// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * w83627hf.c - Part of lm_sensors, Linux kernel modules for hardware
 *              monitoring
 * Copyright (c) 1998 - 2003  Frodo Looijaard <frodol@dds.nl>,
 *                            Philip Edelbrock <phil@netroedge.com>,
 *                            and Mark Studebaker <mdsxyz123@yahoo.com>
 * Ported to 2.6 by Bernhard C. Schrenk <clemy@clemy.org>
 * Copyright (c) 2007 - 1012  Jean Delvare <jdelvare@suse.de>
 */

/*
 * Supports following chips:
 *
 * Chip         #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
 * w83627hf     9       3       2       3       0x20    0x5ca3  no      yes(LPC)
 * w83627thf    7       3       3       3       0x90    0x5ca3  no      yes(LPC)
 * w83637hf     7       3       3       3       0x80    0x5ca3  no      yes(LPC)
 * w83687thf    7       3       3       3       0x90    0x5ca3  no      yes(LPC)
 * w83697hf     8       2       2       2       0x60    0x5ca3  no      yes(LPC)
 *
 * For other winbond chips, and for i2c support in the above chips,
 * use w83781d.c.
 *
 * Note: automatic ("cruise") fan control for 697, 637 & 627thf not
 * supported yet.
 */

#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/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/ioport.h>
#include <linux/acpi.h>
#include <linux/io.h>
#include "lm75.h"

static struct platform_device *pdev;

#define DRVNAME "w83627hf"
enum chips { w83627hf, w83627thf, w83697hf, w83637hf, w83687thf };

struct w83627hf_sio_data {
        enum chips type;
        int sioaddr;
};

static u8 force_i2c = 0x1f;
module_param(force_i2c, byte, 0);
MODULE_PARM_DESC(force_i2c,
                 "Initialize the i2c address of the sensors");

static bool init = 1;
module_param(init, bool, 0);
MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");

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

/* modified from kernel/include/traps.c */
#define DEV                     0x07 /* Register: Logical device select */

/* logical device numbers for superio_select (below) */
#define W83627HF_LD_FDC         0x00
#define W83627HF_LD_PRT         0x01
#define W83627HF_LD_UART1       0x02
#define W83627HF_LD_UART2       0x03
#define W83627HF_LD_KBC         0x05
#define W83627HF_LD_CIR         0x06 /* w83627hf only */
#define W83627HF_LD_GAME        0x07
#define W83627HF_LD_MIDI        0x07
#define W83627HF_LD_GPIO1       0x07
#define W83627HF_LD_GPIO5       0x07 /* w83627thf only */
#define W83627HF_LD_GPIO2       0x08
#define W83627HF_LD_GPIO3       0x09
#define W83627HF_LD_GPIO4       0x09 /* w83627thf only */
#define W83627HF_LD_ACPI        0x0a
#define W83627HF_LD_HWM         0x0b

#define DEVID                   0x20 /* Register: Device ID */

#define W83627THF_GPIO5_EN      0x30 /* w83627thf only */
#define W83627THF_GPIO5_IOSR    0xf3 /* w83627thf only */
#define W83627THF_GPIO5_DR      0xf4 /* w83627thf only */

#define W83687THF_VID_EN        0x29 /* w83687thf only */
#define W83687THF_VID_CFG       0xF0 /* w83687thf only */
#define W83687THF_VID_DATA      0xF1 /* w83687thf only */

static inline void
superio_outb(struct w83627hf_sio_data *sio, int reg, int val)
{
        outb(reg, sio->sioaddr);
        outb(val, sio->sioaddr + 1);
}

static inline int
superio_inb(struct w83627hf_sio_data *sio, int reg)
{
        outb(reg, sio->sioaddr);
        return inb(sio->sioaddr + 1);
}

static inline void
superio_select(struct w83627hf_sio_data *sio, int ld)
{
        outb(DEV, sio->sioaddr);
        outb(ld,  sio->sioaddr + 1);
}

static inline int
superio_enter(struct w83627hf_sio_data *sio)
{
        if (!request_muxed_region(sio->sioaddr, 2, DRVNAME))
                return -EBUSY;

        outb(0x87, sio->sioaddr);
        outb(0x87, sio->sioaddr);

        return 0;
}

static inline void
superio_exit(struct w83627hf_sio_data *sio)
{
        outb(0xAA, sio->sioaddr);
        release_region(sio->sioaddr, 2);
}

#define W627_DEVID 0x52
#define W627THF_DEVID 0x82
#define W697_DEVID 0x60
#define W637_DEVID 0x70
#define W687THF_DEVID 0x85
#define WINB_ACT_REG 0x30
#define WINB_BASE_REG 0x60
/* Constants specified below */

/* Alignment of the base address */
#define WINB_ALIGNMENT          ~7

/* Offset & size of I/O region we are interested in */
#define WINB_REGION_OFFSET      5
#define WINB_REGION_SIZE        2

/* Where are the sensors address/data registers relative to the region offset */
#define W83781D_ADDR_REG_OFFSET 0
#define W83781D_DATA_REG_OFFSET 1

/* The W83781D registers */
/* The W83782D registers for nr=7,8 are in bank 5 */
#define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
                                           (0x554 + (((nr) - 7) * 2)))
#define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
                                           (0x555 + (((nr) - 7) * 2)))
#define W83781D_REG_IN(nr)     ((nr < 7) ? (0x20 + (nr)) : \
                                           (0x550 + (nr) - 7))

/* nr:0-2 for fans:1-3 */
#define W83627HF_REG_FAN_MIN(nr)        (0x3b + (nr))
#define W83627HF_REG_FAN(nr)            (0x28 + (nr))

#define W83627HF_REG_TEMP2_CONFIG 0x152
#define W83627HF_REG_TEMP3_CONFIG 0x252
/* these are zero-based, unlike config constants above */
static const u16 w83627hf_reg_temp[]            = { 0x27, 0x150, 0x250 };
static const u16 w83627hf_reg_temp_hyst[]       = { 0x3A, 0x153, 0x253 };
static const u16 w83627hf_reg_temp_over[]       = { 0x39, 0x155, 0x255 };

#define W83781D_REG_BANK 0x4E

#define W83781D_REG_CONFIG 0x40
#define W83781D_REG_ALARM1 0x459
#define W83781D_REG_ALARM2 0x45A
#define W83781D_REG_ALARM3 0x45B

#define W83781D_REG_BEEP_CONFIG 0x4D
#define W83781D_REG_BEEP_INTS1 0x56
#define W83781D_REG_BEEP_INTS2 0x57
#define W83781D_REG_BEEP_INTS3 0x453

#define W83781D_REG_VID_FANDIV 0x47

#define W83781D_REG_CHIPID 0x49
#define W83781D_REG_WCHIPID 0x58
#define W83781D_REG_CHIPMAN 0x4F
#define W83781D_REG_PIN 0x4B

#define W83781D_REG_VBAT 0x5D

#define W83627HF_REG_PWM1 0x5A
#define W83627HF_REG_PWM2 0x5B

static const u8 W83627THF_REG_PWM_ENABLE[] = {
        0x04,           /* FAN 1 mode */
        0x04,           /* FAN 2 mode */
        0x12,           /* FAN AUX mode */
};
static const u8 W83627THF_PWM_ENABLE_SHIFT[] = { 2, 4, 1 };

#define W83627THF_REG_PWM1              0x01    /* 697HF/637HF/687THF too */
#define W83627THF_REG_PWM2              0x03    /* 697HF/637HF/687THF too */
#define W83627THF_REG_PWM3              0x11    /* 637HF/687THF too */

#define W83627THF_REG_VRM_OVT_CFG       0x18    /* 637HF/687THF too */

static const u8 regpwm_627hf[] = { W83627HF_REG_PWM1, W83627HF_REG_PWM2 };
static const u8 regpwm[] = { W83627THF_REG_PWM1, W83627THF_REG_PWM2,
                             W83627THF_REG_PWM3 };
#define W836X7HF_REG_PWM(type, nr) (((type) == w83627hf) ? \
                                    regpwm_627hf[nr] : regpwm[nr])

#define W83627HF_REG_PWM_FREQ           0x5C    /* Only for the 627HF */

#define W83637HF_REG_PWM_FREQ1          0x00    /* 697HF/687THF too */
#define W83637HF_REG_PWM_FREQ2          0x02    /* 697HF/687THF too */
#define W83637HF_REG_PWM_FREQ3          0x10    /* 687THF too */

static const u8 W83637HF_REG_PWM_FREQ[] = { W83637HF_REG_PWM_FREQ1,
                                        W83637HF_REG_PWM_FREQ2,
                                        W83637HF_REG_PWM_FREQ3 };

#define W83627HF_BASE_PWM_FREQ  46870

#define W83781D_REG_I2C_ADDR 0x48
#define W83781D_REG_I2C_SUBADDR 0x4A

/* Sensor selection */
#define W83781D_REG_SCFG1 0x5D
static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 };
#define W83781D_REG_SCFG2 0x59
static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 };
#define W83781D_DEFAULT_BETA 3435

/*
 * Conversions. Limit checking is only done on the TO_REG
 * variants. Note that you should be a bit careful with which arguments
 * these macros are called: arguments may be evaluated more than once.
 * Fixing this is just not worth it.
 */
#define IN_TO_REG(val)  (clamp_val((((val) + 8) / 16), 0, 255))
#define IN_FROM_REG(val) ((val) * 16)

static inline u8 FAN_TO_REG(long rpm, int div)
{
        if (rpm == 0)
                return 255;
        rpm = clamp_val(rpm, 1, 1000000);
        return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
}

#define TEMP_MIN (-128000)
#define TEMP_MAX ( 127000)

/*
 * TEMP: 0.001C/bit (-128C to +127C)
 * REG: 1C/bit, two's complement
 */
static u8 TEMP_TO_REG(long temp)
{
        int ntemp = clamp_val(temp, TEMP_MIN, TEMP_MAX);
        ntemp += (ntemp < 0 ? -500 : 500);
        return (u8)(ntemp / 1000);
}

static int TEMP_FROM_REG(u8 reg)
{
        return (s8)reg * 1000;
}

#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))

#define PWM_TO_REG(val) (clamp_val((val), 0, 255))

static inline unsigned long pwm_freq_from_reg_627hf(u8 reg)
{
        unsigned long freq;
        freq = W83627HF_BASE_PWM_FREQ >> reg;
        return freq;
}
static inline u8 pwm_freq_to_reg_627hf(unsigned long val)
{
        u8 i;
        /*
         * Only 5 dividers (1 2 4 8 16)
         * Search for the nearest available frequency
         */
        for (i = 0; i < 4; i++) {
                if (val > (((W83627HF_BASE_PWM_FREQ >> i) +
                            (W83627HF_BASE_PWM_FREQ >> (i+1))) / 2))
                        break;
        }
        return i;
}

static inline unsigned long pwm_freq_from_reg(u8 reg)
{
        /* Clock bit 8 -> 180 kHz or 24 MHz */
        unsigned long clock = (reg & 0x80) ? 180000UL : 24000000UL;

        reg &= 0x7f;
        /* This should not happen but anyway... */
        if (reg == 0)
                reg++;
        return clock / (reg << 8);
}
static inline u8 pwm_freq_to_reg(unsigned long val)
{
        /* Minimum divider value is 0x01 and maximum is 0x7F */
        if (val >= 93750)       /* The highest we can do */
                return 0x01;
        if (val >= 720) /* Use 24 MHz clock */
                return 24000000UL / (val << 8);
        if (val < 6)            /* The lowest we can do */
                return 0xFF;
        else                    /* Use 180 kHz clock */
                return 0x80 | (180000UL / (val << 8));
}

#define BEEP_MASK_FROM_REG(val)         ((val) & 0xff7fff)
#define BEEP_MASK_TO_REG(val)           ((val) & 0xff7fff)

#define DIV_FROM_REG(val) (1 << (val))

static inline u8 DIV_TO_REG(long val)
{
        int i;
        val = clamp_val(val, 1, 128) >> 1;
        for (i = 0; i < 7; i++) {
                if (val == 0)
                        break;
                val >>= 1;
        }
        return (u8)i;
}

/*
 * For each registered chip, we need to keep some data in memory.
 * The structure is dynamically allocated.
 */
struct w83627hf_data {
        unsigned short addr;
        const char *name;
        struct device *hwmon_dev;
        struct mutex lock;
        enum chips type;

        struct mutex update_lock;
        bool valid;             /* true if following fields are valid */
        unsigned long last_updated;     /* In jiffies */

        u8 in[9];               /* Register value */
        u8 in_max[9];           /* Register value */
        u8 in_min[9];           /* Register value */
        u8 fan[3];              /* Register value */
        u8 fan_min[3];          /* Register value */
        u16 temp[3];            /* Register value */
        u16 temp_max[3];        /* Register value */
        u16 temp_max_hyst[3];   /* Register value */
        u8 fan_div[3];          /* Register encoding, shifted right */
        u8 vid;                 /* Register encoding, combined */
        u32 alarms;             /* Register encoding, combined */
        u32 beep_mask;          /* Register encoding, combined */
        u8 pwm[3];              /* Register value */
        u8 pwm_enable[3];       /* 1 = manual
                                 * 2 = thermal cruise (also called SmartFan I)
                                 * 3 = fan speed cruise
                                 */
        u8 pwm_freq[3];         /* Register value */
        u16 sens[3];            /* 1 = pentium diode; 2 = 3904 diode;
                                 * 4 = thermistor
                                 */
        u8 vrm;
        u8 vrm_ovt;             /* Register value, 627THF/637HF/687THF only */

#ifdef CONFIG_PM
        /* Remember extra register values over suspend/resume */
        u8 scfg1;
        u8 scfg2;
#endif
};

/* Registers 0x50-0x5f are banked */
static inline void w83627hf_set_bank(struct w83627hf_data *data, u16 reg)
{
        if ((reg & 0x00f0) == 0x50) {
                outb_p(W83781D_REG_BANK, data->addr + W83781D_ADDR_REG_OFFSET);
                outb_p(reg >> 8, data->addr + W83781D_DATA_REG_OFFSET);
        }
}

/* Not strictly necessary, but play it safe for now */
static inline void w83627hf_reset_bank(struct w83627hf_data *data, u16 reg)
{
        if (reg & 0xff00) {
                outb_p(W83781D_REG_BANK, data->addr + W83781D_ADDR_REG_OFFSET);
                outb_p(0, data->addr + W83781D_DATA_REG_OFFSET);
        }
}

static int w83627hf_read_value(struct w83627hf_data *data, u16 reg)
{
        int res, word_sized;

        mutex_lock(&data->lock);
        word_sized = (((reg & 0xff00) == 0x100)
                   || ((reg & 0xff00) == 0x200))
                  && (((reg & 0x00ff) == 0x50)
                   || ((reg & 0x00ff) == 0x53)
                   || ((reg & 0x00ff) == 0x55));
        w83627hf_set_bank(data, reg);
        outb_p(reg & 0xff, data->addr + W83781D_ADDR_REG_OFFSET);
        res = inb_p(data->addr + W83781D_DATA_REG_OFFSET);
        if (word_sized) {
                outb_p((reg & 0xff) + 1,
                       data->addr + W83781D_ADDR_REG_OFFSET);
                res =
                    (res << 8) + inb_p(data->addr +
                                       W83781D_DATA_REG_OFFSET);
        }
        w83627hf_reset_bank(data, reg);
        mutex_unlock(&data->lock);
        return res;
}

static int w83627hf_write_value(struct w83627hf_data *data, u16 reg, u16 value)
{
        int word_sized;

        mutex_lock(&data->lock);
        word_sized = (((reg & 0xff00) == 0x100)
                   || ((reg & 0xff00) == 0x200))
                  && (((reg & 0x00ff) == 0x53)
                   || ((reg & 0x00ff) == 0x55));
        w83627hf_set_bank(data, reg);
        outb_p(reg & 0xff, data->addr + W83781D_ADDR_REG_OFFSET);
        if (word_sized) {
                outb_p(value >> 8,
                       data->addr + W83781D_DATA_REG_OFFSET);
                outb_p((reg & 0xff) + 1,
                       data->addr + W83781D_ADDR_REG_OFFSET);
        }
        outb_p(value & 0xff,
               data->addr + W83781D_DATA_REG_OFFSET);
        w83627hf_reset_bank(data, reg);
        mutex_unlock(&data->lock);
        return 0;
}

static void w83627hf_update_fan_div(struct w83627hf_data *data)
{
        int reg;

        reg = w83627hf_read_value(data, W83781D_REG_VID_FANDIV);
        data->fan_div[0] = (reg >> 4) & 0x03;
        data->fan_div[1] = (reg >> 6) & 0x03;
        if (data->type != w83697hf) {
                data->fan_div[2] = (w83627hf_read_value(data,
                                       W83781D_REG_PIN) >> 6) & 0x03;
        }
        reg = w83627hf_read_value(data, W83781D_REG_VBAT);
        data->fan_div[0] |= (reg >> 3) & 0x04;
        data->fan_div[1] |= (reg >> 4) & 0x04;
        if (data->type != w83697hf)
                data->fan_div[2] |= (reg >> 5) & 0x04;
}

static struct w83627hf_data *w83627hf_update_device(struct device *dev)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        int i, num_temps = (data->type == w83697hf) ? 2 : 3;
        int num_pwms = (data->type == w83697hf) ? 2 : 3;

        mutex_lock(&data->update_lock);

        if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
            || !data->valid) {
                for (i = 0; i <= 8; i++) {
                        /* skip missing sensors */
                        if (((data->type == w83697hf) && (i == 1)) ||
                            ((data->type != w83627hf && data->type != w83697hf)
                            && (i == 5 || i == 6)))
                                continue;
                        data->in[i] =
                            w83627hf_read_value(data, W83781D_REG_IN(i));
                        data->in_min[i] =
                            w83627hf_read_value(data,
                                               W83781D_REG_IN_MIN(i));
                        data->in_max[i] =
                            w83627hf_read_value(data,
                                               W83781D_REG_IN_MAX(i));
                }
                for (i = 0; i <= 2; i++) {
                        data->fan[i] =
                            w83627hf_read_value(data, W83627HF_REG_FAN(i));
                        data->fan_min[i] =
                            w83627hf_read_value(data,
                                               W83627HF_REG_FAN_MIN(i));
                }
                for (i = 0; i <= 2; i++) {
                        u8 tmp = w83627hf_read_value(data,
                                W836X7HF_REG_PWM(data->type, i));
                        /* bits 0-3 are reserved  in 627THF */
                        if (data->type == w83627thf)
                                tmp &= 0xf0;
                        data->pwm[i] = tmp;
                        if (i == 1 &&
                            (data->type == w83627hf || data->type == w83697hf))
                                break;
                }
                if (data->type == w83627hf) {
                                u8 tmp = w83627hf_read_value(data,
                                                W83627HF_REG_PWM_FREQ);
                                data->pwm_freq[0] = tmp & 0x07;
                                data->pwm_freq[1] = (tmp >> 4) & 0x07;
                } else if (data->type != w83627thf) {
                        for (i = 1; i <= 3; i++) {
                                data->pwm_freq[i - 1] =
                                        w83627hf_read_value(data,
                                                W83637HF_REG_PWM_FREQ[i - 1]);
                                if (i == 2 && (data->type == w83697hf))
                                        break;
                        }
                }
                if (data->type != w83627hf) {
                        for (i = 0; i < num_pwms; i++) {
                                u8 tmp = w83627hf_read_value(data,
                                        W83627THF_REG_PWM_ENABLE[i]);
                                data->pwm_enable[i] =
                                        ((tmp >> W83627THF_PWM_ENABLE_SHIFT[i])
                                        & 0x03) + 1;
                        }
                }
                for (i = 0; i < num_temps; i++) {
                        data->temp[i] = w83627hf_read_value(
                                                data, w83627hf_reg_temp[i]);
                        data->temp_max[i] = w83627hf_read_value(
                                                data, w83627hf_reg_temp_over[i]);
                        data->temp_max_hyst[i] = w83627hf_read_value(
                                                data, w83627hf_reg_temp_hyst[i]);
                }

                w83627hf_update_fan_div(data);

                data->alarms =
                    w83627hf_read_value(data, W83781D_REG_ALARM1) |
                    (w83627hf_read_value(data, W83781D_REG_ALARM2) << 8) |
                    (w83627hf_read_value(data, W83781D_REG_ALARM3) << 16);
                i = w83627hf_read_value(data, W83781D_REG_BEEP_INTS2);
                data->beep_mask = (i << 8) |
                    w83627hf_read_value(data, W83781D_REG_BEEP_INTS1) |
                    w83627hf_read_value(data, W83781D_REG_BEEP_INTS3) << 16;
                data->last_updated = jiffies;
                data->valid = true;
        }

        mutex_unlock(&data->update_lock);

        return data;
}

#ifdef CONFIG_PM
static int w83627hf_suspend(struct device *dev)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);

        mutex_lock(&data->update_lock);
        data->scfg1 = w83627hf_read_value(data, W83781D_REG_SCFG1);
        data->scfg2 = w83627hf_read_value(data, W83781D_REG_SCFG2);
        mutex_unlock(&data->update_lock);

        return 0;
}

static int w83627hf_resume(struct device *dev)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        int i, num_temps = (data->type == w83697hf) ? 2 : 3;

        /* Restore limits */
        mutex_lock(&data->update_lock);
        for (i = 0; i <= 8; i++) {
                /* skip missing sensors */
                if (((data->type == w83697hf) && (i == 1)) ||
                    ((data->type != w83627hf && data->type != w83697hf)
                    && (i == 5 || i == 6)))
                        continue;
                w83627hf_write_value(data, W83781D_REG_IN_MAX(i),
                                     data->in_max[i]);
                w83627hf_write_value(data, W83781D_REG_IN_MIN(i),
                                     data->in_min[i]);
        }
        for (i = 0; i <= 2; i++)
                w83627hf_write_value(data, W83627HF_REG_FAN_MIN(i),
                                     data->fan_min[i]);
        for (i = 0; i < num_temps; i++) {
                w83627hf_write_value(data, w83627hf_reg_temp_over[i],
                                     data->temp_max[i]);
                w83627hf_write_value(data, w83627hf_reg_temp_hyst[i],
                                     data->temp_max_hyst[i]);
        }

        /* Fixup BIOS bugs */
        if (data->type == w83627thf || data->type == w83637hf ||
            data->type == w83687thf)
                w83627hf_write_value(data, W83627THF_REG_VRM_OVT_CFG,
                                     data->vrm_ovt);
        w83627hf_write_value(data, W83781D_REG_SCFG1, data->scfg1);
        w83627hf_write_value(data, W83781D_REG_SCFG2, data->scfg2);

        /* Force re-reading all values */
        data->valid = false;
        mutex_unlock(&data->update_lock);

        return 0;
}

static const struct dev_pm_ops w83627hf_dev_pm_ops = {
        .suspend = w83627hf_suspend,
        .resume = w83627hf_resume,
};

#define W83627HF_DEV_PM_OPS     (&w83627hf_dev_pm_ops)
#else
#define W83627HF_DEV_PM_OPS     NULL
#endif /* CONFIG_PM */

static int w83627thf_read_gpio5(struct platform_device *pdev)
{
        struct w83627hf_sio_data *sio_data = dev_get_platdata(&pdev->dev);
        int res = 0xff, sel;

        if (superio_enter(sio_data)) {
                /*
                 * Some other driver reserved the address space for itself.
                 * We don't want to fail driver instantiation because of that,
                 * so display a warning and keep going.
                 */
                dev_warn(&pdev->dev,
                         "Can not read VID data: Failed to enable SuperIO access\n");
                return res;
        }

        superio_select(sio_data, W83627HF_LD_GPIO5);

        res = 0xff;

        /* Make sure these GPIO pins are enabled */
        if (!(superio_inb(sio_data, W83627THF_GPIO5_EN) & (1<<3))) {
                dev_dbg(&pdev->dev, "GPIO5 disabled, no VID function\n");
                goto exit;
        }

        /*
         * Make sure the pins are configured for input
         * There must be at least five (VRM 9), and possibly 6 (VRM 10)
         */
        sel = superio_inb(sio_data, W83627THF_GPIO5_IOSR) & 0x3f;
        if ((sel & 0x1f) != 0x1f) {
                dev_dbg(&pdev->dev, "GPIO5 not configured for VID "
                        "function\n");
                goto exit;
        }

        dev_info(&pdev->dev, "Reading VID from GPIO5\n");
        res = superio_inb(sio_data, W83627THF_GPIO5_DR) & sel;

exit:
        superio_exit(sio_data);
        return res;
}

static int w83687thf_read_vid(struct platform_device *pdev)
{
        struct w83627hf_sio_data *sio_data = dev_get_platdata(&pdev->dev);
        int res = 0xff;

        if (superio_enter(sio_data)) {
                /*
                 * Some other driver reserved the address space for itself.
                 * We don't want to fail driver instantiation because of that,
                 * so display a warning and keep going.
                 */
                dev_warn(&pdev->dev,
                         "Can not read VID data: Failed to enable SuperIO access\n");
                return res;
        }

        superio_select(sio_data, W83627HF_LD_HWM);

        /* Make sure these GPIO pins are enabled */
        if (!(superio_inb(sio_data, W83687THF_VID_EN) & (1 << 2))) {
                dev_dbg(&pdev->dev, "VID disabled, no VID function\n");
                goto exit;
        }

        /* Make sure the pins are configured for input */
        if (!(superio_inb(sio_data, W83687THF_VID_CFG) & (1 << 4))) {
                dev_dbg(&pdev->dev, "VID configured as output, "
                        "no VID function\n");
                goto exit;
        }

        res = superio_inb(sio_data, W83687THF_VID_DATA) & 0x3f;

exit:
        superio_exit(sio_data);
        return res;
}

static void w83627hf_init_device(struct platform_device *pdev)
{
        struct w83627hf_data *data = platform_get_drvdata(pdev);
        int i;
        enum chips type = data->type;
        u8 tmp;

        /* Minimize conflicts with other winbond i2c-only clients...  */
        /* disable i2c subclients... how to disable main i2c client?? */
        /* force i2c address to relatively uncommon address */
        if (type == w83627hf) {
                w83627hf_write_value(data, W83781D_REG_I2C_SUBADDR, 0x89);
                w83627hf_write_value(data, W83781D_REG_I2C_ADDR, force_i2c);
        }

        /* Read VID only once */
        if (type == w83627hf || type == w83637hf) {
                int lo = w83627hf_read_value(data, W83781D_REG_VID_FANDIV);
                int hi = w83627hf_read_value(data, W83781D_REG_CHIPID);
                data->vid = (lo & 0x0f) | ((hi & 0x01) << 4);
        } else if (type == w83627thf) {
                data->vid = w83627thf_read_gpio5(pdev);
        } else if (type == w83687thf) {
                data->vid = w83687thf_read_vid(pdev);
        }

        /* Read VRM & OVT Config only once */
        if (type == w83627thf || type == w83637hf || type == w83687thf) {
                data->vrm_ovt =
                        w83627hf_read_value(data, W83627THF_REG_VRM_OVT_CFG);
        }

        tmp = w83627hf_read_value(data, W83781D_REG_SCFG1);
        for (i = 1; i <= 3; i++) {
                if (!(tmp & BIT_SCFG1[i - 1])) {
                        data->sens[i - 1] = 4;
                } else {
                        if (w83627hf_read_value
                            (data,
                             W83781D_REG_SCFG2) & BIT_SCFG2[i - 1])
                                data->sens[i - 1] = 1;
                        else
                                data->sens[i - 1] = 2;
                }
                if ((type == w83697hf) && (i == 2))
                        break;
        }

        if(init) {
                /* Enable temp2 */
                tmp = w83627hf_read_value(data, W83627HF_REG_TEMP2_CONFIG);
                if (tmp & 0x01) {
                        dev_warn(&pdev->dev, "Enabling temp2, readings "
                                 "might not make sense\n");
                        w83627hf_write_value(data, W83627HF_REG_TEMP2_CONFIG,
                                tmp & 0xfe);
                }

                /* Enable temp3 */
                if (type != w83697hf) {
                        tmp = w83627hf_read_value(data,
                                W83627HF_REG_TEMP3_CONFIG);
                        if (tmp & 0x01) {
                                dev_warn(&pdev->dev, "Enabling temp3, "
                                         "readings might not make sense\n");
                                w83627hf_write_value(data,
                                        W83627HF_REG_TEMP3_CONFIG, tmp & 0xfe);
                        }
                }
        }

        /* Start monitoring */
        w83627hf_write_value(data, W83781D_REG_CONFIG,
                            (w83627hf_read_value(data,
                                                W83781D_REG_CONFIG) & 0xf7)
                            | 0x01);

        /* Enable VBAT monitoring if needed */
        tmp = w83627hf_read_value(data, W83781D_REG_VBAT);
        if (!(tmp & 0x01))
                w83627hf_write_value(data, W83781D_REG_VBAT, tmp | 0x01);
}

/* use a different set of functions for in0 */
static ssize_t show_in_0(struct w83627hf_data *data, char *buf, u8 reg)
{
        long in0;

        if ((data->vrm_ovt & 0x01) &&
                (w83627thf == data->type || w83637hf == data->type
                 || w83687thf == data->type))

                /* use VRM9 calculation */
                in0 = (long)((reg * 488 + 70000 + 50) / 100);
        else
                /* use VRM8 (standard) calculation */
                in0 = (long)IN_FROM_REG(reg);

        return sprintf(buf,"%ld\n", in0);
}

static ssize_t in0_input_show(struct device *dev,
                              struct device_attribute *attr, char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return show_in_0(data, buf, data->in[0]);
}
static DEVICE_ATTR_RO(in0_input);

static ssize_t in0_min_show(struct device *dev, struct device_attribute *attr,
                            char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return show_in_0(data, buf, data->in_min[0]);
}

static ssize_t in0_min_store(struct device *dev,
                             struct device_attribute *attr, const char *buf,
                             size_t count)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long val;
        int err;

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

        mutex_lock(&data->update_lock);
        
        if ((data->vrm_ovt & 0x01) &&
                (w83627thf == data->type || w83637hf == data->type
                 || w83687thf == data->type))

                /* use VRM9 calculation */
                data->in_min[0] =
                        clamp_val(((val * 100) - 70000 + 244) / 488, 0, 255);
        else
                /* use VRM8 (standard) calculation */
                data->in_min[0] = IN_TO_REG(val);

        w83627hf_write_value(data, W83781D_REG_IN_MIN(0), data->in_min[0]);
        mutex_unlock(&data->update_lock);
        return count;
}

static DEVICE_ATTR_RW(in0_min);

static ssize_t in0_max_show(struct device *dev, struct device_attribute *attr,
                            char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return show_in_0(data, buf, data->in_max[0]);
}

static ssize_t in0_max_store(struct device *dev,
                             struct device_attribute *attr, const char *buf,
                             size_t count)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long val;
        int err;

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

        mutex_lock(&data->update_lock);

        if ((data->vrm_ovt & 0x01) &&
                (w83627thf == data->type || w83637hf == data->type
                 || w83687thf == data->type))
                
                /* use VRM9 calculation */
                data->in_max[0] =
                        clamp_val(((val * 100) - 70000 + 244) / 488, 0, 255);
        else
                /* use VRM8 (standard) calculation */
                data->in_max[0] = IN_TO_REG(val);

        w83627hf_write_value(data, W83781D_REG_IN_MAX(0), data->in_max[0]);
        mutex_unlock(&data->update_lock);
        return count;
}

static DEVICE_ATTR_RW(in0_max);

static ssize_t
alarm_show(struct device *dev, struct device_attribute *attr, char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        int bitnr = to_sensor_dev_attr(attr)->index;
        return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
}

static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8);
static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 9);
static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 10);
static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 16);
static SENSOR_DEVICE_ATTR_RO(in8_alarm, alarm, 17);
static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6);
static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7);
static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, 11);
static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4);
static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 5);
static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 13);

static ssize_t
beep_show(struct device *dev, struct device_attribute *attr, char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        int bitnr = to_sensor_dev_attr(attr)->index;
        return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1);
}

static ssize_t
beep_store(struct device *dev, struct device_attribute *attr, const char *buf,
           size_t count)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        int bitnr = to_sensor_dev_attr(attr)->index;
        u8 reg;
        unsigned long bit;
        int err;

        err = kstrtoul(buf, 10, &bit);
        if (err)
                return err;

        if (bit & ~1)
                return -EINVAL;

        mutex_lock(&data->update_lock);
        if (bit)
                data->beep_mask |= (1 << bitnr);
        else
                data->beep_mask &= ~(1 << bitnr);

        if (bitnr < 8) {
                reg = w83627hf_read_value(data, W83781D_REG_BEEP_INTS1);
                if (bit)
                        reg |= (1 << bitnr);
                else
                        reg &= ~(1 << bitnr);
                w83627hf_write_value(data, W83781D_REG_BEEP_INTS1, reg);
        } else if (bitnr < 16) {
                reg = w83627hf_read_value(data, W83781D_REG_BEEP_INTS2);
                if (bit)
                        reg |= (1 << (bitnr - 8));
                else
                        reg &= ~(1 << (bitnr - 8));
                w83627hf_write_value(data, W83781D_REG_BEEP_INTS2, reg);
        } else {
                reg = w83627hf_read_value(data, W83781D_REG_BEEP_INTS3);
                if (bit)
                        reg |= (1 << (bitnr - 16));
                else
                        reg &= ~(1 << (bitnr - 16));
                w83627hf_write_value(data, W83781D_REG_BEEP_INTS3, reg);
        }
        mutex_unlock(&data->update_lock);

        return count;
}

static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0);
static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1);
static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2);
static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3);
static SENSOR_DEVICE_ATTR_RW(in4_beep, beep, 8);
static SENSOR_DEVICE_ATTR_RW(in5_beep, beep, 9);
static SENSOR_DEVICE_ATTR_RW(in6_beep, beep, 10);
static SENSOR_DEVICE_ATTR_RW(in7_beep, beep, 16);
static SENSOR_DEVICE_ATTR_RW(in8_beep, beep, 17);
static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 6);
static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 7);
static SENSOR_DEVICE_ATTR_RW(fan3_beep, beep, 11);
static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4);
static SENSOR_DEVICE_ATTR_RW(temp2_beep, beep, 5);
static SENSOR_DEVICE_ATTR_RW(temp3_beep, beep, 13);
static SENSOR_DEVICE_ATTR_RW(beep_enable, beep, 15);

static ssize_t
in_input_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", (long)IN_FROM_REG(data->in[nr]));
}

static ssize_t
in_min_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", (long)IN_FROM_REG(data->in_min[nr]));
}

static ssize_t
in_min_store(struct device *dev, struct device_attribute *devattr,
             const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        long val;
        int err;

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

        mutex_lock(&data->update_lock);
        data->in_min[nr] = IN_TO_REG(val);
        w83627hf_write_value(data, W83781D_REG_IN_MIN(nr), data->in_min[nr]);
        mutex_unlock(&data->update_lock);
        return count;
}

static ssize_t
in_max_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", (long)IN_FROM_REG(data->in_max[nr]));
}

static ssize_t
in_max_store(struct device *dev, struct device_attribute *devattr,
             const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        long val;
        int err;

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

        mutex_lock(&data->update_lock);
        data->in_max[nr] = IN_TO_REG(val);
        w83627hf_write_value(data, W83781D_REG_IN_MAX(nr), data->in_max[nr]);
        mutex_unlock(&data->update_lock);
        return count;
}

static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1);
static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2);
static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3);
static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4);
static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
static SENSOR_DEVICE_ATTR_RO(in5_input, in_input, 5);
static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5);
static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5);
static SENSOR_DEVICE_ATTR_RO(in6_input, in_input, 6);
static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6);
static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6);
static SENSOR_DEVICE_ATTR_RO(in7_input, in_input, 7);
static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7);
static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7);
static SENSOR_DEVICE_ATTR_RO(in8_input, in_input, 8);
static SENSOR_DEVICE_ATTR_RW(in8_min, in_min, 8);
static SENSOR_DEVICE_ATTR_RW(in8_max, in_max, 8);

static ssize_t
fan_input_show(struct device *dev, struct device_attribute *devattr,
               char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", FAN_FROM_REG(data->fan[nr],
                                (long)DIV_FROM_REG(data->fan_div[nr])));
}

static ssize_t
fan_min_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", FAN_FROM_REG(data->fan_min[nr],
                                (long)DIV_FROM_REG(data->fan_div[nr])));
}

static ssize_t
fan_min_store(struct device *dev, struct device_attribute *devattr,
              const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long val;
        int err;

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

        mutex_lock(&data->update_lock);
        data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
        w83627hf_write_value(data, W83627HF_REG_FAN_MIN(nr),
                             data->fan_min[nr]);

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

static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0);
static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1);
static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
static SENSOR_DEVICE_ATTR_RO(fan3_input, fan_input, 2);
static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2);

static ssize_t
fan_div_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n",
                       (long) DIV_FROM_REG(data->fan_div[nr]));
}

/*
 * Note: we save and restore the fan minimum here, because its value is
 * determined in part by the fan divisor.  This follows the principle of
 * least surprise; the user doesn't expect the fan minimum to change just
 * because the divisor changed.
 */
static ssize_t
fan_div_store(struct device *dev, struct device_attribute *devattr,
              const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long min;
        u8 reg;
        unsigned long val;
        int err;

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

        mutex_lock(&data->update_lock);

        /* Save fan_min */
        min = FAN_FROM_REG(data->fan_min[nr],
                           DIV_FROM_REG(data->fan_div[nr]));

        data->fan_div[nr] = DIV_TO_REG(val);

        reg = (w83627hf_read_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV)
               & (nr==0 ? 0xcf : 0x3f))
            | ((data->fan_div[nr] & 0x03) << (nr==0 ? 4 : 6));
        w83627hf_write_value(data, nr==2 ? W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg);

        reg = (w83627hf_read_value(data, W83781D_REG_VBAT)
               & ~(1 << (5 + nr)))
            | ((data->fan_div[nr] & 0x04) << (3 + nr));
        w83627hf_write_value(data, W83781D_REG_VBAT, reg);

        /* Restore fan_min */
        data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
        w83627hf_write_value(data, W83627HF_REG_FAN_MIN(nr), data->fan_min[nr]);

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

static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
static SENSOR_DEVICE_ATTR_RW(fan3_div, fan_div, 2);

static ssize_t
temp_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);

        u16 tmp = data->temp[nr];
        return sprintf(buf, "%ld\n", (nr) ? (long) LM75_TEMP_FROM_REG(tmp)
                                          : (long) TEMP_FROM_REG(tmp));
}

static ssize_t
temp_max_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);

        u16 tmp = data->temp_max[nr];
        return sprintf(buf, "%ld\n", (nr) ? (long) LM75_TEMP_FROM_REG(tmp)
                                          : (long) TEMP_FROM_REG(tmp));
}

static ssize_t
temp_max_store(struct device *dev, struct device_attribute *devattr,
               const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        u16 tmp;
        long val;
        int err;

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

        tmp = (nr) ? LM75_TEMP_TO_REG(val) : TEMP_TO_REG(val);
        mutex_lock(&data->update_lock);
        data->temp_max[nr] = tmp;
        w83627hf_write_value(data, w83627hf_reg_temp_over[nr], tmp);
        mutex_unlock(&data->update_lock);
        return count;
}

static ssize_t
temp_max_hyst_show(struct device *dev, struct device_attribute *devattr,
                   char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);

        u16 tmp = data->temp_max_hyst[nr];
        return sprintf(buf, "%ld\n", (nr) ? (long) LM75_TEMP_FROM_REG(tmp)
                                          : (long) TEMP_FROM_REG(tmp));
}

static ssize_t
temp_max_hyst_store(struct device *dev, struct device_attribute *devattr,
                    const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        u16 tmp;
        long val;
        int err;

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

        tmp = (nr) ? LM75_TEMP_TO_REG(val) : TEMP_TO_REG(val);
        mutex_lock(&data->update_lock);
        data->temp_max_hyst[nr] = tmp;
        w83627hf_write_value(data, w83627hf_reg_temp_hyst[nr], tmp);
        mutex_unlock(&data->update_lock);
        return count;
}

static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp_max_hyst, 0);
static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_max_hyst, 1);
static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
static SENSOR_DEVICE_ATTR_RW(temp3_max_hyst, temp_max_hyst, 2);

static ssize_t
temp_type_show(struct device *dev, struct device_attribute *devattr,
               char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", (long) data->sens[nr]);
}

static ssize_t
temp_type_store(struct device *dev, struct device_attribute *devattr,
                const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long val;
        u32 tmp;
        int err;

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

        mutex_lock(&data->update_lock);

        switch (val) {
        case 1:         /* PII/Celeron diode */
                tmp = w83627hf_read_value(data, W83781D_REG_SCFG1);
                w83627hf_write_value(data, W83781D_REG_SCFG1,
                                    tmp | BIT_SCFG1[nr]);
                tmp = w83627hf_read_value(data, W83781D_REG_SCFG2);
                w83627hf_write_value(data, W83781D_REG_SCFG2,
                                    tmp | BIT_SCFG2[nr]);
                data->sens[nr] = val;
                break;
        case 2:         /* 3904 */
                tmp = w83627hf_read_value(data, W83781D_REG_SCFG1);
                w83627hf_write_value(data, W83781D_REG_SCFG1,
                                    tmp | BIT_SCFG1[nr]);
                tmp = w83627hf_read_value(data, W83781D_REG_SCFG2);
                w83627hf_write_value(data, W83781D_REG_SCFG2,
                                    tmp & ~BIT_SCFG2[nr]);
                data->sens[nr] = val;
                break;
        case W83781D_DEFAULT_BETA:
                dev_warn(dev, "Sensor type %d is deprecated, please use 4 "
                         "instead\n", W83781D_DEFAULT_BETA);
                fallthrough;
        case 4:         /* thermistor */
                tmp = w83627hf_read_value(data, W83781D_REG_SCFG1);
                w83627hf_write_value(data, W83781D_REG_SCFG1,
                                    tmp & ~BIT_SCFG1[nr]);
                data->sens[nr] = val;
                break;
        default:
                dev_err(dev,
                       "Invalid sensor type %ld; must be 1, 2, or 4\n",
                       (long) val);
                break;
        }

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

static SENSOR_DEVICE_ATTR_RW(temp1_type, temp_type, 0);
static SENSOR_DEVICE_ATTR_RW(temp2_type, temp_type, 1);
static SENSOR_DEVICE_ATTR_RW(temp3_type, temp_type, 2);

static ssize_t
alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", (long) data->alarms);
}
static DEVICE_ATTR_RO(alarms);

#define VIN_UNIT_ATTRS(_X_)     \
        &sensor_dev_attr_in##_X_##_input.dev_attr.attr,         \
        &sensor_dev_attr_in##_X_##_min.dev_attr.attr,           \
        &sensor_dev_attr_in##_X_##_max.dev_attr.attr,           \
        &sensor_dev_attr_in##_X_##_alarm.dev_attr.attr,         \
        &sensor_dev_attr_in##_X_##_beep.dev_attr.attr

#define FAN_UNIT_ATTRS(_X_)     \
        &sensor_dev_attr_fan##_X_##_input.dev_attr.attr,        \
        &sensor_dev_attr_fan##_X_##_min.dev_attr.attr,          \
        &sensor_dev_attr_fan##_X_##_div.dev_attr.attr,          \
        &sensor_dev_attr_fan##_X_##_alarm.dev_attr.attr,        \
        &sensor_dev_attr_fan##_X_##_beep.dev_attr.attr

#define TEMP_UNIT_ATTRS(_X_)    \
        &sensor_dev_attr_temp##_X_##_input.dev_attr.attr,       \
        &sensor_dev_attr_temp##_X_##_max.dev_attr.attr,         \
        &sensor_dev_attr_temp##_X_##_max_hyst.dev_attr.attr,    \
        &sensor_dev_attr_temp##_X_##_type.dev_attr.attr,        \
        &sensor_dev_attr_temp##_X_##_alarm.dev_attr.attr,       \
        &sensor_dev_attr_temp##_X_##_beep.dev_attr.attr

static ssize_t
beep_mask_show(struct device *dev, struct device_attribute *attr, char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n",
                      (long)BEEP_MASK_FROM_REG(data->beep_mask));
}

static ssize_t
beep_mask_store(struct device *dev, struct device_attribute *attr,
                const char *buf, size_t count)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long val;
        int err;

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

        mutex_lock(&data->update_lock);

        /* preserve beep enable */
        data->beep_mask = (data->beep_mask & 0x8000)
                        | BEEP_MASK_TO_REG(val);
        w83627hf_write_value(data, W83781D_REG_BEEP_INTS1,
                            data->beep_mask & 0xff);
        w83627hf_write_value(data, W83781D_REG_BEEP_INTS3,
                            ((data->beep_mask) >> 16) & 0xff);
        w83627hf_write_value(data, W83781D_REG_BEEP_INTS2,
                            (data->beep_mask >> 8) & 0xff);

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

static DEVICE_ATTR_RW(beep_mask);

static ssize_t
pwm_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", (long) data->pwm[nr]);
}

static ssize_t
pwm_store(struct device *dev, struct device_attribute *devattr,
          const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long val;
        int err;

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

        mutex_lock(&data->update_lock);

        if (data->type == w83627thf) {
                /* bits 0-3 are reserved  in 627THF */
                data->pwm[nr] = PWM_TO_REG(val) & 0xf0;
                w83627hf_write_value(data,
                                     W836X7HF_REG_PWM(data->type, nr),
                                     data->pwm[nr] |
                                     (w83627hf_read_value(data,
                                     W836X7HF_REG_PWM(data->type, nr)) & 0x0f));
        } else {
                data->pwm[nr] = PWM_TO_REG(val);
                w83627hf_write_value(data,
                                     W836X7HF_REG_PWM(data->type, nr),
                                     data->pwm[nr]);
        }

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

static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2);

static ssize_t
name_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);

        return sprintf(buf, "%s\n", data->name);
}

static DEVICE_ATTR_RO(name);

static struct attribute *w83627hf_attributes[] = {
        &dev_attr_in0_input.attr,
        &dev_attr_in0_min.attr,
        &dev_attr_in0_max.attr,
        &sensor_dev_attr_in0_alarm.dev_attr.attr,
        &sensor_dev_attr_in0_beep.dev_attr.attr,
        VIN_UNIT_ATTRS(2),
        VIN_UNIT_ATTRS(3),
        VIN_UNIT_ATTRS(4),
        VIN_UNIT_ATTRS(7),
        VIN_UNIT_ATTRS(8),

        FAN_UNIT_ATTRS(1),
        FAN_UNIT_ATTRS(2),

        TEMP_UNIT_ATTRS(1),
        TEMP_UNIT_ATTRS(2),

        &dev_attr_alarms.attr,
        &sensor_dev_attr_beep_enable.dev_attr.attr,
        &dev_attr_beep_mask.attr,

        &sensor_dev_attr_pwm1.dev_attr.attr,
        &sensor_dev_attr_pwm2.dev_attr.attr,
        &dev_attr_name.attr,
        NULL
};

static const struct attribute_group w83627hf_group = {
        .attrs = w83627hf_attributes,
};

static ssize_t
pwm_freq_show(struct device *dev, struct device_attribute *devattr, char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        if (data->type == w83627hf)
                return sprintf(buf, "%ld\n",
                        pwm_freq_from_reg_627hf(data->pwm_freq[nr]));
        else
                return sprintf(buf, "%ld\n",
                        pwm_freq_from_reg(data->pwm_freq[nr]));
}

static ssize_t
pwm_freq_store(struct device *dev, struct device_attribute *devattr,
               const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        static const u8 mask[]={0xF8, 0x8F};
        unsigned long val;
        int err;

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

        mutex_lock(&data->update_lock);

        if (data->type == w83627hf) {
                data->pwm_freq[nr] = pwm_freq_to_reg_627hf(val);
                w83627hf_write_value(data, W83627HF_REG_PWM_FREQ,
                                (data->pwm_freq[nr] << (nr*4)) |
                                (w83627hf_read_value(data,
                                W83627HF_REG_PWM_FREQ) & mask[nr]));
        } else {
                data->pwm_freq[nr] = pwm_freq_to_reg(val);
                w83627hf_write_value(data, W83637HF_REG_PWM_FREQ[nr],
                                data->pwm_freq[nr]);
        }

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

static SENSOR_DEVICE_ATTR_RW(pwm1_freq, pwm_freq, 0);
static SENSOR_DEVICE_ATTR_RW(pwm2_freq, pwm_freq, 1);
static SENSOR_DEVICE_ATTR_RW(pwm3_freq, pwm_freq, 2);

static ssize_t
cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
}

static DEVICE_ATTR_RO(cpu0_vid);

static ssize_t
vrm_show(struct device *dev, struct device_attribute *attr, char *buf)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        return sprintf(buf, "%ld\n", (long) data->vrm);
}

static ssize_t
vrm_store(struct device *dev, struct device_attribute *attr, const char *buf,
          size_t count)
{
        struct w83627hf_data *data = dev_get_drvdata(dev);
        unsigned long val;
        int err;

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

        if (val > 255)
                return -EINVAL;
        data->vrm = val;

        return count;
}

static DEVICE_ATTR_RW(vrm);

static ssize_t
pwm_enable_show(struct device *dev, struct device_attribute *devattr,
                char *buf)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = w83627hf_update_device(dev);
        return sprintf(buf, "%d\n", data->pwm_enable[nr]);
}

static ssize_t
pwm_enable_store(struct device *dev, struct device_attribute *devattr,
                 const char *buf, size_t count)
{
        int nr = to_sensor_dev_attr(devattr)->index;
        struct w83627hf_data *data = dev_get_drvdata(dev);
        u8 reg;
        unsigned long val;
        int err;

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

        if (!val || val > 3)    /* modes 1, 2 and 3 are supported */
                return -EINVAL;
        mutex_lock(&data->update_lock);
        data->pwm_enable[nr] = val;
        reg = w83627hf_read_value(data, W83627THF_REG_PWM_ENABLE[nr]);
        reg &= ~(0x03 << W83627THF_PWM_ENABLE_SHIFT[nr]);
        reg |= (val - 1) << W83627THF_PWM_ENABLE_SHIFT[nr];
        w83627hf_write_value(data, W83627THF_REG_PWM_ENABLE[nr], reg);
        mutex_unlock(&data->update_lock);
        return count;
}

static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0);
static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1);
static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2);

static struct attribute *w83627hf_attributes_opt[] = {
        VIN_UNIT_ATTRS(1),
        VIN_UNIT_ATTRS(5),
        VIN_UNIT_ATTRS(6),

        FAN_UNIT_ATTRS(3),
        TEMP_UNIT_ATTRS(3),
        &sensor_dev_attr_pwm3.dev_attr.attr,

        &sensor_dev_attr_pwm1_freq.dev_attr.attr,
        &sensor_dev_attr_pwm2_freq.dev_attr.attr,
        &sensor_dev_attr_pwm3_freq.dev_attr.attr,

        &sensor_dev_attr_pwm1_enable.dev_attr.attr,
        &sensor_dev_attr_pwm2_enable.dev_attr.attr,
        &sensor_dev_attr_pwm3_enable.dev_attr.attr,

        NULL
};

static const struct attribute_group w83627hf_group_opt = {
        .attrs = w83627hf_attributes_opt,
};

static int w83627hf_probe(struct platform_device *pdev)
{
        struct device *dev = &pdev->dev;
        struct w83627hf_sio_data *sio_data = dev_get_platdata(dev);
        struct w83627hf_data *data;
        struct resource *res;
        int err, i;

        static const char *names[] = {
                "w83627hf",
                "w83627thf",
                "w83697hf",
                "w83637hf",
                "w83687thf",
        };

        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
        if (!devm_request_region(dev, res->start, WINB_REGION_SIZE, DRVNAME)) {
                dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
                        (unsigned long)res->start,
                        (unsigned long)(res->start + WINB_REGION_SIZE - 1));
                return -EBUSY;
        }

        data = devm_kzalloc(dev, sizeof(struct w83627hf_data), GFP_KERNEL);
        if (!data)
                return -ENOMEM;

        data->addr = res->start;
        data->type = sio_data->type;
        data->name = names[sio_data->type];
        mutex_init(&data->lock);
        mutex_init(&data->update_lock);
        platform_set_drvdata(pdev, data);

        /* Initialize the chip */
        w83627hf_init_device(pdev);

        /* A few vars need to be filled upon startup */
        for (i = 0; i <= 2; i++)
                data->fan_min[i] = w83627hf_read_value(
                                        data, W83627HF_REG_FAN_MIN(i));
        w83627hf_update_fan_div(data);

        /* Register common device attributes */
        err = sysfs_create_group(&dev->kobj, &w83627hf_group);
        if (err)
                return err;

        /* Register chip-specific device attributes */
        if (data->type == w83627hf || data->type == w83697hf)
                if ((err = device_create_file(dev,
                                &sensor_dev_attr_in5_input.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in5_min.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in5_max.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in5_alarm.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in5_beep.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in6_input.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in6_min.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in6_max.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in6_alarm.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in6_beep.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_pwm1_freq.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_pwm2_freq.dev_attr)))
                        goto error;

        if (data->type != w83697hf)
                if ((err = device_create_file(dev,
                                &sensor_dev_attr_in1_input.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in1_min.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in1_max.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in1_alarm.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_in1_beep.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_fan3_input.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_fan3_min.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_fan3_div.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_fan3_alarm.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_fan3_beep.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_temp3_input.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_temp3_max.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_temp3_max_hyst.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_temp3_alarm.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_temp3_beep.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_temp3_type.dev_attr)))
                        goto error;

        if (data->type != w83697hf && data->vid != 0xff) {
                /* Convert VID to voltage based on VRM */
                data->vrm = vid_which_vrm();

                if ((err = device_create_file(dev, &dev_attr_cpu0_vid))
                 || (err = device_create_file(dev, &dev_attr_vrm)))
                        goto error;
        }

        if (data->type == w83627thf || data->type == w83637hf
            || data->type == w83687thf) {
                err = device_create_file(dev, &sensor_dev_attr_pwm3.dev_attr);
                if (err)
                        goto error;
        }

        if (data->type == w83637hf || data->type == w83687thf)
                if ((err = device_create_file(dev,
                                &sensor_dev_attr_pwm1_freq.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_pwm2_freq.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_pwm3_freq.dev_attr)))
                        goto error;

        if (data->type != w83627hf)
                if ((err = device_create_file(dev,
                                &sensor_dev_attr_pwm1_enable.dev_attr))
                 || (err = device_create_file(dev,
                                &sensor_dev_attr_pwm2_enable.dev_attr)))
                        goto error;

        if (data->type == w83627thf || data->type == w83637hf
            || data->type == w83687thf) {
                err = device_create_file(dev,
                                         &sensor_dev_attr_pwm3_enable.dev_attr);
                if (err)
                        goto error;
        }

        data->hwmon_dev = hwmon_device_register(dev);
        if (IS_ERR(data->hwmon_dev)) {
                err = PTR_ERR(data->hwmon_dev);
                goto error;
        }

        return 0;

 error:
        sysfs_remove_group(&dev->kobj, &w83627hf_group);
        sysfs_remove_group(&dev->kobj, &w83627hf_group_opt);
        return err;
}

static void w83627hf_remove(struct platform_device *pdev)
{
        struct w83627hf_data *data = platform_get_drvdata(pdev);

        hwmon_device_unregister(data->hwmon_dev);

        sysfs_remove_group(&pdev->dev.kobj, &w83627hf_group);
        sysfs_remove_group(&pdev->dev.kobj, &w83627hf_group_opt);
}

static struct platform_driver w83627hf_driver = {
        .driver = {
                .name   = DRVNAME,
                .pm     = W83627HF_DEV_PM_OPS,
        },
        .probe          = w83627hf_probe,
        .remove         = w83627hf_remove,
};

static int __init w83627hf_find(int sioaddr, unsigned short *addr,
                                struct w83627hf_sio_data *sio_data)
{
        int err;
        u16 val;

        static __initconst char *const names[] = {
                "W83627HF",
                "W83627THF",
                "W83697HF",
                "W83637HF",
                "W83687THF",
        };

        sio_data->sioaddr = sioaddr;
        err = superio_enter(sio_data);
        if (err)
                return err;

        err = -ENODEV;
        val = force_id ? force_id : superio_inb(sio_data, DEVID);
        switch (val) {
        case W627_DEVID:
                sio_data->type = w83627hf;
                break;
        case W627THF_DEVID:
                sio_data->type = w83627thf;
                break;
        case W697_DEVID:
                sio_data->type = w83697hf;
                break;
        case W637_DEVID:
                sio_data->type = w83637hf;
                break;
        case W687THF_DEVID:
                sio_data->type = w83687thf;
                break;
        case 0xff:      /* No device at all */
                goto exit;
        default:
                pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%02x)\n", val);
                goto exit;
        }

        superio_select(sio_data, W83627HF_LD_HWM);
        val = (superio_inb(sio_data, WINB_BASE_REG) << 8) |
               superio_inb(sio_data, WINB_BASE_REG + 1);
        *addr = val & WINB_ALIGNMENT;
        if (*addr == 0) {
                pr_warn("Base address not set, skipping\n");
                goto exit;
        }

        val = superio_inb(sio_data, WINB_ACT_REG);
        if (!(val & 0x01)) {
                pr_warn("Enabling HWM logical device\n");
                superio_outb(sio_data, WINB_ACT_REG, val | 0x01);
        }

        err = 0;
        pr_info(DRVNAME ": Found %s chip at %#x\n",
                names[sio_data->type], *addr);

 exit:
        superio_exit(sio_data);
        return err;
}

static int __init w83627hf_device_add(unsigned short address,
                                      const struct w83627hf_sio_data *sio_data)
{
        struct resource res = {
                .start  = address + WINB_REGION_OFFSET,
                .end    = address + WINB_REGION_OFFSET + WINB_REGION_SIZE - 1,
                .name   = DRVNAME,
                .flags  = IORESOURCE_IO,
        };
        int err;

        err = acpi_check_resource_conflict(&res);
        if (err)
                goto exit;

        pdev = platform_device_alloc(DRVNAME, address);
        if (!pdev) {
                err = -ENOMEM;
                pr_err("Device allocation failed\n");
                goto exit;
        }

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

        err = platform_device_add_data(pdev, sio_data,
                                       sizeof(struct w83627hf_sio_data));
        if (err) {
                pr_err("Platform data allocation failed\n");
                goto exit_device_put;
        }

        err = platform_device_add(pdev);
        if (err) {
                pr_err("Device addition failed (%d)\n", err);
                goto exit_device_put;
        }

        return 0;

exit_device_put:
        platform_device_put(pdev);
exit:
        return err;
}

static int __init sensors_w83627hf_init(void)
{
        int err;
        unsigned short address;
        struct w83627hf_sio_data sio_data;

        if (w83627hf_find(0x2e, &address, &sio_data)
         && w83627hf_find(0x4e, &address, &sio_data))
                return -ENODEV;

        err = platform_driver_register(&w83627hf_driver);
        if (err)
                goto exit;

        /* Sets global pdev as a side effect */
        err = w83627hf_device_add(address, &sio_data);
        if (err)
                goto exit_driver;

        return 0;

exit_driver:
        platform_driver_unregister(&w83627hf_driver);
exit:
        return err;
}

static void __exit sensors_w83627hf_exit(void)
{
        platform_device_unregister(pdev);
        platform_driver_unregister(&w83627hf_driver);
}

MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
              "Philip Edelbrock <phil@netroedge.com>, "
              "and Mark Studebaker <mdsxyz123@yahoo.com>");
MODULE_DESCRIPTION("W83627HF driver");
MODULE_LICENSE("GPL");

module_init(sensors_w83627hf_init);
module_exit(sensors_w83627hf_exit);