diff --git a/Documentation/devicetree/bindings/power/supply/adc-battery.yaml b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml new file mode 100644 index 000000000000..ed9702caedff --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/adc-battery.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ADC battery + +maintainers: + - Sebastian Reichel + +description: + Basic battery capacity meter, which only reports basic battery data + via ADC channels and optionally indicate that the battery is full by + polling a GPIO line. + + The voltage is expected to be measured between the battery terminals + and mandatory. The optional current/power channel is expected to + monitor the current/power flowing out of the battery. Last but not + least the temperature channel is supposed to measure the battery + temperature. + +allOf: + - $ref: power-supply.yaml# + +properties: + compatible: + const: adc-battery + + charged-gpios: + description: + GPIO which signals that the battery is fully charged. The GPIO is + often provided by charger ICs, that are not software controllable. + maxItems: 1 + + io-channels: + minItems: 1 + maxItems: 4 + + io-channel-names: + minItems: 1 + items: + - const: voltage + - enum: [ current, power, temperature ] + - enum: [ power, temperature ] + - const: temperature + + monitored-battery: true + +required: + - compatible + - io-channels + - io-channel-names + - monitored-battery + +unevaluatedProperties: false + +examples: + - | + #include + + fuel-gauge { + compatible = "adc-battery"; + charged-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>; + io-channels = <&adc 13>, <&adc 37>; + io-channel-names = "voltage", "current"; + + power-supplies = <&charger>; + monitored-battery = <&battery>; + }; diff --git a/drivers/power/reset/qcom-pon.c b/drivers/power/reset/qcom-pon.c index 16bc01738be9..ebdcfb28c4a0 100644 --- a/drivers/power/reset/qcom-pon.c +++ b/drivers/power/reset/qcom-pon.c @@ -91,7 +91,7 @@ static struct platform_driver pm8916_pon_driver = { .probe = pm8916_pon_probe, .driver = { .name = "pm8916-pon", - .of_match_table = of_match_ptr(pm8916_pon_id_table), + .of_match_table = pm8916_pon_id_table, }, }; module_platform_driver(pm8916_pon_driver); diff --git a/drivers/power/supply/axp288_charger.c b/drivers/power/supply/axp288_charger.c index 15219ed43ce9..b5903193e2f9 100644 --- a/drivers/power/supply/axp288_charger.c +++ b/drivers/power/supply/axp288_charger.c @@ -836,6 +836,7 @@ static int axp288_charger_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); struct power_supply_config charger_cfg = {}; + const char *extcon_name = NULL; unsigned int val; /* @@ -872,8 +873,18 @@ static int axp288_charger_probe(struct platform_device *pdev) return PTR_ERR(info->cable.edev); } - if (acpi_dev_present(USB_HOST_EXTCON_HID, NULL, -1)) { - info->otg.cable = extcon_get_extcon_dev(USB_HOST_EXTCON_NAME); + /* + * On devices with broken ACPI GPIO event handlers there also is no ACPI + * "INT3496" (USB_HOST_EXTCON_HID) device. x86-android-tablets.ko + * instantiates an "intel-int3496" extcon on these devs as a workaround. + */ + if (acpi_quirk_skip_gpio_event_handlers()) + extcon_name = "intel-int3496"; + else if (acpi_dev_present(USB_HOST_EXTCON_HID, NULL, -1)) + extcon_name = USB_HOST_EXTCON_NAME; + + if (extcon_name) { + info->otg.cable = extcon_get_extcon_dev(extcon_name); if (IS_ERR(info->otg.cable)) { dev_err_probe(dev, PTR_ERR(info->otg.cable), "extcon_get_extcon_dev(%s) failed\n", diff --git a/drivers/power/supply/bq24257_charger.c b/drivers/power/supply/bq24257_charger.c index 103ddc2b3def..45e4ba30da98 100644 --- a/drivers/power/supply/bq24257_charger.c +++ b/drivers/power/supply/bq24257_charger.c @@ -1140,7 +1140,7 @@ static const struct i2c_device_id bq24257_i2c_ids[] = { }; MODULE_DEVICE_TABLE(i2c, bq24257_i2c_ids); -static const struct of_device_id bq24257_of_match[] = { +static const struct of_device_id bq24257_of_match[] __maybe_unused = { { .compatible = "ti,bq24250", }, { .compatible = "ti,bq24251", }, { .compatible = "ti,bq24257", }, diff --git a/drivers/power/supply/bq256xx_charger.c b/drivers/power/supply/bq256xx_charger.c index 9cf4936440c9..e624834ae66c 100644 --- a/drivers/power/supply/bq256xx_charger.c +++ b/drivers/power/supply/bq256xx_charger.c @@ -70,6 +70,9 @@ #define BQ25611D_VBATREG_THRESH_uV 4290000 #define BQ25618_VBATREG_THRESH_uV 4300000 +#define BQ256XX_CHG_CONFIG_MASK BIT(4) +#define BQ256XX_CHG_CONFIG_BIT_SHIFT 4 + #define BQ256XX_ITERM_MASK GENMASK(3, 0) #define BQ256XX_ITERM_STEP_uA 60000 #define BQ256XX_ITERM_OFFSET_uA 60000 @@ -259,6 +262,7 @@ struct bq256xx_device { * @bq256xx_set_iterm: pointer to instance specific set_iterm function * @bq256xx_set_iprechg: pointer to instance specific set_iprechg function * @bq256xx_set_vindpm: pointer to instance specific set_vindpm function + * @bq256xx_set_charge_type: pointer to instance specific set_charge_type function * * @bq256xx_def_ichg: default ichg value in microamps * @bq256xx_def_iindpm: default iindpm value in microamps @@ -290,6 +294,7 @@ struct bq256xx_chip_info { int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm); int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg); int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm); + int (*bq256xx_set_charge_type)(struct bq256xx_device *bq, int type); int bq256xx_def_ichg; int bq256xx_def_iindpm; @@ -449,6 +454,27 @@ static int bq256xx_get_state(struct bq256xx_device *bq, return 0; } +static int bq256xx_set_charge_type(struct bq256xx_device *bq, int type) +{ + int chg_config = 0; + + switch (type) { + case POWER_SUPPLY_CHARGE_TYPE_NONE: + chg_config = 0x0; + break; + case POWER_SUPPLY_CHARGE_TYPE_TRICKLE: + case POWER_SUPPLY_CHARGE_TYPE_FAST: + chg_config = 0x1; + break; + default: + return -EINVAL; + } + + return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_0, + BQ256XX_CHG_CONFIG_MASK, + (chg_config ? 1 : 0) << BQ256XX_CHG_CONFIG_BIT_SHIFT); +} + static int bq256xx_get_ichg_curr(struct bq256xx_device *bq) { unsigned int charge_current_limit; @@ -915,6 +941,12 @@ static int bq256xx_set_charger_property(struct power_supply *psy, return ret; break; + case POWER_SUPPLY_PROP_CHARGE_TYPE: + ret = bq->chip_info->bq256xx_set_charge_type(bq, val->intval); + if (ret) + return ret; + break; + default: break; } @@ -1197,6 +1229,7 @@ static int bq256xx_property_is_writeable(struct power_supply *psy, case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: case POWER_SUPPLY_PROP_STATUS: case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + case POWER_SUPPLY_PROP_CHARGE_TYPE: return true; default: return false; @@ -1286,6 +1319,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { .bq256xx_set_iterm = bq256xx_set_term_curr, .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + .bq256xx_set_charge_type = bq256xx_set_charge_type, .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, @@ -1316,6 +1350,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { .bq256xx_set_iterm = bq256xx_set_term_curr, .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + .bq256xx_set_charge_type = bq256xx_set_charge_type, .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, @@ -1346,6 +1381,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { .bq256xx_set_iterm = bq256xx_set_term_curr, .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + .bq256xx_set_charge_type = bq256xx_set_charge_type, .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, @@ -1376,6 +1412,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { .bq256xx_set_iterm = bq256xx_set_term_curr, .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + .bq256xx_set_charge_type = bq256xx_set_charge_type, .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, @@ -1406,6 +1443,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { .bq256xx_set_iterm = bq256xx_set_term_curr, .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + .bq256xx_set_charge_type = bq256xx_set_charge_type, .bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA, .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, @@ -1436,6 +1474,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { .bq256xx_set_iterm = bq25618_619_set_term_curr, .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr, .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + .bq256xx_set_charge_type = bq256xx_set_charge_type, .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA, .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, @@ -1466,6 +1505,7 @@ static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { .bq256xx_set_iterm = bq25618_619_set_term_curr, .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr, .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + .bq256xx_set_charge_type = bq256xx_set_charge_type, .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA, .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index bfe08d7bfaf3..22cde35eb144 100644 --- a/drivers/power/supply/bq25890_charger.c +++ b/drivers/power/supply/bq25890_charger.c @@ -1622,7 +1622,7 @@ static const struct i2c_device_id bq25890_i2c_ids[] = { }; MODULE_DEVICE_TABLE(i2c, bq25890_i2c_ids); -static const struct of_device_id bq25890_of_match[] = { +static const struct of_device_id bq25890_of_match[] __maybe_unused = { { .compatible = "ti,bq25890", }, { .compatible = "ti,bq25892", }, { .compatible = "ti,bq25895", }, diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c index c9e8450c646f..5fa6ba7f41e1 100644 --- a/drivers/power/supply/charger-manager.c +++ b/drivers/power/supply/charger-manager.c @@ -1331,7 +1331,7 @@ static struct charger_desc *of_cm_parse_desc(struct device *dev) of_property_read_string(np, "cm-thermal-zone", &desc->thermal_zone); of_property_read_u32(np, "cm-battery-cold", &desc->temp_min); - if (of_get_property(np, "cm-battery-cold-in-minus", NULL)) + if (of_property_read_bool(np, "cm-battery-cold-in-minus")) desc->temp_min *= -1; of_property_read_u32(np, "cm-battery-hot", &desc->temp_max); of_property_read_u32(np, "cm-battery-temp-diff", &desc->temp_diff); diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c index 66039c665dd1..7bdc6b263609 100644 --- a/drivers/power/supply/generic-adc-battery.c +++ b/drivers/power/supply/generic-adc-battery.c @@ -1,13 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * Generic battery driver code using IIO + * Generic battery driver using IIO * Copyright (C) 2012, Anish Kumar - * based on jz4740-battery.c - * based on s3c_adc_battery.c - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive for - * more details. - * + * Copyright (c) 2023, Sebastian Reichel */ #include #include @@ -22,7 +17,8 @@ #include #include #include -#include +#include +#include #define JITTER_DEFAULT 10 /* hope 10ms is enough */ @@ -30,6 +26,7 @@ enum gab_chan_type { GAB_VOLTAGE = 0, GAB_CURRENT, GAB_POWER, + GAB_TEMP, GAB_MAX_CHAN_TYPE }; @@ -40,18 +37,16 @@ enum gab_chan_type { static const char *const gab_chan_name[] = { [GAB_VOLTAGE] = "voltage", [GAB_CURRENT] = "current", - [GAB_POWER] = "power", + [GAB_POWER] = "power", + [GAB_TEMP] = "temperature", }; struct gab { - struct power_supply *psy; - struct power_supply_desc psy_desc; - struct iio_channel *channel[GAB_MAX_CHAN_TYPE]; - struct gab_platform_data *pdata; + struct power_supply *psy; + struct power_supply_desc psy_desc; + struct iio_channel *channel[GAB_MAX_CHAN_TYPE]; struct delayed_work bat_work; - int level; - int status; - bool cable_plugged; + int status; struct gpio_desc *charge_finished; }; @@ -69,15 +64,6 @@ static void gab_ext_power_changed(struct power_supply *psy) static const enum power_supply_property gab_props[] = { POWER_SUPPLY_PROP_STATUS, - POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, - POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN, - POWER_SUPPLY_PROP_CHARGE_NOW, - POWER_SUPPLY_PROP_VOLTAGE_NOW, - POWER_SUPPLY_PROP_CURRENT_NOW, - POWER_SUPPLY_PROP_TECHNOLOGY, - POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, - POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, - POWER_SUPPLY_PROP_MODEL_NAME, }; /* @@ -88,6 +74,7 @@ static const enum power_supply_property gab_dyn_props[] = { POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_POWER_NOW, + POWER_SUPPLY_PROP_TEMP, }; static bool gab_charge_finished(struct gab *adc_bat) @@ -97,119 +84,53 @@ static bool gab_charge_finished(struct gab *adc_bat) return gpiod_get_value(adc_bat->charge_finished); } -static int gab_get_status(struct gab *adc_bat) -{ - struct gab_platform_data *pdata = adc_bat->pdata; - struct power_supply_info *bat_info; - - bat_info = &pdata->battery_info; - if (adc_bat->level == bat_info->charge_full_design) - return POWER_SUPPLY_STATUS_FULL; - return adc_bat->status; -} - -static enum gab_chan_type gab_prop_to_chan(enum power_supply_property psp) -{ - switch (psp) { - case POWER_SUPPLY_PROP_POWER_NOW: - return GAB_POWER; - case POWER_SUPPLY_PROP_VOLTAGE_NOW: - return GAB_VOLTAGE; - case POWER_SUPPLY_PROP_CURRENT_NOW: - return GAB_CURRENT; - default: - WARN_ON(1); - break; - } - return GAB_POWER; -} - -static int read_channel(struct gab *adc_bat, enum power_supply_property psp, +static int gab_read_channel(struct gab *adc_bat, enum gab_chan_type channel, int *result) { int ret; - int chan_index; - chan_index = gab_prop_to_chan(psp); - ret = iio_read_channel_processed(adc_bat->channel[chan_index], - result); + ret = iio_read_channel_processed(adc_bat->channel[channel], result); if (ret < 0) - pr_err("read channel error\n"); + dev_err(&adc_bat->psy->dev, "read channel error: %d\n", ret); + else + *result *= 1000; + return ret; } static int gab_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { - struct gab *adc_bat; - struct gab_platform_data *pdata; - struct power_supply_info *bat_info; - int result = 0; - int ret = 0; - - adc_bat = to_generic_bat(psy); - if (!adc_bat) { - dev_err(&psy->dev, "no battery infos ?!\n"); - return -EINVAL; - } - pdata = adc_bat->pdata; - bat_info = &pdata->battery_info; + struct gab *adc_bat = to_generic_bat(psy); switch (psp) { case POWER_SUPPLY_PROP_STATUS: - val->intval = gab_get_status(adc_bat); - break; - case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN: - val->intval = 0; - break; - case POWER_SUPPLY_PROP_CHARGE_NOW: - val->intval = pdata->cal_charge(result); - break; + val->intval = adc_bat->status; + return 0; case POWER_SUPPLY_PROP_VOLTAGE_NOW: + return gab_read_channel(adc_bat, GAB_VOLTAGE, &val->intval); case POWER_SUPPLY_PROP_CURRENT_NOW: + return gab_read_channel(adc_bat, GAB_CURRENT, &val->intval); case POWER_SUPPLY_PROP_POWER_NOW: - ret = read_channel(adc_bat, psp, &result); - if (ret < 0) - goto err; - val->intval = result; - break; - case POWER_SUPPLY_PROP_TECHNOLOGY: - val->intval = bat_info->technology; - break; - case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: - val->intval = bat_info->voltage_min_design; - break; - case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: - val->intval = bat_info->voltage_max_design; - break; - case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: - val->intval = bat_info->charge_full_design; - break; - case POWER_SUPPLY_PROP_MODEL_NAME: - val->strval = bat_info->name; - break; + return gab_read_channel(adc_bat, GAB_POWER, &val->intval); + case POWER_SUPPLY_PROP_TEMP: + return gab_read_channel(adc_bat, GAB_TEMP, &val->intval); default: return -EINVAL; } -err: - return ret; } static void gab_work(struct work_struct *work) { struct gab *adc_bat; struct delayed_work *delayed_work; - bool is_plugged; int status; delayed_work = to_delayed_work(work); adc_bat = container_of(delayed_work, struct gab, bat_work); status = adc_bat->status; - is_plugged = power_supply_am_i_supplied(adc_bat->psy); - adc_bat->cable_plugged = is_plugged; - - if (!is_plugged) + if (!power_supply_am_i_supplied(adc_bat->psy)) adc_bat->status = POWER_SUPPLY_STATUS_DISCHARGING; else if (gab_charge_finished(adc_bat)) adc_bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING; @@ -223,12 +144,10 @@ static void gab_work(struct work_struct *work) static irqreturn_t gab_charged(int irq, void *dev_id) { struct gab *adc_bat = dev_id; - struct gab_platform_data *pdata = adc_bat->pdata; - int delay; - delay = pdata->jitter_delay ? pdata->jitter_delay : JITTER_DEFAULT; schedule_delayed_work(&adc_bat->bat_work, - msecs_to_jiffies(delay)); + msecs_to_jiffies(JITTER_DEFAULT)); + return IRQ_HANDLED; } @@ -237,7 +156,6 @@ static int gab_probe(struct platform_device *pdev) struct gab *adc_bat; struct power_supply_desc *psy_desc; struct power_supply_config psy_cfg = {}; - struct gab_platform_data *pdata = pdev->dev.platform_data; enum power_supply_property *properties; int ret = 0; int chan; @@ -245,35 +163,31 @@ static int gab_probe(struct platform_device *pdev) bool any = false; adc_bat = devm_kzalloc(&pdev->dev, sizeof(*adc_bat), GFP_KERNEL); - if (!adc_bat) { - dev_err(&pdev->dev, "failed to allocate memory\n"); + if (!adc_bat) return -ENOMEM; - } + psy_cfg.of_node = pdev->dev.of_node; psy_cfg.drv_data = adc_bat; psy_desc = &adc_bat->psy_desc; - psy_desc->name = pdata->battery_info.name; + psy_desc->name = dev_name(&pdev->dev); /* bootup default values for the battery */ - adc_bat->cable_plugged = false; adc_bat->status = POWER_SUPPLY_STATUS_DISCHARGING; psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; psy_desc->get_property = gab_get_property; psy_desc->external_power_changed = gab_ext_power_changed; - adc_bat->pdata = pdata; /* * copying the static properties and allocating extra memory for holding * the extra configurable properties received from platform data. */ - properties = kcalloc(ARRAY_SIZE(gab_props) + - ARRAY_SIZE(gab_chan_name), - sizeof(*properties), - GFP_KERNEL); - if (!properties) { - ret = -ENOMEM; - goto first_mem_fail; - } + properties = devm_kcalloc(&pdev->dev, + ARRAY_SIZE(gab_props) + + ARRAY_SIZE(gab_chan_name), + sizeof(*properties), + GFP_KERNEL); + if (!properties) + return -ENOMEM; memcpy(properties, gab_props, sizeof(gab_props)); @@ -282,12 +196,13 @@ static int gab_probe(struct platform_device *pdev) * based on the channel supported by consumer device. */ for (chan = 0; chan < ARRAY_SIZE(gab_chan_name); chan++) { - adc_bat->channel[chan] = iio_channel_get(&pdev->dev, - gab_chan_name[chan]); + adc_bat->channel[chan] = devm_iio_channel_get(&pdev->dev, gab_chan_name[chan]); if (IS_ERR(adc_bat->channel[chan])) { ret = PTR_ERR(adc_bat->channel[chan]); + if (ret != -ENODEV) + return dev_err_probe(&pdev->dev, ret, "Failed to get ADC channel %s\n", gab_chan_name[chan]); adc_bat->channel[chan] = NULL; - } else { + } else if (adc_bat->channel[chan]) { /* copying properties for supported channels only */ int index2; @@ -302,10 +217,8 @@ static int gab_probe(struct platform_device *pdev) } /* none of the channels are supported so let's bail out */ - if (!any) { - ret = -ENODEV; - goto second_mem_fail; - } + if (!any) + return dev_err_probe(&pdev->dev, -ENODEV, "Failed to get any ADC channel\n"); /* * Total number of properties is equal to static properties @@ -316,25 +229,24 @@ static int gab_probe(struct platform_device *pdev) psy_desc->properties = properties; psy_desc->num_properties = index; - adc_bat->psy = power_supply_register(&pdev->dev, psy_desc, &psy_cfg); - if (IS_ERR(adc_bat->psy)) { - ret = PTR_ERR(adc_bat->psy); - goto err_reg_fail; - } + adc_bat->psy = devm_power_supply_register(&pdev->dev, psy_desc, &psy_cfg); + if (IS_ERR(adc_bat->psy)) + return dev_err_probe(&pdev->dev, PTR_ERR(adc_bat->psy), "Failed to register power-supply device\n"); - INIT_DELAYED_WORK(&adc_bat->bat_work, gab_work); + ret = devm_delayed_work_autocancel(&pdev->dev, &adc_bat->bat_work, gab_work); + if (ret) + return dev_err_probe(&pdev->dev, ret, "Failed to register delayed work\n"); - adc_bat->charge_finished = devm_gpiod_get_optional(&pdev->dev, - "charged", GPIOD_IN); + adc_bat->charge_finished = devm_gpiod_get_optional(&pdev->dev, "charged", GPIOD_IN); if (adc_bat->charge_finished) { int irq; irq = gpiod_to_irq(adc_bat->charge_finished); - ret = request_any_context_irq(irq, gab_charged, + ret = devm_request_any_context_irq(&pdev->dev, irq, gab_charged, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "battery charged", adc_bat); if (ret < 0) - goto gpio_req_fail; + return dev_err_probe(&pdev->dev, ret, "Failed to register irq\n"); } platform_set_drvdata(pdev, adc_bat); @@ -343,38 +255,6 @@ static int gab_probe(struct platform_device *pdev) schedule_delayed_work(&adc_bat->bat_work, msecs_to_jiffies(0)); return 0; - -gpio_req_fail: - power_supply_unregister(adc_bat->psy); -err_reg_fail: - for (chan = 0; chan < ARRAY_SIZE(gab_chan_name); chan++) { - if (adc_bat->channel[chan]) - iio_channel_release(adc_bat->channel[chan]); - } -second_mem_fail: - kfree(properties); -first_mem_fail: - return ret; -} - -static int gab_remove(struct platform_device *pdev) -{ - int chan; - struct gab *adc_bat = platform_get_drvdata(pdev); - - power_supply_unregister(adc_bat->psy); - - if (adc_bat->charge_finished) - free_irq(gpiod_to_irq(adc_bat->charge_finished), adc_bat); - - for (chan = 0; chan < ARRAY_SIZE(gab_chan_name); chan++) { - if (adc_bat->channel[chan]) - iio_channel_release(adc_bat->channel[chan]); - } - - kfree(adc_bat->psy_desc.properties); - cancel_delayed_work_sync(&adc_bat->bat_work); - return 0; } static int __maybe_unused gab_suspend(struct device *dev) @@ -389,26 +269,29 @@ static int __maybe_unused gab_suspend(struct device *dev) static int __maybe_unused gab_resume(struct device *dev) { struct gab *adc_bat = dev_get_drvdata(dev); - struct gab_platform_data *pdata = adc_bat->pdata; - int delay; - - delay = pdata->jitter_delay ? pdata->jitter_delay : JITTER_DEFAULT; /* Schedule timer to check current status */ schedule_delayed_work(&adc_bat->bat_work, - msecs_to_jiffies(delay)); + msecs_to_jiffies(JITTER_DEFAULT)); + return 0; } static SIMPLE_DEV_PM_OPS(gab_pm_ops, gab_suspend, gab_resume); +static const struct of_device_id gab_match[] = { + { .compatible = "adc-battery" }, + { } +}; +MODULE_DEVICE_TABLE(of, gab_match); + static struct platform_driver gab_driver = { .driver = { .name = "generic-adc-battery", .pm = &gab_pm_ops, + .of_match_table = gab_match, }, .probe = gab_probe, - .remove = gab_remove, }; module_platform_driver(gab_driver); diff --git a/drivers/power/supply/lp8727_charger.c b/drivers/power/supply/lp8727_charger.c index e6c21377d53c..dc42d354b892 100644 --- a/drivers/power/supply/lp8727_charger.c +++ b/drivers/power/supply/lp8727_charger.c @@ -598,7 +598,7 @@ static void lp8727_remove(struct i2c_client *cl) lp8727_unregister_psy(pchg); } -static const struct of_device_id lp8727_dt_ids[] = { +static const struct of_device_id lp8727_dt_ids[] __maybe_unused = { { .compatible = "ti,lp8727", }, { } }; diff --git a/drivers/power/supply/ltc4162-l-charger.c b/drivers/power/supply/ltc4162-l-charger.c index 0e95c65369b8..285580845e2f 100644 --- a/drivers/power/supply/ltc4162-l-charger.c +++ b/drivers/power/supply/ltc4162-l-charger.c @@ -908,7 +908,7 @@ static const struct i2c_device_id ltc4162l_i2c_id_table[] = { }; MODULE_DEVICE_TABLE(i2c, ltc4162l_i2c_id_table); -static const struct of_device_id ltc4162l_of_match[] = { +static const struct of_device_id ltc4162l_of_match[] __maybe_unused = { { .compatible = "lltc,ltc4162-l", }, { }, }; diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index a980d60c437b..ab986dbace16 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -388,7 +388,7 @@ static int __power_supply_get_supplier_property(struct device *dev, void *_data) struct psy_get_supplier_prop_data *data = _data; if (__power_supply_is_supplied_by(epsy, data->psy)) - if (!epsy->desc->get_property(epsy, data->psp, data->val)) + if (!power_supply_get_property(epsy, data->psp, data->val)) return 1; /* Success */ return 0; /* Continue iterating */ @@ -832,6 +832,133 @@ void power_supply_put_battery_info(struct power_supply *psy, } EXPORT_SYMBOL_GPL(power_supply_put_battery_info); +const enum power_supply_property power_supply_battery_info_properties[] = { + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN, + POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX, + POWER_SUPPLY_PROP_TEMP_ALERT_MIN, + POWER_SUPPLY_PROP_TEMP_ALERT_MAX, + POWER_SUPPLY_PROP_TEMP_MIN, + POWER_SUPPLY_PROP_TEMP_MAX, +}; +EXPORT_SYMBOL_GPL(power_supply_battery_info_properties); + +const size_t power_supply_battery_info_properties_size = ARRAY_SIZE(power_supply_battery_info_properties); +EXPORT_SYMBOL_GPL(power_supply_battery_info_properties_size); + +bool power_supply_battery_info_has_prop(struct power_supply_battery_info *info, + enum power_supply_property psp) +{ + if (!info) + return false; + + switch (psp) { + case POWER_SUPPLY_PROP_TECHNOLOGY: + return info->technology != POWER_SUPPLY_TECHNOLOGY_UNKNOWN; + case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: + return info->energy_full_design_uwh >= 0; + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + return info->charge_full_design_uah >= 0; + case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: + return info->voltage_min_design_uv >= 0; + case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: + return info->voltage_max_design_uv >= 0; + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + return info->precharge_current_ua >= 0; + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return info->charge_term_current_ua >= 0; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + return info->constant_charge_current_max_ua >= 0; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + return info->constant_charge_voltage_max_uv >= 0; + case POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN: + return info->temp_ambient_alert_min > INT_MIN; + case POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX: + return info->temp_ambient_alert_max < INT_MAX; + case POWER_SUPPLY_PROP_TEMP_ALERT_MIN: + return info->temp_alert_min > INT_MIN; + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + return info->temp_alert_max < INT_MAX; + case POWER_SUPPLY_PROP_TEMP_MIN: + return info->temp_min > INT_MIN; + case POWER_SUPPLY_PROP_TEMP_MAX: + return info->temp_max < INT_MAX; + default: + return false; + } +} +EXPORT_SYMBOL_GPL(power_supply_battery_info_has_prop); + +int power_supply_battery_info_get_prop(struct power_supply_battery_info *info, + enum power_supply_property psp, + union power_supply_propval *val) +{ + if (!info) + return -EINVAL; + + if (!power_supply_battery_info_has_prop(info, psp)) + return -EINVAL; + + switch (psp) { + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval = info->technology; + return 0; + case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: + val->intval = info->energy_full_design_uwh; + return 0; + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + val->intval = info->charge_full_design_uah; + return 0; + case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: + val->intval = info->voltage_min_design_uv; + return 0; + case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: + val->intval = info->voltage_max_design_uv; + return 0; + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + val->intval = info->precharge_current_ua; + return 0; + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + val->intval = info->charge_term_current_ua; + return 0; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + val->intval = info->constant_charge_current_max_ua; + return 0; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = info->constant_charge_voltage_max_uv; + return 0; + case POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN: + val->intval = info->temp_ambient_alert_min; + return 0; + case POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX: + val->intval = info->temp_ambient_alert_max; + return 0; + case POWER_SUPPLY_PROP_TEMP_ALERT_MIN: + val->intval = info->temp_alert_min; + return 0; + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + val->intval = info->temp_alert_max; + return 0; + case POWER_SUPPLY_PROP_TEMP_MIN: + val->intval = info->temp_min; + return 0; + case POWER_SUPPLY_PROP_TEMP_MAX: + val->intval = info->temp_max; + return 0; + default: + return -EINVAL; + } +} +EXPORT_SYMBOL_GPL(power_supply_battery_info_get_prop); + /** * power_supply_temp2resist_simple() - find the battery internal resistance * percent from temperature @@ -1046,6 +1173,22 @@ bool power_supply_battery_bti_in_range(struct power_supply_battery_info *info, } EXPORT_SYMBOL_GPL(power_supply_battery_bti_in_range); +static bool psy_has_property(const struct power_supply_desc *psy_desc, + enum power_supply_property psp) +{ + bool found = false; + int i; + + for (i = 0; i < psy_desc->num_properties; i++) { + if (psy_desc->properties[i] == psp) { + found = true; + break; + } + } + + return found; +} + int power_supply_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) @@ -1056,7 +1199,12 @@ int power_supply_get_property(struct power_supply *psy, return -ENODEV; } - return psy->desc->get_property(psy, psp, val); + if (psy_has_property(psy->desc, psp)) + return psy->desc->get_property(psy, psp, val); + else if (power_supply_battery_info_has_prop(psy->battery_info, psp)) + return power_supply_battery_info_get_prop(psy->battery_info, psp, val); + else + return -EINVAL; } EXPORT_SYMBOL_GPL(power_supply_get_property); @@ -1117,22 +1265,6 @@ void power_supply_unreg_notifier(struct notifier_block *nb) } EXPORT_SYMBOL_GPL(power_supply_unreg_notifier); -static bool psy_has_property(const struct power_supply_desc *psy_desc, - enum power_supply_property psp) -{ - bool found = false; - int i; - - for (i = 0; i < psy_desc->num_properties; i++) { - if (psy_desc->properties[i] == psp) { - found = true; - break; - } - } - - return found; -} - #ifdef CONFIG_THERMAL static int power_supply_read_temp(struct thermal_zone_device *tzd, int *temp) @@ -1255,6 +1387,17 @@ __power_supply_register(struct device *parent, goto check_supplies_failed; } + /* + * Expose constant battery info, if it is available. While there are + * some chargers accessing constant battery data, we only want to + * expose battery data to userspace for battery devices. + */ + if (desc->type == POWER_SUPPLY_TYPE_BATTERY) { + rc = power_supply_get_battery_info(psy, &psy->battery_info); + if (rc && rc != -ENODEV && rc != -ENOENT) + goto check_supplies_failed; + } + spin_lock_init(&psy->changed_lock); rc = device_add(dev); if (rc) diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index c228205e0953..ba3b125cd66e 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -221,9 +221,10 @@ static struct power_supply_attr power_supply_attrs[] = { POWER_SUPPLY_ATTR(MANUFACTURER), POWER_SUPPLY_ATTR(SERIAL_NUMBER), }; +#define POWER_SUPPLY_ATTR_CNT ARRAY_SIZE(power_supply_attrs) static struct attribute * -__power_supply_attrs[ARRAY_SIZE(power_supply_attrs) + 1]; +__power_supply_attrs[POWER_SUPPLY_ATTR_CNT + 1]; static struct power_supply_attr *to_ps_attr(struct device_attribute *attr) { @@ -380,6 +381,9 @@ static umode_t power_supply_attr_is_visible(struct kobject *kobj, } } + if (power_supply_battery_info_has_prop(psy->battery_info, attrno)) + return mode; + return 0; } @@ -461,6 +465,10 @@ static int add_prop_uevent(const struct device *dev, struct kobj_uevent_env *env int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env) { const struct power_supply *psy = dev_get_drvdata(dev); + const enum power_supply_property *battery_props = + power_supply_battery_info_properties; + unsigned long psy_drv_properties[POWER_SUPPLY_ATTR_CNT / + sizeof(unsigned long) + 1] = {0}; int ret = 0, j; char *prop_buf; @@ -482,12 +490,25 @@ int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env) goto out; for (j = 0; j < psy->desc->num_properties; j++) { + set_bit(psy->desc->properties[j], psy_drv_properties); ret = add_prop_uevent(dev, env, psy->desc->properties[j], prop_buf); if (ret) goto out; } + for (j = 0; j < power_supply_battery_info_properties_size; j++) { + if (test_bit(battery_props[j], psy_drv_properties)) + continue; + if (!power_supply_battery_info_has_prop(psy->battery_info, + battery_props[j])) + continue; + ret = add_prop_uevent(dev, env, battery_props[j], + prop_buf); + if (ret) + goto out; + } + out: free_page((unsigned long)prop_buf); diff --git a/drivers/power/supply/rk817_charger.c b/drivers/power/supply/rk817_charger.c index 36f807b5ec44..1a2143641e66 100644 --- a/drivers/power/supply/rk817_charger.c +++ b/drivers/power/supply/rk817_charger.c @@ -335,6 +335,20 @@ static int rk817_bat_calib_cap(struct rk817_charger *charger) charger->fcc_mah * 1000); } + /* + * Set the SOC to 0 if we are below the minimum system voltage. + */ + if (volt_avg <= charger->bat_voltage_min_design_uv) { + charger->soc = 0; + charge_now_adc = CHARGE_TO_ADC(0, charger->res_div); + put_unaligned_be32(charge_now_adc, bulk_reg); + regmap_bulk_write(rk808->regmap, + RK817_GAS_GAUGE_Q_INIT_H3, bulk_reg, 4); + dev_warn(charger->dev, + "Battery voltage %d below minimum voltage %d\n", + volt_avg, charger->bat_voltage_min_design_uv); + } + rk817_record_battery_nvram_values(charger); return 0; @@ -710,9 +724,10 @@ static int rk817_read_battery_nvram_values(struct rk817_charger *charger) /* * Read the nvram for state of charge. Sanity check for values greater - * than 100 (10000). If the value is off it should get corrected - * automatically when the voltage drops to the min (soc is 0) or when - * the battery is full (soc is 100). + * than 100 (10000) or less than 0, because other things (BSP kernels, + * U-Boot, or even i2cset) can write to this register. If the value is + * off it should get corrected automatically when the voltage drops to + * the min (soc is 0) or when the battery is full (soc is 100). */ ret = regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_BAT_R1, bulk_reg, 3); @@ -721,6 +736,8 @@ static int rk817_read_battery_nvram_values(struct rk817_charger *charger) charger->soc = get_unaligned_le24(bulk_reg); if (charger->soc > 10000) charger->soc = 10000; + if (charger->soc < 0) + charger->soc = 0; return 0; } @@ -731,8 +748,8 @@ rk817_read_or_set_full_charge_on_boot(struct rk817_charger *charger, { struct rk808 *rk808 = charger->rk808; u8 bulk_reg[4]; - u32 boot_voltage, boot_charge_mah, tmp; - int ret, reg, off_time; + u32 boot_voltage, boot_charge_mah; + int ret, reg, off_time, tmp; bool first_boot; /* @@ -785,10 +802,12 @@ rk817_read_or_set_full_charge_on_boot(struct rk817_charger *charger, regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_Q_PRES_H3, bulk_reg, 4); tmp = get_unaligned_be32(bulk_reg); + if (tmp < 0) + tmp = 0; boot_charge_mah = ADC_TO_CHARGE_UAH(tmp, charger->res_div) / 1000; /* - * Check if the columb counter has been off for more than 300 + * Check if the columb counter has been off for more than 30 * minutes as it tends to drift downward. If so, re-init soc * with the boot voltage instead. Note the unit values for the * OFF_CNT register appear to be in decaminutes and stops @@ -799,7 +818,7 @@ rk817_read_or_set_full_charge_on_boot(struct rk817_charger *charger, * than 0 on a reboot anyway. */ regmap_read(rk808->regmap, RK817_GAS_GAUGE_OFF_CNT, &off_time); - if (off_time >= 30) { + if (off_time >= 3) { regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_PWRON_VOL_H, bulk_reg, 2); @@ -816,19 +835,6 @@ rk817_read_or_set_full_charge_on_boot(struct rk817_charger *charger, } } - regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_PWRON_VOL_H, - bulk_reg, 2); - tmp = get_unaligned_be16(bulk_reg); - boot_voltage = (charger->voltage_k * tmp) + 1000 * charger->voltage_b; - regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_Q_PRES_H3, - bulk_reg, 4); - tmp = get_unaligned_be32(bulk_reg); - boot_charge_mah = ADC_TO_CHARGE_UAH(tmp, charger->res_div) / 1000; - regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_OCV_VOL_H, - bulk_reg, 2); - tmp = get_unaligned_be16(bulk_reg); - boot_voltage = (charger->voltage_k * tmp) + 1000 * charger->voltage_b; - /* * Now we have our full charge capacity and soc, init the columb * counter. diff --git a/drivers/power/supply/rt9455_charger.c b/drivers/power/supply/rt9455_charger.c index 31fb6526a1fd..0149e00f2bf8 100644 --- a/drivers/power/supply/rt9455_charger.c +++ b/drivers/power/supply/rt9455_charger.c @@ -1722,7 +1722,7 @@ static const struct i2c_device_id rt9455_i2c_id_table[] = { }; MODULE_DEVICE_TABLE(i2c, rt9455_i2c_id_table); -static const struct of_device_id rt9455_of_match[] = { +static const struct of_device_id rt9455_of_match[] __maybe_unused = { { .compatible = "richtek,rt9455", }, { }, }; diff --git a/drivers/power/supply/twl4030_charger.c b/drivers/power/supply/twl4030_charger.c index 53a0ea5a61da..7adfd69fe649 100644 --- a/drivers/power/supply/twl4030_charger.c +++ b/drivers/power/supply/twl4030_charger.c @@ -1126,7 +1126,7 @@ static int twl4030_bci_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id twl_bci_of_match[] = { +static const struct of_device_id twl_bci_of_match[] __maybe_unused = { {.compatible = "ti,twl4030-bci", }, { } }; diff --git a/include/linux/power/generic-adc-battery.h b/include/linux/power/generic-adc-battery.h deleted file mode 100644 index c68cbf34cd34..000000000000 --- a/include/linux/power/generic-adc-battery.h +++ /dev/null @@ -1,23 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) 2012, Anish Kumar - */ - -#ifndef GENERIC_ADC_BATTERY_H -#define GENERIC_ADC_BATTERY_H - -/** - * struct gab_platform_data - platform_data for generic adc iio battery driver. - * @battery_info: recommended structure to specify static power supply - * parameters - * @cal_charge: calculate charge level. - * @jitter_delay: delay required after the interrupt to check battery - * status.Default set is 10ms. - */ -struct gab_platform_data { - struct power_supply_info battery_info; - int (*cal_charge)(long value); - int jitter_delay; -}; - -#endif /* GENERIC_ADC_BATTERY_H */ diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index aa2c4a7c4826..a427f13c757f 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -301,6 +301,7 @@ struct power_supply { bool initialized; bool removing; atomic_t use_cnt; + struct power_supply_battery_info *battery_info; #ifdef CONFIG_THERMAL struct thermal_zone_device *tzd; struct thermal_cooling_device *tcd; @@ -791,10 +792,17 @@ devm_power_supply_get_by_phandle(struct device *dev, const char *property) { return NULL; } #endif /* CONFIG_OF */ +extern const enum power_supply_property power_supply_battery_info_properties[]; +extern const size_t power_supply_battery_info_properties_size; extern int power_supply_get_battery_info(struct power_supply *psy, struct power_supply_battery_info **info_out); extern void power_supply_put_battery_info(struct power_supply *psy, struct power_supply_battery_info *info); +extern bool power_supply_battery_info_has_prop(struct power_supply_battery_info *info, + enum power_supply_property psp); +extern int power_supply_battery_info_get_prop(struct power_supply_battery_info *info, + enum power_supply_property psp, + union power_supply_propval *val); extern int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table, int table_len, int ocv); extern struct power_supply_battery_ocv_table *