// SPDX-License-Identifier: GPL-2.0+ /* * Driver for UCS1002 Programmable USB Port Power Controller * * Copyright (C) 2019 Zodiac Inflight Innovations */ #include <linux/bits.h> #include <linux/freezer.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/kthread.h> #include <linux/device.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/power_supply.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/of_regulator.h> /* UCS1002 Registers */ #define UCS1002_REG_CURRENT_MEASUREMENT … /* * The Total Accumulated Charge registers store the total accumulated * charge delivered from the VS source to a portable device. The total * value is calculated using four registers, from 01h to 04h. The bit * weighting of the registers is given in mA/hrs. */ #define UCS1002_REG_TOTAL_ACC_CHARGE … /* Other Status Register */ #define UCS1002_REG_OTHER_STATUS … #define F_ADET_PIN … #define F_CHG_ACT … /* Interrupt Status */ #define UCS1002_REG_INTERRUPT_STATUS … #define F_ERR … #define F_DISCHARGE_ERR … #define F_RESET … #define F_MIN_KEEP_OUT … #define F_TSD … #define F_OVER_VOLT … #define F_BACK_VOLT … #define F_OVER_ILIM … /* Pin Status Register */ #define UCS1002_REG_PIN_STATUS … #define UCS1002_PWR_STATE_MASK … #define F_PWR_EN_PIN … #define F_M2_PIN … #define F_M1_PIN … #define F_EM_EN_PIN … #define F_SEL_PIN … #define F_ACTIVE_MODE_MASK … #define F_ACTIVE_MODE_PASSTHROUGH … #define F_ACTIVE_MODE_DEDICATED … #define F_ACTIVE_MODE_BC12_DCP … #define F_ACTIVE_MODE_BC12_SDP … #define F_ACTIVE_MODE_BC12_CDP … /* General Configuration Register */ #define UCS1002_REG_GENERAL_CFG … #define F_RATION_EN … /* Emulation Configuration Register */ #define UCS1002_REG_EMU_CFG … /* Switch Configuration Register */ #define UCS1002_REG_SWITCH_CFG … #define F_PIN_IGNORE … #define F_EM_EN_SET … #define F_M2_SET … #define F_M1_SET … #define F_S0_SET … #define F_PWR_EN_SET … #define F_LATCH_SET … #define V_SET_ACTIVE_MODE_MASK … #define V_SET_ACTIVE_MODE_PASSTHROUGH … #define V_SET_ACTIVE_MODE_DEDICATED … #define V_SET_ACTIVE_MODE_BC12_DCP … #define V_SET_ACTIVE_MODE_BC12_SDP … #define V_SET_ACTIVE_MODE_BC12_CDP … /* Current Limit Register */ #define UCS1002_REG_ILIMIT … #define UCS1002_ILIM_SW_MASK … /* Product ID */ #define UCS1002_REG_PRODUCT_ID … #define UCS1002_PRODUCT_ID … /* Manufacture name */ #define UCS1002_MANUFACTURER … struct ucs1002_info { … }; static enum power_supply_property ucs1002_props[] = …; static int ucs1002_get_online(struct ucs1002_info *info, union power_supply_propval *val) { … } static int ucs1002_get_charge(struct ucs1002_info *info, union power_supply_propval *val) { … } static int ucs1002_get_current(struct ucs1002_info *info, union power_supply_propval *val) { … } /* * The Current Limit register stores the maximum current used by the * port switch. The range is from 500mA to 2.5 A. */ static const u32 ucs1002_current_limit_uA[] = …; static int ucs1002_get_max_current(struct ucs1002_info *info, union power_supply_propval *val) { … } static int ucs1002_set_max_current(struct ucs1002_info *info, u32 val) { … } static enum power_supply_usb_type ucs1002_usb_types[] = …; static int ucs1002_set_usb_type(struct ucs1002_info *info, int val) { … } static int ucs1002_get_usb_type(struct ucs1002_info *info, union power_supply_propval *val) { … } static int ucs1002_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int ucs1002_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { … } static int ucs1002_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { … } static const struct power_supply_desc ucs1002_charger_desc = …; static void ucs1002_health_poll(struct work_struct *work) { … } static irqreturn_t ucs1002_charger_irq(int irq, void *data) { … } static irqreturn_t ucs1002_alert_irq(int irq, void *data) { … } static int ucs1002_regulator_enable(struct regulator_dev *rdev) { … } static const struct regulator_ops ucs1002_regulator_ops = …; static const struct regulator_desc ucs1002_regulator_descriptor = …; static int ucs1002_probe(struct i2c_client *client) { … } static const struct of_device_id ucs1002_of_match[] = …; MODULE_DEVICE_TABLE(of, ucs1002_of_match); static struct i2c_driver ucs1002_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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