Merge tag 'iio-for-5.5c' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Third set of IIO new device support cleanups and fixes for the 5.5 cycle.

New device support
* ad5446
  - Support the ad5600 DAC (id only needed).
* ad7292 ADC DAC etc
  - New driver plus dt-bindings.
* veml6030 ambient light sensor
  - New driver plus dt-bindings and sysfs docs.

Features
* mpu6050
  - Explicit VDD control.
* stm32-adc
  - Allow limiting of max clock frequency from devicetree to ensure it's
    suitable for external circuitry.

yaml binding conversions
* ltc1660
* mcp3911

Fixes
* adis16480
  - Fix wrong scale factors.
  - Fix debugfs reg access by providing the callback.
* cros_ec_baro
  - Fixing missing mask entry to make available sample frequencies visible
    in sysfs.
* st_lsm6dsx
  - Explicitly handle different ODR table sizes.
  - Handle restrictions between slave ODR and accel ODR when
    both are enabled.
  - Allow ODR to be expressed more accurately by using miliHz.
* tools
  - Fix an issue with parallel builds.

Cleanups and warning fixes
* adis16136, adis16400, adis16460, adis-lib
  - Change some checks on return values to be for 0 rather than strictly
    negative. Avoids some fiddly issues with the compiler concluding some
    variables are initialized due to a mixture of error checks.
  - Assign values only on success of 'read' operations - avoiding any
    chance the compiler will falsly suggest they might be used uninitialized.
  - Whitespace and simlar cleanups.
* aspeed adc
  - devm_platfom_ioremap_resource to reduce boilerplate.
* bcm-iproc-adc
  - Stray semicolon removal.
* cc10001
  - devm_platfom_ioremap_resource to reduce boilerplate.
* dln2-adc
  - Reorganise the buffered mode setup and tear down. Part of moving towards
    being able to refactor this area of the IIO core.
* hdc100x
  - Reorganise the buffered mode setup and tear down.
* ingenic-adc
  - devm_platfom_ioremap_resource to reduce boilerplate.
* lpc18xx-adc
  - devm_platfom_ioremap_resource to reduce boilerplate.
* lpc18xx-dac
  - devm_platfom_ioremap_resource to reduce boilerplate.
* mt6577
  - devm_platfom_ioremap_resource to reduce boilerplate.
* npcm
  - devm_platfom_ioremap_resource to reduce boilerplate.
* rcar-gyroadc
  - devm_platfom_ioremap_resource to reduce boilerplate.
* spear-adc
  - devm_platfom_ioremap_resource to reduce boilerplate.
* vf610-adc
  - devm_platfom_ioremap_resource to reduce boilerplate.
* vf610-dac
  - devm_platfom_ioremap_resource to reduce boilerplate.

* tag 'iio-for-5.5c' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (43 commits)
  iio: adis16480: Add debugfs_reg_access entry
  iio: adis16480: Fix scales factors
  tools: iio: Correctly add make dependency for iio_utils
  iio: adc: Add driver support for AD7292
  dt-bindings: iio: adc: Add dt-schema for AD7292
  dt-bindings: iio: adc: Migrate MCP3911 documentation to yaml
  iio: imu: mpu6050: Add support for vdd-supply regulator
  dt-bindings: iio: imu: mpu6050: add vdd-supply
  iio: cros_ec_baro: set info_mask_shared_by_all_available field
  iio: dac: ad5446: Add support for new AD5600 DAC
  dt-bindings: iio: dac: Migrate LTC1660 documentation to yaml
  iio: documentation: light: Add veml6030 sysfs documentation
  dt-bindings: iio: light: add veml6030 ALS bindings
  iio: light: add driver for veml6030 ambient light sensor
  iio: imu: st_lsm6dsx: express odr in mHZ
  iio: imu: st_lsm6dsx: fix ODR check in st_lsm6dsx_write_raw
  iio: imu: st_lsm6dsx: explicitly define odr table size
  iio: adc: stm32: allow to tune analog clock
  dt-bindings: iio: stm32-adc: add max clock rate property
  iio: dac: vf610: Use devm_platform_ioremap_resource
  ...

9 files changed, 300 insertions, 51 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 680451695422..faaa2166d741 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -753,6 +753,8 @@ What:		/sys/.../events/in_illuminance0_thresh_falling_value
 what:		/sys/.../events/in_illuminance0_thresh_rising_value
 what:		/sys/.../events/in_proximity0_thresh_falling_value
 what:		/sys/.../events/in_proximity0_thresh_rising_value
+What:		/sys/.../events/in_illuminance_thresh_rising_value
+What:		/sys/.../events/in_illuminance_thresh_falling_value
 KernelVersion:	2.6.37
 Contact:	linux-iio@vger.kernel.org
 Description:
@@ -972,6 +974,7 @@ What:		/sys/.../events/in_activity_jogging_thresh_rising_period
 What:		/sys/.../events/in_activity_jogging_thresh_falling_period
 What:		/sys/.../events/in_activity_running_thresh_rising_period
 What:		/sys/.../events/in_activity_running_thresh_falling_period
+What:		/sys/.../events/in_illuminance_thresh_either_period
 KernelVersion:	2.6.37
 Contact:	linux-iio@vger.kernel.org
 Description:
@@ -1715,3 +1718,11 @@ Description:
 		Mass concentration reading of particulate matter in ug / m3.
 		pmX consists of particles with aerodynamic diameter less or
 		equal to X micrometers.
+
+What:		/sys/bus/iio/devices/iio:deviceX/events/in_illuminance_period_available
+Date:		November 2019
+KernelVersion:	5.4
+Contact:	linux-iio@vger.kernel.org
+Description:
+		List of valid periods (in seconds) for which the light intensity
+		must be above the threshold level before interrupt is asserted.
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
new file mode 100644
index 000000000000..b68be3aaf587
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad7292.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD7292 10-Bit Monitor and Control System
+
+maintainers:
+  - Marcelo Schmitt <marcelo.schmitt1@gmail.com>
+
+description: |
+  Analog Devices AD7292 10-Bit Monitor and Control System with ADC, DACs,
+  Temperature Sensor, and GPIOs
+
+  Specifications about the part can be found at:
+    https://www.analog.com/media/en/technical-documentation/data-sheets/ad7292.pdf
+
+properties:
+  compatible:
+    enum:
+      - adi,ad7292
+
+  reg:
+    maxItems: 1
+
+  vref-supply:
+    description: |
+      The regulator supply for ADC and DAC reference voltage.
+
+  spi-cpha: true
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - spi-cpha
+
+patternProperties:
+  "^channel@[0-7]$":
+    type: object
+    description: |
+      Represents the external channels which are connected to the ADC.
+      See Documentation/devicetree/bindings/iio/adc/adc.txt.
+
+    properties:
+      reg:
+        description: |
+          The channel number. It can have up to 8 channels numbered from 0 to 7.
+        items:
+          maximum: 7
+
+      diff-channels:
+        description: see Documentation/devicetree/bindings/iio/adc/adc.txt
+        maxItems: 1
+
+    required:
+      - reg
+
+examples:
+  - |
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      ad7292: adc@0 {
+        compatible = "adi,ad7292";
+        reg = <0>;
+        spi-max-frequency = <25000000>;
+        vref-supply = <&adc_vref>;
+        spi-cpha;
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        channel@0 {
+          reg = <0>;
+          diff-channels = <0 1>;
+        };
+        channel@2 {
+          reg = <2>;
+        };
+        channel@3 {
+          reg = <3>;
+        };
+        channel@4 {
+          reg = <4>;
+        };
+        channel@5 {
+          reg = <5>;
+        };
+        channel@6 {
+          reg = <6>;
+        };
+        channel@7 {
+          reg = <7>;
+        };
+      };
+    };
diff --git a/Documentation/devicetree/bindings/iio/adc/mcp3911.txt b/Documentation/devicetree/bindings/iio/adc/mcp3911.txt
deleted file mode 100644
index 3071f48fb30b..000000000000
--- a/Documentation/devicetree/bindings/iio/adc/mcp3911.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-* Microchip MCP3911 Dual channel analog front end (ADC)
-
-Required properties:
- - compatible: Should be "microchip,mcp3911"
- - reg: SPI chip select number for the device
-
-Recommended properties:
- - spi-max-frequency: Definition as per
-	 Documentation/devicetree/bindings/spi/spi-bus.txt.
-	 Max frequency for this chip is 20MHz.
-
-Optional properties:
- - clocks: Phandle and clock identifier for sampling clock
- - interrupt-parent: Phandle to the parent interrupt controller
- - interrupts: IRQ line for the ADC
- - microchip,device-addr: Device address when multiple MCP3911 chips are present on the
-	same SPI bus. Valid values are 0-3. Defaults to 0.
- - vref-supply: Phandle to the external reference voltage supply.
-
-Example:
-adc@0 {
-	compatible = "microchip,mcp3911";
-	reg = <0>;
-	interrupt-parent = <&gpio5>;
-	interrupts = <15 IRQ_TYPE_EDGE_RISING>;
-	spi-max-frequency = <20000000>;
-	microchip,device-addr = <0>;
-	vref-supply = <&vref_reg>;
-	clocks = <&xtal>;
-};
diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml
new file mode 100644
index 000000000000..881059b80d61
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3911.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+# Copyright 2019 Marcus Folkesson <marcus.folkesson@gmail.com>
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/bindings/iio/adc/microchip,mcp3911.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Microchip MCP3911 Dual channel analog front end (ADC)
+
+maintainers:
+  - Marcus Folkesson <marcus.folkesson@gmail.com>
+  - Kent Gustavsson <nedo80@gmail.com>
+
+description: |
+  Bindings for the Microchip MCP3911 Dual channel ADC device. Datasheet can be
+  found here: https://ww1.microchip.com/downloads/en/DeviceDoc/20002286C.pdf
+
+properties:
+  compatible:
+    enum:
+      - microchip,mcp3911
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 20000000
+
+  clocks:
+    description: |
+      Phandle and clock identifier for external sampling clock.
+      If not specified, the internal crystal oscillator will be used.
+    maxItems: 1
+
+  interrupts:
+    description: IRQ line of the ADC
+    maxItems: 1
+
+  microchip,device-addr:
+    description: Device address when multiple MCP3911 chips are present on the same SPI bus.
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [0, 1, 2, 3]
+      - default: 0
+
+  vref-supply:
+    description: |
+      Phandle to the external reference voltage supply.
+      If not specified, the internal voltage reference (1.2V) will be used.
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      adc@0 {
+        compatible = "microchip,mcp3911";
+        reg = <0>;
+        interrupt-parent = <&gpio5>;
+        interrupts = <15 2>;
+        spi-max-frequency = <20000000>;
+        microchip,device-addr = <0>;
+        vref-supply = <&vref_reg>;
+        clocks = <&xtal>;
+      };
+    };
diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
index 4c0da8c74bb2..8de933146771 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
@@ -53,6 +53,8 @@ Optional properties:
   analog input switches on stm32mp1.
 - st,syscfg: Phandle to system configuration controller. It can be used to
   control the analog circuitry on stm32mp1.
+- st,max-clk-rate-hz: Allow to specify desired max clock rate used by analog
+  circuitry.
 
 Contents of a stm32 adc child node:
 -----------------------------------
diff --git a/Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml b/Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml
new file mode 100644
index 000000000000..13d005b68931
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+# Copyright 2019 Marcus Folkesson <marcus.folkesson@gmail.com>
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/bindings/iio/dac/lltc,ltc1660.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Linear Technology Micropower octal 8-Bit and 10-Bit DACs
+
+maintainers:
+  - Marcus Folkesson <marcus.folkesson@gmail.com>
+
+description: |
+  Bindings for the Linear Technology Micropower octal 8-Bit and 10-Bit DAC.
+  Datasheet can be found here: https://www.analog.com/media/en/technical-documentation/data-sheets/166560fa.pdf
+
+properties:
+  compatible:
+    enum:
+      - lltc,ltc1660
+      - lltc,ltc1665
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 5000000
+
+  vref-supply:
+    description: Phandle to the external reference voltage supply.
+
+required:
+  - compatible
+  - reg
+  - vref-supply
+
+examples:
+  - |
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+  
+      dac@0 {
+        compatible = "lltc,ltc1660";
+        reg = <0>;
+        spi-max-frequency = <5000000>;
+        vref-supply = <&vref_reg>;
+      };
+    };
diff --git a/Documentation/devicetree/bindings/iio/dac/ltc1660.txt b/Documentation/devicetree/bindings/iio/dac/ltc1660.txt
deleted file mode 100644
index c5b5f22d6c64..000000000000
--- a/Documentation/devicetree/bindings/iio/dac/ltc1660.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-* Linear Technology Micropower octal 8-Bit and 10-Bit DACs
-
-Required properties:
- - compatible: Must be one of the following:
-		"lltc,ltc1660"
-		"lltc,ltc1665"
- - reg: SPI chip select number for the device
- - vref-supply: Phandle to the voltage reference supply
-
-Recommended properties:
- - spi-max-frequency: Definition as per
-	 Documentation/devicetree/bindings/spi/spi-bus.txt.
-	 Max frequency for this chip is 5 MHz.
-
-Example:
-dac@0 {
-	compatible = "lltc,ltc1660";
-	reg = <0>;
-	spi-max-frequency = <5000000>;
-	vref-supply = <&vref_reg>;
-};
diff --git a/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt b/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
index 268bf7568e19..c5ee8a20af9f 100644
--- a/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
+++ b/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
@@ -21,6 +21,7 @@ Required properties:
   bindings.
 
 Optional properties:
+ - vdd-supply: regulator phandle for VDD supply
  - vddio-supply: regulator phandle for VDDIO supply
  - mount-matrix: an optional 3x3 mounting rotation matrix
  - i2c-gate node.  These devices also support an auxiliary i2c bus.  This is
diff --git a/Documentation/devicetree/bindings/iio/light/veml6030.yaml b/Documentation/devicetree/bindings/iio/light/veml6030.yaml
new file mode 100644
index 000000000000..0ff9b11f9d18
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/light/veml6030.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: GPL-2.0+
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/light/veml6030.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: VEML6030 Ambient Light Sensor (ALS)
+
+maintainers:
+  - Rishi Gupta <gupt21@gmail.com>
+
+description: |
+  Bindings for the ambient light sensor veml6030 from Vishay
+  Semiconductors over an i2c interface.
+
+  Irrespective of whether interrupt is used or not, application
+  can get the ALS and White channel reading from IIO raw interface.
+
+  If the interrupts are used, application will receive an IIO event
+  whenever configured threshold is crossed.
+
+  Specifications about the sensor can be found at:
+    https://www.vishay.com/docs/84366/veml6030.pdf
+
+properties:
+  compatible:
+    enum:
+      - vishay,veml6030
+
+  reg:
+    description:
+      I2C address of the device.
+    enum:
+      - 0x10 # ADDR pin pulled down
+      - 0x48 # ADDR pin pulled up
+
+  interrupts:
+    description:
+      interrupt mapping for IRQ. Configure with IRQ_TYPE_LEVEL_LOW.
+      Refer to interrupt-controller/interrupts.txt for generic
+      interrupt client node bindings.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        light-sensor@10 {
+                compatible = "vishay,veml6030";
+                reg = <0x10>;
+                interrupts = <12 IRQ_TYPE_LEVEL_LOW>;
+        };
+    };
+...