Merge tag 'staging-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging drivers patches from Greg KH:
 "Here's the big staging driver tree update for 3.20-rc1.

  Lots of little things in here, adding up to lots of overall cleanups.
  The IIO driver updates are also in here as they cross the staging tree
  boundry a lot.  I2O has moved into staging as well, as a plan to drop
  it from the tree eventually as that's a dead subsystem.

  All of this has been in linux-next with no reported issues for a
  while"

* tag 'staging-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (740 commits)
  staging: lustre: lustre: libcfs: define symbols as static
  staging: rtl8712: Do coding style cleanup
  staging: lustre: make obd_updatemax_lock static
  staging: rtl8188eu: core: switch with redundant cases
  staging: rtl8188eu: odm: conditional setting with no effect
  staging: rtl8188eu: odm: condition with no effect
  staging: ft1000: fix braces warning
  staging: sm7xxfb: fix remaining CamelCase
  staging: sm7xxfb: fix CamelCase
  staging: rtl8723au: multiple condition with no effect - if identical to else
  staging: sm7xxfb: make smtc_scr_info static
  staging/lustre/mdc: Initialize req in mdc_enqueue for !it case
  staging/lustre/clio: Do not allow group locks with gid 0
  staging/lustre/llite: don't add to page cache upon failure
  staging/lustre/llite: Add exception entry check after radix_tree
  staging/lustre/libcfs: protect kkuc_groups from write access
  staging/lustre/fld: refer to MDT0 for fld lookup in some cases
  staging/lustre/llite: Solve a race to access lli_has_smd in read case
  staging/lustre/ptlrpc: hold rq_lock when modify rq_flags
  staging/lustre/lnet: portal spreading rotor should be unsigned
  ...

3 files changed, 176 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/iio/adc/cc10001_adc.txt b/Documentation/devicetree/bindings/iio/adc/cc10001_adc.txt
new file mode 100644
index 000000000000..904f76de9055
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/cc10001_adc.txt
@@ -0,0 +1,22 @@
+* Cosmic Circuits - Analog to Digital Converter (CC-10001-ADC)
+
+Required properties:
+  - compatible: Should be "cosmic,10001-adc"
+  - reg: Should contain adc registers location and length.
+  - clock-names: Should contain "adc".
+  - clocks: Should contain a clock specifier for each entry in clock-names
+  - vref-supply: The regulator supply ADC reference voltage.
+
+Optional properties:
+  - adc-reserved-channels: Bitmask of reserved channels,
+    i.e. channels that cannot be used by the OS.
+
+Example:
+adc: adc@18101600 {
+	compatible = "cosmic,10001-adc";
+	reg = <0x18101600 0x24>;
+	adc-reserved-channels = <0x2>;
+	clocks = <&adc_clk>;
+	clock-names = "adc";
+	vref-supply = <&reg_1v8>;
+};
diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt
new file mode 100644
index 000000000000..0fb46137f936
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt
@@ -0,0 +1,129 @@
+Qualcomm's SPMI PMIC voltage ADC
+
+SPMI PMIC voltage ADC (VADC) provides interface to clients to read
+voltage. The VADC is a 15-bit sigma-delta ADC.
+
+VADC node:
+
+- compatible:
+    Usage: required
+    Value type: <string>
+    Definition: Should contain "qcom,spmi-vadc".
+
+- reg:
+    Usage: required
+    Value type: <prop-encoded-array>
+    Definition: VADC base address and length in the SPMI PMIC register map.
+
+- #address-cells:
+    Usage: required
+    Value type: <u32>
+    Definition: Must be one. Child node 'reg' property should define ADC
+            channel number.
+
+- #size-cells:
+    Usage: required
+    Value type: <u32>
+    Definition: Must be zero.
+
+- #io-channel-cells:
+    Usage: required
+    Value type: <u32>
+    Definition: Must be one. For details about IIO bindings see:
+            Documentation/devicetree/bindings/iio/iio-bindings.txt
+
+- interrupts:
+    Usage: optional
+    Value type: <prop-encoded-array>
+    Definition: End of conversion interrupt.
+
+Channel node properties:
+
+- reg:
+    Usage: required
+    Value type: <u32>
+    Definition: ADC channel number.
+            See include/dt-bindings/iio/qcom,spmi-vadc.h
+
+- 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.
+
+- qcom,pre-scaling:
+    Usage: optional
+    Value type: <u32 array>
+    Definition: Used for scaling the channel input signal before the signal is
+            fed to VADC. The configuration for this node is to know the
+            pre-determined ratio and use it for post scaling. Select one from
+            the following options.
+            <1 1>, <1 3>, <1 4>, <1 6>, <1 20>, <1 8>, <10 81>, <1 10>
+            If property is not found default value depending on chip will be used.
+
+- qcom,ratiometric:
+    Usage: optional
+    Value type: <empty>
+    Definition: Channel calibration type. 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.
+
+- 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.
+
+- qcom,avg-samples:
+    Usage: optional
+    Value type: <u32>
+    Definition: Number of samples to be used for measurement.
+            Averaging provides the option to obtain a single measurement
+            from the ADC that is an average of multiple samples. The value
+            selected is 2^(value).
+            Valid values are: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512
+            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:
+VADC_REF_625MV and/or VADC_SPARE1(based on PMIC version) VADC_REF_1250MV,
+VADC_GND_REF and VADC_VDD_VADC.
+
+Example:
+
+	/* VADC node */
+	pmic_vadc: vadc@3100 {
+		compatible = "qcom,spmi-vadc";
+		reg = <0x3100 0x100>;
+		interrupts = <0x0 0x31 0x0 IRQ_TYPE_EDGE_RISING>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		#io-channel-cells = <1>;
+		io-channel-ranges;
+
+		/* Channel node */
+		usb_id_nopull {
+			reg = <VADC_LR_MUX10_USB_ID>;
+			qcom,decimation = <512>;
+			qcom,ratiometric;
+			qcom,hw-settle-time = <200>;
+			qcom,avg-samples = <1>;
+			qcom,pre-scaling = <1 3>;
+		};
+	};
+
+	/* IIO client node */
+	usb {
+		io-channels = <&pmic_vadc VADC_LR_MUX10_USB_ID>;
+		io-channel-names = "vadc";
+	};
diff --git a/Documentation/devicetree/bindings/iio/sensorhub.txt b/Documentation/devicetree/bindings/iio/sensorhub.txt
new file mode 100644
index 000000000000..8d57571d5c0b
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/sensorhub.txt
@@ -0,0 +1,25 @@
+Samsung Sensorhub driver
+
+Sensorhub is a MCU which manages several sensors and also plays the role
+of a virtual sensor device.
+
+Required properties:
+- compatible: "samsung,sensorhub-rinato" or "samsung,sensorhub-thermostat"
+- spi-max-frequency: max SPI clock frequency
+- interrupt-parent: interrupt parent
+- interrupts: communication interrupt
+- ap-mcu-gpios: [out] ap to sensorhub line - used during communication
+- mcu-ap-gpios: [in] sensorhub to ap - used during communication
+- mcu-reset-gpios: [out] sensorhub reset
+
+Example:
+
+	shub_spi: shub {
+		compatible = "samsung,sensorhub-rinato";
+		spi-max-frequency = <5000000>;
+		interrupt-parent = <&gpx0>;
+		interrupts = <2 0>;
+		ap-mcu-gpios = <&gpx0 0 0>;
+		mcu-ap-gpios = <&gpx0 4 0>;
+		mcu-reset-gpios = <&gpx0 5 0>;
+	};