iio: light: Add support for vishay vcnl4035 (55707294) · Commits · 戴 / test

drivers/iio/light/Kconfig

+13 −0

Original line number	Diff line number	Diff line
		@@ -460,6 +460,19 @@ config VCNL4000
		To compile this driver as a module, choose M here: the
		module will be called vcnl4000.

		config VCNL4035
		tristate "VCNL4035 combined ALS and proximity sensor"
		select IIO_TRIGGERED_BUFFER
		select REGMAP_I2C
		depends on I2C
		help
		Say Y here if you want to build a driver for the Vishay VCNL4035,
		combined ambient light (ALS) and proximity sensor. Currently only ALS
		function is available.

		To compile this driver as a module, choose M here: the
		module will be called vcnl4035.

		config VEML6070
		tristate "VEML6070 UV A light sensor"
		depends on I2C

drivers/iio/light/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -45,6 +45,7 @@ obj-$(CONFIG_TSL2772) += tsl2772.o
		obj-$(CONFIG_TSL4531) += tsl4531.o
		obj-$(CONFIG_US5182D) += us5182d.o
		obj-$(CONFIG_VCNL4000) += vcnl4000.o
		obj-$(CONFIG_VCNL4035) += vcnl4035.o
		obj-$(CONFIG_VEML6070) += veml6070.o
		obj-$(CONFIG_VL6180) += vl6180.o
		obj-$(CONFIG_ZOPT2201) += zopt2201.o

drivers/iio/light/vcnl4035.c

0 → 100644

+676 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0
		/*
		* VCNL4035 Ambient Light and Proximity Sensor - 7-bit I2C slave address 0x60
		*
		* Copyright (c) 2018, DENX Software Engineering GmbH
		* Author: Parthiban Nallathambi <pn@denx.de>
		*
		* TODO: Proximity
		*/
		#include <linux/bitops.h>
		#include <linux/i2c.h>
		#include <linux/module.h>
		#include <linux/pm_runtime.h>
		#include <linux/regmap.h>

		#include <linux/iio/buffer.h>
		#include <linux/iio/events.h>
		#include <linux/iio/iio.h>
		#include <linux/iio/sysfs.h>
		#include <linux/iio/trigger.h>
		#include <linux/iio/trigger_consumer.h>
		#include <linux/iio/triggered_buffer.h>

		#define VCNL4035_DRV_NAME "vcnl4035"
		#define VCNL4035_IRQ_NAME "vcnl4035_event"
		#define VCNL4035_REGMAP_NAME "vcnl4035_regmap"

		/* Device registers */
		#define VCNL4035_ALS_CONF 0x00
		#define VCNL4035_ALS_THDH 0x01
		#define VCNL4035_ALS_THDL 0x02
		#define VCNL4035_ALS_DATA 0x0B
		#define VCNL4035_WHITE_DATA 0x0C
		#define VCNL4035_INT_FLAG 0x0D
		#define VCNL4035_DEV_ID 0x0E

		/* Register masks */
		#define VCNL4035_MODE_ALS_MASK BIT(0)
		#define VCNL4035_MODE_ALS_WHITE_CHAN BIT(8)
		#define VCNL4035_MODE_ALS_INT_MASK BIT(1)
		#define VCNL4035_ALS_IT_MASK GENMASK(7, 5)
		#define VCNL4035_ALS_PERS_MASK GENMASK(3, 2)
		#define VCNL4035_INT_ALS_IF_H_MASK BIT(12)
		#define VCNL4035_INT_ALS_IF_L_MASK BIT(13)

		/* Default values */
		#define VCNL4035_MODE_ALS_ENABLE BIT(0)
		#define VCNL4035_MODE_ALS_DISABLE 0x00
		#define VCNL4035_MODE_ALS_INT_ENABLE BIT(1)
		#define VCNL4035_MODE_ALS_INT_DISABLE 0
		#define VCNL4035_DEV_ID_VAL 0x80
		#define VCNL4035_ALS_IT_DEFAULT 0x01
		#define VCNL4035_ALS_PERS_DEFAULT 0x00
		#define VCNL4035_ALS_THDH_DEFAULT 5000
		#define VCNL4035_ALS_THDL_DEFAULT 100
		#define VCNL4035_SLEEP_DELAY_MS 2000

		struct vcnl4035_data {
		struct i2c_client *client;
		struct regmap *regmap;
		unsigned int als_it_val;
		unsigned int als_persistence;
		unsigned int als_thresh_low;
		unsigned int als_thresh_high;
		struct iio_trigger *drdy_trigger0;
		};

		static inline bool vcnl4035_is_triggered(struct vcnl4035_data *data)
		{
		int ret;
		int reg;

		ret = regmap_read(data->regmap, VCNL4035_INT_FLAG, &reg);
		if (ret < 0)
		return false;

		return !!(reg &
		(VCNL4035_INT_ALS_IF_H_MASK \| VCNL4035_INT_ALS_IF_L_MASK));
		}

		static irqreturn_t vcnl4035_drdy_irq_thread(int irq, void *private)
		{
		struct iio_dev *indio_dev = private;
		struct vcnl4035_data *data = iio_priv(indio_dev);

		if (vcnl4035_is_triggered(data)) {
		iio_push_event(indio_dev, IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
		0,
		IIO_EV_TYPE_THRESH,
		IIO_EV_DIR_EITHER),
		iio_get_time_ns(indio_dev));
		iio_trigger_poll_chained(data->drdy_trigger0);
		return IRQ_HANDLED;
		}

		return IRQ_NONE;
		}

		/* Triggered buffer */
		static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p)
		{
		struct iio_poll_func *pf = p;
		struct iio_dev *indio_dev = pf->indio_dev;
		struct vcnl4035_data *data = iio_priv(indio_dev);
		u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)];
		int ret;

		ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer);
		if (ret < 0) {
		dev_err(&data->client->dev,
		"Trigger consumer can't read from sensor.\n");
		goto fail_read;
		}
		iio_push_to_buffers_with_timestamp(indio_dev, buffer,
		iio_get_time_ns(indio_dev));

		fail_read:
		iio_trigger_notify_done(indio_dev->trig);

		return IRQ_HANDLED;
		}

		static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger,
		bool enable_drdy)
		{
		struct iio_dev *indio_dev = iio_trigger_get_drvdata(trigger);
		struct vcnl4035_data *data = iio_priv(indio_dev);
		int val = enable_drdy ? VCNL4035_MODE_ALS_INT_ENABLE :
		VCNL4035_MODE_ALS_INT_DISABLE;

		return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
		VCNL4035_MODE_ALS_INT_MASK,
		val);
		}

		static const struct iio_trigger_ops vcnl4035_trigger_ops = {
		.validate_device = iio_trigger_validate_own_device,
		.set_trigger_state = vcnl4035_als_drdy_set_state,
		};

		static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on)
		{
		int ret;
		struct device *dev = &data->client->dev;

		if (on) {
		ret = pm_runtime_get_sync(dev);
		if (ret < 0)
		pm_runtime_put_noidle(dev);
		} else {
		pm_runtime_mark_last_busy(dev);
		ret = pm_runtime_put_autosuspend(dev);
		}

		return ret;
		}

		/*
		* Device IT INT Time (ms) Scale (lux/step)
		* 000 50 0.064
		* 001 100 0.032
		* 010 200 0.016
		* 100 400 0.008
		* 101 - 111 800 0.004
		* Values are proportional, so ALS INT is selected for input due to
		* simplicity reason. Integration time value and scaling is
		* calculated based on device INT value
		*
		* Raw value needs to be scaled using ALS steps
		*/
		static int vcnl4035_read_raw(struct iio_dev *indio_dev,
		struct iio_chan_spec const chan, int val,
		int *val2, long mask)
		{
		struct vcnl4035_data *data = iio_priv(indio_dev);
		int ret;
		int raw_data;
		unsigned int reg;

		switch (mask) {
		case IIO_CHAN_INFO_RAW:
		ret = vcnl4035_set_pm_runtime_state(data, true);
		if (ret < 0)
		return ret;

		ret = iio_device_claim_direct_mode(indio_dev);
		if (!ret) {
		if (chan->channel)
		reg = VCNL4035_ALS_DATA;
		else
		reg = VCNL4035_WHITE_DATA;
		ret = regmap_read(data->regmap, reg, &raw_data);
		iio_device_release_direct_mode(indio_dev);
		if (!ret) {
		*val = raw_data;
		ret = IIO_VAL_INT;
		}
		}
		vcnl4035_set_pm_runtime_state(data, false);
		return ret;
		case IIO_CHAN_INFO_INT_TIME:
		*val = 50;
		if (data->als_it_val)
		val = data->als_it_val 100;
		return IIO_VAL_INT;
		case IIO_CHAN_INFO_SCALE:
		*val = 64;
		if (!data->als_it_val)
		*val2 = 1000;
		else
		val2 = data->als_it_val 2 * 1000;
		return IIO_VAL_FRACTIONAL;
		default:
		return -EINVAL;
		}
		}

		static int vcnl4035_write_raw(struct iio_dev *indio_dev,
		struct iio_chan_spec const *chan,
		int val, int val2, long mask)
		{
		int ret;
		struct vcnl4035_data *data = iio_priv(indio_dev);

		switch (mask) {
		case IIO_CHAN_INFO_INT_TIME:
		if (val <= 0 \|\| val > 800)
		return -EINVAL;

		ret = vcnl4035_set_pm_runtime_state(data, true);
		if (ret < 0)
		return ret;

		ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
		VCNL4035_ALS_IT_MASK,
		val / 100);
		if (!ret)
		data->als_it_val = val / 100;

		vcnl4035_set_pm_runtime_state(data, false);
		return ret;
		default:
		return -EINVAL;
		}
		}

		/* No direct ABI for persistence and threshold, so eventing */
		static int vcnl4035_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 vcnl4035_data *data = iio_priv(indio_dev);

		switch (info) {
		case IIO_EV_INFO_VALUE:
		switch (dir) {
		case IIO_EV_DIR_RISING:
		*val = data->als_thresh_high;
		return IIO_VAL_INT;
		case IIO_EV_DIR_FALLING:
		*val = data->als_thresh_low;
		return IIO_VAL_INT;
		default:
		return -EINVAL;
		}
		break;
		case IIO_EV_INFO_PERIOD:
		*val = data->als_persistence;
		return IIO_VAL_INT;
		default:
		return -EINVAL;
		}

		}

		static int vcnl4035_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 vcnl4035_data *data = iio_priv(indio_dev);
		int ret;

		switch (info) {
		case IIO_EV_INFO_VALUE:
		/* 16 bit threshold range 0 - 65535 */
		if (val < 0 \|\| val > 65535)
		return -EINVAL;
		if (dir == IIO_EV_DIR_RISING) {
		if (val < data->als_thresh_low)
		return -EINVAL;
		ret = regmap_write(data->regmap, VCNL4035_ALS_THDH,
		val);
		if (ret)
		return ret;
		data->als_thresh_high = val;
		} else {
		if (val > data->als_thresh_high)
		return -EINVAL;
		ret = regmap_write(data->regmap, VCNL4035_ALS_THDL,
		val);
		if (ret)
		return ret;
		data->als_thresh_low = val;
		}
		return ret;
		case IIO_EV_INFO_PERIOD:
		/* allow only 1 2 4 8 as persistence value */
		if (val < 0 \|\| val > 8 \|\| hweight8(val) != 1)
		return -EINVAL;
		ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
		VCNL4035_ALS_PERS_MASK, val);
		if (!ret)
		data->als_persistence = val;
		return ret;
		default:
		return -EINVAL;
		}
		}

		static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800");

		static struct attribute *vcnl4035_attributes[] = {
		&iio_const_attr_integration_time_available.dev_attr.attr,
		NULL,
		};

		static const struct attribute_group vcnl4035_attribute_group = {
		.attrs = vcnl4035_attributes,
		};

		static const struct iio_info vcnl4035_info = {
		.read_raw = vcnl4035_read_raw,
		.write_raw = vcnl4035_write_raw,
		.read_event_value = vcnl4035_read_thresh,
		.write_event_value = vcnl4035_write_thresh,
		.attrs = &vcnl4035_attribute_group,
		};

		static const struct iio_event_spec vcnl4035_event_spec[] = {
		{
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_RISING,
		.mask_separate = BIT(IIO_EV_INFO_VALUE),
		}, {
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_FALLING,
		.mask_separate = BIT(IIO_EV_INFO_VALUE),
		}, {
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_EITHER,
		.mask_separate = BIT(IIO_EV_INFO_PERIOD),
		},
		};

		enum vcnl4035_scan_index_order {
		VCNL4035_CHAN_INDEX_LIGHT,
		VCNL4035_CHAN_INDEX_WHITE_LED,
		};

		static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
		.validate_scan_mask = &iio_validate_scan_mask_onehot,
		};

		static const struct iio_chan_spec vcnl4035_channels[] = {
		{
		.type = IIO_LIGHT,
		.channel = 0,
		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) \|
		BIT(IIO_CHAN_INFO_INT_TIME) \|
		BIT(IIO_CHAN_INFO_SCALE),
		.event_spec = vcnl4035_event_spec,
		.num_event_specs = ARRAY_SIZE(vcnl4035_event_spec),
		.scan_index = VCNL4035_CHAN_INDEX_LIGHT,
		.scan_type = {
		.sign = 'u',
		.realbits = 16,
		.storagebits = 16,
		.endianness = IIO_LE,
		},
		},
		{
		.type = IIO_INTENSITY,
		.channel = 1,
		.modified = 1,
		.channel2 = IIO_MOD_LIGHT_BOTH,
		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
		.scan_index = VCNL4035_CHAN_INDEX_WHITE_LED,
		.scan_type = {
		.sign = 'u',
		.realbits = 16,
		.storagebits = 16,
		.endianness = IIO_LE,
		},
		},
		};

		static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status)
		{
		return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
		VCNL4035_MODE_ALS_MASK,
		status);
		}

		static int vcnl4035_init(struct vcnl4035_data *data)
		{
		int ret;
		int id;

		ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id);
		if (ret < 0) {
		dev_err(&data->client->dev, "Failed to read DEV_ID register\n");
		return ret;
		}

		if (id != VCNL4035_DEV_ID_VAL) {
		dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n",
		id, VCNL4035_DEV_ID_VAL);
		return -ENODEV;
		}

		ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE);
		if (ret < 0)
		return ret;

		/* ALS white channel enable */
		ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
		VCNL4035_MODE_ALS_WHITE_CHAN,
		1);
		if (ret) {
		dev_err(&data->client->dev, "set white channel enable %d\n",
		ret);
		return ret;
		}

		/* set default integration time - 100 ms for ALS */
		ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
		VCNL4035_ALS_IT_MASK,
		VCNL4035_ALS_IT_DEFAULT);
		if (ret) {
		dev_err(&data->client->dev, "set default ALS IT returned %d\n",
		ret);
		return ret;
		}
		data->als_it_val = VCNL4035_ALS_IT_DEFAULT;

		/* set default persistence time - 1 for ALS */
		ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
		VCNL4035_ALS_PERS_MASK,
		VCNL4035_ALS_PERS_DEFAULT);
		if (ret) {
		dev_err(&data->client->dev, "set default PERS returned %d\n",
		ret);
		return ret;
		}
		data->als_persistence = VCNL4035_ALS_PERS_DEFAULT;

		/* set default HIGH threshold for ALS */
		ret = regmap_write(data->regmap, VCNL4035_ALS_THDH,
		VCNL4035_ALS_THDH_DEFAULT);
		if (ret) {
		dev_err(&data->client->dev, "set default THDH returned %d\n",
		ret);
		return ret;
		}
		data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT;

		/* set default LOW threshold for ALS */
		ret = regmap_write(data->regmap, VCNL4035_ALS_THDL,
		VCNL4035_ALS_THDL_DEFAULT);
		if (ret) {
		dev_err(&data->client->dev, "set default THDL returned %d\n",
		ret);
		return ret;
		}
		data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT;

		return 0;
		}

		static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg)
		{
		switch (reg) {
		case VCNL4035_ALS_CONF:
		case VCNL4035_DEV_ID:
		return false;
		default:
		return true;
		}
		}

		static const struct regmap_config vcnl4035_regmap_config = {
		.name = VCNL4035_REGMAP_NAME,
		.reg_bits = 8,
		.val_bits = 16,
		.max_register = VCNL4035_DEV_ID,
		.cache_type = REGCACHE_RBTREE,
		.volatile_reg = vcnl4035_is_volatile_reg,
		.val_format_endian = REGMAP_ENDIAN_LITTLE,
		};

		static int vcnl4035_probe_trigger(struct iio_dev *indio_dev)
		{
		int ret;
		struct vcnl4035_data *data = iio_priv(indio_dev);

		data->drdy_trigger0 = devm_iio_trigger_alloc(
		indio_dev->dev.parent,
		"%s-dev%d", indio_dev->name, indio_dev->id);
		if (!data->drdy_trigger0)
		return -ENOMEM;

		data->drdy_trigger0->dev.parent = indio_dev->dev.parent;
		data->drdy_trigger0->ops = &vcnl4035_trigger_ops;
		iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev);
		ret = devm_iio_trigger_register(indio_dev->dev.parent,
		data->drdy_trigger0);
		if (ret) {
		dev_err(&data->client->dev, "iio trigger register failed\n");
		return ret;
		}

		/* Trigger setup */
		ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
		NULL, vcnl4035_trigger_consumer_handler,
		&iio_triggered_buffer_setup_ops);
		if (ret < 0) {
		dev_err(&data->client->dev, "iio triggered buffer setup failed\n");
		return ret;
		}

		/* IRQ to trigger mapping */
		ret = devm_request_threaded_irq(&data->client->dev, data->client->irq,
		NULL, vcnl4035_drdy_irq_thread,
		IRQF_TRIGGER_LOW \| IRQF_ONESHOT,
		VCNL4035_IRQ_NAME, indio_dev);
		if (ret < 0)
		dev_err(&data->client->dev, "request irq %d for trigger0 failed\n",
		data->client->irq);
		return ret;
		}

		static int vcnl4035_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		struct vcnl4035_data *data;
		struct iio_dev *indio_dev;
		struct regmap *regmap;
		int ret;

		indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
		if (!indio_dev)
		return -ENOMEM;

		regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config);
		if (IS_ERR(regmap)) {
		dev_err(&client->dev, "regmap_init failed!\n");
		return PTR_ERR(regmap);
		}

		data = iio_priv(indio_dev);
		i2c_set_clientdata(client, indio_dev);
		data->client = client;
		data->regmap = regmap;

		indio_dev->dev.parent = &client->dev;
		indio_dev->info = &vcnl4035_info;
		indio_dev->name = VCNL4035_DRV_NAME;
		indio_dev->channels = vcnl4035_channels;
		indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels);
		indio_dev->modes = INDIO_DIRECT_MODE;

		ret = vcnl4035_init(data);
		if (ret < 0) {
		dev_err(&client->dev, "vcnl4035 chip init failed\n");
		return ret;
		}

		if (client->irq > 0) {
		ret = vcnl4035_probe_trigger(indio_dev);
		if (ret < 0) {
		dev_err(&client->dev, "vcnl4035 unable init trigger\n");
		goto fail_poweroff;
		}
		}

		ret = pm_runtime_set_active(&client->dev);
		if (ret < 0)
		goto fail_poweroff;

		ret = iio_device_register(indio_dev);
		if (ret < 0)
		goto fail_poweroff;

		pm_runtime_enable(&client->dev);
		pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS);
		pm_runtime_use_autosuspend(&client->dev);

		return 0;

		fail_poweroff:
		vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE);
		return ret;
		}

		static int vcnl4035_remove(struct i2c_client *client)
		{
		struct iio_dev *indio_dev = i2c_get_clientdata(client);

		pm_runtime_dont_use_autosuspend(&client->dev);
		pm_runtime_disable(&client->dev);
		iio_device_unregister(indio_dev);
		pm_runtime_set_suspended(&client->dev);

		return vcnl4035_set_als_power_state(iio_priv(indio_dev),
		VCNL4035_MODE_ALS_DISABLE);
		}

		static int __maybe_unused vcnl4035_runtime_suspend(struct device *dev)
		{
		struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
		struct vcnl4035_data *data = iio_priv(indio_dev);
		int ret;

		ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE);
		regcache_mark_dirty(data->regmap);

		return ret;
		}

		static int __maybe_unused vcnl4035_runtime_resume(struct device *dev)
		{
		struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
		struct vcnl4035_data *data = iio_priv(indio_dev);
		int ret;

		regcache_sync(data->regmap);
		ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE);
		if (ret < 0)
		return ret;

		/* wait for 1 ALS integration cycle */
		msleep(data->als_it_val * 100);

		return 0;
		}

		static const struct dev_pm_ops vcnl4035_pm_ops = {
		SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
		pm_runtime_force_resume)
		SET_RUNTIME_PM_OPS(vcnl4035_runtime_suspend,
		vcnl4035_runtime_resume, NULL)
		};

		static const struct of_device_id vcnl4035_of_match[] = {
		{ .compatible = "vishay,vcnl4035", },
		{ }
		};
		MODULE_DEVICE_TABLE(of, vcnl4035_of_match);

		static struct i2c_driver vcnl4035_driver = {
		.driver = {
		.name = VCNL4035_DRV_NAME,
		.pm = &vcnl4035_pm_ops,
		.of_match_table = vcnl4035_of_match,
		},
		.probe = vcnl4035_probe,
		.remove = vcnl4035_remove,
		};

		module_i2c_driver(vcnl4035_driver);

		MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>");
		MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver");
		MODULE_LICENSE("GPL v2");

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