- 根目录:
- drivers
- staging
- iio
- light
- isl29018.c
/*
* A iio driver for the light sensor ISL 29018/29023/29035.
*
* IIO driver for monitoring ambient light intensity in luxi, proximity
* sensing and infrared sensing.
*
* Copyright (c) 2010, NVIDIA Corporation.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/acpi.h>
#define CONVERSION_TIME_MS 100
#define ISL29018_REG_ADD_COMMAND1 0x00
#define COMMMAND1_OPMODE_SHIFT 5
#define COMMMAND1_OPMODE_MASK (7 << COMMMAND1_OPMODE_SHIFT)
#define COMMMAND1_OPMODE_POWER_DOWN 0
#define COMMMAND1_OPMODE_ALS_ONCE 1
#define COMMMAND1_OPMODE_IR_ONCE 2
#define COMMMAND1_OPMODE_PROX_ONCE 3
#define ISL29018_REG_ADD_COMMANDII 0x01
#define COMMANDII_RESOLUTION_SHIFT 2
#define COMMANDII_RESOLUTION_MASK (0x3 << COMMANDII_RESOLUTION_SHIFT)
#define COMMANDII_RANGE_SHIFT 0
#define COMMANDII_RANGE_MASK (0x3 << COMMANDII_RANGE_SHIFT)
#define COMMANDII_SCHEME_SHIFT 7
#define COMMANDII_SCHEME_MASK (0x1 << COMMANDII_SCHEME_SHIFT)
#define ISL29018_REG_ADD_DATA_LSB 0x02
#define ISL29018_REG_ADD_DATA_MSB 0x03
#define ISL29018_REG_TEST 0x08
#define ISL29018_TEST_SHIFT 0
#define ISL29018_TEST_MASK (0xFF << ISL29018_TEST_SHIFT)
#define ISL29035_REG_DEVICE_ID 0x0F
#define ISL29035_DEVICE_ID_SHIFT 0x03
#define ISL29035_DEVICE_ID_MASK (0x7 << ISL29035_DEVICE_ID_SHIFT)
#define ISL29035_DEVICE_ID 0x5
#define ISL29035_BOUT_SHIFT 0x07
#define ISL29035_BOUT_MASK (0x01 << ISL29035_BOUT_SHIFT)
struct isl29018_chip {
struct device *dev;
struct regmap *regmap;
struct mutex lock;
int type;
unsigned int lux_scale;
unsigned int lux_uscale;
unsigned int range;
unsigned int adc_bit;
int prox_scheme;
bool suspended;
};
static int isl29018_set_range(struct isl29018_chip *chip, unsigned long range,
unsigned int *new_range)
{
static const unsigned long supp_ranges[] = {1000, 4000, 16000, 64000};
int i;
for (i = 0; i < ARRAY_SIZE(supp_ranges); ++i) {
if (range <= supp_ranges[i]) {
*new_range = (unsigned int)supp_ranges[i];
break;
}
}
if (i >= ARRAY_SIZE(supp_ranges))
return -EINVAL;
return regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMANDII,
COMMANDII_RANGE_MASK, i << COMMANDII_RANGE_SHIFT);
}
static int isl29018_set_resolution(struct isl29018_chip *chip,
unsigned long adcbit, unsigned int *conf_adc_bit)
{
static const unsigned long supp_adcbit[] = {16, 12, 8, 4};
int i;
for (i = 0; i < ARRAY_SIZE(supp_adcbit); ++i) {
if (adcbit >= supp_adcbit[i]) {
*conf_adc_bit = (unsigned int)supp_adcbit[i];
break;
}
}
if (i >= ARRAY_SIZE(supp_adcbit))
return -EINVAL;
return regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMANDII,
COMMANDII_RESOLUTION_MASK,
i << COMMANDII_RESOLUTION_SHIFT);
}
static int isl29018_read_sensor_input(struct isl29018_chip *chip, int mode)
{
int status;
unsigned int lsb;
unsigned int msb;
/* Set mode */
status = regmap_write(chip->regmap, ISL29018_REG_ADD_COMMAND1,
mode << COMMMAND1_OPMODE_SHIFT);
if (status) {
dev_err(chip->dev,
"Error in setting operating mode err %d\n", status);
return status;
}
msleep(CONVERSION_TIME_MS);
status = regmap_read(chip->regmap, ISL29018_REG_ADD_DATA_LSB, &lsb);
if (status < 0) {
dev_err(chip->dev,
"Error in reading LSB DATA with err %d\n", status);
return status;
}
status = regmap_read(chip->regmap, ISL29018_REG_ADD_DATA_MSB, &msb);
if (status < 0) {
dev_err(chip->dev,
"Error in reading MSB DATA with error %d\n", status);
return status;
}
dev_vdbg(chip->dev, "MSB 0x%x and LSB 0x%x\n", msb, lsb);
return (msb << 8) | lsb;
}
static int isl29018_read_lux(struct isl29018_chip *chip, int *lux)
{
int lux_data;
unsigned int data_x_range, lux_unshifted;
lux_data = isl29018_read_sensor_input(chip, COMMMAND1_OPMODE_ALS_ONCE);
if (lux_data < 0)
return lux_data;
/* To support fractional scaling, separate the unshifted lux
* into two calculations: int scaling and micro-scaling.
* lux_uscale ranges from 0-999999, so about 20 bits. Split
* the /1,000,000 in two to reduce the risk of over/underflow.
*/
data_x_range = lux_data * chip->range;
lux_unshifted = data_x_range * chip->lux_scale;
lux_unshifted += data_x_range / 1000 * chip->lux_uscale / 1000;
*lux = lux_unshifted >> chip->adc_bit;
return 0;
}
static int isl29018_read_ir(struct isl29018_chip *chip, int *ir)
{
int ir_data;
ir_data = isl29018_read_sensor_input(chip, COMMMAND1_OPMODE_IR_ONCE);
if (ir_data < 0)
return ir_data;
*ir = ir_data;
return 0;
}
static int isl29018_read_proximity_ir(struct isl29018_chip *chip, int scheme,
int *near_ir)
{
int status;
int prox_data = -1;
int ir_data = -1;
/* Do proximity sensing with required scheme */
status = regmap_update_bits(chip->regmap, ISL29018_REG_ADD_COMMANDII,
COMMANDII_SCHEME_MASK,
scheme << COMMANDII_SCHEME_SHIFT);
if (status) {
dev_err(chip->dev, "Error in setting operating mode\n");
return status;
}
prox_data = isl29018_read_sensor_input(chip,
COMMMAND1_OPMODE_PROX_ONCE);
if (prox_data < 0)
return prox_data;
if (scheme == 1) {
*near_ir = prox_data;
return 0;
}
ir_data = isl29018_read_sensor_input(chip, COMMMAND1_OPMODE_IR_ONCE);
if (ir_data < 0)
return ir_data;
if (prox_data >= ir_data)
*near_ir = prox_data - ir_data;
else
*near_ir = 0;
return 0;
}
/* Sysfs interface */
/* range */
static ssize_t show_range(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
return sprintf(buf, "%u\n", chip->range);
}
static ssize_t store_range(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
int status;
unsigned long lval;
unsigned int new_range;
if (kstrtoul(buf, 10, &lval))
return -EINVAL;
if (!(lval == 1000UL || lval == 4000UL ||
lval == 16000UL || lval == 64000UL)) {
dev_err(dev, "The range is not supported\n");
return -EINVAL;
}
mutex_lock(&chip->lock);
status = isl29018_set_range(chip, lval, &new_range);
if (status < 0) {
mutex_unlock(&chip->lock);
dev_err(dev,
"Error in setting max range with err %d\n", status);
return status;
}
chip->range = new_range;
mutex_unlock(&chip->lock);
return count;
}
/* resolution */
static ssize_t show_resolution(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
return sprintf(buf, "%u\n", chip->adc_bit);
}
static ssize_t store_resolution(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
int status;
unsigned int val;
unsigned int new_adc_bit;
if (kstrtouint(buf, 10, &val))
return -EINVAL;
if (!(val == 4 || val == 8 || val == 12 || val == 16)) {
dev_err(dev, "The resolution is not supported\n");
return -EINVAL;
}
mutex_lock(&chip->lock);
status = isl29018_set_resolution(chip, val, &new_adc_bit);
if (status < 0) {
mutex_unlock(&chip->lock);
dev_err(dev, "Error in setting resolution\n");
return status;
}
chip->adc_bit = new_adc_bit;
mutex_unlock(&chip->lock);
return count;
}
/* proximity scheme */
static ssize_t show_prox_infrared_suppression(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
/* return the "proximity scheme" i.e. if the chip does on chip
infrared suppression (1 means perform on chip suppression) */
return sprintf(buf, "%d\n", chip->prox_scheme);
}
static ssize_t store_prox_infrared_suppression(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct isl29018_chip *chip = iio_priv(indio_dev);
int val;
if (kstrtoint(buf, 10, &val))
return -EINVAL;
if (!(val == 0 || val == 1)) {
dev_err(dev, "The mode is not supported\n");
return -EINVAL;
}
/* get the "proximity scheme" i.e. if the chip does on chip
infrared suppression (1 means perform on chip suppression) */
mutex_lock(&chip->lock);
chip->prox_scheme = val;
mutex_unlock(&chip->lock);
return count;
}
/* Channel IO */
static int isl29018_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val,
int val2,
long mask)
{
struct isl29018_chip *chip = iio_priv(indio_dev);
int ret = -EINVAL;
mutex_lock(&chip->lock);
if (mask == IIO_CHAN_INFO_CALIBSCALE && chan->type == IIO_LIGHT) {
chip->lux_scale = val;
/* With no write_raw_get_fmt(), val2 is a MICRO fraction. */
chip->lux_uscale = val2;
ret = 0;
}
mutex_unlock(&chip->lock);
return ret;
}
static int isl29018_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val,
int *val2,
long mask)
{
int ret = -EINVAL;
struct isl29018_chip *chip = iio_priv(indio_dev);
mutex_lock(&chip->lock);
if (chip->suspended) {
mutex_unlock(&chip->lock);
return -EBUSY;
}
switch (mask) {
case IIO_CHAN_INFO_RAW:
case IIO_CHAN_INFO_PROCESSED:
switch (chan->type) {
case IIO_LIGHT:
ret = isl29018_read_lux(chip, val);
break;
case IIO_INTENSITY:
ret = isl29018_read_ir(chip, val);
break;
case IIO_PROXIMITY:
ret = isl29018_read_proximity_ir(chip,
chip->prox_scheme, val);
break;
default:
break;
}
if (!ret)
ret = IIO_VAL_INT;
break;
case IIO_CHAN_INFO_CALIBSCALE:
if (chan->type == IIO_LIGHT) {
*val = chip->lux_scale;
*val2 = chip->lux_uscale;
ret = IIO_VAL_INT_PLUS_MICRO;
}
break;
default:
break;
}
mutex_unlock(&chip->lock);
return ret;
}
#define ISL29018_LIGHT_CHANNEL { \
.type = IIO_LIGHT, \
.indexed = 1, \
.channel = 0, \
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) | \
BIT(IIO_CHAN_INFO_CALIBSCALE), \
}
#define ISL29018_IR_CHANNEL { \
.type = IIO_INTENSITY, \
.modified = 1, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.channel2 = IIO_MOD_LIGHT_IR, \
}
#define ISL29018_PROXIMITY_CHANNEL { \
.type = IIO_PROXIMITY, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
}
static const struct iio_chan_spec isl29018_channels[] = {
ISL29018_LIGHT_CHANNEL,
ISL29018_IR_CHANNEL,
ISL29018_PROXIMITY_CHANNEL,
};
static const struct iio_chan_spec isl29023_channels[] = {
ISL29018_LIGHT_CHANNEL,
ISL29018_IR_CHANNEL,
};
static IIO_DEVICE_ATTR(range, S_IRUGO | S_IWUSR, show_range, store_range, 0);
static IIO_CONST_ATTR(range_available, "1000 4000 16000 64000");
static IIO_CONST_ATTR(adc_resolution_available, "4 8 12 16");
static IIO_DEVICE_ATTR(adc_resolution, S_IRUGO | S_IWUSR,
show_resolution, store_resolution, 0);
static IIO_DEVICE_ATTR(proximity_on_chip_ambient_infrared_suppression,
S_IRUGO | S_IWUSR,
show_prox_infrared_suppression,
store_prox_infrared_suppression, 0);
#define ISL29018_DEV_ATTR(name) (&iio_dev_attr_##name.dev_attr.attr)
#define ISL29018_CONST_ATTR(name) (&iio_const_attr_##name.dev_attr.attr)
static struct attribute *isl29018_attributes[] = {
ISL29018_DEV_ATTR(range),
ISL29018_CONST_ATTR(range_available),
ISL29018_DEV_ATTR(adc_resolution),
ISL29018_CONST_ATTR(adc_resolution_available),
ISL29018_DEV_ATTR(proximity_on_chip_ambient_infrared_suppression),
NULL
};
static struct attribute *isl29023_attributes[] = {
ISL29018_DEV_ATTR(range),
ISL29018_CONST_ATTR(range_available),
ISL29018_DEV_ATTR(adc_resolution),
ISL29018_CONST_ATTR(adc_resolution_available),
NULL
};
static const struct attribute_group isl29018_group = {
.attrs = isl29018_attributes,
};
static const struct attribute_group isl29023_group = {
.attrs = isl29023_attributes,
};
static int isl29035_detect(struct isl29018_chip *chip)
{
int status;
unsigned int id;
status = regmap_read(chip->regmap, ISL29035_REG_DEVICE_ID, &id);
if (status < 0) {
dev_err(chip->dev,
"Error reading ID register with error %d\n",
status);
return status;
}
id = (id & ISL29035_DEVICE_ID_MASK) >> ISL29035_DEVICE_ID_SHIFT;
if (id != ISL29035_DEVICE_ID)
return -ENODEV;
/* clear out brownout bit */
return regmap_update_bits(chip->regmap, ISL29035_REG_DEVICE_ID,
ISL29035_BOUT_MASK, 0);
}
enum {
isl29018,
isl29023,
isl29035,
};
static int isl29018_chip_init(struct isl29018_chip *chip)
{
int status;
unsigned int new_adc_bit;
unsigned int new_range;
if (chip->type == isl29035) {
status = isl29035_detect(chip);
if (status < 0)
return status;
}
/* Code added per Intersil Application Note 1534:
* When VDD sinks to approximately 1.8V or below, some of
* the part's registers may change their state. When VDD
* recovers to 2.25V (or greater), the part may thus be in an
* unknown mode of operation. The user can return the part to
* a known mode of operation either by (a) setting VDD = 0V for
* 1 second or more and then powering back up with a slew rate
* of 0.5V/ms or greater, or (b) via I2C disable all ALS/PROX
* conversions, clear the test registers, and then rewrite all
* registers to the desired values.
* ...
* FOR ISL29011, ISL29018, ISL29021, ISL29023
* 1. Write 0x00 to register 0x08 (TEST)
* 2. Write 0x00 to register 0x00 (CMD1)
* 3. Rewrite all registers to the desired values
*
* ISL29018 Data Sheet (FN6619.1, Feb 11, 2010) essentially says
* the same thing EXCEPT the data sheet asks for a 1ms delay after
* writing the CMD1 register.
*/
status = regmap_write(chip->regmap, ISL29018_REG_TEST, 0x0);
if (status < 0) {
dev_err(chip->dev, "Failed to clear isl29018 TEST reg.(%d)\n",
status);
return status;
}
/* See Intersil AN1534 comments above.
* "Operating Mode" (COMMAND1) register is reprogrammed when
* data is read from the device.
*/
status = regmap_write(chip->regmap, ISL29018_REG_ADD_COMMAND1, 0);
if (status < 0) {
dev_err(chip->dev, "Failed to clear isl29018 CMD1 reg.(%d)\n",
status);
return status;
}
usleep_range(1000, 2000); /* per data sheet, page 10 */
/* set defaults */
status = isl29018_set_range(chip, chip->range, &new_range);
if (status < 0) {
dev_err(chip->dev, "Init of isl29018 fails\n");
return status;
}
status = isl29018_set_resolution(chip, chip->adc_bit,
&new_adc_bit);
return 0;
}
static const struct iio_info isl29018_info = {
.attrs = &isl29018_group,
.driver_module = THIS_MODULE,
.read_raw = &isl29018_read_raw,
.write_raw = &isl29018_write_raw,
};
static const struct iio_info isl29023_info = {
.attrs = &isl29023_group,
.driver_module = THIS_MODULE,
.read_raw = &isl29018_read_raw,
.write_raw = &isl29018_write_raw,
};
static bool is_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case ISL29018_REG_ADD_DATA_LSB:
case ISL29018_REG_ADD_DATA_MSB:
case ISL29018_REG_ADD_COMMAND1:
case ISL29018_REG_TEST:
case ISL29035_REG_DEVICE_ID:
return true;
default:
return false;
}
}
/*
* isl29018_regmap_config: regmap configuration.
* Use RBTREE mechanism for caching.
*/
static const struct regmap_config isl29018_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_reg = is_volatile_reg,
.max_register = ISL29018_REG_TEST,
.num_reg_defaults_raw = ISL29018_REG_TEST + 1,
.cache_type = REGCACHE_RBTREE,
};
/* isl29035_regmap_config: regmap configuration for ISL29035 */
static const struct regmap_config isl29035_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.volatile_reg = is_volatile_reg,
.max_register = ISL29035_REG_DEVICE_ID,
.num_reg_defaults_raw = ISL29035_REG_DEVICE_ID + 1,
.cache_type = REGCACHE_RBTREE,
};
struct chip_info {
const struct iio_chan_spec *channels;
int num_channels;
const struct iio_info *indio_info;
const struct regmap_config *regmap_cfg;
};
static const struct chip_info chip_info_tbl[] = {
[isl29018] = {
.channels = isl29018_channels,
.num_channels = ARRAY_SIZE(isl29018_channels),
.indio_info = &isl29018_info,
.regmap_cfg = &isl29018_regmap_config,
},
[isl29023] = {
.channels = isl29023_channels,
.num_channels = ARRAY_SIZE(isl29023_channels),
.indio_info = &isl29023_info,
.regmap_cfg = &isl29018_regmap_config,
},
[isl29035] = {
.channels = isl29023_channels,
.num_channels = ARRAY_SIZE(isl29023_channels),
.indio_info = &isl29023_info,
.regmap_cfg = &isl29035_regmap_config,
},
};
static const char *isl29018_match_acpi_device(struct device *dev, int *data)
{
const struct acpi_device_id *id;
id = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!id)
return NULL;
*data = (int) id->driver_data;
return dev_name(dev);
}
static int isl29018_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct isl29018_chip *chip;
struct iio_dev *indio_dev;
int err;
const char *name = NULL;
int dev_id = 0;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
if (indio_dev == NULL) {
dev_err(&client->dev, "iio allocation fails\n");
return -ENOMEM;
}
chip = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
chip->dev = &client->dev;
if (id) {
name = id->name;
dev_id = id->driver_data;
}
if (ACPI_HANDLE(&client->dev))
name = isl29018_match_acpi_device(&client->dev, &dev_id);
mutex_init(&chip->lock);
chip->type = dev_id;
chip->lux_scale = 1;
chip->lux_uscale = 0;
chip->range = 1000;
chip->adc_bit = 16;
chip->suspended = false;
chip->regmap = devm_regmap_init_i2c(client,
chip_info_tbl[dev_id].regmap_cfg);
if (IS_ERR(chip->regmap)) {
err = PTR_ERR(chip->regmap);
dev_err(chip->dev, "regmap initialization failed: %d\n", err);
return err;
}
err = isl29018_chip_init(chip);
if (err)
return err;
indio_dev->info = chip_info_tbl[dev_id].indio_info;
indio_dev->channels = chip_info_tbl[dev_id].channels;
indio_dev->num_channels = chip_info_tbl[dev_id].num_channels;
indio_dev->name = name;
indio_dev->dev.parent = &client->dev;
indio_dev->modes = INDIO_DIRECT_MODE;
err = devm_iio_device_register(&client->dev, indio_dev);
if (err) {
dev_err(&client->dev, "iio registration fails\n");
return err;
}
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int isl29018_suspend(struct device *dev)
{
struct isl29018_chip *chip = iio_priv(dev_get_drvdata(dev));
mutex_lock(&chip->lock);
/* Since this driver uses only polling commands, we are by default in
* auto shutdown (ie, power-down) mode.
* So we do not have much to do here.
*/
chip->suspended = true;
mutex_unlock(&chip->lock);
return 0;
}
static int isl29018_resume(struct device *dev)
{
struct isl29018_chip *chip = iio_priv(dev_get_drvdata(dev));
int err;
mutex_lock(&chip->lock);
err = isl29018_chip_init(chip);
if (!err)
chip->suspended = false;
mutex_unlock(&chip->lock);
return err;
}
static SIMPLE_DEV_PM_OPS(isl29018_pm_ops, isl29018_suspend, isl29018_resume);
#define ISL29018_PM_OPS (&isl29018_pm_ops)
#else
#define ISL29018_PM_OPS NULL
#endif
static const struct acpi_device_id isl29018_acpi_match[] = {
{"ISL29018", isl29018},
{"ISL29023", isl29023},
{"ISL29035", isl29035},
{},
};
MODULE_DEVICE_TABLE(acpi, isl29018_acpi_match);
static const struct i2c_device_id isl29018_id[] = {
{"isl29018", isl29018},
{"isl29023", isl29023},
{"isl29035", isl29035},
{}
};
MODULE_DEVICE_TABLE(i2c, isl29018_id);
static const struct of_device_id isl29018_of_match[] = {
{ .compatible = "isil,isl29018", },
{ .compatible = "isil,isl29023", },
{ .compatible = "isil,isl29035", },
{ },
};
MODULE_DEVICE_TABLE(of, isl29018_of_match);
static struct i2c_driver isl29018_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "isl29018",
.acpi_match_table = ACPI_PTR(isl29018_acpi_match),
.pm = ISL29018_PM_OPS,
.owner = THIS_MODULE,
.of_match_table = isl29018_of_match,
},
.probe = isl29018_probe,
.id_table = isl29018_id,
};
module_i2c_driver(isl29018_driver);
MODULE_DESCRIPTION("ISL29018 Ambient Light Sensor driver");
MODULE_LICENSE("GPL");