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/Linux-v6.1/drivers/acpi/
Dbattery.c3 * battery.c - ACPI Battery Driver (Revision: 2.0)
11 #define pr_fmt(fmt) "ACPI: battery: " fmt
30 #include <acpi/battery.h>
36 #define ACPI_BATTERY_DEVICE_NAME "Battery"
38 /* Battery power unit: 0 means mW, 1 means mA */
47 MODULE_DESCRIPTION("ACPI Battery Driver");
76 * is running on battery or not. When mAh is the unit, most
132 static inline int acpi_battery_present(struct acpi_battery *battery) in acpi_battery_present() argument
134 return battery->device->status.battery_present; in acpi_battery_present()
137 static int acpi_battery_technology(struct acpi_battery *battery) in acpi_battery_technology() argument
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Dsbs.c3 * sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $)
24 #include <acpi/battery.h>
30 #define ACPI_SBS_DEVICE_NAME "Smart Battery System"
38 MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
90 struct acpi_battery battery[MAX_SBS_BAT]; member
100 static int acpi_battery_get_state(struct acpi_battery *battery);
110 static inline int acpi_battery_vscale(struct acpi_battery *battery) in acpi_battery_vscale() argument
112 return battery_scale((battery->spec & 0x0f00) >> 8); in acpi_battery_vscale()
115 static inline int acpi_battery_ipscale(struct acpi_battery *battery) in acpi_battery_ipscale() argument
117 return battery_scale((battery->spec & 0xf000) >> 12); in acpi_battery_ipscale()
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/Linux-v6.1/drivers/power/supply/
DKconfig45 battery class devices.
48 tristate "Generic battery support using IIO"
51 Say Y here to enable support for the generic battery driver
60 which include a battery charger and a boost converter.
63 tristate "MAX8925 battery charger support"
66 Say Y here to enable support for the battery charger in the Maxim
70 tristate "WM831X backup battery charger support"
73 Say Y here to enable support for the backup battery charger
96 tristate "Marvell 88PM860x battery driver"
99 Say Y here to enable battery monitor for Marvell 88PM860x chip.
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Drt5033_battery.c17 struct rt5033_battery *battery = i2c_get_clientdata(client); in rt5033_battery_get_capacity() local
20 regmap_read(battery->regmap, RT5033_FUEL_REG_SOC_H, &msb); in rt5033_battery_get_capacity()
27 struct rt5033_battery *battery = i2c_get_clientdata(client); in rt5033_battery_get_present() local
30 regmap_read(battery->regmap, RT5033_FUEL_REG_CONFIG_L, &val); in rt5033_battery_get_present()
38 struct rt5033_battery *battery = i2c_get_clientdata(client); in rt5033_battery_get_watt_prop() local
60 regmap_read(battery->regmap, regh, &msb); in rt5033_battery_get_watt_prop()
61 regmap_read(battery->regmap, regl, &lsb); in rt5033_battery_get_watt_prop()
72 struct rt5033_battery *battery = power_supply_get_drvdata(psy); in rt5033_battery_get_property() local
78 val->intval = rt5033_battery_get_watt_prop(battery->client, in rt5033_battery_get_property()
82 val->intval = rt5033_battery_get_present(battery->client); in rt5033_battery_get_property()
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Dtosa_battery.c3 * Battery and Power Management code for the Sharp SL-6000x
222 .name = "main-battery",
232 .name = "jacket-battery",
241 .name = "backup-battery",
352 /* Per-battery output check (routes battery voltage to ADC) */ in tosa_bat_probe()
353 tosa_bat_main.gpiod_bat = devm_gpiod_get(dev, "main battery", GPIOD_OUT_LOW); in tosa_bat_probe()
356 "no main battery GPIO\n"); in tosa_bat_probe()
357 tosa_bat_jacket.gpiod_bat = devm_gpiod_get(dev, "jacket battery", GPIOD_OUT_LOW); in tosa_bat_probe()
360 "no jacket battery GPIO\n"); in tosa_bat_probe()
361 tosa_bat_bu.gpiod_bat = devm_gpiod_get(dev, "backup battery", GPIOD_OUT_LOW); in tosa_bat_probe()
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Dingenic-battery.c3 * Battery driver for the Ingenic JZ47xx SoCs
6 * based on drivers/power/supply/jz4740-battery.c
20 struct power_supply *battery; member
59 * based on the battery's max voltage.
136 bat->channel = devm_iio_channel_get(dev, "battery"); in ingenic_battery_probe()
141 desc->name = "jz-battery"; in ingenic_battery_probe()
149 bat->battery = devm_power_supply_register(dev, desc, &psy_cfg); in ingenic_battery_probe()
150 if (IS_ERR(bat->battery)) in ingenic_battery_probe()
151 return dev_err_probe(dev, PTR_ERR(bat->battery), in ingenic_battery_probe()
152 "Unable to register battery\n"); in ingenic_battery_probe()
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/Linux-v6.1/Documentation/devicetree/bindings/power/supply/
Dbattery.yaml4 $id: http://devicetree.org/schemas/power/supply/battery.yaml#
7 title: Battery Characteristics
13 The devicetree battery node provides static battery characteristics.
15 on a fuel gauge chip. The battery node should be used where there is
18 Upstream dts files should not include battery nodes, unless the battery
21 behavior should a replacement that changes the battery type occur
24 Battery properties are named, where possible, for the corresponding elements
28 The phandle's property should be named "monitored-battery".
32 const: simple-battery
35 description: This describes the chemical technology of the battery.
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Dingenic,battery.yaml5 $id: http://devicetree.org/schemas/power/supply/ingenic,battery.yaml#
8 title: Ingenic JZ47xx battery bindings
16 - const: ingenic,jz4740-battery
19 - ingenic,jz4725b-battery
20 - ingenic,jz4770-battery
21 - const: ingenic,jz4740-battery
27 const: battery
29 monitored-battery:
31 phandle to a "simple-battery" compatible node.
34 in battery.yaml, with the following properties being required:
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Dcharger-manager.yaml29 description: name of battery fuel gauge
34 default: battery
51 cm-battery-stat:
52 description: battery status
55 - 0 # battery always present
56 - 1 # no battery
68 description: voltage of full battery in uV
72 description: state of charge to consider as full battery in %
76 description: capcity to consider as full battery in uAh
91 cm-battery-cold:
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Dcpcap-battery.yaml5 $id: http://devicetree.org/schemas/power/supply/cpcap-battery.yaml#
8 title: Motorola CPCAP PMIC battery
16 the Droid 4. This binding describes its battery fuel gauge
24 const: motorola,cpcap-battery
29 - description: low battery percentage interrupt
30 - description: critical battery percentage interrupt
32 - description: battery detect interrupt
46 - description: battery temperature
47 - description: battery voltage
48 - description: battery charge current
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Dsbs,sbs-battery.yaml4 $id: http://devicetree.org/schemas/power/supply/sbs,sbs-battery.yaml#
7 title: SBS compliant battery
13 Battery compatible with the smart battery system specifications
27 - sbs,sbs-battery
29 - const: sbs,sbs-battery
47 sbs,battery-detect-gpios:
49 GPIO which signals battery detection. If this is not supplied, the bus
50 needs to be polled to detect the battery.
58 the bus. Also some SBS battery fuel gauges are known to have a buggy multi-
76 battery@b {
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Dsamsung,battery.yaml4 $id: http://devicetree.org/schemas/power/supply/samsung,battery.yaml#
16 the physical restrictions make it impossible to use another battery with the
25 description: 3.8V 1500 mAh battery used in Samsung GT-I8190
27 description: 3.8V 1500 mAh battery used in Samsung SGH-T599 and SGH-I407
29 description: 3.8V 1500 mAh battery used in Samsung GT-I8160
31 description: 3.8V 1700 mAh battery used in Samsung GT-S7710
33 description: 3.8V 1500 mAh battery used in Samsung GT-I9070
35 description: 3.8V 2000 mAh battery used in Samsung GT-I8530
48 battery: battery {
54 monitored-battery = <&battery>;
Dstericsson,ab8500-battery.txt2 information about the battery connected to the PMIC.
8 A boolean value indicating thermistor interface to battery
11 'btemp' and 'batctrl' are the pins interfaced for battery temperature
13 coefficient) resister is interfaced external to battery whereas
14 'batctrl' pin is used when NTC resister is internal to battery.
20 indicates: NTC resister is internal to battery, 'batctrl' is used
24 NTC resister is external to battery and 'btemp' signal is used
27 battery-type:
28 This shall be the battery manufacturing technology type,
33 stericsson,battery-type = "LIPO";
Dlego,ev3-battery.yaml4 $id: http://devicetree.org/schemas/power/supply/lego,ev3-battery.yaml#
7 title: LEGO MINDSTORMS EV3 Battery
14 LEGO MINDSTORMS EV3 has some built-in capability for monitoring the battery.
15 It uses 6 AA batteries or a special Li-ion rechargeable battery pack that is
16 detected by a key switch in the battery compartment.
23 const: lego,ev3-battery
27 - description: ADC channel for battery voltage
28 - description: ADC channel for battery current
37 description: Rechargeable battery indication gpio
50 battery {
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Dbq24190.yaml8 title: Binding for TI BQ2419x Li-Ion Battery Charger
38 when power is connected and the battery is below minimum system voltage,
41 omit-battery-class:
45 battery device.
47 monitored-battery:
50 phandle to a "simple-battery" compatible node.
53 in battery.yaml, with the following properties being required:
55 (typically 20% of battery capacity).
56 - charge-term-current-microamp: a charge cycle terminates when the battery voltage is
58 setting (typically 10% of battery capacity).
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Drohm,bd99954.yaml7 title: ROHM BD99954 Battery charger
15 The ROHM BD99954 is a Battery Management LSI for 1-4 cell Lithium-Ion
16 secondary battery intended to be used in space-constraint equipment such
18 provides a Dual-source Battery Charger, two port BC1.2 detection and a
19 Battery Monitor.
26 # The battery charging profile of BD99954.
29 # Curve (2) represents battery voltage.
36 # Then constant voltage (CV) phase (after the battery voltage has reached
68 # The charger uses the following battery properties
91 # when battery voltage exceeds this limit voltage (3 in above chart)
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Dx-powers,axp20x-battery-power-supply.yaml4 $id: http://devicetree.org/schemas/power/supply/x-powers,axp20x-battery-power-supply.yaml#
7 title: AXP20x Battery power-supply
10 The supported devices can read the battery voltage, charge and discharge
11 currents of the battery by reading ADC channels from the ADC.
23 - const: x-powers,axp202-battery-power-supply
24 - const: x-powers,axp209-battery-power-supply
25 - const: x-powers,axp221-battery-power-supply
27 - const: x-powers,axp803-battery-power-supply
28 - const: x-powers,axp813-battery-power-supply
29 - const: x-powers,axp813-battery-power-supply
Dsc27xx-fg.yaml27 battery-detect-gpios:
32 - description: Battery Temperature ADC
33 - description: Battery Charge Voltage ADC
50 monitored-battery: true
55 - battery-detect-gpios
61 - monitored-battery
68 bat: battery {
69 compatible = "simple-battery";
87 battery@a00 {
90 battery-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>;
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Dsbs,sbs-manager.yaml60 batman: battery-manager@a {
74 battery@b {
75 compatible = "ti,bq20z65", "sbs,sbs-battery";
77 sbs,battery-detect-gpios = <&batman 1 1>;
86 battery@b {
87 compatible = "ti,bq20z65", "sbs,sbs-battery";
89 sbs,battery-detect-gpios = <&batman 2 1>;
98 battery@b {
99 compatible = "ti,bq20z65", "sbs,sbs-battery";
101 sbs,battery-detect-gpios = <&batman 3 1>;
/Linux-v6.1/Documentation/power/
Dcharger-manager.rst7 Charger Manager provides in-kernel battery charger management that
9 and where each battery may have multiple chargers attached and the userland
14 represents an independent battery with chargers. If there are multiple
27 different information about the battery status. This framework
32 While the battery is being charged and the system is in suspend-to-RAM,
33 we may need to monitor the battery health by looking at the ambient or
34 battery temperature. We can accomplish this by waking up the system
36 monitoring the battery health and tasks, and user processes that are
41 only affects the charging time, but the lifespan of the battery.
50 * Support for premature full-battery event handling
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Dpower_supply_class.rst7 Power supply class used to represent battery, UPS, AC or DC power supply
25 typically expected feedback of battery charging/fully charged status and
64 | of battery, this class distinguish these terms. Don't mix them!** |
85 `BATTERY_STATUS_*` values, as defined in battery.h.
94 indicates the power supply (battery or charger) connected
98 represents health of the battery, values corresponds to
99 POWER_SUPPLY_HEALTH_*, defined in battery.h.
102 open circuit voltage of the battery.
106 Maximal/minimal means values of voltages when battery considered
108 between voltage and battery capacity, but some dumb
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/Linux-v6.1/Documentation/ABI/testing/
Dsysfs-class-power37 Valid values: "Battery", "UPS", "Mains", "USB", "Wireless"
39 **Battery and USB properties**
45 Battery:
47 Reports an average IBAT current reading for the battery, over
68 Battery:
70 Reports the maximum IBAT current allowed into the battery.
84 Battery:
87 battery. This value is not averaged/smoothed.
108 Battery:
110 Reports the current TBAT battery temperature reading.
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/Linux-v6.1/Documentation/devicetree/bindings/rtc/
Drtc-palmas.txt10 - ti,backup-battery-chargeable: The Palmas series device like TPS65913 or
11 TPS80036 supports the backup battery for powering the RTC when main
12 battery is removed or in very low power state. The backup battery
14 battery is chargeable or not. If charging battery then driver can
16 - ti,backup-battery-charge-high-current: Enable high current charging in
17 backup battery. Device supports the < 100uA and > 100uA charging.
19 charge battery to lower current i.e. < 100uA.
28 ti,backup-battery-chargeable;
29 ti,backup-battery-charge-high-current;
/Linux-v6.1/include/linux/
Dpower_supply.h29 * For systems where the charger determines the maximum battery capacity
353 int vbat_uv; /* Battery voltage in microvolt */
360 * the charge of the battery full as current is consumed after full charging.
375 * for the battery.
382 * charger: instead they will at all times dissipate the battery a little, like
394 * battery and this causes degeneration of the battery anode and cathode.
395 * To prolong the life of the battery, maintenance charging is applied after
396 * reaching charge_term_current_ua to hold up the charge in the battery while
397 * consuming power, thus lowering the wear on the battery:
415 * As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
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/Linux-v6.1/Documentation/hwmon/
Dda9052.rst27 Channel 1 ICH - internal battery charger current measurement
28 Channel 2 TBAT - output from the battery NTC
29 Channel 3 VBAT - measurement of the battery voltage
36 Channel 9 VBBAT - measurement of the backup battery voltage
39 By using sysfs attributes we can measure the system voltage VDDOUT, the battery
40 charging current ICH, battery temperature TBAT, battery junction temperature
41 TJUNC, battery voltage VBAT and the back up battery voltage VBBAT.
48 The battery voltage is calculated as:
52 The backup battery voltage is calculated as:
63 Temperatures are sampled by a 10 bit ADC. Junction and battery temperatures
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