Merge tag 'staging-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO driver updates from Greg KH:
 "Here is the "big" set of staging and IIO driver patches for 5.12-rc1.

  Nothing really huge in here, the number of staging tree patches has
  gone down for a bit, maybe there's only so much churn to happen in
  here at the moment.

  The IIO changes are:

   - new drivers

   - new DT bindings

   - new iio driver features

  with full details in the shortlog.

  The staging driver patches are just a lot of tiny coding style
  cleanups, along with some semi-larger hikey driver cleanups as those
  are _almost_ good enough to get out of the staging tree, but will
  probably have to wait until 5.13 to have happen.

  All of these have been in linux-next with no reported issues"

* tag 'staging-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (189 commits)
  staging: hikey9xx: Fix alignment of function parameters
  staging: greybus: Fixed a misspelling in hid.c
  staging: wimax/i2400m: fix some byte order issues found by sparse
  staging: wimax: i2400m: fix some incorrect type warnings
  staging: greybus: minor code style fix
  staging:wlan-ng: use memdup_user instead of kmalloc/copy_from_user
  staging:r8188eu: use IEEE80211_FCTL_* kernel definitions
  staging: rtl8192e: remove multiple blank lines
  staging: greybus: Fixed alignment issue in hid.c
  staging: wfx: remove unused included header files
  staging: nvec: minor coding style fix
  staging: wimax: Fix some coding style problem
  staging: fbtft: add tearing signal detect
  staging: vt6656: Fixed issue with alignment in rf.c
  staging: qlge: Remove duplicate word in comment
  staging: rtl8723bs: remove obsolete commented out code
  staging: rtl8723bs: fix function comments to follow kernel-doc
  staging: wfx: avoid defining array of flexible struct
  staging: rtl8723bs: Replace one-element array with flexible-array member in struct ndis_80211_var_ie
  staging: Replace lkml.org links with lore
  ...

Documentation/ABI/testing/sysfs-bus-iio

@@ -198,6 +198,7 @@ Description:
 		Units after application of scale and offset are m/s^2.
 
 What:		/sys/bus/iio/devices/iio:deviceX/in_angl_raw
+What:		/sys/bus/iio/devices/iio:deviceX/in_anglY_raw
 KernelVersion:	4.17
 Contact:	linux-iio@vger.kernel.org
 Description:
@@ -1812,3 +1813,13 @@ Contact:	linux-iio@vger.kernel.org
 Description:
 		Unscaled light intensity according to CIE 1931/DIN 5033 color space.
 		Units after application of scale are nano nanowatts per square meter.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_anglY_label
+KernelVersion:	5.12
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Optional symbolic label for channel Y.
+		For Intel hid hinge sensor, the label values are:
+		hinge, keyboard, screen. It means the three channels
+		each correspond respectively to hinge angle, keyboard angle,
+		and screen angle.

Documentation/ABI/testing/sysfs-bus-iio-dac-ad5766

@@ -0,0 +1,31 @@
+What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_dither_enable
+KernelVersion:	5.12
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Dither enable. Write 1 to enable dither or 0 to disable it.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_dither_invert
+KernelVersion:	5.12
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Inverts the dither applied to the selected DAC channel. Dither is not
+		inverted by default. Write "1" to invert dither.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_dither_scale_available
+KernelVersion:	5.12
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Returns possible scalings available for the current channel.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_dither_scale
+KernelVersion:	5.12
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Scales the dither before it is applied to the selected channel.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY_dither_source
+KernelVersion:	5.12
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Selects dither source applied to the selected channel. Write "0" to
+		select N0 source, write "1" to select N1 source.

Documentation/devicetree/bindings/iio/accel/kionix,kxcjk1013.yaml

@@ -20,6 +20,9 @@ properties:
   reg:
     maxItems: 1
 
+  vdd-supply: true
+  vddio-supply: true
+
   mount-matrix:
     description: an optional 3x3 mounting rotation matrix.
 

Documentation/devicetree/bindings/iio/adc/xilinx-xadc.txt

@@ -1,13 +1,22 @@
 Xilinx XADC device driver
 
-This binding document describes the bindings for both of them since the
+This binding document describes the bindings for the Xilinx 7 Series XADC as well
-bindings are very similar. The Xilinx XADC is a ADC that can be found in the
+as the UltraScale/UltraScale+ System Monitor.
-series 7 FPGAs from Xilinx. The XADC has a DRP interface for communication.
+
-Currently two different frontends for the DRP interface exist. One that is only
+The Xilinx XADC is an ADC that can be found in the Series 7 FPGAs from Xilinx.
-available on the ZYNQ family as a hardmacro in the SoC portion of the ZYNQ. The
+The XADC has a DRP interface for communication. Currently two different
-other one is available on all series 7 platforms and is a softmacro with a AXI
+frontends for the DRP interface exist. One that is only available on the ZYNQ
-interface. This binding document describes the bindings for both of them since
+family as a hardmacro in the SoC portion of the ZYNQ. The other one is available
-the bindings are very similar.
+on all series 7 platforms and is a softmacro with a AXI interface. This binding
+document describes the bindings for both of them since the bindings are very
+similar.
+
+The Xilinx System Monitor is an ADC that is found in the UltraScale and
+UltraScale+ FPGAs from Xilinx. The System Monitor provides a DRP interface for
+communication. Xilinx provides a standard IP core that can be used to access the
+System Monitor through an AXI interface in the FPGA fabric. This IP core is
+called the Xilinx System Management Wizard. This document describes the bindings
+for this IP.
 
 Required properties:
 	- compatible: Should be one of
@@ -15,11 +24,14 @@ Required properties:
 		  configuration interface to interface to the XADC hardmacro.
 		* "xlnx,axi-xadc-1.00.a": When using the axi-xadc pcore to
 		  interface to the XADC hardmacro.
+		* "xlnx,system-management-wiz-1.3": When using the
+		  Xilinx System Management Wizard fabric IP core to access the
+		  UltraScale and UltraScale+ System Monitor.
 	- reg: Address and length of the register set for the device
 	- interrupts: Interrupt for the XADC control interface.
 	- clocks: When using the ZYNQ this must be the ZYNQ PCAP clock,
-	  when using the AXI-XADC pcore this must be the clock that provides the
+	  when using the axi-xadc or the axi-system-management-wizard this must be
-	  clock to the AXI bus interface of the core.
+	  the clock that provides the clock to the AXI bus interface of the core.
 
 Optional properties:
 	- xlnx,external-mux:
@@ -110,3 +122,20 @@ Examples:
 			};
 		};
 	};
+
+	adc@80000000 {
+		compatible = "xlnx,system-management-wiz-1.3";
+		reg = <0x80000000 0x1000>;
+		interrupts = <0 81 4>;
+		interrupt-parent = <&gic>;
+		clocks = <&fpga1_clk>;
+
+		xlnx,channels {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			channel@0 {
+				reg = <0>;
+				xlnx,bipolar;
+			};
+		};
+	};

Documentation/devicetree/bindings/iio/dac/adi,ad5766.yaml

@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2020 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad5766.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5766 DAC device driver
+
+maintainers:
+  - Cristian Pop <cristian.pop@analog.com>
+
+description: |
+  Bindings for the Analog Devices AD5766 current DAC device. Datasheet can be
+  found here:
+    https://www.analog.com/media/en/technical-documentation/data-sheets/ad5766-5767.pdf
+
+properties:
+  compatible:
+    enum:
+      - adi,ad5766
+      - adi,ad5767
+
+  output-range-microvolts:
+    description: Select converter output range.
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 1000000
+
+  spi-cpol: true
+
+  reset-gpios:
+    description: GPIO spec for the RESET pin. As the line is active low, it
+      should be marked GPIO_ACTIVE_LOW.
+    maxItems: 1
+
+required:
+  - compatible
+  - output-range-microvolts
+  - reg
+  - spi-max-frequency
+  - spi-cpol
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          ad5766@0 {
+              compatible = "adi,ad5766";
+              output-range-microvolts = <(-5000) 5000>;
+              reg = <0>;
+              spi-cpol;
+              spi-max-frequency = <1000000>;
+              reset-gpios = <&gpio 22 0>;
+            };
+      };

Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml

@@ -39,20 +39,39 @@ properties:
 
 allOf:
   - if:
-      not:
+      properties:
-        properties:
+        compatible:
-          compatible:
+          contains:
-            contains:
+            const: microchip,mcp4725
-              const: microchip,mcp4726
     then:
       properties:
         vref-supply: false
+      required:
+        - vdd-supply
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: microchip,mcp4726
+    then:
+      anyOf:
+        - required:
+            - vdd-supply
+        - required:
+            - vref-supply
+
+  - if:
+      not:
+        required:
+          - vref-supply
+    then:
+      properties:
         microchip,vref-buffered: false
 
 required:
   - compatible
   - reg
-  - vdd-supply
 
 additionalProperties: false
 

Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml

@@ -19,6 +19,9 @@ properties:
   reg:
     maxItems: 1
 
+  vdd-supply: true
+  vddio-supply: true
+
   interrupts:
     minItems: 1
     description:

Documentation/devicetree/bindings/iio/gyroscope/invensense,mpu3050.txt

@@ -1,45 +0,0 @@
-Invensense MPU-3050 Gyroscope device tree bindings
-
-Required properties:
-  - compatible : should be "invensense,mpu3050"
-  - reg : the I2C address of the sensor
-
-Optional properties:
-  - interrupts : interrupt mapping for the trigger interrupt from the
-    internal oscillator. The following IRQ modes are supported:
-    IRQ_TYPE_EDGE_RISING, IRQ_TYPE_EDGE_FALLING, IRQ_TYPE_LEVEL_HIGH and
-    IRQ_TYPE_LEVEL_LOW. The driver should detect and configure the hardware
-    for the desired interrupt type.
-  - vdd-supply : supply regulator for the main power voltage.
-  - vlogic-supply : supply regulator for the signal voltage.
-  - mount-matrix : see iio/mount-matrix.txt
-
-Optional subnodes:
-  - The MPU-3050 will pass through and forward the I2C signals from the
-    incoming I2C bus, alternatively drive traffic to a slave device (usually
-    an accelerometer) on its own initiative. Therefore is supports a subnode
-    i2c gate node. For details see: i2c/i2c-gate.txt
-
-Example:
-
-mpu3050@68 {
-	compatible = "invensense,mpu3050";
-	reg = <0x68>;
-	interrupt-parent = <&foo>;
-	interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
-	vdd-supply = <&bar>;
-	vlogic-supply = <&baz>;
-
-	/* External I2C interface */
-	i2c-gate {
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		fnord@18 {
-			compatible = "fnord";
-			reg = <0x18>;
-			interrupt-parent = <&foo>;
-			interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
-		};
-	};
-};

Documentation/devicetree/bindings/iio/gyroscope/invensense,mpu3050.yaml

@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/gyroscope/invensense,mpu3050.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Invensense MPU-3050 Gyroscope
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+properties:
+  compatible:
+    const: invensense,mpu3050
+
+  reg:
+    maxItems: 1
+
+  vdd-supply: true
+
+  vlogic-supply: true
+
+  interrupts:
+    minItems: 1
+    description:
+      Interrupt mapping for the trigger interrupt from the internal oscillator.
+
+  mount-matrix: true
+
+  i2c-gate:
+    $ref: /schemas/i2c/i2c-controller.yaml
+    unevaluatedProperties: false
+    description: |
+      The MPU-3050 will pass through and forward the I2C signals from the
+      incoming I2C bus, alternatively drive traffic to a slave device (usually
+      an accelerometer) on its own initiative. Therefore is supports an
+      i2c-gate subnode.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        gyroscope@68 {
+            compatible = "invensense,mpu3050";
+            reg = <0x68>;
+            interrupt-parent = <&foo>;
+            interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
+            vdd-supply = <&bar>;
+            vlogic-supply = <&baz>;
+
+            i2c-gate {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                magnetometer@c {
+                    compatible = "ak,ak8975";
+                    reg = <0x0c>;
+                };
+            };
+        };
+    };
+...

Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt

@@ -1,67 +0,0 @@
-InvenSense MPU-6050 Six-Axis (Gyro + Accelerometer) MEMS MotionTracking Device
-
-http://www.invensense.com/mems/gyro/mpu6050.html
-
-Required properties:
- - compatible : should be one of
-		"invensense,mpu6000"
-		"invensense,mpu6050"
- 		"invensense,mpu6500"
-		"invensense,mpu6515"
-		"invensense,mpu9150"
-		"invensense,mpu9250"
-		"invensense,mpu9255"
-		"invensense,icm20608"
-		"invensense,icm20609"
-		"invensense,icm20689"
-		"invensense,icm20602"
-		"invensense,icm20690"
-		"invensense,iam20680"
- - reg : the I2C address of the sensor
- - interrupts: interrupt mapping for IRQ. It should be configured with flags
-   IRQ_TYPE_LEVEL_HIGH, IRQ_TYPE_EDGE_RISING, IRQ_TYPE_LEVEL_LOW or
-   IRQ_TYPE_EDGE_FALLING.
-
-  Refer to interrupt-controller/interrupts.txt for generic interrupt client node
-  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
-   simple enough to be described using the i2c-gate binding. See
-   i2c/i2c-gate.txt for more details.
-
-Example:
-	mpu6050@68 {
-		compatible = "invensense,mpu6050";
-		reg = <0x68>;
-		interrupt-parent = <&gpio1>;
-		interrupts = <18 IRQ_TYPE_EDGE_RISING>;
-		mount-matrix = "-0.984807753012208",  /* x0 */
-		               "0",                   /* y0 */
-		               "-0.173648177666930",  /* z0 */
-		               "0",                   /* x1 */
-		               "-1",                  /* y1 */
-		               "0",                   /* z1 */
-		               "-0.173648177666930",  /* x2 */
-		               "0",                   /* y2 */
-		               "0.984807753012208";   /* z2 */
-	};
-
-
-	mpu9250@68 {
-		compatible = "invensense,mpu9250";
-		reg = <0x68>;
-		interrupt-parent = <&gpio3>;
-		interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
-		i2c-gate {
-			#address-cells = <1>;
-			#size-cells = <0>;
-			ax8975@c {
-				compatible = "ak,ak8975";
-				reg = <0x0c>;
-			};
-		};
-	};

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

@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/imu/invensense,mpu6050.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: InvenSense MPU-6050 Six-Axis (Gyro + Accelerometer) MEMS MotionTracking Device
+
+maintainers:
+  - Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
+
+description: |
+  These devices support both I2C and SPI bus interfaces.
+
+properties:
+  compatible:
+    enum:
+      - invensense,iam20680
+      - invensense,icm20608
+      - invensense,icm20609
+      - invensense,icm20689
+      - invensense,icm20602
+      - invensense,icm20690
+      - invensense,mpu6000
+      - invensense,mpu6050
+      - invensense,mpu6500
+      - invensense,mpu6515
+      - invensense,mpu6880
+      - invensense,mpu9150
+      - invensense,mpu9250
+      - invensense,mpu9255
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  spi-max-frequency: true
+
+  vdd-supply: true
+  vddio-supply: true
+
+  mount-matrix: true
+
+  i2c-gate:
+    $ref: /schemas/i2c/i2c-controller.yaml
+    unevaluatedProperties: false
+    description: |
+      These devices also support an auxiliary i2c bus via an i2c-gate.
+
+allOf:
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - invensense,mpu9150
+                - invensense,mpu9250
+                - invensense,mpu9255
+    then:
+      properties:
+        i2c-gate: false
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        imu@68 {
+            compatible = "invensense,mpu9250";
+            reg = <0x68>;
+            interrupt-parent = <&gpio3>;
+            interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
+            mount-matrix = "-0.984807753012208",  /* x0 */
+                           "0",                   /* y0 */
+                           "-0.173648177666930",  /* z0 */
+                           "0",                   /* x1 */
+                           "-1",                  /* y1 */
+                           "0",                   /* z1 */
+                           "-0.173648177666930",  /* x2 */
+                           "0",                   /* y2 */
+                           "0.984807753012208";   /* z2 */
+            i2c-gate {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                magnetometer@c {
+                    compatible = "ak,ak8975";
+                    reg = <0x0c>;
+                };
+            };
+        };
+    };
+...

Documentation/devicetree/bindings/iio/magnetometer/bosch,bmc150_magn.yaml

@@ -30,6 +30,9 @@ properties:
   reg:
     maxItems: 1
 
+  vdd-supply: true
+  vddio-supply: true
+
   interrupts:
     maxItems: 1
 

Documentation/devicetree/bindings/iio/magnetometer/yamaha,yas530.yaml

@@ -0,0 +1,112 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/magnetometer/yamaha,yas530.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Yamaha YAS530 family of magnetometer sensors
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description:
+  The Yamaha YAS530 magnetometers is a line of 3-axis magnetometers
+  first introduced by Yamaha in 2009 with the YAS530. They are successors
+  of Yamaha's first magnetometer YAS529. Over the years this magnetometer
+  has been miniaturized and appeared in a number of different variants.
+
+properties:
+  $nodename:
+    pattern: '^magnetometer@[0-9a-f]+$'
+
+  compatible:
+    items:
+      - enum:
+          - yamaha,yas530
+          - yamaha,yas532
+          - yamaha,yas533
+          - yamaha,yas535
+          - yamaha,yas536
+          - yamaha,yas537
+          - yamaha,yas539
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+    description: The YAS530 sensor has a RSTN pin used to reset
+      the logic inside the sensor. This GPIO line should connect
+      to that pin and be marked as GPIO_ACTIVE_LOW.
+
+  interrupts:
+    maxItems: 1
+    description: Interrupt for INT pin for interrupt generation.
+      The polarity, whether the interrupt is active on the rising
+      or the falling edge, is software-configurable in the hardware.
+
+  vdd-supply:
+    description: An optional regulator providing core power supply
+      on the VDD pin, typically 1.8 V or 3.0 V.
+
+  iovdd-supply:
+    description: An optional regulator providing I/O power supply
+      for the I2C interface on the IOVDD pin, typically 1.8 V.
+
+  mount-matrix:
+    description: An optional 3x3 mounting rotation matrix.
+
+allOf:
+  - if:
+      not:
+        properties:
+          compatible:
+            items:
+              const: yamaha,yas530
+    then:
+      properties:
+        reset-gpios: false
+
+  - if:
+      properties:
+        compatible:
+          items:
+            const: yamaha,yas539
+    then:
+      properties:
+        interrupts: false
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    i2c-0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        magnetometer@2e {
+          compatible = "yamaha,yas530";
+          reg = <0x2e>;
+          vdd-supply = <&ldo1_reg>;
+          iovdd-supply = <&ldo2_reg>;
+          reset-gpios = <&gpio6 12 GPIO_ACTIVE_LOW>;
+          interrupts = <&gpio6 13 IRQ_TYPE_EDGE_RISING>;
+        };
+    };
+
+    i2c-1 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        magnetometer@2e {
+          compatible = "yamaha,yas539";
+          reg = <0x2e>;
+          vdd-supply = <&ldo1_reg>;
+        };
+    };

Documentation/devicetree/bindings/trivial-devices.yaml

@@ -148,15 +148,13 @@ properties:
           - maxim,max31730
             # mCube 3-axis 8-bit digital accelerometer
           - mcube,mc3230
-            # MEMSIC magnetometer
-          - memsic,mmc35240
-            # MEMSIC 2-axis 8-bit digital accelerometer
-          - memsic,mxc6225
             # Measurement Specialities I2C temperature and humidity sensor
           - meas,htu21
             # Measurement Specialities I2C pressure and temperature sensor
           - meas,ms5637
             # Measurement Specialities I2C pressure and temperature sensor
+          - meas,ms5803
+            # Measurement Specialities I2C pressure and temperature sensor
           - meas,ms5805
             # Measurement Specialities I2C pressure and temperature sensor
           - meas,ms5837
@@ -166,6 +164,10 @@ properties:
           - meas,ms8607-temppressure
             # Measurement Specialties temperature sensor
           - meas,tsys01
+            # MEMSIC magnetometer
+          - memsic,mmc35240
+            # MEMSIC 2-axis 8-bit digital accelerometer
+          - memsic,mxc6225
             # Microchip differential I2C ADC, 1 Channel, 18 bit
           - microchip,mcp3421
             # Microchip differential I2C ADC, 2 Channel, 18 bit

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1260,6 +1260,8 @@ patternProperties:
     description: Shenzhen Xunlong Software CO.,Limited
   "^xylon,.*":
     description: Xylon
+  "^yamaha,.*":
+    description: Yamaha Corporation
   "^yes-optoelectronics,.*":
     description: Yes Optoelectronics Co.,Ltd.
   "^ylm,.*":

Documentation/networking/device_drivers/index.rst

@@ -15,6 +15,7 @@ Contents:
    ethernet/index
    fddi/index
    hamradio/index
+   qlogic/index
    wan/index
    wifi/index
 

Documentation/networking/device_drivers/qlogic/index.rst

@@ -0,0 +1,18 @@
+.. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+QLogic QLGE Device Drivers
+===============================================
+
+Contents:
+
+.. toctree::
+   :maxdepth: 2
+
+   qlge
+
+.. only::  subproject and html
+
+   Indices
+   =======
+
+   * :ref:`genindex`

Documentation/networking/device_drivers/qlogic/qlge.rst

@@ -0,0 +1,118 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=======================================
+QLogic QLGE 10Gb Ethernet device driver
+=======================================
+
+This driver use drgn and devlink for debugging.
+
+Dump kernel data structures in drgn
+-----------------------------------
+
+To dump kernel data structures, the following Python script can be used
+in drgn:
+
+.. code-block:: python
+
+	def align(x, a):
+	    """the alignment a should be a power of 2
+	    """
+	    mask = a - 1
+	    return (x+ mask) & ~mask
+
+	def struct_size(struct_type):
+	    struct_str = "struct {}".format(struct_type)
+	    return sizeof(Object(prog, struct_str, address=0x0))
+
+	def netdev_priv(netdevice):
+	    NETDEV_ALIGN = 32
+	    return netdevice.value_() + align(struct_size("net_device"), NETDEV_ALIGN)
+
+	name = 'xxx'
+	qlge_device = None
+	netdevices = prog['init_net'].dev_base_head.address_of_()
+	for netdevice in list_for_each_entry("struct net_device", netdevices, "dev_list"):
+	    if netdevice.name.string_().decode('ascii') == name:
+	        print(netdevice.name)
+
+	ql_adapter = Object(prog, "struct ql_adapter", address=netdev_priv(qlge_device))
+
+The struct ql_adapter will be printed in drgn as follows,
+
+    >>> ql_adapter
+    (struct ql_adapter){
+            .ricb = (struct ricb){
+                    .base_cq = (u8)0,
+                    .flags = (u8)120,
+                    .mask = (__le16)26637,
+                    .hash_cq_id = (u8 [1024]){ 172, 142, 255, 255 },
+                    .ipv6_hash_key = (__le32 [10]){},
+                    .ipv4_hash_key = (__le32 [4]){},
+            },
+            .flags = (unsigned long)0,
+            .wol = (u32)0,
+            .nic_stats = (struct nic_stats){
+                    .tx_pkts = (u64)0,
+                    .tx_bytes = (u64)0,
+                    .tx_mcast_pkts = (u64)0,
+                    .tx_bcast_pkts = (u64)0,
+                    .tx_ucast_pkts = (u64)0,
+                    .tx_ctl_pkts = (u64)0,
+                    .tx_pause_pkts = (u64)0,
+                    ...
+            },
+            .active_vlans = (unsigned long [64]){
+                    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 52780853100545, 18446744073709551615,
+                    18446619461681283072, 0, 42949673024, 2147483647,
+            },
+            .rx_ring = (struct rx_ring [17]){
+                    {
+                            .cqicb = (struct cqicb){
+                                    .msix_vect = (u8)0,
+                                    .reserved1 = (u8)0,
+                                    .reserved2 = (u8)0,
+                                    .flags = (u8)0,
+                                    .len = (__le16)0,
+                                    .rid = (__le16)0,
+                                    ...
+                            },
+                            .cq_base = (void *)0x0,
+                            .cq_base_dma = (dma_addr_t)0,
+                    }
+                    ...
+            }
+    }
+
+coredump via devlink
+--------------------
+
+
+And the coredump obtained via devlink in json format looks like,
+
+.. code:: shell
+
+	$ devlink health dump show DEVICE reporter coredump -p -j
+	{
+	    "Core Registers": {
+	        "segment": 1,
+	        "values": [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ]
+	    },
+	    "Test Logic Regs": {
+	        "segment": 2,
+	        "values": [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ]
+	    },
+	    "RMII Registers": {
+	        "segment": 3,
+	        "values": [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ]
+	    },
+	    ...
+	    "Sem Registers": {
+	        "segment": 50,
+	        "values": [ 0,0,0,0 ]
+	    }
+	}
+
+When the module parameter qlge_force_coredump is set to be true, the MPI
+RISC reset before coredumping. So coredumping will much longer since
+devlink tool has to wait for 5 secs for the resetting to be
+finished.

MAINTAINERS

@@ -14590,6 +14590,12 @@ L:	netdev@vger.kernel.org
 S:	Supported
 F:	drivers/staging/qlge/
 
+QLOGIC QLGE 10Gb ETHERNET DRIVER
+M:	Coiby Xu <coiby.xu@gmail.com>
+L:	netdev@vger.kernel.org
+S:	Maintained
+F:	Documentation/networking/device_drivers/qlogic/qlge.rst
+
 QM1D1B0004 MEDIA DRIVER
 M:	Akihiro Tsukada <tskd08@gmail.com>
 L:	linux-media@vger.kernel.org

drivers/hid/hid-sensor-custom.c

@@ -4,6 +4,7 @@
  * Copyright (c) 2015, Intel Corporation.
  */
 
+#include <linux/ctype.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -21,6 +22,7 @@
 #define HID_CUSTOM_TOTAL_ATTRS		(HID_CUSTOM_MAX_CORE_ATTRS + 1)
 #define HID_CUSTOM_FIFO_SIZE		4096
 #define HID_CUSTOM_MAX_FEATURE_BYTES	64
+#define HID_SENSOR_USAGE_LENGTH (4 + 1)
 
 struct hid_sensor_custom_field {
 	int report_id;
@@ -50,6 +52,7 @@ struct hid_sensor_custom {
 	struct kfifo data_fifo;
 	unsigned long misc_opened;
 	wait_queue_head_t wait;
+	struct platform_device *custom_pdev;
 };
 
 /* Header for each sample to user space via dev interface */
@@ -746,11 +749,130 @@ static void hid_sensor_custom_dev_if_remove(struct hid_sensor_custom
 
 }
 
+/* luid defined in FW (e.g. ISH).  Maybe used to identify sensor. */
+static const char *const known_sensor_luid[] = { "020B000000000000" };
+
+static int get_luid_table_index(unsigned char *usage_str)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(known_sensor_luid); i++) {
+		if (!strncmp(usage_str, known_sensor_luid[i],
+			     strlen(known_sensor_luid[i])))
+			return i;
+	}
+
+	return -ENODEV;
+}
+
+static int get_known_custom_sensor_index(struct hid_sensor_hub_device *hsdev)
+{
+	struct hid_sensor_hub_attribute_info sensor_manufacturer = { 0 };
+	struct hid_sensor_hub_attribute_info sensor_luid_info = { 0 };
+	int report_size;
+	int ret;
+	static u16 w_buf[HID_CUSTOM_MAX_FEATURE_BYTES];
+	static char buf[HID_CUSTOM_MAX_FEATURE_BYTES];
+	int i;
+
+	memset(w_buf, 0, sizeof(w_buf));
+	memset(buf, 0, sizeof(buf));
+
+	/* get manufacturer info */
+	ret = sensor_hub_input_get_attribute_info(hsdev,
+			HID_FEATURE_REPORT, hsdev->usage,
+			HID_USAGE_SENSOR_PROP_MANUFACTURER, &sensor_manufacturer);
+	if (ret < 0)
+		return ret;
+
+	report_size =
+		sensor_hub_get_feature(hsdev, sensor_manufacturer.report_id,
+				       sensor_manufacturer.index, sizeof(w_buf),
+				       w_buf);
+	if (report_size <= 0) {
+		hid_err(hsdev->hdev,
+			"Failed to get sensor manufacturer info %d\n",
+			report_size);
+		return -ENODEV;
+	}
+
+	/* convert from wide char to char */
+	for (i = 0; i < ARRAY_SIZE(buf) - 1 && w_buf[i]; i++)
+		buf[i] = (char)w_buf[i];
+
+	/* ensure it's ISH sensor */
+	if (strncmp(buf, "INTEL", strlen("INTEL")))
+		return -ENODEV;
+
+	memset(w_buf, 0, sizeof(w_buf));
+	memset(buf, 0, sizeof(buf));
+
+	/* get real usage id */
+	ret = sensor_hub_input_get_attribute_info(hsdev,
+			HID_FEATURE_REPORT, hsdev->usage,
+			HID_USAGE_SENSOR_PROP_SERIAL_NUM, &sensor_luid_info);
+	if (ret < 0)
+		return ret;
+
+	report_size = sensor_hub_get_feature(hsdev, sensor_luid_info.report_id,
+					     sensor_luid_info.index, sizeof(w_buf),
+					     w_buf);
+	if (report_size <= 0) {
+		hid_err(hsdev->hdev, "Failed to get real usage info %d\n",
+			report_size);
+		return -ENODEV;
+	}
+
+	/* convert from wide char to char */
+	for (i = 0; i < ARRAY_SIZE(buf) - 1 && w_buf[i]; i++)
+		buf[i] = (char)w_buf[i];
+
+	if (strlen(buf) != strlen(known_sensor_luid[0]) + 5) {
+		hid_err(hsdev->hdev,
+			"%s luid length not match %zu != (%zu + 5)\n", __func__,
+			strlen(buf), strlen(known_sensor_luid[0]));
+		return -ENODEV;
+	}
+
+	/* get table index with luid (not matching 'LUID: ' in luid) */
+	return get_luid_table_index(&buf[5]);
+}
+
+static struct platform_device *
+hid_sensor_register_platform_device(struct platform_device *pdev,
+				    struct hid_sensor_hub_device *hsdev,
+				    int index)
+{
+	char real_usage[HID_SENSOR_USAGE_LENGTH] = { 0 };
+	struct platform_device *custom_pdev;
+	const char *dev_name;
+	char *c;
+
+	/* copy real usage id */
+	memcpy(real_usage, known_sensor_luid[index], 4);
+
+	/* usage id are all lowcase */
+	for (c = real_usage; *c != '\0'; c++)
+		*c = tolower(*c);
+
+	/* HID-SENSOR-INT-REAL_USAGE_ID */
+	dev_name = kasprintf(GFP_KERNEL, "HID-SENSOR-INT-%s", real_usage);
+	if (!dev_name)
+		return ERR_PTR(-ENOMEM);
+
+	custom_pdev = platform_device_register_data(pdev->dev.parent, dev_name,
+						    PLATFORM_DEVID_NONE, hsdev,
+						    sizeof(*hsdev));
+	kfree(dev_name);
+	return custom_pdev;
+}
+
 static int hid_sensor_custom_probe(struct platform_device *pdev)
 {
 	struct hid_sensor_custom *sensor_inst;
 	struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
 	int ret;
+	int index;
 
 	sensor_inst = devm_kzalloc(&pdev->dev, sizeof(*sensor_inst),
 				   GFP_KERNEL);
@@ -764,6 +886,22 @@ static int hid_sensor_custom_probe(struct platform_device *pdev)
 	sensor_inst->pdev = pdev;
 	mutex_init(&sensor_inst->mutex);
 	platform_set_drvdata(pdev, sensor_inst);
+
+	index = get_known_custom_sensor_index(hsdev);
+	if (index >= 0 && index < ARRAY_SIZE(known_sensor_luid)) {
+		sensor_inst->custom_pdev =
+			hid_sensor_register_platform_device(pdev, hsdev, index);
+
+		ret = PTR_ERR_OR_ZERO(sensor_inst->custom_pdev);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"register_platform_device failed\n");
+			return ret;
+		}
+
+		return 0;
+	}
+
 	ret = sensor_hub_register_callback(hsdev, hsdev->usage,
 					   &sensor_inst->callbacks);
 	if (ret < 0) {
@@ -802,6 +940,11 @@ static int hid_sensor_custom_remove(struct platform_device *pdev)
 	struct hid_sensor_custom *sensor_inst = platform_get_drvdata(pdev);
 	struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
 
+	if (sensor_inst->custom_pdev) {
+		platform_device_unregister(sensor_inst->custom_pdev);
+		return 0;
+	}
+
 	hid_sensor_custom_dev_if_remove(sensor_inst);
 	hid_sensor_custom_remove_attributes(sensor_inst);
 	sysfs_remove_group(&sensor_inst->pdev->dev.kobj,

drivers/iio/accel/hid-sensor-accel-3d.c

@@ -23,6 +23,7 @@ enum accel_3d_channel {
 	ACCEL_3D_CHANNEL_MAX,
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP ACCEL_3D_CHANNEL_MAX
 struct accel_3d_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
@@ -75,7 +76,7 @@ static const struct iio_chan_spec accel_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
 	},
-	IIO_CHAN_SOFT_TIMESTAMP(3)
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
 };
 
 /* Channel definitions */
@@ -110,7 +111,8 @@ static const struct iio_chan_spec gravity_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP),
 };
 
 /* Adjust channel real bits based on report descriptor */

drivers/iio/accel/kxcjk-1013.c

@@ -14,6 +14,7 @@
 #include <linux/acpi.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
@@ -133,6 +134,7 @@ enum kx_acpi_type {
 };
 
 struct kxcjk1013_data {
+	struct regulator_bulk_data regulators[2];
 	struct i2c_client *client;
 	struct iio_trigger *dready_trig;
 	struct iio_trigger *motion_trig;
@@ -1300,6 +1302,13 @@ static const char *kxcjk1013_match_acpi_device(struct device *dev,
 	return dev_name(dev);
 }
 
+static void kxcjk1013_disable_regulators(void *d)
+{
+	struct kxcjk1013_data *data = d;
+
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
+}
+
 static int kxcjk1013_probe(struct i2c_client *client,
 			   const struct i2c_device_id *id)
 {
@@ -1330,6 +1339,29 @@ static int kxcjk1013_probe(struct i2c_client *client,
 			return ret;
 	}
 
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(data->regulators),
+				      data->regulators);
+	if (ret)
+		return dev_err_probe(&client->dev, ret, "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev, kxcjk1013_disable_regulators, data);
+	if (ret)
+		return ret;
+
+	/*
+	 * A typical delay of 10ms is required for powering up
+	 * according to the data sheets of supported chips.
+	 * Hence double that to play safe.
+	 */
+	msleep(20);
+
 	if (id) {
 		data->chipset = (enum kx_chipset)(id->driver_data);
 		name = id->name;

drivers/iio/adc/Kconfig

@@ -1228,8 +1228,15 @@ config XILINX_XADC
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	help
-	  Say yes here to have support for the Xilinx XADC. The driver does support
+	  Say yes here to have support for the Xilinx 7 Series XADC or
-	  both the ZYNQ interface to the XADC as well as the AXI-XADC interface.
+	  UltraScale/UltraScale+ System Management Wizard.
+
+	  For the 7 Series the driver does support both the ZYNQ interface
+	  to the XADC as well as the AXI-XADC interface.
+
+	  The driver also support the Xilinx System Management Wizard IP core
+	  that can be used to access the System Monitor ADC on the Xilinx
+	  UltraScale and UltraScale+ FPGAs.
 
 	  The driver can also be build as a module. If so, the module will be called
 	  xilinx-xadc.

drivers/iio/adc/ab8500-gpadc.c

@@ -1108,10 +1108,14 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 		return gpadc->irq_sw;
 	}
 
-	gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
+	if (is_ab8500(gpadc->ab8500)) {
-	if (gpadc->irq_hw < 0) {
+		gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
-		dev_err(dev, "failed to get platform hw_conv_end irq\n");
+		if (gpadc->irq_hw < 0) {
-		return gpadc->irq_hw;
+			dev_err(dev, "failed to get platform hw_conv_end irq\n");
+			return gpadc->irq_hw;
+		}
+	} else {
+		gpadc->irq_hw = 0;
 	}
 
 	/* Initialize completion used to notify completion of conversion */
@@ -1128,14 +1132,16 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = devm_request_threaded_irq(dev, gpadc->irq_hw, NULL,
+	if (gpadc->irq_hw) {
-		ab8500_bm_gpadcconvend_handler,	IRQF_NO_SUSPEND | IRQF_ONESHOT,
+		ret = devm_request_threaded_irq(dev, gpadc->irq_hw, NULL,
-		"ab8500-gpadc-hw", gpadc);
+			ab8500_bm_gpadcconvend_handler,	IRQF_NO_SUSPEND | IRQF_ONESHOT,
-	if (ret < 0) {
+			"ab8500-gpadc-hw", gpadc);
-		dev_err(dev,
+		if (ret < 0) {
-			"Failed to request hw conversion irq: %d\n",
+			dev_err(dev,
-			gpadc->irq_hw);
+				"Failed to request hw conversion irq: %d\n",
-		return ret;
+				gpadc->irq_hw);
+			return ret;
+		}
 	}
 
 	/* The VTVout LDO used to power the AB8500 GPADC */

drivers/iio/adc/ad7476.c

@@ -67,6 +67,7 @@ enum ad7476_supported_device_ids {
 	ID_ADS7866,
 	ID_ADS7867,
 	ID_ADS7868,
+	ID_LTC2314_14,
 };
 
 static void ad7091_convst(struct ad7476_state *st)
@@ -250,6 +251,10 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
 		.channel[0] = ADS786X_CHAN(8),
 		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
 	},
+	[ID_LTC2314_14] = {
+		.channel[0] = AD7940_CHAN(14),
+		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+	},
 };
 
 static const struct iio_info ad7476_info = {
@@ -365,6 +370,7 @@ static const struct spi_device_id ad7476_id[] = {
 	{"ads7866", ID_ADS7866},
 	{"ads7867", ID_ADS7867},
 	{"ads7868", ID_ADS7868},
+	{"ltc2314-14", ID_LTC2314_14},
 	{}
 };
 MODULE_DEVICE_TABLE(spi, ad7476_id);

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

@@ -10,6 +10,7 @@
  * Author: Linus Walleij <linus.walleij@linaro.org>
  */
 
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/module.h>
@@ -21,8 +22,6 @@
 #include <linux/interrupt.h>
 #include <linux/regulator/consumer.h>
 
-#include "qcom-vadc-common.h"
-
 /*
  * Definitions for the "user processor" registers lifted from the v3.4
  * Qualcomm tree. Their kernel has two out-of-tree drivers for the ADC:

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

@@ -7,6 +7,7 @@
 #include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/err.h>
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
@@ -14,12 +15,12 @@
 #include <linux/math64.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
 #include <dt-bindings/iio/qcom,spmi-vadc.h>
-#include "qcom-vadc-common.h"
 
 #define ADC5_USR_REVISION1			0x0
 #define ADC5_USR_STATUS1			0x8
@@ -154,18 +155,6 @@ struct adc5_chip {
 	const struct adc5_data	*data;
 };
 
-static const struct vadc_prescale_ratio adc5_prescale_ratios[] = {
-	{.num =  1, .den =  1},
-	{.num =  1, .den =  3},
-	{.num =  1, .den =  4},
-	{.num =  1, .den =  6},
-	{.num =  1, .den = 20},
-	{.num =  1, .den =  8},
-	{.num = 10, .den = 81},
-	{.num =  1, .den = 10},
-	{.num =  1, .den = 16}
-};
-
 static int adc5_read(struct adc5_chip *adc, u16 offset, u8 *data, int len)
 {
 	return regmap_bulk_read(adc->regmap, adc->base + offset, data, len);
@@ -181,55 +170,6 @@ static int adc5_masked_write(struct adc5_chip *adc, u16 offset, u8 mask, u8 val)
 	return regmap_update_bits(adc->regmap, adc->base + offset, mask, val);
 }
 
-static int adc5_prescaling_from_dt(u32 num, u32 den)
-{
-	unsigned int pre;
-
-	for (pre = 0; pre < ARRAY_SIZE(adc5_prescale_ratios); pre++)
-		if (adc5_prescale_ratios[pre].num == num &&
-		    adc5_prescale_ratios[pre].den == den)
-			break;
-
-	if (pre == ARRAY_SIZE(adc5_prescale_ratios))
-		return -EINVAL;
-
-	return pre;
-}
-
-static int adc5_hw_settle_time_from_dt(u32 value,
-					const unsigned int *hw_settle)
-{
-	unsigned int i;
-
-	for (i = 0; i < VADC_HW_SETTLE_SAMPLES_MAX; i++) {
-		if (value == hw_settle[i])
-			return i;
-	}
-
-	return -EINVAL;
-}
-
-static int adc5_avg_samples_from_dt(u32 value)
-{
-	if (!is_power_of_2(value) || value > ADC5_AVG_SAMPLES_MAX)
-		return -EINVAL;
-
-	return __ffs(value);
-}
-
-static int adc5_decimation_from_dt(u32 value,
-					const unsigned int *decimation)
-{
-	unsigned int i;
-
-	for (i = 0; i < ADC5_DECIMATION_SAMPLES_MAX; i++) {
-		if (value == decimation[i])
-			return i;
-	}
-
-	return -EINVAL;
-}
-
 static int adc5_read_voltage_data(struct adc5_chip *adc, u16 *data)
 {
 	int ret;
@@ -511,7 +451,7 @@ static int adc_read_raw_common(struct iio_dev *indio_dev,
 			return ret;
 
 		ret = qcom_adc5_hw_scale(prop->scale_fn_type,
-			&adc5_prescale_ratios[prop->prescale],
+			prop->prescale,
 			adc->data,
 			adc_code_volt, val);
 		if (ret)
@@ -717,7 +657,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 
 	ret = of_property_read_u32(node, "qcom,decimation", &value);
 	if (!ret) {
-		ret = adc5_decimation_from_dt(value, data->decimation);
+		ret = qcom_adc5_decimation_from_dt(value, data->decimation);
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid decimation %d\n",
 				chan, value);
@@ -730,7 +670,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 
 	ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2);
 	if (!ret) {
-		ret = adc5_prescaling_from_dt(varr[0], varr[1]);
+		ret = qcom_adc5_prescaling_from_dt(varr[0], varr[1]);
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid pre-scaling <%d %d>\n",
 				chan, varr[0], varr[1]);
@@ -759,11 +699,9 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 		if ((dig_version[0] >= ADC5_HW_SETTLE_DIFF_MINOR &&
 			dig_version[1] >= ADC5_HW_SETTLE_DIFF_MAJOR) ||
 			adc->data->info == &adc7_info)
-			ret = adc5_hw_settle_time_from_dt(value,
+			ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_2);
-							data->hw_settle_2);
 		else
-			ret = adc5_hw_settle_time_from_dt(value,
+			ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_1);
-							data->hw_settle_1);
 
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid hw-settle-time %d us\n",
@@ -777,7 +715,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 
 	ret = of_property_read_u32(node, "qcom,avg-samples", &value);
 	if (!ret) {
-		ret = adc5_avg_samples_from_dt(value);
+		ret = qcom_adc5_avg_samples_from_dt(value);
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid avg-samples %d\n",
 				chan, value);
@@ -870,8 +808,6 @@ static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node)
 	struct adc5_channel_prop prop, *chan_props;
 	struct device_node *child;
 	unsigned int index = 0;
-	const struct of_device_id *id;
-	const struct adc5_data *data;
 	int ret;
 
 	adc->nchannels = of_get_available_child_count(node);
@@ -890,24 +826,21 @@ static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node)
 
 	chan_props = adc->chan_props;
 	iio_chan = adc->iio_chans;
-	id = of_match_node(adc5_match_table, node);
+	adc->data = of_device_get_match_data(adc->dev);
-	if (id)
+	if (!adc->data)
-		data = id->data;
+		adc->data = &adc5_data_pmic;
-	else
-		data = &adc5_data_pmic;
-	adc->data = data;
 
 	for_each_available_child_of_node(node, child) {
-		ret = adc5_get_dt_channel_data(adc, &prop, child, data);
+		ret = adc5_get_dt_channel_data(adc, &prop, child, adc->data);
 		if (ret) {
 			of_node_put(child);
 			return ret;
 		}
 
 		prop.scale_fn_type =
-			data->adc_chans[prop.channel].scale_fn_type;
+			adc->data->adc_chans[prop.channel].scale_fn_type;
 		*chan_props = prop;
-		adc_chan = &data->adc_chans[prop.channel];
+		adc_chan = &adc->data->adc_chans[prop.channel];
 
 		iio_chan->channel = prop.channel;
 		iio_chan->datasheet_name = prop.datasheet_name;

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

@@ -7,6 +7,7 @@
 #include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/err.h>
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
@@ -20,8 +21,6 @@
 
 #include <dt-bindings/iio/qcom,spmi-vadc.h>
 
-#include "qcom-vadc-common.h"
-
 /* VADC register and bit definitions */
 #define VADC_REVISION2				0x1
 #define VADC_REVISION2_SUPPORTED_VADC		1

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

@@ -2,50 +2,61 @@
 #include <linux/bug.h>
 #include <linux/kernel.h>
 #include <linux/bitops.h>
+#include <linux/fixp-arith.h>
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/math64.h>
 #include <linux/log2.h>
 #include <linux/err.h>
 #include <linux/module.h>
 #include <linux/units.h>
 
-#include "qcom-vadc-common.h"
+/**
+ * struct vadc_map_pt - Map the graph representation for ADC channel
+ * @x: Represent the ADC digitized code.
+ * @y: Represent the physical data which can be temperature, voltage,
+ *     resistance.
+ */
+struct vadc_map_pt {
+	s32 x;
+	s32 y;
+};
 
 /* Voltage to temperature */
 static const struct vadc_map_pt adcmap_100k_104ef_104fb[] = {
-	{1758,	-40},
+	{1758,	-40000 },
-	{1742,	-35},
+	{1742,	-35000 },
-	{1719,	-30},
+	{1719,	-30000 },
-	{1691,	-25},
+	{1691,	-25000 },
-	{1654,	-20},
+	{1654,	-20000 },
-	{1608,	-15},
+	{1608,	-15000 },
-	{1551,	-10},
+	{1551,	-10000 },
-	{1483,	-5},
+	{1483,	-5000 },
-	{1404,	0},
+	{1404,	0 },
-	{1315,	5},
+	{1315,	5000 },
-	{1218,	10},
+	{1218,	10000 },
-	{1114,	15},
+	{1114,	15000 },
-	{1007,	20},
+	{1007,	20000 },
-	{900,	25},
+	{900,	25000 },
-	{795,	30},
+	{795,	30000 },
-	{696,	35},
+	{696,	35000 },
-	{605,	40},
+	{605,	40000 },
-	{522,	45},
+	{522,	45000 },
-	{448,	50},
+	{448,	50000 },
-	{383,	55},
+	{383,	55000 },
-	{327,	60},
+	{327,	60000 },
-	{278,	65},
+	{278,	65000 },
-	{237,	70},
+	{237,	70000 },
-	{202,	75},
+	{202,	75000 },
-	{172,	80},
+	{172,	80000 },
-	{146,	85},
+	{146,	85000 },
-	{125,	90},
+	{125,	90000 },
-	{107,	95},
+	{107,	95000 },
-	{92,	100},
+	{92,	100000 },
-	{79,	105},
+	{79,	105000 },
-	{68,	110},
+	{68,	110000 },
-	{59,	115},
+	{59,	115000 },
-	{51,	120},
+	{51,	120000 },
-	{44,	125}
+	{44,	125000 }
 };
 
 /*
@@ -90,18 +101,18 @@ static const struct vadc_map_pt adcmap_100k_104ef_104fb_1875_vref[] = {
 };
 
 static const struct vadc_map_pt adcmap7_die_temp[] = {
-	{ 433700, 1967},
+	{ 857300, 160000 },
-	{ 473100, 1964},
+	{ 820100, 140000 },
-	{ 512400, 1957},
+	{ 782500, 120000 },
-	{ 551500, 1949},
+	{ 744600, 100000 },
-	{ 590500, 1940},
+	{ 706400, 80000 },
-	{ 629300, 1930},
+	{ 667900, 60000 },
-	{ 667900, 1921},
+	{ 629300, 40000 },
-	{ 706400, 1910},
+	{ 590500, 20000 },
-	{ 744600, 1896},
+	{ 551500, 0 },
-	{ 782500, 1878},
+	{ 512400, -20000 },
-	{ 820100, 1859},
+	{ 473100, -40000 },
-	{ 857300, 0},
+	{ 433700, -60000 },
 };
 
 /*
@@ -278,6 +289,18 @@ static const struct vadc_map_pt adcmap7_100k[] = {
 	{ 2420, 130048 }
 };
 
+static const struct vadc_prescale_ratio adc5_prescale_ratios[] = {
+	{.num =  1, .den =  1},
+	{.num =  1, .den =  3},
+	{.num =  1, .den =  4},
+	{.num =  1, .den =  6},
+	{.num =  1, .den = 20},
+	{.num =  1, .den =  8},
+	{.num = 10, .den = 81},
+	{.num =  1, .den = 10},
+	{.num =  1, .den = 16}
+};
+
 static int qcom_vadc_scale_hw_calib_volt(
 				const struct vadc_prescale_ratio *prescale,
 				const struct adc5_data *data,
@@ -323,43 +346,23 @@ static struct qcom_adc5_scale_type scale_adc5_fn[] = {
 static int qcom_vadc_map_voltage_temp(const struct vadc_map_pt *pts,
 				      u32 tablesize, s32 input, int *output)
 {
-	bool descending = 1;
 	u32 i = 0;
 
 	if (!pts)
 		return -EINVAL;
 
-	/* Check if table is descending or ascending */
+	while (i < tablesize && pts[i].x > input)
-	if (tablesize > 1) {
-		if (pts[0].x < pts[1].x)
-			descending = 0;
-	}
-
-	while (i < tablesize) {
-		if ((descending) && (pts[i].x < input)) {
-			/* table entry is less than measured*/
-			 /* value and table is descending, stop */
-			break;
-		} else if ((!descending) &&
-				(pts[i].x > input)) {
-			/* table entry is greater than measured*/
-			/*value and table is ascending, stop */
-			break;
-		}
 		i++;
-	}
 
 	if (i == 0) {
 		*output = pts[0].y;
 	} else if (i == tablesize) {
 		*output = pts[tablesize - 1].y;
 	} else {
-		/* result is between search_index and search_index-1 */
 		/* interpolate linearly */
-		*output = (((s32)((pts[i].y - pts[i - 1].y) *
+		*output = fixp_linear_interpolate(pts[i - 1].x, pts[i - 1].y,
-			(input - pts[i - 1].x)) /
+						  pts[i].x, pts[i].y,
-			(pts[i].x - pts[i - 1].x)) +
+						  input);
-			pts[i - 1].y);
 	}
 
 	return 0;
@@ -415,8 +418,6 @@ static int qcom_vadc_scale_therm(const struct vadc_linear_graph *calib_graph,
 	if (ret)
 		return ret;
 
-	*result_mdec *= 1000;
-
 	return 0;
 }
 
@@ -563,33 +564,13 @@ static int qcom_vadc7_scale_hw_calib_die_temp(
 				u16 adc_code, int *result_mdec)
 {
 
-	int voltage, vtemp0, temp, i;
+	int voltage;
 
 	voltage = qcom_vadc_scale_code_voltage_factor(adc_code,
 				prescale, data, 1);
 
-	if (adcmap7_die_temp[0].x > voltage) {
+	return qcom_vadc_map_voltage_temp(adcmap7_die_temp, ARRAY_SIZE(adcmap7_die_temp),
-		*result_mdec = DIE_TEMP_ADC7_SCALE_1;
+			voltage, result_mdec);
-		return 0;
-	}
-
-	if (adcmap7_die_temp[ARRAY_SIZE(adcmap7_die_temp) - 1].x <= voltage) {
-		*result_mdec = DIE_TEMP_ADC7_MAX;
-		return 0;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(adcmap7_die_temp); i++)
-		if (adcmap7_die_temp[i].x > voltage)
-			break;
-
-	vtemp0 = adcmap7_die_temp[i - 1].x;
-	voltage = voltage - vtemp0;
-	temp = div64_s64(voltage * DIE_TEMP_ADC7_SCALE_FACTOR,
-		adcmap7_die_temp[i - 1].y);
-	temp += DIE_TEMP_ADC7_SCALE_1 + (DIE_TEMP_ADC7_SCALE_2 * (i - 1));
-	*result_mdec = temp;
-
-	return 0;
 }
 
 static int qcom_vadc_scale_hw_smb_temp(
@@ -647,10 +628,12 @@ int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
 EXPORT_SYMBOL(qcom_vadc_scale);
 
 int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype,
-		    const struct vadc_prescale_ratio *prescale,
+		    unsigned int prescale_ratio,
 		    const struct adc5_data *data,
 		    u16 adc_code, int *result)
 {
+	const struct vadc_prescale_ratio *prescale = &adc5_prescale_ratios[prescale_ratio];
+
 	if (!(scaletype >= SCALE_HW_CALIB_DEFAULT &&
 		scaletype < SCALE_HW_CALIB_INVALID)) {
 		pr_err("Invalid scale type %d\n", scaletype);
@@ -662,6 +645,58 @@ int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype,
 }
 EXPORT_SYMBOL(qcom_adc5_hw_scale);
 
+int qcom_adc5_prescaling_from_dt(u32 num, u32 den)
+{
+	unsigned int pre;
+
+	for (pre = 0; pre < ARRAY_SIZE(adc5_prescale_ratios); pre++)
+		if (adc5_prescale_ratios[pre].num == num &&
+		    adc5_prescale_ratios[pre].den == den)
+			break;
+
+	if (pre == ARRAY_SIZE(adc5_prescale_ratios))
+		return -EINVAL;
+
+	return pre;
+}
+EXPORT_SYMBOL(qcom_adc5_prescaling_from_dt);
+
+int qcom_adc5_hw_settle_time_from_dt(u32 value,
+				     const unsigned int *hw_settle)
+{
+	unsigned int i;
+
+	for (i = 0; i < VADC_HW_SETTLE_SAMPLES_MAX; i++) {
+		if (value == hw_settle[i])
+			return i;
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(qcom_adc5_hw_settle_time_from_dt);
+
+int qcom_adc5_avg_samples_from_dt(u32 value)
+{
+	if (!is_power_of_2(value) || value > ADC5_AVG_SAMPLES_MAX)
+		return -EINVAL;
+
+	return __ffs(value);
+}
+EXPORT_SYMBOL(qcom_adc5_avg_samples_from_dt);
+
+int qcom_adc5_decimation_from_dt(u32 value, const unsigned int *decimation)
+{
+	unsigned int i;
+
+	for (i = 0; i < ADC5_DECIMATION_SAMPLES_MAX; i++) {
+		if (value == decimation[i])
+			return i;
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(qcom_adc5_decimation_from_dt);
+
 int qcom_vadc_decimation_from_dt(u32 value)
 {
 	if (!is_power_of_2(value) || value < VADC_DECIMATION_MIN ||

drivers/iio/adc/sc27xx_adc.c

@@ -307,7 +307,7 @@ static int sc27xx_adc_convert_volt(struct sc27xx_adc_data *data, int channel,
 
 	sc27xx_adc_volt_ratio(data, channel, scale, &numerator, &denominator);
 
-	return (volt * denominator + numerator / 2) / numerator;
+	return DIV_ROUND_CLOSEST(volt * denominator, numerator);
 }
 
 static int sc27xx_adc_read_processed(struct sc27xx_adc_data *data,

drivers/iio/adc/stm32-adc-core.c

@@ -535,20 +535,16 @@ static int stm32_adc_core_hw_start(struct device *dev)
 		goto err_switches_dis;
 	}
 
-	if (priv->bclk) {
+	ret = clk_prepare_enable(priv->bclk);
-		ret = clk_prepare_enable(priv->bclk);
+	if (ret < 0) {
-		if (ret < 0) {
+		dev_err(dev, "bus clk enable failed\n");
-			dev_err(dev, "bus clk enable failed\n");
+		goto err_regulator_disable;
-			goto err_regulator_disable;
-		}
 	}
 
-	if (priv->aclk) {
+	ret = clk_prepare_enable(priv->aclk);
-		ret = clk_prepare_enable(priv->aclk);
+	if (ret < 0) {
-		if (ret < 0) {
+		dev_err(dev, "adc clk enable failed\n");
-			dev_err(dev, "adc clk enable failed\n");
+		goto err_bclk_disable;
-			goto err_bclk_disable;
-		}
 	}
 
 	writel_relaxed(priv->ccr_bak, priv->common.base + priv->cfg->regs->ccr);
@@ -556,8 +552,7 @@ static int stm32_adc_core_hw_start(struct device *dev)
 	return 0;
 
 err_bclk_disable:
-	if (priv->bclk)
+	clk_disable_unprepare(priv->bclk);
-		clk_disable_unprepare(priv->bclk);
 err_regulator_disable:
 	regulator_disable(priv->vref);
 err_switches_dis:
@@ -575,10 +570,8 @@ static void stm32_adc_core_hw_stop(struct device *dev)
 
 	/* Backup CCR that may be lost (depends on power state to achieve) */
 	priv->ccr_bak = readl_relaxed(priv->common.base + priv->cfg->regs->ccr);
-	if (priv->aclk)
+	clk_disable_unprepare(priv->aclk);
-		clk_disable_unprepare(priv->aclk);
+	clk_disable_unprepare(priv->bclk);
-	if (priv->bclk)
-		clk_disable_unprepare(priv->bclk);
 	regulator_disable(priv->vref);
 	stm32_adc_core_switches_supply_dis(priv);
 	regulator_disable(priv->vdda);

drivers/iio/adc/stm32-adc.c

@@ -546,8 +546,7 @@ static int stm32_adc_hw_stop(struct device *dev)
 	if (adc->cfg->unprepare)
 		adc->cfg->unprepare(indio_dev);
 
-	if (adc->clk)
+	clk_disable_unprepare(adc->clk);
-		clk_disable_unprepare(adc->clk);
 
 	return 0;
 }
@@ -558,11 +557,9 @@ static int stm32_adc_hw_start(struct device *dev)
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	int ret;
 
-	if (adc->clk) {
+	ret = clk_prepare_enable(adc->clk);
-		ret = clk_prepare_enable(adc->clk);
+	if (ret)
-		if (ret)
+		return ret;
-			return ret;
-	}
 
 	stm32_adc_set_res(adc);
 
@@ -575,8 +572,7 @@ static int stm32_adc_hw_start(struct device *dev)
 	return 0;
 
 err_clk_dis:
-	if (adc->clk)
+	clk_disable_unprepare(adc->clk);
-		clk_disable_unprepare(adc->clk);
 
 	return ret;
 }

drivers/iio/adc/stm32-dfsdm-core.c

@@ -117,8 +117,7 @@ static void stm32_dfsdm_clk_disable_unprepare(struct stm32_dfsdm *dfsdm)
 {
 	struct dfsdm_priv *priv = to_stm32_dfsdm_priv(dfsdm);
 
-	if (priv->aclk)
+	clk_disable_unprepare(priv->aclk);
-		clk_disable_unprepare(priv->aclk);
 	clk_disable_unprepare(priv->clk);
 }
 

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

@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/overflow.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
@@ -92,7 +93,12 @@ static const unsigned int XADC_ZYNQ_UNMASK_TIMEOUT = 500;
 #define XADC_AXI_REG_GIER		0x5c
 #define XADC_AXI_REG_IPISR		0x60
 #define XADC_AXI_REG_IPIER		0x68
-#define XADC_AXI_ADC_REG_OFFSET		0x200
+
+/* 7 Series */
+#define XADC_7S_AXI_ADC_REG_OFFSET	0x200
+
+/* UltraScale */
+#define XADC_US_AXI_ADC_REG_OFFSET	0x400
 
 #define XADC_AXI_RESET_MAGIC		0xa
 #define XADC_AXI_GIER_ENABLE		BIT(31)
@@ -447,6 +453,12 @@ static const struct xadc_ops xadc_zynq_ops = {
 	.get_dclk_rate = xadc_zynq_get_dclk_rate,
 	.interrupt_handler = xadc_zynq_interrupt_handler,
 	.update_alarm = xadc_zynq_update_alarm,
+	.type = XADC_TYPE_S7,
+};
+
+static const unsigned int xadc_axi_reg_offsets[] = {
+	[XADC_TYPE_S7] = XADC_7S_AXI_ADC_REG_OFFSET,
+	[XADC_TYPE_US] = XADC_US_AXI_ADC_REG_OFFSET,
 };
 
 static int xadc_axi_read_adc_reg(struct xadc *xadc, unsigned int reg,
@@ -454,7 +466,8 @@ static int xadc_axi_read_adc_reg(struct xadc *xadc, unsigned int reg,
 {
 	uint32_t val32;
 
-	xadc_read_reg(xadc, XADC_AXI_ADC_REG_OFFSET + reg * 4, &val32);
+	xadc_read_reg(xadc, xadc_axi_reg_offsets[xadc->ops->type] + reg * 4,
+		&val32);
 	*val = val32 & 0xffff;
 
 	return 0;
@@ -463,7 +476,8 @@ static int xadc_axi_read_adc_reg(struct xadc *xadc, unsigned int reg,
 static int xadc_axi_write_adc_reg(struct xadc *xadc, unsigned int reg,
 	uint16_t val)
 {
-	xadc_write_reg(xadc, XADC_AXI_ADC_REG_OFFSET + reg * 4, val);
+	xadc_write_reg(xadc, xadc_axi_reg_offsets[xadc->ops->type] + reg * 4,
+		val);
 
 	return 0;
 }
@@ -541,7 +555,7 @@ static unsigned long xadc_axi_get_dclk(struct xadc *xadc)
 	return clk_get_rate(xadc->clk);
 }
 
-static const struct xadc_ops xadc_axi_ops = {
+static const struct xadc_ops xadc_7s_axi_ops = {
 	.read = xadc_axi_read_adc_reg,
 	.write = xadc_axi_write_adc_reg,
 	.setup = xadc_axi_setup,
@@ -549,6 +563,18 @@ static const struct xadc_ops xadc_axi_ops = {
 	.update_alarm = xadc_axi_update_alarm,
 	.interrupt_handler = xadc_axi_interrupt_handler,
 	.flags = XADC_FLAGS_BUFFERED,
+	.type = XADC_TYPE_S7,
+};
+
+static const struct xadc_ops xadc_us_axi_ops = {
+	.read = xadc_axi_read_adc_reg,
+	.write = xadc_axi_write_adc_reg,
+	.setup = xadc_axi_setup,
+	.get_dclk_rate = xadc_axi_get_dclk,
+	.update_alarm = xadc_axi_update_alarm,
+	.interrupt_handler = xadc_axi_interrupt_handler,
+	.flags = XADC_FLAGS_BUFFERED,
+	.type = XADC_TYPE_US,
 };
 
 static int _xadc_update_adc_reg(struct xadc *xadc, unsigned int reg,
@@ -585,15 +611,22 @@ static int xadc_update_scan_mode(struct iio_dev *indio_dev,
 	const unsigned long *mask)
 {
 	struct xadc *xadc = iio_priv(indio_dev);
-	unsigned int n;
+	size_t new_size, n;
+	void *data;
 
 	n = bitmap_weight(mask, indio_dev->masklength);
 
-	kfree(xadc->data);
+	if (check_mul_overflow(n, sizeof(*xadc->data), &new_size))
-	xadc->data = kcalloc(n, sizeof(*xadc->data), GFP_KERNEL);
-	if (!xadc->data)
 		return -ENOMEM;
 
+	data = devm_krealloc(indio_dev->dev.parent, xadc->data,
+			     new_size, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	memset(data, 0, new_size);
+	xadc->data = data;
+
 	return 0;
 }
 
@@ -705,11 +738,12 @@ static const struct iio_trigger_ops xadc_trigger_ops = {
 static struct iio_trigger *xadc_alloc_trigger(struct iio_dev *indio_dev,
 	const char *name)
 {
+	struct device *dev = indio_dev->dev.parent;
 	struct iio_trigger *trig;
 	int ret;
 
-	trig = iio_trigger_alloc("%s%d-%s", indio_dev->name,
+	trig = devm_iio_trigger_alloc(dev, "%s%d-%s", indio_dev->name,
-				indio_dev->id, name);
+				      indio_dev->id, name);
 	if (trig == NULL)
 		return ERR_PTR(-ENOMEM);
 
@@ -717,21 +751,26 @@ static struct iio_trigger *xadc_alloc_trigger(struct iio_dev *indio_dev,
 	trig->ops = &xadc_trigger_ops;
 	iio_trigger_set_drvdata(trig, iio_priv(indio_dev));
 
-	ret = iio_trigger_register(trig);
+	ret = devm_iio_trigger_register(dev, trig);
 	if (ret)
-		goto error_free_trig;
+		return ERR_PTR(ret);
 
 	return trig;
-
-error_free_trig:
-	iio_trigger_free(trig);
-	return ERR_PTR(ret);
 }
 
 static int xadc_power_adc_b(struct xadc *xadc, unsigned int seq_mode)
 {
 	uint16_t val;
 
+	/*
+	 * As per datasheet the power-down bits are don't care in the
+	 * UltraScale, but as per reality setting the power-down bit for the
+	 * non-existing ADC-B powers down the main ADC, so just return and don't
+	 * do anything.
+	 */
+	if (xadc->ops->type == XADC_TYPE_US)
+		return 0;
+
 	/* Powerdown the ADC-B when it is not needed. */
 	switch (seq_mode) {
 	case XADC_CONF1_SEQ_SIMULTANEOUS:
@@ -751,6 +790,10 @@ static int xadc_get_seq_mode(struct xadc *xadc, unsigned long scan_mode)
 {
 	unsigned int aux_scan_mode = scan_mode >> 16;
 
+	/* UltraScale has only one ADC and supports only continuous mode */
+	if (xadc->ops->type == XADC_TYPE_US)
+		return XADC_CONF1_SEQ_CONTINUOUS;
+
 	if (xadc->external_mux_mode == XADC_EXTERNAL_MUX_DUAL)
 		return XADC_CONF1_SEQ_SIMULTANEOUS;
 
@@ -863,6 +906,7 @@ static int xadc_read_raw(struct iio_dev *indio_dev,
 	struct iio_chan_spec const *chan, int *val, int *val2, long info)
 {
 	struct xadc *xadc = iio_priv(indio_dev);
+	unsigned int bits = chan->scan_type.realbits;
 	uint16_t val16;
 	int ret;
 
@@ -874,17 +918,17 @@ static int xadc_read_raw(struct iio_dev *indio_dev,
 		if (ret < 0)
 			return ret;
 
-		val16 >>= 4;
+		val16 >>= chan->scan_type.shift;
 		if (chan->scan_type.sign == 'u')
 			*val = val16;
 		else
-			*val = sign_extend32(val16, 11);
+			*val = sign_extend32(val16, bits - 1);
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		switch (chan->type) {
 		case IIO_VOLTAGE:
-			/* V = (val * 3.0) / 4096 */
+			/* V = (val * 3.0) / 2**bits */
 			switch (chan->address) {
 			case XADC_REG_VCCINT:
 			case XADC_REG_VCCAUX:
@@ -900,19 +944,19 @@ static int xadc_read_raw(struct iio_dev *indio_dev,
 				*val = 1000;
 				break;
 			}
-			*val2 = 12;
+			*val2 = chan->scan_type.realbits;
 			return IIO_VAL_FRACTIONAL_LOG2;
 		case IIO_TEMP:
-			/* Temp in C = (val * 503.975) / 4096 - 273.15 */
+			/* Temp in C = (val * 503.975) / 2**bits - 273.15 */
 			*val = 503975;
-			*val2 = 12;
+			*val2 = bits;
 			return IIO_VAL_FRACTIONAL_LOG2;
 		default:
 			return -EINVAL;
 		}
 	case IIO_CHAN_INFO_OFFSET:
 		/* Only the temperature channel has an offset */
-		*val = -((273150 << 12) / 503975);
+		*val = -((273150 << bits) / 503975);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		ret = xadc_read_samplerate(xadc);
@@ -1001,7 +1045,7 @@ static const struct iio_event_spec xadc_voltage_events[] = {
 	},
 };
 
-#define XADC_CHAN_TEMP(_chan, _scan_index, _addr) { \
+#define XADC_CHAN_TEMP(_chan, _scan_index, _addr, _bits) { \
 	.type = IIO_TEMP, \
 	.indexed = 1, \
 	.channel = (_chan), \
@@ -1015,14 +1059,14 @@ static const struct iio_event_spec xadc_voltage_events[] = {
 	.scan_index = (_scan_index), \
 	.scan_type = { \
 		.sign = 'u', \
-		.realbits = 12, \
+		.realbits = (_bits), \
 		.storagebits = 16, \
-		.shift = 4, \
+		.shift = 16 - (_bits), \
 		.endianness = IIO_CPU, \
 	}, \
 }
 
-#define XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, _ext, _alarm) { \
+#define XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, _bits, _ext, _alarm) { \
 	.type = IIO_VOLTAGE, \
 	.indexed = 1, \
 	.channel = (_chan), \
@@ -1035,41 +1079,82 @@ static const struct iio_event_spec xadc_voltage_events[] = {
 	.scan_index = (_scan_index), \
 	.scan_type = { \
 		.sign = ((_addr) == XADC_REG_VREFN) ? 's' : 'u', \
-		.realbits = 12, \
+		.realbits = (_bits), \
 		.storagebits = 16, \
-		.shift = 4, \
+		.shift = 16 - (_bits), \
 		.endianness = IIO_CPU, \
 	}, \
 	.extend_name = _ext, \
 }
 
-static const struct iio_chan_spec xadc_channels[] = {
+/* 7 Series */
-	XADC_CHAN_TEMP(0, 8, XADC_REG_TEMP),
+#define XADC_7S_CHAN_TEMP(_chan, _scan_index, _addr) \
-	XADC_CHAN_VOLTAGE(0, 9, XADC_REG_VCCINT, "vccint", true),
+	XADC_CHAN_TEMP(_chan, _scan_index, _addr, 12)
-	XADC_CHAN_VOLTAGE(1, 10, XADC_REG_VCCAUX, "vccaux", true),
+#define XADC_7S_CHAN_VOLTAGE(_chan, _scan_index, _addr, _ext, _alarm) \
-	XADC_CHAN_VOLTAGE(2, 14, XADC_REG_VCCBRAM, "vccbram", true),
+	XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, 12, _ext, _alarm)
-	XADC_CHAN_VOLTAGE(3, 5, XADC_REG_VCCPINT, "vccpint", true),
+
-	XADC_CHAN_VOLTAGE(4, 6, XADC_REG_VCCPAUX, "vccpaux", true),
+static const struct iio_chan_spec xadc_7s_channels[] = {
-	XADC_CHAN_VOLTAGE(5, 7, XADC_REG_VCCO_DDR, "vccoddr", true),
+	XADC_7S_CHAN_TEMP(0, 8, XADC_REG_TEMP),
-	XADC_CHAN_VOLTAGE(6, 12, XADC_REG_VREFP, "vrefp", false),
+	XADC_7S_CHAN_VOLTAGE(0, 9, XADC_REG_VCCINT, "vccint", true),
-	XADC_CHAN_VOLTAGE(7, 13, XADC_REG_VREFN, "vrefn", false),
+	XADC_7S_CHAN_VOLTAGE(1, 10, XADC_REG_VCCAUX, "vccaux", true),
-	XADC_CHAN_VOLTAGE(8, 11, XADC_REG_VPVN, NULL, false),
+	XADC_7S_CHAN_VOLTAGE(2, 14, XADC_REG_VCCBRAM, "vccbram", true),
-	XADC_CHAN_VOLTAGE(9, 16, XADC_REG_VAUX(0), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(3, 5, XADC_REG_VCCPINT, "vccpint", true),
-	XADC_CHAN_VOLTAGE(10, 17, XADC_REG_VAUX(1), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(4, 6, XADC_REG_VCCPAUX, "vccpaux", true),
-	XADC_CHAN_VOLTAGE(11, 18, XADC_REG_VAUX(2), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(5, 7, XADC_REG_VCCO_DDR, "vccoddr", true),
-	XADC_CHAN_VOLTAGE(12, 19, XADC_REG_VAUX(3), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(6, 12, XADC_REG_VREFP, "vrefp", false),
-	XADC_CHAN_VOLTAGE(13, 20, XADC_REG_VAUX(4), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(7, 13, XADC_REG_VREFN, "vrefn", false),
-	XADC_CHAN_VOLTAGE(14, 21, XADC_REG_VAUX(5), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(8, 11, XADC_REG_VPVN, NULL, false),
-	XADC_CHAN_VOLTAGE(15, 22, XADC_REG_VAUX(6), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(9, 16, XADC_REG_VAUX(0), NULL, false),
-	XADC_CHAN_VOLTAGE(16, 23, XADC_REG_VAUX(7), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(10, 17, XADC_REG_VAUX(1), NULL, false),
-	XADC_CHAN_VOLTAGE(17, 24, XADC_REG_VAUX(8), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(11, 18, XADC_REG_VAUX(2), NULL, false),
-	XADC_CHAN_VOLTAGE(18, 25, XADC_REG_VAUX(9), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(12, 19, XADC_REG_VAUX(3), NULL, false),
-	XADC_CHAN_VOLTAGE(19, 26, XADC_REG_VAUX(10), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(13, 20, XADC_REG_VAUX(4), NULL, false),
-	XADC_CHAN_VOLTAGE(20, 27, XADC_REG_VAUX(11), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(14, 21, XADC_REG_VAUX(5), NULL, false),
-	XADC_CHAN_VOLTAGE(21, 28, XADC_REG_VAUX(12), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(15, 22, XADC_REG_VAUX(6), NULL, false),
-	XADC_CHAN_VOLTAGE(22, 29, XADC_REG_VAUX(13), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(16, 23, XADC_REG_VAUX(7), NULL, false),
-	XADC_CHAN_VOLTAGE(23, 30, XADC_REG_VAUX(14), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(17, 24, XADC_REG_VAUX(8), NULL, false),
-	XADC_CHAN_VOLTAGE(24, 31, XADC_REG_VAUX(15), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(18, 25, XADC_REG_VAUX(9), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(19, 26, XADC_REG_VAUX(10), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(20, 27, XADC_REG_VAUX(11), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(21, 28, XADC_REG_VAUX(12), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(22, 29, XADC_REG_VAUX(13), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(23, 30, XADC_REG_VAUX(14), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(24, 31, XADC_REG_VAUX(15), NULL, false),
+};
+
+/* UltraScale */
+#define XADC_US_CHAN_TEMP(_chan, _scan_index, _addr) \
+	XADC_CHAN_TEMP(_chan, _scan_index, _addr, 10)
+#define XADC_US_CHAN_VOLTAGE(_chan, _scan_index, _addr, _ext, _alarm) \
+	XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, 10, _ext, _alarm)
+
+static const struct iio_chan_spec xadc_us_channels[] = {
+	XADC_US_CHAN_TEMP(0, 8, XADC_REG_TEMP),
+	XADC_US_CHAN_VOLTAGE(0, 9, XADC_REG_VCCINT, "vccint", true),
+	XADC_US_CHAN_VOLTAGE(1, 10, XADC_REG_VCCAUX, "vccaux", true),
+	XADC_US_CHAN_VOLTAGE(2, 14, XADC_REG_VCCBRAM, "vccbram", true),
+	XADC_US_CHAN_VOLTAGE(3, 5, XADC_REG_VCCPINT, "vccpsintlp", true),
+	XADC_US_CHAN_VOLTAGE(4, 6, XADC_REG_VCCPAUX, "vccpsintfp", true),
+	XADC_US_CHAN_VOLTAGE(5, 7, XADC_REG_VCCO_DDR, "vccpsaux", true),
+	XADC_US_CHAN_VOLTAGE(6, 12, XADC_REG_VREFP, "vrefp", false),
+	XADC_US_CHAN_VOLTAGE(7, 13, XADC_REG_VREFN, "vrefn", false),
+	XADC_US_CHAN_VOLTAGE(8, 11, XADC_REG_VPVN, NULL, false),
+	XADC_US_CHAN_VOLTAGE(9, 16, XADC_REG_VAUX(0), NULL, false),
+	XADC_US_CHAN_VOLTAGE(10, 17, XADC_REG_VAUX(1), NULL, false),
+	XADC_US_CHAN_VOLTAGE(11, 18, XADC_REG_VAUX(2), NULL, false),
+	XADC_US_CHAN_VOLTAGE(12, 19, XADC_REG_VAUX(3), NULL, false),
+	XADC_US_CHAN_VOLTAGE(13, 20, XADC_REG_VAUX(4), NULL, false),
+	XADC_US_CHAN_VOLTAGE(14, 21, XADC_REG_VAUX(5), NULL, false),
+	XADC_US_CHAN_VOLTAGE(15, 22, XADC_REG_VAUX(6), NULL, false),
+	XADC_US_CHAN_VOLTAGE(16, 23, XADC_REG_VAUX(7), NULL, false),
+	XADC_US_CHAN_VOLTAGE(17, 24, XADC_REG_VAUX(8), NULL, false),
+	XADC_US_CHAN_VOLTAGE(18, 25, XADC_REG_VAUX(9), NULL, false),
+	XADC_US_CHAN_VOLTAGE(19, 26, XADC_REG_VAUX(10), NULL, false),
+	XADC_US_CHAN_VOLTAGE(20, 27, XADC_REG_VAUX(11), NULL, false),
+	XADC_US_CHAN_VOLTAGE(21, 28, XADC_REG_VAUX(12), NULL, false),
+	XADC_US_CHAN_VOLTAGE(22, 29, XADC_REG_VAUX(13), NULL, false),
+	XADC_US_CHAN_VOLTAGE(23, 30, XADC_REG_VAUX(14), NULL, false),
+	XADC_US_CHAN_VOLTAGE(24, 31, XADC_REG_VAUX(15), NULL, false),
 };
 
 static const struct iio_info xadc_info = {
@@ -1083,8 +1168,16 @@ static const struct iio_info xadc_info = {
 };
 
 static const struct of_device_id xadc_of_match_table[] = {
-	{ .compatible = "xlnx,zynq-xadc-1.00.a", (void *)&xadc_zynq_ops },
+	{
-	{ .compatible = "xlnx,axi-xadc-1.00.a", (void *)&xadc_axi_ops },
+		.compatible = "xlnx,zynq-xadc-1.00.a",
+		.data = &xadc_zynq_ops
+	}, {
+		.compatible = "xlnx,axi-xadc-1.00.a",
+		.data = &xadc_7s_axi_ops
+	}, {
+		.compatible = "xlnx,system-management-wiz-1.3",
+		.data = &xadc_us_axi_ops
+	},
 	{ },
 };
 MODULE_DEVICE_TABLE(of, xadc_of_match_table);
@@ -1094,8 +1187,10 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 {
 	struct device *dev = indio_dev->dev.parent;
 	struct xadc *xadc = iio_priv(indio_dev);
+	const struct iio_chan_spec *channel_templates;
 	struct iio_chan_spec *channels, *chan;
 	struct device_node *chan_node, *child;
+	unsigned int max_channels;
 	unsigned int num_channels;
 	const char *external_mux;
 	u32 ext_mux_chan;
@@ -1136,9 +1231,15 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 
 		*conf |= XADC_CONF0_MUX | XADC_CONF0_CHAN(ext_mux_chan);
 	}
-
+	if (xadc->ops->type == XADC_TYPE_S7) {
-	channels = devm_kmemdup(dev, xadc_channels,
+		channel_templates = xadc_7s_channels;
-				sizeof(xadc_channels), GFP_KERNEL);
+		max_channels = ARRAY_SIZE(xadc_7s_channels);
+	} else {
+		channel_templates = xadc_us_channels;
+		max_channels = ARRAY_SIZE(xadc_us_channels);
+	}
+	channels = devm_kmemdup(dev, channel_templates,
+				sizeof(channels[0]) * max_channels, GFP_KERNEL);
 	if (!channels)
 		return -ENOMEM;
 
@@ -1148,7 +1249,7 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 	chan_node = of_get_child_by_name(np, "xlnx,channels");
 	if (chan_node) {
 		for_each_child_of_node(chan_node, child) {
-			if (num_channels >= ARRAY_SIZE(xadc_channels)) {
+			if (num_channels >= max_channels) {
 				of_node_put(child);
 				break;
 			}
@@ -1184,8 +1285,28 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 	return 0;
 }
 
+static const char * const xadc_type_names[] = {
+	[XADC_TYPE_S7] = "xadc",
+	[XADC_TYPE_US] = "xilinx-system-monitor",
+};
+
+static void xadc_clk_disable_unprepare(void *data)
+{
+	struct clk *clk = data;
+
+	clk_disable_unprepare(clk);
+}
+
+static void xadc_cancel_delayed_work(void *data)
+{
+	struct delayed_work *work = data;
+
+	cancel_delayed_work_sync(work);
+}
+
 static int xadc_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	const struct of_device_id *id;
 	struct iio_dev *indio_dev;
 	unsigned int bipolar_mask;
@@ -1195,10 +1316,10 @@ static int xadc_probe(struct platform_device *pdev)
 	int irq;
 	int i;
 
-	if (!pdev->dev.of_node)
+	if (!dev->of_node)
 		return -ENODEV;
 
-	id = of_match_node(xadc_of_match_table, pdev->dev.of_node);
+	id = of_match_node(xadc_of_match_table, dev->of_node);
 	if (!id)
 		return -EINVAL;
 
@@ -1206,7 +1327,7 @@ static int xadc_probe(struct platform_device *pdev)
 	if (irq <= 0)
 		return -ENXIO;
 
-	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*xadc));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*xadc));
 	if (!indio_dev)
 		return -ENOMEM;
 
@@ -1222,43 +1343,44 @@ static int xadc_probe(struct platform_device *pdev)
 	if (IS_ERR(xadc->base))
 		return PTR_ERR(xadc->base);
 
-	indio_dev->name = "xadc";
+	indio_dev->name = xadc_type_names[xadc->ops->type];
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &xadc_info;
 
-	ret = xadc_parse_dt(indio_dev, pdev->dev.of_node, &conf0);
+	ret = xadc_parse_dt(indio_dev, dev->of_node, &conf0);
 	if (ret)
 		return ret;
 
 	if (xadc->ops->flags & XADC_FLAGS_BUFFERED) {
-		ret = iio_triggered_buffer_setup(indio_dev,
+		ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
-			&iio_pollfunc_store_time, &xadc_trigger_handler,
+						      &iio_pollfunc_store_time,
-			&xadc_buffer_ops);
+						      &xadc_trigger_handler,
+						      &xadc_buffer_ops);
 		if (ret)
 			return ret;
 
 		xadc->convst_trigger = xadc_alloc_trigger(indio_dev, "convst");
-		if (IS_ERR(xadc->convst_trigger)) {
+		if (IS_ERR(xadc->convst_trigger))
-			ret = PTR_ERR(xadc->convst_trigger);
+			return PTR_ERR(xadc->convst_trigger);
-			goto err_triggered_buffer_cleanup;
+
-		}
 		xadc->samplerate_trigger = xadc_alloc_trigger(indio_dev,
 			"samplerate");
-		if (IS_ERR(xadc->samplerate_trigger)) {
+		if (IS_ERR(xadc->samplerate_trigger))
-			ret = PTR_ERR(xadc->samplerate_trigger);
+			return PTR_ERR(xadc->samplerate_trigger);
-			goto err_free_convst_trigger;
-		}
 	}
 
-	xadc->clk = devm_clk_get(&pdev->dev, NULL);
+	xadc->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(xadc->clk)) {
+	if (IS_ERR(xadc->clk))
-		ret = PTR_ERR(xadc->clk);
+		return PTR_ERR(xadc->clk);
-		goto err_free_samplerate_trigger;
-	}
 
 	ret = clk_prepare_enable(xadc->clk);
 	if (ret)
-		goto err_free_samplerate_trigger;
+		return ret;
+
+	ret = devm_add_action_or_reset(dev,
+				       xadc_clk_disable_unprepare, xadc->clk);
+	if (ret)
+		return ret;
 
 	/*
 	 * Make sure not to exceed the maximum samplerate since otherwise the
@@ -1267,22 +1389,28 @@ static int xadc_probe(struct platform_device *pdev)
 	if (xadc->ops->flags & XADC_FLAGS_BUFFERED) {
 		ret = xadc_read_samplerate(xadc);
 		if (ret < 0)
-			goto err_free_samplerate_trigger;
+			return ret;
+
 		if (ret > XADC_MAX_SAMPLERATE) {
 			ret = xadc_write_samplerate(xadc, XADC_MAX_SAMPLERATE);
 			if (ret < 0)
-				goto err_free_samplerate_trigger;
+				return ret;
 		}
 	}
 
-	ret = request_irq(xadc->irq, xadc->ops->interrupt_handler, 0,
+	ret = devm_request_irq(dev, xadc->irq, xadc->ops->interrupt_handler, 0,
-			dev_name(&pdev->dev), indio_dev);
+			       dev_name(dev), indio_dev);
 	if (ret)
-		goto err_clk_disable_unprepare;
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, xadc_cancel_delayed_work,
+				       &xadc->zynq_unmask_work);
+	if (ret)
+		return ret;
 
 	ret = xadc->ops->setup(pdev, indio_dev, xadc->irq);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	for (i = 0; i < 16; i++)
 		xadc_read_adc_reg(xadc, XADC_REG_THRESHOLD(i),
@@ -1290,7 +1418,7 @@ static int xadc_probe(struct platform_device *pdev)
 
 	ret = xadc_write_adc_reg(xadc, XADC_REG_CONF0, conf0);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	bipolar_mask = 0;
 	for (i = 0; i < indio_dev->num_channels; i++) {
@@ -1300,17 +1428,18 @@ static int xadc_probe(struct platform_device *pdev)
 
 	ret = xadc_write_adc_reg(xadc, XADC_REG_INPUT_MODE(0), bipolar_mask);
 	if (ret)
-		goto err_free_irq;
+		return ret;
+
 	ret = xadc_write_adc_reg(xadc, XADC_REG_INPUT_MODE(1),
 		bipolar_mask >> 16);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	/* Disable all alarms */
 	ret = xadc_update_adc_reg(xadc, XADC_REG_CONF1, XADC_CONF1_ALARM_MASK,
 				  XADC_CONF1_ALARM_MASK);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	/* Set thresholds to min/max */
 	for (i = 0; i < 16; i++) {
@@ -1325,60 +1454,17 @@ static int xadc_probe(struct platform_device *pdev)
 		ret = xadc_write_adc_reg(xadc, XADC_REG_THRESHOLD(i),
 			xadc->threshold[i]);
 		if (ret)
-			goto err_free_irq;
+			return ret;
 	}
 
 	/* Go to non-buffered mode */
 	xadc_postdisable(indio_dev);
 
-	ret = iio_device_register(indio_dev);
+	return devm_iio_device_register(dev, indio_dev);
-	if (ret)
-		goto err_free_irq;
-
-	platform_set_drvdata(pdev, indio_dev);
-
-	return 0;
-
-err_free_irq:
-	free_irq(xadc->irq, indio_dev);
-	cancel_delayed_work_sync(&xadc->zynq_unmask_work);
-err_clk_disable_unprepare:
-	clk_disable_unprepare(xadc->clk);
-err_free_samplerate_trigger:
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
-		iio_trigger_free(xadc->samplerate_trigger);
-err_free_convst_trigger:
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
-		iio_trigger_free(xadc->convst_trigger);
-err_triggered_buffer_cleanup:
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
-		iio_triggered_buffer_cleanup(indio_dev);
-
-	return ret;
-}
-
-static int xadc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct xadc *xadc = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED) {
-		iio_trigger_free(xadc->samplerate_trigger);
-		iio_trigger_free(xadc->convst_trigger);
-		iio_triggered_buffer_cleanup(indio_dev);
-	}
-	free_irq(xadc->irq, indio_dev);
-	cancel_delayed_work_sync(&xadc->zynq_unmask_work);
-	clk_disable_unprepare(xadc->clk);
-	kfree(xadc->data);
-
-	return 0;
 }
 
 static struct platform_driver xadc_driver = {
 	.probe = xadc_probe,
-	.remove = xadc_remove,
 	.driver = {
 		.name = "xadc",
 		.of_match_table = xadc_of_match_table,

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

@@ -155,9 +155,6 @@ err_out:
 	return ret;
 }
 
-/* Register value is msb aligned, the lower 4 bits are ignored */
-#define XADC_THRESHOLD_VALUE_SHIFT 4
-
 int xadc_read_event_value(struct iio_dev *indio_dev,
 	const struct iio_chan_spec *chan, enum iio_event_type type,
 	enum iio_event_direction dir, enum iio_event_info info,
@@ -177,7 +174,8 @@ int xadc_read_event_value(struct iio_dev *indio_dev,
 		return -EINVAL;
 	}
 
-	*val >>= XADC_THRESHOLD_VALUE_SHIFT;
+	/* MSB aligned */
+	*val >>= 16 - chan->scan_type.realbits;
 
 	return IIO_VAL_INT;
 }
@@ -191,7 +189,8 @@ int xadc_write_event_value(struct iio_dev *indio_dev,
 	struct xadc *xadc = iio_priv(indio_dev);
 	int ret = 0;
 
-	val <<= XADC_THRESHOLD_VALUE_SHIFT;
+	/* MSB aligned */
+	val <<= 16 - chan->scan_type.realbits;
 
 	if (val < 0 || val > 0xffff)
 		return -EINVAL;

drivers/iio/adc/xilinx-xadc.h

@@ -70,6 +70,11 @@ struct xadc {
 	int irq;
 };
 
+enum xadc_type {
+	XADC_TYPE_S7, /* Series 7 */
+	XADC_TYPE_US, /* UltraScale and UltraScale+ */
+};
+
 struct xadc_ops {
 	int (*read)(struct xadc *xadc, unsigned int reg, uint16_t *val);
 	int (*write)(struct xadc *xadc, unsigned int reg, uint16_t val);
@@ -80,6 +85,7 @@ struct xadc_ops {
 	irqreturn_t (*interrupt_handler)(int irq, void *devid);
 
 	unsigned int flags;
+	enum xadc_type type;
 };
 
 static inline int _xadc_read_adc_reg(struct xadc *xadc, unsigned int reg,

drivers/iio/chemical/bme680_core.c

@@ -479,7 +479,7 @@ static u8 bme680_calc_heater_res(struct bme680_data *data, u16 temp)
 	var4 = (var3 / (calib->res_heat_range + 4));
 	var5 = 131 * calib->res_heat_val + 65536;
 	heatr_res_x100 = ((var4 / var5) - 250) * 34;
-	heatr_res = (heatr_res_x100 + 50) / 100;
+	heatr_res = DIV_ROUND_CLOSEST(heatr_res_x100, 100);
 
 	return heatr_res;
 }

drivers/iio/chemical/pms7003.c

@@ -282,7 +282,7 @@ static int pms7003_probe(struct serdev_device *serdev)
 	state->serdev = serdev;
 	indio_dev->info = &pms7003_info;
 	indio_dev->name = PMS7003_DRIVER_NAME;
-	indio_dev->channels = pms7003_channels,
+	indio_dev->channels = pms7003_channels;
 	indio_dev->num_channels = ARRAY_SIZE(pms7003_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->available_scan_masks = pms7003_scan_masks;

drivers/iio/common/hid-sensors/hid-sensor-attributes.c

@@ -71,6 +71,8 @@ static struct {
 	{HID_USAGE_SENSOR_TEMPERATURE, HID_USAGE_SENSOR_UNITS_DEGREES, 1000, 0},
 
 	{HID_USAGE_SENSOR_HUMIDITY, 0, 1000, 0},
+	{HID_USAGE_SENSOR_HINGE, 0, 0, 17453293},
+	{HID_USAGE_SENSOR_HINGE, HID_USAGE_SENSOR_UNITS_DEGREES, 0, 17453293},
 };
 
 static void simple_div(int dividend, int divisor, int *whole,

drivers/iio/common/ms_sensors/ms_sensors_i2c.c

@@ -488,24 +488,20 @@ int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data,
 EXPORT_SYMBOL(ms_sensors_ht_read_humidity);
 
 /**
- * ms_sensors_tp_crc_valid() - CRC check function for
+ * ms_sensors_tp_crc4() - Calculate PROM CRC for
  *     Temperature and pressure devices.
  *     This function is only used when reading PROM coefficients
  *
  * @prom:	pointer to PROM coefficients array
- * @len:	length of PROM coefficients array
  *
- * Return: True if CRC is ok.
+ * Return: CRC.
  */
-static bool ms_sensors_tp_crc_valid(u16 *prom, u8 len)
+static u8 ms_sensors_tp_crc4(u16 *prom)
 {
 	unsigned int cnt, n_bit;
-	u16 n_rem = 0x0000, crc_read = prom[0], crc = (*prom & 0xF000) >> 12;
+	u16 n_rem = 0x0000;
 
-	prom[len - 1] = 0;
+	for (cnt = 0; cnt < MS_SENSORS_TP_PROM_WORDS_NB * 2; cnt++) {
-	prom[0] &= 0x0FFF;      /* Clear the CRC computation part */
-
-	for (cnt = 0; cnt < len * 2; cnt++) {
 		if (cnt % 2 == 1)
 			n_rem ^= prom[cnt >> 1] & 0x00FF;
 		else
@@ -518,10 +514,55 @@ static bool ms_sensors_tp_crc_valid(u16 *prom, u8 len)
 				n_rem <<= 1;
 		}
 	}
-	n_rem >>= 12;
-	prom[0] = crc_read;
 
-	return n_rem == crc;
+	return n_rem >> 12;
+}
+
+/**
+ * ms_sensors_tp_crc_valid_112() - CRC check function for
+ *     Temperature and pressure devices for 112bit PROM.
+ *     This function is only used when reading PROM coefficients
+ *
+ * @prom:	pointer to PROM coefficients array
+ *
+ * Return: True if CRC is ok.
+ */
+static bool ms_sensors_tp_crc_valid_112(u16 *prom)
+{
+	u16 w0 = prom[0], crc_read = (w0 & 0xF000) >> 12;
+	u8 crc;
+
+	prom[0] &= 0x0FFF;      /* Clear the CRC computation part */
+	prom[MS_SENSORS_TP_PROM_WORDS_NB - 1] = 0;
+
+	crc = ms_sensors_tp_crc4(prom);
+
+	prom[0] = w0;
+
+	return crc == crc_read;
+}
+
+/**
+ * ms_sensors_tp_crc_valid_128() - CRC check function for
+ *     Temperature and pressure devices for 128bit PROM.
+ *     This function is only used when reading PROM coefficients
+ *
+ * @prom:	pointer to PROM coefficients array
+ *
+ * Return: True if CRC is ok.
+ */
+static bool ms_sensors_tp_crc_valid_128(u16 *prom)
+{
+	u16 w7 = prom[7], crc_read = w7 & 0x000F;
+	u8 crc;
+
+	prom[7] &= 0xFF00;      /* Clear the CRC and LSB part */
+
+	crc = ms_sensors_tp_crc4(prom);
+
+	prom[7] = w7;
+
+	return crc == crc_read;
 }
 
 /**
@@ -536,8 +577,9 @@ static bool ms_sensors_tp_crc_valid(u16 *prom, u8 len)
 int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data)
 {
 	int i, ret;
+	bool valid;
 
-	for (i = 0; i < MS_SENSORS_TP_PROM_WORDS_NB; i++) {
+	for (i = 0; i < dev_data->hw->prom_len; i++) {
 		ret = ms_sensors_read_prom_word(
 			dev_data->client,
 			MS_SENSORS_TP_PROM_READ + (i << 1),
@@ -547,8 +589,12 @@ int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data)
 			return ret;
 	}
 
-	if (!ms_sensors_tp_crc_valid(dev_data->prom,
+	if (dev_data->hw->prom_len == 8)
-				     MS_SENSORS_TP_PROM_WORDS_NB + 1)) {
+		valid = ms_sensors_tp_crc_valid_128(dev_data->prom);
+	else
+		valid = ms_sensors_tp_crc_valid_112(dev_data->prom);
+
+	if (!valid) {
 		dev_err(&dev_data->client->dev,
 			"Calibration coefficients crc check error\n");
 		return -ENODEV;

drivers/iio/common/ms_sensors/ms_sensors_i2c.h

@@ -11,7 +11,7 @@
 #include <linux/i2c.h>
 #include <linux/mutex.h>
 
-#define MS_SENSORS_TP_PROM_WORDS_NB		7
+#define MS_SENSORS_TP_PROM_WORDS_NB		8
 
 /**
  * struct ms_ht_dev - Humidity/Temperature sensor device structure
@@ -25,6 +25,16 @@ struct ms_ht_dev {
 	u8 res_index;
 };
 
+/**
+ * struct ms_hw_data - Temperature/Pressure sensor hardware data
+ * @prom_len:		number of words in the PROM
+ * @max_res_index:	maximum sensor resolution index
+ */
+struct ms_tp_hw_data {
+	u8 prom_len;
+	u8 max_res_index;
+};
+
 /**
  * struct ms_tp_dev - Temperature/Pressure sensor device structure
  * @client:	i2c client
@@ -36,7 +46,8 @@ struct ms_ht_dev {
 struct ms_tp_dev {
 	struct i2c_client *client;
 	struct mutex lock;
-	u16 prom[MS_SENSORS_TP_PROM_WORDS_NB + 1];
+	const struct ms_tp_hw_data *hw;
+	u16 prom[MS_SENSORS_TP_PROM_WORDS_NB];
 	u8 res_index;
 };
 

drivers/iio/dac/Kconfig

@@ -189,6 +189,16 @@ config AD5764
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad5764.
 
+config AD5766
+	tristate "Analog Devices AD5766/AD5767 DAC driver"
+	depends on SPI_MASTER
+	help
+	  Say yes here to build support for Analog Devices AD5766, AD5767
+	  Digital to Analog Converter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5766.
+
 config AD5770R
 	tristate "Analog Devices AD5770R IDAC driver"
 	depends on SPI_MASTER

drivers/iio/dac/Makefile

@@ -19,6 +19,7 @@ obj-$(CONFIG_AD5755) += ad5755.o
 obj-$(CONFIG_AD5755) += ad5758.o
 obj-$(CONFIG_AD5761) += ad5761.o
 obj-$(CONFIG_AD5764) += ad5764.o
+obj-$(CONFIG_AD5766) += ad5766.o
 obj-$(CONFIG_AD5770R) += ad5770r.o
 obj-$(CONFIG_AD5791) += ad5791.o
 obj-$(CONFIG_AD5686) += ad5686.o

drivers/iio/dac/ad5766.c

@@ -0,0 +1,643 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices AD5766, AD5767
+ * Digital to Analog Converters driver
+ * Copyright 2019-2020 Analog Devices Inc.
+ */
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <asm/unaligned.h>
+
+#define AD5766_UPPER_WORD_SPI_MASK		GENMASK(31, 16)
+#define AD5766_LOWER_WORD_SPI_MASK		GENMASK(15, 0)
+#define AD5766_DITHER_SOURCE_MASK(ch)		GENMASK(((2 * ch) + 1), (2 * ch))
+#define AD5766_DITHER_SOURCE(ch, source)	BIT((ch * 2) + source)
+#define AD5766_DITHER_SCALE_MASK(x)		AD5766_DITHER_SOURCE_MASK(x)
+#define AD5766_DITHER_SCALE(ch, scale)		(scale << (ch * 2))
+#define AD5766_DITHER_ENABLE_MASK(ch)		BIT(ch)
+#define AD5766_DITHER_ENABLE(ch, state)		((!state) << ch)
+#define AD5766_DITHER_INVERT_MASK(ch)		BIT(ch)
+#define AD5766_DITHER_INVERT(ch, state)		(state << ch)
+
+#define AD5766_CMD_NOP_MUX_OUT			0x00
+#define AD5766_CMD_SDO_CNTRL			0x01
+#define AD5766_CMD_WR_IN_REG(x)			(0x10 | ((x) & GENMASK(3, 0)))
+#define AD5766_CMD_WR_DAC_REG(x)		(0x20 | ((x) & GENMASK(3, 0)))
+#define AD5766_CMD_SW_LDAC			0x30
+#define AD5766_CMD_SPAN_REG			0x40
+#define AD5766_CMD_WR_PWR_DITHER		0x51
+#define AD5766_CMD_WR_DAC_REG_ALL		0x60
+#define AD5766_CMD_SW_FULL_RESET		0x70
+#define AD5766_CMD_READBACK_REG(x)		(0x80 | ((x) & GENMASK(3, 0)))
+#define AD5766_CMD_DITHER_SIG_1			0x90
+#define AD5766_CMD_DITHER_SIG_2			0xA0
+#define AD5766_CMD_INV_DITHER			0xB0
+#define AD5766_CMD_DITHER_SCALE_1		0xC0
+#define AD5766_CMD_DITHER_SCALE_2		0xD0
+
+#define AD5766_FULL_RESET_CODE			0x1234
+
+enum ad5766_type {
+	ID_AD5766,
+	ID_AD5767,
+};
+
+enum ad5766_voltage_range {
+	AD5766_VOLTAGE_RANGE_M20V_0V,
+	AD5766_VOLTAGE_RANGE_M16V_to_0V,
+	AD5766_VOLTAGE_RANGE_M10V_to_0V,
+	AD5766_VOLTAGE_RANGE_M12V_to_14V,
+	AD5766_VOLTAGE_RANGE_M16V_to_10V,
+	AD5766_VOLTAGE_RANGE_M10V_to_6V,
+	AD5766_VOLTAGE_RANGE_M5V_to_5V,
+	AD5766_VOLTAGE_RANGE_M10V_to_10V,
+};
+
+/**
+ * struct ad5766_chip_info - chip specific information
+ * @num_channels:	number of channels
+ * @channels:	        channel specification
+ */
+struct ad5766_chip_info {
+	unsigned int			num_channels;
+	const struct iio_chan_spec	*channels;
+};
+
+enum {
+	AD5766_DITHER_ENABLE,
+	AD5766_DITHER_INVERT,
+	AD5766_DITHER_SOURCE,
+};
+
+/*
+ * Dither signal can also be scaled.
+ * Available dither scale strings corresponding to "dither_scale" field in
+ * "struct ad5766_state".
+ */
+static const char * const ad5766_dither_scales[] = {
+	"1",
+	"0.75",
+	"0.5",
+	"0.25",
+};
+
+/**
+ * struct ad5766_state - driver instance specific data
+ * @spi:		SPI device
+ * @lock:		Lock used to restrict concurent access to SPI device
+ * @chip_info:		Chip model specific constants
+ * @gpio_reset:		Reset GPIO, used to reset the device
+ * @crt_range:		Current selected output range
+ * @dither_enable:	Power enable bit for each channel dither block (for
+ *			example, D15 = DAC 15,D8 = DAC 8, and D0 = DAC 0)
+ *			0 - Normal operation, 1 - Power down
+ * @dither_invert:	Inverts the dither signal applied to the selected DAC
+ *			outputs
+ * @dither_source:	Selects between 2 possible sources:
+ *			1: N0, 2: N1
+ *			Two bits are used for each channel
+ * @dither_scale:	Two bits are used for each of the 16 channels:
+ *			0: 1 SCALING, 1: 0.75 SCALING, 2: 0.5 SCALING,
+ *			3: 0.25 SCALING.
+ * @data:		SPI transfer buffers
+ */
+struct ad5766_state {
+	struct spi_device		*spi;
+	struct mutex			lock;
+	const struct ad5766_chip_info	*chip_info;
+	struct gpio_desc		*gpio_reset;
+	enum ad5766_voltage_range	crt_range;
+	u16		dither_enable;
+	u16		dither_invert;
+	u32		dither_source;
+	u32		dither_scale;
+	union {
+		u32	d32;
+		u16	w16[2];
+		u8	b8[4];
+	} data[3] ____cacheline_aligned;
+};
+
+struct ad5766_span_tbl {
+	int		min;
+	int		max;
+};
+
+static const struct ad5766_span_tbl ad5766_span_tbl[] = {
+	[AD5766_VOLTAGE_RANGE_M20V_0V] =	{-20, 0},
+	[AD5766_VOLTAGE_RANGE_M16V_to_0V] =	{-16, 0},
+	[AD5766_VOLTAGE_RANGE_M10V_to_0V] =	{-10, 0},
+	[AD5766_VOLTAGE_RANGE_M12V_to_14V] =	{-12, 14},
+	[AD5766_VOLTAGE_RANGE_M16V_to_10V] =	{-16, 10},
+	[AD5766_VOLTAGE_RANGE_M10V_to_6V] =	{-10, 6},
+	[AD5766_VOLTAGE_RANGE_M5V_to_5V] =	{-5, 5},
+	[AD5766_VOLTAGE_RANGE_M10V_to_10V] =	{-10, 10},
+};
+
+static int __ad5766_spi_read(struct ad5766_state *st, u8 dac, int *val)
+{
+	int ret;
+	struct spi_transfer xfers[] = {
+		{
+			.tx_buf = &st->data[0].d32,
+			.bits_per_word = 8,
+			.len = 3,
+			.cs_change = 1,
+		}, {
+			.tx_buf = &st->data[1].d32,
+			.rx_buf = &st->data[2].d32,
+			.bits_per_word = 8,
+			.len = 3,
+		},
+	};
+
+	st->data[0].d32 = AD5766_CMD_READBACK_REG(dac);
+	st->data[1].d32 = AD5766_CMD_NOP_MUX_OUT;
+
+	ret = spi_sync_transfer(st->spi, xfers, ARRAY_SIZE(xfers));
+	if (ret)
+		return ret;
+
+	*val = st->data[2].w16[1];
+
+	return ret;
+}
+
+static int __ad5766_spi_write(struct ad5766_state *st, u8 command, u16 data)
+{
+	st->data[0].b8[0] = command;
+	put_unaligned_be16(data, &st->data[0].b8[1]);
+
+	return spi_write(st->spi, &st->data[0].b8[0], 3);
+}
+
+static int ad5766_read(struct iio_dev *indio_dev, u8 dac, int *val)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __ad5766_spi_read(st, dac, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad5766_write(struct iio_dev *indio_dev, u8 dac, u16 data)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __ad5766_spi_write(st, AD5766_CMD_WR_DAC_REG(dac), data);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad5766_reset(struct ad5766_state *st)
+{
+	int ret;
+
+	if (st->gpio_reset) {
+		gpiod_set_value_cansleep(st->gpio_reset, 1);
+		ndelay(100); /* t_reset >= 100ns */
+		gpiod_set_value_cansleep(st->gpio_reset, 0);
+	} else {
+		ret = __ad5766_spi_write(st, AD5766_CMD_SW_FULL_RESET,
+					AD5766_FULL_RESET_CODE);
+		if (ret < 0)
+			return ret;
+	}
+
+	/*
+	 * Minimum time between a reset and the subsequent successful write is
+	 * typically 25 ns
+	 */
+	ndelay(25);
+
+	return 0;
+}
+
+static int ad5766_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val,
+			   int *val2,
+			   long m)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (m) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ad5766_read(indio_dev, chan->address, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = ad5766_span_tbl[st->crt_range].min;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = ad5766_span_tbl[st->crt_range].max -
+		       ad5766_span_tbl[st->crt_range].min;
+		*val2 = st->chip_info->channels[0].scan_type.realbits;
+
+		return IIO_VAL_FRACTIONAL_LOG2;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad5766_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val,
+			    int val2,
+			    long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+	{
+		const int max_val = GENMASK(chan->scan_type.realbits - 1, 0);
+
+		if (val > max_val || val < 0)
+			return -EINVAL;
+		val <<= chan->scan_type.shift;
+		return ad5766_write(indio_dev, chan->address, val);
+	}
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ad5766_info = {
+	.read_raw = ad5766_read_raw,
+	.write_raw = ad5766_write_raw,
+};
+
+static int ad5766_get_dither_source(struct iio_dev *dev,
+				    const struct iio_chan_spec *chan)
+{
+	struct ad5766_state *st = iio_priv(dev);
+	u32 source;
+
+	source = st->dither_source & AD5766_DITHER_SOURCE_MASK(chan->channel);
+	source = source >> (chan->channel * 2);
+	source -= 1;
+
+	return source;
+}
+
+static int ad5766_set_dither_source(struct iio_dev *dev,
+			  const struct iio_chan_spec *chan,
+			  unsigned int source)
+{
+	struct ad5766_state *st = iio_priv(dev);
+	uint16_t val;
+	int ret;
+
+	st->dither_source &= ~AD5766_DITHER_SOURCE_MASK(chan->channel);
+	st->dither_source |= AD5766_DITHER_SOURCE(chan->channel, source);
+
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_source);
+	ret = ad5766_write(dev, AD5766_CMD_DITHER_SIG_1, val);
+	if (ret)
+		return ret;
+
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_source);
+
+	return ad5766_write(dev, AD5766_CMD_DITHER_SIG_2, val);
+}
+
+static int ad5766_get_dither_scale(struct iio_dev *dev,
+				   const struct iio_chan_spec *chan)
+{
+	struct ad5766_state *st = iio_priv(dev);
+	u32 scale;
+
+	scale = st->dither_scale & AD5766_DITHER_SCALE_MASK(chan->channel);
+
+	return (scale >> (chan->channel * 2));
+}
+
+static int ad5766_set_dither_scale(struct iio_dev *dev,
+			  const struct iio_chan_spec *chan,
+			  unsigned int scale)
+{
+	int ret;
+	struct ad5766_state *st = iio_priv(dev);
+	uint16_t val;
+
+	st->dither_scale &= ~AD5766_DITHER_SCALE_MASK(chan->channel);
+	st->dither_scale |= AD5766_DITHER_SCALE(chan->channel, scale);
+
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_scale);
+	ret = ad5766_write(dev, AD5766_CMD_DITHER_SCALE_1, val);
+	if (ret)
+		return ret;
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_scale);
+
+	return ad5766_write(dev, AD5766_CMD_DITHER_SCALE_2, val);
+}
+
+static const struct iio_enum ad5766_dither_scale_enum = {
+	.items = ad5766_dither_scales,
+	.num_items = ARRAY_SIZE(ad5766_dither_scales),
+	.set = ad5766_set_dither_scale,
+	.get = ad5766_get_dither_scale,
+};
+
+static ssize_t ad5766_read_ext(struct iio_dev *indio_dev,
+			       uintptr_t private,
+			       const struct iio_chan_spec *chan,
+			       char *buf)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+
+	switch (private) {
+	case AD5766_DITHER_ENABLE:
+		return sprintf(buf, "%u\n",
+			       !(st->dither_enable & BIT(chan->channel)));
+		break;
+	case AD5766_DITHER_INVERT:
+		return sprintf(buf, "%u\n",
+			       !!(st->dither_invert & BIT(chan->channel)));
+		break;
+	case AD5766_DITHER_SOURCE:
+		return sprintf(buf, "%d\n",
+			       ad5766_get_dither_source(indio_dev, chan));
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t ad5766_write_ext(struct iio_dev *indio_dev,
+				 uintptr_t private,
+				 const struct iio_chan_spec *chan,
+				 const char *buf, size_t len)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	bool readin;
+	int ret;
+
+	ret = kstrtobool(buf, &readin);
+	if (ret)
+		return ret;
+
+	switch (private) {
+	case AD5766_DITHER_ENABLE:
+		st->dither_enable &= ~AD5766_DITHER_ENABLE_MASK(chan->channel);
+		st->dither_enable |= AD5766_DITHER_ENABLE(chan->channel,
+							  readin);
+		ret = ad5766_write(indio_dev, AD5766_CMD_WR_PWR_DITHER,
+				   st->dither_enable);
+		break;
+	case AD5766_DITHER_INVERT:
+		st->dither_invert &= ~AD5766_DITHER_INVERT_MASK(chan->channel);
+		st->dither_invert |= AD5766_DITHER_INVERT(chan->channel,
+							  readin);
+		ret = ad5766_write(indio_dev, AD5766_CMD_INV_DITHER,
+				   st->dither_invert);
+		break;
+	case AD5766_DITHER_SOURCE:
+		ret = ad5766_set_dither_source(indio_dev, chan, readin);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return ret ? ret : len;
+}
+
+#define _AD5766_CHAN_EXT_INFO(_name, _what, _shared) { \
+	.name = _name, \
+	.read = ad5766_read_ext, \
+	.write = ad5766_write_ext, \
+	.private = _what, \
+	.shared = _shared, \
+}
+
+#define IIO_ENUM_AVAILABLE_SHARED(_name, _shared, _e) \
+{ \
+	.name = (_name "_available"), \
+	.shared = _shared, \
+	.read = iio_enum_available_read, \
+	.private = (uintptr_t)(_e), \
+}
+
+static const struct iio_chan_spec_ext_info ad5766_ext_info[] = {
+
+	_AD5766_CHAN_EXT_INFO("dither_enable", AD5766_DITHER_ENABLE,
+			      IIO_SEPARATE),
+	_AD5766_CHAN_EXT_INFO("dither_invert", AD5766_DITHER_INVERT,
+			      IIO_SEPARATE),
+	_AD5766_CHAN_EXT_INFO("dither_source", AD5766_DITHER_SOURCE,
+			      IIO_SEPARATE),
+	IIO_ENUM("dither_scale", IIO_SEPARATE, &ad5766_dither_scale_enum),
+	IIO_ENUM_AVAILABLE_SHARED("dither_scale",
+				  IIO_SEPARATE,
+				  &ad5766_dither_scale_enum),
+	{}
+};
+
+#define AD576x_CHANNEL(_chan, _bits) {					\
+	.type = IIO_VOLTAGE,						\
+	.indexed = 1,							\
+	.output = 1,							\
+	.channel = (_chan),						\
+	.address = (_chan),						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |		\
+		BIT(IIO_CHAN_INFO_SCALE),				\
+	.scan_type = {							\
+		.sign = 'u',						\
+		.realbits = (_bits),					\
+		.storagebits = 16,					\
+		.shift = 16 - (_bits),					\
+	},								\
+	.ext_info = ad5766_ext_info,					\
+}
+
+#define DECLARE_AD576x_CHANNELS(_name, _bits)			\
+const struct iio_chan_spec _name[] = {				\
+	AD576x_CHANNEL(0, (_bits)),				\
+	AD576x_CHANNEL(1, (_bits)),				\
+	AD576x_CHANNEL(2, (_bits)),				\
+	AD576x_CHANNEL(3, (_bits)),				\
+	AD576x_CHANNEL(4, (_bits)),				\
+	AD576x_CHANNEL(5, (_bits)),				\
+	AD576x_CHANNEL(6, (_bits)),				\
+	AD576x_CHANNEL(7, (_bits)),				\
+	AD576x_CHANNEL(8, (_bits)),				\
+	AD576x_CHANNEL(9, (_bits)),				\
+	AD576x_CHANNEL(10, (_bits)),				\
+	AD576x_CHANNEL(11, (_bits)),				\
+	AD576x_CHANNEL(12, (_bits)),				\
+	AD576x_CHANNEL(13, (_bits)),				\
+	AD576x_CHANNEL(14, (_bits)),				\
+	AD576x_CHANNEL(15, (_bits)),				\
+}
+
+static DECLARE_AD576x_CHANNELS(ad5766_channels, 16);
+static DECLARE_AD576x_CHANNELS(ad5767_channels, 12);
+
+static const struct ad5766_chip_info ad5766_chip_infos[] = {
+	[ID_AD5766] = {
+		.num_channels = ARRAY_SIZE(ad5766_channels),
+		.channels = ad5766_channels,
+	},
+	[ID_AD5767] = {
+		.num_channels = ARRAY_SIZE(ad5767_channels),
+		.channels = ad5767_channels,
+	},
+};
+
+static int ad5766_get_output_range(struct ad5766_state *st)
+{
+	int i, ret, min, max, tmp[2];
+
+	ret = device_property_read_u32_array(&st->spi->dev,
+					     "output-range-voltage",
+					     tmp, 2);
+	if (ret)
+		return ret;
+
+	min = tmp[0] / 1000;
+	max = tmp[1] / 1000;
+	for (i = 0; i < ARRAY_SIZE(ad5766_span_tbl); i++) {
+		if (ad5766_span_tbl[i].min != min ||
+		    ad5766_span_tbl[i].max != max)
+			continue;
+
+		st->crt_range = i;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int ad5766_default_setup(struct ad5766_state *st)
+{
+	uint16_t val;
+	int ret, i;
+
+	/* Always issue a reset before writing to the span register. */
+	ret = ad5766_reset(st);
+	if (ret)
+		return ret;
+
+	ret = ad5766_get_output_range(st);
+	if (ret)
+		return ret;
+
+	/* Dither power down */
+	st->dither_enable = GENMASK(15, 0);
+	ret = __ad5766_spi_write(st, AD5766_CMD_WR_PWR_DITHER,
+			     st->dither_enable);
+	if (ret)
+		return ret;
+
+	st->dither_source = 0;
+	for (i = 0; i < ARRAY_SIZE(ad5766_channels); i++)
+		st->dither_source |= AD5766_DITHER_SOURCE(i, 0);
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_source);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SIG_1, val);
+	if (ret)
+		return ret;
+
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_source);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SIG_2, val);
+	if (ret)
+		return ret;
+
+	st->dither_scale = 0;
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_scale);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SCALE_1, val);
+	if (ret)
+		return ret;
+
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_scale);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SCALE_2, val);
+	if (ret)
+		return ret;
+
+	st->dither_invert = 0;
+	ret = __ad5766_spi_write(st, AD5766_CMD_INV_DITHER, st->dither_invert);
+	if (ret)
+		return ret;
+
+	return  __ad5766_spi_write(st, AD5766_CMD_SPAN_REG, st->crt_range);
+}
+
+static int ad5766_probe(struct spi_device *spi)
+{
+	enum ad5766_type type;
+	struct iio_dev *indio_dev;
+	struct ad5766_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	mutex_init(&st->lock);
+
+	st->spi = spi;
+	type = spi_get_device_id(spi)->driver_data;
+	st->chip_info = &ad5766_chip_infos[type];
+
+	indio_dev->channels = st->chip_info->channels;
+	indio_dev->num_channels = st->chip_info->num_channels;
+	indio_dev->info = &ad5766_info;
+	indio_dev->dev.parent = &spi->dev;
+	indio_dev->dev.of_node = spi->dev.of_node;
+	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	st->gpio_reset = devm_gpiod_get_optional(&st->spi->dev, "reset",
+						GPIOD_OUT_LOW);
+	if (IS_ERR(st->gpio_reset))
+		return PTR_ERR(st->gpio_reset);
+
+	ret = ad5766_default_setup(st);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct of_device_id ad5766_dt_match[] = {
+	{ .compatible = "adi,ad5766" },
+	{ .compatible = "adi,ad5767" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad5766_dt_match);
+
+static const struct spi_device_id ad5766_spi_ids[] = {
+	{ "ad5766", ID_AD5766 },
+	{ "ad5767", ID_AD5767 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, ad5766_spi_ids);
+
+static struct spi_driver ad5766_driver = {
+	.driver = {
+		.name = "ad5766",
+		.of_match_table = ad5766_dt_match,
+	},
+	.probe = ad5766_probe,
+	.id_table = ad5766_spi_ids,
+};
+module_spi_driver(ad5766_driver);
+
+MODULE_AUTHOR("Denis-Gabriel Gheorghescu <denis.gheorghescu@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD5766/AD5767 DACs");
+MODULE_LICENSE("GPL v2");

drivers/iio/frequency/adf4350.c

@@ -582,8 +582,7 @@ error_disable_reg:
 	if (!IS_ERR(st->reg))
 		regulator_disable(st->reg);
 error_disable_clk:
-	if (clk)
+	clk_disable_unprepare(clk);
-		clk_disable_unprepare(clk);
 
 	return ret;
 }
@@ -599,8 +598,7 @@ static int adf4350_remove(struct spi_device *spi)
 
 	iio_device_unregister(indio_dev);
 
-	if (st->clk)
+	clk_disable_unprepare(st->clk);
-		clk_disable_unprepare(st->clk);
 
 	if (!IS_ERR(reg))
 		regulator_disable(reg);

drivers/iio/gyro/bmg160_core.c

@@ -19,6 +19,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include "bmg160.h"
 
 #define BMG160_IRQ_NAME		"bmg160_event"
@@ -92,6 +93,7 @@
 
 struct bmg160_data {
 	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
 	struct iio_trigger *dready_trig;
 	struct iio_trigger *motion_trig;
 	struct iio_mount_matrix orientation;
@@ -1061,6 +1063,13 @@ static const char *bmg160_match_acpi_device(struct device *dev)
 	return dev_name(dev);
 }
 
+static void bmg160_disable_regulators(void *d)
+{
+	struct bmg160_data *data = d;
+
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
+}
+
 int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
 		      const char *name)
 {
@@ -1077,6 +1086,22 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
 	data->irq = irq;
 	data->regmap = regmap;
 
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators),
+				      data->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, bmg160_disable_regulators, data);
+	if (ret)
+		return ret;
+
 	ret = iio_read_mount_matrix(dev, "mount-matrix",
 				&data->orientation);
 	if (ret)

drivers/iio/gyro/hid-sensor-gyro-3d.c

@@ -23,15 +23,20 @@ enum gyro_3d_channel {
 	GYRO_3D_CHANNEL_MAX,
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP GYRO_3D_CHANNEL_MAX
 struct gyro_3d_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info gyro[GYRO_3D_CHANNEL_MAX];
-	u32 gyro_val[GYRO_3D_CHANNEL_MAX];
+	struct {
+		u32 gyro_val[GYRO_3D_CHANNEL_MAX];
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
 };
 
 static const u32 gyro_3d_addresses[GYRO_3D_CHANNEL_MAX] = {
@@ -72,7 +77,8 @@ static const struct iio_chan_spec gyro_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -178,14 +184,6 @@ static const struct iio_info gyro_3d_info = {
 	.write_raw = &gyro_3d_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
-	int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -195,10 +193,15 @@ static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "gyro_3d_proc_event\n");
-	if (atomic_read(&gyro_state->common_attributes.data_ready))
+	if (atomic_read(&gyro_state->common_attributes.data_ready)) {
-		hid_sensor_push_data(indio_dev,
+		if (!gyro_state->timestamp)
-				gyro_state->gyro_val,
+			gyro_state->timestamp = iio_get_time_ns(indio_dev);
-				sizeof(gyro_state->gyro_val));
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &gyro_state->scan,
+						   gyro_state->timestamp);
+
+		gyro_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -219,10 +222,15 @@ static int gyro_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
 	case HID_USAGE_SENSOR_ANGL_VELOCITY_Y_AXIS:
 	case HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS:
 		offset = usage_id - HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS;
-		gyro_state->gyro_val[CHANNEL_SCAN_INDEX_X + offset] =
+		gyro_state->scan.gyro_val[CHANNEL_SCAN_INDEX_X + offset] =
-						*(u32 *)raw_data;
+				*(u32 *)raw_data;
 		ret = 0;
 	break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		gyro_state->timestamp =
+			hid_sensor_convert_timestamp(&gyro_state->common_attributes,
+						     *(s64 *)raw_data);
+	break;
 	default:
 		break;
 	}

drivers/iio/imu/inv_mpu6050/Kconfig

@@ -16,8 +16,8 @@ config INV_MPU6050_I2C
 	select REGMAP_I2C
 	help
 	  This driver supports the Invensense MPU6050/9150,
-	  MPU6500/6515/9250/9255, ICM20608/20609/20689, ICM20602/ICM20690 and
+	  MPU6500/6515/6880/9250/9255, ICM20608/20609/20689, ICM20602/ICM20690
-	  IAM20680 motion tracking devices over I2C.
+	  and IAM20680 motion tracking devices over I2C.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-i2c.
 
@@ -28,7 +28,7 @@ config INV_MPU6050_SPI
 	select REGMAP_SPI
 	help
 	  This driver supports the Invensense MPU6000,
-	  MPU6500/6515/9250/9255, ICM20608/20609/20689, ICM20602/ICM20690 and
+	  MPU6500/6515/6880/9250/9255, ICM20608/20609/20689, ICM20602/ICM20690
-	  IAM20680 motion tracking devices over SPI.
+	  and IAM20680 motion tracking devices over SPI.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-spi.

drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

@@ -160,6 +160,14 @@ static const struct inv_mpu6050_hw hw_info[] = {
 		.fifo_size = 512,
 		.temp = {INV_MPU6500_TEMP_OFFSET, INV_MPU6500_TEMP_SCALE},
 	},
+	{
+		.whoami = INV_MPU6880_WHOAMI_VALUE,
+		.name = "MPU6880",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
+		.fifo_size = 4096,
+		.temp = {INV_MPU6500_TEMP_OFFSET, INV_MPU6500_TEMP_SCALE},
+	},
 	{
 		.whoami = INV_MPU6000_WHOAMI_VALUE,
 		.name = "MPU6000",
@@ -1323,6 +1331,7 @@ static int inv_check_and_setup_chip(struct inv_mpu6050_state *st)
 	case INV_MPU6000:
 	case INV_MPU6500:
 	case INV_MPU6515:
+	case INV_MPU6880:
 	case INV_MPU9250:
 	case INV_MPU9255:
 		/* reset signal path (required for spi connection) */

drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c

@@ -177,6 +177,7 @@ static const struct i2c_device_id inv_mpu_id[] = {
 	{"mpu6050", INV_MPU6050},
 	{"mpu6500", INV_MPU6500},
 	{"mpu6515", INV_MPU6515},
+	{"mpu6880", INV_MPU6880},
 	{"mpu9150", INV_MPU9150},
 	{"mpu9250", INV_MPU9250},
 	{"mpu9255", INV_MPU9255},
@@ -204,6 +205,10 @@ static const struct of_device_id inv_of_match[] = {
 		.compatible = "invensense,mpu6515",
 		.data = (void *)INV_MPU6515
 	},
+	{
+		.compatible = "invensense,mpu6880",
+		.data = (void *)INV_MPU6880
+	},
 	{
 		.compatible = "invensense,mpu9150",
 		.data = (void *)INV_MPU9150

drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h

@@ -70,6 +70,7 @@ enum inv_devices {
 	INV_MPU6050,
 	INV_MPU6500,
 	INV_MPU6515,
+	INV_MPU6880,
 	INV_MPU6000,
 	INV_MPU9150,
 	INV_MPU9250,
@@ -373,6 +374,7 @@ struct inv_mpu6050_state {
 #define INV_MPU6000_WHOAMI_VALUE		0x68
 #define INV_MPU6050_WHOAMI_VALUE		0x68
 #define INV_MPU6500_WHOAMI_VALUE		0x70
+#define INV_MPU6880_WHOAMI_VALUE		0x78
 #define INV_MPU9150_WHOAMI_VALUE		0x68
 #define INV_MPU9250_WHOAMI_VALUE		0x71
 #define INV_MPU9255_WHOAMI_VALUE		0x73

drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c

@@ -70,6 +70,7 @@ static const struct spi_device_id inv_mpu_id[] = {
 	{"mpu6000", INV_MPU6000},
 	{"mpu6500", INV_MPU6500},
 	{"mpu6515", INV_MPU6515},
+	{"mpu6880", INV_MPU6880},
 	{"mpu9250", INV_MPU9250},
 	{"mpu9255", INV_MPU9255},
 	{"icm20608", INV_ICM20608},
@@ -96,6 +97,10 @@ static const struct of_device_id inv_of_match[] = {
 		.compatible = "invensense,mpu6515",
 		.data = (void *)INV_MPU6515
 	},
+	{
+		.compatible = "invensense,mpu6880",
+		.data = (void *)INV_MPU6880
+	},
 	{
 		.compatible = "invensense,mpu9250",
 		.data = (void *)INV_MPU9250

drivers/iio/industrialio-core.c

@@ -169,6 +169,36 @@ static const char * const iio_chan_info_postfix[] = {
 	[IIO_CHAN_INFO_CALIBAMBIENT] = "calibambient",
 };
 
+/**
+ * iio_sysfs_match_string_with_gaps - matches given string in an array with gaps
+ * @array: array of strings
+ * @n: number of strings in the array
+ * @str: string to match with
+ *
+ * Returns index of @str in the @array or -EINVAL, similar to match_string().
+ * Uses sysfs_streq instead of strcmp for matching.
+ *
+ * This routine will look for a string in an array of strings.
+ * The search will continue until the element is found or the n-th element
+ * is reached, regardless of any NULL elements in the array.
+ */
+static int iio_sysfs_match_string_with_gaps(const char * const *array, size_t n,
+					    const char *str)
+{
+	const char *item;
+	int index;
+
+	for (index = 0; index < n; index++) {
+		item = array[index];
+		if (!item)
+			continue;
+		if (sysfs_streq(item, str))
+			return index;
+	}
+
+	return -EINVAL;
+}
+
 #if defined(CONFIG_DEBUG_FS)
 /*
  * There's also a CONFIG_DEBUG_FS guard in include/linux/iio/iio.h for
@@ -470,8 +500,11 @@ ssize_t iio_enum_available_read(struct iio_dev *indio_dev,
 	if (!e->num_items)
 		return 0;
 
-	for (i = 0; i < e->num_items; ++i)
+	for (i = 0; i < e->num_items; ++i) {
+		if (!e->items[i])
+			continue;
 		len += scnprintf(buf + len, PAGE_SIZE - len, "%s ", e->items[i]);
+	}
 
 	/* replace last space with a newline */
 	buf[len - 1] = '\n';
@@ -492,7 +525,7 @@ ssize_t iio_enum_read(struct iio_dev *indio_dev,
 	i = e->get(indio_dev, chan);
 	if (i < 0)
 		return i;
-	else if (i >= e->num_items)
+	else if (i >= e->num_items || !e->items[i])
 		return -EINVAL;
 
 	return snprintf(buf, PAGE_SIZE, "%s\n", e->items[i]);
@@ -509,7 +542,7 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
 	if (!e->set)
 		return -EINVAL;
 
-	ret = __sysfs_match_string(e->items, e->num_items, buf);
+	ret = iio_sysfs_match_string_with_gaps(e->items, e->num_items, buf);
 	if (ret < 0)
 		return ret;
 
@@ -1473,11 +1506,14 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
 		goto error_clear_attrs;
 	}
 	/* Copy across original attributes */
-	if (indio_dev->info->attrs)
+	if (indio_dev->info->attrs) {
 		memcpy(iio_dev_opaque->chan_attr_group.attrs,
 		       indio_dev->info->attrs->attrs,
 		       sizeof(iio_dev_opaque->chan_attr_group.attrs[0])
 		       *attrcount_orig);
+		iio_dev_opaque->chan_attr_group.is_visible =
+			indio_dev->info->attrs->is_visible;
+	}
 	attrn = attrcount_orig;
 	/* Add all elements from the list. */
 	list_for_each_entry(p, &iio_dev_opaque->channel_attr_list, l)

drivers/iio/inkern.c

@@ -191,8 +191,8 @@ err_free_channel:
 	return ERR_PTR(err);
 }
 
-static struct iio_channel *of_iio_channel_get_by_name(struct device_node *np,
+struct iio_channel *of_iio_channel_get_by_name(struct device_node *np,
-						      const char *name)
+					       const char *name)
 {
 	struct iio_channel *chan = NULL;
 
@@ -230,6 +230,7 @@ static struct iio_channel *of_iio_channel_get_by_name(struct device_node *np,
 
 	return chan;
 }
+EXPORT_SYMBOL_GPL(of_iio_channel_get_by_name);
 
 static struct iio_channel *of_iio_channel_get_all(struct device *dev)
 {
@@ -272,12 +273,6 @@ error_free_chans:
 
 #else /* CONFIG_OF */
 
-static inline struct iio_channel *
-of_iio_channel_get_by_name(struct device_node *np, const char *name)
-{
-	return NULL;
-}
-
 static inline struct iio_channel *of_iio_channel_get_all(struct device *dev)
 {
 	return NULL;
@@ -393,6 +388,29 @@ struct iio_channel *devm_iio_channel_get(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_iio_channel_get);
 
+struct iio_channel *devm_of_iio_channel_get_by_name(struct device *dev,
+						    struct device_node *np,
+						    const char *channel_name)
+{
+	struct iio_channel **ptr, *channel;
+
+	ptr = devres_alloc(devm_iio_channel_free, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return ERR_PTR(-ENOMEM);
+
+	channel = of_iio_channel_get_by_name(np, channel_name);
+	if (IS_ERR(channel)) {
+		devres_free(ptr);
+		return channel;
+	}
+
+	*ptr = channel;
+	devres_add(dev, ptr);
+
+	return channel;
+}
+EXPORT_SYMBOL_GPL(devm_of_iio_channel_get_by_name);
+
 struct iio_channel *iio_channel_get_all(struct device *dev)
 {
 	const char *name;

drivers/iio/light/apds9960.c

@@ -8,6 +8,7 @@
  * TODO: gesture + proximity calib offsets
  */
 
+#include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
@@ -1113,6 +1114,12 @@ static const struct i2c_device_id apds9960_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, apds9960_id);
 
+static const struct acpi_device_id apds9960_acpi_match[] = {
+	{ "MSHW0184" },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, apds9960_acpi_match);
+
 static const struct of_device_id apds9960_of_match[] = {
 	{ .compatible = "avago,apds9960" },
 	{ }
@@ -1124,6 +1131,7 @@ static struct i2c_driver apds9960_driver = {
 		.name	= APDS9960_DRV_NAME,
 		.of_match_table = apds9960_of_match,
 		.pm	= &apds9960_pm_ops,
+		.acpi_match_table = apds9960_acpi_match,
 	},
 	.probe		= apds9960_probe,
 	.remove		= apds9960_remove,

drivers/iio/light/hid-sensor-als.c

@@ -22,15 +22,21 @@ enum {
 	CHANNEL_SCAN_INDEX_MAX
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP CHANNEL_SCAN_INDEX_MAX
+
 struct als_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info als_illum;
-	u32 illum[CHANNEL_SCAN_INDEX_MAX];
+	struct {
+		u32 illum[CHANNEL_SCAN_INDEX_MAX];
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
 };
 
 /* Channel definitions */
@@ -54,7 +60,8 @@ static const struct iio_chan_spec als_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_ILLUM,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -168,14 +175,6 @@ static const struct iio_info als_info = {
 	.write_raw = &als_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
-					int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int als_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -185,10 +184,14 @@ static int als_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct als_state *als_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "als_proc_event\n");
-	if (atomic_read(&als_state->common_attributes.data_ready))
+	if (atomic_read(&als_state->common_attributes.data_ready)) {
-		hid_sensor_push_data(indio_dev,
+		if (!als_state->timestamp)
-				&als_state->illum,
+			als_state->timestamp = iio_get_time_ns(indio_dev);
-				sizeof(als_state->illum));
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &als_state->scan,
+						   als_state->timestamp);
+		als_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -206,10 +209,14 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev,
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_LIGHT_ILLUM:
-		als_state->illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data;
+		als_state->scan.illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data;
-		als_state->illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data;
+		als_state->scan.illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data;
 		ret = 0;
 		break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		als_state->timestamp = hid_sensor_convert_timestamp(&als_state->common_attributes,
+								    *(s64 *)raw_data);
+		break;
 	default:
 		break;
 	}

drivers/iio/light/tsl2583.c

@@ -285,7 +285,7 @@ static int tsl2583_get_lux(struct iio_dev *indio_dev)
 	lux64 = lux64 * chip->als_settings.als_gain_trim;
 	lux64 >>= 13;
 	lux = lux64;
-	lux = (lux + 500) / 1000;
+	lux = DIV_ROUND_CLOSEST(lux, 1000);
 
 	if (lux > TSL2583_LUX_CALC_OVER_FLOW) { /* check for overflow */
 return_max:
@@ -361,12 +361,12 @@ static int tsl2583_set_als_time(struct tsl2583_chip *chip)
 	u8 val;
 
 	/* determine als integration register */
-	als_count = (chip->als_settings.als_time * 100 + 135) / 270;
+	als_count = DIV_ROUND_CLOSEST(chip->als_settings.als_time * 100, 270);
 	if (!als_count)
 		als_count = 1; /* ensure at least one cycle */
 
 	/* convert back to time (encompasses overrides) */
-	als_time = (als_count * 27 + 5) / 10;
+	als_time = DIV_ROUND_CLOSEST(als_count * 27, 10);
 
 	val = 256 - als_count;
 	ret = i2c_smbus_write_byte_data(chip->client,
@@ -380,7 +380,7 @@ static int tsl2583_set_als_time(struct tsl2583_chip *chip)
 
 	/* set chip struct re scaling and saturation */
 	chip->als_saturation = als_count * 922; /* 90% of full scale */
-	chip->als_time_scale = (als_time + 25) / 50;
+	chip->als_time_scale = DIV_ROUND_CLOSEST(als_time, 50);
 
 	return ret;
 }

drivers/iio/light/vl6180.c

@@ -392,7 +392,7 @@ static int vl6180_set_it(struct vl6180_data *data, int val, int val2)
 {
 	int ret, it_ms;
 
-	it_ms = (val2 + 500) / 1000; /* round to ms */
+	it_ms = DIV_ROUND_CLOSEST(val2, 1000); /* round to ms */
 	if (val != 0 || it_ms < 1 || it_ms > 512)
 		return -EINVAL;
 

drivers/iio/magnetometer/Kconfig

@@ -205,4 +205,19 @@ config SENSORS_RM3100_SPI
 	  To compile this driver as a module, choose M here: the module
 	  will be called rm3100-spi.
 
+config YAMAHA_YAS530
+	tristate "Yamaha YAS530 family of 3-Axis Magnetometers (I2C)"
+	depends on I2C
+	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say Y here to add support for the Yamaha YAS530 series of
+	  3-Axis Magnetometers. Right now YAS530, YAS532 and YAS533 are
+	  fully supported.
+
+	  This driver can also be compiled as a module.
+	  To compile this driver as a module, choose M here: the module
+	  will be called yamaha-yas.
+
 endmenu

drivers/iio/magnetometer/Makefile

@@ -28,3 +28,5 @@ obj-$(CONFIG_SENSORS_HMC5843_SPI)	+= hmc5843_spi.o
 obj-$(CONFIG_SENSORS_RM3100)		+= rm3100-core.o
 obj-$(CONFIG_SENSORS_RM3100_I2C)	+= rm3100-i2c.o
 obj-$(CONFIG_SENSORS_RM3100_SPI)	+= rm3100-spi.o
+
+obj-$(CONFIG_YAMAHA_YAS530)		+= yamaha-yas530.o

drivers/iio/magnetometer/bmc150_magn.c

@@ -25,6 +25,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 
 #include "bmc150_magn.h"
 
@@ -135,6 +136,7 @@ struct bmc150_magn_data {
 	 */
 	struct mutex mutex;
 	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
 	struct iio_mount_matrix orientation;
 	/* 4 x 32 bits for x, y z, 4 bytes align, 64 bits timestamp */
 	s32 buffer[6];
@@ -692,12 +694,24 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
 	int ret, chip_id;
 	struct bmc150_magn_preset preset;
 
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret < 0) {
+		dev_err(data->dev, "Failed to enable regulators: %d\n", ret);
+		return ret;
+	}
+	/*
+	 * 3ms power-on time according to datasheet, let's better
+	 * be safe than sorry and set this delay to 5ms.
+	 */
+	msleep(5);
+
 	ret = bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND,
 					 false);
 	if (ret < 0) {
 		dev_err(data->dev,
 			"Failed to bring up device from suspend mode\n");
-		return ret;
+		goto err_regulator_disable;
 	}
 
 	ret = regmap_read(data->regmap, BMC150_MAGN_REG_CHIP_ID, &chip_id);
@@ -752,6 +766,8 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
 
 err_poweroff:
 	bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND, true);
+err_regulator_disable:
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
 	return ret;
 }
 
@@ -867,6 +883,13 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
 	data->irq = irq;
 	data->dev = dev;
 
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators),
+				      data->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to get regulators\n");
+
 	ret = iio_read_mount_matrix(dev, "mount-matrix",
 				&data->orientation);
 	if (ret)
@@ -984,6 +1007,7 @@ int bmc150_magn_remove(struct device *dev)
 	bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND, true);
 	mutex_unlock(&data->mutex);
 
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
 	return 0;
 }
 EXPORT_SYMBOL(bmc150_magn_remove);

drivers/iio/magnetometer/hid-sensor-magn-3d.c

@@ -24,6 +24,7 @@ enum magn_3d_channel {
 	CHANNEL_SCAN_INDEX_NORTH_TRUE_TILT_COMP,
 	CHANNEL_SCAN_INDEX_NORTH_MAGN,
 	CHANNEL_SCAN_INDEX_NORTH_TRUE,
+	CHANNEL_SCAN_INDEX_TIMESTAMP,
 	MAGN_3D_CHANNEL_MAX,
 };
 
@@ -47,6 +48,7 @@ struct magn_3d_state {
 
 	struct common_attributes magn_flux_attr;
 	struct common_attributes rot_attr;
+	s64 timestamp;
 };
 
 static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = {
@@ -57,6 +59,7 @@ static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = {
 	HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH,
 	HID_USAGE_SENSOR_ORIENT_MAGN_NORTH,
 	HID_USAGE_SENSOR_ORIENT_TRUE_NORTH,
+	HID_USAGE_SENSOR_TIME_TIMESTAMP,
 };
 
 /* Channel definitions */
@@ -124,7 +127,8 @@ static const struct iio_chan_spec magn_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_SCALE) |
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(7)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -273,13 +277,6 @@ static const struct iio_info magn_3d_info = {
 	.write_raw = &magn_3d_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -289,8 +286,15 @@ static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct magn_3d_state *magn_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "magn_3d_proc_event\n");
-	if (atomic_read(&magn_state->magn_flux_attributes.data_ready))
+	if (atomic_read(&magn_state->magn_flux_attributes.data_ready)) {
-		hid_sensor_push_data(indio_dev, magn_state->iio_vals);
+		if (!magn_state->timestamp)
+			magn_state->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev,
+						   magn_state->iio_vals,
+						   magn_state->timestamp);
+		magn_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -321,6 +325,11 @@ static int magn_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
 		offset = (usage_id - HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH)
 				+ CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP;
 	break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		magn_state->timestamp =
+			hid_sensor_convert_timestamp(&magn_state->magn_flux_attributes,
+						     *(s64 *)raw_data);
+		return ret;
 	default:
 		return -EINVAL;
 	}
@@ -386,9 +395,10 @@ static int magn_3d_parse_report(struct platform_device *pdev,
 		return -ENOMEM;
 	}
 
-	st->iio_vals = devm_kcalloc(&pdev->dev, attr_count,
+	/* attr_count include timestamp channel, and the iio_vals should be aligned to 8byte */
-				sizeof(u32),
+	st->iio_vals = devm_kcalloc(&pdev->dev,
-				GFP_KERNEL);
+				    ((attr_count + 1) % 2 + (attr_count + 1) / 2) * 2,
+				    sizeof(u32), GFP_KERNEL);
 	if (!st->iio_vals) {
 		dev_err(&pdev->dev,
 			"failed to allocate space for iio values array\n");
@@ -404,11 +414,13 @@ static int magn_3d_parse_report(struct platform_device *pdev,
 			(_channels[*chan_count]).scan_index = *chan_count;
 			(_channels[*chan_count]).address = i;
 
-			/* Set magn_val_addr to iio value address */
+			if (i != CHANNEL_SCAN_INDEX_TIMESTAMP) {
-			st->magn_val_addr[i] = &(st->iio_vals[*chan_count]);
+				/* Set magn_val_addr to iio value address */
-			magn_3d_adjust_channel_bit_mask(_channels,
+				st->magn_val_addr[i] = &st->iio_vals[*chan_count];
-							*chan_count,
+				magn_3d_adjust_channel_bit_mask(_channels,
-							st->magn[i].size);
+								*chan_count,
+								st->magn[i].size);
+			}
 			(*chan_count)++;
 		}
 	}

drivers/iio/orientation/hid-sensor-incl-3d.c

@@ -24,15 +24,21 @@ enum incl_3d_channel {
 	INCLI_3D_CHANNEL_MAX,
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP INCLI_3D_CHANNEL_MAX
+
 struct incl_3d_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info incl[INCLI_3D_CHANNEL_MAX];
-	u32 incl_val[INCLI_3D_CHANNEL_MAX];
+	struct {
+		u32 incl_val[INCLI_3D_CHANNEL_MAX];
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
 };
 
 static const u32 incl_3d_addresses[INCLI_3D_CHANNEL_MAX] = {
@@ -73,7 +79,8 @@ static const struct iio_chan_spec incl_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP),
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -178,13 +185,6 @@ static const struct iio_info incl_3d_info = {
 	.write_raw = &incl_3d_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, (u8 *)data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int incl_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -194,10 +194,16 @@ static int incl_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct incl_3d_state *incl_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "incl_3d_proc_event\n");
-	if (atomic_read(&incl_state->common_attributes.data_ready))
+	if (atomic_read(&incl_state->common_attributes.data_ready)) {
-		hid_sensor_push_data(indio_dev,
+		if (!incl_state->timestamp)
-				(u8 *)incl_state->incl_val,
+			incl_state->timestamp = iio_get_time_ns(indio_dev);
-				sizeof(incl_state->incl_val));
+
+		iio_push_to_buffers_with_timestamp(indio_dev,
+						   &incl_state->scan,
+						   incl_state->timestamp);
+
+		incl_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -214,13 +220,18 @@ static int incl_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_ORIENT_TILT_X:
-		incl_state->incl_val[CHANNEL_SCAN_INDEX_X] = *(u32 *)raw_data;
+		incl_state->scan.incl_val[CHANNEL_SCAN_INDEX_X] = *(u32 *)raw_data;
 	break;
 	case HID_USAGE_SENSOR_ORIENT_TILT_Y:
-		incl_state->incl_val[CHANNEL_SCAN_INDEX_Y] = *(u32 *)raw_data;
+		incl_state->scan.incl_val[CHANNEL_SCAN_INDEX_Y] = *(u32 *)raw_data;
 	break;
 	case HID_USAGE_SENSOR_ORIENT_TILT_Z:
-		incl_state->incl_val[CHANNEL_SCAN_INDEX_Z] = *(u32 *)raw_data;
+		incl_state->scan.incl_val[CHANNEL_SCAN_INDEX_Z] = *(u32 *)raw_data;
+	break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		incl_state->timestamp =
+			hid_sensor_convert_timestamp(&incl_state->common_attributes,
+						     *(s64 *)raw_data);
 	break;
 	default:
 		ret = -EINVAL;

drivers/iio/orientation/hid-sensor-rotation.c

@@ -20,11 +20,15 @@ struct dev_rot_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info quaternion;
-	u32 sampled_vals[4];
+	struct {
+		u32 sampled_vals[4] __aligned(16);
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
 };
 
 /* Channel definitions */
@@ -37,8 +41,10 @@ static const struct iio_chan_spec dev_rot_channels[] = {
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 					BIT(IIO_CHAN_INFO_OFFSET) |
 					BIT(IIO_CHAN_INFO_SCALE) |
-					BIT(IIO_CHAN_INFO_HYSTERESIS)
+					BIT(IIO_CHAN_INFO_HYSTERESIS),
-	}
+		.scan_index = 0
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(1)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -70,7 +76,7 @@ static int dev_rot_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_RAW:
 		if (size >= 4) {
 			for (i = 0; i < 4; ++i)
-				vals[i] = rot_state->sampled_vals[i];
+				vals[i] = rot_state->scan.sampled_vals[i];
 			ret_type = IIO_VAL_INT_MULTIPLE;
 			*val_len =  4;
 		} else
@@ -132,15 +138,6 @@ static const struct iio_info dev_rot_info = {
 	.write_raw = &dev_rot_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data >>\n");
-	iio_push_to_buffers(indio_dev, (u8 *)data);
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data <<\n");
-
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int dev_rot_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -150,10 +147,15 @@ static int dev_rot_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct dev_rot_state *rot_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "dev_rot_proc_event\n");
-	if (atomic_read(&rot_state->common_attributes.data_ready))
+	if (atomic_read(&rot_state->common_attributes.data_ready)) {
-		hid_sensor_push_data(indio_dev,
+		if (!rot_state->timestamp)
-				(u8 *)rot_state->sampled_vals,
+			rot_state->timestamp = iio_get_time_ns(indio_dev);
-				sizeof(rot_state->sampled_vals));
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &rot_state->scan,
+						   rot_state->timestamp);
+
+		rot_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -168,10 +170,14 @@ static int dev_rot_capture_sample(struct hid_sensor_hub_device *hsdev,
 	struct dev_rot_state *rot_state = iio_priv(indio_dev);
 
 	if (usage_id == HID_USAGE_SENSOR_ORIENT_QUATERNION) {
-		memcpy(rot_state->sampled_vals, raw_data,
+		memcpy(&rot_state->scan.sampled_vals, raw_data,
-					sizeof(rot_state->sampled_vals));
+		       sizeof(rot_state->scan.sampled_vals));
+
 		dev_dbg(&indio_dev->dev, "Recd Quat len:%zu::%zu\n", raw_len,
-					sizeof(rot_state->sampled_vals));
+			sizeof(rot_state->scan.sampled_vals));
+	} else if (usage_id == HID_USAGE_SENSOR_TIME_TIMESTAMP) {
+		rot_state->timestamp = hid_sensor_convert_timestamp(&rot_state->common_attributes,
+								    *(s64 *)raw_data);
 	}
 
 	return 0;

drivers/iio/position/Kconfig

@@ -16,4 +16,20 @@ config IQS624_POS
 	  To compile this driver as a module, choose M here: the module
 	  will be called iqs624-pos.
 
+config HID_SENSOR_CUSTOM_INTEL_HINGE
+	depends on HID_SENSOR_HUB
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select HID_SENSOR_IIO_COMMON
+	select HID_SENSOR_IIO_TRIGGER
+	tristate "HID Hinge"
+	help
+	  This sensor present three angles, hinge angel, screen angles
+	  and keyboard angle respect to horizon (ground).
+	  Say yes here to build support for the HID custom
+	  intel hinge sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hid-sensor-custom-hinge.
+
 endmenu

drivers/iio/position/Makefile

@@ -4,4 +4,5 @@
 
 # When adding new entries keep the list in alphabetical order
 
+obj-$(CONFIG_HID_SENSOR_CUSTOM_INTEL_HINGE) += hid-sensor-custom-intel-hinge.o
 obj-$(CONFIG_IQS624_POS)	+= iqs624-pos.o

drivers/iio/position/hid-sensor-custom-intel-hinge.c

@@ -0,0 +1,385 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * HID Sensors Driver
+ * Copyright (c) 2020, Intel Corporation.
+ */
+#include <linux/hid-sensor-hub.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/platform_device.h>
+
+#include "../common/hid-sensors/hid-sensor-trigger.h"
+
+enum hinge_channel {
+	CHANNEL_SCAN_INDEX_HINGE_ANGLE,
+	CHANNEL_SCAN_INDEX_SCREEN_ANGLE,
+	CHANNEL_SCAN_INDEX_KEYBOARD_ANGLE,
+	CHANNEL_SCAN_INDEX_MAX,
+};
+
+#define CHANNEL_SCAN_INDEX_TIMESTAMP CHANNEL_SCAN_INDEX_MAX
+
+static const u32 hinge_addresses[CHANNEL_SCAN_INDEX_MAX] = {
+	HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1),
+	HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(2),
+	HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(3)
+};
+
+static const char *const hinge_labels[CHANNEL_SCAN_INDEX_MAX] = { "hinge",
+								  "screen",
+								  "keyboard" };
+
+struct hinge_state {
+	struct iio_dev *indio_dev;
+	struct hid_sensor_hub_attribute_info hinge[CHANNEL_SCAN_INDEX_MAX];
+	struct hid_sensor_hub_callbacks callbacks;
+	struct hid_sensor_common common_attributes;
+	const char *labels[CHANNEL_SCAN_INDEX_MAX];
+	struct {
+		u32 hinge_val[3];
+		u64 timestamp __aligned(8);
+	} scan;
+
+	int scale_pre_decml;
+	int scale_post_decml;
+	int scale_precision;
+	int value_offset;
+	u64 timestamp;
+};
+
+/* Channel definitions */
+static const struct iio_chan_spec hinge_channels[] = {
+	{
+		.type = IIO_ANGL,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type =
+			BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS),
+		.scan_index = CHANNEL_SCAN_INDEX_HINGE_ANGLE,
+		.scan_type = {
+			.sign = 's',
+			.storagebits = 32,
+		},
+	}, {
+		.type = IIO_ANGL,
+		.indexed = 1,
+		.channel = 1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type =
+			BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS),
+		.scan_index = CHANNEL_SCAN_INDEX_SCREEN_ANGLE,
+		.scan_type = {
+			.sign = 's',
+			.storagebits = 32,
+		},
+	}, {
+		.type = IIO_ANGL,
+		.indexed = 1,
+		.channel = 2,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type =
+			BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS),
+		.scan_index = CHANNEL_SCAN_INDEX_KEYBOARD_ANGLE,
+		.scan_type = {
+			.sign = 's',
+			.storagebits = 32,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
+};
+
+/* Adjust channel real bits based on report descriptor */
+static void hinge_adjust_channel_realbits(struct iio_chan_spec *channels,
+					  int channel, int size)
+{
+	channels[channel].scan_type.realbits = size * 8;
+}
+
+/* Channel read_raw handler */
+static int hinge_read_raw(struct iio_dev *indio_dev,
+			  struct iio_chan_spec const *chan, int *val, int *val2,
+			  long mask)
+{
+	struct hinge_state *st = iio_priv(indio_dev);
+	struct hid_sensor_hub_device *hsdev;
+	int report_id;
+	s32 min;
+
+	hsdev = st->common_attributes.hsdev;
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		hid_sensor_power_state(&st->common_attributes, true);
+		report_id = st->hinge[chan->scan_index].report_id;
+		min = st->hinge[chan->scan_index].logical_minimum;
+		if (report_id < 0) {
+			hid_sensor_power_state(&st->common_attributes, false);
+			return -EINVAL;
+		}
+
+		*val = sensor_hub_input_attr_get_raw_value(st->common_attributes.hsdev,
+							   hsdev->usage,
+							   hinge_addresses[chan->scan_index],
+							   report_id,
+							   SENSOR_HUB_SYNC, min < 0);
+
+		hid_sensor_power_state(&st->common_attributes, false);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = st->scale_pre_decml;
+		*val2 = st->scale_post_decml;
+		return st->scale_precision;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = st->value_offset;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return hid_sensor_read_samp_freq_value(&st->common_attributes,
+						       val, val2);
+	case IIO_CHAN_INFO_HYSTERESIS:
+		return hid_sensor_read_raw_hyst_value(&st->common_attributes,
+						      val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+/* Channel write_raw handler */
+static int hinge_write_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan, int val, int val2,
+			   long mask)
+{
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return hid_sensor_write_samp_freq_value(&st->common_attributes,
+							val, val2);
+	case IIO_CHAN_INFO_HYSTERESIS:
+		return hid_sensor_write_raw_hyst_value(&st->common_attributes,
+						       val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int hinge_read_label(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, char *label)
+{
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	return sprintf(label, "%s\n", st->labels[chan->channel]);
+}
+
+static const struct iio_info hinge_info = {
+	.read_raw = hinge_read_raw,
+	.write_raw = hinge_write_raw,
+	.read_label = hinge_read_label,
+};
+
+/*
+ * Callback handler to send event after all samples are received
+ * and captured.
+ */
+static int hinge_proc_event(struct hid_sensor_hub_device *hsdev,
+			    unsigned int usage_id, void *priv)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(priv);
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	if (atomic_read(&st->common_attributes.data_ready)) {
+		if (!st->timestamp)
+			st->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &st->scan,
+						   st->timestamp);
+
+		st->timestamp = 0;
+	}
+	return 0;
+}
+
+/* Capture samples in local storage */
+static int hinge_capture_sample(struct hid_sensor_hub_device *hsdev,
+				unsigned int usage_id, size_t raw_len,
+				char *raw_data, void *priv)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(priv);
+	struct hinge_state *st = iio_priv(indio_dev);
+	int offset;
+
+	switch (usage_id) {
+	case HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1):
+	case HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(2):
+	case HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(3):
+		offset = usage_id - HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1);
+		st->scan.hinge_val[offset] = *(u32 *)raw_data;
+		return 0;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		st->timestamp = hid_sensor_convert_timestamp(&st->common_attributes,
+							     *(int64_t *)raw_data);
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+/* Parse report which is specific to an usage id */
+static int hinge_parse_report(struct platform_device *pdev,
+			      struct hid_sensor_hub_device *hsdev,
+			      struct iio_chan_spec *channels,
+			      unsigned int usage_id, struct hinge_state *st)
+{
+	int ret;
+	int i;
+
+	for (i = 0; i < CHANNEL_SCAN_INDEX_MAX; ++i) {
+		ret = sensor_hub_input_get_attribute_info(hsdev,
+							  HID_INPUT_REPORT,
+							  usage_id,
+							  hinge_addresses[i],
+							  &st->hinge[i]);
+		if (ret < 0)
+			return ret;
+
+		hinge_adjust_channel_realbits(channels, i, st->hinge[i].size);
+	}
+
+	st->scale_precision = hid_sensor_format_scale(HID_USAGE_SENSOR_HINGE,
+			&st->hinge[CHANNEL_SCAN_INDEX_HINGE_ANGLE],
+			&st->scale_pre_decml, &st->scale_post_decml);
+
+	/* Set Sensitivity field ids, when there is no individual modifier */
+	if (st->common_attributes.sensitivity.index < 0) {
+		sensor_hub_input_get_attribute_info(hsdev,
+				HID_FEATURE_REPORT, usage_id,
+				HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+					HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1),
+				&st->common_attributes.sensitivity);
+		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
+			st->common_attributes.sensitivity.index,
+			st->common_attributes.sensitivity.report_id);
+	}
+
+	return ret;
+}
+
+/* Function to initialize the processing for usage id */
+static int hid_hinge_probe(struct platform_device *pdev)
+{
+	struct hinge_state *st;
+	struct iio_dev *indio_dev;
+	struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+	int ret;
+	int i;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	st = iio_priv(indio_dev);
+	st->common_attributes.hsdev = hsdev;
+	st->common_attributes.pdev = pdev;
+	st->indio_dev = indio_dev;
+	for (i = 0; i < CHANNEL_SCAN_INDEX_MAX; i++)
+		st->labels[i] = hinge_labels[i];
+
+	ret = hid_sensor_parse_common_attributes(hsdev, hsdev->usage,
+						 &st->common_attributes);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to setup common attributes\n");
+		return ret;
+	}
+
+	indio_dev->num_channels = ARRAY_SIZE(hinge_channels);
+	indio_dev->channels = devm_kmemdup(&indio_dev->dev, hinge_channels,
+					   sizeof(hinge_channels), GFP_KERNEL);
+	if (!indio_dev->channels)
+		return -ENOMEM;
+
+	ret = hinge_parse_report(pdev, hsdev,
+				 (struct iio_chan_spec *)indio_dev->channels,
+				 hsdev->usage, st);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to setup attributes\n");
+		return ret;
+	}
+
+	indio_dev->dev.parent = &pdev->dev;
+	indio_dev->info = &hinge_info;
+	indio_dev->name = "hinge";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	atomic_set(&st->common_attributes.data_ready, 0);
+	ret = hid_sensor_setup_trigger(indio_dev, indio_dev->name,
+				       &st->common_attributes);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "trigger setup failed\n");
+		return ret;
+	}
+
+	st->callbacks.send_event = hinge_proc_event;
+	st->callbacks.capture_sample = hinge_capture_sample;
+	st->callbacks.pdev = pdev;
+	ret = sensor_hub_register_callback(hsdev, hsdev->usage, &st->callbacks);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "callback reg failed\n");
+		goto error_remove_trigger;
+	}
+
+	ret = iio_device_register(indio_dev);
+	if (ret) {
+		dev_err(&pdev->dev, "device register failed\n");
+		goto error_remove_callback;
+	}
+
+	return ret;
+
+error_remove_callback:
+	sensor_hub_remove_callback(hsdev, hsdev->usage);
+error_remove_trigger:
+	hid_sensor_remove_trigger(indio_dev, &st->common_attributes);
+	return ret;
+}
+
+/* Function to deinitialize the processing for usage id */
+static int hid_hinge_remove(struct platform_device *pdev)
+{
+	struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+	sensor_hub_remove_callback(hsdev, hsdev->usage);
+	hid_sensor_remove_trigger(indio_dev, &st->common_attributes);
+
+	return 0;
+}
+
+static const struct platform_device_id hid_hinge_ids[] = {
+	{
+		/* Format: HID-SENSOR-INT-usage_id_in_hex_lowercase */
+		.name = "HID-SENSOR-INT-020b",
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, hid_hinge_ids);
+
+static struct platform_driver hid_hinge_platform_driver = {
+	.id_table = hid_hinge_ids,
+	.driver = {
+		.name	= KBUILD_MODNAME,
+		.pm	= &hid_sensor_pm_ops,
+	},
+	.probe		= hid_hinge_probe,
+	.remove		= hid_hinge_remove,
+};
+module_platform_driver(hid_hinge_platform_driver);
+
+MODULE_DESCRIPTION("HID Sensor INTEL Hinge");
+MODULE_AUTHOR("Ye Xiang <xiang.ye@intel.com>");
+MODULE_LICENSE("GPL");

drivers/iio/pressure/ms5637.c

@@ -30,9 +30,25 @@
 
 #include "../common/ms_sensors/ms_sensors_i2c.h"
 
+struct ms_tp_data {
+	const char *name;
+	const struct ms_tp_hw_data *hw;
+};
+
 static const int ms5637_samp_freq[6] = { 960, 480, 240, 120, 60, 30 };
-/* String copy of the above const for readability purpose */
+
-static const char ms5637_show_samp_freq[] = "960 480 240 120 60 30";
+static ssize_t ms5637_show_samp_freq(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ms_tp_dev *dev_data = iio_priv(indio_dev);
+	int i, len = 0;
+
+	for (i = 0; i <= dev_data->hw->max_res_index; i++)
+		len += sysfs_emit_at(buf, len, "%u ", ms5637_samp_freq[i]);
+	sysfs_emit_at(buf, len - 1, "\n");
+
+	return len;
+}
 
 static int ms5637_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *channel, int *val,
@@ -109,10 +125,10 @@ static const struct iio_chan_spec ms5637_channels[] = {
 	}
 };
 
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq);
+static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq);
 
 static struct attribute *ms5637_attributes[] = {
-	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
+	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 	NULL,
 };
 
@@ -129,6 +145,7 @@ static const struct iio_info ms5637_info = {
 static int ms5637_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
+	const struct ms_tp_data *data;
 	struct ms_tp_dev *dev_data;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -142,17 +159,25 @@ static int ms5637_probe(struct i2c_client *client,
 		return -EOPNOTSUPP;
 	}
 
+	if (id)
+		data = (const struct ms_tp_data *)id->driver_data;
+	else
+		data = device_get_match_data(&client->dev);
+	if (!data)
+		return -EINVAL;
+
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data));
 	if (!indio_dev)
 		return -ENOMEM;
 
 	dev_data = iio_priv(indio_dev);
 	dev_data->client = client;
-	dev_data->res_index = 5;
+	dev_data->res_index = data->hw->max_res_index;
+	dev_data->hw = data->hw;
 	mutex_init(&dev_data->lock);
 
 	indio_dev->info = &ms5637_info;
-	indio_dev->name = id->name;
+	indio_dev->name = data->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ms5637_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ms5637_channels);
@@ -170,20 +195,44 @@ static int ms5637_probe(struct i2c_client *client,
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
+static const struct ms_tp_hw_data ms5637_hw_data  = {
+	.prom_len = 7,
+	.max_res_index = 5
+};
+
+static const struct ms_tp_hw_data ms5803_hw_data  = {
+	.prom_len = 8,
+	.max_res_index = 4
+};
+
+static const struct ms_tp_data ms5637_data = { .name = "ms5637", .hw = &ms5637_hw_data };
+
+static const struct ms_tp_data ms5803_data = { .name = "ms5803", .hw = &ms5803_hw_data };
+
+static const struct ms_tp_data ms5805_data = { .name = "ms5805", .hw = &ms5637_hw_data };
+
+static const struct ms_tp_data ms5837_data = { .name = "ms5837", .hw = &ms5637_hw_data };
+
+static const struct ms_tp_data ms8607_data = {
+	.name = "ms8607-temppressure",
+	.hw = &ms5637_hw_data,
+};
+
 static const struct i2c_device_id ms5637_id[] = {
-	{"ms5637", 0},
+	{"ms5637", (kernel_ulong_t)&ms5637_data },
-	{"ms5805", 0},
+	{"ms5805", (kernel_ulong_t)&ms5805_data },
-	{"ms5837", 0},
+	{"ms5837", (kernel_ulong_t)&ms5837_data },
-	{"ms8607-temppressure", 0},
+	{"ms8607-temppressure", (kernel_ulong_t)&ms8607_data },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ms5637_id);
 
 static const struct of_device_id ms5637_of_match[] = {
-	{ .compatible = "meas,ms5637", },
+	{ .compatible = "meas,ms5637", .data = &ms5637_data },
-	{ .compatible = "meas,ms5805", },
+	{ .compatible = "meas,ms5803", .data = &ms5803_data },
-	{ .compatible = "meas,ms5837", },
+	{ .compatible = "meas,ms5805", .data = &ms5805_data },
-	{ .compatible = "meas,ms8607-temppressure", },
+	{ .compatible = "meas,ms5837", .data = &ms5837_data },
+	{ .compatible = "meas,ms8607-temppressure", .data = &ms8607_data },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, ms5637_of_match);

drivers/staging/android/ashmem.c

@@ -933,7 +933,7 @@ static int __init ashmem_init(void)
 
 	ashmem_range_cachep = kmem_cache_create("ashmem_range_cache",
 						sizeof(struct ashmem_range),
-						0, 0, NULL);
+						0, SLAB_RECLAIM_ACCOUNT, NULL);
 	if (!ashmem_range_cachep) {
 		pr_err("failed to create slab cache\n");
 		goto out_free1;

drivers/staging/board/Kconfig

@@ -3,7 +3,10 @@ config STAGING_BOARD
 	bool "Staging Board Support"
 	depends on OF_ADDRESS && OF_IRQ && CLKDEV_LOOKUP
 	help
-	  Select to enable per-board staging support code.
+	  Staging board base is to support continuous upstream
-
+	  in-tree development and integration of platform devices.
-	  If in doubt, say N here.
 
+	  Helps developers integrate devices as platform devices for
+	  device drivers that only provide platform device bindings.
+	  This in turn allows for incremental development of both
+	  hardware feature support and DT binding work in parallel.

drivers/staging/clocking-wizard/TODO

@@ -2,7 +2,8 @@ TODO:
 	- support for fractional multiplier
 	- support for fractional divider (output 0 only)
 	- support for set_rate() operations (may benefit from Stephen Boyd's
-	  refactoring of the clk primitives: https://lkml.org/lkml/2014/9/5/766)
+	  refactoring of the clk primitives:
+	  https://lore.kernel.org/lkml/1409957256-23729-1-git-send-email-sboyd@codeaurora.org)
 	- review arithmetic
 	  - overflow after multiplication?
 	  - maximize accuracy before divisions

drivers/staging/comedi/comedi_fops.c

@@ -939,8 +939,8 @@ static int do_devinfo_ioctl(struct comedi_device *dev,
 	/* fill devinfo structure */
 	devinfo.version_code = COMEDI_VERSION_CODE;
 	devinfo.n_subdevs = dev->n_subdevices;
-	strlcpy(devinfo.driver_name, dev->driver->driver_name, COMEDI_NAMELEN);
+	strscpy(devinfo.driver_name, dev->driver->driver_name, COMEDI_NAMELEN);
-	strlcpy(devinfo.board_name, dev->board_name, COMEDI_NAMELEN);
+	strscpy(devinfo.board_name, dev->board_name, COMEDI_NAMELEN);
 
 	s = comedi_file_read_subdevice(file);
 	if (s)

drivers/staging/comedi/drivers/adl_pci7x3x.c

@@ -19,14 +19,15 @@
  *   PCI-7234 (adl_pci7234), PCI-7432 (adl_pci7432), PCI-7433 (adl_pci7433),
  *   PCI-7434 (adl_pci7434)
  * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
- * Updated: Thu, 02 Aug 2012 14:27:46 -0700
+ * Updated: Fri, 20 Nov 2020 14:49:36 +0000
- * Status: untested
+ * Status: works (tested on PCI-7230)
  *
  * One or two subdevices are setup by this driver depending on
  * the number of digital inputs and/or outputs provided by the
  * board. Each subdevice has a maximum of 32 channels.
  *
- *	PCI-7230 - 2 subdevices: 0 - 16 input, 1 - 16 output
+ *	PCI-7230 - 4 subdevices: 0 - 16 input, 1 - 16 output,
+ *	                         2 - IRQ_IDI0, 3 - IRQ_IDI1
  *	PCI-7233 - 1 subdevice: 0 - 32 input
  *	PCI-7234 - 1 subdevice: 0 - 32 output
  *	PCI-7432 - 2 subdevices: 0 - 32 input, 1 - 32 output
@@ -37,8 +38,9 @@
  * interrupt signals on digital input channels 0 and 1. The PCI-7233
  * has dual-interrupt sources for change-of-state (COS) on any 16
  * digital input channels of LSB and for COS on any 16 digital input
- * lines of MSB. Interrupts are not currently supported by this
+ * lines of MSB.
- * driver.
+ *
+ * Currently, this driver only supports interrupts for PCI-7230.
  *
  * Configuration Options: not applicable, uses comedi PCI auto config
  */
@@ -47,13 +49,22 @@
 
 #include "../comedi_pci.h"
 
+#include "plx9052.h"
+
 /*
  * Register I/O map (32-bit access only)
  */
-#define PCI7X3X_DIO_REG		0x00
+#define PCI7X3X_DIO_REG		0x0000	/* in the DigIO Port area */
-#define PCI743X_DIO_REG		0x04
+#define PCI743X_DIO_REG		0x0004
 
-enum apci1516_boardid {
+#define ADL_PT_CLRIRQ		0x0040	/* in the DigIO Port area */
+
+#define LINTI1_EN_ACT_IDI0 (PLX9052_INTCSR_LI1ENAB | PLX9052_INTCSR_LI1STAT)
+#define LINTI2_EN_ACT_IDI1 (PLX9052_INTCSR_LI2ENAB | PLX9052_INTCSR_LI2STAT)
+#define EN_PCI_LINT2H_LINT1H	\
+	(PLX9052_INTCSR_PCIENAB | PLX9052_INTCSR_LI2POL | PLX9052_INTCSR_LI1POL)
+
+enum adl_pci7x3x_boardid {
 	BOARD_PCI7230,
 	BOARD_PCI7233,
 	BOARD_PCI7234,
@@ -67,14 +78,16 @@ struct adl_pci7x3x_boardinfo {
 	int nsubdevs;
 	int di_nchan;
 	int do_nchan;
+	int irq_nchan;
 };
 
 static const struct adl_pci7x3x_boardinfo adl_pci7x3x_boards[] = {
 	[BOARD_PCI7230] = {
 		.name		= "adl_pci7230",
-		.nsubdevs	= 2,
+		.nsubdevs	= 4,  /* IDI, IDO, IRQ_IDI0, IRQ_IDI1 */
 		.di_nchan	= 16,
 		.do_nchan	= 16,
+		.irq_nchan	= 2,
 	},
 	[BOARD_PCI7233] = {
 		.name		= "adl_pci7233",
@@ -104,6 +117,178 @@ static const struct adl_pci7x3x_boardinfo adl_pci7x3x_boards[] = {
 	}
 };
 
+struct adl_pci7x3x_dev_private_data {
+	unsigned long lcr_io_base;
+	unsigned int int_ctrl;
+};
+
+struct adl_pci7x3x_sd_private_data {
+	spinlock_t subd_slock;		/* spin-lock for cmd_running */
+	unsigned long port_offset;
+	short int cmd_running;
+};
+
+static void process_irq(struct comedi_device *dev, unsigned int subdev,
+			unsigned short intcsr)
+{
+	struct comedi_subdevice *s = &dev->subdevices[subdev];
+	struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+	unsigned long reg = sd_priv->port_offset;
+	struct comedi_async *async_p = s->async;
+
+	if (async_p) {
+		unsigned short val = inw(dev->iobase + reg);
+
+		spin_lock(&sd_priv->subd_slock);
+		if (sd_priv->cmd_running)
+			comedi_buf_write_samples(s, &val, 1);
+		spin_unlock(&sd_priv->subd_slock);
+		comedi_handle_events(dev, s);
+	}
+}
+
+static irqreturn_t adl_pci7x3x_interrupt(int irq, void *p_device)
+{
+	struct comedi_device *dev = p_device;
+	struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+	unsigned long cpu_flags;
+	unsigned int intcsr;
+	bool li1stat, li2stat;
+
+	if (!dev->attached) {
+		/* Ignore interrupt before device fully attached. */
+		/* Might not even have allocated subdevices yet! */
+		return IRQ_NONE;
+	}
+
+	/* Check if we are source of interrupt */
+	spin_lock_irqsave(&dev->spinlock, cpu_flags);
+	intcsr = inl(dev_private->lcr_io_base + PLX9052_INTCSR);
+	li1stat = (intcsr & LINTI1_EN_ACT_IDI0) == LINTI1_EN_ACT_IDI0;
+	li2stat = (intcsr & LINTI2_EN_ACT_IDI1) == LINTI2_EN_ACT_IDI1;
+	if (li1stat || li2stat) {
+		/* clear all current interrupt flags */
+		/* Fixme: Reset all 2 Int Flags */
+		outb(0x00, dev->iobase + ADL_PT_CLRIRQ);
+	}
+	spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+	/* SubDev 2, 3 = Isolated DigIn , on "SCSI2" jack!*/
+
+	if (li1stat)	/* 0x0005 LINTi1 is Enabled && IDI0 is 1 */
+		process_irq(dev, 2, intcsr);
+
+	if (li2stat)	/* 0x0028 LINTi2 is Enabled && IDI1 is 1 */
+		process_irq(dev, 3, intcsr);
+
+	return IRQ_RETVAL(li1stat || li2stat);
+}
+
+static int adl_pci7x3x_asy_cmdtest(struct comedi_device *dev,
+				   struct comedi_subdevice *s,
+				   struct comedi_cmd *cmd)
+{
+	int err = 0;
+
+	/* Step 1 : check if triggers are trivially valid */
+
+	err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
+	err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
+	err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
+	err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+	err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_NONE);
+
+	if (err)
+		return 1;
+
+	/* Step 2a : make sure trigger sources are unique */
+	/* Step 2b : and mutually compatible */
+
+	/* Step 3: check if arguments are trivially valid */
+
+	err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
+	err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
+	err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
+	err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
+					   cmd->chanlist_len);
+	err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
+
+	if (err)
+		return 3;
+
+	/* Step 4: fix up any arguments */
+
+	/* Step 5: check channel list if it exists */
+
+	return 0;
+}
+
+static int adl_pci7x3x_asy_cmd(struct comedi_device *dev,
+			       struct comedi_subdevice *s)
+{
+	struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+	struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+	unsigned long cpu_flags;
+	unsigned int int_enab;
+
+	if (s->index == 2) {
+		/* enable LINTi1 == IDI sdi[0] Ch 0 IRQ ActHigh */
+		int_enab = PLX9052_INTCSR_LI1ENAB;
+	} else {
+		/* enable LINTi2 == IDI sdi[0] Ch 1 IRQ ActHigh */
+		int_enab = PLX9052_INTCSR_LI2ENAB;
+	}
+
+	spin_lock_irqsave(&dev->spinlock, cpu_flags);
+	dev_private->int_ctrl |= int_enab;
+	outl(dev_private->int_ctrl, dev_private->lcr_io_base + PLX9052_INTCSR);
+	spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+	spin_lock_irqsave(&sd_priv->subd_slock, cpu_flags);
+	sd_priv->cmd_running = 1;
+	spin_unlock_irqrestore(&sd_priv->subd_slock, cpu_flags);
+
+	return 0;
+}
+
+static int adl_pci7x3x_asy_cancel(struct comedi_device *dev,
+				  struct comedi_subdevice *s)
+{
+	struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+	struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+	unsigned long cpu_flags;
+	unsigned int int_enab;
+
+	spin_lock_irqsave(&sd_priv->subd_slock, cpu_flags);
+	sd_priv->cmd_running = 0;
+	spin_unlock_irqrestore(&sd_priv->subd_slock, cpu_flags);
+	/* disable Interrupts */
+	if (s->index == 2)
+		int_enab = PLX9052_INTCSR_LI1ENAB;
+	else
+		int_enab = PLX9052_INTCSR_LI2ENAB;
+	spin_lock_irqsave(&dev->spinlock, cpu_flags);
+	dev_private->int_ctrl &= ~int_enab;
+	outl(dev_private->int_ctrl, dev_private->lcr_io_base + PLX9052_INTCSR);
+	spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+	return 0;
+}
+
+/* same as _di_insn_bits because the IRQ-pins are the DI-ports  */
+static int adl_pci7x3x_dirq_insn_bits(struct comedi_device *dev,
+				      struct comedi_subdevice *s,
+				      struct comedi_insn *insn,
+				      unsigned int *data)
+{
+	struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+	unsigned long reg = (unsigned long)sd_priv->port_offset;
+
+	data[1] = inl(dev->iobase + reg);
+
+	return insn->n;
+}
+
 static int adl_pci7x3x_do_insn_bits(struct comedi_device *dev,
 				    struct comedi_subdevice *s,
 				    struct comedi_insn *insn,
@@ -143,15 +328,28 @@ static int adl_pci7x3x_di_insn_bits(struct comedi_device *dev,
 	return insn->n;
 }
 
+static int adl_pci7x3x_reset(struct comedi_device *dev)
+{
+	struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+
+	/* disable Interrupts */
+	dev_private->int_ctrl = 0x00;  /* Disable PCI + LINTi2 + LINTi1 */
+	outl(dev_private->int_ctrl, dev_private->lcr_io_base + PLX9052_INTCSR);
+
+	return 0;
+}
+
 static int adl_pci7x3x_auto_attach(struct comedi_device *dev,
 				   unsigned long context)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 	const struct adl_pci7x3x_boardinfo *board = NULL;
 	struct comedi_subdevice *s;
+	struct adl_pci7x3x_dev_private_data *dev_private;
 	int subdev;
 	int nchan;
 	int ret;
+	int ic;
 
 	if (context < ARRAY_SIZE(adl_pci7x3x_boards))
 		board = &adl_pci7x3x_boards[context];
@@ -160,10 +358,34 @@ static int adl_pci7x3x_auto_attach(struct comedi_device *dev,
 	dev->board_ptr = board;
 	dev->board_name = board->name;
 
+	dev_private = comedi_alloc_devpriv(dev, sizeof(*dev_private));
+	if (!dev_private)
+		return -ENOMEM;
+
 	ret = comedi_pci_enable(dev);
 	if (ret)
 		return ret;
 	dev->iobase = pci_resource_start(pcidev, 2);
+	dev_private->lcr_io_base = pci_resource_start(pcidev, 1);
+
+	adl_pci7x3x_reset(dev);
+
+	if (board->irq_nchan) {
+		/* discard all evtl. old IRQs */
+		outb(0x00, dev->iobase + ADL_PT_CLRIRQ);
+
+		if (pcidev->irq) {
+			ret = request_irq(pcidev->irq, adl_pci7x3x_interrupt,
+					  IRQF_SHARED, dev->board_name, dev);
+			if (ret == 0) {
+				dev->irq = pcidev->irq;
+				/* 0x52 PCI + IDI Ch 1 Ch 0 IRQ Off ActHigh */
+				dev_private->int_ctrl = EN_PCI_LINT2H_LINT1H;
+				outl(dev_private->int_ctrl,
+				     dev_private->lcr_io_base + PLX9052_INTCSR);
+			}
+		}
+	}
 
 	ret = comedi_alloc_subdevices(dev, board->nsubdevs);
 	if (ret)
@@ -237,14 +459,56 @@ static int adl_pci7x3x_auto_attach(struct comedi_device *dev,
 		}
 	}
 
+	for (ic = 0; ic < board->irq_nchan; ++ic) {
+		struct adl_pci7x3x_sd_private_data *sd_priv;
+
+		nchan = 1;
+
+		s = &dev->subdevices[subdev];
+		/* Isolated digital inputs 0 or 1 */
+		s->type		= COMEDI_SUBD_DI;
+		s->subdev_flags	= SDF_READABLE;
+		s->n_chan	= nchan;
+		s->maxdata	= 1;
+		s->insn_bits	= adl_pci7x3x_dirq_insn_bits;
+		s->range_table	= &range_digital;
+
+		sd_priv = comedi_alloc_spriv(s, sizeof(*sd_priv));
+		if (!sd_priv)
+			return -ENOMEM;
+
+		spin_lock_init(&sd_priv->subd_slock);
+		sd_priv->port_offset = PCI7X3X_DIO_REG;
+		sd_priv->cmd_running = 0;
+
+		if (dev->irq) {
+			dev->read_subdev = s;
+			s->type		= COMEDI_SUBD_DI;
+			s->subdev_flags	= SDF_READABLE | SDF_CMD_READ;
+			s->len_chanlist	= 1;
+			s->do_cmdtest	= adl_pci7x3x_asy_cmdtest;
+			s->do_cmd	= adl_pci7x3x_asy_cmd;
+			s->cancel	= adl_pci7x3x_asy_cancel;
+		}
+
+		subdev++;
+	}
+
 	return 0;
 }
 
+static void adl_pci7x3x_detach(struct comedi_device *dev)
+{
+	if (dev->iobase)
+		adl_pci7x3x_reset(dev);
+	comedi_pci_detach(dev);
+}
+
 static struct comedi_driver adl_pci7x3x_driver = {
 	.driver_name	= "adl_pci7x3x",
 	.module		= THIS_MODULE,
 	.auto_attach	= adl_pci7x3x_auto_attach,
-	.detach		= comedi_pci_detach,
+	.detach		= adl_pci7x3x_detach,
 };
 
 static int adl_pci7x3x_pci_probe(struct pci_dev *dev,

drivers/staging/comedi/drivers/adv_pci_dio.c

@@ -34,9 +34,15 @@
  */
 
 /* PCI-1730, PCI-1733, PCI-1736 interrupt control registers */
-#define PCI173X_INT_EN_REG	0x08	/* R/W: enable/disable */
+#define PCI173X_INT_EN_REG	0x0008	/* R/W: enable/disable */
-#define PCI173X_INT_RF_REG	0x0c	/* R/W: falling/rising edge */
+#define PCI173X_INT_RF_REG	0x000c	/* R/W: falling/rising edge */
-#define PCI173X_INT_CLR_REG	0x10	/* R/W: clear */
+#define PCI173X_INT_FLAG_REG	0x0010	/* R: status */
+#define PCI173X_INT_CLR_REG	0x0010	/* W: clear */
+
+#define PCI173X_INT_IDI0 0x01  /* IDI0 edge occurred */
+#define PCI173X_INT_IDI1 0x02  /* IDI1 edge occurred */
+#define PCI173X_INT_DI0  0x04  /* DI0 edge occurred */
+#define PCI173X_INT_DI1  0x08  /* DI1 edge occurred */
 
 /* PCI-1739U, PCI-1750, PCI1751 interrupt control registers */
 #define PCI1750_INT_REG		0x20	/* R/W: status/control */
@@ -63,6 +69,7 @@
 #define PCI_DIO_MAX_DI_SUBDEVS	2	/* 2 x 8/16/32 input channels max */
 #define PCI_DIO_MAX_DO_SUBDEVS	2	/* 2 x 8/16/32 output channels max */
 #define PCI_DIO_MAX_DIO_SUBDEVG	2	/* 2 x any number of 8255 devices max */
+#define PCI_DIO_MAX_IRQ_SUBDEVS	4	/* 4 x 1 input IRQ channels max */
 
 enum pci_dio_boardid {
 	TYPE_PCI1730,
@@ -84,7 +91,12 @@ enum pci_dio_boardid {
 
 struct diosubd_data {
 	int chans;		/*  num of chans or 8255 devices */
-	unsigned long addr;	/*  PCI address ofset */
+	unsigned long addr;	/*  PCI address offset */
+};
+
+struct dio_irq_subd_data {
+	unsigned short int_en;		/* interrupt enable/status bit */
+	unsigned long addr;		/* PCI address offset */
 };
 
 struct dio_boardtype {
@@ -93,6 +105,7 @@ struct dio_boardtype {
 	struct diosubd_data sdi[PCI_DIO_MAX_DI_SUBDEVS];
 	struct diosubd_data sdo[PCI_DIO_MAX_DO_SUBDEVS];
 	struct diosubd_data sdio[PCI_DIO_MAX_DIO_SUBDEVG];
+	struct dio_irq_subd_data sdirq[PCI_DIO_MAX_IRQ_SUBDEVS];
 	unsigned long id_reg;
 	unsigned long timer_regbase;
 	unsigned int is_16bit:1;
@@ -101,12 +114,17 @@ struct dio_boardtype {
 static const struct dio_boardtype boardtypes[] = {
 	[TYPE_PCI1730] = {
 		.name		= "pci1730",
-		.nsubdevs	= 5,
+		/* DI, IDI, DO, IDO, ID, IRQ_DI0, IRQ_DI1, IRQ_IDI0, IRQ_IDI1 */
+		.nsubdevs	= 9,
 		.sdi[0]		= { 16, 0x02, },	/* DI 0-15 */
 		.sdi[1]		= { 16, 0x00, },	/* ISO DI 0-15 */
 		.sdo[0]		= { 16, 0x02, },	/* DO 0-15 */
 		.sdo[1]		= { 16, 0x00, },	/* ISO DO 0-15 */
 		.id_reg		= 0x04,
+		.sdirq[0]	= { PCI173X_INT_DI0,  0x02, },	/* DI 0 */
+		.sdirq[1]	= { PCI173X_INT_DI1,  0x02, },	/* DI 1 */
+		.sdirq[2]	= { PCI173X_INT_IDI0, 0x00, },	/* ISO DI 0 */
+		.sdirq[3]	= { PCI173X_INT_IDI1, 0x00, },	/* ISO DI 1 */
 	},
 	[TYPE_PCI1733] = {
 		.name		= "pci1733",
@@ -205,6 +223,188 @@ static const struct dio_boardtype boardtypes[] = {
 	},
 };
 
+struct pci_dio_dev_private_data {
+	int boardtype;
+	int irq_subd;
+	unsigned short int_ctrl;
+	unsigned short int_rf;
+};
+
+struct pci_dio_sd_private_data {
+	spinlock_t subd_slock;		/* spin-lock for cmd_running */
+	unsigned long port_offset;
+	short int cmd_running;
+};
+
+static void process_irq(struct comedi_device *dev, unsigned int subdev,
+			unsigned char irqflags)
+{
+	struct comedi_subdevice *s = &dev->subdevices[subdev];
+	struct pci_dio_sd_private_data *sd_priv = s->private;
+	unsigned long reg = sd_priv->port_offset;
+	struct comedi_async *async_p = s->async;
+
+	if (async_p) {
+		unsigned short val = inw(dev->iobase + reg);
+
+		spin_lock(&sd_priv->subd_slock);
+		if (sd_priv->cmd_running)
+			comedi_buf_write_samples(s, &val, 1);
+		spin_unlock(&sd_priv->subd_slock);
+		comedi_handle_events(dev, s);
+	}
+}
+
+static irqreturn_t pci_dio_interrupt(int irq, void *p_device)
+{
+	struct comedi_device *dev = p_device;
+	struct pci_dio_dev_private_data *dev_private = dev->private;
+	const struct dio_boardtype *board = dev->board_ptr;
+	unsigned long cpu_flags;
+	unsigned char irqflags;
+	int i;
+
+	if (!dev->attached) {
+		/* Ignore interrupt before device fully attached. */
+		/* Might not even have allocated subdevices yet! */
+		return IRQ_NONE;
+	}
+
+	/* Check if we are source of interrupt */
+	spin_lock_irqsave(&dev->spinlock, cpu_flags);
+	irqflags = inb(dev->iobase + PCI173X_INT_FLAG_REG);
+	if (!(irqflags & 0x0F)) {
+		spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+		return IRQ_NONE;
+	}
+
+	/* clear all current interrupt flags */
+	outb(irqflags, dev->iobase + PCI173X_INT_CLR_REG);
+	spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+	/* check irq subdevice triggers */
+	for (i = 0; i < PCI_DIO_MAX_IRQ_SUBDEVS; i++) {
+		if (irqflags & board->sdirq[i].int_en)
+			process_irq(dev, dev_private->irq_subd + i, irqflags);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int pci_dio_asy_cmdtest(struct comedi_device *dev,
+			       struct comedi_subdevice *s,
+			       struct comedi_cmd *cmd)
+{
+	int err = 0;
+
+	/* Step 1 : check if triggers are trivially valid */
+
+	err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
+	err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
+	err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
+	err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+	err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_NONE);
+
+	if (err)
+		return 1;
+
+	/* Step 2a : make sure trigger sources are unique */
+	/* Step 2b : and mutually compatible */
+
+	/* Step 3: check if arguments are trivially valid */
+
+	err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
+	/*
+	 * For scan_begin_arg, the trigger number must be 0 and the only
+	 * allowed flags are CR_EDGE and CR_INVERT.  CR_EDGE is ignored,
+	 * CR_INVERT sets the trigger to falling edge.
+	 */
+	if (cmd->scan_begin_arg & ~(CR_EDGE | CR_INVERT)) {
+		cmd->scan_begin_arg &= (CR_EDGE | CR_INVERT);
+		err |= -EINVAL;
+	}
+	err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
+	err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
+					   cmd->chanlist_len);
+	err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
+
+	if (err)
+		return 3;
+
+	/* Step 4: fix up any arguments */
+
+	/* Step 5: check channel list if it exists */
+
+	return 0;
+}
+
+static int pci_dio_asy_cmd(struct comedi_device *dev,
+			   struct comedi_subdevice *s)
+{
+	struct pci_dio_dev_private_data *dev_private = dev->private;
+	struct pci_dio_sd_private_data *sd_priv = s->private;
+	const struct dio_boardtype *board = dev->board_ptr;
+	struct comedi_cmd *cmd = &s->async->cmd;
+	unsigned long cpu_flags;
+	unsigned short int_en;
+
+	int_en = board->sdirq[s->index - dev_private->irq_subd].int_en;
+
+	spin_lock_irqsave(&dev->spinlock, cpu_flags);
+	if (cmd->scan_begin_arg & CR_INVERT)
+		dev_private->int_rf |= int_en;	/* falling edge */
+	else
+		dev_private->int_rf &= ~int_en;	/* rising edge */
+	outb(dev_private->int_rf, dev->iobase + PCI173X_INT_RF_REG);
+	dev_private->int_ctrl |= int_en;	/* enable interrupt source */
+	outb(dev_private->int_ctrl, dev->iobase + PCI173X_INT_EN_REG);
+	spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+	spin_lock_irqsave(&sd_priv->subd_slock, cpu_flags);
+	sd_priv->cmd_running = 1;
+	spin_unlock_irqrestore(&sd_priv->subd_slock, cpu_flags);
+
+	return 0;
+}
+
+static int pci_dio_asy_cancel(struct comedi_device *dev,
+			      struct comedi_subdevice *s)
+{
+	struct pci_dio_dev_private_data *dev_private = dev->private;
+	struct pci_dio_sd_private_data *sd_priv = s->private;
+	const struct dio_boardtype *board = dev->board_ptr;
+	unsigned long cpu_flags;
+	unsigned short int_en;
+
+	spin_lock_irqsave(&sd_priv->subd_slock, cpu_flags);
+	sd_priv->cmd_running = 0;
+	spin_unlock_irqrestore(&sd_priv->subd_slock, cpu_flags);
+
+	int_en = board->sdirq[s->index - dev_private->irq_subd].int_en;
+
+	spin_lock_irqsave(&dev->spinlock, cpu_flags);
+	dev_private->int_ctrl &= ~int_en;
+	outb(dev_private->int_ctrl, dev->iobase + PCI173X_INT_EN_REG);
+	spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+	return 0;
+}
+
+/* same as _insn_bits_di_ because the IRQ-pins are the DI-ports  */
+static int pci_dio_insn_bits_dirq_b(struct comedi_device *dev,
+				    struct comedi_subdevice *s,
+				    struct comedi_insn *insn,
+				    unsigned int *data)
+{
+	struct pci_dio_sd_private_data *sd_priv = s->private;
+	unsigned long reg = (unsigned long)sd_priv->port_offset;
+	unsigned long iobase = dev->iobase + reg;
+
+	data[1] = inb(iobase);
+
+	return insn->n;
+}
+
 static int pci_dio_insn_bits_di_b(struct comedi_device *dev,
 				  struct comedi_subdevice *s,
 				  struct comedi_insn *insn,
@@ -283,6 +483,7 @@ static int pci_dio_insn_bits_do_w(struct comedi_device *dev,
 
 static int pci_dio_reset(struct comedi_device *dev, unsigned long cardtype)
 {
+	struct pci_dio_dev_private_data *dev_private = dev->private;
 	/* disable channel freeze function on the PCI-1752/1756 boards */
 	if (cardtype == TYPE_PCI1752 || cardtype == TYPE_PCI1756)
 		outw(0, dev->iobase + PCI1752_CFC_REG);
@@ -292,9 +493,13 @@ static int pci_dio_reset(struct comedi_device *dev, unsigned long cardtype)
 	case TYPE_PCI1730:
 	case TYPE_PCI1733:
 	case TYPE_PCI1736:
-		outb(0, dev->iobase + PCI173X_INT_EN_REG);
+		dev_private->int_ctrl = 0x00;
+		outb(dev_private->int_ctrl, dev->iobase + PCI173X_INT_EN_REG);
+		/* Reset all 4 Int Flags */
 		outb(0x0f, dev->iobase + PCI173X_INT_CLR_REG);
-		outb(0, dev->iobase + PCI173X_INT_RF_REG);
+		/* Rising Edge => IRQ . On all 4 Pins */
+		dev_private->int_rf = 0x00;
+		outb(dev_private->int_rf, dev->iobase + PCI173X_INT_RF_REG);
 		break;
 	case TYPE_PCI1739:
 	case TYPE_PCI1750:
@@ -346,8 +551,8 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 	const struct dio_boardtype *board = NULL;
-	const struct diosubd_data *d;
 	struct comedi_subdevice *s;
+	struct pci_dio_dev_private_data *dev_private;
 	int ret, subdev, i, j;
 
 	if (context < ARRAY_SIZE(boardtypes))
@@ -357,6 +562,10 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
 	dev->board_ptr = board;
 	dev->board_name = board->name;
 
+	dev_private = comedi_alloc_devpriv(dev, sizeof(*dev_private));
+	if (!dev_private)
+		return -ENOMEM;
+
 	ret = comedi_pci_enable(dev);
 	if (ret)
 		return ret;
@@ -365,15 +574,25 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
 	else
 		dev->iobase = pci_resource_start(pcidev, 2);
 
+	dev_private->boardtype = context;
 	pci_dio_reset(dev, context);
 
+	/* request IRQ if device has irq subdevices */
+	if (board->sdirq[0].int_en && pcidev->irq) {
+		ret = request_irq(pcidev->irq, pci_dio_interrupt, IRQF_SHARED,
+				  dev->board_name, dev);
+		if (ret == 0)
+			dev->irq = pcidev->irq;
+	}
+
 	ret = comedi_alloc_subdevices(dev, board->nsubdevs);
 	if (ret)
 		return ret;
 
 	subdev = 0;
 	for (i = 0; i < PCI_DIO_MAX_DI_SUBDEVS; i++) {
-		d = &board->sdi[i];
+		const struct diosubd_data *d = &board->sdi[i];
+
 		if (d->chans) {
 			s = &dev->subdevices[subdev++];
 			s->type		= COMEDI_SUBD_DI;
@@ -385,11 +604,13 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
 						? pci_dio_insn_bits_di_w
 						: pci_dio_insn_bits_di_b;
 			s->private	= (void *)d->addr;
+
 		}
 	}
 
 	for (i = 0; i < PCI_DIO_MAX_DO_SUBDEVS; i++) {
-		d = &board->sdo[i];
+		const struct diosubd_data *d = &board->sdo[i];
+
 		if (d->chans) {
 			s = &dev->subdevices[subdev++];
 			s->type		= COMEDI_SUBD_DO;
@@ -420,7 +641,8 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
 	}
 
 	for (i = 0; i < PCI_DIO_MAX_DIO_SUBDEVG; i++) {
-		d = &board->sdio[i];
+		const struct diosubd_data *d = &board->sdio[i];
+
 		for (j = 0; j < d->chans; j++) {
 			s = &dev->subdevices[subdev++];
 			ret = subdev_8255_init(dev, s, NULL,
@@ -454,14 +676,57 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
 		comedi_8254_subdevice_init(s, dev->pacer);
 	}
 
+	dev_private->irq_subd = subdev; /* first interrupt subdevice index */
+	for (i = 0; i < PCI_DIO_MAX_IRQ_SUBDEVS; ++i) {
+		struct pci_dio_sd_private_data *sd_priv = NULL;
+		const struct dio_irq_subd_data *d = &board->sdirq[i];
+
+		if (d->int_en) {
+			s = &dev->subdevices[subdev++];
+			s->type		= COMEDI_SUBD_DI;
+			s->subdev_flags	= SDF_READABLE;
+			s->n_chan	= 1;
+			s->maxdata	= 1;
+			s->range_table	= &range_digital;
+			s->insn_bits	= pci_dio_insn_bits_dirq_b;
+			sd_priv = comedi_alloc_spriv(s, sizeof(*sd_priv));
+			if (!sd_priv)
+				return -ENOMEM;
+
+			spin_lock_init(&sd_priv->subd_slock);
+			sd_priv->port_offset = d->addr;
+			sd_priv->cmd_running = 0;
+
+			if (dev->irq) {
+				dev->read_subdev = s;
+				s->type		= COMEDI_SUBD_DI;
+				s->subdev_flags	= SDF_READABLE | SDF_CMD_READ;
+				s->len_chanlist	= 1;
+				s->do_cmdtest	= pci_dio_asy_cmdtest;
+				s->do_cmd	= pci_dio_asy_cmd;
+				s->cancel	= pci_dio_asy_cancel;
+			}
+		}
+	}
+
 	return 0;
 }
 
+static void pci_dio_detach(struct comedi_device *dev)
+{
+	struct pci_dio_dev_private_data *dev_private = dev->private;
+	int boardtype = dev_private->boardtype;
+
+	if (dev->iobase)
+		pci_dio_reset(dev, boardtype);
+	comedi_pci_detach(dev);
+}
+
 static struct comedi_driver adv_pci_dio_driver = {
 	.driver_name	= "adv_pci_dio",
 	.module		= THIS_MODULE,
 	.auto_attach	= pci_dio_auto_attach,
-	.detach		= comedi_pci_detach,
+	.detach		= pci_dio_detach,
 };
 
 static unsigned long pci_dio_override_cardtype(struct pci_dev *pcidev,

drivers/staging/emxx_udc/emxx_udc.c

@@ -34,6 +34,9 @@
 #define	DRIVER_DESC	"EMXX UDC driver"
 #define	DMA_ADDR_INVALID	(~(dma_addr_t)0)
 
+static struct gpio_desc *vbus_gpio;
+static int vbus_irq;
+
 static const char	driver_name[] = "emxx_udc";
 static const char	driver_desc[] = DRIVER_DESC;
 

drivers/staging/emxx_udc/emxx_udc.h

@@ -20,8 +20,6 @@
 /* below hacked up for staging integration */
 #define GPIO_VBUS 0 /* GPIO_P153 on KZM9D */
 #define INT_VBUS 0 /* IRQ for GPIO_P153 */
-struct gpio_desc *vbus_gpio;
-int vbus_irq;
 
 /*------------ Board dependence(Wait) */
 

drivers/staging/fbtft/fb_st7789v.c

@@ -7,9 +7,13 @@
 
 #include <linux/bitops.h>
 #include <linux/delay.h>
+#include <linux/gpio/consumer.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/completion.h>
 #include <linux/module.h>
+
 #include <video/mipi_display.h>
 
 #include "fbtft.h"
@@ -66,6 +70,62 @@ enum st7789v_command {
 #define MADCTL_MX BIT(6) /* bitmask for column address order */
 #define MADCTL_MY BIT(7) /* bitmask for page address order */
 
+/* 60Hz for 16.6ms, configured as 2*16.6ms */
+#define PANEL_TE_TIMEOUT_MS  33
+
+static struct completion panel_te; /* completion for panel TE line */
+static int irq_te; /* Linux IRQ for LCD TE line */
+
+static irqreturn_t panel_te_handler(int irq, void *data)
+{
+	complete(&panel_te);
+	return IRQ_HANDLED;
+}
+
+/*
+ * init_tearing_effect_line() - init tearing effect line.
+ * @par: FBTFT parameter object.
+ *
+ * Return: 0 on success, or a negative error code otherwise.
+ */
+static int init_tearing_effect_line(struct fbtft_par *par)
+{
+	struct device *dev = par->info->device;
+	struct gpio_desc *te;
+	int rc, irq;
+
+	te = gpiod_get_optional(dev, "te", GPIOD_IN);
+	if (IS_ERR(te))
+		return dev_err_probe(dev, PTR_ERR(te), "Failed to request te GPIO\n");
+
+	/* if te is NULL, indicating no configuration, directly return success */
+	if (!te) {
+		irq_te = 0;
+		return 0;
+	}
+
+	irq = gpiod_to_irq(te);
+
+	/* GPIO is locked as an IRQ, we may drop the reference */
+	gpiod_put(te);
+
+	if (irq < 0)
+		return irq;
+
+	irq_te = irq;
+	init_completion(&panel_te);
+
+	/* The effective state is high and lasts no more than 1000 microseconds */
+	rc = devm_request_irq(dev, irq_te, panel_te_handler,
+			      IRQF_TRIGGER_RISING, "TE_GPIO", par);
+	if (rc)
+		return dev_err_probe(dev, rc, "TE IRQ request failed.\n");
+
+	disable_irq_nosync(irq_te);
+
+	return 0;
+}
+
 /**
  * init_display() - initialize the display controller
  *
@@ -82,6 +142,12 @@ enum st7789v_command {
  */
 static int init_display(struct fbtft_par *par)
 {
+	int rc;
+
+	rc = init_tearing_effect_line(par);
+	if (rc)
+		return rc;
+
 	/* turn off sleep mode */
 	write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE);
 	mdelay(120);
@@ -137,6 +203,10 @@ static int init_display(struct fbtft_par *par)
 	 */
 	write_reg(par, PWCTRL1, 0xA4, 0xA1);
 
+	/* TE line output is off by default when powering on */
+	if (irq_te)
+		write_reg(par, MIPI_DCS_SET_TEAR_ON, 0x00);
+
 	write_reg(par, MIPI_DCS_SET_DISPLAY_ON);
 
 	if (HSD20_IPS)
@@ -145,6 +215,50 @@ static int init_display(struct fbtft_par *par)
 	return 0;
 }
 
+/*
+ * write_vmem() - write data to display.
+ * @par: FBTFT parameter object.
+ * @offset: offset from screen_buffer.
+ * @len: the length of data to be writte.
+ *
+ * Return: 0 on success, or a negative error code otherwise.
+ */
+static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)
+{
+	struct device *dev = par->info->device;
+	int ret;
+
+	if (irq_te) {
+		enable_irq(irq_te);
+		reinit_completion(&panel_te);
+		ret = wait_for_completion_timeout(&panel_te,
+						  msecs_to_jiffies(PANEL_TE_TIMEOUT_MS));
+		if (ret == 0)
+			dev_err(dev, "wait panel TE timeout\n");
+
+		disable_irq(irq_te);
+	}
+
+	switch (par->pdata->display.buswidth) {
+	case 8:
+		ret = fbtft_write_vmem16_bus8(par, offset, len);
+		break;
+	case 9:
+		ret = fbtft_write_vmem16_bus9(par, offset, len);
+		break;
+	case 16:
+		ret = fbtft_write_vmem16_bus16(par, offset, len);
+		break;
+	default:
+		dev_err(dev, "Unsupported buswidth %d\n",
+			par->pdata->display.buswidth);
+		ret = 0;
+		break;
+	}
+
+	return ret;
+}
+
 /**
  * set_var() - apply LCD properties like rotation and BGR mode
  *
@@ -259,6 +373,7 @@ static struct fbtft_display display = {
 	.gamma = HSD20_IPS_GAMMA,
 	.fbtftops = {
 		.init_display = init_display,
+		.write_vmem = write_vmem,
 		.set_var = set_var,
 		.set_gamma = set_gamma,
 		.blank = blank,

drivers/staging/fieldbus/anybuss/arcx-anybus.c

@@ -185,7 +185,7 @@ static struct attribute *controller_attributes[] = {
 	NULL,
 };
 
-static struct attribute_group controller_attribute_group = {
+static const struct attribute_group controller_attribute_group = {
 	.attrs = controller_attributes,
 };
 
@@ -206,7 +206,7 @@ static int can_power_is_enabled(struct regulator_dev *rdev)
 	return !(readb(cd->cpld_base + CPLD_STATUS1) & CPLD_STATUS1_CAN_POWER);
 }
 
-static struct regulator_ops can_power_ops = {
+static const struct regulator_ops can_power_ops = {
 	.is_enabled = can_power_is_enabled,
 };
 

drivers/staging/fsl-dpaa2/ethsw/ethsw-ethtool.c

@@ -38,19 +38,19 @@ static void dpaa2_switch_get_drvinfo(struct net_device *netdev,
 	u16 version_major, version_minor;
 	int err;
 
-	strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
+	strscpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
 
 	err = dpsw_get_api_version(port_priv->ethsw_data->mc_io, 0,
 				   &version_major,
 				   &version_minor);
 	if (err)
-		strlcpy(drvinfo->fw_version, "N/A",
+		strscpy(drvinfo->fw_version, "N/A",
 			sizeof(drvinfo->fw_version));
 	else
 		snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 			 "%u.%u", version_major, version_minor);
 
-	strlcpy(drvinfo->bus_info, dev_name(netdev->dev.parent->parent),
+	strscpy(drvinfo->bus_info, dev_name(netdev->dev.parent->parent),
 		sizeof(drvinfo->bus_info));
 }
 

drivers/staging/fwserial/fwserial.c

@@ -2189,6 +2189,7 @@ static int fwserial_create(struct fw_unit *unit)
 		err = fw_core_add_address_handler(&port->rx_handler,
 						  &fw_high_memory_region);
 		if (err) {
+			tty_port_destroy(&port->port);
 			kfree(port);
 			goto free_ports;
 		}
@@ -2271,6 +2272,7 @@ unregister_ttys:
 
 free_ports:
 	for (--i; i >= 0; --i) {
+		fw_core_remove_address_handler(&serial->ports[i]->rx_handler);
 		tty_port_destroy(&serial->ports[i]->port);
 		kfree(serial->ports[i]);
 	}

drivers/staging/gasket/gasket_ioctl.c

@@ -40,10 +40,11 @@ static int gasket_set_event_fd(struct gasket_dev *gasket_dev,
 
 /* Read the size of the page table. */
 static int gasket_read_page_table_size(struct gasket_dev *gasket_dev,
-	struct gasket_page_table_ioctl __user *argp)
+				       struct gasket_page_table_ioctl __user *argp)
 {
 	int ret = 0;
 	struct gasket_page_table_ioctl ibuf;
+	struct gasket_page_table *table;
 
 	if (copy_from_user(&ibuf, argp, sizeof(struct gasket_page_table_ioctl)))
 		return -EFAULT;
@@ -51,8 +52,8 @@ static int gasket_read_page_table_size(struct gasket_dev *gasket_dev,
 	if (ibuf.page_table_index >= gasket_dev->num_page_tables)
 		return -EFAULT;
 
-	ibuf.size = gasket_page_table_num_entries(
+	table = gasket_dev->page_table[ibuf.page_table_index];
-		gasket_dev->page_table[ibuf.page_table_index]);
+	ibuf.size = gasket_page_table_num_entries(table);
 
 	trace_gasket_ioctl_page_table_data(ibuf.page_table_index, ibuf.size,
 					   ibuf.host_address,
@@ -66,10 +67,11 @@ static int gasket_read_page_table_size(struct gasket_dev *gasket_dev,
 
 /* Read the size of the simple page table. */
 static int gasket_read_simple_page_table_size(struct gasket_dev *gasket_dev,
-	struct gasket_page_table_ioctl __user *argp)
+					      struct gasket_page_table_ioctl __user *argp)
 {
 	int ret = 0;
 	struct gasket_page_table_ioctl ibuf;
+	struct gasket_page_table *table;
 
 	if (copy_from_user(&ibuf, argp, sizeof(struct gasket_page_table_ioctl)))
 		return -EFAULT;
@@ -77,8 +79,8 @@ static int gasket_read_simple_page_table_size(struct gasket_dev *gasket_dev,
 	if (ibuf.page_table_index >= gasket_dev->num_page_tables)
 		return -EFAULT;
 
-	ibuf.size =
+	table = gasket_dev->page_table[ibuf.page_table_index];
-		gasket_page_table_num_simple_entries(gasket_dev->page_table[ibuf.page_table_index]);
+	ibuf.size = gasket_page_table_num_simple_entries(table);
 
 	trace_gasket_ioctl_page_table_data(ibuf.page_table_index, ibuf.size,
 					   ibuf.host_address,
@@ -92,11 +94,12 @@ static int gasket_read_simple_page_table_size(struct gasket_dev *gasket_dev,
 
 /* Set the boundary between the simple and extended page tables. */
 static int gasket_partition_page_table(struct gasket_dev *gasket_dev,
-	struct gasket_page_table_ioctl __user *argp)
+				       struct gasket_page_table_ioctl __user *argp)
 {
 	int ret;
 	struct gasket_page_table_ioctl ibuf;
 	uint max_page_table_size;
+	struct gasket_page_table *table;
 
 	if (copy_from_user(&ibuf, argp, sizeof(struct gasket_page_table_ioctl)))
 		return -EFAULT;
@@ -107,8 +110,8 @@ static int gasket_partition_page_table(struct gasket_dev *gasket_dev,
 
 	if (ibuf.page_table_index >= gasket_dev->num_page_tables)
 		return -EFAULT;
-	max_page_table_size = gasket_page_table_max_size(
+	table = gasket_dev->page_table[ibuf.page_table_index];
-		gasket_dev->page_table[ibuf.page_table_index]);
+	max_page_table_size = gasket_page_table_max_size(table);
 
 	if (ibuf.size > max_page_table_size) {
 		dev_dbg(gasket_dev->dev,
@@ -119,8 +122,7 @@ static int gasket_partition_page_table(struct gasket_dev *gasket_dev,
 
 	mutex_lock(&gasket_dev->mutex);
 
-	ret = gasket_page_table_partition(
+	ret = gasket_page_table_partition(table, ibuf.size);
-		gasket_dev->page_table[ibuf.page_table_index], ibuf.size);
 	mutex_unlock(&gasket_dev->mutex);
 
 	return ret;
@@ -131,6 +133,7 @@ static int gasket_map_buffers(struct gasket_dev *gasket_dev,
 			      struct gasket_page_table_ioctl __user *argp)
 {
 	struct gasket_page_table_ioctl ibuf;
+	struct gasket_page_table *table;
 
 	if (copy_from_user(&ibuf, argp, sizeof(struct gasket_page_table_ioctl)))
 		return -EFAULT;
@@ -142,13 +145,12 @@ static int gasket_map_buffers(struct gasket_dev *gasket_dev,
 	if (ibuf.page_table_index >= gasket_dev->num_page_tables)
 		return -EFAULT;
 
-	if (gasket_page_table_are_addrs_bad(gasket_dev->page_table[ibuf.page_table_index],
+	table = gasket_dev->page_table[ibuf.page_table_index];
-					    ibuf.host_address,
+	if (gasket_page_table_are_addrs_bad(table, ibuf.host_address,
 					    ibuf.device_address, ibuf.size))
 		return -EINVAL;
 
-	return gasket_page_table_map(gasket_dev->page_table[ibuf.page_table_index],
+	return gasket_page_table_map(table, ibuf.host_address, ibuf.device_address,
-				     ibuf.host_address, ibuf.device_address,
 				     ibuf.size / PAGE_SIZE);
 }
 
@@ -157,6 +159,7 @@ static int gasket_unmap_buffers(struct gasket_dev *gasket_dev,
 				struct gasket_page_table_ioctl __user *argp)
 {
 	struct gasket_page_table_ioctl ibuf;
+	struct gasket_page_table *table;
 
 	if (copy_from_user(&ibuf, argp, sizeof(struct gasket_page_table_ioctl)))
 		return -EFAULT;
@@ -168,12 +171,11 @@ static int gasket_unmap_buffers(struct gasket_dev *gasket_dev,
 	if (ibuf.page_table_index >= gasket_dev->num_page_tables)
 		return -EFAULT;
 
-	if (gasket_page_table_is_dev_addr_bad(gasket_dev->page_table[ibuf.page_table_index],
+	table = gasket_dev->page_table[ibuf.page_table_index];
-					      ibuf.device_address, ibuf.size))
+	if (gasket_page_table_is_dev_addr_bad(table, ibuf.device_address, ibuf.size))
 		return -EINVAL;
 
-	gasket_page_table_unmap(gasket_dev->page_table[ibuf.page_table_index],
+	gasket_page_table_unmap(table, ibuf.device_address, ibuf.size / PAGE_SIZE);
-				ibuf.device_address, ibuf.size / PAGE_SIZE);
 
 	return 0;
 }
@@ -183,7 +185,7 @@ static int gasket_unmap_buffers(struct gasket_dev *gasket_dev,
  * corresponding memory.
  */
 static int gasket_config_coherent_allocator(struct gasket_dev *gasket_dev,
-	struct gasket_coherent_alloc_config_ioctl __user *argp)
+					    struct gasket_coherent_alloc_config_ioctl __user *argp)
 {
 	int ret;
 	struct gasket_coherent_alloc_config_ioctl ibuf;

drivers/staging/gdm724x/gdm_usb.c

@@ -56,20 +56,24 @@ static int gdm_usb_recv(void *priv_dev,
 
 static int request_mac_address(struct lte_udev *udev)
 {
-	u8 buf[16] = {0,};
+	struct hci_packet *hci;
-	struct hci_packet *hci = (struct hci_packet *)buf;
 	struct usb_device *usbdev = udev->usbdev;
 	int actual;
 	int ret = -1;
 
+	hci = kmalloc(struct_size(hci, data, 1), GFP_KERNEL);
+	if (!hci)
+		return -ENOMEM;
+
 	hci->cmd_evt = gdm_cpu_to_dev16(udev->gdm_ed, LTE_GET_INFORMATION);
 	hci->len = gdm_cpu_to_dev16(udev->gdm_ed, 1);
 	hci->data[0] = MAC_ADDRESS;
 
-	ret = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 2), buf, 5,
+	ret = usb_bulk_msg(usbdev, usb_sndbulkpipe(usbdev, 2), hci, 5,
 			   &actual, 1000);
 
 	udev->request_mac_addr = 1;
+	kfree(hci);
 
 	return ret;
 }

drivers/staging/greybus/audio_helper.c

@@ -166,7 +166,7 @@ static int gbaudio_remove_controls(struct snd_card *card, struct device *dev,
 			snprintf(id.name, sizeof(id.name), "%s %s", prefix,
 				 control->name);
 		else
-			strlcpy(id.name, control->name, sizeof(id.name));
+			strscpy(id.name, control->name, sizeof(id.name));
 		id.numid = 0;
 		id.iface = control->iface;
 		id.device = control->device;

drivers/staging/greybus/audio_manager_sysfs.c

@@ -18,8 +18,8 @@ static ssize_t manager_sysfs_add_store(struct kobject *kobj,
 	struct gb_audio_manager_module_descriptor desc = { {0} };
 
 	int num = sscanf(buf,
-			"name=%" GB_AUDIO_MANAGER_MODULE_NAME_LEN_SSCANF "s "
+			"name=%" GB_AUDIO_MANAGER_MODULE_NAME_LEN_SSCANF
-			"vid=%d pid=%d intf_id=%d i/p devices=0x%X o/p devices=0x%X",
+			"s vid=%d pid=%d intf_id=%d i/p devices=0x%X o/p devices=0x%X",
 			desc.name, &desc.vid, &desc.pid, &desc.intf_id,
 			&desc.ip_devices, &desc.op_devices);
 

drivers/staging/greybus/audio_module.c

@@ -342,7 +342,7 @@ static int gb_audio_probe(struct gb_bundle *bundle,
 	/* inform above layer for uevent */
 	dev_dbg(dev, "Inform set_event:%d to above layer\n", 1);
 	/* prepare for the audio manager */
-	strlcpy(desc.name, gbmodule->name, GB_AUDIO_MANAGER_MODULE_NAME_LEN);
+	strscpy(desc.name, gbmodule->name, GB_AUDIO_MANAGER_MODULE_NAME_LEN);
 	desc.vid = 2; /* todo */
 	desc.pid = 3; /* todo */
 	desc.intf_id = gbmodule->dev_id;

drivers/staging/greybus/audio_topology.c

@@ -200,7 +200,7 @@ static int gbcodec_mixer_ctl_info(struct snd_kcontrol *kcontrol,
 			return -EINVAL;
 		name = gbaudio_map_controlid(module, data->ctl_id,
 					     uinfo->value.enumerated.item);
-		strlcpy(uinfo->value.enumerated.name, name, NAME_SIZE);
+		strscpy(uinfo->value.enumerated.name, name, NAME_SIZE);
 		break;
 	default:
 		dev_err(comp->dev, "Invalid type: %d for %s:kcontrol\n",
@@ -1047,7 +1047,7 @@ static int gbaudio_tplg_create_widget(struct gbaudio_module_info *module,
 	}
 
 	/* Prefix dev_id to widget control_name */
-	strlcpy(temp_name, w->name, NAME_SIZE);
+	strscpy(temp_name, w->name, NAME_SIZE);
 	snprintf(w->name, NAME_SIZE, "GB %d %s", module->dev_id, temp_name);
 
 	switch (w->type) {
@@ -1169,7 +1169,7 @@ static int gbaudio_tplg_process_kcontrols(struct gbaudio_module_info *module,
 		}
 		control->id = curr->id;
 		/* Prefix dev_id to widget_name */
-		strlcpy(temp_name, curr->name, NAME_SIZE);
+		strscpy(temp_name, curr->name, NAME_SIZE);
 		snprintf(curr->name, NAME_SIZE, "GB %d %s", module->dev_id,
 			 temp_name);
 		control->name = curr->name;

drivers/staging/greybus/hid.c

@@ -221,8 +221,8 @@ static void gb_hid_init_reports(struct gb_hid *ghid)
 }
 
 static int __gb_hid_get_raw_report(struct hid_device *hid,
-		unsigned char report_number, __u8 *buf, size_t count,
+				   unsigned char report_number, __u8 *buf, size_t count,
-		unsigned char report_type)
+				   unsigned char report_type)
 {
 	struct gb_hid *ghid = hid->driver_data;
 	int ret;
@@ -254,7 +254,7 @@ static int __gb_hid_output_raw_report(struct hid_device *hid, __u8 *buf,
 
 	ret = gb_hid_set_report(ghid, report_type, report_id, buf, len);
 	if (report_id && ret >= 0)
-		ret++; /* add report_id to the number of transfered bytes */
+		ret++; /* add report_id to the number of transferred bytes */
 
 	return 0;
 }

drivers/staging/greybus/light.c

@@ -290,8 +290,7 @@ static int channel_attr_groups_set(struct gb_channel *channel,
 	channel->attrs = kcalloc(size + 1, sizeof(*channel->attrs), GFP_KERNEL);
 	if (!channel->attrs)
 		return -ENOMEM;
-	channel->attr_group = kcalloc(1, sizeof(*channel->attr_group),
+	channel->attr_group = kzalloc(sizeof(*channel->attr_group), GFP_KERNEL);
-				      GFP_KERNEL);
 	if (!channel->attr_group)
 		return -ENOMEM;
 	channel->attr_groups = kcalloc(2, sizeof(*channel->attr_groups),

drivers/staging/greybus/power_supply.c

@@ -449,7 +449,7 @@ static int __gb_power_supply_set_name(char *init_name, char *name, size_t len)
 
 	if (!strlen(init_name))
 		init_name = "gb_power_supply";
-	strlcpy(name, init_name, len);
+	strscpy(name, init_name, len);
 
 	while ((ret < len) && (psy = power_supply_get_by_name(name))) {
 		power_supply_put(psy);

drivers/staging/greybus/spilib.c

@@ -455,10 +455,10 @@ static int gb_spi_setup_device(struct gb_spilib *spi, u8 cs)
 	dev_type = response.device_type;
 
 	if (dev_type == GB_SPI_SPI_DEV)
-		strlcpy(spi_board.modalias, "spidev",
+		strscpy(spi_board.modalias, "spidev",
 			sizeof(spi_board.modalias));
 	else if (dev_type == GB_SPI_SPI_NOR)
-		strlcpy(spi_board.modalias, "spi-nor",
+		strscpy(spi_board.modalias, "spi-nor",
 			sizeof(spi_board.modalias));
 	else if (dev_type == GB_SPI_SPI_MODALIAS)
 		memcpy(spi_board.modalias, response.name,

drivers/staging/hikey9xx/Kconfig

@@ -29,6 +29,7 @@ config MFD_HI6421_SPMI
 	depends on OF
 	depends on SPMI
 	select MFD_CORE
+	select REGMAP_SPMI
 	help
 	  Add support for HiSilicon Hi6421v600 SPMI PMIC. Hi6421 includes
 	  multi-functions, such as regulators, RTC, codec, Coulomb counter,
@@ -44,6 +45,7 @@ config REGULATOR_HI6421V600
 	tristate "HiSilicon Hi6421v600 PMIC voltage regulator support"
 	depends on MFD_HI6421_SPMI && OF
 	depends on REGULATOR
+	select REGMAP
 	help
 	  This driver provides support for the voltage regulators on
 	  HiSilicon Hi6421v600 PMU / Codec IC.

drivers/staging/hikey9xx/hi6421-spmi-pmic.c

@@ -4,149 +4,105 @@
  *
  * Copyright (c) 2013 Linaro Ltd.
  * Copyright (c) 2011 Hisilicon.
- *
+ * Copyright (c) 2020-2021 Huawei Technologies Co., Ltd
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
-#include <linux/delay.h>
+#include <linux/bitops.h>
-#include <linux/device.h>
-#include <linux/err.h>
 #include <linux/interrupt.h>
-#include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/hi6421-spmi-pmic.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
 #include <linux/of_gpio.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/spmi.h>
 
-/* 8-bit register offset in PMIC */
+enum hi6421_spmi_pmic_irq_list {
-#define HISI_MASK_STATE			0xff
+	OTMP = 0,
+	VBUS_CONNECT,
+	VBUS_DISCONNECT,
+	ALARMON_R,
+	HOLD_6S,
+	HOLD_1S,
+	POWERKEY_UP,
+	POWERKEY_DOWN,
+	OCP_SCP_R,
+	COUL_R,
+	SIM0_HPD_R,
+	SIM0_HPD_F,
+	SIM1_HPD_R,
+	SIM1_HPD_F,
+	PMIC_IRQ_LIST_MAX,
+};
 
 #define HISI_IRQ_ARRAY			2
 #define HISI_IRQ_NUM			(HISI_IRQ_ARRAY * 8)
 
+#define HISI_IRQ_KEY_NUM		0
+
+#define HISI_BITS			8
+#define HISI_IRQ_KEY_VALUE		(BIT(POWERKEY_DOWN) | BIT(POWERKEY_UP))
+#define HISI_MASK			GENMASK(HISI_BITS - 1, 0)
+
+/*
+ * The IRQs are mapped as:
+ *
+ * 	======================  =============   ============	=====
+ *	IRQ			MASK REGISTER 	IRQ REGISTER	BIT
+ * 	======================  =============   ============	=====
+ *	OTMP			0x0202		0x212		bit 0
+ *	VBUS_CONNECT		0x0202		0x212		bit 1
+ *	VBUS_DISCONNECT		0x0202		0x212		bit 2
+ *	ALARMON_R		0x0202		0x212		bit 3
+ *	HOLD_6S			0x0202		0x212		bit 4
+ *	HOLD_1S			0x0202		0x212		bit 5
+ *	POWERKEY_UP		0x0202		0x212		bit 6
+ *	POWERKEY_DOWN		0x0202		0x212		bit 7
+ *
+ *	OCP_SCP_R		0x0203		0x213		bit 0
+ *	COUL_R			0x0203		0x213		bit 1
+ *	SIM0_HPD_R		0x0203		0x213		bit 2
+ *	SIM0_HPD_F		0x0203		0x213		bit 3
+ *	SIM1_HPD_R		0x0203		0x213		bit 4
+ *	SIM1_HPD_F		0x0203		0x213		bit 5
+ * 	======================  =============   ============	=====
+ */
 #define SOC_PMIC_IRQ_MASK_0_ADDR	0x0202
 #define SOC_PMIC_IRQ0_ADDR		0x0212
 
-#define HISI_IRQ_KEY_NUM		0
+#define IRQ_MASK_REGISTER(irq_data)	(SOC_PMIC_IRQ_MASK_0_ADDR + \
-#define HISI_IRQ_KEY_VALUE		0xc0
+					 (irqd_to_hwirq(irq_data) >> 3))
-#define HISI_IRQ_KEY_DOWN		7
+#define IRQ_MASK_BIT(irq_data)		BIT(irqd_to_hwirq(irq_data) & 0x07)
-#define HISI_IRQ_KEY_UP			6
-
-#define HISI_MASK_FIELD			0xFF
-#define HISI_BITS			8
-
-/*define the first group interrupt register number*/
-#define HISI_PMIC_FIRST_GROUP_INT_NUM	2
 
 static const struct mfd_cell hi6421v600_devs[] = {
 	{ .name = "hi6421v600-regulator", },
 };
 
-/*
+static irqreturn_t hi6421_spmi_irq_handler(int irq, void *priv)
- * The PMIC register is only 8-bit.
- * Hisilicon SoC use hardware to map PMIC register into SoC mapping.
- * At here, we are accessing SoC register with 32-bit.
- */
-int hi6421_spmi_pmic_read(struct hi6421_spmi_pmic *pmic, int reg)
 {
-	struct spmi_device *pdev;
+	struct hi6421_spmi_pmic *ddata = (struct hi6421_spmi_pmic *)priv;
-	u8 read_value = 0;
-	u32 ret;
-
-	pdev = to_spmi_device(pmic->dev);
-	if (!pdev) {
-		pr_err("%s: pdev get failed!\n", __func__);
-		return -ENODEV;
-	}
-
-	ret = spmi_ext_register_readl(pdev, reg, &read_value, 1);
-	if (ret) {
-		pr_err("%s: spmi_ext_register_readl failed!\n", __func__);
-		return ret;
-	}
-	return read_value;
-}
-EXPORT_SYMBOL(hi6421_spmi_pmic_read);
-
-int hi6421_spmi_pmic_write(struct hi6421_spmi_pmic *pmic, int reg, u32 val)
-{
-	struct spmi_device *pdev;
-	u32 ret;
-
-	pdev = to_spmi_device(pmic->dev);
-	if (!pdev) {
-		pr_err("%s: pdev get failed!\n", __func__);
-		return -ENODEV;
-	}
-
-	ret = spmi_ext_register_writel(pdev, reg, (unsigned char *)&val, 1);
-	if (ret)
-		pr_err("%s: spmi_ext_register_writel failed!\n", __func__);
-
-	return ret;
-}
-EXPORT_SYMBOL(hi6421_spmi_pmic_write);
-
-int hi6421_spmi_pmic_rmw(struct hi6421_spmi_pmic *pmic, int reg,
-			 u32 mask, u32 bits)
-{
-	unsigned long flags;
-	u32 data;
-	int ret;
-
-	spin_lock_irqsave(&pmic->lock, flags);
-	data = hi6421_spmi_pmic_read(pmic, reg) & ~mask;
-	data |= mask & bits;
-	ret = hi6421_spmi_pmic_write(pmic, reg, data);
-	spin_unlock_irqrestore(&pmic->lock, flags);
-
-	return ret;
-}
-EXPORT_SYMBOL(hi6421_spmi_pmic_rmw);
-
-static irqreturn_t hi6421_spmi_irq_handler(int irq, void *data)
-{
-	struct hi6421_spmi_pmic *pmic = (struct hi6421_spmi_pmic *)data;
 	unsigned long pending;
+	unsigned int in;
 	int i, offset;
 
 	for (i = 0; i < HISI_IRQ_ARRAY; i++) {
-		pending = hi6421_spmi_pmic_read(pmic, (i + SOC_PMIC_IRQ0_ADDR));
+		regmap_read(ddata->regmap, SOC_PMIC_IRQ0_ADDR + i, &in);
-		pending &= HISI_MASK_FIELD;
+		pending = HISI_MASK & in;
-		if (pending != 0)
+		regmap_write(ddata->regmap, SOC_PMIC_IRQ0_ADDR + i, pending);
-			pr_debug("pending[%d]=0x%lx\n\r", i, pending);
 
-		hi6421_spmi_pmic_write(pmic, (i + SOC_PMIC_IRQ0_ADDR), pending);
+		if (i == HISI_IRQ_KEY_NUM &&
-
+		    (pending & HISI_IRQ_KEY_VALUE) == HISI_IRQ_KEY_VALUE) {
-		/* solve powerkey order */
+			generic_handle_irq(ddata->irqs[POWERKEY_DOWN]);
-		if ((i == HISI_IRQ_KEY_NUM) &&
+			generic_handle_irq(ddata->irqs[POWERKEY_UP]);
-		    ((pending & HISI_IRQ_KEY_VALUE) == HISI_IRQ_KEY_VALUE)) {
-			generic_handle_irq(pmic->irqs[HISI_IRQ_KEY_DOWN]);
-			generic_handle_irq(pmic->irqs[HISI_IRQ_KEY_UP]);
 			pending &= (~HISI_IRQ_KEY_VALUE);
 		}
 
-		if (pending) {
+		if (!pending)
-			for_each_set_bit(offset, &pending, HISI_BITS)
+			continue;
-				generic_handle_irq(pmic->irqs[offset + i * HISI_BITS]);
+
-		}
+		for_each_set_bit(offset, &pending, HISI_BITS)
+			generic_handle_irq(ddata->irqs[offset + i * HISI_BITS]);
 	}
 
 	return IRQ_HANDLED;
@@ -154,34 +110,38 @@ static irqreturn_t hi6421_spmi_irq_handler(int irq, void *data)
 
 static void hi6421_spmi_irq_mask(struct irq_data *d)
 {
-	struct hi6421_spmi_pmic *pmic = irq_data_get_irq_chip_data(d);
+	struct hi6421_spmi_pmic *ddata = irq_data_get_irq_chip_data(d);
-	u32 data, offset;
 	unsigned long flags;
+	unsigned int data;
+	u32 offset;
 
-	offset = (irqd_to_hwirq(d) >> 3);
+	offset = IRQ_MASK_REGISTER(d);
-	offset += SOC_PMIC_IRQ_MASK_0_ADDR;
 
-	spin_lock_irqsave(&pmic->lock, flags);
+	spin_lock_irqsave(&ddata->lock, flags);
-	data = hi6421_spmi_pmic_read(pmic, offset);
+
-	data |= (1 << (irqd_to_hwirq(d) & 0x07));
+	regmap_read(ddata->regmap, offset, &data);
-	hi6421_spmi_pmic_write(pmic, offset, data);
+	data |= IRQ_MASK_BIT(d);
-	spin_unlock_irqrestore(&pmic->lock, flags);
+	regmap_write(ddata->regmap, offset, data);
+
+	spin_unlock_irqrestore(&ddata->lock, flags);
 }
 
 static void hi6421_spmi_irq_unmask(struct irq_data *d)
 {
-	struct hi6421_spmi_pmic *pmic = irq_data_get_irq_chip_data(d);
+	struct hi6421_spmi_pmic *ddata = irq_data_get_irq_chip_data(d);
 	u32 data, offset;
 	unsigned long flags;
 
 	offset = (irqd_to_hwirq(d) >> 3);
 	offset += SOC_PMIC_IRQ_MASK_0_ADDR;
 
-	spin_lock_irqsave(&pmic->lock, flags);
+	spin_lock_irqsave(&ddata->lock, flags);
-	data = hi6421_spmi_pmic_read(pmic, offset);
+
+	regmap_read(ddata->regmap, offset, &data);
 	data &= ~(1 << (irqd_to_hwirq(d) & 0x07));
-	hi6421_spmi_pmic_write(pmic, offset, data);
+	regmap_write(ddata->regmap, offset, data);
-	spin_unlock_irqrestore(&pmic->lock, flags);
+
+	spin_unlock_irqrestore(&ddata->lock, flags);
 }
 
 static struct irq_chip hi6421_spmi_pmu_irqchip = {
@@ -195,11 +155,11 @@ static struct irq_chip hi6421_spmi_pmu_irqchip = {
 static int hi6421_spmi_irq_map(struct irq_domain *d, unsigned int virq,
 			       irq_hw_number_t hw)
 {
-	struct hi6421_spmi_pmic *pmic = d->host_data;
+	struct hi6421_spmi_pmic *ddata = d->host_data;
 
 	irq_set_chip_and_handler_name(virq, &hi6421_spmi_pmu_irqchip,
 				      handle_simple_irq, "hisi");
-	irq_set_chip_data(virq, pmic);
+	irq_set_chip_data(virq, ddata);
 	irq_set_irq_type(virq, IRQ_TYPE_NONE);
 
 	return 0;
@@ -210,118 +170,111 @@ static const struct irq_domain_ops hi6421_spmi_domain_ops = {
 	.xlate	= irq_domain_xlate_twocell,
 };
 
-static void hi6421_spmi_pmic_irq_prc(struct hi6421_spmi_pmic *pmic)
+static void hi6421_spmi_pmic_irq_init(struct hi6421_spmi_pmic *ddata)
 {
-	int i, pending;
+	int i;
+	unsigned int pending;
 
-	for (i = 0 ; i < HISI_IRQ_ARRAY; i++)
+	for (i = 0; i < HISI_IRQ_ARRAY; i++)
-		hi6421_spmi_pmic_write(pmic, SOC_PMIC_IRQ_MASK_0_ADDR + i,
+		regmap_write(ddata->regmap, SOC_PMIC_IRQ_MASK_0_ADDR + i,
-				       HISI_MASK_STATE);
+			     HISI_MASK);
 
-	for (i = 0 ; i < HISI_IRQ_ARRAY; i++) {
+	for (i = 0; i < HISI_IRQ_ARRAY; i++) {
-		pending = hi6421_spmi_pmic_read(pmic, SOC_PMIC_IRQ0_ADDR + i);
+		regmap_read(ddata->regmap, SOC_PMIC_IRQ0_ADDR + i, &pending);
-
+		regmap_write(ddata->regmap, SOC_PMIC_IRQ0_ADDR + i,
-		pr_debug("PMU IRQ address value:irq[0x%x] = 0x%x\n",
+			     HISI_MASK);
-			 SOC_PMIC_IRQ0_ADDR + i, pending);
-		hi6421_spmi_pmic_write(pmic, SOC_PMIC_IRQ0_ADDR + i,
-				       HISI_MASK_STATE);
 	}
 }
 
+static const struct regmap_config regmap_config = {
+	.reg_bits		= 16,
+	.val_bits		= HISI_BITS,
+	.max_register		= 0xffff,
+	.fast_io		= true
+};
+
 static int hi6421_spmi_pmic_probe(struct spmi_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	struct hi6421_spmi_pmic *pmic;
+	struct hi6421_spmi_pmic *ddata;
 	unsigned int virq;
 	int ret, i;
 
-	pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
+	ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL);
-	if (!pmic)
+	if (!ddata)
 		return -ENOMEM;
 
-	spin_lock_init(&pmic->lock);
+	ddata->regmap = devm_regmap_init_spmi_ext(pdev, &regmap_config);
+	if (IS_ERR(ddata->regmap))
+		return PTR_ERR(ddata->regmap);
 
-	pmic->dev = dev;
+	spin_lock_init(&ddata->lock);
 
-	pmic->gpio = of_get_gpio(np, 0);
+	ddata->dev = dev;
-	if (pmic->gpio < 0)
-		return pmic->gpio;
 
-	if (!gpio_is_valid(pmic->gpio))
+	ddata->gpio = of_get_gpio(np, 0);
+	if (ddata->gpio < 0)
+		return ddata->gpio;
+
+	if (!gpio_is_valid(ddata->gpio))
 		return -EINVAL;
 
-	ret = devm_gpio_request_one(dev, pmic->gpio, GPIOF_IN, "pmic");
+	ret = devm_gpio_request_one(dev, ddata->gpio, GPIOF_IN, "pmic");
 	if (ret < 0) {
-		dev_err(dev, "failed to request gpio%d\n", pmic->gpio);
+		dev_err(dev, "Failed to request gpio%d\n", ddata->gpio);
 		return ret;
 	}
 
-	pmic->irq = gpio_to_irq(pmic->gpio);
+	ddata->irq = gpio_to_irq(ddata->gpio);
 
-	hi6421_spmi_pmic_irq_prc(pmic);
+	hi6421_spmi_pmic_irq_init(ddata);
 
-	pmic->irqs = devm_kzalloc(dev, HISI_IRQ_NUM * sizeof(int), GFP_KERNEL);
+	ddata->irqs = devm_kzalloc(dev, HISI_IRQ_NUM * sizeof(int), GFP_KERNEL);
-	if (!pmic->irqs) {
+	if (!ddata->irqs)
-		ret = -ENOMEM;
+		return -ENOMEM;
-		goto irq_malloc;
-	}
 
-	pmic->domain = irq_domain_add_simple(np, HISI_IRQ_NUM, 0,
+	ddata->domain = irq_domain_add_simple(np, HISI_IRQ_NUM, 0,
-					     &hi6421_spmi_domain_ops, pmic);
+					      &hi6421_spmi_domain_ops, ddata);
-	if (!pmic->domain) {
+	if (!ddata->domain) {
-		dev_err(dev, "failed irq domain add simple!\n");
+		dev_err(dev, "Failed to create IRQ domain\n");
-		ret = -ENODEV;
+		return -ENODEV;
-		goto irq_malloc;
 	}
 
 	for (i = 0; i < HISI_IRQ_NUM; i++) {
-		virq = irq_create_mapping(pmic->domain, i);
+		virq = irq_create_mapping(ddata->domain, i);
 		if (!virq) {
-			dev_err(dev, "Failed mapping hwirq\n");
+			dev_err(dev, "Failed to map H/W IRQ\n");
-			ret = -ENOSPC;
+			return -ENOSPC;
-			goto irq_malloc;
 		}
-		pmic->irqs[i] = virq;
+		ddata->irqs[i] = virq;
-		dev_dbg(dev, "%s: pmic->irqs[%d] = %d\n",
-			__func__, i, pmic->irqs[i]);
 	}
 
-	ret = request_threaded_irq(pmic->irq, hi6421_spmi_irq_handler, NULL,
+	ret = request_threaded_irq(ddata->irq, hi6421_spmi_irq_handler, NULL,
 				   IRQF_TRIGGER_LOW | IRQF_SHARED | IRQF_NO_SUSPEND,
-				   "pmic", pmic);
+				   "pmic", ddata);
 	if (ret < 0) {
-		dev_err(dev, "could not claim pmic IRQ: error %d\n", ret);
+		dev_err(dev, "Failed to start IRQ handling thread: error %d\n",
-		goto irq_malloc;
+			ret);
+		return ret;
 	}
 
-	dev_set_drvdata(&pdev->dev, pmic);
+	dev_set_drvdata(&pdev->dev, ddata);
 
-	/*
-	 * The logic below will rely that the pmic is already stored at
-	 * drvdata.
-	 */
-	dev_dbg(&pdev->dev, "SPMI-PMIC: adding children for %pOF\n",
-		pdev->dev.of_node);
 	ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
 				   hi6421v600_devs, ARRAY_SIZE(hi6421v600_devs),
 				   NULL, 0, NULL);
-	if (!ret)
+	if (ret < 0)
-		return 0;
+		dev_err(dev, "Failed to add child devices: %d\n", ret);
-
-	dev_err(dev, "Failed to add child devices: %d\n", ret);
-
-irq_malloc:
-	free_irq(pmic->irq, pmic);
 
 	return ret;
 }
 
 static void hi6421_spmi_pmic_remove(struct spmi_device *pdev)
 {
-	struct hi6421_spmi_pmic *pmic = dev_get_drvdata(&pdev->dev);
+	struct hi6421_spmi_pmic *ddata = dev_get_drvdata(&pdev->dev);
 
-	free_irq(pmic->irq, pmic);
+	free_irq(ddata->irq, ddata);
 }
 
 static const struct of_device_id pmic_spmi_id_table[] = {

drivers/staging/hikey9xx/hi6421v600-regulator.c

@@ -1,183 +1,148 @@
 // SPDX-License-Identifier: GPL-2.0
-/*
+//
- * Device driver for regulators in Hisi IC
+// Device driver for regulators in Hisi IC
- *
+//
- * Copyright (c) 2013 Linaro Ltd.
+// Copyright (c) 2013 Linaro Ltd.
- * Copyright (c) 2011 Hisilicon.
+// Copyright (c) 2011 Hisilicon.
- *
+// Copyright (c) 2020-2021 Huawei Technologies Co., Ltd
- * Guodong Xu <guodong.xu@linaro.org>
+//
- *
+// Guodong Xu <guodong.xu@linaro.org>
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
 
 #include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/io.h>
 #include <linux/mfd/hi6421-spmi-pmic.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
-#include <linux/regulator/machine.h>
-#include <linux/regulator/of_regulator.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
 #include <linux/spmi.h>
-#include <linux/time.h>
-#include <linux/uaccess.h>
 
-#define rdev_dbg(rdev, fmt, arg...)	\
+struct hi6421_spmi_reg_info {
-		 pr_debug("%s: %s: " fmt, (rdev)->desc->name, __func__, ##arg)
+	struct regulator_desc	desc;
-
-struct hi6421v600_regulator {
-	struct regulator_desc rdesc;
 	struct hi6421_spmi_pmic *pmic;
-	u32 eco_mode_mask, eco_uA;
+	u8			eco_mode_mask;
+	u32			eco_uA;
+
+	/* Serialize regulator enable logic */
+	struct mutex enable_mutex;
 };
 
-static DEFINE_MUTEX(enable_mutex);
+static const unsigned int ldo3_voltages[] = {
+	1500000, 1550000, 1600000, 1650000,
+	1700000, 1725000, 1750000, 1775000,
+	1800000, 1825000, 1850000, 1875000,
+	1900000, 1925000, 1950000, 2000000
+};
 
-/*
+static const unsigned int ldo4_voltages[] = {
- * helper function to ensure when it returns it is at least 'delay_us'
+	1725000, 1750000, 1775000, 1800000,
- * microseconds after 'since'.
+	1825000, 1850000, 1875000, 1900000
+};
+
+static const unsigned int ldo9_voltages[] = {
+	1750000, 1800000, 1825000, 2800000,
+	2850000, 2950000, 3000000, 3300000
+};
+
+static const unsigned int ldo15_voltages[] = {
+	1800000, 1850000, 2400000, 2600000,
+	2700000, 2850000, 2950000, 3000000
+};
+
+static const unsigned int ldo17_voltages[] = {
+	2500000, 2600000, 2700000, 2800000,
+	3000000, 3100000, 3200000, 3300000
+};
+
+static const unsigned int ldo34_voltages[] = {
+	2600000, 2700000, 2800000, 2900000,
+	3000000, 3100000, 3200000, 3300000
+};
+
+/**
+ * HI6421V600_LDO() - specify a LDO power line
+ * @_id: LDO id name string
+ * @vtable: voltage table
+ * @ereg: enable register
+ * @emask: enable mask
+ * @vreg: voltage select register
+ * @odelay: off/on delay time in uS
+ * @etime: enable time in uS
+ * @ecomask: eco mode mask
+ * @ecoamp: eco mode load uppler limit in uA
  */
-
+#define HI6421V600_LDO(_id, vtable, ereg, emask, vreg,			       \
-static int hi6421_spmi_regulator_is_enabled(struct regulator_dev *rdev)
+		       odelay, etime, ecomask, ecoamp)			       \
-{
+	[HI6421V600_##_id] = {						       \
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
+		.desc = {						       \
-	struct hi6421_spmi_pmic *pmic = sreg->pmic;
+			.name		= #_id,				       \
-	u32 reg_val;
+			.of_match        = of_match_ptr(#_id),		       \
-
+			.regulators_node = of_match_ptr("regulators"),	       \
-	reg_val = hi6421_spmi_pmic_read(pmic, rdev->desc->enable_reg);
+			.ops		= &hi6421_spmi_ldo_rops,	       \
-
+			.type		= REGULATOR_VOLTAGE,		       \
-	rdev_dbg(rdev,
+			.id		= HI6421V600_##_id,		       \
-		 "enable_reg=0x%x, val= 0x%x, enable_state=%d\n",
+			.owner		= THIS_MODULE,			       \
-		 rdev->desc->enable_reg,
+			.volt_table	= vtable,			       \
-		 reg_val, (reg_val & rdev->desc->enable_mask));
+			.n_voltages	= ARRAY_SIZE(vtable),		       \
-
+			.vsel_mask	= (1 << (ARRAY_SIZE(vtable) - 1)) - 1, \
-	return ((reg_val & rdev->desc->enable_mask) != 0);
+			.vsel_reg	= vreg,				       \
-}
+			.enable_reg	= ereg,				       \
+			.enable_mask	= emask,			       \
+			.enable_time	= etime,			       \
+			.ramp_delay	= etime,			       \
+			.off_on_delay	= odelay,			       \
+		},							       \
+		.eco_mode_mask		= ecomask,			       \
+		.eco_uA			= ecoamp,			       \
+	}
 
 static int hi6421_spmi_regulator_enable(struct regulator_dev *rdev)
 {
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
+	struct hi6421_spmi_reg_info *sreg = rdev_get_drvdata(rdev);
 	struct hi6421_spmi_pmic *pmic = sreg->pmic;
+	int ret;
 
 	/* cannot enable more than one regulator at one time */
-	mutex_lock(&enable_mutex);
+	mutex_lock(&sreg->enable_mutex);
-	usleep_range(HISI_REGS_ENA_PROTECT_TIME,
-		     HISI_REGS_ENA_PROTECT_TIME + 1000);
 
-	/* set enable register */
+	ret = regmap_update_bits(pmic->regmap, rdev->desc->enable_reg,
-	rdev_dbg(rdev,
+				 rdev->desc->enable_mask,
-		 "off_on_delay=%d us, enable_reg=0x%x, enable_mask=0x%x\n",
+				 rdev->desc->enable_mask);
-		 rdev->desc->off_on_delay, rdev->desc->enable_reg,
-		 rdev->desc->enable_mask);
 
-	hi6421_spmi_pmic_rmw(pmic, rdev->desc->enable_reg,
+	/* Avoid powering up multiple devices at the same time */
-			     rdev->desc->enable_mask,
+	usleep_range(rdev->desc->off_on_delay, rdev->desc->off_on_delay + 60);
-			     rdev->desc->enable_mask);
 
-	mutex_unlock(&enable_mutex);
+	mutex_unlock(&sreg->enable_mutex);
 
-	return 0;
+	return ret;
 }
 
 static int hi6421_spmi_regulator_disable(struct regulator_dev *rdev)
 {
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
+	struct hi6421_spmi_reg_info *sreg = rdev_get_drvdata(rdev);
 	struct hi6421_spmi_pmic *pmic = sreg->pmic;
 
-	/* set enable register to 0 */
+	return regmap_update_bits(pmic->regmap, rdev->desc->enable_reg,
-	rdev_dbg(rdev, "enable_reg=0x%x, enable_mask=0x%x\n",
+				  rdev->desc->enable_mask, 0);
-		 rdev->desc->enable_reg, rdev->desc->enable_mask);
-
-	hi6421_spmi_pmic_rmw(pmic, rdev->desc->enable_reg,
-			     rdev->desc->enable_mask, 0);
-
-	return 0;
-}
-
-static int hi6421_spmi_regulator_get_voltage_sel(struct regulator_dev *rdev)
-{
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
-	struct hi6421_spmi_pmic *pmic = sreg->pmic;
-	u32 reg_val, selector;
-
-	/* get voltage selector */
-	reg_val = hi6421_spmi_pmic_read(pmic, rdev->desc->vsel_reg);
-
-	selector = (reg_val & rdev->desc->vsel_mask) >>	(ffs(rdev->desc->vsel_mask) - 1);
-
-	rdev_dbg(rdev,
-		 "vsel_reg=0x%x, value=0x%x, entry=0x%x, voltage=%d mV\n",
-		 rdev->desc->vsel_reg, reg_val, selector,
-		rdev->desc->ops->list_voltage(rdev, selector) / 1000);
-
-	return selector;
-}
-
-static int hi6421_spmi_regulator_set_voltage_sel(struct regulator_dev *rdev,
-						 unsigned int selector)
-{
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
-	struct hi6421_spmi_pmic *pmic = sreg->pmic;
-	u32 reg_val;
-
-	if (unlikely(selector >= rdev->desc->n_voltages))
-		return -EINVAL;
-
-	reg_val = selector << (ffs(rdev->desc->vsel_mask) - 1);
-
-	/* set voltage selector */
-	rdev_dbg(rdev,
-		 "vsel_reg=0x%x, mask=0x%x, value=0x%x, voltage=%d mV\n",
-		 rdev->desc->vsel_reg, rdev->desc->vsel_mask, reg_val,
-		 rdev->desc->ops->list_voltage(rdev, selector) / 1000);
-
-	hi6421_spmi_pmic_rmw(pmic, rdev->desc->vsel_reg,
-			     rdev->desc->vsel_mask, reg_val);
-
-	return 0;
 }
 
 static unsigned int hi6421_spmi_regulator_get_mode(struct regulator_dev *rdev)
 {
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
+	struct hi6421_spmi_reg_info *sreg = rdev_get_drvdata(rdev);
 	struct hi6421_spmi_pmic *pmic = sreg->pmic;
-	unsigned int mode;
 	u32 reg_val;
 
-	reg_val = hi6421_spmi_pmic_read(pmic, rdev->desc->enable_reg);
+	regmap_read(pmic->regmap, rdev->desc->enable_reg, &reg_val);
 
 	if (reg_val & sreg->eco_mode_mask)
-		mode = REGULATOR_MODE_IDLE;
+		return REGULATOR_MODE_IDLE;
-	else
-		mode = REGULATOR_MODE_NORMAL;
 
-	rdev_dbg(rdev,
+	return REGULATOR_MODE_NORMAL;
-		 "enable_reg=0x%x, eco_mode_mask=0x%x, reg_val=0x%x, %s mode\n",
-		 rdev->desc->enable_reg, sreg->eco_mode_mask, reg_val,
-		 mode == REGULATOR_MODE_IDLE ? "idle" : "normal");
-
-	return mode;
 }
 
 static int hi6421_spmi_regulator_set_mode(struct regulator_dev *rdev,
 					  unsigned int mode)
 {
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
+	struct hi6421_spmi_reg_info *sreg = rdev_get_drvdata(rdev);
 	struct hi6421_spmi_pmic *pmic = sreg->pmic;
 	u32 val;
 
@@ -192,14 +157,8 @@ static int hi6421_spmi_regulator_set_mode(struct regulator_dev *rdev,
 		return -EINVAL;
 	}
 
-	/* set mode */
+	return regmap_update_bits(pmic->regmap, rdev->desc->enable_reg,
-	rdev_dbg(rdev, "enable_reg=0x%x, eco_mode_mask=0x%x, value=0x%x\n",
+				  sreg->eco_mode_mask, val);
-		 rdev->desc->enable_reg, sreg->eco_mode_mask, val);
-
-	hi6421_spmi_pmic_rmw(pmic, rdev->desc->enable_reg,
-			     sreg->eco_mode_mask, val);
-
-	return 0;
 }
 
 static unsigned int
@@ -207,199 +166,84 @@ hi6421_spmi_regulator_get_optimum_mode(struct regulator_dev *rdev,
 				       int input_uV, int output_uV,
 				       int load_uA)
 {
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
+	struct hi6421_spmi_reg_info *sreg = rdev_get_drvdata(rdev);
 
-	if (load_uA || ((unsigned int)load_uA > sreg->eco_uA))
+	if (!sreg->eco_uA || ((unsigned int)load_uA > sreg->eco_uA))
 		return REGULATOR_MODE_NORMAL;
 
 	return REGULATOR_MODE_IDLE;
 }
 
-static int hi6421_spmi_dt_parse(struct platform_device *pdev,
-				struct hi6421v600_regulator *sreg,
-			 struct regulator_desc *rdesc)
-{
-	struct device *dev = &pdev->dev;
-	struct device_node *np = dev->of_node;
-	unsigned int *v_table;
-	int ret;
-
-	ret = of_property_read_u32(np, "reg", &rdesc->enable_reg);
-	if (ret) {
-		dev_err(dev, "missing reg property\n");
-		return ret;
-	}
-
-	ret = of_property_read_u32(np, "vsel-reg", &rdesc->vsel_reg);
-	if (ret) {
-		dev_err(dev, "missing vsel-reg property\n");
-		return ret;
-	}
-
-	ret = of_property_read_u32(np, "enable-mask", &rdesc->enable_mask);
-	if (ret) {
-		dev_err(dev, "missing enable-mask property\n");
-		return ret;
-	}
-
-	/*
-	 * Not all regulators work on idle mode
-	 */
-	ret = of_property_read_u32(np, "idle-mode-mask", &sreg->eco_mode_mask);
-	if (ret) {
-		dev_dbg(dev, "LDO doesn't support economy mode.\n");
-		sreg->eco_mode_mask = 0;
-		sreg->eco_uA = 0;
-	} else {
-		ret = of_property_read_u32(np, "eco-microamp", &sreg->eco_uA);
-		if (ret) {
-			dev_err(dev, "missing eco-microamp property\n");
-			return ret;
-		}
-	}
-
-	/* parse .off-on-delay */
-	ret = of_property_read_u32(np, "off-on-delay-us",
-				   &rdesc->off_on_delay);
-	if (ret) {
-		dev_err(dev, "missing off-on-delay-us property\n");
-		return ret;
-	}
-
-	/* parse .enable_time */
-	ret = of_property_read_u32(np, "startup-delay-us",
-				   &rdesc->enable_time);
-	if (ret) {
-		dev_err(dev, "missing startup-delay-us property\n");
-		return ret;
-	}
-
-	/* FIXME: are there a better value for this? */
-	rdesc->ramp_delay = rdesc->enable_time;
-
-	/* parse volt_table */
-
-	rdesc->n_voltages = of_property_count_u32_elems(np, "voltage-table");
-
-	v_table = devm_kzalloc(dev, sizeof(unsigned int) * rdesc->n_voltages,
-			       GFP_KERNEL);
-	if (unlikely(!v_table))
-		return  -ENOMEM;
-	rdesc->volt_table = v_table;
-
-	ret = of_property_read_u32_array(np, "voltage-table",
-					 v_table, rdesc->n_voltages);
-	if (ret) {
-		dev_err(dev, "missing voltage-table property\n");
-		return ret;
-	}
-
-	/*
-	 * Instead of explicitly requiring a mask for the voltage selector,
-	 * as they all start from bit zero (at least on the known LDOs),
-	 * just use the number of voltages at the voltage table, getting the
-	 * minimal mask that would pick everything.
-	 */
-	rdesc->vsel_mask = (1 << (fls(rdesc->n_voltages) - 1)) - 1;
-
-	dev_dbg(dev, "voltage selector settings: reg: 0x%x, mask: 0x%x\n",
-		rdesc->vsel_reg, rdesc->vsel_mask);
-
-	return 0;
-}
-
 static const struct regulator_ops hi6421_spmi_ldo_rops = {
-	.is_enabled = hi6421_spmi_regulator_is_enabled,
+	.is_enabled = regulator_is_enabled_regmap,
 	.enable = hi6421_spmi_regulator_enable,
 	.disable = hi6421_spmi_regulator_disable,
 	.list_voltage = regulator_list_voltage_table,
 	.map_voltage = regulator_map_voltage_iterate,
-	.get_voltage_sel = hi6421_spmi_regulator_get_voltage_sel,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
-	.set_voltage_sel = hi6421_spmi_regulator_set_voltage_sel,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
 	.get_mode = hi6421_spmi_regulator_get_mode,
 	.set_mode = hi6421_spmi_regulator_set_mode,
 	.get_optimum_mode = hi6421_spmi_regulator_get_optimum_mode,
 };
 
-static int hi6421_spmi_regulator_probe_ldo(struct platform_device *pdev,
+/* HI6421v600 regulators with known registers */
-					   struct device_node *np,
+enum hi6421_spmi_regulator_id {
-					   struct hi6421_spmi_pmic *pmic)
+	HI6421V600_LDO3,
-{
+	HI6421V600_LDO4,
-	struct regulation_constraints *constraint;
+	HI6421V600_LDO9,
-	struct regulator_init_data *initdata;
+	HI6421V600_LDO15,
-	struct regulator_config config = { };
+	HI6421V600_LDO16,
-	struct hi6421v600_regulator *sreg;
+	HI6421V600_LDO17,
-	struct device *dev = &pdev->dev;
+	HI6421V600_LDO33,
-	struct regulator_desc *rdesc;
+	HI6421V600_LDO34,
-	struct regulator_dev *rdev;
+};
-	const char *supplyname;
-	int ret;
 
-	initdata = of_get_regulator_init_data(dev, np, NULL);
+static struct hi6421_spmi_reg_info regulator_info[] = {
-	if (!initdata) {
+	HI6421V600_LDO(LDO3, ldo3_voltages,
-		dev_err(dev, "failed to get regulator data\n");
+		       0x16, 0x01, 0x51,
-		return -EINVAL;
+		       20000, 120,
-	}
+		       0, 0),
-
+	HI6421V600_LDO(LDO4, ldo4_voltages,
-	sreg = devm_kzalloc(dev, sizeof(*sreg), GFP_KERNEL);
+		       0x17, 0x01, 0x52,
-	if (!sreg)
+		       20000, 120,
-		return -ENOMEM;
+		       0x10, 10000),
-
+	HI6421V600_LDO(LDO9, ldo9_voltages,
-	sreg->pmic = pmic;
+		       0x1c, 0x01, 0x57,
-	rdesc = &sreg->rdesc;
+		       20000, 360,
-
+		       0x10, 10000),
-	rdesc->name = initdata->constraints.name;
+	HI6421V600_LDO(LDO15, ldo15_voltages,
-	rdesc->ops = &hi6421_spmi_ldo_rops;
+		       0x21, 0x01, 0x5c,
-	rdesc->type = REGULATOR_VOLTAGE;
+		       20000, 360,
-	rdesc->min_uV = initdata->constraints.min_uV;
+		       0x10, 10000),
-
+	HI6421V600_LDO(LDO16, ldo15_voltages,
-	supplyname = of_get_property(np, "supply_name", NULL);
+		       0x22, 0x01, 0x5d,
-	if (supplyname)
+		       20000, 360,
-		initdata->supply_regulator = supplyname;
+		       0x10, 10000),
-
+	HI6421V600_LDO(LDO17, ldo17_voltages,
-	/* parse device tree data for regulator specific */
+		       0x23, 0x01, 0x5e,
-	ret = hi6421_spmi_dt_parse(pdev, sreg, rdesc);
+		       20000, 120,
-	if (ret)
+		       0x10, 10000),
-		return ret;
+	HI6421V600_LDO(LDO33, ldo17_voltages,
-
+		       0x32, 0x01, 0x6d,
-	/* hisi regulator supports two modes */
+		       20000, 120,
-	constraint = &initdata->constraints;
+		       0, 0),
-
+	HI6421V600_LDO(LDO34, ldo34_voltages,
-	constraint->valid_modes_mask = REGULATOR_MODE_NORMAL;
+		       0x33, 0x01, 0x6e,
-	if (sreg->eco_mode_mask) {
+		       20000, 120,
-		constraint->valid_modes_mask |= REGULATOR_MODE_IDLE;
+		       0, 0),
-		constraint->valid_ops_mask |= REGULATOR_CHANGE_MODE;
+};
-	}
-
-	config.dev = &pdev->dev;
-	config.init_data = initdata;
-	config.driver_data = sreg;
-	config.of_node = pdev->dev.of_node;
-
-	/* register regulator */
-	rdev = regulator_register(rdesc, &config);
-	if (IS_ERR(rdev)) {
-		dev_err(dev, "failed to register %s\n",
-			rdesc->name);
-		return PTR_ERR(rdev);
-	}
-
-	rdev_dbg(rdev, "valid_modes_mask: 0x%x, valid_ops_mask: 0x%x\n",
-		 constraint->valid_modes_mask, constraint->valid_ops_mask);
-
-	dev_set_drvdata(dev, rdev);
-
-	return 0;
-}
 
 static int hi6421_spmi_regulator_probe(struct platform_device *pdev)
 {
 	struct device *pmic_dev = pdev->dev.parent;
-	struct device_node *np = pmic_dev->of_node;
+	struct regulator_config config = { };
-	struct device_node *regulators, *child;
+	struct hi6421_spmi_reg_info *sreg;
-	struct platform_device *new_pdev;
+	struct hi6421_spmi_reg_info *info;
+	struct device *dev = &pdev->dev;
 	struct hi6421_spmi_pmic *pmic;
-	int ret;
+	struct regulator_dev *rdev;
+	int i;
 
 	/*
 	 * This driver is meant to be called by hi6421-spmi-core,
@@ -410,69 +254,46 @@ static int hi6421_spmi_regulator_probe(struct platform_device *pdev)
 	if (WARN_ON(!pmic))
 		return -ENODEV;
 
-	regulators = of_get_child_by_name(np, "regulators");
+	sreg = devm_kzalloc(dev, sizeof(*sreg), GFP_KERNEL);
-	if (!regulators) {
+	if (!sreg)
-		dev_err(&pdev->dev, "regulator node not found\n");
+		return -ENOMEM;
-		return -ENODEV;
-	}
 
-	/*
+	sreg->pmic = pmic;
-	 * Parse all LDO regulator nodes
+	mutex_init(&sreg->enable_mutex);
-	 */
-	for_each_child_of_node(regulators, child) {
-		dev_dbg(&pdev->dev, "adding child %pOF\n", child);
 
-		new_pdev = platform_device_alloc(child->name, -1);
+	for (i = 0; i < ARRAY_SIZE(regulator_info); i++) {
-		new_pdev->dev.parent = pmic_dev;
+		info = &regulator_info[i];
-		new_pdev->dev.of_node = of_node_get(child);
 
-		ret = platform_device_add(new_pdev);
+		config.dev = pdev->dev.parent;
-		if (ret < 0) {
+		config.driver_data = sreg;
-			platform_device_put(new_pdev);
+		config.regmap = pmic->regmap;
-			continue;
+
+		rdev = devm_regulator_register(dev, &info->desc, &config);
+		if (IS_ERR(rdev)) {
+			dev_err(dev, "failed to register %s\n",
+				info->desc.name);
+			return PTR_ERR(rdev);
 		}
-
-		ret = hi6421_spmi_regulator_probe_ldo(new_pdev, child, pmic);
-		if (ret < 0)
-			platform_device_put(new_pdev);
 	}
 
-	of_node_put(regulators);
-
 	return 0;
 }
 
-static int hi6421_spmi_regulator_remove(struct platform_device *pdev)
+static const struct platform_device_id hi6421_spmi_regulator_table[] = {
-{
-	struct regulator_dev *rdev = dev_get_drvdata(&pdev->dev);
-	struct hi6421v600_regulator *sreg = rdev_get_drvdata(rdev);
-
-	regulator_unregister(rdev);
-
-	if (rdev->desc->volt_table)
-		devm_kfree(&pdev->dev, (unsigned int *)rdev->desc->volt_table);
-
-	kfree(sreg);
-
-	return 0;
-}
-
-static const struct platform_device_id hi6421v600_regulator_table[] = {
 	{ .name = "hi6421v600-regulator" },
 	{},
 };
-MODULE_DEVICE_TABLE(platform, hi6421v600_regulator_table);
+MODULE_DEVICE_TABLE(platform, hi6421_spmi_regulator_table);
 
-static struct platform_driver hi6421v600_regulator_driver = {
+static struct platform_driver hi6421_spmi_regulator_driver = {
-	.id_table = hi6421v600_regulator_table,
+	.id_table = hi6421_spmi_regulator_table,
 	.driver = {
-		.name	= "hi6421v600-regulator",
+		.name = "hi6421v600-regulator",
 	},
 	.probe	= hi6421_spmi_regulator_probe,
-	.remove	= hi6421_spmi_regulator_remove,
 };
-module_platform_driver(hi6421v600_regulator_driver);
+module_platform_driver(hi6421_spmi_regulator_driver);
 
-MODULE_DESCRIPTION("Hi6421v600 regulator driver");
+MODULE_DESCRIPTION("Hi6421v600 SPMI regulator driver");
 MODULE_LICENSE("GPL v2");
 

drivers/staging/hikey9xx/hisilicon,hi6421-spmi-pmic.yaml

@@ -55,52 +55,13 @@ properties:
 
         $ref: "/schemas/regulator/regulator.yaml#"
 
-        properties:
-          reg:
-            description: Enable register.
-
-          '#address-cells':
-            const: 1
-
-          '#size-cells':
-            const: 0
-
-          vsel-reg:
-            description: Voltage selector register.
-
-          enable-mask:
-            description: Bitmask used to enable the regulator.
-
-          voltage-table:
-            description: Table with the selector items for the voltage regulator.
-            minItems: 2
-            maxItems: 16
-
-          off-on-delay-us:
-            description: Time required for changing state to enabled in microseconds.
-
-          startup-delay-us:
-            description: Startup time in microseconds.
-
-          idle-mode-mask:
-            description: Bitmask used to put the regulator on idle mode.
-
-          eco-microamp:
-            description: Maximum current while on idle mode.
-
-        required:
-          - reg
-          - vsel-reg
-          - enable-mask
-          - voltage-table
-          - off-on-delay-us
-          - startup-delay-us
-
 required:
   - compatible
   - reg
   - regulators
 
+additionalProperties: false
+
 examples:
   - |
     /* pmic properties */
@@ -117,43 +78,58 @@ examples:
         #address-cells = <1>;
         #size-cells = <0>;
 
-        ldo3: ldo3@16 {
+        ldo3: LDO3 {
-          reg = <0x16>;
-          vsel-reg = <0x51>;
-
           regulator-name = "ldo3";
           regulator-min-microvolt = <1500000>;
           regulator-max-microvolt = <2000000>;
           regulator-boot-on;
-
-          enable-mask = <0x01>;
-
-          voltage-table = <1500000>, <1550000>, <1600000>, <1650000>,
-                          <1700000>, <1725000>, <1750000>, <1775000>,
-                          <1800000>, <1825000>, <1850000>, <1875000>,
-                          <1900000>, <1925000>, <1950000>, <2000000>;
-          off-on-delay-us = <20000>;
-          startup-delay-us = <120>;
         };
 
-        ldo4: ldo4@17 { /* 40 PIN */
+        ldo4: LDO4 {
-          reg = <0x17>;
-          vsel-reg = <0x52>;
-
           regulator-name = "ldo4";
           regulator-min-microvolt = <1725000>;
           regulator-max-microvolt = <1900000>;
           regulator-boot-on;
+        };
 
-          enable-mask = <0x01>;
+        ldo9: LDO9 {
-          idle-mode-mask = <0x10>;
+          regulator-name = "ldo9";
-          eco-microamp = <10000>;
+          regulator-min-microvolt = <1750000>;
+          regulator-max-microvolt = <3300000>;
+          regulator-boot-on;
+        };
 
-          hi6421-vsel = <0x52 0x07>;
+        ldo15: LDO15 {
-          voltage-table = <1725000>, <1750000>, <1775000>, <1800000>,
+          regulator-name = "ldo15";
-                          <1825000>, <1850000>, <1875000>, <1900000>;
+          regulator-min-microvolt = <1800000>;
-          off-on-delay-us = <20000>;
+          regulator-max-microvolt = <3000000>;
-          startup-delay-us = <120>;
+          regulator-always-on;
+        };
+
+        ldo16: LDO16 {
+          regulator-name = "ldo16";
+          regulator-min-microvolt = <1800000>;
+          regulator-max-microvolt = <3000000>;
+          regulator-boot-on;
+        };
+
+        ldo17: LDO17 {
+          regulator-name = "ldo17";
+          regulator-min-microvolt = <2500000>;
+          regulator-max-microvolt = <3300000>;
+        };
+
+        ldo33: LDO33 {
+          regulator-name = "ldo33";
+          regulator-min-microvolt = <2500000>;
+          regulator-max-microvolt = <3300000>;
+          regulator-boot-on;
+        };
+
+        ldo34: LDO34 {
+          regulator-name = "ldo34";
+          regulator-min-microvolt = <2600000>;
+          regulator-max-microvolt = <3300000>;
         };
       };
     };

drivers/staging/hikey9xx/hisilicon,hisi-spmi-controller.yaml

@@ -26,14 +26,22 @@ properties:
   reg:
     maxItems: 1
 
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 0
+
   spmi-channel:
     description: |
       number of the Kirin 970 SPMI channel where the SPMI devices are connected.
 
 required:
- - compatible
+  - compatible
- - reg
+  - reg
- - spmi-channel
+  - spmi-channel
+  - "#address-cells"
+  - "#size-cells"
 
 patternProperties:
   "^pmic@[0-9a-f]$":
@@ -43,6 +51,8 @@ patternProperties:
       are documented at
       drivers/staging/hikey9xx/hisilicon,hi6421-spmi-pmic.yaml.
 
+additionalProperties: false
+
 examples:
   - |
     bus {
@@ -51,11 +61,14 @@ examples:
 
       spmi: spmi@fff24000 {
         compatible = "hisilicon,kirin970-spmi-controller";
+        #address-cells = <2>;
+        #size-cells = <0>;
         status = "ok";
         reg = <0x0 0xfff24000 0x0 0x1000>;
         spmi-channel = <2>;
 
         pmic@0 {
+          reg = <0 0>;
           /* pmic properties */
         };
       };

drivers/staging/hikey9xx/phy-hi3670-usb3.c

@@ -8,6 +8,7 @@
  * Authors: Yu Chen <chenyu56@huawei.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/clk.h>
 #include <linux/kernel.h>
 #include <linux/mfd/syscon.h>
@@ -41,15 +42,15 @@
 #define SC_CLK_USB3PHY_3MUX1_SEL	BIT(25)
 
 #define USB3OTG_CTRL0			(0x00)
-#define USB3OTG_CTRL3			(0x0C)
+#define USB3OTG_CTRL3			(0x0c)
 #define USB3OTG_CTRL4			(0x10)
 #define USB3OTG_CTRL5			(0x14)
-#define USB3OTG_CTRL7			(0x1C)
+#define USB3OTG_CTRL7			(0x1c)
 #define USB_MISC_CFG50			(0x50)
 #define USB_MISC_CFG54			(0x54)
 #define USB_MISC_CFG58			(0x58)
-#define USB_MISC_CFG5C			(0x5C)
+#define USB_MISC_CFG5C			(0x5c)
-#define USB_MISC_CFGA0			(0xA0)
+#define USB_MISC_CFGA0			(0xa0)
 #define TCA_CLK_RST			(0x200)
 #define TCA_INTR_EN			(0x204)
 #define TCA_INTR_STS			(0x208)
@@ -66,14 +67,14 @@
 
 #define CTRL5_USB2_SIDDQ		BIT(0)
 
-#define CTRL7_USB2_REFCLKSEL_MASK	(3 << 3)
+#define CTRL7_USB2_REFCLKSEL_MASK	GENMASK(4, 3)
-#define CTRL7_USB2_REFCLKSEL_ABB	(3 << 3)
+#define CTRL7_USB2_REFCLKSEL_ABB	(BIT(4) | BIT(3))
-#define CTRL7_USB2_REFCLKSEL_PAD	(2 << 3)
+#define CTRL7_USB2_REFCLKSEL_PAD	BIT(4)
 
 #define CFG50_USB3_PHY_TEST_POWERDOWN	BIT(23)
 
-#define CFG54_USB31PHY_CR_ADDR_MASK	(0xFFFF)
+#define CFG54_USB31PHY_CR_ADDR_MASK	GENMASK(31, 16)
-#define CFG54_USB31PHY_CR_ADDR_SHIFT	(16)
+
 #define CFG54_USB3PHY_REF_USE_PAD	BIT(12)
 #define CFG54_PHY0_PMA_PWR_STABLE	BIT(11)
 #define CFG54_PHY0_PCS_PWR_STABLE	BIT(9)
@@ -84,8 +85,7 @@
 #define CFG54_USB31PHY_CR_CLK		BIT(2)
 #define CFG54_USB3_PHY0_ANA_PWR_EN	BIT(1)
 
-#define CFG58_USB31PHY_CR_DATA_MASK     (0xFFFF)
+#define CFG58_USB31PHY_CR_DATA_MASK     GENMASK(31, 16)
-#define CFG58_USB31PHY_CR_DATA_RD_START (16)
 
 #define CFG5C_USB3_PHY0_SS_MPLLA_SSC_EN	BIT(1)
 
@@ -102,20 +102,20 @@
 #define CLK_RST_SUSPEND_CLK_EN		BIT(0)
 
 #define GCFG_ROLE_HSTDEV		BIT(4)
-#define GCFG_OP_MODE			(3 << 0)
+#define GCFG_OP_MODE			GENMASK(1, 0)
 #define GCFG_OP_MODE_CTRL_SYNC_MODE	BIT(0)
 
 #define TCPC_VALID			BIT(4)
 #define TCPC_LOW_POWER_EN		BIT(3)
-#define TCPC_MUX_CONTROL_MASK		(3 << 0)
+#define TCPC_MUX_CONTROL_MASK		GENMASK(1, 0)
 #define TCPC_MUX_CONTROL_USB31		BIT(0)
 
 #define SYSMODE_CFG_TYPEC_DISABLE	BIT(3)
 
-#define VBUS_CTRL_POWERPRESENT_OVERRD	(3 << 2)
+#define VBUS_CTRL_POWERPRESENT_OVERRD	GENMASK(3, 2)
-#define VBUS_CTRL_VBUSVALID_OVERRD	(3 << 0)
+#define VBUS_CTRL_VBUSVALID_OVERRD	GENMASK(1, 0)
 
-#define KIRIN970_USB_DEFAULT_PHY_PARAM	(0xFDFEE4)
+#define KIRIN970_USB_DEFAULT_PHY_PARAM	(0xfdfee4)
 #define KIRIN970_USB_DEFAULT_PHY_VBOOST	(0x5)
 
 #define TX_VBOOST_LVL_REG		(0xf)
@@ -162,16 +162,14 @@ static int hi3670_phy_cr_set_sel(struct regmap *usb31misc)
 
 static int hi3670_phy_cr_start(struct regmap *usb31misc, int direction)
 {
-	int ret;
+	int ret, reg;
 
 	if (direction)
-		ret = regmap_update_bits(usb31misc, USB_MISC_CFG54,
+		reg = CFG54_USB31PHY_CR_WR_EN;
-					 CFG54_USB31PHY_CR_WR_EN,
-					 CFG54_USB31PHY_CR_WR_EN);
 	else
-		ret = regmap_update_bits(usb31misc, USB_MISC_CFG54,
+		reg = CFG54_USB31PHY_CR_RD_EN;
-					 CFG54_USB31PHY_CR_RD_EN,
+
-					 CFG54_USB31PHY_CR_RD_EN);
+	ret = regmap_update_bits(usb31misc, USB_MISC_CFG54, reg, reg);
 
 	if (ret)
 		return ret;
@@ -180,16 +178,14 @@ static int hi3670_phy_cr_start(struct regmap *usb31misc, int direction)
 	if (ret)
 		return ret;
 
-	ret = regmap_update_bits(usb31misc, USB_MISC_CFG54,
+	return regmap_update_bits(usb31misc, USB_MISC_CFG54,
-				 CFG54_USB31PHY_CR_RD_EN | CFG54_USB31PHY_CR_WR_EN, 0);
+				  CFG54_USB31PHY_CR_RD_EN | CFG54_USB31PHY_CR_WR_EN, 0);
-
-	return ret;
 }
 
 static int hi3670_phy_cr_wait_ack(struct regmap *usb31misc)
 {
 	u32 reg;
-	int retry = 100000;
+	int retry = 10;
 	int ret;
 
 	while (retry-- > 0) {
@@ -202,6 +198,8 @@ static int hi3670_phy_cr_wait_ack(struct regmap *usb31misc)
 		ret = hi3670_phy_cr_clk(usb31misc);
 		if (ret)
 			return ret;
+
+		usleep_range(10, 20);
 	}
 
 	return -ETIMEDOUT;
@@ -216,9 +214,9 @@ static int hi3670_phy_cr_set_addr(struct regmap *usb31misc, u32 addr)
 	if (ret)
 		return ret;
 
-	reg &= ~(CFG54_USB31PHY_CR_ADDR_MASK << CFG54_USB31PHY_CR_ADDR_SHIFT);
+	reg = FIELD_PREP(CFG54_USB31PHY_CR_ADDR_MASK, addr);
-	reg |= ((addr & CFG54_USB31PHY_CR_ADDR_MASK) << CFG54_USB31PHY_CR_ADDR_SHIFT);
+	ret = regmap_update_bits(usb31misc, USB_MISC_CFG54,
-	ret = regmap_write(usb31misc, USB_MISC_CFG54, reg);
+				 CFG54_USB31PHY_CR_ADDR_MASK, reg);
 
 	return ret;
 }
@@ -255,8 +253,7 @@ static int hi3670_phy_cr_read(struct regmap *usb31misc, u32 addr, u32 *val)
 	if (ret)
 		return ret;
 
-	*val = (reg >> CFG58_USB31PHY_CR_DATA_RD_START) &
+	*val = FIELD_GET(CFG58_USB31PHY_CR_DATA_MASK, reg);
-		CFG58_USB31PHY_CR_DATA_MASK;
 
 	return 0;
 }
@@ -281,7 +278,7 @@ static int hi3670_phy_cr_write(struct regmap *usb31misc, u32 addr, u32 val)
 		return ret;
 
 	ret = regmap_write(usb31misc, USB_MISC_CFG58,
-			   val & CFG58_USB31PHY_CR_DATA_MASK);
+			   FIELD_PREP(CFG58_USB31PHY_CR_DATA_MASK, val));
 	if (ret)
 		return ret;
 
@@ -329,24 +326,24 @@ static int hi3670_phy_set_params(struct hi3670_priv *priv)
 	return ret;
 }
 
-static int hi3670_is_abbclk_seleted(struct hi3670_priv *priv)
+static bool hi3670_is_abbclk_selected(struct hi3670_priv *priv)
 {
 	u32 reg;
 
 	if (!priv->sctrl) {
 		dev_err(priv->dev, "priv->sctrl is null!\n");
-		return 1;
+		return false;
 	}
 
 	if (regmap_read(priv->sctrl, SCTRL_SCDEEPSLEEPED, &reg)) {
 		dev_err(priv->dev, "SCTRL_SCDEEPSLEEPED read failed!\n");
-		return 1;
+		return false;
 	}
 
 	if ((reg & USB_CLK_SELECTED) == 0)
-		return 1;
+		return false;
 
-	return 0;
+	return true;
 }
 
 static int hi3670_config_phy_clock(struct hi3670_priv *priv)
@@ -354,7 +351,7 @@ static int hi3670_config_phy_clock(struct hi3670_priv *priv)
 	u32 val, mask;
 	int ret;
 
-	if (hi3670_is_abbclk_seleted(priv)) {
+	if (!hi3670_is_abbclk_selected(priv)) {
 		/* usb refclk iso disable */
 		ret = regmap_write(priv->peri_crg, PERI_CRG_ISODIS,
 				   USB_REFCLK_ISO_EN);
@@ -571,7 +568,7 @@ static int hi3670_phy_exit(struct phy *phy)
 	if (ret)
 		goto out;
 
-	if (hi3670_is_abbclk_seleted(priv)) {
+	if (!hi3670_is_abbclk_selected(priv)) {
 		/* disable usb_tcxo_en */
 		ret = regmap_write(priv->pctrl, PCTRL_PERI_CTRL3,
 				   USB_TCXO_EN << PCTRL_PERI_CTRL3_MSK_START);
@@ -588,7 +585,7 @@ out:
 	return ret;
 }
 
-static struct phy_ops hi3670_phy_ops = {
+static const struct phy_ops hi3670_phy_ops = {
 	.init		= hi3670_phy_init,
 	.exit		= hi3670_phy_exit,
 	.owner		= THIS_MODULE,

drivers/staging/hikey9xx/phy-hi3670-usb3.yaml

@@ -8,6 +8,7 @@ title: Hisilicon Kirin970 USB PHY
 
 maintainers:
   - Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+
 description: |+
   Bindings for USB3 PHY on HiSilicon Kirin 970.
 

drivers/staging/media/atomisp/pci/hmm/hmm.c

@@ -269,7 +269,7 @@ ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
 		hmm_set(bo->start, 0, bytes);
 
 	dev_dbg(atomisp_dev,
-		"%s: pages: 0x%08x (%ld bytes), type: %d from highmem %d, user ptr %p, cached %d\n",
+		"%s: pages: 0x%08x (%zu bytes), type: %d from highmem %d, user ptr %p, cached %d\n",
 		__func__, bo->start, bytes, type, from_highmem, userptr, cached);
 
 	return bo->start;

drivers/staging/most/net/net.c

@@ -68,7 +68,7 @@ struct net_dev_context {
 };
 
 static struct list_head net_devices = LIST_HEAD_INIT(net_devices);
-static struct mutex probe_disc_mt; /* ch->linked = true, most_nd_open */
+static DEFINE_MUTEX(probe_disc_mt); /* ch->linked = true, most_nd_open */
 static DEFINE_SPINLOCK(list_lock); /* list_head, ch->linked = false, dev_hold */
 static struct most_component comp;
 
@@ -520,7 +520,6 @@ static int __init most_net_init(void)
 {
 	int err;
 
-	mutex_init(&probe_disc_mt);
 	err = most_register_component(&comp);
 	if (err)
 		return err;