mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
662 lines
16 KiB
662 lines
16 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* Power supply driver for the Active-semi ACT8945A PMIC |
|
* |
|
* Copyright (C) 2015 Atmel Corporation |
|
* |
|
* Author: Wenyou Yang <[email protected]> |
|
*/ |
|
#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 <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|