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    SubjectRe: [PATCH V5 2/2] staging: iio: add driver for isl29028
    On 4/13/2012 11:33 AM, Laxman Dewangan wrote:
    > Intersil's ISL29028 is concurrent Ambient Light and
    > Proximity Sensor device.
    > Add driver to access the light and IR intensity and
    > proximity value via iio interface.
    >
    > Signed-off-by: Laxman Dewangan<ldewangan@nvidia.com>
    Acked-by: Jonathan Cameron <jic23@kernel.org>

    Nice driver.
    > ---
    > Changes from V1:
    > - Taken care of cleanups comments.
    >
    > Changes from V2:
    > - use the channel info for sampling frequency selection rather than
    > exposing separate sysfs from driver.
    >
    > Changes from V3:
    > - Remove sysfs range and add scale through channel info.
    >
    > Changed from V4:
    > - Changed ISL29028_MAX_REGS macro to ISL29028_NUM_REGS
    > - Changed *_available attribute inline with their corresponding attr.
    > e.g. proximity_sampling_frequency_available to
    > in_proximity_sampling_frequency_available
    > illuminance_scale_available to
    > in_illuminance_scale_available
    > Now atrributes are:
    > in_illuminance_input
    > in_illuminance_scale
    > in_illuminance_scale_available
    > in_intensity_raw
    > in_proximity_raw
    > in_proximity_sampling_frequency
    > in_proximity_sampling_frequency_available
    >
    > drivers/staging/iio/light/Kconfig | 10 +
    > drivers/staging/iio/light/Makefile | 1 +
    > drivers/staging/iio/light/isl29028.c | 563 ++++++++++++++++++++++++++++++++++
    > 3 files changed, 574 insertions(+), 0 deletions(-)
    > create mode 100644 drivers/staging/iio/light/isl29028.c
    >
    > diff --git a/drivers/staging/iio/light/Kconfig b/drivers/staging/iio/light/Kconfig
    > index e7e9159..53b49f7 100644
    > --- a/drivers/staging/iio/light/Kconfig
    > +++ b/drivers/staging/iio/light/Kconfig
    > @@ -14,6 +14,16 @@ config SENSORS_ISL29018
    > in lux, proximity infrared sensing and normal infrared sensing.
    > Data from sensor is accessible via sysfs.
    >
    > +config SENSORS_ISL29028
    > + tristate "Intersil ISL29028 Concurrent Light and Proximity Sensor"
    > + depends on I2C
    > + select REGMAP_I2C
    > + help
    > + Provides driver for the Intersil's ISL29028 device.
    > + This driver supports the sysfs interface to get the ALS, IR intensity,
    > + Proximity value via iio. The ISL29028 provides the concurrent sensing
    > + of ambient light and proximity.
    > +
    > config SENSORS_TSL2563
    > tristate "TAOS TSL2560, TSL2561, TSL2562 and TSL2563 ambient light sensors"
    > depends on I2C
    > diff --git a/drivers/staging/iio/light/Makefile b/drivers/staging/iio/light/Makefile
    > index 3011fbf..535d313 100644
    > --- a/drivers/staging/iio/light/Makefile
    > +++ b/drivers/staging/iio/light/Makefile
    > @@ -4,4 +4,5 @@
    >
    > obj-$(CONFIG_SENSORS_TSL2563) += tsl2563.o
    > obj-$(CONFIG_SENSORS_ISL29018) += isl29018.o
    > +obj-$(CONFIG_SENSORS_ISL29028) += isl29028.o
    > obj-$(CONFIG_TSL2583) += tsl2583.o
    > diff --git a/drivers/staging/iio/light/isl29028.c b/drivers/staging/iio/light/isl29028.c
    > new file mode 100644
    > index 0000000..e705e45
    > --- /dev/null
    > +++ b/drivers/staging/iio/light/isl29028.c
    > @@ -0,0 +1,563 @@
    > +/*
    > + * IIO driver for the light sensor ISL29028.
    > + * ISL29028 is Concurrent Ambient Light and Proximity Sensor
    > + *
    > + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
    > + *
    > + * This program is free software; you can redistribute it and/or modify it
    > + * under the terms and conditions of the GNU General Public License,
    > + * version 2, as published by the Free Software Foundation.
    > + *
    > + * This program is distributed in the hope it will be useful, but WITHOUT
    > + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
    > + * more details.
    > + *
    > + * You should have received a copy of the GNU General Public License
    > + * along with this program. If not, see<http://www.gnu.org/licenses/>.
    > + */
    > +
    > +#include<linux/module.h>
    > +#include<linux/i2c.h>
    > +#include<linux/err.h>
    > +#include<linux/mutex.h>
    > +#include<linux/delay.h>
    > +#include<linux/slab.h>
    > +#include<linux/regmap.h>
    > +#include "../iio.h"
    > +#include "../sysfs.h"
    > +
    > +#define CONVERSION_TIME_MS 100
    > +
    > +#define ISL29028_REG_CONFIGURE 0x01
    > +
    > +#define CONFIGURE_ALS_IR_MODE_ALS 0
    > +#define CONFIGURE_ALS_IR_MODE_IR BIT(0)
    > +#define CONFIGURE_ALS_IR_MODE_MASK BIT(0)
    > +
    > +#define CONFIGURE_ALS_RANGE_LOW_LUX 0
    > +#define CONFIGURE_ALS_RANGE_HIGH_LUX BIT(1)
    > +#define CONFIGURE_ALS_RANGE_MASK BIT(1)
    > +
    > +#define CONFIGURE_ALS_DIS 0
    > +#define CONFIGURE_ALS_EN BIT(2)
    > +#define CONFIGURE_ALS_EN_MASK BIT(2)
    > +
    > +#define CONFIGURE_PROX_DRIVE BIT(3)
    > +
    > +#define CONFIGURE_PROX_SLP_SH 4
    > +#define CONFIGURE_PROX_SLP_MASK (7<< CONFIGURE_PROX_SLP_SH)
    > +
    > +#define CONFIGURE_PROX_EN BIT(7)
    > +#define CONFIGURE_PROX_EN_MASK BIT(7)
    > +
    > +#define ISL29028_REG_INTERRUPT 0x02
    > +
    > +#define ISL29028_REG_PROX_DATA 0x08
    > +#define ISL29028_REG_ALSIR_L 0x09
    > +#define ISL29028_REG_ALSIR_U 0x0A
    > +
    > +#define ISL29028_REG_TEST1_MODE 0x0E
    > +#define ISL29028_REG_TEST2_MODE 0x0F
    > +
    > +#define ISL29028_NUM_REGS (ISL29028_REG_TEST2_MODE + 1)
    > +
    > +enum als_ir_mode {
    > + MODE_NONE = 0,
    > + MODE_ALS,
    > + MODE_IR
    > +};
    > +
    > +struct isl29028_chip {
    > + struct device *dev;
    > + struct mutex lock;
    > + struct regmap *regmap;
    > +
    > + unsigned int prox_sampling;
    > + bool enable_prox;
    > +
    > + int lux_scale;
    > + int als_ir_mode;
    > +};
    > +
    > +static int isl29028_set_proxim_sampling(struct isl29028_chip *chip,
    > + unsigned int sampling)
    > +{
    > + static unsigned int prox_period[] = {800, 400, 200, 100, 75, 50, 12, 0};
    > + int sel;
    > + unsigned int period = DIV_ROUND_UP(1000, sampling);
    > +
    > + for (sel = 0; sel< ARRAY_SIZE(prox_period); ++sel) {
    > + if (period>= prox_period[sel])
    > + break;
    > + }
    > + return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_PROX_SLP_MASK, sel<< CONFIGURE_PROX_SLP_SH);
    > +}
    > +
    > +static int isl29028_enable_proximity(struct isl29028_chip *chip, bool enable)
    > +{
    > + int ret;
    > + int val = 0;
    > +
    > + if (enable)
    > + val = CONFIGURE_PROX_EN;
    > + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_PROX_EN_MASK, val);
    > + if (ret< 0)
    > + return ret;
    > +
    > + /* Wait for conversion to be complete for first sample */
    > + mdelay(DIV_ROUND_UP(1000, chip->prox_sampling));
    > + return 0;
    > +}
    > +
    > +static int isl29028_set_als_scale(struct isl29028_chip *chip, int lux_scale)
    > +{
    > + int val = (lux_scale == 2000) ? CONFIGURE_ALS_RANGE_HIGH_LUX :
    > + CONFIGURE_ALS_RANGE_LOW_LUX;
    > +
    > + return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_ALS_RANGE_MASK, val);
    > +}
    > +
    > +static int isl29028_set_als_ir_mode(struct isl29028_chip *chip,
    > + enum als_ir_mode mode)
    > +{
    > + int ret = 0;
    > +
    > + switch (mode) {
    > + case MODE_ALS:
    > + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_ALS_IR_MODE_MASK, CONFIGURE_ALS_IR_MODE_ALS);
    > + if (ret< 0)
    > + return ret;
    > +
    > + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_ALS_RANGE_MASK, CONFIGURE_ALS_RANGE_HIGH_LUX);
    > + break;
    > +
    > + case MODE_IR:
    > + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_ALS_IR_MODE_MASK, CONFIGURE_ALS_IR_MODE_IR);
    > + break;
    > +
    > + case MODE_NONE:
    > + return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_ALS_EN_MASK, CONFIGURE_ALS_DIS);
    > + }
    > +
    > + if (ret< 0)
    > + return ret;
    > +
    > + /* Enable the ALS/IR */
    > + ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
    > + CONFIGURE_ALS_EN_MASK, CONFIGURE_ALS_EN);
    > + if (ret< 0)
    > + return ret;
    > +
    > + /* Need to wait for conversion time if ALS/IR mode enabled */
    > + mdelay(CONVERSION_TIME_MS);
    > + return 0;
    > +}
    > +
    > +static int isl29028_read_als_ir(struct isl29028_chip *chip, int *als_ir)
    > +{
    > + unsigned int lsb;
    > + unsigned int msb;
    > + int ret;
    > +
    > + ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_L,&lsb);
    > + if (ret< 0) {
    > + dev_err(chip->dev,
    > + "Error in reading register ALSIR_L err %d\n", ret);
    > + return ret;
    > + }
    > +
    > + ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_U,&msb);
    > + if (ret< 0) {
    > + dev_err(chip->dev,
    > + "Error in reading register ALSIR_U err %d\n", ret);
    > + return ret;
    > + }
    > +
    > + *als_ir = ((msb& 0xF)<< 8) | (lsb& 0xFF);
    > + return 0;
    > +}
    > +
    > +static int isl29028_read_proxim(struct isl29028_chip *chip, int *prox)
    > +{
    > + unsigned int data;
    > + int ret;
    > +
    > + ret = regmap_read(chip->regmap, ISL29028_REG_PROX_DATA,&data);
    > + if (ret< 0) {
    > + dev_err(chip->dev, "Error in reading register %d, error %d\n",
    > + ISL29028_REG_PROX_DATA, ret);
    > + return ret;
    > + }
    > + *prox = data;
    > + return 0;
    > +}
    > +
    > +static int isl29028_proxim_get(struct isl29028_chip *chip, int *prox_data)
    > +{
    > + int ret;
    > +
    > + if (!chip->enable_prox) {
    > + ret = isl29028_enable_proximity(chip, true);
    > + if (ret< 0)
    > + return ret;
    > + chip->enable_prox = true;
    > + }
    > + return isl29028_read_proxim(chip, prox_data);
    > +}
    > +
    > +static int isl29028_als_get(struct isl29028_chip *chip, int *als_data)
    > +{
    > + int ret;
    > + int als_ir_data;
    > +
    > + if (chip->als_ir_mode != MODE_ALS) {
    > + ret = isl29028_set_als_ir_mode(chip, MODE_ALS);
    > + if (ret< 0) {
    > + dev_err(chip->dev,
    > + "Error in enabling ALS mode err %d\n", ret);
    > + return ret;
    > + }
    > + chip->als_ir_mode = MODE_ALS;
    > + }
    > +
    > + ret = isl29028_read_als_ir(chip,&als_ir_data);
    > + if (ret< 0)
    > + return ret;
    > +
    > + /*
    > + * convert als data count to lux.
    > + * if lux_scale = 125, lux = count * 0.031
    > + * if lux_scale = 2000, lux = count * 0.49
    > + */
    > + if (chip->lux_scale == 125)
    > + als_ir_data = (als_ir_data * 31) / 1000;
    > + else
    > + als_ir_data = (als_ir_data * 49) / 100;
    > +
    > + *als_data = als_ir_data;
    > + return 0;
    > +}
    > +
    > +static int isl29028_ir_get(struct isl29028_chip *chip, int *ir_data)
    > +{
    > + int ret;
    > +
    > + if (chip->als_ir_mode != MODE_IR) {
    > + ret = isl29028_set_als_ir_mode(chip, MODE_IR);
    > + if (ret< 0) {
    > + dev_err(chip->dev,
    > + "Error in enabling IR mode err %d\n", ret);
    > + return ret;
    > + }
    > + chip->als_ir_mode = MODE_IR;
    > + }
    > + return isl29028_read_als_ir(chip, ir_data);
    > +}
    > +
    > +/* Channel IO */
    > +static int isl29028_write_raw(struct iio_dev *indio_dev,
    > + struct iio_chan_spec const *chan, int val, int val2, long mask)
    > +{
    > + struct isl29028_chip *chip = iio_priv(indio_dev);
    > + int ret = -EINVAL;
    > +
    > + mutex_lock(&chip->lock);
    > + switch (chan->type) {
    > + case IIO_PROXIMITY:
    > + if (mask != IIO_CHAN_INFO_SAMP_FREQ_SEPARATE_BIT) {
    > + dev_err(chip->dev,
    > + "proximity: mask value 0x%08lx not supported\n",
    > + mask);
    > + break;
    > + }
    > + if (val< 1 || val> 100) {
    > + dev_err(chip->dev,
    > + "Samp_freq %d is not in range[1:100]\n", val);
    > + break;
    > + }
    > + ret = isl29028_set_proxim_sampling(chip, val);
    > + if (ret< 0) {
    > + dev_err(chip->dev,
    > + "Setting proximity samp_freq fail, err %d\n",
    > + ret);
    > + break;
    > + }
    > + chip->prox_sampling = val;
    > + break;
    > +
    > + case IIO_LIGHT:
    > + if (mask != IIO_CHAN_INFO_SCALE_SEPARATE_BIT) {
    > + dev_err(chip->dev,
    > + "light: mask value 0x%08lx not supported\n",
    > + mask);
    > + break;
    > + }
    > + if ((val != 125)&& (val != 2000)) {
    > + dev_err(chip->dev,
    > + "lux scale %d is invalid [125, 2000]\n", val);
    > + break;
    > + }
    > + ret = isl29028_set_als_scale(chip, val);
    > + if (ret< 0) {
    > + dev_err(chip->dev,
    > + "Setting lux scale fail with error %d\n", ret);
    > + break;
    > + }
    > + chip->lux_scale = val;
    > + break;
    > +
    > + default:
    > + dev_err(chip->dev, "Unsupported channel type\n");
    > + break;
    > + }
    > + mutex_unlock(&chip->lock);
    > + return ret;
    > +}
    > +
    > +static int isl29028_read_raw(struct iio_dev *indio_dev,
    > + struct iio_chan_spec const *chan, int *val, int *val2, long mask)
    > +{
    > + struct isl29028_chip *chip = iio_priv(indio_dev);
    > + int ret = -EINVAL;
    > +
    > + mutex_lock(&chip->lock);
    > + switch (mask) {
    > + case 0:
    > + switch (chan->type) {
    > + case IIO_LIGHT:
    > + ret = isl29028_als_get(chip, val);
    > + break;
    > + case IIO_INTENSITY:
    > + ret = isl29028_ir_get(chip, val);
    > + break;
    > + case IIO_PROXIMITY:
    > + ret = isl29028_proxim_get(chip, val);
    > + break;
    > + default:
    > + break;
    > + }
    > + if (ret< 0)
    > + break;
    > + ret = IIO_VAL_INT;
    > + break;
    > +
    > + case IIO_CHAN_INFO_SAMP_FREQ_SEPARATE_BIT:
    > + if (chan->type != IIO_PROXIMITY)
    > + break;
    > + *val = chip->prox_sampling;
    > + ret = IIO_VAL_INT;
    > + break;
    > +
    > + case IIO_CHAN_INFO_SCALE_SEPARATE_BIT:
    > + if (chan->type != IIO_LIGHT)
    > + break;
    > + *val = chip->lux_scale;
    > + ret = IIO_VAL_INT;
    > + break;
    > +
    > + default:
    > + dev_err(chip->dev, "mask value 0x%08lx not supported\n", mask);
    > + break;
    > + }
    > + mutex_unlock(&chip->lock);
    > + return ret;
    > +}
    > +
    > +static IIO_CONST_ATTR(in_proximity_sampling_frequency_available,
    > + "1, 3, 5, 10, 13, 20, 83, 100");
    > +static IIO_CONST_ATTR(in_illuminance_scale_available, "125, 2000");
    > +
    > +#define ISL29028_DEV_ATTR(name) (&iio_dev_attr_##name.dev_attr.attr)
    > +#define ISL29028_CONST_ATTR(name) (&iio_const_attr_##name.dev_attr.attr)
    > +static struct attribute *isl29028_attributes[] = {
    > + ISL29028_CONST_ATTR(in_proximity_sampling_frequency_available),
    > + ISL29028_CONST_ATTR(in_illuminance_scale_available),
    > + NULL,
    > +};
    > +
    > +static const struct attribute_group isl29108_group = {
    > + .attrs = isl29028_attributes,
    > +};
    > +
    > +static const struct iio_chan_spec isl29028_channels[] = {
    > + {
    > + .type = IIO_LIGHT,
    > + .processed_val = 1,
    > + .info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
    > + }, {
    > + .type = IIO_INTENSITY,
    > + }, {
    > + .type = IIO_PROXIMITY,
    > + .info_mask = IIO_CHAN_INFO_SAMP_FREQ_SEPARATE_BIT,
    > + }
    > +};
    > +
    > +static const struct iio_info isl29028_info = {
    > + .attrs =&isl29108_group,
    > + .driver_module = THIS_MODULE,
    > + .read_raw =&isl29028_read_raw,
    > + .write_raw =&isl29028_write_raw,
    > +};
    > +
    > +static int isl29028_chip_init(struct isl29028_chip *chip)
    > +{
    > + int ret;
    > +
    > + chip->enable_prox = false;
    > + chip->prox_sampling = 20;
    > + chip->lux_scale = 2000;
    > + chip->als_ir_mode = MODE_NONE;
    > +
    > + ret = regmap_write(chip->regmap, ISL29028_REG_TEST1_MODE, 0x0);
    > + if (ret< 0) {
    > + dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
    > + __func__, ISL29028_REG_TEST1_MODE, ret);
    > + return ret;
    > + }
    > + ret = regmap_write(chip->regmap, ISL29028_REG_TEST2_MODE, 0x0);
    > + if (ret< 0) {
    > + dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
    > + __func__, ISL29028_REG_TEST2_MODE, ret);
    > + return ret;
    > + }
    > +
    > + ret = regmap_write(chip->regmap, ISL29028_REG_CONFIGURE, 0x0);
    > + if (ret< 0) {
    > + dev_err(chip->dev, "%s(): write to reg %d failed, err = %d\n",
    > + __func__, ISL29028_REG_CONFIGURE, ret);
    > + return ret;
    > + }
    > +
    > + ret = isl29028_set_proxim_sampling(chip, chip->prox_sampling);
    > + if (ret< 0) {
    > + dev_err(chip->dev, "%s(): setting the proximity, err = %d\n",
    > + __func__, ret);
    > + return ret;
    > + }
    > +
    > + ret = isl29028_set_als_scale(chip, chip->lux_scale);
    > + if (ret< 0)
    > + dev_err(chip->dev, "%s(): setting als scale failed, err = %d\n",
    > + __func__, ret);
    > + return ret;
    > +}
    > +
    > +static bool is_volatile_reg(struct device *dev, unsigned int reg)
    > +{
    > + switch (reg) {
    > + case ISL29028_REG_INTERRUPT:
    > + case ISL29028_REG_PROX_DATA:
    > + case ISL29028_REG_ALSIR_L:
    > + case ISL29028_REG_ALSIR_U:
    > + return true;
    > + default:
    > + return false;
    > + }
    > +}
    > +
    > +static const struct regmap_config isl29028_regmap_config = {
    > + .reg_bits = 8,
    > + .val_bits = 8,
    > + .volatile_reg = is_volatile_reg,
    > + .max_register = ISL29028_NUM_REGS - 1,
    > + .num_reg_defaults_raw = ISL29028_NUM_REGS,
    > + .cache_type = REGCACHE_RBTREE,
    > +};
    > +
    > +static int __devinit isl29028_probe(struct i2c_client *client,
    > + const struct i2c_device_id *id)
    > +{
    > + struct isl29028_chip *chip;
    > + struct iio_dev *indio_dev;
    > + int ret;
    > +
    > + indio_dev = iio_allocate_device(sizeof(*chip));
    > + if (!indio_dev) {
    > + 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;
    > + mutex_init(&chip->lock);
    > +
    > + chip->regmap = devm_regmap_init_i2c(client,&isl29028_regmap_config);
    > + if (IS_ERR(chip->regmap)) {
    > + ret = PTR_ERR(chip->regmap);
    > + dev_err(chip->dev, "regmap initialization failed: %d\n", ret);
    > + goto exit_iio_free;
    > + }
    > +
    > + ret = isl29028_chip_init(chip);
    > + if (ret< 0) {
    > + dev_err(chip->dev, "chip initialization failed: %d\n", ret);
    > + goto exit_iio_free;
    > + }
    > +
    > + indio_dev->info =&isl29028_info;
    > + indio_dev->channels = isl29028_channels;
    > + indio_dev->num_channels = ARRAY_SIZE(isl29028_channels);
    > + indio_dev->name = id->name;
    > + indio_dev->dev.parent =&client->dev;
    > + indio_dev->modes = INDIO_DIRECT_MODE;
    > + ret = iio_device_register(indio_dev);
    > + if (ret< 0) {
    > + dev_err(chip->dev, "iio registration fails with error %d\n",
    > + ret);
    > + goto exit_iio_free;
    > + }
    > + return 0;
    > +
    > +exit_iio_free:
    > + iio_free_device(indio_dev);
    > + return ret;
    > +}
    > +
    > +static int __devexit isl29028_remove(struct i2c_client *client)
    > +{
    > + struct iio_dev *indio_dev = i2c_get_clientdata(client);
    > +
    > + iio_device_unregister(indio_dev);
    > + iio_free_device(indio_dev);
    > + return 0;
    > +}
    > +
    > +static const struct i2c_device_id isl29028_id[] = {
    > + {"isl29028", 0},
    > + {}
    > +};
    > +MODULE_DEVICE_TABLE(i2c, isl29028_id);
    > +
    > +static const struct of_device_id isl29028_of_match[] = {
    > + { .compatible = "isl,isl29028", },
    > + { },
    > +};
    > +MODULE_DEVICE_TABLE(of, isl29028_of_match);
    > +
    > +static struct i2c_driver isl29028_driver = {
    > + .class = I2C_CLASS_HWMON,
    > + .driver = {
    > + .name = "isl29028",
    > + .owner = THIS_MODULE,
    > + .of_match_table = isl29028_of_match,
    > + },
    > + .probe = isl29028_probe,
    > + .remove = __devexit_p(isl29028_remove),
    > + .id_table = isl29028_id,
    > +};
    > +
    > +module_i2c_driver(isl29028_driver);
    > +
    > +MODULE_DESCRIPTION("ISL29028 Ambient Light and Proximity Sensor driver");
    > +MODULE_LICENSE("GPL v2");
    > +MODULE_AUTHOR("Laxman Dewangan<ldewangan@nvidia.com>");



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