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/*

 * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware

 *             monitoring

 * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and

 * Kyosti Malkki <kmalkki@cc.hut.fi>

 * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and

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

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 *

 * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare

 * and advice of Greg Kroah-Hartman.

 *

 * Notes about the port:

 * Release 0x00 of the GL518SM chipset doesn't support reading of in0,

 * in1 nor in2. The original driver had an ugly workaround to get them

 * anyway (changing limits and watching alarms trigger and wear off).

 * We did not keep that part of the original driver in the Linux 2.6

 * version, since it was making the driver significantly more complex

 * with no real benefit.

 *

 * History:

 * 2004-01-28  Original port. (Hong-Gunn Chew)

 * 2004-01-31  Code review and approval. (Jean Delvare)

 */

#include <linux/module.h>

#include <linux/init.h>

#include <linux/slab.h>

#include <linux/jiffies.h>

#include <linux/i2c.h>

#include <linux/hwmon.h>

#include <linux/err.h>

#include <linux/mutex.h>

#include <linux/sysfs.h>

/* Addresses to scan */

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

/* Insmod parameters */

I2C_CLIENT_INSMOD_2(gl518sm_r00, gl518sm_r80);

/* Many GL518 constants specified below */

/* The GL518 registers */

#define GL518_REG_CHIP_ID       0x00

#define GL518_REG_REVISION      0x01

#define GL518_REG_VENDOR_ID     0x02

#define GL518_REG_CONF          0x03

#define GL518_REG_TEMP_IN       0x04

#define GL518_REG_TEMP_MAX      0x05

#define GL518_REG_TEMP_HYST     0x06

#define GL518_REG_FAN_COUNT     0x07

#define GL518_REG_FAN_LIMIT     0x08

#define GL518_REG_VIN1_LIMIT    0x09

#define GL518_REG_VIN2_LIMIT    0x0a

#define GL518_REG_VIN3_LIMIT    0x0b

#define GL518_REG_VDD_LIMIT     0x0c

#define GL518_REG_VIN3          0x0d

#define GL518_REG_MISC          0x0f

#define GL518_REG_ALARM         0x10

#define GL518_REG_MASK          0x11

#define GL518_REG_INT           0x12

#define GL518_REG_VIN2          0x13

#define GL518_REG_VIN1          0x14

#define GL518_REG_VDD           0x15

/*

 * 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 RAW_FROM_REG(val)       val

#define BOOL_FROM_REG(val)      ((val)?0:1)

#define BOOL_TO_REG(val)        ((val)?0:1)

#define TEMP_TO_REG(val)        (SENSORS_LIMIT(((((val)<0? \

                                (val)-500:(val)+500)/1000)+119),0,255))

#define TEMP_FROM_REG(val)      (((val) - 119) * 1000)

static inline u8 FAN_TO_REG(long rpm, int div)

{

        long rpmdiv;

        if (rpm == 0)

                return 0;

        rpmdiv = SENSORS_LIMIT(rpm, 1, 1920000) * div;

        return SENSORS_LIMIT((960000 + rpmdiv / 2) / rpmdiv, 1, 255);

}

#define FAN_FROM_REG(val,div)   ((val)==0 ? 0 : (960000/((val)*(div))))

#define IN_TO_REG(val)          (SENSORS_LIMIT((((val)+9)/19),0,255))

#define IN_FROM_REG(val)        ((val)*19)

#define VDD_TO_REG(val)         (SENSORS_LIMIT((((val)*4+47)/95),0,255))

#define VDD_FROM_REG(val)       (((val)*95+2)/4)

#define DIV_TO_REG(val)         ((val)==4?2:(val)==2?1:(val)==1?0:3)

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

#define BEEP_MASK_TO_REG(val)   ((val) & 0x7f & data->alarm_mask)

#define BEEP_MASK_FROM_REG(val) ((val) & 0x7f)

/* Each client has this additional data */

struct gl518_data {

        struct i2c_client client;

        struct device *hwmon_dev;

        enum chips type;

        struct mutex update_lock;

        char valid;             /* !=0 if following fields are valid */

        unsigned long last_updated;     /* In jiffies */

        u8 voltage_in[4];       /* Register values; [0] = VDD */

        u8 voltage_min[4];      /* Register values; [0] = VDD */

        u8 voltage_max[4];      /* Register values; [0] = VDD */

        u8 iter_voltage_in[4];  /* Register values; [0] = VDD */

        u8 fan_in[2];

        u8 fan_min[2];

        u8 fan_div[2];          /* Register encoding, shifted right */

        u8 fan_auto1;           /* Boolean */

        u8 temp_in;             /* Register values */

        u8 temp_max;            /* Register values */

        u8 temp_hyst;           /* Register values */

        u8 alarms;              /* Register value */

        u8 alarm_mask;          /* Register value */

        u8 beep_mask;           /* Register value */

        u8 beep_enable;         /* Boolean */

};

static int gl518_attach_adapter(struct i2c_adapter *adapter);

static int gl518_detect(struct i2c_adapter *adapter, int address, int kind);

static void gl518_init_client(struct i2c_client *client);

static int gl518_detach_client(struct i2c_client *client);

static int gl518_read_value(struct i2c_client *client, u8 reg);

static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value);

static struct gl518_data *gl518_update_device(struct device *dev);

/* This is the driver that will be inserted */

static struct i2c_driver gl518_driver = {

        .driver = {

                .name   = "gl518sm",

        },

        .id             = I2C_DRIVERID_GL518,

        .attach_adapter = gl518_attach_adapter,

        .detach_client  = gl518_detach_client,

};

/*

 * Sysfs stuff

 */

#define show(type, suffix, value)                                       \

static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf)              \

{                                                                       \

        struct gl518_data *data = gl518_update_device(dev);             \

        return sprintf(buf, "%d\n", type##_FROM_REG(data->value));      \

}

#define show_fan(suffix, value, index)                                  \

static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf)              \

{                                                                       \

        struct gl518_data *data = gl518_update_device(dev);             \

        return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[index],    \

                DIV_FROM_REG(data->fan_div[index])));                   \

}

show(TEMP, temp_input1, temp_in);

show(TEMP, temp_max1, temp_max);

show(TEMP, temp_hyst1, temp_hyst);

show(BOOL, fan_auto1, fan_auto1);

show_fan(fan_input1, fan_in, 0);

show_fan(fan_input2, fan_in, 1);

show_fan(fan_min1, fan_min, 0);

show_fan(fan_min2, fan_min, 1);

show(DIV, fan_div1, fan_div[0]);

show(DIV, fan_div2, fan_div[1]);

show(VDD, in_input0, voltage_in[0]);

show(IN, in_input1, voltage_in[1]);

show(IN, in_input2, voltage_in[2]);

show(IN, in_input3, voltage_in[3]);

show(VDD, in_min0, voltage_min[0]);

show(IN, in_min1, voltage_min[1]);

show(IN, in_min2, voltage_min[2]);

show(IN, in_min3, voltage_min[3]);

show(VDD, in_max0, voltage_max[0]);

show(IN, in_max1, voltage_max[1]);

show(IN, in_max2, voltage_max[2]);

show(IN, in_max3, voltage_max[3]);

show(RAW, alarms, alarms);

show(BOOL, beep_enable, beep_enable);

show(BEEP_MASK, beep_mask, beep_mask);

#define set(type, suffix, value, reg)                                   \

static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \

        size_t count)                                                   \

{                                                                       \

        struct i2c_client *client = to_i2c_client(dev);                 \

        struct gl518_data *data = i2c_get_clientdata(client);           \

        long val = simple_strtol(buf, NULL, 10);                        \

                                                                        \

        mutex_lock(&data->update_lock);                                 \

        data->value = type##_TO_REG(val);                               \

        gl518_write_value(client, reg, data->value);                    \

        mutex_unlock(&data->update_lock);                               \

        return count;                                                   \

}

#define set_bits(type, suffix, value, reg, mask, shift)                 \

static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \

        size_t count)                                                   \

{                                                                       \

        struct i2c_client *client = to_i2c_client(dev);                 \

        struct gl518_data *data = i2c_get_clientdata(client);           \

        int regvalue;                                                   \

        unsigned long val = simple_strtoul(buf, NULL, 10);              \

                                                                        \

        mutex_lock(&data->update_lock);                                 \

        regvalue = gl518_read_value(client, reg);                       \

        data->value = type##_TO_REG(val);                               \

        regvalue = (regvalue & ~mask) | (data->value << shift);         \

        gl518_write_value(client, reg, regvalue);                       \

        mutex_unlock(&data->update_lock);                               \

        return count;                                                   \

}

#define set_low(type, suffix, value, reg)                               \

        set_bits(type, suffix, value, reg, 0x00ff, 0)

#define set_high(type, suffix, value, reg)                              \

        set_bits(type, suffix, value, reg, 0xff00, 8)

set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX);

set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST);

set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3);

set_bits(DIV, fan_div1, fan_div[0], GL518_REG_MISC, 0xc0, 6);

set_bits(DIV, fan_div2, fan_div[1], GL518_REG_MISC, 0x30, 4);

set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT);

set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT);

set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT);

set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT);

set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT);

set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT);

set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT);

set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT);

set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2);

set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM);

static ssize_t set_fan_min1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)

{

        struct i2c_client *client = to_i2c_client(dev);

        struct gl518_data *data = i2c_get_clientdata(client);

        int regvalue;

        unsigned long val = simple_strtoul(buf, NULL, 10);

        mutex_lock(&data->update_lock);

        regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT);

        data->fan_min[0] = FAN_TO_REG(val,

                DIV_FROM_REG(data->fan_div[0]));

        regvalue = (regvalue & 0x00ff) | (data->fan_min[0] << 8);

        gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue);

        data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);

        if (data->fan_min[0] == 0)

                data->alarm_mask &= ~0x20;

        else

                data->alarm_mask |= 0x20;

        data->beep_mask &= data->alarm_mask;

        gl518_write_value(client, GL518_REG_ALARM, data->beep_mask);

        mutex_unlock(&data->update_lock);

        return count;

}

static ssize_t set_fan_min2(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)

{

        struct i2c_client *client = to_i2c_client(dev);

        struct gl518_data *data = i2c_get_clientdata(client);

        int regvalue;

        unsigned long val = simple_strtoul(buf, NULL, 10);

        mutex_lock(&data->update_lock);

        regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT);

        data->fan_min[1] = FAN_TO_REG(val,

                DIV_FROM_REG(data->fan_div[1]));

        regvalue = (regvalue & 0xff00) | data->fan_min[1];

        gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue);

        data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);

        if (data->fan_min[1] == 0)

                data->alarm_mask &= ~0x40;

        else

                data->alarm_mask |= 0x40;

        data->beep_mask &= data->alarm_mask;

        gl518_write_value(client, GL518_REG_ALARM, data->beep_mask);

        mutex_unlock(&data->update_lock);

        return count;

}

static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);

static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1);

static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO,

        show_temp_hyst1, set_temp_hyst1);

static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1);

static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input1, NULL);

static DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input2, NULL);

static DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, show_fan_min1, set_fan_min1);

static DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, show_fan_min2, set_fan_min2);

static DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, show_fan_div1, set_fan_div1);

static DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, show_fan_div2, set_fan_div2);

static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL);

static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL);

static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL);

static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL);

static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0);

static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1);

static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2);

static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3);

static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0);

static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1);

static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2);

static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3);

static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);

static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO,

        show_beep_enable, set_beep_enable);

static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO,

        show_beep_mask, set_beep_mask);

static struct attribute *gl518_attributes[] = {

        &dev_attr_in0_input.attr,

        &dev_attr_in1_input.attr,

        &dev_attr_in2_input.attr,

        &dev_attr_in3_input.attr,

        &dev_attr_in0_min.attr,

        &dev_attr_in1_min.attr,

        &dev_attr_in2_min.attr,

        &dev_attr_in3_min.attr,

        &dev_attr_in0_max.attr,

        &dev_attr_in1_max.attr,

        &dev_attr_in2_max.attr,

        &dev_attr_in3_max.attr,

        &dev_attr_fan1_auto.attr,

        &dev_attr_fan1_input.attr,

        &dev_attr_fan2_input.attr,

        &dev_attr_fan1_min.attr,

        &dev_attr_fan2_min.attr,

        &dev_attr_fan1_div.attr,

        &dev_attr_fan2_div.attr,

        &dev_attr_temp1_input.attr,

        &dev_attr_temp1_max.attr,

        &dev_attr_temp1_max_hyst.attr,

        &dev_attr_alarms.attr,

        &dev_attr_beep_enable.attr,

        &dev_attr_beep_mask.attr,

        NULL

};

static const struct attribute_group gl518_group = {

        .attrs = gl518_attributes,

};

/*

 * Real code

 */

static int gl518_attach_adapter(struct i2c_adapter *adapter)

{

        if (!(adapter->class & I2C_CLASS_HWMON))

                return 0;

        return i2c_probe(adapter, &addr_data, gl518_detect);

}

static int gl518_detect(struct i2c_adapter *adapter, int address, int kind)

{

        int i;

        struct i2c_client *new_client;

        struct gl518_data *data;

        int err = 0;

        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |

                                     I2C_FUNC_SMBUS_WORD_DATA))

                goto exit;

        /* 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 gl518_{read,write}_value. */

        if (!(data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL))) {

                err = -ENOMEM;

                goto exit;

        }

        new_client = &data->client;

        i2c_set_clientdata(new_client, data);

        new_client->addr = address;

        new_client->adapter = adapter;

        new_client->driver = &gl518_driver;

        new_client->flags = 0;

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

        if (kind < 0) {

                if ((gl518_read_value(new_client, GL518_REG_CHIP_ID) != 0x80)

                 || (gl518_read_value(new_client, GL518_REG_CONF) & 0x80))

                        goto exit_free;

        }

        /* Determine the chip type. */

        if (kind <= 0) {

                i = gl518_read_value(new_client, GL518_REG_REVISION);

                if (i == 0x00) {

                        kind = gl518sm_r00;

                } else if (i == 0x80) {

                        kind = gl518sm_r80;

                } else {

                        if (kind <= 0)

                                dev_info(&adapter->dev,

                                    "Ignoring 'force' parameter for unknown "

                                    "chip at adapter %d, address 0x%02x\n",

                                    i2c_adapter_id(adapter), address);

                        goto exit_free;

                }

        }

        /* Fill in the remaining client fields */

        strlcpy(new_client->name, "gl518sm", I2C_NAME_SIZE);

        data->type = kind;

        data->valid = 0;

        mutex_init(&data->update_lock);

        /* Tell the I2C layer a new client has arrived */

        if ((err = i2c_attach_client(new_client)))

                goto exit_free;

        /* Initialize the GL518SM chip */

        data->alarm_mask = 0xff;

        data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0;

        gl518_init_client((struct i2c_client *) new_client);

        /* Register sysfs hooks */

        if ((err = sysfs_create_group(&new_client->dev.kobj, &gl518_group)))

                goto exit_detach;

        data->hwmon_dev = hwmon_device_register(&new_client->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(&new_client->dev.kobj, &gl518_group);

exit_detach:

        i2c_detach_client(new_client);

exit_free:

        kfree(data);

exit:

        return err;

}

/* Called when we have found a new GL518SM.

   Note that we preserve D4:NoFan2 and D2:beep_enable. */

static void gl518_init_client(struct i2c_client *client)

{

        /* Make sure we leave D7:Reset untouched */

        u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f;

        /* Comparator mode (D3=0), standby mode (D6=0) */

        gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37));

        /* Never interrupts */

        gl518_write_value(client, GL518_REG_MASK, 0x00);

        /* Clear status register (D5=1), start (D6=1) */

        gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue);

        gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue);

}

static int gl518_detach_client(struct i2c_client *client)

{

        struct gl518_data *data = i2c_get_clientdata(client);

        int err;

        hwmon_device_unregister(data->hwmon_dev);

        sysfs_remove_group(&client->dev.kobj, &gl518_group);

        if ((err = i2c_detach_client(client)))

                return err;

        kfree(data);

        return 0;

}

/* Registers 0x07 to 0x0c are word-sized, others are byte-sized

   GL518 uses a high-byte first convention, which is exactly opposite to

   the usual practice. */

static int gl518_read_value(struct i2c_client *client, u8 reg)

{

        if ((reg >= 0x07) && (reg <= 0x0c))

                return swab16(i2c_smbus_read_word_data(client, reg));

        else

                return i2c_smbus_read_byte_data(client, reg);

}

/* Registers 0x07 to 0x0c are word-sized, others are byte-sized

   GL518 uses a high-byte first convention, which is exactly opposite to

   the usual practice. */

static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value)

{

        if ((reg >= 0x07) && (reg <= 0x0c))

                return i2c_smbus_write_word_data(client, reg, swab16(value));

        else

                return i2c_smbus_write_byte_data(client, reg, value);

}

static struct gl518_data *gl518_update_device(struct device *dev)

{

        struct i2c_client *client = to_i2c_client(dev);

        struct gl518_data *data = i2c_get_clientdata(client);

        int val;

        mutex_lock(&data->update_lock);

        if (time_after(jiffies, data->last_updated + HZ + HZ / 2)

            || !data->valid) {

                dev_dbg(&client->dev, "Starting gl518 update\n");

                data->alarms = gl518_read_value(client, GL518_REG_INT);

                data->beep_mask = gl518_read_value(client, GL518_REG_ALARM);

                val = gl518_read_value(client, GL518_REG_VDD_LIMIT);

                data->voltage_min[0] = val & 0xff;

                data->voltage_max[0] = (val >> 8) & 0xff;

                val = gl518_read_value(client, GL518_REG_VIN1_LIMIT);

                data->voltage_min[1] = val & 0xff;

                data->voltage_max[1] = (val >> 8) & 0xff;

                val = gl518_read_value(client, GL518_REG_VIN2_LIMIT);

                data->voltage_min[2] = val & 0xff;

                data->voltage_max[2] = (val >> 8) & 0xff;

                val = gl518_read_value(client, GL518_REG_VIN3_LIMIT);

                data->voltage_min[3] = val & 0xff;

                data->voltage_max[3] = (val >> 8) & 0xff;

                val = gl518_read_value(client, GL518_REG_FAN_COUNT);

                data->fan_in[0] = (val >> 8) & 0xff;

                data->fan_in[1] = val & 0xff;

                val = gl518_read_value(client, GL518_REG_FAN_LIMIT);

                data->fan_min[0] = (val >> 8) & 0xff;

                data->fan_min[1] = val & 0xff;

                data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN);

                data->temp_max =

                    gl518_read_value(client, GL518_REG_TEMP_MAX);

                data->temp_hyst =

                    gl518_read_value(client, GL518_REG_TEMP_HYST);

                val = gl518_read_value(client, GL518_REG_MISC);

                data->fan_div[0] = (val >> 6) & 0x03;

                data->fan_div[1] = (val >> 4) & 0x03;

                data->fan_auto1  = (val >> 3) & 0x01;

                data->alarms &= data->alarm_mask;

                val = gl518_read_value(client, GL518_REG_CONF);

                data->beep_enable = (val >> 2) & 1;

                if (data->type != gl518sm_r00) {

                        data->voltage_in[0] =

                            gl518_read_value(client, GL518_REG_VDD);

                        data->voltage_in[1] =

                            gl518_read_value(client, GL518_REG_VIN1);

                        data->voltage_in[2] =

                            gl518_read_value(client, GL518_REG_VIN2);

                }

                data->voltage_in[3] =

                    gl518_read_value(client, GL518_REG_VIN3);

                data->last_updated = jiffies;

                data->valid = 1;

        }

        mutex_unlock(&data->update_lock);

        return data;

}

static int __init sensors_gl518sm_init(void)

{

        return i2c_add_driver(&gl518_driver);

}

static void __exit sensors_gl518sm_exit(void)

{

        i2c_del_driver(&gl518_driver);

}

MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "

        "Kyosti Malkki <kmalkki@cc.hut.fi> and "

        "Hong-Gunn Chew <hglinux@gunnet.org>");

MODULE_DESCRIPTION("GL518SM driver");

MODULE_LICENSE("GPL");

module_init(sensors_gl518sm_init);

module_exit(sensors_gl518sm_exit);