Merge tag 'staging-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO driver updates from Greg KH:
 "Here is the big staging and IIO driver pull request for 4.20-rc1.

  There are lots of things here, we ended up adding more lines than
  removing, thanks to a large influx of Comedi National Instrument
  device support. Someday soon we need to get comedi out of staging...

  Other than the comedi drivers, the "big" things here are:

   - new iio drivers

   - delete dgnc driver (no one used it and no one had the hardware
     anymore)

   - vbox driver updates and fixes

   - erofs fixes

   - tons and tons of tiny checkpatch fixes for almost all staging
     drivers

  All of these have been in linux-next, with the last few happening a
  bit "late" due to them getting stuck on my laptop during travel to the
  Mantainers summit"

* tag 'staging-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (690 commits)
  staging: gasket: Fix sparse "incorrect type in assignment" warnings.
  staging: gasket: remove debug logs for callback invocation
  staging: gasket: remove debug logs in page table mapping calls
  staging: rtl8188eu: core: Use sizeof(*p) instead of sizeof(struct P) for memory allocation
  staging: ks7010: Remove extra blank line
  staging: gasket: Remove extra blank line
  staging: media: davinci_vpfe: Fix spelling mistake in enum
  staging: speakup: Add a pair of braces
  staging: wlan-ng: Replace long int with long
  staging: MAINTAINERS: remove obsolete IPX staging directory
  staging: MAINTAINERS: remove NCP filesystem entry
  staging: rtl8188eu: cleanup comparsions to false
  staging: gasket: Update device virtual address comment
  staging: gasket: sysfs: fix attribute release comment
  staging: gasket: apex: fix sysfs_show
  staging: gasket: page_table: simplify gasket_components_to_dev_address
  staging: gasket: page_table: fix comment in components_to_dev_address
  staging: gasket: page table: fixup error path allocating coherent mem
  staging: gasket: page_table: rearrange gasket_page_table_entry
  staging: gasket: page_table: remove unnecessary PTE status set to free
  ...

11 files changed, 227 insertions, 21 deletions

diff --git a/Documentation/devicetree/bindings/iio/accel/adxl372.txt b/Documentation/devicetree/bindings/iio/accel/adxl372.txt
new file mode 100644
index 000000000000..a289964756a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/accel/adxl372.txt
@@ -0,0 +1,33 @@
+Analog Devices ADXL372 3-Axis, +/-(200g) Digital Accelerometer
+
+http://www.analog.com/media/en/technical-documentation/data-sheets/adxl372.pdf
+
+Required properties:
+ - compatible : should be "adi,adxl372"
+ - reg: the I2C address or SPI chip select number for the device
+
+Required properties for SPI bus usage:
+ - spi-max-frequency: Max SPI frequency to use
+
+Optional properties:
+ - interrupts: interrupt mapping for IRQ as documented in
+   Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+
+Example for a I2C device node:
+
+	accelerometer@53 {
+		compatible = "adi,adxl372";
+		reg = <0x53>;
+		interrupt-parent = <&gpio>;
+		interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+	};
+
+Example for a SPI device node:
+
+	accelerometer@0 {
+		compatible = "adi,adxl372";
+		reg = <0>;
+		spi-max-frequency = <1000000>;
+		interrupt-parent = <&gpio>;
+		interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+	};
diff --git a/Documentation/devicetree/bindings/iio/adc/mcp3911.txt b/Documentation/devicetree/bindings/iio/adc/mcp3911.txt
new file mode 100644
index 000000000000..3071f48fb30b
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/mcp3911.txt
@@ -0,0 +1,30 @@
+* Microchip MCP3911 Dual channel analog front end (ADC)
+
+Required properties:
+ - compatible: Should be "microchip,mcp3911"
+ - reg: SPI chip select number for the device
+
+Recommended properties:
+ - spi-max-frequency: Definition as per
+	 Documentation/devicetree/bindings/spi/spi-bus.txt.
+	 Max frequency for this chip is 20MHz.
+
+Optional properties:
+ - clocks: Phandle and clock identifier for sampling clock
+ - interrupt-parent: Phandle to the parent interrupt controller
+ - interrupts: IRQ line for the ADC
+ - microchip,device-addr: Device address when multiple MCP3911 chips are present on the
+	same SPI bus. Valid values are 0-3. Defaults to 0.
+ - vref-supply: Phandle to the external reference voltage supply.
+
+Example:
+adc@0 {
+	compatible = "microchip,mcp3911";
+	reg = <0>;
+	interrupt-parent = <&gpio5>;
+	interrupts = <15 IRQ_TYPE_EDGE_RISING>;
+	spi-max-frequency = <20000000>;
+	microchip,device-addr = <0>;
+	vref-supply = <&vref_reg>;
+	clocks = <&xtal>;
+};
diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt
index 0fb46137f936..b3c86f4ac7cd 100644
--- a/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt
@@ -1,7 +1,9 @@
-Qualcomm's SPMI PMIC voltage ADC
+Qualcomm's SPMI PMIC ADC
 
-SPMI PMIC voltage ADC (VADC) provides interface to clients to read
-voltage. The VADC is a 15-bit sigma-delta ADC.
+- SPMI PMIC voltage ADC (VADC) provides interface to clients to read
+  voltage. The VADC is a 15-bit sigma-delta ADC.
+- SPMI PMIC5 voltage ADC (ADC) provides interface to clients to read
+  voltage. The VADC is a 16-bit sigma-delta ADC.
 
 VADC node:
 
@@ -9,11 +11,13 @@ VADC node:
     Usage: required
     Value type: <string>
     Definition: Should contain "qcom,spmi-vadc".
+                Should contain "qcom,spmi-adc5" for PMIC5 ADC driver.
+                Should contain "qcom,spmi-adc-rev2" for PMIC rev2 ADC driver.
 
 - reg:
     Usage: required
     Value type: <prop-encoded-array>
-    Definition: VADC base address and length in the SPMI PMIC register map.
+    Definition: VADC base address in the SPMI PMIC register map.
 
 - #address-cells:
     Usage: required
@@ -45,13 +49,26 @@ Channel node properties:
     Definition: ADC channel number.
             See include/dt-bindings/iio/qcom,spmi-vadc.h
 
+- label:
+    Usage: required for "qcom,spmi-adc5" and "qcom,spmi-adc-rev2"
+    Value type: <empty>
+    Definition: ADC input of the platform as seen in the schematics.
+            For thermistor inputs connected to generic AMUX or GPIO inputs
+            these can vary across platform for the same pins. Hence select
+            the platform schematics name for this channel.
+
 - qcom,decimation:
     Usage: optional
     Value type: <u32>
     Definition: This parameter is used to decrease ADC sampling rate.
             Quicker measurements can be made by reducing decimation ratio.
-            Valid values are 512, 1024, 2048, 4096.
-            If property is not found, default value of 512 will be used.
+            - For compatible property "qcom,spmi-vadc", valid values are
+              512, 1024, 2048, 4096. If property is not found, default value
+              of 512 will be used.
+            - For compatible property "qcom,spmi-adc5", valid values are 250, 420
+              and 840. If property is not found, default value of 840 is used.
+            - For compatible property "qcom,spmi-adc-rev2", valid values are 256,
+              512 and 1024. If property is not present, default value is 1024.
 
 - qcom,pre-scaling:
     Usage: optional
@@ -66,21 +83,38 @@ Channel node properties:
 - qcom,ratiometric:
     Usage: optional
     Value type: <empty>
-    Definition: Channel calibration type. If this property is specified
-            VADC will use the VDD reference (1.8V) and GND for channel
-            calibration. If property is not found, channel will be
-            calibrated with 0.625V and 1.25V reference channels, also
-            known as absolute calibration.
+    Definition: Channel calibration type.
+            - For compatible property "qcom,spmi-vadc", if this property is
+              specified VADC will use the VDD reference (1.8V) and GND for
+              channel calibration. If property is not found, channel will be
+              calibrated with 0.625V and 1.25V reference channels, also
+              known as absolute calibration.
+            - For compatible property "qcom,spmi-adc5" and "qcom,spmi-adc-rev2",
+              if this property is specified VADC will use the VDD reference
+              (1.875V) and GND for channel calibration. If property is not found,
+              channel will be calibrated with 0V and 1.25V reference channels,
+              also known as absolute calibration.
 
 - qcom,hw-settle-time:
     Usage: optional
     Value type: <u32>
     Definition: Time between AMUX getting configured and the ADC starting
-            conversion. Delay = 100us * (value) for value < 11, and
-            2ms * (value - 10) otherwise.
-            Valid values are: 0, 100, 200, 300, 400, 500, 600, 700, 800,
-            900 us and 1, 2, 4, 6, 8, 10 ms
-            If property is not found, channel will use 0us.
+            conversion. The 'hw_settle_time' is an index used from valid values
+            and programmed in hardware to achieve the hardware settling delay.
+            - For compatible property "qcom,spmi-vadc" and "qcom,spmi-adc-rev2",
+              Delay = 100us * (hw_settle_time) for hw_settle_time < 11,
+              and 2ms * (hw_settle_time - 10) otherwise.
+              Valid values are: 0, 100, 200, 300, 400, 500, 600, 700, 800,
+              900 us and 1, 2, 4, 6, 8, 10 ms.
+              If property is not found, channel will use 0us.
+            - For compatible property "qcom,spmi-adc5", delay = 15us for
+              value 0, 100us * (value) for values < 11,
+              and 2ms * (value - 10) otherwise.
+              Valid values are: 15, 100, 200, 300, 400, 500, 600, 700, 800,
+              900 us and 1, 2, 4, 6, 8, 10 ms
+              Certain controller digital versions have valid values of
+              15, 100, 200, 300, 400, 500, 600, 700, 1, 2, 4, 8, 16, 32, 64, 128 ms
+              If property is not found, channel will use 15us.
 
 - qcom,avg-samples:
     Usage: optional
@@ -89,13 +123,18 @@ Channel node properties:
             Averaging provides the option to obtain a single measurement
             from the ADC that is an average of multiple samples. The value
             selected is 2^(value).
-            Valid values are: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512
-            If property is not found, 1 sample will be used.
+            - For compatible property "qcom,spmi-vadc", valid values
+              are: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512
+              If property is not found, 1 sample will be used.
+            - For compatible property "qcom,spmi-adc5" and "qcom,spmi-adc-rev2",
+              valid values are: 1, 2, 4, 8, 16
+              If property is not found, 1 sample will be used.
 
 NOTE:
 
-Following channels, also known as reference point channels, are used for
-result calibration and their channel configuration nodes should be defined:
+For compatible property "qcom,spmi-vadc" following channels, also known as
+reference point channels, are used for result calibration and their channel
+configuration nodes should be defined:
 VADC_REF_625MV and/or VADC_SPARE1(based on PMIC version) VADC_REF_1250MV,
 VADC_GND_REF and VADC_VDD_VADC.
 
@@ -104,7 +143,7 @@ Example:
 	/* VADC node */
 	pmic_vadc: vadc@3100 {
 		compatible = "qcom,spmi-vadc";
-		reg = <0x3100 0x100>;
+		reg = <0x3100>;
 		interrupts = <0x0 0x31 0x0 IRQ_TYPE_EDGE_RISING>;
 		#address-cells = <1>;
 		#size-cells = <0>;
diff --git a/Documentation/devicetree/bindings/iio/adc/sprd,sc27xx-adc.txt b/Documentation/devicetree/bindings/iio/adc/sprd,sc27xx-adc.txt
index 8aad960de50b..b4daa15dcf15 100644
--- a/Documentation/devicetree/bindings/iio/adc/sprd,sc27xx-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/sprd,sc27xx-adc.txt
@@ -12,6 +12,8 @@ Required properties:
 - interrupts: The interrupt number for the ADC device.
 - #io-channel-cells: Number of cells in an IIO specifier.
 - hwlocks: Reference to a phandle of a hwlock provider node.
+- nvmem-cells: A phandle to the calibration cells provided by eFuse device.
+- nvmem-cell-names: Should be "big_scale_calib", "small_scale_calib".
 
 Example:
 
@@ -32,5 +34,7 @@ Example:
 			interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
 			#io-channel-cells = <1>;
 			hwlocks = <&hwlock 4>;
+			nvmem-cells = <&adc_big_scale>, <&adc_small_scale>;
+			nvmem-cell-names = "big_scale_calib", "small_scale_calib";
 		};
 	};
diff --git a/Documentation/devicetree/bindings/iio/dac/ad5758.txt b/Documentation/devicetree/bindings/iio/dac/ad5758.txt
index bba01a5cab1b..2f607f41f9d3 100644
--- a/Documentation/devicetree/bindings/iio/dac/ad5758.txt
+++ b/Documentation/devicetree/bindings/iio/dac/ad5758.txt
@@ -50,6 +50,9 @@ Required properties:
 
 Optional properties:
 
+ - reset-gpios : GPIO spec for the RESET pin. If specified, it will be
+		 asserted during driver probe.
+
  - adi,dc-dc-ilim-microamp: The dc-to-dc converter current limit
 		   The following values are currently supported [uA]:
 			* 150000
@@ -71,6 +74,8 @@ AD5758 Example:
 		spi-max-frequency = <1000000>;
 		spi-cpha;
 
+		reset-gpios = <&gpio 22 0>;
+
 		adi,dc-dc-mode = <2>;
 		adi,range-microvolt = <0 10000000>;
 		adi,dc-dc-ilim-microamp = <200000>;
diff --git a/Documentation/devicetree/bindings/iio/dac/ltc1660.txt b/Documentation/devicetree/bindings/iio/dac/ltc1660.txt
new file mode 100644
index 000000000000..c5b5f22d6c64
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/ltc1660.txt
@@ -0,0 +1,21 @@
+* Linear Technology Micropower octal 8-Bit and 10-Bit DACs
+
+Required properties:
+ - compatible: Must be one of the following:
+		"lltc,ltc1660"
+		"lltc,ltc1665"
+ - reg: SPI chip select number for the device
+ - vref-supply: Phandle to the voltage reference supply
+
+Recommended properties:
+ - spi-max-frequency: Definition as per
+	 Documentation/devicetree/bindings/spi/spi-bus.txt.
+	 Max frequency for this chip is 5 MHz.
+
+Example:
+dac@0 {
+	compatible = "lltc,ltc1660";
+	reg = <0>;
+	spi-max-frequency = <5000000>;
+	vref-supply = <&vref_reg>;
+};
diff --git a/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt b/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
index b2f27da847b8..6ab9a9d196b0 100644
--- a/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
+++ b/Documentation/devicetree/bindings/iio/imu/inv_mpu6050.txt
@@ -20,6 +20,7 @@ Required properties:
   bindings.
 
 Optional properties:
+ - 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
diff --git a/Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt b/Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt
index ea2d6e0ae4c5..879322ad50fd 100644
--- a/Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt
+++ b/Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt
@@ -7,6 +7,7 @@ Required properties:
   "st,lsm6dsl"
   "st,lsm6dsm"
   "st,ism330dlc"
+  "st,lsm6dso"
 - reg: i2c address of the sensor / spi cs line
 
 Optional properties:
diff --git a/Documentation/devicetree/bindings/iio/light/bh1750.txt b/Documentation/devicetree/bindings/iio/light/bh1750.txt
new file mode 100644
index 000000000000..1e7685797d7a
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/light/bh1750.txt
@@ -0,0 +1,18 @@
+ROHM BH1750 - ALS, Ambient light sensor
+
+Required properties:
+
+- compatible: Must be one of:
+    "rohm,bh1710"
+    "rohm,bh1715"
+    "rohm,bh1721"
+    "rohm,bh1750"
+    "rohm,bh1751"
+- reg: the I2C address of the sensor
+
+Example:
+
+light-sensor@23 {
+	compatible = "rohm,bh1750";
+	reg = <0x23>;
+};
diff --git a/Documentation/devicetree/bindings/iio/light/tsl2772.txt b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
new file mode 100644
index 000000000000..1c5e6f17a1df
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
@@ -0,0 +1,42 @@
+* AMS/TAOS ALS and proximity sensor
+
+Required properties:
+
+  - compatible: Should be one of
+		"amstaos,tsl2571"
+		"amstaos,tsl2671"
+		"amstaos,tmd2671"
+		"amstaos,tsl2771"
+		"amstaos,tmd2771"
+		"amstaos,tsl2572"
+		"amstaos,tsl2672"
+		"amstaos,tmd2672"
+		"amstaos,tsl2772"
+		"amstaos,tmd2772"
+		"avago,apds9930"
+  - reg: the I2C address of the device
+
+Optional properties:
+
+  - amstaos,proximity-diodes - proximity diodes to enable. <0>, <1>, or <0 1>
+                               are the only valid values.
+  - led-max-microamp - current for the proximity LED. Must be 100000, 50000,
+                       25000, or 13000.
+  - vdd-supply: phandle to the regulator that provides power to the sensor.
+  - vddio-supply: phandle to the regulator that provides power to the bus.
+  - interrupts: the sole interrupt generated by the device
+
+  Refer to interrupt-controller/interrupts.txt for generic interrupt client
+  node bindings.
+
+Example:
+
+tsl2772@39 {
+	compatible = "amstaos,tsl2772";
+	reg = <0x39>;
+	interrupts-extended = <&msmgpio 61 IRQ_TYPE_EDGE_FALLING>;
+	vdd-supply = <&pm8941_l17>;
+	vddio-supply = <&pm8941_lvs1>;
+	amstaos,proximity-diodes = <0>;
+	led-max-microamp = <100000>;
+};
diff --git a/Documentation/devicetree/bindings/iio/proximity/vl53l0x.txt b/Documentation/devicetree/bindings/iio/proximity/vl53l0x.txt
new file mode 100644
index 000000000000..aac5f621f8dc
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/vl53l0x.txt
@@ -0,0 +1,12 @@
+ST VL53L0X ToF ranging sensor
+
+Required properties:
+	- compatible: must be "st,vl53l0x"
+	- reg: i2c address where to find the device
+
+Example:
+
+vl53l0x@29 {
+	compatible = "st,vl53l0x";
+	reg = <0x29>;
+};