drivers/hwmon/f71882fg.c

/***************************************************************************
 *   Copyright (C) 2006 by Hans Edgington <hans@edgington.nl>              *
 *   Copyright (C) 2007-2011 Hans de Goede <hdegoede@redhat.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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/io.h>
#include <linux/acpi.h>

#define DRVNAME "f71882fg"

#define SIO_F71858FG_LD_HWM	0x02	/* Hardware monitor logical device */
#define SIO_F71882FG_LD_HWM	0x04	/* Hardware monitor logical device */
#define SIO_UNLOCK_KEY		0x87	/* Key to enable Super-I/O */
#define SIO_LOCK_KEY		0xAA	/* Key to disable Super-I/O */

#define SIO_REG_LDSEL		0x07	/* Logical device select */
#define SIO_REG_DEVID		0x20	/* Device ID (2 bytes) */
#define SIO_REG_DEVREV		0x22	/* Device revision */
#define SIO_REG_MANID		0x23	/* Fintek ID (2 bytes) */
#define SIO_REG_ENABLE		0x30	/* Logical device enable */
#define SIO_REG_ADDR		0x60	/* Logical device address (2 bytes) */

#define SIO_FINTEK_ID		0x1934	/* Manufacturers ID */
#define SIO_F71858_ID		0x0507  /* Chipset ID */
#define SIO_F71862_ID		0x0601	/* Chipset ID */
#define SIO_F71882_ID		0x0541	/* Chipset ID */
#define SIO_F71889_ID		0x0723	/* Chipset ID */
#define SIO_F8000_ID		0x0581	/* Chipset ID */

#define REGION_LENGTH		8
#define ADDR_REG_OFFSET		5
#define DATA_REG_OFFSET		6

#define F71882FG_REG_IN_STATUS		0x12 /* f71882fg only */
#define F71882FG_REG_IN_BEEP		0x13 /* f71882fg only */
#define F71882FG_REG_IN(nr)		(0x20  + (nr))
#define F71882FG_REG_IN1_HIGH		0x32 /* f71882fg only */

#define F71882FG_REG_FAN(nr)		(0xA0 + (16 * (nr)))
#define F71882FG_REG_FAN_TARGET(nr)	(0xA2 + (16 * (nr)))
#define F71882FG_REG_FAN_FULL_SPEED(nr)	(0xA4 + (16 * (nr)))
#define F71882FG_REG_FAN_STATUS		0x92
#define F71882FG_REG_FAN_BEEP		0x93

#define F71882FG_REG_TEMP(nr)		(0x70 + 2 * (nr))
#define F71882FG_REG_TEMP_OVT(nr)	(0x80 + 2 * (nr))
#define F71882FG_REG_TEMP_HIGH(nr)	(0x81 + 2 * (nr))
#define F71882FG_REG_TEMP_STATUS	0x62
#define F71882FG_REG_TEMP_BEEP		0x63
#define F71882FG_REG_TEMP_CONFIG	0x69
#define F71882FG_REG_TEMP_HYST(nr)	(0x6C + (nr))
#define F71882FG_REG_TEMP_TYPE		0x6B
#define F71882FG_REG_TEMP_DIODE_OPEN	0x6F

#define F71882FG_REG_PWM(nr)		(0xA3 + (16 * (nr)))
#define F71882FG_REG_PWM_TYPE		0x94
#define F71882FG_REG_PWM_ENABLE		0x96

#define F71882FG_REG_FAN_HYST(nr)	(0x98 + (nr))

#define F71882FG_REG_FAN_FAULT_T	0x9F
#define F71882FG_FAN_NEG_TEMP_EN	0x20

#define F71882FG_REG_POINT_PWM(pwm, point)	(0xAA + (point) + (16 * (pwm)))
#define F71882FG_REG_POINT_TEMP(pwm, point)	(0xA6 + (point) + (16 * (pwm)))
#define F71882FG_REG_POINT_MAPPING(nr)		(0xAF + 16 * (nr))

#define	F71882FG_REG_START		0x01

#define F71882FG_MAX_INS		9

#define FAN_MIN_DETECT			366 /* Lowest detectable fanspeed */

static unsigned short force_id;
module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID");

enum chips { f71858fg, f71862fg, f71882fg, f71889fg, f8000 };

static const char *f71882fg_names[] = {
	"f71858fg",
	"f71862fg",
	"f71882fg",
	"f71889fg",
	"f8000",
};

static const char f71882fg_has_in[5][F71882FG_MAX_INS] = {
	{ 1, 1, 1, 0, 0, 0, 0, 0, 0 }, /* f71858fg */
	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71862fg */
	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71882fg */
	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71889fg */
	{ 1, 1, 1, 0, 0, 0, 0, 0, 0 }, /* f8000 */
};

static const char f71882fg_has_in1_alarm[5] = {
	0, /* f71858fg */
	0, /* f71862fg */
	1, /* f71882fg */
	1, /* f71889fg */
	0, /* f8000 */
};

static struct platform_device *f71882fg_pdev;

/* Super-I/O Function prototypes */
static inline int superio_inb(int base, int reg);
static inline int superio_inw(int base, int reg);
static inline int superio_enter(int base);
static inline void superio_select(int base, int ld);
static inline void superio_exit(int base);

struct f71882fg_sio_data {
	enum chips type;
};

struct f71882fg_data {
	unsigned short addr;
	enum chips type;
	struct device *hwmon_dev;

	struct mutex update_lock;
	int temp_start;			/* temp numbering start (0 or 1) */
	char valid;			/* !=0 if following fields are valid */
	char auto_point_temp_signed;
	unsigned long last_updated;	/* In jiffies */
	unsigned long last_limits;	/* In jiffies */

	/* Register Values */
	u8	in[F71882FG_MAX_INS];
	u8	in1_max;
	u8	in_status;
	u8	in_beep;
	u16	fan[4];
	u16	fan_target[4];
	u16	fan_full_speed[4];
	u8	fan_status;
	u8	fan_beep;
	/* Note: all models have only 3 temperature channels, but on some
	   they are addressed as 0-2 and on others as 1-3, so for coding
	   convenience we reserve space for 4 channels */
	u16	temp[4];
	u8	temp_ovt[4];
	u8	temp_high[4];
	u8	temp_hyst[2]; /* 2 hysts stored per reg */
	u8	temp_type[4];
	u8	temp_status;
	u8	temp_beep;
	u8	temp_diode_open;
	u8	temp_config;
	u8	pwm[4];
	u8	pwm_enable;
	u8	pwm_auto_point_hyst[2];
	u8	pwm_auto_point_mapping[4];
	u8	pwm_auto_point_pwm[4][5];
	s8	pwm_auto_point_temp[4][4];
};

/* Sysfs in */
static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
	char *buf);
static ssize_t show_in_max(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t store_in_max(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count);
static ssize_t show_in_beep(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t store_in_beep(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count);
static ssize_t show_in_alarm(struct device *dev, struct device_attribute
	*devattr, char *buf);
/* Sysfs Fan */
static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
	char *buf);
static ssize_t show_fan_full_speed(struct device *dev,
	struct device_attribute *devattr, char *buf);
static ssize_t store_fan_full_speed(struct device *dev,
	struct device_attribute *devattr, const char *buf, size_t count);
static ssize_t show_fan_beep(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t store_fan_beep(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count);
static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
	*devattr, char *buf);
/* Sysfs Temp */
static ssize_t show_temp(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t show_temp_max(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t store_temp_max(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count);
static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count);
static ssize_t show_temp_crit(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t store_temp_crit(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count);
static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t show_temp_type(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t show_temp_beep(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t store_temp_beep(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count);
static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
	*devattr, char *buf);
static ssize_t show_temp_fault(struct device *dev, struct device_attribute
	*devattr, char *buf);
/* PWM and Auto point control */
static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
	char *buf);
static ssize_t store_pwm(struct device *dev, struct device_attribute *devattr,
	const char *buf, size_t count);
static ssize_t show_pwm_enable(struct device *dev,
	struct device_attribute *devattr, char *buf);
static ssize_t store_pwm_enable(struct device *dev,
	struct device_attribute	*devattr, const char *buf, size_t count);
static ssize_t show_pwm_interpolate(struct device *dev,
	struct device_attribute *devattr, char *buf);
static ssize_t store_pwm_interpolate(struct device *dev,
	struct device_attribute *devattr, const char *buf, size_t count);
static ssize_t show_pwm_auto_point_channel(struct device *dev,
	struct device_attribute *devattr, char *buf);
static ssize_t store_pwm_auto_point_channel(struct device *dev,
	struct device_attribute *devattr, const char *buf, size_t count);
static ssize_t show_pwm_auto_point_temp_hyst(struct device *dev,
	struct device_attribute *devattr, char *buf);
static ssize_t store_pwm_auto_point_temp_hyst(struct device *dev,
	struct device_attribute *devattr, const char *buf, size_t count);
static ssize_t show_pwm_auto_point_pwm(struct device *dev,
	struct device_attribute *devattr, char *buf);
static ssize_t store_pwm_auto_point_pwm(struct device *dev,
	struct device_attribute *devattr, const char *buf, size_t count);
static ssize_t show_pwm_auto_point_temp(struct device *dev,
	struct device_attribute *devattr, char *buf);
static ssize_t store_pwm_auto_point_temp(struct device *dev,
	struct device_attribute *devattr, const char *buf, size_t count);
/* Sysfs misc */
static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
	char *buf);

static int __devinit f71882fg_probe(struct platform_device * pdev);
static int f71882fg_remove(struct platform_device *pdev);

static struct platform_driver f71882fg_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= DRVNAME,
	},
	.probe		= f71882fg_probe,
	.remove		= f71882fg_remove,
};

static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);

/* Temp attr for the f71858fg, the f71858fg is special as it has its
   temperature indexes start at 0 (the others start at 1) */
static struct sensor_device_attribute_2 f71858fg_temp_attr[] = {
	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 0),
	SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
		store_temp_max_hyst, 0, 0),
	SENSOR_ATTR_2(temp1_max_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 0),
	SENSOR_ATTR_2(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 0),
	SENSOR_ATTR_2(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
		0, 0),
	SENSOR_ATTR_2(temp1_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 4),
	SENSOR_ATTR_2(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0, 0),
	SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1),
	SENSOR_ATTR_2(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 1),
	SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
		store_temp_max_hyst, 0, 1),
	SENSOR_ATTR_2(temp2_max_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 1),
	SENSOR_ATTR_2(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 1),
	SENSOR_ATTR_2(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
		0, 1),
	SENSOR_ATTR_2(temp2_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 5),
	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 1),
	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 2),
	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 2),
	SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
		store_temp_max_hyst, 0, 2),
	SENSOR_ATTR_2(temp3_max_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 2),
	SENSOR_ATTR_2(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 2),
	SENSOR_ATTR_2(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
		0, 2),
	SENSOR_ATTR_2(temp3_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 6),
	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
};

/* Temp attr for the standard models */
static struct sensor_device_attribute_2 fxxxx_temp_attr[] = {
	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 1),
	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 1),
	SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
		store_temp_max_hyst, 0, 1),
	/* Should really be temp1_max_alarm, but older versions did not handle
	   the max and crit alarms separately and lm_sensors v2 depends on the
	   presence of temp#_alarm files. The same goes for temp2/3 _alarm. */
	SENSOR_ATTR_2(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 1),
	SENSOR_ATTR_2(temp1_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
		store_temp_beep, 0, 1),
	SENSOR_ATTR_2(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 1),
	SENSOR_ATTR_2(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
		0, 1),
	SENSOR_ATTR_2(temp1_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 5),
	SENSOR_ATTR_2(temp1_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
		store_temp_beep, 0, 5),
	SENSOR_ATTR_2(temp1_type, S_IRUGO, show_temp_type, NULL, 0, 1),
	SENSOR_ATTR_2(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
	SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 2),
	SENSOR_ATTR_2(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 2),
	SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
		store_temp_max_hyst, 0, 2),
	/* Should be temp2_max_alarm, see temp1_alarm note */
	SENSOR_ATTR_2(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 2),
	SENSOR_ATTR_2(temp2_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
		store_temp_beep, 0, 2),
	SENSOR_ATTR_2(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 2),
	SENSOR_ATTR_2(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
		0, 2),
	SENSOR_ATTR_2(temp2_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 6),
	SENSOR_ATTR_2(temp2_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
		store_temp_beep, 0, 6),
	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 2),
	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 3),
	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 3),
	SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
		store_temp_max_hyst, 0, 3),
	/* Should be temp3_max_alarm, see temp1_alarm note */
	SENSOR_ATTR_2(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 3),
	SENSOR_ATTR_2(temp3_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
		store_temp_beep, 0, 3),
	SENSOR_ATTR_2(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 3),
	SENSOR_ATTR_2(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
		0, 3),
	SENSOR_ATTR_2(temp3_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 7),
	SENSOR_ATTR_2(temp3_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
		store_temp_beep, 0, 7),
	SENSOR_ATTR_2(temp3_type, S_IRUGO, show_temp_type, NULL, 0, 3),
	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 3),
};

/* Temp attr for the f8000
   Note on the f8000 temp_ovt (crit) is used as max, and temp_high (max)
   is used as hysteresis value to clear alarms
   Also like the f71858fg its temperature indexes start at 0
 */
static struct sensor_device_attribute_2 f8000_temp_attr[] = {
	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 0),
	SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 0),
	SENSOR_ATTR_2(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 4),
	SENSOR_ATTR_2(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0, 0),
	SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1),
	SENSOR_ATTR_2(temp2_max, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 1),
	SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 1),
	SENSOR_ATTR_2(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 5),
	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 1),
	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 2),
	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_crit,
		store_temp_crit, 0, 2),
	SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max,
		store_temp_max, 0, 2),
	SENSOR_ATTR_2(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 6),
	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
};

/* in attr for all models */
static struct sensor_device_attribute_2 fxxxx_in_attr[] = {
	SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
	SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
	SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
	SENSOR_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 0, 3),
	SENSOR_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 0, 4),
	SENSOR_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 0, 5),
	SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 6),
	SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 7),
	SENSOR_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 0, 8),
};

/* For models with in1 alarm capability */
static struct sensor_device_attribute_2 fxxxx_in1_alarm_attr[] = {
	SENSOR_ATTR_2(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max,
		0, 1),
	SENSOR_ATTR_2(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep,
		0, 1),
	SENSOR_ATTR_2(in1_alarm, S_IRUGO, show_in_alarm, NULL, 0, 1),
};

/* Fan / PWM attr common to all models */
static struct sensor_device_attribute_2 fxxxx_fan_attr[4][6] = { {
	SENSOR_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0),
	SENSOR_ATTR_2(fan1_full_speed, S_IRUGO|S_IWUSR,
		      show_fan_full_speed,
		      store_fan_full_speed, 0, 0),
	SENSOR_ATTR_2(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0, 0),
	SENSOR_ATTR_2(pwm1, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 0, 0),
	SENSOR_ATTR_2(pwm1_enable, S_IRUGO|S_IWUSR, show_pwm_enable,
		      store_pwm_enable, 0, 0),
	SENSOR_ATTR_2(pwm1_interpolate, S_IRUGO|S_IWUSR,
		      show_pwm_interpolate, store_pwm_interpolate, 0, 0),
}, {
	SENSOR_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 0, 1),
	SENSOR_ATTR_2(fan2_full_speed, S_IRUGO|S_IWUSR,
		      show_fan_full_speed,
		      store_fan_full_speed, 0, 1),
	SENSOR_ATTR_2(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 0, 1),
	SENSOR_ATTR_2(pwm2, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 0, 1),
	SENSOR_ATTR_2(pwm2_enable, S_IRUGO|S_IWUSR, show_pwm_enable,
		      store_pwm_enable, 0, 1),
	SENSOR_ATTR_2(pwm2_interpolate, S_IRUGO|S_IWUSR,
		      show_pwm_interpolate, store_pwm_interpolate, 0, 1),
}, {
	SENSOR_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 0, 2),
	SENSOR_ATTR_2(fan3_full_speed, S_IRUGO|S_IWUSR,
		      show_fan_full_speed,
		      store_fan_full_speed, 0, 2),
	SENSOR_ATTR_2(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 0, 2),
	SENSOR_ATTR_2(pwm3, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 0, 2),
	SENSOR_ATTR_2(pwm3_enable, S_IRUGO|S_IWUSR, show_pwm_enable,
		      store_pwm_enable, 0, 2),
	SENSOR_ATTR_2(pwm3_interpolate, S_IRUGO|S_IWUSR,
		      show_pwm_interpolate, store_pwm_interpolate, 0, 2),
}, {
	SENSOR_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 0, 3),
	SENSOR_ATTR_2(fan4_full_speed, S_IRUGO|S_IWUSR,
		      show_fan_full_speed,
		      store_fan_full_speed, 0, 3),
	SENSOR_ATTR_2(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 0, 3),
	SENSOR_ATTR_2(pwm4, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 0, 3),
	SENSOR_ATTR_2(pwm4_enable, S_IRUGO|S_IWUSR, show_pwm_enable,
		      store_pwm_enable, 0, 3),
	SENSOR_ATTR_2(pwm4_interpolate, S_IRUGO|S_IWUSR,
		      show_pwm_interpolate, store_pwm_interpolate, 0, 3),
} };

/* Attr for models which can beep on Fan alarm */
static struct sensor_device_attribute_2 fxxxx_fan_beep_attr[] = {
	SENSOR_ATTR_2(fan1_beep, S_IRUGO|S_IWUSR, show_fan_beep,
		store_fan_beep, 0, 0),
	SENSOR_ATTR_2(fan2_beep, S_IRUGO|S_IWUSR, show_fan_beep,
		store_fan_beep, 0, 1),
	SENSOR_ATTR_2(fan3_beep, S_IRUGO|S_IWUSR, show_fan_beep,
		store_fan_beep, 0, 2),
	SENSOR_ATTR_2(fan4_beep, S_IRUGO|S_IWUSR, show_fan_beep,
		store_fan_beep, 0, 3),
};

/* PWM attr for the f71862fg, fewer pwms and fewer zones per pwm than the
   f71858fg / f71882fg / f71889fg */
static struct sensor_device_attribute_2 f71862fg_auto_pwm_attr[] = {
	SENSOR_ATTR_2(pwm1_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 0),
	SENSOR_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 0),
	SENSOR_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 0),
	SENSOR_ATTR_2(pwm1_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 0),
	SENSOR_ATTR_2(pwm1_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 0),
	SENSOR_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 0),
	SENSOR_ATTR_2(pwm1_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 0),

	SENSOR_ATTR_2(pwm2_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 1),
	SENSOR_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 1),
	SENSOR_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 1),
	SENSOR_ATTR_2(pwm2_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 1),
	SENSOR_ATTR_2(pwm2_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 1),
	SENSOR_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 1),
	SENSOR_ATTR_2(pwm2_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 1),

	SENSOR_ATTR_2(pwm3_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 2),
	SENSOR_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 2),
	SENSOR_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 2),
	SENSOR_ATTR_2(pwm3_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 2),
	SENSOR_ATTR_2(pwm3_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 2),
	SENSOR_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 2),
	SENSOR_ATTR_2(pwm3_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 2),
};

/* PWM attr common to the f71858fg, f71882fg and f71889fg */
static struct sensor_device_attribute_2 fxxxx_auto_pwm_attr[4][14] = { {
	SENSOR_ATTR_2(pwm1_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 0),
	SENSOR_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      0, 0),
	SENSOR_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 0),
	SENSOR_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      2, 0),
	SENSOR_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      3, 0),
	SENSOR_ATTR_2(pwm1_auto_point5_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 0),
	SENSOR_ATTR_2(pwm1_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 0),
	SENSOR_ATTR_2(pwm1_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      1, 0),
	SENSOR_ATTR_2(pwm1_auto_point3_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      2, 0),
	SENSOR_ATTR_2(pwm1_auto_point4_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 0),
	SENSOR_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 0),
	SENSOR_ATTR_2(pwm1_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 1, 0),
	SENSOR_ATTR_2(pwm1_auto_point3_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 2, 0),
	SENSOR_ATTR_2(pwm1_auto_point4_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 0),
}, {
	SENSOR_ATTR_2(pwm2_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 1),
	SENSOR_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      0, 1),
	SENSOR_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 1),
	SENSOR_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      2, 1),
	SENSOR_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      3, 1),
	SENSOR_ATTR_2(pwm2_auto_point5_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 1),
	SENSOR_ATTR_2(pwm2_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 1),
	SENSOR_ATTR_2(pwm2_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      1, 1),
	SENSOR_ATTR_2(pwm2_auto_point3_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      2, 1),
	SENSOR_ATTR_2(pwm2_auto_point4_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 1),
	SENSOR_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 1),
	SENSOR_ATTR_2(pwm2_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 1, 1),
	SENSOR_ATTR_2(pwm2_auto_point3_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 2, 1),
	SENSOR_ATTR_2(pwm2_auto_point4_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 1),
}, {
	SENSOR_ATTR_2(pwm3_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 2),
	SENSOR_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      0, 2),
	SENSOR_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 2),
	SENSOR_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      2, 2),
	SENSOR_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      3, 2),
	SENSOR_ATTR_2(pwm3_auto_point5_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 2),
	SENSOR_ATTR_2(pwm3_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 2),
	SENSOR_ATTR_2(pwm3_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      1, 2),
	SENSOR_ATTR_2(pwm3_auto_point3_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      2, 2),
	SENSOR_ATTR_2(pwm3_auto_point4_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 2),
	SENSOR_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 2),
	SENSOR_ATTR_2(pwm3_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 1, 2),
	SENSOR_ATTR_2(pwm3_auto_point3_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 2, 2),
	SENSOR_ATTR_2(pwm3_auto_point4_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 2),
}, {
	SENSOR_ATTR_2(pwm4_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 3),
	SENSOR_ATTR_2(pwm4_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      0, 3),
	SENSOR_ATTR_2(pwm4_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 3),
	SENSOR_ATTR_2(pwm4_auto_point3_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      2, 3),
	SENSOR_ATTR_2(pwm4_auto_point4_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      3, 3),
	SENSOR_ATTR_2(pwm4_auto_point5_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 3),
	SENSOR_ATTR_2(pwm4_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 3),
	SENSOR_ATTR_2(pwm4_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      1, 3),
	SENSOR_ATTR_2(pwm4_auto_point3_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      2, 3),
	SENSOR_ATTR_2(pwm4_auto_point4_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 3),
	SENSOR_ATTR_2(pwm4_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 3),
	SENSOR_ATTR_2(pwm4_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 1, 3),
	SENSOR_ATTR_2(pwm4_auto_point3_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 2, 3),
	SENSOR_ATTR_2(pwm4_auto_point4_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 3),
} };

/* Fan attr specific to the f8000 (4th fan input can only measure speed) */
static struct sensor_device_attribute_2 f8000_fan_attr[] = {
	SENSOR_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 0, 3),
};

/* PWM attr for the f8000, zones mapped to temp instead of to pwm!
   Also the register block at offset A0 maps to TEMP1 (so our temp2, as the
   F8000 starts counting temps at 0), B0 maps the TEMP2 and C0 maps to TEMP0 */
static struct sensor_device_attribute_2 f8000_auto_pwm_attr[] = {
	SENSOR_ATTR_2(pwm1_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 0),
	SENSOR_ATTR_2(temp1_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      0, 2),
	SENSOR_ATTR_2(temp1_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 2),
	SENSOR_ATTR_2(temp1_auto_point3_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      2, 2),
	SENSOR_ATTR_2(temp1_auto_point4_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      3, 2),
	SENSOR_ATTR_2(temp1_auto_point5_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 2),
	SENSOR_ATTR_2(temp1_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 2),
	SENSOR_ATTR_2(temp1_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      1, 2),
	SENSOR_ATTR_2(temp1_auto_point3_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      2, 2),
	SENSOR_ATTR_2(temp1_auto_point4_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 2),
	SENSOR_ATTR_2(temp1_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 2),
	SENSOR_ATTR_2(temp1_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 1, 2),
	SENSOR_ATTR_2(temp1_auto_point3_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 2, 2),
	SENSOR_ATTR_2(temp1_auto_point4_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 2),

	SENSOR_ATTR_2(pwm2_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 1),
	SENSOR_ATTR_2(temp2_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      0, 0),
	SENSOR_ATTR_2(temp2_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 0),
	SENSOR_ATTR_2(temp2_auto_point3_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      2, 0),
	SENSOR_ATTR_2(temp2_auto_point4_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      3, 0),
	SENSOR_ATTR_2(temp2_auto_point5_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 0),
	SENSOR_ATTR_2(temp2_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 0),
	SENSOR_ATTR_2(temp2_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      1, 0),
	SENSOR_ATTR_2(temp2_auto_point3_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      2, 0),
	SENSOR_ATTR_2(temp2_auto_point4_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 0),
	SENSOR_ATTR_2(temp2_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 0),
	SENSOR_ATTR_2(temp2_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 1, 0),
	SENSOR_ATTR_2(temp2_auto_point3_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 2, 0),
	SENSOR_ATTR_2(temp2_auto_point4_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 0),

	SENSOR_ATTR_2(pwm3_auto_channels_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_channel,
		      store_pwm_auto_point_channel, 0, 2),
	SENSOR_ATTR_2(temp3_auto_point1_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      0, 1),
	SENSOR_ATTR_2(temp3_auto_point2_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      1, 1),
	SENSOR_ATTR_2(temp3_auto_point3_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      2, 1),
	SENSOR_ATTR_2(temp3_auto_point4_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      3, 1),
	SENSOR_ATTR_2(temp3_auto_point5_pwm, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
		      4, 1),
	SENSOR_ATTR_2(temp3_auto_point1_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      0, 1),
	SENSOR_ATTR_2(temp3_auto_point2_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      1, 1),
	SENSOR_ATTR_2(temp3_auto_point3_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      2, 1),
	SENSOR_ATTR_2(temp3_auto_point4_temp, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
		      3, 1),
	SENSOR_ATTR_2(temp3_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
		      show_pwm_auto_point_temp_hyst,
		      store_pwm_auto_point_temp_hyst,
		      0, 1),
	SENSOR_ATTR_2(temp3_auto_point2_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 1, 1),
	SENSOR_ATTR_2(temp3_auto_point3_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 2, 1),
	SENSOR_ATTR_2(temp3_auto_point4_temp_hyst, S_IRUGO,
		      show_pwm_auto_point_temp_hyst, NULL, 3, 1),
};

/* Super I/O functions */
static inline int superio_inb(int base, int reg)
{
	outb(reg, base);
	return inb(base + 1);
}

static int superio_inw(int base, int reg)
{
	int val;
	val  = superio_inb(base, reg) << 8;
	val |= superio_inb(base, reg + 1);
	return val;
}

static inline int superio_enter(int base)
{
	/* Don't step on other drivers' I/O space by accident */
	if (!request_muxed_region(base, 2, DRVNAME)) {
		pr_err("I/O address 0x%04x already in use\n", base);
		return -EBUSY;
	}

	/* according to the datasheet the key must be send twice! */
	outb(SIO_UNLOCK_KEY, base);
	outb(SIO_UNLOCK_KEY, base);

	return 0;
}

static inline void superio_select(int base, int ld)
{
	outb(SIO_REG_LDSEL, base);
	outb(ld, base + 1);
}

static inline void superio_exit(int base)
{
	outb(SIO_LOCK_KEY, base);
	release_region(base, 2);
}

static inline int fan_from_reg(u16 reg)
{
	return reg ? (1500000 / reg) : 0;
}

static inline u16 fan_to_reg(int fan)
{
	return fan ? (1500000 / fan) : 0;
}

static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg)
{
	u8 val;

	outb(reg, data->addr + ADDR_REG_OFFSET);
	val = inb(data->addr + DATA_REG_OFFSET);

	return val;
}

static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg)
{
	u16 val;

	val  = f71882fg_read8(data, reg) << 8;
	val |= f71882fg_read8(data, reg + 1);

	return val;
}

static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val)
{
	outb(reg, data->addr + ADDR_REG_OFFSET);
	outb(val, data->addr + DATA_REG_OFFSET);
}

static void f71882fg_write16(struct f71882fg_data *data, u8 reg, u16 val)
{
	f71882fg_write8(data, reg,     val >> 8);
	f71882fg_write8(data, reg + 1, val & 0xff);
}

static u16 f71882fg_read_temp(struct f71882fg_data *data, int nr)
{
	if (data->type == f71858fg)
		return f71882fg_read16(data, F71882FG_REG_TEMP(nr));
	else
		return f71882fg_read8(data, F71882FG_REG_TEMP(nr));
}

static struct f71882fg_data *f71882fg_update_device(struct device *dev)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int nr, reg;
	int nr_fans = (data->type == f71882fg) ? 4 : 3;

	mutex_lock(&data->update_lock);

	/* Update once every 60 seconds */
	if (time_after(jiffies, data->last_limits + 60 * HZ) ||
			!data->valid) {
		if (f71882fg_has_in1_alarm[data->type]) {
			data->in1_max =
				f71882fg_read8(data, F71882FG_REG_IN1_HIGH);
			data->in_beep =
				f71882fg_read8(data, F71882FG_REG_IN_BEEP);
		}

		/* Get High & boundary temps*/
		for (nr = data->temp_start; nr < 3 + data->temp_start; nr++) {
			data->temp_ovt[nr] = f71882fg_read8(data,
						F71882FG_REG_TEMP_OVT(nr));
			data->temp_high[nr] = f71882fg_read8(data,
						F71882FG_REG_TEMP_HIGH(nr));
		}

		if (data->type != f8000) {
			data->temp_hyst[0] = f71882fg_read8(data,
						F71882FG_REG_TEMP_HYST(0));
			data->temp_hyst[1] = f71882fg_read8(data,
						F71882FG_REG_TEMP_HYST(1));
		}

		if (data->type == f71862fg || data->type == f71882fg ||
		    data->type == f71889fg) {
			data->fan_beep = f71882fg_read8(data,
						F71882FG_REG_FAN_BEEP);
			data->temp_beep = f71882fg_read8(data,
						F71882FG_REG_TEMP_BEEP);
			reg  = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
			data->temp_type[1] = (reg & 0x02) ? 2 : 4;
			data->temp_type[2] = (reg & 0x04) ? 2 : 4;
			data->temp_type[3] = (reg & 0x08) ? 2 : 4;
		}

		data->pwm_enable = f71882fg_read8(data,
						  F71882FG_REG_PWM_ENABLE);
		data->pwm_auto_point_hyst[0] =
			f71882fg_read8(data, F71882FG_REG_FAN_HYST(0));
		data->pwm_auto_point_hyst[1] =
			f71882fg_read8(data, F71882FG_REG_FAN_HYST(1));

		for (nr = 0; nr < nr_fans; nr++) {
			data->pwm_auto_point_mapping[nr] =
			    f71882fg_read8(data,
					   F71882FG_REG_POINT_MAPPING(nr));

			if (data->type != f71862fg) {
				int point;
				for (point = 0; point < 5; point++) {
					data->pwm_auto_point_pwm[nr][point] =
						f71882fg_read8(data,
							F71882FG_REG_POINT_PWM
							(nr, point));
				}
				for (point = 0; point < 4; point++) {
					data->pwm_auto_point_temp[nr][point] =
						f71882fg_read8(data,
							F71882FG_REG_POINT_TEMP
							(nr, point));
				}
			} else {
				data->pwm_auto_point_pwm[nr][1] =
					f71882fg_read8(data,
						F71882FG_REG_POINT_PWM
						(nr, 1));
				data->pwm_auto_point_pwm[nr][4] =
					f71882fg_read8(data,
						F71882FG_REG_POINT_PWM
						(nr, 4));
				data->pwm_auto_point_temp[nr][0] =
					f71882fg_read8(data,
						F71882FG_REG_POINT_TEMP
						(nr, 0));
				data->pwm_auto_point_temp[nr][3] =
					f71882fg_read8(data,
						F71882FG_REG_POINT_TEMP
						(nr, 3));
			}
		}
		data->last_limits = jiffies;
	}

	/* Update every second */
	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
		data->temp_status = f71882fg_read8(data,
						F71882FG_REG_TEMP_STATUS);
		data->temp_diode_open = f71882fg_read8(data,
						F71882FG_REG_TEMP_DIODE_OPEN);
		for (nr = data->temp_start; nr < 3 + data->temp_start; nr++)
			data->temp[nr] = f71882fg_read_temp(data, nr);

		data->fan_status = f71882fg_read8(data,
						F71882FG_REG_FAN_STATUS);
		for (nr = 0; nr < nr_fans; nr++) {
			data->fan[nr] = f71882fg_read16(data,
						F71882FG_REG_FAN(nr));
			data->fan_target[nr] =
			    f71882fg_read16(data, F71882FG_REG_FAN_TARGET(nr));
			data->fan_full_speed[nr] =
			    f71882fg_read16(data,
					    F71882FG_REG_FAN_FULL_SPEED(nr));
			data->pwm[nr] =
			    f71882fg_read8(data, F71882FG_REG_PWM(nr));
		}
		/* The f8000 can monitor 1 more fan, but has no pwm for it */
		if (data->type == f8000)
			data->fan[3] = f71882fg_read16(data,
						F71882FG_REG_FAN(3));

		if (f71882fg_has_in1_alarm[data->type])
			data->in_status = f71882fg_read8(data,
						F71882FG_REG_IN_STATUS);
		for (nr = 0; nr < F71882FG_MAX_INS; nr++)
			if (f71882fg_has_in[data->type][nr])
				data->in[nr] = f71882fg_read8(data,
							F71882FG_REG_IN(nr));

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

	mutex_unlock(&data->update_lock);

	return data;
}

/* Sysfs Interface */
static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
	char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;
	int speed = fan_from_reg(data->fan[nr]);

	if (speed == FAN_MIN_DETECT)
		speed = 0;

	return sprintf(buf, "%d\n", speed);
}

static ssize_t show_fan_full_speed(struct device *dev,
				   struct device_attribute *devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;
	int speed = fan_from_reg(data->fan_full_speed[nr]);
	return sprintf(buf, "%d\n", speed);
}

static ssize_t store_fan_full_speed(struct device *dev,
				    struct device_attribute *devattr,
				    const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val = SENSORS_LIMIT(val, 23, 1500000);
	val = fan_to_reg(val);

	mutex_lock(&data->update_lock);
	f71882fg_write16(data, F71882FG_REG_FAN_FULL_SPEED(nr), val);
	data->fan_full_speed[nr] = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_fan_beep(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	if (data->fan_beep & (1 << nr))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static ssize_t store_fan_beep(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	unsigned long val;

	err = strict_strtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->fan_beep = f71882fg_read8(data, F71882FG_REG_FAN_BEEP);
	if (val)
		data->fan_beep |= 1 << nr;
	else
		data->fan_beep &= ~(1 << nr);

	f71882fg_write8(data, F71882FG_REG_FAN_BEEP, data->fan_beep);
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	if (data->fan_status & (1 << nr))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
	char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	return sprintf(buf, "%d\n", data->in[nr] * 8);
}

static ssize_t show_in_max(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);

	return sprintf(buf, "%d\n", data->in1_max * 8);
}

static ssize_t store_in_max(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val /= 8;
	val = SENSORS_LIMIT(val, 0, 255);

	mutex_lock(&data->update_lock);
	f71882fg_write8(data, F71882FG_REG_IN1_HIGH, val);
	data->in1_max = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_in_beep(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	if (data->in_beep & (1 << nr))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static ssize_t store_in_beep(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	unsigned long val;

	err = strict_strtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP);
	if (val)
		data->in_beep |= 1 << nr;
	else
		data->in_beep &= ~(1 << nr);

	f71882fg_write8(data, F71882FG_REG_IN_BEEP, data->in_beep);
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_in_alarm(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	if (data->in_status & (1 << nr))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
	char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;
	int sign, temp;

	if (data->type == f71858fg) {
		/* TEMP_TABLE_SEL 1 or 3 ? */
		if (data->temp_config & 1) {
			sign = data->temp[nr] & 0x0001;
			temp = (data->temp[nr] >> 5) & 0x7ff;
		} else {
			sign = data->temp[nr] & 0x8000;
			temp = (data->temp[nr] >> 5) & 0x3ff;
		}
		temp *= 125;
		if (sign)
			temp -= 128000;
	} else
		temp = data->temp[nr] * 1000;

	return sprintf(buf, "%d\n", temp);
}

static ssize_t show_temp_max(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	return sprintf(buf, "%d\n", data->temp_high[nr] * 1000);
}

static ssize_t store_temp_max(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val /= 1000;
	val = SENSORS_LIMIT(val, 0, 255);

	mutex_lock(&data->update_lock);
	f71882fg_write8(data, F71882FG_REG_TEMP_HIGH(nr), val);
	data->temp_high[nr] = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;
	int temp_max_hyst;

	mutex_lock(&data->update_lock);
	if (nr & 1)
		temp_max_hyst = data->temp_hyst[nr / 2] >> 4;
	else
		temp_max_hyst = data->temp_hyst[nr / 2] & 0x0f;
	temp_max_hyst = (data->temp_high[nr] - temp_max_hyst) * 1000;
	mutex_unlock(&data->update_lock);

	return sprintf(buf, "%d\n", temp_max_hyst);
}

static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	ssize_t ret = count;
	u8 reg;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val /= 1000;

	mutex_lock(&data->update_lock);

	/* convert abs to relative and check */
	data->temp_high[nr] = f71882fg_read8(data, F71882FG_REG_TEMP_HIGH(nr));
	val = SENSORS_LIMIT(val, data->temp_high[nr] - 15,
			    data->temp_high[nr]);
	val = data->temp_high[nr] - val;

	/* convert value to register contents */
	reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST(nr / 2));
	if (nr & 1)
		reg = (reg & 0x0f) | (val << 4);
	else
		reg = (reg & 0xf0) | val;
	f71882fg_write8(data, F71882FG_REG_TEMP_HYST(nr / 2), reg);
	data->temp_hyst[nr / 2] = reg;

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

static ssize_t show_temp_crit(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	return sprintf(buf, "%d\n", data->temp_ovt[nr] * 1000);
}

static ssize_t store_temp_crit(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val /= 1000;
	val = SENSORS_LIMIT(val, 0, 255);

	mutex_lock(&data->update_lock);
	f71882fg_write8(data, F71882FG_REG_TEMP_OVT(nr), val);
	data->temp_ovt[nr] = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;
	int temp_crit_hyst;

	mutex_lock(&data->update_lock);
	if (nr & 1)
		temp_crit_hyst = data->temp_hyst[nr / 2] >> 4;
	else
		temp_crit_hyst = data->temp_hyst[nr / 2] & 0x0f;
	temp_crit_hyst = (data->temp_ovt[nr] - temp_crit_hyst) * 1000;
	mutex_unlock(&data->update_lock);

	return sprintf(buf, "%d\n", temp_crit_hyst);
}

static ssize_t show_temp_type(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	return sprintf(buf, "%d\n", data->temp_type[nr]);
}

static ssize_t show_temp_beep(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	if (data->temp_beep & (1 << nr))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static ssize_t store_temp_beep(struct device *dev, struct device_attribute
	*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	unsigned long val;

	err = strict_strtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP);
	if (val)
		data->temp_beep |= 1 << nr;
	else
		data->temp_beep &= ~(1 << nr);

	f71882fg_write8(data, F71882FG_REG_TEMP_BEEP, data->temp_beep);
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	if (data->temp_status & (1 << nr))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static ssize_t show_temp_fault(struct device *dev, struct device_attribute
	*devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	if (data->temp_diode_open & (1 << nr))
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}

static ssize_t show_pwm(struct device *dev,
			struct device_attribute *devattr, char *buf)
{
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int val, nr = to_sensor_dev_attr_2(devattr)->index;
	mutex_lock(&data->update_lock);
	if (data->pwm_enable & (1 << (2 * nr)))
		/* PWM mode */
		val = data->pwm[nr];
	else {
		/* RPM mode */
		val = 255 * fan_from_reg(data->fan_target[nr])
			/ fan_from_reg(data->fan_full_speed[nr]);
	}
	mutex_unlock(&data->update_lock);
	return sprintf(buf, "%d\n", val);
}

static ssize_t store_pwm(struct device *dev,
			 struct device_attribute *devattr, const char *buf,
			 size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val = SENSORS_LIMIT(val, 0, 255);

	mutex_lock(&data->update_lock);
	data->pwm_enable = f71882fg_read8(data, F71882FG_REG_PWM_ENABLE);
	if ((data->type == f8000 && ((data->pwm_enable >> 2 * nr) & 3) != 2) ||
	    (data->type != f8000 && !((data->pwm_enable >> 2 * nr) & 2))) {
		count = -EROFS;
		goto leave;
	}
	if (data->pwm_enable & (1 << (2 * nr))) {
		/* PWM mode */
		f71882fg_write8(data, F71882FG_REG_PWM(nr), val);
		data->pwm[nr] = val;
	} else {
		/* RPM mode */
		int target, full_speed;
		full_speed = f71882fg_read16(data,
					     F71882FG_REG_FAN_FULL_SPEED(nr));
		target = fan_to_reg(val * fan_from_reg(full_speed) / 255);
		f71882fg_write16(data, F71882FG_REG_FAN_TARGET(nr), target);
		data->fan_target[nr] = target;
		data->fan_full_speed[nr] = full_speed;
	}
leave:
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_pwm_enable(struct device *dev,
			       struct device_attribute *devattr, char *buf)
{
	int result = 0;
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	switch ((data->pwm_enable >> 2 * nr) & 3) {
	case 0:
	case 1:
		result = 2; /* Normal auto mode */
		break;
	case 2:
		result = 1; /* Manual mode */
		break;
	case 3:
		if (data->type == f8000)
			result = 3; /* Thermostat mode */
		else
			result = 1; /* Manual mode */
		break;
	}

	return sprintf(buf, "%d\n", result);
}

static ssize_t store_pwm_enable(struct device *dev, struct device_attribute
				*devattr, const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	/* Special case for F8000 pwm channel 3 which only does auto mode */
	if (data->type == f8000 && nr == 2 && val != 2)
		return -EINVAL;

	mutex_lock(&data->update_lock);
	data->pwm_enable = f71882fg_read8(data, F71882FG_REG_PWM_ENABLE);
	/* Special case for F8000 auto PWM mode / Thermostat mode */
	if (data->type == f8000 && ((data->pwm_enable >> 2 * nr) & 1)) {
		switch (val) {
		case 2:
			data->pwm_enable &= ~(2 << (2 * nr));
			break;		/* Normal auto mode */
		case 3:
			data->pwm_enable |= 2 << (2 * nr);
			break;		/* Thermostat mode */
		default:
			count = -EINVAL;
			goto leave;
		}
	} else {
		switch (val) {
		case 1:
			/* The f71858fg does not support manual RPM mode */
			if (data->type == f71858fg &&
			    ((data->pwm_enable >> (2 * nr)) & 1)) {
				count = -EINVAL;
				goto leave;
			}
			data->pwm_enable |= 2 << (2 * nr);
			break;		/* Manual */
		case 2:
			data->pwm_enable &= ~(2 << (2 * nr));
			break;		/* Normal auto mode */
		default:
			count = -EINVAL;
			goto leave;
		}
	}
	f71882fg_write8(data, F71882FG_REG_PWM_ENABLE, data->pwm_enable);
leave:
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_pwm_auto_point_pwm(struct device *dev,
				       struct device_attribute *devattr,
				       char *buf)
{
	int result;
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int pwm = to_sensor_dev_attr_2(devattr)->index;
	int point = to_sensor_dev_attr_2(devattr)->nr;

	mutex_lock(&data->update_lock);
	if (data->pwm_enable & (1 << (2 * pwm))) {
		/* PWM mode */
		result = data->pwm_auto_point_pwm[pwm][point];
	} else {
		/* RPM mode */
		result = 32 * 255 / (32 + data->pwm_auto_point_pwm[pwm][point]);
	}
	mutex_unlock(&data->update_lock);

	return sprintf(buf, "%d\n", result);
}

static ssize_t store_pwm_auto_point_pwm(struct device *dev,
					struct device_attribute *devattr,
					const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, pwm = to_sensor_dev_attr_2(devattr)->index;
	int point = to_sensor_dev_attr_2(devattr)->nr;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val = SENSORS_LIMIT(val, 0, 255);

	mutex_lock(&data->update_lock);
	data->pwm_enable = f71882fg_read8(data, F71882FG_REG_PWM_ENABLE);
	if (data->pwm_enable & (1 << (2 * pwm))) {
		/* PWM mode */
	} else {
		/* RPM mode */
		if (val < 29)	/* Prevent negative numbers */
			val = 255;
		else
			val = (255 - val) * 32 / val;
	}
	f71882fg_write8(data, F71882FG_REG_POINT_PWM(pwm, point), val);
	data->pwm_auto_point_pwm[pwm][point] = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_pwm_auto_point_temp_hyst(struct device *dev,
					     struct device_attribute *devattr,
					     char *buf)
{
	int result = 0;
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;
	int point = to_sensor_dev_attr_2(devattr)->nr;

	mutex_lock(&data->update_lock);
	if (nr & 1)
		result = data->pwm_auto_point_hyst[nr / 2] >> 4;
	else
		result = data->pwm_auto_point_hyst[nr / 2] & 0x0f;
	result = 1000 * (data->pwm_auto_point_temp[nr][point] - result);
	mutex_unlock(&data->update_lock);

	return sprintf(buf, "%d\n", result);
}

static ssize_t store_pwm_auto_point_temp_hyst(struct device *dev,
					      struct device_attribute *devattr,
					      const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	int point = to_sensor_dev_attr_2(devattr)->nr;
	u8 reg;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val /= 1000;

	mutex_lock(&data->update_lock);
	data->pwm_auto_point_temp[nr][point] =
		f71882fg_read8(data, F71882FG_REG_POINT_TEMP(nr, point));
	val = SENSORS_LIMIT(val, data->pwm_auto_point_temp[nr][point] - 15,
				data->pwm_auto_point_temp[nr][point]);
	val = data->pwm_auto_point_temp[nr][point] - val;

	reg = f71882fg_read8(data, F71882FG_REG_FAN_HYST(nr / 2));
	if (nr & 1)
		reg = (reg & 0x0f) | (val << 4);
	else
		reg = (reg & 0xf0) | val;

	f71882fg_write8(data, F71882FG_REG_FAN_HYST(nr / 2), reg);
	data->pwm_auto_point_hyst[nr / 2] = reg;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_pwm_interpolate(struct device *dev,
				    struct device_attribute *devattr, char *buf)
{
	int result;
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	result = (data->pwm_auto_point_mapping[nr] >> 4) & 1;

	return sprintf(buf, "%d\n", result);
}

static ssize_t store_pwm_interpolate(struct device *dev,
				     struct device_attribute *devattr,
				     const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	unsigned long val;

	err = strict_strtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	data->pwm_auto_point_mapping[nr] =
		f71882fg_read8(data, F71882FG_REG_POINT_MAPPING(nr));
	if (val)
		val = data->pwm_auto_point_mapping[nr] | (1 << 4);
	else
		val = data->pwm_auto_point_mapping[nr] & (~(1 << 4));
	f71882fg_write8(data, F71882FG_REG_POINT_MAPPING(nr), val);
	data->pwm_auto_point_mapping[nr] = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_pwm_auto_point_channel(struct device *dev,
					   struct device_attribute *devattr,
					   char *buf)
{
	int result;
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int nr = to_sensor_dev_attr_2(devattr)->index;

	result = 1 << ((data->pwm_auto_point_mapping[nr] & 3) -
		       data->temp_start);

	return sprintf(buf, "%d\n", result);
}

static ssize_t store_pwm_auto_point_channel(struct device *dev,
					    struct device_attribute *devattr,
					    const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, nr = to_sensor_dev_attr_2(devattr)->index;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	switch (val) {
	case 1:
		val = 0;
		break;
	case 2:
		val = 1;
		break;
	case 4:
		val = 2;
		break;
	default:
		return -EINVAL;
	}
	val += data->temp_start;
	mutex_lock(&data->update_lock);
	data->pwm_auto_point_mapping[nr] =
		f71882fg_read8(data, F71882FG_REG_POINT_MAPPING(nr));
	val = (data->pwm_auto_point_mapping[nr] & 0xfc) | val;
	f71882fg_write8(data, F71882FG_REG_POINT_MAPPING(nr), val);
	data->pwm_auto_point_mapping[nr] = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_pwm_auto_point_temp(struct device *dev,
					struct device_attribute *devattr,
					char *buf)
{
	int result;
	struct f71882fg_data *data = f71882fg_update_device(dev);
	int pwm = to_sensor_dev_attr_2(devattr)->index;
	int point = to_sensor_dev_attr_2(devattr)->nr;

	result = data->pwm_auto_point_temp[pwm][point];
	return sprintf(buf, "%d\n", 1000 * result);
}

static ssize_t store_pwm_auto_point_temp(struct device *dev,
					 struct device_attribute *devattr,
					 const char *buf, size_t count)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	int err, pwm = to_sensor_dev_attr_2(devattr)->index;
	int point = to_sensor_dev_attr_2(devattr)->nr;
	long val;

	err = strict_strtol(buf, 10, &val);
	if (err)
		return err;

	val /= 1000;

	if (data->auto_point_temp_signed)
		val = SENSORS_LIMIT(val, -128, 127);
	else
		val = SENSORS_LIMIT(val, 0, 127);

	mutex_lock(&data->update_lock);
	f71882fg_write8(data, F71882FG_REG_POINT_TEMP(pwm, point), val);
	data->pwm_auto_point_temp[pwm][point] = val;
	mutex_unlock(&data->update_lock);

	return count;
}

static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
	char *buf)
{
	struct f71882fg_data *data = dev_get_drvdata(dev);
	return sprintf(buf, "%s\n", f71882fg_names[data->type]);
}

static int __devinit f71882fg_create_sysfs_files(struct platform_device *pdev,
	struct sensor_device_attribute_2 *attr, int count)
{
	int err, i;

	for (i = 0; i < count; i++) {
		err = device_create_file(&pdev->dev, &attr[i].dev_attr);
		if (err)
			return err;
	}
	return 0;
}

static void f71882fg_remove_sysfs_files(struct platform_device *pdev,
	struct sensor_device_attribute_2 *attr, int count)
{
	int i;

	for (i = 0; i < count; i++)
		device_remove_file(&pdev->dev, &attr[i].dev_attr);
}

static int __devinit f71882fg_probe(struct platform_device *pdev)
{
	struct f71882fg_data *data;
	struct f71882fg_sio_data *sio_data = pdev->dev.platform_data;
	int err, i, nr_fans = (sio_data->type == f71882fg) ? 4 : 3;
	u8 start_reg, reg;

	data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
	data->type = sio_data->type;
	data->temp_start =
	    (data->type == f71858fg || data->type == f8000) ? 0 : 1;
	mutex_init(&data->update_lock);
	platform_set_drvdata(pdev, data);

	start_reg = f71882fg_read8(data, F71882FG_REG_START);
	if (start_reg & 0x04) {
		dev_warn(&pdev->dev, "Hardware monitor is powered down\n");
		err = -ENODEV;
		goto exit_free;
	}
	if (!(start_reg & 0x03)) {
		dev_warn(&pdev->dev, "Hardware monitoring not activated\n");
		err = -ENODEV;
		goto exit_free;
	}

	/* Register sysfs interface files */
	err = device_create_file(&pdev->dev, &dev_attr_name);
	if (err)
		goto exit_unregister_sysfs;

	if (start_reg & 0x01) {
		switch (data->type) {
		case f71858fg:
			data->temp_config =
				f71882fg_read8(data, F71882FG_REG_TEMP_CONFIG);
			if (data->temp_config & 0x10)
				/* The f71858fg temperature alarms behave as
				   the f8000 alarms in this mode */
				err = f71882fg_create_sysfs_files(pdev,
					f8000_temp_attr,
					ARRAY_SIZE(f8000_temp_attr));
			else
				err = f71882fg_create_sysfs_files(pdev,
					f71858fg_temp_attr,
					ARRAY_SIZE(f71858fg_temp_attr));
			break;
		case f8000:
			err = f71882fg_create_sysfs_files(pdev,
					f8000_temp_attr,
					ARRAY_SIZE(f8000_temp_attr));
			break;
		default:
			err = f71882fg_create_sysfs_files(pdev,
					fxxxx_temp_attr,
					ARRAY_SIZE(fxxxx_temp_attr));
		}
		if (err)
			goto exit_unregister_sysfs;

		for (i = 0; i < F71882FG_MAX_INS; i++) {
			if (f71882fg_has_in[data->type][i]) {
				err = device_create_file(&pdev->dev,
						&fxxxx_in_attr[i].dev_attr);
				if (err)
					goto exit_unregister_sysfs;
			}
		}
		if (f71882fg_has_in1_alarm[data->type]) {
			err = f71882fg_create_sysfs_files(pdev,
					fxxxx_in1_alarm_attr,
					ARRAY_SIZE(fxxxx_in1_alarm_attr));
			if (err)
				goto exit_unregister_sysfs;
		}
	}

	if (start_reg & 0x02) {
		switch (data->type) {
		case f71889fg:
			reg = f71882fg_read8(data, F71882FG_REG_FAN_FAULT_T);
			if (reg & F71882FG_FAN_NEG_TEMP_EN)
				data->auto_point_temp_signed = 1;
			break;
		default:
			break;
		}

		data->pwm_enable =
			f71882fg_read8(data, F71882FG_REG_PWM_ENABLE);

		/* Sanity check the pwm settings */
		switch (data->type) {
		case f71858fg:
			err = 0;
			for (i = 0; i < nr_fans; i++)
				if (((data->pwm_enable >> (i * 2)) & 3) == 3)
					err = 1;
			break;
		case f71862fg:
			err = (data->pwm_enable & 0x15) != 0x15;
			break;
		case f71882fg:
		case f71889fg:
			err = 0;
			break;
		case f8000:
			err = data->pwm_enable & 0x20;
			break;
		}
		if (err) {
			dev_err(&pdev->dev,
				"Invalid (reserved) pwm settings: 0x%02x\n",
				(unsigned int)data->pwm_enable);
			err = -ENODEV;
			goto exit_unregister_sysfs;
		}

		err = f71882fg_create_sysfs_files(pdev, &fxxxx_fan_attr[0][0],
				ARRAY_SIZE(fxxxx_fan_attr[0]) * nr_fans);
		if (err)
			goto exit_unregister_sysfs;

		if (data->type == f71862fg || data->type == f71882fg ||
		    data->type == f71889fg) {
			err = f71882fg_create_sysfs_files(pdev,
					fxxxx_fan_beep_attr, nr_fans);
			if (err)
				goto exit_unregister_sysfs;
		}

		switch (data->type) {
		case f71862fg:
			err = f71882fg_create_sysfs_files(pdev,
					f71862fg_auto_pwm_attr,
					ARRAY_SIZE(f71862fg_auto_pwm_attr));
			break;
		case f8000:
			err = f71882fg_create_sysfs_files(pdev,
					f8000_fan_attr,
					ARRAY_SIZE(f8000_fan_attr));
			if (err)
				goto exit_unregister_sysfs;
			err = f71882fg_create_sysfs_files(pdev,
					f8000_auto_pwm_attr,
					ARRAY_SIZE(f8000_auto_pwm_attr));
			break;
		case f71889fg:
			for (i = 0; i < nr_fans; i++) {
				data->pwm_auto_point_mapping[i] =
					f71882fg_read8(data,
						F71882FG_REG_POINT_MAPPING(i));
				if (data->pwm_auto_point_mapping[i] & 0x80)
					break;
			}
			if (i != nr_fans) {
				dev_warn(&pdev->dev,
					 "Auto pwm controlled by raw digital "
					 "data, disabling pwm auto_point "
					 "sysfs attributes\n");
				break;
			}
			/* fall through */
		default: /* f71858fg / f71882fg */
			err = f71882fg_create_sysfs_files(pdev,
				&fxxxx_auto_pwm_attr[0][0],
				ARRAY_SIZE(fxxxx_auto_pwm_attr[0]) * nr_fans);
		}
		if (err)
			goto exit_unregister_sysfs;

		for (i = 0; i < nr_fans; i++)
			dev_info(&pdev->dev, "Fan: %d is in %s mode\n", i + 1,
				 (data->pwm_enable & (1 << 2 * i)) ?
				 "duty-cycle" : "RPM");
	}

	data->hwmon_dev = hwmon_device_register(&pdev->dev);
	if (IS_ERR(data->hwmon_dev)) {
		err = PTR_ERR(data->hwmon_dev);
		data->hwmon_dev = NULL;
		goto exit_unregister_sysfs;
	}

	return 0;

exit_unregister_sysfs:
	f71882fg_remove(pdev); /* Will unregister the sysfs files for us */
	return err; /* f71882fg_remove() also frees our data */
exit_free:
	kfree(data);
	return err;
}

static int f71882fg_remove(struct platform_device *pdev)
{
	struct f71882fg_data *data = platform_get_drvdata(pdev);
	int i, nr_fans = (data->type == f71882fg) ? 4 : 3;
	u8 start_reg = f71882fg_read8(data, F71882FG_REG_START);

	if (data->hwmon_dev)
		hwmon_device_unregister(data->hwmon_dev);

	device_remove_file(&pdev->dev, &dev_attr_name);

	if (start_reg & 0x01) {
		switch (data->type) {
		case f71858fg:
			if (data->temp_config & 0x10)
				f71882fg_remove_sysfs_files(pdev,
					f8000_temp_attr,
					ARRAY_SIZE(f8000_temp_attr));
			else
				f71882fg_remove_sysfs_files(pdev,
					f71858fg_temp_attr,
					ARRAY_SIZE(f71858fg_temp_attr));
			break;
		case f8000:
			f71882fg_remove_sysfs_files(pdev,
					f8000_temp_attr,
					ARRAY_SIZE(f8000_temp_attr));
			break;
		default:
			f71882fg_remove_sysfs_files(pdev,
					fxxxx_temp_attr,
					ARRAY_SIZE(fxxxx_temp_attr));
		}
		for (i = 0; i < F71882FG_MAX_INS; i++) {
			if (f71882fg_has_in[data->type][i]) {
				device_remove_file(&pdev->dev,
						&fxxxx_in_attr[i].dev_attr);
			}
		}
		if (f71882fg_has_in1_alarm[data->type]) {
			f71882fg_remove_sysfs_files(pdev,
					fxxxx_in1_alarm_attr,
					ARRAY_SIZE(fxxxx_in1_alarm_attr));
		}
	}

	if (start_reg & 0x02) {
		f71882fg_remove_sysfs_files(pdev, &fxxxx_fan_attr[0][0],
				ARRAY_SIZE(fxxxx_fan_attr[0]) * nr_fans);

		if (data->type == f71862fg || data->type == f71882fg ||
		    data->type == f71889fg)
			f71882fg_remove_sysfs_files(pdev,
					fxxxx_fan_beep_attr, nr_fans);

		switch (data->type) {
		case f71862fg:
			f71882fg_remove_sysfs_files(pdev,
					f71862fg_auto_pwm_attr,
					ARRAY_SIZE(f71862fg_auto_pwm_attr));
			break;
		case f8000:
			f71882fg_remove_sysfs_files(pdev,
					f8000_fan_attr,
					ARRAY_SIZE(f8000_fan_attr));
			f71882fg_remove_sysfs_files(pdev,
					f8000_auto_pwm_attr,
					ARRAY_SIZE(f8000_auto_pwm_attr));
			break;
		default: /* f71858fg / f71882fg / f71889fg */
			f71882fg_remove_sysfs_files(pdev,
				&fxxxx_auto_pwm_attr[0][0],
				ARRAY_SIZE(fxxxx_auto_pwm_attr[0]) * nr_fans);
		}
	}

	platform_set_drvdata(pdev, NULL);
	kfree(data);

	return 0;
}

static int __init f71882fg_find(int sioaddr, unsigned short *address,
	struct f71882fg_sio_data *sio_data)
{
	u16 devid;
	int err = superio_enter(sioaddr);
	if (err)
		return err;

	devid = superio_inw(sioaddr, SIO_REG_MANID);
	if (devid != SIO_FINTEK_ID) {
		pr_debug("Not a Fintek device\n");
		err = -ENODEV;
		goto exit;
	}

	devid = force_id ? force_id : superio_inw(sioaddr, SIO_REG_DEVID);
	switch (devid) {
	case SIO_F71858_ID:
		sio_data->type = f71858fg;
		break;
	case SIO_F71862_ID:
		sio_data->type = f71862fg;
		break;
	case SIO_F71882_ID:
		sio_data->type = f71882fg;
		break;
	case SIO_F71889_ID:
		sio_data->type = f71889fg;
		break;
	case SIO_F8000_ID:
		sio_data->type = f8000;
		break;
	default:
		pr_info("Unsupported Fintek device: %04x\n",
			(unsigned int)devid);
		err = -ENODEV;
		goto exit;
	}

	if (sio_data->type == f71858fg)
		superio_select(sioaddr, SIO_F71858FG_LD_HWM);
	else
		superio_select(sioaddr, SIO_F71882FG_LD_HWM);

	if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) {
		pr_warn("Device not activated\n");
		err = -ENODEV;
		goto exit;
	}

	*address = superio_inw(sioaddr, SIO_REG_ADDR);
	if (*address == 0) {
		pr_warn("Base address not set\n");
		err = -ENODEV;
		goto exit;
	}
	*address &= ~(REGION_LENGTH - 1);	/* Ignore 3 LSB */

	err = 0;
	pr_info("Found %s chip at %#x, revision %d\n",
		f71882fg_names[sio_data->type],	(unsigned int)*address,
		(int)superio_inb(sioaddr, SIO_REG_DEVREV));
exit:
	superio_exit(sioaddr);
	return err;
}

static int __init f71882fg_device_add(unsigned short address,
	const struct f71882fg_sio_data *sio_data)
{
	struct resource res = {
		.start	= address,
		.end	= address + REGION_LENGTH - 1,
		.flags	= IORESOURCE_IO,
	};
	int err;

	f71882fg_pdev = platform_device_alloc(DRVNAME, address);
	if (!f71882fg_pdev)
		return -ENOMEM;

	res.name = f71882fg_pdev->name;
	err = acpi_check_resource_conflict(&res);
	if (err)
		goto exit_device_put;

	err = platform_device_add_resources(f71882fg_pdev, &res, 1);
	if (err) {
		pr_err("Device resource addition failed\n");
		goto exit_device_put;
	}

	err = platform_device_add_data(f71882fg_pdev, sio_data,
				       sizeof(struct f71882fg_sio_data));
	if (err) {
		pr_err("Platform data allocation failed\n");
		goto exit_device_put;
	}

	err = platform_device_add(f71882fg_pdev);
	if (err) {
		pr_err("Device addition failed\n");
		goto exit_device_put;
	}

	return 0;

exit_device_put:
	platform_device_put(f71882fg_pdev);

	return err;
}

static int __init f71882fg_init(void)
{
	int err = -ENODEV;
	unsigned short address;
	struct f71882fg_sio_data sio_data;

	memset(&sio_data, 0, sizeof(sio_data));

	if (f71882fg_find(0x2e, &address, &sio_data) &&
	    f71882fg_find(0x4e, &address, &sio_data))
		goto exit;

	err = platform_driver_register(&f71882fg_driver);
	if (err)
		goto exit;

	err = f71882fg_device_add(address, &sio_data);
	if (err)
		goto exit_driver;

	return 0;

exit_driver:
	platform_driver_unregister(&f71882fg_driver);
exit:
	return err;
}

static void __exit f71882fg_exit(void)
{
	platform_device_unregister(f71882fg_pdev);
	platform_driver_unregister(&f71882fg_driver);
}

MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver");
MODULE_AUTHOR("Hans Edgington, Hans de Goede (hdegoede@redhat.com)");
MODULE_LICENSE("GPL");

module_init(f71882fg_init);
module_exit(f71882fg_exit);