diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c index c903c588b361..f71cc90fea12 100644 --- a/drivers/power/supply/axp20x_battery.c +++ b/drivers/power/supply/axp20x_battery.c @@ -17,6 +17,7 @@ * GNU General Public License for more details. */ +#include #include #include #include @@ -32,9 +33,19 @@ #include #define AXP20X_PWR_STATUS_BAT_CHARGING BIT(2) +#define AXP717_PWR_STATUS_MASK GENMASK(6, 5) +#define AXP717_PWR_STATUS_BAT_STANDBY 0 +#define AXP717_PWR_STATUS_BAT_CHRG 1 +#define AXP717_PWR_STATUS_BAT_DISCHRG 2 #define AXP20X_PWR_OP_BATT_PRESENT BIT(5) #define AXP20X_PWR_OP_BATT_ACTIVATED BIT(3) +#define AXP717_PWR_OP_BATT_PRESENT BIT(3) + +#define AXP717_BATT_PMU_FAULT_MASK GENMASK(2, 0) +#define AXP717_BATT_UVLO_2_5V BIT(2) +#define AXP717_BATT_OVER_TEMP BIT(1) +#define AXP717_BATT_UNDER_TEMP BIT(0) #define AXP209_FG_PERCENT GENMASK(6, 0) #define AXP22X_FG_VALID BIT(7) @@ -49,11 +60,34 @@ #define AXP22X_CHRG_CTRL1_TGT_4_22V (1 << 5) #define AXP22X_CHRG_CTRL1_TGT_4_24V (3 << 5) +#define AXP717_CHRG_ENABLE BIT(1) +#define AXP717_CHRG_CV_VOLT_MASK GENMASK(2, 0) +#define AXP717_CHRG_CV_4_0V 0 +#define AXP717_CHRG_CV_4_1V 1 +#define AXP717_CHRG_CV_4_2V 2 +#define AXP717_CHRG_CV_4_35V 3 +#define AXP717_CHRG_CV_4_4V 4 +/* Values 5 and 6 reserved. */ +#define AXP717_CHRG_CV_5_0V 7 + #define AXP813_CHRG_CTRL1_TGT_4_35V (3 << 5) #define AXP20X_CHRG_CTRL1_TGT_CURR GENMASK(3, 0) +#define AXP717_ICC_CHARGER_LIM_MASK GENMASK(5, 0) + +#define AXP717_ITERM_CHG_LIM_MASK GENMASK(3, 0) +#define AXP717_ITERM_CC_STEP 64000 #define AXP20X_V_OFF_MASK GENMASK(2, 0) +#define AXP717_V_OFF_MASK GENMASK(6, 4) + +#define AXP717_BAT_VMIN_MIN_UV 2600000 +#define AXP717_BAT_VMIN_MAX_UV 3300000 +#define AXP717_BAT_VMIN_STEP 100000 +#define AXP717_BAT_CV_MIN_UV 4000000 +#define AXP717_BAT_CV_MAX_UV 5000000 +#define AXP717_BAT_CC_MIN_UA 0 +#define AXP717_BAT_CC_MAX_UA 3008000 struct axp20x_batt_ps; @@ -143,6 +177,39 @@ static int axp22x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt, return 0; } +static int axp717_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt, + int *val) +{ + int ret, reg; + + ret = regmap_read(axp20x_batt->regmap, AXP717_CV_CHG_SET, ®); + if (ret) + return ret; + + switch (reg & AXP717_CHRG_CV_VOLT_MASK) { + case AXP717_CHRG_CV_4_0V: + *val = 4000000; + return 0; + case AXP717_CHRG_CV_4_1V: + *val = 4100000; + return 0; + case AXP717_CHRG_CV_4_2V: + *val = 4200000; + return 0; + case AXP717_CHRG_CV_4_35V: + *val = 4350000; + return 0; + case AXP717_CHRG_CV_4_4V: + *val = 4400000; + return 0; + case AXP717_CHRG_CV_5_0V: + *val = 5000000; + return 0; + default: + return -EINVAL; + } +} + static int axp813_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt, int *val) { @@ -188,6 +255,21 @@ static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp, return 0; } +static int axp717_get_constant_charge_current(struct axp20x_batt_ps *axp, + int *val) +{ + int ret; + + ret = regmap_read(axp->regmap, AXP717_ICC_CHG_SET, val); + if (ret) + return ret; + + *val = FIELD_GET(AXP717_ICC_CHARGER_LIM_MASK, *val) * + axp->data->ccc_scale; + + return 0; +} + static int axp20x_battery_get_prop(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) @@ -340,6 +422,171 @@ static int axp20x_battery_get_prop(struct power_supply *psy, return 0; } +static int axp717_battery_get_prop(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct axp20x_batt_ps *axp20x_batt = power_supply_get_drvdata(psy); + int ret = 0, reg; + + switch (psp) { + case POWER_SUPPLY_PROP_PRESENT: + case POWER_SUPPLY_PROP_ONLINE: + ret = regmap_read(axp20x_batt->regmap, AXP717_ON_INDICATE, + ®); + if (ret) + return ret; + + val->intval = FIELD_GET(AXP717_PWR_OP_BATT_PRESENT, reg); + return 0; + + case POWER_SUPPLY_PROP_STATUS: + ret = regmap_read(axp20x_batt->regmap, AXP717_PMU_STATUS_2, + ®); + if (ret) + return ret; + + switch (FIELD_GET(AXP717_PWR_STATUS_MASK, reg)) { + case AXP717_PWR_STATUS_BAT_STANDBY: + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + return 0; + + case AXP717_PWR_STATUS_BAT_CHRG: + val->intval = POWER_SUPPLY_STATUS_CHARGING; + return 0; + + case AXP717_PWR_STATUS_BAT_DISCHRG: + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + return 0; + + default: + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + return 0; + } + + /* + * If a fault is detected it must also be cleared; if the + * condition persists it should reappear (This is an + * assumption, it's actually not documented). A restart was + * not sufficient to clear the bit in testing despite the + * register listed as POR. + */ + case POWER_SUPPLY_PROP_HEALTH: + ret = regmap_read(axp20x_batt->regmap, AXP717_PMU_FAULT, + ®); + if (ret) + return ret; + + switch (reg & AXP717_BATT_PMU_FAULT_MASK) { + case AXP717_BATT_UVLO_2_5V: + val->intval = POWER_SUPPLY_HEALTH_DEAD; + regmap_update_bits(axp20x_batt->regmap, + AXP717_PMU_FAULT, + AXP717_BATT_UVLO_2_5V, + AXP717_BATT_UVLO_2_5V); + return 0; + + case AXP717_BATT_OVER_TEMP: + val->intval = POWER_SUPPLY_HEALTH_HOT; + regmap_update_bits(axp20x_batt->regmap, + AXP717_PMU_FAULT, + AXP717_BATT_OVER_TEMP, + AXP717_BATT_OVER_TEMP); + return 0; + + case AXP717_BATT_UNDER_TEMP: + val->intval = POWER_SUPPLY_HEALTH_COLD; + regmap_update_bits(axp20x_batt->regmap, + AXP717_PMU_FAULT, + AXP717_BATT_UNDER_TEMP, + AXP717_BATT_UNDER_TEMP); + return 0; + + default: + val->intval = POWER_SUPPLY_HEALTH_GOOD; + return 0; + } + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + ret = axp717_get_constant_charge_current(axp20x_batt, + &val->intval); + if (ret) + return ret; + return 0; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + /* + * The offset of this value is currently unknown and is + * not documented in the datasheet. Based on + * observation it's assumed to be somewhere around + * 450ma. I will leave the value raw for now. + */ + ret = iio_read_channel_processed(axp20x_batt->batt_chrg_i, &val->intval); + if (ret) + return ret; + /* IIO framework gives mA but Power Supply framework gives uA */ + val->intval *= 1000; + return 0; + + case POWER_SUPPLY_PROP_CAPACITY: + ret = regmap_read(axp20x_batt->regmap, AXP717_ON_INDICATE, + ®); + if (ret) + return ret; + + if (!FIELD_GET(AXP717_PWR_OP_BATT_PRESENT, reg)) + return -ENODEV; + + ret = regmap_read(axp20x_batt->regmap, + AXP717_BATT_PERCENT_DATA, ®); + if (ret) + return ret; + + /* + * Fuel Gauge data takes 7 bits but the stored value seems to be + * directly the raw percentage without any scaling to 7 bits. + */ + val->intval = reg & AXP209_FG_PERCENT; + return 0; + + case POWER_SUPPLY_PROP_VOLTAGE_MAX: + return axp20x_batt->data->get_max_voltage(axp20x_batt, + &val->intval); + + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + ret = regmap_read(axp20x_batt->regmap, + AXP717_VSYS_V_POWEROFF, ®); + if (ret) + return ret; + + val->intval = AXP717_BAT_VMIN_MIN_UV + AXP717_BAT_VMIN_STEP * + (reg & AXP717_V_OFF_MASK); + return 0; + + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = iio_read_channel_processed(axp20x_batt->batt_v, + &val->intval); + if (ret) + return ret; + + /* IIO framework gives mV but Power Supply framework gives uV */ + val->intval *= 1000; + return 0; + + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = regmap_read(axp20x_batt->regmap, + AXP717_ITERM_CHG_SET, ®); + if (ret) + return ret; + + val->intval = (reg & AXP717_ITERM_CHG_LIM_MASK) * AXP717_ITERM_CC_STEP; + return 0; + + default: + return -EINVAL; + } +} + static int axp22x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt, int val) { @@ -396,6 +643,35 @@ static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt, AXP20X_CHRG_CTRL1_TGT_VOLT, val); } +static int axp717_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt, + int val) +{ + switch (val) { + case 4000000: + val = AXP717_CHRG_CV_4_0V; + break; + + case 4100000: + val = AXP717_CHRG_CV_4_1V; + break; + + case 4200000: + val = AXP717_CHRG_CV_4_2V; + break; + + default: + /* + * AXP717 can go up to 4.35, 4.4, and 5.0 volts which + * seem too high for lithium batteries, so do not allow. + */ + return -EINVAL; + } + + return regmap_update_bits(axp20x_batt->regmap, + AXP717_CV_CHG_SET, + AXP717_CHRG_CV_VOLT_MASK, val); +} + static int axp20x_set_constant_charge_current(struct axp20x_batt_ps *axp_batt, int charge_current) { @@ -412,6 +688,24 @@ static int axp20x_set_constant_charge_current(struct axp20x_batt_ps *axp_batt, AXP20X_CHRG_CTRL1_TGT_CURR, charge_current); } +static int axp717_set_constant_charge_current(struct axp20x_batt_ps *axp, + int charge_current) +{ + int val; + + if (charge_current > axp->max_ccc) + return -EINVAL; + + if (charge_current > AXP717_BAT_CC_MAX_UA || charge_current < 0) + return -EINVAL; + + val = (charge_current - axp->data->ccc_offset) / + axp->data->ccc_scale; + + return regmap_update_bits(axp->regmap, AXP717_ICC_CHG_SET, + AXP717_ICC_CHARGER_LIM_MASK, val); +} + static int axp20x_set_max_constant_charge_current(struct axp20x_batt_ps *axp, int charge_current) { @@ -456,6 +750,19 @@ static int axp20x_set_voltage_min_design(struct axp20x_batt_ps *axp_batt, AXP20X_V_OFF_MASK, val1); } +static int axp717_set_voltage_min_design(struct axp20x_batt_ps *axp_batt, + int min_voltage) +{ + int val1 = (min_voltage - AXP717_BAT_VMIN_MIN_UV) / AXP717_BAT_VMIN_STEP; + + if (val1 < 0 || val1 > AXP717_V_OFF_MASK) + return -EINVAL; + + return regmap_update_bits(axp_batt->regmap, + AXP717_VSYS_V_POWEROFF, + AXP717_V_OFF_MASK, val1); +} + static int axp20x_battery_set_prop(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) @@ -492,6 +799,42 @@ static int axp20x_battery_set_prop(struct power_supply *psy, } } +static int axp717_battery_set_prop(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct axp20x_batt_ps *axp20x_batt = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + return axp717_set_voltage_min_design(axp20x_batt, val->intval); + + case POWER_SUPPLY_PROP_VOLTAGE_MAX: + return axp20x_batt->data->set_max_voltage(axp20x_batt, val->intval); + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + return axp717_set_constant_charge_current(axp20x_batt, + val->intval); + case POWER_SUPPLY_PROP_STATUS: + switch (val->intval) { + case POWER_SUPPLY_STATUS_CHARGING: + return regmap_update_bits(axp20x_batt->regmap, + AXP717_MODULE_EN_CONTROL_2, + AXP717_CHRG_ENABLE, + AXP717_CHRG_ENABLE); + + case POWER_SUPPLY_STATUS_DISCHARGING: + case POWER_SUPPLY_STATUS_NOT_CHARGING: + return regmap_update_bits(axp20x_batt->regmap, + AXP717_MODULE_EN_CONTROL_2, + AXP717_CHRG_ENABLE, 0); + } + return -EINVAL; + default: + return -EINVAL; + } +} + static enum power_supply_property axp20x_battery_props[] = { POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_ONLINE, @@ -506,6 +849,20 @@ static enum power_supply_property axp20x_battery_props[] = { POWER_SUPPLY_PROP_CAPACITY, }; +static enum power_supply_property axp717_battery_props[] = { + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_VOLTAGE_MAX, + POWER_SUPPLY_PROP_VOLTAGE_MIN, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, +}; + static int axp20x_battery_prop_writeable(struct power_supply *psy, enum power_supply_property psp) { @@ -516,6 +873,15 @@ static int axp20x_battery_prop_writeable(struct power_supply *psy, psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX; } +static int axp717_battery_prop_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return psp == POWER_SUPPLY_PROP_STATUS || + psp == POWER_SUPPLY_PROP_VOLTAGE_MIN || + psp == POWER_SUPPLY_PROP_VOLTAGE_MAX || + psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX; +} + static const struct power_supply_desc axp209_batt_ps_desc = { .name = "axp20x-battery", .type = POWER_SUPPLY_TYPE_BATTERY, @@ -526,6 +892,16 @@ static const struct power_supply_desc axp209_batt_ps_desc = { .set_property = axp20x_battery_set_prop, }; +static const struct power_supply_desc axp717_batt_ps_desc = { + .name = "axp20x-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = axp717_battery_props, + .num_properties = ARRAY_SIZE(axp717_battery_props), + .property_is_writeable = axp717_battery_prop_writeable, + .get_property = axp717_battery_get_prop, + .set_property = axp717_battery_set_prop, +}; + static int axp209_bat_cfg_iio_channels(struct platform_device *pdev, struct axp20x_batt_ps *axp_batt) { @@ -555,6 +931,27 @@ static int axp209_bat_cfg_iio_channels(struct platform_device *pdev, return 0; } +static int axp717_bat_cfg_iio_channels(struct platform_device *pdev, + struct axp20x_batt_ps *axp_batt) +{ + axp_batt->batt_v = devm_iio_channel_get(&pdev->dev, "batt_v"); + if (IS_ERR(axp_batt->batt_v)) { + if (PTR_ERR(axp_batt->batt_v) == -ENODEV) + return -EPROBE_DEFER; + return PTR_ERR(axp_batt->batt_v); + } + + axp_batt->batt_chrg_i = devm_iio_channel_get(&pdev->dev, + "batt_chrg_i"); + if (IS_ERR(axp_batt->batt_chrg_i)) { + if (PTR_ERR(axp_batt->batt_chrg_i) == -ENODEV) + return -EPROBE_DEFER; + return PTR_ERR(axp_batt->batt_chrg_i); + } + + return 0; +} + static void axp209_set_battery_info(struct platform_device *pdev, struct axp20x_batt_ps *axp_batt, struct power_supply_battery_info *info) @@ -578,6 +975,32 @@ static void axp209_set_battery_info(struct platform_device *pdev, } } +static void axp717_set_battery_info(struct platform_device *pdev, + struct axp20x_batt_ps *axp_batt, + struct power_supply_battery_info *info) +{ + int vmin = info->voltage_min_design_uv; + int vmax = info->voltage_max_design_uv; + int ccc = info->constant_charge_current_max_ua; + int val; + + if (vmin > 0 && axp717_set_voltage_min_design(axp_batt, vmin)) + dev_err(&pdev->dev, + "couldn't set voltage_min_design\n"); + + if (vmax > 0 && axp717_battery_set_max_voltage(axp_batt, vmax)) + dev_err(&pdev->dev, + "couldn't set voltage_max_design\n"); + + axp717_get_constant_charge_current(axp_batt, &val); + axp_batt->max_ccc = ccc; + if (ccc <= 0 || axp717_set_constant_charge_current(axp_batt, ccc)) { + dev_err(&pdev->dev, + "couldn't set ccc from DT: current ccc is %d\n", + val); + } +} + static const struct axp_data axp209_data = { .ccc_scale = 100000, .ccc_offset = 300000, @@ -603,6 +1026,18 @@ static const struct axp_data axp221_data = { .set_bat_info = axp209_set_battery_info, }; +static const struct axp_data axp717_data = { + .ccc_scale = 64000, + .ccc_offset = 0, + .ccc_reg = AXP717_ICC_CHG_SET, + .ccc_mask = AXP717_ICC_CHARGER_LIM_MASK, + .bat_ps_desc = &axp717_batt_ps_desc, + .get_max_voltage = axp717_battery_get_max_voltage, + .set_max_voltage = axp717_battery_set_max_voltage, + .cfg_iio_chan = axp717_bat_cfg_iio_channels, + .set_bat_info = axp717_set_battery_info, +}; + static const struct axp_data axp813_data = { .ccc_scale = 200000, .ccc_offset = 200000, @@ -623,6 +1058,9 @@ static const struct of_device_id axp20x_battery_ps_id[] = { }, { .compatible = "x-powers,axp221-battery-power-supply", .data = (void *)&axp221_data, + }, { + .compatible = "x-powers,axp717-battery-power-supply", + .data = (void *)&axp717_data, }, { .compatible = "x-powers,axp813-battery-power-supply", .data = (void *)&axp813_data,