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Merge tag 'iio-for-5.3b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

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Jonathan writes:

Second set of IIO device support, features, cleanups and minor fixes for 5.3.

A few bits for the counters subsystem mixed in here as well.
There are some late breaking fixes as well, which aren't so urgent
they can't wait for the merge window.

New Device Support
* adf4371
  - New driver + bindings.
  - Support the adf4372 PLL. Mostly ID and bindings.
* ad8366 (note includes rework of driver needed to allow support for these).
  - Support the ADL5240 variable gain amplifier (VGA).
  - Support the ADA4961 digital gain amplifier (DGA).
* dps310
  - New driver, in several parts from different authors for this temp
    and pressure sensor.
  - Includes errata workaround for a temperature reading issue.
* stk3310
  - Support the stk3335, mostly ID.

Features and cleanups
* core
  - drop error handling on debugfs registration.
  - harden by making sure we don't overrun iio_chan_info_postfix.
* docs
  - convert remaining docs to rst. At somepoint we'll fit these few
    into the main IIO docs.
  - improve sampling_frequency_available docs but explaining the
    range form.
* ad_sigma_delta
  - Drop a pointless goto.
* ad2s1210
  - Drop pointless platform data null check seeing as we don't actually
    use platform data anymore.
* ad7124
  - Relax limitation on channel numbers to allow pseudo different channels.
  - Support control of whether the input is buffered via DT.
  - Use dynamic allocation for channel configuration to make it easier
    to support new devices.
  - YAML binding conversion.
* ad7150
  - Comment tidy up.
  - Consistent and simple if (ret) handling of i2c errors.
  - FIELD_GET and GENMASK.
  - Ternary rather than !!(condition) for readability.
  - Use macros to avoid repetition of channel definitions.
* ad7606
  - Add software channel config (rather that pin controlled)
  - Refactor to simplify addition of new part in future.
* ad7746
  - of_deivce_id table.
* ad7780
  - MAINTAINERS entry
  - YAML DT bindings.
* ad8366
  - Stop using core mlock in favour of well scoped local lock.
  - SPDX + copyright date update.
* ad9834
  - of_device_id table
* adf4371
  - Add support for output stage muting before lock on has occured.
* adis library
  - MAINTAINERS entry to reflect that this now Alexandru's problem ;)
* adis162xx:
  - Fix a slightly incorrect set of comments and print statements on
    minimum supported voltage.
* adis16203
  - of_device_id table.
* adis16240
  - Add of_device_id table (in two parts as first patch only used it for
    MODULE_DEVICE_TABLE.)
* adt7316-spi
  - of_device_id table
* adxl372
  - YAML DT binding conversion.
  - Cleanup use of buffer callback functions (precursor to core rework).
* bh1710
  - Simplify getting the i2c adapter from the client.
* dht11
  - Mote to newer GPIO consumer interface.
* kxcjk-1013.c
  - Add binding for sensor in display of some ultrabooks after userspace
    tools updated for it not be a problem to report two similar sensors.
* imx7d
  - drop unused variables.
  - white space
  - define instead of variable for clock frequency that is fixed.
  - drop pointless error message.
* messon_saradc
  - SPDX
* sps30
  - MAINTAINERS entry
  - YAML binding conversion.
* st_accel
  - Tidy up ordering in various buffer related callbacks. This is
    part of a long running effort to simplify the core code.
* stm32-dfsdm:
  - Manage the resolution cleanly in triggerd modes.
  - Add fast mode support which allows more flexible filter choices.
  - Add a comment on the reason for a 16 bit record when technically
    not 'required'.
* st_lsm6dsx
  - Embed device name in the sensor_settings struct as i3c doesn't
    have a convenient name field to use for this.
* xilinx-adc
  - Relax constraints on supported platforms to reflect that this
    can used with FPGAs on PCIe cards and hence many architectures.
* counters/ftm-quaddec
  - Fix some formatting io MODULE_AUTHOR
  - MAINTAINERS entry

Fixes
* tools
  - fix incorrect handling of 32 bit channels.
* sca3000
  - Potential endian bug that is unlikely to bite anyone (be64 host
    seems unlikely for this old part).
* stm32-adc
  - Add vdda-supply. On some boards it needs to be turned on to supply
    the ADC.  DT bindings included.
* stm32-dfsdm
  - Fix output resolution to work with filter orders other than 3.
  - Fix output datatype as it's signed and previously claimed not to be.

* tag 'iio-for-5.3b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (68 commits)
  iio: iio-utils: Fix possible incorrect mask calculation
  iio: frequency: adf4371: Add support for output stage mute
  dt-bindings: iio: frequency: Add ADF4372 PLL documentation
  iio: frequency: adf4371: Add support for ADF4372 PLL
  dt-bindings: iio: adc: Add buffered input property
  Convert AD7124 bindings documentation to YAML format.
  iio: adc: ad7124: Shift to dynamic allocation for channel configuration
  iio: adc: ad7124: Add buffered input support
  iio: adc: ad7124: Remove input number limitation
  MAINTAINERS: add ADIS IMU driver library entry
  iio: adis162xx: fix low-power docs & reports
  counter/ftm-quaddec: Add missing '>' in MODULE_AUTHOR
  iio: core: no need to check return value of debugfs_create functions
  docs: iio: convert to ReST
  iio: adc: stm32-adc: add missing vdda-supply
  dt-bindings: iio: adc: stm32: add missing vdda supply
  iio: adc: stm32-dfsdm: add comment for 16 bits record
  iio: adc: stm32-dfsdm: add fast mode support
  iio: adc: stm32-dfsdm: manage data resolution in trigger mode
  iio: adc: stm32-dfsdm: fix data type
  ...
This commit is contained in:
Greg Kroah-Hartman
2019-07-01 10:58:13 +02:00
parent 003e6cc3a2 208a68c839
commit c55cc97a25
58 changed files with 2706 additions and 468 deletions
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63
Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml Normal file
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/accelerometers/adi,adxl372.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices ADXL372 3-Axis, +/-(200g) Digital Accelerometer
maintainers:
- Stefan Popa <stefan.popa@analog.com>
description: |
Analog Devices ADXL372 3-Axis, +/-(200g) Digital Accelerometer that supports
both I2C & SPI interfaces
https://www.analog.com/en/products/adxl372.html
properties:
compatible:
enum:
- adi,adxl372
reg:
maxItems: 1
interrupts:
maxItems: 1
required:
- compatible
- reg
- interrupts
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c0 {
#address-cells = <1>;
#size-cells = <0>;
/* Example for a I2C device node */
accelerometer@53 {
compatible = "adi,adxl372";
reg = <0x53>;
interrupt-parent = <&gpio>;
interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
};
};
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
spi0 {
#address-cells = <1>;
#size-cells = <0>;
accelerometer@0 {
compatible = "adi,adxl372";
reg = <0>;
spi-max-frequency = <1000000>;
interrupt-parent = <&gpio>;
interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
};
};

33
Documentation/devicetree/bindings/iio/accel/adxl372.txt
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Analog Devices ADXL372 3-Axis, +/-(200g) Digital Accelerometer
http://www.analog.com/media/en/technical-documentation/data-sheets/adxl372.pdf
Required properties:
- compatible : should be "adi,adxl372"
- reg: the I2C address or SPI chip select number for the device
Required properties for SPI bus usage:
- spi-max-frequency: Max SPI frequency to use
Optional properties:
- interrupts: interrupt mapping for IRQ as documented in
Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
Example for a I2C device node:
accelerometer@53 {
compatible = "adi,adxl372";
reg = <0x53>;
interrupt-parent = <&gpio>;
interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
};
Example for a SPI device node:
accelerometer@0 {
compatible = "adi,adxl372";
reg = <0>;
spi-max-frequency = <1000000>;
interrupt-parent = <&gpio>;
interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
};

75
Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt
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Analog Devices AD7124 ADC device driver
Required properties for the AD7124:
- compatible: Must be one of "adi,ad7124-4" or "adi,ad7124-8"
- reg: SPI chip select number for the device
- spi-max-frequency: Max SPI frequency to use
see: Documentation/devicetree/bindings/spi/spi-bus.txt
- clocks: phandle to the master clock (mclk)
see: Documentation/devicetree/bindings/clock/clock-bindings.txt
- clock-names: Must be "mclk".
- interrupts: IRQ line for the ADC
see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
Required properties:
* #address-cells: Must be 1.
* #size-cells: Must be 0.
Subnode(s) represent the external channels which are connected to the ADC.
Each subnode represents one channel and has the following properties:
Required properties:
* reg: The channel number. It can have up to 4 channels on ad7124-4
and 8 channels on ad7124-8, numbered from 0 to 15.
* diff-channels: see: Documentation/devicetree/bindings/iio/adc/adc.txt
Optional properties:
* bipolar: see: Documentation/devicetree/bindings/iio/adc/adc.txt
* adi,reference-select: Select the reference source to use when
converting on the the specific channel. Valid values are:
0: REFIN1(+)/REFIN1(−).
1: REFIN2(+)/REFIN2(−).
3: AVDD
If this field is left empty, internal reference is selected.
Optional properties:
- refin1-supply: refin1 supply can be used as reference for conversion.
- refin2-supply: refin2 supply can be used as reference for conversion.
- avdd-supply: avdd supply can be used as reference for conversion.
Example:
adc@0 {
compatible = "adi,ad7124-4";
reg = <0>;
spi-max-frequency = <5000000>;
interrupts = <25 2>;
interrupt-parent = <&gpio>;
refin1-supply = <&adc_vref>;
clocks = <&ad7124_mclk>;
clock-names = "mclk";
#address-cells = <1>;
#size-cells = <0>;
channel@0 {
reg = <0>;
diff-channels = <0 1>;
adi,reference-select = <0>;
};
channel@1 {
reg = <1>;
bipolar;
diff-channels = <2 3>;
adi,reference-select = <0>;
};
channel@2 {
reg = <2>;
diff-channels = <4 5>;
};
channel@3 {
reg = <3>;
diff-channels = <6 7>;
};
};

155
Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2019 Analog Devices Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/bindings/iio/adc/adi,ad7124.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices AD7124 ADC device driver
maintainers:
- Stefan Popa <stefan.popa@analog.com>
description: |
Bindings for the Analog Devices AD7124 ADC device. Datasheet can be
found here:
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-8.pdf
properties:
compatible:
enum:
- adi,ad7124-4
- adi,ad7124-8
reg:
description: SPI chip select number for the device
maxItems: 1
clocks:
maxItems: 1
description: phandle to the master clock (mclk)
clock-names:
items:
- const: mclk
interrupts:
description: IRQ line for the ADC
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 0
refin1-supply:
description: refin1 supply can be used as reference for conversion.
maxItems: 1
refin2-supply:
description: refin2 supply can be used as reference for conversion.
maxItems: 1
avdd-supply:
description: avdd supply can be used as reference for conversion.
maxItems: 1
required:
- compatible
- reg
- clocks
- clock-names
- interrupts
patternProperties:
"^channel@([0-9]|1[0-5])$":
type: object
description: |
Represents the external channels which are connected to the ADC.
See Documentation/devicetree/bindings/iio/adc/adc.txt.
properties:
reg:
description: |
The channel number. It can have up to 8 channels on ad7124-4
and 16 channels on ad7124-8, numbered from 0 to 15.
items:
minimum: 0
maximum: 15
adi,reference-select:
description: |
Select the reference source to use when converting on
the specific channel. Valid values are:
0: REFIN1(+)/REFIN1(−).
1: REFIN2(+)/REFIN2(−).
3: AVDD
If this field is left empty, internal reference is selected.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [0, 1, 3]
diff-channels:
description: see Documentation/devicetree/bindings/iio/adc/adc.txt
items:
minimum: 0
maximum: 15
bipolar:
description: see Documentation/devicetree/bindings/iio/adc/adc.txt
type: boolean
adi,buffered-positive:
description: Enable buffered mode for positive input.
type: boolean
adi,buffered-negative:
description: Enable buffered mode for negative input.
type: boolean
required:
- reg
- diff-channels
examples:
- |
adc@0 {
compatible = "adi,ad7124-4";
reg = <0>;
spi-max-frequency = <5000000>;
interrupts = <25 2>;
interrupt-parent = <&gpio>;
refin1-supply = <&adc_vref>;
clocks = <&ad7124_mclk>;
clock-names = "mclk";
#address-cells = <1>;
#size-cells = <0>;
channel@0 {
reg = <0>;
diff-channels = <0 1>;
adi,reference-select = <0>;
adi,buffered-positive;
};
channel@1 {
reg = <1>;
bipolar;
diff-channels = <2 3>;
adi,reference-select = <0>;
adi,buffered-positive;
adi,buffered-negative;
};
channel@2 {
reg = <2>;
diff-channels = <4 5>;
};
channel@3 {
reg = <3>;
diff-channels = <6 7>;
};
};

48
Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt
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* Analog Devices AD7170/AD7171/AD7780/AD7781
Data sheets:
- AD7170:
* https://www.analog.com/media/en/technical-documentation/data-sheets/AD7170.pdf
- AD7171:
* https://www.analog.com/media/en/technical-documentation/data-sheets/AD7171.pdf
- AD7780:
* https://www.analog.com/media/en/technical-documentation/data-sheets/ad7780.pdf
- AD7781:
* https://www.analog.com/media/en/technical-documentation/data-sheets/AD7781.pdf
Required properties:
- compatible: should be one of
* "adi,ad7170"
* "adi,ad7171"
* "adi,ad7780"
* "adi,ad7781"
- reg: spi chip select number for the device
- vref-supply: the regulator supply for the ADC reference voltage
Optional properties:
- powerdown-gpios: must be the device tree identifier of the PDRST pin. If
specified, it will be asserted during driver probe. As the
line is active high, it should be marked GPIO_ACTIVE_HIGH.
- adi,gain-gpios: must be the device tree identifier of the GAIN pin. Only for
the ad778x chips. If specified, it will be asserted during
driver probe. As the line is active low, it should be marked
GPIO_ACTIVE_LOW.
- adi,filter-gpios: must be the device tree identifier of the FILTER pin. Only
for the ad778x chips. If specified, it will be asserted
during driver probe. As the line is active low, it should be
marked GPIO_ACTIVE_LOW.
Example:
adc@0 {
compatible = "adi,ad7780";
reg = <0>;
vref-supply = <&vdd_supply>
powerdown-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
adi,gain-gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
adi,filter-gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
};

87
Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml Normal file
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/adc/adi,ad7780.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices AD7170/AD7171/AD7780/AD7781 analog to digital converters
maintainers:
- Michael Hennerich <michael.hennerich@analog.com>
description: |
The ad7780 is a sigma-delta analog to digital converter. This driver provides
reading voltage values and status bits from both the ad778x and ad717x series.
Its interface also allows writing on the FILTER and GAIN GPIO pins on the
ad778x.
Specifications on the converters can be found at:
AD7170:
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7170.pdf
AD7171:
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7171.pdf
AD7780:
https://www.analog.com/media/en/technical-documentation/data-sheets/ad7780.pdf
AD7781:
https://www.analog.com/media/en/technical-documentation/data-sheets/AD7781.pdf
properties:
compatible:
enum:
- adi,ad7170
- adi,ad7171
- adi,ad7780
- adi,ad7781
reg:
maxItems: 1
avdd-supply:
description:
The regulator supply for the ADC reference voltage.
maxItems: 1
powerdown-gpios:
description:
Must be the device tree identifier of the PDRST pin. If
specified, it will be asserted during driver probe. As the
line is active high, it should be marked GPIO_ACTIVE_HIGH.
maxItems: 1
adi,gain-gpios:
description:
Must be the device tree identifier of the GAIN pin. Only for
the ad778x chips. If specified, it will be asserted during
driver probe. As the line is active low, it should be marked
GPIO_ACTIVE_LOW.
maxItems: 1
adi,filter-gpios:
description:
Must be the device tree identifier of the FILTER pin. Only
for the ad778x chips. If specified, it will be asserted
during driver probe. As the line is active low, it should be
marked GPIO_ACTIVE_LOW.
maxItems: 1
required:
- compatible
- reg
examples:
- |
#include <dt-bindings/gpio/gpio.h>
spi0 {
#address-cells = <1>;
#size-cells = <0>;
adc@0 {
compatible = "adi,ad7780";
reg = <0>;
avdd-supply = <&vdd_supply>;
powerdown-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
adi,gain-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>;
adi,filter-gpios = <&gpio2 15 GPIO_ACTIVE_LOW>;
};
};

1
Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
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@@ -38,6 +38,7 @@ Required properties:
It's required on stm32h7.
- clock-names: Must be "adc" and/or "bus" depending on part used.
- interrupt-controller: Identifies the controller node as interrupt-parent
- vdda-supply: Phandle to the vdda input analog voltage.
- vref-supply: Phandle to the vref input analog reference voltage.
- #interrupt-cells = <1>;
- #address-cells = <1>;

12
Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.txt
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* Sensirion SPS30 particulate matter sensor
Required properties:
- compatible: must be "sensirion,sps30"
- reg: the I2C address of the sensor
Example:
sps30@69 {
compatible = "sensirion,sps30";
reg = <0x69>;
};

39
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/chemical/sensirion,sps30.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Sensirion SPS30 particulate matter sensor
maintainers:
- Tomasz Duszynski <tduszyns@gmail.com>
description: |
Air pollution sensor capable of measuring mass concentration of dust
particles.
properties:
compatible:
enum:
- sensirion,sps30
reg:
maxItems: 1
required:
- compatible
- reg
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
air-pollution-sensor@69 {
compatible = "sensirion,sps30";
reg = <0x69>;
};
};
...

63
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/frequency/adf4371.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices ADF4371/ADF4372 Wideband Synthesizers
maintainers:
- Popa Stefan <stefan.popa@analog.com>
description: |
Analog Devices ADF4371/ADF4372 SPI Wideband Synthesizers
https://www.analog.com/media/en/technical-documentation/data-sheets/adf4371.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/adf4372.pdf
properties:
compatible:
enum:
- adi,adf4371
- adi,adf4372
reg:
maxItems: 1
clocks:
description:
Definition of the external clock (see clock/clock-bindings.txt)
maxItems: 1
clock-names:
description:
Must be "clkin"
maxItems: 1
adi,mute-till-lock-en:
type: boolean
description:
If this property is present, then the supply current to RF8P and RF8N
output stage will shut down until the ADF4371/ADF4372 achieves lock as
measured by the digital lock detect circuitry.
required:
- compatible
- reg
- clocks
- clock-names
examples:
- |
spi0 {
#address-cells = <1>;
#size-cells = <0>;
frequency@0 {
compatible = "adi,adf4371";
reg = <0>;
spi-max-frequency = <1000000>;
clocks = <&adf4371_clkin>;
clock-names = "clkin";
};
};
...