- 根目录:
- drivers
- staging
- iio
- adc
- adt7410.c
/*
* ADT7410 digital temperature sensor driver supporting ADT7410
*
* Copyright 2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/list.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include "../iio.h"
#include "../sysfs.h"
#include "../events.h"
/*
* ADT7410 registers definition
*/
#define ADT7410_TEMPERATURE 0
#define ADT7410_STATUS 2
#define ADT7410_CONFIG 3
#define ADT7410_T_ALARM_HIGH 4
#define ADT7410_T_ALARM_LOW 6
#define ADT7410_T_CRIT 8
#define ADT7410_T_HYST 0xA
#define ADT7410_ID 0xB
#define ADT7410_RESET 0x2F
/*
* ADT7410 status
*/
#define ADT7410_STAT_T_LOW 0x10
#define ADT7410_STAT_T_HIGH 0x20
#define ADT7410_STAT_T_CRIT 0x40
#define ADT7410_STAT_NOT_RDY 0x80
/*
* ADT7410 config
*/
#define ADT7410_FAULT_QUEUE_MASK 0x3
#define ADT7410_CT_POLARITY 0x4
#define ADT7410_INT_POLARITY 0x8
#define ADT7410_EVENT_MODE 0x10
#define ADT7410_MODE_MASK 0x60
#define ADT7410_ONESHOT 0x20
#define ADT7410_SPS 0x40
#define ADT7410_PD 0x60
#define ADT7410_RESOLUTION 0x80
/*
* ADT7410 masks
*/
#define ADT7410_T16_VALUE_SIGN 0x8000
#define ADT7410_T16_VALUE_FLOAT_OFFSET 7
#define ADT7410_T16_VALUE_FLOAT_MASK 0x7F
#define ADT7410_T13_VALUE_SIGN 0x1000
#define ADT7410_T13_VALUE_OFFSET 3
#define ADT7410_T13_VALUE_FLOAT_OFFSET 4
#define ADT7410_T13_VALUE_FLOAT_MASK 0xF
#define ADT7410_T_HYST_MASK 0xF
#define ADT7410_DEVICE_ID_MASK 0xF
#define ADT7410_MANUFACTORY_ID_MASK 0xF0
#define ADT7410_MANUFACTORY_ID_OFFSET 4
#define ADT7410_IRQS 2
/*
* struct adt7410_chip_info - chip specifc information
*/
struct adt7410_chip_info {
struct i2c_client *client;
u8 config;
};
/*
* adt7410 register access by I2C
*/
static int adt7410_i2c_read_word(struct adt7410_chip_info *chip, u8 reg, u16 *data)
{
struct i2c_client *client = chip->client;
int ret = 0;
ret = i2c_smbus_read_word_data(client, reg);
if (ret < 0) {
dev_err(&client->dev, "I2C read error\n");
return ret;
}
*data = swab16((u16)ret);
return 0;
}
static int adt7410_i2c_write_word(struct adt7410_chip_info *chip, u8 reg, u16 data)
{
struct i2c_client *client = chip->client;
int ret = 0;
ret = i2c_smbus_write_word_data(client, reg, swab16(data));
if (ret < 0)
dev_err(&client->dev, "I2C write error\n");
return ret;
}
static int adt7410_i2c_read_byte(struct adt7410_chip_info *chip, u8 reg, u8 *data)
{
struct i2c_client *client = chip->client;
int ret = 0;
ret = i2c_smbus_read_byte_data(client, reg);
if (ret < 0) {
dev_err(&client->dev, "I2C read error\n");
return ret;
}
*data = (u8)ret;
return 0;
}
static int adt7410_i2c_write_byte(struct adt7410_chip_info *chip, u8 reg, u8 data)
{
struct i2c_client *client = chip->client;
int ret = 0;
ret = i2c_smbus_write_byte_data(client, reg, data);
if (ret < 0)
dev_err(&client->dev, "I2C write error\n");
return ret;
}
static ssize_t adt7410_show_mode(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
u8 config;
config = chip->config & ADT7410_MODE_MASK;
switch (config) {
case ADT7410_PD:
return sprintf(buf, "power-down\n");
case ADT7410_ONESHOT:
return sprintf(buf, "one-shot\n");
case ADT7410_SPS:
return sprintf(buf, "sps\n");
default:
return sprintf(buf, "full\n");
}
}
static ssize_t adt7410_store_mode(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
u16 config;
int ret;
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret)
return -EIO;
config = chip->config & (~ADT7410_MODE_MASK);
if (strcmp(buf, "power-down"))
config |= ADT7410_PD;
else if (strcmp(buf, "one-shot"))
config |= ADT7410_ONESHOT;
else if (strcmp(buf, "sps"))
config |= ADT7410_SPS;
ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config);
if (ret)
return -EIO;
chip->config = config;
return ret;
}
static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
adt7410_show_mode,
adt7410_store_mode,
0);
static ssize_t adt7410_show_available_modes(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "full\none-shot\nsps\npower-down\n");
}
static IIO_DEVICE_ATTR(available_modes, S_IRUGO, adt7410_show_available_modes, NULL, 0);
static ssize_t adt7410_show_resolution(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
int ret;
int bits;
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret)
return -EIO;
if (chip->config & ADT7410_RESOLUTION)
bits = 16;
else
bits = 13;
return sprintf(buf, "%d bits\n", bits);
}
static ssize_t adt7410_store_resolution(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
unsigned long data;
u16 config;
int ret;
ret = strict_strtoul(buf, 10, &data);
if (ret)
return -EINVAL;
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret)
return -EIO;
config = chip->config & (~ADT7410_RESOLUTION);
if (data)
config |= ADT7410_RESOLUTION;
ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config);
if (ret)
return -EIO;
chip->config = config;
return ret;
}
static IIO_DEVICE_ATTR(resolution, S_IRUGO | S_IWUSR,
adt7410_show_resolution,
adt7410_store_resolution,
0);
static ssize_t adt7410_show_id(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
u8 id;
int ret;
ret = adt7410_i2c_read_byte(chip, ADT7410_ID, &id);
if (ret)
return -EIO;
return sprintf(buf, "device id: 0x%x\nmanufactory id: 0x%x\n",
id & ADT7410_DEVICE_ID_MASK,
(id & ADT7410_MANUFACTORY_ID_MASK) >> ADT7410_MANUFACTORY_ID_OFFSET);
}
static IIO_DEVICE_ATTR(id, S_IRUGO | S_IWUSR,
adt7410_show_id,
NULL,
0);
static ssize_t adt7410_convert_temperature(struct adt7410_chip_info *chip,
u16 data, char *buf)
{
char sign = ' ';
if (chip->config & ADT7410_RESOLUTION) {
if (data & ADT7410_T16_VALUE_SIGN) {
/* convert supplement to positive value */
data = (u16)((ADT7410_T16_VALUE_SIGN << 1) - (u32)data);
sign = '-';
}
return sprintf(buf, "%c%d.%.7d\n", sign,
(data >> ADT7410_T16_VALUE_FLOAT_OFFSET),
(data & ADT7410_T16_VALUE_FLOAT_MASK) * 78125);
} else {
if (data & ADT7410_T13_VALUE_SIGN) {
/* convert supplement to positive value */
data >>= ADT7410_T13_VALUE_OFFSET;
data = (ADT7410_T13_VALUE_SIGN << 1) - data;
sign = '-';
}
return sprintf(buf, "%c%d.%.4d\n", sign,
(data >> ADT7410_T13_VALUE_FLOAT_OFFSET),
(data & ADT7410_T13_VALUE_FLOAT_MASK) * 625);
}
}
static ssize_t adt7410_show_value(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
u8 status;
u16 data;
int ret, i = 0;
do {
ret = adt7410_i2c_read_byte(chip, ADT7410_STATUS, &status);
if (ret)
return -EIO;
i++;
if (i == 10000)
return -EIO;
} while (status & ADT7410_STAT_NOT_RDY);
ret = adt7410_i2c_read_word(chip, ADT7410_TEMPERATURE, &data);
if (ret)
return -EIO;
return adt7410_convert_temperature(chip, data, buf);
}
static IIO_DEVICE_ATTR(value, S_IRUGO, adt7410_show_value, NULL, 0);
static struct attribute *adt7410_attributes[] = {
&iio_dev_attr_available_modes.dev_attr.attr,
&iio_dev_attr_mode.dev_attr.attr,
&iio_dev_attr_resolution.dev_attr.attr,
&iio_dev_attr_id.dev_attr.attr,
&iio_dev_attr_value.dev_attr.attr,
NULL,
};
static const struct attribute_group adt7410_attribute_group = {
.attrs = adt7410_attributes,
};
static irqreturn_t adt7410_event_handler(int irq, void *private)
{
struct iio_dev *indio_dev = private;
struct adt7410_chip_info *chip = iio_priv(indio_dev);
s64 timestamp = iio_get_time_ns();
u8 status;
if (adt7410_i2c_read_byte(chip, ADT7410_STATUS, &status))
return IRQ_HANDLED;
if (status & ADT7410_STAT_T_HIGH)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
timestamp);
if (status & ADT7410_STAT_T_LOW)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
timestamp);
if (status & ADT7410_STAT_T_CRIT)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
timestamp);
return IRQ_HANDLED;
}
static ssize_t adt7410_show_event_mode(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
int ret;
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret)
return -EIO;
if (chip->config & ADT7410_EVENT_MODE)
return sprintf(buf, "interrupt\n");
else
return sprintf(buf, "comparator\n");
}
static ssize_t adt7410_set_event_mode(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
u16 config;
int ret;
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret)
return -EIO;
config = chip->config &= ~ADT7410_EVENT_MODE;
if (strcmp(buf, "comparator") != 0)
config |= ADT7410_EVENT_MODE;
ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config);
if (ret)
return -EIO;
chip->config = config;
return ret;
}
static ssize_t adt7410_show_available_event_modes(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "comparator\ninterrupt\n");
}
static ssize_t adt7410_show_fault_queue(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
int ret;
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret)
return -EIO;
return sprintf(buf, "%d\n", chip->config & ADT7410_FAULT_QUEUE_MASK);
}
static ssize_t adt7410_set_fault_queue(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
unsigned long data;
int ret;
u8 config;
ret = strict_strtoul(buf, 10, &data);
if (ret || data > 3)
return -EINVAL;
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret)
return -EIO;
config = chip->config & ~ADT7410_FAULT_QUEUE_MASK;
config |= data;
ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, config);
if (ret)
return -EIO;
chip->config = config;
return ret;
}
static inline ssize_t adt7410_show_t_bound(struct device *dev,
struct device_attribute *attr,
u8 bound_reg,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
u16 data;
int ret;
ret = adt7410_i2c_read_word(chip, bound_reg, &data);
if (ret)
return -EIO;
return adt7410_convert_temperature(chip, data, buf);
}
static inline ssize_t adt7410_set_t_bound(struct device *dev,
struct device_attribute *attr,
u8 bound_reg,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
long tmp1, tmp2;
u16 data;
char *pos;
int ret;
pos = strchr(buf, '.');
ret = strict_strtol(buf, 10, &tmp1);
if (ret || tmp1 > 127 || tmp1 < -128)
return -EINVAL;
if (pos) {
len = strlen(pos);
if (chip->config & ADT7410_RESOLUTION) {
if (len > ADT7410_T16_VALUE_FLOAT_OFFSET)
len = ADT7410_T16_VALUE_FLOAT_OFFSET;
pos[len] = 0;
ret = strict_strtol(pos, 10, &tmp2);
if (!ret)
tmp2 = (tmp2 / 78125) * 78125;
} else {
if (len > ADT7410_T13_VALUE_FLOAT_OFFSET)
len = ADT7410_T13_VALUE_FLOAT_OFFSET;
pos[len] = 0;
ret = strict_strtol(pos, 10, &tmp2);
if (!ret)
tmp2 = (tmp2 / 625) * 625;
}
}
if (tmp1 < 0)
data = (u16)(-tmp1);
else
data = (u16)tmp1;
if (chip->config & ADT7410_RESOLUTION) {
data = (data << ADT7410_T16_VALUE_FLOAT_OFFSET) |
(tmp2 & ADT7410_T16_VALUE_FLOAT_MASK);
if (tmp1 < 0)
/* convert positive value to supplyment */
data = (u16)((ADT7410_T16_VALUE_SIGN << 1) - (u32)data);
} else {
data = (data << ADT7410_T13_VALUE_FLOAT_OFFSET) |
(tmp2 & ADT7410_T13_VALUE_FLOAT_MASK);
if (tmp1 < 0)
/* convert positive value to supplyment */
data = (ADT7410_T13_VALUE_SIGN << 1) - data;
data <<= ADT7410_T13_VALUE_OFFSET;
}
ret = adt7410_i2c_write_word(chip, bound_reg, data);
if (ret)
return -EIO;
return ret;
}
static ssize_t adt7410_show_t_alarm_high(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return adt7410_show_t_bound(dev, attr,
ADT7410_T_ALARM_HIGH, buf);
}
static inline ssize_t adt7410_set_t_alarm_high(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
return adt7410_set_t_bound(dev, attr,
ADT7410_T_ALARM_HIGH, buf, len);
}
static ssize_t adt7410_show_t_alarm_low(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return adt7410_show_t_bound(dev, attr,
ADT7410_T_ALARM_LOW, buf);
}
static inline ssize_t adt7410_set_t_alarm_low(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
return adt7410_set_t_bound(dev, attr,
ADT7410_T_ALARM_LOW, buf, len);
}
static ssize_t adt7410_show_t_crit(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return adt7410_show_t_bound(dev, attr,
ADT7410_T_CRIT, buf);
}
static inline ssize_t adt7410_set_t_crit(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
return adt7410_set_t_bound(dev, attr,
ADT7410_T_CRIT, buf, len);
}
static ssize_t adt7410_show_t_hyst(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
int ret;
u8 t_hyst;
ret = adt7410_i2c_read_byte(chip, ADT7410_T_HYST, &t_hyst);
if (ret)
return -EIO;
return sprintf(buf, "%d\n", t_hyst & ADT7410_T_HYST_MASK);
}
static inline ssize_t adt7410_set_t_hyst(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct adt7410_chip_info *chip = iio_priv(dev_info);
int ret;
unsigned long data;
u8 t_hyst;
ret = strict_strtol(buf, 10, &data);
if (ret || data > ADT7410_T_HYST_MASK)
return -EINVAL;
t_hyst = (u8)data;
ret = adt7410_i2c_write_byte(chip, ADT7410_T_HYST, t_hyst);
if (ret)
return -EIO;
return ret;
}
static IIO_DEVICE_ATTR(event_mode,
S_IRUGO | S_IWUSR,
adt7410_show_event_mode, adt7410_set_event_mode, 0);
static IIO_DEVICE_ATTR(available_event_modes,
S_IRUGO,
adt7410_show_available_event_modes, NULL, 0);
static IIO_DEVICE_ATTR(fault_queue,
S_IRUGO | S_IWUSR,
adt7410_show_fault_queue, adt7410_set_fault_queue, 0);
static IIO_DEVICE_ATTR(t_alarm_high,
S_IRUGO | S_IWUSR,
adt7410_show_t_alarm_high, adt7410_set_t_alarm_high, 0);
static IIO_DEVICE_ATTR(t_alarm_low,
S_IRUGO | S_IWUSR,
adt7410_show_t_alarm_low, adt7410_set_t_alarm_low, 0);
static IIO_DEVICE_ATTR(t_crit,
S_IRUGO | S_IWUSR,
adt7410_show_t_crit, adt7410_set_t_crit, 0);
static IIO_DEVICE_ATTR(t_hyst,
S_IRUGO | S_IWUSR,
adt7410_show_t_hyst, adt7410_set_t_hyst, 0);
static struct attribute *adt7410_event_int_attributes[] = {
&iio_dev_attr_event_mode.dev_attr.attr,
&iio_dev_attr_available_event_modes.dev_attr.attr,
&iio_dev_attr_fault_queue.dev_attr.attr,
&iio_dev_attr_t_alarm_high.dev_attr.attr,
&iio_dev_attr_t_alarm_low.dev_attr.attr,
&iio_dev_attr_t_hyst.dev_attr.attr,
NULL,
};
static struct attribute *adt7410_event_ct_attributes[] = {
&iio_dev_attr_event_mode.dev_attr.attr,
&iio_dev_attr_available_event_modes.dev_attr.attr,
&iio_dev_attr_fault_queue.dev_attr.attr,
&iio_dev_attr_t_crit.dev_attr.attr,
&iio_dev_attr_t_hyst.dev_attr.attr,
NULL,
};
static struct attribute_group adt7410_event_attribute_group[ADT7410_IRQS] = {
{
.attrs = adt7410_event_int_attributes,
.name = "events",
}, {
.attrs = adt7410_event_ct_attributes,
.name = "events",
}
};
static const struct iio_info adt7410_info = {
.attrs = &adt7410_attribute_group,
.event_attrs = adt7410_event_attribute_group,
.driver_module = THIS_MODULE,
};
/*
* device probe and remove
*/
static int __devinit adt7410_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adt7410_chip_info *chip;
struct iio_dev *indio_dev;
int ret = 0;
unsigned long *adt7410_platform_data = client->dev.platform_data;
indio_dev = iio_allocate_device(sizeof(*chip));
if (indio_dev == NULL) {
ret = -ENOMEM;
goto error_ret;
}
chip = iio_priv(indio_dev);
/* this is only used for device removal purposes */
i2c_set_clientdata(client, indio_dev);
chip->client = client;
indio_dev->name = id->name;
indio_dev->dev.parent = &client->dev;
indio_dev->info = &adt7410_info;
indio_dev->modes = INDIO_DIRECT_MODE;
/* CT critcal temperature event. line 0 */
if (client->irq) {
ret = request_threaded_irq(client->irq,
NULL,
&adt7410_event_handler,
IRQF_TRIGGER_LOW,
id->name,
indio_dev);
if (ret)
goto error_free_dev;
}
/* INT bound temperature alarm event. line 1 */
if (adt7410_platform_data[0]) {
ret = request_threaded_irq(adt7410_platform_data[0],
NULL,
&adt7410_event_handler,
adt7410_platform_data[1],
id->name,
indio_dev);
if (ret)
goto error_unreg_ct_irq;
}
if (client->irq && adt7410_platform_data[0]) {
ret = adt7410_i2c_read_byte(chip, ADT7410_CONFIG, &chip->config);
if (ret) {
ret = -EIO;
goto error_unreg_int_irq;
}
/* set irq polarity low level */
chip->config &= ~ADT7410_CT_POLARITY;
if (adt7410_platform_data[1] & IRQF_TRIGGER_HIGH)
chip->config |= ADT7410_INT_POLARITY;
else
chip->config &= ~ADT7410_INT_POLARITY;
ret = adt7410_i2c_write_byte(chip, ADT7410_CONFIG, chip->config);
if (ret) {
ret = -EIO;
goto error_unreg_int_irq;
}
}
ret = iio_device_register(indio_dev);
if (ret)
goto error_unreg_int_irq;
dev_info(&client->dev, "%s temperature sensor registered.\n",
id->name);
return 0;
error_unreg_int_irq:
free_irq(adt7410_platform_data[0], indio_dev);
error_unreg_ct_irq:
free_irq(client->irq, indio_dev);
error_free_dev:
iio_free_device(indio_dev);
error_ret:
return ret;
}
static int __devexit adt7410_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
unsigned long *adt7410_platform_data = client->dev.platform_data;
iio_device_unregister(indio_dev);
if (adt7410_platform_data[0])
free_irq(adt7410_platform_data[0], indio_dev);
if (client->irq)
free_irq(client->irq, indio_dev);
iio_free_device(indio_dev);
return 0;
}
static const struct i2c_device_id adt7410_id[] = {
{ "adt7410", 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, adt7410_id);
static struct i2c_driver adt7410_driver = {
.driver = {
.name = "adt7410",
},
.probe = adt7410_probe,
.remove = __devexit_p(adt7410_remove),
.id_table = adt7410_id,
};
module_i2c_driver(adt7410_driver);
MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
MODULE_DESCRIPTION("Analog Devices ADT7410 digital"
" temperature sensor driver");
MODULE_LICENSE("GPL v2");