[net-next-2.6.git] / drivers / hwmon / thmc50.c

/*
    thmc50.c - Part of lm_sensors, Linux kernel modules for hardware
             monitoring
    Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl>
    Based on 2.4 driver by Frodo Looijaard <frodol@dds.nl> and
    Philip Edelbrock <phil@netroedge.com>

    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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

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

MODULE_LICENSE("GPL");

/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };

/* Insmod parameters */
enum chips { thmc50, adm1022 };

static unsigned short adm1022_temp3[16];
static unsigned int adm1022_temp3_num;
module_param_array(adm1022_temp3, ushort, &adm1022_temp3_num, 0);
MODULE_PARM_DESC(adm1022_temp3, "List of adapter,address pairs "
			"to enable 3rd temperature (ADM1022 only)");

/* Many THMC50 constants specified below */

/* The THMC50 registers */
#define THMC50_REG_CONF				0x40
#define THMC50_REG_COMPANY_ID			0x3E
#define THMC50_REG_DIE_CODE			0x3F
#define THMC50_REG_ANALOG_OUT			0x19
/*
 * The mirror status register cannot be used as
 * reading it does not clear alarms.
 */
#define THMC50_REG_INTR				0x41

static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B };
static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 };
static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 };

#define THMC50_REG_CONF_nFANOFF			0x20
#define THMC50_REG_CONF_PROGRAMMED		0x08

/* Each client has this additional data */
struct thmc50_data {
	struct device *hwmon_dev;

	struct mutex update_lock;
	enum chips type;
	unsigned long last_updated;	/* In jiffies */
	char has_temp3;		/* !=0 if it is ADM1022 in temp3 mode */
	char valid;		/* !=0 if following fields are valid */

	/* Register values */
	s8 temp_input[3];
	s8 temp_max[3];
	s8 temp_min[3];
	s8 temp_critical[3];
	u8 analog_out;
	u8 alarms;
};

static int thmc50_detect(struct i2c_client *client,
			 struct i2c_board_info *info);
static int thmc50_probe(struct i2c_client *client,
			const struct i2c_device_id *id);
static int thmc50_remove(struct i2c_client *client);
static void thmc50_init_client(struct i2c_client *client);
static struct thmc50_data *thmc50_update_device(struct device *dev);

static const struct i2c_device_id thmc50_id[] = {
	{ "adm1022", adm1022 },
	{ "thmc50", thmc50 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, thmc50_id);

static struct i2c_driver thmc50_driver = {
	.class = I2C_CLASS_HWMON,
	.driver = {
		.name = "thmc50",
	},
	.probe = thmc50_probe,
	.remove = thmc50_remove,
	.id_table = thmc50_id,
	.detect = thmc50_detect,
	.address_list = normal_i2c,
};

static ssize_t show_analog_out(struct device *dev,
			       struct device_attribute *attr, char *buf)
{
	struct thmc50_data *data = thmc50_update_device(dev);
	return sprintf(buf, "%d\n", data->analog_out);
}

static ssize_t set_analog_out(struct device *dev,
			      struct device_attribute *attr,
			      const char *buf, size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct thmc50_data *data = i2c_get_clientdata(client);
	int tmp = simple_strtoul(buf, NULL, 10);
	int config;

	mutex_lock(&data->update_lock);
	data->analog_out = SENSORS_LIMIT(tmp, 0, 255);
	i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT,
				  data->analog_out);

	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
	if (data->analog_out == 0)
		config &= ~THMC50_REG_CONF_nFANOFF;
	else
		config |= THMC50_REG_CONF_nFANOFF;
	i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config);

	mutex_unlock(&data->update_lock);
	return count;
}

/* There is only one PWM mode = DC */
static ssize_t show_pwm_mode(struct device *dev, struct device_attribute *attr,
			     char *buf)
{
	return sprintf(buf, "0\n");
}

/* Temperatures */
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
			 char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct thmc50_data *data = thmc50_update_device(dev);
	return sprintf(buf, "%d\n", data->temp_input[nr] * 1000);
}

static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
			     char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct thmc50_data *data = thmc50_update_device(dev);
	return sprintf(buf, "%d\n", data->temp_min[nr] * 1000);
}

static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
			    const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct thmc50_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->temp_min[nr] = SENSORS_LIMIT(val / 1000, -128, 127);
	i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MIN[nr],
				  data->temp_min[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
			     char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct thmc50_data *data = thmc50_update_device(dev);
	return sprintf(buf, "%d\n", data->temp_max[nr] * 1000);
}

static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
			    const char *buf, size_t count)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct i2c_client *client = to_i2c_client(dev);
	struct thmc50_data *data = i2c_get_clientdata(client);
	int val = simple_strtol(buf, NULL, 10);

	mutex_lock(&data->update_lock);
	data->temp_max[nr] = SENSORS_LIMIT(val / 1000, -128, 127);
	i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MAX[nr],
				  data->temp_max[nr]);
	mutex_unlock(&data->update_lock);
	return count;
}

static ssize_t show_temp_critical(struct device *dev,
				  struct device_attribute *attr,
				  char *buf)
{
	int nr = to_sensor_dev_attr(attr)->index;
	struct thmc50_data *data = thmc50_update_device(dev);
	return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000);
}

static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
			  char *buf)
{
	int index = to_sensor_dev_attr(attr)->index;
	struct thmc50_data *data = thmc50_update_device(dev);

	return sprintf(buf, "%u\n", (data->alarms >> index) & 1);
}

#define temp_reg(offset)						\
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp,	\
			NULL, offset - 1);				\
static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR,	\
			show_temp_min, set_temp_min, offset - 1);	\
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR,	\
			show_temp_max, set_temp_max, offset - 1);	\
static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO,			\
			show_temp_critical, NULL, offset - 1);

temp_reg(1);
temp_reg(2);
temp_reg(3);

static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 7);
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 2);

static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_analog_out,
			  set_analog_out, 0);
static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0);

static struct attribute *thmc50_attributes[] = {
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp1_min.dev_attr.attr,
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp1_crit.dev_attr.attr,
	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_max.dev_attr.attr,
	&sensor_dev_attr_temp2_min.dev_attr.attr,
	&sensor_dev_attr_temp2_input.dev_attr.attr,
	&sensor_dev_attr_temp2_crit.dev_attr.attr,
	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_fault.dev_attr.attr,
	&sensor_dev_attr_pwm1.dev_attr.attr,
	&sensor_dev_attr_pwm1_mode.dev_attr.attr,
	NULL
};

static const struct attribute_group thmc50_group = {
	.attrs = thmc50_attributes,
};

/* for ADM1022 3rd temperature mode */
static struct attribute *temp3_attributes[] = {
	&sensor_dev_attr_temp3_max.dev_attr.attr,
	&sensor_dev_attr_temp3_min.dev_attr.attr,
	&sensor_dev_attr_temp3_input.dev_attr.attr,
	&sensor_dev_attr_temp3_crit.dev_attr.attr,
	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_fault.dev_attr.attr,
	NULL
};

static const struct attribute_group temp3_group = {
	.attrs = temp3_attributes,
};

/* Return 0 if detection is successful, -ENODEV otherwise */
static int thmc50_detect(struct i2c_client *client,
			 struct i2c_board_info *info)
{
	unsigned company;
	unsigned revision;
	unsigned config;
	struct i2c_adapter *adapter = client->adapter;
	const char *type_name;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
		pr_debug("thmc50: detect failed, "
			 "smbus byte data not supported!\n");
		return -ENODEV;
	}

	pr_debug("thmc50: Probing for THMC50 at 0x%2X on bus %d\n",
		 client->addr, i2c_adapter_id(client->adapter));

	company = i2c_smbus_read_byte_data(client, THMC50_REG_COMPANY_ID);
	revision = i2c_smbus_read_byte_data(client, THMC50_REG_DIE_CODE);
	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
	if (revision < 0xc0 || (config & 0x10))
		return -ENODEV;

	if (company == 0x41) {
		int id = i2c_adapter_id(client->adapter);
		int i;

		type_name = "adm1022";
		for (i = 0; i + 1 < adm1022_temp3_num; i += 2)
			if (adm1022_temp3[i] == id &&
			    adm1022_temp3[i + 1] == client->addr) {
				/* enable 2nd remote temp */
				config |= (1 << 7);
				i2c_smbus_write_byte_data(client,
							  THMC50_REG_CONF,
							  config);
				break;
			}
	} else if (company == 0x49) {
		type_name = "thmc50";
	} else {
		pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n");
		return -ENODEV;
	}

	pr_debug("thmc50: Detected %s (version %x, revision %x)\n",
		 type_name, (revision >> 4) - 0xc, revision & 0xf);

	strlcpy(info->type, type_name, I2C_NAME_SIZE);

	return 0;
}

static int thmc50_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	struct thmc50_data *data;
	int err;

	data = kzalloc(sizeof(struct thmc50_data), GFP_KERNEL);
	if (!data) {
		pr_debug("thmc50: detect failed, kzalloc failed!\n");
		err = -ENOMEM;
		goto exit;
	}

	i2c_set_clientdata(client, data);
	data->type = id->driver_data;
	mutex_init(&data->update_lock);

	thmc50_init_client(client);

	/* Register sysfs hooks */
	if ((err = sysfs_create_group(&client->dev.kobj, &thmc50_group)))
		goto exit_free;

	/* Register ADM1022 sysfs hooks */
	if (data->has_temp3)
		if ((err = sysfs_create_group(&client->dev.kobj,
					      &temp3_group)))
			goto exit_remove_sysfs_thmc50;

	/* Register a new directory entry with module sensors */
	data->hwmon_dev = hwmon_device_register(&client->dev);
	if (IS_ERR(data->hwmon_dev)) {
		err = PTR_ERR(data->hwmon_dev);
		goto exit_remove_sysfs;
	}

	return 0;

exit_remove_sysfs:
	if (data->has_temp3)
		sysfs_remove_group(&client->dev.kobj, &temp3_group);
exit_remove_sysfs_thmc50:
	sysfs_remove_group(&client->dev.kobj, &thmc50_group);
exit_free:
	kfree(data);
exit:
	return err;
}

static int thmc50_remove(struct i2c_client *client)
{
	struct thmc50_data *data = i2c_get_clientdata(client);

	hwmon_device_unregister(data->hwmon_dev);
	sysfs_remove_group(&client->dev.kobj, &thmc50_group);
	if (data->has_temp3)
		sysfs_remove_group(&client->dev.kobj, &temp3_group);

	kfree(data);

	return 0;
}

static void thmc50_init_client(struct i2c_client *client)
{
	struct thmc50_data *data = i2c_get_clientdata(client);
	int config;

	data->analog_out = i2c_smbus_read_byte_data(client,
						    THMC50_REG_ANALOG_OUT);
	/* set up to at least 1 */
	if (data->analog_out == 0) {
		data->analog_out = 1;
		i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT,
					  data->analog_out);
	}
	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
	config |= 0x1;	/* start the chip if it is in standby mode */
	if (data->type == adm1022 && (config & (1 << 7)))
		data->has_temp3 = 1;
	i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config);
}

static struct thmc50_data *thmc50_update_device(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct thmc50_data *data = i2c_get_clientdata(client);
	int timeout = HZ / 5 + (data->type == thmc50 ? HZ : 0);

	mutex_lock(&data->update_lock);

	if (time_after(jiffies, data->last_updated + timeout)
	    || !data->valid) {

		int temps = data->has_temp3 ? 3 : 2;
		int i;
		int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);

		prog &= THMC50_REG_CONF_PROGRAMMED;

		for (i = 0; i < temps; i++) {
			data->temp_input[i] = i2c_smbus_read_byte_data(client,
						THMC50_REG_TEMP[i]);
			data->temp_max[i] = i2c_smbus_read_byte_data(client,
						THMC50_REG_TEMP_MAX[i]);
			data->temp_min[i] = i2c_smbus_read_byte_data(client,
						THMC50_REG_TEMP_MIN[i]);
			data->temp_critical[i] =
				i2c_smbus_read_byte_data(client,
					prog ? THMC50_REG_TEMP_CRITICAL[i]
					     : THMC50_REG_TEMP_DEFAULT[i]);
		}
		data->analog_out =
		    i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
		data->alarms =
		    i2c_smbus_read_byte_data(client, THMC50_REG_INTR);
		data->last_updated = jiffies;
		data->valid = 1;
	}

	mutex_unlock(&data->update_lock);

	return data;
}

static int __init sm_thmc50_init(void)
{
	return i2c_add_driver(&thmc50_driver);
}

static void __exit sm_thmc50_exit(void)
{
	i2c_del_driver(&thmc50_driver);
}

MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>");
MODULE_DESCRIPTION("THMC50 driver");

module_init(sm_thmc50_init);
module_exit(sm_thmc50_exit);
Commit	Line	Data
add77c64 KH	1	/*
	2	thmc50.c - Part of lm_sensors, Linux kernel modules for hardware
	3	monitoring
	4	Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl>
	5	Based on 2.4 driver by Frodo Looijaard <frodol@dds.nl> and
	6	Philip Edelbrock <phil@netroedge.com>
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21	*/
	22
	23	#include <linux/module.h>
	24	#include <linux/init.h>
	25	#include <linux/slab.h>
	26	#include <linux/i2c.h>
	27	#include <linux/hwmon.h>
	28	#include <linux/hwmon-sysfs.h>
	29	#include <linux/err.h>
	30	#include <linux/mutex.h>
	31
	32	MODULE_LICENSE("GPL");
	33
	34	/* Addresses to scan */
25e9c86d	35	static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
add77c64 KH	36
add77c64 KH	37	/* Insmod parameters */
e5e9f44c	38	enum chips { thmc50, adm1022 };
f95f0b4c JD	39
	40	static unsigned short adm1022_temp3[16];
	41	static unsigned int adm1022_temp3_num;
	42	module_param_array(adm1022_temp3, ushort, &adm1022_temp3_num, 0);
	43	MODULE_PARM_DESC(adm1022_temp3, "List of adapter,address pairs "
add77c64 KH	44	"to enable 3rd temperature (ADM1022 only)");
	45
	46	/* Many THMC50 constants specified below */
	47
	48	/* The THMC50 registers */
	49	#define THMC50_REG_CONF 0x40
	50	#define THMC50_REG_COMPANY_ID 0x3E
	51	#define THMC50_REG_DIE_CODE 0x3F
	52	#define THMC50_REG_ANALOG_OUT 0x19
dcf3b5fb	53	/*
bba891c2 KH	54	* The mirror status register cannot be used as
bba891c2 KH	55	* reading it does not clear alarms.
dcf3b5fb	56	*/
bba891c2	57	#define THMC50_REG_INTR 0x41
add77c64	58
5910a9b2 TK	59	static const u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
	60	static const u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
	61	static const u8 THMC50_REG_TEMP_MAX[] = { 0x39, 0x37, 0x2B };
84f768c1 KH	62	static const u8 THMC50_REG_TEMP_CRITICAL[] = { 0x13, 0x14, 0x14 };
84f768c1 KH	63	static const u8 THMC50_REG_TEMP_DEFAULT[] = { 0x17, 0x18, 0x18 };
add77c64 KH	64
add77c64 KH	65	#define THMC50_REG_CONF_nFANOFF 0x20
84f768c1	66	#define THMC50_REG_CONF_PROGRAMMED 0x08
add77c64 KH	67
	68	/* Each client has this additional data */
	69	struct thmc50_data {
1beeffe4	70	struct device *hwmon_dev;
add77c64 KH	71
	72	struct mutex update_lock;
	73	enum chips type;
	74	unsigned long last_updated; /* In jiffies */
	75	char has_temp3; /* !=0 if it is ADM1022 in temp3 mode */
	76	char valid; /* !=0 if following fields are valid */
	77
	78	/* Register values */
	79	s8 temp_input[3];
	80	s8 temp_max[3];
	81	s8 temp_min[3];
84f768c1	82	s8 temp_critical[3];
add77c64	83	u8 analog_out;
dcf3b5fb	84	u8 alarms;
add77c64 KH	85	};
add77c64 KH	86
310ec792	87	static int thmc50_detect(struct i2c_client *client,
ccf37488 JD	88	struct i2c_board_info *info);
	89	static int thmc50_probe(struct i2c_client *client,
	90	const struct i2c_device_id *id);
	91	static int thmc50_remove(struct i2c_client *client);
add77c64 KH	92	static void thmc50_init_client(struct i2c_client *client);
	93	static struct thmc50_data thmc50_update_device(struct device dev);
	94
ccf37488 JD	95	static const struct i2c_device_id thmc50_id[] = {
	96	{ "adm1022", adm1022 },
	97	{ "thmc50", thmc50 },
	98	{ }
	99	};
	100	MODULE_DEVICE_TABLE(i2c, thmc50_id);
	101
add77c64	102	static struct i2c_driver thmc50_driver = {
ccf37488	103	.class = I2C_CLASS_HWMON,
add77c64 KH	104	.driver = {
	105	.name = "thmc50",
	106	},
ccf37488 JD	107	.probe = thmc50_probe,
	108	.remove = thmc50_remove,
	109	.id_table = thmc50_id,
	110	.detect = thmc50_detect,
c3813d6a	111	.address_list = normal_i2c,
add77c64 KH	112	};
	113
	114	static ssize_t show_analog_out(struct device *dev,
	115	struct device_attribute attr, char buf)
	116	{
	117	struct thmc50_data *data = thmc50_update_device(dev);
	118	return sprintf(buf, "%d\n", data->analog_out);
	119	}
	120
	121	static ssize_t set_analog_out(struct device *dev,
	122	struct device_attribute *attr,
	123	const char *buf, size_t count)
	124	{
	125	struct i2c_client *client = to_i2c_client(dev);
	126	struct thmc50_data *data = i2c_get_clientdata(client);
	127	int tmp = simple_strtoul(buf, NULL, 10);
	128	int config;
	129
	130	mutex_lock(&data->update_lock);
	131	data->analog_out = SENSORS_LIMIT(tmp, 0, 255);
	132	i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT,
	133	data->analog_out);
	134
	135	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
	136	if (data->analog_out == 0)
	137	config &= ~THMC50_REG_CONF_nFANOFF;
	138	else
	139	config \|= THMC50_REG_CONF_nFANOFF;
	140	i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config);
	141
	142	mutex_unlock(&data->update_lock);
	143	return count;
	144	}
	145
	146	/* There is only one PWM mode = DC */
	147	static ssize_t show_pwm_mode(struct device dev, struct device_attribute attr,
	148	char *buf)
	149	{
	150	return sprintf(buf, "0\n");
	151	}
	152
	153	/* Temperatures */
	154	static ssize_t show_temp(struct device dev, struct device_attribute attr,
	155	char *buf)
	156	{
	157	int nr = to_sensor_dev_attr(attr)->index;
	158	struct thmc50_data *data = thmc50_update_device(dev);
	159	return sprintf(buf, "%d\n", data->temp_input[nr] * 1000);
	160	}
	161
	162	static ssize_t show_temp_min(struct device dev, struct device_attribute attr,
	163	char *buf)
	164	{
	165	int nr = to_sensor_dev_attr(attr)->index;
	166	struct thmc50_data *data = thmc50_update_device(dev);
	167	return sprintf(buf, "%d\n", data->temp_min[nr] * 1000);
	168	}
	169
	170	static ssize_t set_temp_min(struct device dev, struct device_attribute attr,
	171	const char *buf, size_t count)
	172	{
	173	int nr = to_sensor_dev_attr(attr)->index;
	174	struct i2c_client *client = to_i2c_client(dev);
	175	struct thmc50_data *data = i2c_get_clientdata(client);
176	int val = simple_strtol(buf, NULL, 10);
177
178	mutex_lock(&data->update_lock);
179	data->temp_min[nr] = SENSORS_LIMIT(val / 1000, -128, 127);
180	i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MIN[nr],
181	data->temp_min[nr]);
182	mutex_unlock(&data->update_lock);
183	return count;
184	}
185
186	static ssize_t show_temp_max(struct device dev, struct device_attribute attr,
187	char *buf)
188	{
189	int nr = to_sensor_dev_attr(attr)->index;
190	struct thmc50_data *data = thmc50_update_device(dev);
191	return sprintf(buf, "%d\n", data->temp_max[nr] * 1000);
192	}
193
194	static ssize_t set_temp_max(struct device dev, struct device_attribute attr,
195	const char *buf, size_t count)
196	{
197	int nr = to_sensor_dev_attr(attr)->index;
198	struct i2c_client *client = to_i2c_client(dev);
199	struct thmc50_data *data = i2c_get_clientdata(client);
200	int val = simple_strtol(buf, NULL, 10);
201
202	mutex_lock(&data->update_lock);
203	data->temp_max[nr] = SENSORS_LIMIT(val / 1000, -128, 127);
204	i2c_smbus_write_byte_data(client, THMC50_REG_TEMP_MAX[nr],
205	data->temp_max[nr]);
206	mutex_unlock(&data->update_lock);
207	return count;
208	}
209
84f768c1 KH	210	static ssize_t show_temp_critical(struct device *dev,
	211	struct device_attribute *attr,
	212	char *buf)
	213	{
	214	int nr = to_sensor_dev_attr(attr)->index;
	215	struct thmc50_data *data = thmc50_update_device(dev);
	216	return sprintf(buf, "%d\n", data->temp_critical[nr] * 1000);
	217	}
	218
dcf3b5fb KH	219	static ssize_t show_alarm(struct device dev, struct device_attribute attr,
	220	char *buf)
	221	{
	222	int index = to_sensor_dev_attr(attr)->index;
	223	struct thmc50_data *data = thmc50_update_device(dev);
	224
	225	return sprintf(buf, "%u\n", (data->alarms >> index) & 1);
	226	}
	227
add77c64 KH	228	#define temp_reg(offset) \
	229	static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \
	230	NULL, offset - 1); \
	231	static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO \| S_IWUSR, \
	232	show_temp_min, set_temp_min, offset - 1); \
	233	static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO \| S_IWUSR, \
84f768c1 KH	234	show_temp_max, set_temp_max, offset - 1); \
	235	static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO, \
	236	show_temp_critical, NULL, offset - 1);
add77c64 KH	237
	238	temp_reg(1);
	239	temp_reg(2);
	240	temp_reg(3);
	241
dcf3b5fb KH	242	static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0);
	243	static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
	244	static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
	245	static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 7);
	246	static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 2);
	247
add77c64 KH	248	static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO \| S_IWUSR, show_analog_out,
	249	set_analog_out, 0);
	250	static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0);
	251
	252	static struct attribute *thmc50_attributes[] = {
	253	&sensor_dev_attr_temp1_max.dev_attr.attr,
	254	&sensor_dev_attr_temp1_min.dev_attr.attr,
	255	&sensor_dev_attr_temp1_input.dev_attr.attr,
84f768c1	256	&sensor_dev_attr_temp1_crit.dev_attr.attr,
dcf3b5fb	257	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
add77c64 KH	258	&sensor_dev_attr_temp2_max.dev_attr.attr,
	259	&sensor_dev_attr_temp2_min.dev_attr.attr,
	260	&sensor_dev_attr_temp2_input.dev_attr.attr,
84f768c1	261	&sensor_dev_attr_temp2_crit.dev_attr.attr,
dcf3b5fb KH	262	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
dcf3b5fb KH	263	&sensor_dev_attr_temp2_fault.dev_attr.attr,
add77c64 KH	264	&sensor_dev_attr_pwm1.dev_attr.attr,
	265	&sensor_dev_attr_pwm1_mode.dev_attr.attr,
	266	NULL
	267	};
	268
	269	static const struct attribute_group thmc50_group = {
	270	.attrs = thmc50_attributes,
	271	};
	272
	273	/* for ADM1022 3rd temperature mode */
894c00cf	274	static struct attribute *temp3_attributes[] = {
add77c64 KH	275	&sensor_dev_attr_temp3_max.dev_attr.attr,
	276	&sensor_dev_attr_temp3_min.dev_attr.attr,
	277	&sensor_dev_attr_temp3_input.dev_attr.attr,
84f768c1	278	&sensor_dev_attr_temp3_crit.dev_attr.attr,
dcf3b5fb KH	279	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
dcf3b5fb KH	280	&sensor_dev_attr_temp3_fault.dev_attr.attr,
add77c64 KH	281	NULL
	282	};
	283
894c00cf JD	284	static const struct attribute_group temp3_group = {
894c00cf JD	285	.attrs = temp3_attributes,
add77c64 KH	286	};
add77c64 KH	287
ccf37488	288	/* Return 0 if detection is successful, -ENODEV otherwise */
310ec792	289	static int thmc50_detect(struct i2c_client *client,
ccf37488	290	struct i2c_board_info *info)
add77c64 KH	291	{
	292	unsigned company;
	293	unsigned revision;
	294	unsigned config;
ccf37488	295	struct i2c_adapter *adapter = client->adapter;
cc28a610	296	const char *type_name;
add77c64 KH	297
	298	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
	299	pr_debug("thmc50: detect failed, "
	300	"smbus byte data not supported!\n");
ccf37488	301	return -ENODEV;
add77c64 KH	302	}
add77c64 KH	303
add77c64 KH	304	pr_debug("thmc50: Probing for THMC50 at 0x%2X on bus %d\n",
	305	client->addr, i2c_adapter_id(client->adapter));
	306
add77c64 KH	307	company = i2c_smbus_read_byte_data(client, THMC50_REG_COMPANY_ID);
	308	revision = i2c_smbus_read_byte_data(client, THMC50_REG_DIE_CODE);
	309	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
52df6440 JD	310	if (revision < 0xc0 \|\| (config & 0x10))
52df6440 JD	311	return -ENODEV;
add77c64	312
52df6440	313	if (company == 0x41) {
add77c64 KH	314	int id = i2c_adapter_id(client->adapter);
	315	int i;
	316
	317	type_name = "adm1022";
add77c64 KH	318	for (i = 0; i + 1 < adm1022_temp3_num; i += 2)
add77c64 KH	319	if (adm1022_temp3[i] == id &&
ccf37488	320	adm1022_temp3[i + 1] == client->addr) {
add77c64	321	/* enable 2nd remote temp */
ccf37488 JD	322	config \|= (1 << 7);
	323	i2c_smbus_write_byte_data(client,
	324	THMC50_REG_CONF,
	325	config);
add77c64 KH	326	break;
add77c64 KH	327	}
52df6440	328	} else if (company == 0x49) {
cc28a610	329	type_name = "thmc50";
52df6440 JD	330	} else {
	331	pr_debug("thmc50: Detection of THMC50/ADM1022 failed\n");
	332	return -ENODEV;
add77c64	333	}
52df6440	334
cc28a610 JD	335	pr_debug("thmc50: Detected %s (version %x, revision %x)\n",
cc28a610 JD	336	type_name, (revision >> 4) - 0xc, revision & 0xf);
add77c64	337
ccf37488	338	strlcpy(info->type, type_name, I2C_NAME_SIZE);
add77c64	339
ccf37488 JD	340	return 0;
	341	}
	342
	343	static int thmc50_probe(struct i2c_client *client,
	344	const struct i2c_device_id *id)
	345	{
	346	struct thmc50_data *data;
	347	int err;
	348
	349	data = kzalloc(sizeof(struct thmc50_data), GFP_KERNEL);
	350	if (!data) {
	351	pr_debug("thmc50: detect failed, kzalloc failed!\n");
	352	err = -ENOMEM;
	353	goto exit;
	354	}
	355
	356	i2c_set_clientdata(client, data);
	357	data->type = id->driver_data;
	358	mutex_init(&data->update_lock);
add77c64 KH	359
	360	thmc50_init_client(client);
	361
	362	/* Register sysfs hooks */
	363	if ((err = sysfs_create_group(&client->dev.kobj, &thmc50_group)))
ccf37488	364	goto exit_free;
add77c64 KH	365
add77c64 KH	366	/* Register ADM1022 sysfs hooks */
894c00cf	367	if (data->has_temp3)
add77c64	368	if ((err = sysfs_create_group(&client->dev.kobj,
894c00cf	369	&temp3_group)))
add77c64 KH	370	goto exit_remove_sysfs_thmc50;
	371
	372	/* Register a new directory entry with module sensors */
1beeffe4 TJ	373	data->hwmon_dev = hwmon_device_register(&client->dev);
	374	if (IS_ERR(data->hwmon_dev)) {
	375	err = PTR_ERR(data->hwmon_dev);
add77c64 KH	376	goto exit_remove_sysfs;
	377	}
	378
	379	return 0;
	380
	381	exit_remove_sysfs:
894c00cf JD	382	if (data->has_temp3)
894c00cf JD	383	sysfs_remove_group(&client->dev.kobj, &temp3_group);
add77c64 KH	384	exit_remove_sysfs_thmc50:
add77c64 KH	385	sysfs_remove_group(&client->dev.kobj, &thmc50_group);
add77c64 KH	386	exit_free:
	387	kfree(data);
	388	exit:
	389	return err;
	390	}
	391
ccf37488	392	static int thmc50_remove(struct i2c_client *client)
add77c64 KH	393	{
add77c64 KH	394	struct thmc50_data *data = i2c_get_clientdata(client);
add77c64	395
1beeffe4	396	hwmon_device_unregister(data->hwmon_dev);
add77c64	397	sysfs_remove_group(&client->dev.kobj, &thmc50_group);
894c00cf JD	398	if (data->has_temp3)
894c00cf JD	399	sysfs_remove_group(&client->dev.kobj, &temp3_group);
add77c64	400
add77c64 KH	401	kfree(data);
	402
	403	return 0;
	404	}
	405
	406	static void thmc50_init_client(struct i2c_client *client)
	407	{
	408	struct thmc50_data *data = i2c_get_clientdata(client);
	409	int config;
	410
	411	data->analog_out = i2c_smbus_read_byte_data(client,
	412	THMC50_REG_ANALOG_OUT);
	413	/* set up to at least 1 */
	414	if (data->analog_out == 0) {
	415	data->analog_out = 1;
	416	i2c_smbus_write_byte_data(client, THMC50_REG_ANALOG_OUT,
	417	data->analog_out);
	418	}
	419	config = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
	420	config \|= 0x1; /* start the chip if it is in standby mode */
ccf37488 JD	421	if (data->type == adm1022 && (config & (1 << 7)))
ccf37488 JD	422	data->has_temp3 = 1;
add77c64 KH	423	i2c_smbus_write_byte_data(client, THMC50_REG_CONF, config);
	424	}
	425
	426	static struct thmc50_data thmc50_update_device(struct device dev)
	427	{
	428	struct i2c_client *client = to_i2c_client(dev);
	429	struct thmc50_data *data = i2c_get_clientdata(client);
	430	int timeout = HZ / 5 + (data->type == thmc50 ? HZ : 0);
	431
	432	mutex_lock(&data->update_lock);
	433
	434	if (time_after(jiffies, data->last_updated + timeout)
	435	\|\| !data->valid) {
	436
	437	int temps = data->has_temp3 ? 3 : 2;
	438	int i;
84f768c1 KH	439	int prog = i2c_smbus_read_byte_data(client, THMC50_REG_CONF);
	440
	441	prog &= THMC50_REG_CONF_PROGRAMMED;
	442
add77c64 KH	443	for (i = 0; i < temps; i++) {
	444	data->temp_input[i] = i2c_smbus_read_byte_data(client,
	445	THMC50_REG_TEMP[i]);
	446	data->temp_max[i] = i2c_smbus_read_byte_data(client,
	447	THMC50_REG_TEMP_MAX[i]);
	448	data->temp_min[i] = i2c_smbus_read_byte_data(client,
	449	THMC50_REG_TEMP_MIN[i]);
84f768c1 KH	450	data->temp_critical[i] =
	451	i2c_smbus_read_byte_data(client,
	452	prog ? THMC50_REG_TEMP_CRITICAL[i]
	453	: THMC50_REG_TEMP_DEFAULT[i]);
add77c64 KH	454	}
	455	data->analog_out =
	456	i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
dcf3b5fb	457	data->alarms =
bba891c2	458	i2c_smbus_read_byte_data(client, THMC50_REG_INTR);
add77c64 KH	459	data->last_updated = jiffies;
	460	data->valid = 1;
	461	}
	462
	463	mutex_unlock(&data->update_lock);
	464
	465	return data;
	466	}
	467
	468	static int __init sm_thmc50_init(void)
	469	{
	470	return i2c_add_driver(&thmc50_driver);
	471	}
	472
	473	static void __exit sm_thmc50_exit(void)
	474	{
	475	i2c_del_driver(&thmc50_driver);
	476	}
	477
	478	MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>");
	479	MODULE_DESCRIPTION("THMC50 driver");
	480
	481	module_init(sm_thmc50_init);
	482	module_exit(sm_thmc50_exit);