hwmon: (w83793) Saving negative errors in unsigned
[safe/jmp/linux-2.6] / drivers / hwmon / w83792d.c
index d6d8c0f..679718e 100644 (file)
@@ -3,7 +3,7 @@
                 monitoring
     Copyright (C) 2004, 2005 Winbond Electronics Corp.
                         Chunhao Huang <DZShen@Winbond.com.tw>,
-                        Rudolf Marek <r.marek@sh.cvut.cz>
+                        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
     w83792d    9       7       7       3       0x7a    0x5ca3  yes     no
 */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
-#include <linux/i2c-vid.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 };
+static const 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: "
+
+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 int init;
@@ -194,6 +197,7 @@ static const u8 W83792D_REG_LEVELS[3][4] = {
          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
@@ -249,8 +253,6 @@ FAN_TO_REG(long rpm, int div)
                        : (val)) / 1000, 0, 0xff))
 #define TEMP_ADD_TO_REG_LOW(val)       ((val%1000) ? 0x80 : 0x00)
 
-#define PWM_FROM_REG(val)              (val)
-#define PWM_TO_REG(val)                        (SENSORS_LIMIT((val),0,255))
 #define DIV_FROM_REG(val)              (1 << (val))
 
 static inline u8
@@ -258,7 +260,7 @@ DIV_TO_REG(long val)
 {
        int i;
        val = SENSORS_LIMIT(val, 1, 128) >> 1;
-       for (i = 0; i < 6; i++) {
+       for (i = 0; i < 7; i++) {
                if (val == 0)
                        break;
                val >>= 1;
@@ -267,12 +269,9 @@ DIV_TO_REG(long val)
 }
 
 struct w83792d_data {
-       struct i2c_client client;
-       struct class_device *class_dev;
-       struct semaphore lock;
-       enum chips type;
+       struct device *hwmon_dev;
 
-       struct semaphore update_lock;
+       struct mutex update_lock;
        char valid;             /* !=0 if following fields are valid */
        unsigned long last_updated;     /* In jiffies */
 
@@ -282,7 +281,7 @@ struct w83792d_data {
        u8 in[9];               /* Register value */
        u8 in_max[9];           /* Register value */
        u8 in_min[9];           /* Register value */
-       u8 low_bits[2];         /* Additional resolution to voltage in0-6 */
+       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 */
@@ -291,7 +290,6 @@ struct w83792d_data {
        u8 pwm[7];              /* We only consider the first 3 set of pwm,
                                   although 792 chip has 7 set of pwm. */
        u8 pwmenable[3];
-       u8 pwm_mode[7];         /* indicates PWM or DC mode: 1->PWM; 0->DC */
        u32 alarms;             /* realtime status register encoding,combined */
        u8 chassis;             /* Chassis status */
        u8 chassis_clear;       /* CLR_CHS, clear chassis intrusion detection */
@@ -301,13 +299,11 @@ struct w83792d_data {
        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 int w83792d_read_value(struct i2c_client *client, u8 register);
-static int w83792d_write_value(struct i2c_client *client, u8 register,
-                               u8 value);
+static int w83792d_probe(struct i2c_client *client,
+                        const struct i2c_device_id *id);
+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
@@ -316,46 +312,42 @@ static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 
 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 = {
-       .owner = THIS_MODULE,
-       .name = "w83792d",
-       .flags = I2C_DF_NOTIFY,
-       .attach_adapter = w83792d_attach_adapter,
-       .detach_client = w83792d_detach_client,
+       .class          = I2C_CLASS_HWMON,
+       .driver = {
+               .name = "w83792d",
+       },
+       .probe          = w83792d_probe,
+       .remove         = w83792d_remove,
+       .id_table       = w83792d_id,
+       .detect         = w83792d_detect,
+       .address_list   = normal_i2c,
 };
 
-static long in_count_from_reg(int nr, struct w83792d_data *data)
+static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 {
-       u16 vol_count = data->in[nr];
-       u16 low_bits = 0;
-       vol_count = (vol_count << 2);
-       switch (nr)
-       {
-       case 0:  /* vin0 */
-               low_bits = (data->low_bits[0]) & 0x03;
-               break;
-       case 1:  /* vin1 */
-               low_bits = ((data->low_bits[0]) & 0x0c) >> 2;
-               break;
-       case 2:  /* vin2 */
-               low_bits = ((data->low_bits[0]) & 0x30) >> 4;
-               break;
-       case 3:  /* vin3 */
-               low_bits = ((data->low_bits[0]) & 0xc0) >> 6;
-               break;
-       case 4:  /* vin4 */
-               low_bits = (data->low_bits[1]) & 0x03;
-               break;
-       case 5:  /* vin5 */
-               low_bits = ((data->low_bits[1]) & 0x0c) >> 2;
-               break;
-       case 6:  /* vin6 */
-               low_bits = ((data->low_bits[1]) & 0x30) >> 4;
-       default:
-               break;
-       }
-       vol_count = vol_count | low_bits;
-       return vol_count;
+       /* 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 */
@@ -393,39 +385,16 @@ static ssize_t store_in_##reg (struct device *dev, \
        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 sysfs_in_reg(offset) \
-static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
-                               NULL, offset); \
-static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
-                               show_in_min, store_in_min, offset); \
-static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
-                               show_in_max, store_in_max, offset);
-
-sysfs_in_reg(0);
-sysfs_in_reg(1);
-sysfs_in_reg(2);
-sysfs_in_reg(3);
-sysfs_in_reg(4);
-sysfs_in_reg(5);
-sysfs_in_reg(6);
-sysfs_in_reg(7);
-sysfs_in_reg(8);
-
-#define device_create_file_in(client, offset) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_in##offset##_input.dev_attr); \
-device_create_file(&client->dev, &sensor_dev_attr_in##offset##_max.dev_attr); \
-device_create_file(&client->dev, &sensor_dev_attr_in##offset##_min.dev_attr); \
-} while (0)
-
 #define show_fan_reg(reg) \
 static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
                        char *buf) \
@@ -451,9 +420,11 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
        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;
 }
@@ -470,7 +441,7 @@ show_fan_div(struct device *dev, struct device_attribute *attr,
 
 /* 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 suprise; the user doesn't expect the fan minimum to change just
+   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,
@@ -486,6 +457,7 @@ store_fan_div(struct device *dev, struct device_attribute *attr,
        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]));
 
@@ -501,34 +473,11 @@ store_fan_div(struct device *dev, struct device_attribute *attr,
        /* 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;
 }
 
-#define sysfs_fan(offset) \
-static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
-                               offset); \
-static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
-                               show_fan_div, store_fan_div, offset); \
-static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
-                               show_fan_min, store_fan_min, offset);
-
-sysfs_fan(1);
-sysfs_fan(2);
-sysfs_fan(3);
-sysfs_fan(4);
-sysfs_fan(5);
-sysfs_fan(6);
-sysfs_fan(7);
-
-#define device_create_file_fan(client, offset) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_input.dev_attr); \
-device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_div.dev_attr); \
-device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_min.dev_attr); \
-} while (0)
-
-
 /* read/write the temperature1, includes measured value and limits */
 
 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
@@ -550,29 +499,15 @@ static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
        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;
 }
 
-
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0);
-static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1,
-                               store_temp1, 1);
-static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1,
-                               store_temp1, 2);
-
-#define device_create_file_temp1(client) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); \
-device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); \
-device_create_file(&client->dev, &sensor_dev_attr_temp1_max_hyst.dev_attr); \
-} while (0)
-
-
 /* read/write the temperature2-3, includes measured value and limits */
 
 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
@@ -598,37 +533,18 @@ static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
        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;
 }
 
-#define sysfs_temp23(name,idx) \
-static SENSOR_DEVICE_ATTR_2(name##_input, S_IRUGO, show_temp23, NULL, \
-                               idx, 0); \
-static SENSOR_DEVICE_ATTR_2(name##_max, S_IRUGO | S_IWUSR, \
-                               show_temp23, store_temp23, idx, 2); \
-static SENSOR_DEVICE_ATTR_2(name##_max_hyst, S_IRUGO | S_IWUSR, \
-                               show_temp23, store_temp23, idx, 4);
-
-sysfs_temp23(temp2,0)
-sysfs_temp23(temp3,1)
-
-#define device_create_file_temp_add(client, offset) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_input.dev_attr); \
-device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_max.dev_attr); \
-device_create_file(&client->dev, \
-&sensor_dev_attr_temp##offset##_max_hyst.dev_attr); \
-} while (0)
-
-
 /* 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)
@@ -637,12 +553,14 @@ show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
        return sprintf(buf, "%d\n", data->alarms);
 }
 
-static
-DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
-#define device_create_file_alarms(client) \
-device_create_file(&client->dev, &dev_attr_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,
@@ -651,7 +569,7 @@ show_pwm(struct device *dev, struct device_attribute *attr,
        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) PWM_FROM_REG(data->pwm[nr-1]));
+       return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 }
 
 static ssize_t
@@ -683,14 +601,16 @@ 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 - 1;
+       int nr = sensor_attr->index;
        struct i2c_client *client = to_i2c_client(dev);
        struct w83792d_data *data = i2c_get_clientdata(client);
-       u32 val;
+       u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
 
-       val = simple_strtoul(buf, NULL, 10);
-       data->pwm[nr] = PWM_TO_REG(val);
+       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;
 }
@@ -707,6 +627,10 @@ store_pwmenable(struct device *dev, struct device_attribute *attr,
        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 */
@@ -717,8 +641,6 @@ store_pwmenable(struct device *dev, struct device_attribute *attr,
        case 3:
                data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
                break;
-       default:
-               return -EINVAL;
        }
        cfg1_tmp = data->pwmenable[0];
        cfg2_tmp = (data->pwmenable[1]) << 2;
@@ -726,32 +648,11 @@ store_pwmenable(struct device *dev, struct device_attribute *attr,
        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;
 }
 
-#define sysfs_pwm(offset) \
-static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
-                               show_pwm, store_pwm, offset); \
-static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
-                               show_pwmenable, store_pwmenable, offset); \
-
-sysfs_pwm(1);
-sysfs_pwm(2);
-sysfs_pwm(3);
-
-
-#define device_create_file_pwm(client, offset) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_pwm##offset.dev_attr); \
-} while (0)
-
-#define device_create_file_pwmenable(client, offset) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_enable.dev_attr); \
-} while (0)
-
-
 static ssize_t
 show_pwm_mode(struct device *dev, struct device_attribute *attr,
                        char *buf)
@@ -759,7 +660,7 @@ show_pwm_mode(struct device *dev, struct device_attribute *attr,
        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_mode[nr-1]);
+       return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 }
 
 static ssize_t
@@ -767,36 +668,28 @@ 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 - 1;
+       int nr = sensor_attr->index;
        struct i2c_client *client = to_i2c_client(dev);
        struct w83792d_data *data = i2c_get_clientdata(client);
        u32 val;
-       u8 pwm_mode_mask = 0;
 
        val = simple_strtoul(buf, NULL, 10);
-       data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
-       pwm_mode_mask = w83792d_read_value(client,
-               W83792D_REG_PWM[nr]) & 0x7f;
-       w83792d_write_value(client, W83792D_REG_PWM[nr],
-               ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
+       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;
 }
 
-#define sysfs_pwm_mode(offset) \
-static SENSOR_DEVICE_ATTR(pwm##offset##_mode, S_IRUGO | S_IWUSR, \
-                               show_pwm_mode, store_pwm_mode, offset);
-
-sysfs_pwm_mode(1);
-sysfs_pwm_mode(2);
-sysfs_pwm_mode(3);
-
-#define device_create_file_pwm_mode(client, offset) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_mode.dev_attr); \
-} while (0)
-
-
 static ssize_t
 show_regs_chassis(struct device *dev, struct device_attribute *attr,
                        char *buf)
@@ -805,14 +698,6 @@ show_regs_chassis(struct device *dev, struct device_attribute *attr,
        return sprintf(buf, "%d\n", data->chassis);
 }
 
-static DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
-
-#define device_create_file_chassis(client) \
-do { \
-device_create_file(&client->dev, &dev_attr_chassis); \
-} while (0)
-
-
 static ssize_t
 show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
 {
@@ -830,26 +715,17 @@ store_chassis_clear(struct device *dev, struct device_attribute *attr,
        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;
 }
 
-static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
-               show_chassis_clear, store_chassis_clear);
-
-#define device_create_file_chassis_clear(client) \
-do { \
-device_create_file(&client->dev, &dev_attr_chassis_clear); \
-} while (0)
-
-
-
 /* For Smart Fan I / Thermal Cruise */
 static ssize_t
 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
@@ -875,29 +751,16 @@ store_thermal_cruise(struct device *dev, struct device_attribute *attr,
        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;
 }
 
-#define sysfs_thermal_cruise(offset) \
-static SENSOR_DEVICE_ATTR(thermal_cruise##offset, S_IRUGO | S_IWUSR, \
-                       show_thermal_cruise, store_thermal_cruise, offset);
-
-sysfs_thermal_cruise(1);
-sysfs_thermal_cruise(2);
-sysfs_thermal_cruise(3);
-
-#define device_create_file_thermal_cruise(client, offset) \
-do { \
-device_create_file(&client->dev, \
-&sensor_dev_attr_thermal_cruise##offset.dev_attr); \
-} while (0)
-
-
 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 static ssize_t
 show_tolerance(struct device *dev, struct device_attribute *attr,
@@ -921,6 +784,7 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
        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);
@@ -931,24 +795,11 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
        }
        w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
                tol_mask | tol_tmp);
+       mutex_unlock(&data->update_lock);
 
        return count;
 }
 
-#define sysfs_tolerance(offset) \
-static SENSOR_DEVICE_ATTR(tolerance##offset, S_IRUGO | S_IWUSR, \
-                               show_tolerance, store_tolerance, offset);
-
-sysfs_tolerance(1);
-sysfs_tolerance(2);
-sysfs_tolerance(3);
-
-#define device_create_file_tolerance(client, offset) \
-do { \
-device_create_file(&client->dev, &sensor_dev_attr_tolerance##offset.dev_attr); \
-} while (0)
-
-
 /* For Smart Fan II */
 static ssize_t
 show_sf2_point(struct device *dev, struct device_attribute *attr,
@@ -974,39 +825,17 @@ store_sf2_point(struct device *dev, struct device_attribute *attr,
        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;
 }
 
-#define sysfs_sf2_point(offset, index) \
-static SENSOR_DEVICE_ATTR_2(sf2_point##offset##_fan##index, S_IRUGO | S_IWUSR, \
-                               show_sf2_point, store_sf2_point, offset, index);
-
-sysfs_sf2_point(1, 1); /* Fan1 */
-sysfs_sf2_point(2, 1); /* Fan1 */
-sysfs_sf2_point(3, 1); /* Fan1 */
-sysfs_sf2_point(4, 1); /* Fan1 */
-sysfs_sf2_point(1, 2); /* Fan2 */
-sysfs_sf2_point(2, 2); /* Fan2 */
-sysfs_sf2_point(3, 2); /* Fan2 */
-sysfs_sf2_point(4, 2); /* Fan2 */
-sysfs_sf2_point(1, 3); /* Fan3 */
-sysfs_sf2_point(2, 3); /* Fan3 */
-sysfs_sf2_point(3, 3); /* Fan3 */
-sysfs_sf2_point(4, 3); /* Fan3 */
-
-#define device_create_file_sf2_point(client, offset, index) \
-do { \
-device_create_file(&client->dev, \
-&sensor_dev_attr_sf2_point##offset##_fan##index.dev_attr); \
-} while (0)
-
-
 static ssize_t
 show_sf2_level(struct device *dev, struct device_attribute *attr,
                char *buf)
@@ -1032,6 +861,7 @@ store_sf2_level(struct device *dev, struct device_attribute *attr,
        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);
@@ -1041,79 +871,19 @@ store_sf2_level(struct device *dev, struct device_attribute *attr,
                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;
 }
 
-#define sysfs_sf2_level(offset, index) \
-static SENSOR_DEVICE_ATTR_2(sf2_level##offset##_fan##index, S_IRUGO | S_IWUSR, \
-                               show_sf2_level, store_sf2_level, offset, index);
-
-sysfs_sf2_level(1, 1); /* Fan1 */
-sysfs_sf2_level(2, 1); /* Fan1 */
-sysfs_sf2_level(3, 1); /* Fan1 */
-sysfs_sf2_level(1, 2); /* Fan2 */
-sysfs_sf2_level(2, 2); /* Fan2 */
-sysfs_sf2_level(3, 2); /* Fan2 */
-sysfs_sf2_level(1, 3); /* Fan3 */
-sysfs_sf2_level(2, 3); /* Fan3 */
-sysfs_sf2_level(3, 3); /* Fan3 */
-
-#define device_create_file_sf2_level(client, offset, index) \
-do { \
-device_create_file(&client->dev, \
-&sensor_dev_attr_sf2_level##offset##_fan##index.dev_attr); \
-} while (0)
-
-
-/* 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 = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
-       if (!(sub_client)) {
-               return -ENOMEM;
-       }
-       memset(sub_client, 0x00, sizeof(struct i2c_client));
-       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)
+w83792d_detect_subclients(struct i2c_client *new_client)
 {
        int i, id, err;
+       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);
@@ -1135,10 +905,7 @@ w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
 
        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;
+               data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (val & 0x7));
        }
        if (!(val & 0x80)) {
                if ((data->lm75[0] != NULL) &&
@@ -1148,10 +915,8 @@ w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
                        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;
+               data->lm75[1] = i2c_new_dummy(adapter,
+                                             0x48 + ((val >> 4) & 0x7));
        }
 
        return 0;
@@ -1159,226 +924,463 @@ w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
 /* Undo inits in case of errors */
 
 ERROR_SC_1:
-       if (data->lm75[0] != NULL) {
-               i2c_detach_client(data->lm75[0]);
-               kfree(data->lm75[0]);
-       }
+       if (data->lm75[0] != NULL)
+               i2c_unregister_device(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,
+};
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
 static int
-w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
+w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
 {
-       int i = 0, val1 = 0, val2;
-       struct i2c_client *new_client;
-       struct w83792d_data *data;
-       int err = 0;
-       const char *client_name = "";
+       struct i2c_adapter *adapter = client->adapter;
+       int val1, val2;
+       unsigned short address = client->addr;
 
        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
-               goto ERROR0;
+               return -ENODEV;
        }
 
-       /* 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 (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
+               return -ENODEV;
 
-       if (!(data = kmalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
-               err = -ENOMEM;
-               goto ERROR0;
-       }
-       memset(data, 0, sizeof(struct w83792d_data));
-
-       new_client = &data->client;
-       i2c_set_clientdata(new_client, data);
-       new_client->addr = address;
-       init_MUTEX(&data->lock);
-       new_client->adapter = adapter;
-       new_client->driver = &w83792d_driver;
-       new_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(new_client, W83792D_REG_CONFIG) & 0x80) {
-                       dev_warn(&new_client->dev, "Detection failed at step "
-                               "3\n");
-                       goto ERROR1;
-               }
-               val1 = w83792d_read_value(new_client, W83792D_REG_BANK);
-               val2 = w83792d_read_value(new_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))) {
-                               goto ERROR1;
-                       }
-               }
-               /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
-                  should match */
-               if (w83792d_read_value(new_client,
-                                       W83792D_REG_I2C_ADDR) != address) {
-                       dev_warn(&new_client->dev, "Detection failed "
-                               "at step 5\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))
+                       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;
 
-       /* 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(new_client,
+       /*  Put it now into bank 0 and Vendor ID High Byte */
+       w83792d_write_value(client,
                            W83792D_REG_BANK,
-                           (w83792d_read_value(new_client,
+                           (w83792d_read_value(client,
                                W83792D_REG_BANK) & 0x78) | 0x80);
 
        /* Determine the chip type. */
-       if (kind <= 0) {
-               /* get vendor ID */
-               val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
-               if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
-                       goto ERROR1;
-               }
-               val1 = w83792d_read_value(new_client, W83792D_REG_WCHIPID);
-               if (val1 == 0x7a && address >= 0x2c) {
-                       kind = w83792d;
-               } else {
-                       if (kind == 0)
-                                       dev_warn(&new_client->dev,
-                                       "w83792d: Ignoring 'force' parameter for"
-                                       " unknown chip at adapter %d, address"
-                                       " 0x%02x\n", i2c_adapter_id(adapter),
-                                       address);
-                       goto ERROR1;
-               }
-       }
+       val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
+       val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
+       if (val1 != 0x7a || val2 != 0x5c)
+               return -ENODEV;
 
-       if (kind == w83792d) {
-               client_name = "w83792d";
-       } else {
-               dev_err(&new_client->dev, "w83792d: Internal error: unknown"
-                                         " kind (%d)?!?", kind);
-               goto ERROR1;
-       }
+       strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
 
-       /* Fill in the remaining client fields and put into the global list */
-       strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
-       data->type = kind;
+       return 0;
+}
+
+static int
+w83792d_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+       struct w83792d_data *data;
+       struct device *dev = &client->dev;
+       int i, val1, err;
+
+       data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL);
+       if (!data) {
+               err = -ENOMEM;
+               goto ERROR0;
+       }
 
+       i2c_set_clientdata(client, data);
        data->valid = 0;
-       init_MUTEX(&data->update_lock);
+       mutex_init(&data->update_lock);
 
-       /* Tell the I2C layer a new client has arrived */
-       if ((err = i2c_attach_client(new_client)))
+       err = w83792d_detect_subclients(client);
+       if (err)
                goto ERROR1;
 
-       if ((err = w83792d_detect_subclients(adapter, address,
-                       kind, new_client)))
-               goto ERROR2;
-
        /* Initialize the chip */
-       w83792d_init_client(new_client);
+       w83792d_init_client(client);
 
        /* A few vars need to be filled upon startup */
-       for (i = 1; i <= 7; i++) {
-               data->fan_min[i - 1] = w83792d_read_value(new_client,
+       for (i = 0; i < 7; i++) {
+               data->fan_min[i] = w83792d_read_value(client,
                                        W83792D_REG_FAN_MIN[i]);
        }
 
        /* Register sysfs hooks */
-       data->class_dev = hwmon_device_register(&new_client->dev);
-       if (IS_ERR(data->class_dev)) {
-               err = PTR_ERR(data->class_dev);
+       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;
        }
-       device_create_file_in(new_client, 0);
-       device_create_file_in(new_client, 1);
-       device_create_file_in(new_client, 2);
-       device_create_file_in(new_client, 3);
-       device_create_file_in(new_client, 4);
-       device_create_file_in(new_client, 5);
-       device_create_file_in(new_client, 6);
-       device_create_file_in(new_client, 7);
-       device_create_file_in(new_client, 8);
-
-       device_create_file_fan(new_client, 1);
-       device_create_file_fan(new_client, 2);
-       device_create_file_fan(new_client, 3);
-       device_create_file_fan(new_client, 4);
-       device_create_file_fan(new_client, 5);
-       device_create_file_fan(new_client, 6);
-       device_create_file_fan(new_client, 7);
-
-       device_create_file_temp1(new_client);           /* Temp1 */
-       device_create_file_temp_add(new_client, 2);     /* Temp2 */
-       device_create_file_temp_add(new_client, 3);     /* Temp3 */
-
-       device_create_file_alarms(new_client);
-
-       device_create_file_pwm(new_client, 1);
-       device_create_file_pwm(new_client, 2);
-       device_create_file_pwm(new_client, 3);
-
-       device_create_file_pwmenable(new_client, 1);
-       device_create_file_pwmenable(new_client, 2);
-       device_create_file_pwmenable(new_client, 3);
-
-       device_create_file_pwm_mode(new_client, 1);
-       device_create_file_pwm_mode(new_client, 2);
-       device_create_file_pwm_mode(new_client, 3);
-
-       device_create_file_chassis(new_client);
-       device_create_file_chassis_clear(new_client);
-
-       device_create_file_thermal_cruise(new_client, 1);
-       device_create_file_thermal_cruise(new_client, 2);
-       device_create_file_thermal_cruise(new_client, 3);
-
-       device_create_file_tolerance(new_client, 1);
-       device_create_file_tolerance(new_client, 2);
-       device_create_file_tolerance(new_client, 3);
-
-       device_create_file_sf2_point(new_client, 1, 1); /* Fan1 */
-       device_create_file_sf2_point(new_client, 2, 1); /* Fan1 */
-       device_create_file_sf2_point(new_client, 3, 1); /* Fan1 */
-       device_create_file_sf2_point(new_client, 4, 1); /* Fan1 */
-       device_create_file_sf2_point(new_client, 1, 2); /* Fan2 */
-       device_create_file_sf2_point(new_client, 2, 2); /* Fan2 */
-       device_create_file_sf2_point(new_client, 3, 2); /* Fan2 */
-       device_create_file_sf2_point(new_client, 4, 2); /* Fan2 */
-       device_create_file_sf2_point(new_client, 1, 3); /* Fan3 */
-       device_create_file_sf2_point(new_client, 2, 3); /* Fan3 */
-       device_create_file_sf2_point(new_client, 3, 3); /* Fan3 */
-       device_create_file_sf2_point(new_client, 4, 3); /* Fan3 */
-
-       device_create_file_sf2_level(new_client, 1, 1); /* Fan1 */
-       device_create_file_sf2_level(new_client, 2, 1); /* Fan1 */
-       device_create_file_sf2_level(new_client, 3, 1); /* Fan1 */
-       device_create_file_sf2_level(new_client, 1, 2); /* Fan2 */
-       device_create_file_sf2_level(new_client, 2, 2); /* Fan2 */
-       device_create_file_sf2_level(new_client, 3, 2); /* Fan2 */
-       device_create_file_sf2_level(new_client, 1, 3); /* Fan3 */
-       device_create_file_sf2_level(new_client, 2, 3); /* Fan3 */
-       device_create_file_sf2_level(new_client, 3, 3); /* Fan3 */
 
        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(new_client);
+       if (data->lm75[0] != NULL)
+               i2c_unregister_device(data->lm75[0]);
+       if (data->lm75[1] != NULL)
+               i2c_unregister_device(data->lm75[1]);
 ERROR1:
        kfree(data);
 ERROR0:
@@ -1386,51 +1388,26 @@ ERROR0:
 }
 
 static int
-w83792d_detach_client(struct i2c_client *client)
+w83792d_remove(struct i2c_client *client)
 {
        struct w83792d_data *data = i2c_get_clientdata(client);
-       int err;
-
-       /* main client */
-       if (data)
-               hwmon_device_unregister(data->class_dev);
-
-       if ((err = i2c_detach_client(client)))
-               return err;
-
-       /* main client */
-       if (data)
-               kfree(data);
-       /* subclient */
-       else
-               kfree(client);
-
-       return 0;
-}
+       int i;
 
-/* The SMBus locks itself, usually, but nothing may access the Winbond between
-   bank switches. ISA access must always be locked explicitly!
-   We ignore the W83792D BUSY flag at this moment - it could lead to deadlocks,
-   would slow down the W83792D access and should not be necessary.
-   There are some ugly typecasts here, but the good news is - they should
-   nowhere else be necessary! */
-static int
-w83792d_read_value(struct i2c_client *client, u8 reg)
-{
-       int res=0;
-       res = i2c_smbus_read_byte_data(client, reg);
+       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 res;
-}
+       if (data->lm75[0] != NULL)
+               i2c_unregister_device(data->lm75[0]);
+       if (data->lm75[1] != NULL)
+               i2c_unregister_device(data->lm75[1]);
 
-static int
-w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
-{
-       i2c_smbus_write_byte_data(client, reg,  value);
+       kfree(data);
        return 0;
 }
 
-/* Called when we have found a new W83792D. It should set limits, etc. */
 static void
 w83792d_init_client(struct i2c_client *client)
 {
@@ -1467,9 +1444,9 @@ 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], pwm_array_tmp[7], reg_tmp;
+       u8 reg_array_tmp[4], reg_tmp;
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
 
        if (time_after
            (jiffies - data->last_updated, (unsigned long) (HZ * 3))
@@ -1485,10 +1462,10 @@ static struct w83792d_data *w83792d_update_device(struct device *dev)
                        data->in_min[i] = w83792d_read_value(client,
                                                W83792D_REG_IN_MIN[i]);
                }
-               data->low_bits[0] = w83792d_read_value(client,
-                                               W83792D_REG_LOW_BITS1);
-               data->low_bits[1] = w83792d_read_value(client,
-                                               W83792D_REG_LOW_BITS2);
+               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,
@@ -1496,10 +1473,8 @@ static struct w83792d_data *w83792d_update_device(struct device *dev)
                        data->fan_min[i] = w83792d_read_value(client,
                                                W83792D_REG_FAN_MIN[i]);
                        /* Update the PWM/DC Value and PWM/DC flag */
-                       pwm_array_tmp[i] = w83792d_read_value(client,
+                       data->pwm[i] = w83792d_read_value(client,
                                                W83792D_REG_PWM[i]);
-                       data->pwm[i] = pwm_array_tmp[i] & 0x0f;
-                       data->pwm_mode[i] = (pwm_array_tmp[i] >> 7) & 0x01;
                }
 
                reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
@@ -1580,7 +1555,7 @@ static struct w83792d_data *w83792d_update_device(struct device *dev)
                data->valid = 1;
        }
 
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
 
 #ifdef DEBUG
        w83792d_print_debug(data, dev);
@@ -1600,14 +1575,13 @@ static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
                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[0]);
-       dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits[1]);
+       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, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
        }
        dev_dbg(dev, "3 set of Temperatures: =====>\n");
        for (i=0; i<3; i++) {