Staging/IIO driver patches for 5.9-rc1

Here is the large set of Staging and IIO driver patches for 5.9-rc1.
 
 Lots of churn here, but overall the size increase in lines added is
 small, while adding a load of new IIO drivers.
 
 Major things in here:
 	- lots and lots of IIO new drivers and frameworks added
 	- IIO driver fixes and updates
 	- lots of tiny coding style cleanups for staging drivers
 	- vc04_services major reworks and cleanups
 
 We had 3 set of drivers move out of staging in this round as well:
 	- wilc1000 wireless driver moved out of staging
 	- speakup moved out of staging
 	- most USB driver moved out of staging
 
 Full details are in the shortlog.
 
 All of these have been in linux-next with no reported issues.  The last
 few changes here were to resolve reported linux-next issues, and they
 seem to have resolved the problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO driver updates from Greg KH:
 "Here is the large set of Staging and IIO driver patches for 5.9-rc1.

  Lots of churn here, but overall the size increase in lines added is
  small, while adding a load of new IIO drivers.

  Major things in here:

   - lots and lots of IIO new drivers and frameworks added

   - IIO driver fixes and updates

   - lots of tiny coding style cleanups for staging drivers

   - vc04_services major reworks and cleanups

  We had 3 set of drivers move out of staging in this round as well:

   - wilc1000 wireless driver moved out of staging

   - speakup moved out of staging

   - most USB driver moved out of staging

  Full details are in the shortlog.

  All of these have been in linux-next with no reported issues. The last
  few changes here were to resolve reported linux-next issues, and they
  seem to have resolved the problems"

* tag 'staging-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (428 commits)
  staging: most: fix up movement of USB driver
  staging: rts5208: clear alignment style issues
  staging: r8188eu: replace rtw_netdev_priv define with inline function
  staging: netlogic: clear alignment style issues
  staging: android: ashmem: Fix lockdep warning for write operation
  drivers: most: add USB adapter driver
  staging: most: Use %pM format specifier for MAC addresses
  staging: ks7010: Use %pM format specifier for MAC addresses
  staging: qlge: qlge_dbg: removed comment repition
  staging: wfx: Use flex_array_size() helper in memcpy()
  staging: rtl8723bs: Align macro definitions
  staging: rtl8723bs: Clean up function declations
  staging: rtl8723bs: Fix coding style errors
  drivers: staging: audio: Fix the missing header file for helper file
  staging: greybus: audio: Enable GB codec, audio module compilation.
  staging: greybus: audio: Add helper APIs for dynamic audio modules
  staging: greybus: audio: Resolve compilation error in topology parser
  staging: greybus: audio: Resolve compilation errors for GB codec module
  staging: greybus: audio: Maintain jack list within GB Audio module
  staging: greybus: audio: Update snd_jack FW usage as per new APIs
  ...

Documentation/ABI/testing/sysfs-bus-iio

@@ -1569,7 +1569,8 @@ What:		/sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
 KernelVersion:	4.3
 Contact:	linux-iio@vger.kernel.org
 Description:
-		Raw (unscaled no offset etc.) percentage reading of a substance.
+		Raw (unscaled no offset etc.) reading of a substance. Units
+		after application of scale and offset are percents.
 
 What:		/sys/bus/iio/devices/iio:deviceX/in_resistance_raw
 What:		/sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw

Documentation/ABI/testing/sysfs-bus-iio-icm42600

@@ -0,0 +1,20 @@
+What:		/sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
+What:		/sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
+What:		/sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
+What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
+What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
+What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
+KernelVersion:  5.8
+Contact:        linux-iio@vger.kernel.org
+Description:
+		Hardware applied calibration offset (assumed to fix production
+		inaccuracies). Values represent a real physical offset expressed
+		in SI units (m/s^2 for accelerometer and rad/s for gyroscope).
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_accel_calibbias_available
+What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_calibbias_available
+KernelVersion:  5.8
+Contact:        linux-iio@vger.kernel.org
+Description:
+		Range of available values for hardware offset. Values in SI
+		units (m/s^2 for accelerometer and rad/s for gyroscope).

Documentation/ABI/testing/sysfs-bus-iio-scd30

@@ -0,0 +1,34 @@
+What:		/sys/bus/iio/devices/iio:deviceX/calibration_auto_enable
+Date:		June 2020
+KernelVersion:	5.8
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Contaminants build-up in the measurement chamber or optical
+		elements deterioration leads to sensor drift.
+
+		One can compensate for sensor drift by using automatic self
+		calibration procedure (asc).
+
+		Writing 1 or 0 to this attribute will respectively activate or
+		deactivate asc.
+
+		Upon reading current asc status is returned.
+
+What:		/sys/bus/iio/devices/iio:deviceX/calibration_forced_value
+Date:		June 2020
+KernelVersion:	5.8
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Contaminants build-up in the measurement chamber or optical
+		elements deterioration leads to sensor drift.
+
+		One can compensate for sensor drift by using forced
+		recalibration (frc). This is useful in case there's known
+		co2 reference available nearby the sensor.
+
+		Picking value from the range [400 1 2000] and writing it to the
+		sensor will set frc.
+
+		Upon reading current frc value is returned. Note that after
+		power cycling default value (i.e 400) is returned even though
+		internally sensor had recalibrated itself.

Documentation/admin-guide/spkguide.txt

@@ -1531,7 +1531,7 @@ The Free Software Foundation may publish new, revised versions
 of the GNU Free Documentation License from time to time.  Such new
 versions will be similar in spirit to the present version, but may
 differ in detail to address new problems or concerns.  See
-http://www.gnu.org/copyleft/.
+https://www.gnu.org/copyleft/.
 
 Each version of the License is given a distinguishing version number.
 If the Document specifies that a particular numbered version of this

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

@@ -12,8 +12,8 @@ maintainers:
 description: |
   Analog Devices ADXL345/ADXL375 3-Axis Digital Accelerometers that supports
   both I2C & SPI interfaces.
-    http://www.analog.com/en/products/mems/accelerometers/adxl345.html
+    https://www.analog.com/en/products/mems/accelerometers/adxl345.html
-    http://www.analog.com/en/products/sensors-mems/accelerometers/adxl375.html
+    https://www.analog.com/en/products/sensors-mems/accelerometers/adxl375.html
 
 properties:
   compatible:

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

@@ -1,22 +0,0 @@
-Kionix KXSD9 Accelerometer device tree bindings
-
-Required properties:
- - compatible: 		should be set to "kionix,kxsd9"
- - reg:			i2c slave address
-
-Optional properties:
- - vdd-supply:		The input supply for VDD
- - iovdd-supply:	The input supply for IOVDD
- - interrupts:		The movement detection interrupt
- - mount-matrix:	See mount-matrix.txt
-
-Example:
-
-kxsd9@18 {
-	compatible = "kionix,kxsd9";
-	reg = <0x18>;
-	interrupt-parent = <&foo>;
-	interrupts = <57 IRQ_TYPE_EDGE_FALLING>;
-	iovdd-supply = <&bar>;
-	vdd-supply = <&baz>;
-};

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

@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/accel/kionix,kxsd9.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kionix KXSD9 Accelerometer
+
+maintainers:
+  - Jonathan Cameron <jic23@kernel.org>
+
+description: |
+  3 axis 12 bit accelerometer with +-8G range on all axes. Also has a
+  12 bit auxiliary ADC channel. Interface is either SPI or I2C.
+
+properties:
+  compatible:
+    const: kionix,kxsd9
+
+  reg:
+    maxItems: 1
+
+  vdd-supply: true
+  iovdd-supply: true
+
+  interrupts:
+    maxItems: 1
+
+  mount-matrix:
+    description: an optional 3x3 mounting rotation matrix.
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    # include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        accel@18 {
+            compatible = "kionix,kxsd9";
+            reg = <0x18>;
+            iovdd-supply = <&iovdd>;
+            vdd-supply = <&vdd>;
+            interrupts = <57 IRQ_TYPE_EDGE_FALLING>;
+            mount-matrix = "-0.984807753012208", "0",  "-0.173648177666930",
+                           "0",                  "-1", "0",
+                           "-0.173648177666930", "0",  "0.984807753012208";
+        };
+    };
+  - |
+    # include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        accel@0 {
+            compatible = "kionix,kxsd9";
+            reg = <0>;
+            spi-max-frequency = <10000000>;
+        };
+    };
+...

Documentation/devicetree/bindings/iio/adc/ingenic,adc.txt

@@ -1,49 +0,0 @@
-* Ingenic JZ47xx ADC controller IIO bindings
-
-Required properties:
-
-- compatible: Should be one of:
-  * ingenic,jz4725b-adc
-  * ingenic,jz4740-adc
-  * ingenic,jz4770-adc
-- reg: ADC controller registers location and length.
-- clocks: phandle to the SoC's ADC clock.
-- clock-names: Must be set to "adc".
-- #io-channel-cells: Must be set to <1> to indicate channels are selected
-  by index.
-
-ADC clients must use the format described in iio-bindings.txt, giving
-a phandle and IIO specifier pair ("io-channels") to the ADC controller.
-
-Example:
-
-#include <dt-bindings/iio/adc/ingenic,adc.h>
-
-adc: adc@10070000 {
-	compatible = "ingenic,jz4740-adc";
-	#io-channel-cells = <1>;
-
-	reg = <0x10070000 0x30>;
-
-	clocks = <&cgu JZ4740_CLK_ADC>;
-	clock-names = "adc";
-
-	interrupt-parent = <&intc>;
-	interrupts = <18>;
-};
-
-adc-keys {
-	...
-	compatible = "adc-keys";
-	io-channels = <&adc INGENIC_ADC_AUX>;
-	io-channel-names = "buttons";
-	...
-};
-
-battery {
-	...
-	compatible = "ingenic,jz4740-battery";
-	io-channels = <&adc INGENIC_ADC_BATTERY>;
-	io-channel-names = "battery";
-	...
-};

Documentation/devicetree/bindings/iio/adc/ingenic,adc.yaml

@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019-2020 Artur Rojek
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/iio/adc/ingenic,adc.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Ingenic JZ47xx ADC controller IIO bindings
+
+maintainers:
+  - Artur Rojek <contact@artur-rojek.eu>
+
+description: >
+  Industrial I/O subsystem bindings for ADC controller found in
+  Ingenic JZ47xx SoCs.
+
+  ADC clients must use the format described in iio-bindings.txt, giving
+  a phandle and IIO specifier pair ("io-channels") to the ADC controller.
+
+properties:
+  compatible:
+    enum:
+      - ingenic,jz4725b-adc
+      - ingenic,jz4740-adc
+      - ingenic,jz4770-adc
+
+  '#io-channel-cells':
+    const: 1
+    description:
+      Must be set to <1> to indicate channels are selected by index.
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: adc
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - '#io-channel-cells'
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/jz4740-cgu.h>
+    #include <dt-bindings/iio/adc/ingenic,adc.h>
+
+    adc@10070000 {
+            compatible = "ingenic,jz4740-adc";
+            #io-channel-cells = <1>;
+
+            reg = <0x10070000 0x30>;
+
+            clocks = <&cgu JZ4740_CLK_ADC>;
+            clock-names = "adc";
+
+            interrupt-parent = <&intc>;
+            interrupts = <18>;
+    };

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

@@ -1,173 +0,0 @@
-Qualcomm's SPMI PMIC ADC
-
-- SPMI PMIC voltage ADC (VADC) provides interface to clients to read
-  voltage. The VADC is a 15-bit sigma-delta ADC.
-- SPMI PMIC5 voltage ADC (ADC) provides interface to clients to read
-  voltage. The VADC is a 16-bit sigma-delta ADC.
-
-VADC node:
-
-- compatible:
-    Usage: required
-    Value type: <string>
-    Definition: Should contain "qcom,spmi-vadc".
-                Should contain "qcom,spmi-adc5" for PMIC5 ADC driver.
-                Should contain "qcom,spmi-adc-rev2" for PMIC rev2 ADC driver.
-                Should contain "qcom,pms405-adc" for PMS405 PMIC
-
-- reg:
-    Usage: required
-    Value type: <prop-encoded-array>
-    Definition: VADC base address in the SPMI PMIC register map.
-
-- #address-cells:
-    Usage: required
-    Value type: <u32>
-    Definition: Must be one. Child node 'reg' property should define ADC
-            channel number.
-
-- #size-cells:
-    Usage: required
-    Value type: <u32>
-    Definition: Must be zero.
-
-- #io-channel-cells:
-    Usage: required
-    Value type: <u32>
-    Definition: Must be one. For details about IIO bindings see:
-            Documentation/devicetree/bindings/iio/iio-bindings.txt
-
-- interrupts:
-    Usage: optional
-    Value type: <prop-encoded-array>
-    Definition: End of conversion interrupt.
-
-Channel node properties:
-
-- reg:
-    Usage: required
-    Value type: <u32>
-    Definition: ADC channel number.
-            See include/dt-bindings/iio/qcom,spmi-vadc.h
-
-- label:
-    Usage: required for "qcom,spmi-adc5" and "qcom,spmi-adc-rev2"
-    Value type: <empty>
-    Definition: ADC input of the platform as seen in the schematics.
-            For thermistor inputs connected to generic AMUX or GPIO inputs
-            these can vary across platform for the same pins. Hence select
-            the platform schematics name for this channel.
-
-- qcom,decimation:
-    Usage: optional
-    Value type: <u32>
-    Definition: This parameter is used to decrease ADC sampling rate.
-            Quicker measurements can be made by reducing decimation ratio.
-            - For compatible property "qcom,spmi-vadc", valid values are
-              512, 1024, 2048, 4096. If property is not found, default value
-              of 512 will be used.
-            - For compatible property "qcom,spmi-adc5", valid values are 250, 420
-              and 840. If property is not found, default value of 840 is used.
-            - For compatible property "qcom,spmi-adc-rev2", valid values are 256,
-              512 and 1024. If property is not present, default value is 1024.
-
-- qcom,pre-scaling:
-    Usage: optional
-    Value type: <u32 array>
-    Definition: Used for scaling the channel input signal before the signal is
-            fed to VADC. The configuration for this node is to know the
-            pre-determined ratio and use it for post scaling. Select one from
-            the following options.
-            <1 1>, <1 3>, <1 4>, <1 6>, <1 20>, <1 8>, <10 81>, <1 10>
-            If property is not found default value depending on chip will be used.
-
-- qcom,ratiometric:
-    Usage: optional
-    Value type: <empty>
-    Definition: Channel calibration type.
-            - For compatible property "qcom,spmi-vadc", if this property is
-              specified VADC will use the VDD reference (1.8V) and GND for
-              channel calibration. If property is not found, channel will be
-              calibrated with 0.625V and 1.25V reference channels, also
-              known as absolute calibration.
-            - For compatible property "qcom,spmi-adc5" and "qcom,spmi-adc-rev2",
-              if this property is specified VADC will use the VDD reference
-              (1.875V) and GND for channel calibration. If property is not found,
-              channel will be calibrated with 0V and 1.25V reference channels,
-              also known as absolute calibration.
-
-- qcom,hw-settle-time:
-    Usage: optional
-    Value type: <u32>
-    Definition: Time between AMUX getting configured and the ADC starting
-            conversion. The 'hw_settle_time' is an index used from valid values
-            and programmed in hardware to achieve the hardware settling delay.
-            - For compatible property "qcom,spmi-vadc" and "qcom,spmi-adc-rev2",
-              Delay = 100us * (hw_settle_time) for hw_settle_time < 11,
-              and 2ms * (hw_settle_time - 10) otherwise.
-              Valid values are: 0, 100, 200, 300, 400, 500, 600, 700, 800,
-              900 us and 1, 2, 4, 6, 8, 10 ms.
-              If property is not found, channel will use 0us.
-            - For compatible property "qcom,spmi-adc5", delay = 15us for
-              value 0, 100us * (value) for values < 11,
-              and 2ms * (value - 10) otherwise.
-              Valid values are: 15, 100, 200, 300, 400, 500, 600, 700, 800,
-              900 us and 1, 2, 4, 6, 8, 10 ms
-              Certain controller digital versions have valid values of
-              15, 100, 200, 300, 400, 500, 600, 700, 1, 2, 4, 8, 16, 32, 64, 128 ms
-              If property is not found, channel will use 15us.
-
-- qcom,avg-samples:
-    Usage: optional
-    Value type: <u32>
-    Definition: Number of samples to be used for measurement.
-            Averaging provides the option to obtain a single measurement
-            from the ADC that is an average of multiple samples. The value
-            selected is 2^(value).
-            - For compatible property "qcom,spmi-vadc", valid values
-              are: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512
-              If property is not found, 1 sample will be used.
-            - For compatible property "qcom,spmi-adc5" and "qcom,spmi-adc-rev2",
-              valid values are: 1, 2, 4, 8, 16
-              If property is not found, 1 sample will be used.
-
-NOTE:
-
-For compatible property "qcom,spmi-vadc" following channels, also known as
-reference point channels, are used for result calibration and their channel
-configuration nodes should be defined:
-VADC_REF_625MV and/or VADC_SPARE1(based on PMIC version) VADC_REF_1250MV,
-VADC_GND_REF and VADC_VDD_VADC.
-
-Example:
-
-#include <dt-bindings/iio/qcom,spmi-vadc.h>
-#include <linux/irq.h>
-/* ... */
-
-	/* VADC node */
-	pmic_vadc: vadc@3100 {
-		compatible = "qcom,spmi-vadc";
-		reg = <0x3100>;
-		interrupts = <0x0 0x31 0x0 IRQ_TYPE_EDGE_RISING>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-		#io-channel-cells = <1>;
-		io-channel-ranges;
-
-		/* Channel node */
-		adc-chan@VADC_LR_MUX10_USB_ID {
-			reg = <VADC_LR_MUX10_USB_ID>;
-			qcom,decimation = <512>;
-			qcom,ratiometric;
-			qcom,hw-settle-time = <200>;
-			qcom,avg-samples = <1>;
-			qcom,pre-scaling = <1 3>;
-		};
-	};
-
-	/* IIO client node */
-	usb {
-		io-channels = <&pmic_vadc VADC_LR_MUX10_USB_ID>;
-		io-channel-names = "vadc";
-	};

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

@@ -0,0 +1,278 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/qcom,spmi-vadc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm's SPMI PMIC ADC
+
+maintainers:
+  - Andy Gross <agross@kernel.org>
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description: |
+  SPMI PMIC voltage ADC (VADC) provides interface to clients to read
+  voltage. The VADC is a 15-bit sigma-delta ADC.
+  SPMI PMIC5/PMIC7 voltage ADC (ADC) provides interface to clients to read
+  voltage. The VADC is a 16-bit sigma-delta ADC.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: qcom,pms405-adc
+          - const: qcom,spmi-adc-rev2
+
+      - items:
+        - enum:
+          - qcom,spmi-vadc
+          - qcom,spmi-adc5
+          - qcom,spmi-adc-rev2
+          - qcom,spmi-adc7
+
+  reg:
+    description: VADC base address in the SPMI PMIC register map
+    maxItems: 1
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  '#io-channel-cells':
+    const: 1
+
+  interrupts:
+    maxItems: 1
+    description:
+      End of conversion interrupt.
+
+required:
+  - compatible
+  - reg
+  - '#address-cells'
+  - '#size-cells'
+  - '#io-channel-cells'
+
+patternProperties:
+  "^.*@[0-9a-f]+$":
+    type: object
+    description: |
+      Represents the external channels which are connected to the ADC.
+      For compatible property "qcom,spmi-vadc" following channels, also known as
+      reference point channels, are used for result calibration and their channel
+      configuration nodes should be defined:
+      VADC_REF_625MV and/or VADC_SPARE1(based on PMIC version) VADC_REF_1250MV,
+      VADC_GND_REF and VADC_VDD_VADC.
+
+    properties:
+      reg:
+        description: |
+          ADC channel number.
+          See include/dt-bindings/iio/qcom,spmi-vadc.h
+          For PMIC7 ADC, the channel numbers are specified separately per PMIC
+          in the PMIC-specific files in include/dt-bindings/iio/.
+
+      label:
+        $ref: /schemas/types.yaml#/definitions/string
+        description: |
+            ADC input of the platform as seen in the schematics.
+            For thermistor inputs connected to generic AMUX or GPIO inputs
+            these can vary across platform for the same pins. Hence select
+            the platform schematics name for this channel.
+
+      qcom,decimation:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: |
+            This parameter is used to decrease ADC sampling rate.
+            Quicker measurements can be made by reducing decimation ratio.
+
+      qcom,pre-scaling:
+        description: |
+            Used for scaling the channel input signal before the signal is
+            fed to VADC. The configuration for this node is to know the
+            pre-determined ratio and use it for post scaling. It is a pair of
+            integers, denoting the numerator and denominator of the fraction by which
+            input signal is multiplied. For example, <1 3> indicates the signal is scaled
+            down to 1/3 of its value before ADC measurement.
+            If property is not found default value depending on chip will be used.
+        allOf:
+          - $ref: /schemas/types.yaml#/definitions/uint32-array
+        oneOf:
+          - items:
+            - const: 1
+            - enum: [ 1, 3, 4, 6, 20, 8, 10 ]
+
+          - items:
+            - const: 10
+            - const: 81
+
+      qcom,ratiometric:
+        description: |
+            Channel calibration type.
+            - For compatible property "qcom,spmi-vadc", if this property is
+              specified VADC will use the VDD reference (1.8V) and GND for
+              channel calibration. If property is not found, channel will be
+              calibrated with 0.625V and 1.25V reference channels, also
+              known as absolute calibration.
+            - For compatible property "qcom,spmi-adc5", "qcom,spmi-adc7" and
+              "qcom,spmi-adc-rev2", if this property is specified VADC will use
+              the VDD reference (1.875V) and GND for channel calibration. If
+              property is not found, channel will be calibrated with 0V and 1.25V
+              reference channels, also known as absolute calibration.
+        type: boolean
+
+      qcom,hw-settle-time:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: |
+            Time between AMUX getting configured and the ADC starting
+            conversion. The 'hw_settle_time' is an index used from valid values
+            and programmed in hardware to achieve the hardware settling delay.
+
+      qcom,avg-samples:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: |
+            Number of samples to be used for measurement.
+            Averaging provides the option to obtain a single measurement
+            from the ADC that is an average of multiple samples. The value
+            selected is 2^(value).
+
+    required:
+      - reg
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,spmi-vadc
+
+    then:
+      patternProperties:
+        "^.*@[0-9a-f]+$":
+          properties:
+            qcom,decimation:
+              enum: [ 512, 1024, 2048, 4096 ]
+              default: 512
+
+            qcom,hw-settle-time:
+              enum: [ 0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1, 2,
+                      4, 6, 8, 10 ]
+              default: 0
+
+            qcom,avg-samples:
+              enum: [ 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 ]
+              default: 1
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,spmi-adc-rev2
+
+    then:
+      patternProperties:
+        "^.*@[0-9a-f]+$":
+          properties:
+            qcom,decimation:
+              enum: [ 256, 512, 1024 ]
+              default: 1024
+
+            qcom,hw-settle-time:
+              enum: [ 0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1, 2,
+                      4, 6, 8, 10 ]
+              default: 0
+
+            qcom,avg-samples:
+              enum: [ 1, 2, 4, 8, 16 ]
+              default: 1
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,spmi-adc5
+
+    then:
+      patternProperties:
+        "^.*@[0-9a-f]+$":
+          properties:
+            qcom,decimation:
+              enum: [ 250, 420, 840 ]
+              default: 840
+
+            qcom,hw-settle-time:
+              enum: [ 15, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1, 2,
+                      4, 6, 8, 10, 16, 32, 64, 128 ]
+              default: 15
+
+            qcom,avg-samples:
+              enum: [ 1, 2, 4, 8, 16 ]
+              default: 1
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,spmi-adc7
+
+    then:
+      patternProperties:
+        "^.*@[0-9a-f]+$":
+          properties:
+            qcom,decimation:
+              enum: [ 85, 340, 1360 ]
+              default: 1360
+
+            qcom,hw-settle-time:
+              enum: [ 15, 100, 200, 300, 400, 500, 600, 700, 1000, 2000, 4000,
+                      8000, 16000, 32000, 64000, 128000 ]
+              default: 15
+
+            qcom,avg-samples:
+              enum: [ 1, 2, 4, 8, 16 ]
+              default: 1
+
+examples:
+  - |
+    spmi_bus {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      /* VADC node */
+      pmic_vadc: adc@3100 {
+        compatible = "qcom,spmi-vadc";
+        reg = <0x3100>;
+        interrupts = <0x0 0x31 0x0 0x1>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        #io-channel-cells = <1>;
+        io-channel-ranges;
+
+        /* Channel node */
+        adc-chan@39 {
+          reg = <0x39>;
+          qcom,decimation = <512>;
+          qcom,ratiometric;
+          qcom,hw-settle-time = <200>;
+          qcom,avg-samples = <1>;
+          qcom,pre-scaling = <1 3>;
+        };
+
+        adc-chan@9 {
+          reg = <0x9>;
+        };
+
+        adc-chan@a {
+          reg = <0xa>;
+        };
+
+        adc-chan@e {
+          reg = <0xe>;
+        };
+
+        adc-chan@f {
+          reg = <0xf>;
+        };
+      };
+    };

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

@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,ads8688.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments' ADS8684 and ADS8688 ADC chip
+
+maintainers:
+  - Sean Nyekjaer <sean@geanix.com>
+
+description: |
+   SPI 16bit ADCs with 4/8 channels.
+
+properties:
+  compatible:
+    enum:
+      - ti,ads8684
+      - ti,ads8688
+
+  reg:
+    maxItems: 1
+
+  vref-supply:
+    description: Optional external reference.  If not supplied, assume
+      REFSEL input tied low to enable the internal reference.
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@0 {
+            compatible = "ti,ads8688";
+            reg = <0>;
+            vref-supply = <&vdd_supply>;
+            spi-max-frequency = <1000000>;
+        };
+    };
+...

Documentation/devicetree/bindings/iio/adc/ti-ads8688.txt

@@ -1,20 +0,0 @@
-* Texas Instruments' ADS8684 and ADS8688 ADC chip
-
-Required properties:
- - compatible: Should be "ti,ads8684" or "ti,ads8688"
- - reg: spi chip select number for the device
-
-Recommended properties:
- - spi-max-frequency: Definition as per
-		Documentation/devicetree/bindings/spi/spi-bus.txt
-
-Optional properties:
- - vref-supply: The regulator supply for ADC reference voltage
-
-Example:
-adc@0 {
-	compatible = "ti,ads8688";
-	reg = <0>;
-	vref-supply = <&vdd_supply>;
-	spi-max-frequency = <1000000>;
-};

Documentation/devicetree/bindings/iio/chemical/sensirion,scd30.yaml

@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/chemical/sensirion,scd30.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sensirion SCD30 carbon dioxide sensor
+
+maintainers:
+  - Tomasz Duszynski <tomasz.duszynski@octakon.com>
+
+description: |
+  Air quality sensor capable of measuring co2 concentration, temperature
+  and relative humidity.
+
+properties:
+  compatible:
+    enum:
+      - sensirion,scd30
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vdd-supply: true
+
+  sensirion,sel-gpios:
+    description: GPIO connected to the SEL line
+    maxItems: 1
+
+  sensirion,pwm-gpios:
+    description: GPIO connected to the PWM line
+    maxItems: 1
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    # include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      co2-sensor@61 {
+        compatible = "sensirion,scd30";
+        reg = <0x61>;
+        vdd-supply = <&vdd>;
+        interrupt-parent = <&gpio0>;
+        interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+      };
+    };
+  - |
+    # include <dt-bindings/interrupt-controller/irq.h>
+    serial {
+      co2-sensor {
+        compatible = "sensirion,scd30";
+        vdd-supply = <&vdd>;
+        interrupt-parent = <&gpio0>;
+        interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+      };
+    };
+
+...

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

@@ -6,7 +6,7 @@ Is is programmable through an SPI interface.
 
 The internal DACs are loaded when the LOADDACS pin is pulled down.
 
-http://www.ti.com/lit/ds/sbas106/sbas106.pdf
+https://www.ti.com/lit/ds/sbas106/sbas106.pdf
 
 Required Properties:
 - compatible: Should be one of:

Documentation/devicetree/bindings/iio/iio-bindings.txt

@@ -9,7 +9,7 @@ specifier is an array of one or more cells identifying the IIO
 output on a device. The length of an IIO specifier is defined by the
 value of a #io-channel-cells property in the IIO provider node.
 
-[1] http://marc.info/?l=linux-iio&m=135902119507483&w=2
+[1] https://marc.info/?l=linux-iio&m=135902119507483&w=2
 
 ==IIO providers==
 

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

@@ -37,6 +37,15 @@ properties:
       set if the specified interrupt pin should be configured as
       open drain. If not set, defaults to push-pull.
 
+  vdd-supply:
+    description: provide VDD power to the sensor.
+
+  vddio-supply:
+    description: provide VDD IO power to the sensor.
+
+  mount-matrix:
+    description: an optional 3x3 mounting rotation matrix
+
 required:
   - compatible
   - reg
@@ -52,9 +61,14 @@ examples:
         bmi160@68 {
                 compatible = "bosch,bmi160";
                 reg = <0x68>;
+                vdd-supply = <&pm8916_l17>;
+                vddio-supply = <&pm8916_l6>;
                 interrupt-parent = <&gpio4>;
                 interrupts = <12 IRQ_TYPE_EDGE_RISING>;
                 interrupt-names = "INT1";
+                mount-matrix = "0", "1", "0",
+                               "-1", "0", "0",
+                               "0", "0", "1";
         };
     };
   - |

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

@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/imu/invensense,icm42600.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: InvenSense ICM-426xx Inertial Measurement Unit
+
+maintainers:
+  - Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
+
+description: |
+  6-axis MotionTracking device that combines a 3-axis gyroscope and a 3-axis
+  accelerometer.
+
+  It has a configurable host interface that supports I3C, I2C and SPI serial
+  communication, features a 2kB FIFO and 2 programmable interrupts with
+  ultra-low-power wake-on-motion support to minimize system power consumption.
+
+  Other industry-leading features include InvenSense on-chip APEX Motion
+  Processing engine for gesture recognition, activity classification, and
+  pedometer, along with programmable digital filters, and an embedded
+  temperature sensor.
+
+  https://invensense.tdk.com/wp-content/uploads/2020/03/DS-000292-ICM-42605-v1.4.pdf
+
+properties:
+  compatible:
+    enum:
+      - invensense,icm42600
+      - invensense,icm42602
+      - invensense,icm42605
+      - invensense,icm42622
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  drive-open-drain:
+    type: boolean
+
+  vdd-supply:
+    description: Regulator that provides power to the sensor
+
+  vddio-supply:
+    description: Regulator that provides power to the bus
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        icm42605@68 {
+          compatible = "invensense,icm42605";
+          reg = <0x68>;
+          interrupt-parent = <&gpio2>;
+          interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+          vdd-supply = <&vdd>;
+          vddio-supply = <&vddio>;
+        };
+    };
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        icm42602@0 {
+          compatible = "invensense,icm42602";
+          reg = <0>;
+          spi-max-frequency = <24000000>;
+          spi-cpha;
+          spi-cpol;
+          interrupt-parent = <&gpio1>;
+          interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
+          vdd-supply = <&vdd>;
+          vddio-supply = <&vddio>;
+        };
+    };

Documentation/devicetree/bindings/iio/light/apds9300.txt

@@ -1,6 +1,6 @@
 * Avago APDS9300 ambient light sensor
 
-http://www.avagotech.com/docs/AV02-1077EN
+https://www.avagotech.com/docs/AV02-1077EN
 
 Required properties:
 

Documentation/devicetree/bindings/iio/light/apds9960.txt

@@ -1,6 +1,6 @@
 * Avago APDS9960 gesture/RGB/ALS/proximity sensor
 
-http://www.avagotech.com/docs/AV02-4191EN
+https://www.avagotech.com/docs/AV02-4191EN
 
 Required properties:
 

Documentation/devicetree/bindings/iio/light/opt3001.txt

@@ -6,7 +6,7 @@ the optional generation of IIO events on rising/falling light threshold changes
 requires the use of interrupts. Without interrupts, only the simple reading
 of the current light value is supported through the IIO API.
 
-http://www.ti.com/product/opt3001
+https://www.ti.com/product/opt3001
 
 Required properties:
   - compatible: should be "ti,opt3001"

Documentation/devicetree/bindings/iio/light/vl6180.txt

@@ -1,6 +1,6 @@
 STMicro VL6180 -  ALS, range and proximity sensor
 
-Link to datasheet: http://www.st.com/resource/en/datasheet/vl6180x.pdf
+Link to datasheet: https://www.st.com/resource/en/datasheet/vl6180x.pdf
 
 Required properties:
 

Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt

@@ -1,30 +0,0 @@
-* AsahiKASEI AK8975 magnetometer sensor
-
-Required properties:
-
-  - compatible : should be "asahi-kasei,ak8975"
-  - reg : the I2C address of the magnetometer
-
-Optional properties:
-
-  - gpios : should be device tree identifier of the magnetometer DRDY pin
-  - vdd-supply: an optional regulator that needs to be on to provide VDD
-  - mount-matrix: an optional 3x3 mounting rotation matrix
-
-Example:
-
-ak8975@c {
-        compatible = "asahi-kasei,ak8975";
-        reg = <0x0c>;
-        gpios = <&gpj0 7 0>;
-        vdd-supply = <&ldo_3v3_gnss>;
-        mount-matrix = "-0.984807753012208",  /* x0 */
-                       "0",                   /* y0 */
-                       "-0.173648177666930",  /* z0 */
-                       "0",                   /* x1 */
-                       "-1",                  /* y1 */
-                       "0",                   /* z1 */
-                       "-0.173648177666930",  /* x2 */
-                       "0",                   /* y2 */
-                       "0.984807753012208";   /* z2 */
-};

Documentation/devicetree/bindings/iio/magnetometer/asahi-kasei,ak8975.yaml

@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/magnetometer/asahi-kasei,ak8975.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AsahiKASEI AK8975 magnetometer sensor
+
+maintainers:
+  - Jonathan Albrieux <jonathan.albrieux@gmail.com>
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+        - asahi-kasei,ak8975
+        - asahi-kasei,ak8963
+        - asahi-kasei,ak09911
+        - asahi-kasei,ak09912
+      - enum:
+        - ak8975
+        - ak8963
+        - ak09911
+        - ak09912
+        deprecated: true
+
+  reg:
+    maxItems: 1
+
+  gpios:
+    maxItems: 1
+    description: |
+      AK8975 has a "Data ready" pin (DRDY) which informs that data
+      is ready to be read and is possible to listen on it. If used,
+      this should be active high. Prefer interrupt over this.
+
+  interrupts:
+    maxItems: 1
+    description: interrupt for DRDY pin. Triggered on rising edge.
+
+  vdd-supply:
+    description: |
+      an optional regulator that needs to be on to provide VDD power to
+      the sensor.
+
+  mount-matrix:
+    description: an optional 3x3 mounting rotation matrix.
+
+  reset-gpios:
+    description: |
+      an optional pin needed for AK09911 to set the reset state. This should
+      be usually active low
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        magnetometer@c {
+            compatible = "asahi-kasei,ak8975";
+            reg = <0x0c>;
+            interrupt-parent = <&gpio6>;
+            interrupts = <15 IRQ_TYPE_EDGE_RISING>;
+            vdd-supply = <&ldo_3v3_gnss>;
+            reset-gpios = <&msmgpio 111 GPIO_ACTIVE_LOW>;
+            mount-matrix = "-0.984807753012208",  /* x0 */
+                           "0",                   /* y0 */
+                           "-0.173648177666930",  /* z0 */
+                           "0",                   /* x1 */
+                           "-1",                  /* y1 */
+                           "0",                   /* z1 */
+                           "-0.173648177666930",  /* x2 */
+                           "0",                   /* y2 */
+                           "0.984807753012208";   /* z2 */
+        };
+    };

Documentation/devicetree/bindings/iio/magnetometer/bmc150_magn.txt

@@ -4,7 +4,11 @@ http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS00
 
 Required properties:
 
-  - compatible : should be "bosch,bmc150_magn"
+  - compatible : should be one of:
+                 "bosch,bmc150_magn"
+                 "bosch,bmc156_magn"
+                 "bosch,bmm150"
+                 "bosch,bmm150_magn" (DEPRECATED, use bosch,bmm150)
   - reg : the I2C address of the magnetometer
 
 Optional properties:

Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt

@@ -1,7 +1,7 @@
 * Microchip MCP41010/41050/41100/42010/42050/42100 Digital Potentiometer
 
 Datasheet publicly available at:
-http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf
+https://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf
 
 The node for this driver must be a child node of a SPI controller, hence
 all mandatory properties described in

Documentation/devicetree/bindings/iio/potentiostat/lmp91000.txt

@@ -1,7 +1,7 @@
 * Texas Instruments LMP91000 series of potentiostats
 
-LMP91000: http://www.ti.com/lit/ds/symlink/lmp91000.pdf
+LMP91000: https://www.ti.com/lit/ds/symlink/lmp91000.pdf
-LMP91002: http://www.ti.com/lit/ds/symlink/lmp91002.pdf
+LMP91002: https://www.ti.com/lit/ds/symlink/lmp91002.pdf
 
 Required properties:
 

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

@@ -13,7 +13,7 @@ description: |
   Bindings for the All Sensors DLH series pressure sensors.
 
   Specifications about the sensors can be found at:
-    http://www.allsensors.com/cad/DS-0355_Rev_B.PDF
+    https://www.allsensors.com/cad/DS-0355_Rev_B.PDF
 
 properties:
   compatible:

Documentation/devicetree/bindings/iio/proximity/devantech-srf04.yaml

@@ -17,9 +17,9 @@ description: |
     until it is received once again
 
   Specifications about the devices can be found at:
-  http://www.robot-electronics.co.uk/htm/srf04tech.htm
+  https://www.robot-electronics.co.uk/htm/srf04tech.htm
 
-  http://www.maxbotix.com/documents/LV-MaxSonar-EZ_Datasheet.pdf
+  https://www.maxbotix.com/documents/LV-MaxSonar-EZ_Datasheet.pdf
 
 properties:
   compatible:

Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml

@@ -52,14 +52,20 @@ properties:
 
 patternProperties:
   "^timer@[0-2]$":
-    description: The timer block channels that are used as timers.
+    description: The timer block channels that are used as timers or counters.
     type: object
     properties:
       compatible:
-        const: atmel,tcb-timer
+        items:
+          - enum:
+              - atmel,tcb-timer
+              - microchip,tcb-capture
       reg:
         description:
-          List of channels to use for this particular timer.
+          List of channels to use for this particular timer. In Microchip TCB capture
+          mode channels are registered as a counter devices, for the qdec mode TCB0's
+          channel <0> and <1> are required.
+
         minItems: 1
         maxItems: 3
 
@@ -153,3 +159,23 @@ examples:
                         reg = <1>;
                 };
         };
+    /* TCB0 Capture with QDEC: */
+        timer@f800c000 {
+                compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <0xfff7c000 0x100>;
+                interrupts = <18 4>;
+                clocks = <&tcb0_clk>, <&clk32k>;
+                clock-names = "t0_clk", "slow_clk";
+
+                timer@0 {
+                        compatible = "microchip,tcb-capture";
+                        reg = <0>, <1>;
+                };
+
+                timer@2 {
+                        compatible = "atmel,tcb-timer";
+                        reg = <2>;
+                };
+        };

Documentation/driver-api/generic-counter.rst

@@ -262,7 +262,7 @@ the system.
 Counter Counts may be allocated via counter_count structures, and
 respective Counter Signal associations (Synapses) made via
 counter_synapse structures. Associated counter_synapse structures are
-stored as an array and set to the the synapses array member of the
+stored as an array and set to the synapses array member of the
 respective counter_count structure. These counter_count structures are
 set to the counts array member of an allocated counter_device structure
 before the Counter is registered to the system.

Documentation/driver-api/iio/buffers.rst

@@ -88,7 +88,7 @@ fields in iio_chan_spec definition::
 The driver implementing the accelerometer described above will have the
 following channel definition::
 
-   struct struct iio_chan_spec accel_channels[] = {
+   struct iio_chan_spec accel_channels[] = {
            {
                    .type = IIO_ACCEL,
 		   .modified = 1,

MAINTAINERS

@@ -9036,6 +9036,14 @@ F:	include/dt-bindings/interconnect/
 F:	include/linux/interconnect-provider.h
 F:	include/linux/interconnect.h
 
+INVENSENSE ICM-426xx IMU DRIVER
+M:	Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
+L:	linux-iio@vger.kernel.org
+S:	Maintained
+W	https://invensense.tdk.com/
+F:	Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
+F:	drivers/iio/imu/inv_icm42600/
+
 INVENSENSE MPU-3050 GYROSCOPE DRIVER
 M:	Linus Walleij <linus.walleij@linaro.org>
 L:	linux-iio@vger.kernel.org
@@ -11411,7 +11419,6 @@ F:	Documentation/devicetree/bindings/pwm/atmel-pwm.txt
 F:	drivers/pwm/pwm-atmel.c
 
 MICROCHIP SAMA5D2-COMPATIBLE ADC DRIVER
-M:	Ludovic Desroches <ludovic.desroches@microchip.com>
 M:	Eugen Hristev <eugen.hristev@microchip.com>
 L:	linux-iio@vger.kernel.org
 S:	Supported
@@ -15472,6 +15479,15 @@ S:	Maintained
 F:	drivers/misc/phantom.c
 F:	include/uapi/linux/phantom.h
 
+SENSIRION SCD30 CARBON DIOXIDE SENSOR DRIVER
+M:	Tomasz Duszynski <tomasz.duszynski@octakon.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/iio/chemical/sensirion,scd30.yaml
+F:	drivers/iio/chemical/scd30.h
+F:	drivers/iio/chemical/scd30_core.c
+F:	drivers/iio/chemical/scd30_i2c.c
+F:	drivers/iio/chemical/scd30_serial.c
+
 SENSIRION SPS30 AIR POLLUTION SENSOR DRIVER
 M:	Tomasz Duszynski <tduszyns@gmail.com>
 S:	Maintained
@@ -16171,6 +16187,16 @@ Q:	https://patchwork.kernel.org/project/linux-sparse/list/
 B:	https://bugzilla.kernel.org/enter_bug.cgi?component=Sparse&product=Tools
 F:	include/linux/compiler.h
 
+SPEAKUP CONSOLE SPEECH DRIVER
+M:	William Hubbs <w.d.hubbs@gmail.com>
+M:	Chris Brannon <chris@the-brannons.com>
+M:	Kirk Reiser <kirk@reisers.ca>
+M:	Samuel Thibault <samuel.thibault@ens-lyon.org>
+L:	speakup@linux-speakup.org
+S:	Odd Fixes
+W:	http://www.linux-speakup.org/
+F:	drivers/accessibility/speakup/
+
 SPEAR CLOCK FRAMEWORK SUPPORT
 M:	Viresh Kumar <vireshk@kernel.org>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
@@ -16358,16 +16384,6 @@ L:	linux-fbdev@vger.kernel.org
 S:	Maintained
 F:	drivers/staging/sm750fb/
 
-STAGING - SPEAKUP CONSOLE SPEECH DRIVER
-M:	William Hubbs <w.d.hubbs@gmail.com>
-M:	Chris Brannon <chris@the-brannons.com>
-M:	Kirk Reiser <kirk@reisers.ca>
-M:	Samuel Thibault <samuel.thibault@ens-lyon.org>
-L:	speakup@linux-speakup.org
-S:	Odd Fixes
-W:	http://www.linux-speakup.org/
-F:	drivers/staging/speakup/
-
 STAGING - VIA VT665X DRIVERS
 M:	Forest Bond <forest@alittletooquiet.net>
 S:	Odd Fixes

drivers/accessibility/Kconfig

@@ -31,4 +31,6 @@ config A11Y_BRAILLE_CONSOLE
 
 	  If unsure, say N.
 
+source "drivers/accessibility/speakup/Kconfig"
+
 endif # ACCESSIBILITY

drivers/accessibility/Makefile

@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-y				+= braille/
+obj-$(CONFIG_SPEAKUP)		+= speakup/

drivers/accessibility/speakup/TODO

@@ -0,0 +1,22 @@
+Speakup project home:  http://www.linux-speakup.org
+
+Mailing List:  speakup@linux-speakup.org
+
+Speakup is a kernel based screen review package for the linux operating
+system.  It allows blind users to interact with applications on the
+linux console by means of synthetic speech.
+
+Currently, speakup has one issue we know of.
+
+It seems to only happen on SMP systems. It seems that text in the output buffer
+gets garbled because a lock is not set. This bug happens regularly, but no one
+has been able to find a situation which produces it consistently.
+
+Patches, suggestions, corrections, etc, are definitely welcome.
+
+We prefer that you contact us on the mailing list; however, if you do
+not want to subscribe to a mailing list, send your email to all of the
+following:
+
+okash.khawaja@gmail.com, w.d.hubbs@gmail.com, chris@the-brannons.com,
+kirk@reisers.ca and samuel.thibault@ens-lyon.org.

drivers/counter/104-quad-8.c

@@ -1554,7 +1554,6 @@ static int quad8_probe(struct device *dev, unsigned int id)
 	indio_dev->num_channels = ARRAY_SIZE(quad8_channels);
 	indio_dev->channels = quad8_channels;
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
 
 	/* Initialize Counter device and driver data */
 	quad8iio = iio_priv(indio_dev);

drivers/counter/Kconfig

@@ -70,4 +70,15 @@ config FTM_QUADDEC
 	  To compile this driver as a module, choose M here: the
 	  module will be called ftm-quaddec.
 
+config MICROCHIP_TCB_CAPTURE
+	tristate "Microchip Timer Counter Capture driver"
+	depends on HAS_IOMEM && OF
+	select REGMAP_MMIO
+	help
+	  Select this option to enable the Microchip Timer Counter Block
+	  capture driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called microchip-tcb-capture.
+
 endif # COUNTER

drivers/counter/Makefile

@@ -10,3 +10,4 @@ obj-$(CONFIG_STM32_TIMER_CNT)	+= stm32-timer-cnt.o
 obj-$(CONFIG_STM32_LPTIMER_CNT)	+= stm32-lptimer-cnt.o
 obj-$(CONFIG_TI_EQEP)		+= ti-eqep.o
 obj-$(CONFIG_FTM_QUADDEC)	+= ftm-quaddec.o
+obj-$(CONFIG_MICROCHIP_TCB_CAPTURE)	+= microchip-tcb-capture.o

drivers/counter/microchip-tcb-capture.c

@@ -0,0 +1,397 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/**
+ * Copyright (C) 2020 Microchip
+ *
+ * Author: Kamel Bouhara <kamel.bouhara@bootlin.com>
+ */
+#include <linux/clk.h>
+#include <linux/counter.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <soc/at91/atmel_tcb.h>
+
+#define ATMEL_TC_CMR_MASK	(ATMEL_TC_LDRA_RISING | ATMEL_TC_LDRB_FALLING | \
+				 ATMEL_TC_ETRGEDG_RISING | ATMEL_TC_LDBDIS | \
+				 ATMEL_TC_LDBSTOP)
+
+#define ATMEL_TC_QDEN			BIT(8)
+#define ATMEL_TC_POSEN			BIT(9)
+
+struct mchp_tc_data {
+	const struct atmel_tcb_config *tc_cfg;
+	struct counter_device counter;
+	struct regmap *regmap;
+	int qdec_mode;
+	int num_channels;
+	int channel[2];
+	bool trig_inverted;
+};
+
+enum mchp_tc_count_function {
+	MCHP_TC_FUNCTION_INCREASE,
+	MCHP_TC_FUNCTION_QUADRATURE,
+};
+
+static enum counter_count_function mchp_tc_count_functions[] = {
+	[MCHP_TC_FUNCTION_INCREASE] = COUNTER_COUNT_FUNCTION_INCREASE,
+	[MCHP_TC_FUNCTION_QUADRATURE] = COUNTER_COUNT_FUNCTION_QUADRATURE_X4,
+};
+
+enum mchp_tc_synapse_action {
+	MCHP_TC_SYNAPSE_ACTION_NONE = 0,
+	MCHP_TC_SYNAPSE_ACTION_RISING_EDGE,
+	MCHP_TC_SYNAPSE_ACTION_FALLING_EDGE,
+	MCHP_TC_SYNAPSE_ACTION_BOTH_EDGE
+};
+
+static enum counter_synapse_action mchp_tc_synapse_actions[] = {
+	[MCHP_TC_SYNAPSE_ACTION_NONE] = COUNTER_SYNAPSE_ACTION_NONE,
+	[MCHP_TC_SYNAPSE_ACTION_RISING_EDGE] = COUNTER_SYNAPSE_ACTION_RISING_EDGE,
+	[MCHP_TC_SYNAPSE_ACTION_FALLING_EDGE] = COUNTER_SYNAPSE_ACTION_FALLING_EDGE,
+	[MCHP_TC_SYNAPSE_ACTION_BOTH_EDGE] = COUNTER_SYNAPSE_ACTION_BOTH_EDGES,
+};
+
+static struct counter_signal mchp_tc_count_signals[] = {
+	{
+		.id = 0,
+		.name = "Channel A",
+	},
+	{
+		.id = 1,
+		.name = "Channel B",
+	}
+};
+
+static struct counter_synapse mchp_tc_count_synapses[] = {
+	{
+		.actions_list = mchp_tc_synapse_actions,
+		.num_actions = ARRAY_SIZE(mchp_tc_synapse_actions),
+		.signal = &mchp_tc_count_signals[0]
+	},
+	{
+		.actions_list = mchp_tc_synapse_actions,
+		.num_actions = ARRAY_SIZE(mchp_tc_synapse_actions),
+		.signal = &mchp_tc_count_signals[1]
+	}
+};
+
+static int mchp_tc_count_function_get(struct counter_device *counter,
+				      struct counter_count *count,
+				      size_t *function)
+{
+	struct mchp_tc_data *const priv = counter->priv;
+
+	if (priv->qdec_mode)
+		*function = MCHP_TC_FUNCTION_QUADRATURE;
+	else
+		*function = MCHP_TC_FUNCTION_INCREASE;
+
+	return 0;
+}
+
+static int mchp_tc_count_function_set(struct counter_device *counter,
+				      struct counter_count *count,
+				      size_t function)
+{
+	struct mchp_tc_data *const priv = counter->priv;
+	u32 bmr, cmr;
+
+	regmap_read(priv->regmap, ATMEL_TC_BMR, &bmr);
+	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr);
+
+	/* Set capture mode */
+	cmr &= ~ATMEL_TC_WAVE;
+
+	switch (function) {
+	case MCHP_TC_FUNCTION_INCREASE:
+		priv->qdec_mode = 0;
+		/* Set highest rate based on whether soc has gclk or not */
+		bmr &= ~(ATMEL_TC_QDEN | ATMEL_TC_POSEN);
+		if (priv->tc_cfg->has_gclk)
+			cmr |= ATMEL_TC_TIMER_CLOCK2;
+		else
+			cmr |= ATMEL_TC_TIMER_CLOCK1;
+		/* Setup the period capture mode */
+		cmr |=  ATMEL_TC_CMR_MASK;
+		cmr &= ~(ATMEL_TC_ABETRG | ATMEL_TC_XC0);
+		break;
+	case MCHP_TC_FUNCTION_QUADRATURE:
+		if (!priv->tc_cfg->has_qdec)
+			return -EINVAL;
+		/* In QDEC mode settings both channels 0 and 1 are required */
+		if (priv->num_channels < 2 || priv->channel[0] != 0 ||
+		    priv->channel[1] != 1) {
+			pr_err("Invalid channels number or id for quadrature mode\n");
+			return -EINVAL;
+		}
+		priv->qdec_mode = 1;
+		bmr |= ATMEL_TC_QDEN | ATMEL_TC_POSEN;
+		cmr |= ATMEL_TC_ETRGEDG_RISING | ATMEL_TC_ABETRG | ATMEL_TC_XC0;
+		break;
+	}
+
+	regmap_write(priv->regmap, ATMEL_TC_BMR, bmr);
+	regmap_write(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), cmr);
+
+	/* Enable clock and trigger counter */
+	regmap_write(priv->regmap, ATMEL_TC_REG(priv->channel[0], CCR),
+		     ATMEL_TC_CLKEN | ATMEL_TC_SWTRG);
+
+	if (priv->qdec_mode) {
+		regmap_write(priv->regmap,
+			     ATMEL_TC_REG(priv->channel[1], CMR), cmr);
+		regmap_write(priv->regmap,
+			     ATMEL_TC_REG(priv->channel[1], CCR),
+			     ATMEL_TC_CLKEN | ATMEL_TC_SWTRG);
+	}
+
+	return 0;
+}
+
+static int mchp_tc_count_signal_read(struct counter_device *counter,
+				     struct counter_signal *signal,
+				     enum counter_signal_value *val)
+{
+	struct mchp_tc_data *const priv = counter->priv;
+	bool sigstatus;
+	u32 sr;
+
+	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], SR), &sr);
+
+	if (priv->trig_inverted)
+		sigstatus = (sr & ATMEL_TC_MTIOB);
+	else
+		sigstatus = (sr & ATMEL_TC_MTIOA);
+
+	*val = sigstatus ? COUNTER_SIGNAL_HIGH : COUNTER_SIGNAL_LOW;
+
+	return 0;
+}
+
+static int mchp_tc_count_action_get(struct counter_device *counter,
+				    struct counter_count *count,
+				    struct counter_synapse *synapse,
+				    size_t *action)
+{
+	struct mchp_tc_data *const priv = counter->priv;
+	u32 cmr;
+
+	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CMR), &cmr);
+
+	*action = MCHP_TC_SYNAPSE_ACTION_NONE;
+
+	if (cmr & ATMEL_TC_ETRGEDG_NONE)
+		*action = MCHP_TC_SYNAPSE_ACTION_NONE;
+	else if (cmr & ATMEL_TC_ETRGEDG_RISING)
+		*action = MCHP_TC_SYNAPSE_ACTION_RISING_EDGE;
+	else if (cmr & ATMEL_TC_ETRGEDG_FALLING)
+		*action = MCHP_TC_SYNAPSE_ACTION_FALLING_EDGE;
+	else if (cmr & ATMEL_TC_ETRGEDG_BOTH)
+		*action = MCHP_TC_SYNAPSE_ACTION_BOTH_EDGE;
+
+	return 0;
+}
+
+static int mchp_tc_count_action_set(struct counter_device *counter,
+				    struct counter_count *count,
+				    struct counter_synapse *synapse,
+				    size_t action)
+{
+	struct mchp_tc_data *const priv = counter->priv;
+	u32 edge = ATMEL_TC_ETRGEDG_NONE;
+
+	/* QDEC mode is rising edge only */
+	if (priv->qdec_mode)
+		return -EINVAL;
+
+	switch (action) {
+	case MCHP_TC_SYNAPSE_ACTION_NONE:
+		edge = ATMEL_TC_ETRGEDG_NONE;
+		break;
+	case MCHP_TC_SYNAPSE_ACTION_RISING_EDGE:
+		edge = ATMEL_TC_ETRGEDG_RISING;
+		break;
+	case MCHP_TC_SYNAPSE_ACTION_FALLING_EDGE:
+		edge = ATMEL_TC_ETRGEDG_FALLING;
+		break;
+	case MCHP_TC_SYNAPSE_ACTION_BOTH_EDGE:
+		edge = ATMEL_TC_ETRGEDG_BOTH;
+		break;
+	}
+
+	return regmap_write_bits(priv->regmap,
+				ATMEL_TC_REG(priv->channel[0], CMR),
+				ATMEL_TC_ETRGEDG, edge);
+}
+
+static int mchp_tc_count_read(struct counter_device *counter,
+			      struct counter_count *count,
+			      unsigned long *val)
+{
+	struct mchp_tc_data *const priv = counter->priv;
+	u32 cnt;
+
+	regmap_read(priv->regmap, ATMEL_TC_REG(priv->channel[0], CV), &cnt);
+	*val = cnt;
+
+	return 0;
+}
+
+static struct counter_count mchp_tc_counts[] = {
+	{
+		.id = 0,
+		.name = "Timer Counter",
+		.functions_list = mchp_tc_count_functions,
+		.num_functions = ARRAY_SIZE(mchp_tc_count_functions),
+		.synapses = mchp_tc_count_synapses,
+		.num_synapses = ARRAY_SIZE(mchp_tc_count_synapses),
+	},
+};
+
+static struct counter_ops mchp_tc_ops = {
+	.signal_read  = mchp_tc_count_signal_read,
+	.count_read   = mchp_tc_count_read,
+	.function_get = mchp_tc_count_function_get,
+	.function_set = mchp_tc_count_function_set,
+	.action_get   = mchp_tc_count_action_get,
+	.action_set   = mchp_tc_count_action_set
+};
+
+static const struct atmel_tcb_config tcb_rm9200_config = {
+		.counter_width = 16,
+};
+
+static const struct atmel_tcb_config tcb_sam9x5_config = {
+		.counter_width = 32,
+};
+
+static const struct atmel_tcb_config tcb_sama5d2_config = {
+		.counter_width = 32,
+		.has_gclk = true,
+		.has_qdec = true,
+};
+
+static const struct atmel_tcb_config tcb_sama5d3_config = {
+		.counter_width = 32,
+		.has_qdec = true,
+};
+
+static const struct of_device_id atmel_tc_of_match[] = {
+	{ .compatible = "atmel,at91rm9200-tcb", .data = &tcb_rm9200_config, },
+	{ .compatible = "atmel,at91sam9x5-tcb", .data = &tcb_sam9x5_config, },
+	{ .compatible = "atmel,sama5d2-tcb", .data = &tcb_sama5d2_config, },
+	{ .compatible = "atmel,sama5d3-tcb", .data = &tcb_sama5d3_config, },
+	{ /* sentinel */ }
+};
+
+static void mchp_tc_clk_remove(void *ptr)
+{
+	clk_disable_unprepare((struct clk *)ptr);
+}
+
+static int mchp_tc_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	const struct atmel_tcb_config *tcb_config;
+	const struct of_device_id *match;
+	struct mchp_tc_data *priv;
+	char clk_name[7];
+	struct regmap *regmap;
+	struct clk *clk[3];
+	int channel;
+	int ret, i;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, priv);
+
+	match = of_match_node(atmel_tc_of_match, np->parent);
+	tcb_config = match->data;
+	if (!tcb_config) {
+		dev_err(&pdev->dev, "No matching parent node found\n");
+		return -ENODEV;
+	}
+
+	regmap = syscon_node_to_regmap(np->parent);
+	if (IS_ERR(priv->regmap))
+		return PTR_ERR(priv->regmap);
+
+	/* max. channels number is 2 when in QDEC mode */
+	priv->num_channels = of_property_count_u32_elems(np, "reg");
+	if (priv->num_channels < 0) {
+		dev_err(&pdev->dev, "Invalid or missing channel\n");
+		return -EINVAL;
+	}
+
+	/* Register channels and initialize clocks */
+	for (i = 0; i < priv->num_channels; i++) {
+		ret = of_property_read_u32_index(np, "reg", i, &channel);
+		if (ret < 0 || channel > 2)
+			return -ENODEV;
+
+		priv->channel[i] = channel;
+
+		snprintf(clk_name, sizeof(clk_name), "t%d_clk", channel);
+
+		clk[i] = of_clk_get_by_name(np->parent, clk_name);
+		if (IS_ERR(clk[i])) {
+			/* Fallback to t0_clk */
+			clk[i] = of_clk_get_by_name(np->parent, "t0_clk");
+			if (IS_ERR(clk[i]))
+				return PTR_ERR(clk[i]);
+		}
+
+		ret = clk_prepare_enable(clk[i]);
+		if (ret)
+			return ret;
+
+		ret = devm_add_action_or_reset(&pdev->dev,
+					       mchp_tc_clk_remove,
+					       clk[i]);
+		if (ret)
+			return ret;
+
+		dev_dbg(&pdev->dev,
+			"Initialized capture mode on channel %d\n",
+			channel);
+	}
+
+	priv->tc_cfg = tcb_config;
+	priv->regmap = regmap;
+	priv->counter.name = dev_name(&pdev->dev);
+	priv->counter.parent = &pdev->dev;
+	priv->counter.ops = &mchp_tc_ops;
+	priv->counter.num_counts = ARRAY_SIZE(mchp_tc_counts);
+	priv->counter.counts = mchp_tc_counts;
+	priv->counter.num_signals = ARRAY_SIZE(mchp_tc_count_signals);
+	priv->counter.signals = mchp_tc_count_signals;
+	priv->counter.priv = priv;
+
+	return devm_counter_register(&pdev->dev, &priv->counter);
+}
+
+static const struct of_device_id mchp_tc_dt_ids[] = {
+	{ .compatible = "microchip,tcb-capture", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mchp_tc_dt_ids);
+
+static struct platform_driver mchp_tc_driver = {
+	.probe = mchp_tc_probe,
+	.driver = {
+		.name = "microchip-tcb-capture",
+		.of_match_table = mchp_tc_dt_ids,
+	},
+};
+module_platform_driver(mchp_tc_driver);
+
+MODULE_AUTHOR("Kamel Bouhara <kamel.bouhara@bootlin.com>");
+MODULE_DESCRIPTION("Microchip TCB Capture driver");
+MODULE_LICENSE("GPL v2");

drivers/counter/stm32-lptimer-cnt.c

@@ -648,7 +648,6 @@ static int stm32_lptim_cnt_probe(struct platform_device *pdev)
 
 	/* Initialize IIO device */
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &stm32_lptim_cnt_iio_info;
 	if (ddata->has_encoder)

drivers/iio/accel/Kconfig

@@ -116,18 +116,24 @@ config BMA400
 	tristate "Bosch BMA400 3-Axis Accelerometer Driver"
 	select REGMAP
 	select BMA400_I2C if I2C
+	select BMA400_SPI if SPI
 	help
 	  Say Y here if you want to build a driver for the Bosch BMA400
 	  triaxial acceleration sensor.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called bma400_core and you will also get
-	  bma400_i2c if I2C is enabled.
+	  bma400_i2c if I2C is enabled and bma400_spi if SPI is
+	  enabled.
 
 config BMA400_I2C
 	tristate
 	depends on BMA400
 
+config BMA400_SPI
+	tristate
+	depends on BMA400
+
 config BMC150_ACCEL
 	tristate "Bosch BMC150 Accelerometer Driver"
 	select IIO_BUFFER

drivers/iio/accel/Makefile

@@ -16,6 +16,7 @@ obj-$(CONFIG_BMA180) += bma180.o
 obj-$(CONFIG_BMA220) += bma220_spi.o
 obj-$(CONFIG_BMA400) += bma400_core.o
 obj-$(CONFIG_BMA400_I2C) += bma400_i2c.o
+obj-$(CONFIG_BMA400_SPI) += bma400_spi.o
 obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
 obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o
 obj-$(CONFIG_BMC150_ACCEL_SPI) += bmc150-accel-spi.o

drivers/iio/accel/adis16201.c

@@ -271,7 +271,6 @@ static int adis16201_probe(struct spi_device *spi)
 	spi_set_drvdata(spi, indio_dev);
 
 	indio_dev->name = spi->dev.driver->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16201_info;
 
 	indio_dev->channels = adis16201_channels;

drivers/iio/accel/adis16209.c

@@ -282,7 +282,6 @@ static int adis16209_probe(struct spi_device *spi)
 	spi_set_drvdata(spi, indio_dev);
 
 	indio_dev->name = spi->dev.driver->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16209_info;
 	indio_dev->channels = adis16209_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adis16209_channels);

drivers/iio/accel/adxl345_core.c

@@ -4,7 +4,7 @@
  *
  * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
  *
- * Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf
  */
 
 #include <linux/module.h>
@@ -246,7 +246,6 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap,
 		return ret;
 	}
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &adxl345_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;

drivers/iio/accel/adxl372.c

@@ -795,13 +795,9 @@ static int adxl372_buffer_postenable(struct iio_dev *indio_dev)
 	unsigned int mask;
 	int i, ret;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret < 0)
-		return ret;
-
 	ret = adxl372_set_interrupts(st, ADXL372_INT1_MAP_FIFO_FULL_MSK, 0);
 	if (ret < 0)
-		goto err;
+		return ret;
 
 	mask = *indio_dev->active_scan_mask;
 
@@ -810,10 +806,8 @@ static int adxl372_buffer_postenable(struct iio_dev *indio_dev)
 			break;
 	}
 
-	if (i == ARRAY_SIZE(adxl372_axis_lookup_table)) {
+	if (i == ARRAY_SIZE(adxl372_axis_lookup_table))
-		ret = -EINVAL;
+		return -EINVAL;
-		goto err;
-	}
 
 	st->fifo_format = adxl372_axis_lookup_table[i].fifo_format;
 	st->fifo_set_size = bitmap_weight(indio_dev->active_scan_mask,
@@ -833,14 +827,10 @@ static int adxl372_buffer_postenable(struct iio_dev *indio_dev)
 	if (ret < 0) {
 		st->fifo_mode = ADXL372_FIFO_BYPASSED;
 		adxl372_set_interrupts(st, 0, 0);
-		goto err;
+		return ret;
 	}
 
 	return 0;
-
-err:
-	iio_triggered_buffer_predisable(indio_dev);
-	return ret;
 }
 
 static int adxl372_buffer_predisable(struct iio_dev *indio_dev)
@@ -851,7 +841,7 @@ static int adxl372_buffer_predisable(struct iio_dev *indio_dev)
 	st->fifo_mode = ADXL372_FIFO_BYPASSED;
 	adxl372_configure_fifo(st);
 
-	return iio_triggered_buffer_predisable(indio_dev);
+	return 0;
 }
 
 static const struct iio_buffer_setup_ops adxl372_buffer_ops = {
@@ -938,7 +928,6 @@ int adxl372_probe(struct device *dev, struct regmap *regmap,
 	indio_dev->channels = adxl372_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adxl372_channels);
 	indio_dev->available_scan_masks = adxl372_channel_masks;
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &adxl372_info;
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;

drivers/iio/accel/bma180.c

@@ -1038,7 +1038,6 @@ static int bma180_probe(struct i2c_client *client,
 		goto err_chip_disable;
 
 	mutex_init(&data->mutex);
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = data->part_info->channels;
 	indio_dev->num_channels = data->part_info->num_channels;
 	indio_dev->name = id->name;

drivers/iio/accel/bma220_spi.c

@@ -237,7 +237,6 @@ static int bma220_probe(struct spi_device *spi)
 	spi_set_drvdata(spi, indio_dev);
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &bma220_info;
 	indio_dev->name = BMA220_DEVICE_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -309,12 +308,14 @@ static const struct spi_device_id bma220_spi_id[] = {
 	{}
 };
 
+#ifdef CONFIG_ACPI
 static const struct acpi_device_id bma220_acpi_id[] = {
 	{"BMA0220", 0},
 	{}
 };
 
 MODULE_DEVICE_TABLE(spi, bma220_spi_id);
+#endif
 
 static struct spi_driver bma220_driver = {
 	.driver = {

drivers/iio/accel/bma400_core.c

@@ -816,7 +816,6 @@ int bma400_probe(struct device *dev, struct regmap *regmap, const char *name)
 		return ret;
 
 	mutex_init(&data->mutex);
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &bma400_info;
 	indio_dev->channels = bma400_channels;

drivers/iio/accel/bma400_spi.c

@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * SPI IIO driver for Bosch BMA400 triaxial acceleration sensor.
+ *
+ * Copyright 2020 Dan Robertson <dan@dlrobertson.com>
+ *
+ */
+#include <linux/bits.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "bma400.h"
+
+#define BMA400_MAX_SPI_READ 2
+#define BMA400_SPI_READ_BUFFER_SIZE (BMA400_MAX_SPI_READ + 1)
+
+static int bma400_regmap_spi_read(void *context,
+				  const void *reg, size_t reg_size,
+				  void *val, size_t val_size)
+{
+	struct device *dev = context;
+	struct spi_device *spi = to_spi_device(dev);
+	u8 result[BMA400_SPI_READ_BUFFER_SIZE];
+	ssize_t status;
+
+	if (val_size > BMA400_MAX_SPI_READ)
+		return -EINVAL;
+
+	status = spi_write_then_read(spi, reg, 1, result, val_size + 1);
+	if (status)
+		return status;
+
+	/*
+	 * From the BMA400 datasheet:
+	 *
+	 * > For a basic read operation two bytes have to be read and the first
+	 * > has to be dropped and the second byte must be interpreted.
+	 */
+	memcpy(val, result + 1, val_size);
+
+	return 0;
+}
+
+static int bma400_regmap_spi_write(void *context, const void *data,
+				   size_t count)
+{
+	struct device *dev = context;
+	struct spi_device *spi = to_spi_device(dev);
+
+	return spi_write(spi, data, count);
+}
+
+static struct regmap_bus bma400_regmap_bus = {
+	.read = bma400_regmap_spi_read,
+	.write = bma400_regmap_spi_write,
+	.read_flag_mask = BIT(7),
+	.max_raw_read = BMA400_MAX_SPI_READ,
+};
+
+static int bma400_spi_probe(struct spi_device *spi)
+{
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct regmap *regmap;
+	unsigned int val;
+	int ret;
+
+	regmap = devm_regmap_init(&spi->dev, &bma400_regmap_bus,
+				  &spi->dev, &bma400_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "failed to create regmap\n");
+		return PTR_ERR(regmap);
+	}
+
+	/*
+	 * Per the bma400 datasheet, the first SPI read may
+	 * return garbage. As the datasheet recommends, the
+	 * chip ID register will be read here and checked
+	 * again in the following probe.
+	 */
+	ret = regmap_read(regmap, BMA400_CHIP_ID_REG, &val);
+	if (ret)
+		dev_err(&spi->dev, "Failed to read chip id register\n");
+
+	return bma400_probe(&spi->dev, regmap, id->name);
+}
+
+static int bma400_spi_remove(struct spi_device *spi)
+{
+	return bma400_remove(&spi->dev);
+}
+
+static const struct spi_device_id bma400_spi_ids[] = {
+	{ "bma400", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, bma400_spi_ids);
+
+static const struct of_device_id bma400_of_spi_match[] = {
+	{ .compatible = "bosch,bma400" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, bma400_of_spi_match);
+
+static struct spi_driver bma400_spi_driver = {
+	.driver = {
+		.name = "bma400",
+		.of_match_table = bma400_of_spi_match,
+	},
+	.probe    = bma400_spi_probe,
+	.remove   = bma400_spi_remove,
+	.id_table = bma400_spi_ids,
+};
+
+module_spi_driver(bma400_spi_driver);
+MODULE_AUTHOR("Dan Robertson <dan@dlrobertson.com>");
+MODULE_DESCRIPTION("Bosch BMA400 triaxial acceleration sensor (SPI)");
+MODULE_LICENSE("GPL");

drivers/iio/accel/bmc150-accel-core.c

@@ -1411,7 +1411,7 @@ static int bmc150_accel_buffer_postenable(struct iio_dev *indio_dev)
 	int ret = 0;
 
 	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_postenable(indio_dev);
+		return 0;
 
 	mutex_lock(&data->mutex);
 
@@ -1443,7 +1443,7 @@ static int bmc150_accel_buffer_predisable(struct iio_dev *indio_dev)
 	struct bmc150_accel_data *data = iio_priv(indio_dev);
 
 	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_predisable(indio_dev);
+		return 0;
 
 	mutex_lock(&data->mutex);
 
@@ -1574,7 +1574,6 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = data->chip_info->channels;
 	indio_dev->num_channels = data->chip_info->num_channels;
 	indio_dev->name = name ? name : data->chip_info->name;

drivers/iio/accel/cros_ec_accel_legacy.c

@@ -33,6 +33,11 @@
  */
 #define ACCEL_LEGACY_NSCALE 9586168
 
+/*
+ * Sensor frequency is hard-coded to 10Hz.
+ */
+static const int cros_ec_legacy_sample_freq[] = { 10, 0 };
+
 static int cros_ec_accel_legacy_read_cmd(struct iio_dev *indio_dev,
 				  unsigned long scan_mask, s16 *data)
 {
@@ -96,6 +101,11 @@ static int cros_ec_accel_legacy_read(struct iio_dev *indio_dev,
 		*val = 0;
 		ret = IIO_VAL_INT;
 		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = cros_ec_legacy_sample_freq[0];
+		*val2 = cros_ec_legacy_sample_freq[1];
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
 	default:
 		ret = cros_ec_sensors_core_read(st, chan, val, val2,
 				mask);
@@ -120,9 +130,39 @@ static int cros_ec_accel_legacy_write(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
+/**
+ * cros_ec_accel_legacy_read_avail() - get available values
+ * @indio_dev:		pointer to state information for device
+ * @chan:	channel specification structure table
+ * @vals:	list of available values
+ * @type:	type of data returned
+ * @length:	number of data returned in the array
+ * @mask:	specifies which values to be requested
+ *
+ * Return:	an error code or IIO_AVAIL_LIST
+ */
+static int cros_ec_accel_legacy_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:
+		*length = ARRAY_SIZE(cros_ec_legacy_sample_freq);
+		*vals = cros_ec_legacy_sample_freq;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_LIST;
+	}
+
+	return -EINVAL;
+}
+
 static const struct iio_info cros_ec_accel_legacy_info = {
 	.read_raw = &cros_ec_accel_legacy_read,
 	.write_raw = &cros_ec_accel_legacy_write,
+	.read_avail = &cros_ec_accel_legacy_read_avail,
 };
 
 /*
@@ -142,7 +182,11 @@ static const struct iio_info cros_ec_accel_legacy_info = {
 		.info_mask_separate =					\
 			BIT(IIO_CHAN_INFO_RAW) |			\
 			BIT(IIO_CHAN_INFO_CALIBBIAS),			\
-		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SCALE),	\
+		.info_mask_shared_by_all =				\
+			BIT(IIO_CHAN_INFO_SCALE) |			\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
+		.info_mask_shared_by_all_available =			\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
 		.ext_info = cros_ec_sensors_ext_info,			\
 		.scan_type = {						\
 			.sign = 's',					\

drivers/iio/accel/da280.c

@@ -120,7 +120,6 @@ static int da280_probe(struct i2c_client *client,
 	data->client = client;
 	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &da280_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = da280_channels;

drivers/iio/accel/da311.c

@@ -231,7 +231,6 @@ static int da311_probe(struct i2c_client *client,
 	data->client = client;
 	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &da311_info;
 	indio_dev->name = "da311";
 	indio_dev->modes = INDIO_DIRECT_MODE;

drivers/iio/accel/dmard06.c

@@ -161,7 +161,6 @@ static int dmard06_probe(struct i2c_client *client,
 	dmard06->chip_id = ret;
 
 	i2c_set_clientdata(client, indio_dev);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = DMARD06_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = dmard06_channels;

drivers/iio/accel/dmard09.c

@@ -116,7 +116,6 @@ static int dmard09_probe(struct i2c_client *client,
 	}
 
 	i2c_set_clientdata(client, indio_dev);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = DMARD09_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = dmard09_channels;

drivers/iio/accel/dmard10.c

@@ -196,7 +196,6 @@ static int dmard10_probe(struct i2c_client *client,
 	data->client = client;
 	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &dmard10_info;
 	indio_dev->name = "dmard10";
 	indio_dev->modes = INDIO_DIRECT_MODE;