// SPDX-License-Identifier: GPL-2.0-or-later

  /*

   * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
   *	       monitoring
   * Copyright (C) 2004, 2005 Winbond Electronics Corp.

   *			    Shane Huang,

   *			    Rudolf Marek <r.marek@assembler.cz>
   *

   * 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>

  #include <linux/jiffies.h>

  
  /* Addresses to scan */

  static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  						I2C_CLIENT_END };

  
  /* Insmod parameters */

  
  static unsigned short force_subclients[4];
  module_param_array(force_subclients, short, NULL, 0);

  MODULE_PARM_DESC(force_subclients,
  		 "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");

  static bool 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 = clamp_val(rpm, 1, 1000000);
  	return clamp_val((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)	(clamp_val(((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 additional 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) \

  	(clamp_val(((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 = clamp_val(val, 1, 128) >> 1;

  	for (i = 0; i < 7; i++) {

  		if (val == 0)
  			break;
  		val >>= 1;
  	}

  	return (u8)i;

  }
  
  struct w83792d_data {

  	struct device *hwmon_dev;

  	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];		/* The 7 PWM outputs */

  	u8 pwmenable[3];

  	u32 alarms;		/* realtime status register encoding,combined */
  	u8 chassis;		/* Chassis status */

  	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_probe(struct i2c_client *client);

  static int w83792d_detect(struct i2c_client *client,

  			  struct i2c_board_info *info);
  static int w83792d_remove(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 const struct i2c_device_id w83792d_id[] = {

  	{ "w83792d", 0 },

  	{ }
  };
  MODULE_DEVICE_TABLE(i2c, w83792d_id);

  static struct i2c_driver w83792d_driver = {

  	.class		= I2C_CLASS_HWMON,

  	.driver = {

  		.name = "w83792d",
  	},

  	.probe_new	= w83792d_probe,

  	.remove		= w83792d_remove,
  	.id_table	= w83792d_id,
  	.detect		= w83792d_detect,

  	.address_list	= normal_i2c,

  };

  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
  ",
  		       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
  ", \
  		       (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); \

  	unsigned long val; \
  	int err = kstrtoul(buf, 10, &val); \
  	if (err) \
  		return err; \

  	mutex_lock(&data->update_lock); \

  	data->in_##reg[nr] = clamp_val(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
  ", \

  		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);

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

  	mutex_lock(&data->update_lock);

  	data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
  	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
  ", 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;

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

  
  	/* 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(val);

  
  	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
  ", 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);

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

  	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
  ",

  		(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);

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

  	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 realtime status of all sensors items: voltage, temp, fan */

  static ssize_t

  alarms_show(struct device *dev, struct device_attribute *attr, char *buf)

  {
  	struct w83792d_data *data = w83792d_update_device(dev);
  	return sprintf(buf, "%d
  ", 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
  ", (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
  ", (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
  ", 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);

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

  	val = clamp_val(val, 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);

  	u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;

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

  	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
  ", 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);

  	unsigned long val;
  	int err;

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

  intrusion0_alarm_show(struct device *dev, struct device_attribute *attr,
  		      char *buf)

  {
  	struct w83792d_data *data = w83792d_update_device(dev);
  	return sprintf(buf, "%d
  ", data->chassis);
  }

  static ssize_t

  intrusion0_alarm_store(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);
  	unsigned long val;
  	u8 reg;

  	if (kstrtoul(buf, 10, &val) || val != 0)

  		return -EINVAL;
  
  	mutex_lock(&data->update_lock);
  	reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
  	w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
  	data->valid = 0;		/* Force cache refresh */
  	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
  ", (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);

  	u8 target_tmp = 0, target_mask = 0;
  	unsigned long val;
  	int err;
  
  	err = kstrtoul(buf, 10, &val);
  	if (err)
  		return err;

  	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] = clamp_val(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
  ", (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);

  	u8 tol_tmp, tol_mask;

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

  	mutex_lock(&data->update_lock);

  	tol_mask = w83792d_read_value(client,
  		W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);

  	tol_tmp = clamp_val(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
  ", (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);

  	u8 mask_tmp = 0;

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

  	mutex_lock(&data->update_lock);

  	data->sf2_points[index][nr] = clamp_val(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
  ",
  			(((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);

  	u8 mask_tmp = 0, level_tmp = 0;
  	unsigned long val;
  	int err;
  
  	err = kstrtoul(buf, 10, &val);
  	if (err)
  		return err;

  	mutex_lock(&data->update_lock);

  	data->sf2_levels[index][nr] = clamp_val((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;
  }

  
  static int

  w83792d_detect_subclients(struct i2c_client *new_client)

  {

  	int i, id;

  	int address = new_client->addr;

  	u8 val;

  	struct i2c_adapter *adapter = new_client->adapter;

  	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
  ",

  					force_subclients[i]);

  				return -ENODEV;

  			}
  		}
  		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))

  		data->lm75[0] = devm_i2c_new_dummy_device(&new_client->dev, adapter,
  							  0x48 + (val & 0x7));

  	if (!(val & 0x80)) {

  		if (!IS_ERR(data->lm75[0]) &&

  			((val & 0x7) == ((val >> 4) & 0x7))) {

  			dev_err(&new_client->dev,
  				"duplicate addresses 0x%x, use force_subclient
  ",
  				data->lm75[0]->addr);

  			return -ENODEV;

  		}

  		data->lm75[1] = devm_i2c_new_dummy_device(&new_client->dev, adapter,
  							  0x48 + ((val >> 4) & 0x7));

  	}
  
  	return 0;

  }

  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_RO(alarms);

  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_RW(intrusion0_alarm);

  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(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
  static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
  static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
  static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);

  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(pwm4_mode, S_IWUSR | S_IRUGO,
  			show_pwm_mode, store_pwm_mode, 3);
  static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
  			show_pwm_mode, store_pwm_mode, 4);
  static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
  			show_pwm_mode, store_pwm_mode, 5);
  static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
  			show_pwm_mode, store_pwm_mode, 6);

  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][7] = {

  	{
  		&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,

  		&sensor_dev_attr_pwm4.dev_attr.attr,
  		&sensor_dev_attr_pwm4_mode.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,

  		&sensor_dev_attr_pwm5.dev_attr.attr,
  		&sensor_dev_attr_pwm5_mode.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,

  		&sensor_dev_attr_pwm6.dev_attr.attr,
  		&sensor_dev_attr_pwm6_mode.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,

  		&sensor_dev_attr_pwm7.dev_attr.attr,
  		&sensor_dev_attr_pwm7_mode.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_intrusion0_alarm.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,
  };

  /* Return 0 if detection is successful, -ENODEV otherwise */

  static int

  w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)

  {

  	struct i2c_adapter *adapter = client->adapter;
  	int val1, val2;
  	unsigned short address = client->addr;

  	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))

  		return -ENODEV;

  	if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
  		return -ENODEV;
  
  	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))

  			return -ENODEV;

  	}

  	/*
  	 * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
  	 * should match
  	 */

  	if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
  		return -ENODEV;

  	/*  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. */

  	val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
  	val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
  	if (val1 != 0x7a || val2 != 0x5c)
  		return -ENODEV;

  	strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
  
  	return 0;
  }
  
  static int

  w83792d_probe(struct i2c_client *client)

  {
  	struct w83792d_data *data;
  	struct device *dev = &client->dev;
  	int i, val1, err;

  	data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
  	if (!data)
  		return -ENOMEM;

  	i2c_set_clientdata(client, data);

  	mutex_init(&data->update_lock);

  	err = w83792d_detect_subclients(client);
  	if (err)

  		return err;

  	/* 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 */

  	err = sysfs_create_group(&dev->kobj, &w83792d_group);
  	if (err)

  		return err;

  	/*
  	 * 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)) {
  		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
  		if (err)

  			goto exit_remove_files;

  	}

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

  			goto exit_remove_files;

  	}

  	val1 = w83792d_read_value(client, W83792D_REG_PIN);

  	if (val1 & 0x40) {
  		err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
  		if (err)

  			goto exit_remove_files;

  	}

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

  			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]);

  	return err;
  }
  
  static int

  w83792d_remove(struct i2c_client *client)

  {

  	struct w83792d_data *data = i2c_get_clientdata(client);

  	int i;

  	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]);

  	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
  ");
  
  		/* 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;

  
  		/* 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...========
  ");
  	dev_dbg(dev, "9 set of Voltages: =====>
  ");

  	for (i = 0; i < 9; i++) {

  		dev_dbg(dev, "vin[%d] is: 0x%x
  ", i, data->in[i]);
  		dev_dbg(dev, "vin[%d] max is: 0x%x
  ", i, data->in_max[i]);
  		dev_dbg(dev, "vin[%d] min is: 0x%x
  ", i, data->in_min[i]);
  	}

  	dev_dbg(dev, "Low Bit1 is: 0x%x
  ", data->low_bits & 0xff);
  	dev_dbg(dev, "Low Bit2 is: 0x%x
  ", data->low_bits >> 8);

  	dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>
  ");

  	for (i = 0; i < 7; i++) {

  		dev_dbg(dev, "fan[%d] is: 0x%x
  ", i, data->fan[i]);
  		dev_dbg(dev, "fan[%d] min is: 0x%x
  ", i, data->fan_min[i]);
  		dev_dbg(dev, "pwm[%d]     is: 0x%x
  ", i, data->pwm[i]);

  	}
  	dev_dbg(dev, "3 set of Temperatures: =====>
  ");

  	for (i = 0; i < 3; i++)

  		dev_dbg(dev, "temp1[%d] is: 0x%x
  ", 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
  ", i, j,
  							data->temp_add[i][j]);
  		}
  	}

  	for (i = 0; i < 7; i++)

  		dev_dbg(dev, "fan_div[%d] is: 0x%x
  ", i, data->fan_div[i]);

  
  	dev_dbg(dev, "==========End of the debug message...================
  ");

  	dev_dbg(dev, "
  ");
  }
  #endif

  module_i2c_driver(w83792d_driver);

  MODULE_AUTHOR("Shane Huang (Winbond)");

  MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
  MODULE_LICENSE("GPL");