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/linux/drivers/power/supply/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
104 tristate "Active-semi ACT8945A charger driver"
108 Active-semi ActivePath ACT8945A charger.
153 Li+ batteries.
158 tristate "DS2782/DS2786 standalone gas-gauge"
162 gas-gauge.
208 tristate "Sharp SL-5500 (collie) battery"
212 SL-5500 (collie) models.
223 called ingenic-battery.
242 Say Y to include support for SBS battery driver for SBS-compliant
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H A Dlego_ev3_battery.c46 val->intval = batt->technology; in lego_ev3_battery_get_property()
50 ret = iio_read_channel_processed(batt->iio_v, &val->intval); in lego_ev3_battery_get_property()
54 val->intval *= 2000; in lego_ev3_battery_get_property()
55 val->intval += 50000; in lego_ev3_battery_get_property()
58 ret = iio_read_channel_processed(batt->iio_i, &val2); in lego_ev3_battery_get_property()
64 val->intval += val2; in lego_ev3_battery_get_property()
67 val->intval = batt->v_max; in lego_ev3_battery_get_property()
70 val->intval = batt->v_min; in lego_ev3_battery_get_property()
74 ret = iio_read_channel_processed(batt->iio_i, &val->intval); in lego_ev3_battery_get_property()
78 val->intval *= 20000; in lego_ev3_battery_get_property()
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H A Dpower_supply_sysfs.c1 // SPDX-License-Identifier: GPL-2.0-only
117 [POWER_SUPPLY_TECHNOLOGY_LION] = "Li-ion",
118 [POWER_SUPPLY_TECHNOLOGY_LIPO] = "Li-poly",
141 [POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE] = "inhibit-charge",
142 [POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE] = "force-discharge",
237 return to_ps_attr(attr) - power_supply_attrs; in dev_attr_psp()
262 return -EINVAL; in power_supply_show_enum_with_available()
266 buf[count - 1] = '\n'; in power_supply_show_enum_with_available()
281 value.intval = psy->desc->type; in power_supply_show_property()
286 if (ret == -ENODATA) in power_supply_show_property()
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H A Dqcom_smbb.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * This driver is for the multi-block Switch-Mode Battery Charger and Boost
6 * integrated, single-cell lithium-ion battery charger.
8 * Sub-components:
9 * - Charger core
10 * - Buck
11 * - DC charge-path
12 * - USB charge-path
13 * - Battery interface
14 * - Boost (not implemented)
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H A Dmax17040_battery.c1 // SPDX-License-Identifier: GPL-2.0
4 // fuel-gauge systems for lithium-ion (Li+) batteries
160 return regmap_write(chip->regmap, MAX17040_CMD, chip->data.reset_val); in max17040_reset()
165 level = 32 - level * (chip->quirk_double_soc ? 2 : 1); in max17040_set_low_soc_alert()
166 return regmap_update_bits(chip->regmap, MAX17040_CONFIG, in max17040_set_low_soc_alert()
172 return regmap_update_bits(chip->regmap, MAX17040_CONFIG, in max17040_set_soc_alert()
178 u16 mask = chip->data.rcomp_bytes == 2 ? in max17040_set_rcomp()
181 return regmap_update_bits(chip->regmap, MAX17040_CONFIG, mask, rcomp); in max17040_set_rcomp()
186 struct chip_data *d = &chip->data; in max17040_raw_vcell_to_uvolts()
188 return (vcell >> d->vcell_shift) * d->vcell_mul / d->vcell_div; in max17040_raw_vcell_to_uvolts()
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H A Dsurface_battery.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Battery driver for 7th-generation Microsoft Surface devices via Surface
6 * Copyright (C) 2019-2021 Maximilian Luz <luzmaximilian@gmail.com>
22 /* -- SAM interface. -------------------------------------------------------- */
112 /* -- Device structures. ---------------------------------------------------- */
140 /* -- Module parameters. ---------------------------------------------------- */
147 /* -- State management. ----------------------------------------------------- */
157 lockdep_assert_held(&bat->lock); in spwr_battery_present()
159 return le32_to_cpu(bat->sta) & SAM_BATTERY_STA_PRESENT; in spwr_battery_present()
164 lockdep_assert_held(&bat->lock); in spwr_battery_load_sta()
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H A Dab8500_fg.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) ST-Ericsson AB 2012
5 * Main and Back-up battery management driver.
7 * Note: Backup battery management is required in case of Li-Ion battery and not
37 #include <linux/fixp-arith.h>
39 #include "ab8500-bm.h"
49 /* Currents higher than -500mA (dissipating) will make compensation unstable */
50 #define IGNORE_VBAT_HIGHCUR -500000
63 * struct ab8500_fg_interrupts - ab8500 fg interrupts
153 * struct ab8500_fg - ab8500 FG device information
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/linux/Documentation/devicetree/bindings/power/supply/
H A Drichtek,rt9471.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Alina Yu <alina_yu@richtek.com>
11 - ChiYuan Huang <cy_huang@richtek.com>
14 RT9471 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for
19 https://www.richtek.com/assets/product_file/RT9471=RT9471D/DS9471D-02.pdf
28 charge-enable-gpios:
32 wakeup-source: true
37 usb-otg-vbus-regulator:
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H A Drichtek,rt9467.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
11 - ChiaEn Wu <chiaen_wu@richtek.com>
14 RT9467 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for
16 MOSFETs, input current sensing and regulation, high-accuracy voltage
20 The RT9467 also features USB On-The-Go (OTG) support. It also integrates
21 D+/D- pin for USB host/charging port detection.
24 https://www.richtek.com/assets/product_file/RT9467/DS9467-01.pdf
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H A Dlego,ev3-battery.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/supply/lego,ev3-battery.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - David Lechner <david@lechnology.com>
11 - Sebastian Reichel <sre@kernel.org>
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
19 - $ref: power-supply.yaml#
23 const: lego,ev3-battery
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H A Dbq256xx.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Andrew Davis <afd@ti.com>
14 The bq256xx devices are a family of highly-integrated battery charge
15 management and system power management ICs for single cell Li-ion and Li-
19 - https://www.ti.com/lit/ds/symlink/bq25600.pdf
20 - https://www.ti.com/lit/ds/symlink/bq25601.pdf
21 - https://www.ti.com/lit/ds/symlink/bq25600d.pdf
22 - https://www.ti.com/lit/ds/symlink/bq25601d.pdf
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H A Dbq24190.yaml1 # SPDX-License-Identifier: GPL-2.0
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: TI BQ2419x Li-Ion Battery Charger
11 - Sebastian Reichel <sre@kernel.org>
14 - $ref: power-supply.yaml#
19 - ti,bq24190
20 - ti,bq24192
21 - ti,bq24192i
22 - ti,bq24196
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H A Dbq2415x.yaml1 # SPDX-License-Identifier: GPL-2.0
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: TI bq2415x Li-Ion Charger
11 - Sebastian Reichel <sre@kernel.org>
14 - $ref: power-supply.yaml#
19 - ti,bq24150
20 - ti,bq24150a
21 - ti,bq24151
22 - ti,bq24151a
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H A Dbq24735.yaml1 # SPDX-License-Identifier: GPL-2.0
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: TI BQ24735 Li-Ion Battery Charger
11 - Sebastian Reichel <sre@kernel.org>
14 - $ref: power-supply.yaml#
27 ti,ac-detect-gpios:
35 ti,charge-current:
43 ti,charge-voltage:
51 ti,input-current:
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H A Dbq25890.yaml1 # SPDX-License-Identifier: GPL-2.0
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Bq25890, bq25892, bq25895 and bq25896 Li-Ion Charger
11 - Sebastian Reichel <sre@kernel.org>
14 - $ref: power-supply.yaml#
19 - enum:
20 - ti,bq25890
21 - items:
22 - enum:
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H A Dbq24257.yaml1 # SPDX-License-Identifier: GPL-2.0
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Bq24250, bq24251 and bq24257 Li-Ion Charger
11 - Sebastian Reichel <sre@kernel.org>
14 - $ref: power-supply.yaml#
19 - ti,bq24250
20 - ti,bq24251
21 - ti,bq24257
29 ti,battery-regulation-voltage:
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/linux/tools/testing/selftests/power_supply/
H A Dtest_power_supply_properties.sh2 # SPDX-License-Identifier: GPL-2.0
11 DIR="$(dirname "$(readlink -f "$0")")"
36 if [ $# -eq 0 ]; then
47 if [ ! -d "$SYSFS_SUPPLIES"/"$DEVNAME" ]; then
77 test_sysfs_prop_optional_list technology "Unknown","NiMH","Li-ion","Li-poly","LiFe","NiCd","LiMn"
86 # Technically the power-supply class does not limit reported values.
87 # E.g. one could expose an RTC backup-battery, which goes below 1.5V or
89 # have a step-up capable regulator behind the battery and operate with
91 # 1.8V-60V to catch drivers reporting incorrectly scaled values. E.g. a
/linux/Documentation/devicetree/bindings/mfd/
H A Dmediatek,mt6370.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
13 MT6370 is a highly-integrated smart power management IC, which includes a
14 single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C &
26 wakeup-source: true
31 interrupt-controller: true
33 "#interrupt-cells":
46 const: mediatek,mt6370-adc
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/linux/arch/arm/mach-sa1100/
H A Dassabet.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-sa1100/assabet.c
7 * This file contains all Assabet-specific tweaks.
14 #include <linux/gpio/gpio-reg.h>
18 #include <linux/platform_data/sa11x0-serial.h>
34 #include <asm/mach-types.h>
37 #include <asm/pgtable-hwdef.h>
44 #include <linux/platform_data/mfd-mcp-sa11x0.h>
83 assabet_bcr_gc->set_multiple(assabet_bcr_gc, &m, &v); in ASSABET_BCR_frob()
93 gc = gpio_reg_init(NULL, reg, -1, 32, "assabet", 0xff000000, def_val, in assabet_init_gpio()
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/linux/arch/arm/boot/dts/ti/davinci/
H A Dda850-lego-ev3.dts1 // SPDX-License-Identifier: GPL-2.0-only
8 /dts-v1/;
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/input/linux-event-codes.h>
11 #include <dt-bindings/pwm/pwm.h>
32 compatible = "gpio-keys";
34 pinctrl-names = "default";
35 pinctrl-0 = <&button_bias>;
75 * The EV3 has two built-in bi-color LEDs behind the buttons.
78 compatible = "gpio-leds";
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/linux/include/linux/
H A Dpower_supply.h1 /* SPDX-License-Identifier: GPL-2.0-only */
226 /* Run-time specific power supply configuration */
356 * struct power_supply_maintenance_charge_table - setting for maintenace charging
389 * +-------------------------------------------------------------------> t
391 * Practically this means that the Li-ions are wandering back and forth in the
402 * +-------------------------------------------------------------------> t
413 * As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
428 * the expected stand-by current. Also overvoltage protection will be applied
440 * struct power_supply_battery_info - information about batteries
567 * for example 10 for +/- 10%, if the bti_resistance is set to 7000 and the
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/linux/Documentation/ABI/testing/
H A Dsysfs-class-power5 Contact: linux-pm@vger.kernel.org
14 Contact: linux-pm@vger.kernel.org
23 Contact: linux-pm@vger.kernel.org
32 Contact: linux-pm@vger.kernel.org
43 Contact: linux-pm@vger.kernel.org
66 Contact: linux-pm@vger.kernel.org
81 Contact: linux-pm@vger.kernel.org
94 read-only reporting, unless the 'online' state of the supply
106 Contact: linux-pm@vger.kernel.org
124 Contact: linux-pm@vger.kernel.org
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/linux/drivers/media/usb/gspca/
H A Dmr97310a.c1 // SPDX-License-Identifier: GPL-2.0-or-later
14 * Thomas Kaiser <thomas@kaiser-linux.li>
21 * Thomas Kaiser <thomas@kaiser-linux.li> and
63 MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
67 static int force_sensor_type = -1;
69 MODULE_PARM_DESC(force_sensor_type, "Force sensor type (-1 (auto), 0 or 1)");
122 /* the bytes to write are in gspca_dev->usb_buf */
127 rc = usb_bulk_msg(gspca_dev->dev, in mr_write()
128 usb_sndbulkpipe(gspca_dev->dev, 4), in mr_write()
129 gspca_dev->usb_buf, len, NULL, 500); in mr_write()
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/linux/drivers/platform/x86/x86-android-tablets/
H A Dlenovo.c1 // SPDX-License-Identifier: GPL-2.0-or-later
8 * Copyright (C) 2021-2023 Hans de Goede <hdegoede@redhat.com>
27 #include "shared-psy-info.h"
28 #include "x86-android-tablets.h"
33 * The Android kernels have a hack in the i915 driver to write a non-standard
34 * panel specific DSI register to set the duty-cycle of the LCD's PWM output.
46 * But on some models the panel's PWM output defaults to a duty-cycle of
65 PROPERTY_ENTRY_U32("hid-descr-addr", 0x0001),
66 PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 150),
75 * The HiDeep IST940E touchscreen comes up in I2C-HID mode. The native protocol
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/linux/drivers/acpi/
H A Dbattery.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * battery.c - ACPI Battery Driver (Revision: 2.0)
6 * Copyright (C) 2004-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com>
79 * Pre-2010 and 2012 models appear to always report in mWh and
81 * and x230). Also, in mid-2012 Lenovo issued a BIOS update for
83 * post-1.29 BIOS), but as of Nov. 2012, no such update is
134 return battery->device->status.battery_present; in acpi_battery_present()
139 if (!strcasecmp("NiCd", battery->type)) in acpi_battery_technology()
141 if (!strcasecmp("NiMH", battery->type)) in acpi_battery_technology()
143 if (!strcasecmp("LION", battery->type)) in acpi_battery_technology()
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