root/drivers/hwmon/f71882fg.c
// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
 *   Copyright (C) 2006 by Hans Edgington <hans@edgington.nl>              *
 *   Copyright (C) 2007-2011 Hans de Goede <hdegoede@redhat.com>           *
 *                                                                         *
 ***************************************************************************/

#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_F71808E_ID          0x0901  /* Chipset ID */
#define SIO_F71808A_ID          0x1001  /* Chipset ID */
#define SIO_F71858_ID           0x0507  /* Chipset ID */
#define SIO_F71862_ID           0x0601  /* Chipset ID */
#define SIO_F71868_ID           0x1106  /* Chipset ID */
#define SIO_F71869_ID           0x0814  /* Chipset ID */
#define SIO_F71869A_ID          0x1007  /* Chipset ID */
#define SIO_F71882_ID           0x0541  /* Chipset ID */
#define SIO_F71889_ID           0x0723  /* Chipset ID */
#define SIO_F71889E_ID          0x0909  /* Chipset ID */
#define SIO_F71889A_ID          0x1005  /* Chipset ID */
#define SIO_F8000_ID            0x0581  /* Chipset ID */
#define SIO_F81768D_ID          0x1210  /* Chipset ID */
#define SIO_F81865_ID           0x0704  /* Chipset ID */
#define SIO_F81866_ID           0x1010  /* Chipset ID */
#define SIO_F71858AD_ID         0x0903  /* Chipset ID */
#define SIO_F81966_ID           0x1502  /* Chipset ID */
#define SIO_F81968_ID           0x1806  /* Chipset ID */

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

#define F71882FG_REG_IN_STATUS          0x12 /* f7188x only */
#define F71882FG_REG_IN_BEEP            0x13 /* f7188x only */
#define F71882FG_REG_IN(nr)             (0x20  + (nr))
#define F71882FG_REG_IN1_HIGH           0x32 /* f7188x only */

#define F81866_REG_IN_STATUS            0x16 /* F81866 only */
#define F81866_REG_IN_BEEP                      0x17 /* F81866 only */
#define F81866_REG_IN1_HIGH             0x3a /* F81866 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_FAN_PROG_SEL           0x80

#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                11

#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 { f71808e, f71808a, f71858fg, f71862fg, f71868a, f71869, f71869a,
        f71882fg, f71889fg, f71889ed, f71889a, f8000, f81768d, f81865f,
        f81866a};

static const char *const f71882fg_names[] = {
        "f71808e",
        "f71808a",
        "f71858fg",
        "f71862fg",
        "f71868a",
        "f71869", /* Both f71869f and f71869e, reg. compatible and same id */
        "f71869a",
        "f71882fg",
        "f71889fg", /* f81801u too, same id */
        "f71889ed",
        "f71889a",
        "f8000",
        "f81768d",
        "f81865f",
        "f81866a",
};

static const char f71882fg_has_in[][F71882FG_MAX_INS] = {
        [f71808e]       = { 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0 },
        [f71808a]       = { 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0 },
        [f71858fg]      = { 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
        [f71862fg]      = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
        [f71868a]       = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
        [f71869]        = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
        [f71869a]       = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
        [f71882fg]      = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
        [f71889fg]      = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
        [f71889ed]      = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
        [f71889a]       = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
        [f8000]         = { 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
        [f81768d]       = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
        [f81865f]       = { 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0 },
        [f81866a]       = { 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0 },
};

static const char f71882fg_has_in1_alarm[] = {
        [f71808e]       = 0,
        [f71808a]       = 0,
        [f71858fg]      = 0,
        [f71862fg]      = 0,
        [f71868a]       = 0,
        [f71869]        = 0,
        [f71869a]       = 0,
        [f71882fg]      = 1,
        [f71889fg]      = 1,
        [f71889ed]      = 1,
        [f71889a]       = 1,
        [f8000]         = 0,
        [f81768d]       = 1,
        [f81865f]       = 1,
        [f81866a]       = 1,
};

static const char f71882fg_fan_has_beep[] = {
        [f71808e]       = 0,
        [f71808a]       = 0,
        [f71858fg]      = 0,
        [f71862fg]      = 1,
        [f71868a]       = 1,
        [f71869]        = 1,
        [f71869a]       = 1,
        [f71882fg]      = 1,
        [f71889fg]      = 1,
        [f71889ed]      = 1,
        [f71889a]       = 1,
        [f8000]         = 0,
        [f81768d]       = 1,
        [f81865f]       = 1,
        [f81866a]       = 1,
};

static const char f71882fg_nr_fans[] = {
        [f71808e]       = 3,
        [f71808a]       = 2, /* +1 fan which is monitor + simple pwm only */
        [f71858fg]      = 3,
        [f71862fg]      = 3,
        [f71868a]       = 3,
        [f71869]        = 3,
        [f71869a]       = 3,
        [f71882fg]      = 4,
        [f71889fg]      = 3,
        [f71889ed]      = 3,
        [f71889a]       = 3,
        [f8000]         = 3, /* +1 fan which is monitor only */
        [f81768d]       = 3,
        [f81865f]       = 2,
        [f81866a]       = 3,
};

static const char f71882fg_temp_has_beep[] = {
        [f71808e]       = 0,
        [f71808a]       = 1,
        [f71858fg]      = 0,
        [f71862fg]      = 1,
        [f71868a]       = 1,
        [f71869]        = 1,
        [f71869a]       = 1,
        [f71882fg]      = 1,
        [f71889fg]      = 1,
        [f71889ed]      = 1,
        [f71889a]       = 1,
        [f8000]         = 0,
        [f81768d]       = 1,
        [f81865f]       = 1,
        [f81866a]       = 1,
};

static const char f71882fg_nr_temps[] = {
        [f71808e]       = 2,
        [f71808a]       = 2,
        [f71858fg]      = 3,
        [f71862fg]      = 3,
        [f71868a]       = 3,
        [f71869]        = 3,
        [f71869a]       = 3,
        [f71882fg]      = 3,
        [f71889fg]      = 3,
        [f71889ed]      = 3,
        [f71889a]       = 3,
        [f8000]         = 3,
        [f81768d]       = 3,
        [f81865f]       = 2,
        [f81866a]       = 3,
};

static struct platform_device *f71882fg_pdev;

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) */
        bool valid;                     /* true 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 max 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];
};

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 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 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_fans = f71882fg_nr_fans[data->type];
        int nr_temps = f71882fg_nr_temps[data->type];
        int nr, reg, point;

        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]) {
                        if (data->type == f81866a) {
                                data->in1_max =
                                        f71882fg_read8(data,
                                                       F81866_REG_IN1_HIGH);
                                data->in_beep =
                                        f71882fg_read8(data,
                                                       F81866_REG_IN_BEEP);
                        } else {
                                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 < nr_temps + 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));
                }
                /* All but the f71858fg / f8000 have this register */
                if ((data->type != f71858fg) && (data->type != f8000)) {
                        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;
                }

                if (f71882fg_fan_has_beep[data->type])
                        data->fan_beep = f71882fg_read8(data,
                                                F71882FG_REG_FAN_BEEP);

                if (f71882fg_temp_has_beep[data->type])
                        data->temp_beep = f71882fg_read8(data,
                                                F71882FG_REG_TEMP_BEEP);

                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));

                        switch (data->type) {
                        default:
                                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));
                                }
                                break;
                        case f71808e:
                        case f71869:
                                data->pwm_auto_point_pwm[nr][0] =
                                        f71882fg_read8(data,
                                                F71882FG_REG_POINT_PWM(nr, 0));
                                fallthrough;
                        case f71862fg:
                                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));
                                break;
                        }
                }
                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 < nr_temps + 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));
                }
                /* Some models have 1 more fan with limited capabilities */
                if (data->type == f71808a) {
                        data->fan[2] = f71882fg_read16(data,
                                                F71882FG_REG_FAN(2));
                        data->pwm[2] = f71882fg_read8(data,
                                                        F71882FG_REG_PWM(2));
                }
                if (data->type == f8000)
                        data->fan[3] = f71882fg_read16(data,
                                                F71882FG_REG_FAN(3));

                if (f71882fg_has_in1_alarm[data->type]) {
                        if (data->type == f81866a)
                                data->in_status = f71882fg_read8(data,
                                                F81866_REG_IN_STATUS);

                        else
                                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 = true;
        }

        mutex_unlock(&data->update_lock);

        return data;
}

static ssize_t name_show(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 DEVICE_ATTR_RO(name);

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 = ((s8)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 = kstrtol(buf, 10, &val);
        if (err)
                return err;

        val /= 1000;
        val = clamp_val(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 = kstrtol(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 = clamp_val(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_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_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 = kstrtol(buf, 10, &val);
        if (err)
                return err;

        val /= 1000;
        val = clamp_val(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_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");
}

/*
 * 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_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),
};

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]);
}

/* Temp attr for the standard models */
static struct sensor_device_attribute_2 fxxxx_temp_attr[3][9] = { {
        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_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_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_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_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_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_type, S_IRUGO, show_temp_type, NULL, 0, 3),
        SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 3),
} };

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 = kstrtoul(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;
}

/* Temp attr for models which can beep on temp alarm */
static struct sensor_device_attribute_2 fxxxx_temp_beep_attr[3][2] = { {
        SENSOR_ATTR_2(temp1_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 1),
        SENSOR_ATTR_2(temp1_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 5),
}, {
        SENSOR_ATTR_2(temp2_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 2),
        SENSOR_ATTR_2(temp2_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 6),
}, {
        SENSOR_ATTR_2(temp3_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 3),
        SENSOR_ATTR_2(temp3_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 7),
} };

static struct sensor_device_attribute_2 f81866_temp_beep_attr[3][2] = { {
        SENSOR_ATTR_2(temp1_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 0),
        SENSOR_ATTR_2(temp1_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 4),
}, {
        SENSOR_ATTR_2(temp2_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 1),
        SENSOR_ATTR_2(temp2_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 5),
}, {
        SENSOR_ATTR_2(temp3_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 2),
        SENSOR_ATTR_2(temp3_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
                store_temp_beep, 0, 6),
} };

/*
 * 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_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),
};

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);
}

/* 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),
        SENSOR_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 0, 9),
        SENSOR_ATTR_2(in10_input, S_IRUGO, show_in, NULL, 0, 10),
};

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

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

        mutex_lock(&data->update_lock);
        if (data->type == f81866a)
                f71882fg_write8(data, F81866_REG_IN1_HIGH, val);
        else
                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 = kstrtoul(buf, 10, &val);
        if (err)
                return err;

        mutex_lock(&data->update_lock);
        if (data->type == f81866a)
                data->in_beep = f71882fg_read8(data, F81866_REG_IN_BEEP);
        else
                data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP);

        if (val)
                data->in_beep |= 1 << nr;
        else
                data->in_beep &= ~(1 << nr);

        if (data->type == f81866a)
                f71882fg_write8(data, F81866_REG_IN_BEEP, data->in_beep);
        else
                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");
}

/* 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),
};

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

        val = clamp_val(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_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_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 */
                if (fan_from_reg(data->fan_full_speed[nr]))
                        val = 255 * fan_from_reg(data->fan_target[nr])
                                / fan_from_reg(data->fan_full_speed[nr]);
                else
                        val = 0;
        }
        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 = kstrtol(buf, 10, &val);
        if (err)
                return err;

        val = clamp_val(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 = kstrtol(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_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 = kstrtoul(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;
}

/* 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),
} };

static ssize_t show_simple_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;

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

static ssize_t store_simple_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 = kstrtol(buf, 10, &val);
        if (err)
                return err;

        val = clamp_val(val, 0, 255);

        mutex_lock(&data->update_lock);
        f71882fg_write8(data, F71882FG_REG_PWM(nr), val);
        data->pwm[nr] = val;
        mutex_unlock(&data->update_lock);

        return count;
}

/* Attr for the third fan of the f71808a, which only has manual pwm */
static struct sensor_device_attribute_2 f71808a_fan3_attr[] = {
        SENSOR_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 0, 2),
        SENSOR_ATTR_2(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 0, 2),
        SENSOR_ATTR_2(pwm3, S_IRUGO|S_IWUSR,
                      show_simple_pwm, store_simple_pwm, 0, 2),
};

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 = kstrtoul(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;
}

/* 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),
};

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

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

        val /= 1000;

        if (data->auto_point_temp_signed)
                val = clamp_val(val, -128, 127);
        else
                val = clamp_val(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_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 = kstrtol(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 = clamp_val(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;
}

/*
 * PWM attr for the f71862fg, fewer pwms and fewer zones per pwm than the
 * standard models
 */
static struct sensor_device_attribute_2 f71862fg_auto_pwm_attr[3][7] = { {
        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 for the f71808e/f71869, almost identical to the f71862fg, but the
 * pwm setting when the temperature is above the pwmX_auto_point1_temp can be
 * programmed instead of being hardcoded to 0xff
 */
static struct sensor_device_attribute_2 f71869_auto_pwm_attr[3][8] = { {
        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,
                      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,
                      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,
                      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,
                      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,
                      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 for the standard models */
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[3][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(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 int 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 f71882fg_create_fan_sysfs_files(
        struct platform_device *pdev, int idx)
{
        struct f71882fg_data *data = platform_get_drvdata(pdev);
        int err;

        /* Sanity check the pwm setting */
        err = 0;
        switch (data->type) {
        case f71858fg:
                if (((data->pwm_enable >> (idx * 2)) & 3) == 3)
                        err = 1;
                break;
        case f71862fg:
                if (((data->pwm_enable >> (idx * 2)) & 1) != 1)
                        err = 1;
                break;
        case f8000:
                if (idx == 2)
                        err = data->pwm_enable & 0x20;
                break;
        default:
                break;
        }
        if (err) {
                dev_err(&pdev->dev,
                        "Invalid (reserved) pwm settings: 0x%02x, "
                        "skipping fan %d\n",
                        (data->pwm_enable >> (idx * 2)) & 3, idx + 1);
                return 0; /* This is a non fatal condition */
        }

        err = f71882fg_create_sysfs_files(pdev, &fxxxx_fan_attr[idx][0],
                                          ARRAY_SIZE(fxxxx_fan_attr[0]));
        if (err)
                return err;

        if (f71882fg_fan_has_beep[data->type]) {
                err = f71882fg_create_sysfs_files(pdev,
                                                  &fxxxx_fan_beep_attr[idx],
                                                  1);
                if (err)
                        return err;
        }

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

        /* Check for unsupported auto pwm settings */
        switch (data->type) {
        case f71808e:
        case f71808a:
        case f71869:
        case f71869a:
        case f71889fg:
        case f71889ed:
        case f71889a:
                data->pwm_auto_point_mapping[idx] =
                        f71882fg_read8(data, F71882FG_REG_POINT_MAPPING(idx));
                if ((data->pwm_auto_point_mapping[idx] & 0x80) ||
                    (data->pwm_auto_point_mapping[idx] & 3) == 0) {
                        dev_warn(&pdev->dev,
                                 "Auto pwm controlled by raw digital "
                                 "data, disabling pwm auto_point "
                                 "sysfs attributes for fan %d\n", idx + 1);
                        return 0; /* This is a non fatal condition */
                }
                break;
        default:
                break;
        }

        switch (data->type) {
        case f71862fg:
                err = f71882fg_create_sysfs_files(pdev,
                                        &f71862fg_auto_pwm_attr[idx][0],
                                        ARRAY_SIZE(f71862fg_auto_pwm_attr[0]));
                break;
        case f71808e:
        case f71869:
                err = f71882fg_create_sysfs_files(pdev,
                                        &f71869_auto_pwm_attr[idx][0],
                                        ARRAY_SIZE(f71869_auto_pwm_attr[0]));
                break;
        case f8000:
                err = f71882fg_create_sysfs_files(pdev,
                                        &f8000_auto_pwm_attr[idx][0],
                                        ARRAY_SIZE(f8000_auto_pwm_attr[0]));
                break;
        default:
                err = f71882fg_create_sysfs_files(pdev,
                                        &fxxxx_auto_pwm_attr[idx][0],
                                        ARRAY_SIZE(fxxxx_auto_pwm_attr[0]));
        }

        return err;
}

static void f71882fg_remove(struct platform_device *pdev)
{
        struct f71882fg_data *data = platform_get_drvdata(pdev);
        int nr_fans = f71882fg_nr_fans[data->type];
        int nr_temps = f71882fg_nr_temps[data->type];
        int i;
        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;
                case f81866a:
                        f71882fg_remove_sysfs_files(pdev,
                                        f71858fg_temp_attr,
                                        ARRAY_SIZE(f71858fg_temp_attr));
                        break;
                default:
                        f71882fg_remove_sysfs_files(pdev,
                                &fxxxx_temp_attr[0][0],
                                ARRAY_SIZE(fxxxx_temp_attr[0]) * nr_temps);
                }
                if (f71882fg_temp_has_beep[data->type]) {
                        if (data->type == f81866a)
                                f71882fg_remove_sysfs_files(pdev,
                                        &f81866_temp_beep_attr[0][0],
                                        ARRAY_SIZE(f81866_temp_beep_attr[0])
                                                * nr_temps);
                        else
                                f71882fg_remove_sysfs_files(pdev,
                                        &fxxxx_temp_beep_attr[0][0],
                                        ARRAY_SIZE(fxxxx_temp_beep_attr[0])
                                                * nr_temps);
                }

                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 (f71882fg_fan_has_beep[data->type]) {
                        f71882fg_remove_sysfs_files(pdev,
                                        fxxxx_fan_beep_attr, nr_fans);
                }

                switch (data->type) {
                case f71808a:
                        f71882fg_remove_sysfs_files(pdev,
                                &fxxxx_auto_pwm_attr[0][0],
                                ARRAY_SIZE(fxxxx_auto_pwm_attr[0]) * nr_fans);
                        f71882fg_remove_sysfs_files(pdev,
                                        f71808a_fan3_attr,
                                        ARRAY_SIZE(f71808a_fan3_attr));
                        break;
                case f71862fg:
                        f71882fg_remove_sysfs_files(pdev,
                                &f71862fg_auto_pwm_attr[0][0],
                                ARRAY_SIZE(f71862fg_auto_pwm_attr[0]) *
                                        nr_fans);
                        break;
                case f71808e:
                case f71869:
                        f71882fg_remove_sysfs_files(pdev,
                                &f71869_auto_pwm_attr[0][0],
                                ARRAY_SIZE(f71869_auto_pwm_attr[0]) * nr_fans);
                        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[0][0],
                                ARRAY_SIZE(f8000_auto_pwm_attr[0]) * nr_fans);
                        break;
                default:
                        f71882fg_remove_sysfs_files(pdev,
                                &fxxxx_auto_pwm_attr[0][0],
                                ARRAY_SIZE(fxxxx_auto_pwm_attr[0]) * nr_fans);
                }
        }
}

static int f71882fg_probe(struct platform_device *pdev)
{
        struct f71882fg_data *data;
        struct f71882fg_sio_data *sio_data = dev_get_platdata(&pdev->dev);
        int nr_fans = f71882fg_nr_fans[sio_data->type];
        int nr_temps = f71882fg_nr_temps[sio_data->type];
        int err, i;
        int size;
        u8 start_reg, reg;

        data = devm_kzalloc(&pdev->dev, 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 ||
                data->type == f81866a) ? 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");
                return -ENODEV;
        }
        if (!(start_reg & 0x03)) {
                dev_warn(&pdev->dev, "Hardware monitoring not activated\n");
                return -ENODEV;
        }

        /* 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;
                case f81866a:
                        err = f71882fg_create_sysfs_files(pdev,
                                        f71858fg_temp_attr,
                                        ARRAY_SIZE(f71858fg_temp_attr));
                        break;
                default:
                        err = f71882fg_create_sysfs_files(pdev,
                                &fxxxx_temp_attr[0][0],
                                ARRAY_SIZE(fxxxx_temp_attr[0]) * nr_temps);
                }
                if (err)
                        goto exit_unregister_sysfs;

                if (f71882fg_temp_has_beep[data->type]) {
                        if (data->type == f81866a) {
                                size = ARRAY_SIZE(f81866_temp_beep_attr[0]);
                                err = f71882fg_create_sysfs_files(pdev,
                                                &f81866_temp_beep_attr[0][0],
                                                size * nr_temps);

                        } else {
                                size = ARRAY_SIZE(fxxxx_temp_beep_attr[0]);
                                err = f71882fg_create_sysfs_files(pdev,
                                                &fxxxx_temp_beep_attr[0][0],
                                                size * nr_temps);
                        }
                        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 f71808e:
                case f71808a:
                case f71869:
                case f71869a:
                        /* These always have signed auto point temps */
                        data->auto_point_temp_signed = 1;
                        fallthrough;    /* to select correct fan/pwm reg bank! */
                case f71889fg:
                case f71889ed:
                case f71889a:
                        reg = f71882fg_read8(data, F71882FG_REG_FAN_FAULT_T);
                        if (reg & F71882FG_FAN_NEG_TEMP_EN)
                                data->auto_point_temp_signed = 1;
                        /* Ensure banked pwm registers point to right bank */
                        reg &= ~F71882FG_FAN_PROG_SEL;
                        f71882fg_write8(data, F71882FG_REG_FAN_FAULT_T, reg);
                        break;
                default:
                        break;
                }

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

                for (i = 0; i < nr_fans; i++) {
                        err = f71882fg_create_fan_sysfs_files(pdev, i);
                        if (err)
                                goto exit_unregister_sysfs;
                }

                /* Some types have 1 extra fan with limited functionality */
                switch (data->type) {
                case f71808a:
                        err = f71882fg_create_sysfs_files(pdev,
                                        f71808a_fan3_attr,
                                        ARRAY_SIZE(f71808a_fan3_attr));
                        break;
                case f8000:
                        err = f71882fg_create_sysfs_files(pdev,
                                        f8000_fan_attr,
                                        ARRAY_SIZE(f8000_fan_attr));
                        break;
                default:
                        break;
                }
                if (err)
                        goto exit_unregister_sysfs;
        }

        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 */
}

static int __init f71882fg_find(int sioaddr, struct f71882fg_sio_data *sio_data)
{
        u16 devid;
        unsigned short address;
        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_F71808E_ID:
                sio_data->type = f71808e;
                break;
        case SIO_F71808A_ID:
                sio_data->type = f71808a;
                break;
        case SIO_F71858_ID:
        case SIO_F71858AD_ID:
                sio_data->type = f71858fg;
                break;
        case SIO_F71862_ID:
                sio_data->type = f71862fg;
                break;
        case SIO_F71868_ID:
                sio_data->type = f71868a;
                break;
        case SIO_F71869_ID:
                sio_data->type = f71869;
                break;
        case SIO_F71869A_ID:
                sio_data->type = f71869a;
                break;
        case SIO_F71882_ID:
                sio_data->type = f71882fg;
                break;
        case SIO_F71889_ID:
                sio_data->type = f71889fg;
                break;
        case SIO_F71889E_ID:
                sio_data->type = f71889ed;
                break;
        case SIO_F71889A_ID:
                sio_data->type = f71889a;
                break;
        case SIO_F8000_ID:
                sio_data->type = f8000;
                break;
        case SIO_F81768D_ID:
                sio_data->type = f81768d;
                break;
        case SIO_F81865_ID:
                sio_data->type = f81865f;
                break;
        case SIO_F81866_ID:
        case SIO_F81966_ID:
        case SIO_F81968_ID:
                sio_data->type = f81866a;
                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 = address;
        pr_info("Found %s chip at %#x, revision %d, devid: %04x\n",
                f71882fg_names[sio_data->type], (unsigned int)address,
                (int)superio_inb(sioaddr, SIO_REG_DEVREV), devid);
exit:
        superio_exit(sioaddr);
        return err;
}

static int __init f71882fg_device_add(int 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 struct platform_driver f71882fg_driver = {
        .driver = {
                .name   = DRVNAME,
        },
        .probe          = f71882fg_probe,
        .remove         = f71882fg_remove,
};

static int __init f71882fg_init(void)
{
        int err;
        int address;
        struct f71882fg_sio_data sio_data;

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

        address = f71882fg_find(0x2e, &sio_data);
        if (address < 0)
                address = f71882fg_find(0x4e, &sio_data);
        if (address < 0)
                return address;

        err = platform_driver_register(&f71882fg_driver);
        if (err)
                return err;

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

        return 0;

exit_driver:
        platform_driver_unregister(&f71882fg_driver);
        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);