Merge tag 'iio-for-4.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First set of IIO new device support, features and cleanup for the 4.12 cycle.

Quite a bit of outreachy activity here with a driver from a current intern
and a number of cleanup patches as part of the next round.

Getting a pull request in early this cycle as it's looking like another large
cycle for IIO.

New device support
* adxl345
  - initial device support. Note, once complete support is done the intent
    is to superceded the driver in input/misc.
  - bindings.
  - conversion from i2c direct calls to regmap and driver split.
  - spi support.
* chromeos light and proximity.
  - new driver.
* devantech srf04 ultrasonic ranger
  - new driver with device tree bindings.
* hid temperature
  - new driver for environemntal temperature support from hid devices.
* max30102 oximeter
  - new driver with device tree bindings.
* st lsm6dsx
  - refactor and addition of device support for lsm6dsl and lsm6ds3h.

Staging graduation
* isl29028 including copyright notice update to reflect Brian's work.
* lpc32xx_adc.
* spear adc. It's not perfect and there are some datasheet disagreements, but
  it works and is good enough to graduate.

New features
* documentation
  - abi docs for in_proximity_sampling_frequency_available.
  - generalise counting direction ABI docs as a second driver is going to
  use them.
* hid-sensor-prox
  - Add support for HID_USAGE_SENSOR_HUMAN_PRESENCE if used on a particular
  device.
* isl29028
  - runtime pm.
* meson-saradc
  - switch from polling to interrupt mode and improved read_raw_sample function
  to avoid unnecessary loop.
* tmp007
  - interrupt and threshold event support.

Cleanups and minor fixes
* ad2s1210
  - permissions to octal.
* ad7192
  - permissions to octal.
  - use BIT macro.
* ad9832
  - merge header definitions into source file.
* ad9834
  - merge header definitions into source file.
* ade7753
  - merge header definitions into source file.
  - cleanup include ordering.
* ade7854
  - simplify return logic.
* adis16201
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adis16203
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adis16209
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adis16240
  - permissions to octal.
  - merge header definitions into source file.
  - rename _core.c to .c as there is nothing else.
* adt7136
  - permissions to octal.
* cio-dac
  - set missing parent device.
* documentation
  - update version numbers on sysfs ABI for counter bits that didn't quite.
  make 4.9.
* isl29028
  - mdelay to msleep.
  - incorrrect sleep time when taking first proximity reading.
* lmp91000
  - set missing parent device.
* lpc32xx
  - Consistent prefixes for defines.
  - rename local state structure to _state.
* max30100
  - set missing parent device.
* max30102
  - set missing parent device.
* maxim-thermocouple
  - set missing parent device.
* meter driver header
  - permissions to octal.
* pulsedlight-lidar-lite-v2
  - set missing parent device.
* quad-8
  - set missing parent device.
* st104
  - set missing parent device.

Other
* Mailmap
  - update Matt Ranostay's email address to the Konsolko one.

39 files changed, 2872 insertions, 56 deletions

diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index ef8401ac1141..15de262015df 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -5,6 +5,37 @@
 
 menu "Accelerometers"
 
+config ADXL345
+	tristate
+
+config ADXL345_I2C
+	tristate "Analog Devices ADXL345 3-Axis Digital Accelerometer I2C Driver"
+	depends on INPUT_ADXL34X=n
+	depends on I2C
+	select ADXL345
+	select REGMAP_I2C
+	help
+	  Say Y here if you want to build support for the Analog Devices
+	  ADXL345 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl345_i2c and you will also get adxl345_core
+	  for the core module.
+
+config ADXL345_SPI
+	tristate "Analog Devices ADXL345 3-Axis Digital Accelerometer SPI Driver"
+	depends on INPUT_ADXL34X=n
+	depends on SPI
+	select ADXL345
+	select REGMAP_SPI
+	help
+	  Say Y here if you want to build support for the Analog Devices
+	  ADXL345 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl345_spi and you will also get adxl345_core
+	  for the core module.
+
 config BMA180
 	tristate "Bosch BMA180/BMA250 3-Axis Accelerometer Driver"
 	depends on I2C
diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
index 69fe8edc57a2..31fba1974e95 100644
--- a/drivers/iio/accel/Makefile
+++ b/drivers/iio/accel/Makefile
@@ -3,6 +3,9 @@
 #
 
 # When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_ADXL345) += adxl345_core.o
+obj-$(CONFIG_ADXL345_I2C) += adxl345_i2c.o
+obj-$(CONFIG_ADXL345_SPI) += adxl345_spi.o
 obj-$(CONFIG_BMA180) += bma180.o
 obj-$(CONFIG_BMA220) += bma220_spi.o
 obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h
new file mode 100644
index 000000000000..c1ddf3927c47
--- /dev/null
+++ b/drivers/iio/accel/adxl345.h
@@ -0,0 +1,18 @@
+/*
+ * ADXL345 3-Axis Digital Accelerometer
+ *
+ * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License. See the file COPYING in the main
+ * directory of this archive for more details.
+ */
+
+#ifndef _ADXL345_H_
+#define _ADXL345_H_
+
+int adxl345_core_probe(struct device *dev, struct regmap *regmap,
+		       const char *name);
+int adxl345_core_remove(struct device *dev);
+
+#endif /* _ADXL345_H_ */
diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
new file mode 100644
index 000000000000..9ccb5828db98
--- /dev/null
+++ b/drivers/iio/accel/adxl345_core.c
@@ -0,0 +1,179 @@
+/*
+ * ADXL345 3-Axis Digital Accelerometer IIO core driver
+ *
+ * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License. See the file COPYING in the main
+ * directory of this archive for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+
+#include "adxl345.h"
+
+#define ADXL345_REG_DEVID		0x00
+#define ADXL345_REG_POWER_CTL		0x2D
+#define ADXL345_REG_DATA_FORMAT		0x31
+#define ADXL345_REG_DATAX0		0x32
+#define ADXL345_REG_DATAY0		0x34
+#define ADXL345_REG_DATAZ0		0x36
+
+#define ADXL345_POWER_CTL_MEASURE	BIT(3)
+#define ADXL345_POWER_CTL_STANDBY	0x00
+
+#define ADXL345_DATA_FORMAT_FULL_RES	BIT(3) /* Up to 13-bits resolution */
+#define ADXL345_DATA_FORMAT_2G		0
+#define ADXL345_DATA_FORMAT_4G		1
+#define ADXL345_DATA_FORMAT_8G		2
+#define ADXL345_DATA_FORMAT_16G		3
+
+#define ADXL345_DEVID			0xE5
+
+/*
+ * In full-resolution mode, scale factor is maintained at ~4 mg/LSB
+ * in all g ranges.
+ *
+ * At +/- 16g with 13-bit resolution, scale is computed as:
+ * (16 + 16) * 9.81 / (2^13 - 1) = 0.0383
+ */
+static const int adxl345_uscale = 38300;
+
+struct adxl345_data {
+	struct regmap *regmap;
+	u8 data_range;
+};
+
+#define ADXL345_CHANNEL(reg, axis) {					\
+	.type = IIO_ACCEL,						\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##axis,					\
+	.address = reg,							\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),		\
+}
+
+static const struct iio_chan_spec adxl345_channels[] = {
+	ADXL345_CHANNEL(ADXL345_REG_DATAX0, X),
+	ADXL345_CHANNEL(ADXL345_REG_DATAY0, Y),
+	ADXL345_CHANNEL(ADXL345_REG_DATAZ0, Z),
+};
+
+static int adxl345_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long mask)
+{
+	struct adxl345_data *data = iio_priv(indio_dev);
+	__le16 regval;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		/*
+		 * Data is stored in adjacent registers:
+		 * ADXL345_REG_DATA(X0/Y0/Z0) contain the least significant byte
+		 * and ADXL345_REG_DATA(X0/Y0/Z0) + 1 the most significant byte
+		 */
+		ret = regmap_bulk_read(data->regmap, chan->address, &regval,
+				       sizeof(regval));
+		if (ret < 0)
+			return ret;
+
+		*val = sign_extend32(le16_to_cpu(regval), 12);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 0;
+		*val2 = adxl345_uscale;
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	}
+
+	return -EINVAL;
+}
+
+static const struct iio_info adxl345_info = {
+	.driver_module	= THIS_MODULE,
+	.read_raw	= adxl345_read_raw,
+};
+
+int adxl345_core_probe(struct device *dev, struct regmap *regmap,
+		       const char *name)
+{
+	struct adxl345_data *data;
+	struct iio_dev *indio_dev;
+	u32 regval;
+	int ret;
+
+	ret = regmap_read(regmap, ADXL345_REG_DEVID, &regval);
+	if (ret < 0) {
+		dev_err(dev, "Error reading device ID: %d\n", ret);
+		return ret;
+	}
+
+	if (regval != ADXL345_DEVID) {
+		dev_err(dev, "Invalid device ID: %x, expected %x\n",
+			regval, ADXL345_DEVID);
+		return -ENODEV;
+	}
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	dev_set_drvdata(dev, indio_dev);
+	data->regmap = regmap;
+	/* Enable full-resolution mode */
+	data->data_range = ADXL345_DATA_FORMAT_FULL_RES;
+
+	ret = regmap_write(data->regmap, ADXL345_REG_DATA_FORMAT,
+			   data->data_range);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set data range: %d\n", ret);
+		return ret;
+	}
+
+	indio_dev->dev.parent = dev;
+	indio_dev->name = name;
+	indio_dev->info = &adxl345_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adxl345_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adxl345_channels);
+
+	/* Enable measurement mode */
+	ret = regmap_write(data->regmap, ADXL345_REG_POWER_CTL,
+			   ADXL345_POWER_CTL_MEASURE);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enable measurement mode: %d\n", ret);
+		return ret;
+	}
+
+	ret = iio_device_register(indio_dev);
+	if (ret < 0) {
+		dev_err(dev, "iio_device_register failed: %d\n", ret);
+		regmap_write(data->regmap, ADXL345_REG_POWER_CTL,
+			     ADXL345_POWER_CTL_STANDBY);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(adxl345_core_probe);
+
+int adxl345_core_remove(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct adxl345_data *data = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+
+	return regmap_write(data->regmap, ADXL345_REG_POWER_CTL,
+			    ADXL345_POWER_CTL_STANDBY);
+}
+EXPORT_SYMBOL_GPL(adxl345_core_remove);
+
+MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
+MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer core driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/adxl345_i2c.c b/drivers/iio/accel/adxl345_i2c.c
new file mode 100644
index 000000000000..05e1ec49700c
--- /dev/null
+++ b/drivers/iio/accel/adxl345_i2c.c
@@ -0,0 +1,73 @@
+/*
+ * ADXL345 3-Axis Digital Accelerometer I2C driver
+ *
+ * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License. See the file COPYING in the main
+ * directory of this archive for more details.
+ *
+ * 7-bit I2C slave address: 0x1D (ALT ADDRESS pin tied to VDDIO) or
+ * 0x53 (ALT ADDRESS pin grounded)
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "adxl345.h"
+
+static const struct regmap_config adxl345_i2c_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static int adxl345_i2c_probe(struct i2c_client *client,
+			     const struct i2c_device_id *id)
+{
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
+			PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+
+	return adxl345_core_probe(&client->dev, regmap, id ? id->name : NULL);
+}
+
+static int adxl345_i2c_remove(struct i2c_client *client)
+{
+	return adxl345_core_remove(&client->dev);
+}
+
+static const struct i2c_device_id adxl345_i2c_id[] = {
+	{ "adxl345", 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);
+
+static const struct of_device_id adxl345_of_match[] = {
+	{ .compatible = "adi,adxl345" },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(of, adxl345_of_match);
+
+static struct i2c_driver adxl345_i2c_driver = {
+	.driver = {
+		.name	= "adxl345_i2c",
+		.of_match_table = adxl345_of_match,
+	},
+	.probe		= adxl345_i2c_probe,
+	.remove		= adxl345_i2c_remove,
+	.id_table	= adxl345_i2c_id,
+};
+
+module_i2c_driver(adxl345_i2c_driver);
+
+MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
+MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c
new file mode 100644
index 000000000000..6d658196f81c
--- /dev/null
+++ b/drivers/iio/accel/adxl345_spi.c
@@ -0,0 +1,81 @@
+/*
+ * ADXL345 3-Axis Digital Accelerometer SPI driver
+ *
+ * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
+ *
+ * This file is subject to the terms and conditions of version 2 of
+ * the GNU General Public License. See the file COPYING in the main
+ * directory of this archive for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "adxl345.h"
+
+#define ADXL345_MAX_SPI_FREQ_HZ		5000000
+
+static const struct regmap_config adxl345_spi_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	 /* Setting bits 7 and 6 enables multiple-byte read */
+	.read_flag_mask = BIT(7) | BIT(6),
+};
+
+static int adxl345_spi_probe(struct spi_device *spi)
+{
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct regmap *regmap;
+
+	/* Bail out if max_speed_hz exceeds 5 MHz */
+	if (spi->max_speed_hz > ADXL345_MAX_SPI_FREQ_HZ) {
+		dev_err(&spi->dev, "SPI CLK, %d Hz exceeds 5 MHz\n",
+			spi->max_speed_hz);
+		return -EINVAL;
+	}
+
+	regmap = devm_regmap_init_spi(spi, &adxl345_spi_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
+			PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+
+	return adxl345_core_probe(&spi->dev, regmap, id->name);
+}
+
+static int adxl345_spi_remove(struct spi_device *spi)
+{
+	return adxl345_core_remove(&spi->dev);
+}
+
+static const struct spi_device_id adxl345_spi_id[] = {
+	{ "adxl345", 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(spi, adxl345_spi_id);
+
+static const struct of_device_id adxl345_of_match[] = {
+	{ .compatible = "adi,adxl345" },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(of, adxl345_of_match);
+
+static struct spi_driver adxl345_spi_driver = {
+	.driver = {
+		.name	= "adxl345_spi",
+		.of_match_table = adxl345_of_match,
+	},
+	.probe		= adxl345_spi_probe,
+	.remove		= adxl345_spi_remove,
+	.id_table	= adxl345_spi_id,
+};
+
+module_spi_driver(adxl345_spi_driver);
+
+MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
+MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer SPI driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index dedae7adbce9..d777a972586d 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -305,6 +305,18 @@ config LPC18XX_ADC
 	  To compile this driver as a module, choose M here: the module will be
 	  called lpc18xx_adc.
 
+config LPC32XX_ADC
+	tristate "NXP LPC32XX ADC"
+	depends on ARCH_LPC32XX || COMPILE_TEST
+	depends on HAS_IOMEM
+	help
+	  Say yes here to build support for the integrated ADC inside the
+	  LPC32XX SoC. Note that this feature uses the same hardware as the
+	  touchscreen driver, so you should either select only one of the two
+	  drivers (lpc32xx_adc or lpc32xx_ts) or, in the OpenFirmware case,
+	  activate only one via device tree selection.  Provides direct access
+	  via sysfs.
+
 config LTC2485
 	tristate "Linear Technology LTC2485 ADC driver"
 	depends on I2C
@@ -494,6 +506,17 @@ config ROCKCHIP_SARADC
 	  To compile this driver as a module, choose M here: the
 	  module will be called rockchip_saradc.
 
+config SPEAR_ADC
+	tristate "ST SPEAr ADC"
+	depends on PLAT_SPEAR || COMPILE_TEST
+	depends on HAS_IOMEM
+	help
+	  Say yes here to build support for the integrated ADC inside the
+	  ST SPEAr SoC. Provides direct access via sysfs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called spear_adc.
+
 config STM32_ADC_CORE
 	tristate "STMicroelectronics STM32 adc core"
 	depends on ARCH_STM32 || COMPILE_TEST
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index d0012620cd1c..b11bb5767543 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_IMX7D_ADC) += imx7d_adc.o
 obj-$(CONFIG_INA2XX_ADC) += ina2xx-adc.o
 obj-$(CONFIG_LP8788_ADC) += lp8788_adc.o
 obj-$(CONFIG_LPC18XX_ADC) += lpc18xx_adc.o
+obj-$(CONFIG_LPC32XX_ADC) += lpc32xx_adc.o
 obj-$(CONFIG_LTC2485) += ltc2485.o
 obj-$(CONFIG_MAX1027) += max1027.o
 obj-$(CONFIG_MAX11100) += max11100.o
@@ -46,6 +47,7 @@ obj-$(CONFIG_QCOM_SPMI_IADC) += qcom-spmi-iadc.o
 obj-$(CONFIG_QCOM_SPMI_VADC) += qcom-spmi-vadc.o
 obj-$(CONFIG_RCAR_GYRO_ADC) += rcar-gyroadc.o
 obj-$(CONFIG_ROCKCHIP_SARADC) += rockchip_saradc.o
+obj-$(CONFIG_SPEAR_ADC) += spear_adc.o
 obj-$(CONFIG_STX104) += stx104.o
 obj-$(CONFIG_STM32_ADC_CORE) += stm32-adc-core.o
 obj-$(CONFIG_STM32_ADC) += stm32-adc.o
diff --git a/drivers/iio/adc/lpc32xx_adc.c b/drivers/iio/adc/lpc32xx_adc.c
new file mode 100644
index 000000000000..0de709b4288b
--- /dev/null
+++ b/drivers/iio/adc/lpc32xx_adc.c
@@ -0,0 +1,219 @@
+/*
+ *  lpc32xx_adc.c - Support for ADC in LPC32XX
+ *
+ *  3-channel, 10-bit ADC
+ *
+ *  Copyright (C) 2011, 2012 Roland Stigge <stigge@antcom.de>
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/completion.h>
+#include <linux/of.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+/*
+ * LPC32XX registers definitions
+ */
+#define LPC32XXAD_SELECT(x)	((x) + 0x04)
+#define LPC32XXAD_CTRL(x)	((x) + 0x08)
+#define LPC32XXAD_VALUE(x)	((x) + 0x48)
+
+/* Bit definitions for LPC32XXAD_SELECT: */
+/* constant, always write this value! */
+#define LPC32XXAD_REFm         0x00000200
+/* constant, always write this value! */
+#define LPC32XXAD_REFp		0x00000080
+ /* multiple of this is the channel number: 0, 1, 2 */
+#define LPC32XXAD_IN		0x00000010
+/* constant, always write this value! */
+#define LPC32XXAD_INTERNAL	0x00000004
+
+/* Bit definitions for LPC32XXAD_CTRL: */
+#define LPC32XXAD_STROBE	0x00000002
+#define LPC32XXAD_PDN_CTRL	0x00000004
+
+/* Bit definitions for LPC32XXAD_VALUE: */
+#define LPC32XXAD_VALUE_MASK	0x000003FF
+
+#define LPC32XXAD_NAME "lpc32xx-adc"
+
+struct lpc32xx_adc_state {
+	void __iomem *adc_base;
+	struct clk *clk;
+	struct completion completion;
+
+	u32 value;
+};
+
+static int lpc32xx_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val,
+			    int *val2,
+			    long mask)
+{
+	struct lpc32xx_adc_state *st = iio_priv(indio_dev);
+
+	if (mask == IIO_CHAN_INFO_RAW) {
+		mutex_lock(&indio_dev->mlock);
+		clk_prepare_enable(st->clk);
+		/* Measurement setup */
+		__raw_writel(LPC32XXAD_INTERNAL | (chan->address) |
+			     LPC32XXAD_REFp | LPC32XXAD_REFm,
+			     LPC32XXAD_SELECT(st->adc_base));
+		/* Trigger conversion */
+		__raw_writel(LPC32XXAD_PDN_CTRL | LPC32XXAD_STROBE,
+			     LPC32XXAD_CTRL(st->adc_base));
+		wait_for_completion(&st->completion); /* set by ISR */
+		clk_disable_unprepare(st->clk);
+		*val = st->value;
+		mutex_unlock(&indio_dev->mlock);
+
+		return IIO_VAL_INT;
+	}
+
+	return -EINVAL;
+}
+
+static const struct iio_info lpc32xx_adc_iio_info = {
+	.read_raw = &lpc32xx_read_raw,
+	.driver_module = THIS_MODULE,
+};
+
+#define LPC32XX_ADC_CHANNEL(_index) {			\
+	.type = IIO_VOLTAGE,				\
+	.indexed = 1,					\
+	.channel = _index,				\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),	\
+	.address = LPC32XXAD_IN * _index,		\
+	.scan_index = _index,				\
+}
+
+static const struct iio_chan_spec lpc32xx_adc_iio_channels[] = {
+	LPC32XX_ADC_CHANNEL(0),
+	LPC32XX_ADC_CHANNEL(1),
+	LPC32XX_ADC_CHANNEL(2),
+};
+
+static irqreturn_t lpc32xx_adc_isr(int irq, void *dev_id)
+{
+	struct lpc32xx_adc_state *st = dev_id;
+
+	/* Read value and clear irq */
+	st->value = __raw_readl(LPC32XXAD_VALUE(st->adc_base)) &
+		LPC32XXAD_VALUE_MASK;
+	complete(&st->completion);
+
+	return IRQ_HANDLED;
+}
+
+static int lpc32xx_adc_probe(struct platform_device *pdev)
+{
+	struct lpc32xx_adc_state *st = NULL;
+	struct resource *res;
+	int retval = -ENODEV;
+	struct iio_dev *iodev = NULL;
+	int irq;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "failed to get platform I/O memory\n");
+		return -ENXIO;
+	}
+
+	iodev = devm_iio_device_alloc(&pdev->dev, sizeof(*st));
+	if (!iodev)
+		return -ENOMEM;
+
+	st = iio_priv(iodev);
+
+	st->adc_base = devm_ioremap(&pdev->dev, res->start,
+				    resource_size(res));
+	if (!st->adc_base) {
+		dev_err(&pdev->dev, "failed mapping memory\n");
+		return -EBUSY;
+	}
+
+	st->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(st->clk)) {
+		dev_err(&pdev->dev, "failed getting clock\n");
+		return PTR_ERR(st->clk);
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq <= 0) {
+		dev_err(&pdev->dev, "failed getting interrupt resource\n");
+		return -ENXIO;
+	}
+
+	retval = devm_request_irq(&pdev->dev, irq, lpc32xx_adc_isr, 0,
+				  LPC32XXAD_NAME, st);
+	if (retval < 0) {
+		dev_err(&pdev->dev, "failed requesting interrupt\n");
+		return retval;
+	}
+
+	platform_set_drvdata(pdev, iodev);
+
+	init_completion(&st->completion);
+
+	iodev->name = LPC32XXAD_NAME;
+	iodev->dev.parent = &pdev->dev;
+	iodev->info = &lpc32xx_adc_iio_info;
+	iodev->modes = INDIO_DIRECT_MODE;
+	iodev->channels = lpc32xx_adc_iio_channels;
+	iodev->num_channels = ARRAY_SIZE(lpc32xx_adc_iio_channels);
+
+	retval = devm_iio_device_register(&pdev->dev, iodev);
+	if (retval)
+		return retval;
+
+	dev_info(&pdev->dev, "LPC32XX ADC driver loaded, IRQ %d\n", irq);
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id lpc32xx_adc_match[] = {
+	{ .compatible = "nxp,lpc3220-adc" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, lpc32xx_adc_match);
+#endif
+
+static struct platform_driver lpc32xx_adc_driver = {
+	.probe		= lpc32xx_adc_probe,
+	.driver		= {
+		.name	= LPC32XXAD_NAME,
+		.of_match_table = of_match_ptr(lpc32xx_adc_match),
+	},
+};
+
+module_platform_driver(lpc32xx_adc_driver);
+
+MODULE_AUTHOR("Roland Stigge <stigge@antcom.de>");
+MODULE_DESCRIPTION("LPC32XX ADC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
index 89def6034f40..cde9ca7a01b8 100644
--- a/drivers/iio/adc/meson_saradc.c
+++ b/drivers/iio/adc/meson_saradc.c
@@ -18,7 +18,9 @@
 #include <linux/io.h>
 #include <linux/iio/iio.h>
 #include <linux/module.h>
+#include <linux/interrupt.h>
 #include <linux/of.h>
+#include <linux/of_irq.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
@@ -163,6 +165,7 @@
 	#define MESON_SAR_ADC_REG13_12BIT_CALIBRATION_MASK	GENMASK(13, 8)
 
 #define MESON_SAR_ADC_MAX_FIFO_SIZE				32
+#define MESON_SAR_ADC_TIMEOUT					100 /* ms */
 
 #define MESON_SAR_ADC_CHAN(_chan) {					\
 	.type = IIO_VOLTAGE,						\
@@ -229,6 +232,7 @@ struct meson_sar_adc_priv {
 	struct clk_gate				clk_gate;
 	struct clk				*adc_div_clk;
 	struct clk_divider			clk_div;
+	struct completion			done;
 };
 
 static const struct regmap_config meson_sar_adc_regmap_config = {
@@ -274,33 +278,31 @@ static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev,
 					 int *val)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
-	int ret, regval, fifo_chan, fifo_val, sum = 0, count = 0;
+	int regval, fifo_chan, fifo_val, count;
 
-	ret = meson_sar_adc_wait_busy_clear(indio_dev);
-	if (ret)
-		return ret;
-
-	while (meson_sar_adc_get_fifo_count(indio_dev) > 0 &&
-	       count < MESON_SAR_ADC_MAX_FIFO_SIZE) {
-		regmap_read(priv->regmap, MESON_SAR_ADC_FIFO_RD, &regval);
-
-		fifo_chan = FIELD_GET(MESON_SAR_ADC_FIFO_RD_CHAN_ID_MASK,
-				      regval);
-		if (fifo_chan != chan->channel)
-			continue;
-
-		fifo_val = FIELD_GET(MESON_SAR_ADC_FIFO_RD_SAMPLE_VALUE_MASK,
-				     regval);
-		fifo_val &= (BIT(priv->data->resolution) - 1);
+	if(!wait_for_completion_timeout(&priv->done,
+				msecs_to_jiffies(MESON_SAR_ADC_TIMEOUT)))
+		return -ETIMEDOUT;
 
-		sum += fifo_val;
-		count++;
+	count = meson_sar_adc_get_fifo_count(indio_dev);
+	if (count != 1) {
+		dev_err(&indio_dev->dev,
+			"ADC FIFO has %d element(s) instead of one\n", count);
+		return -EINVAL;
 	}
 
-	if (!count)
-		return -ENOENT;
+	regmap_read(priv->regmap, MESON_SAR_ADC_FIFO_RD, &regval);
+	fifo_chan = FIELD_GET(MESON_SAR_ADC_FIFO_RD_CHAN_ID_MASK, regval);
+	if (fifo_chan != chan->channel) {
+		dev_err(&indio_dev->dev,
+			"ADC FIFO entry belongs to channel %d instead of %d\n",
+			fifo_chan, chan->channel);
+		return -EINVAL;
+	}
 
-	*val = sum / count;
+	fifo_val = FIELD_GET(MESON_SAR_ADC_FIFO_RD_SAMPLE_VALUE_MASK, regval);
+	fifo_val &= GENMASK(priv->data->resolution - 1, 0);
+	*val = fifo_val;
 
 	return 0;
 }
@@ -378,6 +380,12 @@ static void meson_sar_adc_start_sample_engine(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
 
+	reinit_completion(&priv->done);
+
+	regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0,
+			   MESON_SAR_ADC_REG0_FIFO_IRQ_EN,
+			   MESON_SAR_ADC_REG0_FIFO_IRQ_EN);
+
 	regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0,
 			   MESON_SAR_ADC_REG0_SAMPLE_ENGINE_ENABLE,
 			   MESON_SAR_ADC_REG0_SAMPLE_ENGINE_ENABLE);
@@ -392,6 +400,9 @@ static void meson_sar_adc_stop_sample_engine(struct iio_dev *indio_dev)
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
 
 	regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0,
+			   MESON_SAR_ADC_REG0_FIFO_IRQ_EN, 0);
+
+	regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0,
 			   MESON_SAR_ADC_REG0_SAMPLING_STOP,
 			   MESON_SAR_ADC_REG0_SAMPLING_STOP);
 
@@ -643,6 +654,7 @@ static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
 	int ret;
+	u32 regval;
 
 	ret = meson_sar_adc_lock(indio_dev);
 	if (ret)
@@ -667,6 +679,9 @@ static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev)
 		goto err_sana_clk;
 	}
 
+	regval = FIELD_PREP(MESON_SAR_ADC_REG0_FIFO_CNT_IRQ_MASK, 1);
+	regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0,
+			   MESON_SAR_ADC_REG0_FIFO_CNT_IRQ_MASK, regval);
 	regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG11,
 			   MESON_SAR_ADC_REG11_BANDGAP_EN,
 			   MESON_SAR_ADC_REG11_BANDGAP_EN);
@@ -728,6 +743,25 @@ static int meson_sar_adc_hw_disable(struct iio_dev *indio_dev)
 	return 0;
 }
 
+static irqreturn_t meson_sar_adc_irq(int irq, void *data)
+{
+	struct iio_dev *indio_dev = data;
+	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
+	unsigned int cnt, threshold;
+	u32 regval;
+
+	regmap_read(priv->regmap, MESON_SAR_ADC_REG0, &regval);
+	cnt = FIELD_GET(MESON_SAR_ADC_REG0_FIFO_COUNT_MASK, regval);
+	threshold = FIELD_GET(MESON_SAR_ADC_REG0_FIFO_CNT_IRQ_MASK, regval);
+
+	if (cnt < threshold)
+		return IRQ_NONE;
+
+	complete(&priv->done);
+
+	return IRQ_HANDLED;
+}
+
 static const struct iio_info meson_sar_adc_iio_info = {
 	.read_raw = meson_sar_adc_iio_info_read_raw,
 	.driver_module = THIS_MODULE,
@@ -770,7 +804,7 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
 	struct resource *res;
 	void __iomem *base;
 	const struct of_device_id *match;
-	int ret;
+	int irq, ret;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv));
 	if (!indio_dev) {
@@ -779,6 +813,7 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
 	}
 
 	priv = iio_priv(indio_dev);
+	init_completion(&priv->done);
 
 	match = of_match_device(meson_sar_adc_of_match, &pdev->dev);
 	priv->data = match->data;
@@ -797,6 +832,15 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
+	irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
+	if (!irq)
+		return -EINVAL;
+
+	ret = devm_request_irq(&pdev->dev, irq, meson_sar_adc_irq, IRQF_SHARED,
+			       dev_name(&pdev->dev), indio_dev);
+	if (ret)
+		return ret;
+
 	priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
 					     &meson_sar_adc_regmap_config);
 	if (IS_ERR(priv->regmap))
diff --git a/drivers/iio/adc/spear_adc.c b/drivers/iio/adc/spear_adc.c
new file mode 100644
index 000000000000..5dd61f6a57b9
--- /dev/null
+++ b/drivers/iio/adc/spear_adc.c
@@ -0,0 +1,395 @@
+/*
+ * ST SPEAr ADC driver
+ *
+ * Copyright 2012 Stefan Roese <sr@denx.de>
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/completion.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+/* SPEAR registers definitions */
+#define SPEAR600_ADC_SCAN_RATE_LO(x)	((x) & 0xFFFF)
+#define SPEAR600_ADC_SCAN_RATE_HI(x)	(((x) >> 0x10) & 0xFFFF)
+#define SPEAR_ADC_CLK_LOW(x)		(((x) & 0xf) << 0)
+#define SPEAR_ADC_CLK_HIGH(x)		(((x) & 0xf) << 4)
+
+/* Bit definitions for SPEAR_ADC_STATUS */
+#define SPEAR_ADC_STATUS_START_CONVERSION	BIT(0)
+#define SPEAR_ADC_STATUS_CHANNEL_NUM(x)		((x) << 1)
+#define SPEAR_ADC_STATUS_ADC_ENABLE		BIT(4)
+#define SPEAR_ADC_STATUS_AVG_SAMPLE(x)		((x) << 5)
+#define SPEAR_ADC_STATUS_VREF_INTERNAL		BIT(9)
+
+#define SPEAR_ADC_DATA_MASK		0x03ff
+#define SPEAR_ADC_DATA_BITS		10
+
+#define SPEAR_ADC_MOD_NAME "spear-adc"
+
+#define SPEAR_ADC_CHANNEL_NUM		8
+
+#define SPEAR_ADC_CLK_MIN			2500000
+#define SPEAR_ADC_CLK_MAX			20000000
+
+struct adc_regs_spear3xx {
+	u32 status;
+	u32 average;
+	u32 scan_rate;
+	u32 clk;	/* Not avail for 1340 & 1310 */
+	u32 ch_ctrl[SPEAR_ADC_CHANNEL_NUM];
+	u32 ch_data[SPEAR_ADC_CHANNEL_NUM];
+};
+
+struct chan_data {
+	u32 lsb;
+	u32 msb;
+};
+
+struct adc_regs_spear6xx {
+	u32 status;
+	u32 pad[2];
+	u32 clk;
+	u32 ch_ctrl[SPEAR_ADC_CHANNEL_NUM];
+	struct chan_data ch_data[SPEAR_ADC_CHANNEL_NUM];
+	u32 scan_rate_lo;
+	u32 scan_rate_hi;
+	struct chan_data average;
+};
+
+struct spear_adc_state {
+	struct device_node *np;
+	struct adc_regs_spear3xx __iomem *adc_base_spear3xx;
+	struct adc_regs_spear6xx __iomem *adc_base_spear6xx;
+	struct clk *clk;
+	struct completion completion;
+	u32 current_clk;
+	u32 sampling_freq;
+	u32 avg_samples;
+	u32 vref_external;
+	u32 value;
+};
+
+/*
+ * Functions to access some SPEAr ADC register. Abstracted into
+ * static inline functions, because of different register offsets
+ * on different SoC variants (SPEAr300 vs SPEAr600 etc).
+ */
+static void spear_adc_set_status(struct spear_adc_state *st, u32 val)
+{
+	__raw_writel(val, &st->adc_base_spear6xx->status);
+}
+
+static void spear_adc_set_clk(struct spear_adc_state *st, u32 val)
+{
+	u32 clk_high, clk_low, count;
+	u32 apb_clk = clk_get_rate(st->clk);
+
+	count = DIV_ROUND_UP(apb_clk, val);
+	clk_low = count / 2;
+	clk_high = count - clk_low;
+	st->current_clk = apb_clk / count;
+
+	__raw_writel(SPEAR_ADC_CLK_LOW(clk_low) | SPEAR_ADC_CLK_HIGH(clk_high),
+		     &st->adc_base_spear6xx->clk);
+}
+
+static void spear_adc_set_ctrl(struct spear_adc_state *st, int n,
+			       u32 val)
+{
+	__raw_writel(val, &st->adc_base_spear6xx->ch_ctrl[n]);
+}
+
+static u32 spear_adc_get_average(struct spear_adc_state *st)
+{
+	if (of_device_is_compatible(st->np, "st,spear600-adc")) {
+		return __raw_readl(&st->adc_base_spear6xx->average.msb) &
+			SPEAR_ADC_DATA_MASK;
+	} else {
+		return __raw_readl(&st->adc_base_spear3xx->average) &
+			SPEAR_ADC_DATA_MASK;
+	}
+}
+
+static void spear_adc_set_scanrate(struct spear_adc_state *st, u32 rate)
+{
+	if (of_device_is_compatible(st->np, "st,spear600-adc")) {
+		__raw_writel(SPEAR600_ADC_SCAN_RATE_LO(rate),
+			     &st->adc_base_spear6xx->scan_rate_lo);
+		__raw_writel(SPEAR600_ADC_SCAN_RATE_HI(rate),
+			     &st->adc_base_spear6xx->scan_rate_hi);
+	} else {
+		__raw_writel(rate, &st->adc_base_spear3xx->scan_rate);
+	}
+}
+
+static int spear_adc_read_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int *val,
+			      int *val2,
+			      long mask)
+{
+	struct spear_adc_state *st = iio_priv(indio_dev);
+	u32 status;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		mutex_lock(&indio_dev->mlock);
+
+		status = SPEAR_ADC_STATUS_CHANNEL_NUM(chan->channel) |
+			SPEAR_ADC_STATUS_AVG_SAMPLE(st->avg_samples) |
+			SPEAR_ADC_STATUS_START_CONVERSION |
+			SPEAR_ADC_STATUS_ADC_ENABLE;
+		if (st->vref_external == 0)
+			status |= SPEAR_ADC_STATUS_VREF_INTERNAL;
+
+		spear_adc_set_status(st, status);
+		wait_for_completion(&st->completion); /* set by ISR */
+		*val = st->value;
+
+		mutex_unlock(&indio_dev->mlock);
+
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		*val = st->vref_external;
+		*val2 = SPEAR_ADC_DATA_BITS;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = st->current_clk;
+		return IIO_VAL_INT;
+	}
+
+	return -EINVAL;
+}
+
+static int spear_adc_write_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int val,
+			       int val2,
+			       long mask)
+{
+	struct spear_adc_state *st = iio_priv(indio_dev);
+	int ret = 0;
+
+	if (mask != IIO_CHAN_INFO_SAMP_FREQ)
+		return -EINVAL;
+
+	mutex_lock(&indio_dev->mlock);
+
+	if ((val < SPEAR_ADC_CLK_MIN) ||
+	    (val > SPEAR_ADC_CLK_MAX) ||
+	    (val2 != 0)) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	spear_adc_set_clk(st, val);
+
+out:
+	mutex_unlock(&indio_dev->mlock);
+	return ret;
+}
+
+#define SPEAR_ADC_CHAN(idx) {				\
+	.type = IIO_VOLTAGE,				\
+	.indexed = 1,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),	\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),\
+	.channel = idx,					\
+}
+
+static const struct iio_chan_spec spear_adc_iio_channels[] = {
+	SPEAR_ADC_CHAN(0),
+	SPEAR_ADC_CHAN(1),
+	SPEAR_ADC_CHAN(2),
+	SPEAR_ADC_CHAN(3),
+	SPEAR_ADC_CHAN(4),
+	SPEAR_ADC_CHAN(5),
+	SPEAR_ADC_CHAN(6),
+	SPEAR_ADC_CHAN(7),
+};
+
+static irqreturn_t spear_adc_isr(int irq, void *dev_id)
+{
+	struct spear_adc_state *st = dev_id;
+
+	/* Read value to clear IRQ */
+	st->value = spear_adc_get_average(st);
+	complete(&st->completion);
+
+	return IRQ_HANDLED;
+}
+
+static int spear_adc_configure(struct spear_adc_state *st)
+{
+	int i;
+
+	/* Reset ADC core */
+	spear_adc_set_status(st, 0);
+	__raw_writel(0, &st->adc_base_spear6xx->clk);
+	for (i = 0; i < 8; i++)
+		spear_adc_set_ctrl(st, i, 0);
+	spear_adc_set_scanrate(st, 0);
+
+	spear_adc_set_clk(st, st->sampling_freq);
+
+	return 0;
+}
+
+static const struct iio_info spear_adc_info = {
+	.read_raw = &spear_adc_read_raw,
+	.write_raw = &spear_adc_write_raw,
+	.driver_module = THIS_MODULE,
+};
+
+static int spear_adc_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct device *dev = &pdev->dev;
+	struct spear_adc_state *st;
+	struct resource *res;
+	struct iio_dev *indio_dev = NULL;
+	int ret = -ENODEV;
+	int irq;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(struct spear_adc_state));
+	if (!indio_dev) {
+		dev_err(dev, "failed allocating iio device\n");
+		return -ENOMEM;
+	}
+
+	st = iio_priv(indio_dev);
+	st->np = np;
+
+	/*
+	 * SPEAr600 has a different register layout than other SPEAr SoC's
+	 * (e.g. SPEAr3xx). Let's provide two register base addresses
+	 * to support multi-arch kernels.
+	 */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	st->adc_base_spear6xx = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(st->adc_base_spear6xx))
+		return PTR_ERR(st->adc_base_spear6xx);
+
+	st->adc_base_spear3xx =
+		(struct adc_regs_spear3xx __iomem *)st->adc_base_spear6xx;
+
+	st->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(st->clk)) {
+		dev_err(dev, "failed getting clock\n");
+		return PTR_ERR(st->clk);
+	}
+
+	ret = clk_prepare_enable(st->clk);
+	if (ret) {
+		dev_err(dev, "failed enabling clock\n");
+		return ret;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq <= 0) {
+		dev_err(dev, "failed getting interrupt resource\n");
+		ret = -EINVAL;
+		goto errout2;
+	}
+
+	ret = devm_request_irq(dev, irq, spear_adc_isr, 0, SPEAR_ADC_MOD_NAME,
+			       st);
+	if (ret < 0) {
+		dev_err(dev, "failed requesting interrupt\n");
+		goto errout2;
+	}
+
+	if (of_property_read_u32(np, "sampling-frequency",
+				 &st->sampling_freq)) {
+		dev_err(dev, "sampling-frequency missing in DT\n");
+		ret = -EINVAL;
+		goto errout2;
+	}
+
+	/*
+	 * Optional avg_samples defaults to 0, resulting in single data
+	 * conversion
+	 */
+	of_property_read_u32(np, "average-samples", &st->avg_samples);
+
+	/*
+	 * Optional vref_external defaults to 0, resulting in internal vref
+	 * selection
+	 */
+	of_property_read_u32(np, "vref-external", &st->vref_external);
+
+	spear_adc_configure(st);
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	init_completion(&st->completion);
+
+	indio_dev->name = SPEAR_ADC_MOD_NAME;
+	indio_dev->dev.parent = dev;
+	indio_dev->info = &spear_adc_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = spear_adc_iio_channels;
+	indio_dev->num_channels = ARRAY_SIZE(spear_adc_iio_channels);
+
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		goto errout2;
+
+	dev_info(dev, "SPEAR ADC driver loaded, IRQ %d\n", irq);
+
+	return 0;
+
+errout2:
+	clk_disable_unprepare(st->clk);
+	return ret;
+}
+
+static int spear_adc_remove(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct spear_adc_state *st = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+	clk_disable_unprepare(st->clk);
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id spear_adc_dt_ids[] = {
+	{ .compatible = "st,spear600-adc", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, spear_adc_dt_ids);
+#endif
+
+static struct platform_driver spear_adc_driver = {
+	.probe		= spear_adc_probe,
+	.remove		= spear_adc_remove,
+	.driver		= {
+		.name	= SPEAR_ADC_MOD_NAME,
+		.of_match_table = of_match_ptr(spear_adc_dt_ids),
+	},
+};
+
+module_platform_driver(spear_adc_driver);
+
+MODULE_AUTHOR("Stefan Roese <sr@denx.de>");
+MODULE_DESCRIPTION("SPEAr ADC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/stx104.c b/drivers/iio/adc/stx104.c
index be2de48844bc..2df84fa5e3fc 100644
--- a/drivers/iio/adc/stx104.c
+++ b/drivers/iio/adc/stx104.c
@@ -318,6 +318,7 @@ static int stx104_probe(struct device *dev, unsigned int id)
 	}
 
 	indio_dev->name = dev_name(dev);
+	indio_dev->dev.parent = dev;
 
 	priv = iio_priv(indio_dev);
 	priv->base = base[id];
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
index 7afdac42ed42..9338f94ce1dc 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
@@ -62,6 +62,9 @@ static struct {
 	{HID_USAGE_SENSOR_TIME_TIMESTAMP, 0, 1000000000, 0},
 	{HID_USAGE_SENSOR_TIME_TIMESTAMP, HID_USAGE_SENSOR_UNITS_MILLISECOND,
 		1000000, 0},
+
+	{HID_USAGE_SENSOR_TEMPERATURE, 0, 1000, 0},
+	{HID_USAGE_SENSOR_TEMPERATURE, HID_USAGE_SENSOR_UNITS_DEGREES, 1000, 0},
 };
 
 static int pow_10(unsigned power)
diff --git a/drivers/iio/counter/104-quad-8.c b/drivers/iio/counter/104-quad-8.c
index f9b8fc9ae13f..ba3d9030cd51 100644
--- a/drivers/iio/counter/104-quad-8.c
+++ b/drivers/iio/counter/104-quad-8.c
@@ -551,6 +551,7 @@ static int quad8_probe(struct device *dev, unsigned int id)
 	indio_dev->num_channels = ARRAY_SIZE(quad8_channels);
 	indio_dev->channels = quad8_channels;
 	indio_dev->name = dev_name(dev);
+	indio_dev->dev.parent = dev;
 
 	priv = iio_priv(indio_dev);
 	priv->base = base[id];
diff --git a/drivers/iio/dac/cio-dac.c b/drivers/iio/dac/cio-dac.c
index 5a743e2a779d..a0464227a3a0 100644
--- a/drivers/iio/dac/cio-dac.c
+++ b/drivers/iio/dac/cio-dac.c
@@ -119,6 +119,7 @@ static int cio_dac_probe(struct device *dev, unsigned int id)
 	indio_dev->channels = cio_dac_channels;
 	indio_dev->num_channels = CIO_DAC_NUM_CHAN;
 	indio_dev->name = dev_name(dev);
+	indio_dev->dev.parent = dev;
 
 	priv = iio_priv(indio_dev);
 	priv->base = base[id];
diff --git a/drivers/iio/health/Kconfig b/drivers/iio/health/Kconfig
index c5f004a8e447..a2ecb4c94c2a 100644
--- a/drivers/iio/health/Kconfig
+++ b/drivers/iio/health/Kconfig
@@ -46,6 +46,19 @@ config MAX30100
 	  To compile this driver as a module, choose M here: the
 	  module will be called max30100.
 
+config MAX30102
+	tristate "MAX30102 heart rate and pulse oximeter sensor"
+	depends on I2C
+	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_KFIFO_BUF
+	help
+	  Say Y here to build I2C interface support for the Maxim
+	  MAX30102 heart rate, and pulse oximeter sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called max30102.
+
 endmenu
 
 endmenu
diff --git a/drivers/iio/health/Makefile b/drivers/iio/health/Makefile
index 9955a2ae8df1..3558f9d64954 100644
--- a/drivers/iio/health/Makefile
+++ b/drivers/iio/health/Makefile
@@ -7,3 +7,4 @@
 obj-$(CONFIG_AFE4403)		+= afe4403.o
 obj-$(CONFIG_AFE4404)		+= afe4404.o
 obj-$(CONFIG_MAX30100)		+= max30100.o
+obj-$(CONFIG_MAX30102)		+= max30102.o
diff --git a/drivers/iio/health/max30100.c b/drivers/iio/health/max30100.c
index f6e283c4d686..849d71747f9f 100644
--- a/drivers/iio/health/max30100.c
+++ b/drivers/iio/health/max30100.c
@@ -449,6 +449,7 @@ static int max30100_probe(struct i2c_client *client,
 	indio_dev->available_scan_masks = max30100_scan_masks;
 	indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE);
 	indio_dev->setup_ops = &max30100_buffer_setup_ops;
+	indio_dev->dev.parent = &client->dev;
 
 	data = iio_priv(indio_dev);
 	data->indio_dev = indio_dev;
diff --git a/drivers/iio/health/max30102.c b/drivers/iio/health/max30102.c
new file mode 100644
index 000000000000..839b875c29b9
--- /dev/null
+++ b/drivers/iio/health/max30102.c
@@ -0,0 +1,486 @@
+/*
+ * max30102.c - Support for MAX30102 heart rate and pulse oximeter sensor
+ *
+ * Copyright (C) 2017 Matt Ranostay <matt@ranostay.consulting>
+ *
+ * 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.
+ *
+ * TODO: proximity power saving feature
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/irq.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/kfifo_buf.h>
+
+#define MAX30102_REGMAP_NAME	"max30102_regmap"
+#define MAX30102_DRV_NAME	"max30102"
+
+#define MAX30102_REG_INT_STATUS			0x00
+#define MAX30102_REG_INT_STATUS_PWR_RDY		BIT(0)
+#define MAX30102_REG_INT_STATUS_PROX_INT	BIT(4)
+#define MAX30102_REG_INT_STATUS_ALC_OVF		BIT(5)
+#define MAX30102_REG_INT_STATUS_PPG_RDY		BIT(6)
+#define MAX30102_REG_INT_STATUS_FIFO_RDY	BIT(7)
+
+#define MAX30102_REG_INT_ENABLE			0x02
+#define MAX30102_REG_INT_ENABLE_PROX_INT_EN	BIT(4)
+#define MAX30102_REG_INT_ENABLE_ALC_OVF_EN	BIT(5)
+#define MAX30102_REG_INT_ENABLE_PPG_EN		BIT(6)
+#define MAX30102_REG_INT_ENABLE_FIFO_EN		BIT(7)
+#define MAX30102_REG_INT_ENABLE_MASK		0xf0
+#define MAX30102_REG_INT_ENABLE_MASK_SHIFT	4
+
+#define MAX30102_REG_FIFO_WR_PTR		0x04
+#define MAX30102_REG_FIFO_OVR_CTR		0x05
+#define MAX30102_REG_FIFO_RD_PTR		0x06
+#define MAX30102_REG_FIFO_DATA			0x07
+#define MAX30102_REG_FIFO_DATA_ENTRY_LEN	6
+
+#define MAX30102_REG_FIFO_CONFIG		0x08
+#define MAX30102_REG_FIFO_CONFIG_AVG_4SAMPLES	BIT(1)
+#define MAX30102_REG_FIFO_CONFIG_AVG_SHIFT	5
+#define MAX30102_REG_FIFO_CONFIG_AFULL		BIT(0)
+
+#define MAX30102_REG_MODE_CONFIG		0x09
+#define MAX30102_REG_MODE_CONFIG_MODE_SPO2_EN	BIT(0)
+#define MAX30102_REG_MODE_CONFIG_MODE_HR_EN	BIT(1)
+#define MAX30102_REG_MODE_CONFIG_MODE_MASK	0x03
+#define MAX30102_REG_MODE_CONFIG_PWR		BIT(7)
+
+#define MAX30102_REG_SPO2_CONFIG		0x0a
+#define MAX30102_REG_SPO2_CONFIG_PULSE_411_US	0x03
+#define MAX30102_REG_SPO2_CONFIG_SR_400HZ	0x03
+#define MAX30102_REG_SPO2_CONFIG_SR_MASK	0x07
+#define MAX30102_REG_SPO2_CONFIG_SR_MASK_SHIFT	2
+#define MAX30102_REG_SPO2_CONFIG_ADC_4096_STEPS	BIT(0)
+#define MAX30102_REG_SPO2_CONFIG_ADC_MASK_SHIFT	5
+
+#define MAX30102_REG_RED_LED_CONFIG		0x0c
+#define MAX30102_REG_IR_LED_CONFIG		0x0d
+
+#define MAX30102_REG_TEMP_CONFIG		0x21
+#define MAX30102_REG_TEMP_CONFIG_TEMP_EN	BIT(0)
+
+#define MAX30102_REG_TEMP_INTEGER		0x1f
+#define MAX30102_REG_TEMP_FRACTION		0x20
+
+struct max30102_data {
+	struct i2c_client *client;
+	struct iio_dev *indio_dev;
+	struct mutex lock;
+	struct regmap *regmap;
+
+	u8 buffer[8];
+	__be32 processed_buffer[2]; /* 2 x 18-bit (padded to 32-bits) */
+};
+
+static const struct regmap_config max30102_regmap_config = {
+	.name = MAX30102_REGMAP_NAME,
+
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static const unsigned long max30102_scan_masks[] = {0x3, 0};
+
+static const struct iio_chan_spec max30102_channels[] = {
+	{
+		.type = IIO_INTENSITY,
+		.channel2 = IIO_MOD_LIGHT_RED,
+		.modified = 1,
+
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 'u',
+			.shift = 8,
+			.realbits = 18,
+			.storagebits = 32,
+			.endianness = IIO_BE,
+		},
+	},
+	{
+		.type = IIO_INTENSITY,
+		.channel2 = IIO_MOD_LIGHT_IR,
+		.modified = 1,
+
+		.scan_index = 1,
+		.scan_type = {
+			.sign = 'u',
+			.shift = 8,
+			.realbits = 18,
+			.storagebits = 32,
+			.endianness = IIO_BE,
+		},
+	},
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.scan_index = -1,
+	},
+};
+
+static int max30102_set_powermode(struct max30102_data *data, bool state)
+{
+	return regmap_update_bits(data->regmap, MAX30102_REG_MODE_CONFIG,
+				  MAX30102_REG_MODE_CONFIG_PWR,
+				  state ? 0 : MAX30102_REG_MODE_CONFIG_PWR);
+}
+
+static int max30102_buffer_postenable(struct iio_dev *indio_dev)
+{
+	struct max30102_data *data = iio_priv(indio_dev);
+
+	return max30102_set_powermode(data, true);
+}
+
+static int max30102_buffer_predisable(struct iio_dev *indio_dev)
+{
+	struct max30102_data *data = iio_priv(indio_dev);
+
+	return max30102_set_powermode(data, false);
+}
+
+static const struct iio_buffer_setup_ops max30102_buffer_setup_ops = {
+	.postenable = max30102_buffer_postenable,
+	.predisable = max30102_buffer_predisable,
+};
+
+static inline int max30102_fifo_count(struct max30102_data *data)
+{
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(data->regmap, MAX30102_REG_INT_STATUS, &val);
+	if (ret)
+		return ret;
+
+	/* FIFO has one sample slot left */
+	if (val & MAX30102_REG_INT_STATUS_FIFO_RDY)
+		return 1;
+
+	return 0;
+}
+
+static int max30102_read_measurement(struct max30102_data *data)
+{
+	int ret;
+	u8 *buffer = (u8 *) &data->buffer;
+
+	ret = i2c_smbus_read_i2c_block_data(data->client,
+					    MAX30102_REG_FIFO_DATA,
+					    MAX30102_REG_FIFO_DATA_ENTRY_LEN,
+					    buffer);
+
+	memcpy(&data->processed_buffer[0], &buffer[0], 3);
+	memcpy(&data->processed_buffer[1], &buffer[3], 3);
+
+	return (ret == MAX30102_REG_FIFO_DATA_ENTRY_LEN) ? 0 : -EINVAL;
+}
+
+static irqreturn_t max30102_interrupt_handler(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct max30102_data *data = iio_priv(indio_dev);
+	int ret, cnt = 0;
+
+	mutex_lock(&data->lock);
+
+	while (cnt || (cnt = max30102_fifo_count(data)) > 0) {
+		ret = max30102_read_measurement(data);
+		if (ret)
+			break;
+
+		iio_push_to_buffers(data->indio_dev, data->processed_buffer);
+		cnt--;
+	}
+
+	mutex_unlock(&data->lock);
+
+	return IRQ_HANDLED;
+}
+
+static int max30102_get_current_idx(unsigned int val, int *reg)
+{
+	/* each step is 0.200 mA */
+	*reg = val / 200;
+
+	return *reg > 0xff ? -EINVAL : 0;
+}
+
+static int max30102_led_init(struct max30102_data *data)
+{
+	struct device *dev = &data->client->dev;
+	struct device_node *np = dev->of_node;
+	unsigned int val;
+	int reg, ret;
+
+	ret = of_property_read_u32(np, "maxim,red-led-current-microamp", &val);
+	if (ret) {
+		dev_info(dev, "no red-led-current-microamp set\n");
+
+		/* Default to 7 mA RED LED */
+		val = 7000;
+	}
+
+	ret = max30102_get_current_idx(val, &reg);
+	if (ret) {
+		dev_err(dev, "invalid RED LED current setting %d\n", val);
+		return ret;
+	}
+
+	ret = regmap_write(data->regmap, MAX30102_REG_RED_LED_CONFIG, reg);
+	if (ret)
+		return ret;
+
+	ret = of_property_read_u32(np, "maxim,ir-led-current-microamp", &val);
+	if (ret) {
+		dev_info(dev, "no ir-led-current-microamp set\n");
+
+		/* Default to 7 mA IR LED */
+		val = 7000;
+	}
+
+	ret = max30102_get_current_idx(val, &reg);
+	if (ret) {
+		dev_err(dev, "invalid IR LED current setting %d", val);
+		return ret;
+	}
+
+	return regmap_write(data->regmap, MAX30102_REG_IR_LED_CONFIG, reg);
+}
+
+static int max30102_chip_init(struct max30102_data *data)
+{
+	int ret;
+
+	/* setup LED current settings */
+	ret = max30102_led_init(data);
+	if (ret)
+		return ret;
+
+	/* enable 18-bit HR + SPO2 readings at 400Hz */
+	ret = regmap_write(data->regmap, MAX30102_REG_SPO2_CONFIG,
+				(MAX30102_REG_SPO2_CONFIG_ADC_4096_STEPS
+				 << MAX30102_REG_SPO2_CONFIG_ADC_MASK_SHIFT) |
+				(MAX30102_REG_SPO2_CONFIG_SR_400HZ
+				 << MAX30102_REG_SPO2_CONFIG_SR_MASK_SHIFT) |
+				 MAX30102_REG_SPO2_CONFIG_PULSE_411_US);
+	if (ret)
+		return ret;
+
+	/* enable SPO2 mode */
+	ret = regmap_update_bits(data->regmap, MAX30102_REG_MODE_CONFIG,
+				 MAX30102_REG_MODE_CONFIG_MODE_MASK,
+				 MAX30102_REG_MODE_CONFIG_MODE_HR_EN |
+				 MAX30102_REG_MODE_CONFIG_MODE_SPO2_EN);
+	if (ret)
+		return ret;
+
+	/* average 4 samples + generate FIFO interrupt */
+	ret = regmap_write(data->regmap, MAX30102_REG_FIFO_CONFIG,
+				(MAX30102_REG_FIFO_CONFIG_AVG_4SAMPLES
+				 << MAX30102_REG_FIFO_CONFIG_AVG_SHIFT) |
+				 MAX30102_REG_FIFO_CONFIG_AFULL);
+	if (ret)
+		return ret;
+
+	/* enable FIFO interrupt */
+	return regmap_update_bits(data->regmap, MAX30102_REG_INT_ENABLE,
+				 MAX30102_REG_INT_ENABLE_MASK,
+				 MAX30102_REG_INT_ENABLE_FIFO_EN);
+}
+
+static int max30102_read_temp(struct max30102_data *data, int *val)
+{
+	int ret;
+	unsigned int reg;
+
+	ret = regmap_read(data->regmap, MAX30102_REG_TEMP_INTEGER, &reg);
+	if (ret < 0)
+		return ret;
+	*val = reg << 4;
+
+	ret = regmap_read(data->regmap, MAX30102_REG_TEMP_FRACTION, &reg);
+	if (ret < 0)
+		return ret;
+
+	*val |= reg & 0xf;
+	*val = sign_extend32(*val, 11);
+
+	return 0;
+}
+
+static int max30102_get_temp(struct max30102_data *data, int *val)
+{
+	int ret;
+
+	/* start acquisition */
+	ret = regmap_update_bits(data->regmap, MAX30102_REG_TEMP_CONFIG,
+				 MAX30102_REG_TEMP_CONFIG_TEMP_EN,
+				 MAX30102_REG_TEMP_CONFIG_TEMP_EN);
+	if (ret)
+		return ret;
+
+	msleep(35);
+
+	return max30102_read_temp(data, val);
+}
+
+static int max30102_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct max30102_data *data = iio_priv(indio_dev);
+	int ret = -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		/*
+		 * Temperature reading can only be acquired while engine
+		 * is running
+		 */
+		mutex_lock(&indio_dev->mlock);
+
+		if (!iio_buffer_enabled(indio_dev))
+			ret = -EBUSY;
+		else {
+			ret = max30102_get_temp(data, val);
+			if (!ret)
+				ret = IIO_VAL_INT;
+		}
+
+		mutex_unlock(&indio_dev->mlock);
+		break;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 1;  /* 0.0625 */
+		*val2 = 16;
+		ret = IIO_VAL_FRACTIONAL;
+		break;
+	}
+
+	return ret;
+}
+
+static const struct iio_info max30102_info = {
+	.driver_module = THIS_MODULE,
+	.read_raw = max30102_read_raw,
+};
+
+static int max30102_probe(struct i2c_client *client,
+			  const struct i2c_device_id *id)
+{
+	struct max30102_data *data;
+	struct iio_buffer *buffer;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	buffer = devm_iio_kfifo_allocate(&client->dev);
+	if (!buffer)
+		return -ENOMEM;
+
+	iio_device_attach_buffer(indio_dev, buffer);
+
+	indio_dev->name = MAX30102_DRV_NAME;
+	indio_dev->channels = max30102_channels;
+	indio_dev->info = &max30102_info;
+	indio_dev->num_channels = ARRAY_SIZE(max30102_channels);
+	indio_dev->available_scan_masks = max30102_scan_masks;
+	indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE);
+	indio_dev->setup_ops = &max30102_buffer_setup_ops;
+	indio_dev->dev.parent = &client->dev;
+
+	data = iio_priv(indio_dev);
+	data->indio_dev = indio_dev;
+	data->client = client;
+
+	mutex_init(&data->lock);
+	i2c_set_clientdata(client, indio_dev);
+
+	data->regmap = devm_regmap_init_i2c(client, &max30102_regmap_config);
+	if (IS_ERR(data->regmap)) {
+		dev_err(&client->dev, "regmap initialization failed.\n");
+		return PTR_ERR(data->regmap);
+	}
+	max30102_set_powermode(data, false);
+
+	ret = max30102_chip_init(data);
+	if (ret)
+		return ret;
+
+	if (client->irq <= 0) {
+		dev_err(&client->dev, "no valid irq defined\n");
+		return -EINVAL;
+	}
+
+	ret = devm_request_threaded_irq(&client->dev, client->irq,
+					NULL, max30102_interrupt_handler,
+					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					"max30102_irq", indio_dev);
+	if (ret) {
+		dev_err(&client->dev, "request irq (%d) failed\n", client->irq);
+		return ret;
+	}
+
+	return iio_device_register(indio_dev);
+}
+
+static int max30102_remove(struct i2c_client *client)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct max30102_data *data = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+	max30102_set_powermode(data, false);
+
+	return 0;
+}
+
+static const struct i2c_device_id max30102_id[] = {
+	{ "max30102", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, max30102_id);
+
+static const struct of_device_id max30102_dt_ids[] = {
+	{ .compatible = "maxim,max30102" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, max30102_dt_ids);
+
+static struct i2c_driver max30102_driver = {
+	.driver = {
+		.name	= MAX30102_DRV_NAME,
+		.of_match_table	= of_match_ptr(max30102_dt_ids),
+	},
+	.probe		= max30102_probe,
+	.remove		= max30102_remove,
+	.id_table	= max30102_id,
+};
+module_i2c_driver(max30102_driver);
+
+MODULE_AUTHOR("Matt Ranostay <matt@ranostay.consulting>");
+MODULE_DESCRIPTION("MAX30102 heart rate and pulse oximeter sensor");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/imu/st_lsm6dsx/Kconfig b/drivers/iio/imu/st_lsm6dsx/Kconfig
index 935d4cd071a3..e57337159b57 100644
--- a/drivers/iio/imu/st_lsm6dsx/Kconfig
+++ b/drivers/iio/imu/st_lsm6dsx/Kconfig
@@ -8,7 +8,7 @@ config IIO_ST_LSM6DSX
 	select IIO_ST_LSM6DSX_SPI if (SPI_MASTER)
 	help
 	  Say yes here to build support for STMicroelectronics LSM6DSx imu
-	  sensor. Supported devices: lsm6ds3, lsm6dsm
+	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm
 
 	  To compile this driver as a module, choose M here: the module
 	  will be called st_lsm6dsx.
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index 69deafe1c10d..6a9849e6b30a 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -15,11 +15,16 @@
 #include <linux/device.h>
 
 #define ST_LSM6DS3_DEV_NAME	"lsm6ds3"
+#define ST_LSM6DS3H_DEV_NAME	"lsm6ds3h"
+#define ST_LSM6DSL_DEV_NAME	"lsm6dsl"
 #define ST_LSM6DSM_DEV_NAME	"lsm6dsm"
 
 enum st_lsm6dsx_hw_id {
 	ST_LSM6DS3_ID,
+	ST_LSM6DS3H_ID,
+	ST_LSM6DSL_ID,
 	ST_LSM6DSM_ID,
+	ST_LSM6DSX_MAX_ID,
 };
 
 #define ST_LSM6DSX_CHAN_SIZE		2
@@ -50,7 +55,7 @@ struct st_lsm6dsx_reg {
 struct st_lsm6dsx_settings {
 	u8 wai;
 	u16 max_fifo_size;
-	enum st_lsm6dsx_hw_id id;
+	enum st_lsm6dsx_hw_id id[ST_LSM6DSX_MAX_ID];
 };
 
 enum st_lsm6dsx_sensor_id {
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
index 78532ce07449..e71eccedd340 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
@@ -1,9 +1,10 @@
 /*
  * STMicroelectronics st_lsm6dsx FIFO buffer library driver
  *
- * LSM6DS3/LSM6DSM: The FIFO buffer can be configured to store data
- * from gyroscope and accelerometer. Samples are queued without any tag
- * according to a specific pattern based on 'FIFO data sets' (6 bytes each):
+ * LSM6DS3/LSM6DS3H/LSM6DSL/LSM6DSM: The FIFO buffer can be configured
+ * to store data from gyroscope and accelerometer. Samples are queued
+ * without any tag according to a specific pattern based on 'FIFO data sets'
+ * (6 bytes each):
  *  - 1st data set is reserved for gyroscope data
  *  - 2nd data set is reserved for accelerometer data
  * The FIFO pattern changes depending on the ODRs and decimation factors
@@ -206,7 +207,7 @@ out:
 }
 
 /**
- * st_lsm6dsx_read_fifo() - LSM6DS3-LSM6DSM read FIFO routine
+ * st_lsm6dsx_read_fifo() - LSM6DS3-LSM6DS3H-LSM6DSL-LSM6DSM read FIFO routine
  * @hw: Pointer to instance of struct st_lsm6dsx_hw.
  *
  * Read samples from the hw FIFO and push them to IIO buffers.
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index c92ddcc190e2..c4332232ad71 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -17,7 +17,7 @@
  *   - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
  *   - FIFO size: 8KB
  *
- * - LSM6DSM:
+ * - LSM6DS3H/LSM6DSL/LSM6DSM:
  *   - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416
  *   - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
  *   - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
@@ -74,12 +74,6 @@
 #define ST_LSM6DSX_REG_GYRO_OUT_Y_L_ADDR	0x24
 #define ST_LSM6DSX_REG_GYRO_OUT_Z_L_ADDR	0x26
 
-#define ST_LSM6DS3_WHOAMI			0x69
-#define ST_LSM6DSM_WHOAMI			0x6a
-
-#define ST_LSM6DS3_MAX_FIFO_SIZE		8192
-#define ST_LSM6DSM_MAX_FIFO_SIZE		4096
-
 #define ST_LSM6DSX_ACC_FS_2G_GAIN		IIO_G_TO_M_S_2(61)
 #define ST_LSM6DSX_ACC_FS_4G_GAIN		IIO_G_TO_M_S_2(122)
 #define ST_LSM6DSX_ACC_FS_8G_GAIN		IIO_G_TO_M_S_2(244)
@@ -164,14 +158,26 @@ static const struct st_lsm6dsx_fs_table_entry st_lsm6dsx_fs_table[] = {
 
 static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	{
-		.wai = ST_LSM6DS3_WHOAMI,
-		.max_fifo_size = ST_LSM6DS3_MAX_FIFO_SIZE,
-		.id = ST_LSM6DS3_ID,
+		.wai = 0x69,
+		.max_fifo_size = 8192,
+		.id = {
+			[0] = ST_LSM6DS3_ID,
+		},
 	},
 	{
-		.wai = ST_LSM6DSM_WHOAMI,
-		.max_fifo_size = ST_LSM6DSM_MAX_FIFO_SIZE,
-		.id = ST_LSM6DSM_ID,
+		.wai = 0x69,
+		.max_fifo_size = 4096,
+		.id = {
+			[0] = ST_LSM6DS3H_ID,
+		},
+	},
+	{
+		.wai = 0x6a,
+		.max_fifo_size = 4096,
+		.id = {
+			[0] = ST_LSM6DSL_ID,
+			[1] = ST_LSM6DSM_ID,
+		},
 	},
 };
 
@@ -241,11 +247,15 @@ out:
 
 static int st_lsm6dsx_check_whoami(struct st_lsm6dsx_hw *hw, int id)
 {
-	int err, i;
+	int err, i, j;
 	u8 data;
 
 	for (i = 0; i < ARRAY_SIZE(st_lsm6dsx_sensor_settings); i++) {
-		if (id == st_lsm6dsx_sensor_settings[i].id)
+		for (j = 0; j < ST_LSM6DSX_MAX_ID; j++) {
+			if (id == st_lsm6dsx_sensor_settings[i].id[j])
+				break;
+		}
+		if (j < ST_LSM6DSX_MAX_ID)
 			break;
 	}
 
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
index ea3041186e1e..2e4ed26fcbbd 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
@@ -71,6 +71,14 @@ static const struct of_device_id st_lsm6dsx_i2c_of_match[] = {
 		.data = (void *)ST_LSM6DS3_ID,
 	},
 	{
+		.compatible = "st,lsm6ds3h",
+		.data = (void *)ST_LSM6DS3H_ID,
+	},
+	{
+		.compatible = "st,lsm6dsl",
+		.data = (void *)ST_LSM6DSL_ID,
+	},
+	{
 		.compatible = "st,lsm6dsm",
 		.data = (void *)ST_LSM6DSM_ID,
 	},
@@ -80,6 +88,8 @@ MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match);
 
 static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = {
 	{ ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
+	{ ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
+	{ ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
 	{ ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
 	{},
 };
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
index fbe72470ed1e..1bf4a582e6cf 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
@@ -88,6 +88,14 @@ static const struct of_device_id st_lsm6dsx_spi_of_match[] = {
 		.data = (void *)ST_LSM6DS3_ID,
 	},
 	{
+		.compatible = "st,lsm6ds3h",
+		.data = (void *)ST_LSM6DS3H_ID,
+	},
+	{
+		.compatible = "st,lsm6dsl",
+		.data = (void *)ST_LSM6DSL_ID,
+	},
+	{
 		.compatible = "st,lsm6dsm",
 		.data = (void *)ST_LSM6DSM_ID,
 	},
@@ -97,6 +105,8 @@ MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
 
 static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
 	{ ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
+	{ ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
+	{ ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
 	{ ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
 	{},
 };
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index 5f731ead9d46..2afcbacc0f7e 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -136,6 +136,16 @@ config CM36651
 	 To compile this driver as a module, choose M here:
 	 the module will be called cm36651.
 
+config IIO_CROS_EC_LIGHT_PROX
+	tristate "ChromeOS EC Light and Proximity Sensors"
+	depends on IIO_CROS_EC_SENSORS_CORE
+	help
+	  Say Y here if you use the light and proximity sensors
+	  presented by the ChromeOS EC Sensor hub.
+
+	  To compile this driver as a module, choose M here:
+	  the module will be called cros_ec_light_prox.
+
 config GP2AP020A00F
 	tristate "Sharp GP2AP020A00F Proximity/ALS sensor"
 	depends on I2C
diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile
index c13a2399e6df..edfd69b6dc6d 100644
--- a/drivers/iio/light/Makefile
+++ b/drivers/iio/light/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_CM3232)		+= cm3232.o
 obj-$(CONFIG_CM3323)		+= cm3323.o
 obj-$(CONFIG_CM3605)		+= cm3605.o
 obj-$(CONFIG_CM36651)		+= cm36651.o
+obj-$(CONFIG_IIO_CROS_EC_LIGHT_PROX) += cros_ec_light_prox.o
 obj-$(CONFIG_GP2AP020A00F)	+= gp2ap020a00f.o
 obj-$(CONFIG_HID_SENSOR_ALS)	+= hid-sensor-als.o
 obj-$(CONFIG_HID_SENSOR_PROX)	+= hid-sensor-prox.o
diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
new file mode 100644
index 000000000000..721722376fd0
--- /dev/null
+++ b/drivers/iio/light/cros_ec_light_prox.c
@@ -0,0 +1,289 @@
+/*
+ * cros_ec_light_prox - Driver for light and prox sensors behing CrosEC.
+ *
+ * Copyright (C) 2017 Google, Inc
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/kernel.h>
+#include <linux/mfd/cros_ec.h>
+#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+
+#include "../common/cros_ec_sensors/cros_ec_sensors_core.h"
+
+/*
+ * We only represent one entry for light or proximity. EC is merging different
+ * light sensors to return the what the eye would see. For proximity, we
+ * currently support only one light source.
+ */
+#define CROS_EC_LIGHT_PROX_MAX_CHANNELS (1 + 1)
+
+/* State data for ec_sensors iio driver. */
+struct cros_ec_light_prox_state {
+	/* Shared by all sensors */
+	struct cros_ec_sensors_core_state core;
+
+	struct iio_chan_spec channels[CROS_EC_LIGHT_PROX_MAX_CHANNELS];
+};
+
+static int cros_ec_light_prox_read(struct iio_dev *indio_dev,
+				   struct iio_chan_spec const *chan,
+				   int *val, int *val2, long mask)
+{
+	struct cros_ec_light_prox_state *st = iio_priv(indio_dev);
+	u16 data = 0;
+	s64 val64;
+	int ret = IIO_VAL_INT;
+	int idx = chan->scan_index;
+
+	mutex_lock(&st->core.cmd_lock);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (chan->type == IIO_PROXIMITY) {
+			if (cros_ec_sensors_read_cmd(indio_dev, 1 << idx,
+						     (s16 *)&data) < 0) {
+				ret = -EIO;
+				break;
+			}
+			*val = data;
+		} else {
+			ret = -EINVAL;
+		}
+		break;
+	case IIO_CHAN_INFO_PROCESSED:
+		if (chan->type == IIO_LIGHT) {
+			if (cros_ec_sensors_read_cmd(indio_dev, 1 << idx,
+						     (s16 *)&data) < 0) {
+				ret = -EIO;
+				break;
+			}
+			/*
+			 * The data coming from the light sensor is
+			 * pre-processed and represents the ambient light
+			 * illuminance reading expressed in lux.
+			 */
+			*val = data;
+			ret = IIO_VAL_INT;
+		} else {
+			ret = -EINVAL;
+		}
+		break;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_OFFSET;
+		st->core.param.sensor_offset.flags = 0;
+
+		if (cros_ec_motion_send_host_cmd(&st->core, 0)) {
+			ret = -EIO;
+			break;
+		}
+
+		/* Save values */
+		st->core.calib[0] = st->core.resp->sensor_offset.offset[0];
+
+		*val = st->core.calib[idx];
+		break;
+	case IIO_CHAN_INFO_CALIBSCALE:
+		/*
+		 * RANGE is used for calibration
+		 * scale is a number x.y, where x is coded on 16 bits,
+		 * y coded on 16 bits, between 0 and 9999.
+		 */
+		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;
+		st->core.param.sensor_range.data = EC_MOTION_SENSE_NO_VALUE;
+
+		if (cros_ec_motion_send_host_cmd(&st->core, 0)) {
+			ret = -EIO;
+			break;
+		}
+
+		val64 = st->core.resp->sensor_range.ret;
+		*val = val64 >> 16;
+		*val2 = (val64 & 0xffff) * 100;
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
+	default:
+		ret = cros_ec_sensors_core_read(&st->core, chan, val, val2,
+						mask);
+		break;
+	}
+
+	mutex_unlock(&st->core.cmd_lock);
+
+	return ret;
+}
+
+static int cros_ec_light_prox_write(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int val, int val2, long mask)
+{
+	struct cros_ec_light_prox_state *st = iio_priv(indio_dev);
+	int ret = 0;
+	int idx = chan->scan_index;
+
+	mutex_lock(&st->core.cmd_lock);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		st->core.calib[idx] = val;
+		/* Send to EC for each axis, even if not complete */
+		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_OFFSET;
+		st->core.param.sensor_offset.flags = MOTION_SENSE_SET_OFFSET;
+		st->core.param.sensor_offset.offset[0] = st->core.calib[0];
+		st->core.param.sensor_offset.temp =
+					EC_MOTION_SENSE_INVALID_CALIB_TEMP;
+		if (cros_ec_motion_send_host_cmd(&st->core, 0))
+			ret = -EIO;
+		break;
+	case IIO_CHAN_INFO_CALIBSCALE:
+		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;
+		st->core.param.sensor_range.data = (val << 16) | (val2 / 100);
+		if (cros_ec_motion_send_host_cmd(&st->core, 0))
+			ret = -EIO;
+		break;
+	default:
+		ret = cros_ec_sensors_core_write(&st->core, chan, val, val2,
+						 mask);
+		break;
+	}
+
+	mutex_unlock(&st->core.cmd_lock);
+
+	return ret;
+}
+
+static const struct iio_info cros_ec_light_prox_info = {
+	.read_raw = &cros_ec_light_prox_read,
+	.write_raw = &cros_ec_light_prox_write,
+	.driver_module = THIS_MODULE,
+};
+
+static int cros_ec_light_prox_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent);
+	struct cros_ec_device *ec_device;
+	struct iio_dev *indio_dev;
+	struct cros_ec_light_prox_state *state;
+	struct iio_chan_spec *channel;
+	int ret;
+
+	if (!ec_dev || !ec_dev->ec_dev) {
+		dev_warn(dev, "No CROS EC device found.\n");
+		return -EINVAL;
+	}
+	ec_device = ec_dev->ec_dev;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*state));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	if (ret)
+		return ret;
+
+	indio_dev->info = &cros_ec_light_prox_info;
+	state = iio_priv(indio_dev);
+	state->core.type = state->core.resp->info.type;
+	state->core.loc = state->core.resp->info.location;
+	channel = state->channels;
+
+	/* Common part */
+	channel->info_mask_shared_by_all =
+		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+		BIT(IIO_CHAN_INFO_FREQUENCY);
+	channel->scan_type.realbits = CROS_EC_SENSOR_BITS;
+	channel->scan_type.storagebits = CROS_EC_SENSOR_BITS;
+	channel->scan_type.shift = 0;
+	channel->scan_index = 0;
+	channel->ext_info = cros_ec_sensors_ext_info;
+	channel->scan_type.sign = 'u';
+
+	state->core.calib[0] = 0;
+
+	/* Sensor specific */
+	switch (state->core.type) {
+	case MOTIONSENSE_TYPE_LIGHT:
+		channel->type = IIO_LIGHT;
+		channel->info_mask_separate =
+			BIT(IIO_CHAN_INFO_PROCESSED) |
+			BIT(IIO_CHAN_INFO_CALIBBIAS) |
+			BIT(IIO_CHAN_INFO_CALIBSCALE);
+		break;
+	case MOTIONSENSE_TYPE_PROX:
+		channel->type = IIO_PROXIMITY;
+		channel->info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_CALIBBIAS) |
+			BIT(IIO_CHAN_INFO_CALIBSCALE);
+		break;
+	default:
+		dev_warn(dev, "Unknown motion sensor\n");
+		return -EINVAL;
+	}
+
+	/* Timestamp */
+	channel++;
+	channel->type = IIO_TIMESTAMP;
+	channel->channel = -1;
+	channel->scan_index = 1;
+	channel->scan_type.sign = 's';
+	channel->scan_type.realbits = 64;
+	channel->scan_type.storagebits = 64;
+
+	indio_dev->channels = state->channels;
+
+	indio_dev->num_channels = CROS_EC_LIGHT_PROX_MAX_CHANNELS;
+
+	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+					      cros_ec_sensors_capture, NULL);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct platform_device_id cros_ec_light_prox_ids[] = {
+	{
+		.name = "cros-ec-prox",
+	},
+	{
+		.name = "cros-ec-light",
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, cros_ec_light_prox_ids);
+
+static struct platform_driver cros_ec_light_prox_platform_driver = {
+	.driver = {
+		.name	= "cros-ec-light-prox",
+	},
+	.probe		= cros_ec_light_prox_probe,
+	.id_table	= cros_ec_light_prox_ids,
+};
+module_platform_driver(cros_ec_light_prox_platform_driver);
+
+MODULE_DESCRIPTION("ChromeOS EC light/proximity sensors driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c
index 45ca056f019e..73fced8a63b7 100644
--- a/drivers/iio/light/hid-sensor-prox.c
+++ b/drivers/iio/light/hid-sensor-prox.c
@@ -240,6 +240,13 @@ static int prox_parse_report(struct platform_device *pdev,
 			st->common_attributes.sensitivity.index,
 			st->common_attributes.sensitivity.report_id);
 	}
+	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_HUMAN_PRESENCE,
+			&st->common_attributes.sensitivity);
+
 	return ret;
 }
 
diff --git a/drivers/iio/potentiostat/lmp91000.c b/drivers/iio/potentiostat/lmp91000.c
index e22714365022..afa8de3418d0 100644
--- a/drivers/iio/potentiostat/lmp91000.c
+++ b/drivers/iio/potentiostat/lmp91000.c
@@ -325,6 +325,7 @@ static int lmp91000_probe(struct i2c_client *client,
 	indio_dev->channels = lmp91000_channels;
 	indio_dev->num_channels = ARRAY_SIZE(lmp91000_channels);
 	indio_dev->name = LMP91000_DRV_NAME;
+	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	i2c_set_clientdata(client, indio_dev);
 
diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig
index ab96cb7a0054..5b81a8c9d438 100644
--- a/drivers/iio/proximity/Kconfig
+++ b/drivers/iio/proximity/Kconfig
@@ -32,6 +32,17 @@ config LIDAR_LITE_V2
 	  To compile this driver as a module, choose M here: the
 	  module will be called pulsedlight-lite-v2
 
+config SRF04
+	tristate "Devantech SRF04 ultrasonic ranger sensor"
+	depends on GPIOLIB
+	help
+	  Say Y here to build a driver for Devantech SRF04 ultrasonic
+	  ranger sensor. This driver can be used to measure the distance
+	  of objects. It is using two GPIOs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called srf04.
+
 config SX9500
 	tristate "SX9500 Semtech proximity sensor"
 	select IIO_BUFFER
diff --git a/drivers/iio/proximity/Makefile b/drivers/iio/proximity/Makefile
index e914c2a5dd49..ed1b6f4cc209 100644
--- a/drivers/iio/proximity/Makefile
+++ b/drivers/iio/proximity/Makefile
@@ -5,5 +5,6 @@
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_AS3935)		+= as3935.o
 obj-$(CONFIG_LIDAR_LITE_V2)	+= pulsedlight-lidar-lite-v2.o
+obj-$(CONFIG_SRF04)		+= srf04.o
 obj-$(CONFIG_SRF08)		+= srf08.o
 obj-$(CONFIG_SX9500)		+= sx9500.o
diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index 20c16a08c9d9..36c1ddc251aa 100644
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -278,6 +278,7 @@ static int lidar_probe(struct i2c_client *client,
 	indio_dev->name = LIDAR_DRV_NAME;
 	indio_dev->channels = lidar_channels;
 	indio_dev->num_channels = ARRAY_SIZE(lidar_channels);
+	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	i2c_set_clientdata(client, indio_dev);
diff --git a/drivers/iio/proximity/srf04.c b/drivers/iio/proximity/srf04.c
new file mode 100644
index 000000000000..e37667f933b3
--- /dev/null
+++ b/drivers/iio/proximity/srf04.c
@@ -0,0 +1,304 @@
+/*
+ * SRF04: ultrasonic sensor for distance measuring by using GPIOs
+ *
+ * Copyright (c) 2017 Andreas Klinger <ak@it-klinger.de>
+ *
+ * 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.
+ *
+ * For details about the device see:
+ * http://www.robot-electronics.co.uk/htm/srf04tech.htm
+ *
+ * the measurement cycle as timing diagram looks like:
+ *
+ *          +---+
+ * GPIO     |   |
+ * trig:  --+   +------------------------------------------------------
+ *          ^   ^
+ *          |<->|
+ *         udelay(10)
+ *
+ * ultra           +-+ +-+ +-+
+ * sonic           | | | | | |
+ * burst: ---------+ +-+ +-+ +-----------------------------------------
+ *                           .
+ * ultra                     .              +-+ +-+ +-+
+ * sonic                     .              | | | | | |
+ * echo:  ----------------------------------+ +-+ +-+ +----------------
+ *                           .                        .
+ *                           +------------------------+
+ * GPIO                      |                        |
+ * echo:  -------------------+                        +---------------
+ *                           ^                        ^
+ *                           interrupt                interrupt
+ *                           (ts_rising)              (ts_falling)
+ *                           |<---------------------->|
+ *                              pulse time measured
+ *                              --> one round trip of ultra sonic waves
+ */
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+struct srf04_data {
+	struct device		*dev;
+	struct gpio_desc	*gpiod_trig;
+	struct gpio_desc	*gpiod_echo;
+	struct mutex		lock;
+	int			irqnr;
+	ktime_t			ts_rising;
+	ktime_t			ts_falling;
+	struct completion	rising;
+	struct completion	falling;
+};
+
+static irqreturn_t srf04_handle_irq(int irq, void *dev_id)
+{
+	struct iio_dev *indio_dev = dev_id;
+	struct srf04_data *data = iio_priv(indio_dev);
+	ktime_t now = ktime_get();
+
+	if (gpiod_get_value(data->gpiod_echo)) {
+		data->ts_rising = now;
+		complete(&data->rising);
+	} else {
+		data->ts_falling = now;
+		complete(&data->falling);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int srf04_read(struct srf04_data *data)
+{
+	int ret;
+	ktime_t ktime_dt;
+	u64 dt_ns;
+	u32 time_ns, distance_mm;
+
+	/*
+	 * just one read-echo-cycle can take place at a time
+	 * ==> lock against concurrent reading calls
+	 */
+	mutex_lock(&data->lock);
+
+	reinit_completion(&data->rising);
+	reinit_completion(&data->falling);
+
+	gpiod_set_value(data->gpiod_trig, 1);
+	udelay(10);
+	gpiod_set_value(data->gpiod_trig, 0);
+
+	/* it cannot take more than 20 ms */
+	ret = wait_for_completion_killable_timeout(&data->rising, HZ/50);
+	if (ret < 0) {
+		mutex_unlock(&data->lock);
+		return ret;
+	} else if (ret == 0) {
+		mutex_unlock(&data->lock);
+		return -ETIMEDOUT;
+	}
+
+	ret = wait_for_completion_killable_timeout(&data->falling, HZ/50);
+	if (ret < 0) {
+		mutex_unlock(&data->lock);
+		return ret;
+	} else if (ret == 0) {
+		mutex_unlock(&data->lock);
+		return -ETIMEDOUT;
+	}
+
+	ktime_dt = ktime_sub(data->ts_falling, data->ts_rising);
+
+	mutex_unlock(&data->lock);
+
+	dt_ns = ktime_to_ns(ktime_dt);
+	/*
+	 * measuring more than 3 meters is beyond the capabilities of
+	 * the sensor
+	 * ==> filter out invalid results for not measuring echos of
+	 *     another us sensor
+	 *
+	 * formula:
+	 *         distance       3 m
+	 * time = ---------- = --------- = 9404389 ns
+	 *          speed       319 m/s
+	 *
+	 * using a minimum speed at -20 °C of 319 m/s
+	 */
+	if (dt_ns > 9404389)
+		return -EIO;
+
+	time_ns = dt_ns;
+
+	/*
+	 * the speed as function of the temperature is approximately:
+	 *
+	 * speed = 331,5 + 0,6 * Temp
+	 *   with Temp in °C
+	 *   and speed in m/s
+	 *
+	 * use 343 m/s as ultrasonic speed at 20 °C here in absence of the
+	 * temperature
+	 *
+	 * therefore:
+	 *             time     343
+	 * distance = ------ * -----
+	 *             10^6       2
+	 *   with time in ns
+	 *   and distance in mm (one way)
+	 *
+	 * because we limit to 3 meters the multiplication with 343 just
+	 * fits into 32 bit
+	 */
+	distance_mm = time_ns * 343 / 2000000;
+
+	return distance_mm;
+}
+
+static int srf04_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *channel, int *val,
+			    int *val2, long info)
+{
+	struct srf04_data *data = iio_priv(indio_dev);
+	int ret;
+
+	if (channel->type != IIO_DISTANCE)
+		return -EINVAL;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		ret = srf04_read(data);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		/*
+		 * theoretical maximum resolution is 3 mm
+		 * 1 LSB is 1 mm
+		 */
+		*val = 0;
+		*val2 = 1000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info srf04_iio_info = {
+	.driver_module		= THIS_MODULE,
+	.read_raw		= srf04_read_raw,
+};
+
+static const struct iio_chan_spec srf04_chan_spec[] = {
+	{
+		.type = IIO_DISTANCE,
+		.info_mask_separate =
+				BIT(IIO_CHAN_INFO_RAW) |
+				BIT(IIO_CHAN_INFO_SCALE),
+	},
+};
+
+static int srf04_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct srf04_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(struct srf04_data));
+	if (!indio_dev) {
+		dev_err(dev, "failed to allocate IIO device\n");
+		return -ENOMEM;
+	}
+
+	data = iio_priv(indio_dev);
+	data->dev = dev;
+
+	mutex_init(&data->lock);
+	init_completion(&data->rising);
+	init_completion(&data->falling);
+
+	data->gpiod_trig = devm_gpiod_get(dev, "trig", GPIOD_OUT_LOW);
+	if (IS_ERR(data->gpiod_trig)) {
+		dev_err(dev, "failed to get trig-gpios: err=%ld\n",
+					PTR_ERR(data->gpiod_trig));
+		return PTR_ERR(data->gpiod_trig);
+	}
+
+	data->gpiod_echo = devm_gpiod_get(dev, "echo", GPIOD_IN);
+	if (IS_ERR(data->gpiod_echo)) {
+		dev_err(dev, "failed to get echo-gpios: err=%ld\n",
+					PTR_ERR(data->gpiod_echo));
+		return PTR_ERR(data->gpiod_echo);
+	}
+
+	if (gpiod_cansleep(data->gpiod_echo)) {
+		dev_err(data->dev, "cansleep-GPIOs not supported\n");
+		return -ENODEV;
+	}
+
+	data->irqnr = gpiod_to_irq(data->gpiod_echo);
+	if (data->irqnr < 0) {
+		dev_err(data->dev, "gpiod_to_irq: %d\n", data->irqnr);
+		return data->irqnr;
+	}
+
+	ret = devm_request_irq(dev, data->irqnr, srf04_handle_irq,
+			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+			pdev->name, indio_dev);
+	if (ret < 0) {
+		dev_err(data->dev, "request_irq: %d\n", ret);
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	indio_dev->name = "srf04";
+	indio_dev->dev.parent = &pdev->dev;
+	indio_dev->info = &srf04_iio_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = srf04_chan_spec;
+	indio_dev->num_channels = ARRAY_SIZE(srf04_chan_spec);
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct of_device_id of_srf04_match[] = {
+	{ .compatible = "devantech,srf04", },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, of_srf04_match);
+
+static struct platform_driver srf04_driver = {
+	.probe		= srf04_probe,
+	.driver		= {
+		.name		= "srf04-gpio",
+		.of_match_table	= of_srf04_match,
+	},
+};
+
+module_platform_driver(srf04_driver);
+
+MODULE_AUTHOR("Andreas Klinger <ak@it-klinger.de>");
+MODULE_DESCRIPTION("SRF04 ultrasonic sensor for distance measuring using GPIOs");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:srf04");
diff --git a/drivers/iio/temperature/Kconfig b/drivers/iio/temperature/Kconfig
index 3089e8d0a32d..5378976d6d27 100644
--- a/drivers/iio/temperature/Kconfig
+++ b/drivers/iio/temperature/Kconfig
@@ -19,6 +19,20 @@ config MAXIM_THERMOCOUPLE
 	  This driver can also be built as a module. If so, the module will
 	  be called maxim_thermocouple.
 
+config HID_SENSOR_TEMP
+	tristate "HID Environmental temperature sensor"
+	depends on HID_SENSOR_HUB
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select HID_SENSOR_IIO_COMMON
+	select HID_SENSOR_IIO_TRIGGER
+	help
+	  Say yes here to build support for the HID SENSOR
+	  temperature driver
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called hid-sensor-temperature.
+
 config MLX90614
 	tristate "MLX90614 contact-less infrared sensor"
 	depends on I2C
diff --git a/drivers/iio/temperature/Makefile b/drivers/iio/temperature/Makefile
index 4c4377480726..ad1d668de546 100644
--- a/drivers/iio/temperature/Makefile
+++ b/drivers/iio/temperature/Makefile
@@ -2,6 +2,7 @@
 # Makefile for industrial I/O temperature drivers
 #
 
+obj-$(CONFIG_HID_SENSOR_TEMP) += hid-sensor-temperature.o
 obj-$(CONFIG_MAXIM_THERMOCOUPLE) += maxim_thermocouple.o
 obj-$(CONFIG_MLX90614) += mlx90614.o
 obj-$(CONFIG_TMP006) += tmp006.o
diff --git a/drivers/iio/temperature/hid-sensor-temperature.c b/drivers/iio/temperature/hid-sensor-temperature.c
new file mode 100644
index 000000000000..c01efeca4002
--- /dev/null
+++ b/drivers/iio/temperature/hid-sensor-temperature.c
@@ -0,0 +1,311 @@
+/*
+ * HID Sensors Driver
+ * Copyright (c) 2017, 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.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.
+ */
+#include <linux/device.h>
+#include <linux/hid-sensor-hub.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "../common/hid-sensors/hid-sensor-trigger.h"
+
+struct temperature_state {
+	struct hid_sensor_common common_attributes;
+	struct hid_sensor_hub_attribute_info temperature_attr;
+	s32 temperature_data;
+	int scale_pre_decml;
+	int scale_post_decml;
+	int scale_precision;
+	int value_offset;
+};
+
+/* Channel definitions */
+static const struct iio_chan_spec temperature_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.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),
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(3),
+};
+
+/* Adjust channel real bits based on report descriptor */
+static void temperature_adjust_channel_bit_mask(struct iio_chan_spec *channels,
+					int channel, int size)
+{
+	channels[channel].scan_type.sign = 's';
+	/* Real storage bits will change based on the report desc. */
+	channels[channel].scan_type.realbits = size * 8;
+	/* Maximum size of a sample to capture is s32 */
+	channels[channel].scan_type.storagebits = sizeof(s32) * 8;
+}
+
+static int temperature_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2, long mask)
+{
+	struct temperature_state *temp_st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (chan->type != IIO_TEMP)
+			return -EINVAL;
+		hid_sensor_power_state(
+			&temp_st->common_attributes, true);
+		*val = sensor_hub_input_attr_get_raw_value(
+			temp_st->common_attributes.hsdev,
+			HID_USAGE_SENSOR_TEMPERATURE,
+			HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE,
+			temp_st->temperature_attr.report_id,
+			SENSOR_HUB_SYNC);
+		hid_sensor_power_state(
+				&temp_st->common_attributes,
+				false);
+
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		*val = temp_st->scale_pre_decml;
+		*val2 = temp_st->scale_post_decml;
+		return temp_st->scale_precision;
+
+	case IIO_CHAN_INFO_OFFSET:
+		*val = temp_st->value_offset;
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return hid_sensor_read_samp_freq_value(
+				&temp_st->common_attributes, val, val2);
+
+	case IIO_CHAN_INFO_HYSTERESIS:
+		return hid_sensor_read_raw_hyst_value(
+				&temp_st->common_attributes, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int temperature_write_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int val, int val2, long mask)
+{
+	struct temperature_state *temp_st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return hid_sensor_write_samp_freq_value(
+				&temp_st->common_attributes, val, val2);
+	case IIO_CHAN_INFO_HYSTERESIS:
+		return hid_sensor_write_raw_hyst_value(
+				&temp_st->common_attributes, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info temperature_info = {
+	.driver_module = THIS_MODULE,
+	.read_raw = &temperature_read_raw,
+	.write_raw = &temperature_write_raw,
+};
+
+/* Callback handler to send event after all samples are received and captured */
+static int temperature_proc_event(struct hid_sensor_hub_device *hsdev,
+				unsigned int usage_id, void *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct temperature_state *temp_st = iio_priv(indio_dev);
+
+	if (atomic_read(&temp_st->common_attributes.data_ready))
+		iio_push_to_buffers_with_timestamp(indio_dev,
+				&temp_st->temperature_data,
+				iio_get_time_ns(indio_dev));
+
+	return 0;
+}
+
+/* Capture samples in local storage */
+static int temperature_capture_sample(struct hid_sensor_hub_device *hsdev,
+				unsigned int usage_id, size_t raw_len,
+				char *raw_data, void *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct temperature_state *temp_st = iio_priv(indio_dev);
+
+	switch (usage_id) {
+	case HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE:
+		temp_st->temperature_data = *(s32 *)raw_data;
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+/* Parse report which is specific to an usage id*/
+static int temperature_parse_report(struct platform_device *pdev,
+				struct hid_sensor_hub_device *hsdev,
+				struct iio_chan_spec *channels,
+				unsigned int usage_id,
+				struct temperature_state *st)
+{
+	int ret;
+
+	ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT,
+			usage_id,
+			HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE,
+			&st->temperature_attr);
+	if (ret < 0)
+		return ret;
+
+	temperature_adjust_channel_bit_mask(channels, 0,
+					st->temperature_attr.size);
+
+	st->scale_precision = hid_sensor_format_scale(
+				HID_USAGE_SENSOR_TEMPERATURE,
+				&st->temperature_attr,
+				&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_ENVIRONMENTAL_TEMPERATURE,
+			&st->common_attributes.sensitivity);
+
+	return ret;
+}
+
+static struct hid_sensor_hub_callbacks temperature_callbacks = {
+	.send_event = &temperature_proc_event,
+	.capture_sample = &temperature_capture_sample,
+};
+
+/* Function to initialize the processing for usage id */
+static int hid_temperature_probe(struct platform_device *pdev)
+{
+	static const char *name = "temperature";
+	struct iio_dev *indio_dev;
+	struct temperature_state *temp_st;
+	struct iio_chan_spec *temp_chans;
+	struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*temp_st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	temp_st = iio_priv(indio_dev);
+	temp_st->common_attributes.hsdev = hsdev;
+	temp_st->common_attributes.pdev = pdev;
+
+	ret = hid_sensor_parse_common_attributes(hsdev,
+					HID_USAGE_SENSOR_TEMPERATURE,
+					&temp_st->common_attributes);
+	if (ret)
+		return ret;
+
+	temp_chans = devm_kmemdup(&indio_dev->dev, temperature_channels,
+				sizeof(temperature_channels), GFP_KERNEL);
+	if (!temp_chans)
+		return -ENOMEM;
+
+	ret = temperature_parse_report(pdev, hsdev, temp_chans,
+				HID_USAGE_SENSOR_TEMPERATURE, temp_st);
+	if (ret)
+		return ret;
+
+	indio_dev->channels = temp_chans;
+	indio_dev->num_channels = ARRAY_SIZE(temperature_channels);
+	indio_dev->dev.parent = &pdev->dev;
+	indio_dev->info = &temperature_info;
+	indio_dev->name = name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev,
+					&iio_pollfunc_store_time, NULL, NULL);
+	if (ret)
+		return ret;
+
+	atomic_set(&temp_st->common_attributes.data_ready, 0);
+	ret = hid_sensor_setup_trigger(indio_dev, name,
+				&temp_st->common_attributes);
+	if (ret)
+		return ret;
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	temperature_callbacks.pdev = pdev;
+	ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE,
+					&temperature_callbacks);
+	if (ret)
+		goto error_remove_trigger;
+
+	ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev);
+	if (ret)
+		goto error_remove_callback;
+
+	return ret;
+
+error_remove_callback:
+	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE);
+error_remove_trigger:
+	hid_sensor_remove_trigger(&temp_st->common_attributes);
+	return ret;
+}
+
+/* Function to deinitialize the processing for usage id */
+static int hid_temperature_remove(struct platform_device *pdev)
+{
+	struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct temperature_state *temp_st = iio_priv(indio_dev);
+
+	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE);
+	hid_sensor_remove_trigger(&temp_st->common_attributes);
+
+	return 0;
+}
+
+static const struct platform_device_id hid_temperature_ids[] = {
+	{
+		/* Format: HID-SENSOR-usage_id_in_hex_lowercase */
+		.name = "HID-SENSOR-200033",
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, hid_temperature_ids);
+
+static struct platform_driver hid_temperature_platform_driver = {
+	.id_table = hid_temperature_ids,
+	.driver = {
+		.name	= "temperature-sensor",
+		.pm	= &hid_sensor_pm_ops,
+	},
+	.probe		= hid_temperature_probe,
+	.remove		= hid_temperature_remove,
+};
+module_platform_driver(hid_temperature_platform_driver);
+
+MODULE_DESCRIPTION("HID Environmental temperature sensor");
+MODULE_AUTHOR("Song Hongyan <hongyan.song@intel.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c
index f962f31a5eb2..557214202eff 100644
--- a/drivers/iio/temperature/maxim_thermocouple.c
+++ b/drivers/iio/temperature/maxim_thermocouple.c
@@ -231,6 +231,7 @@ static int maxim_thermocouple_probe(struct spi_device *spi)
 	indio_dev->available_scan_masks = chip->scan_masks;
 	indio_dev->num_channels = chip->num_channels;
 	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->dev.parent = &spi->dev;
 
 	data = iio_priv(indio_dev);
 	data->spi = spi;
diff --git a/drivers/iio/temperature/tmp007.c b/drivers/iio/temperature/tmp007.c
index f04d0d1f6ac8..0615324d054c 100644
--- a/drivers/iio/temperature/tmp007.c
+++ b/drivers/iio/temperature/tmp007.c
@@ -11,9 +11,10 @@
  *
  * (7-bit I2C slave address (0x40 - 0x47), changeable via ADR pins)
  *
- * Note: This driver assumes that the sensor has been calibrated beforehand
- *
- * TODO: ALERT irq, limit threshold events
+ * Note:
+ * 1. This driver assumes that the sensor has been calibrated beforehand
+ * 2. Limit threshold events are enabled at the start
+ * 3. Operating mode: INT
  *
  */
 
@@ -24,25 +25,38 @@
 #include <linux/pm.h>
 #include <linux/bitops.h>
 #include <linux/of.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
+#include <linux/iio/events.h>
 
 #define TMP007_TDIE 0x01
 #define TMP007_CONFIG 0x02
 #define TMP007_TOBJECT 0x03
 #define TMP007_STATUS 0x04
 #define TMP007_STATUS_MASK 0x05
+#define TMP007_TOBJ_HIGH_LIMIT 0x06
+#define TMP007_TOBJ_LOW_LIMIT 0x07
+#define TMP007_TDIE_HIGH_LIMIT 0x08
+#define TMP007_TDIE_LOW_LIMIT 0x09
 #define TMP007_MANUFACTURER_ID 0x1e
 #define TMP007_DEVICE_ID 0x1f
 
 #define TMP007_CONFIG_CONV_EN BIT(12)
-#define TMP007_CONFIG_COMP_EN BIT(5)
 #define TMP007_CONFIG_TC_EN BIT(6)
 #define TMP007_CONFIG_CR_MASK GENMASK(11, 9)
+#define TMP007_CONFIG_ALERT_EN BIT(8)
 #define TMP007_CONFIG_CR_SHIFT 9
 
+/* Status register flags */
+#define TMP007_STATUS_ALERT BIT(15)
 #define TMP007_STATUS_CONV_READY BIT(14)
+#define TMP007_STATUS_OHF BIT(13)
+#define TMP007_STATUS_OLF BIT(12)
+#define TMP007_STATUS_LHF BIT(11)
+#define TMP007_STATUS_LLF BIT(10)
 #define TMP007_STATUS_DATA_VALID BIT(9)
 
 #define TMP007_MANUFACTURER_MAGIC 0x5449
@@ -52,7 +66,9 @@
 
 struct tmp007_data {
 	struct i2c_client *client;
+	struct mutex lock;
 	u16 config;
+	u16 status_mask;
 };
 
 static const int tmp007_avgs[5][2] = { {4, 0}, {2, 0}, {1, 0},
@@ -156,6 +172,188 @@ static int tmp007_write_raw(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
+static irqreturn_t tmp007_interrupt_handler(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct tmp007_data *data = iio_priv(indio_dev);
+	int ret;
+
+	ret = i2c_smbus_read_word_swapped(data->client, TMP007_STATUS);
+	if ((ret < 0) || !(ret & (TMP007_STATUS_OHF | TMP007_STATUS_OLF |
+				TMP007_STATUS_LHF | TMP007_STATUS_LLF)))
+		return IRQ_NONE;
+
+	if (ret & TMP007_STATUS_OHF)
+		iio_push_event(indio_dev,
+				IIO_MOD_EVENT_CODE(IIO_TEMP, 0,
+					IIO_MOD_TEMP_OBJECT,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_RISING),
+				iio_get_time_ns(indio_dev));
+
+	if (ret & TMP007_STATUS_OLF)
+		iio_push_event(indio_dev,
+				IIO_MOD_EVENT_CODE(IIO_TEMP, 0,
+					IIO_MOD_TEMP_OBJECT,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_FALLING),
+				iio_get_time_ns(indio_dev));
+
+	if (ret & TMP007_STATUS_LHF)
+		iio_push_event(indio_dev,
+				IIO_MOD_EVENT_CODE(IIO_TEMP, 0,
+					IIO_MOD_TEMP_AMBIENT,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_RISING),
+				iio_get_time_ns(indio_dev));
+
+	if (ret & TMP007_STATUS_LLF)
+		iio_push_event(indio_dev,
+				IIO_MOD_EVENT_CODE(IIO_TEMP, 0,
+					IIO_MOD_TEMP_AMBIENT,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_FALLING),
+				iio_get_time_ns(indio_dev));
+
+	return IRQ_HANDLED;
+}
+
+static int tmp007_write_event_config(struct iio_dev *indio_dev,
+		const struct iio_chan_spec *chan, enum iio_event_type type,
+		enum iio_event_direction dir, int state)
+{
+	struct tmp007_data *data = iio_priv(indio_dev);
+	unsigned int status_mask;
+	int ret;
+
+	switch (chan->channel2) {
+	case IIO_MOD_TEMP_AMBIENT:
+	if (dir == IIO_EV_DIR_RISING)
+			status_mask = TMP007_STATUS_LHF;
+		else
+			status_mask = TMP007_STATUS_LLF;
+		break;
+	case IIO_MOD_TEMP_OBJECT:
+		if (dir == IIO_EV_DIR_RISING)
+			status_mask = TMP007_STATUS_OHF;
+		else
+			status_mask = TMP007_STATUS_OLF;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mutex_lock(&data->lock);
+	ret = i2c_smbus_read_word_swapped(data->client, TMP007_STATUS_MASK);
+	mutex_unlock(&data->lock);
+	if (ret < 0)
+		return ret;
+
+	if (state)
+		ret |= status_mask;
+	else
+		ret &= ~status_mask;
+
+	return i2c_smbus_write_word_swapped(data->client, TMP007_STATUS_MASK,
+					data->status_mask = ret);
+}
+
+static int tmp007_read_event_config(struct iio_dev *indio_dev,
+		const struct iio_chan_spec *chan, enum iio_event_type type,
+		enum iio_event_direction dir)
+{
+	struct tmp007_data *data = iio_priv(indio_dev);
+	unsigned int mask;
+
+	switch (chan->channel2) {
+	case IIO_MOD_TEMP_AMBIENT:
+		if (dir == IIO_EV_DIR_RISING)
+			mask = TMP007_STATUS_LHF;
+		else
+			mask = TMP007_STATUS_LLF;
+		break;
+	case IIO_MOD_TEMP_OBJECT:
+		if (dir == IIO_EV_DIR_RISING)
+			mask = TMP007_STATUS_OHF;
+		else
+			mask = TMP007_STATUS_OLF;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return !!(data->status_mask & mask);
+}
+
+static int tmp007_read_thresh(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,
+		int *val, int *val2)
+{
+	struct tmp007_data *data = iio_priv(indio_dev);
+	int ret;
+	u8 reg;
+
+	switch (chan->channel2) {
+	case IIO_MOD_TEMP_AMBIENT: /* LSB: 0.5 degree Celsius */
+		if (dir == IIO_EV_DIR_RISING)
+			reg = TMP007_TDIE_HIGH_LIMIT;
+		else
+			reg = TMP007_TDIE_LOW_LIMIT;
+		break;
+	case IIO_MOD_TEMP_OBJECT:
+		if (dir == IIO_EV_DIR_RISING)
+			reg = TMP007_TOBJ_HIGH_LIMIT;
+	else
+			reg = TMP007_TOBJ_LOW_LIMIT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = i2c_smbus_read_word_swapped(data->client, reg);
+	if (ret < 0)
+		return ret;
+
+	/* Shift length 7 bits = 6(15:6) + 1(0.5 LSB) */
+	*val = sign_extend32(ret, 15) >> 7;
+
+	return IIO_VAL_INT;
+}
+
+static int tmp007_write_thresh(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,
+		int val, int val2)
+{
+	struct tmp007_data *data = iio_priv(indio_dev);
+	u8 reg;
+
+	switch (chan->channel2) {
+	case IIO_MOD_TEMP_AMBIENT:
+		if (dir == IIO_EV_DIR_RISING)
+			reg = TMP007_TDIE_HIGH_LIMIT;
+		else
+			reg = TMP007_TDIE_LOW_LIMIT;
+		break;
+	case IIO_MOD_TEMP_OBJECT:
+		if (dir == IIO_EV_DIR_RISING)
+			reg = TMP007_TOBJ_HIGH_LIMIT;
+		else
+			reg = TMP007_TOBJ_LOW_LIMIT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* Full scale threshold value is +/- 256 degree Celsius */
+	if (val < -256 || val > 255)
+		return -EINVAL;
+
+	/* Shift length 7 bits = 6(15:6) + 1(0.5 LSB) */
+	return i2c_smbus_write_word_swapped(data->client, reg, (val << 7));
+}
+
 static IIO_CONST_ATTR(sampling_frequency_available, "4 2 1 0.5 0.25");
 
 static struct attribute *tmp007_attributes[] = {
@@ -167,6 +365,36 @@ static const struct attribute_group tmp007_attribute_group = {
 	.attrs = tmp007_attributes,
 };
 
+static const struct iio_event_spec tmp007_obj_event[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_event_spec tmp007_die_event[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
 static const struct iio_chan_spec tmp007_channels[] = {
 	{
 		.type = IIO_TEMP,
@@ -175,6 +403,8 @@ static const struct iio_chan_spec tmp007_channels[] = {
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
 				BIT(IIO_CHAN_INFO_SCALE),
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.event_spec = tmp007_die_event,
+		.num_event_specs = ARRAY_SIZE(tmp007_die_event),
 	},
 	{
 		.type = IIO_TEMP,
@@ -183,12 +413,18 @@ static const struct iio_chan_spec tmp007_channels[] = {
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
 				BIT(IIO_CHAN_INFO_SCALE),
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.event_spec = tmp007_obj_event,
+		.num_event_specs = ARRAY_SIZE(tmp007_obj_event),
 	}
 };
 
 static const struct iio_info tmp007_info = {
 	.read_raw = tmp007_read_raw,
 	.write_raw = tmp007_write_raw,
+	.read_event_config = tmp007_read_event_config,
+	.write_event_config = tmp007_write_event_config,
+	.read_event_value = tmp007_read_thresh,
+	.write_event_value = tmp007_write_thresh,
 	.attrs = &tmp007_attribute_group,
 	.driver_module = THIS_MODULE,
 };
@@ -214,7 +450,6 @@ static int tmp007_probe(struct i2c_client *client,
 	struct tmp007_data *data;
 	struct iio_dev *indio_dev;
 	int ret;
-	u16  status;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
 		return -EOPNOTSUPP;
@@ -231,6 +466,7 @@ static int tmp007_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
+	mutex_init(&data->lock);
 
 	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = "tmp007";
@@ -243,7 +479,7 @@ static int tmp007_probe(struct i2c_client *client,
 	/*
 	 * Set Configuration register:
 	 * 1. Conversion ON
-	 * 2. Comparator mode
+	 * 2. ALERT enable
 	 * 3. Transient correction enable
 	 */
 
@@ -252,7 +488,7 @@ static int tmp007_probe(struct i2c_client *client,
 		return ret;
 
 	data->config = ret;
-	data->config |= (TMP007_CONFIG_CONV_EN | TMP007_CONFIG_COMP_EN | TMP007_CONFIG_TC_EN);
+	data->config |= (TMP007_CONFIG_CONV_EN | TMP007_CONFIG_ALERT_EN | TMP007_CONFIG_TC_EN);
 
 	ret = i2c_smbus_write_word_swapped(data->client, TMP007_CONFIG,
 					data->config);
@@ -260,22 +496,39 @@ static int tmp007_probe(struct i2c_client *client,
 		return ret;
 
 	/*
+	 * Only the following flags can activate ALERT pin. Data conversion/validity flags
+	 * flags can still be polled for getting temperature data
+	 *
 	 * Set Status Mask register:
-	 * 1. Conversion ready enable
-	 * 2. Data valid enable
+	 * 1. Object temperature high limit enable
+	 * 2. Object temperature low limit enable
+	 * 3. TDIE temperature high limit enable
+	 * 4. TDIE temperature low limit enable
 	 */
 
 	ret = i2c_smbus_read_word_swapped(data->client, TMP007_STATUS_MASK);
 	if (ret < 0)
 		goto error_powerdown;
 
-	status = ret;
-	status |= (TMP007_STATUS_CONV_READY | TMP007_STATUS_DATA_VALID);
+	data->status_mask = ret;
+	data->status_mask |= (TMP007_STATUS_OHF | TMP007_STATUS_OLF
+				| TMP007_STATUS_LHF | TMP007_STATUS_LLF);
 
-	ret = i2c_smbus_write_word_swapped(data->client, TMP007_STATUS_MASK, status);
+	ret = i2c_smbus_write_word_swapped(data->client, TMP007_STATUS_MASK, data->status_mask);
 	if (ret < 0)
 		goto error_powerdown;
 
+	if (client->irq) {
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+				NULL, tmp007_interrupt_handler,
+				IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+				tmp007_id->name, indio_dev);
+		if (ret) {
+			dev_err(&client->dev, "irq request error %d\n", -ret);
+			goto error_powerdown;
+		}
+	}
+
 	return iio_device_register(indio_dev);
 
 error_powerdown: