// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the TI bq24190 battery charger. * * Author: Mark A. Greer <[email protected]> */ #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/pm_runtime.h> #include <linux/power_supply.h> #include <linux/power/bq24190_charger.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/workqueue.h> #include <linux/i2c.h> #include <linux/extcon-provider.h> #define BQ24190_MANUFACTURER … #define BQ24190_REG_ISC … #define BQ24190_REG_ISC_EN_HIZ_MASK … #define BQ24190_REG_ISC_EN_HIZ_SHIFT … #define BQ24190_REG_ISC_VINDPM_MASK … #define BQ24190_REG_ISC_VINDPM_SHIFT … #define BQ24190_REG_ISC_IINLIM_MASK … #define BQ24190_REG_ISC_IINLIM_SHIFT … #define BQ24190_REG_POC … #define BQ24190_REG_POC_RESET_MASK … #define BQ24190_REG_POC_RESET_SHIFT … #define BQ24190_REG_POC_WDT_RESET_MASK … #define BQ24190_REG_POC_WDT_RESET_SHIFT … #define BQ24190_REG_POC_CHG_CONFIG_MASK … #define BQ24190_REG_POC_CHG_CONFIG_SHIFT … #define BQ24190_REG_POC_CHG_CONFIG_DISABLE … #define BQ24190_REG_POC_CHG_CONFIG_CHARGE … #define BQ24190_REG_POC_CHG_CONFIG_OTG … #define BQ24190_REG_POC_CHG_CONFIG_OTG_ALT … #define BQ24296_REG_POC_OTG_CONFIG_MASK … #define BQ24296_REG_POC_OTG_CONFIG_SHIFT … #define BQ24296_REG_POC_CHG_CONFIG_MASK … #define BQ24296_REG_POC_CHG_CONFIG_SHIFT … #define BQ24296_REG_POC_OTG_CONFIG_DISABLE … #define BQ24296_REG_POC_OTG_CONFIG_OTG … #define BQ24190_REG_POC_SYS_MIN_MASK … #define BQ24190_REG_POC_SYS_MIN_SHIFT … #define BQ24190_REG_POC_SYS_MIN_MIN … #define BQ24190_REG_POC_SYS_MIN_MAX … #define BQ24190_REG_POC_BOOST_LIM_MASK … #define BQ24190_REG_POC_BOOST_LIM_SHIFT … #define BQ24190_REG_CCC … #define BQ24190_REG_CCC_ICHG_MASK … #define BQ24190_REG_CCC_ICHG_SHIFT … #define BQ24190_REG_CCC_FORCE_20PCT_MASK … #define BQ24190_REG_CCC_FORCE_20PCT_SHIFT … #define BQ24190_REG_PCTCC … #define BQ24190_REG_PCTCC_IPRECHG_MASK … #define BQ24190_REG_PCTCC_IPRECHG_SHIFT … #define BQ24190_REG_PCTCC_IPRECHG_MIN … #define BQ24190_REG_PCTCC_IPRECHG_MAX … #define BQ24190_REG_PCTCC_ITERM_MASK … #define BQ24190_REG_PCTCC_ITERM_SHIFT … #define BQ24190_REG_PCTCC_ITERM_MIN … #define BQ24190_REG_PCTCC_ITERM_MAX … #define BQ24190_REG_CVC … #define BQ24190_REG_CVC_VREG_MASK … #define BQ24190_REG_CVC_VREG_SHIFT … #define BQ24190_REG_CVC_BATLOWV_MASK … #define BQ24190_REG_CVC_BATLOWV_SHIFT … #define BQ24190_REG_CVC_VRECHG_MASK … #define BQ24190_REG_CVC_VRECHG_SHIFT … #define BQ24190_REG_CTTC … #define BQ24190_REG_CTTC_EN_TERM_MASK … #define BQ24190_REG_CTTC_EN_TERM_SHIFT … #define BQ24190_REG_CTTC_TERM_STAT_MASK … #define BQ24190_REG_CTTC_TERM_STAT_SHIFT … #define BQ24190_REG_CTTC_WATCHDOG_MASK … #define BQ24190_REG_CTTC_WATCHDOG_SHIFT … #define BQ24190_REG_CTTC_EN_TIMER_MASK … #define BQ24190_REG_CTTC_EN_TIMER_SHIFT … #define BQ24190_REG_CTTC_CHG_TIMER_MASK … #define BQ24190_REG_CTTC_CHG_TIMER_SHIFT … #define BQ24190_REG_CTTC_JEITA_ISET_MASK … #define BQ24190_REG_CTTC_JEITA_ISET_SHIFT … #define BQ24190_REG_ICTRC … #define BQ24190_REG_ICTRC_BAT_COMP_MASK … #define BQ24190_REG_ICTRC_BAT_COMP_SHIFT … #define BQ24190_REG_ICTRC_VCLAMP_MASK … #define BQ24190_REG_ICTRC_VCLAMP_SHIFT … #define BQ24190_REG_ICTRC_TREG_MASK … #define BQ24190_REG_ICTRC_TREG_SHIFT … #define BQ24190_REG_MOC … #define BQ24190_REG_MOC_DPDM_EN_MASK … #define BQ24190_REG_MOC_DPDM_EN_SHIFT … #define BQ24190_REG_MOC_TMR2X_EN_MASK … #define BQ24190_REG_MOC_TMR2X_EN_SHIFT … #define BQ24190_REG_MOC_BATFET_DISABLE_MASK … #define BQ24190_REG_MOC_BATFET_DISABLE_SHIFT … #define BQ24190_REG_MOC_JEITA_VSET_MASK … #define BQ24190_REG_MOC_JEITA_VSET_SHIFT … #define BQ24190_REG_MOC_INT_MASK_MASK … #define BQ24190_REG_MOC_INT_MASK_SHIFT … #define BQ24190_REG_SS … #define BQ24190_REG_SS_VBUS_STAT_MASK … #define BQ24190_REG_SS_VBUS_STAT_SHIFT … #define BQ24190_REG_SS_CHRG_STAT_MASK … #define BQ24190_REG_SS_CHRG_STAT_SHIFT … #define BQ24190_REG_SS_DPM_STAT_MASK … #define BQ24190_REG_SS_DPM_STAT_SHIFT … #define BQ24190_REG_SS_PG_STAT_MASK … #define BQ24190_REG_SS_PG_STAT_SHIFT … #define BQ24190_REG_SS_THERM_STAT_MASK … #define BQ24190_REG_SS_THERM_STAT_SHIFT … #define BQ24190_REG_SS_VSYS_STAT_MASK … #define BQ24190_REG_SS_VSYS_STAT_SHIFT … #define BQ24190_REG_F … #define BQ24190_REG_F_WATCHDOG_FAULT_MASK … #define BQ24190_REG_F_WATCHDOG_FAULT_SHIFT … #define BQ24190_REG_F_BOOST_FAULT_MASK … #define BQ24190_REG_F_BOOST_FAULT_SHIFT … #define BQ24190_REG_F_CHRG_FAULT_MASK … #define BQ24190_REG_F_CHRG_FAULT_SHIFT … #define BQ24190_REG_F_BAT_FAULT_MASK … #define BQ24190_REG_F_BAT_FAULT_SHIFT … #define BQ24190_REG_F_NTC_FAULT_MASK … #define BQ24190_REG_F_NTC_FAULT_SHIFT … #define BQ24296_REG_F_NTC_FAULT_MASK … #define BQ24296_REG_F_NTC_FAULT_SHIFT … #define BQ24190_REG_VPRS … #define BQ24190_REG_VPRS_PN_MASK … #define BQ24190_REG_VPRS_PN_SHIFT … #define BQ24190_REG_VPRS_PN_24190 … #define BQ24190_REG_VPRS_PN_24192 … #define BQ24190_REG_VPRS_PN_24192I … #define BQ24296_REG_VPRS_PN_MASK … #define BQ24296_REG_VPRS_PN_SHIFT … #define BQ24296_REG_VPRS_PN_24296 … #define BQ24190_REG_VPRS_TS_PROFILE_MASK … #define BQ24190_REG_VPRS_TS_PROFILE_SHIFT … #define BQ24190_REG_VPRS_DEV_REG_MASK … #define BQ24190_REG_VPRS_DEV_REG_SHIFT … /* * The tables below provide a 2-way mapping for the value that goes in * the register field and the real-world value that it represents. * The index of the array is the value that goes in the register; the * number at that index in the array is the real-world value that it * represents. */ /* REG00[2:0] (IINLIM) in uAh */ static const int bq24190_isc_iinlim_values[] = …; /* REG02[7:2] (ICHG) in uAh */ static const int bq24190_ccc_ichg_values[] = …; /* ICHG higher than 3008mA is not supported in BQ24296 */ #define BQ24296_CCC_ICHG_VALUES_LEN … /* REG04[7:2] (VREG) in uV */ static const int bq24190_cvc_vreg_values[] = …; /* REG06[1:0] (TREG) in tenths of degrees Celsius */ static const int bq24190_ictrc_treg_values[] = …; enum bq24190_chip { … }; /* * The FAULT register is latched by the bq24190 (except for NTC_FAULT) * so the first read after a fault returns the latched value and subsequent * reads return the current value. In order to return the fault status * to the user, have the interrupt handler save the reg's value and retrieve * it in the appropriate health/status routine. */ struct bq24190_dev_info { … }; struct bq24190_chip_info { … }; static int bq24190_charger_set_charge_type(struct bq24190_dev_info *bdi, const union power_supply_propval *val); static const unsigned int bq24190_usb_extcon_cable[] = …; /* * Return the index in 'tbl' of greatest value that is less than or equal to * 'val'. The index range returned is 0 to 'tbl_size' - 1. Assumes that * the values in 'tbl' are sorted from smallest to largest and 'tbl_size' * is less than 2^8. */ static u8 bq24190_find_idx(const int tbl[], int tbl_size, int v) { … } /* Basic driver I/O routines */ static int bq24190_read(struct bq24190_dev_info *bdi, u8 reg, u8 *data) { … } static int bq24190_write(struct bq24190_dev_info *bdi, u8 reg, u8 data) { … } static int bq24190_read_mask(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, u8 *data) { … } static int bq24190_write_mask(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, u8 data) { … } static int bq24190_get_field_val(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, const int tbl[], int tbl_size, int *val) { … } static int bq24190_set_field_val(struct bq24190_dev_info *bdi, u8 reg, u8 mask, u8 shift, const int tbl[], int tbl_size, int val) { … } #ifdef CONFIG_SYSFS /* * There are a numerous options that are configurable on the bq24190 * that go well beyond what the power_supply properties provide access to. * Provide sysfs access to them so they can be examined and possibly modified * on the fly. They will be provided for the charger power_supply object only * and will be prefixed by 'f_' to make them easier to recognize. */ #define BQ24190_SYSFS_FIELD(_name, r, f, m, store) … #define BQ24190_SYSFS_FIELD_RW(_name, r, f) … #define BQ24190_SYSFS_FIELD_RO(_name, r, f) … static ssize_t bq24190_sysfs_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t bq24190_sysfs_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); struct bq24190_sysfs_field_info { … }; /* On i386 ptrace-abi.h defines SS that breaks the macro calls below. */ #undef SS static struct bq24190_sysfs_field_info bq24190_sysfs_field_tbl[] = …; static struct attribute * bq24190_sysfs_attrs[ARRAY_SIZE(bq24190_sysfs_field_tbl) + 1]; ATTRIBUTE_GROUPS(…); static void bq24190_sysfs_init_attrs(void) { … } static struct bq24190_sysfs_field_info *bq24190_sysfs_field_lookup( const char *name) { … } static ssize_t bq24190_sysfs_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bq24190_sysfs_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } #endif static int bq24190_set_otg_vbus(struct bq24190_dev_info *bdi, bool enable) { … } static int bq24296_set_otg_vbus(struct bq24190_dev_info *bdi, bool enable) { … } #ifdef CONFIG_REGULATOR static int bq24190_vbus_enable(struct regulator_dev *dev) { … } static int bq24190_vbus_disable(struct regulator_dev *dev) { … } static int bq24190_vbus_is_enabled(struct regulator_dev *dev) { … } static int bq24296_vbus_enable(struct regulator_dev *dev) { … } static int bq24296_vbus_disable(struct regulator_dev *dev) { … } static int bq24296_vbus_is_enabled(struct regulator_dev *dev) { … } static const struct regulator_ops bq24190_vbus_ops = …; static const struct regulator_desc bq24190_vbus_desc = …; static const struct regulator_ops bq24296_vbus_ops = …; static const struct regulator_desc bq24296_vbus_desc = …; static const struct regulator_init_data bq24190_vbus_init_data = …; static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi) { … } #else static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi) { return 0; } #endif static int bq24190_set_config(struct bq24190_dev_info *bdi) { … } static int bq24190_register_reset(struct bq24190_dev_info *bdi) { … } /* Charger power supply property routines */ static int bq24190_charger_get_charge_type(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_battery_set_chg_config(struct bq24190_dev_info *bdi, const u8 chg_config) { … } static int bq24296_battery_set_chg_config(struct bq24190_dev_info *bdi, const u8 chg_config) { … } static int bq24190_charger_set_charge_type(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_charger_get_ntc_status(u8 value) { … } static int bq24296_charger_get_ntc_status(u8 value) { … } static int bq24190_charger_get_health(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_get_online(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_battery_set_online(struct bq24190_dev_info *bdi, const union power_supply_propval *val); static int bq24190_battery_get_status(struct bq24190_dev_info *bdi, union power_supply_propval *val); static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi, union power_supply_propval *val); static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi, const union power_supply_propval *val); static int bq24190_charger_set_online(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_charger_get_status(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_get_temp_alert_max(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_set_temp_alert_max(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_charger_get_precharge(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_get_charge_term(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_get_current(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_set_current(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_charger_get_voltage(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_set_voltage(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_charger_get_iinlimit(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_charger_set_iinlimit(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_charger_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int bq24190_charger_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { … } static int bq24190_charger_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { … } static void bq24190_input_current_limit_work(struct work_struct *work) { … } /* Sync the input-current-limit with our parent supply (if we have one) */ static void bq24190_charger_external_power_changed(struct power_supply *psy) { … } static enum power_supply_property bq24190_charger_properties[] = …; static char *bq24190_charger_supplied_to[] = …; static const struct power_supply_desc bq24190_charger_desc = …; /* Battery power supply property routines */ static int bq24190_battery_get_status(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_battery_get_health(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_battery_get_online(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_battery_set_online(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi, union power_supply_propval *val) { … } static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi, const union power_supply_propval *val) { … } static int bq24190_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int bq24190_battery_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { … } static int bq24190_battery_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { … } static enum power_supply_property bq24190_battery_properties[] = …; static const struct power_supply_desc bq24190_battery_desc = …; static int bq24190_configure_usb_otg(struct bq24190_dev_info *bdi, u8 ss_reg) { … } static void bq24190_check_status(struct bq24190_dev_info *bdi) { … } static irqreturn_t bq24190_irq_handler_thread(int irq, void *data) { … } static int bq24190_check_chip(struct bq24190_dev_info *bdi) { … } static int bq24296_check_chip(struct bq24190_dev_info *bdi) { … } static int bq24190_hw_init(struct bq24190_dev_info *bdi) { … } static int bq24190_get_config(struct bq24190_dev_info *bdi) { … } static const struct bq24190_chip_info bq24190_chip_info_tbl[] = …; static int bq24190_probe(struct i2c_client *client) { … } static void bq24190_remove(struct i2c_client *client) { … } static void bq24190_shutdown(struct i2c_client *client) { … } static __maybe_unused int bq24190_runtime_suspend(struct device *dev) { … } static __maybe_unused int bq24190_runtime_resume(struct device *dev) { … } static __maybe_unused int bq24190_pm_suspend(struct device *dev) { … } static __maybe_unused int bq24190_pm_resume(struct device *dev) { … } static const struct dev_pm_ops bq24190_pm_ops = …; static const struct i2c_device_id bq24190_i2c_ids[] = …; MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids); static const struct of_device_id bq24190_of_match[] = …; MODULE_DEVICE_TABLE(of, bq24190_of_match); static struct i2c_driver bq24190_driver = …; module_i2c_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
Codebase Browser
linux