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/linux/Documentation/devicetree/bindings/iio/adc/
H A Dst,stm32-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/st,stm32-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics STM32 ADC
10 STM32 ADC is a successive approximation analog-to-digital converter.
11 It has several multiplexed input channels. Conversions can be performed
12 in single, continuous, scan or discontinuous mode. Result of the ADC is
13 stored in a left-aligned or right-aligned 32-bit data register.
17 voltage goes beyond the user-defined, higher or lower thresholds.
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H A Dst,stm32-dfsdm-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/st,stm32-dfsdm-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics STM32 DFSDM ADC device driver
10 - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
11 - Olivier Moysan <olivier.moysan@foss.st.com>
14 STM32 DFSDM ADC is a sigma delta analog-to-digital converter dedicated to
17 - Sigma delta modulators (motor control, metering...)
18 - PDM microphones (audio digital microphone)
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H A Dti,am3359-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/ti,am3359-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI AM3359 ADC
10 - Miquel Raynal <miquel.raynal@bootlin.com>
15 - enum:
16 - ti,am3359-adc
17 - ti,am4372-adc
18 - items:
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H A Datmel,sama9260-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/atmel,sama9260-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: AT91 sama9260 and similar Analog to Digital Converter (ADC)
10 - Alexandre Belloni <alexandre.belloni@bootlin.com>
15 - atmel,at91sam9260-adc
16 - atmel,at91sam9rl-adc
17 - atmel,at91sam9g45-adc
18 - atmel,at91sam9x5-adc
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H A Dcosmic,10001-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/cosmic,10001-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Cosmic Circuits CC-10001 ADC
10 - Jonathan Cameron <jic23@kernel.org>
13 Cosmic Circuits 10001 10-bit ADC device.
17 const: cosmic,10001-adc
22 adc-reserved-channels:
25 Bitmask of reserved channels, i.e. channels that cannot be
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H A Dadi,ad7124.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/iio/adc/adi,ad7124.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Analog Devices AD7124 ADC device driver
11 - Stefan Popa <stefan.popa@analog.com>
14 Bindings for the Analog Devices AD7124 ADC device. Datasheet can be
16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-8.pdf
21 - adi,ad7124-4
22 - adi,ad7124-8
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H A Daspeed,ast2600-adc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/aspeed,ast2600-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ADC that forms part of an ASPEED server management processor.
10 - Billy Tsai <billy_tsai@aspeedtech.com>
13 • 10-bits resolution for 16 voltage channels.
15 channels.
16 • Channel scanning can be non-continuous.
17 • Programmable ADC clock frequency.
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/linux/drivers/iio/adc/
H A Dstm32-adc.c1 // SPDX-License-Identifier: GPL-2.0
3 * This file is part of STM32 ADC driver
5 * Copyright (C) 2016, STMicroelectronics - All Rights Reserved
12 #include <linux/dma-mapping.h>
16 #include <linux/iio/timer/stm32-lptim-trigger.h>
17 #include <linux/iio/timer/stm32-timer-trigger.h>
26 #include <linux/nvmem-consumer.h>
31 #include "stm32-adc-core.h"
36 /* BOOST bit must be set on STM32H7 when ADC clock is above 20MHz */
39 #define STM32_ADC_CH_MAX 20 /* max number of channels */
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H A Dmcp320x.c1 // SPDX-License-Identifier: GPL-2.0-only
8 * Driver for following ADC chips from Microchip Technology's:
14 * ------------
20 * ------------
23 * ------------
65 const struct iio_chan_spec *channels; member
72 * struct mcp320x - Microchip SPI ADC instance
74 * @msg: SPI message to select a channel and receive a value from the ADC
80 * @chip_info: ADC properties
81 * @tx_buf: buffer for @transfer[0] (not used on single-channel converters)
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H A Dmcp3911.c1 // SPDX-License-Identifier: GPL-2.0
3 * Driver for Microchip MCP3911, Two-channel Analog Front End
85 /* Maximal number of channels used by the MCP39XX family */
103 const struct iio_chan_spec *channels; member
106 int (*config)(struct mcp3911 *adc, bool external_vref);
107 int (*get_osr)(struct mcp3911 *adc, u32 *val);
108 int (*set_osr)(struct mcp3911 *adc, u32 val);
109 int (*enable_offset)(struct mcp3911 *adc, bool enable);
110 int (*get_offset)(struct mcp3911 *adc, int channel, int *val);
111 int (*set_offset)(struct mcp3911 *adc, int channel, int val);
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H A Dqcom-pm8xxx-xoadc.c1 // SPDX-License-Identifier: GPL-2.0-only
7 * specific-purpose and general purpose ADC converters and channels.
13 #include <linux/iio/adc/qcom-vadc-common.h>
27 * Qualcomm tree. Their kernel has two out-of-tree drivers for the ADC:
28 * drivers/misc/pmic8058-xoadc.c
29 * drivers/hwmon/pm8xxx-adc.c
57 /* Proper ADC registers */
99 * On a later ADC the decimation factors are defined as
123 * Physical channels which MUST exist on all PM variants in order to provide
155 * struct xoadc_channel - encodes channel properties and defaults
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H A Dad7944.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Analog Devices AD7944/85/86 PulSAR ADC family driver.
37 /* datasheet calls this "4-wire mode" */
39 /* datasheet calls this "3-wire mode" (not related to SPI_3WIRE!) */
45 /* maps adi,spi-mode property value to enum */
58 /* Chip-specific timing specifications. */
64 /* Indicates TURBO is hard-wired to be always enabled. */
98 const struct iio_chan_spec channels[2]; member
102 * AD7944_DEFINE_CHIP_INFO - Define a chip info structure for a specific chip
112 .channels = { \
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H A Dti-adc084s021.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Driver for Texas Instruments' ADC084S021 ADC chip.
31 __be16 channels[4]; member
39 __be16 rx_buf[5]; /* First 16-bits are trash */
68 * adc084s021_adc_conversion() - Read an ADC channel and return its value.
70 * @adc: The ADC SPI data.
73 static int adc084s021_adc_conversion(struct adc084s021 *adc, __be16 *data) in adc084s021_adc_conversion() argument
75 int n_words = (adc->spi_trans.len >> 1) - 1; /* Discard first word */ in adc084s021_adc_conversion()
79 ret = spi_sync(adc->spi, &adc->message); in adc084s021_adc_conversion()
84 *(data + i) = adc->rx_buf[i + 1]; in adc084s021_adc_conversion()
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H A Dstm32-dfsdm-adc.c1 // SPDX-License-Identifier: GPL-2.0
3 * This file is the ADC part of the STM32 DFSDM driver
5 * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
10 #include <linux/dma-mapping.h>
11 #include <linux/iio/adc/stm32-dfsdm-adc.h>
14 #include <linux/iio/hw-consumer.h>
16 #include <linux/iio/timer/stm32-lptim-trigger.h>
17 #include <linux/iio/timer/stm32-timer-trigger.h>
29 #include "stm32-dfsdm.h"
44 /* Limit filter output resolution to 31 bits. (i.e. sample range is +/-2^30) */
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H A Dmcp3564.c1 // SPDX-License-Identifier: GPL-2.0+
3 * IIO driver for MCP356X/MCP356XR and MCP346X/MCP346XR series ADC chip family
5 * Copyright (C) 2022-2023 Microchip Technology Inc. and its subsidiaries
10 …s/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP3561-2-4-Family-Data-Sheet-DS20006181…
12 …ds/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3561_2_4R-Data-Sheet-DS200006391C.pdf
14 …ProductDocuments/DataSheets/MCP3461-2-4-Two-Four-Eight-Channel-153.6-ksps-Low-Noise-16-Bit-Delta-S…
16 …/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3461-2-4R-Family-Data-Sheet-DS20006404…
64 * ADC Output Data Format 32-bit (25-bit right justified data + Channel ID):
65 * CHID[3:0] + SGN extension (4 bits) + 24-bit ADC data.
70 * ADC Output Data Format 32-bit (25-bit right justified data):
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H A Dti-adc0832.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * ADC0831/ADC0832/ADC0834/ADC0838 8-bit ADC driver
7 * Datasheet: https://www.ti.com/lit/ds/symlink/adc0832-n.pdf
33 * Max size needed: 16x 1 byte ADC data + 8 bytes timestamp
34 * May be shorter if not all channels are enabled subject
120 static int adc0831_adc_conversion(struct adc0832 *adc) in adc0831_adc_conversion() argument
122 struct spi_device *spi = adc->spi; in adc0831_adc_conversion()
125 ret = spi_read(spi, &adc->rx_buf, 2); in adc0831_adc_conversion()
130 * Skip TRI-STATE and a leading zero in adc0831_adc_conversion()
132 return (adc->rx_buf[0] << 2 & 0xff) | (adc->rx_buf[1] >> 6); in adc0831_adc_conversion()
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H A Dti_am335x_adc.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * TI ADC MFD driver
5 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
26 #include <linux/dma-mapping.h>
45 int channels; member
54 static unsigned int tiadc_readl(struct tiadc_device *adc, unsigned int reg) in tiadc_readl() argument
56 return readl(adc->mfd_tscadc->tscadc_base + reg); in tiadc_readl()
59 static void tiadc_writel(struct tiadc_device *adc, unsigned int reg, in tiadc_writel() argument
62 writel(val, adc->mfd_tscadc->tscadc_base + reg); in tiadc_writel()
69 step_en = ((1 << adc_dev->channels) - 1); in get_adc_step_mask()
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # ADC drivers
10 bool "ST-Ericsson AB8500 GPADC driver"
25 tristate "Analog Devices AD4000 ADC Driver"
31 SPI analog to digital converters (ADC).
37 tristate "Analog Device AD4130 ADC Driver"
45 Say yes here to build support for Analog Devices AD4130-8 SPI analog
46 to digital converters (ADC).
52 tristate "Analog Device AD4695 ADC Driver"
59 analog to digital converters (ADC).
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/linux/Documentation/devicetree/bindings/input/touchscreen/
H A Dresistive-adc-touch.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/touchscreen/resistive-adc-touch.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic resistive touchscreen ADC
10 - Oleksij Rempel <o.rempel@pengutronix.de>
13 Generic ADC based resistive touchscreen controller
14 The device must be connected to an ADC device that provides channels for
18 - $ref: touchscreen.yaml#
22 const: resistive-adc-touch
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/linux/drivers/hwmon/
H A Dadcxx.c1 // SPDX-License-Identifier: GPL-2.0-or-later
11 * ADC<bb><c>S<sss>, where
13 * * c is the number of channels (1, 2, 4, 8)
18 * http://www.national.com/ds/DC/ADC<bb><c>S<sss>.pdf
32 #include <linux/hwmon-sysfs.h>
42 u32 channels; member
52 struct adcxx *adc = spi_get_drvdata(spi); in adcxx_show() local
58 if (mutex_lock_interruptible(&adc->lock)) in adcxx_show()
59 return -ERESTARTSYS; in adcxx_show()
61 if (adc->channels == 1) { in adcxx_show()
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/linux/drivers/thermal/qcom/
H A Dqcom-spmi-adc-tm5.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
12 #include <linux/iio/adc/qcom-vadc-common.h>
26 * Thermal monitoring block consists of 8 (ADC_TM5_NUM_CHANNELS) channels. Each
27 * channel is programmed to use one of ADC channels for voltage comparison.
28 * Voltages are programmed using ADC codes, so we have to convert temp to
29 * voltage and then to ADC code value.
31 * Configuration of TM channels must match configuration of corresponding ADC
32 * channels.
178 * struct adc_tm5_channel - ADC Thermal Monitoring channel data.
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/linux/Documentation/devicetree/bindings/thermal/
H A Dqcom-spmi-adc-tm5.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/thermal/qcom-spmi-adc-tm5.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Qualcomm's SPMI PMIC ADC Thermal Monitoring
9 - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
11 $ref: thermal-sensor.yaml#
16 - qcom,spmi-adc-tm5
17 - qcom,spmi-adc-tm5-gen2
18 - qcom,adc-tm7 # Incomplete / subject to change
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H A Dqcom-spmi-adc-tm-hc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/thermal/qcom-spmi-adc-tm-hc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Qualcomm's SPMI PMIC ADC HC Thermal Monitoring
9 - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
11 $ref: thermal-sensor.yaml#
15 const: qcom,spmi-adc-tm-hc
23 "#thermal-sensor-cells":
26 "#address-cells":
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/linux/Documentation/devicetree/bindings/input/
H A Dadc-joystick.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 # Copyright 2019-2020 Artur Rojek
4 ---
5 $id: http://devicetree.org/schemas/input/adc-joystick.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: ADC attached joystick
11 - Artur Rojek <contact@artur-rojek.eu>
14 Bindings for joystick devices connected to ADC controllers supporting
18 - $ref: input.yaml#
22 const: adc-joystick
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/linux/arch/arm/boot/dts/
H A Dcros-adc-thermistors.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
4 * children of the IIO based ADC.
12 &adc {
15 pullup-uv = <1800000>;
16 pullup-ohm = <47000>;
17 pulldown-ohm = <0>;
18 io-channels = <&adc 3>;
22 pullup-uv = <1800000>;
23 pullup-ohm = <47000>;
24 pulldown-ohm = <0>;
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