[mirror_ubuntu-jammy-kernel.git] / drivers / hwmon / ad7418.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * An hwmon driver for the Analog Devices AD7416/17/18
 * Copyright (C) 2006-07 Tower Technologies
 *
 * Author: Alessandro Zummo <a.zummo@towertech.it>
 *
 * Based on lm75.c
 * Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl>
 */

#include <linux/module.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/delay.h>
#include <linux/slab.h>

#include "lm75.h"

#define DRV_VERSION "0.4"

enum chips { ad7416, ad7417, ad7418 };

/* AD7418 registers */
#define AD7418_REG_TEMP_IN	0x00
#define AD7418_REG_CONF		0x01
#define AD7418_REG_TEMP_HYST	0x02
#define AD7418_REG_TEMP_OS	0x03
#define AD7418_REG_ADC		0x04
#define AD7418_REG_CONF2	0x05

#define AD7418_REG_ADC_CH(x)	((x) << 5)
#define AD7418_CH_TEMP		AD7418_REG_ADC_CH(0)

static const u8 AD7418_REG_TEMP[] = { AD7418_REG_TEMP_IN,
					AD7418_REG_TEMP_HYST,
					AD7418_REG_TEMP_OS };

struct ad7418_data {
	struct i2c_client	*client;
	enum chips		type;
	struct mutex		lock;
	int			adc_max;	/* number of ADC channels */
	char			valid;
	unsigned long		last_updated;	/* In jiffies */
	s16			temp[3];	/* Register values */
	u16			in[4];
};

static int ad7418_update_device(struct device *dev)
{
	struct ad7418_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	s32 val;

	mutex_lock(&data->lock);

	if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
		|| !data->valid) {
		u8 cfg;
		int i, ch;

		/* read config register and clear channel bits */
		val = i2c_smbus_read_byte_data(client, AD7418_REG_CONF);
		if (val < 0)
			goto abort;

		cfg = val;
		cfg &= 0x1F;

		val = i2c_smbus_write_byte_data(client, AD7418_REG_CONF,
						cfg | AD7418_CH_TEMP);
		if (val < 0)
			goto abort;

		udelay(30);

		for (i = 0; i < 3; i++) {
			val = i2c_smbus_read_word_swapped(client,
							  AD7418_REG_TEMP[i]);
			if (val < 0)
				goto abort;

			data->temp[i] = val;
		}

		for (i = 0, ch = 4; i < data->adc_max; i++, ch--) {
			val = i2c_smbus_write_byte_data(client, AD7418_REG_CONF,
					cfg | AD7418_REG_ADC_CH(ch));
			if (val < 0)
				goto abort;

			udelay(15);
			val = i2c_smbus_read_word_swapped(client,
							  AD7418_REG_ADC);
			if (val < 0)
				goto abort;

			data->in[data->adc_max - 1 - i] = val;
		}

		/* restore old configuration value */
		val = i2c_smbus_write_word_swapped(client, AD7418_REG_CONF,
						   cfg);
		if (val < 0)
			goto abort;

		data->last_updated = jiffies;
		data->valid = 1;
	}

	mutex_unlock(&data->lock);
	return 0;

abort:
	data->valid = 0;
	mutex_unlock(&data->lock);
	return val;
}

static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
			 char *buf)
{
	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct ad7418_data *data = dev_get_drvdata(dev);
	int ret;

	ret = ad7418_update_device(dev);
	if (ret < 0)
		return ret;

	return sprintf(buf, "%d\n",
		LM75_TEMP_FROM_REG(data->temp[attr->index]));
}

static ssize_t adc_show(struct device *dev, struct device_attribute *devattr,
			char *buf)
{
	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct ad7418_data *data = dev_get_drvdata(dev);
	int ret;

	ret = ad7418_update_device(dev);
	if (ret < 0)
		return ret;

	return sprintf(buf, "%d\n",
		((data->in[attr->index] >> 6) * 2500 + 512) / 1024);
}

static ssize_t temp_store(struct device *dev,
			  struct device_attribute *devattr, const char *buf,
			  size_t count)
{
	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct ad7418_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	long temp;
	int ret = kstrtol(buf, 10, &temp);

	if (ret < 0)
		return ret;

	mutex_lock(&data->lock);
	data->temp[attr->index] = LM75_TEMP_TO_REG(temp);
	i2c_smbus_write_word_swapped(client,
				     AD7418_REG_TEMP[attr->index],
				     data->temp[attr->index]);
	mutex_unlock(&data->lock);
	return count;
}

static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp, 1);
static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, 2);

static SENSOR_DEVICE_ATTR_RO(in1_input, adc, 0);
static SENSOR_DEVICE_ATTR_RO(in2_input, adc, 1);
static SENSOR_DEVICE_ATTR_RO(in3_input, adc, 2);
static SENSOR_DEVICE_ATTR_RO(in4_input, adc, 3);

static struct attribute *ad7416_attrs[] = {
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	NULL
};
ATTRIBUTE_GROUPS(ad7416);

static struct attribute *ad7417_attrs[] = {
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_in1_input.dev_attr.attr,
	&sensor_dev_attr_in2_input.dev_attr.attr,
	&sensor_dev_attr_in3_input.dev_attr.attr,
	&sensor_dev_attr_in4_input.dev_attr.attr,
	NULL
};
ATTRIBUTE_GROUPS(ad7417);

static struct attribute *ad7418_attrs[] = {
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_in1_input.dev_attr.attr,
	NULL
};
ATTRIBUTE_GROUPS(ad7418);

static void ad7418_init_client(struct i2c_client *client)
{
	struct ad7418_data *data = i2c_get_clientdata(client);

	int reg = i2c_smbus_read_byte_data(client, AD7418_REG_CONF);
	if (reg < 0) {
		dev_err(&client->dev, "cannot read configuration register\n");
	} else {
		dev_info(&client->dev, "configuring for mode 1\n");
		i2c_smbus_write_byte_data(client, AD7418_REG_CONF, reg & 0xfe);

		if (data->type == ad7417 || data->type == ad7418)
			i2c_smbus_write_byte_data(client,
						AD7418_REG_CONF2, 0x00);
	}
}

static const struct i2c_device_id ad7418_id[];

static int ad7418_probe(struct i2c_client *client)
{
	struct device *dev = &client->dev;
	struct i2c_adapter *adapter = client->adapter;
	struct ad7418_data *data;
	struct device *hwmon_dev;
	const struct attribute_group **attr_groups = NULL;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
					I2C_FUNC_SMBUS_WORD_DATA))
		return -EOPNOTSUPP;

	data = devm_kzalloc(dev, sizeof(struct ad7418_data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	i2c_set_clientdata(client, data);

	mutex_init(&data->lock);
	data->client = client;
	if (dev->of_node)
		data->type = (enum chips)of_device_get_match_data(dev);
	else
		data->type = i2c_match_id(ad7418_id, client)->driver_data;

	switch (data->type) {
	case ad7416:
		data->adc_max = 0;
		attr_groups = ad7416_groups;
		break;

	case ad7417:
		data->adc_max = 4;
		attr_groups = ad7417_groups;
		break;

	case ad7418:
		data->adc_max = 1;
		attr_groups = ad7418_groups;
		break;
	}

	dev_info(dev, "%s chip found\n", client->name);

	/* Initialize the AD7418 chip */
	ad7418_init_client(client);

	hwmon_dev = devm_hwmon_device_register_with_groups(dev,
							   client->name,
							   data, attr_groups);
	return PTR_ERR_OR_ZERO(hwmon_dev);
}

static const struct i2c_device_id ad7418_id[] = {
	{ "ad7416", ad7416 },
	{ "ad7417", ad7417 },
	{ "ad7418", ad7418 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ad7418_id);

static const struct of_device_id ad7418_dt_ids[] = {
	{ .compatible = "adi,ad7416", .data = (void *)ad7416, },
	{ .compatible = "adi,ad7417", .data = (void *)ad7417, },
	{ .compatible = "adi,ad7418", .data = (void *)ad7418, },
	{ }
};
MODULE_DEVICE_TABLE(of, ad7418_dt_ids);

static struct i2c_driver ad7418_driver = {
	.driver = {
		.name	= "ad7418",
		.of_match_table = ad7418_dt_ids,
	},
	.probe_new	= ad7418_probe,
	.id_table	= ad7418_id,
};

module_i2c_driver(ad7418_driver);

MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
MODULE_DESCRIPTION("AD7416/17/18 driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
Commit	Line	Data
a10e763b	1	// SPDX-License-Identifier: GPL-2.0-only
2d8dd65f AZ	2	/*
	3	* An hwmon driver for the Analog Devices AD7416/17/18
	4	* Copyright (C) 2006-07 Tower Technologies
	5	*
	6	* Author: Alessandro Zummo <a.zummo@towertech.it>
	7	*
	8	* Based on lm75.c
	9	* Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl>
2d8dd65f AZ	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/jiffies.h>
	14	#include <linux/i2c.h>
	15	#include <linux/hwmon.h>
	16	#include <linux/hwmon-sysfs.h>
	17	#include <linux/err.h>
	18	#include <linux/mutex.h>
f4c2965e	19	#include <linux/of_device.h>
2d8dd65f	20	#include <linux/delay.h>
5a0e3ad6	21	#include <linux/slab.h>
2d8dd65f AZ	22
	23	#include "lm75.h"
	24
369932f6	25	#define DRV_VERSION "0.4"
2d8dd65f	26
369932f6	27	enum chips { ad7416, ad7417, ad7418 };
2d8dd65f AZ	28
	29	/* AD7418 registers */
	30	#define AD7418_REG_TEMP_IN 0x00
	31	#define AD7418_REG_CONF 0x01
	32	#define AD7418_REG_TEMP_HYST 0x02
	33	#define AD7418_REG_TEMP_OS 0x03
	34	#define AD7418_REG_ADC 0x04
	35	#define AD7418_REG_CONF2 0x05
	36
	37	#define AD7418_REG_ADC_CH(x) ((x) << 5)
	38	#define AD7418_CH_TEMP AD7418_REG_ADC_CH(0)
	39
	40	static const u8 AD7418_REG_TEMP[] = { AD7418_REG_TEMP_IN,
	41	AD7418_REG_TEMP_HYST,
	42	AD7418_REG_TEMP_OS };
	43
	44	struct ad7418_data {
337076f9	45	struct i2c_client *client;
2d8dd65f AZ	46	enum chips type;
	47	struct mutex lock;
	48	int adc_max; /* number of ADC channels */
	49	char valid;
	50	unsigned long last_updated; /* In jiffies */
	51	s16 temp[3]; /* Register values */
	52	u16 in[4];
	53	};
	54
45034e48	55	static int ad7418_update_device(struct device *dev)
2d8dd65f	56	{
337076f9 AL	57	struct ad7418_data *data = dev_get_drvdata(dev);
337076f9 AL	58	struct i2c_client *client = data->client;
45034e48	59	s32 val;
2d8dd65f AZ	60
	61	mutex_lock(&data->lock);
	62
	63	if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
	64	\|\| !data->valid) {
	65	u8 cfg;
	66	int i, ch;
	67
	68	/* read config register and clear channel bits */
45034e48 BM	69	val = i2c_smbus_read_byte_data(client, AD7418_REG_CONF);
	70	if (val < 0)
	71	goto abort;
	72
	73	cfg = val;
2d8dd65f AZ	74	cfg &= 0x1F;
2d8dd65f AZ	75
45034e48	76	val = i2c_smbus_write_byte_data(client, AD7418_REG_CONF,
2d8dd65f	77	cfg \| AD7418_CH_TEMP);
45034e48 BM	78	if (val < 0)
	79	goto abort;
	80
2d8dd65f AZ	81	udelay(30);
	82
	83	for (i = 0; i < 3; i++) {
45034e48 BM	84	val = i2c_smbus_read_word_swapped(client,
	85	AD7418_REG_TEMP[i]);
	86	if (val < 0)
	87	goto abort;
	88
	89	data->temp[i] = val;
2d8dd65f AZ	90	}
	91
	92	for (i = 0, ch = 4; i < data->adc_max; i++, ch--) {
45034e48	93	val = i2c_smbus_write_byte_data(client, AD7418_REG_CONF,
2d8dd65f	94	cfg \| AD7418_REG_ADC_CH(ch));
45034e48 BM	95	if (val < 0)
45034e48 BM	96	goto abort;
2d8dd65f AZ	97
2d8dd65f AZ	98	udelay(15);
45034e48 BM	99	val = i2c_smbus_read_word_swapped(client,
	100	AD7418_REG_ADC);
	101	if (val < 0)
	102	goto abort;
	103
	104	data->in[data->adc_max - 1 - i] = val;
2d8dd65f AZ	105	}
	106
	107	/* restore old configuration value */
45034e48 BM	108	val = i2c_smbus_write_word_swapped(client, AD7418_REG_CONF,
	109	cfg);
	110	if (val < 0)
	111	goto abort;
2d8dd65f AZ	112
	113	data->last_updated = jiffies;
	114	data->valid = 1;
	115	}
	116
	117	mutex_unlock(&data->lock);
45034e48	118	return 0;
2d8dd65f	119
45034e48 BM	120	abort:
	121	data->valid = 0;
	122	mutex_unlock(&data->lock);
	123	return val;
2d8dd65f AZ	124	}
2d8dd65f AZ	125
6fdc5d7f GR	126	static ssize_t temp_show(struct device dev, struct device_attribute devattr,
6fdc5d7f GR	127	char *buf)
2d8dd65f AZ	128	{
2d8dd65f AZ	129	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
45034e48 BM	130	struct ad7418_data *data = dev_get_drvdata(dev);
	131	int ret;
	132
	133	ret = ad7418_update_device(dev);
	134	if (ret < 0)
	135	return ret;
	136
2d8dd65f AZ	137	return sprintf(buf, "%d\n",
	138	LM75_TEMP_FROM_REG(data->temp[attr->index]));
	139	}
	140
6fdc5d7f	141	static ssize_t adc_show(struct device dev, struct device_attribute devattr,
2d8dd65f AZ	142	char *buf)
	143	{
	144	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
45034e48 BM	145	struct ad7418_data *data = dev_get_drvdata(dev);
	146	int ret;
	147
	148	ret = ad7418_update_device(dev);
	149	if (ret < 0)
	150	return ret;
2d8dd65f AZ	151
	152	return sprintf(buf, "%d\n",
	153	((data->in[attr->index] >> 6) * 2500 + 512) / 1024);
	154	}
	155
6fdc5d7f GR	156	static ssize_t temp_store(struct device *dev,
	157	struct device_attribute devattr, const char buf,
	158	size_t count)
2d8dd65f AZ	159	{
2d8dd65f AZ	160	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
337076f9 AL	161	struct ad7418_data *data = dev_get_drvdata(dev);
337076f9 AL	162	struct i2c_client *client = data->client;
e91aef22 FM	163	long temp;
	164	int ret = kstrtol(buf, 10, &temp);
	165
	166	if (ret < 0)
	167	return ret;
2d8dd65f AZ	168
	169	mutex_lock(&data->lock);
	170	data->temp[attr->index] = LM75_TEMP_TO_REG(temp);
90f4102c JD	171	i2c_smbus_write_word_swapped(client,
	172	AD7418_REG_TEMP[attr->index],
	173	data->temp[attr->index]);
2d8dd65f AZ	174	mutex_unlock(&data->lock);
	175	return count;
	176	}
	177
6fdc5d7f GR	178	static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
	179	static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp, 1);
	180	static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, 2);
2d8dd65f	181
6fdc5d7f GR	182	static SENSOR_DEVICE_ATTR_RO(in1_input, adc, 0);
	183	static SENSOR_DEVICE_ATTR_RO(in2_input, adc, 1);
	184	static SENSOR_DEVICE_ATTR_RO(in3_input, adc, 2);
	185	static SENSOR_DEVICE_ATTR_RO(in4_input, adc, 3);
2d8dd65f	186
337076f9	187	static struct attribute *ad7416_attrs[] = {
2d8dd65f AZ	188	&sensor_dev_attr_temp1_max.dev_attr.attr,
	189	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
	190	&sensor_dev_attr_temp1_input.dev_attr.attr,
	191	NULL
	192	};
337076f9	193	ATTRIBUTE_GROUPS(ad7416);
2d8dd65f	194
337076f9	195	static struct attribute *ad7417_attrs[] = {
2d8dd65f AZ	196	&sensor_dev_attr_temp1_max.dev_attr.attr,
	197	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
	198	&sensor_dev_attr_temp1_input.dev_attr.attr,
	199	&sensor_dev_attr_in1_input.dev_attr.attr,
	200	&sensor_dev_attr_in2_input.dev_attr.attr,
	201	&sensor_dev_attr_in3_input.dev_attr.attr,
	202	&sensor_dev_attr_in4_input.dev_attr.attr,
	203	NULL
	204	};
337076f9	205	ATTRIBUTE_GROUPS(ad7417);
2d8dd65f	206
337076f9	207	static struct attribute *ad7418_attrs[] = {
2d8dd65f AZ	208	&sensor_dev_attr_temp1_max.dev_attr.attr,
	209	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
	210	&sensor_dev_attr_temp1_input.dev_attr.attr,
	211	&sensor_dev_attr_in1_input.dev_attr.attr,
	212	NULL
	213	};
337076f9	214	ATTRIBUTE_GROUPS(ad7418);
2d8dd65f	215
991763a9 AL	216	static void ad7418_init_client(struct i2c_client *client)
	217	{
	218	struct ad7418_data *data = i2c_get_clientdata(client);
	219
	220	int reg = i2c_smbus_read_byte_data(client, AD7418_REG_CONF);
	221	if (reg < 0) {
	222	dev_err(&client->dev, "cannot read configuration register\n");
	223	} else {
	224	dev_info(&client->dev, "configuring for mode 1\n");
	225	i2c_smbus_write_byte_data(client, AD7418_REG_CONF, reg & 0xfe);
	226
	227	if (data->type == ad7417 \|\| data->type == ad7418)
	228	i2c_smbus_write_byte_data(client,
	229	AD7418_REG_CONF2, 0x00);
	230	}
	231	}
	232
67487038 SK	233	static const struct i2c_device_id ad7418_id[];
	234
	235	static int ad7418_probe(struct i2c_client *client)
2d8dd65f	236	{
337076f9	237	struct device *dev = &client->dev;
369932f6	238	struct i2c_adapter *adapter = client->adapter;
2d8dd65f	239	struct ad7418_data *data;
337076f9 AL	240	struct device *hwmon_dev;
337076f9 AL	241	const struct attribute_group **attr_groups = NULL;
2d8dd65f AZ	242
2d8dd65f AZ	243	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA \|
d5282926 GR	244	I2C_FUNC_SMBUS_WORD_DATA))
d5282926 GR	245	return -EOPNOTSUPP;
2d8dd65f	246
337076f9	247	data = devm_kzalloc(dev, sizeof(struct ad7418_data), GFP_KERNEL);
d5282926 GR	248	if (!data)
d5282926 GR	249	return -ENOMEM;
2d8dd65f	250
2d8dd65f AZ	251	i2c_set_clientdata(client, data);
	252
	253	mutex_init(&data->lock);
337076f9	254	data->client = client;
f4c2965e LW	255	if (dev->of_node)
	256	data->type = (enum chips)of_device_get_match_data(dev);
	257	else
67487038	258	data->type = i2c_match_id(ad7418_id, client)->driver_data;
2d8dd65f AZ	259
2d8dd65f AZ	260	switch (data->type) {
2d8dd65f AZ	261	case ad7416:
2d8dd65f AZ	262	data->adc_max = 0;
337076f9	263	attr_groups = ad7416_groups;
2d8dd65f AZ	264	break;
	265
	266	case ad7417:
	267	data->adc_max = 4;
337076f9	268	attr_groups = ad7417_groups;
2d8dd65f AZ	269	break;
	270
	271	case ad7418:
	272	data->adc_max = 1;
337076f9	273	attr_groups = ad7418_groups;
2d8dd65f AZ	274	break;
	275	}
	276
337076f9	277	dev_info(dev, "%s chip found\n", client->name);
2d8dd65f AZ	278
	279	/* Initialize the AD7418 chip */
	280	ad7418_init_client(client);
	281
337076f9 AL	282	hwmon_dev = devm_hwmon_device_register_with_groups(dev,
	283	client->name,
	284	data, attr_groups);
	285	return PTR_ERR_OR_ZERO(hwmon_dev);
2d8dd65f AZ	286	}
2d8dd65f AZ	287
991763a9 AL	288	static const struct i2c_device_id ad7418_id[] = {
	289	{ "ad7416", ad7416 },
	290	{ "ad7417", ad7417 },
	291	{ "ad7418", ad7418 },
	292	{ }
	293	};
	294	MODULE_DEVICE_TABLE(i2c, ad7418_id);
	295
f4c2965e LW	296	static const struct of_device_id ad7418_dt_ids[] = {
	297	{ .compatible = "adi,ad7416", .data = (void *)ad7416, },
	298	{ .compatible = "adi,ad7417", .data = (void *)ad7417, },
	299	{ .compatible = "adi,ad7418", .data = (void *)ad7418, },
	300	{ }
	301	};
	302	MODULE_DEVICE_TABLE(of, ad7418_dt_ids);
	303
991763a9 AL	304	static struct i2c_driver ad7418_driver = {
	305	.driver = {
	306	.name = "ad7418",
f4c2965e	307	.of_match_table = ad7418_dt_ids,
991763a9	308	},
67487038	309	.probe_new = ad7418_probe,
991763a9 AL	310	.id_table = ad7418_id,
	311	};
	312
f0967eea	313	module_i2c_driver(ad7418_driver);
2d8dd65f AZ	314
	315	MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
	316	MODULE_DESCRIPTION("AD7416/17/18 driver");
	317	MODULE_LICENSE("GPL");
	318	MODULE_VERSION(DRV_VERSION);