| /* |
| * Power supply driver for the Active-semi ACT8945A PMIC |
| * |
| * Copyright (C) 2015 Atmel Corporation |
| * |
| * Author: Wenyou Yang <wenyou.yang@atmel.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| */ |
| #include <linux/interrupt.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/of_irq.h> |
| #include <linux/platform_device.h> |
| #include <linux/power_supply.h> |
| #include <linux/regmap.h> |
| #include <linux/gpio/consumer.h> |
| |
| static const char *act8945a_charger_model = "ACT8945A"; |
| static const char *act8945a_charger_manufacturer = "Active-semi"; |
| |
| /** |
| * ACT8945A Charger Register Map |
| */ |
| |
| /* 0x70: Reserved */ |
| #define ACT8945A_APCH_CFG 0x71 |
| #define ACT8945A_APCH_STATUS 0x78 |
| #define ACT8945A_APCH_CTRL 0x79 |
| #define ACT8945A_APCH_STATE 0x7A |
| |
| /* ACT8945A_APCH_CFG */ |
| #define APCH_CFG_OVPSET (0x3 << 0) |
| #define APCH_CFG_OVPSET_6V6 (0x0 << 0) |
| #define APCH_CFG_OVPSET_7V (0x1 << 0) |
| #define APCH_CFG_OVPSET_7V5 (0x2 << 0) |
| #define APCH_CFG_OVPSET_8V (0x3 << 0) |
| #define APCH_CFG_PRETIMO (0x3 << 2) |
| #define APCH_CFG_PRETIMO_40_MIN (0x0 << 2) |
| #define APCH_CFG_PRETIMO_60_MIN (0x1 << 2) |
| #define APCH_CFG_PRETIMO_80_MIN (0x2 << 2) |
| #define APCH_CFG_PRETIMO_DISABLED (0x3 << 2) |
| #define APCH_CFG_TOTTIMO (0x3 << 4) |
| #define APCH_CFG_TOTTIMO_3_HOUR (0x0 << 4) |
| #define APCH_CFG_TOTTIMO_4_HOUR (0x1 << 4) |
| #define APCH_CFG_TOTTIMO_5_HOUR (0x2 << 4) |
| #define APCH_CFG_TOTTIMO_DISABLED (0x3 << 4) |
| #define APCH_CFG_SUSCHG (0x1 << 7) |
| |
| #define APCH_STATUS_CHGDAT BIT(0) |
| #define APCH_STATUS_INDAT BIT(1) |
| #define APCH_STATUS_TEMPDAT BIT(2) |
| #define APCH_STATUS_TIMRDAT BIT(3) |
| #define APCH_STATUS_CHGSTAT BIT(4) |
| #define APCH_STATUS_INSTAT BIT(5) |
| #define APCH_STATUS_TEMPSTAT BIT(6) |
| #define APCH_STATUS_TIMRSTAT BIT(7) |
| |
| #define APCH_CTRL_CHGEOCOUT BIT(0) |
| #define APCH_CTRL_INDIS BIT(1) |
| #define APCH_CTRL_TEMPOUT BIT(2) |
| #define APCH_CTRL_TIMRPRE BIT(3) |
| #define APCH_CTRL_CHGEOCIN BIT(4) |
| #define APCH_CTRL_INCON BIT(5) |
| #define APCH_CTRL_TEMPIN BIT(6) |
| #define APCH_CTRL_TIMRTOT BIT(7) |
| |
| #define APCH_STATE_ACINSTAT (0x1 << 1) |
| #define APCH_STATE_CSTATE (0x3 << 4) |
| #define APCH_STATE_CSTATE_SHIFT 4 |
| #define APCH_STATE_CSTATE_DISABLED 0x00 |
| #define APCH_STATE_CSTATE_EOC 0x01 |
| #define APCH_STATE_CSTATE_FAST 0x02 |
| #define APCH_STATE_CSTATE_PRE 0x03 |
| |
| struct act8945a_charger { |
| struct power_supply *psy; |
| struct power_supply_desc desc; |
| struct regmap *regmap; |
| struct work_struct work; |
| |
| bool init_done; |
| struct gpio_desc *lbo_gpio; |
| struct gpio_desc *chglev_gpio; |
| }; |
| |
| static int act8945a_get_charger_state(struct regmap *regmap, int *val) |
| { |
| int ret; |
| unsigned int status, state; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); |
| if (ret < 0) |
| return ret; |
| |
| state &= APCH_STATE_CSTATE; |
| state >>= APCH_STATE_CSTATE_SHIFT; |
| |
| switch (state) { |
| case APCH_STATE_CSTATE_PRE: |
| case APCH_STATE_CSTATE_FAST: |
| *val = POWER_SUPPLY_STATUS_CHARGING; |
| break; |
| case APCH_STATE_CSTATE_EOC: |
| if (status & APCH_STATUS_CHGDAT) |
| *val = POWER_SUPPLY_STATUS_FULL; |
| else |
| *val = POWER_SUPPLY_STATUS_CHARGING; |
| break; |
| case APCH_STATE_CSTATE_DISABLED: |
| default: |
| if (!(status & APCH_STATUS_INDAT)) |
| *val = POWER_SUPPLY_STATUS_DISCHARGING; |
| else |
| *val = POWER_SUPPLY_STATUS_NOT_CHARGING; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int act8945a_get_charge_type(struct regmap *regmap, int *val) |
| { |
| int ret; |
| unsigned int status, state; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); |
| if (ret < 0) |
| return ret; |
| |
| state &= APCH_STATE_CSTATE; |
| state >>= APCH_STATE_CSTATE_SHIFT; |
| |
| switch (state) { |
| case APCH_STATE_CSTATE_PRE: |
| *val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; |
| break; |
| case APCH_STATE_CSTATE_FAST: |
| *val = POWER_SUPPLY_CHARGE_TYPE_FAST; |
| break; |
| case APCH_STATE_CSTATE_EOC: |
| *val = POWER_SUPPLY_CHARGE_TYPE_NONE; |
| break; |
| case APCH_STATE_CSTATE_DISABLED: |
| default: |
| if (!(status & APCH_STATUS_INDAT)) |
| *val = POWER_SUPPLY_CHARGE_TYPE_NONE; |
| else |
| *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int act8945a_get_battery_health(struct regmap *regmap, int *val) |
| { |
| int ret; |
| unsigned int status, state, config; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); |
| if (ret < 0) |
| return ret; |
| |
| state &= APCH_STATE_CSTATE; |
| state >>= APCH_STATE_CSTATE_SHIFT; |
| |
| switch (state) { |
| case APCH_STATE_CSTATE_DISABLED: |
| if (config & APCH_CFG_SUSCHG) { |
| *val = POWER_SUPPLY_HEALTH_UNKNOWN; |
| } else if (status & APCH_STATUS_INDAT) { |
| if (!(status & APCH_STATUS_TEMPDAT)) |
| *val = POWER_SUPPLY_HEALTH_OVERHEAT; |
| else if (status & APCH_STATUS_TIMRDAT) |
| *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; |
| else |
| *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE; |
| } else { |
| *val = POWER_SUPPLY_HEALTH_GOOD; |
| } |
| break; |
| case APCH_STATE_CSTATE_PRE: |
| case APCH_STATE_CSTATE_FAST: |
| case APCH_STATE_CSTATE_EOC: |
| default: |
| *val = POWER_SUPPLY_HEALTH_GOOD; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int act8945a_get_capacity_level(struct act8945a_charger *charger, |
| struct regmap *regmap, int *val) |
| { |
| int ret; |
| unsigned int status, state, config; |
| int lbo_level = gpiod_get_value(charger->lbo_gpio); |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); |
| if (ret < 0) |
| return ret; |
| |
| state &= APCH_STATE_CSTATE; |
| state >>= APCH_STATE_CSTATE_SHIFT; |
| |
| switch (state) { |
| case APCH_STATE_CSTATE_PRE: |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW; |
| break; |
| case APCH_STATE_CSTATE_FAST: |
| if (lbo_level) |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_HIGH; |
| else |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW; |
| break; |
| case APCH_STATE_CSTATE_EOC: |
| if (status & APCH_STATUS_CHGDAT) |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_FULL; |
| else |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; |
| break; |
| case APCH_STATE_CSTATE_DISABLED: |
| default: |
| if (config & APCH_CFG_SUSCHG) { |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; |
| } else { |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; |
| if (!(status & APCH_STATUS_INDAT)) { |
| if (!lbo_level) |
| *val = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; |
| } |
| } |
| break; |
| } |
| |
| return 0; |
| } |
| |
| #define MAX_CURRENT_USB_HIGH 450000 |
| #define MAX_CURRENT_USB_LOW 90000 |
| #define MAX_CURRENT_USB_PRE 45000 |
| /* |
| * Riset(K) = 2336 * (1V/Ichg(mA)) - 0.205 |
| * Riset = 2.43K |
| */ |
| #define MAX_CURRENT_AC_HIGH 886527 |
| #define MAX_CURRENT_AC_LOW 117305 |
| #define MAX_CURRENT_AC_HIGH_PRE 88653 |
| #define MAX_CURRENT_AC_LOW_PRE 11731 |
| |
| static int act8945a_get_current_max(struct act8945a_charger *charger, |
| struct regmap *regmap, int *val) |
| { |
| int ret; |
| unsigned int status, state; |
| unsigned int acin_state; |
| int chgin_level = gpiod_get_value(charger->chglev_gpio); |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state); |
| if (ret < 0) |
| return ret; |
| |
| acin_state = (state & APCH_STATE_ACINSTAT) >> 1; |
| |
| state &= APCH_STATE_CSTATE; |
| state >>= APCH_STATE_CSTATE_SHIFT; |
| |
| switch (state) { |
| case APCH_STATE_CSTATE_PRE: |
| if (acin_state) { |
| if (chgin_level) |
| *val = MAX_CURRENT_AC_HIGH_PRE; |
| else |
| *val = MAX_CURRENT_AC_LOW_PRE; |
| } else { |
| *val = MAX_CURRENT_USB_PRE; |
| } |
| break; |
| case APCH_STATE_CSTATE_FAST: |
| if (acin_state) { |
| if (chgin_level) |
| *val = MAX_CURRENT_AC_HIGH; |
| else |
| *val = MAX_CURRENT_AC_LOW; |
| } else { |
| if (chgin_level) |
| *val = MAX_CURRENT_USB_HIGH; |
| else |
| *val = MAX_CURRENT_USB_LOW; |
| } |
| break; |
| case APCH_STATE_CSTATE_EOC: |
| case APCH_STATE_CSTATE_DISABLED: |
| default: |
| *val = 0; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static enum power_supply_property act8945a_charger_props[] = { |
| POWER_SUPPLY_PROP_STATUS, |
| POWER_SUPPLY_PROP_CHARGE_TYPE, |
| POWER_SUPPLY_PROP_TECHNOLOGY, |
| POWER_SUPPLY_PROP_HEALTH, |
| POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
| POWER_SUPPLY_PROP_CURRENT_MAX, |
| POWER_SUPPLY_PROP_MODEL_NAME, |
| POWER_SUPPLY_PROP_MANUFACTURER |
| }; |
| |
| static int act8945a_charger_get_property(struct power_supply *psy, |
| enum power_supply_property prop, |
| union power_supply_propval *val) |
| { |
| struct act8945a_charger *charger = power_supply_get_drvdata(psy); |
| struct regmap *regmap = charger->regmap; |
| int ret = 0; |
| |
| switch (prop) { |
| case POWER_SUPPLY_PROP_STATUS: |
| ret = act8945a_get_charger_state(regmap, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_CHARGE_TYPE: |
| ret = act8945a_get_charge_type(regmap, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_TECHNOLOGY: |
| val->intval = POWER_SUPPLY_TECHNOLOGY_LION; |
| break; |
| case POWER_SUPPLY_PROP_HEALTH: |
| ret = act8945a_get_battery_health(regmap, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
| ret = act8945a_get_capacity_level(charger, |
| regmap, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_CURRENT_MAX: |
| ret = act8945a_get_current_max(charger, |
| regmap, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_MODEL_NAME: |
| val->strval = act8945a_charger_model; |
| break; |
| case POWER_SUPPLY_PROP_MANUFACTURER: |
| val->strval = act8945a_charger_manufacturer; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int act8945a_enable_interrupt(struct act8945a_charger *charger) |
| { |
| struct regmap *regmap = charger->regmap; |
| unsigned char ctrl; |
| int ret; |
| |
| ctrl = APCH_CTRL_CHGEOCOUT | APCH_CTRL_CHGEOCIN | |
| APCH_CTRL_INDIS | APCH_CTRL_INCON | |
| APCH_CTRL_TEMPOUT | APCH_CTRL_TEMPIN | |
| APCH_CTRL_TIMRPRE | APCH_CTRL_TIMRTOT; |
| ret = regmap_write(regmap, ACT8945A_APCH_CTRL, ctrl); |
| if (ret) |
| return ret; |
| |
| ctrl = APCH_STATUS_CHGSTAT | APCH_STATUS_INSTAT | |
| APCH_STATUS_TEMPSTAT | APCH_STATUS_TIMRSTAT; |
| ret = regmap_write(regmap, ACT8945A_APCH_STATUS, ctrl); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static unsigned int act8945a_set_supply_type(struct act8945a_charger *charger, |
| unsigned int *type) |
| { |
| unsigned int status, state; |
| int ret; |
| |
| ret = regmap_read(charger->regmap, ACT8945A_APCH_STATUS, &status); |
| if (ret < 0) |
| return ret; |
| |
| ret = regmap_read(charger->regmap, ACT8945A_APCH_STATE, &state); |
| if (ret < 0) |
| return ret; |
| |
| if (status & APCH_STATUS_INDAT) { |
| if (state & APCH_STATE_ACINSTAT) |
| *type = POWER_SUPPLY_TYPE_MAINS; |
| else |
| *type = POWER_SUPPLY_TYPE_USB; |
| } else { |
| *type = POWER_SUPPLY_TYPE_BATTERY; |
| } |
| |
| return 0; |
| } |
| |
| static void act8945a_work(struct work_struct *work) |
| { |
| struct act8945a_charger *charger = |
| container_of(work, struct act8945a_charger, work); |
| |
| act8945a_set_supply_type(charger, &charger->desc.type); |
| |
| power_supply_changed(charger->psy); |
| } |
| |
| static irqreturn_t act8945a_status_changed(int irq, void *dev_id) |
| { |
| struct act8945a_charger *charger = dev_id; |
| |
| if (charger->init_done) |
| schedule_work(&charger->work); |
| |
| return IRQ_HANDLED; |
| } |
| |
| #define DEFAULT_TOTAL_TIME_OUT 3 |
| #define DEFAULT_PRE_TIME_OUT 40 |
| #define DEFAULT_INPUT_OVP_THRESHOLD 6600 |
| |
| static int act8945a_charger_config(struct device *dev, |
| struct act8945a_charger *charger) |
| { |
| struct device_node *np = dev->of_node; |
| struct regmap *regmap = charger->regmap; |
| |
| u32 total_time_out; |
| u32 pre_time_out; |
| u32 input_voltage_threshold; |
| int err, ret; |
| |
| unsigned int tmp; |
| unsigned int value = 0; |
| |
| if (!np) { |
| dev_err(dev, "no charger of node\n"); |
| return -EINVAL; |
| } |
| |
| ret = regmap_read(regmap, ACT8945A_APCH_CFG, &tmp); |
| if (ret) |
| return ret; |
| |
| if (tmp & APCH_CFG_SUSCHG) { |
| value |= APCH_CFG_SUSCHG; |
| dev_info(dev, "have been suspended\n"); |
| } |
| |
| charger->lbo_gpio = devm_gpiod_get_optional(dev, "active-semi,lbo", |
| GPIOD_IN); |
| if (IS_ERR(charger->lbo_gpio)) { |
| err = PTR_ERR(charger->lbo_gpio); |
| dev_err(dev, "unable to claim gpio \"lbo\": %d\n", err); |
| return err; |
| } |
| |
| ret = devm_request_irq(dev, gpiod_to_irq(charger->lbo_gpio), |
| act8945a_status_changed, |
| (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING), |
| "act8945a_lbo_detect", charger); |
| if (ret) |
| dev_info(dev, "failed to request gpio \"lbo\" IRQ\n"); |
| |
| charger->chglev_gpio = devm_gpiod_get_optional(dev, |
| "active-semi,chglev", |
| GPIOD_IN); |
| if (IS_ERR(charger->chglev_gpio)) { |
| err = PTR_ERR(charger->chglev_gpio); |
| dev_err(dev, "unable to claim gpio \"chglev\": %d\n", err); |
| return err; |
| } |
| |
| if (of_property_read_u32(np, |
| "active-semi,input-voltage-threshold-microvolt", |
| &input_voltage_threshold)) |
| input_voltage_threshold = DEFAULT_INPUT_OVP_THRESHOLD; |
| |
| if (of_property_read_u32(np, |
| "active-semi,precondition-timeout", |
| &pre_time_out)) |
| pre_time_out = DEFAULT_PRE_TIME_OUT; |
| |
| if (of_property_read_u32(np, "active-semi,total-timeout", |
| &total_time_out)) |
| total_time_out = DEFAULT_TOTAL_TIME_OUT; |
| |
| switch (input_voltage_threshold) { |
| case 8000: |
| value |= APCH_CFG_OVPSET_8V; |
| break; |
| case 7500: |
| value |= APCH_CFG_OVPSET_7V5; |
| break; |
| case 7000: |
| value |= APCH_CFG_OVPSET_7V; |
| break; |
| case 6600: |
| default: |
| value |= APCH_CFG_OVPSET_6V6; |
| break; |
| } |
| |
| switch (pre_time_out) { |
| case 60: |
| value |= APCH_CFG_PRETIMO_60_MIN; |
| break; |
| case 80: |
| value |= APCH_CFG_PRETIMO_80_MIN; |
| break; |
| case 0: |
| value |= APCH_CFG_PRETIMO_DISABLED; |
| break; |
| case 40: |
| default: |
| value |= APCH_CFG_PRETIMO_40_MIN; |
| break; |
| } |
| |
| switch (total_time_out) { |
| case 4: |
| value |= APCH_CFG_TOTTIMO_4_HOUR; |
| break; |
| case 5: |
| value |= APCH_CFG_TOTTIMO_5_HOUR; |
| break; |
| case 0: |
| value |= APCH_CFG_TOTTIMO_DISABLED; |
| break; |
| case 3: |
| default: |
| value |= APCH_CFG_TOTTIMO_3_HOUR; |
| break; |
| } |
| |
| return regmap_write(regmap, ACT8945A_APCH_CFG, value); |
| } |
| |
| static int act8945a_charger_probe(struct platform_device *pdev) |
| { |
| struct act8945a_charger *charger; |
| struct power_supply_config psy_cfg = {}; |
| int irq, ret; |
| |
| charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); |
| if (!charger) |
| return -ENOMEM; |
| |
| charger->regmap = dev_get_regmap(pdev->dev.parent, NULL); |
| if (!charger->regmap) { |
| dev_err(&pdev->dev, "Parent did not provide regmap\n"); |
| return -EINVAL; |
| } |
| |
| ret = act8945a_charger_config(&pdev->dev, charger); |
| if (ret) |
| return ret; |
| |
| irq = of_irq_get(pdev->dev.of_node, 0); |
| if (irq <= 0) { |
| dev_err(&pdev->dev, "failed to find IRQ number\n"); |
| return irq ?: -ENXIO; |
| } |
| |
| ret = devm_request_irq(&pdev->dev, irq, act8945a_status_changed, |
| IRQF_TRIGGER_FALLING, "act8945a_interrupt", |
| charger); |
| if (ret) { |
| dev_err(&pdev->dev, "failed to request nIRQ pin IRQ\n"); |
| return ret; |
| } |
| |
| charger->desc.name = "act8945a-charger"; |
| charger->desc.get_property = act8945a_charger_get_property; |
| charger->desc.properties = act8945a_charger_props; |
| charger->desc.num_properties = ARRAY_SIZE(act8945a_charger_props); |
| |
| ret = act8945a_set_supply_type(charger, &charger->desc.type); |
| if (ret) |
| return -EINVAL; |
| |
| psy_cfg.of_node = pdev->dev.of_node; |
| psy_cfg.drv_data = charger; |
| |
| charger->psy = devm_power_supply_register(&pdev->dev, |
| &charger->desc, |
| &psy_cfg); |
| if (IS_ERR(charger->psy)) { |
| dev_err(&pdev->dev, "failed to register power supply\n"); |
| return PTR_ERR(charger->psy); |
| } |
| |
| platform_set_drvdata(pdev, charger); |
| |
| INIT_WORK(&charger->work, act8945a_work); |
| |
| ret = act8945a_enable_interrupt(charger); |
| if (ret) |
| return -EIO; |
| |
| charger->init_done = true; |
| |
| return 0; |
| } |
| |
| static int act8945a_charger_remove(struct platform_device *pdev) |
| { |
| struct act8945a_charger *charger = platform_get_drvdata(pdev); |
| |
| charger->init_done = false; |
| cancel_work_sync(&charger->work); |
| |
| return 0; |
| } |
| |
| static struct platform_driver act8945a_charger_driver = { |
| .driver = { |
| .name = "act8945a-charger", |
| }, |
| .probe = act8945a_charger_probe, |
| .remove = act8945a_charger_remove, |
| }; |
| module_platform_driver(act8945a_charger_driver); |
| |
| MODULE_DESCRIPTION("Active-semi ACT8945A ActivePath charger driver"); |
| MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); |
| MODULE_LICENSE("GPL"); |