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/Linux-v5.15/Documentation/devicetree/bindings/iio/afe/
Dcurrent-sense-amplifier.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/current-sense-amplifier.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Current Sense Amplifier
10 - Peter Rosin <peda@axentia.se>
13 When an io-channel measures the output voltage from a current sense
15 through the sense resistor, not the voltage output. This binding
16 describes such a current sense circuit.
20 const: current-sense-amplifier
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Dcurrent-sense-shunt.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/current-sense-shunt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Current Sense Shunt
10 - Peter Rosin <peda@axentia.se>
13 When an io-channel measures the voltage over a current sense shunt,
16 sense circuit.
20 const: current-sense-shunt
22 io-channels:
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/Linux-v5.15/Documentation/devicetree/bindings/iio/adc/
Dmaxim,max9611.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Maxim MAX9611 and similar current sense amplifiers with integrated ADCs
10 - Jacopo Mondi <jacopo@jmondi.org>
13 These devices combine a high-side current sense amplifier with a 12 bit ADC.
19 - maxim,max9611
20 - maxim,max9612
25 shunt-resistor-micro-ohms:
27 Value in micro Ohms of the shunt resistor connected between the RS+ and
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/Linux-v5.15/Documentation/devicetree/bindings/power/supply/
Dltc4162-l.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: "http://devicetree.org/schemas/power/supply/ltc4162-l.yaml#"
6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
8 title: Linear Technology (Analog Devices) LTC4162-L Charger
11 - Mike Looijmans <mike.looijmans@topic.nl>
14 The LTC ® 4162-L is an advanced monolithic synchronous step-down switching
17 panels, etc., and a rechargeable Lithium-Ion/Polymer battery.
20 https://www.analog.com/en/products/ltc4162-s.html
25 - lltc,ltc4162-l
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Dmaxim,max17042.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
10 - Sebastian Reichel <sre@kernel.org>
13 - $ref: power-supply.yaml#
18 - maxim,max17042
19 - maxim,max17047
20 - maxim,max17050
21 - maxim,max17055
22 - maxim,max77849-battery
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/Linux-v5.15/Documentation/devicetree/bindings/hwmon/
Dadi,ltc2992.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Alexandru Tachici <alexandru.tachici@analog.com>
14 https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2992.pdf
19 - adi,ltc2992
24 '#address-cells':
27 '#size-cells':
30 avcc-supply: true
33 "^channel@([0-1])$":
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Dadi,adm1177.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <michael.hennerich@analog.com>
11 - Beniamin Bia <beniamin.bia@analog.com>
15 https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1177.pdf
20 - adi,adm1177
25 avcc-supply:
29 shunt-resistor-micro-ohms:
31 The value of curent sense resistor in microohms. If not provided,
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Dti,tps23861.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Robert Marko <robert.marko@sartura.hr>
14 The TPS23861 is a IEEE 802.3at Quad Port Power-over-Ethernet PSE Controller.
23 - ti,tps23861
28 shunt-resistor-micro-ohms:
29 description: The value of curent sense resistor in microohms.
35 - compatible
36 - reg
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/Linux-v5.15/drivers/iio/afe/
Diio-rescale.c1 // SPDX-License-Identifier: GPL-2.0
47 if (rescale->chan_processed) in rescale_read_raw()
53 return iio_read_channel_processed(rescale->source, val); in rescale_read_raw()
55 return iio_read_channel_raw(rescale->source, val); in rescale_read_raw()
58 if (rescale->chan_processed) { in rescale_read_raw()
60 * Processed channels are scaled 1-to-1 in rescale_read_raw()
66 ret = iio_read_channel_scale(rescale->source, val, val2); in rescale_read_raw()
70 *val *= rescale->numerator; in rescale_read_raw()
71 *val2 *= rescale->denominator; in rescale_read_raw()
74 *val *= rescale->numerator; in rescale_read_raw()
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/Linux-v5.15/drivers/hwmon/
Dltc4151.c1 // SPDX-License-Identifier: GPL-2.0-or-later
25 #include <linux/hwmon-sysfs.h>
42 unsigned int shunt; /* in micro ohms */
51 struct i2c_client *client = data->client; in ltc4151_update_device()
54 mutex_lock(&data->update_lock); in ltc4151_update_device()
58 * (Conversion Rate 6 - 9 Hz) in ltc4151_update_device()
60 if (time_after(jiffies, data->last_updated + HZ / 6) || !data->valid) { in ltc4151_update_device()
63 dev_dbg(&client->dev, "Starting ltc4151 update\n"); in ltc4151_update_device()
66 for (i = 0; i < ARRAY_SIZE(data->regs); i++) { in ltc4151_update_device()
77 data->regs[i] = val; in ltc4151_update_device()
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Dadm1177.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright 2015-2019 Analog Devices Inc.
27 * struct adm1177_state - driver instance specific data
30 * @r_sense_uohm: current sense resistor value
44 return i2c_master_recv(st->client, data, num); in adm1177_read_raw()
49 return i2c_smbus_write_byte(st->client, cmd); in adm1177_write_cmd()
58 val = 0xFFULL * alert_threshold_ua * st->r_sense_uohm; in adm1177_write_alert_thr()
64 ret = i2c_smbus_write_byte_data(st->client, ADM1177_REG_ALERT_TH, in adm1177_write_alert_thr()
69 st->alert_threshold_ua = alert_threshold_ua; in adm1177_write_alert_thr()
94 4096 * st->r_sense_uohm); in adm1177_read()
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/Linux-v5.15/drivers/iio/adc/
Dqcom-spmi-iadc.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
72 #define IADC_INT_RSENSE_DEVIATION 15625 /* nano Ohms per bit */
74 #define IADC_INT_RSENSE_IDEAL_VALUE 10000 /* micro Ohms */
75 #define IADC_INT_RSENSE_DEFAULT_VALUE 7800 /* micro Ohms */
76 #define IADC_INT_RSENSE_DEFAULT_GF 9000 /* micro Ohms */
77 #define IADC_INT_RSENSE_DEFAULT_SMIC 9700 /* micro Ohms */
95 * struct iadc_chip - IADC Current ADC device structure.
99 * @rsense: Values of the internal and external sense resister in micro Ohms.
123 ret = regmap_read(iadc->regmap, iadc->base + offset, &val); in iadc_read()
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Dmax9611.c1 // SPDX-License-Identifier: GPL-2.0
5 * Maxim max9611/max9612 high side current sense amplifier with
6 * 12-bit ADC interface.
12 * This driver supports input common-mode voltage, current-sense
16 * Op-amp, analog comparator, and watchdog functionalities are not
49 * max9611 current sense amplifier voltage output:
57 * The complete formula to calculate current sense voltage is:
58 * (((adc_read >> 4) - offset) / ((1 / LSB) * 10^-3)
72 * (((adc_read >> 4) * 1000) - offset) / (1 / 14 * 1000)
114 * max9611_mux_conf - associate ADC mux configuration with register address
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/Linux-v5.15/include/linux/power/
Dmax17042_battery.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
191 /* External current sense resistor value in milli-ohms */
255 * R_sns in micro-ohms.
/Linux-v5.15/arch/arm/boot/dts/
Dste-ux500-samsung-janice.dts1 // SPDX-License-Identifier: GPL-2.0-only
3 * Devicetree for the Samsung Galaxy S Advance GT-I9070 also known as Janice.
6 /dts-v1/;
7 #include "ste-db8500.dtsi"
8 #include "ste-ab8500.dtsi"
9 #include "ste-dbx5x0-pinctrl.dtsi"
10 #include <dt-bindings/gpio/gpio.h>
11 #include <dt-bindings/leds/common.h>
12 #include <dt-bindings/input/input.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
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Ds5pv210-aries.dtsi1 // SPDX-License-Identifier: GPL-2.0
6 /dts-v1/;
7 #include <dt-bindings/gpio/gpio.h>
8 #include <dt-bindings/interrupt-controller/irq.h>
32 reserved-memory {
33 #address-cells = <1>;
34 #size-cells = <1>;
38 compatible = "shared-dma-pool";
39 no-map;
44 compatible = "shared-dma-pool";
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/Linux-v5.15/drivers/hwmon/pmbus/
Dadm1275.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller
110 [0] = { 27169, 0, -1 }, /* voltage */
111 [1] = { 806, 20475, -1 }, /* current, irange25 */
112 [2] = { 404, 20475, -1 }, /* current, irange50 */
113 [3] = { 8549, 0, -1 }, /* power, irange25 */
114 [4] = { 4279, 0, -1 }, /* power, irange50 */
118 [0] = { 6770, 0, -2 }, /* voltage, vrange 60V */
119 [1] = { 4062, 0, -2 }, /* voltage, vrange 100V */
120 [2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */
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/Linux-v5.15/drivers/power/supply/
Dbq25890_charger.c1 // SPDX-License-Identifier: GPL-2.0-or-later
86 u8 rbatcomp; /* IBAT sense resistor value */
251 * Most of the val -> idx conversions can be computed, given the minimum,
320 ret = regmap_field_read(bq->rmap_fields[field_id], &val); in bq25890_field_read()
330 return regmap_field_write(bq->rmap_fields[field_id], val); in bq25890_field_write()
347 rtbl_size = (rtbl->max - rtbl->min) / rtbl->step + 1; in bq25890_find_idx()
350 idx < rtbl_size && (idx * rtbl->step + rtbl->min <= value); in bq25890_find_idx()
355 return idx - 1; in bq25890_find_idx()
369 return (rtbl->min + idx * rtbl->step); in bq25890_find_val()
409 mutex_lock(&bq->lock); in bq25890_power_supply_get_property()
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