Merge tag 'iio-for-3.20b' of...

Merge tag 'iio-for-3.20b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing

Jonathan writes:

Second round of IIO new drivers, functionality and cleanups for the 3.20 cycle.

New drivers and device support:
* Capella cm3232 ambient light sensor driver.
* Freescale MMA9553 pedometer and activity monitor. Note this involved a
  refactor of the mma9551 driver to pull out shared elements.
* Samsung sensor hub (as used in the galaxy gear 2 watch) Core support
  and initial drivers (gyro and accelerometer) more to follow.
  An additional fix was applied on top of this for a build issue
  thrown up by the autobuilders on some platforms.
* Cosmic Circuits 10001 ADC driver
* Qualcomm SPMI PMIC voltage ADC driver (current adc merged a while back).
* Add binding for AK8963 (in capitals) as unfortunately there are bios'
  out there not using lower case.

New functionality
* Add newe operating mode to the core to allow for non triggered software
  buffers.  This is mostly semantics as previously drivers just claimed they
  had a hardware buffer (when they didn't).
* Add distance channel type.
* Add energy channel type.
* Add velocity channel type and IIO_MOD_ROOT_SUM_SQUARED (i.e. speed when
  our channel type is velocity).
* Add _debounce_count and _debounce_time filter attributes.  Only really
  make sense for counting types of measurements.  First use is for avoiding
  miss detection of steps prior to walking.
* Add change event type.   This replaces the briefly present INSTANCE type
  (which hadn't gained any users).  It is more generic as it allows for
  events say every 10 steps rather than every step.
* Add _calibweight attributes to the ABI (and core support).  Used by
  activity monitors to estimate energy use.  Can imagine there will be
  other uses for this one.

Driver new functionality
* mma9551 gains runtime pm support.
* hid-sensors gain PM support.

Cleanup
* Change calibheight unit to m from cm.  As there are no prior users
  and this was inconsistent with other distance units, it makes sense
  to fix it before hte mma9553 driver which uses it.
* mpu6050 cleanups and devm_ use.
* as3935 switch over to PM ops.
* Fix a few format strings for signed vs unsigned.
* Fix tcs3414 missindentation
* Typo in industrialio-event
* Stop requiring IIO_TRIGGER for IIO_KFIFO_BUF as we have drivers that don't
  need it. No one is quite sure why that dependency was there and it
  seems to not matter.

Documentation/ABI/testing/sysfs-bus-iio

@@ -282,6 +282,8 @@ What:		/sys/bus/iio/devices/iio:deviceX/in_current_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_accel_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
+What:		/sys/bus/iio/devices/iio:deviceX/in_energy_scale
+What:		/sys/bus/iio/devices/iio:deviceX/in_distance_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_magn_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
@@ -293,6 +295,7 @@ What:		/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_pressure_scale
 What:		/sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
+What:		/sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
 KernelVersion:	2.6.35
 Contact:	linux-iio@vger.kernel.org
 Description:
@@ -340,14 +343,44 @@ Description:
 		production inaccuracies).  If shared across all channels,
 		<type>_calibscale is used.
 
-What:		/sys/bus/iio/devices/iio:deviceX/in_steps_calibheight
+What:		/sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
+What:		/sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
+What:		/sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
+What:		/sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Gender of the user (e.g.: male, female) used by some pedometers
+		to compute the stride length, distance, speed and activity
+		type.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
+What:		/sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
+What:		/sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
+What:		/sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Lists all available gender values (e.g.: male, female).
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
+What:		/sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
+What:		/sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
+What:		/sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
 KernelVersion:	3.19
 Contact:	linux-iio@vger.kernel.org
 Description:
-		Height of the user (in centimeters) used by some pedometers
+		Height of the user (in meters) used by some pedometers
 		to compute the stride length, distance, speed and activity
 		type.
 
+What:		/sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Weight of the user (in kg). It is needed by some pedometers
+		to compute the calories burnt by the user.
+
 What:		/sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
 What:		/sys/.../iio:deviceX/in_voltageX_scale_available
 What:		/sys/.../iio:deviceX/in_voltage-voltage_scale_available
@@ -808,6 +841,14 @@ What:		/sys/.../events/in_tempY_roc_falling_period
 What:		/sys/.../events/in_accel_x&y&z_mag_falling_period
 What:		/sys/.../events/in_intensity0_thresh_period
 What:		/sys/.../events/in_proximity0_thresh_period
+What:		/sys/.../events/in_activity_still_thresh_rising_period
+What:		/sys/.../events/in_activity_still_thresh_falling_period
+What:		/sys/.../events/in_activity_walking_thresh_rising_period
+What:		/sys/.../events/in_activity_walking_thresh_falling_period
+What:		/sys/.../events/in_activity_jogging_thresh_rising_period
+What:		/sys/.../events/in_activity_jogging_thresh_falling_period
+What:		/sys/.../events/in_activity_running_thresh_rising_period
+What:		/sys/.../events/in_activity_running_thresh_falling_period
 KernelVersion:	2.6.37
 Contact:	linux-iio@vger.kernel.org
 Description:
@@ -881,12 +922,24 @@ Description:
 		number or direction is not specified, applies to all channels of
 		this type.
 
-What:		/sys/.../events/in_steps_instance_en
-KernelVersion:	3.19
+What:		/sys/.../events/in_steps_change_en
+KernelVersion:	3.20
 Contact:	linux-iio@vger.kernel.org
 Description:
-		Enables or disables step detection. Each time the user takes a step an
-		event of this type will be generated.
+		Event generated when channel passes a threshold on the absolute
+		change in value. E.g. for steps: a step change event is
+		generated each time the user takes N steps, where N is set using
+		in_steps_change_value.
+
+What:		/sys/.../events/in_steps_change_value
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Specifies the value of change threshold that the
+		device is comparing against for the events enabled by
+		<type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
+		if set to 3, a step change event will be generated every 3
+		steps.
 
 What:		/sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
 KernelVersion:	2.6.35
@@ -1049,6 +1102,24 @@ Description:
 		For a list of available output power modes read
 		in_accel_power_mode_available.
 
+What:		/sys/.../iio:deviceX/in_energy_input
+What:		/sys/.../iio:deviceX/in_energy_raw
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		This attribute is used to read the energy value reported by the
+		device (e.g.: human activity sensors report energy burnt by the
+		user). Units after application of scale are Joules.
+
+What:		/sys/.../iio:deviceX/in_distance_input
+What:		/sys/.../iio:deviceX/in_distance_raw
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		This attribute is used to read the distance covered by the user
+		since the last reboot while activated. Units after application
+		of scale are meters.
+
 What:		/sys/bus/iio/devices/iio:deviceX/store_eeprom
 KernelVersion:	3.4.0
 Contact:	linux-iio@vger.kernel.org
@@ -1102,6 +1173,12 @@ Description:
 		This attribute is used to get/set the integration time in
 		seconds.
 
+What:		/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Number of seconds in which to compute speed.
+
 What:		/sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
 KernelVersion:	3.15
 Contact:	linux-iio@vger.kernel.org
@@ -1130,13 +1207,17 @@ Description:
 		present, output should be considered as processed with the
 		unit in milliamps.
 
+What:		/sys/.../iio:deviceX/in_energy_en
+What:		/sys/.../iio:deviceX/in_distance_en
+What:		/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
 What:		/sys/.../iio:deviceX/in_steps_en
 KernelVersion:	3.19
 Contact:	linux-iio@vger.kernel.org
 Description:
-		Activates the step counter. After activation, the number of steps
-		taken by the user will be counted in hardware and exported through
-		in_steps_input.
+		Activates a device feature that runs in firmware/hardware.
+		E.g. for steps: the pedometer saves power while not used;
+		when activated, it will count the steps taken by the user in
+		firmware and export them through in_steps_input.
 
 What:		/sys/.../iio:deviceX/in_steps_input
 KernelVersion:	3.19
@@ -1144,3 +1225,27 @@ Contact:	linux-iio@vger.kernel.org
 Description:
 		This attribute is used to read the number of steps taken by the user
 		since the last reboot while activated.
+
+What:		/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
+What:		/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
+KernelVersion:	3.19
+Contact:	linux-iio@vger.kernel.org
+Description:
+		This attribute is used to read the current speed value of the
+		user (which is the norm or magnitude of the velocity vector).
+		Units after application of scale are m/s.
+
+What:		/sys/.../iio:deviceX/in_steps_debounce_count
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Specifies the number of steps that must occur within
+		in_steps_filter_debounce_time for the pedometer to decide the
+		consumer is making steps.
+
+What:		/sys/.../iio:deviceX/in_steps_debounce_time
+KernelVersion:	3.20
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Specifies number of seconds in which we compute the steps
+		that occur in order to decide if the consumer is making steps.

Documentation/devicetree/bindings/i2c/trivial-devices.txt

@@ -34,6 +34,7 @@ atmel,24c512		i2c serial eeprom  (24cxx)
 atmel,24c1024		i2c serial eeprom  (24cxx)
 atmel,at97sc3204t	i2c trusted platform module (TPM)
 capella,cm32181		CM32181: Ambient Light Sensor
+capella,cm3232		CM3232: Ambient Light Sensor
 catalyst,24c32		i2c serial eeprom
 cirrus,cs42l51		Cirrus Logic CS42L51 audio codec
 dallas,ds1307		64 x 8, Serial, I2C Real-Time Clock

Documentation/devicetree/bindings/iio/adc/cc10001_adc.txt

+* 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>;
+};

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

+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";
+	};

Documentation/devicetree/bindings/iio/sensorhub.txt

+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>;
+	};

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -36,6 +36,7 @@ chunghwa	Chunghwa Picture Tubes Ltd.
 cirrus	Cirrus Logic, Inc.
 cnm	Chips&Media, Inc.
 cortina	Cortina Systems, Inc.
+cosmic	Cosmic Circuits
 crystalfontz	Crystalfontz America, Inc.
 dallas	Maxim Integrated Products (formerly Dallas Semiconductor)
 davicom	DAVICOM Semiconductor, Inc.

MAINTAINERS

@@ -2379,6 +2379,12 @@ F:	security/capability.c
 F:	security/commoncap.c
 F:	kernel/capability.c
 
+CAPELLA MICROSYSTEMS LIGHT SENSOR DRIVER
+M:	Kevin Tsai <ktsai@capellamicro.com>
+S:	Maintained
+F:	drivers/iio/light/cm*
+F:	Documentation/devicetree/bindings/i2c/trivial-devices.txt
+
 CC2520 IEEE-802.15.4 RADIO DRIVER
 M:	Varka Bhadram <varkabhadram@gmail.com>
 L:	linux-wpan@vger.kernel.org

drivers/iio/Kconfig

@@ -27,7 +27,6 @@ boolean "IIO callback buffer used for push in-kernel interfaces"
 	  usage.  That is, those where the data is pushed to the consumer.
 
 config IIO_KFIFO_BUF
-	select IIO_TRIGGER
 	tristate "Industrial I/O buffering based on kfifo"
 	help
 	  A simple fifo based on kfifo.  Note that this currently provides

drivers/iio/accel/Kconfig

@@ -111,9 +111,14 @@ config KXCJK1013
 	  To compile this driver as a module, choose M here: the module will
 	  be called kxcjk-1013.
 
+config MMA9551_CORE
+	tristate
+
 config MMA9551
 	tristate "Freescale MMA9551L Intelligent Motion-Sensing Platform Driver"
 	depends on I2C
+	select MMA9551_CORE
+
 	help
 	  Say yes here to build support for the Freescale MMA9551L
 	  Intelligent Motion-Sensing Platform Driver.
@@ -121,4 +126,14 @@ config MMA9551
 	  To compile this driver as a module, choose M here: the module
 	  will be called mma9551.
 
+config MMA9553
+	tristate "Freescale MMA9553L Intelligent Pedometer Platform Driver"
+	depends on I2C
+	select MMA9551_CORE
+	help
+	  Say yes here to build support for the Freescale MMA9553L
+	  Intelligent Pedometer Platform Driver.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called mma9553.
 endmenu

drivers/iio/accel/Makefile

@@ -9,7 +9,12 @@ obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
 obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o
 obj-$(CONFIG_KXSD9)	+= kxsd9.o
 obj-$(CONFIG_MMA8452)	+= mma8452.o
+
+obj-$(CONFIG_MMA9551_CORE)	+= mma9551_core.o
 obj-$(CONFIG_MMA9551)		+= mma9551.o
+obj-$(CONFIG_MMA9553)		+= mma9553.o
+
+obj-$(CONFIG_IIO_SSP_SENSORS_COMMONS) += ssp_accel_sensor.o
 
 obj-$(CONFIG_IIO_ST_ACCEL_3AXIS) += st_accel.o
 st_accel-y := st_accel_core.o

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

@@ -111,19 +111,12 @@ static int accel_3d_read_raw(struct iio_dev *indio_dev,
 	int report_id = -1;
 	u32 address;
 	int ret_type;
-	s32 poll_value;
 
 	*val = 0;
 	*val2 = 0;
 	switch (mask) {
 	case 0:
-		poll_value = hid_sensor_read_poll_value(
-					&accel_state->common_attributes);
-		if (poll_value < 0)
-			return -EINVAL;
-
 		hid_sensor_power_state(&accel_state->common_attributes, true);
-		msleep_interruptible(poll_value * 2);
 		report_id = accel_state->accel[chan->scan_index].report_id;
 		address = accel_3d_addresses[chan->scan_index];
 		if (report_id >= 0)
@@ -419,6 +412,7 @@ static struct platform_driver hid_accel_3d_platform_driver = {
 	.id_table = hid_accel_3d_ids,
 	.driver = {
 		.name	= KBUILD_MODNAME,
+		.pm	= &hid_sensor_pm_ops,
 	},
 	.probe		= hid_accel_3d_probe,
 	.remove		= hid_accel_3d_remove,

drivers/iio/accel/mma9551_core.h

+/*
+ * Common code for Freescale MMA955x Intelligent Sensor Platform drivers
+ * Copyright (c) 2014, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#ifndef _MMA9551_CORE_H_
+#define _MMA9551_CORE_H_
+
+/* Applications IDs */
+#define MMA9551_APPID_VERSION		0x00
+#define MMA9551_APPID_GPIO		0x03
+#define MMA9551_APPID_AFE		0x06
+#define MMA9551_APPID_TILT		0x0B
+#define MMA9551_APPID_SLEEP_WAKE	0x12
+#define MMA9551_APPID_PEDOMETER	        0x15
+#define MMA9551_APPID_RCS		0x17
+#define MMA9551_APPID_NONE		0xff
+
+/* Reset/Suspend/Clear application app masks */
+#define MMA9551_RSC_PED			BIT(21)
+
+#define MMA9551_AUTO_SUSPEND_DELAY_MS	2000
+
+enum mma9551_gpio_pin {
+	mma9551_gpio6 = 0,
+	mma9551_gpio7,
+	mma9551_gpio8,
+	mma9551_gpio9,
+	mma9551_gpio_max = mma9551_gpio9,
+};
+
+#define MMA9551_ACCEL_CHANNEL(axis) {				\
+	.type = IIO_ACCEL,					\
+	.modified = 1,						\
+	.channel2 = axis,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+}
+
+int mma9551_read_config_byte(struct i2c_client *client, u8 app_id,
+			     u16 reg, u8 *val);
+int mma9551_write_config_byte(struct i2c_client *client, u8 app_id,
+			      u16 reg, u8 val);
+int mma9551_read_status_byte(struct i2c_client *client, u8 app_id,
+			     u16 reg, u8 *val);
+int mma9551_read_config_word(struct i2c_client *client, u8 app_id,
+			    u16 reg, u16 *val);
+int mma9551_write_config_word(struct i2c_client *client, u8 app_id,
+			     u16 reg, u16 val);
+int mma9551_read_status_word(struct i2c_client *client, u8 app_id,
+			     u16 reg, u16 *val);
+int mma9551_read_config_words(struct i2c_client *client, u8 app_id,
+			     u16 reg, u8 len, u16 *buf);
+int mma9551_read_status_words(struct i2c_client *client, u8 app_id,
+			      u16 reg, u8 len, u16 *buf);
+int mma9551_write_config_words(struct i2c_client *client, u8 app_id,
+			       u16 reg, u8 len, u16 *buf);
+int mma9551_update_config_bits(struct i2c_client *client, u8 app_id,
+			       u16 reg, u8 mask, u8 val);
+int mma9551_gpio_config(struct i2c_client *client, enum mma9551_gpio_pin pin,
+			u8 app_id, u8 bitnum, int polarity);
+int mma9551_read_version(struct i2c_client *client);
+int mma9551_set_device_state(struct i2c_client *client, bool enable);
+int mma9551_set_power_state(struct i2c_client *client, bool on);
+void mma9551_sleep(int freq);
+int mma9551_read_accel_chan(struct i2c_client *client,
+			    const struct iio_chan_spec *chan,
+			    int *val, int *val2);
+int mma9551_read_accel_scale(int *val, int *val2);
+int mma9551_app_reset(struct i2c_client *client, u32 app_mask);
+
+#endif /* _MMA9551_CORE_H_ */

drivers/iio/accel/ssp_accel_sensor.c

+/*
+ *  Copyright (C) 2014, Samsung Electronics Co. Ltd. All Rights Reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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/iio/common/ssp_sensors.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/kfifo_buf.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include "../common/ssp_sensors/ssp_iio_sensor.h"
+
+#define SSP_CHANNEL_COUNT 3
+
+#define SSP_ACCEL_NAME "ssp-accelerometer"
+static const char ssp_accel_device_name[] = SSP_ACCEL_NAME;
+
+enum ssp_accel_3d_channel {
+	SSP_CHANNEL_SCAN_INDEX_X,
+	SSP_CHANNEL_SCAN_INDEX_Y,
+	SSP_CHANNEL_SCAN_INDEX_Z,
+	SSP_CHANNEL_SCAN_INDEX_TIME,
+};
+
+static int ssp_accel_read_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,  int *val,
+			      int *val2, long mask)
+{
+	u32 t;
+	struct ssp_data *data = dev_get_drvdata(indio_dev->dev.parent->parent);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		t = ssp_get_sensor_delay(data, SSP_ACCELEROMETER_SENSOR);
+		ssp_convert_to_freq(t, val, val2);
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static int ssp_accel_write_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan, int val,
+			       int val2, long mask)
+{
+	int ret;
+	struct ssp_data *data = dev_get_drvdata(indio_dev->dev.parent->parent);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = ssp_convert_to_time(val, val2);
+		ret = ssp_change_delay(data, SSP_ACCELEROMETER_SENSOR, ret);
+		if (ret < 0)
+			dev_err(&indio_dev->dev, "accel sensor enable fail\n");
+
+		return ret;
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static struct iio_info ssp_accel_iio_info = {
+	.read_raw = &ssp_accel_read_raw,
+	.write_raw = &ssp_accel_write_raw,
+};
+
+static const unsigned long ssp_accel_scan_mask[] = { 0x7, 0, };
+
+static const struct iio_chan_spec ssp_acc_channels[] = {
+	SSP_CHANNEL_AG(IIO_ACCEL, IIO_MOD_X, SSP_CHANNEL_SCAN_INDEX_X),
+	SSP_CHANNEL_AG(IIO_ACCEL, IIO_MOD_Y, SSP_CHANNEL_SCAN_INDEX_Y),
+	SSP_CHANNEL_AG(IIO_ACCEL, IIO_MOD_Z, SSP_CHANNEL_SCAN_INDEX_Z),
+	SSP_CHAN_TIMESTAMP(SSP_CHANNEL_SCAN_INDEX_TIME),
+};
+
+static int ssp_process_accel_data(struct iio_dev *indio_dev, void *buf,
+				  int64_t timestamp)
+{
+	return ssp_common_process_data(indio_dev, buf, SSP_ACCELEROMETER_SIZE,
+				       timestamp);
+}
+
+static const struct iio_buffer_setup_ops ssp_accel_buffer_ops = {
+	.postenable = &ssp_common_buffer_postenable,
+	.postdisable = &ssp_common_buffer_postdisable,
+};
+
+static int ssp_accel_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct iio_dev *indio_dev;
+	struct ssp_sensor_data *spd;
+	struct iio_buffer *buffer;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*spd));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	spd = iio_priv(indio_dev);
+
+	spd->process_data = ssp_process_accel_data;
+	spd->type = SSP_ACCELEROMETER_SENSOR;
+
+	indio_dev->name = ssp_accel_device_name;
+	indio_dev->dev.parent = &pdev->dev;
+	indio_dev->dev.of_node = pdev->dev.of_node;
+	indio_dev->info = &ssp_accel_iio_info;
+	indio_dev->modes = INDIO_BUFFER_SOFTWARE;
+	indio_dev->channels = ssp_acc_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ssp_acc_channels);
+	indio_dev->available_scan_masks = ssp_accel_scan_mask;
+
+	buffer = devm_iio_kfifo_allocate(&pdev->dev);
+	if (!buffer)
+		return -ENOMEM;
+
+	iio_device_attach_buffer(indio_dev, buffer);
+
+	indio_dev->setup_ops = &ssp_accel_buffer_ops;
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	ret = iio_device_register(indio_dev);
+	if (ret < 0)
+		return ret;
+
+	/* ssp registering should be done after all iio setup */
+	ssp_register_consumer(indio_dev, SSP_ACCELEROMETER_SENSOR);
+
+	return 0;
+}
+
+static int ssp_accel_remove(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+
+	iio_device_unregister(indio_dev);
+
+	return 0;
+}
+
+static struct platform_driver ssp_accel_driver = {
+	.driver = {
+		.name = SSP_ACCEL_NAME,
+	},
+	.probe = ssp_accel_probe,
+	.remove =  ssp_accel_remove,
+};
+
+module_platform_driver(ssp_accel_driver);
+
+MODULE_AUTHOR("Karol Wrona <k.wrona@samsung.com>");
+MODULE_DESCRIPTION("Samsung sensorhub accelerometers driver");
+MODULE_LICENSE("GPL");

drivers/iio/adc/Kconfig

@@ -135,6 +135,17 @@ config AXP288_ADC
 	  device. Depending on platform configuration, this general purpose ADC can
 	  be used for sampling sensors such as thermal resistors.
 
+config CC10001_ADC
+	tristate "Cosmic Circuits 10001 ADC driver"
+	depends on HAS_IOMEM || HAVE_CLK || REGULATOR
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to build support for Cosmic Circuits 10001 ADC.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called cc10001_adc.
+
 config EXYNOS_ADC
 	tristate "Exynos ADC driver support"
 	depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || (OF && COMPILE_TEST)
@@ -228,6 +239,20 @@ config QCOM_SPMI_IADC
 	  To compile this driver as a module, choose M here: the module will
 	  be called qcom-spmi-iadc.
 
+config QCOM_SPMI_VADC
+	tristate "Qualcomm SPMI PMIC voltage ADC"
+	depends on SPMI
+	select REGMAP_SPMI
+	help
+	  This is the IIO Voltage ADC driver for Qualcomm QPNP VADC Chip.
+
+	  The driver supports multiple channels read. The VADC is a 15-bit
+	  sigma-delta ADC. Some of the channels are internally used for
+	  calibration.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called qcom-spmi-vadc.
+
 config ROCKCHIP_SARADC
 	tristate "Rockchip SARADC driver"
 	depends on ARCH_ROCKCHIP || (ARM && COMPILE_TEST)

drivers/iio/adc/Makefile

@@ -15,6 +15,7 @@ obj-$(CONFIG_AD7887) += ad7887.o
 obj-$(CONFIG_AD799X) += ad799x.o
 obj-$(CONFIG_AT91_ADC) += at91_adc.o
 obj-$(CONFIG_AXP288_ADC) += axp288_adc.o
+obj-$(CONFIG_CC10001_ADC) += cc10001_adc.o
 obj-$(CONFIG_EXYNOS_ADC) += exynos_adc.o
 obj-$(CONFIG_LP8788_ADC) += lp8788_adc.o
 obj-$(CONFIG_MAX1027) += max1027.o
@@ -24,6 +25,7 @@ obj-$(CONFIG_MCP3422) += mcp3422.o
 obj-$(CONFIG_MEN_Z188_ADC) += men_z188_adc.o
 obj-$(CONFIG_NAU7802) += nau7802.o
 obj-$(CONFIG_QCOM_SPMI_IADC) += qcom-spmi-iadc.o
+obj-$(CONFIG_QCOM_SPMI_VADC) += qcom-spmi-vadc.o
 obj-$(CONFIG_ROCKCHIP_SARADC) += rockchip_saradc.o
 obj-$(CONFIG_TI_ADC081C) += ti-adc081c.o
 obj-$(CONFIG_TI_ADC128S052) += ti-adc128s052.o

drivers/iio/common/Kconfig

@@ -3,4 +3,5 @@
 #
 
 source "drivers/iio/common/hid-sensors/Kconfig"
+source "drivers/iio/common/ssp_sensors/Kconfig"
 source "drivers/iio/common/st_sensors/Kconfig"

drivers/iio/common/Makefile

@@ -8,4 +8,5 @@
 
 # When adding new entries keep the list in alphabetical order
 obj-y += hid-sensors/
+obj-y += ssp_sensors/
 obj-y += st_sensors/

drivers/iio/common/hid-sensors/hid-sensor-trigger.h

@@ -19,6 +19,11 @@
 #ifndef _HID_SENSOR_TRIGGER_H
 #define _HID_SENSOR_TRIGGER_H
 
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+
+extern const struct dev_pm_ops hid_sensor_pm_ops;
+
 int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
 				struct hid_sensor_common *attrb);
 void hid_sensor_remove_trigger(struct hid_sensor_common *attrb);

drivers/iio/common/ssp_sensors/Kconfig

+#
+# SSP sensor drivers and commons configuration
+#
+menu "SSP Sensor Common"
+
+config IIO_SSP_SENSORS_COMMONS
+	tristate "Commons for all SSP Sensor IIO drivers"
+	depends on IIO_SSP_SENSORHUB
+	select IIO_BUFFER
+	select IIO_KFIFO_BUF
+	help
+	  Say yes here to build commons for SSP sensors.
+	  To compile this as a module, choose M here: the module
+	  will be called ssp_iio.
+
+config IIO_SSP_SENSORHUB
+	tristate "Samsung Sensorhub driver"
+	depends on SPI
+	select MFD_CORE
+	help
+	  SSP driver for sensorhub.
+	  If you say yes here you get ssp support for sensorhub.
+	  To compile this driver as a module, choose M here: the
+	  module will be called sensorhub.
+
+endmenu