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path: root/drivers/power/max77693_charger.c
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Diffstat (limited to 'drivers/power/max77693_charger.c')
-rw-r--r--drivers/power/max77693_charger.c131
1 files changed, 74 insertions, 57 deletions
diff --git a/drivers/power/max77693_charger.c b/drivers/power/max77693_charger.c
index b042970fdeaf..754879eb59f6 100644
--- a/drivers/power/max77693_charger.c
+++ b/drivers/power/max77693_charger.c
@@ -22,14 +22,14 @@
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-private.h>
-static const char *max77693_charger_name = "max77693-charger";
+#define MAX77693_CHARGER_NAME "max77693-charger"
static const char *max77693_charger_model = "MAX77693";
static const char *max77693_charger_manufacturer = "Maxim Integrated";
struct max77693_charger {
struct device *dev;
struct max77693_dev *max77693;
- struct power_supply charger;
+ struct power_supply *charger;
u32 constant_volt;
u32 min_system_volt;
@@ -38,13 +38,14 @@ struct max77693_charger {
u32 charge_input_threshold_volt;
};
-static int max77693_get_charger_state(struct regmap *regmap)
+static int max77693_get_charger_state(struct regmap *regmap, int *val)
{
- int state;
+ int ret;
unsigned int data;
- if (regmap_read(regmap, MAX77693_CHG_REG_CHG_DETAILS_01, &data) < 0)
- return POWER_SUPPLY_STATUS_UNKNOWN;
+ ret = regmap_read(regmap, MAX77693_CHG_REG_CHG_DETAILS_01, &data);
+ if (ret < 0)
+ return ret;
data &= CHG_DETAILS_01_CHG_MASK;
data >>= CHG_DETAILS_01_CHG_SHIFT;
@@ -56,35 +57,36 @@ static int max77693_get_charger_state(struct regmap *regmap)
case MAX77693_CHARGING_TOP_OFF:
/* In high temp the charging current is reduced, but still charging */
case MAX77693_CHARGING_HIGH_TEMP:
- state = POWER_SUPPLY_STATUS_CHARGING;
+ *val = POWER_SUPPLY_STATUS_CHARGING;
break;
case MAX77693_CHARGING_DONE:
- state = POWER_SUPPLY_STATUS_FULL;
+ *val = POWER_SUPPLY_STATUS_FULL;
break;
case MAX77693_CHARGING_TIMER_EXPIRED:
case MAX77693_CHARGING_THERMISTOR_SUSPEND:
- state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ *val = POWER_SUPPLY_STATUS_NOT_CHARGING;
break;
case MAX77693_CHARGING_OFF:
case MAX77693_CHARGING_OVER_TEMP:
case MAX77693_CHARGING_WATCHDOG_EXPIRED:
- state = POWER_SUPPLY_STATUS_DISCHARGING;
+ *val = POWER_SUPPLY_STATUS_DISCHARGING;
break;
case MAX77693_CHARGING_RESERVED:
default:
- state = POWER_SUPPLY_STATUS_UNKNOWN;
+ *val = POWER_SUPPLY_STATUS_UNKNOWN;
}
- return state;
+ return 0;
}
-static int max77693_get_charge_type(struct regmap *regmap)
+static int max77693_get_charge_type(struct regmap *regmap, int *val)
{
- int state;
+ int ret;
unsigned int data;
- if (regmap_read(regmap, MAX77693_CHG_REG_CHG_DETAILS_01, &data) < 0)
- return POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ ret = regmap_read(regmap, MAX77693_CHG_REG_CHG_DETAILS_01, &data);
+ if (ret < 0)
+ return ret;
data &= CHG_DETAILS_01_CHG_MASK;
data >>= CHG_DETAILS_01_CHG_SHIFT;
@@ -96,13 +98,13 @@ static int max77693_get_charge_type(struct regmap *regmap)
* 100 and 250 mA. It is higher than prequalification current.
*/
case MAX77693_CHARGING_TOP_OFF:
- state = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ *val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
case MAX77693_CHARGING_FAST_CONST_CURRENT:
case MAX77693_CHARGING_FAST_CONST_VOLTAGE:
/* In high temp the charging current is reduced, but still charging */
case MAX77693_CHARGING_HIGH_TEMP:
- state = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ *val = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case MAX77693_CHARGING_DONE:
case MAX77693_CHARGING_TIMER_EXPIRED:
@@ -110,14 +112,14 @@ static int max77693_get_charge_type(struct regmap *regmap)
case MAX77693_CHARGING_OFF:
case MAX77693_CHARGING_OVER_TEMP:
case MAX77693_CHARGING_WATCHDOG_EXPIRED:
- state = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
break;
case MAX77693_CHARGING_RESERVED:
default:
- state = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
}
- return state;
+ return 0;
}
/*
@@ -129,69 +131,78 @@ static int max77693_get_charge_type(struct regmap *regmap)
* - POWER_SUPPLY_HEALTH_UNKNOWN
* - POWER_SUPPLY_HEALTH_UNSPEC_FAILURE
*/
-static int max77693_get_battery_health(struct regmap *regmap)
+static int max77693_get_battery_health(struct regmap *regmap, int *val)
{
- int state;
+ int ret;
unsigned int data;
- if (regmap_read(regmap, MAX77693_CHG_REG_CHG_DETAILS_01, &data) < 0)
- return POWER_SUPPLY_HEALTH_UNKNOWN;
+ ret = regmap_read(regmap, MAX77693_CHG_REG_CHG_DETAILS_01, &data);
+ if (ret < 0)
+ return ret;
data &= CHG_DETAILS_01_BAT_MASK;
data >>= CHG_DETAILS_01_BAT_SHIFT;
switch (data) {
case MAX77693_BATTERY_NOBAT:
- state = POWER_SUPPLY_HEALTH_DEAD;
+ *val = POWER_SUPPLY_HEALTH_DEAD;
break;
case MAX77693_BATTERY_PREQUALIFICATION:
case MAX77693_BATTERY_GOOD:
case MAX77693_BATTERY_LOWVOLTAGE:
- state = POWER_SUPPLY_HEALTH_GOOD;
+ *val = POWER_SUPPLY_HEALTH_GOOD;
break;
case MAX77693_BATTERY_TIMER_EXPIRED:
/*
* Took longer to charge than expected, charging suspended.
* Damaged battery?
*/
- state = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
+ *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
break;
case MAX77693_BATTERY_OVERVOLTAGE:
- state = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
break;
case MAX77693_BATTERY_OVERCURRENT:
- state = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ *val = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
break;
case MAX77693_BATTERY_RESERVED:
default:
- state = POWER_SUPPLY_HEALTH_UNKNOWN;
+ *val = POWER_SUPPLY_HEALTH_UNKNOWN;
break;
}
- return state;
+ return 0;
}
-static int max77693_get_present(struct regmap *regmap)
+static int max77693_get_present(struct regmap *regmap, int *val)
{
unsigned int data;
+ int ret;
/*
* Read CHG_INT_OK register. High DETBAT bit here should be
* equal to value 0x0 in CHG_DETAILS_01/BAT field.
*/
- regmap_read(regmap, MAX77693_CHG_REG_CHG_INT_OK, &data);
- if (data & CHG_INT_OK_DETBAT_MASK)
- return 0;
- return 1;
+ ret = regmap_read(regmap, MAX77693_CHG_REG_CHG_INT_OK, &data);
+ if (ret < 0)
+ return ret;
+
+ *val = (data & CHG_INT_OK_DETBAT_MASK) ? 0 : 1;
+
+ return 0;
}
-static int max77693_get_online(struct regmap *regmap)
+static int max77693_get_online(struct regmap *regmap, int *val)
{
unsigned int data;
+ int ret;
+
+ ret = regmap_read(regmap, MAX77693_CHG_REG_CHG_INT_OK, &data);
+ if (ret < 0)
+ return ret;
+
+ *val = (data & CHG_INT_OK_CHGIN_MASK) ? 1 : 0;
- regmap_read(regmap, MAX77693_CHG_REG_CHG_INT_OK, &data);
- if (data & CHG_INT_OK_CHGIN_MASK)
- return 1;
return 0;
}
@@ -209,27 +220,25 @@ static int max77693_charger_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
- struct max77693_charger *chg = container_of(psy,
- struct max77693_charger,
- charger);
+ struct max77693_charger *chg = power_supply_get_drvdata(psy);
struct regmap *regmap = chg->max77693->regmap;
int ret = 0;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
- val->intval = max77693_get_charger_state(regmap);
+ ret = max77693_get_charger_state(regmap, &val->intval);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
- val->intval = max77693_get_charge_type(regmap);
+ ret = max77693_get_charge_type(regmap, &val->intval);
break;
case POWER_SUPPLY_PROP_HEALTH:
- val->intval = max77693_get_battery_health(regmap);
+ ret = max77693_get_battery_health(regmap, &val->intval);
break;
case POWER_SUPPLY_PROP_PRESENT:
- val->intval = max77693_get_present(regmap);
+ ret = max77693_get_present(regmap, &val->intval);
break;
case POWER_SUPPLY_PROP_ONLINE:
- val->intval = max77693_get_online(regmap);
+ ret = max77693_get_online(regmap, &val->intval);
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = max77693_charger_model;
@@ -244,6 +253,14 @@ static int max77693_charger_get_property(struct power_supply *psy,
return ret;
}
+static const struct power_supply_desc max77693_charger_desc = {
+ .name = MAX77693_CHARGER_NAME,
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = max77693_charger_props,
+ .num_properties = ARRAY_SIZE(max77693_charger_props),
+ .get_property = max77693_charger_get_property,
+};
+
static ssize_t device_attr_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count,
int (*fn)(struct max77693_charger *, unsigned long))
@@ -659,6 +676,7 @@ static int max77693_dt_init(struct device *dev, struct max77693_charger *chg)
static int max77693_charger_probe(struct platform_device *pdev)
{
struct max77693_charger *chg;
+ struct power_supply_config psy_cfg = {};
struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
int ret;
@@ -678,11 +696,7 @@ static int max77693_charger_probe(struct platform_device *pdev)
if (ret)
return ret;
- chg->charger.name = max77693_charger_name;
- chg->charger.type = POWER_SUPPLY_TYPE_BATTERY;
- chg->charger.properties = max77693_charger_props;
- chg->charger.num_properties = ARRAY_SIZE(max77693_charger_props);
- chg->charger.get_property = max77693_charger_get_property;
+ psy_cfg.drv_data = chg;
ret = device_create_file(&pdev->dev, &dev_attr_fast_charge_timer);
if (ret) {
@@ -703,9 +717,12 @@ static int max77693_charger_probe(struct platform_device *pdev)
goto err;
}
- ret = power_supply_register(&pdev->dev, &chg->charger);
- if (ret) {
+ chg->charger = power_supply_register(&pdev->dev,
+ &max77693_charger_desc,
+ &psy_cfg);
+ if (IS_ERR(chg->charger)) {
dev_err(&pdev->dev, "failed: power supply register\n");
+ ret = PTR_ERR(chg->charger);
goto err;
}
@@ -727,7 +744,7 @@ static int max77693_charger_remove(struct platform_device *pdev)
device_remove_file(&pdev->dev, &dev_attr_top_off_threshold_current);
device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer);
- power_supply_unregister(&chg->charger);
+ power_supply_unregister(chg->charger);
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.