Merge tag 'iio-for-6.7a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: 1st set of new device support, features and cleanup for 6.7

Particularly great to see a resolver driver move out of staging via a
massive set of changes.  Only took 13 years :)

One small patch added then reverted due to a report of test breakage
(ashai-kasei,ak8975: Drop deprecated enums.)

An immutable branch was used for some hid-senors changes in case
there was a need to take them into the HID tree as well.

New device support
-----------------

adi,hmc425a
  - Add support for HMC540SLP3E broadband 4-bit digital attenuator.
kionix,kx022a
  - Add support for the kx132-1211 accelerometer. Require significant
    driver rework to enable this including add a chip type specific
    structure to deal with the chip differences.
  - Add support for the kx132acr-lbz accelerometer (subset of the kx022a
    feature set).
lltc,ltc2309
  - New driver for this 8 channel ADC.
microchip,mcp3911
  - Add support for rest of mcp391x family of ADCs (there are various
    differences beyond simple channel count variation.
    Series includes some general driver cleanup.
microchip,mcp3564
  - New driver for MCP3461, MCP3462, MCP3464, MCP3541, MCP3562, MCP3564
    and their R variants of 16/24bit ADCs. A few minor fixed followed.
rohm,bu1390
  - New driver for this pressure sensor.

Staging graduation
------------------

adi,ad1210 (after 13 or so years :)
  - More or less a complete (step-wise) rewrite of this resolver driver
    to bring it up to date with modern IIO standards.  The fault signal
    handling mapping to event channels was particularly complex and
    significant part of the changes.

Features
--------

iio-core
 - Add chromacity and color temperature channel types.
adi,ad7192
  - Oversampling ratio control (called fast settling in datasheet).
adi,adis16475
  - Add core support and then driver support for delta angle and delta
    velocity channels. These are intended for summation to establish
    angle and velocity changes over larger timescales.  Fix was
    needed for alignment after the temperature channel.  Further fix
    reduced set of devices for which the buffer support was applicable
    as seems burst reads don't cover these on all devices.
hid-sensors-als
  - Chromacity and color temperatures support including in amd sfh.
stx104
  - Add support for counter subsystem to this multipurpose device.
ti,twl6030
  - Add missing device tree binding description.

Clean up and minor fixes.
------------------------

treewide
  - Drop some unused declarations across IIO.
  - Make more use of device_get_match_data() instead of OF specific
    approaches.
Similar cleanup to sets of drivers.
  - Stop platform remove callbacks returning anything by using the
    temporary remove_new() callback.
  - Use i2c_get_match_data() to cope nicely with all types of ID table
    entry.
  - Use device_get_match_data() for various platform device to cope
    with more types of firmware.
  - Convert from enum to pointer in ID tables allowing use of
    i2c_get_match_data().
  - Fix sorting on some ID tables.
  - Include specific string helper headers rather than simply string_helpers.h
docs
  - Better description of the ordering requirements etc for
    available_scan_masks.
tools
  - Handle alignment of mixed sizes where the last element isn't the biggest
    correctly. Seems that doesn't happen often!
adi,ad2s1210
  - Lots of work from David Lechner on this driver including a few fixes
    that are going with the rework to avoid slowing that down.
adi,ad4310
  - Replace deprecated devm_clk_register()
adi,ad74413r
  - Bring the channel function setting inline with the datasheet.
adi,ad7192
  - Change to FIELD_PREP(), FIELD_GET().
  - Calculate f_order from the sinc filter and chop filter states.
  - Move more per chip config into data in struct ad7192_chip_info
  - Cleanup unused parameter in channel macros.
adi,adf4350
  - Make use of devm_* to simplify error handling for many of the setup
    calls in probe() / tear down in remove() and error paths.  Some more
    work to be done on this one.
  - Use dev_err_probe() for errors in probe() callback.
adi,adf4413
  - Typo in function name prefix.
adi,adxl345
  - Add channel scale to the chip type specific structure and drop
    using a type field previously used for indirection.
asahi,ak8985
  - Fix a mismatch introduced when switching from enum->pointers
    in the match tables.
amlogic,meson
  - Expand error logging during probe.
invensense,mpu6050
  - Support level-shifter control. Whilst no one is sure exactly what this
    is doing it is needed for some old boards.
  - Document mount-matrix dt-binding.
mediatek,mt6577
  - Use devm_clk_get_enabled() to replace open coded version and move
    everything over to being device managed. Drop now empty remove()
    callback. Fix follows to put the drvdata back.
  - Use dev_err_probe() for error reporting in probe() callback.
memsic,mxc4005
  - Add of_match_table.
microchip,mcp4725
  - Move various chip specific data from being looked up by chip ID to
    data in the chip type specific structure.
silicon-labs,si7005
  - Add of_match_table and entry in trivial-devices.yaml
st,lsm6dsx
  - Add missing mount-matrix dt binding documentation.
st,spear
  - Use devm_clk_get_enabled() and some other devm calls to move everything
    over to being device managed.  Drop now empty remove() callback.
  - Use dev_err_probe() to better handled deferred probing and tidy up
    error reporting in probe() callback.
st,stm32-adc
  - Add a bit of additional checking in probe() to protect against a NULL
    pointer (no known path to trigger it today).
  - Replace deprecated strncpy()
ti,ads1015
  - Allow for edge triggers.
  - Document interrupt in dt-bindings.

* tag 'iio-for-6.7a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (201 commits)
  iio: Use device_get_match_data()
  iio: adc: MCP3564: fix warn: unsigned '__x' is never less than zero.
  dt-bindings: trivial-devices: add silabs,si7005
  iio: si7005: Add device tree support
  drivers: imu: adis16475.c: Remove scan index from delta channels
  dt-bindings: iio: imu: st,lsm6dsx: add mount-matrix property
  iio: resolver: ad2s1210: remove of_match_ptr()
  iio: resolver: ad2s1210: remove DRV_NAME macro
  iio: resolver: ad2s1210: move out of staging
  staging: iio: resolver: ad2s1210: simplify code with guard(mutex)
  staging: iio: resolver: ad2s1210: clear faults after soft reset
  staging: iio: resolver: ad2s1210: refactor sample toggle
  staging: iio: resolver: ad2s1210: remove fault attribute
  staging: iio: resolver: ad2s1210: add label attribute support
  staging: iio: resolver: ad2s1210: add register/fault support summary
  staging: iio: resolver: ad2s1210: implement fault events
  iio: event: add optional event label support
  staging: iio: resolver: ad2s1210: rename DOS reset min/max attrs
  staging: iio: resolver: ad2s1210: convert DOS mismatch threshold to event attr
  staging: iio: resolver: ad2s1210: convert DOS overrange threshold to event attr
  ...

1 files changed, 177 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/iio/resolver/adi,ad2s1210.yaml b/Documentation/devicetree/bindings/iio/resolver/adi,ad2s1210.yaml
new file mode 100644
index 000000000000..8980b3cd8337
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/resolver/adi,ad2s1210.yaml
@@ -0,0 +1,177 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/resolver/adi,ad2s1210.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD2S1210 Resolver-to-Digital Converter
+
+maintainers:
+  - Michael Hennerich <michael.hennerich@analog.com>
+
+description: |
+  The AD2S1210 is a complete 10-bit to 16-bit resolution tracking
+  resolver-to-digital converter, integrating an on-board programmable
+  sinusoidal oscillator that provides sine wave excitation for
+  resolvers.
+
+  The AD2S1210 allows the user to read the angular position or the
+  angular velocity data directly from the parallel outputs or through
+  the serial interface.
+
+  The mode of operation of the communication channel (parallel or serial) is
+  selected by the A0 and A1 input pins. In normal mode, data is latched by
+  toggling the SAMPLE line and can then be read directly. In configuration mode,
+  data is read or written using a register access scheme (address byte with
+  read/write flag and data byte).
+
+    A1  A0  Result
+     0   0  Normal mode - position output
+     0   1  Normal mode - velocity output
+     1   0  Reserved
+     1   1  Configuration mode
+
+  In normal mode, the resolution of the digital output is selected using
+  the RES0 and RES1 input pins. In configuration mode, the resolution is
+  selected by setting the RES0 and RES1 bits in the control register.
+
+  RES1  RES0  Resolution (Bits)
+     0     0  10
+     0     1  12
+     1     0  14
+     1     1  16
+
+  Note on SPI connections: The CS line on the AD2S1210 should hard-wired to
+  logic low and the WR/FSYNC line on the AD2S1210 should be connected to the
+  SPI CSn output of the SPI controller.
+
+  Datasheet:
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ad2s1210.pdf
+
+properties:
+  compatible:
+    const: adi,ad2s1210
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 25000000
+
+  spi-cpha: true
+
+  avdd-supply:
+    description:
+      A 4.75 to 5.25 V regulator that powers the Analog Supply Voltage (AVDD)
+      pin.
+
+  dvdd-supply:
+    description:
+      A 4.75 to 5.25 V regulator that powers the Digital Supply Voltage (DVDD)
+      pin.
+
+  vdrive-supply:
+    description:
+      A 2.3 to 5.25 V regulator that powers the Logic Power Supply Input
+      (VDrive) pin.
+
+  clocks:
+    maxItems: 1
+    description: External oscillator clock (CLKIN).
+
+  reset-gpios:
+    description:
+      GPIO connected to the /RESET pin. As the line needs to be low for the
+      reset to be active, it should be configured as GPIO_ACTIVE_LOW.
+    maxItems: 1
+
+  sample-gpios:
+    description:
+      GPIO connected to the /SAMPLE pin. As the line needs to be low to trigger
+      a sample, it should be configured as GPIO_ACTIVE_LOW.
+    maxItems: 1
+
+  mode-gpios:
+    description:
+      GPIO lines connected to the A0 and A1 pins. These pins select the data
+      transfer mode.
+    minItems: 2
+    maxItems: 2
+
+  resolution-gpios:
+    description:
+      GPIO lines connected to the RES0 and RES1 pins. These pins select the
+      resolution of the digital output. If omitted, it is assumed that the
+      RES0 and RES1 pins are hard-wired to match the assigned-resolution-bits
+      property.
+    minItems: 2
+    maxItems: 2
+
+  fault-gpios:
+    description:
+      GPIO lines connected to the LOT and DOS pins. These pins combined indicate
+      the type of fault present, if any. As these pins a pulled low to indicate
+      a fault condition, they should be configured as GPIO_ACTIVE_LOW.
+    minItems: 2
+    maxItems: 2
+
+  adi,fixed-mode:
+    description:
+      This is used to indicate the selected mode if A0 and A1 are hard-wired
+      instead of connected to GPIOS (i.e. mode-gpios is omitted).
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [config, velocity, position]
+
+  assigned-resolution-bits:
+    description:
+      Resolution of the digital output required by the application. This
+      determines the precision of the angle and/or the maximum speed that can
+      be measured. If resolution-gpios is omitted, it is assumed that RES0 and
+      RES1 are hard-wired to match this value.
+    enum: [10, 12, 14, 16]
+
+required:
+  - compatible
+  - reg
+  - spi-cpha
+  - avdd-supply
+  - dvdd-supply
+  - vdrive-supply
+  - clocks
+  - sample-gpios
+  - assigned-resolution-bits
+
+oneOf:
+  - required:
+      - mode-gpios
+  - required:
+      - adi,fixed-mode
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        resolver@0 {
+            compatible = "adi,ad2s1210";
+            reg = <0>;
+            spi-max-frequency = <20000000>;
+            spi-cpha;
+            avdd-supply = <&avdd_regulator>;
+            dvdd-supply = <&dvdd_regulator>;
+            vdrive-supply = <&vdrive_regulator>;
+            clocks = <&ext_osc>;
+            sample-gpios = <&gpio0 90 GPIO_ACTIVE_LOW>;
+            mode-gpios = <&gpio0 86 0>, <&gpio0 87 0>;
+            resolution-gpios = <&gpio0 88 0>, <&gpio0 89 0>;
+            assigned-resolution-bits = <16>;
+        };
+    };