diff options
Diffstat (limited to 'drivers/power/supply/cpcap-charger.c')
| -rw-r--r-- | drivers/power/supply/cpcap-charger.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c index a04354c8f1e3..40d96b8c00a8 100644 --- a/drivers/power/supply/cpcap-charger.c +++ b/drivers/power/supply/cpcap-charger.c @@ -172,6 +172,7 @@ struct cpcap_charger_ints_state { static enum power_supply_property cpcap_charger_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_CURRENT_NOW, }; @@ -235,6 +236,9 @@ static int cpcap_charger_get_property(struct power_supply *psy, case POWER_SUPPLY_PROP_STATUS: val->intval = ddata->status; break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + val->intval = ddata->voltage; + break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: if (ddata->status == POWER_SUPPLY_STATUS_CHARGING) val->intval = cpcap_charger_get_charge_voltage(ddata) * @@ -259,6 +263,83 @@ static int cpcap_charger_get_property(struct power_supply *psy, return 0; } +static int cpcap_charger_match_voltage(int voltage) +{ + switch (voltage) { + case 0 ... 4100000 - 1: return 3800000; + case 4100000 ... 4120000 - 1: return 4100000; + case 4120000 ... 4150000 - 1: return 4120000; + case 4150000 ... 4170000 - 1: return 4150000; + case 4170000 ... 4200000 - 1: return 4170000; + case 4200000 ... 4230000 - 1: return 4200000; + case 4230000 ... 4250000 - 1: return 4230000; + case 4250000 ... 4270000 - 1: return 4250000; + case 4270000 ... 4300000 - 1: return 4270000; + case 4300000 ... 4330000 - 1: return 4300000; + case 4330000 ... 4350000 - 1: return 4330000; + case 4350000 ... 4380000 - 1: return 4350000; + case 4380000 ... 4400000 - 1: return 4380000; + case 4400000 ... 4420000 - 1: return 4400000; + case 4420000 ... 4440000 - 1: return 4420000; + case 4440000: return 4440000; + default: return 0; + } +} + +static int +cpcap_charger_get_bat_const_charge_voltage(struct cpcap_charger_ddata *ddata) +{ + union power_supply_propval prop; + struct power_supply *battery; + int voltage = ddata->voltage; + int error; + + battery = power_supply_get_by_name("battery"); + if (battery) { + error = power_supply_get_property(battery, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + &prop); + if (!error) + voltage = prop.intval; + } + + return voltage; +} + +static int cpcap_charger_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct cpcap_charger_ddata *ddata = dev_get_drvdata(psy->dev.parent); + int voltage, batvolt; + + switch (psp) { + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + voltage = cpcap_charger_match_voltage(val->intval); + batvolt = cpcap_charger_get_bat_const_charge_voltage(ddata); + if (voltage > batvolt) + voltage = batvolt; + ddata->voltage = voltage; + schedule_delayed_work(&ddata->detect_work, 0); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int cpcap_charger_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + return 1; + default: + return 0; + } +} + static void cpcap_charger_set_cable_path(struct cpcap_charger_ddata *ddata, bool enabled) { @@ -724,6 +805,8 @@ static const struct power_supply_desc cpcap_charger_usb_desc = { .properties = cpcap_charger_props, .num_properties = ARRAY_SIZE(cpcap_charger_props), .get_property = cpcap_charger_get_property, + .set_property = cpcap_charger_set_property, + .property_is_writeable = cpcap_charger_property_is_writeable, }; #ifdef CONFIG_OF |