Merge tag 'iio-for-6.1a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

1st set of IIO new device support, features and cleanup for 6.1

This includes Nuno Sa's work to move the IIO core over to generic firmware
properties rather than having DT specific code paths. Combined with Andy
Shevchenko's long term work on drivers, this leaves IIO in a good state for
handling other firmware types.

New device support
- liteon,ltrf216a
* New driver and dt bindings to support this Light sensor.
- maxim,max11205
* New driver for this 16bit single channel ADC.
- memsensing,msa311
* New driver for this accelerometer. Includes a string helper for read/write.
- richtek,rtq6056
* New driver and dt binding to support this current monitor used to measure
power usage.
- yamaha,yas530
* Support the YAS537 variant (series includes several fixes for other parts
and new driver features).

Staging graduation
- adi,ad7746 CDC. Cleanup conducted against set of roadtest tests using
the posted RFC of that framework.

Features
- core
* Large rework to make all the core IIO code use generic firmware properties.
Includes switching some drivers over as well using newly provided
generic interfaces and allowing removal of DT specific ones.
* Support for gesture event types for single and double tap. Used in
bosch,bma400.
- atmel,at91-sama5d2
* Add support for temperature sensor which uses two muxed inputs to estimate
the temperature.
* Handle trackx bits of EMR register to improve temp sampling accuracy.
* Runtime PM support.
- liteon,ltrf216a
* Add a _raw channel output to allow working around an issue with
differing conversions equations that breaks some user space controls.
- mexelis,mlx90632
* Support regulator control.
- ti,tsc2046
* External reference voltage support.

Clean up and minor fixes
- Tree-wide
* devm_clk_get_enabled() replacements of opencoded equivalent.
* Remaining IIO_DMA_MINALIGN conversions (the staging/iio drivers).
* Various minor warning and similar cleanup such as missing static
markings.
* strlcpy() to strscpy() for cases where return value not checked.
* provide units.h entries for more HZ units and use them in drivers.
- dt-bindings cleanup
* Drop maintainers listss where the email address is bouncing.
* Switch spi devices over to using spi-peripheral.yaml
* Add some missing unevaluatedProperties / additionalProperties: false
entries.
- ABI docs
* Add some missing channel type specific sampling frequency entries.
* Add parameter names for callback parameters.
- MAINTAINERS
* Fix wrong ADI forum links.
- core
* lockdep class per device, to avoid an issue with nest when one IIO
device is the consumer of another.
* White space tweaks.
- asc,dlhl60d
* Use get_unaligned_be24 to avoid some unusual data manipulation and masking.
- atmel,at91-sama5d2
* Fix wrong max value.
* Improve error handling when measuring pressure and touch.
* Add locks to remove races on updating oversampling / sampling freq.
* Add missing calls in suspend and resume path to ensure state is correctly
brought up if buffered capture was in use when suspend happened.
* Error out of write_raw() callback if buffered capture enabled to avoid
unpredictable behavior.
* Handle different versions having different oversampling ratio support and
drop excess error checking.
* Cleanup magic value defines where the name is just the value and hence
hurts readability.
* Use read_avail() callback to provide info on possible oversampling ratios.
* Correctly handle variable bit depth when doing oversampling on different
supported parts. Also handle higher oversampling ratios.
- fsl,imx8qxp
* Don't ignore errors from regulator_get_voltage() so as to avoid some
very surprising scaling.
- invensense,icp10100
* Switch from UNIVERSAL to DEFINE_RUNTIME_DEV_PM_OPS. UNIVERSAL rarely made
sense and is now deprecated. In this driver we just avoid double disabling
in some paths.
- maxim,max1363
* Drop consumer channel map provision by platform data. There have been
better ways of doing this for years and there are no in tree users.
- microchip,mcp3911
* Update status to maintained.
- qcom,spmi-adc5
* Support measurement of LDO output voltage.
- qcom,spmi-adc
* Add missing channel available on SM6125 SoC.
- st,stmpe
* Drop requirement on node name in binding now that driver correctly
doesn't enforce it.
- stx104
* Move to more appropriate addac directory
- ti,am335x
* Document ti,am654-adc compatible already in use in tree.
- ti,hmc5843
* Move dev_pm_ops out of header and use new pm macros to handle export.
- yamaha,yas530
* Minor cleanups.

* tag 'iio-for-6.1a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (142 commits)
iio: pressure: icp10100: Switch from UNIVERSAL to DEFINE_RUNTIME_DEV_PM_OPS().
iio: adc: max1363: Drop provision to provide an IIO channel map via platform data
iio: accel: bma400: Add support for single and double tap events
iio: Add new event type gesture and use direction for single and double tap
iio: Use per-device lockdep class for mlock
iio: adc: add max11205 adc driver
dt-bindings: iio: adc: Add max11205 documentation file
iio: magnetometer: yamaha-yas530: Use dev_err_probe()
iio: magnetometer: yamaha-yas530: Make strings const in chip info
iio: magnetometer: yamaha-yas530: Use pointers as driver data
iio: adc: tsc2046: silent spi_device_id warning
iio: adc: tsc2046: add vref support
dt-bindings: iio: adc: ti,tsc2046: add vref-supply property
iio: light: ltrf216a: Add raw attribute
dt-bindings: iio: Add missing (unevaluated|additional)Properties on child nodes
MAINTAINERS: fix Analog Devices forum links
iio/accel: fix repeated words in comments
dt-bindings: iio: accel: add dt-binding schema for msa311 accel driver
iio: add MEMSensing MSA311 3-axis accelerometer driver
dt-bindings: vendor-prefixes: add MEMSensing Microsystems Co., Ltd.
...

Documentation/ABI/testing/sysfs-bus-iio

···
 		Raw capacitance measurement from channel Y. Units after
 		application of scale and offset are nanofarads.
 
-What:		/sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
+What:		/sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_raw
 KernelVersion:	3.2
 Contact:	[e-mail]
 Description:
···
 		separately available. In differential only parts, then all that
 		is required is a consistent labeling.  Units after application
 		of scale and offset are nanofarads.
+
+What:		/sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_zeropoint
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		For differential channels, this an offset that is applied
+		equally to both inputs. As the reading is of the difference
+		between the two inputs, this should not be applied to the _raw
+		reading by userspace (unlike _offset) and unlike calibbias
+		it does not affect the differential value measured because
+		the effect of _zeropoint cancels out across the two inputs
+		that make up the differential pair. It's purpose is to bring
+		the individual signals, before the differential is measured,
+		within the measurement range of the device. The naming is
+		chosen because if the separate inputs that make the
+		differential pair are drawn on a graph in their
+		_raw  units, this is the value that the zero point on the
+		measurement axis represents. It is expressed with the
+		same scaling as _raw.
 
 What:		/sys/bus/iio/devices/iio:deviceX/in_temp_raw
 What:		/sys/bus/iio/devices/iio:deviceX/in_tempX_raw
···
 		Available range for the forced calibration value, expressed as:
 
 		- a range specified as "[min step max]"
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_voltageX_sampling_frequency
+What:		/sys/bus/iio/devices/iio:deviceX/in_powerY_sampling_frequency
+What:		/sys/bus/iio/devices/iio:deviceX/in_currentZ_sampling_frequency
+KernelVersion:	5.20
+Contact:	[e-mail]
+Description:
+		Some devices have separate controls of sampling frequency for
+		individual channels. If multiple channels are enabled in a scan,
+		then the sampling_frequency of the scan may be computed from the
+		per channel sampling frequencies.
+
+What:		/sys/.../events/in_accel_gesture_singletap_en
+What:		/sys/.../events/in_accel_gesture_doubletap_en
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Device generates an event on a single or double tap.
+
+What:		/sys/.../events/in_accel_gesture_singletap_value
+What:		/sys/.../events/in_accel_gesture_doubletap_value
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Specifies the threshold value that the device is comparing
+		against to generate the tap gesture event. The lower
+		threshold value increases the sensitivity of tap detection.
+		Units and the exact meaning of value are device-specific.
+
+What:		/sys/.../events/in_accel_gesture_tap_value_available
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Lists all available threshold values which can be used to
+		modify the sensitivity of the tap detection.
+
+What:		/sys/.../events/in_accel_gesture_singletap_reset_timeout
+What:		/sys/.../events/in_accel_gesture_doubletap_reset_timeout
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Specifies the timeout value in seconds for the tap detector
+		to not to look for another tap event after the event as
+		occurred. Basically the minimum quiet time between the two
+		single-tap's or two double-tap's.
+
+What:		/sys/.../events/in_accel_gesture_tap_reset_timeout_available
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Lists all available tap reset timeout values. Units in seconds.
+
+What:		/sys/.../events/in_accel_gesture_doubletap_tap2_min_delay
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Specifies the minimum quiet time in seconds between the two
+		taps of a double tap.
+
+What:		/sys/.../events/in_accel_gesture_doubletap_tap2_min_delay_available
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Lists all available delay values between two taps in the double
+		tap. Units in seconds.
+
+What:		/sys/.../events/in_accel_gesture_tap_maxtomin_time
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Specifies the maximum time difference allowed between upper
+		and lower peak of tap to consider it as the valid tap event.
+		Units in seconds.
+
+What:		/sys/.../events/in_accel_gesture_tap_maxtomin_time_available
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Lists all available time values between upper peak to lower
+		peak. Units in seconds.

Documentation/ABI/testing/sysfs-bus-iio-cdc-ad7746

···
+What:		/sys/.../iio:deviceX/in_capacitableY_calibbias_calibration
+What:		/sys/.../iio:deviceX/in_capacitableY_calibscale_calibration
+KernelVersion:	6.1
+Contact:	[e-mail]
+Description:
+		Write 1 to trigger a calibration of the calibbias or
+		calibscale. For calibscale, a full scale capacitance should
+		be connected to the capacitance input and a
+		calibscale_calibration then started.  For calibbias see
+		the device datasheet section on "capacitive system offset
+		calibration".

Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml

···
   interrupts:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vdd-supply: true
 
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/adi,adis16240.yaml

···
   interrupts:
     maxItems: 1
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
   - interrupts
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/adi,adxl313.yaml

···
 
   spi-3wire: true
 
-  spi-max-frequency: true
-
   vs-supply:
     description: Regulator that supplies power to the accelerometer
 
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml

···
 
   spi-cpol: true
 
-  spi-max-frequency: true
-
   interrupts:
     maxItems: 1
 
···
   - reg
   - interrupts
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/adi,adxl355.yaml

···
   vddio-supply:
     description: Regulator that provides power to the bus
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/adi,adxl367.yaml

···
   interrupts:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vdd-supply: true
   vddio-supply: true
 
···
   - reg
   - interrupts
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml

···
   interrupts:
     maxItems: 1
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
   - interrupts
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/bosch,bma220.yaml

···
   interrupts:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vdda-supply: true
   vddd-supply: true
   vddio-supply: true
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml

···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/bosch,bmi088.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vdd-supply: true
 
   vddio-supply: true
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/fsl,mma7455.yaml

···
         - "INT1"
         - "INT2"
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/kionix,kxsd9.yaml

···
   mount-matrix:
     description: an optional 3x3 mounting rotation matrix.
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml

···
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/iio/accel/memsensing,msa311.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MEMSensing digital 3-Axis accelerometer
+
+maintainers:
+  - Dmitry Rokosov <[e-mail]>
+
+description: |
+  MSA311 is a tri-axial, low-g accelerometer with I2C digital output for
+  sensitivity consumer applications. It has dynamical user selectable full
+  scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements
+  with output data rates from 1Hz to 1000Hz.
+  Datasheet can be found at following URL
+  https://cdn-shop.adafruit.com/product-files/5309/MSA311-V1.1-ENG.pdf
+
+properties:
+  compatible:
+    const: memsensing,msa311
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vdd-supply: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        accelerometer@62 {
+            compatible = "memsensing,msa311";
+            reg = <0x62>;
+            interrupt-parent = <&gpio_intc>;
+            interrupts = <29 IRQ_TYPE_EDGE_RISING>;
+            vdd-supply = <&vcc_5v>;
+        };
+    };

Documentation/devicetree/bindings/iio/accel/murata,sca3300.yaml

···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/accel/nxp,fxls8962af.yaml

···
   vdd-supply:
     description: phandle to the regulator that provides power to the accelerometer
 
-  spi-max-frequency: true
-
   interrupts:
     maxItems: 1
 
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml

···
   avdd-supply:
     description: avdd supply can be used as reference for conversion.
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
···
 
     additionalProperties: false
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml

···
 
   spi-cpha: true
 
-  spi-max-frequency: true
-
   clocks:
     maxItems: 1
     description: phandle to the master clock (mclk)
···
   - spi-cpol
   - spi-cpha
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml

···
     description: IRQ line for the ADC
     maxItems: 1
 
-  spi-max-frequency: true
-
   adi,voltage-alert-last-chan:
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml

···
 
   spi-cpha: true
 
-  spi-max-frequency: true
-
   '#address-cells':
     const: 1
 
···
 
     additionalProperties: true
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7298.yaml

···
 
   vref-supply: true
   vdd-supply: true
-  spi-max-frequency: true
 
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml

···
       to the other supplies. Needed to be able to establish channel scaling
       unless there is also an internal reference available (e.g. ad7091r)
 
-  spi-max-frequency: true
-
   adi,conversion-start-gpios:
     description: A GPIO used to trigger the start of a conversion
     maxItems: 1
···
   - compatible
   - reg
 
-additionalProperties: false
-
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
   # Devices where reference is vcc
   - if:
       properties:
···
     else:
       properties:
         adi,conversion-start-gpios: false
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml

···
 
   spi-cpol: true
 
-  spi-max-frequency: true
-
   avcc-supply: true
 
   interrupts:
···
   - interrupts
   - adi,conversion-start-gpios
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml

···
   reset-gpios:
     maxItems: 1
 
-  spi-max-frequency: true
-
   spi-cpol: true
 
   spi-cpha: true
···
       - reg
     additionalProperties: false
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7923.yaml

···
 
 maintainers:
   - Michael Hennerich <[e-mail]>
-  - Patrick Vasseur <[e-mail]>
 
 description: |
   Analog Devices AD7904, AD7914, AD7923, AD7924 4 Channel ADCs, and AD7908,
···
   '#size-cells':
     const: 0
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/adi,ad7949.yaml

···
     default: 4096000
 
 
-  spi-max-frequency: true
-
   '#io-channel-cells':
     const: 1
 
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/holt,hi8435.yaml

···
       GPIO used for controlling the reset pin
     maxItems: 1
 
-  spi-max-frequency: true
-
   "#io-channel-cells":
     const: 1
 
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/lltc,ltc2496.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency:
-    description: maximal spi bus frequency supported
-
 required:
   - compatible
   - vref-supply
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/maxim,max1027.yaml

···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/maxim,max11100.yaml

···
     minimum: 100000
     maximum: 4800000
 
-additionalProperties: false
-
 required:
   - compatible
   - reg
   - vref-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/maxim,max1118.yaml

···
   vref-supply:
     description: External reference, needed to establish input scaling
 
-if:
-  properties:
-    compatible:
-      contains:
-        const: maxim,max1118
-then:
-  required:
-    - vref-supply
-else:
-  properties:
-    vref-supply: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: maxim,max1118
+    then:
+      required:
+        - vref-supply
+    else:
+      properties:
+        vref-supply: false
 
 required:
   - compatible
   - reg
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/maxim,max11205.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX11205 ADC
+
+maintainers:
+  - Ramona Bolboaca <[e-mail]>
+
+description: |
+  The MAX11205 is an ultra-low-power (< 300FA max active current),
+  high-resolution, serial-output ADC.
+
+  https://datasheets.maximintegrated.com/en/ds/MAX11205.pdf
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - maxim,max11205a
+      - maxim,max11205b
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 5000000
+
+  spi-cpha: true
+
+  vref-supply:
+    description:
+      The regulator supply for the ADC reference voltage. This is a differential
+      reference. It is equal to the V_REFP - V_REFN. The maximum value is 3.6V.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - spi-max-frequency
+  - spi-cpha
+  - vref-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        adc@0 {
+            compatible = "maxim,max11205a";
+            reg = <0>;
+            spi-max-frequency = <5000000>;
+            spi-cpha;
+            interrupt-parent = <&gpio>;
+            interrupts = <19 IRQ_TYPE_EDGE_FALLING>;
+            vref-supply = <&max11205_vref>;
+        };
+    };
+...

Documentation/devicetree/bindings/iio/adc/maxim,max1241.yaml

···
       thus enabling power-down mode.
     maxItems: 1
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
   - vdd-supply
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
   spi-cpha: true
   spi-cpol: true
 
···
   - reg
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml

···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.yaml

···
 patternProperties:
   "^.*@[0-9a-f]+$":
     type: object
+    additionalProperties: false
     description: |
       Represents the external channels which are connected to the ADC.
       For compatible property "qcom,spmi-vadc" following channels, also known as

Documentation/devicetree/bindings/iio/adc/richtek,rtq6056.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/richtek,rtq6056.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RTQ6056 Bi-Directional Current and Power Monitor with 16-bit ADC
+
+maintainers:
+  - ChiYuan Huang <[e-mail]>
+
+description: |
+  The RTQ6056 is a high accuracy current-sense monitor with I2C and SMBus
+  interface, and the device provides full information for system by reading
+  out the loading current and power.
+
+  The device monitors both of the drops across sense resistor and the BUS
+  voltage, converts into the current in amperes, and power in watts through
+  internal analog-to-digital converter ADC. The programmable calibration,
+  adjustable conversion time, and averaging function are also built in for
+  more design flexibility.
+
+  Datasheet is available at
+  https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
+
+properties:
+  compatible:
+    const: richtek,rtq6056
+
+  reg:
+    maxItems: 1
+
+  "#io-channel-cells":
+    const: 1
+
+  shunt-resistor-micro-ohms:
+    description: Shunt IN+/IN- sensing node resistor
+
+required:
+  - compatible
+  - reg
+  - "#io-channel-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      adc@40 {
+        compatible = "richtek,rtq6056";
+        reg = <0x40>;
+        #io-channel-cells = <1>;
+      };
+    };

Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml

···
 patternProperties:
   "^filter@[0-9]+$":
     type: object
+    unevaluatedProperties: false
     description: child node
 
     properties:
···
           patternProperties:
             "^dfsdm-dai+$":
               type: object
+              additionalProperties: false
               description: child node
 
               properties:

Documentation/devicetree/bindings/iio/adc/st,stmpe-adc.yaml

···
   This ADC forms part of an ST microelectronics STMPE multifunction device .
   The ADC is shared with the STMPE touchscreen. As a result some ADC related
   settings are specified in the parent node.
-  The node name myst be stmpe_adc and should be a child node of the stmpe node
-  to which it belongs.
+  The node should be a child node of the stmpe node to which it belongs.
 
 properties:
   compatible:

Documentation/devicetree/bindings/iio/adc/ti,adc0832.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply:
     description: External reference, needed to establish input scaling
 
···
   - reg
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply:
     description: External reference, needed to establish input scaling
 
···
   - spi-cpol
   - spi-cpha
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,adc108s102.yaml

···
 
   reg: true
   vref-supply: true
-  spi-max-frequency: true
   "#io-channel-cells":
     const: 1
 
···
   - reg
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,adc12138.yaml

···
     maxItems: 1
     description: Conversion clock input.
 
-  spi-max-frequency: true
-
   vref-p-supply:
     description: The regulator supply for positive analog voltage reference
 
···
   - clocks
   - vref-p-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,adc128s052.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply: true
 
   "#io-channel-cells":
···
   - reg
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,adc161s626.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vdda-supply: true
 
   "#io-channel-cells":
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,ads1015.yaml

···
 patternProperties:
   "^channel@[0-7]+$":
     type: object
+    additionalProperties: false
     description:
       Child nodes needed for each channel that the platform uses.
 

Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   spi-cpha: true
 
   reset-gpios:
···
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml

···
 title: Texas Instruments ADS131E0x 4-, 6- and 8-Channel ADCs
 
 maintainers:
-  - Tomislav Denis <[e-mail]>
+  - Jonathan Cameron <[e-mail]>
 
 description: |
   The ADS131E0x are a family of multichannel, simultaneous sampling,
···
 
   reg:
     maxItems: 1
-
-  spi-max-frequency: true
 
   spi-cpha: true
 
···
 
     additionalProperties: false
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,ads8344.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply:
     description: Supply the 2.5V or 5V reference voltage
 
···
   - reg
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,ads8688.yaml

···
     description: Optional external reference.  If not supplied, assume
       REFSEL input tied low to enable the internal reference.
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,am3359-adc.yaml

···
 
 properties:
   compatible:
-    enum:
-      - ti,am3359-adc
-      - ti,am4372-adc
+    oneOf:
+      - enum:
+          - ti,am3359-adc
+          - ti,am4372-adc
+      - items:
+          - enum:
+              - ti,am654-adc
+          - const: ti,am3359-adc
 
   '#io-channel-cells':
     const: 1

Documentation/devicetree/bindings/iio/adc/ti,tlc4541.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply: true
 
   "#io-channel-cells":
···
   - reg
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml

···
   interrupts:
     maxItems: 1
 
-  spi-max-frequency: true
+  vref-supply:
+    description: Optional supply of the reference voltage
 
   "#io-channel-cells":
     const: 1
···
 
     additionalProperties: false
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml

···
 
   ams-pl@400:
     type: object
+    additionalProperties: false
     description:
       PL-SYSMON is capable of monitoring off chip voltage and temperature.
       PL-SYSMON block has DRP, JTAG and I2C interface to enable monitoring

Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml

···
 patternProperties:
   "^channel@[0-3]$":
     type: object
+    additionalProperties: false
     description: Represents the external channels which are connected to the device.
 
     properties:

Documentation/devicetree/bindings/iio/amplifiers/adi,ada4250.yaml

···
       Enable internal buffer to drive the reference pin.
     type: boolean
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
   - avdd-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml

···
 
       custom-output-range-config:
         type: object
+        additionalProperties: false
         description: Configuration of custom range when
           adi,output-range-microvolt is not present.
           The formulas for calculation the output voltages are

Documentation/devicetree/bindings/iio/dac/adi,ad5064.yaml

···
   vrefD-supply: true
   vref-supply: true
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - # Shared external vref, no internal reference
     if:
       properties:
···
       required:
         - vrefA-supply
         - vrefB-supply
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5360.yaml

···
   vref1-supply: true
   vref2-supply: true
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
···
   - vref1-supply
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       properties:
         compatible:
···
     then:
       required:
         - vref2-supply
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5380.yaml

···
     description:
       If not supplied devices will use internal regulators.
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5421.yaml

···
     maxItems: 1
     description: Fault signal.
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5449.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   VREF-supply: true
   VREFA-supply: true
   VREFB-supply: true
-
-additionalProperties: false
 
 required:
   - compatible
   - reg
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       properties:
         compatible:
···
       required:
         - VREFA-supply
         - VREFB-supply
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5624r.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply:
     description: If not present, internal reference will be used.
-
-additionalProperties: false
 
 required:
   - compatible
   - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5686.yaml

···
   vcc-supply:
     description: If not supplied the internal reference is used.
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml

···
     description: Either this or spi-cpol but not both.
   spi-cpol: true
 
-  spi-max-frequency: true
-
   adi,ext-dc-dc-compenstation-resistor:
     $ref: /schemas/types.yaml#/definitions/flag
     description:
···
 required:
   - compatible
   - reg
-
-additionalProperties: false
 
 patternProperties:
   "^channel@[0-7]$":
···
       - spi-cpha
   - required:
       - spi-cpol
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
   spi-cpha: true
 
   adi,dc-dc-mode:
···
   - adi,dc-dc-mode
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       properties:
         adi,dc-dc-mode:
···
       required:
         - adi,range-microvolt
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5761.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply:
     description: If not supplied, internal reference will be used.
-
-additionalProperties: false
 
 required:
   - compatible
   - reg
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       properties:
         compatible:
···
     then:
       required:
         - vref-supply
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5764.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vrefAB-supply: true
   vrefCD-supply: true
-
-additionalProperties: false
 
 required:
   - compatible
   - reg
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       properties:
         compatible:
···
       required:
         - vrefAB-supply
         - vrefCD-supply
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml

···
       asserted during driver probe.
     maxItems: 1
 
-  spi-max-frequency: true
-
   '#address-cells':
     const: 1
 
···
       connected to the DAC. Channel 0 can act both as a current
       source and sink.
     type: object
+    additionalProperties: false
 
     properties:
       reg:
···
     description: Represents an external channel which are
       connected to the DAC.
     type: object
+    additionalProperties: false
 
     properties:
       reg:
···
     description: Represents an external channel which are
       connected to the DAC.
     type: object
+    additionalProperties: false
 
     properties:
       reg:
···
 patternProperties:
   "^channel@([3-5])$":
     type: object
+    additionalProperties: false
     description: Represents the external channels which are connected to the DAC.
     properties:
       reg:
···
   - channel@4
   - channel@5
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad5791.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vdd-supply: true
   vss-supply: true
-
-additionalProperties: false
 
 required:
   - compatible
   - reg
   - vdd-supply
   - vss-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ad8801.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vrefh-supply: true
   vrefl-supply: true
-
-additionalProperties: false
 
 required:
   - compatible
···
   - vrefh-supply
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       properties:
         compatible:
···
     else:
       properties:
         vrefl-supply: false
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml

···
 patternProperties:
   "^channel@([0-9]|1[0-5])$":
     type: object
+    additionalProperties: false
 
     properties:
       reg:

Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vref-supply: true
-
-additionalProperties: false
 
 required:
   - compatible
   - reg
   - vref-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml

···
   vref-supply:
     description: Needed to provide output scaling.
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
   - vref-supply
-
-additionalProperties: false
 
 oneOf:
   - required:
       - spi-cpha
   - required:
       - spi-cpol
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/ti,dac7311.yaml

···
       Reference voltage must be supplied to establish the scaling of the
       output voltage.
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
   - vref-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml

···
       DACs are loaded when the pin connected to this GPIO is pulled low.
     maxItems: 1
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/frequency/adf4371.yaml

···
       output stage will shut down until the ADF4371/ADF4372 achieves lock as
       measured by the digital lock detect circuitry.
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
   - clocks
   - clock-names
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/health/ti,afe4403.yaml

···
 
   reset-gpios: true
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml

···
 
   spi-cpol: true
 
-  spi-max-frequency: true
-
   interrupts:
     maxItems: 1
 
···
   - reg
   - interrupts
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml

···
         - DIO3
         - DIO4
 
-  spi-max-frequency: true
-
   spi-cpha: true
   spi-cpol: true
 
···
       - DIO3
       - DIO4
 
-additionalProperties: false
-
 required:
   - compatible
   - reg
···
   - spi-cpha
   - spi-cpol
   - spi-max-frequency
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/imu/bosch,bmi160.yaml

···
   mount-matrix:
     description: an optional 3x3 mounting rotation matrix
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml

···
   vddio-supply:
     description: Regulator that provides power to the bus
 
-  spi-max-frequency: true
   spi-cpha: true
   spi-cpol: true
 
···
   - reg
   - interrupts
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml

···
   interrupts:
     maxItems: 1
 
-  spi-max-frequency: true
-
   vdd-supply: true
   vddio-supply: true
 
···
       These devices also support an auxiliary i2c bus via an i2c-gate.
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       not:
         properties:
···
       properties:
         i2c-gate: false
 
-additionalProperties: false
+unevaluatedProperties: false
 
 required:
   - compatible

Documentation/devicetree/bindings/iio/imu/nxp,fxos8700.yaml

···
   drive-open-drain:
     type: boolean
 
-  spi-max-frequency: true
-
 required:
   - compatible
   - reg
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml

···
     description:
       Supports up to 2 interrupt lines via the INT1 and INT2 pins.
 
-  spi-max-frequency: true
-
   vdd-supply:
     description: if defined provides VDD power to the sensor.
 
···
   wakeup-source:
     $ref: /schemas/types.yaml#/definitions/flag
 
-additionalProperties: false
-
 required:
   - compatible
   - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/light/liteon,ltrf216a.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/light/liteon,ltrf216a.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LTRF216A Ambient Light Sensor
+
+maintainers:
+  - Shreeya Patel <[e-mail]>
+
+description:
+  Ambient light sensing with an i2c interface.
+
+properties:
+  compatible:
+    const: liteon,ltrf216a
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vdd-supply:
+    description: Regulator that provides power to the sensor.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        light-sensor@53 {
+            compatible = "liteon,ltrf216a";
+            reg = <0x53>;
+            vdd-supply = <&vdd_regulator>;
+            interrupt-parent = <&gpio0>;
+            interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+        };
+    };

Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp41010.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4131.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml

···
 title: All Sensors DLH series low voltage digital pressure sensors
 
 maintainers:
-  - Tomislav Denis <[e-mail]>
+  - Jonathan Cameron <[e-mail]>
 
 description: |
   Bindings for the All Sensors DLH series pressure sensors.

Documentation/devicetree/bindings/iio/samsung,sensorhub-rinato.yaml

···
     description:
       Reset the sensorhub.
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - compatible
   - reg
···
   - ap-mcu-gpios
   - mcu-ap-gpios
   - mcu-reset-gpios
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
   spi-cpha: true
 
 required:
···
   - reg
 
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - if:
       properties:
         compatible:
···
       properties:
         spi-cpha: false
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml

···
   reg:
     maxItems: 1
 
-  spi-max-frequency: true
   spi-cpha: true
 
   thermocouple-type:
···
   - reg
   - spi-cpha
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml

···
       enables 3-wire RTD connection. Else 2-wire or 4-wire RTD connection.
     type: boolean
 
-  spi-max-frequency: true
   spi-cpha: true
 
 required:
···
   - reg
   - spi-cpha
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |

Documentation/devicetree/bindings/iio/temperature/melexis,mlx90632.yaml

···
     maxItems: 1
     description: Default is 0x3a, but can be reprogrammed.
 
+  vdd-supply:
+    description: provide VDD power to the sensor.
+
 required:
   - compatible
   - reg
···
         temp-sensor@3a {
             compatible = "melexis,mlx90632";
             reg = <0x3a>;
+            vdd-supply = <&ldo4_reg>;
         };
     };
 ...

Documentation/devicetree/bindings/vendor-prefixes.yaml

···
     description: MELFAS Inc.
   "^mellanox,.*":
     description: Mellanox Technologies
+  "^memsensing,.*":
+    description: MEMSensing Microsystems Co., Ltd.
   "^memsic,.*":
     description: MEMSIC Inc.
   "^menlo,.*":

MAINTAINERS

···
 M:	Cosmin Tanislav <[e-mail]>
 L:	[e-mail]
 S:	Supported
-W:	http://ez.analog.com/community/linux-device-drivers
+W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/iio/accel/adi,adxl367.yaml
 F:	drivers/iio/accel/adxl367*
 
···
 L:	[e-mail]
 S:	Maintained
 F:	drivers/platform/x86/dell/alienware-wmi.c
-
-ALL SENSORS DLH SERIES PRESSURE SENSORS DRIVER
-M:	Tomislav Denis <[e-mail]>
-L:	[e-mail]
-S:	Maintained
-W:	http://www.allsensors.com/
-F:	Documentation/devicetree/bindings/iio/pressure/asc,dlhl60d.yaml
-F:	drivers/iio/pressure/dlhl60d.c
 
 ALLEGRO DVT VIDEO IP CORE DRIVER
 M:	Michael Tretter <[e-mail]>
···
 M:	Cosmin Tanislav <[e-mail]>
 L:	[e-mail]
 S:	Supported
-W:	http://ez.analog.com/community/linux-device-drivers
+W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
 F:	drivers/iio/addac/ad74413r.c
 F:	include/dt-bindings/iio/addac/adi,ad74413r.h
···
 M:	William Breathitt Gray <[e-mail]>
 L:	[e-mail]
 S:	Maintained
-F:	drivers/iio/adc/stx104.c
+F:	drivers/iio/addac/stx104.c
 
 APM DRIVER
 M:	Jiri Kosina <[e-mail]>
···
 M:	Nuno Sá <[e-mail]>
 L:	[e-mail]
 S:	Supported
-W:	http://ez.analog.com/community/linux-device-drivers
+W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/ABI/testing/sysfs-bus-iio-dac-ltc2688
 F:	Documentation/devicetree/bindings/iio/dac/adi,ltc2688.yaml
 F:	drivers/iio/dac/ltc2688.c
···
 S:	Maintained
 F:	Documentation/devicetree/bindings/iio/proximity/maxbotix,mb1232.yaml
 F:	drivers/iio/proximity/mb1232.c
+
+MAXIM MAX11205 DRIVER
+M:	Ramona Bolboaca <[e-mail]>
+L:	[e-mail]
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml
+F:	drivers/iio/adc/max11205.c
 
 MAXIM MAX17040 FAMILY FUEL GAUGE DRIVERS
 R:	Iskren Chernev <[e-mail]>
···
 F:	include/linux/mtd/
 F:	include/uapi/mtd/
 
+MEMSENSING MICROSYSTEMS MSA311 DRIVER
+M:	Dmitry Rokosov <[e-mail]>
+L:	[e-mail]
+S:	Maintained
+F:	Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml
+F:	drivers/iio/accel/msa311.c
+
 MEN A21 WATCHDOG DRIVER
 M:	Johannes Thumshirn <[e-mail]>
 L:	[e-mail]
···
 M:	Marcus Folkesson <[e-mail]>
 M:	Kent Gustavsson <[e-mail]>
 L:	[e-mail]
-S:	Supported
+S:	Maintained
 F:	Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml
 F:	drivers/iio/adc/mcp3911.c
 
···
 M:	Robert Richter <[e-mail]>
 S:	Odd Fixes
 F:	drivers/gpio/gpio-thunderx.c
-
-TI ADS131E0X ADC SERIES DRIVER
-M:	Tomislav Denis <[e-mail]>
-L:	[e-mail]
-S:	Maintained
-F:	Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml
-F:	drivers/iio/adc/ti-ads131e08.c
 
 TI AM437X VPFE DRIVER
 M:	"Lad, Prabhakar" <[e-mail]>

drivers/iio/accel/Kconfig

···
 	  To compile this driver as a module, choose M here: the module
 	  will be called mma9553.
 
+config MSA311
+	tristate "MEMSensing Digital 3-Axis Accelerometer Driver"
+	depends on I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select REGMAP_I2C
+	help
+	  Say yes here to build support for the MEMSensing MSA311
+	  accelerometer driver.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called msa311.
+
 config MXC4005
 	tristate "Memsic MXC4005XC 3-Axis Accelerometer Driver"
 	depends on I2C

drivers/iio/accel/Makefile

···
 obj-$(CONFIG_MMA9551)		+= mma9551.o
 obj-$(CONFIG_MMA9553)		+= mma9553.o
 
+obj-$(CONFIG_MSA311)		+= msa311.o
+
 obj-$(CONFIG_MXC4005)		+= mxc4005.o
 obj-$(CONFIG_MXC6255)		+= mxc6255.o
 

drivers/iio/accel/adxl345_core.c

···
 #include <linux/module.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
+#include <linux/units.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
···
 
 #define ADXL345_BW_RATE			GENMASK(3, 0)
 #define ADXL345_BASE_RATE_NANO_HZ	97656250LL
-#define NHZ_PER_HZ			1000000000LL
 
 #define ADXL345_POWER_CTL_MEASURE	BIT(3)
 #define ADXL345_POWER_CTL_STANDBY	0x00
···
 
 		samp_freq_nhz = ADXL345_BASE_RATE_NANO_HZ <<
 				(regval & ADXL345_BW_RATE);
-		*val = div_s64_rem(samp_freq_nhz, NHZ_PER_HZ, val2);
+		*val = div_s64_rem(samp_freq_nhz, NANOHZ_PER_HZ, val2);
 
 		return IIO_VAL_INT_PLUS_NANO;
 	}
···
 				    ADXL345_REG_OFS_AXIS(chan->address),
 				    val / 4);
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		n = div_s64(val * NHZ_PER_HZ + val2, ADXL345_BASE_RATE_NANO_HZ);
+		n = div_s64(val * NANOHZ_PER_HZ + val2,
+			    ADXL345_BASE_RATE_NANO_HZ);
 
 		return regmap_update_bits(data->regmap, ADXL345_REG_BW_RATE,
 					  ADXL345_BW_RATE,

drivers/iio/accel/bma400.h

···
 #define BMA400_INT_STAT1_REG        0x0f
 #define BMA400_INT_STAT2_REG        0x10
 #define BMA400_INT12_MAP_REG        0x23
+#define BMA400_INT_ENG_OVRUN_MSK    BIT(4)
 
 /* Temperature register */
 #define BMA400_TEMP_DATA_REG        0x11
···
 #define BMA400_INT_GEN1_MSK         BIT(2)
 #define BMA400_INT_GEN2_MSK         BIT(3)
 #define BMA400_GEN_HYST_MSK         GENMASK(1, 0)
+
+/* TAP config registers */
+#define BMA400_TAP_CONFIG           0x57
+#define BMA400_TAP_CONFIG1          0x58
+#define BMA400_S_TAP_MSK            BIT(2)
+#define BMA400_D_TAP_MSK            BIT(3)
+#define BMA400_INT_S_TAP_MSK        BIT(10)
+#define BMA400_INT_D_TAP_MSK        BIT(11)
+#define BMA400_TAP_SEN_MSK          GENMASK(2, 0)
+#define BMA400_TAP_TICSTH_MSK       GENMASK(1, 0)
+#define BMA400_TAP_QUIET_MSK        GENMASK(3, 2)
+#define BMA400_TAP_QUIETDT_MSK      GENMASK(5, 4)
+#define BMA400_TAP_TIM_LIST_LEN     4
 
 /*
  * BMA400_SCALE_MIN macro value represents m/s^2 for 1 LSB before

drivers/iio/accel/bma400_core.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/events.h>
+#include <linux/iio/sysfs.h>
 #include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
···
 static int bma400_sample_freqs[14];
 
 static const int bma400_osr_range[] = { 0, 1, 3 };
+
+static int tap_reset_timeout[BMA400_TAP_TIM_LIST_LEN] = {
+	300000,
+	400000,
+	500000,
+	600000
+};
+
+static int tap_max2min_time[BMA400_TAP_TIM_LIST_LEN] = {
+	30000,
+	45000,
+	60000,
+	90000
+};
+
+static int double_tap2_min_delay[BMA400_TAP_TIM_LIST_LEN] = {
+	20000,
+	40000,
+	60000,
+	80000
+};
 
 /* See the ACC_CONFIG0 section of the datasheet */
 enum bma400_power_mode {
···
 	bool step_event_en;
 	bool activity_event_en;
 	unsigned int generic_event_en;
+	unsigned int tap_event_en_bitmask;
 	/* Correct time stamp alignment */
 	struct {
 		__le16 buff[3];
···
 				       BIT(IIO_EV_INFO_HYSTERESIS) |
 				       BIT(IIO_EV_INFO_ENABLE),
 	},
+	{
+		.type = IIO_EV_TYPE_GESTURE,
+		.dir = IIO_EV_DIR_SINGLETAP,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
+				       BIT(IIO_EV_INFO_ENABLE) |
+				       BIT(IIO_EV_INFO_RESET_TIMEOUT),
+	},
+	{
+		.type = IIO_EV_TYPE_GESTURE,
+		.dir = IIO_EV_DIR_DOUBLETAP,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
+				       BIT(IIO_EV_INFO_ENABLE) |
+				       BIT(IIO_EV_INFO_RESET_TIMEOUT) |
+				       BIT(IIO_EV_INFO_TAP2_MIN_DELAY),
+	},
+};
+
+static int usec_to_tapreg_raw(int usec, const int *time_list)
+{
+	int index;
+
+	for (index = 0; index < BMA400_TAP_TIM_LIST_LEN; index++) {
+		if (usec == time_list[index])
+			return index;
+	}
+	return -EINVAL;
+}
+
+static ssize_t in_accel_gesture_tap_maxtomin_time_show(struct device *dev,
+						       struct device_attribute *attr,
+						       char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret, reg_val, raw, vals[2];
+
+	ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1, &reg_val);
+	if (ret)
+		return ret;
+
+	raw = FIELD_GET(BMA400_TAP_TICSTH_MSK, reg_val);
+	vals[0] = 0;
+	vals[1] = tap_max2min_time[raw];
+
+	return iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, vals);
+}
+
+static ssize_t in_accel_gesture_tap_maxtomin_time_store(struct device *dev,
+							struct device_attribute *attr,
+							const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret, val_int, val_fract, raw;
+
+	ret = iio_str_to_fixpoint(buf, 100000, &val_int, &val_fract);
+	if (ret)
+		return ret;
+
+	raw = usec_to_tapreg_raw(val_fract, tap_max2min_time);
+	if (raw < 0)
+		return -EINVAL;
+
+	ret = regmap_update_bits(data->regmap, BMA400_TAP_CONFIG1,
+				 BMA400_TAP_TICSTH_MSK,
+				 FIELD_PREP(BMA400_TAP_TICSTH_MSK, raw));
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static IIO_DEVICE_ATTR_RW(in_accel_gesture_tap_maxtomin_time, 0);
+
+/*
+ * Tap interrupts works with 200 Hz input data rate and the time based tap
+ * controls are in the terms of data samples so the below calculation is
+ * used to convert the configuration values into seconds.
+ * e.g.:
+ * 60 data samples * 0.005 ms = 0.3 seconds.
+ * 80 data samples * 0.005 ms = 0.4 seconds.
+ */
+
+/* quiet configuration values in seconds */
+static IIO_CONST_ATTR(in_accel_gesture_tap_reset_timeout_available,
+		      "0.3 0.4 0.5 0.6");
+
+/* tics_th configuration values in seconds */
+static IIO_CONST_ATTR(in_accel_gesture_tap_maxtomin_time_available,
+		      "0.03 0.045 0.06 0.09");
+
+/* quiet_dt configuration values in seconds */
+static IIO_CONST_ATTR(in_accel_gesture_doubletap_tap2_min_delay_available,
+		      "0.02 0.04 0.06 0.08");
+
+/* List of sensitivity values available to configure tap interrupts */
+static IIO_CONST_ATTR(in_accel_gesture_tap_value_available, "0 1 2 3 4 5 6 7");
+
+static struct attribute *bma400_event_attributes[] = {
+	&iio_const_attr_in_accel_gesture_tap_value_available.dev_attr.attr,
+	&iio_const_attr_in_accel_gesture_tap_reset_timeout_available.dev_attr.attr,
+	&iio_const_attr_in_accel_gesture_tap_maxtomin_time_available.dev_attr.attr,
+	&iio_const_attr_in_accel_gesture_doubletap_tap2_min_delay_available.dev_attr.attr,
+	&iio_dev_attr_in_accel_gesture_tap_maxtomin_time.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group bma400_event_attribute_group = {
+	.attrs = bma400_event_attributes,
 };
 
 #define BMA400_ACC_CHANNEL(_index, _axis) { \
···
 		case IIO_EV_DIR_FALLING:
 			return FIELD_GET(BMA400_INT_GEN2_MSK,
 					 data->generic_event_en);
+		case IIO_EV_DIR_SINGLETAP:
+			return FIELD_GET(BMA400_S_TAP_MSK,
+					 data->tap_event_en_bitmask);
+		case IIO_EV_DIR_DOUBLETAP:
+			return FIELD_GET(BMA400_D_TAP_MSK,
+					 data->tap_event_en_bitmask);
 		default:
 			return -EINVAL;
 		}
···
 	return 0;
 }
 
+static int bma400_tap_event_en(struct bma400_data *data,
+			       enum iio_event_direction dir, int state)
+{
+	unsigned int mask, field_value;
+	int ret;
+
+	/*
+	 * Tap interrupts can be configured only in normal mode.
+	 * See table in section 4.3 "Power modes - performance modes" of
+	 * datasheet v1.2.
+	 */
+	if (data->power_mode != POWER_MODE_NORMAL)
+		return -EINVAL;
+
+	/*
+	 * Tap interrupts are operating with a data rate of 200Hz.
+	 * See section 4.7 "Tap sensing interrupt" in datasheet v1.2.
+	 */
+	if (data->sample_freq.hz != 200 && state) {
+		dev_err(data->dev, "Invalid data rate for tap interrupts.\n");
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT12_MAP_REG,
+				 BMA400_S_TAP_MSK,
+				 FIELD_PREP(BMA400_S_TAP_MSK, state));
+	if (ret)
+		return ret;
+
+	switch (dir) {
+	case IIO_EV_DIR_SINGLETAP:
+		mask = BMA400_S_TAP_MSK;
+		set_mask_bits(&field_value, BMA400_S_TAP_MSK,
+			      FIELD_PREP(BMA400_S_TAP_MSK, state));
+		break;
+	case IIO_EV_DIR_DOUBLETAP:
+		mask = BMA400_D_TAP_MSK;
+		set_mask_bits(&field_value, BMA400_D_TAP_MSK,
+			      FIELD_PREP(BMA400_D_TAP_MSK, state));
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT_CONFIG1_REG, mask,
+				 field_value);
+	if (ret)
+		return ret;
+
+	set_mask_bits(&data->tap_event_en_bitmask, mask, field_value);
+
+	return 0;
+}
+
+static int bma400_disable_adv_interrupt(struct bma400_data *data)
+{
+	int ret;
+
+	ret = regmap_write(data->regmap, BMA400_INT_CONFIG0_REG, 0);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(data->regmap, BMA400_INT_CONFIG1_REG, 0);
+	if (ret)
+		return ret;
+
+	data->tap_event_en_bitmask = 0;
+	data->generic_event_en = 0;
+	data->step_event_en = false;
+	data->activity_event_en = false;
+
+	return 0;
+}
+
 static int bma400_write_event_config(struct iio_dev *indio_dev,
 				     const struct iio_chan_spec *chan,
 				     enum iio_event_type type,
···
 
 	switch (chan->type) {
 	case IIO_ACCEL:
-		mutex_lock(&data->mutex);
-		ret = bma400_activity_event_en(data, dir, state);
-		mutex_unlock(&data->mutex);
-		return ret;
+		switch (type) {
+		case IIO_EV_TYPE_MAG:
+			mutex_lock(&data->mutex);
+			ret = bma400_activity_event_en(data, dir, state);
+			mutex_unlock(&data->mutex);
+			return ret;
+		case IIO_EV_TYPE_GESTURE:
+			mutex_lock(&data->mutex);
+			ret = bma400_tap_event_en(data, dir, state);
+			mutex_unlock(&data->mutex);
+			return ret;
+		default:
+			return -EINVAL;
+		}
 	case IIO_STEPS:
 		mutex_lock(&data->mutex);
 		ret = bma400_steps_event_enable(data, state);
···
 				   int *val, int *val2)
 {
 	struct bma400_data *data = iio_priv(indio_dev);
-	int ret, reg;
+	int ret, reg, reg_val, raw;
 
-	switch (chan->type) {
-	case IIO_ACCEL:
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (type) {
+	case IIO_EV_TYPE_MAG:
 		reg = get_gen_config_reg(dir);
 		if (reg < 0)
 			return -EINVAL;
···
 		default:
 			return -EINVAL;
 		}
+	case IIO_EV_TYPE_GESTURE:
+		switch (info) {
+		case IIO_EV_INFO_VALUE:
+			ret = regmap_read(data->regmap, BMA400_TAP_CONFIG,
+					  &reg_val);
+			if (ret)
+				return ret;
+
+			*val = FIELD_GET(BMA400_TAP_SEN_MSK, reg_val);
+			return IIO_VAL_INT;
+		case IIO_EV_INFO_RESET_TIMEOUT:
+			ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1,
+					  &reg_val);
+			if (ret)
+				return ret;
+
+			raw = FIELD_GET(BMA400_TAP_QUIET_MSK, reg_val);
+			*val = 0;
+			*val2 = tap_reset_timeout[raw];
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_EV_INFO_TAP2_MIN_DELAY:
+			ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1,
+					  &reg_val);
+			if (ret)
+				return ret;
+
+			raw = FIELD_GET(BMA400_TAP_QUIETDT_MSK, reg_val);
+			*val = 0;
+			*val2 = double_tap2_min_delay[raw];
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
 	default:
 		return -EINVAL;
 	}
···
 				    int val, int val2)
 {
 	struct bma400_data *data = iio_priv(indio_dev);
-	int reg, ret;
+	int reg, ret, raw;
 
-	switch (chan->type) {
-	case IIO_ACCEL:
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (type) {
+	case IIO_EV_TYPE_MAG:
 		reg = get_gen_config_reg(dir);
 		if (reg < 0)
 			return -EINVAL;
···
 						  BMA400_GEN_HYST_MSK,
 						  FIELD_PREP(BMA400_GEN_HYST_MSK,
 							     val));
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_TYPE_GESTURE:
+		switch (info) {
+		case IIO_EV_INFO_VALUE:
+			if (val < 0 || val > 7)
+				return -EINVAL;
+
+			return regmap_update_bits(data->regmap,
+						  BMA400_TAP_CONFIG,
+						  BMA400_TAP_SEN_MSK,
+						  FIELD_PREP(BMA400_TAP_SEN_MSK,
+							     val));
+		case IIO_EV_INFO_RESET_TIMEOUT:
+			raw = usec_to_tapreg_raw(val2, tap_reset_timeout);
+			if (raw < 0)
+				return -EINVAL;
+
+			return regmap_update_bits(data->regmap,
+						  BMA400_TAP_CONFIG1,
+						  BMA400_TAP_QUIET_MSK,
+						  FIELD_PREP(BMA400_TAP_QUIET_MSK,
+							     raw));
+		case IIO_EV_INFO_TAP2_MIN_DELAY:
+			raw = usec_to_tapreg_raw(val2, double_tap2_min_delay);
+			if (raw < 0)
+				return -EINVAL;
+
+			return regmap_update_bits(data->regmap,
+						  BMA400_TAP_CONFIG1,
+						  BMA400_TAP_QUIETDT_MSK,
+						  FIELD_PREP(BMA400_TAP_QUIETDT_MSK,
+							     raw));
 		default:
 			return -EINVAL;
 		}
···
 	.write_event_config = bma400_write_event_config,
 	.write_event_value = bma400_write_event_value,
 	.read_event_value = bma400_read_event_value,
+	.event_attrs = &bma400_event_attribute_group,
 };
 
 static const struct iio_trigger_ops bma400_trigger_ops = {
···
 	 */
 	if (ret || !data->status)
 		goto unlock_err;
+
+	/*
+	 * Disable all advance interrupts if interrupt engine overrun occurs.
+	 * See section 4.7 "Interrupt engine overrun" in datasheet v1.2.
+	 */
+	if (FIELD_GET(BMA400_INT_ENG_OVRUN_MSK, le16_to_cpu(data->status))) {
+		bma400_disable_adv_interrupt(data);
+		dev_err(data->dev, "Interrupt engine overrun\n");
+		goto unlock_err;
+	}
+
+	if (FIELD_GET(BMA400_INT_S_TAP_MSK, le16_to_cpu(data->status)))
+		iio_push_event(indio_dev,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL, 0,
+						  IIO_MOD_X_OR_Y_OR_Z,
+						  IIO_EV_TYPE_GESTURE,
+						  IIO_EV_DIR_SINGLETAP),
+			       timestamp);
+
+	if (FIELD_GET(BMA400_INT_D_TAP_MSK, le16_to_cpu(data->status)))
+		iio_push_event(indio_dev,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL, 0,
+						  IIO_MOD_X_OR_Y_OR_Z,
+						  IIO_EV_TYPE_GESTURE,
+						  IIO_EV_DIR_DOUBLETAP),
+			       timestamp);
 
 	if (FIELD_GET(BMA400_INT_GEN1_MSK, le16_to_cpu(data->status)))
 		ev_dir = IIO_EV_DIR_RISING;
···
 EXPORT_SYMBOL_NS(bma400_probe, IIO_BMA400);
 
 MODULE_AUTHOR("Dan Robertson <[e-mail]>");
+MODULE_AUTHOR("Jagath Jog J <[e-mail]>");
 MODULE_DESCRIPTION("Bosch BMA400 triaxial acceleration sensor core");
 MODULE_LICENSE("GPL");

drivers/iio/accel/kxcjk-1013.c

···
 
 	/*
 	 * We will expect the enable and disable to do operation in
-	 * in reverse order. This will happen here anyway as our
+	 * reverse order. This will happen here anyway as our
 	 * resume operation uses sync mode runtime pm calls, the
 	 * suspend operation will be delayed by autosuspend delay
 	 * So the disable operation will still happen in reverse of

drivers/iio/accel/msa311.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * MEMSensing digital 3-Axis accelerometer
+ *
+ * MSA311 is a tri-axial, low-g accelerometer with I2C digital output for
+ * sensitivity consumer applications. It has dynamic user-selectable full
+ * scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements
+ * with output data rates from 1Hz to 1000Hz.
+ *
+ * MSA311 is available in an ultra small (2mm x 2mm, height 0.95mm) LGA package
+ * and is guaranteed to operate over -40C to +85C.
+ *
+ * This driver supports following MSA311 features:
+ *     - IIO interface
+ *     - Different power modes: NORMAL, SUSPEND
+ *     - ODR (Output Data Rate) selection
+ *     - Scale selection
+ *     - IIO triggered buffer
+ *     - NEW_DATA interrupt + trigger
+ *
+ * Below features to be done:
+ *     - Motion Events: ACTIVE, TAP, ORIENT, FREEFALL
+ *     - Low Power mode
+ *
+ * Copyright (c) 2022, SberDevices. All Rights Reserved.
+ *
+ * Author: Dmitry Rokosov <[e-mail]>
+ */
+
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/string_helpers.h>
+#include <linux/units.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#define MSA311_SOFT_RESET_REG     0x00
+#define MSA311_PARTID_REG         0x01
+#define MSA311_ACC_X_REG          0x02
+#define MSA311_ACC_Y_REG          0x04
+#define MSA311_ACC_Z_REG          0x06
+#define MSA311_MOTION_INT_REG     0x09
+#define MSA311_DATA_INT_REG       0x0A
+#define MSA311_TAP_ACTIVE_STS_REG 0x0B
+#define MSA311_ORIENT_STS_REG     0x0C
+#define MSA311_RANGE_REG          0x0F
+#define MSA311_ODR_REG            0x10
+#define MSA311_PWR_MODE_REG       0x11
+#define MSA311_SWAP_POLARITY_REG  0x12
+#define MSA311_INT_SET_0_REG      0x16
+#define MSA311_INT_SET_1_REG      0x17
+#define MSA311_INT_MAP_0_REG      0x19
+#define MSA311_INT_MAP_1_REG      0x1A
+#define MSA311_INT_CONFIG_REG     0x20
+#define MSA311_INT_LATCH_REG      0x21
+#define MSA311_FREEFALL_DUR_REG   0x22
+#define MSA311_FREEFALL_TH_REG    0x23
+#define MSA311_FREEFALL_HY_REG    0x24
+#define MSA311_ACTIVE_DUR_REG     0x27
+#define MSA311_ACTIVE_TH_REG      0x28
+#define MSA311_TAP_DUR_REG        0x2A
+#define MSA311_TAP_TH_REG         0x2B
+#define MSA311_ORIENT_HY_REG      0x2C
+#define MSA311_Z_BLOCK_REG        0x2D
+#define MSA311_OFFSET_X_REG       0x38
+#define MSA311_OFFSET_Y_REG       0x39
+#define MSA311_OFFSET_Z_REG       0x3A
+
+enum msa311_fields {
+	/* Soft_Reset */
+	F_SOFT_RESET_I2C, F_SOFT_RESET_SPI,
+	/* Motion_Interrupt */
+	F_ORIENT_INT, F_S_TAP_INT, F_D_TAP_INT, F_ACTIVE_INT, F_FREEFALL_INT,
+	/* Data_Interrupt */
+	F_NEW_DATA_INT,
+	/* Tap_Active_Status */
+	F_TAP_SIGN, F_TAP_FIRST_X, F_TAP_FIRST_Y, F_TAP_FIRST_Z, F_ACTV_SIGN,
+	F_ACTV_FIRST_X, F_ACTV_FIRST_Y, F_ACTV_FIRST_Z,
+	/* Orientation_Status */
+	F_ORIENT_Z, F_ORIENT_X_Y,
+	/* Range */
+	F_FS,
+	/* ODR */
+	F_X_AXIS_DIS, F_Y_AXIS_DIS, F_Z_AXIS_DIS, F_ODR,
+	/* Power Mode/Bandwidth */
+	F_PWR_MODE, F_LOW_POWER_BW,
+	/* Swap_Polarity */
+	F_X_POLARITY, F_Y_POLARITY, F_Z_POLARITY, F_X_Y_SWAP,
+	/* Int_Set_0 */
+	F_ORIENT_INT_EN, F_S_TAP_INT_EN, F_D_TAP_INT_EN, F_ACTIVE_INT_EN_Z,
+	F_ACTIVE_INT_EN_Y, F_ACTIVE_INT_EN_X,
+	/* Int_Set_1 */
+	F_NEW_DATA_INT_EN, F_FREEFALL_INT_EN,
+	/* Int_Map_0 */
+	F_INT1_ORIENT, F_INT1_S_TAP, F_INT1_D_TAP, F_INT1_ACTIVE,
+	F_INT1_FREEFALL,
+	/* Int_Map_1 */
+	F_INT1_NEW_DATA,
+	/* Int_Config */
+	F_INT1_OD, F_INT1_LVL,
+	/* Int_Latch */
+	F_RESET_INT, F_LATCH_INT,
+	/* Freefall_Hy */
+	F_FREEFALL_MODE, F_FREEFALL_HY,
+	/* Active_Dur */
+	F_ACTIVE_DUR,
+	/* Tap_Dur */
+	F_TAP_QUIET, F_TAP_SHOCK, F_TAP_DUR,
+	/* Tap_Th */
+	F_TAP_TH,
+	/* Orient_Hy */
+	F_ORIENT_HYST, F_ORIENT_BLOCKING, F_ORIENT_MODE,
+	/* Z_Block */
+	F_Z_BLOCKING,
+	/* End of register map */
+	F_MAX_FIELDS,
+};
+
+static const struct reg_field msa311_reg_fields[] = {
+	/* Soft_Reset */
+	[F_SOFT_RESET_I2C] = REG_FIELD(MSA311_SOFT_RESET_REG, 2, 2),
+	[F_SOFT_RESET_SPI] = REG_FIELD(MSA311_SOFT_RESET_REG, 5, 5),
+	/* Motion_Interrupt */
+	[F_ORIENT_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 6, 6),
+	[F_S_TAP_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 5, 5),
+	[F_D_TAP_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 4, 4),
+	[F_ACTIVE_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 2, 2),
+	[F_FREEFALL_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 0, 0),
+	/* Data_Interrupt */
+	[F_NEW_DATA_INT] = REG_FIELD(MSA311_DATA_INT_REG, 0, 0),
+	/* Tap_Active_Status */
+	[F_TAP_SIGN] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 7, 7),
+	[F_TAP_FIRST_X] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 6, 6),
+	[F_TAP_FIRST_Y] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 5, 5),
+	[F_TAP_FIRST_Z] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 4, 4),
+	[F_ACTV_SIGN] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 3, 3),
+	[F_ACTV_FIRST_X] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 2, 2),
+	[F_ACTV_FIRST_Y] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 1, 1),
+	[F_ACTV_FIRST_Z] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 0, 0),
+	/* Orientation_Status */
+	[F_ORIENT_Z] = REG_FIELD(MSA311_ORIENT_STS_REG, 6, 6),
+	[F_ORIENT_X_Y] = REG_FIELD(MSA311_ORIENT_STS_REG, 4, 5),
+	/* Range */
+	[F_FS] = REG_FIELD(MSA311_RANGE_REG, 0, 1),
+	/* ODR */
+	[F_X_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 7, 7),
+	[F_Y_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 6, 6),
+	[F_Z_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 5, 5),
+	[F_ODR] = REG_FIELD(MSA311_ODR_REG, 0, 3),
+	/* Power Mode/Bandwidth */
+	[F_PWR_MODE] = REG_FIELD(MSA311_PWR_MODE_REG, 6, 7),
+	[F_LOW_POWER_BW] = REG_FIELD(MSA311_PWR_MODE_REG, 1, 4),
+	/* Swap_Polarity */
+	[F_X_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 3, 3),
+	[F_Y_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 2, 2),
+	[F_Z_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 1, 1),
+	[F_X_Y_SWAP] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 0, 0),
+	/* Int_Set_0 */
+	[F_ORIENT_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 6, 6),
+	[F_S_TAP_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 5, 5),
+	[F_D_TAP_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 4, 4),
+	[F_ACTIVE_INT_EN_Z] = REG_FIELD(MSA311_INT_SET_0_REG, 2, 2),
+	[F_ACTIVE_INT_EN_Y] = REG_FIELD(MSA311_INT_SET_0_REG, 1, 1),
+	[F_ACTIVE_INT_EN_X] = REG_FIELD(MSA311_INT_SET_0_REG, 0, 0),
+	/* Int_Set_1 */
+	[F_NEW_DATA_INT_EN] = REG_FIELD(MSA311_INT_SET_1_REG, 4, 4),
+	[F_FREEFALL_INT_EN] = REG_FIELD(MSA311_INT_SET_1_REG, 3, 3),
+	/* Int_Map_0 */
+	[F_INT1_ORIENT] = REG_FIELD(MSA311_INT_MAP_0_REG, 6, 6),
+	[F_INT1_S_TAP] = REG_FIELD(MSA311_INT_MAP_0_REG, 5, 5),
+	[F_INT1_D_TAP] = REG_FIELD(MSA311_INT_MAP_0_REG, 4, 4),
+	[F_INT1_ACTIVE] = REG_FIELD(MSA311_INT_MAP_0_REG, 2, 2),
+	[F_INT1_FREEFALL] = REG_FIELD(MSA311_INT_MAP_0_REG, 0, 0),
+	/* Int_Map_1 */
+	[F_INT1_NEW_DATA] = REG_FIELD(MSA311_INT_MAP_1_REG, 0, 0),
+	/* Int_Config */
+	[F_INT1_OD] = REG_FIELD(MSA311_INT_CONFIG_REG, 1, 1),
+	[F_INT1_LVL] = REG_FIELD(MSA311_INT_CONFIG_REG, 0, 0),
+	/* Int_Latch */
+	[F_RESET_INT] = REG_FIELD(MSA311_INT_LATCH_REG, 7, 7),
+	[F_LATCH_INT] = REG_FIELD(MSA311_INT_LATCH_REG, 0, 3),
+	/* Freefall_Hy */
+	[F_FREEFALL_MODE] = REG_FIELD(MSA311_FREEFALL_HY_REG, 2, 2),
+	[F_FREEFALL_HY] = REG_FIELD(MSA311_FREEFALL_HY_REG, 0, 1),
+	/* Active_Dur */
+	[F_ACTIVE_DUR] = REG_FIELD(MSA311_ACTIVE_DUR_REG, 0, 1),
+	/* Tap_Dur */
+	[F_TAP_QUIET] = REG_FIELD(MSA311_TAP_DUR_REG, 7, 7),
+	[F_TAP_SHOCK] = REG_FIELD(MSA311_TAP_DUR_REG, 6, 6),
+	[F_TAP_DUR] = REG_FIELD(MSA311_TAP_DUR_REG, 0, 2),
+	/* Tap_Th */
+	[F_TAP_TH] = REG_FIELD(MSA311_TAP_TH_REG, 0, 4),
+	/* Orient_Hy */
+	[F_ORIENT_HYST] = REG_FIELD(MSA311_ORIENT_HY_REG, 4, 6),
+	[F_ORIENT_BLOCKING] = REG_FIELD(MSA311_ORIENT_HY_REG, 2, 3),
+	[F_ORIENT_MODE] = REG_FIELD(MSA311_ORIENT_HY_REG, 0, 1),
+	/* Z_Block */
+	[F_Z_BLOCKING] = REG_FIELD(MSA311_Z_BLOCK_REG, 0, 3),
+};
+
+#define MSA311_WHO_AM_I 0x13
+
+/*
+ * Possible Full Scale ranges
+ *
+ * Axis data is 12-bit signed value, so
+ *
+ * fs0 = (2 + 2) * 9.81 / (2^11) = 0.009580
+ * fs1 = (4 + 4) * 9.81 / (2^11) = 0.019160
+ * fs2 = (8 + 8) * 9.81 / (2^11) = 0.038320
+ * fs3 = (16 + 16) * 9.81 / (2^11) = 0.076641
+ */
+enum {
+	MSA311_FS_2G,
+	MSA311_FS_4G,
+	MSA311_FS_8G,
+	MSA311_FS_16G,
+};
+
+struct iio_decimal_fract {
+	int integral;
+	int microfract;
+};
+
+static const struct iio_decimal_fract msa311_fs_table[] = {
+	{0, 9580}, {0, 19160}, {0, 38320}, {0, 76641},
+};
+
+/* Possible Output Data Rate values */
+enum {
+	MSA311_ODR_1_HZ,
+	MSA311_ODR_1_95_HZ,
+	MSA311_ODR_3_9_HZ,
+	MSA311_ODR_7_81_HZ,
+	MSA311_ODR_15_63_HZ,
+	MSA311_ODR_31_25_HZ,
+	MSA311_ODR_62_5_HZ,
+	MSA311_ODR_125_HZ,
+	MSA311_ODR_250_HZ,
+	MSA311_ODR_500_HZ,
+	MSA311_ODR_1000_HZ,
+};
+
+static const struct iio_decimal_fract msa311_odr_table[] = {
+	{1, 0}, {1, 950000}, {3, 900000}, {7, 810000}, {15, 630000},
+	{31, 250000}, {62, 500000}, {125, 0}, {250, 0}, {500, 0}, {1000, 0},
+};
+
+/* All supported power modes */
+#define MSA311_PWR_MODE_NORMAL  0b00
+#define MSA311_PWR_MODE_LOW     0b01
+#define MSA311_PWR_MODE_UNKNOWN 0b10
+#define MSA311_PWR_MODE_SUSPEND 0b11
+static const char * const msa311_pwr_modes[] = {
+	[MSA311_PWR_MODE_NORMAL] = "normal",
+	[MSA311_PWR_MODE_LOW] = "low",
+	[MSA311_PWR_MODE_UNKNOWN] = "unknown",
+	[MSA311_PWR_MODE_SUSPEND] = "suspend",
+};
+
+/* Autosuspend delay */
+#define MSA311_PWR_SLEEP_DELAY_MS 2000
+
+/* Possible INT1 types and levels */
+enum {
+	MSA311_INT1_OD_PUSH_PULL,
+	MSA311_INT1_OD_OPEN_DRAIN,
+};
+
+enum {
+	MSA311_INT1_LVL_LOW,
+	MSA311_INT1_LVL_HIGH,
+};
+
+/* Latch INT modes */
+#define MSA311_LATCH_INT_NOT_LATCHED 0b0000
+#define MSA311_LATCH_INT_250MS       0b0001
+#define MSA311_LATCH_INT_500MS       0b0010
+#define MSA311_LATCH_INT_1S          0b0011
+#define MSA311_LATCH_INT_2S          0b0100
+#define MSA311_LATCH_INT_4S          0b0101
+#define MSA311_LATCH_INT_8S          0b0110
+#define MSA311_LATCH_INT_1MS         0b1010
+#define MSA311_LATCH_INT_2MS         0b1011
+#define MSA311_LATCH_INT_25MS        0b1100
+#define MSA311_LATCH_INT_50MS        0b1101
+#define MSA311_LATCH_INT_100MS       0b1110
+#define MSA311_LATCH_INT_LATCHED     0b0111
+
+static const struct regmap_range msa311_readonly_registers[] = {
+	regmap_reg_range(MSA311_PARTID_REG, MSA311_ORIENT_STS_REG),
+};
+
+static const struct regmap_access_table msa311_writeable_table = {
+	.no_ranges = msa311_readonly_registers,
+	.n_no_ranges = ARRAY_SIZE(msa311_readonly_registers),
+};
+
+static const struct regmap_range msa311_writeonly_registers[] = {
+	regmap_reg_range(MSA311_SOFT_RESET_REG, MSA311_SOFT_RESET_REG),
+};
+
+static const struct regmap_access_table msa311_readable_table = {
+	.no_ranges = msa311_writeonly_registers,
+	.n_no_ranges = ARRAY_SIZE(msa311_writeonly_registers),
+};
+
+static const struct regmap_range msa311_volatile_registers[] = {
+	regmap_reg_range(MSA311_ACC_X_REG, MSA311_ORIENT_STS_REG),
+};
+
+static const struct regmap_access_table msa311_volatile_table = {
+	.yes_ranges = msa311_volatile_registers,
+	.n_yes_ranges = ARRAY_SIZE(msa311_volatile_registers),
+};
+
+static const struct regmap_config msa311_regmap_config = {
+	.name = "msa311",
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = MSA311_OFFSET_Z_REG,
+	.wr_table = &msa311_writeable_table,
+	.rd_table = &msa311_readable_table,
+	.volatile_table = &msa311_volatile_table,
+	.cache_type = REGCACHE_RBTREE,
+};
+
+#define MSA311_GENMASK(field) ({                \
+	typeof(&(msa311_reg_fields)[0]) _field; \
+	_field = &msa311_reg_fields[(field)];   \
+	GENMASK(_field->msb, _field->lsb);      \
+})
+
+/**
+ * struct msa311_priv - MSA311 internal private state
+ * @regs: Underlying I2C bus adapter used to abstract slave
+ *        register accesses
+ * @fields: Abstract objects for each registers fields access
+ * @dev: Device handler associated with appropriate bus client
+ * @lock: Protects msa311 device state between setup and data access routines
+ *        (power transitions, samp_freq/scale tune, retrieving axes data, etc)
+ * @chip_name: Chip name in the format "msa311-%02x" % partid
+ * @new_data_trig: Optional NEW_DATA interrupt driven trigger used
+ *                 to notify external consumers a new sample is ready
+ * @vdd: Optional external voltage regulator for the device power supply
+ */
+struct msa311_priv {
+	struct regmap *regs;
+	struct regmap_field *fields[F_MAX_FIELDS];
+
+	struct device *dev;
+	struct mutex lock;
+	char *chip_name;
+
+	struct iio_trigger *new_data_trig;
+	struct regulator *vdd;
+};
+
+enum msa311_si {
+	MSA311_SI_X,
+	MSA311_SI_Y,
+	MSA311_SI_Z,
+	MSA311_SI_TIMESTAMP,
+};
+
+#define MSA311_ACCEL_CHANNEL(axis) {                                        \
+	.type = IIO_ACCEL,                                                  \
+	.modified = 1,                                                      \
+	.channel2 = IIO_MOD_##axis,                                         \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),                       \
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |              \
+				    BIT(IIO_CHAN_INFO_SAMP_FREQ),           \
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE) |    \
+					      BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+	.scan_index = MSA311_SI_##axis,                                     \
+	.scan_type = {                                                      \
+		.sign = 's',                                                \
+		.realbits = 12,                                             \
+		.storagebits = 16,                                          \
+		.shift = 4,                                                 \
+		.endianness = IIO_LE,                                       \
+	},                                                                  \
+	.datasheet_name = "ACC_"#axis,                                      \
+}
+
+static const struct iio_chan_spec msa311_channels[] = {
+	MSA311_ACCEL_CHANNEL(X),
+	MSA311_ACCEL_CHANNEL(Y),
+	MSA311_ACCEL_CHANNEL(Z),
+	IIO_CHAN_SOFT_TIMESTAMP(MSA311_SI_TIMESTAMP),
+};
+
+/**
+ * msa311_get_odr() - Read Output Data Rate (ODR) value from MSA311 accel
+ * @msa311: MSA311 internal private state
+ * @odr: output ODR value
+ *
+ * This function should be called under msa311->lock.
+ *
+ * Return: 0 on success, -ERRNO in other failures
+ */
+static int msa311_get_odr(struct msa311_priv *msa311, unsigned int *odr)
+{
+	int err;
+
+	err = regmap_field_read(msa311->fields[F_ODR], odr);
+	if (err)
+		return err;
+
+	/*
+	 * Filter the same 1000Hz ODR register values based on datasheet info.
+	 * ODR can be equal to 1010-1111 for 1000Hz, but function returns 1010
+	 * all the time.
+	 */
+	if (*odr > MSA311_ODR_1000_HZ)
+		*odr = MSA311_ODR_1000_HZ;
+
+	return 0;
+}
+
+/**
+ * msa311_set_odr() - Setup Output Data Rate (ODR) value for MSA311 accel
+ * @msa311: MSA311 internal private state
+ * @odr: requested ODR value
+ *
+ * This function should be called under msa311->lock. Possible ODR values:
+ *     - 1Hz (not available in normal mode)
+ *     - 1.95Hz (not available in normal mode)
+ *     - 3.9Hz
+ *     - 7.81Hz
+ *     - 15.63Hz
+ *     - 31.25Hz
+ *     - 62.5Hz
+ *     - 125Hz
+ *     - 250Hz
+ *     - 500Hz
+ *     - 1000Hz
+ *
+ * Return: 0 on success, -EINVAL for bad ODR value in the certain power mode,
+ *         -ERRNO in other failures
+ */
+static int msa311_set_odr(struct msa311_priv *msa311, unsigned int odr)
+{
+	struct device *dev = msa311->dev;
+	unsigned int pwr_mode;
+	bool good_odr;
+	int err;
+
+	err = regmap_field_read(msa311->fields[F_PWR_MODE], &pwr_mode);
+	if (err)
+		return err;
+
+	/* Filter bad ODR values */
+	if (pwr_mode == MSA311_PWR_MODE_NORMAL)
+		good_odr = (odr > MSA311_ODR_1_95_HZ);
+	else
+		good_odr = false;
+
+	if (!good_odr) {
+		dev_err(dev,
+			"can't set odr %u.%06uHz, not available in %s mode\n",
+			msa311_odr_table[odr].integral,
+			msa311_odr_table[odr].microfract,
+			msa311_pwr_modes[pwr_mode]);
+		return -EINVAL;
+	}
+
+	return regmap_field_write(msa311->fields[F_ODR], odr);
+}
+
+/**
+ * msa311_wait_for_next_data() - Wait next accel data available after resume
+ * @msa311: MSA311 internal private state
+ *
+ * Return: 0 on success, -EINTR if msleep() was interrupted,
+ *         -ERRNO in other failures
+ */
+static int msa311_wait_for_next_data(struct msa311_priv *msa311)
+{
+	static const unsigned int unintr_thresh_ms = 20;
+	struct device *dev = msa311->dev;
+	unsigned long freq_uhz;
+	unsigned long wait_ms;
+	unsigned int odr;
+	int err;
+
+	err = msa311_get_odr(msa311, &odr);
+	if (err) {
+		dev_err(dev, "can't get actual frequency (%pe)\n",
+			ERR_PTR(err));
+		return err;
+	}
+
+	/*
+	 * After msa311 resuming is done, we need to wait for data
+	 * to be refreshed by accel logic.
+	 * A certain timeout is calculated based on the current ODR value.
+	 * If requested timeout isn't so long (let's assume 20ms),
+	 * we can wait for next data in uninterruptible sleep.
+	 */
+	freq_uhz = msa311_odr_table[odr].integral * MICROHZ_PER_HZ +
+		   msa311_odr_table[odr].microfract;
+	wait_ms = (MICROHZ_PER_HZ / freq_uhz) * MSEC_PER_SEC;
+
+	if (wait_ms < unintr_thresh_ms)
+		usleep_range(wait_ms * USEC_PER_MSEC,
+			     unintr_thresh_ms * USEC_PER_MSEC);
+	else if (msleep_interruptible(wait_ms))
+		return -EINTR;
+
+	return 0;
+}
+
+/**
+ * msa311_set_pwr_mode() - Install certain MSA311 power mode
+ * @msa311: MSA311 internal private state
+ * @mode: Power mode can be equal to NORMAL or SUSPEND
+ *
+ * This function should be called under msa311->lock.
+ *
+ * Return: 0 on success, -ERRNO on failure
+ */
+static int msa311_set_pwr_mode(struct msa311_priv *msa311, unsigned int mode)
+{
+	struct device *dev = msa311->dev;
+	unsigned int prev_mode;
+	int err;
+
+	if (mode >= ARRAY_SIZE(msa311_pwr_modes))
+		return -EINVAL;
+
+	dev_dbg(dev, "transition to %s mode\n", msa311_pwr_modes[mode]);
+
+	err = regmap_field_read(msa311->fields[F_PWR_MODE], &prev_mode);
+	if (err)
+		return err;
+
+	err = regmap_field_write(msa311->fields[F_PWR_MODE], mode);
+	if (err)
+		return err;
+
+	/* Wait actual data if we wake up */
+	if (prev_mode == MSA311_PWR_MODE_SUSPEND &&
+	    mode == MSA311_PWR_MODE_NORMAL)
+		return msa311_wait_for_next_data(msa311);
+
+	return 0;
+}
+
+/**
+ * msa311_get_axis() - Read MSA311 accel data for certain IIO channel axis spec
+ * @msa311: MSA311 internal private state
+ * @chan: IIO channel specification
+ * @axis: Output accel axis data for requested IIO channel spec
+ *
+ * This function should be called under msa311->lock.
+ *
+ * Return: 0 on success, -EINVAL for unknown IIO channel specification,
+ *         -ERRNO in other failures
+ */
+static int msa311_get_axis(struct msa311_priv *msa311,
+			   const struct iio_chan_spec * const chan,
+			   __le16 *axis)
+{
+	struct device *dev = msa311->dev;
+	unsigned int axis_reg;
+
+	if (chan->scan_index < MSA311_SI_X || chan->scan_index > MSA311_SI_Z) {
+		dev_err(dev, "invalid scan_index value [%d]\n",
+			chan->scan_index);
+		return -EINVAL;
+	}
+
+	/* Axes data layout has 2 byte gap for each axis starting from X axis */
+	axis_reg = MSA311_ACC_X_REG + (chan->scan_index << 1);
+
+	return regmap_bulk_read(msa311->regs, axis_reg, axis, sizeof(*axis));
+}
+
+static int msa311_read_raw_data(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	__le16 axis;
+	int err;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	err = iio_device_claim_direct_mode(indio_dev);
+	if (err)
+		return err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_get_axis(msa311, chan, &axis);
+	mutex_unlock(&msa311->lock);
+
+	iio_device_release_direct_mode(indio_dev);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err) {
+		dev_err(dev, "can't get axis %s (%pe)\n",
+			chan->datasheet_name, ERR_PTR(err));
+		return err;
+	}
+
+	/*
+	 * Axis data format is:
+	 * ACC_X = (ACC_X_MSB[7:0] << 4) | ACC_X_LSB[7:4]
+	 */
+	*val = sign_extend32(le16_to_cpu(axis) >> chan->scan_type.shift,
+			     chan->scan_type.realbits - 1);
+
+	return IIO_VAL_INT;
+}
+
+static int msa311_read_scale(struct iio_dev *indio_dev, int *val, int *val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int fs;
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = regmap_field_read(msa311->fields[F_FS], &fs);
+	mutex_unlock(&msa311->lock);
+	if (err) {
+		dev_err(dev, "can't get actual scale (%pe)\n", ERR_PTR(err));
+		return err;
+	}
+
+	*val = msa311_fs_table[fs].integral;
+	*val2 = msa311_fs_table[fs].microfract;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int msa311_read_samp_freq(struct iio_dev *indio_dev,
+				 int *val, int *val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int odr;
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_get_odr(msa311, &odr);
+	mutex_unlock(&msa311->lock);
+	if (err) {
+		dev_err(dev, "can't get actual frequency (%pe)\n",
+			ERR_PTR(err));
+		return err;
+	}
+
+	*val = msa311_odr_table[odr].integral;
+	*val2 = msa311_odr_table[odr].microfract;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int msa311_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return msa311_read_raw_data(indio_dev, chan, val, val2);
+
+	case IIO_CHAN_INFO_SCALE:
+		return msa311_read_scale(indio_dev, val, val2);
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return msa311_read_samp_freq(indio_dev, val, val2);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int msa311_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type,
+			     int *length, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (int *)msa311_odr_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* ODR value has 2 ints (integer and fractional parts) */
+		*length = ARRAY_SIZE(msa311_odr_table) * 2;
+		return IIO_AVAIL_LIST;
+
+	case IIO_CHAN_INFO_SCALE:
+		*vals = (int *)msa311_fs_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* FS value has 2 ints (integer and fractional parts) */
+		*length = ARRAY_SIZE(msa311_fs_table) * 2;
+		return IIO_AVAIL_LIST;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int msa311_write_scale(struct iio_dev *indio_dev, int val, int val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int fs;
+	int err;
+
+	/* We do not have fs >= 1, so skip such values */
+	if (val)
+		return 0;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	err = -EINVAL;
+	for (fs = 0; fs < ARRAY_SIZE(msa311_fs_table); fs++)
+		/* Do not check msa311_fs_table[fs].integral, it's always 0 */
+		if (val2 == msa311_fs_table[fs].microfract) {
+			mutex_lock(&msa311->lock);
+			err = regmap_field_write(msa311->fields[F_FS], fs);
+			mutex_unlock(&msa311->lock);
+			break;
+		}
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err)
+		dev_err(dev, "can't update scale (%pe)\n", ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_write_samp_freq(struct iio_dev *indio_dev, int val, int val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int odr;
+	int err;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	/*
+	 * Sampling frequency changing is prohibited when buffer mode is
+	 * enabled, because sometimes MSA311 chip returns outliers during
+	 * frequency values growing up in the read operation moment.
+	 */
+	err = iio_device_claim_direct_mode(indio_dev);
+	if (err)
+		return err;
+
+	err = -EINVAL;
+	for (odr = 0; odr < ARRAY_SIZE(msa311_odr_table); odr++)
+		if (val == msa311_odr_table[odr].integral &&
+		    val2 == msa311_odr_table[odr].microfract) {
+			mutex_lock(&msa311->lock);
+			err = msa311_set_odr(msa311, odr);
+			mutex_unlock(&msa311->lock);
+			break;
+		}
+
+	iio_device_release_direct_mode(indio_dev);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err)
+		dev_err(dev, "can't update frequency (%pe)\n", ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return msa311_write_scale(indio_dev, val, val2);
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return msa311_write_samp_freq(indio_dev, val, val2);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int msa311_debugfs_reg_access(struct iio_dev *indio_dev,
+				     unsigned int reg, unsigned int writeval,
+				     unsigned int *readval)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	int err;
+
+	if (reg > regmap_get_max_register(msa311->regs))
+		return -EINVAL;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	mutex_lock(&msa311->lock);
+
+	if (readval)
+		err = regmap_read(msa311->regs, reg, readval);
+	else
+		err = regmap_write(msa311->regs, reg, writeval);
+
+	mutex_unlock(&msa311->lock);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err)
+		dev_err(dev, "can't %s register %u from debugfs (%pe)\n",
+			str_read_write(readval), reg, ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_buffer_preenable(struct iio_dev *indio_dev)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+
+	return pm_runtime_resume_and_get(dev);
+}
+
+static int msa311_buffer_postdisable(struct iio_dev *indio_dev)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return 0;
+}
+
+static int msa311_set_new_data_trig_state(struct iio_trigger *trig, bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = regmap_field_write(msa311->fields[F_NEW_DATA_INT_EN], state);
+	mutex_unlock(&msa311->lock);
+	if (err)
+		dev_err(dev,
+			"can't %s buffer due to new_data_int failure (%pe)\n",
+			str_enable_disable(state), ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_validate_device(struct iio_trigger *trig,
+				  struct iio_dev *indio_dev)
+{
+	return iio_trigger_get_drvdata(trig) == indio_dev ? 0 : -EINVAL;
+}
+
+static irqreturn_t msa311_buffer_thread(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct msa311_priv *msa311 = iio_priv(pf->indio_dev);
+	struct iio_dev *indio_dev = pf->indio_dev;
+	const struct iio_chan_spec *chan;
+	struct device *dev = msa311->dev;
+	int bit, err, i = 0;
+	__le16 axis;
+	struct {
+		__le16 channels[MSA311_SI_Z + 1];
+		s64 ts __aligned(8);
+	} buf;
+
+	memset(&buf, 0, sizeof(buf));
+
+	mutex_lock(&msa311->lock);
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		chan = &msa311_channels[bit];
+
+		err = msa311_get_axis(msa311, chan, &axis);
+		if (err) {
+			mutex_unlock(&msa311->lock);
+			dev_err(dev, "can't get axis %s (%pe)\n",
+				chan->datasheet_name, ERR_PTR(err));
+			goto notify_done;
+		}
+
+		buf.channels[i++] = axis;
+	}
+
+	mutex_unlock(&msa311->lock);
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &buf,
+					   iio_get_time_ns(indio_dev));
+
+notify_done:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t msa311_irq_thread(int irq, void *p)
+{
+	struct msa311_priv *msa311 = iio_priv(p);
+	unsigned int new_data_int_enabled;
+	struct device *dev = msa311->dev;
+	int err;
+
+	mutex_lock(&msa311->lock);
+
+	/*
+	 * We do not check NEW_DATA int status, because based on the
+	 * specification it's cleared automatically after a fixed time.
+	 * So just check that is enabled by driver logic.
+	 */
+	err = regmap_field_read(msa311->fields[F_NEW_DATA_INT_EN],
+				&new_data_int_enabled);
+
+	mutex_unlock(&msa311->lock);
+	if (err) {
+		dev_err(dev, "can't read new_data interrupt state (%pe)\n",
+			ERR_PTR(err));
+		return IRQ_NONE;
+	}
+
+	if (new_data_int_enabled)
+		iio_trigger_poll_chained(msa311->new_data_trig);
+
+	return IRQ_HANDLED;
+}
+
+static const struct iio_info msa311_info = {
+	.read_raw = msa311_read_raw,
+	.read_avail = msa311_read_avail,
+	.write_raw = msa311_write_raw,
+	.debugfs_reg_access = msa311_debugfs_reg_access,
+};
+
+static const struct iio_buffer_setup_ops msa311_buffer_setup_ops = {
+	.preenable = msa311_buffer_preenable,
+	.postdisable = msa311_buffer_postdisable,
+};
+
+static const struct iio_trigger_ops msa311_new_data_trig_ops = {
+	.set_trigger_state = msa311_set_new_data_trig_state,
+	.validate_device = msa311_validate_device,
+};
+
+static int msa311_check_partid(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	unsigned int partid;
+	int err;
+
+	err = regmap_read(msa311->regs, MSA311_PARTID_REG, &partid);
+	if (err)
+		return dev_err_probe(dev, err, "failed to read partid\n");
+
+	if (partid != MSA311_WHO_AM_I)
+		dev_warn(dev, "invalid partid (%#x), expected (%#x)\n",
+			 partid, MSA311_WHO_AM_I);
+
+	msa311->chip_name = devm_kasprintf(dev, GFP_KERNEL,
+					   "msa311-%02x", partid);
+	if (!msa311->chip_name)
+		return dev_err_probe(dev, -ENOMEM, "can't alloc chip name\n");
+
+	return 0;
+}
+
+static int msa311_soft_reset(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	int err;
+
+	err = regmap_write(msa311->regs, MSA311_SOFT_RESET_REG,
+			   MSA311_GENMASK(F_SOFT_RESET_I2C) |
+			   MSA311_GENMASK(F_SOFT_RESET_SPI));
+	if (err)
+		return dev_err_probe(dev, err, "can't soft reset all logic\n");
+
+	return 0;
+}
+
+static int msa311_chip_init(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	const char zero_bulk[2] = { };
+	int err;
+
+	err = regmap_write(msa311->regs, MSA311_RANGE_REG, MSA311_FS_16G);
+	if (err)
+		return dev_err_probe(dev, err, "failed to setup accel range\n");
+
+	/* Disable all interrupts by default */
+	err = regmap_bulk_write(msa311->regs, MSA311_INT_SET_0_REG,
+				zero_bulk, sizeof(zero_bulk));
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't disable set0/set1 interrupts\n");
+
+	/* Unmap all INT1 interrupts by default */
+	err = regmap_bulk_write(msa311->regs, MSA311_INT_MAP_0_REG,
+				zero_bulk, sizeof(zero_bulk));
+	if (err)
+		return dev_err_probe(dev, err,
+				     "failed to unmap map0/map1 interrupts\n");
+
+	/* Disable all axes by default */
+	err = regmap_update_bits(msa311->regs, MSA311_ODR_REG,
+				 MSA311_GENMASK(F_X_AXIS_DIS) |
+				 MSA311_GENMASK(F_Y_AXIS_DIS) |
+				 MSA311_GENMASK(F_Z_AXIS_DIS), 0);
+	if (err)
+		return dev_err_probe(dev, err, "can't enable all axes\n");
+
+	err = msa311_set_odr(msa311, MSA311_ODR_125_HZ);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "failed to set accel frequency\n");
+
+	return 0;
+}
+
+static int msa311_setup_interrupts(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	struct i2c_client *i2c = to_i2c_client(dev);
+	struct iio_dev *indio_dev = i2c_get_clientdata(i2c);
+	struct iio_trigger *trig;
+	int err;
+
+	/* Keep going without interrupts if no initialized I2C IRQ */
+	if (i2c->irq <= 0)
+		return 0;
+
+	err = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
+					msa311_irq_thread, IRQF_ONESHOT,
+					msa311->chip_name, indio_dev);
+	if (err)
+		return dev_err_probe(dev, err, "failed to request IRQ\n");
+
+	trig = devm_iio_trigger_alloc(dev, "%s-new-data", msa311->chip_name);
+	if (!trig)
+		return dev_err_probe(dev, -ENOMEM,
+				     "can't allocate newdata trigger\n");
+
+	msa311->new_data_trig = trig;
+	msa311->new_data_trig->ops = &msa311_new_data_trig_ops;
+	iio_trigger_set_drvdata(msa311->new_data_trig, indio_dev);
+
+	err = devm_iio_trigger_register(dev, msa311->new_data_trig);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't register newdata trigger\n");
+
+	err = regmap_field_write(msa311->fields[F_INT1_OD],
+				 MSA311_INT1_OD_PUSH_PULL);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't enable push-pull interrupt\n");
+
+	err = regmap_field_write(msa311->fields[F_INT1_LVL],
+				 MSA311_INT1_LVL_HIGH);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't set active interrupt level\n");
+
+	err = regmap_field_write(msa311->fields[F_LATCH_INT],
+				 MSA311_LATCH_INT_LATCHED);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't latch interrupt\n");
+
+	err = regmap_field_write(msa311->fields[F_RESET_INT], 1);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't reset interrupt\n");
+
+	err = regmap_field_write(msa311->fields[F_INT1_NEW_DATA], 1);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't map new data interrupt\n");
+
+	return 0;
+}
+
+static int msa311_regmap_init(struct msa311_priv *msa311)
+{
+	struct regmap_field **fields = msa311->fields;
+	struct device *dev = msa311->dev;
+	struct i2c_client *i2c = to_i2c_client(dev);
+	struct regmap *regmap;
+	int i;
+
+	regmap = devm_regmap_init_i2c(i2c, &msa311_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap),
+				     "failed to register i2c regmap\n");
+
+	msa311->regs = regmap;
+
+	for (i = 0; i < F_MAX_FIELDS; i++) {
+		fields[i] = devm_regmap_field_alloc(dev,
+						    msa311->regs,
+						    msa311_reg_fields[i]);
+		if (IS_ERR(msa311->fields[i]))
+			return dev_err_probe(dev, PTR_ERR(msa311->fields[i]),
+					     "can't alloc field[%d]\n", i);
+	}
+
+	return 0;
+}
+
+static void msa311_powerdown(void *msa311)
+{
+	msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_SUSPEND);
+}
+
+static void msa311_vdd_disable(void *vdd)
+{
+	regulator_disable(vdd);
+}
+
+static int msa311_probe(struct i2c_client *i2c)
+{
+	struct device *dev = &i2c->dev;
+	struct msa311_priv *msa311;
+	struct iio_dev *indio_dev;
+	int err;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*msa311));
+	if (!indio_dev)
+		return dev_err_probe(dev, -ENOMEM,
+				     "IIO device allocation failed\n");
+
+	msa311 = iio_priv(indio_dev);
+	msa311->dev = dev;
+	i2c_set_clientdata(i2c, indio_dev);
+
+	err = msa311_regmap_init(msa311);
+	if (err)
+		return err;
+
+	mutex_init(&msa311->lock);
+
+	msa311->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(msa311->vdd))
+		return dev_err_probe(dev, PTR_ERR(msa311->vdd),
+				     "can't get vdd supply\n");
+
+	err = regulator_enable(msa311->vdd);
+	if (err)
+		return dev_err_probe(dev, err, "can't enable vdd supply\n");
+
+	err = devm_add_action_or_reset(dev, msa311_vdd_disable, msa311->vdd);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't add vdd disable action\n");
+
+	err = msa311_check_partid(msa311);
+	if (err)
+		return err;
+
+	err = msa311_soft_reset(msa311);
+	if (err)
+		return err;
+
+	err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_NORMAL);
+	if (err)
+		return dev_err_probe(dev, err, "failed to power on device\n");
+
+	/*
+	 * Register powerdown deferred callback which suspends the chip
+	 * after module unloaded.
+	 *
+	 * MSA311 should be in SUSPEND mode in the two cases:
+	 * 1) When driver is loaded, but we do not have any data or
+	 *    configuration requests to it (we are solving it using
+	 *    autosuspend feature).
+	 * 2) When driver is unloaded and device is not used (devm action is
+	 *    used in this case).
+	 */
+	err = devm_add_action_or_reset(dev, msa311_powerdown, msa311);
+	if (err)
+		return dev_err_probe(dev, err, "can't add powerdown action\n");
+
+	err = pm_runtime_set_active(dev);
+	if (err)
+		return err;
+
+	err = devm_pm_runtime_enable(dev);
+	if (err)
+		return err;
+
+	pm_runtime_get_noresume(dev);
+	pm_runtime_set_autosuspend_delay(dev, MSA311_PWR_SLEEP_DELAY_MS);
+	pm_runtime_use_autosuspend(dev);
+
+	err = msa311_chip_init(msa311);
+	if (err)
+		return err;
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = msa311_channels;
+	indio_dev->num_channels = ARRAY_SIZE(msa311_channels);
+	indio_dev->name = msa311->chip_name;
+	indio_dev->info = &msa311_info;
+
+	err = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					      iio_pollfunc_store_time,
+					      msa311_buffer_thread,
+					      &msa311_buffer_setup_ops);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't setup IIO trigger buffer\n");
+
+	err = msa311_setup_interrupts(msa311);
+	if (err)
+		return err;
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	err = devm_iio_device_register(dev, indio_dev);
+	if (err)
+		return dev_err_probe(dev, err, "IIO device register failed\n");
+
+	return 0;
+}
+
+static int msa311_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_SUSPEND);
+	mutex_unlock(&msa311->lock);
+	if (err)
+		dev_err(dev, "failed to power off device (%pe)\n",
+			ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_NORMAL);
+	mutex_unlock(&msa311->lock);
+	if (err)
+		dev_err(dev, "failed to power on device (%pe)\n",
+			ERR_PTR(err));
+
+	return err;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(msa311_pm_ops, msa311_runtime_suspend,
+				 msa311_runtime_resume, NULL);
+
+static const struct i2c_device_id msa311_i2c_id[] = {
+	{ .name = "msa311" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, msa311_i2c_id);
+
+static const struct of_device_id msa311_of_match[] = {
+	{ .compatible = "memsensing,msa311" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, msa311_of_match);
+
+static struct i2c_driver msa311_driver = {
+	.driver = {
+		.name = "msa311",
+		.of_match_table = msa311_of_match,
+		.pm = pm_ptr(&msa311_pm_ops),
+	},
+	.probe_new	= msa311_probe,
+	.id_table	= msa311_i2c_id,
+};
+module_i2c_driver(msa311_driver);
+
+MODULE_AUTHOR("Dmitry Rokosov <[e-mail]>");
+MODULE_DESCRIPTION("MEMSensing MSA311 3-axis accelerometer driver");
+MODULE_LICENSE("GPL");

drivers/iio/adc/Kconfig

···
 	  To compile this driver as a module, choose M here: the module will be
 	  called max1118.
 
+config MAX11205
+	tristate "Maxim max11205 ADC driver"
+	depends on SPI
+	select AD_SIGMA_DELTA
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+
+	help
+	  Say yes here to build support for Maxim max11205 16-bit, single-channel
+	  ultra-low power delta-sigma ADC.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called max11205.
+
 config MAX1241
 	tristate "Maxim max1241 ADC driver"
 	depends on SPI_MASTER
···
 	  To compile this driver as a module, choose M here: the
 	  module will be called rockchip_saradc.
 
+config RICHTEK_RTQ6056
+	tristate "Richtek RTQ6056 Current and Power Monitor ADC"
+	depends on I2C
+	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to enable RQT6056 ADC support.
+	  RTQ6056 is a high accuracy current-sense monitor with I2C and SMBus
+	  compatible interface, and the device provides full information for
+	  system by reading out the load current and power.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called rtq6056.
+
 config RZG2L_ADC
 	tristate "Renesas RZ/G2L ADC driver"
 	depends on ARCH_RZG2L || COMPILE_TEST
···
 	help
 	  Say yes here to build support for ST Microelectronics STMPE
 	  built-in ADC block (stmpe811).
-
-config STX104
-	tristate "Apex Embedded Systems STX104 driver"
-	depends on PC104 && X86
-	select ISA_BUS_API
-	select GPIOLIB
-	help
-	  Say yes here to build support for the Apex Embedded Systems STX104
-	  integrated analog PC/104 card.
-
-	  This driver supports the 16 channels of single-ended (8 channels of
-	  differential) analog inputs, 2 channels of analog output, 4 digital
-	  inputs, and 4 digital outputs provided by the STX104.
-
-	  The base port addresses for the devices may be configured via the base
-	  array module parameter.
 
 config SUN4I_GPADC
 	tristate "Support for the Allwinner SoCs GPADC"

drivers/iio/adc/Makefile

···
 obj-$(CONFIG_MAX1027) += max1027.o
 obj-$(CONFIG_MAX11100) += max11100.o
 obj-$(CONFIG_MAX1118) += max1118.o
+obj-$(CONFIG_MAX11205) += max11205.o
 obj-$(CONFIG_MAX1241) += max1241.o
 obj-$(CONFIG_MAX1363) += max1363.o
 obj-$(CONFIG_MAX9611) += max9611.o
···
 obj-$(CONFIG_RCAR_GYRO_ADC) += rcar-gyroadc.o
 obj-$(CONFIG_RN5T618_ADC) += rn5t618-adc.o
 obj-$(CONFIG_ROCKCHIP_SARADC) += rockchip_saradc.o
+obj-$(CONFIG_RICHTEK_RTQ6056) += rtq6056.o
 obj-$(CONFIG_RZG2L_ADC) += rzg2l_adc.o
 obj-$(CONFIG_SC27XX_ADC) += sc27xx_adc.o
 obj-$(CONFIG_SPEAR_ADC) += spear_adc.o
-obj-$(CONFIG_STX104) += stx104.o
 obj-$(CONFIG_SUN4I_GPADC) += sun4i-gpadc-iio.o
 obj-$(CONFIG_STM32_ADC_CORE) += stm32-adc-core.o
 obj-$(CONFIG_STM32_ADC) += stm32-adc.o

drivers/iio/adc/ab8500-gpadc.c

···
 	return -EINVAL;
 }
 
-static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev,
-				 const struct of_phandle_args *iiospec)
+static int ab8500_gpadc_fwnode_xlate(struct iio_dev *indio_dev,
+				     const struct fwnode_reference_args *iiospec)
 {
 	int i;
 
···
 }
 
 static const struct iio_info ab8500_gpadc_info = {
-	.of_xlate = ab8500_gpadc_of_xlate,
+	.fwnode_xlate = ab8500_gpadc_fwnode_xlate,
 	.read_raw = ab8500_gpadc_read_raw,
 };
 
···
 /**
  * ab8500_gpadc_parse_channel() - process devicetree channel configuration
  * @dev: pointer to containing device
- * @np: device tree node for the channel to configure
+ * @fwnode: fw node for the channel to configure
  * @ch: channel info to fill in
  * @iio_chan: IIO channel specification to fill in
  *
···
  * and define usage for things like AUX GPADC inputs more precisely.
  */
 static int ab8500_gpadc_parse_channel(struct device *dev,
-				      struct device_node *np,
+				      struct fwnode_handle *fwnode,
 				      struct ab8500_gpadc_chan_info *ch,
 				      struct iio_chan_spec *iio_chan)
 {
-	const char *name = np->name;
+	const char *name = fwnode_get_name(fwnode);
 	u32 chan;
 	int ret;
 
-	ret = of_property_read_u32(np, "reg", &chan);
+	ret = fwnode_property_read_u32(fwnode, "reg", &chan);
 	if (ret) {
 		dev_err(dev, "invalid channel number %s\n", name);
 		return ret;
···
 /**
  * ab8500_gpadc_parse_channels() - Parse the GPADC channels from DT
  * @gpadc: the GPADC to configure the channels for
- * @np: device tree node containing the channel configurations
  * @chans: the IIO channels we parsed
  * @nchans: the number of IIO channels we parsed
  */
 static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
-				       struct device_node *np,
 				       struct iio_chan_spec **chans_parsed,
 				       unsigned int *nchans_parsed)
 {
-	struct device_node *child;
+	struct fwnode_handle *child;
 	struct ab8500_gpadc_chan_info *ch;
 	struct iio_chan_spec *iio_chans;
 	unsigned int nchans;
 	int i;
 
-	nchans = of_get_available_child_count(np);
+	nchans = device_get_child_node_count(gpadc->dev);
 	if (!nchans) {
 		dev_err(gpadc->dev, "no channel children\n");
 		return -ENODEV;
···
 		return -ENOMEM;
 
 	i = 0;
-	for_each_available_child_of_node(np, child) {
+	device_for_each_child_node(gpadc->dev, child) {
 		struct iio_chan_spec *iio_chan;
 		int ret;
 
···
 		ret = ab8500_gpadc_parse_channel(gpadc->dev, child, ch,
 						 iio_chan);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 		i++;
···
 	struct ab8500_gpadc *gpadc;
 	struct iio_dev *indio_dev;
 	struct device *dev = &pdev->dev;
-	struct device_node *np = pdev->dev.of_node;
 	struct iio_chan_spec *iio_chans;
 	unsigned int n_iio_chans;
 	int ret;
···
 	gpadc->dev = dev;
 	gpadc->ab8500 = dev_get_drvdata(dev->parent);
 
-	ret = ab8500_gpadc_parse_channels(gpadc, np, &iio_chans, &n_iio_chans);
+	ret = ab8500_gpadc_parse_channels(gpadc, &iio_chans, &n_iio_chans);
 	if (ret)
 		return ret;
 

drivers/iio/adc/ad7124.c

···
 	regulator_disable(r);
 }
 
-static void ad7124_clk_disable(void *c)
-{
-	clk_disable_unprepare(c);
-}
-
 static int ad7124_probe(struct spi_device *spi)
 {
 	const struct ad7124_chip_info *info;
···
 			return ret;
 	}
 
-	st->mclk = devm_clk_get(&spi->dev, "mclk");
+	st->mclk = devm_clk_get_enabled(&spi->dev, "mclk");
 	if (IS_ERR(st->mclk))
 		return PTR_ERR(st->mclk);
-
-	ret = clk_prepare_enable(st->mclk);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, ad7124_clk_disable, st->mclk);
-	if (ret)
-		return ret;
 
 	ret = ad7124_soft_reset(st);
 	if (ret < 0)

drivers/iio/adc/ad7768-1.c

···
 	regulator_disable(st->vref);
 }
 
-static void ad7768_clk_disable(void *data)
-{
-	struct ad7768_state *st = data;
-
-	clk_disable_unprepare(st->mclk);
-}
-
 static int ad7768_set_channel_label(struct iio_dev *indio_dev,
 						int num_channels)
 {
···
 	if (ret)
 		return ret;
 
-	st->mclk = devm_clk_get(&spi->dev, "mclk");
+	st->mclk = devm_clk_get_enabled(&spi->dev, "mclk");
 	if (IS_ERR(st->mclk))
 		return PTR_ERR(st->mclk);
-
-	ret = clk_prepare_enable(st->mclk);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, ad7768_clk_disable, st);
-	if (ret)
-		return ret;
 
 	st->mclk_freq = clk_get_rate(st->mclk);
 

drivers/iio/adc/ad9467.c

···
 	return ad9467_outputmode_set(st->spi, st->output_mode);
 }
 
-static void ad9467_clk_disable(void *data)
-{
-	struct ad9467_state *st = data;
-
-	clk_disable_unprepare(st->clk);
-}
-
 static int ad9467_probe(struct spi_device *spi)
 {
 	const struct ad9467_chip_info *info;
···
 	st = adi_axi_adc_conv_priv(conv);
 	st->spi = spi;
 
-	st->clk = devm_clk_get(&spi->dev, "adc-clk");
+	st->clk = devm_clk_get_enabled(&spi->dev, "adc-clk");
 	if (IS_ERR(st->clk))
 		return PTR_ERR(st->clk);
-
-	ret = clk_prepare_enable(st->clk);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, ad9467_clk_disable, st);
-	if (ret)
-		return ret;
 
 	st->pwrdown_gpio = devm_gpiod_get_optional(&spi->dev, "powerdown",
 						   GPIOD_OUT_LOW);

drivers/iio/adc/at91-sama5d2_adc.c

···
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/sched.h>
+#include <linux/units.h>
 #include <linux/wait.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
···
 #include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
+#include <linux/nvmem-consumer.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
+
+#include <dt-bindings/iio/adc/at91-sama5d2_adc.h>
 
 struct at91_adc_reg_layout {
 /* Control Register */
···
 /* Startup Time */
 #define	AT91_SAMA5D2_MR_STARTUP(v)	((v) << 16)
 #define AT91_SAMA5D2_MR_STARTUP_MASK	GENMASK(19, 16)
+/* Minimum startup time for temperature sensor */
+#define AT91_SAMA5D2_MR_STARTUP_TS_MIN	(50)
 /* Analog Change */
 #define	AT91_SAMA5D2_MR_ANACH		BIT(23)
 /* Tracking Time */
 #define	AT91_SAMA5D2_MR_TRACKTIM(v)	((v) << 24)
-#define	AT91_SAMA5D2_MR_TRACKTIM_MAX	0xff
+#define	AT91_SAMA5D2_MR_TRACKTIM_TS	6
+#define	AT91_SAMA5D2_MR_TRACKTIM_MAX	0xf
 /* Transfer Time */
 #define	AT91_SAMA5D2_MR_TRANSFER(v)	((v) << 28)
 #define	AT91_SAMA5D2_MR_TRANSFER_MAX	0x3
···
 /* Extended Mode Register */
 	u16				EMR;
 /* Extended Mode Register - Oversampling rate */
-#define AT91_SAMA5D2_EMR_OSR(V)			((V) << 16)
-#define AT91_SAMA5D2_EMR_OSR_MASK		GENMASK(17, 16)
+#define AT91_SAMA5D2_EMR_OSR(V, M)		(((V) << 16) & (M))
 #define AT91_SAMA5D2_EMR_OSR_1SAMPLES		0
 #define AT91_SAMA5D2_EMR_OSR_4SAMPLES		1
 #define AT91_SAMA5D2_EMR_OSR_16SAMPLES		2
+#define AT91_SAMA5D2_EMR_OSR_64SAMPLES		3
+#define AT91_SAMA5D2_EMR_OSR_256SAMPLES		4
+
+/* Extended Mode Register - TRACKX */
+#define AT91_SAMA5D2_TRACKX_MASK		GENMASK(23, 22)
+#define AT91_SAMA5D2_TRACKX(x)			(((x) << 22) & \
+						 AT91_SAMA5D2_TRACKX_MASK)
+/* TRACKX for temperature sensor. */
+#define AT91_SAMA5D2_TRACKX_TS			(1)
 
 /* Extended Mode Register - Averaging on single trigger event */
 #define AT91_SAMA5D2_EMR_ASTE(V)		((V) << 20)
···
 	u16				ACR;
 /* Analog Control Register - Pen detect sensitivity mask */
 #define AT91_SAMA5D2_ACR_PENDETSENS_MASK        GENMASK(1, 0)
+/* Analog Control Register - Source last channel */
+#define AT91_SAMA5D2_ACR_SRCLCH		BIT(16)
 
 /* Touchscreen Mode Register */
 	u16				TSMR;
···
 	u16				WPSR;
 /* Version Register */
 	u16				VERSION;
+/* Temperature Sensor Mode Register */
+	u16				TEMPMR;
+/* Temperature Sensor Mode - Temperature sensor on */
+#define AT91_SAMA5D2_TEMPMR_TEMPON	BIT(0)
 };
 
 static const struct at91_adc_reg_layout sama5d2_layout = {
···
 	.EOC_IDR =		0x38,
 	.EOC_IMR =		0x3c,
 	.EOC_ISR =		0x40,
+	.TEMPMR =		0x44,
 	.OVER =			0x4c,
 	.EMR =			0x50,
 	.CWR =			0x54,
···
 #define AT91_HWFIFO_MAX_SIZE_STR	"128"
 #define AT91_HWFIFO_MAX_SIZE		128
 
-/* Possible values for oversampling ratio */
-#define AT91_OSR_1SAMPLES		1
-#define AT91_OSR_4SAMPLES		4
-#define AT91_OSR_16SAMPLES		16
-
 #define AT91_SAMA5D2_CHAN_SINGLE(index, num, addr)			\
 	{								\
 		.type = IIO_VOLTAGE,					\
···
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = "CH"#num,				\
 		.indexed = 1,						\
···
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = "CH"#num"-CH"#num2,			\
 		.indexed = 1,						\
 	}
···
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = name,					\
 	}
 #define AT91_SAMA5D2_CHAN_PRESSURE(num, name)				\
···
 		},							\
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.datasheet_name = name,					\
+	}
+
+#define AT91_SAMA5D2_CHAN_TEMP(num, name, addr)				\
+	{								\
+		.type = IIO_TEMP,					\
+		.channel = num,						\
+		.address =  addr,					\
+		.scan_index = num,					\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),	\
+		.info_mask_shared_by_all =				\
+				BIT(IIO_CHAN_INFO_PROCESSED) |		\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = name,					\
 	}
···
  * @max_index:		highest channel index (highest index may be higher
  *			than the total channel number)
  * @hw_trig_cnt:	number of possible hardware triggers
+ * @osr_mask:		oversampling ratio bitmask on EMR register
+ * @oversampling_avail:	available oversampling values
+ * @oversampling_avail_no: number of available oversampling values
+ * @chan_realbits:	realbits for registered channels
+ * @temp_chan:		temperature channel index
+ * @temp_sensor:	temperature sensor supported
  */
 struct at91_adc_platform {
 	const struct at91_adc_reg_layout	*layout;
···
 	unsigned int				max_channels;
 	unsigned int				max_index;
 	unsigned int				hw_trig_cnt;
+	unsigned int				osr_mask;
+	unsigned int				oversampling_avail[5];
+	unsigned int				oversampling_avail_no;
+	unsigned int				chan_realbits;
+	unsigned int				temp_chan;
+	bool					temp_sensor;
 };
+
+/**
+ * struct at91_adc_temp_sensor_clb - at91-sama5d2 temperature sensor
+ * calibration data structure
+ * @p1: P1 calibration temperature
+ * @p4: P4 calibration voltage
+ * @p6: P6 calibration voltage
+ */
+struct at91_adc_temp_sensor_clb {
+	u32 p1;
+	u32 p4;
+	u32 p6;
+};
+
+/**
+ * enum at91_adc_ts_clb_idx - calibration indexes in NVMEM buffer
+ * @AT91_ADC_TS_CLB_IDX_P1: index for P1
+ * @AT91_ADC_TS_CLB_IDX_P4: index for P4
+ * @AT91_ADC_TS_CLB_IDX_P6: index for P6
+ * @AT91_ADC_TS_CLB_IDX_MAX: max index for temperature calibration packet in OTP
+ */
+enum at91_adc_ts_clb_idx {
+	AT91_ADC_TS_CLB_IDX_P1 = 2,
+	AT91_ADC_TS_CLB_IDX_P4 = 5,
+	AT91_ADC_TS_CLB_IDX_P6 = 7,
+	AT91_ADC_TS_CLB_IDX_MAX = 19,
+};
+
+/* Temperature sensor calibration - Vtemp voltage sensitivity to temperature. */
+#define AT91_ADC_TS_VTEMP_DT		(2080U)
 
 /**
  * struct at91_adc_soc_info - at91-sama5d2 soc information struct
···
  * @min_sample_rate:	minimum sample rate in Hz
  * @max_sample_rate:	maximum sample rate in Hz
  * @platform:		pointer to the platform structure
+ * @temp_sensor_clb:	temperature sensor calibration data structure
  */
 struct at91_adc_soc_info {
 	unsigned			startup_time;
 	unsigned			min_sample_rate;
 	unsigned			max_sample_rate;
 	const struct at91_adc_platform	*platform;
+	struct at91_adc_temp_sensor_clb	temp_sensor_clb;
 };
 
 struct at91_adc_trigger {
···
 	struct work_struct		workq;
 };
 
+/**
+ * struct at91_adc_temp - at91-sama5d2 temperature information structure
+ * @sample_period_val:	sample period value
+ * @saved_sample_rate:	saved sample rate
+ * @saved_oversampling:	saved oversampling
+ */
+struct at91_adc_temp {
+	u16				sample_period_val;
+	u16				saved_sample_rate;
+	u16				saved_oversampling;
+};
+
 /*
  * Buffer size requirements:
  * No channels * bytes_per_channel(2) + timestamp bytes (8)
···
 	wait_queue_head_t		wq_data_available;
 	struct at91_adc_dma		dma_st;
 	struct at91_adc_touch		touch_st;
+	struct at91_adc_temp		temp_st;
 	struct iio_dev			*indio_dev;
+	struct device			*dev;
 	/* Ensure naturally aligned timestamp */
 	u16				buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8);
 	/*
···
 	AT91_SAMA5D2_CHAN_DIFF(22, 12, 13, 0x90),
 	AT91_SAMA5D2_CHAN_DIFF(23, 14, 15, 0x98),
 	IIO_CHAN_SOFT_TIMESTAMP(24),
+	AT91_SAMA5D2_CHAN_TEMP(AT91_SAMA7G5_ADC_TEMP_CHANNEL, "temp", 0xdc),
 };
 
 static const struct at91_adc_platform sama5d2_platform = {
···
 	.max_index = AT91_SAMA5D2_MAX_CHAN_IDX,
 #define AT91_SAMA5D2_HW_TRIG_CNT	3
 	.hw_trig_cnt = AT91_SAMA5D2_HW_TRIG_CNT,
+	.osr_mask = GENMASK(17, 16),
+	.oversampling_avail = { 1, 4, 16, },
+	.oversampling_avail_no = 3,
+	.chan_realbits = 14,
 };
 
 static const struct at91_adc_platform sama7g5_platform = {
···
 	.adc_channels = &at91_sama7g5_adc_channels,
 #define AT91_SAMA7G5_SINGLE_CHAN_CNT	16
 #define AT91_SAMA7G5_DIFF_CHAN_CNT	8
+#define AT91_SAMA7G5_TEMP_CHAN_CNT	1
 	.nr_channels = AT91_SAMA7G5_SINGLE_CHAN_CNT +
-		       AT91_SAMA7G5_DIFF_CHAN_CNT,
+		       AT91_SAMA7G5_DIFF_CHAN_CNT +
+		       AT91_SAMA7G5_TEMP_CHAN_CNT,
 #define AT91_SAMA7G5_MAX_CHAN_IDX	(AT91_SAMA7G5_SINGLE_CHAN_CNT + \
-					AT91_SAMA7G5_DIFF_CHAN_CNT)
+					AT91_SAMA7G5_DIFF_CHAN_CNT + \
+					AT91_SAMA7G5_TEMP_CHAN_CNT)
 	.max_channels = ARRAY_SIZE(at91_sama7g5_adc_channels),
 	.max_index = AT91_SAMA7G5_MAX_CHAN_IDX,
 #define AT91_SAMA7G5_HW_TRIG_CNT	3
 	.hw_trig_cnt = AT91_SAMA7G5_HW_TRIG_CNT,
+	.osr_mask = GENMASK(18, 16),
+	.oversampling_avail = { 1, 4, 16, 64, 256, },
+	.oversampling_avail_no = 5,
+	.chan_realbits = 16,
+	.temp_sensor = true,
+	.temp_chan = AT91_SAMA7G5_ADC_TEMP_CHANNEL,
 };
 
 static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan)
···
 	return indio_dev->channels + index;
 }
 
-static inline int at91_adc_of_xlate(struct iio_dev *indio_dev,
-				    const struct of_phandle_args *iiospec)
+static inline int at91_adc_fwnode_xlate(struct iio_dev *indio_dev,
+					const struct fwnode_reference_args *iiospec)
 {
 	return at91_adc_chan_xlate(indio_dev, iiospec->args[0]);
 }
···
 		at91_adc_writel(st, EOC_IER, BIT(channel));
 }
 
-static void at91_adc_config_emr(struct at91_adc_state *st)
+static int at91_adc_config_emr(struct at91_adc_state *st,
+			       u32 oversampling_ratio, u32 trackx)
 {
 	/* configure the extended mode register */
-	unsigned int emr = at91_adc_readl(st, EMR);
+	unsigned int emr, osr;
+	unsigned int osr_mask = st->soc_info.platform->osr_mask;
+	int i, ret;
 
-	/* select oversampling per single trigger event */
-	emr |= AT91_SAMA5D2_EMR_ASTE(1);
-
-	/* delete leftover content if it's the case */
-	emr &= ~AT91_SAMA5D2_EMR_OSR_MASK;
+	/* Check against supported oversampling values. */
+	for (i = 0; i < st->soc_info.platform->oversampling_avail_no; i++) {
+		if (oversampling_ratio == st->soc_info.platform->oversampling_avail[i])
+			break;
+	}
+	if (i == st->soc_info.platform->oversampling_avail_no)
+		return -EINVAL;
 
 	/* select oversampling ratio from configuration */
-	switch (st->oversampling_ratio) {
-	case AT91_OSR_1SAMPLES:
-		emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES) &
-		       AT91_SAMA5D2_EMR_OSR_MASK;
+	switch (oversampling_ratio) {
+	case 1:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES,
+					   osr_mask);
 		break;
-	case AT91_OSR_4SAMPLES:
-		emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES) &
-		       AT91_SAMA5D2_EMR_OSR_MASK;
+	case 4:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES,
+					   osr_mask);
 		break;
-	case AT91_OSR_16SAMPLES:
-		emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES) &
-		       AT91_SAMA5D2_EMR_OSR_MASK;
+	case 16:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES,
+					   osr_mask);
+		break;
+	case 64:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_64SAMPLES,
+					   osr_mask);
+		break;
+	case 256:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_256SAMPLES,
+					   osr_mask);
 		break;
 	}
 
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
+	emr = at91_adc_readl(st, EMR);
+	/* select oversampling per single trigger event */
+	emr |= AT91_SAMA5D2_EMR_ASTE(1);
+	/* delete leftover content if it's the case */
+	emr &= ~(osr_mask | AT91_SAMA5D2_TRACKX_MASK);
+	/* Update osr and trackx. */
+	emr |= osr | AT91_SAMA5D2_TRACKX(trackx);
 	at91_adc_writel(st, EMR, emr);
+
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
+	st->oversampling_ratio = oversampling_ratio;
+
+	return 0;
 }
 
 static int at91_adc_adjust_val_osr(struct at91_adc_state *st, int *val)
 {
-	if (st->oversampling_ratio == AT91_OSR_1SAMPLES) {
-		/*
-		 * in this case we only have 12 bits of real data, but channel
-		 * is registered as 14 bits, so shift left two bits
-		 */
-		*val <<= 2;
-	} else if (st->oversampling_ratio == AT91_OSR_4SAMPLES) {
-		/*
-		 * in this case we have 13 bits of real data, but channel
-		 * is registered as 14 bits, so left shift one bit
-		 */
-		*val <<= 1;
-	}
+	int nbits, diff;
+
+	if (st->oversampling_ratio == 1)
+		nbits = 12;
+	else if (st->oversampling_ratio == 4)
+		nbits = 13;
+	else if (st->oversampling_ratio == 16)
+		nbits = 14;
+	else if (st->oversampling_ratio == 64)
+		nbits = 15;
+	else if (st->oversampling_ratio == 256)
+		nbits = 16;
+	else
+		/* Should not happen. */
+		return -EINVAL;
+
+	/*
+	 * We have nbits of real data and channel is registered as
+	 * st->soc_info.platform->chan_realbits, so shift left diff bits.
+	 */
+	diff = st->soc_info.platform->chan_realbits - nbits;
+	*val <<= diff;
 
 	return IIO_VAL_INT;
 }
···
 static int at91_adc_configure_touch(struct at91_adc_state *st, bool state)
 {
 	u32 clk_khz = st->current_sample_rate / 1000;
-	int i = 0;
+	int i = 0, ret;
 	u16 pendbc;
 	u32 tsmr, acr;
 
-	if (!state) {
+	if (state) {
+		ret = pm_runtime_resume_and_get(st->dev);
+		if (ret < 0)
+			return ret;
+	} else {
 		/* disabling touch IRQs and setting mode to no touch enabled */
 		at91_adc_writel(st, IDR,
 				AT91_SAMA5D2_IER_PEN | AT91_SAMA5D2_IER_NOPEN);
 		at91_adc_writel(st, TSMR, 0);
+
+		pm_runtime_mark_last_busy(st->dev);
+		pm_runtime_put_autosuspend(st->dev);
 		return 0;
 	}
 	/*
···
 	return IIO_VAL_INT;
 }
 
-static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
+static void at91_adc_configure_trigger_registers(struct at91_adc_state *st,
+						 bool state)
 {
-	struct iio_dev *indio = iio_trigger_get_drvdata(trig);
-	struct at91_adc_state *st = iio_priv(indio);
 	u32 status = at91_adc_readl(st, TRGR);
 
 	/* clear TRGMOD */
···
 
 	/* set/unset hw trigger */
 	at91_adc_writel(st, TRGR, status);
+}
+
+static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
+{
+	struct iio_dev *indio = iio_trigger_get_drvdata(trig);
+	struct at91_adc_state *st = iio_priv(indio);
+	int ret;
+
+	if (state) {
+		ret = pm_runtime_resume_and_get(st->dev);
+		if (ret < 0)
+			return ret;
+	}
+
+	at91_adc_configure_trigger_registers(st, state);
+
+	if (!state) {
+		pm_runtime_mark_last_busy(st->dev);
+		pm_runtime_put_autosuspend(st->dev);
+	}
 
 	return 0;
 }
···
 	if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES))
 		return -EINVAL;
 
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
 	/* we continue with the triggered buffer */
 	ret = at91_adc_dma_start(indio_dev);
 	if (ret) {
 		dev_err(&indio_dev->dev, "buffer prepare failed\n");
-		return ret;
+		goto pm_runtime_put;
 	}
 
 	for_each_set_bit(bit, indio_dev->active_scan_mask,
···
 			continue;
 		/* these channel types cannot be handled by this trigger */
 		if (chan->type == IIO_POSITIONRELATIVE ||
-		    chan->type == IIO_PRESSURE)
+		    chan->type == IIO_PRESSURE ||
+		    chan->type == IIO_TEMP)
 			continue;
 
 		at91_adc_cor(st, chan);
···
 	if (at91_adc_buffer_check_use_irq(indio_dev, st))
 		at91_adc_writel(st, IER, AT91_SAMA5D2_IER_DRDY);
 
-	return 0;
+pm_runtime_put:
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+	return ret;
 }
 
 static int at91_adc_buffer_postdisable(struct iio_dev *indio_dev)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
 	u8 bit;
 
 	/* check if we are disabling triggered buffer or the touchscreen */
···
 	/* if we are not in triggered mode, nothing to do here */
 	if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES))
 		return -EINVAL;
+
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
 
 	/*
 	 * For each enable channel we must disable it in hardware.
···
 			continue;
 		/* these channel types are virtual, no need to do anything */
 		if (chan->type == IIO_POSITIONRELATIVE ||
-		    chan->type == IIO_PRESSURE)
+		    chan->type == IIO_PRESSURE ||
+		    chan->type == IIO_TEMP)
 			continue;
 
 		at91_adc_writel(st, CHDR, BIT(chan->channel));
···
 	/* if we are using DMA we must clear registers and end DMA */
 	if (st->dma_st.dma_chan)
 		dmaengine_terminate_sync(st->dma_st.dma_chan);
+
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
 
 	return 0;
 }
···
 
 	return trig;
 }
+
 static void at91_adc_trigger_handler_nodma(struct iio_dev *indio_dev,
 					   struct iio_poll_func *pf)
 {
···
 	return i;
 }
 
-static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq)
+static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq,
+				     unsigned int startup_time,
+				     unsigned int tracktim)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
 	unsigned f_per, prescal, startup, mr;
+	int ret;
 
 	f_per = clk_get_rate(st->per_clk);
 	prescal = (f_per / (2 * freq)) - 1;
 
-	startup = at91_adc_startup_time(st->soc_info.startup_time,
-					freq / 1000);
+	startup = at91_adc_startup_time(startup_time, freq / 1000);
+
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return;
 
 	mr = at91_adc_readl(st, MR);
 	mr &= ~(AT91_SAMA5D2_MR_STARTUP_MASK | AT91_SAMA5D2_MR_PRESCAL_MASK);
 	mr |= AT91_SAMA5D2_MR_STARTUP(startup);
 	mr |= AT91_SAMA5D2_MR_PRESCAL(prescal);
+	mr |= AT91_SAMA5D2_MR_TRACKTIM(tracktim);
 	at91_adc_writel(st, MR, mr);
 
-	dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u\n",
-		freq, startup, prescal);
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
+	dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u, tracktim=%u\n",
+		freq, startup, prescal, tracktim);
 	st->current_sample_rate = freq;
 }
 
···
 	return IRQ_HANDLED;
 }
 
+/* This needs to be called with direct mode claimed and st->lock locked. */
 static int at91_adc_read_info_raw(struct iio_dev *indio_dev,
 				  struct iio_chan_spec const *chan, int *val)
 {
···
 	u16 tmp_val;
 	int ret;
 
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
 	/*
 	 * Keep in mind that we cannot use software trigger or touchscreen
 	 * if external trigger is enabled
 	 */
 	if (chan->type == IIO_POSITIONRELATIVE) {
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
-		mutex_lock(&st->lock);
-
 		ret = at91_adc_read_position(st, chan->channel,
 					     &tmp_val);
 		*val = tmp_val;
-		mutex_unlock(&st->lock);
-		iio_device_release_direct_mode(indio_dev);
+		if (ret > 0)
+			ret = at91_adc_adjust_val_osr(st, val);
 
-		return at91_adc_adjust_val_osr(st, val);
+		goto pm_runtime_put;
 	}
 	if (chan->type == IIO_PRESSURE) {
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
-		mutex_lock(&st->lock);
-
 		ret = at91_adc_read_pressure(st, chan->channel,
 					     &tmp_val);
 		*val = tmp_val;
-		mutex_unlock(&st->lock);
-		iio_device_release_direct_mode(indio_dev);
+		if (ret > 0)
+			ret = at91_adc_adjust_val_osr(st, val);
 
-		return at91_adc_adjust_val_osr(st, val);
+		goto pm_runtime_put;
 	}
 
-	/* in this case we have a voltage channel */
-
-	ret = iio_device_claim_direct_mode(indio_dev);
-	if (ret)
-		return ret;
-	mutex_lock(&st->lock);
+	/* in this case we have a voltage or temperature channel */
 
 	st->chan = chan;
 
 	at91_adc_cor(st, chan);
 	at91_adc_writel(st, CHER, BIT(chan->channel));
+	/*
+	 * TEMPMR.TEMPON needs to update after CHER otherwise if none
+	 * of the channels are enabled and TEMPMR.TEMPON = 1 will
+	 * trigger DRDY interruption while preparing for temperature read.
+	 */
+	if (chan->type == IIO_TEMP)
+		at91_adc_writel(st, TEMPMR, AT91_SAMA5D2_TEMPMR_TEMPON);
 	at91_adc_eoc_ena(st, chan->channel);
 	at91_adc_writel(st, CR, AT91_SAMA5D2_CR_START);
 
···
 	}
 
 	at91_adc_eoc_dis(st, st->chan->channel);
+	if (chan->type == IIO_TEMP)
+		at91_adc_writel(st, TEMPMR, 0U);
 	at91_adc_writel(st, CHDR, BIT(chan->channel));
 
 	/* Needed to ACK the DRDY interruption */
 	at91_adc_readl(st, LCDR);
 
+pm_runtime_put:
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+	return ret;
+}
+
+static int at91_adc_read_info_locked(struct iio_dev *indio_dev,
+				     struct iio_chan_spec const *chan, int *val)
+{
+	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+	ret = at91_adc_read_info_raw(indio_dev, chan, val);
 	mutex_unlock(&st->lock);
 
 	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static void at91_adc_temp_sensor_configure(struct at91_adc_state *st,
+					   bool start)
+{
+	u32 sample_rate, oversampling_ratio;
+	u32 startup_time, tracktim, trackx;
+
+	if (start) {
+		/*
+		 * Configure the sensor for best accuracy: 10MHz frequency,
+		 * oversampling rate of 256, tracktim=0xf and trackx=1.
+		 */
+		sample_rate = 10 * MEGA;
+		oversampling_ratio = 256;
+		startup_time = AT91_SAMA5D2_MR_STARTUP_TS_MIN;
+		tracktim = AT91_SAMA5D2_MR_TRACKTIM_TS;
+		trackx = AT91_SAMA5D2_TRACKX_TS;
+
+		st->temp_st.saved_sample_rate = st->current_sample_rate;
+		st->temp_st.saved_oversampling = st->oversampling_ratio;
+	} else {
+		/* Go back to previous settings. */
+		sample_rate = st->temp_st.saved_sample_rate;
+		oversampling_ratio = st->temp_st.saved_oversampling;
+		startup_time = st->soc_info.startup_time;
+		tracktim = 0;
+		trackx = 0;
+	}
+
+	at91_adc_setup_samp_freq(st->indio_dev, sample_rate, startup_time,
+				 tracktim);
+	at91_adc_config_emr(st, oversampling_ratio, trackx);
+}
+
+static int at91_adc_read_temp(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan, int *val)
+{
+	struct at91_adc_state *st = iio_priv(indio_dev);
+	struct at91_adc_temp_sensor_clb *clb = &st->soc_info.temp_sensor_clb;
+	u64 div1, div2;
+	u32 tmp;
+	int ret, vbg, vtemp;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+	mutex_lock(&st->lock);
+
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		goto unlock;
+
+	at91_adc_temp_sensor_configure(st, true);
+
+	/* Read VBG. */
+	tmp = at91_adc_readl(st, ACR);
+	tmp |= AT91_SAMA5D2_ACR_SRCLCH;
+	at91_adc_writel(st, ACR, tmp);
+	ret = at91_adc_read_info_raw(indio_dev, chan, &vbg);
+	if (ret < 0)
+		goto restore_config;
+
+	/* Read VTEMP. */
+	tmp &= ~AT91_SAMA5D2_ACR_SRCLCH;
+	at91_adc_writel(st, ACR, tmp);
+	ret = at91_adc_read_info_raw(indio_dev, chan, &vtemp);
+
+restore_config:
+	/* Revert previous settings. */
+	at91_adc_temp_sensor_configure(st, false);
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+unlock:
+	mutex_unlock(&st->lock);
+	iio_device_release_direct_mode(indio_dev);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Temp[milli] = p1[milli] + (vtemp * clb->p6 - clb->p4 * vbg)/
+	 *			     (vbg * AT91_ADC_TS_VTEMP_DT)
+	 */
+	div1 = DIV_ROUND_CLOSEST_ULL(((u64)vtemp * clb->p6), vbg);
+	div1 = DIV_ROUND_CLOSEST_ULL((div1 * 1000), AT91_ADC_TS_VTEMP_DT);
+	div2 = DIV_ROUND_CLOSEST_ULL((u64)clb->p4, AT91_ADC_TS_VTEMP_DT);
+	div2 *= 1000;
+	*val = clb->p1 + (int)div1 - (int)div2;
+
 	return ret;
 }
 
···
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		return at91_adc_read_info_raw(indio_dev, chan, val);
+		return at91_adc_read_info_locked(indio_dev, chan, val);
+
 	case IIO_CHAN_INFO_SCALE:
 		*val = st->vref_uv / 1000;
 		if (chan->differential)
 			*val *= 2;
 		*val2 = chan->scan_type.realbits;
 		return IIO_VAL_FRACTIONAL_LOG2;
+
+	case IIO_CHAN_INFO_PROCESSED:
+		if (chan->type != IIO_TEMP)
+			return -EINVAL;
+		return at91_adc_read_temp(indio_dev, chan, val);
 
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		*val = at91_adc_get_sample_freq(st);
···
 			      int val, int val2, long mask)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
-		if ((val != AT91_OSR_1SAMPLES) && (val != AT91_OSR_4SAMPLES) &&
-		    (val != AT91_OSR_16SAMPLES))
-			return -EINVAL;
 		/* if no change, optimize out */
 		if (val == st->oversampling_ratio)
 			return 0;
-		st->oversampling_ratio = val;
+
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		mutex_lock(&st->lock);
 		/* update ratio */
-		at91_adc_config_emr(st);
-		return 0;
+		ret = at91_adc_config_emr(st, val, 0);
+		mutex_unlock(&st->lock);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val < st->soc_info.min_sample_rate ||
 		    val > st->soc_info.max_sample_rate)
 			return -EINVAL;
 
-		at91_adc_setup_samp_freq(indio_dev, val);
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		mutex_lock(&st->lock);
+		at91_adc_setup_samp_freq(indio_dev, val,
+					 st->soc_info.startup_time, 0);
+		mutex_unlock(&st->lock);
+		iio_device_release_direct_mode(indio_dev);
 		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int at91_adc_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*vals = (int *)st->soc_info.platform->oversampling_avail;
+		*type = IIO_VAL_INT;
+		*length = st->soc_info.platform->oversampling_avail_no;
+		return IIO_AVAIL_LIST;
 	default:
 		return -EINVAL;
 	}
···
 	at91_adc_writel(st, MR,
 			AT91_SAMA5D2_MR_TRANSFER(2) | AT91_SAMA5D2_MR_ANACH);
 
-	at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate);
+	at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate,
+				 st->soc_info.startup_time, 0);
 
 	/* configure extended mode register */
-	at91_adc_config_emr(st);
+	at91_adc_config_emr(st, st->oversampling_ratio, 0);
 }
 
 static ssize_t at91_adc_get_fifo_state(struct device *dev,
···
 static IIO_CONST_ATTR(hwfifo_watermark_min, "2");
 static IIO_CONST_ATTR(hwfifo_watermark_max, AT91_HWFIFO_MAX_SIZE_STR);
 
-static IIO_CONST_ATTR(oversampling_ratio_available,
-		      __stringify(AT91_OSR_1SAMPLES) " "
-		      __stringify(AT91_OSR_4SAMPLES) " "
-		      __stringify(AT91_OSR_16SAMPLES));
-
-static struct attribute *at91_adc_attributes[] = {
-	&iio_const_attr_oversampling_ratio_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group at91_adc_attribute_group = {
-	.attrs = at91_adc_attributes,
-};
-
 static const struct attribute *at91_adc_fifo_attributes[] = {
 	&iio_const_attr_hwfifo_watermark_min.dev_attr.attr,
 	&iio_const_attr_hwfifo_watermark_max.dev_attr.attr,
···
 };
 
 static const struct iio_info at91_adc_info = {
-	.attrs = &at91_adc_attribute_group,
+	.read_avail = &at91_adc_read_avail,
 	.read_raw = &at91_adc_read_raw,
 	.write_raw = &at91_adc_write_raw,
 	.update_scan_mode = &at91_adc_update_scan_mode,
-	.of_xlate = &at91_adc_of_xlate,
+	.fwnode_xlate = &at91_adc_fwnode_xlate,
 	.hwfifo_set_watermark = &at91_adc_set_watermark,
 };
 
···
 	return 0;
 }
 
+static int at91_adc_temp_sensor_init(struct at91_adc_state *st,
+				     struct device *dev)
+{
+	struct at91_adc_temp_sensor_clb *clb = &st->soc_info.temp_sensor_clb;
+	struct nvmem_cell *temp_calib;
+	u32 *buf;
+	size_t len;
+	int ret = 0;
+
+	if (!st->soc_info.platform->temp_sensor)
+		return 0;
+
+	/* Get the calibration data from NVMEM. */
+	temp_calib = devm_nvmem_cell_get(dev, "temperature_calib");
+	if (IS_ERR(temp_calib)) {
+		ret = PTR_ERR(temp_calib);
+		if (ret != -ENOENT)
+			dev_err(dev, "Failed to get temperature_calib cell!\n");
+		return ret;
+	}
+
+	buf = nvmem_cell_read(temp_calib, &len);
+	if (IS_ERR(buf)) {
+		dev_err(dev, "Failed to read calibration data!\n");
+		return PTR_ERR(buf);
+	}
+	if (len < AT91_ADC_TS_CLB_IDX_MAX * 4) {
+		dev_err(dev, "Invalid calibration data!\n");
+		ret = -EINVAL;
+		goto free_buf;
+	}
+
+	/* Store calibration data for later use. */
+	clb->p1 = buf[AT91_ADC_TS_CLB_IDX_P1];
+	clb->p4 = buf[AT91_ADC_TS_CLB_IDX_P4];
+	clb->p6 = buf[AT91_ADC_TS_CLB_IDX_P6];
+
+	/*
+	 * We prepare here the conversion to milli and also add constant
+	 * factor (5 degrees Celsius) to p1 here to avoid doing it on
+	 * hotpath.
+	 */
+	clb->p1 = clb->p1 * 1000 + 5000;
+
+free_buf:
+	kfree(buf);
+	return ret;
+}
+
 static int at91_adc_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	struct at91_adc_state *st;
 	struct resource	*res;
-	int ret, i;
+	int ret, i, num_channels;
 	u32 edge_type = IRQ_TYPE_NONE;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st));
···
 	st = iio_priv(indio_dev);
 	st->indio_dev = indio_dev;
 
-	st->soc_info.platform = of_device_get_match_data(&pdev->dev);
+	st->soc_info.platform = device_get_match_data(dev);
+
+	ret = at91_adc_temp_sensor_init(st, &pdev->dev);
+	/* Don't register temperature channel if initialization failed. */
+	if (ret)
+		num_channels = st->soc_info.platform->max_channels - 1;
+	else
+		num_channels = st->soc_info.platform->max_channels;
 
 	indio_dev->name = dev_name(&pdev->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
 	indio_dev->info = &at91_adc_info;
 	indio_dev->channels = *st->soc_info.platform->adc_channels;
-	indio_dev->num_channels = st->soc_info.platform->max_channels;
+	indio_dev->num_channels = num_channels;
 
 	bitmap_set(&st->touch_st.channels_bitmask,
 		   st->soc_info.platform->touch_chan_x, 1);
···
 	bitmap_set(&st->touch_st.channels_bitmask,
 		   st->soc_info.platform->touch_chan_p, 1);
 
-	st->oversampling_ratio = AT91_OSR_1SAMPLES;
+	st->oversampling_ratio = 1;
 
-	ret = of_property_read_u32(pdev->dev.of_node,
-				   "atmel,min-sample-rate-hz",
-				   &st->soc_info.min_sample_rate);
+	ret = device_property_read_u32(dev, "atmel,min-sample-rate-hz",
+				       &st->soc_info.min_sample_rate);
 	if (ret) {
 		dev_err(&pdev->dev,
 			"invalid or missing value for atmel,min-sample-rate-hz\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(pdev->dev.of_node,
-				   "atmel,max-sample-rate-hz",
-				   &st->soc_info.max_sample_rate);
+	ret = device_property_read_u32(dev, "atmel,max-sample-rate-hz",
+				       &st->soc_info.max_sample_rate);
 	if (ret) {
 		dev_err(&pdev->dev,
 			"invalid or missing value for atmel,max-sample-rate-hz\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(pdev->dev.of_node, "atmel,startup-time-ms",
-				   &st->soc_info.startup_time);
+	ret = device_property_read_u32(dev, "atmel,startup-time-ms",
+				       &st->soc_info.startup_time);
 	if (ret) {
 		dev_err(&pdev->dev,
 			"invalid or missing value for atmel,startup-time-ms\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(pdev->dev.of_node,
-				   "atmel,trigger-edge-type", &edge_type);
+	ret = device_property_read_u32(dev, "atmel,trigger-edge-type",
+				       &edge_type);
 	if (ret) {
 		dev_dbg(&pdev->dev,
 			"atmel,trigger-edge-type not specified, only software trigger available\n");
···
 	if (ret)
 		goto vref_disable;
 
-	at91_adc_hw_init(indio_dev);
-
 	platform_set_drvdata(pdev, indio_dev);
+	st->dev = &pdev->dev;
+	pm_runtime_set_autosuspend_delay(st->dev, 500);
+	pm_runtime_use_autosuspend(st->dev);
+	pm_runtime_set_active(st->dev);
+	pm_runtime_enable(st->dev);
+	pm_runtime_get_noresume(st->dev);
+
+	at91_adc_hw_init(indio_dev);
 
 	ret = at91_adc_buffer_and_trigger_init(&pdev->dev, indio_dev);
 	if (ret < 0)
-		goto per_clk_disable_unprepare;
+		goto err_pm_disable;
 
 	if (dma_coerce_mask_and_coherent(&indio_dev->dev, DMA_BIT_MASK(32)))
 		dev_info(&pdev->dev, "cannot set DMA mask to 32-bit\n");
···
 	dev_info(&pdev->dev, "version: %x\n",
 		 readl_relaxed(st->base + st->soc_info.platform->layout->VERSION));
 
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
 	return 0;
 
 dma_disable:
 	at91_adc_dma_disable(st);
-per_clk_disable_unprepare:
+err_pm_disable:
+	pm_runtime_put_noidle(st->dev);
+	pm_runtime_disable(st->dev);
+	pm_runtime_set_suspended(st->dev);
+	pm_runtime_dont_use_autosuspend(st->dev);
 	clk_disable_unprepare(st->per_clk);
 vref_disable:
 	regulator_disable(st->vref);
···
 
 	at91_adc_dma_disable(st);
 
+	pm_runtime_disable(st->dev);
+	pm_runtime_set_suspended(st->dev);
 	clk_disable_unprepare(st->per_clk);
 
 	regulator_disable(st->vref);
···
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
+
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
+	if (iio_buffer_enabled(indio_dev))
+		at91_adc_buffer_postdisable(indio_dev);
 
 	/*
 	 * Do a sofware reset of the ADC before we go to suspend.
···
 	 */
 	at91_adc_writel(st, CR, AT91_SAMA5D2_CR_SWRST);
 
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_noidle(st->dev);
 	clk_disable_unprepare(st->per_clk);
 	regulator_disable(st->vref);
 	regulator_disable(st->reg);
···
 	if (ret)
 		goto vref_disable_resume;
 
+	pm_runtime_get_noresume(st->dev);
+
 	at91_adc_hw_init(indio_dev);
 
 	/* reconfiguring trigger hardware state */
-	if (!iio_buffer_enabled(indio_dev))
-		return 0;
+	if (iio_buffer_enabled(indio_dev)) {
+		ret = at91_adc_buffer_prepare(indio_dev);
+		if (ret)
+			goto pm_runtime_put;
 
-	/* check if we are enabling triggered buffer or the touchscreen */
-	if (at91_adc_current_chan_is_touch(indio_dev))
-		return at91_adc_configure_touch(st, true);
-	else
-		return at91_adc_configure_trigger(st->trig, true);
+		at91_adc_configure_trigger_registers(st, true);
+	}
 
-	/* not needed but more explicit */
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
 	return 0;
 
+pm_runtime_put:
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_noidle(st->dev);
+	clk_disable_unprepare(st->per_clk);
 vref_disable_resume:
 	regulator_disable(st->vref);
 reg_disable_resume:
···
 	return ret;
 }
 
-static DEFINE_SIMPLE_DEV_PM_OPS(at91_adc_pm_ops, at91_adc_suspend,
-				at91_adc_resume);
+static int at91_adc_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	clk_disable(st->per_clk);
+
+	return 0;
+}
+
+static int at91_adc_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	return clk_enable(st->per_clk);
+}
+
+static const struct dev_pm_ops at91_adc_pm_ops = {
+	SYSTEM_SLEEP_PM_OPS(at91_adc_suspend, at91_adc_resume)
+	RUNTIME_PM_OPS(at91_adc_runtime_suspend, at91_adc_runtime_resume,
+		       NULL)
+};
 
 static const struct of_device_id at91_adc_dt_match[] = {
 	{
···
 	.driver = {
 		.name = "at91-sama5d2_adc",
 		.of_match_table = at91_adc_dt_match,
-		.pm = pm_sleep_ptr(&at91_adc_pm_ops),
+		.pm = pm_ptr(&at91_adc_pm_ops),
 	},
 };
 module_platform_driver(at91_adc_driver)

drivers/iio/adc/imx8qxp-adc.c

···
 	struct imx8qxp_adc *adc = iio_priv(indio_dev);
 	struct device *dev = adc->dev;
 
-	u32 ctrl, vref_uv;
+	u32 ctrl;
 	long ret;
 
 	switch (mask) {
···
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_SCALE:
-		vref_uv = regulator_get_voltage(adc->vref);
-		*val = vref_uv / 1000;
+		ret = regulator_get_voltage(adc->vref);
+		if (ret < 0)
+			return ret;
+		*val = ret / 1000;
 		*val2 = 12;
 		return IIO_VAL_FRACTIONAL_LOG2;
 

drivers/iio/adc/ingenic-adc.c

···
 	}
 }
 
-static int ingenic_adc_of_xlate(struct iio_dev *iio_dev,
-				const struct of_phandle_args *iiospec)
+static int ingenic_adc_fwnode_xlate(struct iio_dev *iio_dev,
+				    const struct fwnode_reference_args *iiospec)
 {
 	int i;
 
-	if (!iiospec->args_count)
+	if (!iiospec->nargs)
 		return -EINVAL;
 
 	for (i = 0; i < iio_dev->num_channels; ++i)
···
 	return -EINVAL;
 }
 
-static void ingenic_adc_clk_cleanup(void *data)
-{
-	clk_unprepare(data);
-}
-
 static const struct iio_info ingenic_adc_info = {
 	.write_raw = ingenic_adc_write_raw,
 	.read_raw = ingenic_adc_read_raw,
 	.read_avail = ingenic_adc_read_avail,
-	.of_xlate = ingenic_adc_of_xlate,
+	.fwnode_xlate = ingenic_adc_fwnode_xlate,
 };
 
 static int ingenic_adc_buffer_enable(struct iio_dev *iio_dev)
···
 	if (IS_ERR(adc->base))
 		return PTR_ERR(adc->base);
 
-	adc->clk = devm_clk_get(dev, "adc");
+	adc->clk = devm_clk_get_prepared(dev, "adc");
 	if (IS_ERR(adc->clk)) {
 		dev_err(dev, "Unable to get clock\n");
 		return PTR_ERR(adc->clk);
 	}
 
-	ret = clk_prepare_enable(adc->clk);
+	ret = clk_enable(adc->clk);
 	if (ret) {
 		dev_err(dev, "Failed to enable clock\n");
 		return ret;
···
 
 	usleep_range(2000, 3000); /* Must wait at least 2ms. */
 	clk_disable(adc->clk);
-
-	ret = devm_add_action_or_reset(dev, ingenic_adc_clk_cleanup, adc->clk);
-	if (ret) {
-		dev_err(dev, "Unable to add action\n");
-		return ret;
-	}
 
 	iio_dev->name = "jz-adc";
 	iio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;

drivers/iio/adc/lpc18xx_adc.c

···
 	writel(0, adc->base + LPC18XX_ADC_CR);
 }
 
-static void lpc18xx_clk_disable(void *clk)
-{
-	clk_disable_unprepare(clk);
-}
-
 static void lpc18xx_regulator_disable(void *vref)
 {
 	regulator_disable(vref);
···
 	if (IS_ERR(adc->base))
 		return PTR_ERR(adc->base);
 
-	adc->clk = devm_clk_get(&pdev->dev, NULL);
+	adc->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(adc->clk))
 		return dev_err_probe(&pdev->dev, PTR_ERR(adc->clk),
 				     "error getting clock\n");
···
 	}
 
 	ret = devm_add_action_or_reset(&pdev->dev, lpc18xx_regulator_disable, adc->vref);
-	if (ret)
-		return ret;
-
-	ret = clk_prepare_enable(adc->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "unable to enable clock\n");
-		return ret;
-	}
-
-	ret = devm_add_action_or_reset(&pdev->dev, lpc18xx_clk_disable,
-				       adc->clk);
 	if (ret)
 		return ret;
 

drivers/iio/adc/max11205.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Maxim MAX11205 16-Bit Delta-Sigma ADC
+ *
+ * Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX1240-max11205.pdf
+ * Copyright (C) 2022 Analog Devices, Inc.
+ * Author: Ramona Bolboaca <[e-mail]>
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/adc/ad_sigma_delta.h>
+
+#define MAX11205_BIT_SCALE	15
+#define MAX11205A_OUT_DATA_RATE	116
+#define MAX11205B_OUT_DATA_RATE	13
+
+enum max11205_chip_type {
+	TYPE_MAX11205A,
+	TYPE_MAX11205B,
+};
+
+struct max11205_chip_info {
+	unsigned int	out_data_rate;
+	const char	*name;
+};
+
+struct max11205_state {
+	const struct max11205_chip_info	*chip_info;
+	struct regulator		*vref;
+	struct ad_sigma_delta		sd;
+};
+
+static const struct ad_sigma_delta_info max11205_sigma_delta_info = {
+	.has_registers = false,
+};
+
+static int max11205_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct max11205_state *st = iio_priv(indio_dev);
+	int reg_mv;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return ad_sigma_delta_single_conversion(indio_dev, chan, val);
+	case IIO_CHAN_INFO_SCALE:
+		reg_mv = regulator_get_voltage(st->vref);
+		if (reg_mv < 0)
+			return reg_mv;
+		reg_mv /= 1000;
+		*val = reg_mv;
+		*val2 = MAX11205_BIT_SCALE;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = st->chip_info->out_data_rate;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info max11205_iio_info = {
+	.read_raw = max11205_read_raw,
+	.validate_trigger = ad_sd_validate_trigger,
+};
+
+static const struct iio_chan_spec max11205_channels[] = {
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+	},
+};
+
+static const struct max11205_chip_info max11205_chip_info[] = {
+	[TYPE_MAX11205A] = {
+		.out_data_rate = MAX11205A_OUT_DATA_RATE,
+		.name = "max11205a",
+	},
+	[TYPE_MAX11205B] = {
+		.out_data_rate = MAX11205B_OUT_DATA_RATE,
+		.name = "max11205b",
+	},
+};
+
+static void max11205_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
+static int max11205_probe(struct spi_device *spi)
+{
+	struct max11205_state *st;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	ad_sd_init(&st->sd, indio_dev, spi, &max11205_sigma_delta_info);
+
+	st->chip_info = device_get_match_data(&spi->dev);
+	if (!st->chip_info)
+		st->chip_info =
+			(const struct max11205_chip_info *)spi_get_device_id(spi)->driver_data;
+
+	indio_dev->name = st->chip_info->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = max11205_channels;
+	indio_dev->num_channels = 1;
+	indio_dev->info = &max11205_iio_info;
+
+	st->vref = devm_regulator_get(&spi->dev, "vref");
+	if (IS_ERR(st->vref))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->vref),
+				     "Failed to get vref regulator\n");
+
+	ret = regulator_enable(st->vref);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&spi->dev, max11205_reg_disable, st->vref);
+	if (ret)
+		return ret;
+
+	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id max11205_spi_ids[] = {
+	{ "max11205a", (kernel_ulong_t)&max11205_chip_info[TYPE_MAX11205A] },
+	{ "max11205b", (kernel_ulong_t)&max11205_chip_info[TYPE_MAX11205B] },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, max11205_spi_ids);
+
+static const struct of_device_id max11205_dt_ids[] = {
+	{
+		.compatible = "maxim,max11205a",
+		.data = &max11205_chip_info[TYPE_MAX11205A],
+	},
+	{
+		.compatible = "maxim,max11205b",
+		.data = &max11205_chip_info[TYPE_MAX11205B],
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, max11205_dt_ids);
+
+static struct spi_driver max11205_spi_driver = {
+	.driver = {
+		.name = "max11205",
+		.of_match_table = max11205_dt_ids,
+	},
+	.probe = max11205_probe,
+	.id_table = max11205_spi_ids,
+};
+module_spi_driver(max11205_spi_driver);
+
+MODULE_AUTHOR("Ramona Bolboaca <[e-mail]>");
+MODULE_DESCRIPTION("MAX11205 ADC driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);

drivers/iio/adc/max1363.c

···
 #include <linux/iio/sysfs.h>
 #include <linux/iio/events.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/driver.h>
 #include <linux/iio/kfifo_buf.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
···
 					  sizeof(struct max1363_state));
 	if (!indio_dev)
 		return -ENOMEM;
-
-	ret = devm_iio_map_array_register(&client->dev, indio_dev,
-					  client->dev.platform_data);
-	if (ret < 0)
-		return ret;
 
 	st = iio_priv(indio_dev);
 

drivers/iio/adc/mt6360-adc.c

···
 	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
-static const struct of_device_id __maybe_unused mt6360_adc_of_id[] = {
+static const struct of_device_id mt6360_adc_of_id[] = {
 	{ .compatible = "mediatek,mt6360-adc", },
 	{}
 };

drivers/iio/adc/qcom-pm8xxx-xoadc.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
···
 	}
 }
 
-static int pm8xxx_of_xlate(struct iio_dev *indio_dev,
-			   const struct of_phandle_args *iiospec)
+static int pm8xxx_fwnode_xlate(struct iio_dev *indio_dev,
+			       const struct fwnode_reference_args *iiospec)
 {
 	struct pm8xxx_xoadc *adc = iio_priv(indio_dev);
 	u8 pre_scale_mux;
···
 	 * First cell is prescaler or premux, second cell is analog
 	 * mux.
 	 */
-	if (iiospec->args_count != 2) {
-		dev_err(&indio_dev->dev, "wrong number of arguments for %pOFn need 2 got %d\n",
-			iiospec->np,
-			iiospec->args_count);
+	if (iiospec->nargs != 2) {
+		dev_err(&indio_dev->dev, "wrong number of arguments for %pfwP need 2 got %d\n",
+			iiospec->fwnode,
+			iiospec->nargs);
 		return -EINVAL;
 	}
 	pre_scale_mux = (u8)iiospec->args[0];
···
 }
 
 static const struct iio_info pm8xxx_xoadc_info = {
-	.of_xlate = pm8xxx_of_xlate,
+	.fwnode_xlate = pm8xxx_fwnode_xlate,
 	.read_raw = pm8xxx_read_raw,
 };
 
 static int pm8xxx_xoadc_parse_channel(struct device *dev,
-				      struct device_node *np,
+				      struct fwnode_handle *fwnode,
 				      const struct xoadc_channel *hw_channels,
 				      struct iio_chan_spec *iio_chan,
 				      struct pm8xxx_chan_info *ch)
 {
-	const char *name = np->name;
+	const char *name = fwnode_get_name(fwnode);
 	const struct xoadc_channel *hwchan;
-	u32 pre_scale_mux, amux_channel;
+	u32 pre_scale_mux, amux_channel, reg[2];
 	u32 rsv, dec;
 	int ret;
 	int chid;
 
-	ret = of_property_read_u32_index(np, "reg", 0, &pre_scale_mux);
+	ret = fwnode_property_read_u32_array(fwnode, "reg", reg,
+					     ARRAY_SIZE(reg));
 	if (ret) {
-		dev_err(dev, "invalid pre scale/mux number %s\n", name);
+		dev_err(dev, "invalid pre scale/mux or amux channel number %s\n",
+			name);
 		return ret;
 	}
-	ret = of_property_read_u32_index(np, "reg", 1, &amux_channel);
-	if (ret) {
-		dev_err(dev, "invalid amux channel number %s\n", name);
-		return ret;
-	}
+
+	pre_scale_mux = reg[0];
+	amux_channel = reg[1];
 
 	/* Find the right channel setting */
 	chid = 0;
···
 	/* Everyone seems to use default ("type 2") decimation */
 	ch->decimation = VADC_DEF_DECIMATION;
 
-	if (!of_property_read_u32(np, "qcom,ratiometric", &rsv)) {
+	if (!fwnode_property_read_u32(fwnode, "qcom,ratiometric", &rsv)) {
 		ch->calibration = VADC_CALIB_RATIOMETRIC;
 		if (rsv > XOADC_RSV_MAX) {
 			dev_err(dev, "%s too large RSV value %d\n", name, rsv);
···
 	}
 
 	/* Optional decimation, if omitted we use the default */
-	ret = of_property_read_u32(np, "qcom,decimation", &dec);
+	ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &dec);
 	if (!ret) {
 		ret = qcom_vadc_decimation_from_dt(dec);
 		if (ret < 0) {
···
 	return 0;
 }
 
-static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc,
-				       struct device_node *np)
+static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc)
 {
-	struct device_node *child;
+	struct fwnode_handle *child;
 	struct pm8xxx_chan_info *ch;
 	int ret;
 	int i;
 
-	adc->nchans = of_get_available_child_count(np);
+	adc->nchans = device_get_child_node_count(adc->dev);
 	if (!adc->nchans) {
 		dev_err(adc->dev, "no channel children\n");
 		return -ENODEV;
···
 		return -ENOMEM;
 
 	i = 0;
-	for_each_available_child_of_node(np, child) {
+	device_for_each_child_node(adc->dev, child) {
 		ch = &adc->chans[i];
 		ret = pm8xxx_xoadc_parse_channel(adc->dev, child,
 						 adc->variant->channels,
 						 &adc->iio_chans[i],
 						 ch);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 		i++;
···
 	const struct xoadc_variant *variant;
 	struct pm8xxx_xoadc *adc;
 	struct iio_dev *indio_dev;
-	struct device_node *np = pdev->dev.of_node;
 	struct regmap *map;
 	struct device *dev = &pdev->dev;
 	int ret;
 
-	variant = of_device_get_match_data(dev);
+	variant = device_get_match_data(dev);
 	if (!variant)
 		return -ENODEV;
 
···
 	init_completion(&adc->complete);
 	mutex_init(&adc->lock);
 
-	ret = pm8xxx_xoadc_parse_channels(adc, np);
+	ret = pm8xxx_xoadc_parse_channels(adc);
 	if (ret)
 		return ret;
 

drivers/iio/adc/qcom-spmi-adc5.c

···
 #include <linux/log2.h>
 #include <linux/math64.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
···
 	return IRQ_HANDLED;
 }
 
-static int adc5_of_xlate(struct iio_dev *indio_dev,
-				const struct of_phandle_args *iiospec)
+static int adc5_fwnode_xlate(struct iio_dev *indio_dev,
+			     const struct fwnode_reference_args *iiospec)
 {
 	struct adc5_chip *adc = iio_priv(indio_dev);
 	int i;
···
 	return -EINVAL;
 }
 
-static int adc7_of_xlate(struct iio_dev *indio_dev,
-				const struct of_phandle_args *iiospec)
+static int adc7_fwnode_xlate(struct iio_dev *indio_dev,
+			     const struct fwnode_reference_args *iiospec)
 {
 	struct adc5_chip *adc = iio_priv(indio_dev);
 	int i, v_channel;
···
 
 static const struct iio_info adc5_info = {
 	.read_raw = adc5_read_raw,
-	.of_xlate = adc5_of_xlate,
+	.fwnode_xlate = adc5_fwnode_xlate,
 };
 
 static const struct iio_info adc7_info = {
 	.read_raw = adc7_read_raw,
-	.of_xlate = adc7_of_xlate,
+	.fwnode_xlate = adc7_fwnode_xlate,
 };
 
 struct adc5_channels {
···
 					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_VBAT_SNS]		= ADC5_CHAN_VOLT("vbat_sns", 1,
 					SCALE_HW_CALIB_DEFAULT)
+	[ADC5_VCOIN]		= ADC5_CHAN_VOLT("vcoin", 1,
+					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_DIE_TEMP]		= ADC5_CHAN_TEMP("die_temp", 0,
 					SCALE_HW_CALIB_PMIC_THERM)
 	[ADC5_USB_IN_I]		= ADC5_CHAN_VOLT("usb_in_i_uv", 0,
···
 					SCALE_HW_CALIB_THERM_100K_PULLUP)
 	[ADC5_AMUX_THM2]	= ADC5_CHAN_TEMP("amux_thm2", 0,
 					SCALE_HW_CALIB_PM5_SMB_TEMP)
+	[ADC5_GPIO1_100K_PU]	= ADC5_CHAN_TEMP("gpio1_100k_pu", 0,
+					SCALE_HW_CALIB_THERM_100K_PULLUP)
+	[ADC5_GPIO3_100K_PU]	= ADC5_CHAN_TEMP("gpio3_100k_pu", 0,
+					SCALE_HW_CALIB_THERM_100K_PULLUP)
+	[ADC5_GPIO4_100K_PU]	= ADC5_CHAN_TEMP("gpio4_100k_pu", 0,
+					SCALE_HW_CALIB_THERM_100K_PULLUP)
 };
 
 static const struct adc5_channels adc7_chans_pmic[ADC5_MAX_CHANNEL] = {
···
 					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_1P25VREF]		= ADC5_CHAN_VOLT("vref_1p25", 0,
 					SCALE_HW_CALIB_DEFAULT)
+	[ADC5_VREF_VADC]	= ADC5_CHAN_VOLT("vref_vadc", 0,
+					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_VPH_PWR]		= ADC5_CHAN_VOLT("vph_pwr", 1,
 					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_VBAT_SNS]		= ADC5_CHAN_VOLT("vbat_sns", 1,
···
 					SCALE_HW_CALIB_THERM_100K_PULLUP)
 };
 
-static int adc5_get_dt_channel_data(struct adc5_chip *adc,
+static int adc5_get_fw_channel_data(struct adc5_chip *adc,
 				    struct adc5_channel_prop *prop,
-				    struct device_node *node,
+				    struct fwnode_handle *fwnode,
 				    const struct adc5_data *data)
 {
-	const char *name = node->name, *channel_name;
+	const char *name = fwnode_get_name(fwnode), *channel_name;
 	u32 chan, value, varr[2];
 	u32 sid = 0;
 	int ret;
 	struct device *dev = adc->dev;
 
-	ret = of_property_read_u32(node, "reg", &chan);
+	ret = fwnode_property_read_u32(fwnode, "reg", &chan);
 	if (ret) {
 		dev_err(dev, "invalid channel number %s\n", name);
 		return ret;
···
 	prop->channel = chan;
 	prop->sid = sid;
 
-	channel_name = of_get_property(node,
-				"label", NULL) ? : node->name;
-	if (!channel_name) {
-		dev_err(dev, "Invalid channel name\n");
-		return -EINVAL;
-	}
+	ret = fwnode_property_read_string(fwnode, "label", &channel_name);
+	if (ret)
+		channel_name = name;
+
 	prop->datasheet_name = channel_name;
 
-	ret = of_property_read_u32(node, "qcom,decimation", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &value);
 	if (!ret) {
 		ret = qcom_adc5_decimation_from_dt(value, data->decimation);
 		if (ret < 0) {
···
 		prop->decimation = ADC5_DECIMATION_DEFAULT;
 	}
 
-	ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2);
+	ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2);
 	if (!ret) {
 		ret = qcom_adc5_prescaling_from_dt(varr[0], varr[1]);
 		if (ret < 0) {
···
 			adc->data->adc_chans[prop->channel].prescale_index;
 	}
 
-	ret = of_property_read_u32(node, "qcom,hw-settle-time", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,hw-settle-time", &value);
 	if (!ret) {
 		u8 dig_version[2];
 
···
 		prop->hw_settle_time = VADC_DEF_HW_SETTLE_TIME;
 	}
 
-	ret = of_property_read_u32(node, "qcom,avg-samples", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,avg-samples", &value);
 	if (!ret) {
 		ret = qcom_adc5_avg_samples_from_dt(value);
 		if (ret < 0) {
···
 		prop->avg_samples = VADC_DEF_AVG_SAMPLES;
 	}
 
-	if (of_property_read_bool(node, "qcom,ratiometric"))
+	if (fwnode_property_read_bool(fwnode, "qcom,ratiometric"))
 		prop->cal_method = ADC5_RATIOMETRIC_CAL;
 	else
 		prop->cal_method = ADC5_ABSOLUTE_CAL;
···
 };
 MODULE_DEVICE_TABLE(of, adc5_match_table);
 
-static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node)
+static int adc5_get_fw_data(struct adc5_chip *adc)
 {
 	const struct adc5_channels *adc_chan;
 	struct iio_chan_spec *iio_chan;
 	struct adc5_channel_prop prop, *chan_props;
-	struct device_node *child;
+	struct fwnode_handle *child;
 	unsigned int index = 0;
 	int ret;
 
-	adc->nchannels = of_get_available_child_count(node);
+	adc->nchannels = device_get_child_node_count(adc->dev);
 	if (!adc->nchannels)
 		return -EINVAL;
 
···
 
 	chan_props = adc->chan_props;
 	iio_chan = adc->iio_chans;
-	adc->data = of_device_get_match_data(adc->dev);
+	adc->data = device_get_match_data(adc->dev);
 	if (!adc->data)
 		adc->data = &adc5_data_pmic;
 
-	for_each_available_child_of_node(node, child) {
-		ret = adc5_get_dt_channel_data(adc, &prop, child, adc->data);
+	device_for_each_child_node(adc->dev, child) {
+		ret = adc5_get_fw_channel_data(adc, &prop, child, adc->data);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 
···
 
 static int adc5_probe(struct platform_device *pdev)
 {
-	struct device_node *node = pdev->dev.of_node;
 	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	struct adc5_chip *adc;
···
 	if (!regmap)
 		return -ENODEV;
 
-	ret = of_property_read_u32(node, "reg", &reg);
+	ret = device_property_read_u32(dev, "reg", &reg);
 	if (ret < 0)
 		return ret;
 
···
 	init_completion(&adc->complete);
 	mutex_init(&adc->lock);
 
-	ret = adc5_get_dt_data(adc, node);
+	ret = adc5_get_fw_data(adc);
 	if (ret) {
 		dev_err(dev, "adc get dt data failed\n");
 		return ret;

drivers/iio/adc/qcom-spmi-vadc.c

···
 #include <linux/kernel.h>
 #include <linux/math64.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 #include <linux/log2.h>
···
 	return ret;
 }
 
-static int vadc_of_xlate(struct iio_dev *indio_dev,
-			 const struct of_phandle_args *iiospec)
+static int vadc_fwnode_xlate(struct iio_dev *indio_dev,
+			     const struct fwnode_reference_args *iiospec)
 {
 	struct vadc_priv *vadc = iio_priv(indio_dev);
 	unsigned int i;
···
 
 static const struct iio_info vadc_info = {
 	.read_raw = vadc_read_raw,
-	.of_xlate = vadc_of_xlate,
+	.fwnode_xlate = vadc_fwnode_xlate,
 };
 
 struct vadc_channels {
···
 	VADC_CHAN_NO_SCALE(LR_MUX3_BUF_PU1_PU2_XO_THERM, 0)
 };
 
-static int vadc_get_dt_channel_data(struct device *dev,
+static int vadc_get_fw_channel_data(struct device *dev,
 				    struct vadc_channel_prop *prop,
-				    struct device_node *node)
+				    struct fwnode_handle *fwnode)
 {
-	const char *name = node->name;
+	const char *name = fwnode_get_name(fwnode);
 	u32 chan, value, varr[2];
 	int ret;
 
-	ret = of_property_read_u32(node, "reg", &chan);
+	ret = fwnode_property_read_u32(fwnode, "reg", &chan);
 	if (ret) {
 		dev_err(dev, "invalid channel number %s\n", name);
 		return ret;
···
 	/* the channel has DT description */
 	prop->channel = chan;
 
-	ret = of_property_read_u32(node, "qcom,decimation", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &value);
 	if (!ret) {
 		ret = qcom_vadc_decimation_from_dt(value);
 		if (ret < 0) {
···
 		prop->decimation = VADC_DEF_DECIMATION;
 	}
 
-	ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2);
+	ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2);
 	if (!ret) {
 		ret = vadc_prescaling_from_dt(varr[0], varr[1]);
 		if (ret < 0) {
···
 		prop->prescale = vadc_chans[prop->channel].prescale_index;
 	}
 
-	ret = of_property_read_u32(node, "qcom,hw-settle-time", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,hw-settle-time", &value);
 	if (!ret) {
 		ret = vadc_hw_settle_time_from_dt(value);
 		if (ret < 0) {
···
 		prop->hw_settle_time = VADC_DEF_HW_SETTLE_TIME;
 	}
 
-	ret = of_property_read_u32(node, "qcom,avg-samples", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,avg-samples", &value);
 	if (!ret) {
 		ret = vadc_avg_samples_from_dt(value);
 		if (ret < 0) {
···
 		prop->avg_samples = VADC_DEF_AVG_SAMPLES;
 	}
 
-	if (of_property_read_bool(node, "qcom,ratiometric"))
+	if (fwnode_property_read_bool(fwnode, "qcom,ratiometric"))
 		prop->calibration = VADC_CALIB_RATIOMETRIC;
 	else
 		prop->calibration = VADC_CALIB_ABSOLUTE;
···
 	return 0;
 }
 
-static int vadc_get_dt_data(struct vadc_priv *vadc, struct device_node *node)
+static int vadc_get_fw_data(struct vadc_priv *vadc)
 {
 	const struct vadc_channels *vadc_chan;
 	struct iio_chan_spec *iio_chan;
 	struct vadc_channel_prop prop;
-	struct device_node *child;
+	struct fwnode_handle *child;
 	unsigned int index = 0;
 	int ret;
 
-	vadc->nchannels = of_get_available_child_count(node);
+	vadc->nchannels = device_get_child_node_count(vadc->dev);
 	if (!vadc->nchannels)
 		return -EINVAL;
 
···
 
 	iio_chan = vadc->iio_chans;
 
-	for_each_available_child_of_node(node, child) {
-		ret = vadc_get_dt_channel_data(vadc->dev, &prop, child);
+	device_for_each_child_node(vadc->dev, child) {
+		ret = vadc_get_fw_channel_data(vadc->dev, &prop, child);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 
···
 
 static int vadc_probe(struct platform_device *pdev)
 {
-	struct device_node *node = pdev->dev.of_node;
 	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	struct vadc_priv *vadc;
···
 	if (!regmap)
 		return -ENODEV;
 
-	ret = of_property_read_u32(node, "reg", &reg);
+	ret = device_property_read_u32(dev, "reg", &reg);
 	if (ret < 0)
 		return ret;
 
···
 	if (ret)
 		return ret;
 
-	ret = vadc_get_dt_data(vadc, node);
+	ret = vadc_get_fw_data(vadc);
 	if (ret)
 		return ret;
 

drivers/iio/adc/rtq6056.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 Richtek Technology Corp.
+ *
+ * ChiYuan Huang <[e-mail]>
+ */
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+#include <linux/util_macros.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#define RTQ6056_REG_CONFIG	0x00
+#define RTQ6056_REG_SHUNTVOLT	0x01
+#define RTQ6056_REG_BUSVOLT	0x02
+#define RTQ6056_REG_POWER	0x03
+#define RTQ6056_REG_CURRENT	0x04
+#define RTQ6056_REG_CALIBRATION	0x05
+#define RTQ6056_REG_MASKENABLE	0x06
+#define RTQ6056_REG_ALERTLIMIT	0x07
+#define RTQ6056_REG_MANUFACTID	0xFE
+#define RTQ6056_REG_DIEID	0xFF
+
+#define RTQ6056_VENDOR_ID	0x1214
+#define RTQ6056_DEFAULT_CONFIG	0x4127
+#define RTQ6056_CONT_ALLON	7
+
+enum {
+	RTQ6056_CH_VSHUNT = 0,
+	RTQ6056_CH_VBUS,
+	RTQ6056_CH_POWER,
+	RTQ6056_CH_CURRENT,
+	RTQ6056_MAX_CHANNEL
+};
+
+enum {
+	F_OPMODE = 0,
+	F_VSHUNTCT,
+	F_VBUSCT,
+	F_AVG,
+	F_RESET,
+	F_MAX_FIELDS
+};
+
+struct rtq6056_priv {
+	struct device *dev;
+	struct regmap *regmap;
+	struct regmap_field *rm_fields[F_MAX_FIELDS];
+	u32 shunt_resistor_uohm;
+	int vshuntct_us;
+	int vbusct_us;
+	int avg_sample;
+};
+
+static const struct reg_field rtq6056_reg_fields[F_MAX_FIELDS] = {
+	[F_OPMODE] = REG_FIELD(RTQ6056_REG_CONFIG, 0, 2),
+	[F_VSHUNTCT] = REG_FIELD(RTQ6056_REG_CONFIG, 3, 5),
+	[F_VBUSCT] = REG_FIELD(RTQ6056_REG_CONFIG, 6, 8),
+	[F_AVG]	= REG_FIELD(RTQ6056_REG_CONFIG, 9, 11),
+	[F_RESET] = REG_FIELD(RTQ6056_REG_CONFIG, 15, 15),
+};
+
+static const struct iio_chan_spec rtq6056_channels[RTQ6056_MAX_CHANNEL + 1] = {
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = 0,
+		.address = RTQ6056_REG_SHUNTVOLT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = 1,
+		.address = RTQ6056_REG_BUSVOLT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 1,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	{
+		.type = IIO_POWER,
+		.indexed = 1,
+		.channel = 2,
+		.address = RTQ6056_REG_POWER,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 2,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	{
+		.type = IIO_CURRENT,
+		.indexed = 1,
+		.channel = 3,
+		.address = RTQ6056_REG_CURRENT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 3,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(RTQ6056_MAX_CHANNEL),
+};
+
+static int rtq6056_adc_read_channel(struct rtq6056_priv *priv,
+				    struct iio_chan_spec const *ch,
+				    int *val)
+{
+	struct device *dev = priv->dev;
+	unsigned int addr = ch->address;
+	unsigned int regval;
+	int ret;
+
+	pm_runtime_get_sync(dev);
+	ret = regmap_read(priv->regmap, addr, &regval);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put(dev);
+	if (ret)
+		return ret;
+
+	/* Power and VBUS is unsigned 16-bit, others are signed 16-bit */
+	if (addr == RTQ6056_REG_BUSVOLT || addr == RTQ6056_REG_POWER)
+		*val = regval;
+	else
+		*val = sign_extend32(regval, 16);
+
+	return IIO_VAL_INT;
+}
+
+static int rtq6056_adc_read_scale(struct iio_chan_spec const *ch, int *val,
+				  int *val2)
+{
+	switch (ch->address) {
+	case RTQ6056_REG_SHUNTVOLT:
+		/* VSHUNT lsb  2.5uV */
+		*val = 2500;
+		*val2 = 1000000;
+		return IIO_VAL_FRACTIONAL;
+	case RTQ6056_REG_BUSVOLT:
+		/* VBUS lsb 1.25mV */
+		*val = 1250;
+		*val2 = 1000;
+		return IIO_VAL_FRACTIONAL;
+	case RTQ6056_REG_POWER:
+		/* Power lsb 25mW */
+		*val = 25;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+/*
+ * Sample frequency for channel VSHUNT and VBUS. The indices correspond
+ * with the bit value expected by the chip. And it can be found at
+ * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
+ */
+static const int rtq6056_samp_freq_list[] = {
+	7194, 4926, 3717, 1904, 964, 485, 243, 122,
+};
+
+static int rtq6056_adc_set_samp_freq(struct rtq6056_priv *priv,
+				     struct iio_chan_spec const *ch, int val)
+{
+	struct regmap_field *rm_field;
+	unsigned int selector;
+	int *ct, ret;
+
+	if (val > 7194 || val < 122)
+		return -EINVAL;
+
+	if (ch->address == RTQ6056_REG_SHUNTVOLT) {
+		rm_field = priv->rm_fields[F_VSHUNTCT];
+		ct = &priv->vshuntct_us;
+	} else if (ch->address == RTQ6056_REG_BUSVOLT) {
+		rm_field = priv->rm_fields[F_VBUSCT];
+		ct = &priv->vbusct_us;
+	} else
+		return -EINVAL;
+
+	selector = find_closest_descending(val, rtq6056_samp_freq_list,
+					   ARRAY_SIZE(rtq6056_samp_freq_list));
+
+	ret = regmap_field_write(rm_field, selector);
+	if (ret)
+		return ret;
+
+	*ct = 1000000 / rtq6056_samp_freq_list[selector];
+
+	return 0;
+}
+
+/*
+ * Available averaging rate for rtq6056. The indices correspond with the bit
+ * value expected by the chip. And it can be found at
+ * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
+ */
+static const int rtq6056_avg_sample_list[] = {
+	1, 4, 16, 64, 128, 256, 512, 1024,
+};
+
+static int rtq6056_adc_set_average(struct rtq6056_priv *priv, int val)
+{
+	unsigned int selector;
+	int ret;
+
+	if (val > 1024 || val < 1)
+		return -EINVAL;
+
+	selector = find_closest(val, rtq6056_avg_sample_list,
+				ARRAY_SIZE(rtq6056_avg_sample_list));
+
+	ret = regmap_field_write(priv->rm_fields[F_AVG], selector);
+	if (ret)
+		return ret;
+
+	priv->avg_sample = rtq6056_avg_sample_list[selector];
+
+	return 0;
+}
+
+static int rtq6056_adc_get_sample_freq(struct rtq6056_priv *priv,
+				       struct iio_chan_spec const *ch, int *val)
+{
+	int sample_time;
+
+	if (ch->address == RTQ6056_REG_SHUNTVOLT)
+		sample_time = priv->vshuntct_us;
+	else if (ch->address == RTQ6056_REG_BUSVOLT)
+		sample_time = priv->vbusct_us;
+	else {
+		sample_time = priv->vshuntct_us + priv->vbusct_us;
+		sample_time *= priv->avg_sample;
+	}
+
+	*val = 1000000 / sample_time;
+
+	return IIO_VAL_INT;
+}
+
+static int rtq6056_adc_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan, int *val,
+				int *val2, long mask)
+{
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return rtq6056_adc_read_channel(priv, chan, val);
+	case IIO_CHAN_INFO_SCALE:
+		return rtq6056_adc_read_scale(chan, val, val2);
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*val = priv->avg_sample;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return rtq6056_adc_get_sample_freq(priv, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int rtq6056_adc_read_avail(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  const int **vals, int *type, int *length,
+				  long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = rtq6056_samp_freq_list;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(rtq6056_samp_freq_list);
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*vals = rtq6056_avg_sample_list;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(rtq6056_avg_sample_list);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int rtq6056_adc_write_raw(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan, int val,
+				 int val2, long mask)
+{
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = rtq6056_adc_set_samp_freq(priv, chan, val);
+		break;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		ret = rtq6056_adc_set_average(priv, val);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static const char *rtq6056_channel_labels[RTQ6056_MAX_CHANNEL] = {
+	[RTQ6056_CH_VSHUNT] = "Vshunt",
+	[RTQ6056_CH_VBUS] = "Vbus",
+	[RTQ6056_CH_POWER] = "Power",
+	[RTQ6056_CH_CURRENT] = "Current",
+};
+
+static int rtq6056_adc_read_label(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  char *label)
+{
+	return sysfs_emit(label, "%s\n", rtq6056_channel_labels[chan->channel]);
+}
+
+static int rtq6056_set_shunt_resistor(struct rtq6056_priv *priv,
+				      int resistor_uohm)
+{
+	unsigned int calib_val;
+	int ret;
+
+	if (resistor_uohm <= 0) {
+		dev_err(priv->dev, "Invalid resistor [%d]\n", resistor_uohm);
+		return -EINVAL;
+	}
+
+	/* calibration = 5120000 / (Rshunt (uOhm) * current lsb (1mA)) */
+	calib_val = 5120000 / resistor_uohm;
+	ret = regmap_write(priv->regmap, RTQ6056_REG_CALIBRATION, calib_val);
+	if (ret)
+		return ret;
+
+	priv->shunt_resistor_uohm = resistor_uohm;
+
+	return 0;
+}
+
+static ssize_t shunt_resistor_show(struct device *dev,
+				   struct device_attribute *attr, char *buf)
+{
+	struct rtq6056_priv *priv = iio_priv(dev_to_iio_dev(dev));
+	int vals[2] = { priv->shunt_resistor_uohm, 1000000 };
+
+	return iio_format_value(buf, IIO_VAL_FRACTIONAL, 1, vals);
+}
+
+static ssize_t shunt_resistor_store(struct device *dev,
+				    struct device_attribute *attr,
+				    const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+	int val, val_fract, ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = iio_str_to_fixpoint(buf, 100000, &val, &val_fract);
+	if (ret)
+		goto out_store;
+
+	ret = rtq6056_set_shunt_resistor(priv, val * 1000000 + val_fract);
+
+out_store:
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret ?: len;
+}
+
+static IIO_DEVICE_ATTR_RW(shunt_resistor, 0);
+
+static struct attribute *rtq6056_attributes[] = {
+	&iio_dev_attr_shunt_resistor.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group rtq6056_attribute_group = {
+	.attrs = rtq6056_attributes,
+};
+
+static const struct iio_info rtq6056_info = {
+	.attrs = &rtq6056_attribute_group,
+	.read_raw = rtq6056_adc_read_raw,
+	.read_avail = rtq6056_adc_read_avail,
+	.write_raw = rtq6056_adc_write_raw,
+	.read_label = rtq6056_adc_read_label,
+};
+
+static irqreturn_t rtq6056_buffer_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+	struct device *dev = priv->dev;
+	struct {
+		u16 vals[RTQ6056_MAX_CHANNEL];
+		s64 timestamp __aligned(8);
+	} data;
+	unsigned int raw;
+	int i = 0, bit, ret;
+
+	memset(&data, 0, sizeof(data));
+
+	pm_runtime_get_sync(dev);
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) {
+		unsigned int addr = rtq6056_channels[bit].address;
+
+		ret = regmap_read(priv->regmap, addr, &raw);
+		if (ret)
+			goto out;
+
+		data.vals[i++] = raw;
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &data, iio_get_time_ns(indio_dev));
+
+out:
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put(dev);
+
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static void rtq6056_enter_shutdown_state(void *dev)
+{
+	struct rtq6056_priv *priv = dev_get_drvdata(dev);
+
+	/* Enter shutdown state */
+	regmap_field_write(priv->rm_fields[F_OPMODE], 0);
+}
+
+static bool rtq6056_is_readable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case RTQ6056_REG_CONFIG ... RTQ6056_REG_ALERTLIMIT:
+	case RTQ6056_REG_MANUFACTID ... RTQ6056_REG_DIEID:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rtq6056_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case RTQ6056_REG_CONFIG:
+	case RTQ6056_REG_CALIBRATION ... RTQ6056_REG_ALERTLIMIT:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config rtq6056_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.val_format_endian = REGMAP_ENDIAN_BIG,
+	.max_register = RTQ6056_REG_DIEID,
+	.readable_reg = rtq6056_is_readable_reg,
+	.writeable_reg = rtq6056_is_writeable_reg,
+};
+
+static int rtq6056_probe(struct i2c_client *i2c)
+{
+	struct iio_dev *indio_dev;
+	struct rtq6056_priv *priv;
+	struct device *dev = &i2c->dev;
+	struct regmap *regmap;
+	unsigned int vendor_id, shunt_resistor_uohm;
+	int ret;
+
+	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_WORD_DATA))
+		return -EOPNOTSUPP;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*priv));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	priv = iio_priv(indio_dev);
+	priv->dev = dev;
+	priv->vshuntct_us = priv->vbusct_us = 1037;
+	priv->avg_sample = 1;
+	i2c_set_clientdata(i2c, priv);
+
+	regmap = devm_regmap_init_i2c(i2c, &rtq6056_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap),
+				     "Failed to init regmap\n");
+
+	priv->regmap = regmap;
+
+	ret = regmap_read(regmap, RTQ6056_REG_MANUFACTID, &vendor_id);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to get manufacturer info\n");
+
+	if (vendor_id != RTQ6056_VENDOR_ID)
+		return dev_err_probe(dev, -ENODEV,
+				     "Invalid vendor id 0x%04x\n", vendor_id);
+
+	ret = devm_regmap_field_bulk_alloc(dev, regmap, priv->rm_fields,
+					   rtq6056_reg_fields, F_MAX_FIELDS);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init regmap field\n");
+
+	/*
+	 * By default, configure average sample as 1, bus and shunt conversion
+	 * time as 1037 microsecond, and operating mode to all on.
+	 */
+	ret = regmap_write(regmap, RTQ6056_REG_CONFIG, RTQ6056_DEFAULT_CONFIG);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to enable continuous sensing\n");
+
+	ret = devm_add_action_or_reset(dev, rtq6056_enter_shutdown_state, dev);
+	if (ret)
+		return ret;
+
+	pm_runtime_set_autosuspend_delay(dev, MSEC_PER_SEC);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_mark_last_busy(dev);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable pm_runtime\n");
+
+	/* By default, use 2000 micro-Ohm resistor */
+	shunt_resistor_uohm = 2000;
+	device_property_read_u32(dev, "shunt-resistor-micro-ohms",
+				 &shunt_resistor_uohm);
+
+	ret = rtq6056_set_shunt_resistor(priv, shunt_resistor_uohm);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to init shunt resistor\n");
+
+	indio_dev->name = "rtq6056";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = rtq6056_channels;
+	indio_dev->num_channels = ARRAY_SIZE(rtq6056_channels);
+	indio_dev->info = &rtq6056_info;
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+					      rtq6056_buffer_trigger_handler,
+					      NULL);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to allocate iio trigger buffer\n");
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static int rtq6056_runtime_suspend(struct device *dev)
+{
+	struct rtq6056_priv *priv = dev_get_drvdata(dev);
+
+	/* Configure to shutdown mode */
+	return regmap_field_write(priv->rm_fields[F_OPMODE], 0);
+}
+
+static int rtq6056_runtime_resume(struct device *dev)
+{
+	struct rtq6056_priv *priv = dev_get_drvdata(dev);
+	int sample_rdy_time_us, ret;
+
+	ret = regmap_field_write(priv->rm_fields[F_OPMODE], RTQ6056_CONT_ALLON);
+	if (ret)
+		return ret;
+
+	sample_rdy_time_us = priv->vbusct_us + priv->vshuntct_us;
+	sample_rdy_time_us *= priv->avg_sample;
+
+	usleep_range(sample_rdy_time_us, sample_rdy_time_us + 100);
+
+	return 0;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(rtq6056_pm_ops, rtq6056_runtime_suspend,
+				 rtq6056_runtime_resume, NULL);
+
+static const struct of_device_id rtq6056_device_match[] = {
+	{ .compatible = "richtek,rtq6056" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, rtq6056_device_match);
+
+static struct i2c_driver rtq6056_driver = {
+	.driver = {
+		.name = "rtq6056",
+		.of_match_table = rtq6056_device_match,
+		.pm = pm_ptr(&rtq6056_pm_ops),
+	},
+	.probe_new = rtq6056_probe,
+};
+module_i2c_driver(rtq6056_driver);
+
+MODULE_AUTHOR("ChiYuan Huang <[e-mail]>");
+MODULE_DESCRIPTION("Richtek RTQ6056 Driver");
+MODULE_LICENSE("GPL v2");

drivers/iio/adc/stm32-adc.c

···
 #include <linux/io.h>
 #include <linux/iopoll.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/nvmem-consumer.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
 
 #include "stm32-adc-core.h"
 
···
  * @chan_name:		channel name array
  * @num_diff:		number of differential channels
  * @int_ch:		internal channel indexes array
+ * @nsmps:		number of channels with optional sample time
  */
 struct stm32_adc {
 	struct stm32_adc_common	*common;
···
 	char			chan_name[STM32_ADC_CH_MAX][STM32_ADC_CH_SZ];
 	u32			num_diff;
 	int			int_ch[STM32_ADC_INT_CH_NB];
+	int			nsmps;
 };
 
 struct stm32_adc_diff_channel {
···
 	return ret;
 }
 
-static int stm32_adc_of_xlate(struct iio_dev *indio_dev,
-			      const struct of_phandle_args *iiospec)
+static int stm32_adc_fwnode_xlate(struct iio_dev *indio_dev,
+				  const struct fwnode_reference_args *iiospec)
 {
 	int i;
 
···
 	.hwfifo_set_watermark = stm32_adc_set_watermark,
 	.update_scan_mode = stm32_adc_update_scan_mode,
 	.debugfs_reg_access = stm32_adc_debugfs_reg_access,
-	.of_xlate = stm32_adc_of_xlate,
+	.fwnode_xlate = stm32_adc_fwnode_xlate,
 };
 
 static unsigned int stm32_adc_dma_residue(struct stm32_adc *adc)
···
 	{},
 };
 
-static int stm32_adc_of_get_resolution(struct iio_dev *indio_dev)
+static int stm32_adc_fw_get_resolution(struct iio_dev *indio_dev)
 {
-	struct device_node *node = indio_dev->dev.of_node;
+	struct device *dev = &indio_dev->dev;
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	unsigned int i;
 	u32 res;
 
-	if (of_property_read_u32(node, "assigned-resolution-bits", &res))
+	if (device_property_read_u32(dev, "assigned-resolution-bits", &res))
 		res = adc->cfg->adc_info->resolutions[0];
 
 	for (i = 0; i < adc->cfg->adc_info->num_res; i++)
···
 
 static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm32_adc *adc)
 {
-	struct device_node *node = indio_dev->dev.of_node;
+	struct device *dev = &indio_dev->dev;
 	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
 	int num_channels = 0, ret;
 
-	ret = of_property_count_u32_elems(node, "st,adc-channels");
+	ret = device_property_count_u32(dev, "st,adc-channels");
 	if (ret > adc_info->max_channels) {
 		dev_err(&indio_dev->dev, "Bad st,adc-channels?\n");
 		return -EINVAL;
···
 		num_channels += ret;
 	}
 
-	ret = of_property_count_elems_of_size(node, "st,adc-diff-channels",
-					      sizeof(struct stm32_adc_diff_channel));
+	/*
+	 * each st,adc-diff-channels is a group of 2 u32 so we divide @ret
+	 * to get the *real* number of channels.
+	 */
+	ret = device_property_count_u32(dev, "st,adc-diff-channels");
+	if (ret < 0)
+		return ret;
+
+	ret /= (int)(sizeof(struct stm32_adc_diff_channel) / sizeof(u32));
 	if (ret > adc_info->max_channels) {
 		dev_err(&indio_dev->dev, "Bad st,adc-diff-channels?\n");
 		return -EINVAL;
···
 	}
 
 	/* Optional sample time is provided either for each, or all channels */
-	ret = of_property_count_u32_elems(node, "st,min-sample-time-nsecs");
-	if (ret > 1 && ret != num_channels) {
+	adc->nsmps = device_property_count_u32(dev, "st,min-sample-time-nsecs");
+	if (adc->nsmps > 1 && adc->nsmps != num_channels) {
 		dev_err(&indio_dev->dev, "Invalid st,min-sample-time-nsecs\n");
 		return -EINVAL;
 	}
···
 
 static int stm32_adc_legacy_chan_init(struct iio_dev *indio_dev,
 				      struct stm32_adc *adc,
-				      struct iio_chan_spec *channels)
+				      struct iio_chan_spec *channels,
+				      int nchans)
 {
-	struct device_node *node = indio_dev->dev.of_node;
 	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
 	struct stm32_adc_diff_channel diff[STM32_ADC_CH_MAX];
+	struct device *dev = &indio_dev->dev;
 	u32 num_diff = adc->num_diff;
 	int size = num_diff * sizeof(*diff) / sizeof(u32);
-	int scan_index = 0, val, ret, i;
-	struct property *prop;
-	const __be32 *cur;
-	u32 smp = 0;
+	int scan_index = 0, ret, i, c;
+	u32 smp = 0, smps[STM32_ADC_CH_MAX], chans[STM32_ADC_CH_MAX];
 
 	if (num_diff) {
-		ret = of_property_read_u32_array(node, "st,adc-diff-channels",
-						 (u32 *)diff, size);
+		ret = device_property_read_u32_array(dev, "st,adc-diff-channels",
+						     (u32 *)diff, size);
 		if (ret) {
 			dev_err(&indio_dev->dev, "Failed to get diff channels %d\n", ret);
 			return ret;
···
 		}
 	}
 
-	of_property_for_each_u32(node, "st,adc-channels", prop, cur, val) {
-		if (val >= adc_info->max_channels) {
-			dev_err(&indio_dev->dev, "Invalid channel %d\n", val);
+	ret = device_property_read_u32_array(dev, "st,adc-channels", chans,
+					     nchans);
+	if (ret)
+		return ret;
+
+	for (c = 0; c < nchans; c++) {
+		if (chans[c] >= adc_info->max_channels) {
+			dev_err(&indio_dev->dev, "Invalid channel %d\n",
+				chans[c]);
 			return -EINVAL;
 		}
 
 		/* Channel can't be configured both as single-ended & diff */
 		for (i = 0; i < num_diff; i++) {
-			if (val == diff[i].vinp) {
-				dev_err(&indio_dev->dev, "channel %d misconfigured\n",	val);
+			if (chans[c] == diff[i].vinp) {
+				dev_err(&indio_dev->dev, "channel %d misconfigured\n",	chans[c]);
 				return -EINVAL;
 			}
 		}
-		stm32_adc_chan_init_one(indio_dev, &channels[scan_index], val,
-					0, scan_index, false);
+		stm32_adc_chan_init_one(indio_dev, &channels[scan_index],
+					chans[c], 0, scan_index, false);
 		scan_index++;
+	}
+
+	if (adc->nsmps > 0) {
+		ret = device_property_read_u32_array(dev, "st,min-sample-time-nsecs",
+						     smps, adc->nsmps);
+		if (ret)
+			return ret;
 	}
 
 	for (i = 0; i < scan_index; i++) {
 		/*
-		 * Using of_property_read_u32_index(), smp value will only be
-		 * modified if valid u32 value can be decoded. This allows to
-		 * get either no value, 1 shared value for all indexes, or one
-		 * value per channel.
+		 * This check is used with the above logic so that smp value
+		 * will only be modified if valid u32 value can be decoded. This
+		 * allows to get either no value, 1 shared value for all indexes,
+		 * or one value per channel. The point is to have the same
+		 * behavior as 'of_property_read_u32_index()'.
 		 */
-		of_property_read_u32_index(node, "st,min-sample-time-nsecs", i, &smp);
+		if (i < adc->nsmps)
+			smp = smps[i];
 
 		/* Prepare sampling time settings */
 		stm32_adc_smpr_init(adc, channels[i].channel, smp);
···
 				       struct stm32_adc *adc,
 				       struct iio_chan_spec *channels)
 {
-	struct device_node *node = indio_dev->dev.of_node;
 	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
-	struct device_node *child;
+	struct fwnode_handle *child;
 	const char *name;
 	int val, scan_index = 0, ret;
 	bool differential;
 	u32 vin[2];
 
-	for_each_available_child_of_node(node, child) {
-		ret = of_property_read_u32(child, "reg", &val);
+	device_for_each_child_node(&indio_dev->dev, child) {
+		ret = fwnode_property_read_u32(child, "reg", &val);
 		if (ret) {
 			dev_err(&indio_dev->dev, "Missing channel index %d\n", ret);
 			goto err;
 		}
 
-		ret = of_property_read_string(child, "label", &name);
+		ret = fwnode_property_read_string(child, "label", &name);
 		/* label is optional */
 		if (!ret) {
 			if (strlen(name) >= STM32_ADC_CH_SZ) {
···
 		}
 
 		differential = false;
-		ret = of_property_read_u32_array(child, "diff-channels", vin, 2);
+		ret = fwnode_property_read_u32_array(child, "diff-channels", vin, 2);
 		/* diff-channels is optional */
 		if (!ret) {
 			differential = true;
···
 		stm32_adc_chan_init_one(indio_dev, &channels[scan_index], val,
 					vin[1], scan_index, differential);
 
-		ret = of_property_read_u32(child, "st,min-sample-time-ns", &val);
+		ret = fwnode_property_read_u32(child, "st,min-sample-time-ns", &val);
 		/* st,min-sample-time-ns is optional */
 		if (!ret) {
 			stm32_adc_smpr_init(adc, channels[scan_index].channel, val);
···
 	return scan_index;
 
 err:
-	of_node_put(child);
+	fwnode_handle_put(child);
 
 	return ret;
 }
 
-static int stm32_adc_chan_of_init(struct iio_dev *indio_dev, bool timestamping)
+static int stm32_adc_chan_fw_init(struct iio_dev *indio_dev, bool timestamping)
 {
-	struct device_node *node = indio_dev->dev.of_node;
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
 	struct iio_chan_spec *channels;
···
 	for (i = 0; i < STM32_ADC_INT_CH_NB; i++)
 		adc->int_ch[i] = STM32_ADC_INT_CH_NONE;
 
-	num_channels = of_get_available_child_count(node);
+	num_channels = device_get_child_node_count(&indio_dev->dev);
 	/* If no channels have been found, fallback to channels legacy properties. */
 	if (!num_channels) {
 		legacy = true;
···
 		return -ENOMEM;
 
 	if (legacy)
-		ret = stm32_adc_legacy_chan_init(indio_dev, adc, channels);
+		ret = stm32_adc_legacy_chan_init(indio_dev, adc, channels,
+						 num_channels);
 	else
 		ret = stm32_adc_generic_chan_init(indio_dev, adc, channels);
 	if (ret < 0)
···
 	bool timestamping = false;
 	int ret;
 
-	if (!pdev->dev.of_node)
-		return -ENODEV;
-
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc));
 	if (!indio_dev)
 		return -ENOMEM;
···
 	adc->common = dev_get_drvdata(pdev->dev.parent);
 	spin_lock_init(&adc->lock);
 	init_completion(&adc->completion);
-	adc->cfg = (const struct stm32_adc_cfg *)
-		of_match_device(dev->driver->of_match_table, dev)->data;
+	adc->cfg = device_get_match_data(dev);
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.of_node = pdev->dev.of_node;
+	device_set_node(&indio_dev->dev, dev_fwnode(&pdev->dev));
 	indio_dev->info = &stm32_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_HARDWARE_TRIGGERED;
 
 	platform_set_drvdata(pdev, indio_dev);
 
-	ret = of_property_read_u32(pdev->dev.of_node, "reg", &adc->offset);
+	ret = device_property_read_u32(dev, "reg", &adc->offset);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "missing reg property\n");
 		return -EINVAL;
···
 		}
 	}
 
-	ret = stm32_adc_of_get_resolution(indio_dev);
+	ret = stm32_adc_fw_get_resolution(indio_dev);
 	if (ret < 0)
 		return ret;
 
···
 		timestamping = true;
 	}
 
-	ret = stm32_adc_chan_of_init(indio_dev, timestamping);
+	ret = stm32_adc_chan_fw_init(indio_dev, timestamping);
 	if (ret < 0)
 		goto err_dma_disable;
 

drivers/iio/adc/ti-ads131e08.c

···
 	regulator_disable(st->vref_reg);
 }
 
-static void ads131e08_clk_disable(void *data)
-{
-	struct ads131e08_state *st = data;
-
-	clk_disable_unprepare(st->adc_clk);
-}
-
 static int ads131e08_probe(struct spi_device *spi)
 {
 	const struct ads131e08_info *info;
···
 		st->vref_reg = NULL;
 	}
 
-	st->adc_clk = devm_clk_get(&spi->dev, "adc-clk");
+	st->adc_clk = devm_clk_get_enabled(&spi->dev, "adc-clk");
 	if (IS_ERR(st->adc_clk))
 		return dev_err_probe(&spi->dev, PTR_ERR(st->adc_clk),
 				     "failed to get the ADC clock\n");
-
-	ret = clk_prepare_enable(st->adc_clk);
-	if (ret) {
-		dev_err(&spi->dev, "failed to prepare/enable the ADC clock\n");
-		return ret;
-	}
-
-	ret = devm_add_action_or_reset(&spi->dev, ads131e08_clk_disable, st);
-	if (ret)
-		return ret;
 
 	adc_clk_hz = clk_get_rate(st->adc_clk);
 	if (!adc_clk_hz) {

drivers/iio/adc/ti-tsc2046.c

···
 #include <linux/bitfield.h>
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
+#include <linux/units.h>
 
 #include <asm/unaligned.h>
 
···
 struct tsc2046_adc_priv {
 	struct spi_device *spi;
 	const struct tsc2046_adc_dcfg *dcfg;
+	struct regulator *vref_reg;
 
 	struct iio_trigger *trig;
 	struct hrtimer trig_timer;
···
 	u32 scan_interval_us;
 	u32 time_per_scan_us;
 	u32 time_per_bit_ns;
+	unsigned int vref_mv;
 
 	struct tsc2046_adc_ch_cfg ch_cfg[TI_TSC2046_MAX_CHAN];
 };
···
 	case TI_TSC2046_ADDR_AUX:
 	case TI_TSC2046_ADDR_VBAT:
 	case TI_TSC2046_ADDR_TEMP0:
-		pd |= TI_TSC2046_SER | TI_TSC2046_PD1_VREF_ON;
+		pd |= TI_TSC2046_SER;
+		if (!priv->vref_reg)
+			pd |= TI_TSC2046_PD1_VREF_ON;
 	}
 
 	return TI_TSC2046_START | FIELD_PREP(TI_TSC2046_ADDR, ch_idx) | pd;
···
 		 * So, it is better to use external voltage-divider driver
 		 * instead, which is calculating complete chain.
 		 */
-		*val = TI_TSC2046_INT_VREF;
+		*val = priv->vref_mv;
 		*val2 = chan->scan_type.realbits;
 		return IIO_VAL_FRACTIONAL_LOG2;
 	}
···
 	}
 }
 
+static void tsc2046_adc_regulator_disable(void *data)
+{
+	struct tsc2046_adc_priv *priv = data;
+
+	regulator_disable(priv->vref_reg);
+}
+
+static int tsc2046_adc_configure_regulator(struct tsc2046_adc_priv *priv)
+{
+	struct device *dev = &priv->spi->dev;
+	int ret;
+
+	priv->vref_reg = devm_regulator_get_optional(dev, "vref");
+	if (IS_ERR(priv->vref_reg)) {
+		/* If regulator exists but can't be get, return an error */
+		if (PTR_ERR(priv->vref_reg) != -ENODEV)
+			return PTR_ERR(priv->vref_reg);
+		priv->vref_reg = NULL;
+	}
+	if (!priv->vref_reg) {
+		/* Use internal reference */
+		priv->vref_mv = TI_TSC2046_INT_VREF;
+		return 0;
+	}
+
+	ret = regulator_enable(priv->vref_reg);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, tsc2046_adc_regulator_disable,
+				       priv);
+	if (ret)
+		return ret;
+
+	ret = regulator_get_voltage(priv->vref_reg);
+	if (ret < 0)
+		return ret;
+
+	priv->vref_mv = ret / MILLI;
+
+	return 0;
+}
+
 static int tsc2046_adc_probe(struct spi_device *spi)
 {
 	const struct tsc2046_adc_dcfg *dcfg;
···
 	}
 
 	dcfg = device_get_match_data(dev);
+	if (!dcfg) {
+		const struct spi_device_id *id = spi_get_device_id(spi);
+
+		dcfg = (const struct tsc2046_adc_dcfg *)id->driver_data;
+	}
 	if (!dcfg)
 		return -EINVAL;
 
···
 	indio_dev->channels = dcfg->channels;
 	indio_dev->num_channels = dcfg->num_channels;
 	indio_dev->info = &tsc2046_adc_info;
+
+	ret = tsc2046_adc_configure_regulator(priv);
+	if (ret)
+		return ret;
 
 	tsc2046_adc_parse_fwnode(priv);
 
···
 };
 MODULE_DEVICE_TABLE(of, ads7950_of_table);
 
+static const struct spi_device_id tsc2046_adc_spi_ids[] = {
+	{ "tsc2046e-adc", (unsigned long)&tsc2046_adc_dcfg_tsc2046e },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, tsc2046_adc_spi_ids);
+
 static struct spi_driver tsc2046_adc_driver = {
 	.driver = {
 		.name = "tsc2046",
 		.of_match_table = ads7950_of_table,
 	},
+	.id_table = tsc2046_adc_spi_ids,
 	.probe = tsc2046_adc_probe,
 };
 module_spi_driver(tsc2046_adc_driver);

drivers/iio/adc/xilinx-ams.c

···
 };
 MODULE_DEVICE_TABLE(of, ams_of_match_table);
 
-static void ams_clk_disable_unprepare(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static int ams_probe(struct platform_device *pdev)
 {
 	struct iio_dev *indio_dev;
···
 	if (IS_ERR(ams->base))
 		return PTR_ERR(ams->base);
 
-	ams->clk = devm_clk_get(&pdev->dev, NULL);
+	ams->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(ams->clk))
 		return PTR_ERR(ams->clk);
-
-	ret = clk_prepare_enable(ams->clk);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&pdev->dev, ams_clk_disable_unprepare, ams->clk);
-	if (ret < 0)
-		return ret;
 
 	ret = devm_delayed_work_autocancel(&pdev->dev, &ams->ams_unmask_work,
 					   ams_unmask_worker);

drivers/iio/adc/xilinx-xadc-core.c

···
 	[XADC_TYPE_US] = "xilinx-system-monitor",
 };
 
-static void xadc_clk_disable_unprepare(void *data)
-{
-	struct clk *clk = data;
-
-	clk_disable_unprepare(clk);
-}
-
 static void xadc_cancel_delayed_work(void *data)
 {
 	struct delayed_work *work = data;
···
 		}
 	}
 
-	xadc->clk = devm_clk_get(dev, NULL);
+	xadc->clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(xadc->clk))
 		return PTR_ERR(xadc->clk);
-
-	ret = clk_prepare_enable(xadc->clk);
-	if (ret)
-		return ret;
-
-	ret = devm_add_action_or_reset(dev,
-				       xadc_clk_disable_unprepare, xadc->clk);
-	if (ret)
-		return ret;
 
 	/*
 	 * Make sure not to exceed the maximum samplerate since otherwise the

drivers/iio/addac/Kconfig

···
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad74413r.
 
+config STX104
+	tristate "Apex Embedded Systems STX104 driver"
+	depends on PC104 && X86
+	select ISA_BUS_API
+	select GPIOLIB
+	help
+	  Say yes here to build support for the Apex Embedded Systems STX104
+	  integrated analog PC/104 card.
+
+	  This driver supports the 16 channels of single-ended (8 channels of
+	  differential) analog inputs, 2 channels of analog output, 4 digital
+	  inputs, and 4 digital outputs provided by the STX104.
+
+	  The base port addresses for the devices may be configured via the base
+	  array module parameter.
+
 endmenu

drivers/iio/addac/Makefile

···
 
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_AD74413R) += ad74413r.o
+obj-$(CONFIG_STX104) += stx104.o

drivers/iio/cdc/Kconfig

···
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad7150.
 
+config AD7746
+	tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver"
+	depends on I2C
+	help
+	  Say yes here to build support for Analog Devices capacitive sensors.
+	  (AD7745, AD7746, AD7747) Provides direct access via sysfs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7746.
+
 endmenu

drivers/iio/cdc/Makefile

···
 #
 
 obj-$(CONFIG_AD7150) += ad7150.o
+obj-$(CONFIG_AD7746) += ad7746.o

drivers/iio/common/scmi_sensors/scmi_iio.c

···
 #include <linux/scmi_protocol.h>
 #include <linux/time.h>
 #include <linux/types.h>
+#include <linux/units.h>
 
 #define SCMI_IIO_NUM_OF_AXIS 3
 
···
 static int scmi_iio_set_odr_val(struct iio_dev *iio_dev, int val, int val2)
 {
 	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
-	const unsigned long UHZ_PER_HZ = 1000000UL;
 	u64 sec, mult, uHz, sf;
 	u32 sensor_config;
 	char buf[32];
···
 		return err;
 	}
 
-	uHz = val * UHZ_PER_HZ + val2;
+	uHz = val * MICROHZ_PER_HZ + val2;
 
 	/*
 	 * The seconds field in the sensor interval in SCMI is 16 bits long
···
 	 * count the number of characters
 	 */
 	sf = (u64)uHz * 0xFFFF;
-	do_div(sf,  UHZ_PER_HZ);
+	do_div(sf,  MICROHZ_PER_HZ);
 	mult = scnprintf(buf, sizeof(buf), "%llu", sf) - 1;
 
-	sec = int_pow(10, mult) * UHZ_PER_HZ;
+	sec = int_pow(10, mult) * MICROHZ_PER_HZ;
 	do_div(sec, uHz);
 	if (sec == 0) {
 		dev_err(&iio_dev->dev,

drivers/iio/common/st_sensors/st_sensors_core.c

···
 		return;
 
 	/* The name from the match takes precedence if present */
-	strlcpy(name, match, len);
+	strscpy(name, match, len);
 }
 EXPORT_SYMBOL_NS(st_sensors_dev_name_probe, IIO_ST_SENSORS);
 

drivers/iio/frequency/adf4371.c

···
 	return regmap_bulk_write(st->regmap, ADF4371_REG(0x30), st->buf, 5);
 }
 
-static void adf4371_clk_disable(void *data)
-{
-	struct adf4371_state *st = data;
-
-	clk_disable_unprepare(st->clkin);
-}
-
 static int adf4371_probe(struct spi_device *spi)
 {
 	const struct spi_device_id *id = spi_get_device_id(spi);
···
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
 
-	st->clkin = devm_clk_get(&spi->dev, "clkin");
+	st->clkin = devm_clk_get_enabled(&spi->dev, "clkin");
 	if (IS_ERR(st->clkin))
 		return PTR_ERR(st->clkin);
-
-	ret = clk_prepare_enable(st->clkin);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, adf4371_clk_disable, st);
-	if (ret)
-		return ret;
 
 	st->clkin_freq = clk_get_rate(st->clkin);
 

drivers/iio/frequency/admv1014.c

···
 	chip_id = FIELD_GET(ADMV1014_CHIP_ID_MSK, chip_id);
 	if (chip_id != ADMV1014_CHIP_ID) {
 		dev_err(&spi->dev, "Invalid Chip ID.\n");
-		ret = -EINVAL;
-		return ret;
+		return -EINVAL;
 	}
 
 	ret = __admv1014_spi_update_bits(st, ADMV1014_REG_QUAD,

drivers/iio/frequency/adrf6780.c

···
 	st->vdet_out_en = device_property_read_bool(&spi->dev, "adi,vdet-out-en");
 }
 
-static void adrf6780_clk_disable(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static void adrf6780_powerdown(void *data)
 {
 	/* Disable all components in the Enable Register */
···
 
 	adrf6780_properties_parse(st);
 
-	st->clkin = devm_clk_get(&spi->dev, "lo_in");
+	st->clkin = devm_clk_get_enabled(&spi->dev, "lo_in");
 	if (IS_ERR(st->clkin))
 		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
 				     "failed to get the LO input clock\n");
-
-	ret = clk_prepare_enable(st->clkin);
-	if (ret)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, adrf6780_clk_disable,
-				       st->clkin);
-	if (ret)
-		return ret;
 
 	mutex_init(&st->lock);
 

drivers/iio/imu/adis16475.c

···
 	return IRQ_HANDLED;
 }
 
-static void adis16475_disable_clk(void *data)
-{
-	clk_disable_unprepare((struct clk *)data);
-}
-
 static int adis16475_config_sync_mode(struct adis16475 *st)
 {
 	int ret;
···
 
 	/* All the other modes require external input signal */
 	if (sync->sync_mode != ADIS16475_SYNC_OUTPUT) {
-		struct clk *clk = devm_clk_get(dev, NULL);
+		struct clk *clk = devm_clk_get_enabled(dev, NULL);
 
 		if (IS_ERR(clk))
 			return PTR_ERR(clk);
-
-		ret = clk_prepare_enable(clk);
-		if (ret)
-			return ret;
-
-		ret = devm_add_action_or_reset(dev, adis16475_disable_clk, clk);
-		if (ret)
-			return ret;
 
 		st->clk_freq = clk_get_rate(clk);
 		if (st->clk_freq < sync->min_rate ||

drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c

···
 
 			sub_elem = &elem->package.elements[j];
 			if (sub_elem->type == ACPI_TYPE_STRING)
-				strlcpy(info->type, sub_elem->string.pointer,
+				strscpy(info->type, sub_elem->string.pointer,
 					sizeof(info->type));
 			else if (sub_elem->type == ACPI_TYPE_INTEGER) {
 				if (sub_elem->integer.value != client->addr) {
···
 				char *name;
 
 				info.addr = secondary;
-				strlcpy(info.type, dev_name(&adev->dev),
+				strscpy(info.type, dev_name(&adev->dev),
 					sizeof(info.type));
 				name = strchr(info.type, ':');
 				if (name)

drivers/iio/industrialio-buffer.c

···
 	 * to verify.
 	 */
 	if (remove_buffer && !insert_buffer &&
-		list_is_singular(&iio_dev_opaque->buffer_list))
-			return 0;
+	    list_is_singular(&iio_dev_opaque->buffer_list))
+		return 0;
 
 	modes = indio_dev->modes;
 
···
 static void iio_buffer_demux_free(struct iio_buffer *buffer)
 {
 	struct iio_demux_table *p, *q;
+
 	list_for_each_entry_safe(p, q, &buffer->demux_list, l) {
 		list_del(&p->l);
 		kfree(p);

drivers/iio/industrialio-core.c

···
 	[IIO_CHAN_INFO_OVERSAMPLING_RATIO] = "oversampling_ratio",
 	[IIO_CHAN_INFO_THERMOCOUPLE_TYPE] = "thermocouple_type",
 	[IIO_CHAN_INFO_CALIBAMBIENT] = "calibambient",
+	[IIO_CHAN_INFO_ZEROPOINT] = "zeropoint",
 };
 /**
  * iio_device_id() - query the unique ID for the device
···
 struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
 	return iio_dev_opaque->debugfs_dentry;
 }
 EXPORT_SYMBOL_GPL(iio_get_debugfs_dentry);
···
 static void iio_device_unregister_debugfs(struct iio_dev *indio_dev)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
 	debugfs_remove_recursive(iio_dev_opaque->debugfs_dentry);
 }
 
···
 	int ret = 0;
 	char *name = NULL;
 	char *full_postfix;
+
 	sysfs_attr_init(&dev_attr->attr);
 
 	/* Build up postfix of <extend_name>_<modifier>_postfix */
···
 
 	ret = iio_device_add_info_mask_type_avail(indio_dev, chan,
 						  IIO_SEPARATE,
-						  &chan->
-						  info_mask_separate_available);
+						  &chan->info_mask_separate_available);
 	if (ret < 0)
 		return ret;
 	attrcount += ret;
···
 
 	ret = iio_device_add_info_mask_type_avail(indio_dev, chan,
 						  IIO_SHARED_BY_TYPE,
-						  &chan->
-						  info_mask_shared_by_type_available);
+						  &chan->info_mask_shared_by_type_available);
 	if (ret < 0)
 		return ret;
 	attrcount += ret;
···
 
 	if (chan->ext_info) {
 		unsigned int i = 0;
+
 		for (ext_info = chan->ext_info; ext_info->name; ext_info++) {
 			ret = __iio_add_chan_devattr(ext_info->name,
 					chan,
···
 			 char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+
 	return sysfs_emit(buf, "%s\n", indio_dev->name);
 }
 
···
 			  char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+
 	return sysfs_emit(buf, "%s\n", indio_dev->label);
 }
 
···
 
 	iio_device_detach_buffers(indio_dev);
 
+	lockdep_unregister_key(&iio_dev_opaque->mlock_key);
+
 	ida_free(&iio_ida, iio_dev_opaque->id);
 	kfree(iio_dev_opaque);
 }
···
 
 	INIT_LIST_HEAD(&iio_dev_opaque->buffer_list);
 	INIT_LIST_HEAD(&iio_dev_opaque->ioctl_handlers);
+
+	lockdep_register_key(&iio_dev_opaque->mlock_key);
+	lockdep_set_class(&indio_dev->mlock, &iio_dev_opaque->mlock_key);
 
 	return indio_dev;
 }
···
 	struct iio_dev_opaque *iio_dev_opaque =
 		container_of(inode->i_cdev, struct iio_dev_opaque, chrdev);
 	struct iio_dev *indio_dev = &iio_dev_opaque->indio_dev;
+
 	kfree(ib);
 	clear_bit(IIO_BUSY_BIT_POS, &iio_dev_opaque->flags);
 	iio_device_put(indio_dev);

drivers/iio/industrialio-event.c

···
 	[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
 	[IIO_EV_TYPE_CHANGE] = "change",
 	[IIO_EV_TYPE_MAG_REFERENCED] = "mag_referenced",
+	[IIO_EV_TYPE_GESTURE] = "gesture",
 };
 
 static const char * const iio_ev_dir_text[] = {
 	[IIO_EV_DIR_EITHER] = "either",
 	[IIO_EV_DIR_RISING] = "rising",
-	[IIO_EV_DIR_FALLING] = "falling"
+	[IIO_EV_DIR_FALLING] = "falling",
+	[IIO_EV_DIR_SINGLETAP] = "singletap",
+	[IIO_EV_DIR_DOUBLETAP] = "doubletap",
 };
 
 static const char * const iio_ev_info_text[] = {
···
 	[IIO_EV_INFO_HIGH_PASS_FILTER_3DB] = "high_pass_filter_3db",
 	[IIO_EV_INFO_LOW_PASS_FILTER_3DB] = "low_pass_filter_3db",
 	[IIO_EV_INFO_TIMEOUT] = "timeout",
+	[IIO_EV_INFO_RESET_TIMEOUT] = "reset_timeout",
+	[IIO_EV_INFO_TAP2_MIN_DELAY] = "tap2_min_delay",
 };
 
 static enum iio_event_direction iio_ev_attr_dir(struct iio_dev_attr *attr)
···
 	enum iio_shared_by shared_by, const unsigned long *mask)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
-	ssize_t (*show)(struct device *, struct device_attribute *, char *);
-	ssize_t (*store)(struct device *, struct device_attribute *,
-		const char *, size_t);
+	ssize_t (*show)(struct device *dev, struct device_attribute *attr,
+		char *buf);
+	ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t len);
 	unsigned int attrcount = 0;
 	unsigned int i;
 	char *postfix;

drivers/iio/industrialio-trigger.c

···
 			 char *buf)
 {
 	struct iio_trigger *trig = to_iio_trigger(dev);
+
 	return sysfs_emit(buf, "%s\n", trig->name);
 }
 

drivers/iio/inkern.c

···
  */
 #include <linux/err.h>
 #include <linux/export.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/iio-opaque.h>
···
 	int i = 0, ret = 0;
 	struct iio_map_internal *mapi;
 
-	if (maps == NULL)
+	if (!maps)
 		return 0;
 
 	mutex_lock(&iio_map_list_lock);
-	while (maps[i].consumer_dev_name != NULL) {
+	while (maps[i].consumer_dev_name) {
 		mapi = kzalloc(sizeof(*mapi), GFP_KERNEL);
-		if (mapi == NULL) {
+		if (!mapi) {
 			ret = -ENOMEM;
 			goto error_ret;
 		}
···
 	return ret;
 }
 EXPORT_SYMBOL_GPL(iio_map_array_register);
-
 
 /*
  * Remove all map entries associated with the given iio device
···
 	return chan;
 }
 
-#ifdef CONFIG_OF
-
-static int iio_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data && dev->type == &iio_device_type;
-}
-
 /**
- * __of_iio_simple_xlate - translate iiospec to the IIO channel index
+ * __fwnode_iio_simple_xlate - translate iiospec to the IIO channel index
  * @indio_dev:	pointer to the iio_dev structure
  * @iiospec:	IIO specifier as found in the device tree
  *
···
  * whether IIO index is less than num_channels (that is specified in the
  * iio_dev).
  */
-static int __of_iio_simple_xlate(struct iio_dev *indio_dev,
-				const struct of_phandle_args *iiospec)
+static int __fwnode_iio_simple_xlate(struct iio_dev *indio_dev,
+				     const struct fwnode_reference_args *iiospec)
 {
-	if (!iiospec->args_count)
+	if (!iiospec->nargs)
 		return 0;
 
 	if (iiospec->args[0] >= indio_dev->num_channels) {
-		dev_err(&indio_dev->dev, "invalid channel index %u\n",
+		dev_err(&indio_dev->dev, "invalid channel index %llu\n",
 			iiospec->args[0]);
 		return -EINVAL;
 	}
···
 	return iiospec->args[0];
 }
 
-static int __of_iio_channel_get(struct iio_channel *channel,
-				struct device_node *np, int index)
+static int __fwnode_iio_channel_get(struct iio_channel *channel,
+				    struct fwnode_handle *fwnode, int index)
 {
+	struct fwnode_reference_args iiospec;
 	struct device *idev;
 	struct iio_dev *indio_dev;
 	int err;
-	struct of_phandle_args iiospec;
 
-	err = of_parse_phandle_with_args(np, "io-channels",
-					 "#io-channel-cells",
-					 index, &iiospec);
+	err = fwnode_property_get_reference_args(fwnode, "io-channels",
+						 "#io-channel-cells", 0,
+						 index, &iiospec);
 	if (err)
 		return err;
 
-	idev = bus_find_device(&iio_bus_type, NULL, iiospec.np,
-			       iio_dev_node_match);
-	of_node_put(iiospec.np);
-	if (idev == NULL)
+	idev = bus_find_device_by_fwnode(&iio_bus_type, iiospec.fwnode);
+	if (!idev) {
+		fwnode_handle_put(iiospec.fwnode);
 		return -EPROBE_DEFER;
+	}
 
 	indio_dev = dev_to_iio_dev(idev);
 	channel->indio_dev = indio_dev;
-	if (indio_dev->info->of_xlate)
-		index = indio_dev->info->of_xlate(indio_dev, &iiospec);
+	if (indio_dev->info->fwnode_xlate)
+		index = indio_dev->info->fwnode_xlate(indio_dev, &iiospec);
 	else
-		index = __of_iio_simple_xlate(indio_dev, &iiospec);
+		index = __fwnode_iio_simple_xlate(indio_dev, &iiospec);
+	fwnode_handle_put(iiospec.fwnode);
 	if (index < 0)
 		goto err_put;
 	channel->channel = &indio_dev->channels[index];
···
 	return index;
 }
 
-static struct iio_channel *of_iio_channel_get(struct device_node *np, int index)
+static struct iio_channel *fwnode_iio_channel_get(struct fwnode_handle *fwnode,
+						  int index)
 {
 	struct iio_channel *channel;
 	int err;
···
 		return ERR_PTR(-EINVAL);
 
 	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
-	if (channel == NULL)
+	if (!channel)
 		return ERR_PTR(-ENOMEM);
 
-	err = __of_iio_channel_get(channel, np, index);
+	err = __fwnode_iio_channel_get(channel, fwnode, index);
 	if (err)
 		goto err_free_channel;
 
···
 	return ERR_PTR(err);
 }
 
-struct iio_channel *of_iio_channel_get_by_name(struct device_node *np,
-					       const char *name)
+static struct iio_channel *
+__fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode, const char *name)
 {
-	struct iio_channel *chan = NULL;
+	struct iio_channel *chan;
+	int index = 0;
 
-	/* Walk up the tree of devices looking for a matching iio channel */
-	while (np) {
-		int index = 0;
+	/*
+	 * For named iio channels, first look up the name in the
+	 * "io-channel-names" property.  If it cannot be found, the
+	 * index will be an error code, and fwnode_iio_channel_get()
+	 * will fail.
+	 */
+	if (name)
+		index = fwnode_property_match_string(fwnode, "io-channel-names",
+						     name);
 
-		/*
-		 * For named iio channels, first look up the name in the
-		 * "io-channel-names" property.  If it cannot be found, the
-		 * index will be an error code, and of_iio_channel_get()
-		 * will fail.
-		 */
-		if (name)
-			index = of_property_match_string(np, "io-channel-names",
-							 name);
-		chan = of_iio_channel_get(np, index);
-		if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER)
-			break;
-		else if (name && index >= 0) {
-			pr_err("ERROR: could not get IIO channel %pOF:%s(%i)\n",
-				np, name ? name : "", index);
-			return NULL;
+	chan = fwnode_iio_channel_get(fwnode, index);
+	if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER)
+		return chan;
+	if (name) {
+		if (index >= 0) {
+			pr_err("ERROR: could not get IIO channel %pfw:%s(%i)\n",
+			       fwnode, name, index);
+			/*
+			 * In this case, we found 'name' in 'io-channel-names'
+			 * but somehow we still fail so that we should not proceed
+			 * with any other lookup. Hence, explicitly return -EINVAL
+			 * (maybe not the better error code) so that the caller
+			 * won't do a system lookup.
+			 */
+			return ERR_PTR(-EINVAL);
 		}
-
 		/*
-		 * No matching IIO channel found on this node.
-		 * If the parent node has a "io-channel-ranges" property,
-		 * then we can try one of its channels.
+		 * If index < 0, then fwnode_property_get_reference_args() fails
+		 * with -EINVAL or -ENOENT (ACPI case) which is expected. We
+		 * should not proceed if we get any other error.
 		 */
-		np = np->parent;
-		if (np && !of_get_property(np, "io-channel-ranges", NULL))
-			return NULL;
+		if (PTR_ERR(chan) != -EINVAL && PTR_ERR(chan) != -ENOENT)
+			return chan;
+	} else if (PTR_ERR(chan) != -ENOENT) {
+		/*
+		 * if !name, then we should only proceed the lookup if
+		 * fwnode_property_get_reference_args() returns -ENOENT.
+		 */
+		return chan;
 	}
 
-	return chan;
+	/* so we continue the lookup */
+	return ERR_PTR(-ENODEV);
 }
-EXPORT_SYMBOL_GPL(of_iio_channel_get_by_name);
 
-static struct iio_channel *of_iio_channel_get_all(struct device *dev)
+struct iio_channel *fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode,
+						   const char *name)
 {
+	struct fwnode_handle *parent;
+	struct iio_channel *chan;
+
+	/* Walk up the tree of devices looking for a matching iio channel */
+	chan = __fwnode_iio_channel_get_by_name(fwnode, name);
+	if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV)
+		return chan;
+
+	/*
+	 * No matching IIO channel found on this node.
+	 * If the parent node has a "io-channel-ranges" property,
+	 * then we can try one of its channels.
+	 */
+	fwnode_for_each_parent_node(fwnode, parent) {
+		if (!fwnode_property_present(parent, "io-channel-ranges")) {
+			fwnode_handle_put(parent);
+			return ERR_PTR(-ENODEV);
+		}
+
+		chan = __fwnode_iio_channel_get_by_name(fwnode, name);
+		if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) {
+			fwnode_handle_put(parent);
+ 			return chan;
+		}
+	}
+
+	return ERR_PTR(-ENODEV);
+}
+EXPORT_SYMBOL_GPL(fwnode_iio_channel_get_by_name);
+
+static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev)
+{
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	struct iio_channel *chans;
 	int i, mapind, nummaps = 0;
 	int ret;
 
 	do {
-		ret = of_parse_phandle_with_args(dev->of_node,
-						 "io-channels",
-						 "#io-channel-cells",
-						 nummaps, NULL);
+		ret = fwnode_property_get_reference_args(fwnode, "io-channels",
+							 "#io-channel-cells", 0,
+							 nummaps, NULL);
 		if (ret < 0)
 			break;
 	} while (++nummaps);
 
-	if (nummaps == 0)	/* no error, return NULL to search map table */
-		return NULL;
+	if (nummaps == 0)
+		return ERR_PTR(-ENODEV);
 
 	/* NULL terminated array to save passing size */
 	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
-	if (chans == NULL)
+	if (!chans)
 		return ERR_PTR(-ENOMEM);
 
-	/* Search for OF matches */
+	/* Search for FW matches */
 	for (mapind = 0; mapind < nummaps; mapind++) {
-		ret = __of_iio_channel_get(&chans[mapind], dev->of_node,
-					   mapind);
+		ret = __fwnode_iio_channel_get(&chans[mapind], fwnode, mapind);
 		if (ret)
 			goto error_free_chans;
 	}
···
 	return ERR_PTR(ret);
 }
 
-#else /* CONFIG_OF */
-
-static inline struct iio_channel *of_iio_channel_get_all(struct device *dev)
-{
-	return NULL;
-}
-
-#endif /* CONFIG_OF */
-
 static struct iio_channel *iio_channel_get_sys(const char *name,
 					       const char *channel_name)
 {
···
 	struct iio_channel *channel;
 	int err;
 
-	if (name == NULL && channel_name == NULL)
+	if (!(name || channel_name))
 		return ERR_PTR(-ENODEV);
 
 	/* first find matching entry the channel map */
···
 		break;
 	}
 	mutex_unlock(&iio_map_list_lock);
-	if (c == NULL)
+	if (!c)
 		return ERR_PTR(-ENODEV);
 
 	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
-	if (channel == NULL) {
+	if (!channel) {
 		err = -ENOMEM;
 		goto error_no_mem;
 	}
···
 			iio_chan_spec_from_name(channel->indio_dev,
 						c->map->adc_channel_label);
 
-		if (channel->channel == NULL) {
+		if (!channel->channel) {
 			err = -EINVAL;
 			goto error_no_chan;
 		}
···
 	struct iio_channel *channel;
 
 	if (dev) {
-		channel = of_iio_channel_get_by_name(dev->of_node,
-						     channel_name);
-		if (channel != NULL)
+		channel = fwnode_iio_channel_get_by_name(dev_fwnode(dev),
+							 channel_name);
+		if (!IS_ERR(channel) || PTR_ERR(channel) != -ENODEV)
 			return channel;
 	}
 
···
 }
 EXPORT_SYMBOL_GPL(devm_iio_channel_get);
 
-struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev,
-						    struct device_node *np,
-						    const char *channel_name)
+struct iio_channel *devm_fwnode_iio_channel_get_by_name(struct device *dev,
+							struct fwnode_handle *fwnode,
+							const char *channel_name)
 {
 	struct iio_channel *channel;
 	int ret;
 
-	channel = of_iio_channel_get_by_name(np, channel_name);
+	channel = fwnode_iio_channel_get_by_name(fwnode, channel_name);
 	if (IS_ERR(channel))
 		return channel;
 
···
 
 	return channel;
 }
-EXPORT_SYMBOL_GPL(devm_of_iio_channel_get_by_name);
+EXPORT_SYMBOL_GPL(devm_fwnode_iio_channel_get_by_name);
 
 struct iio_channel *iio_channel_get_all(struct device *dev)
 {
···
 	int mapind = 0;
 	int i, ret;
 
-	if (dev == NULL)
+	if (!dev)
 		return ERR_PTR(-EINVAL);
 
-	chans = of_iio_channel_get_all(dev);
-	if (chans)
+	chans = fwnode_iio_channel_get_all(dev);
+	/*
+	 * We only want to carry on if the error is -ENODEV.  Anything else
+	 * should be reported up the stack.
+	 */
+	if (!IS_ERR(chans) || PTR_ERR(chans) != -ENODEV)
 		return chans;
 
 	name = dev_name(dev);
···
 
 	/* NULL terminated array to save passing size */
 	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
-	if (chans == NULL) {
+	if (!chans) {
 		ret = -ENOMEM;
 		goto error_ret;
 	}
···
 		chans[mapind].channel =
 			iio_chan_spec_from_name(chans[mapind].indio_dev,
 						c->map->adc_channel_label);
-		if (chans[mapind].channel == NULL) {
+		if (!chans[mapind].channel) {
 			ret = -EINVAL;
 			goto error_free_chans;
 		}
···
 EXPORT_SYMBOL_GPL(devm_iio_channel_get_all);
 
 static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
-	enum iio_chan_info_enum info)
+			    enum iio_chan_info_enum info)
 {
 	int unused;
 	int vals[INDIO_MAX_RAW_ELEMENTS];
 	int ret;
 	int val_len = 2;
 
-	if (val2 == NULL)
+	if (!val2)
 		val2 = &unused;
 
 	if (!iio_channel_has_info(chan->channel, info))
···
 					vals, &val_len, info);
 		*val = vals[0];
 		*val2 = vals[1];
-	} else
+	} else {
 		ret = chan->indio_dev->info->read_raw(chan->indio_dev,
 					chan->channel, val, val2, info);
+	}
 
 	return ret;
 }
···
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
···
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
···
 EXPORT_SYMBOL_GPL(iio_read_channel_average_raw);
 
 static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
-	int raw, int *processed, unsigned int scale)
+						 int raw, int *processed,
+						 unsigned int scale)
 {
 	int scale_type, scale_val, scale_val2;
 	int offset_type, offset_val, offset_val2;
···
 	}
 
 	scale_type = iio_channel_read(chan, &scale_val, &scale_val2,
-					IIO_CHAN_INFO_SCALE);
+				      IIO_CHAN_INFO_SCALE);
 	if (scale_type < 0) {
 		/*
 		 * If no channel scaling is available apply consumer scale to
···
 }
 
 int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
-	int *processed, unsigned int scale)
+				 int *processed, unsigned int scale)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	ret = iio_convert_raw_to_processed_unlocked(chan, raw, processed,
-							scale);
+						    scale);
 err_unlock:
 	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
···
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
···
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
···
 	int type;
 
 	ret = iio_read_avail_channel_attribute(chan, vals, &type, length,
-					 IIO_CHAN_INFO_RAW);
+					       IIO_CHAN_INFO_RAW);
 
 	if (ret >= 0 && type != IIO_VAL_INT)
 		/* raw values are assumed to be IIO_VAL_INT */
···
 	/* Need to verify underlying driver has not gone away */
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
···
 	int ret;
 
 	mutex_lock(&iio_dev_opaque->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
···
 }
 EXPORT_SYMBOL_GPL(iio_get_channel_ext_info_count);
 
-static const struct iio_chan_spec_ext_info *iio_lookup_ext_info(
-						const struct iio_channel *chan,
-						const char *attr)
+static const struct iio_chan_spec_ext_info *
+iio_lookup_ext_info(const struct iio_channel *chan, const char *attr)
 {
 	const struct iio_chan_spec_ext_info *ext_info;
 

drivers/iio/light/Kconfig

···
 	  This driver can also be built as a module.  If so, the module
 	  will be called ltr501.
 
+config LTRF216A
+	tristate "Liteon LTRF216A Light Sensor"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  If you say Y or M here, you get support for Liteon LTRF216A
+	  Ambient Light Sensor.
+
+	  If built as a dynamically linked module, it will be called
+	  ltrf216a.
+
 config LV0104CS
 	tristate "LV0104CS Ambient Light Sensor"
 	depends on I2C

drivers/iio/light/Makefile

···
 obj-$(CONFIG_JSA1212)		+= jsa1212.o
 obj-$(CONFIG_SENSORS_LM3533)	+= lm3533-als.o
 obj-$(CONFIG_LTR501)		+= ltr501.o
+obj-$(CONFIG_LTRF216A)		+= ltrf216a.o
 obj-$(CONFIG_LV0104CS)		+= lv0104cs.o
 obj-$(CONFIG_MAX44000)		+= max44000.o
 obj-$(CONFIG_MAX44009)		+= max44009.o

drivers/iio/light/ltrf216a.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * LTRF216A Ambient Light Sensor
+ *
+ * Copyright (C) 2022 Collabora, Ltd.
+ * Author: Shreeya Patel <[e-mail]>
+ *
+ * Copyright (C) 2021 Lite-On Technology Corp (Singapore)
+ * Author: Shi Zhigang <[e-mail]>
+ *
+ * IIO driver for LTRF216A (7-bit I2C slave address 0x53).
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/iopoll.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+
+#include <asm/unaligned.h>
+
+#define LTRF216A_ALS_RESET_MASK		BIT(4)
+#define LTRF216A_ALS_DATA_STATUS	BIT(3)
+#define LTRF216A_ALS_ENABLE_MASK	BIT(1)
+#define LTRF216A_MAIN_CTRL		0x00
+#define LTRF216A_ALS_MEAS_RES		0x04
+#define LTRF216A_ALS_GAIN		0x05
+#define LTRF216A_PART_ID		0x06
+#define LTRF216A_MAIN_STATUS		0x07
+#define LTRF216A_ALS_CLEAR_DATA_0	0x0a
+#define LTRF216A_ALS_CLEAR_DATA_1	0x0b
+#define LTRF216A_ALS_CLEAR_DATA_2	0x0c
+#define LTRF216A_ALS_DATA_0		0x0d
+#define LTRF216A_ALS_DATA_1		0x0e
+#define LTRF216A_ALS_DATA_2		0x0f
+#define LTRF216A_INT_CFG		0x19
+#define LTRF216A_INT_PST		0x1a
+#define LTRF216A_ALS_THRES_UP_0		0x21
+#define LTRF216A_ALS_THRES_UP_1		0x22
+#define LTRF216A_ALS_THRES_UP_2		0x23
+#define LTRF216A_ALS_THRES_LOW_0	0x24
+#define LTRF216A_ALS_THRES_LOW_1	0x25
+#define LTRF216A_ALS_THRES_LOW_2	0x26
+#define LTRF216A_ALS_READ_DATA_DELAY_US	20000
+
+static const int ltrf216a_int_time_available[][2] = {
+	{ 0, 400000 },
+	{ 0, 200000 },
+	{ 0, 100000 },
+	{ 0,  50000 },
+	{ 0,  25000 },
+};
+
+static const int ltrf216a_int_time_reg[][2] = {
+	{ 400, 0x03 },
+	{ 200, 0x13 },
+	{ 100, 0x22 },
+	{  50, 0x31 },
+	{  25, 0x40 },
+};
+
+/*
+ * Window Factor is needed when the device is under Window glass
+ * with coated tinted ink. This is to compensate for the light loss
+ * due to the lower transmission rate of the window glass and helps
+ * in calculating lux.
+ */
+#define LTRF216A_WIN_FAC	1
+
+struct ltrf216a_data {
+	struct regmap *regmap;
+	struct i2c_client *client;
+	u32 int_time;
+	u16 int_time_fac;
+	u8 als_gain_fac;
+	/*
+	 * Protects regmap accesses and makes sure integration time
+	 * remains constant during the measurement of lux.
+	 */
+	struct mutex lock;
+};
+
+static const struct iio_chan_spec ltrf216a_channels[] = {
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_PROCESSED) |
+			BIT(IIO_CHAN_INFO_INT_TIME),
+		.info_mask_separate_available =
+			BIT(IIO_CHAN_INFO_INT_TIME),
+	},
+};
+
+static void ltrf216a_reset(struct iio_dev *indio_dev)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+
+	/* reset sensor, chip fails to respond to this, so ignore any errors */
+	regmap_write(data->regmap, LTRF216A_MAIN_CTRL, LTRF216A_ALS_RESET_MASK);
+
+	/* reset time */
+	usleep_range(1000, 2000);
+}
+
+static int ltrf216a_enable(struct iio_dev *indio_dev)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	struct device *dev = &data->client->dev;
+	int ret;
+
+	/* enable sensor */
+	ret = regmap_set_bits(data->regmap,
+			      LTRF216A_MAIN_CTRL, LTRF216A_ALS_ENABLE_MASK);
+	if (ret) {
+		dev_err(dev, "failed to enable sensor: %d\n", ret);
+		return ret;
+	}
+
+	/* sleep for one integration cycle after enabling the device */
+	msleep(ltrf216a_int_time_reg[0][0]);
+
+	return 0;
+}
+
+static int ltrf216a_disable(struct iio_dev *indio_dev)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	struct device *dev = &data->client->dev;
+	int ret;
+
+	ret = regmap_write(data->regmap, LTRF216A_MAIN_CTRL, 0);
+	if (ret)
+		dev_err(dev, "failed to disable sensor: %d\n", ret);
+
+	return ret;
+}
+
+static void ltrf216a_cleanup(void *data)
+{
+	struct iio_dev *indio_dev = data;
+
+	ltrf216a_disable(indio_dev);
+}
+
+static int ltrf216a_set_int_time(struct ltrf216a_data *data, int itime)
+{
+	struct device *dev = &data->client->dev;
+	unsigned int i;
+	u8 reg_val;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(ltrf216a_int_time_available); i++) {
+		if (ltrf216a_int_time_available[i][1] == itime)
+			break;
+	}
+	if (i == ARRAY_SIZE(ltrf216a_int_time_available))
+		return -EINVAL;
+
+	reg_val = ltrf216a_int_time_reg[i][1];
+
+	ret = regmap_write(data->regmap, LTRF216A_ALS_MEAS_RES, reg_val);
+	if (ret) {
+		dev_err(dev, "failed to set integration time: %d\n", ret);
+		return ret;
+	}
+
+	data->int_time_fac = ltrf216a_int_time_reg[i][0];
+	data->int_time = itime;
+
+	return 0;
+}
+
+static int ltrf216a_get_int_time(struct ltrf216a_data *data,
+				 int *val, int *val2)
+{
+	*val = 0;
+	*val2 = data->int_time;
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int ltrf216a_set_power_state(struct ltrf216a_data *data, bool on)
+{
+	struct device *dev = &data->client->dev;
+	int ret = 0;
+
+	if (on) {
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret) {
+			dev_err(dev, "failed to resume runtime PM: %d\n", ret);
+			return ret;
+		}
+	} else {
+		pm_runtime_mark_last_busy(dev);
+		pm_runtime_put_autosuspend(dev);
+	}
+
+	return ret;
+}
+
+static int ltrf216a_read_data(struct ltrf216a_data *data, u8 addr)
+{
+	struct device *dev = &data->client->dev;
+	int ret, val;
+	u8 buf[3];
+
+	ret = regmap_read_poll_timeout(data->regmap, LTRF216A_MAIN_STATUS,
+				       val, val & LTRF216A_ALS_DATA_STATUS,
+				       LTRF216A_ALS_READ_DATA_DELAY_US,
+				       LTRF216A_ALS_READ_DATA_DELAY_US * 50);
+	if (ret) {
+		dev_err(dev, "failed to wait for measurement data: %d\n", ret);
+		return ret;
+	}
+
+	ret = regmap_bulk_read(data->regmap, addr, buf, sizeof(buf));
+	if (ret) {
+		dev_err(dev, "failed to read measurement data: %d\n", ret);
+		return ret;
+	}
+
+	return get_unaligned_le24(&buf[0]);
+}
+
+static int ltrf216a_get_lux(struct ltrf216a_data *data)
+{
+	int ret, greendata;
+	u64 lux, div;
+
+	ret = ltrf216a_set_power_state(data, true);
+	if (ret)
+		return ret;
+
+	greendata = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0);
+	if (greendata < 0)
+		return greendata;
+
+	ltrf216a_set_power_state(data, false);
+
+	lux = greendata * 45 * LTRF216A_WIN_FAC * 100;
+	div = data->als_gain_fac * data->int_time_fac * 100;
+
+	return div_u64(lux, div);
+}
+
+static int ltrf216a_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, int *val,
+			     int *val2, long mask)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ltrf216a_set_power_state(data, true);
+		if (ret)
+			return ret;
+		mutex_lock(&data->lock);
+		ret = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0);
+		mutex_unlock(&data->lock);
+		ltrf216a_set_power_state(data, false);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_PROCESSED:
+		mutex_lock(&data->lock);
+		ret = ltrf216a_get_lux(data);
+		mutex_unlock(&data->lock);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_INT_TIME:
+		mutex_lock(&data->lock);
+		ret = ltrf216a_get_int_time(data, val, val2);
+		mutex_unlock(&data->lock);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ltrf216a_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan, int val,
+			      int val2, long mask)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		if (val != 0)
+			return -EINVAL;
+		mutex_lock(&data->lock);
+		ret = ltrf216a_set_int_time(data, val2);
+		mutex_unlock(&data->lock);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ltrf216a_read_available(struct iio_dev *indio_dev,
+				   struct iio_chan_spec const *chan,
+				   const int **vals, int *type, int *length,
+				   long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		*length = ARRAY_SIZE(ltrf216a_int_time_available) * 2;
+		*vals = (const int *)ltrf216a_int_time_available;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ltrf216a_info = {
+	.read_raw = ltrf216a_read_raw,
+	.write_raw = ltrf216a_write_raw,
+	.read_avail = ltrf216a_read_available,
+};
+
+static bool ltrf216a_readable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case LTRF216A_MAIN_CTRL:
+	case LTRF216A_ALS_MEAS_RES:
+	case LTRF216A_ALS_GAIN:
+	case LTRF216A_PART_ID:
+	case LTRF216A_MAIN_STATUS:
+	case LTRF216A_ALS_CLEAR_DATA_0:
+	case LTRF216A_ALS_CLEAR_DATA_1:
+	case LTRF216A_ALS_CLEAR_DATA_2:
+	case LTRF216A_ALS_DATA_0:
+	case LTRF216A_ALS_DATA_1:
+	case LTRF216A_ALS_DATA_2:
+	case LTRF216A_INT_CFG:
+	case LTRF216A_INT_PST:
+	case LTRF216A_ALS_THRES_UP_0:
+	case LTRF216A_ALS_THRES_UP_1:
+	case LTRF216A_ALS_THRES_UP_2:
+	case LTRF216A_ALS_THRES_LOW_0:
+	case LTRF216A_ALS_THRES_LOW_1:
+	case LTRF216A_ALS_THRES_LOW_2:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ltrf216a_writable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case LTRF216A_MAIN_CTRL:
+	case LTRF216A_ALS_MEAS_RES:
+	case LTRF216A_ALS_GAIN:
+	case LTRF216A_INT_CFG:
+	case LTRF216A_INT_PST:
+	case LTRF216A_ALS_THRES_UP_0:
+	case LTRF216A_ALS_THRES_UP_1:
+	case LTRF216A_ALS_THRES_UP_2:
+	case LTRF216A_ALS_THRES_LOW_0:
+	case LTRF216A_ALS_THRES_LOW_1:
+	case LTRF216A_ALS_THRES_LOW_2:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ltrf216a_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case LTRF216A_MAIN_STATUS:
+	case LTRF216A_ALS_CLEAR_DATA_0:
+	case LTRF216A_ALS_CLEAR_DATA_1:
+	case LTRF216A_ALS_CLEAR_DATA_2:
+	case LTRF216A_ALS_DATA_0:
+	case LTRF216A_ALS_DATA_1:
+	case LTRF216A_ALS_DATA_2:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ltrf216a_precious_reg(struct device *dev, unsigned int reg)
+{
+	return reg == LTRF216A_MAIN_STATUS;
+}
+
+static const struct regmap_config ltrf216a_regmap_config = {
+	.name = "ltrf216a",
+	.reg_bits = 8,
+	.val_bits = 8,
+	.cache_type = REGCACHE_RBTREE,
+	.max_register = LTRF216A_ALS_THRES_LOW_2,
+	.readable_reg = ltrf216a_readable_reg,
+	.writeable_reg = ltrf216a_writable_reg,
+	.volatile_reg = ltrf216a_volatile_reg,
+	.precious_reg = ltrf216a_precious_reg,
+	.disable_locking = true,
+};
+
+static int ltrf216a_probe(struct i2c_client *client)
+{
+	struct ltrf216a_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+
+	data->regmap = devm_regmap_init_i2c(client, &ltrf216a_regmap_config);
+	if (IS_ERR(data->regmap))
+		return dev_err_probe(&client->dev, PTR_ERR(data->regmap),
+				     "regmap initialization failed\n");
+
+	i2c_set_clientdata(client, indio_dev);
+	data->client = client;
+
+	mutex_init(&data->lock);
+
+	indio_dev->info = &ltrf216a_info;
+	indio_dev->name = "ltrf216a";
+	indio_dev->channels = ltrf216a_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ltrf216a_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = pm_runtime_set_active(&client->dev);
+	if (ret)
+		return ret;
+
+	/* reset sensor, chip fails to respond to this, so ignore any errors */
+	ltrf216a_reset(indio_dev);
+
+	ret = regmap_reinit_cache(data->regmap, &ltrf216a_regmap_config);
+	if (ret)
+		return dev_err_probe(&client->dev, ret,
+				     "failed to reinit regmap cache\n");
+
+	ret = ltrf216a_enable(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev, ltrf216a_cleanup,
+				       indio_dev);
+	if (ret)
+		return ret;
+
+	ret = devm_pm_runtime_enable(&client->dev);
+	if (ret)
+		return dev_err_probe(&client->dev, ret,
+				     "failed to enable runtime PM\n");
+
+	pm_runtime_set_autosuspend_delay(&client->dev, 1000);
+	pm_runtime_use_autosuspend(&client->dev);
+
+	data->int_time = 100000;
+	data->int_time_fac = 100;
+	data->als_gain_fac = 3;
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static int ltrf216a_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	ret = ltrf216a_disable(indio_dev);
+	if (ret)
+		return ret;
+
+	regcache_cache_only(data->regmap, true);
+
+	return 0;
+}
+
+static int ltrf216a_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	regcache_cache_only(data->regmap, false);
+	regcache_mark_dirty(data->regmap);
+	ret = regcache_sync(data->regmap);
+	if (ret)
+		goto cache_only;
+
+	ret = ltrf216a_enable(indio_dev);
+	if (ret)
+		goto cache_only;
+
+	return 0;
+
+cache_only:
+	regcache_cache_only(data->regmap, true);
+
+	return ret;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(ltrf216a_pm_ops, ltrf216a_runtime_suspend,
+				 ltrf216a_runtime_resume, NULL);
+
+static const struct i2c_device_id ltrf216a_id[] = {
+	{ "ltrf216a" },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, ltrf216a_id);
+
+static const struct of_device_id ltrf216a_of_match[] = {
+	{ .compatible = "liteon,ltrf216a" },
+	{ .compatible = "ltr,ltrf216a" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ltrf216a_of_match);
+
+static struct i2c_driver ltrf216a_driver = {
+	.driver = {
+		.name = "ltrf216a",
+		.pm = pm_ptr(&ltrf216a_pm_ops),
+		.of_match_table = ltrf216a_of_match,
+	},
+	.probe_new = ltrf216a_probe,
+	.id_table = ltrf216a_id,
+};
+module_i2c_driver(ltrf216a_driver);
+
+MODULE_AUTHOR("Shreeya Patel <[e-mail]>");
+MODULE_AUTHOR("Shi Zhigang <[e-mail]>");
+MODULE_DESCRIPTION("LTRF216A ambient light sensor driver");
+MODULE_LICENSE("GPL");

drivers/iio/magnetometer/Kconfig

···
 	select IIO_TRIGGERED_BUFFER
 	help
 	  Say Y here to add support for the Yamaha YAS530 series of
-	  3-Axis Magnetometers. Right now YAS530, YAS532 and YAS533 are
-	  fully supported.
+	  3-Axis Magnetometers. YAS530, YAS532, YAS533 and YAS537 are
+	  supported.
 
 	  This driver can also be compiled as a module.
 	  To compile this driver as a module, choose M here: the module

drivers/iio/magnetometer/hmc5843.h

···
 			 enum hmc5843_ids id, const char *name);
 void hmc5843_common_remove(struct device *dev);
 
-int hmc5843_common_suspend(struct device *dev);
-int hmc5843_common_resume(struct device *dev);
-
-#ifdef CONFIG_PM_SLEEP
-static __maybe_unused SIMPLE_DEV_PM_OPS(hmc5843_pm_ops,
-					hmc5843_common_suspend,
-					hmc5843_common_resume);
-#define HMC5843_PM_OPS (&hmc5843_pm_ops)
-#else
-#define HMC5843_PM_OPS NULL
-#endif
-
+extern const struct dev_pm_ops hmc5843_pm_ops;
 #endif /* HMC5843_CORE_H */

drivers/iio/magnetometer/hmc5843_core.c

···
 
 static const unsigned long hmc5843_scan_masks[] = {0x7, 0};
 
-int hmc5843_common_suspend(struct device *dev)
+static int hmc5843_common_suspend(struct device *dev)
 {
 	return hmc5843_set_mode(iio_priv(dev_get_drvdata(dev)),
 				HMC5843_MODE_SLEEP);
 }
-EXPORT_SYMBOL_NS(hmc5843_common_suspend, IIO_HMC5843);
 
-int hmc5843_common_resume(struct device *dev)
+static int hmc5843_common_resume(struct device *dev)
 {
 	return hmc5843_set_mode(iio_priv(dev_get_drvdata(dev)),
 		HMC5843_MODE_CONVERSION_CONTINUOUS);
 }
-EXPORT_SYMBOL_NS(hmc5843_common_resume, IIO_HMC5843);
+EXPORT_NS_SIMPLE_DEV_PM_OPS(hmc5843_pm_ops, hmc5843_common_suspend,
+			    hmc5843_common_resume, IIO_HMC5843);
 
 int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
 			 enum hmc5843_ids id, const char *name)

drivers/iio/magnetometer/hmc5843_i2c.c

···
 static struct i2c_driver hmc5843_driver = {
 	.driver = {
 		.name	= "hmc5843",
-		.pm	= HMC5843_PM_OPS,
+		.pm	= pm_sleep_ptr(&hmc5843_pm_ops),
 		.of_match_table = hmc5843_of_match,
 	},
 	.id_table	= hmc5843_id,

drivers/iio/magnetometer/hmc5843_spi.c

···
 MODULE_DEVICE_TABLE(spi, hmc5843_id);
 
 static struct spi_driver hmc5843_driver = {
-		.driver = {
-				.name = "hmc5843",
-				.pm = HMC5843_PM_OPS,
-		},
-		.id_table = hmc5843_id,
-		.probe = hmc5843_spi_probe,
-		.remove = hmc5843_spi_remove,
+	.driver = {
+		.name = "hmc5843",
+		.pm = pm_sleep_ptr(&hmc5843_pm_ops),
+	},
+	.id_table = hmc5843_id,
+	.probe = hmc5843_spi_probe,
+	.remove = hmc5843_spi_remove,
 };
 
 module_spi_driver(hmc5843_driver);

drivers/iio/magnetometer/yamaha-yas530.c

···
  * (YAS534 is a magnetic switch, not handled)
  * YAS535 MS-6C
  * YAS536 MS-3W
- * YAS537 MS-3T (2015 Samsung Galaxy S6, Note 5, Xiaomi)
+ * YAS537 MS-3T (2015 Samsung Galaxy S6, Note 5, Galaxy S7)
  * YAS539 MS-3S (2018 Samsung Galaxy A7 SM-A750FN)
  *
  * Code functions found in the MPU3050 YAS530 and YAS532 drivers
  * named "inv_compass" in the Tegra Android kernel tree.
  * Copyright (C) 2012 InvenSense Corporation
+ *
+ * Code functions for YAS537 based on Yamaha Android kernel driver.
+ * Copyright (c) 2014 Yamaha Corporation
  *
  * Author: Linus Walleij <[e-mail]>
  */
···
 #include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/random.h>
+#include <linux/units.h>
 
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
···
 
 #include <asm/unaligned.h>
 
-/* This register map covers YAS530 and YAS532 but differs in YAS 537 and YAS539 */
+/* Commonly used registers */
 #define YAS5XX_DEVICE_ID		0x80
-#define YAS5XX_ACTUATE_INIT_COIL	0x81
-#define YAS5XX_MEASURE			0x82
-#define YAS5XX_CONFIG			0x83
-#define YAS5XX_MEASURE_INTERVAL		0x84
-#define YAS5XX_OFFSET_X			0x85 /* [-31 .. 31] */
-#define YAS5XX_OFFSET_Y1		0x86 /* [-31 .. 31] */
-#define YAS5XX_OFFSET_Y2		0x87 /* [-31 .. 31] */
-#define YAS5XX_TEST1			0x88
-#define YAS5XX_TEST2			0x89
-#define YAS5XX_CAL			0x90
 #define YAS5XX_MEASURE_DATA		0xB0
+
+/* These registers are used by YAS530, YAS532 and YAS533 */
+#define YAS530_ACTUATE_INIT_COIL	0x81
+#define YAS530_MEASURE			0x82
+#define YAS530_CONFIG			0x83
+#define YAS530_MEASURE_INTERVAL		0x84
+#define YAS530_OFFSET_X			0x85 /* [-31 .. 31] */
+#define YAS530_OFFSET_Y1		0x86 /* [-31 .. 31] */
+#define YAS530_OFFSET_Y2		0x87 /* [-31 .. 31] */
+#define YAS530_TEST1			0x88
+#define YAS530_TEST2			0x89
+#define YAS530_CAL			0x90
+
+/* Registers used by YAS537 */
+#define YAS537_MEASURE			0x81 /* Originally YAS537_REG_CMDR */
+#define YAS537_CONFIG			0x82 /* Originally YAS537_REG_CONFR */
+#define YAS537_MEASURE_INTERVAL		0x83 /* Originally YAS537_REG_INTRVLR */
+#define YAS537_OFFSET_X			0x84 /* Originally YAS537_REG_OXR */
+#define YAS537_OFFSET_Y1		0x85 /* Originally YAS537_REG_OY1R */
+#define YAS537_OFFSET_Y2		0x86 /* Originally YAS537_REG_OY2R */
+#define YAS537_AVR			0x87
+#define YAS537_HCK			0x88
+#define YAS537_LCK			0x89
+#define YAS537_SRST			0x90
+#define YAS537_ADCCAL			0x91
+#define YAS537_MTC			0x93
+#define YAS537_OC			0x9E
+#define YAS537_TRM			0x9F
+#define YAS537_CAL			0xC0
 
 /* Bits in the YAS5xx config register */
 #define YAS5XX_CONFIG_INTON		BIT(0) /* Interrupt on? */
···
 #define YAS5XX_MEASURE_LDTC		BIT(1)
 #define YAS5XX_MEASURE_FORS		BIT(2)
 #define YAS5XX_MEASURE_DLYMES		BIT(4)
+#define YAS5XX_MEASURE_CONT		BIT(5)
 
 /* Bits in the measure data register */
 #define YAS5XX_MEASURE_DATA_BUSY	BIT(7)
···
 #define YAS532_DATA_BITS		13
 #define YAS532_DATA_CENTER		BIT(YAS532_DATA_BITS - 1)
 #define YAS532_DATA_OVERFLOW		(BIT(YAS532_DATA_BITS) - 1)
-#define YAS532_20DEGREES		390 /* Looks like Kelvin */
 
-/* These variant IDs are known from code dumps */
 #define YAS537_DEVICE_ID		0x07 /* YAS537 (MS-3T) */
-#define YAS539_DEVICE_ID		0x08 /* YAS539 (MS-3S) */
+#define YAS537_VERSION_0		0 /* Version naming unknown */
+#define YAS537_VERSION_1		1 /* Version naming unknown */
+#define YAS537_MAG_AVERAGE_32_MASK	GENMASK(6, 4)
+#define YAS537_MEASURE_TIME_WORST_US	1500
+#define YAS537_DEFAULT_SENSOR_DELAY_MS	50
+#define YAS537_MAG_RCOIL_TIME_US	65
+#define YAS537_MTC3_MASK_PREP		GENMASK(7, 0)
+#define YAS537_MTC3_MASK_GET		GENMASK(7, 5)
+#define YAS537_MTC3_ADD_BIT		BIT(4)
+#define YAS537_HCK_MASK_PREP		GENMASK(4, 0)
+#define YAS537_HCK_MASK_GET		GENMASK(7, 4)
+#define YAS537_LCK_MASK_PREP		GENMASK(4, 0)
+#define YAS537_LCK_MASK_GET		GENMASK(3, 0)
+#define YAS537_OC_MASK_GET		GENMASK(5, 0)
 
 /* Turn off device regulators etc after 5 seconds of inactivity */
 #define YAS5XX_AUTOSUSPEND_DELAY_MS	5000
+
+enum chip_ids {
+	yas530,
+	yas532,
+	yas533,
+	yas537,
+};
+
+static const int yas530_volatile_reg[] = {
+	YAS530_ACTUATE_INIT_COIL,
+	YAS530_MEASURE,
+};
+
+static const int yas537_volatile_reg[] = {
+	YAS537_MEASURE,
+};
 
 struct yas5xx_calibration {
 	/* Linearization calibration x, y1, y2 */
 	s32 r[3];
 	u32 f[3];
 	/* Temperature compensation calibration */
-	s32 Cx, Cy1, Cy2;
+	s16 Cx, Cy1, Cy2;
 	/* Misc calibration coefficients */
-	s32 a2, a3, a4, a5, a6, a7, a8, a9, k;
+	s8  a2, a3, a4, a6, a7, a8;
+	s16 a5, a9;
+	u8  k;
 	/* clock divider */
 	u8 dck;
+};
+
+struct yas5xx;
+
+/**
+ * struct yas5xx_chip_info - device-specific data and function pointers
+ * @devid: device ID number
+ * @product_name: product name of the YAS variant
+ * @version_names: version letters or namings
+ * @volatile_reg: device-specific volatile registers
+ * @volatile_reg_qty: quantity of device-specific volatile registers
+ * @scaling_val2: scaling value for IIO_CHAN_INFO_SCALE
+ * @t_ref: number of counts at reference temperature 20 °C
+ * @min_temp_x10: starting point of temperature counting in 1/10:s degrees Celsius
+ * @get_measure: function pointer to get a measurement
+ * @get_calibration_data: function pointer to get calibration data
+ * @dump_calibration: function pointer to dump calibration for debugging
+ * @measure_offsets: function pointer to measure the offsets
+ * @power_on: function pointer to power-on procedure
+ *
+ * The "t_ref" value for YAS532/533 is known from the Android driver.
+ * For YAS530 and YAS537 it was approximately measured.
+ *
+ * The temperatures "min_temp_x10" are derived from the temperature resolutions
+ * given in the data sheets.
+ */
+struct yas5xx_chip_info {
+	unsigned int devid;
+	const char *product_name;
+	const char *version_names[2];
+	const int *volatile_reg;
+	int volatile_reg_qty;
+	u32 scaling_val2;
+	u16 t_ref;
+	s16 min_temp_x10;
+	int (*get_measure)(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo);
+	int (*get_calibration_data)(struct yas5xx *yas5xx);
+	void (*dump_calibration)(struct yas5xx *yas5xx);
+	int (*measure_offsets)(struct yas5xx *yas5xx);
+	int (*power_on)(struct yas5xx *yas5xx);
 };
 
 /**
  * struct yas5xx - state container for the YAS5xx driver
  * @dev: parent device pointer
- * @devid: device ID number
+ * @chip_info: device-specific data and function pointers
  * @version: device version
- * @name: device name
  * @calibration: calibration settings from the OTP storage
  * @hard_offsets: offsets for each axis measured with initcoil actuated
  * @orientation: mounting matrix, flipped axis etc
···
  */
 struct yas5xx {
 	struct device *dev;
-	unsigned int devid;
+	const struct yas5xx_chip_info *chip_info;
 	unsigned int version;
-	char name[16];
 	struct yas5xx_calibration calibration;
-	u8 hard_offsets[3];
+	s8 hard_offsets[3];
 	struct iio_mount_matrix orientation;
 	struct regmap *map;
 	struct regulator_bulk_data regs[2];
···
 }
 
 /**
- * yas5xx_measure() - Make a measure from the hardware
+ * yas530_measure() - Make a measure from the hardware
  * @yas5xx: The device state
  * @t: the raw temperature measurement
  * @x: the raw x axis measurement
  * @y1: the y1 axis measurement
  * @y2: the y2 axis measurement
  * @return: 0 on success or error code
+ *
+ * Used by YAS530, YAS532 and YAS533.
  */
-static int yas5xx_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2)
+static int yas530_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2)
 {
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
 	unsigned int busy;
 	u8 data[8];
 	int ret;
 	u16 val;
 
 	mutex_lock(&yas5xx->lock);
-	ret = regmap_write(yas5xx->map, YAS5XX_MEASURE, YAS5XX_MEASURE_START);
+	ret = regmap_write(yas5xx->map, YAS530_MEASURE, YAS5XX_MEASURE_START);
 	if (ret < 0)
 		goto out_unlock;
 
···
 
 	mutex_unlock(&yas5xx->lock);
 
-	switch (yas5xx->devid) {
+	switch (ci->devid) {
 	case YAS530_DEVICE_ID:
 		/*
 		 * The t value is 9 bits in big endian format
···
 	return ret;
 }
 
-static s32 yas5xx_linearize(struct yas5xx *yas5xx, u16 val, int axis)
+/**
+ * yas537_measure() - Make a measure from the hardware
+ * @yas5xx: The device state
+ * @t: the raw temperature measurement
+ * @x: the raw x axis measurement
+ * @y1: the y1 axis measurement
+ * @y2: the y2 axis measurement
+ * @return: 0 on success or error code
+ */
+static int yas537_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2)
 {
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	unsigned int busy;
+	u8 data[8];
+	u16 xy1y2[3];
+	s32 h[3], s[3];
+	int i, ret;
+
+	mutex_lock(&yas5xx->lock);
+
+	/* Contrary to YAS530/532, also a "cont" bit is set, meaning unknown */
+	ret = regmap_write(yas5xx->map, YAS537_MEASURE, YAS5XX_MEASURE_START |
+			   YAS5XX_MEASURE_CONT);
+	if (ret < 0)
+		goto out_unlock;
+
+	/* Use same timeout like YAS530/532 but the bit is in data row 2 */
+	ret = regmap_read_poll_timeout(yas5xx->map, YAS5XX_MEASURE_DATA + 2, busy,
+				       !(busy & YAS5XX_MEASURE_DATA_BUSY),
+				       500, 20000);
+	if (ret) {
+		dev_err(yas5xx->dev, "timeout waiting for measurement\n");
+		goto out_unlock;
+	}
+
+	ret = regmap_bulk_read(yas5xx->map, YAS5XX_MEASURE_DATA,
+			       data, sizeof(data));
+	if (ret)
+		goto out_unlock;
+
+	mutex_unlock(&yas5xx->lock);
+
+	*t = get_unaligned_be16(&data[0]);
+	xy1y2[0] = FIELD_GET(GENMASK(13, 0), get_unaligned_be16(&data[2]));
+	xy1y2[1] = get_unaligned_be16(&data[4]);
+	xy1y2[2] = get_unaligned_be16(&data[6]);
+
+	/* The second version of YAS537 needs to include calibration coefficients */
+	if (yas5xx->version == YAS537_VERSION_1) {
+		for (i = 0; i < 3; i++)
+			s[i] = xy1y2[i] - BIT(13);
+		h[0] = (c->k *   (128 * s[0] + c->a2 * s[1] + c->a3 * s[2])) / BIT(13);
+		h[1] = (c->k * (c->a4 * s[0] + c->a5 * s[1] + c->a6 * s[2])) / BIT(13);
+		h[2] = (c->k * (c->a7 * s[0] + c->a8 * s[1] + c->a9 * s[2])) / BIT(13);
+		for (i = 0; i < 3; i++) {
+			clamp_val(h[i], -BIT(13), BIT(13) - 1);
+			xy1y2[i] = h[i] + BIT(13);
+		}
+	}
+
+	*x = xy1y2[0];
+	*y1 = xy1y2[1];
+	*y2 = xy1y2[2];
+
+	return 0;
+
+out_unlock:
+	mutex_unlock(&yas5xx->lock);
+	return ret;
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis)
+{
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
 	struct yas5xx_calibration *c = &yas5xx->calibration;
 	static const s32 yas532ac_coef[] = {
 		YAS532_VERSION_AC_COEF_X,
···
 	s32 coef;
 
 	/* Select coefficients */
-	switch (yas5xx->devid) {
+	switch (ci->devid) {
 	case YAS530_DEVICE_ID:
 		if (yas5xx->version == YAS530_VERSION_A)
 			coef = YAS530_VERSION_A_COEF;
···
 		(yas5xx->hard_offsets[axis] - c->r[axis]) * coef;
 }
 
+static s32 yas5xx_calc_temperature(struct yas5xx *yas5xx, u16 t)
+{
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	s32 to;
+	u16 t_ref;
+	s16 min_temp_x10;
+	int ref_temp_x10;
+
+	t_ref = ci->t_ref;
+	min_temp_x10 = ci->min_temp_x10;
+	ref_temp_x10 = 200;
+
+	to = (min_temp_x10 + ((ref_temp_x10 - min_temp_x10) * t / t_ref)) * 100;
+	return to;
+}
+
 /**
- * yas5xx_get_measure() - Measure a sample of all axis and process
+ * yas530_get_measure() - Measure a sample of all axis and process
  * @yas5xx: The device state
  * @to: Temperature out
  * @xo: X axis out
···
  * @zo: Z axis out
  * @return: 0 on success or error code
  *
- * Returned values are in nanotesla according to some code.
+ * Used by YAS530, YAS532 and YAS533.
  */
-static int yas5xx_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo)
+static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo)
 {
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
 	struct yas5xx_calibration *c = &yas5xx->calibration;
-	u16 t, x, y1, y2;
-	/* These are "signed x, signed y1 etc */
+	u16 t_ref, t_comp, t, x, y1, y2;
+	/* These are signed x, signed y1 etc */
 	s32 sx, sy1, sy2, sy, sz;
 	int ret;
 
 	/* We first get raw data that needs to be translated to [x,y,z] */
-	ret = yas5xx_measure(yas5xx, &t, &x, &y1, &y2);
+	ret = yas530_measure(yas5xx, &t, &x, &y1, &y2);
 	if (ret)
 		return ret;
 
 	/* Do some linearization if available */
-	sx = yas5xx_linearize(yas5xx, x, 0);
-	sy1 = yas5xx_linearize(yas5xx, y1, 1);
-	sy2 = yas5xx_linearize(yas5xx, y2, 2);
+	sx = yas530_linearize(yas5xx, x, 0);
+	sy1 = yas530_linearize(yas5xx, y1, 1);
+	sy2 = yas530_linearize(yas5xx, y2, 2);
+
+	/*
+	 * Set the temperature for compensation (unit: counts):
+	 * YAS532/YAS533 version AC uses the temperature deviation as a
+	 * multiplier. YAS530 and YAS532 version AB use solely the t value.
+	 */
+	t_ref = ci->t_ref;
+	if (ci->devid == YAS532_DEVICE_ID &&
+	    yas5xx->version == YAS532_VERSION_AC) {
+		t_comp = t - t_ref;
+	} else {
+		t_comp = t;
+	}
 
 	/*
 	 * Temperature compensation for x, y1, y2 respectively:
 	 *
-	 *          Cx * t
-	 * x' = x - ------
-	 *           100
+	 *          Cx * t_comp
+	 * x' = x - -----------
+	 *              100
 	 */
-	sx = sx - (c->Cx * t) / 100;
-	sy1 = sy1 - (c->Cy1 * t) / 100;
-	sy2 = sy2 - (c->Cy2 * t) / 100;
+	sx = sx - (c->Cx * t_comp) / 100;
+	sy1 = sy1 - (c->Cy1 * t_comp) / 100;
+	sy2 = sy2 - (c->Cy2 * t_comp) / 100;
 
 	/*
 	 * Break y1 and y2 into y and z, y1 and y2 are apparently encoding
···
 	sy = sy1 - sy2;
 	sz = -sy1 - sy2;
 
-	/*
-	 * FIXME: convert to Celsius? Just guessing this is given
-	 * as 1/10:s of degrees so multiply by 100 to get millicentigrades.
-	 */
-	*to = t * 100;
+	/* Calculate temperature readout */
+	*to = yas5xx_calc_temperature(yas5xx, t);
+
 	/*
 	 * Calibrate [x,y,z] with some formulas like this:
 	 *
···
 	return 0;
 }
 
+/**
+ * yas537_get_measure() - Measure a sample of all axis and process
+ * @yas5xx: The device state
+ * @to: Temperature out
+ * @xo: X axis out
+ * @yo: Y axis out
+ * @zo: Z axis out
+ * @return: 0 on success or error code
+ */
+static int yas537_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo)
+{
+	u16 t, x, y1, y2;
+	int ret;
+
+	/* We first get raw data that needs to be translated to [x,y,z] */
+	ret = yas537_measure(yas5xx, &t, &x, &y1, &y2);
+	if (ret)
+		return ret;
+
+	/* Calculate temperature readout */
+	*to = yas5xx_calc_temperature(yas5xx, t);
+
+	/*
+	 * Unfortunately, no linearization or temperature compensation formulas
+	 * are known for YAS537.
+	 */
+
+	/* Calculate x, y, z from x, y1, y2 */
+	*xo = (x - BIT(13)) * 300;
+	*yo = (y1 - y2) * 1732 / 10;
+	*zo = (-y1 - y2 + BIT(14)) * 300;
+
+	return 0;
+}
+
 static int yas5xx_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan,
 			   int *val, int *val2,
 			   long mask)
 {
 	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
 	s32 t, x, y, z;
 	int ret;
 
 	switch (mask) {
+	case IIO_CHAN_INFO_PROCESSED:
 	case IIO_CHAN_INFO_RAW:
 		pm_runtime_get_sync(yas5xx->dev);
-		ret = yas5xx_get_measure(yas5xx, &t, &x, &y, &z);
+		ret = ci->get_measure(yas5xx, &t, &x, &y, &z);
 		pm_runtime_mark_last_busy(yas5xx->dev);
 		pm_runtime_put_autosuspend(yas5xx->dev);
 		if (ret)
···
 		}
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		if (chan->address == 0) {
-			/* Temperature is unscaled */
-			*val = 1;
-			return IIO_VAL_INT;
-		}
-		/*
-		 * The axis values are in nanotesla according to the vendor
-		 * drivers, but is clearly in microtesla according to
-		 * experiments. Since 1 uT = 0.01 Gauss, we need to divide
-		 * by 100000000 (10^8) to get to Gauss from the raw value.
-		 */
 		*val = 1;
-		*val2 = 100000000;
+		*val2 = ci->scaling_val2;
 		return IIO_VAL_FRACTIONAL;
 	default:
 		/* Unknown request */
···
 static void yas5xx_fill_buffer(struct iio_dev *indio_dev)
 {
 	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
 	s32 t, x, y, z;
 	int ret;
 
 	pm_runtime_get_sync(yas5xx->dev);
-	ret = yas5xx_get_measure(yas5xx, &t, &x, &y, &z);
+	ret = ci->get_measure(yas5xx, &t, &x, &y, &z);
 	pm_runtime_mark_last_busy(yas5xx->dev);
 	pm_runtime_put_autosuspend(yas5xx->dev);
 	if (ret) {
···
 		.address = 0,
 		.scan_index = 0,
 		.scan_type = {
-			.sign = 'u',
+			.sign = 's',
 			.realbits = 32,
 			.storagebits = 32,
 			.endianness = IIO_CPU,
···
 
 static bool yas5xx_volatile_reg(struct device *dev, unsigned int reg)
 {
-	return reg == YAS5XX_ACTUATE_INIT_COIL ||
-		reg == YAS5XX_MEASURE ||
-		(reg >= YAS5XX_MEASURE_DATA && reg <= YAS5XX_MEASURE_DATA + 8);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	int reg_qty;
+	int i;
+
+	if (reg >= YAS5XX_MEASURE_DATA && reg < YAS5XX_MEASURE_DATA + 8)
+		return true;
+
+	/*
+	 * YAS versions share different registers on the same address,
+	 * need to differentiate.
+	 */
+	reg_qty = ci->volatile_reg_qty;
+	for (i = 0; i < reg_qty; i++) {
+		if (reg == ci->volatile_reg[i])
+			return true;
+	}
+
+	return false;
 }
 
 /* TODO: enable regmap cache, using mark dirty and sync at runtime resume */
···
 };
 
 /**
- * yas53x_extract_calibration() - extracts the a2-a9 and k calibration
+ * yas530_extract_calibration() - extracts the a2-a9 and k calibration
  * @data: the bitfield to use
  * @c: the calibration to populate
+ *
+ * Used by YAS530, YAS532 and YAS533.
  */
-static void yas53x_extract_calibration(u8 *data, struct yas5xx_calibration *c)
+static void yas530_extract_calibration(u8 *data, struct yas5xx_calibration *c)
 {
 	u64 val = get_unaligned_be64(data);
 
···
 	int ret;
 
 	/* Dummy read, first read is ALWAYS wrong */
-	ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data));
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
 	if (ret)
 		return ret;
 
 	/* Actual calibration readout */
-	ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data));
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
 	if (ret)
 		return ret;
-	dev_dbg(yas5xx->dev, "calibration data: %*ph\n", 14, data);
+	dev_dbg(yas5xx->dev, "calibration data: %16ph\n", data);
 
+	/* Contribute calibration data to the input pool for kernel entropy */
 	add_device_randomness(data, sizeof(data));
+
+	/* Extract version */
 	yas5xx->version = data[15] & GENMASK(1, 0);
 
 	/* Extract the calibration from the bitfield */
 	c->Cx = data[0] * 6 - 768;
 	c->Cy1 = data[1] * 6 - 768;
 	c->Cy2 = data[2] * 6 - 768;
-	yas53x_extract_calibration(&data[3], c);
+	yas530_extract_calibration(&data[3], c);
 
 	/*
 	 * Extract linearization:
···
 	c->r[0] = sign_extend32(FIELD_GET(GENMASK(28, 23), val), 5);
 	c->r[1] = sign_extend32(FIELD_GET(GENMASK(20, 15), val), 5);
 	c->r[2] = sign_extend32(FIELD_GET(GENMASK(12, 7), val), 5);
+
 	return 0;
 }
 
···
 	int ret;
 
 	/* Dummy read, first read is ALWAYS wrong */
-	ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data));
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
 	if (ret)
 		return ret;
 	/* Actual calibration readout */
-	ret = regmap_bulk_read(yas5xx->map, YAS5XX_CAL, data, sizeof(data));
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
 	if (ret)
 		return ret;
-	dev_dbg(yas5xx->dev, "calibration data: %*ph\n", 14, data);
+	dev_dbg(yas5xx->dev, "calibration data: %14ph\n", data);
 
 	/* Sanity check, is this all zeroes? */
-	if (memchr_inv(data, 0x00, 13) == NULL) {
-		if (!(data[13] & BIT(7)))
-			dev_warn(yas5xx->dev, "calibration is blank!\n");
-	}
+	if (!memchr_inv(data, 0x00, 13) && !(data[13] & BIT(7)))
+		dev_warn(yas5xx->dev, "calibration is blank!\n");
 
+	/* Contribute calibration data to the input pool for kernel entropy */
 	add_device_randomness(data, sizeof(data));
+
 	/* Only one bit of version info reserved here as far as we know */
 	yas5xx->version = data[13] & BIT(0);
 
···
 	c->Cx = data[0] * 10 - 1280;
 	c->Cy1 = data[1] * 10 - 1280;
 	c->Cy2 = data[2] * 10 - 1280;
-	yas53x_extract_calibration(&data[3], c);
+	yas530_extract_calibration(&data[3], c);
+
 	/*
 	 * Extract linearization:
 	 * Linearization layout in the 32 bits at byte 10:
···
 	return 0;
 }
 
-static void yas5xx_dump_calibration(struct yas5xx *yas5xx)
+static int yas537_get_calibration_data(struct yas5xx *yas5xx)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	u8 data[17];
+	u32 val1, val2, val3, val4;
+	int i, ret;
+
+	/* Writing SRST register */
+	ret = regmap_write(yas5xx->map, YAS537_SRST, BIT(1));
+	if (ret)
+		return ret;
+
+	/* Calibration readout, YAS537 needs one readout only */
+	ret = regmap_bulk_read(yas5xx->map, YAS537_CAL, data, sizeof(data));
+	if (ret)
+		return ret;
+	dev_dbg(yas5xx->dev, "calibration data: %17ph\n", data);
+
+	/* Sanity check, is this all zeroes? */
+	if (!memchr_inv(data, 0x00, 16) && !FIELD_GET(GENMASK(5, 0), data[16]))
+		dev_warn(yas5xx->dev, "calibration is blank!\n");
+
+	/* Contribute calibration data to the input pool for kernel entropy */
+	add_device_randomness(data, sizeof(data));
+
+	/* Extract version information */
+	yas5xx->version = FIELD_GET(GENMASK(7, 6), data[16]);
+
+	/* There are two versions of YAS537 behaving differently */
+	switch (yas5xx->version) {
+	case YAS537_VERSION_0:
+		/*
+		 * The first version simply writes data back into registers:
+		 *
+		 * data[0]  YAS537_MTC		0x93
+		 * data[1]			0x94
+		 * data[2]			0x95
+		 * data[3]			0x96
+		 * data[4]			0x97
+		 * data[5]			0x98
+		 * data[6]			0x99
+		 * data[7]			0x9a
+		 * data[8]			0x9b
+		 * data[9]			0x9c
+		 * data[10]			0x9d
+		 * data[11] YAS537_OC		0x9e
+		 *
+		 * data[12] YAS537_OFFSET_X	0x84
+		 * data[13] YAS537_OFFSET_Y1	0x85
+		 * data[14] YAS537_OFFSET_Y2	0x86
+		 *
+		 * data[15] YAS537_HCK		0x88
+		 * data[16] YAS537_LCK		0x89
+		 */
+		for (i = 0; i < 12; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_MTC + i,
+					   data[i]);
+			if (ret)
+				return ret;
+		}
+		for (i = 0; i < 3; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_OFFSET_X + i,
+					   data[i + 12]);
+			if (ret)
+				return ret;
+			yas5xx->hard_offsets[i] = data[i + 12];
+		}
+		for (i = 0; i < 2; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_HCK + i,
+					   data[i + 15]);
+			if (ret)
+				return ret;
+		}
+		break;
+	case YAS537_VERSION_1:
+		/*
+		 * The second version writes some data into registers but also
+		 * extracts calibration coefficients.
+		 *
+		 * Registers being written:
+		 *
+		 * data[0]  YAS537_MTC			0x93
+		 * data[1]  YAS537_MTC+1		0x94
+		 * data[2]  YAS537_MTC+2		0x95
+		 * data[3]  YAS537_MTC+3 (partially)	0x96
+		 *
+		 * data[12] YAS537_OFFSET_X		0x84
+		 * data[13] YAS537_OFFSET_Y1		0x85
+		 * data[14] YAS537_OFFSET_Y2		0x86
+		 *
+		 * data[15] YAS537_HCK (partially)	0x88
+		 *          YAS537_LCK (partially)	0x89
+		 * data[16] YAS537_OC  (partially)	0x9e
+		 */
+		for (i = 0; i < 3; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_MTC + i,
+					   data[i]);
+			if (ret)
+				return ret;
+		}
+		for (i = 0; i < 3; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_OFFSET_X + i,
+					   data[i + 12]);
+			if (ret)
+				return ret;
+			yas5xx->hard_offsets[i] = data[i + 12];
+		}
+		/*
+		 * Visualization of partially taken data:
+		 *
+		 * data[3]       n 7 6 5 4 3 2 1 0
+		 * YAS537_MTC+3    x x x 1 0 0 0 0
+		 *
+		 * data[15]      n 7 6 5 4 3 2 1 0
+		 * YAS537_HCK      x x x x 0
+		 *
+		 * data[15]      n 7 6 5 4 3 2 1 0
+		 * YAS537_LCK              x x x x 0
+		 *
+		 * data[16]      n 7 6 5 4 3 2 1 0
+		 * YAS537_OC           x x x x x x
+		 */
+		ret = regmap_write(yas5xx->map, YAS537_MTC + 3,
+				   FIELD_PREP(YAS537_MTC3_MASK_PREP,
+				   FIELD_GET(YAS537_MTC3_MASK_GET, data[3])) |
+				   YAS537_MTC3_ADD_BIT);
+		if (ret)
+			return ret;
+		ret = regmap_write(yas5xx->map, YAS537_HCK,
+				   FIELD_PREP(YAS537_HCK_MASK_PREP,
+				   FIELD_GET(YAS537_HCK_MASK_GET, data[15])));
+		if (ret)
+			return ret;
+		ret = regmap_write(yas5xx->map, YAS537_LCK,
+				   FIELD_PREP(YAS537_LCK_MASK_PREP,
+				   FIELD_GET(YAS537_LCK_MASK_GET, data[15])));
+		if (ret)
+			return ret;
+		ret = regmap_write(yas5xx->map, YAS537_OC,
+				   FIELD_GET(YAS537_OC_MASK_GET, data[16]));
+		if (ret)
+			return ret;
+		/*
+		 * For data extraction, build some blocks. Four 32-bit blocks
+		 * look appropriate.
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[0]   0 [ Cx Cx Cx Cx Cx Cx Cx Cx ] bits 31 .. 24
+		 *  data[1]   1 [ Cx C1 C1 C1 C1 C1 C1 C1 ] bits 23 .. 16
+		 *  data[2]   2 [ C1 C1 C2 C2 C2 C2 C2 C2 ] bits 15 .. 8
+		 *  data[3]   3 [ C2 C2 C2                ] bits  7 .. 0
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[3]   0 [          a2 a2 a2 a2 a2 ] bits 31 .. 24
+		 *  data[4]   1 [ a2 a2 a3 a3 a3 a3 a3 a3 ] bits 23 .. 16
+		 *  data[5]   2 [ a3 a4 a4 a4 a4 a4 a4 a4 ] bits 15 .. 8
+		 *  data[6]   3 [ a4                      ] bits  7 .. 0
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[6]   0 [    a5 a5 a5 a5 a5 a5 a5 ] bits 31 .. 24
+		 *  data[7]   1 [ a5 a5 a6 a6 a6 a6 a6 a6 ] bits 23 .. 16
+		 *  data[8]   2 [ a6 a7 a7 a7 a7 a7 a7 a7 ] bits 15 .. 8
+		 *  data[9]   3 [ a7                      ] bits  7 .. 0
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[9]   0 [    a8 a8 a8 a8 a8 a8 a8 ] bits 31 .. 24
+		 *  data[10]  1 [ a9 a9 a9 a9 a9 a9 a9 a9 ] bits 23 .. 16
+		 *  data[11]  2 [ a9  k  k  k  k  k  k  k ] bits 15 .. 8
+		 *  data[12]  3 [                         ] bits  7 .. 0
+		 */
+		val1 = get_unaligned_be32(&data[0]);
+		val2 = get_unaligned_be32(&data[3]);
+		val3 = get_unaligned_be32(&data[6]);
+		val4 = get_unaligned_be32(&data[9]);
+		/* Extract calibration coefficients and modify */
+		c->Cx  = FIELD_GET(GENMASK(31, 23), val1) - 256;
+		c->Cy1 = FIELD_GET(GENMASK(22, 14), val1) - 256;
+		c->Cy2 = FIELD_GET(GENMASK(13,  5), val1) - 256;
+		c->a2  = FIELD_GET(GENMASK(28, 22), val2) -  64;
+		c->a3  = FIELD_GET(GENMASK(21, 15), val2) -  64;
+		c->a4  = FIELD_GET(GENMASK(14,  7), val2) - 128;
+		c->a5  = FIELD_GET(GENMASK(30, 22), val3) - 112;
+		c->a6  = FIELD_GET(GENMASK(21, 15), val3) -  64;
+		c->a7  = FIELD_GET(GENMASK(14,  7), val3) - 128;
+		c->a8  = FIELD_GET(GENMASK(30, 24), val4) -  64;
+		c->a9  = FIELD_GET(GENMASK(23, 15), val4) - 112;
+		c->k   = FIELD_GET(GENMASK(14,  8), val4);
+		break;
+	default:
+		dev_err(yas5xx->dev, "unknown version of YAS537\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static void yas530_dump_calibration(struct yas5xx *yas5xx)
 {
 	struct yas5xx_calibration *c = &yas5xx->calibration;
 
···
 	dev_dbg(yas5xx->dev, "dck = %d\n", c->dck);
 }
 
-static int yas5xx_set_offsets(struct yas5xx *yas5xx, s8 ox, s8 oy1, s8 oy2)
+static void yas537_dump_calibration(struct yas5xx *yas5xx)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+
+	if (yas5xx->version == YAS537_VERSION_1) {
+		dev_dbg(yas5xx->dev, "Cx = %d\n", c->Cx);
+		dev_dbg(yas5xx->dev, "Cy1 = %d\n", c->Cy1);
+		dev_dbg(yas5xx->dev, "Cy2 = %d\n", c->Cy2);
+		dev_dbg(yas5xx->dev, "a2 = %d\n", c->a2);
+		dev_dbg(yas5xx->dev, "a3 = %d\n", c->a3);
+		dev_dbg(yas5xx->dev, "a4 = %d\n", c->a4);
+		dev_dbg(yas5xx->dev, "a5 = %d\n", c->a5);
+		dev_dbg(yas5xx->dev, "a6 = %d\n", c->a6);
+		dev_dbg(yas5xx->dev, "a7 = %d\n", c->a7);
+		dev_dbg(yas5xx->dev, "a8 = %d\n", c->a8);
+		dev_dbg(yas5xx->dev, "a9 = %d\n", c->a9);
+		dev_dbg(yas5xx->dev, "k = %d\n", c->k);
+	}
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static int yas530_set_offsets(struct yas5xx *yas5xx, s8 ox, s8 oy1, s8 oy2)
 {
 	int ret;
 
-	ret = regmap_write(yas5xx->map, YAS5XX_OFFSET_X, ox);
+	ret = regmap_write(yas5xx->map, YAS530_OFFSET_X, ox);
 	if (ret)
 		return ret;
-	ret = regmap_write(yas5xx->map, YAS5XX_OFFSET_Y1, oy1);
+	ret = regmap_write(yas5xx->map, YAS530_OFFSET_Y1, oy1);
 	if (ret)
 		return ret;
-	return regmap_write(yas5xx->map, YAS5XX_OFFSET_Y2, oy2);
+	return regmap_write(yas5xx->map, YAS530_OFFSET_Y2, oy2);
 }
 
-static s8 yas5xx_adjust_offset(s8 old, int bit, u16 center, u16 measure)
+/* Used by YAS530, YAS532 and YAS533 */
+static s8 yas530_adjust_offset(s8 old, int bit, u16 center, u16 measure)
 {
 	if (measure > center)
 		return old + BIT(bit);
···
 	return old;
 }
 
-static int yas5xx_meaure_offsets(struct yas5xx *yas5xx)
+/* Used by YAS530, YAS532 and YAS533 */
+static int yas530_measure_offsets(struct yas5xx *yas5xx)
 {
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
 	int ret;
 	u16 center;
 	u16 t, x, y1, y2;
···
 	int i;
 
 	/* Actuate the init coil and measure offsets */
-	ret = regmap_write(yas5xx->map, YAS5XX_ACTUATE_INIT_COIL, 0);
+	ret = regmap_write(yas5xx->map, YAS530_ACTUATE_INIT_COIL, 0);
 	if (ret)
 		return ret;
 
 	/* When the initcoil is active this should be around the center */
-	switch (yas5xx->devid) {
+	switch (ci->devid) {
 	case YAS530_DEVICE_ID:
 		center = YAS530_DATA_CENTER;
 		break;
···
 	oy2 = 0;
 
 	for (i = 4; i >= 0; i--) {
-		ret = yas5xx_set_offsets(yas5xx, ox, oy1, oy2);
+		ret = yas530_set_offsets(yas5xx, ox, oy1, oy2);
 		if (ret)
 			return ret;
 
-		ret = yas5xx_measure(yas5xx, &t, &x, &y1, &y2);
+		ret = yas530_measure(yas5xx, &t, &x, &y1, &y2);
 		if (ret)
 			return ret;
 		dev_dbg(yas5xx->dev, "measurement %d: x=%d, y1=%d, y2=%d\n",
 			5-i, x, y1, y2);
 
-		ox = yas5xx_adjust_offset(ox, i, center, x);
-		oy1 = yas5xx_adjust_offset(oy1, i, center, y1);
-		oy2 = yas5xx_adjust_offset(oy2, i, center, y2);
+		ox = yas530_adjust_offset(ox, i, center, x);
+		oy1 = yas530_adjust_offset(oy1, i, center, y1);
+		oy2 = yas530_adjust_offset(oy2, i, center, y2);
 	}
 
 	/* Needed for calibration algorithm */
 	yas5xx->hard_offsets[0] = ox;
 	yas5xx->hard_offsets[1] = oy1;
 	yas5xx->hard_offsets[2] = oy2;
-	ret = yas5xx_set_offsets(yas5xx, ox, oy1, oy2);
+	ret = yas530_set_offsets(yas5xx, ox, oy1, oy2);
 	if (ret)
 		return ret;
 
···
 	return 0;
 }
 
-static int yas5xx_power_on(struct yas5xx *yas5xx)
+/* Used by YAS530, YAS532 and YAS533 */
+static int yas530_power_on(struct yas5xx *yas5xx)
 {
 	unsigned int val;
 	int ret;
 
 	/* Zero the test registers */
-	ret = regmap_write(yas5xx->map, YAS5XX_TEST1, 0);
+	ret = regmap_write(yas5xx->map, YAS530_TEST1, 0);
 	if (ret)
 		return ret;
-	ret = regmap_write(yas5xx->map, YAS5XX_TEST2, 0);
+	ret = regmap_write(yas5xx->map, YAS530_TEST2, 0);
 	if (ret)
 		return ret;
 
 	/* Set up for no interrupts, calibrated clock divider */
 	val = FIELD_PREP(YAS5XX_CONFIG_CCK_MASK, yas5xx->calibration.dck);
-	ret = regmap_write(yas5xx->map, YAS5XX_CONFIG, val);
+	ret = regmap_write(yas5xx->map, YAS530_CONFIG, val);
 	if (ret)
 		return ret;
 
 	/* Measure interval 0 (back-to-back?)  */
-	return regmap_write(yas5xx->map, YAS5XX_MEASURE_INTERVAL, 0);
+	return regmap_write(yas5xx->map, YAS530_MEASURE_INTERVAL, 0);
 }
+
+static int yas537_power_on(struct yas5xx *yas5xx)
+{
+	__be16 buf;
+	int ret;
+	u8 intrvl;
+
+	/* Writing ADCCAL and TRM registers */
+	buf = cpu_to_be16(GENMASK(9, 3));
+	ret = regmap_bulk_write(yas5xx->map, YAS537_ADCCAL, &buf, sizeof(buf));
+	if (ret)
+		return ret;
+	ret = regmap_write(yas5xx->map, YAS537_TRM, GENMASK(7, 0));
+	if (ret)
+		return ret;
+
+	/* The interval value is static in regular operation */
+	intrvl = (YAS537_DEFAULT_SENSOR_DELAY_MS * MILLI
+		 - YAS537_MEASURE_TIME_WORST_US) / 4100;
+	ret = regmap_write(yas5xx->map, YAS537_MEASURE_INTERVAL, intrvl);
+	if (ret)
+		return ret;
+
+	/* The average value is also static in regular operation */
+	ret = regmap_write(yas5xx->map, YAS537_AVR, YAS537_MAG_AVERAGE_32_MASK);
+	if (ret)
+		return ret;
+
+	/* Perform the "rcoil" part but skip the "last_after_rcoil" read */
+	ret = regmap_write(yas5xx->map, YAS537_CONFIG, BIT(3));
+	if (ret)
+		return ret;
+
+	/* Wait until the coil has ramped up */
+	usleep_range(YAS537_MAG_RCOIL_TIME_US, YAS537_MAG_RCOIL_TIME_US + 100);
+
+	return 0;
+}
+
+static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = {
+	[yas530] = {
+		.devid = YAS530_DEVICE_ID,
+		.product_name = "YAS530 MS-3E",
+		.version_names = { "A", "B" },
+		.volatile_reg = yas530_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg),
+		.scaling_val2 = 100000000, /* picotesla to Gauss */
+		.t_ref = 182, /* counts */
+		.min_temp_x10 = -620, /* 1/10:s degrees Celsius */
+		.get_measure = yas530_get_measure,
+		.get_calibration_data = yas530_get_calibration_data,
+		.dump_calibration = yas530_dump_calibration,
+		.measure_offsets = yas530_measure_offsets,
+		.power_on = yas530_power_on,
+	},
+	[yas532] = {
+		.devid = YAS532_DEVICE_ID,
+		.product_name = "YAS532 MS-3R",
+		.version_names = { "AB", "AC" },
+		.volatile_reg = yas530_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg),
+		.scaling_val2 = 100000, /* nanotesla to Gauss */
+		.t_ref = 390, /* counts */
+		.min_temp_x10 = -500, /* 1/10:s degrees Celsius */
+		.get_measure = yas530_get_measure,
+		.get_calibration_data = yas532_get_calibration_data,
+		.dump_calibration = yas530_dump_calibration,
+		.measure_offsets = yas530_measure_offsets,
+		.power_on = yas530_power_on,
+	},
+	[yas533] = {
+		.devid = YAS532_DEVICE_ID,
+		.product_name = "YAS533 MS-3F",
+		.version_names = { "AB", "AC" },
+		.volatile_reg = yas530_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg),
+		.scaling_val2 = 100000, /* nanotesla to Gauss */
+		.t_ref = 390, /* counts */
+		.min_temp_x10 = -500, /* 1/10:s degrees Celsius */
+		.get_measure = yas530_get_measure,
+		.get_calibration_data = yas532_get_calibration_data,
+		.dump_calibration = yas530_dump_calibration,
+		.measure_offsets = yas530_measure_offsets,
+		.power_on = yas530_power_on,
+	},
+	[yas537] = {
+		.devid = YAS537_DEVICE_ID,
+		.product_name = "YAS537 MS-3T",
+		.version_names = { "v0", "v1" }, /* version naming unknown */
+		.volatile_reg = yas537_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas537_volatile_reg),
+		.scaling_val2 = 100000, /* nanotesla to Gauss */
+		.t_ref = 8120, /* counts */
+		.min_temp_x10 = -3860, /* 1/10:s degrees Celsius */
+		.get_measure = yas537_get_measure,
+		.get_calibration_data = yas537_get_calibration_data,
+		.dump_calibration = yas537_dump_calibration,
+		/* .measure_offets is not needed for yas537 */
+		.power_on = yas537_power_on,
+	},
+};
 
 static int yas5xx_probe(struct i2c_client *i2c,
 			const struct i2c_device_id *id)
···
 	struct iio_dev *indio_dev;
 	struct device *dev = &i2c->dev;
 	struct yas5xx *yas5xx;
+	const struct yas5xx_chip_info *ci;
+	int id_check;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*yas5xx));
···
 		return dev_err_probe(dev, ret, "cannot get regulators\n");
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
-	if (ret) {
-		dev_err(dev, "cannot enable regulators\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "cannot enable regulators\n");
 
 	/* See comment in runtime resume callback */
 	usleep_range(31000, 40000);
···
 	/* This will take the device out of reset if need be */
 	yas5xx->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(yas5xx->reset)) {
-		ret = dev_err_probe(dev, PTR_ERR(yas5xx->reset),
-				    "failed to get reset line\n");
+		ret = dev_err_probe(dev, PTR_ERR(yas5xx->reset), "failed to get reset line\n");
 		goto reg_off;
 	}
 
 	yas5xx->map = devm_regmap_init_i2c(i2c, &yas5xx_regmap_config);
 	if (IS_ERR(yas5xx->map)) {
-		dev_err(dev, "failed to allocate register map\n");
-		ret = PTR_ERR(yas5xx->map);
+		ret = dev_err_probe(dev, PTR_ERR(yas5xx->map), "failed to allocate register map\n");
 		goto assert_reset;
 	}
 
-	ret = regmap_read(yas5xx->map, YAS5XX_DEVICE_ID, &yas5xx->devid);
+	ci = device_get_match_data(dev);
+	if (!ci)
+		ci = (const struct yas5xx_chip_info *)id->driver_data;
+	yas5xx->chip_info = ci;
+
+	ret = regmap_read(yas5xx->map, YAS5XX_DEVICE_ID, &id_check);
 	if (ret)
 		goto assert_reset;
 
-	switch (yas5xx->devid) {
-	case YAS530_DEVICE_ID:
-		ret = yas530_get_calibration_data(yas5xx);
-		if (ret)
-			goto assert_reset;
-		dev_info(dev, "detected YAS530 MS-3E %s",
-			 yas5xx->version ? "B" : "A");
-		strncpy(yas5xx->name, "yas530", sizeof(yas5xx->name));
-		break;
-	case YAS532_DEVICE_ID:
-		ret = yas532_get_calibration_data(yas5xx);
-		if (ret)
-			goto assert_reset;
-		dev_info(dev, "detected YAS532/YAS533 MS-3R/F %s",
-			 yas5xx->version ? "AC" : "AB");
-		strncpy(yas5xx->name, "yas532", sizeof(yas5xx->name));
-		break;
-	default:
-		ret = -ENODEV;
-		dev_err(dev, "unhandled device ID %02x\n", yas5xx->devid);
+	if (id_check != ci->devid) {
+		ret = dev_err_probe(dev, -ENODEV,
+				    "device ID %02x doesn't match %s\n",
+				    id_check, id->name);
 		goto assert_reset;
 	}
 
-	yas5xx_dump_calibration(yas5xx);
-	ret = yas5xx_power_on(yas5xx);
+	ret = ci->get_calibration_data(yas5xx);
 	if (ret)
 		goto assert_reset;
-	ret = yas5xx_meaure_offsets(yas5xx);
+
+	dev_info(dev, "detected %s %s\n", ci->product_name,
+		 ci->version_names[yas5xx->version]);
+
+	ci->dump_calibration(yas5xx);
+
+	ret = ci->power_on(yas5xx);
 	if (ret)
 		goto assert_reset;
+
+	if (ci->measure_offsets) {
+		ret = ci->measure_offsets(yas5xx);
+		if (ret)
+			goto assert_reset;
+	}
 
 	indio_dev->info = &yas5xx_info;
 	indio_dev->available_scan_masks = yas5xx_scan_masks;
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->name = yas5xx->name;
+	indio_dev->name = id->name;
 	indio_dev->channels = yas5xx_channels;
 	indio_dev->num_channels = ARRAY_SIZE(yas5xx_channels);
 
···
 					 yas5xx_handle_trigger,
 					 NULL);
 	if (ret) {
-		dev_err(dev, "triggered buffer setup failed\n");
+		dev_err_probe(dev, ret, "triggered buffer setup failed\n");
 		goto assert_reset;
 	}
 
 	ret = iio_device_register(indio_dev);
 	if (ret) {
-		dev_err(dev, "device register failed\n");
+		dev_err_probe(dev, ret, "device register failed\n");
 		goto cleanup_buffer;
 	}
 
···
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
 	int ret;
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
···
 	usleep_range(31000, 40000);
 	gpiod_set_value_cansleep(yas5xx->reset, 0);
 
-	ret = yas5xx_power_on(yas5xx);
+	ret = ci->power_on(yas5xx);
 	if (ret) {
 		dev_err(dev, "cannot power on\n");
 		goto out_reset;
···
 				 yas5xx_runtime_resume, NULL);
 
 static const struct i2c_device_id yas5xx_id[] = {
-	{"yas530", },
-	{"yas532", },
-	{"yas533", },
+	{"yas530", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas530] },
+	{"yas532", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas532] },
+	{"yas533", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas533] },
+	{"yas537", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas537] },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, yas5xx_id);
 
 static const struct of_device_id yas5xx_of_match[] = {
-	{ .compatible = "yamaha,yas530", },
-	{ .compatible = "yamaha,yas532", },
-	{ .compatible = "yamaha,yas533", },
+	{ .compatible = "yamaha,yas530", &yas5xx_chip_info_tbl[yas530] },
+	{ .compatible = "yamaha,yas532", &yas5xx_chip_info_tbl[yas532] },
+	{ .compatible = "yamaha,yas533", &yas5xx_chip_info_tbl[yas533] },
+	{ .compatible = "yamaha,yas537", &yas5xx_chip_info_tbl[yas537] },
 	{}
 };
 MODULE_DEVICE_TABLE(of, yas5xx_of_match);

drivers/iio/pressure/dlhl60d.c

···
 	if (ret)
 		return ret;
 
-	*pressure = get_unaligned_be32(&st->rx_buf[1]) >> 8;
-	*temperature = get_unaligned_be32(&st->rx_buf[3]) &
-		GENMASK(DLH_NUM_TEMP_BITS - 1, 0);
+	*pressure = get_unaligned_be24(&st->rx_buf[1]);
+	*temperature = get_unaligned_be24(&st->rx_buf[4]);
 
 	return 0;
 }

drivers/iio/pressure/icp10100.c

···
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-static int __maybe_unused icp10100_suspend(struct device *dev)
+static int icp10100_suspend(struct device *dev)
 {
 	struct icp10100_state *st = iio_priv(dev_get_drvdata(dev));
 	int ret;
···
 	return ret;
 }
 
-static int __maybe_unused icp10100_resume(struct device *dev)
+static int icp10100_resume(struct device *dev)
 {
 	struct icp10100_state *st = iio_priv(dev_get_drvdata(dev));
 	int ret;
···
 	return ret;
 }
 
-static UNIVERSAL_DEV_PM_OPS(icp10100_pm, icp10100_suspend, icp10100_resume,
-			    NULL);
+static DEFINE_RUNTIME_DEV_PM_OPS(icp10100_pm, icp10100_suspend, icp10100_resume,
+				 NULL);
 
 static const struct of_device_id icp10100_of_match[] = {
 	{
···
 static struct i2c_driver icp10100_driver = {
 	.driver = {
 		.name = "icp10100",
-		.pm = &icp10100_pm,
+		.pm = pm_ptr(&icp10100_pm),
 		.of_match_table = icp10100_of_match,
 	},
 	.probe = icp10100_probe,

drivers/iio/temperature/mlx90632.c

···
 #include <linux/math64.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
···
  *        calculations
  * @object_ambient_temperature: Ambient temperature at object (might differ of
  *                              the ambient temperature of sensor.
+ * @regulator: Regulator of the device
  */
 struct mlx90632_data {
 	struct i2c_client *client;
···
 	u16 emissivity;
 	u8 mtyp;
 	u32 object_ambient_temperature;
+	struct regulator *regulator;
 };
 
 static const struct regmap_range mlx90632_volatile_reg_range[] = {
···
 }
 
 /**
+ * mlx90632_reset_delay() - Give the mlx90632 some time to reset properly
+ * If this is not done, the following I2C command(s) will not be accepted.
+ */
+static void mlx90632_reset_delay(void)
+{
+	usleep_range(150, 200);
+}
+
+/**
  * mlx90632_perform_measurement() - Trigger and retrieve current measurement cycle
  * @data: pointer to mlx90632_data object containing regmap information
  *
···
 	if (ret < 0)
 		return ret;
 
-	/*
-	 * Give the mlx90632 some time to reset properly before sending a new I2C command
-	 * if this is not done, the following I2C command(s) will not be accepted.
-	 */
-	usleep_range(150, 200);
+	mlx90632_reset_delay();
 
 	ret = regmap_write_bits(regmap, MLX90632_REG_CONTROL,
 				 (MLX90632_CFG_MTYP_MASK | MLX90632_CFG_PWR_MASK),
···
 	return mlx90632_pwr_continuous(data->regmap);
 }
 
+static void mlx90632_disable_regulator(void *_data)
+{
+	struct mlx90632_data *data = _data;
+	int ret;
+
+	ret = regulator_disable(data->regulator);
+	if (ret < 0)
+		dev_err(regmap_get_device(data->regmap),
+			"Failed to disable power regulator: %d\n", ret);
+}
+
+static int mlx90632_enable_regulator(struct mlx90632_data *data)
+{
+	int ret;
+
+	ret = regulator_enable(data->regulator);
+	if (ret < 0) {
+		dev_err(regmap_get_device(data->regmap), "Failed to enable power regulator!\n");
+		return ret;
+	}
+
+	mlx90632_reset_delay();
+
+	return ret;
+}
+
 static int mlx90632_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
···
 	indio_dev->info = &mlx90632_info;
 	indio_dev->channels = mlx90632_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mlx90632_channels);
+
+	mlx90632->regulator = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(mlx90632->regulator))
+		return dev_err_probe(&client->dev, PTR_ERR(mlx90632->regulator),
+				     "failed to get vdd regulator");
+
+	ret = mlx90632_enable_regulator(mlx90632);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev, mlx90632_disable_regulator,
+				       mlx90632);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed to setup regulator cleanup action %d\n",
+			ret);
+		return ret;
+	}
 
 	ret = mlx90632_wakeup(mlx90632);
 	if (ret < 0) {

drivers/iio/test/iio-test-rescale.c

···
 	const char *expected_off;
 };
 
-const struct rescale_tc_data scale_cases[] = {
+static const struct rescale_tc_data scale_cases[] = {
 	/*
 	 * Typical use cases
 	 */
···
 	},
 };
 
-const struct rescale_tc_data offset_cases[] = {
+static const struct rescale_tc_data offset_cases[] = {
 	/*
 	 * Typical use cases
 	 */

drivers/staging/iio/Kconfig

···
 source "drivers/staging/iio/accel/Kconfig"
 source "drivers/staging/iio/adc/Kconfig"
 source "drivers/staging/iio/addac/Kconfig"
-source "drivers/staging/iio/cdc/Kconfig"
 source "drivers/staging/iio/frequency/Kconfig"
 source "drivers/staging/iio/impedance-analyzer/Kconfig"
 source "drivers/staging/iio/meter/Kconfig"

drivers/staging/iio/Makefile

···
 obj-y += accel/
 obj-y += adc/
 obj-y += addac/
-obj-y += cdc/
 obj-y += frequency/
 obj-y += impedance-analyzer/
 obj-y += meter/

drivers/staging/iio/cdc/Kconfig

···
-# SPDX-License-Identifier: GPL-2.0
-#
-# CDC drivers
-#
-menu "Capacitance to digital converters"
-
-config AD7746
-	tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver"
-	depends on I2C
-	help
-	  Say yes here to build support for Analog Devices capacitive sensors.
-	  (AD7745, AD7746, AD7747) Provides direct access via sysfs.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ad7746.
-
-endmenu

drivers/staging/iio/cdc/Makefile

···
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for industrial I/O CDC drivers
-#
-
-obj-$(CONFIG_AD7746) += ad7746.o

drivers/staging/iio/cdc/ad7746.c drivers/iio/cdc/ad7746.c

···
  * Copyright 2011 Analog Devices Inc.
  */
 
+#include <linux/bitfield.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/i2c.h>
···
 #include <linux/stat.h>
 #include <linux/sysfs.h>
 
+#include <asm/unaligned.h>
+
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
-/*
- * AD7746 Register Definition
- */
+/* AD7746 Register Definition */
 
 #define AD7746_REG_STATUS		0
 #define AD7746_REG_CAP_DATA_HIGH	1
···
 #define AD7746_CAPSETUP_CACHOP		BIT(0)
 
 /* Voltage/Temperature Setup Register Bit Designations (AD7746_REG_VT_SETUP) */
-#define AD7746_VTSETUP_VTEN		(1 << 7)
-#define AD7746_VTSETUP_VTMD_INT_TEMP	(0 << 5)
-#define AD7746_VTSETUP_VTMD_EXT_TEMP	(1 << 5)
-#define AD7746_VTSETUP_VTMD_VDD_MON	(2 << 5)
-#define AD7746_VTSETUP_VTMD_EXT_VIN	(3 << 5)
+#define AD7746_VTSETUP_VTEN		BIT(7)
+#define AD7746_VTSETUP_VTMD_MASK	GENMASK(6, 5)
+#define AD7746_VTSETUP_VTMD_INT_TEMP	0
+#define AD7746_VTSETUP_VTMD_EXT_TEMP	1
+#define AD7746_VTSETUP_VTMD_VDD_MON	2
+#define AD7746_VTSETUP_VTMD_EXT_VIN	3
 #define AD7746_VTSETUP_EXTREF		BIT(4)
 #define AD7746_VTSETUP_VTSHORT		BIT(1)
 #define AD7746_VTSETUP_VTCHOP		BIT(0)
···
 #define AD7746_EXCSETUP_NEXCB		BIT(4)
 #define AD7746_EXCSETUP_EXCA		BIT(3)
 #define AD7746_EXCSETUP_NEXCA		BIT(2)
-#define AD7746_EXCSETUP_EXCLVL(x)	(((x) & 0x3) << 0)
+#define AD7746_EXCSETUP_EXCLVL_MASK	GENMASK(1, 0)
 
 /* Config Register Bit Designations (AD7746_REG_CFG) */
-#define AD7746_CONF_VTFS_SHIFT		6
-#define AD7746_CONF_CAPFS_SHIFT		3
 #define AD7746_CONF_VTFS_MASK		GENMASK(7, 6)
 #define AD7746_CONF_CAPFS_MASK		GENMASK(5, 3)
-#define AD7746_CONF_MODE_IDLE		(0 << 0)
-#define AD7746_CONF_MODE_CONT_CONV	(1 << 0)
-#define AD7746_CONF_MODE_SINGLE_CONV	(2 << 0)
-#define AD7746_CONF_MODE_PWRDN		(3 << 0)
-#define AD7746_CONF_MODE_OFFS_CAL	(5 << 0)
-#define AD7746_CONF_MODE_GAIN_CAL	(6 << 0)
+#define AD7746_CONF_MODE_MASK		GENMASK(2, 0)
+#define AD7746_CONF_MODE_IDLE		0
+#define AD7746_CONF_MODE_CONT_CONV	1
+#define AD7746_CONF_MODE_SINGLE_CONV	2
+#define AD7746_CONF_MODE_PWRDN		3
+#define AD7746_CONF_MODE_OFFS_CAL	5
+#define AD7746_CONF_MODE_GAIN_CAL	6
 
 /* CAPDAC Register Bit Designations (AD7746_REG_CAPDACx) */
 #define AD7746_CAPDAC_DACEN		BIT(7)
-#define AD7746_CAPDAC_DACP(x)		((x) & 0x7F)
+#define AD7746_CAPDAC_DACP_MASK		GENMASK(6, 0)
 
 struct ad7746_chip_info {
 	struct i2c_client *client;
···
 	u8	vt_setup;
 	u8	capdac[2][2];
 	s8	capdac_set;
-
-	union {
-		__be32 d32;
-		u8 d8[4];
-	} data ____cacheline_aligned;
 };
 
 enum ad7746_chan {
···
 	CIN2_DIFF,
 };
 
+struct ad7746_chan_info {
+	u8 addr;
+	union {
+		u8 vtmd;
+		struct { /* CAP SETUP fields */
+			unsigned int cin2 : 1;
+			unsigned int capdiff : 1;
+		};
+	};
+};
+
+static const struct ad7746_chan_info ad7746_chan_info[] = {
+	[VIN] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_EXT_VIN,
+	},
+	[VIN_VDD] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_VDD_MON,
+	},
+	[TEMP_INT] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_INT_TEMP,
+	},
+	[TEMP_EXT] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_EXT_TEMP,
+	},
+	[CIN1] = {
+		.addr = AD7746_REG_CAP_DATA_HIGH,
+	},
+	[CIN1_DIFF] = {
+		.addr =  AD7746_REG_CAP_DATA_HIGH,
+		.capdiff = 1,
+	},
+	[CIN2] = {
+		.addr = AD7746_REG_CAP_DATA_HIGH,
+		.cin2 = 1,
+	},
+	[CIN2_DIFF] = {
+		.addr = AD7746_REG_CAP_DATA_HIGH,
+		.cin2 = 1,
+		.capdiff = 1,
+	},
+};
+
 static const struct iio_chan_spec ad7746_channels[] = {
 	[VIN] = {
 		.type = IIO_VOLTAGE,
 		.indexed = 1,
 		.channel = 0,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
-			BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_EXT_VIN,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = VIN,
 	},
 	[VIN_VDD] = {
 		.type = IIO_VOLTAGE,
 		.indexed = 1,
 		.channel = 1,
 		.extend_name = "supply",
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
-			BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_VDD_MON,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = VIN_VDD,
 	},
 	[TEMP_INT] = {
 		.type = IIO_TEMP,
 		.indexed = 1,
 		.channel = 0,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_INT_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+		.address = TEMP_INT,
 	},
 	[TEMP_EXT] = {
 		.type = IIO_TEMP,
 		.indexed = 1,
 		.channel = 1,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_EXT_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+		.address = TEMP_EXT,
 	},
 	[CIN1] = {
 		.type = IIO_CAPACITANCE,
···
 		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
 		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8,
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN1,
 	},
 	[CIN1_DIFF] = {
 		.type = IIO_CAPACITANCE,
···
 		.channel = 0,
 		.channel2 = 2,
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
+		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT),
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
 		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8 |
-			AD7746_CAPSETUP_CAPDIFF
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN1_DIFF,
 	},
 	[CIN2] = {
 		.type = IIO_CAPACITANCE,
···
 		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
 		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8 |
-			AD7746_CAPSETUP_CIN2,
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN2,
 	},
 	[CIN2_DIFF] = {
 		.type = IIO_CAPACITANCE,
···
 		.channel = 1,
 		.channel2 = 3,
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
+		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT),
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
 		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8 |
-			AD7746_CAPSETUP_CAPDIFF | AD7746_CAPSETUP_CIN2,
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN2_DIFF,
 	}
 };
 
 /* Values are Update Rate (Hz), Conversion Time (ms) + 1*/
 static const unsigned char ad7746_vt_filter_rate_table[][2] = {
-	{50, 20 + 1}, {31, 32 + 1}, {16, 62 + 1}, {8, 122 + 1},
+	{ 50, 20 + 1 }, { 31, 32 + 1 }, { 16, 62 + 1 }, { 8, 122 + 1 },
 };
 
 static const unsigned char ad7746_cap_filter_rate_table[][2] = {
-	{91, 11 + 1}, {84, 12 + 1}, {50, 20 + 1}, {26, 38 + 1},
-	{16, 62 + 1}, {13, 77 + 1}, {11, 92 + 1}, {9, 110 + 1},
+	{ 91, 11 + 1 }, { 84, 12 + 1 }, { 50, 20 + 1 }, { 26, 38 + 1 },
+	{ 16, 62 + 1 }, { 13, 77 + 1 }, { 11, 92 + 1 }, { 9, 110 + 1 },
 };
 
 static int ad7746_set_capdac(struct ad7746_chip_info *chip, int channel)
···
 
 	switch (chan->type) {
 	case IIO_CAPACITANCE:
-		cap_setup = (chan->address & 0xFF) | AD7746_CAPSETUP_CAPEN;
+		cap_setup = FIELD_PREP(AD7746_CAPSETUP_CIN2,
+				       ad7746_chan_info[chan->address].cin2) |
+			FIELD_PREP(AD7746_CAPSETUP_CAPDIFF,
+				   ad7746_chan_info[chan->address].capdiff) |
+			FIELD_PREP(AD7746_CAPSETUP_CAPEN, 1);
 		vt_setup = chip->vt_setup & ~AD7746_VTSETUP_VTEN;
-		idx = (chip->config & AD7746_CONF_CAPFS_MASK) >>
-			AD7746_CONF_CAPFS_SHIFT;
+		idx = FIELD_GET(AD7746_CONF_CAPFS_MASK, chip->config);
 		delay = ad7746_cap_filter_rate_table[idx][1];
 
 		ret = ad7746_set_capdac(chip, chan->channel);
···
 		break;
 	case IIO_VOLTAGE:
 	case IIO_TEMP:
-		vt_setup = (chan->address & 0xFF) | AD7746_VTSETUP_VTEN;
+		vt_setup = FIELD_PREP(AD7746_VTSETUP_VTMD_MASK,
+				      ad7746_chan_info[chan->address].vtmd) |
+			FIELD_PREP(AD7746_VTSETUP_VTEN, 1);
 		cap_setup = chip->cap_setup & ~AD7746_CAPSETUP_CAPEN;
-		idx = (chip->config & AD7746_CONF_VTFS_MASK) >>
-			AD7746_CONF_VTFS_SHIFT;
+		idx = FIELD_GET(AD7746_CONF_VTFS_MASK, chip->config);
 		delay = ad7746_cap_filter_rate_table[idx][1];
 		break;
 	default:
···
 		return ret;
 
 	return ad7746_start_calib(dev, attr, buf, len,
-				  AD7746_CONF_MODE_OFFS_CAL);
+				  FIELD_PREP(AD7746_CONF_MODE_MASK,
+					     AD7746_CONF_MODE_OFFS_CAL));
 }
 
 static ssize_t ad7746_start_gain_calib(struct device *dev,
···
 		return ret;
 
 	return ad7746_start_calib(dev, attr, buf, len,
-				  AD7746_CONF_MODE_GAIN_CAL);
+				  FIELD_PREP(AD7746_CONF_MODE_MASK,
+					     AD7746_CONF_MODE_GAIN_CAL));
 }
 
 static IIO_DEVICE_ATTR(in_capacitance0_calibbias_calibration,
···
 		i = ARRAY_SIZE(ad7746_cap_filter_rate_table) - 1;
 
 	chip->config &= ~AD7746_CONF_CAPFS_MASK;
-	chip->config |= i << AD7746_CONF_CAPFS_SHIFT;
+	chip->config |= FIELD_PREP(AD7746_CONF_CAPFS_MASK, i);
 
 	return 0;
 }
···
 		i = ARRAY_SIZE(ad7746_vt_filter_rate_table) - 1;
 
 	chip->config &= ~AD7746_CONF_VTFS_MASK;
-	chip->config |= i << AD7746_CONF_VTFS_SHIFT;
+	chip->config |= FIELD_PREP(AD7746_CONF_VTFS_MASK, i);
 
 	return 0;
 }
-
-static IIO_CONST_ATTR(in_voltage_sampling_frequency_available, "50 31 16 8");
-static IIO_CONST_ATTR(in_capacitance_sampling_frequency_available,
-		       "91 84 50 26 16 13 11 9");
 
 static struct attribute *ad7746_attributes[] = {
 	&iio_dev_attr_in_capacitance0_calibbias_calibration.dev_attr.attr,
···
 	&iio_dev_attr_in_capacitance1_calibscale_calibration.dev_attr.attr,
 	&iio_dev_attr_in_capacitance1_calibbias_calibration.dev_attr.attr,
 	&iio_dev_attr_in_voltage0_calibscale_calibration.dev_attr.attr,
-	&iio_const_attr_in_voltage_sampling_frequency_available.dev_attr.attr,
-	&iio_const_attr_in_capacitance_sampling_frequency_available.dev_attr.attr,
 	NULL,
 };
 
···
 	struct ad7746_chip_info *chip = iio_priv(indio_dev);
 	int ret, reg;
 
-	mutex_lock(&chip->lock);
-
 	switch (mask) {
 	case IIO_CHAN_INFO_CALIBSCALE:
-		if (val != 1) {
-			ret = -EINVAL;
-			goto out;
-		}
+		if (val != 1)
+			return -EINVAL;
 
 		val = (val2 * 1024) / 15625;
 
···
 			reg = AD7746_REG_VOLT_GAINH;
 			break;
 		default:
-			ret = -EINVAL;
-			goto out;
+			return -EINVAL;
 		}
 
+		mutex_lock(&chip->lock);
 		ret = i2c_smbus_write_word_swapped(chip->client, reg, val);
+		mutex_unlock(&chip->lock);
 		if (ret < 0)
-			goto out;
+			return ret;
 
-		ret = 0;
-		break;
+		return 0;
 	case IIO_CHAN_INFO_CALIBBIAS:
-		if (val < 0 || val > 0xFFFF) {
-			ret = -EINVAL;
-			goto out;
-		}
+		if (val < 0 || val > 0xFFFF)
+			return -EINVAL;
+
+		mutex_lock(&chip->lock);
 		ret = i2c_smbus_write_word_swapped(chip->client,
 						   AD7746_REG_CAP_OFFH, val);
+		mutex_unlock(&chip->lock);
 		if (ret < 0)
-			goto out;
+			return ret;
 
-		ret = 0;
-		break;
+		return 0;
 	case IIO_CHAN_INFO_OFFSET:
-		if (val < 0 || val > 43008000) { /* 21pF */
-			ret = -EINVAL;
-			goto out;
-		}
+	case IIO_CHAN_INFO_ZEROPOINT:
+		if (val < 0 || val > 43008000) /* 21pF */
+			return -EINVAL;
 
 		/*
 		 * CAPDAC Scale = 21pF_typ / 127
···
 		 */
 
 		val /= 338646;
-
+		mutex_lock(&chip->lock);
 		chip->capdac[chan->channel][chan->differential] = val > 0 ?
-			AD7746_CAPDAC_DACP(val) | AD7746_CAPDAC_DACEN : 0;
+			FIELD_PREP(AD7746_CAPDAC_DACP_MASK, val) | AD7746_CAPDAC_DACEN : 0;
 
 		ret = ad7746_set_capdac(chip, chan->channel);
-		if (ret < 0)
-			goto out;
+		if (ret < 0) {
+			mutex_unlock(&chip->lock);
+			return ret;
+		}
 
 		chip->capdac_set = chan->channel;
+		mutex_unlock(&chip->lock);
 
-		ret = 0;
-		break;
+		return 0;
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		if (val2) {
-			ret = -EINVAL;
-			goto out;
-		}
+		if (val2)
+			return -EINVAL;
 
 		switch (chan->type) {
 		case IIO_CAPACITANCE:
+			mutex_lock(&chip->lock);
 			ret = ad7746_store_cap_filter_rate_setup(chip, val);
-			break;
+			mutex_unlock(&chip->lock);
+			return ret;
 		case IIO_VOLTAGE:
+			mutex_lock(&chip->lock);
 			ret = ad7746_store_vt_filter_rate_setup(chip, val);
-			break;
+			mutex_unlock(&chip->lock);
+			return ret;
 		default:
-			ret = -EINVAL;
+			return -EINVAL;
 		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static const int ad7746_v_samp_freq[] = { 50, 31, 16, 8, };
+static const int ad7746_cap_samp_freq[] = { 91, 84, 50, 26, 16, 13, 11, 9, };
+
+static int ad7746_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, const int **vals,
+			     int *type, int *length, long mask)
+{
+	if (mask != IIO_CHAN_INFO_SAMP_FREQ)
+		return -EINVAL;
+
+	switch (chan->type) {
+	case IIO_VOLTAGE:
+		*vals = ad7746_v_samp_freq;
+		*length = ARRAY_SIZE(ad7746_v_samp_freq);
+		break;
+	case IIO_CAPACITANCE:
+		*vals = ad7746_cap_samp_freq;
+		*length = ARRAY_SIZE(ad7746_cap_samp_freq);
 		break;
 	default:
-		ret = -EINVAL;
+		return -EINVAL;
 	}
+	*type = IIO_VAL_INT;
+	return IIO_AVAIL_LIST;
+}
 
-out:
-	mutex_unlock(&chip->lock);
-	return ret;
+static int ad7746_read_channel(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val)
+{
+	struct ad7746_chip_info *chip = iio_priv(indio_dev);
+	int ret, delay;
+	u8 data[3];
+	u8 regval;
+
+	ret = ad7746_select_channel(indio_dev, chan);
+	if (ret < 0)
+		return ret;
+	delay = ret;
+
+	regval = chip->config | FIELD_PREP(AD7746_CONF_MODE_MASK,
+					   AD7746_CONF_MODE_SINGLE_CONV);
+	ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, regval);
+	if (ret < 0)
+		return ret;
+
+	msleep(delay);
+	/* Now read the actual register */
+	ret = i2c_smbus_read_i2c_block_data(chip->client,
+					    ad7746_chan_info[chan->address].addr,
+					    sizeof(data), data);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Offset applied internally becaue the _offset userspace interface is
+	 * needed for the CAP DACs which apply a controllable offset.
+	 */
+	*val = get_unaligned_be24(data) - 0x800000;
+
+	return 0;
 }
 
 static int ad7746_read_raw(struct iio_dev *indio_dev,
···
 			   long mask)
 {
 	struct ad7746_chip_info *chip = iio_priv(indio_dev);
-	int ret, delay, idx;
-	u8 regval, reg;
-
-	mutex_lock(&chip->lock);
+	int ret, idx;
+	u8 reg;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-	case IIO_CHAN_INFO_PROCESSED:
-		ret = ad7746_select_channel(indio_dev, chan);
+		mutex_lock(&chip->lock);
+		ret = ad7746_read_channel(indio_dev, chan, val);
+		mutex_unlock(&chip->lock);
 		if (ret < 0)
-			goto out;
-		delay = ret;
+			return ret;
 
-		regval = chip->config | AD7746_CONF_MODE_SINGLE_CONV;
-		ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG,
-						regval);
-		if (ret < 0)
-			goto out;
-
-		msleep(delay);
-		/* Now read the actual register */
-
-		ret = i2c_smbus_read_i2c_block_data(chip->client,
-						    chan->address >> 8, 3,
-						    &chip->data.d8[1]);
-
-		if (ret < 0)
-			goto out;
-
-		*val = (be32_to_cpu(chip->data.d32) & 0xFFFFFF) - 0x800000;
-
-		switch (chan->type) {
-		case IIO_TEMP:
-			/*
-			 * temperature in milli degrees Celsius
-			 * T = ((*val / 2048) - 4096) * 1000
-			 */
-			*val = (*val * 125) / 256;
-			break;
-		case IIO_VOLTAGE:
-			if (chan->channel == 1) /* supply_raw*/
-				*val = *val * 6;
-			break;
-		default:
-			break;
-		}
-
-		ret = IIO_VAL_INT;
-		break;
+		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_CALIBSCALE:
 		switch (chan->type) {
 		case IIO_CAPACITANCE:
···
 			reg = AD7746_REG_VOLT_GAINH;
 			break;
 		default:
-			ret = -EINVAL;
-			goto out;
+			return -EINVAL;
 		}
 
+		mutex_lock(&chip->lock);
 		ret = i2c_smbus_read_word_swapped(chip->client, reg);
+		mutex_unlock(&chip->lock);
 		if (ret < 0)
-			goto out;
+			return ret;
 		/* 1 + gain_val / 2^16 */
 		*val = 1;
 		*val2 = (15625 * ret) / 1024;
 
-		ret = IIO_VAL_INT_PLUS_MICRO;
-		break;
+		return IIO_VAL_INT_PLUS_MICRO;
 	case IIO_CHAN_INFO_CALIBBIAS:
+		mutex_lock(&chip->lock);
 		ret = i2c_smbus_read_word_swapped(chip->client,
 						  AD7746_REG_CAP_OFFH);
+		mutex_unlock(&chip->lock);
 		if (ret < 0)
-			goto out;
+			return ret;
 		*val = ret;
 
-		ret = IIO_VAL_INT;
-		break;
+		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_OFFSET:
-		*val = AD7746_CAPDAC_DACP(chip->capdac[chan->channel]
-					  [chan->differential]) * 338646;
+	case IIO_CHAN_INFO_ZEROPOINT:
+		*val = FIELD_GET(AD7746_CAPDAC_DACP_MASK,
+				 chip->capdac[chan->channel][chan->differential]) * 338646;
 
-		ret = IIO_VAL_INT;
-		break;
+		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		switch (chan->type) {
 		case IIO_CAPACITANCE:
 			/* 8.192pf / 2^24 */
 			*val =  0;
 			*val2 = 488;
-			ret = IIO_VAL_INT_PLUS_NANO;
-			break;
+			return IIO_VAL_INT_PLUS_NANO;
 		case IIO_VOLTAGE:
 			/* 1170mV / 2^23 */
 			*val = 1170;
+			if (chan->channel == 1)
+				*val *= 6;
 			*val2 = 23;
-			ret = IIO_VAL_FRACTIONAL_LOG2;
-			break;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		case IIO_TEMP:
+			*val = 125;
+			*val2 = 8;
+			return IIO_VAL_FRACTIONAL_LOG2;
 		default:
-			ret = -EINVAL;
-			break;
+			return -EINVAL;
 		}
-
-		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		switch (chan->type) {
 		case IIO_CAPACITANCE:
-			idx = (chip->config & AD7746_CONF_CAPFS_MASK) >>
-				AD7746_CONF_CAPFS_SHIFT;
+			idx = FIELD_GET(AD7746_CONF_CAPFS_MASK, chip->config);
 			*val = ad7746_cap_filter_rate_table[idx][0];
-			ret = IIO_VAL_INT;
-			break;
+			return IIO_VAL_INT;
 		case IIO_VOLTAGE:
-			idx = (chip->config & AD7746_CONF_VTFS_MASK) >>
-				AD7746_CONF_VTFS_SHIFT;
+			idx = FIELD_GET(AD7746_CONF_VTFS_MASK, chip->config);
 			*val = ad7746_vt_filter_rate_table[idx][0];
-			ret = IIO_VAL_INT;
-			break;
+			return IIO_VAL_INT;
 		default:
-			ret = -EINVAL;
+			return -EINVAL;
 		}
-		break;
 	default:
-		ret = -EINVAL;
+		return -EINVAL;
 	}
-out:
-	mutex_unlock(&chip->lock);
-	return ret;
 }
 
 static const struct iio_info ad7746_info = {
 	.attrs = &ad7746_attribute_group,
 	.read_raw = ad7746_read_raw,
+	.read_avail = ad7746_read_avail,
 	.write_raw = ad7746_write_raw,
 };
 
···
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
 	if (!indio_dev)
 		return -ENOMEM;
+
 	chip = iio_priv(indio_dev);
 	mutex_init(&chip->lock);
-	/* this is only used for device removal purposes */
-	i2c_set_clientdata(client, indio_dev);
 
 	chip->client = client;
 	chip->capdac_set = -1;
···
 	if (!ret) {
 		switch (vdd_permille) {
 		case 125:
-			regval |= AD7746_EXCSETUP_EXCLVL(0);
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 0);
 			break;
 		case 250:
-			regval |= AD7746_EXCSETUP_EXCLVL(1);
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 1);
 			break;
 		case 375:
-			regval |= AD7746_EXCSETUP_EXCLVL(2);
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 2);
 			break;
 		case 500:
-			regval |= AD7746_EXCSETUP_EXCLVL(3);
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 3);
 			break;
 		default:
 			break;
 		}
 	}
 
-	ret = i2c_smbus_write_byte_data(chip->client,
-					AD7746_REG_EXC_SETUP, regval);
+	ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_EXC_SETUP,
+					regval);
 	if (ret < 0)
 		return ret;
 
···
 	{ "ad7747", 7747 },
 	{}
 };
-
 MODULE_DEVICE_TABLE(i2c, ad7746_id);
 
 static const struct of_device_id ad7746_of_match[] = {
···
 	{ .compatible = "adi,ad7747" },
 	{ },
 };
-
 MODULE_DEVICE_TABLE(of, ad7746_of_match);
 
 static struct i2c_driver ad7746_driver = {

drivers/staging/iio/frequency/ad9832.c

···
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
-		__be16			freq_data[4]____cacheline_aligned;
+		__be16			freq_data[4];
 		__be16			phase_data[2];
 		__be16			data;
-	};
+	} __aligned(IIO_DMA_MINALIGN);
 };
 
 static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout)

drivers/staging/iio/frequency/ad9834.c

···
 	 * DMA (thus cache coherency maintenance) requires the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	__be16				data ____cacheline_aligned;
+	__be16				data __aligned(IIO_DMA_MINALIGN);
 	__be16				freq_data[2];
 };
 

drivers/staging/iio/meter/ade7854.h

···
 			 int bits);
 	int irq;
 	struct mutex buf_lock;
-	u8 tx[ADE7854_MAX_TX] ____cacheline_aligned;
+	u8 tx[ADE7854_MAX_TX] __aligned(IIO_DMA_MINALIGN);
 	u8 rx[ADE7854_MAX_RX];
 
 };

drivers/staging/iio/resolver/ad2s1210.c

···
 	bool hysteresis;
 	u8 resolution;
 	enum ad2s1210_mode mode;
-	u8 rx[2] ____cacheline_aligned;
-	u8 tx[2] ____cacheline_aligned;
+	u8 rx[2] __aligned(IIO_DMA_MINALIGN);
+	u8 tx[2];
 };
 
 static const int ad2s1210_mode_vals[4][2] = {

drivers/thermal/qcom/qcom-spmi-adc-tm5.c

···
 	}
 	channel->adc_channel = args.args[0];
 
-	channel->iio = devm_of_iio_channel_get_by_name(adc_tm->dev, node, NULL);
+	channel->iio = devm_fwnode_iio_channel_get_by_name(adc_tm->dev,
+							   of_fwnode_handle(node), NULL);
 	if (IS_ERR(channel->iio)) {
 		ret = PTR_ERR(channel->iio);
 		if (ret != -EPROBE_DEFER)

include/dt-bindings/iio/adc/at91-sama5d2_adc.h

···
 /* pressure channel index */
 #define AT91_SAMA5D2_ADC_P_CHANNEL		26
 
+/* SAMA7G5 Temperature sensor channel index. */
+#define AT91_SAMA7G5_ADC_TEMP_CHANNEL		31
+
 #endif

include/linux/iio/consumer.h

···
 struct iio_dev;
 struct iio_chan_spec;
 struct device;
-struct device_node;
+struct fwnode_handle;
 
 /**
  * struct iio_channel - everything needed for a consumer to use a channel
···
 struct iio_channel *devm_iio_channel_get_all(struct device *dev);
 
 /**
- * of_iio_channel_get_by_name() - get description of all that is needed to access channel.
- * @np:			Pointer to consumer device tree node
+ * fwnode_iio_channel_get_by_name() - get description of all that is needed to access channel.
+ * @fwnode:		Pointer to consumer Firmware node
  * @consumer_channel:	Unique name to identify the channel on the consumer
  *			side. This typically describes the channels use within
  *			the consumer. E.g. 'battery_voltage'
  */
-#ifdef CONFIG_OF
-struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, const char *name);
-#else
-static inline struct iio_channel *
-of_iio_channel_get_by_name(struct device_node *np, const char *name)
-{
-	return NULL;
-}
-#endif
+struct iio_channel *fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode,
+						   const char *name);
 
 /**
- * devm_of_iio_channel_get_by_name() - Resource managed version of of_iio_channel_get_by_name().
+ * devm_fwnode_iio_channel_get_by_name() - Resource managed version of
+ *					   fwnode_iio_channel_get_by_name().
  * @dev:		Pointer to consumer device.
- * @np:			Pointer to consumer device tree node
+ * @fwnode:		Pointer to consumer Firmware node
  * @consumer_channel:	Unique name to identify the channel on the consumer
  *			side. This typically describes the channels use within
  *			the consumer. E.g. 'battery_voltage'
···
  * The allocated iio channel is automatically released when the device is
  * unbound.
  */
-struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev,
-						    struct device_node *np,
-						    const char *consumer_channel);
+struct iio_channel *devm_fwnode_iio_channel_get_by_name(struct device *dev,
+							struct fwnode_handle *fwnode,
+							const char *consumer_channel);
 
 struct iio_cb_buffer;
 /**

include/linux/iio/iio-opaque.h

···
  *				checked by device drivers but should be considered
  *				read-only as this is a core internal bit
  * @driver_module:		used to make it harder to undercut users
+ * @mlock_key:			lockdep class for iio_dev lock
  * @info_exist_lock:		lock to prevent use during removal
  * @trig_readonly:		mark the current trigger immutable
  * @event_interface:		event chrdevs associated with interrupt lines
···
 	int				currentmode;
 	int				id;
 	struct module			*driver_module;
+	struct lock_class_key		mlock_key;
 	struct mutex			info_exist_lock;
 	bool				trig_readonly;
 	struct iio_event_interface	*event_interface;

include/linux/iio/iio.h

···
  * Currently assumes nano seconds.
  */
 
-struct of_phandle_args;
+struct fwnode_reference_args;
 
 enum iio_shared_by {
 	IIO_SEPARATE,
···
  *			provide a custom of_xlate function that reads the
  *			*args* and returns the appropriate index in registered
  *			IIO channels array.
+ * @fwnode_xlate:	fwnode based function pointer to obtain channel specifier index.
+ *			Functionally the same as @of_xlate.
  * @hwfifo_set_watermark: function pointer to set the current hardware
  *			fifo watermark level; see hwfifo_* entries in
  *			Documentation/ABI/testing/sysfs-bus-iio for details on
···
 	int (*debugfs_reg_access)(struct iio_dev *indio_dev,
 				  unsigned reg, unsigned writeval,
 				  unsigned *readval);
-	int (*of_xlate)(struct iio_dev *indio_dev,
-			const struct of_phandle_args *iiospec);
+	int (*fwnode_xlate)(struct iio_dev *indio_dev,
+			    const struct fwnode_reference_args *iiospec);
 	int (*hwfifo_set_watermark)(struct iio_dev *indio_dev, unsigned val);
 	int (*hwfifo_flush_to_buffer)(struct iio_dev *indio_dev,
 				      unsigned count);

include/linux/iio/types.h

···
 	IIO_EV_INFO_HIGH_PASS_FILTER_3DB,
 	IIO_EV_INFO_LOW_PASS_FILTER_3DB,
 	IIO_EV_INFO_TIMEOUT,
+	IIO_EV_INFO_RESET_TIMEOUT,
+	IIO_EV_INFO_TAP2_MIN_DELAY,
 };
 
 #define IIO_VAL_INT 1
···
 	IIO_CHAN_INFO_OVERSAMPLING_RATIO,
 	IIO_CHAN_INFO_THERMOCOUPLE_TYPE,
 	IIO_CHAN_INFO_CALIBAMBIENT,
+	IIO_CHAN_INFO_ZEROPOINT,
 };
 
 #endif /* _IIO_TYPES_H_ */

include/linux/string_helpers.h

···
 	return v ? "enabled" : "disabled";
 }
 
+static inline const char *str_read_write(bool v)
+{
+	return v ? "read" : "write";
+}
+
 #endif

include/linux/units.h

···
 #define PICO	1000000000000ULL
 #define FEMTO	1000000000000000ULL
 
+#define NANOHZ_PER_HZ		1000000000UL
+#define MICROHZ_PER_HZ		1000000UL
+#define MILLIHZ_PER_HZ		1000UL
 #define HZ_PER_KHZ		1000UL
 #define KHZ_PER_MHZ		1000UL
 #define HZ_PER_MHZ		1000000UL

include/uapi/linux/iio/types.h

···
 	IIO_EV_TYPE_MAG_ADAPTIVE,
 	IIO_EV_TYPE_CHANGE,
 	IIO_EV_TYPE_MAG_REFERENCED,
+	IIO_EV_TYPE_GESTURE,
 };
 
 enum iio_event_direction {
···
 	IIO_EV_DIR_RISING,
 	IIO_EV_DIR_FALLING,
 	IIO_EV_DIR_NONE,
+	IIO_EV_DIR_SINGLETAP,
+	IIO_EV_DIR_DOUBLETAP,
 };
 
 #endif /* _UAPI_IIO_TYPES_H_ */

tools/iio/iio_event_monitor.c

···
 	[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
 	[IIO_EV_TYPE_CHANGE] = "change",
 	[IIO_EV_TYPE_MAG_REFERENCED] = "mag_referenced",
+	[IIO_EV_TYPE_GESTURE] = "gesture",
 };
 
 static const char * const iio_ev_dir_text[] = {
 	[IIO_EV_DIR_EITHER] = "either",
 	[IIO_EV_DIR_RISING] = "rising",
-	[IIO_EV_DIR_FALLING] = "falling"
+	[IIO_EV_DIR_FALLING] = "falling",
+	[IIO_EV_DIR_SINGLETAP] = "singletap",
+	[IIO_EV_DIR_DOUBLETAP] = "doubletap",
 };
 
 static const char * const iio_modifier_names[] = {
···
 	case IIO_EV_TYPE_THRESH_ADAPTIVE:
 	case IIO_EV_TYPE_MAG_ADAPTIVE:
 	case IIO_EV_TYPE_CHANGE:
+	case IIO_EV_TYPE_GESTURE:
 		break;
 	default:
 		return false;
···
 	case IIO_EV_DIR_EITHER:
 	case IIO_EV_DIR_RISING:
 	case IIO_EV_DIR_FALLING:
+	case IIO_EV_DIR_SINGLETAP:
+	case IIO_EV_DIR_DOUBLETAP:
 	case IIO_EV_DIR_NONE:
 		break;
 	default: