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w83627hf.c

/*
    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  Jean Delvare <khali@linux-fr.org>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/*
    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.
*/

#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 <asm/io.h>
#include "lm75.h"

static struct platform_device *pdev;

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

static u16 force_addr;
module_param(force_addr, ushort, 0);
MODULE_PARM_DESC(force_addr,
             "Initialize the base address of the sensors");
static u8 force_i2c = 0x1f;
module_param(force_i2c, byte, 0);
MODULE_PARM_DESC(force_i2c,
             "Initialize the i2c address of the sensors");

static int reset;
module_param(reset, bool, 0);
MODULE_PARM_DESC(reset, "Set to one to reset chip on load");

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

/* modified from kernel/include/traps.c */
static int REG;         /* The register to read/write */
#define     DEV   0x07  /* Register: Logical device select */
static int VAL;         /* The value to read/write */

/* 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(int reg, int val)
{
      outb(reg, REG);
      outb(val, VAL);
}

static inline int
superio_inb(int reg)
{
      outb(reg, REG);
      return inb(VAL);
}

static inline void
superio_select(int ld)
{
      outb(DEV, REG);
      outb(ld, VAL);
}

static inline void
superio_enter(void)
{
      outb(0x87, REG);
      outb(0x87, REG);
}

static inline void
superio_exit(void)
{
      outb(0xAA, REG);
}

#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

#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)  (SENSORS_LIMIT((((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 = SENSORS_LIMIT(rpm, 1, 1000000);
      return SENSORS_LIMIT((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 = SENSORS_LIMIT(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) (SENSORS_LIMIT((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)
#define BEEP_MASK_TO_REG(val)       ((val) & 0xffffff)
#define BEEP_ENABLE_TO_REG(val)           ((val)?1:0)
#define BEEP_ENABLE_FROM_REG(val)   ((val)?1:0)

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

static inline u8 DIV_TO_REG(long val)
{
      int i;
      val = SENSORS_LIMIT(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;
      char valid;       /* !=0 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 beep_enable;         /* Boolean */
      u8 pwm[3];        /* Register value */
      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 */
};

struct w83627hf_sio_data {
      enum chips type;
};


static int w83627hf_probe(struct platform_device *pdev);
static int __devexit w83627hf_remove(struct platform_device *pdev);

static int w83627hf_read_value(struct w83627hf_data *data, u16 reg);
static int w83627hf_write_value(struct w83627hf_data *data, u16 reg, u16 value);
static void w83627hf_update_fan_div(struct w83627hf_data *data);
static struct w83627hf_data *w83627hf_update_device(struct device *dev);
static void w83627hf_init_device(struct platform_device *pdev);

static struct platform_driver w83627hf_driver = {
      .driver = {
            .owner      = THIS_MODULE,
            .name = DRVNAME,
      },
      .probe            = w83627hf_probe,
      .remove           = __devexit_p(w83627hf_remove),
};

static ssize_t
show_in_input(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
show_in_min(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
show_in_max(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
store_in_min(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 = simple_strtol(buf, NULL, 10);

      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
store_in_max(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 = simple_strtol(buf, NULL, 10);

      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;
}
#define sysfs_vin_decl(offset) \
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO,            \
                    show_in_input, NULL, offset);           \
static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO|S_IWUSR,      \
                    show_in_min, store_in_min, offset);     \
static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO|S_IWUSR,      \
                    show_in_max, store_in_max, offset);

sysfs_vin_decl(1);
sysfs_vin_decl(2);
sysfs_vin_decl(3);
sysfs_vin_decl(4);
sysfs_vin_decl(5);
sysfs_vin_decl(6);
sysfs_vin_decl(7);
sysfs_vin_decl(8);

/* 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 show_regs_in_0(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 ssize_t show_regs_in_min0(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 show_regs_in_max0(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 store_regs_in_min0(struct device *dev, struct device_attribute *attr,
      const char *buf, size_t count)
{
      struct w83627hf_data *data = dev_get_drvdata(dev);
      u32 val;

      val = simple_strtoul(buf, NULL, 10);

      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] =
                  SENSORS_LIMIT(((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 ssize_t store_regs_in_max0(struct device *dev, struct device_attribute *attr,
      const char *buf, size_t count)
{
      struct w83627hf_data *data = dev_get_drvdata(dev);
      u32 val;

      val = simple_strtoul(buf, NULL, 10);

      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] =
                  SENSORS_LIMIT(((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(in0_input, S_IRUGO, show_regs_in_0, NULL);
static DEVICE_ATTR(in0_min, S_IRUGO | S_IWUSR,
      show_regs_in_min0, store_regs_in_min0);
static DEVICE_ATTR(in0_max, S_IRUGO | S_IWUSR,
      show_regs_in_max0, store_regs_in_max0);

static ssize_t
show_fan_input(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
show_fan_min(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
store_fan_min(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);
      u32 val = simple_strtoul(buf, NULL, 10);

      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;
}
#define sysfs_fan_decl(offset)      \
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO,                 \
                    show_fan_input, NULL, offset - 1);            \
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,         \
                    show_fan_min, store_fan_min, offset - 1);

sysfs_fan_decl(1);
sysfs_fan_decl(2);
sysfs_fan_decl(3);

static ssize_t
show_temp(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
show_temp_max(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
show_temp_max_hyst(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
store_temp_max(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 = simple_strtol(buf, NULL, 10);
      u16 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
store_temp_max_hyst(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 = simple_strtol(buf, NULL, 10);
      u16 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;
}

#define sysfs_temp_decl(offset) \
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO,          \
                    show_temp, NULL, offset - 1);                 \
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO|S_IWUSR,          \
                    show_temp_max, store_temp_max, offset - 1);   \
static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO|S_IWUSR,     \
                    show_temp_max_hyst, store_temp_max_hyst, offset - 1);

sysfs_temp_decl(1);
sysfs_temp_decl(2);
sysfs_temp_decl(3);

static ssize_t
show_vid_reg(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(cpu0_vid, S_IRUGO, show_vid_reg, NULL);

static ssize_t
show_vrm_reg(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
store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
      struct w83627hf_data *data = dev_get_drvdata(dev);
      u32 val;

      val = simple_strtoul(buf, NULL, 10);
      data->vrm = val;

      return count;
}
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);

static ssize_t
show_alarms_reg(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(alarms, S_IRUGO, show_alarms_reg, NULL);

#define show_beep_reg(REG, reg) \
static ssize_t show_beep_##reg (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
      struct w83627hf_data *data = w83627hf_update_device(dev); \
      return sprintf(buf,"%ld\n", \
                  (long)BEEP_##REG##_FROM_REG(data->beep_##reg)); \
}
show_beep_reg(ENABLE, enable)
show_beep_reg(MASK, mask)

#define BEEP_ENABLE                 0     /* Store beep_enable */
#define BEEP_MASK             1     /* Store beep_mask */

static ssize_t
store_beep_reg(struct device *dev, const char *buf, size_t count,
             int update_mask)
{
      struct w83627hf_data *data = dev_get_drvdata(dev);
      u32 val, val2;

      val = simple_strtoul(buf, NULL, 10);

      mutex_lock(&data->update_lock);

      if (update_mask == BEEP_MASK) {     /* We are storing beep_mask */
            data->beep_mask = 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);
            val2 = (data->beep_mask >> 8) & 0x7f;
      } else {          /* We are storing beep_enable */
            val2 =
                w83627hf_read_value(data, W83781D_REG_BEEP_INTS2) & 0x7f;
            data->beep_enable = BEEP_ENABLE_TO_REG(val);
      }

      w83627hf_write_value(data, W83781D_REG_BEEP_INTS2,
                      val2 | data->beep_enable << 7);

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

#define sysfs_beep(REG, reg) \
static ssize_t show_regs_beep_##reg (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
      return show_beep_##reg(dev, attr, buf); \
} \
static ssize_t \
store_regs_beep_##reg (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
{ \
      return store_beep_reg(dev, buf, count, BEEP_##REG); \
} \
static DEVICE_ATTR(beep_##reg, S_IRUGO | S_IWUSR, \
              show_regs_beep_##reg, store_regs_beep_##reg);

sysfs_beep(ENABLE, enable);
sysfs_beep(MASK, mask);

static ssize_t
show_fan_div(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
store_fan_div(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 = simple_strtoul(buf, NULL, 10);

      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(fan1_div, S_IRUGO|S_IWUSR,
                    show_fan_div, store_fan_div, 0);
static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO|S_IWUSR,
                    show_fan_div, store_fan_div, 1);
static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO|S_IWUSR,
                    show_fan_div, store_fan_div, 2);

static ssize_t
show_pwm(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
store_pwm(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);
      u32 val = simple_strtoul(buf, NULL, 10);

      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(pwm1, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO|S_IWUSR, show_pwm, store_pwm, 2);

static ssize_t
show_pwm_freq(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
store_pwm_freq(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};
      u32 val;

      val = simple_strtoul(buf, NULL, 10);

      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(pwm1_freq, S_IRUGO|S_IWUSR,
                    show_pwm_freq, store_pwm_freq, 0);
static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO|S_IWUSR,
                    show_pwm_freq, store_pwm_freq, 1);
static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO|S_IWUSR,
                    show_pwm_freq, store_pwm_freq, 2);

static ssize_t
show_temp_type(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
store_temp_type(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);
      u32 val, tmp;

      val = simple_strtoul(buf, NULL, 10);

      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);
            /* fall through */
      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;
}

#define sysfs_temp_type(offset) \
static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
                    show_temp_type, store_temp_type, offset - 1);

sysfs_temp_type(1);
sysfs_temp_type(2);
sysfs_temp_type(3);

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

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

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

      REG = sioaddr;
      VAL = sioaddr + 1;

      superio_enter();
      val= superio_inb(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(W83627HF_LD_HWM);
      force_addr &= WINB_ALIGNMENT;
      if (force_addr) {
            printk(KERN_WARNING DRVNAME ": Forcing address 0x%x\n",
                   force_addr);
            superio_outb(WINB_BASE_REG, force_addr >> 8);
            superio_outb(WINB_BASE_REG + 1, force_addr & 0xff);
      }
      val = (superio_inb(WINB_BASE_REG) << 8) |
             superio_inb(WINB_BASE_REG + 1);
      *addr = val & WINB_ALIGNMENT;
      if (*addr == 0) {
            printk(KERN_WARNING DRVNAME ": Base address not set, "
                   "skipping\n");
            goto exit;
      }

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

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

 exit:
      superio_exit();
      return err;
}

#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

#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

#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

static struct attribute *w83627hf_attributes[] = {
      &dev_attr_in0_input.attr,
      &dev_attr_in0_min.attr,
      &dev_attr_in0_max.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,
      &dev_attr_beep_enable.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 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,
      NULL
};

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

static int __devinit w83627hf_probe(struct platform_device *pdev)
{
      struct device *dev = &pdev->dev;
      struct w83627hf_sio_data *sio_data = dev->platform_data;
      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 (!request_region(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));
            err = -EBUSY;
            goto ERROR0;
      }

      if (!(data = kzalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) {
            err = -ENOMEM;
            goto ERROR1;
      }
      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 */
      if ((err = sysfs_create_group(&dev->kobj, &w83627hf_group)))
            goto ERROR3;

      /* 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_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_pwm1_freq.dev_attr))
             || (err = device_create_file(dev,
                        &sensor_dev_attr_pwm2_freq.dev_attr)))
                  goto ERROR4;

      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_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_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_type.dev_attr)))
                  goto ERROR4;

      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 ERROR4;
      }

      if (data->type == w83627thf || data->type == w83637hf
       || data->type == w83687thf)
            if ((err = device_create_file(dev,
                        &sensor_dev_attr_pwm3.dev_attr)))
                  goto ERROR4;

      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 ERROR4;

      data->hwmon_dev = hwmon_device_register(dev);
      if (IS_ERR(data->hwmon_dev)) {
            err = PTR_ERR(data->hwmon_dev);
            goto ERROR4;
      }

      return 0;

      ERROR4:
      sysfs_remove_group(&dev->kobj, &w83627hf_group);
      sysfs_remove_group(&dev->kobj, &w83627hf_group_opt);
      ERROR3:
      platform_set_drvdata(pdev, NULL);
      kfree(data);
      ERROR1:
      release_region(res->start, WINB_REGION_SIZE);
      ERROR0:
      return err;
}

static int __devexit w83627hf_remove(struct platform_device *pdev)
{
      struct w83627hf_data *data = platform_get_drvdata(pdev);
      struct resource *res;

      hwmon_device_unregister(data->hwmon_dev);

      sysfs_remove_group(&pdev->dev.kobj, &w83627hf_group);
      sysfs_remove_group(&pdev->dev.kobj, &w83627hf_group_opt);
      platform_set_drvdata(pdev, NULL);
      kfree(data);

      res = platform_get_resource(pdev, IORESOURCE_IO, 0);
      release_region(res->start, WINB_REGION_SIZE);

      return 0;
}


/* 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 __devinit w83627thf_read_gpio5(struct platform_device *pdev)
{
      int res = 0xff, sel;

      superio_enter();
      superio_select(W83627HF_LD_GPIO5);

      /* Make sure these GPIO pins are enabled */
      if (!(superio_inb(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(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(W83627THF_GPIO5_DR) & sel;

exit:
      superio_exit();
      return res;
}

static int __devinit w83687thf_read_vid(struct platform_device *pdev)
{
      int res = 0xff;

      superio_enter();
      superio_select(W83627HF_LD_HWM);

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

      res = superio_inb(W83687THF_VID_DATA) & 0x3f;

exit:
      superio_exit();
      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 __devinit w83627hf_init_device(struct platform_device *pdev)
{
      struct w83627hf_data *data = platform_get_drvdata(pdev);
      int i;
      enum chips type = data->type;
      u8 tmp;

      if (reset) {
            /* Resetting the chip has been the default for a long time,
               but repeatedly caused problems (fans going to full
               speed...) so it is now optional. It might even go away if
               nobody reports it as being useful, as I see very little
               reason why this would be needed at all. */
            dev_info(&pdev->dev, "If reset=1 solved a problem you were "
                   "having, please report!\n");

            /* save this register */
            i = w83627hf_read_value(data, W83781D_REG_BEEP_CONFIG);
            /* Reset all except Watchdog values and last conversion values
               This sets fan-divs to 2, among others */
            w83627hf_write_value(data, W83781D_REG_CONFIG, 0x80);
            /* Restore the register and disable power-on abnormal beep.
               This saves FAN 1/2/3 input/output values set by BIOS. */
            w83627hf_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80);
            /* Disable master beep-enable (reset turns it on).
               Individual beeps should be reset to off but for some reason
               disabling this bit helps some people not get beeped */
            w83627hf_write_value(data, W83781D_REG_BEEP_INTS2, 0);
      }

      /* Minimize conflicts with other winbond i2c-only clients...  */
      /* disable i2c subclients... how to disable main i2c client?? */
      /* force i2c address to relatively uncommon address */
      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);
}

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;

      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;
                  }
            }
            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_enable = i >> 7;
            data->beep_mask = ((i & 0x7f) << 8) |
                w83627hf_read_value(data, W83781D_REG_BEEP_INTS1) |
                w83627hf_read_value(data, W83781D_REG_BEEP_INTS3) << 16;
            data->last_updated = jiffies;
            data->valid = 1;
      }

      mutex_unlock(&data->update_lock);

      return data;
}

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;

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

      err = platform_device_add_resources(pdev, &res, 1);
      if (err) {
            printk(KERN_ERR DRVNAME ": 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) {
            printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
            goto exit_device_put;
      }

      err = platform_device_add(pdev);
      if (err) {
            printk(KERN_ERR DRVNAME ": 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);

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