| /linux/Documentation/devicetree/bindings/iio/afe/ |
| H A D | current-sense-amplifier.yaml | 1 # 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
14 amplifier, the interesting measurement is almost always the current
15 through the sense resistor, not the voltage output. This binding
16 describes such a current sense circuit.
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| H A D | current-sense-shunt.yaml | 1 # 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,
14 the interesting measurement is almost always the current through the
15 shunt, not the voltage over it. This binding describes such a current
16 sense circuit.
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| H A D | temperature-sense-rtd.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/temperature-sense-rtd.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Temperature Sense RTD
10 - Liam Beguin <liambeguin@gmail.com>
17 When an io-channel measures the output voltage across an RTD such as a
25 T = 1 / (alpha * r0 * iexc) * (V - r0 * iexc)
30 -----
32 +---+----+
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| H A D | temperature-transducer.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/temperature-transducer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Liam Beguin <liambeguin@gmail.com>
15 voltage (like the LTC2997), and temperature to current (like the AD590)
19 When an io-channel measures the output voltage of a temperature analog front
31 The following circuits show a temperature to current and a temperature to
35 -----
37 +---+---+
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| /linux/drivers/s390/block/ |
| H A D | dasd_3990_erp.c | 1 // SPDX-License-Identifier: GPL-2.0
30 * 24 and 32 byte sense ERP functions
51 struct dasd_ccw_req *cqr = erp->refers; in dasd_3990_erp_cleanup()
53 dasd_free_erp_request(erp, erp->memdev); in dasd_3990_erp_cleanup()
54 cqr->status = final_status; in dasd_3990_erp_cleanup()
70 struct dasd_device *device = erp->startdev; in dasd_3990_erp_block_queue()
76 spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); in dasd_3990_erp_block_queue()
78 spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); in dasd_3990_erp_block_queue()
79 erp->status = DASD_CQR_FILLED; in dasd_3990_erp_block_queue()
80 if (erp->block) in dasd_3990_erp_block_queue()
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| /linux/Documentation/hwmon/ |
| H A D | ltc2945.rst | 10 Addresses scanned: -
14 https://www.analog.com/media/en/technical-documentation/data-sheets/2945fb.pdf
16 Author: Guenter Roeck <linux@roeck-us.net>
20 -----------
22 The LTC2945 is a rail-to-rail system monitor that measures current, voltage,
27 -----------
37 $ echo ltc2945 0x10 > /sys/bus/i2c/devices/i2c-1/new_device
41 -------------
49 Current reading provided by this driver is reported as obtained from the ADC
50 Current Sense register. The reported value assumes that a 1 mOhm sense resistor
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| H A D | ltc4260.rst | 10 Addresses scanned: -
16 Author: Guenter Roeck <linux@roeck-us.net>
20 -----------
27 -----------
37 $ echo ltc4260 0x10 > /sys/bus/i2c/devices/i2c-1/new_device
41 -------------
49 Current reading provided by this driver is reported as obtained from the ADC
50 Current Sense register. The reported value assumes that a 1 mOhm sense resistor
51 is installed. If a different sense resistor is installed, calculate the real
52 current by dividing the reported value by the sense resistor value in mOhm.
[all …]
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| H A D | max16065.rst | 11 Addresses scanned: -
15 http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf
21 Addresses scanned: -
25 http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf
31 Addresses scanned: -
35 http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf
41 Addresses scanned: -
45 http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf
47 Author: Guenter Roeck <linux@roeck-us.net>
51 -----------
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| H A D | ltc4261.rst | 10 Addresses scanned: -
16 Author: Guenter Roeck <linux@roeck-us.net>
20 -----------
22 The LTC4261/LTC4261-2 negative voltage Hot Swap controllers allow a board
27 -----------
37 $ echo ltc4261 0x10 > /sys/bus/i2c/devices/i2c-1/new_device
41 -------------
49 Current reading provided by this driver is reported as obtained from the ADC
50 Current Sense register. The reported value assumes that a 1 mOhm sense resistor
51 is installed. If a different sense resistor is installed, calculate the real
[all …]
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| H A D | ltc2990.rst | 11 Addresses scanned: -
19 - Mike Looijmans <mike.looijmans@topic.nl>
20 - Tom Levens <tom.levens@cern.ch>
24 -----------
26 LTC2990 is a Quad I2C Voltage, Current and Temperature Monitor.
29 measure current through a series resistor, or a temperature with an external
34 -----------
41 ----------------
52 in[1-4]_input Voltage at V[1-4] pin in millivolt
55 curr1_input Current in mA across V1-V2 assuming a 1mOhm sense resistor
[all …]
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| H A D | ltc4151.rst | 10 Addresses scanned: -
20 -----------
22 The LTC4151 is a High Voltage I2C Current and Voltage Monitor.
26 -----------
36 # echo ltc4151 0x6f > /sys/bus/i2c/devices/i2c-0/new_device
40 -------------
45 Current reading provided by this driver is reported as obtained from the Current
46 Sense register. The reported value assumes that a 1 mOhm sense resistor is
54 curr1_input SENSE current (mA)
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| /linux/Documentation/devicetree/bindings/iio/dac/ |
| H A D | adi,ad5755.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices AD5755 Multi-Channel DAC
10 - Sean Nyekjaer <sean.nyekjaer@prevas.dk>
15 - adi,ad5755
16 - adi,ad5755-1
17 - adi,ad5757
18 - adi,ad5735
19 - adi,ad5737
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| /linux/Documentation/devicetree/bindings/iio/temperature/ |
| H A D | adi,ltc2983.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices LTC2983, LTC2986, LTM2985 Multi-sensor Temperature system
10 - Nuno Sá <nuno.sa@analog.com>
13 Analog Devices LTC2983, LTC2984, LTC2986, LTM2985 Multi-Sensor Digital
16 https://www.analog.com/media/en/technical-documentation/data-sheets/2983fc.pdf
17 https://www.analog.com/media/en/technical-documentation/data-sheets/2984fb.pdf
18 https://www.analog.com/media/en/technical-documentation/data-sheets/29861fa.pdf
19 https://www.analog.com/media/en/technical-documentation/data-sheets/ltm2985.pdf
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| /linux/Documentation/devicetree/bindings/power/supply/ |
| H A D | bq2415x.yaml | 1 # 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 D | lltc,ltc294x.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
14 for the charge counter and adds voltage, current and temperature monitoring.
17 - Sebastian Reichel <sre@kernel.org>
20 - $ref: power-supply.yaml#
25 - lltc,ltc2941
26 - lltc,ltc2942
27 - lltc,ltc2943
28 - lltc,ltc2944
[all …]
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| /linux/drivers/iio/adc/ |
| H A D | max9611.c | 1 // 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
48 * max9611 current sense amplifier voltage output:
56 * The complete formula to calculate current sense voltage is:
57 * (((adc_read >> 4) - offset) / ((1 / LSB) * 10^-3)
71 * (((adc_read >> 4) * 1000) - offset) / (1 / 14 * 1000)
113 * max9611_mux_conf - associate ADC mux configuration with register address
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| /linux/drivers/iio/afe/ |
| H A D | iio-rescale.c | 1 // SPDX-License-Identifier: GPL-2.0
33 *val *= rescale->numerator; in rescale_process_scale()
34 if (rescale->denominator == 1) in rescale_process_scale()
36 *val2 = rescale->denominator; in rescale_process_scale()
44 if (!check_mul_overflow(*val, rescale->numerator, &_val) && in rescale_process_scale()
45 !check_mul_overflow(*val2, rescale->denominator, &_val2)) { in rescale_process_scale()
53 tmp = div_s64(tmp, rescale->denominator); in rescale_process_scale()
54 tmp *= rescale->numerator; in rescale_process_scale()
82 * *val = 1 and *val2 = -0.5 yields -1.5 not -0.5. in rescale_process_scale()
86 tmp = (s64)abs(*val) * abs(rescale->numerator); in rescale_process_scale()
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| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
13 that handles voltage dividers, current sense shunts and
14 current sense amplifiers.
17 module will be called iio-rescale.
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| /linux/Documentation/devicetree/bindings/iio/adc/ |
| H A D | maxim,max9611.yaml | 1 # 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:
28 RS- inputs, across which the current is measured. Value needed to compute
[all …]
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| H A D | microchip,pac1921.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Microchip PAC1921 High-Side Power/Current Monitor with Anaog Output
10 - Matteo Martelli <matteomartelli3@gmail.com>
13 The PAC1921 is a power/current monitoring device with an analog output
17 https://ww1.microchip.com/downloads/en/DeviceDoc/PAC1921-Data-Sheet-DS20005293E.pdf
26 vdd-supply: true
28 "#io-channel-cells":
31 shunt-resistor-micro-ohms:
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| /linux/drivers/hwmon/ |
| H A D | ltc4260.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
14 #include <linux/hwmon-sysfs.h>
58 * 300 uV resolution. Convert to current as measured with in ltc4260_get_value()
59 * an 1 mOhm sense resistor, in mA. If a different sense in ltc4260_get_value()
60 * resistor is installed, calculate the actual current by in ltc4260_get_value()
61 * dividing the reported current by the sense resistor value in ltc4260_get_value()
67 return -EINVAL; in ltc4260_get_value()
79 value = ltc4260_get_value(dev, attr->index); in ltc4260_value_show()
97 fault &= attr->index; in ltc4260_bool_show()
99 regmap_update_bits(regmap, LTC4260_FAULT, attr->index, 0); in ltc4260_bool_show()
[all …]
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| H A D | ltc4222.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
15 #include <linux/hwmon-sysfs.h>
74 * 62.5 uV resolution. Convert to current as measured with in ltc4222_get_value()
75 * an 1 mOhm sense resistor, in mA. If a different sense in ltc4222_get_value()
76 * resistor is installed, calculate the actual current by in ltc4222_get_value()
77 * dividing the reported current by the sense resistor value in ltc4222_get_value()
83 return -EINVAL; in ltc4222_get_value()
94 value = ltc4222_get_value(dev, attr->index); in ltc4222_value_show()
108 ret = regmap_read(regmap, attr->nr, &fault); in ltc4222_bool_show()
111 fault &= attr->index; in ltc4222_bool_show()
[all …]
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| /linux/Documentation/devicetree/bindings/iio/addac/ |
| H A D | adi,ad74115.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Cosmin Tanislav <cosmin.tanislav@analog.com>
13 The AD74115H is a single-channel software configurable input/output
17 chip solution with an SPI interface. The device features a 16-bit ADC and a
18 14-bit DAC.
25 - adi,ad74115h
30 spi-max-frequency:
33 spi-cpol: true
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| /linux/drivers/net/ethernet/mellanox/mlx4/ |
| H A D | sense.c | 14 * - Redistributions of source code must retain the above
18 * - Redistributions in binary form must reproduce the above
51 mlx4_err(dev, "Sense command failed for port: %d\n", port); in mlx4_SENSE_PORT()
56 mlx4_err(dev, "Sense returned illegal value: 0x%llx\n", out_param); in mlx4_SENSE_PORT()
57 return -EINVAL; in mlx4_SENSE_PORT()
68 struct mlx4_sense *sense = &mlx4_priv(dev)->sense; in mlx4_do_sense_ports() local
72 for (i = 1; i <= dev->caps.num_ports; i++) { in mlx4_do_sense_ports()
73 stype[i - 1] = 0; in mlx4_do_sense_ports()
74 if (sense->do_sense_port[i] && sense->sense_allowed[i] && in mlx4_do_sense_ports()
75 dev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) { in mlx4_do_sense_ports()
[all …]
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| /linux/drivers/scsi/ |
| H A D | scsi_error.c | 1 // SPDX-License-Identifier: GPL-2.0-only
66 lockdep_assert_held(shost->host_lock); in scsi_eh_wakeup()
68 if (busy == shost->host_failed) { in scsi_eh_wakeup()
70 wake_up_process(shost->ehandler); in scsi_eh_wakeup()
77 * scsi_schedule_eh - schedule EH for SCSI host
86 spin_lock_irqsave(shost->host_lock, flags); in scsi_schedule_eh()
90 shost->host_eh_scheduled++; in scsi_schedule_eh()
94 spin_unlock_irqrestore(shost->host_lock, flags); in scsi_schedule_eh()
100 if (!shost->last_reset || shost->eh_deadline == -1) in scsi_host_eh_past_deadline()
110 if (time_before(jiffies, shost->last_reset + shost->eh_deadline) && in scsi_host_eh_past_deadline()
[all …]
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