IGNORE flag */ struct bq256xx_init_data { … }; /** * struct bq256xx_state - * @vbus_stat: VBUS status according to BQ256XX_CHARGER_STATUS_0 * @chrg_stat: charging status according to BQ256XX_CHARGER_STATUS_0 * @online: PG status according to BQ256XX_CHARGER_STATUS_0 * * @wdt_fault: watchdog fault according to BQ256XX_CHARGER_STATUS_1 * @bat_fault: battery fault according to BQ256XX_CHARGER_STATUS_1 * @chrg_fault: charging fault according to BQ256XX_CHARGER_STATUS_1 * @ntc_fault: TS fault according to BQ256XX_CHARGER_STATUS_1 */ struct bq256xx_state { … }; enum bq256xx_id { … }; /** * struct bq256xx_device - * @client: i2c client structure * @regmap: register map structure * @dev: device structure * @charger: power supply registered for the charger * @battery: power supply registered for the battery * @lock: mutex lock structure * * @usb2_phy: usb_phy identifier * @usb3_phy: usb_phy identifier * @usb_nb: notifier block * @usb_work: usb work queue * @usb_event: usb_event code * * @model_name: i2c name string * * @init_data: initialization data * @chip_info: device variant information * @state: device status and faults * @watchdog_timer: watchdog timer value in milliseconds */ struct bq256xx_device { … }; /** * struct bq256xx_chip_info - * @model_id: device instance * * @bq256xx_regmap_config: regmap configuration struct * @bq256xx_get_ichg: pointer to instance specific get_ichg function * @bq256xx_get_iindpm: pointer to instance specific get_iindpm function * @bq256xx_get_vbatreg: pointer to instance specific get_vbatreg function * @bq256xx_get_iterm: pointer to instance specific get_iterm function * @bq256xx_get_iprechg: pointer to instance specific get_iprechg function * @bq256xx_get_vindpm: pointer to instance specific get_vindpm function * * @bq256xx_set_ichg: pointer to instance specific set_ichg function * @bq256xx_set_iindpm: pointer to instance specific set_iindpm function * @bq256xx_set_vbatreg: pointer to instance specific set_vbatreg function * @bq256xx_set_iterm: pointer to instance specific set_iterm function * @bq256xx_set_iprechg: pointer to instance specific set_iprechg function * @bq256xx_set_vindpm: pointer to instance specific set_vindpm function * @bq256xx_set_charge_type: pointer to instance specific set_charge_type function * @bq256xx_set_ts_ignore: pointer to instance specific set_ts_ignore function * * @bq256xx_def_ichg: default ichg value in microamps * @bq256xx_def_iindpm: default iindpm value in microamps * @bq256xx_def_vbatreg: default vbatreg value in microvolts * @bq256xx_def_iterm: default iterm value in microamps * @bq256xx_def_iprechg: default iprechg value in microamps * @bq256xx_def_vindpm: default vindpm value in microvolts * * @bq256xx_max_ichg: maximum charge current in microamps * @bq256xx_max_vbatreg: maximum battery regulation voltage in microvolts * * @has_usb_detect: indicates whether device has BC1.2 detection */ struct bq256xx_chip_info { … }; static int bq256xx_watchdog_time[BQ256XX_NUM_WD_VAL] = …; static const int bq25611d_vbatreg_values[] = …; static const int bq25618_619_vbatreg_values[] = …; static const int bq25618_619_ichg_values[] = …; static enum power_supply_usb_type bq256xx_usb_type[] = …; static int bq256xx_array_parse(int array_size, int val, const int array[]) { … } static int bq256xx_usb_notifier(struct notifier_block *nb, unsigned long val, void *priv) { … } static void bq256xx_usb_work(struct work_struct *data) { … } static struct reg_default bq2560x_reg_defs[] = …; static struct reg_default bq25611d_reg_defs[] = …; static struct reg_default bq25618_619_reg_defs[] = …; static int bq256xx_get_state(struct bq256xx_device *bq, struct bq256xx_state *state) { … } static int bq256xx_set_charge_type(struct bq256xx_device *bq, int type) { … } static int bq256xx_get_ichg_curr(struct bq256xx_device *bq) { … } static int bq25618_619_get_ichg_curr(struct bq256xx_device *bq) { … } static int bq256xx_set_ichg_curr(struct bq256xx_device *bq, int ichg) { … } static int bq25618_619_set_ichg_curr(struct bq256xx_device *bq, int ichg) { … } static int bq25618_619_get_chrg_volt(struct bq256xx_device *bq) { … } static int bq25611d_get_chrg_volt(struct bq256xx_device *bq) { … } static int bq2560x_get_chrg_volt(struct bq256xx_device *bq) { … } static int bq25601d_get_chrg_volt(struct bq256xx_device *bq) { … } static int bq25618_619_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) { … } static int bq25611d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) { … } static int bq2560x_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) { … } static int bq25601d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) { … } static int bq256xx_set_ts_ignore(struct bq256xx_device *bq, bool ts_ignore) { … } static int bq256xx_get_prechrg_curr(struct bq256xx_device *bq) { … } static int bq256xx_set_prechrg_curr(struct bq256xx_device *bq, int iprechg) { … } static int bq25618_619_get_prechrg_curr(struct bq256xx_device *bq) { … } static int bq25618_619_set_prechrg_curr(struct bq256xx_device *bq, int iprechg) { … } static int bq256xx_get_term_curr(struct bq256xx_device *bq) { … } static int bq256xx_set_term_curr(struct bq256xx_device *bq, int iterm) { … } static int bq25618_619_get_term_curr(struct bq256xx_device *bq) { … } static int bq25618_619_set_term_curr(struct bq256xx_device *bq, int iterm) { … } static int bq256xx_get_input_volt_lim(struct bq256xx_device *bq) { … } static int bq256xx_set_input_volt_lim(struct bq256xx_device *bq, int vindpm) { … } static int bq256xx_get_input_curr_lim(struct bq256xx_device *bq) { … } static int bq256xx_set_input_curr_lim(struct bq256xx_device *bq, int iindpm) { … } static void bq256xx_charger_reset(void *data) { … } static int bq256xx_set_charger_property(struct power_supply *psy, enum power_supply_property prop, const union power_supply_propval *val) { … } static int bq256xx_get_battery_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int bq256xx_get_charger_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static bool bq256xx_state_changed(struct bq256xx_device *bq, struct bq256xx_state *new_state) { … } static irqreturn_t bq256xx_irq_handler_thread(int irq, void *private) { … } static enum power_supply_property bq256xx_power_supply_props[] = …; static enum power_supply_property bq256xx_battery_props[] = …; static int bq256xx_property_is_writeable(struct power_supply *psy, enum power_supply_property prop) { … } static const struct power_supply_desc bq256xx_power_supply_desc = …; static struct power_supply_desc bq256xx_battery_desc = …; static bool bq256xx_is_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config bq25600_regmap_config = …; static const struct regmap_config bq25611d_regmap_config = …; static const struct regmap_config bq25618_619_regmap_config = …; static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = …; static int bq256xx_power_supply_init(struct bq256xx_device *bq, struct power_supply_config *psy_cfg, struct device *dev) { … } static int bq256xx_hw_init(struct bq256xx_device *bq) { … } static int bq256xx_parse_dt(struct bq256xx_device *bq, struct power_supply_config *psy_cfg, struct device *dev) { … } static int bq256xx_probe(struct i2c_client *client) { … } static const struct i2c_device_id bq256xx_i2c_ids[] = …; MODULE_DEVICE_TABLE(i2c, bq256xx_i2c_ids); static const struct of_device_id bq256xx_of_match[] = …; MODULE_DEVICE_TABLE(of, bq256xx_of_match); static const struct acpi_device_id bq256xx_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, bq256xx_acpi_match); static struct i2c_driver bq256xx_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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