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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Sensortek STK3310/STK3311 Ambient Light and Proximity Sensor4 *5 * Copyright (c) 2015, Intel Corporation.6 *7 * IIO driver for STK3310/STK3311. 7-bit I2C address: 0x48.8 */9 10#include <linux/i2c.h>11#include <linux/interrupt.h>12#include <linux/kernel.h>13#include <linux/module.h>14#include <linux/mod_devicetable.h>15#include <linux/regmap.h>16#include <linux/iio/events.h>17#include <linux/iio/iio.h>18#include <linux/iio/sysfs.h>19 20#define STK3310_REG_STATE			0x0021#define STK3310_REG_PSCTRL			0x0122#define STK3310_REG_ALSCTRL			0x0223#define STK3310_REG_INT				0x0424#define STK3310_REG_THDH_PS			0x0625#define STK3310_REG_THDL_PS			0x0826#define STK3310_REG_FLAG			0x1027#define STK3310_REG_PS_DATA_MSB			0x1128#define STK3310_REG_PS_DATA_LSB			0x1229#define STK3310_REG_ALS_DATA_MSB		0x1330#define STK3310_REG_ALS_DATA_LSB		0x1431#define STK3310_REG_ID				0x3E32#define STK3310_MAX_REG				0x8033 34#define STK3310_STATE_EN_PS			BIT(0)35#define STK3310_STATE_EN_ALS			BIT(1)36#define STK3310_STATE_STANDBY			0x0037 38#define STK3013_CHIP_ID_VAL			0x3139#define STK3310_CHIP_ID_VAL			0x1340#define STK3311_CHIP_ID_VAL			0x1D41#define STK3311A_CHIP_ID_VAL			0x1542#define STK3311S34_CHIP_ID_VAL			0x1E43#define STK3311X_CHIP_ID_VAL			0x1244#define STK3335_CHIP_ID_VAL			0x5145#define STK3310_PSINT_EN			0x0146#define STK3310_PS_MAX_VAL			0xFFFF47 48#define STK3310_DRIVER_NAME			"stk3310"49#define STK3310_REGMAP_NAME			"stk3310_regmap"50#define STK3310_EVENT				"stk3310_event"51 52#define STK3310_SCALE_AVAILABLE			"6.4 1.6 0.4 0.1"53 54#define STK3310_IT_AVAILABLE \55	"0.000185 0.000370 0.000741 0.001480 0.002960 0.005920 0.011840 " \56	"0.023680 0.047360 0.094720 0.189440 0.378880 0.757760 1.515520 " \57	"3.031040 6.062080"58 59#define STK3310_REGFIELD(name)						    \60	do {								    \61		data->reg_##name =					    \62			devm_regmap_field_alloc(&client->dev, regmap,	    \63				stk3310_reg_field_##name);		    \64		if (IS_ERR(data->reg_##name)) {				    \65			dev_err(&client->dev, "reg field alloc failed.\n"); \66			return PTR_ERR(data->reg_##name);		    \67		}							    \68	} while (0)69 70static const struct reg_field stk3310_reg_field_state =71				REG_FIELD(STK3310_REG_STATE, 0, 2);72static const struct reg_field stk3310_reg_field_als_gain =73				REG_FIELD(STK3310_REG_ALSCTRL, 4, 5);74static const struct reg_field stk3310_reg_field_ps_gain =75				REG_FIELD(STK3310_REG_PSCTRL, 4, 5);76static const struct reg_field stk3310_reg_field_als_it =77				REG_FIELD(STK3310_REG_ALSCTRL, 0, 3);78static const struct reg_field stk3310_reg_field_ps_it =79				REG_FIELD(STK3310_REG_PSCTRL, 0, 3);80static const struct reg_field stk3310_reg_field_int_ps =81				REG_FIELD(STK3310_REG_INT, 0, 2);82static const struct reg_field stk3310_reg_field_flag_psint =83				REG_FIELD(STK3310_REG_FLAG, 4, 4);84static const struct reg_field stk3310_reg_field_flag_nf =85				REG_FIELD(STK3310_REG_FLAG, 0, 0);86 87static const u8 stk3310_chip_ids[] = {88	STK3013_CHIP_ID_VAL,89	STK3310_CHIP_ID_VAL,90	STK3311A_CHIP_ID_VAL,91	STK3311S34_CHIP_ID_VAL,92	STK3311X_CHIP_ID_VAL,93	STK3311_CHIP_ID_VAL,94	STK3335_CHIP_ID_VAL,95};96 97/* Estimate maximum proximity values with regard to measurement scale. */98static const int stk3310_ps_max[4] = {99	STK3310_PS_MAX_VAL / 640,100	STK3310_PS_MAX_VAL / 160,101	STK3310_PS_MAX_VAL /  40,102	STK3310_PS_MAX_VAL /  10103};104 105static const int stk3310_scale_table[][2] = {106	{6, 400000}, {1, 600000}, {0, 400000}, {0, 100000}107};108 109/* Integration time in seconds, microseconds */110static const int stk3310_it_table[][2] = {111	{0, 185},	{0, 370},	{0, 741},	{0, 1480},112	{0, 2960},	{0, 5920},	{0, 11840},	{0, 23680},113	{0, 47360},	{0, 94720},	{0, 189440},	{0, 378880},114	{0, 757760},	{1, 515520},	{3, 31040},	{6, 62080},115};116 117struct stk3310_data {118	struct i2c_client *client;119	struct mutex lock;120	bool als_enabled;121	bool ps_enabled;122	uint32_t ps_near_level;123	u64 timestamp;124	struct regmap *regmap;125	struct regmap_field *reg_state;126	struct regmap_field *reg_als_gain;127	struct regmap_field *reg_ps_gain;128	struct regmap_field *reg_als_it;129	struct regmap_field *reg_ps_it;130	struct regmap_field *reg_int_ps;131	struct regmap_field *reg_flag_psint;132	struct regmap_field *reg_flag_nf;133};134 135static const struct iio_event_spec stk3310_events[] = {136	/* Proximity event */137	{138		.type = IIO_EV_TYPE_THRESH,139		.dir = IIO_EV_DIR_RISING,140		.mask_separate = BIT(IIO_EV_INFO_VALUE) |141				 BIT(IIO_EV_INFO_ENABLE),142	},143	/* Out-of-proximity event */144	{145		.type = IIO_EV_TYPE_THRESH,146		.dir = IIO_EV_DIR_FALLING,147		.mask_separate = BIT(IIO_EV_INFO_VALUE) |148				 BIT(IIO_EV_INFO_ENABLE),149	},150};151 152static ssize_t stk3310_read_near_level(struct iio_dev *indio_dev,153				       uintptr_t priv,154				       const struct iio_chan_spec *chan,155				       char *buf)156{157	struct stk3310_data *data = iio_priv(indio_dev);158 159	return sprintf(buf, "%u\n", data->ps_near_level);160}161 162static const struct iio_chan_spec_ext_info stk3310_ext_info[] = {163	{164		.name = "nearlevel",165		.shared = IIO_SEPARATE,166		.read = stk3310_read_near_level,167	},168	{ /* sentinel */ }169};170 171static const struct iio_chan_spec stk3310_channels[] = {172	{173		.type = IIO_LIGHT,174		.info_mask_separate =175			BIT(IIO_CHAN_INFO_RAW) |176			BIT(IIO_CHAN_INFO_SCALE) |177			BIT(IIO_CHAN_INFO_INT_TIME),178	},179	{180		.type = IIO_PROXIMITY,181		.info_mask_separate =182			BIT(IIO_CHAN_INFO_RAW) |183			BIT(IIO_CHAN_INFO_SCALE) |184			BIT(IIO_CHAN_INFO_INT_TIME),185		.event_spec = stk3310_events,186		.num_event_specs = ARRAY_SIZE(stk3310_events),187		.ext_info = stk3310_ext_info,188	}189};190 191static IIO_CONST_ATTR(in_illuminance_scale_available, STK3310_SCALE_AVAILABLE);192 193static IIO_CONST_ATTR(in_proximity_scale_available, STK3310_SCALE_AVAILABLE);194 195static IIO_CONST_ATTR(in_illuminance_integration_time_available,196		      STK3310_IT_AVAILABLE);197 198static IIO_CONST_ATTR(in_proximity_integration_time_available,199		      STK3310_IT_AVAILABLE);200 201static struct attribute *stk3310_attributes[] = {202	&iio_const_attr_in_illuminance_scale_available.dev_attr.attr,203	&iio_const_attr_in_proximity_scale_available.dev_attr.attr,204	&iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr,205	&iio_const_attr_in_proximity_integration_time_available.dev_attr.attr,206	NULL,207};208 209static const struct attribute_group stk3310_attribute_group = {210	.attrs = stk3310_attributes211};212 213static int stk3310_check_chip_id(const u8 chip_id)214{215	for (int i = 0; i < ARRAY_SIZE(stk3310_chip_ids); i++) {216		if (chip_id == stk3310_chip_ids[i])217			return 0;218	}219 220	return -ENODEV;221}222 223static int stk3310_get_index(const int table[][2], int table_size,224			     int val, int val2)225{226	int i;227 228	for (i = 0; i < table_size; i++) {229		if (val == table[i][0] && val2 == table[i][1])230			return i;231	}232 233	return -EINVAL;234}235 236static int stk3310_read_event(struct iio_dev *indio_dev,237			      const struct iio_chan_spec *chan,238			      enum iio_event_type type,239			      enum iio_event_direction dir,240			      enum iio_event_info info,241			      int *val, int *val2)242{243	u8 reg;244	__be16 buf;245	int ret;246	struct stk3310_data *data = iio_priv(indio_dev);247 248	if (info != IIO_EV_INFO_VALUE)249		return -EINVAL;250 251	/* Only proximity interrupts are implemented at the moment. */252	if (dir == IIO_EV_DIR_RISING)253		reg = STK3310_REG_THDH_PS;254	else if (dir == IIO_EV_DIR_FALLING)255		reg = STK3310_REG_THDL_PS;256	else257		return -EINVAL;258 259	mutex_lock(&data->lock);260	ret = regmap_bulk_read(data->regmap, reg, &buf, 2);261	mutex_unlock(&data->lock);262	if (ret < 0) {263		dev_err(&data->client->dev, "register read failed\n");264		return ret;265	}266	*val = be16_to_cpu(buf);267 268	return IIO_VAL_INT;269}270 271static int stk3310_write_event(struct iio_dev *indio_dev,272			       const struct iio_chan_spec *chan,273			       enum iio_event_type type,274			       enum iio_event_direction dir,275			       enum iio_event_info info,276			       int val, int val2)277{278	u8 reg;279	__be16 buf;280	int ret;281	unsigned int index;282	struct stk3310_data *data = iio_priv(indio_dev);283	struct i2c_client *client = data->client;284 285	ret = regmap_field_read(data->reg_ps_gain, &index);286	if (ret < 0)287		return ret;288 289	if (val < 0 || val > stk3310_ps_max[index])290		return -EINVAL;291 292	if (dir == IIO_EV_DIR_RISING)293		reg = STK3310_REG_THDH_PS;294	else if (dir == IIO_EV_DIR_FALLING)295		reg = STK3310_REG_THDL_PS;296	else297		return -EINVAL;298 299	buf = cpu_to_be16(val);300	ret = regmap_bulk_write(data->regmap, reg, &buf, 2);301	if (ret < 0)302		dev_err(&client->dev, "failed to set PS threshold!\n");303 304	return ret;305}306 307static int stk3310_read_event_config(struct iio_dev *indio_dev,308				     const struct iio_chan_spec *chan,309				     enum iio_event_type type,310				     enum iio_event_direction dir)311{312	unsigned int event_val;313	int ret;314	struct stk3310_data *data = iio_priv(indio_dev);315 316	ret = regmap_field_read(data->reg_int_ps, &event_val);317	if (ret < 0)318		return ret;319 320	return event_val;321}322 323static int stk3310_write_event_config(struct iio_dev *indio_dev,324				      const struct iio_chan_spec *chan,325				      enum iio_event_type type,326				      enum iio_event_direction dir,327				      int state)328{329	int ret;330	struct stk3310_data *data = iio_priv(indio_dev);331	struct i2c_client *client = data->client;332 333	if (state < 0 || state > 7)334		return -EINVAL;335 336	/* Set INT_PS value */337	mutex_lock(&data->lock);338	ret = regmap_field_write(data->reg_int_ps, state);339	if (ret < 0)340		dev_err(&client->dev, "failed to set interrupt mode\n");341	mutex_unlock(&data->lock);342 343	return ret;344}345 346static int stk3310_read_raw(struct iio_dev *indio_dev,347			    struct iio_chan_spec const *chan,348			    int *val, int *val2, long mask)349{350	u8 reg;351	__be16 buf;352	int ret;353	unsigned int index;354	struct stk3310_data *data = iio_priv(indio_dev);355	struct i2c_client *client = data->client;356 357	if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)358		return -EINVAL;359 360	switch (mask) {361	case IIO_CHAN_INFO_RAW:362		if (chan->type == IIO_LIGHT)363			reg = STK3310_REG_ALS_DATA_MSB;364		else365			reg = STK3310_REG_PS_DATA_MSB;366 367		mutex_lock(&data->lock);368		ret = regmap_bulk_read(data->regmap, reg, &buf, 2);369		if (ret < 0) {370			dev_err(&client->dev, "register read failed\n");371			mutex_unlock(&data->lock);372			return ret;373		}374		*val = be16_to_cpu(buf);375		mutex_unlock(&data->lock);376		return IIO_VAL_INT;377	case IIO_CHAN_INFO_INT_TIME:378		if (chan->type == IIO_LIGHT)379			ret = regmap_field_read(data->reg_als_it, &index);380		else381			ret = regmap_field_read(data->reg_ps_it, &index);382		if (ret < 0)383			return ret;384 385		*val = stk3310_it_table[index][0];386		*val2 = stk3310_it_table[index][1];387		return IIO_VAL_INT_PLUS_MICRO;388	case IIO_CHAN_INFO_SCALE:389		if (chan->type == IIO_LIGHT)390			ret = regmap_field_read(data->reg_als_gain, &index);391		else392			ret = regmap_field_read(data->reg_ps_gain, &index);393		if (ret < 0)394			return ret;395 396		*val = stk3310_scale_table[index][0];397		*val2 = stk3310_scale_table[index][1];398		return IIO_VAL_INT_PLUS_MICRO;399	}400 401	return -EINVAL;402}403 404static int stk3310_write_raw(struct iio_dev *indio_dev,405			     struct iio_chan_spec const *chan,406			     int val, int val2, long mask)407{408	int ret;409	int index;410	struct stk3310_data *data = iio_priv(indio_dev);411 412	if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)413		return -EINVAL;414 415	switch (mask) {416	case IIO_CHAN_INFO_INT_TIME:417		index = stk3310_get_index(stk3310_it_table,418					  ARRAY_SIZE(stk3310_it_table),419					  val, val2);420		if (index < 0)421			return -EINVAL;422		mutex_lock(&data->lock);423		if (chan->type == IIO_LIGHT)424			ret = regmap_field_write(data->reg_als_it, index);425		else426			ret = regmap_field_write(data->reg_ps_it, index);427		if (ret < 0)428			dev_err(&data->client->dev,429				"sensor configuration failed\n");430		mutex_unlock(&data->lock);431		return ret;432 433	case IIO_CHAN_INFO_SCALE:434		index = stk3310_get_index(stk3310_scale_table,435					  ARRAY_SIZE(stk3310_scale_table),436					  val, val2);437		if (index < 0)438			return -EINVAL;439		mutex_lock(&data->lock);440		if (chan->type == IIO_LIGHT)441			ret = regmap_field_write(data->reg_als_gain, index);442		else443			ret = regmap_field_write(data->reg_ps_gain, index);444		if (ret < 0)445			dev_err(&data->client->dev,446				"sensor configuration failed\n");447		mutex_unlock(&data->lock);448		return ret;449	}450 451	return -EINVAL;452}453 454static const struct iio_info stk3310_info = {455	.read_raw		= stk3310_read_raw,456	.write_raw		= stk3310_write_raw,457	.attrs			= &stk3310_attribute_group,458	.read_event_value	= stk3310_read_event,459	.write_event_value	= stk3310_write_event,460	.read_event_config	= stk3310_read_event_config,461	.write_event_config	= stk3310_write_event_config,462};463 464static int stk3310_set_state(struct stk3310_data *data, u8 state)465{466	int ret;467	struct i2c_client *client = data->client;468 469	/* 3-bit state; 0b100 is not supported. */470	if (state > 7 || state == 4)471		return -EINVAL;472 473	mutex_lock(&data->lock);474	ret = regmap_field_write(data->reg_state, state);475	if (ret < 0) {476		dev_err(&client->dev, "failed to change sensor state\n");477	} else if (state != STK3310_STATE_STANDBY) {478		/* Don't reset the 'enabled' flags if we're going in standby */479		data->ps_enabled  = !!(state & STK3310_STATE_EN_PS);480		data->als_enabled = !!(state & STK3310_STATE_EN_ALS);481	}482	mutex_unlock(&data->lock);483 484	return ret;485}486 487static int stk3310_init(struct iio_dev *indio_dev)488{489	int ret;490	int chipid;491	u8 state;492	struct stk3310_data *data = iio_priv(indio_dev);493	struct i2c_client *client = data->client;494 495	ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid);496	if (ret < 0)497		return ret;498 499	ret = stk3310_check_chip_id(chipid);500	if (ret < 0)501		dev_info(&client->dev, "new unknown chip id: 0x%x\n", chipid);502 503	state = STK3310_STATE_EN_ALS | STK3310_STATE_EN_PS;504	ret = stk3310_set_state(data, state);505	if (ret < 0) {506		dev_err(&client->dev, "failed to enable sensor");507		return ret;508	}509 510	/* Enable PS interrupts */511	ret = regmap_field_write(data->reg_int_ps, STK3310_PSINT_EN);512	if (ret < 0)513		dev_err(&client->dev, "failed to enable interrupts!\n");514 515	return ret;516}517 518static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg)519{520	switch (reg) {521	case STK3310_REG_ALS_DATA_MSB:522	case STK3310_REG_ALS_DATA_LSB:523	case STK3310_REG_PS_DATA_LSB:524	case STK3310_REG_PS_DATA_MSB:525	case STK3310_REG_FLAG:526		return true;527	default:528		return false;529	}530}531 532static const struct regmap_config stk3310_regmap_config = {533	.name = STK3310_REGMAP_NAME,534	.reg_bits = 8,535	.val_bits = 8,536	.max_register = STK3310_MAX_REG,537	.cache_type = REGCACHE_RBTREE,538	.volatile_reg = stk3310_is_volatile_reg,539};540 541static int stk3310_regmap_init(struct stk3310_data *data)542{543	struct regmap *regmap;544	struct i2c_client *client;545 546	client = data->client;547	regmap = devm_regmap_init_i2c(client, &stk3310_regmap_config);548	if (IS_ERR(regmap)) {549		dev_err(&client->dev, "regmap initialization failed.\n");550		return PTR_ERR(regmap);551	}552	data->regmap = regmap;553 554	STK3310_REGFIELD(state);555	STK3310_REGFIELD(als_gain);556	STK3310_REGFIELD(ps_gain);557	STK3310_REGFIELD(als_it);558	STK3310_REGFIELD(ps_it);559	STK3310_REGFIELD(int_ps);560	STK3310_REGFIELD(flag_psint);561	STK3310_REGFIELD(flag_nf);562 563	return 0;564}565 566static irqreturn_t stk3310_irq_handler(int irq, void *private)567{568	struct iio_dev *indio_dev = private;569	struct stk3310_data *data = iio_priv(indio_dev);570 571	data->timestamp = iio_get_time_ns(indio_dev);572 573	return IRQ_WAKE_THREAD;574}575 576static irqreturn_t stk3310_irq_event_handler(int irq, void *private)577{578	int ret;579	unsigned int dir;580	u64 event;581 582	struct iio_dev *indio_dev = private;583	struct stk3310_data *data = iio_priv(indio_dev);584 585	/* Read FLAG_NF to figure out what threshold has been met. */586	mutex_lock(&data->lock);587	ret = regmap_field_read(data->reg_flag_nf, &dir);588	if (ret < 0) {589		dev_err(&data->client->dev, "register read failed: %d\n", ret);590		goto out;591	}592	event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1,593				     IIO_EV_TYPE_THRESH,594				     (dir ? IIO_EV_DIR_FALLING :595					    IIO_EV_DIR_RISING));596	iio_push_event(indio_dev, event, data->timestamp);597 598	/* Reset the interrupt flag */599	ret = regmap_field_write(data->reg_flag_psint, 0);600	if (ret < 0)601		dev_err(&data->client->dev, "failed to reset interrupts\n");602out:603	mutex_unlock(&data->lock);604 605	return IRQ_HANDLED;606}607 608static int stk3310_probe(struct i2c_client *client)609{610	int ret;611	struct iio_dev *indio_dev;612	struct stk3310_data *data;613 614	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));615	if (!indio_dev) {616		dev_err(&client->dev, "iio allocation failed!\n");617		return -ENOMEM;618	}619 620	data = iio_priv(indio_dev);621	data->client = client;622	i2c_set_clientdata(client, indio_dev);623 624	device_property_read_u32(&client->dev, "proximity-near-level",625				 &data->ps_near_level);626 627	mutex_init(&data->lock);628 629	ret = stk3310_regmap_init(data);630	if (ret < 0)631		return ret;632 633	indio_dev->info = &stk3310_info;634	indio_dev->name = STK3310_DRIVER_NAME;635	indio_dev->modes = INDIO_DIRECT_MODE;636	indio_dev->channels = stk3310_channels;637	indio_dev->num_channels = ARRAY_SIZE(stk3310_channels);638 639	ret = stk3310_init(indio_dev);640	if (ret < 0)641		return ret;642 643	if (client->irq > 0) {644		ret = devm_request_threaded_irq(&client->dev, client->irq,645						stk3310_irq_handler,646						stk3310_irq_event_handler,647						IRQF_TRIGGER_FALLING |648						IRQF_ONESHOT,649						STK3310_EVENT, indio_dev);650		if (ret < 0) {651			dev_err(&client->dev, "request irq %d failed\n",652				client->irq);653			goto err_standby;654		}655	}656 657	ret = iio_device_register(indio_dev);658	if (ret < 0) {659		dev_err(&client->dev, "device_register failed\n");660		goto err_standby;661	}662 663	return 0;664 665err_standby:666	stk3310_set_state(data, STK3310_STATE_STANDBY);667	return ret;668}669 670static void stk3310_remove(struct i2c_client *client)671{672	struct iio_dev *indio_dev = i2c_get_clientdata(client);673 674	iio_device_unregister(indio_dev);675	stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY);676}677 678static int stk3310_suspend(struct device *dev)679{680	struct stk3310_data *data;681 682	data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));683 684	return stk3310_set_state(data, STK3310_STATE_STANDBY);685}686 687static int stk3310_resume(struct device *dev)688{689	u8 state = 0;690	struct stk3310_data *data;691 692	data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));693	if (data->ps_enabled)694		state |= STK3310_STATE_EN_PS;695	if (data->als_enabled)696		state |= STK3310_STATE_EN_ALS;697 698	return stk3310_set_state(data, state);699}700 701static DEFINE_SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend,702				stk3310_resume);703 704static const struct i2c_device_id stk3310_i2c_id[] = {705	{ "STK3013" },706	{ "STK3310" },707	{ "STK3311" },708	{ "STK3335" },709	{}710};711MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id);712 713static const struct acpi_device_id stk3310_acpi_id[] = {714	{"STK3013", 0},715	{"STK3310", 0},716	{"STK3311", 0},717	{}718};719 720MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id);721 722static const struct of_device_id stk3310_of_match[] = {723	{ .compatible = "sensortek,stk3013", },724	{ .compatible = "sensortek,stk3310", },725	{ .compatible = "sensortek,stk3311", },726	{ .compatible = "sensortek,stk3335", },727	{}728};729MODULE_DEVICE_TABLE(of, stk3310_of_match);730 731static struct i2c_driver stk3310_driver = {732	.driver = {733		.name = "stk3310",734		.of_match_table = stk3310_of_match,735		.pm = pm_sleep_ptr(&stk3310_pm_ops),736		.acpi_match_table = stk3310_acpi_id,737	},738	.probe =        stk3310_probe,739	.remove =           stk3310_remove,740	.id_table =         stk3310_i2c_id,741};742 743module_i2c_driver(stk3310_driver);744 745MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>");746MODULE_DESCRIPTION("STK3310 Ambient Light and Proximity Sensor driver");747MODULE_LICENSE("GPL v2");748