Merging upstream version 6.8.9.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 1257 insertions, 11 deletions

diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index 45edba797e..143003232d 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -252,6 +252,21 @@ config ISL29125
 	  To compile this driver as a module, choose M here: the module will be
 	  called isl29125.
 
+config ISL76682
+	tristate "Intersil ISL76682 Light Sensor"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say Y here if you want to build a driver for the Intersil ISL76682
+	  Ambient Light Sensor and IR Intensity sensor. This driver provides
+	  the readouts via standard IIO sysfs and device interface. Both ALS
+	  illuminance and IR illuminance are provided raw with separate scale
+	  setting which can be configured via sysfs, the default scale is 1000
+	  lux, other options are 4000/16000/64000 lux.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called isl76682.
+
 config HID_SENSOR_ALS
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
@@ -347,6 +362,17 @@ config SENSORS_LM3533
 	  changes. The ALS-control output values can be set per zone for the
 	  three current output channels.
 
+config LTR390
+	tristate "LTR-390UV-01 ambient light and UV sensor"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  If you say yes here you get support for the Lite-On LTR-390UV-01
+	  ambient light and UV sensor.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called ltr390.
+
 config LTR501
 	tristate "LTR-501ALS-01 light sensor"
 	depends on I2C
@@ -637,6 +663,17 @@ config VEML6070
 	  To compile this driver as a module, choose M here: the
 	  module will be called veml6070.
 
+config VEML6075
+	tristate "VEML6075 UVA and UVB light sensor"
+	select REGMAP_I2C
+	depends on I2C
+	help
+	  Say Y here if you want to build a driver for the Vishay VEML6075 UVA
+	  and UVB light sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called veml6075.
+
 config VL6180
 	tristate "VL6180 ALS, range and proximity sensor"
 	depends on I2C
diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile
index c0db4c4c36..2e5fdb33e0 100644
--- a/drivers/iio/light/Makefile
+++ b/drivers/iio/light/Makefile
@@ -28,8 +28,10 @@ obj-$(CONFIG_IQS621_ALS)	+= iqs621-als.o
 obj-$(CONFIG_SENSORS_ISL29018)	+= isl29018.o
 obj-$(CONFIG_SENSORS_ISL29028)	+= isl29028.o
 obj-$(CONFIG_ISL29125)		+= isl29125.o
+obj-$(CONFIG_ISL76682)		+= isl76682.o
 obj-$(CONFIG_JSA1212)		+= jsa1212.o
 obj-$(CONFIG_SENSORS_LM3533)	+= lm3533-als.o
+obj-$(CONFIG_LTR390)		+= ltr390.o
 obj-$(CONFIG_LTR501)		+= ltr501.o
 obj-$(CONFIG_LTRF216A)		+= ltrf216a.o
 obj-$(CONFIG_LV0104CS)		+= lv0104cs.o
@@ -60,5 +62,6 @@ obj-$(CONFIG_VCNL4000)		+= vcnl4000.o
 obj-$(CONFIG_VCNL4035)		+= vcnl4035.o
 obj-$(CONFIG_VEML6030)		+= veml6030.o
 obj-$(CONFIG_VEML6070)		+= veml6070.o
+obj-$(CONFIG_VEML6075)		+= veml6075.o
 obj-$(CONFIG_VL6180)		+= vl6180.o
 obj-$(CONFIG_ZOPT2201)		+= zopt2201.o
diff --git a/drivers/iio/light/isl76682.c b/drivers/iio/light/isl76682.c
new file mode 100644
index 0000000000..cf6ddee44f
--- /dev/null
+++ b/drivers/iio/light/isl76682.c
@@ -0,0 +1,345 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * IIO driver for the light sensor ISL76682.
+ * ISL76682 is Ambient Light Sensor
+ *
+ * Copyright (c) 2023 Marek Vasut <marex@denx.de>
+ */
+
+#include <linux/array_size.h>
+#include <linux/bits.h>
+#include <linux/cleanup.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+#include <linux/iio/iio.h>
+
+#define ISL76682_REG_COMMAND			0x00
+
+#define ISL76682_COMMAND_EN			BIT(7)
+#define ISL76682_COMMAND_MODE_CONTINUOUS	BIT(6)
+#define ISL76682_COMMAND_LIGHT_IR		BIT(5)
+
+#define ISL76682_COMMAND_RANGE_LUX_1K		0x0
+#define ISL76682_COMMAND_RANGE_LUX_4K		0x1
+#define ISL76682_COMMAND_RANGE_LUX_16K		0x2
+#define ISL76682_COMMAND_RANGE_LUX_64K		0x3
+#define ISL76682_COMMAND_RANGE_LUX_MASK		GENMASK(1, 0)
+
+#define ISL76682_REG_ALSIR_L			0x01
+
+#define ISL76682_REG_ALSIR_U			0x02
+
+#define ISL76682_NUM_REGS			(ISL76682_REG_ALSIR_U + 1)
+
+#define ISL76682_CONV_TIME_MS			100
+#define ISL76682_INT_TIME_US			90000
+
+#define ISL76682_ADC_MAX			(BIT(16) - 1)
+
+struct isl76682_chip {
+	/*
+	 * Lock to synchronize access to device command register
+	 * and the content of range variable below.
+	 */
+	struct mutex			lock;
+	struct regmap			*regmap;
+	u8				range;
+	u8				command;
+};
+
+struct isl76682_range {
+	u8				range;
+	u32				als;
+	u32				ir;
+};
+
+static struct isl76682_range isl76682_range_table[] = {
+	{ ISL76682_COMMAND_RANGE_LUX_1K, 15000, 10500 },
+	{ ISL76682_COMMAND_RANGE_LUX_4K, 60000, 42000 },
+	{ ISL76682_COMMAND_RANGE_LUX_16K, 240000, 168000 },
+	{ ISL76682_COMMAND_RANGE_LUX_64K, 960000, 673000 }
+};
+
+static int isl76682_get(struct isl76682_chip *chip, bool mode_ir, int *data)
+{
+	u8 command;
+	int ret;
+
+	command = ISL76682_COMMAND_EN | ISL76682_COMMAND_MODE_CONTINUOUS |
+		  chip->range;
+
+	if (mode_ir)
+		command |= ISL76682_COMMAND_LIGHT_IR;
+
+	if (command != chip->command) {
+		ret = regmap_write(chip->regmap, ISL76682_REG_COMMAND, command);
+		if (ret)
+			return ret;
+
+		/* Need to wait for conversion time if ALS/IR mode enabled */
+		msleep(ISL76682_CONV_TIME_MS);
+
+		chip->command = command;
+	}
+
+	ret = regmap_bulk_read(chip->regmap, ISL76682_REG_ALSIR_L, data, 2);
+	*data &= ISL76682_ADC_MAX;
+	return ret;
+}
+
+static int isl76682_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long mask)
+{
+	struct isl76682_chip *chip = iio_priv(indio_dev);
+	int i;
+
+	if (mask != IIO_CHAN_INFO_SCALE)
+		return -EINVAL;
+
+	if (val != 0)
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(isl76682_range_table); i++) {
+		if (chan->type == IIO_LIGHT && val2 != isl76682_range_table[i].als)
+			continue;
+		if (chan->type == IIO_INTENSITY && val2 != isl76682_range_table[i].ir)
+			continue;
+
+		scoped_guard(mutex, &chip->lock)
+			chip->range = isl76682_range_table[i].range;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int isl76682_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct isl76682_chip *chip = iio_priv(indio_dev);
+	int ret;
+	int i;
+
+	guard(mutex)(&chip->lock);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_LIGHT:
+			ret = isl76682_get(chip, false, val);
+			return (ret < 0) ? ret : IIO_VAL_INT;
+		case IIO_INTENSITY:
+			ret = isl76682_get(chip, true, val);
+			return (ret < 0) ? ret : IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_SCALE:
+		for (i = 0; i < ARRAY_SIZE(isl76682_range_table); i++) {
+			if (chip->range != isl76682_range_table[i].range)
+				continue;
+
+			*val = 0;
+			switch (chan->type) {
+			case IIO_LIGHT:
+				*val2 = isl76682_range_table[i].als;
+				return IIO_VAL_INT_PLUS_MICRO;
+			case IIO_INTENSITY:
+				*val2 = isl76682_range_table[i].ir;
+				return IIO_VAL_INT_PLUS_MICRO;
+			default:
+				return -EINVAL;
+			}
+		}
+		return -EINVAL;
+	case IIO_CHAN_INFO_INT_TIME:
+		*val = 0;
+		*val2 = ISL76682_INT_TIME_US;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int illuminance_scale_available[] = {
+	0, 15000,
+	0, 60000,
+	0, 240000,
+	0, 960000,
+};
+
+static int intensity_scale_available[] = {
+	0, 10500,
+	0, 42000,
+	0, 168000,
+	0, 673000,
+};
+
+static int isl76682_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type,
+			       int *length, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_LIGHT:
+			*vals = illuminance_scale_available;
+			*length = ARRAY_SIZE(illuminance_scale_available);
+			*type = IIO_VAL_INT_PLUS_MICRO;
+			return IIO_AVAIL_LIST;
+		case IIO_INTENSITY:
+			*vals = intensity_scale_available;
+			*length = ARRAY_SIZE(intensity_scale_available);
+			*type = IIO_VAL_INT_PLUS_MICRO;
+			return IIO_AVAIL_LIST;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_chan_spec isl76682_channels[] = {
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME),
+	}, {
+		.type = IIO_INTENSITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME),
+	}
+};
+
+static const struct iio_info isl76682_info = {
+	.read_avail	= isl76682_read_avail,
+	.read_raw	= isl76682_read_raw,
+	.write_raw	= isl76682_write_raw,
+};
+
+static int isl76682_clear_configure_reg(struct isl76682_chip *chip)
+{
+	struct device *dev = regmap_get_device(chip->regmap);
+	int ret;
+
+	ret = regmap_write(chip->regmap, ISL76682_REG_COMMAND, 0x0);
+	if (ret < 0)
+		dev_err(dev, "Error %d clearing the CONFIGURE register\n", ret);
+
+	/*
+	 * In the success case, the command register was zeroed out.
+	 *
+	 * In the error case, we do not know in which state the command
+	 * register is, so we assume it is zeroed out, so that it would
+	 * be reprogrammed at the next data read out, and at that time
+	 * we hope it would be reprogrammed successfully. That is very
+	 * much a best effort approach.
+	 */
+	chip->command = 0;
+
+	return ret;
+}
+
+static void isl76682_reset_action(void *chip)
+{
+	isl76682_clear_configure_reg(chip);
+}
+
+static bool isl76682_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case ISL76682_REG_ALSIR_L:
+	case ISL76682_REG_ALSIR_U:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config isl76682_regmap_config = {
+	.reg_bits		= 8,
+	.val_bits		= 8,
+	.volatile_reg		= isl76682_is_volatile_reg,
+	.max_register		= ISL76682_NUM_REGS - 1,
+	.num_reg_defaults_raw	= ISL76682_NUM_REGS,
+	.cache_type		= REGCACHE_FLAT,
+};
+
+static int isl76682_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct isl76682_chip *chip;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	chip = iio_priv(indio_dev);
+
+	mutex_init(&chip->lock);
+
+	chip->regmap = devm_regmap_init_i2c(client, &isl76682_regmap_config);
+	ret = PTR_ERR_OR_ZERO(chip->regmap);
+	if (ret)
+		return dev_err_probe(dev, ret, "Error initializing regmap\n");
+
+	chip->range = ISL76682_COMMAND_RANGE_LUX_1K;
+
+	ret = isl76682_clear_configure_reg(chip);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, isl76682_reset_action, chip);
+	if (ret)
+		return ret;
+
+	indio_dev->info = &isl76682_info;
+	indio_dev->channels = isl76682_channels;
+	indio_dev->num_channels = ARRAY_SIZE(isl76682_channels);
+	indio_dev->name = "isl76682";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct i2c_device_id isl76682_id[] = {
+	{ "isl76682" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, isl76682_id);
+
+static const struct of_device_id isl76682_of_match[] = {
+	{ .compatible = "isil,isl76682" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, isl76682_of_match);
+
+static struct i2c_driver isl76682_driver = {
+	.driver  = {
+		.name		= "isl76682",
+		.of_match_table	= isl76682_of_match,
+	},
+	.probe		= isl76682_probe,
+	.id_table	= isl76682_id,
+};
+module_i2c_driver(isl76682_driver);
+
+MODULE_DESCRIPTION("ISL76682 Ambient Light Sensor driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
diff --git a/drivers/iio/light/ltr390.c b/drivers/iio/light/ltr390.c
new file mode 100644
index 0000000000..fff1e89909
--- /dev/null
+++ b/drivers/iio/light/ltr390.c
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * IIO driver for Lite-On LTR390 ALS and UV sensor
+ * (7-bit I2C slave address 0x53)
+ *
+ * Based on the work of:
+ *   Shreeya Patel and Shi Zhigang (LTRF216 Driver)
+ *
+ * Copyright (C) 2023 Anshul Dalal <anshulusr@gmail.com>
+ *
+ * Datasheet:
+ *   https://optoelectronics.liteon.com/upload/download/DS86-2015-0004/LTR-390UV_Final_%20DS_V1%201.pdf
+ *
+ * TODO:
+ *   - Support for configurable gain and resolution
+ *   - Sensor suspend/resume support
+ *   - Add support for reading the ALS
+ *   - Interrupt support
+ */
+
+#include <linux/i2c.h>
+#include <linux/math.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+
+#include <asm/unaligned.h>
+
+#define LTR390_MAIN_CTRL      0x00
+#define LTR390_PART_ID	      0x06
+#define LTR390_UVS_DATA	      0x10
+
+#define LTR390_SW_RESET	      BIT(4)
+#define LTR390_UVS_MODE	      BIT(3)
+#define LTR390_SENSOR_ENABLE  BIT(1)
+
+#define LTR390_PART_NUMBER_ID 0xb
+
+/*
+ * At 20-bit resolution (integration time: 400ms) and 18x gain, 2300 counts of
+ * the sensor are equal to 1 UV Index [Datasheet Page#8].
+ *
+ * For the default resolution of 18-bit (integration time: 100ms) and default
+ * gain of 3x, the counts/uvi are calculated as follows:
+ * 2300 / ((3/18) * (100/400)) = 95.83
+ */
+#define LTR390_COUNTS_PER_UVI 96
+
+/*
+ * Window Factor is needed when the device is under Window glass with coated
+ * tinted ink. This is to compensate for the light loss due to the lower
+ * transmission rate of the window glass and helps * in calculating lux.
+ */
+#define LTR390_WINDOW_FACTOR 1
+
+struct ltr390_data {
+	struct regmap *regmap;
+	struct i2c_client *client;
+	/* Protects device from simulataneous reads */
+	struct mutex lock;
+};
+
+static const struct regmap_config ltr390_regmap_config = {
+	.name = "ltr390",
+	.reg_bits = 8,
+	.reg_stride = 1,
+	.val_bits = 8,
+};
+
+static int ltr390_register_read(struct ltr390_data *data, u8 register_address)
+{
+	struct device *dev = &data->client->dev;
+	int ret;
+	u8 recieve_buffer[3];
+
+	guard(mutex)(&data->lock);
+
+	ret = regmap_bulk_read(data->regmap, register_address, recieve_buffer,
+			       sizeof(recieve_buffer));
+	if (ret) {
+		dev_err(dev, "failed to read measurement data");
+		return ret;
+	}
+
+	return get_unaligned_le24(recieve_buffer);
+}
+
+static int ltr390_read_raw(struct iio_dev *iio_device,
+			   struct iio_chan_spec const *chan, int *val,
+			   int *val2, long mask)
+{
+	int ret;
+	struct ltr390_data *data = iio_priv(iio_device);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ltr390_register_read(data, LTR390_UVS_DATA);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = LTR390_WINDOW_FACTOR;
+		*val2 = LTR390_COUNTS_PER_UVI;
+		return IIO_VAL_FRACTIONAL;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ltr390_info = {
+	.read_raw = ltr390_read_raw,
+};
+
+static const struct iio_chan_spec ltr390_channel = {
+	.type = IIO_UVINDEX,
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE)
+};
+
+static int ltr390_probe(struct i2c_client *client)
+{
+	struct ltr390_data *data;
+	struct iio_dev *indio_dev;
+	struct device *dev;
+	int ret, part_number;
+
+	dev = &client->dev;
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+
+	data->regmap = devm_regmap_init_i2c(client, &ltr390_regmap_config);
+	if (IS_ERR(data->regmap))
+		return dev_err_probe(dev, PTR_ERR(data->regmap),
+				     "regmap initialization failed\n");
+
+	data->client = client;
+	mutex_init(&data->lock);
+
+	indio_dev->info = &ltr390_info;
+	indio_dev->channels = &ltr390_channel;
+	indio_dev->num_channels = 1;
+	indio_dev->name = "ltr390";
+
+	ret = regmap_read(data->regmap, LTR390_PART_ID, &part_number);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "failed to get sensor's part id\n");
+	/* Lower 4 bits of `part_number` change with hardware revisions */
+	if (part_number >> 4 != LTR390_PART_NUMBER_ID)
+		dev_info(dev, "received invalid product id: 0x%x", part_number);
+	dev_dbg(dev, "LTR390, product id: 0x%x\n", part_number);
+
+	/* reset sensor, chip fails to respond to this, so ignore any errors */
+	regmap_set_bits(data->regmap, LTR390_MAIN_CTRL, LTR390_SW_RESET);
+
+	/* Wait for the registers to reset before proceeding */
+	usleep_range(1000, 2000);
+
+	ret = regmap_set_bits(data->regmap, LTR390_MAIN_CTRL,
+			      LTR390_SENSOR_ENABLE | LTR390_UVS_MODE);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to enable the sensor\n");
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct i2c_device_id ltr390_id[] = {
+	{ "ltr390" },
+	{ /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, ltr390_id);
+
+static const struct of_device_id ltr390_of_table[] = {
+	{ .compatible = "liteon,ltr390" },
+	{ /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ltr390_of_table);
+
+static struct i2c_driver ltr390_driver = {
+	.driver = {
+		.name = "ltr390",
+		.of_match_table = ltr390_of_table,
+	},
+	.probe = ltr390_probe,
+	.id_table = ltr390_id,
+};
+module_i2c_driver(ltr390_driver);
+
+MODULE_AUTHOR("Anshul Dalal <anshulusr@gmail.com>");
+MODULE_DESCRIPTION("Lite-On LTR390 ALS and UV sensor Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c
index 8de4dd8499..68dc48420a 100644
--- a/drivers/iio/light/ltrf216a.c
+++ b/drivers/iio/light/ltrf216a.c
@@ -234,7 +234,7 @@ static int ltrf216a_read_data(struct ltrf216a_data *data, u8 addr)
 static int ltrf216a_get_lux(struct ltrf216a_data *data)
 {
 	int ret, greendata;
-	u64 lux, div;
+	u64 lux;
 
 	ret = ltrf216a_set_power_state(data, true);
 	if (ret)
@@ -246,10 +246,9 @@ static int ltrf216a_get_lux(struct ltrf216a_data *data)
 
 	ltrf216a_set_power_state(data, false);
 
-	lux = greendata * 45 * LTRF216A_WIN_FAC * 100;
-	div = data->als_gain_fac * data->int_time_fac * 100;
+	lux = greendata * 45 * LTRF216A_WIN_FAC;
 
-	return div_u64(lux, div);
+	return lux;
 }
 
 static int ltrf216a_read_raw(struct iio_dev *indio_dev,
@@ -279,7 +278,8 @@ static int ltrf216a_read_raw(struct iio_dev *indio_dev,
 		if (ret < 0)
 			return ret;
 		*val = ret;
-		return IIO_VAL_INT;
+		*val2 = data->als_gain_fac * data->int_time_fac;
+		return IIO_VAL_FRACTIONAL;
 	case IIO_CHAN_INFO_INT_TIME:
 		mutex_lock(&data->lock);
 		ret = ltrf216a_get_int_time(data, val, val2);
diff --git a/drivers/iio/light/pa12203001.c b/drivers/iio/light/pa12203001.c
index ed241598ae..636432c456 100644
--- a/drivers/iio/light/pa12203001.c
+++ b/drivers/iio/light/pa12203001.c
@@ -472,7 +472,7 @@ static struct i2c_driver pa12203001_driver = {
 	.driver = {
 		.name = PA12203001_DRIVER_NAME,
 		.pm = &pa12203001_pm_ops,
-		.acpi_match_table = ACPI_PTR(pa12203001_acpi_match),
+		.acpi_match_table = pa12203001_acpi_match,
 	},
 	.probe = pa12203001_probe,
 	.remove = pa12203001_remove,
diff --git a/drivers/iio/light/rohm-bu27008.c b/drivers/iio/light/rohm-bu27008.c
index 6a6d778050..0f010eff19 100644
--- a/drivers/iio/light/rohm-bu27008.c
+++ b/drivers/iio/light/rohm-bu27008.c
@@ -130,6 +130,7 @@
  * @BU27008_BLUE:	Blue channel. Via data2 (when used).
  * @BU27008_CLEAR:	Clear channel. Via data2 or data3 (when used).
  * @BU27008_IR:		IR channel. Via data3 (when used).
+ * @BU27008_LUX:	Illuminance channel, computed using RGB and IR.
  * @BU27008_NUM_CHANS:	Number of channel types.
  */
 enum bu27008_chan_type {
@@ -138,6 +139,7 @@ enum bu27008_chan_type {
 	BU27008_BLUE,
 	BU27008_CLEAR,
 	BU27008_IR,
+	BU27008_LUX,
 	BU27008_NUM_CHANS
 };
 
@@ -172,6 +174,8 @@ static const unsigned long bu27008_scan_masks[] = {
 	ALWAYS_SCANNABLE | BIT(BU27008_CLEAR) | BIT(BU27008_IR),
 	/* buffer is R, G, B, IR */
 	ALWAYS_SCANNABLE | BIT(BU27008_BLUE) | BIT(BU27008_IR),
+	/* buffer is R, G, B, IR, LUX */
+	ALWAYS_SCANNABLE | BIT(BU27008_BLUE) | BIT(BU27008_IR) | BIT(BU27008_LUX),
 	0
 };
 
@@ -331,6 +335,19 @@ static const struct iio_chan_spec bu27008_channels[] = {
 	 * Hence we don't advertise available ones either.
 	 */
 	BU27008_CHAN(IR, DATA3, 0),
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.channel = BU27008_LUX,
+		.scan_index = BU27008_LUX,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 64,
+			.storagebits = 64,
+			.endianness = IIO_CPU,
+		},
+	},
 	IIO_CHAN_SOFT_TIMESTAMP(BU27008_NUM_CHANS),
 };
 
@@ -1004,6 +1021,169 @@ static int bu27008_read_one(struct bu27008_data *data, struct iio_dev *idev,
 	return ret;
 }
 
+#define BU27008_LUX_DATA_RED	0
+#define BU27008_LUX_DATA_GREEN	1
+#define BU27008_LUX_DATA_BLUE	2
+#define BU27008_LUX_DATA_IR	3
+#define LUX_DATA_SIZE (BU27008_NUM_HW_CHANS * sizeof(__le16))
+
+static int bu27008_read_lux_chans(struct bu27008_data *data, unsigned int time,
+				  __le16 *chan_data)
+{
+	int ret, chan_sel, tmpret, valid;
+
+	chan_sel = BU27008_BLUE2_IR3 << (ffs(data->cd->chan_sel_mask) - 1);
+
+	ret = regmap_update_bits(data->regmap, data->cd->chan_sel_reg,
+				 data->cd->chan_sel_mask, chan_sel);
+	if (ret)
+		return ret;
+
+	ret = bu27008_meas_set(data, true);
+	if (ret)
+		return ret;
+
+	msleep(time / USEC_PER_MSEC);
+
+	ret = regmap_read_poll_timeout(data->regmap, data->cd->valid_reg,
+				       valid, (valid & BU27008_MASK_VALID),
+				       BU27008_VALID_RESULT_WAIT_QUANTA_US,
+				       BU27008_MAX_VALID_RESULT_WAIT_US);
+	if (ret)
+		goto out;
+
+	ret = regmap_bulk_read(data->regmap, BU27008_REG_DATA0_LO, chan_data,
+			       LUX_DATA_SIZE);
+	if (ret)
+		goto out;
+out:
+	tmpret = bu27008_meas_set(data, false);
+	if (tmpret)
+		dev_warn(data->dev, "Stopping measurement failed\n");
+
+	return ret;
+}
+
+/*
+ * Following equation for computing lux out of register values was given by
+ * ROHM HW colleagues;
+ *
+ * Red = RedData*1024 / Gain * 20 / meas_mode
+ * Green = GreenData* 1024 / Gain * 20 / meas_mode
+ * Blue = BlueData* 1024 / Gain * 20 / meas_mode
+ * IR = IrData* 1024 / Gain * 20 / meas_mode
+ *
+ * where meas_mode is the integration time in mS / 10
+ *
+ * IRratio = (IR > 0.18 * Green) ? 0 : 1
+ *
+ * Lx = max(c1*Red + c2*Green + c3*Blue,0)
+ *
+ * for
+ * IRratio 0: c1 = -0.00002237, c2 = 0.0003219, c3 = -0.000120371
+ * IRratio 1: c1 = -0.00001074, c2 = 0.000305415, c3 = -0.000129367
+ */
+
+/*
+ * The max chan data is 0xffff. When we multiply it by 1024 * 20, we'll get
+ * 0x4FFFB000 which still fits in 32-bit integer. This won't overflow.
+ */
+#define NORM_CHAN_DATA_FOR_LX_CALC(chan, gain, time) (le16_to_cpu(chan) * \
+				   1024 * 20 / (gain) / (time))
+static u64 bu27008_calc_nlux(struct bu27008_data *data, __le16 *lux_data,
+		unsigned int gain, unsigned int gain_ir, unsigned int time)
+{
+	unsigned int red, green, blue, ir;
+	s64 c1, c2, c3, nlux;
+
+	time /= 10000;
+	ir = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_IR], gain_ir, time);
+	red = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_RED], gain, time);
+	green = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_GREEN], gain, time);
+	blue = NORM_CHAN_DATA_FOR_LX_CALC(lux_data[BU27008_LUX_DATA_BLUE], gain, time);
+
+	if ((u64)ir * 100LLU > (u64)green * 18LLU) {
+		c1 = -22370;
+		c2 = 321900;
+		c3 = -120371;
+	} else {
+		c1 = -10740;
+		c2 = 305415;
+		c3 = -129367;
+	}
+	nlux = c1 * red + c2 * green + c3 * blue;
+
+	return max_t(s64, 0, nlux);
+}
+
+static int bu27008_get_time_n_gains(struct bu27008_data *data,
+		unsigned int *gain, unsigned int *gain_ir, unsigned int *time)
+{
+	int ret;
+
+	ret = bu27008_get_gain(data, &data->gts, gain);
+	if (ret < 0)
+		return ret;
+
+	ret = bu27008_get_gain(data, &data->gts_ir, gain_ir);
+	if (ret < 0)
+		return ret;
+
+	ret = bu27008_get_int_time_us(data);
+	if (ret < 0)
+		return ret;
+
+	/* Max integration time is 400000. Fits in signed int. */
+	*time = ret;
+
+	return 0;
+}
+
+struct bu27008_buf {
+	__le16 chan[BU27008_NUM_HW_CHANS];
+	u64 lux __aligned(8);
+	s64 ts __aligned(8);
+};
+
+static int bu27008_buffer_fill_lux(struct bu27008_data *data,
+				   struct bu27008_buf *raw)
+{
+	unsigned int gain, gain_ir, time;
+	int ret;
+
+	ret = bu27008_get_time_n_gains(data, &gain, &gain_ir, &time);
+	if (ret)
+		return ret;
+
+	raw->lux = bu27008_calc_nlux(data, raw->chan, gain, gain_ir, time);
+
+	return 0;
+}
+
+static int bu27008_read_lux(struct bu27008_data *data, struct iio_dev *idev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2)
+{
+	__le16 lux_data[BU27008_NUM_HW_CHANS];
+	unsigned int gain, gain_ir, time;
+	u64 nlux;
+	int ret;
+
+	ret = bu27008_get_time_n_gains(data, &gain, &gain_ir, &time);
+	if (ret)
+		return ret;
+
+	ret = bu27008_read_lux_chans(data, time, lux_data);
+	if (ret)
+		return ret;
+
+	nlux = bu27008_calc_nlux(data, lux_data, gain, gain_ir, time);
+	*val = (int)nlux;
+	*val2 = nlux >> 32LLU;
+
+	return IIO_VAL_INT_64;
+}
+
 static int bu27008_read_raw(struct iio_dev *idev,
 			   struct iio_chan_spec const *chan,
 			   int *val, int *val2, long mask)
@@ -1018,7 +1198,10 @@ static int bu27008_read_raw(struct iio_dev *idev,
 			return -EBUSY;
 
 		mutex_lock(&data->mutex);
-		ret = bu27008_read_one(data, idev, chan, val, val2);
+		if (chan->type == IIO_LIGHT)
+			ret = bu27008_read_lux(data, idev, chan, val, val2);
+		else
+			ret = bu27008_read_one(data, idev, chan, val, val2);
 		mutex_unlock(&data->mutex);
 
 		iio_device_release_direct_mode(idev);
@@ -1026,6 +1209,11 @@ static int bu27008_read_raw(struct iio_dev *idev,
 		return ret;
 
 	case IIO_CHAN_INFO_SCALE:
+		if (chan->type == IIO_LIGHT) {
+			*val = 0;
+			*val2 = 1;
+			return IIO_VAL_INT_PLUS_NANO;
+		}
 		ret = bu27008_get_scale(data, chan->scan_index == BU27008_IR,
 					val, val2);
 		if (ret)
@@ -1236,10 +1424,7 @@ static irqreturn_t bu27008_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *idev = pf->indio_dev;
 	struct bu27008_data *data = iio_priv(idev);
-	struct {
-		__le16 chan[BU27008_NUM_HW_CHANS];
-		s64 ts __aligned(8);
-	} raw;
+	struct bu27008_buf raw;
 	int ret, dummy;
 
 	memset(&raw, 0, sizeof(raw));
@@ -1257,6 +1442,12 @@ static irqreturn_t bu27008_trigger_handler(int irq, void *p)
 	if (ret < 0)
 		goto err_read;
 
+	if (test_bit(BU27008_LUX, idev->active_scan_mask)) {
+		ret = bu27008_buffer_fill_lux(data, &raw);
+		if (ret)
+			goto err_read;
+	}
+
 	iio_push_to_buffers_with_timestamp(idev, &raw, pf->timestamp);
 err_read:
 	iio_trigger_notify_done(idev->trig);
diff --git a/drivers/iio/light/veml6075.c b/drivers/iio/light/veml6075.c
new file mode 100644
index 0000000000..05d4c0e901
--- /dev/null
+++ b/drivers/iio/light/veml6075.c
@@ -0,0 +1,474 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Vishay VEML6075 UVA and UVB light sensor
+ *
+ * Copyright 2023 Javier Carrasco <javier.carrasco.cruz@gmail.com>
+ *
+ * 7-bit I2C slave, address 0x10
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/units.h>
+
+#include <linux/iio/iio.h>
+
+#define VEML6075_CMD_CONF	0x00 /* configuration register */
+#define VEML6075_CMD_UVA	0x07 /* UVA channel */
+#define VEML6075_CMD_UVB	0x09 /* UVB channel */
+#define VEML6075_CMD_COMP1	0x0A /* visible light compensation */
+#define VEML6075_CMD_COMP2	0x0B /* infrarred light compensation */
+#define VEML6075_CMD_ID		0x0C /* device ID */
+
+#define VEML6075_CONF_IT	GENMASK(6, 4) /* intregration time */
+#define VEML6075_CONF_HD	BIT(3) /* dynamic setting */
+#define VEML6075_CONF_TRIG	BIT(2) /* trigger */
+#define VEML6075_CONF_AF	BIT(1) /* active force enable */
+#define VEML6075_CONF_SD	BIT(0) /* shutdown */
+
+#define VEML6075_IT_50_MS	0x00
+#define VEML6075_IT_100_MS	0x01
+#define VEML6075_IT_200_MS	0x02
+#define VEML6075_IT_400_MS	0x03
+#define VEML6075_IT_800_MS	0x04
+
+#define VEML6075_AF_DISABLE	0x00
+#define VEML6075_AF_ENABLE	0x01
+
+#define VEML6075_SD_DISABLE	0x00
+#define VEML6075_SD_ENABLE	0x01
+
+/* Open-air coefficients and responsivity */
+#define VEML6075_A_COEF		2220
+#define VEML6075_B_COEF		1330
+#define VEML6075_C_COEF		2950
+#define VEML6075_D_COEF		1740
+#define VEML6075_UVA_RESP	1461
+#define VEML6075_UVB_RESP	2591
+
+static const int veml6075_it_ms[] = { 50, 100, 200, 400, 800 };
+
+struct veml6075_data {
+	struct i2c_client *client;
+	struct regmap *regmap;
+	/*
+	 * prevent integration time modification and triggering
+	 * measurements while a measurement is underway.
+	 */
+	struct mutex lock;
+};
+
+/* channel number */
+enum veml6075_chan {
+	CH_UVA,
+	CH_UVB,
+};
+
+static const struct iio_chan_spec veml6075_channels[] = {
+	{
+		.type = IIO_INTENSITY,
+		.channel = CH_UVA,
+		.modified = 1,
+		.channel2 = IIO_MOD_LIGHT_UVA,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME),
+	},
+	{
+		.type = IIO_INTENSITY,
+		.channel = CH_UVB,
+		.modified = 1,
+		.channel2 = IIO_MOD_LIGHT_UVB,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME),
+	},
+	{
+		.type = IIO_UVINDEX,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME),
+	},
+};
+
+static int veml6075_request_measurement(struct veml6075_data *data)
+{
+	int ret, conf, int_time;
+
+	ret = regmap_read(data->regmap, VEML6075_CMD_CONF, &conf);
+	if (ret < 0)
+		return ret;
+
+	/* disable shutdown and trigger measurement */
+	ret = regmap_write(data->regmap, VEML6075_CMD_CONF,
+			   (conf | VEML6075_CONF_TRIG) & ~VEML6075_CONF_SD);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * A measurement requires between 1.30 and 1.40 times the integration
+	 * time for all possible configurations. Using a 1.50 factor simplifies
+	 * operations and ensures reliability under all circumstances.
+	 */
+	int_time = veml6075_it_ms[FIELD_GET(VEML6075_CONF_IT, conf)];
+	msleep(int_time + (int_time / 2));
+
+	/* shutdown again, data registers are still accessible */
+	return regmap_update_bits(data->regmap, VEML6075_CMD_CONF,
+				  VEML6075_CONF_SD, VEML6075_CONF_SD);
+}
+
+static int veml6075_uva_comp(int raw_uva, int comp1, int comp2)
+{
+	int comp1a_c, comp2a_c, uva_comp;
+
+	comp1a_c = (comp1 * VEML6075_A_COEF) / 1000U;
+	comp2a_c = (comp2 * VEML6075_B_COEF) / 1000U;
+	uva_comp = raw_uva - comp1a_c - comp2a_c;
+
+	return clamp_val(uva_comp, 0, U16_MAX);
+}
+
+static int veml6075_uvb_comp(int raw_uvb, int comp1, int comp2)
+{
+	int comp1b_c, comp2b_c, uvb_comp;
+
+	comp1b_c = (comp1 * VEML6075_C_COEF) / 1000U;
+	comp2b_c = (comp2 * VEML6075_D_COEF) / 1000U;
+	uvb_comp = raw_uvb - comp1b_c - comp2b_c;
+
+	return clamp_val(uvb_comp, 0, U16_MAX);
+}
+
+static int veml6075_read_comp(struct veml6075_data *data, int *c1, int *c2)
+{
+	int ret;
+
+	ret = regmap_read(data->regmap, VEML6075_CMD_COMP1, c1);
+	if (ret < 0)
+		return ret;
+
+	return regmap_read(data->regmap, VEML6075_CMD_COMP2, c2);
+}
+
+static int veml6075_read_uv_direct(struct veml6075_data *data, int chan,
+				   int *val)
+{
+	int c1, c2, ret;
+
+	guard(mutex)(&data->lock);
+
+	ret = veml6075_request_measurement(data);
+	if (ret < 0)
+		return ret;
+
+	ret = veml6075_read_comp(data, &c1, &c2);
+	if (ret < 0)
+		return ret;
+
+	switch (chan) {
+	case CH_UVA:
+		ret = regmap_read(data->regmap, VEML6075_CMD_UVA, val);
+		if (ret < 0)
+			return ret;
+
+		*val = veml6075_uva_comp(*val, c1, c2);
+		return IIO_VAL_INT;
+	case CH_UVB:
+		ret = regmap_read(data->regmap, VEML6075_CMD_UVB, val);
+		if (ret < 0)
+			return ret;
+
+		*val = veml6075_uvb_comp(*val, c1, c2);
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int veml6075_read_int_time_index(struct veml6075_data *data)
+{
+	int ret, conf;
+
+	ret = regmap_read(data->regmap, VEML6075_CMD_CONF, &conf);
+	if (ret < 0)
+		return ret;
+
+	return FIELD_GET(VEML6075_CONF_IT, conf);
+}
+
+static int veml6075_read_int_time_ms(struct veml6075_data *data, int *val)
+{
+	int int_index;
+
+	guard(mutex)(&data->lock);
+	int_index = veml6075_read_int_time_index(data);
+	if (int_index < 0)
+		return int_index;
+
+	*val = veml6075_it_ms[int_index];
+
+	return IIO_VAL_INT;
+}
+
+static int veml6075_get_uvi_micro(struct veml6075_data *data, int uva_comp,
+				  int uvb_comp)
+{
+	int uvia_micro = uva_comp * VEML6075_UVA_RESP;
+	int uvib_micro = uvb_comp * VEML6075_UVB_RESP;
+	int int_index;
+
+	int_index = veml6075_read_int_time_index(data);
+	if (int_index < 0)
+		return int_index;
+
+	switch (int_index) {
+	case VEML6075_IT_50_MS:
+		return uvia_micro + uvib_micro;
+	case VEML6075_IT_100_MS:
+	case VEML6075_IT_200_MS:
+	case VEML6075_IT_400_MS:
+	case VEML6075_IT_800_MS:
+		return (uvia_micro + uvib_micro) / (2 << int_index);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int veml6075_read_uvi(struct veml6075_data *data, int *val, int *val2)
+{
+	int ret, c1, c2, uva, uvb, uvi_micro;
+
+	guard(mutex)(&data->lock);
+
+	ret = veml6075_request_measurement(data);
+	if (ret < 0)
+		return ret;
+
+	ret = veml6075_read_comp(data, &c1, &c2);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_read(data->regmap, VEML6075_CMD_UVA, &uva);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_read(data->regmap, VEML6075_CMD_UVB, &uvb);
+	if (ret < 0)
+		return ret;
+
+	uvi_micro = veml6075_get_uvi_micro(data, veml6075_uva_comp(uva, c1, c2),
+					   veml6075_uvb_comp(uvb, c1, c2));
+	if (uvi_micro < 0)
+		return uvi_micro;
+
+	*val = uvi_micro / MICRO;
+	*val2 = uvi_micro % MICRO;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int veml6075_read_responsivity(int chan, int *val, int *val2)
+{
+	/* scale = 1 / resp */
+	switch (chan) {
+	case CH_UVA:
+		/* resp = 0.93 c/uW/cm2: scale = 1.75268817 */
+		*val = 1;
+		*val2 = 75268817;
+		return IIO_VAL_INT_PLUS_NANO;
+	case CH_UVB:
+		/* resp = 2.1 c/uW/cm2: scale = 0.476190476 */
+		*val = 0;
+		*val2 = 476190476;
+		return IIO_VAL_INT_PLUS_NANO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int veml6075_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		*length = ARRAY_SIZE(veml6075_it_ms);
+		*vals = veml6075_it_ms;
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int veml6075_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct veml6075_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return veml6075_read_uv_direct(data, chan->channel, val);
+	case IIO_CHAN_INFO_PROCESSED:
+		return veml6075_read_uvi(data, val, val2);
+	case IIO_CHAN_INFO_INT_TIME:
+		return veml6075_read_int_time_ms(data, val);
+	case IIO_CHAN_INFO_SCALE:
+		return veml6075_read_responsivity(chan->channel, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int veml6075_write_int_time_ms(struct veml6075_data *data, int val)
+{
+	int i = ARRAY_SIZE(veml6075_it_ms);
+
+	guard(mutex)(&data->lock);
+
+	while (i-- > 0) {
+		if (val == veml6075_it_ms[i])
+			break;
+	}
+	if (i < 0)
+		return -EINVAL;
+
+	return regmap_update_bits(data->regmap, VEML6075_CMD_CONF,
+				  VEML6075_CONF_IT,
+				  FIELD_PREP(VEML6075_CONF_IT, i));
+}
+
+static int veml6075_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long mask)
+{
+	struct veml6075_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		return veml6075_write_int_time_ms(data, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info veml6075_info = {
+	.read_avail = veml6075_read_avail,
+	.read_raw = veml6075_read_raw,
+	.write_raw = veml6075_write_raw,
+};
+
+static bool veml6075_readable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case VEML6075_CMD_CONF:
+	case VEML6075_CMD_UVA:
+	case VEML6075_CMD_UVB:
+	case VEML6075_CMD_COMP1:
+	case VEML6075_CMD_COMP2:
+	case VEML6075_CMD_ID:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool veml6075_writable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case VEML6075_CMD_CONF:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config veml6075_regmap_config = {
+	.name = "veml6075",
+	.reg_bits = 8,
+	.val_bits = 16,
+	.max_register = VEML6075_CMD_ID,
+	.readable_reg = veml6075_readable_reg,
+	.writeable_reg = veml6075_writable_reg,
+	.val_format_endian = REGMAP_ENDIAN_LITTLE,
+};
+
+static int veml6075_probe(struct i2c_client *client)
+{
+	struct veml6075_data *data;
+	struct iio_dev *indio_dev;
+	struct regmap *regmap;
+	int config, ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	regmap = devm_regmap_init_i2c(client, &veml6075_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	data = iio_priv(indio_dev);
+	data->client = client;
+	data->regmap = regmap;
+
+	mutex_init(&data->lock);
+
+	indio_dev->name = "veml6075";
+	indio_dev->info = &veml6075_info;
+	indio_dev->channels = veml6075_channels;
+	indio_dev->num_channels = ARRAY_SIZE(veml6075_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = devm_regulator_get_enable(&client->dev, "vdd");
+	if (ret < 0)
+		return ret;
+
+	/* default: 100ms integration time, active force enable, shutdown */
+	config = FIELD_PREP(VEML6075_CONF_IT, VEML6075_IT_100_MS) |
+		FIELD_PREP(VEML6075_CONF_AF, VEML6075_AF_ENABLE) |
+		FIELD_PREP(VEML6075_CONF_SD, VEML6075_SD_ENABLE);
+	ret = regmap_write(data->regmap, VEML6075_CMD_CONF, config);
+	if (ret < 0)
+		return ret;
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static const struct i2c_device_id veml6075_id[] = {
+	{ "veml6075" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, veml6075_id);
+
+static const struct of_device_id veml6075_of_match[] = {
+	{ .compatible = "vishay,veml6075" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, veml6075_of_match);
+
+static struct i2c_driver veml6075_driver = {
+	.driver = {
+		.name   = "veml6075",
+		.of_match_table = veml6075_of_match,
+	},
+	.probe = veml6075_probe,
+	.id_table = veml6075_id,
+};
+
+module_i2c_driver(veml6075_driver);
+
+MODULE_AUTHOR("Javier Carrasco <javier.carrasco.cruz@gmail.com>");
+MODULE_DESCRIPTION("Vishay VEML6075 UVA and UVB light sensor driver");
+MODULE_LICENSE("GPL");