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w83792d.c

/*
    w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
                monitoring
    Copyright (C) 2004, 2005 Winbond Electronics Corp.
                        Chunhao Huang <DZShen@Winbond.com.tw>,
                        Rudolf Marek <r.marek@assembler.cz>

    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.

    Note:
    1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
    2. This driver is only for Winbond W83792D C version device, there
       are also some motherboards with B version W83792D device. The
       calculation method to in6-in7(measured value, limits) is a little
       different between C and B version. C or B version can be identified
       by CR[0x49h].
*/

/*
    Supports following chips:

    Chip    #vin  #fanin      #pwm  #temp wchipid     vendid      i2c   ISA
    w83792d 9     7     7     3     0x7a  0x5ca3      yes   no
*/

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

/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };

/* Insmod parameters */
I2C_CLIENT_INSMOD_1(w83792d);
I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
                  "{bus, clientaddr, subclientaddr1, subclientaddr2}");

static int init;
module_param(init, bool, 0);
MODULE_PARM_DESC(init, "Set to one to force chip initialization");

/* The W83792D registers */
static const u8 W83792D_REG_IN[9] = {
      0x20, /* Vcore A in DataSheet */
      0x21, /* Vcore B in DataSheet */
      0x22, /* VIN0 in DataSheet */
      0x23, /* VIN1 in DataSheet */
      0x24, /* VIN2 in DataSheet */
      0x25, /* VIN3 in DataSheet */
      0x26, /* 5VCC in DataSheet */
      0xB0, /* 5VSB in DataSheet */
      0xB1  /* VBAT in DataSheet */
};
#define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
#define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
static const u8 W83792D_REG_IN_MAX[9] = {
      0x2B, /* Vcore A High Limit in DataSheet */
      0x2D, /* Vcore B High Limit in DataSheet */
      0x2F, /* VIN0 High Limit in DataSheet */
      0x31, /* VIN1 High Limit in DataSheet */
      0x33, /* VIN2 High Limit in DataSheet */
      0x35, /* VIN3 High Limit in DataSheet */
      0x37, /* 5VCC High Limit in DataSheet */
      0xB4, /* 5VSB High Limit in DataSheet */
      0xB6  /* VBAT High Limit in DataSheet */
};
static const u8 W83792D_REG_IN_MIN[9] = {
      0x2C, /* Vcore A Low Limit in DataSheet */
      0x2E, /* Vcore B Low Limit in DataSheet */
      0x30, /* VIN0 Low Limit in DataSheet */
      0x32, /* VIN1 Low Limit in DataSheet */
      0x34, /* VIN2 Low Limit in DataSheet */
      0x36, /* VIN3 Low Limit in DataSheet */
      0x38, /* 5VCC Low Limit in DataSheet */
      0xB5, /* 5VSB Low Limit in DataSheet */
      0xB7  /* VBAT Low Limit in DataSheet */
};
static const u8 W83792D_REG_FAN[7] = {
      0x28, /* FAN 1 Count in DataSheet */
      0x29, /* FAN 2 Count in DataSheet */
      0x2A, /* FAN 3 Count in DataSheet */
      0xB8, /* FAN 4 Count in DataSheet */
      0xB9, /* FAN 5 Count in DataSheet */
      0xBA, /* FAN 6 Count in DataSheet */
      0xBE  /* FAN 7 Count in DataSheet */
};
static const u8 W83792D_REG_FAN_MIN[7] = {
      0x3B, /* FAN 1 Count Low Limit in DataSheet */
      0x3C, /* FAN 2 Count Low Limit in DataSheet */
      0x3D, /* FAN 3 Count Low Limit in DataSheet */
      0xBB, /* FAN 4 Count Low Limit in DataSheet */
      0xBC, /* FAN 5 Count Low Limit in DataSheet */
      0xBD, /* FAN 6 Count Low Limit in DataSheet */
      0xBF  /* FAN 7 Count Low Limit in DataSheet */
};
#define W83792D_REG_FAN_CFG 0x84    /* FAN Configuration in DataSheet */
static const u8 W83792D_REG_FAN_DIV[4] = {
      0x47, /* contains FAN2 and FAN1 Divisor */
      0x5B, /* contains FAN4 and FAN3 Divisor */
      0x5C, /* contains FAN6 and FAN5 Divisor */
      0x9E  /* contains FAN7 Divisor. */
};
static const u8 W83792D_REG_PWM[7] = {
      0x81, /* FAN 1 Duty Cycle, be used to control */
      0x83, /* FAN 2 Duty Cycle, be used to control */
      0x94, /* FAN 3 Duty Cycle, be used to control */
      0xA3, /* FAN 4 Duty Cycle, be used to control */
      0xA4, /* FAN 5 Duty Cycle, be used to control */
      0xA5, /* FAN 6 Duty Cycle, be used to control */
      0xA6  /* FAN 7 Duty Cycle, be used to control */
};
#define W83792D_REG_BANK            0x4E
#define W83792D_REG_TEMP2_CONFIG    0xC2
#define W83792D_REG_TEMP3_CONFIG    0xCA

static const u8 W83792D_REG_TEMP1[3] = {
      0x27, /* TEMP 1 in DataSheet */
      0x39, /* TEMP 1 Over in DataSheet */
      0x3A, /* TEMP 1 Hyst in DataSheet */
};

static const u8 W83792D_REG_TEMP_ADD[2][6] = {
      { 0xC0,           /* TEMP 2 in DataSheet */
        0xC1,           /* TEMP 2(0.5 deg) in DataSheet */
        0xC5,           /* TEMP 2 Over High part in DataSheet */
        0xC6,           /* TEMP 2 Over Low part in DataSheet */
        0xC3,           /* TEMP 2 Thyst High part in DataSheet */
        0xC4 },   /* TEMP 2 Thyst Low part in DataSheet */
      { 0xC8,           /* TEMP 3 in DataSheet */
        0xC9,           /* TEMP 3(0.5 deg) in DataSheet */
        0xCD,           /* TEMP 3 Over High part in DataSheet */
        0xCE,           /* TEMP 3 Over Low part in DataSheet */
        0xCB,           /* TEMP 3 Thyst High part in DataSheet */
        0xCC }    /* TEMP 3 Thyst Low part in DataSheet */
};

static const u8 W83792D_REG_THERMAL[3] = {
      0x85, /* SmartFanI: Fan1 target value */
      0x86, /* SmartFanI: Fan2 target value */
      0x96  /* SmartFanI: Fan3 target value */
};

static const u8 W83792D_REG_TOLERANCE[3] = {
      0x87, /* (bit3-0)SmartFan Fan1 tolerance */
      0x87, /* (bit7-4)SmartFan Fan2 tolerance */
      0x97  /* (bit3-0)SmartFan Fan3 tolerance */
};

static const u8 W83792D_REG_POINTS[3][4] = {
      { 0x85,           /* SmartFanII: Fan1 temp point 1 */
        0xE3,           /* SmartFanII: Fan1 temp point 2 */
        0xE4,           /* SmartFanII: Fan1 temp point 3 */
        0xE5 },   /* SmartFanII: Fan1 temp point 4 */
      { 0x86,           /* SmartFanII: Fan2 temp point 1 */
        0xE6,           /* SmartFanII: Fan2 temp point 2 */
        0xE7,           /* SmartFanII: Fan2 temp point 3 */
        0xE8 },   /* SmartFanII: Fan2 temp point 4 */
      { 0x96,           /* SmartFanII: Fan3 temp point 1 */
        0xE9,           /* SmartFanII: Fan3 temp point 2 */
        0xEA,           /* SmartFanII: Fan3 temp point 3 */
        0xEB }    /* SmartFanII: Fan3 temp point 4 */
};

static const u8 W83792D_REG_LEVELS[3][4] = {
      { 0x88,           /* (bit3-0) SmartFanII: Fan1 Non-Stop */
        0x88,           /* (bit7-4) SmartFanII: Fan1 Level 1 */
        0xE0,           /* (bit7-4) SmartFanII: Fan1 Level 2 */
        0xE0 },   /* (bit3-0) SmartFanII: Fan1 Level 3 */
      { 0x89,           /* (bit3-0) SmartFanII: Fan2 Non-Stop */
        0x89,           /* (bit7-4) SmartFanII: Fan2 Level 1 */
        0xE1,           /* (bit7-4) SmartFanII: Fan2 Level 2 */
        0xE1 },   /* (bit3-0) SmartFanII: Fan2 Level 3 */
      { 0x98,           /* (bit3-0) SmartFanII: Fan3 Non-Stop */
        0x98,           /* (bit7-4) SmartFanII: Fan3 Level 1 */
        0xE2,           /* (bit7-4) SmartFanII: Fan3 Level 2 */
        0xE2 }    /* (bit3-0) SmartFanII: Fan3 Level 3 */
};

#define W83792D_REG_GPIO_EN         0x1A
#define W83792D_REG_CONFIG          0x40
#define W83792D_REG_VID_FANDIV            0x47
#define W83792D_REG_CHIPID          0x49
#define W83792D_REG_WCHIPID         0x58
#define W83792D_REG_CHIPMAN         0x4F
#define W83792D_REG_PIN             0x4B
#define W83792D_REG_I2C_SUBADDR           0x4A

#define W83792D_REG_ALARM1 0xA9           /* realtime status register1 */
#define W83792D_REG_ALARM2 0xAA           /* realtime status register2 */
#define W83792D_REG_ALARM3 0xAB           /* realtime status register3 */
#define W83792D_REG_CHASSIS 0x42    /* Bit 5: Case Open status bit */
#define W83792D_REG_CHASSIS_CLR 0x44      /* Bit 7: Case Open CLR_CHS/Reset bit */

/* control in0/in1 's limit modifiability */
#define W83792D_REG_VID_IN_B        0x17

#define W83792D_REG_VBAT            0x5D
#define W83792D_REG_I2C_ADDR        0x48

/* Conversions. Rounding and 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_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
                        ((((nr)==6)||((nr)==7))?(val*6):(val*4)))
#define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
                        ((((nr)==6)||((nr)==7))?(val/6):(val/4)))

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

/* for temp1 */
#define TEMP1_TO_REG(val)     (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
                              : (val)) / 1000, 0, 0xff))
#define TEMP1_FROM_REG(val)   (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
/* for temp2 and temp3, because they need addtional resolution */
#define TEMP_ADD_FROM_REG(val1, val2) \
      ((((val1) & 0x80 ? (val1)-0x100 \
            : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
#define TEMP_ADD_TO_REG_HIGH(val) \
      (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
                  : (val)) / 1000, 0, 0xff))
#define TEMP_ADD_TO_REG_LOW(val)    ((val%1000) ? 0x80 : 0x00)

#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);
}

struct w83792d_data {
      struct i2c_client client;
      struct device *hwmon_dev;
      enum chips type;

      struct mutex update_lock;
      char valid;       /* !=0 if following fields are valid */
      unsigned long last_updated;   /* In jiffies */

      /* array of 2 pointers to subclients */
      struct i2c_client *lm75[2];

      u8 in[9];         /* Register value */
      u8 in_max[9];           /* Register value */
      u8 in_min[9];           /* Register value */
      u16 low_bits;           /* Additional resolution to voltage in6-0 */
      u8 fan[7];        /* Register value */
      u8 fan_min[7];          /* Register value */
      u8 temp1[3];            /* current, over, thyst */
      u8 temp_add[2][6];      /* Register value */
      u8 fan_div[7];          /* Register encoding, shifted right */
      u8 pwm[7];        /* We only consider the first 3 set of pwm,
                           although 792 chip has 7 set of pwm. */
      u8 pwmenable[3];
      u32 alarms;       /* realtime status register encoding,combined */
      u8 chassis;       /* Chassis status */
      u8 chassis_clear; /* CLR_CHS, clear chassis intrusion detection */
      u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
      u8 tolerance[3];  /* Fan1,2,3 tolerance(Smart Fan I/II) */
      u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
      u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
};

static int w83792d_attach_adapter(struct i2c_adapter *adapter);
static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
static int w83792d_detach_client(struct i2c_client *client);
static struct w83792d_data *w83792d_update_device(struct device *dev);

#ifdef DEBUG
static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
#endif

static void w83792d_init_client(struct i2c_client *client);

static struct i2c_driver w83792d_driver = {
      .driver = {
            .name = "w83792d",
      },
      .attach_adapter = w83792d_attach_adapter,
      .detach_client = w83792d_detach_client,
};

static inline long in_count_from_reg(int nr, struct w83792d_data *data)
{
      /* in7 and in8 do not have low bits, but the formula still works */
      return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
}

/* The SMBus locks itself. The Winbond W83792D chip has a bank register,
   but the driver only accesses registers in bank 0, so we don't have
   to switch banks and lock access between switches. */
static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
{
      return i2c_smbus_read_byte_data(client, reg);
}

static inline int
w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
{
      return i2c_smbus_write_byte_data(client, reg, value);
}

/* following are the sysfs callback functions */
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
                  char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
}

#define show_in_reg(reg) \
static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
                  char *buf) \
{ \
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
      int nr = sensor_attr->index; \
      struct w83792d_data *data = w83792d_update_device(dev); \
      return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
}

show_in_reg(in_min);
show_in_reg(in_max);

#define store_in_reg(REG, reg) \
static ssize_t store_in_##reg (struct device *dev, \
                        struct device_attribute *attr, \
                        const char *buf, size_t count) \
{ \
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
      int nr = sensor_attr->index; \
      struct i2c_client *client = to_i2c_client(dev); \
      struct w83792d_data *data = i2c_get_clientdata(client); \
      u32 val; \
       \
      val = simple_strtoul(buf, NULL, 10); \
      mutex_lock(&data->update_lock); \
      data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
      w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
      mutex_unlock(&data->update_lock); \
       \
      return count; \
}
store_in_reg(MIN, min);
store_in_reg(MAX, max);

#define show_fan_reg(reg) \
static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
                  char *buf) \
{ \
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
      int nr = sensor_attr->index - 1; \
      struct w83792d_data *data = w83792d_update_device(dev); \
      return sprintf(buf,"%d\n", \
            FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
}

show_fan_reg(fan);
show_fan_reg(fan_min);

static ssize_t
store_fan_min(struct device *dev, struct device_attribute *attr,
            const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index - 1;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;

      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]));
      w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
                        data->fan_min[nr]);
      mutex_unlock(&data->update_lock);

      return count;
}

static ssize_t
show_fan_div(struct device *dev, struct device_attribute *attr,
            char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
}

/* 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 *attr,
            const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index - 1;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      unsigned long min;
      /*u8 reg;*/
      u8 fan_div_reg = 0;
      u8 tmp_fan_div;

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

      data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));

      fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
      fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
      tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
                              : ((data->fan_div[nr]) & 0x07);
      w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
                              fan_div_reg | tmp_fan_div);

      /* Restore fan_min */
      data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
      w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
      mutex_unlock(&data->update_lock);

      return count;
}

/* read/write the temperature1, includes measured value and limits */

static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
                        char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
}

static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
                        const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      s32 val;

      val = simple_strtol(buf, NULL, 10);
      mutex_lock(&data->update_lock);
      data->temp1[nr] = TEMP1_TO_REG(val);
      w83792d_write_value(client, W83792D_REG_TEMP1[nr],
            data->temp1[nr]);
      mutex_unlock(&data->update_lock);

      return count;
}

/* read/write the temperature2-3, includes measured value and limits */

static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
                        char *buf)
{
      struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
      int nr = sensor_attr->nr;
      int index = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf,"%ld\n",
            (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
                  data->temp_add[nr][index+1]));
}

static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
                        const char *buf, size_t count)
{
      struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
      int nr = sensor_attr->nr;
      int index = sensor_attr->index;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      s32 val;

      val = simple_strtol(buf, NULL, 10);
      mutex_lock(&data->update_lock);
      data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
      data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
      w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
            data->temp_add[nr][index]);
      w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
            data->temp_add[nr][index+1]);
      mutex_unlock(&data->update_lock);

      return count;
}

/* get reatime status of all sensors items: voltage, temp, fan */
static ssize_t
show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n", data->alarms);
}

static ssize_t show_alarm(struct device *dev,
                    struct device_attribute *attr, char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
}

static ssize_t
show_pwm(struct device *dev, struct device_attribute *attr,
            char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
}

static ssize_t
show_pwmenable(struct device *dev, struct device_attribute *attr,
                  char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index - 1;
      struct w83792d_data *data = w83792d_update_device(dev);
      long pwm_enable_tmp = 1;

      switch (data->pwmenable[nr]) {
      case 0:
            pwm_enable_tmp = 1; /* manual mode */
            break;
      case 1:
            pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
            break;
      case 2:
            pwm_enable_tmp = 2; /* Smart Fan II */
            break;
      }

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

static ssize_t
store_pwm(struct device *dev, struct device_attribute *attr,
            const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;

      mutex_lock(&data->update_lock);
      val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
      data->pwm[nr] = val;
      w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
      mutex_unlock(&data->update_lock);

      return count;
}

static ssize_t
store_pwmenable(struct device *dev, struct device_attribute *attr,
                  const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index - 1;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;
      u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;

      val = simple_strtoul(buf, NULL, 10);
      if (val < 1 || val > 3)
            return -EINVAL;

      mutex_lock(&data->update_lock);
      switch (val) {
      case 1:
            data->pwmenable[nr] = 0; /* manual mode */
            break;
      case 2:
            data->pwmenable[nr] = 2; /* Smart Fan II */
            break;
      case 3:
            data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
            break;
      }
      cfg1_tmp = data->pwmenable[0];
      cfg2_tmp = (data->pwmenable[1]) << 2;
      cfg3_tmp = (data->pwmenable[2]) << 4;
      cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
      fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
      w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
      mutex_unlock(&data->update_lock);

      return count;
}

static ssize_t
show_pwm_mode(struct device *dev, struct device_attribute *attr,
                  char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
}

static ssize_t
store_pwm_mode(struct device *dev, struct device_attribute *attr,
                  const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;

      val = simple_strtoul(buf, NULL, 10);
      if (val != 0 && val != 1)
            return -EINVAL;

      mutex_lock(&data->update_lock);
      data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
      if (val) {              /* PWM mode */
            data->pwm[nr] |= 0x80;
      } else {                /* DC mode */
            data->pwm[nr] &= 0x7f;
      }
      w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
      mutex_unlock(&data->update_lock);

      return count;
}

static ssize_t
show_regs_chassis(struct device *dev, struct device_attribute *attr,
                  char *buf)
{
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n", data->chassis);
}

static ssize_t
show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
{
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n", data->chassis_clear);
}

static ssize_t
store_chassis_clear(struct device *dev, struct device_attribute *attr,
                  const char *buf, size_t count)
{
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;
      u8 temp1 = 0, temp2 = 0;

      val = simple_strtoul(buf, NULL, 10);
      mutex_lock(&data->update_lock);
      data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
      temp1 = ((data->chassis_clear) << 7) & 0x80;
      temp2 = w83792d_read_value(client,
            W83792D_REG_CHASSIS_CLR) & 0x7f;
      w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
      mutex_unlock(&data->update_lock);

      return count;
}

/* For Smart Fan I / Thermal Cruise */
static ssize_t
show_thermal_cruise(struct device *dev, struct device_attribute *attr,
                  char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
}

static ssize_t
store_thermal_cruise(struct device *dev, struct device_attribute *attr,
                  const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index - 1;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;
      u8 target_tmp=0, target_mask=0;

      val = simple_strtoul(buf, NULL, 10);
      target_tmp = val;
      target_tmp = target_tmp & 0x7f;
      mutex_lock(&data->update_lock);
      target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
      data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
      w83792d_write_value(client, W83792D_REG_THERMAL[nr],
            (data->thermal_cruise[nr]) | target_mask);
      mutex_unlock(&data->update_lock);

      return count;
}

/* For Smart Fan I/Thermal Cruise and Smart Fan II */
static ssize_t
show_tolerance(struct device *dev, struct device_attribute *attr,
            char *buf)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
}

static ssize_t
store_tolerance(struct device *dev, struct device_attribute *attr,
            const char *buf, size_t count)
{
      struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
      int nr = sensor_attr->index - 1;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;
      u8 tol_tmp, tol_mask;

      val = simple_strtoul(buf, NULL, 10);
      mutex_lock(&data->update_lock);
      tol_mask = w83792d_read_value(client,
            W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
      tol_tmp = SENSORS_LIMIT(val, 0, 15);
      tol_tmp &= 0x0f;
      data->tolerance[nr] = tol_tmp;
      if (nr == 1) {
            tol_tmp <<= 4;
      }
      w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
            tol_mask | tol_tmp);
      mutex_unlock(&data->update_lock);

      return count;
}

/* For Smart Fan II */
static ssize_t
show_sf2_point(struct device *dev, struct device_attribute *attr,
            char *buf)
{
      struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
      int nr = sensor_attr->nr;
      int index = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
}

static ssize_t
store_sf2_point(struct device *dev, struct device_attribute *attr,
            const char *buf, size_t count)
{
      struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
      int nr = sensor_attr->nr - 1;
      int index = sensor_attr->index - 1;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;
      u8 mask_tmp = 0;

      val = simple_strtoul(buf, NULL, 10);
      mutex_lock(&data->update_lock);
      data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
      mask_tmp = w83792d_read_value(client,
                              W83792D_REG_POINTS[index][nr]) & 0x80;
      w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
            mask_tmp|data->sf2_points[index][nr]);
      mutex_unlock(&data->update_lock);

      return count;
}

static ssize_t
show_sf2_level(struct device *dev, struct device_attribute *attr,
            char *buf)
{
      struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
      int nr = sensor_attr->nr;
      int index = sensor_attr->index;
      struct w83792d_data *data = w83792d_update_device(dev);
      return sprintf(buf, "%d\n",
                  (((data->sf2_levels[index-1][nr]) * 100) / 15));
}

static ssize_t
store_sf2_level(struct device *dev, struct device_attribute *attr,
            const char *buf, size_t count)
{
      struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
      int nr = sensor_attr->nr;
      int index = sensor_attr->index - 1;
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      u32 val;
      u8 mask_tmp=0, level_tmp=0;

      val = simple_strtoul(buf, NULL, 10);
      mutex_lock(&data->update_lock);
      data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
      mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
            & ((nr==3) ? 0xf0 : 0x0f);
      if (nr==3) {
            level_tmp = data->sf2_levels[index][nr];
      } else {
            level_tmp = data->sf2_levels[index][nr] << 4;
      }
      w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
      mutex_unlock(&data->update_lock);

      return count;
}

/* This function is called when:
     * w83792d_driver is inserted (when this module is loaded), for each
       available adapter
     * when a new adapter is inserted (and w83792d_driver is still present) */
static int
w83792d_attach_adapter(struct i2c_adapter *adapter)
{
      if (!(adapter->class & I2C_CLASS_HWMON))
            return 0;
      return i2c_probe(adapter, &addr_data, w83792d_detect);
}


static int
w83792d_create_subclient(struct i2c_adapter *adapter,
                        struct i2c_client *new_client, int addr,
                        struct i2c_client **sub_cli)
{
      int err;
      struct i2c_client *sub_client;

      (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
      if (!(sub_client)) {
            return -ENOMEM;
      }
      sub_client->addr = 0x48 + addr;
      i2c_set_clientdata(sub_client, NULL);
      sub_client->adapter = adapter;
      sub_client->driver = &w83792d_driver;
      sub_client->flags = 0;
      strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
      if ((err = i2c_attach_client(sub_client))) {
            dev_err(&new_client->dev, "subclient registration "
                  "at address 0x%x failed\n", sub_client->addr);
            kfree(sub_client);
            return err;
      }
      return 0;
}


static int
w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
            struct i2c_client *new_client)
{
      int i, id, err;
      u8 val;
      struct w83792d_data *data = i2c_get_clientdata(new_client);

      id = i2c_adapter_id(adapter);
      if (force_subclients[0] == id && force_subclients[1] == address) {
            for (i = 2; i <= 3; i++) {
                  if (force_subclients[i] < 0x48 ||
                      force_subclients[i] > 0x4f) {
                        dev_err(&new_client->dev, "invalid subclient "
                              "address %d; must be 0x48-0x4f\n",
                              force_subclients[i]);
                        err = -ENODEV;
                        goto ERROR_SC_0;
                  }
            }
            w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
                              (force_subclients[2] & 0x07) |
                              ((force_subclients[3] & 0x07) << 4));
      }

      val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
      if (!(val & 0x08)) {
            err = w83792d_create_subclient(adapter, new_client, val & 0x7,
                                    &data->lm75[0]);
            if (err < 0)
                  goto ERROR_SC_0;
      }
      if (!(val & 0x80)) {
            if ((data->lm75[0] != NULL) &&
                  ((val & 0x7) == ((val >> 4) & 0x7))) {
                  dev_err(&new_client->dev, "duplicate addresses 0x%x, "
                        "use force_subclient\n", data->lm75[0]->addr);
                  err = -ENODEV;
                  goto ERROR_SC_1;
            }
            err = w83792d_create_subclient(adapter, new_client,
                                    (val >> 4) & 0x7, &data->lm75[1]);
            if (err < 0)
                  goto ERROR_SC_1;
      }

      return 0;

/* Undo inits in case of errors */

ERROR_SC_1:
      if (data->lm75[0] != NULL) {
            i2c_detach_client(data->lm75[0]);
            kfree(data->lm75[0]);
      }
ERROR_SC_0:
      return err;
}

static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 0);
static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 1);
static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 2);
static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 3);
static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 4);
static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 5);
static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 6);
static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 7);
static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
                  show_in_min, store_in_min, 8);
static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 0);
static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 1);
static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 2);
static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 3);
static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 4);
static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 5);
static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 6);
static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 7);
static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
                  show_in_max, store_in_max, 8);
static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
                  show_temp1, store_temp1, 0, 1);
static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
                  store_temp23, 0, 2);
static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
                  store_temp23, 1, 2);
static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
                  show_temp1, store_temp1, 0, 2);
static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
                  show_temp23, store_temp23, 0, 4);
static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
                  show_temp23, store_temp23, 1, 4);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
                  show_chassis_clear, store_chassis_clear);
static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
                  show_pwmenable, store_pwmenable, 1);
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
                  show_pwmenable, store_pwmenable, 2);
static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
                  show_pwmenable, store_pwmenable, 3);
static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
                  show_pwm_mode, store_pwm_mode, 0);
static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
                  show_pwm_mode, store_pwm_mode, 1);
static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
                  show_pwm_mode, store_pwm_mode, 2);
static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
                  show_tolerance, store_tolerance, 1);
static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
                  show_tolerance, store_tolerance, 2);
static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
                  show_tolerance, store_tolerance, 3);
static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
                  show_thermal_cruise, store_thermal_cruise, 1);
static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
                  show_thermal_cruise, store_thermal_cruise, 2);
static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
                  show_thermal_cruise, store_thermal_cruise, 3);
static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 1, 1);
static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 2, 1);
static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 3, 1);
static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 4, 1);
static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 1, 2);
static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 2, 2);
static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 3, 2);
static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 4, 2);
static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 1, 3);
static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 2, 3);
static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 3, 3);
static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
                  show_sf2_point, store_sf2_point, 4, 3);
static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 1, 1);
static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 2, 1);
static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 3, 1);
static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 1, 2);
static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 2, 2);
static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 3, 2);
static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 1, 3);
static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 2, 3);
static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
                  show_sf2_level, store_sf2_level, 3, 3);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
                  show_fan_min, store_fan_min, 1);
static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
                  show_fan_min, store_fan_min, 2);
static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
                  show_fan_min, store_fan_min, 3);
static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
                  show_fan_min, store_fan_min, 4);
static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
                  show_fan_min, store_fan_min, 5);
static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
                  show_fan_min, store_fan_min, 6);
static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
                  show_fan_min, store_fan_min, 7);
static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
                  show_fan_div, store_fan_div, 1);
static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
                  show_fan_div, store_fan_div, 2);
static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
                  show_fan_div, store_fan_div, 3);
static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
                  show_fan_div, store_fan_div, 4);
static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
                  show_fan_div, store_fan_div, 5);
static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
                  show_fan_div, store_fan_div, 6);
static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
                  show_fan_div, store_fan_div, 7);

static struct attribute *w83792d_attributes_fan[4][5] = {
      {
            &sensor_dev_attr_fan4_input.dev_attr.attr,
            &sensor_dev_attr_fan4_min.dev_attr.attr,
            &sensor_dev_attr_fan4_div.dev_attr.attr,
            &sensor_dev_attr_fan4_alarm.dev_attr.attr,
            NULL
      }, {
            &sensor_dev_attr_fan5_input.dev_attr.attr,
            &sensor_dev_attr_fan5_min.dev_attr.attr,
            &sensor_dev_attr_fan5_div.dev_attr.attr,
            &sensor_dev_attr_fan5_alarm.dev_attr.attr,
            NULL
      }, {
            &sensor_dev_attr_fan6_input.dev_attr.attr,
            &sensor_dev_attr_fan6_min.dev_attr.attr,
            &sensor_dev_attr_fan6_div.dev_attr.attr,
            &sensor_dev_attr_fan6_alarm.dev_attr.attr,
            NULL
      }, {
            &sensor_dev_attr_fan7_input.dev_attr.attr,
            &sensor_dev_attr_fan7_min.dev_attr.attr,
            &sensor_dev_attr_fan7_div.dev_attr.attr,
            &sensor_dev_attr_fan7_alarm.dev_attr.attr,
            NULL
      }
};

static const struct attribute_group w83792d_group_fan[4] = {
      { .attrs = w83792d_attributes_fan[0] },
      { .attrs = w83792d_attributes_fan[1] },
      { .attrs = w83792d_attributes_fan[2] },
      { .attrs = w83792d_attributes_fan[3] },
};

static struct attribute *w83792d_attributes[] = {
      &sensor_dev_attr_in0_input.dev_attr.attr,
      &sensor_dev_attr_in0_max.dev_attr.attr,
      &sensor_dev_attr_in0_min.dev_attr.attr,
      &sensor_dev_attr_in1_input.dev_attr.attr,
      &sensor_dev_attr_in1_max.dev_attr.attr,
      &sensor_dev_attr_in1_min.dev_attr.attr,
      &sensor_dev_attr_in2_input.dev_attr.attr,
      &sensor_dev_attr_in2_max.dev_attr.attr,
      &sensor_dev_attr_in2_min.dev_attr.attr,
      &sensor_dev_attr_in3_input.dev_attr.attr,
      &sensor_dev_attr_in3_max.dev_attr.attr,
      &sensor_dev_attr_in3_min.dev_attr.attr,
      &sensor_dev_attr_in4_input.dev_attr.attr,
      &sensor_dev_attr_in4_max.dev_attr.attr,
      &sensor_dev_attr_in4_min.dev_attr.attr,
      &sensor_dev_attr_in5_input.dev_attr.attr,
      &sensor_dev_attr_in5_max.dev_attr.attr,
      &sensor_dev_attr_in5_min.dev_attr.attr,
      &sensor_dev_attr_in6_input.dev_attr.attr,
      &sensor_dev_attr_in6_max.dev_attr.attr,
      &sensor_dev_attr_in6_min.dev_attr.attr,
      &sensor_dev_attr_in7_input.dev_attr.attr,
      &sensor_dev_attr_in7_max.dev_attr.attr,
      &sensor_dev_attr_in7_min.dev_attr.attr,
      &sensor_dev_attr_in8_input.dev_attr.attr,
      &sensor_dev_attr_in8_max.dev_attr.attr,
      &sensor_dev_attr_in8_min.dev_attr.attr,
      &sensor_dev_attr_in0_alarm.dev_attr.attr,
      &sensor_dev_attr_in1_alarm.dev_attr.attr,
      &sensor_dev_attr_in2_alarm.dev_attr.attr,
      &sensor_dev_attr_in3_alarm.dev_attr.attr,
      &sensor_dev_attr_in4_alarm.dev_attr.attr,
      &sensor_dev_attr_in5_alarm.dev_attr.attr,
      &sensor_dev_attr_in6_alarm.dev_attr.attr,
      &sensor_dev_attr_in7_alarm.dev_attr.attr,
      &sensor_dev_attr_in8_alarm.dev_attr.attr,
      &sensor_dev_attr_temp1_input.dev_attr.attr,
      &sensor_dev_attr_temp1_max.dev_attr.attr,
      &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
      &sensor_dev_attr_temp2_input.dev_attr.attr,
      &sensor_dev_attr_temp2_max.dev_attr.attr,
      &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
      &sensor_dev_attr_temp3_input.dev_attr.attr,
      &sensor_dev_attr_temp3_max.dev_attr.attr,
      &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
      &sensor_dev_attr_temp1_alarm.dev_attr.attr,
      &sensor_dev_attr_temp2_alarm.dev_attr.attr,
      &sensor_dev_attr_temp3_alarm.dev_attr.attr,
      &sensor_dev_attr_pwm1.dev_attr.attr,
      &sensor_dev_attr_pwm1_mode.dev_attr.attr,
      &sensor_dev_attr_pwm1_enable.dev_attr.attr,
      &sensor_dev_attr_pwm2.dev_attr.attr,
      &sensor_dev_attr_pwm2_mode.dev_attr.attr,
      &sensor_dev_attr_pwm2_enable.dev_attr.attr,
      &sensor_dev_attr_pwm3.dev_attr.attr,
      &sensor_dev_attr_pwm3_mode.dev_attr.attr,
      &sensor_dev_attr_pwm3_enable.dev_attr.attr,
      &dev_attr_alarms.attr,
      &dev_attr_chassis.attr,
      &dev_attr_chassis_clear.attr,
      &sensor_dev_attr_tolerance1.dev_attr.attr,
      &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
      &sensor_dev_attr_tolerance2.dev_attr.attr,
      &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
      &sensor_dev_attr_tolerance3.dev_attr.attr,
      &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
      &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
      &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
      &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
      &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
      &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
      &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
      &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
      &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
      &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
      &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
      &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
      &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
      &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
      &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
      &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
      &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
      &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
      &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
      &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
      &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
      &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
      &sensor_dev_attr_fan1_input.dev_attr.attr,
      &sensor_dev_attr_fan1_min.dev_attr.attr,
      &sensor_dev_attr_fan1_div.dev_attr.attr,
      &sensor_dev_attr_fan1_alarm.dev_attr.attr,
      &sensor_dev_attr_fan2_input.dev_attr.attr,
      &sensor_dev_attr_fan2_min.dev_attr.attr,
      &sensor_dev_attr_fan2_div.dev_attr.attr,
      &sensor_dev_attr_fan2_alarm.dev_attr.attr,
      &sensor_dev_attr_fan3_input.dev_attr.attr,
      &sensor_dev_attr_fan3_min.dev_attr.attr,
      &sensor_dev_attr_fan3_div.dev_attr.attr,
      &sensor_dev_attr_fan3_alarm.dev_attr.attr,
      NULL
};

static const struct attribute_group w83792d_group = {
      .attrs = w83792d_attributes,
};

static int
w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
{
      int i = 0, val1 = 0, val2;
      struct i2c_client *client;
      struct device *dev;
      struct w83792d_data *data;
      int err = 0;
      const char *client_name = "";

      if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
            goto ERROR0;
      }

      /* OK. For now, we presume we have a valid client. We now create the
         client structure, even though we cannot fill it completely yet.
         But it allows us to access w83792d_{read,write}_value. */

      if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
            err = -ENOMEM;
            goto ERROR0;
      }

      client = &data->client;
      dev = &client->dev;
      i2c_set_clientdata(client, data);
      client->addr = address;
      client->adapter = adapter;
      client->driver = &w83792d_driver;
      client->flags = 0;

      /* Now, we do the remaining detection. */

      /* The w83792d may be stuck in some other bank than bank 0. This may
         make reading other information impossible. Specify a force=... or
         force_*=... parameter, and the Winbond will be reset to the right
         bank. */
      if (kind < 0) {
            if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80) {
                  dev_dbg(dev, "Detection failed at step 1\n");
                  goto ERROR1;
            }
            val1 = w83792d_read_value(client, W83792D_REG_BANK);
            val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
            /* Check for Winbond ID if in bank 0 */
            if (!(val1 & 0x07)) {  /* is Bank0 */
                  if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
                       ((val1 & 0x80) && (val2 != 0x5c))) {
                        dev_dbg(dev, "Detection failed at step 2\n");
                        goto ERROR1;
                  }
            }
            /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
               should match */
            if (w83792d_read_value(client,
                              W83792D_REG_I2C_ADDR) != address) {
                  dev_dbg(dev, "Detection failed at step 3\n");
                  goto ERROR1;
            }
      }

      /* We have either had a force parameter, or we have already detected the
         Winbond. Put it now into bank 0 and Vendor ID High Byte */
      w83792d_write_value(client,
                      W83792D_REG_BANK,
                      (w83792d_read_value(client,
                        W83792D_REG_BANK) & 0x78) | 0x80);

      /* Determine the chip type. */
      if (kind <= 0) {
            /* get vendor ID */
            val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
            if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
                  goto ERROR1;
            }
            val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
            if (val1 == 0x7a) {
                  kind = w83792d;
            } else {
                  if (kind == 0)
                              dev_warn(dev,
                              "w83792d: Ignoring 'force' parameter for"
                              " unknown chip at adapter %d, address"
                              " 0x%02x\n", i2c_adapter_id(adapter),
                              address);
                  goto ERROR1;
            }
      }

      if (kind == w83792d) {
            client_name = "w83792d";
      } else {
            dev_err(dev, "w83792d: Internal error: unknown kind (%d)?!?\n",
                  kind);
            goto ERROR1;
      }

      /* Fill in the remaining client fields and put into the global list */
      strlcpy(client->name, client_name, I2C_NAME_SIZE);
      data->type = kind;

      data->valid = 0;
      mutex_init(&data->update_lock);

      /* Tell the I2C layer a new client has arrived */
      if ((err = i2c_attach_client(client)))
            goto ERROR1;

      if ((err = w83792d_detect_subclients(adapter, address,
                  kind, client)))
            goto ERROR2;

      /* Initialize the chip */
      w83792d_init_client(client);

      /* A few vars need to be filled upon startup */
      for (i = 0; i < 7; i++) {
            data->fan_min[i] = w83792d_read_value(client,
                              W83792D_REG_FAN_MIN[i]);
      }

      /* Register sysfs hooks */
      if ((err = sysfs_create_group(&dev->kobj, &w83792d_group)))
            goto ERROR3;

      /* Read GPIO enable register to check if pins for fan 4,5 are used as
         GPIO */
      val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);

      if (!(val1 & 0x40))
            if ((err = sysfs_create_group(&dev->kobj,
                                    &w83792d_group_fan[0])))
                  goto exit_remove_files;

      if (!(val1 & 0x20))
            if ((err = sysfs_create_group(&dev->kobj,
                                    &w83792d_group_fan[1])))
                  goto exit_remove_files;

      val1 = w83792d_read_value(client, W83792D_REG_PIN);
      if (val1 & 0x40)
            if ((err = sysfs_create_group(&dev->kobj,
                                    &w83792d_group_fan[2])))
                  goto exit_remove_files;

      if (val1 & 0x04)
            if ((err = sysfs_create_group(&dev->kobj,
                                    &w83792d_group_fan[3])))
                  goto exit_remove_files;

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

      return 0;

exit_remove_files:
      sysfs_remove_group(&dev->kobj, &w83792d_group);
      for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
            sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
ERROR3:
      if (data->lm75[0] != NULL) {
            i2c_detach_client(data->lm75[0]);
            kfree(data->lm75[0]);
      }
      if (data->lm75[1] != NULL) {
            i2c_detach_client(data->lm75[1]);
            kfree(data->lm75[1]);
      }
ERROR2:
      i2c_detach_client(client);
ERROR1:
      kfree(data);
ERROR0:
      return err;
}

static int
w83792d_detach_client(struct i2c_client *client)
{
      struct w83792d_data *data = i2c_get_clientdata(client);
      int err, i;

      /* main client */
      if (data) {
            hwmon_device_unregister(data->hwmon_dev);
            sysfs_remove_group(&client->dev.kobj, &w83792d_group);
            for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
                  sysfs_remove_group(&client->dev.kobj,
                                 &w83792d_group_fan[i]);
      }

      if ((err = i2c_detach_client(client)))
            return err;

      /* main client */
      if (data)
            kfree(data);
      /* subclient */
      else
            kfree(client);

      return 0;
}

static void
w83792d_init_client(struct i2c_client *client)
{
      u8 temp2_cfg, temp3_cfg, vid_in_b;

      if (init) {
            w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
      }
      /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
         W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
           vin0/vin1 can be modified by user;
         W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
           vin0/vin1 auto-updated, can NOT be modified by user. */
      vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
      w83792d_write_value(client, W83792D_REG_VID_IN_B,
                      vid_in_b & 0xbf);

      temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
      temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
      w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
                        temp2_cfg & 0xe6);
      w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
                        temp3_cfg & 0xe6);

      /* Start monitoring */
      w83792d_write_value(client, W83792D_REG_CONFIG,
                      (w83792d_read_value(client,
                                    W83792D_REG_CONFIG) & 0xf7)
                      | 0x01);
}

static struct w83792d_data *w83792d_update_device(struct device *dev)
{
      struct i2c_client *client = to_i2c_client(dev);
      struct w83792d_data *data = i2c_get_clientdata(client);
      int i, j;
      u8 reg_array_tmp[4], reg_tmp;

      mutex_lock(&data->update_lock);

      if (time_after
          (jiffies - data->last_updated, (unsigned long) (HZ * 3))
          || time_before(jiffies, data->last_updated) || !data->valid) {
            dev_dbg(dev, "Starting device update\n");

            /* Update the voltages measured value and limits */
            for (i = 0; i < 9; i++) {
                  data->in[i] = w83792d_read_value(client,
                                    W83792D_REG_IN[i]);
                  data->in_max[i] = w83792d_read_value(client,
                                    W83792D_REG_IN_MAX[i]);
                  data->in_min[i] = w83792d_read_value(client,
                                    W83792D_REG_IN_MIN[i]);
            }
            data->low_bits = w83792d_read_value(client,
                                    W83792D_REG_LOW_BITS1) +
                         (w83792d_read_value(client,
                                    W83792D_REG_LOW_BITS2) << 8);
            for (i = 0; i < 7; i++) {
                  /* Update the Fan measured value and limits */
                  data->fan[i] = w83792d_read_value(client,
                                    W83792D_REG_FAN[i]);
                  data->fan_min[i] = w83792d_read_value(client,
                                    W83792D_REG_FAN_MIN[i]);
                  /* Update the PWM/DC Value and PWM/DC flag */
                  data->pwm[i] = w83792d_read_value(client,
                                    W83792D_REG_PWM[i]);
            }

            reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
            data->pwmenable[0] = reg_tmp & 0x03;
            data->pwmenable[1] = (reg_tmp>>2) & 0x03;
            data->pwmenable[2] = (reg_tmp>>4) & 0x03;

            for (i = 0; i < 3; i++) {
                  data->temp1[i] = w83792d_read_value(client,
                                          W83792D_REG_TEMP1[i]);
            }
            for (i = 0; i < 2; i++) {
                  for (j = 0; j < 6; j++) {
                        data->temp_add[i][j] = w83792d_read_value(
                              client,W83792D_REG_TEMP_ADD[i][j]);
                  }
            }

            /* Update the Fan Divisor */
            for (i = 0; i < 4; i++) {
                  reg_array_tmp[i] = w83792d_read_value(client,
                                          W83792D_REG_FAN_DIV[i]);
            }
            data->fan_div[0] = reg_array_tmp[0] & 0x07;
            data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
            data->fan_div[2] = reg_array_tmp[1] & 0x07;
            data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
            data->fan_div[4] = reg_array_tmp[2] & 0x07;
            data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
            data->fan_div[6] = reg_array_tmp[3] & 0x07;

            /* Update the realtime status */
            data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
                  (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
                  (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);

            /* Update CaseOpen status and it's CLR_CHS. */
            data->chassis = (w83792d_read_value(client,
                  W83792D_REG_CHASSIS) >> 5) & 0x01;
            data->chassis_clear = (w83792d_read_value(client,
                  W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;

            /* Update Thermal Cruise/Smart Fan I target value */
            for (i = 0; i < 3; i++) {
                  data->thermal_cruise[i] =
                        w83792d_read_value(client,
                        W83792D_REG_THERMAL[i]) & 0x7f;
            }

            /* Update Smart Fan I/II tolerance */
            reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
            data->tolerance[0] = reg_tmp & 0x0f;
            data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
            data->tolerance[2] = w83792d_read_value(client,
                              W83792D_REG_TOLERANCE[2]) & 0x0f;

            /* Update Smart Fan II temperature points */
            for (i = 0; i < 3; i++) {
                  for (j = 0; j < 4; j++) {
                        data->sf2_points[i][j] = w83792d_read_value(
                              client,W83792D_REG_POINTS[i][j]) & 0x7f;
                  }
            }

            /* Update Smart Fan II duty cycle levels */
            for (i = 0; i < 3; i++) {
                  reg_tmp = w83792d_read_value(client,
                                    W83792D_REG_LEVELS[i][0]);
                  data->sf2_levels[i][0] = reg_tmp & 0x0f;
                  data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
                  reg_tmp = w83792d_read_value(client,
                                    W83792D_REG_LEVELS[i][2]);
                  data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
                  data->sf2_levels[i][3] = reg_tmp & 0x0f;
            }

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

      mutex_unlock(&data->update_lock);

#ifdef DEBUG
      w83792d_print_debug(data, dev);
#endif

      return data;
}

#ifdef DEBUG
static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
{
      int i=0, j=0;
      dev_dbg(dev, "==========The following is the debug message...========\n");
      dev_dbg(dev, "9 set of Voltages: =====>\n");
      for (i=0; i<9; i++) {
            dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
            dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
            dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
      }
      dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
      dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
      dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
      for (i=0; i<7; i++) {
            dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
            dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
            dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
      }
      dev_dbg(dev, "3 set of Temperatures: =====>\n");
      for (i=0; i<3; i++) {
            dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
      }

      for (i=0; i<2; i++) {
            for (j=0; j<6; j++) {
                  dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
                                          data->temp_add[i][j]);
            }
      }

      for (i=0; i<7; i++) {
            dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
      }
      dev_dbg(dev, "==========End of the debug message...==================\n");
      dev_dbg(dev, "\n");
}
#endif

static int __init
sensors_w83792d_init(void)
{
      return i2c_add_driver(&w83792d_driver);
}

static void __exit
sensors_w83792d_exit(void)
{
      i2c_del_driver(&w83792d_driver);
}

MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
MODULE_LICENSE("GPL");

module_init(sensors_w83792d_init);
module_exit(sensors_w83792d_exit);


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